From 5427bcf5e95245d3e220742ac703182bdb973769 Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Fri, 4 Feb 2011 20:45:49 -0500 Subject: hvc: add Blackfin JTAG console support This converts the existing bfin_jtag_comm TTY driver to the HVC layer so that the common HVC code can worry about all of the TTY/polling crap and leave the Blackfin code to worry about the Blackfin bits. Signed-off-by: Mike Frysinger Signed-off-by: Greg Kroah-Hartman --- drivers/char/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index b7980a83ce2d..17f9b968b988 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -691,6 +691,15 @@ config HVC_DCC driver. This console is used through a JTAG only on ARM. If you don't have a JTAG then you probably don't want this option. +config HVC_BFIN_JTAG + bool "Blackfin JTAG console" + depends on BLACKFIN + select HVC_DRIVER + help + This console uses the Blackfin JTAG to create a console under the + the HVC driver. If you don't have JTAG, then you probably don't + want this option. + config VIRTIO_CONSOLE tristate "Virtio console" depends on VIRTIO -- cgit v1.2.3 From 60b33c133ca0b7c0b6072c87234b63fee6e80558 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:26:14 +0000 Subject: tiocmget: kill off the passing of the struct file We don't actually need this and it causes problems for internal use of this functionality. Currently there is a single use of the FILE * pointer. That is the serial core which uses it to check tty_hung_up_p. However if that is true then IO_ERROR is also already set so the check may be removed. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/char/amiserial.c | 2 +- drivers/char/cyclades.c | 2 +- drivers/char/epca.c | 4 ++-- drivers/char/ip2/ip2main.c | 4 ++-- drivers/char/isicom.c | 2 +- drivers/char/istallion.c | 2 +- drivers/char/moxa.c | 4 ++-- drivers/char/mxser.c | 2 +- drivers/char/nozomi.c | 2 +- drivers/char/pcmcia/ipwireless/tty.c | 2 +- drivers/char/pcmcia/synclink_cs.c | 4 ++-- drivers/char/riscom8.c | 2 +- drivers/char/rocket.c | 2 +- drivers/char/serial167.c | 2 +- drivers/char/specialix.c | 2 +- drivers/char/stallion.c | 2 +- drivers/char/sx.c | 2 +- drivers/char/synclink.c | 4 ++-- drivers/char/synclink_gt.c | 4 ++-- drivers/char/synclinkmp.c | 4 ++-- drivers/isdn/gigaset/interface.c | 4 ++-- drivers/isdn/i4l/isdn_tty.c | 2 +- drivers/mmc/card/sdio_uart.c | 2 +- drivers/net/usb/hso.c | 2 +- drivers/net/wan/pc300_tty.c | 4 ++-- drivers/staging/quatech_usb2/quatech_usb2.c | 2 +- drivers/staging/serqt_usb2/serqt_usb2.c | 6 +++--- drivers/tty/hvc/hvsi.c | 2 +- drivers/tty/n_gsm.c | 2 +- drivers/tty/serial/68360serial.c | 2 +- drivers/tty/serial/crisv10.c | 2 +- drivers/tty/serial/ifx6x60.c | 2 +- drivers/tty/serial/serial_core.c | 6 ++---- drivers/tty/tty_io.c | 6 +++--- drivers/usb/class/cdc-acm.c | 2 +- drivers/usb/serial/ark3116.c | 2 +- drivers/usb/serial/belkin_sa.c | 4 ++-- drivers/usb/serial/ch341.c | 2 +- drivers/usb/serial/cp210x.c | 4 ++-- drivers/usb/serial/cypress_m8.c | 4 ++-- drivers/usb/serial/digi_acceleport.c | 4 ++-- drivers/usb/serial/ftdi_sio.c | 4 ++-- drivers/usb/serial/io_edgeport.c | 4 ++-- drivers/usb/serial/io_ti.c | 2 +- drivers/usb/serial/iuu_phoenix.c | 2 +- drivers/usb/serial/keyspan.c | 2 +- drivers/usb/serial/keyspan.h | 3 +-- drivers/usb/serial/keyspan_pda.c | 2 +- drivers/usb/serial/kl5kusb105.c | 4 ++-- drivers/usb/serial/kobil_sct.c | 4 ++-- drivers/usb/serial/mct_u232.c | 4 ++-- drivers/usb/serial/mos7720.c | 4 ++-- drivers/usb/serial/mos7840.c | 2 +- drivers/usb/serial/opticon.c | 2 +- drivers/usb/serial/oti6858.c | 4 ++-- drivers/usb/serial/pl2303.c | 2 +- drivers/usb/serial/sierra.c | 2 +- drivers/usb/serial/spcp8x5.c | 2 +- drivers/usb/serial/ssu100.c | 2 +- drivers/usb/serial/ti_usb_3410_5052.c | 4 ++-- drivers/usb/serial/usb-serial.c | 4 ++-- drivers/usb/serial/usb-wwan.h | 2 +- drivers/usb/serial/usb_wwan.c | 2 +- drivers/usb/serial/whiteheat.c | 4 ++-- include/linux/tty_driver.h | 2 +- include/linux/usb/serial.h | 2 +- include/net/irda/ircomm_tty.h | 2 +- net/bluetooth/rfcomm/tty.c | 2 +- net/irda/ircomm/ircomm_tty_ioctl.c | 4 ++-- 69 files changed, 98 insertions(+), 101 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index 6ee3348bc3e4..bc67e6839059 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -1194,7 +1194,7 @@ static int get_lsr_info(struct async_struct * info, unsigned int __user *value) } -static int rs_tiocmget(struct tty_struct *tty, struct file *file) +static int rs_tiocmget(struct tty_struct *tty) { struct async_struct * info = tty->driver_data; unsigned char control, status; diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 4f152c28f40e..e7945ddacd18 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -2429,7 +2429,7 @@ static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) return put_user(result, (unsigned long __user *)value); } -static int cy_tiocmget(struct tty_struct *tty, struct file *file) +static int cy_tiocmget(struct tty_struct *tty) { struct cyclades_port *info = tty->driver_data; struct cyclades_card *card; diff --git a/drivers/char/epca.c b/drivers/char/epca.c index d9df46aa0fba..ecf6f0a889fc 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -1982,7 +1982,7 @@ static int info_ioctl(struct tty_struct *tty, struct file *file, return 0; } -static int pc_tiocmget(struct tty_struct *tty, struct file *file) +static int pc_tiocmget(struct tty_struct *tty) { struct channel *ch = tty->driver_data; struct board_chan __iomem *bc; @@ -2074,7 +2074,7 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file, return -EINVAL; switch (cmd) { case TIOCMODG: - mflag = pc_tiocmget(tty, file); + mflag = pc_tiocmget(tty); if (put_user(mflag, (unsigned long __user *)argp)) return -EFAULT; break; diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c index c3a025356b8b..476cd087118e 100644 --- a/drivers/char/ip2/ip2main.c +++ b/drivers/char/ip2/ip2main.c @@ -181,7 +181,7 @@ static void ip2_unthrottle(PTTY); static void ip2_stop(PTTY); static void ip2_start(PTTY); static void ip2_hangup(PTTY); -static int ip2_tiocmget(struct tty_struct *tty, struct file *file); +static int ip2_tiocmget(struct tty_struct *tty); static int ip2_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int ip2_get_icount(struct tty_struct *tty, @@ -2038,7 +2038,7 @@ ip2_stop ( PTTY tty ) /* Device Ioctl Section */ /******************************************************************************/ -static int ip2_tiocmget(struct tty_struct *tty, struct file *file) +static int ip2_tiocmget(struct tty_struct *tty) { i2ChanStrPtr pCh = DevTable[tty->index]; #ifdef ENABLE_DSSNOW diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index c27e9d21fea9..836370bc04c2 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -1065,7 +1065,7 @@ static int isicom_send_break(struct tty_struct *tty, int length) return 0; } -static int isicom_tiocmget(struct tty_struct *tty, struct file *file) +static int isicom_tiocmget(struct tty_struct *tty) { struct isi_port *port = tty->driver_data; /* just send the port status */ diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c index 7c6de4c92458..7843a847b76a 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -1501,7 +1501,7 @@ static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *s /*****************************************************************************/ -static int stli_tiocmget(struct tty_struct *tty, struct file *file) +static int stli_tiocmget(struct tty_struct *tty) { struct stliport *portp = tty->driver_data; struct stlibrd *brdp; diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index 107b0bd58d19..fdf069bb702f 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -199,7 +199,7 @@ static void moxa_set_termios(struct tty_struct *, struct ktermios *); static void moxa_stop(struct tty_struct *); static void moxa_start(struct tty_struct *); static void moxa_hangup(struct tty_struct *); -static int moxa_tiocmget(struct tty_struct *tty, struct file *file); +static int moxa_tiocmget(struct tty_struct *tty); static int moxa_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static void moxa_poll(unsigned long); @@ -1257,7 +1257,7 @@ static int moxa_chars_in_buffer(struct tty_struct *tty) return chars; } -static int moxa_tiocmget(struct tty_struct *tty, struct file *file) +static int moxa_tiocmget(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; int flag = 0, dtr, rts; diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index dd9d75351cd6..4d2f03ec06cd 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -1320,7 +1320,7 @@ static int mxser_get_lsr_info(struct mxser_port *info, return put_user(result, value); } -static int mxser_tiocmget(struct tty_struct *tty, struct file *file) +static int mxser_tiocmget(struct tty_struct *tty) { struct mxser_port *info = tty->driver_data; unsigned char control, status; diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index 294d03e8c61a..0e1dff2ffb1e 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -1750,7 +1750,7 @@ static int ntty_write_room(struct tty_struct *tty) } /* Gets io control parameters */ -static int ntty_tiocmget(struct tty_struct *tty, struct file *file) +static int ntty_tiocmget(struct tty_struct *tty) { const struct port *port = tty->driver_data; const struct ctrl_dl *ctrl_dl = &port->ctrl_dl; diff --git a/drivers/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c index f5eb28b6cb0f..7d2ef4909a73 100644 --- a/drivers/char/pcmcia/ipwireless/tty.c +++ b/drivers/char/pcmcia/ipwireless/tty.c @@ -395,7 +395,7 @@ static int set_control_lines(struct ipw_tty *tty, unsigned int set, return 0; } -static int ipw_tiocmget(struct tty_struct *linux_tty, struct file *file) +static int ipw_tiocmget(struct tty_struct *linux_tty) { struct ipw_tty *tty = linux_tty->driver_data; /* FIXME: Exactly how is the tty object locked here .. */ diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index eaa41992fbe2..7b68ba6609fe 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -418,7 +418,7 @@ static void bh_status(MGSLPC_INFO *info); /* * ioctl handlers */ -static int tiocmget(struct tty_struct *tty, struct file *file); +static int tiocmget(struct tty_struct *tty); static int tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount); @@ -2114,7 +2114,7 @@ static int modem_input_wait(MGSLPC_INFO *info,int arg) /* return the state of the serial control and status signals */ -static int tiocmget(struct tty_struct *tty, struct file *file) +static int tiocmget(struct tty_struct *tty) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; unsigned int result; diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index af4de1fe8445..5d0c98456c93 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -1086,7 +1086,7 @@ static int rc_chars_in_buffer(struct tty_struct *tty) return port->xmit_cnt; } -static int rc_tiocmget(struct tty_struct *tty, struct file *file) +static int rc_tiocmget(struct tty_struct *tty) { struct riscom_port *port = tty->driver_data; struct riscom_board *bp; diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c index 3e4e73a0d7c1..75e98efbc8e9 100644 --- a/drivers/char/rocket.c +++ b/drivers/char/rocket.c @@ -1169,7 +1169,7 @@ static int sGetChanRI(CHANNEL_T * ChP) * Returns the state of the serial modem control lines. These next 2 functions * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs. */ -static int rp_tiocmget(struct tty_struct *tty, struct file *file) +static int rp_tiocmget(struct tty_struct *tty) { struct r_port *info = tty->driver_data; unsigned int control, result, ChanStatus; diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c index 748c3b0ecd89..fda90643ead7 100644 --- a/drivers/char/serial167.c +++ b/drivers/char/serial167.c @@ -1308,7 +1308,7 @@ check_and_exit: return startup(info); } /* set_serial_info */ -static int cy_tiocmget(struct tty_struct *tty, struct file *file) +static int cy_tiocmget(struct tty_struct *tty) { struct cyclades_port *info = tty->driver_data; int channel; diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c index c2bca3f25ef3..bfecfbef0895 100644 --- a/drivers/char/specialix.c +++ b/drivers/char/specialix.c @@ -1737,7 +1737,7 @@ static int sx_chars_in_buffer(struct tty_struct *tty) return port->xmit_cnt; } -static int sx_tiocmget(struct tty_struct *tty, struct file *file) +static int sx_tiocmget(struct tty_struct *tty) { struct specialix_port *port = tty->driver_data; struct specialix_board *bp; diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c index 461a5a045517..8c2bf3fb5b89 100644 --- a/drivers/char/stallion.c +++ b/drivers/char/stallion.c @@ -1094,7 +1094,7 @@ static int stl_setserial(struct tty_struct *tty, struct serial_struct __user *sp /*****************************************************************************/ -static int stl_tiocmget(struct tty_struct *tty, struct file *file) +static int stl_tiocmget(struct tty_struct *tty) { struct stlport *portp; diff --git a/drivers/char/sx.c b/drivers/char/sx.c index a786326cea2f..f46214e60d0c 100644 --- a/drivers/char/sx.c +++ b/drivers/char/sx.c @@ -1873,7 +1873,7 @@ static int sx_break(struct tty_struct *tty, int flag) return 0; } -static int sx_tiocmget(struct tty_struct *tty, struct file *file) +static int sx_tiocmget(struct tty_struct *tty) { struct sx_port *port = tty->driver_data; return sx_getsignals(port); diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index 3a6824f12be2..d359e092904a 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -823,7 +823,7 @@ static isr_dispatch_func UscIsrTable[7] = /* * ioctl call handlers */ -static int tiocmget(struct tty_struct *tty, struct file *file); +static int tiocmget(struct tty_struct *tty); static int tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount @@ -2846,7 +2846,7 @@ static int modem_input_wait(struct mgsl_struct *info,int arg) /* return the state of the serial control and status signals */ -static int tiocmget(struct tty_struct *tty, struct file *file) +static int tiocmget(struct tty_struct *tty) { struct mgsl_struct *info = tty->driver_data; unsigned int result; diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c index d01fffeac951..f18ab8af0e1c 100644 --- a/drivers/char/synclink_gt.c +++ b/drivers/char/synclink_gt.c @@ -512,7 +512,7 @@ static int tx_abort(struct slgt_info *info); static int rx_enable(struct slgt_info *info, int enable); static int modem_input_wait(struct slgt_info *info,int arg); static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr); -static int tiocmget(struct tty_struct *tty, struct file *file); +static int tiocmget(struct tty_struct *tty); static int tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int set_break(struct tty_struct *tty, int break_state); @@ -3195,7 +3195,7 @@ static int modem_input_wait(struct slgt_info *info,int arg) /* * return state of serial control and status signals */ -static int tiocmget(struct tty_struct *tty, struct file *file) +static int tiocmget(struct tty_struct *tty) { struct slgt_info *info = tty->driver_data; unsigned int result; diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c index 2f9eb4b0dec1..5900213ae75b 100644 --- a/drivers/char/synclinkmp.c +++ b/drivers/char/synclinkmp.c @@ -546,7 +546,7 @@ static int tx_abort(SLMP_INFO *info); static int rx_enable(SLMP_INFO *info, int enable); static int modem_input_wait(SLMP_INFO *info,int arg); static int wait_mgsl_event(SLMP_INFO *info, int __user *mask_ptr); -static int tiocmget(struct tty_struct *tty, struct file *file); +static int tiocmget(struct tty_struct *tty); static int tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int set_break(struct tty_struct *tty, int break_state); @@ -3207,7 +3207,7 @@ static int modem_input_wait(SLMP_INFO *info,int arg) /* return the state of the serial control and status signals */ -static int tiocmget(struct tty_struct *tty, struct file *file) +static int tiocmget(struct tty_struct *tty) { SLMP_INFO *info = tty->driver_data; unsigned int result; diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index bb710d16a526..e1a7c14f5f1d 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -122,7 +122,7 @@ static int if_chars_in_buffer(struct tty_struct *tty); static void if_throttle(struct tty_struct *tty); static void if_unthrottle(struct tty_struct *tty); static void if_set_termios(struct tty_struct *tty, struct ktermios *old); -static int if_tiocmget(struct tty_struct *tty, struct file *file); +static int if_tiocmget(struct tty_struct *tty); static int if_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int if_write(struct tty_struct *tty, @@ -280,7 +280,7 @@ static int if_ioctl(struct tty_struct *tty, struct file *file, return retval; } -static int if_tiocmget(struct tty_struct *tty, struct file *file) +static int if_tiocmget(struct tty_struct *tty) { struct cardstate *cs; int retval; diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c index c463162843ba..ba6c2f124b58 100644 --- a/drivers/isdn/i4l/isdn_tty.c +++ b/drivers/isdn/i4l/isdn_tty.c @@ -1345,7 +1345,7 @@ isdn_tty_get_lsr_info(modem_info * info, uint __user * value) static int -isdn_tty_tiocmget(struct tty_struct *tty, struct file *file) +isdn_tty_tiocmget(struct tty_struct *tty) { modem_info *info = (modem_info *) tty->driver_data; u_char control, status; diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index a0716967b7c8..86bb04d821b1 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -956,7 +956,7 @@ static int sdio_uart_break_ctl(struct tty_struct *tty, int break_state) return 0; } -static int sdio_uart_tiocmget(struct tty_struct *tty, struct file *file) +static int sdio_uart_tiocmget(struct tty_struct *tty) { struct sdio_uart_port *port = tty->driver_data; int result; diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index bed8fcedff49..7c68c456c035 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -1656,7 +1656,7 @@ static int hso_get_count(struct tty_struct *tty, } -static int hso_serial_tiocmget(struct tty_struct *tty, struct file *file) +static int hso_serial_tiocmget(struct tty_struct *tty) { int retval; struct hso_serial *serial = get_serial_by_tty(tty); diff --git a/drivers/net/wan/pc300_tty.c b/drivers/net/wan/pc300_tty.c index 515d9b8af01e..d999e54a7730 100644 --- a/drivers/net/wan/pc300_tty.c +++ b/drivers/net/wan/pc300_tty.c @@ -133,7 +133,7 @@ static void cpc_tty_signal_on(pc300dev_t *pc300dev, unsigned char); static int pc300_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int); -static int pc300_tiocmget(struct tty_struct *, struct file *); +static int pc300_tiocmget(struct tty_struct *); /* functions called by PC300 driver */ void cpc_tty_init(pc300dev_t *dev); @@ -570,7 +570,7 @@ static int pc300_tiocmset(struct tty_struct *tty, struct file *file, return 0; } -static int pc300_tiocmget(struct tty_struct *tty, struct file *file) +static int pc300_tiocmget(struct tty_struct *tty) { unsigned int result; unsigned char status; diff --git a/drivers/staging/quatech_usb2/quatech_usb2.c b/drivers/staging/quatech_usb2/quatech_usb2.c index ed58f482c963..1e50292aef74 100644 --- a/drivers/staging/quatech_usb2/quatech_usb2.c +++ b/drivers/staging/quatech_usb2/quatech_usb2.c @@ -1078,7 +1078,7 @@ static void qt2_set_termios(struct tty_struct *tty, } } -static int qt2_tiocmget(struct tty_struct *tty, struct file *file) +static int qt2_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; diff --git a/drivers/staging/serqt_usb2/serqt_usb2.c b/drivers/staging/serqt_usb2/serqt_usb2.c index 27841ef6a568..56ded56db7b4 100644 --- a/drivers/staging/serqt_usb2/serqt_usb2.c +++ b/drivers/staging/serqt_usb2/serqt_usb2.c @@ -1383,7 +1383,7 @@ static void qt_break(struct tty_struct *tty, int break_state) static inline int qt_real_tiocmget(struct tty_struct *tty, struct usb_serial_port *port, - struct file *file, struct usb_serial *serial) + struct usb_serial *serial) { u8 mcr; @@ -1462,7 +1462,7 @@ static inline int qt_real_tiocmset(struct tty_struct *tty, return 0; } -static int qt_tiocmget(struct tty_struct *tty, struct file *file) +static int qt_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = get_usb_serial(port, __func__); @@ -1480,7 +1480,7 @@ static int qt_tiocmget(struct tty_struct *tty, struct file *file) dbg("%s - port %d\n", __func__, port->number); dbg("%s - port->RxHolding = %d\n", __func__, qt_port->RxHolding); - retval = qt_real_tiocmget(tty, port, file, serial); + retval = qt_real_tiocmget(tty, port, serial); spin_unlock_irqrestore(&qt_port->lock, flags); return retval; diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c index 67a75a502c01..55293105a56c 100644 --- a/drivers/tty/hvc/hvsi.c +++ b/drivers/tty/hvc/hvsi.c @@ -1095,7 +1095,7 @@ static void hvsi_unthrottle(struct tty_struct *tty) h_vio_signal(hp->vtermno, VIO_IRQ_ENABLE); } -static int hvsi_tiocmget(struct tty_struct *tty, struct file *file) +static int hvsi_tiocmget(struct tty_struct *tty) { struct hvsi_struct *hp = tty->driver_data; diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 44b8412a04e8..97e3d509ff82 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2648,7 +2648,7 @@ static void gsmtty_wait_until_sent(struct tty_struct *tty, int timeout) to do here */ } -static int gsmtty_tiocmget(struct tty_struct *tty, struct file *filp) +static int gsmtty_tiocmget(struct tty_struct *tty) { struct gsm_dlci *dlci = tty->driver_data; return dlci->modem_rx; diff --git a/drivers/tty/serial/68360serial.c b/drivers/tty/serial/68360serial.c index 88b13356ec10..2a52cf14ce50 100644 --- a/drivers/tty/serial/68360serial.c +++ b/drivers/tty/serial/68360serial.c @@ -1240,7 +1240,7 @@ static int get_lsr_info(struct async_struct * info, unsigned int *value) } #endif -static int rs_360_tiocmget(struct tty_struct *tty, struct file *file) +static int rs_360_tiocmget(struct tty_struct *tty) { ser_info_t *info = (ser_info_t *)tty->driver_data; unsigned int result = 0; diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c index bcc31f2140ac..8cc5c0224b25 100644 --- a/drivers/tty/serial/crisv10.c +++ b/drivers/tty/serial/crisv10.c @@ -3614,7 +3614,7 @@ rs_tiocmset(struct tty_struct *tty, struct file *file, } static int -rs_tiocmget(struct tty_struct *tty, struct file *file) +rs_tiocmget(struct tty_struct *tty) { struct e100_serial *info = (struct e100_serial *)tty->driver_data; unsigned int result; diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index b68b96f53e6c..4d26d39ec344 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -245,7 +245,7 @@ static void ifx_spi_timeout(unsigned long arg) * Map the signal state into Linux modem flags and report the value * in Linux terms */ -static int ifx_spi_tiocmget(struct tty_struct *tty, struct file *filp) +static int ifx_spi_tiocmget(struct tty_struct *tty) { unsigned int value; struct ifx_spi_device *ifx_dev = tty->driver_data; diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 20563c509b21..53e490e47560 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -905,7 +905,7 @@ static int uart_get_lsr_info(struct tty_struct *tty, return put_user(result, value); } -static int uart_tiocmget(struct tty_struct *tty, struct file *file) +static int uart_tiocmget(struct tty_struct *tty) { struct uart_state *state = tty->driver_data; struct tty_port *port = &state->port; @@ -913,10 +913,8 @@ static int uart_tiocmget(struct tty_struct *tty, struct file *file) int result = -EIO; mutex_lock(&port->mutex); - if ((!file || !tty_hung_up_p(file)) && - !(tty->flags & (1 << TTY_IO_ERROR))) { + if (!(tty->flags & (1 << TTY_IO_ERROR))) { result = uport->mctrl; - spin_lock_irq(&uport->lock); result |= uport->ops->get_mctrl(uport); spin_unlock_irq(&uport->lock); diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 0065da4b11c1..fde5a4dae3dd 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -2465,12 +2465,12 @@ out: * Locking: none (up to the driver) */ -static int tty_tiocmget(struct tty_struct *tty, struct file *file, int __user *p) +static int tty_tiocmget(struct tty_struct *tty, int __user *p) { int retval = -EINVAL; if (tty->ops->tiocmget) { - retval = tty->ops->tiocmget(tty, file); + retval = tty->ops->tiocmget(tty); if (retval >= 0) retval = put_user(retval, p); @@ -2655,7 +2655,7 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return send_break(tty, arg ? arg*100 : 250); case TIOCMGET: - return tty_tiocmget(tty, file, p); + return tty_tiocmget(tty, p); case TIOCMSET: case TIOCMBIC: case TIOCMBIS: diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index d6ede989ff22..2ae996b7ce7b 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -776,7 +776,7 @@ static int acm_tty_break_ctl(struct tty_struct *tty, int state) return retval; } -static int acm_tty_tiocmget(struct tty_struct *tty, struct file *file) +static int acm_tty_tiocmget(struct tty_struct *tty) { struct acm *acm = tty->driver_data; diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 8f1d4fb19d24..35b610aa3f92 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -485,7 +485,7 @@ static int ark3116_ioctl(struct tty_struct *tty, struct file *file, return -ENOIOCTLCMD; } -static int ark3116_tiocmget(struct tty_struct *tty, struct file *file) +static int ark3116_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct ark3116_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index 36df35295db2..48fb3bad3cd6 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -100,7 +100,7 @@ static void belkin_sa_process_read_urb(struct urb *urb); static void belkin_sa_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios * old); static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state); -static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file); +static int belkin_sa_tiocmget(struct tty_struct *tty); static int belkin_sa_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); @@ -497,7 +497,7 @@ static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state) dev_err(&port->dev, "Set break_ctl %d\n", break_state); } -static int belkin_sa_tiocmget(struct tty_struct *tty, struct file *file) +static int belkin_sa_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct belkin_sa_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 7b8815ddf368..aa0962b72f4c 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -572,7 +572,7 @@ static int ch341_ioctl(struct tty_struct *tty, struct file *file, return -ENOIOCTLCMD; } -static int ch341_tiocmget(struct tty_struct *tty, struct file *file) +static int ch341_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct ch341_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 735ea03157ab..b3873815035c 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -41,7 +41,7 @@ static void cp210x_get_termios_port(struct usb_serial_port *port, unsigned int *cflagp, unsigned int *baudp); static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, struct ktermios*); -static int cp210x_tiocmget(struct tty_struct *, struct file *); +static int cp210x_tiocmget(struct tty_struct *); static int cp210x_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int); static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, @@ -742,7 +742,7 @@ static void cp210x_dtr_rts(struct usb_serial_port *p, int on) cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS); } -static int cp210x_tiocmget (struct tty_struct *tty, struct file *file) +static int cp210x_tiocmget (struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; unsigned int control; diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 2edf238b00b9..9c96cff691fd 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -173,7 +173,7 @@ static int cypress_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static void cypress_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -static int cypress_tiocmget(struct tty_struct *tty, struct file *file); +static int cypress_tiocmget(struct tty_struct *tty); static int cypress_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int cypress_chars_in_buffer(struct tty_struct *tty); @@ -864,7 +864,7 @@ static int cypress_write_room(struct tty_struct *tty) } -static int cypress_tiocmget(struct tty_struct *tty, struct file *file) +static int cypress_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct cypress_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 666e5a6edd82..08da46cb5825 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -445,7 +445,7 @@ static void digi_rx_unthrottle(struct tty_struct *tty); static void digi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); static void digi_break_ctl(struct tty_struct *tty, int break_state); -static int digi_tiocmget(struct tty_struct *tty, struct file *file); +static int digi_tiocmget(struct tty_struct *tty); static int digi_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int digi_write(struct tty_struct *tty, struct usb_serial_port *port, @@ -1118,7 +1118,7 @@ static void digi_break_ctl(struct tty_struct *tty, int break_state) } -static int digi_tiocmget(struct tty_struct *tty, struct file *file) +static int digi_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct digi_port *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 4787c0cd063f..281d18141051 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -856,7 +856,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, void *dest, size_t size); static void ftdi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -static int ftdi_tiocmget(struct tty_struct *tty, struct file *file); +static int ftdi_tiocmget(struct tty_struct *tty); static int ftdi_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int ftdi_ioctl(struct tty_struct *tty, struct file *file, @@ -2149,7 +2149,7 @@ static void ftdi_set_termios(struct tty_struct *tty, } } -static int ftdi_tiocmget(struct tty_struct *tty, struct file *file) +static int ftdi_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct ftdi_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index cd769ef24f8a..e8fe4dcf72f0 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -219,7 +219,7 @@ static void edge_set_termios(struct tty_struct *tty, static int edge_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static void edge_break(struct tty_struct *tty, int break_state); -static int edge_tiocmget(struct tty_struct *tty, struct file *file); +static int edge_tiocmget(struct tty_struct *tty); static int edge_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int edge_get_icount(struct tty_struct *tty, @@ -1599,7 +1599,7 @@ static int edge_tiocmset(struct tty_struct *tty, struct file *file, return 0; } -static int edge_tiocmget(struct tty_struct *tty, struct file *file) +static int edge_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 22506b095c4f..7cb9f5cb91f3 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2477,7 +2477,7 @@ static int edge_tiocmset(struct tty_struct *tty, struct file *file, return 0; } -static int edge_tiocmget(struct tty_struct *tty, struct file *file) +static int edge_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 99b97c04896f..1d96142f135a 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -179,7 +179,7 @@ static int iuu_tiocmset(struct tty_struct *tty, struct file *file, * When no card , the reader respond with TIOCM_CD * This is known as CD autodetect mechanism */ -static int iuu_tiocmget(struct tty_struct *tty, struct file *file) +static int iuu_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct iuu_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 0791778a66f3..1beebbb7a20a 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -301,7 +301,7 @@ static void keyspan_set_termios(struct tty_struct *tty, keyspan_send_setup(port, 0); } -static int keyspan_tiocmget(struct tty_struct *tty, struct file *file) +static int keyspan_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct keyspan_port_private *p_priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/keyspan.h b/drivers/usb/serial/keyspan.h index ce134dc28ddf..5e5fc71e68df 100644 --- a/drivers/usb/serial/keyspan.h +++ b/drivers/usb/serial/keyspan.h @@ -58,8 +58,7 @@ static void keyspan_set_termios (struct tty_struct *tty, struct ktermios *old); static void keyspan_break_ctl (struct tty_struct *tty, int break_state); -static int keyspan_tiocmget (struct tty_struct *tty, - struct file *file); +static int keyspan_tiocmget (struct tty_struct *tty); static int keyspan_tiocmset (struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index 554a8693a463..49ad2baf77cd 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -457,7 +457,7 @@ static int keyspan_pda_set_modem_info(struct usb_serial *serial, return rc; } -static int keyspan_pda_tiocmget(struct tty_struct *tty, struct file *file) +static int keyspan_pda_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct usb_serial *serial = port->serial; diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index e8a65ce45a2f..a570f5201c73 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -68,7 +68,7 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port); static void klsi_105_close(struct usb_serial_port *port); static void klsi_105_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file); +static int klsi_105_tiocmget(struct tty_struct *tty); static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static void klsi_105_process_read_urb(struct urb *urb); @@ -637,7 +637,7 @@ static void mct_u232_break_ctl(struct tty_struct *tty, int break_state) } #endif -static int klsi_105_tiocmget(struct tty_struct *tty, struct file *file) +static int klsi_105_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct klsi_105_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index bd5bd8589e04..81d07fb299b8 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -77,7 +77,7 @@ static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, static int kobil_write_room(struct tty_struct *tty); static int kobil_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); -static int kobil_tiocmget(struct tty_struct *tty, struct file *file); +static int kobil_tiocmget(struct tty_struct *tty); static int kobil_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static void kobil_read_int_callback(struct urb *urb); @@ -504,7 +504,7 @@ static int kobil_write_room(struct tty_struct *tty) } -static int kobil_tiocmget(struct tty_struct *tty, struct file *file) +static int kobil_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct kobil_private *priv; diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index 2849f8c32015..27447095feae 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -101,7 +101,7 @@ static void mct_u232_read_int_callback(struct urb *urb); static void mct_u232_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static void mct_u232_break_ctl(struct tty_struct *tty, int break_state); -static int mct_u232_tiocmget(struct tty_struct *tty, struct file *file); +static int mct_u232_tiocmget(struct tty_struct *tty); static int mct_u232_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static void mct_u232_throttle(struct tty_struct *tty); @@ -762,7 +762,7 @@ static void mct_u232_break_ctl(struct tty_struct *tty, int break_state) } /* mct_u232_break_ctl */ -static int mct_u232_tiocmget(struct tty_struct *tty, struct file *file) +static int mct_u232_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct mct_u232_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 7d3bc9a3e2b6..5d40d4151b5a 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1833,7 +1833,7 @@ static int get_lsr_info(struct tty_struct *tty, return 0; } -static int mos7720_tiocmget(struct tty_struct *tty, struct file *file) +static int mos7720_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7720_port = usb_get_serial_port_data(port); @@ -1865,7 +1865,7 @@ static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, struct moschip_port *mos7720_port = usb_get_serial_port_data(port); unsigned int mcr ; dbg("%s - port %d", __func__, port->number); - dbg("he was at tiocmget"); + dbg("he was at tiocmset"); mcr = mos7720_port->shadowMCR; diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 5627993f9e41..ee0dc9a0890c 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1644,7 +1644,7 @@ static void mos7840_unthrottle(struct tty_struct *tty) } } -static int mos7840_tiocmget(struct tty_struct *tty, struct file *file) +static int mos7840_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7840_port; diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index eda1f9266c4e..e305df807396 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -352,7 +352,7 @@ static void opticon_unthrottle(struct tty_struct *tty) } } -static int opticon_tiocmget(struct tty_struct *tty, struct file *file) +static int opticon_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct opticon_private *priv = usb_get_serial_data(port->serial); diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index 73613205be7a..4cd3b0ef4e61 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -144,7 +144,7 @@ static int oti6858_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int oti6858_write_room(struct tty_struct *tty); static int oti6858_chars_in_buffer(struct tty_struct *tty); -static int oti6858_tiocmget(struct tty_struct *tty, struct file *file); +static int oti6858_tiocmget(struct tty_struct *tty); static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int oti6858_startup(struct usb_serial *serial); @@ -657,7 +657,7 @@ static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, return 0; } -static int oti6858_tiocmget(struct tty_struct *tty, struct file *file) +static int oti6858_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct oti6858_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 08c9181b8e48..6cb4f503a3f1 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -531,7 +531,7 @@ static int pl2303_tiocmset(struct tty_struct *tty, struct file *file, return set_control_lines(port->serial->dev, control); } -static int pl2303_tiocmget(struct tty_struct *tty, struct file *file) +static int pl2303_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct pl2303_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 7481ff8a49e4..66437f1e9e5b 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -389,7 +389,7 @@ static void sierra_set_termios(struct tty_struct *tty, sierra_send_setup(port); } -static int sierra_tiocmget(struct tty_struct *tty, struct file *file) +static int sierra_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; unsigned int value; diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index cbfb70bffdd0..cac13009fc5c 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -618,7 +618,7 @@ static int spcp8x5_tiocmset(struct tty_struct *tty, struct file *file, return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); } -static int spcp8x5_tiocmget(struct tty_struct *tty, struct file *file) +static int spcp8x5_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct spcp8x5_private *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index 8359ec798959..b21583fa825c 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -484,7 +484,7 @@ static int ssu100_attach(struct usb_serial *serial) return ssu100_initdevice(serial->dev); } -static int ssu100_tiocmget(struct tty_struct *tty, struct file *file) +static int ssu100_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct usb_device *dev = port->serial->dev; diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index b2902f307b47..223e60e31735 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -112,7 +112,7 @@ static int ti_get_icount(struct tty_struct *tty, struct serial_icounter_struct *icount); static void ti_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); -static int ti_tiocmget(struct tty_struct *tty, struct file *file); +static int ti_tiocmget(struct tty_struct *tty); static int ti_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static void ti_break(struct tty_struct *tty, int break_state); @@ -1000,7 +1000,7 @@ static void ti_set_termios(struct tty_struct *tty, } -static int ti_tiocmget(struct tty_struct *tty, struct file *file) +static int ti_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct ti_port *tport = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 546a52179bec..df105c6531a1 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -496,14 +496,14 @@ static const struct file_operations serial_proc_fops = { .release = single_release, }; -static int serial_tiocmget(struct tty_struct *tty, struct file *file) +static int serial_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; dbg("%s - port %d", __func__, port->number); if (port->serial->type->tiocmget) - return port->serial->type->tiocmget(tty, file); + return port->serial->type->tiocmget(tty); return -EINVAL; } diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h index 3ab77c5d9819..8b68fc783d5f 100644 --- a/drivers/usb/serial/usb-wwan.h +++ b/drivers/usb/serial/usb-wwan.h @@ -15,7 +15,7 @@ extern int usb_wwan_write_room(struct tty_struct *tty); extern void usb_wwan_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -extern int usb_wwan_tiocmget(struct tty_struct *tty, struct file *file); +extern int usb_wwan_tiocmget(struct tty_struct *tty); extern int usb_wwan_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); extern int usb_wwan_ioctl(struct tty_struct *tty, struct file *file, diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index b004b2a485c3..60f942632cb4 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -79,7 +79,7 @@ void usb_wwan_set_termios(struct tty_struct *tty, } EXPORT_SYMBOL(usb_wwan_set_termios); -int usb_wwan_tiocmget(struct tty_struct *tty, struct file *file) +int usb_wwan_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; unsigned int value; diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index 3f9ac88d588c..bf850139e0b8 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -156,7 +156,7 @@ static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static void whiteheat_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file); +static int whiteheat_tiocmget(struct tty_struct *tty); static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); @@ -833,7 +833,7 @@ static int whiteheat_write_room(struct tty_struct *tty) return (room); } -static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file) +static int whiteheat_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct whiteheat_private *info = usb_get_serial_port_data(port); diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index c3d43eb4150c..9539d74171db 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -271,7 +271,7 @@ struct tty_operations { void (*set_ldisc)(struct tty_struct *tty); void (*wait_until_sent)(struct tty_struct *tty, int timeout); void (*send_xchar)(struct tty_struct *tty, char ch); - int (*tiocmget)(struct tty_struct *tty, struct file *file); + int (*tiocmget)(struct tty_struct *tty); int (*tiocmset)(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); int (*resize)(struct tty_struct *tty, struct winsize *ws); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index c9049139a7a5..30b945397d19 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -268,7 +268,7 @@ struct usb_serial_driver { int (*chars_in_buffer)(struct tty_struct *tty); void (*throttle)(struct tty_struct *tty); void (*unthrottle)(struct tty_struct *tty); - int (*tiocmget)(struct tty_struct *tty, struct file *file); + int (*tiocmget)(struct tty_struct *tty); int (*tiocmset)(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); int (*get_icount)(struct tty_struct *tty, diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h index eea2e6152389..fa3793b5392d 100644 --- a/include/net/irda/ircomm_tty.h +++ b/include/net/irda/ircomm_tty.h @@ -120,7 +120,7 @@ struct ircomm_tty_cb { void ircomm_tty_start(struct tty_struct *tty); void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self); -extern int ircomm_tty_tiocmget(struct tty_struct *tty, struct file *file); +extern int ircomm_tty_tiocmget(struct tty_struct *tty); extern int ircomm_tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); extern int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file, diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 2575c2db6404..7f67fa4f2f5e 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -1089,7 +1089,7 @@ static void rfcomm_tty_hangup(struct tty_struct *tty) } } -static int rfcomm_tty_tiocmget(struct tty_struct *tty, struct file *filp) +static int rfcomm_tty_tiocmget(struct tty_struct *tty) { struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data; diff --git a/net/irda/ircomm/ircomm_tty_ioctl.c b/net/irda/ircomm/ircomm_tty_ioctl.c index 24cb3aa2bbfb..bb47caeba7e6 100644 --- a/net/irda/ircomm/ircomm_tty_ioctl.c +++ b/net/irda/ircomm/ircomm_tty_ioctl.c @@ -189,12 +189,12 @@ void ircomm_tty_set_termios(struct tty_struct *tty, } /* - * Function ircomm_tty_tiocmget (tty, file) + * Function ircomm_tty_tiocmget (tty) * * * */ -int ircomm_tty_tiocmget(struct tty_struct *tty, struct file *file) +int ircomm_tty_tiocmget(struct tty_struct *tty) { struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data; unsigned int result; -- cgit v1.2.3 From 20b9d17715017ae4dd4ec87fabc36d33b9de708e Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:26:50 +0000 Subject: tiocmset: kill the file pointer argument Doing tiocmget was such fun we should do tiocmset as well for the same reasons Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/char/amiserial.c | 4 ++-- drivers/char/cyclades.c | 2 +- drivers/char/epca.c | 4 ++-- drivers/char/ip2/ip2main.c | 4 ++-- drivers/char/isicom.c | 4 ++-- drivers/char/istallion.c | 2 +- drivers/char/moxa.c | 4 ++-- drivers/char/mxser.c | 2 +- drivers/char/nozomi.c | 4 ++-- drivers/char/pcmcia/ipwireless/tty.c | 2 +- drivers/char/pcmcia/synclink_cs.c | 6 +++--- drivers/char/riscom8.c | 4 ++-- drivers/char/rocket.c | 4 ++-- drivers/char/serial167.c | 3 +-- drivers/char/specialix.c | 2 +- drivers/char/stallion.c | 2 +- drivers/char/sx.c | 4 ++-- drivers/char/synclink.c | 6 +++--- drivers/char/synclink_gt.c | 6 +++--- drivers/char/synclinkmp.c | 8 ++++---- drivers/isdn/gigaset/interface.c | 4 ++-- drivers/isdn/gigaset/ser-gigaset.c | 2 +- drivers/isdn/i4l/isdn_tty.c | 2 +- drivers/mmc/card/sdio_uart.c | 2 +- drivers/net/irda/irtty-sir.c | 2 +- drivers/net/usb/hso.c | 6 +++--- drivers/net/wan/pc300_tty.c | 5 ++--- drivers/staging/quatech_usb2/quatech_usb2.c | 2 +- drivers/staging/serqt_usb2/serqt_usb2.c | 5 ++--- drivers/tty/hvc/hvsi.c | 4 ++-- drivers/tty/n_gsm.c | 2 +- drivers/tty/serial/68360serial.c | 2 +- drivers/tty/serial/crisv10.c | 3 +-- drivers/tty/serial/ifx6x60.c | 3 +-- drivers/tty/serial/serial_core.c | 6 ++---- drivers/tty/tty_io.c | 7 +++---- drivers/usb/class/cdc-acm.c | 2 +- drivers/usb/serial/ark3116.c | 2 +- drivers/usb/serial/belkin_sa.c | 4 ++-- drivers/usb/serial/ch341.c | 2 +- drivers/usb/serial/cp210x.c | 15 +++++++-------- drivers/usb/serial/cypress_m8.c | 4 ++-- drivers/usb/serial/digi_acceleport.c | 10 +++++----- drivers/usb/serial/ftdi_sio.c | 4 ++-- drivers/usb/serial/io_edgeport.c | 4 ++-- drivers/usb/serial/io_ti.c | 2 +- drivers/usb/serial/iuu_phoenix.c | 2 +- drivers/usb/serial/keyspan.c | 2 +- drivers/usb/serial/keyspan.h | 2 +- drivers/usb/serial/keyspan_pda.c | 2 +- drivers/usb/serial/kl5kusb105.c | 4 ++-- drivers/usb/serial/kobil_sct.c | 4 ++-- drivers/usb/serial/mct_u232.c | 4 ++-- drivers/usb/serial/mos7720.c | 2 +- drivers/usb/serial/mos7840.c | 2 +- drivers/usb/serial/oti6858.c | 4 ++-- drivers/usb/serial/pl2303.c | 2 +- drivers/usb/serial/sierra.c | 2 +- drivers/usb/serial/spcp8x5.c | 2 +- drivers/usb/serial/ssu100.c | 2 +- drivers/usb/serial/ti_usb_3410_5052.c | 6 +++--- drivers/usb/serial/usb-serial.c | 4 ++-- drivers/usb/serial/usb-wwan.h | 2 +- drivers/usb/serial/usb_wwan.c | 2 +- drivers/usb/serial/whiteheat.c | 4 ++-- include/linux/tty_driver.h | 2 +- include/linux/usb/serial.h | 2 +- include/net/irda/ircomm_tty.h | 2 +- net/bluetooth/rfcomm/tty.c | 2 +- net/irda/ircomm/ircomm_tty_ioctl.c | 4 ++-- 70 files changed, 120 insertions(+), 129 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index bc67e6839059..5c15fad71ad2 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -1216,8 +1216,8 @@ static int rs_tiocmget(struct tty_struct *tty) | (!(status & SER_CTS) ? TIOCM_CTS : 0); } -static int rs_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int rs_tiocmset(struct tty_struct *tty, unsigned int set, + unsigned int clear) { struct async_struct * info = tty->driver_data; unsigned long flags; diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index e7945ddacd18..942b6f2b70a4 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -2483,7 +2483,7 @@ end: } /* cy_tiomget */ static int -cy_tiocmset(struct tty_struct *tty, struct file *file, +cy_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct cyclades_port *info = tty->driver_data; diff --git a/drivers/char/epca.c b/drivers/char/epca.c index ecf6f0a889fc..e5872b59f9cd 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -2015,7 +2015,7 @@ static int pc_tiocmget(struct tty_struct *tty) return mflag; } -static int pc_tiocmset(struct tty_struct *tty, struct file *file, +static int pc_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct channel *ch = tty->driver_data; @@ -2081,7 +2081,7 @@ static int pc_ioctl(struct tty_struct *tty, struct file *file, case TIOCMODS: if (get_user(mstat, (unsigned __user *)argp)) return -EFAULT; - return pc_tiocmset(tty, file, mstat, ~mstat); + return pc_tiocmset(tty, mstat, ~mstat); case TIOCSDTR: spin_lock_irqsave(&epca_lock, flags); ch->omodem |= ch->m_dtr; diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c index 476cd087118e..d5f866c7c672 100644 --- a/drivers/char/ip2/ip2main.c +++ b/drivers/char/ip2/ip2main.c @@ -182,7 +182,7 @@ static void ip2_stop(PTTY); static void ip2_start(PTTY); static void ip2_hangup(PTTY); static int ip2_tiocmget(struct tty_struct *tty); -static int ip2_tiocmset(struct tty_struct *tty, struct file *file, +static int ip2_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int ip2_get_icount(struct tty_struct *tty, struct serial_icounter_struct *icount); @@ -2085,7 +2085,7 @@ static int ip2_tiocmget(struct tty_struct *tty) | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0); } -static int ip2_tiocmset(struct tty_struct *tty, struct file *file, +static int ip2_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { i2ChanStrPtr pCh = DevTable[tty->index]; diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 836370bc04c2..60f4d8ae7a49 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -1082,8 +1082,8 @@ static int isicom_tiocmget(struct tty_struct *tty) ((status & ISI_RI ) ? TIOCM_RI : 0); } -static int isicom_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int isicom_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct isi_port *port = tty->driver_data; unsigned long flags; diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c index 7843a847b76a..763b58d58255 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -1524,7 +1524,7 @@ static int stli_tiocmget(struct tty_struct *tty) return stli_mktiocm(portp->asig.sigvalue); } -static int stli_tiocmset(struct tty_struct *tty, struct file *file, +static int stli_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct stliport *portp = tty->driver_data; diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index fdf069bb702f..9f4cd8968a5a 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -200,7 +200,7 @@ static void moxa_stop(struct tty_struct *); static void moxa_start(struct tty_struct *); static void moxa_hangup(struct tty_struct *); static int moxa_tiocmget(struct tty_struct *tty); -static int moxa_tiocmset(struct tty_struct *tty, struct file *file, +static int moxa_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void moxa_poll(unsigned long); static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); @@ -1277,7 +1277,7 @@ static int moxa_tiocmget(struct tty_struct *tty) return flag; } -static int moxa_tiocmset(struct tty_struct *tty, struct file *file, +static int moxa_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct moxa_port *ch; diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index 4d2f03ec06cd..150a862c4989 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -1347,7 +1347,7 @@ static int mxser_tiocmget(struct tty_struct *tty) ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); } -static int mxser_tiocmset(struct tty_struct *tty, struct file *file, +static int mxser_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct mxser_port *info = tty->driver_data; diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index 0e1dff2ffb1e..1b74c48c4016 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -1767,8 +1767,8 @@ static int ntty_tiocmget(struct tty_struct *tty) } /* Sets io controls parameters */ -static int ntty_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int ntty_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct nozomi *dc = get_dc_by_tty(tty); unsigned long flags; diff --git a/drivers/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c index 7d2ef4909a73..748190dfbab0 100644 --- a/drivers/char/pcmcia/ipwireless/tty.c +++ b/drivers/char/pcmcia/ipwireless/tty.c @@ -410,7 +410,7 @@ static int ipw_tiocmget(struct tty_struct *linux_tty) } static int -ipw_tiocmset(struct tty_struct *linux_tty, struct file *file, +ipw_tiocmset(struct tty_struct *linux_tty, unsigned int set, unsigned int clear) { struct ipw_tty *tty = linux_tty->driver_data; diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index 7b68ba6609fe..02127cad0980 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -419,8 +419,8 @@ static void bh_status(MGSLPC_INFO *info); * ioctl handlers */ static int tiocmget(struct tty_struct *tty); -static int tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear); +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); static int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount); static int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params); static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty); @@ -2139,7 +2139,7 @@ static int tiocmget(struct tty_struct *tty) /* set modem control signals (DTR/RTS) */ -static int tiocmset(struct tty_struct *tty, struct file *file, +static int tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index 5d0c98456c93..3666decc6438 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -1115,8 +1115,8 @@ static int rc_tiocmget(struct tty_struct *tty) return result; } -static int rc_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int rc_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct riscom_port *port = tty->driver_data; unsigned long flags; diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c index 75e98efbc8e9..36c108811a81 100644 --- a/drivers/char/rocket.c +++ b/drivers/char/rocket.c @@ -1189,8 +1189,8 @@ static int rp_tiocmget(struct tty_struct *tty) /* * Sets the modem control lines */ -static int rp_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int rp_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct r_port *info = tty->driver_data; diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c index fda90643ead7..89ac542ffff2 100644 --- a/drivers/char/serial167.c +++ b/drivers/char/serial167.c @@ -1331,8 +1331,7 @@ static int cy_tiocmget(struct tty_struct *tty) } /* cy_tiocmget */ static int -cy_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +cy_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct cyclades_port *info = tty->driver_data; int channel; diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c index bfecfbef0895..a6b23847e4a7 100644 --- a/drivers/char/specialix.c +++ b/drivers/char/specialix.c @@ -1778,7 +1778,7 @@ static int sx_tiocmget(struct tty_struct *tty) } -static int sx_tiocmset(struct tty_struct *tty, struct file *file, +static int sx_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct specialix_port *port = tty->driver_data; diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c index 8c2bf3fb5b89..c42dbffbed16 100644 --- a/drivers/char/stallion.c +++ b/drivers/char/stallion.c @@ -1107,7 +1107,7 @@ static int stl_tiocmget(struct tty_struct *tty) return stl_getsignals(portp); } -static int stl_tiocmset(struct tty_struct *tty, struct file *file, +static int stl_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct stlport *portp; diff --git a/drivers/char/sx.c b/drivers/char/sx.c index f46214e60d0c..342c6ae67da5 100644 --- a/drivers/char/sx.c +++ b/drivers/char/sx.c @@ -1879,8 +1879,8 @@ static int sx_tiocmget(struct tty_struct *tty) return sx_getsignals(port); } -static int sx_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int sx_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct sx_port *port = tty->driver_data; int rts = -1, dtr = -1; diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index d359e092904a..691e1094c20b 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -824,7 +824,7 @@ static isr_dispatch_func UscIsrTable[7] = * ioctl call handlers */ static int tiocmget(struct tty_struct *tty); -static int tiocmset(struct tty_struct *tty, struct file *file, +static int tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount __user *user_icount); @@ -2871,8 +2871,8 @@ static int tiocmget(struct tty_struct *tty) /* set modem control signals (DTR/RTS) */ -static int tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct mgsl_struct *info = tty->driver_data; unsigned long flags; diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c index f18ab8af0e1c..04da6d61dc4f 100644 --- a/drivers/char/synclink_gt.c +++ b/drivers/char/synclink_gt.c @@ -513,8 +513,8 @@ static int rx_enable(struct slgt_info *info, int enable); static int modem_input_wait(struct slgt_info *info,int arg); static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr); static int tiocmget(struct tty_struct *tty); -static int tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear); +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); static int set_break(struct tty_struct *tty, int break_state); static int get_interface(struct slgt_info *info, int __user *if_mode); static int set_interface(struct slgt_info *info, int if_mode); @@ -3223,7 +3223,7 @@ static int tiocmget(struct tty_struct *tty) * TIOCMSET = set/clear signal values * value bit mask for command */ -static int tiocmset(struct tty_struct *tty, struct file *file, +static int tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct slgt_info *info = tty->driver_data; diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c index 5900213ae75b..1f9de97e8cfc 100644 --- a/drivers/char/synclinkmp.c +++ b/drivers/char/synclinkmp.c @@ -547,8 +547,8 @@ static int rx_enable(SLMP_INFO *info, int enable); static int modem_input_wait(SLMP_INFO *info,int arg); static int wait_mgsl_event(SLMP_INFO *info, int __user *mask_ptr); static int tiocmget(struct tty_struct *tty); -static int tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear); +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); static int set_break(struct tty_struct *tty, int break_state); static void add_device(SLMP_INFO *info); @@ -3232,8 +3232,8 @@ static int tiocmget(struct tty_struct *tty) /* set modem control signals (DTR/RTS) */ -static int tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { SLMP_INFO *info = tty->driver_data; unsigned long flags; diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index e1a7c14f5f1d..9b2bb491c614 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -123,7 +123,7 @@ static void if_throttle(struct tty_struct *tty); static void if_unthrottle(struct tty_struct *tty); static void if_set_termios(struct tty_struct *tty, struct ktermios *old); static int if_tiocmget(struct tty_struct *tty); -static int if_tiocmset(struct tty_struct *tty, struct file *file, +static int if_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int if_write(struct tty_struct *tty, const unsigned char *buf, int count); @@ -303,7 +303,7 @@ static int if_tiocmget(struct tty_struct *tty) return retval; } -static int if_tiocmset(struct tty_struct *tty, struct file *file, +static int if_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct cardstate *cs; diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c index 0ef09d0eb96b..86a5c4f7775e 100644 --- a/drivers/isdn/gigaset/ser-gigaset.c +++ b/drivers/isdn/gigaset/ser-gigaset.c @@ -440,7 +440,7 @@ static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, if (!set && !clear) return 0; gig_dbg(DEBUG_IF, "tiocmset set %x clear %x", set, clear); - return tty->ops->tiocmset(tty, NULL, set, clear); + return tty->ops->tiocmset(tty, set, clear); } static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c index ba6c2f124b58..0341c69eb152 100644 --- a/drivers/isdn/i4l/isdn_tty.c +++ b/drivers/isdn/i4l/isdn_tty.c @@ -1372,7 +1372,7 @@ isdn_tty_tiocmget(struct tty_struct *tty) } static int -isdn_tty_tiocmset(struct tty_struct *tty, struct file *file, +isdn_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { modem_info *info = (modem_info *) tty->driver_data; diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index 86bb04d821b1..c8c9edb3d7cb 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -970,7 +970,7 @@ static int sdio_uart_tiocmget(struct tty_struct *tty) return result; } -static int sdio_uart_tiocmset(struct tty_struct *tty, struct file *file, +static int sdio_uart_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct sdio_uart_port *port = tty->driver_data; diff --git a/drivers/net/irda/irtty-sir.c b/drivers/net/irda/irtty-sir.c index ee1dde52e8fc..3352b2443e58 100644 --- a/drivers/net/irda/irtty-sir.c +++ b/drivers/net/irda/irtty-sir.c @@ -167,7 +167,7 @@ static int irtty_set_dtr_rts(struct sir_dev *dev, int dtr, int rts) * let's be careful... Jean II */ IRDA_ASSERT(priv->tty->ops->tiocmset != NULL, return -1;); - priv->tty->ops->tiocmset(priv->tty, NULL, set, clear); + priv->tty->ops->tiocmset(priv->tty, set, clear); return 0; } diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index 7c68c456c035..956e1d6e72a5 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -324,7 +324,7 @@ struct hso_device { /* Prototypes */ /*****************************************************************************/ /* Serial driver functions */ -static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, +static int hso_serial_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void ctrl_callback(struct urb *urb); static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial); @@ -1335,7 +1335,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp) /* done */ if (result) - hso_serial_tiocmset(tty, NULL, TIOCM_RTS | TIOCM_DTR, 0); + hso_serial_tiocmset(tty, TIOCM_RTS | TIOCM_DTR, 0); err_out: mutex_unlock(&serial->parent->mutex); return result; @@ -1687,7 +1687,7 @@ static int hso_serial_tiocmget(struct tty_struct *tty) return retval; } -static int hso_serial_tiocmset(struct tty_struct *tty, struct file *file, +static int hso_serial_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { int val = 0; diff --git a/drivers/net/wan/pc300_tty.c b/drivers/net/wan/pc300_tty.c index d999e54a7730..1c65d1c33873 100644 --- a/drivers/net/wan/pc300_tty.c +++ b/drivers/net/wan/pc300_tty.c @@ -131,8 +131,7 @@ static void cpc_tty_trace(pc300dev_t *dev, char* buf, int len, char rxtx); static void cpc_tty_signal_off(pc300dev_t *pc300dev, unsigned char); static void cpc_tty_signal_on(pc300dev_t *pc300dev, unsigned char); -static int pc300_tiocmset(struct tty_struct *, struct file *, - unsigned int, unsigned int); +static int pc300_tiocmset(struct tty_struct *, unsigned int, unsigned int); static int pc300_tiocmget(struct tty_struct *); /* functions called by PC300 driver */ @@ -543,7 +542,7 @@ static int cpc_tty_chars_in_buffer(struct tty_struct *tty) return 0; } -static int pc300_tiocmset(struct tty_struct *tty, struct file *file, +static int pc300_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { st_cpc_tty_area *cpc_tty; diff --git a/drivers/staging/quatech_usb2/quatech_usb2.c b/drivers/staging/quatech_usb2/quatech_usb2.c index 1e50292aef74..3734448d1b82 100644 --- a/drivers/staging/quatech_usb2/quatech_usb2.c +++ b/drivers/staging/quatech_usb2/quatech_usb2.c @@ -1121,7 +1121,7 @@ static int qt2_tiocmget(struct tty_struct *tty) } } -static int qt2_tiocmset(struct tty_struct *tty, struct file *file, +static int qt2_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/staging/serqt_usb2/serqt_usb2.c b/drivers/staging/serqt_usb2/serqt_usb2.c index 56ded56db7b4..39776c1cf10f 100644 --- a/drivers/staging/serqt_usb2/serqt_usb2.c +++ b/drivers/staging/serqt_usb2/serqt_usb2.c @@ -1425,7 +1425,6 @@ static inline int qt_real_tiocmget(struct tty_struct *tty, static inline int qt_real_tiocmset(struct tty_struct *tty, struct usb_serial_port *port, - struct file *file, struct usb_serial *serial, unsigned int value) { @@ -1486,7 +1485,7 @@ static int qt_tiocmget(struct tty_struct *tty) return retval; } -static int qt_tiocmset(struct tty_struct *tty, struct file *file, +static int qt_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { @@ -1506,7 +1505,7 @@ static int qt_tiocmset(struct tty_struct *tty, struct file *file, dbg("%s - port %d\n", __func__, port->number); dbg("%s - qt_port->RxHolding = %d\n", __func__, qt_port->RxHolding); - retval = qt_real_tiocmset(tty, port, file, serial, set); + retval = qt_real_tiocmset(tty, port, serial, set); spin_unlock_irqrestore(&qt_port->lock, flags); return retval; diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c index 55293105a56c..8a8d6373f164 100644 --- a/drivers/tty/hvc/hvsi.c +++ b/drivers/tty/hvc/hvsi.c @@ -1103,8 +1103,8 @@ static int hvsi_tiocmget(struct tty_struct *tty) return hp->mctrl; } -static int hvsi_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int hvsi_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct hvsi_struct *hp = tty->driver_data; unsigned long flags; diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 97e3d509ff82..88477d16b8b7 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2654,7 +2654,7 @@ static int gsmtty_tiocmget(struct tty_struct *tty) return dlci->modem_rx; } -static int gsmtty_tiocmset(struct tty_struct *tty, struct file *filp, +static int gsmtty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct gsm_dlci *dlci = tty->driver_data; diff --git a/drivers/tty/serial/68360serial.c b/drivers/tty/serial/68360serial.c index 2a52cf14ce50..217fe1c299e0 100644 --- a/drivers/tty/serial/68360serial.c +++ b/drivers/tty/serial/68360serial.c @@ -1271,7 +1271,7 @@ static int rs_360_tiocmget(struct tty_struct *tty) return result; } -static int rs_360_tiocmset(struct tty_struct *tty, struct file *file, +static int rs_360_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { #ifdef modem_control diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c index 8cc5c0224b25..b9fcd0bda60c 100644 --- a/drivers/tty/serial/crisv10.c +++ b/drivers/tty/serial/crisv10.c @@ -3581,8 +3581,7 @@ rs_break(struct tty_struct *tty, int break_state) } static int -rs_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +rs_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct e100_serial *info = (struct e100_serial *)tty->driver_data; unsigned long flags; diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index 4d26d39ec344..8ee5a41d340d 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -263,7 +263,6 @@ static int ifx_spi_tiocmget(struct tty_struct *tty) /** * ifx_spi_tiocmset - set modem bits * @tty: the tty structure - * @filp: file handle issuing the request * @set: bits to set * @clear: bits to clear * @@ -272,7 +271,7 @@ static int ifx_spi_tiocmget(struct tty_struct *tty) * * FIXME: do we need to kick the tranfers when we do this ? */ -static int ifx_spi_tiocmset(struct tty_struct *tty, struct file *filp, +static int ifx_spi_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct ifx_spi_device *ifx_dev = tty->driver_data; diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 53e490e47560..623d6bd911d7 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -925,8 +925,7 @@ static int uart_tiocmget(struct tty_struct *tty) } static int -uart_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +uart_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct uart_state *state = tty->driver_data; struct uart_port *uport = state->uart_port; @@ -934,8 +933,7 @@ uart_tiocmset(struct tty_struct *tty, struct file *file, int ret = -EIO; mutex_lock(&port->mutex); - if ((!file || !tty_hung_up_p(file)) && - !(tty->flags & (1 << TTY_IO_ERROR))) { + if (!(tty->flags & (1 << TTY_IO_ERROR))) { uart_update_mctrl(uport, set, clear); ret = 0; } diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index fde5a4dae3dd..83af24ca1e5e 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -2481,7 +2481,6 @@ static int tty_tiocmget(struct tty_struct *tty, int __user *p) /** * tty_tiocmset - set modem status * @tty: tty device - * @file: user file pointer * @cmd: command - clear bits, set bits or set all * @p: pointer to desired bits * @@ -2491,7 +2490,7 @@ static int tty_tiocmget(struct tty_struct *tty, int __user *p) * Locking: none (up to the driver) */ -static int tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int cmd, +static int tty_tiocmset(struct tty_struct *tty, unsigned int cmd, unsigned __user *p) { int retval; @@ -2518,7 +2517,7 @@ static int tty_tiocmset(struct tty_struct *tty, struct file *file, unsigned int } set &= TIOCM_DTR|TIOCM_RTS|TIOCM_OUT1|TIOCM_OUT2|TIOCM_LOOP; clear &= TIOCM_DTR|TIOCM_RTS|TIOCM_OUT1|TIOCM_OUT2|TIOCM_LOOP; - return tty->ops->tiocmset(tty, file, set, clear); + return tty->ops->tiocmset(tty, set, clear); } static int tty_tiocgicount(struct tty_struct *tty, void __user *arg) @@ -2659,7 +2658,7 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case TIOCMSET: case TIOCMBIC: case TIOCMBIS: - return tty_tiocmset(tty, file, cmd, p); + return tty_tiocmset(tty, cmd, p); case TIOCGICOUNT: retval = tty_tiocgicount(tty, p); /* For the moment allow fall through to the old method */ diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 2ae996b7ce7b..e9a26fbd079c 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -791,7 +791,7 @@ static int acm_tty_tiocmget(struct tty_struct *tty) TIOCM_CTS; } -static int acm_tty_tiocmset(struct tty_struct *tty, struct file *file, +static int acm_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct acm *acm = tty->driver_data; diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 35b610aa3f92..2f837e983339 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -511,7 +511,7 @@ static int ark3116_tiocmget(struct tty_struct *tty) (ctrl & UART_MCR_OUT2 ? TIOCM_OUT2 : 0); } -static int ark3116_tiocmset(struct tty_struct *tty, struct file *file, +static int ark3116_tiocmset(struct tty_struct *tty, unsigned set, unsigned clr) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/belkin_sa.c b/drivers/usb/serial/belkin_sa.c index 48fb3bad3cd6..d6921fa1403c 100644 --- a/drivers/usb/serial/belkin_sa.c +++ b/drivers/usb/serial/belkin_sa.c @@ -101,7 +101,7 @@ static void belkin_sa_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios * old); static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state); static int belkin_sa_tiocmget(struct tty_struct *tty); -static int belkin_sa_tiocmset(struct tty_struct *tty, struct file *file, +static int belkin_sa_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); @@ -513,7 +513,7 @@ static int belkin_sa_tiocmget(struct tty_struct *tty) return control_state; } -static int belkin_sa_tiocmset(struct tty_struct *tty, struct file *file, +static int belkin_sa_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index aa0962b72f4c..5cbef313281e 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -431,7 +431,7 @@ out: kfree(break_reg); } -static int ch341_tiocmset(struct tty_struct *tty, struct file *file, +static int ch341_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index b3873815035c..4df3e0cecbae 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -42,9 +42,8 @@ static void cp210x_get_termios_port(struct usb_serial_port *port, static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *, struct ktermios*); static int cp210x_tiocmget(struct tty_struct *); -static int cp210x_tiocmset(struct tty_struct *, struct file *, - unsigned int, unsigned int); -static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *, +static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int); +static int cp210x_tiocmset_port(struct usb_serial_port *port, unsigned int, unsigned int); static void cp210x_break_ctl(struct tty_struct *, int); static int cp210x_startup(struct usb_serial *); @@ -698,14 +697,14 @@ static void cp210x_set_termios(struct tty_struct *tty, } -static int cp210x_tiocmset (struct tty_struct *tty, struct file *file, +static int cp210x_tiocmset (struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; - return cp210x_tiocmset_port(port, file, set, clear); + return cp210x_tiocmset_port(port, set, clear); } -static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, +static int cp210x_tiocmset_port(struct usb_serial_port *port, unsigned int set, unsigned int clear) { unsigned int control = 0; @@ -737,9 +736,9 @@ static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file, static void cp210x_dtr_rts(struct usb_serial_port *p, int on) { if (on) - cp210x_tiocmset_port(p, NULL, TIOCM_DTR|TIOCM_RTS, 0); + cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0); else - cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS); + cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS); } static int cp210x_tiocmget (struct tty_struct *tty) diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 9c96cff691fd..2beb5a66180d 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -174,7 +174,7 @@ static int cypress_ioctl(struct tty_struct *tty, struct file *file, static void cypress_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int cypress_tiocmget(struct tty_struct *tty); -static int cypress_tiocmset(struct tty_struct *tty, struct file *file, +static int cypress_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int cypress_chars_in_buffer(struct tty_struct *tty); static void cypress_throttle(struct tty_struct *tty); @@ -892,7 +892,7 @@ static int cypress_tiocmget(struct tty_struct *tty) } -static int cypress_tiocmset(struct tty_struct *tty, struct file *file, +static int cypress_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 08da46cb5825..86fbba6336c9 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -446,10 +446,10 @@ static void digi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); static void digi_break_ctl(struct tty_struct *tty, int break_state); static int digi_tiocmget(struct tty_struct *tty); -static int digi_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear); +static int digi_tiocmset(struct tty_struct *tty, unsigned int set, + unsigned int clear); static int digi_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count); + const unsigned char *buf, int count); static void digi_write_bulk_callback(struct urb *urb); static int digi_write_room(struct tty_struct *tty); static int digi_chars_in_buffer(struct tty_struct *tty); @@ -1134,8 +1134,8 @@ static int digi_tiocmget(struct tty_struct *tty) } -static int digi_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int digi_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; struct digi_port *priv = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 281d18141051..f521ab1eb60f 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -857,7 +857,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, static void ftdi_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int ftdi_tiocmget(struct tty_struct *tty); -static int ftdi_tiocmset(struct tty_struct *tty, struct file *file, +static int ftdi_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int ftdi_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); @@ -2202,7 +2202,7 @@ out: return ret; } -static int ftdi_tiocmset(struct tty_struct *tty, struct file *file, +static int ftdi_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index e8fe4dcf72f0..0b8846e27a79 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -220,7 +220,7 @@ static int edge_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static void edge_break(struct tty_struct *tty, int break_state); static int edge_tiocmget(struct tty_struct *tty); -static int edge_tiocmset(struct tty_struct *tty, struct file *file, +static int edge_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int edge_get_icount(struct tty_struct *tty, struct serial_icounter_struct *icount); @@ -1568,7 +1568,7 @@ static int get_lsr_info(struct edgeport_port *edge_port, return 0; } -static int edge_tiocmset(struct tty_struct *tty, struct file *file, +static int edge_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 7cb9f5cb91f3..88120523710b 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2444,7 +2444,7 @@ static void edge_set_termios(struct tty_struct *tty, change_port_settings(tty, edge_port, old_termios); } -static int edge_tiocmset(struct tty_struct *tty, struct file *file, +static int edge_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 1d96142f135a..6aca631a407a 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -150,7 +150,7 @@ static void iuu_release(struct usb_serial *serial) } } -static int iuu_tiocmset(struct tty_struct *tty, struct file *file, +static int iuu_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 1beebbb7a20a..c6e968f24e04 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -317,7 +317,7 @@ static int keyspan_tiocmget(struct tty_struct *tty) return value; } -static int keyspan_tiocmset(struct tty_struct *tty, struct file *file, +static int keyspan_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/keyspan.h b/drivers/usb/serial/keyspan.h index 5e5fc71e68df..13fa1d1cc900 100644 --- a/drivers/usb/serial/keyspan.h +++ b/drivers/usb/serial/keyspan.h @@ -60,7 +60,7 @@ static void keyspan_break_ctl (struct tty_struct *tty, int break_state); static int keyspan_tiocmget (struct tty_struct *tty); static int keyspan_tiocmset (struct tty_struct *tty, - struct file *file, unsigned int set, + unsigned int set, unsigned int clear); static int keyspan_fake_startup (struct usb_serial *serial); diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index 49ad2baf77cd..207caabdc4ff 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -478,7 +478,7 @@ static int keyspan_pda_tiocmget(struct tty_struct *tty) return value; } -static int keyspan_pda_tiocmset(struct tty_struct *tty, struct file *file, +static int keyspan_pda_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index a570f5201c73..19373cb7c5bf 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -69,7 +69,7 @@ static void klsi_105_close(struct usb_serial_port *port); static void klsi_105_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int klsi_105_tiocmget(struct tty_struct *tty); -static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file, +static int klsi_105_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void klsi_105_process_read_urb(struct urb *urb); static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, @@ -661,7 +661,7 @@ static int klsi_105_tiocmget(struct tty_struct *tty) return (int)line_state; } -static int klsi_105_tiocmset(struct tty_struct *tty, struct file *file, +static int klsi_105_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { int retval = -EINVAL; diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 81d07fb299b8..22cd0c08f46f 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -78,7 +78,7 @@ static int kobil_write_room(struct tty_struct *tty); static int kobil_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static int kobil_tiocmget(struct tty_struct *tty); -static int kobil_tiocmset(struct tty_struct *tty, struct file *file, +static int kobil_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void kobil_read_int_callback(struct urb *urb); static void kobil_write_callback(struct urb *purb); @@ -544,7 +544,7 @@ static int kobil_tiocmget(struct tty_struct *tty) return result; } -static int kobil_tiocmset(struct tty_struct *tty, struct file *file, +static int kobil_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index 27447095feae..ef49902c5a51 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -102,7 +102,7 @@ static void mct_u232_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static void mct_u232_break_ctl(struct tty_struct *tty, int break_state); static int mct_u232_tiocmget(struct tty_struct *tty); -static int mct_u232_tiocmset(struct tty_struct *tty, struct file *file, +static int mct_u232_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void mct_u232_throttle(struct tty_struct *tty); static void mct_u232_unthrottle(struct tty_struct *tty); @@ -778,7 +778,7 @@ static int mct_u232_tiocmget(struct tty_struct *tty) return control_state; } -static int mct_u232_tiocmset(struct tty_struct *tty, struct file *file, +static int mct_u232_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 5d40d4151b5a..95b1c64cac03 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -1858,7 +1858,7 @@ static int mos7720_tiocmget(struct tty_struct *tty) return result; } -static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, +static int mos7720_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index ee0dc9a0890c..9424178c6689 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1674,7 +1674,7 @@ static int mos7840_tiocmget(struct tty_struct *tty) return result; } -static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, +static int mos7840_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index 4cd3b0ef4e61..63734cb0fb0f 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -145,7 +145,7 @@ static int oti6858_write(struct tty_struct *tty, struct usb_serial_port *port, static int oti6858_write_room(struct tty_struct *tty); static int oti6858_chars_in_buffer(struct tty_struct *tty); static int oti6858_tiocmget(struct tty_struct *tty); -static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, +static int oti6858_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int oti6858_startup(struct usb_serial *serial); static void oti6858_release(struct usb_serial *serial); @@ -624,7 +624,7 @@ static void oti6858_close(struct usb_serial_port *port) usb_kill_urb(port->interrupt_in_urb); } -static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, +static int oti6858_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 6cb4f503a3f1..b797992fa54b 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -505,7 +505,7 @@ static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) return 0; } -static int pl2303_tiocmset(struct tty_struct *tty, struct file *file, +static int pl2303_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 66437f1e9e5b..79ee6c79ad54 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -408,7 +408,7 @@ static int sierra_tiocmget(struct tty_struct *tty) return value; } -static int sierra_tiocmset(struct tty_struct *tty, struct file *file, +static int sierra_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index cac13009fc5c..dfbc543e0db8 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -595,7 +595,7 @@ static int spcp8x5_ioctl(struct tty_struct *tty, struct file *file, return -ENOIOCTLCMD; } -static int spcp8x5_tiocmset(struct tty_struct *tty, struct file *file, +static int spcp8x5_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index b21583fa825c..abceee9d3af9 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -517,7 +517,7 @@ mget_out: return r; } -static int ssu100_tiocmset(struct tty_struct *tty, struct file *file, +static int ssu100_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 223e60e31735..c7fea4a2a1be 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -113,7 +113,7 @@ static int ti_get_icount(struct tty_struct *tty, static void ti_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); static int ti_tiocmget(struct tty_struct *tty); -static int ti_tiocmset(struct tty_struct *tty, struct file *file, +static int ti_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void ti_break(struct tty_struct *tty, int break_state); static void ti_interrupt_callback(struct urb *urb); @@ -1033,8 +1033,8 @@ static int ti_tiocmget(struct tty_struct *tty) } -static int ti_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) +static int ti_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; struct ti_port *tport = usb_get_serial_port_data(port); diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index df105c6531a1..dab679e5b7ea 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -507,7 +507,7 @@ static int serial_tiocmget(struct tty_struct *tty) return -EINVAL; } -static int serial_tiocmset(struct tty_struct *tty, struct file *file, +static int serial_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; @@ -515,7 +515,7 @@ static int serial_tiocmset(struct tty_struct *tty, struct file *file, dbg("%s - port %d", __func__, port->number); if (port->serial->type->tiocmset) - return port->serial->type->tiocmset(tty, file, set, clear); + return port->serial->type->tiocmset(tty, set, clear); return -EINVAL; } diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h index 8b68fc783d5f..4d65f1c8dd93 100644 --- a/drivers/usb/serial/usb-wwan.h +++ b/drivers/usb/serial/usb-wwan.h @@ -16,7 +16,7 @@ extern void usb_wwan_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); extern int usb_wwan_tiocmget(struct tty_struct *tty); -extern int usb_wwan_tiocmset(struct tty_struct *tty, struct file *file, +extern int usb_wwan_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); extern int usb_wwan_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 60f942632cb4..b72912027ae8 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -98,7 +98,7 @@ int usb_wwan_tiocmget(struct tty_struct *tty) } EXPORT_SYMBOL(usb_wwan_tiocmget); -int usb_wwan_tiocmset(struct tty_struct *tty, struct file *file, +int usb_wwan_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index bf850139e0b8..6e0c397e869f 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -157,7 +157,7 @@ static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, static void whiteheat_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); static int whiteheat_tiocmget(struct tty_struct *tty); -static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, +static int whiteheat_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); static int whiteheat_chars_in_buffer(struct tty_struct *tty); @@ -850,7 +850,7 @@ static int whiteheat_tiocmget(struct tty_struct *tty) return modem_signals; } -static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, +static int whiteheat_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 9539d74171db..5dabaa2e6da3 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -272,7 +272,7 @@ struct tty_operations { void (*wait_until_sent)(struct tty_struct *tty, int timeout); void (*send_xchar)(struct tty_struct *tty, char ch); int (*tiocmget)(struct tty_struct *tty); - int (*tiocmset)(struct tty_struct *tty, struct file *file, + int (*tiocmset)(struct tty_struct *tty, unsigned int set, unsigned int clear); int (*resize)(struct tty_struct *tty, struct winsize *ws); int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew); diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index 30b945397d19..c1aa1b243ba3 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -269,7 +269,7 @@ struct usb_serial_driver { void (*throttle)(struct tty_struct *tty); void (*unthrottle)(struct tty_struct *tty); int (*tiocmget)(struct tty_struct *tty); - int (*tiocmset)(struct tty_struct *tty, struct file *file, + int (*tiocmset)(struct tty_struct *tty, unsigned int set, unsigned int clear); int (*get_icount)(struct tty_struct *tty, struct serial_icounter_struct *icount); diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h index fa3793b5392d..980ccb66e1b4 100644 --- a/include/net/irda/ircomm_tty.h +++ b/include/net/irda/ircomm_tty.h @@ -121,7 +121,7 @@ void ircomm_tty_start(struct tty_struct *tty); void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self); extern int ircomm_tty_tiocmget(struct tty_struct *tty); -extern int ircomm_tty_tiocmset(struct tty_struct *tty, struct file *file, +extern int ircomm_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); extern int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 7f67fa4f2f5e..8e78e7447726 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -1098,7 +1098,7 @@ static int rfcomm_tty_tiocmget(struct tty_struct *tty) return dev->modem_status; } -static int rfcomm_tty_tiocmset(struct tty_struct *tty, struct file *filp, unsigned int set, unsigned int clear) +static int rfcomm_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data; struct rfcomm_dlc *dlc = dev->dlc; diff --git a/net/irda/ircomm/ircomm_tty_ioctl.c b/net/irda/ircomm/ircomm_tty_ioctl.c index bb47caeba7e6..5e0e718c930a 100644 --- a/net/irda/ircomm/ircomm_tty_ioctl.c +++ b/net/irda/ircomm/ircomm_tty_ioctl.c @@ -214,12 +214,12 @@ int ircomm_tty_tiocmget(struct tty_struct *tty) } /* - * Function ircomm_tty_tiocmset (tty, file, set, clear) + * Function ircomm_tty_tiocmset (tty, set, clear) * * * */ -int ircomm_tty_tiocmset(struct tty_struct *tty, struct file *file, +int ircomm_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data; -- cgit v1.2.3 From 6caa76b7786891b42b66a0e61e2c2fff2c884620 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 14 Feb 2011 16:27:22 +0000 Subject: tty: now phase out the ioctl file pointer for good Only oddities here are a couple of drivers that bogusly called the ldisc helpers instead of returning -ENOIOCTLCMD. Fix the bug and the rest goes away. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/char/amiserial.c | 2 +- drivers/char/cyclades.c | 2 +- drivers/char/epca.c | 8 ++++---- drivers/char/ip2/ip2main.c | 4 ++-- drivers/char/isicom.c | 2 +- drivers/char/istallion.c | 4 ++-- drivers/char/moxa.c | 2 +- drivers/char/mxser.c | 2 +- drivers/char/nozomi.c | 2 +- drivers/char/pcmcia/ipwireless/tty.c | 4 ++-- drivers/char/riscom8.c | 2 +- drivers/char/rocket.c | 2 +- drivers/char/ser_a2232.c | 6 +++--- drivers/char/serial167.c | 2 +- drivers/char/specialix.c | 2 +- drivers/char/stallion.c | 5 ++--- drivers/char/sx.c | 2 +- drivers/char/synclink.c | 3 +-- drivers/char/synclink_gt.c | 9 ++++----- drivers/char/synclinkmp.c | 5 ++--- drivers/char/ttyprintk.c | 2 +- drivers/char/vme_scc.c | 4 ++-- drivers/isdn/capi/capi.c | 10 ++-------- drivers/isdn/gigaset/interface.c | 4 ++-- drivers/isdn/i4l/isdn_tty.c | 3 +-- drivers/net/usb/hso.c | 2 +- drivers/tty/n_gsm.c | 2 +- drivers/tty/pty.c | 4 ++-- drivers/tty/serial/68328serial.c | 2 +- drivers/tty/serial/68360serial.c | 2 +- drivers/tty/serial/crisv10.c | 2 +- drivers/tty/serial/serial_core.c | 4 ++-- drivers/tty/tty_io.c | 4 ++-- drivers/tty/vt/vt_ioctl.c | 6 +++--- drivers/usb/class/cdc-acm.c | 2 +- drivers/usb/serial/usb-serial.c | 2 +- include/linux/tty.h | 2 +- include/linux/tty_driver.h | 9 ++++----- include/net/irda/ircomm_tty.h | 2 +- net/bluetooth/rfcomm/tty.c | 2 +- net/irda/ircomm/ircomm_tty_ioctl.c | 4 ++-- 41 files changed, 66 insertions(+), 78 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index 5c15fad71ad2..f214e5022472 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -1293,7 +1293,7 @@ static int rs_get_icount(struct tty_struct *tty, return 0; } -static int rs_ioctl(struct tty_struct *tty, struct file * file, +static int rs_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct async_struct * info = tty->driver_data; diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c index 942b6f2b70a4..c99728f0cd9f 100644 --- a/drivers/char/cyclades.c +++ b/drivers/char/cyclades.c @@ -2680,7 +2680,7 @@ static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, * not recognized by the driver, it should return ENOIOCTLCMD. */ static int -cy_ioctl(struct tty_struct *tty, struct file *file, +cy_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct cyclades_port *info = tty->driver_data; diff --git a/drivers/char/epca.c b/drivers/char/epca.c index e5872b59f9cd..7ad3638967ae 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -175,9 +175,9 @@ static unsigned termios2digi_i(struct channel *ch, unsigned); static unsigned termios2digi_c(struct channel *ch, unsigned); static void epcaparam(struct tty_struct *, struct channel *); static void receive_data(struct channel *, struct tty_struct *tty); -static int pc_ioctl(struct tty_struct *, struct file *, +static int pc_ioctl(struct tty_struct *, unsigned int, unsigned long); -static int info_ioctl(struct tty_struct *, struct file *, +static int info_ioctl(struct tty_struct *, unsigned int, unsigned long); static void pc_set_termios(struct tty_struct *, struct ktermios *); static void do_softint(struct work_struct *work); @@ -1919,7 +1919,7 @@ static void receive_data(struct channel *ch, struct tty_struct *tty) tty_schedule_flip(tty); } -static int info_ioctl(struct tty_struct *tty, struct file *file, +static int info_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { switch (cmd) { @@ -2057,7 +2057,7 @@ static int pc_tiocmset(struct tty_struct *tty, return 0; } -static int pc_ioctl(struct tty_struct *tty, struct file *file, +static int pc_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { digiflow_t dflow; diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c index d5f866c7c672..ea7a8fb08283 100644 --- a/drivers/char/ip2/ip2main.c +++ b/drivers/char/ip2/ip2main.c @@ -173,7 +173,7 @@ static void ip2_flush_chars(PTTY); static int ip2_write_room(PTTY); static int ip2_chars_in_buf(PTTY); static void ip2_flush_buffer(PTTY); -static int ip2_ioctl(PTTY, struct file *, UINT, ULONG); +static int ip2_ioctl(PTTY, UINT, ULONG); static void ip2_set_termios(PTTY, struct ktermios *); static void ip2_set_line_discipline(PTTY); static void ip2_throttle(PTTY); @@ -2127,7 +2127,7 @@ static int ip2_tiocmset(struct tty_struct *tty, /* */ /******************************************************************************/ static int -ip2_ioctl ( PTTY tty, struct file *pFile, UINT cmd, ULONG arg ) +ip2_ioctl ( PTTY tty, UINT cmd, ULONG arg ) { wait_queue_t wait; i2ChanStrPtr pCh = DevTable[tty->index]; diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 60f4d8ae7a49..db1cf9c328d8 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -1167,7 +1167,7 @@ static int isicom_get_serial_info(struct isi_port *port, return 0; } -static int isicom_ioctl(struct tty_struct *tty, struct file *filp, +static int isicom_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct isi_port *port = tty->driver_data; diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c index 763b58d58255..0b266272cccd 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -603,7 +603,7 @@ static int stli_putchar(struct tty_struct *tty, unsigned char ch); static void stli_flushchars(struct tty_struct *tty); static int stli_writeroom(struct tty_struct *tty); static int stli_charsinbuffer(struct tty_struct *tty); -static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); +static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); static void stli_settermios(struct tty_struct *tty, struct ktermios *old); static void stli_throttle(struct tty_struct *tty); static void stli_unthrottle(struct tty_struct *tty); @@ -1556,7 +1556,7 @@ static int stli_tiocmset(struct tty_struct *tty, sizeof(asysigs_t), 0); } -static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) +static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct stliport *portp; struct stlibrd *brdp; diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c index 9f4cd8968a5a..35b0c38590e6 100644 --- a/drivers/char/moxa.c +++ b/drivers/char/moxa.c @@ -287,7 +287,7 @@ static void moxa_low_water_check(void __iomem *ofsAddr) * TTY operations */ -static int moxa_ioctl(struct tty_struct *tty, struct file *file, +static int moxa_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct moxa_port *ch = tty->driver_data; diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c index 150a862c4989..d188f378684d 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -1655,7 +1655,7 @@ static int mxser_cflags_changed(struct mxser_port *info, unsigned long arg, return ret; } -static int mxser_ioctl(struct tty_struct *tty, struct file *file, +static int mxser_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct mxser_port *info = tty->driver_data; diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index 1b74c48c4016..513ba12064ea 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -1824,7 +1824,7 @@ static int ntty_tiocgicount(struct tty_struct *tty, return 0; } -static int ntty_ioctl(struct tty_struct *tty, struct file *file, +static int ntty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct port *port = tty->driver_data; diff --git a/drivers/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c index 748190dfbab0..ef92869502a7 100644 --- a/drivers/char/pcmcia/ipwireless/tty.c +++ b/drivers/char/pcmcia/ipwireless/tty.c @@ -425,7 +425,7 @@ ipw_tiocmset(struct tty_struct *linux_tty, return set_control_lines(tty, set, clear); } -static int ipw_ioctl(struct tty_struct *linux_tty, struct file *file, +static int ipw_ioctl(struct tty_struct *linux_tty, unsigned int cmd, unsigned long arg) { struct ipw_tty *tty = linux_tty->driver_data; @@ -484,7 +484,7 @@ static int ipw_ioctl(struct tty_struct *linux_tty, struct file *file, return tty_perform_flush(linux_tty, arg); } } - return tty_mode_ioctl(linux_tty, file, cmd , arg); + return -ENOIOCTLCMD; } static int add_tty(int j, diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index 3666decc6438..602643a40b4b 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -1236,7 +1236,7 @@ static int rc_get_serial_info(struct riscom_port *port, return copy_to_user(retinfo, &tmp, sizeof(tmp)) ? -EFAULT : 0; } -static int rc_ioctl(struct tty_struct *tty, struct file *filp, +static int rc_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct riscom_port *port = tty->driver_data; diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c index 36c108811a81..3780da8ad12d 100644 --- a/drivers/char/rocket.c +++ b/drivers/char/rocket.c @@ -1326,7 +1326,7 @@ static int get_version(struct r_port *info, struct rocket_version __user *retver } /* IOCTL call handler into the driver */ -static int rp_ioctl(struct tty_struct *tty, struct file *file, +static int rp_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct r_port *info = tty->driver_data; diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c index 9610861d1f5f..3f47c2ead8e5 100644 --- a/drivers/char/ser_a2232.c +++ b/drivers/char/ser_a2232.c @@ -133,8 +133,8 @@ static void a2232_hungup(void *ptr); /* END GENERIC_SERIAL PROTOTYPES */ /* Functions that the TTY driver struct expects */ -static int a2232_ioctl(struct tty_struct *tty, struct file *file, - unsigned int cmd, unsigned long arg); +static int a2232_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg); static void a2232_throttle(struct tty_struct *tty); static void a2232_unthrottle(struct tty_struct *tty); static int a2232_open(struct tty_struct * tty, struct file * filp); @@ -447,7 +447,7 @@ static void a2232_hungup(void *ptr) /*** END OF REAL_DRIVER FUNCTIONS ***/ /*** BEGIN FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/ -static int a2232_ioctl( struct tty_struct *tty, struct file *file, +static int a2232_ioctl( struct tty_struct *tty, unsigned int cmd, unsigned long arg) { return -ENOIOCTLCMD; diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c index 89ac542ffff2..674af6933978 100644 --- a/drivers/char/serial167.c +++ b/drivers/char/serial167.c @@ -1492,7 +1492,7 @@ get_default_timeout(struct cyclades_port *info, unsigned long __user * value) } static int -cy_ioctl(struct tty_struct *tty, struct file *file, +cy_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct cyclades_port *info = tty->driver_data; diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c index a6b23847e4a7..47e5753f732a 100644 --- a/drivers/char/specialix.c +++ b/drivers/char/specialix.c @@ -1928,7 +1928,7 @@ static int sx_get_serial_info(struct specialix_port *port, } -static int sx_ioctl(struct tty_struct *tty, struct file *filp, +static int sx_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct specialix_port *port = tty->driver_data; diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c index c42dbffbed16..4fff5cd3b163 100644 --- a/drivers/char/stallion.c +++ b/drivers/char/stallion.c @@ -1132,14 +1132,13 @@ static int stl_tiocmset(struct tty_struct *tty, return 0; } -static int stl_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) +static int stl_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct stlport *portp; int rc; void __user *argp = (void __user *)arg; - pr_debug("stl_ioctl(tty=%p,file=%p,cmd=%x,arg=%lx)\n", tty, file, cmd, - arg); + pr_debug("stl_ioctl(tty=%p,cmd=%x,arg=%lx)\n", tty, cmd, arg); portp = tty->driver_data; if (portp == NULL) diff --git a/drivers/char/sx.c b/drivers/char/sx.c index 342c6ae67da5..1291462bcddb 100644 --- a/drivers/char/sx.c +++ b/drivers/char/sx.c @@ -1899,7 +1899,7 @@ static int sx_tiocmset(struct tty_struct *tty, return 0; } -static int sx_ioctl(struct tty_struct *tty, struct file *filp, +static int sx_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { int rc; diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index 691e1094c20b..18888d005a0a 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -2962,13 +2962,12 @@ static int msgl_get_icount(struct tty_struct *tty, * Arguments: * * tty pointer to tty instance data - * file pointer to associated file object for device * cmd IOCTL command code * arg command argument/context * * Return Value: 0 if success, otherwise error code */ -static int mgsl_ioctl(struct tty_struct *tty, struct file * file, +static int mgsl_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct mgsl_struct * info = tty->driver_data; diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c index 04da6d61dc4f..a35dd549a008 100644 --- a/drivers/char/synclink_gt.c +++ b/drivers/char/synclink_gt.c @@ -154,7 +154,7 @@ static void flush_buffer(struct tty_struct *tty); static void tx_hold(struct tty_struct *tty); static void tx_release(struct tty_struct *tty); -static int ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); +static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); static int chars_in_buffer(struct tty_struct *tty); static void throttle(struct tty_struct * tty); static void unthrottle(struct tty_struct * tty); @@ -1030,13 +1030,12 @@ static void tx_release(struct tty_struct *tty) * Arguments * * tty pointer to tty instance data - * file pointer to associated file object for device * cmd IOCTL command code * arg command argument/context * * Return 0 if success, otherwise error code */ -static int ioctl(struct tty_struct *tty, struct file *file, +static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct slgt_info *info = tty->driver_data; @@ -1200,7 +1199,7 @@ static long set_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *ne return 0; } -static long slgt_compat_ioctl(struct tty_struct *tty, struct file *file, +static long slgt_compat_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct slgt_info *info = tty->driver_data; @@ -1239,7 +1238,7 @@ static long slgt_compat_ioctl(struct tty_struct *tty, struct file *file, case MGSL_IOCSIF: case MGSL_IOCSXSYNC: case MGSL_IOCSXCTRL: - rc = ioctl(tty, file, cmd, arg); + rc = ioctl(tty, cmd, arg); break; } diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c index 1f9de97e8cfc..327343694473 100644 --- a/drivers/char/synclinkmp.c +++ b/drivers/char/synclinkmp.c @@ -520,7 +520,7 @@ static void flush_buffer(struct tty_struct *tty); static void tx_hold(struct tty_struct *tty); static void tx_release(struct tty_struct *tty); -static int ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); +static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); static int chars_in_buffer(struct tty_struct *tty); static void throttle(struct tty_struct * tty); static void unthrottle(struct tty_struct * tty); @@ -1248,13 +1248,12 @@ static void tx_release(struct tty_struct *tty) * Arguments: * * tty pointer to tty instance data - * file pointer to associated file object for device * cmd IOCTL command code * arg command argument/context * * Return Value: 0 if success, otherwise error code */ -static int ioctl(struct tty_struct *tty, struct file *file, +static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { SLMP_INFO *info = tty->driver_data; diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c index c40c1612c8a7..a1f68af4ccf4 100644 --- a/drivers/char/ttyprintk.c +++ b/drivers/char/ttyprintk.c @@ -144,7 +144,7 @@ static int tpk_write_room(struct tty_struct *tty) /* * TTY operations ioctl function. */ -static int tpk_ioctl(struct tty_struct *tty, struct file *file, +static int tpk_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct ttyprintk_port *tpkp = tty->driver_data; diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c index 12de1202d22c..96838640f575 100644 --- a/drivers/char/vme_scc.c +++ b/drivers/char/vme_scc.c @@ -75,7 +75,7 @@ static void scc_hungup(void *ptr); static void scc_close(void *ptr); static int scc_chars_in_buffer(void * ptr); static int scc_open(struct tty_struct * tty, struct file * filp); -static int scc_ioctl(struct tty_struct * tty, struct file * filp, +static int scc_ioctl(struct tty_struct * tty, unsigned int cmd, unsigned long arg); static void scc_throttle(struct tty_struct *tty); static void scc_unthrottle(struct tty_struct *tty); @@ -1046,7 +1046,7 @@ static void scc_unthrottle (struct tty_struct * tty) } -static int scc_ioctl(struct tty_struct *tty, struct file *file, +static int scc_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { return -ENOIOCTLCMD; diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index f80a7c48a35f..0d7088367038 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -1219,16 +1219,10 @@ static int capinc_tty_chars_in_buffer(struct tty_struct *tty) return mp->outbytes; } -static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file, +static int capinc_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { - int error = 0; - switch (cmd) { - default: - error = n_tty_ioctl_helper(tty, file, cmd, arg); - break; - } - return error; + return -ENOIOCTLCMD; } static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios * old) diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index 9b2bb491c614..59de638225fe 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -115,7 +115,7 @@ static int if_config(struct cardstate *cs, int *arg) static int if_open(struct tty_struct *tty, struct file *filp); static void if_close(struct tty_struct *tty, struct file *filp); -static int if_ioctl(struct tty_struct *tty, struct file *file, +static int if_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); static int if_write_room(struct tty_struct *tty); static int if_chars_in_buffer(struct tty_struct *tty); @@ -205,7 +205,7 @@ static void if_close(struct tty_struct *tty, struct file *filp) module_put(cs->driver->owner); } -static int if_ioctl(struct tty_struct *tty, struct file *file, +static int if_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct cardstate *cs; diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c index 0341c69eb152..3d88f15aa218 100644 --- a/drivers/isdn/i4l/isdn_tty.c +++ b/drivers/isdn/i4l/isdn_tty.c @@ -1413,8 +1413,7 @@ isdn_tty_tiocmset(struct tty_struct *tty, } static int -isdn_tty_ioctl(struct tty_struct *tty, struct file *file, - uint cmd, ulong arg) +isdn_tty_ioctl(struct tty_struct *tty, uint cmd, ulong arg) { modem_info *info = (modem_info *) tty->driver_data; int retval; diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index 956e1d6e72a5..2ad58a0377b7 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -1730,7 +1730,7 @@ static int hso_serial_tiocmset(struct tty_struct *tty, USB_CTRL_SET_TIMEOUT); } -static int hso_serial_ioctl(struct tty_struct *tty, struct file *file, +static int hso_serial_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct hso_serial *serial = get_serial_by_tty(tty); diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 88477d16b8b7..50f3ffd610b7 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2671,7 +2671,7 @@ static int gsmtty_tiocmset(struct tty_struct *tty, } -static int gsmtty_ioctl(struct tty_struct *tty, struct file *filp, +static int gsmtty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { return -ENOIOCTLCMD; diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 923a48585501..c88029af84dd 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -334,7 +334,7 @@ free_mem_out: return -ENOMEM; } -static int pty_bsd_ioctl(struct tty_struct *tty, struct file *file, +static int pty_bsd_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { switch (cmd) { @@ -489,7 +489,7 @@ static struct ctl_table pty_root_table[] = { }; -static int pty_unix98_ioctl(struct tty_struct *tty, struct file *file, +static int pty_unix98_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { switch (cmd) { diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c index a9d99856c892..1de0e8d4bde1 100644 --- a/drivers/tty/serial/68328serial.c +++ b/drivers/tty/serial/68328serial.c @@ -945,7 +945,7 @@ static void send_break(struct m68k_serial * info, unsigned int duration) local_irq_restore(flags); } -static int rs_ioctl(struct tty_struct *tty, struct file * file, +static int rs_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { int error; diff --git a/drivers/tty/serial/68360serial.c b/drivers/tty/serial/68360serial.c index 217fe1c299e0..514a356d8d64 100644 --- a/drivers/tty/serial/68360serial.c +++ b/drivers/tty/serial/68360serial.c @@ -1405,7 +1405,7 @@ static int rs_360_get_icount(struct tty_struct *tty, return 0; } -static int rs_360_ioctl(struct tty_struct *tty, struct file * file, +static int rs_360_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { int error; diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c index b9fcd0bda60c..225123b37f19 100644 --- a/drivers/tty/serial/crisv10.c +++ b/drivers/tty/serial/crisv10.c @@ -3647,7 +3647,7 @@ rs_tiocmget(struct tty_struct *tty) static int -rs_ioctl(struct tty_struct *tty, struct file * file, +rs_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct e100_serial * info = (struct e100_serial *)tty->driver_data; diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 623d6bd911d7..733fe8e73f0f 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1099,7 +1099,7 @@ static int uart_get_icount(struct tty_struct *tty, * Called via sys_ioctl. We can use spin_lock_irq() here. */ static int -uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, +uart_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct uart_state *state = tty->driver_data; @@ -1152,7 +1152,7 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, mutex_lock(&port->mutex); - if (tty_hung_up_p(filp)) { + if (tty->flags & (1 << TTY_IO_ERROR)) { ret = -EIO; goto out_up; } diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 83af24ca1e5e..20a862a2a0c2 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -2676,7 +2676,7 @@ long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; } if (tty->ops->ioctl) { - retval = (tty->ops->ioctl)(tty, file, cmd, arg); + retval = (tty->ops->ioctl)(tty, cmd, arg); if (retval != -ENOIOCTLCMD) return retval; } @@ -2704,7 +2704,7 @@ static long tty_compat_ioctl(struct file *file, unsigned int cmd, return -EINVAL; if (tty->ops->compat_ioctl) { - retval = (tty->ops->compat_ioctl)(tty, file, cmd, arg); + retval = (tty->ops->compat_ioctl)(tty, cmd, arg); if (retval != -ENOIOCTLCMD) return retval; } diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c index 9e9a901442a3..b64804965316 100644 --- a/drivers/tty/vt/vt_ioctl.c +++ b/drivers/tty/vt/vt_ioctl.c @@ -495,7 +495,7 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_ * We handle the console-specific ioctl's here. We allow the * capability to modify any console, not just the fg_console. */ -int vt_ioctl(struct tty_struct *tty, struct file * file, +int vt_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct vc_data *vc = tty->driver_data; @@ -1495,7 +1495,7 @@ compat_unimap_ioctl(unsigned int cmd, struct compat_unimapdesc __user *user_ud, return 0; } -long vt_compat_ioctl(struct tty_struct *tty, struct file * file, +long vt_compat_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct vc_data *vc = tty->driver_data; @@ -1581,7 +1581,7 @@ out: fallback: tty_unlock(); - return vt_ioctl(tty, file, cmd, arg); + return vt_ioctl(tty, cmd, arg); } diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index e9a26fbd079c..8d994a8bdc90 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -813,7 +813,7 @@ static int acm_tty_tiocmset(struct tty_struct *tty, return acm_set_control(acm, acm->ctrlout = newctrl); } -static int acm_tty_ioctl(struct tty_struct *tty, struct file *file, +static int acm_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct acm *acm = tty->driver_data; diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index b1110e136c33..a72575349744 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -406,7 +406,7 @@ static void serial_unthrottle(struct tty_struct *tty) port->serial->type->unthrottle(tty); } -static int serial_ioctl(struct tty_struct *tty, struct file *file, +static int serial_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; diff --git a/include/linux/tty.h b/include/linux/tty.h index 54e4eaaa0561..483df15146d2 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -584,7 +584,7 @@ extern int pcxe_open(struct tty_struct *tty, struct file *filp); /* vt.c */ -extern int vt_ioctl(struct tty_struct *tty, struct file *file, +extern int vt_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); extern long vt_compat_ioctl(struct tty_struct *tty, struct file * file, diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 5dabaa2e6da3..9deeac855240 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -98,8 +98,7 @@ * * Note: Do not call this function directly, call tty_write_room * - * int (*ioctl)(struct tty_struct *tty, struct file * file, - * unsigned int cmd, unsigned long arg); + * int (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); * * This routine allows the tty driver to implement * device-specific ioctls. If the ioctl number passed in cmd @@ -107,7 +106,7 @@ * * Optional * - * long (*compat_ioctl)(struct tty_struct *tty, struct file * file, + * long (*compat_ioctl)(struct tty_struct *tty,, * unsigned int cmd, unsigned long arg); * * implement ioctl processing for 32 bit process on 64 bit system @@ -256,9 +255,9 @@ struct tty_operations { void (*flush_chars)(struct tty_struct *tty); int (*write_room)(struct tty_struct *tty); int (*chars_in_buffer)(struct tty_struct *tty); - int (*ioctl)(struct tty_struct *tty, struct file * file, + int (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); - long (*compat_ioctl)(struct tty_struct *tty, struct file * file, + long (*compat_ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg); void (*set_termios)(struct tty_struct *tty, struct ktermios * old); void (*throttle)(struct tty_struct * tty); diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h index 980ccb66e1b4..59ba38bc400f 100644 --- a/include/net/irda/ircomm_tty.h +++ b/include/net/irda/ircomm_tty.h @@ -123,7 +123,7 @@ void ircomm_tty_check_modem_status(struct ircomm_tty_cb *self); extern int ircomm_tty_tiocmget(struct tty_struct *tty); extern int ircomm_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); -extern int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file, +extern int ircomm_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); extern void ircomm_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios); diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c index 8e78e7447726..b1805ff95415 100644 --- a/net/bluetooth/rfcomm/tty.c +++ b/net/bluetooth/rfcomm/tty.c @@ -830,7 +830,7 @@ static int rfcomm_tty_write_room(struct tty_struct *tty) return room; } -static int rfcomm_tty_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg) +static int rfcomm_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { BT_DBG("tty %p cmd 0x%02x", tty, cmd); diff --git a/net/irda/ircomm/ircomm_tty_ioctl.c b/net/irda/ircomm/ircomm_tty_ioctl.c index 5e0e718c930a..77c5e6499f8f 100644 --- a/net/irda/ircomm/ircomm_tty_ioctl.c +++ b/net/irda/ircomm/ircomm_tty_ioctl.c @@ -365,12 +365,12 @@ static int ircomm_tty_set_serial_info(struct ircomm_tty_cb *self, } /* - * Function ircomm_tty_ioctl (tty, file, cmd, arg) + * Function ircomm_tty_ioctl (tty, cmd, arg) * * * */ -int ircomm_tty_ioctl(struct tty_struct *tty, struct file *file, +int ircomm_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data; -- cgit v1.2.3 From bdcffc5a1a28b566a38a4b0d5bcefc78a97f4ecb Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 22 Feb 2011 15:41:47 -0800 Subject: tty: move Kconfig entries into drivers/tty from drivers/char The Kconfig options for the drivers/tty/ files still were hanging around in the "big" drivers/char/Kconfig file, so move them to the proper location under drivers/tty and drivers/tty/hvc/ Signed-off-by: Greg Kroah-Hartman --- drivers/char/Kconfig | 254 +----------------------------------------------- drivers/tty/Kconfig | 150 ++++++++++++++++++++++++++++ drivers/tty/hvc/Kconfig | 105 ++++++++++++++++++++ 3 files changed, 257 insertions(+), 252 deletions(-) create mode 100644 drivers/tty/Kconfig create mode 100644 drivers/tty/hvc/Kconfig (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 17f9b968b988..9b9ab867f50e 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -4,89 +4,7 @@ menu "Character devices" -config VT - bool "Virtual terminal" if EXPERT - depends on !S390 - select INPUT - default y - ---help--- - If you say Y here, you will get support for terminal devices with - display and keyboard devices. These are called "virtual" because you - can run several virtual terminals (also called virtual consoles) on - one physical terminal. This is rather useful, for example one - virtual terminal can collect system messages and warnings, another - one can be used for a text-mode user session, and a third could run - an X session, all in parallel. Switching between virtual terminals - is done with certain key combinations, usually Alt-. - - The setterm command ("man setterm") can be used to change the - properties (such as colors or beeping) of a virtual terminal. The - man page console_codes(4) ("man console_codes") contains the special - character sequences that can be used to change those properties - directly. The fonts used on virtual terminals can be changed with - the setfont ("man setfont") command and the key bindings are defined - with the loadkeys ("man loadkeys") command. - - You need at least one virtual terminal device in order to make use - of your keyboard and monitor. Therefore, only people configuring an - embedded system would want to say N here in order to save some - memory; the only way to log into such a system is then via a serial - or network connection. - - If unsure, say Y, or else you won't be able to do much with your new - shiny Linux system :-) - -config CONSOLE_TRANSLATIONS - depends on VT - default y - bool "Enable character translations in console" if EXPERT - ---help--- - This enables support for font mapping and Unicode translation - on virtual consoles. - -config VT_CONSOLE - bool "Support for console on virtual terminal" if EXPERT - depends on VT - default y - ---help--- - The system console is the device which receives all kernel messages - and warnings and which allows logins in single user mode. If you - answer Y here, a virtual terminal (the device used to interact with - a physical terminal) can be used as system console. This is the most - common mode of operations, so you should say Y here unless you want - the kernel messages be output only to a serial port (in which case - you should say Y to "Console on serial port", below). - - If you do say Y here, by default the currently visible virtual - terminal (/dev/tty0) will be used as system console. You can change - that with a kernel command line option such as "console=tty3" which - would use the third virtual terminal as system console. (Try "man - bootparam" or see the documentation of your boot loader (lilo or - loadlin) about how to pass options to the kernel at boot time.) - - If unsure, say Y. - -config HW_CONSOLE - bool - depends on VT && !S390 && !UML - default y - -config VT_HW_CONSOLE_BINDING - bool "Support for binding and unbinding console drivers" - depends on HW_CONSOLE - default n - ---help--- - The virtual terminal is the device that interacts with the physical - terminal through console drivers. On these systems, at least one - console driver is loaded. In other configurations, additional console - drivers may be enabled, such as the framebuffer console. If more than - 1 console driver is enabled, setting this to 'y' will allow you to - select the console driver that will serve as the backend for the - virtual terminals. - - See for more - information. For framebuffer console users, please refer to - . +source "drivers/tty/Kconfig" config DEVKMEM bool "/dev/kmem virtual device support" @@ -428,71 +346,6 @@ config SGI_MBCS source "drivers/tty/serial/Kconfig" -config UNIX98_PTYS - bool "Unix98 PTY support" if EXPERT - default y - ---help--- - A pseudo terminal (PTY) is a software device consisting of two - halves: a master and a slave. The slave device behaves identical to - a physical terminal; the master device is used by a process to - read data from and write data to the slave, thereby emulating a - terminal. Typical programs for the master side are telnet servers - and xterms. - - Linux has traditionally used the BSD-like names /dev/ptyxx for - masters and /dev/ttyxx for slaves of pseudo terminals. This scheme - has a number of problems. The GNU C library glibc 2.1 and later, - however, supports the Unix98 naming standard: in order to acquire a - pseudo terminal, a process opens /dev/ptmx; the number of the pseudo - terminal is then made available to the process and the pseudo - terminal slave can be accessed as /dev/pts/. What was - traditionally /dev/ttyp2 will then be /dev/pts/2, for example. - - All modern Linux systems use the Unix98 ptys. Say Y unless - you're on an embedded system and want to conserve memory. - -config DEVPTS_MULTIPLE_INSTANCES - bool "Support multiple instances of devpts" - depends on UNIX98_PTYS - default n - ---help--- - Enable support for multiple instances of devpts filesystem. - If you want to have isolated PTY namespaces (eg: in containers), - say Y here. Otherwise, say N. If enabled, each mount of devpts - filesystem with the '-o newinstance' option will create an - independent PTY namespace. - -config LEGACY_PTYS - bool "Legacy (BSD) PTY support" - default y - ---help--- - A pseudo terminal (PTY) is a software device consisting of two - halves: a master and a slave. The slave device behaves identical to - a physical terminal; the master device is used by a process to - read data from and write data to the slave, thereby emulating a - terminal. Typical programs for the master side are telnet servers - and xterms. - - Linux has traditionally used the BSD-like names /dev/ptyxx - for masters and /dev/ttyxx for slaves of pseudo - terminals. This scheme has a number of problems, including - security. This option enables these legacy devices; on most - systems, it is safe to say N. - - -config LEGACY_PTY_COUNT - int "Maximum number of legacy PTY in use" - depends on LEGACY_PTYS - range 0 256 - default "256" - ---help--- - The maximum number of legacy PTYs that can be used at any one time. - The default is 256, and should be more than enough. Embedded - systems may want to reduce this to save memory. - - When not in use, each legacy PTY occupies 12 bytes on 32-bit - architectures and 24 bytes on 64-bit architectures. - config TTY_PRINTK bool "TTY driver to output user messages via printk" depends on EXPERT @@ -612,93 +465,7 @@ config PPDEV If unsure, say N. -config HVC_DRIVER - bool - help - Generic "hypervisor virtual console" infrastructure for various - hypervisors (pSeries, iSeries, Xen, lguest). - It will automatically be selected if one of the back-end console drivers - is selected. - -config HVC_IRQ - bool - -config HVC_CONSOLE - bool "pSeries Hypervisor Virtual Console support" - depends on PPC_PSERIES - select HVC_DRIVER - select HVC_IRQ - help - pSeries machines when partitioned support a hypervisor virtual - console. This driver allows each pSeries partition to have a console - which is accessed via the HMC. - -config HVC_ISERIES - bool "iSeries Hypervisor Virtual Console support" - depends on PPC_ISERIES - default y - select HVC_DRIVER - select HVC_IRQ - select VIOPATH - help - iSeries machines support a hypervisor virtual console. - -config HVC_RTAS - bool "IBM RTAS Console support" - depends on PPC_RTAS - select HVC_DRIVER - help - IBM Console device driver which makes use of RTAS - -config HVC_BEAT - bool "Toshiba's Beat Hypervisor Console support" - depends on PPC_CELLEB - select HVC_DRIVER - help - Toshiba's Cell Reference Set Beat Console device driver - -config HVC_IUCV - bool "z/VM IUCV Hypervisor console support (VM only)" - depends on S390 - select HVC_DRIVER - select IUCV - default y - help - This driver provides a Hypervisor console (HVC) back-end to access - a Linux (console) terminal via a z/VM IUCV communication path. - -config HVC_XEN - bool "Xen Hypervisor Console support" - depends on XEN - select HVC_DRIVER - select HVC_IRQ - default y - help - Xen virtual console device driver - -config HVC_UDBG - bool "udbg based fake hypervisor console" - depends on PPC && EXPERIMENTAL - select HVC_DRIVER - default n - -config HVC_DCC - bool "ARM JTAG DCC console" - depends on ARM - select HVC_DRIVER - help - This console uses the JTAG DCC on ARM to create a console under the HVC - driver. This console is used through a JTAG only on ARM. If you don't have - a JTAG then you probably don't want this option. - -config HVC_BFIN_JTAG - bool "Blackfin JTAG console" - depends on BLACKFIN - select HVC_DRIVER - help - This console uses the Blackfin JTAG to create a console under the - the HVC driver. If you don't have JTAG, then you probably don't - want this option. +source "drivers/tty/hvc/Kconfig" config VIRTIO_CONSOLE tristate "Virtio console" @@ -716,23 +483,6 @@ config VIRTIO_CONSOLE the port which can be used by udev scripts to create a symlink to the device. -config HVCS - tristate "IBM Hypervisor Virtual Console Server support" - depends on PPC_PSERIES && HVC_CONSOLE - help - Partitionable IBM Power5 ppc64 machines allow hosting of - firmware virtual consoles from one Linux partition by - another Linux partition. This driver allows console data - from Linux partitions to be accessed through TTY device - interfaces in the device tree of a Linux partition running - this driver. - - To compile this driver as a module, choose M here: the - module will be called hvcs. Additionally, this module - will depend on arch specific APIs exported from hvcserver.ko - which will also be compiled when this driver is built as a - module. - config IBM_BSR tristate "IBM POWER Barrier Synchronization Register support" depends on PPC_PSERIES diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig new file mode 100644 index 000000000000..9cfbdb318ed9 --- /dev/null +++ b/drivers/tty/Kconfig @@ -0,0 +1,150 @@ +config VT + bool "Virtual terminal" if EXPERT + depends on !S390 + select INPUT + default y + ---help--- + If you say Y here, you will get support for terminal devices with + display and keyboard devices. These are called "virtual" because you + can run several virtual terminals (also called virtual consoles) on + one physical terminal. This is rather useful, for example one + virtual terminal can collect system messages and warnings, another + one can be used for a text-mode user session, and a third could run + an X session, all in parallel. Switching between virtual terminals + is done with certain key combinations, usually Alt-. + + The setterm command ("man setterm") can be used to change the + properties (such as colors or beeping) of a virtual terminal. The + man page console_codes(4) ("man console_codes") contains the special + character sequences that can be used to change those properties + directly. The fonts used on virtual terminals can be changed with + the setfont ("man setfont") command and the key bindings are defined + with the loadkeys ("man loadkeys") command. + + You need at least one virtual terminal device in order to make use + of your keyboard and monitor. Therefore, only people configuring an + embedded system would want to say N here in order to save some + memory; the only way to log into such a system is then via a serial + or network connection. + + If unsure, say Y, or else you won't be able to do much with your new + shiny Linux system :-) + +config CONSOLE_TRANSLATIONS + depends on VT + default y + bool "Enable character translations in console" if EXPERT + ---help--- + This enables support for font mapping and Unicode translation + on virtual consoles. + +config VT_CONSOLE + bool "Support for console on virtual terminal" if EXPERT + depends on VT + default y + ---help--- + The system console is the device which receives all kernel messages + and warnings and which allows logins in single user mode. If you + answer Y here, a virtual terminal (the device used to interact with + a physical terminal) can be used as system console. This is the most + common mode of operations, so you should say Y here unless you want + the kernel messages be output only to a serial port (in which case + you should say Y to "Console on serial port", below). + + If you do say Y here, by default the currently visible virtual + terminal (/dev/tty0) will be used as system console. You can change + that with a kernel command line option such as "console=tty3" which + would use the third virtual terminal as system console. (Try "man + bootparam" or see the documentation of your boot loader (lilo or + loadlin) about how to pass options to the kernel at boot time.) + + If unsure, say Y. + +config HW_CONSOLE + bool + depends on VT && !S390 && !UML + default y + +config VT_HW_CONSOLE_BINDING + bool "Support for binding and unbinding console drivers" + depends on HW_CONSOLE + default n + ---help--- + The virtual terminal is the device that interacts with the physical + terminal through console drivers. On these systems, at least one + console driver is loaded. In other configurations, additional console + drivers may be enabled, such as the framebuffer console. If more than + 1 console driver is enabled, setting this to 'y' will allow you to + select the console driver that will serve as the backend for the + virtual terminals. + + See for more + information. For framebuffer console users, please refer to + . + +config UNIX98_PTYS + bool "Unix98 PTY support" if EXPERT + default y + ---help--- + A pseudo terminal (PTY) is a software device consisting of two + halves: a master and a slave. The slave device behaves identical to + a physical terminal; the master device is used by a process to + read data from and write data to the slave, thereby emulating a + terminal. Typical programs for the master side are telnet servers + and xterms. + + Linux has traditionally used the BSD-like names /dev/ptyxx for + masters and /dev/ttyxx for slaves of pseudo terminals. This scheme + has a number of problems. The GNU C library glibc 2.1 and later, + however, supports the Unix98 naming standard: in order to acquire a + pseudo terminal, a process opens /dev/ptmx; the number of the pseudo + terminal is then made available to the process and the pseudo + terminal slave can be accessed as /dev/pts/. What was + traditionally /dev/ttyp2 will then be /dev/pts/2, for example. + + All modern Linux systems use the Unix98 ptys. Say Y unless + you're on an embedded system and want to conserve memory. + +config DEVPTS_MULTIPLE_INSTANCES + bool "Support multiple instances of devpts" + depends on UNIX98_PTYS + default n + ---help--- + Enable support for multiple instances of devpts filesystem. + If you want to have isolated PTY namespaces (eg: in containers), + say Y here. Otherwise, say N. If enabled, each mount of devpts + filesystem with the '-o newinstance' option will create an + independent PTY namespace. + +config LEGACY_PTYS + bool "Legacy (BSD) PTY support" + default y + ---help--- + A pseudo terminal (PTY) is a software device consisting of two + halves: a master and a slave. The slave device behaves identical to + a physical terminal; the master device is used by a process to + read data from and write data to the slave, thereby emulating a + terminal. Typical programs for the master side are telnet servers + and xterms. + + Linux has traditionally used the BSD-like names /dev/ptyxx + for masters and /dev/ttyxx for slaves of pseudo + terminals. This scheme has a number of problems, including + security. This option enables these legacy devices; on most + systems, it is safe to say N. + + +config LEGACY_PTY_COUNT + int "Maximum number of legacy PTY in use" + depends on LEGACY_PTYS + range 0 256 + default "256" + ---help--- + The maximum number of legacy PTYs that can be used at any one time. + The default is 256, and should be more than enough. Embedded + systems may want to reduce this to save memory. + + When not in use, each legacy PTY occupies 12 bytes on 32-bit + architectures and 24 bytes on 64-bit architectures. + + diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig new file mode 100644 index 000000000000..6f2c9809f1fb --- /dev/null +++ b/drivers/tty/hvc/Kconfig @@ -0,0 +1,105 @@ +config HVC_DRIVER + bool + help + Generic "hypervisor virtual console" infrastructure for various + hypervisors (pSeries, iSeries, Xen, lguest). + It will automatically be selected if one of the back-end console drivers + is selected. + +config HVC_IRQ + bool + +config HVC_CONSOLE + bool "pSeries Hypervisor Virtual Console support" + depends on PPC_PSERIES + select HVC_DRIVER + select HVC_IRQ + help + pSeries machines when partitioned support a hypervisor virtual + console. This driver allows each pSeries partition to have a console + which is accessed via the HMC. + +config HVC_ISERIES + bool "iSeries Hypervisor Virtual Console support" + depends on PPC_ISERIES + default y + select HVC_DRIVER + select HVC_IRQ + select VIOPATH + help + iSeries machines support a hypervisor virtual console. + +config HVC_RTAS + bool "IBM RTAS Console support" + depends on PPC_RTAS + select HVC_DRIVER + help + IBM Console device driver which makes use of RTAS + +config HVC_BEAT + bool "Toshiba's Beat Hypervisor Console support" + depends on PPC_CELLEB + select HVC_DRIVER + help + Toshiba's Cell Reference Set Beat Console device driver + +config HVC_IUCV + bool "z/VM IUCV Hypervisor console support (VM only)" + depends on S390 + select HVC_DRIVER + select IUCV + default y + help + This driver provides a Hypervisor console (HVC) back-end to access + a Linux (console) terminal via a z/VM IUCV communication path. + +config HVC_XEN + bool "Xen Hypervisor Console support" + depends on XEN + select HVC_DRIVER + select HVC_IRQ + default y + help + Xen virtual console device driver + +config HVC_UDBG + bool "udbg based fake hypervisor console" + depends on PPC && EXPERIMENTAL + select HVC_DRIVER + default n + +config HVC_DCC + bool "ARM JTAG DCC console" + depends on ARM + select HVC_DRIVER + help + This console uses the JTAG DCC on ARM to create a console under the HVC + driver. This console is used through a JTAG only on ARM. If you don't have + a JTAG then you probably don't want this option. + +config HVC_BFIN_JTAG + bool "Blackfin JTAG console" + depends on BLACKFIN + select HVC_DRIVER + help + This console uses the Blackfin JTAG to create a console under the + the HVC driver. If you don't have JTAG, then you probably don't + want this option. + +config HVCS + tristate "IBM Hypervisor Virtual Console Server support" + depends on PPC_PSERIES && HVC_CONSOLE + help + Partitionable IBM Power5 ppc64 machines allow hosting of + firmware virtual consoles from one Linux partition by + another Linux partition. This driver allows console data + from Linux partitions to be accessed through TTY device + interfaces in the device tree of a Linux partition running + this driver. + + To compile this driver as a module, choose M here: the + module will be called hvcs. Additionally, this module + will depend on arch specific APIs exported from hvcserver.ko + which will also be compiled when this driver is built as a + module. + -- cgit v1.2.3 From a6afd9f3e819de4795fcd356e5bfad446e4323f2 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 22 Feb 2011 16:14:56 -0800 Subject: tty: move a number of tty drivers from drivers/char/ to drivers/tty/ As planned by Arnd Bergmann, this moves the following drivers from drivers/char/ to drivers/tty/ as that's where they really belong: amiserial nozomi synclink rocket cyclades moxa mxser isicom bfin_jtag_comm Cc: Arnd Bergmann Cc: Alan Cox Cc: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/char/Kconfig | 172 - drivers/char/Makefile | 11 - drivers/char/amiserial.c | 2178 ----------- drivers/char/bfin_jtag_comm.c | 366 -- drivers/char/cyclades.c | 4200 --------------------- drivers/char/isicom.c | 1736 --------- drivers/char/moxa.c | 2092 ----------- drivers/char/moxa.h | 304 -- drivers/char/mxser.c | 2757 -------------- drivers/char/mxser.h | 150 - drivers/char/nozomi.c | 1993 ---------- drivers/char/rocket.c | 3199 ---------------- drivers/char/rocket.h | 111 - drivers/char/rocket_int.h | 1214 ------ drivers/char/synclink.c | 8119 ----------------------------------------- drivers/char/synclink_gt.c | 5161 -------------------------- drivers/char/synclinkmp.c | 5600 ---------------------------- drivers/tty/Kconfig | 171 + drivers/tty/Makefile | 13 + drivers/tty/amiserial.c | 2178 +++++++++++ drivers/tty/bfin_jtag_comm.c | 366 ++ drivers/tty/cyclades.c | 4200 +++++++++++++++++++++ drivers/tty/isicom.c | 1736 +++++++++ drivers/tty/moxa.c | 2092 +++++++++++ drivers/tty/moxa.h | 304 ++ drivers/tty/mxser.c | 2757 ++++++++++++++ drivers/tty/mxser.h | 150 + drivers/tty/nozomi.c | 1993 ++++++++++ drivers/tty/rocket.c | 3199 ++++++++++++++++ drivers/tty/rocket.h | 111 + drivers/tty/rocket_int.h | 1214 ++++++ drivers/tty/synclink.c | 8119 +++++++++++++++++++++++++++++++++++++++++ drivers/tty/synclink_gt.c | 5161 ++++++++++++++++++++++++++ drivers/tty/synclinkmp.c | 5600 ++++++++++++++++++++++++++++ 34 files changed, 39364 insertions(+), 39363 deletions(-) delete mode 100644 drivers/char/amiserial.c delete mode 100644 drivers/char/bfin_jtag_comm.c delete mode 100644 drivers/char/cyclades.c delete mode 100644 drivers/char/isicom.c delete mode 100644 drivers/char/moxa.c delete mode 100644 drivers/char/moxa.h delete mode 100644 drivers/char/mxser.c delete mode 100644 drivers/char/mxser.h delete mode 100644 drivers/char/nozomi.c delete mode 100644 drivers/char/rocket.c delete mode 100644 drivers/char/rocket.h delete mode 100644 drivers/char/rocket_int.h delete mode 100644 drivers/char/synclink.c delete mode 100644 drivers/char/synclink_gt.c delete mode 100644 drivers/char/synclinkmp.c create mode 100644 drivers/tty/amiserial.c create mode 100644 drivers/tty/bfin_jtag_comm.c create mode 100644 drivers/tty/cyclades.c create mode 100644 drivers/tty/isicom.c create mode 100644 drivers/tty/moxa.c create mode 100644 drivers/tty/moxa.h create mode 100644 drivers/tty/mxser.c create mode 100644 drivers/tty/mxser.h create mode 100644 drivers/tty/nozomi.c create mode 100644 drivers/tty/rocket.c create mode 100644 drivers/tty/rocket.h create mode 100644 drivers/tty/rocket_int.h create mode 100644 drivers/tty/synclink.c create mode 100644 drivers/tty/synclink_gt.c create mode 100644 drivers/tty/synclinkmp.c (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 9b9ab867f50e..1adfac6a7b0b 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -15,36 +15,6 @@ config DEVKMEM kind of kernel debugging operations. When in doubt, say "N". -config BFIN_JTAG_COMM - tristate "Blackfin JTAG Communication" - depends on BLACKFIN - help - Add support for emulating a TTY device over the Blackfin JTAG. - - To compile this driver as a module, choose M here: the - module will be called bfin_jtag_comm. - -config BFIN_JTAG_COMM_CONSOLE - bool "Console on Blackfin JTAG" - depends on BFIN_JTAG_COMM=y - -config SERIAL_NONSTANDARD - bool "Non-standard serial port support" - depends on HAS_IOMEM - ---help--- - Say Y here if you have any non-standard serial boards -- boards - which aren't supported using the standard "dumb" serial driver. - This includes intelligent serial boards such as Cyclades, - Digiboards, etc. These are usually used for systems that need many - serial ports because they serve many terminals or dial-in - connections. - - Note that the answer to this question won't directly affect the - kernel: saying N will just cause the configurator to skip all - the questions about non-standard serial boards. - - Most people can say N here. - config COMPUTONE tristate "Computone IntelliPort Plus serial support" depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) @@ -60,50 +30,6 @@ config COMPUTONE To compile this driver as module, choose M here: the module will be called ip2. -config ROCKETPORT - tristate "Comtrol RocketPort support" - depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) - help - This driver supports Comtrol RocketPort and RocketModem PCI boards. - These boards provide 2, 4, 8, 16, or 32 high-speed serial ports or - modems. For information about the RocketPort/RocketModem boards - and this driver read . - - To compile this driver as a module, choose M here: the - module will be called rocket. - - If you want to compile this driver into the kernel, say Y here. If - you don't have a Comtrol RocketPort/RocketModem card installed, say N. - -config CYCLADES - tristate "Cyclades async mux support" - depends on SERIAL_NONSTANDARD && (PCI || ISA) - select FW_LOADER - ---help--- - This driver supports Cyclades Z and Y multiserial boards. - You would need something like this to connect more than two modems to - your Linux box, for instance in order to become a dial-in server. - - For information about the Cyclades-Z card, read - . - - To compile this driver as a module, choose M here: the - module will be called cyclades. - - If you haven't heard about it, it's safe to say N. - -config CYZ_INTR - bool "Cyclades-Z interrupt mode operation (EXPERIMENTAL)" - depends on EXPERIMENTAL && CYCLADES - help - The Cyclades-Z family of multiport cards allows 2 (two) driver op - modes: polling and interrupt. In polling mode, the driver will check - the status of the Cyclades-Z ports every certain amount of time - (which is called polling cycle and is configurable). In interrupt - mode, it will use an interrupt line (IRQ) in order to check the - status of the Cyclades-Z ports. The default op mode is polling. If - unsure, say N. - config DIGIEPCA tristate "Digiboard Intelligent Async Support" depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) @@ -119,94 +45,6 @@ config DIGIEPCA To compile this driver as a module, choose M here: the module will be called epca. -config MOXA_INTELLIO - tristate "Moxa Intellio support" - depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) - select FW_LOADER - help - Say Y here if you have a Moxa Intellio multiport serial card. - - To compile this driver as a module, choose M here: the - module will be called moxa. - -config MOXA_SMARTIO - tristate "Moxa SmartIO support v. 2.0" - depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) - help - Say Y here if you have a Moxa SmartIO multiport serial card and/or - want to help develop a new version of this driver. - - This is upgraded (1.9.1) driver from original Moxa drivers with - changes finally resulting in PCI probing. - - This driver can also be built as a module. The module will be called - mxser. If you want to do that, say M here. - -config ISI - tristate "Multi-Tech multiport card support (EXPERIMENTAL)" - depends on SERIAL_NONSTANDARD && PCI - select FW_LOADER - help - This is a driver for the Multi-Tech cards which provide several - serial ports. The driver is experimental and can currently only be - built as a module. The module will be called isicom. - If you want to do that, choose M here. - -config SYNCLINK - tristate "Microgate SyncLink card support" - depends on SERIAL_NONSTANDARD && PCI && ISA_DMA_API - help - Provides support for the SyncLink ISA and PCI multiprotocol serial - adapters. These adapters support asynchronous and HDLC bit - synchronous communication up to 10Mbps (PCI adapter). - - This driver can only be built as a module ( = code which can be - inserted in and removed from the running kernel whenever you want). - The module will be called synclink. If you want to do that, say M - here. - -config SYNCLINKMP - tristate "SyncLink Multiport support" - depends on SERIAL_NONSTANDARD && PCI - help - Enable support for the SyncLink Multiport (2 or 4 ports) - serial adapter, running asynchronous and HDLC communications up - to 2.048Mbps. Each ports is independently selectable for - RS-232, V.35, RS-449, RS-530, and X.21 - - This driver may be built as a module ( = code which can be - inserted in and removed from the running kernel whenever you want). - The module will be called synclinkmp. If you want to do that, say M - here. - -config SYNCLINK_GT - tristate "SyncLink GT/AC support" - depends on SERIAL_NONSTANDARD && PCI - help - Support for SyncLink GT and SyncLink AC families of - synchronous and asynchronous serial adapters - manufactured by Microgate Systems, Ltd. (www.microgate.com) - -config N_HDLC - tristate "HDLC line discipline support" - depends on SERIAL_NONSTANDARD - help - Allows synchronous HDLC communications with tty device drivers that - support synchronous HDLC such as the Microgate SyncLink adapter. - - This driver can be built as a module ( = code which can be - inserted in and removed from the running kernel whenever you want). - The module will be called n_hdlc. If you want to do that, say M - here. - -config N_GSM - tristate "GSM MUX line discipline support (EXPERIMENTAL)" - depends on EXPERIMENTAL - depends on NET - help - This line discipline provides support for the GSM MUX protocol and - presents the mux as a set of 61 individual tty devices. - config RISCOM8 tristate "SDL RISCom/8 card support" depends on SERIAL_NONSTANDARD @@ -296,16 +134,6 @@ config ISTALLION To compile this driver as a module, choose M here: the module will be called istallion. -config NOZOMI - tristate "HSDPA Broadband Wireless Data Card - Globe Trotter" - depends on PCI && EXPERIMENTAL - help - If you have a HSDPA driver Broadband Wireless Data Card - - Globe Trotter PCMCIA card, say Y here. - - To compile this driver as a module, choose M here, the module - will be called nozomi. - config A2232 tristate "Commodore A2232 serial support (EXPERIMENTAL)" depends on EXPERIMENTAL && ZORRO && BROKEN diff --git a/drivers/char/Makefile b/drivers/char/Makefile index 5bc765d4c3ca..f5dc7c9bce6b 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -5,29 +5,18 @@ obj-y += mem.o random.o obj-$(CONFIG_TTY_PRINTK) += ttyprintk.o obj-y += misc.o -obj-$(CONFIG_BFIN_JTAG_COMM) += bfin_jtag_comm.o obj-$(CONFIG_MVME147_SCC) += generic_serial.o vme_scc.o obj-$(CONFIG_MVME162_SCC) += generic_serial.o vme_scc.o obj-$(CONFIG_BVME6000_SCC) += generic_serial.o vme_scc.o -obj-$(CONFIG_ROCKETPORT) += rocket.o obj-$(CONFIG_SERIAL167) += serial167.o -obj-$(CONFIG_CYCLADES) += cyclades.o obj-$(CONFIG_STALLION) += stallion.o obj-$(CONFIG_ISTALLION) += istallion.o -obj-$(CONFIG_NOZOMI) += nozomi.o obj-$(CONFIG_DIGIEPCA) += epca.o obj-$(CONFIG_SPECIALIX) += specialix.o -obj-$(CONFIG_MOXA_INTELLIO) += moxa.o obj-$(CONFIG_A2232) += ser_a2232.o generic_serial.o obj-$(CONFIG_ATARI_DSP56K) += dsp56k.o -obj-$(CONFIG_MOXA_SMARTIO) += mxser.o obj-$(CONFIG_COMPUTONE) += ip2/ obj-$(CONFIG_RISCOM8) += riscom8.o -obj-$(CONFIG_ISI) += isicom.o -obj-$(CONFIG_SYNCLINK) += synclink.o -obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o -obj-$(CONFIG_SYNCLINK_GT) += synclink_gt.o -obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o obj-$(CONFIG_SX) += sx.o generic_serial.o obj-$(CONFIG_RIO) += rio/ generic_serial.o obj-$(CONFIG_RAW_DRIVER) += raw.o diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c deleted file mode 100644 index f214e5022472..000000000000 --- a/drivers/char/amiserial.c +++ /dev/null @@ -1,2178 +0,0 @@ -/* - * linux/drivers/char/amiserial.c - * - * Serial driver for the amiga builtin port. - * - * This code was created by taking serial.c version 4.30 from kernel - * release 2.3.22, replacing all hardware related stuff with the - * corresponding amiga hardware actions, and removing all irrelevant - * code. As a consequence, it uses many of the constants and names - * associated with the registers and bits of 16550 compatible UARTS - - * but only to keep track of status, etc in the state variables. It - * was done this was to make it easier to keep the code in line with - * (non hardware specific) changes to serial.c. - * - * The port is registered with the tty driver as minor device 64, and - * therefore other ports should should only use 65 upwards. - * - * Richard Lucock 28/12/99 - * - * Copyright (C) 1991, 1992 Linus Torvalds - * Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, - * 1998, 1999 Theodore Ts'o - * - */ - -/* - * Serial driver configuration section. Here are the various options: - * - * SERIAL_PARANOIA_CHECK - * Check the magic number for the async_structure where - * ever possible. - */ - -#include - -#undef SERIAL_PARANOIA_CHECK -#define SERIAL_DO_RESTART - -/* Set of debugging defines */ - -#undef SERIAL_DEBUG_INTR -#undef SERIAL_DEBUG_OPEN -#undef SERIAL_DEBUG_FLOW -#undef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT - -/* Sanity checks */ - -#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT) -#define DBG_CNT(s) printk("(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \ - tty->name, (info->flags), serial_driver->refcount,info->count,tty->count,s) -#else -#define DBG_CNT(s) -#endif - -/* - * End of serial driver configuration section. - */ - -#include - -#include -#include -#include -#include -static char *serial_version = "4.30"; - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include - -#include - -#include -#include - -#define custom amiga_custom -static char *serial_name = "Amiga-builtin serial driver"; - -static struct tty_driver *serial_driver; - -/* number of characters left in xmit buffer before we ask for more */ -#define WAKEUP_CHARS 256 - -static struct async_struct *IRQ_ports; - -static unsigned char current_ctl_bits; - -static void change_speed(struct async_struct *info, struct ktermios *old); -static void rs_wait_until_sent(struct tty_struct *tty, int timeout); - - -static struct serial_state rs_table[1]; - -#define NR_PORTS ARRAY_SIZE(rs_table) - -#include - -#define serial_isroot() (capable(CAP_SYS_ADMIN)) - - -static inline int serial_paranoia_check(struct async_struct *info, - char *name, const char *routine) -{ -#ifdef SERIAL_PARANOIA_CHECK - static const char *badmagic = - "Warning: bad magic number for serial struct (%s) in %s\n"; - static const char *badinfo = - "Warning: null async_struct for (%s) in %s\n"; - - if (!info) { - printk(badinfo, name, routine); - return 1; - } - if (info->magic != SERIAL_MAGIC) { - printk(badmagic, name, routine); - return 1; - } -#endif - return 0; -} - -/* some serial hardware definitions */ -#define SDR_OVRUN (1<<15) -#define SDR_RBF (1<<14) -#define SDR_TBE (1<<13) -#define SDR_TSRE (1<<12) - -#define SERPER_PARENB (1<<15) - -#define AC_SETCLR (1<<15) -#define AC_UARTBRK (1<<11) - -#define SER_DTR (1<<7) -#define SER_RTS (1<<6) -#define SER_DCD (1<<5) -#define SER_CTS (1<<4) -#define SER_DSR (1<<3) - -static __inline__ void rtsdtr_ctrl(int bits) -{ - ciab.pra = ((bits & (SER_RTS | SER_DTR)) ^ (SER_RTS | SER_DTR)) | (ciab.pra & ~(SER_RTS | SER_DTR)); -} - -/* - * ------------------------------------------------------------ - * rs_stop() and rs_start() - * - * This routines are called before setting or resetting tty->stopped. - * They enable or disable transmitter interrupts, as necessary. - * ------------------------------------------------------------ - */ -static void rs_stop(struct tty_struct *tty) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_stop")) - return; - - local_irq_save(flags); - if (info->IER & UART_IER_THRI) { - info->IER &= ~UART_IER_THRI; - /* disable Tx interrupt and remove any pending interrupts */ - custom.intena = IF_TBE; - mb(); - custom.intreq = IF_TBE; - mb(); - } - local_irq_restore(flags); -} - -static void rs_start(struct tty_struct *tty) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_start")) - return; - - local_irq_save(flags); - if (info->xmit.head != info->xmit.tail - && info->xmit.buf - && !(info->IER & UART_IER_THRI)) { - info->IER |= UART_IER_THRI; - custom.intena = IF_SETCLR | IF_TBE; - mb(); - /* set a pending Tx Interrupt, transmitter should restart now */ - custom.intreq = IF_SETCLR | IF_TBE; - mb(); - } - local_irq_restore(flags); -} - -/* - * ---------------------------------------------------------------------- - * - * Here starts the interrupt handling routines. All of the following - * subroutines are declared as inline and are folded into - * rs_interrupt(). They were separated out for readability's sake. - * - * Note: rs_interrupt() is a "fast" interrupt, which means that it - * runs with interrupts turned off. People who may want to modify - * rs_interrupt() should try to keep the interrupt handler as fast as - * possible. After you are done making modifications, it is not a bad - * idea to do: - * - * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c - * - * and look at the resulting assemble code in serial.s. - * - * - Ted Ts'o (tytso@mit.edu), 7-Mar-93 - * ----------------------------------------------------------------------- - */ - -/* - * This routine is used by the interrupt handler to schedule - * processing in the software interrupt portion of the driver. - */ -static void rs_sched_event(struct async_struct *info, - int event) -{ - info->event |= 1 << event; - tasklet_schedule(&info->tlet); -} - -static void receive_chars(struct async_struct *info) -{ - int status; - int serdatr; - struct tty_struct *tty = info->tty; - unsigned char ch, flag; - struct async_icount *icount; - int oe = 0; - - icount = &info->state->icount; - - status = UART_LSR_DR; /* We obviously have a character! */ - serdatr = custom.serdatr; - mb(); - custom.intreq = IF_RBF; - mb(); - - if((serdatr & 0x1ff) == 0) - status |= UART_LSR_BI; - if(serdatr & SDR_OVRUN) - status |= UART_LSR_OE; - - ch = serdatr & 0xff; - icount->rx++; - -#ifdef SERIAL_DEBUG_INTR - printk("DR%02x:%02x...", ch, status); -#endif - flag = TTY_NORMAL; - - /* - * We don't handle parity or frame errors - but I have left - * the code in, since I'm not sure that the errors can't be - * detected. - */ - - if (status & (UART_LSR_BI | UART_LSR_PE | - UART_LSR_FE | UART_LSR_OE)) { - /* - * For statistics only - */ - if (status & UART_LSR_BI) { - status &= ~(UART_LSR_FE | UART_LSR_PE); - icount->brk++; - } else if (status & UART_LSR_PE) - icount->parity++; - else if (status & UART_LSR_FE) - icount->frame++; - if (status & UART_LSR_OE) - icount->overrun++; - - /* - * Now check to see if character should be - * ignored, and mask off conditions which - * should be ignored. - */ - if (status & info->ignore_status_mask) - goto out; - - status &= info->read_status_mask; - - if (status & (UART_LSR_BI)) { -#ifdef SERIAL_DEBUG_INTR - printk("handling break...."); -#endif - flag = TTY_BREAK; - if (info->flags & ASYNC_SAK) - do_SAK(tty); - } else if (status & UART_LSR_PE) - flag = TTY_PARITY; - else if (status & UART_LSR_FE) - flag = TTY_FRAME; - if (status & UART_LSR_OE) { - /* - * Overrun is special, since it's - * reported immediately, and doesn't - * affect the current character - */ - oe = 1; - } - } - tty_insert_flip_char(tty, ch, flag); - if (oe == 1) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - tty_flip_buffer_push(tty); -out: - return; -} - -static void transmit_chars(struct async_struct *info) -{ - custom.intreq = IF_TBE; - mb(); - if (info->x_char) { - custom.serdat = info->x_char | 0x100; - mb(); - info->state->icount.tx++; - info->x_char = 0; - return; - } - if (info->xmit.head == info->xmit.tail - || info->tty->stopped - || info->tty->hw_stopped) { - info->IER &= ~UART_IER_THRI; - custom.intena = IF_TBE; - mb(); - return; - } - - custom.serdat = info->xmit.buf[info->xmit.tail++] | 0x100; - mb(); - info->xmit.tail = info->xmit.tail & (SERIAL_XMIT_SIZE-1); - info->state->icount.tx++; - - if (CIRC_CNT(info->xmit.head, - info->xmit.tail, - SERIAL_XMIT_SIZE) < WAKEUP_CHARS) - rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); - -#ifdef SERIAL_DEBUG_INTR - printk("THRE..."); -#endif - if (info->xmit.head == info->xmit.tail) { - custom.intena = IF_TBE; - mb(); - info->IER &= ~UART_IER_THRI; - } -} - -static void check_modem_status(struct async_struct *info) -{ - unsigned char status = ciab.pra & (SER_DCD | SER_CTS | SER_DSR); - unsigned char dstatus; - struct async_icount *icount; - - /* Determine bits that have changed */ - dstatus = status ^ current_ctl_bits; - current_ctl_bits = status; - - if (dstatus) { - icount = &info->state->icount; - /* update input line counters */ - if (dstatus & SER_DSR) - icount->dsr++; - if (dstatus & SER_DCD) { - icount->dcd++; -#ifdef CONFIG_HARD_PPS - if ((info->flags & ASYNC_HARDPPS_CD) && - !(status & SER_DCD)) - hardpps(); -#endif - } - if (dstatus & SER_CTS) - icount->cts++; - wake_up_interruptible(&info->delta_msr_wait); - } - - if ((info->flags & ASYNC_CHECK_CD) && (dstatus & SER_DCD)) { -#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR)) - printk("ttyS%d CD now %s...", info->line, - (!(status & SER_DCD)) ? "on" : "off"); -#endif - if (!(status & SER_DCD)) - wake_up_interruptible(&info->open_wait); - else { -#ifdef SERIAL_DEBUG_OPEN - printk("doing serial hangup..."); -#endif - if (info->tty) - tty_hangup(info->tty); - } - } - if (info->flags & ASYNC_CTS_FLOW) { - if (info->tty->hw_stopped) { - if (!(status & SER_CTS)) { -#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) - printk("CTS tx start..."); -#endif - info->tty->hw_stopped = 0; - info->IER |= UART_IER_THRI; - custom.intena = IF_SETCLR | IF_TBE; - mb(); - /* set a pending Tx Interrupt, transmitter should restart now */ - custom.intreq = IF_SETCLR | IF_TBE; - mb(); - rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); - return; - } - } else { - if ((status & SER_CTS)) { -#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) - printk("CTS tx stop..."); -#endif - info->tty->hw_stopped = 1; - info->IER &= ~UART_IER_THRI; - /* disable Tx interrupt and remove any pending interrupts */ - custom.intena = IF_TBE; - mb(); - custom.intreq = IF_TBE; - mb(); - } - } - } -} - -static irqreturn_t ser_vbl_int( int irq, void *data) -{ - /* vbl is just a periodic interrupt we tie into to update modem status */ - struct async_struct * info = IRQ_ports; - /* - * TBD - is it better to unregister from this interrupt or to - * ignore it if MSI is clear ? - */ - if(info->IER & UART_IER_MSI) - check_modem_status(info); - return IRQ_HANDLED; -} - -static irqreturn_t ser_rx_int(int irq, void *dev_id) -{ - struct async_struct * info; - -#ifdef SERIAL_DEBUG_INTR - printk("ser_rx_int..."); -#endif - - info = IRQ_ports; - if (!info || !info->tty) - return IRQ_NONE; - - receive_chars(info); - info->last_active = jiffies; -#ifdef SERIAL_DEBUG_INTR - printk("end.\n"); -#endif - return IRQ_HANDLED; -} - -static irqreturn_t ser_tx_int(int irq, void *dev_id) -{ - struct async_struct * info; - - if (custom.serdatr & SDR_TBE) { -#ifdef SERIAL_DEBUG_INTR - printk("ser_tx_int..."); -#endif - - info = IRQ_ports; - if (!info || !info->tty) - return IRQ_NONE; - - transmit_chars(info); - info->last_active = jiffies; -#ifdef SERIAL_DEBUG_INTR - printk("end.\n"); -#endif - } - return IRQ_HANDLED; -} - -/* - * ------------------------------------------------------------------- - * Here ends the serial interrupt routines. - * ------------------------------------------------------------------- - */ - -/* - * This routine is used to handle the "bottom half" processing for the - * serial driver, known also the "software interrupt" processing. - * This processing is done at the kernel interrupt level, after the - * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This - * is where time-consuming activities which can not be done in the - * interrupt driver proper are done; the interrupt driver schedules - * them using rs_sched_event(), and they get done here. - */ - -static void do_softint(unsigned long private_) -{ - struct async_struct *info = (struct async_struct *) private_; - struct tty_struct *tty; - - tty = info->tty; - if (!tty) - return; - - if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) - tty_wakeup(tty); -} - -/* - * --------------------------------------------------------------- - * Low level utility subroutines for the serial driver: routines to - * figure out the appropriate timeout for an interrupt chain, routines - * to initialize and startup a serial port, and routines to shutdown a - * serial port. Useful stuff like that. - * --------------------------------------------------------------- - */ - -static int startup(struct async_struct * info) -{ - unsigned long flags; - int retval=0; - unsigned long page; - - page = get_zeroed_page(GFP_KERNEL); - if (!page) - return -ENOMEM; - - local_irq_save(flags); - - if (info->flags & ASYNC_INITIALIZED) { - free_page(page); - goto errout; - } - - if (info->xmit.buf) - free_page(page); - else - info->xmit.buf = (unsigned char *) page; - -#ifdef SERIAL_DEBUG_OPEN - printk("starting up ttys%d ...", info->line); -#endif - - /* Clear anything in the input buffer */ - - custom.intreq = IF_RBF; - mb(); - - retval = request_irq(IRQ_AMIGA_VERTB, ser_vbl_int, 0, "serial status", info); - if (retval) { - if (serial_isroot()) { - if (info->tty) - set_bit(TTY_IO_ERROR, - &info->tty->flags); - retval = 0; - } - goto errout; - } - - /* enable both Rx and Tx interrupts */ - custom.intena = IF_SETCLR | IF_RBF | IF_TBE; - mb(); - info->IER = UART_IER_MSI; - - /* remember current state of the DCD and CTS bits */ - current_ctl_bits = ciab.pra & (SER_DCD | SER_CTS | SER_DSR); - - IRQ_ports = info; - - info->MCR = 0; - if (info->tty->termios->c_cflag & CBAUD) - info->MCR = SER_DTR | SER_RTS; - rtsdtr_ctrl(info->MCR); - - if (info->tty) - clear_bit(TTY_IO_ERROR, &info->tty->flags); - info->xmit.head = info->xmit.tail = 0; - - /* - * Set up the tty->alt_speed kludge - */ - if (info->tty) { - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - info->tty->alt_speed = 57600; - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - info->tty->alt_speed = 115200; - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - info->tty->alt_speed = 230400; - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - info->tty->alt_speed = 460800; - } - - /* - * and set the speed of the serial port - */ - change_speed(info, NULL); - - info->flags |= ASYNC_INITIALIZED; - local_irq_restore(flags); - return 0; - -errout: - local_irq_restore(flags); - return retval; -} - -/* - * This routine will shutdown a serial port; interrupts are disabled, and - * DTR is dropped if the hangup on close termio flag is on. - */ -static void shutdown(struct async_struct * info) -{ - unsigned long flags; - struct serial_state *state; - - if (!(info->flags & ASYNC_INITIALIZED)) - return; - - state = info->state; - -#ifdef SERIAL_DEBUG_OPEN - printk("Shutting down serial port %d ....\n", info->line); -#endif - - local_irq_save(flags); /* Disable interrupts */ - - /* - * clear delta_msr_wait queue to avoid mem leaks: we may free the irq - * here so the queue might never be waken up - */ - wake_up_interruptible(&info->delta_msr_wait); - - IRQ_ports = NULL; - - /* - * Free the IRQ, if necessary - */ - free_irq(IRQ_AMIGA_VERTB, info); - - if (info->xmit.buf) { - free_page((unsigned long) info->xmit.buf); - info->xmit.buf = NULL; - } - - info->IER = 0; - custom.intena = IF_RBF | IF_TBE; - mb(); - - /* disable break condition */ - custom.adkcon = AC_UARTBRK; - mb(); - - if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) - info->MCR &= ~(SER_DTR|SER_RTS); - rtsdtr_ctrl(info->MCR); - - if (info->tty) - set_bit(TTY_IO_ERROR, &info->tty->flags); - - info->flags &= ~ASYNC_INITIALIZED; - local_irq_restore(flags); -} - - -/* - * This routine is called to set the UART divisor registers to match - * the specified baud rate for a serial port. - */ -static void change_speed(struct async_struct *info, - struct ktermios *old_termios) -{ - int quot = 0, baud_base, baud; - unsigned cflag, cval = 0; - int bits; - unsigned long flags; - - if (!info->tty || !info->tty->termios) - return; - cflag = info->tty->termios->c_cflag; - - /* Byte size is always 8 bits plus parity bit if requested */ - - cval = 3; bits = 10; - if (cflag & CSTOPB) { - cval |= 0x04; - bits++; - } - if (cflag & PARENB) { - cval |= UART_LCR_PARITY; - bits++; - } - if (!(cflag & PARODD)) - cval |= UART_LCR_EPAR; -#ifdef CMSPAR - if (cflag & CMSPAR) - cval |= UART_LCR_SPAR; -#endif - - /* Determine divisor based on baud rate */ - baud = tty_get_baud_rate(info->tty); - if (!baud) - baud = 9600; /* B0 transition handled in rs_set_termios */ - baud_base = info->state->baud_base; - if (baud == 38400 && - ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) - quot = info->state->custom_divisor; - else { - if (baud == 134) - /* Special case since 134 is really 134.5 */ - quot = (2*baud_base / 269); - else if (baud) - quot = baud_base / baud; - } - /* If the quotient is zero refuse the change */ - if (!quot && old_termios) { - /* FIXME: Will need updating for new tty in the end */ - info->tty->termios->c_cflag &= ~CBAUD; - info->tty->termios->c_cflag |= (old_termios->c_cflag & CBAUD); - baud = tty_get_baud_rate(info->tty); - if (!baud) - baud = 9600; - if (baud == 38400 && - ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) - quot = info->state->custom_divisor; - else { - if (baud == 134) - /* Special case since 134 is really 134.5 */ - quot = (2*baud_base / 269); - else if (baud) - quot = baud_base / baud; - } - } - /* As a last resort, if the quotient is zero, default to 9600 bps */ - if (!quot) - quot = baud_base / 9600; - info->quot = quot; - info->timeout = ((info->xmit_fifo_size*HZ*bits*quot) / baud_base); - info->timeout += HZ/50; /* Add .02 seconds of slop */ - - /* CTS flow control flag and modem status interrupts */ - info->IER &= ~UART_IER_MSI; - if (info->flags & ASYNC_HARDPPS_CD) - info->IER |= UART_IER_MSI; - if (cflag & CRTSCTS) { - info->flags |= ASYNC_CTS_FLOW; - info->IER |= UART_IER_MSI; - } else - info->flags &= ~ASYNC_CTS_FLOW; - if (cflag & CLOCAL) - info->flags &= ~ASYNC_CHECK_CD; - else { - info->flags |= ASYNC_CHECK_CD; - info->IER |= UART_IER_MSI; - } - /* TBD: - * Does clearing IER_MSI imply that we should disable the VBL interrupt ? - */ - - /* - * Set up parity check flag - */ - - info->read_status_mask = UART_LSR_OE | UART_LSR_DR; - if (I_INPCK(info->tty)) - info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; - if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) - info->read_status_mask |= UART_LSR_BI; - - /* - * Characters to ignore - */ - info->ignore_status_mask = 0; - if (I_IGNPAR(info->tty)) - info->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; - if (I_IGNBRK(info->tty)) { - info->ignore_status_mask |= UART_LSR_BI; - /* - * If we're ignore parity and break indicators, ignore - * overruns too. (For real raw support). - */ - if (I_IGNPAR(info->tty)) - info->ignore_status_mask |= UART_LSR_OE; - } - /* - * !!! ignore all characters if CREAD is not set - */ - if ((cflag & CREAD) == 0) - info->ignore_status_mask |= UART_LSR_DR; - local_irq_save(flags); - - { - short serper; - - /* Set up the baud rate */ - serper = quot - 1; - - /* Enable or disable parity bit */ - - if(cval & UART_LCR_PARITY) - serper |= (SERPER_PARENB); - - custom.serper = serper; - mb(); - } - - info->LCR = cval; /* Save LCR */ - local_irq_restore(flags); -} - -static int rs_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct async_struct *info; - unsigned long flags; - - info = tty->driver_data; - - if (serial_paranoia_check(info, tty->name, "rs_put_char")) - return 0; - - if (!info->xmit.buf) - return 0; - - local_irq_save(flags); - if (CIRC_SPACE(info->xmit.head, - info->xmit.tail, - SERIAL_XMIT_SIZE) == 0) { - local_irq_restore(flags); - return 0; - } - - info->xmit.buf[info->xmit.head++] = ch; - info->xmit.head &= SERIAL_XMIT_SIZE-1; - local_irq_restore(flags); - return 1; -} - -static void rs_flush_chars(struct tty_struct *tty) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_flush_chars")) - return; - - if (info->xmit.head == info->xmit.tail - || tty->stopped - || tty->hw_stopped - || !info->xmit.buf) - return; - - local_irq_save(flags); - info->IER |= UART_IER_THRI; - custom.intena = IF_SETCLR | IF_TBE; - mb(); - /* set a pending Tx Interrupt, transmitter should restart now */ - custom.intreq = IF_SETCLR | IF_TBE; - mb(); - local_irq_restore(flags); -} - -static int rs_write(struct tty_struct * tty, const unsigned char *buf, int count) -{ - int c, ret = 0; - struct async_struct *info; - unsigned long flags; - - info = tty->driver_data; - - if (serial_paranoia_check(info, tty->name, "rs_write")) - return 0; - - if (!info->xmit.buf) - return 0; - - local_irq_save(flags); - while (1) { - c = CIRC_SPACE_TO_END(info->xmit.head, - info->xmit.tail, - SERIAL_XMIT_SIZE); - if (count < c) - c = count; - if (c <= 0) { - break; - } - memcpy(info->xmit.buf + info->xmit.head, buf, c); - info->xmit.head = ((info->xmit.head + c) & - (SERIAL_XMIT_SIZE-1)); - buf += c; - count -= c; - ret += c; - } - local_irq_restore(flags); - - if (info->xmit.head != info->xmit.tail - && !tty->stopped - && !tty->hw_stopped - && !(info->IER & UART_IER_THRI)) { - info->IER |= UART_IER_THRI; - local_irq_disable(); - custom.intena = IF_SETCLR | IF_TBE; - mb(); - /* set a pending Tx Interrupt, transmitter should restart now */ - custom.intreq = IF_SETCLR | IF_TBE; - mb(); - local_irq_restore(flags); - } - return ret; -} - -static int rs_write_room(struct tty_struct *tty) -{ - struct async_struct *info = tty->driver_data; - - if (serial_paranoia_check(info, tty->name, "rs_write_room")) - return 0; - return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); -} - -static int rs_chars_in_buffer(struct tty_struct *tty) -{ - struct async_struct *info = tty->driver_data; - - if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer")) - return 0; - return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); -} - -static void rs_flush_buffer(struct tty_struct *tty) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_flush_buffer")) - return; - local_irq_save(flags); - info->xmit.head = info->xmit.tail = 0; - local_irq_restore(flags); - tty_wakeup(tty); -} - -/* - * This function is used to send a high-priority XON/XOFF character to - * the device - */ -static void rs_send_xchar(struct tty_struct *tty, char ch) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_send_char")) - return; - - info->x_char = ch; - if (ch) { - /* Make sure transmit interrupts are on */ - - /* Check this ! */ - local_irq_save(flags); - if(!(custom.intenar & IF_TBE)) { - custom.intena = IF_SETCLR | IF_TBE; - mb(); - /* set a pending Tx Interrupt, transmitter should restart now */ - custom.intreq = IF_SETCLR | IF_TBE; - mb(); - } - local_irq_restore(flags); - - info->IER |= UART_IER_THRI; - } -} - -/* - * ------------------------------------------------------------ - * rs_throttle() - * - * This routine is called by the upper-layer tty layer to signal that - * incoming characters should be throttled. - * ------------------------------------------------------------ - */ -static void rs_throttle(struct tty_struct * tty) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; -#ifdef SERIAL_DEBUG_THROTTLE - char buf[64]; - - printk("throttle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); -#endif - - if (serial_paranoia_check(info, tty->name, "rs_throttle")) - return; - - if (I_IXOFF(tty)) - rs_send_xchar(tty, STOP_CHAR(tty)); - - if (tty->termios->c_cflag & CRTSCTS) - info->MCR &= ~SER_RTS; - - local_irq_save(flags); - rtsdtr_ctrl(info->MCR); - local_irq_restore(flags); -} - -static void rs_unthrottle(struct tty_struct * tty) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; -#ifdef SERIAL_DEBUG_THROTTLE - char buf[64]; - - printk("unthrottle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); -#endif - - if (serial_paranoia_check(info, tty->name, "rs_unthrottle")) - return; - - if (I_IXOFF(tty)) { - if (info->x_char) - info->x_char = 0; - else - rs_send_xchar(tty, START_CHAR(tty)); - } - if (tty->termios->c_cflag & CRTSCTS) - info->MCR |= SER_RTS; - local_irq_save(flags); - rtsdtr_ctrl(info->MCR); - local_irq_restore(flags); -} - -/* - * ------------------------------------------------------------ - * rs_ioctl() and friends - * ------------------------------------------------------------ - */ - -static int get_serial_info(struct async_struct * info, - struct serial_struct __user * retinfo) -{ - struct serial_struct tmp; - struct serial_state *state = info->state; - - if (!retinfo) - return -EFAULT; - memset(&tmp, 0, sizeof(tmp)); - tty_lock(); - tmp.type = state->type; - tmp.line = state->line; - tmp.port = state->port; - tmp.irq = state->irq; - tmp.flags = state->flags; - tmp.xmit_fifo_size = state->xmit_fifo_size; - tmp.baud_base = state->baud_base; - tmp.close_delay = state->close_delay; - tmp.closing_wait = state->closing_wait; - tmp.custom_divisor = state->custom_divisor; - tty_unlock(); - if (copy_to_user(retinfo,&tmp,sizeof(*retinfo))) - return -EFAULT; - return 0; -} - -static int set_serial_info(struct async_struct * info, - struct serial_struct __user * new_info) -{ - struct serial_struct new_serial; - struct serial_state old_state, *state; - unsigned int change_irq,change_port; - int retval = 0; - - if (copy_from_user(&new_serial,new_info,sizeof(new_serial))) - return -EFAULT; - - tty_lock(); - state = info->state; - old_state = *state; - - change_irq = new_serial.irq != state->irq; - change_port = (new_serial.port != state->port); - if(change_irq || change_port || (new_serial.xmit_fifo_size != state->xmit_fifo_size)) { - tty_unlock(); - return -EINVAL; - } - - if (!serial_isroot()) { - if ((new_serial.baud_base != state->baud_base) || - (new_serial.close_delay != state->close_delay) || - (new_serial.xmit_fifo_size != state->xmit_fifo_size) || - ((new_serial.flags & ~ASYNC_USR_MASK) != - (state->flags & ~ASYNC_USR_MASK))) - return -EPERM; - state->flags = ((state->flags & ~ASYNC_USR_MASK) | - (new_serial.flags & ASYNC_USR_MASK)); - info->flags = ((info->flags & ~ASYNC_USR_MASK) | - (new_serial.flags & ASYNC_USR_MASK)); - state->custom_divisor = new_serial.custom_divisor; - goto check_and_exit; - } - - if (new_serial.baud_base < 9600) { - tty_unlock(); - return -EINVAL; - } - - /* - * OK, past this point, all the error checking has been done. - * At this point, we start making changes..... - */ - - state->baud_base = new_serial.baud_base; - state->flags = ((state->flags & ~ASYNC_FLAGS) | - (new_serial.flags & ASYNC_FLAGS)); - info->flags = ((state->flags & ~ASYNC_INTERNAL_FLAGS) | - (info->flags & ASYNC_INTERNAL_FLAGS)); - state->custom_divisor = new_serial.custom_divisor; - state->close_delay = new_serial.close_delay * HZ/100; - state->closing_wait = new_serial.closing_wait * HZ/100; - info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; - -check_and_exit: - if (info->flags & ASYNC_INITIALIZED) { - if (((old_state.flags & ASYNC_SPD_MASK) != - (state->flags & ASYNC_SPD_MASK)) || - (old_state.custom_divisor != state->custom_divisor)) { - if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - info->tty->alt_speed = 57600; - if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - info->tty->alt_speed = 115200; - if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - info->tty->alt_speed = 230400; - if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - info->tty->alt_speed = 460800; - change_speed(info, NULL); - } - } else - retval = startup(info); - tty_unlock(); - return retval; -} - - -/* - * get_lsr_info - get line status register info - * - * Purpose: Let user call ioctl() to get info when the UART physically - * is emptied. On bus types like RS485, the transmitter must - * release the bus after transmitting. This must be done when - * the transmit shift register is empty, not be done when the - * transmit holding register is empty. This functionality - * allows an RS485 driver to be written in user space. - */ -static int get_lsr_info(struct async_struct * info, unsigned int __user *value) -{ - unsigned char status; - unsigned int result; - unsigned long flags; - - local_irq_save(flags); - status = custom.serdatr; - mb(); - local_irq_restore(flags); - result = ((status & SDR_TSRE) ? TIOCSER_TEMT : 0); - if (copy_to_user(value, &result, sizeof(int))) - return -EFAULT; - return 0; -} - - -static int rs_tiocmget(struct tty_struct *tty) -{ - struct async_struct * info = tty->driver_data; - unsigned char control, status; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_ioctl")) - return -ENODEV; - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - - control = info->MCR; - local_irq_save(flags); - status = ciab.pra; - local_irq_restore(flags); - return ((control & SER_RTS) ? TIOCM_RTS : 0) - | ((control & SER_DTR) ? TIOCM_DTR : 0) - | (!(status & SER_DCD) ? TIOCM_CAR : 0) - | (!(status & SER_DSR) ? TIOCM_DSR : 0) - | (!(status & SER_CTS) ? TIOCM_CTS : 0); -} - -static int rs_tiocmset(struct tty_struct *tty, unsigned int set, - unsigned int clear) -{ - struct async_struct * info = tty->driver_data; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_ioctl")) - return -ENODEV; - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - - local_irq_save(flags); - if (set & TIOCM_RTS) - info->MCR |= SER_RTS; - if (set & TIOCM_DTR) - info->MCR |= SER_DTR; - if (clear & TIOCM_RTS) - info->MCR &= ~SER_RTS; - if (clear & TIOCM_DTR) - info->MCR &= ~SER_DTR; - rtsdtr_ctrl(info->MCR); - local_irq_restore(flags); - return 0; -} - -/* - * rs_break() --- routine which turns the break handling on or off - */ -static int rs_break(struct tty_struct *tty, int break_state) -{ - struct async_struct * info = tty->driver_data; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_break")) - return -EINVAL; - - local_irq_save(flags); - if (break_state == -1) - custom.adkcon = AC_SETCLR | AC_UARTBRK; - else - custom.adkcon = AC_UARTBRK; - mb(); - local_irq_restore(flags); - return 0; -} - -/* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ -static int rs_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) -{ - struct async_struct *info = tty->driver_data; - struct async_icount cnow; - unsigned long flags; - - local_irq_save(flags); - cnow = info->state->icount; - local_irq_restore(flags); - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->frame = cnow.frame; - icount->overrun = cnow.overrun; - icount->parity = cnow.parity; - icount->brk = cnow.brk; - icount->buf_overrun = cnow.buf_overrun; - - return 0; -} - -static int rs_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct async_struct * info = tty->driver_data; - struct async_icount cprev, cnow; /* kernel counter temps */ - void __user *argp = (void __user *)arg; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, "rs_ioctl")) - return -ENODEV; - - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) && - (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - } - - switch (cmd) { - case TIOCGSERIAL: - return get_serial_info(info, argp); - case TIOCSSERIAL: - return set_serial_info(info, argp); - case TIOCSERCONFIG: - return 0; - - case TIOCSERGETLSR: /* Get line status register */ - return get_lsr_info(info, argp); - - case TIOCSERGSTRUCT: - if (copy_to_user(argp, - info, sizeof(struct async_struct))) - return -EFAULT; - return 0; - - /* - * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - * - mask passed in arg for lines of interest - * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) - * Caller should use TIOCGICOUNT to see which one it was - */ - case TIOCMIWAIT: - local_irq_save(flags); - /* note the counters on entry */ - cprev = info->state->icount; - local_irq_restore(flags); - while (1) { - interruptible_sleep_on(&info->delta_msr_wait); - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - local_irq_save(flags); - cnow = info->state->icount; /* atomic copy */ - local_irq_restore(flags); - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) - return -EIO; /* no change => error */ - if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { - return 0; - } - cprev = cnow; - } - /* NOTREACHED */ - - case TIOCSERGWILD: - case TIOCSERSWILD: - /* "setserial -W" is called in Debian boot */ - printk ("TIOCSER?WILD ioctl obsolete, ignored.\n"); - return 0; - - default: - return -ENOIOCTLCMD; - } - return 0; -} - -static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct async_struct *info = tty->driver_data; - unsigned long flags; - unsigned int cflag = tty->termios->c_cflag; - - change_speed(info, old_termios); - - /* Handle transition to B0 status */ - if ((old_termios->c_cflag & CBAUD) && - !(cflag & CBAUD)) { - info->MCR &= ~(SER_DTR|SER_RTS); - local_irq_save(flags); - rtsdtr_ctrl(info->MCR); - local_irq_restore(flags); - } - - /* Handle transition away from B0 status */ - if (!(old_termios->c_cflag & CBAUD) && - (cflag & CBAUD)) { - info->MCR |= SER_DTR; - if (!(tty->termios->c_cflag & CRTSCTS) || - !test_bit(TTY_THROTTLED, &tty->flags)) { - info->MCR |= SER_RTS; - } - local_irq_save(flags); - rtsdtr_ctrl(info->MCR); - local_irq_restore(flags); - } - - /* Handle turning off CRTSCTS */ - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - rs_start(tty); - } - -#if 0 - /* - * No need to wake up processes in open wait, since they - * sample the CLOCAL flag once, and don't recheck it. - * XXX It's not clear whether the current behavior is correct - * or not. Hence, this may change..... - */ - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&info->open_wait); -#endif -} - -/* - * ------------------------------------------------------------ - * rs_close() - * - * This routine is called when the serial port gets closed. First, we - * wait for the last remaining data to be sent. Then, we unlink its - * async structure from the interrupt chain if necessary, and we free - * that IRQ if nothing is left in the chain. - * ------------------------------------------------------------ - */ -static void rs_close(struct tty_struct *tty, struct file * filp) -{ - struct async_struct * info = tty->driver_data; - struct serial_state *state; - unsigned long flags; - - if (!info || serial_paranoia_check(info, tty->name, "rs_close")) - return; - - state = info->state; - - local_irq_save(flags); - - if (tty_hung_up_p(filp)) { - DBG_CNT("before DEC-hung"); - local_irq_restore(flags); - return; - } - -#ifdef SERIAL_DEBUG_OPEN - printk("rs_close ttys%d, count = %d\n", info->line, state->count); -#endif - if ((tty->count == 1) && (state->count != 1)) { - /* - * Uh, oh. tty->count is 1, which means that the tty - * structure will be freed. state->count should always - * be one in these conditions. If it's greater than - * one, we've got real problems, since it means the - * serial port won't be shutdown. - */ - printk("rs_close: bad serial port count; tty->count is 1, " - "state->count is %d\n", state->count); - state->count = 1; - } - if (--state->count < 0) { - printk("rs_close: bad serial port count for ttys%d: %d\n", - info->line, state->count); - state->count = 0; - } - if (state->count) { - DBG_CNT("before DEC-2"); - local_irq_restore(flags); - return; - } - info->flags |= ASYNC_CLOSING; - /* - * Now we wait for the transmit buffer to clear; and we notify - * the line discipline to only process XON/XOFF characters. - */ - tty->closing = 1; - if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) - tty_wait_until_sent(tty, info->closing_wait); - /* - * At this point we stop accepting input. To do this, we - * disable the receive line status interrupts, and tell the - * interrupt driver to stop checking the data ready bit in the - * line status register. - */ - info->read_status_mask &= ~UART_LSR_DR; - if (info->flags & ASYNC_INITIALIZED) { - /* disable receive interrupts */ - custom.intena = IF_RBF; - mb(); - /* clear any pending receive interrupt */ - custom.intreq = IF_RBF; - mb(); - - /* - * Before we drop DTR, make sure the UART transmitter - * has completely drained; this is especially - * important if there is a transmit FIFO! - */ - rs_wait_until_sent(tty, info->timeout); - } - shutdown(info); - rs_flush_buffer(tty); - - tty_ldisc_flush(tty); - tty->closing = 0; - info->event = 0; - info->tty = NULL; - if (info->blocked_open) { - if (info->close_delay) { - msleep_interruptible(jiffies_to_msecs(info->close_delay)); - } - wake_up_interruptible(&info->open_wait); - } - info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - wake_up_interruptible(&info->close_wait); - local_irq_restore(flags); -} - -/* - * rs_wait_until_sent() --- wait until the transmitter is empty - */ -static void rs_wait_until_sent(struct tty_struct *tty, int timeout) -{ - struct async_struct * info = tty->driver_data; - unsigned long orig_jiffies, char_time; - int tty_was_locked = tty_locked(); - int lsr; - - if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent")) - return; - - if (info->xmit_fifo_size == 0) - return; /* Just in case.... */ - - orig_jiffies = jiffies; - - /* - * tty_wait_until_sent is called from lots of places, - * with or without the BTM. - */ - if (!tty_was_locked) - tty_lock(); - /* - * Set the check interval to be 1/5 of the estimated time to - * send a single character, and make it at least 1. The check - * interval should also be less than the timeout. - * - * Note: we have to use pretty tight timings here to satisfy - * the NIST-PCTS. - */ - char_time = (info->timeout - HZ/50) / info->xmit_fifo_size; - char_time = char_time / 5; - if (char_time == 0) - char_time = 1; - if (timeout) - char_time = min_t(unsigned long, char_time, timeout); - /* - * If the transmitter hasn't cleared in twice the approximate - * amount of time to send the entire FIFO, it probably won't - * ever clear. This assumes the UART isn't doing flow - * control, which is currently the case. Hence, if it ever - * takes longer than info->timeout, this is probably due to a - * UART bug of some kind. So, we clamp the timeout parameter at - * 2*info->timeout. - */ - if (!timeout || timeout > 2*info->timeout) - timeout = 2*info->timeout; -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT - printk("In rs_wait_until_sent(%d) check=%lu...", timeout, char_time); - printk("jiff=%lu...", jiffies); -#endif - while(!((lsr = custom.serdatr) & SDR_TSRE)) { -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT - printk("serdatr = %d (jiff=%lu)...", lsr, jiffies); -#endif - msleep_interruptible(jiffies_to_msecs(char_time)); - if (signal_pending(current)) - break; - if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; - } - __set_current_state(TASK_RUNNING); - if (!tty_was_locked) - tty_unlock(); -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT - printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); -#endif -} - -/* - * rs_hangup() --- called by tty_hangup() when a hangup is signaled. - */ -static void rs_hangup(struct tty_struct *tty) -{ - struct async_struct * info = tty->driver_data; - struct serial_state *state = info->state; - - if (serial_paranoia_check(info, tty->name, "rs_hangup")) - return; - - state = info->state; - - rs_flush_buffer(tty); - shutdown(info); - info->event = 0; - state->count = 0; - info->flags &= ~ASYNC_NORMAL_ACTIVE; - info->tty = NULL; - wake_up_interruptible(&info->open_wait); -} - -/* - * ------------------------------------------------------------ - * rs_open() and friends - * ------------------------------------------------------------ - */ -static int block_til_ready(struct tty_struct *tty, struct file * filp, - struct async_struct *info) -{ -#ifdef DECLARE_WAITQUEUE - DECLARE_WAITQUEUE(wait, current); -#else - struct wait_queue wait = { current, NULL }; -#endif - struct serial_state *state = info->state; - int retval; - int do_clocal = 0, extra_count = 0; - unsigned long flags; - - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if (tty_hung_up_p(filp) || - (info->flags & ASYNC_CLOSING)) { - if (info->flags & ASYNC_CLOSING) - interruptible_sleep_on(&info->close_wait); -#ifdef SERIAL_DO_RESTART - return ((info->flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); -#else - return -EAGAIN; -#endif - } - - /* - * If non-blocking mode is set, or the port is not enabled, - * then make the check up front and then exit. - */ - if ((filp->f_flags & O_NONBLOCK) || - (tty->flags & (1 << TTY_IO_ERROR))) { - info->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - if (tty->termios->c_cflag & CLOCAL) - do_clocal = 1; - - /* - * Block waiting for the carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, state->count is dropped by one, so that - * rs_close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - retval = 0; - add_wait_queue(&info->open_wait, &wait); -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready before block: ttys%d, count = %d\n", - state->line, state->count); -#endif - local_irq_save(flags); - if (!tty_hung_up_p(filp)) { - extra_count = 1; - state->count--; - } - local_irq_restore(flags); - info->blocked_open++; - while (1) { - local_irq_save(flags); - if (tty->termios->c_cflag & CBAUD) - rtsdtr_ctrl(SER_DTR|SER_RTS); - local_irq_restore(flags); - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || - !(info->flags & ASYNC_INITIALIZED)) { -#ifdef SERIAL_DO_RESTART - if (info->flags & ASYNC_HUP_NOTIFY) - retval = -EAGAIN; - else - retval = -ERESTARTSYS; -#else - retval = -EAGAIN; -#endif - break; - } - if (!(info->flags & ASYNC_CLOSING) && - (do_clocal || (!(ciab.pra & SER_DCD)) )) - break; - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready blocking: ttys%d, count = %d\n", - info->line, state->count); -#endif - tty_unlock(); - schedule(); - tty_lock(); - } - __set_current_state(TASK_RUNNING); - remove_wait_queue(&info->open_wait, &wait); - if (extra_count) - state->count++; - info->blocked_open--; -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready after blocking: ttys%d, count = %d\n", - info->line, state->count); -#endif - if (retval) - return retval; - info->flags |= ASYNC_NORMAL_ACTIVE; - return 0; -} - -static int get_async_struct(int line, struct async_struct **ret_info) -{ - struct async_struct *info; - struct serial_state *sstate; - - sstate = rs_table + line; - sstate->count++; - if (sstate->info) { - *ret_info = sstate->info; - return 0; - } - info = kzalloc(sizeof(struct async_struct), GFP_KERNEL); - if (!info) { - sstate->count--; - return -ENOMEM; - } -#ifdef DECLARE_WAITQUEUE - init_waitqueue_head(&info->open_wait); - init_waitqueue_head(&info->close_wait); - init_waitqueue_head(&info->delta_msr_wait); -#endif - info->magic = SERIAL_MAGIC; - info->port = sstate->port; - info->flags = sstate->flags; - info->xmit_fifo_size = sstate->xmit_fifo_size; - info->line = line; - tasklet_init(&info->tlet, do_softint, (unsigned long)info); - info->state = sstate; - if (sstate->info) { - kfree(info); - *ret_info = sstate->info; - return 0; - } - *ret_info = sstate->info = info; - return 0; -} - -/* - * This routine is called whenever a serial port is opened. It - * enables interrupts for a serial port, linking in its async structure into - * the IRQ chain. It also performs the serial-specific - * initialization for the tty structure. - */ -static int rs_open(struct tty_struct *tty, struct file * filp) -{ - struct async_struct *info; - int retval, line; - - line = tty->index; - if ((line < 0) || (line >= NR_PORTS)) { - return -ENODEV; - } - retval = get_async_struct(line, &info); - if (retval) { - return retval; - } - tty->driver_data = info; - info->tty = tty; - if (serial_paranoia_check(info, tty->name, "rs_open")) - return -ENODEV; - -#ifdef SERIAL_DEBUG_OPEN - printk("rs_open %s, count = %d\n", tty->name, info->state->count); -#endif - info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; - - /* - * If the port is the middle of closing, bail out now - */ - if (tty_hung_up_p(filp) || - (info->flags & ASYNC_CLOSING)) { - if (info->flags & ASYNC_CLOSING) - interruptible_sleep_on(&info->close_wait); -#ifdef SERIAL_DO_RESTART - return ((info->flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); -#else - return -EAGAIN; -#endif - } - - /* - * Start up serial port - */ - retval = startup(info); - if (retval) { - return retval; - } - - retval = block_til_ready(tty, filp, info); - if (retval) { -#ifdef SERIAL_DEBUG_OPEN - printk("rs_open returning after block_til_ready with %d\n", - retval); -#endif - return retval; - } - -#ifdef SERIAL_DEBUG_OPEN - printk("rs_open %s successful...", tty->name); -#endif - return 0; -} - -/* - * /proc fs routines.... - */ - -static inline void line_info(struct seq_file *m, struct serial_state *state) -{ - struct async_struct *info = state->info, scr_info; - char stat_buf[30], control, status; - unsigned long flags; - - seq_printf(m, "%d: uart:amiga_builtin",state->line); - - /* - * Figure out the current RS-232 lines - */ - if (!info) { - info = &scr_info; /* This is just for serial_{in,out} */ - - info->magic = SERIAL_MAGIC; - info->flags = state->flags; - info->quot = 0; - info->tty = NULL; - } - local_irq_save(flags); - status = ciab.pra; - control = info ? info->MCR : status; - local_irq_restore(flags); - - stat_buf[0] = 0; - stat_buf[1] = 0; - if(!(control & SER_RTS)) - strcat(stat_buf, "|RTS"); - if(!(status & SER_CTS)) - strcat(stat_buf, "|CTS"); - if(!(control & SER_DTR)) - strcat(stat_buf, "|DTR"); - if(!(status & SER_DSR)) - strcat(stat_buf, "|DSR"); - if(!(status & SER_DCD)) - strcat(stat_buf, "|CD"); - - if (info->quot) { - seq_printf(m, " baud:%d", state->baud_base / info->quot); - } - - seq_printf(m, " tx:%d rx:%d", state->icount.tx, state->icount.rx); - - if (state->icount.frame) - seq_printf(m, " fe:%d", state->icount.frame); - - if (state->icount.parity) - seq_printf(m, " pe:%d", state->icount.parity); - - if (state->icount.brk) - seq_printf(m, " brk:%d", state->icount.brk); - - if (state->icount.overrun) - seq_printf(m, " oe:%d", state->icount.overrun); - - /* - * Last thing is the RS-232 status lines - */ - seq_printf(m, " %s\n", stat_buf+1); -} - -static int rs_proc_show(struct seq_file *m, void *v) -{ - seq_printf(m, "serinfo:1.0 driver:%s\n", serial_version); - line_info(m, &rs_table[0]); - return 0; -} - -static int rs_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, rs_proc_show, NULL); -} - -static const struct file_operations rs_proc_fops = { - .owner = THIS_MODULE, - .open = rs_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* - * --------------------------------------------------------------------- - * rs_init() and friends - * - * rs_init() is called at boot-time to initialize the serial driver. - * --------------------------------------------------------------------- - */ - -/* - * This routine prints out the appropriate serial driver version - * number, and identifies which options were configured into this - * driver. - */ -static void show_serial_version(void) -{ - printk(KERN_INFO "%s version %s\n", serial_name, serial_version); -} - - -static const struct tty_operations serial_ops = { - .open = rs_open, - .close = rs_close, - .write = rs_write, - .put_char = rs_put_char, - .flush_chars = rs_flush_chars, - .write_room = rs_write_room, - .chars_in_buffer = rs_chars_in_buffer, - .flush_buffer = rs_flush_buffer, - .ioctl = rs_ioctl, - .throttle = rs_throttle, - .unthrottle = rs_unthrottle, - .set_termios = rs_set_termios, - .stop = rs_stop, - .start = rs_start, - .hangup = rs_hangup, - .break_ctl = rs_break, - .send_xchar = rs_send_xchar, - .wait_until_sent = rs_wait_until_sent, - .tiocmget = rs_tiocmget, - .tiocmset = rs_tiocmset, - .get_icount = rs_get_icount, - .proc_fops = &rs_proc_fops, -}; - -/* - * The serial driver boot-time initialization code! - */ -static int __init amiga_serial_probe(struct platform_device *pdev) -{ - unsigned long flags; - struct serial_state * state; - int error; - - serial_driver = alloc_tty_driver(1); - if (!serial_driver) - return -ENOMEM; - - IRQ_ports = NULL; - - show_serial_version(); - - /* Initialize the tty_driver structure */ - - serial_driver->owner = THIS_MODULE; - serial_driver->driver_name = "amiserial"; - serial_driver->name = "ttyS"; - serial_driver->major = TTY_MAJOR; - serial_driver->minor_start = 64; - serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - serial_driver->subtype = SERIAL_TYPE_NORMAL; - serial_driver->init_termios = tty_std_termios; - serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - serial_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(serial_driver, &serial_ops); - - error = tty_register_driver(serial_driver); - if (error) - goto fail_put_tty_driver; - - state = rs_table; - state->magic = SSTATE_MAGIC; - state->port = (int)&custom.serdatr; /* Just to give it a value */ - state->line = 0; - state->custom_divisor = 0; - state->close_delay = 5*HZ/10; - state->closing_wait = 30*HZ; - state->icount.cts = state->icount.dsr = - state->icount.rng = state->icount.dcd = 0; - state->icount.rx = state->icount.tx = 0; - state->icount.frame = state->icount.parity = 0; - state->icount.overrun = state->icount.brk = 0; - - printk(KERN_INFO "ttyS%d is the amiga builtin serial port\n", - state->line); - - /* Hardware set up */ - - state->baud_base = amiga_colorclock; - state->xmit_fifo_size = 1; - - /* set ISRs, and then disable the rx interrupts */ - error = request_irq(IRQ_AMIGA_TBE, ser_tx_int, 0, "serial TX", state); - if (error) - goto fail_unregister; - - error = request_irq(IRQ_AMIGA_RBF, ser_rx_int, IRQF_DISABLED, - "serial RX", state); - if (error) - goto fail_free_irq; - - local_irq_save(flags); - - /* turn off Rx and Tx interrupts */ - custom.intena = IF_RBF | IF_TBE; - mb(); - - /* clear any pending interrupt */ - custom.intreq = IF_RBF | IF_TBE; - mb(); - - local_irq_restore(flags); - - /* - * set the appropriate directions for the modem control flags, - * and clear RTS and DTR - */ - ciab.ddra |= (SER_DTR | SER_RTS); /* outputs */ - ciab.ddra &= ~(SER_DCD | SER_CTS | SER_DSR); /* inputs */ - - platform_set_drvdata(pdev, state); - - return 0; - -fail_free_irq: - free_irq(IRQ_AMIGA_TBE, state); -fail_unregister: - tty_unregister_driver(serial_driver); -fail_put_tty_driver: - put_tty_driver(serial_driver); - return error; -} - -static int __exit amiga_serial_remove(struct platform_device *pdev) -{ - int error; - struct serial_state *state = platform_get_drvdata(pdev); - struct async_struct *info = state->info; - - /* printk("Unloading %s: version %s\n", serial_name, serial_version); */ - tasklet_kill(&info->tlet); - if ((error = tty_unregister_driver(serial_driver))) - printk("SERIAL: failed to unregister serial driver (%d)\n", - error); - put_tty_driver(serial_driver); - - rs_table[0].info = NULL; - kfree(info); - - free_irq(IRQ_AMIGA_TBE, rs_table); - free_irq(IRQ_AMIGA_RBF, rs_table); - - platform_set_drvdata(pdev, NULL); - - return error; -} - -static struct platform_driver amiga_serial_driver = { - .remove = __exit_p(amiga_serial_remove), - .driver = { - .name = "amiga-serial", - .owner = THIS_MODULE, - }, -}; - -static int __init amiga_serial_init(void) -{ - return platform_driver_probe(&amiga_serial_driver, amiga_serial_probe); -} - -module_init(amiga_serial_init); - -static void __exit amiga_serial_exit(void) -{ - platform_driver_unregister(&amiga_serial_driver); -} - -module_exit(amiga_serial_exit); - - -#if defined(CONFIG_SERIAL_CONSOLE) && !defined(MODULE) - -/* - * ------------------------------------------------------------ - * Serial console driver - * ------------------------------------------------------------ - */ - -static void amiga_serial_putc(char c) -{ - custom.serdat = (unsigned char)c | 0x100; - while (!(custom.serdatr & 0x2000)) - barrier(); -} - -/* - * Print a string to the serial port trying not to disturb - * any possible real use of the port... - * - * The console must be locked when we get here. - */ -static void serial_console_write(struct console *co, const char *s, - unsigned count) -{ - unsigned short intena = custom.intenar; - - custom.intena = IF_TBE; - - while (count--) { - if (*s == '\n') - amiga_serial_putc('\r'); - amiga_serial_putc(*s++); - } - - custom.intena = IF_SETCLR | (intena & IF_TBE); -} - -static struct tty_driver *serial_console_device(struct console *c, int *index) -{ - *index = 0; - return serial_driver; -} - -static struct console sercons = { - .name = "ttyS", - .write = serial_console_write, - .device = serial_console_device, - .flags = CON_PRINTBUFFER, - .index = -1, -}; - -/* - * Register console. - */ -static int __init amiserial_console_init(void) -{ - register_console(&sercons); - return 0; -} -console_initcall(amiserial_console_init); - -#endif /* CONFIG_SERIAL_CONSOLE && !MODULE */ - -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:amiga-serial"); diff --git a/drivers/char/bfin_jtag_comm.c b/drivers/char/bfin_jtag_comm.c deleted file mode 100644 index 16402445f2b2..000000000000 --- a/drivers/char/bfin_jtag_comm.c +++ /dev/null @@ -1,366 +0,0 @@ -/* - * TTY over Blackfin JTAG Communication - * - * Copyright 2008-2009 Analog Devices Inc. - * - * Enter bugs at http://blackfin.uclinux.org/ - * - * Licensed under the GPL-2 or later. - */ - -#define DRV_NAME "bfin-jtag-comm" -#define DEV_NAME "ttyBFJC" -#define pr_fmt(fmt) DRV_NAME ": " fmt - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define pr_init(fmt, args...) ({ static const __initconst char __fmt[] = fmt; printk(__fmt, ## args); }) - -/* See the Debug/Emulation chapter in the HRM */ -#define EMUDOF 0x00000001 /* EMUDAT_OUT full & valid */ -#define EMUDIF 0x00000002 /* EMUDAT_IN full & valid */ -#define EMUDOOVF 0x00000004 /* EMUDAT_OUT overflow */ -#define EMUDIOVF 0x00000008 /* EMUDAT_IN overflow */ - -static inline uint32_t bfin_write_emudat(uint32_t emudat) -{ - __asm__ __volatile__("emudat = %0;" : : "d"(emudat)); - return emudat; -} - -static inline uint32_t bfin_read_emudat(void) -{ - uint32_t emudat; - __asm__ __volatile__("%0 = emudat;" : "=d"(emudat)); - return emudat; -} - -static inline uint32_t bfin_write_emudat_chars(char a, char b, char c, char d) -{ - return bfin_write_emudat((a << 0) | (b << 8) | (c << 16) | (d << 24)); -} - -#define CIRC_SIZE 2048 /* see comment in tty_io.c:do_tty_write() */ -#define CIRC_MASK (CIRC_SIZE - 1) -#define circ_empty(circ) ((circ)->head == (circ)->tail) -#define circ_free(circ) CIRC_SPACE((circ)->head, (circ)->tail, CIRC_SIZE) -#define circ_cnt(circ) CIRC_CNT((circ)->head, (circ)->tail, CIRC_SIZE) -#define circ_byte(circ, idx) ((circ)->buf[(idx) & CIRC_MASK]) - -static struct tty_driver *bfin_jc_driver; -static struct task_struct *bfin_jc_kthread; -static struct tty_struct * volatile bfin_jc_tty; -static unsigned long bfin_jc_count; -static DEFINE_MUTEX(bfin_jc_tty_mutex); -static volatile struct circ_buf bfin_jc_write_buf; - -static int -bfin_jc_emudat_manager(void *arg) -{ - uint32_t inbound_len = 0, outbound_len = 0; - - while (!kthread_should_stop()) { - /* no one left to give data to, so sleep */ - if (bfin_jc_tty == NULL && circ_empty(&bfin_jc_write_buf)) { - pr_debug("waiting for readers\n"); - __set_current_state(TASK_UNINTERRUPTIBLE); - schedule(); - __set_current_state(TASK_RUNNING); - } - - /* no data available, so just chill */ - if (!(bfin_read_DBGSTAT() & EMUDIF) && circ_empty(&bfin_jc_write_buf)) { - pr_debug("waiting for data (in_len = %i) (circ: %i %i)\n", - inbound_len, bfin_jc_write_buf.tail, bfin_jc_write_buf.head); - if (inbound_len) - schedule(); - else - schedule_timeout_interruptible(HZ); - continue; - } - - /* if incoming data is ready, eat it */ - if (bfin_read_DBGSTAT() & EMUDIF) { - struct tty_struct *tty; - mutex_lock(&bfin_jc_tty_mutex); - tty = (struct tty_struct *)bfin_jc_tty; - if (tty != NULL) { - uint32_t emudat = bfin_read_emudat(); - if (inbound_len == 0) { - pr_debug("incoming length: 0x%08x\n", emudat); - inbound_len = emudat; - } else { - size_t num_chars = (4 <= inbound_len ? 4 : inbound_len); - pr_debug(" incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars); - inbound_len -= num_chars; - tty_insert_flip_string(tty, (unsigned char *)&emudat, num_chars); - tty_flip_buffer_push(tty); - } - } - mutex_unlock(&bfin_jc_tty_mutex); - } - - /* if outgoing data is ready, post it */ - if (!(bfin_read_DBGSTAT() & EMUDOF) && !circ_empty(&bfin_jc_write_buf)) { - if (outbound_len == 0) { - outbound_len = circ_cnt(&bfin_jc_write_buf); - bfin_write_emudat(outbound_len); - pr_debug("outgoing length: 0x%08x\n", outbound_len); - } else { - struct tty_struct *tty; - int tail = bfin_jc_write_buf.tail; - size_t ate = (4 <= outbound_len ? 4 : outbound_len); - uint32_t emudat = - bfin_write_emudat_chars( - circ_byte(&bfin_jc_write_buf, tail + 0), - circ_byte(&bfin_jc_write_buf, tail + 1), - circ_byte(&bfin_jc_write_buf, tail + 2), - circ_byte(&bfin_jc_write_buf, tail + 3) - ); - bfin_jc_write_buf.tail += ate; - outbound_len -= ate; - mutex_lock(&bfin_jc_tty_mutex); - tty = (struct tty_struct *)bfin_jc_tty; - if (tty) - tty_wakeup(tty); - mutex_unlock(&bfin_jc_tty_mutex); - pr_debug(" outgoing data: 0x%08x (pushing %zu)\n", emudat, ate); - } - } - } - - __set_current_state(TASK_RUNNING); - return 0; -} - -static int -bfin_jc_open(struct tty_struct *tty, struct file *filp) -{ - mutex_lock(&bfin_jc_tty_mutex); - pr_debug("open %lu\n", bfin_jc_count); - ++bfin_jc_count; - bfin_jc_tty = tty; - wake_up_process(bfin_jc_kthread); - mutex_unlock(&bfin_jc_tty_mutex); - return 0; -} - -static void -bfin_jc_close(struct tty_struct *tty, struct file *filp) -{ - mutex_lock(&bfin_jc_tty_mutex); - pr_debug("close %lu\n", bfin_jc_count); - if (--bfin_jc_count == 0) - bfin_jc_tty = NULL; - wake_up_process(bfin_jc_kthread); - mutex_unlock(&bfin_jc_tty_mutex); -} - -/* XXX: we dont handle the put_char() case where we must handle count = 1 */ -static int -bfin_jc_circ_write(const unsigned char *buf, int count) -{ - int i; - count = min(count, circ_free(&bfin_jc_write_buf)); - pr_debug("going to write chunk of %i bytes\n", count); - for (i = 0; i < count; ++i) - circ_byte(&bfin_jc_write_buf, bfin_jc_write_buf.head + i) = buf[i]; - bfin_jc_write_buf.head += i; - return i; -} - -#ifndef CONFIG_BFIN_JTAG_COMM_CONSOLE -# define console_lock() -# define console_unlock() -#endif -static int -bfin_jc_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - int i; - console_lock(); - i = bfin_jc_circ_write(buf, count); - console_unlock(); - wake_up_process(bfin_jc_kthread); - return i; -} - -static void -bfin_jc_flush_chars(struct tty_struct *tty) -{ - wake_up_process(bfin_jc_kthread); -} - -static int -bfin_jc_write_room(struct tty_struct *tty) -{ - return circ_free(&bfin_jc_write_buf); -} - -static int -bfin_jc_chars_in_buffer(struct tty_struct *tty) -{ - return circ_cnt(&bfin_jc_write_buf); -} - -static void -bfin_jc_wait_until_sent(struct tty_struct *tty, int timeout) -{ - unsigned long expire = jiffies + timeout; - while (!circ_empty(&bfin_jc_write_buf)) { - if (signal_pending(current)) - break; - if (time_after(jiffies, expire)) - break; - } -} - -static const struct tty_operations bfin_jc_ops = { - .open = bfin_jc_open, - .close = bfin_jc_close, - .write = bfin_jc_write, - /*.put_char = bfin_jc_put_char,*/ - .flush_chars = bfin_jc_flush_chars, - .write_room = bfin_jc_write_room, - .chars_in_buffer = bfin_jc_chars_in_buffer, - .wait_until_sent = bfin_jc_wait_until_sent, -}; - -static int __init bfin_jc_init(void) -{ - int ret; - - bfin_jc_kthread = kthread_create(bfin_jc_emudat_manager, NULL, DRV_NAME); - if (IS_ERR(bfin_jc_kthread)) - return PTR_ERR(bfin_jc_kthread); - - ret = -ENOMEM; - - bfin_jc_write_buf.head = bfin_jc_write_buf.tail = 0; - bfin_jc_write_buf.buf = kmalloc(CIRC_SIZE, GFP_KERNEL); - if (!bfin_jc_write_buf.buf) - goto err; - - bfin_jc_driver = alloc_tty_driver(1); - if (!bfin_jc_driver) - goto err; - - bfin_jc_driver->owner = THIS_MODULE; - bfin_jc_driver->driver_name = DRV_NAME; - bfin_jc_driver->name = DEV_NAME; - bfin_jc_driver->type = TTY_DRIVER_TYPE_SERIAL; - bfin_jc_driver->subtype = SERIAL_TYPE_NORMAL; - bfin_jc_driver->init_termios = tty_std_termios; - tty_set_operations(bfin_jc_driver, &bfin_jc_ops); - - ret = tty_register_driver(bfin_jc_driver); - if (ret) - goto err; - - pr_init(KERN_INFO DRV_NAME ": initialized\n"); - - return 0; - - err: - put_tty_driver(bfin_jc_driver); - kfree(bfin_jc_write_buf.buf); - kthread_stop(bfin_jc_kthread); - return ret; -} -module_init(bfin_jc_init); - -static void __exit bfin_jc_exit(void) -{ - kthread_stop(bfin_jc_kthread); - kfree(bfin_jc_write_buf.buf); - tty_unregister_driver(bfin_jc_driver); - put_tty_driver(bfin_jc_driver); -} -module_exit(bfin_jc_exit); - -#if defined(CONFIG_BFIN_JTAG_COMM_CONSOLE) || defined(CONFIG_EARLY_PRINTK) -static void -bfin_jc_straight_buffer_write(const char *buf, unsigned count) -{ - unsigned ate = 0; - while (bfin_read_DBGSTAT() & EMUDOF) - continue; - bfin_write_emudat(count); - while (ate < count) { - while (bfin_read_DBGSTAT() & EMUDOF) - continue; - bfin_write_emudat_chars(buf[ate], buf[ate+1], buf[ate+2], buf[ate+3]); - ate += 4; - } -} -#endif - -#ifdef CONFIG_BFIN_JTAG_COMM_CONSOLE -static void -bfin_jc_console_write(struct console *co, const char *buf, unsigned count) -{ - if (bfin_jc_kthread == NULL) - bfin_jc_straight_buffer_write(buf, count); - else - bfin_jc_circ_write(buf, count); -} - -static struct tty_driver * -bfin_jc_console_device(struct console *co, int *index) -{ - *index = co->index; - return bfin_jc_driver; -} - -static struct console bfin_jc_console = { - .name = DEV_NAME, - .write = bfin_jc_console_write, - .device = bfin_jc_console_device, - .flags = CON_ANYTIME | CON_PRINTBUFFER, - .index = -1, -}; - -static int __init bfin_jc_console_init(void) -{ - register_console(&bfin_jc_console); - return 0; -} -console_initcall(bfin_jc_console_init); -#endif - -#ifdef CONFIG_EARLY_PRINTK -static void __init -bfin_jc_early_write(struct console *co, const char *buf, unsigned int count) -{ - bfin_jc_straight_buffer_write(buf, count); -} - -static struct __initdata console bfin_jc_early_console = { - .name = "early_BFJC", - .write = bfin_jc_early_write, - .flags = CON_ANYTIME | CON_PRINTBUFFER, - .index = -1, -}; - -struct console * __init -bfin_jc_early_init(unsigned int port, unsigned int cflag) -{ - return &bfin_jc_early_console; -} -#endif - -MODULE_AUTHOR("Mike Frysinger "); -MODULE_DESCRIPTION("TTY over Blackfin JTAG Communication"); -MODULE_LICENSE("GPL"); diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c deleted file mode 100644 index c99728f0cd9f..000000000000 --- a/drivers/char/cyclades.c +++ /dev/null @@ -1,4200 +0,0 @@ -#undef BLOCKMOVE -#define Z_WAKE -#undef Z_EXT_CHARS_IN_BUFFER - -/* - * linux/drivers/char/cyclades.c - * - * This file contains the driver for the Cyclades async multiport - * serial boards. - * - * Initially written by Randolph Bentson . - * Modified and maintained by Marcio Saito . - * - * Copyright (C) 2007-2009 Jiri Slaby - * - * Much of the design and some of the code came from serial.c - * which was copyright (C) 1991, 1992 Linus Torvalds. It was - * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, - * and then fixed as suggested by Michael K. Johnson 12/12/92. - * Converted to pci probing and cleaned up by Jiri Slaby. - * - */ - -#define CY_VERSION "2.6" - -/* If you need to install more boards than NR_CARDS, change the constant - in the definition below. No other change is necessary to support up to - eight boards. Beyond that you'll have to extend cy_isa_addresses. */ - -#define NR_CARDS 4 - -/* - If the total number of ports is larger than NR_PORTS, change this - constant in the definition below. No other change is necessary to - support more boards/ports. */ - -#define NR_PORTS 256 - -#define ZO_V1 0 -#define ZO_V2 1 -#define ZE_V1 2 - -#define SERIAL_PARANOIA_CHECK -#undef CY_DEBUG_OPEN -#undef CY_DEBUG_THROTTLE -#undef CY_DEBUG_OTHER -#undef CY_DEBUG_IO -#undef CY_DEBUG_COUNT -#undef CY_DEBUG_DTR -#undef CY_DEBUG_WAIT_UNTIL_SENT -#undef CY_DEBUG_INTERRUPTS -#undef CY_16Y_HACK -#undef CY_ENABLE_MONITORING -#undef CY_PCI_DEBUG - -/* - * Include section - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include -#include - -#include -#include -#include - -static void cy_send_xchar(struct tty_struct *tty, char ch); - -#ifndef SERIAL_XMIT_SIZE -#define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) -#endif - -#define STD_COM_FLAGS (0) - -/* firmware stuff */ -#define ZL_MAX_BLOCKS 16 -#define DRIVER_VERSION 0x02010203 -#define RAM_SIZE 0x80000 - -enum zblock_type { - ZBLOCK_PRG = 0, - ZBLOCK_FPGA = 1 -}; - -struct zfile_header { - char name[64]; - char date[32]; - char aux[32]; - u32 n_config; - u32 config_offset; - u32 n_blocks; - u32 block_offset; - u32 reserved[9]; -} __attribute__ ((packed)); - -struct zfile_config { - char name[64]; - u32 mailbox; - u32 function; - u32 n_blocks; - u32 block_list[ZL_MAX_BLOCKS]; -} __attribute__ ((packed)); - -struct zfile_block { - u32 type; - u32 file_offset; - u32 ram_offset; - u32 size; -} __attribute__ ((packed)); - -static struct tty_driver *cy_serial_driver; - -#ifdef CONFIG_ISA -/* This is the address lookup table. The driver will probe for - Cyclom-Y/ISA boards at all addresses in here. If you want the - driver to probe addresses at a different address, add it to - this table. If the driver is probing some other board and - causing problems, remove the offending address from this table. -*/ - -static unsigned int cy_isa_addresses[] = { - 0xD0000, - 0xD2000, - 0xD4000, - 0xD6000, - 0xD8000, - 0xDA000, - 0xDC000, - 0xDE000, - 0, 0, 0, 0, 0, 0, 0, 0 -}; - -#define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) - -static long maddr[NR_CARDS]; -static int irq[NR_CARDS]; - -module_param_array(maddr, long, NULL, 0); -module_param_array(irq, int, NULL, 0); - -#endif /* CONFIG_ISA */ - -/* This is the per-card data structure containing address, irq, number of - channels, etc. This driver supports a maximum of NR_CARDS cards. -*/ -static struct cyclades_card cy_card[NR_CARDS]; - -static int cy_next_channel; /* next minor available */ - -/* - * This is used to look up the divisor speeds and the timeouts - * We're normally limited to 15 distinct baud rates. The extra - * are accessed via settings in info->port.flags. - * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, - * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, - * HI VHI - * 20 - */ -static const int baud_table[] = { - 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, - 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, - 230400, 0 -}; - -static const char baud_co_25[] = { /* 25 MHz clock option table */ - /* value => 00 01 02 03 04 */ - /* divide by 8 32 128 512 2048 */ - 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, - 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; - -static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ - 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, - 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 -}; - -static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ - /* value => 00 01 02 03 04 */ - /* divide by 8 32 128 512 2048 */ - 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, - 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00 -}; - -static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ - 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, - 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, - 0x21 -}; - -static const char baud_cor3[] = { /* receive threshold */ - 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, - 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, - 0x07 -}; - -/* - * The Cyclades driver implements HW flow control as any serial driver. - * The cyclades_port structure member rflow and the vector rflow_thr - * allows us to take advantage of a special feature in the CD1400 to avoid - * data loss even when the system interrupt latency is too high. These flags - * are to be used only with very special applications. Setting these flags - * requires the use of a special cable (DTR and RTS reversed). In the new - * CD1400-based boards (rev. 6.00 or later), there is no need for special - * cables. - */ - -static const char rflow_thr[] = { /* rflow threshold */ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, - 0x0a -}; - -/* The Cyclom-Ye has placed the sequential chips in non-sequential - * address order. This look-up table overcomes that problem. - */ -static const unsigned int cy_chip_offset[] = { 0x0000, - 0x0400, - 0x0800, - 0x0C00, - 0x0200, - 0x0600, - 0x0A00, - 0x0E00 -}; - -/* PCI related definitions */ - -#ifdef CONFIG_PCI -static const struct pci_device_id cy_pci_dev_id[] = { - /* PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, - /* PCI > 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, - /* 4Y PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, - /* 4Y PCI > 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, - /* 8Y PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, - /* 8Y PCI > 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, - /* Z PCI < 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, - /* Z PCI > 1Mb */ - { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, - { } /* end of table */ -}; -MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); -#endif - -static void cy_start(struct tty_struct *); -static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); -static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); -#ifdef CONFIG_ISA -static unsigned detect_isa_irq(void __iomem *); -#endif /* CONFIG_ISA */ - -#ifndef CONFIG_CYZ_INTR -static void cyz_poll(unsigned long); - -/* The Cyclades-Z polling cycle is defined by this variable */ -static long cyz_polling_cycle = CZ_DEF_POLL; - -static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); - -#else /* CONFIG_CYZ_INTR */ -static void cyz_rx_restart(unsigned long); -static struct timer_list cyz_rx_full_timer[NR_PORTS]; -#endif /* CONFIG_CYZ_INTR */ - -static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) -{ - struct cyclades_card *card = port->card; - - cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); -} - -static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) -{ - struct cyclades_card *card = port->card; - - return readb(port->u.cyy.base_addr + (reg << card->bus_index)); -} - -static inline bool cy_is_Z(struct cyclades_card *card) -{ - return card->num_chips == (unsigned int)-1; -} - -static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) -{ - return readl(&ctl_addr->init_ctrl) & (1 << 17); -} - -static inline bool cyz_fpga_loaded(struct cyclades_card *card) -{ - return __cyz_fpga_loaded(card->ctl_addr.p9060); -} - -static inline bool cyz_is_loaded(struct cyclades_card *card) -{ - struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; - - return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && - readl(&fw_id->signature) == ZFIRM_ID; -} - -static inline int serial_paranoia_check(struct cyclades_port *info, - const char *name, const char *routine) -{ -#ifdef SERIAL_PARANOIA_CHECK - if (!info) { - printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " - "in %s\n", name, routine); - return 1; - } - - if (info->magic != CYCLADES_MAGIC) { - printk(KERN_WARNING "cyc Warning: bad magic number for serial " - "struct (%s) in %s\n", name, routine); - return 1; - } -#endif - return 0; -} - -/***********************************************************/ -/********* Start of block of Cyclom-Y specific code ********/ - -/* This routine waits up to 1000 micro-seconds for the previous - command to the Cirrus chip to complete and then issues the - new command. An error is returned if the previous command - didn't finish within the time limit. - - This function is only called from inside spinlock-protected code. - */ -static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) -{ - void __iomem *ccr = base_addr + (CyCCR << index); - unsigned int i; - - /* Check to see that the previous command has completed */ - for (i = 0; i < 100; i++) { - if (readb(ccr) == 0) - break; - udelay(10L); - } - /* if the CCR never cleared, the previous command - didn't finish within the "reasonable time" */ - if (i == 100) - return -1; - - /* Issue the new command */ - cy_writeb(ccr, cmd); - - return 0; -} - -static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) -{ - return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, - port->card->bus_index); -} - -#ifdef CONFIG_ISA -/* ISA interrupt detection code */ -static unsigned detect_isa_irq(void __iomem *address) -{ - int irq; - unsigned long irqs, flags; - int save_xir, save_car; - int index = 0; /* IRQ probing is only for ISA */ - - /* forget possible initially masked and pending IRQ */ - irq = probe_irq_off(probe_irq_on()); - - /* Clear interrupts on the board first */ - cy_writeb(address + (Cy_ClrIntr << index), 0); - /* Cy_ClrIntr is 0x1800 */ - - irqs = probe_irq_on(); - /* Wait ... */ - msleep(5); - - /* Enable the Tx interrupts on the CD1400 */ - local_irq_save(flags); - cy_writeb(address + (CyCAR << index), 0); - __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); - - cy_writeb(address + (CyCAR << index), 0); - cy_writeb(address + (CySRER << index), - readb(address + (CySRER << index)) | CyTxRdy); - local_irq_restore(flags); - - /* Wait ... */ - msleep(5); - - /* Check which interrupt is in use */ - irq = probe_irq_off(irqs); - - /* Clean up */ - save_xir = (u_char) readb(address + (CyTIR << index)); - save_car = readb(address + (CyCAR << index)); - cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); - cy_writeb(address + (CySRER << index), - readb(address + (CySRER << index)) & ~CyTxRdy); - cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); - cy_writeb(address + (CyCAR << index), (save_car)); - cy_writeb(address + (Cy_ClrIntr << index), 0); - /* Cy_ClrIntr is 0x1800 */ - - return (irq > 0) ? irq : 0; -} -#endif /* CONFIG_ISA */ - -static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, - void __iomem *base_addr) -{ - struct cyclades_port *info; - struct tty_struct *tty; - int len, index = cinfo->bus_index; - u8 ivr, save_xir, channel, save_car, data, char_count; - -#ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); -#endif - /* determine the channel & change to that context */ - save_xir = readb(base_addr + (CyRIR << index)); - channel = save_xir & CyIRChannel; - info = &cinfo->ports[channel + chip * 4]; - save_car = cyy_readb(info, CyCAR); - cyy_writeb(info, CyCAR, save_xir); - ivr = cyy_readb(info, CyRIVR) & CyIVRMask; - - tty = tty_port_tty_get(&info->port); - /* if there is nowhere to put the data, discard it */ - if (tty == NULL) { - if (ivr == CyIVRRxEx) { /* exception */ - data = cyy_readb(info, CyRDSR); - } else { /* normal character reception */ - char_count = cyy_readb(info, CyRDCR); - while (char_count--) - data = cyy_readb(info, CyRDSR); - } - goto end; - } - /* there is an open port for this data */ - if (ivr == CyIVRRxEx) { /* exception */ - data = cyy_readb(info, CyRDSR); - - /* For statistics only */ - if (data & CyBREAK) - info->icount.brk++; - else if (data & CyFRAME) - info->icount.frame++; - else if (data & CyPARITY) - info->icount.parity++; - else if (data & CyOVERRUN) - info->icount.overrun++; - - if (data & info->ignore_status_mask) { - info->icount.rx++; - tty_kref_put(tty); - return; - } - if (tty_buffer_request_room(tty, 1)) { - if (data & info->read_status_mask) { - if (data & CyBREAK) { - tty_insert_flip_char(tty, - cyy_readb(info, CyRDSR), - TTY_BREAK); - info->icount.rx++; - if (info->port.flags & ASYNC_SAK) - do_SAK(tty); - } else if (data & CyFRAME) { - tty_insert_flip_char(tty, - cyy_readb(info, CyRDSR), - TTY_FRAME); - info->icount.rx++; - info->idle_stats.frame_errs++; - } else if (data & CyPARITY) { - /* Pieces of seven... */ - tty_insert_flip_char(tty, - cyy_readb(info, CyRDSR), - TTY_PARITY); - info->icount.rx++; - info->idle_stats.parity_errs++; - } else if (data & CyOVERRUN) { - tty_insert_flip_char(tty, 0, - TTY_OVERRUN); - info->icount.rx++; - /* If the flip buffer itself is - overflowing, we still lose - the next incoming character. - */ - tty_insert_flip_char(tty, - cyy_readb(info, CyRDSR), - TTY_FRAME); - info->icount.rx++; - info->idle_stats.overruns++; - /* These two conditions may imply */ - /* a normal read should be done. */ - /* } else if(data & CyTIMEOUT) { */ - /* } else if(data & CySPECHAR) { */ - } else { - tty_insert_flip_char(tty, 0, - TTY_NORMAL); - info->icount.rx++; - } - } else { - tty_insert_flip_char(tty, 0, TTY_NORMAL); - info->icount.rx++; - } - } else { - /* there was a software buffer overrun and nothing - * could be done about it!!! */ - info->icount.buf_overrun++; - info->idle_stats.overruns++; - } - } else { /* normal character reception */ - /* load # chars available from the chip */ - char_count = cyy_readb(info, CyRDCR); - -#ifdef CY_ENABLE_MONITORING - ++info->mon.int_count; - info->mon.char_count += char_count; - if (char_count > info->mon.char_max) - info->mon.char_max = char_count; - info->mon.char_last = char_count; -#endif - len = tty_buffer_request_room(tty, char_count); - while (len--) { - data = cyy_readb(info, CyRDSR); - tty_insert_flip_char(tty, data, TTY_NORMAL); - info->idle_stats.recv_bytes++; - info->icount.rx++; -#ifdef CY_16Y_HACK - udelay(10L); -#endif - } - info->idle_stats.recv_idle = jiffies; - } - tty_schedule_flip(tty); - tty_kref_put(tty); -end: - /* end of service */ - cyy_writeb(info, CyRIR, save_xir & 0x3f); - cyy_writeb(info, CyCAR, save_car); -} - -static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, - void __iomem *base_addr) -{ - struct cyclades_port *info; - struct tty_struct *tty; - int char_count, index = cinfo->bus_index; - u8 save_xir, channel, save_car, outch; - - /* Since we only get here when the transmit buffer - is empty, we know we can always stuff a dozen - characters. */ -#ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); -#endif - - /* determine the channel & change to that context */ - save_xir = readb(base_addr + (CyTIR << index)); - channel = save_xir & CyIRChannel; - save_car = readb(base_addr + (CyCAR << index)); - cy_writeb(base_addr + (CyCAR << index), save_xir); - - info = &cinfo->ports[channel + chip * 4]; - tty = tty_port_tty_get(&info->port); - if (tty == NULL) { - cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); - goto end; - } - - /* load the on-chip space for outbound data */ - char_count = info->xmit_fifo_size; - - if (info->x_char) { /* send special char */ - outch = info->x_char; - cyy_writeb(info, CyTDR, outch); - char_count--; - info->icount.tx++; - info->x_char = 0; - } - - if (info->breakon || info->breakoff) { - if (info->breakon) { - cyy_writeb(info, CyTDR, 0); - cyy_writeb(info, CyTDR, 0x81); - info->breakon = 0; - char_count -= 2; - } - if (info->breakoff) { - cyy_writeb(info, CyTDR, 0); - cyy_writeb(info, CyTDR, 0x83); - info->breakoff = 0; - char_count -= 2; - } - } - - while (char_count-- > 0) { - if (!info->xmit_cnt) { - if (cyy_readb(info, CySRER) & CyTxMpty) { - cyy_writeb(info, CySRER, - cyy_readb(info, CySRER) & ~CyTxMpty); - } else { - cyy_writeb(info, CySRER, CyTxMpty | - (cyy_readb(info, CySRER) & ~CyTxRdy)); - } - goto done; - } - if (info->port.xmit_buf == NULL) { - cyy_writeb(info, CySRER, - cyy_readb(info, CySRER) & ~CyTxRdy); - goto done; - } - if (tty->stopped || tty->hw_stopped) { - cyy_writeb(info, CySRER, - cyy_readb(info, CySRER) & ~CyTxRdy); - goto done; - } - /* Because the Embedded Transmit Commands have been enabled, - * we must check to see if the escape character, NULL, is being - * sent. If it is, we must ensure that there is room for it to - * be doubled in the output stream. Therefore we no longer - * advance the pointer when the character is fetched, but - * rather wait until after the check for a NULL output - * character. This is necessary because there may not be room - * for the two chars needed to send a NULL.) - */ - outch = info->port.xmit_buf[info->xmit_tail]; - if (outch) { - info->xmit_cnt--; - info->xmit_tail = (info->xmit_tail + 1) & - (SERIAL_XMIT_SIZE - 1); - cyy_writeb(info, CyTDR, outch); - info->icount.tx++; - } else { - if (char_count > 1) { - info->xmit_cnt--; - info->xmit_tail = (info->xmit_tail + 1) & - (SERIAL_XMIT_SIZE - 1); - cyy_writeb(info, CyTDR, outch); - cyy_writeb(info, CyTDR, 0); - info->icount.tx++; - char_count--; - } - } - } - -done: - tty_wakeup(tty); - tty_kref_put(tty); -end: - /* end of service */ - cyy_writeb(info, CyTIR, save_xir & 0x3f); - cyy_writeb(info, CyCAR, save_car); -} - -static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, - void __iomem *base_addr) -{ - struct cyclades_port *info; - struct tty_struct *tty; - int index = cinfo->bus_index; - u8 save_xir, channel, save_car, mdm_change, mdm_status; - - /* determine the channel & change to that context */ - save_xir = readb(base_addr + (CyMIR << index)); - channel = save_xir & CyIRChannel; - info = &cinfo->ports[channel + chip * 4]; - save_car = cyy_readb(info, CyCAR); - cyy_writeb(info, CyCAR, save_xir); - - mdm_change = cyy_readb(info, CyMISR); - mdm_status = cyy_readb(info, CyMSVR1); - - tty = tty_port_tty_get(&info->port); - if (!tty) - goto end; - - if (mdm_change & CyANY_DELTA) { - /* For statistics only */ - if (mdm_change & CyDCD) - info->icount.dcd++; - if (mdm_change & CyCTS) - info->icount.cts++; - if (mdm_change & CyDSR) - info->icount.dsr++; - if (mdm_change & CyRI) - info->icount.rng++; - - wake_up_interruptible(&info->port.delta_msr_wait); - } - - if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { - if (mdm_status & CyDCD) - wake_up_interruptible(&info->port.open_wait); - else - tty_hangup(tty); - } - if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { - if (tty->hw_stopped) { - if (mdm_status & CyCTS) { - /* cy_start isn't used - because... !!! */ - tty->hw_stopped = 0; - cyy_writeb(info, CySRER, - cyy_readb(info, CySRER) | CyTxRdy); - tty_wakeup(tty); - } - } else { - if (!(mdm_status & CyCTS)) { - /* cy_stop isn't used - because ... !!! */ - tty->hw_stopped = 1; - cyy_writeb(info, CySRER, - cyy_readb(info, CySRER) & ~CyTxRdy); - } - } - } -/* if (mdm_change & CyDSR) { - } - if (mdm_change & CyRI) { - }*/ - tty_kref_put(tty); -end: - /* end of service */ - cyy_writeb(info, CyMIR, save_xir & 0x3f); - cyy_writeb(info, CyCAR, save_car); -} - -/* The real interrupt service routine is called - whenever the card wants its hand held--chars - received, out buffer empty, modem change, etc. - */ -static irqreturn_t cyy_interrupt(int irq, void *dev_id) -{ - int status; - struct cyclades_card *cinfo = dev_id; - void __iomem *base_addr, *card_base_addr; - unsigned int chip, too_many, had_work; - int index; - - if (unlikely(cinfo == NULL)) { -#ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", - irq); -#endif - return IRQ_NONE; /* spurious interrupt */ - } - - card_base_addr = cinfo->base_addr; - index = cinfo->bus_index; - - /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ - if (unlikely(card_base_addr == NULL)) - return IRQ_HANDLED; - - /* This loop checks all chips in the card. Make a note whenever - _any_ chip had some work to do, as this is considered an - indication that there will be more to do. Only when no chip - has any work does this outermost loop exit. - */ - do { - had_work = 0; - for (chip = 0; chip < cinfo->num_chips; chip++) { - base_addr = cinfo->base_addr + - (cy_chip_offset[chip] << index); - too_many = 0; - while ((status = readb(base_addr + - (CySVRR << index))) != 0x00) { - had_work++; - /* The purpose of the following test is to ensure that - no chip can monopolize the driver. This forces the - chips to be checked in a round-robin fashion (after - draining each of a bunch (1000) of characters). - */ - if (1000 < too_many++) - break; - spin_lock(&cinfo->card_lock); - if (status & CySRReceive) /* rx intr */ - cyy_chip_rx(cinfo, chip, base_addr); - if (status & CySRTransmit) /* tx intr */ - cyy_chip_tx(cinfo, chip, base_addr); - if (status & CySRModem) /* modem intr */ - cyy_chip_modem(cinfo, chip, base_addr); - spin_unlock(&cinfo->card_lock); - } - } - } while (had_work); - - /* clear interrupts */ - spin_lock(&cinfo->card_lock); - cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); - /* Cy_ClrIntr is 0x1800 */ - spin_unlock(&cinfo->card_lock); - return IRQ_HANDLED; -} /* cyy_interrupt */ - -static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, - unsigned int clear) -{ - struct cyclades_card *card = info->card; - int channel = info->line - card->first_line; - u32 rts, dtr, msvrr, msvrd; - - channel &= 0x03; - - if (info->rtsdtr_inv) { - msvrr = CyMSVR2; - msvrd = CyMSVR1; - rts = CyDTR; - dtr = CyRTS; - } else { - msvrr = CyMSVR1; - msvrd = CyMSVR2; - rts = CyRTS; - dtr = CyDTR; - } - if (set & TIOCM_RTS) { - cyy_writeb(info, CyCAR, channel); - cyy_writeb(info, msvrr, rts); - } - if (clear & TIOCM_RTS) { - cyy_writeb(info, CyCAR, channel); - cyy_writeb(info, msvrr, ~rts); - } - if (set & TIOCM_DTR) { - cyy_writeb(info, CyCAR, channel); - cyy_writeb(info, msvrd, dtr); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - cyy_readb(info, CyMSVR1), - cyy_readb(info, CyMSVR2)); -#endif - } - if (clear & TIOCM_DTR) { - cyy_writeb(info, CyCAR, channel); - cyy_writeb(info, msvrd, ~dtr); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); - printk(KERN_DEBUG " status: 0x%x, 0x%x\n", - cyy_readb(info, CyMSVR1), - cyy_readb(info, CyMSVR2)); -#endif - } -} - -/***********************************************************/ -/********* End of block of Cyclom-Y specific code **********/ -/******** Start of block of Cyclades-Z specific code *******/ -/***********************************************************/ - -static int -cyz_fetch_msg(struct cyclades_card *cinfo, - __u32 *channel, __u8 *cmd, __u32 *param) -{ - struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; - unsigned long loc_doorbell; - - loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); - if (loc_doorbell) { - *cmd = (char)(0xff & loc_doorbell); - *channel = readl(&board_ctrl->fwcmd_channel); - *param = (__u32) readl(&board_ctrl->fwcmd_param); - cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); - return 1; - } - return 0; -} /* cyz_fetch_msg */ - -static int -cyz_issue_cmd(struct cyclades_card *cinfo, - __u32 channel, __u8 cmd, __u32 param) -{ - struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; - __u32 __iomem *pci_doorbell; - unsigned int index; - - if (!cyz_is_loaded(cinfo)) - return -1; - - index = 0; - pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; - while ((readl(pci_doorbell) & 0xff) != 0) { - if (index++ == 1000) - return (int)(readl(pci_doorbell) & 0xff); - udelay(50L); - } - cy_writel(&board_ctrl->hcmd_channel, channel); - cy_writel(&board_ctrl->hcmd_param, param); - cy_writel(pci_doorbell, (long)cmd); - - return 0; -} /* cyz_issue_cmd */ - -static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) -{ - struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; - struct cyclades_card *cinfo = info->card; - unsigned int char_count; - int len; -#ifdef BLOCKMOVE - unsigned char *buf; -#else - char data; -#endif - __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; - - rx_get = new_rx_get = readl(&buf_ctrl->rx_get); - rx_put = readl(&buf_ctrl->rx_put); - rx_bufsize = readl(&buf_ctrl->rx_bufsize); - rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); - if (rx_put >= rx_get) - char_count = rx_put - rx_get; - else - char_count = rx_put - rx_get + rx_bufsize; - - if (char_count) { -#ifdef CY_ENABLE_MONITORING - info->mon.int_count++; - info->mon.char_count += char_count; - if (char_count > info->mon.char_max) - info->mon.char_max = char_count; - info->mon.char_last = char_count; -#endif - if (tty == NULL) { - /* flush received characters */ - new_rx_get = (new_rx_get + char_count) & - (rx_bufsize - 1); - info->rflush_count++; - } else { -#ifdef BLOCKMOVE - /* we'd like to use memcpy(t, f, n) and memset(s, c, count) - for performance, but because of buffer boundaries, there - may be several steps to the operation */ - while (1) { - len = tty_prepare_flip_string(tty, &buf, - char_count); - if (!len) - break; - - len = min_t(unsigned int, min(len, char_count), - rx_bufsize - new_rx_get); - - memcpy_fromio(buf, cinfo->base_addr + - rx_bufaddr + new_rx_get, len); - - new_rx_get = (new_rx_get + len) & - (rx_bufsize - 1); - char_count -= len; - info->icount.rx += len; - info->idle_stats.recv_bytes += len; - } -#else - len = tty_buffer_request_room(tty, char_count); - while (len--) { - data = readb(cinfo->base_addr + rx_bufaddr + - new_rx_get); - new_rx_get = (new_rx_get + 1) & - (rx_bufsize - 1); - tty_insert_flip_char(tty, data, TTY_NORMAL); - info->idle_stats.recv_bytes++; - info->icount.rx++; - } -#endif -#ifdef CONFIG_CYZ_INTR - /* Recalculate the number of chars in the RX buffer and issue - a cmd in case it's higher than the RX high water mark */ - rx_put = readl(&buf_ctrl->rx_put); - if (rx_put >= rx_get) - char_count = rx_put - rx_get; - else - char_count = rx_put - rx_get + rx_bufsize; - if (char_count >= readl(&buf_ctrl->rx_threshold) && - !timer_pending(&cyz_rx_full_timer[ - info->line])) - mod_timer(&cyz_rx_full_timer[info->line], - jiffies + 1); -#endif - info->idle_stats.recv_idle = jiffies; - tty_schedule_flip(tty); - } - /* Update rx_get */ - cy_writel(&buf_ctrl->rx_get, new_rx_get); - } -} - -static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) -{ - struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; - struct cyclades_card *cinfo = info->card; - u8 data; - unsigned int char_count; -#ifdef BLOCKMOVE - int small_count; -#endif - __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; - - if (info->xmit_cnt <= 0) /* Nothing to transmit */ - return; - - tx_get = readl(&buf_ctrl->tx_get); - tx_put = readl(&buf_ctrl->tx_put); - tx_bufsize = readl(&buf_ctrl->tx_bufsize); - tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); - if (tx_put >= tx_get) - char_count = tx_get - tx_put - 1 + tx_bufsize; - else - char_count = tx_get - tx_put - 1; - - if (char_count) { - - if (tty == NULL) - goto ztxdone; - - if (info->x_char) { /* send special char */ - data = info->x_char; - - cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); - tx_put = (tx_put + 1) & (tx_bufsize - 1); - info->x_char = 0; - char_count--; - info->icount.tx++; - } -#ifdef BLOCKMOVE - while (0 < (small_count = min_t(unsigned int, - tx_bufsize - tx_put, min_t(unsigned int, - (SERIAL_XMIT_SIZE - info->xmit_tail), - min_t(unsigned int, info->xmit_cnt, - char_count))))) { - - memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + - tx_put), - &info->port.xmit_buf[info->xmit_tail], - small_count); - - tx_put = (tx_put + small_count) & (tx_bufsize - 1); - char_count -= small_count; - info->icount.tx += small_count; - info->xmit_cnt -= small_count; - info->xmit_tail = (info->xmit_tail + small_count) & - (SERIAL_XMIT_SIZE - 1); - } -#else - while (info->xmit_cnt && char_count) { - data = info->port.xmit_buf[info->xmit_tail]; - info->xmit_cnt--; - info->xmit_tail = (info->xmit_tail + 1) & - (SERIAL_XMIT_SIZE - 1); - - cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); - tx_put = (tx_put + 1) & (tx_bufsize - 1); - char_count--; - info->icount.tx++; - } -#endif - tty_wakeup(tty); -ztxdone: - /* Update tx_put */ - cy_writel(&buf_ctrl->tx_put, tx_put); - } -} - -static void cyz_handle_cmd(struct cyclades_card *cinfo) -{ - struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; - struct tty_struct *tty; - struct cyclades_port *info; - __u32 channel, param, fw_ver; - __u8 cmd; - int special_count; - int delta_count; - - fw_ver = readl(&board_ctrl->fw_version); - - while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { - special_count = 0; - delta_count = 0; - info = &cinfo->ports[channel]; - tty = tty_port_tty_get(&info->port); - if (tty == NULL) - continue; - - switch (cmd) { - case C_CM_PR_ERROR: - tty_insert_flip_char(tty, 0, TTY_PARITY); - info->icount.rx++; - special_count++; - break; - case C_CM_FR_ERROR: - tty_insert_flip_char(tty, 0, TTY_FRAME); - info->icount.rx++; - special_count++; - break; - case C_CM_RXBRK: - tty_insert_flip_char(tty, 0, TTY_BREAK); - info->icount.rx++; - special_count++; - break; - case C_CM_MDCD: - info->icount.dcd++; - delta_count++; - if (info->port.flags & ASYNC_CHECK_CD) { - u32 dcd = fw_ver > 241 ? param : - readl(&info->u.cyz.ch_ctrl->rs_status); - if (dcd & C_RS_DCD) - wake_up_interruptible(&info->port.open_wait); - else - tty_hangup(tty); - } - break; - case C_CM_MCTS: - info->icount.cts++; - delta_count++; - break; - case C_CM_MRI: - info->icount.rng++; - delta_count++; - break; - case C_CM_MDSR: - info->icount.dsr++; - delta_count++; - break; -#ifdef Z_WAKE - case C_CM_IOCTLW: - complete(&info->shutdown_wait); - break; -#endif -#ifdef CONFIG_CYZ_INTR - case C_CM_RXHIWM: - case C_CM_RXNNDT: - case C_CM_INTBACK2: - /* Reception Interrupt */ -#ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " - "port %ld\n", info->card, channel); -#endif - cyz_handle_rx(info, tty); - break; - case C_CM_TXBEMPTY: - case C_CM_TXLOWWM: - case C_CM_INTBACK: - /* Transmission Interrupt */ -#ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " - "port %ld\n", info->card, channel); -#endif - cyz_handle_tx(info, tty); - break; -#endif /* CONFIG_CYZ_INTR */ - case C_CM_FATAL: - /* should do something with this !!! */ - break; - default: - break; - } - if (delta_count) - wake_up_interruptible(&info->port.delta_msr_wait); - if (special_count) - tty_schedule_flip(tty); - tty_kref_put(tty); - } -} - -#ifdef CONFIG_CYZ_INTR -static irqreturn_t cyz_interrupt(int irq, void *dev_id) -{ - struct cyclades_card *cinfo = dev_id; - - if (unlikely(!cyz_is_loaded(cinfo))) { -#ifdef CY_DEBUG_INTERRUPTS - printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " - "(IRQ%d).\n", irq); -#endif - return IRQ_NONE; - } - - /* Handle the interrupts */ - cyz_handle_cmd(cinfo); - - return IRQ_HANDLED; -} /* cyz_interrupt */ - -static void cyz_rx_restart(unsigned long arg) -{ - struct cyclades_port *info = (struct cyclades_port *)arg; - struct cyclades_card *card = info->card; - int retval; - __u32 channel = info->line - card->first_line; - unsigned long flags; - - spin_lock_irqsave(&card->card_lock, flags); - retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", - info->line, retval); - } - spin_unlock_irqrestore(&card->card_lock, flags); -} - -#else /* CONFIG_CYZ_INTR */ - -static void cyz_poll(unsigned long arg) -{ - struct cyclades_card *cinfo; - struct cyclades_port *info; - unsigned long expires = jiffies + HZ; - unsigned int port, card; - - for (card = 0; card < NR_CARDS; card++) { - cinfo = &cy_card[card]; - - if (!cy_is_Z(cinfo)) - continue; - if (!cyz_is_loaded(cinfo)) - continue; - - /* Skip first polling cycle to avoid racing conditions with the FW */ - if (!cinfo->intr_enabled) { - cinfo->intr_enabled = 1; - continue; - } - - cyz_handle_cmd(cinfo); - - for (port = 0; port < cinfo->nports; port++) { - struct tty_struct *tty; - - info = &cinfo->ports[port]; - tty = tty_port_tty_get(&info->port); - /* OK to pass NULL to the handle functions below. - They need to drop the data in that case. */ - - if (!info->throttle) - cyz_handle_rx(info, tty); - cyz_handle_tx(info, tty); - tty_kref_put(tty); - } - /* poll every 'cyz_polling_cycle' period */ - expires = jiffies + cyz_polling_cycle; - } - mod_timer(&cyz_timerlist, expires); -} /* cyz_poll */ - -#endif /* CONFIG_CYZ_INTR */ - -/********** End of block of Cyclades-Z specific code *********/ -/***********************************************************/ - -/* This is called whenever a port becomes active; - interrupts are enabled and DTR & RTS are turned on. - */ -static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) -{ - struct cyclades_card *card; - unsigned long flags; - int retval = 0; - int channel; - unsigned long page; - - card = info->card; - channel = info->line - card->first_line; - - page = get_zeroed_page(GFP_KERNEL); - if (!page) - return -ENOMEM; - - spin_lock_irqsave(&card->card_lock, flags); - - if (info->port.flags & ASYNC_INITIALIZED) - goto errout; - - if (!info->type) { - set_bit(TTY_IO_ERROR, &tty->flags); - goto errout; - } - - if (info->port.xmit_buf) - free_page(page); - else - info->port.xmit_buf = (unsigned char *)page; - - spin_unlock_irqrestore(&card->card_lock, flags); - - cy_set_line_char(info, tty); - - if (!cy_is_Z(card)) { - channel &= 0x03; - - spin_lock_irqsave(&card->card_lock, flags); - - cyy_writeb(info, CyCAR, channel); - - cyy_writeb(info, CyRTPR, - (info->default_timeout ? info->default_timeout : 0x02)); - /* 10ms rx timeout */ - - cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); - - cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); - - cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); - } else { - struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; - - if (!cyz_is_loaded(card)) - return -ENODEV; - -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " - "base_addr %p\n", card, channel, card->base_addr); -#endif - spin_lock_irqsave(&card->card_lock, flags); - - cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); -#ifdef Z_WAKE -#ifdef CONFIG_CYZ_INTR - cy_writel(&ch_ctrl->intr_enable, - C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | - C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); -#else - cy_writel(&ch_ctrl->intr_enable, - C_IN_IOCTLW | C_IN_MDCD); -#endif /* CONFIG_CYZ_INTR */ -#else -#ifdef CONFIG_CYZ_INTR - cy_writel(&ch_ctrl->intr_enable, - C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | - C_IN_RXNNDT | C_IN_MDCD); -#else - cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); -#endif /* CONFIG_CYZ_INTR */ -#endif /* Z_WAKE */ - - retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " - "%x\n", info->line, retval); - } - - /* Flush RX buffers before raising DTR and RTS */ - retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " - "%x\n", info->line, retval); - } - - /* set timeout !!! */ - /* set RTS and DTR !!! */ - tty_port_raise_dtr_rts(&info->port); - - /* enable send, recv, modem !!! */ - } - - info->port.flags |= ASYNC_INITIALIZED; - - clear_bit(TTY_IO_ERROR, &tty->flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - info->breakon = info->breakoff = 0; - memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); - info->idle_stats.in_use = - info->idle_stats.recv_idle = - info->idle_stats.xmit_idle = jiffies; - - spin_unlock_irqrestore(&card->card_lock, flags); - -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc startup done\n"); -#endif - return 0; - -errout: - spin_unlock_irqrestore(&card->card_lock, flags); - free_page(page); - return retval; -} /* startup */ - -static void start_xmit(struct cyclades_port *info) -{ - struct cyclades_card *card = info->card; - unsigned long flags; - int channel = info->line - card->first_line; - - if (!cy_is_Z(card)) { - spin_lock_irqsave(&card->card_lock, flags); - cyy_writeb(info, CyCAR, channel & 0x03); - cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); - spin_unlock_irqrestore(&card->card_lock, flags); - } else { -#ifdef CONFIG_CYZ_INTR - int retval; - - spin_lock_irqsave(&card->card_lock, flags); - retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " - "%x\n", info->line, retval); - } - spin_unlock_irqrestore(&card->card_lock, flags); -#else /* CONFIG_CYZ_INTR */ - /* Don't have to do anything at this time */ -#endif /* CONFIG_CYZ_INTR */ - } -} /* start_xmit */ - -/* - * This routine shuts down a serial port; interrupts are disabled, - * and DTR is dropped if the hangup on close termio flag is on. - */ -static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) -{ - struct cyclades_card *card; - unsigned long flags; - int channel; - - if (!(info->port.flags & ASYNC_INITIALIZED)) - return; - - card = info->card; - channel = info->line - card->first_line; - if (!cy_is_Z(card)) { - spin_lock_irqsave(&card->card_lock, flags); - - /* Clear delta_msr_wait queue to avoid mem leaks. */ - wake_up_interruptible(&info->port.delta_msr_wait); - - if (info->port.xmit_buf) { - unsigned char *temp; - temp = info->port.xmit_buf; - info->port.xmit_buf = NULL; - free_page((unsigned long)temp); - } - if (tty->termios->c_cflag & HUPCL) - cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); - - cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); - /* it may be appropriate to clear _XMIT at - some later date (after testing)!!! */ - - set_bit(TTY_IO_ERROR, &tty->flags); - info->port.flags &= ~ASYNC_INITIALIZED; - spin_unlock_irqrestore(&card->card_lock, flags); - } else { -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " - "base_addr %p\n", card, channel, card->base_addr); -#endif - - if (!cyz_is_loaded(card)) - return; - - spin_lock_irqsave(&card->card_lock, flags); - - if (info->port.xmit_buf) { - unsigned char *temp; - temp = info->port.xmit_buf; - info->port.xmit_buf = NULL; - free_page((unsigned long)temp); - } - - if (tty->termios->c_cflag & HUPCL) - tty_port_lower_dtr_rts(&info->port); - - set_bit(TTY_IO_ERROR, &tty->flags); - info->port.flags &= ~ASYNC_INITIALIZED; - - spin_unlock_irqrestore(&card->card_lock, flags); - } - -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc shutdown done\n"); -#endif -} /* shutdown */ - -/* - * ------------------------------------------------------------ - * cy_open() and friends - * ------------------------------------------------------------ - */ - -/* - * This routine is called whenever a serial port is opened. It - * performs the serial-specific initialization for the tty structure. - */ -static int cy_open(struct tty_struct *tty, struct file *filp) -{ - struct cyclades_port *info; - unsigned int i, line; - int retval; - - line = tty->index; - if (tty->index < 0 || NR_PORTS <= line) - return -ENODEV; - - for (i = 0; i < NR_CARDS; i++) - if (line < cy_card[i].first_line + cy_card[i].nports && - line >= cy_card[i].first_line) - break; - if (i >= NR_CARDS) - return -ENODEV; - info = &cy_card[i].ports[line - cy_card[i].first_line]; - if (info->line < 0) - return -ENODEV; - - /* If the card's firmware hasn't been loaded, - treat it as absent from the system. This - will make the user pay attention. - */ - if (cy_is_Z(info->card)) { - struct cyclades_card *cinfo = info->card; - struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; - - if (!cyz_is_loaded(cinfo)) { - if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && - readl(&firm_id->signature) == - ZFIRM_HLT) { - printk(KERN_ERR "cyc:Cyclades-Z Error: you " - "need an external power supply for " - "this number of ports.\nFirmware " - "halted.\n"); - } else { - printk(KERN_ERR "cyc:Cyclades-Z firmware not " - "yet loaded\n"); - } - return -ENODEV; - } -#ifdef CONFIG_CYZ_INTR - else { - /* In case this Z board is operating in interrupt mode, its - interrupts should be enabled as soon as the first open - happens to one of its ports. */ - if (!cinfo->intr_enabled) { - u16 intr; - - /* Enable interrupts on the PLX chip */ - intr = readw(&cinfo->ctl_addr.p9060-> - intr_ctrl_stat) | 0x0900; - cy_writew(&cinfo->ctl_addr.p9060-> - intr_ctrl_stat, intr); - /* Enable interrupts on the FW */ - retval = cyz_issue_cmd(cinfo, 0, - C_CM_IRQ_ENBL, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:IRQ enable retval " - "was %x\n", retval); - } - cinfo->intr_enabled = 1; - } - } -#endif /* CONFIG_CYZ_INTR */ - /* Make sure this Z port really exists in hardware */ - if (info->line > (cinfo->first_line + cinfo->nports - 1)) - return -ENODEV; - } -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); -#endif - tty->driver_data = info; - if (serial_paranoia_check(info, tty->name, "cy_open")) - return -ENODEV; - -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, - info->port.count); -#endif - info->port.count++; -#ifdef CY_DEBUG_COUNT - printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", - current->pid, info->port.count); -#endif - - /* - * If the port is the middle of closing, bail out now - */ - if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { - wait_event_interruptible_tty(info->port.close_wait, - !(info->port.flags & ASYNC_CLOSING)); - return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; - } - - /* - * Start up serial port - */ - retval = cy_startup(info, tty); - if (retval) - return retval; - - retval = tty_port_block_til_ready(&info->port, tty, filp); - if (retval) { -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " - "with %d\n", retval); -#endif - return retval; - } - - info->throttle = 0; - tty_port_tty_set(&info->port, tty); - -#ifdef CY_DEBUG_OPEN - printk(KERN_DEBUG "cyc:cy_open done\n"); -#endif - return 0; -} /* cy_open */ - -/* - * cy_wait_until_sent() --- wait until the transmitter is empty - */ -static void cy_wait_until_sent(struct tty_struct *tty, int timeout) -{ - struct cyclades_card *card; - struct cyclades_port *info = tty->driver_data; - unsigned long orig_jiffies; - int char_time; - - if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) - return; - - if (info->xmit_fifo_size == 0) - return; /* Just in case.... */ - - orig_jiffies = jiffies; - /* - * Set the check interval to be 1/5 of the estimated time to - * send a single character, and make it at least 1. The check - * interval should also be less than the timeout. - * - * Note: we have to use pretty tight timings here to satisfy - * the NIST-PCTS. - */ - char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; - char_time = char_time / 5; - if (char_time <= 0) - char_time = 1; - if (timeout < 0) - timeout = 0; - if (timeout) - char_time = min(char_time, timeout); - /* - * If the transmitter hasn't cleared in twice the approximate - * amount of time to send the entire FIFO, it probably won't - * ever clear. This assumes the UART isn't doing flow - * control, which is currently the case. Hence, if it ever - * takes longer than info->timeout, this is probably due to a - * UART bug of some kind. So, we clamp the timeout parameter at - * 2*info->timeout. - */ - if (!timeout || timeout > 2 * info->timeout) - timeout = 2 * info->timeout; -#ifdef CY_DEBUG_WAIT_UNTIL_SENT - printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", - timeout, char_time, jiffies); -#endif - card = info->card; - if (!cy_is_Z(card)) { - while (cyy_readb(info, CySRER) & CyTxRdy) { -#ifdef CY_DEBUG_WAIT_UNTIL_SENT - printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); -#endif - if (msleep_interruptible(jiffies_to_msecs(char_time))) - break; - if (timeout && time_after(jiffies, orig_jiffies + - timeout)) - break; - } - } - /* Run one more char cycle */ - msleep_interruptible(jiffies_to_msecs(char_time * 5)); -#ifdef CY_DEBUG_WAIT_UNTIL_SENT - printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); -#endif -} - -static void cy_flush_buffer(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - int channel, retval; - unsigned long flags; - -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) - return; - - card = info->card; - channel = info->line - card->first_line; - - spin_lock_irqsave(&card->card_lock, flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - spin_unlock_irqrestore(&card->card_lock, flags); - - if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board - buffers as well */ - spin_lock_irqsave(&card->card_lock, flags); - retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " - "was %x\n", info->line, retval); - } - spin_unlock_irqrestore(&card->card_lock, flags); - } - tty_wakeup(tty); -} /* cy_flush_buffer */ - - -static void cy_do_close(struct tty_port *port) -{ - struct cyclades_port *info = container_of(port, struct cyclades_port, - port); - struct cyclades_card *card; - unsigned long flags; - int channel; - - card = info->card; - channel = info->line - card->first_line; - spin_lock_irqsave(&card->card_lock, flags); - - if (!cy_is_Z(card)) { - /* Stop accepting input */ - cyy_writeb(info, CyCAR, channel & 0x03); - cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); - if (info->port.flags & ASYNC_INITIALIZED) { - /* Waiting for on-board buffers to be empty before - closing the port */ - spin_unlock_irqrestore(&card->card_lock, flags); - cy_wait_until_sent(port->tty, info->timeout); - spin_lock_irqsave(&card->card_lock, flags); - } - } else { -#ifdef Z_WAKE - /* Waiting for on-board buffers to be empty before closing - the port */ - struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; - int retval; - - if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { - retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); - if (retval != 0) { - printk(KERN_DEBUG "cyc:cy_close retval on " - "ttyC%d was %x\n", info->line, retval); - } - spin_unlock_irqrestore(&card->card_lock, flags); - wait_for_completion_interruptible(&info->shutdown_wait); - spin_lock_irqsave(&card->card_lock, flags); - } -#endif - } - spin_unlock_irqrestore(&card->card_lock, flags); - cy_shutdown(info, port->tty); -} - -/* - * This routine is called when a particular tty device is closed. - */ -static void cy_close(struct tty_struct *tty, struct file *filp) -{ - struct cyclades_port *info = tty->driver_data; - if (!info || serial_paranoia_check(info, tty->name, "cy_close")) - return; - tty_port_close(&info->port, tty, filp); -} /* cy_close */ - -/* This routine gets called when tty_write has put something into - * the write_queue. The characters may come from user space or - * kernel space. - * - * This routine will return the number of characters actually - * accepted for writing. - * - * If the port is not already transmitting stuff, start it off by - * enabling interrupts. The interrupt service routine will then - * ensure that the characters are sent. - * If the port is already active, there is no need to kick it. - * - */ -static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - int c, ret = 0; - -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_write")) - return 0; - - if (!info->port.xmit_buf) - return 0; - - spin_lock_irqsave(&info->card->card_lock, flags); - while (1) { - c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); - c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); - - if (c <= 0) - break; - - memcpy(info->port.xmit_buf + info->xmit_head, buf, c); - info->xmit_head = (info->xmit_head + c) & - (SERIAL_XMIT_SIZE - 1); - info->xmit_cnt += c; - buf += c; - count -= c; - ret += c; - } - spin_unlock_irqrestore(&info->card->card_lock, flags); - - info->idle_stats.xmit_bytes += ret; - info->idle_stats.xmit_idle = jiffies; - - if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) - start_xmit(info); - - return ret; -} /* cy_write */ - -/* - * This routine is called by the kernel to write a single - * character to the tty device. If the kernel uses this routine, - * it must call the flush_chars() routine (if defined) when it is - * done stuffing characters into the driver. If there is no room - * in the queue, the character is ignored. - */ -static int cy_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_put_char")) - return 0; - - if (!info->port.xmit_buf) - return 0; - - spin_lock_irqsave(&info->card->card_lock, flags); - if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { - spin_unlock_irqrestore(&info->card->card_lock, flags); - return 0; - } - - info->port.xmit_buf[info->xmit_head++] = ch; - info->xmit_head &= SERIAL_XMIT_SIZE - 1; - info->xmit_cnt++; - info->idle_stats.xmit_bytes++; - info->idle_stats.xmit_idle = jiffies; - spin_unlock_irqrestore(&info->card->card_lock, flags); - return 1; -} /* cy_put_char */ - -/* - * This routine is called by the kernel after it has written a - * series of characters to the tty device using put_char(). - */ -static void cy_flush_chars(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) - return; - - if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || - !info->port.xmit_buf) - return; - - start_xmit(info); -} /* cy_flush_chars */ - -/* - * This routine returns the numbers of characters the tty driver - * will accept for queuing to be written. This number is subject - * to change as output buffers get emptied, or if the output flow - * control is activated. - */ -static int cy_write_room(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - int ret; - -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_write_room")) - return 0; - ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; - if (ret < 0) - ret = 0; - return ret; -} /* cy_write_room */ - -static int cy_chars_in_buffer(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - - if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) - return 0; - -#ifdef Z_EXT_CHARS_IN_BUFFER - if (!cy_is_Z(info->card)) { -#endif /* Z_EXT_CHARS_IN_BUFFER */ -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", - info->line, info->xmit_cnt); -#endif - return info->xmit_cnt; -#ifdef Z_EXT_CHARS_IN_BUFFER - } else { - struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; - int char_count; - __u32 tx_put, tx_get, tx_bufsize; - - tx_get = readl(&buf_ctrl->tx_get); - tx_put = readl(&buf_ctrl->tx_put); - tx_bufsize = readl(&buf_ctrl->tx_bufsize); - if (tx_put >= tx_get) - char_count = tx_put - tx_get; - else - char_count = tx_put - tx_get + tx_bufsize; -#ifdef CY_DEBUG_IO - printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", - info->line, info->xmit_cnt + char_count); -#endif - return info->xmit_cnt + char_count; - } -#endif /* Z_EXT_CHARS_IN_BUFFER */ -} /* cy_chars_in_buffer */ - -/* - * ------------------------------------------------------------ - * cy_ioctl() and friends - * ------------------------------------------------------------ - */ - -static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) -{ - int co, co_val, bpr; - __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : - 25000000); - - if (baud == 0) { - info->tbpr = info->tco = info->rbpr = info->rco = 0; - return; - } - - /* determine which prescaler to use */ - for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { - if (cy_clock / co_val / baud > 63) - break; - } - - bpr = (cy_clock / co_val * 2 / baud + 1) / 2; - if (bpr > 255) - bpr = 255; - - info->tbpr = info->rbpr = bpr; - info->tco = info->rco = co; -} - -/* - * This routine finds or computes the various line characteristics. - * It used to be called config_setup - */ -static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) -{ - struct cyclades_card *card; - unsigned long flags; - int channel; - unsigned cflag, iflag; - int baud, baud_rate = 0; - int i; - - if (!tty->termios) /* XXX can this happen at all? */ - return; - - if (info->line == -1) - return; - - cflag = tty->termios->c_cflag; - iflag = tty->termios->c_iflag; - - /* - * Set up the tty->alt_speed kludge - */ - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - tty->alt_speed = 57600; - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - tty->alt_speed = 115200; - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - tty->alt_speed = 230400; - if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - tty->alt_speed = 460800; - - card = info->card; - channel = info->line - card->first_line; - - if (!cy_is_Z(card)) { - u32 cflags; - - /* baud rate */ - baud = tty_get_baud_rate(tty); - if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == - ASYNC_SPD_CUST) { - if (info->custom_divisor) - baud_rate = info->baud / info->custom_divisor; - else - baud_rate = info->baud; - } else if (baud > CD1400_MAX_SPEED) { - baud = CD1400_MAX_SPEED; - } - /* find the baud index */ - for (i = 0; i < 20; i++) { - if (baud == baud_table[i]) - break; - } - if (i == 20) - i = 19; /* CD1400_MAX_SPEED */ - - if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == - ASYNC_SPD_CUST) { - cyy_baud_calc(info, baud_rate); - } else { - if (info->chip_rev >= CD1400_REV_J) { - /* It is a CD1400 rev. J or later */ - info->tbpr = baud_bpr_60[i]; /* Tx BPR */ - info->tco = baud_co_60[i]; /* Tx CO */ - info->rbpr = baud_bpr_60[i]; /* Rx BPR */ - info->rco = baud_co_60[i]; /* Rx CO */ - } else { - info->tbpr = baud_bpr_25[i]; /* Tx BPR */ - info->tco = baud_co_25[i]; /* Tx CO */ - info->rbpr = baud_bpr_25[i]; /* Rx BPR */ - info->rco = baud_co_25[i]; /* Rx CO */ - } - } - if (baud_table[i] == 134) { - /* get it right for 134.5 baud */ - info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + - 2; - } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == - ASYNC_SPD_CUST) { - info->timeout = (info->xmit_fifo_size * HZ * 15 / - baud_rate) + 2; - } else if (baud_table[i]) { - info->timeout = (info->xmit_fifo_size * HZ * 15 / - baud_table[i]) + 2; - /* this needs to be propagated into the card info */ - } else { - info->timeout = 0; - } - /* By tradition (is it a standard?) a baud rate of zero - implies the line should be/has been closed. A bit - later in this routine such a test is performed. */ - - /* byte size and parity */ - info->cor5 = 0; - info->cor4 = 0; - /* receive threshold */ - info->cor3 = (info->default_threshold ? - info->default_threshold : baud_cor3[i]); - info->cor2 = CyETC; - switch (cflag & CSIZE) { - case CS5: - info->cor1 = Cy_5_BITS; - break; - case CS6: - info->cor1 = Cy_6_BITS; - break; - case CS7: - info->cor1 = Cy_7_BITS; - break; - case CS8: - info->cor1 = Cy_8_BITS; - break; - } - if (cflag & CSTOPB) - info->cor1 |= Cy_2_STOP; - - if (cflag & PARENB) { - if (cflag & PARODD) - info->cor1 |= CyPARITY_O; - else - info->cor1 |= CyPARITY_E; - } else - info->cor1 |= CyPARITY_NONE; - - /* CTS flow control flag */ - if (cflag & CRTSCTS) { - info->port.flags |= ASYNC_CTS_FLOW; - info->cor2 |= CyCtsAE; - } else { - info->port.flags &= ~ASYNC_CTS_FLOW; - info->cor2 &= ~CyCtsAE; - } - if (cflag & CLOCAL) - info->port.flags &= ~ASYNC_CHECK_CD; - else - info->port.flags |= ASYNC_CHECK_CD; - - /*********************************************** - The hardware option, CyRtsAO, presents RTS when - the chip has characters to send. Since most modems - use RTS as reverse (inbound) flow control, this - option is not used. If inbound flow control is - necessary, DTR can be programmed to provide the - appropriate signals for use with a non-standard - cable. Contact Marcio Saito for details. - ***********************************************/ - - channel &= 0x03; - - spin_lock_irqsave(&card->card_lock, flags); - cyy_writeb(info, CyCAR, channel); - - /* tx and rx baud rate */ - - cyy_writeb(info, CyTCOR, info->tco); - cyy_writeb(info, CyTBPR, info->tbpr); - cyy_writeb(info, CyRCOR, info->rco); - cyy_writeb(info, CyRBPR, info->rbpr); - - /* set line characteristics according configuration */ - - cyy_writeb(info, CySCHR1, START_CHAR(tty)); - cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); - cyy_writeb(info, CyCOR1, info->cor1); - cyy_writeb(info, CyCOR2, info->cor2); - cyy_writeb(info, CyCOR3, info->cor3); - cyy_writeb(info, CyCOR4, info->cor4); - cyy_writeb(info, CyCOR5, info->cor5); - - cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | - CyCOR3ch); - - /* !!! Is this needed? */ - cyy_writeb(info, CyCAR, channel); - cyy_writeb(info, CyRTPR, - (info->default_timeout ? info->default_timeout : 0x02)); - /* 10ms rx timeout */ - - cflags = CyCTS; - if (!C_CLOCAL(tty)) - cflags |= CyDSR | CyRI | CyDCD; - /* without modem intr */ - cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); - /* act on 1->0 modem transitions */ - if ((cflag & CRTSCTS) && info->rflow) - cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); - else - cyy_writeb(info, CyMCOR1, cflags); - /* act on 0->1 modem transitions */ - cyy_writeb(info, CyMCOR2, cflags); - - if (i == 0) /* baud rate is zero, turn off line */ - cyy_change_rts_dtr(info, 0, TIOCM_DTR); - else - cyy_change_rts_dtr(info, TIOCM_DTR, 0); - - clear_bit(TTY_IO_ERROR, &tty->flags); - spin_unlock_irqrestore(&card->card_lock, flags); - - } else { - struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; - __u32 sw_flow; - int retval; - - if (!cyz_is_loaded(card)) - return; - - /* baud rate */ - baud = tty_get_baud_rate(tty); - if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == - ASYNC_SPD_CUST) { - if (info->custom_divisor) - baud_rate = info->baud / info->custom_divisor; - else - baud_rate = info->baud; - } else if (baud > CYZ_MAX_SPEED) { - baud = CYZ_MAX_SPEED; - } - cy_writel(&ch_ctrl->comm_baud, baud); - - if (baud == 134) { - /* get it right for 134.5 baud */ - info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + - 2; - } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == - ASYNC_SPD_CUST) { - info->timeout = (info->xmit_fifo_size * HZ * 15 / - baud_rate) + 2; - } else if (baud) { - info->timeout = (info->xmit_fifo_size * HZ * 15 / - baud) + 2; - /* this needs to be propagated into the card info */ - } else { - info->timeout = 0; - } - - /* byte size and parity */ - switch (cflag & CSIZE) { - case CS5: - cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); - break; - case CS6: - cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); - break; - case CS7: - cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); - break; - case CS8: - cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); - break; - } - if (cflag & CSTOPB) { - cy_writel(&ch_ctrl->comm_data_l, - readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); - } else { - cy_writel(&ch_ctrl->comm_data_l, - readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); - } - if (cflag & PARENB) { - if (cflag & PARODD) - cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); - else - cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); - } else - cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); - - /* CTS flow control flag */ - if (cflag & CRTSCTS) { - cy_writel(&ch_ctrl->hw_flow, - readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); - } else { - cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & - ~(C_RS_CTS | C_RS_RTS)); - } - /* As the HW flow control is done in firmware, the driver - doesn't need to care about it */ - info->port.flags &= ~ASYNC_CTS_FLOW; - - /* XON/XOFF/XANY flow control flags */ - sw_flow = 0; - if (iflag & IXON) { - sw_flow |= C_FL_OXX; - if (iflag & IXANY) - sw_flow |= C_FL_OIXANY; - } - cy_writel(&ch_ctrl->sw_flow, sw_flow); - - retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " - "was %x\n", info->line, retval); - } - - /* CD sensitivity */ - if (cflag & CLOCAL) - info->port.flags &= ~ASYNC_CHECK_CD; - else - info->port.flags |= ASYNC_CHECK_CD; - - if (baud == 0) { /* baud rate is zero, turn off line */ - cy_writel(&ch_ctrl->rs_control, - readl(&ch_ctrl->rs_control) & ~C_RS_DTR); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); -#endif - } else { - cy_writel(&ch_ctrl->rs_control, - readl(&ch_ctrl->rs_control) | C_RS_DTR); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); -#endif - } - - retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " - "was %x\n", info->line, retval); - } - - clear_bit(TTY_IO_ERROR, &tty->flags); - } -} /* set_line_char */ - -static int cy_get_serial_info(struct cyclades_port *info, - struct serial_struct __user *retinfo) -{ - struct cyclades_card *cinfo = info->card; - struct serial_struct tmp = { - .type = info->type, - .line = info->line, - .port = (info->card - cy_card) * 0x100 + info->line - - cinfo->first_line, - .irq = cinfo->irq, - .flags = info->port.flags, - .close_delay = info->port.close_delay, - .closing_wait = info->port.closing_wait, - .baud_base = info->baud, - .custom_divisor = info->custom_divisor, - .hub6 = 0, /*!!! */ - }; - return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; -} - -static int -cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, - struct serial_struct __user *new_info) -{ - struct serial_struct new_serial; - int ret; - - if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) - return -EFAULT; - - mutex_lock(&info->port.mutex); - if (!capable(CAP_SYS_ADMIN)) { - if (new_serial.close_delay != info->port.close_delay || - new_serial.baud_base != info->baud || - (new_serial.flags & ASYNC_FLAGS & - ~ASYNC_USR_MASK) != - (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) - { - mutex_unlock(&info->port.mutex); - return -EPERM; - } - info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | - (new_serial.flags & ASYNC_USR_MASK); - info->baud = new_serial.baud_base; - info->custom_divisor = new_serial.custom_divisor; - goto check_and_exit; - } - - /* - * OK, past this point, all the error checking has been done. - * At this point, we start making changes..... - */ - - info->baud = new_serial.baud_base; - info->custom_divisor = new_serial.custom_divisor; - info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | - (new_serial.flags & ASYNC_FLAGS); - info->port.close_delay = new_serial.close_delay * HZ / 100; - info->port.closing_wait = new_serial.closing_wait * HZ / 100; - -check_and_exit: - if (info->port.flags & ASYNC_INITIALIZED) { - cy_set_line_char(info, tty); - ret = 0; - } else { - ret = cy_startup(info, tty); - } - mutex_unlock(&info->port.mutex); - return ret; -} /* set_serial_info */ - -/* - * get_lsr_info - get line status register info - * - * Purpose: Let user call ioctl() to get info when the UART physically - * is emptied. On bus types like RS485, the transmitter must - * release the bus after transmitting. This must be done when - * the transmit shift register is empty, not be done when the - * transmit holding register is empty. This functionality - * allows an RS485 driver to be written in user space. - */ -static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) -{ - struct cyclades_card *card = info->card; - unsigned int result; - unsigned long flags; - u8 status; - - if (!cy_is_Z(card)) { - spin_lock_irqsave(&card->card_lock, flags); - status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); - spin_unlock_irqrestore(&card->card_lock, flags); - result = (status ? 0 : TIOCSER_TEMT); - } else { - /* Not supported yet */ - return -EINVAL; - } - return put_user(result, (unsigned long __user *)value); -} - -static int cy_tiocmget(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - int result; - - if (serial_paranoia_check(info, tty->name, __func__)) - return -ENODEV; - - card = info->card; - - if (!cy_is_Z(card)) { - unsigned long flags; - int channel = info->line - card->first_line; - u8 status; - - spin_lock_irqsave(&card->card_lock, flags); - cyy_writeb(info, CyCAR, channel & 0x03); - status = cyy_readb(info, CyMSVR1); - status |= cyy_readb(info, CyMSVR2); - spin_unlock_irqrestore(&card->card_lock, flags); - - if (info->rtsdtr_inv) { - result = ((status & CyRTS) ? TIOCM_DTR : 0) | - ((status & CyDTR) ? TIOCM_RTS : 0); - } else { - result = ((status & CyRTS) ? TIOCM_RTS : 0) | - ((status & CyDTR) ? TIOCM_DTR : 0); - } - result |= ((status & CyDCD) ? TIOCM_CAR : 0) | - ((status & CyRI) ? TIOCM_RNG : 0) | - ((status & CyDSR) ? TIOCM_DSR : 0) | - ((status & CyCTS) ? TIOCM_CTS : 0); - } else { - u32 lstatus; - - if (!cyz_is_loaded(card)) { - result = -ENODEV; - goto end; - } - - lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); - result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | - ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | - ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | - ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | - ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | - ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); - } -end: - return result; -} /* cy_tiomget */ - -static int -cy_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - unsigned long flags; - - if (serial_paranoia_check(info, tty->name, __func__)) - return -ENODEV; - - card = info->card; - if (!cy_is_Z(card)) { - spin_lock_irqsave(&card->card_lock, flags); - cyy_change_rts_dtr(info, set, clear); - spin_unlock_irqrestore(&card->card_lock, flags); - } else { - struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; - int retval, channel = info->line - card->first_line; - u32 rs; - - if (!cyz_is_loaded(card)) - return -ENODEV; - - spin_lock_irqsave(&card->card_lock, flags); - rs = readl(&ch_ctrl->rs_control); - if (set & TIOCM_RTS) - rs |= C_RS_RTS; - if (clear & TIOCM_RTS) - rs &= ~C_RS_RTS; - if (set & TIOCM_DTR) { - rs |= C_RS_DTR; -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); -#endif - } - if (clear & TIOCM_DTR) { - rs &= ~C_RS_DTR; -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "cyc:set_modem_info clearing " - "Z DTR\n"); -#endif - } - cy_writel(&ch_ctrl->rs_control, rs); - retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); - spin_unlock_irqrestore(&card->card_lock, flags); - if (retval != 0) { - printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " - "was %x\n", info->line, retval); - } - } - return 0; -} - -/* - * cy_break() --- routine which turns the break handling on or off - */ -static int cy_break(struct tty_struct *tty, int break_state) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - unsigned long flags; - int retval = 0; - - if (serial_paranoia_check(info, tty->name, "cy_break")) - return -EINVAL; - - card = info->card; - - spin_lock_irqsave(&card->card_lock, flags); - if (!cy_is_Z(card)) { - /* Let the transmit ISR take care of this (since it - requires stuffing characters into the output stream). - */ - if (break_state == -1) { - if (!info->breakon) { - info->breakon = 1; - if (!info->xmit_cnt) { - spin_unlock_irqrestore(&card->card_lock, flags); - start_xmit(info); - spin_lock_irqsave(&card->card_lock, flags); - } - } - } else { - if (!info->breakoff) { - info->breakoff = 1; - if (!info->xmit_cnt) { - spin_unlock_irqrestore(&card->card_lock, flags); - start_xmit(info); - spin_lock_irqsave(&card->card_lock, flags); - } - } - } - } else { - if (break_state == -1) { - retval = cyz_issue_cmd(card, - info->line - card->first_line, - C_CM_SET_BREAK, 0L); - if (retval != 0) { - printk(KERN_ERR "cyc:cy_break (set) retval on " - "ttyC%d was %x\n", info->line, retval); - } - } else { - retval = cyz_issue_cmd(card, - info->line - card->first_line, - C_CM_CLR_BREAK, 0L); - if (retval != 0) { - printk(KERN_DEBUG "cyc:cy_break (clr) retval " - "on ttyC%d was %x\n", info->line, - retval); - } - } - } - spin_unlock_irqrestore(&card->card_lock, flags); - return retval; -} /* cy_break */ - -static int set_threshold(struct cyclades_port *info, unsigned long value) -{ - struct cyclades_card *card = info->card; - unsigned long flags; - - if (!cy_is_Z(card)) { - info->cor3 &= ~CyREC_FIFO; - info->cor3 |= value & CyREC_FIFO; - - spin_lock_irqsave(&card->card_lock, flags); - cyy_writeb(info, CyCOR3, info->cor3); - cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); - spin_unlock_irqrestore(&card->card_lock, flags); - } - return 0; -} /* set_threshold */ - -static int get_threshold(struct cyclades_port *info, - unsigned long __user *value) -{ - struct cyclades_card *card = info->card; - - if (!cy_is_Z(card)) { - u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; - return put_user(tmp, value); - } - return 0; -} /* get_threshold */ - -static int set_timeout(struct cyclades_port *info, unsigned long value) -{ - struct cyclades_card *card = info->card; - unsigned long flags; - - if (!cy_is_Z(card)) { - spin_lock_irqsave(&card->card_lock, flags); - cyy_writeb(info, CyRTPR, value & 0xff); - spin_unlock_irqrestore(&card->card_lock, flags); - } - return 0; -} /* set_timeout */ - -static int get_timeout(struct cyclades_port *info, - unsigned long __user *value) -{ - struct cyclades_card *card = info->card; - - if (!cy_is_Z(card)) { - u8 tmp = cyy_readb(info, CyRTPR); - return put_user(tmp, value); - } - return 0; -} /* get_timeout */ - -static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, - struct cyclades_icount *cprev) -{ - struct cyclades_icount cnow; - unsigned long flags; - int ret; - - spin_lock_irqsave(&info->card->card_lock, flags); - cnow = info->icount; /* atomic copy */ - spin_unlock_irqrestore(&info->card->card_lock, flags); - - ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); - - *cprev = cnow; - - return ret; -} - -/* - * This routine allows the tty driver to implement device- - * specific ioctl's. If the ioctl number passed in cmd is - * not recognized by the driver, it should return ENOIOCTLCMD. - */ -static int -cy_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_icount cnow; /* kernel counter temps */ - int ret_val = 0; - unsigned long flags; - void __user *argp = (void __user *)arg; - - if (serial_paranoia_check(info, tty->name, "cy_ioctl")) - return -ENODEV; - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", - info->line, cmd, arg); -#endif - - switch (cmd) { - case CYGETMON: - if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { - ret_val = -EFAULT; - break; - } - memset(&info->mon, 0, sizeof(info->mon)); - break; - case CYGETTHRESH: - ret_val = get_threshold(info, argp); - break; - case CYSETTHRESH: - ret_val = set_threshold(info, arg); - break; - case CYGETDEFTHRESH: - ret_val = put_user(info->default_threshold, - (unsigned long __user *)argp); - break; - case CYSETDEFTHRESH: - info->default_threshold = arg & 0x0f; - break; - case CYGETTIMEOUT: - ret_val = get_timeout(info, argp); - break; - case CYSETTIMEOUT: - ret_val = set_timeout(info, arg); - break; - case CYGETDEFTIMEOUT: - ret_val = put_user(info->default_timeout, - (unsigned long __user *)argp); - break; - case CYSETDEFTIMEOUT: - info->default_timeout = arg & 0xff; - break; - case CYSETRFLOW: - info->rflow = (int)arg; - break; - case CYGETRFLOW: - ret_val = info->rflow; - break; - case CYSETRTSDTR_INV: - info->rtsdtr_inv = (int)arg; - break; - case CYGETRTSDTR_INV: - ret_val = info->rtsdtr_inv; - break; - case CYGETCD1400VER: - ret_val = info->chip_rev; - break; -#ifndef CONFIG_CYZ_INTR - case CYZSETPOLLCYCLE: - cyz_polling_cycle = (arg * HZ) / 1000; - break; - case CYZGETPOLLCYCLE: - ret_val = (cyz_polling_cycle * 1000) / HZ; - break; -#endif /* CONFIG_CYZ_INTR */ - case CYSETWAIT: - info->port.closing_wait = (unsigned short)arg * HZ / 100; - break; - case CYGETWAIT: - ret_val = info->port.closing_wait / (HZ / 100); - break; - case TIOCGSERIAL: - ret_val = cy_get_serial_info(info, argp); - break; - case TIOCSSERIAL: - ret_val = cy_set_serial_info(info, tty, argp); - break; - case TIOCSERGETLSR: /* Get line status register */ - ret_val = get_lsr_info(info, argp); - break; - /* - * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - * - mask passed in arg for lines of interest - * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) - * Caller should use TIOCGICOUNT to see which one it was - */ - case TIOCMIWAIT: - spin_lock_irqsave(&info->card->card_lock, flags); - /* note the counters on entry */ - cnow = info->icount; - spin_unlock_irqrestore(&info->card->card_lock, flags); - ret_val = wait_event_interruptible(info->port.delta_msr_wait, - cy_cflags_changed(info, arg, &cnow)); - break; - - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - default: - ret_val = -ENOIOCTLCMD; - } - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_ioctl done\n"); -#endif - return ret_val; -} /* cy_ioctl */ - -static int cy_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *sic) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_icount cnow; /* Used to snapshot */ - unsigned long flags; - - spin_lock_irqsave(&info->card->card_lock, flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->card->card_lock, flags); - - sic->cts = cnow.cts; - sic->dsr = cnow.dsr; - sic->rng = cnow.rng; - sic->dcd = cnow.dcd; - sic->rx = cnow.rx; - sic->tx = cnow.tx; - sic->frame = cnow.frame; - sic->overrun = cnow.overrun; - sic->parity = cnow.parity; - sic->brk = cnow.brk; - sic->buf_overrun = cnow.buf_overrun; - return 0; -} - -/* - * This routine allows the tty driver to be notified when - * device's termios settings have changed. Note that a - * well-designed tty driver should be prepared to accept the case - * where old == NULL, and try to do something rational. - */ -static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); -#endif - - cy_set_line_char(info, tty); - - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - cy_start(tty); - } -#if 0 - /* - * No need to wake up processes in open wait, since they - * sample the CLOCAL flag once, and don't recheck it. - * XXX It's not clear whether the current behavior is correct - * or not. Hence, this may change..... - */ - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&info->port.open_wait); -#endif -} /* cy_set_termios */ - -/* This function is used to send a high-priority XON/XOFF character to - the device. -*/ -static void cy_send_xchar(struct tty_struct *tty, char ch) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - int channel; - - if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) - return; - - info->x_char = ch; - - if (ch) - cy_start(tty); - - card = info->card; - channel = info->line - card->first_line; - - if (cy_is_Z(card)) { - if (ch == STOP_CHAR(tty)) - cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); - else if (ch == START_CHAR(tty)) - cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); - } -} - -/* This routine is called by the upper-layer tty layer to signal - that incoming characters should be throttled because the input - buffers are close to full. - */ -static void cy_throttle(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - unsigned long flags; - -#ifdef CY_DEBUG_THROTTLE - char buf[64]; - - printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty), info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_throttle")) - return; - - card = info->card; - - if (I_IXOFF(tty)) { - if (!cy_is_Z(card)) - cy_send_xchar(tty, STOP_CHAR(tty)); - else - info->throttle = 1; - } - - if (tty->termios->c_cflag & CRTSCTS) { - if (!cy_is_Z(card)) { - spin_lock_irqsave(&card->card_lock, flags); - cyy_change_rts_dtr(info, 0, TIOCM_RTS); - spin_unlock_irqrestore(&card->card_lock, flags); - } else { - info->throttle = 1; - } - } -} /* cy_throttle */ - -/* - * This routine notifies the tty driver that it should signal - * that characters can now be sent to the tty without fear of - * overrunning the input buffers of the line disciplines. - */ -static void cy_unthrottle(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - struct cyclades_card *card; - unsigned long flags; - -#ifdef CY_DEBUG_THROTTLE - char buf[64]; - - printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", - tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) - return; - - if (I_IXOFF(tty)) { - if (info->x_char) - info->x_char = 0; - else - cy_send_xchar(tty, START_CHAR(tty)); - } - - if (tty->termios->c_cflag & CRTSCTS) { - card = info->card; - if (!cy_is_Z(card)) { - spin_lock_irqsave(&card->card_lock, flags); - cyy_change_rts_dtr(info, TIOCM_RTS, 0); - spin_unlock_irqrestore(&card->card_lock, flags); - } else { - info->throttle = 0; - } - } -} /* cy_unthrottle */ - -/* cy_start and cy_stop provide software output flow control as a - function of XON/XOFF, software CTS, and other such stuff. -*/ -static void cy_stop(struct tty_struct *tty) -{ - struct cyclades_card *cinfo; - struct cyclades_port *info = tty->driver_data; - int channel; - unsigned long flags; - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_stop")) - return; - - cinfo = info->card; - channel = info->line - cinfo->first_line; - if (!cy_is_Z(cinfo)) { - spin_lock_irqsave(&cinfo->card_lock, flags); - cyy_writeb(info, CyCAR, channel & 0x03); - cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); - spin_unlock_irqrestore(&cinfo->card_lock, flags); - } -} /* cy_stop */ - -static void cy_start(struct tty_struct *tty) -{ - struct cyclades_card *cinfo; - struct cyclades_port *info = tty->driver_data; - int channel; - unsigned long flags; - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_start")) - return; - - cinfo = info->card; - channel = info->line - cinfo->first_line; - if (!cy_is_Z(cinfo)) { - spin_lock_irqsave(&cinfo->card_lock, flags); - cyy_writeb(info, CyCAR, channel & 0x03); - cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); - spin_unlock_irqrestore(&cinfo->card_lock, flags); - } -} /* cy_start */ - -/* - * cy_hangup() --- called by tty_hangup() when a hangup is signaled. - */ -static void cy_hangup(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef CY_DEBUG_OTHER - printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_hangup")) - return; - - cy_flush_buffer(tty); - cy_shutdown(info, tty); - tty_port_hangup(&info->port); -} /* cy_hangup */ - -static int cyy_carrier_raised(struct tty_port *port) -{ - struct cyclades_port *info = container_of(port, struct cyclades_port, - port); - struct cyclades_card *cinfo = info->card; - unsigned long flags; - int channel = info->line - cinfo->first_line; - u32 cd; - - spin_lock_irqsave(&cinfo->card_lock, flags); - cyy_writeb(info, CyCAR, channel & 0x03); - cd = cyy_readb(info, CyMSVR1) & CyDCD; - spin_unlock_irqrestore(&cinfo->card_lock, flags); - - return cd; -} - -static void cyy_dtr_rts(struct tty_port *port, int raise) -{ - struct cyclades_port *info = container_of(port, struct cyclades_port, - port); - struct cyclades_card *cinfo = info->card; - unsigned long flags; - - spin_lock_irqsave(&cinfo->card_lock, flags); - cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, - raise ? 0 : TIOCM_RTS | TIOCM_DTR); - spin_unlock_irqrestore(&cinfo->card_lock, flags); -} - -static int cyz_carrier_raised(struct tty_port *port) -{ - struct cyclades_port *info = container_of(port, struct cyclades_port, - port); - - return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; -} - -static void cyz_dtr_rts(struct tty_port *port, int raise) -{ - struct cyclades_port *info = container_of(port, struct cyclades_port, - port); - struct cyclades_card *cinfo = info->card; - struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; - int ret, channel = info->line - cinfo->first_line; - u32 rs; - - rs = readl(&ch_ctrl->rs_control); - if (raise) - rs |= C_RS_RTS | C_RS_DTR; - else - rs &= ~(C_RS_RTS | C_RS_DTR); - cy_writel(&ch_ctrl->rs_control, rs); - ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); - if (ret != 0) - printk(KERN_ERR "%s: retval on ttyC%d was %x\n", - __func__, info->line, ret); -#ifdef CY_DEBUG_DTR - printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); -#endif -} - -static const struct tty_port_operations cyy_port_ops = { - .carrier_raised = cyy_carrier_raised, - .dtr_rts = cyy_dtr_rts, - .shutdown = cy_do_close, -}; - -static const struct tty_port_operations cyz_port_ops = { - .carrier_raised = cyz_carrier_raised, - .dtr_rts = cyz_dtr_rts, - .shutdown = cy_do_close, -}; - -/* - * --------------------------------------------------------------------- - * cy_init() and friends - * - * cy_init() is called at boot-time to initialize the serial driver. - * --------------------------------------------------------------------- - */ - -static int __devinit cy_init_card(struct cyclades_card *cinfo) -{ - struct cyclades_port *info; - unsigned int channel, port; - - spin_lock_init(&cinfo->card_lock); - cinfo->intr_enabled = 0; - - cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), - GFP_KERNEL); - if (cinfo->ports == NULL) { - printk(KERN_ERR "Cyclades: cannot allocate ports\n"); - return -ENOMEM; - } - - for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; - channel++, port++) { - info = &cinfo->ports[channel]; - tty_port_init(&info->port); - info->magic = CYCLADES_MAGIC; - info->card = cinfo; - info->line = port; - - info->port.closing_wait = CLOSING_WAIT_DELAY; - info->port.close_delay = 5 * HZ / 10; - info->port.flags = STD_COM_FLAGS; - init_completion(&info->shutdown_wait); - - if (cy_is_Z(cinfo)) { - struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; - struct ZFW_CTRL *zfw_ctrl; - - info->port.ops = &cyz_port_ops; - info->type = PORT_STARTECH; - - zfw_ctrl = cinfo->base_addr + - (readl(&firm_id->zfwctrl_addr) & 0xfffff); - info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; - info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; - - if (cinfo->hw_ver == ZO_V1) - info->xmit_fifo_size = CYZ_FIFO_SIZE; - else - info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; -#ifdef CONFIG_CYZ_INTR - setup_timer(&cyz_rx_full_timer[port], - cyz_rx_restart, (unsigned long)info); -#endif - } else { - unsigned short chip_number; - int index = cinfo->bus_index; - - info->port.ops = &cyy_port_ops; - info->type = PORT_CIRRUS; - info->xmit_fifo_size = CyMAX_CHAR_FIFO; - info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; - info->cor2 = CyETC; - info->cor3 = 0x08; /* _very_ small rcv threshold */ - - chip_number = channel / CyPORTS_PER_CHIP; - info->u.cyy.base_addr = cinfo->base_addr + - (cy_chip_offset[chip_number] << index); - info->chip_rev = cyy_readb(info, CyGFRCR); - - if (info->chip_rev >= CD1400_REV_J) { - /* It is a CD1400 rev. J or later */ - info->tbpr = baud_bpr_60[13]; /* Tx BPR */ - info->tco = baud_co_60[13]; /* Tx CO */ - info->rbpr = baud_bpr_60[13]; /* Rx BPR */ - info->rco = baud_co_60[13]; /* Rx CO */ - info->rtsdtr_inv = 1; - } else { - info->tbpr = baud_bpr_25[13]; /* Tx BPR */ - info->tco = baud_co_25[13]; /* Tx CO */ - info->rbpr = baud_bpr_25[13]; /* Rx BPR */ - info->rco = baud_co_25[13]; /* Rx CO */ - info->rtsdtr_inv = 0; - } - info->read_status_mask = CyTIMEOUT | CySPECHAR | - CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; - } - - } - -#ifndef CONFIG_CYZ_INTR - if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { - mod_timer(&cyz_timerlist, jiffies + 1); -#ifdef CY_PCI_DEBUG - printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); -#endif - } -#endif - return 0; -} - -/* initialize chips on Cyclom-Y card -- return number of valid - chips (which is number of ports/4) */ -static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, - int index) -{ - unsigned int chip_number; - void __iomem *base_addr; - - cy_writeb(true_base_addr + (Cy_HwReset << index), 0); - /* Cy_HwReset is 0x1400 */ - cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); - /* Cy_ClrIntr is 0x1800 */ - udelay(500L); - - for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; - chip_number++) { - base_addr = - true_base_addr + (cy_chip_offset[chip_number] << index); - mdelay(1); - if (readb(base_addr + (CyCCR << index)) != 0x00) { - /************* - printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", - chip_number, (unsigned long)base_addr); - *************/ - return chip_number; - } - - cy_writeb(base_addr + (CyGFRCR << index), 0); - udelay(10L); - - /* The Cyclom-16Y does not decode address bit 9 and therefore - cannot distinguish between references to chip 0 and a non- - existent chip 4. If the preceding clearing of the supposed - chip 4 GFRCR register appears at chip 0, there is no chip 4 - and this must be a Cyclom-16Y, not a Cyclom-32Ye. - */ - if (chip_number == 4 && readb(true_base_addr + - (cy_chip_offset[0] << index) + - (CyGFRCR << index)) == 0) { - return chip_number; - } - - cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); - mdelay(1); - - if (readb(base_addr + (CyGFRCR << index)) == 0x00) { - /* - printk(" chip #%d at %#6lx is not responding ", - chip_number, (unsigned long)base_addr); - printk("(GFRCR stayed 0)\n", - */ - return chip_number; - } - if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != - 0x40) { - /* - printk(" chip #%d at %#6lx is not valid (GFRCR == " - "%#2x)\n", - chip_number, (unsigned long)base_addr, - base_addr[CyGFRCR<= CD1400_REV_J) { - /* It is a CD1400 rev. J or later */ - /* Impossible to reach 5ms with this chip. - Changed to 2ms instead (f = 500 Hz). */ - cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); - } else { - /* f = 200 Hz */ - cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); - } - - /* - printk(" chip #%d at %#6lx is rev 0x%2x\n", - chip_number, (unsigned long)base_addr, - readb(base_addr+(CyGFRCR< NR_PORTS) { - printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " - "more channels are available. Change NR_PORTS " - "in cyclades.c and recompile kernel.\n", - (unsigned long)cy_isa_address); - iounmap(cy_isa_address); - return nboard; - } - /* fill the next cy_card structure available */ - for (j = 0; j < NR_CARDS; j++) { - if (cy_card[j].base_addr == NULL) - break; - } - if (j == NR_CARDS) { /* no more cy_cards available */ - printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " - "more cards can be used. Change NR_CARDS in " - "cyclades.c and recompile kernel.\n", - (unsigned long)cy_isa_address); - iounmap(cy_isa_address); - return nboard; - } - - /* allocate IRQ */ - if (request_irq(cy_isa_irq, cyy_interrupt, - IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { - printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " - "could not allocate IRQ#%d.\n", - (unsigned long)cy_isa_address, cy_isa_irq); - iounmap(cy_isa_address); - return nboard; - } - - /* set cy_card */ - cy_card[j].base_addr = cy_isa_address; - cy_card[j].ctl_addr.p9050 = NULL; - cy_card[j].irq = (int)cy_isa_irq; - cy_card[j].bus_index = 0; - cy_card[j].first_line = cy_next_channel; - cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; - cy_card[j].nports = cy_isa_nchan; - if (cy_init_card(&cy_card[j])) { - cy_card[j].base_addr = NULL; - free_irq(cy_isa_irq, &cy_card[j]); - iounmap(cy_isa_address); - continue; - } - nboard++; - - printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " - "%d channels starting from port %d\n", - j + 1, (unsigned long)cy_isa_address, - (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), - cy_isa_irq, cy_isa_nchan, cy_next_channel); - - for (j = cy_next_channel; - j < cy_next_channel + cy_isa_nchan; j++) - tty_register_device(cy_serial_driver, j, NULL); - cy_next_channel += cy_isa_nchan; - } - return nboard; -#else - return 0; -#endif /* CONFIG_ISA */ -} /* cy_detect_isa */ - -#ifdef CONFIG_PCI -static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) -{ - unsigned int a; - - for (a = 0; a < size && *str; a++, str++) - if (*str & 0x80) - return -EINVAL; - - for (; a < size; a++, str++) - if (*str) - return -EINVAL; - - return 0; -} - -static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, - unsigned int size) -{ - for (; size > 0; size--) { - cy_writel(fpga, *data++); - udelay(10); - } -} - -static void __devinit plx_init(struct pci_dev *pdev, int irq, - struct RUNTIME_9060 __iomem *addr) -{ - /* Reset PLX */ - cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); - udelay(100L); - cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); - - /* Reload Config. Registers from EEPROM */ - cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); - udelay(100L); - cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); - - /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, - * the IRQ is lost and, thus, we have to re-write it to the PCI config. - * registers. This will remain here until we find a permanent fix. - */ - pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); -} - -static int __devinit __cyz_load_fw(const struct firmware *fw, - const char *name, const u32 mailbox, void __iomem *base, - void __iomem *fpga) -{ - const void *ptr = fw->data; - const struct zfile_header *h = ptr; - const struct zfile_config *c, *cs; - const struct zfile_block *b, *bs; - unsigned int a, tmp, len = fw->size; -#define BAD_FW KERN_ERR "Bad firmware: " - if (len < sizeof(*h)) { - printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); - return -EINVAL; - } - - cs = ptr + h->config_offset; - bs = ptr + h->block_offset; - - if ((void *)(cs + h->n_config) > ptr + len || - (void *)(bs + h->n_blocks) > ptr + len) { - printk(BAD_FW "too short"); - return -EINVAL; - } - - if (cyc_isfwstr(h->name, sizeof(h->name)) || - cyc_isfwstr(h->date, sizeof(h->date))) { - printk(BAD_FW "bad formatted header string\n"); - return -EINVAL; - } - - if (strncmp(name, h->name, sizeof(h->name))) { - printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); - return -EINVAL; - } - - tmp = 0; - for (c = cs; c < cs + h->n_config; c++) { - for (a = 0; a < c->n_blocks; a++) - if (c->block_list[a] > h->n_blocks) { - printk(BAD_FW "bad block ref number in cfgs\n"); - return -EINVAL; - } - if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ - tmp++; - } - if (!tmp) { - printk(BAD_FW "nothing appropriate\n"); - return -EINVAL; - } - - for (b = bs; b < bs + h->n_blocks; b++) - if (b->file_offset + b->size > len) { - printk(BAD_FW "bad block data offset\n"); - return -EINVAL; - } - - /* everything is OK, let's seek'n'load it */ - for (c = cs; c < cs + h->n_config; c++) - if (c->mailbox == mailbox && c->function == 0) - break; - - for (a = 0; a < c->n_blocks; a++) { - b = &bs[c->block_list[a]]; - if (b->type == ZBLOCK_FPGA) { - if (fpga != NULL) - cyz_fpga_copy(fpga, ptr + b->file_offset, - b->size); - } else { - if (base != NULL) - memcpy_toio(base + b->ram_offset, - ptr + b->file_offset, b->size); - } - } -#undef BAD_FW - return 0; -} - -static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, - struct RUNTIME_9060 __iomem *ctl_addr, int irq) -{ - const struct firmware *fw; - struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; - struct CUSTOM_REG __iomem *cust = base_addr; - struct ZFW_CTRL __iomem *pt_zfwctrl; - void __iomem *tmp; - u32 mailbox, status, nchan; - unsigned int i; - int retval; - - retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); - if (retval) { - dev_err(&pdev->dev, "can't get firmware\n"); - goto err; - } - - /* Check whether the firmware is already loaded and running. If - positive, skip this board */ - if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { - u32 cntval = readl(base_addr + 0x190); - - udelay(100); - if (cntval != readl(base_addr + 0x190)) { - /* FW counter is working, FW is running */ - dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " - "Skipping board.\n"); - retval = 0; - goto err_rel; - } - } - - /* start boot */ - cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & - ~0x00030800UL); - - mailbox = readl(&ctl_addr->mail_box_0); - - if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { - /* stops CPU and set window to beginning of RAM */ - cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); - cy_writel(&cust->cpu_stop, 0); - cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); - udelay(100); - } - - plx_init(pdev, irq, ctl_addr); - - if (mailbox != 0) { - /* load FPGA */ - retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, - base_addr); - if (retval) - goto err_rel; - if (!__cyz_fpga_loaded(ctl_addr)) { - dev_err(&pdev->dev, "fw upload successful, but fw is " - "not loaded\n"); - goto err_rel; - } - } - - /* stops CPU and set window to beginning of RAM */ - cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); - cy_writel(&cust->cpu_stop, 0); - cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); - udelay(100); - - /* clear memory */ - for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) - cy_writeb(tmp, 255); - if (mailbox != 0) { - /* set window to last 512K of RAM */ - cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); - for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) - cy_writeb(tmp, 255); - /* set window to beginning of RAM */ - cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); - } - - retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); - release_firmware(fw); - if (retval) - goto err; - - /* finish boot and start boards */ - cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); - cy_writel(&cust->cpu_start, 0); - cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); - i = 0; - while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) - msleep(100); - if (status != ZFIRM_ID) { - if (status == ZFIRM_HLT) { - dev_err(&pdev->dev, "you need an external power supply " - "for this number of ports. Firmware halted and " - "board reset.\n"); - retval = -EIO; - goto err; - } - dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " - "some more time\n", status); - while ((status = readl(&fid->signature)) != ZFIRM_ID && - i++ < 200) - msleep(100); - if (status != ZFIRM_ID) { - dev_err(&pdev->dev, "Board not started in 20 seconds! " - "Giving up. (fid->signature = 0x%x)\n", - status); - dev_info(&pdev->dev, "*** Warning ***: if you are " - "upgrading the FW, please power cycle the " - "system before loading the new FW to the " - "Cyclades-Z.\n"); - - if (__cyz_fpga_loaded(ctl_addr)) - plx_init(pdev, irq, ctl_addr); - - retval = -EIO; - goto err; - } - dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", - i / 10); - } - pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); - - dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", - base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), - base_addr + readl(&fid->zfwctrl_addr)); - - nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); - dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", - readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); - - if (nchan == 0) { - dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " - "check the connection between the Z host card and the " - "serial expanders.\n"); - - if (__cyz_fpga_loaded(ctl_addr)) - plx_init(pdev, irq, ctl_addr); - - dev_info(&pdev->dev, "Null number of ports detected. Board " - "reset.\n"); - retval = 0; - goto err; - } - - cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); - cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); - - /* - Early firmware failed to start looking for commands. - This enables firmware interrupts for those commands. - */ - cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | - (1 << 17)); - cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | - 0x00030800UL); - - return nchan; -err_rel: - release_firmware(fw); -err: - return retval; -} - -static int __devinit cy_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - void __iomem *addr0 = NULL, *addr2 = NULL; - char *card_name = NULL; - u32 uninitialized_var(mailbox); - unsigned int device_id, nchan = 0, card_no, i; - unsigned char plx_ver; - int retval, irq; - - retval = pci_enable_device(pdev); - if (retval) { - dev_err(&pdev->dev, "cannot enable device\n"); - goto err; - } - - /* read PCI configuration area */ - irq = pdev->irq; - device_id = pdev->device & ~PCI_DEVICE_ID_MASK; - -#if defined(__alpha__) - if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ - dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " - "addresses on Alpha systems.\n"); - retval = -EIO; - goto err_dis; - } -#endif - if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { - dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " - "addresses\n"); - retval = -EIO; - goto err_dis; - } - - if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { - dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " - "it...\n"); - pdev->resource[2].flags &= ~IORESOURCE_IO; - } - - retval = pci_request_regions(pdev, "cyclades"); - if (retval) { - dev_err(&pdev->dev, "failed to reserve resources\n"); - goto err_dis; - } - - retval = -EIO; - if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || - device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { - card_name = "Cyclom-Y"; - - addr0 = ioremap_nocache(pci_resource_start(pdev, 0), - CyPCI_Yctl); - if (addr0 == NULL) { - dev_err(&pdev->dev, "can't remap ctl region\n"); - goto err_reg; - } - addr2 = ioremap_nocache(pci_resource_start(pdev, 2), - CyPCI_Ywin); - if (addr2 == NULL) { - dev_err(&pdev->dev, "can't remap base region\n"); - goto err_unmap; - } - - nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); - if (nchan == 0) { - dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " - "Serial-Modules\n"); - goto err_unmap; - } - } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { - struct RUNTIME_9060 __iomem *ctl_addr; - - ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), - CyPCI_Zctl); - if (addr0 == NULL) { - dev_err(&pdev->dev, "can't remap ctl region\n"); - goto err_reg; - } - - /* Disable interrupts on the PLX before resetting it */ - cy_writew(&ctl_addr->intr_ctrl_stat, - readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); - - plx_init(pdev, irq, addr0); - - mailbox = readl(&ctl_addr->mail_box_0); - - addr2 = ioremap_nocache(pci_resource_start(pdev, 2), - mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); - if (addr2 == NULL) { - dev_err(&pdev->dev, "can't remap base region\n"); - goto err_unmap; - } - - if (mailbox == ZE_V1) { - card_name = "Cyclades-Ze"; - } else { - card_name = "Cyclades-8Zo"; -#ifdef CY_PCI_DEBUG - if (mailbox == ZO_V1) { - cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); - dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " - "id %lx, ver %lx\n", (ulong)(0xff & - readl(&((struct CUSTOM_REG *)addr2)-> - fpga_id)), (ulong)(0xff & - readl(&((struct CUSTOM_REG *)addr2)-> - fpga_version))); - cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); - } else { - dev_info(&pdev->dev, "Cyclades-Z/PCI: New " - "Cyclades-Z board. FPGA not loaded\n"); - } -#endif - /* The following clears the firmware id word. This - ensures that the driver will not attempt to talk to - the board until it has been properly initialized. - */ - if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) - cy_writel(addr2 + ID_ADDRESS, 0L); - } - - retval = cyz_load_fw(pdev, addr2, addr0, irq); - if (retval <= 0) - goto err_unmap; - nchan = retval; - } - - if ((cy_next_channel + nchan) > NR_PORTS) { - dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " - "channels are available. Change NR_PORTS in " - "cyclades.c and recompile kernel.\n"); - goto err_unmap; - } - /* fill the next cy_card structure available */ - for (card_no = 0; card_no < NR_CARDS; card_no++) { - if (cy_card[card_no].base_addr == NULL) - break; - } - if (card_no == NR_CARDS) { /* no more cy_cards available */ - dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " - "more cards can be used. Change NR_CARDS in " - "cyclades.c and recompile kernel.\n"); - goto err_unmap; - } - - if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || - device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { - /* allocate IRQ */ - retval = request_irq(irq, cyy_interrupt, - IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); - if (retval) { - dev_err(&pdev->dev, "could not allocate IRQ\n"); - goto err_unmap; - } - cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; - } else { - struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; - struct ZFW_CTRL __iomem *zfw_ctrl; - - zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); - - cy_card[card_no].hw_ver = mailbox; - cy_card[card_no].num_chips = (unsigned int)-1; - cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; -#ifdef CONFIG_CYZ_INTR - /* allocate IRQ only if board has an IRQ */ - if (irq != 0 && irq != 255) { - retval = request_irq(irq, cyz_interrupt, - IRQF_SHARED, "Cyclades-Z", - &cy_card[card_no]); - if (retval) { - dev_err(&pdev->dev, "could not allocate IRQ\n"); - goto err_unmap; - } - } -#endif /* CONFIG_CYZ_INTR */ - } - - /* set cy_card */ - cy_card[card_no].base_addr = addr2; - cy_card[card_no].ctl_addr.p9050 = addr0; - cy_card[card_no].irq = irq; - cy_card[card_no].bus_index = 1; - cy_card[card_no].first_line = cy_next_channel; - cy_card[card_no].nports = nchan; - retval = cy_init_card(&cy_card[card_no]); - if (retval) - goto err_null; - - pci_set_drvdata(pdev, &cy_card[card_no]); - - if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || - device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { - /* enable interrupts in the PCI interface */ - plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; - switch (plx_ver) { - case PLX_9050: - cy_writeb(addr0 + 0x4c, 0x43); - break; - - case PLX_9060: - case PLX_9080: - default: /* Old boards, use PLX_9060 */ - { - struct RUNTIME_9060 __iomem *ctl_addr = addr0; - plx_init(pdev, irq, ctl_addr); - cy_writew(&ctl_addr->intr_ctrl_stat, - readw(&ctl_addr->intr_ctrl_stat) | 0x0900); - break; - } - } - } - - dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " - "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); - for (i = cy_next_channel; i < cy_next_channel + nchan; i++) - tty_register_device(cy_serial_driver, i, &pdev->dev); - cy_next_channel += nchan; - - return 0; -err_null: - cy_card[card_no].base_addr = NULL; - free_irq(irq, &cy_card[card_no]); -err_unmap: - iounmap(addr0); - if (addr2) - iounmap(addr2); -err_reg: - pci_release_regions(pdev); -err_dis: - pci_disable_device(pdev); -err: - return retval; -} - -static void __devexit cy_pci_remove(struct pci_dev *pdev) -{ - struct cyclades_card *cinfo = pci_get_drvdata(pdev); - unsigned int i; - - /* non-Z with old PLX */ - if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == - PLX_9050) - cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); - else -#ifndef CONFIG_CYZ_INTR - if (!cy_is_Z(cinfo)) -#endif - cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, - readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & - ~0x0900); - - iounmap(cinfo->base_addr); - if (cinfo->ctl_addr.p9050) - iounmap(cinfo->ctl_addr.p9050); - if (cinfo->irq -#ifndef CONFIG_CYZ_INTR - && !cy_is_Z(cinfo) -#endif /* CONFIG_CYZ_INTR */ - ) - free_irq(cinfo->irq, cinfo); - pci_release_regions(pdev); - - cinfo->base_addr = NULL; - for (i = cinfo->first_line; i < cinfo->first_line + - cinfo->nports; i++) - tty_unregister_device(cy_serial_driver, i); - cinfo->nports = 0; - kfree(cinfo->ports); -} - -static struct pci_driver cy_pci_driver = { - .name = "cyclades", - .id_table = cy_pci_dev_id, - .probe = cy_pci_probe, - .remove = __devexit_p(cy_pci_remove) -}; -#endif - -static int cyclades_proc_show(struct seq_file *m, void *v) -{ - struct cyclades_port *info; - unsigned int i, j; - __u32 cur_jifs = jiffies; - - seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " - "IdleIn Overruns Ldisc\n"); - - /* Output one line for each known port */ - for (i = 0; i < NR_CARDS; i++) - for (j = 0; j < cy_card[i].nports; j++) { - info = &cy_card[i].ports[j]; - - if (info->port.count) { - /* XXX is the ldisc num worth this? */ - struct tty_struct *tty; - struct tty_ldisc *ld; - int num = 0; - tty = tty_port_tty_get(&info->port); - if (tty) { - ld = tty_ldisc_ref(tty); - if (ld) { - num = ld->ops->num; - tty_ldisc_deref(ld); - } - tty_kref_put(tty); - } - seq_printf(m, "%3d %8lu %10lu %8lu " - "%10lu %8lu %9lu %6d\n", info->line, - (cur_jifs - info->idle_stats.in_use) / - HZ, info->idle_stats.xmit_bytes, - (cur_jifs - info->idle_stats.xmit_idle)/ - HZ, info->idle_stats.recv_bytes, - (cur_jifs - info->idle_stats.recv_idle)/ - HZ, info->idle_stats.overruns, - num); - } else - seq_printf(m, "%3d %8lu %10lu %8lu " - "%10lu %8lu %9lu %6ld\n", - info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); - } - return 0; -} - -static int cyclades_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, cyclades_proc_show, NULL); -} - -static const struct file_operations cyclades_proc_fops = { - .owner = THIS_MODULE, - .open = cyclades_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* The serial driver boot-time initialization code! - Hardware I/O ports are mapped to character special devices on a - first found, first allocated manner. That is, this code searches - for Cyclom cards in the system. As each is found, it is probed - to discover how many chips (and thus how many ports) are present. - These ports are mapped to the tty ports 32 and upward in monotonic - fashion. If an 8-port card is replaced with a 16-port card, the - port mapping on a following card will shift. - - This approach is different from what is used in the other serial - device driver because the Cyclom is more properly a multiplexer, - not just an aggregation of serial ports on one card. - - If there are more cards with more ports than have been - statically allocated above, a warning is printed and the - extra ports are ignored. - */ - -static const struct tty_operations cy_ops = { - .open = cy_open, - .close = cy_close, - .write = cy_write, - .put_char = cy_put_char, - .flush_chars = cy_flush_chars, - .write_room = cy_write_room, - .chars_in_buffer = cy_chars_in_buffer, - .flush_buffer = cy_flush_buffer, - .ioctl = cy_ioctl, - .throttle = cy_throttle, - .unthrottle = cy_unthrottle, - .set_termios = cy_set_termios, - .stop = cy_stop, - .start = cy_start, - .hangup = cy_hangup, - .break_ctl = cy_break, - .wait_until_sent = cy_wait_until_sent, - .tiocmget = cy_tiocmget, - .tiocmset = cy_tiocmset, - .get_icount = cy_get_icount, - .proc_fops = &cyclades_proc_fops, -}; - -static int __init cy_init(void) -{ - unsigned int nboards; - int retval = -ENOMEM; - - cy_serial_driver = alloc_tty_driver(NR_PORTS); - if (!cy_serial_driver) - goto err; - - printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", - __DATE__, __TIME__); - - /* Initialize the tty_driver structure */ - - cy_serial_driver->owner = THIS_MODULE; - cy_serial_driver->driver_name = "cyclades"; - cy_serial_driver->name = "ttyC"; - cy_serial_driver->major = CYCLADES_MAJOR; - cy_serial_driver->minor_start = 0; - cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; - cy_serial_driver->init_termios = tty_std_termios; - cy_serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(cy_serial_driver, &cy_ops); - - retval = tty_register_driver(cy_serial_driver); - if (retval) { - printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); - goto err_frtty; - } - - /* the code below is responsible to find the boards. Each different - type of board has its own detection routine. If a board is found, - the next cy_card structure available is set by the detection - routine. These functions are responsible for checking the - availability of cy_card and cy_port data structures and updating - the cy_next_channel. */ - - /* look for isa boards */ - nboards = cy_detect_isa(); - -#ifdef CONFIG_PCI - /* look for pci boards */ - retval = pci_register_driver(&cy_pci_driver); - if (retval && !nboards) { - tty_unregister_driver(cy_serial_driver); - goto err_frtty; - } -#endif - - return 0; -err_frtty: - put_tty_driver(cy_serial_driver); -err: - return retval; -} /* cy_init */ - -static void __exit cy_cleanup_module(void) -{ - struct cyclades_card *card; - unsigned int i, e1; - -#ifndef CONFIG_CYZ_INTR - del_timer_sync(&cyz_timerlist); -#endif /* CONFIG_CYZ_INTR */ - - e1 = tty_unregister_driver(cy_serial_driver); - if (e1) - printk(KERN_ERR "failed to unregister Cyclades serial " - "driver(%d)\n", e1); - -#ifdef CONFIG_PCI - pci_unregister_driver(&cy_pci_driver); -#endif - - for (i = 0; i < NR_CARDS; i++) { - card = &cy_card[i]; - if (card->base_addr) { - /* clear interrupt */ - cy_writeb(card->base_addr + Cy_ClrIntr, 0); - iounmap(card->base_addr); - if (card->ctl_addr.p9050) - iounmap(card->ctl_addr.p9050); - if (card->irq -#ifndef CONFIG_CYZ_INTR - && !cy_is_Z(card) -#endif /* CONFIG_CYZ_INTR */ - ) - free_irq(card->irq, card); - for (e1 = card->first_line; e1 < card->first_line + - card->nports; e1++) - tty_unregister_device(cy_serial_driver, e1); - kfree(card->ports); - } - } - - put_tty_driver(cy_serial_driver); -} /* cy_cleanup_module */ - -module_init(cy_init); -module_exit(cy_cleanup_module); - -MODULE_LICENSE("GPL"); -MODULE_VERSION(CY_VERSION); -MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); -MODULE_FIRMWARE("cyzfirm.bin"); diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c deleted file mode 100644 index db1cf9c328d8..000000000000 --- a/drivers/char/isicom.c +++ /dev/null @@ -1,1736 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * Original driver code supplied by Multi-Tech - * - * Changes - * 1/9/98 alan@lxorguk.ukuu.org.uk - * Merge to 2.0.x kernel tree - * Obtain and use official major/minors - * Loader switched to a misc device - * (fixed range check bug as a side effect) - * Printk clean up - * 9/12/98 alan@lxorguk.ukuu.org.uk - * Rough port to 2.1.x - * - * 10/6/99 sameer Merged the ISA and PCI drivers to - * a new unified driver. - * - * 3/9/99 sameer Added support for ISI4616 cards. - * - * 16/9/99 sameer We do not force RTS low anymore. - * This is to prevent the firmware - * from getting confused. - * - * 26/10/99 sameer Cosmetic changes:The driver now - * dumps the Port Count information - * along with I/O address and IRQ. - * - * 13/12/99 sameer Fixed the problem with IRQ sharing. - * - * 10/5/00 sameer Fixed isicom_shutdown_board() - * to not lower DTR on all the ports - * when the last port on the card is - * closed. - * - * 10/5/00 sameer Signal mask setup command added - * to isicom_setup_port and - * isicom_shutdown_port. - * - * 24/5/00 sameer The driver is now SMP aware. - * - * - * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem - * - * - * 03/01/01 anil .s Added support for resetting the - * internal modems on ISI cards. - * - * 08/02/01 anil .s Upgraded the driver for kernel - * 2.4.x - * - * 11/04/01 Kevin Fixed firmware load problem with - * ISIHP-4X card - * - * 30/04/01 anil .s Fixed the remote login through - * ISI port problem. Now the link - * does not go down before password - * prompt. - * - * 03/05/01 anil .s Fixed the problem with IRQ sharing - * among ISI-PCI cards. - * - * 03/05/01 anil .s Added support to display the version - * info during insmod as well as module - * listing by lsmod. - * - * 10/05/01 anil .s Done the modifications to the source - * file and Install script so that the - * same installation can be used for - * 2.2.x and 2.4.x kernel. - * - * 06/06/01 anil .s Now we drop both dtr and rts during - * shutdown_port as well as raise them - * during isicom_config_port. - * - * 09/06/01 acme@conectiva.com.br use capable, not suser, do - * restore_flags on failure in - * isicom_send_break, verify put_user - * result - * - * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps - * Baud index extended to 21 - * - * 20/03/03 ranjeeth Made to work for Linux Advanced server. - * Taken care of license warning. - * - * 10/12/03 Ravindra Made to work for Fedora Core 1 of - * Red Hat Distribution - * - * 06/01/05 Alan Cox Merged the ISI and base kernel strands - * into a single 2.6 driver - * - * *********************************************************** - * - * To use this driver you also need the support package. You - * can find this in RPM format on - * ftp://ftp.linux.org.uk/pub/linux/alan - * - * You can find the original tools for this direct from Multitech - * ftp://ftp.multitech.com/ISI-Cards/ - * - * Having installed the cards the module options (/etc/modprobe.conf) - * - * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 - * - * Omit those entries for boards you don't have installed. - * - * TODO - * Merge testing - * 64-bit verification - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include - -#include - -#define InterruptTheCard(base) outw(0, (base) + 0xc) -#define ClearInterrupt(base) inw((base) + 0x0a) - -#ifdef DEBUG -#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) -#else -#define isicom_paranoia_check(a, b, c) 0 -#endif - -static int isicom_probe(struct pci_dev *, const struct pci_device_id *); -static void __devexit isicom_remove(struct pci_dev *); - -static struct pci_device_id isicom_pci_tbl[] = { - { PCI_DEVICE(VENDOR_ID, 0x2028) }, - { PCI_DEVICE(VENDOR_ID, 0x2051) }, - { PCI_DEVICE(VENDOR_ID, 0x2052) }, - { PCI_DEVICE(VENDOR_ID, 0x2053) }, - { PCI_DEVICE(VENDOR_ID, 0x2054) }, - { PCI_DEVICE(VENDOR_ID, 0x2055) }, - { PCI_DEVICE(VENDOR_ID, 0x2056) }, - { PCI_DEVICE(VENDOR_ID, 0x2057) }, - { PCI_DEVICE(VENDOR_ID, 0x2058) }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); - -static struct pci_driver isicom_driver = { - .name = "isicom", - .id_table = isicom_pci_tbl, - .probe = isicom_probe, - .remove = __devexit_p(isicom_remove) -}; - -static int prev_card = 3; /* start servicing isi_card[0] */ -static struct tty_driver *isicom_normal; - -static void isicom_tx(unsigned long _data); -static void isicom_start(struct tty_struct *tty); - -static DEFINE_TIMER(tx, isicom_tx, 0, 0); - -/* baud index mappings from linux defns to isi */ - -static signed char linuxb_to_isib[] = { - -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 -}; - -struct isi_board { - unsigned long base; - int irq; - unsigned char port_count; - unsigned short status; - unsigned short port_status; /* each bit for each port */ - unsigned short shift_count; - struct isi_port *ports; - signed char count; - spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ - unsigned long flags; - unsigned int index; -}; - -struct isi_port { - unsigned short magic; - struct tty_port port; - u16 channel; - u16 status; - struct isi_board *card; - unsigned char *xmit_buf; - int xmit_head; - int xmit_tail; - int xmit_cnt; -}; - -static struct isi_board isi_card[BOARD_COUNT]; -static struct isi_port isi_ports[PORT_COUNT]; - -/* - * Locking functions for card level locking. We need to own both - * the kernel lock for the card and have the card in a position that - * it wants to talk. - */ - -static inline int WaitTillCardIsFree(unsigned long base) -{ - unsigned int count = 0; - unsigned int a = in_atomic(); /* do we run under spinlock? */ - - while (!(inw(base + 0xe) & 0x1) && count++ < 100) - if (a) - mdelay(1); - else - msleep(1); - - return !(inw(base + 0xe) & 0x1); -} - -static int lock_card(struct isi_board *card) -{ - unsigned long base = card->base; - unsigned int retries, a; - - for (retries = 0; retries < 10; retries++) { - spin_lock_irqsave(&card->card_lock, card->flags); - for (a = 0; a < 10; a++) { - if (inw(base + 0xe) & 0x1) - return 1; - udelay(10); - } - spin_unlock_irqrestore(&card->card_lock, card->flags); - msleep(10); - } - pr_warning("Failed to lock Card (0x%lx)\n", card->base); - - return 0; /* Failed to acquire the card! */ -} - -static void unlock_card(struct isi_board *card) -{ - spin_unlock_irqrestore(&card->card_lock, card->flags); -} - -/* - * ISI Card specific ops ... - */ - -/* card->lock HAS to be held */ -static void raise_dtr(struct isi_port *port) -{ - struct isi_board *card = port->card; - unsigned long base = card->base; - u16 channel = port->channel; - - if (WaitTillCardIsFree(base)) - return; - - outw(0x8000 | (channel << card->shift_count) | 0x02, base); - outw(0x0504, base); - InterruptTheCard(base); - port->status |= ISI_DTR; -} - -/* card->lock HAS to be held */ -static inline void drop_dtr(struct isi_port *port) -{ - struct isi_board *card = port->card; - unsigned long base = card->base; - u16 channel = port->channel; - - if (WaitTillCardIsFree(base)) - return; - - outw(0x8000 | (channel << card->shift_count) | 0x02, base); - outw(0x0404, base); - InterruptTheCard(base); - port->status &= ~ISI_DTR; -} - -/* card->lock HAS to be held */ -static inline void raise_rts(struct isi_port *port) -{ - struct isi_board *card = port->card; - unsigned long base = card->base; - u16 channel = port->channel; - - if (WaitTillCardIsFree(base)) - return; - - outw(0x8000 | (channel << card->shift_count) | 0x02, base); - outw(0x0a04, base); - InterruptTheCard(base); - port->status |= ISI_RTS; -} - -/* card->lock HAS to be held */ -static inline void drop_rts(struct isi_port *port) -{ - struct isi_board *card = port->card; - unsigned long base = card->base; - u16 channel = port->channel; - - if (WaitTillCardIsFree(base)) - return; - - outw(0x8000 | (channel << card->shift_count) | 0x02, base); - outw(0x0804, base); - InterruptTheCard(base); - port->status &= ~ISI_RTS; -} - -/* card->lock MUST NOT be held */ - -static void isicom_dtr_rts(struct tty_port *port, int on) -{ - struct isi_port *ip = container_of(port, struct isi_port, port); - struct isi_board *card = ip->card; - unsigned long base = card->base; - u16 channel = ip->channel; - - if (!lock_card(card)) - return; - - if (on) { - outw(0x8000 | (channel << card->shift_count) | 0x02, base); - outw(0x0f04, base); - InterruptTheCard(base); - ip->status |= (ISI_DTR | ISI_RTS); - } else { - outw(0x8000 | (channel << card->shift_count) | 0x02, base); - outw(0x0C04, base); - InterruptTheCard(base); - ip->status &= ~(ISI_DTR | ISI_RTS); - } - unlock_card(card); -} - -/* card->lock HAS to be held */ -static void drop_dtr_rts(struct isi_port *port) -{ - struct isi_board *card = port->card; - unsigned long base = card->base; - u16 channel = port->channel; - - if (WaitTillCardIsFree(base)) - return; - - outw(0x8000 | (channel << card->shift_count) | 0x02, base); - outw(0x0c04, base); - InterruptTheCard(base); - port->status &= ~(ISI_RTS | ISI_DTR); -} - -/* - * ISICOM Driver specific routines ... - * - */ - -static inline int __isicom_paranoia_check(struct isi_port const *port, - char *name, const char *routine) -{ - if (!port) { - pr_warning("Warning: bad isicom magic for dev %s in %s.\n", - name, routine); - return 1; - } - if (port->magic != ISICOM_MAGIC) { - pr_warning("Warning: NULL isicom port for dev %s in %s.\n", - name, routine); - return 1; - } - - return 0; -} - -/* - * Transmitter. - * - * We shovel data into the card buffers on a regular basis. The card - * will do the rest of the work for us. - */ - -static void isicom_tx(unsigned long _data) -{ - unsigned long flags, base; - unsigned int retries; - short count = (BOARD_COUNT-1), card; - short txcount, wrd, residue, word_count, cnt; - struct isi_port *port; - struct tty_struct *tty; - - /* find next active board */ - card = (prev_card + 1) & 0x0003; - while (count-- > 0) { - if (isi_card[card].status & BOARD_ACTIVE) - break; - card = (card + 1) & 0x0003; - } - if (!(isi_card[card].status & BOARD_ACTIVE)) - goto sched_again; - - prev_card = card; - - count = isi_card[card].port_count; - port = isi_card[card].ports; - base = isi_card[card].base; - - spin_lock_irqsave(&isi_card[card].card_lock, flags); - for (retries = 0; retries < 100; retries++) { - if (inw(base + 0xe) & 0x1) - break; - udelay(2); - } - if (retries >= 100) - goto unlock; - - tty = tty_port_tty_get(&port->port); - if (tty == NULL) - goto put_unlock; - - for (; count > 0; count--, port++) { - /* port not active or tx disabled to force flow control */ - if (!(port->port.flags & ASYNC_INITIALIZED) || - !(port->status & ISI_TXOK)) - continue; - - txcount = min_t(short, TX_SIZE, port->xmit_cnt); - if (txcount <= 0 || tty->stopped || tty->hw_stopped) - continue; - - if (!(inw(base + 0x02) & (1 << port->channel))) - continue; - - pr_debug("txing %d bytes, port%d.\n", - txcount, port->channel + 1); - outw((port->channel << isi_card[card].shift_count) | txcount, - base); - residue = NO; - wrd = 0; - while (1) { - cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE - - port->xmit_tail)); - if (residue == YES) { - residue = NO; - if (cnt > 0) { - wrd |= (port->port.xmit_buf[port->xmit_tail] - << 8); - port->xmit_tail = (port->xmit_tail + 1) - & (SERIAL_XMIT_SIZE - 1); - port->xmit_cnt--; - txcount--; - cnt--; - outw(wrd, base); - } else { - outw(wrd, base); - break; - } - } - if (cnt <= 0) - break; - word_count = cnt >> 1; - outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); - port->xmit_tail = (port->xmit_tail - + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); - txcount -= (word_count << 1); - port->xmit_cnt -= (word_count << 1); - if (cnt & 0x0001) { - residue = YES; - wrd = port->port.xmit_buf[port->xmit_tail]; - port->xmit_tail = (port->xmit_tail + 1) - & (SERIAL_XMIT_SIZE - 1); - port->xmit_cnt--; - txcount--; - } - } - - InterruptTheCard(base); - if (port->xmit_cnt <= 0) - port->status &= ~ISI_TXOK; - if (port->xmit_cnt <= WAKEUP_CHARS) - tty_wakeup(tty); - } - -put_unlock: - tty_kref_put(tty); -unlock: - spin_unlock_irqrestore(&isi_card[card].card_lock, flags); - /* schedule another tx for hopefully in about 10ms */ -sched_again: - mod_timer(&tx, jiffies + msecs_to_jiffies(10)); -} - -/* - * Main interrupt handler routine - */ - -static irqreturn_t isicom_interrupt(int irq, void *dev_id) -{ - struct isi_board *card = dev_id; - struct isi_port *port; - struct tty_struct *tty; - unsigned long base; - u16 header, word_count, count, channel; - short byte_count; - unsigned char *rp; - - if (!card || !(card->status & FIRMWARE_LOADED)) - return IRQ_NONE; - - base = card->base; - - /* did the card interrupt us? */ - if (!(inw(base + 0x0e) & 0x02)) - return IRQ_NONE; - - spin_lock(&card->card_lock); - - /* - * disable any interrupts from the PCI card and lower the - * interrupt line - */ - outw(0x8000, base+0x04); - ClearInterrupt(base); - - inw(base); /* get the dummy word out */ - header = inw(base); - channel = (header & 0x7800) >> card->shift_count; - byte_count = header & 0xff; - - if (channel + 1 > card->port_count) { - pr_warning("%s(0x%lx): %d(channel) > port_count.\n", - __func__, base, channel+1); - outw(0x0000, base+0x04); /* enable interrupts */ - spin_unlock(&card->card_lock); - return IRQ_HANDLED; - } - port = card->ports + channel; - if (!(port->port.flags & ASYNC_INITIALIZED)) { - outw(0x0000, base+0x04); /* enable interrupts */ - spin_unlock(&card->card_lock); - return IRQ_HANDLED; - } - - tty = tty_port_tty_get(&port->port); - if (tty == NULL) { - word_count = byte_count >> 1; - while (byte_count > 1) { - inw(base); - byte_count -= 2; - } - if (byte_count & 0x01) - inw(base); - outw(0x0000, base+0x04); /* enable interrupts */ - spin_unlock(&card->card_lock); - return IRQ_HANDLED; - } - - if (header & 0x8000) { /* Status Packet */ - header = inw(base); - switch (header & 0xff) { - case 0: /* Change in EIA signals */ - if (port->port.flags & ASYNC_CHECK_CD) { - if (port->status & ISI_DCD) { - if (!(header & ISI_DCD)) { - /* Carrier has been lost */ - pr_debug("%s: DCD->low.\n", - __func__); - port->status &= ~ISI_DCD; - tty_hangup(tty); - } - } else if (header & ISI_DCD) { - /* Carrier has been detected */ - pr_debug("%s: DCD->high.\n", - __func__); - port->status |= ISI_DCD; - wake_up_interruptible(&port->port.open_wait); - } - } else { - if (header & ISI_DCD) - port->status |= ISI_DCD; - else - port->status &= ~ISI_DCD; - } - - if (port->port.flags & ASYNC_CTS_FLOW) { - if (tty->hw_stopped) { - if (header & ISI_CTS) { - port->port.tty->hw_stopped = 0; - /* start tx ing */ - port->status |= (ISI_TXOK - | ISI_CTS); - tty_wakeup(tty); - } - } else if (!(header & ISI_CTS)) { - tty->hw_stopped = 1; - /* stop tx ing */ - port->status &= ~(ISI_TXOK | ISI_CTS); - } - } else { - if (header & ISI_CTS) - port->status |= ISI_CTS; - else - port->status &= ~ISI_CTS; - } - - if (header & ISI_DSR) - port->status |= ISI_DSR; - else - port->status &= ~ISI_DSR; - - if (header & ISI_RI) - port->status |= ISI_RI; - else - port->status &= ~ISI_RI; - - break; - - case 1: /* Received Break !!! */ - tty_insert_flip_char(tty, 0, TTY_BREAK); - if (port->port.flags & ASYNC_SAK) - do_SAK(tty); - tty_flip_buffer_push(tty); - break; - - case 2: /* Statistics */ - pr_debug("%s: stats!!!\n", __func__); - break; - - default: - pr_debug("%s: Unknown code in status packet.\n", - __func__); - break; - } - } else { /* Data Packet */ - - count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); - pr_debug("%s: Can rx %d of %d bytes.\n", - __func__, count, byte_count); - word_count = count >> 1; - insw(base, rp, word_count); - byte_count -= (word_count << 1); - if (count & 0x0001) { - tty_insert_flip_char(tty, inw(base) & 0xff, - TTY_NORMAL); - byte_count -= 2; - } - if (byte_count > 0) { - pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n", - __func__, base, channel + 1); - /* drain out unread xtra data */ - while (byte_count > 0) { - inw(base); - byte_count -= 2; - } - } - tty_flip_buffer_push(tty); - } - outw(0x0000, base+0x04); /* enable interrupts */ - spin_unlock(&card->card_lock); - tty_kref_put(tty); - - return IRQ_HANDLED; -} - -static void isicom_config_port(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - unsigned long baud; - unsigned long base = card->base; - u16 channel_setup, channel = port->channel, - shift_count = card->shift_count; - unsigned char flow_ctrl; - - /* FIXME: Switch to new tty baud API */ - baud = C_BAUD(tty); - if (baud & CBAUDEX) { - baud &= ~CBAUDEX; - - /* if CBAUDEX bit is on and the baud is set to either 50 or 75 - * then the card is programmed for 57.6Kbps or 115Kbps - * respectively. - */ - - /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ - if (baud < 1 || baud > 4) - tty->termios->c_cflag &= ~CBAUDEX; - else - baud += 15; - } - if (baud == 15) { - - /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set - * by the set_serial_info ioctl ... this is done by - * the 'setserial' utility. - */ - - if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - baud++; /* 57.6 Kbps */ - if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - baud += 2; /* 115 Kbps */ - if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - baud += 3; /* 230 kbps*/ - if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - baud += 4; /* 460 kbps*/ - } - if (linuxb_to_isib[baud] == -1) { - /* hang up */ - drop_dtr(port); - return; - } else - raise_dtr(port); - - if (WaitTillCardIsFree(base) == 0) { - outw(0x8000 | (channel << shift_count) | 0x03, base); - outw(linuxb_to_isib[baud] << 8 | 0x03, base); - channel_setup = 0; - switch (C_CSIZE(tty)) { - case CS5: - channel_setup |= ISICOM_CS5; - break; - case CS6: - channel_setup |= ISICOM_CS6; - break; - case CS7: - channel_setup |= ISICOM_CS7; - break; - case CS8: - channel_setup |= ISICOM_CS8; - break; - } - - if (C_CSTOPB(tty)) - channel_setup |= ISICOM_2SB; - if (C_PARENB(tty)) { - channel_setup |= ISICOM_EVPAR; - if (C_PARODD(tty)) - channel_setup |= ISICOM_ODPAR; - } - outw(channel_setup, base); - InterruptTheCard(base); - } - if (C_CLOCAL(tty)) - port->port.flags &= ~ASYNC_CHECK_CD; - else - port->port.flags |= ASYNC_CHECK_CD; - - /* flow control settings ...*/ - flow_ctrl = 0; - port->port.flags &= ~ASYNC_CTS_FLOW; - if (C_CRTSCTS(tty)) { - port->port.flags |= ASYNC_CTS_FLOW; - flow_ctrl |= ISICOM_CTSRTS; - } - if (I_IXON(tty)) - flow_ctrl |= ISICOM_RESPOND_XONXOFF; - if (I_IXOFF(tty)) - flow_ctrl |= ISICOM_INITIATE_XONXOFF; - - if (WaitTillCardIsFree(base) == 0) { - outw(0x8000 | (channel << shift_count) | 0x04, base); - outw(flow_ctrl << 8 | 0x05, base); - outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); - InterruptTheCard(base); - } - - /* rx enabled -> enable port for rx on the card */ - if (C_CREAD(tty)) { - card->port_status |= (1 << channel); - outw(card->port_status, base + 0x02); - } -} - -/* open et all */ - -static inline void isicom_setup_board(struct isi_board *bp) -{ - int channel; - struct isi_port *port; - - bp->count++; - if (!(bp->status & BOARD_INIT)) { - port = bp->ports; - for (channel = 0; channel < bp->port_count; channel++, port++) - drop_dtr_rts(port); - } - bp->status |= BOARD_ACTIVE | BOARD_INIT; -} - -/* Activate and thus setup board are protected from races against shutdown - by the tty_port mutex */ - -static int isicom_activate(struct tty_port *tport, struct tty_struct *tty) -{ - struct isi_port *port = container_of(tport, struct isi_port, port); - struct isi_board *card = port->card; - unsigned long flags; - - if (tty_port_alloc_xmit_buf(tport) < 0) - return -ENOMEM; - - spin_lock_irqsave(&card->card_lock, flags); - isicom_setup_board(card); - - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - - /* discard any residual data */ - if (WaitTillCardIsFree(card->base) == 0) { - outw(0x8000 | (port->channel << card->shift_count) | 0x02, - card->base); - outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); - InterruptTheCard(card->base); - } - isicom_config_port(tty); - spin_unlock_irqrestore(&card->card_lock, flags); - - return 0; -} - -static int isicom_carrier_raised(struct tty_port *port) -{ - struct isi_port *ip = container_of(port, struct isi_port, port); - return (ip->status & ISI_DCD)?1 : 0; -} - -static struct tty_port *isicom_find_port(struct tty_struct *tty) -{ - struct isi_port *port; - struct isi_board *card; - unsigned int board; - int line = tty->index; - - if (line < 0 || line > PORT_COUNT-1) - return NULL; - board = BOARD(line); - card = &isi_card[board]; - - if (!(card->status & FIRMWARE_LOADED)) - return NULL; - - /* open on a port greater than the port count for the card !!! */ - if (line > ((board * 16) + card->port_count - 1)) - return NULL; - - port = &isi_ports[line]; - if (isicom_paranoia_check(port, tty->name, "isicom_open")) - return NULL; - - return &port->port; -} - -static int isicom_open(struct tty_struct *tty, struct file *filp) -{ - struct isi_port *port; - struct tty_port *tport; - - tport = isicom_find_port(tty); - if (tport == NULL) - return -ENODEV; - port = container_of(tport, struct isi_port, port); - - tty->driver_data = port; - return tty_port_open(tport, tty, filp); -} - -/* close et all */ - -/* card->lock HAS to be held */ -static void isicom_shutdown_port(struct isi_port *port) -{ - struct isi_board *card = port->card; - - if (--card->count < 0) { - pr_debug("%s: bad board(0x%lx) count %d.\n", - __func__, card->base, card->count); - card->count = 0; - } - /* last port was closed, shutdown that board too */ - if (!card->count) - card->status &= BOARD_ACTIVE; -} - -static void isicom_flush_buffer(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - unsigned long flags; - - if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) - return; - - spin_lock_irqsave(&card->card_lock, flags); - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore(&card->card_lock, flags); - - tty_wakeup(tty); -} - -static void isicom_shutdown(struct tty_port *port) -{ - struct isi_port *ip = container_of(port, struct isi_port, port); - struct isi_board *card = ip->card; - unsigned long flags; - - /* indicate to the card that no more data can be received - on this port */ - spin_lock_irqsave(&card->card_lock, flags); - card->port_status &= ~(1 << ip->channel); - outw(card->port_status, card->base + 0x02); - isicom_shutdown_port(ip); - spin_unlock_irqrestore(&card->card_lock, flags); - tty_port_free_xmit_buf(port); -} - -static void isicom_close(struct tty_struct *tty, struct file *filp) -{ - struct isi_port *ip = tty->driver_data; - struct tty_port *port; - - if (ip == NULL) - return; - - port = &ip->port; - if (isicom_paranoia_check(ip, tty->name, "isicom_close")) - return; - tty_port_close(port, tty, filp); -} - -/* write et all */ -static int isicom_write(struct tty_struct *tty, const unsigned char *buf, - int count) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - unsigned long flags; - int cnt, total = 0; - - if (isicom_paranoia_check(port, tty->name, "isicom_write")) - return 0; - - spin_lock_irqsave(&card->card_lock, flags); - - while (1) { - cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - - 1, SERIAL_XMIT_SIZE - port->xmit_head)); - if (cnt <= 0) - break; - - memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); - port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - - 1); - port->xmit_cnt += cnt; - buf += cnt; - count -= cnt; - total += cnt; - } - if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) - port->status |= ISI_TXOK; - spin_unlock_irqrestore(&card->card_lock, flags); - return total; -} - -/* put_char et all */ -static int isicom_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - unsigned long flags; - - if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) - return 0; - - spin_lock_irqsave(&card->card_lock, flags); - if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { - spin_unlock_irqrestore(&card->card_lock, flags); - return 0; - } - - port->port.xmit_buf[port->xmit_head++] = ch; - port->xmit_head &= (SERIAL_XMIT_SIZE - 1); - port->xmit_cnt++; - spin_unlock_irqrestore(&card->card_lock, flags); - return 1; -} - -/* flush_chars et all */ -static void isicom_flush_chars(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - - if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) - return; - - if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || - !port->port.xmit_buf) - return; - - /* this tells the transmitter to consider this port for - data output to the card ... that's the best we can do. */ - port->status |= ISI_TXOK; -} - -/* write_room et all */ -static int isicom_write_room(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - int free; - - if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) - return 0; - - free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; - if (free < 0) - free = 0; - return free; -} - -/* chars_in_buffer et all */ -static int isicom_chars_in_buffer(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) - return 0; - return port->xmit_cnt; -} - -/* ioctl et all */ -static int isicom_send_break(struct tty_struct *tty, int length) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - unsigned long base = card->base; - - if (length == -1) - return -EOPNOTSUPP; - - if (!lock_card(card)) - return -EINVAL; - - outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); - outw((length & 0xff) << 8 | 0x00, base); - outw((length & 0xff00), base); - InterruptTheCard(base); - - unlock_card(card); - return 0; -} - -static int isicom_tiocmget(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - /* just send the port status */ - u16 status = port->status; - - if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) - return -ENODEV; - - return ((status & ISI_RTS) ? TIOCM_RTS : 0) | - ((status & ISI_DTR) ? TIOCM_DTR : 0) | - ((status & ISI_DCD) ? TIOCM_CAR : 0) | - ((status & ISI_DSR) ? TIOCM_DSR : 0) | - ((status & ISI_CTS) ? TIOCM_CTS : 0) | - ((status & ISI_RI ) ? TIOCM_RI : 0); -} - -static int isicom_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct isi_port *port = tty->driver_data; - unsigned long flags; - - if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) - return -ENODEV; - - spin_lock_irqsave(&port->card->card_lock, flags); - if (set & TIOCM_RTS) - raise_rts(port); - if (set & TIOCM_DTR) - raise_dtr(port); - - if (clear & TIOCM_RTS) - drop_rts(port); - if (clear & TIOCM_DTR) - drop_dtr(port); - spin_unlock_irqrestore(&port->card->card_lock, flags); - - return 0; -} - -static int isicom_set_serial_info(struct tty_struct *tty, - struct serial_struct __user *info) -{ - struct isi_port *port = tty->driver_data; - struct serial_struct newinfo; - int reconfig_port; - - if (copy_from_user(&newinfo, info, sizeof(newinfo))) - return -EFAULT; - - mutex_lock(&port->port.mutex); - reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != - (newinfo.flags & ASYNC_SPD_MASK)); - - if (!capable(CAP_SYS_ADMIN)) { - if ((newinfo.close_delay != port->port.close_delay) || - (newinfo.closing_wait != port->port.closing_wait) || - ((newinfo.flags & ~ASYNC_USR_MASK) != - (port->port.flags & ~ASYNC_USR_MASK))) { - mutex_unlock(&port->port.mutex); - return -EPERM; - } - port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | - (newinfo.flags & ASYNC_USR_MASK)); - } else { - port->port.close_delay = newinfo.close_delay; - port->port.closing_wait = newinfo.closing_wait; - port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | - (newinfo.flags & ASYNC_FLAGS)); - } - if (reconfig_port) { - unsigned long flags; - spin_lock_irqsave(&port->card->card_lock, flags); - isicom_config_port(tty); - spin_unlock_irqrestore(&port->card->card_lock, flags); - } - mutex_unlock(&port->port.mutex); - return 0; -} - -static int isicom_get_serial_info(struct isi_port *port, - struct serial_struct __user *info) -{ - struct serial_struct out_info; - - mutex_lock(&port->port.mutex); - memset(&out_info, 0, sizeof(out_info)); -/* out_info.type = ? */ - out_info.line = port - isi_ports; - out_info.port = port->card->base; - out_info.irq = port->card->irq; - out_info.flags = port->port.flags; -/* out_info.baud_base = ? */ - out_info.close_delay = port->port.close_delay; - out_info.closing_wait = port->port.closing_wait; - mutex_unlock(&port->port.mutex); - if (copy_to_user(info, &out_info, sizeof(out_info))) - return -EFAULT; - return 0; -} - -static int isicom_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct isi_port *port = tty->driver_data; - void __user *argp = (void __user *)arg; - - if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) - return -ENODEV; - - switch (cmd) { - case TIOCGSERIAL: - return isicom_get_serial_info(port, argp); - - case TIOCSSERIAL: - return isicom_set_serial_info(tty, argp); - - default: - return -ENOIOCTLCMD; - } - return 0; -} - -/* set_termios et all */ -static void isicom_set_termios(struct tty_struct *tty, - struct ktermios *old_termios) -{ - struct isi_port *port = tty->driver_data; - unsigned long flags; - - if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) - return; - - if (tty->termios->c_cflag == old_termios->c_cflag && - tty->termios->c_iflag == old_termios->c_iflag) - return; - - spin_lock_irqsave(&port->card->card_lock, flags); - isicom_config_port(tty); - spin_unlock_irqrestore(&port->card->card_lock, flags); - - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - isicom_start(tty); - } -} - -/* throttle et all */ -static void isicom_throttle(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - - if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) - return; - - /* tell the card that this port cannot handle any more data for now */ - card->port_status &= ~(1 << port->channel); - outw(card->port_status, card->base + 0x02); -} - -/* unthrottle et all */ -static void isicom_unthrottle(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - struct isi_board *card = port->card; - - if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) - return; - - /* tell the card that this port is ready to accept more data */ - card->port_status |= (1 << port->channel); - outw(card->port_status, card->base + 0x02); -} - -/* stop et all */ -static void isicom_stop(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - - if (isicom_paranoia_check(port, tty->name, "isicom_stop")) - return; - - /* this tells the transmitter not to consider this port for - data output to the card. */ - port->status &= ~ISI_TXOK; -} - -/* start et all */ -static void isicom_start(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - - if (isicom_paranoia_check(port, tty->name, "isicom_start")) - return; - - /* this tells the transmitter to consider this port for - data output to the card. */ - port->status |= ISI_TXOK; -} - -static void isicom_hangup(struct tty_struct *tty) -{ - struct isi_port *port = tty->driver_data; - - if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) - return; - tty_port_hangup(&port->port); -} - - -/* - * Driver init and deinit functions - */ - -static const struct tty_operations isicom_ops = { - .open = isicom_open, - .close = isicom_close, - .write = isicom_write, - .put_char = isicom_put_char, - .flush_chars = isicom_flush_chars, - .write_room = isicom_write_room, - .chars_in_buffer = isicom_chars_in_buffer, - .ioctl = isicom_ioctl, - .set_termios = isicom_set_termios, - .throttle = isicom_throttle, - .unthrottle = isicom_unthrottle, - .stop = isicom_stop, - .start = isicom_start, - .hangup = isicom_hangup, - .flush_buffer = isicom_flush_buffer, - .tiocmget = isicom_tiocmget, - .tiocmset = isicom_tiocmset, - .break_ctl = isicom_send_break, -}; - -static const struct tty_port_operations isicom_port_ops = { - .carrier_raised = isicom_carrier_raised, - .dtr_rts = isicom_dtr_rts, - .activate = isicom_activate, - .shutdown = isicom_shutdown, -}; - -static int __devinit reset_card(struct pci_dev *pdev, - const unsigned int card, unsigned int *signature) -{ - struct isi_board *board = pci_get_drvdata(pdev); - unsigned long base = board->base; - unsigned int sig, portcount = 0; - int retval = 0; - - dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, - base); - - inw(base + 0x8); - - msleep(10); - - outw(0, base + 0x8); /* Reset */ - - msleep(1000); - - sig = inw(base + 0x4) & 0xff; - - if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && - sig != 0xee) { - dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " - "bad I/O Port Address 0x%lx).\n", card + 1, base); - dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); - retval = -EIO; - goto end; - } - - msleep(10); - - portcount = inw(base + 0x2); - if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && - portcount != 8 && portcount != 16)) { - dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", - card + 1); - retval = -EIO; - goto end; - } - - switch (sig) { - case 0xa5: - case 0xbb: - case 0xdd: - board->port_count = (portcount == 4) ? 4 : 8; - board->shift_count = 12; - break; - case 0xcc: - case 0xee: - board->port_count = 16; - board->shift_count = 11; - break; - } - dev_info(&pdev->dev, "-Done\n"); - *signature = sig; - -end: - return retval; -} - -static int __devinit load_firmware(struct pci_dev *pdev, - const unsigned int index, const unsigned int signature) -{ - struct isi_board *board = pci_get_drvdata(pdev); - const struct firmware *fw; - unsigned long base = board->base; - unsigned int a; - u16 word_count, status; - int retval = -EIO; - char *name; - u8 *data; - - struct stframe { - u16 addr; - u16 count; - u8 data[0]; - } *frame; - - switch (signature) { - case 0xa5: - name = "isi608.bin"; - break; - case 0xbb: - name = "isi608em.bin"; - break; - case 0xcc: - name = "isi616em.bin"; - break; - case 0xdd: - name = "isi4608.bin"; - break; - case 0xee: - name = "isi4616.bin"; - break; - default: - dev_err(&pdev->dev, "Unknown signature.\n"); - goto end; - } - - retval = request_firmware(&fw, name, &pdev->dev); - if (retval) - goto end; - - retval = -EIO; - - for (frame = (struct stframe *)fw->data; - frame < (struct stframe *)(fw->data + fw->size); - frame = (struct stframe *)((u8 *)(frame + 1) + - frame->count)) { - if (WaitTillCardIsFree(base)) - goto errrelfw; - - outw(0xf0, base); /* start upload sequence */ - outw(0x00, base); - outw(frame->addr, base); /* lsb of address */ - - word_count = frame->count / 2 + frame->count % 2; - outw(word_count, base); - InterruptTheCard(base); - - udelay(100); /* 0x2f */ - - if (WaitTillCardIsFree(base)) - goto errrelfw; - - status = inw(base + 0x4); - if (status != 0) { - dev_warn(&pdev->dev, "Card%d rejected load header:\n" - "Address:0x%x\n" - "Count:0x%x\n" - "Status:0x%x\n", - index + 1, frame->addr, frame->count, status); - goto errrelfw; - } - outsw(base, frame->data, word_count); - - InterruptTheCard(base); - - udelay(50); /* 0x0f */ - - if (WaitTillCardIsFree(base)) - goto errrelfw; - - status = inw(base + 0x4); - if (status != 0) { - dev_err(&pdev->dev, "Card%d got out of sync.Card " - "Status:0x%x\n", index + 1, status); - goto errrelfw; - } - } - -/* XXX: should we test it by reading it back and comparing with original like - * in load firmware package? */ - for (frame = (struct stframe *)fw->data; - frame < (struct stframe *)(fw->data + fw->size); - frame = (struct stframe *)((u8 *)(frame + 1) + - frame->count)) { - if (WaitTillCardIsFree(base)) - goto errrelfw; - - outw(0xf1, base); /* start download sequence */ - outw(0x00, base); - outw(frame->addr, base); /* lsb of address */ - - word_count = (frame->count >> 1) + frame->count % 2; - outw(word_count + 1, base); - InterruptTheCard(base); - - udelay(50); /* 0xf */ - - if (WaitTillCardIsFree(base)) - goto errrelfw; - - status = inw(base + 0x4); - if (status != 0) { - dev_warn(&pdev->dev, "Card%d rejected verify header:\n" - "Address:0x%x\n" - "Count:0x%x\n" - "Status: 0x%x\n", - index + 1, frame->addr, frame->count, status); - goto errrelfw; - } - - data = kmalloc(word_count * 2, GFP_KERNEL); - if (data == NULL) { - dev_err(&pdev->dev, "Card%d, firmware upload " - "failed, not enough memory\n", index + 1); - goto errrelfw; - } - inw(base); - insw(base, data, word_count); - InterruptTheCard(base); - - for (a = 0; a < frame->count; a++) - if (data[a] != frame->data[a]) { - kfree(data); - dev_err(&pdev->dev, "Card%d, firmware upload " - "failed\n", index + 1); - goto errrelfw; - } - kfree(data); - - udelay(50); /* 0xf */ - - if (WaitTillCardIsFree(base)) - goto errrelfw; - - status = inw(base + 0x4); - if (status != 0) { - dev_err(&pdev->dev, "Card%d verify got out of sync. " - "Card Status:0x%x\n", index + 1, status); - goto errrelfw; - } - } - - /* xfer ctrl */ - if (WaitTillCardIsFree(base)) - goto errrelfw; - - outw(0xf2, base); - outw(0x800, base); - outw(0x0, base); - outw(0x0, base); - InterruptTheCard(base); - outw(0x0, base + 0x4); /* for ISI4608 cards */ - - board->status |= FIRMWARE_LOADED; - retval = 0; - -errrelfw: - release_firmware(fw); -end: - return retval; -} - -/* - * Insmod can set static symbols so keep these static - */ -static unsigned int card_count; - -static int __devinit isicom_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - unsigned int uninitialized_var(signature), index; - int retval = -EPERM; - struct isi_board *board = NULL; - - if (card_count >= BOARD_COUNT) - goto err; - - retval = pci_enable_device(pdev); - if (retval) { - dev_err(&pdev->dev, "failed to enable\n"); - goto err; - } - - dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); - - /* allot the first empty slot in the array */ - for (index = 0; index < BOARD_COUNT; index++) { - if (isi_card[index].base == 0) { - board = &isi_card[index]; - break; - } - } - if (index == BOARD_COUNT) { - retval = -ENODEV; - goto err_disable; - } - - board->index = index; - board->base = pci_resource_start(pdev, 3); - board->irq = pdev->irq; - card_count++; - - pci_set_drvdata(pdev, board); - - retval = pci_request_region(pdev, 3, ISICOM_NAME); - if (retval) { - dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " - "will be disabled.\n", board->base, board->base + 15, - index + 1); - retval = -EBUSY; - goto errdec; - } - - retval = request_irq(board->irq, isicom_interrupt, - IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); - if (retval < 0) { - dev_err(&pdev->dev, "Could not install handler at Irq %d. " - "Card%d will be disabled.\n", board->irq, index + 1); - goto errunrr; - } - - retval = reset_card(pdev, index, &signature); - if (retval < 0) - goto errunri; - - retval = load_firmware(pdev, index, signature); - if (retval < 0) - goto errunri; - - for (index = 0; index < board->port_count; index++) - tty_register_device(isicom_normal, board->index * 16 + index, - &pdev->dev); - - return 0; - -errunri: - free_irq(board->irq, board); -errunrr: - pci_release_region(pdev, 3); -errdec: - board->base = 0; - card_count--; -err_disable: - pci_disable_device(pdev); -err: - return retval; -} - -static void __devexit isicom_remove(struct pci_dev *pdev) -{ - struct isi_board *board = pci_get_drvdata(pdev); - unsigned int i; - - for (i = 0; i < board->port_count; i++) - tty_unregister_device(isicom_normal, board->index * 16 + i); - - free_irq(board->irq, board); - pci_release_region(pdev, 3); - board->base = 0; - card_count--; - pci_disable_device(pdev); -} - -static int __init isicom_init(void) -{ - int retval, idx, channel; - struct isi_port *port; - - for (idx = 0; idx < BOARD_COUNT; idx++) { - port = &isi_ports[idx * 16]; - isi_card[idx].ports = port; - spin_lock_init(&isi_card[idx].card_lock); - for (channel = 0; channel < 16; channel++, port++) { - tty_port_init(&port->port); - port->port.ops = &isicom_port_ops; - port->magic = ISICOM_MAGIC; - port->card = &isi_card[idx]; - port->channel = channel; - port->port.close_delay = 50 * HZ/100; - port->port.closing_wait = 3000 * HZ/100; - port->status = 0; - /* . . . */ - } - isi_card[idx].base = 0; - isi_card[idx].irq = 0; - } - - /* tty driver structure initialization */ - isicom_normal = alloc_tty_driver(PORT_COUNT); - if (!isicom_normal) { - retval = -ENOMEM; - goto error; - } - - isicom_normal->owner = THIS_MODULE; - isicom_normal->name = "ttyM"; - isicom_normal->major = ISICOM_NMAJOR; - isicom_normal->minor_start = 0; - isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; - isicom_normal->subtype = SERIAL_TYPE_NORMAL; - isicom_normal->init_termios = tty_std_termios; - isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | - CLOCAL; - isicom_normal->flags = TTY_DRIVER_REAL_RAW | - TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; - tty_set_operations(isicom_normal, &isicom_ops); - - retval = tty_register_driver(isicom_normal); - if (retval) { - pr_debug("Couldn't register the dialin driver\n"); - goto err_puttty; - } - - retval = pci_register_driver(&isicom_driver); - if (retval < 0) { - pr_err("Unable to register pci driver.\n"); - goto err_unrtty; - } - - mod_timer(&tx, jiffies + 1); - - return 0; -err_unrtty: - tty_unregister_driver(isicom_normal); -err_puttty: - put_tty_driver(isicom_normal); -error: - return retval; -} - -static void __exit isicom_exit(void) -{ - del_timer_sync(&tx); - - pci_unregister_driver(&isicom_driver); - tty_unregister_driver(isicom_normal); - put_tty_driver(isicom_normal); -} - -module_init(isicom_init); -module_exit(isicom_exit); - -MODULE_AUTHOR("MultiTech"); -MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); -MODULE_LICENSE("GPL"); -MODULE_FIRMWARE("isi608.bin"); -MODULE_FIRMWARE("isi608em.bin"); -MODULE_FIRMWARE("isi616em.bin"); -MODULE_FIRMWARE("isi4608.bin"); -MODULE_FIRMWARE("isi4616.bin"); diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c deleted file mode 100644 index 35b0c38590e6..000000000000 --- a/drivers/char/moxa.c +++ /dev/null @@ -1,2092 +0,0 @@ -/*****************************************************************************/ -/* - * moxa.c -- MOXA Intellio family multiport serial driver. - * - * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). - * Copyright (c) 2007 Jiri Slaby - * - * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -/* - * MOXA Intellio Series Driver - * for : LINUX - * date : 1999/1/7 - * version : 5.1 - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include "moxa.h" - -#define MOXA_VERSION "6.0k" - -#define MOXA_FW_HDRLEN 32 - -#define MOXAMAJOR 172 - -#define MAX_BOARDS 4 /* Don't change this value */ -#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ -#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) - -#define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ - (brd)->boardType == MOXA_BOARD_C320_PCI) - -/* - * Define the Moxa PCI vendor and device IDs. - */ -#define MOXA_BUS_TYPE_ISA 0 -#define MOXA_BUS_TYPE_PCI 1 - -enum { - MOXA_BOARD_C218_PCI = 1, - MOXA_BOARD_C218_ISA, - MOXA_BOARD_C320_PCI, - MOXA_BOARD_C320_ISA, - MOXA_BOARD_CP204J, -}; - -static char *moxa_brdname[] = -{ - "C218 Turbo PCI series", - "C218 Turbo ISA series", - "C320 Turbo PCI series", - "C320 Turbo ISA series", - "CP-204J series", -}; - -#ifdef CONFIG_PCI -static struct pci_device_id moxa_pcibrds[] = { - { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), - .driver_data = MOXA_BOARD_C218_PCI }, - { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), - .driver_data = MOXA_BOARD_C320_PCI }, - { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), - .driver_data = MOXA_BOARD_CP204J }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, moxa_pcibrds); -#endif /* CONFIG_PCI */ - -struct moxa_port; - -static struct moxa_board_conf { - int boardType; - int numPorts; - int busType; - - unsigned int ready; - - struct moxa_port *ports; - - void __iomem *basemem; - void __iomem *intNdx; - void __iomem *intPend; - void __iomem *intTable; -} moxa_boards[MAX_BOARDS]; - -struct mxser_mstatus { - tcflag_t cflag; - int cts; - int dsr; - int ri; - int dcd; -}; - -struct moxaq_str { - int inq; - int outq; -}; - -struct moxa_port { - struct tty_port port; - struct moxa_board_conf *board; - void __iomem *tableAddr; - - int type; - int cflag; - unsigned long statusflags; - - u8 DCDState; /* Protected by the port lock */ - u8 lineCtrl; - u8 lowChkFlag; -}; - -struct mon_str { - int tick; - int rxcnt[MAX_PORTS]; - int txcnt[MAX_PORTS]; -}; - -/* statusflags */ -#define TXSTOPPED 1 -#define LOWWAIT 2 -#define EMPTYWAIT 3 - -#define SERIAL_DO_RESTART - -#define WAKEUP_CHARS 256 - -static int ttymajor = MOXAMAJOR; -static struct mon_str moxaLog; -static unsigned int moxaFuncTout = HZ / 2; -static unsigned int moxaLowWaterChk; -static DEFINE_MUTEX(moxa_openlock); -static DEFINE_SPINLOCK(moxa_lock); - -static unsigned long baseaddr[MAX_BOARDS]; -static unsigned int type[MAX_BOARDS]; -static unsigned int numports[MAX_BOARDS]; - -MODULE_AUTHOR("William Chen"); -MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); -MODULE_LICENSE("GPL"); -MODULE_FIRMWARE("c218tunx.cod"); -MODULE_FIRMWARE("cp204unx.cod"); -MODULE_FIRMWARE("c320tunx.cod"); - -module_param_array(type, uint, NULL, 0); -MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); -module_param_array(baseaddr, ulong, NULL, 0); -MODULE_PARM_DESC(baseaddr, "base address"); -module_param_array(numports, uint, NULL, 0); -MODULE_PARM_DESC(numports, "numports (ignored for C218)"); - -module_param(ttymajor, int, 0); - -/* - * static functions: - */ -static int moxa_open(struct tty_struct *, struct file *); -static void moxa_close(struct tty_struct *, struct file *); -static int moxa_write(struct tty_struct *, const unsigned char *, int); -static int moxa_write_room(struct tty_struct *); -static void moxa_flush_buffer(struct tty_struct *); -static int moxa_chars_in_buffer(struct tty_struct *); -static void moxa_set_termios(struct tty_struct *, struct ktermios *); -static void moxa_stop(struct tty_struct *); -static void moxa_start(struct tty_struct *); -static void moxa_hangup(struct tty_struct *); -static int moxa_tiocmget(struct tty_struct *tty); -static int moxa_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear); -static void moxa_poll(unsigned long); -static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); -static void moxa_shutdown(struct tty_port *); -static int moxa_carrier_raised(struct tty_port *); -static void moxa_dtr_rts(struct tty_port *, int); -/* - * moxa board interface functions: - */ -static void MoxaPortEnable(struct moxa_port *); -static void MoxaPortDisable(struct moxa_port *); -static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); -static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); -static void MoxaPortLineCtrl(struct moxa_port *, int, int); -static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); -static int MoxaPortLineStatus(struct moxa_port *); -static void MoxaPortFlushData(struct moxa_port *, int); -static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); -static int MoxaPortReadData(struct moxa_port *); -static int MoxaPortTxQueue(struct moxa_port *); -static int MoxaPortRxQueue(struct moxa_port *); -static int MoxaPortTxFree(struct moxa_port *); -static void MoxaPortTxDisable(struct moxa_port *); -static void MoxaPortTxEnable(struct moxa_port *); -static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); -static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); -static void MoxaSetFifo(struct moxa_port *port, int enable); - -/* - * I/O functions - */ - -static DEFINE_SPINLOCK(moxafunc_lock); - -static void moxa_wait_finish(void __iomem *ofsAddr) -{ - unsigned long end = jiffies + moxaFuncTout; - - while (readw(ofsAddr + FuncCode) != 0) - if (time_after(jiffies, end)) - return; - if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) - printk(KERN_WARNING "moxa function expired\n"); -} - -static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) -{ - unsigned long flags; - spin_lock_irqsave(&moxafunc_lock, flags); - writew(arg, ofsAddr + FuncArg); - writew(cmd, ofsAddr + FuncCode); - moxa_wait_finish(ofsAddr); - spin_unlock_irqrestore(&moxafunc_lock, flags); -} - -static int moxafuncret(void __iomem *ofsAddr, u16 cmd, u16 arg) -{ - unsigned long flags; - u16 ret; - spin_lock_irqsave(&moxafunc_lock, flags); - writew(arg, ofsAddr + FuncArg); - writew(cmd, ofsAddr + FuncCode); - moxa_wait_finish(ofsAddr); - ret = readw(ofsAddr + FuncArg); - spin_unlock_irqrestore(&moxafunc_lock, flags); - return ret; -} - -static void moxa_low_water_check(void __iomem *ofsAddr) -{ - u16 rptr, wptr, mask, len; - - if (readb(ofsAddr + FlagStat) & Xoff_state) { - rptr = readw(ofsAddr + RXrptr); - wptr = readw(ofsAddr + RXwptr); - mask = readw(ofsAddr + RX_mask); - len = (wptr - rptr) & mask; - if (len <= Low_water) - moxafunc(ofsAddr, FC_SendXon, 0); - } -} - -/* - * TTY operations - */ - -static int moxa_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct moxa_port *ch = tty->driver_data; - void __user *argp = (void __user *)arg; - int status, ret = 0; - - if (tty->index == MAX_PORTS) { - if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && - cmd != MOXA_GETMSTATUS) - return -EINVAL; - } else if (!ch) - return -ENODEV; - - switch (cmd) { - case MOXA_GETDATACOUNT: - moxaLog.tick = jiffies; - if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) - ret = -EFAULT; - break; - case MOXA_FLUSH_QUEUE: - MoxaPortFlushData(ch, arg); - break; - case MOXA_GET_IOQUEUE: { - struct moxaq_str __user *argm = argp; - struct moxaq_str tmp; - struct moxa_port *p; - unsigned int i, j; - - for (i = 0; i < MAX_BOARDS; i++) { - p = moxa_boards[i].ports; - for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { - memset(&tmp, 0, sizeof(tmp)); - spin_lock_bh(&moxa_lock); - if (moxa_boards[i].ready) { - tmp.inq = MoxaPortRxQueue(p); - tmp.outq = MoxaPortTxQueue(p); - } - spin_unlock_bh(&moxa_lock); - if (copy_to_user(argm, &tmp, sizeof(tmp))) - return -EFAULT; - } - } - break; - } case MOXA_GET_OQUEUE: - status = MoxaPortTxQueue(ch); - ret = put_user(status, (unsigned long __user *)argp); - break; - case MOXA_GET_IQUEUE: - status = MoxaPortRxQueue(ch); - ret = put_user(status, (unsigned long __user *)argp); - break; - case MOXA_GETMSTATUS: { - struct mxser_mstatus __user *argm = argp; - struct mxser_mstatus tmp; - struct moxa_port *p; - unsigned int i, j; - - for (i = 0; i < MAX_BOARDS; i++) { - p = moxa_boards[i].ports; - for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { - struct tty_struct *ttyp; - memset(&tmp, 0, sizeof(tmp)); - spin_lock_bh(&moxa_lock); - if (!moxa_boards[i].ready) { - spin_unlock_bh(&moxa_lock); - goto copy; - } - - status = MoxaPortLineStatus(p); - spin_unlock_bh(&moxa_lock); - - if (status & 1) - tmp.cts = 1; - if (status & 2) - tmp.dsr = 1; - if (status & 4) - tmp.dcd = 1; - - ttyp = tty_port_tty_get(&p->port); - if (!ttyp || !ttyp->termios) - tmp.cflag = p->cflag; - else - tmp.cflag = ttyp->termios->c_cflag; - tty_kref_put(tty); -copy: - if (copy_to_user(argm, &tmp, sizeof(tmp))) - return -EFAULT; - } - } - break; - } - case TIOCGSERIAL: - mutex_lock(&ch->port.mutex); - ret = moxa_get_serial_info(ch, argp); - mutex_unlock(&ch->port.mutex); - break; - case TIOCSSERIAL: - mutex_lock(&ch->port.mutex); - ret = moxa_set_serial_info(ch, argp); - mutex_unlock(&ch->port.mutex); - break; - default: - ret = -ENOIOCTLCMD; - } - return ret; -} - -static int moxa_break_ctl(struct tty_struct *tty, int state) -{ - struct moxa_port *port = tty->driver_data; - - moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, - Magic_code); - return 0; -} - -static const struct tty_operations moxa_ops = { - .open = moxa_open, - .close = moxa_close, - .write = moxa_write, - .write_room = moxa_write_room, - .flush_buffer = moxa_flush_buffer, - .chars_in_buffer = moxa_chars_in_buffer, - .ioctl = moxa_ioctl, - .set_termios = moxa_set_termios, - .stop = moxa_stop, - .start = moxa_start, - .hangup = moxa_hangup, - .break_ctl = moxa_break_ctl, - .tiocmget = moxa_tiocmget, - .tiocmset = moxa_tiocmset, -}; - -static const struct tty_port_operations moxa_port_ops = { - .carrier_raised = moxa_carrier_raised, - .dtr_rts = moxa_dtr_rts, - .shutdown = moxa_shutdown, -}; - -static struct tty_driver *moxaDriver; -static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); - -/* - * HW init - */ - -static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) -{ - switch (brd->boardType) { - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - if (model != 1) - goto err; - break; - case MOXA_BOARD_CP204J: - if (model != 3) - goto err; - break; - default: - if (model != 2) - goto err; - break; - } - return 0; -err: - return -EINVAL; -} - -static int moxa_check_fw(const void *ptr) -{ - const __le16 *lptr = ptr; - - if (*lptr != cpu_to_le16(0x7980)) - return -EINVAL; - - return 0; -} - -static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, - size_t len) -{ - void __iomem *baseAddr = brd->basemem; - u16 tmp; - - writeb(HW_reset, baseAddr + Control_reg); /* reset */ - msleep(10); - memset_io(baseAddr, 0, 4096); - memcpy_toio(baseAddr, buf, len); /* download BIOS */ - writeb(0, baseAddr + Control_reg); /* restart */ - - msleep(2000); - - switch (brd->boardType) { - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - tmp = readw(baseAddr + C218_key); - if (tmp != C218_KeyCode) - goto err; - break; - case MOXA_BOARD_CP204J: - tmp = readw(baseAddr + C218_key); - if (tmp != CP204J_KeyCode) - goto err; - break; - default: - tmp = readw(baseAddr + C320_key); - if (tmp != C320_KeyCode) - goto err; - tmp = readw(baseAddr + C320_status); - if (tmp != STS_init) { - printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " - "module not found\n"); - return -EIO; - } - break; - } - - return 0; -err: - printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); - return -EIO; -} - -static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, - size_t len) -{ - void __iomem *baseAddr = brd->basemem; - - if (len < 7168) { - printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); - return -EINVAL; - } - - writew(len - 7168 - 2, baseAddr + C320bapi_len); - writeb(1, baseAddr + Control_reg); /* Select Page 1 */ - memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); - writeb(2, baseAddr + Control_reg); /* Select Page 2 */ - memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); - - return 0; -} - -static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, - size_t len) -{ - void __iomem *baseAddr = brd->basemem; - const __le16 *uptr = ptr; - size_t wlen, len2, j; - unsigned long key, loadbuf, loadlen, checksum, checksum_ok; - unsigned int i, retry; - u16 usum, keycode; - - keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : - C218_KeyCode; - - switch (brd->boardType) { - case MOXA_BOARD_CP204J: - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - key = C218_key; - loadbuf = C218_LoadBuf; - loadlen = C218DLoad_len; - checksum = C218check_sum; - checksum_ok = C218chksum_ok; - break; - default: - key = C320_key; - keycode = C320_KeyCode; - loadbuf = C320_LoadBuf; - loadlen = C320DLoad_len; - checksum = C320check_sum; - checksum_ok = C320chksum_ok; - break; - } - - usum = 0; - wlen = len >> 1; - for (i = 0; i < wlen; i++) - usum += le16_to_cpu(uptr[i]); - retry = 0; - do { - wlen = len >> 1; - j = 0; - while (wlen) { - len2 = (wlen > 2048) ? 2048 : wlen; - wlen -= len2; - memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); - j += len2 << 1; - - writew(len2, baseAddr + loadlen); - writew(0, baseAddr + key); - for (i = 0; i < 100; i++) { - if (readw(baseAddr + key) == keycode) - break; - msleep(10); - } - if (readw(baseAddr + key) != keycode) - return -EIO; - } - writew(0, baseAddr + loadlen); - writew(usum, baseAddr + checksum); - writew(0, baseAddr + key); - for (i = 0; i < 100; i++) { - if (readw(baseAddr + key) == keycode) - break; - msleep(10); - } - retry++; - } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); - if (readb(baseAddr + checksum_ok) != 1) - return -EIO; - - writew(0, baseAddr + key); - for (i = 0; i < 600; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) - return -EIO; - - if (MOXA_IS_320(brd)) { - if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ - writew(0x3800, baseAddr + TMS320_PORT1); - writew(0x3900, baseAddr + TMS320_PORT2); - writew(28499, baseAddr + TMS320_CLOCK); - } else { - writew(0x3200, baseAddr + TMS320_PORT1); - writew(0x3400, baseAddr + TMS320_PORT2); - writew(19999, baseAddr + TMS320_CLOCK); - } - } - writew(1, baseAddr + Disable_IRQ); - writew(0, baseAddr + Magic_no); - for (i = 0; i < 500; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) - return -EIO; - - if (MOXA_IS_320(brd)) { - j = readw(baseAddr + Module_cnt); - if (j <= 0) - return -EIO; - brd->numPorts = j * 8; - writew(j, baseAddr + Module_no); - writew(0, baseAddr + Magic_no); - for (i = 0; i < 600; i++) { - if (readw(baseAddr + Magic_no) == Magic_code) - break; - msleep(10); - } - if (readw(baseAddr + Magic_no) != Magic_code) - return -EIO; - } - brd->intNdx = baseAddr + IRQindex; - brd->intPend = baseAddr + IRQpending; - brd->intTable = baseAddr + IRQtable; - - return 0; -} - -static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, - size_t len) -{ - void __iomem *ofsAddr, *baseAddr = brd->basemem; - struct moxa_port *port; - int retval, i; - - if (len % 2) { - printk(KERN_ERR "MOXA: bios length is not even\n"); - return -EINVAL; - } - - retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ - if (retval) - return retval; - - switch (brd->boardType) { - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - case MOXA_BOARD_CP204J: - port = brd->ports; - for (i = 0; i < brd->numPorts; i++, port++) { - port->board = brd; - port->DCDState = 0; - port->tableAddr = baseAddr + Extern_table + - Extern_size * i; - ofsAddr = port->tableAddr; - writew(C218rx_mask, ofsAddr + RX_mask); - writew(C218tx_mask, ofsAddr + TX_mask); - writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); - - writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); - - } - break; - default: - port = brd->ports; - for (i = 0; i < brd->numPorts; i++, port++) { - port->board = brd; - port->DCDState = 0; - port->tableAddr = baseAddr + Extern_table + - Extern_size * i; - ofsAddr = port->tableAddr; - switch (brd->numPorts) { - case 8: - writew(C320p8rx_mask, ofsAddr + RX_mask); - writew(C320p8tx_mask, ofsAddr + TX_mask); - writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); - writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); - - break; - case 16: - writew(C320p16rx_mask, ofsAddr + RX_mask); - writew(C320p16tx_mask, ofsAddr + TX_mask); - writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); - writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); - break; - - case 24: - writew(C320p24rx_mask, ofsAddr + RX_mask); - writew(C320p24tx_mask, ofsAddr + TX_mask); - writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); - writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); - writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); - break; - case 32: - writew(C320p32rx_mask, ofsAddr + RX_mask); - writew(C320p32tx_mask, ofsAddr + TX_mask); - writew(C320p32tx_ofs, ofsAddr + Ofs_txb); - writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); - writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); - writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); - writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); - break; - } - } - break; - } - return 0; -} - -static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) -{ - const void *ptr = fw->data; - char rsn[64]; - u16 lens[5]; - size_t len; - unsigned int a, lenp, lencnt; - int ret = -EINVAL; - struct { - __le32 magic; /* 0x34303430 */ - u8 reserved1[2]; - u8 type; /* UNIX = 3 */ - u8 model; /* C218T=1, C320T=2, CP204=3 */ - u8 reserved2[8]; - __le16 len[5]; - } const *hdr = ptr; - - BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); - - if (fw->size < MOXA_FW_HDRLEN) { - strcpy(rsn, "too short (even header won't fit)"); - goto err; - } - if (hdr->magic != cpu_to_le32(0x30343034)) { - sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); - goto err; - } - if (hdr->type != 3) { - sprintf(rsn, "not for linux, type is %u", hdr->type); - goto err; - } - if (moxa_check_fw_model(brd, hdr->model)) { - sprintf(rsn, "not for this card, model is %u", hdr->model); - goto err; - } - - len = MOXA_FW_HDRLEN; - lencnt = hdr->model == 2 ? 5 : 3; - for (a = 0; a < ARRAY_SIZE(lens); a++) { - lens[a] = le16_to_cpu(hdr->len[a]); - if (lens[a] && len + lens[a] <= fw->size && - moxa_check_fw(&fw->data[len])) - printk(KERN_WARNING "MOXA firmware: unexpected input " - "at offset %u, but going on\n", (u32)len); - if (!lens[a] && a < lencnt) { - sprintf(rsn, "too few entries in fw file"); - goto err; - } - len += lens[a]; - } - - if (len != fw->size) { - sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, - (u32)len); - goto err; - } - - ptr += MOXA_FW_HDRLEN; - lenp = 0; /* bios */ - - strcpy(rsn, "read above"); - - ret = moxa_load_bios(brd, ptr, lens[lenp]); - if (ret) - goto err; - - /* we skip the tty section (lens[1]), since we don't need it */ - ptr += lens[lenp] + lens[lenp + 1]; - lenp += 2; /* comm */ - - if (hdr->model == 2) { - ret = moxa_load_320b(brd, ptr, lens[lenp]); - if (ret) - goto err; - /* skip another tty */ - ptr += lens[lenp] + lens[lenp + 1]; - lenp += 2; - } - - ret = moxa_load_code(brd, ptr, lens[lenp]); - if (ret) - goto err; - - return 0; -err: - printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); - return ret; -} - -static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) -{ - const struct firmware *fw; - const char *file; - struct moxa_port *p; - unsigned int i; - int ret; - - brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), - GFP_KERNEL); - if (brd->ports == NULL) { - printk(KERN_ERR "cannot allocate memory for ports\n"); - ret = -ENOMEM; - goto err; - } - - for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { - tty_port_init(&p->port); - p->port.ops = &moxa_port_ops; - p->type = PORT_16550A; - p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; - } - - switch (brd->boardType) { - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - file = "c218tunx.cod"; - break; - case MOXA_BOARD_CP204J: - file = "cp204unx.cod"; - break; - default: - file = "c320tunx.cod"; - break; - } - - ret = request_firmware(&fw, file, dev); - if (ret) { - printk(KERN_ERR "MOXA: request_firmware failed. Make sure " - "you've placed '%s' file into your firmware " - "loader directory (e.g. /lib/firmware)\n", - file); - goto err_free; - } - - ret = moxa_load_fw(brd, fw); - - release_firmware(fw); - - if (ret) - goto err_free; - - spin_lock_bh(&moxa_lock); - brd->ready = 1; - if (!timer_pending(&moxaTimer)) - mod_timer(&moxaTimer, jiffies + HZ / 50); - spin_unlock_bh(&moxa_lock); - - return 0; -err_free: - kfree(brd->ports); -err: - return ret; -} - -static void moxa_board_deinit(struct moxa_board_conf *brd) -{ - unsigned int a, opened; - - mutex_lock(&moxa_openlock); - spin_lock_bh(&moxa_lock); - brd->ready = 0; - spin_unlock_bh(&moxa_lock); - - /* pci hot-un-plug support */ - for (a = 0; a < brd->numPorts; a++) - if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { - struct tty_struct *tty = tty_port_tty_get( - &brd->ports[a].port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } - } - while (1) { - opened = 0; - for (a = 0; a < brd->numPorts; a++) - if (brd->ports[a].port.flags & ASYNC_INITIALIZED) - opened++; - mutex_unlock(&moxa_openlock); - if (!opened) - break; - msleep(50); - mutex_lock(&moxa_openlock); - } - - iounmap(brd->basemem); - brd->basemem = NULL; - kfree(brd->ports); -} - -#ifdef CONFIG_PCI -static int __devinit moxa_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct moxa_board_conf *board; - unsigned int i; - int board_type = ent->driver_data; - int retval; - - retval = pci_enable_device(pdev); - if (retval) { - dev_err(&pdev->dev, "can't enable pci device\n"); - goto err; - } - - for (i = 0; i < MAX_BOARDS; i++) - if (moxa_boards[i].basemem == NULL) - break; - - retval = -ENODEV; - if (i >= MAX_BOARDS) { - dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " - "found. Board is ignored.\n", MAX_BOARDS); - goto err; - } - - board = &moxa_boards[i]; - - retval = pci_request_region(pdev, 2, "moxa-base"); - if (retval) { - dev_err(&pdev->dev, "can't request pci region 2\n"); - goto err; - } - - board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); - if (board->basemem == NULL) { - dev_err(&pdev->dev, "can't remap io space 2\n"); - goto err_reg; - } - - board->boardType = board_type; - switch (board_type) { - case MOXA_BOARD_C218_ISA: - case MOXA_BOARD_C218_PCI: - board->numPorts = 8; - break; - - case MOXA_BOARD_CP204J: - board->numPorts = 4; - break; - default: - board->numPorts = 0; - break; - } - board->busType = MOXA_BUS_TYPE_PCI; - - retval = moxa_init_board(board, &pdev->dev); - if (retval) - goto err_base; - - pci_set_drvdata(pdev, board); - - dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", - moxa_brdname[board_type - 1], board->numPorts); - - return 0; -err_base: - iounmap(board->basemem); - board->basemem = NULL; -err_reg: - pci_release_region(pdev, 2); -err: - return retval; -} - -static void __devexit moxa_pci_remove(struct pci_dev *pdev) -{ - struct moxa_board_conf *brd = pci_get_drvdata(pdev); - - moxa_board_deinit(brd); - - pci_release_region(pdev, 2); -} - -static struct pci_driver moxa_pci_driver = { - .name = "moxa", - .id_table = moxa_pcibrds, - .probe = moxa_pci_probe, - .remove = __devexit_p(moxa_pci_remove) -}; -#endif /* CONFIG_PCI */ - -static int __init moxa_init(void) -{ - unsigned int isabrds = 0; - int retval = 0; - struct moxa_board_conf *brd = moxa_boards; - unsigned int i; - - printk(KERN_INFO "MOXA Intellio family driver version %s\n", - MOXA_VERSION); - moxaDriver = alloc_tty_driver(MAX_PORTS + 1); - if (!moxaDriver) - return -ENOMEM; - - moxaDriver->owner = THIS_MODULE; - moxaDriver->name = "ttyMX"; - moxaDriver->major = ttymajor; - moxaDriver->minor_start = 0; - moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; - moxaDriver->subtype = SERIAL_TYPE_NORMAL; - moxaDriver->init_termios = tty_std_termios; - moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; - moxaDriver->init_termios.c_ispeed = 9600; - moxaDriver->init_termios.c_ospeed = 9600; - moxaDriver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(moxaDriver, &moxa_ops); - - if (tty_register_driver(moxaDriver)) { - printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); - put_tty_driver(moxaDriver); - return -1; - } - - /* Find the boards defined from module args. */ - - for (i = 0; i < MAX_BOARDS; i++) { - if (!baseaddr[i]) - break; - if (type[i] == MOXA_BOARD_C218_ISA || - type[i] == MOXA_BOARD_C320_ISA) { - pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", - isabrds + 1, moxa_brdname[type[i] - 1], - baseaddr[i]); - brd->boardType = type[i]; - brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : - numports[i]; - brd->busType = MOXA_BUS_TYPE_ISA; - brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); - if (!brd->basemem) { - printk(KERN_ERR "MOXA: can't remap %lx\n", - baseaddr[i]); - continue; - } - if (moxa_init_board(brd, NULL)) { - iounmap(brd->basemem); - brd->basemem = NULL; - continue; - } - - printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " - "ready (%u ports, firmware loaded)\n", - baseaddr[i], brd->numPorts); - - brd++; - isabrds++; - } - } - -#ifdef CONFIG_PCI - retval = pci_register_driver(&moxa_pci_driver); - if (retval) { - printk(KERN_ERR "Can't register MOXA pci driver!\n"); - if (isabrds) - retval = 0; - } -#endif - - return retval; -} - -static void __exit moxa_exit(void) -{ - unsigned int i; - -#ifdef CONFIG_PCI - pci_unregister_driver(&moxa_pci_driver); -#endif - - for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ - if (moxa_boards[i].ready) - moxa_board_deinit(&moxa_boards[i]); - - del_timer_sync(&moxaTimer); - - if (tty_unregister_driver(moxaDriver)) - printk(KERN_ERR "Couldn't unregister MOXA Intellio family " - "serial driver\n"); - put_tty_driver(moxaDriver); -} - -module_init(moxa_init); -module_exit(moxa_exit); - -static void moxa_shutdown(struct tty_port *port) -{ - struct moxa_port *ch = container_of(port, struct moxa_port, port); - MoxaPortDisable(ch); - MoxaPortFlushData(ch, 2); - clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); -} - -static int moxa_carrier_raised(struct tty_port *port) -{ - struct moxa_port *ch = container_of(port, struct moxa_port, port); - int dcd; - - spin_lock_irq(&port->lock); - dcd = ch->DCDState; - spin_unlock_irq(&port->lock); - return dcd; -} - -static void moxa_dtr_rts(struct tty_port *port, int onoff) -{ - struct moxa_port *ch = container_of(port, struct moxa_port, port); - MoxaPortLineCtrl(ch, onoff, onoff); -} - - -static int moxa_open(struct tty_struct *tty, struct file *filp) -{ - struct moxa_board_conf *brd; - struct moxa_port *ch; - int port; - int retval; - - port = tty->index; - if (port == MAX_PORTS) { - return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; - } - if (mutex_lock_interruptible(&moxa_openlock)) - return -ERESTARTSYS; - brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; - if (!brd->ready) { - mutex_unlock(&moxa_openlock); - return -ENODEV; - } - - if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { - mutex_unlock(&moxa_openlock); - return -ENODEV; - } - - ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; - ch->port.count++; - tty->driver_data = ch; - tty_port_tty_set(&ch->port, tty); - mutex_lock(&ch->port.mutex); - if (!(ch->port.flags & ASYNC_INITIALIZED)) { - ch->statusflags = 0; - moxa_set_tty_param(tty, tty->termios); - MoxaPortLineCtrl(ch, 1, 1); - MoxaPortEnable(ch); - MoxaSetFifo(ch, ch->type == PORT_16550A); - ch->port.flags |= ASYNC_INITIALIZED; - } - mutex_unlock(&ch->port.mutex); - mutex_unlock(&moxa_openlock); - - retval = tty_port_block_til_ready(&ch->port, tty, filp); - if (retval == 0) - set_bit(ASYNCB_NORMAL_ACTIVE, &ch->port.flags); - return retval; -} - -static void moxa_close(struct tty_struct *tty, struct file *filp) -{ - struct moxa_port *ch = tty->driver_data; - ch->cflag = tty->termios->c_cflag; - tty_port_close(&ch->port, tty, filp); -} - -static int moxa_write(struct tty_struct *tty, - const unsigned char *buf, int count) -{ - struct moxa_port *ch = tty->driver_data; - int len; - - if (ch == NULL) - return 0; - - spin_lock_bh(&moxa_lock); - len = MoxaPortWriteData(tty, buf, count); - spin_unlock_bh(&moxa_lock); - - set_bit(LOWWAIT, &ch->statusflags); - return len; -} - -static int moxa_write_room(struct tty_struct *tty) -{ - struct moxa_port *ch; - - if (tty->stopped) - return 0; - ch = tty->driver_data; - if (ch == NULL) - return 0; - return MoxaPortTxFree(ch); -} - -static void moxa_flush_buffer(struct tty_struct *tty) -{ - struct moxa_port *ch = tty->driver_data; - - if (ch == NULL) - return; - MoxaPortFlushData(ch, 1); - tty_wakeup(tty); -} - -static int moxa_chars_in_buffer(struct tty_struct *tty) -{ - struct moxa_port *ch = tty->driver_data; - int chars; - - chars = MoxaPortTxQueue(ch); - if (chars) - /* - * Make it possible to wakeup anything waiting for output - * in tty_ioctl.c, etc. - */ - set_bit(EMPTYWAIT, &ch->statusflags); - return chars; -} - -static int moxa_tiocmget(struct tty_struct *tty) -{ - struct moxa_port *ch = tty->driver_data; - int flag = 0, dtr, rts; - - MoxaPortGetLineOut(ch, &dtr, &rts); - if (dtr) - flag |= TIOCM_DTR; - if (rts) - flag |= TIOCM_RTS; - dtr = MoxaPortLineStatus(ch); - if (dtr & 1) - flag |= TIOCM_CTS; - if (dtr & 2) - flag |= TIOCM_DSR; - if (dtr & 4) - flag |= TIOCM_CD; - return flag; -} - -static int moxa_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct moxa_port *ch; - int port; - int dtr, rts; - - port = tty->index; - mutex_lock(&moxa_openlock); - ch = tty->driver_data; - if (!ch) { - mutex_unlock(&moxa_openlock); - return -EINVAL; - } - - MoxaPortGetLineOut(ch, &dtr, &rts); - if (set & TIOCM_RTS) - rts = 1; - if (set & TIOCM_DTR) - dtr = 1; - if (clear & TIOCM_RTS) - rts = 0; - if (clear & TIOCM_DTR) - dtr = 0; - MoxaPortLineCtrl(ch, dtr, rts); - mutex_unlock(&moxa_openlock); - return 0; -} - -static void moxa_set_termios(struct tty_struct *tty, - struct ktermios *old_termios) -{ - struct moxa_port *ch = tty->driver_data; - - if (ch == NULL) - return; - moxa_set_tty_param(tty, old_termios); - if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) - wake_up_interruptible(&ch->port.open_wait); -} - -static void moxa_stop(struct tty_struct *tty) -{ - struct moxa_port *ch = tty->driver_data; - - if (ch == NULL) - return; - MoxaPortTxDisable(ch); - set_bit(TXSTOPPED, &ch->statusflags); -} - - -static void moxa_start(struct tty_struct *tty) -{ - struct moxa_port *ch = tty->driver_data; - - if (ch == NULL) - return; - - if (!(ch->statusflags & TXSTOPPED)) - return; - - MoxaPortTxEnable(ch); - clear_bit(TXSTOPPED, &ch->statusflags); -} - -static void moxa_hangup(struct tty_struct *tty) -{ - struct moxa_port *ch = tty->driver_data; - tty_port_hangup(&ch->port); -} - -static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) -{ - struct tty_struct *tty; - unsigned long flags; - dcd = !!dcd; - - spin_lock_irqsave(&p->port.lock, flags); - if (dcd != p->DCDState) { - p->DCDState = dcd; - spin_unlock_irqrestore(&p->port.lock, flags); - tty = tty_port_tty_get(&p->port); - if (tty && C_CLOCAL(tty) && !dcd) - tty_hangup(tty); - tty_kref_put(tty); - } - else - spin_unlock_irqrestore(&p->port.lock, flags); -} - -static int moxa_poll_port(struct moxa_port *p, unsigned int handle, - u16 __iomem *ip) -{ - struct tty_struct *tty = tty_port_tty_get(&p->port); - void __iomem *ofsAddr; - unsigned int inited = p->port.flags & ASYNC_INITIALIZED; - u16 intr; - - if (tty) { - if (test_bit(EMPTYWAIT, &p->statusflags) && - MoxaPortTxQueue(p) == 0) { - clear_bit(EMPTYWAIT, &p->statusflags); - tty_wakeup(tty); - } - if (test_bit(LOWWAIT, &p->statusflags) && !tty->stopped && - MoxaPortTxQueue(p) <= WAKEUP_CHARS) { - clear_bit(LOWWAIT, &p->statusflags); - tty_wakeup(tty); - } - - if (inited && !test_bit(TTY_THROTTLED, &tty->flags) && - MoxaPortRxQueue(p) > 0) { /* RX */ - MoxaPortReadData(p); - tty_schedule_flip(tty); - } - } else { - clear_bit(EMPTYWAIT, &p->statusflags); - MoxaPortFlushData(p, 0); /* flush RX */ - } - - if (!handle) /* nothing else to do */ - goto put; - - intr = readw(ip); /* port irq status */ - if (intr == 0) - goto put; - - writew(0, ip); /* ACK port */ - ofsAddr = p->tableAddr; - if (intr & IntrTx) /* disable tx intr */ - writew(readw(ofsAddr + HostStat) & ~WakeupTx, - ofsAddr + HostStat); - - if (!inited) - goto put; - - if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ - tty_insert_flip_char(tty, 0, TTY_BREAK); - tty_schedule_flip(tty); - } - - if (intr & IntrLine) - moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); -put: - tty_kref_put(tty); - - return 0; -} - -static void moxa_poll(unsigned long ignored) -{ - struct moxa_board_conf *brd; - u16 __iomem *ip; - unsigned int card, port, served = 0; - - spin_lock(&moxa_lock); - for (card = 0; card < MAX_BOARDS; card++) { - brd = &moxa_boards[card]; - if (!brd->ready) - continue; - - served++; - - ip = NULL; - if (readb(brd->intPend) == 0xff) - ip = brd->intTable + readb(brd->intNdx); - - for (port = 0; port < brd->numPorts; port++) - moxa_poll_port(&brd->ports[port], !!ip, ip + port); - - if (ip) - writeb(0, brd->intPend); /* ACK */ - - if (moxaLowWaterChk) { - struct moxa_port *p = brd->ports; - for (port = 0; port < brd->numPorts; port++, p++) - if (p->lowChkFlag) { - p->lowChkFlag = 0; - moxa_low_water_check(p->tableAddr); - } - } - } - moxaLowWaterChk = 0; - - if (served) - mod_timer(&moxaTimer, jiffies + HZ / 50); - spin_unlock(&moxa_lock); -} - -/******************************************************************************/ - -static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) -{ - register struct ktermios *ts = tty->termios; - struct moxa_port *ch = tty->driver_data; - int rts, cts, txflow, rxflow, xany, baud; - - rts = cts = txflow = rxflow = xany = 0; - if (ts->c_cflag & CRTSCTS) - rts = cts = 1; - if (ts->c_iflag & IXON) - txflow = 1; - if (ts->c_iflag & IXOFF) - rxflow = 1; - if (ts->c_iflag & IXANY) - xany = 1; - - /* Clear the features we don't support */ - ts->c_cflag &= ~CMSPAR; - MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); - baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); - if (baud == -1) - baud = tty_termios_baud_rate(old_termios); - /* Not put the baud rate into the termios data */ - tty_encode_baud_rate(tty, baud, baud); -} - -/***************************************************************************** - * Driver level functions: * - *****************************************************************************/ - -static void MoxaPortFlushData(struct moxa_port *port, int mode) -{ - void __iomem *ofsAddr; - if (mode < 0 || mode > 2) - return; - ofsAddr = port->tableAddr; - moxafunc(ofsAddr, FC_FlushQueue, mode); - if (mode != 1) { - port->lowChkFlag = 0; - moxa_low_water_check(ofsAddr); - } -} - -/* - * Moxa Port Number Description: - * - * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, - * the port number using in MOXA driver functions will be 0 to 31 for - * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 - * to 127 for fourth. For example, if you setup three MOXA boards, - * first board is C218, second board is C320-16 and third board is - * C320-32. The port number of first board (C218 - 8 ports) is from - * 0 to 7. The port number of second board (C320 - 16 ports) is form - * 32 to 47. The port number of third board (C320 - 32 ports) is from - * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to - * 127 will be invalid. - * - * - * Moxa Functions Description: - * - * Function 1: Driver initialization routine, this routine must be - * called when initialized driver. - * Syntax: - * void MoxaDriverInit(); - * - * - * Function 2: Moxa driver private IOCTL command processing. - * Syntax: - * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); - * - * unsigned int cmd : IOCTL command - * unsigned long arg : IOCTL argument - * int port : port number (0 - 127) - * - * return: 0 (OK) - * -EINVAL - * -ENOIOCTLCMD - * - * - * Function 6: Enable this port to start Tx/Rx data. - * Syntax: - * void MoxaPortEnable(int port); - * int port : port number (0 - 127) - * - * - * Function 7: Disable this port - * Syntax: - * void MoxaPortDisable(int port); - * int port : port number (0 - 127) - * - * - * Function 10: Setting baud rate of this port. - * Syntax: - * speed_t MoxaPortSetBaud(int port, speed_t baud); - * int port : port number (0 - 127) - * long baud : baud rate (50 - 115200) - * - * return: 0 : this port is invalid or baud < 50 - * 50 - 115200 : the real baud rate set to the port, if - * the argument baud is large than maximun - * available baud rate, the real setting - * baud rate will be the maximun baud rate. - * - * - * Function 12: Configure the port. - * Syntax: - * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); - * int port : port number (0 - 127) - * struct ktermios * termio : termio structure pointer - * speed_t baud : baud rate - * - * return: -1 : this port is invalid or termio == NULL - * 0 : setting O.K. - * - * - * Function 13: Get the DTR/RTS state of this port. - * Syntax: - * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); - * int port : port number (0 - 127) - * int * dtrState : pointer to INT to receive the current DTR - * state. (if NULL, this function will not - * write to this address) - * int * rtsState : pointer to INT to receive the current RTS - * state. (if NULL, this function will not - * write to this address) - * - * return: -1 : this port is invalid - * 0 : O.K. - * - * - * Function 14: Setting the DTR/RTS output state of this port. - * Syntax: - * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); - * int port : port number (0 - 127) - * int dtrState : DTR output state (0: off, 1: on) - * int rtsState : RTS output state (0: off, 1: on) - * - * - * Function 15: Setting the flow control of this port. - * Syntax: - * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, - * int txFlow,int xany); - * int port : port number (0 - 127) - * int rtsFlow : H/W RTS flow control (0: no, 1: yes) - * int ctsFlow : H/W CTS flow control (0: no, 1: yes) - * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) - * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) - * int xany : S/W XANY flow control (0: no, 1: yes) - * - * - * Function 16: Get ths line status of this port - * Syntax: - * int MoxaPortLineStatus(int port); - * int port : port number (0 - 127) - * - * return: Bit 0 - CTS state (0: off, 1: on) - * Bit 1 - DSR state (0: off, 1: on) - * Bit 2 - DCD state (0: off, 1: on) - * - * - * Function 19: Flush the Rx/Tx buffer data of this port. - * Syntax: - * void MoxaPortFlushData(int port, int mode); - * int port : port number (0 - 127) - * int mode - * 0 : flush the Rx buffer - * 1 : flush the Tx buffer - * 2 : flush the Rx and Tx buffer - * - * - * Function 20: Write data. - * Syntax: - * int MoxaPortWriteData(int port, unsigned char * buffer, int length); - * int port : port number (0 - 127) - * unsigned char * buffer : pointer to write data buffer. - * int length : write data length - * - * return: 0 - length : real write data length - * - * - * Function 21: Read data. - * Syntax: - * int MoxaPortReadData(int port, struct tty_struct *tty); - * int port : port number (0 - 127) - * struct tty_struct *tty : tty for data - * - * return: 0 - length : real read data length - * - * - * Function 24: Get the Tx buffer current queued data bytes - * Syntax: - * int MoxaPortTxQueue(int port); - * int port : port number (0 - 127) - * - * return: .. : Tx buffer current queued data bytes - * - * - * Function 25: Get the Tx buffer current free space - * Syntax: - * int MoxaPortTxFree(int port); - * int port : port number (0 - 127) - * - * return: .. : Tx buffer current free space - * - * - * Function 26: Get the Rx buffer current queued data bytes - * Syntax: - * int MoxaPortRxQueue(int port); - * int port : port number (0 - 127) - * - * return: .. : Rx buffer current queued data bytes - * - * - * Function 28: Disable port data transmission. - * Syntax: - * void MoxaPortTxDisable(int port); - * int port : port number (0 - 127) - * - * - * Function 29: Enable port data transmission. - * Syntax: - * void MoxaPortTxEnable(int port); - * int port : port number (0 - 127) - * - * - * Function 31: Get the received BREAK signal count and reset it. - * Syntax: - * int MoxaPortResetBrkCnt(int port); - * int port : port number (0 - 127) - * - * return: 0 - .. : BREAK signal count - * - * - */ - -static void MoxaPortEnable(struct moxa_port *port) -{ - void __iomem *ofsAddr; - u16 lowwater = 512; - - ofsAddr = port->tableAddr; - writew(lowwater, ofsAddr + Low_water); - if (MOXA_IS_320(port->board)) - moxafunc(ofsAddr, FC_SetBreakIrq, 0); - else - writew(readw(ofsAddr + HostStat) | WakeupBreak, - ofsAddr + HostStat); - - moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); - moxafunc(ofsAddr, FC_FlushQueue, 2); - - moxafunc(ofsAddr, FC_EnableCH, Magic_code); - MoxaPortLineStatus(port); -} - -static void MoxaPortDisable(struct moxa_port *port) -{ - void __iomem *ofsAddr = port->tableAddr; - - moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ - moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); - writew(0, ofsAddr + HostStat); - moxafunc(ofsAddr, FC_DisableCH, Magic_code); -} - -static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) -{ - void __iomem *ofsAddr = port->tableAddr; - unsigned int clock, val; - speed_t max; - - max = MOXA_IS_320(port->board) ? 460800 : 921600; - if (baud < 50) - return 0; - if (baud > max) - baud = max; - clock = 921600; - val = clock / baud; - moxafunc(ofsAddr, FC_SetBaud, val); - baud = clock / val; - return baud; -} - -static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, - speed_t baud) -{ - void __iomem *ofsAddr; - tcflag_t cflag; - tcflag_t mode = 0; - - ofsAddr = port->tableAddr; - cflag = termio->c_cflag; /* termio->c_cflag */ - - mode = termio->c_cflag & CSIZE; - if (mode == CS5) - mode = MX_CS5; - else if (mode == CS6) - mode = MX_CS6; - else if (mode == CS7) - mode = MX_CS7; - else if (mode == CS8) - mode = MX_CS8; - - if (termio->c_cflag & CSTOPB) { - if (mode == MX_CS5) - mode |= MX_STOP15; - else - mode |= MX_STOP2; - } else - mode |= MX_STOP1; - - if (termio->c_cflag & PARENB) { - if (termio->c_cflag & PARODD) - mode |= MX_PARODD; - else - mode |= MX_PAREVEN; - } else - mode |= MX_PARNONE; - - moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); - - if (MOXA_IS_320(port->board) && baud >= 921600) - return -1; - - baud = MoxaPortSetBaud(port, baud); - - if (termio->c_iflag & (IXON | IXOFF | IXANY)) { - spin_lock_irq(&moxafunc_lock); - writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); - writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); - writeb(FC_SetXonXoff, ofsAddr + FuncCode); - moxa_wait_finish(ofsAddr); - spin_unlock_irq(&moxafunc_lock); - - } - return baud; -} - -static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, - int *rtsState) -{ - if (dtrState) - *dtrState = !!(port->lineCtrl & DTR_ON); - if (rtsState) - *rtsState = !!(port->lineCtrl & RTS_ON); - - return 0; -} - -static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) -{ - u8 mode = 0; - - if (dtr) - mode |= DTR_ON; - if (rts) - mode |= RTS_ON; - port->lineCtrl = mode; - moxafunc(port->tableAddr, FC_LineControl, mode); -} - -static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, - int txflow, int rxflow, int txany) -{ - int mode = 0; - - if (rts) - mode |= RTS_FlowCtl; - if (cts) - mode |= CTS_FlowCtl; - if (txflow) - mode |= Tx_FlowCtl; - if (rxflow) - mode |= Rx_FlowCtl; - if (txany) - mode |= IXM_IXANY; - moxafunc(port->tableAddr, FC_SetFlowCtl, mode); -} - -static int MoxaPortLineStatus(struct moxa_port *port) -{ - void __iomem *ofsAddr; - int val; - - ofsAddr = port->tableAddr; - if (MOXA_IS_320(port->board)) - val = moxafuncret(ofsAddr, FC_LineStatus, 0); - else - val = readw(ofsAddr + FlagStat) >> 4; - val &= 0x0B; - if (val & 8) - val |= 4; - moxa_new_dcdstate(port, val & 8); - val &= 7; - return val; -} - -static int MoxaPortWriteData(struct tty_struct *tty, - const unsigned char *buffer, int len) -{ - struct moxa_port *port = tty->driver_data; - void __iomem *baseAddr, *ofsAddr, *ofs; - unsigned int c, total; - u16 head, tail, tx_mask, spage, epage; - u16 pageno, pageofs, bufhead; - - ofsAddr = port->tableAddr; - baseAddr = port->board->basemem; - tx_mask = readw(ofsAddr + TX_mask); - spage = readw(ofsAddr + Page_txb); - epage = readw(ofsAddr + EndPage_txb); - tail = readw(ofsAddr + TXwptr); - head = readw(ofsAddr + TXrptr); - c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); - if (c > len) - c = len; - moxaLog.txcnt[port->port.tty->index] += c; - total = c; - if (spage == epage) { - bufhead = readw(ofsAddr + Ofs_txb); - writew(spage, baseAddr + Control_reg); - while (c > 0) { - if (head > tail) - len = head - tail - 1; - else - len = tx_mask + 1 - tail; - len = (c > len) ? len : c; - ofs = baseAddr + DynPage_addr + bufhead + tail; - memcpy_toio(ofs, buffer, len); - buffer += len; - tail = (tail + len) & tx_mask; - c -= len; - } - } else { - pageno = spage + (tail >> 13); - pageofs = tail & Page_mask; - while (c > 0) { - len = Page_size - pageofs; - if (len > c) - len = c; - writeb(pageno, baseAddr + Control_reg); - ofs = baseAddr + DynPage_addr + pageofs; - memcpy_toio(ofs, buffer, len); - buffer += len; - if (++pageno == epage) - pageno = spage; - pageofs = 0; - c -= len; - } - tail = (tail + total) & tx_mask; - } - writew(tail, ofsAddr + TXwptr); - writeb(1, ofsAddr + CD180TXirq); /* start to send */ - return total; -} - -static int MoxaPortReadData(struct moxa_port *port) -{ - struct tty_struct *tty = port->port.tty; - unsigned char *dst; - void __iomem *baseAddr, *ofsAddr, *ofs; - unsigned int count, len, total; - u16 tail, rx_mask, spage, epage; - u16 pageno, pageofs, bufhead, head; - - ofsAddr = port->tableAddr; - baseAddr = port->board->basemem; - head = readw(ofsAddr + RXrptr); - tail = readw(ofsAddr + RXwptr); - rx_mask = readw(ofsAddr + RX_mask); - spage = readw(ofsAddr + Page_rxb); - epage = readw(ofsAddr + EndPage_rxb); - count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); - if (count == 0) - return 0; - - total = count; - moxaLog.rxcnt[tty->index] += total; - if (spage == epage) { - bufhead = readw(ofsAddr + Ofs_rxb); - writew(spage, baseAddr + Control_reg); - while (count > 0) { - ofs = baseAddr + DynPage_addr + bufhead + head; - len = (tail >= head) ? (tail - head) : - (rx_mask + 1 - head); - len = tty_prepare_flip_string(tty, &dst, - min(len, count)); - memcpy_fromio(dst, ofs, len); - head = (head + len) & rx_mask; - count -= len; - } - } else { - pageno = spage + (head >> 13); - pageofs = head & Page_mask; - while (count > 0) { - writew(pageno, baseAddr + Control_reg); - ofs = baseAddr + DynPage_addr + pageofs; - len = tty_prepare_flip_string(tty, &dst, - min(Page_size - pageofs, count)); - memcpy_fromio(dst, ofs, len); - - count -= len; - pageofs = (pageofs + len) & Page_mask; - if (pageofs == 0 && ++pageno == epage) - pageno = spage; - } - head = (head + total) & rx_mask; - } - writew(head, ofsAddr + RXrptr); - if (readb(ofsAddr + FlagStat) & Xoff_state) { - moxaLowWaterChk = 1; - port->lowChkFlag = 1; - } - return total; -} - - -static int MoxaPortTxQueue(struct moxa_port *port) -{ - void __iomem *ofsAddr = port->tableAddr; - u16 rptr, wptr, mask; - - rptr = readw(ofsAddr + TXrptr); - wptr = readw(ofsAddr + TXwptr); - mask = readw(ofsAddr + TX_mask); - return (wptr - rptr) & mask; -} - -static int MoxaPortTxFree(struct moxa_port *port) -{ - void __iomem *ofsAddr = port->tableAddr; - u16 rptr, wptr, mask; - - rptr = readw(ofsAddr + TXrptr); - wptr = readw(ofsAddr + TXwptr); - mask = readw(ofsAddr + TX_mask); - return mask - ((wptr - rptr) & mask); -} - -static int MoxaPortRxQueue(struct moxa_port *port) -{ - void __iomem *ofsAddr = port->tableAddr; - u16 rptr, wptr, mask; - - rptr = readw(ofsAddr + RXrptr); - wptr = readw(ofsAddr + RXwptr); - mask = readw(ofsAddr + RX_mask); - return (wptr - rptr) & mask; -} - -static void MoxaPortTxDisable(struct moxa_port *port) -{ - moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); -} - -static void MoxaPortTxEnable(struct moxa_port *port) -{ - moxafunc(port->tableAddr, FC_SetXonState, Magic_code); -} - -static int moxa_get_serial_info(struct moxa_port *info, - struct serial_struct __user *retinfo) -{ - struct serial_struct tmp = { - .type = info->type, - .line = info->port.tty->index, - .flags = info->port.flags, - .baud_base = 921600, - .close_delay = info->port.close_delay - }; - return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; -} - - -static int moxa_set_serial_info(struct moxa_port *info, - struct serial_struct __user *new_info) -{ - struct serial_struct new_serial; - - if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) - return -EFAULT; - - if (new_serial.irq != 0 || new_serial.port != 0 || - new_serial.custom_divisor != 0 || - new_serial.baud_base != 921600) - return -EPERM; - - if (!capable(CAP_SYS_ADMIN)) { - if (((new_serial.flags & ~ASYNC_USR_MASK) != - (info->port.flags & ~ASYNC_USR_MASK))) - return -EPERM; - } else - info->port.close_delay = new_serial.close_delay * HZ / 100; - - new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); - new_serial.flags |= (info->port.flags & ASYNC_FLAGS); - - MoxaSetFifo(info, new_serial.type == PORT_16550A); - - info->type = new_serial.type; - return 0; -} - - - -/***************************************************************************** - * Static local functions: * - *****************************************************************************/ - -static void MoxaSetFifo(struct moxa_port *port, int enable) -{ - void __iomem *ofsAddr = port->tableAddr; - - if (!enable) { - moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); - moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); - } else { - moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); - moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); - } -} diff --git a/drivers/char/moxa.h b/drivers/char/moxa.h deleted file mode 100644 index 87d16ce57be7..000000000000 --- a/drivers/char/moxa.h +++ /dev/null @@ -1,304 +0,0 @@ -#ifndef MOXA_H_FILE -#define MOXA_H_FILE - -#define MOXA 0x400 -#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */ -#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */ -#define MOXA_GETDATACOUNT (MOXA + 23) -#define MOXA_GET_IOQUEUE (MOXA + 27) -#define MOXA_FLUSH_QUEUE (MOXA + 28) -#define MOXA_GETMSTATUS (MOXA + 65) - -/* - * System Configuration - */ - -#define Magic_code 0x404 - -/* - * for C218 BIOS initialization - */ -#define C218_ConfBase 0x800 -#define C218_status (C218_ConfBase + 0) /* BIOS running status */ -#define C218_diag (C218_ConfBase + 2) /* diagnostic status */ -#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */ -#define C218DLoad_len (C218_ConfBase + 6) /* WORD */ -#define C218check_sum (C218_ConfBase + 8) /* BYTE */ -#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */ -#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */ -#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */ -#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */ -#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */ - -#define C218_LoadBuf 0x0F00 -#define C218_KeyCode 0x218 -#define CP204J_KeyCode 0x204 - -/* - * for C320 BIOS initialization - */ -#define C320_ConfBase 0x800 -#define C320_LoadBuf 0x0f00 -#define STS_init 0x05 /* for C320_status */ - -#define C320_status C320_ConfBase + 0 /* BIOS running status */ -#define C320_diag C320_ConfBase + 2 /* diagnostic status */ -#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */ -#define C320DLoad_len C320_ConfBase + 6 /* WORD */ -#define C320check_sum C320_ConfBase + 8 /* WORD */ -#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */ -#define C320bapi_len C320_ConfBase + 0x0c /* WORD */ -#define C320UART_no C320_ConfBase + 0x0e /* WORD */ - -#define C320_KeyCode 0x320 - -#define FixPage_addr 0x0000 /* starting addr of static page */ -#define DynPage_addr 0x2000 /* starting addr of dynamic page */ -#define C218_start 0x3000 /* starting addr of C218 BIOS prg */ -#define Control_reg 0x1ff0 /* select page and reset control */ -#define HW_reset 0x80 - -/* - * Function Codes - */ -#define FC_CardReset 0x80 -#define FC_ChannelReset 1 /* C320 firmware not supported */ -#define FC_EnableCH 2 -#define FC_DisableCH 3 -#define FC_SetParam 4 -#define FC_SetMode 5 -#define FC_SetRate 6 -#define FC_LineControl 7 -#define FC_LineStatus 8 -#define FC_XmitControl 9 -#define FC_FlushQueue 10 -#define FC_SendBreak 11 -#define FC_StopBreak 12 -#define FC_LoopbackON 13 -#define FC_LoopbackOFF 14 -#define FC_ClrIrqTable 15 -#define FC_SendXon 16 -#define FC_SetTermIrq 17 /* C320 firmware not supported */ -#define FC_SetCntIrq 18 /* C320 firmware not supported */ -#define FC_SetBreakIrq 19 -#define FC_SetLineIrq 20 -#define FC_SetFlowCtl 21 -#define FC_GenIrq 22 -#define FC_InCD180 23 -#define FC_OutCD180 24 -#define FC_InUARTreg 23 -#define FC_OutUARTreg 24 -#define FC_SetXonXoff 25 -#define FC_OutCD180CCR 26 -#define FC_ExtIQueue 27 -#define FC_ExtOQueue 28 -#define FC_ClrLineIrq 29 -#define FC_HWFlowCtl 30 -#define FC_GetClockRate 35 -#define FC_SetBaud 36 -#define FC_SetDataMode 41 -#define FC_GetCCSR 43 -#define FC_GetDataError 45 -#define FC_RxControl 50 -#define FC_ImmSend 51 -#define FC_SetXonState 52 -#define FC_SetXoffState 53 -#define FC_SetRxFIFOTrig 54 -#define FC_SetTxFIFOCnt 55 -#define FC_UnixRate 56 -#define FC_UnixResetTimer 57 - -#define RxFIFOTrig1 0 -#define RxFIFOTrig4 1 -#define RxFIFOTrig8 2 -#define RxFIFOTrig14 3 - -/* - * Dual-Ported RAM - */ -#define DRAM_global 0 -#define INT_data (DRAM_global + 0) -#define Config_base (DRAM_global + 0x108) - -#define IRQindex (INT_data + 0) -#define IRQpending (INT_data + 4) -#define IRQtable (INT_data + 8) - -/* - * Interrupt Status - */ -#define IntrRx 0x01 /* receiver data O.K. */ -#define IntrTx 0x02 /* transmit buffer empty */ -#define IntrFunc 0x04 /* function complete */ -#define IntrBreak 0x08 /* received break */ -#define IntrLine 0x10 /* line status change - for transmitter */ -#define IntrIntr 0x20 /* received INTR code */ -#define IntrQuit 0x40 /* received QUIT code */ -#define IntrEOF 0x80 /* received EOF code */ - -#define IntrRxTrigger 0x100 /* rx data count reach tigger value */ -#define IntrTxTrigger 0x200 /* tx data count below trigger value */ - -#define Magic_no (Config_base + 0) -#define Card_model_no (Config_base + 2) -#define Total_ports (Config_base + 4) -#define Module_cnt (Config_base + 8) -#define Module_no (Config_base + 10) -#define Timer_10ms (Config_base + 14) -#define Disable_IRQ (Config_base + 20) -#define TMS320_PORT1 (Config_base + 22) -#define TMS320_PORT2 (Config_base + 24) -#define TMS320_CLOCK (Config_base + 26) - -/* - * DATA BUFFER in DRAM - */ -#define Extern_table 0x400 /* Base address of the external table - (24 words * 64) total 3K bytes - (24 words * 128) total 6K bytes */ -#define Extern_size 0x60 /* 96 bytes */ -#define RXrptr 0x00 /* read pointer for RX buffer */ -#define RXwptr 0x02 /* write pointer for RX buffer */ -#define TXrptr 0x04 /* read pointer for TX buffer */ -#define TXwptr 0x06 /* write pointer for TX buffer */ -#define HostStat 0x08 /* IRQ flag and general flag */ -#define FlagStat 0x0A -#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */ - /* x x x x | | | | */ - /* | | | + CTS flow */ - /* | | +--- RTS flow */ - /* | +------ TX Xon/Xoff */ - /* +--------- RX Xon/Xoff */ -#define Break_cnt 0x0E /* received break count */ -#define CD180TXirq 0x10 /* if non-0: enable TX irq */ -#define RX_mask 0x12 -#define TX_mask 0x14 -#define Ofs_rxb 0x16 -#define Ofs_txb 0x18 -#define Page_rxb 0x1A -#define Page_txb 0x1C -#define EndPage_rxb 0x1E -#define EndPage_txb 0x20 -#define Data_error 0x22 -#define RxTrigger 0x28 -#define TxTrigger 0x2a - -#define rRXwptr 0x34 -#define Low_water 0x36 - -#define FuncCode 0x40 -#define FuncArg 0x42 -#define FuncArg1 0x44 - -#define C218rx_size 0x2000 /* 8K bytes */ -#define C218tx_size 0x8000 /* 32K bytes */ - -#define C218rx_mask (C218rx_size - 1) -#define C218tx_mask (C218tx_size - 1) - -#define C320p8rx_size 0x2000 -#define C320p8tx_size 0x8000 -#define C320p8rx_mask (C320p8rx_size - 1) -#define C320p8tx_mask (C320p8tx_size - 1) - -#define C320p16rx_size 0x2000 -#define C320p16tx_size 0x4000 -#define C320p16rx_mask (C320p16rx_size - 1) -#define C320p16tx_mask (C320p16tx_size - 1) - -#define C320p24rx_size 0x2000 -#define C320p24tx_size 0x2000 -#define C320p24rx_mask (C320p24rx_size - 1) -#define C320p24tx_mask (C320p24tx_size - 1) - -#define C320p32rx_size 0x1000 -#define C320p32tx_size 0x1000 -#define C320p32rx_mask (C320p32rx_size - 1) -#define C320p32tx_mask (C320p32tx_size - 1) - -#define Page_size 0x2000U -#define Page_mask (Page_size - 1) -#define C218rx_spage 3 -#define C218tx_spage 4 -#define C218rx_pageno 1 -#define C218tx_pageno 4 -#define C218buf_pageno 5 - -#define C320p8rx_spage 3 -#define C320p8tx_spage 4 -#define C320p8rx_pgno 1 -#define C320p8tx_pgno 4 -#define C320p8buf_pgno 5 - -#define C320p16rx_spage 3 -#define C320p16tx_spage 4 -#define C320p16rx_pgno 1 -#define C320p16tx_pgno 2 -#define C320p16buf_pgno 3 - -#define C320p24rx_spage 3 -#define C320p24tx_spage 4 -#define C320p24rx_pgno 1 -#define C320p24tx_pgno 1 -#define C320p24buf_pgno 2 - -#define C320p32rx_spage 3 -#define C320p32tx_ofs C320p32rx_size -#define C320p32tx_spage 3 -#define C320p32buf_pgno 1 - -/* - * Host Status - */ -#define WakeupRx 0x01 -#define WakeupTx 0x02 -#define WakeupBreak 0x08 -#define WakeupLine 0x10 -#define WakeupIntr 0x20 -#define WakeupQuit 0x40 -#define WakeupEOF 0x80 /* used in VTIME control */ -#define WakeupRxTrigger 0x100 -#define WakeupTxTrigger 0x200 -/* - * Flag status - */ -#define Rx_over 0x01 -#define Xoff_state 0x02 -#define Tx_flowOff 0x04 -#define Tx_enable 0x08 -#define CTS_state 0x10 -#define DSR_state 0x20 -#define DCD_state 0x80 -/* - * FlowControl - */ -#define CTS_FlowCtl 1 -#define RTS_FlowCtl 2 -#define Tx_FlowCtl 4 -#define Rx_FlowCtl 8 -#define IXM_IXANY 0x10 - -#define LowWater 128 - -#define DTR_ON 1 -#define RTS_ON 2 -#define CTS_ON 1 -#define DSR_ON 2 -#define DCD_ON 8 - -/* mode definition */ -#define MX_CS8 0x03 -#define MX_CS7 0x02 -#define MX_CS6 0x01 -#define MX_CS5 0x00 - -#define MX_STOP1 0x00 -#define MX_STOP15 0x04 -#define MX_STOP2 0x08 - -#define MX_PARNONE 0x00 -#define MX_PAREVEN 0x40 -#define MX_PARODD 0xC0 - -#endif diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c deleted file mode 100644 index d188f378684d..000000000000 --- a/drivers/char/mxser.c +++ /dev/null @@ -1,2757 +0,0 @@ -/* - * mxser.c -- MOXA Smartio/Industio family multiport serial driver. - * - * Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com). - * Copyright (C) 2006-2008 Jiri Slaby - * - * This code is loosely based on the 1.8 moxa driver which is based on - * Linux serial driver, written by Linus Torvalds, Theodore T'so and - * others. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox - * . The original 1.8 code is available on - * www.moxa.com. - * - Fixed x86_64 cleanness - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include "mxser.h" - -#define MXSER_VERSION "2.0.5" /* 1.14 */ -#define MXSERMAJOR 174 - -#define MXSER_BOARDS 4 /* Max. boards */ -#define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ -#define MXSER_PORTS (MXSER_BOARDS * MXSER_PORTS_PER_BOARD) -#define MXSER_ISR_PASS_LIMIT 100 - -/*CheckIsMoxaMust return value*/ -#define MOXA_OTHER_UART 0x00 -#define MOXA_MUST_MU150_HWID 0x01 -#define MOXA_MUST_MU860_HWID 0x02 - -#define WAKEUP_CHARS 256 - -#define UART_MCR_AFE 0x20 -#define UART_LSR_SPECIAL 0x1E - -#define PCI_DEVICE_ID_POS104UL 0x1044 -#define PCI_DEVICE_ID_CB108 0x1080 -#define PCI_DEVICE_ID_CP102UF 0x1023 -#define PCI_DEVICE_ID_CP112UL 0x1120 -#define PCI_DEVICE_ID_CB114 0x1142 -#define PCI_DEVICE_ID_CP114UL 0x1143 -#define PCI_DEVICE_ID_CB134I 0x1341 -#define PCI_DEVICE_ID_CP138U 0x1380 - - -#define C168_ASIC_ID 1 -#define C104_ASIC_ID 2 -#define C102_ASIC_ID 0xB -#define CI132_ASIC_ID 4 -#define CI134_ASIC_ID 3 -#define CI104J_ASIC_ID 5 - -#define MXSER_HIGHBAUD 1 -#define MXSER_HAS2 2 - -/* This is only for PCI */ -static const struct { - int type; - int tx_fifo; - int rx_fifo; - int xmit_fifo_size; - int rx_high_water; - int rx_trigger; - int rx_low_water; - long max_baud; -} Gpci_uart_info[] = { - {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, - {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, - {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} -}; -#define UART_INFO_NUM ARRAY_SIZE(Gpci_uart_info) - -struct mxser_cardinfo { - char *name; - unsigned int nports; - unsigned int flags; -}; - -static const struct mxser_cardinfo mxser_cards[] = { -/* 0*/ { "C168 series", 8, }, - { "C104 series", 4, }, - { "CI-104J series", 4, }, - { "C168H/PCI series", 8, }, - { "C104H/PCI series", 4, }, -/* 5*/ { "C102 series", 4, MXSER_HAS2 }, /* C102-ISA */ - { "CI-132 series", 4, MXSER_HAS2 }, - { "CI-134 series", 4, }, - { "CP-132 series", 2, }, - { "CP-114 series", 4, }, -/*10*/ { "CT-114 series", 4, }, - { "CP-102 series", 2, MXSER_HIGHBAUD }, - { "CP-104U series", 4, }, - { "CP-168U series", 8, }, - { "CP-132U series", 2, }, -/*15*/ { "CP-134U series", 4, }, - { "CP-104JU series", 4, }, - { "Moxa UC7000 Serial", 8, }, /* RC7000 */ - { "CP-118U series", 8, }, - { "CP-102UL series", 2, }, -/*20*/ { "CP-102U series", 2, }, - { "CP-118EL series", 8, }, - { "CP-168EL series", 8, }, - { "CP-104EL series", 4, }, - { "CB-108 series", 8, }, -/*25*/ { "CB-114 series", 4, }, - { "CB-134I series", 4, }, - { "CP-138U series", 8, }, - { "POS-104UL series", 4, }, - { "CP-114UL series", 4, }, -/*30*/ { "CP-102UF series", 2, }, - { "CP-112UL series", 2, }, -}; - -/* driver_data correspond to the lines in the structure above - see also ISA probe function before you change something */ -static struct pci_device_id mxser_pcibrds[] = { - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C168), .driver_data = 3 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C104), .driver_data = 4 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132), .driver_data = 8 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114), .driver_data = 9 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CT114), .driver_data = 10 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102), .driver_data = 11 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104U), .driver_data = 12 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168U), .driver_data = 13 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132U), .driver_data = 14 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134U), .driver_data = 15 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104JU),.driver_data = 16 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_RC7000), .driver_data = 17 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118U), .driver_data = 18 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102UL),.driver_data = 19 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102U), .driver_data = 20 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL),.driver_data = 21 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL),.driver_data = 22 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL),.driver_data = 23 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB108), .driver_data = 24 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB114), .driver_data = 25 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB134I), .driver_data = 26 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP138U), .driver_data = 27 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP114UL), .driver_data = 29 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP102UF), .driver_data = 30 }, - { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP112UL), .driver_data = 31 }, - { } -}; -MODULE_DEVICE_TABLE(pci, mxser_pcibrds); - -static unsigned long ioaddr[MXSER_BOARDS]; -static int ttymajor = MXSERMAJOR; - -/* Variables for insmod */ - -MODULE_AUTHOR("Casper Yang"); -MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); -module_param_array(ioaddr, ulong, NULL, 0); -MODULE_PARM_DESC(ioaddr, "ISA io addresses to look for a moxa board"); -module_param(ttymajor, int, 0); -MODULE_LICENSE("GPL"); - -struct mxser_log { - int tick; - unsigned long rxcnt[MXSER_PORTS]; - unsigned long txcnt[MXSER_PORTS]; -}; - -struct mxser_mon { - unsigned long rxcnt; - unsigned long txcnt; - unsigned long up_rxcnt; - unsigned long up_txcnt; - int modem_status; - unsigned char hold_reason; -}; - -struct mxser_mon_ext { - unsigned long rx_cnt[32]; - unsigned long tx_cnt[32]; - unsigned long up_rxcnt[32]; - unsigned long up_txcnt[32]; - int modem_status[32]; - - long baudrate[32]; - int databits[32]; - int stopbits[32]; - int parity[32]; - int flowctrl[32]; - int fifo[32]; - int iftype[32]; -}; - -struct mxser_board; - -struct mxser_port { - struct tty_port port; - struct mxser_board *board; - - unsigned long ioaddr; - unsigned long opmode_ioaddr; - int max_baud; - - int rx_high_water; - int rx_trigger; /* Rx fifo trigger level */ - int rx_low_water; - int baud_base; /* max. speed */ - int type; /* UART type */ - - int x_char; /* xon/xoff character */ - int IER; /* Interrupt Enable Register */ - int MCR; /* Modem control register */ - - unsigned char stop_rx; - unsigned char ldisc_stop_rx; - - int custom_divisor; - unsigned char err_shadow; - - struct async_icount icount; /* kernel counters for 4 input interrupts */ - int timeout; - - int read_status_mask; - int ignore_status_mask; - int xmit_fifo_size; - int xmit_head; - int xmit_tail; - int xmit_cnt; - - struct ktermios normal_termios; - - struct mxser_mon mon_data; - - spinlock_t slock; -}; - -struct mxser_board { - unsigned int idx; - int irq; - const struct mxser_cardinfo *info; - unsigned long vector; - unsigned long vector_mask; - - int chip_flag; - int uart_type; - - struct mxser_port ports[MXSER_PORTS_PER_BOARD]; -}; - -struct mxser_mstatus { - tcflag_t cflag; - int cts; - int dsr; - int ri; - int dcd; -}; - -static struct mxser_board mxser_boards[MXSER_BOARDS]; -static struct tty_driver *mxvar_sdriver; -static struct mxser_log mxvar_log; -static int mxser_set_baud_method[MXSER_PORTS + 1]; - -static void mxser_enable_must_enchance_mode(unsigned long baseio) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr |= MOXA_MUST_EFR_EFRB_ENABLE; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -#ifdef CONFIG_PCI -static void mxser_disable_must_enchance_mode(unsigned long baseio) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_EFRB_ENABLE; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} -#endif - -static void mxser_set_must_xon1_value(unsigned long baseio, u8 value) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_BANK_MASK; - efr |= MOXA_MUST_EFR_BANK0; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(value, baseio + MOXA_MUST_XON1_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -static void mxser_set_must_xoff1_value(unsigned long baseio, u8 value) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_BANK_MASK; - efr |= MOXA_MUST_EFR_BANK0; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(value, baseio + MOXA_MUST_XOFF1_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -static void mxser_set_must_fifo_value(struct mxser_port *info) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(info->ioaddr + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, info->ioaddr + UART_LCR); - - efr = inb(info->ioaddr + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_BANK_MASK; - efr |= MOXA_MUST_EFR_BANK1; - - outb(efr, info->ioaddr + MOXA_MUST_EFR_REGISTER); - outb((u8)info->rx_high_water, info->ioaddr + MOXA_MUST_RBRTH_REGISTER); - outb((u8)info->rx_trigger, info->ioaddr + MOXA_MUST_RBRTI_REGISTER); - outb((u8)info->rx_low_water, info->ioaddr + MOXA_MUST_RBRTL_REGISTER); - outb(oldlcr, info->ioaddr + UART_LCR); -} - -static void mxser_set_must_enum_value(unsigned long baseio, u8 value) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_BANK_MASK; - efr |= MOXA_MUST_EFR_BANK2; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(value, baseio + MOXA_MUST_ENUM_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -#ifdef CONFIG_PCI -static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_BANK_MASK; - efr |= MOXA_MUST_EFR_BANK2; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - *pId = inb(baseio + MOXA_MUST_HWID_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} -#endif - -static void SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(unsigned long baseio) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_SF_MASK; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -static void mxser_enable_must_tx_software_flow_control(unsigned long baseio) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_SF_TX_MASK; - efr |= MOXA_MUST_EFR_SF_TX1; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -static void mxser_disable_must_tx_software_flow_control(unsigned long baseio) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_SF_TX_MASK; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -static void mxser_enable_must_rx_software_flow_control(unsigned long baseio) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_SF_RX_MASK; - efr |= MOXA_MUST_EFR_SF_RX1; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -static void mxser_disable_must_rx_software_flow_control(unsigned long baseio) -{ - u8 oldlcr; - u8 efr; - - oldlcr = inb(baseio + UART_LCR); - outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); - - efr = inb(baseio + MOXA_MUST_EFR_REGISTER); - efr &= ~MOXA_MUST_EFR_SF_RX_MASK; - - outb(efr, baseio + MOXA_MUST_EFR_REGISTER); - outb(oldlcr, baseio + UART_LCR); -} - -#ifdef CONFIG_PCI -static int __devinit CheckIsMoxaMust(unsigned long io) -{ - u8 oldmcr, hwid; - int i; - - outb(0, io + UART_LCR); - mxser_disable_must_enchance_mode(io); - oldmcr = inb(io + UART_MCR); - outb(0, io + UART_MCR); - mxser_set_must_xon1_value(io, 0x11); - if ((hwid = inb(io + UART_MCR)) != 0) { - outb(oldmcr, io + UART_MCR); - return MOXA_OTHER_UART; - } - - mxser_get_must_hardware_id(io, &hwid); - for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */ - if (hwid == Gpci_uart_info[i].type) - return (int)hwid; - } - return MOXA_OTHER_UART; -} -#endif - -static void process_txrx_fifo(struct mxser_port *info) -{ - int i; - - if ((info->type == PORT_16450) || (info->type == PORT_8250)) { - info->rx_trigger = 1; - info->rx_high_water = 1; - info->rx_low_water = 1; - info->xmit_fifo_size = 1; - } else - for (i = 0; i < UART_INFO_NUM; i++) - if (info->board->chip_flag == Gpci_uart_info[i].type) { - info->rx_trigger = Gpci_uart_info[i].rx_trigger; - info->rx_low_water = Gpci_uart_info[i].rx_low_water; - info->rx_high_water = Gpci_uart_info[i].rx_high_water; - info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size; - break; - } -} - -static unsigned char mxser_get_msr(int baseaddr, int mode, int port) -{ - static unsigned char mxser_msr[MXSER_PORTS + 1]; - unsigned char status = 0; - - status = inb(baseaddr + UART_MSR); - - mxser_msr[port] &= 0x0F; - mxser_msr[port] |= status; - status = mxser_msr[port]; - if (mode) - mxser_msr[port] = 0; - - return status; -} - -static int mxser_carrier_raised(struct tty_port *port) -{ - struct mxser_port *mp = container_of(port, struct mxser_port, port); - return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0; -} - -static void mxser_dtr_rts(struct tty_port *port, int on) -{ - struct mxser_port *mp = container_of(port, struct mxser_port, port); - unsigned long flags; - - spin_lock_irqsave(&mp->slock, flags); - if (on) - outb(inb(mp->ioaddr + UART_MCR) | - UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR); - else - outb(inb(mp->ioaddr + UART_MCR)&~(UART_MCR_DTR | UART_MCR_RTS), - mp->ioaddr + UART_MCR); - spin_unlock_irqrestore(&mp->slock, flags); -} - -static int mxser_set_baud(struct tty_struct *tty, long newspd) -{ - struct mxser_port *info = tty->driver_data; - int quot = 0, baud; - unsigned char cval; - - if (!info->ioaddr) - return -1; - - if (newspd > info->max_baud) - return -1; - - if (newspd == 134) { - quot = 2 * info->baud_base / 269; - tty_encode_baud_rate(tty, 134, 134); - } else if (newspd) { - quot = info->baud_base / newspd; - if (quot == 0) - quot = 1; - baud = info->baud_base/quot; - tty_encode_baud_rate(tty, baud, baud); - } else { - quot = 0; - } - - info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); - info->timeout += HZ / 50; /* Add .02 seconds of slop */ - - if (quot) { - info->MCR |= UART_MCR_DTR; - outb(info->MCR, info->ioaddr + UART_MCR); - } else { - info->MCR &= ~UART_MCR_DTR; - outb(info->MCR, info->ioaddr + UART_MCR); - return 0; - } - - cval = inb(info->ioaddr + UART_LCR); - - outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */ - - outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */ - outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */ - outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */ - -#ifdef BOTHER - if (C_BAUD(tty) == BOTHER) { - quot = info->baud_base % newspd; - quot *= 8; - if (quot % newspd > newspd / 2) { - quot /= newspd; - quot++; - } else - quot /= newspd; - - mxser_set_must_enum_value(info->ioaddr, quot); - } else -#endif - mxser_set_must_enum_value(info->ioaddr, 0); - - return 0; -} - -/* - * This routine is called to set the UART divisor registers to match - * the specified baud rate for a serial port. - */ -static int mxser_change_speed(struct tty_struct *tty, - struct ktermios *old_termios) -{ - struct mxser_port *info = tty->driver_data; - unsigned cflag, cval, fcr; - int ret = 0; - unsigned char status; - - cflag = tty->termios->c_cflag; - if (!info->ioaddr) - return ret; - - if (mxser_set_baud_method[tty->index] == 0) - mxser_set_baud(tty, tty_get_baud_rate(tty)); - - /* byte size and parity */ - switch (cflag & CSIZE) { - case CS5: - cval = 0x00; - break; - case CS6: - cval = 0x01; - break; - case CS7: - cval = 0x02; - break; - case CS8: - cval = 0x03; - break; - default: - cval = 0x00; - break; /* too keep GCC shut... */ - } - if (cflag & CSTOPB) - cval |= 0x04; - if (cflag & PARENB) - cval |= UART_LCR_PARITY; - if (!(cflag & PARODD)) - cval |= UART_LCR_EPAR; - if (cflag & CMSPAR) - cval |= UART_LCR_SPAR; - - if ((info->type == PORT_8250) || (info->type == PORT_16450)) { - if (info->board->chip_flag) { - fcr = UART_FCR_ENABLE_FIFO; - fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; - mxser_set_must_fifo_value(info); - } else - fcr = 0; - } else { - fcr = UART_FCR_ENABLE_FIFO; - if (info->board->chip_flag) { - fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; - mxser_set_must_fifo_value(info); - } else { - switch (info->rx_trigger) { - case 1: - fcr |= UART_FCR_TRIGGER_1; - break; - case 4: - fcr |= UART_FCR_TRIGGER_4; - break; - case 8: - fcr |= UART_FCR_TRIGGER_8; - break; - default: - fcr |= UART_FCR_TRIGGER_14; - break; - } - } - } - - /* CTS flow control flag and modem status interrupts */ - info->IER &= ~UART_IER_MSI; - info->MCR &= ~UART_MCR_AFE; - if (cflag & CRTSCTS) { - info->port.flags |= ASYNC_CTS_FLOW; - info->IER |= UART_IER_MSI; - if ((info->type == PORT_16550A) || (info->board->chip_flag)) { - info->MCR |= UART_MCR_AFE; - } else { - status = inb(info->ioaddr + UART_MSR); - if (tty->hw_stopped) { - if (status & UART_MSR_CTS) { - tty->hw_stopped = 0; - if (info->type != PORT_16550A && - !info->board->chip_flag) { - outb(info->IER & ~UART_IER_THRI, - info->ioaddr + - UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + - UART_IER); - } - tty_wakeup(tty); - } - } else { - if (!(status & UART_MSR_CTS)) { - tty->hw_stopped = 1; - if ((info->type != PORT_16550A) && - (!info->board->chip_flag)) { - info->IER &= ~UART_IER_THRI; - outb(info->IER, info->ioaddr + - UART_IER); - } - } - } - } - } else { - info->port.flags &= ~ASYNC_CTS_FLOW; - } - outb(info->MCR, info->ioaddr + UART_MCR); - if (cflag & CLOCAL) { - info->port.flags &= ~ASYNC_CHECK_CD; - } else { - info->port.flags |= ASYNC_CHECK_CD; - info->IER |= UART_IER_MSI; - } - outb(info->IER, info->ioaddr + UART_IER); - - /* - * Set up parity check flag - */ - info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; - if (I_INPCK(tty)) - info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; - if (I_BRKINT(tty) || I_PARMRK(tty)) - info->read_status_mask |= UART_LSR_BI; - - info->ignore_status_mask = 0; - - if (I_IGNBRK(tty)) { - info->ignore_status_mask |= UART_LSR_BI; - info->read_status_mask |= UART_LSR_BI; - /* - * If we're ignore parity and break indicators, ignore - * overruns too. (For real raw support). - */ - if (I_IGNPAR(tty)) { - info->ignore_status_mask |= - UART_LSR_OE | - UART_LSR_PE | - UART_LSR_FE; - info->read_status_mask |= - UART_LSR_OE | - UART_LSR_PE | - UART_LSR_FE; - } - } - if (info->board->chip_flag) { - mxser_set_must_xon1_value(info->ioaddr, START_CHAR(tty)); - mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(tty)); - if (I_IXON(tty)) { - mxser_enable_must_rx_software_flow_control( - info->ioaddr); - } else { - mxser_disable_must_rx_software_flow_control( - info->ioaddr); - } - if (I_IXOFF(tty)) { - mxser_enable_must_tx_software_flow_control( - info->ioaddr); - } else { - mxser_disable_must_tx_software_flow_control( - info->ioaddr); - } - } - - - outb(fcr, info->ioaddr + UART_FCR); /* set fcr */ - outb(cval, info->ioaddr + UART_LCR); - - return ret; -} - -static void mxser_check_modem_status(struct tty_struct *tty, - struct mxser_port *port, int status) -{ - /* update input line counters */ - if (status & UART_MSR_TERI) - port->icount.rng++; - if (status & UART_MSR_DDSR) - port->icount.dsr++; - if (status & UART_MSR_DDCD) - port->icount.dcd++; - if (status & UART_MSR_DCTS) - port->icount.cts++; - port->mon_data.modem_status = status; - wake_up_interruptible(&port->port.delta_msr_wait); - - if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { - if (status & UART_MSR_DCD) - wake_up_interruptible(&port->port.open_wait); - } - - if (port->port.flags & ASYNC_CTS_FLOW) { - if (tty->hw_stopped) { - if (status & UART_MSR_CTS) { - tty->hw_stopped = 0; - - if ((port->type != PORT_16550A) && - (!port->board->chip_flag)) { - outb(port->IER & ~UART_IER_THRI, - port->ioaddr + UART_IER); - port->IER |= UART_IER_THRI; - outb(port->IER, port->ioaddr + - UART_IER); - } - tty_wakeup(tty); - } - } else { - if (!(status & UART_MSR_CTS)) { - tty->hw_stopped = 1; - if (port->type != PORT_16550A && - !port->board->chip_flag) { - port->IER &= ~UART_IER_THRI; - outb(port->IER, port->ioaddr + - UART_IER); - } - } - } - } -} - -static int mxser_activate(struct tty_port *port, struct tty_struct *tty) -{ - struct mxser_port *info = container_of(port, struct mxser_port, port); - unsigned long page; - unsigned long flags; - - page = __get_free_page(GFP_KERNEL); - if (!page) - return -ENOMEM; - - spin_lock_irqsave(&info->slock, flags); - - if (!info->ioaddr || !info->type) { - set_bit(TTY_IO_ERROR, &tty->flags); - free_page(page); - spin_unlock_irqrestore(&info->slock, flags); - return 0; - } - info->port.xmit_buf = (unsigned char *) page; - - /* - * Clear the FIFO buffers and disable them - * (they will be reenabled in mxser_change_speed()) - */ - if (info->board->chip_flag) - outb((UART_FCR_CLEAR_RCVR | - UART_FCR_CLEAR_XMIT | - MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR); - else - outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), - info->ioaddr + UART_FCR); - - /* - * At this point there's no way the LSR could still be 0xFF; - * if it is, then bail out, because there's likely no UART - * here. - */ - if (inb(info->ioaddr + UART_LSR) == 0xff) { - spin_unlock_irqrestore(&info->slock, flags); - if (capable(CAP_SYS_ADMIN)) { - set_bit(TTY_IO_ERROR, &tty->flags); - return 0; - } else - return -ENODEV; - } - - /* - * Clear the interrupt registers. - */ - (void) inb(info->ioaddr + UART_LSR); - (void) inb(info->ioaddr + UART_RX); - (void) inb(info->ioaddr + UART_IIR); - (void) inb(info->ioaddr + UART_MSR); - - /* - * Now, initialize the UART - */ - outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */ - info->MCR = UART_MCR_DTR | UART_MCR_RTS; - outb(info->MCR, info->ioaddr + UART_MCR); - - /* - * Finally, enable interrupts - */ - info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; - - if (info->board->chip_flag) - info->IER |= MOXA_MUST_IER_EGDAI; - outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */ - - /* - * And clear the interrupt registers again for luck. - */ - (void) inb(info->ioaddr + UART_LSR); - (void) inb(info->ioaddr + UART_RX); - (void) inb(info->ioaddr + UART_IIR); - (void) inb(info->ioaddr + UART_MSR); - - clear_bit(TTY_IO_ERROR, &tty->flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - - /* - * and set the speed of the serial port - */ - mxser_change_speed(tty, NULL); - spin_unlock_irqrestore(&info->slock, flags); - - return 0; -} - -/* - * This routine will shutdown a serial port - */ -static void mxser_shutdown_port(struct tty_port *port) -{ - struct mxser_port *info = container_of(port, struct mxser_port, port); - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - - /* - * clear delta_msr_wait queue to avoid mem leaks: we may free the irq - * here so the queue might never be waken up - */ - wake_up_interruptible(&info->port.delta_msr_wait); - - /* - * Free the xmit buffer, if necessary - */ - if (info->port.xmit_buf) { - free_page((unsigned long) info->port.xmit_buf); - info->port.xmit_buf = NULL; - } - - info->IER = 0; - outb(0x00, info->ioaddr + UART_IER); - - /* clear Rx/Tx FIFO's */ - if (info->board->chip_flag) - outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | - MOXA_MUST_FCR_GDA_MODE_ENABLE, - info->ioaddr + UART_FCR); - else - outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT, - info->ioaddr + UART_FCR); - - /* read data port to reset things */ - (void) inb(info->ioaddr + UART_RX); - - - if (info->board->chip_flag) - SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr); - - spin_unlock_irqrestore(&info->slock, flags); -} - -/* - * This routine is called whenever a serial port is opened. It - * enables interrupts for a serial port, linking in its async structure into - * the IRQ chain. It also performs the serial-specific - * initialization for the tty structure. - */ -static int mxser_open(struct tty_struct *tty, struct file *filp) -{ - struct mxser_port *info; - int line; - - line = tty->index; - if (line == MXSER_PORTS) - return 0; - if (line < 0 || line > MXSER_PORTS) - return -ENODEV; - info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD]; - if (!info->ioaddr) - return -ENODEV; - - tty->driver_data = info; - return tty_port_open(&info->port, tty, filp); -} - -static void mxser_flush_buffer(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - char fcr; - unsigned long flags; - - - spin_lock_irqsave(&info->slock, flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - - fcr = inb(info->ioaddr + UART_FCR); - outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), - info->ioaddr + UART_FCR); - outb(fcr, info->ioaddr + UART_FCR); - - spin_unlock_irqrestore(&info->slock, flags); - - tty_wakeup(tty); -} - - -static void mxser_close_port(struct tty_port *port) -{ - struct mxser_port *info = container_of(port, struct mxser_port, port); - unsigned long timeout; - /* - * At this point we stop accepting input. To do this, we - * disable the receive line status interrupts, and tell the - * interrupt driver to stop checking the data ready bit in the - * line status register. - */ - info->IER &= ~UART_IER_RLSI; - if (info->board->chip_flag) - info->IER &= ~MOXA_MUST_RECV_ISR; - - outb(info->IER, info->ioaddr + UART_IER); - /* - * Before we drop DTR, make sure the UART transmitter - * has completely drained; this is especially - * important if there is a transmit FIFO! - */ - timeout = jiffies + HZ; - while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) { - schedule_timeout_interruptible(5); - if (time_after(jiffies, timeout)) - break; - } -} - -/* - * This routine is called when the serial port gets closed. First, we - * wait for the last remaining data to be sent. Then, we unlink its - * async structure from the interrupt chain if necessary, and we free - * that IRQ if nothing is left in the chain. - */ -static void mxser_close(struct tty_struct *tty, struct file *filp) -{ - struct mxser_port *info = tty->driver_data; - struct tty_port *port = &info->port; - - if (tty->index == MXSER_PORTS || info == NULL) - return; - if (tty_port_close_start(port, tty, filp) == 0) - return; - mutex_lock(&port->mutex); - mxser_close_port(port); - mxser_flush_buffer(tty); - mxser_shutdown_port(port); - clear_bit(ASYNCB_INITIALIZED, &port->flags); - mutex_unlock(&port->mutex); - /* Right now the tty_port set is done outside of the close_end helper - as we don't yet have everyone using refcounts */ - tty_port_close_end(port, tty); - tty_port_tty_set(port, NULL); -} - -static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - int c, total = 0; - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - if (!info->port.xmit_buf) - return 0; - - while (1) { - c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, - SERIAL_XMIT_SIZE - info->xmit_head)); - if (c <= 0) - break; - - memcpy(info->port.xmit_buf + info->xmit_head, buf, c); - spin_lock_irqsave(&info->slock, flags); - info->xmit_head = (info->xmit_head + c) & - (SERIAL_XMIT_SIZE - 1); - info->xmit_cnt += c; - spin_unlock_irqrestore(&info->slock, flags); - - buf += c; - count -= c; - total += c; - } - - if (info->xmit_cnt && !tty->stopped) { - if (!tty->hw_stopped || - (info->type == PORT_16550A) || - (info->board->chip_flag)) { - spin_lock_irqsave(&info->slock, flags); - outb(info->IER & ~UART_IER_THRI, info->ioaddr + - UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - spin_unlock_irqrestore(&info->slock, flags); - } - } - return total; -} - -static int mxser_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - if (!info->port.xmit_buf) - return 0; - - if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) - return 0; - - spin_lock_irqsave(&info->slock, flags); - info->port.xmit_buf[info->xmit_head++] = ch; - info->xmit_head &= SERIAL_XMIT_SIZE - 1; - info->xmit_cnt++; - spin_unlock_irqrestore(&info->slock, flags); - if (!tty->stopped) { - if (!tty->hw_stopped || - (info->type == PORT_16550A) || - info->board->chip_flag) { - spin_lock_irqsave(&info->slock, flags); - outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - spin_unlock_irqrestore(&info->slock, flags); - } - } - return 1; -} - - -static void mxser_flush_chars(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - if (info->xmit_cnt <= 0 || tty->stopped || !info->port.xmit_buf || - (tty->hw_stopped && info->type != PORT_16550A && - !info->board->chip_flag)) - return; - - spin_lock_irqsave(&info->slock, flags); - - outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - - spin_unlock_irqrestore(&info->slock, flags); -} - -static int mxser_write_room(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - int ret; - - ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; - return ret < 0 ? 0 : ret; -} - -static int mxser_chars_in_buffer(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - return info->xmit_cnt; -} - -/* - * ------------------------------------------------------------ - * friends of mxser_ioctl() - * ------------------------------------------------------------ - */ -static int mxser_get_serial_info(struct tty_struct *tty, - struct serial_struct __user *retinfo) -{ - struct mxser_port *info = tty->driver_data; - struct serial_struct tmp = { - .type = info->type, - .line = tty->index, - .port = info->ioaddr, - .irq = info->board->irq, - .flags = info->port.flags, - .baud_base = info->baud_base, - .close_delay = info->port.close_delay, - .closing_wait = info->port.closing_wait, - .custom_divisor = info->custom_divisor, - .hub6 = 0 - }; - if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) - return -EFAULT; - return 0; -} - -static int mxser_set_serial_info(struct tty_struct *tty, - struct serial_struct __user *new_info) -{ - struct mxser_port *info = tty->driver_data; - struct tty_port *port = &info->port; - struct serial_struct new_serial; - speed_t baud; - unsigned long sl_flags; - unsigned int flags; - int retval = 0; - - if (!new_info || !info->ioaddr) - return -ENODEV; - if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) - return -EFAULT; - - if (new_serial.irq != info->board->irq || - new_serial.port != info->ioaddr) - return -EINVAL; - - flags = port->flags & ASYNC_SPD_MASK; - - if (!capable(CAP_SYS_ADMIN)) { - if ((new_serial.baud_base != info->baud_base) || - (new_serial.close_delay != info->port.close_delay) || - ((new_serial.flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) - return -EPERM; - info->port.flags = ((info->port.flags & ~ASYNC_USR_MASK) | - (new_serial.flags & ASYNC_USR_MASK)); - } else { - /* - * OK, past this point, all the error checking has been done. - * At this point, we start making changes..... - */ - port->flags = ((port->flags & ~ASYNC_FLAGS) | - (new_serial.flags & ASYNC_FLAGS)); - port->close_delay = new_serial.close_delay * HZ / 100; - port->closing_wait = new_serial.closing_wait * HZ / 100; - tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0; - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && - (new_serial.baud_base != info->baud_base || - new_serial.custom_divisor != - info->custom_divisor)) { - if (new_serial.custom_divisor == 0) - return -EINVAL; - baud = new_serial.baud_base / new_serial.custom_divisor; - tty_encode_baud_rate(tty, baud, baud); - } - } - - info->type = new_serial.type; - - process_txrx_fifo(info); - - if (test_bit(ASYNCB_INITIALIZED, &port->flags)) { - if (flags != (port->flags & ASYNC_SPD_MASK)) { - spin_lock_irqsave(&info->slock, sl_flags); - mxser_change_speed(tty, NULL); - spin_unlock_irqrestore(&info->slock, sl_flags); - } - } else { - retval = mxser_activate(port, tty); - if (retval == 0) - set_bit(ASYNCB_INITIALIZED, &port->flags); - } - return retval; -} - -/* - * mxser_get_lsr_info - get line status register info - * - * Purpose: Let user call ioctl() to get info when the UART physically - * is emptied. On bus types like RS485, the transmitter must - * release the bus after transmitting. This must be done when - * the transmit shift register is empty, not be done when the - * transmit holding register is empty. This functionality - * allows an RS485 driver to be written in user space. - */ -static int mxser_get_lsr_info(struct mxser_port *info, - unsigned int __user *value) -{ - unsigned char status; - unsigned int result; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - status = inb(info->ioaddr + UART_LSR); - spin_unlock_irqrestore(&info->slock, flags); - result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); - return put_user(result, value); -} - -static int mxser_tiocmget(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - unsigned char control, status; - unsigned long flags; - - - if (tty->index == MXSER_PORTS) - return -ENOIOCTLCMD; - if (test_bit(TTY_IO_ERROR, &tty->flags)) - return -EIO; - - control = info->MCR; - - spin_lock_irqsave(&info->slock, flags); - status = inb(info->ioaddr + UART_MSR); - if (status & UART_MSR_ANY_DELTA) - mxser_check_modem_status(tty, info, status); - spin_unlock_irqrestore(&info->slock, flags); - return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | - ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | - ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | - ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | - ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | - ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); -} - -static int mxser_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - - if (tty->index == MXSER_PORTS) - return -ENOIOCTLCMD; - if (test_bit(TTY_IO_ERROR, &tty->flags)) - return -EIO; - - spin_lock_irqsave(&info->slock, flags); - - if (set & TIOCM_RTS) - info->MCR |= UART_MCR_RTS; - if (set & TIOCM_DTR) - info->MCR |= UART_MCR_DTR; - - if (clear & TIOCM_RTS) - info->MCR &= ~UART_MCR_RTS; - if (clear & TIOCM_DTR) - info->MCR &= ~UART_MCR_DTR; - - outb(info->MCR, info->ioaddr + UART_MCR); - spin_unlock_irqrestore(&info->slock, flags); - return 0; -} - -static int __init mxser_program_mode(int port) -{ - int id, i, j, n; - - outb(0, port); - outb(0, port); - outb(0, port); - (void)inb(port); - (void)inb(port); - outb(0, port); - (void)inb(port); - - id = inb(port + 1) & 0x1F; - if ((id != C168_ASIC_ID) && - (id != C104_ASIC_ID) && - (id != C102_ASIC_ID) && - (id != CI132_ASIC_ID) && - (id != CI134_ASIC_ID) && - (id != CI104J_ASIC_ID)) - return -1; - for (i = 0, j = 0; i < 4; i++) { - n = inb(port + 2); - if (n == 'M') { - j = 1; - } else if ((j == 1) && (n == 1)) { - j = 2; - break; - } else - j = 0; - } - if (j != 2) - id = -2; - return id; -} - -static void __init mxser_normal_mode(int port) -{ - int i, n; - - outb(0xA5, port + 1); - outb(0x80, port + 3); - outb(12, port + 0); /* 9600 bps */ - outb(0, port + 1); - outb(0x03, port + 3); /* 8 data bits */ - outb(0x13, port + 4); /* loop back mode */ - for (i = 0; i < 16; i++) { - n = inb(port + 5); - if ((n & 0x61) == 0x60) - break; - if ((n & 1) == 1) - (void)inb(port); - } - outb(0x00, port + 4); -} - -#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ -#define CHIP_DO 0x02 /* Serial Data Output in Eprom */ -#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ -#define CHIP_DI 0x08 /* Serial Data Input in Eprom */ -#define EN_CCMD 0x000 /* Chip's command register */ -#define EN0_RSARLO 0x008 /* Remote start address reg 0 */ -#define EN0_RSARHI 0x009 /* Remote start address reg 1 */ -#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ -#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ -#define EN0_DCFG 0x00E /* Data configuration reg WR */ -#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ -#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ -#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ -static int __init mxser_read_register(int port, unsigned short *regs) -{ - int i, k, value, id; - unsigned int j; - - id = mxser_program_mode(port); - if (id < 0) - return id; - for (i = 0; i < 14; i++) { - k = (i & 0x3F) | 0x180; - for (j = 0x100; j > 0; j >>= 1) { - outb(CHIP_CS, port); - if (k & j) { - outb(CHIP_CS | CHIP_DO, port); - outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ - } else { - outb(CHIP_CS, port); - outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ - } - } - (void)inb(port); - value = 0; - for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { - outb(CHIP_CS, port); - outb(CHIP_CS | CHIP_SK, port); - if (inb(port) & CHIP_DI) - value |= j; - } - regs[i] = value; - outb(0, port); - } - mxser_normal_mode(port); - return id; -} - -static int mxser_ioctl_special(unsigned int cmd, void __user *argp) -{ - struct mxser_port *ip; - struct tty_port *port; - struct tty_struct *tty; - int result, status; - unsigned int i, j; - int ret = 0; - - switch (cmd) { - case MOXA_GET_MAJOR: - if (printk_ratelimit()) - printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl " - "%x (GET_MAJOR), fix your userspace\n", - current->comm, cmd); - return put_user(ttymajor, (int __user *)argp); - - case MOXA_CHKPORTENABLE: - result = 0; - for (i = 0; i < MXSER_BOARDS; i++) - for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) - if (mxser_boards[i].ports[j].ioaddr) - result |= (1 << i); - return put_user(result, (unsigned long __user *)argp); - case MOXA_GETDATACOUNT: - /* The receive side is locked by port->slock but it isn't - clear that an exact snapshot is worth copying here */ - if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) - ret = -EFAULT; - return ret; - case MOXA_GETMSTATUS: { - struct mxser_mstatus ms, __user *msu = argp; - for (i = 0; i < MXSER_BOARDS; i++) - for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) { - ip = &mxser_boards[i].ports[j]; - port = &ip->port; - memset(&ms, 0, sizeof(ms)); - - mutex_lock(&port->mutex); - if (!ip->ioaddr) - goto copy; - - tty = tty_port_tty_get(port); - - if (!tty || !tty->termios) - ms.cflag = ip->normal_termios.c_cflag; - else - ms.cflag = tty->termios->c_cflag; - tty_kref_put(tty); - spin_lock_irq(&ip->slock); - status = inb(ip->ioaddr + UART_MSR); - spin_unlock_irq(&ip->slock); - if (status & UART_MSR_DCD) - ms.dcd = 1; - if (status & UART_MSR_DSR) - ms.dsr = 1; - if (status & UART_MSR_CTS) - ms.cts = 1; - copy: - mutex_unlock(&port->mutex); - if (copy_to_user(msu, &ms, sizeof(ms))) - return -EFAULT; - msu++; - } - return 0; - } - case MOXA_ASPP_MON_EXT: { - struct mxser_mon_ext *me; /* it's 2k, stack unfriendly */ - unsigned int cflag, iflag, p; - u8 opmode; - - me = kzalloc(sizeof(*me), GFP_KERNEL); - if (!me) - return -ENOMEM; - - for (i = 0, p = 0; i < MXSER_BOARDS; i++) { - for (j = 0; j < MXSER_PORTS_PER_BOARD; j++, p++) { - if (p >= ARRAY_SIZE(me->rx_cnt)) { - i = MXSER_BOARDS; - break; - } - ip = &mxser_boards[i].ports[j]; - port = &ip->port; - - mutex_lock(&port->mutex); - if (!ip->ioaddr) { - mutex_unlock(&port->mutex); - continue; - } - - spin_lock_irq(&ip->slock); - status = mxser_get_msr(ip->ioaddr, 0, p); - - if (status & UART_MSR_TERI) - ip->icount.rng++; - if (status & UART_MSR_DDSR) - ip->icount.dsr++; - if (status & UART_MSR_DDCD) - ip->icount.dcd++; - if (status & UART_MSR_DCTS) - ip->icount.cts++; - - ip->mon_data.modem_status = status; - me->rx_cnt[p] = ip->mon_data.rxcnt; - me->tx_cnt[p] = ip->mon_data.txcnt; - me->up_rxcnt[p] = ip->mon_data.up_rxcnt; - me->up_txcnt[p] = ip->mon_data.up_txcnt; - me->modem_status[p] = - ip->mon_data.modem_status; - spin_unlock_irq(&ip->slock); - - tty = tty_port_tty_get(&ip->port); - - if (!tty || !tty->termios) { - cflag = ip->normal_termios.c_cflag; - iflag = ip->normal_termios.c_iflag; - me->baudrate[p] = tty_termios_baud_rate(&ip->normal_termios); - } else { - cflag = tty->termios->c_cflag; - iflag = tty->termios->c_iflag; - me->baudrate[p] = tty_get_baud_rate(tty); - } - tty_kref_put(tty); - - me->databits[p] = cflag & CSIZE; - me->stopbits[p] = cflag & CSTOPB; - me->parity[p] = cflag & (PARENB | PARODD | - CMSPAR); - - if (cflag & CRTSCTS) - me->flowctrl[p] |= 0x03; - - if (iflag & (IXON | IXOFF)) - me->flowctrl[p] |= 0x0C; - - if (ip->type == PORT_16550A) - me->fifo[p] = 1; - - opmode = inb(ip->opmode_ioaddr)>>((p % 4) * 2); - opmode &= OP_MODE_MASK; - me->iftype[p] = opmode; - mutex_unlock(&port->mutex); - } - } - if (copy_to_user(argp, me, sizeof(*me))) - ret = -EFAULT; - kfree(me); - return ret; - } - default: - return -ENOIOCTLCMD; - } - return 0; -} - -static int mxser_cflags_changed(struct mxser_port *info, unsigned long arg, - struct async_icount *cprev) -{ - struct async_icount cnow; - unsigned long flags; - int ret; - - spin_lock_irqsave(&info->slock, flags); - cnow = info->icount; /* atomic copy */ - spin_unlock_irqrestore(&info->slock, flags); - - ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); - - *cprev = cnow; - - return ret; -} - -static int mxser_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct mxser_port *info = tty->driver_data; - struct tty_port *port = &info->port; - struct async_icount cnow; - unsigned long flags; - void __user *argp = (void __user *)arg; - int retval; - - if (tty->index == MXSER_PORTS) - return mxser_ioctl_special(cmd, argp); - - if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { - int p; - unsigned long opmode; - static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; - int shiftbit; - unsigned char val, mask; - - p = tty->index % 4; - if (cmd == MOXA_SET_OP_MODE) { - if (get_user(opmode, (int __user *) argp)) - return -EFAULT; - if (opmode != RS232_MODE && - opmode != RS485_2WIRE_MODE && - opmode != RS422_MODE && - opmode != RS485_4WIRE_MODE) - return -EFAULT; - mask = ModeMask[p]; - shiftbit = p * 2; - spin_lock_irq(&info->slock); - val = inb(info->opmode_ioaddr); - val &= mask; - val |= (opmode << shiftbit); - outb(val, info->opmode_ioaddr); - spin_unlock_irq(&info->slock); - } else { - shiftbit = p * 2; - spin_lock_irq(&info->slock); - opmode = inb(info->opmode_ioaddr) >> shiftbit; - spin_unlock_irq(&info->slock); - opmode &= OP_MODE_MASK; - if (put_user(opmode, (int __user *)argp)) - return -EFAULT; - } - return 0; - } - - if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && - test_bit(TTY_IO_ERROR, &tty->flags)) - return -EIO; - - switch (cmd) { - case TIOCGSERIAL: - mutex_lock(&port->mutex); - retval = mxser_get_serial_info(tty, argp); - mutex_unlock(&port->mutex); - return retval; - case TIOCSSERIAL: - mutex_lock(&port->mutex); - retval = mxser_set_serial_info(tty, argp); - mutex_unlock(&port->mutex); - return retval; - case TIOCSERGETLSR: /* Get line status register */ - return mxser_get_lsr_info(info, argp); - /* - * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - * - mask passed in arg for lines of interest - * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) - * Caller should use TIOCGICOUNT to see which one it was - */ - case TIOCMIWAIT: - spin_lock_irqsave(&info->slock, flags); - cnow = info->icount; /* note the counters on entry */ - spin_unlock_irqrestore(&info->slock, flags); - - return wait_event_interruptible(info->port.delta_msr_wait, - mxser_cflags_changed(info, arg, &cnow)); - case MOXA_HighSpeedOn: - return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); - case MOXA_SDS_RSTICOUNTER: - spin_lock_irq(&info->slock); - info->mon_data.rxcnt = 0; - info->mon_data.txcnt = 0; - spin_unlock_irq(&info->slock); - return 0; - - case MOXA_ASPP_OQUEUE:{ - int len, lsr; - - len = mxser_chars_in_buffer(tty); - spin_lock_irq(&info->slock); - lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE; - spin_unlock_irq(&info->slock); - len += (lsr ? 0 : 1); - - return put_user(len, (int __user *)argp); - } - case MOXA_ASPP_MON: { - int mcr, status; - - spin_lock_irq(&info->slock); - status = mxser_get_msr(info->ioaddr, 1, tty->index); - mxser_check_modem_status(tty, info, status); - - mcr = inb(info->ioaddr + UART_MCR); - spin_unlock_irq(&info->slock); - - if (mcr & MOXA_MUST_MCR_XON_FLAG) - info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; - else - info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD; - - if (mcr & MOXA_MUST_MCR_TX_XON) - info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; - else - info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; - - if (tty->hw_stopped) - info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; - else - info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; - - if (copy_to_user(argp, &info->mon_data, - sizeof(struct mxser_mon))) - return -EFAULT; - - return 0; - } - case MOXA_ASPP_LSTATUS: { - if (put_user(info->err_shadow, (unsigned char __user *)argp)) - return -EFAULT; - - info->err_shadow = 0; - return 0; - } - case MOXA_SET_BAUD_METHOD: { - int method; - - if (get_user(method, (int __user *)argp)) - return -EFAULT; - mxser_set_baud_method[tty->index] = method; - return put_user(method, (int __user *)argp); - } - default: - return -ENOIOCTLCMD; - } - return 0; -} - - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - -static int mxser_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) - -{ - struct mxser_port *info = tty->driver_data; - struct async_icount cnow; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->slock, flags); - - icount->frame = cnow.frame; - icount->brk = cnow.brk; - icount->overrun = cnow.overrun; - icount->buf_overrun = cnow.buf_overrun; - icount->parity = cnow.parity; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - return 0; -} - -static void mxser_stoprx(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - - info->ldisc_stop_rx = 1; - if (I_IXOFF(tty)) { - if (info->board->chip_flag) { - info->IER &= ~MOXA_MUST_RECV_ISR; - outb(info->IER, info->ioaddr + UART_IER); - } else { - info->x_char = STOP_CHAR(tty); - outb(0, info->ioaddr + UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - } - } - - if (tty->termios->c_cflag & CRTSCTS) { - info->MCR &= ~UART_MCR_RTS; - outb(info->MCR, info->ioaddr + UART_MCR); - } -} - -/* - * This routine is called by the upper-layer tty layer to signal that - * incoming characters should be throttled. - */ -static void mxser_throttle(struct tty_struct *tty) -{ - mxser_stoprx(tty); -} - -static void mxser_unthrottle(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - - /* startrx */ - info->ldisc_stop_rx = 0; - if (I_IXOFF(tty)) { - if (info->x_char) - info->x_char = 0; - else { - if (info->board->chip_flag) { - info->IER |= MOXA_MUST_RECV_ISR; - outb(info->IER, info->ioaddr + UART_IER); - } else { - info->x_char = START_CHAR(tty); - outb(0, info->ioaddr + UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - } - } - } - - if (tty->termios->c_cflag & CRTSCTS) { - info->MCR |= UART_MCR_RTS; - outb(info->MCR, info->ioaddr + UART_MCR); - } -} - -/* - * mxser_stop() and mxser_start() - * - * This routines are called before setting or resetting tty->stopped. - * They enable or disable transmitter interrupts, as necessary. - */ -static void mxser_stop(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - if (info->IER & UART_IER_THRI) { - info->IER &= ~UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - } - spin_unlock_irqrestore(&info->slock, flags); -} - -static void mxser_start(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - if (info->xmit_cnt && info->port.xmit_buf) { - outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); - info->IER |= UART_IER_THRI; - outb(info->IER, info->ioaddr + UART_IER); - } - spin_unlock_irqrestore(&info->slock, flags); -} - -static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - mxser_change_speed(tty, old_termios); - spin_unlock_irqrestore(&info->slock, flags); - - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - mxser_start(tty); - } - - /* Handle sw stopped */ - if ((old_termios->c_iflag & IXON) && - !(tty->termios->c_iflag & IXON)) { - tty->stopped = 0; - - if (info->board->chip_flag) { - spin_lock_irqsave(&info->slock, flags); - mxser_disable_must_rx_software_flow_control( - info->ioaddr); - spin_unlock_irqrestore(&info->slock, flags); - } - - mxser_start(tty); - } -} - -/* - * mxser_wait_until_sent() --- wait until the transmitter is empty - */ -static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) -{ - struct mxser_port *info = tty->driver_data; - unsigned long orig_jiffies, char_time; - unsigned long flags; - int lsr; - - if (info->type == PORT_UNKNOWN) - return; - - if (info->xmit_fifo_size == 0) - return; /* Just in case.... */ - - orig_jiffies = jiffies; - /* - * Set the check interval to be 1/5 of the estimated time to - * send a single character, and make it at least 1. The check - * interval should also be less than the timeout. - * - * Note: we have to use pretty tight timings here to satisfy - * the NIST-PCTS. - */ - char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; - char_time = char_time / 5; - if (char_time == 0) - char_time = 1; - if (timeout && timeout < char_time) - char_time = timeout; - /* - * If the transmitter hasn't cleared in twice the approximate - * amount of time to send the entire FIFO, it probably won't - * ever clear. This assumes the UART isn't doing flow - * control, which is currently the case. Hence, if it ever - * takes longer than info->timeout, this is probably due to a - * UART bug of some kind. So, we clamp the timeout parameter at - * 2*info->timeout. - */ - if (!timeout || timeout > 2 * info->timeout) - timeout = 2 * info->timeout; -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT - printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...", - timeout, char_time); - printk("jiff=%lu...", jiffies); -#endif - spin_lock_irqsave(&info->slock, flags); - while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) { -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT - printk("lsr = %d (jiff=%lu)...", lsr, jiffies); -#endif - spin_unlock_irqrestore(&info->slock, flags); - schedule_timeout_interruptible(char_time); - spin_lock_irqsave(&info->slock, flags); - if (signal_pending(current)) - break; - if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; - } - spin_unlock_irqrestore(&info->slock, flags); - set_current_state(TASK_RUNNING); - -#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT - printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); -#endif -} - -/* - * This routine is called by tty_hangup() when a hangup is signaled. - */ -static void mxser_hangup(struct tty_struct *tty) -{ - struct mxser_port *info = tty->driver_data; - - mxser_flush_buffer(tty); - tty_port_hangup(&info->port); -} - -/* - * mxser_rs_break() --- routine which turns the break handling on or off - */ -static int mxser_rs_break(struct tty_struct *tty, int break_state) -{ - struct mxser_port *info = tty->driver_data; - unsigned long flags; - - spin_lock_irqsave(&info->slock, flags); - if (break_state == -1) - outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC, - info->ioaddr + UART_LCR); - else - outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC, - info->ioaddr + UART_LCR); - spin_unlock_irqrestore(&info->slock, flags); - return 0; -} - -static void mxser_receive_chars(struct tty_struct *tty, - struct mxser_port *port, int *status) -{ - unsigned char ch, gdl; - int ignored = 0; - int cnt = 0; - int recv_room; - int max = 256; - - recv_room = tty->receive_room; - if (recv_room == 0 && !port->ldisc_stop_rx) - mxser_stoprx(tty); - if (port->board->chip_flag != MOXA_OTHER_UART) { - - if (*status & UART_LSR_SPECIAL) - goto intr_old; - if (port->board->chip_flag == MOXA_MUST_MU860_HWID && - (*status & MOXA_MUST_LSR_RERR)) - goto intr_old; - if (*status & MOXA_MUST_LSR_RERR) - goto intr_old; - - gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER); - - if (port->board->chip_flag == MOXA_MUST_MU150_HWID) - gdl &= MOXA_MUST_GDL_MASK; - if (gdl >= recv_room) { - if (!port->ldisc_stop_rx) - mxser_stoprx(tty); - } - while (gdl--) { - ch = inb(port->ioaddr + UART_RX); - tty_insert_flip_char(tty, ch, 0); - cnt++; - } - goto end_intr; - } -intr_old: - - do { - if (max-- < 0) - break; - - ch = inb(port->ioaddr + UART_RX); - if (port->board->chip_flag && (*status & UART_LSR_OE)) - outb(0x23, port->ioaddr + UART_FCR); - *status &= port->read_status_mask; - if (*status & port->ignore_status_mask) { - if (++ignored > 100) - break; - } else { - char flag = 0; - if (*status & UART_LSR_SPECIAL) { - if (*status & UART_LSR_BI) { - flag = TTY_BREAK; - port->icount.brk++; - - if (port->port.flags & ASYNC_SAK) - do_SAK(tty); - } else if (*status & UART_LSR_PE) { - flag = TTY_PARITY; - port->icount.parity++; - } else if (*status & UART_LSR_FE) { - flag = TTY_FRAME; - port->icount.frame++; - } else if (*status & UART_LSR_OE) { - flag = TTY_OVERRUN; - port->icount.overrun++; - } else - flag = TTY_BREAK; - } - tty_insert_flip_char(tty, ch, flag); - cnt++; - if (cnt >= recv_room) { - if (!port->ldisc_stop_rx) - mxser_stoprx(tty); - break; - } - - } - - if (port->board->chip_flag) - break; - - *status = inb(port->ioaddr + UART_LSR); - } while (*status & UART_LSR_DR); - -end_intr: - mxvar_log.rxcnt[tty->index] += cnt; - port->mon_data.rxcnt += cnt; - port->mon_data.up_rxcnt += cnt; - - /* - * We are called from an interrupt context with &port->slock - * being held. Drop it temporarily in order to prevent - * recursive locking. - */ - spin_unlock(&port->slock); - tty_flip_buffer_push(tty); - spin_lock(&port->slock); -} - -static void mxser_transmit_chars(struct tty_struct *tty, struct mxser_port *port) -{ - int count, cnt; - - if (port->x_char) { - outb(port->x_char, port->ioaddr + UART_TX); - port->x_char = 0; - mxvar_log.txcnt[tty->index]++; - port->mon_data.txcnt++; - port->mon_data.up_txcnt++; - port->icount.tx++; - return; - } - - if (port->port.xmit_buf == NULL) - return; - - if (port->xmit_cnt <= 0 || tty->stopped || - (tty->hw_stopped && - (port->type != PORT_16550A) && - (!port->board->chip_flag))) { - port->IER &= ~UART_IER_THRI; - outb(port->IER, port->ioaddr + UART_IER); - return; - } - - cnt = port->xmit_cnt; - count = port->xmit_fifo_size; - do { - outb(port->port.xmit_buf[port->xmit_tail++], - port->ioaddr + UART_TX); - port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1); - if (--port->xmit_cnt <= 0) - break; - } while (--count > 0); - mxvar_log.txcnt[tty->index] += (cnt - port->xmit_cnt); - - port->mon_data.txcnt += (cnt - port->xmit_cnt); - port->mon_data.up_txcnt += (cnt - port->xmit_cnt); - port->icount.tx += (cnt - port->xmit_cnt); - - if (port->xmit_cnt < WAKEUP_CHARS) - tty_wakeup(tty); - - if (port->xmit_cnt <= 0) { - port->IER &= ~UART_IER_THRI; - outb(port->IER, port->ioaddr + UART_IER); - } -} - -/* - * This is the serial driver's generic interrupt routine - */ -static irqreturn_t mxser_interrupt(int irq, void *dev_id) -{ - int status, iir, i; - struct mxser_board *brd = NULL; - struct mxser_port *port; - int max, irqbits, bits, msr; - unsigned int int_cnt, pass_counter = 0; - int handled = IRQ_NONE; - struct tty_struct *tty; - - for (i = 0; i < MXSER_BOARDS; i++) - if (dev_id == &mxser_boards[i]) { - brd = dev_id; - break; - } - - if (i == MXSER_BOARDS) - goto irq_stop; - if (brd == NULL) - goto irq_stop; - max = brd->info->nports; - while (pass_counter++ < MXSER_ISR_PASS_LIMIT) { - irqbits = inb(brd->vector) & brd->vector_mask; - if (irqbits == brd->vector_mask) - break; - - handled = IRQ_HANDLED; - for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { - if (irqbits == brd->vector_mask) - break; - if (bits & irqbits) - continue; - port = &brd->ports[i]; - - int_cnt = 0; - spin_lock(&port->slock); - do { - iir = inb(port->ioaddr + UART_IIR); - if (iir & UART_IIR_NO_INT) - break; - iir &= MOXA_MUST_IIR_MASK; - tty = tty_port_tty_get(&port->port); - if (!tty || - (port->port.flags & ASYNC_CLOSING) || - !(port->port.flags & - ASYNC_INITIALIZED)) { - status = inb(port->ioaddr + UART_LSR); - outb(0x27, port->ioaddr + UART_FCR); - inb(port->ioaddr + UART_MSR); - tty_kref_put(tty); - break; - } - - status = inb(port->ioaddr + UART_LSR); - - if (status & UART_LSR_PE) - port->err_shadow |= NPPI_NOTIFY_PARITY; - if (status & UART_LSR_FE) - port->err_shadow |= NPPI_NOTIFY_FRAMING; - if (status & UART_LSR_OE) - port->err_shadow |= - NPPI_NOTIFY_HW_OVERRUN; - if (status & UART_LSR_BI) - port->err_shadow |= NPPI_NOTIFY_BREAK; - - if (port->board->chip_flag) { - if (iir == MOXA_MUST_IIR_GDA || - iir == MOXA_MUST_IIR_RDA || - iir == MOXA_MUST_IIR_RTO || - iir == MOXA_MUST_IIR_LSR) - mxser_receive_chars(tty, port, - &status); - - } else { - status &= port->read_status_mask; - if (status & UART_LSR_DR) - mxser_receive_chars(tty, port, - &status); - } - msr = inb(port->ioaddr + UART_MSR); - if (msr & UART_MSR_ANY_DELTA) - mxser_check_modem_status(tty, port, msr); - - if (port->board->chip_flag) { - if (iir == 0x02 && (status & - UART_LSR_THRE)) - mxser_transmit_chars(tty, port); - } else { - if (status & UART_LSR_THRE) - mxser_transmit_chars(tty, port); - } - tty_kref_put(tty); - } while (int_cnt++ < MXSER_ISR_PASS_LIMIT); - spin_unlock(&port->slock); - } - } - -irq_stop: - return handled; -} - -static const struct tty_operations mxser_ops = { - .open = mxser_open, - .close = mxser_close, - .write = mxser_write, - .put_char = mxser_put_char, - .flush_chars = mxser_flush_chars, - .write_room = mxser_write_room, - .chars_in_buffer = mxser_chars_in_buffer, - .flush_buffer = mxser_flush_buffer, - .ioctl = mxser_ioctl, - .throttle = mxser_throttle, - .unthrottle = mxser_unthrottle, - .set_termios = mxser_set_termios, - .stop = mxser_stop, - .start = mxser_start, - .hangup = mxser_hangup, - .break_ctl = mxser_rs_break, - .wait_until_sent = mxser_wait_until_sent, - .tiocmget = mxser_tiocmget, - .tiocmset = mxser_tiocmset, - .get_icount = mxser_get_icount, -}; - -struct tty_port_operations mxser_port_ops = { - .carrier_raised = mxser_carrier_raised, - .dtr_rts = mxser_dtr_rts, - .activate = mxser_activate, - .shutdown = mxser_shutdown_port, -}; - -/* - * The MOXA Smartio/Industio serial driver boot-time initialization code! - */ - -static void mxser_release_ISA_res(struct mxser_board *brd) -{ - free_irq(brd->irq, brd); - release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); - release_region(brd->vector, 1); -} - -static int __devinit mxser_initbrd(struct mxser_board *brd, - struct pci_dev *pdev) -{ - struct mxser_port *info; - unsigned int i; - int retval; - - printk(KERN_INFO "mxser: max. baud rate = %d bps\n", - brd->ports[0].max_baud); - - for (i = 0; i < brd->info->nports; i++) { - info = &brd->ports[i]; - tty_port_init(&info->port); - info->port.ops = &mxser_port_ops; - info->board = brd; - info->stop_rx = 0; - info->ldisc_stop_rx = 0; - - /* Enhance mode enabled here */ - if (brd->chip_flag != MOXA_OTHER_UART) - mxser_enable_must_enchance_mode(info->ioaddr); - - info->port.flags = ASYNC_SHARE_IRQ; - info->type = brd->uart_type; - - process_txrx_fifo(info); - - info->custom_divisor = info->baud_base * 16; - info->port.close_delay = 5 * HZ / 10; - info->port.closing_wait = 30 * HZ; - info->normal_termios = mxvar_sdriver->init_termios; - memset(&info->mon_data, 0, sizeof(struct mxser_mon)); - info->err_shadow = 0; - spin_lock_init(&info->slock); - - /* before set INT ISR, disable all int */ - outb(inb(info->ioaddr + UART_IER) & 0xf0, - info->ioaddr + UART_IER); - } - - retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser", - brd); - if (retval) - printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " - "conflict with another device.\n", - brd->info->name, brd->irq); - - return retval; -} - -static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) -{ - int id, i, bits; - unsigned short regs[16], irq; - unsigned char scratch, scratch2; - - brd->chip_flag = MOXA_OTHER_UART; - - id = mxser_read_register(cap, regs); - switch (id) { - case C168_ASIC_ID: - brd->info = &mxser_cards[0]; - break; - case C104_ASIC_ID: - brd->info = &mxser_cards[1]; - break; - case CI104J_ASIC_ID: - brd->info = &mxser_cards[2]; - break; - case C102_ASIC_ID: - brd->info = &mxser_cards[5]; - break; - case CI132_ASIC_ID: - brd->info = &mxser_cards[6]; - break; - case CI134_ASIC_ID: - brd->info = &mxser_cards[7]; - break; - default: - return 0; - } - - irq = 0; - /* some ISA cards have 2 ports, but we want to see them as 4-port (why?) - Flag-hack checks if configuration should be read as 2-port here. */ - if (brd->info->nports == 2 || (brd->info->flags & MXSER_HAS2)) { - irq = regs[9] & 0xF000; - irq = irq | (irq >> 4); - if (irq != (regs[9] & 0xFF00)) - goto err_irqconflict; - } else if (brd->info->nports == 4) { - irq = regs[9] & 0xF000; - irq = irq | (irq >> 4); - irq = irq | (irq >> 8); - if (irq != regs[9]) - goto err_irqconflict; - } else if (brd->info->nports == 8) { - irq = regs[9] & 0xF000; - irq = irq | (irq >> 4); - irq = irq | (irq >> 8); - if ((irq != regs[9]) || (irq != regs[10])) - goto err_irqconflict; - } - - if (!irq) { - printk(KERN_ERR "mxser: interrupt number unset\n"); - return -EIO; - } - brd->irq = ((int)(irq & 0xF000) >> 12); - for (i = 0; i < 8; i++) - brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8; - if ((regs[12] & 0x80) == 0) { - printk(KERN_ERR "mxser: invalid interrupt vector\n"); - return -EIO; - } - brd->vector = (int)regs[11]; /* interrupt vector */ - if (id == 1) - brd->vector_mask = 0x00FF; - else - brd->vector_mask = 0x000F; - for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { - if (regs[12] & bits) { - brd->ports[i].baud_base = 921600; - brd->ports[i].max_baud = 921600; - } else { - brd->ports[i].baud_base = 115200; - brd->ports[i].max_baud = 115200; - } - } - scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); - outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); - outb(0, cap + UART_EFR); /* EFR is the same as FCR */ - outb(scratch2, cap + UART_LCR); - outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); - scratch = inb(cap + UART_IIR); - - if (scratch & 0xC0) - brd->uart_type = PORT_16550A; - else - brd->uart_type = PORT_16450; - if (!request_region(brd->ports[0].ioaddr, 8 * brd->info->nports, - "mxser(IO)")) { - printk(KERN_ERR "mxser: can't request ports I/O region: " - "0x%.8lx-0x%.8lx\n", - brd->ports[0].ioaddr, brd->ports[0].ioaddr + - 8 * brd->info->nports - 1); - return -EIO; - } - if (!request_region(brd->vector, 1, "mxser(vector)")) { - release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); - printk(KERN_ERR "mxser: can't request interrupt vector region: " - "0x%.8lx-0x%.8lx\n", - brd->ports[0].ioaddr, brd->ports[0].ioaddr + - 8 * brd->info->nports - 1); - return -EIO; - } - return brd->info->nports; - -err_irqconflict: - printk(KERN_ERR "mxser: invalid interrupt number\n"); - return -EIO; -} - -static int __devinit mxser_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ -#ifdef CONFIG_PCI - struct mxser_board *brd; - unsigned int i, j; - unsigned long ioaddress; - int retval = -EINVAL; - - for (i = 0; i < MXSER_BOARDS; i++) - if (mxser_boards[i].info == NULL) - break; - - if (i >= MXSER_BOARDS) { - dev_err(&pdev->dev, "too many boards found (maximum %d), board " - "not configured\n", MXSER_BOARDS); - goto err; - } - - brd = &mxser_boards[i]; - brd->idx = i * MXSER_PORTS_PER_BOARD; - dev_info(&pdev->dev, "found MOXA %s board (BusNo=%d, DevNo=%d)\n", - mxser_cards[ent->driver_data].name, - pdev->bus->number, PCI_SLOT(pdev->devfn)); - - retval = pci_enable_device(pdev); - if (retval) { - dev_err(&pdev->dev, "PCI enable failed\n"); - goto err; - } - - /* io address */ - ioaddress = pci_resource_start(pdev, 2); - retval = pci_request_region(pdev, 2, "mxser(IO)"); - if (retval) - goto err_dis; - - brd->info = &mxser_cards[ent->driver_data]; - for (i = 0; i < brd->info->nports; i++) - brd->ports[i].ioaddr = ioaddress + 8 * i; - - /* vector */ - ioaddress = pci_resource_start(pdev, 3); - retval = pci_request_region(pdev, 3, "mxser(vector)"); - if (retval) - goto err_zero; - brd->vector = ioaddress; - - /* irq */ - brd->irq = pdev->irq; - - brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr); - brd->uart_type = PORT_16550A; - brd->vector_mask = 0; - - for (i = 0; i < brd->info->nports; i++) { - for (j = 0; j < UART_INFO_NUM; j++) { - if (Gpci_uart_info[j].type == brd->chip_flag) { - brd->ports[i].max_baud = - Gpci_uart_info[j].max_baud; - - /* exception....CP-102 */ - if (brd->info->flags & MXSER_HIGHBAUD) - brd->ports[i].max_baud = 921600; - break; - } - } - } - - if (brd->chip_flag == MOXA_MUST_MU860_HWID) { - for (i = 0; i < brd->info->nports; i++) { - if (i < 4) - brd->ports[i].opmode_ioaddr = ioaddress + 4; - else - brd->ports[i].opmode_ioaddr = ioaddress + 0x0c; - } - outb(0, ioaddress + 4); /* default set to RS232 mode */ - outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ - } - - for (i = 0; i < brd->info->nports; i++) { - brd->vector_mask |= (1 << i); - brd->ports[i].baud_base = 921600; - } - - /* mxser_initbrd will hook ISR. */ - retval = mxser_initbrd(brd, pdev); - if (retval) - goto err_rel3; - - for (i = 0; i < brd->info->nports; i++) - tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev); - - pci_set_drvdata(pdev, brd); - - return 0; -err_rel3: - pci_release_region(pdev, 3); -err_zero: - brd->info = NULL; - pci_release_region(pdev, 2); -err_dis: - pci_disable_device(pdev); -err: - return retval; -#else - return -ENODEV; -#endif -} - -static void __devexit mxser_remove(struct pci_dev *pdev) -{ -#ifdef CONFIG_PCI - struct mxser_board *brd = pci_get_drvdata(pdev); - unsigned int i; - - for (i = 0; i < brd->info->nports; i++) - tty_unregister_device(mxvar_sdriver, brd->idx + i); - - free_irq(pdev->irq, brd); - pci_release_region(pdev, 2); - pci_release_region(pdev, 3); - pci_disable_device(pdev); - brd->info = NULL; -#endif -} - -static struct pci_driver mxser_driver = { - .name = "mxser", - .id_table = mxser_pcibrds, - .probe = mxser_probe, - .remove = __devexit_p(mxser_remove) -}; - -static int __init mxser_module_init(void) -{ - struct mxser_board *brd; - unsigned int b, i, m; - int retval; - - mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); - if (!mxvar_sdriver) - return -ENOMEM; - - printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", - MXSER_VERSION); - - /* Initialize the tty_driver structure */ - mxvar_sdriver->owner = THIS_MODULE; - mxvar_sdriver->magic = TTY_DRIVER_MAGIC; - mxvar_sdriver->name = "ttyMI"; - mxvar_sdriver->major = ttymajor; - mxvar_sdriver->minor_start = 0; - mxvar_sdriver->num = MXSER_PORTS + 1; - mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; - mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; - mxvar_sdriver->init_termios = tty_std_termios; - mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; - mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(mxvar_sdriver, &mxser_ops); - - retval = tty_register_driver(mxvar_sdriver); - if (retval) { - printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family " - "tty driver !\n"); - goto err_put; - } - - /* Start finding ISA boards here */ - for (m = 0, b = 0; b < MXSER_BOARDS; b++) { - if (!ioaddr[b]) - continue; - - brd = &mxser_boards[m]; - retval = mxser_get_ISA_conf(ioaddr[b], brd); - if (retval <= 0) { - brd->info = NULL; - continue; - } - - printk(KERN_INFO "mxser: found MOXA %s board (CAP=0x%lx)\n", - brd->info->name, ioaddr[b]); - - /* mxser_initbrd will hook ISR. */ - if (mxser_initbrd(brd, NULL) < 0) { - brd->info = NULL; - continue; - } - - brd->idx = m * MXSER_PORTS_PER_BOARD; - for (i = 0; i < brd->info->nports; i++) - tty_register_device(mxvar_sdriver, brd->idx + i, NULL); - - m++; - } - - retval = pci_register_driver(&mxser_driver); - if (retval) { - printk(KERN_ERR "mxser: can't register pci driver\n"); - if (!m) { - retval = -ENODEV; - goto err_unr; - } /* else: we have some ISA cards under control */ - } - - return 0; -err_unr: - tty_unregister_driver(mxvar_sdriver); -err_put: - put_tty_driver(mxvar_sdriver); - return retval; -} - -static void __exit mxser_module_exit(void) -{ - unsigned int i, j; - - pci_unregister_driver(&mxser_driver); - - for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */ - if (mxser_boards[i].info != NULL) - for (j = 0; j < mxser_boards[i].info->nports; j++) - tty_unregister_device(mxvar_sdriver, - mxser_boards[i].idx + j); - tty_unregister_driver(mxvar_sdriver); - put_tty_driver(mxvar_sdriver); - - for (i = 0; i < MXSER_BOARDS; i++) - if (mxser_boards[i].info != NULL) - mxser_release_ISA_res(&mxser_boards[i]); -} - -module_init(mxser_module_init); -module_exit(mxser_module_exit); diff --git a/drivers/char/mxser.h b/drivers/char/mxser.h deleted file mode 100644 index 41878a69203d..000000000000 --- a/drivers/char/mxser.h +++ /dev/null @@ -1,150 +0,0 @@ -#ifndef _MXSER_H -#define _MXSER_H - -/* - * Semi-public control interfaces - */ - -/* - * MOXA ioctls - */ - -#define MOXA 0x400 -#define MOXA_GETDATACOUNT (MOXA + 23) -#define MOXA_DIAGNOSE (MOXA + 50) -#define MOXA_CHKPORTENABLE (MOXA + 60) -#define MOXA_HighSpeedOn (MOXA + 61) -#define MOXA_GET_MAJOR (MOXA + 63) -#define MOXA_GETMSTATUS (MOXA + 65) -#define MOXA_SET_OP_MODE (MOXA + 66) -#define MOXA_GET_OP_MODE (MOXA + 67) - -#define RS232_MODE 0 -#define RS485_2WIRE_MODE 1 -#define RS422_MODE 2 -#define RS485_4WIRE_MODE 3 -#define OP_MODE_MASK 3 - -#define MOXA_SDS_RSTICOUNTER (MOXA + 69) -#define MOXA_ASPP_OQUEUE (MOXA + 70) -#define MOXA_ASPP_MON (MOXA + 73) -#define MOXA_ASPP_LSTATUS (MOXA + 74) -#define MOXA_ASPP_MON_EXT (MOXA + 75) -#define MOXA_SET_BAUD_METHOD (MOXA + 76) - -/* --------------------------------------------------- */ - -#define NPPI_NOTIFY_PARITY 0x01 -#define NPPI_NOTIFY_FRAMING 0x02 -#define NPPI_NOTIFY_HW_OVERRUN 0x04 -#define NPPI_NOTIFY_SW_OVERRUN 0x08 -#define NPPI_NOTIFY_BREAK 0x10 - -#define NPPI_NOTIFY_CTSHOLD 0x01 /* Tx hold by CTS low */ -#define NPPI_NOTIFY_DSRHOLD 0x02 /* Tx hold by DSR low */ -#define NPPI_NOTIFY_XOFFHOLD 0x08 /* Tx hold by Xoff received */ -#define NPPI_NOTIFY_XOFFXENT 0x10 /* Xoff Sent */ - -/* follow just for Moxa Must chip define. */ -/* */ -/* when LCR register (offset 0x03) write following value, */ -/* the Must chip will enter enchance mode. And write value */ -/* on EFR (offset 0x02) bit 6,7 to change bank. */ -#define MOXA_MUST_ENTER_ENCHANCE 0xBF - -/* when enhance mode enable, access on general bank register */ -#define MOXA_MUST_GDL_REGISTER 0x07 -#define MOXA_MUST_GDL_MASK 0x7F -#define MOXA_MUST_GDL_HAS_BAD_DATA 0x80 - -#define MOXA_MUST_LSR_RERR 0x80 /* error in receive FIFO */ -/* enchance register bank select and enchance mode setting register */ -/* when LCR register equal to 0xBF */ -#define MOXA_MUST_EFR_REGISTER 0x02 -/* enchance mode enable */ -#define MOXA_MUST_EFR_EFRB_ENABLE 0x10 -/* enchance reister bank set 0, 1, 2 */ -#define MOXA_MUST_EFR_BANK0 0x00 -#define MOXA_MUST_EFR_BANK1 0x40 -#define MOXA_MUST_EFR_BANK2 0x80 -#define MOXA_MUST_EFR_BANK3 0xC0 -#define MOXA_MUST_EFR_BANK_MASK 0xC0 - -/* set XON1 value register, when LCR=0xBF and change to bank0 */ -#define MOXA_MUST_XON1_REGISTER 0x04 - -/* set XON2 value register, when LCR=0xBF and change to bank0 */ -#define MOXA_MUST_XON2_REGISTER 0x05 - -/* set XOFF1 value register, when LCR=0xBF and change to bank0 */ -#define MOXA_MUST_XOFF1_REGISTER 0x06 - -/* set XOFF2 value register, when LCR=0xBF and change to bank0 */ -#define MOXA_MUST_XOFF2_REGISTER 0x07 - -#define MOXA_MUST_RBRTL_REGISTER 0x04 -#define MOXA_MUST_RBRTH_REGISTER 0x05 -#define MOXA_MUST_RBRTI_REGISTER 0x06 -#define MOXA_MUST_THRTL_REGISTER 0x07 -#define MOXA_MUST_ENUM_REGISTER 0x04 -#define MOXA_MUST_HWID_REGISTER 0x05 -#define MOXA_MUST_ECR_REGISTER 0x06 -#define MOXA_MUST_CSR_REGISTER 0x07 - -/* good data mode enable */ -#define MOXA_MUST_FCR_GDA_MODE_ENABLE 0x20 -/* only good data put into RxFIFO */ -#define MOXA_MUST_FCR_GDA_ONLY_ENABLE 0x10 - -/* enable CTS interrupt */ -#define MOXA_MUST_IER_ECTSI 0x80 -/* enable RTS interrupt */ -#define MOXA_MUST_IER_ERTSI 0x40 -/* enable Xon/Xoff interrupt */ -#define MOXA_MUST_IER_XINT 0x20 -/* enable GDA interrupt */ -#define MOXA_MUST_IER_EGDAI 0x10 - -#define MOXA_MUST_RECV_ISR (UART_IER_RDI | MOXA_MUST_IER_EGDAI) - -/* GDA interrupt pending */ -#define MOXA_MUST_IIR_GDA 0x1C -#define MOXA_MUST_IIR_RDA 0x04 -#define MOXA_MUST_IIR_RTO 0x0C -#define MOXA_MUST_IIR_LSR 0x06 - -/* recieved Xon/Xoff or specical interrupt pending */ -#define MOXA_MUST_IIR_XSC 0x10 - -/* RTS/CTS change state interrupt pending */ -#define MOXA_MUST_IIR_RTSCTS 0x20 -#define MOXA_MUST_IIR_MASK 0x3E - -#define MOXA_MUST_MCR_XON_FLAG 0x40 -#define MOXA_MUST_MCR_XON_ANY 0x80 -#define MOXA_MUST_MCR_TX_XON 0x08 - -/* software flow control on chip mask value */ -#define MOXA_MUST_EFR_SF_MASK 0x0F -/* send Xon1/Xoff1 */ -#define MOXA_MUST_EFR_SF_TX1 0x08 -/* send Xon2/Xoff2 */ -#define MOXA_MUST_EFR_SF_TX2 0x04 -/* send Xon1,Xon2/Xoff1,Xoff2 */ -#define MOXA_MUST_EFR_SF_TX12 0x0C -/* don't send Xon/Xoff */ -#define MOXA_MUST_EFR_SF_TX_NO 0x00 -/* Tx software flow control mask */ -#define MOXA_MUST_EFR_SF_TX_MASK 0x0C -/* don't receive Xon/Xoff */ -#define MOXA_MUST_EFR_SF_RX_NO 0x00 -/* receive Xon1/Xoff1 */ -#define MOXA_MUST_EFR_SF_RX1 0x02 -/* receive Xon2/Xoff2 */ -#define MOXA_MUST_EFR_SF_RX2 0x01 -/* receive Xon1,Xon2/Xoff1,Xoff2 */ -#define MOXA_MUST_EFR_SF_RX12 0x03 -/* Rx software flow control mask */ -#define MOXA_MUST_EFR_SF_RX_MASK 0x03 - -#endif diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c deleted file mode 100644 index 513ba12064ea..000000000000 --- a/drivers/char/nozomi.c +++ /dev/null @@ -1,1993 +0,0 @@ -/* - * nozomi.c -- HSDPA driver Broadband Wireless Data Card - Globe Trotter - * - * Written by: Ulf Jakobsson, - * Jan Åkerfeldt, - * Stefan Thomasson, - * - * Maintained by: Paul Hardwick (p.hardwick@option.com) - * - * Patches: - * Locking code changes for Vodafone by Sphere Systems Ltd, - * Andrew Bird (ajb@spheresystems.co.uk ) - * & Phil Sanderson - * - * Source has been ported from an implementation made by Filip Aben @ Option - * - * -------------------------------------------------------------------------- - * - * Copyright (c) 2005,2006 Option Wireless Sweden AB - * Copyright (c) 2006 Sphere Systems Ltd - * Copyright (c) 2006 Option Wireless n/v - * All rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * -------------------------------------------------------------------------- - */ - -/* Enable this to have a lot of debug printouts */ -#define DEBUG - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - - -#define VERSION_STRING DRIVER_DESC " 2.1d (build date: " \ - __DATE__ " " __TIME__ ")" - -/* Macros definitions */ - -/* Default debug printout level */ -#define NOZOMI_DEBUG_LEVEL 0x00 - -#define P_BUF_SIZE 128 -#define NFO(_err_flag_, args...) \ -do { \ - char tmp[P_BUF_SIZE]; \ - snprintf(tmp, sizeof(tmp), ##args); \ - printk(_err_flag_ "[%d] %s(): %s\n", __LINE__, \ - __func__, tmp); \ -} while (0) - -#define DBG1(args...) D_(0x01, ##args) -#define DBG2(args...) D_(0x02, ##args) -#define DBG3(args...) D_(0x04, ##args) -#define DBG4(args...) D_(0x08, ##args) -#define DBG5(args...) D_(0x10, ##args) -#define DBG6(args...) D_(0x20, ##args) -#define DBG7(args...) D_(0x40, ##args) -#define DBG8(args...) D_(0x80, ##args) - -#ifdef DEBUG -/* Do we need this settable at runtime? */ -static int debug = NOZOMI_DEBUG_LEVEL; - -#define D(lvl, args...) do \ - {if (lvl & debug) NFO(KERN_DEBUG, ##args); } \ - while (0) -#define D_(lvl, args...) D(lvl, ##args) - -/* These printouts are always printed */ - -#else -static int debug; -#define D_(lvl, args...) -#endif - -/* TODO: rewrite to optimize macros... */ - -#define TMP_BUF_MAX 256 - -#define DUMP(buf__,len__) \ - do { \ - char tbuf[TMP_BUF_MAX] = {0};\ - if (len__ > 1) {\ - snprintf(tbuf, len__ > TMP_BUF_MAX ? TMP_BUF_MAX : len__, "%s", buf__);\ - if (tbuf[len__-2] == '\r') {\ - tbuf[len__-2] = 'r';\ - } \ - DBG1("SENDING: '%s' (%d+n)", tbuf, len__);\ - } else {\ - DBG1("SENDING: '%s' (%d)", tbuf, len__);\ - } \ -} while (0) - -/* Defines */ -#define NOZOMI_NAME "nozomi" -#define NOZOMI_NAME_TTY "nozomi_tty" -#define DRIVER_DESC "Nozomi driver" - -#define NTTY_TTY_MAXMINORS 256 -#define NTTY_FIFO_BUFFER_SIZE 8192 - -/* Must be power of 2 */ -#define FIFO_BUFFER_SIZE_UL 8192 - -/* Size of tmp send buffer to card */ -#define SEND_BUF_MAX 1024 -#define RECEIVE_BUF_MAX 4 - - -#define R_IIR 0x0000 /* Interrupt Identity Register */ -#define R_FCR 0x0000 /* Flow Control Register */ -#define R_IER 0x0004 /* Interrupt Enable Register */ - -#define CONFIG_MAGIC 0xEFEFFEFE -#define TOGGLE_VALID 0x0000 - -/* Definition of interrupt tokens */ -#define MDM_DL1 0x0001 -#define MDM_UL1 0x0002 -#define MDM_DL2 0x0004 -#define MDM_UL2 0x0008 -#define DIAG_DL1 0x0010 -#define DIAG_DL2 0x0020 -#define DIAG_UL 0x0040 -#define APP1_DL 0x0080 -#define APP1_UL 0x0100 -#define APP2_DL 0x0200 -#define APP2_UL 0x0400 -#define CTRL_DL 0x0800 -#define CTRL_UL 0x1000 -#define RESET 0x8000 - -#define MDM_DL (MDM_DL1 | MDM_DL2) -#define MDM_UL (MDM_UL1 | MDM_UL2) -#define DIAG_DL (DIAG_DL1 | DIAG_DL2) - -/* modem signal definition */ -#define CTRL_DSR 0x0001 -#define CTRL_DCD 0x0002 -#define CTRL_RI 0x0004 -#define CTRL_CTS 0x0008 - -#define CTRL_DTR 0x0001 -#define CTRL_RTS 0x0002 - -#define MAX_PORT 4 -#define NOZOMI_MAX_PORTS 5 -#define NOZOMI_MAX_CARDS (NTTY_TTY_MAXMINORS / MAX_PORT) - -/* Type definitions */ - -/* - * There are two types of nozomi cards, - * one with 2048 memory and with 8192 memory - */ -enum card_type { - F32_2 = 2048, /* 512 bytes downlink + uplink * 2 -> 2048 */ - F32_8 = 8192, /* 3072 bytes downl. + 1024 bytes uplink * 2 -> 8192 */ -}; - -/* Initialization states a card can be in */ -enum card_state { - NOZOMI_STATE_UKNOWN = 0, - NOZOMI_STATE_ENABLED = 1, /* pci device enabled */ - NOZOMI_STATE_ALLOCATED = 2, /* config setup done */ - NOZOMI_STATE_READY = 3, /* flowcontrols received */ -}; - -/* Two different toggle channels exist */ -enum channel_type { - CH_A = 0, - CH_B = 1, -}; - -/* Port definition for the card regarding flow control */ -enum ctrl_port_type { - CTRL_CMD = 0, - CTRL_MDM = 1, - CTRL_DIAG = 2, - CTRL_APP1 = 3, - CTRL_APP2 = 4, - CTRL_ERROR = -1, -}; - -/* Ports that the nozomi has */ -enum port_type { - PORT_MDM = 0, - PORT_DIAG = 1, - PORT_APP1 = 2, - PORT_APP2 = 3, - PORT_CTRL = 4, - PORT_ERROR = -1, -}; - -#ifdef __BIG_ENDIAN -/* Big endian */ - -struct toggles { - unsigned int enabled:5; /* - * Toggle fields are valid if enabled is 0, - * else A-channels must always be used. - */ - unsigned int diag_dl:1; - unsigned int mdm_dl:1; - unsigned int mdm_ul:1; -} __attribute__ ((packed)); - -/* Configuration table to read at startup of card */ -/* Is for now only needed during initialization phase */ -struct config_table { - u32 signature; - u16 product_information; - u16 version; - u8 pad3[3]; - struct toggles toggle; - u8 pad1[4]; - u16 dl_mdm_len1; /* - * If this is 64, it can hold - * 60 bytes + 4 that is length field - */ - u16 dl_start; - - u16 dl_diag_len1; - u16 dl_mdm_len2; /* - * If this is 64, it can hold - * 60 bytes + 4 that is length field - */ - u16 dl_app1_len; - - u16 dl_diag_len2; - u16 dl_ctrl_len; - u16 dl_app2_len; - u8 pad2[16]; - u16 ul_mdm_len1; - u16 ul_start; - u16 ul_diag_len; - u16 ul_mdm_len2; - u16 ul_app1_len; - u16 ul_app2_len; - u16 ul_ctrl_len; -} __attribute__ ((packed)); - -/* This stores all control downlink flags */ -struct ctrl_dl { - u8 port; - unsigned int reserved:4; - unsigned int CTS:1; - unsigned int RI:1; - unsigned int DCD:1; - unsigned int DSR:1; -} __attribute__ ((packed)); - -/* This stores all control uplink flags */ -struct ctrl_ul { - u8 port; - unsigned int reserved:6; - unsigned int RTS:1; - unsigned int DTR:1; -} __attribute__ ((packed)); - -#else -/* Little endian */ - -/* This represents the toggle information */ -struct toggles { - unsigned int mdm_ul:1; - unsigned int mdm_dl:1; - unsigned int diag_dl:1; - unsigned int enabled:5; /* - * Toggle fields are valid if enabled is 0, - * else A-channels must always be used. - */ -} __attribute__ ((packed)); - -/* Configuration table to read at startup of card */ -struct config_table { - u32 signature; - u16 version; - u16 product_information; - struct toggles toggle; - u8 pad1[7]; - u16 dl_start; - u16 dl_mdm_len1; /* - * If this is 64, it can hold - * 60 bytes + 4 that is length field - */ - u16 dl_mdm_len2; - u16 dl_diag_len1; - u16 dl_diag_len2; - u16 dl_app1_len; - u16 dl_app2_len; - u16 dl_ctrl_len; - u8 pad2[16]; - u16 ul_start; - u16 ul_mdm_len2; - u16 ul_mdm_len1; - u16 ul_diag_len; - u16 ul_app1_len; - u16 ul_app2_len; - u16 ul_ctrl_len; -} __attribute__ ((packed)); - -/* This stores all control downlink flags */ -struct ctrl_dl { - unsigned int DSR:1; - unsigned int DCD:1; - unsigned int RI:1; - unsigned int CTS:1; - unsigned int reserverd:4; - u8 port; -} __attribute__ ((packed)); - -/* This stores all control uplink flags */ -struct ctrl_ul { - unsigned int DTR:1; - unsigned int RTS:1; - unsigned int reserved:6; - u8 port; -} __attribute__ ((packed)); -#endif - -/* This holds all information that is needed regarding a port */ -struct port { - struct tty_port port; - u8 update_flow_control; - struct ctrl_ul ctrl_ul; - struct ctrl_dl ctrl_dl; - struct kfifo fifo_ul; - void __iomem *dl_addr[2]; - u32 dl_size[2]; - u8 toggle_dl; - void __iomem *ul_addr[2]; - u32 ul_size[2]; - u8 toggle_ul; - u16 token_dl; - - /* mutex to ensure one access patch to this port */ - struct mutex tty_sem; - wait_queue_head_t tty_wait; - struct async_icount tty_icount; - - struct nozomi *dc; -}; - -/* Private data one for each card in the system */ -struct nozomi { - void __iomem *base_addr; - unsigned long flip; - - /* Pointers to registers */ - void __iomem *reg_iir; - void __iomem *reg_fcr; - void __iomem *reg_ier; - - u16 last_ier; - enum card_type card_type; - struct config_table config_table; /* Configuration table */ - struct pci_dev *pdev; - struct port port[NOZOMI_MAX_PORTS]; - u8 *send_buf; - - spinlock_t spin_mutex; /* secures access to registers and tty */ - - unsigned int index_start; - enum card_state state; - u32 open_ttys; -}; - -/* This is a data packet that is read or written to/from card */ -struct buffer { - u32 size; /* size is the length of the data buffer */ - u8 *data; -} __attribute__ ((packed)); - -/* Global variables */ -static const struct pci_device_id nozomi_pci_tbl[] __devinitconst = { - {PCI_DEVICE(0x1931, 0x000c)}, /* Nozomi HSDPA */ - {}, -}; - -MODULE_DEVICE_TABLE(pci, nozomi_pci_tbl); - -static struct nozomi *ndevs[NOZOMI_MAX_CARDS]; -static struct tty_driver *ntty_driver; - -static const struct tty_port_operations noz_tty_port_ops; - -/* - * find card by tty_index - */ -static inline struct nozomi *get_dc_by_tty(const struct tty_struct *tty) -{ - return tty ? ndevs[tty->index / MAX_PORT] : NULL; -} - -static inline struct port *get_port_by_tty(const struct tty_struct *tty) -{ - struct nozomi *ndev = get_dc_by_tty(tty); - return ndev ? &ndev->port[tty->index % MAX_PORT] : NULL; -} - -/* - * TODO: - * -Optimize - * -Rewrite cleaner - */ - -static void read_mem32(u32 *buf, const void __iomem *mem_addr_start, - u32 size_bytes) -{ - u32 i = 0; - const u32 __iomem *ptr = mem_addr_start; - u16 *buf16; - - if (unlikely(!ptr || !buf)) - goto out; - - /* shortcut for extremely often used cases */ - switch (size_bytes) { - case 2: /* 2 bytes */ - buf16 = (u16 *) buf; - *buf16 = __le16_to_cpu(readw(ptr)); - goto out; - break; - case 4: /* 4 bytes */ - *(buf) = __le32_to_cpu(readl(ptr)); - goto out; - break; - } - - while (i < size_bytes) { - if (size_bytes - i == 2) { - /* Handle 2 bytes in the end */ - buf16 = (u16 *) buf; - *(buf16) = __le16_to_cpu(readw(ptr)); - i += 2; - } else { - /* Read 4 bytes */ - *(buf) = __le32_to_cpu(readl(ptr)); - i += 4; - } - buf++; - ptr++; - } -out: - return; -} - -/* - * TODO: - * -Optimize - * -Rewrite cleaner - */ -static u32 write_mem32(void __iomem *mem_addr_start, const u32 *buf, - u32 size_bytes) -{ - u32 i = 0; - u32 __iomem *ptr = mem_addr_start; - const u16 *buf16; - - if (unlikely(!ptr || !buf)) - return 0; - - /* shortcut for extremely often used cases */ - switch (size_bytes) { - case 2: /* 2 bytes */ - buf16 = (const u16 *)buf; - writew(__cpu_to_le16(*buf16), ptr); - return 2; - break; - case 1: /* - * also needs to write 4 bytes in this case - * so falling through.. - */ - case 4: /* 4 bytes */ - writel(__cpu_to_le32(*buf), ptr); - return 4; - break; - } - - while (i < size_bytes) { - if (size_bytes - i == 2) { - /* 2 bytes */ - buf16 = (const u16 *)buf; - writew(__cpu_to_le16(*buf16), ptr); - i += 2; - } else { - /* 4 bytes */ - writel(__cpu_to_le32(*buf), ptr); - i += 4; - } - buf++; - ptr++; - } - return i; -} - -/* Setup pointers to different channels and also setup buffer sizes. */ -static void setup_memory(struct nozomi *dc) -{ - void __iomem *offset = dc->base_addr + dc->config_table.dl_start; - /* The length reported is including the length field of 4 bytes, - * hence subtract with 4. - */ - const u16 buff_offset = 4; - - /* Modem port dl configuration */ - dc->port[PORT_MDM].dl_addr[CH_A] = offset; - dc->port[PORT_MDM].dl_addr[CH_B] = - (offset += dc->config_table.dl_mdm_len1); - dc->port[PORT_MDM].dl_size[CH_A] = - dc->config_table.dl_mdm_len1 - buff_offset; - dc->port[PORT_MDM].dl_size[CH_B] = - dc->config_table.dl_mdm_len2 - buff_offset; - - /* Diag port dl configuration */ - dc->port[PORT_DIAG].dl_addr[CH_A] = - (offset += dc->config_table.dl_mdm_len2); - dc->port[PORT_DIAG].dl_size[CH_A] = - dc->config_table.dl_diag_len1 - buff_offset; - dc->port[PORT_DIAG].dl_addr[CH_B] = - (offset += dc->config_table.dl_diag_len1); - dc->port[PORT_DIAG].dl_size[CH_B] = - dc->config_table.dl_diag_len2 - buff_offset; - - /* App1 port dl configuration */ - dc->port[PORT_APP1].dl_addr[CH_A] = - (offset += dc->config_table.dl_diag_len2); - dc->port[PORT_APP1].dl_size[CH_A] = - dc->config_table.dl_app1_len - buff_offset; - - /* App2 port dl configuration */ - dc->port[PORT_APP2].dl_addr[CH_A] = - (offset += dc->config_table.dl_app1_len); - dc->port[PORT_APP2].dl_size[CH_A] = - dc->config_table.dl_app2_len - buff_offset; - - /* Ctrl dl configuration */ - dc->port[PORT_CTRL].dl_addr[CH_A] = - (offset += dc->config_table.dl_app2_len); - dc->port[PORT_CTRL].dl_size[CH_A] = - dc->config_table.dl_ctrl_len - buff_offset; - - offset = dc->base_addr + dc->config_table.ul_start; - - /* Modem Port ul configuration */ - dc->port[PORT_MDM].ul_addr[CH_A] = offset; - dc->port[PORT_MDM].ul_size[CH_A] = - dc->config_table.ul_mdm_len1 - buff_offset; - dc->port[PORT_MDM].ul_addr[CH_B] = - (offset += dc->config_table.ul_mdm_len1); - dc->port[PORT_MDM].ul_size[CH_B] = - dc->config_table.ul_mdm_len2 - buff_offset; - - /* Diag port ul configuration */ - dc->port[PORT_DIAG].ul_addr[CH_A] = - (offset += dc->config_table.ul_mdm_len2); - dc->port[PORT_DIAG].ul_size[CH_A] = - dc->config_table.ul_diag_len - buff_offset; - - /* App1 port ul configuration */ - dc->port[PORT_APP1].ul_addr[CH_A] = - (offset += dc->config_table.ul_diag_len); - dc->port[PORT_APP1].ul_size[CH_A] = - dc->config_table.ul_app1_len - buff_offset; - - /* App2 port ul configuration */ - dc->port[PORT_APP2].ul_addr[CH_A] = - (offset += dc->config_table.ul_app1_len); - dc->port[PORT_APP2].ul_size[CH_A] = - dc->config_table.ul_app2_len - buff_offset; - - /* Ctrl ul configuration */ - dc->port[PORT_CTRL].ul_addr[CH_A] = - (offset += dc->config_table.ul_app2_len); - dc->port[PORT_CTRL].ul_size[CH_A] = - dc->config_table.ul_ctrl_len - buff_offset; -} - -/* Dump config table under initalization phase */ -#ifdef DEBUG -static void dump_table(const struct nozomi *dc) -{ - DBG3("signature: 0x%08X", dc->config_table.signature); - DBG3("version: 0x%04X", dc->config_table.version); - DBG3("product_information: 0x%04X", \ - dc->config_table.product_information); - DBG3("toggle enabled: %d", dc->config_table.toggle.enabled); - DBG3("toggle up_mdm: %d", dc->config_table.toggle.mdm_ul); - DBG3("toggle dl_mdm: %d", dc->config_table.toggle.mdm_dl); - DBG3("toggle dl_dbg: %d", dc->config_table.toggle.diag_dl); - - DBG3("dl_start: 0x%04X", dc->config_table.dl_start); - DBG3("dl_mdm_len0: 0x%04X, %d", dc->config_table.dl_mdm_len1, - dc->config_table.dl_mdm_len1); - DBG3("dl_mdm_len1: 0x%04X, %d", dc->config_table.dl_mdm_len2, - dc->config_table.dl_mdm_len2); - DBG3("dl_diag_len0: 0x%04X, %d", dc->config_table.dl_diag_len1, - dc->config_table.dl_diag_len1); - DBG3("dl_diag_len1: 0x%04X, %d", dc->config_table.dl_diag_len2, - dc->config_table.dl_diag_len2); - DBG3("dl_app1_len: 0x%04X, %d", dc->config_table.dl_app1_len, - dc->config_table.dl_app1_len); - DBG3("dl_app2_len: 0x%04X, %d", dc->config_table.dl_app2_len, - dc->config_table.dl_app2_len); - DBG3("dl_ctrl_len: 0x%04X, %d", dc->config_table.dl_ctrl_len, - dc->config_table.dl_ctrl_len); - DBG3("ul_start: 0x%04X, %d", dc->config_table.ul_start, - dc->config_table.ul_start); - DBG3("ul_mdm_len[0]: 0x%04X, %d", dc->config_table.ul_mdm_len1, - dc->config_table.ul_mdm_len1); - DBG3("ul_mdm_len[1]: 0x%04X, %d", dc->config_table.ul_mdm_len2, - dc->config_table.ul_mdm_len2); - DBG3("ul_diag_len: 0x%04X, %d", dc->config_table.ul_diag_len, - dc->config_table.ul_diag_len); - DBG3("ul_app1_len: 0x%04X, %d", dc->config_table.ul_app1_len, - dc->config_table.ul_app1_len); - DBG3("ul_app2_len: 0x%04X, %d", dc->config_table.ul_app2_len, - dc->config_table.ul_app2_len); - DBG3("ul_ctrl_len: 0x%04X, %d", dc->config_table.ul_ctrl_len, - dc->config_table.ul_ctrl_len); -} -#else -static inline void dump_table(const struct nozomi *dc) { } -#endif - -/* - * Read configuration table from card under intalization phase - * Returns 1 if ok, else 0 - */ -static int nozomi_read_config_table(struct nozomi *dc) -{ - read_mem32((u32 *) &dc->config_table, dc->base_addr + 0, - sizeof(struct config_table)); - - if (dc->config_table.signature != CONFIG_MAGIC) { - dev_err(&dc->pdev->dev, "ConfigTable Bad! 0x%08X != 0x%08X\n", - dc->config_table.signature, CONFIG_MAGIC); - return 0; - } - - if ((dc->config_table.version == 0) - || (dc->config_table.toggle.enabled == TOGGLE_VALID)) { - int i; - DBG1("Second phase, configuring card"); - - setup_memory(dc); - - dc->port[PORT_MDM].toggle_ul = dc->config_table.toggle.mdm_ul; - dc->port[PORT_MDM].toggle_dl = dc->config_table.toggle.mdm_dl; - dc->port[PORT_DIAG].toggle_dl = dc->config_table.toggle.diag_dl; - DBG1("toggle ports: MDM UL:%d MDM DL:%d, DIAG DL:%d", - dc->port[PORT_MDM].toggle_ul, - dc->port[PORT_MDM].toggle_dl, dc->port[PORT_DIAG].toggle_dl); - - dump_table(dc); - - for (i = PORT_MDM; i < MAX_PORT; i++) { - memset(&dc->port[i].ctrl_dl, 0, sizeof(struct ctrl_dl)); - memset(&dc->port[i].ctrl_ul, 0, sizeof(struct ctrl_ul)); - } - - /* Enable control channel */ - dc->last_ier = dc->last_ier | CTRL_DL; - writew(dc->last_ier, dc->reg_ier); - - dc->state = NOZOMI_STATE_ALLOCATED; - dev_info(&dc->pdev->dev, "Initialization OK!\n"); - return 1; - } - - if ((dc->config_table.version > 0) - && (dc->config_table.toggle.enabled != TOGGLE_VALID)) { - u32 offset = 0; - DBG1("First phase: pushing upload buffers, clearing download"); - - dev_info(&dc->pdev->dev, "Version of card: %d\n", - dc->config_table.version); - - /* Here we should disable all I/O over F32. */ - setup_memory(dc); - - /* - * We should send ALL channel pair tokens back along - * with reset token - */ - - /* push upload modem buffers */ - write_mem32(dc->port[PORT_MDM].ul_addr[CH_A], - (u32 *) &offset, 4); - write_mem32(dc->port[PORT_MDM].ul_addr[CH_B], - (u32 *) &offset, 4); - - writew(MDM_UL | DIAG_DL | MDM_DL, dc->reg_fcr); - - DBG1("First phase done"); - } - - return 1; -} - -/* Enable uplink interrupts */ -static void enable_transmit_ul(enum port_type port, struct nozomi *dc) -{ - static const u16 mask[] = {MDM_UL, DIAG_UL, APP1_UL, APP2_UL, CTRL_UL}; - - if (port < NOZOMI_MAX_PORTS) { - dc->last_ier |= mask[port]; - writew(dc->last_ier, dc->reg_ier); - } else { - dev_err(&dc->pdev->dev, "Called with wrong port?\n"); - } -} - -/* Disable uplink interrupts */ -static void disable_transmit_ul(enum port_type port, struct nozomi *dc) -{ - static const u16 mask[] = - {~MDM_UL, ~DIAG_UL, ~APP1_UL, ~APP2_UL, ~CTRL_UL}; - - if (port < NOZOMI_MAX_PORTS) { - dc->last_ier &= mask[port]; - writew(dc->last_ier, dc->reg_ier); - } else { - dev_err(&dc->pdev->dev, "Called with wrong port?\n"); - } -} - -/* Enable downlink interrupts */ -static void enable_transmit_dl(enum port_type port, struct nozomi *dc) -{ - static const u16 mask[] = {MDM_DL, DIAG_DL, APP1_DL, APP2_DL, CTRL_DL}; - - if (port < NOZOMI_MAX_PORTS) { - dc->last_ier |= mask[port]; - writew(dc->last_ier, dc->reg_ier); - } else { - dev_err(&dc->pdev->dev, "Called with wrong port?\n"); - } -} - -/* Disable downlink interrupts */ -static void disable_transmit_dl(enum port_type port, struct nozomi *dc) -{ - static const u16 mask[] = - {~MDM_DL, ~DIAG_DL, ~APP1_DL, ~APP2_DL, ~CTRL_DL}; - - if (port < NOZOMI_MAX_PORTS) { - dc->last_ier &= mask[port]; - writew(dc->last_ier, dc->reg_ier); - } else { - dev_err(&dc->pdev->dev, "Called with wrong port?\n"); - } -} - -/* - * Return 1 - send buffer to card and ack. - * Return 0 - don't ack, don't send buffer to card. - */ -static int send_data(enum port_type index, struct nozomi *dc) -{ - u32 size = 0; - struct port *port = &dc->port[index]; - const u8 toggle = port->toggle_ul; - void __iomem *addr = port->ul_addr[toggle]; - const u32 ul_size = port->ul_size[toggle]; - struct tty_struct *tty = tty_port_tty_get(&port->port); - - /* Get data from tty and place in buf for now */ - size = kfifo_out(&port->fifo_ul, dc->send_buf, - ul_size < SEND_BUF_MAX ? ul_size : SEND_BUF_MAX); - - if (size == 0) { - DBG4("No more data to send, disable link:"); - tty_kref_put(tty); - return 0; - } - - /* DUMP(buf, size); */ - - /* Write length + data */ - write_mem32(addr, (u32 *) &size, 4); - write_mem32(addr + 4, (u32 *) dc->send_buf, size); - - if (tty) - tty_wakeup(tty); - - tty_kref_put(tty); - return 1; -} - -/* If all data has been read, return 1, else 0 */ -static int receive_data(enum port_type index, struct nozomi *dc) -{ - u8 buf[RECEIVE_BUF_MAX] = { 0 }; - int size; - u32 offset = 4; - struct port *port = &dc->port[index]; - void __iomem *addr = port->dl_addr[port->toggle_dl]; - struct tty_struct *tty = tty_port_tty_get(&port->port); - int i, ret; - - if (unlikely(!tty)) { - DBG1("tty not open for port: %d?", index); - return 1; - } - - read_mem32((u32 *) &size, addr, 4); - /* DBG1( "%d bytes port: %d", size, index); */ - - if (test_bit(TTY_THROTTLED, &tty->flags)) { - DBG1("No room in tty, don't read data, don't ack interrupt, " - "disable interrupt"); - - /* disable interrupt in downlink... */ - disable_transmit_dl(index, dc); - ret = 0; - goto put; - } - - if (unlikely(size == 0)) { - dev_err(&dc->pdev->dev, "size == 0?\n"); - ret = 1; - goto put; - } - - while (size > 0) { - read_mem32((u32 *) buf, addr + offset, RECEIVE_BUF_MAX); - - if (size == 1) { - tty_insert_flip_char(tty, buf[0], TTY_NORMAL); - size = 0; - } else if (size < RECEIVE_BUF_MAX) { - size -= tty_insert_flip_string(tty, (char *) buf, size); - } else { - i = tty_insert_flip_string(tty, \ - (char *) buf, RECEIVE_BUF_MAX); - size -= i; - offset += i; - } - } - - set_bit(index, &dc->flip); - ret = 1; -put: - tty_kref_put(tty); - return ret; -} - -/* Debug for interrupts */ -#ifdef DEBUG -static char *interrupt2str(u16 interrupt) -{ - static char buf[TMP_BUF_MAX]; - char *p = buf; - - interrupt & MDM_DL1 ? p += snprintf(p, TMP_BUF_MAX, "MDM_DL1 ") : NULL; - interrupt & MDM_DL2 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "MDM_DL2 ") : NULL; - - interrupt & MDM_UL1 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "MDM_UL1 ") : NULL; - interrupt & MDM_UL2 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "MDM_UL2 ") : NULL; - - interrupt & DIAG_DL1 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "DIAG_DL1 ") : NULL; - interrupt & DIAG_DL2 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "DIAG_DL2 ") : NULL; - - interrupt & DIAG_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "DIAG_UL ") : NULL; - - interrupt & APP1_DL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "APP1_DL ") : NULL; - interrupt & APP2_DL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "APP2_DL ") : NULL; - - interrupt & APP1_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "APP1_UL ") : NULL; - interrupt & APP2_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "APP2_UL ") : NULL; - - interrupt & CTRL_DL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "CTRL_DL ") : NULL; - interrupt & CTRL_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "CTRL_UL ") : NULL; - - interrupt & RESET ? p += snprintf(p, TMP_BUF_MAX - (p - buf), - "RESET ") : NULL; - - return buf; -} -#endif - -/* - * Receive flow control - * Return 1 - If ok, else 0 - */ -static int receive_flow_control(struct nozomi *dc) -{ - enum port_type port = PORT_MDM; - struct ctrl_dl ctrl_dl; - struct ctrl_dl old_ctrl; - u16 enable_ier = 0; - - read_mem32((u32 *) &ctrl_dl, dc->port[PORT_CTRL].dl_addr[CH_A], 2); - - switch (ctrl_dl.port) { - case CTRL_CMD: - DBG1("The Base Band sends this value as a response to a " - "request for IMSI detach sent over the control " - "channel uplink (see section 7.6.1)."); - break; - case CTRL_MDM: - port = PORT_MDM; - enable_ier = MDM_DL; - break; - case CTRL_DIAG: - port = PORT_DIAG; - enable_ier = DIAG_DL; - break; - case CTRL_APP1: - port = PORT_APP1; - enable_ier = APP1_DL; - break; - case CTRL_APP2: - port = PORT_APP2; - enable_ier = APP2_DL; - if (dc->state == NOZOMI_STATE_ALLOCATED) { - /* - * After card initialization the flow control - * received for APP2 is always the last - */ - dc->state = NOZOMI_STATE_READY; - dev_info(&dc->pdev->dev, "Device READY!\n"); - } - break; - default: - dev_err(&dc->pdev->dev, - "ERROR: flow control received for non-existing port\n"); - return 0; - }; - - DBG1("0x%04X->0x%04X", *((u16 *)&dc->port[port].ctrl_dl), - *((u16 *)&ctrl_dl)); - - old_ctrl = dc->port[port].ctrl_dl; - dc->port[port].ctrl_dl = ctrl_dl; - - if (old_ctrl.CTS == 1 && ctrl_dl.CTS == 0) { - DBG1("Disable interrupt (0x%04X) on port: %d", - enable_ier, port); - disable_transmit_ul(port, dc); - - } else if (old_ctrl.CTS == 0 && ctrl_dl.CTS == 1) { - - if (kfifo_len(&dc->port[port].fifo_ul)) { - DBG1("Enable interrupt (0x%04X) on port: %d", - enable_ier, port); - DBG1("Data in buffer [%d], enable transmit! ", - kfifo_len(&dc->port[port].fifo_ul)); - enable_transmit_ul(port, dc); - } else { - DBG1("No data in buffer..."); - } - } - - if (*(u16 *)&old_ctrl == *(u16 *)&ctrl_dl) { - DBG1(" No change in mctrl"); - return 1; - } - /* Update statistics */ - if (old_ctrl.CTS != ctrl_dl.CTS) - dc->port[port].tty_icount.cts++; - if (old_ctrl.DSR != ctrl_dl.DSR) - dc->port[port].tty_icount.dsr++; - if (old_ctrl.RI != ctrl_dl.RI) - dc->port[port].tty_icount.rng++; - if (old_ctrl.DCD != ctrl_dl.DCD) - dc->port[port].tty_icount.dcd++; - - wake_up_interruptible(&dc->port[port].tty_wait); - - DBG1("port: %d DCD(%d), CTS(%d), RI(%d), DSR(%d)", - port, - dc->port[port].tty_icount.dcd, dc->port[port].tty_icount.cts, - dc->port[port].tty_icount.rng, dc->port[port].tty_icount.dsr); - - return 1; -} - -static enum ctrl_port_type port2ctrl(enum port_type port, - const struct nozomi *dc) -{ - switch (port) { - case PORT_MDM: - return CTRL_MDM; - case PORT_DIAG: - return CTRL_DIAG; - case PORT_APP1: - return CTRL_APP1; - case PORT_APP2: - return CTRL_APP2; - default: - dev_err(&dc->pdev->dev, - "ERROR: send flow control " \ - "received for non-existing port\n"); - }; - return CTRL_ERROR; -} - -/* - * Send flow control, can only update one channel at a time - * Return 0 - If we have updated all flow control - * Return 1 - If we need to update more flow control, ack current enable more - */ -static int send_flow_control(struct nozomi *dc) -{ - u32 i, more_flow_control_to_be_updated = 0; - u16 *ctrl; - - for (i = PORT_MDM; i < MAX_PORT; i++) { - if (dc->port[i].update_flow_control) { - if (more_flow_control_to_be_updated) { - /* We have more flow control to be updated */ - return 1; - } - dc->port[i].ctrl_ul.port = port2ctrl(i, dc); - ctrl = (u16 *)&dc->port[i].ctrl_ul; - write_mem32(dc->port[PORT_CTRL].ul_addr[0], \ - (u32 *) ctrl, 2); - dc->port[i].update_flow_control = 0; - more_flow_control_to_be_updated = 1; - } - } - return 0; -} - -/* - * Handle downlink data, ports that are handled are modem and diagnostics - * Return 1 - ok - * Return 0 - toggle fields are out of sync - */ -static int handle_data_dl(struct nozomi *dc, enum port_type port, u8 *toggle, - u16 read_iir, u16 mask1, u16 mask2) -{ - if (*toggle == 0 && read_iir & mask1) { - if (receive_data(port, dc)) { - writew(mask1, dc->reg_fcr); - *toggle = !(*toggle); - } - - if (read_iir & mask2) { - if (receive_data(port, dc)) { - writew(mask2, dc->reg_fcr); - *toggle = !(*toggle); - } - } - } else if (*toggle == 1 && read_iir & mask2) { - if (receive_data(port, dc)) { - writew(mask2, dc->reg_fcr); - *toggle = !(*toggle); - } - - if (read_iir & mask1) { - if (receive_data(port, dc)) { - writew(mask1, dc->reg_fcr); - *toggle = !(*toggle); - } - } - } else { - dev_err(&dc->pdev->dev, "port out of sync!, toggle:%d\n", - *toggle); - return 0; - } - return 1; -} - -/* - * Handle uplink data, this is currently for the modem port - * Return 1 - ok - * Return 0 - toggle field are out of sync - */ -static int handle_data_ul(struct nozomi *dc, enum port_type port, u16 read_iir) -{ - u8 *toggle = &(dc->port[port].toggle_ul); - - if (*toggle == 0 && read_iir & MDM_UL1) { - dc->last_ier &= ~MDM_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_data(port, dc)) { - writew(MDM_UL1, dc->reg_fcr); - dc->last_ier = dc->last_ier | MDM_UL; - writew(dc->last_ier, dc->reg_ier); - *toggle = !*toggle; - } - - if (read_iir & MDM_UL2) { - dc->last_ier &= ~MDM_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_data(port, dc)) { - writew(MDM_UL2, dc->reg_fcr); - dc->last_ier = dc->last_ier | MDM_UL; - writew(dc->last_ier, dc->reg_ier); - *toggle = !*toggle; - } - } - - } else if (*toggle == 1 && read_iir & MDM_UL2) { - dc->last_ier &= ~MDM_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_data(port, dc)) { - writew(MDM_UL2, dc->reg_fcr); - dc->last_ier = dc->last_ier | MDM_UL; - writew(dc->last_ier, dc->reg_ier); - *toggle = !*toggle; - } - - if (read_iir & MDM_UL1) { - dc->last_ier &= ~MDM_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_data(port, dc)) { - writew(MDM_UL1, dc->reg_fcr); - dc->last_ier = dc->last_ier | MDM_UL; - writew(dc->last_ier, dc->reg_ier); - *toggle = !*toggle; - } - } - } else { - writew(read_iir & MDM_UL, dc->reg_fcr); - dev_err(&dc->pdev->dev, "port out of sync!\n"); - return 0; - } - return 1; -} - -static irqreturn_t interrupt_handler(int irq, void *dev_id) -{ - struct nozomi *dc = dev_id; - unsigned int a; - u16 read_iir; - - if (!dc) - return IRQ_NONE; - - spin_lock(&dc->spin_mutex); - read_iir = readw(dc->reg_iir); - - /* Card removed */ - if (read_iir == (u16)-1) - goto none; - /* - * Just handle interrupt enabled in IER - * (by masking with dc->last_ier) - */ - read_iir &= dc->last_ier; - - if (read_iir == 0) - goto none; - - - DBG4("%s irq:0x%04X, prev:0x%04X", interrupt2str(read_iir), read_iir, - dc->last_ier); - - if (read_iir & RESET) { - if (unlikely(!nozomi_read_config_table(dc))) { - dc->last_ier = 0x0; - writew(dc->last_ier, dc->reg_ier); - dev_err(&dc->pdev->dev, "Could not read status from " - "card, we should disable interface\n"); - } else { - writew(RESET, dc->reg_fcr); - } - /* No more useful info if this was the reset interrupt. */ - goto exit_handler; - } - if (read_iir & CTRL_UL) { - DBG1("CTRL_UL"); - dc->last_ier &= ~CTRL_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_flow_control(dc)) { - writew(CTRL_UL, dc->reg_fcr); - dc->last_ier = dc->last_ier | CTRL_UL; - writew(dc->last_ier, dc->reg_ier); - } - } - if (read_iir & CTRL_DL) { - receive_flow_control(dc); - writew(CTRL_DL, dc->reg_fcr); - } - if (read_iir & MDM_DL) { - if (!handle_data_dl(dc, PORT_MDM, - &(dc->port[PORT_MDM].toggle_dl), read_iir, - MDM_DL1, MDM_DL2)) { - dev_err(&dc->pdev->dev, "MDM_DL out of sync!\n"); - goto exit_handler; - } - } - if (read_iir & MDM_UL) { - if (!handle_data_ul(dc, PORT_MDM, read_iir)) { - dev_err(&dc->pdev->dev, "MDM_UL out of sync!\n"); - goto exit_handler; - } - } - if (read_iir & DIAG_DL) { - if (!handle_data_dl(dc, PORT_DIAG, - &(dc->port[PORT_DIAG].toggle_dl), read_iir, - DIAG_DL1, DIAG_DL2)) { - dev_err(&dc->pdev->dev, "DIAG_DL out of sync!\n"); - goto exit_handler; - } - } - if (read_iir & DIAG_UL) { - dc->last_ier &= ~DIAG_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_data(PORT_DIAG, dc)) { - writew(DIAG_UL, dc->reg_fcr); - dc->last_ier = dc->last_ier | DIAG_UL; - writew(dc->last_ier, dc->reg_ier); - } - } - if (read_iir & APP1_DL) { - if (receive_data(PORT_APP1, dc)) - writew(APP1_DL, dc->reg_fcr); - } - if (read_iir & APP1_UL) { - dc->last_ier &= ~APP1_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_data(PORT_APP1, dc)) { - writew(APP1_UL, dc->reg_fcr); - dc->last_ier = dc->last_ier | APP1_UL; - writew(dc->last_ier, dc->reg_ier); - } - } - if (read_iir & APP2_DL) { - if (receive_data(PORT_APP2, dc)) - writew(APP2_DL, dc->reg_fcr); - } - if (read_iir & APP2_UL) { - dc->last_ier &= ~APP2_UL; - writew(dc->last_ier, dc->reg_ier); - if (send_data(PORT_APP2, dc)) { - writew(APP2_UL, dc->reg_fcr); - dc->last_ier = dc->last_ier | APP2_UL; - writew(dc->last_ier, dc->reg_ier); - } - } - -exit_handler: - spin_unlock(&dc->spin_mutex); - for (a = 0; a < NOZOMI_MAX_PORTS; a++) { - struct tty_struct *tty; - if (test_and_clear_bit(a, &dc->flip)) { - tty = tty_port_tty_get(&dc->port[a].port); - if (tty) - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } - } - return IRQ_HANDLED; -none: - spin_unlock(&dc->spin_mutex); - return IRQ_NONE; -} - -static void nozomi_get_card_type(struct nozomi *dc) -{ - int i; - u32 size = 0; - - for (i = 0; i < 6; i++) - size += pci_resource_len(dc->pdev, i); - - /* Assume card type F32_8 if no match */ - dc->card_type = size == 2048 ? F32_2 : F32_8; - - dev_info(&dc->pdev->dev, "Card type is: %d\n", dc->card_type); -} - -static void nozomi_setup_private_data(struct nozomi *dc) -{ - void __iomem *offset = dc->base_addr + dc->card_type / 2; - unsigned int i; - - dc->reg_fcr = (void __iomem *)(offset + R_FCR); - dc->reg_iir = (void __iomem *)(offset + R_IIR); - dc->reg_ier = (void __iomem *)(offset + R_IER); - dc->last_ier = 0; - dc->flip = 0; - - dc->port[PORT_MDM].token_dl = MDM_DL; - dc->port[PORT_DIAG].token_dl = DIAG_DL; - dc->port[PORT_APP1].token_dl = APP1_DL; - dc->port[PORT_APP2].token_dl = APP2_DL; - - for (i = 0; i < MAX_PORT; i++) - init_waitqueue_head(&dc->port[i].tty_wait); -} - -static ssize_t card_type_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - const struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev)); - - return sprintf(buf, "%d\n", dc->card_type); -} -static DEVICE_ATTR(card_type, S_IRUGO, card_type_show, NULL); - -static ssize_t open_ttys_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - const struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev)); - - return sprintf(buf, "%u\n", dc->open_ttys); -} -static DEVICE_ATTR(open_ttys, S_IRUGO, open_ttys_show, NULL); - -static void make_sysfs_files(struct nozomi *dc) -{ - if (device_create_file(&dc->pdev->dev, &dev_attr_card_type)) - dev_err(&dc->pdev->dev, - "Could not create sysfs file for card_type\n"); - if (device_create_file(&dc->pdev->dev, &dev_attr_open_ttys)) - dev_err(&dc->pdev->dev, - "Could not create sysfs file for open_ttys\n"); -} - -static void remove_sysfs_files(struct nozomi *dc) -{ - device_remove_file(&dc->pdev->dev, &dev_attr_card_type); - device_remove_file(&dc->pdev->dev, &dev_attr_open_ttys); -} - -/* Allocate memory for one device */ -static int __devinit nozomi_card_init(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - resource_size_t start; - int ret; - struct nozomi *dc = NULL; - int ndev_idx; - int i; - - dev_dbg(&pdev->dev, "Init, new card found\n"); - - for (ndev_idx = 0; ndev_idx < ARRAY_SIZE(ndevs); ndev_idx++) - if (!ndevs[ndev_idx]) - break; - - if (ndev_idx >= ARRAY_SIZE(ndevs)) { - dev_err(&pdev->dev, "no free tty range for this card left\n"); - ret = -EIO; - goto err; - } - - dc = kzalloc(sizeof(struct nozomi), GFP_KERNEL); - if (unlikely(!dc)) { - dev_err(&pdev->dev, "Could not allocate memory\n"); - ret = -ENOMEM; - goto err_free; - } - - dc->pdev = pdev; - - ret = pci_enable_device(dc->pdev); - if (ret) { - dev_err(&pdev->dev, "Failed to enable PCI Device\n"); - goto err_free; - } - - ret = pci_request_regions(dc->pdev, NOZOMI_NAME); - if (ret) { - dev_err(&pdev->dev, "I/O address 0x%04x already in use\n", - (int) /* nozomi_private.io_addr */ 0); - goto err_disable_device; - } - - start = pci_resource_start(dc->pdev, 0); - if (start == 0) { - dev_err(&pdev->dev, "No I/O address for card detected\n"); - ret = -ENODEV; - goto err_rel_regs; - } - - /* Find out what card type it is */ - nozomi_get_card_type(dc); - - dc->base_addr = ioremap_nocache(start, dc->card_type); - if (!dc->base_addr) { - dev_err(&pdev->dev, "Unable to map card MMIO\n"); - ret = -ENODEV; - goto err_rel_regs; - } - - dc->send_buf = kmalloc(SEND_BUF_MAX, GFP_KERNEL); - if (!dc->send_buf) { - dev_err(&pdev->dev, "Could not allocate send buffer?\n"); - ret = -ENOMEM; - goto err_free_sbuf; - } - - for (i = PORT_MDM; i < MAX_PORT; i++) { - if (kfifo_alloc(&dc->port[i].fifo_ul, - FIFO_BUFFER_SIZE_UL, GFP_ATOMIC)) { - dev_err(&pdev->dev, - "Could not allocate kfifo buffer\n"); - ret = -ENOMEM; - goto err_free_kfifo; - } - } - - spin_lock_init(&dc->spin_mutex); - - nozomi_setup_private_data(dc); - - /* Disable all interrupts */ - dc->last_ier = 0; - writew(dc->last_ier, dc->reg_ier); - - ret = request_irq(pdev->irq, &interrupt_handler, IRQF_SHARED, - NOZOMI_NAME, dc); - if (unlikely(ret)) { - dev_err(&pdev->dev, "can't request irq %d\n", pdev->irq); - goto err_free_kfifo; - } - - DBG1("base_addr: %p", dc->base_addr); - - make_sysfs_files(dc); - - dc->index_start = ndev_idx * MAX_PORT; - ndevs[ndev_idx] = dc; - - pci_set_drvdata(pdev, dc); - - /* Enable RESET interrupt */ - dc->last_ier = RESET; - iowrite16(dc->last_ier, dc->reg_ier); - - dc->state = NOZOMI_STATE_ENABLED; - - for (i = 0; i < MAX_PORT; i++) { - struct device *tty_dev; - struct port *port = &dc->port[i]; - port->dc = dc; - mutex_init(&port->tty_sem); - tty_port_init(&port->port); - port->port.ops = &noz_tty_port_ops; - tty_dev = tty_register_device(ntty_driver, dc->index_start + i, - &pdev->dev); - - if (IS_ERR(tty_dev)) { - ret = PTR_ERR(tty_dev); - dev_err(&pdev->dev, "Could not allocate tty?\n"); - goto err_free_tty; - } - } - - return 0; - -err_free_tty: - for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i) - tty_unregister_device(ntty_driver, i); -err_free_kfifo: - for (i = 0; i < MAX_PORT; i++) - kfifo_free(&dc->port[i].fifo_ul); -err_free_sbuf: - kfree(dc->send_buf); - iounmap(dc->base_addr); -err_rel_regs: - pci_release_regions(pdev); -err_disable_device: - pci_disable_device(pdev); -err_free: - kfree(dc); -err: - return ret; -} - -static void __devexit tty_exit(struct nozomi *dc) -{ - unsigned int i; - - DBG1(" "); - - flush_scheduled_work(); - - for (i = 0; i < MAX_PORT; ++i) { - struct tty_struct *tty = tty_port_tty_get(&dc->port[i].port); - if (tty && list_empty(&tty->hangup_work.entry)) - tty_hangup(tty); - tty_kref_put(tty); - } - /* Racy below - surely should wait for scheduled work to be done or - complete off a hangup method ? */ - while (dc->open_ttys) - msleep(1); - for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i) - tty_unregister_device(ntty_driver, i); -} - -/* Deallocate memory for one device */ -static void __devexit nozomi_card_exit(struct pci_dev *pdev) -{ - int i; - struct ctrl_ul ctrl; - struct nozomi *dc = pci_get_drvdata(pdev); - - /* Disable all interrupts */ - dc->last_ier = 0; - writew(dc->last_ier, dc->reg_ier); - - tty_exit(dc); - - /* Send 0x0001, command card to resend the reset token. */ - /* This is to get the reset when the module is reloaded. */ - ctrl.port = 0x00; - ctrl.reserved = 0; - ctrl.RTS = 0; - ctrl.DTR = 1; - DBG1("sending flow control 0x%04X", *((u16 *)&ctrl)); - - /* Setup dc->reg addresses to we can use defines here */ - write_mem32(dc->port[PORT_CTRL].ul_addr[0], (u32 *)&ctrl, 2); - writew(CTRL_UL, dc->reg_fcr); /* push the token to the card. */ - - remove_sysfs_files(dc); - - free_irq(pdev->irq, dc); - - for (i = 0; i < MAX_PORT; i++) - kfifo_free(&dc->port[i].fifo_ul); - - kfree(dc->send_buf); - - iounmap(dc->base_addr); - - pci_release_regions(pdev); - - pci_disable_device(pdev); - - ndevs[dc->index_start / MAX_PORT] = NULL; - - kfree(dc); -} - -static void set_rts(const struct tty_struct *tty, int rts) -{ - struct port *port = get_port_by_tty(tty); - - port->ctrl_ul.RTS = rts; - port->update_flow_control = 1; - enable_transmit_ul(PORT_CTRL, get_dc_by_tty(tty)); -} - -static void set_dtr(const struct tty_struct *tty, int dtr) -{ - struct port *port = get_port_by_tty(tty); - - DBG1("SETTING DTR index: %d, dtr: %d", tty->index, dtr); - - port->ctrl_ul.DTR = dtr; - port->update_flow_control = 1; - enable_transmit_ul(PORT_CTRL, get_dc_by_tty(tty)); -} - -/* - * ---------------------------------------------------------------------------- - * TTY code - * ---------------------------------------------------------------------------- - */ - -static int ntty_install(struct tty_driver *driver, struct tty_struct *tty) -{ - struct port *port = get_port_by_tty(tty); - struct nozomi *dc = get_dc_by_tty(tty); - int ret; - if (!port || !dc || dc->state != NOZOMI_STATE_READY) - return -ENODEV; - ret = tty_init_termios(tty); - if (ret == 0) { - tty_driver_kref_get(driver); - tty->count++; - tty->driver_data = port; - driver->ttys[tty->index] = tty; - } - return ret; -} - -static void ntty_cleanup(struct tty_struct *tty) -{ - tty->driver_data = NULL; -} - -static int ntty_activate(struct tty_port *tport, struct tty_struct *tty) -{ - struct port *port = container_of(tport, struct port, port); - struct nozomi *dc = port->dc; - unsigned long flags; - - DBG1("open: %d", port->token_dl); - spin_lock_irqsave(&dc->spin_mutex, flags); - dc->last_ier = dc->last_ier | port->token_dl; - writew(dc->last_ier, dc->reg_ier); - dc->open_ttys++; - spin_unlock_irqrestore(&dc->spin_mutex, flags); - printk("noz: activated %d: %p\n", tty->index, tport); - return 0; -} - -static int ntty_open(struct tty_struct *tty, struct file *filp) -{ - struct port *port = tty->driver_data; - return tty_port_open(&port->port, tty, filp); -} - -static void ntty_shutdown(struct tty_port *tport) -{ - struct port *port = container_of(tport, struct port, port); - struct nozomi *dc = port->dc; - unsigned long flags; - - DBG1("close: %d", port->token_dl); - spin_lock_irqsave(&dc->spin_mutex, flags); - dc->last_ier &= ~(port->token_dl); - writew(dc->last_ier, dc->reg_ier); - dc->open_ttys--; - spin_unlock_irqrestore(&dc->spin_mutex, flags); - printk("noz: shutdown %p\n", tport); -} - -static void ntty_close(struct tty_struct *tty, struct file *filp) -{ - struct port *port = tty->driver_data; - if (port) - tty_port_close(&port->port, tty, filp); -} - -static void ntty_hangup(struct tty_struct *tty) -{ - struct port *port = tty->driver_data; - tty_port_hangup(&port->port); -} - -/* - * called when the userspace process writes to the tty (/dev/noz*). - * Data is inserted into a fifo, which is then read and transfered to the modem. - */ -static int ntty_write(struct tty_struct *tty, const unsigned char *buffer, - int count) -{ - int rval = -EINVAL; - struct nozomi *dc = get_dc_by_tty(tty); - struct port *port = tty->driver_data; - unsigned long flags; - - /* DBG1( "WRITEx: %d, index = %d", count, index); */ - - if (!dc || !port) - return -ENODEV; - - mutex_lock(&port->tty_sem); - - if (unlikely(!port->port.count)) { - DBG1(" "); - goto exit; - } - - rval = kfifo_in(&port->fifo_ul, (unsigned char *)buffer, count); - - /* notify card */ - if (unlikely(dc == NULL)) { - DBG1("No device context?"); - goto exit; - } - - spin_lock_irqsave(&dc->spin_mutex, flags); - /* CTS is only valid on the modem channel */ - if (port == &(dc->port[PORT_MDM])) { - if (port->ctrl_dl.CTS) { - DBG4("Enable interrupt"); - enable_transmit_ul(tty->index % MAX_PORT, dc); - } else { - dev_err(&dc->pdev->dev, - "CTS not active on modem port?\n"); - } - } else { - enable_transmit_ul(tty->index % MAX_PORT, dc); - } - spin_unlock_irqrestore(&dc->spin_mutex, flags); - -exit: - mutex_unlock(&port->tty_sem); - return rval; -} - -/* - * Calculate how much is left in device - * This method is called by the upper tty layer. - * #according to sources N_TTY.c it expects a value >= 0 and - * does not check for negative values. - * - * If the port is unplugged report lots of room and let the bits - * dribble away so we don't block anything. - */ -static int ntty_write_room(struct tty_struct *tty) -{ - struct port *port = tty->driver_data; - int room = 4096; - const struct nozomi *dc = get_dc_by_tty(tty); - - if (dc) { - mutex_lock(&port->tty_sem); - if (port->port.count) - room = kfifo_avail(&port->fifo_ul); - mutex_unlock(&port->tty_sem); - } - return room; -} - -/* Gets io control parameters */ -static int ntty_tiocmget(struct tty_struct *tty) -{ - const struct port *port = tty->driver_data; - const struct ctrl_dl *ctrl_dl = &port->ctrl_dl; - const struct ctrl_ul *ctrl_ul = &port->ctrl_ul; - - /* Note: these could change under us but it is not clear this - matters if so */ - return (ctrl_ul->RTS ? TIOCM_RTS : 0) | - (ctrl_ul->DTR ? TIOCM_DTR : 0) | - (ctrl_dl->DCD ? TIOCM_CAR : 0) | - (ctrl_dl->RI ? TIOCM_RNG : 0) | - (ctrl_dl->DSR ? TIOCM_DSR : 0) | - (ctrl_dl->CTS ? TIOCM_CTS : 0); -} - -/* Sets io controls parameters */ -static int ntty_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct nozomi *dc = get_dc_by_tty(tty); - unsigned long flags; - - spin_lock_irqsave(&dc->spin_mutex, flags); - if (set & TIOCM_RTS) - set_rts(tty, 1); - else if (clear & TIOCM_RTS) - set_rts(tty, 0); - - if (set & TIOCM_DTR) - set_dtr(tty, 1); - else if (clear & TIOCM_DTR) - set_dtr(tty, 0); - spin_unlock_irqrestore(&dc->spin_mutex, flags); - - return 0; -} - -static int ntty_cflags_changed(struct port *port, unsigned long flags, - struct async_icount *cprev) -{ - const struct async_icount cnow = port->tty_icount; - int ret; - - ret = ((flags & TIOCM_RNG) && (cnow.rng != cprev->rng)) || - ((flags & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || - ((flags & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || - ((flags & TIOCM_CTS) && (cnow.cts != cprev->cts)); - - *cprev = cnow; - - return ret; -} - -static int ntty_tiocgicount(struct tty_struct *tty, - struct serial_icounter_struct *icount) -{ - struct port *port = tty->driver_data; - const struct async_icount cnow = port->tty_icount; - - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->frame = cnow.frame; - icount->overrun = cnow.overrun; - icount->parity = cnow.parity; - icount->brk = cnow.brk; - icount->buf_overrun = cnow.buf_overrun; - return 0; -} - -static int ntty_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct port *port = tty->driver_data; - int rval = -ENOIOCTLCMD; - - DBG1("******** IOCTL, cmd: %d", cmd); - - switch (cmd) { - case TIOCMIWAIT: { - struct async_icount cprev = port->tty_icount; - - rval = wait_event_interruptible(port->tty_wait, - ntty_cflags_changed(port, arg, &cprev)); - break; - } - default: - DBG1("ERR: 0x%08X, %d", cmd, cmd); - break; - }; - - return rval; -} - -/* - * Called by the upper tty layer when tty buffers are ready - * to receive data again after a call to throttle. - */ -static void ntty_unthrottle(struct tty_struct *tty) -{ - struct nozomi *dc = get_dc_by_tty(tty); - unsigned long flags; - - DBG1("UNTHROTTLE"); - spin_lock_irqsave(&dc->spin_mutex, flags); - enable_transmit_dl(tty->index % MAX_PORT, dc); - set_rts(tty, 1); - - spin_unlock_irqrestore(&dc->spin_mutex, flags); -} - -/* - * Called by the upper tty layer when the tty buffers are almost full. - * The driver should stop send more data. - */ -static void ntty_throttle(struct tty_struct *tty) -{ - struct nozomi *dc = get_dc_by_tty(tty); - unsigned long flags; - - DBG1("THROTTLE"); - spin_lock_irqsave(&dc->spin_mutex, flags); - set_rts(tty, 0); - spin_unlock_irqrestore(&dc->spin_mutex, flags); -} - -/* Returns number of chars in buffer, called by tty layer */ -static s32 ntty_chars_in_buffer(struct tty_struct *tty) -{ - struct port *port = tty->driver_data; - struct nozomi *dc = get_dc_by_tty(tty); - s32 rval = 0; - - if (unlikely(!dc || !port)) { - goto exit_in_buffer; - } - - if (unlikely(!port->port.count)) { - dev_err(&dc->pdev->dev, "No tty open?\n"); - goto exit_in_buffer; - } - - rval = kfifo_len(&port->fifo_ul); - -exit_in_buffer: - return rval; -} - -static const struct tty_port_operations noz_tty_port_ops = { - .activate = ntty_activate, - .shutdown = ntty_shutdown, -}; - -static const struct tty_operations tty_ops = { - .ioctl = ntty_ioctl, - .open = ntty_open, - .close = ntty_close, - .hangup = ntty_hangup, - .write = ntty_write, - .write_room = ntty_write_room, - .unthrottle = ntty_unthrottle, - .throttle = ntty_throttle, - .chars_in_buffer = ntty_chars_in_buffer, - .tiocmget = ntty_tiocmget, - .tiocmset = ntty_tiocmset, - .get_icount = ntty_tiocgicount, - .install = ntty_install, - .cleanup = ntty_cleanup, -}; - -/* Module initialization */ -static struct pci_driver nozomi_driver = { - .name = NOZOMI_NAME, - .id_table = nozomi_pci_tbl, - .probe = nozomi_card_init, - .remove = __devexit_p(nozomi_card_exit), -}; - -static __init int nozomi_init(void) -{ - int ret; - - printk(KERN_INFO "Initializing %s\n", VERSION_STRING); - - ntty_driver = alloc_tty_driver(NTTY_TTY_MAXMINORS); - if (!ntty_driver) - return -ENOMEM; - - ntty_driver->owner = THIS_MODULE; - ntty_driver->driver_name = NOZOMI_NAME_TTY; - ntty_driver->name = "noz"; - ntty_driver->major = 0; - ntty_driver->type = TTY_DRIVER_TYPE_SERIAL; - ntty_driver->subtype = SERIAL_TYPE_NORMAL; - ntty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - ntty_driver->init_termios = tty_std_termios; - ntty_driver->init_termios.c_cflag = B115200 | CS8 | CREAD | \ - HUPCL | CLOCAL; - ntty_driver->init_termios.c_ispeed = 115200; - ntty_driver->init_termios.c_ospeed = 115200; - tty_set_operations(ntty_driver, &tty_ops); - - ret = tty_register_driver(ntty_driver); - if (ret) { - printk(KERN_ERR "Nozomi: failed to register ntty driver\n"); - goto free_tty; - } - - ret = pci_register_driver(&nozomi_driver); - if (ret) { - printk(KERN_ERR "Nozomi: can't register pci driver\n"); - goto unr_tty; - } - - return 0; -unr_tty: - tty_unregister_driver(ntty_driver); -free_tty: - put_tty_driver(ntty_driver); - return ret; -} - -static __exit void nozomi_exit(void) -{ - printk(KERN_INFO "Unloading %s\n", DRIVER_DESC); - pci_unregister_driver(&nozomi_driver); - tty_unregister_driver(ntty_driver); - put_tty_driver(ntty_driver); -} - -module_init(nozomi_init); -module_exit(nozomi_exit); - -module_param(debug, int, S_IRUGO | S_IWUSR); - -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c deleted file mode 100644 index 3780da8ad12d..000000000000 --- a/drivers/char/rocket.c +++ /dev/null @@ -1,3199 +0,0 @@ -/* - * RocketPort device driver for Linux - * - * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000. - * - * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -/* - * Kernel Synchronization: - * - * This driver has 2 kernel control paths - exception handlers (calls into the driver - * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts - * are not used. - * - * Critical data: - * - rp_table[], accessed through passed "info" pointers, is a global (static) array of - * serial port state information and the xmit_buf circular buffer. Protected by - * a per port spinlock. - * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there - * is data to be transmitted. Protected by atomic bit operations. - * - rp_num_ports, int indicating number of open ports, protected by atomic operations. - * - * rp_write() and rp_write_char() functions use a per port semaphore to protect against - * simultaneous access to the same port by more than one process. - */ - -/****** Defines ******/ -#define ROCKET_PARANOIA_CHECK -#define ROCKET_DISABLE_SIMUSAGE - -#undef ROCKET_SOFT_FLOW -#undef ROCKET_DEBUG_OPEN -#undef ROCKET_DEBUG_INTR -#undef ROCKET_DEBUG_WRITE -#undef ROCKET_DEBUG_FLOW -#undef ROCKET_DEBUG_THROTTLE -#undef ROCKET_DEBUG_WAIT_UNTIL_SENT -#undef ROCKET_DEBUG_RECEIVE -#undef ROCKET_DEBUG_HANGUP -#undef REV_PCI_ORDER -#undef ROCKET_DEBUG_IO - -#define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */ - -/****** Kernel includes ******/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/****** RocketPort includes ******/ - -#include "rocket_int.h" -#include "rocket.h" - -#define ROCKET_VERSION "2.09" -#define ROCKET_DATE "12-June-2003" - -/****** RocketPort Local Variables ******/ - -static void rp_do_poll(unsigned long dummy); - -static struct tty_driver *rocket_driver; - -static struct rocket_version driver_version = { - ROCKET_VERSION, ROCKET_DATE -}; - -static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */ -static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */ - /* eg. Bit 0 indicates port 0 has xmit data, ... */ -static atomic_t rp_num_ports_open; /* Number of serial ports open */ -static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0); - -static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */ -static unsigned long board2; -static unsigned long board3; -static unsigned long board4; -static unsigned long controller; -static int support_low_speed; -static unsigned long modem1; -static unsigned long modem2; -static unsigned long modem3; -static unsigned long modem4; -static unsigned long pc104_1[8]; -static unsigned long pc104_2[8]; -static unsigned long pc104_3[8]; -static unsigned long pc104_4[8]; -static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 }; - -static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */ -static unsigned long rcktpt_io_addr[NUM_BOARDS]; -static int rcktpt_type[NUM_BOARDS]; -static int is_PCI[NUM_BOARDS]; -static rocketModel_t rocketModel[NUM_BOARDS]; -static int max_board; -static const struct tty_port_operations rocket_port_ops; - -/* - * The following arrays define the interrupt bits corresponding to each AIOP. - * These bits are different between the ISA and regular PCI boards and the - * Universal PCI boards. - */ - -static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = { - AIOP_INTR_BIT_0, - AIOP_INTR_BIT_1, - AIOP_INTR_BIT_2, - AIOP_INTR_BIT_3 -}; - -static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = { - UPCI_AIOP_INTR_BIT_0, - UPCI_AIOP_INTR_BIT_1, - UPCI_AIOP_INTR_BIT_2, - UPCI_AIOP_INTR_BIT_3 -}; - -static Byte_t RData[RDATASIZE] = { - 0x00, 0x09, 0xf6, 0x82, - 0x02, 0x09, 0x86, 0xfb, - 0x04, 0x09, 0x00, 0x0a, - 0x06, 0x09, 0x01, 0x0a, - 0x08, 0x09, 0x8a, 0x13, - 0x0a, 0x09, 0xc5, 0x11, - 0x0c, 0x09, 0x86, 0x85, - 0x0e, 0x09, 0x20, 0x0a, - 0x10, 0x09, 0x21, 0x0a, - 0x12, 0x09, 0x41, 0xff, - 0x14, 0x09, 0x82, 0x00, - 0x16, 0x09, 0x82, 0x7b, - 0x18, 0x09, 0x8a, 0x7d, - 0x1a, 0x09, 0x88, 0x81, - 0x1c, 0x09, 0x86, 0x7a, - 0x1e, 0x09, 0x84, 0x81, - 0x20, 0x09, 0x82, 0x7c, - 0x22, 0x09, 0x0a, 0x0a -}; - -static Byte_t RRegData[RREGDATASIZE] = { - 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */ - 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */ - 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */ - 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */ - 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */ - 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */ - 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */ - 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */ - 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */ - 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */ - 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */ - 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */ - 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */ -}; - -static CONTROLLER_T sController[CTL_SIZE] = { - {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, - {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, - {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, - {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, - {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, - {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, - {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, - {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}} -}; - -static Byte_t sBitMapClrTbl[8] = { - 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f -}; - -static Byte_t sBitMapSetTbl[8] = { - 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 -}; - -static int sClockPrescale = 0x14; - -/* - * Line number is the ttySIx number (x), the Minor number. We - * assign them sequentially, starting at zero. The following - * array keeps track of the line number assigned to a given board/aiop/channel. - */ -static unsigned char lineNumbers[MAX_RP_PORTS]; -static unsigned long nextLineNumber; - -/***** RocketPort Static Prototypes *********/ -static int __init init_ISA(int i); -static void rp_wait_until_sent(struct tty_struct *tty, int timeout); -static void rp_flush_buffer(struct tty_struct *tty); -static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model); -static unsigned char GetLineNumber(int ctrl, int aiop, int ch); -static unsigned char SetLineNumber(int ctrl, int aiop, int ch); -static void rp_start(struct tty_struct *tty); -static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, - int ChanNum); -static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode); -static void sFlushRxFIFO(CHANNEL_T * ChP); -static void sFlushTxFIFO(CHANNEL_T * ChP); -static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags); -static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags); -static void sModemReset(CONTROLLER_T * CtlP, int chan, int on); -static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on); -static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data); -static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, - ByteIO_t * AiopIOList, int AiopIOListSize, - WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, - int PeriodicOnly, int altChanRingIndicator, - int UPCIRingInd); -static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, - ByteIO_t * AiopIOList, int AiopIOListSize, - int IRQNum, Byte_t Frequency, int PeriodicOnly); -static int sReadAiopID(ByteIO_t io); -static int sReadAiopNumChan(WordIO_t io); - -MODULE_AUTHOR("Theodore Ts'o"); -MODULE_DESCRIPTION("Comtrol RocketPort driver"); -module_param(board1, ulong, 0); -MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1"); -module_param(board2, ulong, 0); -MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2"); -module_param(board3, ulong, 0); -MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3"); -module_param(board4, ulong, 0); -MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4"); -module_param(controller, ulong, 0); -MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller"); -module_param(support_low_speed, bool, 0); -MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud"); -module_param(modem1, ulong, 0); -MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem"); -module_param(modem2, ulong, 0); -MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem"); -module_param(modem3, ulong, 0); -MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem"); -module_param(modem4, ulong, 0); -MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem"); -module_param_array(pc104_1, ulong, NULL, 0); -MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,..."); -module_param_array(pc104_2, ulong, NULL, 0); -MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,..."); -module_param_array(pc104_3, ulong, NULL, 0); -MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,..."); -module_param_array(pc104_4, ulong, NULL, 0); -MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,..."); - -static int rp_init(void); -static void rp_cleanup_module(void); - -module_init(rp_init); -module_exit(rp_cleanup_module); - - -MODULE_LICENSE("Dual BSD/GPL"); - -/*************************************************************************/ -/* Module code starts here */ - -static inline int rocket_paranoia_check(struct r_port *info, - const char *routine) -{ -#ifdef ROCKET_PARANOIA_CHECK - if (!info) - return 1; - if (info->magic != RPORT_MAGIC) { - printk(KERN_WARNING "Warning: bad magic number for rocketport " - "struct in %s\n", routine); - return 1; - } -#endif - return 0; -} - - -/* Serial port receive data function. Called (from timer poll) when an AIOPIC signals - * that receive data is present on a serial port. Pulls data from FIFO, moves it into the - * tty layer. - */ -static void rp_do_receive(struct r_port *info, - struct tty_struct *tty, - CHANNEL_t * cp, unsigned int ChanStatus) -{ - unsigned int CharNStat; - int ToRecv, wRecv, space; - unsigned char *cbuf; - - ToRecv = sGetRxCnt(cp); -#ifdef ROCKET_DEBUG_INTR - printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv); -#endif - if (ToRecv == 0) - return; - - /* - * if status indicates there are errored characters in the - * FIFO, then enter status mode (a word in FIFO holds - * character and status). - */ - if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) { - if (!(ChanStatus & STATMODE)) { -#ifdef ROCKET_DEBUG_RECEIVE - printk(KERN_INFO "Entering STATMODE...\n"); -#endif - ChanStatus |= STATMODE; - sEnRxStatusMode(cp); - } - } - - /* - * if we previously entered status mode, then read down the - * FIFO one word at a time, pulling apart the character and - * the status. Update error counters depending on status - */ - if (ChanStatus & STATMODE) { -#ifdef ROCKET_DEBUG_RECEIVE - printk(KERN_INFO "Ignore %x, read %x...\n", - info->ignore_status_mask, info->read_status_mask); -#endif - while (ToRecv) { - char flag; - - CharNStat = sInW(sGetTxRxDataIO(cp)); -#ifdef ROCKET_DEBUG_RECEIVE - printk(KERN_INFO "%x...\n", CharNStat); -#endif - if (CharNStat & STMBREAKH) - CharNStat &= ~(STMFRAMEH | STMPARITYH); - if (CharNStat & info->ignore_status_mask) { - ToRecv--; - continue; - } - CharNStat &= info->read_status_mask; - if (CharNStat & STMBREAKH) - flag = TTY_BREAK; - else if (CharNStat & STMPARITYH) - flag = TTY_PARITY; - else if (CharNStat & STMFRAMEH) - flag = TTY_FRAME; - else if (CharNStat & STMRCVROVRH) - flag = TTY_OVERRUN; - else - flag = TTY_NORMAL; - tty_insert_flip_char(tty, CharNStat & 0xff, flag); - ToRecv--; - } - - /* - * after we've emptied the FIFO in status mode, turn - * status mode back off - */ - if (sGetRxCnt(cp) == 0) { -#ifdef ROCKET_DEBUG_RECEIVE - printk(KERN_INFO "Status mode off.\n"); -#endif - sDisRxStatusMode(cp); - } - } else { - /* - * we aren't in status mode, so read down the FIFO two - * characters at time by doing repeated word IO - * transfer. - */ - space = tty_prepare_flip_string(tty, &cbuf, ToRecv); - if (space < ToRecv) { -#ifdef ROCKET_DEBUG_RECEIVE - printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space); -#endif - if (space <= 0) - return; - ToRecv = space; - } - wRecv = ToRecv >> 1; - if (wRecv) - sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv); - if (ToRecv & 1) - cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp)); - } - /* Push the data up to the tty layer */ - tty_flip_buffer_push(tty); -} - -/* - * Serial port transmit data function. Called from the timer polling loop as a - * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready - * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is - * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks. - */ -static void rp_do_transmit(struct r_port *info) -{ - int c; - CHANNEL_t *cp = &info->channel; - struct tty_struct *tty; - unsigned long flags; - -#ifdef ROCKET_DEBUG_INTR - printk(KERN_DEBUG "%s\n", __func__); -#endif - if (!info) - return; - tty = tty_port_tty_get(&info->port); - - if (tty == NULL) { - printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__); - clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - return; - } - - spin_lock_irqsave(&info->slock, flags); - info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); - - /* Loop sending data to FIFO until done or FIFO full */ - while (1) { - if (tty->stopped || tty->hw_stopped) - break; - c = min(info->xmit_fifo_room, info->xmit_cnt); - c = min(c, XMIT_BUF_SIZE - info->xmit_tail); - if (c <= 0 || info->xmit_fifo_room <= 0) - break; - sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2); - if (c & 1) - sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]); - info->xmit_tail += c; - info->xmit_tail &= XMIT_BUF_SIZE - 1; - info->xmit_cnt -= c; - info->xmit_fifo_room -= c; -#ifdef ROCKET_DEBUG_INTR - printk(KERN_INFO "tx %d chars...\n", c); -#endif - } - - if (info->xmit_cnt == 0) - clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - - if (info->xmit_cnt < WAKEUP_CHARS) { - tty_wakeup(tty); -#ifdef ROCKETPORT_HAVE_POLL_WAIT - wake_up_interruptible(&tty->poll_wait); -#endif - } - - spin_unlock_irqrestore(&info->slock, flags); - tty_kref_put(tty); - -#ifdef ROCKET_DEBUG_INTR - printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head, - info->xmit_tail, info->xmit_fifo_room); -#endif -} - -/* - * Called when a serial port signals it has read data in it's RX FIFO. - * It checks what interrupts are pending and services them, including - * receiving serial data. - */ -static void rp_handle_port(struct r_port *info) -{ - CHANNEL_t *cp; - struct tty_struct *tty; - unsigned int IntMask, ChanStatus; - - if (!info) - return; - - if ((info->port.flags & ASYNC_INITIALIZED) == 0) { - printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " - "info->flags & NOT_INIT\n"); - return; - } - tty = tty_port_tty_get(&info->port); - if (!tty) { - printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " - "tty==NULL\n"); - return; - } - cp = &info->channel; - - IntMask = sGetChanIntID(cp) & info->intmask; -#ifdef ROCKET_DEBUG_INTR - printk(KERN_INFO "rp_interrupt %02x...\n", IntMask); -#endif - ChanStatus = sGetChanStatus(cp); - if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */ - rp_do_receive(info, tty, cp, ChanStatus); - } - if (IntMask & DELTA_CD) { /* CD change */ -#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP)) - printk(KERN_INFO "ttyR%d CD now %s...\n", info->line, - (ChanStatus & CD_ACT) ? "on" : "off"); -#endif - if (!(ChanStatus & CD_ACT) && info->cd_status) { -#ifdef ROCKET_DEBUG_HANGUP - printk(KERN_INFO "CD drop, calling hangup.\n"); -#endif - tty_hangup(tty); - } - info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; - wake_up_interruptible(&info->port.open_wait); - } -#ifdef ROCKET_DEBUG_INTR - if (IntMask & DELTA_CTS) { /* CTS change */ - printk(KERN_INFO "CTS change...\n"); - } - if (IntMask & DELTA_DSR) { /* DSR change */ - printk(KERN_INFO "DSR change...\n"); - } -#endif - tty_kref_put(tty); -} - -/* - * The top level polling routine. Repeats every 1/100 HZ (10ms). - */ -static void rp_do_poll(unsigned long dummy) -{ - CONTROLLER_t *ctlp; - int ctrl, aiop, ch, line; - unsigned int xmitmask, i; - unsigned int CtlMask; - unsigned char AiopMask; - Word_t bit; - - /* Walk through all the boards (ctrl's) */ - for (ctrl = 0; ctrl < max_board; ctrl++) { - if (rcktpt_io_addr[ctrl] <= 0) - continue; - - /* Get a ptr to the board's control struct */ - ctlp = sCtlNumToCtlPtr(ctrl); - - /* Get the interrupt status from the board */ -#ifdef CONFIG_PCI - if (ctlp->BusType == isPCI) - CtlMask = sPCIGetControllerIntStatus(ctlp); - else -#endif - CtlMask = sGetControllerIntStatus(ctlp); - - /* Check if any AIOP read bits are set */ - for (aiop = 0; CtlMask; aiop++) { - bit = ctlp->AiopIntrBits[aiop]; - if (CtlMask & bit) { - CtlMask &= ~bit; - AiopMask = sGetAiopIntStatus(ctlp, aiop); - - /* Check if any port read bits are set */ - for (ch = 0; AiopMask; AiopMask >>= 1, ch++) { - if (AiopMask & 1) { - - /* Get the line number (/dev/ttyRx number). */ - /* Read the data from the port. */ - line = GetLineNumber(ctrl, aiop, ch); - rp_handle_port(rp_table[line]); - } - } - } - } - - xmitmask = xmit_flags[ctrl]; - - /* - * xmit_flags contains bit-significant flags, indicating there is data - * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port - * 1, ... (32 total possible). The variable i has the aiop and ch - * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc). - */ - if (xmitmask) { - for (i = 0; i < rocketModel[ctrl].numPorts; i++) { - if (xmitmask & (1 << i)) { - aiop = (i & 0x18) >> 3; - ch = i & 0x07; - line = GetLineNumber(ctrl, aiop, ch); - rp_do_transmit(rp_table[line]); - } - } - } - } - - /* - * Reset the timer so we get called at the next clock tick (10ms). - */ - if (atomic_read(&rp_num_ports_open)) - mod_timer(&rocket_timer, jiffies + POLL_PERIOD); -} - -/* - * Initializes the r_port structure for a port, as well as enabling the port on - * the board. - * Inputs: board, aiop, chan numbers - */ -static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev) -{ - unsigned rocketMode; - struct r_port *info; - int line; - CONTROLLER_T *ctlp; - - /* Get the next available line number */ - line = SetLineNumber(board, aiop, chan); - - ctlp = sCtlNumToCtlPtr(board); - - /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */ - info = kzalloc(sizeof (struct r_port), GFP_KERNEL); - if (!info) { - printk(KERN_ERR "Couldn't allocate info struct for line #%d\n", - line); - return; - } - - info->magic = RPORT_MAGIC; - info->line = line; - info->ctlp = ctlp; - info->board = board; - info->aiop = aiop; - info->chan = chan; - tty_port_init(&info->port); - info->port.ops = &rocket_port_ops; - init_completion(&info->close_wait); - info->flags &= ~ROCKET_MODE_MASK; - switch (pc104[board][line]) { - case 422: - info->flags |= ROCKET_MODE_RS422; - break; - case 485: - info->flags |= ROCKET_MODE_RS485; - break; - case 232: - default: - info->flags |= ROCKET_MODE_RS232; - break; - } - - info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR; - if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) { - printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n", - board, aiop, chan); - kfree(info); - return; - } - - rocketMode = info->flags & ROCKET_MODE_MASK; - - if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485)) - sEnRTSToggle(&info->channel); - else - sDisRTSToggle(&info->channel); - - if (ctlp->boardType == ROCKET_TYPE_PC104) { - switch (rocketMode) { - case ROCKET_MODE_RS485: - sSetInterfaceMode(&info->channel, InterfaceModeRS485); - break; - case ROCKET_MODE_RS422: - sSetInterfaceMode(&info->channel, InterfaceModeRS422); - break; - case ROCKET_MODE_RS232: - default: - if (info->flags & ROCKET_RTS_TOGGLE) - sSetInterfaceMode(&info->channel, InterfaceModeRS232T); - else - sSetInterfaceMode(&info->channel, InterfaceModeRS232); - break; - } - } - spin_lock_init(&info->slock); - mutex_init(&info->write_mtx); - rp_table[line] = info; - tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev : - NULL); -} - -/* - * Configures a rocketport port according to its termio settings. Called from - * user mode into the driver (exception handler). *info CD manipulation is spinlock protected. - */ -static void configure_r_port(struct tty_struct *tty, struct r_port *info, - struct ktermios *old_termios) -{ - unsigned cflag; - unsigned long flags; - unsigned rocketMode; - int bits, baud, divisor; - CHANNEL_t *cp; - struct ktermios *t = tty->termios; - - cp = &info->channel; - cflag = t->c_cflag; - - /* Byte size and parity */ - if ((cflag & CSIZE) == CS8) { - sSetData8(cp); - bits = 10; - } else { - sSetData7(cp); - bits = 9; - } - if (cflag & CSTOPB) { - sSetStop2(cp); - bits++; - } else { - sSetStop1(cp); - } - - if (cflag & PARENB) { - sEnParity(cp); - bits++; - if (cflag & PARODD) { - sSetOddParity(cp); - } else { - sSetEvenParity(cp); - } - } else { - sDisParity(cp); - } - - /* baud rate */ - baud = tty_get_baud_rate(tty); - if (!baud) - baud = 9600; - divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1; - if ((divisor >= 8192 || divisor < 0) && old_termios) { - baud = tty_termios_baud_rate(old_termios); - if (!baud) - baud = 9600; - divisor = (rp_baud_base[info->board] / baud) - 1; - } - if (divisor >= 8192 || divisor < 0) { - baud = 9600; - divisor = (rp_baud_base[info->board] / baud) - 1; - } - info->cps = baud / bits; - sSetBaud(cp, divisor); - - /* FIXME: Should really back compute a baud rate from the divisor */ - tty_encode_baud_rate(tty, baud, baud); - - if (cflag & CRTSCTS) { - info->intmask |= DELTA_CTS; - sEnCTSFlowCtl(cp); - } else { - info->intmask &= ~DELTA_CTS; - sDisCTSFlowCtl(cp); - } - if (cflag & CLOCAL) { - info->intmask &= ~DELTA_CD; - } else { - spin_lock_irqsave(&info->slock, flags); - if (sGetChanStatus(cp) & CD_ACT) - info->cd_status = 1; - else - info->cd_status = 0; - info->intmask |= DELTA_CD; - spin_unlock_irqrestore(&info->slock, flags); - } - - /* - * Handle software flow control in the board - */ -#ifdef ROCKET_SOFT_FLOW - if (I_IXON(tty)) { - sEnTxSoftFlowCtl(cp); - if (I_IXANY(tty)) { - sEnIXANY(cp); - } else { - sDisIXANY(cp); - } - sSetTxXONChar(cp, START_CHAR(tty)); - sSetTxXOFFChar(cp, STOP_CHAR(tty)); - } else { - sDisTxSoftFlowCtl(cp); - sDisIXANY(cp); - sClrTxXOFF(cp); - } -#endif - - /* - * Set up ignore/read mask words - */ - info->read_status_mask = STMRCVROVRH | 0xFF; - if (I_INPCK(tty)) - info->read_status_mask |= STMFRAMEH | STMPARITYH; - if (I_BRKINT(tty) || I_PARMRK(tty)) - info->read_status_mask |= STMBREAKH; - - /* - * Characters to ignore - */ - info->ignore_status_mask = 0; - if (I_IGNPAR(tty)) - info->ignore_status_mask |= STMFRAMEH | STMPARITYH; - if (I_IGNBRK(tty)) { - info->ignore_status_mask |= STMBREAKH; - /* - * If we're ignoring parity and break indicators, - * ignore overruns too. (For real raw support). - */ - if (I_IGNPAR(tty)) - info->ignore_status_mask |= STMRCVROVRH; - } - - rocketMode = info->flags & ROCKET_MODE_MASK; - - if ((info->flags & ROCKET_RTS_TOGGLE) - || (rocketMode == ROCKET_MODE_RS485)) - sEnRTSToggle(cp); - else - sDisRTSToggle(cp); - - sSetRTS(&info->channel); - - if (cp->CtlP->boardType == ROCKET_TYPE_PC104) { - switch (rocketMode) { - case ROCKET_MODE_RS485: - sSetInterfaceMode(cp, InterfaceModeRS485); - break; - case ROCKET_MODE_RS422: - sSetInterfaceMode(cp, InterfaceModeRS422); - break; - case ROCKET_MODE_RS232: - default: - if (info->flags & ROCKET_RTS_TOGGLE) - sSetInterfaceMode(cp, InterfaceModeRS232T); - else - sSetInterfaceMode(cp, InterfaceModeRS232); - break; - } - } -} - -static int carrier_raised(struct tty_port *port) -{ - struct r_port *info = container_of(port, struct r_port, port); - return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0; -} - -static void dtr_rts(struct tty_port *port, int on) -{ - struct r_port *info = container_of(port, struct r_port, port); - if (on) { - sSetDTR(&info->channel); - sSetRTS(&info->channel); - } else { - sClrDTR(&info->channel); - sClrRTS(&info->channel); - } -} - -/* - * Exception handler that opens a serial port. Creates xmit_buf storage, fills in - * port's r_port struct. Initializes the port hardware. - */ -static int rp_open(struct tty_struct *tty, struct file *filp) -{ - struct r_port *info; - struct tty_port *port; - int line = 0, retval; - CHANNEL_t *cp; - unsigned long page; - - line = tty->index; - if (line < 0 || line >= MAX_RP_PORTS || ((info = rp_table[line]) == NULL)) - return -ENXIO; - port = &info->port; - - page = __get_free_page(GFP_KERNEL); - if (!page) - return -ENOMEM; - - if (port->flags & ASYNC_CLOSING) { - retval = wait_for_completion_interruptible(&info->close_wait); - free_page(page); - if (retval) - return retval; - return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); - } - - /* - * We must not sleep from here until the port is marked fully in use. - */ - if (info->xmit_buf) - free_page(page); - else - info->xmit_buf = (unsigned char *) page; - - tty->driver_data = info; - tty_port_tty_set(port, tty); - - if (port->count++ == 0) { - atomic_inc(&rp_num_ports_open); - -#ifdef ROCKET_DEBUG_OPEN - printk(KERN_INFO "rocket mod++ = %d...\n", - atomic_read(&rp_num_ports_open)); -#endif - } -#ifdef ROCKET_DEBUG_OPEN - printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count); -#endif - - /* - * Info->count is now 1; so it's safe to sleep now. - */ - if (!test_bit(ASYNCB_INITIALIZED, &port->flags)) { - cp = &info->channel; - sSetRxTrigger(cp, TRIG_1); - if (sGetChanStatus(cp) & CD_ACT) - info->cd_status = 1; - else - info->cd_status = 0; - sDisRxStatusMode(cp); - sFlushRxFIFO(cp); - sFlushTxFIFO(cp); - - sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); - sSetRxTrigger(cp, TRIG_1); - - sGetChanStatus(cp); - sDisRxStatusMode(cp); - sClrTxXOFF(cp); - - sDisCTSFlowCtl(cp); - sDisTxSoftFlowCtl(cp); - - sEnRxFIFO(cp); - sEnTransmit(cp); - - set_bit(ASYNCB_INITIALIZED, &info->port.flags); - - /* - * Set up the tty->alt_speed kludge - */ - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) - tty->alt_speed = 57600; - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) - tty->alt_speed = 115200; - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) - tty->alt_speed = 230400; - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) - tty->alt_speed = 460800; - - configure_r_port(tty, info, NULL); - if (tty->termios->c_cflag & CBAUD) { - sSetDTR(cp); - sSetRTS(cp); - } - } - /* Starts (or resets) the maint polling loop */ - mod_timer(&rocket_timer, jiffies + POLL_PERIOD); - - retval = tty_port_block_til_ready(port, tty, filp); - if (retval) { -#ifdef ROCKET_DEBUG_OPEN - printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval); -#endif - return retval; - } - return 0; -} - -/* - * Exception handler that closes a serial port. info->port.count is considered critical. - */ -static void rp_close(struct tty_struct *tty, struct file *filp) -{ - struct r_port *info = tty->driver_data; - struct tty_port *port = &info->port; - int timeout; - CHANNEL_t *cp; - - if (rocket_paranoia_check(info, "rp_close")) - return; - -#ifdef ROCKET_DEBUG_OPEN - printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count); -#endif - - if (tty_port_close_start(port, tty, filp) == 0) - return; - - mutex_lock(&port->mutex); - cp = &info->channel; - /* - * Before we drop DTR, make sure the UART transmitter - * has completely drained; this is especially - * important if there is a transmit FIFO! - */ - timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps; - if (timeout == 0) - timeout = 1; - rp_wait_until_sent(tty, timeout); - clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - - sDisTransmit(cp); - sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); - sDisCTSFlowCtl(cp); - sDisTxSoftFlowCtl(cp); - sClrTxXOFF(cp); - sFlushRxFIFO(cp); - sFlushTxFIFO(cp); - sClrRTS(cp); - if (C_HUPCL(tty)) - sClrDTR(cp); - - rp_flush_buffer(tty); - - tty_ldisc_flush(tty); - - clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - - /* We can't yet use tty_port_close_end as the buffer handling in this - driver is a bit different to the usual */ - - if (port->blocked_open) { - if (port->close_delay) { - msleep_interruptible(jiffies_to_msecs(port->close_delay)); - } - wake_up_interruptible(&port->open_wait); - } else { - if (info->xmit_buf) { - free_page((unsigned long) info->xmit_buf); - info->xmit_buf = NULL; - } - } - spin_lock_irq(&port->lock); - info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE); - tty->closing = 0; - spin_unlock_irq(&port->lock); - mutex_unlock(&port->mutex); - tty_port_tty_set(port, NULL); - - wake_up_interruptible(&port->close_wait); - complete_all(&info->close_wait); - atomic_dec(&rp_num_ports_open); - -#ifdef ROCKET_DEBUG_OPEN - printk(KERN_INFO "rocket mod-- = %d...\n", - atomic_read(&rp_num_ports_open)); - printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line); -#endif - -} - -static void rp_set_termios(struct tty_struct *tty, - struct ktermios *old_termios) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - unsigned cflag; - - if (rocket_paranoia_check(info, "rp_set_termios")) - return; - - cflag = tty->termios->c_cflag; - - /* - * This driver doesn't support CS5 or CS6 - */ - if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6)) - tty->termios->c_cflag = - ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE)); - /* Or CMSPAR */ - tty->termios->c_cflag &= ~CMSPAR; - - configure_r_port(tty, info, old_termios); - - cp = &info->channel; - - /* Handle transition to B0 status */ - if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) { - sClrDTR(cp); - sClrRTS(cp); - } - - /* Handle transition away from B0 status */ - if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) { - if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS)) - sSetRTS(cp); - sSetDTR(cp); - } - - if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - rp_start(tty); - } -} - -static int rp_break(struct tty_struct *tty, int break_state) -{ - struct r_port *info = tty->driver_data; - unsigned long flags; - - if (rocket_paranoia_check(info, "rp_break")) - return -EINVAL; - - spin_lock_irqsave(&info->slock, flags); - if (break_state == -1) - sSendBreak(&info->channel); - else - sClrBreak(&info->channel); - spin_unlock_irqrestore(&info->slock, flags); - return 0; -} - -/* - * sGetChanRI used to be a macro in rocket_int.h. When the functionality for - * the UPCI boards was added, it was decided to make this a function because - * the macro was getting too complicated. All cases except the first one - * (UPCIRingInd) are taken directly from the original macro. - */ -static int sGetChanRI(CHANNEL_T * ChP) -{ - CONTROLLER_t *CtlP = ChP->CtlP; - int ChanNum = ChP->ChanNum; - int RingInd = 0; - - if (CtlP->UPCIRingInd) - RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]); - else if (CtlP->AltChanRingIndicator) - RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT; - else if (CtlP->boardType == ROCKET_TYPE_PC104) - RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]); - - return RingInd; -} - -/********************************************************************************************/ -/* Here are the routines used by rp_ioctl. These are all called from exception handlers. */ - -/* - * Returns the state of the serial modem control lines. These next 2 functions - * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs. - */ -static int rp_tiocmget(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - unsigned int control, result, ChanStatus; - - ChanStatus = sGetChanStatusLo(&info->channel); - control = info->channel.TxControl[3]; - result = ((control & SET_RTS) ? TIOCM_RTS : 0) | - ((control & SET_DTR) ? TIOCM_DTR : 0) | - ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) | - (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) | - ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) | - ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0); - - return result; -} - -/* - * Sets the modem control lines - */ -static int rp_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct r_port *info = tty->driver_data; - - if (set & TIOCM_RTS) - info->channel.TxControl[3] |= SET_RTS; - if (set & TIOCM_DTR) - info->channel.TxControl[3] |= SET_DTR; - if (clear & TIOCM_RTS) - info->channel.TxControl[3] &= ~SET_RTS; - if (clear & TIOCM_DTR) - info->channel.TxControl[3] &= ~SET_DTR; - - out32(info->channel.IndexAddr, info->channel.TxControl); - return 0; -} - -static int get_config(struct r_port *info, struct rocket_config __user *retinfo) -{ - struct rocket_config tmp; - - if (!retinfo) - return -EFAULT; - memset(&tmp, 0, sizeof (tmp)); - mutex_lock(&info->port.mutex); - tmp.line = info->line; - tmp.flags = info->flags; - tmp.close_delay = info->port.close_delay; - tmp.closing_wait = info->port.closing_wait; - tmp.port = rcktpt_io_addr[(info->line >> 5) & 3]; - mutex_unlock(&info->port.mutex); - - if (copy_to_user(retinfo, &tmp, sizeof (*retinfo))) - return -EFAULT; - return 0; -} - -static int set_config(struct tty_struct *tty, struct r_port *info, - struct rocket_config __user *new_info) -{ - struct rocket_config new_serial; - - if (copy_from_user(&new_serial, new_info, sizeof (new_serial))) - return -EFAULT; - - mutex_lock(&info->port.mutex); - if (!capable(CAP_SYS_ADMIN)) - { - if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) { - mutex_unlock(&info->port.mutex); - return -EPERM; - } - info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK)); - configure_r_port(tty, info, NULL); - mutex_unlock(&info->port.mutex); - return 0; - } - - info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS)); - info->port.close_delay = new_serial.close_delay; - info->port.closing_wait = new_serial.closing_wait; - - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) - tty->alt_speed = 57600; - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) - tty->alt_speed = 115200; - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) - tty->alt_speed = 230400; - if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) - tty->alt_speed = 460800; - mutex_unlock(&info->port.mutex); - - configure_r_port(tty, info, NULL); - return 0; -} - -/* - * This function fills in a rocket_ports struct with information - * about what boards/ports are in the system. This info is passed - * to user space. See setrocket.c where the info is used to create - * the /dev/ttyRx ports. - */ -static int get_ports(struct r_port *info, struct rocket_ports __user *retports) -{ - struct rocket_ports tmp; - int board; - - if (!retports) - return -EFAULT; - memset(&tmp, 0, sizeof (tmp)); - tmp.tty_major = rocket_driver->major; - - for (board = 0; board < 4; board++) { - tmp.rocketModel[board].model = rocketModel[board].model; - strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString); - tmp.rocketModel[board].numPorts = rocketModel[board].numPorts; - tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2; - tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber; - } - if (copy_to_user(retports, &tmp, sizeof (*retports))) - return -EFAULT; - return 0; -} - -static int reset_rm2(struct r_port *info, void __user *arg) -{ - int reset; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (copy_from_user(&reset, arg, sizeof (int))) - return -EFAULT; - if (reset) - reset = 1; - - if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII && - rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII) - return -EINVAL; - - if (info->ctlp->BusType == isISA) - sModemReset(info->ctlp, info->chan, reset); - else - sPCIModemReset(info->ctlp, info->chan, reset); - - return 0; -} - -static int get_version(struct r_port *info, struct rocket_version __user *retvers) -{ - if (copy_to_user(retvers, &driver_version, sizeof (*retvers))) - return -EFAULT; - return 0; -} - -/* IOCTL call handler into the driver */ -static int rp_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct r_port *info = tty->driver_data; - void __user *argp = (void __user *)arg; - int ret = 0; - - if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl")) - return -ENXIO; - - switch (cmd) { - case RCKP_GET_STRUCT: - if (copy_to_user(argp, info, sizeof (struct r_port))) - ret = -EFAULT; - break; - case RCKP_GET_CONFIG: - ret = get_config(info, argp); - break; - case RCKP_SET_CONFIG: - ret = set_config(tty, info, argp); - break; - case RCKP_GET_PORTS: - ret = get_ports(info, argp); - break; - case RCKP_RESET_RM2: - ret = reset_rm2(info, argp); - break; - case RCKP_GET_VERSION: - ret = get_version(info, argp); - break; - default: - ret = -ENOIOCTLCMD; - } - return ret; -} - -static void rp_send_xchar(struct tty_struct *tty, char ch) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - - if (rocket_paranoia_check(info, "rp_send_xchar")) - return; - - cp = &info->channel; - if (sGetTxCnt(cp)) - sWriteTxPrioByte(cp, ch); - else - sWriteTxByte(sGetTxRxDataIO(cp), ch); -} - -static void rp_throttle(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - -#ifdef ROCKET_DEBUG_THROTTLE - printk(KERN_INFO "throttle %s: %d....\n", tty->name, - tty->ldisc.chars_in_buffer(tty)); -#endif - - if (rocket_paranoia_check(info, "rp_throttle")) - return; - - cp = &info->channel; - if (I_IXOFF(tty)) - rp_send_xchar(tty, STOP_CHAR(tty)); - - sClrRTS(&info->channel); -} - -static void rp_unthrottle(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; -#ifdef ROCKET_DEBUG_THROTTLE - printk(KERN_INFO "unthrottle %s: %d....\n", tty->name, - tty->ldisc.chars_in_buffer(tty)); -#endif - - if (rocket_paranoia_check(info, "rp_throttle")) - return; - - cp = &info->channel; - if (I_IXOFF(tty)) - rp_send_xchar(tty, START_CHAR(tty)); - - sSetRTS(&info->channel); -} - -/* - * ------------------------------------------------------------ - * rp_stop() and rp_start() - * - * This routines are called before setting or resetting tty->stopped. - * They enable or disable transmitter interrupts, as necessary. - * ------------------------------------------------------------ - */ -static void rp_stop(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - -#ifdef ROCKET_DEBUG_FLOW - printk(KERN_INFO "stop %s: %d %d....\n", tty->name, - info->xmit_cnt, info->xmit_fifo_room); -#endif - - if (rocket_paranoia_check(info, "rp_stop")) - return; - - if (sGetTxCnt(&info->channel)) - sDisTransmit(&info->channel); -} - -static void rp_start(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - -#ifdef ROCKET_DEBUG_FLOW - printk(KERN_INFO "start %s: %d %d....\n", tty->name, - info->xmit_cnt, info->xmit_fifo_room); -#endif - - if (rocket_paranoia_check(info, "rp_stop")) - return; - - sEnTransmit(&info->channel); - set_bit((info->aiop * 8) + info->chan, - (void *) &xmit_flags[info->board]); -} - -/* - * rp_wait_until_sent() --- wait until the transmitter is empty - */ -static void rp_wait_until_sent(struct tty_struct *tty, int timeout) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - unsigned long orig_jiffies; - int check_time, exit_time; - int txcnt; - - if (rocket_paranoia_check(info, "rp_wait_until_sent")) - return; - - cp = &info->channel; - - orig_jiffies = jiffies; -#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT - printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout, - jiffies); - printk(KERN_INFO "cps=%d...\n", info->cps); -#endif - while (1) { - txcnt = sGetTxCnt(cp); - if (!txcnt) { - if (sGetChanStatusLo(cp) & TXSHRMT) - break; - check_time = (HZ / info->cps) / 5; - } else { - check_time = HZ * txcnt / info->cps; - } - if (timeout) { - exit_time = orig_jiffies + timeout - jiffies; - if (exit_time <= 0) - break; - if (exit_time < check_time) - check_time = exit_time; - } - if (check_time == 0) - check_time = 1; -#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT - printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt, - jiffies, check_time); -#endif - msleep_interruptible(jiffies_to_msecs(check_time)); - if (signal_pending(current)) - break; - } - __set_current_state(TASK_RUNNING); -#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT - printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies); -#endif -} - -/* - * rp_hangup() --- called by tty_hangup() when a hangup is signaled. - */ -static void rp_hangup(struct tty_struct *tty) -{ - CHANNEL_t *cp; - struct r_port *info = tty->driver_data; - unsigned long flags; - - if (rocket_paranoia_check(info, "rp_hangup")) - return; - -#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP)) - printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line); -#endif - rp_flush_buffer(tty); - spin_lock_irqsave(&info->port.lock, flags); - if (info->port.flags & ASYNC_CLOSING) { - spin_unlock_irqrestore(&info->port.lock, flags); - return; - } - if (info->port.count) - atomic_dec(&rp_num_ports_open); - clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - spin_unlock_irqrestore(&info->port.lock, flags); - - tty_port_hangup(&info->port); - - cp = &info->channel; - sDisRxFIFO(cp); - sDisTransmit(cp); - sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); - sDisCTSFlowCtl(cp); - sDisTxSoftFlowCtl(cp); - sClrTxXOFF(cp); - clear_bit(ASYNCB_INITIALIZED, &info->port.flags); - - wake_up_interruptible(&info->port.open_wait); -} - -/* - * Exception handler - write char routine. The RocketPort driver uses a - * double-buffering strategy, with the twist that if the in-memory CPU - * buffer is empty, and there's space in the transmit FIFO, the - * writing routines will write directly to transmit FIFO. - * Write buffer and counters protected by spinlocks - */ -static int rp_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - unsigned long flags; - - if (rocket_paranoia_check(info, "rp_put_char")) - return 0; - - /* - * Grab the port write mutex, locking out other processes that try to - * write to this port - */ - mutex_lock(&info->write_mtx); - -#ifdef ROCKET_DEBUG_WRITE - printk(KERN_INFO "rp_put_char %c...\n", ch); -#endif - - spin_lock_irqsave(&info->slock, flags); - cp = &info->channel; - - if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0) - info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); - - if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) { - info->xmit_buf[info->xmit_head++] = ch; - info->xmit_head &= XMIT_BUF_SIZE - 1; - info->xmit_cnt++; - set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - } else { - sOutB(sGetTxRxDataIO(cp), ch); - info->xmit_fifo_room--; - } - spin_unlock_irqrestore(&info->slock, flags); - mutex_unlock(&info->write_mtx); - return 1; -} - -/* - * Exception handler - write routine, called when user app writes to the device. - * A per port write mutex is used to protect from another process writing to - * this port at the same time. This other process could be running on the other CPU - * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out). - * Spinlocks protect the info xmit members. - */ -static int rp_write(struct tty_struct *tty, - const unsigned char *buf, int count) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - const unsigned char *b; - int c, retval = 0; - unsigned long flags; - - if (count <= 0 || rocket_paranoia_check(info, "rp_write")) - return 0; - - if (mutex_lock_interruptible(&info->write_mtx)) - return -ERESTARTSYS; - -#ifdef ROCKET_DEBUG_WRITE - printk(KERN_INFO "rp_write %d chars...\n", count); -#endif - cp = &info->channel; - - if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count) - info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); - - /* - * If the write queue for the port is empty, and there is FIFO space, stuff bytes - * into FIFO. Use the write queue for temp storage. - */ - if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) { - c = min(count, info->xmit_fifo_room); - b = buf; - - /* Push data into FIFO, 2 bytes at a time */ - sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2); - - /* If there is a byte remaining, write it */ - if (c & 1) - sOutB(sGetTxRxDataIO(cp), b[c - 1]); - - retval += c; - buf += c; - count -= c; - - spin_lock_irqsave(&info->slock, flags); - info->xmit_fifo_room -= c; - spin_unlock_irqrestore(&info->slock, flags); - } - - /* If count is zero, we wrote it all and are done */ - if (!count) - goto end; - - /* Write remaining data into the port's xmit_buf */ - while (1) { - /* Hung up ? */ - if (!test_bit(ASYNCB_NORMAL_ACTIVE, &info->port.flags)) - goto end; - c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1); - c = min(c, XMIT_BUF_SIZE - info->xmit_head); - if (c <= 0) - break; - - b = buf; - memcpy(info->xmit_buf + info->xmit_head, b, c); - - spin_lock_irqsave(&info->slock, flags); - info->xmit_head = - (info->xmit_head + c) & (XMIT_BUF_SIZE - 1); - info->xmit_cnt += c; - spin_unlock_irqrestore(&info->slock, flags); - - buf += c; - count -= c; - retval += c; - } - - if ((retval > 0) && !tty->stopped && !tty->hw_stopped) - set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); - -end: - if (info->xmit_cnt < WAKEUP_CHARS) { - tty_wakeup(tty); -#ifdef ROCKETPORT_HAVE_POLL_WAIT - wake_up_interruptible(&tty->poll_wait); -#endif - } - mutex_unlock(&info->write_mtx); - return retval; -} - -/* - * Return the number of characters that can be sent. We estimate - * only using the in-memory transmit buffer only, and ignore the - * potential space in the transmit FIFO. - */ -static int rp_write_room(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - int ret; - - if (rocket_paranoia_check(info, "rp_write_room")) - return 0; - - ret = XMIT_BUF_SIZE - info->xmit_cnt - 1; - if (ret < 0) - ret = 0; -#ifdef ROCKET_DEBUG_WRITE - printk(KERN_INFO "rp_write_room returns %d...\n", ret); -#endif - return ret; -} - -/* - * Return the number of characters in the buffer. Again, this only - * counts those characters in the in-memory transmit buffer. - */ -static int rp_chars_in_buffer(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - - if (rocket_paranoia_check(info, "rp_chars_in_buffer")) - return 0; - - cp = &info->channel; - -#ifdef ROCKET_DEBUG_WRITE - printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt); -#endif - return info->xmit_cnt; -} - -/* - * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the - * r_port struct for the port. Note that spinlock are used to protect info members, - * do not call this function if the spinlock is already held. - */ -static void rp_flush_buffer(struct tty_struct *tty) -{ - struct r_port *info = tty->driver_data; - CHANNEL_t *cp; - unsigned long flags; - - if (rocket_paranoia_check(info, "rp_flush_buffer")) - return; - - spin_lock_irqsave(&info->slock, flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - spin_unlock_irqrestore(&info->slock, flags); - -#ifdef ROCKETPORT_HAVE_POLL_WAIT - wake_up_interruptible(&tty->poll_wait); -#endif - tty_wakeup(tty); - - cp = &info->channel; - sFlushTxFIFO(cp); -} - -#ifdef CONFIG_PCI - -static struct pci_device_id __devinitdata __used rocket_pci_ids[] = { - { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) }, - { } -}; -MODULE_DEVICE_TABLE(pci, rocket_pci_ids); - -/* - * Called when a PCI card is found. Retrieves and stores model information, - * init's aiopic and serial port hardware. - * Inputs: i is the board number (0-n) - */ -static __init int register_PCI(int i, struct pci_dev *dev) -{ - int num_aiops, aiop, max_num_aiops, num_chan, chan; - unsigned int aiopio[MAX_AIOPS_PER_BOARD]; - char *str, *board_type; - CONTROLLER_t *ctlp; - - int fast_clock = 0; - int altChanRingIndicator = 0; - int ports_per_aiop = 8; - WordIO_t ConfigIO = 0; - ByteIO_t UPCIRingInd = 0; - - if (!dev || pci_enable_device(dev)) - return 0; - - rcktpt_io_addr[i] = pci_resource_start(dev, 0); - - rcktpt_type[i] = ROCKET_TYPE_NORMAL; - rocketModel[i].loadrm2 = 0; - rocketModel[i].startingPortNumber = nextLineNumber; - - /* Depending on the model, set up some config variables */ - switch (dev->device) { - case PCI_DEVICE_ID_RP4QUAD: - str = "Quadcable"; - max_num_aiops = 1; - ports_per_aiop = 4; - rocketModel[i].model = MODEL_RP4QUAD; - strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable"); - rocketModel[i].numPorts = 4; - break; - case PCI_DEVICE_ID_RP8OCTA: - str = "Octacable"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_RP8OCTA; - strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable"); - rocketModel[i].numPorts = 8; - break; - case PCI_DEVICE_ID_URP8OCTA: - str = "Octacable"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_UPCI_RP8OCTA; - strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable"); - rocketModel[i].numPorts = 8; - break; - case PCI_DEVICE_ID_RP8INTF: - str = "8"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_RP8INTF; - strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F"); - rocketModel[i].numPorts = 8; - break; - case PCI_DEVICE_ID_URP8INTF: - str = "8"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_UPCI_RP8INTF; - strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F"); - rocketModel[i].numPorts = 8; - break; - case PCI_DEVICE_ID_RP8J: - str = "8J"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_RP8J; - strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors"); - rocketModel[i].numPorts = 8; - break; - case PCI_DEVICE_ID_RP4J: - str = "4J"; - max_num_aiops = 1; - ports_per_aiop = 4; - rocketModel[i].model = MODEL_RP4J; - strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors"); - rocketModel[i].numPorts = 4; - break; - case PCI_DEVICE_ID_RP8SNI: - str = "8 (DB78 Custom)"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_RP8SNI; - strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78"); - rocketModel[i].numPorts = 8; - break; - case PCI_DEVICE_ID_RP16SNI: - str = "16 (DB78 Custom)"; - max_num_aiops = 2; - rocketModel[i].model = MODEL_RP16SNI; - strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78"); - rocketModel[i].numPorts = 16; - break; - case PCI_DEVICE_ID_RP16INTF: - str = "16"; - max_num_aiops = 2; - rocketModel[i].model = MODEL_RP16INTF; - strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F"); - rocketModel[i].numPorts = 16; - break; - case PCI_DEVICE_ID_URP16INTF: - str = "16"; - max_num_aiops = 2; - rocketModel[i].model = MODEL_UPCI_RP16INTF; - strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F"); - rocketModel[i].numPorts = 16; - break; - case PCI_DEVICE_ID_CRP16INTF: - str = "16"; - max_num_aiops = 2; - rocketModel[i].model = MODEL_CPCI_RP16INTF; - strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F"); - rocketModel[i].numPorts = 16; - break; - case PCI_DEVICE_ID_RP32INTF: - str = "32"; - max_num_aiops = 4; - rocketModel[i].model = MODEL_RP32INTF; - strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F"); - rocketModel[i].numPorts = 32; - break; - case PCI_DEVICE_ID_URP32INTF: - str = "32"; - max_num_aiops = 4; - rocketModel[i].model = MODEL_UPCI_RP32INTF; - strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F"); - rocketModel[i].numPorts = 32; - break; - case PCI_DEVICE_ID_RPP4: - str = "Plus Quadcable"; - max_num_aiops = 1; - ports_per_aiop = 4; - altChanRingIndicator++; - fast_clock++; - rocketModel[i].model = MODEL_RPP4; - strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port"); - rocketModel[i].numPorts = 4; - break; - case PCI_DEVICE_ID_RPP8: - str = "Plus Octacable"; - max_num_aiops = 2; - ports_per_aiop = 4; - altChanRingIndicator++; - fast_clock++; - rocketModel[i].model = MODEL_RPP8; - strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port"); - rocketModel[i].numPorts = 8; - break; - case PCI_DEVICE_ID_RP2_232: - str = "Plus 2 (RS-232)"; - max_num_aiops = 1; - ports_per_aiop = 2; - altChanRingIndicator++; - fast_clock++; - rocketModel[i].model = MODEL_RP2_232; - strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232"); - rocketModel[i].numPorts = 2; - break; - case PCI_DEVICE_ID_RP2_422: - str = "Plus 2 (RS-422)"; - max_num_aiops = 1; - ports_per_aiop = 2; - altChanRingIndicator++; - fast_clock++; - rocketModel[i].model = MODEL_RP2_422; - strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422"); - rocketModel[i].numPorts = 2; - break; - case PCI_DEVICE_ID_RP6M: - - max_num_aiops = 1; - ports_per_aiop = 6; - str = "6-port"; - - /* If revision is 1, the rocketmodem flash must be loaded. - * If it is 2 it is a "socketed" version. */ - if (dev->revision == 1) { - rcktpt_type[i] = ROCKET_TYPE_MODEMII; - rocketModel[i].loadrm2 = 1; - } else { - rcktpt_type[i] = ROCKET_TYPE_MODEM; - } - - rocketModel[i].model = MODEL_RP6M; - strcpy(rocketModel[i].modelString, "RocketModem 6 port"); - rocketModel[i].numPorts = 6; - break; - case PCI_DEVICE_ID_RP4M: - max_num_aiops = 1; - ports_per_aiop = 4; - str = "4-port"; - if (dev->revision == 1) { - rcktpt_type[i] = ROCKET_TYPE_MODEMII; - rocketModel[i].loadrm2 = 1; - } else { - rcktpt_type[i] = ROCKET_TYPE_MODEM; - } - - rocketModel[i].model = MODEL_RP4M; - strcpy(rocketModel[i].modelString, "RocketModem 4 port"); - rocketModel[i].numPorts = 4; - break; - default: - str = "(unknown/unsupported)"; - max_num_aiops = 0; - break; - } - - /* - * Check for UPCI boards. - */ - - switch (dev->device) { - case PCI_DEVICE_ID_URP32INTF: - case PCI_DEVICE_ID_URP8INTF: - case PCI_DEVICE_ID_URP16INTF: - case PCI_DEVICE_ID_CRP16INTF: - case PCI_DEVICE_ID_URP8OCTA: - rcktpt_io_addr[i] = pci_resource_start(dev, 2); - ConfigIO = pci_resource_start(dev, 1); - if (dev->device == PCI_DEVICE_ID_URP8OCTA) { - UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; - - /* - * Check for octa or quad cable. - */ - if (! - (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) & - PCI_GPIO_CTRL_8PORT)) { - str = "Quadcable"; - ports_per_aiop = 4; - rocketModel[i].numPorts = 4; - } - } - break; - case PCI_DEVICE_ID_UPCI_RM3_8PORT: - str = "8 ports"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_UPCI_RM3_8PORT; - strcpy(rocketModel[i].modelString, "RocketModem III 8 port"); - rocketModel[i].numPorts = 8; - rcktpt_io_addr[i] = pci_resource_start(dev, 2); - UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; - ConfigIO = pci_resource_start(dev, 1); - rcktpt_type[i] = ROCKET_TYPE_MODEMIII; - break; - case PCI_DEVICE_ID_UPCI_RM3_4PORT: - str = "4 ports"; - max_num_aiops = 1; - rocketModel[i].model = MODEL_UPCI_RM3_4PORT; - strcpy(rocketModel[i].modelString, "RocketModem III 4 port"); - rocketModel[i].numPorts = 4; - rcktpt_io_addr[i] = pci_resource_start(dev, 2); - UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; - ConfigIO = pci_resource_start(dev, 1); - rcktpt_type[i] = ROCKET_TYPE_MODEMIII; - break; - default: - break; - } - - switch (rcktpt_type[i]) { - case ROCKET_TYPE_MODEM: - board_type = "RocketModem"; - break; - case ROCKET_TYPE_MODEMII: - board_type = "RocketModem II"; - break; - case ROCKET_TYPE_MODEMIII: - board_type = "RocketModem III"; - break; - default: - board_type = "RocketPort"; - break; - } - - if (fast_clock) { - sClockPrescale = 0x12; /* mod 2 (divide by 3) */ - rp_baud_base[i] = 921600; - } else { - /* - * If support_low_speed is set, use the slow clock - * prescale, which supports 50 bps - */ - if (support_low_speed) { - /* mod 9 (divide by 10) prescale */ - sClockPrescale = 0x19; - rp_baud_base[i] = 230400; - } else { - /* mod 4 (devide by 5) prescale */ - sClockPrescale = 0x14; - rp_baud_base[i] = 460800; - } - } - - for (aiop = 0; aiop < max_num_aiops; aiop++) - aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40); - ctlp = sCtlNumToCtlPtr(i); - num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd); - for (aiop = 0; aiop < max_num_aiops; aiop++) - ctlp->AiopNumChan[aiop] = ports_per_aiop; - - dev_info(&dev->dev, "comtrol PCI controller #%d found at " - "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n", - i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString, - rocketModel[i].startingPortNumber, - rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1); - - if (num_aiops <= 0) { - rcktpt_io_addr[i] = 0; - return (0); - } - is_PCI[i] = 1; - - /* Reset the AIOPIC, init the serial ports */ - for (aiop = 0; aiop < num_aiops; aiop++) { - sResetAiopByNum(ctlp, aiop); - num_chan = ports_per_aiop; - for (chan = 0; chan < num_chan; chan++) - init_r_port(i, aiop, chan, dev); - } - - /* Rocket modems must be reset */ - if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || - (rcktpt_type[i] == ROCKET_TYPE_MODEMII) || - (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) { - num_chan = ports_per_aiop; - for (chan = 0; chan < num_chan; chan++) - sPCIModemReset(ctlp, chan, 1); - msleep(500); - for (chan = 0; chan < num_chan; chan++) - sPCIModemReset(ctlp, chan, 0); - msleep(500); - rmSpeakerReset(ctlp, rocketModel[i].model); - } - return (1); -} - -/* - * Probes for PCI cards, inits them if found - * Input: board_found = number of ISA boards already found, or the - * starting board number - * Returns: Number of PCI boards found - */ -static int __init init_PCI(int boards_found) -{ - struct pci_dev *dev = NULL; - int count = 0; - - /* Work through the PCI device list, pulling out ours */ - while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) { - if (register_PCI(count + boards_found, dev)) - count++; - } - return (count); -} - -#endif /* CONFIG_PCI */ - -/* - * Probes for ISA cards - * Input: i = the board number to look for - * Returns: 1 if board found, 0 else - */ -static int __init init_ISA(int i) -{ - int num_aiops, num_chan = 0, total_num_chan = 0; - int aiop, chan; - unsigned int aiopio[MAX_AIOPS_PER_BOARD]; - CONTROLLER_t *ctlp; - char *type_string; - - /* If io_addr is zero, no board configured */ - if (rcktpt_io_addr[i] == 0) - return (0); - - /* Reserve the IO region */ - if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) { - printk(KERN_ERR "Unable to reserve IO region for configured " - "ISA RocketPort at address 0x%lx, board not " - "installed...\n", rcktpt_io_addr[i]); - rcktpt_io_addr[i] = 0; - return (0); - } - - ctlp = sCtlNumToCtlPtr(i); - - ctlp->boardType = rcktpt_type[i]; - - switch (rcktpt_type[i]) { - case ROCKET_TYPE_PC104: - type_string = "(PC104)"; - break; - case ROCKET_TYPE_MODEM: - type_string = "(RocketModem)"; - break; - case ROCKET_TYPE_MODEMII: - type_string = "(RocketModem II)"; - break; - default: - type_string = ""; - break; - } - - /* - * If support_low_speed is set, use the slow clock prescale, - * which supports 50 bps - */ - if (support_low_speed) { - sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */ - rp_baud_base[i] = 230400; - } else { - sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */ - rp_baud_base[i] = 460800; - } - - for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++) - aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400); - - num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0); - - if (ctlp->boardType == ROCKET_TYPE_PC104) { - sEnAiop(ctlp, 2); /* only one AIOPIC, but these */ - sEnAiop(ctlp, 3); /* CSels used for other stuff */ - } - - /* If something went wrong initing the AIOP's release the ISA IO memory */ - if (num_aiops <= 0) { - release_region(rcktpt_io_addr[i], 64); - rcktpt_io_addr[i] = 0; - return (0); - } - - rocketModel[i].startingPortNumber = nextLineNumber; - - for (aiop = 0; aiop < num_aiops; aiop++) { - sResetAiopByNum(ctlp, aiop); - sEnAiop(ctlp, aiop); - num_chan = sGetAiopNumChan(ctlp, aiop); - total_num_chan += num_chan; - for (chan = 0; chan < num_chan; chan++) - init_r_port(i, aiop, chan, NULL); - } - is_PCI[i] = 0; - if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) { - num_chan = sGetAiopNumChan(ctlp, 0); - total_num_chan = num_chan; - for (chan = 0; chan < num_chan; chan++) - sModemReset(ctlp, chan, 1); - msleep(500); - for (chan = 0; chan < num_chan; chan++) - sModemReset(ctlp, chan, 0); - msleep(500); - strcpy(rocketModel[i].modelString, "RocketModem ISA"); - } else { - strcpy(rocketModel[i].modelString, "RocketPort ISA"); - } - rocketModel[i].numPorts = total_num_chan; - rocketModel[i].model = MODEL_ISA; - - printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n", - i, rcktpt_io_addr[i], num_aiops, type_string); - - printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n", - rocketModel[i].modelString, - rocketModel[i].startingPortNumber, - rocketModel[i].startingPortNumber + - rocketModel[i].numPorts - 1); - - return (1); -} - -static const struct tty_operations rocket_ops = { - .open = rp_open, - .close = rp_close, - .write = rp_write, - .put_char = rp_put_char, - .write_room = rp_write_room, - .chars_in_buffer = rp_chars_in_buffer, - .flush_buffer = rp_flush_buffer, - .ioctl = rp_ioctl, - .throttle = rp_throttle, - .unthrottle = rp_unthrottle, - .set_termios = rp_set_termios, - .stop = rp_stop, - .start = rp_start, - .hangup = rp_hangup, - .break_ctl = rp_break, - .send_xchar = rp_send_xchar, - .wait_until_sent = rp_wait_until_sent, - .tiocmget = rp_tiocmget, - .tiocmset = rp_tiocmset, -}; - -static const struct tty_port_operations rocket_port_ops = { - .carrier_raised = carrier_raised, - .dtr_rts = dtr_rts, -}; - -/* - * The module "startup" routine; it's run when the module is loaded. - */ -static int __init rp_init(void) -{ - int ret = -ENOMEM, pci_boards_found, isa_boards_found, i; - - printk(KERN_INFO "RocketPort device driver module, version %s, %s\n", - ROCKET_VERSION, ROCKET_DATE); - - rocket_driver = alloc_tty_driver(MAX_RP_PORTS); - if (!rocket_driver) - goto err; - - /* - * If board 1 is non-zero, there is at least one ISA configured. If controller is - * zero, use the default controller IO address of board1 + 0x40. - */ - if (board1) { - if (controller == 0) - controller = board1 + 0x40; - } else { - controller = 0; /* Used as a flag, meaning no ISA boards */ - } - - /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */ - if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) { - printk(KERN_ERR "Unable to reserve IO region for first " - "configured ISA RocketPort controller 0x%lx. " - "Driver exiting\n", controller); - ret = -EBUSY; - goto err_tty; - } - - /* Store ISA variable retrieved from command line or .conf file. */ - rcktpt_io_addr[0] = board1; - rcktpt_io_addr[1] = board2; - rcktpt_io_addr[2] = board3; - rcktpt_io_addr[3] = board4; - - rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; - rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0]; - rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; - rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1]; - rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; - rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2]; - rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; - rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3]; - - /* - * Set up the tty driver structure and then register this - * driver with the tty layer. - */ - - rocket_driver->owner = THIS_MODULE; - rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV; - rocket_driver->name = "ttyR"; - rocket_driver->driver_name = "Comtrol RocketPort"; - rocket_driver->major = TTY_ROCKET_MAJOR; - rocket_driver->minor_start = 0; - rocket_driver->type = TTY_DRIVER_TYPE_SERIAL; - rocket_driver->subtype = SERIAL_TYPE_NORMAL; - rocket_driver->init_termios = tty_std_termios; - rocket_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - rocket_driver->init_termios.c_ispeed = 9600; - rocket_driver->init_termios.c_ospeed = 9600; -#ifdef ROCKET_SOFT_FLOW - rocket_driver->flags |= TTY_DRIVER_REAL_RAW; -#endif - tty_set_operations(rocket_driver, &rocket_ops); - - ret = tty_register_driver(rocket_driver); - if (ret < 0) { - printk(KERN_ERR "Couldn't install tty RocketPort driver\n"); - goto err_controller; - } - -#ifdef ROCKET_DEBUG_OPEN - printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major); -#endif - - /* - * OK, let's probe each of the controllers looking for boards. Any boards found - * will be initialized here. - */ - isa_boards_found = 0; - pci_boards_found = 0; - - for (i = 0; i < NUM_BOARDS; i++) { - if (init_ISA(i)) - isa_boards_found++; - } - -#ifdef CONFIG_PCI - if (isa_boards_found < NUM_BOARDS) - pci_boards_found = init_PCI(isa_boards_found); -#endif - - max_board = pci_boards_found + isa_boards_found; - - if (max_board == 0) { - printk(KERN_ERR "No rocketport ports found; unloading driver\n"); - ret = -ENXIO; - goto err_ttyu; - } - - return 0; -err_ttyu: - tty_unregister_driver(rocket_driver); -err_controller: - if (controller) - release_region(controller, 4); -err_tty: - put_tty_driver(rocket_driver); -err: - return ret; -} - - -static void rp_cleanup_module(void) -{ - int retval; - int i; - - del_timer_sync(&rocket_timer); - - retval = tty_unregister_driver(rocket_driver); - if (retval) - printk(KERN_ERR "Error %d while trying to unregister " - "rocketport driver\n", -retval); - - for (i = 0; i < MAX_RP_PORTS; i++) - if (rp_table[i]) { - tty_unregister_device(rocket_driver, i); - kfree(rp_table[i]); - } - - put_tty_driver(rocket_driver); - - for (i = 0; i < NUM_BOARDS; i++) { - if (rcktpt_io_addr[i] <= 0 || is_PCI[i]) - continue; - release_region(rcktpt_io_addr[i], 64); - } - if (controller) - release_region(controller, 4); -} - -/*************************************************************************** -Function: sInitController -Purpose: Initialization of controller global registers and controller - structure. -Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize, - IRQNum,Frequency,PeriodicOnly) - CONTROLLER_T *CtlP; Ptr to controller structure - int CtlNum; Controller number - ByteIO_t MudbacIO; Mudbac base I/O address. - ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. - This list must be in the order the AIOPs will be found on the - controller. Once an AIOP in the list is not found, it is - assumed that there are no more AIOPs on the controller. - int AiopIOListSize; Number of addresses in AiopIOList - int IRQNum; Interrupt Request number. Can be any of the following: - 0: Disable global interrupts - 3: IRQ 3 - 4: IRQ 4 - 5: IRQ 5 - 9: IRQ 9 - 10: IRQ 10 - 11: IRQ 11 - 12: IRQ 12 - 15: IRQ 15 - Byte_t Frequency: A flag identifying the frequency - of the periodic interrupt, can be any one of the following: - FREQ_DIS - periodic interrupt disabled - FREQ_137HZ - 137 Hertz - FREQ_69HZ - 69 Hertz - FREQ_34HZ - 34 Hertz - FREQ_17HZ - 17 Hertz - FREQ_9HZ - 9 Hertz - FREQ_4HZ - 4 Hertz - If IRQNum is set to 0 the Frequency parameter is - overidden, it is forced to a value of FREQ_DIS. - int PeriodicOnly: 1 if all interrupts except the periodic - interrupt are to be blocked. - 0 is both the periodic interrupt and - other channel interrupts are allowed. - If IRQNum is set to 0 the PeriodicOnly parameter is - overidden, it is forced to a value of 0. -Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller - initialization failed. - -Comments: - If periodic interrupts are to be disabled but AIOP interrupts - are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. - - If interrupts are to be completely disabled set IRQNum to 0. - - Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an - invalid combination. - - This function performs initialization of global interrupt modes, - but it does not actually enable global interrupts. To enable - and disable global interrupts use functions sEnGlobalInt() and - sDisGlobalInt(). Enabling of global interrupts is normally not - done until all other initializations are complete. - - Even if interrupts are globally enabled, they must also be - individually enabled for each channel that is to generate - interrupts. - -Warnings: No range checking on any of the parameters is done. - - No context switches are allowed while executing this function. - - After this function all AIOPs on the controller are disabled, - they can be enabled with sEnAiop(). -*/ -static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, - ByteIO_t * AiopIOList, int AiopIOListSize, - int IRQNum, Byte_t Frequency, int PeriodicOnly) -{ - int i; - ByteIO_t io; - int done; - - CtlP->AiopIntrBits = aiop_intr_bits; - CtlP->AltChanRingIndicator = 0; - CtlP->CtlNum = CtlNum; - CtlP->CtlID = CTLID_0001; /* controller release 1 */ - CtlP->BusType = isISA; - CtlP->MBaseIO = MudbacIO; - CtlP->MReg1IO = MudbacIO + 1; - CtlP->MReg2IO = MudbacIO + 2; - CtlP->MReg3IO = MudbacIO + 3; -#if 1 - CtlP->MReg2 = 0; /* interrupt disable */ - CtlP->MReg3 = 0; /* no periodic interrupts */ -#else - if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */ - CtlP->MReg2 = 0; /* interrupt disable */ - CtlP->MReg3 = 0; /* no periodic interrupts */ - } else { - CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */ - CtlP->MReg3 = Frequency; /* set frequency */ - if (PeriodicOnly) { /* periodic interrupt only */ - CtlP->MReg3 |= PERIODIC_ONLY; - } - } -#endif - sOutB(CtlP->MReg2IO, CtlP->MReg2); - sOutB(CtlP->MReg3IO, CtlP->MReg3); - sControllerEOI(CtlP); /* clear EOI if warm init */ - /* Init AIOPs */ - CtlP->NumAiop = 0; - for (i = done = 0; i < AiopIOListSize; i++) { - io = AiopIOList[i]; - CtlP->AiopIO[i] = (WordIO_t) io; - CtlP->AiopIntChanIO[i] = io + _INT_CHAN; - sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */ - sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */ - if (done) - continue; - sEnAiop(CtlP, i); /* enable the AIOP */ - CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ - if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ - done = 1; /* done looking for AIOPs */ - else { - CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ - sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ - sOutB(io + _INDX_DATA, sClockPrescale); - CtlP->NumAiop++; /* bump count of AIOPs */ - } - sDisAiop(CtlP, i); /* disable AIOP */ - } - - if (CtlP->NumAiop == 0) - return (-1); - else - return (CtlP->NumAiop); -} - -/*************************************************************************** -Function: sPCIInitController -Purpose: Initialization of controller global registers and controller - structure. -Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize, - IRQNum,Frequency,PeriodicOnly) - CONTROLLER_T *CtlP; Ptr to controller structure - int CtlNum; Controller number - ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. - This list must be in the order the AIOPs will be found on the - controller. Once an AIOP in the list is not found, it is - assumed that there are no more AIOPs on the controller. - int AiopIOListSize; Number of addresses in AiopIOList - int IRQNum; Interrupt Request number. Can be any of the following: - 0: Disable global interrupts - 3: IRQ 3 - 4: IRQ 4 - 5: IRQ 5 - 9: IRQ 9 - 10: IRQ 10 - 11: IRQ 11 - 12: IRQ 12 - 15: IRQ 15 - Byte_t Frequency: A flag identifying the frequency - of the periodic interrupt, can be any one of the following: - FREQ_DIS - periodic interrupt disabled - FREQ_137HZ - 137 Hertz - FREQ_69HZ - 69 Hertz - FREQ_34HZ - 34 Hertz - FREQ_17HZ - 17 Hertz - FREQ_9HZ - 9 Hertz - FREQ_4HZ - 4 Hertz - If IRQNum is set to 0 the Frequency parameter is - overidden, it is forced to a value of FREQ_DIS. - int PeriodicOnly: 1 if all interrupts except the periodic - interrupt are to be blocked. - 0 is both the periodic interrupt and - other channel interrupts are allowed. - If IRQNum is set to 0 the PeriodicOnly parameter is - overidden, it is forced to a value of 0. -Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller - initialization failed. - -Comments: - If periodic interrupts are to be disabled but AIOP interrupts - are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. - - If interrupts are to be completely disabled set IRQNum to 0. - - Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an - invalid combination. - - This function performs initialization of global interrupt modes, - but it does not actually enable global interrupts. To enable - and disable global interrupts use functions sEnGlobalInt() and - sDisGlobalInt(). Enabling of global interrupts is normally not - done until all other initializations are complete. - - Even if interrupts are globally enabled, they must also be - individually enabled for each channel that is to generate - interrupts. - -Warnings: No range checking on any of the parameters is done. - - No context switches are allowed while executing this function. - - After this function all AIOPs on the controller are disabled, - they can be enabled with sEnAiop(). -*/ -static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, - ByteIO_t * AiopIOList, int AiopIOListSize, - WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, - int PeriodicOnly, int altChanRingIndicator, - int UPCIRingInd) -{ - int i; - ByteIO_t io; - - CtlP->AltChanRingIndicator = altChanRingIndicator; - CtlP->UPCIRingInd = UPCIRingInd; - CtlP->CtlNum = CtlNum; - CtlP->CtlID = CTLID_0001; /* controller release 1 */ - CtlP->BusType = isPCI; /* controller release 1 */ - - if (ConfigIO) { - CtlP->isUPCI = 1; - CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL; - CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL; - CtlP->AiopIntrBits = upci_aiop_intr_bits; - } else { - CtlP->isUPCI = 0; - CtlP->PCIIO = - (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC); - CtlP->AiopIntrBits = aiop_intr_bits; - } - - sPCIControllerEOI(CtlP); /* clear EOI if warm init */ - /* Init AIOPs */ - CtlP->NumAiop = 0; - for (i = 0; i < AiopIOListSize; i++) { - io = AiopIOList[i]; - CtlP->AiopIO[i] = (WordIO_t) io; - CtlP->AiopIntChanIO[i] = io + _INT_CHAN; - - CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ - if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ - break; /* done looking for AIOPs */ - - CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ - sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ - sOutB(io + _INDX_DATA, sClockPrescale); - CtlP->NumAiop++; /* bump count of AIOPs */ - } - - if (CtlP->NumAiop == 0) - return (-1); - else - return (CtlP->NumAiop); -} - -/*************************************************************************** -Function: sReadAiopID -Purpose: Read the AIOP idenfication number directly from an AIOP. -Call: sReadAiopID(io) - ByteIO_t io: AIOP base I/O address -Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X - is replace by an identifying number. - Flag AIOPID_NULL if no valid AIOP is found -Warnings: No context switches are allowed while executing this function. - -*/ -static int sReadAiopID(ByteIO_t io) -{ - Byte_t AiopID; /* ID byte from AIOP */ - - sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */ - sOutB(io + _CMD_REG, 0x0); - AiopID = sInW(io + _CHN_STAT0) & 0x07; - if (AiopID == 0x06) - return (1); - else /* AIOP does not exist */ - return (-1); -} - -/*************************************************************************** -Function: sReadAiopNumChan -Purpose: Read the number of channels available in an AIOP directly from - an AIOP. -Call: sReadAiopNumChan(io) - WordIO_t io: AIOP base I/O address -Return: int: The number of channels available -Comments: The number of channels is determined by write/reads from identical - offsets within the SRAM address spaces for channels 0 and 4. - If the channel 4 space is mirrored to channel 0 it is a 4 channel - AIOP, otherwise it is an 8 channel. -Warnings: No context switches are allowed while executing this function. -*/ -static int sReadAiopNumChan(WordIO_t io) -{ - Word_t x; - static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 }; - - /* write to chan 0 SRAM */ - out32((DWordIO_t) io + _INDX_ADDR, R); - sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */ - x = sInW(io + _INDX_DATA); - sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */ - if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */ - return (8); - else - return (4); -} - -/*************************************************************************** -Function: sInitChan -Purpose: Initialization of a channel and channel structure -Call: sInitChan(CtlP,ChP,AiopNum,ChanNum) - CONTROLLER_T *CtlP; Ptr to controller structure - CHANNEL_T *ChP; Ptr to channel structure - int AiopNum; AIOP number within controller - int ChanNum; Channel number within AIOP -Return: int: 1 if initialization succeeded, 0 if it fails because channel - number exceeds number of channels available in AIOP. -Comments: This function must be called before a channel can be used. -Warnings: No range checking on any of the parameters is done. - - No context switches are allowed while executing this function. -*/ -static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, - int ChanNum) -{ - int i; - WordIO_t AiopIO; - WordIO_t ChIOOff; - Byte_t *ChR; - Word_t ChOff; - static Byte_t R[4]; - int brd9600; - - if (ChanNum >= CtlP->AiopNumChan[AiopNum]) - return 0; /* exceeds num chans in AIOP */ - - /* Channel, AIOP, and controller identifiers */ - ChP->CtlP = CtlP; - ChP->ChanID = CtlP->AiopID[AiopNum]; - ChP->AiopNum = AiopNum; - ChP->ChanNum = ChanNum; - - /* Global direct addresses */ - AiopIO = CtlP->AiopIO[AiopNum]; - ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG; - ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN; - ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK; - ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR; - ChP->IndexData = AiopIO + _INDX_DATA; - - /* Channel direct addresses */ - ChIOOff = AiopIO + ChP->ChanNum * 2; - ChP->TxRxData = ChIOOff + _TD0; - ChP->ChanStat = ChIOOff + _CHN_STAT0; - ChP->TxRxCount = ChIOOff + _FIFO_CNT0; - ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0; - - /* Initialize the channel from the RData array */ - for (i = 0; i < RDATASIZE; i += 4) { - R[0] = RData[i]; - R[1] = RData[i + 1] + 0x10 * ChanNum; - R[2] = RData[i + 2]; - R[3] = RData[i + 3]; - out32(ChP->IndexAddr, R); - } - - ChR = ChP->R; - for (i = 0; i < RREGDATASIZE; i += 4) { - ChR[i] = RRegData[i]; - ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum; - ChR[i + 2] = RRegData[i + 2]; - ChR[i + 3] = RRegData[i + 3]; - } - - /* Indexed registers */ - ChOff = (Word_t) ChanNum *0x1000; - - if (sClockPrescale == 0x14) - brd9600 = 47; - else - brd9600 = 23; - - ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD); - ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8); - ChP->BaudDiv[2] = (Byte_t) brd9600; - ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8); - out32(ChP->IndexAddr, ChP->BaudDiv); - - ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL); - ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8); - ChP->TxControl[2] = 0; - ChP->TxControl[3] = 0; - out32(ChP->IndexAddr, ChP->TxControl); - - ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL); - ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8); - ChP->RxControl[2] = 0; - ChP->RxControl[3] = 0; - out32(ChP->IndexAddr, ChP->RxControl); - - ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS); - ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8); - ChP->TxEnables[2] = 0; - ChP->TxEnables[3] = 0; - out32(ChP->IndexAddr, ChP->TxEnables); - - ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1); - ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8); - ChP->TxCompare[2] = 0; - ChP->TxCompare[3] = 0; - out32(ChP->IndexAddr, ChP->TxCompare); - - ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1); - ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8); - ChP->TxReplace1[2] = 0; - ChP->TxReplace1[3] = 0; - out32(ChP->IndexAddr, ChP->TxReplace1); - - ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2); - ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8); - ChP->TxReplace2[2] = 0; - ChP->TxReplace2[3] = 0; - out32(ChP->IndexAddr, ChP->TxReplace2); - - ChP->TxFIFOPtrs = ChOff + _TXF_OUTP; - ChP->TxFIFO = ChOff + _TX_FIFO; - - sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */ - sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */ - sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ - sOutW(ChP->IndexData, 0); - ChP->RxFIFOPtrs = ChOff + _RXF_OUTP; - ChP->RxFIFO = ChOff + _RX_FIFO; - - sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */ - sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */ - sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ - sOutW(ChP->IndexData, 0); - sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ - sOutW(ChP->IndexData, 0); - ChP->TxPrioCnt = ChOff + _TXP_CNT; - sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt); - sOutB(ChP->IndexData, 0); - ChP->TxPrioPtr = ChOff + _TXP_PNTR; - sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr); - sOutB(ChP->IndexData, 0); - ChP->TxPrioBuf = ChOff + _TXP_BUF; - sEnRxProcessor(ChP); /* start the Rx processor */ - - return 1; -} - -/*************************************************************************** -Function: sStopRxProcessor -Purpose: Stop the receive processor from processing a channel. -Call: sStopRxProcessor(ChP) - CHANNEL_T *ChP; Ptr to channel structure - -Comments: The receive processor can be started again with sStartRxProcessor(). - This function causes the receive processor to skip over the - stopped channel. It does not stop it from processing other channels. - -Warnings: No context switches are allowed while executing this function. - - Do not leave the receive processor stopped for more than one - character time. - - After calling this function a delay of 4 uS is required to ensure - that the receive processor is no longer processing this channel. -*/ -static void sStopRxProcessor(CHANNEL_T * ChP) -{ - Byte_t R[4]; - - R[0] = ChP->R[0]; - R[1] = ChP->R[1]; - R[2] = 0x0a; - R[3] = ChP->R[3]; - out32(ChP->IndexAddr, R); -} - -/*************************************************************************** -Function: sFlushRxFIFO -Purpose: Flush the Rx FIFO -Call: sFlushRxFIFO(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: void -Comments: To prevent data from being enqueued or dequeued in the Tx FIFO - while it is being flushed the receive processor is stopped - and the transmitter is disabled. After these operations a - 4 uS delay is done before clearing the pointers to allow - the receive processor to stop. These items are handled inside - this function. -Warnings: No context switches are allowed while executing this function. -*/ -static void sFlushRxFIFO(CHANNEL_T * ChP) -{ - int i; - Byte_t Ch; /* channel number within AIOP */ - int RxFIFOEnabled; /* 1 if Rx FIFO enabled */ - - if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */ - return; /* don't need to flush */ - - RxFIFOEnabled = 0; - if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */ - RxFIFOEnabled = 1; - sDisRxFIFO(ChP); /* disable it */ - for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */ - sInB(ChP->IntChan); /* depends on bus i/o timing */ - } - sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */ - Ch = (Byte_t) sGetChanNum(ChP); - sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */ - sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */ - sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ - sOutW(ChP->IndexData, 0); - sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ - sOutW(ChP->IndexData, 0); - if (RxFIFOEnabled) - sEnRxFIFO(ChP); /* enable Rx FIFO */ -} - -/*************************************************************************** -Function: sFlushTxFIFO -Purpose: Flush the Tx FIFO -Call: sFlushTxFIFO(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: void -Comments: To prevent data from being enqueued or dequeued in the Tx FIFO - while it is being flushed the receive processor is stopped - and the transmitter is disabled. After these operations a - 4 uS delay is done before clearing the pointers to allow - the receive processor to stop. These items are handled inside - this function. -Warnings: No context switches are allowed while executing this function. -*/ -static void sFlushTxFIFO(CHANNEL_T * ChP) -{ - int i; - Byte_t Ch; /* channel number within AIOP */ - int TxEnabled; /* 1 if transmitter enabled */ - - if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */ - return; /* don't need to flush */ - - TxEnabled = 0; - if (ChP->TxControl[3] & TX_ENABLE) { - TxEnabled = 1; - sDisTransmit(ChP); /* disable transmitter */ - } - sStopRxProcessor(ChP); /* stop Rx processor */ - for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */ - sInB(ChP->IntChan); /* depends on bus i/o timing */ - Ch = (Byte_t) sGetChanNum(ChP); - sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */ - sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */ - sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ - sOutW(ChP->IndexData, 0); - if (TxEnabled) - sEnTransmit(ChP); /* enable transmitter */ - sStartRxProcessor(ChP); /* restart Rx processor */ -} - -/*************************************************************************** -Function: sWriteTxPrioByte -Purpose: Write a byte of priority transmit data to a channel -Call: sWriteTxPrioByte(ChP,Data) - CHANNEL_T *ChP; Ptr to channel structure - Byte_t Data; The transmit data byte - -Return: int: 1 if the bytes is successfully written, otherwise 0. - -Comments: The priority byte is transmitted before any data in the Tx FIFO. - -Warnings: No context switches are allowed while executing this function. -*/ -static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data) -{ - Byte_t DWBuf[4]; /* buffer for double word writes */ - Word_t *WordPtr; /* must be far because Win SS != DS */ - register DWordIO_t IndexAddr; - - if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */ - IndexAddr = ChP->IndexAddr; - sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */ - if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */ - return (0); /* nothing sent */ - - WordPtr = (Word_t *) (&DWBuf[0]); - *WordPtr = ChP->TxPrioBuf; /* data byte address */ - - DWBuf[2] = Data; /* data byte value */ - out32(IndexAddr, DWBuf); /* write it out */ - - *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */ - - DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */ - DWBuf[3] = 0; /* priority buffer pointer */ - out32(IndexAddr, DWBuf); /* write it out */ - } else { /* write it to Tx FIFO */ - - sWriteTxByte(sGetTxRxDataIO(ChP), Data); - } - return (1); /* 1 byte sent */ -} - -/*************************************************************************** -Function: sEnInterrupts -Purpose: Enable one or more interrupts for a channel -Call: sEnInterrupts(ChP,Flags) - CHANNEL_T *ChP; Ptr to channel structure - Word_t Flags: Interrupt enable flags, can be any combination - of the following flags: - TXINT_EN: Interrupt on Tx FIFO empty - RXINT_EN: Interrupt on Rx FIFO at trigger level (see - sSetRxTrigger()) - SRCINT_EN: Interrupt on SRC (Special Rx Condition) - MCINT_EN: Interrupt on modem input change - CHANINT_EN: Allow channel interrupt signal to the AIOP's - Interrupt Channel Register. -Return: void -Comments: If an interrupt enable flag is set in Flags, that interrupt will be - enabled. If an interrupt enable flag is not set in Flags, that - interrupt will not be changed. Interrupts can be disabled with - function sDisInterrupts(). - - This function sets the appropriate bit for the channel in the AIOP's - Interrupt Mask Register if the CHANINT_EN flag is set. This allows - this channel's bit to be set in the AIOP's Interrupt Channel Register. - - Interrupts must also be globally enabled before channel interrupts - will be passed on to the host. This is done with function - sEnGlobalInt(). - - In some cases it may be desirable to disable interrupts globally but - enable channel interrupts. This would allow the global interrupt - status register to be used to determine which AIOPs need service. -*/ -static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags) -{ - Byte_t Mask; /* Interrupt Mask Register */ - - ChP->RxControl[2] |= - ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); - - out32(ChP->IndexAddr, ChP->RxControl); - - ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN); - - out32(ChP->IndexAddr, ChP->TxControl); - - if (Flags & CHANINT_EN) { - Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum]; - sOutB(ChP->IntMask, Mask); - } -} - -/*************************************************************************** -Function: sDisInterrupts -Purpose: Disable one or more interrupts for a channel -Call: sDisInterrupts(ChP,Flags) - CHANNEL_T *ChP; Ptr to channel structure - Word_t Flags: Interrupt flags, can be any combination - of the following flags: - TXINT_EN: Interrupt on Tx FIFO empty - RXINT_EN: Interrupt on Rx FIFO at trigger level (see - sSetRxTrigger()) - SRCINT_EN: Interrupt on SRC (Special Rx Condition) - MCINT_EN: Interrupt on modem input change - CHANINT_EN: Disable channel interrupt signal to the - AIOP's Interrupt Channel Register. -Return: void -Comments: If an interrupt flag is set in Flags, that interrupt will be - disabled. If an interrupt flag is not set in Flags, that - interrupt will not be changed. Interrupts can be enabled with - function sEnInterrupts(). - - This function clears the appropriate bit for the channel in the AIOP's - Interrupt Mask Register if the CHANINT_EN flag is set. This blocks - this channel's bit from being set in the AIOP's Interrupt Channel - Register. -*/ -static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags) -{ - Byte_t Mask; /* Interrupt Mask Register */ - - ChP->RxControl[2] &= - ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); - out32(ChP->IndexAddr, ChP->RxControl); - ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN); - out32(ChP->IndexAddr, ChP->TxControl); - - if (Flags & CHANINT_EN) { - Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum]; - sOutB(ChP->IntMask, Mask); - } -} - -static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode) -{ - sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum); -} - -/* - * Not an official SSCI function, but how to reset RocketModems. - * ISA bus version - */ -static void sModemReset(CONTROLLER_T * CtlP, int chan, int on) -{ - ByteIO_t addr; - Byte_t val; - - addr = CtlP->AiopIO[0] + 0x400; - val = sInB(CtlP->MReg3IO); - /* if AIOP[1] is not enabled, enable it */ - if ((val & 2) == 0) { - val = sInB(CtlP->MReg2IO); - sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03)); - sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6)); - } - - sEnAiop(CtlP, 1); - if (!on) - addr += 8; - sOutB(addr + chan, 0); /* apply or remove reset */ - sDisAiop(CtlP, 1); -} - -/* - * Not an official SSCI function, but how to reset RocketModems. - * PCI bus version - */ -static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on) -{ - ByteIO_t addr; - - addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */ - if (!on) - addr += 8; - sOutB(addr + chan, 0); /* apply or remove reset */ -} - -/* Resets the speaker controller on RocketModem II and III devices */ -static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model) -{ - ByteIO_t addr; - - /* RocketModem II speaker control is at the 8th port location of offset 0x40 */ - if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) { - addr = CtlP->AiopIO[0] + 0x4F; - sOutB(addr, 0); - } - - /* RocketModem III speaker control is at the 1st port location of offset 0x80 */ - if ((model == MODEL_UPCI_RM3_8PORT) - || (model == MODEL_UPCI_RM3_4PORT)) { - addr = CtlP->AiopIO[0] + 0x88; - sOutB(addr, 0); - } -} - -/* Returns the line number given the controller (board), aiop and channel number */ -static unsigned char GetLineNumber(int ctrl, int aiop, int ch) -{ - return lineNumbers[(ctrl << 5) | (aiop << 3) | ch]; -} - -/* - * Stores the line number associated with a given controller (board), aiop - * and channel number. - * Returns: The line number assigned - */ -static unsigned char SetLineNumber(int ctrl, int aiop, int ch) -{ - lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++; - return (nextLineNumber - 1); -} diff --git a/drivers/char/rocket.h b/drivers/char/rocket.h deleted file mode 100644 index ec863f35f1a9..000000000000 --- a/drivers/char/rocket.h +++ /dev/null @@ -1,111 +0,0 @@ -/* - * rocket.h --- the exported interface of the rocket driver to its configuration program. - * - * Written by Theodore Ts'o, Copyright 1997. - * Copyright 1997 Comtrol Corporation. - * - */ - -/* Model Information Struct */ -typedef struct { - unsigned long model; - char modelString[80]; - unsigned long numPorts; - int loadrm2; - int startingPortNumber; -} rocketModel_t; - -struct rocket_config { - int line; - int flags; - int closing_wait; - int close_delay; - int port; - int reserved[32]; -}; - -struct rocket_ports { - int tty_major; - int callout_major; - rocketModel_t rocketModel[8]; -}; - -struct rocket_version { - char rocket_version[32]; - char rocket_date[32]; - char reserved[64]; -}; - -/* - * Rocketport flags - */ -/*#define ROCKET_CALLOUT_NOHUP 0x00000001 */ -#define ROCKET_FORCE_CD 0x00000002 -#define ROCKET_HUP_NOTIFY 0x00000004 -#define ROCKET_SPLIT_TERMIOS 0x00000008 -#define ROCKET_SPD_MASK 0x00000070 -#define ROCKET_SPD_HI 0x00000010 /* Use 56000 instead of 38400 bps */ -#define ROCKET_SPD_VHI 0x00000020 /* Use 115200 instead of 38400 bps */ -#define ROCKET_SPD_SHI 0x00000030 /* Use 230400 instead of 38400 bps */ -#define ROCKET_SPD_WARP 0x00000040 /* Use 460800 instead of 38400 bps */ -#define ROCKET_SAK 0x00000080 -#define ROCKET_SESSION_LOCKOUT 0x00000100 -#define ROCKET_PGRP_LOCKOUT 0x00000200 -#define ROCKET_RTS_TOGGLE 0x00000400 -#define ROCKET_MODE_MASK 0x00003000 -#define ROCKET_MODE_RS232 0x00000000 -#define ROCKET_MODE_RS485 0x00001000 -#define ROCKET_MODE_RS422 0x00002000 -#define ROCKET_FLAGS 0x00003FFF - -#define ROCKET_USR_MASK 0x0071 /* Legal flags that non-privileged - * users can set or reset */ - -/* - * For closing_wait and closing_wait2 - */ -#define ROCKET_CLOSING_WAIT_NONE ASYNC_CLOSING_WAIT_NONE -#define ROCKET_CLOSING_WAIT_INF ASYNC_CLOSING_WAIT_INF - -/* - * Rocketport ioctls -- "RP" - */ -#define RCKP_GET_STRUCT 0x00525001 -#define RCKP_GET_CONFIG 0x00525002 -#define RCKP_SET_CONFIG 0x00525003 -#define RCKP_GET_PORTS 0x00525004 -#define RCKP_RESET_RM2 0x00525005 -#define RCKP_GET_VERSION 0x00525006 - -/* Rocketport Models */ -#define MODEL_RP32INTF 0x0001 /* RP 32 port w/external I/F */ -#define MODEL_RP8INTF 0x0002 /* RP 8 port w/external I/F */ -#define MODEL_RP16INTF 0x0003 /* RP 16 port w/external I/F */ -#define MODEL_RP8OCTA 0x0005 /* RP 8 port w/octa cable */ -#define MODEL_RP4QUAD 0x0004 /* RP 4 port w/quad cable */ -#define MODEL_RP8J 0x0006 /* RP 8 port w/RJ11 connectors */ -#define MODEL_RP4J 0x0007 /* RP 4 port w/RJ45 connectors */ -#define MODEL_RP8SNI 0x0008 /* RP 8 port w/ DB78 SNI connector */ -#define MODEL_RP16SNI 0x0009 /* RP 16 port w/ DB78 SNI connector */ -#define MODEL_RPP4 0x000A /* RP Plus 4 port */ -#define MODEL_RPP8 0x000B /* RP Plus 8 port */ -#define MODEL_RP2_232 0x000E /* RP Plus 2 port RS232 */ -#define MODEL_RP2_422 0x000F /* RP Plus 2 port RS232 */ - -/* Rocketmodem II Models */ -#define MODEL_RP6M 0x000C /* RM 6 port */ -#define MODEL_RP4M 0x000D /* RM 4 port */ - -/* Universal PCI boards */ -#define MODEL_UPCI_RP32INTF 0x0801 /* RP UPCI 32 port w/external I/F */ -#define MODEL_UPCI_RP8INTF 0x0802 /* RP UPCI 8 port w/external I/F */ -#define MODEL_UPCI_RP16INTF 0x0803 /* RP UPCI 16 port w/external I/F */ -#define MODEL_UPCI_RP8OCTA 0x0805 /* RP UPCI 8 port w/octa cable */ -#define MODEL_UPCI_RM3_8PORT 0x080C /* RP UPCI Rocketmodem III 8 port */ -#define MODEL_UPCI_RM3_4PORT 0x080C /* RP UPCI Rocketmodem III 4 port */ - -/* Compact PCI 16 port */ -#define MODEL_CPCI_RP16INTF 0x0903 /* RP Compact PCI 16 port w/external I/F */ - -/* All ISA boards */ -#define MODEL_ISA 0x1000 diff --git a/drivers/char/rocket_int.h b/drivers/char/rocket_int.h deleted file mode 100644 index 67e0f1e778a2..000000000000 --- a/drivers/char/rocket_int.h +++ /dev/null @@ -1,1214 +0,0 @@ -/* - * rocket_int.h --- internal header file for rocket.c - * - * Written by Theodore Ts'o, Copyright 1997. - * Copyright 1997 Comtrol Corporation. - * - */ - -/* - * Definition of the types in rcktpt_type - */ -#define ROCKET_TYPE_NORMAL 0 -#define ROCKET_TYPE_MODEM 1 -#define ROCKET_TYPE_MODEMII 2 -#define ROCKET_TYPE_MODEMIII 3 -#define ROCKET_TYPE_PC104 4 - -#include - -#include -#include - -typedef unsigned char Byte_t; -typedef unsigned int ByteIO_t; - -typedef unsigned int Word_t; -typedef unsigned int WordIO_t; - -typedef unsigned int DWordIO_t; - -/* - * Note! Normally the Linux I/O macros already take care of - * byte-swapping the I/O instructions. However, all accesses using - * sOutDW aren't really 32-bit accesses, but should be handled in byte - * order. Hence the use of the cpu_to_le32() macro to byte-swap - * things to no-op the byte swapping done by the big-endian outl() - * instruction. - */ - -static inline void sOutB(unsigned short port, unsigned char value) -{ -#ifdef ROCKET_DEBUG_IO - printk(KERN_DEBUG "sOutB(%x, %x)...\n", port, value); -#endif - outb_p(value, port); -} - -static inline void sOutW(unsigned short port, unsigned short value) -{ -#ifdef ROCKET_DEBUG_IO - printk(KERN_DEBUG "sOutW(%x, %x)...\n", port, value); -#endif - outw_p(value, port); -} - -static inline void out32(unsigned short port, Byte_t *p) -{ - u32 value = get_unaligned_le32(p); -#ifdef ROCKET_DEBUG_IO - printk(KERN_DEBUG "out32(%x, %lx)...\n", port, value); -#endif - outl_p(value, port); -} - -static inline unsigned char sInB(unsigned short port) -{ - return inb_p(port); -} - -static inline unsigned short sInW(unsigned short port) -{ - return inw_p(port); -} - -/* This is used to move arrays of bytes so byte swapping isn't appropriate. */ -#define sOutStrW(port, addr, count) if (count) outsw(port, addr, count) -#define sInStrW(port, addr, count) if (count) insw(port, addr, count) - -#define CTL_SIZE 8 -#define AIOP_CTL_SIZE 4 -#define CHAN_AIOP_SIZE 8 -#define MAX_PORTS_PER_AIOP 8 -#define MAX_AIOPS_PER_BOARD 4 -#define MAX_PORTS_PER_BOARD 32 - -/* Bus type ID */ -#define isISA 0 -#define isPCI 1 -#define isMC 2 - -/* Controller ID numbers */ -#define CTLID_NULL -1 /* no controller exists */ -#define CTLID_0001 0x0001 /* controller release 1 */ - -/* AIOP ID numbers, identifies AIOP type implementing channel */ -#define AIOPID_NULL -1 /* no AIOP or channel exists */ -#define AIOPID_0001 0x0001 /* AIOP release 1 */ - -/************************************************************************ - Global Register Offsets - Direct Access - Fixed values -************************************************************************/ - -#define _CMD_REG 0x38 /* Command Register 8 Write */ -#define _INT_CHAN 0x39 /* Interrupt Channel Register 8 Read */ -#define _INT_MASK 0x3A /* Interrupt Mask Register 8 Read / Write */ -#define _UNUSED 0x3B /* Unused 8 */ -#define _INDX_ADDR 0x3C /* Index Register Address 16 Write */ -#define _INDX_DATA 0x3E /* Index Register Data 8/16 Read / Write */ - -/************************************************************************ - Channel Register Offsets for 1st channel in AIOP - Direct Access -************************************************************************/ -#define _TD0 0x00 /* Transmit Data 16 Write */ -#define _RD0 0x00 /* Receive Data 16 Read */ -#define _CHN_STAT0 0x20 /* Channel Status 8/16 Read / Write */ -#define _FIFO_CNT0 0x10 /* Transmit/Receive FIFO Count 16 Read */ -#define _INT_ID0 0x30 /* Interrupt Identification 8 Read */ - -/************************************************************************ - Tx Control Register Offsets - Indexed - External - Fixed -************************************************************************/ -#define _TX_ENBLS 0x980 /* Tx Processor Enables Register 8 Read / Write */ -#define _TXCMP1 0x988 /* Transmit Compare Value #1 8 Read / Write */ -#define _TXCMP2 0x989 /* Transmit Compare Value #2 8 Read / Write */ -#define _TXREP1B1 0x98A /* Tx Replace Value #1 - Byte 1 8 Read / Write */ -#define _TXREP1B2 0x98B /* Tx Replace Value #1 - Byte 2 8 Read / Write */ -#define _TXREP2 0x98C /* Transmit Replace Value #2 8 Read / Write */ - -/************************************************************************ -Memory Controller Register Offsets - Indexed - External - Fixed -************************************************************************/ -#define _RX_FIFO 0x000 /* Rx FIFO */ -#define _TX_FIFO 0x800 /* Tx FIFO */ -#define _RXF_OUTP 0x990 /* Rx FIFO OUT pointer 16 Read / Write */ -#define _RXF_INP 0x992 /* Rx FIFO IN pointer 16 Read / Write */ -#define _TXF_OUTP 0x994 /* Tx FIFO OUT pointer 8 Read / Write */ -#define _TXF_INP 0x995 /* Tx FIFO IN pointer 8 Read / Write */ -#define _TXP_CNT 0x996 /* Tx Priority Count 8 Read / Write */ -#define _TXP_PNTR 0x997 /* Tx Priority Pointer 8 Read / Write */ - -#define PRI_PEND 0x80 /* Priority data pending (bit7, Tx pri cnt) */ -#define TXFIFO_SIZE 255 /* size of Tx FIFO */ -#define RXFIFO_SIZE 1023 /* size of Rx FIFO */ - -/************************************************************************ -Tx Priority Buffer - Indexed - External - Fixed -************************************************************************/ -#define _TXP_BUF 0x9C0 /* Tx Priority Buffer 32 Bytes Read / Write */ -#define TXP_SIZE 0x20 /* 32 bytes */ - -/************************************************************************ -Channel Register Offsets - Indexed - Internal - Fixed -************************************************************************/ - -#define _TX_CTRL 0xFF0 /* Transmit Control 16 Write */ -#define _RX_CTRL 0xFF2 /* Receive Control 8 Write */ -#define _BAUD 0xFF4 /* Baud Rate 16 Write */ -#define _CLK_PRE 0xFF6 /* Clock Prescaler 8 Write */ - -#define STMBREAK 0x08 /* BREAK */ -#define STMFRAME 0x04 /* framing error */ -#define STMRCVROVR 0x02 /* receiver over run error */ -#define STMPARITY 0x01 /* parity error */ -#define STMERROR (STMBREAK | STMFRAME | STMPARITY) -#define STMBREAKH 0x800 /* BREAK */ -#define STMFRAMEH 0x400 /* framing error */ -#define STMRCVROVRH 0x200 /* receiver over run error */ -#define STMPARITYH 0x100 /* parity error */ -#define STMERRORH (STMBREAKH | STMFRAMEH | STMPARITYH) - -#define CTS_ACT 0x20 /* CTS input asserted */ -#define DSR_ACT 0x10 /* DSR input asserted */ -#define CD_ACT 0x08 /* CD input asserted */ -#define TXFIFOMT 0x04 /* Tx FIFO is empty */ -#define TXSHRMT 0x02 /* Tx shift register is empty */ -#define RDA 0x01 /* Rx data available */ -#define DRAINED (TXFIFOMT | TXSHRMT) /* indicates Tx is drained */ - -#define STATMODE 0x8000 /* status mode enable bit */ -#define RXFOVERFL 0x2000 /* receive FIFO overflow */ -#define RX2MATCH 0x1000 /* receive compare byte 2 match */ -#define RX1MATCH 0x0800 /* receive compare byte 1 match */ -#define RXBREAK 0x0400 /* received BREAK */ -#define RXFRAME 0x0200 /* received framing error */ -#define RXPARITY 0x0100 /* received parity error */ -#define STATERROR (RXBREAK | RXFRAME | RXPARITY) - -#define CTSFC_EN 0x80 /* CTS flow control enable bit */ -#define RTSTOG_EN 0x40 /* RTS toggle enable bit */ -#define TXINT_EN 0x10 /* transmit interrupt enable */ -#define STOP2 0x08 /* enable 2 stop bits (0 = 1 stop) */ -#define PARITY_EN 0x04 /* enable parity (0 = no parity) */ -#define EVEN_PAR 0x02 /* even parity (0 = odd parity) */ -#define DATA8BIT 0x01 /* 8 bit data (0 = 7 bit data) */ - -#define SETBREAK 0x10 /* send break condition (must clear) */ -#define LOCALLOOP 0x08 /* local loopback set for test */ -#define SET_DTR 0x04 /* assert DTR */ -#define SET_RTS 0x02 /* assert RTS */ -#define TX_ENABLE 0x01 /* enable transmitter */ - -#define RTSFC_EN 0x40 /* RTS flow control enable */ -#define RXPROC_EN 0x20 /* receive processor enable */ -#define TRIG_NO 0x00 /* Rx FIFO trigger level 0 (no trigger) */ -#define TRIG_1 0x08 /* trigger level 1 char */ -#define TRIG_1_2 0x10 /* trigger level 1/2 */ -#define TRIG_7_8 0x18 /* trigger level 7/8 */ -#define TRIG_MASK 0x18 /* trigger level mask */ -#define SRCINT_EN 0x04 /* special Rx condition interrupt enable */ -#define RXINT_EN 0x02 /* Rx interrupt enable */ -#define MCINT_EN 0x01 /* modem change interrupt enable */ - -#define RXF_TRIG 0x20 /* Rx FIFO trigger level interrupt */ -#define TXFIFO_MT 0x10 /* Tx FIFO empty interrupt */ -#define SRC_INT 0x08 /* special receive condition interrupt */ -#define DELTA_CD 0x04 /* CD change interrupt */ -#define DELTA_CTS 0x02 /* CTS change interrupt */ -#define DELTA_DSR 0x01 /* DSR change interrupt */ - -#define REP1W2_EN 0x10 /* replace byte 1 with 2 bytes enable */ -#define IGN2_EN 0x08 /* ignore byte 2 enable */ -#define IGN1_EN 0x04 /* ignore byte 1 enable */ -#define COMP2_EN 0x02 /* compare byte 2 enable */ -#define COMP1_EN 0x01 /* compare byte 1 enable */ - -#define RESET_ALL 0x80 /* reset AIOP (all channels) */ -#define TXOVERIDE 0x40 /* Transmit software off override */ -#define RESETUART 0x20 /* reset channel's UART */ -#define RESTXFCNT 0x10 /* reset channel's Tx FIFO count register */ -#define RESRXFCNT 0x08 /* reset channel's Rx FIFO count register */ - -#define INTSTAT0 0x01 /* AIOP 0 interrupt status */ -#define INTSTAT1 0x02 /* AIOP 1 interrupt status */ -#define INTSTAT2 0x04 /* AIOP 2 interrupt status */ -#define INTSTAT3 0x08 /* AIOP 3 interrupt status */ - -#define INTR_EN 0x08 /* allow interrupts to host */ -#define INT_STROB 0x04 /* strobe and clear interrupt line (EOI) */ - -/************************************************************************** - MUDBAC remapped for PCI -**************************************************************************/ - -#define _CFG_INT_PCI 0x40 -#define _PCI_INT_FUNC 0x3A - -#define PCI_STROB 0x2000 /* bit 13 of int aiop register */ -#define INTR_EN_PCI 0x0010 /* allow interrupts to host */ - -/* - * Definitions for Universal PCI board registers - */ -#define _PCI_9030_INT_CTRL 0x4c /* Offsets from BAR1 */ -#define _PCI_9030_GPIO_CTRL 0x54 -#define PCI_INT_CTRL_AIOP 0x0001 -#define PCI_GPIO_CTRL_8PORT 0x4000 -#define _PCI_9030_RING_IND 0xc0 /* Offsets from BAR1 */ - -#define CHAN3_EN 0x08 /* enable AIOP 3 */ -#define CHAN2_EN 0x04 /* enable AIOP 2 */ -#define CHAN1_EN 0x02 /* enable AIOP 1 */ -#define CHAN0_EN 0x01 /* enable AIOP 0 */ -#define FREQ_DIS 0x00 -#define FREQ_274HZ 0x60 -#define FREQ_137HZ 0x50 -#define FREQ_69HZ 0x40 -#define FREQ_34HZ 0x30 -#define FREQ_17HZ 0x20 -#define FREQ_9HZ 0x10 -#define PERIODIC_ONLY 0x80 /* only PERIODIC interrupt */ - -#define CHANINT_EN 0x0100 /* flags to enable/disable channel ints */ - -#define RDATASIZE 72 -#define RREGDATASIZE 52 - -/* - * AIOP interrupt bits for ISA/PCI boards and UPCI boards. - */ -#define AIOP_INTR_BIT_0 0x0001 -#define AIOP_INTR_BIT_1 0x0002 -#define AIOP_INTR_BIT_2 0x0004 -#define AIOP_INTR_BIT_3 0x0008 - -#define AIOP_INTR_BITS ( \ - AIOP_INTR_BIT_0 \ - | AIOP_INTR_BIT_1 \ - | AIOP_INTR_BIT_2 \ - | AIOP_INTR_BIT_3) - -#define UPCI_AIOP_INTR_BIT_0 0x0004 -#define UPCI_AIOP_INTR_BIT_1 0x0020 -#define UPCI_AIOP_INTR_BIT_2 0x0100 -#define UPCI_AIOP_INTR_BIT_3 0x0800 - -#define UPCI_AIOP_INTR_BITS ( \ - UPCI_AIOP_INTR_BIT_0 \ - | UPCI_AIOP_INTR_BIT_1 \ - | UPCI_AIOP_INTR_BIT_2 \ - | UPCI_AIOP_INTR_BIT_3) - -/* Controller level information structure */ -typedef struct { - int CtlID; - int CtlNum; - int BusType; - int boardType; - int isUPCI; - WordIO_t PCIIO; - WordIO_t PCIIO2; - ByteIO_t MBaseIO; - ByteIO_t MReg1IO; - ByteIO_t MReg2IO; - ByteIO_t MReg3IO; - Byte_t MReg2; - Byte_t MReg3; - int NumAiop; - int AltChanRingIndicator; - ByteIO_t UPCIRingInd; - WordIO_t AiopIO[AIOP_CTL_SIZE]; - ByteIO_t AiopIntChanIO[AIOP_CTL_SIZE]; - int AiopID[AIOP_CTL_SIZE]; - int AiopNumChan[AIOP_CTL_SIZE]; - Word_t *AiopIntrBits; -} CONTROLLER_T; - -typedef CONTROLLER_T CONTROLLER_t; - -/* Channel level information structure */ -typedef struct { - CONTROLLER_T *CtlP; - int AiopNum; - int ChanID; - int ChanNum; - int rtsToggle; - - ByteIO_t Cmd; - ByteIO_t IntChan; - ByteIO_t IntMask; - DWordIO_t IndexAddr; - WordIO_t IndexData; - - WordIO_t TxRxData; - WordIO_t ChanStat; - WordIO_t TxRxCount; - ByteIO_t IntID; - - Word_t TxFIFO; - Word_t TxFIFOPtrs; - Word_t RxFIFO; - Word_t RxFIFOPtrs; - Word_t TxPrioCnt; - Word_t TxPrioPtr; - Word_t TxPrioBuf; - - Byte_t R[RREGDATASIZE]; - - Byte_t BaudDiv[4]; - Byte_t TxControl[4]; - Byte_t RxControl[4]; - Byte_t TxEnables[4]; - Byte_t TxCompare[4]; - Byte_t TxReplace1[4]; - Byte_t TxReplace2[4]; -} CHANNEL_T; - -typedef CHANNEL_T CHANNEL_t; -typedef CHANNEL_T *CHANPTR_T; - -#define InterfaceModeRS232 0x00 -#define InterfaceModeRS422 0x08 -#define InterfaceModeRS485 0x10 -#define InterfaceModeRS232T 0x18 - -/*************************************************************************** -Function: sClrBreak -Purpose: Stop sending a transmit BREAK signal -Call: sClrBreak(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sClrBreak(ChP) \ -do { \ - (ChP)->TxControl[3] &= ~SETBREAK; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sClrDTR -Purpose: Clr the DTR output -Call: sClrDTR(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sClrDTR(ChP) \ -do { \ - (ChP)->TxControl[3] &= ~SET_DTR; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sClrRTS -Purpose: Clr the RTS output -Call: sClrRTS(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sClrRTS(ChP) \ -do { \ - if ((ChP)->rtsToggle) break; \ - (ChP)->TxControl[3] &= ~SET_RTS; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sClrTxXOFF -Purpose: Clear any existing transmit software flow control off condition -Call: sClrTxXOFF(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sClrTxXOFF(ChP) \ -do { \ - sOutB((ChP)->Cmd,TXOVERIDE | (Byte_t)(ChP)->ChanNum); \ - sOutB((ChP)->Cmd,(Byte_t)(ChP)->ChanNum); \ -} while (0) - -/*************************************************************************** -Function: sCtlNumToCtlPtr -Purpose: Convert a controller number to controller structure pointer -Call: sCtlNumToCtlPtr(CtlNum) - int CtlNum; Controller number -Return: CONTROLLER_T *: Ptr to controller structure -*/ -#define sCtlNumToCtlPtr(CTLNUM) &sController[CTLNUM] - -/*************************************************************************** -Function: sControllerEOI -Purpose: Strobe the MUDBAC's End Of Interrupt bit. -Call: sControllerEOI(CtlP) - CONTROLLER_T *CtlP; Ptr to controller structure -*/ -#define sControllerEOI(CTLP) sOutB((CTLP)->MReg2IO,(CTLP)->MReg2 | INT_STROB) - -/*************************************************************************** -Function: sPCIControllerEOI -Purpose: Strobe the PCI End Of Interrupt bit. - For the UPCI boards, toggle the AIOP interrupt enable bit - (this was taken from the Windows driver). -Call: sPCIControllerEOI(CtlP) - CONTROLLER_T *CtlP; Ptr to controller structure -*/ -#define sPCIControllerEOI(CTLP) \ -do { \ - if ((CTLP)->isUPCI) { \ - Word_t w = sInW((CTLP)->PCIIO); \ - sOutW((CTLP)->PCIIO, (w ^ PCI_INT_CTRL_AIOP)); \ - sOutW((CTLP)->PCIIO, w); \ - } \ - else { \ - sOutW((CTLP)->PCIIO, PCI_STROB); \ - } \ -} while (0) - -/*************************************************************************** -Function: sDisAiop -Purpose: Disable I/O access to an AIOP -Call: sDisAiop(CltP) - CONTROLLER_T *CtlP; Ptr to controller structure - int AiopNum; Number of AIOP on controller -*/ -#define sDisAiop(CTLP,AIOPNUM) \ -do { \ - (CTLP)->MReg3 &= sBitMapClrTbl[AIOPNUM]; \ - sOutB((CTLP)->MReg3IO,(CTLP)->MReg3); \ -} while (0) - -/*************************************************************************** -Function: sDisCTSFlowCtl -Purpose: Disable output flow control using CTS -Call: sDisCTSFlowCtl(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sDisCTSFlowCtl(ChP) \ -do { \ - (ChP)->TxControl[2] &= ~CTSFC_EN; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sDisIXANY -Purpose: Disable IXANY Software Flow Control -Call: sDisIXANY(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sDisIXANY(ChP) \ -do { \ - (ChP)->R[0x0e] = 0x86; \ - out32((ChP)->IndexAddr,&(ChP)->R[0x0c]); \ -} while (0) - -/*************************************************************************** -Function: DisParity -Purpose: Disable parity -Call: sDisParity(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: Function sSetParity() can be used in place of functions sEnParity(), - sDisParity(), sSetOddParity(), and sSetEvenParity(). -*/ -#define sDisParity(ChP) \ -do { \ - (ChP)->TxControl[2] &= ~PARITY_EN; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sDisRTSToggle -Purpose: Disable RTS toggle -Call: sDisRTSToggle(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sDisRTSToggle(ChP) \ -do { \ - (ChP)->TxControl[2] &= ~RTSTOG_EN; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ - (ChP)->rtsToggle = 0; \ -} while (0) - -/*************************************************************************** -Function: sDisRxFIFO -Purpose: Disable Rx FIFO -Call: sDisRxFIFO(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sDisRxFIFO(ChP) \ -do { \ - (ChP)->R[0x32] = 0x0a; \ - out32((ChP)->IndexAddr,&(ChP)->R[0x30]); \ -} while (0) - -/*************************************************************************** -Function: sDisRxStatusMode -Purpose: Disable the Rx status mode -Call: sDisRxStatusMode(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: This takes the channel out of the receive status mode. All - subsequent reads of receive data using sReadRxWord() will return - two data bytes. -*/ -#define sDisRxStatusMode(ChP) sOutW((ChP)->ChanStat,0) - -/*************************************************************************** -Function: sDisTransmit -Purpose: Disable transmit -Call: sDisTransmit(ChP) - CHANNEL_T *ChP; Ptr to channel structure - This disables movement of Tx data from the Tx FIFO into the 1 byte - Tx buffer. Therefore there could be up to a 2 byte latency - between the time sDisTransmit() is called and the transmit buffer - and transmit shift register going completely empty. -*/ -#define sDisTransmit(ChP) \ -do { \ - (ChP)->TxControl[3] &= ~TX_ENABLE; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sDisTxSoftFlowCtl -Purpose: Disable Tx Software Flow Control -Call: sDisTxSoftFlowCtl(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sDisTxSoftFlowCtl(ChP) \ -do { \ - (ChP)->R[0x06] = 0x8a; \ - out32((ChP)->IndexAddr,&(ChP)->R[0x04]); \ -} while (0) - -/*************************************************************************** -Function: sEnAiop -Purpose: Enable I/O access to an AIOP -Call: sEnAiop(CltP) - CONTROLLER_T *CtlP; Ptr to controller structure - int AiopNum; Number of AIOP on controller -*/ -#define sEnAiop(CTLP,AIOPNUM) \ -do { \ - (CTLP)->MReg3 |= sBitMapSetTbl[AIOPNUM]; \ - sOutB((CTLP)->MReg3IO,(CTLP)->MReg3); \ -} while (0) - -/*************************************************************************** -Function: sEnCTSFlowCtl -Purpose: Enable output flow control using CTS -Call: sEnCTSFlowCtl(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sEnCTSFlowCtl(ChP) \ -do { \ - (ChP)->TxControl[2] |= CTSFC_EN; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sEnIXANY -Purpose: Enable IXANY Software Flow Control -Call: sEnIXANY(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sEnIXANY(ChP) \ -do { \ - (ChP)->R[0x0e] = 0x21; \ - out32((ChP)->IndexAddr,&(ChP)->R[0x0c]); \ -} while (0) - -/*************************************************************************** -Function: EnParity -Purpose: Enable parity -Call: sEnParity(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: Function sSetParity() can be used in place of functions sEnParity(), - sDisParity(), sSetOddParity(), and sSetEvenParity(). - -Warnings: Before enabling parity odd or even parity should be chosen using - functions sSetOddParity() or sSetEvenParity(). -*/ -#define sEnParity(ChP) \ -do { \ - (ChP)->TxControl[2] |= PARITY_EN; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sEnRTSToggle -Purpose: Enable RTS toggle -Call: sEnRTSToggle(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: This function will disable RTS flow control and clear the RTS - line to allow operation of RTS toggle. -*/ -#define sEnRTSToggle(ChP) \ -do { \ - (ChP)->RxControl[2] &= ~RTSFC_EN; \ - out32((ChP)->IndexAddr,(ChP)->RxControl); \ - (ChP)->TxControl[2] |= RTSTOG_EN; \ - (ChP)->TxControl[3] &= ~SET_RTS; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ - (ChP)->rtsToggle = 1; \ -} while (0) - -/*************************************************************************** -Function: sEnRxFIFO -Purpose: Enable Rx FIFO -Call: sEnRxFIFO(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sEnRxFIFO(ChP) \ -do { \ - (ChP)->R[0x32] = 0x08; \ - out32((ChP)->IndexAddr,&(ChP)->R[0x30]); \ -} while (0) - -/*************************************************************************** -Function: sEnRxProcessor -Purpose: Enable the receive processor -Call: sEnRxProcessor(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: This function is used to start the receive processor. When - the channel is in the reset state the receive processor is not - running. This is done to prevent the receive processor from - executing invalid microcode instructions prior to the - downloading of the microcode. - -Warnings: This function must be called after valid microcode has been - downloaded to the AIOP, and it must not be called before the - microcode has been downloaded. -*/ -#define sEnRxProcessor(ChP) \ -do { \ - (ChP)->RxControl[2] |= RXPROC_EN; \ - out32((ChP)->IndexAddr,(ChP)->RxControl); \ -} while (0) - -/*************************************************************************** -Function: sEnRxStatusMode -Purpose: Enable the Rx status mode -Call: sEnRxStatusMode(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: This places the channel in the receive status mode. All subsequent - reads of receive data using sReadRxWord() will return a data byte - in the low word and a status byte in the high word. - -*/ -#define sEnRxStatusMode(ChP) sOutW((ChP)->ChanStat,STATMODE) - -/*************************************************************************** -Function: sEnTransmit -Purpose: Enable transmit -Call: sEnTransmit(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sEnTransmit(ChP) \ -do { \ - (ChP)->TxControl[3] |= TX_ENABLE; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sEnTxSoftFlowCtl -Purpose: Enable Tx Software Flow Control -Call: sEnTxSoftFlowCtl(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sEnTxSoftFlowCtl(ChP) \ -do { \ - (ChP)->R[0x06] = 0xc5; \ - out32((ChP)->IndexAddr,&(ChP)->R[0x04]); \ -} while (0) - -/*************************************************************************** -Function: sGetAiopIntStatus -Purpose: Get the AIOP interrupt status -Call: sGetAiopIntStatus(CtlP,AiopNum) - CONTROLLER_T *CtlP; Ptr to controller structure - int AiopNum; AIOP number -Return: Byte_t: The AIOP interrupt status. Bits 0 through 7 - represent channels 0 through 7 respectively. If a - bit is set that channel is interrupting. -*/ -#define sGetAiopIntStatus(CTLP,AIOPNUM) sInB((CTLP)->AiopIntChanIO[AIOPNUM]) - -/*************************************************************************** -Function: sGetAiopNumChan -Purpose: Get the number of channels supported by an AIOP -Call: sGetAiopNumChan(CtlP,AiopNum) - CONTROLLER_T *CtlP; Ptr to controller structure - int AiopNum; AIOP number -Return: int: The number of channels supported by the AIOP -*/ -#define sGetAiopNumChan(CTLP,AIOPNUM) (CTLP)->AiopNumChan[AIOPNUM] - -/*************************************************************************** -Function: sGetChanIntID -Purpose: Get a channel's interrupt identification byte -Call: sGetChanIntID(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: Byte_t: The channel interrupt ID. Can be any - combination of the following flags: - RXF_TRIG: Rx FIFO trigger level interrupt - TXFIFO_MT: Tx FIFO empty interrupt - SRC_INT: Special receive condition interrupt - DELTA_CD: CD change interrupt - DELTA_CTS: CTS change interrupt - DELTA_DSR: DSR change interrupt -*/ -#define sGetChanIntID(ChP) (sInB((ChP)->IntID) & (RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR)) - -/*************************************************************************** -Function: sGetChanNum -Purpose: Get the number of a channel within an AIOP -Call: sGetChanNum(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: int: Channel number within AIOP, or NULLCHAN if channel does - not exist. -*/ -#define sGetChanNum(ChP) (ChP)->ChanNum - -/*************************************************************************** -Function: sGetChanStatus -Purpose: Get the channel status -Call: sGetChanStatus(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: Word_t: The channel status. Can be any combination of - the following flags: - LOW BYTE FLAGS - CTS_ACT: CTS input asserted - DSR_ACT: DSR input asserted - CD_ACT: CD input asserted - TXFIFOMT: Tx FIFO is empty - TXSHRMT: Tx shift register is empty - RDA: Rx data available - - HIGH BYTE FLAGS - STATMODE: status mode enable bit - RXFOVERFL: receive FIFO overflow - RX2MATCH: receive compare byte 2 match - RX1MATCH: receive compare byte 1 match - RXBREAK: received BREAK - RXFRAME: received framing error - RXPARITY: received parity error -Warnings: This function will clear the high byte flags in the Channel - Status Register. -*/ -#define sGetChanStatus(ChP) sInW((ChP)->ChanStat) - -/*************************************************************************** -Function: sGetChanStatusLo -Purpose: Get the low byte only of the channel status -Call: sGetChanStatusLo(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: Byte_t: The channel status low byte. Can be any combination - of the following flags: - CTS_ACT: CTS input asserted - DSR_ACT: DSR input asserted - CD_ACT: CD input asserted - TXFIFOMT: Tx FIFO is empty - TXSHRMT: Tx shift register is empty - RDA: Rx data available -*/ -#define sGetChanStatusLo(ChP) sInB((ByteIO_t)(ChP)->ChanStat) - -/********************************************************************** - * Get RI status of channel - * Defined as a function in rocket.c -aes - */ -#if 0 -#define sGetChanRI(ChP) ((ChP)->CtlP->AltChanRingIndicator ? \ - (sInB((ByteIO_t)((ChP)->ChanStat+8)) & DSR_ACT) : \ - (((ChP)->CtlP->boardType == ROCKET_TYPE_PC104) ? \ - (!(sInB((ChP)->CtlP->AiopIO[3]) & sBitMapSetTbl[(ChP)->ChanNum])) : \ - 0)) -#endif - -/*************************************************************************** -Function: sGetControllerIntStatus -Purpose: Get the controller interrupt status -Call: sGetControllerIntStatus(CtlP) - CONTROLLER_T *CtlP; Ptr to controller structure -Return: Byte_t: The controller interrupt status in the lower 4 - bits. Bits 0 through 3 represent AIOP's 0 - through 3 respectively. If a bit is set that - AIOP is interrupting. Bits 4 through 7 will - always be cleared. -*/ -#define sGetControllerIntStatus(CTLP) (sInB((CTLP)->MReg1IO) & 0x0f) - -/*************************************************************************** -Function: sPCIGetControllerIntStatus -Purpose: Get the controller interrupt status -Call: sPCIGetControllerIntStatus(CtlP) - CONTROLLER_T *CtlP; Ptr to controller structure -Return: unsigned char: The controller interrupt status in the lower 4 - bits and bit 4. Bits 0 through 3 represent AIOP's 0 - through 3 respectively. Bit 4 is set if the int - was generated from periodic. If a bit is set the - AIOP is interrupting. -*/ -#define sPCIGetControllerIntStatus(CTLP) \ - ((CTLP)->isUPCI ? \ - (sInW((CTLP)->PCIIO2) & UPCI_AIOP_INTR_BITS) : \ - ((sInW((CTLP)->PCIIO) >> 8) & AIOP_INTR_BITS)) - -/*************************************************************************** - -Function: sGetRxCnt -Purpose: Get the number of data bytes in the Rx FIFO -Call: sGetRxCnt(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: int: The number of data bytes in the Rx FIFO. -Comments: Byte read of count register is required to obtain Rx count. - -*/ -#define sGetRxCnt(ChP) sInW((ChP)->TxRxCount) - -/*************************************************************************** -Function: sGetTxCnt -Purpose: Get the number of data bytes in the Tx FIFO -Call: sGetTxCnt(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: Byte_t: The number of data bytes in the Tx FIFO. -Comments: Byte read of count register is required to obtain Tx count. - -*/ -#define sGetTxCnt(ChP) sInB((ByteIO_t)(ChP)->TxRxCount) - -/***************************************************************************** -Function: sGetTxRxDataIO -Purpose: Get the I/O address of a channel's TxRx Data register -Call: sGetTxRxDataIO(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Return: WordIO_t: I/O address of a channel's TxRx Data register -*/ -#define sGetTxRxDataIO(ChP) (ChP)->TxRxData - -/*************************************************************************** -Function: sInitChanDefaults -Purpose: Initialize a channel structure to it's default state. -Call: sInitChanDefaults(ChP) - CHANNEL_T *ChP; Ptr to the channel structure -Comments: This function must be called once for every channel structure - that exists before any other SSCI calls can be made. - -*/ -#define sInitChanDefaults(ChP) \ -do { \ - (ChP)->CtlP = NULLCTLPTR; \ - (ChP)->AiopNum = NULLAIOP; \ - (ChP)->ChanID = AIOPID_NULL; \ - (ChP)->ChanNum = NULLCHAN; \ -} while (0) - -/*************************************************************************** -Function: sResetAiopByNum -Purpose: Reset the AIOP by number -Call: sResetAiopByNum(CTLP,AIOPNUM) - CONTROLLER_T CTLP; Ptr to controller structure - AIOPNUM; AIOP index -*/ -#define sResetAiopByNum(CTLP,AIOPNUM) \ -do { \ - sOutB((CTLP)->AiopIO[(AIOPNUM)]+_CMD_REG,RESET_ALL); \ - sOutB((CTLP)->AiopIO[(AIOPNUM)]+_CMD_REG,0x0); \ -} while (0) - -/*************************************************************************** -Function: sSendBreak -Purpose: Send a transmit BREAK signal -Call: sSendBreak(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sSendBreak(ChP) \ -do { \ - (ChP)->TxControl[3] |= SETBREAK; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetBaud -Purpose: Set baud rate -Call: sSetBaud(ChP,Divisor) - CHANNEL_T *ChP; Ptr to channel structure - Word_t Divisor; 16 bit baud rate divisor for channel -*/ -#define sSetBaud(ChP,DIVISOR) \ -do { \ - (ChP)->BaudDiv[2] = (Byte_t)(DIVISOR); \ - (ChP)->BaudDiv[3] = (Byte_t)((DIVISOR) >> 8); \ - out32((ChP)->IndexAddr,(ChP)->BaudDiv); \ -} while (0) - -/*************************************************************************** -Function: sSetData7 -Purpose: Set data bits to 7 -Call: sSetData7(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sSetData7(ChP) \ -do { \ - (ChP)->TxControl[2] &= ~DATA8BIT; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetData8 -Purpose: Set data bits to 8 -Call: sSetData8(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sSetData8(ChP) \ -do { \ - (ChP)->TxControl[2] |= DATA8BIT; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetDTR -Purpose: Set the DTR output -Call: sSetDTR(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sSetDTR(ChP) \ -do { \ - (ChP)->TxControl[3] |= SET_DTR; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetEvenParity -Purpose: Set even parity -Call: sSetEvenParity(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: Function sSetParity() can be used in place of functions sEnParity(), - sDisParity(), sSetOddParity(), and sSetEvenParity(). - -Warnings: This function has no effect unless parity is enabled with function - sEnParity(). -*/ -#define sSetEvenParity(ChP) \ -do { \ - (ChP)->TxControl[2] |= EVEN_PAR; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetOddParity -Purpose: Set odd parity -Call: sSetOddParity(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: Function sSetParity() can be used in place of functions sEnParity(), - sDisParity(), sSetOddParity(), and sSetEvenParity(). - -Warnings: This function has no effect unless parity is enabled with function - sEnParity(). -*/ -#define sSetOddParity(ChP) \ -do { \ - (ChP)->TxControl[2] &= ~EVEN_PAR; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetRTS -Purpose: Set the RTS output -Call: sSetRTS(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sSetRTS(ChP) \ -do { \ - if ((ChP)->rtsToggle) break; \ - (ChP)->TxControl[3] |= SET_RTS; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetRxTrigger -Purpose: Set the Rx FIFO trigger level -Call: sSetRxProcessor(ChP,Level) - CHANNEL_T *ChP; Ptr to channel structure - Byte_t Level; Number of characters in Rx FIFO at which the - interrupt will be generated. Can be any of the following flags: - - TRIG_NO: no trigger - TRIG_1: 1 character in FIFO - TRIG_1_2: FIFO 1/2 full - TRIG_7_8: FIFO 7/8 full -Comments: An interrupt will be generated when the trigger level is reached - only if function sEnInterrupt() has been called with flag - RXINT_EN set. The RXF_TRIG flag in the Interrupt Idenfification - register will be set whenever the trigger level is reached - regardless of the setting of RXINT_EN. - -*/ -#define sSetRxTrigger(ChP,LEVEL) \ -do { \ - (ChP)->RxControl[2] &= ~TRIG_MASK; \ - (ChP)->RxControl[2] |= LEVEL; \ - out32((ChP)->IndexAddr,(ChP)->RxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetStop1 -Purpose: Set stop bits to 1 -Call: sSetStop1(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sSetStop1(ChP) \ -do { \ - (ChP)->TxControl[2] &= ~STOP2; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetStop2 -Purpose: Set stop bits to 2 -Call: sSetStop2(ChP) - CHANNEL_T *ChP; Ptr to channel structure -*/ -#define sSetStop2(ChP) \ -do { \ - (ChP)->TxControl[2] |= STOP2; \ - out32((ChP)->IndexAddr,(ChP)->TxControl); \ -} while (0) - -/*************************************************************************** -Function: sSetTxXOFFChar -Purpose: Set the Tx XOFF flow control character -Call: sSetTxXOFFChar(ChP,Ch) - CHANNEL_T *ChP; Ptr to channel structure - Byte_t Ch; The value to set the Tx XOFF character to -*/ -#define sSetTxXOFFChar(ChP,CH) \ -do { \ - (ChP)->R[0x07] = (CH); \ - out32((ChP)->IndexAddr,&(ChP)->R[0x04]); \ -} while (0) - -/*************************************************************************** -Function: sSetTxXONChar -Purpose: Set the Tx XON flow control character -Call: sSetTxXONChar(ChP,Ch) - CHANNEL_T *ChP; Ptr to channel structure - Byte_t Ch; The value to set the Tx XON character to -*/ -#define sSetTxXONChar(ChP,CH) \ -do { \ - (ChP)->R[0x0b] = (CH); \ - out32((ChP)->IndexAddr,&(ChP)->R[0x08]); \ -} while (0) - -/*************************************************************************** -Function: sStartRxProcessor -Purpose: Start a channel's receive processor -Call: sStartRxProcessor(ChP) - CHANNEL_T *ChP; Ptr to channel structure -Comments: This function is used to start a Rx processor after it was - stopped with sStopRxProcessor() or sStopSWInFlowCtl(). It - will restart both the Rx processor and software input flow control. - -*/ -#define sStartRxProcessor(ChP) out32((ChP)->IndexAddr,&(ChP)->R[0]) - -/*************************************************************************** -Function: sWriteTxByte -Purpose: Write a transmit data byte to a channel. - ByteIO_t io: Channel transmit register I/O address. This can - be obtained with sGetTxRxDataIO(). - Byte_t Data; The transmit data byte. -Warnings: This function writes the data byte without checking to see if - sMaxTxSize is exceeded in the Tx FIFO. -*/ -#define sWriteTxByte(IO,DATA) sOutB(IO,DATA) - -/* - * Begin Linux specific definitions for the Rocketport driver - * - * This code is Copyright Theodore Ts'o, 1995-1997 - */ - -struct r_port { - int magic; - struct tty_port port; - int line; - int flags; /* Don't yet match the ASY_ flags!! */ - unsigned int board:3; - unsigned int aiop:2; - unsigned int chan:3; - CONTROLLER_t *ctlp; - CHANNEL_t channel; - int intmask; - int xmit_fifo_room; /* room in xmit fifo */ - unsigned char *xmit_buf; - int xmit_head; - int xmit_tail; - int xmit_cnt; - int cd_status; - int ignore_status_mask; - int read_status_mask; - int cps; - - struct completion close_wait; /* Not yet matching the core */ - spinlock_t slock; - struct mutex write_mtx; -}; - -#define RPORT_MAGIC 0x525001 - -#define NUM_BOARDS 8 -#define MAX_RP_PORTS (32*NUM_BOARDS) - -/* - * The size of the xmit buffer is 1 page, or 4096 bytes - */ -#define XMIT_BUF_SIZE 4096 - -/* number of characters left in xmit buffer before we ask for more */ -#define WAKEUP_CHARS 256 - -/* - * Assigned major numbers for the Comtrol Rocketport - */ -#define TTY_ROCKET_MAJOR 46 -#define CUA_ROCKET_MAJOR 47 - -#ifdef PCI_VENDOR_ID_RP -#undef PCI_VENDOR_ID_RP -#undef PCI_DEVICE_ID_RP8OCTA -#undef PCI_DEVICE_ID_RP8INTF -#undef PCI_DEVICE_ID_RP16INTF -#undef PCI_DEVICE_ID_RP32INTF -#undef PCI_DEVICE_ID_URP8OCTA -#undef PCI_DEVICE_ID_URP8INTF -#undef PCI_DEVICE_ID_URP16INTF -#undef PCI_DEVICE_ID_CRP16INTF -#undef PCI_DEVICE_ID_URP32INTF -#endif - -/* Comtrol PCI Vendor ID */ -#define PCI_VENDOR_ID_RP 0x11fe - -/* Comtrol Device ID's */ -#define PCI_DEVICE_ID_RP32INTF 0x0001 /* Rocketport 32 port w/external I/F */ -#define PCI_DEVICE_ID_RP8INTF 0x0002 /* Rocketport 8 port w/external I/F */ -#define PCI_DEVICE_ID_RP16INTF 0x0003 /* Rocketport 16 port w/external I/F */ -#define PCI_DEVICE_ID_RP4QUAD 0x0004 /* Rocketport 4 port w/quad cable */ -#define PCI_DEVICE_ID_RP8OCTA 0x0005 /* Rocketport 8 port w/octa cable */ -#define PCI_DEVICE_ID_RP8J 0x0006 /* Rocketport 8 port w/RJ11 connectors */ -#define PCI_DEVICE_ID_RP4J 0x0007 /* Rocketport 4 port w/RJ11 connectors */ -#define PCI_DEVICE_ID_RP8SNI 0x0008 /* Rocketport 8 port w/ DB78 SNI (Siemens) connector */ -#define PCI_DEVICE_ID_RP16SNI 0x0009 /* Rocketport 16 port w/ DB78 SNI (Siemens) connector */ -#define PCI_DEVICE_ID_RPP4 0x000A /* Rocketport Plus 4 port */ -#define PCI_DEVICE_ID_RPP8 0x000B /* Rocketport Plus 8 port */ -#define PCI_DEVICE_ID_RP6M 0x000C /* RocketModem 6 port */ -#define PCI_DEVICE_ID_RP4M 0x000D /* RocketModem 4 port */ -#define PCI_DEVICE_ID_RP2_232 0x000E /* Rocketport Plus 2 port RS232 */ -#define PCI_DEVICE_ID_RP2_422 0x000F /* Rocketport Plus 2 port RS422 */ - -/* Universal PCI boards */ -#define PCI_DEVICE_ID_URP32INTF 0x0801 /* Rocketport UPCI 32 port w/external I/F */ -#define PCI_DEVICE_ID_URP8INTF 0x0802 /* Rocketport UPCI 8 port w/external I/F */ -#define PCI_DEVICE_ID_URP16INTF 0x0803 /* Rocketport UPCI 16 port w/external I/F */ -#define PCI_DEVICE_ID_URP8OCTA 0x0805 /* Rocketport UPCI 8 port w/octa cable */ -#define PCI_DEVICE_ID_UPCI_RM3_8PORT 0x080C /* Rocketmodem III 8 port */ -#define PCI_DEVICE_ID_UPCI_RM3_4PORT 0x080D /* Rocketmodem III 4 port */ - -/* Compact PCI device */ -#define PCI_DEVICE_ID_CRP16INTF 0x0903 /* Rocketport Compact PCI 16 port w/external I/F */ - diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c deleted file mode 100644 index 18888d005a0a..000000000000 --- a/drivers/char/synclink.c +++ /dev/null @@ -1,8119 +0,0 @@ -/* - * linux/drivers/char/synclink.c - * - * $Id: synclink.c,v 4.38 2005/11/07 16:30:34 paulkf Exp $ - * - * Device driver for Microgate SyncLink ISA and PCI - * high speed multiprotocol serial adapters. - * - * written by Paul Fulghum for Microgate Corporation - * paulkf@microgate.com - * - * Microgate and SyncLink are trademarks of Microgate Corporation - * - * Derived from serial.c written by Theodore Ts'o and Linus Torvalds - * - * Original release 01/11/99 - * - * This code is released under the GNU General Public License (GPL) - * - * This driver is primarily intended for use in synchronous - * HDLC mode. Asynchronous mode is also provided. - * - * When operating in synchronous mode, each call to mgsl_write() - * contains exactly one complete HDLC frame. Calling mgsl_put_char - * will start assembling an HDLC frame that will not be sent until - * mgsl_flush_chars or mgsl_write is called. - * - * Synchronous receive data is reported as complete frames. To accomplish - * this, the TTY flip buffer is bypassed (too small to hold largest - * frame and may fragment frames) and the line discipline - * receive entry point is called directly. - * - * This driver has been tested with a slightly modified ppp.c driver - * for synchronous PPP. - * - * 2000/02/16 - * Added interface for syncppp.c driver (an alternate synchronous PPP - * implementation that also supports Cisco HDLC). Each device instance - * registers as a tty device AND a network device (if dosyncppp option - * is set for the device). The functionality is determined by which - * device interface is opened. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#if defined(__i386__) -# define BREAKPOINT() asm(" int $3"); -#else -# define BREAKPOINT() { } -#endif - -#define MAX_ISA_DEVICES 10 -#define MAX_PCI_DEVICES 10 -#define MAX_TOTAL_DEVICES 20 - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_MODULE)) -#define SYNCLINK_GENERIC_HDLC 1 -#else -#define SYNCLINK_GENERIC_HDLC 0 -#endif - -#define GET_USER(error,value,addr) error = get_user(value,addr) -#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0 -#define PUT_USER(error,value,addr) error = put_user(value,addr) -#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0 - -#include - -#define RCLRVALUE 0xffff - -static MGSL_PARAMS default_params = { - MGSL_MODE_HDLC, /* unsigned long mode */ - 0, /* unsigned char loopback; */ - HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */ - HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */ - 0, /* unsigned long clock_speed; */ - 0xff, /* unsigned char addr_filter; */ - HDLC_CRC_16_CCITT, /* unsigned short crc_type; */ - HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */ - HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */ - 9600, /* unsigned long data_rate; */ - 8, /* unsigned char data_bits; */ - 1, /* unsigned char stop_bits; */ - ASYNC_PARITY_NONE /* unsigned char parity; */ -}; - -#define SHARED_MEM_ADDRESS_SIZE 0x40000 -#define BUFFERLISTSIZE 4096 -#define DMABUFFERSIZE 4096 -#define MAXRXFRAMES 7 - -typedef struct _DMABUFFERENTRY -{ - u32 phys_addr; /* 32-bit flat physical address of data buffer */ - volatile u16 count; /* buffer size/data count */ - volatile u16 status; /* Control/status field */ - volatile u16 rcc; /* character count field */ - u16 reserved; /* padding required by 16C32 */ - u32 link; /* 32-bit flat link to next buffer entry */ - char *virt_addr; /* virtual address of data buffer */ - u32 phys_entry; /* physical address of this buffer entry */ - dma_addr_t dma_addr; -} DMABUFFERENTRY, *DMAPBUFFERENTRY; - -/* The queue of BH actions to be performed */ - -#define BH_RECEIVE 1 -#define BH_TRANSMIT 2 -#define BH_STATUS 4 - -#define IO_PIN_SHUTDOWN_LIMIT 100 - -struct _input_signal_events { - int ri_up; - int ri_down; - int dsr_up; - int dsr_down; - int dcd_up; - int dcd_down; - int cts_up; - int cts_down; -}; - -/* transmit holding buffer definitions*/ -#define MAX_TX_HOLDING_BUFFERS 5 -struct tx_holding_buffer { - int buffer_size; - unsigned char * buffer; -}; - - -/* - * Device instance data structure - */ - -struct mgsl_struct { - int magic; - struct tty_port port; - int line; - int hw_version; - - struct mgsl_icount icount; - - int timeout; - int x_char; /* xon/xoff character */ - u16 read_status_mask; - u16 ignore_status_mask; - unsigned char *xmit_buf; - int xmit_head; - int xmit_tail; - int xmit_cnt; - - wait_queue_head_t status_event_wait_q; - wait_queue_head_t event_wait_q; - struct timer_list tx_timer; /* HDLC transmit timeout timer */ - struct mgsl_struct *next_device; /* device list link */ - - spinlock_t irq_spinlock; /* spinlock for synchronizing with ISR */ - struct work_struct task; /* task structure for scheduling bh */ - - u32 EventMask; /* event trigger mask */ - u32 RecordedEvents; /* pending events */ - - u32 max_frame_size; /* as set by device config */ - - u32 pending_bh; - - bool bh_running; /* Protection from multiple */ - int isr_overflow; - bool bh_requested; - - int dcd_chkcount; /* check counts to prevent */ - int cts_chkcount; /* too many IRQs if a signal */ - int dsr_chkcount; /* is floating */ - int ri_chkcount; - - char *buffer_list; /* virtual address of Rx & Tx buffer lists */ - u32 buffer_list_phys; - dma_addr_t buffer_list_dma_addr; - - unsigned int rx_buffer_count; /* count of total allocated Rx buffers */ - DMABUFFERENTRY *rx_buffer_list; /* list of receive buffer entries */ - unsigned int current_rx_buffer; - - int num_tx_dma_buffers; /* number of tx dma frames required */ - int tx_dma_buffers_used; - unsigned int tx_buffer_count; /* count of total allocated Tx buffers */ - DMABUFFERENTRY *tx_buffer_list; /* list of transmit buffer entries */ - int start_tx_dma_buffer; /* tx dma buffer to start tx dma operation */ - int current_tx_buffer; /* next tx dma buffer to be loaded */ - - unsigned char *intermediate_rxbuffer; - - int num_tx_holding_buffers; /* number of tx holding buffer allocated */ - int get_tx_holding_index; /* next tx holding buffer for adapter to load */ - int put_tx_holding_index; /* next tx holding buffer to store user request */ - int tx_holding_count; /* number of tx holding buffers waiting */ - struct tx_holding_buffer tx_holding_buffers[MAX_TX_HOLDING_BUFFERS]; - - bool rx_enabled; - bool rx_overflow; - bool rx_rcc_underrun; - - bool tx_enabled; - bool tx_active; - u32 idle_mode; - - u16 cmr_value; - u16 tcsr_value; - - char device_name[25]; /* device instance name */ - - unsigned int bus_type; /* expansion bus type (ISA,EISA,PCI) */ - unsigned char bus; /* expansion bus number (zero based) */ - unsigned char function; /* PCI device number */ - - unsigned int io_base; /* base I/O address of adapter */ - unsigned int io_addr_size; /* size of the I/O address range */ - bool io_addr_requested; /* true if I/O address requested */ - - unsigned int irq_level; /* interrupt level */ - unsigned long irq_flags; - bool irq_requested; /* true if IRQ requested */ - - unsigned int dma_level; /* DMA channel */ - bool dma_requested; /* true if dma channel requested */ - - u16 mbre_bit; - u16 loopback_bits; - u16 usc_idle_mode; - - MGSL_PARAMS params; /* communications parameters */ - - unsigned char serial_signals; /* current serial signal states */ - - bool irq_occurred; /* for diagnostics use */ - unsigned int init_error; /* Initialization startup error (DIAGS) */ - int fDiagnosticsmode; /* Driver in Diagnostic mode? (DIAGS) */ - - u32 last_mem_alloc; - unsigned char* memory_base; /* shared memory address (PCI only) */ - u32 phys_memory_base; - bool shared_mem_requested; - - unsigned char* lcr_base; /* local config registers (PCI only) */ - u32 phys_lcr_base; - u32 lcr_offset; - bool lcr_mem_requested; - - u32 misc_ctrl_value; - char flag_buf[MAX_ASYNC_BUFFER_SIZE]; - char char_buf[MAX_ASYNC_BUFFER_SIZE]; - bool drop_rts_on_tx_done; - - bool loopmode_insert_requested; - bool loopmode_send_done_requested; - - struct _input_signal_events input_signal_events; - - /* generic HDLC device parts */ - int netcount; - spinlock_t netlock; - -#if SYNCLINK_GENERIC_HDLC - struct net_device *netdev; -#endif -}; - -#define MGSL_MAGIC 0x5401 - -/* - * The size of the serial xmit buffer is 1 page, or 4096 bytes - */ -#ifndef SERIAL_XMIT_SIZE -#define SERIAL_XMIT_SIZE 4096 -#endif - -/* - * These macros define the offsets used in calculating the - * I/O address of the specified USC registers. - */ - - -#define DCPIN 2 /* Bit 1 of I/O address */ -#define SDPIN 4 /* Bit 2 of I/O address */ - -#define DCAR 0 /* DMA command/address register */ -#define CCAR SDPIN /* channel command/address register */ -#define DATAREG DCPIN + SDPIN /* serial data register */ -#define MSBONLY 0x41 -#define LSBONLY 0x40 - -/* - * These macros define the register address (ordinal number) - * used for writing address/value pairs to the USC. - */ - -#define CMR 0x02 /* Channel mode Register */ -#define CCSR 0x04 /* Channel Command/status Register */ -#define CCR 0x06 /* Channel Control Register */ -#define PSR 0x08 /* Port status Register */ -#define PCR 0x0a /* Port Control Register */ -#define TMDR 0x0c /* Test mode Data Register */ -#define TMCR 0x0e /* Test mode Control Register */ -#define CMCR 0x10 /* Clock mode Control Register */ -#define HCR 0x12 /* Hardware Configuration Register */ -#define IVR 0x14 /* Interrupt Vector Register */ -#define IOCR 0x16 /* Input/Output Control Register */ -#define ICR 0x18 /* Interrupt Control Register */ -#define DCCR 0x1a /* Daisy Chain Control Register */ -#define MISR 0x1c /* Misc Interrupt status Register */ -#define SICR 0x1e /* status Interrupt Control Register */ -#define RDR 0x20 /* Receive Data Register */ -#define RMR 0x22 /* Receive mode Register */ -#define RCSR 0x24 /* Receive Command/status Register */ -#define RICR 0x26 /* Receive Interrupt Control Register */ -#define RSR 0x28 /* Receive Sync Register */ -#define RCLR 0x2a /* Receive count Limit Register */ -#define RCCR 0x2c /* Receive Character count Register */ -#define TC0R 0x2e /* Time Constant 0 Register */ -#define TDR 0x30 /* Transmit Data Register */ -#define TMR 0x32 /* Transmit mode Register */ -#define TCSR 0x34 /* Transmit Command/status Register */ -#define TICR 0x36 /* Transmit Interrupt Control Register */ -#define TSR 0x38 /* Transmit Sync Register */ -#define TCLR 0x3a /* Transmit count Limit Register */ -#define TCCR 0x3c /* Transmit Character count Register */ -#define TC1R 0x3e /* Time Constant 1 Register */ - - -/* - * MACRO DEFINITIONS FOR DMA REGISTERS - */ - -#define DCR 0x06 /* DMA Control Register (shared) */ -#define DACR 0x08 /* DMA Array count Register (shared) */ -#define BDCR 0x12 /* Burst/Dwell Control Register (shared) */ -#define DIVR 0x14 /* DMA Interrupt Vector Register (shared) */ -#define DICR 0x18 /* DMA Interrupt Control Register (shared) */ -#define CDIR 0x1a /* Clear DMA Interrupt Register (shared) */ -#define SDIR 0x1c /* Set DMA Interrupt Register (shared) */ - -#define TDMR 0x02 /* Transmit DMA mode Register */ -#define TDIAR 0x1e /* Transmit DMA Interrupt Arm Register */ -#define TBCR 0x2a /* Transmit Byte count Register */ -#define TARL 0x2c /* Transmit Address Register (low) */ -#define TARU 0x2e /* Transmit Address Register (high) */ -#define NTBCR 0x3a /* Next Transmit Byte count Register */ -#define NTARL 0x3c /* Next Transmit Address Register (low) */ -#define NTARU 0x3e /* Next Transmit Address Register (high) */ - -#define RDMR 0x82 /* Receive DMA mode Register (non-shared) */ -#define RDIAR 0x9e /* Receive DMA Interrupt Arm Register */ -#define RBCR 0xaa /* Receive Byte count Register */ -#define RARL 0xac /* Receive Address Register (low) */ -#define RARU 0xae /* Receive Address Register (high) */ -#define NRBCR 0xba /* Next Receive Byte count Register */ -#define NRARL 0xbc /* Next Receive Address Register (low) */ -#define NRARU 0xbe /* Next Receive Address Register (high) */ - - -/* - * MACRO DEFINITIONS FOR MODEM STATUS BITS - */ - -#define MODEMSTATUS_DTR 0x80 -#define MODEMSTATUS_DSR 0x40 -#define MODEMSTATUS_RTS 0x20 -#define MODEMSTATUS_CTS 0x10 -#define MODEMSTATUS_RI 0x04 -#define MODEMSTATUS_DCD 0x01 - - -/* - * Channel Command/Address Register (CCAR) Command Codes - */ - -#define RTCmd_Null 0x0000 -#define RTCmd_ResetHighestIus 0x1000 -#define RTCmd_TriggerChannelLoadDma 0x2000 -#define RTCmd_TriggerRxDma 0x2800 -#define RTCmd_TriggerTxDma 0x3000 -#define RTCmd_TriggerRxAndTxDma 0x3800 -#define RTCmd_PurgeRxFifo 0x4800 -#define RTCmd_PurgeTxFifo 0x5000 -#define RTCmd_PurgeRxAndTxFifo 0x5800 -#define RTCmd_LoadRcc 0x6800 -#define RTCmd_LoadTcc 0x7000 -#define RTCmd_LoadRccAndTcc 0x7800 -#define RTCmd_LoadTC0 0x8800 -#define RTCmd_LoadTC1 0x9000 -#define RTCmd_LoadTC0AndTC1 0x9800 -#define RTCmd_SerialDataLSBFirst 0xa000 -#define RTCmd_SerialDataMSBFirst 0xa800 -#define RTCmd_SelectBigEndian 0xb000 -#define RTCmd_SelectLittleEndian 0xb800 - - -/* - * DMA Command/Address Register (DCAR) Command Codes - */ - -#define DmaCmd_Null 0x0000 -#define DmaCmd_ResetTxChannel 0x1000 -#define DmaCmd_ResetRxChannel 0x1200 -#define DmaCmd_StartTxChannel 0x2000 -#define DmaCmd_StartRxChannel 0x2200 -#define DmaCmd_ContinueTxChannel 0x3000 -#define DmaCmd_ContinueRxChannel 0x3200 -#define DmaCmd_PauseTxChannel 0x4000 -#define DmaCmd_PauseRxChannel 0x4200 -#define DmaCmd_AbortTxChannel 0x5000 -#define DmaCmd_AbortRxChannel 0x5200 -#define DmaCmd_InitTxChannel 0x7000 -#define DmaCmd_InitRxChannel 0x7200 -#define DmaCmd_ResetHighestDmaIus 0x8000 -#define DmaCmd_ResetAllChannels 0x9000 -#define DmaCmd_StartAllChannels 0xa000 -#define DmaCmd_ContinueAllChannels 0xb000 -#define DmaCmd_PauseAllChannels 0xc000 -#define DmaCmd_AbortAllChannels 0xd000 -#define DmaCmd_InitAllChannels 0xf000 - -#define TCmd_Null 0x0000 -#define TCmd_ClearTxCRC 0x2000 -#define TCmd_SelectTicrTtsaData 0x4000 -#define TCmd_SelectTicrTxFifostatus 0x5000 -#define TCmd_SelectTicrIntLevel 0x6000 -#define TCmd_SelectTicrdma_level 0x7000 -#define TCmd_SendFrame 0x8000 -#define TCmd_SendAbort 0x9000 -#define TCmd_EnableDleInsertion 0xc000 -#define TCmd_DisableDleInsertion 0xd000 -#define TCmd_ClearEofEom 0xe000 -#define TCmd_SetEofEom 0xf000 - -#define RCmd_Null 0x0000 -#define RCmd_ClearRxCRC 0x2000 -#define RCmd_EnterHuntmode 0x3000 -#define RCmd_SelectRicrRtsaData 0x4000 -#define RCmd_SelectRicrRxFifostatus 0x5000 -#define RCmd_SelectRicrIntLevel 0x6000 -#define RCmd_SelectRicrdma_level 0x7000 - -/* - * Bits for enabling and disabling IRQs in Interrupt Control Register (ICR) - */ - -#define RECEIVE_STATUS BIT5 -#define RECEIVE_DATA BIT4 -#define TRANSMIT_STATUS BIT3 -#define TRANSMIT_DATA BIT2 -#define IO_PIN BIT1 -#define MISC BIT0 - - -/* - * Receive status Bits in Receive Command/status Register RCSR - */ - -#define RXSTATUS_SHORT_FRAME BIT8 -#define RXSTATUS_CODE_VIOLATION BIT8 -#define RXSTATUS_EXITED_HUNT BIT7 -#define RXSTATUS_IDLE_RECEIVED BIT6 -#define RXSTATUS_BREAK_RECEIVED BIT5 -#define RXSTATUS_ABORT_RECEIVED BIT5 -#define RXSTATUS_RXBOUND BIT4 -#define RXSTATUS_CRC_ERROR BIT3 -#define RXSTATUS_FRAMING_ERROR BIT3 -#define RXSTATUS_ABORT BIT2 -#define RXSTATUS_PARITY_ERROR BIT2 -#define RXSTATUS_OVERRUN BIT1 -#define RXSTATUS_DATA_AVAILABLE BIT0 -#define RXSTATUS_ALL 0x01f6 -#define usc_UnlatchRxstatusBits(a,b) usc_OutReg( (a), RCSR, (u16)((b) & RXSTATUS_ALL) ) - -/* - * Values for setting transmit idle mode in - * Transmit Control/status Register (TCSR) - */ -#define IDLEMODE_FLAGS 0x0000 -#define IDLEMODE_ALT_ONE_ZERO 0x0100 -#define IDLEMODE_ZERO 0x0200 -#define IDLEMODE_ONE 0x0300 -#define IDLEMODE_ALT_MARK_SPACE 0x0500 -#define IDLEMODE_SPACE 0x0600 -#define IDLEMODE_MARK 0x0700 -#define IDLEMODE_MASK 0x0700 - -/* - * IUSC revision identifiers - */ -#define IUSC_SL1660 0x4d44 -#define IUSC_PRE_SL1660 0x4553 - -/* - * Transmit status Bits in Transmit Command/status Register (TCSR) - */ - -#define TCSR_PRESERVE 0x0F00 - -#define TCSR_UNDERWAIT BIT11 -#define TXSTATUS_PREAMBLE_SENT BIT7 -#define TXSTATUS_IDLE_SENT BIT6 -#define TXSTATUS_ABORT_SENT BIT5 -#define TXSTATUS_EOF_SENT BIT4 -#define TXSTATUS_EOM_SENT BIT4 -#define TXSTATUS_CRC_SENT BIT3 -#define TXSTATUS_ALL_SENT BIT2 -#define TXSTATUS_UNDERRUN BIT1 -#define TXSTATUS_FIFO_EMPTY BIT0 -#define TXSTATUS_ALL 0x00fa -#define usc_UnlatchTxstatusBits(a,b) usc_OutReg( (a), TCSR, (u16)((a)->tcsr_value + ((b) & 0x00FF)) ) - - -#define MISCSTATUS_RXC_LATCHED BIT15 -#define MISCSTATUS_RXC BIT14 -#define MISCSTATUS_TXC_LATCHED BIT13 -#define MISCSTATUS_TXC BIT12 -#define MISCSTATUS_RI_LATCHED BIT11 -#define MISCSTATUS_RI BIT10 -#define MISCSTATUS_DSR_LATCHED BIT9 -#define MISCSTATUS_DSR BIT8 -#define MISCSTATUS_DCD_LATCHED BIT7 -#define MISCSTATUS_DCD BIT6 -#define MISCSTATUS_CTS_LATCHED BIT5 -#define MISCSTATUS_CTS BIT4 -#define MISCSTATUS_RCC_UNDERRUN BIT3 -#define MISCSTATUS_DPLL_NO_SYNC BIT2 -#define MISCSTATUS_BRG1_ZERO BIT1 -#define MISCSTATUS_BRG0_ZERO BIT0 - -#define usc_UnlatchIostatusBits(a,b) usc_OutReg((a),MISR,(u16)((b) & 0xaaa0)) -#define usc_UnlatchMiscstatusBits(a,b) usc_OutReg((a),MISR,(u16)((b) & 0x000f)) - -#define SICR_RXC_ACTIVE BIT15 -#define SICR_RXC_INACTIVE BIT14 -#define SICR_RXC (BIT15+BIT14) -#define SICR_TXC_ACTIVE BIT13 -#define SICR_TXC_INACTIVE BIT12 -#define SICR_TXC (BIT13+BIT12) -#define SICR_RI_ACTIVE BIT11 -#define SICR_RI_INACTIVE BIT10 -#define SICR_RI (BIT11+BIT10) -#define SICR_DSR_ACTIVE BIT9 -#define SICR_DSR_INACTIVE BIT8 -#define SICR_DSR (BIT9+BIT8) -#define SICR_DCD_ACTIVE BIT7 -#define SICR_DCD_INACTIVE BIT6 -#define SICR_DCD (BIT7+BIT6) -#define SICR_CTS_ACTIVE BIT5 -#define SICR_CTS_INACTIVE BIT4 -#define SICR_CTS (BIT5+BIT4) -#define SICR_RCC_UNDERFLOW BIT3 -#define SICR_DPLL_NO_SYNC BIT2 -#define SICR_BRG1_ZERO BIT1 -#define SICR_BRG0_ZERO BIT0 - -void usc_DisableMasterIrqBit( struct mgsl_struct *info ); -void usc_EnableMasterIrqBit( struct mgsl_struct *info ); -void usc_EnableInterrupts( struct mgsl_struct *info, u16 IrqMask ); -void usc_DisableInterrupts( struct mgsl_struct *info, u16 IrqMask ); -void usc_ClearIrqPendingBits( struct mgsl_struct *info, u16 IrqMask ); - -#define usc_EnableInterrupts( a, b ) \ - usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0xff00) + 0xc0 + (b)) ) - -#define usc_DisableInterrupts( a, b ) \ - usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0xff00) + 0x80 + (b)) ) - -#define usc_EnableMasterIrqBit(a) \ - usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0x0f00) + 0xb000) ) - -#define usc_DisableMasterIrqBit(a) \ - usc_OutReg( (a), ICR, (u16)(usc_InReg((a),ICR) & 0x7f00) ) - -#define usc_ClearIrqPendingBits( a, b ) usc_OutReg( (a), DCCR, 0x40 + (b) ) - -/* - * Transmit status Bits in Transmit Control status Register (TCSR) - * and Transmit Interrupt Control Register (TICR) (except BIT2, BIT0) - */ - -#define TXSTATUS_PREAMBLE_SENT BIT7 -#define TXSTATUS_IDLE_SENT BIT6 -#define TXSTATUS_ABORT_SENT BIT5 -#define TXSTATUS_EOF BIT4 -#define TXSTATUS_CRC_SENT BIT3 -#define TXSTATUS_ALL_SENT BIT2 -#define TXSTATUS_UNDERRUN BIT1 -#define TXSTATUS_FIFO_EMPTY BIT0 - -#define DICR_MASTER BIT15 -#define DICR_TRANSMIT BIT0 -#define DICR_RECEIVE BIT1 - -#define usc_EnableDmaInterrupts(a,b) \ - usc_OutDmaReg( (a), DICR, (u16)(usc_InDmaReg((a),DICR) | (b)) ) - -#define usc_DisableDmaInterrupts(a,b) \ - usc_OutDmaReg( (a), DICR, (u16)(usc_InDmaReg((a),DICR) & ~(b)) ) - -#define usc_EnableStatusIrqs(a,b) \ - usc_OutReg( (a), SICR, (u16)(usc_InReg((a),SICR) | (b)) ) - -#define usc_DisablestatusIrqs(a,b) \ - usc_OutReg( (a), SICR, (u16)(usc_InReg((a),SICR) & ~(b)) ) - -/* Transmit status Bits in Transmit Control status Register (TCSR) */ -/* and Transmit Interrupt Control Register (TICR) (except BIT2, BIT0) */ - - -#define DISABLE_UNCONDITIONAL 0 -#define DISABLE_END_OF_FRAME 1 -#define ENABLE_UNCONDITIONAL 2 -#define ENABLE_AUTO_CTS 3 -#define ENABLE_AUTO_DCD 3 -#define usc_EnableTransmitter(a,b) \ - usc_OutReg( (a), TMR, (u16)((usc_InReg((a),TMR) & 0xfffc) | (b)) ) -#define usc_EnableReceiver(a,b) \ - usc_OutReg( (a), RMR, (u16)((usc_InReg((a),RMR) & 0xfffc) | (b)) ) - -static u16 usc_InDmaReg( struct mgsl_struct *info, u16 Port ); -static void usc_OutDmaReg( struct mgsl_struct *info, u16 Port, u16 Value ); -static void usc_DmaCmd( struct mgsl_struct *info, u16 Cmd ); - -static u16 usc_InReg( struct mgsl_struct *info, u16 Port ); -static void usc_OutReg( struct mgsl_struct *info, u16 Port, u16 Value ); -static void usc_RTCmd( struct mgsl_struct *info, u16 Cmd ); -void usc_RCmd( struct mgsl_struct *info, u16 Cmd ); -void usc_TCmd( struct mgsl_struct *info, u16 Cmd ); - -#define usc_TCmd(a,b) usc_OutReg((a), TCSR, (u16)((a)->tcsr_value + (b))) -#define usc_RCmd(a,b) usc_OutReg((a), RCSR, (b)) - -#define usc_SetTransmitSyncChars(a,s0,s1) usc_OutReg((a), TSR, (u16)(((u16)s0<<8)|(u16)s1)) - -static void usc_process_rxoverrun_sync( struct mgsl_struct *info ); -static void usc_start_receiver( struct mgsl_struct *info ); -static void usc_stop_receiver( struct mgsl_struct *info ); - -static void usc_start_transmitter( struct mgsl_struct *info ); -static void usc_stop_transmitter( struct mgsl_struct *info ); -static void usc_set_txidle( struct mgsl_struct *info ); -static void usc_load_txfifo( struct mgsl_struct *info ); - -static void usc_enable_aux_clock( struct mgsl_struct *info, u32 DataRate ); -static void usc_enable_loopback( struct mgsl_struct *info, int enable ); - -static void usc_get_serial_signals( struct mgsl_struct *info ); -static void usc_set_serial_signals( struct mgsl_struct *info ); - -static void usc_reset( struct mgsl_struct *info ); - -static void usc_set_sync_mode( struct mgsl_struct *info ); -static void usc_set_sdlc_mode( struct mgsl_struct *info ); -static void usc_set_async_mode( struct mgsl_struct *info ); -static void usc_enable_async_clock( struct mgsl_struct *info, u32 DataRate ); - -static void usc_loopback_frame( struct mgsl_struct *info ); - -static void mgsl_tx_timeout(unsigned long context); - - -static void usc_loopmode_cancel_transmit( struct mgsl_struct * info ); -static void usc_loopmode_insert_request( struct mgsl_struct * info ); -static int usc_loopmode_active( struct mgsl_struct * info); -static void usc_loopmode_send_done( struct mgsl_struct * info ); - -static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigned long arg); - -#if SYNCLINK_GENERIC_HDLC -#define dev_to_port(D) (dev_to_hdlc(D)->priv) -static void hdlcdev_tx_done(struct mgsl_struct *info); -static void hdlcdev_rx(struct mgsl_struct *info, char *buf, int size); -static int hdlcdev_init(struct mgsl_struct *info); -static void hdlcdev_exit(struct mgsl_struct *info); -#endif - -/* - * Defines a BUS descriptor value for the PCI adapter - * local bus address ranges. - */ - -#define BUS_DESCRIPTOR( WrHold, WrDly, RdDly, Nwdd, Nwad, Nxda, Nrdd, Nrad ) \ -(0x00400020 + \ -((WrHold) << 30) + \ -((WrDly) << 28) + \ -((RdDly) << 26) + \ -((Nwdd) << 20) + \ -((Nwad) << 15) + \ -((Nxda) << 13) + \ -((Nrdd) << 11) + \ -((Nrad) << 6) ) - -static void mgsl_trace_block(struct mgsl_struct *info,const char* data, int count, int xmit); - -/* - * Adapter diagnostic routines - */ -static bool mgsl_register_test( struct mgsl_struct *info ); -static bool mgsl_irq_test( struct mgsl_struct *info ); -static bool mgsl_dma_test( struct mgsl_struct *info ); -static bool mgsl_memory_test( struct mgsl_struct *info ); -static int mgsl_adapter_test( struct mgsl_struct *info ); - -/* - * device and resource management routines - */ -static int mgsl_claim_resources(struct mgsl_struct *info); -static void mgsl_release_resources(struct mgsl_struct *info); -static void mgsl_add_device(struct mgsl_struct *info); -static struct mgsl_struct* mgsl_allocate_device(void); - -/* - * DMA buffer manupulation functions. - */ -static void mgsl_free_rx_frame_buffers( struct mgsl_struct *info, unsigned int StartIndex, unsigned int EndIndex ); -static bool mgsl_get_rx_frame( struct mgsl_struct *info ); -static bool mgsl_get_raw_rx_frame( struct mgsl_struct *info ); -static void mgsl_reset_rx_dma_buffers( struct mgsl_struct *info ); -static void mgsl_reset_tx_dma_buffers( struct mgsl_struct *info ); -static int num_free_tx_dma_buffers(struct mgsl_struct *info); -static void mgsl_load_tx_dma_buffer( struct mgsl_struct *info, const char *Buffer, unsigned int BufferSize); -static void mgsl_load_pci_memory(char* TargetPtr, const char* SourcePtr, unsigned short count); - -/* - * DMA and Shared Memory buffer allocation and formatting - */ -static int mgsl_allocate_dma_buffers(struct mgsl_struct *info); -static void mgsl_free_dma_buffers(struct mgsl_struct *info); -static int mgsl_alloc_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList,int Buffercount); -static void mgsl_free_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList,int Buffercount); -static int mgsl_alloc_buffer_list_memory(struct mgsl_struct *info); -static void mgsl_free_buffer_list_memory(struct mgsl_struct *info); -static int mgsl_alloc_intermediate_rxbuffer_memory(struct mgsl_struct *info); -static void mgsl_free_intermediate_rxbuffer_memory(struct mgsl_struct *info); -static int mgsl_alloc_intermediate_txbuffer_memory(struct mgsl_struct *info); -static void mgsl_free_intermediate_txbuffer_memory(struct mgsl_struct *info); -static bool load_next_tx_holding_buffer(struct mgsl_struct *info); -static int save_tx_buffer_request(struct mgsl_struct *info,const char *Buffer, unsigned int BufferSize); - -/* - * Bottom half interrupt handlers - */ -static void mgsl_bh_handler(struct work_struct *work); -static void mgsl_bh_receive(struct mgsl_struct *info); -static void mgsl_bh_transmit(struct mgsl_struct *info); -static void mgsl_bh_status(struct mgsl_struct *info); - -/* - * Interrupt handler routines and dispatch table. - */ -static void mgsl_isr_null( struct mgsl_struct *info ); -static void mgsl_isr_transmit_data( struct mgsl_struct *info ); -static void mgsl_isr_receive_data( struct mgsl_struct *info ); -static void mgsl_isr_receive_status( struct mgsl_struct *info ); -static void mgsl_isr_transmit_status( struct mgsl_struct *info ); -static void mgsl_isr_io_pin( struct mgsl_struct *info ); -static void mgsl_isr_misc( struct mgsl_struct *info ); -static void mgsl_isr_receive_dma( struct mgsl_struct *info ); -static void mgsl_isr_transmit_dma( struct mgsl_struct *info ); - -typedef void (*isr_dispatch_func)(struct mgsl_struct *); - -static isr_dispatch_func UscIsrTable[7] = -{ - mgsl_isr_null, - mgsl_isr_misc, - mgsl_isr_io_pin, - mgsl_isr_transmit_data, - mgsl_isr_transmit_status, - mgsl_isr_receive_data, - mgsl_isr_receive_status -}; - -/* - * ioctl call handlers - */ -static int tiocmget(struct tty_struct *tty); -static int tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear); -static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount - __user *user_icount); -static int mgsl_get_params(struct mgsl_struct * info, MGSL_PARAMS __user *user_params); -static int mgsl_set_params(struct mgsl_struct * info, MGSL_PARAMS __user *new_params); -static int mgsl_get_txidle(struct mgsl_struct * info, int __user *idle_mode); -static int mgsl_set_txidle(struct mgsl_struct * info, int idle_mode); -static int mgsl_txenable(struct mgsl_struct * info, int enable); -static int mgsl_txabort(struct mgsl_struct * info); -static int mgsl_rxenable(struct mgsl_struct * info, int enable); -static int mgsl_wait_event(struct mgsl_struct * info, int __user *mask); -static int mgsl_loopmode_send_done( struct mgsl_struct * info ); - -/* set non-zero on successful registration with PCI subsystem */ -static bool pci_registered; - -/* - * Global linked list of SyncLink devices - */ -static struct mgsl_struct *mgsl_device_list; -static int mgsl_device_count; - -/* - * Set this param to non-zero to load eax with the - * .text section address and breakpoint on module load. - * This is useful for use with gdb and add-symbol-file command. - */ -static int break_on_load; - -/* - * Driver major number, defaults to zero to get auto - * assigned major number. May be forced as module parameter. - */ -static int ttymajor; - -/* - * Array of user specified options for ISA adapters. - */ -static int io[MAX_ISA_DEVICES]; -static int irq[MAX_ISA_DEVICES]; -static int dma[MAX_ISA_DEVICES]; -static int debug_level; -static int maxframe[MAX_TOTAL_DEVICES]; -static int txdmabufs[MAX_TOTAL_DEVICES]; -static int txholdbufs[MAX_TOTAL_DEVICES]; - -module_param(break_on_load, bool, 0); -module_param(ttymajor, int, 0); -module_param_array(io, int, NULL, 0); -module_param_array(irq, int, NULL, 0); -module_param_array(dma, int, NULL, 0); -module_param(debug_level, int, 0); -module_param_array(maxframe, int, NULL, 0); -module_param_array(txdmabufs, int, NULL, 0); -module_param_array(txholdbufs, int, NULL, 0); - -static char *driver_name = "SyncLink serial driver"; -static char *driver_version = "$Revision: 4.38 $"; - -static int synclink_init_one (struct pci_dev *dev, - const struct pci_device_id *ent); -static void synclink_remove_one (struct pci_dev *dev); - -static struct pci_device_id synclink_pci_tbl[] = { - { PCI_VENDOR_ID_MICROGATE, PCI_DEVICE_ID_MICROGATE_USC, PCI_ANY_ID, PCI_ANY_ID, }, - { PCI_VENDOR_ID_MICROGATE, 0x0210, PCI_ANY_ID, PCI_ANY_ID, }, - { 0, }, /* terminate list */ -}; -MODULE_DEVICE_TABLE(pci, synclink_pci_tbl); - -MODULE_LICENSE("GPL"); - -static struct pci_driver synclink_pci_driver = { - .name = "synclink", - .id_table = synclink_pci_tbl, - .probe = synclink_init_one, - .remove = __devexit_p(synclink_remove_one), -}; - -static struct tty_driver *serial_driver; - -/* number of characters left in xmit buffer before we ask for more */ -#define WAKEUP_CHARS 256 - - -static void mgsl_change_params(struct mgsl_struct *info); -static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout); - -/* - * 1st function defined in .text section. Calling this function in - * init_module() followed by a breakpoint allows a remote debugger - * (gdb) to get the .text address for the add-symbol-file command. - * This allows remote debugging of dynamically loadable modules. - */ -static void* mgsl_get_text_ptr(void) -{ - return mgsl_get_text_ptr; -} - -static inline int mgsl_paranoia_check(struct mgsl_struct *info, - char *name, const char *routine) -{ -#ifdef MGSL_PARANOIA_CHECK - static const char *badmagic = - "Warning: bad magic number for mgsl struct (%s) in %s\n"; - static const char *badinfo = - "Warning: null mgsl_struct for (%s) in %s\n"; - - if (!info) { - printk(badinfo, name, routine); - return 1; - } - if (info->magic != MGSL_MAGIC) { - printk(badmagic, name, routine); - return 1; - } -#else - if (!info) - return 1; -#endif - return 0; -} - -/** - * line discipline callback wrappers - * - * The wrappers maintain line discipline references - * while calling into the line discipline. - * - * ldisc_receive_buf - pass receive data to line discipline - */ - -static void ldisc_receive_buf(struct tty_struct *tty, - const __u8 *data, char *flags, int count) -{ - struct tty_ldisc *ld; - if (!tty) - return; - ld = tty_ldisc_ref(tty); - if (ld) { - if (ld->ops->receive_buf) - ld->ops->receive_buf(tty, data, flags, count); - tty_ldisc_deref(ld); - } -} - -/* mgsl_stop() throttle (stop) transmitter - * - * Arguments: tty pointer to tty info structure - * Return Value: None - */ -static void mgsl_stop(struct tty_struct *tty) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (mgsl_paranoia_check(info, tty->name, "mgsl_stop")) - return; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("mgsl_stop(%s)\n",info->device_name); - - spin_lock_irqsave(&info->irq_spinlock,flags); - if (info->tx_enabled) - usc_stop_transmitter(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - -} /* end of mgsl_stop() */ - -/* mgsl_start() release (start) transmitter - * - * Arguments: tty pointer to tty info structure - * Return Value: None - */ -static void mgsl_start(struct tty_struct *tty) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (mgsl_paranoia_check(info, tty->name, "mgsl_start")) - return; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("mgsl_start(%s)\n",info->device_name); - - spin_lock_irqsave(&info->irq_spinlock,flags); - if (!info->tx_enabled) - usc_start_transmitter(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - -} /* end of mgsl_start() */ - -/* - * Bottom half work queue access functions - */ - -/* mgsl_bh_action() Return next bottom half action to perform. - * Return Value: BH action code or 0 if nothing to do. - */ -static int mgsl_bh_action(struct mgsl_struct *info) -{ - unsigned long flags; - int rc = 0; - - spin_lock_irqsave(&info->irq_spinlock,flags); - - if (info->pending_bh & BH_RECEIVE) { - info->pending_bh &= ~BH_RECEIVE; - rc = BH_RECEIVE; - } else if (info->pending_bh & BH_TRANSMIT) { - info->pending_bh &= ~BH_TRANSMIT; - rc = BH_TRANSMIT; - } else if (info->pending_bh & BH_STATUS) { - info->pending_bh &= ~BH_STATUS; - rc = BH_STATUS; - } - - if (!rc) { - /* Mark BH routine as complete */ - info->bh_running = false; - info->bh_requested = false; - } - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - return rc; -} - -/* - * Perform bottom half processing of work items queued by ISR. - */ -static void mgsl_bh_handler(struct work_struct *work) -{ - struct mgsl_struct *info = - container_of(work, struct mgsl_struct, task); - int action; - - if (!info) - return; - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):mgsl_bh_handler(%s) entry\n", - __FILE__,__LINE__,info->device_name); - - info->bh_running = true; - - while((action = mgsl_bh_action(info)) != 0) { - - /* Process work item */ - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):mgsl_bh_handler() work item action=%d\n", - __FILE__,__LINE__,action); - - switch (action) { - - case BH_RECEIVE: - mgsl_bh_receive(info); - break; - case BH_TRANSMIT: - mgsl_bh_transmit(info); - break; - case BH_STATUS: - mgsl_bh_status(info); - break; - default: - /* unknown work item ID */ - printk("Unknown work item ID=%08X!\n", action); - break; - } - } - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):mgsl_bh_handler(%s) exit\n", - __FILE__,__LINE__,info->device_name); -} - -static void mgsl_bh_receive(struct mgsl_struct *info) -{ - bool (*get_rx_frame)(struct mgsl_struct *info) = - (info->params.mode == MGSL_MODE_HDLC ? mgsl_get_rx_frame : mgsl_get_raw_rx_frame); - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):mgsl_bh_receive(%s)\n", - __FILE__,__LINE__,info->device_name); - - do - { - if (info->rx_rcc_underrun) { - unsigned long flags; - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_start_receiver(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - return; - } - } while(get_rx_frame(info)); -} - -static void mgsl_bh_transmit(struct mgsl_struct *info) -{ - struct tty_struct *tty = info->port.tty; - unsigned long flags; - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):mgsl_bh_transmit() entry on %s\n", - __FILE__,__LINE__,info->device_name); - - if (tty) - tty_wakeup(tty); - - /* if transmitter idle and loopmode_send_done_requested - * then start echoing RxD to TxD - */ - spin_lock_irqsave(&info->irq_spinlock,flags); - if ( !info->tx_active && info->loopmode_send_done_requested ) - usc_loopmode_send_done( info ); - spin_unlock_irqrestore(&info->irq_spinlock,flags); -} - -static void mgsl_bh_status(struct mgsl_struct *info) -{ - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):mgsl_bh_status() entry on %s\n", - __FILE__,__LINE__,info->device_name); - - info->ri_chkcount = 0; - info->dsr_chkcount = 0; - info->dcd_chkcount = 0; - info->cts_chkcount = 0; -} - -/* mgsl_isr_receive_status() - * - * Service a receive status interrupt. The type of status - * interrupt is indicated by the state of the RCSR. - * This is only used for HDLC mode. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_isr_receive_status( struct mgsl_struct *info ) -{ - u16 status = usc_InReg( info, RCSR ); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_receive_status status=%04X\n", - __FILE__,__LINE__,status); - - if ( (status & RXSTATUS_ABORT_RECEIVED) && - info->loopmode_insert_requested && - usc_loopmode_active(info) ) - { - ++info->icount.rxabort; - info->loopmode_insert_requested = false; - - /* clear CMR:13 to start echoing RxD to TxD */ - info->cmr_value &= ~BIT13; - usc_OutReg(info, CMR, info->cmr_value); - - /* disable received abort irq (no longer required) */ - usc_OutReg(info, RICR, - (usc_InReg(info, RICR) & ~RXSTATUS_ABORT_RECEIVED)); - } - - if (status & (RXSTATUS_EXITED_HUNT + RXSTATUS_IDLE_RECEIVED)) { - if (status & RXSTATUS_EXITED_HUNT) - info->icount.exithunt++; - if (status & RXSTATUS_IDLE_RECEIVED) - info->icount.rxidle++; - wake_up_interruptible(&info->event_wait_q); - } - - if (status & RXSTATUS_OVERRUN){ - info->icount.rxover++; - usc_process_rxoverrun_sync( info ); - } - - usc_ClearIrqPendingBits( info, RECEIVE_STATUS ); - usc_UnlatchRxstatusBits( info, status ); - -} /* end of mgsl_isr_receive_status() */ - -/* mgsl_isr_transmit_status() - * - * Service a transmit status interrupt - * HDLC mode :end of transmit frame - * Async mode:all data is sent - * transmit status is indicated by bits in the TCSR. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_isr_transmit_status( struct mgsl_struct *info ) -{ - u16 status = usc_InReg( info, TCSR ); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_transmit_status status=%04X\n", - __FILE__,__LINE__,status); - - usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); - usc_UnlatchTxstatusBits( info, status ); - - if ( status & (TXSTATUS_UNDERRUN | TXSTATUS_ABORT_SENT) ) - { - /* finished sending HDLC abort. This may leave */ - /* the TxFifo with data from the aborted frame */ - /* so purge the TxFifo. Also shutdown the DMA */ - /* channel in case there is data remaining in */ - /* the DMA buffer */ - usc_DmaCmd( info, DmaCmd_ResetTxChannel ); - usc_RTCmd( info, RTCmd_PurgeTxFifo ); - } - - if ( status & TXSTATUS_EOF_SENT ) - info->icount.txok++; - else if ( status & TXSTATUS_UNDERRUN ) - info->icount.txunder++; - else if ( status & TXSTATUS_ABORT_SENT ) - info->icount.txabort++; - else - info->icount.txunder++; - - info->tx_active = false; - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - del_timer(&info->tx_timer); - - if ( info->drop_rts_on_tx_done ) { - usc_get_serial_signals( info ); - if ( info->serial_signals & SerialSignal_RTS ) { - info->serial_signals &= ~SerialSignal_RTS; - usc_set_serial_signals( info ); - } - info->drop_rts_on_tx_done = false; - } - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_tx_done(info); - else -#endif - { - if (info->port.tty->stopped || info->port.tty->hw_stopped) { - usc_stop_transmitter(info); - return; - } - info->pending_bh |= BH_TRANSMIT; - } - -} /* end of mgsl_isr_transmit_status() */ - -/* mgsl_isr_io_pin() - * - * Service an Input/Output pin interrupt. The type of - * interrupt is indicated by bits in the MISR - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_isr_io_pin( struct mgsl_struct *info ) -{ - struct mgsl_icount *icount; - u16 status = usc_InReg( info, MISR ); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_io_pin status=%04X\n", - __FILE__,__LINE__,status); - - usc_ClearIrqPendingBits( info, IO_PIN ); - usc_UnlatchIostatusBits( info, status ); - - if (status & (MISCSTATUS_CTS_LATCHED | MISCSTATUS_DCD_LATCHED | - MISCSTATUS_DSR_LATCHED | MISCSTATUS_RI_LATCHED) ) { - icount = &info->icount; - /* update input line counters */ - if (status & MISCSTATUS_RI_LATCHED) { - if ((info->ri_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) - usc_DisablestatusIrqs(info,SICR_RI); - icount->rng++; - if ( status & MISCSTATUS_RI ) - info->input_signal_events.ri_up++; - else - info->input_signal_events.ri_down++; - } - if (status & MISCSTATUS_DSR_LATCHED) { - if ((info->dsr_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) - usc_DisablestatusIrqs(info,SICR_DSR); - icount->dsr++; - if ( status & MISCSTATUS_DSR ) - info->input_signal_events.dsr_up++; - else - info->input_signal_events.dsr_down++; - } - if (status & MISCSTATUS_DCD_LATCHED) { - if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) - usc_DisablestatusIrqs(info,SICR_DCD); - icount->dcd++; - if (status & MISCSTATUS_DCD) { - info->input_signal_events.dcd_up++; - } else - info->input_signal_events.dcd_down++; -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) { - if (status & MISCSTATUS_DCD) - netif_carrier_on(info->netdev); - else - netif_carrier_off(info->netdev); - } -#endif - } - if (status & MISCSTATUS_CTS_LATCHED) - { - if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) - usc_DisablestatusIrqs(info,SICR_CTS); - icount->cts++; - if ( status & MISCSTATUS_CTS ) - info->input_signal_events.cts_up++; - else - info->input_signal_events.cts_down++; - } - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - - if ( (info->port.flags & ASYNC_CHECK_CD) && - (status & MISCSTATUS_DCD_LATCHED) ) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s CD now %s...", info->device_name, - (status & MISCSTATUS_DCD) ? "on" : "off"); - if (status & MISCSTATUS_DCD) - wake_up_interruptible(&info->port.open_wait); - else { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("doing serial hangup..."); - if (info->port.tty) - tty_hangup(info->port.tty); - } - } - - if ( (info->port.flags & ASYNC_CTS_FLOW) && - (status & MISCSTATUS_CTS_LATCHED) ) { - if (info->port.tty->hw_stopped) { - if (status & MISCSTATUS_CTS) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("CTS tx start..."); - if (info->port.tty) - info->port.tty->hw_stopped = 0; - usc_start_transmitter(info); - info->pending_bh |= BH_TRANSMIT; - return; - } - } else { - if (!(status & MISCSTATUS_CTS)) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("CTS tx stop..."); - if (info->port.tty) - info->port.tty->hw_stopped = 1; - usc_stop_transmitter(info); - } - } - } - } - - info->pending_bh |= BH_STATUS; - - /* for diagnostics set IRQ flag */ - if ( status & MISCSTATUS_TXC_LATCHED ){ - usc_OutReg( info, SICR, - (unsigned short)(usc_InReg(info,SICR) & ~(SICR_TXC_ACTIVE+SICR_TXC_INACTIVE)) ); - usc_UnlatchIostatusBits( info, MISCSTATUS_TXC_LATCHED ); - info->irq_occurred = true; - } - -} /* end of mgsl_isr_io_pin() */ - -/* mgsl_isr_transmit_data() - * - * Service a transmit data interrupt (async mode only). - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_isr_transmit_data( struct mgsl_struct *info ) -{ - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_transmit_data xmit_cnt=%d\n", - __FILE__,__LINE__,info->xmit_cnt); - - usc_ClearIrqPendingBits( info, TRANSMIT_DATA ); - - if (info->port.tty->stopped || info->port.tty->hw_stopped) { - usc_stop_transmitter(info); - return; - } - - if ( info->xmit_cnt ) - usc_load_txfifo( info ); - else - info->tx_active = false; - - if (info->xmit_cnt < WAKEUP_CHARS) - info->pending_bh |= BH_TRANSMIT; - -} /* end of mgsl_isr_transmit_data() */ - -/* mgsl_isr_receive_data() - * - * Service a receive data interrupt. This occurs - * when operating in asynchronous interrupt transfer mode. - * The receive data FIFO is flushed to the receive data buffers. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_isr_receive_data( struct mgsl_struct *info ) -{ - int Fifocount; - u16 status; - int work = 0; - unsigned char DataByte; - struct tty_struct *tty = info->port.tty; - struct mgsl_icount *icount = &info->icount; - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_receive_data\n", - __FILE__,__LINE__); - - usc_ClearIrqPendingBits( info, RECEIVE_DATA ); - - /* select FIFO status for RICR readback */ - usc_RCmd( info, RCmd_SelectRicrRxFifostatus ); - - /* clear the Wordstatus bit so that status readback */ - /* only reflects the status of this byte */ - usc_OutReg( info, RICR+LSBONLY, (u16)(usc_InReg(info, RICR+LSBONLY) & ~BIT3 )); - - /* flush the receive FIFO */ - - while( (Fifocount = (usc_InReg(info,RICR) >> 8)) ) { - int flag; - - /* read one byte from RxFIFO */ - outw( (inw(info->io_base + CCAR) & 0x0780) | (RDR+LSBONLY), - info->io_base + CCAR ); - DataByte = inb( info->io_base + CCAR ); - - /* get the status of the received byte */ - status = usc_InReg(info, RCSR); - if ( status & (RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR + - RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) ) - usc_UnlatchRxstatusBits(info,RXSTATUS_ALL); - - icount->rx++; - - flag = 0; - if ( status & (RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR + - RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) ) { - printk("rxerr=%04X\n",status); - /* update error statistics */ - if ( status & RXSTATUS_BREAK_RECEIVED ) { - status &= ~(RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR); - icount->brk++; - } else if (status & RXSTATUS_PARITY_ERROR) - icount->parity++; - else if (status & RXSTATUS_FRAMING_ERROR) - icount->frame++; - else if (status & RXSTATUS_OVERRUN) { - /* must issue purge fifo cmd before */ - /* 16C32 accepts more receive chars */ - usc_RTCmd(info,RTCmd_PurgeRxFifo); - icount->overrun++; - } - - /* discard char if tty control flags say so */ - if (status & info->ignore_status_mask) - continue; - - status &= info->read_status_mask; - - if (status & RXSTATUS_BREAK_RECEIVED) { - flag = TTY_BREAK; - if (info->port.flags & ASYNC_SAK) - do_SAK(tty); - } else if (status & RXSTATUS_PARITY_ERROR) - flag = TTY_PARITY; - else if (status & RXSTATUS_FRAMING_ERROR) - flag = TTY_FRAME; - } /* end of if (error) */ - tty_insert_flip_char(tty, DataByte, flag); - if (status & RXSTATUS_OVERRUN) { - /* Overrun is special, since it's - * reported immediately, and doesn't - * affect the current character - */ - work += tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } - } - - if ( debug_level >= DEBUG_LEVEL_ISR ) { - printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n", - __FILE__,__LINE__,icount->rx,icount->brk, - icount->parity,icount->frame,icount->overrun); - } - - if(work) - tty_flip_buffer_push(tty); -} - -/* mgsl_isr_misc() - * - * Service a miscellaneous interrupt source. - * - * Arguments: info pointer to device extension (instance data) - * Return Value: None - */ -static void mgsl_isr_misc( struct mgsl_struct *info ) -{ - u16 status = usc_InReg( info, MISR ); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_misc status=%04X\n", - __FILE__,__LINE__,status); - - if ((status & MISCSTATUS_RCC_UNDERRUN) && - (info->params.mode == MGSL_MODE_HDLC)) { - - /* turn off receiver and rx DMA */ - usc_EnableReceiver(info,DISABLE_UNCONDITIONAL); - usc_DmaCmd(info, DmaCmd_ResetRxChannel); - usc_UnlatchRxstatusBits(info, RXSTATUS_ALL); - usc_ClearIrqPendingBits(info, RECEIVE_DATA + RECEIVE_STATUS); - usc_DisableInterrupts(info, RECEIVE_DATA + RECEIVE_STATUS); - - /* schedule BH handler to restart receiver */ - info->pending_bh |= BH_RECEIVE; - info->rx_rcc_underrun = true; - } - - usc_ClearIrqPendingBits( info, MISC ); - usc_UnlatchMiscstatusBits( info, status ); - -} /* end of mgsl_isr_misc() */ - -/* mgsl_isr_null() - * - * Services undefined interrupt vectors from the - * USC. (hence this function SHOULD never be called) - * - * Arguments: info pointer to device extension (instance data) - * Return Value: None - */ -static void mgsl_isr_null( struct mgsl_struct *info ) -{ - -} /* end of mgsl_isr_null() */ - -/* mgsl_isr_receive_dma() - * - * Service a receive DMA channel interrupt. - * For this driver there are two sources of receive DMA interrupts - * as identified in the Receive DMA mode Register (RDMR): - * - * BIT3 EOA/EOL End of List, all receive buffers in receive - * buffer list have been filled (no more free buffers - * available). The DMA controller has shut down. - * - * BIT2 EOB End of Buffer. This interrupt occurs when a receive - * DMA buffer is terminated in response to completion - * of a good frame or a frame with errors. The status - * of the frame is stored in the buffer entry in the - * list of receive buffer entries. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_isr_receive_dma( struct mgsl_struct *info ) -{ - u16 status; - - /* clear interrupt pending and IUS bit for Rx DMA IRQ */ - usc_OutDmaReg( info, CDIR, BIT9+BIT1 ); - - /* Read the receive DMA status to identify interrupt type. */ - /* This also clears the status bits. */ - status = usc_InDmaReg( info, RDMR ); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_receive_dma(%s) status=%04X\n", - __FILE__,__LINE__,info->device_name,status); - - info->pending_bh |= BH_RECEIVE; - - if ( status & BIT3 ) { - info->rx_overflow = true; - info->icount.buf_overrun++; - } - -} /* end of mgsl_isr_receive_dma() */ - -/* mgsl_isr_transmit_dma() - * - * This function services a transmit DMA channel interrupt. - * - * For this driver there is one source of transmit DMA interrupts - * as identified in the Transmit DMA Mode Register (TDMR): - * - * BIT2 EOB End of Buffer. This interrupt occurs when a - * transmit DMA buffer has been emptied. - * - * The driver maintains enough transmit DMA buffers to hold at least - * one max frame size transmit frame. When operating in a buffered - * transmit mode, there may be enough transmit DMA buffers to hold at - * least two or more max frame size frames. On an EOB condition, - * determine if there are any queued transmit buffers and copy into - * transmit DMA buffers if we have room. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_isr_transmit_dma( struct mgsl_struct *info ) -{ - u16 status; - - /* clear interrupt pending and IUS bit for Tx DMA IRQ */ - usc_OutDmaReg(info, CDIR, BIT8+BIT0 ); - - /* Read the transmit DMA status to identify interrupt type. */ - /* This also clears the status bits. */ - - status = usc_InDmaReg( info, TDMR ); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):mgsl_isr_transmit_dma(%s) status=%04X\n", - __FILE__,__LINE__,info->device_name,status); - - if ( status & BIT2 ) { - --info->tx_dma_buffers_used; - - /* if there are transmit frames queued, - * try to load the next one - */ - if ( load_next_tx_holding_buffer(info) ) { - /* if call returns non-zero value, we have - * at least one free tx holding buffer - */ - info->pending_bh |= BH_TRANSMIT; - } - } - -} /* end of mgsl_isr_transmit_dma() */ - -/* mgsl_interrupt() - * - * Interrupt service routine entry point. - * - * Arguments: - * - * irq interrupt number that caused interrupt - * dev_id device ID supplied during interrupt registration - * - * Return Value: None - */ -static irqreturn_t mgsl_interrupt(int dummy, void *dev_id) -{ - struct mgsl_struct *info = dev_id; - u16 UscVector; - u16 DmaVector; - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk(KERN_DEBUG "%s(%d):mgsl_interrupt(%d)entry.\n", - __FILE__, __LINE__, info->irq_level); - - spin_lock(&info->irq_spinlock); - - for(;;) { - /* Read the interrupt vectors from hardware. */ - UscVector = usc_InReg(info, IVR) >> 9; - DmaVector = usc_InDmaReg(info, DIVR); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s UscVector=%08X DmaVector=%08X\n", - __FILE__,__LINE__,info->device_name,UscVector,DmaVector); - - if ( !UscVector && !DmaVector ) - break; - - /* Dispatch interrupt vector */ - if ( UscVector ) - (*UscIsrTable[UscVector])(info); - else if ( (DmaVector&(BIT10|BIT9)) == BIT10) - mgsl_isr_transmit_dma(info); - else - mgsl_isr_receive_dma(info); - - if ( info->isr_overflow ) { - printk(KERN_ERR "%s(%d):%s isr overflow irq=%d\n", - __FILE__, __LINE__, info->device_name, info->irq_level); - usc_DisableMasterIrqBit(info); - usc_DisableDmaInterrupts(info,DICR_MASTER); - break; - } - } - - /* Request bottom half processing if there's something - * for it to do and the bh is not already running - */ - - if ( info->pending_bh && !info->bh_running && !info->bh_requested ) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s queueing bh task.\n", - __FILE__,__LINE__,info->device_name); - schedule_work(&info->task); - info->bh_requested = true; - } - - spin_unlock(&info->irq_spinlock); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk(KERN_DEBUG "%s(%d):mgsl_interrupt(%d)exit.\n", - __FILE__, __LINE__, info->irq_level); - - return IRQ_HANDLED; -} /* end of mgsl_interrupt() */ - -/* startup() - * - * Initialize and start device. - * - * Arguments: info pointer to device instance data - * Return Value: 0 if success, otherwise error code - */ -static int startup(struct mgsl_struct * info) -{ - int retval = 0; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("%s(%d):mgsl_startup(%s)\n",__FILE__,__LINE__,info->device_name); - - if (info->port.flags & ASYNC_INITIALIZED) - return 0; - - if (!info->xmit_buf) { - /* allocate a page of memory for a transmit buffer */ - info->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); - if (!info->xmit_buf) { - printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n", - __FILE__,__LINE__,info->device_name); - return -ENOMEM; - } - } - - info->pending_bh = 0; - - memset(&info->icount, 0, sizeof(info->icount)); - - setup_timer(&info->tx_timer, mgsl_tx_timeout, (unsigned long)info); - - /* Allocate and claim adapter resources */ - retval = mgsl_claim_resources(info); - - /* perform existence check and diagnostics */ - if ( !retval ) - retval = mgsl_adapter_test(info); - - if ( retval ) { - if (capable(CAP_SYS_ADMIN) && info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); - mgsl_release_resources(info); - return retval; - } - - /* program hardware for current parameters */ - mgsl_change_params(info); - - if (info->port.tty) - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); - - info->port.flags |= ASYNC_INITIALIZED; - - return 0; - -} /* end of startup() */ - -/* shutdown() - * - * Called by mgsl_close() and mgsl_hangup() to shutdown hardware - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void shutdown(struct mgsl_struct * info) -{ - unsigned long flags; - - if (!(info->port.flags & ASYNC_INITIALIZED)) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_shutdown(%s)\n", - __FILE__,__LINE__, info->device_name ); - - /* clear status wait queue because status changes */ - /* can't happen after shutting down the hardware */ - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - - del_timer_sync(&info->tx_timer); - - if (info->xmit_buf) { - free_page((unsigned long) info->xmit_buf); - info->xmit_buf = NULL; - } - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_DisableMasterIrqBit(info); - usc_stop_receiver(info); - usc_stop_transmitter(info); - usc_DisableInterrupts(info,RECEIVE_DATA + RECEIVE_STATUS + - TRANSMIT_DATA + TRANSMIT_STATUS + IO_PIN + MISC ); - usc_DisableDmaInterrupts(info,DICR_MASTER + DICR_TRANSMIT + DICR_RECEIVE); - - /* Disable DMAEN (Port 7, Bit 14) */ - /* This disconnects the DMA request signal from the ISA bus */ - /* on the ISA adapter. This has no effect for the PCI adapter */ - usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT15) | BIT14)); - - /* Disable INTEN (Port 6, Bit12) */ - /* This disconnects the IRQ request signal to the ISA bus */ - /* on the ISA adapter. This has no effect for the PCI adapter */ - usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) | BIT12)); - - if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) { - info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); - usc_set_serial_signals(info); - } - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - mgsl_release_resources(info); - - if (info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); - - info->port.flags &= ~ASYNC_INITIALIZED; - -} /* end of shutdown() */ - -static void mgsl_program_hw(struct mgsl_struct *info) -{ - unsigned long flags; - - spin_lock_irqsave(&info->irq_spinlock,flags); - - usc_stop_receiver(info); - usc_stop_transmitter(info); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - - if (info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW || - info->netcount) - usc_set_sync_mode(info); - else - usc_set_async_mode(info); - - usc_set_serial_signals(info); - - info->dcd_chkcount = 0; - info->cts_chkcount = 0; - info->ri_chkcount = 0; - info->dsr_chkcount = 0; - - usc_EnableStatusIrqs(info,SICR_CTS+SICR_DSR+SICR_DCD+SICR_RI); - usc_EnableInterrupts(info, IO_PIN); - usc_get_serial_signals(info); - - if (info->netcount || info->port.tty->termios->c_cflag & CREAD) - usc_start_receiver(info); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); -} - -/* Reconfigure adapter based on new parameters - */ -static void mgsl_change_params(struct mgsl_struct *info) -{ - unsigned cflag; - int bits_per_char; - - if (!info->port.tty || !info->port.tty->termios) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_change_params(%s)\n", - __FILE__,__LINE__, info->device_name ); - - cflag = info->port.tty->termios->c_cflag; - - /* if B0 rate (hangup) specified then negate DTR and RTS */ - /* otherwise assert DTR and RTS */ - if (cflag & CBAUD) - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - else - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - - /* byte size and parity */ - - switch (cflag & CSIZE) { - case CS5: info->params.data_bits = 5; break; - case CS6: info->params.data_bits = 6; break; - case CS7: info->params.data_bits = 7; break; - case CS8: info->params.data_bits = 8; break; - /* Never happens, but GCC is too dumb to figure it out */ - default: info->params.data_bits = 7; break; - } - - if (cflag & CSTOPB) - info->params.stop_bits = 2; - else - info->params.stop_bits = 1; - - info->params.parity = ASYNC_PARITY_NONE; - if (cflag & PARENB) { - if (cflag & PARODD) - info->params.parity = ASYNC_PARITY_ODD; - else - info->params.parity = ASYNC_PARITY_EVEN; -#ifdef CMSPAR - if (cflag & CMSPAR) - info->params.parity = ASYNC_PARITY_SPACE; -#endif - } - - /* calculate number of jiffies to transmit a full - * FIFO (32 bytes) at specified data rate - */ - bits_per_char = info->params.data_bits + - info->params.stop_bits + 1; - - /* if port data rate is set to 460800 or less then - * allow tty settings to override, otherwise keep the - * current data rate. - */ - if (info->params.data_rate <= 460800) - info->params.data_rate = tty_get_baud_rate(info->port.tty); - - if ( info->params.data_rate ) { - info->timeout = (32*HZ*bits_per_char) / - info->params.data_rate; - } - info->timeout += HZ/50; /* Add .02 seconds of slop */ - - if (cflag & CRTSCTS) - info->port.flags |= ASYNC_CTS_FLOW; - else - info->port.flags &= ~ASYNC_CTS_FLOW; - - if (cflag & CLOCAL) - info->port.flags &= ~ASYNC_CHECK_CD; - else - info->port.flags |= ASYNC_CHECK_CD; - - /* process tty input control flags */ - - info->read_status_mask = RXSTATUS_OVERRUN; - if (I_INPCK(info->port.tty)) - info->read_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR; - if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) - info->read_status_mask |= RXSTATUS_BREAK_RECEIVED; - - if (I_IGNPAR(info->port.tty)) - info->ignore_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR; - if (I_IGNBRK(info->port.tty)) { - info->ignore_status_mask |= RXSTATUS_BREAK_RECEIVED; - /* If ignoring parity and break indicators, ignore - * overruns too. (For real raw support). - */ - if (I_IGNPAR(info->port.tty)) - info->ignore_status_mask |= RXSTATUS_OVERRUN; - } - - mgsl_program_hw(info); - -} /* end of mgsl_change_params() */ - -/* mgsl_put_char() - * - * Add a character to the transmit buffer. - * - * Arguments: tty pointer to tty information structure - * ch character to add to transmit buffer - * - * Return Value: None - */ -static int mgsl_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - int ret = 0; - - if (debug_level >= DEBUG_LEVEL_INFO) { - printk(KERN_DEBUG "%s(%d):mgsl_put_char(%d) on %s\n", - __FILE__, __LINE__, ch, info->device_name); - } - - if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char")) - return 0; - - if (!info->xmit_buf) - return 0; - - spin_lock_irqsave(&info->irq_spinlock, flags); - - if ((info->params.mode == MGSL_MODE_ASYNC ) || !info->tx_active) { - if (info->xmit_cnt < SERIAL_XMIT_SIZE - 1) { - info->xmit_buf[info->xmit_head++] = ch; - info->xmit_head &= SERIAL_XMIT_SIZE-1; - info->xmit_cnt++; - ret = 1; - } - } - spin_unlock_irqrestore(&info->irq_spinlock, flags); - return ret; - -} /* end of mgsl_put_char() */ - -/* mgsl_flush_chars() - * - * Enable transmitter so remaining characters in the - * transmit buffer are sent. - * - * Arguments: tty pointer to tty information structure - * Return Value: None - */ -static void mgsl_flush_chars(struct tty_struct *tty) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_flush_chars() entry on %s xmit_cnt=%d\n", - __FILE__,__LINE__,info->device_name,info->xmit_cnt); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_flush_chars")) - return; - - if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || - !info->xmit_buf) - return; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_flush_chars() entry on %s starting transmitter\n", - __FILE__,__LINE__,info->device_name ); - - spin_lock_irqsave(&info->irq_spinlock,flags); - - if (!info->tx_active) { - if ( (info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW) && info->xmit_cnt ) { - /* operating in synchronous (frame oriented) mode */ - /* copy data from circular xmit_buf to */ - /* transmit DMA buffer. */ - mgsl_load_tx_dma_buffer(info, - info->xmit_buf,info->xmit_cnt); - } - usc_start_transmitter(info); - } - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - -} /* end of mgsl_flush_chars() */ - -/* mgsl_write() - * - * Send a block of data - * - * Arguments: - * - * tty pointer to tty information structure - * buf pointer to buffer containing send data - * count size of send data in bytes - * - * Return Value: number of characters written - */ -static int mgsl_write(struct tty_struct * tty, - const unsigned char *buf, int count) -{ - int c, ret = 0; - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_write(%s) count=%d\n", - __FILE__,__LINE__,info->device_name,count); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_write")) - goto cleanup; - - if (!info->xmit_buf) - goto cleanup; - - if ( info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW ) { - /* operating in synchronous (frame oriented) mode */ - /* operating in synchronous (frame oriented) mode */ - if (info->tx_active) { - - if ( info->params.mode == MGSL_MODE_HDLC ) { - ret = 0; - goto cleanup; - } - /* transmitter is actively sending data - - * if we have multiple transmit dma and - * holding buffers, attempt to queue this - * frame for transmission at a later time. - */ - if (info->tx_holding_count >= info->num_tx_holding_buffers ) { - /* no tx holding buffers available */ - ret = 0; - goto cleanup; - } - - /* queue transmit frame request */ - ret = count; - save_tx_buffer_request(info,buf,count); - - /* if we have sufficient tx dma buffers, - * load the next buffered tx request - */ - spin_lock_irqsave(&info->irq_spinlock,flags); - load_next_tx_holding_buffer(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - goto cleanup; - } - - /* if operating in HDLC LoopMode and the adapter */ - /* has yet to be inserted into the loop, we can't */ - /* transmit */ - - if ( (info->params.flags & HDLC_FLAG_HDLC_LOOPMODE) && - !usc_loopmode_active(info) ) - { - ret = 0; - goto cleanup; - } - - if ( info->xmit_cnt ) { - /* Send accumulated from send_char() calls */ - /* as frame and wait before accepting more data. */ - ret = 0; - - /* copy data from circular xmit_buf to */ - /* transmit DMA buffer. */ - mgsl_load_tx_dma_buffer(info, - info->xmit_buf,info->xmit_cnt); - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_write(%s) sync xmit_cnt flushing\n", - __FILE__,__LINE__,info->device_name); - } else { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_write(%s) sync transmit accepted\n", - __FILE__,__LINE__,info->device_name); - ret = count; - info->xmit_cnt = count; - mgsl_load_tx_dma_buffer(info,buf,count); - } - } else { - while (1) { - spin_lock_irqsave(&info->irq_spinlock,flags); - c = min_t(int, count, - min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, - SERIAL_XMIT_SIZE - info->xmit_head)); - if (c <= 0) { - spin_unlock_irqrestore(&info->irq_spinlock,flags); - break; - } - memcpy(info->xmit_buf + info->xmit_head, buf, c); - info->xmit_head = ((info->xmit_head + c) & - (SERIAL_XMIT_SIZE-1)); - info->xmit_cnt += c; - spin_unlock_irqrestore(&info->irq_spinlock,flags); - buf += c; - count -= c; - ret += c; - } - } - - if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { - spin_lock_irqsave(&info->irq_spinlock,flags); - if (!info->tx_active) - usc_start_transmitter(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } -cleanup: - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_write(%s) returning=%d\n", - __FILE__,__LINE__,info->device_name,ret); - - return ret; - -} /* end of mgsl_write() */ - -/* mgsl_write_room() - * - * Return the count of free bytes in transmit buffer - * - * Arguments: tty pointer to tty info structure - * Return Value: None - */ -static int mgsl_write_room(struct tty_struct *tty) -{ - struct mgsl_struct *info = tty->driver_data; - int ret; - - if (mgsl_paranoia_check(info, tty->name, "mgsl_write_room")) - return 0; - ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; - if (ret < 0) - ret = 0; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_write_room(%s)=%d\n", - __FILE__,__LINE__, info->device_name,ret ); - - if ( info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW ) { - /* operating in synchronous (frame oriented) mode */ - if ( info->tx_active ) - return 0; - else - return HDLC_MAX_FRAME_SIZE; - } - - return ret; - -} /* end of mgsl_write_room() */ - -/* mgsl_chars_in_buffer() - * - * Return the count of bytes in transmit buffer - * - * Arguments: tty pointer to tty info structure - * Return Value: None - */ -static int mgsl_chars_in_buffer(struct tty_struct *tty) -{ - struct mgsl_struct *info = tty->driver_data; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_chars_in_buffer(%s)\n", - __FILE__,__LINE__, info->device_name ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_chars_in_buffer")) - return 0; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_chars_in_buffer(%s)=%d\n", - __FILE__,__LINE__, info->device_name,info->xmit_cnt ); - - if ( info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW ) { - /* operating in synchronous (frame oriented) mode */ - if ( info->tx_active ) - return info->max_frame_size; - else - return 0; - } - - return info->xmit_cnt; -} /* end of mgsl_chars_in_buffer() */ - -/* mgsl_flush_buffer() - * - * Discard all data in the send buffer - * - * Arguments: tty pointer to tty info structure - * Return Value: None - */ -static void mgsl_flush_buffer(struct tty_struct *tty) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_flush_buffer(%s) entry\n", - __FILE__,__LINE__, info->device_name ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_flush_buffer")) - return; - - spin_lock_irqsave(&info->irq_spinlock,flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - del_timer(&info->tx_timer); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - tty_wakeup(tty); -} - -/* mgsl_send_xchar() - * - * Send a high-priority XON/XOFF character - * - * Arguments: tty pointer to tty info structure - * ch character to send - * Return Value: None - */ -static void mgsl_send_xchar(struct tty_struct *tty, char ch) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_send_xchar(%s,%d)\n", - __FILE__,__LINE__, info->device_name, ch ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_send_xchar")) - return; - - info->x_char = ch; - if (ch) { - /* Make sure transmit interrupts are on */ - spin_lock_irqsave(&info->irq_spinlock,flags); - if (!info->tx_enabled) - usc_start_transmitter(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } -} /* end of mgsl_send_xchar() */ - -/* mgsl_throttle() - * - * Signal remote device to throttle send data (our receive data) - * - * Arguments: tty pointer to tty info structure - * Return Value: None - */ -static void mgsl_throttle(struct tty_struct * tty) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_throttle(%s) entry\n", - __FILE__,__LINE__, info->device_name ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_throttle")) - return; - - if (I_IXOFF(tty)) - mgsl_send_xchar(tty, STOP_CHAR(tty)); - - if (tty->termios->c_cflag & CRTSCTS) { - spin_lock_irqsave(&info->irq_spinlock,flags); - info->serial_signals &= ~SerialSignal_RTS; - usc_set_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } -} /* end of mgsl_throttle() */ - -/* mgsl_unthrottle() - * - * Signal remote device to stop throttling send data (our receive data) - * - * Arguments: tty pointer to tty info structure - * Return Value: None - */ -static void mgsl_unthrottle(struct tty_struct * tty) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_unthrottle(%s) entry\n", - __FILE__,__LINE__, info->device_name ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_unthrottle")) - return; - - if (I_IXOFF(tty)) { - if (info->x_char) - info->x_char = 0; - else - mgsl_send_xchar(tty, START_CHAR(tty)); - } - - if (tty->termios->c_cflag & CRTSCTS) { - spin_lock_irqsave(&info->irq_spinlock,flags); - info->serial_signals |= SerialSignal_RTS; - usc_set_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } - -} /* end of mgsl_unthrottle() */ - -/* mgsl_get_stats() - * - * get the current serial parameters information - * - * Arguments: info pointer to device instance data - * user_icount pointer to buffer to hold returned stats - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount __user *user_icount) -{ - int err; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_get_params(%s)\n", - __FILE__,__LINE__, info->device_name); - - if (!user_icount) { - memset(&info->icount, 0, sizeof(info->icount)); - } else { - mutex_lock(&info->port.mutex); - COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount)); - mutex_unlock(&info->port.mutex); - if (err) - return -EFAULT; - } - - return 0; - -} /* end of mgsl_get_stats() */ - -/* mgsl_get_params() - * - * get the current serial parameters information - * - * Arguments: info pointer to device instance data - * user_params pointer to buffer to hold returned params - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_get_params(struct mgsl_struct * info, MGSL_PARAMS __user *user_params) -{ - int err; - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_get_params(%s)\n", - __FILE__,__LINE__, info->device_name); - - mutex_lock(&info->port.mutex); - COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS)); - mutex_unlock(&info->port.mutex); - if (err) { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_get_params(%s) user buffer copy failed\n", - __FILE__,__LINE__,info->device_name); - return -EFAULT; - } - - return 0; - -} /* end of mgsl_get_params() */ - -/* mgsl_set_params() - * - * set the serial parameters - * - * Arguments: - * - * info pointer to device instance data - * new_params user buffer containing new serial params - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_set_params(struct mgsl_struct * info, MGSL_PARAMS __user *new_params) -{ - unsigned long flags; - MGSL_PARAMS tmp_params; - int err; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_set_params %s\n", __FILE__,__LINE__, - info->device_name ); - COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS)); - if (err) { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_set_params(%s) user buffer copy failed\n", - __FILE__,__LINE__,info->device_name); - return -EFAULT; - } - - mutex_lock(&info->port.mutex); - spin_lock_irqsave(&info->irq_spinlock,flags); - memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - mgsl_change_params(info); - mutex_unlock(&info->port.mutex); - - return 0; - -} /* end of mgsl_set_params() */ - -/* mgsl_get_txidle() - * - * get the current transmit idle mode - * - * Arguments: info pointer to device instance data - * idle_mode pointer to buffer to hold returned idle mode - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_get_txidle(struct mgsl_struct * info, int __user *idle_mode) -{ - int err; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_get_txidle(%s)=%d\n", - __FILE__,__LINE__, info->device_name, info->idle_mode); - - COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int)); - if (err) { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_get_txidle(%s) user buffer copy failed\n", - __FILE__,__LINE__,info->device_name); - return -EFAULT; - } - - return 0; - -} /* end of mgsl_get_txidle() */ - -/* mgsl_set_txidle() service ioctl to set transmit idle mode - * - * Arguments: info pointer to device instance data - * idle_mode new idle mode - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_set_txidle(struct mgsl_struct * info, int idle_mode) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_set_txidle(%s,%d)\n", __FILE__,__LINE__, - info->device_name, idle_mode ); - - spin_lock_irqsave(&info->irq_spinlock,flags); - info->idle_mode = idle_mode; - usc_set_txidle( info ); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - return 0; - -} /* end of mgsl_set_txidle() */ - -/* mgsl_txenable() - * - * enable or disable the transmitter - * - * Arguments: - * - * info pointer to device instance data - * enable 1 = enable, 0 = disable - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_txenable(struct mgsl_struct * info, int enable) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_txenable(%s,%d)\n", __FILE__,__LINE__, - info->device_name, enable); - - spin_lock_irqsave(&info->irq_spinlock,flags); - if ( enable ) { - if ( !info->tx_enabled ) { - - usc_start_transmitter(info); - /*-------------------------------------------------- - * if HDLC/SDLC Loop mode, attempt to insert the - * station in the 'loop' by setting CMR:13. Upon - * receipt of the next GoAhead (RxAbort) sequence, - * the OnLoop indicator (CCSR:7) should go active - * to indicate that we are on the loop - *--------------------------------------------------*/ - if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) - usc_loopmode_insert_request( info ); - } - } else { - if ( info->tx_enabled ) - usc_stop_transmitter(info); - } - spin_unlock_irqrestore(&info->irq_spinlock,flags); - return 0; - -} /* end of mgsl_txenable() */ - -/* mgsl_txabort() abort send HDLC frame - * - * Arguments: info pointer to device instance data - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_txabort(struct mgsl_struct * info) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_txabort(%s)\n", __FILE__,__LINE__, - info->device_name); - - spin_lock_irqsave(&info->irq_spinlock,flags); - if ( info->tx_active && info->params.mode == MGSL_MODE_HDLC ) - { - if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) - usc_loopmode_cancel_transmit( info ); - else - usc_TCmd(info,TCmd_SendAbort); - } - spin_unlock_irqrestore(&info->irq_spinlock,flags); - return 0; - -} /* end of mgsl_txabort() */ - -/* mgsl_rxenable() enable or disable the receiver - * - * Arguments: info pointer to device instance data - * enable 1 = enable, 0 = disable - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_rxenable(struct mgsl_struct * info, int enable) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_rxenable(%s,%d)\n", __FILE__,__LINE__, - info->device_name, enable); - - spin_lock_irqsave(&info->irq_spinlock,flags); - if ( enable ) { - if ( !info->rx_enabled ) - usc_start_receiver(info); - } else { - if ( info->rx_enabled ) - usc_stop_receiver(info); - } - spin_unlock_irqrestore(&info->irq_spinlock,flags); - return 0; - -} /* end of mgsl_rxenable() */ - -/* mgsl_wait_event() wait for specified event to occur - * - * Arguments: info pointer to device instance data - * mask pointer to bitmask of events to wait for - * Return Value: 0 if successful and bit mask updated with - * of events triggerred, - * otherwise error code - */ -static int mgsl_wait_event(struct mgsl_struct * info, int __user * mask_ptr) -{ - unsigned long flags; - int s; - int rc=0; - struct mgsl_icount cprev, cnow; - int events; - int mask; - struct _input_signal_events oldsigs, newsigs; - DECLARE_WAITQUEUE(wait, current); - - COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int)); - if (rc) { - return -EFAULT; - } - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_wait_event(%s,%d)\n", __FILE__,__LINE__, - info->device_name, mask); - - spin_lock_irqsave(&info->irq_spinlock,flags); - - /* return immediately if state matches requested events */ - usc_get_serial_signals(info); - s = info->serial_signals; - events = mask & - ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + - ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + - ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + - ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); - if (events) { - spin_unlock_irqrestore(&info->irq_spinlock,flags); - goto exit; - } - - /* save current irq counts */ - cprev = info->icount; - oldsigs = info->input_signal_events; - - /* enable hunt and idle irqs if needed */ - if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { - u16 oldreg = usc_InReg(info,RICR); - u16 newreg = oldreg + - (mask & MgslEvent_ExitHuntMode ? RXSTATUS_EXITED_HUNT:0) + - (mask & MgslEvent_IdleReceived ? RXSTATUS_IDLE_RECEIVED:0); - if (oldreg != newreg) - usc_OutReg(info, RICR, newreg); - } - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&info->event_wait_q, &wait); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - - for(;;) { - schedule(); - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - - /* get current irq counts */ - spin_lock_irqsave(&info->irq_spinlock,flags); - cnow = info->icount; - newsigs = info->input_signal_events; - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - /* if no change, wait aborted for some reason */ - if (newsigs.dsr_up == oldsigs.dsr_up && - newsigs.dsr_down == oldsigs.dsr_down && - newsigs.dcd_up == oldsigs.dcd_up && - newsigs.dcd_down == oldsigs.dcd_down && - newsigs.cts_up == oldsigs.cts_up && - newsigs.cts_down == oldsigs.cts_down && - newsigs.ri_up == oldsigs.ri_up && - newsigs.ri_down == oldsigs.ri_down && - cnow.exithunt == cprev.exithunt && - cnow.rxidle == cprev.rxidle) { - rc = -EIO; - break; - } - - events = mask & - ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + - (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + - (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + - (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + - (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + - (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + - (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + - (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + - (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + - (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); - if (events) - break; - - cprev = cnow; - oldsigs = newsigs; - } - - remove_wait_queue(&info->event_wait_q, &wait); - set_current_state(TASK_RUNNING); - - if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { - spin_lock_irqsave(&info->irq_spinlock,flags); - if (!waitqueue_active(&info->event_wait_q)) { - /* disable enable exit hunt mode/idle rcvd IRQs */ - usc_OutReg(info, RICR, usc_InReg(info,RICR) & - ~(RXSTATUS_EXITED_HUNT + RXSTATUS_IDLE_RECEIVED)); - } - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } -exit: - if ( rc == 0 ) - PUT_USER(rc, events, mask_ptr); - - return rc; - -} /* end of mgsl_wait_event() */ - -static int modem_input_wait(struct mgsl_struct *info,int arg) -{ - unsigned long flags; - int rc; - struct mgsl_icount cprev, cnow; - DECLARE_WAITQUEUE(wait, current); - - /* save current irq counts */ - spin_lock_irqsave(&info->irq_spinlock,flags); - cprev = info->icount; - add_wait_queue(&info->status_event_wait_q, &wait); - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - for(;;) { - schedule(); - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - - /* get new irq counts */ - spin_lock_irqsave(&info->irq_spinlock,flags); - cnow = info->icount; - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - /* if no change, wait aborted for some reason */ - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { - rc = -EIO; - break; - } - - /* check for change in caller specified modem input */ - if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || - (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || - (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || - (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { - rc = 0; - break; - } - - cprev = cnow; - } - remove_wait_queue(&info->status_event_wait_q, &wait); - set_current_state(TASK_RUNNING); - return rc; -} - -/* return the state of the serial control and status signals - */ -static int tiocmget(struct tty_struct *tty) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned int result; - unsigned long flags; - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_get_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) + - ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) + - ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) + - ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) + - ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) + - ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0); - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s tiocmget() value=%08X\n", - __FILE__,__LINE__, info->device_name, result ); - return result; -} - -/* set modem control signals (DTR/RTS) - */ -static int tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s tiocmset(%x,%x)\n", - __FILE__,__LINE__,info->device_name, set, clear); - - if (set & TIOCM_RTS) - info->serial_signals |= SerialSignal_RTS; - if (set & TIOCM_DTR) - info->serial_signals |= SerialSignal_DTR; - if (clear & TIOCM_RTS) - info->serial_signals &= ~SerialSignal_RTS; - if (clear & TIOCM_DTR) - info->serial_signals &= ~SerialSignal_DTR; - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_set_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - return 0; -} - -/* mgsl_break() Set or clear transmit break condition - * - * Arguments: tty pointer to tty instance data - * break_state -1=set break condition, 0=clear - * Return Value: error code - */ -static int mgsl_break(struct tty_struct *tty, int break_state) -{ - struct mgsl_struct * info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_break(%s,%d)\n", - __FILE__,__LINE__, info->device_name, break_state); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_break")) - return -EINVAL; - - spin_lock_irqsave(&info->irq_spinlock,flags); - if (break_state == -1) - usc_OutReg(info,IOCR,(u16)(usc_InReg(info,IOCR) | BIT7)); - else - usc_OutReg(info,IOCR,(u16)(usc_InReg(info,IOCR) & ~BIT7)); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - return 0; - -} /* end of mgsl_break() */ - -/* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ -static int msgl_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) - -{ - struct mgsl_struct * info = tty->driver_data; - struct mgsl_icount cnow; /* kernel counter temps */ - unsigned long flags; - - spin_lock_irqsave(&info->irq_spinlock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->frame = cnow.frame; - icount->overrun = cnow.overrun; - icount->parity = cnow.parity; - icount->brk = cnow.brk; - icount->buf_overrun = cnow.buf_overrun; - return 0; -} - -/* mgsl_ioctl() Service an IOCTL request - * - * Arguments: - * - * tty pointer to tty instance data - * cmd IOCTL command code - * arg command argument/context - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct mgsl_struct * info = tty->driver_data; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_ioctl %s cmd=%08X\n", __FILE__,__LINE__, - info->device_name, cmd ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_ioctl")) - return -ENODEV; - - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT)) { - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - } - - return mgsl_ioctl_common(info, cmd, arg); -} - -static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigned long arg) -{ - void __user *argp = (void __user *)arg; - - switch (cmd) { - case MGSL_IOCGPARAMS: - return mgsl_get_params(info, argp); - case MGSL_IOCSPARAMS: - return mgsl_set_params(info, argp); - case MGSL_IOCGTXIDLE: - return mgsl_get_txidle(info, argp); - case MGSL_IOCSTXIDLE: - return mgsl_set_txidle(info,(int)arg); - case MGSL_IOCTXENABLE: - return mgsl_txenable(info,(int)arg); - case MGSL_IOCRXENABLE: - return mgsl_rxenable(info,(int)arg); - case MGSL_IOCTXABORT: - return mgsl_txabort(info); - case MGSL_IOCGSTATS: - return mgsl_get_stats(info, argp); - case MGSL_IOCWAITEVENT: - return mgsl_wait_event(info, argp); - case MGSL_IOCLOOPTXDONE: - return mgsl_loopmode_send_done(info); - /* Wait for modem input (DCD,RI,DSR,CTS) change - * as specified by mask in arg (TIOCM_RNG/DSR/CD/CTS) - */ - case TIOCMIWAIT: - return modem_input_wait(info,(int)arg); - - default: - return -ENOIOCTLCMD; - } - return 0; -} - -/* mgsl_set_termios() - * - * Set new termios settings - * - * Arguments: - * - * tty pointer to tty structure - * termios pointer to buffer to hold returned old termios - * - * Return Value: None - */ -static void mgsl_set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct mgsl_struct *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_set_termios %s\n", __FILE__,__LINE__, - tty->driver->name ); - - mgsl_change_params(info); - - /* Handle transition to B0 status */ - if (old_termios->c_cflag & CBAUD && - !(tty->termios->c_cflag & CBAUD)) { - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_set_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } - - /* Handle transition away from B0 status */ - if (!(old_termios->c_cflag & CBAUD) && - tty->termios->c_cflag & CBAUD) { - info->serial_signals |= SerialSignal_DTR; - if (!(tty->termios->c_cflag & CRTSCTS) || - !test_bit(TTY_THROTTLED, &tty->flags)) { - info->serial_signals |= SerialSignal_RTS; - } - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_set_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } - - /* Handle turning off CRTSCTS */ - if (old_termios->c_cflag & CRTSCTS && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - mgsl_start(tty); - } - -} /* end of mgsl_set_termios() */ - -/* mgsl_close() - * - * Called when port is closed. Wait for remaining data to be - * sent. Disable port and free resources. - * - * Arguments: - * - * tty pointer to open tty structure - * filp pointer to open file object - * - * Return Value: None - */ -static void mgsl_close(struct tty_struct *tty, struct file * filp) -{ - struct mgsl_struct * info = tty->driver_data; - - if (mgsl_paranoia_check(info, tty->name, "mgsl_close")) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_close(%s) entry, count=%d\n", - __FILE__,__LINE__, info->device_name, info->port.count); - - if (tty_port_close_start(&info->port, tty, filp) == 0) - goto cleanup; - - mutex_lock(&info->port.mutex); - if (info->port.flags & ASYNC_INITIALIZED) - mgsl_wait_until_sent(tty, info->timeout); - mgsl_flush_buffer(tty); - tty_ldisc_flush(tty); - shutdown(info); - mutex_unlock(&info->port.mutex); - - tty_port_close_end(&info->port, tty); - info->port.tty = NULL; -cleanup: - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__, - tty->driver->name, info->port.count); - -} /* end of mgsl_close() */ - -/* mgsl_wait_until_sent() - * - * Wait until the transmitter is empty. - * - * Arguments: - * - * tty pointer to tty info structure - * timeout time to wait for send completion - * - * Return Value: None - */ -static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout) -{ - struct mgsl_struct * info = tty->driver_data; - unsigned long orig_jiffies, char_time; - - if (!info ) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_wait_until_sent(%s) entry\n", - __FILE__,__LINE__, info->device_name ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_wait_until_sent")) - return; - - if (!(info->port.flags & ASYNC_INITIALIZED)) - goto exit; - - orig_jiffies = jiffies; - - /* Set check interval to 1/5 of estimated time to - * send a character, and make it at least 1. The check - * interval should also be less than the timeout. - * Note: use tight timings here to satisfy the NIST-PCTS. - */ - - if ( info->params.data_rate ) { - char_time = info->timeout/(32 * 5); - if (!char_time) - char_time++; - } else - char_time = 1; - - if (timeout) - char_time = min_t(unsigned long, char_time, timeout); - - if ( info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW ) { - while (info->tx_active) { - msleep_interruptible(jiffies_to_msecs(char_time)); - if (signal_pending(current)) - break; - if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; - } - } else { - while (!(usc_InReg(info,TCSR) & TXSTATUS_ALL_SENT) && - info->tx_enabled) { - msleep_interruptible(jiffies_to_msecs(char_time)); - if (signal_pending(current)) - break; - if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; - } - } - -exit: - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_wait_until_sent(%s) exit\n", - __FILE__,__LINE__, info->device_name ); - -} /* end of mgsl_wait_until_sent() */ - -/* mgsl_hangup() - * - * Called by tty_hangup() when a hangup is signaled. - * This is the same as to closing all open files for the port. - * - * Arguments: tty pointer to associated tty object - * Return Value: None - */ -static void mgsl_hangup(struct tty_struct *tty) -{ - struct mgsl_struct * info = tty->driver_data; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_hangup(%s)\n", - __FILE__,__LINE__, info->device_name ); - - if (mgsl_paranoia_check(info, tty->name, "mgsl_hangup")) - return; - - mgsl_flush_buffer(tty); - shutdown(info); - - info->port.count = 0; - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - info->port.tty = NULL; - - wake_up_interruptible(&info->port.open_wait); - -} /* end of mgsl_hangup() */ - -/* - * carrier_raised() - * - * Return true if carrier is raised - */ - -static int carrier_raised(struct tty_port *port) -{ - unsigned long flags; - struct mgsl_struct *info = container_of(port, struct mgsl_struct, port); - - spin_lock_irqsave(&info->irq_spinlock, flags); - usc_get_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock, flags); - return (info->serial_signals & SerialSignal_DCD) ? 1 : 0; -} - -static void dtr_rts(struct tty_port *port, int on) -{ - struct mgsl_struct *info = container_of(port, struct mgsl_struct, port); - unsigned long flags; - - spin_lock_irqsave(&info->irq_spinlock,flags); - if (on) - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - else - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - usc_set_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); -} - - -/* block_til_ready() - * - * Block the current process until the specified port - * is ready to be opened. - * - * Arguments: - * - * tty pointer to tty info structure - * filp pointer to open file object - * info pointer to device instance data - * - * Return Value: 0 if success, otherwise error code - */ -static int block_til_ready(struct tty_struct *tty, struct file * filp, - struct mgsl_struct *info) -{ - DECLARE_WAITQUEUE(wait, current); - int retval; - bool do_clocal = false; - bool extra_count = false; - unsigned long flags; - int dcd; - struct tty_port *port = &info->port; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready on %s\n", - __FILE__,__LINE__, tty->driver->name ); - - if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ - /* nonblock mode is set or port is not enabled */ - port->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - if (tty->termios->c_cflag & CLOCAL) - do_clocal = true; - - /* Wait for carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, port->count is dropped by one, so that - * mgsl_close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - - retval = 0; - add_wait_queue(&port->open_wait, &wait); - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready before block on %s count=%d\n", - __FILE__,__LINE__, tty->driver->name, port->count ); - - spin_lock_irqsave(&info->irq_spinlock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = true; - port->count--; - } - spin_unlock_irqrestore(&info->irq_spinlock, flags); - port->blocked_open++; - - while (1) { - if (tty->termios->c_cflag & CBAUD) - tty_port_raise_dtr_rts(port); - - set_current_state(TASK_INTERRUPTIBLE); - - if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){ - retval = (port->flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS; - break; - } - - dcd = tty_port_carrier_raised(&info->port); - - if (!(port->flags & ASYNC_CLOSING) && (do_clocal || dcd)) - break; - - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready blocking on %s count=%d\n", - __FILE__,__LINE__, tty->driver->name, port->count ); - - tty_unlock(); - schedule(); - tty_lock(); - } - - set_current_state(TASK_RUNNING); - remove_wait_queue(&port->open_wait, &wait); - - /* FIXME: Racy on hangup during close wait */ - if (extra_count) - port->count++; - port->blocked_open--; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready after blocking on %s count=%d\n", - __FILE__,__LINE__, tty->driver->name, port->count ); - - if (!retval) - port->flags |= ASYNC_NORMAL_ACTIVE; - - return retval; - -} /* end of block_til_ready() */ - -/* mgsl_open() - * - * Called when a port is opened. Init and enable port. - * Perform serial-specific initialization for the tty structure. - * - * Arguments: tty pointer to tty info structure - * filp associated file pointer - * - * Return Value: 0 if success, otherwise error code - */ -static int mgsl_open(struct tty_struct *tty, struct file * filp) -{ - struct mgsl_struct *info; - int retval, line; - unsigned long flags; - - /* verify range of specified line number */ - line = tty->index; - if ((line < 0) || (line >= mgsl_device_count)) { - printk("%s(%d):mgsl_open with invalid line #%d.\n", - __FILE__,__LINE__,line); - return -ENODEV; - } - - /* find the info structure for the specified line */ - info = mgsl_device_list; - while(info && info->line != line) - info = info->next_device; - if (mgsl_paranoia_check(info, tty->name, "mgsl_open")) - return -ENODEV; - - tty->driver_data = info; - info->port.tty = tty; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_open(%s), old ref count = %d\n", - __FILE__,__LINE__,tty->driver->name, info->port.count); - - /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ - if (info->port.flags & ASYNC_CLOSING) - interruptible_sleep_on(&info->port.close_wait); - retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); - goto cleanup; - } - - info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0; - - spin_lock_irqsave(&info->netlock, flags); - if (info->netcount) { - retval = -EBUSY; - spin_unlock_irqrestore(&info->netlock, flags); - goto cleanup; - } - info->port.count++; - spin_unlock_irqrestore(&info->netlock, flags); - - if (info->port.count == 1) { - /* 1st open on this device, init hardware */ - retval = startup(info); - if (retval < 0) - goto cleanup; - } - - retval = block_til_ready(tty, filp, info); - if (retval) { - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):block_til_ready(%s) returned %d\n", - __FILE__,__LINE__, info->device_name, retval); - goto cleanup; - } - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgsl_open(%s) success\n", - __FILE__,__LINE__, info->device_name); - retval = 0; - -cleanup: - if (retval) { - if (tty->count == 1) - info->port.tty = NULL; /* tty layer will release tty struct */ - if(info->port.count) - info->port.count--; - } - - return retval; - -} /* end of mgsl_open() */ - -/* - * /proc fs routines.... - */ - -static inline void line_info(struct seq_file *m, struct mgsl_struct *info) -{ - char stat_buf[30]; - unsigned long flags; - - if (info->bus_type == MGSL_BUS_TYPE_PCI) { - seq_printf(m, "%s:PCI io:%04X irq:%d mem:%08X lcr:%08X", - info->device_name, info->io_base, info->irq_level, - info->phys_memory_base, info->phys_lcr_base); - } else { - seq_printf(m, "%s:(E)ISA io:%04X irq:%d dma:%d", - info->device_name, info->io_base, - info->irq_level, info->dma_level); - } - - /* output current serial signal states */ - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_get_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - stat_buf[0] = 0; - stat_buf[1] = 0; - if (info->serial_signals & SerialSignal_RTS) - strcat(stat_buf, "|RTS"); - if (info->serial_signals & SerialSignal_CTS) - strcat(stat_buf, "|CTS"); - if (info->serial_signals & SerialSignal_DTR) - strcat(stat_buf, "|DTR"); - if (info->serial_signals & SerialSignal_DSR) - strcat(stat_buf, "|DSR"); - if (info->serial_signals & SerialSignal_DCD) - strcat(stat_buf, "|CD"); - if (info->serial_signals & SerialSignal_RI) - strcat(stat_buf, "|RI"); - - if (info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW ) { - seq_printf(m, " HDLC txok:%d rxok:%d", - info->icount.txok, info->icount.rxok); - if (info->icount.txunder) - seq_printf(m, " txunder:%d", info->icount.txunder); - if (info->icount.txabort) - seq_printf(m, " txabort:%d", info->icount.txabort); - if (info->icount.rxshort) - seq_printf(m, " rxshort:%d", info->icount.rxshort); - if (info->icount.rxlong) - seq_printf(m, " rxlong:%d", info->icount.rxlong); - if (info->icount.rxover) - seq_printf(m, " rxover:%d", info->icount.rxover); - if (info->icount.rxcrc) - seq_printf(m, " rxcrc:%d", info->icount.rxcrc); - } else { - seq_printf(m, " ASYNC tx:%d rx:%d", - info->icount.tx, info->icount.rx); - if (info->icount.frame) - seq_printf(m, " fe:%d", info->icount.frame); - if (info->icount.parity) - seq_printf(m, " pe:%d", info->icount.parity); - if (info->icount.brk) - seq_printf(m, " brk:%d", info->icount.brk); - if (info->icount.overrun) - seq_printf(m, " oe:%d", info->icount.overrun); - } - - /* Append serial signal status to end */ - seq_printf(m, " %s\n", stat_buf+1); - - seq_printf(m, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", - info->tx_active,info->bh_requested,info->bh_running, - info->pending_bh); - - spin_lock_irqsave(&info->irq_spinlock,flags); - { - u16 Tcsr = usc_InReg( info, TCSR ); - u16 Tdmr = usc_InDmaReg( info, TDMR ); - u16 Ticr = usc_InReg( info, TICR ); - u16 Rscr = usc_InReg( info, RCSR ); - u16 Rdmr = usc_InDmaReg( info, RDMR ); - u16 Ricr = usc_InReg( info, RICR ); - u16 Icr = usc_InReg( info, ICR ); - u16 Dccr = usc_InReg( info, DCCR ); - u16 Tmr = usc_InReg( info, TMR ); - u16 Tccr = usc_InReg( info, TCCR ); - u16 Ccar = inw( info->io_base + CCAR ); - seq_printf(m, "tcsr=%04X tdmr=%04X ticr=%04X rcsr=%04X rdmr=%04X\n" - "ricr=%04X icr =%04X dccr=%04X tmr=%04X tccr=%04X ccar=%04X\n", - Tcsr,Tdmr,Ticr,Rscr,Rdmr,Ricr,Icr,Dccr,Tmr,Tccr,Ccar ); - } - spin_unlock_irqrestore(&info->irq_spinlock,flags); -} - -/* Called to print information about devices */ -static int mgsl_proc_show(struct seq_file *m, void *v) -{ - struct mgsl_struct *info; - - seq_printf(m, "synclink driver:%s\n", driver_version); - - info = mgsl_device_list; - while( info ) { - line_info(m, info); - info = info->next_device; - } - return 0; -} - -static int mgsl_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, mgsl_proc_show, NULL); -} - -static const struct file_operations mgsl_proc_fops = { - .owner = THIS_MODULE, - .open = mgsl_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* mgsl_allocate_dma_buffers() - * - * Allocate and format DMA buffers (ISA adapter) - * or format shared memory buffers (PCI adapter). - * - * Arguments: info pointer to device instance data - * Return Value: 0 if success, otherwise error - */ -static int mgsl_allocate_dma_buffers(struct mgsl_struct *info) -{ - unsigned short BuffersPerFrame; - - info->last_mem_alloc = 0; - - /* Calculate the number of DMA buffers necessary to hold the */ - /* largest allowable frame size. Note: If the max frame size is */ - /* not an even multiple of the DMA buffer size then we need to */ - /* round the buffer count per frame up one. */ - - BuffersPerFrame = (unsigned short)(info->max_frame_size/DMABUFFERSIZE); - if ( info->max_frame_size % DMABUFFERSIZE ) - BuffersPerFrame++; - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - /* - * The PCI adapter has 256KBytes of shared memory to use. - * This is 64 PAGE_SIZE buffers. - * - * The first page is used for padding at this time so the - * buffer list does not begin at offset 0 of the PCI - * adapter's shared memory. - * - * The 2nd page is used for the buffer list. A 4K buffer - * list can hold 128 DMA_BUFFER structures at 32 bytes - * each. - * - * This leaves 62 4K pages. - * - * The next N pages are used for transmit frame(s). We - * reserve enough 4K page blocks to hold the required - * number of transmit dma buffers (num_tx_dma_buffers), - * each of MaxFrameSize size. - * - * Of the remaining pages (62-N), determine how many can - * be used to receive full MaxFrameSize inbound frames - */ - info->tx_buffer_count = info->num_tx_dma_buffers * BuffersPerFrame; - info->rx_buffer_count = 62 - info->tx_buffer_count; - } else { - /* Calculate the number of PAGE_SIZE buffers needed for */ - /* receive and transmit DMA buffers. */ - - - /* Calculate the number of DMA buffers necessary to */ - /* hold 7 max size receive frames and one max size transmit frame. */ - /* The receive buffer count is bumped by one so we avoid an */ - /* End of List condition if all receive buffers are used when */ - /* using linked list DMA buffers. */ - - info->tx_buffer_count = info->num_tx_dma_buffers * BuffersPerFrame; - info->rx_buffer_count = (BuffersPerFrame * MAXRXFRAMES) + 6; - - /* - * limit total TxBuffers & RxBuffers to 62 4K total - * (ala PCI Allocation) - */ - - if ( (info->tx_buffer_count + info->rx_buffer_count) > 62 ) - info->rx_buffer_count = 62 - info->tx_buffer_count; - - } - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("%s(%d):Allocating %d TX and %d RX DMA buffers.\n", - __FILE__,__LINE__, info->tx_buffer_count,info->rx_buffer_count); - - if ( mgsl_alloc_buffer_list_memory( info ) < 0 || - mgsl_alloc_frame_memory(info, info->rx_buffer_list, info->rx_buffer_count) < 0 || - mgsl_alloc_frame_memory(info, info->tx_buffer_list, info->tx_buffer_count) < 0 || - mgsl_alloc_intermediate_rxbuffer_memory(info) < 0 || - mgsl_alloc_intermediate_txbuffer_memory(info) < 0 ) { - printk("%s(%d):Can't allocate DMA buffer memory\n",__FILE__,__LINE__); - return -ENOMEM; - } - - mgsl_reset_rx_dma_buffers( info ); - mgsl_reset_tx_dma_buffers( info ); - - return 0; - -} /* end of mgsl_allocate_dma_buffers() */ - -/* - * mgsl_alloc_buffer_list_memory() - * - * Allocate a common DMA buffer for use as the - * receive and transmit buffer lists. - * - * A buffer list is a set of buffer entries where each entry contains - * a pointer to an actual buffer and a pointer to the next buffer entry - * (plus some other info about the buffer). - * - * The buffer entries for a list are built to form a circular list so - * that when the entire list has been traversed you start back at the - * beginning. - * - * This function allocates memory for just the buffer entries. - * The links (pointer to next entry) are filled in with the physical - * address of the next entry so the adapter can navigate the list - * using bus master DMA. The pointers to the actual buffers are filled - * out later when the actual buffers are allocated. - * - * Arguments: info pointer to device instance data - * Return Value: 0 if success, otherwise error - */ -static int mgsl_alloc_buffer_list_memory( struct mgsl_struct *info ) -{ - unsigned int i; - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - /* PCI adapter uses shared memory. */ - info->buffer_list = info->memory_base + info->last_mem_alloc; - info->buffer_list_phys = info->last_mem_alloc; - info->last_mem_alloc += BUFFERLISTSIZE; - } else { - /* ISA adapter uses system memory. */ - /* The buffer lists are allocated as a common buffer that both */ - /* the processor and adapter can access. This allows the driver to */ - /* inspect portions of the buffer while other portions are being */ - /* updated by the adapter using Bus Master DMA. */ - - info->buffer_list = dma_alloc_coherent(NULL, BUFFERLISTSIZE, &info->buffer_list_dma_addr, GFP_KERNEL); - if (info->buffer_list == NULL) - return -ENOMEM; - info->buffer_list_phys = (u32)(info->buffer_list_dma_addr); - } - - /* We got the memory for the buffer entry lists. */ - /* Initialize the memory block to all zeros. */ - memset( info->buffer_list, 0, BUFFERLISTSIZE ); - - /* Save virtual address pointers to the receive and */ - /* transmit buffer lists. (Receive 1st). These pointers will */ - /* be used by the processor to access the lists. */ - info->rx_buffer_list = (DMABUFFERENTRY *)info->buffer_list; - info->tx_buffer_list = (DMABUFFERENTRY *)info->buffer_list; - info->tx_buffer_list += info->rx_buffer_count; - - /* - * Build the links for the buffer entry lists such that - * two circular lists are built. (Transmit and Receive). - * - * Note: the links are physical addresses - * which are read by the adapter to determine the next - * buffer entry to use. - */ - - for ( i = 0; i < info->rx_buffer_count; i++ ) { - /* calculate and store physical address of this buffer entry */ - info->rx_buffer_list[i].phys_entry = - info->buffer_list_phys + (i * sizeof(DMABUFFERENTRY)); - - /* calculate and store physical address of */ - /* next entry in cirular list of entries */ - - info->rx_buffer_list[i].link = info->buffer_list_phys; - - if ( i < info->rx_buffer_count - 1 ) - info->rx_buffer_list[i].link += (i + 1) * sizeof(DMABUFFERENTRY); - } - - for ( i = 0; i < info->tx_buffer_count; i++ ) { - /* calculate and store physical address of this buffer entry */ - info->tx_buffer_list[i].phys_entry = info->buffer_list_phys + - ((info->rx_buffer_count + i) * sizeof(DMABUFFERENTRY)); - - /* calculate and store physical address of */ - /* next entry in cirular list of entries */ - - info->tx_buffer_list[i].link = info->buffer_list_phys + - info->rx_buffer_count * sizeof(DMABUFFERENTRY); - - if ( i < info->tx_buffer_count - 1 ) - info->tx_buffer_list[i].link += (i + 1) * sizeof(DMABUFFERENTRY); - } - - return 0; - -} /* end of mgsl_alloc_buffer_list_memory() */ - -/* Free DMA buffers allocated for use as the - * receive and transmit buffer lists. - * Warning: - * - * The data transfer buffers associated with the buffer list - * MUST be freed before freeing the buffer list itself because - * the buffer list contains the information necessary to free - * the individual buffers! - */ -static void mgsl_free_buffer_list_memory( struct mgsl_struct *info ) -{ - if (info->buffer_list && info->bus_type != MGSL_BUS_TYPE_PCI) - dma_free_coherent(NULL, BUFFERLISTSIZE, info->buffer_list, info->buffer_list_dma_addr); - - info->buffer_list = NULL; - info->rx_buffer_list = NULL; - info->tx_buffer_list = NULL; - -} /* end of mgsl_free_buffer_list_memory() */ - -/* - * mgsl_alloc_frame_memory() - * - * Allocate the frame DMA buffers used by the specified buffer list. - * Each DMA buffer will be one memory page in size. This is necessary - * because memory can fragment enough that it may be impossible - * contiguous pages. - * - * Arguments: - * - * info pointer to device instance data - * BufferList pointer to list of buffer entries - * Buffercount count of buffer entries in buffer list - * - * Return Value: 0 if success, otherwise -ENOMEM - */ -static int mgsl_alloc_frame_memory(struct mgsl_struct *info,DMABUFFERENTRY *BufferList,int Buffercount) -{ - int i; - u32 phys_addr; - - /* Allocate page sized buffers for the receive buffer list */ - - for ( i = 0; i < Buffercount; i++ ) { - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - /* PCI adapter uses shared memory buffers. */ - BufferList[i].virt_addr = info->memory_base + info->last_mem_alloc; - phys_addr = info->last_mem_alloc; - info->last_mem_alloc += DMABUFFERSIZE; - } else { - /* ISA adapter uses system memory. */ - BufferList[i].virt_addr = dma_alloc_coherent(NULL, DMABUFFERSIZE, &BufferList[i].dma_addr, GFP_KERNEL); - if (BufferList[i].virt_addr == NULL) - return -ENOMEM; - phys_addr = (u32)(BufferList[i].dma_addr); - } - BufferList[i].phys_addr = phys_addr; - } - - return 0; - -} /* end of mgsl_alloc_frame_memory() */ - -/* - * mgsl_free_frame_memory() - * - * Free the buffers associated with - * each buffer entry of a buffer list. - * - * Arguments: - * - * info pointer to device instance data - * BufferList pointer to list of buffer entries - * Buffercount count of buffer entries in buffer list - * - * Return Value: None - */ -static void mgsl_free_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList, int Buffercount) -{ - int i; - - if ( BufferList ) { - for ( i = 0 ; i < Buffercount ; i++ ) { - if ( BufferList[i].virt_addr ) { - if ( info->bus_type != MGSL_BUS_TYPE_PCI ) - dma_free_coherent(NULL, DMABUFFERSIZE, BufferList[i].virt_addr, BufferList[i].dma_addr); - BufferList[i].virt_addr = NULL; - } - } - } - -} /* end of mgsl_free_frame_memory() */ - -/* mgsl_free_dma_buffers() - * - * Free DMA buffers - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_free_dma_buffers( struct mgsl_struct *info ) -{ - mgsl_free_frame_memory( info, info->rx_buffer_list, info->rx_buffer_count ); - mgsl_free_frame_memory( info, info->tx_buffer_list, info->tx_buffer_count ); - mgsl_free_buffer_list_memory( info ); - -} /* end of mgsl_free_dma_buffers() */ - - -/* - * mgsl_alloc_intermediate_rxbuffer_memory() - * - * Allocate a buffer large enough to hold max_frame_size. This buffer - * is used to pass an assembled frame to the line discipline. - * - * Arguments: - * - * info pointer to device instance data - * - * Return Value: 0 if success, otherwise -ENOMEM - */ -static int mgsl_alloc_intermediate_rxbuffer_memory(struct mgsl_struct *info) -{ - info->intermediate_rxbuffer = kmalloc(info->max_frame_size, GFP_KERNEL | GFP_DMA); - if ( info->intermediate_rxbuffer == NULL ) - return -ENOMEM; - - return 0; - -} /* end of mgsl_alloc_intermediate_rxbuffer_memory() */ - -/* - * mgsl_free_intermediate_rxbuffer_memory() - * - * - * Arguments: - * - * info pointer to device instance data - * - * Return Value: None - */ -static void mgsl_free_intermediate_rxbuffer_memory(struct mgsl_struct *info) -{ - kfree(info->intermediate_rxbuffer); - info->intermediate_rxbuffer = NULL; - -} /* end of mgsl_free_intermediate_rxbuffer_memory() */ - -/* - * mgsl_alloc_intermediate_txbuffer_memory() - * - * Allocate intermdiate transmit buffer(s) large enough to hold max_frame_size. - * This buffer is used to load transmit frames into the adapter's dma transfer - * buffers when there is sufficient space. - * - * Arguments: - * - * info pointer to device instance data - * - * Return Value: 0 if success, otherwise -ENOMEM - */ -static int mgsl_alloc_intermediate_txbuffer_memory(struct mgsl_struct *info) -{ - int i; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("%s %s(%d) allocating %d tx holding buffers\n", - info->device_name, __FILE__,__LINE__,info->num_tx_holding_buffers); - - memset(info->tx_holding_buffers,0,sizeof(info->tx_holding_buffers)); - - for ( i=0; inum_tx_holding_buffers; ++i) { - info->tx_holding_buffers[i].buffer = - kmalloc(info->max_frame_size, GFP_KERNEL); - if (info->tx_holding_buffers[i].buffer == NULL) { - for (--i; i >= 0; i--) { - kfree(info->tx_holding_buffers[i].buffer); - info->tx_holding_buffers[i].buffer = NULL; - } - return -ENOMEM; - } - } - - return 0; - -} /* end of mgsl_alloc_intermediate_txbuffer_memory() */ - -/* - * mgsl_free_intermediate_txbuffer_memory() - * - * - * Arguments: - * - * info pointer to device instance data - * - * Return Value: None - */ -static void mgsl_free_intermediate_txbuffer_memory(struct mgsl_struct *info) -{ - int i; - - for ( i=0; inum_tx_holding_buffers; ++i ) { - kfree(info->tx_holding_buffers[i].buffer); - info->tx_holding_buffers[i].buffer = NULL; - } - - info->get_tx_holding_index = 0; - info->put_tx_holding_index = 0; - info->tx_holding_count = 0; - -} /* end of mgsl_free_intermediate_txbuffer_memory() */ - - -/* - * load_next_tx_holding_buffer() - * - * attempts to load the next buffered tx request into the - * tx dma buffers - * - * Arguments: - * - * info pointer to device instance data - * - * Return Value: true if next buffered tx request loaded - * into adapter's tx dma buffer, - * false otherwise - */ -static bool load_next_tx_holding_buffer(struct mgsl_struct *info) -{ - bool ret = false; - - if ( info->tx_holding_count ) { - /* determine if we have enough tx dma buffers - * to accommodate the next tx frame - */ - struct tx_holding_buffer *ptx = - &info->tx_holding_buffers[info->get_tx_holding_index]; - int num_free = num_free_tx_dma_buffers(info); - int num_needed = ptx->buffer_size / DMABUFFERSIZE; - if ( ptx->buffer_size % DMABUFFERSIZE ) - ++num_needed; - - if (num_needed <= num_free) { - info->xmit_cnt = ptx->buffer_size; - mgsl_load_tx_dma_buffer(info,ptx->buffer,ptx->buffer_size); - - --info->tx_holding_count; - if ( ++info->get_tx_holding_index >= info->num_tx_holding_buffers) - info->get_tx_holding_index=0; - - /* restart transmit timer */ - mod_timer(&info->tx_timer, jiffies + msecs_to_jiffies(5000)); - - ret = true; - } - } - - return ret; -} - -/* - * save_tx_buffer_request() - * - * attempt to store transmit frame request for later transmission - * - * Arguments: - * - * info pointer to device instance data - * Buffer pointer to buffer containing frame to load - * BufferSize size in bytes of frame in Buffer - * - * Return Value: 1 if able to store, 0 otherwise - */ -static int save_tx_buffer_request(struct mgsl_struct *info,const char *Buffer, unsigned int BufferSize) -{ - struct tx_holding_buffer *ptx; - - if ( info->tx_holding_count >= info->num_tx_holding_buffers ) { - return 0; /* all buffers in use */ - } - - ptx = &info->tx_holding_buffers[info->put_tx_holding_index]; - ptx->buffer_size = BufferSize; - memcpy( ptx->buffer, Buffer, BufferSize); - - ++info->tx_holding_count; - if ( ++info->put_tx_holding_index >= info->num_tx_holding_buffers) - info->put_tx_holding_index=0; - - return 1; -} - -static int mgsl_claim_resources(struct mgsl_struct *info) -{ - if (request_region(info->io_base,info->io_addr_size,"synclink") == NULL) { - printk( "%s(%d):I/O address conflict on device %s Addr=%08X\n", - __FILE__,__LINE__,info->device_name, info->io_base); - return -ENODEV; - } - info->io_addr_requested = true; - - if ( request_irq(info->irq_level,mgsl_interrupt,info->irq_flags, - info->device_name, info ) < 0 ) { - printk( "%s(%d):Cant request interrupt on device %s IRQ=%d\n", - __FILE__,__LINE__,info->device_name, info->irq_level ); - goto errout; - } - info->irq_requested = true; - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - if (request_mem_region(info->phys_memory_base,0x40000,"synclink") == NULL) { - printk( "%s(%d):mem addr conflict device %s Addr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_memory_base); - goto errout; - } - info->shared_mem_requested = true; - if (request_mem_region(info->phys_lcr_base + info->lcr_offset,128,"synclink") == NULL) { - printk( "%s(%d):lcr mem addr conflict device %s Addr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_lcr_base + info->lcr_offset); - goto errout; - } - info->lcr_mem_requested = true; - - info->memory_base = ioremap_nocache(info->phys_memory_base, - 0x40000); - if (!info->memory_base) { - printk( "%s(%d):Cant map shared memory on device %s MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_memory_base ); - goto errout; - } - - if ( !mgsl_memory_test(info) ) { - printk( "%s(%d):Failed shared memory test %s MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_memory_base ); - goto errout; - } - - info->lcr_base = ioremap_nocache(info->phys_lcr_base, - PAGE_SIZE); - if (!info->lcr_base) { - printk( "%s(%d):Cant map LCR memory on device %s MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_lcr_base ); - goto errout; - } - info->lcr_base += info->lcr_offset; - - } else { - /* claim DMA channel */ - - if (request_dma(info->dma_level,info->device_name) < 0){ - printk( "%s(%d):Cant request DMA channel on device %s DMA=%d\n", - __FILE__,__LINE__,info->device_name, info->dma_level ); - mgsl_release_resources( info ); - return -ENODEV; - } - info->dma_requested = true; - - /* ISA adapter uses bus master DMA */ - set_dma_mode(info->dma_level,DMA_MODE_CASCADE); - enable_dma(info->dma_level); - } - - if ( mgsl_allocate_dma_buffers(info) < 0 ) { - printk( "%s(%d):Cant allocate DMA buffers on device %s DMA=%d\n", - __FILE__,__LINE__,info->device_name, info->dma_level ); - goto errout; - } - - return 0; -errout: - mgsl_release_resources(info); - return -ENODEV; - -} /* end of mgsl_claim_resources() */ - -static void mgsl_release_resources(struct mgsl_struct *info) -{ - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_release_resources(%s) entry\n", - __FILE__,__LINE__,info->device_name ); - - if ( info->irq_requested ) { - free_irq(info->irq_level, info); - info->irq_requested = false; - } - if ( info->dma_requested ) { - disable_dma(info->dma_level); - free_dma(info->dma_level); - info->dma_requested = false; - } - mgsl_free_dma_buffers(info); - mgsl_free_intermediate_rxbuffer_memory(info); - mgsl_free_intermediate_txbuffer_memory(info); - - if ( info->io_addr_requested ) { - release_region(info->io_base,info->io_addr_size); - info->io_addr_requested = false; - } - if ( info->shared_mem_requested ) { - release_mem_region(info->phys_memory_base,0x40000); - info->shared_mem_requested = false; - } - if ( info->lcr_mem_requested ) { - release_mem_region(info->phys_lcr_base + info->lcr_offset,128); - info->lcr_mem_requested = false; - } - if (info->memory_base){ - iounmap(info->memory_base); - info->memory_base = NULL; - } - if (info->lcr_base){ - iounmap(info->lcr_base - info->lcr_offset); - info->lcr_base = NULL; - } - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_release_resources(%s) exit\n", - __FILE__,__LINE__,info->device_name ); - -} /* end of mgsl_release_resources() */ - -/* mgsl_add_device() - * - * Add the specified device instance data structure to the - * global linked list of devices and increment the device count. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_add_device( struct mgsl_struct *info ) -{ - info->next_device = NULL; - info->line = mgsl_device_count; - sprintf(info->device_name,"ttySL%d",info->line); - - if (info->line < MAX_TOTAL_DEVICES) { - if (maxframe[info->line]) - info->max_frame_size = maxframe[info->line]; - - if (txdmabufs[info->line]) { - info->num_tx_dma_buffers = txdmabufs[info->line]; - if (info->num_tx_dma_buffers < 1) - info->num_tx_dma_buffers = 1; - } - - if (txholdbufs[info->line]) { - info->num_tx_holding_buffers = txholdbufs[info->line]; - if (info->num_tx_holding_buffers < 1) - info->num_tx_holding_buffers = 1; - else if (info->num_tx_holding_buffers > MAX_TX_HOLDING_BUFFERS) - info->num_tx_holding_buffers = MAX_TX_HOLDING_BUFFERS; - } - } - - mgsl_device_count++; - - if ( !mgsl_device_list ) - mgsl_device_list = info; - else { - struct mgsl_struct *current_dev = mgsl_device_list; - while( current_dev->next_device ) - current_dev = current_dev->next_device; - current_dev->next_device = info; - } - - if ( info->max_frame_size < 4096 ) - info->max_frame_size = 4096; - else if ( info->max_frame_size > 65535 ) - info->max_frame_size = 65535; - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - printk( "SyncLink PCI v%d %s: IO=%04X IRQ=%d Mem=%08X,%08X MaxFrameSize=%u\n", - info->hw_version + 1, info->device_name, info->io_base, info->irq_level, - info->phys_memory_base, info->phys_lcr_base, - info->max_frame_size ); - } else { - printk( "SyncLink ISA %s: IO=%04X IRQ=%d DMA=%d MaxFrameSize=%u\n", - info->device_name, info->io_base, info->irq_level, info->dma_level, - info->max_frame_size ); - } - -#if SYNCLINK_GENERIC_HDLC - hdlcdev_init(info); -#endif - -} /* end of mgsl_add_device() */ - -static const struct tty_port_operations mgsl_port_ops = { - .carrier_raised = carrier_raised, - .dtr_rts = dtr_rts, -}; - - -/* mgsl_allocate_device() - * - * Allocate and initialize a device instance structure - * - * Arguments: none - * Return Value: pointer to mgsl_struct if success, otherwise NULL - */ -static struct mgsl_struct* mgsl_allocate_device(void) -{ - struct mgsl_struct *info; - - info = kzalloc(sizeof(struct mgsl_struct), - GFP_KERNEL); - - if (!info) { - printk("Error can't allocate device instance data\n"); - } else { - tty_port_init(&info->port); - info->port.ops = &mgsl_port_ops; - info->magic = MGSL_MAGIC; - INIT_WORK(&info->task, mgsl_bh_handler); - info->max_frame_size = 4096; - info->port.close_delay = 5*HZ/10; - info->port.closing_wait = 30*HZ; - init_waitqueue_head(&info->status_event_wait_q); - init_waitqueue_head(&info->event_wait_q); - spin_lock_init(&info->irq_spinlock); - spin_lock_init(&info->netlock); - memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); - info->idle_mode = HDLC_TXIDLE_FLAGS; - info->num_tx_dma_buffers = 1; - info->num_tx_holding_buffers = 0; - } - - return info; - -} /* end of mgsl_allocate_device()*/ - -static const struct tty_operations mgsl_ops = { - .open = mgsl_open, - .close = mgsl_close, - .write = mgsl_write, - .put_char = mgsl_put_char, - .flush_chars = mgsl_flush_chars, - .write_room = mgsl_write_room, - .chars_in_buffer = mgsl_chars_in_buffer, - .flush_buffer = mgsl_flush_buffer, - .ioctl = mgsl_ioctl, - .throttle = mgsl_throttle, - .unthrottle = mgsl_unthrottle, - .send_xchar = mgsl_send_xchar, - .break_ctl = mgsl_break, - .wait_until_sent = mgsl_wait_until_sent, - .set_termios = mgsl_set_termios, - .stop = mgsl_stop, - .start = mgsl_start, - .hangup = mgsl_hangup, - .tiocmget = tiocmget, - .tiocmset = tiocmset, - .get_icount = msgl_get_icount, - .proc_fops = &mgsl_proc_fops, -}; - -/* - * perform tty device initialization - */ -static int mgsl_init_tty(void) -{ - int rc; - - serial_driver = alloc_tty_driver(128); - if (!serial_driver) - return -ENOMEM; - - serial_driver->owner = THIS_MODULE; - serial_driver->driver_name = "synclink"; - serial_driver->name = "ttySL"; - serial_driver->major = ttymajor; - serial_driver->minor_start = 64; - serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - serial_driver->subtype = SERIAL_TYPE_NORMAL; - serial_driver->init_termios = tty_std_termios; - serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - serial_driver->init_termios.c_ispeed = 9600; - serial_driver->init_termios.c_ospeed = 9600; - serial_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(serial_driver, &mgsl_ops); - if ((rc = tty_register_driver(serial_driver)) < 0) { - printk("%s(%d):Couldn't register serial driver\n", - __FILE__,__LINE__); - put_tty_driver(serial_driver); - serial_driver = NULL; - return rc; - } - - printk("%s %s, tty major#%d\n", - driver_name, driver_version, - serial_driver->major); - return 0; -} - -/* enumerate user specified ISA adapters - */ -static void mgsl_enum_isa_devices(void) -{ - struct mgsl_struct *info; - int i; - - /* Check for user specified ISA devices */ - - for (i=0 ;(i < MAX_ISA_DEVICES) && io[i] && irq[i]; i++){ - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("ISA device specified io=%04X,irq=%d,dma=%d\n", - io[i], irq[i], dma[i] ); - - info = mgsl_allocate_device(); - if ( !info ) { - /* error allocating device instance data */ - if ( debug_level >= DEBUG_LEVEL_ERROR ) - printk( "can't allocate device instance data.\n"); - continue; - } - - /* Copy user configuration info to device instance data */ - info->io_base = (unsigned int)io[i]; - info->irq_level = (unsigned int)irq[i]; - info->irq_level = irq_canonicalize(info->irq_level); - info->dma_level = (unsigned int)dma[i]; - info->bus_type = MGSL_BUS_TYPE_ISA; - info->io_addr_size = 16; - info->irq_flags = 0; - - mgsl_add_device( info ); - } -} - -static void synclink_cleanup(void) -{ - int rc; - struct mgsl_struct *info; - struct mgsl_struct *tmp; - - printk("Unloading %s: %s\n", driver_name, driver_version); - - if (serial_driver) { - if ((rc = tty_unregister_driver(serial_driver))) - printk("%s(%d) failed to unregister tty driver err=%d\n", - __FILE__,__LINE__,rc); - put_tty_driver(serial_driver); - } - - info = mgsl_device_list; - while(info) { -#if SYNCLINK_GENERIC_HDLC - hdlcdev_exit(info); -#endif - mgsl_release_resources(info); - tmp = info; - info = info->next_device; - kfree(tmp); - } - - if (pci_registered) - pci_unregister_driver(&synclink_pci_driver); -} - -static int __init synclink_init(void) -{ - int rc; - - if (break_on_load) { - mgsl_get_text_ptr(); - BREAKPOINT(); - } - - printk("%s %s\n", driver_name, driver_version); - - mgsl_enum_isa_devices(); - if ((rc = pci_register_driver(&synclink_pci_driver)) < 0) - printk("%s:failed to register PCI driver, error=%d\n",__FILE__,rc); - else - pci_registered = true; - - if ((rc = mgsl_init_tty()) < 0) - goto error; - - return 0; - -error: - synclink_cleanup(); - return rc; -} - -static void __exit synclink_exit(void) -{ - synclink_cleanup(); -} - -module_init(synclink_init); -module_exit(synclink_exit); - -/* - * usc_RTCmd() - * - * Issue a USC Receive/Transmit command to the - * Channel Command/Address Register (CCAR). - * - * Notes: - * - * The command is encoded in the most significant 5 bits <15..11> - * of the CCAR value. Bits <10..7> of the CCAR must be preserved - * and Bits <6..0> must be written as zeros. - * - * Arguments: - * - * info pointer to device information structure - * Cmd command mask (use symbolic macros) - * - * Return Value: - * - * None - */ -static void usc_RTCmd( struct mgsl_struct *info, u16 Cmd ) -{ - /* output command to CCAR in bits <15..11> */ - /* preserve bits <10..7>, bits <6..0> must be zero */ - - outw( Cmd + info->loopback_bits, info->io_base + CCAR ); - - /* Read to flush write to CCAR */ - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - inw( info->io_base + CCAR ); - -} /* end of usc_RTCmd() */ - -/* - * usc_DmaCmd() - * - * Issue a DMA command to the DMA Command/Address Register (DCAR). - * - * Arguments: - * - * info pointer to device information structure - * Cmd DMA command mask (usc_DmaCmd_XX Macros) - * - * Return Value: - * - * None - */ -static void usc_DmaCmd( struct mgsl_struct *info, u16 Cmd ) -{ - /* write command mask to DCAR */ - outw( Cmd + info->mbre_bit, info->io_base ); - - /* Read to flush write to DCAR */ - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - inw( info->io_base ); - -} /* end of usc_DmaCmd() */ - -/* - * usc_OutDmaReg() - * - * Write a 16-bit value to a USC DMA register - * - * Arguments: - * - * info pointer to device info structure - * RegAddr register address (number) for write - * RegValue 16-bit value to write to register - * - * Return Value: - * - * None - * - */ -static void usc_OutDmaReg( struct mgsl_struct *info, u16 RegAddr, u16 RegValue ) -{ - /* Note: The DCAR is located at the adapter base address */ - /* Note: must preserve state of BIT8 in DCAR */ - - outw( RegAddr + info->mbre_bit, info->io_base ); - outw( RegValue, info->io_base ); - - /* Read to flush write to DCAR */ - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - inw( info->io_base ); - -} /* end of usc_OutDmaReg() */ - -/* - * usc_InDmaReg() - * - * Read a 16-bit value from a DMA register - * - * Arguments: - * - * info pointer to device info structure - * RegAddr register address (number) to read from - * - * Return Value: - * - * The 16-bit value read from register - * - */ -static u16 usc_InDmaReg( struct mgsl_struct *info, u16 RegAddr ) -{ - /* Note: The DCAR is located at the adapter base address */ - /* Note: must preserve state of BIT8 in DCAR */ - - outw( RegAddr + info->mbre_bit, info->io_base ); - return inw( info->io_base ); - -} /* end of usc_InDmaReg() */ - -/* - * - * usc_OutReg() - * - * Write a 16-bit value to a USC serial channel register - * - * Arguments: - * - * info pointer to device info structure - * RegAddr register address (number) to write to - * RegValue 16-bit value to write to register - * - * Return Value: - * - * None - * - */ -static void usc_OutReg( struct mgsl_struct *info, u16 RegAddr, u16 RegValue ) -{ - outw( RegAddr + info->loopback_bits, info->io_base + CCAR ); - outw( RegValue, info->io_base + CCAR ); - - /* Read to flush write to CCAR */ - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - inw( info->io_base + CCAR ); - -} /* end of usc_OutReg() */ - -/* - * usc_InReg() - * - * Reads a 16-bit value from a USC serial channel register - * - * Arguments: - * - * info pointer to device extension - * RegAddr register address (number) to read from - * - * Return Value: - * - * 16-bit value read from register - */ -static u16 usc_InReg( struct mgsl_struct *info, u16 RegAddr ) -{ - outw( RegAddr + info->loopback_bits, info->io_base + CCAR ); - return inw( info->io_base + CCAR ); - -} /* end of usc_InReg() */ - -/* usc_set_sdlc_mode() - * - * Set up the adapter for SDLC DMA communications. - * - * Arguments: info pointer to device instance data - * Return Value: NONE - */ -static void usc_set_sdlc_mode( struct mgsl_struct *info ) -{ - u16 RegValue; - bool PreSL1660; - - /* - * determine if the IUSC on the adapter is pre-SL1660. If - * not, take advantage of the UnderWait feature of more - * modern chips. If an underrun occurs and this bit is set, - * the transmitter will idle the programmed idle pattern - * until the driver has time to service the underrun. Otherwise, - * the dma controller may get the cycles previously requested - * and begin transmitting queued tx data. - */ - usc_OutReg(info,TMCR,0x1f); - RegValue=usc_InReg(info,TMDR); - PreSL1660 = (RegValue == IUSC_PRE_SL1660); - - if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) - { - /* - ** Channel Mode Register (CMR) - ** - ** <15..14> 10 Tx Sub Modes, Send Flag on Underrun - ** <13> 0 0 = Transmit Disabled (initially) - ** <12> 0 1 = Consecutive Idles share common 0 - ** <11..8> 1110 Transmitter Mode = HDLC/SDLC Loop - ** <7..4> 0000 Rx Sub Modes, addr/ctrl field handling - ** <3..0> 0110 Receiver Mode = HDLC/SDLC - ** - ** 1000 1110 0000 0110 = 0x8e06 - */ - RegValue = 0x8e06; - - /*-------------------------------------------------- - * ignore user options for UnderRun Actions and - * preambles - *--------------------------------------------------*/ - } - else - { - /* Channel mode Register (CMR) - * - * <15..14> 00 Tx Sub modes, Underrun Action - * <13> 0 1 = Send Preamble before opening flag - * <12> 0 1 = Consecutive Idles share common 0 - * <11..8> 0110 Transmitter mode = HDLC/SDLC - * <7..4> 0000 Rx Sub modes, addr/ctrl field handling - * <3..0> 0110 Receiver mode = HDLC/SDLC - * - * 0000 0110 0000 0110 = 0x0606 - */ - if (info->params.mode == MGSL_MODE_RAW) { - RegValue = 0x0001; /* Set Receive mode = external sync */ - - usc_OutReg( info, IOCR, /* Set IOCR DCD is RxSync Detect Input */ - (unsigned short)((usc_InReg(info, IOCR) & ~(BIT13|BIT12)) | BIT12)); - - /* - * TxSubMode: - * CMR <15> 0 Don't send CRC on Tx Underrun - * CMR <14> x undefined - * CMR <13> 0 Send preamble before openning sync - * CMR <12> 0 Send 8-bit syncs, 1=send Syncs per TxLength - * - * TxMode: - * CMR <11-8) 0100 MonoSync - * - * 0x00 0100 xxxx xxxx 04xx - */ - RegValue |= 0x0400; - } - else { - - RegValue = 0x0606; - - if ( info->params.flags & HDLC_FLAG_UNDERRUN_ABORT15 ) - RegValue |= BIT14; - else if ( info->params.flags & HDLC_FLAG_UNDERRUN_FLAG ) - RegValue |= BIT15; - else if ( info->params.flags & HDLC_FLAG_UNDERRUN_CRC ) - RegValue |= BIT15 + BIT14; - } - - if ( info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE ) - RegValue |= BIT13; - } - - if ( info->params.mode == MGSL_MODE_HDLC && - (info->params.flags & HDLC_FLAG_SHARE_ZERO) ) - RegValue |= BIT12; - - if ( info->params.addr_filter != 0xff ) - { - /* set up receive address filtering */ - usc_OutReg( info, RSR, info->params.addr_filter ); - RegValue |= BIT4; - } - - usc_OutReg( info, CMR, RegValue ); - info->cmr_value = RegValue; - - /* Receiver mode Register (RMR) - * - * <15..13> 000 encoding - * <12..11> 00 FCS = 16bit CRC CCITT (x15 + x12 + x5 + 1) - * <10> 1 1 = Set CRC to all 1s (use for SDLC/HDLC) - * <9> 0 1 = Include Receive chars in CRC - * <8> 1 1 = Use Abort/PE bit as abort indicator - * <7..6> 00 Even parity - * <5> 0 parity disabled - * <4..2> 000 Receive Char Length = 8 bits - * <1..0> 00 Disable Receiver - * - * 0000 0101 0000 0000 = 0x0500 - */ - - RegValue = 0x0500; - - switch ( info->params.encoding ) { - case HDLC_ENCODING_NRZB: RegValue |= BIT13; break; - case HDLC_ENCODING_NRZI_MARK: RegValue |= BIT14; break; - case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT14 + BIT13; break; - case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT15; break; - case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT15 + BIT13; break; - case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14; break; - case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14 + BIT13; break; - } - - if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_16_CCITT ) - RegValue |= BIT9; - else if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_32_CCITT ) - RegValue |= ( BIT12 | BIT10 | BIT9 ); - - usc_OutReg( info, RMR, RegValue ); - - /* Set the Receive count Limit Register (RCLR) to 0xffff. */ - /* When an opening flag of an SDLC frame is recognized the */ - /* Receive Character count (RCC) is loaded with the value in */ - /* RCLR. The RCC is decremented for each received byte. The */ - /* value of RCC is stored after the closing flag of the frame */ - /* allowing the frame size to be computed. */ - - usc_OutReg( info, RCLR, RCLRVALUE ); - - usc_RCmd( info, RCmd_SelectRicrdma_level ); - - /* Receive Interrupt Control Register (RICR) - * - * <15..8> ? RxFIFO DMA Request Level - * <7> 0 Exited Hunt IA (Interrupt Arm) - * <6> 0 Idle Received IA - * <5> 0 Break/Abort IA - * <4> 0 Rx Bound IA - * <3> 1 Queued status reflects oldest 2 bytes in FIFO - * <2> 0 Abort/PE IA - * <1> 1 Rx Overrun IA - * <0> 0 Select TC0 value for readback - * - * 0000 0000 0000 1000 = 0x000a - */ - - /* Carry over the Exit Hunt and Idle Received bits */ - /* in case they have been armed by usc_ArmEvents. */ - - RegValue = usc_InReg( info, RICR ) & 0xc0; - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - usc_OutReg( info, RICR, (u16)(0x030a | RegValue) ); - else - usc_OutReg( info, RICR, (u16)(0x140a | RegValue) ); - - /* Unlatch all Rx status bits and clear Rx status IRQ Pending */ - - usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, RECEIVE_STATUS ); - - /* Transmit mode Register (TMR) - * - * <15..13> 000 encoding - * <12..11> 00 FCS = 16bit CRC CCITT (x15 + x12 + x5 + 1) - * <10> 1 1 = Start CRC as all 1s (use for SDLC/HDLC) - * <9> 0 1 = Tx CRC Enabled - * <8> 0 1 = Append CRC to end of transmit frame - * <7..6> 00 Transmit parity Even - * <5> 0 Transmit parity Disabled - * <4..2> 000 Tx Char Length = 8 bits - * <1..0> 00 Disable Transmitter - * - * 0000 0100 0000 0000 = 0x0400 - */ - - RegValue = 0x0400; - - switch ( info->params.encoding ) { - case HDLC_ENCODING_NRZB: RegValue |= BIT13; break; - case HDLC_ENCODING_NRZI_MARK: RegValue |= BIT14; break; - case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT14 + BIT13; break; - case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT15; break; - case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT15 + BIT13; break; - case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14; break; - case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14 + BIT13; break; - } - - if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_16_CCITT ) - RegValue |= BIT9 + BIT8; - else if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_32_CCITT ) - RegValue |= ( BIT12 | BIT10 | BIT9 | BIT8); - - usc_OutReg( info, TMR, RegValue ); - - usc_set_txidle( info ); - - - usc_TCmd( info, TCmd_SelectTicrdma_level ); - - /* Transmit Interrupt Control Register (TICR) - * - * <15..8> ? Transmit FIFO DMA Level - * <7> 0 Present IA (Interrupt Arm) - * <6> 0 Idle Sent IA - * <5> 1 Abort Sent IA - * <4> 1 EOF/EOM Sent IA - * <3> 0 CRC Sent IA - * <2> 1 1 = Wait for SW Trigger to Start Frame - * <1> 1 Tx Underrun IA - * <0> 0 TC0 constant on read back - * - * 0000 0000 0011 0110 = 0x0036 - */ - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - usc_OutReg( info, TICR, 0x0736 ); - else - usc_OutReg( info, TICR, 0x1436 ); - - usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); - - /* - ** Transmit Command/Status Register (TCSR) - ** - ** <15..12> 0000 TCmd - ** <11> 0/1 UnderWait - ** <10..08> 000 TxIdle - ** <7> x PreSent - ** <6> x IdleSent - ** <5> x AbortSent - ** <4> x EOF/EOM Sent - ** <3> x CRC Sent - ** <2> x All Sent - ** <1> x TxUnder - ** <0> x TxEmpty - ** - ** 0000 0000 0000 0000 = 0x0000 - */ - info->tcsr_value = 0; - - if ( !PreSL1660 ) - info->tcsr_value |= TCSR_UNDERWAIT; - - usc_OutReg( info, TCSR, info->tcsr_value ); - - /* Clock mode Control Register (CMCR) - * - * <15..14> 00 counter 1 Source = Disabled - * <13..12> 00 counter 0 Source = Disabled - * <11..10> 11 BRG1 Input is TxC Pin - * <9..8> 11 BRG0 Input is TxC Pin - * <7..6> 01 DPLL Input is BRG1 Output - * <5..3> XXX TxCLK comes from Port 0 - * <2..0> XXX RxCLK comes from Port 1 - * - * 0000 1111 0111 0111 = 0x0f77 - */ - - RegValue = 0x0f40; - - if ( info->params.flags & HDLC_FLAG_RXC_DPLL ) - RegValue |= 0x0003; /* RxCLK from DPLL */ - else if ( info->params.flags & HDLC_FLAG_RXC_BRG ) - RegValue |= 0x0004; /* RxCLK from BRG0 */ - else if ( info->params.flags & HDLC_FLAG_RXC_TXCPIN) - RegValue |= 0x0006; /* RxCLK from TXC Input */ - else - RegValue |= 0x0007; /* RxCLK from Port1 */ - - if ( info->params.flags & HDLC_FLAG_TXC_DPLL ) - RegValue |= 0x0018; /* TxCLK from DPLL */ - else if ( info->params.flags & HDLC_FLAG_TXC_BRG ) - RegValue |= 0x0020; /* TxCLK from BRG0 */ - else if ( info->params.flags & HDLC_FLAG_TXC_RXCPIN) - RegValue |= 0x0038; /* RxCLK from TXC Input */ - else - RegValue |= 0x0030; /* TxCLK from Port0 */ - - usc_OutReg( info, CMCR, RegValue ); - - - /* Hardware Configuration Register (HCR) - * - * <15..14> 00 CTR0 Divisor:00=32,01=16,10=8,11=4 - * <13> 0 CTR1DSel:0=CTR0Div determines CTR0Div - * <12> 0 CVOK:0=report code violation in biphase - * <11..10> 00 DPLL Divisor:00=32,01=16,10=8,11=4 - * <9..8> XX DPLL mode:00=disable,01=NRZ,10=Biphase,11=Biphase Level - * <7..6> 00 reserved - * <5> 0 BRG1 mode:0=continuous,1=single cycle - * <4> X BRG1 Enable - * <3..2> 00 reserved - * <1> 0 BRG0 mode:0=continuous,1=single cycle - * <0> 0 BRG0 Enable - */ - - RegValue = 0x0000; - - if ( info->params.flags & (HDLC_FLAG_RXC_DPLL + HDLC_FLAG_TXC_DPLL) ) { - u32 XtalSpeed; - u32 DpllDivisor; - u16 Tc; - - /* DPLL is enabled. Use BRG1 to provide continuous reference clock */ - /* for DPLL. DPLL mode in HCR is dependent on the encoding used. */ - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - XtalSpeed = 11059200; - else - XtalSpeed = 14745600; - - if ( info->params.flags & HDLC_FLAG_DPLL_DIV16 ) { - DpllDivisor = 16; - RegValue |= BIT10; - } - else if ( info->params.flags & HDLC_FLAG_DPLL_DIV8 ) { - DpllDivisor = 8; - RegValue |= BIT11; - } - else - DpllDivisor = 32; - - /* Tc = (Xtal/Speed) - 1 */ - /* If twice the remainder of (Xtal/Speed) is greater than Speed */ - /* then rounding up gives a more precise time constant. Instead */ - /* of rounding up and then subtracting 1 we just don't subtract */ - /* the one in this case. */ - - /*-------------------------------------------------- - * ejz: for DPLL mode, application should use the - * same clock speed as the partner system, even - * though clocking is derived from the input RxData. - * In case the user uses a 0 for the clock speed, - * default to 0xffffffff and don't try to divide by - * zero - *--------------------------------------------------*/ - if ( info->params.clock_speed ) - { - Tc = (u16)((XtalSpeed/DpllDivisor)/info->params.clock_speed); - if ( !((((XtalSpeed/DpllDivisor) % info->params.clock_speed) * 2) - / info->params.clock_speed) ) - Tc--; - } - else - Tc = -1; - - - /* Write 16-bit Time Constant for BRG1 */ - usc_OutReg( info, TC1R, Tc ); - - RegValue |= BIT4; /* enable BRG1 */ - - switch ( info->params.encoding ) { - case HDLC_ENCODING_NRZ: - case HDLC_ENCODING_NRZB: - case HDLC_ENCODING_NRZI_MARK: - case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT8; break; - case HDLC_ENCODING_BIPHASE_MARK: - case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT9; break; - case HDLC_ENCODING_BIPHASE_LEVEL: - case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT9 + BIT8; break; - } - } - - usc_OutReg( info, HCR, RegValue ); - - - /* Channel Control/status Register (CCSR) - * - * <15> X RCC FIFO Overflow status (RO) - * <14> X RCC FIFO Not Empty status (RO) - * <13> 0 1 = Clear RCC FIFO (WO) - * <12> X DPLL Sync (RW) - * <11> X DPLL 2 Missed Clocks status (RO) - * <10> X DPLL 1 Missed Clock status (RO) - * <9..8> 00 DPLL Resync on rising and falling edges (RW) - * <7> X SDLC Loop On status (RO) - * <6> X SDLC Loop Send status (RO) - * <5> 1 Bypass counters for TxClk and RxClk (RW) - * <4..2> 000 Last Char of SDLC frame has 8 bits (RW) - * <1..0> 00 reserved - * - * 0000 0000 0010 0000 = 0x0020 - */ - - usc_OutReg( info, CCSR, 0x1020 ); - - - if ( info->params.flags & HDLC_FLAG_AUTO_CTS ) { - usc_OutReg( info, SICR, - (u16)(usc_InReg(info,SICR) | SICR_CTS_INACTIVE) ); - } - - - /* enable Master Interrupt Enable bit (MIE) */ - usc_EnableMasterIrqBit( info ); - - usc_ClearIrqPendingBits( info, RECEIVE_STATUS + RECEIVE_DATA + - TRANSMIT_STATUS + TRANSMIT_DATA + MISC); - - /* arm RCC underflow interrupt */ - usc_OutReg(info, SICR, (u16)(usc_InReg(info,SICR) | BIT3)); - usc_EnableInterrupts(info, MISC); - - info->mbre_bit = 0; - outw( 0, info->io_base ); /* clear Master Bus Enable (DCAR) */ - usc_DmaCmd( info, DmaCmd_ResetAllChannels ); /* disable both DMA channels */ - info->mbre_bit = BIT8; - outw( BIT8, info->io_base ); /* set Master Bus Enable (DCAR) */ - - if (info->bus_type == MGSL_BUS_TYPE_ISA) { - /* Enable DMAEN (Port 7, Bit 14) */ - /* This connects the DMA request signal to the ISA bus */ - usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT15) & ~BIT14)); - } - - /* DMA Control Register (DCR) - * - * <15..14> 10 Priority mode = Alternating Tx/Rx - * 01 Rx has priority - * 00 Tx has priority - * - * <13> 1 Enable Priority Preempt per DCR<15..14> - * (WARNING DCR<11..10> must be 00 when this is 1) - * 0 Choose activate channel per DCR<11..10> - * - * <12> 0 Little Endian for Array/List - * <11..10> 00 Both Channels can use each bus grant - * <9..6> 0000 reserved - * <5> 0 7 CLK - Minimum Bus Re-request Interval - * <4> 0 1 = drive D/C and S/D pins - * <3> 1 1 = Add one wait state to all DMA cycles. - * <2> 0 1 = Strobe /UAS on every transfer. - * <1..0> 11 Addr incrementing only affects LS24 bits - * - * 0110 0000 0000 1011 = 0x600b - */ - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - /* PCI adapter does not need DMA wait state */ - usc_OutDmaReg( info, DCR, 0xa00b ); - } - else - usc_OutDmaReg( info, DCR, 0x800b ); - - - /* Receive DMA mode Register (RDMR) - * - * <15..14> 11 DMA mode = Linked List Buffer mode - * <13> 1 RSBinA/L = store Rx status Block in Arrary/List entry - * <12> 1 Clear count of List Entry after fetching - * <11..10> 00 Address mode = Increment - * <9> 1 Terminate Buffer on RxBound - * <8> 0 Bus Width = 16bits - * <7..0> ? status Bits (write as 0s) - * - * 1111 0010 0000 0000 = 0xf200 - */ - - usc_OutDmaReg( info, RDMR, 0xf200 ); - - - /* Transmit DMA mode Register (TDMR) - * - * <15..14> 11 DMA mode = Linked List Buffer mode - * <13> 1 TCBinA/L = fetch Tx Control Block from List entry - * <12> 1 Clear count of List Entry after fetching - * <11..10> 00 Address mode = Increment - * <9> 1 Terminate Buffer on end of frame - * <8> 0 Bus Width = 16bits - * <7..0> ? status Bits (Read Only so write as 0) - * - * 1111 0010 0000 0000 = 0xf200 - */ - - usc_OutDmaReg( info, TDMR, 0xf200 ); - - - /* DMA Interrupt Control Register (DICR) - * - * <15> 1 DMA Interrupt Enable - * <14> 0 1 = Disable IEO from USC - * <13> 0 1 = Don't provide vector during IntAck - * <12> 1 1 = Include status in Vector - * <10..2> 0 reserved, Must be 0s - * <1> 0 1 = Rx DMA Interrupt Enabled - * <0> 0 1 = Tx DMA Interrupt Enabled - * - * 1001 0000 0000 0000 = 0x9000 - */ - - usc_OutDmaReg( info, DICR, 0x9000 ); - - usc_InDmaReg( info, RDMR ); /* clear pending receive DMA IRQ bits */ - usc_InDmaReg( info, TDMR ); /* clear pending transmit DMA IRQ bits */ - usc_OutDmaReg( info, CDIR, 0x0303 ); /* clear IUS and Pending for Tx and Rx */ - - /* Channel Control Register (CCR) - * - * <15..14> 10 Use 32-bit Tx Control Blocks (TCBs) - * <13> 0 Trigger Tx on SW Command Disabled - * <12> 0 Flag Preamble Disabled - * <11..10> 00 Preamble Length - * <9..8> 00 Preamble Pattern - * <7..6> 10 Use 32-bit Rx status Blocks (RSBs) - * <5> 0 Trigger Rx on SW Command Disabled - * <4..0> 0 reserved - * - * 1000 0000 1000 0000 = 0x8080 - */ - - RegValue = 0x8080; - - switch ( info->params.preamble_length ) { - case HDLC_PREAMBLE_LENGTH_16BITS: RegValue |= BIT10; break; - case HDLC_PREAMBLE_LENGTH_32BITS: RegValue |= BIT11; break; - case HDLC_PREAMBLE_LENGTH_64BITS: RegValue |= BIT11 + BIT10; break; - } - - switch ( info->params.preamble ) { - case HDLC_PREAMBLE_PATTERN_FLAGS: RegValue |= BIT8 + BIT12; break; - case HDLC_PREAMBLE_PATTERN_ONES: RegValue |= BIT8; break; - case HDLC_PREAMBLE_PATTERN_10: RegValue |= BIT9; break; - case HDLC_PREAMBLE_PATTERN_01: RegValue |= BIT9 + BIT8; break; - } - - usc_OutReg( info, CCR, RegValue ); - - - /* - * Burst/Dwell Control Register - * - * <15..8> 0x20 Maximum number of transfers per bus grant - * <7..0> 0x00 Maximum number of clock cycles per bus grant - */ - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - /* don't limit bus occupancy on PCI adapter */ - usc_OutDmaReg( info, BDCR, 0x0000 ); - } - else - usc_OutDmaReg( info, BDCR, 0x2000 ); - - usc_stop_transmitter(info); - usc_stop_receiver(info); - -} /* end of usc_set_sdlc_mode() */ - -/* usc_enable_loopback() - * - * Set the 16C32 for internal loopback mode. - * The TxCLK and RxCLK signals are generated from the BRG0 and - * the TxD is looped back to the RxD internally. - * - * Arguments: info pointer to device instance data - * enable 1 = enable loopback, 0 = disable - * Return Value: None - */ -static void usc_enable_loopback(struct mgsl_struct *info, int enable) -{ - if (enable) { - /* blank external TXD output */ - usc_OutReg(info,IOCR,usc_InReg(info,IOCR) | (BIT7+BIT6)); - - /* Clock mode Control Register (CMCR) - * - * <15..14> 00 counter 1 Disabled - * <13..12> 00 counter 0 Disabled - * <11..10> 11 BRG1 Input is TxC Pin - * <9..8> 11 BRG0 Input is TxC Pin - * <7..6> 01 DPLL Input is BRG1 Output - * <5..3> 100 TxCLK comes from BRG0 - * <2..0> 100 RxCLK comes from BRG0 - * - * 0000 1111 0110 0100 = 0x0f64 - */ - - usc_OutReg( info, CMCR, 0x0f64 ); - - /* Write 16-bit Time Constant for BRG0 */ - /* use clock speed if available, otherwise use 8 for diagnostics */ - if (info->params.clock_speed) { - if (info->bus_type == MGSL_BUS_TYPE_PCI) - usc_OutReg(info, TC0R, (u16)((11059200/info->params.clock_speed)-1)); - else - usc_OutReg(info, TC0R, (u16)((14745600/info->params.clock_speed)-1)); - } else - usc_OutReg(info, TC0R, (u16)8); - - /* Hardware Configuration Register (HCR) Clear Bit 1, BRG0 - mode = Continuous Set Bit 0 to enable BRG0. */ - usc_OutReg( info, HCR, (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) ); - - /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */ - usc_OutReg(info, IOCR, (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004)); - - /* set Internal Data loopback mode */ - info->loopback_bits = 0x300; - outw( 0x0300, info->io_base + CCAR ); - } else { - /* enable external TXD output */ - usc_OutReg(info,IOCR,usc_InReg(info,IOCR) & ~(BIT7+BIT6)); - - /* clear Internal Data loopback mode */ - info->loopback_bits = 0; - outw( 0,info->io_base + CCAR ); - } - -} /* end of usc_enable_loopback() */ - -/* usc_enable_aux_clock() - * - * Enabled the AUX clock output at the specified frequency. - * - * Arguments: - * - * info pointer to device extension - * data_rate data rate of clock in bits per second - * A data rate of 0 disables the AUX clock. - * - * Return Value: None - */ -static void usc_enable_aux_clock( struct mgsl_struct *info, u32 data_rate ) -{ - u32 XtalSpeed; - u16 Tc; - - if ( data_rate ) { - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - XtalSpeed = 11059200; - else - XtalSpeed = 14745600; - - - /* Tc = (Xtal/Speed) - 1 */ - /* If twice the remainder of (Xtal/Speed) is greater than Speed */ - /* then rounding up gives a more precise time constant. Instead */ - /* of rounding up and then subtracting 1 we just don't subtract */ - /* the one in this case. */ - - - Tc = (u16)(XtalSpeed/data_rate); - if ( !(((XtalSpeed % data_rate) * 2) / data_rate) ) - Tc--; - - /* Write 16-bit Time Constant for BRG0 */ - usc_OutReg( info, TC0R, Tc ); - - /* - * Hardware Configuration Register (HCR) - * Clear Bit 1, BRG0 mode = Continuous - * Set Bit 0 to enable BRG0. - */ - - usc_OutReg( info, HCR, (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) ); - - /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */ - usc_OutReg( info, IOCR, (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004) ); - } else { - /* data rate == 0 so turn off BRG0 */ - usc_OutReg( info, HCR, (u16)(usc_InReg( info, HCR ) & ~BIT0) ); - } - -} /* end of usc_enable_aux_clock() */ - -/* - * - * usc_process_rxoverrun_sync() - * - * This function processes a receive overrun by resetting the - * receive DMA buffers and issuing a Purge Rx FIFO command - * to allow the receiver to continue receiving. - * - * Arguments: - * - * info pointer to device extension - * - * Return Value: None - */ -static void usc_process_rxoverrun_sync( struct mgsl_struct *info ) -{ - int start_index; - int end_index; - int frame_start_index; - bool start_of_frame_found = false; - bool end_of_frame_found = false; - bool reprogram_dma = false; - - DMABUFFERENTRY *buffer_list = info->rx_buffer_list; - u32 phys_addr; - - usc_DmaCmd( info, DmaCmd_PauseRxChannel ); - usc_RCmd( info, RCmd_EnterHuntmode ); - usc_RTCmd( info, RTCmd_PurgeRxFifo ); - - /* CurrentRxBuffer points to the 1st buffer of the next */ - /* possibly available receive frame. */ - - frame_start_index = start_index = end_index = info->current_rx_buffer; - - /* Search for an unfinished string of buffers. This means */ - /* that a receive frame started (at least one buffer with */ - /* count set to zero) but there is no terminiting buffer */ - /* (status set to non-zero). */ - - while( !buffer_list[end_index].count ) - { - /* Count field has been reset to zero by 16C32. */ - /* This buffer is currently in use. */ - - if ( !start_of_frame_found ) - { - start_of_frame_found = true; - frame_start_index = end_index; - end_of_frame_found = false; - } - - if ( buffer_list[end_index].status ) - { - /* Status field has been set by 16C32. */ - /* This is the last buffer of a received frame. */ - - /* We want to leave the buffers for this frame intact. */ - /* Move on to next possible frame. */ - - start_of_frame_found = false; - end_of_frame_found = true; - } - - /* advance to next buffer entry in linked list */ - end_index++; - if ( end_index == info->rx_buffer_count ) - end_index = 0; - - if ( start_index == end_index ) - { - /* The entire list has been searched with all Counts == 0 and */ - /* all Status == 0. The receive buffers are */ - /* completely screwed, reset all receive buffers! */ - mgsl_reset_rx_dma_buffers( info ); - frame_start_index = 0; - start_of_frame_found = false; - reprogram_dma = true; - break; - } - } - - if ( start_of_frame_found && !end_of_frame_found ) - { - /* There is an unfinished string of receive DMA buffers */ - /* as a result of the receiver overrun. */ - - /* Reset the buffers for the unfinished frame */ - /* and reprogram the receive DMA controller to start */ - /* at the 1st buffer of unfinished frame. */ - - start_index = frame_start_index; - - do - { - *((unsigned long *)&(info->rx_buffer_list[start_index++].count)) = DMABUFFERSIZE; - - /* Adjust index for wrap around. */ - if ( start_index == info->rx_buffer_count ) - start_index = 0; - - } while( start_index != end_index ); - - reprogram_dma = true; - } - - if ( reprogram_dma ) - { - usc_UnlatchRxstatusBits(info,RXSTATUS_ALL); - usc_ClearIrqPendingBits(info, RECEIVE_DATA|RECEIVE_STATUS); - usc_UnlatchRxstatusBits(info, RECEIVE_DATA|RECEIVE_STATUS); - - usc_EnableReceiver(info,DISABLE_UNCONDITIONAL); - - /* This empties the receive FIFO and loads the RCC with RCLR */ - usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); - - /* program 16C32 with physical address of 1st DMA buffer entry */ - phys_addr = info->rx_buffer_list[frame_start_index].phys_entry; - usc_OutDmaReg( info, NRARL, (u16)phys_addr ); - usc_OutDmaReg( info, NRARU, (u16)(phys_addr >> 16) ); - - usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS ); - usc_EnableInterrupts( info, RECEIVE_STATUS ); - - /* 1. Arm End of Buffer (EOB) Receive DMA Interrupt (BIT2 of RDIAR) */ - /* 2. Enable Receive DMA Interrupts (BIT1 of DICR) */ - - usc_OutDmaReg( info, RDIAR, BIT3 + BIT2 ); - usc_OutDmaReg( info, DICR, (u16)(usc_InDmaReg(info,DICR) | BIT1) ); - usc_DmaCmd( info, DmaCmd_InitRxChannel ); - if ( info->params.flags & HDLC_FLAG_AUTO_DCD ) - usc_EnableReceiver(info,ENABLE_AUTO_DCD); - else - usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); - } - else - { - /* This empties the receive FIFO and loads the RCC with RCLR */ - usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); - usc_RTCmd( info, RTCmd_PurgeRxFifo ); - } - -} /* end of usc_process_rxoverrun_sync() */ - -/* usc_stop_receiver() - * - * Disable USC receiver - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_stop_receiver( struct mgsl_struct *info ) -{ - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):usc_stop_receiver(%s)\n", - __FILE__,__LINE__, info->device_name ); - - /* Disable receive DMA channel. */ - /* This also disables receive DMA channel interrupts */ - usc_DmaCmd( info, DmaCmd_ResetRxChannel ); - - usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS ); - usc_DisableInterrupts( info, RECEIVE_DATA + RECEIVE_STATUS ); - - usc_EnableReceiver(info,DISABLE_UNCONDITIONAL); - - /* This empties the receive FIFO and loads the RCC with RCLR */ - usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); - usc_RTCmd( info, RTCmd_PurgeRxFifo ); - - info->rx_enabled = false; - info->rx_overflow = false; - info->rx_rcc_underrun = false; - -} /* end of stop_receiver() */ - -/* usc_start_receiver() - * - * Enable the USC receiver - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_start_receiver( struct mgsl_struct *info ) -{ - u32 phys_addr; - - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):usc_start_receiver(%s)\n", - __FILE__,__LINE__, info->device_name ); - - mgsl_reset_rx_dma_buffers( info ); - usc_stop_receiver( info ); - - usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); - usc_RTCmd( info, RTCmd_PurgeRxFifo ); - - if ( info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW ) { - /* DMA mode Transfers */ - /* Program the DMA controller. */ - /* Enable the DMA controller end of buffer interrupt. */ - - /* program 16C32 with physical address of 1st DMA buffer entry */ - phys_addr = info->rx_buffer_list[0].phys_entry; - usc_OutDmaReg( info, NRARL, (u16)phys_addr ); - usc_OutDmaReg( info, NRARU, (u16)(phys_addr >> 16) ); - - usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS ); - usc_EnableInterrupts( info, RECEIVE_STATUS ); - - /* 1. Arm End of Buffer (EOB) Receive DMA Interrupt (BIT2 of RDIAR) */ - /* 2. Enable Receive DMA Interrupts (BIT1 of DICR) */ - - usc_OutDmaReg( info, RDIAR, BIT3 + BIT2 ); - usc_OutDmaReg( info, DICR, (u16)(usc_InDmaReg(info,DICR) | BIT1) ); - usc_DmaCmd( info, DmaCmd_InitRxChannel ); - if ( info->params.flags & HDLC_FLAG_AUTO_DCD ) - usc_EnableReceiver(info,ENABLE_AUTO_DCD); - else - usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); - } else { - usc_UnlatchRxstatusBits(info, RXSTATUS_ALL); - usc_ClearIrqPendingBits(info, RECEIVE_DATA + RECEIVE_STATUS); - usc_EnableInterrupts(info, RECEIVE_DATA); - - usc_RTCmd( info, RTCmd_PurgeRxFifo ); - usc_RCmd( info, RCmd_EnterHuntmode ); - - usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); - } - - usc_OutReg( info, CCSR, 0x1020 ); - - info->rx_enabled = true; - -} /* end of usc_start_receiver() */ - -/* usc_start_transmitter() - * - * Enable the USC transmitter and send a transmit frame if - * one is loaded in the DMA buffers. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_start_transmitter( struct mgsl_struct *info ) -{ - u32 phys_addr; - unsigned int FrameSize; - - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):usc_start_transmitter(%s)\n", - __FILE__,__LINE__, info->device_name ); - - if ( info->xmit_cnt ) { - - /* If auto RTS enabled and RTS is inactive, then assert */ - /* RTS and set a flag indicating that the driver should */ - /* negate RTS when the transmission completes. */ - - info->drop_rts_on_tx_done = false; - - if ( info->params.flags & HDLC_FLAG_AUTO_RTS ) { - usc_get_serial_signals( info ); - if ( !(info->serial_signals & SerialSignal_RTS) ) { - info->serial_signals |= SerialSignal_RTS; - usc_set_serial_signals( info ); - info->drop_rts_on_tx_done = true; - } - } - - - if ( info->params.mode == MGSL_MODE_ASYNC ) { - if ( !info->tx_active ) { - usc_UnlatchTxstatusBits(info, TXSTATUS_ALL); - usc_ClearIrqPendingBits(info, TRANSMIT_STATUS + TRANSMIT_DATA); - usc_EnableInterrupts(info, TRANSMIT_DATA); - usc_load_txfifo(info); - } - } else { - /* Disable transmit DMA controller while programming. */ - usc_DmaCmd( info, DmaCmd_ResetTxChannel ); - - /* Transmit DMA buffer is loaded, so program USC */ - /* to send the frame contained in the buffers. */ - - FrameSize = info->tx_buffer_list[info->start_tx_dma_buffer].rcc; - - /* if operating in Raw sync mode, reset the rcc component - * of the tx dma buffer entry, otherwise, the serial controller - * will send a closing sync char after this count. - */ - if ( info->params.mode == MGSL_MODE_RAW ) - info->tx_buffer_list[info->start_tx_dma_buffer].rcc = 0; - - /* Program the Transmit Character Length Register (TCLR) */ - /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */ - usc_OutReg( info, TCLR, (u16)FrameSize ); - - usc_RTCmd( info, RTCmd_PurgeTxFifo ); - - /* Program the address of the 1st DMA Buffer Entry in linked list */ - phys_addr = info->tx_buffer_list[info->start_tx_dma_buffer].phys_entry; - usc_OutDmaReg( info, NTARL, (u16)phys_addr ); - usc_OutDmaReg( info, NTARU, (u16)(phys_addr >> 16) ); - - usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); - usc_EnableInterrupts( info, TRANSMIT_STATUS ); - - if ( info->params.mode == MGSL_MODE_RAW && - info->num_tx_dma_buffers > 1 ) { - /* When running external sync mode, attempt to 'stream' transmit */ - /* by filling tx dma buffers as they become available. To do this */ - /* we need to enable Tx DMA EOB Status interrupts : */ - /* */ - /* 1. Arm End of Buffer (EOB) Transmit DMA Interrupt (BIT2 of TDIAR) */ - /* 2. Enable Transmit DMA Interrupts (BIT0 of DICR) */ - - usc_OutDmaReg( info, TDIAR, BIT2|BIT3 ); - usc_OutDmaReg( info, DICR, (u16)(usc_InDmaReg(info,DICR) | BIT0) ); - } - - /* Initialize Transmit DMA Channel */ - usc_DmaCmd( info, DmaCmd_InitTxChannel ); - - usc_TCmd( info, TCmd_SendFrame ); - - mod_timer(&info->tx_timer, jiffies + - msecs_to_jiffies(5000)); - } - info->tx_active = true; - } - - if ( !info->tx_enabled ) { - info->tx_enabled = true; - if ( info->params.flags & HDLC_FLAG_AUTO_CTS ) - usc_EnableTransmitter(info,ENABLE_AUTO_CTS); - else - usc_EnableTransmitter(info,ENABLE_UNCONDITIONAL); - } - -} /* end of usc_start_transmitter() */ - -/* usc_stop_transmitter() - * - * Stops the transmitter and DMA - * - * Arguments: info pointer to device isntance data - * Return Value: None - */ -static void usc_stop_transmitter( struct mgsl_struct *info ) -{ - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):usc_stop_transmitter(%s)\n", - __FILE__,__LINE__, info->device_name ); - - del_timer(&info->tx_timer); - - usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, TRANSMIT_STATUS + TRANSMIT_DATA ); - usc_DisableInterrupts( info, TRANSMIT_STATUS + TRANSMIT_DATA ); - - usc_EnableTransmitter(info,DISABLE_UNCONDITIONAL); - usc_DmaCmd( info, DmaCmd_ResetTxChannel ); - usc_RTCmd( info, RTCmd_PurgeTxFifo ); - - info->tx_enabled = false; - info->tx_active = false; - -} /* end of usc_stop_transmitter() */ - -/* usc_load_txfifo() - * - * Fill the transmit FIFO until the FIFO is full or - * there is no more data to load. - * - * Arguments: info pointer to device extension (instance data) - * Return Value: None - */ -static void usc_load_txfifo( struct mgsl_struct *info ) -{ - int Fifocount; - u8 TwoBytes[2]; - - if ( !info->xmit_cnt && !info->x_char ) - return; - - /* Select transmit FIFO status readback in TICR */ - usc_TCmd( info, TCmd_SelectTicrTxFifostatus ); - - /* load the Transmit FIFO until FIFOs full or all data sent */ - - while( (Fifocount = usc_InReg(info, TICR) >> 8) && info->xmit_cnt ) { - /* there is more space in the transmit FIFO and */ - /* there is more data in transmit buffer */ - - if ( (info->xmit_cnt > 1) && (Fifocount > 1) && !info->x_char ) { - /* write a 16-bit word from transmit buffer to 16C32 */ - - TwoBytes[0] = info->xmit_buf[info->xmit_tail++]; - info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1); - TwoBytes[1] = info->xmit_buf[info->xmit_tail++]; - info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1); - - outw( *((u16 *)TwoBytes), info->io_base + DATAREG); - - info->xmit_cnt -= 2; - info->icount.tx += 2; - } else { - /* only 1 byte left to transmit or 1 FIFO slot left */ - - outw( (inw( info->io_base + CCAR) & 0x0780) | (TDR+LSBONLY), - info->io_base + CCAR ); - - if (info->x_char) { - /* transmit pending high priority char */ - outw( info->x_char,info->io_base + CCAR ); - info->x_char = 0; - } else { - outw( info->xmit_buf[info->xmit_tail++],info->io_base + CCAR ); - info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1); - info->xmit_cnt--; - } - info->icount.tx++; - } - } - -} /* end of usc_load_txfifo() */ - -/* usc_reset() - * - * Reset the adapter to a known state and prepare it for further use. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_reset( struct mgsl_struct *info ) -{ - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { - int i; - u32 readval; - - /* Set BIT30 of Misc Control Register */ - /* (Local Control Register 0x50) to force reset of USC. */ - - volatile u32 *MiscCtrl = (u32 *)(info->lcr_base + 0x50); - u32 *LCR0BRDR = (u32 *)(info->lcr_base + 0x28); - - info->misc_ctrl_value |= BIT30; - *MiscCtrl = info->misc_ctrl_value; - - /* - * Force at least 170ns delay before clearing - * reset bit. Each read from LCR takes at least - * 30ns so 10 times for 300ns to be safe. - */ - for(i=0;i<10;i++) - readval = *MiscCtrl; - - info->misc_ctrl_value &= ~BIT30; - *MiscCtrl = info->misc_ctrl_value; - - *LCR0BRDR = BUS_DESCRIPTOR( - 1, // Write Strobe Hold (0-3) - 2, // Write Strobe Delay (0-3) - 2, // Read Strobe Delay (0-3) - 0, // NWDD (Write data-data) (0-3) - 4, // NWAD (Write Addr-data) (0-31) - 0, // NXDA (Read/Write Data-Addr) (0-3) - 0, // NRDD (Read Data-Data) (0-3) - 5 // NRAD (Read Addr-Data) (0-31) - ); - } else { - /* do HW reset */ - outb( 0,info->io_base + 8 ); - } - - info->mbre_bit = 0; - info->loopback_bits = 0; - info->usc_idle_mode = 0; - - /* - * Program the Bus Configuration Register (BCR) - * - * <15> 0 Don't use separate address - * <14..6> 0 reserved - * <5..4> 00 IAckmode = Default, don't care - * <3> 1 Bus Request Totem Pole output - * <2> 1 Use 16 Bit data bus - * <1> 0 IRQ Totem Pole output - * <0> 0 Don't Shift Right Addr - * - * 0000 0000 0000 1100 = 0x000c - * - * By writing to io_base + SDPIN the Wait/Ack pin is - * programmed to work as a Wait pin. - */ - - outw( 0x000c,info->io_base + SDPIN ); - - - outw( 0,info->io_base ); - outw( 0,info->io_base + CCAR ); - - /* select little endian byte ordering */ - usc_RTCmd( info, RTCmd_SelectLittleEndian ); - - - /* Port Control Register (PCR) - * - * <15..14> 11 Port 7 is Output (~DMAEN, Bit 14 : 0 = Enabled) - * <13..12> 11 Port 6 is Output (~INTEN, Bit 12 : 0 = Enabled) - * <11..10> 00 Port 5 is Input (No Connect, Don't Care) - * <9..8> 00 Port 4 is Input (No Connect, Don't Care) - * <7..6> 11 Port 3 is Output (~RTS, Bit 6 : 0 = Enabled ) - * <5..4> 11 Port 2 is Output (~DTR, Bit 4 : 0 = Enabled ) - * <3..2> 01 Port 1 is Input (Dedicated RxC) - * <1..0> 01 Port 0 is Input (Dedicated TxC) - * - * 1111 0000 1111 0101 = 0xf0f5 - */ - - usc_OutReg( info, PCR, 0xf0f5 ); - - - /* - * Input/Output Control Register - * - * <15..14> 00 CTS is active low input - * <13..12> 00 DCD is active low input - * <11..10> 00 TxREQ pin is input (DSR) - * <9..8> 00 RxREQ pin is input (RI) - * <7..6> 00 TxD is output (Transmit Data) - * <5..3> 000 TxC Pin in Input (14.7456MHz Clock) - * <2..0> 100 RxC is Output (drive with BRG0) - * - * 0000 0000 0000 0100 = 0x0004 - */ - - usc_OutReg( info, IOCR, 0x0004 ); - -} /* end of usc_reset() */ - -/* usc_set_async_mode() - * - * Program adapter for asynchronous communications. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_set_async_mode( struct mgsl_struct *info ) -{ - u16 RegValue; - - /* disable interrupts while programming USC */ - usc_DisableMasterIrqBit( info ); - - outw( 0, info->io_base ); /* clear Master Bus Enable (DCAR) */ - usc_DmaCmd( info, DmaCmd_ResetAllChannels ); /* disable both DMA channels */ - - usc_loopback_frame( info ); - - /* Channel mode Register (CMR) - * - * <15..14> 00 Tx Sub modes, 00 = 1 Stop Bit - * <13..12> 00 00 = 16X Clock - * <11..8> 0000 Transmitter mode = Asynchronous - * <7..6> 00 reserved? - * <5..4> 00 Rx Sub modes, 00 = 16X Clock - * <3..0> 0000 Receiver mode = Asynchronous - * - * 0000 0000 0000 0000 = 0x0 - */ - - RegValue = 0; - if ( info->params.stop_bits != 1 ) - RegValue |= BIT14; - usc_OutReg( info, CMR, RegValue ); - - - /* Receiver mode Register (RMR) - * - * <15..13> 000 encoding = None - * <12..08> 00000 reserved (Sync Only) - * <7..6> 00 Even parity - * <5> 0 parity disabled - * <4..2> 000 Receive Char Length = 8 bits - * <1..0> 00 Disable Receiver - * - * 0000 0000 0000 0000 = 0x0 - */ - - RegValue = 0; - - if ( info->params.data_bits != 8 ) - RegValue |= BIT4+BIT3+BIT2; - - if ( info->params.parity != ASYNC_PARITY_NONE ) { - RegValue |= BIT5; - if ( info->params.parity != ASYNC_PARITY_ODD ) - RegValue |= BIT6; - } - - usc_OutReg( info, RMR, RegValue ); - - - /* Set IRQ trigger level */ - - usc_RCmd( info, RCmd_SelectRicrIntLevel ); - - - /* Receive Interrupt Control Register (RICR) - * - * <15..8> ? RxFIFO IRQ Request Level - * - * Note: For async mode the receive FIFO level must be set - * to 0 to avoid the situation where the FIFO contains fewer bytes - * than the trigger level and no more data is expected. - * - * <7> 0 Exited Hunt IA (Interrupt Arm) - * <6> 0 Idle Received IA - * <5> 0 Break/Abort IA - * <4> 0 Rx Bound IA - * <3> 0 Queued status reflects oldest byte in FIFO - * <2> 0 Abort/PE IA - * <1> 0 Rx Overrun IA - * <0> 0 Select TC0 value for readback - * - * 0000 0000 0100 0000 = 0x0000 + (FIFOLEVEL in MSB) - */ - - usc_OutReg( info, RICR, 0x0000 ); - - usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, RECEIVE_STATUS ); - - - /* Transmit mode Register (TMR) - * - * <15..13> 000 encoding = None - * <12..08> 00000 reserved (Sync Only) - * <7..6> 00 Transmit parity Even - * <5> 0 Transmit parity Disabled - * <4..2> 000 Tx Char Length = 8 bits - * <1..0> 00 Disable Transmitter - * - * 0000 0000 0000 0000 = 0x0 - */ - - RegValue = 0; - - if ( info->params.data_bits != 8 ) - RegValue |= BIT4+BIT3+BIT2; - - if ( info->params.parity != ASYNC_PARITY_NONE ) { - RegValue |= BIT5; - if ( info->params.parity != ASYNC_PARITY_ODD ) - RegValue |= BIT6; - } - - usc_OutReg( info, TMR, RegValue ); - - usc_set_txidle( info ); - - - /* Set IRQ trigger level */ - - usc_TCmd( info, TCmd_SelectTicrIntLevel ); - - - /* Transmit Interrupt Control Register (TICR) - * - * <15..8> ? Transmit FIFO IRQ Level - * <7> 0 Present IA (Interrupt Arm) - * <6> 1 Idle Sent IA - * <5> 0 Abort Sent IA - * <4> 0 EOF/EOM Sent IA - * <3> 0 CRC Sent IA - * <2> 0 1 = Wait for SW Trigger to Start Frame - * <1> 0 Tx Underrun IA - * <0> 0 TC0 constant on read back - * - * 0000 0000 0100 0000 = 0x0040 - */ - - usc_OutReg( info, TICR, 0x1f40 ); - - usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); - usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); - - usc_enable_async_clock( info, info->params.data_rate ); - - - /* Channel Control/status Register (CCSR) - * - * <15> X RCC FIFO Overflow status (RO) - * <14> X RCC FIFO Not Empty status (RO) - * <13> 0 1 = Clear RCC FIFO (WO) - * <12> X DPLL in Sync status (RO) - * <11> X DPLL 2 Missed Clocks status (RO) - * <10> X DPLL 1 Missed Clock status (RO) - * <9..8> 00 DPLL Resync on rising and falling edges (RW) - * <7> X SDLC Loop On status (RO) - * <6> X SDLC Loop Send status (RO) - * <5> 1 Bypass counters for TxClk and RxClk (RW) - * <4..2> 000 Last Char of SDLC frame has 8 bits (RW) - * <1..0> 00 reserved - * - * 0000 0000 0010 0000 = 0x0020 - */ - - usc_OutReg( info, CCSR, 0x0020 ); - - usc_DisableInterrupts( info, TRANSMIT_STATUS + TRANSMIT_DATA + - RECEIVE_DATA + RECEIVE_STATUS ); - - usc_ClearIrqPendingBits( info, TRANSMIT_STATUS + TRANSMIT_DATA + - RECEIVE_DATA + RECEIVE_STATUS ); - - usc_EnableMasterIrqBit( info ); - - if (info->bus_type == MGSL_BUS_TYPE_ISA) { - /* Enable INTEN (Port 6, Bit12) */ - /* This connects the IRQ request signal to the ISA bus */ - usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12)); - } - - if (info->params.loopback) { - info->loopback_bits = 0x300; - outw(0x0300, info->io_base + CCAR); - } - -} /* end of usc_set_async_mode() */ - -/* usc_loopback_frame() - * - * Loop back a small (2 byte) dummy SDLC frame. - * Interrupts and DMA are NOT used. The purpose of this is to - * clear any 'stale' status info left over from running in async mode. - * - * The 16C32 shows the strange behaviour of marking the 1st - * received SDLC frame with a CRC error even when there is no - * CRC error. To get around this a small dummy from of 2 bytes - * is looped back when switching from async to sync mode. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_loopback_frame( struct mgsl_struct *info ) -{ - int i; - unsigned long oldmode = info->params.mode; - - info->params.mode = MGSL_MODE_HDLC; - - usc_DisableMasterIrqBit( info ); - - usc_set_sdlc_mode( info ); - usc_enable_loopback( info, 1 ); - - /* Write 16-bit Time Constant for BRG0 */ - usc_OutReg( info, TC0R, 0 ); - - /* Channel Control Register (CCR) - * - * <15..14> 00 Don't use 32-bit Tx Control Blocks (TCBs) - * <13> 0 Trigger Tx on SW Command Disabled - * <12> 0 Flag Preamble Disabled - * <11..10> 00 Preamble Length = 8-Bits - * <9..8> 01 Preamble Pattern = flags - * <7..6> 10 Don't use 32-bit Rx status Blocks (RSBs) - * <5> 0 Trigger Rx on SW Command Disabled - * <4..0> 0 reserved - * - * 0000 0001 0000 0000 = 0x0100 - */ - - usc_OutReg( info, CCR, 0x0100 ); - - /* SETUP RECEIVER */ - usc_RTCmd( info, RTCmd_PurgeRxFifo ); - usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); - - /* SETUP TRANSMITTER */ - /* Program the Transmit Character Length Register (TCLR) */ - /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */ - usc_OutReg( info, TCLR, 2 ); - usc_RTCmd( info, RTCmd_PurgeTxFifo ); - - /* unlatch Tx status bits, and start transmit channel. */ - usc_UnlatchTxstatusBits(info,TXSTATUS_ALL); - outw(0,info->io_base + DATAREG); - - /* ENABLE TRANSMITTER */ - usc_TCmd( info, TCmd_SendFrame ); - usc_EnableTransmitter(info,ENABLE_UNCONDITIONAL); - - /* WAIT FOR RECEIVE COMPLETE */ - for (i=0 ; i<1000 ; i++) - if (usc_InReg( info, RCSR ) & (BIT8 + BIT4 + BIT3 + BIT1)) - break; - - /* clear Internal Data loopback mode */ - usc_enable_loopback(info, 0); - - usc_EnableMasterIrqBit(info); - - info->params.mode = oldmode; - -} /* end of usc_loopback_frame() */ - -/* usc_set_sync_mode() Programs the USC for SDLC communications. - * - * Arguments: info pointer to adapter info structure - * Return Value: None - */ -static void usc_set_sync_mode( struct mgsl_struct *info ) -{ - usc_loopback_frame( info ); - usc_set_sdlc_mode( info ); - - if (info->bus_type == MGSL_BUS_TYPE_ISA) { - /* Enable INTEN (Port 6, Bit12) */ - /* This connects the IRQ request signal to the ISA bus */ - usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12)); - } - - usc_enable_aux_clock(info, info->params.clock_speed); - - if (info->params.loopback) - usc_enable_loopback(info,1); - -} /* end of mgsl_set_sync_mode() */ - -/* usc_set_txidle() Set the HDLC idle mode for the transmitter. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_set_txidle( struct mgsl_struct *info ) -{ - u16 usc_idle_mode = IDLEMODE_FLAGS; - - /* Map API idle mode to USC register bits */ - - switch( info->idle_mode ){ - case HDLC_TXIDLE_FLAGS: usc_idle_mode = IDLEMODE_FLAGS; break; - case HDLC_TXIDLE_ALT_ZEROS_ONES: usc_idle_mode = IDLEMODE_ALT_ONE_ZERO; break; - case HDLC_TXIDLE_ZEROS: usc_idle_mode = IDLEMODE_ZERO; break; - case HDLC_TXIDLE_ONES: usc_idle_mode = IDLEMODE_ONE; break; - case HDLC_TXIDLE_ALT_MARK_SPACE: usc_idle_mode = IDLEMODE_ALT_MARK_SPACE; break; - case HDLC_TXIDLE_SPACE: usc_idle_mode = IDLEMODE_SPACE; break; - case HDLC_TXIDLE_MARK: usc_idle_mode = IDLEMODE_MARK; break; - } - - info->usc_idle_mode = usc_idle_mode; - //usc_OutReg(info, TCSR, usc_idle_mode); - info->tcsr_value &= ~IDLEMODE_MASK; /* clear idle mode bits */ - info->tcsr_value += usc_idle_mode; - usc_OutReg(info, TCSR, info->tcsr_value); - - /* - * if SyncLink WAN adapter is running in external sync mode, the - * transmitter has been set to Monosync in order to try to mimic - * a true raw outbound bit stream. Monosync still sends an open/close - * sync char at the start/end of a frame. Try to match those sync - * patterns to the idle mode set here - */ - if ( info->params.mode == MGSL_MODE_RAW ) { - unsigned char syncpat = 0; - switch( info->idle_mode ) { - case HDLC_TXIDLE_FLAGS: - syncpat = 0x7e; - break; - case HDLC_TXIDLE_ALT_ZEROS_ONES: - syncpat = 0x55; - break; - case HDLC_TXIDLE_ZEROS: - case HDLC_TXIDLE_SPACE: - syncpat = 0x00; - break; - case HDLC_TXIDLE_ONES: - case HDLC_TXIDLE_MARK: - syncpat = 0xff; - break; - case HDLC_TXIDLE_ALT_MARK_SPACE: - syncpat = 0xaa; - break; - } - - usc_SetTransmitSyncChars(info,syncpat,syncpat); - } - -} /* end of usc_set_txidle() */ - -/* usc_get_serial_signals() - * - * Query the adapter for the state of the V24 status (input) signals. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_get_serial_signals( struct mgsl_struct *info ) -{ - u16 status; - - /* clear all serial signals except DTR and RTS */ - info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; - - /* Read the Misc Interrupt status Register (MISR) to get */ - /* the V24 status signals. */ - - status = usc_InReg( info, MISR ); - - /* set serial signal bits to reflect MISR */ - - if ( status & MISCSTATUS_CTS ) - info->serial_signals |= SerialSignal_CTS; - - if ( status & MISCSTATUS_DCD ) - info->serial_signals |= SerialSignal_DCD; - - if ( status & MISCSTATUS_RI ) - info->serial_signals |= SerialSignal_RI; - - if ( status & MISCSTATUS_DSR ) - info->serial_signals |= SerialSignal_DSR; - -} /* end of usc_get_serial_signals() */ - -/* usc_set_serial_signals() - * - * Set the state of DTR and RTS based on contents of - * serial_signals member of device extension. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void usc_set_serial_signals( struct mgsl_struct *info ) -{ - u16 Control; - unsigned char V24Out = info->serial_signals; - - /* get the current value of the Port Control Register (PCR) */ - - Control = usc_InReg( info, PCR ); - - if ( V24Out & SerialSignal_RTS ) - Control &= ~(BIT6); - else - Control |= BIT6; - - if ( V24Out & SerialSignal_DTR ) - Control &= ~(BIT4); - else - Control |= BIT4; - - usc_OutReg( info, PCR, Control ); - -} /* end of usc_set_serial_signals() */ - -/* usc_enable_async_clock() - * - * Enable the async clock at the specified frequency. - * - * Arguments: info pointer to device instance data - * data_rate data rate of clock in bps - * 0 disables the AUX clock. - * Return Value: None - */ -static void usc_enable_async_clock( struct mgsl_struct *info, u32 data_rate ) -{ - if ( data_rate ) { - /* - * Clock mode Control Register (CMCR) - * - * <15..14> 00 counter 1 Disabled - * <13..12> 00 counter 0 Disabled - * <11..10> 11 BRG1 Input is TxC Pin - * <9..8> 11 BRG0 Input is TxC Pin - * <7..6> 01 DPLL Input is BRG1 Output - * <5..3> 100 TxCLK comes from BRG0 - * <2..0> 100 RxCLK comes from BRG0 - * - * 0000 1111 0110 0100 = 0x0f64 - */ - - usc_OutReg( info, CMCR, 0x0f64 ); - - - /* - * Write 16-bit Time Constant for BRG0 - * Time Constant = (ClkSpeed / data_rate) - 1 - * ClkSpeed = 921600 (ISA), 691200 (PCI) - */ - - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - usc_OutReg( info, TC0R, (u16)((691200/data_rate) - 1) ); - else - usc_OutReg( info, TC0R, (u16)((921600/data_rate) - 1) ); - - - /* - * Hardware Configuration Register (HCR) - * Clear Bit 1, BRG0 mode = Continuous - * Set Bit 0 to enable BRG0. - */ - - usc_OutReg( info, HCR, - (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) ); - - - /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */ - - usc_OutReg( info, IOCR, - (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004) ); - } else { - /* data rate == 0 so turn off BRG0 */ - usc_OutReg( info, HCR, (u16)(usc_InReg( info, HCR ) & ~BIT0) ); - } - -} /* end of usc_enable_async_clock() */ - -/* - * Buffer Structures: - * - * Normal memory access uses virtual addresses that can make discontiguous - * physical memory pages appear to be contiguous in the virtual address - * space (the processors memory mapping handles the conversions). - * - * DMA transfers require physically contiguous memory. This is because - * the DMA system controller and DMA bus masters deal with memory using - * only physical addresses. - * - * This causes a problem under Windows NT when large DMA buffers are - * needed. Fragmentation of the nonpaged pool prevents allocations of - * physically contiguous buffers larger than the PAGE_SIZE. - * - * However the 16C32 supports Bus Master Scatter/Gather DMA which - * allows DMA transfers to physically discontiguous buffers. Information - * about each data transfer buffer is contained in a memory structure - * called a 'buffer entry'. A list of buffer entries is maintained - * to track and control the use of the data transfer buffers. - * - * To support this strategy we will allocate sufficient PAGE_SIZE - * contiguous memory buffers to allow for the total required buffer - * space. - * - * The 16C32 accesses the list of buffer entries using Bus Master - * DMA. Control information is read from the buffer entries by the - * 16C32 to control data transfers. status information is written to - * the buffer entries by the 16C32 to indicate the status of completed - * transfers. - * - * The CPU writes control information to the buffer entries to control - * the 16C32 and reads status information from the buffer entries to - * determine information about received and transmitted frames. - * - * Because the CPU and 16C32 (adapter) both need simultaneous access - * to the buffer entries, the buffer entry memory is allocated with - * HalAllocateCommonBuffer(). This restricts the size of the buffer - * entry list to PAGE_SIZE. - * - * The actual data buffers on the other hand will only be accessed - * by the CPU or the adapter but not by both simultaneously. This allows - * Scatter/Gather packet based DMA procedures for using physically - * discontiguous pages. - */ - -/* - * mgsl_reset_tx_dma_buffers() - * - * Set the count for all transmit buffers to 0 to indicate the - * buffer is available for use and set the current buffer to the - * first buffer. This effectively makes all buffers free and - * discards any data in buffers. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_reset_tx_dma_buffers( struct mgsl_struct *info ) -{ - unsigned int i; - - for ( i = 0; i < info->tx_buffer_count; i++ ) { - *((unsigned long *)&(info->tx_buffer_list[i].count)) = 0; - } - - info->current_tx_buffer = 0; - info->start_tx_dma_buffer = 0; - info->tx_dma_buffers_used = 0; - - info->get_tx_holding_index = 0; - info->put_tx_holding_index = 0; - info->tx_holding_count = 0; - -} /* end of mgsl_reset_tx_dma_buffers() */ - -/* - * num_free_tx_dma_buffers() - * - * returns the number of free tx dma buffers available - * - * Arguments: info pointer to device instance data - * Return Value: number of free tx dma buffers - */ -static int num_free_tx_dma_buffers(struct mgsl_struct *info) -{ - return info->tx_buffer_count - info->tx_dma_buffers_used; -} - -/* - * mgsl_reset_rx_dma_buffers() - * - * Set the count for all receive buffers to DMABUFFERSIZE - * and set the current buffer to the first buffer. This effectively - * makes all buffers free and discards any data in buffers. - * - * Arguments: info pointer to device instance data - * Return Value: None - */ -static void mgsl_reset_rx_dma_buffers( struct mgsl_struct *info ) -{ - unsigned int i; - - for ( i = 0; i < info->rx_buffer_count; i++ ) { - *((unsigned long *)&(info->rx_buffer_list[i].count)) = DMABUFFERSIZE; -// info->rx_buffer_list[i].count = DMABUFFERSIZE; -// info->rx_buffer_list[i].status = 0; - } - - info->current_rx_buffer = 0; - -} /* end of mgsl_reset_rx_dma_buffers() */ - -/* - * mgsl_free_rx_frame_buffers() - * - * Free the receive buffers used by a received SDLC - * frame such that the buffers can be reused. - * - * Arguments: - * - * info pointer to device instance data - * StartIndex index of 1st receive buffer of frame - * EndIndex index of last receive buffer of frame - * - * Return Value: None - */ -static void mgsl_free_rx_frame_buffers( struct mgsl_struct *info, unsigned int StartIndex, unsigned int EndIndex ) -{ - bool Done = false; - DMABUFFERENTRY *pBufEntry; - unsigned int Index; - - /* Starting with 1st buffer entry of the frame clear the status */ - /* field and set the count field to DMA Buffer Size. */ - - Index = StartIndex; - - while( !Done ) { - pBufEntry = &(info->rx_buffer_list[Index]); - - if ( Index == EndIndex ) { - /* This is the last buffer of the frame! */ - Done = true; - } - - /* reset current buffer for reuse */ -// pBufEntry->status = 0; -// pBufEntry->count = DMABUFFERSIZE; - *((unsigned long *)&(pBufEntry->count)) = DMABUFFERSIZE; - - /* advance to next buffer entry in linked list */ - Index++; - if ( Index == info->rx_buffer_count ) - Index = 0; - } - - /* set current buffer to next buffer after last buffer of frame */ - info->current_rx_buffer = Index; - -} /* end of free_rx_frame_buffers() */ - -/* mgsl_get_rx_frame() - * - * This function attempts to return a received SDLC frame from the - * receive DMA buffers. Only frames received without errors are returned. - * - * Arguments: info pointer to device extension - * Return Value: true if frame returned, otherwise false - */ -static bool mgsl_get_rx_frame(struct mgsl_struct *info) -{ - unsigned int StartIndex, EndIndex; /* index of 1st and last buffers of Rx frame */ - unsigned short status; - DMABUFFERENTRY *pBufEntry; - unsigned int framesize = 0; - bool ReturnCode = false; - unsigned long flags; - struct tty_struct *tty = info->port.tty; - bool return_frame = false; - - /* - * current_rx_buffer points to the 1st buffer of the next available - * receive frame. To find the last buffer of the frame look for - * a non-zero status field in the buffer entries. (The status - * field is set by the 16C32 after completing a receive frame. - */ - - StartIndex = EndIndex = info->current_rx_buffer; - - while( !info->rx_buffer_list[EndIndex].status ) { - /* - * If the count field of the buffer entry is non-zero then - * this buffer has not been used. (The 16C32 clears the count - * field when it starts using the buffer.) If an unused buffer - * is encountered then there are no frames available. - */ - - if ( info->rx_buffer_list[EndIndex].count ) - goto Cleanup; - - /* advance to next buffer entry in linked list */ - EndIndex++; - if ( EndIndex == info->rx_buffer_count ) - EndIndex = 0; - - /* if entire list searched then no frame available */ - if ( EndIndex == StartIndex ) { - /* If this occurs then something bad happened, - * all buffers have been 'used' but none mark - * the end of a frame. Reset buffers and receiver. - */ - - if ( info->rx_enabled ){ - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_start_receiver(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } - goto Cleanup; - } - } - - - /* check status of receive frame */ - - status = info->rx_buffer_list[EndIndex].status; - - if ( status & (RXSTATUS_SHORT_FRAME + RXSTATUS_OVERRUN + - RXSTATUS_CRC_ERROR + RXSTATUS_ABORT) ) { - if ( status & RXSTATUS_SHORT_FRAME ) - info->icount.rxshort++; - else if ( status & RXSTATUS_ABORT ) - info->icount.rxabort++; - else if ( status & RXSTATUS_OVERRUN ) - info->icount.rxover++; - else { - info->icount.rxcrc++; - if ( info->params.crc_type & HDLC_CRC_RETURN_EX ) - return_frame = true; - } - framesize = 0; -#if SYNCLINK_GENERIC_HDLC - { - info->netdev->stats.rx_errors++; - info->netdev->stats.rx_frame_errors++; - } -#endif - } else - return_frame = true; - - if ( return_frame ) { - /* receive frame has no errors, get frame size. - * The frame size is the starting value of the RCC (which was - * set to 0xffff) minus the ending value of the RCC (decremented - * once for each receive character) minus 2 for the 16-bit CRC. - */ - - framesize = RCLRVALUE - info->rx_buffer_list[EndIndex].rcc; - - /* adjust frame size for CRC if any */ - if ( info->params.crc_type == HDLC_CRC_16_CCITT ) - framesize -= 2; - else if ( info->params.crc_type == HDLC_CRC_32_CCITT ) - framesize -= 4; - } - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk("%s(%d):mgsl_get_rx_frame(%s) status=%04X size=%d\n", - __FILE__,__LINE__,info->device_name,status,framesize); - - if ( debug_level >= DEBUG_LEVEL_DATA ) - mgsl_trace_block(info,info->rx_buffer_list[StartIndex].virt_addr, - min_t(int, framesize, DMABUFFERSIZE),0); - - if (framesize) { - if ( ( (info->params.crc_type & HDLC_CRC_RETURN_EX) && - ((framesize+1) > info->max_frame_size) ) || - (framesize > info->max_frame_size) ) - info->icount.rxlong++; - else { - /* copy dma buffer(s) to contiguous intermediate buffer */ - int copy_count = framesize; - int index = StartIndex; - unsigned char *ptmp = info->intermediate_rxbuffer; - - if ( !(status & RXSTATUS_CRC_ERROR)) - info->icount.rxok++; - - while(copy_count) { - int partial_count; - if ( copy_count > DMABUFFERSIZE ) - partial_count = DMABUFFERSIZE; - else - partial_count = copy_count; - - pBufEntry = &(info->rx_buffer_list[index]); - memcpy( ptmp, pBufEntry->virt_addr, partial_count ); - ptmp += partial_count; - copy_count -= partial_count; - - if ( ++index == info->rx_buffer_count ) - index = 0; - } - - if ( info->params.crc_type & HDLC_CRC_RETURN_EX ) { - ++framesize; - *ptmp = (status & RXSTATUS_CRC_ERROR ? - RX_CRC_ERROR : - RX_OK); - - if ( debug_level >= DEBUG_LEVEL_DATA ) - printk("%s(%d):mgsl_get_rx_frame(%s) rx frame status=%d\n", - __FILE__,__LINE__,info->device_name, - *ptmp); - } - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_rx(info,info->intermediate_rxbuffer,framesize); - else -#endif - ldisc_receive_buf(tty, info->intermediate_rxbuffer, info->flag_buf, framesize); - } - } - /* Free the buffers used by this frame. */ - mgsl_free_rx_frame_buffers( info, StartIndex, EndIndex ); - - ReturnCode = true; - -Cleanup: - - if ( info->rx_enabled && info->rx_overflow ) { - /* The receiver needs to restarted because of - * a receive overflow (buffer or FIFO). If the - * receive buffers are now empty, then restart receiver. - */ - - if ( !info->rx_buffer_list[EndIndex].status && - info->rx_buffer_list[EndIndex].count ) { - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_start_receiver(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } - } - - return ReturnCode; - -} /* end of mgsl_get_rx_frame() */ - -/* mgsl_get_raw_rx_frame() - * - * This function attempts to return a received frame from the - * receive DMA buffers when running in external loop mode. In this mode, - * we will return at most one DMABUFFERSIZE frame to the application. - * The USC receiver is triggering off of DCD going active to start a new - * frame, and DCD going inactive to terminate the frame (similar to - * processing a closing flag character). - * - * In this routine, we will return DMABUFFERSIZE "chunks" at a time. - * If DCD goes inactive, the last Rx DMA Buffer will have a non-zero - * status field and the RCC field will indicate the length of the - * entire received frame. We take this RCC field and get the modulus - * of RCC and DMABUFFERSIZE to determine if number of bytes in the - * last Rx DMA buffer and return that last portion of the frame. - * - * Arguments: info pointer to device extension - * Return Value: true if frame returned, otherwise false - */ -static bool mgsl_get_raw_rx_frame(struct mgsl_struct *info) -{ - unsigned int CurrentIndex, NextIndex; - unsigned short status; - DMABUFFERENTRY *pBufEntry; - unsigned int framesize = 0; - bool ReturnCode = false; - unsigned long flags; - struct tty_struct *tty = info->port.tty; - - /* - * current_rx_buffer points to the 1st buffer of the next available - * receive frame. The status field is set by the 16C32 after - * completing a receive frame. If the status field of this buffer - * is zero, either the USC is still filling this buffer or this - * is one of a series of buffers making up a received frame. - * - * If the count field of this buffer is zero, the USC is either - * using this buffer or has used this buffer. Look at the count - * field of the next buffer. If that next buffer's count is - * non-zero, the USC is still actively using the current buffer. - * Otherwise, if the next buffer's count field is zero, the - * current buffer is complete and the USC is using the next - * buffer. - */ - CurrentIndex = NextIndex = info->current_rx_buffer; - ++NextIndex; - if ( NextIndex == info->rx_buffer_count ) - NextIndex = 0; - - if ( info->rx_buffer_list[CurrentIndex].status != 0 || - (info->rx_buffer_list[CurrentIndex].count == 0 && - info->rx_buffer_list[NextIndex].count == 0)) { - /* - * Either the status field of this dma buffer is non-zero - * (indicating the last buffer of a receive frame) or the next - * buffer is marked as in use -- implying this buffer is complete - * and an intermediate buffer for this received frame. - */ - - status = info->rx_buffer_list[CurrentIndex].status; - - if ( status & (RXSTATUS_SHORT_FRAME + RXSTATUS_OVERRUN + - RXSTATUS_CRC_ERROR + RXSTATUS_ABORT) ) { - if ( status & RXSTATUS_SHORT_FRAME ) - info->icount.rxshort++; - else if ( status & RXSTATUS_ABORT ) - info->icount.rxabort++; - else if ( status & RXSTATUS_OVERRUN ) - info->icount.rxover++; - else - info->icount.rxcrc++; - framesize = 0; - } else { - /* - * A receive frame is available, get frame size and status. - * - * The frame size is the starting value of the RCC (which was - * set to 0xffff) minus the ending value of the RCC (decremented - * once for each receive character) minus 2 or 4 for the 16-bit - * or 32-bit CRC. - * - * If the status field is zero, this is an intermediate buffer. - * It's size is 4K. - * - * If the DMA Buffer Entry's Status field is non-zero, the - * receive operation completed normally (ie: DCD dropped). The - * RCC field is valid and holds the received frame size. - * It is possible that the RCC field will be zero on a DMA buffer - * entry with a non-zero status. This can occur if the total - * frame size (number of bytes between the time DCD goes active - * to the time DCD goes inactive) exceeds 65535 bytes. In this - * case the 16C32 has underrun on the RCC count and appears to - * stop updating this counter to let us know the actual received - * frame size. If this happens (non-zero status and zero RCC), - * simply return the entire RxDMA Buffer - */ - if ( status ) { - /* - * In the event that the final RxDMA Buffer is - * terminated with a non-zero status and the RCC - * field is zero, we interpret this as the RCC - * having underflowed (received frame > 65535 bytes). - * - * Signal the event to the user by passing back - * a status of RxStatus_CrcError returning the full - * buffer and let the app figure out what data is - * actually valid - */ - if ( info->rx_buffer_list[CurrentIndex].rcc ) - framesize = RCLRVALUE - info->rx_buffer_list[CurrentIndex].rcc; - else - framesize = DMABUFFERSIZE; - } - else - framesize = DMABUFFERSIZE; - } - - if ( framesize > DMABUFFERSIZE ) { - /* - * if running in raw sync mode, ISR handler for - * End Of Buffer events terminates all buffers at 4K. - * If this frame size is said to be >4K, get the - * actual number of bytes of the frame in this buffer. - */ - framesize = framesize % DMABUFFERSIZE; - } - - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk("%s(%d):mgsl_get_raw_rx_frame(%s) status=%04X size=%d\n", - __FILE__,__LINE__,info->device_name,status,framesize); - - if ( debug_level >= DEBUG_LEVEL_DATA ) - mgsl_trace_block(info,info->rx_buffer_list[CurrentIndex].virt_addr, - min_t(int, framesize, DMABUFFERSIZE),0); - - if (framesize) { - /* copy dma buffer(s) to contiguous intermediate buffer */ - /* NOTE: we never copy more than DMABUFFERSIZE bytes */ - - pBufEntry = &(info->rx_buffer_list[CurrentIndex]); - memcpy( info->intermediate_rxbuffer, pBufEntry->virt_addr, framesize); - info->icount.rxok++; - - ldisc_receive_buf(tty, info->intermediate_rxbuffer, info->flag_buf, framesize); - } - - /* Free the buffers used by this frame. */ - mgsl_free_rx_frame_buffers( info, CurrentIndex, CurrentIndex ); - - ReturnCode = true; - } - - - if ( info->rx_enabled && info->rx_overflow ) { - /* The receiver needs to restarted because of - * a receive overflow (buffer or FIFO). If the - * receive buffers are now empty, then restart receiver. - */ - - if ( !info->rx_buffer_list[CurrentIndex].status && - info->rx_buffer_list[CurrentIndex].count ) { - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_start_receiver(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } - } - - return ReturnCode; - -} /* end of mgsl_get_raw_rx_frame() */ - -/* mgsl_load_tx_dma_buffer() - * - * Load the transmit DMA buffer with the specified data. - * - * Arguments: - * - * info pointer to device extension - * Buffer pointer to buffer containing frame to load - * BufferSize size in bytes of frame in Buffer - * - * Return Value: None - */ -static void mgsl_load_tx_dma_buffer(struct mgsl_struct *info, - const char *Buffer, unsigned int BufferSize) -{ - unsigned short Copycount; - unsigned int i = 0; - DMABUFFERENTRY *pBufEntry; - - if ( debug_level >= DEBUG_LEVEL_DATA ) - mgsl_trace_block(info,Buffer, min_t(int, BufferSize, DMABUFFERSIZE), 1); - - if (info->params.flags & HDLC_FLAG_HDLC_LOOPMODE) { - /* set CMR:13 to start transmit when - * next GoAhead (abort) is received - */ - info->cmr_value |= BIT13; - } - - /* begin loading the frame in the next available tx dma - * buffer, remember it's starting location for setting - * up tx dma operation - */ - i = info->current_tx_buffer; - info->start_tx_dma_buffer = i; - - /* Setup the status and RCC (Frame Size) fields of the 1st */ - /* buffer entry in the transmit DMA buffer list. */ - - info->tx_buffer_list[i].status = info->cmr_value & 0xf000; - info->tx_buffer_list[i].rcc = BufferSize; - info->tx_buffer_list[i].count = BufferSize; - - /* Copy frame data from 1st source buffer to the DMA buffers. */ - /* The frame data may span multiple DMA buffers. */ - - while( BufferSize ){ - /* Get a pointer to next DMA buffer entry. */ - pBufEntry = &info->tx_buffer_list[i++]; - - if ( i == info->tx_buffer_count ) - i=0; - - /* Calculate the number of bytes that can be copied from */ - /* the source buffer to this DMA buffer. */ - if ( BufferSize > DMABUFFERSIZE ) - Copycount = DMABUFFERSIZE; - else - Copycount = BufferSize; - - /* Actually copy data from source buffer to DMA buffer. */ - /* Also set the data count for this individual DMA buffer. */ - if ( info->bus_type == MGSL_BUS_TYPE_PCI ) - mgsl_load_pci_memory(pBufEntry->virt_addr, Buffer,Copycount); - else - memcpy(pBufEntry->virt_addr, Buffer, Copycount); - - pBufEntry->count = Copycount; - - /* Advance source pointer and reduce remaining data count. */ - Buffer += Copycount; - BufferSize -= Copycount; - - ++info->tx_dma_buffers_used; - } - - /* remember next available tx dma buffer */ - info->current_tx_buffer = i; - -} /* end of mgsl_load_tx_dma_buffer() */ - -/* - * mgsl_register_test() - * - * Performs a register test of the 16C32. - * - * Arguments: info pointer to device instance data - * Return Value: true if test passed, otherwise false - */ -static bool mgsl_register_test( struct mgsl_struct *info ) -{ - static unsigned short BitPatterns[] = - { 0x0000, 0xffff, 0xaaaa, 0x5555, 0x1234, 0x6969, 0x9696, 0x0f0f }; - static unsigned int Patterncount = ARRAY_SIZE(BitPatterns); - unsigned int i; - bool rc = true; - unsigned long flags; - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_reset(info); - - /* Verify the reset state of some registers. */ - - if ( (usc_InReg( info, SICR ) != 0) || - (usc_InReg( info, IVR ) != 0) || - (usc_InDmaReg( info, DIVR ) != 0) ){ - rc = false; - } - - if ( rc ){ - /* Write bit patterns to various registers but do it out of */ - /* sync, then read back and verify values. */ - - for ( i = 0 ; i < Patterncount ; i++ ) { - usc_OutReg( info, TC0R, BitPatterns[i] ); - usc_OutReg( info, TC1R, BitPatterns[(i+1)%Patterncount] ); - usc_OutReg( info, TCLR, BitPatterns[(i+2)%Patterncount] ); - usc_OutReg( info, RCLR, BitPatterns[(i+3)%Patterncount] ); - usc_OutReg( info, RSR, BitPatterns[(i+4)%Patterncount] ); - usc_OutDmaReg( info, TBCR, BitPatterns[(i+5)%Patterncount] ); - - if ( (usc_InReg( info, TC0R ) != BitPatterns[i]) || - (usc_InReg( info, TC1R ) != BitPatterns[(i+1)%Patterncount]) || - (usc_InReg( info, TCLR ) != BitPatterns[(i+2)%Patterncount]) || - (usc_InReg( info, RCLR ) != BitPatterns[(i+3)%Patterncount]) || - (usc_InReg( info, RSR ) != BitPatterns[(i+4)%Patterncount]) || - (usc_InDmaReg( info, TBCR ) != BitPatterns[(i+5)%Patterncount]) ){ - rc = false; - break; - } - } - } - - usc_reset(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - return rc; - -} /* end of mgsl_register_test() */ - -/* mgsl_irq_test() Perform interrupt test of the 16C32. - * - * Arguments: info pointer to device instance data - * Return Value: true if test passed, otherwise false - */ -static bool mgsl_irq_test( struct mgsl_struct *info ) -{ - unsigned long EndTime; - unsigned long flags; - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_reset(info); - - /* - * Setup 16C32 to interrupt on TxC pin (14MHz clock) transition. - * The ISR sets irq_occurred to true. - */ - - info->irq_occurred = false; - - /* Enable INTEN gate for ISA adapter (Port 6, Bit12) */ - /* Enable INTEN (Port 6, Bit12) */ - /* This connects the IRQ request signal to the ISA bus */ - /* on the ISA adapter. This has no effect for the PCI adapter */ - usc_OutReg( info, PCR, (unsigned short)((usc_InReg(info, PCR) | BIT13) & ~BIT12) ); - - usc_EnableMasterIrqBit(info); - usc_EnableInterrupts(info, IO_PIN); - usc_ClearIrqPendingBits(info, IO_PIN); - - usc_UnlatchIostatusBits(info, MISCSTATUS_TXC_LATCHED); - usc_EnableStatusIrqs(info, SICR_TXC_ACTIVE + SICR_TXC_INACTIVE); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - EndTime=100; - while( EndTime-- && !info->irq_occurred ) { - msleep_interruptible(10); - } - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_reset(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - return info->irq_occurred; - -} /* end of mgsl_irq_test() */ - -/* mgsl_dma_test() - * - * Perform a DMA test of the 16C32. A small frame is - * transmitted via DMA from a transmit buffer to a receive buffer - * using single buffer DMA mode. - * - * Arguments: info pointer to device instance data - * Return Value: true if test passed, otherwise false - */ -static bool mgsl_dma_test( struct mgsl_struct *info ) -{ - unsigned short FifoLevel; - unsigned long phys_addr; - unsigned int FrameSize; - unsigned int i; - char *TmpPtr; - bool rc = true; - unsigned short status=0; - unsigned long EndTime; - unsigned long flags; - MGSL_PARAMS tmp_params; - - /* save current port options */ - memcpy(&tmp_params,&info->params,sizeof(MGSL_PARAMS)); - /* load default port options */ - memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); - -#define TESTFRAMESIZE 40 - - spin_lock_irqsave(&info->irq_spinlock,flags); - - /* setup 16C32 for SDLC DMA transfer mode */ - - usc_reset(info); - usc_set_sdlc_mode(info); - usc_enable_loopback(info,1); - - /* Reprogram the RDMR so that the 16C32 does NOT clear the count - * field of the buffer entry after fetching buffer address. This - * way we can detect a DMA failure for a DMA read (which should be - * non-destructive to system memory) before we try and write to - * memory (where a failure could corrupt system memory). - */ - - /* Receive DMA mode Register (RDMR) - * - * <15..14> 11 DMA mode = Linked List Buffer mode - * <13> 1 RSBinA/L = store Rx status Block in List entry - * <12> 0 1 = Clear count of List Entry after fetching - * <11..10> 00 Address mode = Increment - * <9> 1 Terminate Buffer on RxBound - * <8> 0 Bus Width = 16bits - * <7..0> ? status Bits (write as 0s) - * - * 1110 0010 0000 0000 = 0xe200 - */ - - usc_OutDmaReg( info, RDMR, 0xe200 ); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - - /* SETUP TRANSMIT AND RECEIVE DMA BUFFERS */ - - FrameSize = TESTFRAMESIZE; - - /* setup 1st transmit buffer entry: */ - /* with frame size and transmit control word */ - - info->tx_buffer_list[0].count = FrameSize; - info->tx_buffer_list[0].rcc = FrameSize; - info->tx_buffer_list[0].status = 0x4000; - - /* build a transmit frame in 1st transmit DMA buffer */ - - TmpPtr = info->tx_buffer_list[0].virt_addr; - for (i = 0; i < FrameSize; i++ ) - *TmpPtr++ = i; - - /* setup 1st receive buffer entry: */ - /* clear status, set max receive buffer size */ - - info->rx_buffer_list[0].status = 0; - info->rx_buffer_list[0].count = FrameSize + 4; - - /* zero out the 1st receive buffer */ - - memset( info->rx_buffer_list[0].virt_addr, 0, FrameSize + 4 ); - - /* Set count field of next buffer entries to prevent */ - /* 16C32 from using buffers after the 1st one. */ - - info->tx_buffer_list[1].count = 0; - info->rx_buffer_list[1].count = 0; - - - /***************************/ - /* Program 16C32 receiver. */ - /***************************/ - - spin_lock_irqsave(&info->irq_spinlock,flags); - - /* setup DMA transfers */ - usc_RTCmd( info, RTCmd_PurgeRxFifo ); - - /* program 16C32 receiver with physical address of 1st DMA buffer entry */ - phys_addr = info->rx_buffer_list[0].phys_entry; - usc_OutDmaReg( info, NRARL, (unsigned short)phys_addr ); - usc_OutDmaReg( info, NRARU, (unsigned short)(phys_addr >> 16) ); - - /* Clear the Rx DMA status bits (read RDMR) and start channel */ - usc_InDmaReg( info, RDMR ); - usc_DmaCmd( info, DmaCmd_InitRxChannel ); - - /* Enable Receiver (RMR <1..0> = 10) */ - usc_OutReg( info, RMR, (unsigned short)((usc_InReg(info, RMR) & 0xfffc) | 0x0002) ); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - - /*************************************************************/ - /* WAIT FOR RECEIVER TO DMA ALL PARAMETERS FROM BUFFER ENTRY */ - /*************************************************************/ - - /* Wait 100ms for interrupt. */ - EndTime = jiffies + msecs_to_jiffies(100); - - for(;;) { - if (time_after(jiffies, EndTime)) { - rc = false; - break; - } - - spin_lock_irqsave(&info->irq_spinlock,flags); - status = usc_InDmaReg( info, RDMR ); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - if ( !(status & BIT4) && (status & BIT5) ) { - /* INITG (BIT 4) is inactive (no entry read in progress) AND */ - /* BUSY (BIT 5) is active (channel still active). */ - /* This means the buffer entry read has completed. */ - break; - } - } - - - /******************************/ - /* Program 16C32 transmitter. */ - /******************************/ - - spin_lock_irqsave(&info->irq_spinlock,flags); - - /* Program the Transmit Character Length Register (TCLR) */ - /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */ - - usc_OutReg( info, TCLR, (unsigned short)info->tx_buffer_list[0].count ); - usc_RTCmd( info, RTCmd_PurgeTxFifo ); - - /* Program the address of the 1st DMA Buffer Entry in linked list */ - - phys_addr = info->tx_buffer_list[0].phys_entry; - usc_OutDmaReg( info, NTARL, (unsigned short)phys_addr ); - usc_OutDmaReg( info, NTARU, (unsigned short)(phys_addr >> 16) ); - - /* unlatch Tx status bits, and start transmit channel. */ - - usc_OutReg( info, TCSR, (unsigned short)(( usc_InReg(info, TCSR) & 0x0f00) | 0xfa) ); - usc_DmaCmd( info, DmaCmd_InitTxChannel ); - - /* wait for DMA controller to fill transmit FIFO */ - - usc_TCmd( info, TCmd_SelectTicrTxFifostatus ); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - - /**********************************/ - /* WAIT FOR TRANSMIT FIFO TO FILL */ - /**********************************/ - - /* Wait 100ms */ - EndTime = jiffies + msecs_to_jiffies(100); - - for(;;) { - if (time_after(jiffies, EndTime)) { - rc = false; - break; - } - - spin_lock_irqsave(&info->irq_spinlock,flags); - FifoLevel = usc_InReg(info, TICR) >> 8; - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - if ( FifoLevel < 16 ) - break; - else - if ( FrameSize < 32 ) { - /* This frame is smaller than the entire transmit FIFO */ - /* so wait for the entire frame to be loaded. */ - if ( FifoLevel <= (32 - FrameSize) ) - break; - } - } - - - if ( rc ) - { - /* Enable 16C32 transmitter. */ - - spin_lock_irqsave(&info->irq_spinlock,flags); - - /* Transmit mode Register (TMR), <1..0> = 10, Enable Transmitter */ - usc_TCmd( info, TCmd_SendFrame ); - usc_OutReg( info, TMR, (unsigned short)((usc_InReg(info, TMR) & 0xfffc) | 0x0002) ); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - - /******************************/ - /* WAIT FOR TRANSMIT COMPLETE */ - /******************************/ - - /* Wait 100ms */ - EndTime = jiffies + msecs_to_jiffies(100); - - /* While timer not expired wait for transmit complete */ - - spin_lock_irqsave(&info->irq_spinlock,flags); - status = usc_InReg( info, TCSR ); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - while ( !(status & (BIT6+BIT5+BIT4+BIT2+BIT1)) ) { - if (time_after(jiffies, EndTime)) { - rc = false; - break; - } - - spin_lock_irqsave(&info->irq_spinlock,flags); - status = usc_InReg( info, TCSR ); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - } - } - - - if ( rc ){ - /* CHECK FOR TRANSMIT ERRORS */ - if ( status & (BIT5 + BIT1) ) - rc = false; - } - - if ( rc ) { - /* WAIT FOR RECEIVE COMPLETE */ - - /* Wait 100ms */ - EndTime = jiffies + msecs_to_jiffies(100); - - /* Wait for 16C32 to write receive status to buffer entry. */ - status=info->rx_buffer_list[0].status; - while ( status == 0 ) { - if (time_after(jiffies, EndTime)) { - rc = false; - break; - } - status=info->rx_buffer_list[0].status; - } - } - - - if ( rc ) { - /* CHECK FOR RECEIVE ERRORS */ - status = info->rx_buffer_list[0].status; - - if ( status & (BIT8 + BIT3 + BIT1) ) { - /* receive error has occurred */ - rc = false; - } else { - if ( memcmp( info->tx_buffer_list[0].virt_addr , - info->rx_buffer_list[0].virt_addr, FrameSize ) ){ - rc = false; - } - } - } - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_reset( info ); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - /* restore current port options */ - memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); - - return rc; - -} /* end of mgsl_dma_test() */ - -/* mgsl_adapter_test() - * - * Perform the register, IRQ, and DMA tests for the 16C32. - * - * Arguments: info pointer to device instance data - * Return Value: 0 if success, otherwise -ENODEV - */ -static int mgsl_adapter_test( struct mgsl_struct *info ) -{ - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):Testing device %s\n", - __FILE__,__LINE__,info->device_name ); - - if ( !mgsl_register_test( info ) ) { - info->init_error = DiagStatus_AddressFailure; - printk( "%s(%d):Register test failure for device %s Addr=%04X\n", - __FILE__,__LINE__,info->device_name, (unsigned short)(info->io_base) ); - return -ENODEV; - } - - if ( !mgsl_irq_test( info ) ) { - info->init_error = DiagStatus_IrqFailure; - printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", - __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); - return -ENODEV; - } - - if ( !mgsl_dma_test( info ) ) { - info->init_error = DiagStatus_DmaFailure; - printk( "%s(%d):DMA test failure for device %s DMA=%d\n", - __FILE__,__LINE__,info->device_name, (unsigned short)(info->dma_level) ); - return -ENODEV; - } - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):device %s passed diagnostics\n", - __FILE__,__LINE__,info->device_name ); - - return 0; - -} /* end of mgsl_adapter_test() */ - -/* mgsl_memory_test() - * - * Test the shared memory on a PCI adapter. - * - * Arguments: info pointer to device instance data - * Return Value: true if test passed, otherwise false - */ -static bool mgsl_memory_test( struct mgsl_struct *info ) -{ - static unsigned long BitPatterns[] = - { 0x0, 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999, 0xffffffff, 0x12345678 }; - unsigned long Patterncount = ARRAY_SIZE(BitPatterns); - unsigned long i; - unsigned long TestLimit = SHARED_MEM_ADDRESS_SIZE/sizeof(unsigned long); - unsigned long * TestAddr; - - if ( info->bus_type != MGSL_BUS_TYPE_PCI ) - return true; - - TestAddr = (unsigned long *)info->memory_base; - - /* Test data lines with test pattern at one location. */ - - for ( i = 0 ; i < Patterncount ; i++ ) { - *TestAddr = BitPatterns[i]; - if ( *TestAddr != BitPatterns[i] ) - return false; - } - - /* Test address lines with incrementing pattern over */ - /* entire address range. */ - - for ( i = 0 ; i < TestLimit ; i++ ) { - *TestAddr = i * 4; - TestAddr++; - } - - TestAddr = (unsigned long *)info->memory_base; - - for ( i = 0 ; i < TestLimit ; i++ ) { - if ( *TestAddr != i * 4 ) - return false; - TestAddr++; - } - - memset( info->memory_base, 0, SHARED_MEM_ADDRESS_SIZE ); - - return true; - -} /* End Of mgsl_memory_test() */ - - -/* mgsl_load_pci_memory() - * - * Load a large block of data into the PCI shared memory. - * Use this instead of memcpy() or memmove() to move data - * into the PCI shared memory. - * - * Notes: - * - * This function prevents the PCI9050 interface chip from hogging - * the adapter local bus, which can starve the 16C32 by preventing - * 16C32 bus master cycles. - * - * The PCI9050 documentation says that the 9050 will always release - * control of the local bus after completing the current read - * or write operation. - * - * It appears that as long as the PCI9050 write FIFO is full, the - * PCI9050 treats all of the writes as a single burst transaction - * and will not release the bus. This causes DMA latency problems - * at high speeds when copying large data blocks to the shared - * memory. - * - * This function in effect, breaks the a large shared memory write - * into multiple transations by interleaving a shared memory read - * which will flush the write FIFO and 'complete' the write - * transation. This allows any pending DMA request to gain control - * of the local bus in a timely fasion. - * - * Arguments: - * - * TargetPtr pointer to target address in PCI shared memory - * SourcePtr pointer to source buffer for data - * count count in bytes of data to copy - * - * Return Value: None - */ -static void mgsl_load_pci_memory( char* TargetPtr, const char* SourcePtr, - unsigned short count ) -{ - /* 16 32-bit writes @ 60ns each = 960ns max latency on local bus */ -#define PCI_LOAD_INTERVAL 64 - - unsigned short Intervalcount = count / PCI_LOAD_INTERVAL; - unsigned short Index; - unsigned long Dummy; - - for ( Index = 0 ; Index < Intervalcount ; Index++ ) - { - memcpy(TargetPtr, SourcePtr, PCI_LOAD_INTERVAL); - Dummy = *((volatile unsigned long *)TargetPtr); - TargetPtr += PCI_LOAD_INTERVAL; - SourcePtr += PCI_LOAD_INTERVAL; - } - - memcpy( TargetPtr, SourcePtr, count % PCI_LOAD_INTERVAL ); - -} /* End Of mgsl_load_pci_memory() */ - -static void mgsl_trace_block(struct mgsl_struct *info,const char* data, int count, int xmit) -{ - int i; - int linecount; - if (xmit) - printk("%s tx data:\n",info->device_name); - else - printk("%s rx data:\n",info->device_name); - - while(count) { - if (count > 16) - linecount = 16; - else - linecount = count; - - for(i=0;i=040 && data[i]<=0176) - printk("%c",data[i]); - else - printk("."); - } - printk("\n"); - - data += linecount; - count -= linecount; - } -} /* end of mgsl_trace_block() */ - -/* mgsl_tx_timeout() - * - * called when HDLC frame times out - * update stats and do tx completion processing - * - * Arguments: context pointer to device instance data - * Return Value: None - */ -static void mgsl_tx_timeout(unsigned long context) -{ - struct mgsl_struct *info = (struct mgsl_struct*)context; - unsigned long flags; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):mgsl_tx_timeout(%s)\n", - __FILE__,__LINE__,info->device_name); - if(info->tx_active && - (info->params.mode == MGSL_MODE_HDLC || - info->params.mode == MGSL_MODE_RAW) ) { - info->icount.txtimeout++; - } - spin_lock_irqsave(&info->irq_spinlock,flags); - info->tx_active = false; - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - - if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) - usc_loopmode_cancel_transmit( info ); - - spin_unlock_irqrestore(&info->irq_spinlock,flags); - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_tx_done(info); - else -#endif - mgsl_bh_transmit(info); - -} /* end of mgsl_tx_timeout() */ - -/* signal that there are no more frames to send, so that - * line is 'released' by echoing RxD to TxD when current - * transmission is complete (or immediately if no tx in progress). - */ -static int mgsl_loopmode_send_done( struct mgsl_struct * info ) -{ - unsigned long flags; - - spin_lock_irqsave(&info->irq_spinlock,flags); - if (info->params.flags & HDLC_FLAG_HDLC_LOOPMODE) { - if (info->tx_active) - info->loopmode_send_done_requested = true; - else - usc_loopmode_send_done(info); - } - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - return 0; -} - -/* release the line by echoing RxD to TxD - * upon completion of a transmit frame - */ -static void usc_loopmode_send_done( struct mgsl_struct * info ) -{ - info->loopmode_send_done_requested = false; - /* clear CMR:13 to 0 to start echoing RxData to TxData */ - info->cmr_value &= ~BIT13; - usc_OutReg(info, CMR, info->cmr_value); -} - -/* abort a transmit in progress while in HDLC LoopMode - */ -static void usc_loopmode_cancel_transmit( struct mgsl_struct * info ) -{ - /* reset tx dma channel and purge TxFifo */ - usc_RTCmd( info, RTCmd_PurgeTxFifo ); - usc_DmaCmd( info, DmaCmd_ResetTxChannel ); - usc_loopmode_send_done( info ); -} - -/* for HDLC/SDLC LoopMode, setting CMR:13 after the transmitter is enabled - * is an Insert Into Loop action. Upon receipt of a GoAhead sequence (RxAbort) - * we must clear CMR:13 to begin repeating TxData to RxData - */ -static void usc_loopmode_insert_request( struct mgsl_struct * info ) -{ - info->loopmode_insert_requested = true; - - /* enable RxAbort irq. On next RxAbort, clear CMR:13 to - * begin repeating TxData on RxData (complete insertion) - */ - usc_OutReg( info, RICR, - (usc_InReg( info, RICR ) | RXSTATUS_ABORT_RECEIVED ) ); - - /* set CMR:13 to insert into loop on next GoAhead (RxAbort) */ - info->cmr_value |= BIT13; - usc_OutReg(info, CMR, info->cmr_value); -} - -/* return 1 if station is inserted into the loop, otherwise 0 - */ -static int usc_loopmode_active( struct mgsl_struct * info) -{ - return usc_InReg( info, CCSR ) & BIT7 ? 1 : 0 ; -} - -#if SYNCLINK_GENERIC_HDLC - -/** - * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) - * set encoding and frame check sequence (FCS) options - * - * dev pointer to network device structure - * encoding serial encoding setting - * parity FCS setting - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, - unsigned short parity) -{ - struct mgsl_struct *info = dev_to_port(dev); - unsigned char new_encoding; - unsigned short new_crctype; - - /* return error if TTY interface open */ - if (info->port.count) - return -EBUSY; - - switch (encoding) - { - case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; - case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; - case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; - case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; - case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; - default: return -EINVAL; - } - - switch (parity) - { - case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; - case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; - case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; - default: return -EINVAL; - } - - info->params.encoding = new_encoding; - info->params.crc_type = new_crctype; - - /* if network interface up, reprogram hardware */ - if (info->netcount) - mgsl_program_hw(info); - - return 0; -} - -/** - * called by generic HDLC layer to send frame - * - * skb socket buffer containing HDLC frame - * dev pointer to network device structure - */ -static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct mgsl_struct *info = dev_to_port(dev); - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); - - /* stop sending until this frame completes */ - netif_stop_queue(dev); - - /* copy data to device buffers */ - info->xmit_cnt = skb->len; - mgsl_load_tx_dma_buffer(info, skb->data, skb->len); - - /* update network statistics */ - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - - /* done with socket buffer, so free it */ - dev_kfree_skb(skb); - - /* save start time for transmit timeout detection */ - dev->trans_start = jiffies; - - /* start hardware transmitter if necessary */ - spin_lock_irqsave(&info->irq_spinlock,flags); - if (!info->tx_active) - usc_start_transmitter(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - return NETDEV_TX_OK; -} - -/** - * called by network layer when interface enabled - * claim resources and initialize hardware - * - * dev pointer to network device structure - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_open(struct net_device *dev) -{ - struct mgsl_struct *info = dev_to_port(dev); - int rc; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); - - /* generic HDLC layer open processing */ - if ((rc = hdlc_open(dev))) - return rc; - - /* arbitrate between network and tty opens */ - spin_lock_irqsave(&info->netlock, flags); - if (info->port.count != 0 || info->netcount != 0) { - printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); - spin_unlock_irqrestore(&info->netlock, flags); - return -EBUSY; - } - info->netcount=1; - spin_unlock_irqrestore(&info->netlock, flags); - - /* claim resources and init adapter */ - if ((rc = startup(info)) != 0) { - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - return rc; - } - - /* assert DTR and RTS, apply hardware settings */ - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - mgsl_program_hw(info); - - /* enable network layer transmit */ - dev->trans_start = jiffies; - netif_start_queue(dev); - - /* inform generic HDLC layer of current DCD status */ - spin_lock_irqsave(&info->irq_spinlock, flags); - usc_get_serial_signals(info); - spin_unlock_irqrestore(&info->irq_spinlock, flags); - if (info->serial_signals & SerialSignal_DCD) - netif_carrier_on(dev); - else - netif_carrier_off(dev); - return 0; -} - -/** - * called by network layer when interface is disabled - * shutdown hardware and release resources - * - * dev pointer to network device structure - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_close(struct net_device *dev) -{ - struct mgsl_struct *info = dev_to_port(dev); - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); - - netif_stop_queue(dev); - - /* shutdown adapter and release resources */ - shutdown(info); - - hdlc_close(dev); - - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - - return 0; -} - -/** - * called by network layer to process IOCTL call to network device - * - * dev pointer to network device structure - * ifr pointer to network interface request structure - * cmd IOCTL command code - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - const size_t size = sizeof(sync_serial_settings); - sync_serial_settings new_line; - sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; - struct mgsl_struct *info = dev_to_port(dev); - unsigned int flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); - - /* return error if TTY interface open */ - if (info->port.count) - return -EBUSY; - - if (cmd != SIOCWANDEV) - return hdlc_ioctl(dev, ifr, cmd); - - switch(ifr->ifr_settings.type) { - case IF_GET_IFACE: /* return current sync_serial_settings */ - - ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; - if (ifr->ifr_settings.size < size) { - ifr->ifr_settings.size = size; /* data size wanted */ - return -ENOBUFS; - } - - flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); - - switch (flags){ - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; - case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; - default: new_line.clock_type = CLOCK_DEFAULT; - } - - new_line.clock_rate = info->params.clock_speed; - new_line.loopback = info->params.loopback ? 1:0; - - if (copy_to_user(line, &new_line, size)) - return -EFAULT; - return 0; - - case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ - - if(!capable(CAP_NET_ADMIN)) - return -EPERM; - if (copy_from_user(&new_line, line, size)) - return -EFAULT; - - switch (new_line.clock_type) - { - case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; - case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; - case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; - case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; - case CLOCK_DEFAULT: flags = info->params.flags & - (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; - default: return -EINVAL; - } - - if (new_line.loopback != 0 && new_line.loopback != 1) - return -EINVAL; - - info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); - info->params.flags |= flags; - - info->params.loopback = new_line.loopback; - - if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) - info->params.clock_speed = new_line.clock_rate; - else - info->params.clock_speed = 0; - - /* if network interface up, reprogram hardware */ - if (info->netcount) - mgsl_program_hw(info); - return 0; - - default: - return hdlc_ioctl(dev, ifr, cmd); - } -} - -/** - * called by network layer when transmit timeout is detected - * - * dev pointer to network device structure - */ -static void hdlcdev_tx_timeout(struct net_device *dev) -{ - struct mgsl_struct *info = dev_to_port(dev); - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("hdlcdev_tx_timeout(%s)\n",dev->name); - - dev->stats.tx_errors++; - dev->stats.tx_aborted_errors++; - - spin_lock_irqsave(&info->irq_spinlock,flags); - usc_stop_transmitter(info); - spin_unlock_irqrestore(&info->irq_spinlock,flags); - - netif_wake_queue(dev); -} - -/** - * called by device driver when transmit completes - * reenable network layer transmit if stopped - * - * info pointer to device instance information - */ -static void hdlcdev_tx_done(struct mgsl_struct *info) -{ - if (netif_queue_stopped(info->netdev)) - netif_wake_queue(info->netdev); -} - -/** - * called by device driver when frame received - * pass frame to network layer - * - * info pointer to device instance information - * buf pointer to buffer contianing frame data - * size count of data bytes in buf - */ -static void hdlcdev_rx(struct mgsl_struct *info, char *buf, int size) -{ - struct sk_buff *skb = dev_alloc_skb(size); - struct net_device *dev = info->netdev; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("hdlcdev_rx(%s)\n", dev->name); - - if (skb == NULL) { - printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", - dev->name); - dev->stats.rx_dropped++; - return; - } - - memcpy(skb_put(skb, size), buf, size); - - skb->protocol = hdlc_type_trans(skb, dev); - - dev->stats.rx_packets++; - dev->stats.rx_bytes += size; - - netif_rx(skb); -} - -static const struct net_device_ops hdlcdev_ops = { - .ndo_open = hdlcdev_open, - .ndo_stop = hdlcdev_close, - .ndo_change_mtu = hdlc_change_mtu, - .ndo_start_xmit = hdlc_start_xmit, - .ndo_do_ioctl = hdlcdev_ioctl, - .ndo_tx_timeout = hdlcdev_tx_timeout, -}; - -/** - * called by device driver when adding device instance - * do generic HDLC initialization - * - * info pointer to device instance information - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_init(struct mgsl_struct *info) -{ - int rc; - struct net_device *dev; - hdlc_device *hdlc; - - /* allocate and initialize network and HDLC layer objects */ - - if (!(dev = alloc_hdlcdev(info))) { - printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); - return -ENOMEM; - } - - /* for network layer reporting purposes only */ - dev->base_addr = info->io_base; - dev->irq = info->irq_level; - dev->dma = info->dma_level; - - /* network layer callbacks and settings */ - dev->netdev_ops = &hdlcdev_ops; - dev->watchdog_timeo = 10 * HZ; - dev->tx_queue_len = 50; - - /* generic HDLC layer callbacks and settings */ - hdlc = dev_to_hdlc(dev); - hdlc->attach = hdlcdev_attach; - hdlc->xmit = hdlcdev_xmit; - - /* register objects with HDLC layer */ - if ((rc = register_hdlc_device(dev))) { - printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); - free_netdev(dev); - return rc; - } - - info->netdev = dev; - return 0; -} - -/** - * called by device driver when removing device instance - * do generic HDLC cleanup - * - * info pointer to device instance information - */ -static void hdlcdev_exit(struct mgsl_struct *info) -{ - unregister_hdlc_device(info->netdev); - free_netdev(info->netdev); - info->netdev = NULL; -} - -#endif /* CONFIG_HDLC */ - - -static int __devinit synclink_init_one (struct pci_dev *dev, - const struct pci_device_id *ent) -{ - struct mgsl_struct *info; - - if (pci_enable_device(dev)) { - printk("error enabling pci device %p\n", dev); - return -EIO; - } - - if (!(info = mgsl_allocate_device())) { - printk("can't allocate device instance data.\n"); - return -EIO; - } - - /* Copy user configuration info to device instance data */ - - info->io_base = pci_resource_start(dev, 2); - info->irq_level = dev->irq; - info->phys_memory_base = pci_resource_start(dev, 3); - - /* Because veremap only works on page boundaries we must map - * a larger area than is actually implemented for the LCR - * memory range. We map a full page starting at the page boundary. - */ - info->phys_lcr_base = pci_resource_start(dev, 0); - info->lcr_offset = info->phys_lcr_base & (PAGE_SIZE-1); - info->phys_lcr_base &= ~(PAGE_SIZE-1); - - info->bus_type = MGSL_BUS_TYPE_PCI; - info->io_addr_size = 8; - info->irq_flags = IRQF_SHARED; - - if (dev->device == 0x0210) { - /* Version 1 PCI9030 based universal PCI adapter */ - info->misc_ctrl_value = 0x007c4080; - info->hw_version = 1; - } else { - /* Version 0 PCI9050 based 5V PCI adapter - * A PCI9050 bug prevents reading LCR registers if - * LCR base address bit 7 is set. Maintain shadow - * value so we can write to LCR misc control reg. - */ - info->misc_ctrl_value = 0x087e4546; - info->hw_version = 0; - } - - mgsl_add_device(info); - - return 0; -} - -static void __devexit synclink_remove_one (struct pci_dev *dev) -{ -} - diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c deleted file mode 100644 index a35dd549a008..000000000000 --- a/drivers/char/synclink_gt.c +++ /dev/null @@ -1,5161 +0,0 @@ -/* - * Device driver for Microgate SyncLink GT serial adapters. - * - * written by Paul Fulghum for Microgate Corporation - * paulkf@microgate.com - * - * Microgate and SyncLink are trademarks of Microgate Corporation - * - * This code is released under the GNU General Public License (GPL) - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* - * DEBUG OUTPUT DEFINITIONS - * - * uncomment lines below to enable specific types of debug output - * - * DBGINFO information - most verbose output - * DBGERR serious errors - * DBGBH bottom half service routine debugging - * DBGISR interrupt service routine debugging - * DBGDATA output receive and transmit data - * DBGTBUF output transmit DMA buffers and registers - * DBGRBUF output receive DMA buffers and registers - */ - -#define DBGINFO(fmt) if (debug_level >= DEBUG_LEVEL_INFO) printk fmt -#define DBGERR(fmt) if (debug_level >= DEBUG_LEVEL_ERROR) printk fmt -#define DBGBH(fmt) if (debug_level >= DEBUG_LEVEL_BH) printk fmt -#define DBGISR(fmt) if (debug_level >= DEBUG_LEVEL_ISR) printk fmt -#define DBGDATA(info, buf, size, label) if (debug_level >= DEBUG_LEVEL_DATA) trace_block((info), (buf), (size), (label)) -/*#define DBGTBUF(info) dump_tbufs(info)*/ -/*#define DBGRBUF(info) dump_rbufs(info)*/ - - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_GT_MODULE)) -#define SYNCLINK_GENERIC_HDLC 1 -#else -#define SYNCLINK_GENERIC_HDLC 0 -#endif - -/* - * module identification - */ -static char *driver_name = "SyncLink GT"; -static char *tty_driver_name = "synclink_gt"; -static char *tty_dev_prefix = "ttySLG"; -MODULE_LICENSE("GPL"); -#define MGSL_MAGIC 0x5401 -#define MAX_DEVICES 32 - -static struct pci_device_id pci_table[] = { - {PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, - {PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT2_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, - {PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT4_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, - {PCI_VENDOR_ID_MICROGATE, SYNCLINK_AC_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, - {0,}, /* terminate list */ -}; -MODULE_DEVICE_TABLE(pci, pci_table); - -static int init_one(struct pci_dev *dev,const struct pci_device_id *ent); -static void remove_one(struct pci_dev *dev); -static struct pci_driver pci_driver = { - .name = "synclink_gt", - .id_table = pci_table, - .probe = init_one, - .remove = __devexit_p(remove_one), -}; - -static bool pci_registered; - -/* - * module configuration and status - */ -static struct slgt_info *slgt_device_list; -static int slgt_device_count; - -static int ttymajor; -static int debug_level; -static int maxframe[MAX_DEVICES]; - -module_param(ttymajor, int, 0); -module_param(debug_level, int, 0); -module_param_array(maxframe, int, NULL, 0); - -MODULE_PARM_DESC(ttymajor, "TTY major device number override: 0=auto assigned"); -MODULE_PARM_DESC(debug_level, "Debug syslog output: 0=disabled, 1 to 5=increasing detail"); -MODULE_PARM_DESC(maxframe, "Maximum frame size used by device (4096 to 65535)"); - -/* - * tty support and callbacks - */ -static struct tty_driver *serial_driver; - -static int open(struct tty_struct *tty, struct file * filp); -static void close(struct tty_struct *tty, struct file * filp); -static void hangup(struct tty_struct *tty); -static void set_termios(struct tty_struct *tty, struct ktermios *old_termios); - -static int write(struct tty_struct *tty, const unsigned char *buf, int count); -static int put_char(struct tty_struct *tty, unsigned char ch); -static void send_xchar(struct tty_struct *tty, char ch); -static void wait_until_sent(struct tty_struct *tty, int timeout); -static int write_room(struct tty_struct *tty); -static void flush_chars(struct tty_struct *tty); -static void flush_buffer(struct tty_struct *tty); -static void tx_hold(struct tty_struct *tty); -static void tx_release(struct tty_struct *tty); - -static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); -static int chars_in_buffer(struct tty_struct *tty); -static void throttle(struct tty_struct * tty); -static void unthrottle(struct tty_struct * tty); -static int set_break(struct tty_struct *tty, int break_state); - -/* - * generic HDLC support and callbacks - */ -#if SYNCLINK_GENERIC_HDLC -#define dev_to_port(D) (dev_to_hdlc(D)->priv) -static void hdlcdev_tx_done(struct slgt_info *info); -static void hdlcdev_rx(struct slgt_info *info, char *buf, int size); -static int hdlcdev_init(struct slgt_info *info); -static void hdlcdev_exit(struct slgt_info *info); -#endif - - -/* - * device specific structures, macros and functions - */ - -#define SLGT_MAX_PORTS 4 -#define SLGT_REG_SIZE 256 - -/* - * conditional wait facility - */ -struct cond_wait { - struct cond_wait *next; - wait_queue_head_t q; - wait_queue_t wait; - unsigned int data; -}; -static void init_cond_wait(struct cond_wait *w, unsigned int data); -static void add_cond_wait(struct cond_wait **head, struct cond_wait *w); -static void remove_cond_wait(struct cond_wait **head, struct cond_wait *w); -static void flush_cond_wait(struct cond_wait **head); - -/* - * DMA buffer descriptor and access macros - */ -struct slgt_desc -{ - __le16 count; - __le16 status; - __le32 pbuf; /* physical address of data buffer */ - __le32 next; /* physical address of next descriptor */ - - /* driver book keeping */ - char *buf; /* virtual address of data buffer */ - unsigned int pdesc; /* physical address of this descriptor */ - dma_addr_t buf_dma_addr; - unsigned short buf_count; -}; - -#define set_desc_buffer(a,b) (a).pbuf = cpu_to_le32((unsigned int)(b)) -#define set_desc_next(a,b) (a).next = cpu_to_le32((unsigned int)(b)) -#define set_desc_count(a,b)(a).count = cpu_to_le16((unsigned short)(b)) -#define set_desc_eof(a,b) (a).status = cpu_to_le16((b) ? (le16_to_cpu((a).status) | BIT0) : (le16_to_cpu((a).status) & ~BIT0)) -#define set_desc_status(a, b) (a).status = cpu_to_le16((unsigned short)(b)) -#define desc_count(a) (le16_to_cpu((a).count)) -#define desc_status(a) (le16_to_cpu((a).status)) -#define desc_complete(a) (le16_to_cpu((a).status) & BIT15) -#define desc_eof(a) (le16_to_cpu((a).status) & BIT2) -#define desc_crc_error(a) (le16_to_cpu((a).status) & BIT1) -#define desc_abort(a) (le16_to_cpu((a).status) & BIT0) -#define desc_residue(a) ((le16_to_cpu((a).status) & 0x38) >> 3) - -struct _input_signal_events { - int ri_up; - int ri_down; - int dsr_up; - int dsr_down; - int dcd_up; - int dcd_down; - int cts_up; - int cts_down; -}; - -/* - * device instance data structure - */ -struct slgt_info { - void *if_ptr; /* General purpose pointer (used by SPPP) */ - struct tty_port port; - - struct slgt_info *next_device; /* device list link */ - - int magic; - - char device_name[25]; - struct pci_dev *pdev; - - int port_count; /* count of ports on adapter */ - int adapter_num; /* adapter instance number */ - int port_num; /* port instance number */ - - /* array of pointers to port contexts on this adapter */ - struct slgt_info *port_array[SLGT_MAX_PORTS]; - - int line; /* tty line instance number */ - - struct mgsl_icount icount; - - int timeout; - int x_char; /* xon/xoff character */ - unsigned int read_status_mask; - unsigned int ignore_status_mask; - - wait_queue_head_t status_event_wait_q; - wait_queue_head_t event_wait_q; - struct timer_list tx_timer; - struct timer_list rx_timer; - - unsigned int gpio_present; - struct cond_wait *gpio_wait_q; - - spinlock_t lock; /* spinlock for synchronizing with ISR */ - - struct work_struct task; - u32 pending_bh; - bool bh_requested; - bool bh_running; - - int isr_overflow; - bool irq_requested; /* true if IRQ requested */ - bool irq_occurred; /* for diagnostics use */ - - /* device configuration */ - - unsigned int bus_type; - unsigned int irq_level; - unsigned long irq_flags; - - unsigned char __iomem * reg_addr; /* memory mapped registers address */ - u32 phys_reg_addr; - bool reg_addr_requested; - - MGSL_PARAMS params; /* communications parameters */ - u32 idle_mode; - u32 max_frame_size; /* as set by device config */ - - unsigned int rbuf_fill_level; - unsigned int rx_pio; - unsigned int if_mode; - unsigned int base_clock; - unsigned int xsync; - unsigned int xctrl; - - /* device status */ - - bool rx_enabled; - bool rx_restart; - - bool tx_enabled; - bool tx_active; - - unsigned char signals; /* serial signal states */ - int init_error; /* initialization error */ - - unsigned char *tx_buf; - int tx_count; - - char flag_buf[MAX_ASYNC_BUFFER_SIZE]; - char char_buf[MAX_ASYNC_BUFFER_SIZE]; - bool drop_rts_on_tx_done; - struct _input_signal_events input_signal_events; - - int dcd_chkcount; /* check counts to prevent */ - int cts_chkcount; /* too many IRQs if a signal */ - int dsr_chkcount; /* is floating */ - int ri_chkcount; - - char *bufs; /* virtual address of DMA buffer lists */ - dma_addr_t bufs_dma_addr; /* physical address of buffer descriptors */ - - unsigned int rbuf_count; - struct slgt_desc *rbufs; - unsigned int rbuf_current; - unsigned int rbuf_index; - unsigned int rbuf_fill_index; - unsigned short rbuf_fill_count; - - unsigned int tbuf_count; - struct slgt_desc *tbufs; - unsigned int tbuf_current; - unsigned int tbuf_start; - - unsigned char *tmp_rbuf; - unsigned int tmp_rbuf_count; - - /* SPPP/Cisco HDLC device parts */ - - int netcount; - spinlock_t netlock; -#if SYNCLINK_GENERIC_HDLC - struct net_device *netdev; -#endif - -}; - -static MGSL_PARAMS default_params = { - .mode = MGSL_MODE_HDLC, - .loopback = 0, - .flags = HDLC_FLAG_UNDERRUN_ABORT15, - .encoding = HDLC_ENCODING_NRZI_SPACE, - .clock_speed = 0, - .addr_filter = 0xff, - .crc_type = HDLC_CRC_16_CCITT, - .preamble_length = HDLC_PREAMBLE_LENGTH_8BITS, - .preamble = HDLC_PREAMBLE_PATTERN_NONE, - .data_rate = 9600, - .data_bits = 8, - .stop_bits = 1, - .parity = ASYNC_PARITY_NONE -}; - - -#define BH_RECEIVE 1 -#define BH_TRANSMIT 2 -#define BH_STATUS 4 -#define IO_PIN_SHUTDOWN_LIMIT 100 - -#define DMABUFSIZE 256 -#define DESC_LIST_SIZE 4096 - -#define MASK_PARITY BIT1 -#define MASK_FRAMING BIT0 -#define MASK_BREAK BIT14 -#define MASK_OVERRUN BIT4 - -#define GSR 0x00 /* global status */ -#define JCR 0x04 /* JTAG control */ -#define IODR 0x08 /* GPIO direction */ -#define IOER 0x0c /* GPIO interrupt enable */ -#define IOVR 0x10 /* GPIO value */ -#define IOSR 0x14 /* GPIO interrupt status */ -#define TDR 0x80 /* tx data */ -#define RDR 0x80 /* rx data */ -#define TCR 0x82 /* tx control */ -#define TIR 0x84 /* tx idle */ -#define TPR 0x85 /* tx preamble */ -#define RCR 0x86 /* rx control */ -#define VCR 0x88 /* V.24 control */ -#define CCR 0x89 /* clock control */ -#define BDR 0x8a /* baud divisor */ -#define SCR 0x8c /* serial control */ -#define SSR 0x8e /* serial status */ -#define RDCSR 0x90 /* rx DMA control/status */ -#define TDCSR 0x94 /* tx DMA control/status */ -#define RDDAR 0x98 /* rx DMA descriptor address */ -#define TDDAR 0x9c /* tx DMA descriptor address */ -#define XSR 0x40 /* extended sync pattern */ -#define XCR 0x44 /* extended control */ - -#define RXIDLE BIT14 -#define RXBREAK BIT14 -#define IRQ_TXDATA BIT13 -#define IRQ_TXIDLE BIT12 -#define IRQ_TXUNDER BIT11 /* HDLC */ -#define IRQ_RXDATA BIT10 -#define IRQ_RXIDLE BIT9 /* HDLC */ -#define IRQ_RXBREAK BIT9 /* async */ -#define IRQ_RXOVER BIT8 -#define IRQ_DSR BIT7 -#define IRQ_CTS BIT6 -#define IRQ_DCD BIT5 -#define IRQ_RI BIT4 -#define IRQ_ALL 0x3ff0 -#define IRQ_MASTER BIT0 - -#define slgt_irq_on(info, mask) \ - wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) | (mask))) -#define slgt_irq_off(info, mask) \ - wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) & ~(mask))) - -static __u8 rd_reg8(struct slgt_info *info, unsigned int addr); -static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value); -static __u16 rd_reg16(struct slgt_info *info, unsigned int addr); -static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value); -static __u32 rd_reg32(struct slgt_info *info, unsigned int addr); -static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value); - -static void msc_set_vcr(struct slgt_info *info); - -static int startup(struct slgt_info *info); -static int block_til_ready(struct tty_struct *tty, struct file * filp,struct slgt_info *info); -static void shutdown(struct slgt_info *info); -static void program_hw(struct slgt_info *info); -static void change_params(struct slgt_info *info); - -static int register_test(struct slgt_info *info); -static int irq_test(struct slgt_info *info); -static int loopback_test(struct slgt_info *info); -static int adapter_test(struct slgt_info *info); - -static void reset_adapter(struct slgt_info *info); -static void reset_port(struct slgt_info *info); -static void async_mode(struct slgt_info *info); -static void sync_mode(struct slgt_info *info); - -static void rx_stop(struct slgt_info *info); -static void rx_start(struct slgt_info *info); -static void reset_rbufs(struct slgt_info *info); -static void free_rbufs(struct slgt_info *info, unsigned int first, unsigned int last); -static void rdma_reset(struct slgt_info *info); -static bool rx_get_frame(struct slgt_info *info); -static bool rx_get_buf(struct slgt_info *info); - -static void tx_start(struct slgt_info *info); -static void tx_stop(struct slgt_info *info); -static void tx_set_idle(struct slgt_info *info); -static unsigned int free_tbuf_count(struct slgt_info *info); -static unsigned int tbuf_bytes(struct slgt_info *info); -static void reset_tbufs(struct slgt_info *info); -static void tdma_reset(struct slgt_info *info); -static bool tx_load(struct slgt_info *info, const char *buf, unsigned int count); - -static void get_signals(struct slgt_info *info); -static void set_signals(struct slgt_info *info); -static void enable_loopback(struct slgt_info *info); -static void set_rate(struct slgt_info *info, u32 data_rate); - -static int bh_action(struct slgt_info *info); -static void bh_handler(struct work_struct *work); -static void bh_transmit(struct slgt_info *info); -static void isr_serial(struct slgt_info *info); -static void isr_rdma(struct slgt_info *info); -static void isr_txeom(struct slgt_info *info, unsigned short status); -static void isr_tdma(struct slgt_info *info); - -static int alloc_dma_bufs(struct slgt_info *info); -static void free_dma_bufs(struct slgt_info *info); -static int alloc_desc(struct slgt_info *info); -static void free_desc(struct slgt_info *info); -static int alloc_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count); -static void free_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count); - -static int alloc_tmp_rbuf(struct slgt_info *info); -static void free_tmp_rbuf(struct slgt_info *info); - -static void tx_timeout(unsigned long context); -static void rx_timeout(unsigned long context); - -/* - * ioctl handlers - */ -static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount); -static int get_params(struct slgt_info *info, MGSL_PARAMS __user *params); -static int set_params(struct slgt_info *info, MGSL_PARAMS __user *params); -static int get_txidle(struct slgt_info *info, int __user *idle_mode); -static int set_txidle(struct slgt_info *info, int idle_mode); -static int tx_enable(struct slgt_info *info, int enable); -static int tx_abort(struct slgt_info *info); -static int rx_enable(struct slgt_info *info, int enable); -static int modem_input_wait(struct slgt_info *info,int arg); -static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr); -static int tiocmget(struct tty_struct *tty); -static int tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear); -static int set_break(struct tty_struct *tty, int break_state); -static int get_interface(struct slgt_info *info, int __user *if_mode); -static int set_interface(struct slgt_info *info, int if_mode); -static int set_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); -static int get_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); -static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); -static int get_xsync(struct slgt_info *info, int __user *if_mode); -static int set_xsync(struct slgt_info *info, int if_mode); -static int get_xctrl(struct slgt_info *info, int __user *if_mode); -static int set_xctrl(struct slgt_info *info, int if_mode); - -/* - * driver functions - */ -static void add_device(struct slgt_info *info); -static void device_init(int adapter_num, struct pci_dev *pdev); -static int claim_resources(struct slgt_info *info); -static void release_resources(struct slgt_info *info); - -/* - * DEBUG OUTPUT CODE - */ -#ifndef DBGINFO -#define DBGINFO(fmt) -#endif -#ifndef DBGERR -#define DBGERR(fmt) -#endif -#ifndef DBGBH -#define DBGBH(fmt) -#endif -#ifndef DBGISR -#define DBGISR(fmt) -#endif - -#ifdef DBGDATA -static void trace_block(struct slgt_info *info, const char *data, int count, const char *label) -{ - int i; - int linecount; - printk("%s %s data:\n",info->device_name, label); - while(count) { - linecount = (count > 16) ? 16 : count; - for(i=0; i < linecount; i++) - printk("%02X ",(unsigned char)data[i]); - for(;i<17;i++) - printk(" "); - for(i=0;i=040 && data[i]<=0176) - printk("%c",data[i]); - else - printk("."); - } - printk("\n"); - data += linecount; - count -= linecount; - } -} -#else -#define DBGDATA(info, buf, size, label) -#endif - -#ifdef DBGTBUF -static void dump_tbufs(struct slgt_info *info) -{ - int i; - printk("tbuf_current=%d\n", info->tbuf_current); - for (i=0 ; i < info->tbuf_count ; i++) { - printk("%d: count=%04X status=%04X\n", - i, le16_to_cpu(info->tbufs[i].count), le16_to_cpu(info->tbufs[i].status)); - } -} -#else -#define DBGTBUF(info) -#endif - -#ifdef DBGRBUF -static void dump_rbufs(struct slgt_info *info) -{ - int i; - printk("rbuf_current=%d\n", info->rbuf_current); - for (i=0 ; i < info->rbuf_count ; i++) { - printk("%d: count=%04X status=%04X\n", - i, le16_to_cpu(info->rbufs[i].count), le16_to_cpu(info->rbufs[i].status)); - } -} -#else -#define DBGRBUF(info) -#endif - -static inline int sanity_check(struct slgt_info *info, char *devname, const char *name) -{ -#ifdef SANITY_CHECK - if (!info) { - printk("null struct slgt_info for (%s) in %s\n", devname, name); - return 1; - } - if (info->magic != MGSL_MAGIC) { - printk("bad magic number struct slgt_info (%s) in %s\n", devname, name); - return 1; - } -#else - if (!info) - return 1; -#endif - return 0; -} - -/** - * line discipline callback wrappers - * - * The wrappers maintain line discipline references - * while calling into the line discipline. - * - * ldisc_receive_buf - pass receive data to line discipline - */ -static void ldisc_receive_buf(struct tty_struct *tty, - const __u8 *data, char *flags, int count) -{ - struct tty_ldisc *ld; - if (!tty) - return; - ld = tty_ldisc_ref(tty); - if (ld) { - if (ld->ops->receive_buf) - ld->ops->receive_buf(tty, data, flags, count); - tty_ldisc_deref(ld); - } -} - -/* tty callbacks */ - -static int open(struct tty_struct *tty, struct file *filp) -{ - struct slgt_info *info; - int retval, line; - unsigned long flags; - - line = tty->index; - if ((line < 0) || (line >= slgt_device_count)) { - DBGERR(("%s: open with invalid line #%d.\n", driver_name, line)); - return -ENODEV; - } - - info = slgt_device_list; - while(info && info->line != line) - info = info->next_device; - if (sanity_check(info, tty->name, "open")) - return -ENODEV; - if (info->init_error) { - DBGERR(("%s init error=%d\n", info->device_name, info->init_error)); - return -ENODEV; - } - - tty->driver_data = info; - info->port.tty = tty; - - DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count)); - - /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ - if (info->port.flags & ASYNC_CLOSING) - interruptible_sleep_on(&info->port.close_wait); - retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); - goto cleanup; - } - - mutex_lock(&info->port.mutex); - info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0; - - spin_lock_irqsave(&info->netlock, flags); - if (info->netcount) { - retval = -EBUSY; - spin_unlock_irqrestore(&info->netlock, flags); - mutex_unlock(&info->port.mutex); - goto cleanup; - } - info->port.count++; - spin_unlock_irqrestore(&info->netlock, flags); - - if (info->port.count == 1) { - /* 1st open on this device, init hardware */ - retval = startup(info); - if (retval < 0) { - mutex_unlock(&info->port.mutex); - goto cleanup; - } - } - mutex_unlock(&info->port.mutex); - retval = block_til_ready(tty, filp, info); - if (retval) { - DBGINFO(("%s block_til_ready rc=%d\n", info->device_name, retval)); - goto cleanup; - } - - retval = 0; - -cleanup: - if (retval) { - if (tty->count == 1) - info->port.tty = NULL; /* tty layer will release tty struct */ - if(info->port.count) - info->port.count--; - } - - DBGINFO(("%s open rc=%d\n", info->device_name, retval)); - return retval; -} - -static void close(struct tty_struct *tty, struct file *filp) -{ - struct slgt_info *info = tty->driver_data; - - if (sanity_check(info, tty->name, "close")) - return; - DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count)); - - if (tty_port_close_start(&info->port, tty, filp) == 0) - goto cleanup; - - mutex_lock(&info->port.mutex); - if (info->port.flags & ASYNC_INITIALIZED) - wait_until_sent(tty, info->timeout); - flush_buffer(tty); - tty_ldisc_flush(tty); - - shutdown(info); - mutex_unlock(&info->port.mutex); - - tty_port_close_end(&info->port, tty); - info->port.tty = NULL; -cleanup: - DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count)); -} - -static void hangup(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "hangup")) - return; - DBGINFO(("%s hangup\n", info->device_name)); - - flush_buffer(tty); - - mutex_lock(&info->port.mutex); - shutdown(info); - - spin_lock_irqsave(&info->port.lock, flags); - info->port.count = 0; - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - info->port.tty = NULL; - spin_unlock_irqrestore(&info->port.lock, flags); - mutex_unlock(&info->port.mutex); - - wake_up_interruptible(&info->port.open_wait); -} - -static void set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - DBGINFO(("%s set_termios\n", tty->driver->name)); - - change_params(info); - - /* Handle transition to B0 status */ - if (old_termios->c_cflag & CBAUD && - !(tty->termios->c_cflag & CBAUD)) { - info->signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } - - /* Handle transition away from B0 status */ - if (!(old_termios->c_cflag & CBAUD) && - tty->termios->c_cflag & CBAUD) { - info->signals |= SerialSignal_DTR; - if (!(tty->termios->c_cflag & CRTSCTS) || - !test_bit(TTY_THROTTLED, &tty->flags)) { - info->signals |= SerialSignal_RTS; - } - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } - - /* Handle turning off CRTSCTS */ - if (old_termios->c_cflag & CRTSCTS && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - tx_release(tty); - } -} - -static void update_tx_timer(struct slgt_info *info) -{ - /* - * use worst case speed of 1200bps to calculate transmit timeout - * based on data in buffers (tbuf_bytes) and FIFO (128 bytes) - */ - if (info->params.mode == MGSL_MODE_HDLC) { - int timeout = (tbuf_bytes(info) * 7) + 1000; - mod_timer(&info->tx_timer, jiffies + msecs_to_jiffies(timeout)); - } -} - -static int write(struct tty_struct *tty, - const unsigned char *buf, int count) -{ - int ret = 0; - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "write")) - return -EIO; - - DBGINFO(("%s write count=%d\n", info->device_name, count)); - - if (!info->tx_buf || (count > info->max_frame_size)) - return -EIO; - - if (!count || tty->stopped || tty->hw_stopped) - return 0; - - spin_lock_irqsave(&info->lock, flags); - - if (info->tx_count) { - /* send accumulated data from send_char() */ - if (!tx_load(info, info->tx_buf, info->tx_count)) - goto cleanup; - info->tx_count = 0; - } - - if (tx_load(info, buf, count)) - ret = count; - -cleanup: - spin_unlock_irqrestore(&info->lock, flags); - DBGINFO(("%s write rc=%d\n", info->device_name, ret)); - return ret; -} - -static int put_char(struct tty_struct *tty, unsigned char ch) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - int ret = 0; - - if (sanity_check(info, tty->name, "put_char")) - return 0; - DBGINFO(("%s put_char(%d)\n", info->device_name, ch)); - if (!info->tx_buf) - return 0; - spin_lock_irqsave(&info->lock,flags); - if (info->tx_count < info->max_frame_size) { - info->tx_buf[info->tx_count++] = ch; - ret = 1; - } - spin_unlock_irqrestore(&info->lock,flags); - return ret; -} - -static void send_xchar(struct tty_struct *tty, char ch) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "send_xchar")) - return; - DBGINFO(("%s send_xchar(%d)\n", info->device_name, ch)); - info->x_char = ch; - if (ch) { - spin_lock_irqsave(&info->lock,flags); - if (!info->tx_enabled) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - } -} - -static void wait_until_sent(struct tty_struct *tty, int timeout) -{ - struct slgt_info *info = tty->driver_data; - unsigned long orig_jiffies, char_time; - - if (!info ) - return; - if (sanity_check(info, tty->name, "wait_until_sent")) - return; - DBGINFO(("%s wait_until_sent entry\n", info->device_name)); - if (!(info->port.flags & ASYNC_INITIALIZED)) - goto exit; - - orig_jiffies = jiffies; - - /* Set check interval to 1/5 of estimated time to - * send a character, and make it at least 1. The check - * interval should also be less than the timeout. - * Note: use tight timings here to satisfy the NIST-PCTS. - */ - - if (info->params.data_rate) { - char_time = info->timeout/(32 * 5); - if (!char_time) - char_time++; - } else - char_time = 1; - - if (timeout) - char_time = min_t(unsigned long, char_time, timeout); - - while (info->tx_active) { - msleep_interruptible(jiffies_to_msecs(char_time)); - if (signal_pending(current)) - break; - if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; - } -exit: - DBGINFO(("%s wait_until_sent exit\n", info->device_name)); -} - -static int write_room(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - int ret; - - if (sanity_check(info, tty->name, "write_room")) - return 0; - ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE; - DBGINFO(("%s write_room=%d\n", info->device_name, ret)); - return ret; -} - -static void flush_chars(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "flush_chars")) - return; - DBGINFO(("%s flush_chars entry tx_count=%d\n", info->device_name, info->tx_count)); - - if (info->tx_count <= 0 || tty->stopped || - tty->hw_stopped || !info->tx_buf) - return; - - DBGINFO(("%s flush_chars start transmit\n", info->device_name)); - - spin_lock_irqsave(&info->lock,flags); - if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count)) - info->tx_count = 0; - spin_unlock_irqrestore(&info->lock,flags); -} - -static void flush_buffer(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "flush_buffer")) - return; - DBGINFO(("%s flush_buffer\n", info->device_name)); - - spin_lock_irqsave(&info->lock, flags); - info->tx_count = 0; - spin_unlock_irqrestore(&info->lock, flags); - - tty_wakeup(tty); -} - -/* - * throttle (stop) transmitter - */ -static void tx_hold(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "tx_hold")) - return; - DBGINFO(("%s tx_hold\n", info->device_name)); - spin_lock_irqsave(&info->lock,flags); - if (info->tx_enabled && info->params.mode == MGSL_MODE_ASYNC) - tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); -} - -/* - * release (start) transmitter - */ -static void tx_release(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "tx_release")) - return; - DBGINFO(("%s tx_release\n", info->device_name)); - spin_lock_irqsave(&info->lock, flags); - if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count)) - info->tx_count = 0; - spin_unlock_irqrestore(&info->lock, flags); -} - -/* - * Service an IOCTL request - * - * Arguments - * - * tty pointer to tty instance data - * cmd IOCTL command code - * arg command argument/context - * - * Return 0 if success, otherwise error code - */ -static int ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct slgt_info *info = tty->driver_data; - void __user *argp = (void __user *)arg; - int ret; - - if (sanity_check(info, tty->name, "ioctl")) - return -ENODEV; - DBGINFO(("%s ioctl() cmd=%08X\n", info->device_name, cmd)); - - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT)) { - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - } - - switch (cmd) { - case MGSL_IOCWAITEVENT: - return wait_mgsl_event(info, argp); - case TIOCMIWAIT: - return modem_input_wait(info,(int)arg); - case MGSL_IOCSGPIO: - return set_gpio(info, argp); - case MGSL_IOCGGPIO: - return get_gpio(info, argp); - case MGSL_IOCWAITGPIO: - return wait_gpio(info, argp); - case MGSL_IOCGXSYNC: - return get_xsync(info, argp); - case MGSL_IOCSXSYNC: - return set_xsync(info, (int)arg); - case MGSL_IOCGXCTRL: - return get_xctrl(info, argp); - case MGSL_IOCSXCTRL: - return set_xctrl(info, (int)arg); - } - mutex_lock(&info->port.mutex); - switch (cmd) { - case MGSL_IOCGPARAMS: - ret = get_params(info, argp); - break; - case MGSL_IOCSPARAMS: - ret = set_params(info, argp); - break; - case MGSL_IOCGTXIDLE: - ret = get_txidle(info, argp); - break; - case MGSL_IOCSTXIDLE: - ret = set_txidle(info, (int)arg); - break; - case MGSL_IOCTXENABLE: - ret = tx_enable(info, (int)arg); - break; - case MGSL_IOCRXENABLE: - ret = rx_enable(info, (int)arg); - break; - case MGSL_IOCTXABORT: - ret = tx_abort(info); - break; - case MGSL_IOCGSTATS: - ret = get_stats(info, argp); - break; - case MGSL_IOCGIF: - ret = get_interface(info, argp); - break; - case MGSL_IOCSIF: - ret = set_interface(info,(int)arg); - break; - default: - ret = -ENOIOCTLCMD; - } - mutex_unlock(&info->port.mutex); - return ret; -} - -static int get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) - -{ - struct slgt_info *info = tty->driver_data; - struct mgsl_icount cnow; /* kernel counter temps */ - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->lock,flags); - - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->frame = cnow.frame; - icount->overrun = cnow.overrun; - icount->parity = cnow.parity; - icount->brk = cnow.brk; - icount->buf_overrun = cnow.buf_overrun; - - return 0; -} - -/* - * support for 32 bit ioctl calls on 64 bit systems - */ -#ifdef CONFIG_COMPAT -static long get_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *user_params) -{ - struct MGSL_PARAMS32 tmp_params; - - DBGINFO(("%s get_params32\n", info->device_name)); - memset(&tmp_params, 0, sizeof(tmp_params)); - tmp_params.mode = (compat_ulong_t)info->params.mode; - tmp_params.loopback = info->params.loopback; - tmp_params.flags = info->params.flags; - tmp_params.encoding = info->params.encoding; - tmp_params.clock_speed = (compat_ulong_t)info->params.clock_speed; - tmp_params.addr_filter = info->params.addr_filter; - tmp_params.crc_type = info->params.crc_type; - tmp_params.preamble_length = info->params.preamble_length; - tmp_params.preamble = info->params.preamble; - tmp_params.data_rate = (compat_ulong_t)info->params.data_rate; - tmp_params.data_bits = info->params.data_bits; - tmp_params.stop_bits = info->params.stop_bits; - tmp_params.parity = info->params.parity; - if (copy_to_user(user_params, &tmp_params, sizeof(struct MGSL_PARAMS32))) - return -EFAULT; - return 0; -} - -static long set_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *new_params) -{ - struct MGSL_PARAMS32 tmp_params; - - DBGINFO(("%s set_params32\n", info->device_name)); - if (copy_from_user(&tmp_params, new_params, sizeof(struct MGSL_PARAMS32))) - return -EFAULT; - - spin_lock(&info->lock); - if (tmp_params.mode == MGSL_MODE_BASE_CLOCK) { - info->base_clock = tmp_params.clock_speed; - } else { - info->params.mode = tmp_params.mode; - info->params.loopback = tmp_params.loopback; - info->params.flags = tmp_params.flags; - info->params.encoding = tmp_params.encoding; - info->params.clock_speed = tmp_params.clock_speed; - info->params.addr_filter = tmp_params.addr_filter; - info->params.crc_type = tmp_params.crc_type; - info->params.preamble_length = tmp_params.preamble_length; - info->params.preamble = tmp_params.preamble; - info->params.data_rate = tmp_params.data_rate; - info->params.data_bits = tmp_params.data_bits; - info->params.stop_bits = tmp_params.stop_bits; - info->params.parity = tmp_params.parity; - } - spin_unlock(&info->lock); - - program_hw(info); - - return 0; -} - -static long slgt_compat_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct slgt_info *info = tty->driver_data; - int rc = -ENOIOCTLCMD; - - if (sanity_check(info, tty->name, "compat_ioctl")) - return -ENODEV; - DBGINFO(("%s compat_ioctl() cmd=%08X\n", info->device_name, cmd)); - - switch (cmd) { - - case MGSL_IOCSPARAMS32: - rc = set_params32(info, compat_ptr(arg)); - break; - - case MGSL_IOCGPARAMS32: - rc = get_params32(info, compat_ptr(arg)); - break; - - case MGSL_IOCGPARAMS: - case MGSL_IOCSPARAMS: - case MGSL_IOCGTXIDLE: - case MGSL_IOCGSTATS: - case MGSL_IOCWAITEVENT: - case MGSL_IOCGIF: - case MGSL_IOCSGPIO: - case MGSL_IOCGGPIO: - case MGSL_IOCWAITGPIO: - case MGSL_IOCGXSYNC: - case MGSL_IOCGXCTRL: - case MGSL_IOCSTXIDLE: - case MGSL_IOCTXENABLE: - case MGSL_IOCRXENABLE: - case MGSL_IOCTXABORT: - case TIOCMIWAIT: - case MGSL_IOCSIF: - case MGSL_IOCSXSYNC: - case MGSL_IOCSXCTRL: - rc = ioctl(tty, cmd, arg); - break; - } - - DBGINFO(("%s compat_ioctl() cmd=%08X rc=%d\n", info->device_name, cmd, rc)); - return rc; -} -#else -#define slgt_compat_ioctl NULL -#endif /* ifdef CONFIG_COMPAT */ - -/* - * proc fs support - */ -static inline void line_info(struct seq_file *m, struct slgt_info *info) -{ - char stat_buf[30]; - unsigned long flags; - - seq_printf(m, "%s: IO=%08X IRQ=%d MaxFrameSize=%u\n", - info->device_name, info->phys_reg_addr, - info->irq_level, info->max_frame_size); - - /* output current serial signal states */ - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - - stat_buf[0] = 0; - stat_buf[1] = 0; - if (info->signals & SerialSignal_RTS) - strcat(stat_buf, "|RTS"); - if (info->signals & SerialSignal_CTS) - strcat(stat_buf, "|CTS"); - if (info->signals & SerialSignal_DTR) - strcat(stat_buf, "|DTR"); - if (info->signals & SerialSignal_DSR) - strcat(stat_buf, "|DSR"); - if (info->signals & SerialSignal_DCD) - strcat(stat_buf, "|CD"); - if (info->signals & SerialSignal_RI) - strcat(stat_buf, "|RI"); - - if (info->params.mode != MGSL_MODE_ASYNC) { - seq_printf(m, "\tHDLC txok:%d rxok:%d", - info->icount.txok, info->icount.rxok); - if (info->icount.txunder) - seq_printf(m, " txunder:%d", info->icount.txunder); - if (info->icount.txabort) - seq_printf(m, " txabort:%d", info->icount.txabort); - if (info->icount.rxshort) - seq_printf(m, " rxshort:%d", info->icount.rxshort); - if (info->icount.rxlong) - seq_printf(m, " rxlong:%d", info->icount.rxlong); - if (info->icount.rxover) - seq_printf(m, " rxover:%d", info->icount.rxover); - if (info->icount.rxcrc) - seq_printf(m, " rxcrc:%d", info->icount.rxcrc); - } else { - seq_printf(m, "\tASYNC tx:%d rx:%d", - info->icount.tx, info->icount.rx); - if (info->icount.frame) - seq_printf(m, " fe:%d", info->icount.frame); - if (info->icount.parity) - seq_printf(m, " pe:%d", info->icount.parity); - if (info->icount.brk) - seq_printf(m, " brk:%d", info->icount.brk); - if (info->icount.overrun) - seq_printf(m, " oe:%d", info->icount.overrun); - } - - /* Append serial signal status to end */ - seq_printf(m, " %s\n", stat_buf+1); - - seq_printf(m, "\ttxactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", - info->tx_active,info->bh_requested,info->bh_running, - info->pending_bh); -} - -/* Called to print information about devices - */ -static int synclink_gt_proc_show(struct seq_file *m, void *v) -{ - struct slgt_info *info; - - seq_puts(m, "synclink_gt driver\n"); - - info = slgt_device_list; - while( info ) { - line_info(m, info); - info = info->next_device; - } - return 0; -} - -static int synclink_gt_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, synclink_gt_proc_show, NULL); -} - -static const struct file_operations synclink_gt_proc_fops = { - .owner = THIS_MODULE, - .open = synclink_gt_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* - * return count of bytes in transmit buffer - */ -static int chars_in_buffer(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - int count; - if (sanity_check(info, tty->name, "chars_in_buffer")) - return 0; - count = tbuf_bytes(info); - DBGINFO(("%s chars_in_buffer()=%d\n", info->device_name, count)); - return count; -} - -/* - * signal remote device to throttle send data (our receive data) - */ -static void throttle(struct tty_struct * tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "throttle")) - return; - DBGINFO(("%s throttle\n", info->device_name)); - if (I_IXOFF(tty)) - send_xchar(tty, STOP_CHAR(tty)); - if (tty->termios->c_cflag & CRTSCTS) { - spin_lock_irqsave(&info->lock,flags); - info->signals &= ~SerialSignal_RTS; - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } -} - -/* - * signal remote device to stop throttling send data (our receive data) - */ -static void unthrottle(struct tty_struct * tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "unthrottle")) - return; - DBGINFO(("%s unthrottle\n", info->device_name)); - if (I_IXOFF(tty)) { - if (info->x_char) - info->x_char = 0; - else - send_xchar(tty, START_CHAR(tty)); - } - if (tty->termios->c_cflag & CRTSCTS) { - spin_lock_irqsave(&info->lock,flags); - info->signals |= SerialSignal_RTS; - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } -} - -/* - * set or clear transmit break condition - * break_state -1=set break condition, 0=clear - */ -static int set_break(struct tty_struct *tty, int break_state) -{ - struct slgt_info *info = tty->driver_data; - unsigned short value; - unsigned long flags; - - if (sanity_check(info, tty->name, "set_break")) - return -EINVAL; - DBGINFO(("%s set_break(%d)\n", info->device_name, break_state)); - - spin_lock_irqsave(&info->lock,flags); - value = rd_reg16(info, TCR); - if (break_state == -1) - value |= BIT6; - else - value &= ~BIT6; - wr_reg16(info, TCR, value); - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -#if SYNCLINK_GENERIC_HDLC - -/** - * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) - * set encoding and frame check sequence (FCS) options - * - * dev pointer to network device structure - * encoding serial encoding setting - * parity FCS setting - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, - unsigned short parity) -{ - struct slgt_info *info = dev_to_port(dev); - unsigned char new_encoding; - unsigned short new_crctype; - - /* return error if TTY interface open */ - if (info->port.count) - return -EBUSY; - - DBGINFO(("%s hdlcdev_attach\n", info->device_name)); - - switch (encoding) - { - case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; - case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; - case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; - case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; - case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; - default: return -EINVAL; - } - - switch (parity) - { - case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; - case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; - case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; - default: return -EINVAL; - } - - info->params.encoding = new_encoding; - info->params.crc_type = new_crctype; - - /* if network interface up, reprogram hardware */ - if (info->netcount) - program_hw(info); - - return 0; -} - -/** - * called by generic HDLC layer to send frame - * - * skb socket buffer containing HDLC frame - * dev pointer to network device structure - */ -static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct slgt_info *info = dev_to_port(dev); - unsigned long flags; - - DBGINFO(("%s hdlc_xmit\n", dev->name)); - - if (!skb->len) - return NETDEV_TX_OK; - - /* stop sending until this frame completes */ - netif_stop_queue(dev); - - /* update network statistics */ - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - - /* save start time for transmit timeout detection */ - dev->trans_start = jiffies; - - spin_lock_irqsave(&info->lock, flags); - tx_load(info, skb->data, skb->len); - spin_unlock_irqrestore(&info->lock, flags); - - /* done with socket buffer, so free it */ - dev_kfree_skb(skb); - - return NETDEV_TX_OK; -} - -/** - * called by network layer when interface enabled - * claim resources and initialize hardware - * - * dev pointer to network device structure - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_open(struct net_device *dev) -{ - struct slgt_info *info = dev_to_port(dev); - int rc; - unsigned long flags; - - if (!try_module_get(THIS_MODULE)) - return -EBUSY; - - DBGINFO(("%s hdlcdev_open\n", dev->name)); - - /* generic HDLC layer open processing */ - if ((rc = hdlc_open(dev))) - return rc; - - /* arbitrate between network and tty opens */ - spin_lock_irqsave(&info->netlock, flags); - if (info->port.count != 0 || info->netcount != 0) { - DBGINFO(("%s hdlc_open busy\n", dev->name)); - spin_unlock_irqrestore(&info->netlock, flags); - return -EBUSY; - } - info->netcount=1; - spin_unlock_irqrestore(&info->netlock, flags); - - /* claim resources and init adapter */ - if ((rc = startup(info)) != 0) { - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - return rc; - } - - /* assert DTR and RTS, apply hardware settings */ - info->signals |= SerialSignal_RTS + SerialSignal_DTR; - program_hw(info); - - /* enable network layer transmit */ - dev->trans_start = jiffies; - netif_start_queue(dev); - - /* inform generic HDLC layer of current DCD status */ - spin_lock_irqsave(&info->lock, flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock, flags); - if (info->signals & SerialSignal_DCD) - netif_carrier_on(dev); - else - netif_carrier_off(dev); - return 0; -} - -/** - * called by network layer when interface is disabled - * shutdown hardware and release resources - * - * dev pointer to network device structure - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_close(struct net_device *dev) -{ - struct slgt_info *info = dev_to_port(dev); - unsigned long flags; - - DBGINFO(("%s hdlcdev_close\n", dev->name)); - - netif_stop_queue(dev); - - /* shutdown adapter and release resources */ - shutdown(info); - - hdlc_close(dev); - - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - - module_put(THIS_MODULE); - return 0; -} - -/** - * called by network layer to process IOCTL call to network device - * - * dev pointer to network device structure - * ifr pointer to network interface request structure - * cmd IOCTL command code - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - const size_t size = sizeof(sync_serial_settings); - sync_serial_settings new_line; - sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; - struct slgt_info *info = dev_to_port(dev); - unsigned int flags; - - DBGINFO(("%s hdlcdev_ioctl\n", dev->name)); - - /* return error if TTY interface open */ - if (info->port.count) - return -EBUSY; - - if (cmd != SIOCWANDEV) - return hdlc_ioctl(dev, ifr, cmd); - - memset(&new_line, 0, sizeof(new_line)); - - switch(ifr->ifr_settings.type) { - case IF_GET_IFACE: /* return current sync_serial_settings */ - - ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; - if (ifr->ifr_settings.size < size) { - ifr->ifr_settings.size = size; /* data size wanted */ - return -ENOBUFS; - } - - flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); - - switch (flags){ - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; - case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; - default: new_line.clock_type = CLOCK_DEFAULT; - } - - new_line.clock_rate = info->params.clock_speed; - new_line.loopback = info->params.loopback ? 1:0; - - if (copy_to_user(line, &new_line, size)) - return -EFAULT; - return 0; - - case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ - - if(!capable(CAP_NET_ADMIN)) - return -EPERM; - if (copy_from_user(&new_line, line, size)) - return -EFAULT; - - switch (new_line.clock_type) - { - case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; - case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; - case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; - case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; - case CLOCK_DEFAULT: flags = info->params.flags & - (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; - default: return -EINVAL; - } - - if (new_line.loopback != 0 && new_line.loopback != 1) - return -EINVAL; - - info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); - info->params.flags |= flags; - - info->params.loopback = new_line.loopback; - - if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) - info->params.clock_speed = new_line.clock_rate; - else - info->params.clock_speed = 0; - - /* if network interface up, reprogram hardware */ - if (info->netcount) - program_hw(info); - return 0; - - default: - return hdlc_ioctl(dev, ifr, cmd); - } -} - -/** - * called by network layer when transmit timeout is detected - * - * dev pointer to network device structure - */ -static void hdlcdev_tx_timeout(struct net_device *dev) -{ - struct slgt_info *info = dev_to_port(dev); - unsigned long flags; - - DBGINFO(("%s hdlcdev_tx_timeout\n", dev->name)); - - dev->stats.tx_errors++; - dev->stats.tx_aborted_errors++; - - spin_lock_irqsave(&info->lock,flags); - tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); - - netif_wake_queue(dev); -} - -/** - * called by device driver when transmit completes - * reenable network layer transmit if stopped - * - * info pointer to device instance information - */ -static void hdlcdev_tx_done(struct slgt_info *info) -{ - if (netif_queue_stopped(info->netdev)) - netif_wake_queue(info->netdev); -} - -/** - * called by device driver when frame received - * pass frame to network layer - * - * info pointer to device instance information - * buf pointer to buffer contianing frame data - * size count of data bytes in buf - */ -static void hdlcdev_rx(struct slgt_info *info, char *buf, int size) -{ - struct sk_buff *skb = dev_alloc_skb(size); - struct net_device *dev = info->netdev; - - DBGINFO(("%s hdlcdev_rx\n", dev->name)); - - if (skb == NULL) { - DBGERR(("%s: can't alloc skb, drop packet\n", dev->name)); - dev->stats.rx_dropped++; - return; - } - - memcpy(skb_put(skb, size), buf, size); - - skb->protocol = hdlc_type_trans(skb, dev); - - dev->stats.rx_packets++; - dev->stats.rx_bytes += size; - - netif_rx(skb); -} - -static const struct net_device_ops hdlcdev_ops = { - .ndo_open = hdlcdev_open, - .ndo_stop = hdlcdev_close, - .ndo_change_mtu = hdlc_change_mtu, - .ndo_start_xmit = hdlc_start_xmit, - .ndo_do_ioctl = hdlcdev_ioctl, - .ndo_tx_timeout = hdlcdev_tx_timeout, -}; - -/** - * called by device driver when adding device instance - * do generic HDLC initialization - * - * info pointer to device instance information - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_init(struct slgt_info *info) -{ - int rc; - struct net_device *dev; - hdlc_device *hdlc; - - /* allocate and initialize network and HDLC layer objects */ - - if (!(dev = alloc_hdlcdev(info))) { - printk(KERN_ERR "%s hdlc device alloc failure\n", info->device_name); - return -ENOMEM; - } - - /* for network layer reporting purposes only */ - dev->mem_start = info->phys_reg_addr; - dev->mem_end = info->phys_reg_addr + SLGT_REG_SIZE - 1; - dev->irq = info->irq_level; - - /* network layer callbacks and settings */ - dev->netdev_ops = &hdlcdev_ops; - dev->watchdog_timeo = 10 * HZ; - dev->tx_queue_len = 50; - - /* generic HDLC layer callbacks and settings */ - hdlc = dev_to_hdlc(dev); - hdlc->attach = hdlcdev_attach; - hdlc->xmit = hdlcdev_xmit; - - /* register objects with HDLC layer */ - if ((rc = register_hdlc_device(dev))) { - printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); - free_netdev(dev); - return rc; - } - - info->netdev = dev; - return 0; -} - -/** - * called by device driver when removing device instance - * do generic HDLC cleanup - * - * info pointer to device instance information - */ -static void hdlcdev_exit(struct slgt_info *info) -{ - unregister_hdlc_device(info->netdev); - free_netdev(info->netdev); - info->netdev = NULL; -} - -#endif /* ifdef CONFIG_HDLC */ - -/* - * get async data from rx DMA buffers - */ -static void rx_async(struct slgt_info *info) -{ - struct tty_struct *tty = info->port.tty; - struct mgsl_icount *icount = &info->icount; - unsigned int start, end; - unsigned char *p; - unsigned char status; - struct slgt_desc *bufs = info->rbufs; - int i, count; - int chars = 0; - int stat; - unsigned char ch; - - start = end = info->rbuf_current; - - while(desc_complete(bufs[end])) { - count = desc_count(bufs[end]) - info->rbuf_index; - p = bufs[end].buf + info->rbuf_index; - - DBGISR(("%s rx_async count=%d\n", info->device_name, count)); - DBGDATA(info, p, count, "rx"); - - for(i=0 ; i < count; i+=2, p+=2) { - ch = *p; - icount->rx++; - - stat = 0; - - if ((status = *(p+1) & (BIT1 + BIT0))) { - if (status & BIT1) - icount->parity++; - else if (status & BIT0) - icount->frame++; - /* discard char if tty control flags say so */ - if (status & info->ignore_status_mask) - continue; - if (status & BIT1) - stat = TTY_PARITY; - else if (status & BIT0) - stat = TTY_FRAME; - } - if (tty) { - tty_insert_flip_char(tty, ch, stat); - chars++; - } - } - - if (i < count) { - /* receive buffer not completed */ - info->rbuf_index += i; - mod_timer(&info->rx_timer, jiffies + 1); - break; - } - - info->rbuf_index = 0; - free_rbufs(info, end, end); - - if (++end == info->rbuf_count) - end = 0; - - /* if entire list searched then no frame available */ - if (end == start) - break; - } - - if (tty && chars) - tty_flip_buffer_push(tty); -} - -/* - * return next bottom half action to perform - */ -static int bh_action(struct slgt_info *info) -{ - unsigned long flags; - int rc; - - spin_lock_irqsave(&info->lock,flags); - - if (info->pending_bh & BH_RECEIVE) { - info->pending_bh &= ~BH_RECEIVE; - rc = BH_RECEIVE; - } else if (info->pending_bh & BH_TRANSMIT) { - info->pending_bh &= ~BH_TRANSMIT; - rc = BH_TRANSMIT; - } else if (info->pending_bh & BH_STATUS) { - info->pending_bh &= ~BH_STATUS; - rc = BH_STATUS; - } else { - /* Mark BH routine as complete */ - info->bh_running = false; - info->bh_requested = false; - rc = 0; - } - - spin_unlock_irqrestore(&info->lock,flags); - - return rc; -} - -/* - * perform bottom half processing - */ -static void bh_handler(struct work_struct *work) -{ - struct slgt_info *info = container_of(work, struct slgt_info, task); - int action; - - if (!info) - return; - info->bh_running = true; - - while((action = bh_action(info))) { - switch (action) { - case BH_RECEIVE: - DBGBH(("%s bh receive\n", info->device_name)); - switch(info->params.mode) { - case MGSL_MODE_ASYNC: - rx_async(info); - break; - case MGSL_MODE_HDLC: - while(rx_get_frame(info)); - break; - case MGSL_MODE_RAW: - case MGSL_MODE_MONOSYNC: - case MGSL_MODE_BISYNC: - case MGSL_MODE_XSYNC: - while(rx_get_buf(info)); - break; - } - /* restart receiver if rx DMA buffers exhausted */ - if (info->rx_restart) - rx_start(info); - break; - case BH_TRANSMIT: - bh_transmit(info); - break; - case BH_STATUS: - DBGBH(("%s bh status\n", info->device_name)); - info->ri_chkcount = 0; - info->dsr_chkcount = 0; - info->dcd_chkcount = 0; - info->cts_chkcount = 0; - break; - default: - DBGBH(("%s unknown action\n", info->device_name)); - break; - } - } - DBGBH(("%s bh_handler exit\n", info->device_name)); -} - -static void bh_transmit(struct slgt_info *info) -{ - struct tty_struct *tty = info->port.tty; - - DBGBH(("%s bh_transmit\n", info->device_name)); - if (tty) - tty_wakeup(tty); -} - -static void dsr_change(struct slgt_info *info, unsigned short status) -{ - if (status & BIT3) { - info->signals |= SerialSignal_DSR; - info->input_signal_events.dsr_up++; - } else { - info->signals &= ~SerialSignal_DSR; - info->input_signal_events.dsr_down++; - } - DBGISR(("dsr_change %s signals=%04X\n", info->device_name, info->signals)); - if ((info->dsr_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { - slgt_irq_off(info, IRQ_DSR); - return; - } - info->icount.dsr++; - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - info->pending_bh |= BH_STATUS; -} - -static void cts_change(struct slgt_info *info, unsigned short status) -{ - if (status & BIT2) { - info->signals |= SerialSignal_CTS; - info->input_signal_events.cts_up++; - } else { - info->signals &= ~SerialSignal_CTS; - info->input_signal_events.cts_down++; - } - DBGISR(("cts_change %s signals=%04X\n", info->device_name, info->signals)); - if ((info->cts_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { - slgt_irq_off(info, IRQ_CTS); - return; - } - info->icount.cts++; - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - info->pending_bh |= BH_STATUS; - - if (info->port.flags & ASYNC_CTS_FLOW) { - if (info->port.tty) { - if (info->port.tty->hw_stopped) { - if (info->signals & SerialSignal_CTS) { - info->port.tty->hw_stopped = 0; - info->pending_bh |= BH_TRANSMIT; - return; - } - } else { - if (!(info->signals & SerialSignal_CTS)) - info->port.tty->hw_stopped = 1; - } - } - } -} - -static void dcd_change(struct slgt_info *info, unsigned short status) -{ - if (status & BIT1) { - info->signals |= SerialSignal_DCD; - info->input_signal_events.dcd_up++; - } else { - info->signals &= ~SerialSignal_DCD; - info->input_signal_events.dcd_down++; - } - DBGISR(("dcd_change %s signals=%04X\n", info->device_name, info->signals)); - if ((info->dcd_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { - slgt_irq_off(info, IRQ_DCD); - return; - } - info->icount.dcd++; -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) { - if (info->signals & SerialSignal_DCD) - netif_carrier_on(info->netdev); - else - netif_carrier_off(info->netdev); - } -#endif - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - info->pending_bh |= BH_STATUS; - - if (info->port.flags & ASYNC_CHECK_CD) { - if (info->signals & SerialSignal_DCD) - wake_up_interruptible(&info->port.open_wait); - else { - if (info->port.tty) - tty_hangup(info->port.tty); - } - } -} - -static void ri_change(struct slgt_info *info, unsigned short status) -{ - if (status & BIT0) { - info->signals |= SerialSignal_RI; - info->input_signal_events.ri_up++; - } else { - info->signals &= ~SerialSignal_RI; - info->input_signal_events.ri_down++; - } - DBGISR(("ri_change %s signals=%04X\n", info->device_name, info->signals)); - if ((info->ri_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { - slgt_irq_off(info, IRQ_RI); - return; - } - info->icount.rng++; - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - info->pending_bh |= BH_STATUS; -} - -static void isr_rxdata(struct slgt_info *info) -{ - unsigned int count = info->rbuf_fill_count; - unsigned int i = info->rbuf_fill_index; - unsigned short reg; - - while (rd_reg16(info, SSR) & IRQ_RXDATA) { - reg = rd_reg16(info, RDR); - DBGISR(("isr_rxdata %s RDR=%04X\n", info->device_name, reg)); - if (desc_complete(info->rbufs[i])) { - /* all buffers full */ - rx_stop(info); - info->rx_restart = 1; - continue; - } - info->rbufs[i].buf[count++] = (unsigned char)reg; - /* async mode saves status byte to buffer for each data byte */ - if (info->params.mode == MGSL_MODE_ASYNC) - info->rbufs[i].buf[count++] = (unsigned char)(reg >> 8); - if (count == info->rbuf_fill_level || (reg & BIT10)) { - /* buffer full or end of frame */ - set_desc_count(info->rbufs[i], count); - set_desc_status(info->rbufs[i], BIT15 | (reg >> 8)); - info->rbuf_fill_count = count = 0; - if (++i == info->rbuf_count) - i = 0; - info->pending_bh |= BH_RECEIVE; - } - } - - info->rbuf_fill_index = i; - info->rbuf_fill_count = count; -} - -static void isr_serial(struct slgt_info *info) -{ - unsigned short status = rd_reg16(info, SSR); - - DBGISR(("%s isr_serial status=%04X\n", info->device_name, status)); - - wr_reg16(info, SSR, status); /* clear pending */ - - info->irq_occurred = true; - - if (info->params.mode == MGSL_MODE_ASYNC) { - if (status & IRQ_TXIDLE) { - if (info->tx_active) - isr_txeom(info, status); - } - if (info->rx_pio && (status & IRQ_RXDATA)) - isr_rxdata(info); - if ((status & IRQ_RXBREAK) && (status & RXBREAK)) { - info->icount.brk++; - /* process break detection if tty control allows */ - if (info->port.tty) { - if (!(status & info->ignore_status_mask)) { - if (info->read_status_mask & MASK_BREAK) { - tty_insert_flip_char(info->port.tty, 0, TTY_BREAK); - if (info->port.flags & ASYNC_SAK) - do_SAK(info->port.tty); - } - } - } - } - } else { - if (status & (IRQ_TXIDLE + IRQ_TXUNDER)) - isr_txeom(info, status); - if (info->rx_pio && (status & IRQ_RXDATA)) - isr_rxdata(info); - if (status & IRQ_RXIDLE) { - if (status & RXIDLE) - info->icount.rxidle++; - else - info->icount.exithunt++; - wake_up_interruptible(&info->event_wait_q); - } - - if (status & IRQ_RXOVER) - rx_start(info); - } - - if (status & IRQ_DSR) - dsr_change(info, status); - if (status & IRQ_CTS) - cts_change(info, status); - if (status & IRQ_DCD) - dcd_change(info, status); - if (status & IRQ_RI) - ri_change(info, status); -} - -static void isr_rdma(struct slgt_info *info) -{ - unsigned int status = rd_reg32(info, RDCSR); - - DBGISR(("%s isr_rdma status=%08x\n", info->device_name, status)); - - /* RDCSR (rx DMA control/status) - * - * 31..07 reserved - * 06 save status byte to DMA buffer - * 05 error - * 04 eol (end of list) - * 03 eob (end of buffer) - * 02 IRQ enable - * 01 reset - * 00 enable - */ - wr_reg32(info, RDCSR, status); /* clear pending */ - - if (status & (BIT5 + BIT4)) { - DBGISR(("%s isr_rdma rx_restart=1\n", info->device_name)); - info->rx_restart = true; - } - info->pending_bh |= BH_RECEIVE; -} - -static void isr_tdma(struct slgt_info *info) -{ - unsigned int status = rd_reg32(info, TDCSR); - - DBGISR(("%s isr_tdma status=%08x\n", info->device_name, status)); - - /* TDCSR (tx DMA control/status) - * - * 31..06 reserved - * 05 error - * 04 eol (end of list) - * 03 eob (end of buffer) - * 02 IRQ enable - * 01 reset - * 00 enable - */ - wr_reg32(info, TDCSR, status); /* clear pending */ - - if (status & (BIT5 + BIT4 + BIT3)) { - // another transmit buffer has completed - // run bottom half to get more send data from user - info->pending_bh |= BH_TRANSMIT; - } -} - -/* - * return true if there are unsent tx DMA buffers, otherwise false - * - * if there are unsent buffers then info->tbuf_start - * is set to index of first unsent buffer - */ -static bool unsent_tbufs(struct slgt_info *info) -{ - unsigned int i = info->tbuf_current; - bool rc = false; - - /* - * search backwards from last loaded buffer (precedes tbuf_current) - * for first unsent buffer (desc_count > 0) - */ - - do { - if (i) - i--; - else - i = info->tbuf_count - 1; - if (!desc_count(info->tbufs[i])) - break; - info->tbuf_start = i; - rc = true; - } while (i != info->tbuf_current); - - return rc; -} - -static void isr_txeom(struct slgt_info *info, unsigned short status) -{ - DBGISR(("%s txeom status=%04x\n", info->device_name, status)); - - slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER); - tdma_reset(info); - if (status & IRQ_TXUNDER) { - unsigned short val = rd_reg16(info, TCR); - wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */ - wr_reg16(info, TCR, val); /* clear reset bit */ - } - - if (info->tx_active) { - if (info->params.mode != MGSL_MODE_ASYNC) { - if (status & IRQ_TXUNDER) - info->icount.txunder++; - else if (status & IRQ_TXIDLE) - info->icount.txok++; - } - - if (unsent_tbufs(info)) { - tx_start(info); - update_tx_timer(info); - return; - } - info->tx_active = false; - - del_timer(&info->tx_timer); - - if (info->params.mode != MGSL_MODE_ASYNC && info->drop_rts_on_tx_done) { - info->signals &= ~SerialSignal_RTS; - info->drop_rts_on_tx_done = false; - set_signals(info); - } - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_tx_done(info); - else -#endif - { - if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) { - tx_stop(info); - return; - } - info->pending_bh |= BH_TRANSMIT; - } - } -} - -static void isr_gpio(struct slgt_info *info, unsigned int changed, unsigned int state) -{ - struct cond_wait *w, *prev; - - /* wake processes waiting for specific transitions */ - for (w = info->gpio_wait_q, prev = NULL ; w != NULL ; w = w->next) { - if (w->data & changed) { - w->data = state; - wake_up_interruptible(&w->q); - if (prev != NULL) - prev->next = w->next; - else - info->gpio_wait_q = w->next; - } else - prev = w; - } -} - -/* interrupt service routine - * - * irq interrupt number - * dev_id device ID supplied during interrupt registration - */ -static irqreturn_t slgt_interrupt(int dummy, void *dev_id) -{ - struct slgt_info *info = dev_id; - unsigned int gsr; - unsigned int i; - - DBGISR(("slgt_interrupt irq=%d entry\n", info->irq_level)); - - while((gsr = rd_reg32(info, GSR) & 0xffffff00)) { - DBGISR(("%s gsr=%08x\n", info->device_name, gsr)); - info->irq_occurred = true; - for(i=0; i < info->port_count ; i++) { - if (info->port_array[i] == NULL) - continue; - spin_lock(&info->port_array[i]->lock); - if (gsr & (BIT8 << i)) - isr_serial(info->port_array[i]); - if (gsr & (BIT16 << (i*2))) - isr_rdma(info->port_array[i]); - if (gsr & (BIT17 << (i*2))) - isr_tdma(info->port_array[i]); - spin_unlock(&info->port_array[i]->lock); - } - } - - if (info->gpio_present) { - unsigned int state; - unsigned int changed; - spin_lock(&info->lock); - while ((changed = rd_reg32(info, IOSR)) != 0) { - DBGISR(("%s iosr=%08x\n", info->device_name, changed)); - /* read latched state of GPIO signals */ - state = rd_reg32(info, IOVR); - /* clear pending GPIO interrupt bits */ - wr_reg32(info, IOSR, changed); - for (i=0 ; i < info->port_count ; i++) { - if (info->port_array[i] != NULL) - isr_gpio(info->port_array[i], changed, state); - } - } - spin_unlock(&info->lock); - } - - for(i=0; i < info->port_count ; i++) { - struct slgt_info *port = info->port_array[i]; - if (port == NULL) - continue; - spin_lock(&port->lock); - if ((port->port.count || port->netcount) && - port->pending_bh && !port->bh_running && - !port->bh_requested) { - DBGISR(("%s bh queued\n", port->device_name)); - schedule_work(&port->task); - port->bh_requested = true; - } - spin_unlock(&port->lock); - } - - DBGISR(("slgt_interrupt irq=%d exit\n", info->irq_level)); - return IRQ_HANDLED; -} - -static int startup(struct slgt_info *info) -{ - DBGINFO(("%s startup\n", info->device_name)); - - if (info->port.flags & ASYNC_INITIALIZED) - return 0; - - if (!info->tx_buf) { - info->tx_buf = kmalloc(info->max_frame_size, GFP_KERNEL); - if (!info->tx_buf) { - DBGERR(("%s can't allocate tx buffer\n", info->device_name)); - return -ENOMEM; - } - } - - info->pending_bh = 0; - - memset(&info->icount, 0, sizeof(info->icount)); - - /* program hardware for current parameters */ - change_params(info); - - if (info->port.tty) - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); - - info->port.flags |= ASYNC_INITIALIZED; - - return 0; -} - -/* - * called by close() and hangup() to shutdown hardware - */ -static void shutdown(struct slgt_info *info) -{ - unsigned long flags; - - if (!(info->port.flags & ASYNC_INITIALIZED)) - return; - - DBGINFO(("%s shutdown\n", info->device_name)); - - /* clear status wait queue because status changes */ - /* can't happen after shutting down the hardware */ - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - - del_timer_sync(&info->tx_timer); - del_timer_sync(&info->rx_timer); - - kfree(info->tx_buf); - info->tx_buf = NULL; - - spin_lock_irqsave(&info->lock,flags); - - tx_stop(info); - rx_stop(info); - - slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); - - if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) { - info->signals &= ~(SerialSignal_DTR + SerialSignal_RTS); - set_signals(info); - } - - flush_cond_wait(&info->gpio_wait_q); - - spin_unlock_irqrestore(&info->lock,flags); - - if (info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); - - info->port.flags &= ~ASYNC_INITIALIZED; -} - -static void program_hw(struct slgt_info *info) -{ - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - - rx_stop(info); - tx_stop(info); - - if (info->params.mode != MGSL_MODE_ASYNC || - info->netcount) - sync_mode(info); - else - async_mode(info); - - set_signals(info); - - info->dcd_chkcount = 0; - info->cts_chkcount = 0; - info->ri_chkcount = 0; - info->dsr_chkcount = 0; - - slgt_irq_on(info, IRQ_DCD | IRQ_CTS | IRQ_DSR | IRQ_RI); - get_signals(info); - - if (info->netcount || - (info->port.tty && info->port.tty->termios->c_cflag & CREAD)) - rx_start(info); - - spin_unlock_irqrestore(&info->lock,flags); -} - -/* - * reconfigure adapter based on new parameters - */ -static void change_params(struct slgt_info *info) -{ - unsigned cflag; - int bits_per_char; - - if (!info->port.tty || !info->port.tty->termios) - return; - DBGINFO(("%s change_params\n", info->device_name)); - - cflag = info->port.tty->termios->c_cflag; - - /* if B0 rate (hangup) specified then negate DTR and RTS */ - /* otherwise assert DTR and RTS */ - if (cflag & CBAUD) - info->signals |= SerialSignal_RTS + SerialSignal_DTR; - else - info->signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - - /* byte size and parity */ - - switch (cflag & CSIZE) { - case CS5: info->params.data_bits = 5; break; - case CS6: info->params.data_bits = 6; break; - case CS7: info->params.data_bits = 7; break; - case CS8: info->params.data_bits = 8; break; - default: info->params.data_bits = 7; break; - } - - info->params.stop_bits = (cflag & CSTOPB) ? 2 : 1; - - if (cflag & PARENB) - info->params.parity = (cflag & PARODD) ? ASYNC_PARITY_ODD : ASYNC_PARITY_EVEN; - else - info->params.parity = ASYNC_PARITY_NONE; - - /* calculate number of jiffies to transmit a full - * FIFO (32 bytes) at specified data rate - */ - bits_per_char = info->params.data_bits + - info->params.stop_bits + 1; - - info->params.data_rate = tty_get_baud_rate(info->port.tty); - - if (info->params.data_rate) { - info->timeout = (32*HZ*bits_per_char) / - info->params.data_rate; - } - info->timeout += HZ/50; /* Add .02 seconds of slop */ - - if (cflag & CRTSCTS) - info->port.flags |= ASYNC_CTS_FLOW; - else - info->port.flags &= ~ASYNC_CTS_FLOW; - - if (cflag & CLOCAL) - info->port.flags &= ~ASYNC_CHECK_CD; - else - info->port.flags |= ASYNC_CHECK_CD; - - /* process tty input control flags */ - - info->read_status_mask = IRQ_RXOVER; - if (I_INPCK(info->port.tty)) - info->read_status_mask |= MASK_PARITY | MASK_FRAMING; - if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) - info->read_status_mask |= MASK_BREAK; - if (I_IGNPAR(info->port.tty)) - info->ignore_status_mask |= MASK_PARITY | MASK_FRAMING; - if (I_IGNBRK(info->port.tty)) { - info->ignore_status_mask |= MASK_BREAK; - /* If ignoring parity and break indicators, ignore - * overruns too. (For real raw support). - */ - if (I_IGNPAR(info->port.tty)) - info->ignore_status_mask |= MASK_OVERRUN; - } - - program_hw(info); -} - -static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount) -{ - DBGINFO(("%s get_stats\n", info->device_name)); - if (!user_icount) { - memset(&info->icount, 0, sizeof(info->icount)); - } else { - if (copy_to_user(user_icount, &info->icount, sizeof(struct mgsl_icount))) - return -EFAULT; - } - return 0; -} - -static int get_params(struct slgt_info *info, MGSL_PARAMS __user *user_params) -{ - DBGINFO(("%s get_params\n", info->device_name)); - if (copy_to_user(user_params, &info->params, sizeof(MGSL_PARAMS))) - return -EFAULT; - return 0; -} - -static int set_params(struct slgt_info *info, MGSL_PARAMS __user *new_params) -{ - unsigned long flags; - MGSL_PARAMS tmp_params; - - DBGINFO(("%s set_params\n", info->device_name)); - if (copy_from_user(&tmp_params, new_params, sizeof(MGSL_PARAMS))) - return -EFAULT; - - spin_lock_irqsave(&info->lock, flags); - if (tmp_params.mode == MGSL_MODE_BASE_CLOCK) - info->base_clock = tmp_params.clock_speed; - else - memcpy(&info->params, &tmp_params, sizeof(MGSL_PARAMS)); - spin_unlock_irqrestore(&info->lock, flags); - - program_hw(info); - - return 0; -} - -static int get_txidle(struct slgt_info *info, int __user *idle_mode) -{ - DBGINFO(("%s get_txidle=%d\n", info->device_name, info->idle_mode)); - if (put_user(info->idle_mode, idle_mode)) - return -EFAULT; - return 0; -} - -static int set_txidle(struct slgt_info *info, int idle_mode) -{ - unsigned long flags; - DBGINFO(("%s set_txidle(%d)\n", info->device_name, idle_mode)); - spin_lock_irqsave(&info->lock,flags); - info->idle_mode = idle_mode; - if (info->params.mode != MGSL_MODE_ASYNC) - tx_set_idle(info); - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -static int tx_enable(struct slgt_info *info, int enable) -{ - unsigned long flags; - DBGINFO(("%s tx_enable(%d)\n", info->device_name, enable)); - spin_lock_irqsave(&info->lock,flags); - if (enable) { - if (!info->tx_enabled) - tx_start(info); - } else { - if (info->tx_enabled) - tx_stop(info); - } - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -/* - * abort transmit HDLC frame - */ -static int tx_abort(struct slgt_info *info) -{ - unsigned long flags; - DBGINFO(("%s tx_abort\n", info->device_name)); - spin_lock_irqsave(&info->lock,flags); - tdma_reset(info); - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -static int rx_enable(struct slgt_info *info, int enable) -{ - unsigned long flags; - unsigned int rbuf_fill_level; - DBGINFO(("%s rx_enable(%08x)\n", info->device_name, enable)); - spin_lock_irqsave(&info->lock,flags); - /* - * enable[31..16] = receive DMA buffer fill level - * 0 = noop (leave fill level unchanged) - * fill level must be multiple of 4 and <= buffer size - */ - rbuf_fill_level = ((unsigned int)enable) >> 16; - if (rbuf_fill_level) { - if ((rbuf_fill_level > DMABUFSIZE) || (rbuf_fill_level % 4)) { - spin_unlock_irqrestore(&info->lock, flags); - return -EINVAL; - } - info->rbuf_fill_level = rbuf_fill_level; - if (rbuf_fill_level < 128) - info->rx_pio = 1; /* PIO mode */ - else - info->rx_pio = 0; /* DMA mode */ - rx_stop(info); /* restart receiver to use new fill level */ - } - - /* - * enable[1..0] = receiver enable command - * 0 = disable - * 1 = enable - * 2 = enable or force hunt mode if already enabled - */ - enable &= 3; - if (enable) { - if (!info->rx_enabled) - rx_start(info); - else if (enable == 2) { - /* force hunt mode (write 1 to RCR[3]) */ - wr_reg16(info, RCR, rd_reg16(info, RCR) | BIT3); - } - } else { - if (info->rx_enabled) - rx_stop(info); - } - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -/* - * wait for specified event to occur - */ -static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr) -{ - unsigned long flags; - int s; - int rc=0; - struct mgsl_icount cprev, cnow; - int events; - int mask; - struct _input_signal_events oldsigs, newsigs; - DECLARE_WAITQUEUE(wait, current); - - if (get_user(mask, mask_ptr)) - return -EFAULT; - - DBGINFO(("%s wait_mgsl_event(%d)\n", info->device_name, mask)); - - spin_lock_irqsave(&info->lock,flags); - - /* return immediately if state matches requested events */ - get_signals(info); - s = info->signals; - - events = mask & - ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + - ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + - ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + - ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); - if (events) { - spin_unlock_irqrestore(&info->lock,flags); - goto exit; - } - - /* save current irq counts */ - cprev = info->icount; - oldsigs = info->input_signal_events; - - /* enable hunt and idle irqs if needed */ - if (mask & (MgslEvent_ExitHuntMode+MgslEvent_IdleReceived)) { - unsigned short val = rd_reg16(info, SCR); - if (!(val & IRQ_RXIDLE)) - wr_reg16(info, SCR, (unsigned short)(val | IRQ_RXIDLE)); - } - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&info->event_wait_q, &wait); - - spin_unlock_irqrestore(&info->lock,flags); - - for(;;) { - schedule(); - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - - /* get current irq counts */ - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - newsigs = info->input_signal_events; - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); - - /* if no change, wait aborted for some reason */ - if (newsigs.dsr_up == oldsigs.dsr_up && - newsigs.dsr_down == oldsigs.dsr_down && - newsigs.dcd_up == oldsigs.dcd_up && - newsigs.dcd_down == oldsigs.dcd_down && - newsigs.cts_up == oldsigs.cts_up && - newsigs.cts_down == oldsigs.cts_down && - newsigs.ri_up == oldsigs.ri_up && - newsigs.ri_down == oldsigs.ri_down && - cnow.exithunt == cprev.exithunt && - cnow.rxidle == cprev.rxidle) { - rc = -EIO; - break; - } - - events = mask & - ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + - (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + - (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + - (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + - (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + - (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + - (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + - (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + - (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + - (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); - if (events) - break; - - cprev = cnow; - oldsigs = newsigs; - } - - remove_wait_queue(&info->event_wait_q, &wait); - set_current_state(TASK_RUNNING); - - - if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { - spin_lock_irqsave(&info->lock,flags); - if (!waitqueue_active(&info->event_wait_q)) { - /* disable enable exit hunt mode/idle rcvd IRQs */ - wr_reg16(info, SCR, - (unsigned short)(rd_reg16(info, SCR) & ~IRQ_RXIDLE)); - } - spin_unlock_irqrestore(&info->lock,flags); - } -exit: - if (rc == 0) - rc = put_user(events, mask_ptr); - return rc; -} - -static int get_interface(struct slgt_info *info, int __user *if_mode) -{ - DBGINFO(("%s get_interface=%x\n", info->device_name, info->if_mode)); - if (put_user(info->if_mode, if_mode)) - return -EFAULT; - return 0; -} - -static int set_interface(struct slgt_info *info, int if_mode) -{ - unsigned long flags; - unsigned short val; - - DBGINFO(("%s set_interface=%x)\n", info->device_name, if_mode)); - spin_lock_irqsave(&info->lock,flags); - info->if_mode = if_mode; - - msc_set_vcr(info); - - /* TCR (tx control) 07 1=RTS driver control */ - val = rd_reg16(info, TCR); - if (info->if_mode & MGSL_INTERFACE_RTS_EN) - val |= BIT7; - else - val &= ~BIT7; - wr_reg16(info, TCR, val); - - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -static int get_xsync(struct slgt_info *info, int __user *xsync) -{ - DBGINFO(("%s get_xsync=%x\n", info->device_name, info->xsync)); - if (put_user(info->xsync, xsync)) - return -EFAULT; - return 0; -} - -/* - * set extended sync pattern (1 to 4 bytes) for extended sync mode - * - * sync pattern is contained in least significant bytes of value - * most significant byte of sync pattern is oldest (1st sent/detected) - */ -static int set_xsync(struct slgt_info *info, int xsync) -{ - unsigned long flags; - - DBGINFO(("%s set_xsync=%x)\n", info->device_name, xsync)); - spin_lock_irqsave(&info->lock, flags); - info->xsync = xsync; - wr_reg32(info, XSR, xsync); - spin_unlock_irqrestore(&info->lock, flags); - return 0; -} - -static int get_xctrl(struct slgt_info *info, int __user *xctrl) -{ - DBGINFO(("%s get_xctrl=%x\n", info->device_name, info->xctrl)); - if (put_user(info->xctrl, xctrl)) - return -EFAULT; - return 0; -} - -/* - * set extended control options - * - * xctrl[31:19] reserved, must be zero - * xctrl[18:17] extended sync pattern length in bytes - * 00 = 1 byte in xsr[7:0] - * 01 = 2 bytes in xsr[15:0] - * 10 = 3 bytes in xsr[23:0] - * 11 = 4 bytes in xsr[31:0] - * xctrl[16] 1 = enable terminal count, 0=disabled - * xctrl[15:0] receive terminal count for fixed length packets - * value is count minus one (0 = 1 byte packet) - * when terminal count is reached, receiver - * automatically returns to hunt mode and receive - * FIFO contents are flushed to DMA buffers with - * end of frame (EOF) status - */ -static int set_xctrl(struct slgt_info *info, int xctrl) -{ - unsigned long flags; - - DBGINFO(("%s set_xctrl=%x)\n", info->device_name, xctrl)); - spin_lock_irqsave(&info->lock, flags); - info->xctrl = xctrl; - wr_reg32(info, XCR, xctrl); - spin_unlock_irqrestore(&info->lock, flags); - return 0; -} - -/* - * set general purpose IO pin state and direction - * - * user_gpio fields: - * state each bit indicates a pin state - * smask set bit indicates pin state to set - * dir each bit indicates a pin direction (0=input, 1=output) - * dmask set bit indicates pin direction to set - */ -static int set_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) -{ - unsigned long flags; - struct gpio_desc gpio; - __u32 data; - - if (!info->gpio_present) - return -EINVAL; - if (copy_from_user(&gpio, user_gpio, sizeof(gpio))) - return -EFAULT; - DBGINFO(("%s set_gpio state=%08x smask=%08x dir=%08x dmask=%08x\n", - info->device_name, gpio.state, gpio.smask, - gpio.dir, gpio.dmask)); - - spin_lock_irqsave(&info->port_array[0]->lock, flags); - if (gpio.dmask) { - data = rd_reg32(info, IODR); - data |= gpio.dmask & gpio.dir; - data &= ~(gpio.dmask & ~gpio.dir); - wr_reg32(info, IODR, data); - } - if (gpio.smask) { - data = rd_reg32(info, IOVR); - data |= gpio.smask & gpio.state; - data &= ~(gpio.smask & ~gpio.state); - wr_reg32(info, IOVR, data); - } - spin_unlock_irqrestore(&info->port_array[0]->lock, flags); - - return 0; -} - -/* - * get general purpose IO pin state and direction - */ -static int get_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) -{ - struct gpio_desc gpio; - if (!info->gpio_present) - return -EINVAL; - gpio.state = rd_reg32(info, IOVR); - gpio.smask = 0xffffffff; - gpio.dir = rd_reg32(info, IODR); - gpio.dmask = 0xffffffff; - if (copy_to_user(user_gpio, &gpio, sizeof(gpio))) - return -EFAULT; - DBGINFO(("%s get_gpio state=%08x dir=%08x\n", - info->device_name, gpio.state, gpio.dir)); - return 0; -} - -/* - * conditional wait facility - */ -static void init_cond_wait(struct cond_wait *w, unsigned int data) -{ - init_waitqueue_head(&w->q); - init_waitqueue_entry(&w->wait, current); - w->data = data; -} - -static void add_cond_wait(struct cond_wait **head, struct cond_wait *w) -{ - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&w->q, &w->wait); - w->next = *head; - *head = w; -} - -static void remove_cond_wait(struct cond_wait **head, struct cond_wait *cw) -{ - struct cond_wait *w, *prev; - remove_wait_queue(&cw->q, &cw->wait); - set_current_state(TASK_RUNNING); - for (w = *head, prev = NULL ; w != NULL ; prev = w, w = w->next) { - if (w == cw) { - if (prev != NULL) - prev->next = w->next; - else - *head = w->next; - break; - } - } -} - -static void flush_cond_wait(struct cond_wait **head) -{ - while (*head != NULL) { - wake_up_interruptible(&(*head)->q); - *head = (*head)->next; - } -} - -/* - * wait for general purpose I/O pin(s) to enter specified state - * - * user_gpio fields: - * state - bit indicates target pin state - * smask - set bit indicates watched pin - * - * The wait ends when at least one watched pin enters the specified - * state. When 0 (no error) is returned, user_gpio->state is set to the - * state of all GPIO pins when the wait ends. - * - * Note: Each pin may be a dedicated input, dedicated output, or - * configurable input/output. The number and configuration of pins - * varies with the specific adapter model. Only input pins (dedicated - * or configured) can be monitored with this function. - */ -static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) -{ - unsigned long flags; - int rc = 0; - struct gpio_desc gpio; - struct cond_wait wait; - u32 state; - - if (!info->gpio_present) - return -EINVAL; - if (copy_from_user(&gpio, user_gpio, sizeof(gpio))) - return -EFAULT; - DBGINFO(("%s wait_gpio() state=%08x smask=%08x\n", - info->device_name, gpio.state, gpio.smask)); - /* ignore output pins identified by set IODR bit */ - if ((gpio.smask &= ~rd_reg32(info, IODR)) == 0) - return -EINVAL; - init_cond_wait(&wait, gpio.smask); - - spin_lock_irqsave(&info->port_array[0]->lock, flags); - /* enable interrupts for watched pins */ - wr_reg32(info, IOER, rd_reg32(info, IOER) | gpio.smask); - /* get current pin states */ - state = rd_reg32(info, IOVR); - - if (gpio.smask & ~(state ^ gpio.state)) { - /* already in target state */ - gpio.state = state; - } else { - /* wait for target state */ - add_cond_wait(&info->gpio_wait_q, &wait); - spin_unlock_irqrestore(&info->port_array[0]->lock, flags); - schedule(); - if (signal_pending(current)) - rc = -ERESTARTSYS; - else - gpio.state = wait.data; - spin_lock_irqsave(&info->port_array[0]->lock, flags); - remove_cond_wait(&info->gpio_wait_q, &wait); - } - - /* disable all GPIO interrupts if no waiting processes */ - if (info->gpio_wait_q == NULL) - wr_reg32(info, IOER, 0); - spin_unlock_irqrestore(&info->port_array[0]->lock, flags); - - if ((rc == 0) && copy_to_user(user_gpio, &gpio, sizeof(gpio))) - rc = -EFAULT; - return rc; -} - -static int modem_input_wait(struct slgt_info *info,int arg) -{ - unsigned long flags; - int rc; - struct mgsl_icount cprev, cnow; - DECLARE_WAITQUEUE(wait, current); - - /* save current irq counts */ - spin_lock_irqsave(&info->lock,flags); - cprev = info->icount; - add_wait_queue(&info->status_event_wait_q, &wait); - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); - - for(;;) { - schedule(); - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - - /* get new irq counts */ - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); - - /* if no change, wait aborted for some reason */ - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { - rc = -EIO; - break; - } - - /* check for change in caller specified modem input */ - if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || - (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || - (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || - (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { - rc = 0; - break; - } - - cprev = cnow; - } - remove_wait_queue(&info->status_event_wait_q, &wait); - set_current_state(TASK_RUNNING); - return rc; -} - -/* - * return state of serial control and status signals - */ -static int tiocmget(struct tty_struct *tty) -{ - struct slgt_info *info = tty->driver_data; - unsigned int result; - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - - result = ((info->signals & SerialSignal_RTS) ? TIOCM_RTS:0) + - ((info->signals & SerialSignal_DTR) ? TIOCM_DTR:0) + - ((info->signals & SerialSignal_DCD) ? TIOCM_CAR:0) + - ((info->signals & SerialSignal_RI) ? TIOCM_RNG:0) + - ((info->signals & SerialSignal_DSR) ? TIOCM_DSR:0) + - ((info->signals & SerialSignal_CTS) ? TIOCM_CTS:0); - - DBGINFO(("%s tiocmget value=%08X\n", info->device_name, result)); - return result; -} - -/* - * set modem control signals (DTR/RTS) - * - * cmd signal command: TIOCMBIS = set bit TIOCMBIC = clear bit - * TIOCMSET = set/clear signal values - * value bit mask for command - */ -static int tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct slgt_info *info = tty->driver_data; - unsigned long flags; - - DBGINFO(("%s tiocmset(%x,%x)\n", info->device_name, set, clear)); - - if (set & TIOCM_RTS) - info->signals |= SerialSignal_RTS; - if (set & TIOCM_DTR) - info->signals |= SerialSignal_DTR; - if (clear & TIOCM_RTS) - info->signals &= ~SerialSignal_RTS; - if (clear & TIOCM_DTR) - info->signals &= ~SerialSignal_DTR; - - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -static int carrier_raised(struct tty_port *port) -{ - unsigned long flags; - struct slgt_info *info = container_of(port, struct slgt_info, port); - - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - return (info->signals & SerialSignal_DCD) ? 1 : 0; -} - -static void dtr_rts(struct tty_port *port, int on) -{ - unsigned long flags; - struct slgt_info *info = container_of(port, struct slgt_info, port); - - spin_lock_irqsave(&info->lock,flags); - if (on) - info->signals |= SerialSignal_RTS + SerialSignal_DTR; - else - info->signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); -} - - -/* - * block current process until the device is ready to open - */ -static int block_til_ready(struct tty_struct *tty, struct file *filp, - struct slgt_info *info) -{ - DECLARE_WAITQUEUE(wait, current); - int retval; - bool do_clocal = false; - bool extra_count = false; - unsigned long flags; - int cd; - struct tty_port *port = &info->port; - - DBGINFO(("%s block_til_ready\n", tty->driver->name)); - - if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ - /* nonblock mode is set or port is not enabled */ - port->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - if (tty->termios->c_cflag & CLOCAL) - do_clocal = true; - - /* Wait for carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, port->count is dropped by one, so that - * close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - - retval = 0; - add_wait_queue(&port->open_wait, &wait); - - spin_lock_irqsave(&info->lock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = true; - port->count--; - } - spin_unlock_irqrestore(&info->lock, flags); - port->blocked_open++; - - while (1) { - if ((tty->termios->c_cflag & CBAUD)) - tty_port_raise_dtr_rts(port); - - set_current_state(TASK_INTERRUPTIBLE); - - if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){ - retval = (port->flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS; - break; - } - - cd = tty_port_carrier_raised(port); - - if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd )) - break; - - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - - DBGINFO(("%s block_til_ready wait\n", tty->driver->name)); - tty_unlock(); - schedule(); - tty_lock(); - } - - set_current_state(TASK_RUNNING); - remove_wait_queue(&port->open_wait, &wait); - - if (extra_count) - port->count++; - port->blocked_open--; - - if (!retval) - port->flags |= ASYNC_NORMAL_ACTIVE; - - DBGINFO(("%s block_til_ready ready, rc=%d\n", tty->driver->name, retval)); - return retval; -} - -static int alloc_tmp_rbuf(struct slgt_info *info) -{ - info->tmp_rbuf = kmalloc(info->max_frame_size + 5, GFP_KERNEL); - if (info->tmp_rbuf == NULL) - return -ENOMEM; - return 0; -} - -static void free_tmp_rbuf(struct slgt_info *info) -{ - kfree(info->tmp_rbuf); - info->tmp_rbuf = NULL; -} - -/* - * allocate DMA descriptor lists. - */ -static int alloc_desc(struct slgt_info *info) -{ - unsigned int i; - unsigned int pbufs; - - /* allocate memory to hold descriptor lists */ - info->bufs = pci_alloc_consistent(info->pdev, DESC_LIST_SIZE, &info->bufs_dma_addr); - if (info->bufs == NULL) - return -ENOMEM; - - memset(info->bufs, 0, DESC_LIST_SIZE); - - info->rbufs = (struct slgt_desc*)info->bufs; - info->tbufs = ((struct slgt_desc*)info->bufs) + info->rbuf_count; - - pbufs = (unsigned int)info->bufs_dma_addr; - - /* - * Build circular lists of descriptors - */ - - for (i=0; i < info->rbuf_count; i++) { - /* physical address of this descriptor */ - info->rbufs[i].pdesc = pbufs + (i * sizeof(struct slgt_desc)); - - /* physical address of next descriptor */ - if (i == info->rbuf_count - 1) - info->rbufs[i].next = cpu_to_le32(pbufs); - else - info->rbufs[i].next = cpu_to_le32(pbufs + ((i+1) * sizeof(struct slgt_desc))); - set_desc_count(info->rbufs[i], DMABUFSIZE); - } - - for (i=0; i < info->tbuf_count; i++) { - /* physical address of this descriptor */ - info->tbufs[i].pdesc = pbufs + ((info->rbuf_count + i) * sizeof(struct slgt_desc)); - - /* physical address of next descriptor */ - if (i == info->tbuf_count - 1) - info->tbufs[i].next = cpu_to_le32(pbufs + info->rbuf_count * sizeof(struct slgt_desc)); - else - info->tbufs[i].next = cpu_to_le32(pbufs + ((info->rbuf_count + i + 1) * sizeof(struct slgt_desc))); - } - - return 0; -} - -static void free_desc(struct slgt_info *info) -{ - if (info->bufs != NULL) { - pci_free_consistent(info->pdev, DESC_LIST_SIZE, info->bufs, info->bufs_dma_addr); - info->bufs = NULL; - info->rbufs = NULL; - info->tbufs = NULL; - } -} - -static int alloc_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count) -{ - int i; - for (i=0; i < count; i++) { - if ((bufs[i].buf = pci_alloc_consistent(info->pdev, DMABUFSIZE, &bufs[i].buf_dma_addr)) == NULL) - return -ENOMEM; - bufs[i].pbuf = cpu_to_le32((unsigned int)bufs[i].buf_dma_addr); - } - return 0; -} - -static void free_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count) -{ - int i; - for (i=0; i < count; i++) { - if (bufs[i].buf == NULL) - continue; - pci_free_consistent(info->pdev, DMABUFSIZE, bufs[i].buf, bufs[i].buf_dma_addr); - bufs[i].buf = NULL; - } -} - -static int alloc_dma_bufs(struct slgt_info *info) -{ - info->rbuf_count = 32; - info->tbuf_count = 32; - - if (alloc_desc(info) < 0 || - alloc_bufs(info, info->rbufs, info->rbuf_count) < 0 || - alloc_bufs(info, info->tbufs, info->tbuf_count) < 0 || - alloc_tmp_rbuf(info) < 0) { - DBGERR(("%s DMA buffer alloc fail\n", info->device_name)); - return -ENOMEM; - } - reset_rbufs(info); - return 0; -} - -static void free_dma_bufs(struct slgt_info *info) -{ - if (info->bufs) { - free_bufs(info, info->rbufs, info->rbuf_count); - free_bufs(info, info->tbufs, info->tbuf_count); - free_desc(info); - } - free_tmp_rbuf(info); -} - -static int claim_resources(struct slgt_info *info) -{ - if (request_mem_region(info->phys_reg_addr, SLGT_REG_SIZE, "synclink_gt") == NULL) { - DBGERR(("%s reg addr conflict, addr=%08X\n", - info->device_name, info->phys_reg_addr)); - info->init_error = DiagStatus_AddressConflict; - goto errout; - } - else - info->reg_addr_requested = true; - - info->reg_addr = ioremap_nocache(info->phys_reg_addr, SLGT_REG_SIZE); - if (!info->reg_addr) { - DBGERR(("%s cant map device registers, addr=%08X\n", - info->device_name, info->phys_reg_addr)); - info->init_error = DiagStatus_CantAssignPciResources; - goto errout; - } - return 0; - -errout: - release_resources(info); - return -ENODEV; -} - -static void release_resources(struct slgt_info *info) -{ - if (info->irq_requested) { - free_irq(info->irq_level, info); - info->irq_requested = false; - } - - if (info->reg_addr_requested) { - release_mem_region(info->phys_reg_addr, SLGT_REG_SIZE); - info->reg_addr_requested = false; - } - - if (info->reg_addr) { - iounmap(info->reg_addr); - info->reg_addr = NULL; - } -} - -/* Add the specified device instance data structure to the - * global linked list of devices and increment the device count. - */ -static void add_device(struct slgt_info *info) -{ - char *devstr; - - info->next_device = NULL; - info->line = slgt_device_count; - sprintf(info->device_name, "%s%d", tty_dev_prefix, info->line); - - if (info->line < MAX_DEVICES) { - if (maxframe[info->line]) - info->max_frame_size = maxframe[info->line]; - } - - slgt_device_count++; - - if (!slgt_device_list) - slgt_device_list = info; - else { - struct slgt_info *current_dev = slgt_device_list; - while(current_dev->next_device) - current_dev = current_dev->next_device; - current_dev->next_device = info; - } - - if (info->max_frame_size < 4096) - info->max_frame_size = 4096; - else if (info->max_frame_size > 65535) - info->max_frame_size = 65535; - - switch(info->pdev->device) { - case SYNCLINK_GT_DEVICE_ID: - devstr = "GT"; - break; - case SYNCLINK_GT2_DEVICE_ID: - devstr = "GT2"; - break; - case SYNCLINK_GT4_DEVICE_ID: - devstr = "GT4"; - break; - case SYNCLINK_AC_DEVICE_ID: - devstr = "AC"; - info->params.mode = MGSL_MODE_ASYNC; - break; - default: - devstr = "(unknown model)"; - } - printk("SyncLink %s %s IO=%08x IRQ=%d MaxFrameSize=%u\n", - devstr, info->device_name, info->phys_reg_addr, - info->irq_level, info->max_frame_size); - -#if SYNCLINK_GENERIC_HDLC - hdlcdev_init(info); -#endif -} - -static const struct tty_port_operations slgt_port_ops = { - .carrier_raised = carrier_raised, - .dtr_rts = dtr_rts, -}; - -/* - * allocate device instance structure, return NULL on failure - */ -static struct slgt_info *alloc_dev(int adapter_num, int port_num, struct pci_dev *pdev) -{ - struct slgt_info *info; - - info = kzalloc(sizeof(struct slgt_info), GFP_KERNEL); - - if (!info) { - DBGERR(("%s device alloc failed adapter=%d port=%d\n", - driver_name, adapter_num, port_num)); - } else { - tty_port_init(&info->port); - info->port.ops = &slgt_port_ops; - info->magic = MGSL_MAGIC; - INIT_WORK(&info->task, bh_handler); - info->max_frame_size = 4096; - info->base_clock = 14745600; - info->rbuf_fill_level = DMABUFSIZE; - info->port.close_delay = 5*HZ/10; - info->port.closing_wait = 30*HZ; - init_waitqueue_head(&info->status_event_wait_q); - init_waitqueue_head(&info->event_wait_q); - spin_lock_init(&info->netlock); - memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); - info->idle_mode = HDLC_TXIDLE_FLAGS; - info->adapter_num = adapter_num; - info->port_num = port_num; - - setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info); - setup_timer(&info->rx_timer, rx_timeout, (unsigned long)info); - - /* Copy configuration info to device instance data */ - info->pdev = pdev; - info->irq_level = pdev->irq; - info->phys_reg_addr = pci_resource_start(pdev,0); - - info->bus_type = MGSL_BUS_TYPE_PCI; - info->irq_flags = IRQF_SHARED; - - info->init_error = -1; /* assume error, set to 0 on successful init */ - } - - return info; -} - -static void device_init(int adapter_num, struct pci_dev *pdev) -{ - struct slgt_info *port_array[SLGT_MAX_PORTS]; - int i; - int port_count = 1; - - if (pdev->device == SYNCLINK_GT2_DEVICE_ID) - port_count = 2; - else if (pdev->device == SYNCLINK_GT4_DEVICE_ID) - port_count = 4; - - /* allocate device instances for all ports */ - for (i=0; i < port_count; ++i) { - port_array[i] = alloc_dev(adapter_num, i, pdev); - if (port_array[i] == NULL) { - for (--i; i >= 0; --i) - kfree(port_array[i]); - return; - } - } - - /* give copy of port_array to all ports and add to device list */ - for (i=0; i < port_count; ++i) { - memcpy(port_array[i]->port_array, port_array, sizeof(port_array)); - add_device(port_array[i]); - port_array[i]->port_count = port_count; - spin_lock_init(&port_array[i]->lock); - } - - /* Allocate and claim adapter resources */ - if (!claim_resources(port_array[0])) { - - alloc_dma_bufs(port_array[0]); - - /* copy resource information from first port to others */ - for (i = 1; i < port_count; ++i) { - port_array[i]->irq_level = port_array[0]->irq_level; - port_array[i]->reg_addr = port_array[0]->reg_addr; - alloc_dma_bufs(port_array[i]); - } - - if (request_irq(port_array[0]->irq_level, - slgt_interrupt, - port_array[0]->irq_flags, - port_array[0]->device_name, - port_array[0]) < 0) { - DBGERR(("%s request_irq failed IRQ=%d\n", - port_array[0]->device_name, - port_array[0]->irq_level)); - } else { - port_array[0]->irq_requested = true; - adapter_test(port_array[0]); - for (i=1 ; i < port_count ; i++) { - port_array[i]->init_error = port_array[0]->init_error; - port_array[i]->gpio_present = port_array[0]->gpio_present; - } - } - } - - for (i=0; i < port_count; ++i) - tty_register_device(serial_driver, port_array[i]->line, &(port_array[i]->pdev->dev)); -} - -static int __devinit init_one(struct pci_dev *dev, - const struct pci_device_id *ent) -{ - if (pci_enable_device(dev)) { - printk("error enabling pci device %p\n", dev); - return -EIO; - } - pci_set_master(dev); - device_init(slgt_device_count, dev); - return 0; -} - -static void __devexit remove_one(struct pci_dev *dev) -{ -} - -static const struct tty_operations ops = { - .open = open, - .close = close, - .write = write, - .put_char = put_char, - .flush_chars = flush_chars, - .write_room = write_room, - .chars_in_buffer = chars_in_buffer, - .flush_buffer = flush_buffer, - .ioctl = ioctl, - .compat_ioctl = slgt_compat_ioctl, - .throttle = throttle, - .unthrottle = unthrottle, - .send_xchar = send_xchar, - .break_ctl = set_break, - .wait_until_sent = wait_until_sent, - .set_termios = set_termios, - .stop = tx_hold, - .start = tx_release, - .hangup = hangup, - .tiocmget = tiocmget, - .tiocmset = tiocmset, - .get_icount = get_icount, - .proc_fops = &synclink_gt_proc_fops, -}; - -static void slgt_cleanup(void) -{ - int rc; - struct slgt_info *info; - struct slgt_info *tmp; - - printk(KERN_INFO "unload %s\n", driver_name); - - if (serial_driver) { - for (info=slgt_device_list ; info != NULL ; info=info->next_device) - tty_unregister_device(serial_driver, info->line); - if ((rc = tty_unregister_driver(serial_driver))) - DBGERR(("tty_unregister_driver error=%d\n", rc)); - put_tty_driver(serial_driver); - } - - /* reset devices */ - info = slgt_device_list; - while(info) { - reset_port(info); - info = info->next_device; - } - - /* release devices */ - info = slgt_device_list; - while(info) { -#if SYNCLINK_GENERIC_HDLC - hdlcdev_exit(info); -#endif - free_dma_bufs(info); - free_tmp_rbuf(info); - if (info->port_num == 0) - release_resources(info); - tmp = info; - info = info->next_device; - kfree(tmp); - } - - if (pci_registered) - pci_unregister_driver(&pci_driver); -} - -/* - * Driver initialization entry point. - */ -static int __init slgt_init(void) -{ - int rc; - - printk(KERN_INFO "%s\n", driver_name); - - serial_driver = alloc_tty_driver(MAX_DEVICES); - if (!serial_driver) { - printk("%s can't allocate tty driver\n", driver_name); - return -ENOMEM; - } - - /* Initialize the tty_driver structure */ - - serial_driver->owner = THIS_MODULE; - serial_driver->driver_name = tty_driver_name; - serial_driver->name = tty_dev_prefix; - serial_driver->major = ttymajor; - serial_driver->minor_start = 64; - serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - serial_driver->subtype = SERIAL_TYPE_NORMAL; - serial_driver->init_termios = tty_std_termios; - serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - serial_driver->init_termios.c_ispeed = 9600; - serial_driver->init_termios.c_ospeed = 9600; - serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(serial_driver, &ops); - if ((rc = tty_register_driver(serial_driver)) < 0) { - DBGERR(("%s can't register serial driver\n", driver_name)); - put_tty_driver(serial_driver); - serial_driver = NULL; - goto error; - } - - printk(KERN_INFO "%s, tty major#%d\n", - driver_name, serial_driver->major); - - slgt_device_count = 0; - if ((rc = pci_register_driver(&pci_driver)) < 0) { - printk("%s pci_register_driver error=%d\n", driver_name, rc); - goto error; - } - pci_registered = true; - - if (!slgt_device_list) - printk("%s no devices found\n",driver_name); - - return 0; - -error: - slgt_cleanup(); - return rc; -} - -static void __exit slgt_exit(void) -{ - slgt_cleanup(); -} - -module_init(slgt_init); -module_exit(slgt_exit); - -/* - * register access routines - */ - -#define CALC_REGADDR() \ - unsigned long reg_addr = ((unsigned long)info->reg_addr) + addr; \ - if (addr >= 0x80) \ - reg_addr += (info->port_num) * 32; \ - else if (addr >= 0x40) \ - reg_addr += (info->port_num) * 16; - -static __u8 rd_reg8(struct slgt_info *info, unsigned int addr) -{ - CALC_REGADDR(); - return readb((void __iomem *)reg_addr); -} - -static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value) -{ - CALC_REGADDR(); - writeb(value, (void __iomem *)reg_addr); -} - -static __u16 rd_reg16(struct slgt_info *info, unsigned int addr) -{ - CALC_REGADDR(); - return readw((void __iomem *)reg_addr); -} - -static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value) -{ - CALC_REGADDR(); - writew(value, (void __iomem *)reg_addr); -} - -static __u32 rd_reg32(struct slgt_info *info, unsigned int addr) -{ - CALC_REGADDR(); - return readl((void __iomem *)reg_addr); -} - -static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value) -{ - CALC_REGADDR(); - writel(value, (void __iomem *)reg_addr); -} - -static void rdma_reset(struct slgt_info *info) -{ - unsigned int i; - - /* set reset bit */ - wr_reg32(info, RDCSR, BIT1); - - /* wait for enable bit cleared */ - for(i=0 ; i < 1000 ; i++) - if (!(rd_reg32(info, RDCSR) & BIT0)) - break; -} - -static void tdma_reset(struct slgt_info *info) -{ - unsigned int i; - - /* set reset bit */ - wr_reg32(info, TDCSR, BIT1); - - /* wait for enable bit cleared */ - for(i=0 ; i < 1000 ; i++) - if (!(rd_reg32(info, TDCSR) & BIT0)) - break; -} - -/* - * enable internal loopback - * TxCLK and RxCLK are generated from BRG - * and TxD is looped back to RxD internally. - */ -static void enable_loopback(struct slgt_info *info) -{ - /* SCR (serial control) BIT2=looopback enable */ - wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT2)); - - if (info->params.mode != MGSL_MODE_ASYNC) { - /* CCR (clock control) - * 07..05 tx clock source (010 = BRG) - * 04..02 rx clock source (010 = BRG) - * 01 auxclk enable (0 = disable) - * 00 BRG enable (1 = enable) - * - * 0100 1001 - */ - wr_reg8(info, CCR, 0x49); - - /* set speed if available, otherwise use default */ - if (info->params.clock_speed) - set_rate(info, info->params.clock_speed); - else - set_rate(info, 3686400); - } -} - -/* - * set baud rate generator to specified rate - */ -static void set_rate(struct slgt_info *info, u32 rate) -{ - unsigned int div; - unsigned int osc = info->base_clock; - - /* div = osc/rate - 1 - * - * Round div up if osc/rate is not integer to - * force to next slowest rate. - */ - - if (rate) { - div = osc/rate; - if (!(osc % rate) && div) - div--; - wr_reg16(info, BDR, (unsigned short)div); - } -} - -static void rx_stop(struct slgt_info *info) -{ - unsigned short val; - - /* disable and reset receiver */ - val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */ - wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */ - wr_reg16(info, RCR, val); /* clear reset bit */ - - slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA + IRQ_RXIDLE); - - /* clear pending rx interrupts */ - wr_reg16(info, SSR, IRQ_RXIDLE + IRQ_RXOVER); - - rdma_reset(info); - - info->rx_enabled = false; - info->rx_restart = false; -} - -static void rx_start(struct slgt_info *info) -{ - unsigned short val; - - slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA); - - /* clear pending rx overrun IRQ */ - wr_reg16(info, SSR, IRQ_RXOVER); - - /* reset and disable receiver */ - val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */ - wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */ - wr_reg16(info, RCR, val); /* clear reset bit */ - - rdma_reset(info); - reset_rbufs(info); - - if (info->rx_pio) { - /* rx request when rx FIFO not empty */ - wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) & ~BIT14)); - slgt_irq_on(info, IRQ_RXDATA); - if (info->params.mode == MGSL_MODE_ASYNC) { - /* enable saving of rx status */ - wr_reg32(info, RDCSR, BIT6); - } - } else { - /* rx request when rx FIFO half full */ - wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT14)); - /* set 1st descriptor address */ - wr_reg32(info, RDDAR, info->rbufs[0].pdesc); - - if (info->params.mode != MGSL_MODE_ASYNC) { - /* enable rx DMA and DMA interrupt */ - wr_reg32(info, RDCSR, (BIT2 + BIT0)); - } else { - /* enable saving of rx status, rx DMA and DMA interrupt */ - wr_reg32(info, RDCSR, (BIT6 + BIT2 + BIT0)); - } - } - - slgt_irq_on(info, IRQ_RXOVER); - - /* enable receiver */ - wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | BIT1)); - - info->rx_restart = false; - info->rx_enabled = true; -} - -static void tx_start(struct slgt_info *info) -{ - if (!info->tx_enabled) { - wr_reg16(info, TCR, - (unsigned short)((rd_reg16(info, TCR) | BIT1) & ~BIT2)); - info->tx_enabled = true; - } - - if (desc_count(info->tbufs[info->tbuf_start])) { - info->drop_rts_on_tx_done = false; - - if (info->params.mode != MGSL_MODE_ASYNC) { - if (info->params.flags & HDLC_FLAG_AUTO_RTS) { - get_signals(info); - if (!(info->signals & SerialSignal_RTS)) { - info->signals |= SerialSignal_RTS; - set_signals(info); - info->drop_rts_on_tx_done = true; - } - } - - slgt_irq_off(info, IRQ_TXDATA); - slgt_irq_on(info, IRQ_TXUNDER + IRQ_TXIDLE); - /* clear tx idle and underrun status bits */ - wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER)); - } else { - slgt_irq_off(info, IRQ_TXDATA); - slgt_irq_on(info, IRQ_TXIDLE); - /* clear tx idle status bit */ - wr_reg16(info, SSR, IRQ_TXIDLE); - } - /* set 1st descriptor address and start DMA */ - wr_reg32(info, TDDAR, info->tbufs[info->tbuf_start].pdesc); - wr_reg32(info, TDCSR, BIT2 + BIT0); - info->tx_active = true; - } -} - -static void tx_stop(struct slgt_info *info) -{ - unsigned short val; - - del_timer(&info->tx_timer); - - tdma_reset(info); - - /* reset and disable transmitter */ - val = rd_reg16(info, TCR) & ~BIT1; /* clear enable bit */ - wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */ - - slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER); - - /* clear tx idle and underrun status bit */ - wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER)); - - reset_tbufs(info); - - info->tx_enabled = false; - info->tx_active = false; -} - -static void reset_port(struct slgt_info *info) -{ - if (!info->reg_addr) - return; - - tx_stop(info); - rx_stop(info); - - info->signals &= ~(SerialSignal_DTR + SerialSignal_RTS); - set_signals(info); - - slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); -} - -static void reset_adapter(struct slgt_info *info) -{ - int i; - for (i=0; i < info->port_count; ++i) { - if (info->port_array[i]) - reset_port(info->port_array[i]); - } -} - -static void async_mode(struct slgt_info *info) -{ - unsigned short val; - - slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); - tx_stop(info); - rx_stop(info); - - /* TCR (tx control) - * - * 15..13 mode, 010=async - * 12..10 encoding, 000=NRZ - * 09 parity enable - * 08 1=odd parity, 0=even parity - * 07 1=RTS driver control - * 06 1=break enable - * 05..04 character length - * 00=5 bits - * 01=6 bits - * 10=7 bits - * 11=8 bits - * 03 0=1 stop bit, 1=2 stop bits - * 02 reset - * 01 enable - * 00 auto-CTS enable - */ - val = 0x4000; - - if (info->if_mode & MGSL_INTERFACE_RTS_EN) - val |= BIT7; - - if (info->params.parity != ASYNC_PARITY_NONE) { - val |= BIT9; - if (info->params.parity == ASYNC_PARITY_ODD) - val |= BIT8; - } - - switch (info->params.data_bits) - { - case 6: val |= BIT4; break; - case 7: val |= BIT5; break; - case 8: val |= BIT5 + BIT4; break; - } - - if (info->params.stop_bits != 1) - val |= BIT3; - - if (info->params.flags & HDLC_FLAG_AUTO_CTS) - val |= BIT0; - - wr_reg16(info, TCR, val); - - /* RCR (rx control) - * - * 15..13 mode, 010=async - * 12..10 encoding, 000=NRZ - * 09 parity enable - * 08 1=odd parity, 0=even parity - * 07..06 reserved, must be 0 - * 05..04 character length - * 00=5 bits - * 01=6 bits - * 10=7 bits - * 11=8 bits - * 03 reserved, must be zero - * 02 reset - * 01 enable - * 00 auto-DCD enable - */ - val = 0x4000; - - if (info->params.parity != ASYNC_PARITY_NONE) { - val |= BIT9; - if (info->params.parity == ASYNC_PARITY_ODD) - val |= BIT8; - } - - switch (info->params.data_bits) - { - case 6: val |= BIT4; break; - case 7: val |= BIT5; break; - case 8: val |= BIT5 + BIT4; break; - } - - if (info->params.flags & HDLC_FLAG_AUTO_DCD) - val |= BIT0; - - wr_reg16(info, RCR, val); - - /* CCR (clock control) - * - * 07..05 011 = tx clock source is BRG/16 - * 04..02 010 = rx clock source is BRG - * 01 0 = auxclk disabled - * 00 1 = BRG enabled - * - * 0110 1001 - */ - wr_reg8(info, CCR, 0x69); - - msc_set_vcr(info); - - /* SCR (serial control) - * - * 15 1=tx req on FIFO half empty - * 14 1=rx req on FIFO half full - * 13 tx data IRQ enable - * 12 tx idle IRQ enable - * 11 rx break on IRQ enable - * 10 rx data IRQ enable - * 09 rx break off IRQ enable - * 08 overrun IRQ enable - * 07 DSR IRQ enable - * 06 CTS IRQ enable - * 05 DCD IRQ enable - * 04 RI IRQ enable - * 03 0=16x sampling, 1=8x sampling - * 02 1=txd->rxd internal loopback enable - * 01 reserved, must be zero - * 00 1=master IRQ enable - */ - val = BIT15 + BIT14 + BIT0; - /* JCR[8] : 1 = x8 async mode feature available */ - if ((rd_reg32(info, JCR) & BIT8) && info->params.data_rate && - ((info->base_clock < (info->params.data_rate * 16)) || - (info->base_clock % (info->params.data_rate * 16)))) { - /* use 8x sampling */ - val |= BIT3; - set_rate(info, info->params.data_rate * 8); - } else { - /* use 16x sampling */ - set_rate(info, info->params.data_rate * 16); - } - wr_reg16(info, SCR, val); - - slgt_irq_on(info, IRQ_RXBREAK | IRQ_RXOVER); - - if (info->params.loopback) - enable_loopback(info); -} - -static void sync_mode(struct slgt_info *info) -{ - unsigned short val; - - slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); - tx_stop(info); - rx_stop(info); - - /* TCR (tx control) - * - * 15..13 mode - * 000=HDLC/SDLC - * 001=raw bit synchronous - * 010=asynchronous/isochronous - * 011=monosync byte synchronous - * 100=bisync byte synchronous - * 101=xsync byte synchronous - * 12..10 encoding - * 09 CRC enable - * 08 CRC32 - * 07 1=RTS driver control - * 06 preamble enable - * 05..04 preamble length - * 03 share open/close flag - * 02 reset - * 01 enable - * 00 auto-CTS enable - */ - val = BIT2; - - switch(info->params.mode) { - case MGSL_MODE_XSYNC: - val |= BIT15 + BIT13; - break; - case MGSL_MODE_MONOSYNC: val |= BIT14 + BIT13; break; - case MGSL_MODE_BISYNC: val |= BIT15; break; - case MGSL_MODE_RAW: val |= BIT13; break; - } - if (info->if_mode & MGSL_INTERFACE_RTS_EN) - val |= BIT7; - - switch(info->params.encoding) - { - case HDLC_ENCODING_NRZB: val |= BIT10; break; - case HDLC_ENCODING_NRZI_MARK: val |= BIT11; break; - case HDLC_ENCODING_NRZI: val |= BIT11 + BIT10; break; - case HDLC_ENCODING_BIPHASE_MARK: val |= BIT12; break; - case HDLC_ENCODING_BIPHASE_SPACE: val |= BIT12 + BIT10; break; - case HDLC_ENCODING_BIPHASE_LEVEL: val |= BIT12 + BIT11; break; - case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: val |= BIT12 + BIT11 + BIT10; break; - } - - switch (info->params.crc_type & HDLC_CRC_MASK) - { - case HDLC_CRC_16_CCITT: val |= BIT9; break; - case HDLC_CRC_32_CCITT: val |= BIT9 + BIT8; break; - } - - if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE) - val |= BIT6; - - switch (info->params.preamble_length) - { - case HDLC_PREAMBLE_LENGTH_16BITS: val |= BIT5; break; - case HDLC_PREAMBLE_LENGTH_32BITS: val |= BIT4; break; - case HDLC_PREAMBLE_LENGTH_64BITS: val |= BIT5 + BIT4; break; - } - - if (info->params.flags & HDLC_FLAG_AUTO_CTS) - val |= BIT0; - - wr_reg16(info, TCR, val); - - /* TPR (transmit preamble) */ - - switch (info->params.preamble) - { - case HDLC_PREAMBLE_PATTERN_FLAGS: val = 0x7e; break; - case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break; - case HDLC_PREAMBLE_PATTERN_ZEROS: val = 0x00; break; - case HDLC_PREAMBLE_PATTERN_10: val = 0x55; break; - case HDLC_PREAMBLE_PATTERN_01: val = 0xaa; break; - default: val = 0x7e; break; - } - wr_reg8(info, TPR, (unsigned char)val); - - /* RCR (rx control) - * - * 15..13 mode - * 000=HDLC/SDLC - * 001=raw bit synchronous - * 010=asynchronous/isochronous - * 011=monosync byte synchronous - * 100=bisync byte synchronous - * 101=xsync byte synchronous - * 12..10 encoding - * 09 CRC enable - * 08 CRC32 - * 07..03 reserved, must be 0 - * 02 reset - * 01 enable - * 00 auto-DCD enable - */ - val = 0; - - switch(info->params.mode) { - case MGSL_MODE_XSYNC: - val |= BIT15 + BIT13; - break; - case MGSL_MODE_MONOSYNC: val |= BIT14 + BIT13; break; - case MGSL_MODE_BISYNC: val |= BIT15; break; - case MGSL_MODE_RAW: val |= BIT13; break; - } - - switch(info->params.encoding) - { - case HDLC_ENCODING_NRZB: val |= BIT10; break; - case HDLC_ENCODING_NRZI_MARK: val |= BIT11; break; - case HDLC_ENCODING_NRZI: val |= BIT11 + BIT10; break; - case HDLC_ENCODING_BIPHASE_MARK: val |= BIT12; break; - case HDLC_ENCODING_BIPHASE_SPACE: val |= BIT12 + BIT10; break; - case HDLC_ENCODING_BIPHASE_LEVEL: val |= BIT12 + BIT11; break; - case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: val |= BIT12 + BIT11 + BIT10; break; - } - - switch (info->params.crc_type & HDLC_CRC_MASK) - { - case HDLC_CRC_16_CCITT: val |= BIT9; break; - case HDLC_CRC_32_CCITT: val |= BIT9 + BIT8; break; - } - - if (info->params.flags & HDLC_FLAG_AUTO_DCD) - val |= BIT0; - - wr_reg16(info, RCR, val); - - /* CCR (clock control) - * - * 07..05 tx clock source - * 04..02 rx clock source - * 01 auxclk enable - * 00 BRG enable - */ - val = 0; - - if (info->params.flags & HDLC_FLAG_TXC_BRG) - { - // when RxC source is DPLL, BRG generates 16X DPLL - // reference clock, so take TxC from BRG/16 to get - // transmit clock at actual data rate - if (info->params.flags & HDLC_FLAG_RXC_DPLL) - val |= BIT6 + BIT5; /* 011, txclk = BRG/16 */ - else - val |= BIT6; /* 010, txclk = BRG */ - } - else if (info->params.flags & HDLC_FLAG_TXC_DPLL) - val |= BIT7; /* 100, txclk = DPLL Input */ - else if (info->params.flags & HDLC_FLAG_TXC_RXCPIN) - val |= BIT5; /* 001, txclk = RXC Input */ - - if (info->params.flags & HDLC_FLAG_RXC_BRG) - val |= BIT3; /* 010, rxclk = BRG */ - else if (info->params.flags & HDLC_FLAG_RXC_DPLL) - val |= BIT4; /* 100, rxclk = DPLL */ - else if (info->params.flags & HDLC_FLAG_RXC_TXCPIN) - val |= BIT2; /* 001, rxclk = TXC Input */ - - if (info->params.clock_speed) - val |= BIT1 + BIT0; - - wr_reg8(info, CCR, (unsigned char)val); - - if (info->params.flags & (HDLC_FLAG_TXC_DPLL + HDLC_FLAG_RXC_DPLL)) - { - // program DPLL mode - switch(info->params.encoding) - { - case HDLC_ENCODING_BIPHASE_MARK: - case HDLC_ENCODING_BIPHASE_SPACE: - val = BIT7; break; - case HDLC_ENCODING_BIPHASE_LEVEL: - case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: - val = BIT7 + BIT6; break; - default: val = BIT6; // NRZ encodings - } - wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | val)); - - // DPLL requires a 16X reference clock from BRG - set_rate(info, info->params.clock_speed * 16); - } - else - set_rate(info, info->params.clock_speed); - - tx_set_idle(info); - - msc_set_vcr(info); - - /* SCR (serial control) - * - * 15 1=tx req on FIFO half empty - * 14 1=rx req on FIFO half full - * 13 tx data IRQ enable - * 12 tx idle IRQ enable - * 11 underrun IRQ enable - * 10 rx data IRQ enable - * 09 rx idle IRQ enable - * 08 overrun IRQ enable - * 07 DSR IRQ enable - * 06 CTS IRQ enable - * 05 DCD IRQ enable - * 04 RI IRQ enable - * 03 reserved, must be zero - * 02 1=txd->rxd internal loopback enable - * 01 reserved, must be zero - * 00 1=master IRQ enable - */ - wr_reg16(info, SCR, BIT15 + BIT14 + BIT0); - - if (info->params.loopback) - enable_loopback(info); -} - -/* - * set transmit idle mode - */ -static void tx_set_idle(struct slgt_info *info) -{ - unsigned char val; - unsigned short tcr; - - /* if preamble enabled (tcr[6] == 1) then tx idle size = 8 bits - * else tcr[5:4] = tx idle size: 00 = 8 bits, 01 = 16 bits - */ - tcr = rd_reg16(info, TCR); - if (info->idle_mode & HDLC_TXIDLE_CUSTOM_16) { - /* disable preamble, set idle size to 16 bits */ - tcr = (tcr & ~(BIT6 + BIT5)) | BIT4; - /* MSB of 16 bit idle specified in tx preamble register (TPR) */ - wr_reg8(info, TPR, (unsigned char)((info->idle_mode >> 8) & 0xff)); - } else if (!(tcr & BIT6)) { - /* preamble is disabled, set idle size to 8 bits */ - tcr &= ~(BIT5 + BIT4); - } - wr_reg16(info, TCR, tcr); - - if (info->idle_mode & (HDLC_TXIDLE_CUSTOM_8 | HDLC_TXIDLE_CUSTOM_16)) { - /* LSB of custom tx idle specified in tx idle register */ - val = (unsigned char)(info->idle_mode & 0xff); - } else { - /* standard 8 bit idle patterns */ - switch(info->idle_mode) - { - case HDLC_TXIDLE_FLAGS: val = 0x7e; break; - case HDLC_TXIDLE_ALT_ZEROS_ONES: - case HDLC_TXIDLE_ALT_MARK_SPACE: val = 0xaa; break; - case HDLC_TXIDLE_ZEROS: - case HDLC_TXIDLE_SPACE: val = 0x00; break; - default: val = 0xff; - } - } - - wr_reg8(info, TIR, val); -} - -/* - * get state of V24 status (input) signals - */ -static void get_signals(struct slgt_info *info) -{ - unsigned short status = rd_reg16(info, SSR); - - /* clear all serial signals except DTR and RTS */ - info->signals &= SerialSignal_DTR + SerialSignal_RTS; - - if (status & BIT3) - info->signals |= SerialSignal_DSR; - if (status & BIT2) - info->signals |= SerialSignal_CTS; - if (status & BIT1) - info->signals |= SerialSignal_DCD; - if (status & BIT0) - info->signals |= SerialSignal_RI; -} - -/* - * set V.24 Control Register based on current configuration - */ -static void msc_set_vcr(struct slgt_info *info) -{ - unsigned char val = 0; - - /* VCR (V.24 control) - * - * 07..04 serial IF select - * 03 DTR - * 02 RTS - * 01 LL - * 00 RL - */ - - switch(info->if_mode & MGSL_INTERFACE_MASK) - { - case MGSL_INTERFACE_RS232: - val |= BIT5; /* 0010 */ - break; - case MGSL_INTERFACE_V35: - val |= BIT7 + BIT6 + BIT5; /* 1110 */ - break; - case MGSL_INTERFACE_RS422: - val |= BIT6; /* 0100 */ - break; - } - - if (info->if_mode & MGSL_INTERFACE_MSB_FIRST) - val |= BIT4; - if (info->signals & SerialSignal_DTR) - val |= BIT3; - if (info->signals & SerialSignal_RTS) - val |= BIT2; - if (info->if_mode & MGSL_INTERFACE_LL) - val |= BIT1; - if (info->if_mode & MGSL_INTERFACE_RL) - val |= BIT0; - wr_reg8(info, VCR, val); -} - -/* - * set state of V24 control (output) signals - */ -static void set_signals(struct slgt_info *info) -{ - unsigned char val = rd_reg8(info, VCR); - if (info->signals & SerialSignal_DTR) - val |= BIT3; - else - val &= ~BIT3; - if (info->signals & SerialSignal_RTS) - val |= BIT2; - else - val &= ~BIT2; - wr_reg8(info, VCR, val); -} - -/* - * free range of receive DMA buffers (i to last) - */ -static void free_rbufs(struct slgt_info *info, unsigned int i, unsigned int last) -{ - int done = 0; - - while(!done) { - /* reset current buffer for reuse */ - info->rbufs[i].status = 0; - set_desc_count(info->rbufs[i], info->rbuf_fill_level); - if (i == last) - done = 1; - if (++i == info->rbuf_count) - i = 0; - } - info->rbuf_current = i; -} - -/* - * mark all receive DMA buffers as free - */ -static void reset_rbufs(struct slgt_info *info) -{ - free_rbufs(info, 0, info->rbuf_count - 1); - info->rbuf_fill_index = 0; - info->rbuf_fill_count = 0; -} - -/* - * pass receive HDLC frame to upper layer - * - * return true if frame available, otherwise false - */ -static bool rx_get_frame(struct slgt_info *info) -{ - unsigned int start, end; - unsigned short status; - unsigned int framesize = 0; - unsigned long flags; - struct tty_struct *tty = info->port.tty; - unsigned char addr_field = 0xff; - unsigned int crc_size = 0; - - switch (info->params.crc_type & HDLC_CRC_MASK) { - case HDLC_CRC_16_CCITT: crc_size = 2; break; - case HDLC_CRC_32_CCITT: crc_size = 4; break; - } - -check_again: - - framesize = 0; - addr_field = 0xff; - start = end = info->rbuf_current; - - for (;;) { - if (!desc_complete(info->rbufs[end])) - goto cleanup; - - if (framesize == 0 && info->params.addr_filter != 0xff) - addr_field = info->rbufs[end].buf[0]; - - framesize += desc_count(info->rbufs[end]); - - if (desc_eof(info->rbufs[end])) - break; - - if (++end == info->rbuf_count) - end = 0; - - if (end == info->rbuf_current) { - if (info->rx_enabled){ - spin_lock_irqsave(&info->lock,flags); - rx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - } - goto cleanup; - } - } - - /* status - * - * 15 buffer complete - * 14..06 reserved - * 05..04 residue - * 02 eof (end of frame) - * 01 CRC error - * 00 abort - */ - status = desc_status(info->rbufs[end]); - - /* ignore CRC bit if not using CRC (bit is undefined) */ - if ((info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_NONE) - status &= ~BIT1; - - if (framesize == 0 || - (addr_field != 0xff && addr_field != info->params.addr_filter)) { - free_rbufs(info, start, end); - goto check_again; - } - - if (framesize < (2 + crc_size) || status & BIT0) { - info->icount.rxshort++; - framesize = 0; - } else if (status & BIT1) { - info->icount.rxcrc++; - if (!(info->params.crc_type & HDLC_CRC_RETURN_EX)) - framesize = 0; - } - -#if SYNCLINK_GENERIC_HDLC - if (framesize == 0) { - info->netdev->stats.rx_errors++; - info->netdev->stats.rx_frame_errors++; - } -#endif - - DBGBH(("%s rx frame status=%04X size=%d\n", - info->device_name, status, framesize)); - DBGDATA(info, info->rbufs[start].buf, min_t(int, framesize, info->rbuf_fill_level), "rx"); - - if (framesize) { - if (!(info->params.crc_type & HDLC_CRC_RETURN_EX)) { - framesize -= crc_size; - crc_size = 0; - } - - if (framesize > info->max_frame_size + crc_size) - info->icount.rxlong++; - else { - /* copy dma buffer(s) to contiguous temp buffer */ - int copy_count = framesize; - int i = start; - unsigned char *p = info->tmp_rbuf; - info->tmp_rbuf_count = framesize; - - info->icount.rxok++; - - while(copy_count) { - int partial_count = min_t(int, copy_count, info->rbuf_fill_level); - memcpy(p, info->rbufs[i].buf, partial_count); - p += partial_count; - copy_count -= partial_count; - if (++i == info->rbuf_count) - i = 0; - } - - if (info->params.crc_type & HDLC_CRC_RETURN_EX) { - *p = (status & BIT1) ? RX_CRC_ERROR : RX_OK; - framesize++; - } - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_rx(info,info->tmp_rbuf, framesize); - else -#endif - ldisc_receive_buf(tty, info->tmp_rbuf, info->flag_buf, framesize); - } - } - free_rbufs(info, start, end); - return true; - -cleanup: - return false; -} - -/* - * pass receive buffer (RAW synchronous mode) to tty layer - * return true if buffer available, otherwise false - */ -static bool rx_get_buf(struct slgt_info *info) -{ - unsigned int i = info->rbuf_current; - unsigned int count; - - if (!desc_complete(info->rbufs[i])) - return false; - count = desc_count(info->rbufs[i]); - switch(info->params.mode) { - case MGSL_MODE_MONOSYNC: - case MGSL_MODE_BISYNC: - case MGSL_MODE_XSYNC: - /* ignore residue in byte synchronous modes */ - if (desc_residue(info->rbufs[i])) - count--; - break; - } - DBGDATA(info, info->rbufs[i].buf, count, "rx"); - DBGINFO(("rx_get_buf size=%d\n", count)); - if (count) - ldisc_receive_buf(info->port.tty, info->rbufs[i].buf, - info->flag_buf, count); - free_rbufs(info, i, i); - return true; -} - -static void reset_tbufs(struct slgt_info *info) -{ - unsigned int i; - info->tbuf_current = 0; - for (i=0 ; i < info->tbuf_count ; i++) { - info->tbufs[i].status = 0; - info->tbufs[i].count = 0; - } -} - -/* - * return number of free transmit DMA buffers - */ -static unsigned int free_tbuf_count(struct slgt_info *info) -{ - unsigned int count = 0; - unsigned int i = info->tbuf_current; - - do - { - if (desc_count(info->tbufs[i])) - break; /* buffer in use */ - ++count; - if (++i == info->tbuf_count) - i=0; - } while (i != info->tbuf_current); - - /* if tx DMA active, last zero count buffer is in use */ - if (count && (rd_reg32(info, TDCSR) & BIT0)) - --count; - - return count; -} - -/* - * return number of bytes in unsent transmit DMA buffers - * and the serial controller tx FIFO - */ -static unsigned int tbuf_bytes(struct slgt_info *info) -{ - unsigned int total_count = 0; - unsigned int i = info->tbuf_current; - unsigned int reg_value; - unsigned int count; - unsigned int active_buf_count = 0; - - /* - * Add descriptor counts for all tx DMA buffers. - * If count is zero (cleared by DMA controller after read), - * the buffer is complete or is actively being read from. - * - * Record buf_count of last buffer with zero count starting - * from current ring position. buf_count is mirror - * copy of count and is not cleared by serial controller. - * If DMA controller is active, that buffer is actively - * being read so add to total. - */ - do { - count = desc_count(info->tbufs[i]); - if (count) - total_count += count; - else if (!total_count) - active_buf_count = info->tbufs[i].buf_count; - if (++i == info->tbuf_count) - i = 0; - } while (i != info->tbuf_current); - - /* read tx DMA status register */ - reg_value = rd_reg32(info, TDCSR); - - /* if tx DMA active, last zero count buffer is in use */ - if (reg_value & BIT0) - total_count += active_buf_count; - - /* add tx FIFO count = reg_value[15..8] */ - total_count += (reg_value >> 8) & 0xff; - - /* if transmitter active add one byte for shift register */ - if (info->tx_active) - total_count++; - - return total_count; -} - -/* - * load data into transmit DMA buffer ring and start transmitter if needed - * return true if data accepted, otherwise false (buffers full) - */ -static bool tx_load(struct slgt_info *info, const char *buf, unsigned int size) -{ - unsigned short count; - unsigned int i; - struct slgt_desc *d; - - /* check required buffer space */ - if (DIV_ROUND_UP(size, DMABUFSIZE) > free_tbuf_count(info)) - return false; - - DBGDATA(info, buf, size, "tx"); - - /* - * copy data to one or more DMA buffers in circular ring - * tbuf_start = first buffer for this data - * tbuf_current = next free buffer - * - * Copy all data before making data visible to DMA controller by - * setting descriptor count of the first buffer. - * This prevents an active DMA controller from reading the first DMA - * buffers of a frame and stopping before the final buffers are filled. - */ - - info->tbuf_start = i = info->tbuf_current; - - while (size) { - d = &info->tbufs[i]; - - count = (unsigned short)((size > DMABUFSIZE) ? DMABUFSIZE : size); - memcpy(d->buf, buf, count); - - size -= count; - buf += count; - - /* - * set EOF bit for last buffer of HDLC frame or - * for every buffer in raw mode - */ - if ((!size && info->params.mode == MGSL_MODE_HDLC) || - info->params.mode == MGSL_MODE_RAW) - set_desc_eof(*d, 1); - else - set_desc_eof(*d, 0); - - /* set descriptor count for all but first buffer */ - if (i != info->tbuf_start) - set_desc_count(*d, count); - d->buf_count = count; - - if (++i == info->tbuf_count) - i = 0; - } - - info->tbuf_current = i; - - /* set first buffer count to make new data visible to DMA controller */ - d = &info->tbufs[info->tbuf_start]; - set_desc_count(*d, d->buf_count); - - /* start transmitter if needed and update transmit timeout */ - if (!info->tx_active) - tx_start(info); - update_tx_timer(info); - - return true; -} - -static int register_test(struct slgt_info *info) -{ - static unsigned short patterns[] = - {0x0000, 0xffff, 0xaaaa, 0x5555, 0x6969, 0x9696}; - static unsigned int count = ARRAY_SIZE(patterns); - unsigned int i; - int rc = 0; - - for (i=0 ; i < count ; i++) { - wr_reg16(info, TIR, patterns[i]); - wr_reg16(info, BDR, patterns[(i+1)%count]); - if ((rd_reg16(info, TIR) != patterns[i]) || - (rd_reg16(info, BDR) != patterns[(i+1)%count])) { - rc = -ENODEV; - break; - } - } - info->gpio_present = (rd_reg32(info, JCR) & BIT5) ? 1 : 0; - info->init_error = rc ? 0 : DiagStatus_AddressFailure; - return rc; -} - -static int irq_test(struct slgt_info *info) -{ - unsigned long timeout; - unsigned long flags; - struct tty_struct *oldtty = info->port.tty; - u32 speed = info->params.data_rate; - - info->params.data_rate = 921600; - info->port.tty = NULL; - - spin_lock_irqsave(&info->lock, flags); - async_mode(info); - slgt_irq_on(info, IRQ_TXIDLE); - - /* enable transmitter */ - wr_reg16(info, TCR, - (unsigned short)(rd_reg16(info, TCR) | BIT1)); - - /* write one byte and wait for tx idle */ - wr_reg16(info, TDR, 0); - - /* assume failure */ - info->init_error = DiagStatus_IrqFailure; - info->irq_occurred = false; - - spin_unlock_irqrestore(&info->lock, flags); - - timeout=100; - while(timeout-- && !info->irq_occurred) - msleep_interruptible(10); - - spin_lock_irqsave(&info->lock,flags); - reset_port(info); - spin_unlock_irqrestore(&info->lock,flags); - - info->params.data_rate = speed; - info->port.tty = oldtty; - - info->init_error = info->irq_occurred ? 0 : DiagStatus_IrqFailure; - return info->irq_occurred ? 0 : -ENODEV; -} - -static int loopback_test_rx(struct slgt_info *info) -{ - unsigned char *src, *dest; - int count; - - if (desc_complete(info->rbufs[0])) { - count = desc_count(info->rbufs[0]); - src = info->rbufs[0].buf; - dest = info->tmp_rbuf; - - for( ; count ; count-=2, src+=2) { - /* src=data byte (src+1)=status byte */ - if (!(*(src+1) & (BIT9 + BIT8))) { - *dest = *src; - dest++; - info->tmp_rbuf_count++; - } - } - DBGDATA(info, info->tmp_rbuf, info->tmp_rbuf_count, "rx"); - return 1; - } - return 0; -} - -static int loopback_test(struct slgt_info *info) -{ -#define TESTFRAMESIZE 20 - - unsigned long timeout; - u16 count = TESTFRAMESIZE; - unsigned char buf[TESTFRAMESIZE]; - int rc = -ENODEV; - unsigned long flags; - - struct tty_struct *oldtty = info->port.tty; - MGSL_PARAMS params; - - memcpy(¶ms, &info->params, sizeof(params)); - - info->params.mode = MGSL_MODE_ASYNC; - info->params.data_rate = 921600; - info->params.loopback = 1; - info->port.tty = NULL; - - /* build and send transmit frame */ - for (count = 0; count < TESTFRAMESIZE; ++count) - buf[count] = (unsigned char)count; - - info->tmp_rbuf_count = 0; - memset(info->tmp_rbuf, 0, TESTFRAMESIZE); - - /* program hardware for HDLC and enabled receiver */ - spin_lock_irqsave(&info->lock,flags); - async_mode(info); - rx_start(info); - tx_load(info, buf, count); - spin_unlock_irqrestore(&info->lock, flags); - - /* wait for receive complete */ - for (timeout = 100; timeout; --timeout) { - msleep_interruptible(10); - if (loopback_test_rx(info)) { - rc = 0; - break; - } - } - - /* verify received frame length and contents */ - if (!rc && (info->tmp_rbuf_count != count || - memcmp(buf, info->tmp_rbuf, count))) { - rc = -ENODEV; - } - - spin_lock_irqsave(&info->lock,flags); - reset_adapter(info); - spin_unlock_irqrestore(&info->lock,flags); - - memcpy(&info->params, ¶ms, sizeof(info->params)); - info->port.tty = oldtty; - - info->init_error = rc ? DiagStatus_DmaFailure : 0; - return rc; -} - -static int adapter_test(struct slgt_info *info) -{ - DBGINFO(("testing %s\n", info->device_name)); - if (register_test(info) < 0) { - printk("register test failure %s addr=%08X\n", - info->device_name, info->phys_reg_addr); - } else if (irq_test(info) < 0) { - printk("IRQ test failure %s IRQ=%d\n", - info->device_name, info->irq_level); - } else if (loopback_test(info) < 0) { - printk("loopback test failure %s\n", info->device_name); - } - return info->init_error; -} - -/* - * transmit timeout handler - */ -static void tx_timeout(unsigned long context) -{ - struct slgt_info *info = (struct slgt_info*)context; - unsigned long flags; - - DBGINFO(("%s tx_timeout\n", info->device_name)); - if(info->tx_active && info->params.mode == MGSL_MODE_HDLC) { - info->icount.txtimeout++; - } - spin_lock_irqsave(&info->lock,flags); - tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_tx_done(info); - else -#endif - bh_transmit(info); -} - -/* - * receive buffer polling timer - */ -static void rx_timeout(unsigned long context) -{ - struct slgt_info *info = (struct slgt_info*)context; - unsigned long flags; - - DBGINFO(("%s rx_timeout\n", info->device_name)); - spin_lock_irqsave(&info->lock, flags); - info->pending_bh |= BH_RECEIVE; - spin_unlock_irqrestore(&info->lock, flags); - bh_handler(&info->task); -} - diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c deleted file mode 100644 index 327343694473..000000000000 --- a/drivers/char/synclinkmp.c +++ /dev/null @@ -1,5600 +0,0 @@ -/* - * $Id: synclinkmp.c,v 4.38 2005/07/15 13:29:44 paulkf Exp $ - * - * Device driver for Microgate SyncLink Multiport - * high speed multiprotocol serial adapter. - * - * written by Paul Fulghum for Microgate Corporation - * paulkf@microgate.com - * - * Microgate and SyncLink are trademarks of Microgate Corporation - * - * Derived from serial.c written by Theodore Ts'o and Linus Torvalds - * This code is released under the GNU General Public License (GPL) - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#define VERSION(ver,rel,seq) (((ver)<<16) | ((rel)<<8) | (seq)) -#if defined(__i386__) -# define BREAKPOINT() asm(" int $3"); -#else -# define BREAKPOINT() { } -#endif - -#define MAX_DEVICES 12 - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINKMP_MODULE)) -#define SYNCLINK_GENERIC_HDLC 1 -#else -#define SYNCLINK_GENERIC_HDLC 0 -#endif - -#define GET_USER(error,value,addr) error = get_user(value,addr) -#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0 -#define PUT_USER(error,value,addr) error = put_user(value,addr) -#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0 - -#include - -static MGSL_PARAMS default_params = { - MGSL_MODE_HDLC, /* unsigned long mode */ - 0, /* unsigned char loopback; */ - HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */ - HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */ - 0, /* unsigned long clock_speed; */ - 0xff, /* unsigned char addr_filter; */ - HDLC_CRC_16_CCITT, /* unsigned short crc_type; */ - HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */ - HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */ - 9600, /* unsigned long data_rate; */ - 8, /* unsigned char data_bits; */ - 1, /* unsigned char stop_bits; */ - ASYNC_PARITY_NONE /* unsigned char parity; */ -}; - -/* size in bytes of DMA data buffers */ -#define SCABUFSIZE 1024 -#define SCA_MEM_SIZE 0x40000 -#define SCA_BASE_SIZE 512 -#define SCA_REG_SIZE 16 -#define SCA_MAX_PORTS 4 -#define SCAMAXDESC 128 - -#define BUFFERLISTSIZE 4096 - -/* SCA-I style DMA buffer descriptor */ -typedef struct _SCADESC -{ - u16 next; /* lower l6 bits of next descriptor addr */ - u16 buf_ptr; /* lower 16 bits of buffer addr */ - u8 buf_base; /* upper 8 bits of buffer addr */ - u8 pad1; - u16 length; /* length of buffer */ - u8 status; /* status of buffer */ - u8 pad2; -} SCADESC, *PSCADESC; - -typedef struct _SCADESC_EX -{ - /* device driver bookkeeping section */ - char *virt_addr; /* virtual address of data buffer */ - u16 phys_entry; /* lower 16-bits of physical address of this descriptor */ -} SCADESC_EX, *PSCADESC_EX; - -/* The queue of BH actions to be performed */ - -#define BH_RECEIVE 1 -#define BH_TRANSMIT 2 -#define BH_STATUS 4 - -#define IO_PIN_SHUTDOWN_LIMIT 100 - -struct _input_signal_events { - int ri_up; - int ri_down; - int dsr_up; - int dsr_down; - int dcd_up; - int dcd_down; - int cts_up; - int cts_down; -}; - -/* - * Device instance data structure - */ -typedef struct _synclinkmp_info { - void *if_ptr; /* General purpose pointer (used by SPPP) */ - int magic; - struct tty_port port; - int line; - unsigned short close_delay; - unsigned short closing_wait; /* time to wait before closing */ - - struct mgsl_icount icount; - - int timeout; - int x_char; /* xon/xoff character */ - u16 read_status_mask1; /* break detection (SR1 indications) */ - u16 read_status_mask2; /* parity/framing/overun (SR2 indications) */ - unsigned char ignore_status_mask1; /* break detection (SR1 indications) */ - unsigned char ignore_status_mask2; /* parity/framing/overun (SR2 indications) */ - unsigned char *tx_buf; - int tx_put; - int tx_get; - int tx_count; - - wait_queue_head_t status_event_wait_q; - wait_queue_head_t event_wait_q; - struct timer_list tx_timer; /* HDLC transmit timeout timer */ - struct _synclinkmp_info *next_device; /* device list link */ - struct timer_list status_timer; /* input signal status check timer */ - - spinlock_t lock; /* spinlock for synchronizing with ISR */ - struct work_struct task; /* task structure for scheduling bh */ - - u32 max_frame_size; /* as set by device config */ - - u32 pending_bh; - - bool bh_running; /* Protection from multiple */ - int isr_overflow; - bool bh_requested; - - int dcd_chkcount; /* check counts to prevent */ - int cts_chkcount; /* too many IRQs if a signal */ - int dsr_chkcount; /* is floating */ - int ri_chkcount; - - char *buffer_list; /* virtual address of Rx & Tx buffer lists */ - unsigned long buffer_list_phys; - - unsigned int rx_buf_count; /* count of total allocated Rx buffers */ - SCADESC *rx_buf_list; /* list of receive buffer entries */ - SCADESC_EX rx_buf_list_ex[SCAMAXDESC]; /* list of receive buffer entries */ - unsigned int current_rx_buf; - - unsigned int tx_buf_count; /* count of total allocated Tx buffers */ - SCADESC *tx_buf_list; /* list of transmit buffer entries */ - SCADESC_EX tx_buf_list_ex[SCAMAXDESC]; /* list of transmit buffer entries */ - unsigned int last_tx_buf; - - unsigned char *tmp_rx_buf; - unsigned int tmp_rx_buf_count; - - bool rx_enabled; - bool rx_overflow; - - bool tx_enabled; - bool tx_active; - u32 idle_mode; - - unsigned char ie0_value; - unsigned char ie1_value; - unsigned char ie2_value; - unsigned char ctrlreg_value; - unsigned char old_signals; - - char device_name[25]; /* device instance name */ - - int port_count; - int adapter_num; - int port_num; - - struct _synclinkmp_info *port_array[SCA_MAX_PORTS]; - - unsigned int bus_type; /* expansion bus type (ISA,EISA,PCI) */ - - unsigned int irq_level; /* interrupt level */ - unsigned long irq_flags; - bool irq_requested; /* true if IRQ requested */ - - MGSL_PARAMS params; /* communications parameters */ - - unsigned char serial_signals; /* current serial signal states */ - - bool irq_occurred; /* for diagnostics use */ - unsigned int init_error; /* Initialization startup error */ - - u32 last_mem_alloc; - unsigned char* memory_base; /* shared memory address (PCI only) */ - u32 phys_memory_base; - int shared_mem_requested; - - unsigned char* sca_base; /* HD64570 SCA Memory address */ - u32 phys_sca_base; - u32 sca_offset; - bool sca_base_requested; - - unsigned char* lcr_base; /* local config registers (PCI only) */ - u32 phys_lcr_base; - u32 lcr_offset; - int lcr_mem_requested; - - unsigned char* statctrl_base; /* status/control register memory */ - u32 phys_statctrl_base; - u32 statctrl_offset; - bool sca_statctrl_requested; - - u32 misc_ctrl_value; - char flag_buf[MAX_ASYNC_BUFFER_SIZE]; - char char_buf[MAX_ASYNC_BUFFER_SIZE]; - bool drop_rts_on_tx_done; - - struct _input_signal_events input_signal_events; - - /* SPPP/Cisco HDLC device parts */ - int netcount; - spinlock_t netlock; - -#if SYNCLINK_GENERIC_HDLC - struct net_device *netdev; -#endif - -} SLMP_INFO; - -#define MGSL_MAGIC 0x5401 - -/* - * define serial signal status change macros - */ -#define MISCSTATUS_DCD_LATCHED (SerialSignal_DCD<<8) /* indicates change in DCD */ -#define MISCSTATUS_RI_LATCHED (SerialSignal_RI<<8) /* indicates change in RI */ -#define MISCSTATUS_CTS_LATCHED (SerialSignal_CTS<<8) /* indicates change in CTS */ -#define MISCSTATUS_DSR_LATCHED (SerialSignal_DSR<<8) /* change in DSR */ - -/* Common Register macros */ -#define LPR 0x00 -#define PABR0 0x02 -#define PABR1 0x03 -#define WCRL 0x04 -#define WCRM 0x05 -#define WCRH 0x06 -#define DPCR 0x08 -#define DMER 0x09 -#define ISR0 0x10 -#define ISR1 0x11 -#define ISR2 0x12 -#define IER0 0x14 -#define IER1 0x15 -#define IER2 0x16 -#define ITCR 0x18 -#define INTVR 0x1a -#define IMVR 0x1c - -/* MSCI Register macros */ -#define TRB 0x20 -#define TRBL 0x20 -#define TRBH 0x21 -#define SR0 0x22 -#define SR1 0x23 -#define SR2 0x24 -#define SR3 0x25 -#define FST 0x26 -#define IE0 0x28 -#define IE1 0x29 -#define IE2 0x2a -#define FIE 0x2b -#define CMD 0x2c -#define MD0 0x2e -#define MD1 0x2f -#define MD2 0x30 -#define CTL 0x31 -#define SA0 0x32 -#define SA1 0x33 -#define IDL 0x34 -#define TMC 0x35 -#define RXS 0x36 -#define TXS 0x37 -#define TRC0 0x38 -#define TRC1 0x39 -#define RRC 0x3a -#define CST0 0x3c -#define CST1 0x3d - -/* Timer Register Macros */ -#define TCNT 0x60 -#define TCNTL 0x60 -#define TCNTH 0x61 -#define TCONR 0x62 -#define TCONRL 0x62 -#define TCONRH 0x63 -#define TMCS 0x64 -#define TEPR 0x65 - -/* DMA Controller Register macros */ -#define DARL 0x80 -#define DARH 0x81 -#define DARB 0x82 -#define BAR 0x80 -#define BARL 0x80 -#define BARH 0x81 -#define BARB 0x82 -#define SAR 0x84 -#define SARL 0x84 -#define SARH 0x85 -#define SARB 0x86 -#define CPB 0x86 -#define CDA 0x88 -#define CDAL 0x88 -#define CDAH 0x89 -#define EDA 0x8a -#define EDAL 0x8a -#define EDAH 0x8b -#define BFL 0x8c -#define BFLL 0x8c -#define BFLH 0x8d -#define BCR 0x8e -#define BCRL 0x8e -#define BCRH 0x8f -#define DSR 0x90 -#define DMR 0x91 -#define FCT 0x93 -#define DIR 0x94 -#define DCMD 0x95 - -/* combine with timer or DMA register address */ -#define TIMER0 0x00 -#define TIMER1 0x08 -#define TIMER2 0x10 -#define TIMER3 0x18 -#define RXDMA 0x00 -#define TXDMA 0x20 - -/* SCA Command Codes */ -#define NOOP 0x00 -#define TXRESET 0x01 -#define TXENABLE 0x02 -#define TXDISABLE 0x03 -#define TXCRCINIT 0x04 -#define TXCRCEXCL 0x05 -#define TXEOM 0x06 -#define TXABORT 0x07 -#define MPON 0x08 -#define TXBUFCLR 0x09 -#define RXRESET 0x11 -#define RXENABLE 0x12 -#define RXDISABLE 0x13 -#define RXCRCINIT 0x14 -#define RXREJECT 0x15 -#define SEARCHMP 0x16 -#define RXCRCEXCL 0x17 -#define RXCRCCALC 0x18 -#define CHRESET 0x21 -#define HUNT 0x31 - -/* DMA command codes */ -#define SWABORT 0x01 -#define FEICLEAR 0x02 - -/* IE0 */ -#define TXINTE BIT7 -#define RXINTE BIT6 -#define TXRDYE BIT1 -#define RXRDYE BIT0 - -/* IE1 & SR1 */ -#define UDRN BIT7 -#define IDLE BIT6 -#define SYNCD BIT4 -#define FLGD BIT4 -#define CCTS BIT3 -#define CDCD BIT2 -#define BRKD BIT1 -#define ABTD BIT1 -#define GAPD BIT1 -#define BRKE BIT0 -#define IDLD BIT0 - -/* IE2 & SR2 */ -#define EOM BIT7 -#define PMP BIT6 -#define SHRT BIT6 -#define PE BIT5 -#define ABT BIT5 -#define FRME BIT4 -#define RBIT BIT4 -#define OVRN BIT3 -#define CRCE BIT2 - - -/* - * Global linked list of SyncLink devices - */ -static SLMP_INFO *synclinkmp_device_list = NULL; -static int synclinkmp_adapter_count = -1; -static int synclinkmp_device_count = 0; - -/* - * Set this param to non-zero to load eax with the - * .text section address and breakpoint on module load. - * This is useful for use with gdb and add-symbol-file command. - */ -static int break_on_load = 0; - -/* - * Driver major number, defaults to zero to get auto - * assigned major number. May be forced as module parameter. - */ -static int ttymajor = 0; - -/* - * Array of user specified options for ISA adapters. - */ -static int debug_level = 0; -static int maxframe[MAX_DEVICES] = {0,}; - -module_param(break_on_load, bool, 0); -module_param(ttymajor, int, 0); -module_param(debug_level, int, 0); -module_param_array(maxframe, int, NULL, 0); - -static char *driver_name = "SyncLink MultiPort driver"; -static char *driver_version = "$Revision: 4.38 $"; - -static int synclinkmp_init_one(struct pci_dev *dev,const struct pci_device_id *ent); -static void synclinkmp_remove_one(struct pci_dev *dev); - -static struct pci_device_id synclinkmp_pci_tbl[] = { - { PCI_VENDOR_ID_MICROGATE, PCI_DEVICE_ID_MICROGATE_SCA, PCI_ANY_ID, PCI_ANY_ID, }, - { 0, }, /* terminate list */ -}; -MODULE_DEVICE_TABLE(pci, synclinkmp_pci_tbl); - -MODULE_LICENSE("GPL"); - -static struct pci_driver synclinkmp_pci_driver = { - .name = "synclinkmp", - .id_table = synclinkmp_pci_tbl, - .probe = synclinkmp_init_one, - .remove = __devexit_p(synclinkmp_remove_one), -}; - - -static struct tty_driver *serial_driver; - -/* number of characters left in xmit buffer before we ask for more */ -#define WAKEUP_CHARS 256 - - -/* tty callbacks */ - -static int open(struct tty_struct *tty, struct file * filp); -static void close(struct tty_struct *tty, struct file * filp); -static void hangup(struct tty_struct *tty); -static void set_termios(struct tty_struct *tty, struct ktermios *old_termios); - -static int write(struct tty_struct *tty, const unsigned char *buf, int count); -static int put_char(struct tty_struct *tty, unsigned char ch); -static void send_xchar(struct tty_struct *tty, char ch); -static void wait_until_sent(struct tty_struct *tty, int timeout); -static int write_room(struct tty_struct *tty); -static void flush_chars(struct tty_struct *tty); -static void flush_buffer(struct tty_struct *tty); -static void tx_hold(struct tty_struct *tty); -static void tx_release(struct tty_struct *tty); - -static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); -static int chars_in_buffer(struct tty_struct *tty); -static void throttle(struct tty_struct * tty); -static void unthrottle(struct tty_struct * tty); -static int set_break(struct tty_struct *tty, int break_state); - -#if SYNCLINK_GENERIC_HDLC -#define dev_to_port(D) (dev_to_hdlc(D)->priv) -static void hdlcdev_tx_done(SLMP_INFO *info); -static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size); -static int hdlcdev_init(SLMP_INFO *info); -static void hdlcdev_exit(SLMP_INFO *info); -#endif - -/* ioctl handlers */ - -static int get_stats(SLMP_INFO *info, struct mgsl_icount __user *user_icount); -static int get_params(SLMP_INFO *info, MGSL_PARAMS __user *params); -static int set_params(SLMP_INFO *info, MGSL_PARAMS __user *params); -static int get_txidle(SLMP_INFO *info, int __user *idle_mode); -static int set_txidle(SLMP_INFO *info, int idle_mode); -static int tx_enable(SLMP_INFO *info, int enable); -static int tx_abort(SLMP_INFO *info); -static int rx_enable(SLMP_INFO *info, int enable); -static int modem_input_wait(SLMP_INFO *info,int arg); -static int wait_mgsl_event(SLMP_INFO *info, int __user *mask_ptr); -static int tiocmget(struct tty_struct *tty); -static int tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear); -static int set_break(struct tty_struct *tty, int break_state); - -static void add_device(SLMP_INFO *info); -static void device_init(int adapter_num, struct pci_dev *pdev); -static int claim_resources(SLMP_INFO *info); -static void release_resources(SLMP_INFO *info); - -static int startup(SLMP_INFO *info); -static int block_til_ready(struct tty_struct *tty, struct file * filp,SLMP_INFO *info); -static int carrier_raised(struct tty_port *port); -static void shutdown(SLMP_INFO *info); -static void program_hw(SLMP_INFO *info); -static void change_params(SLMP_INFO *info); - -static bool init_adapter(SLMP_INFO *info); -static bool register_test(SLMP_INFO *info); -static bool irq_test(SLMP_INFO *info); -static bool loopback_test(SLMP_INFO *info); -static int adapter_test(SLMP_INFO *info); -static bool memory_test(SLMP_INFO *info); - -static void reset_adapter(SLMP_INFO *info); -static void reset_port(SLMP_INFO *info); -static void async_mode(SLMP_INFO *info); -static void hdlc_mode(SLMP_INFO *info); - -static void rx_stop(SLMP_INFO *info); -static void rx_start(SLMP_INFO *info); -static void rx_reset_buffers(SLMP_INFO *info); -static void rx_free_frame_buffers(SLMP_INFO *info, unsigned int first, unsigned int last); -static bool rx_get_frame(SLMP_INFO *info); - -static void tx_start(SLMP_INFO *info); -static void tx_stop(SLMP_INFO *info); -static void tx_load_fifo(SLMP_INFO *info); -static void tx_set_idle(SLMP_INFO *info); -static void tx_load_dma_buffer(SLMP_INFO *info, const char *buf, unsigned int count); - -static void get_signals(SLMP_INFO *info); -static void set_signals(SLMP_INFO *info); -static void enable_loopback(SLMP_INFO *info, int enable); -static void set_rate(SLMP_INFO *info, u32 data_rate); - -static int bh_action(SLMP_INFO *info); -static void bh_handler(struct work_struct *work); -static void bh_receive(SLMP_INFO *info); -static void bh_transmit(SLMP_INFO *info); -static void bh_status(SLMP_INFO *info); -static void isr_timer(SLMP_INFO *info); -static void isr_rxint(SLMP_INFO *info); -static void isr_rxrdy(SLMP_INFO *info); -static void isr_txint(SLMP_INFO *info); -static void isr_txrdy(SLMP_INFO *info); -static void isr_rxdmaok(SLMP_INFO *info); -static void isr_rxdmaerror(SLMP_INFO *info); -static void isr_txdmaok(SLMP_INFO *info); -static void isr_txdmaerror(SLMP_INFO *info); -static void isr_io_pin(SLMP_INFO *info, u16 status); - -static int alloc_dma_bufs(SLMP_INFO *info); -static void free_dma_bufs(SLMP_INFO *info); -static int alloc_buf_list(SLMP_INFO *info); -static int alloc_frame_bufs(SLMP_INFO *info, SCADESC *list, SCADESC_EX *list_ex,int count); -static int alloc_tmp_rx_buf(SLMP_INFO *info); -static void free_tmp_rx_buf(SLMP_INFO *info); - -static void load_pci_memory(SLMP_INFO *info, char* dest, const char* src, unsigned short count); -static void trace_block(SLMP_INFO *info, const char* data, int count, int xmit); -static void tx_timeout(unsigned long context); -static void status_timeout(unsigned long context); - -static unsigned char read_reg(SLMP_INFO *info, unsigned char addr); -static void write_reg(SLMP_INFO *info, unsigned char addr, unsigned char val); -static u16 read_reg16(SLMP_INFO *info, unsigned char addr); -static void write_reg16(SLMP_INFO *info, unsigned char addr, u16 val); -static unsigned char read_status_reg(SLMP_INFO * info); -static void write_control_reg(SLMP_INFO * info); - - -static unsigned char rx_active_fifo_level = 16; // rx request FIFO activation level in bytes -static unsigned char tx_active_fifo_level = 16; // tx request FIFO activation level in bytes -static unsigned char tx_negate_fifo_level = 32; // tx request FIFO negation level in bytes - -static u32 misc_ctrl_value = 0x007e4040; -static u32 lcr1_brdr_value = 0x00800028; - -static u32 read_ahead_count = 8; - -/* DPCR, DMA Priority Control - * - * 07..05 Not used, must be 0 - * 04 BRC, bus release condition: 0=all transfers complete - * 1=release after 1 xfer on all channels - * 03 CCC, channel change condition: 0=every cycle - * 1=after each channel completes all xfers - * 02..00 PR<2..0>, priority 100=round robin - * - * 00000100 = 0x00 - */ -static unsigned char dma_priority = 0x04; - -// Number of bytes that can be written to shared RAM -// in a single write operation -static u32 sca_pci_load_interval = 64; - -/* - * 1st function defined in .text section. Calling this function in - * init_module() followed by a breakpoint allows a remote debugger - * (gdb) to get the .text address for the add-symbol-file command. - * This allows remote debugging of dynamically loadable modules. - */ -static void* synclinkmp_get_text_ptr(void); -static void* synclinkmp_get_text_ptr(void) {return synclinkmp_get_text_ptr;} - -static inline int sanity_check(SLMP_INFO *info, - char *name, const char *routine) -{ -#ifdef SANITY_CHECK - static const char *badmagic = - "Warning: bad magic number for synclinkmp_struct (%s) in %s\n"; - static const char *badinfo = - "Warning: null synclinkmp_struct for (%s) in %s\n"; - - if (!info) { - printk(badinfo, name, routine); - return 1; - } - if (info->magic != MGSL_MAGIC) { - printk(badmagic, name, routine); - return 1; - } -#else - if (!info) - return 1; -#endif - return 0; -} - -/** - * line discipline callback wrappers - * - * The wrappers maintain line discipline references - * while calling into the line discipline. - * - * ldisc_receive_buf - pass receive data to line discipline - */ - -static void ldisc_receive_buf(struct tty_struct *tty, - const __u8 *data, char *flags, int count) -{ - struct tty_ldisc *ld; - if (!tty) - return; - ld = tty_ldisc_ref(tty); - if (ld) { - if (ld->ops->receive_buf) - ld->ops->receive_buf(tty, data, flags, count); - tty_ldisc_deref(ld); - } -} - -/* tty callbacks */ - -/* Called when a port is opened. Init and enable port. - */ -static int open(struct tty_struct *tty, struct file *filp) -{ - SLMP_INFO *info; - int retval, line; - unsigned long flags; - - line = tty->index; - if ((line < 0) || (line >= synclinkmp_device_count)) { - printk("%s(%d): open with invalid line #%d.\n", - __FILE__,__LINE__,line); - return -ENODEV; - } - - info = synclinkmp_device_list; - while(info && info->line != line) - info = info->next_device; - if (sanity_check(info, tty->name, "open")) - return -ENODEV; - if ( info->init_error ) { - printk("%s(%d):%s device is not allocated, init error=%d\n", - __FILE__,__LINE__,info->device_name,info->init_error); - return -ENODEV; - } - - tty->driver_data = info; - info->port.tty = tty; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s open(), old ref count = %d\n", - __FILE__,__LINE__,tty->driver->name, info->port.count); - - /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ - if (info->port.flags & ASYNC_CLOSING) - interruptible_sleep_on(&info->port.close_wait); - retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS); - goto cleanup; - } - - info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0; - - spin_lock_irqsave(&info->netlock, flags); - if (info->netcount) { - retval = -EBUSY; - spin_unlock_irqrestore(&info->netlock, flags); - goto cleanup; - } - info->port.count++; - spin_unlock_irqrestore(&info->netlock, flags); - - if (info->port.count == 1) { - /* 1st open on this device, init hardware */ - retval = startup(info); - if (retval < 0) - goto cleanup; - } - - retval = block_til_ready(tty, filp, info); - if (retval) { - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready() returned %d\n", - __FILE__,__LINE__, info->device_name, retval); - goto cleanup; - } - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s open() success\n", - __FILE__,__LINE__, info->device_name); - retval = 0; - -cleanup: - if (retval) { - if (tty->count == 1) - info->port.tty = NULL; /* tty layer will release tty struct */ - if(info->port.count) - info->port.count--; - } - - return retval; -} - -/* Called when port is closed. Wait for remaining data to be - * sent. Disable port and free resources. - */ -static void close(struct tty_struct *tty, struct file *filp) -{ - SLMP_INFO * info = tty->driver_data; - - if (sanity_check(info, tty->name, "close")) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s close() entry, count=%d\n", - __FILE__,__LINE__, info->device_name, info->port.count); - - if (tty_port_close_start(&info->port, tty, filp) == 0) - goto cleanup; - - mutex_lock(&info->port.mutex); - if (info->port.flags & ASYNC_INITIALIZED) - wait_until_sent(tty, info->timeout); - - flush_buffer(tty); - tty_ldisc_flush(tty); - shutdown(info); - mutex_unlock(&info->port.mutex); - - tty_port_close_end(&info->port, tty); - info->port.tty = NULL; -cleanup: - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__, - tty->driver->name, info->port.count); -} - -/* Called by tty_hangup() when a hangup is signaled. - * This is the same as closing all open descriptors for the port. - */ -static void hangup(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s hangup()\n", - __FILE__,__LINE__, info->device_name ); - - if (sanity_check(info, tty->name, "hangup")) - return; - - mutex_lock(&info->port.mutex); - flush_buffer(tty); - shutdown(info); - - spin_lock_irqsave(&info->port.lock, flags); - info->port.count = 0; - info->port.flags &= ~ASYNC_NORMAL_ACTIVE; - info->port.tty = NULL; - spin_unlock_irqrestore(&info->port.lock, flags); - mutex_unlock(&info->port.mutex); - - wake_up_interruptible(&info->port.open_wait); -} - -/* Set new termios settings - */ -static void set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s set_termios()\n", __FILE__,__LINE__, - tty->driver->name ); - - change_params(info); - - /* Handle transition to B0 status */ - if (old_termios->c_cflag & CBAUD && - !(tty->termios->c_cflag & CBAUD)) { - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } - - /* Handle transition away from B0 status */ - if (!(old_termios->c_cflag & CBAUD) && - tty->termios->c_cflag & CBAUD) { - info->serial_signals |= SerialSignal_DTR; - if (!(tty->termios->c_cflag & CRTSCTS) || - !test_bit(TTY_THROTTLED, &tty->flags)) { - info->serial_signals |= SerialSignal_RTS; - } - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } - - /* Handle turning off CRTSCTS */ - if (old_termios->c_cflag & CRTSCTS && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - tx_release(tty); - } -} - -/* Send a block of data - * - * Arguments: - * - * tty pointer to tty information structure - * buf pointer to buffer containing send data - * count size of send data in bytes - * - * Return Value: number of characters written - */ -static int write(struct tty_struct *tty, - const unsigned char *buf, int count) -{ - int c, ret = 0; - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s write() count=%d\n", - __FILE__,__LINE__,info->device_name,count); - - if (sanity_check(info, tty->name, "write")) - goto cleanup; - - if (!info->tx_buf) - goto cleanup; - - if (info->params.mode == MGSL_MODE_HDLC) { - if (count > info->max_frame_size) { - ret = -EIO; - goto cleanup; - } - if (info->tx_active) - goto cleanup; - if (info->tx_count) { - /* send accumulated data from send_char() calls */ - /* as frame and wait before accepting more data. */ - tx_load_dma_buffer(info, info->tx_buf, info->tx_count); - goto start; - } - ret = info->tx_count = count; - tx_load_dma_buffer(info, buf, count); - goto start; - } - - for (;;) { - c = min_t(int, count, - min(info->max_frame_size - info->tx_count - 1, - info->max_frame_size - info->tx_put)); - if (c <= 0) - break; - - memcpy(info->tx_buf + info->tx_put, buf, c); - - spin_lock_irqsave(&info->lock,flags); - info->tx_put += c; - if (info->tx_put >= info->max_frame_size) - info->tx_put -= info->max_frame_size; - info->tx_count += c; - spin_unlock_irqrestore(&info->lock,flags); - - buf += c; - count -= c; - ret += c; - } - - if (info->params.mode == MGSL_MODE_HDLC) { - if (count) { - ret = info->tx_count = 0; - goto cleanup; - } - tx_load_dma_buffer(info, info->tx_buf, info->tx_count); - } -start: - if (info->tx_count && !tty->stopped && !tty->hw_stopped) { - spin_lock_irqsave(&info->lock,flags); - if (!info->tx_active) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - } - -cleanup: - if (debug_level >= DEBUG_LEVEL_INFO) - printk( "%s(%d):%s write() returning=%d\n", - __FILE__,__LINE__,info->device_name,ret); - return ret; -} - -/* Add a character to the transmit buffer. - */ -static int put_char(struct tty_struct *tty, unsigned char ch) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - int ret = 0; - - if ( debug_level >= DEBUG_LEVEL_INFO ) { - printk( "%s(%d):%s put_char(%d)\n", - __FILE__,__LINE__,info->device_name,ch); - } - - if (sanity_check(info, tty->name, "put_char")) - return 0; - - if (!info->tx_buf) - return 0; - - spin_lock_irqsave(&info->lock,flags); - - if ( (info->params.mode != MGSL_MODE_HDLC) || - !info->tx_active ) { - - if (info->tx_count < info->max_frame_size - 1) { - info->tx_buf[info->tx_put++] = ch; - if (info->tx_put >= info->max_frame_size) - info->tx_put -= info->max_frame_size; - info->tx_count++; - ret = 1; - } - } - - spin_unlock_irqrestore(&info->lock,flags); - return ret; -} - -/* Send a high-priority XON/XOFF character - */ -static void send_xchar(struct tty_struct *tty, char ch) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s send_xchar(%d)\n", - __FILE__,__LINE__, info->device_name, ch ); - - if (sanity_check(info, tty->name, "send_xchar")) - return; - - info->x_char = ch; - if (ch) { - /* Make sure transmit interrupts are on */ - spin_lock_irqsave(&info->lock,flags); - if (!info->tx_enabled) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - } -} - -/* Wait until the transmitter is empty. - */ -static void wait_until_sent(struct tty_struct *tty, int timeout) -{ - SLMP_INFO * info = tty->driver_data; - unsigned long orig_jiffies, char_time; - - if (!info ) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s wait_until_sent() entry\n", - __FILE__,__LINE__, info->device_name ); - - if (sanity_check(info, tty->name, "wait_until_sent")) - return; - - if (!test_bit(ASYNCB_INITIALIZED, &info->port.flags)) - goto exit; - - orig_jiffies = jiffies; - - /* Set check interval to 1/5 of estimated time to - * send a character, and make it at least 1. The check - * interval should also be less than the timeout. - * Note: use tight timings here to satisfy the NIST-PCTS. - */ - - if ( info->params.data_rate ) { - char_time = info->timeout/(32 * 5); - if (!char_time) - char_time++; - } else - char_time = 1; - - if (timeout) - char_time = min_t(unsigned long, char_time, timeout); - - if ( info->params.mode == MGSL_MODE_HDLC ) { - while (info->tx_active) { - msleep_interruptible(jiffies_to_msecs(char_time)); - if (signal_pending(current)) - break; - if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; - } - } else { - /* - * TODO: determine if there is something similar to USC16C32 - * TXSTATUS_ALL_SENT status - */ - while ( info->tx_active && info->tx_enabled) { - msleep_interruptible(jiffies_to_msecs(char_time)); - if (signal_pending(current)) - break; - if (timeout && time_after(jiffies, orig_jiffies + timeout)) - break; - } - } - -exit: - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s wait_until_sent() exit\n", - __FILE__,__LINE__, info->device_name ); -} - -/* Return the count of free bytes in transmit buffer - */ -static int write_room(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - int ret; - - if (sanity_check(info, tty->name, "write_room")) - return 0; - - if (info->params.mode == MGSL_MODE_HDLC) { - ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE; - } else { - ret = info->max_frame_size - info->tx_count - 1; - if (ret < 0) - ret = 0; - } - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s write_room()=%d\n", - __FILE__, __LINE__, info->device_name, ret); - - return ret; -} - -/* enable transmitter and send remaining buffered characters - */ -static void flush_chars(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s flush_chars() entry tx_count=%d\n", - __FILE__,__LINE__,info->device_name,info->tx_count); - - if (sanity_check(info, tty->name, "flush_chars")) - return; - - if (info->tx_count <= 0 || tty->stopped || tty->hw_stopped || - !info->tx_buf) - return; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s flush_chars() entry, starting transmitter\n", - __FILE__,__LINE__,info->device_name ); - - spin_lock_irqsave(&info->lock,flags); - - if (!info->tx_active) { - if ( (info->params.mode == MGSL_MODE_HDLC) && - info->tx_count ) { - /* operating in synchronous (frame oriented) mode */ - /* copy data from circular tx_buf to */ - /* transmit DMA buffer. */ - tx_load_dma_buffer(info, - info->tx_buf,info->tx_count); - } - tx_start(info); - } - - spin_unlock_irqrestore(&info->lock,flags); -} - -/* Discard all data in the send buffer - */ -static void flush_buffer(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s flush_buffer() entry\n", - __FILE__,__LINE__, info->device_name ); - - if (sanity_check(info, tty->name, "flush_buffer")) - return; - - spin_lock_irqsave(&info->lock,flags); - info->tx_count = info->tx_put = info->tx_get = 0; - del_timer(&info->tx_timer); - spin_unlock_irqrestore(&info->lock,flags); - - tty_wakeup(tty); -} - -/* throttle (stop) transmitter - */ -static void tx_hold(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "tx_hold")) - return; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("%s(%d):%s tx_hold()\n", - __FILE__,__LINE__,info->device_name); - - spin_lock_irqsave(&info->lock,flags); - if (info->tx_enabled) - tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); -} - -/* release (start) transmitter - */ -static void tx_release(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (sanity_check(info, tty->name, "tx_release")) - return; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("%s(%d):%s tx_release()\n", - __FILE__,__LINE__,info->device_name); - - spin_lock_irqsave(&info->lock,flags); - if (!info->tx_enabled) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); -} - -/* Service an IOCTL request - * - * Arguments: - * - * tty pointer to tty instance data - * cmd IOCTL command code - * arg command argument/context - * - * Return Value: 0 if success, otherwise error code - */ -static int ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - SLMP_INFO *info = tty->driver_data; - void __user *argp = (void __user *)arg; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s ioctl() cmd=%08X\n", __FILE__,__LINE__, - info->device_name, cmd ); - - if (sanity_check(info, tty->name, "ioctl")) - return -ENODEV; - - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT)) { - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - } - - switch (cmd) { - case MGSL_IOCGPARAMS: - return get_params(info, argp); - case MGSL_IOCSPARAMS: - return set_params(info, argp); - case MGSL_IOCGTXIDLE: - return get_txidle(info, argp); - case MGSL_IOCSTXIDLE: - return set_txidle(info, (int)arg); - case MGSL_IOCTXENABLE: - return tx_enable(info, (int)arg); - case MGSL_IOCRXENABLE: - return rx_enable(info, (int)arg); - case MGSL_IOCTXABORT: - return tx_abort(info); - case MGSL_IOCGSTATS: - return get_stats(info, argp); - case MGSL_IOCWAITEVENT: - return wait_mgsl_event(info, argp); - case MGSL_IOCLOOPTXDONE: - return 0; // TODO: Not supported, need to document - /* Wait for modem input (DCD,RI,DSR,CTS) change - * as specified by mask in arg (TIOCM_RNG/DSR/CD/CTS) - */ - case TIOCMIWAIT: - return modem_input_wait(info,(int)arg); - - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - default: - return -ENOIOCTLCMD; - } - return 0; -} - -static int get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) -{ - SLMP_INFO *info = tty->driver_data; - struct mgsl_icount cnow; /* kernel counter temps */ - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->lock,flags); - - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->frame = cnow.frame; - icount->overrun = cnow.overrun; - icount->parity = cnow.parity; - icount->brk = cnow.brk; - icount->buf_overrun = cnow.buf_overrun; - - return 0; -} - -/* - * /proc fs routines.... - */ - -static inline void line_info(struct seq_file *m, SLMP_INFO *info) -{ - char stat_buf[30]; - unsigned long flags; - - seq_printf(m, "%s: SCABase=%08x Mem=%08X StatusControl=%08x LCR=%08X\n" - "\tIRQ=%d MaxFrameSize=%u\n", - info->device_name, - info->phys_sca_base, - info->phys_memory_base, - info->phys_statctrl_base, - info->phys_lcr_base, - info->irq_level, - info->max_frame_size ); - - /* output current serial signal states */ - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - - stat_buf[0] = 0; - stat_buf[1] = 0; - if (info->serial_signals & SerialSignal_RTS) - strcat(stat_buf, "|RTS"); - if (info->serial_signals & SerialSignal_CTS) - strcat(stat_buf, "|CTS"); - if (info->serial_signals & SerialSignal_DTR) - strcat(stat_buf, "|DTR"); - if (info->serial_signals & SerialSignal_DSR) - strcat(stat_buf, "|DSR"); - if (info->serial_signals & SerialSignal_DCD) - strcat(stat_buf, "|CD"); - if (info->serial_signals & SerialSignal_RI) - strcat(stat_buf, "|RI"); - - if (info->params.mode == MGSL_MODE_HDLC) { - seq_printf(m, "\tHDLC txok:%d rxok:%d", - info->icount.txok, info->icount.rxok); - if (info->icount.txunder) - seq_printf(m, " txunder:%d", info->icount.txunder); - if (info->icount.txabort) - seq_printf(m, " txabort:%d", info->icount.txabort); - if (info->icount.rxshort) - seq_printf(m, " rxshort:%d", info->icount.rxshort); - if (info->icount.rxlong) - seq_printf(m, " rxlong:%d", info->icount.rxlong); - if (info->icount.rxover) - seq_printf(m, " rxover:%d", info->icount.rxover); - if (info->icount.rxcrc) - seq_printf(m, " rxlong:%d", info->icount.rxcrc); - } else { - seq_printf(m, "\tASYNC tx:%d rx:%d", - info->icount.tx, info->icount.rx); - if (info->icount.frame) - seq_printf(m, " fe:%d", info->icount.frame); - if (info->icount.parity) - seq_printf(m, " pe:%d", info->icount.parity); - if (info->icount.brk) - seq_printf(m, " brk:%d", info->icount.brk); - if (info->icount.overrun) - seq_printf(m, " oe:%d", info->icount.overrun); - } - - /* Append serial signal status to end */ - seq_printf(m, " %s\n", stat_buf+1); - - seq_printf(m, "\ttxactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", - info->tx_active,info->bh_requested,info->bh_running, - info->pending_bh); -} - -/* Called to print information about devices - */ -static int synclinkmp_proc_show(struct seq_file *m, void *v) -{ - SLMP_INFO *info; - - seq_printf(m, "synclinkmp driver:%s\n", driver_version); - - info = synclinkmp_device_list; - while( info ) { - line_info(m, info); - info = info->next_device; - } - return 0; -} - -static int synclinkmp_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, synclinkmp_proc_show, NULL); -} - -static const struct file_operations synclinkmp_proc_fops = { - .owner = THIS_MODULE, - .open = synclinkmp_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* Return the count of bytes in transmit buffer - */ -static int chars_in_buffer(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - - if (sanity_check(info, tty->name, "chars_in_buffer")) - return 0; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s chars_in_buffer()=%d\n", - __FILE__, __LINE__, info->device_name, info->tx_count); - - return info->tx_count; -} - -/* Signal remote device to throttle send data (our receive data) - */ -static void throttle(struct tty_struct * tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s throttle() entry\n", - __FILE__,__LINE__, info->device_name ); - - if (sanity_check(info, tty->name, "throttle")) - return; - - if (I_IXOFF(tty)) - send_xchar(tty, STOP_CHAR(tty)); - - if (tty->termios->c_cflag & CRTSCTS) { - spin_lock_irqsave(&info->lock,flags); - info->serial_signals &= ~SerialSignal_RTS; - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } -} - -/* Signal remote device to stop throttling send data (our receive data) - */ -static void unthrottle(struct tty_struct * tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s unthrottle() entry\n", - __FILE__,__LINE__, info->device_name ); - - if (sanity_check(info, tty->name, "unthrottle")) - return; - - if (I_IXOFF(tty)) { - if (info->x_char) - info->x_char = 0; - else - send_xchar(tty, START_CHAR(tty)); - } - - if (tty->termios->c_cflag & CRTSCTS) { - spin_lock_irqsave(&info->lock,flags); - info->serial_signals |= SerialSignal_RTS; - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - } -} - -/* set or clear transmit break condition - * break_state -1=set break condition, 0=clear - */ -static int set_break(struct tty_struct *tty, int break_state) -{ - unsigned char RegValue; - SLMP_INFO * info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s set_break(%d)\n", - __FILE__,__LINE__, info->device_name, break_state); - - if (sanity_check(info, tty->name, "set_break")) - return -EINVAL; - - spin_lock_irqsave(&info->lock,flags); - RegValue = read_reg(info, CTL); - if (break_state == -1) - RegValue |= BIT3; - else - RegValue &= ~BIT3; - write_reg(info, CTL, RegValue); - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -#if SYNCLINK_GENERIC_HDLC - -/** - * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) - * set encoding and frame check sequence (FCS) options - * - * dev pointer to network device structure - * encoding serial encoding setting - * parity FCS setting - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, - unsigned short parity) -{ - SLMP_INFO *info = dev_to_port(dev); - unsigned char new_encoding; - unsigned short new_crctype; - - /* return error if TTY interface open */ - if (info->port.count) - return -EBUSY; - - switch (encoding) - { - case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; - case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; - case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; - case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; - case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; - default: return -EINVAL; - } - - switch (parity) - { - case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; - case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; - case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; - default: return -EINVAL; - } - - info->params.encoding = new_encoding; - info->params.crc_type = new_crctype; - - /* if network interface up, reprogram hardware */ - if (info->netcount) - program_hw(info); - - return 0; -} - -/** - * called by generic HDLC layer to send frame - * - * skb socket buffer containing HDLC frame - * dev pointer to network device structure - */ -static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - SLMP_INFO *info = dev_to_port(dev); - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); - - /* stop sending until this frame completes */ - netif_stop_queue(dev); - - /* copy data to device buffers */ - info->tx_count = skb->len; - tx_load_dma_buffer(info, skb->data, skb->len); - - /* update network statistics */ - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - - /* done with socket buffer, so free it */ - dev_kfree_skb(skb); - - /* save start time for transmit timeout detection */ - dev->trans_start = jiffies; - - /* start hardware transmitter if necessary */ - spin_lock_irqsave(&info->lock,flags); - if (!info->tx_active) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - - return NETDEV_TX_OK; -} - -/** - * called by network layer when interface enabled - * claim resources and initialize hardware - * - * dev pointer to network device structure - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_open(struct net_device *dev) -{ - SLMP_INFO *info = dev_to_port(dev); - int rc; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); - - /* generic HDLC layer open processing */ - if ((rc = hdlc_open(dev))) - return rc; - - /* arbitrate between network and tty opens */ - spin_lock_irqsave(&info->netlock, flags); - if (info->port.count != 0 || info->netcount != 0) { - printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); - spin_unlock_irqrestore(&info->netlock, flags); - return -EBUSY; - } - info->netcount=1; - spin_unlock_irqrestore(&info->netlock, flags); - - /* claim resources and init adapter */ - if ((rc = startup(info)) != 0) { - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - return rc; - } - - /* assert DTR and RTS, apply hardware settings */ - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - program_hw(info); - - /* enable network layer transmit */ - dev->trans_start = jiffies; - netif_start_queue(dev); - - /* inform generic HDLC layer of current DCD status */ - spin_lock_irqsave(&info->lock, flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock, flags); - if (info->serial_signals & SerialSignal_DCD) - netif_carrier_on(dev); - else - netif_carrier_off(dev); - return 0; -} - -/** - * called by network layer when interface is disabled - * shutdown hardware and release resources - * - * dev pointer to network device structure - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_close(struct net_device *dev) -{ - SLMP_INFO *info = dev_to_port(dev); - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); - - netif_stop_queue(dev); - - /* shutdown adapter and release resources */ - shutdown(info); - - hdlc_close(dev); - - spin_lock_irqsave(&info->netlock, flags); - info->netcount=0; - spin_unlock_irqrestore(&info->netlock, flags); - - return 0; -} - -/** - * called by network layer to process IOCTL call to network device - * - * dev pointer to network device structure - * ifr pointer to network interface request structure - * cmd IOCTL command code - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - const size_t size = sizeof(sync_serial_settings); - sync_serial_settings new_line; - sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; - SLMP_INFO *info = dev_to_port(dev); - unsigned int flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); - - /* return error if TTY interface open */ - if (info->port.count) - return -EBUSY; - - if (cmd != SIOCWANDEV) - return hdlc_ioctl(dev, ifr, cmd); - - switch(ifr->ifr_settings.type) { - case IF_GET_IFACE: /* return current sync_serial_settings */ - - ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; - if (ifr->ifr_settings.size < size) { - ifr->ifr_settings.size = size; /* data size wanted */ - return -ENOBUFS; - } - - flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); - - switch (flags){ - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; - case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; - default: new_line.clock_type = CLOCK_DEFAULT; - } - - new_line.clock_rate = info->params.clock_speed; - new_line.loopback = info->params.loopback ? 1:0; - - if (copy_to_user(line, &new_line, size)) - return -EFAULT; - return 0; - - case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ - - if(!capable(CAP_NET_ADMIN)) - return -EPERM; - if (copy_from_user(&new_line, line, size)) - return -EFAULT; - - switch (new_line.clock_type) - { - case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; - case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; - case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; - case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; - case CLOCK_DEFAULT: flags = info->params.flags & - (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; - default: return -EINVAL; - } - - if (new_line.loopback != 0 && new_line.loopback != 1) - return -EINVAL; - - info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); - info->params.flags |= flags; - - info->params.loopback = new_line.loopback; - - if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) - info->params.clock_speed = new_line.clock_rate; - else - info->params.clock_speed = 0; - - /* if network interface up, reprogram hardware */ - if (info->netcount) - program_hw(info); - return 0; - - default: - return hdlc_ioctl(dev, ifr, cmd); - } -} - -/** - * called by network layer when transmit timeout is detected - * - * dev pointer to network device structure - */ -static void hdlcdev_tx_timeout(struct net_device *dev) -{ - SLMP_INFO *info = dev_to_port(dev); - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("hdlcdev_tx_timeout(%s)\n",dev->name); - - dev->stats.tx_errors++; - dev->stats.tx_aborted_errors++; - - spin_lock_irqsave(&info->lock,flags); - tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); - - netif_wake_queue(dev); -} - -/** - * called by device driver when transmit completes - * reenable network layer transmit if stopped - * - * info pointer to device instance information - */ -static void hdlcdev_tx_done(SLMP_INFO *info) -{ - if (netif_queue_stopped(info->netdev)) - netif_wake_queue(info->netdev); -} - -/** - * called by device driver when frame received - * pass frame to network layer - * - * info pointer to device instance information - * buf pointer to buffer contianing frame data - * size count of data bytes in buf - */ -static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size) -{ - struct sk_buff *skb = dev_alloc_skb(size); - struct net_device *dev = info->netdev; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("hdlcdev_rx(%s)\n",dev->name); - - if (skb == NULL) { - printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", - dev->name); - dev->stats.rx_dropped++; - return; - } - - memcpy(skb_put(skb, size), buf, size); - - skb->protocol = hdlc_type_trans(skb, dev); - - dev->stats.rx_packets++; - dev->stats.rx_bytes += size; - - netif_rx(skb); -} - -static const struct net_device_ops hdlcdev_ops = { - .ndo_open = hdlcdev_open, - .ndo_stop = hdlcdev_close, - .ndo_change_mtu = hdlc_change_mtu, - .ndo_start_xmit = hdlc_start_xmit, - .ndo_do_ioctl = hdlcdev_ioctl, - .ndo_tx_timeout = hdlcdev_tx_timeout, -}; - -/** - * called by device driver when adding device instance - * do generic HDLC initialization - * - * info pointer to device instance information - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_init(SLMP_INFO *info) -{ - int rc; - struct net_device *dev; - hdlc_device *hdlc; - - /* allocate and initialize network and HDLC layer objects */ - - if (!(dev = alloc_hdlcdev(info))) { - printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); - return -ENOMEM; - } - - /* for network layer reporting purposes only */ - dev->mem_start = info->phys_sca_base; - dev->mem_end = info->phys_sca_base + SCA_BASE_SIZE - 1; - dev->irq = info->irq_level; - - /* network layer callbacks and settings */ - dev->netdev_ops = &hdlcdev_ops; - dev->watchdog_timeo = 10 * HZ; - dev->tx_queue_len = 50; - - /* generic HDLC layer callbacks and settings */ - hdlc = dev_to_hdlc(dev); - hdlc->attach = hdlcdev_attach; - hdlc->xmit = hdlcdev_xmit; - - /* register objects with HDLC layer */ - if ((rc = register_hdlc_device(dev))) { - printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); - free_netdev(dev); - return rc; - } - - info->netdev = dev; - return 0; -} - -/** - * called by device driver when removing device instance - * do generic HDLC cleanup - * - * info pointer to device instance information - */ -static void hdlcdev_exit(SLMP_INFO *info) -{ - unregister_hdlc_device(info->netdev); - free_netdev(info->netdev); - info->netdev = NULL; -} - -#endif /* CONFIG_HDLC */ - - -/* Return next bottom half action to perform. - * Return Value: BH action code or 0 if nothing to do. - */ -static int bh_action(SLMP_INFO *info) -{ - unsigned long flags; - int rc = 0; - - spin_lock_irqsave(&info->lock,flags); - - if (info->pending_bh & BH_RECEIVE) { - info->pending_bh &= ~BH_RECEIVE; - rc = BH_RECEIVE; - } else if (info->pending_bh & BH_TRANSMIT) { - info->pending_bh &= ~BH_TRANSMIT; - rc = BH_TRANSMIT; - } else if (info->pending_bh & BH_STATUS) { - info->pending_bh &= ~BH_STATUS; - rc = BH_STATUS; - } - - if (!rc) { - /* Mark BH routine as complete */ - info->bh_running = false; - info->bh_requested = false; - } - - spin_unlock_irqrestore(&info->lock,flags); - - return rc; -} - -/* Perform bottom half processing of work items queued by ISR. - */ -static void bh_handler(struct work_struct *work) -{ - SLMP_INFO *info = container_of(work, SLMP_INFO, task); - int action; - - if (!info) - return; - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):%s bh_handler() entry\n", - __FILE__,__LINE__,info->device_name); - - info->bh_running = true; - - while((action = bh_action(info)) != 0) { - - /* Process work item */ - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):%s bh_handler() work item action=%d\n", - __FILE__,__LINE__,info->device_name, action); - - switch (action) { - - case BH_RECEIVE: - bh_receive(info); - break; - case BH_TRANSMIT: - bh_transmit(info); - break; - case BH_STATUS: - bh_status(info); - break; - default: - /* unknown work item ID */ - printk("%s(%d):%s Unknown work item ID=%08X!\n", - __FILE__,__LINE__,info->device_name,action); - break; - } - } - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):%s bh_handler() exit\n", - __FILE__,__LINE__,info->device_name); -} - -static void bh_receive(SLMP_INFO *info) -{ - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):%s bh_receive()\n", - __FILE__,__LINE__,info->device_name); - - while( rx_get_frame(info) ); -} - -static void bh_transmit(SLMP_INFO *info) -{ - struct tty_struct *tty = info->port.tty; - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):%s bh_transmit() entry\n", - __FILE__,__LINE__,info->device_name); - - if (tty) - tty_wakeup(tty); -} - -static void bh_status(SLMP_INFO *info) -{ - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):%s bh_status() entry\n", - __FILE__,__LINE__,info->device_name); - - info->ri_chkcount = 0; - info->dsr_chkcount = 0; - info->dcd_chkcount = 0; - info->cts_chkcount = 0; -} - -static void isr_timer(SLMP_INFO * info) -{ - unsigned char timer = (info->port_num & 1) ? TIMER2 : TIMER0; - - /* IER2<7..4> = timer<3..0> interrupt enables (0=disabled) */ - write_reg(info, IER2, 0); - - /* TMCS, Timer Control/Status Register - * - * 07 CMF, Compare match flag (read only) 1=match - * 06 ECMI, CMF Interrupt Enable: 0=disabled - * 05 Reserved, must be 0 - * 04 TME, Timer Enable - * 03..00 Reserved, must be 0 - * - * 0000 0000 - */ - write_reg(info, (unsigned char)(timer + TMCS), 0); - - info->irq_occurred = true; - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_timer()\n", - __FILE__,__LINE__,info->device_name); -} - -static void isr_rxint(SLMP_INFO * info) -{ - struct tty_struct *tty = info->port.tty; - struct mgsl_icount *icount = &info->icount; - unsigned char status = read_reg(info, SR1) & info->ie1_value & (FLGD + IDLD + CDCD + BRKD); - unsigned char status2 = read_reg(info, SR2) & info->ie2_value & OVRN; - - /* clear status bits */ - if (status) - write_reg(info, SR1, status); - - if (status2) - write_reg(info, SR2, status2); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_rxint status=%02X %02x\n", - __FILE__,__LINE__,info->device_name,status,status2); - - if (info->params.mode == MGSL_MODE_ASYNC) { - if (status & BRKD) { - icount->brk++; - - /* process break detection if tty control - * is not set to ignore it - */ - if ( tty ) { - if (!(status & info->ignore_status_mask1)) { - if (info->read_status_mask1 & BRKD) { - tty_insert_flip_char(tty, 0, TTY_BREAK); - if (info->port.flags & ASYNC_SAK) - do_SAK(tty); - } - } - } - } - } - else { - if (status & (FLGD|IDLD)) { - if (status & FLGD) - info->icount.exithunt++; - else if (status & IDLD) - info->icount.rxidle++; - wake_up_interruptible(&info->event_wait_q); - } - } - - if (status & CDCD) { - /* simulate a common modem status change interrupt - * for our handler - */ - get_signals( info ); - isr_io_pin(info, - MISCSTATUS_DCD_LATCHED|(info->serial_signals&SerialSignal_DCD)); - } -} - -/* - * handle async rx data interrupts - */ -static void isr_rxrdy(SLMP_INFO * info) -{ - u16 status; - unsigned char DataByte; - struct tty_struct *tty = info->port.tty; - struct mgsl_icount *icount = &info->icount; - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_rxrdy\n", - __FILE__,__LINE__,info->device_name); - - while((status = read_reg(info,CST0)) & BIT0) - { - int flag = 0; - bool over = false; - DataByte = read_reg(info,TRB); - - icount->rx++; - - if ( status & (PE + FRME + OVRN) ) { - printk("%s(%d):%s rxerr=%04X\n", - __FILE__,__LINE__,info->device_name,status); - - /* update error statistics */ - if (status & PE) - icount->parity++; - else if (status & FRME) - icount->frame++; - else if (status & OVRN) - icount->overrun++; - - /* discard char if tty control flags say so */ - if (status & info->ignore_status_mask2) - continue; - - status &= info->read_status_mask2; - - if ( tty ) { - if (status & PE) - flag = TTY_PARITY; - else if (status & FRME) - flag = TTY_FRAME; - if (status & OVRN) { - /* Overrun is special, since it's - * reported immediately, and doesn't - * affect the current character - */ - over = true; - } - } - } /* end of if (error) */ - - if ( tty ) { - tty_insert_flip_char(tty, DataByte, flag); - if (over) - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } - } - - if ( debug_level >= DEBUG_LEVEL_ISR ) { - printk("%s(%d):%s rx=%d brk=%d parity=%d frame=%d overrun=%d\n", - __FILE__,__LINE__,info->device_name, - icount->rx,icount->brk,icount->parity, - icount->frame,icount->overrun); - } - - if ( tty ) - tty_flip_buffer_push(tty); -} - -static void isr_txeom(SLMP_INFO * info, unsigned char status) -{ - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_txeom status=%02x\n", - __FILE__,__LINE__,info->device_name,status); - - write_reg(info, TXDMA + DIR, 0x00); /* disable Tx DMA IRQs */ - write_reg(info, TXDMA + DSR, 0xc0); /* clear IRQs and disable DMA */ - write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ - - if (status & UDRN) { - write_reg(info, CMD, TXRESET); - write_reg(info, CMD, TXENABLE); - } else - write_reg(info, CMD, TXBUFCLR); - - /* disable and clear tx interrupts */ - info->ie0_value &= ~TXRDYE; - info->ie1_value &= ~(IDLE + UDRN); - write_reg16(info, IE0, (unsigned short)((info->ie1_value << 8) + info->ie0_value)); - write_reg(info, SR1, (unsigned char)(UDRN + IDLE)); - - if ( info->tx_active ) { - if (info->params.mode != MGSL_MODE_ASYNC) { - if (status & UDRN) - info->icount.txunder++; - else if (status & IDLE) - info->icount.txok++; - } - - info->tx_active = false; - info->tx_count = info->tx_put = info->tx_get = 0; - - del_timer(&info->tx_timer); - - if (info->params.mode != MGSL_MODE_ASYNC && info->drop_rts_on_tx_done ) { - info->serial_signals &= ~SerialSignal_RTS; - info->drop_rts_on_tx_done = false; - set_signals(info); - } - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_tx_done(info); - else -#endif - { - if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) { - tx_stop(info); - return; - } - info->pending_bh |= BH_TRANSMIT; - } - } -} - - -/* - * handle tx status interrupts - */ -static void isr_txint(SLMP_INFO * info) -{ - unsigned char status = read_reg(info, SR1) & info->ie1_value & (UDRN + IDLE + CCTS); - - /* clear status bits */ - write_reg(info, SR1, status); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_txint status=%02x\n", - __FILE__,__LINE__,info->device_name,status); - - if (status & (UDRN + IDLE)) - isr_txeom(info, status); - - if (status & CCTS) { - /* simulate a common modem status change interrupt - * for our handler - */ - get_signals( info ); - isr_io_pin(info, - MISCSTATUS_CTS_LATCHED|(info->serial_signals&SerialSignal_CTS)); - - } -} - -/* - * handle async tx data interrupts - */ -static void isr_txrdy(SLMP_INFO * info) -{ - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_txrdy() tx_count=%d\n", - __FILE__,__LINE__,info->device_name,info->tx_count); - - if (info->params.mode != MGSL_MODE_ASYNC) { - /* disable TXRDY IRQ, enable IDLE IRQ */ - info->ie0_value &= ~TXRDYE; - info->ie1_value |= IDLE; - write_reg16(info, IE0, (unsigned short)((info->ie1_value << 8) + info->ie0_value)); - return; - } - - if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) { - tx_stop(info); - return; - } - - if ( info->tx_count ) - tx_load_fifo( info ); - else { - info->tx_active = false; - info->ie0_value &= ~TXRDYE; - write_reg(info, IE0, info->ie0_value); - } - - if (info->tx_count < WAKEUP_CHARS) - info->pending_bh |= BH_TRANSMIT; -} - -static void isr_rxdmaok(SLMP_INFO * info) -{ - /* BIT7 = EOT (end of transfer) - * BIT6 = EOM (end of message/frame) - */ - unsigned char status = read_reg(info,RXDMA + DSR) & 0xc0; - - /* clear IRQ (BIT0 must be 1 to prevent clearing DE bit) */ - write_reg(info, RXDMA + DSR, (unsigned char)(status | 1)); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_rxdmaok(), status=%02x\n", - __FILE__,__LINE__,info->device_name,status); - - info->pending_bh |= BH_RECEIVE; -} - -static void isr_rxdmaerror(SLMP_INFO * info) -{ - /* BIT5 = BOF (buffer overflow) - * BIT4 = COF (counter overflow) - */ - unsigned char status = read_reg(info,RXDMA + DSR) & 0x30; - - /* clear IRQ (BIT0 must be 1 to prevent clearing DE bit) */ - write_reg(info, RXDMA + DSR, (unsigned char)(status | 1)); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_rxdmaerror(), status=%02x\n", - __FILE__,__LINE__,info->device_name,status); - - info->rx_overflow = true; - info->pending_bh |= BH_RECEIVE; -} - -static void isr_txdmaok(SLMP_INFO * info) -{ - unsigned char status_reg1 = read_reg(info, SR1); - - write_reg(info, TXDMA + DIR, 0x00); /* disable Tx DMA IRQs */ - write_reg(info, TXDMA + DSR, 0xc0); /* clear IRQs and disable DMA */ - write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_txdmaok(), status=%02x\n", - __FILE__,__LINE__,info->device_name,status_reg1); - - /* program TXRDY as FIFO empty flag, enable TXRDY IRQ */ - write_reg16(info, TRC0, 0); - info->ie0_value |= TXRDYE; - write_reg(info, IE0, info->ie0_value); -} - -static void isr_txdmaerror(SLMP_INFO * info) -{ - /* BIT5 = BOF (buffer overflow) - * BIT4 = COF (counter overflow) - */ - unsigned char status = read_reg(info,TXDMA + DSR) & 0x30; - - /* clear IRQ (BIT0 must be 1 to prevent clearing DE bit) */ - write_reg(info, TXDMA + DSR, (unsigned char)(status | 1)); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s isr_txdmaerror(), status=%02x\n", - __FILE__,__LINE__,info->device_name,status); -} - -/* handle input serial signal changes - */ -static void isr_io_pin( SLMP_INFO *info, u16 status ) -{ - struct mgsl_icount *icount; - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):isr_io_pin status=%04X\n", - __FILE__,__LINE__,status); - - if (status & (MISCSTATUS_CTS_LATCHED | MISCSTATUS_DCD_LATCHED | - MISCSTATUS_DSR_LATCHED | MISCSTATUS_RI_LATCHED) ) { - icount = &info->icount; - /* update input line counters */ - if (status & MISCSTATUS_RI_LATCHED) { - icount->rng++; - if ( status & SerialSignal_RI ) - info->input_signal_events.ri_up++; - else - info->input_signal_events.ri_down++; - } - if (status & MISCSTATUS_DSR_LATCHED) { - icount->dsr++; - if ( status & SerialSignal_DSR ) - info->input_signal_events.dsr_up++; - else - info->input_signal_events.dsr_down++; - } - if (status & MISCSTATUS_DCD_LATCHED) { - if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) { - info->ie1_value &= ~CDCD; - write_reg(info, IE1, info->ie1_value); - } - icount->dcd++; - if (status & SerialSignal_DCD) { - info->input_signal_events.dcd_up++; - } else - info->input_signal_events.dcd_down++; -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) { - if (status & SerialSignal_DCD) - netif_carrier_on(info->netdev); - else - netif_carrier_off(info->netdev); - } -#endif - } - if (status & MISCSTATUS_CTS_LATCHED) - { - if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) { - info->ie1_value &= ~CCTS; - write_reg(info, IE1, info->ie1_value); - } - icount->cts++; - if ( status & SerialSignal_CTS ) - info->input_signal_events.cts_up++; - else - info->input_signal_events.cts_down++; - } - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - - if ( (info->port.flags & ASYNC_CHECK_CD) && - (status & MISCSTATUS_DCD_LATCHED) ) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s CD now %s...", info->device_name, - (status & SerialSignal_DCD) ? "on" : "off"); - if (status & SerialSignal_DCD) - wake_up_interruptible(&info->port.open_wait); - else { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("doing serial hangup..."); - if (info->port.tty) - tty_hangup(info->port.tty); - } - } - - if ( (info->port.flags & ASYNC_CTS_FLOW) && - (status & MISCSTATUS_CTS_LATCHED) ) { - if ( info->port.tty ) { - if (info->port.tty->hw_stopped) { - if (status & SerialSignal_CTS) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("CTS tx start..."); - info->port.tty->hw_stopped = 0; - tx_start(info); - info->pending_bh |= BH_TRANSMIT; - return; - } - } else { - if (!(status & SerialSignal_CTS)) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("CTS tx stop..."); - info->port.tty->hw_stopped = 1; - tx_stop(info); - } - } - } - } - } - - info->pending_bh |= BH_STATUS; -} - -/* Interrupt service routine entry point. - * - * Arguments: - * irq interrupt number that caused interrupt - * dev_id device ID supplied during interrupt registration - * regs interrupted processor context - */ -static irqreturn_t synclinkmp_interrupt(int dummy, void *dev_id) -{ - SLMP_INFO *info = dev_id; - unsigned char status, status0, status1=0; - unsigned char dmastatus, dmastatus0, dmastatus1=0; - unsigned char timerstatus0, timerstatus1=0; - unsigned char shift; - unsigned int i; - unsigned short tmp; - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk(KERN_DEBUG "%s(%d): synclinkmp_interrupt(%d)entry.\n", - __FILE__, __LINE__, info->irq_level); - - spin_lock(&info->lock); - - for(;;) { - - /* get status for SCA0 (ports 0-1) */ - tmp = read_reg16(info, ISR0); /* get ISR0 and ISR1 in one read */ - status0 = (unsigned char)tmp; - dmastatus0 = (unsigned char)(tmp>>8); - timerstatus0 = read_reg(info, ISR2); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk(KERN_DEBUG "%s(%d):%s status0=%02x, dmastatus0=%02x, timerstatus0=%02x\n", - __FILE__, __LINE__, info->device_name, - status0, dmastatus0, timerstatus0); - - if (info->port_count == 4) { - /* get status for SCA1 (ports 2-3) */ - tmp = read_reg16(info->port_array[2], ISR0); - status1 = (unsigned char)tmp; - dmastatus1 = (unsigned char)(tmp>>8); - timerstatus1 = read_reg(info->port_array[2], ISR2); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s status1=%02x, dmastatus1=%02x, timerstatus1=%02x\n", - __FILE__,__LINE__,info->device_name, - status1,dmastatus1,timerstatus1); - } - - if (!status0 && !dmastatus0 && !timerstatus0 && - !status1 && !dmastatus1 && !timerstatus1) - break; - - for(i=0; i < info->port_count ; i++) { - if (info->port_array[i] == NULL) - continue; - if (i < 2) { - status = status0; - dmastatus = dmastatus0; - } else { - status = status1; - dmastatus = dmastatus1; - } - - shift = i & 1 ? 4 :0; - - if (status & BIT0 << shift) - isr_rxrdy(info->port_array[i]); - if (status & BIT1 << shift) - isr_txrdy(info->port_array[i]); - if (status & BIT2 << shift) - isr_rxint(info->port_array[i]); - if (status & BIT3 << shift) - isr_txint(info->port_array[i]); - - if (dmastatus & BIT0 << shift) - isr_rxdmaerror(info->port_array[i]); - if (dmastatus & BIT1 << shift) - isr_rxdmaok(info->port_array[i]); - if (dmastatus & BIT2 << shift) - isr_txdmaerror(info->port_array[i]); - if (dmastatus & BIT3 << shift) - isr_txdmaok(info->port_array[i]); - } - - if (timerstatus0 & (BIT5 | BIT4)) - isr_timer(info->port_array[0]); - if (timerstatus0 & (BIT7 | BIT6)) - isr_timer(info->port_array[1]); - if (timerstatus1 & (BIT5 | BIT4)) - isr_timer(info->port_array[2]); - if (timerstatus1 & (BIT7 | BIT6)) - isr_timer(info->port_array[3]); - } - - for(i=0; i < info->port_count ; i++) { - SLMP_INFO * port = info->port_array[i]; - - /* Request bottom half processing if there's something - * for it to do and the bh is not already running. - * - * Note: startup adapter diags require interrupts. - * do not request bottom half processing if the - * device is not open in a normal mode. - */ - if ( port && (port->port.count || port->netcount) && - port->pending_bh && !port->bh_running && - !port->bh_requested ) { - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk("%s(%d):%s queueing bh task.\n", - __FILE__,__LINE__,port->device_name); - schedule_work(&port->task); - port->bh_requested = true; - } - } - - spin_unlock(&info->lock); - - if ( debug_level >= DEBUG_LEVEL_ISR ) - printk(KERN_DEBUG "%s(%d):synclinkmp_interrupt(%d)exit.\n", - __FILE__, __LINE__, info->irq_level); - return IRQ_HANDLED; -} - -/* Initialize and start device. - */ -static int startup(SLMP_INFO * info) -{ - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("%s(%d):%s tx_releaseup()\n",__FILE__,__LINE__,info->device_name); - - if (info->port.flags & ASYNC_INITIALIZED) - return 0; - - if (!info->tx_buf) { - info->tx_buf = kmalloc(info->max_frame_size, GFP_KERNEL); - if (!info->tx_buf) { - printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n", - __FILE__,__LINE__,info->device_name); - return -ENOMEM; - } - } - - info->pending_bh = 0; - - memset(&info->icount, 0, sizeof(info->icount)); - - /* program hardware for current parameters */ - reset_port(info); - - change_params(info); - - mod_timer(&info->status_timer, jiffies + msecs_to_jiffies(10)); - - if (info->port.tty) - clear_bit(TTY_IO_ERROR, &info->port.tty->flags); - - info->port.flags |= ASYNC_INITIALIZED; - - return 0; -} - -/* Called by close() and hangup() to shutdown hardware - */ -static void shutdown(SLMP_INFO * info) -{ - unsigned long flags; - - if (!(info->port.flags & ASYNC_INITIALIZED)) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s synclinkmp_shutdown()\n", - __FILE__,__LINE__, info->device_name ); - - /* clear status wait queue because status changes */ - /* can't happen after shutting down the hardware */ - wake_up_interruptible(&info->status_event_wait_q); - wake_up_interruptible(&info->event_wait_q); - - del_timer(&info->tx_timer); - del_timer(&info->status_timer); - - kfree(info->tx_buf); - info->tx_buf = NULL; - - spin_lock_irqsave(&info->lock,flags); - - reset_port(info); - - if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) { - info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); - set_signals(info); - } - - spin_unlock_irqrestore(&info->lock,flags); - - if (info->port.tty) - set_bit(TTY_IO_ERROR, &info->port.tty->flags); - - info->port.flags &= ~ASYNC_INITIALIZED; -} - -static void program_hw(SLMP_INFO *info) -{ - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - - rx_stop(info); - tx_stop(info); - - info->tx_count = info->tx_put = info->tx_get = 0; - - if (info->params.mode == MGSL_MODE_HDLC || info->netcount) - hdlc_mode(info); - else - async_mode(info); - - set_signals(info); - - info->dcd_chkcount = 0; - info->cts_chkcount = 0; - info->ri_chkcount = 0; - info->dsr_chkcount = 0; - - info->ie1_value |= (CDCD|CCTS); - write_reg(info, IE1, info->ie1_value); - - get_signals(info); - - if (info->netcount || (info->port.tty && info->port.tty->termios->c_cflag & CREAD) ) - rx_start(info); - - spin_unlock_irqrestore(&info->lock,flags); -} - -/* Reconfigure adapter based on new parameters - */ -static void change_params(SLMP_INFO *info) -{ - unsigned cflag; - int bits_per_char; - - if (!info->port.tty || !info->port.tty->termios) - return; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s change_params()\n", - __FILE__,__LINE__, info->device_name ); - - cflag = info->port.tty->termios->c_cflag; - - /* if B0 rate (hangup) specified then negate DTR and RTS */ - /* otherwise assert DTR and RTS */ - if (cflag & CBAUD) - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - else - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - - /* byte size and parity */ - - switch (cflag & CSIZE) { - case CS5: info->params.data_bits = 5; break; - case CS6: info->params.data_bits = 6; break; - case CS7: info->params.data_bits = 7; break; - case CS8: info->params.data_bits = 8; break; - /* Never happens, but GCC is too dumb to figure it out */ - default: info->params.data_bits = 7; break; - } - - if (cflag & CSTOPB) - info->params.stop_bits = 2; - else - info->params.stop_bits = 1; - - info->params.parity = ASYNC_PARITY_NONE; - if (cflag & PARENB) { - if (cflag & PARODD) - info->params.parity = ASYNC_PARITY_ODD; - else - info->params.parity = ASYNC_PARITY_EVEN; -#ifdef CMSPAR - if (cflag & CMSPAR) - info->params.parity = ASYNC_PARITY_SPACE; -#endif - } - - /* calculate number of jiffies to transmit a full - * FIFO (32 bytes) at specified data rate - */ - bits_per_char = info->params.data_bits + - info->params.stop_bits + 1; - - /* if port data rate is set to 460800 or less then - * allow tty settings to override, otherwise keep the - * current data rate. - */ - if (info->params.data_rate <= 460800) { - info->params.data_rate = tty_get_baud_rate(info->port.tty); - } - - if ( info->params.data_rate ) { - info->timeout = (32*HZ*bits_per_char) / - info->params.data_rate; - } - info->timeout += HZ/50; /* Add .02 seconds of slop */ - - if (cflag & CRTSCTS) - info->port.flags |= ASYNC_CTS_FLOW; - else - info->port.flags &= ~ASYNC_CTS_FLOW; - - if (cflag & CLOCAL) - info->port.flags &= ~ASYNC_CHECK_CD; - else - info->port.flags |= ASYNC_CHECK_CD; - - /* process tty input control flags */ - - info->read_status_mask2 = OVRN; - if (I_INPCK(info->port.tty)) - info->read_status_mask2 |= PE | FRME; - if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) - info->read_status_mask1 |= BRKD; - if (I_IGNPAR(info->port.tty)) - info->ignore_status_mask2 |= PE | FRME; - if (I_IGNBRK(info->port.tty)) { - info->ignore_status_mask1 |= BRKD; - /* If ignoring parity and break indicators, ignore - * overruns too. (For real raw support). - */ - if (I_IGNPAR(info->port.tty)) - info->ignore_status_mask2 |= OVRN; - } - - program_hw(info); -} - -static int get_stats(SLMP_INFO * info, struct mgsl_icount __user *user_icount) -{ - int err; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s get_params()\n", - __FILE__,__LINE__, info->device_name); - - if (!user_icount) { - memset(&info->icount, 0, sizeof(info->icount)); - } else { - mutex_lock(&info->port.mutex); - COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount)); - mutex_unlock(&info->port.mutex); - if (err) - return -EFAULT; - } - - return 0; -} - -static int get_params(SLMP_INFO * info, MGSL_PARAMS __user *user_params) -{ - int err; - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s get_params()\n", - __FILE__,__LINE__, info->device_name); - - mutex_lock(&info->port.mutex); - COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS)); - mutex_unlock(&info->port.mutex); - if (err) { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s get_params() user buffer copy failed\n", - __FILE__,__LINE__,info->device_name); - return -EFAULT; - } - - return 0; -} - -static int set_params(SLMP_INFO * info, MGSL_PARAMS __user *new_params) -{ - unsigned long flags; - MGSL_PARAMS tmp_params; - int err; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s set_params\n", - __FILE__,__LINE__,info->device_name ); - COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS)); - if (err) { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s set_params() user buffer copy failed\n", - __FILE__,__LINE__,info->device_name); - return -EFAULT; - } - - mutex_lock(&info->port.mutex); - spin_lock_irqsave(&info->lock,flags); - memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); - spin_unlock_irqrestore(&info->lock,flags); - - change_params(info); - mutex_unlock(&info->port.mutex); - - return 0; -} - -static int get_txidle(SLMP_INFO * info, int __user *idle_mode) -{ - int err; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s get_txidle()=%d\n", - __FILE__,__LINE__, info->device_name, info->idle_mode); - - COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int)); - if (err) { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s get_txidle() user buffer copy failed\n", - __FILE__,__LINE__,info->device_name); - return -EFAULT; - } - - return 0; -} - -static int set_txidle(SLMP_INFO * info, int idle_mode) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s set_txidle(%d)\n", - __FILE__,__LINE__,info->device_name, idle_mode ); - - spin_lock_irqsave(&info->lock,flags); - info->idle_mode = idle_mode; - tx_set_idle( info ); - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -static int tx_enable(SLMP_INFO * info, int enable) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s tx_enable(%d)\n", - __FILE__,__LINE__,info->device_name, enable); - - spin_lock_irqsave(&info->lock,flags); - if ( enable ) { - if ( !info->tx_enabled ) { - tx_start(info); - } - } else { - if ( info->tx_enabled ) - tx_stop(info); - } - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -/* abort send HDLC frame - */ -static int tx_abort(SLMP_INFO * info) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s tx_abort()\n", - __FILE__,__LINE__,info->device_name); - - spin_lock_irqsave(&info->lock,flags); - if ( info->tx_active && info->params.mode == MGSL_MODE_HDLC ) { - info->ie1_value &= ~UDRN; - info->ie1_value |= IDLE; - write_reg(info, IE1, info->ie1_value); /* disable tx status interrupts */ - write_reg(info, SR1, (unsigned char)(IDLE + UDRN)); /* clear pending */ - - write_reg(info, TXDMA + DSR, 0); /* disable DMA channel */ - write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ - - write_reg(info, CMD, TXABORT); - } - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -static int rx_enable(SLMP_INFO * info, int enable) -{ - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s rx_enable(%d)\n", - __FILE__,__LINE__,info->device_name,enable); - - spin_lock_irqsave(&info->lock,flags); - if ( enable ) { - if ( !info->rx_enabled ) - rx_start(info); - } else { - if ( info->rx_enabled ) - rx_stop(info); - } - spin_unlock_irqrestore(&info->lock,flags); - return 0; -} - -/* wait for specified event to occur - */ -static int wait_mgsl_event(SLMP_INFO * info, int __user *mask_ptr) -{ - unsigned long flags; - int s; - int rc=0; - struct mgsl_icount cprev, cnow; - int events; - int mask; - struct _input_signal_events oldsigs, newsigs; - DECLARE_WAITQUEUE(wait, current); - - COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int)); - if (rc) { - return -EFAULT; - } - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s wait_mgsl_event(%d)\n", - __FILE__,__LINE__,info->device_name,mask); - - spin_lock_irqsave(&info->lock,flags); - - /* return immediately if state matches requested events */ - get_signals(info); - s = info->serial_signals; - - events = mask & - ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + - ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + - ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + - ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); - if (events) { - spin_unlock_irqrestore(&info->lock,flags); - goto exit; - } - - /* save current irq counts */ - cprev = info->icount; - oldsigs = info->input_signal_events; - - /* enable hunt and idle irqs if needed */ - if (mask & (MgslEvent_ExitHuntMode+MgslEvent_IdleReceived)) { - unsigned char oldval = info->ie1_value; - unsigned char newval = oldval + - (mask & MgslEvent_ExitHuntMode ? FLGD:0) + - (mask & MgslEvent_IdleReceived ? IDLD:0); - if ( oldval != newval ) { - info->ie1_value = newval; - write_reg(info, IE1, info->ie1_value); - } - } - - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&info->event_wait_q, &wait); - - spin_unlock_irqrestore(&info->lock,flags); - - for(;;) { - schedule(); - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - - /* get current irq counts */ - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - newsigs = info->input_signal_events; - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); - - /* if no change, wait aborted for some reason */ - if (newsigs.dsr_up == oldsigs.dsr_up && - newsigs.dsr_down == oldsigs.dsr_down && - newsigs.dcd_up == oldsigs.dcd_up && - newsigs.dcd_down == oldsigs.dcd_down && - newsigs.cts_up == oldsigs.cts_up && - newsigs.cts_down == oldsigs.cts_down && - newsigs.ri_up == oldsigs.ri_up && - newsigs.ri_down == oldsigs.ri_down && - cnow.exithunt == cprev.exithunt && - cnow.rxidle == cprev.rxidle) { - rc = -EIO; - break; - } - - events = mask & - ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + - (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + - (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + - (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + - (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + - (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + - (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + - (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + - (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + - (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); - if (events) - break; - - cprev = cnow; - oldsigs = newsigs; - } - - remove_wait_queue(&info->event_wait_q, &wait); - set_current_state(TASK_RUNNING); - - - if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { - spin_lock_irqsave(&info->lock,flags); - if (!waitqueue_active(&info->event_wait_q)) { - /* disable enable exit hunt mode/idle rcvd IRQs */ - info->ie1_value &= ~(FLGD|IDLD); - write_reg(info, IE1, info->ie1_value); - } - spin_unlock_irqrestore(&info->lock,flags); - } -exit: - if ( rc == 0 ) - PUT_USER(rc, events, mask_ptr); - - return rc; -} - -static int modem_input_wait(SLMP_INFO *info,int arg) -{ - unsigned long flags; - int rc; - struct mgsl_icount cprev, cnow; - DECLARE_WAITQUEUE(wait, current); - - /* save current irq counts */ - spin_lock_irqsave(&info->lock,flags); - cprev = info->icount; - add_wait_queue(&info->status_event_wait_q, &wait); - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); - - for(;;) { - schedule(); - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - - /* get new irq counts */ - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); - - /* if no change, wait aborted for some reason */ - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { - rc = -EIO; - break; - } - - /* check for change in caller specified modem input */ - if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || - (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || - (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || - (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { - rc = 0; - break; - } - - cprev = cnow; - } - remove_wait_queue(&info->status_event_wait_q, &wait); - set_current_state(TASK_RUNNING); - return rc; -} - -/* return the state of the serial control and status signals - */ -static int tiocmget(struct tty_struct *tty) -{ - SLMP_INFO *info = tty->driver_data; - unsigned int result; - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - - result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) + - ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) + - ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) + - ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) + - ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) + - ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0); - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s tiocmget() value=%08X\n", - __FILE__,__LINE__, info->device_name, result ); - return result; -} - -/* set modem control signals (DTR/RTS) - */ -static int tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - SLMP_INFO *info = tty->driver_data; - unsigned long flags; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s tiocmset(%x,%x)\n", - __FILE__,__LINE__,info->device_name, set, clear); - - if (set & TIOCM_RTS) - info->serial_signals |= SerialSignal_RTS; - if (set & TIOCM_DTR) - info->serial_signals |= SerialSignal_DTR; - if (clear & TIOCM_RTS) - info->serial_signals &= ~SerialSignal_RTS; - if (clear & TIOCM_DTR) - info->serial_signals &= ~SerialSignal_DTR; - - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - - return 0; -} - -static int carrier_raised(struct tty_port *port) -{ - SLMP_INFO *info = container_of(port, SLMP_INFO, port); - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - - return (info->serial_signals & SerialSignal_DCD) ? 1 : 0; -} - -static void dtr_rts(struct tty_port *port, int on) -{ - SLMP_INFO *info = container_of(port, SLMP_INFO, port); - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - if (on) - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - else - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); -} - -/* Block the current process until the specified port is ready to open. - */ -static int block_til_ready(struct tty_struct *tty, struct file *filp, - SLMP_INFO *info) -{ - DECLARE_WAITQUEUE(wait, current); - int retval; - bool do_clocal = false; - bool extra_count = false; - unsigned long flags; - int cd; - struct tty_port *port = &info->port; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready()\n", - __FILE__,__LINE__, tty->driver->name ); - - if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ - /* nonblock mode is set or port is not enabled */ - /* just verify that callout device is not active */ - port->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - if (tty->termios->c_cflag & CLOCAL) - do_clocal = true; - - /* Wait for carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, port->count is dropped by one, so that - * close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - - retval = 0; - add_wait_queue(&port->open_wait, &wait); - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready() before block, count=%d\n", - __FILE__,__LINE__, tty->driver->name, port->count ); - - spin_lock_irqsave(&info->lock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = true; - port->count--; - } - spin_unlock_irqrestore(&info->lock, flags); - port->blocked_open++; - - while (1) { - if (tty->termios->c_cflag & CBAUD) - tty_port_raise_dtr_rts(port); - - set_current_state(TASK_INTERRUPTIBLE); - - if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){ - retval = (port->flags & ASYNC_HUP_NOTIFY) ? - -EAGAIN : -ERESTARTSYS; - break; - } - - cd = tty_port_carrier_raised(port); - - if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd)) - break; - - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready() count=%d\n", - __FILE__,__LINE__, tty->driver->name, port->count ); - - tty_unlock(); - schedule(); - tty_lock(); - } - - set_current_state(TASK_RUNNING); - remove_wait_queue(&port->open_wait, &wait); - - if (extra_count) - port->count++; - port->blocked_open--; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):%s block_til_ready() after, count=%d\n", - __FILE__,__LINE__, tty->driver->name, port->count ); - - if (!retval) - port->flags |= ASYNC_NORMAL_ACTIVE; - - return retval; -} - -static int alloc_dma_bufs(SLMP_INFO *info) -{ - unsigned short BuffersPerFrame; - unsigned short BufferCount; - - // Force allocation to start at 64K boundary for each port. - // This is necessary because *all* buffer descriptors for a port - // *must* be in the same 64K block. All descriptors on a port - // share a common 'base' address (upper 8 bits of 24 bits) programmed - // into the CBP register. - info->port_array[0]->last_mem_alloc = (SCA_MEM_SIZE/4) * info->port_num; - - /* Calculate the number of DMA buffers necessary to hold the */ - /* largest allowable frame size. Note: If the max frame size is */ - /* not an even multiple of the DMA buffer size then we need to */ - /* round the buffer count per frame up one. */ - - BuffersPerFrame = (unsigned short)(info->max_frame_size/SCABUFSIZE); - if ( info->max_frame_size % SCABUFSIZE ) - BuffersPerFrame++; - - /* calculate total number of data buffers (SCABUFSIZE) possible - * in one ports memory (SCA_MEM_SIZE/4) after allocating memory - * for the descriptor list (BUFFERLISTSIZE). - */ - BufferCount = (SCA_MEM_SIZE/4 - BUFFERLISTSIZE)/SCABUFSIZE; - - /* limit number of buffers to maximum amount of descriptors */ - if (BufferCount > BUFFERLISTSIZE/sizeof(SCADESC)) - BufferCount = BUFFERLISTSIZE/sizeof(SCADESC); - - /* use enough buffers to transmit one max size frame */ - info->tx_buf_count = BuffersPerFrame + 1; - - /* never use more than half the available buffers for transmit */ - if (info->tx_buf_count > (BufferCount/2)) - info->tx_buf_count = BufferCount/2; - - if (info->tx_buf_count > SCAMAXDESC) - info->tx_buf_count = SCAMAXDESC; - - /* use remaining buffers for receive */ - info->rx_buf_count = BufferCount - info->tx_buf_count; - - if (info->rx_buf_count > SCAMAXDESC) - info->rx_buf_count = SCAMAXDESC; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk("%s(%d):%s Allocating %d TX and %d RX DMA buffers.\n", - __FILE__,__LINE__, info->device_name, - info->tx_buf_count,info->rx_buf_count); - - if ( alloc_buf_list( info ) < 0 || - alloc_frame_bufs(info, - info->rx_buf_list, - info->rx_buf_list_ex, - info->rx_buf_count) < 0 || - alloc_frame_bufs(info, - info->tx_buf_list, - info->tx_buf_list_ex, - info->tx_buf_count) < 0 || - alloc_tmp_rx_buf(info) < 0 ) { - printk("%s(%d):%s Can't allocate DMA buffer memory\n", - __FILE__,__LINE__, info->device_name); - return -ENOMEM; - } - - rx_reset_buffers( info ); - - return 0; -} - -/* Allocate DMA buffers for the transmit and receive descriptor lists. - */ -static int alloc_buf_list(SLMP_INFO *info) -{ - unsigned int i; - - /* build list in adapter shared memory */ - info->buffer_list = info->memory_base + info->port_array[0]->last_mem_alloc; - info->buffer_list_phys = info->port_array[0]->last_mem_alloc; - info->port_array[0]->last_mem_alloc += BUFFERLISTSIZE; - - memset(info->buffer_list, 0, BUFFERLISTSIZE); - - /* Save virtual address pointers to the receive and */ - /* transmit buffer lists. (Receive 1st). These pointers will */ - /* be used by the processor to access the lists. */ - info->rx_buf_list = (SCADESC *)info->buffer_list; - - info->tx_buf_list = (SCADESC *)info->buffer_list; - info->tx_buf_list += info->rx_buf_count; - - /* Build links for circular buffer entry lists (tx and rx) - * - * Note: links are physical addresses read by the SCA device - * to determine the next buffer entry to use. - */ - - for ( i = 0; i < info->rx_buf_count; i++ ) { - /* calculate and store physical address of this buffer entry */ - info->rx_buf_list_ex[i].phys_entry = - info->buffer_list_phys + (i * sizeof(SCABUFSIZE)); - - /* calculate and store physical address of */ - /* next entry in cirular list of entries */ - info->rx_buf_list[i].next = info->buffer_list_phys; - if ( i < info->rx_buf_count - 1 ) - info->rx_buf_list[i].next += (i + 1) * sizeof(SCADESC); - - info->rx_buf_list[i].length = SCABUFSIZE; - } - - for ( i = 0; i < info->tx_buf_count; i++ ) { - /* calculate and store physical address of this buffer entry */ - info->tx_buf_list_ex[i].phys_entry = info->buffer_list_phys + - ((info->rx_buf_count + i) * sizeof(SCADESC)); - - /* calculate and store physical address of */ - /* next entry in cirular list of entries */ - - info->tx_buf_list[i].next = info->buffer_list_phys + - info->rx_buf_count * sizeof(SCADESC); - - if ( i < info->tx_buf_count - 1 ) - info->tx_buf_list[i].next += (i + 1) * sizeof(SCADESC); - } - - return 0; -} - -/* Allocate the frame DMA buffers used by the specified buffer list. - */ -static int alloc_frame_bufs(SLMP_INFO *info, SCADESC *buf_list,SCADESC_EX *buf_list_ex,int count) -{ - int i; - unsigned long phys_addr; - - for ( i = 0; i < count; i++ ) { - buf_list_ex[i].virt_addr = info->memory_base + info->port_array[0]->last_mem_alloc; - phys_addr = info->port_array[0]->last_mem_alloc; - info->port_array[0]->last_mem_alloc += SCABUFSIZE; - - buf_list[i].buf_ptr = (unsigned short)phys_addr; - buf_list[i].buf_base = (unsigned char)(phys_addr >> 16); - } - - return 0; -} - -static void free_dma_bufs(SLMP_INFO *info) -{ - info->buffer_list = NULL; - info->rx_buf_list = NULL; - info->tx_buf_list = NULL; -} - -/* allocate buffer large enough to hold max_frame_size. - * This buffer is used to pass an assembled frame to the line discipline. - */ -static int alloc_tmp_rx_buf(SLMP_INFO *info) -{ - info->tmp_rx_buf = kmalloc(info->max_frame_size, GFP_KERNEL); - if (info->tmp_rx_buf == NULL) - return -ENOMEM; - return 0; -} - -static void free_tmp_rx_buf(SLMP_INFO *info) -{ - kfree(info->tmp_rx_buf); - info->tmp_rx_buf = NULL; -} - -static int claim_resources(SLMP_INFO *info) -{ - if (request_mem_region(info->phys_memory_base,SCA_MEM_SIZE,"synclinkmp") == NULL) { - printk( "%s(%d):%s mem addr conflict, Addr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_memory_base); - info->init_error = DiagStatus_AddressConflict; - goto errout; - } - else - info->shared_mem_requested = true; - - if (request_mem_region(info->phys_lcr_base + info->lcr_offset,128,"synclinkmp") == NULL) { - printk( "%s(%d):%s lcr mem addr conflict, Addr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_lcr_base); - info->init_error = DiagStatus_AddressConflict; - goto errout; - } - else - info->lcr_mem_requested = true; - - if (request_mem_region(info->phys_sca_base + info->sca_offset,SCA_BASE_SIZE,"synclinkmp") == NULL) { - printk( "%s(%d):%s sca mem addr conflict, Addr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_sca_base); - info->init_error = DiagStatus_AddressConflict; - goto errout; - } - else - info->sca_base_requested = true; - - if (request_mem_region(info->phys_statctrl_base + info->statctrl_offset,SCA_REG_SIZE,"synclinkmp") == NULL) { - printk( "%s(%d):%s stat/ctrl mem addr conflict, Addr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_statctrl_base); - info->init_error = DiagStatus_AddressConflict; - goto errout; - } - else - info->sca_statctrl_requested = true; - - info->memory_base = ioremap_nocache(info->phys_memory_base, - SCA_MEM_SIZE); - if (!info->memory_base) { - printk( "%s(%d):%s Cant map shared memory, MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_memory_base ); - info->init_error = DiagStatus_CantAssignPciResources; - goto errout; - } - - info->lcr_base = ioremap_nocache(info->phys_lcr_base, PAGE_SIZE); - if (!info->lcr_base) { - printk( "%s(%d):%s Cant map LCR memory, MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_lcr_base ); - info->init_error = DiagStatus_CantAssignPciResources; - goto errout; - } - info->lcr_base += info->lcr_offset; - - info->sca_base = ioremap_nocache(info->phys_sca_base, PAGE_SIZE); - if (!info->sca_base) { - printk( "%s(%d):%s Cant map SCA memory, MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_sca_base ); - info->init_error = DiagStatus_CantAssignPciResources; - goto errout; - } - info->sca_base += info->sca_offset; - - info->statctrl_base = ioremap_nocache(info->phys_statctrl_base, - PAGE_SIZE); - if (!info->statctrl_base) { - printk( "%s(%d):%s Cant map SCA Status/Control memory, MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_statctrl_base ); - info->init_error = DiagStatus_CantAssignPciResources; - goto errout; - } - info->statctrl_base += info->statctrl_offset; - - if ( !memory_test(info) ) { - printk( "%s(%d):Shared Memory Test failed for device %s MemAddr=%08X\n", - __FILE__,__LINE__,info->device_name, info->phys_memory_base ); - info->init_error = DiagStatus_MemoryError; - goto errout; - } - - return 0; - -errout: - release_resources( info ); - return -ENODEV; -} - -static void release_resources(SLMP_INFO *info) -{ - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s release_resources() entry\n", - __FILE__,__LINE__,info->device_name ); - - if ( info->irq_requested ) { - free_irq(info->irq_level, info); - info->irq_requested = false; - } - - if ( info->shared_mem_requested ) { - release_mem_region(info->phys_memory_base,SCA_MEM_SIZE); - info->shared_mem_requested = false; - } - if ( info->lcr_mem_requested ) { - release_mem_region(info->phys_lcr_base + info->lcr_offset,128); - info->lcr_mem_requested = false; - } - if ( info->sca_base_requested ) { - release_mem_region(info->phys_sca_base + info->sca_offset,SCA_BASE_SIZE); - info->sca_base_requested = false; - } - if ( info->sca_statctrl_requested ) { - release_mem_region(info->phys_statctrl_base + info->statctrl_offset,SCA_REG_SIZE); - info->sca_statctrl_requested = false; - } - - if (info->memory_base){ - iounmap(info->memory_base); - info->memory_base = NULL; - } - - if (info->sca_base) { - iounmap(info->sca_base - info->sca_offset); - info->sca_base=NULL; - } - - if (info->statctrl_base) { - iounmap(info->statctrl_base - info->statctrl_offset); - info->statctrl_base=NULL; - } - - if (info->lcr_base){ - iounmap(info->lcr_base - info->lcr_offset); - info->lcr_base = NULL; - } - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s release_resources() exit\n", - __FILE__,__LINE__,info->device_name ); -} - -/* Add the specified device instance data structure to the - * global linked list of devices and increment the device count. - */ -static void add_device(SLMP_INFO *info) -{ - info->next_device = NULL; - info->line = synclinkmp_device_count; - sprintf(info->device_name,"ttySLM%dp%d",info->adapter_num,info->port_num); - - if (info->line < MAX_DEVICES) { - if (maxframe[info->line]) - info->max_frame_size = maxframe[info->line]; - } - - synclinkmp_device_count++; - - if ( !synclinkmp_device_list ) - synclinkmp_device_list = info; - else { - SLMP_INFO *current_dev = synclinkmp_device_list; - while( current_dev->next_device ) - current_dev = current_dev->next_device; - current_dev->next_device = info; - } - - if ( info->max_frame_size < 4096 ) - info->max_frame_size = 4096; - else if ( info->max_frame_size > 65535 ) - info->max_frame_size = 65535; - - printk( "SyncLink MultiPort %s: " - "Mem=(%08x %08X %08x %08X) IRQ=%d MaxFrameSize=%u\n", - info->device_name, - info->phys_sca_base, - info->phys_memory_base, - info->phys_statctrl_base, - info->phys_lcr_base, - info->irq_level, - info->max_frame_size ); - -#if SYNCLINK_GENERIC_HDLC - hdlcdev_init(info); -#endif -} - -static const struct tty_port_operations port_ops = { - .carrier_raised = carrier_raised, - .dtr_rts = dtr_rts, -}; - -/* Allocate and initialize a device instance structure - * - * Return Value: pointer to SLMP_INFO if success, otherwise NULL - */ -static SLMP_INFO *alloc_dev(int adapter_num, int port_num, struct pci_dev *pdev) -{ - SLMP_INFO *info; - - info = kzalloc(sizeof(SLMP_INFO), - GFP_KERNEL); - - if (!info) { - printk("%s(%d) Error can't allocate device instance data for adapter %d, port %d\n", - __FILE__,__LINE__, adapter_num, port_num); - } else { - tty_port_init(&info->port); - info->port.ops = &port_ops; - info->magic = MGSL_MAGIC; - INIT_WORK(&info->task, bh_handler); - info->max_frame_size = 4096; - info->port.close_delay = 5*HZ/10; - info->port.closing_wait = 30*HZ; - init_waitqueue_head(&info->status_event_wait_q); - init_waitqueue_head(&info->event_wait_q); - spin_lock_init(&info->netlock); - memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); - info->idle_mode = HDLC_TXIDLE_FLAGS; - info->adapter_num = adapter_num; - info->port_num = port_num; - - /* Copy configuration info to device instance data */ - info->irq_level = pdev->irq; - info->phys_lcr_base = pci_resource_start(pdev,0); - info->phys_sca_base = pci_resource_start(pdev,2); - info->phys_memory_base = pci_resource_start(pdev,3); - info->phys_statctrl_base = pci_resource_start(pdev,4); - - /* Because veremap only works on page boundaries we must map - * a larger area than is actually implemented for the LCR - * memory range. We map a full page starting at the page boundary. - */ - info->lcr_offset = info->phys_lcr_base & (PAGE_SIZE-1); - info->phys_lcr_base &= ~(PAGE_SIZE-1); - - info->sca_offset = info->phys_sca_base & (PAGE_SIZE-1); - info->phys_sca_base &= ~(PAGE_SIZE-1); - - info->statctrl_offset = info->phys_statctrl_base & (PAGE_SIZE-1); - info->phys_statctrl_base &= ~(PAGE_SIZE-1); - - info->bus_type = MGSL_BUS_TYPE_PCI; - info->irq_flags = IRQF_SHARED; - - setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info); - setup_timer(&info->status_timer, status_timeout, - (unsigned long)info); - - /* Store the PCI9050 misc control register value because a flaw - * in the PCI9050 prevents LCR registers from being read if - * BIOS assigns an LCR base address with bit 7 set. - * - * Only the misc control register is accessed for which only - * write access is needed, so set an initial value and change - * bits to the device instance data as we write the value - * to the actual misc control register. - */ - info->misc_ctrl_value = 0x087e4546; - - /* initial port state is unknown - if startup errors - * occur, init_error will be set to indicate the - * problem. Once the port is fully initialized, - * this value will be set to 0 to indicate the - * port is available. - */ - info->init_error = -1; - } - - return info; -} - -static void device_init(int adapter_num, struct pci_dev *pdev) -{ - SLMP_INFO *port_array[SCA_MAX_PORTS]; - int port; - - /* allocate device instances for up to SCA_MAX_PORTS devices */ - for ( port = 0; port < SCA_MAX_PORTS; ++port ) { - port_array[port] = alloc_dev(adapter_num,port,pdev); - if( port_array[port] == NULL ) { - for ( --port; port >= 0; --port ) - kfree(port_array[port]); - return; - } - } - - /* give copy of port_array to all ports and add to device list */ - for ( port = 0; port < SCA_MAX_PORTS; ++port ) { - memcpy(port_array[port]->port_array,port_array,sizeof(port_array)); - add_device( port_array[port] ); - spin_lock_init(&port_array[port]->lock); - } - - /* Allocate and claim adapter resources */ - if ( !claim_resources(port_array[0]) ) { - - alloc_dma_bufs(port_array[0]); - - /* copy resource information from first port to others */ - for ( port = 1; port < SCA_MAX_PORTS; ++port ) { - port_array[port]->lock = port_array[0]->lock; - port_array[port]->irq_level = port_array[0]->irq_level; - port_array[port]->memory_base = port_array[0]->memory_base; - port_array[port]->sca_base = port_array[0]->sca_base; - port_array[port]->statctrl_base = port_array[0]->statctrl_base; - port_array[port]->lcr_base = port_array[0]->lcr_base; - alloc_dma_bufs(port_array[port]); - } - - if ( request_irq(port_array[0]->irq_level, - synclinkmp_interrupt, - port_array[0]->irq_flags, - port_array[0]->device_name, - port_array[0]) < 0 ) { - printk( "%s(%d):%s Cant request interrupt, IRQ=%d\n", - __FILE__,__LINE__, - port_array[0]->device_name, - port_array[0]->irq_level ); - } - else { - port_array[0]->irq_requested = true; - adapter_test(port_array[0]); - } - } -} - -static const struct tty_operations ops = { - .open = open, - .close = close, - .write = write, - .put_char = put_char, - .flush_chars = flush_chars, - .write_room = write_room, - .chars_in_buffer = chars_in_buffer, - .flush_buffer = flush_buffer, - .ioctl = ioctl, - .throttle = throttle, - .unthrottle = unthrottle, - .send_xchar = send_xchar, - .break_ctl = set_break, - .wait_until_sent = wait_until_sent, - .set_termios = set_termios, - .stop = tx_hold, - .start = tx_release, - .hangup = hangup, - .tiocmget = tiocmget, - .tiocmset = tiocmset, - .get_icount = get_icount, - .proc_fops = &synclinkmp_proc_fops, -}; - - -static void synclinkmp_cleanup(void) -{ - int rc; - SLMP_INFO *info; - SLMP_INFO *tmp; - - printk("Unloading %s %s\n", driver_name, driver_version); - - if (serial_driver) { - if ((rc = tty_unregister_driver(serial_driver))) - printk("%s(%d) failed to unregister tty driver err=%d\n", - __FILE__,__LINE__,rc); - put_tty_driver(serial_driver); - } - - /* reset devices */ - info = synclinkmp_device_list; - while(info) { - reset_port(info); - info = info->next_device; - } - - /* release devices */ - info = synclinkmp_device_list; - while(info) { -#if SYNCLINK_GENERIC_HDLC - hdlcdev_exit(info); -#endif - free_dma_bufs(info); - free_tmp_rx_buf(info); - if ( info->port_num == 0 ) { - if (info->sca_base) - write_reg(info, LPR, 1); /* set low power mode */ - release_resources(info); - } - tmp = info; - info = info->next_device; - kfree(tmp); - } - - pci_unregister_driver(&synclinkmp_pci_driver); -} - -/* Driver initialization entry point. - */ - -static int __init synclinkmp_init(void) -{ - int rc; - - if (break_on_load) { - synclinkmp_get_text_ptr(); - BREAKPOINT(); - } - - printk("%s %s\n", driver_name, driver_version); - - if ((rc = pci_register_driver(&synclinkmp_pci_driver)) < 0) { - printk("%s:failed to register PCI driver, error=%d\n",__FILE__,rc); - return rc; - } - - serial_driver = alloc_tty_driver(128); - if (!serial_driver) { - rc = -ENOMEM; - goto error; - } - - /* Initialize the tty_driver structure */ - - serial_driver->owner = THIS_MODULE; - serial_driver->driver_name = "synclinkmp"; - serial_driver->name = "ttySLM"; - serial_driver->major = ttymajor; - serial_driver->minor_start = 64; - serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - serial_driver->subtype = SERIAL_TYPE_NORMAL; - serial_driver->init_termios = tty_std_termios; - serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - serial_driver->init_termios.c_ispeed = 9600; - serial_driver->init_termios.c_ospeed = 9600; - serial_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(serial_driver, &ops); - if ((rc = tty_register_driver(serial_driver)) < 0) { - printk("%s(%d):Couldn't register serial driver\n", - __FILE__,__LINE__); - put_tty_driver(serial_driver); - serial_driver = NULL; - goto error; - } - - printk("%s %s, tty major#%d\n", - driver_name, driver_version, - serial_driver->major); - - return 0; - -error: - synclinkmp_cleanup(); - return rc; -} - -static void __exit synclinkmp_exit(void) -{ - synclinkmp_cleanup(); -} - -module_init(synclinkmp_init); -module_exit(synclinkmp_exit); - -/* Set the port for internal loopback mode. - * The TxCLK and RxCLK signals are generated from the BRG and - * the TxD is looped back to the RxD internally. - */ -static void enable_loopback(SLMP_INFO *info, int enable) -{ - if (enable) { - /* MD2 (Mode Register 2) - * 01..00 CNCT<1..0> Channel Connection 11=Local Loopback - */ - write_reg(info, MD2, (unsigned char)(read_reg(info, MD2) | (BIT1 + BIT0))); - - /* degate external TxC clock source */ - info->port_array[0]->ctrlreg_value |= (BIT0 << (info->port_num * 2)); - write_control_reg(info); - - /* RXS/TXS (Rx/Tx clock source) - * 07 Reserved, must be 0 - * 06..04 Clock Source, 100=BRG - * 03..00 Clock Divisor, 0000=1 - */ - write_reg(info, RXS, 0x40); - write_reg(info, TXS, 0x40); - - } else { - /* MD2 (Mode Register 2) - * 01..00 CNCT<1..0> Channel connection, 0=normal - */ - write_reg(info, MD2, (unsigned char)(read_reg(info, MD2) & ~(BIT1 + BIT0))); - - /* RXS/TXS (Rx/Tx clock source) - * 07 Reserved, must be 0 - * 06..04 Clock Source, 000=RxC/TxC Pin - * 03..00 Clock Divisor, 0000=1 - */ - write_reg(info, RXS, 0x00); - write_reg(info, TXS, 0x00); - } - - /* set LinkSpeed if available, otherwise default to 2Mbps */ - if (info->params.clock_speed) - set_rate(info, info->params.clock_speed); - else - set_rate(info, 3686400); -} - -/* Set the baud rate register to the desired speed - * - * data_rate data rate of clock in bits per second - * A data rate of 0 disables the AUX clock. - */ -static void set_rate( SLMP_INFO *info, u32 data_rate ) -{ - u32 TMCValue; - unsigned char BRValue; - u32 Divisor=0; - - /* fBRG = fCLK/(TMC * 2^BR) - */ - if (data_rate != 0) { - Divisor = 14745600/data_rate; - if (!Divisor) - Divisor = 1; - - TMCValue = Divisor; - - BRValue = 0; - if (TMCValue != 1 && TMCValue != 2) { - /* BRValue of 0 provides 50/50 duty cycle *only* when - * TMCValue is 1 or 2. BRValue of 1 to 9 always provides - * 50/50 duty cycle. - */ - BRValue = 1; - TMCValue >>= 1; - } - - /* while TMCValue is too big for TMC register, divide - * by 2 and increment BR exponent. - */ - for(; TMCValue > 256 && BRValue < 10; BRValue++) - TMCValue >>= 1; - - write_reg(info, TXS, - (unsigned char)((read_reg(info, TXS) & 0xf0) | BRValue)); - write_reg(info, RXS, - (unsigned char)((read_reg(info, RXS) & 0xf0) | BRValue)); - write_reg(info, TMC, (unsigned char)TMCValue); - } - else { - write_reg(info, TXS,0); - write_reg(info, RXS,0); - write_reg(info, TMC, 0); - } -} - -/* Disable receiver - */ -static void rx_stop(SLMP_INFO *info) -{ - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):%s rx_stop()\n", - __FILE__,__LINE__, info->device_name ); - - write_reg(info, CMD, RXRESET); - - info->ie0_value &= ~RXRDYE; - write_reg(info, IE0, info->ie0_value); /* disable Rx data interrupts */ - - write_reg(info, RXDMA + DSR, 0); /* disable Rx DMA */ - write_reg(info, RXDMA + DCMD, SWABORT); /* reset/init Rx DMA */ - write_reg(info, RXDMA + DIR, 0); /* disable Rx DMA interrupts */ - - info->rx_enabled = false; - info->rx_overflow = false; -} - -/* enable the receiver - */ -static void rx_start(SLMP_INFO *info) -{ - int i; - - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):%s rx_start()\n", - __FILE__,__LINE__, info->device_name ); - - write_reg(info, CMD, RXRESET); - - if ( info->params.mode == MGSL_MODE_HDLC ) { - /* HDLC, disabe IRQ on rxdata */ - info->ie0_value &= ~RXRDYE; - write_reg(info, IE0, info->ie0_value); - - /* Reset all Rx DMA buffers and program rx dma */ - write_reg(info, RXDMA + DSR, 0); /* disable Rx DMA */ - write_reg(info, RXDMA + DCMD, SWABORT); /* reset/init Rx DMA */ - - for (i = 0; i < info->rx_buf_count; i++) { - info->rx_buf_list[i].status = 0xff; - - // throttle to 4 shared memory writes at a time to prevent - // hogging local bus (keep latency time for DMA requests low). - if (!(i % 4)) - read_status_reg(info); - } - info->current_rx_buf = 0; - - /* set current/1st descriptor address */ - write_reg16(info, RXDMA + CDA, - info->rx_buf_list_ex[0].phys_entry); - - /* set new last rx descriptor address */ - write_reg16(info, RXDMA + EDA, - info->rx_buf_list_ex[info->rx_buf_count - 1].phys_entry); - - /* set buffer length (shared by all rx dma data buffers) */ - write_reg16(info, RXDMA + BFL, SCABUFSIZE); - - write_reg(info, RXDMA + DIR, 0x60); /* enable Rx DMA interrupts (EOM/BOF) */ - write_reg(info, RXDMA + DSR, 0xf2); /* clear Rx DMA IRQs, enable Rx DMA */ - } else { - /* async, enable IRQ on rxdata */ - info->ie0_value |= RXRDYE; - write_reg(info, IE0, info->ie0_value); - } - - write_reg(info, CMD, RXENABLE); - - info->rx_overflow = false; - info->rx_enabled = true; -} - -/* Enable the transmitter and send a transmit frame if - * one is loaded in the DMA buffers. - */ -static void tx_start(SLMP_INFO *info) -{ - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):%s tx_start() tx_count=%d\n", - __FILE__,__LINE__, info->device_name,info->tx_count ); - - if (!info->tx_enabled ) { - write_reg(info, CMD, TXRESET); - write_reg(info, CMD, TXENABLE); - info->tx_enabled = true; - } - - if ( info->tx_count ) { - - /* If auto RTS enabled and RTS is inactive, then assert */ - /* RTS and set a flag indicating that the driver should */ - /* negate RTS when the transmission completes. */ - - info->drop_rts_on_tx_done = false; - - if (info->params.mode != MGSL_MODE_ASYNC) { - - if ( info->params.flags & HDLC_FLAG_AUTO_RTS ) { - get_signals( info ); - if ( !(info->serial_signals & SerialSignal_RTS) ) { - info->serial_signals |= SerialSignal_RTS; - set_signals( info ); - info->drop_rts_on_tx_done = true; - } - } - - write_reg16(info, TRC0, - (unsigned short)(((tx_negate_fifo_level-1)<<8) + tx_active_fifo_level)); - - write_reg(info, TXDMA + DSR, 0); /* disable DMA channel */ - write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ - - /* set TX CDA (current descriptor address) */ - write_reg16(info, TXDMA + CDA, - info->tx_buf_list_ex[0].phys_entry); - - /* set TX EDA (last descriptor address) */ - write_reg16(info, TXDMA + EDA, - info->tx_buf_list_ex[info->last_tx_buf].phys_entry); - - /* enable underrun IRQ */ - info->ie1_value &= ~IDLE; - info->ie1_value |= UDRN; - write_reg(info, IE1, info->ie1_value); - write_reg(info, SR1, (unsigned char)(IDLE + UDRN)); - - write_reg(info, TXDMA + DIR, 0x40); /* enable Tx DMA interrupts (EOM) */ - write_reg(info, TXDMA + DSR, 0xf2); /* clear Tx DMA IRQs, enable Tx DMA */ - - mod_timer(&info->tx_timer, jiffies + - msecs_to_jiffies(5000)); - } - else { - tx_load_fifo(info); - /* async, enable IRQ on txdata */ - info->ie0_value |= TXRDYE; - write_reg(info, IE0, info->ie0_value); - } - - info->tx_active = true; - } -} - -/* stop the transmitter and DMA - */ -static void tx_stop( SLMP_INFO *info ) -{ - if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):%s tx_stop()\n", - __FILE__,__LINE__, info->device_name ); - - del_timer(&info->tx_timer); - - write_reg(info, TXDMA + DSR, 0); /* disable DMA channel */ - write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ - - write_reg(info, CMD, TXRESET); - - info->ie1_value &= ~(UDRN + IDLE); - write_reg(info, IE1, info->ie1_value); /* disable tx status interrupts */ - write_reg(info, SR1, (unsigned char)(IDLE + UDRN)); /* clear pending */ - - info->ie0_value &= ~TXRDYE; - write_reg(info, IE0, info->ie0_value); /* disable tx data interrupts */ - - info->tx_enabled = false; - info->tx_active = false; -} - -/* Fill the transmit FIFO until the FIFO is full or - * there is no more data to load. - */ -static void tx_load_fifo(SLMP_INFO *info) -{ - u8 TwoBytes[2]; - - /* do nothing is now tx data available and no XON/XOFF pending */ - - if ( !info->tx_count && !info->x_char ) - return; - - /* load the Transmit FIFO until FIFOs full or all data sent */ - - while( info->tx_count && (read_reg(info,SR0) & BIT1) ) { - - /* there is more space in the transmit FIFO and */ - /* there is more data in transmit buffer */ - - if ( (info->tx_count > 1) && !info->x_char ) { - /* write 16-bits */ - TwoBytes[0] = info->tx_buf[info->tx_get++]; - if (info->tx_get >= info->max_frame_size) - info->tx_get -= info->max_frame_size; - TwoBytes[1] = info->tx_buf[info->tx_get++]; - if (info->tx_get >= info->max_frame_size) - info->tx_get -= info->max_frame_size; - - write_reg16(info, TRB, *((u16 *)TwoBytes)); - - info->tx_count -= 2; - info->icount.tx += 2; - } else { - /* only 1 byte left to transmit or 1 FIFO slot left */ - - if (info->x_char) { - /* transmit pending high priority char */ - write_reg(info, TRB, info->x_char); - info->x_char = 0; - } else { - write_reg(info, TRB, info->tx_buf[info->tx_get++]); - if (info->tx_get >= info->max_frame_size) - info->tx_get -= info->max_frame_size; - info->tx_count--; - } - info->icount.tx++; - } - } -} - -/* Reset a port to a known state - */ -static void reset_port(SLMP_INFO *info) -{ - if (info->sca_base) { - - tx_stop(info); - rx_stop(info); - - info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); - set_signals(info); - - /* disable all port interrupts */ - info->ie0_value = 0; - info->ie1_value = 0; - info->ie2_value = 0; - write_reg(info, IE0, info->ie0_value); - write_reg(info, IE1, info->ie1_value); - write_reg(info, IE2, info->ie2_value); - - write_reg(info, CMD, CHRESET); - } -} - -/* Reset all the ports to a known state. - */ -static void reset_adapter(SLMP_INFO *info) -{ - int i; - - for ( i=0; i < SCA_MAX_PORTS; ++i) { - if (info->port_array[i]) - reset_port(info->port_array[i]); - } -} - -/* Program port for asynchronous communications. - */ -static void async_mode(SLMP_INFO *info) -{ - - unsigned char RegValue; - - tx_stop(info); - rx_stop(info); - - /* MD0, Mode Register 0 - * - * 07..05 PRCTL<2..0>, Protocol Mode, 000=async - * 04 AUTO, Auto-enable (RTS/CTS/DCD) - * 03 Reserved, must be 0 - * 02 CRCCC, CRC Calculation, 0=disabled - * 01..00 STOP<1..0> Stop bits (00=1,10=2) - * - * 0000 0000 - */ - RegValue = 0x00; - if (info->params.stop_bits != 1) - RegValue |= BIT1; - write_reg(info, MD0, RegValue); - - /* MD1, Mode Register 1 - * - * 07..06 BRATE<1..0>, bit rate, 00=1/1 01=1/16 10=1/32 11=1/64 - * 05..04 TXCHR<1..0>, tx char size, 00=8 bits,01=7,10=6,11=5 - * 03..02 RXCHR<1..0>, rx char size - * 01..00 PMPM<1..0>, Parity mode, 00=none 10=even 11=odd - * - * 0100 0000 - */ - RegValue = 0x40; - switch (info->params.data_bits) { - case 7: RegValue |= BIT4 + BIT2; break; - case 6: RegValue |= BIT5 + BIT3; break; - case 5: RegValue |= BIT5 + BIT4 + BIT3 + BIT2; break; - } - if (info->params.parity != ASYNC_PARITY_NONE) { - RegValue |= BIT1; - if (info->params.parity == ASYNC_PARITY_ODD) - RegValue |= BIT0; - } - write_reg(info, MD1, RegValue); - - /* MD2, Mode Register 2 - * - * 07..02 Reserved, must be 0 - * 01..00 CNCT<1..0> Channel connection, 00=normal 11=local loopback - * - * 0000 0000 - */ - RegValue = 0x00; - if (info->params.loopback) - RegValue |= (BIT1 + BIT0); - write_reg(info, MD2, RegValue); - - /* RXS, Receive clock source - * - * 07 Reserved, must be 0 - * 06..04 RXCS<2..0>, clock source, 000=RxC Pin, 100=BRG, 110=DPLL - * 03..00 RXBR<3..0>, rate divisor, 0000=1 - */ - RegValue=BIT6; - write_reg(info, RXS, RegValue); - - /* TXS, Transmit clock source - * - * 07 Reserved, must be 0 - * 06..04 RXCS<2..0>, clock source, 000=TxC Pin, 100=BRG, 110=Receive Clock - * 03..00 RXBR<3..0>, rate divisor, 0000=1 - */ - RegValue=BIT6; - write_reg(info, TXS, RegValue); - - /* Control Register - * - * 6,4,2,0 CLKSEL<3..0>, 0 = TcCLK in, 1 = Auxclk out - */ - info->port_array[0]->ctrlreg_value |= (BIT0 << (info->port_num * 2)); - write_control_reg(info); - - tx_set_idle(info); - - /* RRC Receive Ready Control 0 - * - * 07..05 Reserved, must be 0 - * 04..00 RRC<4..0> Rx FIFO trigger active 0x00 = 1 byte - */ - write_reg(info, RRC, 0x00); - - /* TRC0 Transmit Ready Control 0 - * - * 07..05 Reserved, must be 0 - * 04..00 TRC<4..0> Tx FIFO trigger active 0x10 = 16 bytes - */ - write_reg(info, TRC0, 0x10); - - /* TRC1 Transmit Ready Control 1 - * - * 07..05 Reserved, must be 0 - * 04..00 TRC<4..0> Tx FIFO trigger inactive 0x1e = 31 bytes (full-1) - */ - write_reg(info, TRC1, 0x1e); - - /* CTL, MSCI control register - * - * 07..06 Reserved, set to 0 - * 05 UDRNC, underrun control, 0=abort 1=CRC+flag (HDLC/BSC) - * 04 IDLC, idle control, 0=mark 1=idle register - * 03 BRK, break, 0=off 1 =on (async) - * 02 SYNCLD, sync char load enable (BSC) 1=enabled - * 01 GOP, go active on poll (LOOP mode) 1=enabled - * 00 RTS, RTS output control, 0=active 1=inactive - * - * 0001 0001 - */ - RegValue = 0x10; - if (!(info->serial_signals & SerialSignal_RTS)) - RegValue |= 0x01; - write_reg(info, CTL, RegValue); - - /* enable status interrupts */ - info->ie0_value |= TXINTE + RXINTE; - write_reg(info, IE0, info->ie0_value); - - /* enable break detect interrupt */ - info->ie1_value = BRKD; - write_reg(info, IE1, info->ie1_value); - - /* enable rx overrun interrupt */ - info->ie2_value = OVRN; - write_reg(info, IE2, info->ie2_value); - - set_rate( info, info->params.data_rate * 16 ); -} - -/* Program the SCA for HDLC communications. - */ -static void hdlc_mode(SLMP_INFO *info) -{ - unsigned char RegValue; - u32 DpllDivisor; - - // Can't use DPLL because SCA outputs recovered clock on RxC when - // DPLL mode selected. This causes output contention with RxC receiver. - // Use of DPLL would require external hardware to disable RxC receiver - // when DPLL mode selected. - info->params.flags &= ~(HDLC_FLAG_TXC_DPLL + HDLC_FLAG_RXC_DPLL); - - /* disable DMA interrupts */ - write_reg(info, TXDMA + DIR, 0); - write_reg(info, RXDMA + DIR, 0); - - /* MD0, Mode Register 0 - * - * 07..05 PRCTL<2..0>, Protocol Mode, 100=HDLC - * 04 AUTO, Auto-enable (RTS/CTS/DCD) - * 03 Reserved, must be 0 - * 02 CRCCC, CRC Calculation, 1=enabled - * 01 CRC1, CRC selection, 0=CRC-16,1=CRC-CCITT-16 - * 00 CRC0, CRC initial value, 1 = all 1s - * - * 1000 0001 - */ - RegValue = 0x81; - if (info->params.flags & HDLC_FLAG_AUTO_CTS) - RegValue |= BIT4; - if (info->params.flags & HDLC_FLAG_AUTO_DCD) - RegValue |= BIT4; - if (info->params.crc_type == HDLC_CRC_16_CCITT) - RegValue |= BIT2 + BIT1; - write_reg(info, MD0, RegValue); - - /* MD1, Mode Register 1 - * - * 07..06 ADDRS<1..0>, Address detect, 00=no addr check - * 05..04 TXCHR<1..0>, tx char size, 00=8 bits - * 03..02 RXCHR<1..0>, rx char size, 00=8 bits - * 01..00 PMPM<1..0>, Parity mode, 00=no parity - * - * 0000 0000 - */ - RegValue = 0x00; - write_reg(info, MD1, RegValue); - - /* MD2, Mode Register 2 - * - * 07 NRZFM, 0=NRZ, 1=FM - * 06..05 CODE<1..0> Encoding, 00=NRZ - * 04..03 DRATE<1..0> DPLL Divisor, 00=8 - * 02 Reserved, must be 0 - * 01..00 CNCT<1..0> Channel connection, 0=normal - * - * 0000 0000 - */ - RegValue = 0x00; - switch(info->params.encoding) { - case HDLC_ENCODING_NRZI: RegValue |= BIT5; break; - case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT7 + BIT5; break; /* aka FM1 */ - case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT7 + BIT6; break; /* aka FM0 */ - case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT7; break; /* aka Manchester */ -#if 0 - case HDLC_ENCODING_NRZB: /* not supported */ - case HDLC_ENCODING_NRZI_MARK: /* not supported */ - case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: /* not supported */ -#endif - } - if ( info->params.flags & HDLC_FLAG_DPLL_DIV16 ) { - DpllDivisor = 16; - RegValue |= BIT3; - } else if ( info->params.flags & HDLC_FLAG_DPLL_DIV8 ) { - DpllDivisor = 8; - } else { - DpllDivisor = 32; - RegValue |= BIT4; - } - write_reg(info, MD2, RegValue); - - - /* RXS, Receive clock source - * - * 07 Reserved, must be 0 - * 06..04 RXCS<2..0>, clock source, 000=RxC Pin, 100=BRG, 110=DPLL - * 03..00 RXBR<3..0>, rate divisor, 0000=1 - */ - RegValue=0; - if (info->params.flags & HDLC_FLAG_RXC_BRG) - RegValue |= BIT6; - if (info->params.flags & HDLC_FLAG_RXC_DPLL) - RegValue |= BIT6 + BIT5; - write_reg(info, RXS, RegValue); - - /* TXS, Transmit clock source - * - * 07 Reserved, must be 0 - * 06..04 RXCS<2..0>, clock source, 000=TxC Pin, 100=BRG, 110=Receive Clock - * 03..00 RXBR<3..0>, rate divisor, 0000=1 - */ - RegValue=0; - if (info->params.flags & HDLC_FLAG_TXC_BRG) - RegValue |= BIT6; - if (info->params.flags & HDLC_FLAG_TXC_DPLL) - RegValue |= BIT6 + BIT5; - write_reg(info, TXS, RegValue); - - if (info->params.flags & HDLC_FLAG_RXC_DPLL) - set_rate(info, info->params.clock_speed * DpllDivisor); - else - set_rate(info, info->params.clock_speed); - - /* GPDATA (General Purpose I/O Data Register) - * - * 6,4,2,0 CLKSEL<3..0>, 0 = TcCLK in, 1 = Auxclk out - */ - if (info->params.flags & HDLC_FLAG_TXC_BRG) - info->port_array[0]->ctrlreg_value |= (BIT0 << (info->port_num * 2)); - else - info->port_array[0]->ctrlreg_value &= ~(BIT0 << (info->port_num * 2)); - write_control_reg(info); - - /* RRC Receive Ready Control 0 - * - * 07..05 Reserved, must be 0 - * 04..00 RRC<4..0> Rx FIFO trigger active - */ - write_reg(info, RRC, rx_active_fifo_level); - - /* TRC0 Transmit Ready Control 0 - * - * 07..05 Reserved, must be 0 - * 04..00 TRC<4..0> Tx FIFO trigger active - */ - write_reg(info, TRC0, tx_active_fifo_level); - - /* TRC1 Transmit Ready Control 1 - * - * 07..05 Reserved, must be 0 - * 04..00 TRC<4..0> Tx FIFO trigger inactive 0x1f = 32 bytes (full) - */ - write_reg(info, TRC1, (unsigned char)(tx_negate_fifo_level - 1)); - - /* DMR, DMA Mode Register - * - * 07..05 Reserved, must be 0 - * 04 TMOD, Transfer Mode: 1=chained-block - * 03 Reserved, must be 0 - * 02 NF, Number of Frames: 1=multi-frame - * 01 CNTE, Frame End IRQ Counter enable: 0=disabled - * 00 Reserved, must be 0 - * - * 0001 0100 - */ - write_reg(info, TXDMA + DMR, 0x14); - write_reg(info, RXDMA + DMR, 0x14); - - /* Set chain pointer base (upper 8 bits of 24 bit addr) */ - write_reg(info, RXDMA + CPB, - (unsigned char)(info->buffer_list_phys >> 16)); - - /* Set chain pointer base (upper 8 bits of 24 bit addr) */ - write_reg(info, TXDMA + CPB, - (unsigned char)(info->buffer_list_phys >> 16)); - - /* enable status interrupts. other code enables/disables - * the individual sources for these two interrupt classes. - */ - info->ie0_value |= TXINTE + RXINTE; - write_reg(info, IE0, info->ie0_value); - - /* CTL, MSCI control register - * - * 07..06 Reserved, set to 0 - * 05 UDRNC, underrun control, 0=abort 1=CRC+flag (HDLC/BSC) - * 04 IDLC, idle control, 0=mark 1=idle register - * 03 BRK, break, 0=off 1 =on (async) - * 02 SYNCLD, sync char load enable (BSC) 1=enabled - * 01 GOP, go active on poll (LOOP mode) 1=enabled - * 00 RTS, RTS output control, 0=active 1=inactive - * - * 0001 0001 - */ - RegValue = 0x10; - if (!(info->serial_signals & SerialSignal_RTS)) - RegValue |= 0x01; - write_reg(info, CTL, RegValue); - - /* preamble not supported ! */ - - tx_set_idle(info); - tx_stop(info); - rx_stop(info); - - set_rate(info, info->params.clock_speed); - - if (info->params.loopback) - enable_loopback(info,1); -} - -/* Set the transmit HDLC idle mode - */ -static void tx_set_idle(SLMP_INFO *info) -{ - unsigned char RegValue = 0xff; - - /* Map API idle mode to SCA register bits */ - switch(info->idle_mode) { - case HDLC_TXIDLE_FLAGS: RegValue = 0x7e; break; - case HDLC_TXIDLE_ALT_ZEROS_ONES: RegValue = 0xaa; break; - case HDLC_TXIDLE_ZEROS: RegValue = 0x00; break; - case HDLC_TXIDLE_ONES: RegValue = 0xff; break; - case HDLC_TXIDLE_ALT_MARK_SPACE: RegValue = 0xaa; break; - case HDLC_TXIDLE_SPACE: RegValue = 0x00; break; - case HDLC_TXIDLE_MARK: RegValue = 0xff; break; - } - - write_reg(info, IDL, RegValue); -} - -/* Query the adapter for the state of the V24 status (input) signals. - */ -static void get_signals(SLMP_INFO *info) -{ - u16 status = read_reg(info, SR3); - u16 gpstatus = read_status_reg(info); - u16 testbit; - - /* clear all serial signals except DTR and RTS */ - info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; - - /* set serial signal bits to reflect MISR */ - - if (!(status & BIT3)) - info->serial_signals |= SerialSignal_CTS; - - if ( !(status & BIT2)) - info->serial_signals |= SerialSignal_DCD; - - testbit = BIT1 << (info->port_num * 2); // Port 0..3 RI is GPDATA<1,3,5,7> - if (!(gpstatus & testbit)) - info->serial_signals |= SerialSignal_RI; - - testbit = BIT0 << (info->port_num * 2); // Port 0..3 DSR is GPDATA<0,2,4,6> - if (!(gpstatus & testbit)) - info->serial_signals |= SerialSignal_DSR; -} - -/* Set the state of DTR and RTS based on contents of - * serial_signals member of device context. - */ -static void set_signals(SLMP_INFO *info) -{ - unsigned char RegValue; - u16 EnableBit; - - RegValue = read_reg(info, CTL); - if (info->serial_signals & SerialSignal_RTS) - RegValue &= ~BIT0; - else - RegValue |= BIT0; - write_reg(info, CTL, RegValue); - - // Port 0..3 DTR is ctrl reg <1,3,5,7> - EnableBit = BIT1 << (info->port_num*2); - if (info->serial_signals & SerialSignal_DTR) - info->port_array[0]->ctrlreg_value &= ~EnableBit; - else - info->port_array[0]->ctrlreg_value |= EnableBit; - write_control_reg(info); -} - -/*******************/ -/* DMA Buffer Code */ -/*******************/ - -/* Set the count for all receive buffers to SCABUFSIZE - * and set the current buffer to the first buffer. This effectively - * makes all buffers free and discards any data in buffers. - */ -static void rx_reset_buffers(SLMP_INFO *info) -{ - rx_free_frame_buffers(info, 0, info->rx_buf_count - 1); -} - -/* Free the buffers used by a received frame - * - * info pointer to device instance data - * first index of 1st receive buffer of frame - * last index of last receive buffer of frame - */ -static void rx_free_frame_buffers(SLMP_INFO *info, unsigned int first, unsigned int last) -{ - bool done = false; - - while(!done) { - /* reset current buffer for reuse */ - info->rx_buf_list[first].status = 0xff; - - if (first == last) { - done = true; - /* set new last rx descriptor address */ - write_reg16(info, RXDMA + EDA, info->rx_buf_list_ex[first].phys_entry); - } - - first++; - if (first == info->rx_buf_count) - first = 0; - } - - /* set current buffer to next buffer after last buffer of frame */ - info->current_rx_buf = first; -} - -/* Return a received frame from the receive DMA buffers. - * Only frames received without errors are returned. - * - * Return Value: true if frame returned, otherwise false - */ -static bool rx_get_frame(SLMP_INFO *info) -{ - unsigned int StartIndex, EndIndex; /* index of 1st and last buffers of Rx frame */ - unsigned short status; - unsigned int framesize = 0; - bool ReturnCode = false; - unsigned long flags; - struct tty_struct *tty = info->port.tty; - unsigned char addr_field = 0xff; - SCADESC *desc; - SCADESC_EX *desc_ex; - -CheckAgain: - /* assume no frame returned, set zero length */ - framesize = 0; - addr_field = 0xff; - - /* - * current_rx_buf points to the 1st buffer of the next available - * receive frame. To find the last buffer of the frame look for - * a non-zero status field in the buffer entries. (The status - * field is set by the 16C32 after completing a receive frame. - */ - StartIndex = EndIndex = info->current_rx_buf; - - for ( ;; ) { - desc = &info->rx_buf_list[EndIndex]; - desc_ex = &info->rx_buf_list_ex[EndIndex]; - - if (desc->status == 0xff) - goto Cleanup; /* current desc still in use, no frames available */ - - if (framesize == 0 && info->params.addr_filter != 0xff) - addr_field = desc_ex->virt_addr[0]; - - framesize += desc->length; - - /* Status != 0 means last buffer of frame */ - if (desc->status) - break; - - EndIndex++; - if (EndIndex == info->rx_buf_count) - EndIndex = 0; - - if (EndIndex == info->current_rx_buf) { - /* all buffers have been 'used' but none mark */ - /* the end of a frame. Reset buffers and receiver. */ - if ( info->rx_enabled ){ - spin_lock_irqsave(&info->lock,flags); - rx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - } - goto Cleanup; - } - - } - - /* check status of receive frame */ - - /* frame status is byte stored after frame data - * - * 7 EOM (end of msg), 1 = last buffer of frame - * 6 Short Frame, 1 = short frame - * 5 Abort, 1 = frame aborted - * 4 Residue, 1 = last byte is partial - * 3 Overrun, 1 = overrun occurred during frame reception - * 2 CRC, 1 = CRC error detected - * - */ - status = desc->status; - - /* ignore CRC bit if not using CRC (bit is undefined) */ - /* Note:CRC is not save to data buffer */ - if (info->params.crc_type == HDLC_CRC_NONE) - status &= ~BIT2; - - if (framesize == 0 || - (addr_field != 0xff && addr_field != info->params.addr_filter)) { - /* discard 0 byte frames, this seems to occur sometime - * when remote is idling flags. - */ - rx_free_frame_buffers(info, StartIndex, EndIndex); - goto CheckAgain; - } - - if (framesize < 2) - status |= BIT6; - - if (status & (BIT6+BIT5+BIT3+BIT2)) { - /* received frame has errors, - * update counts and mark frame size as 0 - */ - if (status & BIT6) - info->icount.rxshort++; - else if (status & BIT5) - info->icount.rxabort++; - else if (status & BIT3) - info->icount.rxover++; - else - info->icount.rxcrc++; - - framesize = 0; -#if SYNCLINK_GENERIC_HDLC - { - info->netdev->stats.rx_errors++; - info->netdev->stats.rx_frame_errors++; - } -#endif - } - - if ( debug_level >= DEBUG_LEVEL_BH ) - printk("%s(%d):%s rx_get_frame() status=%04X size=%d\n", - __FILE__,__LINE__,info->device_name,status,framesize); - - if ( debug_level >= DEBUG_LEVEL_DATA ) - trace_block(info,info->rx_buf_list_ex[StartIndex].virt_addr, - min_t(int, framesize,SCABUFSIZE),0); - - if (framesize) { - if (framesize > info->max_frame_size) - info->icount.rxlong++; - else { - /* copy dma buffer(s) to contiguous intermediate buffer */ - int copy_count = framesize; - int index = StartIndex; - unsigned char *ptmp = info->tmp_rx_buf; - info->tmp_rx_buf_count = framesize; - - info->icount.rxok++; - - while(copy_count) { - int partial_count = min(copy_count,SCABUFSIZE); - memcpy( ptmp, - info->rx_buf_list_ex[index].virt_addr, - partial_count ); - ptmp += partial_count; - copy_count -= partial_count; - - if ( ++index == info->rx_buf_count ) - index = 0; - } - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_rx(info,info->tmp_rx_buf,framesize); - else -#endif - ldisc_receive_buf(tty,info->tmp_rx_buf, - info->flag_buf, framesize); - } - } - /* Free the buffers used by this frame. */ - rx_free_frame_buffers( info, StartIndex, EndIndex ); - - ReturnCode = true; - -Cleanup: - if ( info->rx_enabled && info->rx_overflow ) { - /* Receiver is enabled, but needs to restarted due to - * rx buffer overflow. If buffers are empty, restart receiver. - */ - if (info->rx_buf_list[EndIndex].status == 0xff) { - spin_lock_irqsave(&info->lock,flags); - rx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - } - } - - return ReturnCode; -} - -/* load the transmit DMA buffer with data - */ -static void tx_load_dma_buffer(SLMP_INFO *info, const char *buf, unsigned int count) -{ - unsigned short copy_count; - unsigned int i = 0; - SCADESC *desc; - SCADESC_EX *desc_ex; - - if ( debug_level >= DEBUG_LEVEL_DATA ) - trace_block(info,buf, min_t(int, count,SCABUFSIZE), 1); - - /* Copy source buffer to one or more DMA buffers, starting with - * the first transmit dma buffer. - */ - for(i=0;;) - { - copy_count = min_t(unsigned short,count,SCABUFSIZE); - - desc = &info->tx_buf_list[i]; - desc_ex = &info->tx_buf_list_ex[i]; - - load_pci_memory(info, desc_ex->virt_addr,buf,copy_count); - - desc->length = copy_count; - desc->status = 0; - - buf += copy_count; - count -= copy_count; - - if (!count) - break; - - i++; - if (i >= info->tx_buf_count) - i = 0; - } - - info->tx_buf_list[i].status = 0x81; /* set EOM and EOT status */ - info->last_tx_buf = ++i; -} - -static bool register_test(SLMP_INFO *info) -{ - static unsigned char testval[] = {0x00, 0xff, 0xaa, 0x55, 0x69, 0x96}; - static unsigned int count = ARRAY_SIZE(testval); - unsigned int i; - bool rc = true; - unsigned long flags; - - spin_lock_irqsave(&info->lock,flags); - reset_port(info); - - /* assume failure */ - info->init_error = DiagStatus_AddressFailure; - - /* Write bit patterns to various registers but do it out of */ - /* sync, then read back and verify values. */ - - for (i = 0 ; i < count ; i++) { - write_reg(info, TMC, testval[i]); - write_reg(info, IDL, testval[(i+1)%count]); - write_reg(info, SA0, testval[(i+2)%count]); - write_reg(info, SA1, testval[(i+3)%count]); - - if ( (read_reg(info, TMC) != testval[i]) || - (read_reg(info, IDL) != testval[(i+1)%count]) || - (read_reg(info, SA0) != testval[(i+2)%count]) || - (read_reg(info, SA1) != testval[(i+3)%count]) ) - { - rc = false; - break; - } - } - - reset_port(info); - spin_unlock_irqrestore(&info->lock,flags); - - return rc; -} - -static bool irq_test(SLMP_INFO *info) -{ - unsigned long timeout; - unsigned long flags; - - unsigned char timer = (info->port_num & 1) ? TIMER2 : TIMER0; - - spin_lock_irqsave(&info->lock,flags); - reset_port(info); - - /* assume failure */ - info->init_error = DiagStatus_IrqFailure; - info->irq_occurred = false; - - /* setup timer0 on SCA0 to interrupt */ - - /* IER2<7..4> = timer<3..0> interrupt enables (1=enabled) */ - write_reg(info, IER2, (unsigned char)((info->port_num & 1) ? BIT6 : BIT4)); - - write_reg(info, (unsigned char)(timer + TEPR), 0); /* timer expand prescale */ - write_reg16(info, (unsigned char)(timer + TCONR), 1); /* timer constant */ - - - /* TMCS, Timer Control/Status Register - * - * 07 CMF, Compare match flag (read only) 1=match - * 06 ECMI, CMF Interrupt Enable: 1=enabled - * 05 Reserved, must be 0 - * 04 TME, Timer Enable - * 03..00 Reserved, must be 0 - * - * 0101 0000 - */ - write_reg(info, (unsigned char)(timer + TMCS), 0x50); - - spin_unlock_irqrestore(&info->lock,flags); - - timeout=100; - while( timeout-- && !info->irq_occurred ) { - msleep_interruptible(10); - } - - spin_lock_irqsave(&info->lock,flags); - reset_port(info); - spin_unlock_irqrestore(&info->lock,flags); - - return info->irq_occurred; -} - -/* initialize individual SCA device (2 ports) - */ -static bool sca_init(SLMP_INFO *info) -{ - /* set wait controller to single mem partition (low), no wait states */ - write_reg(info, PABR0, 0); /* wait controller addr boundary 0 */ - write_reg(info, PABR1, 0); /* wait controller addr boundary 1 */ - write_reg(info, WCRL, 0); /* wait controller low range */ - write_reg(info, WCRM, 0); /* wait controller mid range */ - write_reg(info, WCRH, 0); /* wait controller high range */ - - /* DPCR, DMA Priority Control - * - * 07..05 Not used, must be 0 - * 04 BRC, bus release condition: 0=all transfers complete - * 03 CCC, channel change condition: 0=every cycle - * 02..00 PR<2..0>, priority 100=round robin - * - * 00000100 = 0x04 - */ - write_reg(info, DPCR, dma_priority); - - /* DMA Master Enable, BIT7: 1=enable all channels */ - write_reg(info, DMER, 0x80); - - /* enable all interrupt classes */ - write_reg(info, IER0, 0xff); /* TxRDY,RxRDY,TxINT,RxINT (ports 0-1) */ - write_reg(info, IER1, 0xff); /* DMIB,DMIA (channels 0-3) */ - write_reg(info, IER2, 0xf0); /* TIRQ (timers 0-3) */ - - /* ITCR, interrupt control register - * 07 IPC, interrupt priority, 0=MSCI->DMA - * 06..05 IAK<1..0>, Acknowledge cycle, 00=non-ack cycle - * 04 VOS, Vector Output, 0=unmodified vector - * 03..00 Reserved, must be 0 - */ - write_reg(info, ITCR, 0); - - return true; -} - -/* initialize adapter hardware - */ -static bool init_adapter(SLMP_INFO *info) -{ - int i; - - /* Set BIT30 of Local Control Reg 0x50 to reset SCA */ - volatile u32 *MiscCtrl = (u32 *)(info->lcr_base + 0x50); - u32 readval; - - info->misc_ctrl_value |= BIT30; - *MiscCtrl = info->misc_ctrl_value; - - /* - * Force at least 170ns delay before clearing - * reset bit. Each read from LCR takes at least - * 30ns so 10 times for 300ns to be safe. - */ - for(i=0;i<10;i++) - readval = *MiscCtrl; - - info->misc_ctrl_value &= ~BIT30; - *MiscCtrl = info->misc_ctrl_value; - - /* init control reg (all DTRs off, all clksel=input) */ - info->ctrlreg_value = 0xaa; - write_control_reg(info); - - { - volatile u32 *LCR1BRDR = (u32 *)(info->lcr_base + 0x2c); - lcr1_brdr_value &= ~(BIT5 + BIT4 + BIT3); - - switch(read_ahead_count) - { - case 16: - lcr1_brdr_value |= BIT5 + BIT4 + BIT3; - break; - case 8: - lcr1_brdr_value |= BIT5 + BIT4; - break; - case 4: - lcr1_brdr_value |= BIT5 + BIT3; - break; - case 0: - lcr1_brdr_value |= BIT5; - break; - } - - *LCR1BRDR = lcr1_brdr_value; - *MiscCtrl = misc_ctrl_value; - } - - sca_init(info->port_array[0]); - sca_init(info->port_array[2]); - - return true; -} - -/* Loopback an HDLC frame to test the hardware - * interrupt and DMA functions. - */ -static bool loopback_test(SLMP_INFO *info) -{ -#define TESTFRAMESIZE 20 - - unsigned long timeout; - u16 count = TESTFRAMESIZE; - unsigned char buf[TESTFRAMESIZE]; - bool rc = false; - unsigned long flags; - - struct tty_struct *oldtty = info->port.tty; - u32 speed = info->params.clock_speed; - - info->params.clock_speed = 3686400; - info->port.tty = NULL; - - /* assume failure */ - info->init_error = DiagStatus_DmaFailure; - - /* build and send transmit frame */ - for (count = 0; count < TESTFRAMESIZE;++count) - buf[count] = (unsigned char)count; - - memset(info->tmp_rx_buf,0,TESTFRAMESIZE); - - /* program hardware for HDLC and enabled receiver */ - spin_lock_irqsave(&info->lock,flags); - hdlc_mode(info); - enable_loopback(info,1); - rx_start(info); - info->tx_count = count; - tx_load_dma_buffer(info,buf,count); - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - - /* wait for receive complete */ - /* Set a timeout for waiting for interrupt. */ - for ( timeout = 100; timeout; --timeout ) { - msleep_interruptible(10); - - if (rx_get_frame(info)) { - rc = true; - break; - } - } - - /* verify received frame length and contents */ - if (rc && - ( info->tmp_rx_buf_count != count || - memcmp(buf, info->tmp_rx_buf,count))) { - rc = false; - } - - spin_lock_irqsave(&info->lock,flags); - reset_adapter(info); - spin_unlock_irqrestore(&info->lock,flags); - - info->params.clock_speed = speed; - info->port.tty = oldtty; - - return rc; -} - -/* Perform diagnostics on hardware - */ -static int adapter_test( SLMP_INFO *info ) -{ - unsigned long flags; - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):Testing device %s\n", - __FILE__,__LINE__,info->device_name ); - - spin_lock_irqsave(&info->lock,flags); - init_adapter(info); - spin_unlock_irqrestore(&info->lock,flags); - - info->port_array[0]->port_count = 0; - - if ( register_test(info->port_array[0]) && - register_test(info->port_array[1])) { - - info->port_array[0]->port_count = 2; - - if ( register_test(info->port_array[2]) && - register_test(info->port_array[3]) ) - info->port_array[0]->port_count += 2; - } - else { - printk( "%s(%d):Register test failure for device %s Addr=%08lX\n", - __FILE__,__LINE__,info->device_name, (unsigned long)(info->phys_sca_base)); - return -ENODEV; - } - - if ( !irq_test(info->port_array[0]) || - !irq_test(info->port_array[1]) || - (info->port_count == 4 && !irq_test(info->port_array[2])) || - (info->port_count == 4 && !irq_test(info->port_array[3]))) { - printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", - __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); - return -ENODEV; - } - - if (!loopback_test(info->port_array[0]) || - !loopback_test(info->port_array[1]) || - (info->port_count == 4 && !loopback_test(info->port_array[2])) || - (info->port_count == 4 && !loopback_test(info->port_array[3]))) { - printk( "%s(%d):DMA test failure for device %s\n", - __FILE__,__LINE__,info->device_name); - return -ENODEV; - } - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):device %s passed diagnostics\n", - __FILE__,__LINE__,info->device_name ); - - info->port_array[0]->init_error = 0; - info->port_array[1]->init_error = 0; - if ( info->port_count > 2 ) { - info->port_array[2]->init_error = 0; - info->port_array[3]->init_error = 0; - } - - return 0; -} - -/* Test the shared memory on a PCI adapter. - */ -static bool memory_test(SLMP_INFO *info) -{ - static unsigned long testval[] = { 0x0, 0x55555555, 0xaaaaaaaa, - 0x66666666, 0x99999999, 0xffffffff, 0x12345678 }; - unsigned long count = ARRAY_SIZE(testval); - unsigned long i; - unsigned long limit = SCA_MEM_SIZE/sizeof(unsigned long); - unsigned long * addr = (unsigned long *)info->memory_base; - - /* Test data lines with test pattern at one location. */ - - for ( i = 0 ; i < count ; i++ ) { - *addr = testval[i]; - if ( *addr != testval[i] ) - return false; - } - - /* Test address lines with incrementing pattern over */ - /* entire address range. */ - - for ( i = 0 ; i < limit ; i++ ) { - *addr = i * 4; - addr++; - } - - addr = (unsigned long *)info->memory_base; - - for ( i = 0 ; i < limit ; i++ ) { - if ( *addr != i * 4 ) - return false; - addr++; - } - - memset( info->memory_base, 0, SCA_MEM_SIZE ); - return true; -} - -/* Load data into PCI adapter shared memory. - * - * The PCI9050 releases control of the local bus - * after completing the current read or write operation. - * - * While the PCI9050 write FIFO not empty, the - * PCI9050 treats all of the writes as a single transaction - * and does not release the bus. This causes DMA latency problems - * at high speeds when copying large data blocks to the shared memory. - * - * This function breaks a write into multiple transations by - * interleaving a read which flushes the write FIFO and 'completes' - * the write transation. This allows any pending DMA request to gain control - * of the local bus in a timely fasion. - */ -static void load_pci_memory(SLMP_INFO *info, char* dest, const char* src, unsigned short count) -{ - /* A load interval of 16 allows for 4 32-bit writes at */ - /* 136ns each for a maximum latency of 542ns on the local bus.*/ - - unsigned short interval = count / sca_pci_load_interval; - unsigned short i; - - for ( i = 0 ; i < interval ; i++ ) - { - memcpy(dest, src, sca_pci_load_interval); - read_status_reg(info); - dest += sca_pci_load_interval; - src += sca_pci_load_interval; - } - - memcpy(dest, src, count % sca_pci_load_interval); -} - -static void trace_block(SLMP_INFO *info,const char* data, int count, int xmit) -{ - int i; - int linecount; - if (xmit) - printk("%s tx data:\n",info->device_name); - else - printk("%s rx data:\n",info->device_name); - - while(count) { - if (count > 16) - linecount = 16; - else - linecount = count; - - for(i=0;i=040 && data[i]<=0176) - printk("%c",data[i]); - else - printk("."); - } - printk("\n"); - - data += linecount; - count -= linecount; - } -} /* end of trace_block() */ - -/* called when HDLC frame times out - * update stats and do tx completion processing - */ -static void tx_timeout(unsigned long context) -{ - SLMP_INFO *info = (SLMP_INFO*)context; - unsigned long flags; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):%s tx_timeout()\n", - __FILE__,__LINE__,info->device_name); - if(info->tx_active && info->params.mode == MGSL_MODE_HDLC) { - info->icount.txtimeout++; - } - spin_lock_irqsave(&info->lock,flags); - info->tx_active = false; - info->tx_count = info->tx_put = info->tx_get = 0; - - spin_unlock_irqrestore(&info->lock,flags); - -#if SYNCLINK_GENERIC_HDLC - if (info->netcount) - hdlcdev_tx_done(info); - else -#endif - bh_transmit(info); -} - -/* called to periodically check the DSR/RI modem signal input status - */ -static void status_timeout(unsigned long context) -{ - u16 status = 0; - SLMP_INFO *info = (SLMP_INFO*)context; - unsigned long flags; - unsigned char delta; - - - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - - /* check for DSR/RI state change */ - - delta = info->old_signals ^ info->serial_signals; - info->old_signals = info->serial_signals; - - if (delta & SerialSignal_DSR) - status |= MISCSTATUS_DSR_LATCHED|(info->serial_signals&SerialSignal_DSR); - - if (delta & SerialSignal_RI) - status |= MISCSTATUS_RI_LATCHED|(info->serial_signals&SerialSignal_RI); - - if (delta & SerialSignal_DCD) - status |= MISCSTATUS_DCD_LATCHED|(info->serial_signals&SerialSignal_DCD); - - if (delta & SerialSignal_CTS) - status |= MISCSTATUS_CTS_LATCHED|(info->serial_signals&SerialSignal_CTS); - - if (status) - isr_io_pin(info,status); - - mod_timer(&info->status_timer, jiffies + msecs_to_jiffies(10)); -} - - -/* Register Access Routines - - * All registers are memory mapped - */ -#define CALC_REGADDR() \ - unsigned char * RegAddr = (unsigned char*)(info->sca_base + Addr); \ - if (info->port_num > 1) \ - RegAddr += 256; /* port 0-1 SCA0, 2-3 SCA1 */ \ - if ( info->port_num & 1) { \ - if (Addr > 0x7f) \ - RegAddr += 0x40; /* DMA access */ \ - else if (Addr > 0x1f && Addr < 0x60) \ - RegAddr += 0x20; /* MSCI access */ \ - } - - -static unsigned char read_reg(SLMP_INFO * info, unsigned char Addr) -{ - CALC_REGADDR(); - return *RegAddr; -} -static void write_reg(SLMP_INFO * info, unsigned char Addr, unsigned char Value) -{ - CALC_REGADDR(); - *RegAddr = Value; -} - -static u16 read_reg16(SLMP_INFO * info, unsigned char Addr) -{ - CALC_REGADDR(); - return *((u16 *)RegAddr); -} - -static void write_reg16(SLMP_INFO * info, unsigned char Addr, u16 Value) -{ - CALC_REGADDR(); - *((u16 *)RegAddr) = Value; -} - -static unsigned char read_status_reg(SLMP_INFO * info) -{ - unsigned char *RegAddr = (unsigned char *)info->statctrl_base; - return *RegAddr; -} - -static void write_control_reg(SLMP_INFO * info) -{ - unsigned char *RegAddr = (unsigned char *)info->statctrl_base; - *RegAddr = info->port_array[0]->ctrlreg_value; -} - - -static int __devinit synclinkmp_init_one (struct pci_dev *dev, - const struct pci_device_id *ent) -{ - if (pci_enable_device(dev)) { - printk("error enabling pci device %p\n", dev); - return -EIO; - } - device_init( ++synclinkmp_adapter_count, dev ); - return 0; -} - -static void __devexit synclinkmp_remove_one (struct pci_dev *dev) -{ -} diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig index 9cfbdb318ed9..3fd7199301b6 100644 --- a/drivers/tty/Kconfig +++ b/drivers/tty/Kconfig @@ -147,4 +147,175 @@ config LEGACY_PTY_COUNT When not in use, each legacy PTY occupies 12 bytes on 32-bit architectures and 24 bytes on 64-bit architectures. +config BFIN_JTAG_COMM + tristate "Blackfin JTAG Communication" + depends on BLACKFIN + help + Add support for emulating a TTY device over the Blackfin JTAG. + + To compile this driver as a module, choose M here: the + module will be called bfin_jtag_comm. + +config BFIN_JTAG_COMM_CONSOLE + bool "Console on Blackfin JTAG" + depends on BFIN_JTAG_COMM=y + +config SERIAL_NONSTANDARD + bool "Non-standard serial port support" + depends on HAS_IOMEM + ---help--- + Say Y here if you have any non-standard serial boards -- boards + which aren't supported using the standard "dumb" serial driver. + This includes intelligent serial boards such as Cyclades, + Digiboards, etc. These are usually used for systems that need many + serial ports because they serve many terminals or dial-in + connections. + + Note that the answer to this question won't directly affect the + kernel: saying N will just cause the configurator to skip all + the questions about non-standard serial boards. + + Most people can say N here. + +config ROCKETPORT + tristate "Comtrol RocketPort support" + depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) + help + This driver supports Comtrol RocketPort and RocketModem PCI boards. + These boards provide 2, 4, 8, 16, or 32 high-speed serial ports or + modems. For information about the RocketPort/RocketModem boards + and this driver read . + + To compile this driver as a module, choose M here: the + module will be called rocket. + + If you want to compile this driver into the kernel, say Y here. If + you don't have a Comtrol RocketPort/RocketModem card installed, say N. + +config CYCLADES + tristate "Cyclades async mux support" + depends on SERIAL_NONSTANDARD && (PCI || ISA) + select FW_LOADER + ---help--- + This driver supports Cyclades Z and Y multiserial boards. + You would need something like this to connect more than two modems to + your Linux box, for instance in order to become a dial-in server. + + For information about the Cyclades-Z card, read + . + + To compile this driver as a module, choose M here: the + module will be called cyclades. + + If you haven't heard about it, it's safe to say N. + +config CYZ_INTR + bool "Cyclades-Z interrupt mode operation (EXPERIMENTAL)" + depends on EXPERIMENTAL && CYCLADES + help + The Cyclades-Z family of multiport cards allows 2 (two) driver op + modes: polling and interrupt. In polling mode, the driver will check + the status of the Cyclades-Z ports every certain amount of time + (which is called polling cycle and is configurable). In interrupt + mode, it will use an interrupt line (IRQ) in order to check the + status of the Cyclades-Z ports. The default op mode is polling. If + unsure, say N. + +config MOXA_INTELLIO + tristate "Moxa Intellio support" + depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) + select FW_LOADER + help + Say Y here if you have a Moxa Intellio multiport serial card. + + To compile this driver as a module, choose M here: the + module will be called moxa. + +config MOXA_SMARTIO + tristate "Moxa SmartIO support v. 2.0" + depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) + help + Say Y here if you have a Moxa SmartIO multiport serial card and/or + want to help develop a new version of this driver. + + This is upgraded (1.9.1) driver from original Moxa drivers with + changes finally resulting in PCI probing. + + This driver can also be built as a module. The module will be called + mxser. If you want to do that, say M here. + +config SYNCLINK + tristate "Microgate SyncLink card support" + depends on SERIAL_NONSTANDARD && PCI && ISA_DMA_API + help + Provides support for the SyncLink ISA and PCI multiprotocol serial + adapters. These adapters support asynchronous and HDLC bit + synchronous communication up to 10Mbps (PCI adapter). + + This driver can only be built as a module ( = code which can be + inserted in and removed from the running kernel whenever you want). + The module will be called synclink. If you want to do that, say M + here. + +config SYNCLINKMP + tristate "SyncLink Multiport support" + depends on SERIAL_NONSTANDARD && PCI + help + Enable support for the SyncLink Multiport (2 or 4 ports) + serial adapter, running asynchronous and HDLC communications up + to 2.048Mbps. Each ports is independently selectable for + RS-232, V.35, RS-449, RS-530, and X.21 + + This driver may be built as a module ( = code which can be + inserted in and removed from the running kernel whenever you want). + The module will be called synclinkmp. If you want to do that, say M + here. + +config SYNCLINK_GT + tristate "SyncLink GT/AC support" + depends on SERIAL_NONSTANDARD && PCI + help + Support for SyncLink GT and SyncLink AC families of + synchronous and asynchronous serial adapters + manufactured by Microgate Systems, Ltd. (www.microgate.com) + +config NOZOMI + tristate "HSDPA Broadband Wireless Data Card - Globe Trotter" + depends on PCI && EXPERIMENTAL + help + If you have a HSDPA driver Broadband Wireless Data Card - + Globe Trotter PCMCIA card, say Y here. + + To compile this driver as a module, choose M here, the module + will be called nozomi. + +config ISI + tristate "Multi-Tech multiport card support (EXPERIMENTAL)" + depends on SERIAL_NONSTANDARD && PCI + select FW_LOADER + help + This is a driver for the Multi-Tech cards which provide several + serial ports. The driver is experimental and can currently only be + built as a module. The module will be called isicom. + If you want to do that, choose M here. + +config N_HDLC + tristate "HDLC line discipline support" + depends on SERIAL_NONSTANDARD + help + Allows synchronous HDLC communications with tty device drivers that + support synchronous HDLC such as the Microgate SyncLink adapter. + + This driver can be built as a module ( = code which can be + inserted in and removed from the running kernel whenever you want). + The module will be called n_hdlc. If you want to do that, say M + here. + +config N_GSM + tristate "GSM MUX line discipline support (EXPERIMENTAL)" + depends on EXPERIMENTAL + depends on NET + help + This line discipline provides support for the GSM MUX protocol and + presents the mux as a set of 61 individual tty devices. diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile index 396277216e4f..e549da348a04 100644 --- a/drivers/tty/Makefile +++ b/drivers/tty/Makefile @@ -11,3 +11,16 @@ obj-$(CONFIG_R3964) += n_r3964.o obj-y += vt/ obj-$(CONFIG_HVC_DRIVER) += hvc/ obj-y += serial/ + +# tty drivers +obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o +obj-$(CONFIG_BFIN_JTAG_COMM) += bfin_jtag_comm.o +obj-$(CONFIG_CYCLADES) += cyclades.o +obj-$(CONFIG_ISI) += isicom.o +obj-$(CONFIG_MOXA_INTELLIO) += moxa.o +obj-$(CONFIG_MOXA_SMARTIO) += mxser.o +obj-$(CONFIG_NOZOMI) += nozomi.o +obj-$(CONFIG_ROCKETPORT) += rocket.o +obj-$(CONFIG_SYNCLINK_GT) += synclink_gt.o +obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o +obj-$(CONFIG_SYNCLINK) += synclink.o diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c new file mode 100644 index 000000000000..f214e5022472 --- /dev/null +++ b/drivers/tty/amiserial.c @@ -0,0 +1,2178 @@ +/* + * linux/drivers/char/amiserial.c + * + * Serial driver for the amiga builtin port. + * + * This code was created by taking serial.c version 4.30 from kernel + * release 2.3.22, replacing all hardware related stuff with the + * corresponding amiga hardware actions, and removing all irrelevant + * code. As a consequence, it uses many of the constants and names + * associated with the registers and bits of 16550 compatible UARTS - + * but only to keep track of status, etc in the state variables. It + * was done this was to make it easier to keep the code in line with + * (non hardware specific) changes to serial.c. + * + * The port is registered with the tty driver as minor device 64, and + * therefore other ports should should only use 65 upwards. + * + * Richard Lucock 28/12/99 + * + * Copyright (C) 1991, 1992 Linus Torvalds + * Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, + * 1998, 1999 Theodore Ts'o + * + */ + +/* + * Serial driver configuration section. Here are the various options: + * + * SERIAL_PARANOIA_CHECK + * Check the magic number for the async_structure where + * ever possible. + */ + +#include + +#undef SERIAL_PARANOIA_CHECK +#define SERIAL_DO_RESTART + +/* Set of debugging defines */ + +#undef SERIAL_DEBUG_INTR +#undef SERIAL_DEBUG_OPEN +#undef SERIAL_DEBUG_FLOW +#undef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT + +/* Sanity checks */ + +#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT) +#define DBG_CNT(s) printk("(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \ + tty->name, (info->flags), serial_driver->refcount,info->count,tty->count,s) +#else +#define DBG_CNT(s) +#endif + +/* + * End of serial driver configuration section. + */ + +#include + +#include +#include +#include +#include +static char *serial_version = "4.30"; + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include + +#include +#include + +#define custom amiga_custom +static char *serial_name = "Amiga-builtin serial driver"; + +static struct tty_driver *serial_driver; + +/* number of characters left in xmit buffer before we ask for more */ +#define WAKEUP_CHARS 256 + +static struct async_struct *IRQ_ports; + +static unsigned char current_ctl_bits; + +static void change_speed(struct async_struct *info, struct ktermios *old); +static void rs_wait_until_sent(struct tty_struct *tty, int timeout); + + +static struct serial_state rs_table[1]; + +#define NR_PORTS ARRAY_SIZE(rs_table) + +#include + +#define serial_isroot() (capable(CAP_SYS_ADMIN)) + + +static inline int serial_paranoia_check(struct async_struct *info, + char *name, const char *routine) +{ +#ifdef SERIAL_PARANOIA_CHECK + static const char *badmagic = + "Warning: bad magic number for serial struct (%s) in %s\n"; + static const char *badinfo = + "Warning: null async_struct for (%s) in %s\n"; + + if (!info) { + printk(badinfo, name, routine); + return 1; + } + if (info->magic != SERIAL_MAGIC) { + printk(badmagic, name, routine); + return 1; + } +#endif + return 0; +} + +/* some serial hardware definitions */ +#define SDR_OVRUN (1<<15) +#define SDR_RBF (1<<14) +#define SDR_TBE (1<<13) +#define SDR_TSRE (1<<12) + +#define SERPER_PARENB (1<<15) + +#define AC_SETCLR (1<<15) +#define AC_UARTBRK (1<<11) + +#define SER_DTR (1<<7) +#define SER_RTS (1<<6) +#define SER_DCD (1<<5) +#define SER_CTS (1<<4) +#define SER_DSR (1<<3) + +static __inline__ void rtsdtr_ctrl(int bits) +{ + ciab.pra = ((bits & (SER_RTS | SER_DTR)) ^ (SER_RTS | SER_DTR)) | (ciab.pra & ~(SER_RTS | SER_DTR)); +} + +/* + * ------------------------------------------------------------ + * rs_stop() and rs_start() + * + * This routines are called before setting or resetting tty->stopped. + * They enable or disable transmitter interrupts, as necessary. + * ------------------------------------------------------------ + */ +static void rs_stop(struct tty_struct *tty) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_stop")) + return; + + local_irq_save(flags); + if (info->IER & UART_IER_THRI) { + info->IER &= ~UART_IER_THRI; + /* disable Tx interrupt and remove any pending interrupts */ + custom.intena = IF_TBE; + mb(); + custom.intreq = IF_TBE; + mb(); + } + local_irq_restore(flags); +} + +static void rs_start(struct tty_struct *tty) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_start")) + return; + + local_irq_save(flags); + if (info->xmit.head != info->xmit.tail + && info->xmit.buf + && !(info->IER & UART_IER_THRI)) { + info->IER |= UART_IER_THRI; + custom.intena = IF_SETCLR | IF_TBE; + mb(); + /* set a pending Tx Interrupt, transmitter should restart now */ + custom.intreq = IF_SETCLR | IF_TBE; + mb(); + } + local_irq_restore(flags); +} + +/* + * ---------------------------------------------------------------------- + * + * Here starts the interrupt handling routines. All of the following + * subroutines are declared as inline and are folded into + * rs_interrupt(). They were separated out for readability's sake. + * + * Note: rs_interrupt() is a "fast" interrupt, which means that it + * runs with interrupts turned off. People who may want to modify + * rs_interrupt() should try to keep the interrupt handler as fast as + * possible. After you are done making modifications, it is not a bad + * idea to do: + * + * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c + * + * and look at the resulting assemble code in serial.s. + * + * - Ted Ts'o (tytso@mit.edu), 7-Mar-93 + * ----------------------------------------------------------------------- + */ + +/* + * This routine is used by the interrupt handler to schedule + * processing in the software interrupt portion of the driver. + */ +static void rs_sched_event(struct async_struct *info, + int event) +{ + info->event |= 1 << event; + tasklet_schedule(&info->tlet); +} + +static void receive_chars(struct async_struct *info) +{ + int status; + int serdatr; + struct tty_struct *tty = info->tty; + unsigned char ch, flag; + struct async_icount *icount; + int oe = 0; + + icount = &info->state->icount; + + status = UART_LSR_DR; /* We obviously have a character! */ + serdatr = custom.serdatr; + mb(); + custom.intreq = IF_RBF; + mb(); + + if((serdatr & 0x1ff) == 0) + status |= UART_LSR_BI; + if(serdatr & SDR_OVRUN) + status |= UART_LSR_OE; + + ch = serdatr & 0xff; + icount->rx++; + +#ifdef SERIAL_DEBUG_INTR + printk("DR%02x:%02x...", ch, status); +#endif + flag = TTY_NORMAL; + + /* + * We don't handle parity or frame errors - but I have left + * the code in, since I'm not sure that the errors can't be + * detected. + */ + + if (status & (UART_LSR_BI | UART_LSR_PE | + UART_LSR_FE | UART_LSR_OE)) { + /* + * For statistics only + */ + if (status & UART_LSR_BI) { + status &= ~(UART_LSR_FE | UART_LSR_PE); + icount->brk++; + } else if (status & UART_LSR_PE) + icount->parity++; + else if (status & UART_LSR_FE) + icount->frame++; + if (status & UART_LSR_OE) + icount->overrun++; + + /* + * Now check to see if character should be + * ignored, and mask off conditions which + * should be ignored. + */ + if (status & info->ignore_status_mask) + goto out; + + status &= info->read_status_mask; + + if (status & (UART_LSR_BI)) { +#ifdef SERIAL_DEBUG_INTR + printk("handling break...."); +#endif + flag = TTY_BREAK; + if (info->flags & ASYNC_SAK) + do_SAK(tty); + } else if (status & UART_LSR_PE) + flag = TTY_PARITY; + else if (status & UART_LSR_FE) + flag = TTY_FRAME; + if (status & UART_LSR_OE) { + /* + * Overrun is special, since it's + * reported immediately, and doesn't + * affect the current character + */ + oe = 1; + } + } + tty_insert_flip_char(tty, ch, flag); + if (oe == 1) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + tty_flip_buffer_push(tty); +out: + return; +} + +static void transmit_chars(struct async_struct *info) +{ + custom.intreq = IF_TBE; + mb(); + if (info->x_char) { + custom.serdat = info->x_char | 0x100; + mb(); + info->state->icount.tx++; + info->x_char = 0; + return; + } + if (info->xmit.head == info->xmit.tail + || info->tty->stopped + || info->tty->hw_stopped) { + info->IER &= ~UART_IER_THRI; + custom.intena = IF_TBE; + mb(); + return; + } + + custom.serdat = info->xmit.buf[info->xmit.tail++] | 0x100; + mb(); + info->xmit.tail = info->xmit.tail & (SERIAL_XMIT_SIZE-1); + info->state->icount.tx++; + + if (CIRC_CNT(info->xmit.head, + info->xmit.tail, + SERIAL_XMIT_SIZE) < WAKEUP_CHARS) + rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); + +#ifdef SERIAL_DEBUG_INTR + printk("THRE..."); +#endif + if (info->xmit.head == info->xmit.tail) { + custom.intena = IF_TBE; + mb(); + info->IER &= ~UART_IER_THRI; + } +} + +static void check_modem_status(struct async_struct *info) +{ + unsigned char status = ciab.pra & (SER_DCD | SER_CTS | SER_DSR); + unsigned char dstatus; + struct async_icount *icount; + + /* Determine bits that have changed */ + dstatus = status ^ current_ctl_bits; + current_ctl_bits = status; + + if (dstatus) { + icount = &info->state->icount; + /* update input line counters */ + if (dstatus & SER_DSR) + icount->dsr++; + if (dstatus & SER_DCD) { + icount->dcd++; +#ifdef CONFIG_HARD_PPS + if ((info->flags & ASYNC_HARDPPS_CD) && + !(status & SER_DCD)) + hardpps(); +#endif + } + if (dstatus & SER_CTS) + icount->cts++; + wake_up_interruptible(&info->delta_msr_wait); + } + + if ((info->flags & ASYNC_CHECK_CD) && (dstatus & SER_DCD)) { +#if (defined(SERIAL_DEBUG_OPEN) || defined(SERIAL_DEBUG_INTR)) + printk("ttyS%d CD now %s...", info->line, + (!(status & SER_DCD)) ? "on" : "off"); +#endif + if (!(status & SER_DCD)) + wake_up_interruptible(&info->open_wait); + else { +#ifdef SERIAL_DEBUG_OPEN + printk("doing serial hangup..."); +#endif + if (info->tty) + tty_hangup(info->tty); + } + } + if (info->flags & ASYNC_CTS_FLOW) { + if (info->tty->hw_stopped) { + if (!(status & SER_CTS)) { +#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) + printk("CTS tx start..."); +#endif + info->tty->hw_stopped = 0; + info->IER |= UART_IER_THRI; + custom.intena = IF_SETCLR | IF_TBE; + mb(); + /* set a pending Tx Interrupt, transmitter should restart now */ + custom.intreq = IF_SETCLR | IF_TBE; + mb(); + rs_sched_event(info, RS_EVENT_WRITE_WAKEUP); + return; + } + } else { + if ((status & SER_CTS)) { +#if (defined(SERIAL_DEBUG_INTR) || defined(SERIAL_DEBUG_FLOW)) + printk("CTS tx stop..."); +#endif + info->tty->hw_stopped = 1; + info->IER &= ~UART_IER_THRI; + /* disable Tx interrupt and remove any pending interrupts */ + custom.intena = IF_TBE; + mb(); + custom.intreq = IF_TBE; + mb(); + } + } + } +} + +static irqreturn_t ser_vbl_int( int irq, void *data) +{ + /* vbl is just a periodic interrupt we tie into to update modem status */ + struct async_struct * info = IRQ_ports; + /* + * TBD - is it better to unregister from this interrupt or to + * ignore it if MSI is clear ? + */ + if(info->IER & UART_IER_MSI) + check_modem_status(info); + return IRQ_HANDLED; +} + +static irqreturn_t ser_rx_int(int irq, void *dev_id) +{ + struct async_struct * info; + +#ifdef SERIAL_DEBUG_INTR + printk("ser_rx_int..."); +#endif + + info = IRQ_ports; + if (!info || !info->tty) + return IRQ_NONE; + + receive_chars(info); + info->last_active = jiffies; +#ifdef SERIAL_DEBUG_INTR + printk("end.\n"); +#endif + return IRQ_HANDLED; +} + +static irqreturn_t ser_tx_int(int irq, void *dev_id) +{ + struct async_struct * info; + + if (custom.serdatr & SDR_TBE) { +#ifdef SERIAL_DEBUG_INTR + printk("ser_tx_int..."); +#endif + + info = IRQ_ports; + if (!info || !info->tty) + return IRQ_NONE; + + transmit_chars(info); + info->last_active = jiffies; +#ifdef SERIAL_DEBUG_INTR + printk("end.\n"); +#endif + } + return IRQ_HANDLED; +} + +/* + * ------------------------------------------------------------------- + * Here ends the serial interrupt routines. + * ------------------------------------------------------------------- + */ + +/* + * This routine is used to handle the "bottom half" processing for the + * serial driver, known also the "software interrupt" processing. + * This processing is done at the kernel interrupt level, after the + * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This + * is where time-consuming activities which can not be done in the + * interrupt driver proper are done; the interrupt driver schedules + * them using rs_sched_event(), and they get done here. + */ + +static void do_softint(unsigned long private_) +{ + struct async_struct *info = (struct async_struct *) private_; + struct tty_struct *tty; + + tty = info->tty; + if (!tty) + return; + + if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) + tty_wakeup(tty); +} + +/* + * --------------------------------------------------------------- + * Low level utility subroutines for the serial driver: routines to + * figure out the appropriate timeout for an interrupt chain, routines + * to initialize and startup a serial port, and routines to shutdown a + * serial port. Useful stuff like that. + * --------------------------------------------------------------- + */ + +static int startup(struct async_struct * info) +{ + unsigned long flags; + int retval=0; + unsigned long page; + + page = get_zeroed_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + local_irq_save(flags); + + if (info->flags & ASYNC_INITIALIZED) { + free_page(page); + goto errout; + } + + if (info->xmit.buf) + free_page(page); + else + info->xmit.buf = (unsigned char *) page; + +#ifdef SERIAL_DEBUG_OPEN + printk("starting up ttys%d ...", info->line); +#endif + + /* Clear anything in the input buffer */ + + custom.intreq = IF_RBF; + mb(); + + retval = request_irq(IRQ_AMIGA_VERTB, ser_vbl_int, 0, "serial status", info); + if (retval) { + if (serial_isroot()) { + if (info->tty) + set_bit(TTY_IO_ERROR, + &info->tty->flags); + retval = 0; + } + goto errout; + } + + /* enable both Rx and Tx interrupts */ + custom.intena = IF_SETCLR | IF_RBF | IF_TBE; + mb(); + info->IER = UART_IER_MSI; + + /* remember current state of the DCD and CTS bits */ + current_ctl_bits = ciab.pra & (SER_DCD | SER_CTS | SER_DSR); + + IRQ_ports = info; + + info->MCR = 0; + if (info->tty->termios->c_cflag & CBAUD) + info->MCR = SER_DTR | SER_RTS; + rtsdtr_ctrl(info->MCR); + + if (info->tty) + clear_bit(TTY_IO_ERROR, &info->tty->flags); + info->xmit.head = info->xmit.tail = 0; + + /* + * Set up the tty->alt_speed kludge + */ + if (info->tty) { + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + info->tty->alt_speed = 57600; + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + info->tty->alt_speed = 115200; + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + info->tty->alt_speed = 230400; + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + info->tty->alt_speed = 460800; + } + + /* + * and set the speed of the serial port + */ + change_speed(info, NULL); + + info->flags |= ASYNC_INITIALIZED; + local_irq_restore(flags); + return 0; + +errout: + local_irq_restore(flags); + return retval; +} + +/* + * This routine will shutdown a serial port; interrupts are disabled, and + * DTR is dropped if the hangup on close termio flag is on. + */ +static void shutdown(struct async_struct * info) +{ + unsigned long flags; + struct serial_state *state; + + if (!(info->flags & ASYNC_INITIALIZED)) + return; + + state = info->state; + +#ifdef SERIAL_DEBUG_OPEN + printk("Shutting down serial port %d ....\n", info->line); +#endif + + local_irq_save(flags); /* Disable interrupts */ + + /* + * clear delta_msr_wait queue to avoid mem leaks: we may free the irq + * here so the queue might never be waken up + */ + wake_up_interruptible(&info->delta_msr_wait); + + IRQ_ports = NULL; + + /* + * Free the IRQ, if necessary + */ + free_irq(IRQ_AMIGA_VERTB, info); + + if (info->xmit.buf) { + free_page((unsigned long) info->xmit.buf); + info->xmit.buf = NULL; + } + + info->IER = 0; + custom.intena = IF_RBF | IF_TBE; + mb(); + + /* disable break condition */ + custom.adkcon = AC_UARTBRK; + mb(); + + if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) + info->MCR &= ~(SER_DTR|SER_RTS); + rtsdtr_ctrl(info->MCR); + + if (info->tty) + set_bit(TTY_IO_ERROR, &info->tty->flags); + + info->flags &= ~ASYNC_INITIALIZED; + local_irq_restore(flags); +} + + +/* + * This routine is called to set the UART divisor registers to match + * the specified baud rate for a serial port. + */ +static void change_speed(struct async_struct *info, + struct ktermios *old_termios) +{ + int quot = 0, baud_base, baud; + unsigned cflag, cval = 0; + int bits; + unsigned long flags; + + if (!info->tty || !info->tty->termios) + return; + cflag = info->tty->termios->c_cflag; + + /* Byte size is always 8 bits plus parity bit if requested */ + + cval = 3; bits = 10; + if (cflag & CSTOPB) { + cval |= 0x04; + bits++; + } + if (cflag & PARENB) { + cval |= UART_LCR_PARITY; + bits++; + } + if (!(cflag & PARODD)) + cval |= UART_LCR_EPAR; +#ifdef CMSPAR + if (cflag & CMSPAR) + cval |= UART_LCR_SPAR; +#endif + + /* Determine divisor based on baud rate */ + baud = tty_get_baud_rate(info->tty); + if (!baud) + baud = 9600; /* B0 transition handled in rs_set_termios */ + baud_base = info->state->baud_base; + if (baud == 38400 && + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) + quot = info->state->custom_divisor; + else { + if (baud == 134) + /* Special case since 134 is really 134.5 */ + quot = (2*baud_base / 269); + else if (baud) + quot = baud_base / baud; + } + /* If the quotient is zero refuse the change */ + if (!quot && old_termios) { + /* FIXME: Will need updating for new tty in the end */ + info->tty->termios->c_cflag &= ~CBAUD; + info->tty->termios->c_cflag |= (old_termios->c_cflag & CBAUD); + baud = tty_get_baud_rate(info->tty); + if (!baud) + baud = 9600; + if (baud == 38400 && + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) + quot = info->state->custom_divisor; + else { + if (baud == 134) + /* Special case since 134 is really 134.5 */ + quot = (2*baud_base / 269); + else if (baud) + quot = baud_base / baud; + } + } + /* As a last resort, if the quotient is zero, default to 9600 bps */ + if (!quot) + quot = baud_base / 9600; + info->quot = quot; + info->timeout = ((info->xmit_fifo_size*HZ*bits*quot) / baud_base); + info->timeout += HZ/50; /* Add .02 seconds of slop */ + + /* CTS flow control flag and modem status interrupts */ + info->IER &= ~UART_IER_MSI; + if (info->flags & ASYNC_HARDPPS_CD) + info->IER |= UART_IER_MSI; + if (cflag & CRTSCTS) { + info->flags |= ASYNC_CTS_FLOW; + info->IER |= UART_IER_MSI; + } else + info->flags &= ~ASYNC_CTS_FLOW; + if (cflag & CLOCAL) + info->flags &= ~ASYNC_CHECK_CD; + else { + info->flags |= ASYNC_CHECK_CD; + info->IER |= UART_IER_MSI; + } + /* TBD: + * Does clearing IER_MSI imply that we should disable the VBL interrupt ? + */ + + /* + * Set up parity check flag + */ + + info->read_status_mask = UART_LSR_OE | UART_LSR_DR; + if (I_INPCK(info->tty)) + info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; + if (I_BRKINT(info->tty) || I_PARMRK(info->tty)) + info->read_status_mask |= UART_LSR_BI; + + /* + * Characters to ignore + */ + info->ignore_status_mask = 0; + if (I_IGNPAR(info->tty)) + info->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; + if (I_IGNBRK(info->tty)) { + info->ignore_status_mask |= UART_LSR_BI; + /* + * If we're ignore parity and break indicators, ignore + * overruns too. (For real raw support). + */ + if (I_IGNPAR(info->tty)) + info->ignore_status_mask |= UART_LSR_OE; + } + /* + * !!! ignore all characters if CREAD is not set + */ + if ((cflag & CREAD) == 0) + info->ignore_status_mask |= UART_LSR_DR; + local_irq_save(flags); + + { + short serper; + + /* Set up the baud rate */ + serper = quot - 1; + + /* Enable or disable parity bit */ + + if(cval & UART_LCR_PARITY) + serper |= (SERPER_PARENB); + + custom.serper = serper; + mb(); + } + + info->LCR = cval; /* Save LCR */ + local_irq_restore(flags); +} + +static int rs_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct async_struct *info; + unsigned long flags; + + info = tty->driver_data; + + if (serial_paranoia_check(info, tty->name, "rs_put_char")) + return 0; + + if (!info->xmit.buf) + return 0; + + local_irq_save(flags); + if (CIRC_SPACE(info->xmit.head, + info->xmit.tail, + SERIAL_XMIT_SIZE) == 0) { + local_irq_restore(flags); + return 0; + } + + info->xmit.buf[info->xmit.head++] = ch; + info->xmit.head &= SERIAL_XMIT_SIZE-1; + local_irq_restore(flags); + return 1; +} + +static void rs_flush_chars(struct tty_struct *tty) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_flush_chars")) + return; + + if (info->xmit.head == info->xmit.tail + || tty->stopped + || tty->hw_stopped + || !info->xmit.buf) + return; + + local_irq_save(flags); + info->IER |= UART_IER_THRI; + custom.intena = IF_SETCLR | IF_TBE; + mb(); + /* set a pending Tx Interrupt, transmitter should restart now */ + custom.intreq = IF_SETCLR | IF_TBE; + mb(); + local_irq_restore(flags); +} + +static int rs_write(struct tty_struct * tty, const unsigned char *buf, int count) +{ + int c, ret = 0; + struct async_struct *info; + unsigned long flags; + + info = tty->driver_data; + + if (serial_paranoia_check(info, tty->name, "rs_write")) + return 0; + + if (!info->xmit.buf) + return 0; + + local_irq_save(flags); + while (1) { + c = CIRC_SPACE_TO_END(info->xmit.head, + info->xmit.tail, + SERIAL_XMIT_SIZE); + if (count < c) + c = count; + if (c <= 0) { + break; + } + memcpy(info->xmit.buf + info->xmit.head, buf, c); + info->xmit.head = ((info->xmit.head + c) & + (SERIAL_XMIT_SIZE-1)); + buf += c; + count -= c; + ret += c; + } + local_irq_restore(flags); + + if (info->xmit.head != info->xmit.tail + && !tty->stopped + && !tty->hw_stopped + && !(info->IER & UART_IER_THRI)) { + info->IER |= UART_IER_THRI; + local_irq_disable(); + custom.intena = IF_SETCLR | IF_TBE; + mb(); + /* set a pending Tx Interrupt, transmitter should restart now */ + custom.intreq = IF_SETCLR | IF_TBE; + mb(); + local_irq_restore(flags); + } + return ret; +} + +static int rs_write_room(struct tty_struct *tty) +{ + struct async_struct *info = tty->driver_data; + + if (serial_paranoia_check(info, tty->name, "rs_write_room")) + return 0; + return CIRC_SPACE(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); +} + +static int rs_chars_in_buffer(struct tty_struct *tty) +{ + struct async_struct *info = tty->driver_data; + + if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer")) + return 0; + return CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE); +} + +static void rs_flush_buffer(struct tty_struct *tty) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_flush_buffer")) + return; + local_irq_save(flags); + info->xmit.head = info->xmit.tail = 0; + local_irq_restore(flags); + tty_wakeup(tty); +} + +/* + * This function is used to send a high-priority XON/XOFF character to + * the device + */ +static void rs_send_xchar(struct tty_struct *tty, char ch) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_send_char")) + return; + + info->x_char = ch; + if (ch) { + /* Make sure transmit interrupts are on */ + + /* Check this ! */ + local_irq_save(flags); + if(!(custom.intenar & IF_TBE)) { + custom.intena = IF_SETCLR | IF_TBE; + mb(); + /* set a pending Tx Interrupt, transmitter should restart now */ + custom.intreq = IF_SETCLR | IF_TBE; + mb(); + } + local_irq_restore(flags); + + info->IER |= UART_IER_THRI; + } +} + +/* + * ------------------------------------------------------------ + * rs_throttle() + * + * This routine is called by the upper-layer tty layer to signal that + * incoming characters should be throttled. + * ------------------------------------------------------------ + */ +static void rs_throttle(struct tty_struct * tty) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; +#ifdef SERIAL_DEBUG_THROTTLE + char buf[64]; + + printk("throttle %s: %d....\n", tty_name(tty, buf), + tty->ldisc.chars_in_buffer(tty)); +#endif + + if (serial_paranoia_check(info, tty->name, "rs_throttle")) + return; + + if (I_IXOFF(tty)) + rs_send_xchar(tty, STOP_CHAR(tty)); + + if (tty->termios->c_cflag & CRTSCTS) + info->MCR &= ~SER_RTS; + + local_irq_save(flags); + rtsdtr_ctrl(info->MCR); + local_irq_restore(flags); +} + +static void rs_unthrottle(struct tty_struct * tty) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; +#ifdef SERIAL_DEBUG_THROTTLE + char buf[64]; + + printk("unthrottle %s: %d....\n", tty_name(tty, buf), + tty->ldisc.chars_in_buffer(tty)); +#endif + + if (serial_paranoia_check(info, tty->name, "rs_unthrottle")) + return; + + if (I_IXOFF(tty)) { + if (info->x_char) + info->x_char = 0; + else + rs_send_xchar(tty, START_CHAR(tty)); + } + if (tty->termios->c_cflag & CRTSCTS) + info->MCR |= SER_RTS; + local_irq_save(flags); + rtsdtr_ctrl(info->MCR); + local_irq_restore(flags); +} + +/* + * ------------------------------------------------------------ + * rs_ioctl() and friends + * ------------------------------------------------------------ + */ + +static int get_serial_info(struct async_struct * info, + struct serial_struct __user * retinfo) +{ + struct serial_struct tmp; + struct serial_state *state = info->state; + + if (!retinfo) + return -EFAULT; + memset(&tmp, 0, sizeof(tmp)); + tty_lock(); + tmp.type = state->type; + tmp.line = state->line; + tmp.port = state->port; + tmp.irq = state->irq; + tmp.flags = state->flags; + tmp.xmit_fifo_size = state->xmit_fifo_size; + tmp.baud_base = state->baud_base; + tmp.close_delay = state->close_delay; + tmp.closing_wait = state->closing_wait; + tmp.custom_divisor = state->custom_divisor; + tty_unlock(); + if (copy_to_user(retinfo,&tmp,sizeof(*retinfo))) + return -EFAULT; + return 0; +} + +static int set_serial_info(struct async_struct * info, + struct serial_struct __user * new_info) +{ + struct serial_struct new_serial; + struct serial_state old_state, *state; + unsigned int change_irq,change_port; + int retval = 0; + + if (copy_from_user(&new_serial,new_info,sizeof(new_serial))) + return -EFAULT; + + tty_lock(); + state = info->state; + old_state = *state; + + change_irq = new_serial.irq != state->irq; + change_port = (new_serial.port != state->port); + if(change_irq || change_port || (new_serial.xmit_fifo_size != state->xmit_fifo_size)) { + tty_unlock(); + return -EINVAL; + } + + if (!serial_isroot()) { + if ((new_serial.baud_base != state->baud_base) || + (new_serial.close_delay != state->close_delay) || + (new_serial.xmit_fifo_size != state->xmit_fifo_size) || + ((new_serial.flags & ~ASYNC_USR_MASK) != + (state->flags & ~ASYNC_USR_MASK))) + return -EPERM; + state->flags = ((state->flags & ~ASYNC_USR_MASK) | + (new_serial.flags & ASYNC_USR_MASK)); + info->flags = ((info->flags & ~ASYNC_USR_MASK) | + (new_serial.flags & ASYNC_USR_MASK)); + state->custom_divisor = new_serial.custom_divisor; + goto check_and_exit; + } + + if (new_serial.baud_base < 9600) { + tty_unlock(); + return -EINVAL; + } + + /* + * OK, past this point, all the error checking has been done. + * At this point, we start making changes..... + */ + + state->baud_base = new_serial.baud_base; + state->flags = ((state->flags & ~ASYNC_FLAGS) | + (new_serial.flags & ASYNC_FLAGS)); + info->flags = ((state->flags & ~ASYNC_INTERNAL_FLAGS) | + (info->flags & ASYNC_INTERNAL_FLAGS)); + state->custom_divisor = new_serial.custom_divisor; + state->close_delay = new_serial.close_delay * HZ/100; + state->closing_wait = new_serial.closing_wait * HZ/100; + info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; + +check_and_exit: + if (info->flags & ASYNC_INITIALIZED) { + if (((old_state.flags & ASYNC_SPD_MASK) != + (state->flags & ASYNC_SPD_MASK)) || + (old_state.custom_divisor != state->custom_divisor)) { + if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + info->tty->alt_speed = 57600; + if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + info->tty->alt_speed = 115200; + if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + info->tty->alt_speed = 230400; + if ((state->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + info->tty->alt_speed = 460800; + change_speed(info, NULL); + } + } else + retval = startup(info); + tty_unlock(); + return retval; +} + + +/* + * get_lsr_info - get line status register info + * + * Purpose: Let user call ioctl() to get info when the UART physically + * is emptied. On bus types like RS485, the transmitter must + * release the bus after transmitting. This must be done when + * the transmit shift register is empty, not be done when the + * transmit holding register is empty. This functionality + * allows an RS485 driver to be written in user space. + */ +static int get_lsr_info(struct async_struct * info, unsigned int __user *value) +{ + unsigned char status; + unsigned int result; + unsigned long flags; + + local_irq_save(flags); + status = custom.serdatr; + mb(); + local_irq_restore(flags); + result = ((status & SDR_TSRE) ? TIOCSER_TEMT : 0); + if (copy_to_user(value, &result, sizeof(int))) + return -EFAULT; + return 0; +} + + +static int rs_tiocmget(struct tty_struct *tty) +{ + struct async_struct * info = tty->driver_data; + unsigned char control, status; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_ioctl")) + return -ENODEV; + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + + control = info->MCR; + local_irq_save(flags); + status = ciab.pra; + local_irq_restore(flags); + return ((control & SER_RTS) ? TIOCM_RTS : 0) + | ((control & SER_DTR) ? TIOCM_DTR : 0) + | (!(status & SER_DCD) ? TIOCM_CAR : 0) + | (!(status & SER_DSR) ? TIOCM_DSR : 0) + | (!(status & SER_CTS) ? TIOCM_CTS : 0); +} + +static int rs_tiocmset(struct tty_struct *tty, unsigned int set, + unsigned int clear) +{ + struct async_struct * info = tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_ioctl")) + return -ENODEV; + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + + local_irq_save(flags); + if (set & TIOCM_RTS) + info->MCR |= SER_RTS; + if (set & TIOCM_DTR) + info->MCR |= SER_DTR; + if (clear & TIOCM_RTS) + info->MCR &= ~SER_RTS; + if (clear & TIOCM_DTR) + info->MCR &= ~SER_DTR; + rtsdtr_ctrl(info->MCR); + local_irq_restore(flags); + return 0; +} + +/* + * rs_break() --- routine which turns the break handling on or off + */ +static int rs_break(struct tty_struct *tty, int break_state) +{ + struct async_struct * info = tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_break")) + return -EINVAL; + + local_irq_save(flags); + if (break_state == -1) + custom.adkcon = AC_SETCLR | AC_UARTBRK; + else + custom.adkcon = AC_UARTBRK; + mb(); + local_irq_restore(flags); + return 0; +} + +/* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ +static int rs_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct async_struct *info = tty->driver_data; + struct async_icount cnow; + unsigned long flags; + + local_irq_save(flags); + cnow = info->state->icount; + local_irq_restore(flags); + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + +static int rs_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct async_struct * info = tty->driver_data; + struct async_icount cprev, cnow; /* kernel counter temps */ + void __user *argp = (void __user *)arg; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "rs_ioctl")) + return -ENODEV; + + if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && + (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) && + (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + } + + switch (cmd) { + case TIOCGSERIAL: + return get_serial_info(info, argp); + case TIOCSSERIAL: + return set_serial_info(info, argp); + case TIOCSERCONFIG: + return 0; + + case TIOCSERGETLSR: /* Get line status register */ + return get_lsr_info(info, argp); + + case TIOCSERGSTRUCT: + if (copy_to_user(argp, + info, sizeof(struct async_struct))) + return -EFAULT; + return 0; + + /* + * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change + * - mask passed in arg for lines of interest + * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) + * Caller should use TIOCGICOUNT to see which one it was + */ + case TIOCMIWAIT: + local_irq_save(flags); + /* note the counters on entry */ + cprev = info->state->icount; + local_irq_restore(flags); + while (1) { + interruptible_sleep_on(&info->delta_msr_wait); + /* see if a signal did it */ + if (signal_pending(current)) + return -ERESTARTSYS; + local_irq_save(flags); + cnow = info->state->icount; /* atomic copy */ + local_irq_restore(flags); + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) + return -EIO; /* no change => error */ + if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || + ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || + ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || + ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { + return 0; + } + cprev = cnow; + } + /* NOTREACHED */ + + case TIOCSERGWILD: + case TIOCSERSWILD: + /* "setserial -W" is called in Debian boot */ + printk ("TIOCSER?WILD ioctl obsolete, ignored.\n"); + return 0; + + default: + return -ENOIOCTLCMD; + } + return 0; +} + +static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + struct async_struct *info = tty->driver_data; + unsigned long flags; + unsigned int cflag = tty->termios->c_cflag; + + change_speed(info, old_termios); + + /* Handle transition to B0 status */ + if ((old_termios->c_cflag & CBAUD) && + !(cflag & CBAUD)) { + info->MCR &= ~(SER_DTR|SER_RTS); + local_irq_save(flags); + rtsdtr_ctrl(info->MCR); + local_irq_restore(flags); + } + + /* Handle transition away from B0 status */ + if (!(old_termios->c_cflag & CBAUD) && + (cflag & CBAUD)) { + info->MCR |= SER_DTR; + if (!(tty->termios->c_cflag & CRTSCTS) || + !test_bit(TTY_THROTTLED, &tty->flags)) { + info->MCR |= SER_RTS; + } + local_irq_save(flags); + rtsdtr_ctrl(info->MCR); + local_irq_restore(flags); + } + + /* Handle turning off CRTSCTS */ + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + rs_start(tty); + } + +#if 0 + /* + * No need to wake up processes in open wait, since they + * sample the CLOCAL flag once, and don't recheck it. + * XXX It's not clear whether the current behavior is correct + * or not. Hence, this may change..... + */ + if (!(old_termios->c_cflag & CLOCAL) && + (tty->termios->c_cflag & CLOCAL)) + wake_up_interruptible(&info->open_wait); +#endif +} + +/* + * ------------------------------------------------------------ + * rs_close() + * + * This routine is called when the serial port gets closed. First, we + * wait for the last remaining data to be sent. Then, we unlink its + * async structure from the interrupt chain if necessary, and we free + * that IRQ if nothing is left in the chain. + * ------------------------------------------------------------ + */ +static void rs_close(struct tty_struct *tty, struct file * filp) +{ + struct async_struct * info = tty->driver_data; + struct serial_state *state; + unsigned long flags; + + if (!info || serial_paranoia_check(info, tty->name, "rs_close")) + return; + + state = info->state; + + local_irq_save(flags); + + if (tty_hung_up_p(filp)) { + DBG_CNT("before DEC-hung"); + local_irq_restore(flags); + return; + } + +#ifdef SERIAL_DEBUG_OPEN + printk("rs_close ttys%d, count = %d\n", info->line, state->count); +#endif + if ((tty->count == 1) && (state->count != 1)) { + /* + * Uh, oh. tty->count is 1, which means that the tty + * structure will be freed. state->count should always + * be one in these conditions. If it's greater than + * one, we've got real problems, since it means the + * serial port won't be shutdown. + */ + printk("rs_close: bad serial port count; tty->count is 1, " + "state->count is %d\n", state->count); + state->count = 1; + } + if (--state->count < 0) { + printk("rs_close: bad serial port count for ttys%d: %d\n", + info->line, state->count); + state->count = 0; + } + if (state->count) { + DBG_CNT("before DEC-2"); + local_irq_restore(flags); + return; + } + info->flags |= ASYNC_CLOSING; + /* + * Now we wait for the transmit buffer to clear; and we notify + * the line discipline to only process XON/XOFF characters. + */ + tty->closing = 1; + if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) + tty_wait_until_sent(tty, info->closing_wait); + /* + * At this point we stop accepting input. To do this, we + * disable the receive line status interrupts, and tell the + * interrupt driver to stop checking the data ready bit in the + * line status register. + */ + info->read_status_mask &= ~UART_LSR_DR; + if (info->flags & ASYNC_INITIALIZED) { + /* disable receive interrupts */ + custom.intena = IF_RBF; + mb(); + /* clear any pending receive interrupt */ + custom.intreq = IF_RBF; + mb(); + + /* + * Before we drop DTR, make sure the UART transmitter + * has completely drained; this is especially + * important if there is a transmit FIFO! + */ + rs_wait_until_sent(tty, info->timeout); + } + shutdown(info); + rs_flush_buffer(tty); + + tty_ldisc_flush(tty); + tty->closing = 0; + info->event = 0; + info->tty = NULL; + if (info->blocked_open) { + if (info->close_delay) { + msleep_interruptible(jiffies_to_msecs(info->close_delay)); + } + wake_up_interruptible(&info->open_wait); + } + info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); + wake_up_interruptible(&info->close_wait); + local_irq_restore(flags); +} + +/* + * rs_wait_until_sent() --- wait until the transmitter is empty + */ +static void rs_wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct async_struct * info = tty->driver_data; + unsigned long orig_jiffies, char_time; + int tty_was_locked = tty_locked(); + int lsr; + + if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent")) + return; + + if (info->xmit_fifo_size == 0) + return; /* Just in case.... */ + + orig_jiffies = jiffies; + + /* + * tty_wait_until_sent is called from lots of places, + * with or without the BTM. + */ + if (!tty_was_locked) + tty_lock(); + /* + * Set the check interval to be 1/5 of the estimated time to + * send a single character, and make it at least 1. The check + * interval should also be less than the timeout. + * + * Note: we have to use pretty tight timings here to satisfy + * the NIST-PCTS. + */ + char_time = (info->timeout - HZ/50) / info->xmit_fifo_size; + char_time = char_time / 5; + if (char_time == 0) + char_time = 1; + if (timeout) + char_time = min_t(unsigned long, char_time, timeout); + /* + * If the transmitter hasn't cleared in twice the approximate + * amount of time to send the entire FIFO, it probably won't + * ever clear. This assumes the UART isn't doing flow + * control, which is currently the case. Hence, if it ever + * takes longer than info->timeout, this is probably due to a + * UART bug of some kind. So, we clamp the timeout parameter at + * 2*info->timeout. + */ + if (!timeout || timeout > 2*info->timeout) + timeout = 2*info->timeout; +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT + printk("In rs_wait_until_sent(%d) check=%lu...", timeout, char_time); + printk("jiff=%lu...", jiffies); +#endif + while(!((lsr = custom.serdatr) & SDR_TSRE)) { +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT + printk("serdatr = %d (jiff=%lu)...", lsr, jiffies); +#endif + msleep_interruptible(jiffies_to_msecs(char_time)); + if (signal_pending(current)) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } + __set_current_state(TASK_RUNNING); + if (!tty_was_locked) + tty_unlock(); +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT + printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); +#endif +} + +/* + * rs_hangup() --- called by tty_hangup() when a hangup is signaled. + */ +static void rs_hangup(struct tty_struct *tty) +{ + struct async_struct * info = tty->driver_data; + struct serial_state *state = info->state; + + if (serial_paranoia_check(info, tty->name, "rs_hangup")) + return; + + state = info->state; + + rs_flush_buffer(tty); + shutdown(info); + info->event = 0; + state->count = 0; + info->flags &= ~ASYNC_NORMAL_ACTIVE; + info->tty = NULL; + wake_up_interruptible(&info->open_wait); +} + +/* + * ------------------------------------------------------------ + * rs_open() and friends + * ------------------------------------------------------------ + */ +static int block_til_ready(struct tty_struct *tty, struct file * filp, + struct async_struct *info) +{ +#ifdef DECLARE_WAITQUEUE + DECLARE_WAITQUEUE(wait, current); +#else + struct wait_queue wait = { current, NULL }; +#endif + struct serial_state *state = info->state; + int retval; + int do_clocal = 0, extra_count = 0; + unsigned long flags; + + /* + * If the device is in the middle of being closed, then block + * until it's done, and then try again. + */ + if (tty_hung_up_p(filp) || + (info->flags & ASYNC_CLOSING)) { + if (info->flags & ASYNC_CLOSING) + interruptible_sleep_on(&info->close_wait); +#ifdef SERIAL_DO_RESTART + return ((info->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS); +#else + return -EAGAIN; +#endif + } + + /* + * If non-blocking mode is set, or the port is not enabled, + * then make the check up front and then exit. + */ + if ((filp->f_flags & O_NONBLOCK) || + (tty->flags & (1 << TTY_IO_ERROR))) { + info->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + if (tty->termios->c_cflag & CLOCAL) + do_clocal = 1; + + /* + * Block waiting for the carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, state->count is dropped by one, so that + * rs_close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + retval = 0; + add_wait_queue(&info->open_wait, &wait); +#ifdef SERIAL_DEBUG_OPEN + printk("block_til_ready before block: ttys%d, count = %d\n", + state->line, state->count); +#endif + local_irq_save(flags); + if (!tty_hung_up_p(filp)) { + extra_count = 1; + state->count--; + } + local_irq_restore(flags); + info->blocked_open++; + while (1) { + local_irq_save(flags); + if (tty->termios->c_cflag & CBAUD) + rtsdtr_ctrl(SER_DTR|SER_RTS); + local_irq_restore(flags); + set_current_state(TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp) || + !(info->flags & ASYNC_INITIALIZED)) { +#ifdef SERIAL_DO_RESTART + if (info->flags & ASYNC_HUP_NOTIFY) + retval = -EAGAIN; + else + retval = -ERESTARTSYS; +#else + retval = -EAGAIN; +#endif + break; + } + if (!(info->flags & ASYNC_CLOSING) && + (do_clocal || (!(ciab.pra & SER_DCD)) )) + break; + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } +#ifdef SERIAL_DEBUG_OPEN + printk("block_til_ready blocking: ttys%d, count = %d\n", + info->line, state->count); +#endif + tty_unlock(); + schedule(); + tty_lock(); + } + __set_current_state(TASK_RUNNING); + remove_wait_queue(&info->open_wait, &wait); + if (extra_count) + state->count++; + info->blocked_open--; +#ifdef SERIAL_DEBUG_OPEN + printk("block_til_ready after blocking: ttys%d, count = %d\n", + info->line, state->count); +#endif + if (retval) + return retval; + info->flags |= ASYNC_NORMAL_ACTIVE; + return 0; +} + +static int get_async_struct(int line, struct async_struct **ret_info) +{ + struct async_struct *info; + struct serial_state *sstate; + + sstate = rs_table + line; + sstate->count++; + if (sstate->info) { + *ret_info = sstate->info; + return 0; + } + info = kzalloc(sizeof(struct async_struct), GFP_KERNEL); + if (!info) { + sstate->count--; + return -ENOMEM; + } +#ifdef DECLARE_WAITQUEUE + init_waitqueue_head(&info->open_wait); + init_waitqueue_head(&info->close_wait); + init_waitqueue_head(&info->delta_msr_wait); +#endif + info->magic = SERIAL_MAGIC; + info->port = sstate->port; + info->flags = sstate->flags; + info->xmit_fifo_size = sstate->xmit_fifo_size; + info->line = line; + tasklet_init(&info->tlet, do_softint, (unsigned long)info); + info->state = sstate; + if (sstate->info) { + kfree(info); + *ret_info = sstate->info; + return 0; + } + *ret_info = sstate->info = info; + return 0; +} + +/* + * This routine is called whenever a serial port is opened. It + * enables interrupts for a serial port, linking in its async structure into + * the IRQ chain. It also performs the serial-specific + * initialization for the tty structure. + */ +static int rs_open(struct tty_struct *tty, struct file * filp) +{ + struct async_struct *info; + int retval, line; + + line = tty->index; + if ((line < 0) || (line >= NR_PORTS)) { + return -ENODEV; + } + retval = get_async_struct(line, &info); + if (retval) { + return retval; + } + tty->driver_data = info; + info->tty = tty; + if (serial_paranoia_check(info, tty->name, "rs_open")) + return -ENODEV; + +#ifdef SERIAL_DEBUG_OPEN + printk("rs_open %s, count = %d\n", tty->name, info->state->count); +#endif + info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; + + /* + * If the port is the middle of closing, bail out now + */ + if (tty_hung_up_p(filp) || + (info->flags & ASYNC_CLOSING)) { + if (info->flags & ASYNC_CLOSING) + interruptible_sleep_on(&info->close_wait); +#ifdef SERIAL_DO_RESTART + return ((info->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS); +#else + return -EAGAIN; +#endif + } + + /* + * Start up serial port + */ + retval = startup(info); + if (retval) { + return retval; + } + + retval = block_til_ready(tty, filp, info); + if (retval) { +#ifdef SERIAL_DEBUG_OPEN + printk("rs_open returning after block_til_ready with %d\n", + retval); +#endif + return retval; + } + +#ifdef SERIAL_DEBUG_OPEN + printk("rs_open %s successful...", tty->name); +#endif + return 0; +} + +/* + * /proc fs routines.... + */ + +static inline void line_info(struct seq_file *m, struct serial_state *state) +{ + struct async_struct *info = state->info, scr_info; + char stat_buf[30], control, status; + unsigned long flags; + + seq_printf(m, "%d: uart:amiga_builtin",state->line); + + /* + * Figure out the current RS-232 lines + */ + if (!info) { + info = &scr_info; /* This is just for serial_{in,out} */ + + info->magic = SERIAL_MAGIC; + info->flags = state->flags; + info->quot = 0; + info->tty = NULL; + } + local_irq_save(flags); + status = ciab.pra; + control = info ? info->MCR : status; + local_irq_restore(flags); + + stat_buf[0] = 0; + stat_buf[1] = 0; + if(!(control & SER_RTS)) + strcat(stat_buf, "|RTS"); + if(!(status & SER_CTS)) + strcat(stat_buf, "|CTS"); + if(!(control & SER_DTR)) + strcat(stat_buf, "|DTR"); + if(!(status & SER_DSR)) + strcat(stat_buf, "|DSR"); + if(!(status & SER_DCD)) + strcat(stat_buf, "|CD"); + + if (info->quot) { + seq_printf(m, " baud:%d", state->baud_base / info->quot); + } + + seq_printf(m, " tx:%d rx:%d", state->icount.tx, state->icount.rx); + + if (state->icount.frame) + seq_printf(m, " fe:%d", state->icount.frame); + + if (state->icount.parity) + seq_printf(m, " pe:%d", state->icount.parity); + + if (state->icount.brk) + seq_printf(m, " brk:%d", state->icount.brk); + + if (state->icount.overrun) + seq_printf(m, " oe:%d", state->icount.overrun); + + /* + * Last thing is the RS-232 status lines + */ + seq_printf(m, " %s\n", stat_buf+1); +} + +static int rs_proc_show(struct seq_file *m, void *v) +{ + seq_printf(m, "serinfo:1.0 driver:%s\n", serial_version); + line_info(m, &rs_table[0]); + return 0; +} + +static int rs_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, rs_proc_show, NULL); +} + +static const struct file_operations rs_proc_fops = { + .owner = THIS_MODULE, + .open = rs_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* + * --------------------------------------------------------------------- + * rs_init() and friends + * + * rs_init() is called at boot-time to initialize the serial driver. + * --------------------------------------------------------------------- + */ + +/* + * This routine prints out the appropriate serial driver version + * number, and identifies which options were configured into this + * driver. + */ +static void show_serial_version(void) +{ + printk(KERN_INFO "%s version %s\n", serial_name, serial_version); +} + + +static const struct tty_operations serial_ops = { + .open = rs_open, + .close = rs_close, + .write = rs_write, + .put_char = rs_put_char, + .flush_chars = rs_flush_chars, + .write_room = rs_write_room, + .chars_in_buffer = rs_chars_in_buffer, + .flush_buffer = rs_flush_buffer, + .ioctl = rs_ioctl, + .throttle = rs_throttle, + .unthrottle = rs_unthrottle, + .set_termios = rs_set_termios, + .stop = rs_stop, + .start = rs_start, + .hangup = rs_hangup, + .break_ctl = rs_break, + .send_xchar = rs_send_xchar, + .wait_until_sent = rs_wait_until_sent, + .tiocmget = rs_tiocmget, + .tiocmset = rs_tiocmset, + .get_icount = rs_get_icount, + .proc_fops = &rs_proc_fops, +}; + +/* + * The serial driver boot-time initialization code! + */ +static int __init amiga_serial_probe(struct platform_device *pdev) +{ + unsigned long flags; + struct serial_state * state; + int error; + + serial_driver = alloc_tty_driver(1); + if (!serial_driver) + return -ENOMEM; + + IRQ_ports = NULL; + + show_serial_version(); + + /* Initialize the tty_driver structure */ + + serial_driver->owner = THIS_MODULE; + serial_driver->driver_name = "amiserial"; + serial_driver->name = "ttyS"; + serial_driver->major = TTY_MAJOR; + serial_driver->minor_start = 64; + serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + serial_driver->subtype = SERIAL_TYPE_NORMAL; + serial_driver->init_termios = tty_std_termios; + serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + serial_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(serial_driver, &serial_ops); + + error = tty_register_driver(serial_driver); + if (error) + goto fail_put_tty_driver; + + state = rs_table; + state->magic = SSTATE_MAGIC; + state->port = (int)&custom.serdatr; /* Just to give it a value */ + state->line = 0; + state->custom_divisor = 0; + state->close_delay = 5*HZ/10; + state->closing_wait = 30*HZ; + state->icount.cts = state->icount.dsr = + state->icount.rng = state->icount.dcd = 0; + state->icount.rx = state->icount.tx = 0; + state->icount.frame = state->icount.parity = 0; + state->icount.overrun = state->icount.brk = 0; + + printk(KERN_INFO "ttyS%d is the amiga builtin serial port\n", + state->line); + + /* Hardware set up */ + + state->baud_base = amiga_colorclock; + state->xmit_fifo_size = 1; + + /* set ISRs, and then disable the rx interrupts */ + error = request_irq(IRQ_AMIGA_TBE, ser_tx_int, 0, "serial TX", state); + if (error) + goto fail_unregister; + + error = request_irq(IRQ_AMIGA_RBF, ser_rx_int, IRQF_DISABLED, + "serial RX", state); + if (error) + goto fail_free_irq; + + local_irq_save(flags); + + /* turn off Rx and Tx interrupts */ + custom.intena = IF_RBF | IF_TBE; + mb(); + + /* clear any pending interrupt */ + custom.intreq = IF_RBF | IF_TBE; + mb(); + + local_irq_restore(flags); + + /* + * set the appropriate directions for the modem control flags, + * and clear RTS and DTR + */ + ciab.ddra |= (SER_DTR | SER_RTS); /* outputs */ + ciab.ddra &= ~(SER_DCD | SER_CTS | SER_DSR); /* inputs */ + + platform_set_drvdata(pdev, state); + + return 0; + +fail_free_irq: + free_irq(IRQ_AMIGA_TBE, state); +fail_unregister: + tty_unregister_driver(serial_driver); +fail_put_tty_driver: + put_tty_driver(serial_driver); + return error; +} + +static int __exit amiga_serial_remove(struct platform_device *pdev) +{ + int error; + struct serial_state *state = platform_get_drvdata(pdev); + struct async_struct *info = state->info; + + /* printk("Unloading %s: version %s\n", serial_name, serial_version); */ + tasklet_kill(&info->tlet); + if ((error = tty_unregister_driver(serial_driver))) + printk("SERIAL: failed to unregister serial driver (%d)\n", + error); + put_tty_driver(serial_driver); + + rs_table[0].info = NULL; + kfree(info); + + free_irq(IRQ_AMIGA_TBE, rs_table); + free_irq(IRQ_AMIGA_RBF, rs_table); + + platform_set_drvdata(pdev, NULL); + + return error; +} + +static struct platform_driver amiga_serial_driver = { + .remove = __exit_p(amiga_serial_remove), + .driver = { + .name = "amiga-serial", + .owner = THIS_MODULE, + }, +}; + +static int __init amiga_serial_init(void) +{ + return platform_driver_probe(&amiga_serial_driver, amiga_serial_probe); +} + +module_init(amiga_serial_init); + +static void __exit amiga_serial_exit(void) +{ + platform_driver_unregister(&amiga_serial_driver); +} + +module_exit(amiga_serial_exit); + + +#if defined(CONFIG_SERIAL_CONSOLE) && !defined(MODULE) + +/* + * ------------------------------------------------------------ + * Serial console driver + * ------------------------------------------------------------ + */ + +static void amiga_serial_putc(char c) +{ + custom.serdat = (unsigned char)c | 0x100; + while (!(custom.serdatr & 0x2000)) + barrier(); +} + +/* + * Print a string to the serial port trying not to disturb + * any possible real use of the port... + * + * The console must be locked when we get here. + */ +static void serial_console_write(struct console *co, const char *s, + unsigned count) +{ + unsigned short intena = custom.intenar; + + custom.intena = IF_TBE; + + while (count--) { + if (*s == '\n') + amiga_serial_putc('\r'); + amiga_serial_putc(*s++); + } + + custom.intena = IF_SETCLR | (intena & IF_TBE); +} + +static struct tty_driver *serial_console_device(struct console *c, int *index) +{ + *index = 0; + return serial_driver; +} + +static struct console sercons = { + .name = "ttyS", + .write = serial_console_write, + .device = serial_console_device, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +/* + * Register console. + */ +static int __init amiserial_console_init(void) +{ + register_console(&sercons); + return 0; +} +console_initcall(amiserial_console_init); + +#endif /* CONFIG_SERIAL_CONSOLE && !MODULE */ + +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:amiga-serial"); diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c new file mode 100644 index 000000000000..16402445f2b2 --- /dev/null +++ b/drivers/tty/bfin_jtag_comm.c @@ -0,0 +1,366 @@ +/* + * TTY over Blackfin JTAG Communication + * + * Copyright 2008-2009 Analog Devices Inc. + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +#define DRV_NAME "bfin-jtag-comm" +#define DEV_NAME "ttyBFJC" +#define pr_fmt(fmt) DRV_NAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define pr_init(fmt, args...) ({ static const __initconst char __fmt[] = fmt; printk(__fmt, ## args); }) + +/* See the Debug/Emulation chapter in the HRM */ +#define EMUDOF 0x00000001 /* EMUDAT_OUT full & valid */ +#define EMUDIF 0x00000002 /* EMUDAT_IN full & valid */ +#define EMUDOOVF 0x00000004 /* EMUDAT_OUT overflow */ +#define EMUDIOVF 0x00000008 /* EMUDAT_IN overflow */ + +static inline uint32_t bfin_write_emudat(uint32_t emudat) +{ + __asm__ __volatile__("emudat = %0;" : : "d"(emudat)); + return emudat; +} + +static inline uint32_t bfin_read_emudat(void) +{ + uint32_t emudat; + __asm__ __volatile__("%0 = emudat;" : "=d"(emudat)); + return emudat; +} + +static inline uint32_t bfin_write_emudat_chars(char a, char b, char c, char d) +{ + return bfin_write_emudat((a << 0) | (b << 8) | (c << 16) | (d << 24)); +} + +#define CIRC_SIZE 2048 /* see comment in tty_io.c:do_tty_write() */ +#define CIRC_MASK (CIRC_SIZE - 1) +#define circ_empty(circ) ((circ)->head == (circ)->tail) +#define circ_free(circ) CIRC_SPACE((circ)->head, (circ)->tail, CIRC_SIZE) +#define circ_cnt(circ) CIRC_CNT((circ)->head, (circ)->tail, CIRC_SIZE) +#define circ_byte(circ, idx) ((circ)->buf[(idx) & CIRC_MASK]) + +static struct tty_driver *bfin_jc_driver; +static struct task_struct *bfin_jc_kthread; +static struct tty_struct * volatile bfin_jc_tty; +static unsigned long bfin_jc_count; +static DEFINE_MUTEX(bfin_jc_tty_mutex); +static volatile struct circ_buf bfin_jc_write_buf; + +static int +bfin_jc_emudat_manager(void *arg) +{ + uint32_t inbound_len = 0, outbound_len = 0; + + while (!kthread_should_stop()) { + /* no one left to give data to, so sleep */ + if (bfin_jc_tty == NULL && circ_empty(&bfin_jc_write_buf)) { + pr_debug("waiting for readers\n"); + __set_current_state(TASK_UNINTERRUPTIBLE); + schedule(); + __set_current_state(TASK_RUNNING); + } + + /* no data available, so just chill */ + if (!(bfin_read_DBGSTAT() & EMUDIF) && circ_empty(&bfin_jc_write_buf)) { + pr_debug("waiting for data (in_len = %i) (circ: %i %i)\n", + inbound_len, bfin_jc_write_buf.tail, bfin_jc_write_buf.head); + if (inbound_len) + schedule(); + else + schedule_timeout_interruptible(HZ); + continue; + } + + /* if incoming data is ready, eat it */ + if (bfin_read_DBGSTAT() & EMUDIF) { + struct tty_struct *tty; + mutex_lock(&bfin_jc_tty_mutex); + tty = (struct tty_struct *)bfin_jc_tty; + if (tty != NULL) { + uint32_t emudat = bfin_read_emudat(); + if (inbound_len == 0) { + pr_debug("incoming length: 0x%08x\n", emudat); + inbound_len = emudat; + } else { + size_t num_chars = (4 <= inbound_len ? 4 : inbound_len); + pr_debug(" incoming data: 0x%08x (pushing %zu)\n", emudat, num_chars); + inbound_len -= num_chars; + tty_insert_flip_string(tty, (unsigned char *)&emudat, num_chars); + tty_flip_buffer_push(tty); + } + } + mutex_unlock(&bfin_jc_tty_mutex); + } + + /* if outgoing data is ready, post it */ + if (!(bfin_read_DBGSTAT() & EMUDOF) && !circ_empty(&bfin_jc_write_buf)) { + if (outbound_len == 0) { + outbound_len = circ_cnt(&bfin_jc_write_buf); + bfin_write_emudat(outbound_len); + pr_debug("outgoing length: 0x%08x\n", outbound_len); + } else { + struct tty_struct *tty; + int tail = bfin_jc_write_buf.tail; + size_t ate = (4 <= outbound_len ? 4 : outbound_len); + uint32_t emudat = + bfin_write_emudat_chars( + circ_byte(&bfin_jc_write_buf, tail + 0), + circ_byte(&bfin_jc_write_buf, tail + 1), + circ_byte(&bfin_jc_write_buf, tail + 2), + circ_byte(&bfin_jc_write_buf, tail + 3) + ); + bfin_jc_write_buf.tail += ate; + outbound_len -= ate; + mutex_lock(&bfin_jc_tty_mutex); + tty = (struct tty_struct *)bfin_jc_tty; + if (tty) + tty_wakeup(tty); + mutex_unlock(&bfin_jc_tty_mutex); + pr_debug(" outgoing data: 0x%08x (pushing %zu)\n", emudat, ate); + } + } + } + + __set_current_state(TASK_RUNNING); + return 0; +} + +static int +bfin_jc_open(struct tty_struct *tty, struct file *filp) +{ + mutex_lock(&bfin_jc_tty_mutex); + pr_debug("open %lu\n", bfin_jc_count); + ++bfin_jc_count; + bfin_jc_tty = tty; + wake_up_process(bfin_jc_kthread); + mutex_unlock(&bfin_jc_tty_mutex); + return 0; +} + +static void +bfin_jc_close(struct tty_struct *tty, struct file *filp) +{ + mutex_lock(&bfin_jc_tty_mutex); + pr_debug("close %lu\n", bfin_jc_count); + if (--bfin_jc_count == 0) + bfin_jc_tty = NULL; + wake_up_process(bfin_jc_kthread); + mutex_unlock(&bfin_jc_tty_mutex); +} + +/* XXX: we dont handle the put_char() case where we must handle count = 1 */ +static int +bfin_jc_circ_write(const unsigned char *buf, int count) +{ + int i; + count = min(count, circ_free(&bfin_jc_write_buf)); + pr_debug("going to write chunk of %i bytes\n", count); + for (i = 0; i < count; ++i) + circ_byte(&bfin_jc_write_buf, bfin_jc_write_buf.head + i) = buf[i]; + bfin_jc_write_buf.head += i; + return i; +} + +#ifndef CONFIG_BFIN_JTAG_COMM_CONSOLE +# define console_lock() +# define console_unlock() +#endif +static int +bfin_jc_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + int i; + console_lock(); + i = bfin_jc_circ_write(buf, count); + console_unlock(); + wake_up_process(bfin_jc_kthread); + return i; +} + +static void +bfin_jc_flush_chars(struct tty_struct *tty) +{ + wake_up_process(bfin_jc_kthread); +} + +static int +bfin_jc_write_room(struct tty_struct *tty) +{ + return circ_free(&bfin_jc_write_buf); +} + +static int +bfin_jc_chars_in_buffer(struct tty_struct *tty) +{ + return circ_cnt(&bfin_jc_write_buf); +} + +static void +bfin_jc_wait_until_sent(struct tty_struct *tty, int timeout) +{ + unsigned long expire = jiffies + timeout; + while (!circ_empty(&bfin_jc_write_buf)) { + if (signal_pending(current)) + break; + if (time_after(jiffies, expire)) + break; + } +} + +static const struct tty_operations bfin_jc_ops = { + .open = bfin_jc_open, + .close = bfin_jc_close, + .write = bfin_jc_write, + /*.put_char = bfin_jc_put_char,*/ + .flush_chars = bfin_jc_flush_chars, + .write_room = bfin_jc_write_room, + .chars_in_buffer = bfin_jc_chars_in_buffer, + .wait_until_sent = bfin_jc_wait_until_sent, +}; + +static int __init bfin_jc_init(void) +{ + int ret; + + bfin_jc_kthread = kthread_create(bfin_jc_emudat_manager, NULL, DRV_NAME); + if (IS_ERR(bfin_jc_kthread)) + return PTR_ERR(bfin_jc_kthread); + + ret = -ENOMEM; + + bfin_jc_write_buf.head = bfin_jc_write_buf.tail = 0; + bfin_jc_write_buf.buf = kmalloc(CIRC_SIZE, GFP_KERNEL); + if (!bfin_jc_write_buf.buf) + goto err; + + bfin_jc_driver = alloc_tty_driver(1); + if (!bfin_jc_driver) + goto err; + + bfin_jc_driver->owner = THIS_MODULE; + bfin_jc_driver->driver_name = DRV_NAME; + bfin_jc_driver->name = DEV_NAME; + bfin_jc_driver->type = TTY_DRIVER_TYPE_SERIAL; + bfin_jc_driver->subtype = SERIAL_TYPE_NORMAL; + bfin_jc_driver->init_termios = tty_std_termios; + tty_set_operations(bfin_jc_driver, &bfin_jc_ops); + + ret = tty_register_driver(bfin_jc_driver); + if (ret) + goto err; + + pr_init(KERN_INFO DRV_NAME ": initialized\n"); + + return 0; + + err: + put_tty_driver(bfin_jc_driver); + kfree(bfin_jc_write_buf.buf); + kthread_stop(bfin_jc_kthread); + return ret; +} +module_init(bfin_jc_init); + +static void __exit bfin_jc_exit(void) +{ + kthread_stop(bfin_jc_kthread); + kfree(bfin_jc_write_buf.buf); + tty_unregister_driver(bfin_jc_driver); + put_tty_driver(bfin_jc_driver); +} +module_exit(bfin_jc_exit); + +#if defined(CONFIG_BFIN_JTAG_COMM_CONSOLE) || defined(CONFIG_EARLY_PRINTK) +static void +bfin_jc_straight_buffer_write(const char *buf, unsigned count) +{ + unsigned ate = 0; + while (bfin_read_DBGSTAT() & EMUDOF) + continue; + bfin_write_emudat(count); + while (ate < count) { + while (bfin_read_DBGSTAT() & EMUDOF) + continue; + bfin_write_emudat_chars(buf[ate], buf[ate+1], buf[ate+2], buf[ate+3]); + ate += 4; + } +} +#endif + +#ifdef CONFIG_BFIN_JTAG_COMM_CONSOLE +static void +bfin_jc_console_write(struct console *co, const char *buf, unsigned count) +{ + if (bfin_jc_kthread == NULL) + bfin_jc_straight_buffer_write(buf, count); + else + bfin_jc_circ_write(buf, count); +} + +static struct tty_driver * +bfin_jc_console_device(struct console *co, int *index) +{ + *index = co->index; + return bfin_jc_driver; +} + +static struct console bfin_jc_console = { + .name = DEV_NAME, + .write = bfin_jc_console_write, + .device = bfin_jc_console_device, + .flags = CON_ANYTIME | CON_PRINTBUFFER, + .index = -1, +}; + +static int __init bfin_jc_console_init(void) +{ + register_console(&bfin_jc_console); + return 0; +} +console_initcall(bfin_jc_console_init); +#endif + +#ifdef CONFIG_EARLY_PRINTK +static void __init +bfin_jc_early_write(struct console *co, const char *buf, unsigned int count) +{ + bfin_jc_straight_buffer_write(buf, count); +} + +static struct __initdata console bfin_jc_early_console = { + .name = "early_BFJC", + .write = bfin_jc_early_write, + .flags = CON_ANYTIME | CON_PRINTBUFFER, + .index = -1, +}; + +struct console * __init +bfin_jc_early_init(unsigned int port, unsigned int cflag) +{ + return &bfin_jc_early_console; +} +#endif + +MODULE_AUTHOR("Mike Frysinger "); +MODULE_DESCRIPTION("TTY over Blackfin JTAG Communication"); +MODULE_LICENSE("GPL"); diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c new file mode 100644 index 000000000000..c99728f0cd9f --- /dev/null +++ b/drivers/tty/cyclades.c @@ -0,0 +1,4200 @@ +#undef BLOCKMOVE +#define Z_WAKE +#undef Z_EXT_CHARS_IN_BUFFER + +/* + * linux/drivers/char/cyclades.c + * + * This file contains the driver for the Cyclades async multiport + * serial boards. + * + * Initially written by Randolph Bentson . + * Modified and maintained by Marcio Saito . + * + * Copyright (C) 2007-2009 Jiri Slaby + * + * Much of the design and some of the code came from serial.c + * which was copyright (C) 1991, 1992 Linus Torvalds. It was + * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, + * and then fixed as suggested by Michael K. Johnson 12/12/92. + * Converted to pci probing and cleaned up by Jiri Slaby. + * + */ + +#define CY_VERSION "2.6" + +/* If you need to install more boards than NR_CARDS, change the constant + in the definition below. No other change is necessary to support up to + eight boards. Beyond that you'll have to extend cy_isa_addresses. */ + +#define NR_CARDS 4 + +/* + If the total number of ports is larger than NR_PORTS, change this + constant in the definition below. No other change is necessary to + support more boards/ports. */ + +#define NR_PORTS 256 + +#define ZO_V1 0 +#define ZO_V2 1 +#define ZE_V1 2 + +#define SERIAL_PARANOIA_CHECK +#undef CY_DEBUG_OPEN +#undef CY_DEBUG_THROTTLE +#undef CY_DEBUG_OTHER +#undef CY_DEBUG_IO +#undef CY_DEBUG_COUNT +#undef CY_DEBUG_DTR +#undef CY_DEBUG_WAIT_UNTIL_SENT +#undef CY_DEBUG_INTERRUPTS +#undef CY_16Y_HACK +#undef CY_ENABLE_MONITORING +#undef CY_PCI_DEBUG + +/* + * Include section + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + +#include +#include +#include + +static void cy_send_xchar(struct tty_struct *tty, char ch); + +#ifndef SERIAL_XMIT_SIZE +#define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) +#endif + +#define STD_COM_FLAGS (0) + +/* firmware stuff */ +#define ZL_MAX_BLOCKS 16 +#define DRIVER_VERSION 0x02010203 +#define RAM_SIZE 0x80000 + +enum zblock_type { + ZBLOCK_PRG = 0, + ZBLOCK_FPGA = 1 +}; + +struct zfile_header { + char name[64]; + char date[32]; + char aux[32]; + u32 n_config; + u32 config_offset; + u32 n_blocks; + u32 block_offset; + u32 reserved[9]; +} __attribute__ ((packed)); + +struct zfile_config { + char name[64]; + u32 mailbox; + u32 function; + u32 n_blocks; + u32 block_list[ZL_MAX_BLOCKS]; +} __attribute__ ((packed)); + +struct zfile_block { + u32 type; + u32 file_offset; + u32 ram_offset; + u32 size; +} __attribute__ ((packed)); + +static struct tty_driver *cy_serial_driver; + +#ifdef CONFIG_ISA +/* This is the address lookup table. The driver will probe for + Cyclom-Y/ISA boards at all addresses in here. If you want the + driver to probe addresses at a different address, add it to + this table. If the driver is probing some other board and + causing problems, remove the offending address from this table. +*/ + +static unsigned int cy_isa_addresses[] = { + 0xD0000, + 0xD2000, + 0xD4000, + 0xD6000, + 0xD8000, + 0xDA000, + 0xDC000, + 0xDE000, + 0, 0, 0, 0, 0, 0, 0, 0 +}; + +#define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) + +static long maddr[NR_CARDS]; +static int irq[NR_CARDS]; + +module_param_array(maddr, long, NULL, 0); +module_param_array(irq, int, NULL, 0); + +#endif /* CONFIG_ISA */ + +/* This is the per-card data structure containing address, irq, number of + channels, etc. This driver supports a maximum of NR_CARDS cards. +*/ +static struct cyclades_card cy_card[NR_CARDS]; + +static int cy_next_channel; /* next minor available */ + +/* + * This is used to look up the divisor speeds and the timeouts + * We're normally limited to 15 distinct baud rates. The extra + * are accessed via settings in info->port.flags. + * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, + * HI VHI + * 20 + */ +static const int baud_table[] = { + 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, + 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, + 230400, 0 +}; + +static const char baud_co_25[] = { /* 25 MHz clock option table */ + /* value => 00 01 02 03 04 */ + /* divide by 8 32 128 512 2048 */ + 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, + 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ + 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, + 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 +}; + +static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ + /* value => 00 01 02 03 04 */ + /* divide by 8 32 128 512 2048 */ + 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, + 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00 +}; + +static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ + 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, + 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, + 0x21 +}; + +static const char baud_cor3[] = { /* receive threshold */ + 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, + 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, + 0x07 +}; + +/* + * The Cyclades driver implements HW flow control as any serial driver. + * The cyclades_port structure member rflow and the vector rflow_thr + * allows us to take advantage of a special feature in the CD1400 to avoid + * data loss even when the system interrupt latency is too high. These flags + * are to be used only with very special applications. Setting these flags + * requires the use of a special cable (DTR and RTS reversed). In the new + * CD1400-based boards (rev. 6.00 or later), there is no need for special + * cables. + */ + +static const char rflow_thr[] = { /* rflow threshold */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, + 0x0a +}; + +/* The Cyclom-Ye has placed the sequential chips in non-sequential + * address order. This look-up table overcomes that problem. + */ +static const unsigned int cy_chip_offset[] = { 0x0000, + 0x0400, + 0x0800, + 0x0C00, + 0x0200, + 0x0600, + 0x0A00, + 0x0E00 +}; + +/* PCI related definitions */ + +#ifdef CONFIG_PCI +static const struct pci_device_id cy_pci_dev_id[] = { + /* PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, + /* PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, + /* 4Y PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, + /* 4Y PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, + /* 8Y PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, + /* 8Y PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, + /* Z PCI < 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, + /* Z PCI > 1Mb */ + { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, + { } /* end of table */ +}; +MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); +#endif + +static void cy_start(struct tty_struct *); +static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); +static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); +#ifdef CONFIG_ISA +static unsigned detect_isa_irq(void __iomem *); +#endif /* CONFIG_ISA */ + +#ifndef CONFIG_CYZ_INTR +static void cyz_poll(unsigned long); + +/* The Cyclades-Z polling cycle is defined by this variable */ +static long cyz_polling_cycle = CZ_DEF_POLL; + +static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); + +#else /* CONFIG_CYZ_INTR */ +static void cyz_rx_restart(unsigned long); +static struct timer_list cyz_rx_full_timer[NR_PORTS]; +#endif /* CONFIG_CYZ_INTR */ + +static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) +{ + struct cyclades_card *card = port->card; + + cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); +} + +static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) +{ + struct cyclades_card *card = port->card; + + return readb(port->u.cyy.base_addr + (reg << card->bus_index)); +} + +static inline bool cy_is_Z(struct cyclades_card *card) +{ + return card->num_chips == (unsigned int)-1; +} + +static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) +{ + return readl(&ctl_addr->init_ctrl) & (1 << 17); +} + +static inline bool cyz_fpga_loaded(struct cyclades_card *card) +{ + return __cyz_fpga_loaded(card->ctl_addr.p9060); +} + +static inline bool cyz_is_loaded(struct cyclades_card *card) +{ + struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; + + return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && + readl(&fw_id->signature) == ZFIRM_ID; +} + +static inline int serial_paranoia_check(struct cyclades_port *info, + const char *name, const char *routine) +{ +#ifdef SERIAL_PARANOIA_CHECK + if (!info) { + printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " + "in %s\n", name, routine); + return 1; + } + + if (info->magic != CYCLADES_MAGIC) { + printk(KERN_WARNING "cyc Warning: bad magic number for serial " + "struct (%s) in %s\n", name, routine); + return 1; + } +#endif + return 0; +} + +/***********************************************************/ +/********* Start of block of Cyclom-Y specific code ********/ + +/* This routine waits up to 1000 micro-seconds for the previous + command to the Cirrus chip to complete and then issues the + new command. An error is returned if the previous command + didn't finish within the time limit. + + This function is only called from inside spinlock-protected code. + */ +static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) +{ + void __iomem *ccr = base_addr + (CyCCR << index); + unsigned int i; + + /* Check to see that the previous command has completed */ + for (i = 0; i < 100; i++) { + if (readb(ccr) == 0) + break; + udelay(10L); + } + /* if the CCR never cleared, the previous command + didn't finish within the "reasonable time" */ + if (i == 100) + return -1; + + /* Issue the new command */ + cy_writeb(ccr, cmd); + + return 0; +} + +static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) +{ + return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, + port->card->bus_index); +} + +#ifdef CONFIG_ISA +/* ISA interrupt detection code */ +static unsigned detect_isa_irq(void __iomem *address) +{ + int irq; + unsigned long irqs, flags; + int save_xir, save_car; + int index = 0; /* IRQ probing is only for ISA */ + + /* forget possible initially masked and pending IRQ */ + irq = probe_irq_off(probe_irq_on()); + + /* Clear interrupts on the board first */ + cy_writeb(address + (Cy_ClrIntr << index), 0); + /* Cy_ClrIntr is 0x1800 */ + + irqs = probe_irq_on(); + /* Wait ... */ + msleep(5); + + /* Enable the Tx interrupts on the CD1400 */ + local_irq_save(flags); + cy_writeb(address + (CyCAR << index), 0); + __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); + + cy_writeb(address + (CyCAR << index), 0); + cy_writeb(address + (CySRER << index), + readb(address + (CySRER << index)) | CyTxRdy); + local_irq_restore(flags); + + /* Wait ... */ + msleep(5); + + /* Check which interrupt is in use */ + irq = probe_irq_off(irqs); + + /* Clean up */ + save_xir = (u_char) readb(address + (CyTIR << index)); + save_car = readb(address + (CyCAR << index)); + cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); + cy_writeb(address + (CySRER << index), + readb(address + (CySRER << index)) & ~CyTxRdy); + cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); + cy_writeb(address + (CyCAR << index), (save_car)); + cy_writeb(address + (Cy_ClrIntr << index), 0); + /* Cy_ClrIntr is 0x1800 */ + + return (irq > 0) ? irq : 0; +} +#endif /* CONFIG_ISA */ + +static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, + void __iomem *base_addr) +{ + struct cyclades_port *info; + struct tty_struct *tty; + int len, index = cinfo->bus_index; + u8 ivr, save_xir, channel, save_car, data, char_count; + +#ifdef CY_DEBUG_INTERRUPTS + printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); +#endif + /* determine the channel & change to that context */ + save_xir = readb(base_addr + (CyRIR << index)); + channel = save_xir & CyIRChannel; + info = &cinfo->ports[channel + chip * 4]; + save_car = cyy_readb(info, CyCAR); + cyy_writeb(info, CyCAR, save_xir); + ivr = cyy_readb(info, CyRIVR) & CyIVRMask; + + tty = tty_port_tty_get(&info->port); + /* if there is nowhere to put the data, discard it */ + if (tty == NULL) { + if (ivr == CyIVRRxEx) { /* exception */ + data = cyy_readb(info, CyRDSR); + } else { /* normal character reception */ + char_count = cyy_readb(info, CyRDCR); + while (char_count--) + data = cyy_readb(info, CyRDSR); + } + goto end; + } + /* there is an open port for this data */ + if (ivr == CyIVRRxEx) { /* exception */ + data = cyy_readb(info, CyRDSR); + + /* For statistics only */ + if (data & CyBREAK) + info->icount.brk++; + else if (data & CyFRAME) + info->icount.frame++; + else if (data & CyPARITY) + info->icount.parity++; + else if (data & CyOVERRUN) + info->icount.overrun++; + + if (data & info->ignore_status_mask) { + info->icount.rx++; + tty_kref_put(tty); + return; + } + if (tty_buffer_request_room(tty, 1)) { + if (data & info->read_status_mask) { + if (data & CyBREAK) { + tty_insert_flip_char(tty, + cyy_readb(info, CyRDSR), + TTY_BREAK); + info->icount.rx++; + if (info->port.flags & ASYNC_SAK) + do_SAK(tty); + } else if (data & CyFRAME) { + tty_insert_flip_char(tty, + cyy_readb(info, CyRDSR), + TTY_FRAME); + info->icount.rx++; + info->idle_stats.frame_errs++; + } else if (data & CyPARITY) { + /* Pieces of seven... */ + tty_insert_flip_char(tty, + cyy_readb(info, CyRDSR), + TTY_PARITY); + info->icount.rx++; + info->idle_stats.parity_errs++; + } else if (data & CyOVERRUN) { + tty_insert_flip_char(tty, 0, + TTY_OVERRUN); + info->icount.rx++; + /* If the flip buffer itself is + overflowing, we still lose + the next incoming character. + */ + tty_insert_flip_char(tty, + cyy_readb(info, CyRDSR), + TTY_FRAME); + info->icount.rx++; + info->idle_stats.overruns++; + /* These two conditions may imply */ + /* a normal read should be done. */ + /* } else if(data & CyTIMEOUT) { */ + /* } else if(data & CySPECHAR) { */ + } else { + tty_insert_flip_char(tty, 0, + TTY_NORMAL); + info->icount.rx++; + } + } else { + tty_insert_flip_char(tty, 0, TTY_NORMAL); + info->icount.rx++; + } + } else { + /* there was a software buffer overrun and nothing + * could be done about it!!! */ + info->icount.buf_overrun++; + info->idle_stats.overruns++; + } + } else { /* normal character reception */ + /* load # chars available from the chip */ + char_count = cyy_readb(info, CyRDCR); + +#ifdef CY_ENABLE_MONITORING + ++info->mon.int_count; + info->mon.char_count += char_count; + if (char_count > info->mon.char_max) + info->mon.char_max = char_count; + info->mon.char_last = char_count; +#endif + len = tty_buffer_request_room(tty, char_count); + while (len--) { + data = cyy_readb(info, CyRDSR); + tty_insert_flip_char(tty, data, TTY_NORMAL); + info->idle_stats.recv_bytes++; + info->icount.rx++; +#ifdef CY_16Y_HACK + udelay(10L); +#endif + } + info->idle_stats.recv_idle = jiffies; + } + tty_schedule_flip(tty); + tty_kref_put(tty); +end: + /* end of service */ + cyy_writeb(info, CyRIR, save_xir & 0x3f); + cyy_writeb(info, CyCAR, save_car); +} + +static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, + void __iomem *base_addr) +{ + struct cyclades_port *info; + struct tty_struct *tty; + int char_count, index = cinfo->bus_index; + u8 save_xir, channel, save_car, outch; + + /* Since we only get here when the transmit buffer + is empty, we know we can always stuff a dozen + characters. */ +#ifdef CY_DEBUG_INTERRUPTS + printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); +#endif + + /* determine the channel & change to that context */ + save_xir = readb(base_addr + (CyTIR << index)); + channel = save_xir & CyIRChannel; + save_car = readb(base_addr + (CyCAR << index)); + cy_writeb(base_addr + (CyCAR << index), save_xir); + + info = &cinfo->ports[channel + chip * 4]; + tty = tty_port_tty_get(&info->port); + if (tty == NULL) { + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); + goto end; + } + + /* load the on-chip space for outbound data */ + char_count = info->xmit_fifo_size; + + if (info->x_char) { /* send special char */ + outch = info->x_char; + cyy_writeb(info, CyTDR, outch); + char_count--; + info->icount.tx++; + info->x_char = 0; + } + + if (info->breakon || info->breakoff) { + if (info->breakon) { + cyy_writeb(info, CyTDR, 0); + cyy_writeb(info, CyTDR, 0x81); + info->breakon = 0; + char_count -= 2; + } + if (info->breakoff) { + cyy_writeb(info, CyTDR, 0); + cyy_writeb(info, CyTDR, 0x83); + info->breakoff = 0; + char_count -= 2; + } + } + + while (char_count-- > 0) { + if (!info->xmit_cnt) { + if (cyy_readb(info, CySRER) & CyTxMpty) { + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxMpty); + } else { + cyy_writeb(info, CySRER, CyTxMpty | + (cyy_readb(info, CySRER) & ~CyTxRdy)); + } + goto done; + } + if (info->port.xmit_buf == NULL) { + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxRdy); + goto done; + } + if (tty->stopped || tty->hw_stopped) { + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxRdy); + goto done; + } + /* Because the Embedded Transmit Commands have been enabled, + * we must check to see if the escape character, NULL, is being + * sent. If it is, we must ensure that there is room for it to + * be doubled in the output stream. Therefore we no longer + * advance the pointer when the character is fetched, but + * rather wait until after the check for a NULL output + * character. This is necessary because there may not be room + * for the two chars needed to send a NULL.) + */ + outch = info->port.xmit_buf[info->xmit_tail]; + if (outch) { + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) & + (SERIAL_XMIT_SIZE - 1); + cyy_writeb(info, CyTDR, outch); + info->icount.tx++; + } else { + if (char_count > 1) { + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) & + (SERIAL_XMIT_SIZE - 1); + cyy_writeb(info, CyTDR, outch); + cyy_writeb(info, CyTDR, 0); + info->icount.tx++; + char_count--; + } + } + } + +done: + tty_wakeup(tty); + tty_kref_put(tty); +end: + /* end of service */ + cyy_writeb(info, CyTIR, save_xir & 0x3f); + cyy_writeb(info, CyCAR, save_car); +} + +static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, + void __iomem *base_addr) +{ + struct cyclades_port *info; + struct tty_struct *tty; + int index = cinfo->bus_index; + u8 save_xir, channel, save_car, mdm_change, mdm_status; + + /* determine the channel & change to that context */ + save_xir = readb(base_addr + (CyMIR << index)); + channel = save_xir & CyIRChannel; + info = &cinfo->ports[channel + chip * 4]; + save_car = cyy_readb(info, CyCAR); + cyy_writeb(info, CyCAR, save_xir); + + mdm_change = cyy_readb(info, CyMISR); + mdm_status = cyy_readb(info, CyMSVR1); + + tty = tty_port_tty_get(&info->port); + if (!tty) + goto end; + + if (mdm_change & CyANY_DELTA) { + /* For statistics only */ + if (mdm_change & CyDCD) + info->icount.dcd++; + if (mdm_change & CyCTS) + info->icount.cts++; + if (mdm_change & CyDSR) + info->icount.dsr++; + if (mdm_change & CyRI) + info->icount.rng++; + + wake_up_interruptible(&info->port.delta_msr_wait); + } + + if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { + if (mdm_status & CyDCD) + wake_up_interruptible(&info->port.open_wait); + else + tty_hangup(tty); + } + if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { + if (tty->hw_stopped) { + if (mdm_status & CyCTS) { + /* cy_start isn't used + because... !!! */ + tty->hw_stopped = 0; + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) | CyTxRdy); + tty_wakeup(tty); + } + } else { + if (!(mdm_status & CyCTS)) { + /* cy_stop isn't used + because ... !!! */ + tty->hw_stopped = 1; + cyy_writeb(info, CySRER, + cyy_readb(info, CySRER) & ~CyTxRdy); + } + } + } +/* if (mdm_change & CyDSR) { + } + if (mdm_change & CyRI) { + }*/ + tty_kref_put(tty); +end: + /* end of service */ + cyy_writeb(info, CyMIR, save_xir & 0x3f); + cyy_writeb(info, CyCAR, save_car); +} + +/* The real interrupt service routine is called + whenever the card wants its hand held--chars + received, out buffer empty, modem change, etc. + */ +static irqreturn_t cyy_interrupt(int irq, void *dev_id) +{ + int status; + struct cyclades_card *cinfo = dev_id; + void __iomem *base_addr, *card_base_addr; + unsigned int chip, too_many, had_work; + int index; + + if (unlikely(cinfo == NULL)) { +#ifdef CY_DEBUG_INTERRUPTS + printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", + irq); +#endif + return IRQ_NONE; /* spurious interrupt */ + } + + card_base_addr = cinfo->base_addr; + index = cinfo->bus_index; + + /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ + if (unlikely(card_base_addr == NULL)) + return IRQ_HANDLED; + + /* This loop checks all chips in the card. Make a note whenever + _any_ chip had some work to do, as this is considered an + indication that there will be more to do. Only when no chip + has any work does this outermost loop exit. + */ + do { + had_work = 0; + for (chip = 0; chip < cinfo->num_chips; chip++) { + base_addr = cinfo->base_addr + + (cy_chip_offset[chip] << index); + too_many = 0; + while ((status = readb(base_addr + + (CySVRR << index))) != 0x00) { + had_work++; + /* The purpose of the following test is to ensure that + no chip can monopolize the driver. This forces the + chips to be checked in a round-robin fashion (after + draining each of a bunch (1000) of characters). + */ + if (1000 < too_many++) + break; + spin_lock(&cinfo->card_lock); + if (status & CySRReceive) /* rx intr */ + cyy_chip_rx(cinfo, chip, base_addr); + if (status & CySRTransmit) /* tx intr */ + cyy_chip_tx(cinfo, chip, base_addr); + if (status & CySRModem) /* modem intr */ + cyy_chip_modem(cinfo, chip, base_addr); + spin_unlock(&cinfo->card_lock); + } + } + } while (had_work); + + /* clear interrupts */ + spin_lock(&cinfo->card_lock); + cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); + /* Cy_ClrIntr is 0x1800 */ + spin_unlock(&cinfo->card_lock); + return IRQ_HANDLED; +} /* cyy_interrupt */ + +static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, + unsigned int clear) +{ + struct cyclades_card *card = info->card; + int channel = info->line - card->first_line; + u32 rts, dtr, msvrr, msvrd; + + channel &= 0x03; + + if (info->rtsdtr_inv) { + msvrr = CyMSVR2; + msvrd = CyMSVR1; + rts = CyDTR; + dtr = CyRTS; + } else { + msvrr = CyMSVR1; + msvrd = CyMSVR2; + rts = CyRTS; + dtr = CyDTR; + } + if (set & TIOCM_RTS) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrr, rts); + } + if (clear & TIOCM_RTS) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrr, ~rts); + } + if (set & TIOCM_DTR) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrd, dtr); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); + printk(KERN_DEBUG " status: 0x%x, 0x%x\n", + cyy_readb(info, CyMSVR1), + cyy_readb(info, CyMSVR2)); +#endif + } + if (clear & TIOCM_DTR) { + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, msvrd, ~dtr); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); + printk(KERN_DEBUG " status: 0x%x, 0x%x\n", + cyy_readb(info, CyMSVR1), + cyy_readb(info, CyMSVR2)); +#endif + } +} + +/***********************************************************/ +/********* End of block of Cyclom-Y specific code **********/ +/******** Start of block of Cyclades-Z specific code *******/ +/***********************************************************/ + +static int +cyz_fetch_msg(struct cyclades_card *cinfo, + __u32 *channel, __u8 *cmd, __u32 *param) +{ + struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; + unsigned long loc_doorbell; + + loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); + if (loc_doorbell) { + *cmd = (char)(0xff & loc_doorbell); + *channel = readl(&board_ctrl->fwcmd_channel); + *param = (__u32) readl(&board_ctrl->fwcmd_param); + cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); + return 1; + } + return 0; +} /* cyz_fetch_msg */ + +static int +cyz_issue_cmd(struct cyclades_card *cinfo, + __u32 channel, __u8 cmd, __u32 param) +{ + struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; + __u32 __iomem *pci_doorbell; + unsigned int index; + + if (!cyz_is_loaded(cinfo)) + return -1; + + index = 0; + pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; + while ((readl(pci_doorbell) & 0xff) != 0) { + if (index++ == 1000) + return (int)(readl(pci_doorbell) & 0xff); + udelay(50L); + } + cy_writel(&board_ctrl->hcmd_channel, channel); + cy_writel(&board_ctrl->hcmd_param, param); + cy_writel(pci_doorbell, (long)cmd); + + return 0; +} /* cyz_issue_cmd */ + +static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) +{ + struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; + struct cyclades_card *cinfo = info->card; + unsigned int char_count; + int len; +#ifdef BLOCKMOVE + unsigned char *buf; +#else + char data; +#endif + __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; + + rx_get = new_rx_get = readl(&buf_ctrl->rx_get); + rx_put = readl(&buf_ctrl->rx_put); + rx_bufsize = readl(&buf_ctrl->rx_bufsize); + rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); + if (rx_put >= rx_get) + char_count = rx_put - rx_get; + else + char_count = rx_put - rx_get + rx_bufsize; + + if (char_count) { +#ifdef CY_ENABLE_MONITORING + info->mon.int_count++; + info->mon.char_count += char_count; + if (char_count > info->mon.char_max) + info->mon.char_max = char_count; + info->mon.char_last = char_count; +#endif + if (tty == NULL) { + /* flush received characters */ + new_rx_get = (new_rx_get + char_count) & + (rx_bufsize - 1); + info->rflush_count++; + } else { +#ifdef BLOCKMOVE + /* we'd like to use memcpy(t, f, n) and memset(s, c, count) + for performance, but because of buffer boundaries, there + may be several steps to the operation */ + while (1) { + len = tty_prepare_flip_string(tty, &buf, + char_count); + if (!len) + break; + + len = min_t(unsigned int, min(len, char_count), + rx_bufsize - new_rx_get); + + memcpy_fromio(buf, cinfo->base_addr + + rx_bufaddr + new_rx_get, len); + + new_rx_get = (new_rx_get + len) & + (rx_bufsize - 1); + char_count -= len; + info->icount.rx += len; + info->idle_stats.recv_bytes += len; + } +#else + len = tty_buffer_request_room(tty, char_count); + while (len--) { + data = readb(cinfo->base_addr + rx_bufaddr + + new_rx_get); + new_rx_get = (new_rx_get + 1) & + (rx_bufsize - 1); + tty_insert_flip_char(tty, data, TTY_NORMAL); + info->idle_stats.recv_bytes++; + info->icount.rx++; + } +#endif +#ifdef CONFIG_CYZ_INTR + /* Recalculate the number of chars in the RX buffer and issue + a cmd in case it's higher than the RX high water mark */ + rx_put = readl(&buf_ctrl->rx_put); + if (rx_put >= rx_get) + char_count = rx_put - rx_get; + else + char_count = rx_put - rx_get + rx_bufsize; + if (char_count >= readl(&buf_ctrl->rx_threshold) && + !timer_pending(&cyz_rx_full_timer[ + info->line])) + mod_timer(&cyz_rx_full_timer[info->line], + jiffies + 1); +#endif + info->idle_stats.recv_idle = jiffies; + tty_schedule_flip(tty); + } + /* Update rx_get */ + cy_writel(&buf_ctrl->rx_get, new_rx_get); + } +} + +static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) +{ + struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; + struct cyclades_card *cinfo = info->card; + u8 data; + unsigned int char_count; +#ifdef BLOCKMOVE + int small_count; +#endif + __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; + + if (info->xmit_cnt <= 0) /* Nothing to transmit */ + return; + + tx_get = readl(&buf_ctrl->tx_get); + tx_put = readl(&buf_ctrl->tx_put); + tx_bufsize = readl(&buf_ctrl->tx_bufsize); + tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); + if (tx_put >= tx_get) + char_count = tx_get - tx_put - 1 + tx_bufsize; + else + char_count = tx_get - tx_put - 1; + + if (char_count) { + + if (tty == NULL) + goto ztxdone; + + if (info->x_char) { /* send special char */ + data = info->x_char; + + cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); + tx_put = (tx_put + 1) & (tx_bufsize - 1); + info->x_char = 0; + char_count--; + info->icount.tx++; + } +#ifdef BLOCKMOVE + while (0 < (small_count = min_t(unsigned int, + tx_bufsize - tx_put, min_t(unsigned int, + (SERIAL_XMIT_SIZE - info->xmit_tail), + min_t(unsigned int, info->xmit_cnt, + char_count))))) { + + memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + + tx_put), + &info->port.xmit_buf[info->xmit_tail], + small_count); + + tx_put = (tx_put + small_count) & (tx_bufsize - 1); + char_count -= small_count; + info->icount.tx += small_count; + info->xmit_cnt -= small_count; + info->xmit_tail = (info->xmit_tail + small_count) & + (SERIAL_XMIT_SIZE - 1); + } +#else + while (info->xmit_cnt && char_count) { + data = info->port.xmit_buf[info->xmit_tail]; + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) & + (SERIAL_XMIT_SIZE - 1); + + cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); + tx_put = (tx_put + 1) & (tx_bufsize - 1); + char_count--; + info->icount.tx++; + } +#endif + tty_wakeup(tty); +ztxdone: + /* Update tx_put */ + cy_writel(&buf_ctrl->tx_put, tx_put); + } +} + +static void cyz_handle_cmd(struct cyclades_card *cinfo) +{ + struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; + struct tty_struct *tty; + struct cyclades_port *info; + __u32 channel, param, fw_ver; + __u8 cmd; + int special_count; + int delta_count; + + fw_ver = readl(&board_ctrl->fw_version); + + while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { + special_count = 0; + delta_count = 0; + info = &cinfo->ports[channel]; + tty = tty_port_tty_get(&info->port); + if (tty == NULL) + continue; + + switch (cmd) { + case C_CM_PR_ERROR: + tty_insert_flip_char(tty, 0, TTY_PARITY); + info->icount.rx++; + special_count++; + break; + case C_CM_FR_ERROR: + tty_insert_flip_char(tty, 0, TTY_FRAME); + info->icount.rx++; + special_count++; + break; + case C_CM_RXBRK: + tty_insert_flip_char(tty, 0, TTY_BREAK); + info->icount.rx++; + special_count++; + break; + case C_CM_MDCD: + info->icount.dcd++; + delta_count++; + if (info->port.flags & ASYNC_CHECK_CD) { + u32 dcd = fw_ver > 241 ? param : + readl(&info->u.cyz.ch_ctrl->rs_status); + if (dcd & C_RS_DCD) + wake_up_interruptible(&info->port.open_wait); + else + tty_hangup(tty); + } + break; + case C_CM_MCTS: + info->icount.cts++; + delta_count++; + break; + case C_CM_MRI: + info->icount.rng++; + delta_count++; + break; + case C_CM_MDSR: + info->icount.dsr++; + delta_count++; + break; +#ifdef Z_WAKE + case C_CM_IOCTLW: + complete(&info->shutdown_wait); + break; +#endif +#ifdef CONFIG_CYZ_INTR + case C_CM_RXHIWM: + case C_CM_RXNNDT: + case C_CM_INTBACK2: + /* Reception Interrupt */ +#ifdef CY_DEBUG_INTERRUPTS + printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " + "port %ld\n", info->card, channel); +#endif + cyz_handle_rx(info, tty); + break; + case C_CM_TXBEMPTY: + case C_CM_TXLOWWM: + case C_CM_INTBACK: + /* Transmission Interrupt */ +#ifdef CY_DEBUG_INTERRUPTS + printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " + "port %ld\n", info->card, channel); +#endif + cyz_handle_tx(info, tty); + break; +#endif /* CONFIG_CYZ_INTR */ + case C_CM_FATAL: + /* should do something with this !!! */ + break; + default: + break; + } + if (delta_count) + wake_up_interruptible(&info->port.delta_msr_wait); + if (special_count) + tty_schedule_flip(tty); + tty_kref_put(tty); + } +} + +#ifdef CONFIG_CYZ_INTR +static irqreturn_t cyz_interrupt(int irq, void *dev_id) +{ + struct cyclades_card *cinfo = dev_id; + + if (unlikely(!cyz_is_loaded(cinfo))) { +#ifdef CY_DEBUG_INTERRUPTS + printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " + "(IRQ%d).\n", irq); +#endif + return IRQ_NONE; + } + + /* Handle the interrupts */ + cyz_handle_cmd(cinfo); + + return IRQ_HANDLED; +} /* cyz_interrupt */ + +static void cyz_rx_restart(unsigned long arg) +{ + struct cyclades_port *info = (struct cyclades_port *)arg; + struct cyclades_card *card = info->card; + int retval; + __u32 channel = info->line - card->first_line; + unsigned long flags; + + spin_lock_irqsave(&card->card_lock, flags); + retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", + info->line, retval); + } + spin_unlock_irqrestore(&card->card_lock, flags); +} + +#else /* CONFIG_CYZ_INTR */ + +static void cyz_poll(unsigned long arg) +{ + struct cyclades_card *cinfo; + struct cyclades_port *info; + unsigned long expires = jiffies + HZ; + unsigned int port, card; + + for (card = 0; card < NR_CARDS; card++) { + cinfo = &cy_card[card]; + + if (!cy_is_Z(cinfo)) + continue; + if (!cyz_is_loaded(cinfo)) + continue; + + /* Skip first polling cycle to avoid racing conditions with the FW */ + if (!cinfo->intr_enabled) { + cinfo->intr_enabled = 1; + continue; + } + + cyz_handle_cmd(cinfo); + + for (port = 0; port < cinfo->nports; port++) { + struct tty_struct *tty; + + info = &cinfo->ports[port]; + tty = tty_port_tty_get(&info->port); + /* OK to pass NULL to the handle functions below. + They need to drop the data in that case. */ + + if (!info->throttle) + cyz_handle_rx(info, tty); + cyz_handle_tx(info, tty); + tty_kref_put(tty); + } + /* poll every 'cyz_polling_cycle' period */ + expires = jiffies + cyz_polling_cycle; + } + mod_timer(&cyz_timerlist, expires); +} /* cyz_poll */ + +#endif /* CONFIG_CYZ_INTR */ + +/********** End of block of Cyclades-Z specific code *********/ +/***********************************************************/ + +/* This is called whenever a port becomes active; + interrupts are enabled and DTR & RTS are turned on. + */ +static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) +{ + struct cyclades_card *card; + unsigned long flags; + int retval = 0; + int channel; + unsigned long page; + + card = info->card; + channel = info->line - card->first_line; + + page = get_zeroed_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + spin_lock_irqsave(&card->card_lock, flags); + + if (info->port.flags & ASYNC_INITIALIZED) + goto errout; + + if (!info->type) { + set_bit(TTY_IO_ERROR, &tty->flags); + goto errout; + } + + if (info->port.xmit_buf) + free_page(page); + else + info->port.xmit_buf = (unsigned char *)page; + + spin_unlock_irqrestore(&card->card_lock, flags); + + cy_set_line_char(info, tty); + + if (!cy_is_Z(card)) { + channel &= 0x03; + + spin_lock_irqsave(&card->card_lock, flags); + + cyy_writeb(info, CyCAR, channel); + + cyy_writeb(info, CyRTPR, + (info->default_timeout ? info->default_timeout : 0x02)); + /* 10ms rx timeout */ + + cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); + + cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); + + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); + } else { + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; + + if (!cyz_is_loaded(card)) + return -ENODEV; + +#ifdef CY_DEBUG_OPEN + printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " + "base_addr %p\n", card, channel, card->base_addr); +#endif + spin_lock_irqsave(&card->card_lock, flags); + + cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); +#ifdef Z_WAKE +#ifdef CONFIG_CYZ_INTR + cy_writel(&ch_ctrl->intr_enable, + C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | + C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); +#else + cy_writel(&ch_ctrl->intr_enable, + C_IN_IOCTLW | C_IN_MDCD); +#endif /* CONFIG_CYZ_INTR */ +#else +#ifdef CONFIG_CYZ_INTR + cy_writel(&ch_ctrl->intr_enable, + C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | + C_IN_RXNNDT | C_IN_MDCD); +#else + cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); +#endif /* CONFIG_CYZ_INTR */ +#endif /* Z_WAKE */ + + retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " + "%x\n", info->line, retval); + } + + /* Flush RX buffers before raising DTR and RTS */ + retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " + "%x\n", info->line, retval); + } + + /* set timeout !!! */ + /* set RTS and DTR !!! */ + tty_port_raise_dtr_rts(&info->port); + + /* enable send, recv, modem !!! */ + } + + info->port.flags |= ASYNC_INITIALIZED; + + clear_bit(TTY_IO_ERROR, &tty->flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + info->breakon = info->breakoff = 0; + memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); + info->idle_stats.in_use = + info->idle_stats.recv_idle = + info->idle_stats.xmit_idle = jiffies; + + spin_unlock_irqrestore(&card->card_lock, flags); + +#ifdef CY_DEBUG_OPEN + printk(KERN_DEBUG "cyc startup done\n"); +#endif + return 0; + +errout: + spin_unlock_irqrestore(&card->card_lock, flags); + free_page(page); + return retval; +} /* startup */ + +static void start_xmit(struct cyclades_port *info) +{ + struct cyclades_card *card = info->card; + unsigned long flags; + int channel = info->line - card->first_line; + + if (!cy_is_Z(card)) { + spin_lock_irqsave(&card->card_lock, flags); + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); + spin_unlock_irqrestore(&card->card_lock, flags); + } else { +#ifdef CONFIG_CYZ_INTR + int retval; + + spin_lock_irqsave(&card->card_lock, flags); + retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " + "%x\n", info->line, retval); + } + spin_unlock_irqrestore(&card->card_lock, flags); +#else /* CONFIG_CYZ_INTR */ + /* Don't have to do anything at this time */ +#endif /* CONFIG_CYZ_INTR */ + } +} /* start_xmit */ + +/* + * This routine shuts down a serial port; interrupts are disabled, + * and DTR is dropped if the hangup on close termio flag is on. + */ +static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) +{ + struct cyclades_card *card; + unsigned long flags; + int channel; + + if (!(info->port.flags & ASYNC_INITIALIZED)) + return; + + card = info->card; + channel = info->line - card->first_line; + if (!cy_is_Z(card)) { + spin_lock_irqsave(&card->card_lock, flags); + + /* Clear delta_msr_wait queue to avoid mem leaks. */ + wake_up_interruptible(&info->port.delta_msr_wait); + + if (info->port.xmit_buf) { + unsigned char *temp; + temp = info->port.xmit_buf; + info->port.xmit_buf = NULL; + free_page((unsigned long)temp); + } + if (tty->termios->c_cflag & HUPCL) + cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); + + cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); + /* it may be appropriate to clear _XMIT at + some later date (after testing)!!! */ + + set_bit(TTY_IO_ERROR, &tty->flags); + info->port.flags &= ~ASYNC_INITIALIZED; + spin_unlock_irqrestore(&card->card_lock, flags); + } else { +#ifdef CY_DEBUG_OPEN + printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " + "base_addr %p\n", card, channel, card->base_addr); +#endif + + if (!cyz_is_loaded(card)) + return; + + spin_lock_irqsave(&card->card_lock, flags); + + if (info->port.xmit_buf) { + unsigned char *temp; + temp = info->port.xmit_buf; + info->port.xmit_buf = NULL; + free_page((unsigned long)temp); + } + + if (tty->termios->c_cflag & HUPCL) + tty_port_lower_dtr_rts(&info->port); + + set_bit(TTY_IO_ERROR, &tty->flags); + info->port.flags &= ~ASYNC_INITIALIZED; + + spin_unlock_irqrestore(&card->card_lock, flags); + } + +#ifdef CY_DEBUG_OPEN + printk(KERN_DEBUG "cyc shutdown done\n"); +#endif +} /* shutdown */ + +/* + * ------------------------------------------------------------ + * cy_open() and friends + * ------------------------------------------------------------ + */ + +/* + * This routine is called whenever a serial port is opened. It + * performs the serial-specific initialization for the tty structure. + */ +static int cy_open(struct tty_struct *tty, struct file *filp) +{ + struct cyclades_port *info; + unsigned int i, line; + int retval; + + line = tty->index; + if (tty->index < 0 || NR_PORTS <= line) + return -ENODEV; + + for (i = 0; i < NR_CARDS; i++) + if (line < cy_card[i].first_line + cy_card[i].nports && + line >= cy_card[i].first_line) + break; + if (i >= NR_CARDS) + return -ENODEV; + info = &cy_card[i].ports[line - cy_card[i].first_line]; + if (info->line < 0) + return -ENODEV; + + /* If the card's firmware hasn't been loaded, + treat it as absent from the system. This + will make the user pay attention. + */ + if (cy_is_Z(info->card)) { + struct cyclades_card *cinfo = info->card; + struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; + + if (!cyz_is_loaded(cinfo)) { + if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && + readl(&firm_id->signature) == + ZFIRM_HLT) { + printk(KERN_ERR "cyc:Cyclades-Z Error: you " + "need an external power supply for " + "this number of ports.\nFirmware " + "halted.\n"); + } else { + printk(KERN_ERR "cyc:Cyclades-Z firmware not " + "yet loaded\n"); + } + return -ENODEV; + } +#ifdef CONFIG_CYZ_INTR + else { + /* In case this Z board is operating in interrupt mode, its + interrupts should be enabled as soon as the first open + happens to one of its ports. */ + if (!cinfo->intr_enabled) { + u16 intr; + + /* Enable interrupts on the PLX chip */ + intr = readw(&cinfo->ctl_addr.p9060-> + intr_ctrl_stat) | 0x0900; + cy_writew(&cinfo->ctl_addr.p9060-> + intr_ctrl_stat, intr); + /* Enable interrupts on the FW */ + retval = cyz_issue_cmd(cinfo, 0, + C_CM_IRQ_ENBL, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:IRQ enable retval " + "was %x\n", retval); + } + cinfo->intr_enabled = 1; + } + } +#endif /* CONFIG_CYZ_INTR */ + /* Make sure this Z port really exists in hardware */ + if (info->line > (cinfo->first_line + cinfo->nports - 1)) + return -ENODEV; + } +#ifdef CY_DEBUG_OTHER + printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); +#endif + tty->driver_data = info; + if (serial_paranoia_check(info, tty->name, "cy_open")) + return -ENODEV; + +#ifdef CY_DEBUG_OPEN + printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, + info->port.count); +#endif + info->port.count++; +#ifdef CY_DEBUG_COUNT + printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", + current->pid, info->port.count); +#endif + + /* + * If the port is the middle of closing, bail out now + */ + if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { + wait_event_interruptible_tty(info->port.close_wait, + !(info->port.flags & ASYNC_CLOSING)); + return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; + } + + /* + * Start up serial port + */ + retval = cy_startup(info, tty); + if (retval) + return retval; + + retval = tty_port_block_til_ready(&info->port, tty, filp); + if (retval) { +#ifdef CY_DEBUG_OPEN + printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " + "with %d\n", retval); +#endif + return retval; + } + + info->throttle = 0; + tty_port_tty_set(&info->port, tty); + +#ifdef CY_DEBUG_OPEN + printk(KERN_DEBUG "cyc:cy_open done\n"); +#endif + return 0; +} /* cy_open */ + +/* + * cy_wait_until_sent() --- wait until the transmitter is empty + */ +static void cy_wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct cyclades_card *card; + struct cyclades_port *info = tty->driver_data; + unsigned long orig_jiffies; + int char_time; + + if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) + return; + + if (info->xmit_fifo_size == 0) + return; /* Just in case.... */ + + orig_jiffies = jiffies; + /* + * Set the check interval to be 1/5 of the estimated time to + * send a single character, and make it at least 1. The check + * interval should also be less than the timeout. + * + * Note: we have to use pretty tight timings here to satisfy + * the NIST-PCTS. + */ + char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; + char_time = char_time / 5; + if (char_time <= 0) + char_time = 1; + if (timeout < 0) + timeout = 0; + if (timeout) + char_time = min(char_time, timeout); + /* + * If the transmitter hasn't cleared in twice the approximate + * amount of time to send the entire FIFO, it probably won't + * ever clear. This assumes the UART isn't doing flow + * control, which is currently the case. Hence, if it ever + * takes longer than info->timeout, this is probably due to a + * UART bug of some kind. So, we clamp the timeout parameter at + * 2*info->timeout. + */ + if (!timeout || timeout > 2 * info->timeout) + timeout = 2 * info->timeout; +#ifdef CY_DEBUG_WAIT_UNTIL_SENT + printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", + timeout, char_time, jiffies); +#endif + card = info->card; + if (!cy_is_Z(card)) { + while (cyy_readb(info, CySRER) & CyTxRdy) { +#ifdef CY_DEBUG_WAIT_UNTIL_SENT + printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); +#endif + if (msleep_interruptible(jiffies_to_msecs(char_time))) + break; + if (timeout && time_after(jiffies, orig_jiffies + + timeout)) + break; + } + } + /* Run one more char cycle */ + msleep_interruptible(jiffies_to_msecs(char_time * 5)); +#ifdef CY_DEBUG_WAIT_UNTIL_SENT + printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); +#endif +} + +static void cy_flush_buffer(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + int channel, retval; + unsigned long flags; + +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) + return; + + card = info->card; + channel = info->line - card->first_line; + + spin_lock_irqsave(&card->card_lock, flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + spin_unlock_irqrestore(&card->card_lock, flags); + + if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board + buffers as well */ + spin_lock_irqsave(&card->card_lock, flags); + retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " + "was %x\n", info->line, retval); + } + spin_unlock_irqrestore(&card->card_lock, flags); + } + tty_wakeup(tty); +} /* cy_flush_buffer */ + + +static void cy_do_close(struct tty_port *port) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + struct cyclades_card *card; + unsigned long flags; + int channel; + + card = info->card; + channel = info->line - card->first_line; + spin_lock_irqsave(&card->card_lock, flags); + + if (!cy_is_Z(card)) { + /* Stop accepting input */ + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); + if (info->port.flags & ASYNC_INITIALIZED) { + /* Waiting for on-board buffers to be empty before + closing the port */ + spin_unlock_irqrestore(&card->card_lock, flags); + cy_wait_until_sent(port->tty, info->timeout); + spin_lock_irqsave(&card->card_lock, flags); + } + } else { +#ifdef Z_WAKE + /* Waiting for on-board buffers to be empty before closing + the port */ + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; + int retval; + + if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { + retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); + if (retval != 0) { + printk(KERN_DEBUG "cyc:cy_close retval on " + "ttyC%d was %x\n", info->line, retval); + } + spin_unlock_irqrestore(&card->card_lock, flags); + wait_for_completion_interruptible(&info->shutdown_wait); + spin_lock_irqsave(&card->card_lock, flags); + } +#endif + } + spin_unlock_irqrestore(&card->card_lock, flags); + cy_shutdown(info, port->tty); +} + +/* + * This routine is called when a particular tty device is closed. + */ +static void cy_close(struct tty_struct *tty, struct file *filp) +{ + struct cyclades_port *info = tty->driver_data; + if (!info || serial_paranoia_check(info, tty->name, "cy_close")) + return; + tty_port_close(&info->port, tty, filp); +} /* cy_close */ + +/* This routine gets called when tty_write has put something into + * the write_queue. The characters may come from user space or + * kernel space. + * + * This routine will return the number of characters actually + * accepted for writing. + * + * If the port is not already transmitting stuff, start it off by + * enabling interrupts. The interrupt service routine will then + * ensure that the characters are sent. + * If the port is already active, there is no need to kick it. + * + */ +static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + int c, ret = 0; + +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_write")) + return 0; + + if (!info->port.xmit_buf) + return 0; + + spin_lock_irqsave(&info->card->card_lock, flags); + while (1) { + c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); + c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); + + if (c <= 0) + break; + + memcpy(info->port.xmit_buf + info->xmit_head, buf, c); + info->xmit_head = (info->xmit_head + c) & + (SERIAL_XMIT_SIZE - 1); + info->xmit_cnt += c; + buf += c; + count -= c; + ret += c; + } + spin_unlock_irqrestore(&info->card->card_lock, flags); + + info->idle_stats.xmit_bytes += ret; + info->idle_stats.xmit_idle = jiffies; + + if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) + start_xmit(info); + + return ret; +} /* cy_write */ + +/* + * This routine is called by the kernel to write a single + * character to the tty device. If the kernel uses this routine, + * it must call the flush_chars() routine (if defined) when it is + * done stuffing characters into the driver. If there is no room + * in the queue, the character is ignored. + */ +static int cy_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_put_char")) + return 0; + + if (!info->port.xmit_buf) + return 0; + + spin_lock_irqsave(&info->card->card_lock, flags); + if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { + spin_unlock_irqrestore(&info->card->card_lock, flags); + return 0; + } + + info->port.xmit_buf[info->xmit_head++] = ch; + info->xmit_head &= SERIAL_XMIT_SIZE - 1; + info->xmit_cnt++; + info->idle_stats.xmit_bytes++; + info->idle_stats.xmit_idle = jiffies; + spin_unlock_irqrestore(&info->card->card_lock, flags); + return 1; +} /* cy_put_char */ + +/* + * This routine is called by the kernel after it has written a + * series of characters to the tty device using put_char(). + */ +static void cy_flush_chars(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) + return; + + if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || + !info->port.xmit_buf) + return; + + start_xmit(info); +} /* cy_flush_chars */ + +/* + * This routine returns the numbers of characters the tty driver + * will accept for queuing to be written. This number is subject + * to change as output buffers get emptied, or if the output flow + * control is activated. + */ +static int cy_write_room(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + int ret; + +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_write_room")) + return 0; + ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; + if (ret < 0) + ret = 0; + return ret; +} /* cy_write_room */ + +static int cy_chars_in_buffer(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + + if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) + return 0; + +#ifdef Z_EXT_CHARS_IN_BUFFER + if (!cy_is_Z(info->card)) { +#endif /* Z_EXT_CHARS_IN_BUFFER */ +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", + info->line, info->xmit_cnt); +#endif + return info->xmit_cnt; +#ifdef Z_EXT_CHARS_IN_BUFFER + } else { + struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; + int char_count; + __u32 tx_put, tx_get, tx_bufsize; + + tx_get = readl(&buf_ctrl->tx_get); + tx_put = readl(&buf_ctrl->tx_put); + tx_bufsize = readl(&buf_ctrl->tx_bufsize); + if (tx_put >= tx_get) + char_count = tx_put - tx_get; + else + char_count = tx_put - tx_get + tx_bufsize; +#ifdef CY_DEBUG_IO + printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", + info->line, info->xmit_cnt + char_count); +#endif + return info->xmit_cnt + char_count; + } +#endif /* Z_EXT_CHARS_IN_BUFFER */ +} /* cy_chars_in_buffer */ + +/* + * ------------------------------------------------------------ + * cy_ioctl() and friends + * ------------------------------------------------------------ + */ + +static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) +{ + int co, co_val, bpr; + __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : + 25000000); + + if (baud == 0) { + info->tbpr = info->tco = info->rbpr = info->rco = 0; + return; + } + + /* determine which prescaler to use */ + for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { + if (cy_clock / co_val / baud > 63) + break; + } + + bpr = (cy_clock / co_val * 2 / baud + 1) / 2; + if (bpr > 255) + bpr = 255; + + info->tbpr = info->rbpr = bpr; + info->tco = info->rco = co; +} + +/* + * This routine finds or computes the various line characteristics. + * It used to be called config_setup + */ +static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) +{ + struct cyclades_card *card; + unsigned long flags; + int channel; + unsigned cflag, iflag; + int baud, baud_rate = 0; + int i; + + if (!tty->termios) /* XXX can this happen at all? */ + return; + + if (info->line == -1) + return; + + cflag = tty->termios->c_cflag; + iflag = tty->termios->c_iflag; + + /* + * Set up the tty->alt_speed kludge + */ + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + tty->alt_speed = 57600; + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + tty->alt_speed = 115200; + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + tty->alt_speed = 230400; + if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + tty->alt_speed = 460800; + + card = info->card; + channel = info->line - card->first_line; + + if (!cy_is_Z(card)) { + u32 cflags; + + /* baud rate */ + baud = tty_get_baud_rate(tty); + if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == + ASYNC_SPD_CUST) { + if (info->custom_divisor) + baud_rate = info->baud / info->custom_divisor; + else + baud_rate = info->baud; + } else if (baud > CD1400_MAX_SPEED) { + baud = CD1400_MAX_SPEED; + } + /* find the baud index */ + for (i = 0; i < 20; i++) { + if (baud == baud_table[i]) + break; + } + if (i == 20) + i = 19; /* CD1400_MAX_SPEED */ + + if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == + ASYNC_SPD_CUST) { + cyy_baud_calc(info, baud_rate); + } else { + if (info->chip_rev >= CD1400_REV_J) { + /* It is a CD1400 rev. J or later */ + info->tbpr = baud_bpr_60[i]; /* Tx BPR */ + info->tco = baud_co_60[i]; /* Tx CO */ + info->rbpr = baud_bpr_60[i]; /* Rx BPR */ + info->rco = baud_co_60[i]; /* Rx CO */ + } else { + info->tbpr = baud_bpr_25[i]; /* Tx BPR */ + info->tco = baud_co_25[i]; /* Tx CO */ + info->rbpr = baud_bpr_25[i]; /* Rx BPR */ + info->rco = baud_co_25[i]; /* Rx CO */ + } + } + if (baud_table[i] == 134) { + /* get it right for 134.5 baud */ + info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + + 2; + } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == + ASYNC_SPD_CUST) { + info->timeout = (info->xmit_fifo_size * HZ * 15 / + baud_rate) + 2; + } else if (baud_table[i]) { + info->timeout = (info->xmit_fifo_size * HZ * 15 / + baud_table[i]) + 2; + /* this needs to be propagated into the card info */ + } else { + info->timeout = 0; + } + /* By tradition (is it a standard?) a baud rate of zero + implies the line should be/has been closed. A bit + later in this routine such a test is performed. */ + + /* byte size and parity */ + info->cor5 = 0; + info->cor4 = 0; + /* receive threshold */ + info->cor3 = (info->default_threshold ? + info->default_threshold : baud_cor3[i]); + info->cor2 = CyETC; + switch (cflag & CSIZE) { + case CS5: + info->cor1 = Cy_5_BITS; + break; + case CS6: + info->cor1 = Cy_6_BITS; + break; + case CS7: + info->cor1 = Cy_7_BITS; + break; + case CS8: + info->cor1 = Cy_8_BITS; + break; + } + if (cflag & CSTOPB) + info->cor1 |= Cy_2_STOP; + + if (cflag & PARENB) { + if (cflag & PARODD) + info->cor1 |= CyPARITY_O; + else + info->cor1 |= CyPARITY_E; + } else + info->cor1 |= CyPARITY_NONE; + + /* CTS flow control flag */ + if (cflag & CRTSCTS) { + info->port.flags |= ASYNC_CTS_FLOW; + info->cor2 |= CyCtsAE; + } else { + info->port.flags &= ~ASYNC_CTS_FLOW; + info->cor2 &= ~CyCtsAE; + } + if (cflag & CLOCAL) + info->port.flags &= ~ASYNC_CHECK_CD; + else + info->port.flags |= ASYNC_CHECK_CD; + + /*********************************************** + The hardware option, CyRtsAO, presents RTS when + the chip has characters to send. Since most modems + use RTS as reverse (inbound) flow control, this + option is not used. If inbound flow control is + necessary, DTR can be programmed to provide the + appropriate signals for use with a non-standard + cable. Contact Marcio Saito for details. + ***********************************************/ + + channel &= 0x03; + + spin_lock_irqsave(&card->card_lock, flags); + cyy_writeb(info, CyCAR, channel); + + /* tx and rx baud rate */ + + cyy_writeb(info, CyTCOR, info->tco); + cyy_writeb(info, CyTBPR, info->tbpr); + cyy_writeb(info, CyRCOR, info->rco); + cyy_writeb(info, CyRBPR, info->rbpr); + + /* set line characteristics according configuration */ + + cyy_writeb(info, CySCHR1, START_CHAR(tty)); + cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); + cyy_writeb(info, CyCOR1, info->cor1); + cyy_writeb(info, CyCOR2, info->cor2); + cyy_writeb(info, CyCOR3, info->cor3); + cyy_writeb(info, CyCOR4, info->cor4); + cyy_writeb(info, CyCOR5, info->cor5); + + cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | + CyCOR3ch); + + /* !!! Is this needed? */ + cyy_writeb(info, CyCAR, channel); + cyy_writeb(info, CyRTPR, + (info->default_timeout ? info->default_timeout : 0x02)); + /* 10ms rx timeout */ + + cflags = CyCTS; + if (!C_CLOCAL(tty)) + cflags |= CyDSR | CyRI | CyDCD; + /* without modem intr */ + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); + /* act on 1->0 modem transitions */ + if ((cflag & CRTSCTS) && info->rflow) + cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); + else + cyy_writeb(info, CyMCOR1, cflags); + /* act on 0->1 modem transitions */ + cyy_writeb(info, CyMCOR2, cflags); + + if (i == 0) /* baud rate is zero, turn off line */ + cyy_change_rts_dtr(info, 0, TIOCM_DTR); + else + cyy_change_rts_dtr(info, TIOCM_DTR, 0); + + clear_bit(TTY_IO_ERROR, &tty->flags); + spin_unlock_irqrestore(&card->card_lock, flags); + + } else { + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; + __u32 sw_flow; + int retval; + + if (!cyz_is_loaded(card)) + return; + + /* baud rate */ + baud = tty_get_baud_rate(tty); + if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == + ASYNC_SPD_CUST) { + if (info->custom_divisor) + baud_rate = info->baud / info->custom_divisor; + else + baud_rate = info->baud; + } else if (baud > CYZ_MAX_SPEED) { + baud = CYZ_MAX_SPEED; + } + cy_writel(&ch_ctrl->comm_baud, baud); + + if (baud == 134) { + /* get it right for 134.5 baud */ + info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + + 2; + } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == + ASYNC_SPD_CUST) { + info->timeout = (info->xmit_fifo_size * HZ * 15 / + baud_rate) + 2; + } else if (baud) { + info->timeout = (info->xmit_fifo_size * HZ * 15 / + baud) + 2; + /* this needs to be propagated into the card info */ + } else { + info->timeout = 0; + } + + /* byte size and parity */ + switch (cflag & CSIZE) { + case CS5: + cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); + break; + case CS6: + cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); + break; + case CS7: + cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); + break; + case CS8: + cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); + break; + } + if (cflag & CSTOPB) { + cy_writel(&ch_ctrl->comm_data_l, + readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); + } else { + cy_writel(&ch_ctrl->comm_data_l, + readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); + } + if (cflag & PARENB) { + if (cflag & PARODD) + cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); + else + cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); + } else + cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); + + /* CTS flow control flag */ + if (cflag & CRTSCTS) { + cy_writel(&ch_ctrl->hw_flow, + readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); + } else { + cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & + ~(C_RS_CTS | C_RS_RTS)); + } + /* As the HW flow control is done in firmware, the driver + doesn't need to care about it */ + info->port.flags &= ~ASYNC_CTS_FLOW; + + /* XON/XOFF/XANY flow control flags */ + sw_flow = 0; + if (iflag & IXON) { + sw_flow |= C_FL_OXX; + if (iflag & IXANY) + sw_flow |= C_FL_OIXANY; + } + cy_writel(&ch_ctrl->sw_flow, sw_flow); + + retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " + "was %x\n", info->line, retval); + } + + /* CD sensitivity */ + if (cflag & CLOCAL) + info->port.flags &= ~ASYNC_CHECK_CD; + else + info->port.flags |= ASYNC_CHECK_CD; + + if (baud == 0) { /* baud rate is zero, turn off line */ + cy_writel(&ch_ctrl->rs_control, + readl(&ch_ctrl->rs_control) & ~C_RS_DTR); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); +#endif + } else { + cy_writel(&ch_ctrl->rs_control, + readl(&ch_ctrl->rs_control) | C_RS_DTR); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); +#endif + } + + retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " + "was %x\n", info->line, retval); + } + + clear_bit(TTY_IO_ERROR, &tty->flags); + } +} /* set_line_char */ + +static int cy_get_serial_info(struct cyclades_port *info, + struct serial_struct __user *retinfo) +{ + struct cyclades_card *cinfo = info->card; + struct serial_struct tmp = { + .type = info->type, + .line = info->line, + .port = (info->card - cy_card) * 0x100 + info->line - + cinfo->first_line, + .irq = cinfo->irq, + .flags = info->port.flags, + .close_delay = info->port.close_delay, + .closing_wait = info->port.closing_wait, + .baud_base = info->baud, + .custom_divisor = info->custom_divisor, + .hub6 = 0, /*!!! */ + }; + return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; +} + +static int +cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, + struct serial_struct __user *new_info) +{ + struct serial_struct new_serial; + int ret; + + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) + return -EFAULT; + + mutex_lock(&info->port.mutex); + if (!capable(CAP_SYS_ADMIN)) { + if (new_serial.close_delay != info->port.close_delay || + new_serial.baud_base != info->baud || + (new_serial.flags & ASYNC_FLAGS & + ~ASYNC_USR_MASK) != + (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) + { + mutex_unlock(&info->port.mutex); + return -EPERM; + } + info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | + (new_serial.flags & ASYNC_USR_MASK); + info->baud = new_serial.baud_base; + info->custom_divisor = new_serial.custom_divisor; + goto check_and_exit; + } + + /* + * OK, past this point, all the error checking has been done. + * At this point, we start making changes..... + */ + + info->baud = new_serial.baud_base; + info->custom_divisor = new_serial.custom_divisor; + info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | + (new_serial.flags & ASYNC_FLAGS); + info->port.close_delay = new_serial.close_delay * HZ / 100; + info->port.closing_wait = new_serial.closing_wait * HZ / 100; + +check_and_exit: + if (info->port.flags & ASYNC_INITIALIZED) { + cy_set_line_char(info, tty); + ret = 0; + } else { + ret = cy_startup(info, tty); + } + mutex_unlock(&info->port.mutex); + return ret; +} /* set_serial_info */ + +/* + * get_lsr_info - get line status register info + * + * Purpose: Let user call ioctl() to get info when the UART physically + * is emptied. On bus types like RS485, the transmitter must + * release the bus after transmitting. This must be done when + * the transmit shift register is empty, not be done when the + * transmit holding register is empty. This functionality + * allows an RS485 driver to be written in user space. + */ +static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) +{ + struct cyclades_card *card = info->card; + unsigned int result; + unsigned long flags; + u8 status; + + if (!cy_is_Z(card)) { + spin_lock_irqsave(&card->card_lock, flags); + status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); + spin_unlock_irqrestore(&card->card_lock, flags); + result = (status ? 0 : TIOCSER_TEMT); + } else { + /* Not supported yet */ + return -EINVAL; + } + return put_user(result, (unsigned long __user *)value); +} + +static int cy_tiocmget(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + int result; + + if (serial_paranoia_check(info, tty->name, __func__)) + return -ENODEV; + + card = info->card; + + if (!cy_is_Z(card)) { + unsigned long flags; + int channel = info->line - card->first_line; + u8 status; + + spin_lock_irqsave(&card->card_lock, flags); + cyy_writeb(info, CyCAR, channel & 0x03); + status = cyy_readb(info, CyMSVR1); + status |= cyy_readb(info, CyMSVR2); + spin_unlock_irqrestore(&card->card_lock, flags); + + if (info->rtsdtr_inv) { + result = ((status & CyRTS) ? TIOCM_DTR : 0) | + ((status & CyDTR) ? TIOCM_RTS : 0); + } else { + result = ((status & CyRTS) ? TIOCM_RTS : 0) | + ((status & CyDTR) ? TIOCM_DTR : 0); + } + result |= ((status & CyDCD) ? TIOCM_CAR : 0) | + ((status & CyRI) ? TIOCM_RNG : 0) | + ((status & CyDSR) ? TIOCM_DSR : 0) | + ((status & CyCTS) ? TIOCM_CTS : 0); + } else { + u32 lstatus; + + if (!cyz_is_loaded(card)) { + result = -ENODEV; + goto end; + } + + lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); + result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | + ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | + ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | + ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | + ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | + ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); + } +end: + return result; +} /* cy_tiomget */ + +static int +cy_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, __func__)) + return -ENODEV; + + card = info->card; + if (!cy_is_Z(card)) { + spin_lock_irqsave(&card->card_lock, flags); + cyy_change_rts_dtr(info, set, clear); + spin_unlock_irqrestore(&card->card_lock, flags); + } else { + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; + int retval, channel = info->line - card->first_line; + u32 rs; + + if (!cyz_is_loaded(card)) + return -ENODEV; + + spin_lock_irqsave(&card->card_lock, flags); + rs = readl(&ch_ctrl->rs_control); + if (set & TIOCM_RTS) + rs |= C_RS_RTS; + if (clear & TIOCM_RTS) + rs &= ~C_RS_RTS; + if (set & TIOCM_DTR) { + rs |= C_RS_DTR; +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); +#endif + } + if (clear & TIOCM_DTR) { + rs &= ~C_RS_DTR; +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "cyc:set_modem_info clearing " + "Z DTR\n"); +#endif + } + cy_writel(&ch_ctrl->rs_control, rs); + retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); + spin_unlock_irqrestore(&card->card_lock, flags); + if (retval != 0) { + printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " + "was %x\n", info->line, retval); + } + } + return 0; +} + +/* + * cy_break() --- routine which turns the break handling on or off + */ +static int cy_break(struct tty_struct *tty, int break_state) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + unsigned long flags; + int retval = 0; + + if (serial_paranoia_check(info, tty->name, "cy_break")) + return -EINVAL; + + card = info->card; + + spin_lock_irqsave(&card->card_lock, flags); + if (!cy_is_Z(card)) { + /* Let the transmit ISR take care of this (since it + requires stuffing characters into the output stream). + */ + if (break_state == -1) { + if (!info->breakon) { + info->breakon = 1; + if (!info->xmit_cnt) { + spin_unlock_irqrestore(&card->card_lock, flags); + start_xmit(info); + spin_lock_irqsave(&card->card_lock, flags); + } + } + } else { + if (!info->breakoff) { + info->breakoff = 1; + if (!info->xmit_cnt) { + spin_unlock_irqrestore(&card->card_lock, flags); + start_xmit(info); + spin_lock_irqsave(&card->card_lock, flags); + } + } + } + } else { + if (break_state == -1) { + retval = cyz_issue_cmd(card, + info->line - card->first_line, + C_CM_SET_BREAK, 0L); + if (retval != 0) { + printk(KERN_ERR "cyc:cy_break (set) retval on " + "ttyC%d was %x\n", info->line, retval); + } + } else { + retval = cyz_issue_cmd(card, + info->line - card->first_line, + C_CM_CLR_BREAK, 0L); + if (retval != 0) { + printk(KERN_DEBUG "cyc:cy_break (clr) retval " + "on ttyC%d was %x\n", info->line, + retval); + } + } + } + spin_unlock_irqrestore(&card->card_lock, flags); + return retval; +} /* cy_break */ + +static int set_threshold(struct cyclades_port *info, unsigned long value) +{ + struct cyclades_card *card = info->card; + unsigned long flags; + + if (!cy_is_Z(card)) { + info->cor3 &= ~CyREC_FIFO; + info->cor3 |= value & CyREC_FIFO; + + spin_lock_irqsave(&card->card_lock, flags); + cyy_writeb(info, CyCOR3, info->cor3); + cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); + spin_unlock_irqrestore(&card->card_lock, flags); + } + return 0; +} /* set_threshold */ + +static int get_threshold(struct cyclades_port *info, + unsigned long __user *value) +{ + struct cyclades_card *card = info->card; + + if (!cy_is_Z(card)) { + u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; + return put_user(tmp, value); + } + return 0; +} /* get_threshold */ + +static int set_timeout(struct cyclades_port *info, unsigned long value) +{ + struct cyclades_card *card = info->card; + unsigned long flags; + + if (!cy_is_Z(card)) { + spin_lock_irqsave(&card->card_lock, flags); + cyy_writeb(info, CyRTPR, value & 0xff); + spin_unlock_irqrestore(&card->card_lock, flags); + } + return 0; +} /* set_timeout */ + +static int get_timeout(struct cyclades_port *info, + unsigned long __user *value) +{ + struct cyclades_card *card = info->card; + + if (!cy_is_Z(card)) { + u8 tmp = cyy_readb(info, CyRTPR); + return put_user(tmp, value); + } + return 0; +} /* get_timeout */ + +static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, + struct cyclades_icount *cprev) +{ + struct cyclades_icount cnow; + unsigned long flags; + int ret; + + spin_lock_irqsave(&info->card->card_lock, flags); + cnow = info->icount; /* atomic copy */ + spin_unlock_irqrestore(&info->card->card_lock, flags); + + ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || + ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || + ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || + ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); + + *cprev = cnow; + + return ret; +} + +/* + * This routine allows the tty driver to implement device- + * specific ioctl's. If the ioctl number passed in cmd is + * not recognized by the driver, it should return ENOIOCTLCMD. + */ +static int +cy_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_icount cnow; /* kernel counter temps */ + int ret_val = 0; + unsigned long flags; + void __user *argp = (void __user *)arg; + + if (serial_paranoia_check(info, tty->name, "cy_ioctl")) + return -ENODEV; + +#ifdef CY_DEBUG_OTHER + printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", + info->line, cmd, arg); +#endif + + switch (cmd) { + case CYGETMON: + if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { + ret_val = -EFAULT; + break; + } + memset(&info->mon, 0, sizeof(info->mon)); + break; + case CYGETTHRESH: + ret_val = get_threshold(info, argp); + break; + case CYSETTHRESH: + ret_val = set_threshold(info, arg); + break; + case CYGETDEFTHRESH: + ret_val = put_user(info->default_threshold, + (unsigned long __user *)argp); + break; + case CYSETDEFTHRESH: + info->default_threshold = arg & 0x0f; + break; + case CYGETTIMEOUT: + ret_val = get_timeout(info, argp); + break; + case CYSETTIMEOUT: + ret_val = set_timeout(info, arg); + break; + case CYGETDEFTIMEOUT: + ret_val = put_user(info->default_timeout, + (unsigned long __user *)argp); + break; + case CYSETDEFTIMEOUT: + info->default_timeout = arg & 0xff; + break; + case CYSETRFLOW: + info->rflow = (int)arg; + break; + case CYGETRFLOW: + ret_val = info->rflow; + break; + case CYSETRTSDTR_INV: + info->rtsdtr_inv = (int)arg; + break; + case CYGETRTSDTR_INV: + ret_val = info->rtsdtr_inv; + break; + case CYGETCD1400VER: + ret_val = info->chip_rev; + break; +#ifndef CONFIG_CYZ_INTR + case CYZSETPOLLCYCLE: + cyz_polling_cycle = (arg * HZ) / 1000; + break; + case CYZGETPOLLCYCLE: + ret_val = (cyz_polling_cycle * 1000) / HZ; + break; +#endif /* CONFIG_CYZ_INTR */ + case CYSETWAIT: + info->port.closing_wait = (unsigned short)arg * HZ / 100; + break; + case CYGETWAIT: + ret_val = info->port.closing_wait / (HZ / 100); + break; + case TIOCGSERIAL: + ret_val = cy_get_serial_info(info, argp); + break; + case TIOCSSERIAL: + ret_val = cy_set_serial_info(info, tty, argp); + break; + case TIOCSERGETLSR: /* Get line status register */ + ret_val = get_lsr_info(info, argp); + break; + /* + * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change + * - mask passed in arg for lines of interest + * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) + * Caller should use TIOCGICOUNT to see which one it was + */ + case TIOCMIWAIT: + spin_lock_irqsave(&info->card->card_lock, flags); + /* note the counters on entry */ + cnow = info->icount; + spin_unlock_irqrestore(&info->card->card_lock, flags); + ret_val = wait_event_interruptible(info->port.delta_msr_wait, + cy_cflags_changed(info, arg, &cnow)); + break; + + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ + default: + ret_val = -ENOIOCTLCMD; + } + +#ifdef CY_DEBUG_OTHER + printk(KERN_DEBUG "cyc:cy_ioctl done\n"); +#endif + return ret_val; +} /* cy_ioctl */ + +static int cy_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *sic) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_icount cnow; /* Used to snapshot */ + unsigned long flags; + + spin_lock_irqsave(&info->card->card_lock, flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->card->card_lock, flags); + + sic->cts = cnow.cts; + sic->dsr = cnow.dsr; + sic->rng = cnow.rng; + sic->dcd = cnow.dcd; + sic->rx = cnow.rx; + sic->tx = cnow.tx; + sic->frame = cnow.frame; + sic->overrun = cnow.overrun; + sic->parity = cnow.parity; + sic->brk = cnow.brk; + sic->buf_overrun = cnow.buf_overrun; + return 0; +} + +/* + * This routine allows the tty driver to be notified when + * device's termios settings have changed. Note that a + * well-designed tty driver should be prepared to accept the case + * where old == NULL, and try to do something rational. + */ +static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + struct cyclades_port *info = tty->driver_data; + +#ifdef CY_DEBUG_OTHER + printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); +#endif + + cy_set_line_char(info, tty); + + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + cy_start(tty); + } +#if 0 + /* + * No need to wake up processes in open wait, since they + * sample the CLOCAL flag once, and don't recheck it. + * XXX It's not clear whether the current behavior is correct + * or not. Hence, this may change..... + */ + if (!(old_termios->c_cflag & CLOCAL) && + (tty->termios->c_cflag & CLOCAL)) + wake_up_interruptible(&info->port.open_wait); +#endif +} /* cy_set_termios */ + +/* This function is used to send a high-priority XON/XOFF character to + the device. +*/ +static void cy_send_xchar(struct tty_struct *tty, char ch) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + int channel; + + if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) + return; + + info->x_char = ch; + + if (ch) + cy_start(tty); + + card = info->card; + channel = info->line - card->first_line; + + if (cy_is_Z(card)) { + if (ch == STOP_CHAR(tty)) + cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); + else if (ch == START_CHAR(tty)) + cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); + } +} + +/* This routine is called by the upper-layer tty layer to signal + that incoming characters should be throttled because the input + buffers are close to full. + */ +static void cy_throttle(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + unsigned long flags; + +#ifdef CY_DEBUG_THROTTLE + char buf[64]; + + printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), + tty->ldisc.chars_in_buffer(tty), info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_throttle")) + return; + + card = info->card; + + if (I_IXOFF(tty)) { + if (!cy_is_Z(card)) + cy_send_xchar(tty, STOP_CHAR(tty)); + else + info->throttle = 1; + } + + if (tty->termios->c_cflag & CRTSCTS) { + if (!cy_is_Z(card)) { + spin_lock_irqsave(&card->card_lock, flags); + cyy_change_rts_dtr(info, 0, TIOCM_RTS); + spin_unlock_irqrestore(&card->card_lock, flags); + } else { + info->throttle = 1; + } + } +} /* cy_throttle */ + +/* + * This routine notifies the tty driver that it should signal + * that characters can now be sent to the tty without fear of + * overrunning the input buffers of the line disciplines. + */ +static void cy_unthrottle(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + struct cyclades_card *card; + unsigned long flags; + +#ifdef CY_DEBUG_THROTTLE + char buf[64]; + + printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", + tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) + return; + + if (I_IXOFF(tty)) { + if (info->x_char) + info->x_char = 0; + else + cy_send_xchar(tty, START_CHAR(tty)); + } + + if (tty->termios->c_cflag & CRTSCTS) { + card = info->card; + if (!cy_is_Z(card)) { + spin_lock_irqsave(&card->card_lock, flags); + cyy_change_rts_dtr(info, TIOCM_RTS, 0); + spin_unlock_irqrestore(&card->card_lock, flags); + } else { + info->throttle = 0; + } + } +} /* cy_unthrottle */ + +/* cy_start and cy_stop provide software output flow control as a + function of XON/XOFF, software CTS, and other such stuff. +*/ +static void cy_stop(struct tty_struct *tty) +{ + struct cyclades_card *cinfo; + struct cyclades_port *info = tty->driver_data; + int channel; + unsigned long flags; + +#ifdef CY_DEBUG_OTHER + printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_stop")) + return; + + cinfo = info->card; + channel = info->line - cinfo->first_line; + if (!cy_is_Z(cinfo)) { + spin_lock_irqsave(&cinfo->card_lock, flags); + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); + spin_unlock_irqrestore(&cinfo->card_lock, flags); + } +} /* cy_stop */ + +static void cy_start(struct tty_struct *tty) +{ + struct cyclades_card *cinfo; + struct cyclades_port *info = tty->driver_data; + int channel; + unsigned long flags; + +#ifdef CY_DEBUG_OTHER + printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_start")) + return; + + cinfo = info->card; + channel = info->line - cinfo->first_line; + if (!cy_is_Z(cinfo)) { + spin_lock_irqsave(&cinfo->card_lock, flags); + cyy_writeb(info, CyCAR, channel & 0x03); + cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); + spin_unlock_irqrestore(&cinfo->card_lock, flags); + } +} /* cy_start */ + +/* + * cy_hangup() --- called by tty_hangup() when a hangup is signaled. + */ +static void cy_hangup(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + +#ifdef CY_DEBUG_OTHER + printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_hangup")) + return; + + cy_flush_buffer(tty); + cy_shutdown(info, tty); + tty_port_hangup(&info->port); +} /* cy_hangup */ + +static int cyy_carrier_raised(struct tty_port *port) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + struct cyclades_card *cinfo = info->card; + unsigned long flags; + int channel = info->line - cinfo->first_line; + u32 cd; + + spin_lock_irqsave(&cinfo->card_lock, flags); + cyy_writeb(info, CyCAR, channel & 0x03); + cd = cyy_readb(info, CyMSVR1) & CyDCD; + spin_unlock_irqrestore(&cinfo->card_lock, flags); + + return cd; +} + +static void cyy_dtr_rts(struct tty_port *port, int raise) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + struct cyclades_card *cinfo = info->card; + unsigned long flags; + + spin_lock_irqsave(&cinfo->card_lock, flags); + cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, + raise ? 0 : TIOCM_RTS | TIOCM_DTR); + spin_unlock_irqrestore(&cinfo->card_lock, flags); +} + +static int cyz_carrier_raised(struct tty_port *port) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + + return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; +} + +static void cyz_dtr_rts(struct tty_port *port, int raise) +{ + struct cyclades_port *info = container_of(port, struct cyclades_port, + port); + struct cyclades_card *cinfo = info->card; + struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; + int ret, channel = info->line - cinfo->first_line; + u32 rs; + + rs = readl(&ch_ctrl->rs_control); + if (raise) + rs |= C_RS_RTS | C_RS_DTR; + else + rs &= ~(C_RS_RTS | C_RS_DTR); + cy_writel(&ch_ctrl->rs_control, rs); + ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); + if (ret != 0) + printk(KERN_ERR "%s: retval on ttyC%d was %x\n", + __func__, info->line, ret); +#ifdef CY_DEBUG_DTR + printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); +#endif +} + +static const struct tty_port_operations cyy_port_ops = { + .carrier_raised = cyy_carrier_raised, + .dtr_rts = cyy_dtr_rts, + .shutdown = cy_do_close, +}; + +static const struct tty_port_operations cyz_port_ops = { + .carrier_raised = cyz_carrier_raised, + .dtr_rts = cyz_dtr_rts, + .shutdown = cy_do_close, +}; + +/* + * --------------------------------------------------------------------- + * cy_init() and friends + * + * cy_init() is called at boot-time to initialize the serial driver. + * --------------------------------------------------------------------- + */ + +static int __devinit cy_init_card(struct cyclades_card *cinfo) +{ + struct cyclades_port *info; + unsigned int channel, port; + + spin_lock_init(&cinfo->card_lock); + cinfo->intr_enabled = 0; + + cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), + GFP_KERNEL); + if (cinfo->ports == NULL) { + printk(KERN_ERR "Cyclades: cannot allocate ports\n"); + return -ENOMEM; + } + + for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; + channel++, port++) { + info = &cinfo->ports[channel]; + tty_port_init(&info->port); + info->magic = CYCLADES_MAGIC; + info->card = cinfo; + info->line = port; + + info->port.closing_wait = CLOSING_WAIT_DELAY; + info->port.close_delay = 5 * HZ / 10; + info->port.flags = STD_COM_FLAGS; + init_completion(&info->shutdown_wait); + + if (cy_is_Z(cinfo)) { + struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; + struct ZFW_CTRL *zfw_ctrl; + + info->port.ops = &cyz_port_ops; + info->type = PORT_STARTECH; + + zfw_ctrl = cinfo->base_addr + + (readl(&firm_id->zfwctrl_addr) & 0xfffff); + info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; + info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; + + if (cinfo->hw_ver == ZO_V1) + info->xmit_fifo_size = CYZ_FIFO_SIZE; + else + info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; +#ifdef CONFIG_CYZ_INTR + setup_timer(&cyz_rx_full_timer[port], + cyz_rx_restart, (unsigned long)info); +#endif + } else { + unsigned short chip_number; + int index = cinfo->bus_index; + + info->port.ops = &cyy_port_ops; + info->type = PORT_CIRRUS; + info->xmit_fifo_size = CyMAX_CHAR_FIFO; + info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; + info->cor2 = CyETC; + info->cor3 = 0x08; /* _very_ small rcv threshold */ + + chip_number = channel / CyPORTS_PER_CHIP; + info->u.cyy.base_addr = cinfo->base_addr + + (cy_chip_offset[chip_number] << index); + info->chip_rev = cyy_readb(info, CyGFRCR); + + if (info->chip_rev >= CD1400_REV_J) { + /* It is a CD1400 rev. J or later */ + info->tbpr = baud_bpr_60[13]; /* Tx BPR */ + info->tco = baud_co_60[13]; /* Tx CO */ + info->rbpr = baud_bpr_60[13]; /* Rx BPR */ + info->rco = baud_co_60[13]; /* Rx CO */ + info->rtsdtr_inv = 1; + } else { + info->tbpr = baud_bpr_25[13]; /* Tx BPR */ + info->tco = baud_co_25[13]; /* Tx CO */ + info->rbpr = baud_bpr_25[13]; /* Rx BPR */ + info->rco = baud_co_25[13]; /* Rx CO */ + info->rtsdtr_inv = 0; + } + info->read_status_mask = CyTIMEOUT | CySPECHAR | + CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; + } + + } + +#ifndef CONFIG_CYZ_INTR + if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { + mod_timer(&cyz_timerlist, jiffies + 1); +#ifdef CY_PCI_DEBUG + printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); +#endif + } +#endif + return 0; +} + +/* initialize chips on Cyclom-Y card -- return number of valid + chips (which is number of ports/4) */ +static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, + int index) +{ + unsigned int chip_number; + void __iomem *base_addr; + + cy_writeb(true_base_addr + (Cy_HwReset << index), 0); + /* Cy_HwReset is 0x1400 */ + cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); + /* Cy_ClrIntr is 0x1800 */ + udelay(500L); + + for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; + chip_number++) { + base_addr = + true_base_addr + (cy_chip_offset[chip_number] << index); + mdelay(1); + if (readb(base_addr + (CyCCR << index)) != 0x00) { + /************* + printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", + chip_number, (unsigned long)base_addr); + *************/ + return chip_number; + } + + cy_writeb(base_addr + (CyGFRCR << index), 0); + udelay(10L); + + /* The Cyclom-16Y does not decode address bit 9 and therefore + cannot distinguish between references to chip 0 and a non- + existent chip 4. If the preceding clearing of the supposed + chip 4 GFRCR register appears at chip 0, there is no chip 4 + and this must be a Cyclom-16Y, not a Cyclom-32Ye. + */ + if (chip_number == 4 && readb(true_base_addr + + (cy_chip_offset[0] << index) + + (CyGFRCR << index)) == 0) { + return chip_number; + } + + cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); + mdelay(1); + + if (readb(base_addr + (CyGFRCR << index)) == 0x00) { + /* + printk(" chip #%d at %#6lx is not responding ", + chip_number, (unsigned long)base_addr); + printk("(GFRCR stayed 0)\n", + */ + return chip_number; + } + if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != + 0x40) { + /* + printk(" chip #%d at %#6lx is not valid (GFRCR == " + "%#2x)\n", + chip_number, (unsigned long)base_addr, + base_addr[CyGFRCR<= CD1400_REV_J) { + /* It is a CD1400 rev. J or later */ + /* Impossible to reach 5ms with this chip. + Changed to 2ms instead (f = 500 Hz). */ + cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); + } else { + /* f = 200 Hz */ + cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); + } + + /* + printk(" chip #%d at %#6lx is rev 0x%2x\n", + chip_number, (unsigned long)base_addr, + readb(base_addr+(CyGFRCR< NR_PORTS) { + printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " + "more channels are available. Change NR_PORTS " + "in cyclades.c and recompile kernel.\n", + (unsigned long)cy_isa_address); + iounmap(cy_isa_address); + return nboard; + } + /* fill the next cy_card structure available */ + for (j = 0; j < NR_CARDS; j++) { + if (cy_card[j].base_addr == NULL) + break; + } + if (j == NR_CARDS) { /* no more cy_cards available */ + printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " + "more cards can be used. Change NR_CARDS in " + "cyclades.c and recompile kernel.\n", + (unsigned long)cy_isa_address); + iounmap(cy_isa_address); + return nboard; + } + + /* allocate IRQ */ + if (request_irq(cy_isa_irq, cyy_interrupt, + IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { + printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " + "could not allocate IRQ#%d.\n", + (unsigned long)cy_isa_address, cy_isa_irq); + iounmap(cy_isa_address); + return nboard; + } + + /* set cy_card */ + cy_card[j].base_addr = cy_isa_address; + cy_card[j].ctl_addr.p9050 = NULL; + cy_card[j].irq = (int)cy_isa_irq; + cy_card[j].bus_index = 0; + cy_card[j].first_line = cy_next_channel; + cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; + cy_card[j].nports = cy_isa_nchan; + if (cy_init_card(&cy_card[j])) { + cy_card[j].base_addr = NULL; + free_irq(cy_isa_irq, &cy_card[j]); + iounmap(cy_isa_address); + continue; + } + nboard++; + + printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " + "%d channels starting from port %d\n", + j + 1, (unsigned long)cy_isa_address, + (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), + cy_isa_irq, cy_isa_nchan, cy_next_channel); + + for (j = cy_next_channel; + j < cy_next_channel + cy_isa_nchan; j++) + tty_register_device(cy_serial_driver, j, NULL); + cy_next_channel += cy_isa_nchan; + } + return nboard; +#else + return 0; +#endif /* CONFIG_ISA */ +} /* cy_detect_isa */ + +#ifdef CONFIG_PCI +static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) +{ + unsigned int a; + + for (a = 0; a < size && *str; a++, str++) + if (*str & 0x80) + return -EINVAL; + + for (; a < size; a++, str++) + if (*str) + return -EINVAL; + + return 0; +} + +static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, + unsigned int size) +{ + for (; size > 0; size--) { + cy_writel(fpga, *data++); + udelay(10); + } +} + +static void __devinit plx_init(struct pci_dev *pdev, int irq, + struct RUNTIME_9060 __iomem *addr) +{ + /* Reset PLX */ + cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); + udelay(100L); + cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); + + /* Reload Config. Registers from EEPROM */ + cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); + udelay(100L); + cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); + + /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, + * the IRQ is lost and, thus, we have to re-write it to the PCI config. + * registers. This will remain here until we find a permanent fix. + */ + pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); +} + +static int __devinit __cyz_load_fw(const struct firmware *fw, + const char *name, const u32 mailbox, void __iomem *base, + void __iomem *fpga) +{ + const void *ptr = fw->data; + const struct zfile_header *h = ptr; + const struct zfile_config *c, *cs; + const struct zfile_block *b, *bs; + unsigned int a, tmp, len = fw->size; +#define BAD_FW KERN_ERR "Bad firmware: " + if (len < sizeof(*h)) { + printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); + return -EINVAL; + } + + cs = ptr + h->config_offset; + bs = ptr + h->block_offset; + + if ((void *)(cs + h->n_config) > ptr + len || + (void *)(bs + h->n_blocks) > ptr + len) { + printk(BAD_FW "too short"); + return -EINVAL; + } + + if (cyc_isfwstr(h->name, sizeof(h->name)) || + cyc_isfwstr(h->date, sizeof(h->date))) { + printk(BAD_FW "bad formatted header string\n"); + return -EINVAL; + } + + if (strncmp(name, h->name, sizeof(h->name))) { + printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); + return -EINVAL; + } + + tmp = 0; + for (c = cs; c < cs + h->n_config; c++) { + for (a = 0; a < c->n_blocks; a++) + if (c->block_list[a] > h->n_blocks) { + printk(BAD_FW "bad block ref number in cfgs\n"); + return -EINVAL; + } + if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ + tmp++; + } + if (!tmp) { + printk(BAD_FW "nothing appropriate\n"); + return -EINVAL; + } + + for (b = bs; b < bs + h->n_blocks; b++) + if (b->file_offset + b->size > len) { + printk(BAD_FW "bad block data offset\n"); + return -EINVAL; + } + + /* everything is OK, let's seek'n'load it */ + for (c = cs; c < cs + h->n_config; c++) + if (c->mailbox == mailbox && c->function == 0) + break; + + for (a = 0; a < c->n_blocks; a++) { + b = &bs[c->block_list[a]]; + if (b->type == ZBLOCK_FPGA) { + if (fpga != NULL) + cyz_fpga_copy(fpga, ptr + b->file_offset, + b->size); + } else { + if (base != NULL) + memcpy_toio(base + b->ram_offset, + ptr + b->file_offset, b->size); + } + } +#undef BAD_FW + return 0; +} + +static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, + struct RUNTIME_9060 __iomem *ctl_addr, int irq) +{ + const struct firmware *fw; + struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; + struct CUSTOM_REG __iomem *cust = base_addr; + struct ZFW_CTRL __iomem *pt_zfwctrl; + void __iomem *tmp; + u32 mailbox, status, nchan; + unsigned int i; + int retval; + + retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); + if (retval) { + dev_err(&pdev->dev, "can't get firmware\n"); + goto err; + } + + /* Check whether the firmware is already loaded and running. If + positive, skip this board */ + if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { + u32 cntval = readl(base_addr + 0x190); + + udelay(100); + if (cntval != readl(base_addr + 0x190)) { + /* FW counter is working, FW is running */ + dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " + "Skipping board.\n"); + retval = 0; + goto err_rel; + } + } + + /* start boot */ + cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & + ~0x00030800UL); + + mailbox = readl(&ctl_addr->mail_box_0); + + if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { + /* stops CPU and set window to beginning of RAM */ + cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); + cy_writel(&cust->cpu_stop, 0); + cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); + udelay(100); + } + + plx_init(pdev, irq, ctl_addr); + + if (mailbox != 0) { + /* load FPGA */ + retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, + base_addr); + if (retval) + goto err_rel; + if (!__cyz_fpga_loaded(ctl_addr)) { + dev_err(&pdev->dev, "fw upload successful, but fw is " + "not loaded\n"); + goto err_rel; + } + } + + /* stops CPU and set window to beginning of RAM */ + cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); + cy_writel(&cust->cpu_stop, 0); + cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); + udelay(100); + + /* clear memory */ + for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) + cy_writeb(tmp, 255); + if (mailbox != 0) { + /* set window to last 512K of RAM */ + cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); + for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) + cy_writeb(tmp, 255); + /* set window to beginning of RAM */ + cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); + } + + retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); + release_firmware(fw); + if (retval) + goto err; + + /* finish boot and start boards */ + cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); + cy_writel(&cust->cpu_start, 0); + cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); + i = 0; + while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) + msleep(100); + if (status != ZFIRM_ID) { + if (status == ZFIRM_HLT) { + dev_err(&pdev->dev, "you need an external power supply " + "for this number of ports. Firmware halted and " + "board reset.\n"); + retval = -EIO; + goto err; + } + dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " + "some more time\n", status); + while ((status = readl(&fid->signature)) != ZFIRM_ID && + i++ < 200) + msleep(100); + if (status != ZFIRM_ID) { + dev_err(&pdev->dev, "Board not started in 20 seconds! " + "Giving up. (fid->signature = 0x%x)\n", + status); + dev_info(&pdev->dev, "*** Warning ***: if you are " + "upgrading the FW, please power cycle the " + "system before loading the new FW to the " + "Cyclades-Z.\n"); + + if (__cyz_fpga_loaded(ctl_addr)) + plx_init(pdev, irq, ctl_addr); + + retval = -EIO; + goto err; + } + dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", + i / 10); + } + pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); + + dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", + base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), + base_addr + readl(&fid->zfwctrl_addr)); + + nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); + dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", + readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); + + if (nchan == 0) { + dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " + "check the connection between the Z host card and the " + "serial expanders.\n"); + + if (__cyz_fpga_loaded(ctl_addr)) + plx_init(pdev, irq, ctl_addr); + + dev_info(&pdev->dev, "Null number of ports detected. Board " + "reset.\n"); + retval = 0; + goto err; + } + + cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); + cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); + + /* + Early firmware failed to start looking for commands. + This enables firmware interrupts for those commands. + */ + cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | + (1 << 17)); + cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | + 0x00030800UL); + + return nchan; +err_rel: + release_firmware(fw); +err: + return retval; +} + +static int __devinit cy_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + void __iomem *addr0 = NULL, *addr2 = NULL; + char *card_name = NULL; + u32 uninitialized_var(mailbox); + unsigned int device_id, nchan = 0, card_no, i; + unsigned char plx_ver; + int retval, irq; + + retval = pci_enable_device(pdev); + if (retval) { + dev_err(&pdev->dev, "cannot enable device\n"); + goto err; + } + + /* read PCI configuration area */ + irq = pdev->irq; + device_id = pdev->device & ~PCI_DEVICE_ID_MASK; + +#if defined(__alpha__) + if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ + dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " + "addresses on Alpha systems.\n"); + retval = -EIO; + goto err_dis; + } +#endif + if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { + dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " + "addresses\n"); + retval = -EIO; + goto err_dis; + } + + if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { + dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " + "it...\n"); + pdev->resource[2].flags &= ~IORESOURCE_IO; + } + + retval = pci_request_regions(pdev, "cyclades"); + if (retval) { + dev_err(&pdev->dev, "failed to reserve resources\n"); + goto err_dis; + } + + retval = -EIO; + if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || + device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { + card_name = "Cyclom-Y"; + + addr0 = ioremap_nocache(pci_resource_start(pdev, 0), + CyPCI_Yctl); + if (addr0 == NULL) { + dev_err(&pdev->dev, "can't remap ctl region\n"); + goto err_reg; + } + addr2 = ioremap_nocache(pci_resource_start(pdev, 2), + CyPCI_Ywin); + if (addr2 == NULL) { + dev_err(&pdev->dev, "can't remap base region\n"); + goto err_unmap; + } + + nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); + if (nchan == 0) { + dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " + "Serial-Modules\n"); + goto err_unmap; + } + } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { + struct RUNTIME_9060 __iomem *ctl_addr; + + ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), + CyPCI_Zctl); + if (addr0 == NULL) { + dev_err(&pdev->dev, "can't remap ctl region\n"); + goto err_reg; + } + + /* Disable interrupts on the PLX before resetting it */ + cy_writew(&ctl_addr->intr_ctrl_stat, + readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); + + plx_init(pdev, irq, addr0); + + mailbox = readl(&ctl_addr->mail_box_0); + + addr2 = ioremap_nocache(pci_resource_start(pdev, 2), + mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); + if (addr2 == NULL) { + dev_err(&pdev->dev, "can't remap base region\n"); + goto err_unmap; + } + + if (mailbox == ZE_V1) { + card_name = "Cyclades-Ze"; + } else { + card_name = "Cyclades-8Zo"; +#ifdef CY_PCI_DEBUG + if (mailbox == ZO_V1) { + cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); + dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " + "id %lx, ver %lx\n", (ulong)(0xff & + readl(&((struct CUSTOM_REG *)addr2)-> + fpga_id)), (ulong)(0xff & + readl(&((struct CUSTOM_REG *)addr2)-> + fpga_version))); + cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); + } else { + dev_info(&pdev->dev, "Cyclades-Z/PCI: New " + "Cyclades-Z board. FPGA not loaded\n"); + } +#endif + /* The following clears the firmware id word. This + ensures that the driver will not attempt to talk to + the board until it has been properly initialized. + */ + if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) + cy_writel(addr2 + ID_ADDRESS, 0L); + } + + retval = cyz_load_fw(pdev, addr2, addr0, irq); + if (retval <= 0) + goto err_unmap; + nchan = retval; + } + + if ((cy_next_channel + nchan) > NR_PORTS) { + dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " + "channels are available. Change NR_PORTS in " + "cyclades.c and recompile kernel.\n"); + goto err_unmap; + } + /* fill the next cy_card structure available */ + for (card_no = 0; card_no < NR_CARDS; card_no++) { + if (cy_card[card_no].base_addr == NULL) + break; + } + if (card_no == NR_CARDS) { /* no more cy_cards available */ + dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " + "more cards can be used. Change NR_CARDS in " + "cyclades.c and recompile kernel.\n"); + goto err_unmap; + } + + if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || + device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { + /* allocate IRQ */ + retval = request_irq(irq, cyy_interrupt, + IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); + if (retval) { + dev_err(&pdev->dev, "could not allocate IRQ\n"); + goto err_unmap; + } + cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; + } else { + struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; + struct ZFW_CTRL __iomem *zfw_ctrl; + + zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); + + cy_card[card_no].hw_ver = mailbox; + cy_card[card_no].num_chips = (unsigned int)-1; + cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; +#ifdef CONFIG_CYZ_INTR + /* allocate IRQ only if board has an IRQ */ + if (irq != 0 && irq != 255) { + retval = request_irq(irq, cyz_interrupt, + IRQF_SHARED, "Cyclades-Z", + &cy_card[card_no]); + if (retval) { + dev_err(&pdev->dev, "could not allocate IRQ\n"); + goto err_unmap; + } + } +#endif /* CONFIG_CYZ_INTR */ + } + + /* set cy_card */ + cy_card[card_no].base_addr = addr2; + cy_card[card_no].ctl_addr.p9050 = addr0; + cy_card[card_no].irq = irq; + cy_card[card_no].bus_index = 1; + cy_card[card_no].first_line = cy_next_channel; + cy_card[card_no].nports = nchan; + retval = cy_init_card(&cy_card[card_no]); + if (retval) + goto err_null; + + pci_set_drvdata(pdev, &cy_card[card_no]); + + if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || + device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { + /* enable interrupts in the PCI interface */ + plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; + switch (plx_ver) { + case PLX_9050: + cy_writeb(addr0 + 0x4c, 0x43); + break; + + case PLX_9060: + case PLX_9080: + default: /* Old boards, use PLX_9060 */ + { + struct RUNTIME_9060 __iomem *ctl_addr = addr0; + plx_init(pdev, irq, ctl_addr); + cy_writew(&ctl_addr->intr_ctrl_stat, + readw(&ctl_addr->intr_ctrl_stat) | 0x0900); + break; + } + } + } + + dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " + "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); + for (i = cy_next_channel; i < cy_next_channel + nchan; i++) + tty_register_device(cy_serial_driver, i, &pdev->dev); + cy_next_channel += nchan; + + return 0; +err_null: + cy_card[card_no].base_addr = NULL; + free_irq(irq, &cy_card[card_no]); +err_unmap: + iounmap(addr0); + if (addr2) + iounmap(addr2); +err_reg: + pci_release_regions(pdev); +err_dis: + pci_disable_device(pdev); +err: + return retval; +} + +static void __devexit cy_pci_remove(struct pci_dev *pdev) +{ + struct cyclades_card *cinfo = pci_get_drvdata(pdev); + unsigned int i; + + /* non-Z with old PLX */ + if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == + PLX_9050) + cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); + else +#ifndef CONFIG_CYZ_INTR + if (!cy_is_Z(cinfo)) +#endif + cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, + readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & + ~0x0900); + + iounmap(cinfo->base_addr); + if (cinfo->ctl_addr.p9050) + iounmap(cinfo->ctl_addr.p9050); + if (cinfo->irq +#ifndef CONFIG_CYZ_INTR + && !cy_is_Z(cinfo) +#endif /* CONFIG_CYZ_INTR */ + ) + free_irq(cinfo->irq, cinfo); + pci_release_regions(pdev); + + cinfo->base_addr = NULL; + for (i = cinfo->first_line; i < cinfo->first_line + + cinfo->nports; i++) + tty_unregister_device(cy_serial_driver, i); + cinfo->nports = 0; + kfree(cinfo->ports); +} + +static struct pci_driver cy_pci_driver = { + .name = "cyclades", + .id_table = cy_pci_dev_id, + .probe = cy_pci_probe, + .remove = __devexit_p(cy_pci_remove) +}; +#endif + +static int cyclades_proc_show(struct seq_file *m, void *v) +{ + struct cyclades_port *info; + unsigned int i, j; + __u32 cur_jifs = jiffies; + + seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " + "IdleIn Overruns Ldisc\n"); + + /* Output one line for each known port */ + for (i = 0; i < NR_CARDS; i++) + for (j = 0; j < cy_card[i].nports; j++) { + info = &cy_card[i].ports[j]; + + if (info->port.count) { + /* XXX is the ldisc num worth this? */ + struct tty_struct *tty; + struct tty_ldisc *ld; + int num = 0; + tty = tty_port_tty_get(&info->port); + if (tty) { + ld = tty_ldisc_ref(tty); + if (ld) { + num = ld->ops->num; + tty_ldisc_deref(ld); + } + tty_kref_put(tty); + } + seq_printf(m, "%3d %8lu %10lu %8lu " + "%10lu %8lu %9lu %6d\n", info->line, + (cur_jifs - info->idle_stats.in_use) / + HZ, info->idle_stats.xmit_bytes, + (cur_jifs - info->idle_stats.xmit_idle)/ + HZ, info->idle_stats.recv_bytes, + (cur_jifs - info->idle_stats.recv_idle)/ + HZ, info->idle_stats.overruns, + num); + } else + seq_printf(m, "%3d %8lu %10lu %8lu " + "%10lu %8lu %9lu %6ld\n", + info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); + } + return 0; +} + +static int cyclades_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, cyclades_proc_show, NULL); +} + +static const struct file_operations cyclades_proc_fops = { + .owner = THIS_MODULE, + .open = cyclades_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* The serial driver boot-time initialization code! + Hardware I/O ports are mapped to character special devices on a + first found, first allocated manner. That is, this code searches + for Cyclom cards in the system. As each is found, it is probed + to discover how many chips (and thus how many ports) are present. + These ports are mapped to the tty ports 32 and upward in monotonic + fashion. If an 8-port card is replaced with a 16-port card, the + port mapping on a following card will shift. + + This approach is different from what is used in the other serial + device driver because the Cyclom is more properly a multiplexer, + not just an aggregation of serial ports on one card. + + If there are more cards with more ports than have been + statically allocated above, a warning is printed and the + extra ports are ignored. + */ + +static const struct tty_operations cy_ops = { + .open = cy_open, + .close = cy_close, + .write = cy_write, + .put_char = cy_put_char, + .flush_chars = cy_flush_chars, + .write_room = cy_write_room, + .chars_in_buffer = cy_chars_in_buffer, + .flush_buffer = cy_flush_buffer, + .ioctl = cy_ioctl, + .throttle = cy_throttle, + .unthrottle = cy_unthrottle, + .set_termios = cy_set_termios, + .stop = cy_stop, + .start = cy_start, + .hangup = cy_hangup, + .break_ctl = cy_break, + .wait_until_sent = cy_wait_until_sent, + .tiocmget = cy_tiocmget, + .tiocmset = cy_tiocmset, + .get_icount = cy_get_icount, + .proc_fops = &cyclades_proc_fops, +}; + +static int __init cy_init(void) +{ + unsigned int nboards; + int retval = -ENOMEM; + + cy_serial_driver = alloc_tty_driver(NR_PORTS); + if (!cy_serial_driver) + goto err; + + printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", + __DATE__, __TIME__); + + /* Initialize the tty_driver structure */ + + cy_serial_driver->owner = THIS_MODULE; + cy_serial_driver->driver_name = "cyclades"; + cy_serial_driver->name = "ttyC"; + cy_serial_driver->major = CYCLADES_MAJOR; + cy_serial_driver->minor_start = 0; + cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; + cy_serial_driver->init_termios = tty_std_termios; + cy_serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + tty_set_operations(cy_serial_driver, &cy_ops); + + retval = tty_register_driver(cy_serial_driver); + if (retval) { + printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); + goto err_frtty; + } + + /* the code below is responsible to find the boards. Each different + type of board has its own detection routine. If a board is found, + the next cy_card structure available is set by the detection + routine. These functions are responsible for checking the + availability of cy_card and cy_port data structures and updating + the cy_next_channel. */ + + /* look for isa boards */ + nboards = cy_detect_isa(); + +#ifdef CONFIG_PCI + /* look for pci boards */ + retval = pci_register_driver(&cy_pci_driver); + if (retval && !nboards) { + tty_unregister_driver(cy_serial_driver); + goto err_frtty; + } +#endif + + return 0; +err_frtty: + put_tty_driver(cy_serial_driver); +err: + return retval; +} /* cy_init */ + +static void __exit cy_cleanup_module(void) +{ + struct cyclades_card *card; + unsigned int i, e1; + +#ifndef CONFIG_CYZ_INTR + del_timer_sync(&cyz_timerlist); +#endif /* CONFIG_CYZ_INTR */ + + e1 = tty_unregister_driver(cy_serial_driver); + if (e1) + printk(KERN_ERR "failed to unregister Cyclades serial " + "driver(%d)\n", e1); + +#ifdef CONFIG_PCI + pci_unregister_driver(&cy_pci_driver); +#endif + + for (i = 0; i < NR_CARDS; i++) { + card = &cy_card[i]; + if (card->base_addr) { + /* clear interrupt */ + cy_writeb(card->base_addr + Cy_ClrIntr, 0); + iounmap(card->base_addr); + if (card->ctl_addr.p9050) + iounmap(card->ctl_addr.p9050); + if (card->irq +#ifndef CONFIG_CYZ_INTR + && !cy_is_Z(card) +#endif /* CONFIG_CYZ_INTR */ + ) + free_irq(card->irq, card); + for (e1 = card->first_line; e1 < card->first_line + + card->nports; e1++) + tty_unregister_device(cy_serial_driver, e1); + kfree(card->ports); + } + } + + put_tty_driver(cy_serial_driver); +} /* cy_cleanup_module */ + +module_init(cy_init); +module_exit(cy_cleanup_module); + +MODULE_LICENSE("GPL"); +MODULE_VERSION(CY_VERSION); +MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); +MODULE_FIRMWARE("cyzfirm.bin"); diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c new file mode 100644 index 000000000000..db1cf9c328d8 --- /dev/null +++ b/drivers/tty/isicom.c @@ -0,0 +1,1736 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Original driver code supplied by Multi-Tech + * + * Changes + * 1/9/98 alan@lxorguk.ukuu.org.uk + * Merge to 2.0.x kernel tree + * Obtain and use official major/minors + * Loader switched to a misc device + * (fixed range check bug as a side effect) + * Printk clean up + * 9/12/98 alan@lxorguk.ukuu.org.uk + * Rough port to 2.1.x + * + * 10/6/99 sameer Merged the ISA and PCI drivers to + * a new unified driver. + * + * 3/9/99 sameer Added support for ISI4616 cards. + * + * 16/9/99 sameer We do not force RTS low anymore. + * This is to prevent the firmware + * from getting confused. + * + * 26/10/99 sameer Cosmetic changes:The driver now + * dumps the Port Count information + * along with I/O address and IRQ. + * + * 13/12/99 sameer Fixed the problem with IRQ sharing. + * + * 10/5/00 sameer Fixed isicom_shutdown_board() + * to not lower DTR on all the ports + * when the last port on the card is + * closed. + * + * 10/5/00 sameer Signal mask setup command added + * to isicom_setup_port and + * isicom_shutdown_port. + * + * 24/5/00 sameer The driver is now SMP aware. + * + * + * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem + * + * + * 03/01/01 anil .s Added support for resetting the + * internal modems on ISI cards. + * + * 08/02/01 anil .s Upgraded the driver for kernel + * 2.4.x + * + * 11/04/01 Kevin Fixed firmware load problem with + * ISIHP-4X card + * + * 30/04/01 anil .s Fixed the remote login through + * ISI port problem. Now the link + * does not go down before password + * prompt. + * + * 03/05/01 anil .s Fixed the problem with IRQ sharing + * among ISI-PCI cards. + * + * 03/05/01 anil .s Added support to display the version + * info during insmod as well as module + * listing by lsmod. + * + * 10/05/01 anil .s Done the modifications to the source + * file and Install script so that the + * same installation can be used for + * 2.2.x and 2.4.x kernel. + * + * 06/06/01 anil .s Now we drop both dtr and rts during + * shutdown_port as well as raise them + * during isicom_config_port. + * + * 09/06/01 acme@conectiva.com.br use capable, not suser, do + * restore_flags on failure in + * isicom_send_break, verify put_user + * result + * + * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps + * Baud index extended to 21 + * + * 20/03/03 ranjeeth Made to work for Linux Advanced server. + * Taken care of license warning. + * + * 10/12/03 Ravindra Made to work for Fedora Core 1 of + * Red Hat Distribution + * + * 06/01/05 Alan Cox Merged the ISI and base kernel strands + * into a single 2.6 driver + * + * *********************************************************** + * + * To use this driver you also need the support package. You + * can find this in RPM format on + * ftp://ftp.linux.org.uk/pub/linux/alan + * + * You can find the original tools for this direct from Multitech + * ftp://ftp.multitech.com/ISI-Cards/ + * + * Having installed the cards the module options (/etc/modprobe.conf) + * + * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 + * + * Omit those entries for boards you don't have installed. + * + * TODO + * Merge testing + * 64-bit verification + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +#include + +#define InterruptTheCard(base) outw(0, (base) + 0xc) +#define ClearInterrupt(base) inw((base) + 0x0a) + +#ifdef DEBUG +#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) +#else +#define isicom_paranoia_check(a, b, c) 0 +#endif + +static int isicom_probe(struct pci_dev *, const struct pci_device_id *); +static void __devexit isicom_remove(struct pci_dev *); + +static struct pci_device_id isicom_pci_tbl[] = { + { PCI_DEVICE(VENDOR_ID, 0x2028) }, + { PCI_DEVICE(VENDOR_ID, 0x2051) }, + { PCI_DEVICE(VENDOR_ID, 0x2052) }, + { PCI_DEVICE(VENDOR_ID, 0x2053) }, + { PCI_DEVICE(VENDOR_ID, 0x2054) }, + { PCI_DEVICE(VENDOR_ID, 0x2055) }, + { PCI_DEVICE(VENDOR_ID, 0x2056) }, + { PCI_DEVICE(VENDOR_ID, 0x2057) }, + { PCI_DEVICE(VENDOR_ID, 0x2058) }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); + +static struct pci_driver isicom_driver = { + .name = "isicom", + .id_table = isicom_pci_tbl, + .probe = isicom_probe, + .remove = __devexit_p(isicom_remove) +}; + +static int prev_card = 3; /* start servicing isi_card[0] */ +static struct tty_driver *isicom_normal; + +static void isicom_tx(unsigned long _data); +static void isicom_start(struct tty_struct *tty); + +static DEFINE_TIMER(tx, isicom_tx, 0, 0); + +/* baud index mappings from linux defns to isi */ + +static signed char linuxb_to_isib[] = { + -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21 +}; + +struct isi_board { + unsigned long base; + int irq; + unsigned char port_count; + unsigned short status; + unsigned short port_status; /* each bit for each port */ + unsigned short shift_count; + struct isi_port *ports; + signed char count; + spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ + unsigned long flags; + unsigned int index; +}; + +struct isi_port { + unsigned short magic; + struct tty_port port; + u16 channel; + u16 status; + struct isi_board *card; + unsigned char *xmit_buf; + int xmit_head; + int xmit_tail; + int xmit_cnt; +}; + +static struct isi_board isi_card[BOARD_COUNT]; +static struct isi_port isi_ports[PORT_COUNT]; + +/* + * Locking functions for card level locking. We need to own both + * the kernel lock for the card and have the card in a position that + * it wants to talk. + */ + +static inline int WaitTillCardIsFree(unsigned long base) +{ + unsigned int count = 0; + unsigned int a = in_atomic(); /* do we run under spinlock? */ + + while (!(inw(base + 0xe) & 0x1) && count++ < 100) + if (a) + mdelay(1); + else + msleep(1); + + return !(inw(base + 0xe) & 0x1); +} + +static int lock_card(struct isi_board *card) +{ + unsigned long base = card->base; + unsigned int retries, a; + + for (retries = 0; retries < 10; retries++) { + spin_lock_irqsave(&card->card_lock, card->flags); + for (a = 0; a < 10; a++) { + if (inw(base + 0xe) & 0x1) + return 1; + udelay(10); + } + spin_unlock_irqrestore(&card->card_lock, card->flags); + msleep(10); + } + pr_warning("Failed to lock Card (0x%lx)\n", card->base); + + return 0; /* Failed to acquire the card! */ +} + +static void unlock_card(struct isi_board *card) +{ + spin_unlock_irqrestore(&card->card_lock, card->flags); +} + +/* + * ISI Card specific ops ... + */ + +/* card->lock HAS to be held */ +static void raise_dtr(struct isi_port *port) +{ + struct isi_board *card = port->card; + unsigned long base = card->base; + u16 channel = port->channel; + + if (WaitTillCardIsFree(base)) + return; + + outw(0x8000 | (channel << card->shift_count) | 0x02, base); + outw(0x0504, base); + InterruptTheCard(base); + port->status |= ISI_DTR; +} + +/* card->lock HAS to be held */ +static inline void drop_dtr(struct isi_port *port) +{ + struct isi_board *card = port->card; + unsigned long base = card->base; + u16 channel = port->channel; + + if (WaitTillCardIsFree(base)) + return; + + outw(0x8000 | (channel << card->shift_count) | 0x02, base); + outw(0x0404, base); + InterruptTheCard(base); + port->status &= ~ISI_DTR; +} + +/* card->lock HAS to be held */ +static inline void raise_rts(struct isi_port *port) +{ + struct isi_board *card = port->card; + unsigned long base = card->base; + u16 channel = port->channel; + + if (WaitTillCardIsFree(base)) + return; + + outw(0x8000 | (channel << card->shift_count) | 0x02, base); + outw(0x0a04, base); + InterruptTheCard(base); + port->status |= ISI_RTS; +} + +/* card->lock HAS to be held */ +static inline void drop_rts(struct isi_port *port) +{ + struct isi_board *card = port->card; + unsigned long base = card->base; + u16 channel = port->channel; + + if (WaitTillCardIsFree(base)) + return; + + outw(0x8000 | (channel << card->shift_count) | 0x02, base); + outw(0x0804, base); + InterruptTheCard(base); + port->status &= ~ISI_RTS; +} + +/* card->lock MUST NOT be held */ + +static void isicom_dtr_rts(struct tty_port *port, int on) +{ + struct isi_port *ip = container_of(port, struct isi_port, port); + struct isi_board *card = ip->card; + unsigned long base = card->base; + u16 channel = ip->channel; + + if (!lock_card(card)) + return; + + if (on) { + outw(0x8000 | (channel << card->shift_count) | 0x02, base); + outw(0x0f04, base); + InterruptTheCard(base); + ip->status |= (ISI_DTR | ISI_RTS); + } else { + outw(0x8000 | (channel << card->shift_count) | 0x02, base); + outw(0x0C04, base); + InterruptTheCard(base); + ip->status &= ~(ISI_DTR | ISI_RTS); + } + unlock_card(card); +} + +/* card->lock HAS to be held */ +static void drop_dtr_rts(struct isi_port *port) +{ + struct isi_board *card = port->card; + unsigned long base = card->base; + u16 channel = port->channel; + + if (WaitTillCardIsFree(base)) + return; + + outw(0x8000 | (channel << card->shift_count) | 0x02, base); + outw(0x0c04, base); + InterruptTheCard(base); + port->status &= ~(ISI_RTS | ISI_DTR); +} + +/* + * ISICOM Driver specific routines ... + * + */ + +static inline int __isicom_paranoia_check(struct isi_port const *port, + char *name, const char *routine) +{ + if (!port) { + pr_warning("Warning: bad isicom magic for dev %s in %s.\n", + name, routine); + return 1; + } + if (port->magic != ISICOM_MAGIC) { + pr_warning("Warning: NULL isicom port for dev %s in %s.\n", + name, routine); + return 1; + } + + return 0; +} + +/* + * Transmitter. + * + * We shovel data into the card buffers on a regular basis. The card + * will do the rest of the work for us. + */ + +static void isicom_tx(unsigned long _data) +{ + unsigned long flags, base; + unsigned int retries; + short count = (BOARD_COUNT-1), card; + short txcount, wrd, residue, word_count, cnt; + struct isi_port *port; + struct tty_struct *tty; + + /* find next active board */ + card = (prev_card + 1) & 0x0003; + while (count-- > 0) { + if (isi_card[card].status & BOARD_ACTIVE) + break; + card = (card + 1) & 0x0003; + } + if (!(isi_card[card].status & BOARD_ACTIVE)) + goto sched_again; + + prev_card = card; + + count = isi_card[card].port_count; + port = isi_card[card].ports; + base = isi_card[card].base; + + spin_lock_irqsave(&isi_card[card].card_lock, flags); + for (retries = 0; retries < 100; retries++) { + if (inw(base + 0xe) & 0x1) + break; + udelay(2); + } + if (retries >= 100) + goto unlock; + + tty = tty_port_tty_get(&port->port); + if (tty == NULL) + goto put_unlock; + + for (; count > 0; count--, port++) { + /* port not active or tx disabled to force flow control */ + if (!(port->port.flags & ASYNC_INITIALIZED) || + !(port->status & ISI_TXOK)) + continue; + + txcount = min_t(short, TX_SIZE, port->xmit_cnt); + if (txcount <= 0 || tty->stopped || tty->hw_stopped) + continue; + + if (!(inw(base + 0x02) & (1 << port->channel))) + continue; + + pr_debug("txing %d bytes, port%d.\n", + txcount, port->channel + 1); + outw((port->channel << isi_card[card].shift_count) | txcount, + base); + residue = NO; + wrd = 0; + while (1) { + cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE + - port->xmit_tail)); + if (residue == YES) { + residue = NO; + if (cnt > 0) { + wrd |= (port->port.xmit_buf[port->xmit_tail] + << 8); + port->xmit_tail = (port->xmit_tail + 1) + & (SERIAL_XMIT_SIZE - 1); + port->xmit_cnt--; + txcount--; + cnt--; + outw(wrd, base); + } else { + outw(wrd, base); + break; + } + } + if (cnt <= 0) + break; + word_count = cnt >> 1; + outsw(base, port->port.xmit_buf+port->xmit_tail, word_count); + port->xmit_tail = (port->xmit_tail + + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); + txcount -= (word_count << 1); + port->xmit_cnt -= (word_count << 1); + if (cnt & 0x0001) { + residue = YES; + wrd = port->port.xmit_buf[port->xmit_tail]; + port->xmit_tail = (port->xmit_tail + 1) + & (SERIAL_XMIT_SIZE - 1); + port->xmit_cnt--; + txcount--; + } + } + + InterruptTheCard(base); + if (port->xmit_cnt <= 0) + port->status &= ~ISI_TXOK; + if (port->xmit_cnt <= WAKEUP_CHARS) + tty_wakeup(tty); + } + +put_unlock: + tty_kref_put(tty); +unlock: + spin_unlock_irqrestore(&isi_card[card].card_lock, flags); + /* schedule another tx for hopefully in about 10ms */ +sched_again: + mod_timer(&tx, jiffies + msecs_to_jiffies(10)); +} + +/* + * Main interrupt handler routine + */ + +static irqreturn_t isicom_interrupt(int irq, void *dev_id) +{ + struct isi_board *card = dev_id; + struct isi_port *port; + struct tty_struct *tty; + unsigned long base; + u16 header, word_count, count, channel; + short byte_count; + unsigned char *rp; + + if (!card || !(card->status & FIRMWARE_LOADED)) + return IRQ_NONE; + + base = card->base; + + /* did the card interrupt us? */ + if (!(inw(base + 0x0e) & 0x02)) + return IRQ_NONE; + + spin_lock(&card->card_lock); + + /* + * disable any interrupts from the PCI card and lower the + * interrupt line + */ + outw(0x8000, base+0x04); + ClearInterrupt(base); + + inw(base); /* get the dummy word out */ + header = inw(base); + channel = (header & 0x7800) >> card->shift_count; + byte_count = header & 0xff; + + if (channel + 1 > card->port_count) { + pr_warning("%s(0x%lx): %d(channel) > port_count.\n", + __func__, base, channel+1); + outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); + return IRQ_HANDLED; + } + port = card->ports + channel; + if (!(port->port.flags & ASYNC_INITIALIZED)) { + outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); + return IRQ_HANDLED; + } + + tty = tty_port_tty_get(&port->port); + if (tty == NULL) { + word_count = byte_count >> 1; + while (byte_count > 1) { + inw(base); + byte_count -= 2; + } + if (byte_count & 0x01) + inw(base); + outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); + return IRQ_HANDLED; + } + + if (header & 0x8000) { /* Status Packet */ + header = inw(base); + switch (header & 0xff) { + case 0: /* Change in EIA signals */ + if (port->port.flags & ASYNC_CHECK_CD) { + if (port->status & ISI_DCD) { + if (!(header & ISI_DCD)) { + /* Carrier has been lost */ + pr_debug("%s: DCD->low.\n", + __func__); + port->status &= ~ISI_DCD; + tty_hangup(tty); + } + } else if (header & ISI_DCD) { + /* Carrier has been detected */ + pr_debug("%s: DCD->high.\n", + __func__); + port->status |= ISI_DCD; + wake_up_interruptible(&port->port.open_wait); + } + } else { + if (header & ISI_DCD) + port->status |= ISI_DCD; + else + port->status &= ~ISI_DCD; + } + + if (port->port.flags & ASYNC_CTS_FLOW) { + if (tty->hw_stopped) { + if (header & ISI_CTS) { + port->port.tty->hw_stopped = 0; + /* start tx ing */ + port->status |= (ISI_TXOK + | ISI_CTS); + tty_wakeup(tty); + } + } else if (!(header & ISI_CTS)) { + tty->hw_stopped = 1; + /* stop tx ing */ + port->status &= ~(ISI_TXOK | ISI_CTS); + } + } else { + if (header & ISI_CTS) + port->status |= ISI_CTS; + else + port->status &= ~ISI_CTS; + } + + if (header & ISI_DSR) + port->status |= ISI_DSR; + else + port->status &= ~ISI_DSR; + + if (header & ISI_RI) + port->status |= ISI_RI; + else + port->status &= ~ISI_RI; + + break; + + case 1: /* Received Break !!! */ + tty_insert_flip_char(tty, 0, TTY_BREAK); + if (port->port.flags & ASYNC_SAK) + do_SAK(tty); + tty_flip_buffer_push(tty); + break; + + case 2: /* Statistics */ + pr_debug("%s: stats!!!\n", __func__); + break; + + default: + pr_debug("%s: Unknown code in status packet.\n", + __func__); + break; + } + } else { /* Data Packet */ + + count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); + pr_debug("%s: Can rx %d of %d bytes.\n", + __func__, count, byte_count); + word_count = count >> 1; + insw(base, rp, word_count); + byte_count -= (word_count << 1); + if (count & 0x0001) { + tty_insert_flip_char(tty, inw(base) & 0xff, + TTY_NORMAL); + byte_count -= 2; + } + if (byte_count > 0) { + pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n", + __func__, base, channel + 1); + /* drain out unread xtra data */ + while (byte_count > 0) { + inw(base); + byte_count -= 2; + } + } + tty_flip_buffer_push(tty); + } + outw(0x0000, base+0x04); /* enable interrupts */ + spin_unlock(&card->card_lock); + tty_kref_put(tty); + + return IRQ_HANDLED; +} + +static void isicom_config_port(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + unsigned long baud; + unsigned long base = card->base; + u16 channel_setup, channel = port->channel, + shift_count = card->shift_count; + unsigned char flow_ctrl; + + /* FIXME: Switch to new tty baud API */ + baud = C_BAUD(tty); + if (baud & CBAUDEX) { + baud &= ~CBAUDEX; + + /* if CBAUDEX bit is on and the baud is set to either 50 or 75 + * then the card is programmed for 57.6Kbps or 115Kbps + * respectively. + */ + + /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */ + if (baud < 1 || baud > 4) + tty->termios->c_cflag &= ~CBAUDEX; + else + baud += 15; + } + if (baud == 15) { + + /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set + * by the set_serial_info ioctl ... this is done by + * the 'setserial' utility. + */ + + if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + baud++; /* 57.6 Kbps */ + if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + baud += 2; /* 115 Kbps */ + if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + baud += 3; /* 230 kbps*/ + if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + baud += 4; /* 460 kbps*/ + } + if (linuxb_to_isib[baud] == -1) { + /* hang up */ + drop_dtr(port); + return; + } else + raise_dtr(port); + + if (WaitTillCardIsFree(base) == 0) { + outw(0x8000 | (channel << shift_count) | 0x03, base); + outw(linuxb_to_isib[baud] << 8 | 0x03, base); + channel_setup = 0; + switch (C_CSIZE(tty)) { + case CS5: + channel_setup |= ISICOM_CS5; + break; + case CS6: + channel_setup |= ISICOM_CS6; + break; + case CS7: + channel_setup |= ISICOM_CS7; + break; + case CS8: + channel_setup |= ISICOM_CS8; + break; + } + + if (C_CSTOPB(tty)) + channel_setup |= ISICOM_2SB; + if (C_PARENB(tty)) { + channel_setup |= ISICOM_EVPAR; + if (C_PARODD(tty)) + channel_setup |= ISICOM_ODPAR; + } + outw(channel_setup, base); + InterruptTheCard(base); + } + if (C_CLOCAL(tty)) + port->port.flags &= ~ASYNC_CHECK_CD; + else + port->port.flags |= ASYNC_CHECK_CD; + + /* flow control settings ...*/ + flow_ctrl = 0; + port->port.flags &= ~ASYNC_CTS_FLOW; + if (C_CRTSCTS(tty)) { + port->port.flags |= ASYNC_CTS_FLOW; + flow_ctrl |= ISICOM_CTSRTS; + } + if (I_IXON(tty)) + flow_ctrl |= ISICOM_RESPOND_XONXOFF; + if (I_IXOFF(tty)) + flow_ctrl |= ISICOM_INITIATE_XONXOFF; + + if (WaitTillCardIsFree(base) == 0) { + outw(0x8000 | (channel << shift_count) | 0x04, base); + outw(flow_ctrl << 8 | 0x05, base); + outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); + InterruptTheCard(base); + } + + /* rx enabled -> enable port for rx on the card */ + if (C_CREAD(tty)) { + card->port_status |= (1 << channel); + outw(card->port_status, base + 0x02); + } +} + +/* open et all */ + +static inline void isicom_setup_board(struct isi_board *bp) +{ + int channel; + struct isi_port *port; + + bp->count++; + if (!(bp->status & BOARD_INIT)) { + port = bp->ports; + for (channel = 0; channel < bp->port_count; channel++, port++) + drop_dtr_rts(port); + } + bp->status |= BOARD_ACTIVE | BOARD_INIT; +} + +/* Activate and thus setup board are protected from races against shutdown + by the tty_port mutex */ + +static int isicom_activate(struct tty_port *tport, struct tty_struct *tty) +{ + struct isi_port *port = container_of(tport, struct isi_port, port); + struct isi_board *card = port->card; + unsigned long flags; + + if (tty_port_alloc_xmit_buf(tport) < 0) + return -ENOMEM; + + spin_lock_irqsave(&card->card_lock, flags); + isicom_setup_board(card); + + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + + /* discard any residual data */ + if (WaitTillCardIsFree(card->base) == 0) { + outw(0x8000 | (port->channel << card->shift_count) | 0x02, + card->base); + outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base); + InterruptTheCard(card->base); + } + isicom_config_port(tty); + spin_unlock_irqrestore(&card->card_lock, flags); + + return 0; +} + +static int isicom_carrier_raised(struct tty_port *port) +{ + struct isi_port *ip = container_of(port, struct isi_port, port); + return (ip->status & ISI_DCD)?1 : 0; +} + +static struct tty_port *isicom_find_port(struct tty_struct *tty) +{ + struct isi_port *port; + struct isi_board *card; + unsigned int board; + int line = tty->index; + + if (line < 0 || line > PORT_COUNT-1) + return NULL; + board = BOARD(line); + card = &isi_card[board]; + + if (!(card->status & FIRMWARE_LOADED)) + return NULL; + + /* open on a port greater than the port count for the card !!! */ + if (line > ((board * 16) + card->port_count - 1)) + return NULL; + + port = &isi_ports[line]; + if (isicom_paranoia_check(port, tty->name, "isicom_open")) + return NULL; + + return &port->port; +} + +static int isicom_open(struct tty_struct *tty, struct file *filp) +{ + struct isi_port *port; + struct tty_port *tport; + + tport = isicom_find_port(tty); + if (tport == NULL) + return -ENODEV; + port = container_of(tport, struct isi_port, port); + + tty->driver_data = port; + return tty_port_open(tport, tty, filp); +} + +/* close et all */ + +/* card->lock HAS to be held */ +static void isicom_shutdown_port(struct isi_port *port) +{ + struct isi_board *card = port->card; + + if (--card->count < 0) { + pr_debug("%s: bad board(0x%lx) count %d.\n", + __func__, card->base, card->count); + card->count = 0; + } + /* last port was closed, shutdown that board too */ + if (!card->count) + card->status &= BOARD_ACTIVE; +} + +static void isicom_flush_buffer(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + unsigned long flags; + + if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) + return; + + spin_lock_irqsave(&card->card_lock, flags); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore(&card->card_lock, flags); + + tty_wakeup(tty); +} + +static void isicom_shutdown(struct tty_port *port) +{ + struct isi_port *ip = container_of(port, struct isi_port, port); + struct isi_board *card = ip->card; + unsigned long flags; + + /* indicate to the card that no more data can be received + on this port */ + spin_lock_irqsave(&card->card_lock, flags); + card->port_status &= ~(1 << ip->channel); + outw(card->port_status, card->base + 0x02); + isicom_shutdown_port(ip); + spin_unlock_irqrestore(&card->card_lock, flags); + tty_port_free_xmit_buf(port); +} + +static void isicom_close(struct tty_struct *tty, struct file *filp) +{ + struct isi_port *ip = tty->driver_data; + struct tty_port *port; + + if (ip == NULL) + return; + + port = &ip->port; + if (isicom_paranoia_check(ip, tty->name, "isicom_close")) + return; + tty_port_close(port, tty, filp); +} + +/* write et all */ +static int isicom_write(struct tty_struct *tty, const unsigned char *buf, + int count) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + unsigned long flags; + int cnt, total = 0; + + if (isicom_paranoia_check(port, tty->name, "isicom_write")) + return 0; + + spin_lock_irqsave(&card->card_lock, flags); + + while (1) { + cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt + - 1, SERIAL_XMIT_SIZE - port->xmit_head)); + if (cnt <= 0) + break; + + memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt); + port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE + - 1); + port->xmit_cnt += cnt; + buf += cnt; + count -= cnt; + total += cnt; + } + if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) + port->status |= ISI_TXOK; + spin_unlock_irqrestore(&card->card_lock, flags); + return total; +} + +/* put_char et all */ +static int isicom_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + unsigned long flags; + + if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) + return 0; + + spin_lock_irqsave(&card->card_lock, flags); + if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { + spin_unlock_irqrestore(&card->card_lock, flags); + return 0; + } + + port->port.xmit_buf[port->xmit_head++] = ch; + port->xmit_head &= (SERIAL_XMIT_SIZE - 1); + port->xmit_cnt++; + spin_unlock_irqrestore(&card->card_lock, flags); + return 1; +} + +/* flush_chars et all */ +static void isicom_flush_chars(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + + if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) + return; + + if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || + !port->port.xmit_buf) + return; + + /* this tells the transmitter to consider this port for + data output to the card ... that's the best we can do. */ + port->status |= ISI_TXOK; +} + +/* write_room et all */ +static int isicom_write_room(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + int free; + + if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) + return 0; + + free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; + if (free < 0) + free = 0; + return free; +} + +/* chars_in_buffer et all */ +static int isicom_chars_in_buffer(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) + return 0; + return port->xmit_cnt; +} + +/* ioctl et all */ +static int isicom_send_break(struct tty_struct *tty, int length) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + unsigned long base = card->base; + + if (length == -1) + return -EOPNOTSUPP; + + if (!lock_card(card)) + return -EINVAL; + + outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); + outw((length & 0xff) << 8 | 0x00, base); + outw((length & 0xff00), base); + InterruptTheCard(base); + + unlock_card(card); + return 0; +} + +static int isicom_tiocmget(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + /* just send the port status */ + u16 status = port->status; + + if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) + return -ENODEV; + + return ((status & ISI_RTS) ? TIOCM_RTS : 0) | + ((status & ISI_DTR) ? TIOCM_DTR : 0) | + ((status & ISI_DCD) ? TIOCM_CAR : 0) | + ((status & ISI_DSR) ? TIOCM_DSR : 0) | + ((status & ISI_CTS) ? TIOCM_CTS : 0) | + ((status & ISI_RI ) ? TIOCM_RI : 0); +} + +static int isicom_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct isi_port *port = tty->driver_data; + unsigned long flags; + + if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) + return -ENODEV; + + spin_lock_irqsave(&port->card->card_lock, flags); + if (set & TIOCM_RTS) + raise_rts(port); + if (set & TIOCM_DTR) + raise_dtr(port); + + if (clear & TIOCM_RTS) + drop_rts(port); + if (clear & TIOCM_DTR) + drop_dtr(port); + spin_unlock_irqrestore(&port->card->card_lock, flags); + + return 0; +} + +static int isicom_set_serial_info(struct tty_struct *tty, + struct serial_struct __user *info) +{ + struct isi_port *port = tty->driver_data; + struct serial_struct newinfo; + int reconfig_port; + + if (copy_from_user(&newinfo, info, sizeof(newinfo))) + return -EFAULT; + + mutex_lock(&port->port.mutex); + reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) != + (newinfo.flags & ASYNC_SPD_MASK)); + + if (!capable(CAP_SYS_ADMIN)) { + if ((newinfo.close_delay != port->port.close_delay) || + (newinfo.closing_wait != port->port.closing_wait) || + ((newinfo.flags & ~ASYNC_USR_MASK) != + (port->port.flags & ~ASYNC_USR_MASK))) { + mutex_unlock(&port->port.mutex); + return -EPERM; + } + port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | + (newinfo.flags & ASYNC_USR_MASK)); + } else { + port->port.close_delay = newinfo.close_delay; + port->port.closing_wait = newinfo.closing_wait; + port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | + (newinfo.flags & ASYNC_FLAGS)); + } + if (reconfig_port) { + unsigned long flags; + spin_lock_irqsave(&port->card->card_lock, flags); + isicom_config_port(tty); + spin_unlock_irqrestore(&port->card->card_lock, flags); + } + mutex_unlock(&port->port.mutex); + return 0; +} + +static int isicom_get_serial_info(struct isi_port *port, + struct serial_struct __user *info) +{ + struct serial_struct out_info; + + mutex_lock(&port->port.mutex); + memset(&out_info, 0, sizeof(out_info)); +/* out_info.type = ? */ + out_info.line = port - isi_ports; + out_info.port = port->card->base; + out_info.irq = port->card->irq; + out_info.flags = port->port.flags; +/* out_info.baud_base = ? */ + out_info.close_delay = port->port.close_delay; + out_info.closing_wait = port->port.closing_wait; + mutex_unlock(&port->port.mutex); + if (copy_to_user(info, &out_info, sizeof(out_info))) + return -EFAULT; + return 0; +} + +static int isicom_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct isi_port *port = tty->driver_data; + void __user *argp = (void __user *)arg; + + if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) + return -ENODEV; + + switch (cmd) { + case TIOCGSERIAL: + return isicom_get_serial_info(port, argp); + + case TIOCSSERIAL: + return isicom_set_serial_info(tty, argp); + + default: + return -ENOIOCTLCMD; + } + return 0; +} + +/* set_termios et all */ +static void isicom_set_termios(struct tty_struct *tty, + struct ktermios *old_termios) +{ + struct isi_port *port = tty->driver_data; + unsigned long flags; + + if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) + return; + + if (tty->termios->c_cflag == old_termios->c_cflag && + tty->termios->c_iflag == old_termios->c_iflag) + return; + + spin_lock_irqsave(&port->card->card_lock, flags); + isicom_config_port(tty); + spin_unlock_irqrestore(&port->card->card_lock, flags); + + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + isicom_start(tty); + } +} + +/* throttle et all */ +static void isicom_throttle(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + + if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) + return; + + /* tell the card that this port cannot handle any more data for now */ + card->port_status &= ~(1 << port->channel); + outw(card->port_status, card->base + 0x02); +} + +/* unthrottle et all */ +static void isicom_unthrottle(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + struct isi_board *card = port->card; + + if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) + return; + + /* tell the card that this port is ready to accept more data */ + card->port_status |= (1 << port->channel); + outw(card->port_status, card->base + 0x02); +} + +/* stop et all */ +static void isicom_stop(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + + if (isicom_paranoia_check(port, tty->name, "isicom_stop")) + return; + + /* this tells the transmitter not to consider this port for + data output to the card. */ + port->status &= ~ISI_TXOK; +} + +/* start et all */ +static void isicom_start(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + + if (isicom_paranoia_check(port, tty->name, "isicom_start")) + return; + + /* this tells the transmitter to consider this port for + data output to the card. */ + port->status |= ISI_TXOK; +} + +static void isicom_hangup(struct tty_struct *tty) +{ + struct isi_port *port = tty->driver_data; + + if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) + return; + tty_port_hangup(&port->port); +} + + +/* + * Driver init and deinit functions + */ + +static const struct tty_operations isicom_ops = { + .open = isicom_open, + .close = isicom_close, + .write = isicom_write, + .put_char = isicom_put_char, + .flush_chars = isicom_flush_chars, + .write_room = isicom_write_room, + .chars_in_buffer = isicom_chars_in_buffer, + .ioctl = isicom_ioctl, + .set_termios = isicom_set_termios, + .throttle = isicom_throttle, + .unthrottle = isicom_unthrottle, + .stop = isicom_stop, + .start = isicom_start, + .hangup = isicom_hangup, + .flush_buffer = isicom_flush_buffer, + .tiocmget = isicom_tiocmget, + .tiocmset = isicom_tiocmset, + .break_ctl = isicom_send_break, +}; + +static const struct tty_port_operations isicom_port_ops = { + .carrier_raised = isicom_carrier_raised, + .dtr_rts = isicom_dtr_rts, + .activate = isicom_activate, + .shutdown = isicom_shutdown, +}; + +static int __devinit reset_card(struct pci_dev *pdev, + const unsigned int card, unsigned int *signature) +{ + struct isi_board *board = pci_get_drvdata(pdev); + unsigned long base = board->base; + unsigned int sig, portcount = 0; + int retval = 0; + + dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, + base); + + inw(base + 0x8); + + msleep(10); + + outw(0, base + 0x8); /* Reset */ + + msleep(1000); + + sig = inw(base + 0x4) & 0xff; + + if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd && + sig != 0xee) { + dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible " + "bad I/O Port Address 0x%lx).\n", card + 1, base); + dev_dbg(&pdev->dev, "Sig=0x%x\n", sig); + retval = -EIO; + goto end; + } + + msleep(10); + + portcount = inw(base + 0x2); + if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 && + portcount != 8 && portcount != 16)) { + dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n", + card + 1); + retval = -EIO; + goto end; + } + + switch (sig) { + case 0xa5: + case 0xbb: + case 0xdd: + board->port_count = (portcount == 4) ? 4 : 8; + board->shift_count = 12; + break; + case 0xcc: + case 0xee: + board->port_count = 16; + board->shift_count = 11; + break; + } + dev_info(&pdev->dev, "-Done\n"); + *signature = sig; + +end: + return retval; +} + +static int __devinit load_firmware(struct pci_dev *pdev, + const unsigned int index, const unsigned int signature) +{ + struct isi_board *board = pci_get_drvdata(pdev); + const struct firmware *fw; + unsigned long base = board->base; + unsigned int a; + u16 word_count, status; + int retval = -EIO; + char *name; + u8 *data; + + struct stframe { + u16 addr; + u16 count; + u8 data[0]; + } *frame; + + switch (signature) { + case 0xa5: + name = "isi608.bin"; + break; + case 0xbb: + name = "isi608em.bin"; + break; + case 0xcc: + name = "isi616em.bin"; + break; + case 0xdd: + name = "isi4608.bin"; + break; + case 0xee: + name = "isi4616.bin"; + break; + default: + dev_err(&pdev->dev, "Unknown signature.\n"); + goto end; + } + + retval = request_firmware(&fw, name, &pdev->dev); + if (retval) + goto end; + + retval = -EIO; + + for (frame = (struct stframe *)fw->data; + frame < (struct stframe *)(fw->data + fw->size); + frame = (struct stframe *)((u8 *)(frame + 1) + + frame->count)) { + if (WaitTillCardIsFree(base)) + goto errrelfw; + + outw(0xf0, base); /* start upload sequence */ + outw(0x00, base); + outw(frame->addr, base); /* lsb of address */ + + word_count = frame->count / 2 + frame->count % 2; + outw(word_count, base); + InterruptTheCard(base); + + udelay(100); /* 0x2f */ + + if (WaitTillCardIsFree(base)) + goto errrelfw; + + status = inw(base + 0x4); + if (status != 0) { + dev_warn(&pdev->dev, "Card%d rejected load header:\n" + "Address:0x%x\n" + "Count:0x%x\n" + "Status:0x%x\n", + index + 1, frame->addr, frame->count, status); + goto errrelfw; + } + outsw(base, frame->data, word_count); + + InterruptTheCard(base); + + udelay(50); /* 0x0f */ + + if (WaitTillCardIsFree(base)) + goto errrelfw; + + status = inw(base + 0x4); + if (status != 0) { + dev_err(&pdev->dev, "Card%d got out of sync.Card " + "Status:0x%x\n", index + 1, status); + goto errrelfw; + } + } + +/* XXX: should we test it by reading it back and comparing with original like + * in load firmware package? */ + for (frame = (struct stframe *)fw->data; + frame < (struct stframe *)(fw->data + fw->size); + frame = (struct stframe *)((u8 *)(frame + 1) + + frame->count)) { + if (WaitTillCardIsFree(base)) + goto errrelfw; + + outw(0xf1, base); /* start download sequence */ + outw(0x00, base); + outw(frame->addr, base); /* lsb of address */ + + word_count = (frame->count >> 1) + frame->count % 2; + outw(word_count + 1, base); + InterruptTheCard(base); + + udelay(50); /* 0xf */ + + if (WaitTillCardIsFree(base)) + goto errrelfw; + + status = inw(base + 0x4); + if (status != 0) { + dev_warn(&pdev->dev, "Card%d rejected verify header:\n" + "Address:0x%x\n" + "Count:0x%x\n" + "Status: 0x%x\n", + index + 1, frame->addr, frame->count, status); + goto errrelfw; + } + + data = kmalloc(word_count * 2, GFP_KERNEL); + if (data == NULL) { + dev_err(&pdev->dev, "Card%d, firmware upload " + "failed, not enough memory\n", index + 1); + goto errrelfw; + } + inw(base); + insw(base, data, word_count); + InterruptTheCard(base); + + for (a = 0; a < frame->count; a++) + if (data[a] != frame->data[a]) { + kfree(data); + dev_err(&pdev->dev, "Card%d, firmware upload " + "failed\n", index + 1); + goto errrelfw; + } + kfree(data); + + udelay(50); /* 0xf */ + + if (WaitTillCardIsFree(base)) + goto errrelfw; + + status = inw(base + 0x4); + if (status != 0) { + dev_err(&pdev->dev, "Card%d verify got out of sync. " + "Card Status:0x%x\n", index + 1, status); + goto errrelfw; + } + } + + /* xfer ctrl */ + if (WaitTillCardIsFree(base)) + goto errrelfw; + + outw(0xf2, base); + outw(0x800, base); + outw(0x0, base); + outw(0x0, base); + InterruptTheCard(base); + outw(0x0, base + 0x4); /* for ISI4608 cards */ + + board->status |= FIRMWARE_LOADED; + retval = 0; + +errrelfw: + release_firmware(fw); +end: + return retval; +} + +/* + * Insmod can set static symbols so keep these static + */ +static unsigned int card_count; + +static int __devinit isicom_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + unsigned int uninitialized_var(signature), index; + int retval = -EPERM; + struct isi_board *board = NULL; + + if (card_count >= BOARD_COUNT) + goto err; + + retval = pci_enable_device(pdev); + if (retval) { + dev_err(&pdev->dev, "failed to enable\n"); + goto err; + } + + dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); + + /* allot the first empty slot in the array */ + for (index = 0; index < BOARD_COUNT; index++) { + if (isi_card[index].base == 0) { + board = &isi_card[index]; + break; + } + } + if (index == BOARD_COUNT) { + retval = -ENODEV; + goto err_disable; + } + + board->index = index; + board->base = pci_resource_start(pdev, 3); + board->irq = pdev->irq; + card_count++; + + pci_set_drvdata(pdev, board); + + retval = pci_request_region(pdev, 3, ISICOM_NAME); + if (retval) { + dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " + "will be disabled.\n", board->base, board->base + 15, + index + 1); + retval = -EBUSY; + goto errdec; + } + + retval = request_irq(board->irq, isicom_interrupt, + IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board); + if (retval < 0) { + dev_err(&pdev->dev, "Could not install handler at Irq %d. " + "Card%d will be disabled.\n", board->irq, index + 1); + goto errunrr; + } + + retval = reset_card(pdev, index, &signature); + if (retval < 0) + goto errunri; + + retval = load_firmware(pdev, index, signature); + if (retval < 0) + goto errunri; + + for (index = 0; index < board->port_count; index++) + tty_register_device(isicom_normal, board->index * 16 + index, + &pdev->dev); + + return 0; + +errunri: + free_irq(board->irq, board); +errunrr: + pci_release_region(pdev, 3); +errdec: + board->base = 0; + card_count--; +err_disable: + pci_disable_device(pdev); +err: + return retval; +} + +static void __devexit isicom_remove(struct pci_dev *pdev) +{ + struct isi_board *board = pci_get_drvdata(pdev); + unsigned int i; + + for (i = 0; i < board->port_count; i++) + tty_unregister_device(isicom_normal, board->index * 16 + i); + + free_irq(board->irq, board); + pci_release_region(pdev, 3); + board->base = 0; + card_count--; + pci_disable_device(pdev); +} + +static int __init isicom_init(void) +{ + int retval, idx, channel; + struct isi_port *port; + + for (idx = 0; idx < BOARD_COUNT; idx++) { + port = &isi_ports[idx * 16]; + isi_card[idx].ports = port; + spin_lock_init(&isi_card[idx].card_lock); + for (channel = 0; channel < 16; channel++, port++) { + tty_port_init(&port->port); + port->port.ops = &isicom_port_ops; + port->magic = ISICOM_MAGIC; + port->card = &isi_card[idx]; + port->channel = channel; + port->port.close_delay = 50 * HZ/100; + port->port.closing_wait = 3000 * HZ/100; + port->status = 0; + /* . . . */ + } + isi_card[idx].base = 0; + isi_card[idx].irq = 0; + } + + /* tty driver structure initialization */ + isicom_normal = alloc_tty_driver(PORT_COUNT); + if (!isicom_normal) { + retval = -ENOMEM; + goto error; + } + + isicom_normal->owner = THIS_MODULE; + isicom_normal->name = "ttyM"; + isicom_normal->major = ISICOM_NMAJOR; + isicom_normal->minor_start = 0; + isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; + isicom_normal->subtype = SERIAL_TYPE_NORMAL; + isicom_normal->init_termios = tty_std_termios; + isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | + CLOCAL; + isicom_normal->flags = TTY_DRIVER_REAL_RAW | + TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK; + tty_set_operations(isicom_normal, &isicom_ops); + + retval = tty_register_driver(isicom_normal); + if (retval) { + pr_debug("Couldn't register the dialin driver\n"); + goto err_puttty; + } + + retval = pci_register_driver(&isicom_driver); + if (retval < 0) { + pr_err("Unable to register pci driver.\n"); + goto err_unrtty; + } + + mod_timer(&tx, jiffies + 1); + + return 0; +err_unrtty: + tty_unregister_driver(isicom_normal); +err_puttty: + put_tty_driver(isicom_normal); +error: + return retval; +} + +static void __exit isicom_exit(void) +{ + del_timer_sync(&tx); + + pci_unregister_driver(&isicom_driver); + tty_unregister_driver(isicom_normal); + put_tty_driver(isicom_normal); +} + +module_init(isicom_init); +module_exit(isicom_exit); + +MODULE_AUTHOR("MultiTech"); +MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE("isi608.bin"); +MODULE_FIRMWARE("isi608em.bin"); +MODULE_FIRMWARE("isi616em.bin"); +MODULE_FIRMWARE("isi4608.bin"); +MODULE_FIRMWARE("isi4616.bin"); diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c new file mode 100644 index 000000000000..35b0c38590e6 --- /dev/null +++ b/drivers/tty/moxa.c @@ -0,0 +1,2092 @@ +/*****************************************************************************/ +/* + * moxa.c -- MOXA Intellio family multiport serial driver. + * + * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). + * Copyright (c) 2007 Jiri Slaby + * + * This code is loosely based on the Linux serial driver, written by + * Linus Torvalds, Theodore T'so and others. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +/* + * MOXA Intellio Series Driver + * for : LINUX + * date : 1999/1/7 + * version : 5.1 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "moxa.h" + +#define MOXA_VERSION "6.0k" + +#define MOXA_FW_HDRLEN 32 + +#define MOXAMAJOR 172 + +#define MAX_BOARDS 4 /* Don't change this value */ +#define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ +#define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) + +#define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ + (brd)->boardType == MOXA_BOARD_C320_PCI) + +/* + * Define the Moxa PCI vendor and device IDs. + */ +#define MOXA_BUS_TYPE_ISA 0 +#define MOXA_BUS_TYPE_PCI 1 + +enum { + MOXA_BOARD_C218_PCI = 1, + MOXA_BOARD_C218_ISA, + MOXA_BOARD_C320_PCI, + MOXA_BOARD_C320_ISA, + MOXA_BOARD_CP204J, +}; + +static char *moxa_brdname[] = +{ + "C218 Turbo PCI series", + "C218 Turbo ISA series", + "C320 Turbo PCI series", + "C320 Turbo ISA series", + "CP-204J series", +}; + +#ifdef CONFIG_PCI +static struct pci_device_id moxa_pcibrds[] = { + { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), + .driver_data = MOXA_BOARD_C218_PCI }, + { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), + .driver_data = MOXA_BOARD_C320_PCI }, + { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), + .driver_data = MOXA_BOARD_CP204J }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, moxa_pcibrds); +#endif /* CONFIG_PCI */ + +struct moxa_port; + +static struct moxa_board_conf { + int boardType; + int numPorts; + int busType; + + unsigned int ready; + + struct moxa_port *ports; + + void __iomem *basemem; + void __iomem *intNdx; + void __iomem *intPend; + void __iomem *intTable; +} moxa_boards[MAX_BOARDS]; + +struct mxser_mstatus { + tcflag_t cflag; + int cts; + int dsr; + int ri; + int dcd; +}; + +struct moxaq_str { + int inq; + int outq; +}; + +struct moxa_port { + struct tty_port port; + struct moxa_board_conf *board; + void __iomem *tableAddr; + + int type; + int cflag; + unsigned long statusflags; + + u8 DCDState; /* Protected by the port lock */ + u8 lineCtrl; + u8 lowChkFlag; +}; + +struct mon_str { + int tick; + int rxcnt[MAX_PORTS]; + int txcnt[MAX_PORTS]; +}; + +/* statusflags */ +#define TXSTOPPED 1 +#define LOWWAIT 2 +#define EMPTYWAIT 3 + +#define SERIAL_DO_RESTART + +#define WAKEUP_CHARS 256 + +static int ttymajor = MOXAMAJOR; +static struct mon_str moxaLog; +static unsigned int moxaFuncTout = HZ / 2; +static unsigned int moxaLowWaterChk; +static DEFINE_MUTEX(moxa_openlock); +static DEFINE_SPINLOCK(moxa_lock); + +static unsigned long baseaddr[MAX_BOARDS]; +static unsigned int type[MAX_BOARDS]; +static unsigned int numports[MAX_BOARDS]; + +MODULE_AUTHOR("William Chen"); +MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE("c218tunx.cod"); +MODULE_FIRMWARE("cp204unx.cod"); +MODULE_FIRMWARE("c320tunx.cod"); + +module_param_array(type, uint, NULL, 0); +MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); +module_param_array(baseaddr, ulong, NULL, 0); +MODULE_PARM_DESC(baseaddr, "base address"); +module_param_array(numports, uint, NULL, 0); +MODULE_PARM_DESC(numports, "numports (ignored for C218)"); + +module_param(ttymajor, int, 0); + +/* + * static functions: + */ +static int moxa_open(struct tty_struct *, struct file *); +static void moxa_close(struct tty_struct *, struct file *); +static int moxa_write(struct tty_struct *, const unsigned char *, int); +static int moxa_write_room(struct tty_struct *); +static void moxa_flush_buffer(struct tty_struct *); +static int moxa_chars_in_buffer(struct tty_struct *); +static void moxa_set_termios(struct tty_struct *, struct ktermios *); +static void moxa_stop(struct tty_struct *); +static void moxa_start(struct tty_struct *); +static void moxa_hangup(struct tty_struct *); +static int moxa_tiocmget(struct tty_struct *tty); +static int moxa_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); +static void moxa_poll(unsigned long); +static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); +static void moxa_shutdown(struct tty_port *); +static int moxa_carrier_raised(struct tty_port *); +static void moxa_dtr_rts(struct tty_port *, int); +/* + * moxa board interface functions: + */ +static void MoxaPortEnable(struct moxa_port *); +static void MoxaPortDisable(struct moxa_port *); +static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); +static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); +static void MoxaPortLineCtrl(struct moxa_port *, int, int); +static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); +static int MoxaPortLineStatus(struct moxa_port *); +static void MoxaPortFlushData(struct moxa_port *, int); +static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); +static int MoxaPortReadData(struct moxa_port *); +static int MoxaPortTxQueue(struct moxa_port *); +static int MoxaPortRxQueue(struct moxa_port *); +static int MoxaPortTxFree(struct moxa_port *); +static void MoxaPortTxDisable(struct moxa_port *); +static void MoxaPortTxEnable(struct moxa_port *); +static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); +static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); +static void MoxaSetFifo(struct moxa_port *port, int enable); + +/* + * I/O functions + */ + +static DEFINE_SPINLOCK(moxafunc_lock); + +static void moxa_wait_finish(void __iomem *ofsAddr) +{ + unsigned long end = jiffies + moxaFuncTout; + + while (readw(ofsAddr + FuncCode) != 0) + if (time_after(jiffies, end)) + return; + if (readw(ofsAddr + FuncCode) != 0 && printk_ratelimit()) + printk(KERN_WARNING "moxa function expired\n"); +} + +static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) +{ + unsigned long flags; + spin_lock_irqsave(&moxafunc_lock, flags); + writew(arg, ofsAddr + FuncArg); + writew(cmd, ofsAddr + FuncCode); + moxa_wait_finish(ofsAddr); + spin_unlock_irqrestore(&moxafunc_lock, flags); +} + +static int moxafuncret(void __iomem *ofsAddr, u16 cmd, u16 arg) +{ + unsigned long flags; + u16 ret; + spin_lock_irqsave(&moxafunc_lock, flags); + writew(arg, ofsAddr + FuncArg); + writew(cmd, ofsAddr + FuncCode); + moxa_wait_finish(ofsAddr); + ret = readw(ofsAddr + FuncArg); + spin_unlock_irqrestore(&moxafunc_lock, flags); + return ret; +} + +static void moxa_low_water_check(void __iomem *ofsAddr) +{ + u16 rptr, wptr, mask, len; + + if (readb(ofsAddr + FlagStat) & Xoff_state) { + rptr = readw(ofsAddr + RXrptr); + wptr = readw(ofsAddr + RXwptr); + mask = readw(ofsAddr + RX_mask); + len = (wptr - rptr) & mask; + if (len <= Low_water) + moxafunc(ofsAddr, FC_SendXon, 0); + } +} + +/* + * TTY operations + */ + +static int moxa_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct moxa_port *ch = tty->driver_data; + void __user *argp = (void __user *)arg; + int status, ret = 0; + + if (tty->index == MAX_PORTS) { + if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && + cmd != MOXA_GETMSTATUS) + return -EINVAL; + } else if (!ch) + return -ENODEV; + + switch (cmd) { + case MOXA_GETDATACOUNT: + moxaLog.tick = jiffies; + if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) + ret = -EFAULT; + break; + case MOXA_FLUSH_QUEUE: + MoxaPortFlushData(ch, arg); + break; + case MOXA_GET_IOQUEUE: { + struct moxaq_str __user *argm = argp; + struct moxaq_str tmp; + struct moxa_port *p; + unsigned int i, j; + + for (i = 0; i < MAX_BOARDS; i++) { + p = moxa_boards[i].ports; + for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { + memset(&tmp, 0, sizeof(tmp)); + spin_lock_bh(&moxa_lock); + if (moxa_boards[i].ready) { + tmp.inq = MoxaPortRxQueue(p); + tmp.outq = MoxaPortTxQueue(p); + } + spin_unlock_bh(&moxa_lock); + if (copy_to_user(argm, &tmp, sizeof(tmp))) + return -EFAULT; + } + } + break; + } case MOXA_GET_OQUEUE: + status = MoxaPortTxQueue(ch); + ret = put_user(status, (unsigned long __user *)argp); + break; + case MOXA_GET_IQUEUE: + status = MoxaPortRxQueue(ch); + ret = put_user(status, (unsigned long __user *)argp); + break; + case MOXA_GETMSTATUS: { + struct mxser_mstatus __user *argm = argp; + struct mxser_mstatus tmp; + struct moxa_port *p; + unsigned int i, j; + + for (i = 0; i < MAX_BOARDS; i++) { + p = moxa_boards[i].ports; + for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { + struct tty_struct *ttyp; + memset(&tmp, 0, sizeof(tmp)); + spin_lock_bh(&moxa_lock); + if (!moxa_boards[i].ready) { + spin_unlock_bh(&moxa_lock); + goto copy; + } + + status = MoxaPortLineStatus(p); + spin_unlock_bh(&moxa_lock); + + if (status & 1) + tmp.cts = 1; + if (status & 2) + tmp.dsr = 1; + if (status & 4) + tmp.dcd = 1; + + ttyp = tty_port_tty_get(&p->port); + if (!ttyp || !ttyp->termios) + tmp.cflag = p->cflag; + else + tmp.cflag = ttyp->termios->c_cflag; + tty_kref_put(tty); +copy: + if (copy_to_user(argm, &tmp, sizeof(tmp))) + return -EFAULT; + } + } + break; + } + case TIOCGSERIAL: + mutex_lock(&ch->port.mutex); + ret = moxa_get_serial_info(ch, argp); + mutex_unlock(&ch->port.mutex); + break; + case TIOCSSERIAL: + mutex_lock(&ch->port.mutex); + ret = moxa_set_serial_info(ch, argp); + mutex_unlock(&ch->port.mutex); + break; + default: + ret = -ENOIOCTLCMD; + } + return ret; +} + +static int moxa_break_ctl(struct tty_struct *tty, int state) +{ + struct moxa_port *port = tty->driver_data; + + moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, + Magic_code); + return 0; +} + +static const struct tty_operations moxa_ops = { + .open = moxa_open, + .close = moxa_close, + .write = moxa_write, + .write_room = moxa_write_room, + .flush_buffer = moxa_flush_buffer, + .chars_in_buffer = moxa_chars_in_buffer, + .ioctl = moxa_ioctl, + .set_termios = moxa_set_termios, + .stop = moxa_stop, + .start = moxa_start, + .hangup = moxa_hangup, + .break_ctl = moxa_break_ctl, + .tiocmget = moxa_tiocmget, + .tiocmset = moxa_tiocmset, +}; + +static const struct tty_port_operations moxa_port_ops = { + .carrier_raised = moxa_carrier_raised, + .dtr_rts = moxa_dtr_rts, + .shutdown = moxa_shutdown, +}; + +static struct tty_driver *moxaDriver; +static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); + +/* + * HW init + */ + +static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) +{ + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + if (model != 1) + goto err; + break; + case MOXA_BOARD_CP204J: + if (model != 3) + goto err; + break; + default: + if (model != 2) + goto err; + break; + } + return 0; +err: + return -EINVAL; +} + +static int moxa_check_fw(const void *ptr) +{ + const __le16 *lptr = ptr; + + if (*lptr != cpu_to_le16(0x7980)) + return -EINVAL; + + return 0; +} + +static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, + size_t len) +{ + void __iomem *baseAddr = brd->basemem; + u16 tmp; + + writeb(HW_reset, baseAddr + Control_reg); /* reset */ + msleep(10); + memset_io(baseAddr, 0, 4096); + memcpy_toio(baseAddr, buf, len); /* download BIOS */ + writeb(0, baseAddr + Control_reg); /* restart */ + + msleep(2000); + + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + tmp = readw(baseAddr + C218_key); + if (tmp != C218_KeyCode) + goto err; + break; + case MOXA_BOARD_CP204J: + tmp = readw(baseAddr + C218_key); + if (tmp != CP204J_KeyCode) + goto err; + break; + default: + tmp = readw(baseAddr + C320_key); + if (tmp != C320_KeyCode) + goto err; + tmp = readw(baseAddr + C320_status); + if (tmp != STS_init) { + printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " + "module not found\n"); + return -EIO; + } + break; + } + + return 0; +err: + printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); + return -EIO; +} + +static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, + size_t len) +{ + void __iomem *baseAddr = brd->basemem; + + if (len < 7168) { + printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); + return -EINVAL; + } + + writew(len - 7168 - 2, baseAddr + C320bapi_len); + writeb(1, baseAddr + Control_reg); /* Select Page 1 */ + memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); + writeb(2, baseAddr + Control_reg); /* Select Page 2 */ + memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); + + return 0; +} + +static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, + size_t len) +{ + void __iomem *baseAddr = brd->basemem; + const __le16 *uptr = ptr; + size_t wlen, len2, j; + unsigned long key, loadbuf, loadlen, checksum, checksum_ok; + unsigned int i, retry; + u16 usum, keycode; + + keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : + C218_KeyCode; + + switch (brd->boardType) { + case MOXA_BOARD_CP204J: + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + key = C218_key; + loadbuf = C218_LoadBuf; + loadlen = C218DLoad_len; + checksum = C218check_sum; + checksum_ok = C218chksum_ok; + break; + default: + key = C320_key; + keycode = C320_KeyCode; + loadbuf = C320_LoadBuf; + loadlen = C320DLoad_len; + checksum = C320check_sum; + checksum_ok = C320chksum_ok; + break; + } + + usum = 0; + wlen = len >> 1; + for (i = 0; i < wlen; i++) + usum += le16_to_cpu(uptr[i]); + retry = 0; + do { + wlen = len >> 1; + j = 0; + while (wlen) { + len2 = (wlen > 2048) ? 2048 : wlen; + wlen -= len2; + memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); + j += len2 << 1; + + writew(len2, baseAddr + loadlen); + writew(0, baseAddr + key); + for (i = 0; i < 100; i++) { + if (readw(baseAddr + key) == keycode) + break; + msleep(10); + } + if (readw(baseAddr + key) != keycode) + return -EIO; + } + writew(0, baseAddr + loadlen); + writew(usum, baseAddr + checksum); + writew(0, baseAddr + key); + for (i = 0; i < 100; i++) { + if (readw(baseAddr + key) == keycode) + break; + msleep(10); + } + retry++; + } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); + if (readb(baseAddr + checksum_ok) != 1) + return -EIO; + + writew(0, baseAddr + key); + for (i = 0; i < 600; i++) { + if (readw(baseAddr + Magic_no) == Magic_code) + break; + msleep(10); + } + if (readw(baseAddr + Magic_no) != Magic_code) + return -EIO; + + if (MOXA_IS_320(brd)) { + if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ + writew(0x3800, baseAddr + TMS320_PORT1); + writew(0x3900, baseAddr + TMS320_PORT2); + writew(28499, baseAddr + TMS320_CLOCK); + } else { + writew(0x3200, baseAddr + TMS320_PORT1); + writew(0x3400, baseAddr + TMS320_PORT2); + writew(19999, baseAddr + TMS320_CLOCK); + } + } + writew(1, baseAddr + Disable_IRQ); + writew(0, baseAddr + Magic_no); + for (i = 0; i < 500; i++) { + if (readw(baseAddr + Magic_no) == Magic_code) + break; + msleep(10); + } + if (readw(baseAddr + Magic_no) != Magic_code) + return -EIO; + + if (MOXA_IS_320(brd)) { + j = readw(baseAddr + Module_cnt); + if (j <= 0) + return -EIO; + brd->numPorts = j * 8; + writew(j, baseAddr + Module_no); + writew(0, baseAddr + Magic_no); + for (i = 0; i < 600; i++) { + if (readw(baseAddr + Magic_no) == Magic_code) + break; + msleep(10); + } + if (readw(baseAddr + Magic_no) != Magic_code) + return -EIO; + } + brd->intNdx = baseAddr + IRQindex; + brd->intPend = baseAddr + IRQpending; + brd->intTable = baseAddr + IRQtable; + + return 0; +} + +static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, + size_t len) +{ + void __iomem *ofsAddr, *baseAddr = brd->basemem; + struct moxa_port *port; + int retval, i; + + if (len % 2) { + printk(KERN_ERR "MOXA: bios length is not even\n"); + return -EINVAL; + } + + retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ + if (retval) + return retval; + + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + case MOXA_BOARD_CP204J: + port = brd->ports; + for (i = 0; i < brd->numPorts; i++, port++) { + port->board = brd; + port->DCDState = 0; + port->tableAddr = baseAddr + Extern_table + + Extern_size * i; + ofsAddr = port->tableAddr; + writew(C218rx_mask, ofsAddr + RX_mask); + writew(C218tx_mask, ofsAddr + TX_mask); + writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); + + writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); + + } + break; + default: + port = brd->ports; + for (i = 0; i < brd->numPorts; i++, port++) { + port->board = brd; + port->DCDState = 0; + port->tableAddr = baseAddr + Extern_table + + Extern_size * i; + ofsAddr = port->tableAddr; + switch (brd->numPorts) { + case 8: + writew(C320p8rx_mask, ofsAddr + RX_mask); + writew(C320p8tx_mask, ofsAddr + TX_mask); + writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); + writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); + + break; + case 16: + writew(C320p16rx_mask, ofsAddr + RX_mask); + writew(C320p16tx_mask, ofsAddr + TX_mask); + writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); + writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); + break; + + case 24: + writew(C320p24rx_mask, ofsAddr + RX_mask); + writew(C320p24tx_mask, ofsAddr + TX_mask); + writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); + writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); + writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); + break; + case 32: + writew(C320p32rx_mask, ofsAddr + RX_mask); + writew(C320p32tx_mask, ofsAddr + TX_mask); + writew(C320p32tx_ofs, ofsAddr + Ofs_txb); + writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); + writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); + writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); + writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); + break; + } + } + break; + } + return 0; +} + +static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) +{ + const void *ptr = fw->data; + char rsn[64]; + u16 lens[5]; + size_t len; + unsigned int a, lenp, lencnt; + int ret = -EINVAL; + struct { + __le32 magic; /* 0x34303430 */ + u8 reserved1[2]; + u8 type; /* UNIX = 3 */ + u8 model; /* C218T=1, C320T=2, CP204=3 */ + u8 reserved2[8]; + __le16 len[5]; + } const *hdr = ptr; + + BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); + + if (fw->size < MOXA_FW_HDRLEN) { + strcpy(rsn, "too short (even header won't fit)"); + goto err; + } + if (hdr->magic != cpu_to_le32(0x30343034)) { + sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); + goto err; + } + if (hdr->type != 3) { + sprintf(rsn, "not for linux, type is %u", hdr->type); + goto err; + } + if (moxa_check_fw_model(brd, hdr->model)) { + sprintf(rsn, "not for this card, model is %u", hdr->model); + goto err; + } + + len = MOXA_FW_HDRLEN; + lencnt = hdr->model == 2 ? 5 : 3; + for (a = 0; a < ARRAY_SIZE(lens); a++) { + lens[a] = le16_to_cpu(hdr->len[a]); + if (lens[a] && len + lens[a] <= fw->size && + moxa_check_fw(&fw->data[len])) + printk(KERN_WARNING "MOXA firmware: unexpected input " + "at offset %u, but going on\n", (u32)len); + if (!lens[a] && a < lencnt) { + sprintf(rsn, "too few entries in fw file"); + goto err; + } + len += lens[a]; + } + + if (len != fw->size) { + sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, + (u32)len); + goto err; + } + + ptr += MOXA_FW_HDRLEN; + lenp = 0; /* bios */ + + strcpy(rsn, "read above"); + + ret = moxa_load_bios(brd, ptr, lens[lenp]); + if (ret) + goto err; + + /* we skip the tty section (lens[1]), since we don't need it */ + ptr += lens[lenp] + lens[lenp + 1]; + lenp += 2; /* comm */ + + if (hdr->model == 2) { + ret = moxa_load_320b(brd, ptr, lens[lenp]); + if (ret) + goto err; + /* skip another tty */ + ptr += lens[lenp] + lens[lenp + 1]; + lenp += 2; + } + + ret = moxa_load_code(brd, ptr, lens[lenp]); + if (ret) + goto err; + + return 0; +err: + printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); + return ret; +} + +static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) +{ + const struct firmware *fw; + const char *file; + struct moxa_port *p; + unsigned int i; + int ret; + + brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), + GFP_KERNEL); + if (brd->ports == NULL) { + printk(KERN_ERR "cannot allocate memory for ports\n"); + ret = -ENOMEM; + goto err; + } + + for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { + tty_port_init(&p->port); + p->port.ops = &moxa_port_ops; + p->type = PORT_16550A; + p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; + } + + switch (brd->boardType) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + file = "c218tunx.cod"; + break; + case MOXA_BOARD_CP204J: + file = "cp204unx.cod"; + break; + default: + file = "c320tunx.cod"; + break; + } + + ret = request_firmware(&fw, file, dev); + if (ret) { + printk(KERN_ERR "MOXA: request_firmware failed. Make sure " + "you've placed '%s' file into your firmware " + "loader directory (e.g. /lib/firmware)\n", + file); + goto err_free; + } + + ret = moxa_load_fw(brd, fw); + + release_firmware(fw); + + if (ret) + goto err_free; + + spin_lock_bh(&moxa_lock); + brd->ready = 1; + if (!timer_pending(&moxaTimer)) + mod_timer(&moxaTimer, jiffies + HZ / 50); + spin_unlock_bh(&moxa_lock); + + return 0; +err_free: + kfree(brd->ports); +err: + return ret; +} + +static void moxa_board_deinit(struct moxa_board_conf *brd) +{ + unsigned int a, opened; + + mutex_lock(&moxa_openlock); + spin_lock_bh(&moxa_lock); + brd->ready = 0; + spin_unlock_bh(&moxa_lock); + + /* pci hot-un-plug support */ + for (a = 0; a < brd->numPorts; a++) + if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { + struct tty_struct *tty = tty_port_tty_get( + &brd->ports[a].port); + if (tty) { + tty_hangup(tty); + tty_kref_put(tty); + } + } + while (1) { + opened = 0; + for (a = 0; a < brd->numPorts; a++) + if (brd->ports[a].port.flags & ASYNC_INITIALIZED) + opened++; + mutex_unlock(&moxa_openlock); + if (!opened) + break; + msleep(50); + mutex_lock(&moxa_openlock); + } + + iounmap(brd->basemem); + brd->basemem = NULL; + kfree(brd->ports); +} + +#ifdef CONFIG_PCI +static int __devinit moxa_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct moxa_board_conf *board; + unsigned int i; + int board_type = ent->driver_data; + int retval; + + retval = pci_enable_device(pdev); + if (retval) { + dev_err(&pdev->dev, "can't enable pci device\n"); + goto err; + } + + for (i = 0; i < MAX_BOARDS; i++) + if (moxa_boards[i].basemem == NULL) + break; + + retval = -ENODEV; + if (i >= MAX_BOARDS) { + dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " + "found. Board is ignored.\n", MAX_BOARDS); + goto err; + } + + board = &moxa_boards[i]; + + retval = pci_request_region(pdev, 2, "moxa-base"); + if (retval) { + dev_err(&pdev->dev, "can't request pci region 2\n"); + goto err; + } + + board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); + if (board->basemem == NULL) { + dev_err(&pdev->dev, "can't remap io space 2\n"); + goto err_reg; + } + + board->boardType = board_type; + switch (board_type) { + case MOXA_BOARD_C218_ISA: + case MOXA_BOARD_C218_PCI: + board->numPorts = 8; + break; + + case MOXA_BOARD_CP204J: + board->numPorts = 4; + break; + default: + board->numPorts = 0; + break; + } + board->busType = MOXA_BUS_TYPE_PCI; + + retval = moxa_init_board(board, &pdev->dev); + if (retval) + goto err_base; + + pci_set_drvdata(pdev, board); + + dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", + moxa_brdname[board_type - 1], board->numPorts); + + return 0; +err_base: + iounmap(board->basemem); + board->basemem = NULL; +err_reg: + pci_release_region(pdev, 2); +err: + return retval; +} + +static void __devexit moxa_pci_remove(struct pci_dev *pdev) +{ + struct moxa_board_conf *brd = pci_get_drvdata(pdev); + + moxa_board_deinit(brd); + + pci_release_region(pdev, 2); +} + +static struct pci_driver moxa_pci_driver = { + .name = "moxa", + .id_table = moxa_pcibrds, + .probe = moxa_pci_probe, + .remove = __devexit_p(moxa_pci_remove) +}; +#endif /* CONFIG_PCI */ + +static int __init moxa_init(void) +{ + unsigned int isabrds = 0; + int retval = 0; + struct moxa_board_conf *brd = moxa_boards; + unsigned int i; + + printk(KERN_INFO "MOXA Intellio family driver version %s\n", + MOXA_VERSION); + moxaDriver = alloc_tty_driver(MAX_PORTS + 1); + if (!moxaDriver) + return -ENOMEM; + + moxaDriver->owner = THIS_MODULE; + moxaDriver->name = "ttyMX"; + moxaDriver->major = ttymajor; + moxaDriver->minor_start = 0; + moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; + moxaDriver->subtype = SERIAL_TYPE_NORMAL; + moxaDriver->init_termios = tty_std_termios; + moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; + moxaDriver->init_termios.c_ispeed = 9600; + moxaDriver->init_termios.c_ospeed = 9600; + moxaDriver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(moxaDriver, &moxa_ops); + + if (tty_register_driver(moxaDriver)) { + printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); + put_tty_driver(moxaDriver); + return -1; + } + + /* Find the boards defined from module args. */ + + for (i = 0; i < MAX_BOARDS; i++) { + if (!baseaddr[i]) + break; + if (type[i] == MOXA_BOARD_C218_ISA || + type[i] == MOXA_BOARD_C320_ISA) { + pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", + isabrds + 1, moxa_brdname[type[i] - 1], + baseaddr[i]); + brd->boardType = type[i]; + brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : + numports[i]; + brd->busType = MOXA_BUS_TYPE_ISA; + brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); + if (!brd->basemem) { + printk(KERN_ERR "MOXA: can't remap %lx\n", + baseaddr[i]); + continue; + } + if (moxa_init_board(brd, NULL)) { + iounmap(brd->basemem); + brd->basemem = NULL; + continue; + } + + printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " + "ready (%u ports, firmware loaded)\n", + baseaddr[i], brd->numPorts); + + brd++; + isabrds++; + } + } + +#ifdef CONFIG_PCI + retval = pci_register_driver(&moxa_pci_driver); + if (retval) { + printk(KERN_ERR "Can't register MOXA pci driver!\n"); + if (isabrds) + retval = 0; + } +#endif + + return retval; +} + +static void __exit moxa_exit(void) +{ + unsigned int i; + +#ifdef CONFIG_PCI + pci_unregister_driver(&moxa_pci_driver); +#endif + + for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ + if (moxa_boards[i].ready) + moxa_board_deinit(&moxa_boards[i]); + + del_timer_sync(&moxaTimer); + + if (tty_unregister_driver(moxaDriver)) + printk(KERN_ERR "Couldn't unregister MOXA Intellio family " + "serial driver\n"); + put_tty_driver(moxaDriver); +} + +module_init(moxa_init); +module_exit(moxa_exit); + +static void moxa_shutdown(struct tty_port *port) +{ + struct moxa_port *ch = container_of(port, struct moxa_port, port); + MoxaPortDisable(ch); + MoxaPortFlushData(ch, 2); + clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags); +} + +static int moxa_carrier_raised(struct tty_port *port) +{ + struct moxa_port *ch = container_of(port, struct moxa_port, port); + int dcd; + + spin_lock_irq(&port->lock); + dcd = ch->DCDState; + spin_unlock_irq(&port->lock); + return dcd; +} + +static void moxa_dtr_rts(struct tty_port *port, int onoff) +{ + struct moxa_port *ch = container_of(port, struct moxa_port, port); + MoxaPortLineCtrl(ch, onoff, onoff); +} + + +static int moxa_open(struct tty_struct *tty, struct file *filp) +{ + struct moxa_board_conf *brd; + struct moxa_port *ch; + int port; + int retval; + + port = tty->index; + if (port == MAX_PORTS) { + return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; + } + if (mutex_lock_interruptible(&moxa_openlock)) + return -ERESTARTSYS; + brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; + if (!brd->ready) { + mutex_unlock(&moxa_openlock); + return -ENODEV; + } + + if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { + mutex_unlock(&moxa_openlock); + return -ENODEV; + } + + ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; + ch->port.count++; + tty->driver_data = ch; + tty_port_tty_set(&ch->port, tty); + mutex_lock(&ch->port.mutex); + if (!(ch->port.flags & ASYNC_INITIALIZED)) { + ch->statusflags = 0; + moxa_set_tty_param(tty, tty->termios); + MoxaPortLineCtrl(ch, 1, 1); + MoxaPortEnable(ch); + MoxaSetFifo(ch, ch->type == PORT_16550A); + ch->port.flags |= ASYNC_INITIALIZED; + } + mutex_unlock(&ch->port.mutex); + mutex_unlock(&moxa_openlock); + + retval = tty_port_block_til_ready(&ch->port, tty, filp); + if (retval == 0) + set_bit(ASYNCB_NORMAL_ACTIVE, &ch->port.flags); + return retval; +} + +static void moxa_close(struct tty_struct *tty, struct file *filp) +{ + struct moxa_port *ch = tty->driver_data; + ch->cflag = tty->termios->c_cflag; + tty_port_close(&ch->port, tty, filp); +} + +static int moxa_write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + struct moxa_port *ch = tty->driver_data; + int len; + + if (ch == NULL) + return 0; + + spin_lock_bh(&moxa_lock); + len = MoxaPortWriteData(tty, buf, count); + spin_unlock_bh(&moxa_lock); + + set_bit(LOWWAIT, &ch->statusflags); + return len; +} + +static int moxa_write_room(struct tty_struct *tty) +{ + struct moxa_port *ch; + + if (tty->stopped) + return 0; + ch = tty->driver_data; + if (ch == NULL) + return 0; + return MoxaPortTxFree(ch); +} + +static void moxa_flush_buffer(struct tty_struct *tty) +{ + struct moxa_port *ch = tty->driver_data; + + if (ch == NULL) + return; + MoxaPortFlushData(ch, 1); + tty_wakeup(tty); +} + +static int moxa_chars_in_buffer(struct tty_struct *tty) +{ + struct moxa_port *ch = tty->driver_data; + int chars; + + chars = MoxaPortTxQueue(ch); + if (chars) + /* + * Make it possible to wakeup anything waiting for output + * in tty_ioctl.c, etc. + */ + set_bit(EMPTYWAIT, &ch->statusflags); + return chars; +} + +static int moxa_tiocmget(struct tty_struct *tty) +{ + struct moxa_port *ch = tty->driver_data; + int flag = 0, dtr, rts; + + MoxaPortGetLineOut(ch, &dtr, &rts); + if (dtr) + flag |= TIOCM_DTR; + if (rts) + flag |= TIOCM_RTS; + dtr = MoxaPortLineStatus(ch); + if (dtr & 1) + flag |= TIOCM_CTS; + if (dtr & 2) + flag |= TIOCM_DSR; + if (dtr & 4) + flag |= TIOCM_CD; + return flag; +} + +static int moxa_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct moxa_port *ch; + int port; + int dtr, rts; + + port = tty->index; + mutex_lock(&moxa_openlock); + ch = tty->driver_data; + if (!ch) { + mutex_unlock(&moxa_openlock); + return -EINVAL; + } + + MoxaPortGetLineOut(ch, &dtr, &rts); + if (set & TIOCM_RTS) + rts = 1; + if (set & TIOCM_DTR) + dtr = 1; + if (clear & TIOCM_RTS) + rts = 0; + if (clear & TIOCM_DTR) + dtr = 0; + MoxaPortLineCtrl(ch, dtr, rts); + mutex_unlock(&moxa_openlock); + return 0; +} + +static void moxa_set_termios(struct tty_struct *tty, + struct ktermios *old_termios) +{ + struct moxa_port *ch = tty->driver_data; + + if (ch == NULL) + return; + moxa_set_tty_param(tty, old_termios); + if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) + wake_up_interruptible(&ch->port.open_wait); +} + +static void moxa_stop(struct tty_struct *tty) +{ + struct moxa_port *ch = tty->driver_data; + + if (ch == NULL) + return; + MoxaPortTxDisable(ch); + set_bit(TXSTOPPED, &ch->statusflags); +} + + +static void moxa_start(struct tty_struct *tty) +{ + struct moxa_port *ch = tty->driver_data; + + if (ch == NULL) + return; + + if (!(ch->statusflags & TXSTOPPED)) + return; + + MoxaPortTxEnable(ch); + clear_bit(TXSTOPPED, &ch->statusflags); +} + +static void moxa_hangup(struct tty_struct *tty) +{ + struct moxa_port *ch = tty->driver_data; + tty_port_hangup(&ch->port); +} + +static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) +{ + struct tty_struct *tty; + unsigned long flags; + dcd = !!dcd; + + spin_lock_irqsave(&p->port.lock, flags); + if (dcd != p->DCDState) { + p->DCDState = dcd; + spin_unlock_irqrestore(&p->port.lock, flags); + tty = tty_port_tty_get(&p->port); + if (tty && C_CLOCAL(tty) && !dcd) + tty_hangup(tty); + tty_kref_put(tty); + } + else + spin_unlock_irqrestore(&p->port.lock, flags); +} + +static int moxa_poll_port(struct moxa_port *p, unsigned int handle, + u16 __iomem *ip) +{ + struct tty_struct *tty = tty_port_tty_get(&p->port); + void __iomem *ofsAddr; + unsigned int inited = p->port.flags & ASYNC_INITIALIZED; + u16 intr; + + if (tty) { + if (test_bit(EMPTYWAIT, &p->statusflags) && + MoxaPortTxQueue(p) == 0) { + clear_bit(EMPTYWAIT, &p->statusflags); + tty_wakeup(tty); + } + if (test_bit(LOWWAIT, &p->statusflags) && !tty->stopped && + MoxaPortTxQueue(p) <= WAKEUP_CHARS) { + clear_bit(LOWWAIT, &p->statusflags); + tty_wakeup(tty); + } + + if (inited && !test_bit(TTY_THROTTLED, &tty->flags) && + MoxaPortRxQueue(p) > 0) { /* RX */ + MoxaPortReadData(p); + tty_schedule_flip(tty); + } + } else { + clear_bit(EMPTYWAIT, &p->statusflags); + MoxaPortFlushData(p, 0); /* flush RX */ + } + + if (!handle) /* nothing else to do */ + goto put; + + intr = readw(ip); /* port irq status */ + if (intr == 0) + goto put; + + writew(0, ip); /* ACK port */ + ofsAddr = p->tableAddr; + if (intr & IntrTx) /* disable tx intr */ + writew(readw(ofsAddr + HostStat) & ~WakeupTx, + ofsAddr + HostStat); + + if (!inited) + goto put; + + if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ + tty_insert_flip_char(tty, 0, TTY_BREAK); + tty_schedule_flip(tty); + } + + if (intr & IntrLine) + moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); +put: + tty_kref_put(tty); + + return 0; +} + +static void moxa_poll(unsigned long ignored) +{ + struct moxa_board_conf *brd; + u16 __iomem *ip; + unsigned int card, port, served = 0; + + spin_lock(&moxa_lock); + for (card = 0; card < MAX_BOARDS; card++) { + brd = &moxa_boards[card]; + if (!brd->ready) + continue; + + served++; + + ip = NULL; + if (readb(brd->intPend) == 0xff) + ip = brd->intTable + readb(brd->intNdx); + + for (port = 0; port < brd->numPorts; port++) + moxa_poll_port(&brd->ports[port], !!ip, ip + port); + + if (ip) + writeb(0, brd->intPend); /* ACK */ + + if (moxaLowWaterChk) { + struct moxa_port *p = brd->ports; + for (port = 0; port < brd->numPorts; port++, p++) + if (p->lowChkFlag) { + p->lowChkFlag = 0; + moxa_low_water_check(p->tableAddr); + } + } + } + moxaLowWaterChk = 0; + + if (served) + mod_timer(&moxaTimer, jiffies + HZ / 50); + spin_unlock(&moxa_lock); +} + +/******************************************************************************/ + +static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) +{ + register struct ktermios *ts = tty->termios; + struct moxa_port *ch = tty->driver_data; + int rts, cts, txflow, rxflow, xany, baud; + + rts = cts = txflow = rxflow = xany = 0; + if (ts->c_cflag & CRTSCTS) + rts = cts = 1; + if (ts->c_iflag & IXON) + txflow = 1; + if (ts->c_iflag & IXOFF) + rxflow = 1; + if (ts->c_iflag & IXANY) + xany = 1; + + /* Clear the features we don't support */ + ts->c_cflag &= ~CMSPAR; + MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); + baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); + if (baud == -1) + baud = tty_termios_baud_rate(old_termios); + /* Not put the baud rate into the termios data */ + tty_encode_baud_rate(tty, baud, baud); +} + +/***************************************************************************** + * Driver level functions: * + *****************************************************************************/ + +static void MoxaPortFlushData(struct moxa_port *port, int mode) +{ + void __iomem *ofsAddr; + if (mode < 0 || mode > 2) + return; + ofsAddr = port->tableAddr; + moxafunc(ofsAddr, FC_FlushQueue, mode); + if (mode != 1) { + port->lowChkFlag = 0; + moxa_low_water_check(ofsAddr); + } +} + +/* + * Moxa Port Number Description: + * + * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, + * the port number using in MOXA driver functions will be 0 to 31 for + * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 + * to 127 for fourth. For example, if you setup three MOXA boards, + * first board is C218, second board is C320-16 and third board is + * C320-32. The port number of first board (C218 - 8 ports) is from + * 0 to 7. The port number of second board (C320 - 16 ports) is form + * 32 to 47. The port number of third board (C320 - 32 ports) is from + * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to + * 127 will be invalid. + * + * + * Moxa Functions Description: + * + * Function 1: Driver initialization routine, this routine must be + * called when initialized driver. + * Syntax: + * void MoxaDriverInit(); + * + * + * Function 2: Moxa driver private IOCTL command processing. + * Syntax: + * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); + * + * unsigned int cmd : IOCTL command + * unsigned long arg : IOCTL argument + * int port : port number (0 - 127) + * + * return: 0 (OK) + * -EINVAL + * -ENOIOCTLCMD + * + * + * Function 6: Enable this port to start Tx/Rx data. + * Syntax: + * void MoxaPortEnable(int port); + * int port : port number (0 - 127) + * + * + * Function 7: Disable this port + * Syntax: + * void MoxaPortDisable(int port); + * int port : port number (0 - 127) + * + * + * Function 10: Setting baud rate of this port. + * Syntax: + * speed_t MoxaPortSetBaud(int port, speed_t baud); + * int port : port number (0 - 127) + * long baud : baud rate (50 - 115200) + * + * return: 0 : this port is invalid or baud < 50 + * 50 - 115200 : the real baud rate set to the port, if + * the argument baud is large than maximun + * available baud rate, the real setting + * baud rate will be the maximun baud rate. + * + * + * Function 12: Configure the port. + * Syntax: + * int MoxaPortSetTermio(int port, struct ktermios *termio, speed_t baud); + * int port : port number (0 - 127) + * struct ktermios * termio : termio structure pointer + * speed_t baud : baud rate + * + * return: -1 : this port is invalid or termio == NULL + * 0 : setting O.K. + * + * + * Function 13: Get the DTR/RTS state of this port. + * Syntax: + * int MoxaPortGetLineOut(int port, int *dtrState, int *rtsState); + * int port : port number (0 - 127) + * int * dtrState : pointer to INT to receive the current DTR + * state. (if NULL, this function will not + * write to this address) + * int * rtsState : pointer to INT to receive the current RTS + * state. (if NULL, this function will not + * write to this address) + * + * return: -1 : this port is invalid + * 0 : O.K. + * + * + * Function 14: Setting the DTR/RTS output state of this port. + * Syntax: + * void MoxaPortLineCtrl(int port, int dtrState, int rtsState); + * int port : port number (0 - 127) + * int dtrState : DTR output state (0: off, 1: on) + * int rtsState : RTS output state (0: off, 1: on) + * + * + * Function 15: Setting the flow control of this port. + * Syntax: + * void MoxaPortFlowCtrl(int port, int rtsFlow, int ctsFlow, int rxFlow, + * int txFlow,int xany); + * int port : port number (0 - 127) + * int rtsFlow : H/W RTS flow control (0: no, 1: yes) + * int ctsFlow : H/W CTS flow control (0: no, 1: yes) + * int rxFlow : S/W Rx XON/XOFF flow control (0: no, 1: yes) + * int txFlow : S/W Tx XON/XOFF flow control (0: no, 1: yes) + * int xany : S/W XANY flow control (0: no, 1: yes) + * + * + * Function 16: Get ths line status of this port + * Syntax: + * int MoxaPortLineStatus(int port); + * int port : port number (0 - 127) + * + * return: Bit 0 - CTS state (0: off, 1: on) + * Bit 1 - DSR state (0: off, 1: on) + * Bit 2 - DCD state (0: off, 1: on) + * + * + * Function 19: Flush the Rx/Tx buffer data of this port. + * Syntax: + * void MoxaPortFlushData(int port, int mode); + * int port : port number (0 - 127) + * int mode + * 0 : flush the Rx buffer + * 1 : flush the Tx buffer + * 2 : flush the Rx and Tx buffer + * + * + * Function 20: Write data. + * Syntax: + * int MoxaPortWriteData(int port, unsigned char * buffer, int length); + * int port : port number (0 - 127) + * unsigned char * buffer : pointer to write data buffer. + * int length : write data length + * + * return: 0 - length : real write data length + * + * + * Function 21: Read data. + * Syntax: + * int MoxaPortReadData(int port, struct tty_struct *tty); + * int port : port number (0 - 127) + * struct tty_struct *tty : tty for data + * + * return: 0 - length : real read data length + * + * + * Function 24: Get the Tx buffer current queued data bytes + * Syntax: + * int MoxaPortTxQueue(int port); + * int port : port number (0 - 127) + * + * return: .. : Tx buffer current queued data bytes + * + * + * Function 25: Get the Tx buffer current free space + * Syntax: + * int MoxaPortTxFree(int port); + * int port : port number (0 - 127) + * + * return: .. : Tx buffer current free space + * + * + * Function 26: Get the Rx buffer current queued data bytes + * Syntax: + * int MoxaPortRxQueue(int port); + * int port : port number (0 - 127) + * + * return: .. : Rx buffer current queued data bytes + * + * + * Function 28: Disable port data transmission. + * Syntax: + * void MoxaPortTxDisable(int port); + * int port : port number (0 - 127) + * + * + * Function 29: Enable port data transmission. + * Syntax: + * void MoxaPortTxEnable(int port); + * int port : port number (0 - 127) + * + * + * Function 31: Get the received BREAK signal count and reset it. + * Syntax: + * int MoxaPortResetBrkCnt(int port); + * int port : port number (0 - 127) + * + * return: 0 - .. : BREAK signal count + * + * + */ + +static void MoxaPortEnable(struct moxa_port *port) +{ + void __iomem *ofsAddr; + u16 lowwater = 512; + + ofsAddr = port->tableAddr; + writew(lowwater, ofsAddr + Low_water); + if (MOXA_IS_320(port->board)) + moxafunc(ofsAddr, FC_SetBreakIrq, 0); + else + writew(readw(ofsAddr + HostStat) | WakeupBreak, + ofsAddr + HostStat); + + moxafunc(ofsAddr, FC_SetLineIrq, Magic_code); + moxafunc(ofsAddr, FC_FlushQueue, 2); + + moxafunc(ofsAddr, FC_EnableCH, Magic_code); + MoxaPortLineStatus(port); +} + +static void MoxaPortDisable(struct moxa_port *port) +{ + void __iomem *ofsAddr = port->tableAddr; + + moxafunc(ofsAddr, FC_SetFlowCtl, 0); /* disable flow control */ + moxafunc(ofsAddr, FC_ClrLineIrq, Magic_code); + writew(0, ofsAddr + HostStat); + moxafunc(ofsAddr, FC_DisableCH, Magic_code); +} + +static speed_t MoxaPortSetBaud(struct moxa_port *port, speed_t baud) +{ + void __iomem *ofsAddr = port->tableAddr; + unsigned int clock, val; + speed_t max; + + max = MOXA_IS_320(port->board) ? 460800 : 921600; + if (baud < 50) + return 0; + if (baud > max) + baud = max; + clock = 921600; + val = clock / baud; + moxafunc(ofsAddr, FC_SetBaud, val); + baud = clock / val; + return baud; +} + +static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio, + speed_t baud) +{ + void __iomem *ofsAddr; + tcflag_t cflag; + tcflag_t mode = 0; + + ofsAddr = port->tableAddr; + cflag = termio->c_cflag; /* termio->c_cflag */ + + mode = termio->c_cflag & CSIZE; + if (mode == CS5) + mode = MX_CS5; + else if (mode == CS6) + mode = MX_CS6; + else if (mode == CS7) + mode = MX_CS7; + else if (mode == CS8) + mode = MX_CS8; + + if (termio->c_cflag & CSTOPB) { + if (mode == MX_CS5) + mode |= MX_STOP15; + else + mode |= MX_STOP2; + } else + mode |= MX_STOP1; + + if (termio->c_cflag & PARENB) { + if (termio->c_cflag & PARODD) + mode |= MX_PARODD; + else + mode |= MX_PAREVEN; + } else + mode |= MX_PARNONE; + + moxafunc(ofsAddr, FC_SetDataMode, (u16)mode); + + if (MOXA_IS_320(port->board) && baud >= 921600) + return -1; + + baud = MoxaPortSetBaud(port, baud); + + if (termio->c_iflag & (IXON | IXOFF | IXANY)) { + spin_lock_irq(&moxafunc_lock); + writeb(termio->c_cc[VSTART], ofsAddr + FuncArg); + writeb(termio->c_cc[VSTOP], ofsAddr + FuncArg1); + writeb(FC_SetXonXoff, ofsAddr + FuncCode); + moxa_wait_finish(ofsAddr); + spin_unlock_irq(&moxafunc_lock); + + } + return baud; +} + +static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState, + int *rtsState) +{ + if (dtrState) + *dtrState = !!(port->lineCtrl & DTR_ON); + if (rtsState) + *rtsState = !!(port->lineCtrl & RTS_ON); + + return 0; +} + +static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts) +{ + u8 mode = 0; + + if (dtr) + mode |= DTR_ON; + if (rts) + mode |= RTS_ON; + port->lineCtrl = mode; + moxafunc(port->tableAddr, FC_LineControl, mode); +} + +static void MoxaPortFlowCtrl(struct moxa_port *port, int rts, int cts, + int txflow, int rxflow, int txany) +{ + int mode = 0; + + if (rts) + mode |= RTS_FlowCtl; + if (cts) + mode |= CTS_FlowCtl; + if (txflow) + mode |= Tx_FlowCtl; + if (rxflow) + mode |= Rx_FlowCtl; + if (txany) + mode |= IXM_IXANY; + moxafunc(port->tableAddr, FC_SetFlowCtl, mode); +} + +static int MoxaPortLineStatus(struct moxa_port *port) +{ + void __iomem *ofsAddr; + int val; + + ofsAddr = port->tableAddr; + if (MOXA_IS_320(port->board)) + val = moxafuncret(ofsAddr, FC_LineStatus, 0); + else + val = readw(ofsAddr + FlagStat) >> 4; + val &= 0x0B; + if (val & 8) + val |= 4; + moxa_new_dcdstate(port, val & 8); + val &= 7; + return val; +} + +static int MoxaPortWriteData(struct tty_struct *tty, + const unsigned char *buffer, int len) +{ + struct moxa_port *port = tty->driver_data; + void __iomem *baseAddr, *ofsAddr, *ofs; + unsigned int c, total; + u16 head, tail, tx_mask, spage, epage; + u16 pageno, pageofs, bufhead; + + ofsAddr = port->tableAddr; + baseAddr = port->board->basemem; + tx_mask = readw(ofsAddr + TX_mask); + spage = readw(ofsAddr + Page_txb); + epage = readw(ofsAddr + EndPage_txb); + tail = readw(ofsAddr + TXwptr); + head = readw(ofsAddr + TXrptr); + c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask); + if (c > len) + c = len; + moxaLog.txcnt[port->port.tty->index] += c; + total = c; + if (spage == epage) { + bufhead = readw(ofsAddr + Ofs_txb); + writew(spage, baseAddr + Control_reg); + while (c > 0) { + if (head > tail) + len = head - tail - 1; + else + len = tx_mask + 1 - tail; + len = (c > len) ? len : c; + ofs = baseAddr + DynPage_addr + bufhead + tail; + memcpy_toio(ofs, buffer, len); + buffer += len; + tail = (tail + len) & tx_mask; + c -= len; + } + } else { + pageno = spage + (tail >> 13); + pageofs = tail & Page_mask; + while (c > 0) { + len = Page_size - pageofs; + if (len > c) + len = c; + writeb(pageno, baseAddr + Control_reg); + ofs = baseAddr + DynPage_addr + pageofs; + memcpy_toio(ofs, buffer, len); + buffer += len; + if (++pageno == epage) + pageno = spage; + pageofs = 0; + c -= len; + } + tail = (tail + total) & tx_mask; + } + writew(tail, ofsAddr + TXwptr); + writeb(1, ofsAddr + CD180TXirq); /* start to send */ + return total; +} + +static int MoxaPortReadData(struct moxa_port *port) +{ + struct tty_struct *tty = port->port.tty; + unsigned char *dst; + void __iomem *baseAddr, *ofsAddr, *ofs; + unsigned int count, len, total; + u16 tail, rx_mask, spage, epage; + u16 pageno, pageofs, bufhead, head; + + ofsAddr = port->tableAddr; + baseAddr = port->board->basemem; + head = readw(ofsAddr + RXrptr); + tail = readw(ofsAddr + RXwptr); + rx_mask = readw(ofsAddr + RX_mask); + spage = readw(ofsAddr + Page_rxb); + epage = readw(ofsAddr + EndPage_rxb); + count = (tail >= head) ? (tail - head) : (tail - head + rx_mask + 1); + if (count == 0) + return 0; + + total = count; + moxaLog.rxcnt[tty->index] += total; + if (spage == epage) { + bufhead = readw(ofsAddr + Ofs_rxb); + writew(spage, baseAddr + Control_reg); + while (count > 0) { + ofs = baseAddr + DynPage_addr + bufhead + head; + len = (tail >= head) ? (tail - head) : + (rx_mask + 1 - head); + len = tty_prepare_flip_string(tty, &dst, + min(len, count)); + memcpy_fromio(dst, ofs, len); + head = (head + len) & rx_mask; + count -= len; + } + } else { + pageno = spage + (head >> 13); + pageofs = head & Page_mask; + while (count > 0) { + writew(pageno, baseAddr + Control_reg); + ofs = baseAddr + DynPage_addr + pageofs; + len = tty_prepare_flip_string(tty, &dst, + min(Page_size - pageofs, count)); + memcpy_fromio(dst, ofs, len); + + count -= len; + pageofs = (pageofs + len) & Page_mask; + if (pageofs == 0 && ++pageno == epage) + pageno = spage; + } + head = (head + total) & rx_mask; + } + writew(head, ofsAddr + RXrptr); + if (readb(ofsAddr + FlagStat) & Xoff_state) { + moxaLowWaterChk = 1; + port->lowChkFlag = 1; + } + return total; +} + + +static int MoxaPortTxQueue(struct moxa_port *port) +{ + void __iomem *ofsAddr = port->tableAddr; + u16 rptr, wptr, mask; + + rptr = readw(ofsAddr + TXrptr); + wptr = readw(ofsAddr + TXwptr); + mask = readw(ofsAddr + TX_mask); + return (wptr - rptr) & mask; +} + +static int MoxaPortTxFree(struct moxa_port *port) +{ + void __iomem *ofsAddr = port->tableAddr; + u16 rptr, wptr, mask; + + rptr = readw(ofsAddr + TXrptr); + wptr = readw(ofsAddr + TXwptr); + mask = readw(ofsAddr + TX_mask); + return mask - ((wptr - rptr) & mask); +} + +static int MoxaPortRxQueue(struct moxa_port *port) +{ + void __iomem *ofsAddr = port->tableAddr; + u16 rptr, wptr, mask; + + rptr = readw(ofsAddr + RXrptr); + wptr = readw(ofsAddr + RXwptr); + mask = readw(ofsAddr + RX_mask); + return (wptr - rptr) & mask; +} + +static void MoxaPortTxDisable(struct moxa_port *port) +{ + moxafunc(port->tableAddr, FC_SetXoffState, Magic_code); +} + +static void MoxaPortTxEnable(struct moxa_port *port) +{ + moxafunc(port->tableAddr, FC_SetXonState, Magic_code); +} + +static int moxa_get_serial_info(struct moxa_port *info, + struct serial_struct __user *retinfo) +{ + struct serial_struct tmp = { + .type = info->type, + .line = info->port.tty->index, + .flags = info->port.flags, + .baud_base = 921600, + .close_delay = info->port.close_delay + }; + return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; +} + + +static int moxa_set_serial_info(struct moxa_port *info, + struct serial_struct __user *new_info) +{ + struct serial_struct new_serial; + + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) + return -EFAULT; + + if (new_serial.irq != 0 || new_serial.port != 0 || + new_serial.custom_divisor != 0 || + new_serial.baud_base != 921600) + return -EPERM; + + if (!capable(CAP_SYS_ADMIN)) { + if (((new_serial.flags & ~ASYNC_USR_MASK) != + (info->port.flags & ~ASYNC_USR_MASK))) + return -EPERM; + } else + info->port.close_delay = new_serial.close_delay * HZ / 100; + + new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS); + new_serial.flags |= (info->port.flags & ASYNC_FLAGS); + + MoxaSetFifo(info, new_serial.type == PORT_16550A); + + info->type = new_serial.type; + return 0; +} + + + +/***************************************************************************** + * Static local functions: * + *****************************************************************************/ + +static void MoxaSetFifo(struct moxa_port *port, int enable) +{ + void __iomem *ofsAddr = port->tableAddr; + + if (!enable) { + moxafunc(ofsAddr, FC_SetRxFIFOTrig, 0); + moxafunc(ofsAddr, FC_SetTxFIFOCnt, 1); + } else { + moxafunc(ofsAddr, FC_SetRxFIFOTrig, 3); + moxafunc(ofsAddr, FC_SetTxFIFOCnt, 16); + } +} diff --git a/drivers/tty/moxa.h b/drivers/tty/moxa.h new file mode 100644 index 000000000000..87d16ce57be7 --- /dev/null +++ b/drivers/tty/moxa.h @@ -0,0 +1,304 @@ +#ifndef MOXA_H_FILE +#define MOXA_H_FILE + +#define MOXA 0x400 +#define MOXA_GET_IQUEUE (MOXA + 1) /* get input buffered count */ +#define MOXA_GET_OQUEUE (MOXA + 2) /* get output buffered count */ +#define MOXA_GETDATACOUNT (MOXA + 23) +#define MOXA_GET_IOQUEUE (MOXA + 27) +#define MOXA_FLUSH_QUEUE (MOXA + 28) +#define MOXA_GETMSTATUS (MOXA + 65) + +/* + * System Configuration + */ + +#define Magic_code 0x404 + +/* + * for C218 BIOS initialization + */ +#define C218_ConfBase 0x800 +#define C218_status (C218_ConfBase + 0) /* BIOS running status */ +#define C218_diag (C218_ConfBase + 2) /* diagnostic status */ +#define C218_key (C218_ConfBase + 4) /* WORD (0x218 for C218) */ +#define C218DLoad_len (C218_ConfBase + 6) /* WORD */ +#define C218check_sum (C218_ConfBase + 8) /* BYTE */ +#define C218chksum_ok (C218_ConfBase + 0x0a) /* BYTE (1:ok) */ +#define C218_TestRx (C218_ConfBase + 0x10) /* 8 bytes for 8 ports */ +#define C218_TestTx (C218_ConfBase + 0x18) /* 8 bytes for 8 ports */ +#define C218_RXerr (C218_ConfBase + 0x20) /* 8 bytes for 8 ports */ +#define C218_ErrFlag (C218_ConfBase + 0x28) /* 8 bytes for 8 ports */ + +#define C218_LoadBuf 0x0F00 +#define C218_KeyCode 0x218 +#define CP204J_KeyCode 0x204 + +/* + * for C320 BIOS initialization + */ +#define C320_ConfBase 0x800 +#define C320_LoadBuf 0x0f00 +#define STS_init 0x05 /* for C320_status */ + +#define C320_status C320_ConfBase + 0 /* BIOS running status */ +#define C320_diag C320_ConfBase + 2 /* diagnostic status */ +#define C320_key C320_ConfBase + 4 /* WORD (0320H for C320) */ +#define C320DLoad_len C320_ConfBase + 6 /* WORD */ +#define C320check_sum C320_ConfBase + 8 /* WORD */ +#define C320chksum_ok C320_ConfBase + 0x0a /* WORD (1:ok) */ +#define C320bapi_len C320_ConfBase + 0x0c /* WORD */ +#define C320UART_no C320_ConfBase + 0x0e /* WORD */ + +#define C320_KeyCode 0x320 + +#define FixPage_addr 0x0000 /* starting addr of static page */ +#define DynPage_addr 0x2000 /* starting addr of dynamic page */ +#define C218_start 0x3000 /* starting addr of C218 BIOS prg */ +#define Control_reg 0x1ff0 /* select page and reset control */ +#define HW_reset 0x80 + +/* + * Function Codes + */ +#define FC_CardReset 0x80 +#define FC_ChannelReset 1 /* C320 firmware not supported */ +#define FC_EnableCH 2 +#define FC_DisableCH 3 +#define FC_SetParam 4 +#define FC_SetMode 5 +#define FC_SetRate 6 +#define FC_LineControl 7 +#define FC_LineStatus 8 +#define FC_XmitControl 9 +#define FC_FlushQueue 10 +#define FC_SendBreak 11 +#define FC_StopBreak 12 +#define FC_LoopbackON 13 +#define FC_LoopbackOFF 14 +#define FC_ClrIrqTable 15 +#define FC_SendXon 16 +#define FC_SetTermIrq 17 /* C320 firmware not supported */ +#define FC_SetCntIrq 18 /* C320 firmware not supported */ +#define FC_SetBreakIrq 19 +#define FC_SetLineIrq 20 +#define FC_SetFlowCtl 21 +#define FC_GenIrq 22 +#define FC_InCD180 23 +#define FC_OutCD180 24 +#define FC_InUARTreg 23 +#define FC_OutUARTreg 24 +#define FC_SetXonXoff 25 +#define FC_OutCD180CCR 26 +#define FC_ExtIQueue 27 +#define FC_ExtOQueue 28 +#define FC_ClrLineIrq 29 +#define FC_HWFlowCtl 30 +#define FC_GetClockRate 35 +#define FC_SetBaud 36 +#define FC_SetDataMode 41 +#define FC_GetCCSR 43 +#define FC_GetDataError 45 +#define FC_RxControl 50 +#define FC_ImmSend 51 +#define FC_SetXonState 52 +#define FC_SetXoffState 53 +#define FC_SetRxFIFOTrig 54 +#define FC_SetTxFIFOCnt 55 +#define FC_UnixRate 56 +#define FC_UnixResetTimer 57 + +#define RxFIFOTrig1 0 +#define RxFIFOTrig4 1 +#define RxFIFOTrig8 2 +#define RxFIFOTrig14 3 + +/* + * Dual-Ported RAM + */ +#define DRAM_global 0 +#define INT_data (DRAM_global + 0) +#define Config_base (DRAM_global + 0x108) + +#define IRQindex (INT_data + 0) +#define IRQpending (INT_data + 4) +#define IRQtable (INT_data + 8) + +/* + * Interrupt Status + */ +#define IntrRx 0x01 /* receiver data O.K. */ +#define IntrTx 0x02 /* transmit buffer empty */ +#define IntrFunc 0x04 /* function complete */ +#define IntrBreak 0x08 /* received break */ +#define IntrLine 0x10 /* line status change + for transmitter */ +#define IntrIntr 0x20 /* received INTR code */ +#define IntrQuit 0x40 /* received QUIT code */ +#define IntrEOF 0x80 /* received EOF code */ + +#define IntrRxTrigger 0x100 /* rx data count reach tigger value */ +#define IntrTxTrigger 0x200 /* tx data count below trigger value */ + +#define Magic_no (Config_base + 0) +#define Card_model_no (Config_base + 2) +#define Total_ports (Config_base + 4) +#define Module_cnt (Config_base + 8) +#define Module_no (Config_base + 10) +#define Timer_10ms (Config_base + 14) +#define Disable_IRQ (Config_base + 20) +#define TMS320_PORT1 (Config_base + 22) +#define TMS320_PORT2 (Config_base + 24) +#define TMS320_CLOCK (Config_base + 26) + +/* + * DATA BUFFER in DRAM + */ +#define Extern_table 0x400 /* Base address of the external table + (24 words * 64) total 3K bytes + (24 words * 128) total 6K bytes */ +#define Extern_size 0x60 /* 96 bytes */ +#define RXrptr 0x00 /* read pointer for RX buffer */ +#define RXwptr 0x02 /* write pointer for RX buffer */ +#define TXrptr 0x04 /* read pointer for TX buffer */ +#define TXwptr 0x06 /* write pointer for TX buffer */ +#define HostStat 0x08 /* IRQ flag and general flag */ +#define FlagStat 0x0A +#define FlowControl 0x0C /* B7 B6 B5 B4 B3 B2 B1 B0 */ + /* x x x x | | | | */ + /* | | | + CTS flow */ + /* | | +--- RTS flow */ + /* | +------ TX Xon/Xoff */ + /* +--------- RX Xon/Xoff */ +#define Break_cnt 0x0E /* received break count */ +#define CD180TXirq 0x10 /* if non-0: enable TX irq */ +#define RX_mask 0x12 +#define TX_mask 0x14 +#define Ofs_rxb 0x16 +#define Ofs_txb 0x18 +#define Page_rxb 0x1A +#define Page_txb 0x1C +#define EndPage_rxb 0x1E +#define EndPage_txb 0x20 +#define Data_error 0x22 +#define RxTrigger 0x28 +#define TxTrigger 0x2a + +#define rRXwptr 0x34 +#define Low_water 0x36 + +#define FuncCode 0x40 +#define FuncArg 0x42 +#define FuncArg1 0x44 + +#define C218rx_size 0x2000 /* 8K bytes */ +#define C218tx_size 0x8000 /* 32K bytes */ + +#define C218rx_mask (C218rx_size - 1) +#define C218tx_mask (C218tx_size - 1) + +#define C320p8rx_size 0x2000 +#define C320p8tx_size 0x8000 +#define C320p8rx_mask (C320p8rx_size - 1) +#define C320p8tx_mask (C320p8tx_size - 1) + +#define C320p16rx_size 0x2000 +#define C320p16tx_size 0x4000 +#define C320p16rx_mask (C320p16rx_size - 1) +#define C320p16tx_mask (C320p16tx_size - 1) + +#define C320p24rx_size 0x2000 +#define C320p24tx_size 0x2000 +#define C320p24rx_mask (C320p24rx_size - 1) +#define C320p24tx_mask (C320p24tx_size - 1) + +#define C320p32rx_size 0x1000 +#define C320p32tx_size 0x1000 +#define C320p32rx_mask (C320p32rx_size - 1) +#define C320p32tx_mask (C320p32tx_size - 1) + +#define Page_size 0x2000U +#define Page_mask (Page_size - 1) +#define C218rx_spage 3 +#define C218tx_spage 4 +#define C218rx_pageno 1 +#define C218tx_pageno 4 +#define C218buf_pageno 5 + +#define C320p8rx_spage 3 +#define C320p8tx_spage 4 +#define C320p8rx_pgno 1 +#define C320p8tx_pgno 4 +#define C320p8buf_pgno 5 + +#define C320p16rx_spage 3 +#define C320p16tx_spage 4 +#define C320p16rx_pgno 1 +#define C320p16tx_pgno 2 +#define C320p16buf_pgno 3 + +#define C320p24rx_spage 3 +#define C320p24tx_spage 4 +#define C320p24rx_pgno 1 +#define C320p24tx_pgno 1 +#define C320p24buf_pgno 2 + +#define C320p32rx_spage 3 +#define C320p32tx_ofs C320p32rx_size +#define C320p32tx_spage 3 +#define C320p32buf_pgno 1 + +/* + * Host Status + */ +#define WakeupRx 0x01 +#define WakeupTx 0x02 +#define WakeupBreak 0x08 +#define WakeupLine 0x10 +#define WakeupIntr 0x20 +#define WakeupQuit 0x40 +#define WakeupEOF 0x80 /* used in VTIME control */ +#define WakeupRxTrigger 0x100 +#define WakeupTxTrigger 0x200 +/* + * Flag status + */ +#define Rx_over 0x01 +#define Xoff_state 0x02 +#define Tx_flowOff 0x04 +#define Tx_enable 0x08 +#define CTS_state 0x10 +#define DSR_state 0x20 +#define DCD_state 0x80 +/* + * FlowControl + */ +#define CTS_FlowCtl 1 +#define RTS_FlowCtl 2 +#define Tx_FlowCtl 4 +#define Rx_FlowCtl 8 +#define IXM_IXANY 0x10 + +#define LowWater 128 + +#define DTR_ON 1 +#define RTS_ON 2 +#define CTS_ON 1 +#define DSR_ON 2 +#define DCD_ON 8 + +/* mode definition */ +#define MX_CS8 0x03 +#define MX_CS7 0x02 +#define MX_CS6 0x01 +#define MX_CS5 0x00 + +#define MX_STOP1 0x00 +#define MX_STOP15 0x04 +#define MX_STOP2 0x08 + +#define MX_PARNONE 0x00 +#define MX_PAREVEN 0x40 +#define MX_PARODD 0xC0 + +#endif diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c new file mode 100644 index 000000000000..d188f378684d --- /dev/null +++ b/drivers/tty/mxser.c @@ -0,0 +1,2757 @@ +/* + * mxser.c -- MOXA Smartio/Industio family multiport serial driver. + * + * Copyright (C) 1999-2006 Moxa Technologies (support@moxa.com). + * Copyright (C) 2006-2008 Jiri Slaby + * + * This code is loosely based on the 1.8 moxa driver which is based on + * Linux serial driver, written by Linus Torvalds, Theodore T'so and + * others. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Fed through a cleanup, indent and remove of non 2.6 code by Alan Cox + * . The original 1.8 code is available on + * www.moxa.com. + * - Fixed x86_64 cleanness + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "mxser.h" + +#define MXSER_VERSION "2.0.5" /* 1.14 */ +#define MXSERMAJOR 174 + +#define MXSER_BOARDS 4 /* Max. boards */ +#define MXSER_PORTS_PER_BOARD 8 /* Max. ports per board */ +#define MXSER_PORTS (MXSER_BOARDS * MXSER_PORTS_PER_BOARD) +#define MXSER_ISR_PASS_LIMIT 100 + +/*CheckIsMoxaMust return value*/ +#define MOXA_OTHER_UART 0x00 +#define MOXA_MUST_MU150_HWID 0x01 +#define MOXA_MUST_MU860_HWID 0x02 + +#define WAKEUP_CHARS 256 + +#define UART_MCR_AFE 0x20 +#define UART_LSR_SPECIAL 0x1E + +#define PCI_DEVICE_ID_POS104UL 0x1044 +#define PCI_DEVICE_ID_CB108 0x1080 +#define PCI_DEVICE_ID_CP102UF 0x1023 +#define PCI_DEVICE_ID_CP112UL 0x1120 +#define PCI_DEVICE_ID_CB114 0x1142 +#define PCI_DEVICE_ID_CP114UL 0x1143 +#define PCI_DEVICE_ID_CB134I 0x1341 +#define PCI_DEVICE_ID_CP138U 0x1380 + + +#define C168_ASIC_ID 1 +#define C104_ASIC_ID 2 +#define C102_ASIC_ID 0xB +#define CI132_ASIC_ID 4 +#define CI134_ASIC_ID 3 +#define CI104J_ASIC_ID 5 + +#define MXSER_HIGHBAUD 1 +#define MXSER_HAS2 2 + +/* This is only for PCI */ +static const struct { + int type; + int tx_fifo; + int rx_fifo; + int xmit_fifo_size; + int rx_high_water; + int rx_trigger; + int rx_low_water; + long max_baud; +} Gpci_uart_info[] = { + {MOXA_OTHER_UART, 16, 16, 16, 14, 14, 1, 921600L}, + {MOXA_MUST_MU150_HWID, 64, 64, 64, 48, 48, 16, 230400L}, + {MOXA_MUST_MU860_HWID, 128, 128, 128, 96, 96, 32, 921600L} +}; +#define UART_INFO_NUM ARRAY_SIZE(Gpci_uart_info) + +struct mxser_cardinfo { + char *name; + unsigned int nports; + unsigned int flags; +}; + +static const struct mxser_cardinfo mxser_cards[] = { +/* 0*/ { "C168 series", 8, }, + { "C104 series", 4, }, + { "CI-104J series", 4, }, + { "C168H/PCI series", 8, }, + { "C104H/PCI series", 4, }, +/* 5*/ { "C102 series", 4, MXSER_HAS2 }, /* C102-ISA */ + { "CI-132 series", 4, MXSER_HAS2 }, + { "CI-134 series", 4, }, + { "CP-132 series", 2, }, + { "CP-114 series", 4, }, +/*10*/ { "CT-114 series", 4, }, + { "CP-102 series", 2, MXSER_HIGHBAUD }, + { "CP-104U series", 4, }, + { "CP-168U series", 8, }, + { "CP-132U series", 2, }, +/*15*/ { "CP-134U series", 4, }, + { "CP-104JU series", 4, }, + { "Moxa UC7000 Serial", 8, }, /* RC7000 */ + { "CP-118U series", 8, }, + { "CP-102UL series", 2, }, +/*20*/ { "CP-102U series", 2, }, + { "CP-118EL series", 8, }, + { "CP-168EL series", 8, }, + { "CP-104EL series", 4, }, + { "CB-108 series", 8, }, +/*25*/ { "CB-114 series", 4, }, + { "CB-134I series", 4, }, + { "CP-138U series", 8, }, + { "POS-104UL series", 4, }, + { "CP-114UL series", 4, }, +/*30*/ { "CP-102UF series", 2, }, + { "CP-112UL series", 2, }, +}; + +/* driver_data correspond to the lines in the structure above + see also ISA probe function before you change something */ +static struct pci_device_id mxser_pcibrds[] = { + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C168), .driver_data = 3 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_C104), .driver_data = 4 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132), .driver_data = 8 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114), .driver_data = 9 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CT114), .driver_data = 10 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102), .driver_data = 11 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104U), .driver_data = 12 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168U), .driver_data = 13 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132U), .driver_data = 14 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134U), .driver_data = 15 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104JU),.driver_data = 16 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_RC7000), .driver_data = 17 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118U), .driver_data = 18 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102UL),.driver_data = 19 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102U), .driver_data = 20 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL),.driver_data = 21 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL),.driver_data = 22 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL),.driver_data = 23 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB108), .driver_data = 24 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB114), .driver_data = 25 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CB134I), .driver_data = 26 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP138U), .driver_data = 27 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_POS104UL), .driver_data = 28 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP114UL), .driver_data = 29 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP102UF), .driver_data = 30 }, + { PCI_VDEVICE(MOXA, PCI_DEVICE_ID_CP112UL), .driver_data = 31 }, + { } +}; +MODULE_DEVICE_TABLE(pci, mxser_pcibrds); + +static unsigned long ioaddr[MXSER_BOARDS]; +static int ttymajor = MXSERMAJOR; + +/* Variables for insmod */ + +MODULE_AUTHOR("Casper Yang"); +MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); +module_param_array(ioaddr, ulong, NULL, 0); +MODULE_PARM_DESC(ioaddr, "ISA io addresses to look for a moxa board"); +module_param(ttymajor, int, 0); +MODULE_LICENSE("GPL"); + +struct mxser_log { + int tick; + unsigned long rxcnt[MXSER_PORTS]; + unsigned long txcnt[MXSER_PORTS]; +}; + +struct mxser_mon { + unsigned long rxcnt; + unsigned long txcnt; + unsigned long up_rxcnt; + unsigned long up_txcnt; + int modem_status; + unsigned char hold_reason; +}; + +struct mxser_mon_ext { + unsigned long rx_cnt[32]; + unsigned long tx_cnt[32]; + unsigned long up_rxcnt[32]; + unsigned long up_txcnt[32]; + int modem_status[32]; + + long baudrate[32]; + int databits[32]; + int stopbits[32]; + int parity[32]; + int flowctrl[32]; + int fifo[32]; + int iftype[32]; +}; + +struct mxser_board; + +struct mxser_port { + struct tty_port port; + struct mxser_board *board; + + unsigned long ioaddr; + unsigned long opmode_ioaddr; + int max_baud; + + int rx_high_water; + int rx_trigger; /* Rx fifo trigger level */ + int rx_low_water; + int baud_base; /* max. speed */ + int type; /* UART type */ + + int x_char; /* xon/xoff character */ + int IER; /* Interrupt Enable Register */ + int MCR; /* Modem control register */ + + unsigned char stop_rx; + unsigned char ldisc_stop_rx; + + int custom_divisor; + unsigned char err_shadow; + + struct async_icount icount; /* kernel counters for 4 input interrupts */ + int timeout; + + int read_status_mask; + int ignore_status_mask; + int xmit_fifo_size; + int xmit_head; + int xmit_tail; + int xmit_cnt; + + struct ktermios normal_termios; + + struct mxser_mon mon_data; + + spinlock_t slock; +}; + +struct mxser_board { + unsigned int idx; + int irq; + const struct mxser_cardinfo *info; + unsigned long vector; + unsigned long vector_mask; + + int chip_flag; + int uart_type; + + struct mxser_port ports[MXSER_PORTS_PER_BOARD]; +}; + +struct mxser_mstatus { + tcflag_t cflag; + int cts; + int dsr; + int ri; + int dcd; +}; + +static struct mxser_board mxser_boards[MXSER_BOARDS]; +static struct tty_driver *mxvar_sdriver; +static struct mxser_log mxvar_log; +static int mxser_set_baud_method[MXSER_PORTS + 1]; + +static void mxser_enable_must_enchance_mode(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr |= MOXA_MUST_EFR_EFRB_ENABLE; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +#ifdef CONFIG_PCI +static void mxser_disable_must_enchance_mode(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_EFRB_ENABLE; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} +#endif + +static void mxser_set_must_xon1_value(unsigned long baseio, u8 value) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK0; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(value, baseio + MOXA_MUST_XON1_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_set_must_xoff1_value(unsigned long baseio, u8 value) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK0; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(value, baseio + MOXA_MUST_XOFF1_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_set_must_fifo_value(struct mxser_port *info) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(info->ioaddr + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, info->ioaddr + UART_LCR); + + efr = inb(info->ioaddr + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK1; + + outb(efr, info->ioaddr + MOXA_MUST_EFR_REGISTER); + outb((u8)info->rx_high_water, info->ioaddr + MOXA_MUST_RBRTH_REGISTER); + outb((u8)info->rx_trigger, info->ioaddr + MOXA_MUST_RBRTI_REGISTER); + outb((u8)info->rx_low_water, info->ioaddr + MOXA_MUST_RBRTL_REGISTER); + outb(oldlcr, info->ioaddr + UART_LCR); +} + +static void mxser_set_must_enum_value(unsigned long baseio, u8 value) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK2; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(value, baseio + MOXA_MUST_ENUM_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +#ifdef CONFIG_PCI +static void mxser_get_must_hardware_id(unsigned long baseio, u8 *pId) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_BANK_MASK; + efr |= MOXA_MUST_EFR_BANK2; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + *pId = inb(baseio + MOXA_MUST_HWID_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} +#endif + +static void SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_MASK; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_enable_must_tx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_TX_MASK; + efr |= MOXA_MUST_EFR_SF_TX1; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_disable_must_tx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_TX_MASK; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_enable_must_rx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_RX_MASK; + efr |= MOXA_MUST_EFR_SF_RX1; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +static void mxser_disable_must_rx_software_flow_control(unsigned long baseio) +{ + u8 oldlcr; + u8 efr; + + oldlcr = inb(baseio + UART_LCR); + outb(MOXA_MUST_ENTER_ENCHANCE, baseio + UART_LCR); + + efr = inb(baseio + MOXA_MUST_EFR_REGISTER); + efr &= ~MOXA_MUST_EFR_SF_RX_MASK; + + outb(efr, baseio + MOXA_MUST_EFR_REGISTER); + outb(oldlcr, baseio + UART_LCR); +} + +#ifdef CONFIG_PCI +static int __devinit CheckIsMoxaMust(unsigned long io) +{ + u8 oldmcr, hwid; + int i; + + outb(0, io + UART_LCR); + mxser_disable_must_enchance_mode(io); + oldmcr = inb(io + UART_MCR); + outb(0, io + UART_MCR); + mxser_set_must_xon1_value(io, 0x11); + if ((hwid = inb(io + UART_MCR)) != 0) { + outb(oldmcr, io + UART_MCR); + return MOXA_OTHER_UART; + } + + mxser_get_must_hardware_id(io, &hwid); + for (i = 1; i < UART_INFO_NUM; i++) { /* 0 = OTHER_UART */ + if (hwid == Gpci_uart_info[i].type) + return (int)hwid; + } + return MOXA_OTHER_UART; +} +#endif + +static void process_txrx_fifo(struct mxser_port *info) +{ + int i; + + if ((info->type == PORT_16450) || (info->type == PORT_8250)) { + info->rx_trigger = 1; + info->rx_high_water = 1; + info->rx_low_water = 1; + info->xmit_fifo_size = 1; + } else + for (i = 0; i < UART_INFO_NUM; i++) + if (info->board->chip_flag == Gpci_uart_info[i].type) { + info->rx_trigger = Gpci_uart_info[i].rx_trigger; + info->rx_low_water = Gpci_uart_info[i].rx_low_water; + info->rx_high_water = Gpci_uart_info[i].rx_high_water; + info->xmit_fifo_size = Gpci_uart_info[i].xmit_fifo_size; + break; + } +} + +static unsigned char mxser_get_msr(int baseaddr, int mode, int port) +{ + static unsigned char mxser_msr[MXSER_PORTS + 1]; + unsigned char status = 0; + + status = inb(baseaddr + UART_MSR); + + mxser_msr[port] &= 0x0F; + mxser_msr[port] |= status; + status = mxser_msr[port]; + if (mode) + mxser_msr[port] = 0; + + return status; +} + +static int mxser_carrier_raised(struct tty_port *port) +{ + struct mxser_port *mp = container_of(port, struct mxser_port, port); + return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0; +} + +static void mxser_dtr_rts(struct tty_port *port, int on) +{ + struct mxser_port *mp = container_of(port, struct mxser_port, port); + unsigned long flags; + + spin_lock_irqsave(&mp->slock, flags); + if (on) + outb(inb(mp->ioaddr + UART_MCR) | + UART_MCR_DTR | UART_MCR_RTS, mp->ioaddr + UART_MCR); + else + outb(inb(mp->ioaddr + UART_MCR)&~(UART_MCR_DTR | UART_MCR_RTS), + mp->ioaddr + UART_MCR); + spin_unlock_irqrestore(&mp->slock, flags); +} + +static int mxser_set_baud(struct tty_struct *tty, long newspd) +{ + struct mxser_port *info = tty->driver_data; + int quot = 0, baud; + unsigned char cval; + + if (!info->ioaddr) + return -1; + + if (newspd > info->max_baud) + return -1; + + if (newspd == 134) { + quot = 2 * info->baud_base / 269; + tty_encode_baud_rate(tty, 134, 134); + } else if (newspd) { + quot = info->baud_base / newspd; + if (quot == 0) + quot = 1; + baud = info->baud_base/quot; + tty_encode_baud_rate(tty, baud, baud); + } else { + quot = 0; + } + + info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base); + info->timeout += HZ / 50; /* Add .02 seconds of slop */ + + if (quot) { + info->MCR |= UART_MCR_DTR; + outb(info->MCR, info->ioaddr + UART_MCR); + } else { + info->MCR &= ~UART_MCR_DTR; + outb(info->MCR, info->ioaddr + UART_MCR); + return 0; + } + + cval = inb(info->ioaddr + UART_LCR); + + outb(cval | UART_LCR_DLAB, info->ioaddr + UART_LCR); /* set DLAB */ + + outb(quot & 0xff, info->ioaddr + UART_DLL); /* LS of divisor */ + outb(quot >> 8, info->ioaddr + UART_DLM); /* MS of divisor */ + outb(cval, info->ioaddr + UART_LCR); /* reset DLAB */ + +#ifdef BOTHER + if (C_BAUD(tty) == BOTHER) { + quot = info->baud_base % newspd; + quot *= 8; + if (quot % newspd > newspd / 2) { + quot /= newspd; + quot++; + } else + quot /= newspd; + + mxser_set_must_enum_value(info->ioaddr, quot); + } else +#endif + mxser_set_must_enum_value(info->ioaddr, 0); + + return 0; +} + +/* + * This routine is called to set the UART divisor registers to match + * the specified baud rate for a serial port. + */ +static int mxser_change_speed(struct tty_struct *tty, + struct ktermios *old_termios) +{ + struct mxser_port *info = tty->driver_data; + unsigned cflag, cval, fcr; + int ret = 0; + unsigned char status; + + cflag = tty->termios->c_cflag; + if (!info->ioaddr) + return ret; + + if (mxser_set_baud_method[tty->index] == 0) + mxser_set_baud(tty, tty_get_baud_rate(tty)); + + /* byte size and parity */ + switch (cflag & CSIZE) { + case CS5: + cval = 0x00; + break; + case CS6: + cval = 0x01; + break; + case CS7: + cval = 0x02; + break; + case CS8: + cval = 0x03; + break; + default: + cval = 0x00; + break; /* too keep GCC shut... */ + } + if (cflag & CSTOPB) + cval |= 0x04; + if (cflag & PARENB) + cval |= UART_LCR_PARITY; + if (!(cflag & PARODD)) + cval |= UART_LCR_EPAR; + if (cflag & CMSPAR) + cval |= UART_LCR_SPAR; + + if ((info->type == PORT_8250) || (info->type == PORT_16450)) { + if (info->board->chip_flag) { + fcr = UART_FCR_ENABLE_FIFO; + fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; + mxser_set_must_fifo_value(info); + } else + fcr = 0; + } else { + fcr = UART_FCR_ENABLE_FIFO; + if (info->board->chip_flag) { + fcr |= MOXA_MUST_FCR_GDA_MODE_ENABLE; + mxser_set_must_fifo_value(info); + } else { + switch (info->rx_trigger) { + case 1: + fcr |= UART_FCR_TRIGGER_1; + break; + case 4: + fcr |= UART_FCR_TRIGGER_4; + break; + case 8: + fcr |= UART_FCR_TRIGGER_8; + break; + default: + fcr |= UART_FCR_TRIGGER_14; + break; + } + } + } + + /* CTS flow control flag and modem status interrupts */ + info->IER &= ~UART_IER_MSI; + info->MCR &= ~UART_MCR_AFE; + if (cflag & CRTSCTS) { + info->port.flags |= ASYNC_CTS_FLOW; + info->IER |= UART_IER_MSI; + if ((info->type == PORT_16550A) || (info->board->chip_flag)) { + info->MCR |= UART_MCR_AFE; + } else { + status = inb(info->ioaddr + UART_MSR); + if (tty->hw_stopped) { + if (status & UART_MSR_CTS) { + tty->hw_stopped = 0; + if (info->type != PORT_16550A && + !info->board->chip_flag) { + outb(info->IER & ~UART_IER_THRI, + info->ioaddr + + UART_IER); + info->IER |= UART_IER_THRI; + outb(info->IER, info->ioaddr + + UART_IER); + } + tty_wakeup(tty); + } + } else { + if (!(status & UART_MSR_CTS)) { + tty->hw_stopped = 1; + if ((info->type != PORT_16550A) && + (!info->board->chip_flag)) { + info->IER &= ~UART_IER_THRI; + outb(info->IER, info->ioaddr + + UART_IER); + } + } + } + } + } else { + info->port.flags &= ~ASYNC_CTS_FLOW; + } + outb(info->MCR, info->ioaddr + UART_MCR); + if (cflag & CLOCAL) { + info->port.flags &= ~ASYNC_CHECK_CD; + } else { + info->port.flags |= ASYNC_CHECK_CD; + info->IER |= UART_IER_MSI; + } + outb(info->IER, info->ioaddr + UART_IER); + + /* + * Set up parity check flag + */ + info->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; + if (I_INPCK(tty)) + info->read_status_mask |= UART_LSR_FE | UART_LSR_PE; + if (I_BRKINT(tty) || I_PARMRK(tty)) + info->read_status_mask |= UART_LSR_BI; + + info->ignore_status_mask = 0; + + if (I_IGNBRK(tty)) { + info->ignore_status_mask |= UART_LSR_BI; + info->read_status_mask |= UART_LSR_BI; + /* + * If we're ignore parity and break indicators, ignore + * overruns too. (For real raw support). + */ + if (I_IGNPAR(tty)) { + info->ignore_status_mask |= + UART_LSR_OE | + UART_LSR_PE | + UART_LSR_FE; + info->read_status_mask |= + UART_LSR_OE | + UART_LSR_PE | + UART_LSR_FE; + } + } + if (info->board->chip_flag) { + mxser_set_must_xon1_value(info->ioaddr, START_CHAR(tty)); + mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(tty)); + if (I_IXON(tty)) { + mxser_enable_must_rx_software_flow_control( + info->ioaddr); + } else { + mxser_disable_must_rx_software_flow_control( + info->ioaddr); + } + if (I_IXOFF(tty)) { + mxser_enable_must_tx_software_flow_control( + info->ioaddr); + } else { + mxser_disable_must_tx_software_flow_control( + info->ioaddr); + } + } + + + outb(fcr, info->ioaddr + UART_FCR); /* set fcr */ + outb(cval, info->ioaddr + UART_LCR); + + return ret; +} + +static void mxser_check_modem_status(struct tty_struct *tty, + struct mxser_port *port, int status) +{ + /* update input line counters */ + if (status & UART_MSR_TERI) + port->icount.rng++; + if (status & UART_MSR_DDSR) + port->icount.dsr++; + if (status & UART_MSR_DDCD) + port->icount.dcd++; + if (status & UART_MSR_DCTS) + port->icount.cts++; + port->mon_data.modem_status = status; + wake_up_interruptible(&port->port.delta_msr_wait); + + if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) { + if (status & UART_MSR_DCD) + wake_up_interruptible(&port->port.open_wait); + } + + if (port->port.flags & ASYNC_CTS_FLOW) { + if (tty->hw_stopped) { + if (status & UART_MSR_CTS) { + tty->hw_stopped = 0; + + if ((port->type != PORT_16550A) && + (!port->board->chip_flag)) { + outb(port->IER & ~UART_IER_THRI, + port->ioaddr + UART_IER); + port->IER |= UART_IER_THRI; + outb(port->IER, port->ioaddr + + UART_IER); + } + tty_wakeup(tty); + } + } else { + if (!(status & UART_MSR_CTS)) { + tty->hw_stopped = 1; + if (port->type != PORT_16550A && + !port->board->chip_flag) { + port->IER &= ~UART_IER_THRI; + outb(port->IER, port->ioaddr + + UART_IER); + } + } + } + } +} + +static int mxser_activate(struct tty_port *port, struct tty_struct *tty) +{ + struct mxser_port *info = container_of(port, struct mxser_port, port); + unsigned long page; + unsigned long flags; + + page = __get_free_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + spin_lock_irqsave(&info->slock, flags); + + if (!info->ioaddr || !info->type) { + set_bit(TTY_IO_ERROR, &tty->flags); + free_page(page); + spin_unlock_irqrestore(&info->slock, flags); + return 0; + } + info->port.xmit_buf = (unsigned char *) page; + + /* + * Clear the FIFO buffers and disable them + * (they will be reenabled in mxser_change_speed()) + */ + if (info->board->chip_flag) + outb((UART_FCR_CLEAR_RCVR | + UART_FCR_CLEAR_XMIT | + MOXA_MUST_FCR_GDA_MODE_ENABLE), info->ioaddr + UART_FCR); + else + outb((UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), + info->ioaddr + UART_FCR); + + /* + * At this point there's no way the LSR could still be 0xFF; + * if it is, then bail out, because there's likely no UART + * here. + */ + if (inb(info->ioaddr + UART_LSR) == 0xff) { + spin_unlock_irqrestore(&info->slock, flags); + if (capable(CAP_SYS_ADMIN)) { + set_bit(TTY_IO_ERROR, &tty->flags); + return 0; + } else + return -ENODEV; + } + + /* + * Clear the interrupt registers. + */ + (void) inb(info->ioaddr + UART_LSR); + (void) inb(info->ioaddr + UART_RX); + (void) inb(info->ioaddr + UART_IIR); + (void) inb(info->ioaddr + UART_MSR); + + /* + * Now, initialize the UART + */ + outb(UART_LCR_WLEN8, info->ioaddr + UART_LCR); /* reset DLAB */ + info->MCR = UART_MCR_DTR | UART_MCR_RTS; + outb(info->MCR, info->ioaddr + UART_MCR); + + /* + * Finally, enable interrupts + */ + info->IER = UART_IER_MSI | UART_IER_RLSI | UART_IER_RDI; + + if (info->board->chip_flag) + info->IER |= MOXA_MUST_IER_EGDAI; + outb(info->IER, info->ioaddr + UART_IER); /* enable interrupts */ + + /* + * And clear the interrupt registers again for luck. + */ + (void) inb(info->ioaddr + UART_LSR); + (void) inb(info->ioaddr + UART_RX); + (void) inb(info->ioaddr + UART_IIR); + (void) inb(info->ioaddr + UART_MSR); + + clear_bit(TTY_IO_ERROR, &tty->flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + + /* + * and set the speed of the serial port + */ + mxser_change_speed(tty, NULL); + spin_unlock_irqrestore(&info->slock, flags); + + return 0; +} + +/* + * This routine will shutdown a serial port + */ +static void mxser_shutdown_port(struct tty_port *port) +{ + struct mxser_port *info = container_of(port, struct mxser_port, port); + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + + /* + * clear delta_msr_wait queue to avoid mem leaks: we may free the irq + * here so the queue might never be waken up + */ + wake_up_interruptible(&info->port.delta_msr_wait); + + /* + * Free the xmit buffer, if necessary + */ + if (info->port.xmit_buf) { + free_page((unsigned long) info->port.xmit_buf); + info->port.xmit_buf = NULL; + } + + info->IER = 0; + outb(0x00, info->ioaddr + UART_IER); + + /* clear Rx/Tx FIFO's */ + if (info->board->chip_flag) + outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | + MOXA_MUST_FCR_GDA_MODE_ENABLE, + info->ioaddr + UART_FCR); + else + outb(UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT, + info->ioaddr + UART_FCR); + + /* read data port to reset things */ + (void) inb(info->ioaddr + UART_RX); + + + if (info->board->chip_flag) + SET_MOXA_MUST_NO_SOFTWARE_FLOW_CONTROL(info->ioaddr); + + spin_unlock_irqrestore(&info->slock, flags); +} + +/* + * This routine is called whenever a serial port is opened. It + * enables interrupts for a serial port, linking in its async structure into + * the IRQ chain. It also performs the serial-specific + * initialization for the tty structure. + */ +static int mxser_open(struct tty_struct *tty, struct file *filp) +{ + struct mxser_port *info; + int line; + + line = tty->index; + if (line == MXSER_PORTS) + return 0; + if (line < 0 || line > MXSER_PORTS) + return -ENODEV; + info = &mxser_boards[line / MXSER_PORTS_PER_BOARD].ports[line % MXSER_PORTS_PER_BOARD]; + if (!info->ioaddr) + return -ENODEV; + + tty->driver_data = info; + return tty_port_open(&info->port, tty, filp); +} + +static void mxser_flush_buffer(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + char fcr; + unsigned long flags; + + + spin_lock_irqsave(&info->slock, flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + + fcr = inb(info->ioaddr + UART_FCR); + outb((fcr | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT), + info->ioaddr + UART_FCR); + outb(fcr, info->ioaddr + UART_FCR); + + spin_unlock_irqrestore(&info->slock, flags); + + tty_wakeup(tty); +} + + +static void mxser_close_port(struct tty_port *port) +{ + struct mxser_port *info = container_of(port, struct mxser_port, port); + unsigned long timeout; + /* + * At this point we stop accepting input. To do this, we + * disable the receive line status interrupts, and tell the + * interrupt driver to stop checking the data ready bit in the + * line status register. + */ + info->IER &= ~UART_IER_RLSI; + if (info->board->chip_flag) + info->IER &= ~MOXA_MUST_RECV_ISR; + + outb(info->IER, info->ioaddr + UART_IER); + /* + * Before we drop DTR, make sure the UART transmitter + * has completely drained; this is especially + * important if there is a transmit FIFO! + */ + timeout = jiffies + HZ; + while (!(inb(info->ioaddr + UART_LSR) & UART_LSR_TEMT)) { + schedule_timeout_interruptible(5); + if (time_after(jiffies, timeout)) + break; + } +} + +/* + * This routine is called when the serial port gets closed. First, we + * wait for the last remaining data to be sent. Then, we unlink its + * async structure from the interrupt chain if necessary, and we free + * that IRQ if nothing is left in the chain. + */ +static void mxser_close(struct tty_struct *tty, struct file *filp) +{ + struct mxser_port *info = tty->driver_data; + struct tty_port *port = &info->port; + + if (tty->index == MXSER_PORTS || info == NULL) + return; + if (tty_port_close_start(port, tty, filp) == 0) + return; + mutex_lock(&port->mutex); + mxser_close_port(port); + mxser_flush_buffer(tty); + mxser_shutdown_port(port); + clear_bit(ASYNCB_INITIALIZED, &port->flags); + mutex_unlock(&port->mutex); + /* Right now the tty_port set is done outside of the close_end helper + as we don't yet have everyone using refcounts */ + tty_port_close_end(port, tty); + tty_port_tty_set(port, NULL); +} + +static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + int c, total = 0; + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + if (!info->port.xmit_buf) + return 0; + + while (1) { + c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, + SERIAL_XMIT_SIZE - info->xmit_head)); + if (c <= 0) + break; + + memcpy(info->port.xmit_buf + info->xmit_head, buf, c); + spin_lock_irqsave(&info->slock, flags); + info->xmit_head = (info->xmit_head + c) & + (SERIAL_XMIT_SIZE - 1); + info->xmit_cnt += c; + spin_unlock_irqrestore(&info->slock, flags); + + buf += c; + count -= c; + total += c; + } + + if (info->xmit_cnt && !tty->stopped) { + if (!tty->hw_stopped || + (info->type == PORT_16550A) || + (info->board->chip_flag)) { + spin_lock_irqsave(&info->slock, flags); + outb(info->IER & ~UART_IER_THRI, info->ioaddr + + UART_IER); + info->IER |= UART_IER_THRI; + outb(info->IER, info->ioaddr + UART_IER); + spin_unlock_irqrestore(&info->slock, flags); + } + } + return total; +} + +static int mxser_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + if (!info->port.xmit_buf) + return 0; + + if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) + return 0; + + spin_lock_irqsave(&info->slock, flags); + info->port.xmit_buf[info->xmit_head++] = ch; + info->xmit_head &= SERIAL_XMIT_SIZE - 1; + info->xmit_cnt++; + spin_unlock_irqrestore(&info->slock, flags); + if (!tty->stopped) { + if (!tty->hw_stopped || + (info->type == PORT_16550A) || + info->board->chip_flag) { + spin_lock_irqsave(&info->slock, flags); + outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); + info->IER |= UART_IER_THRI; + outb(info->IER, info->ioaddr + UART_IER); + spin_unlock_irqrestore(&info->slock, flags); + } + } + return 1; +} + + +static void mxser_flush_chars(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + if (info->xmit_cnt <= 0 || tty->stopped || !info->port.xmit_buf || + (tty->hw_stopped && info->type != PORT_16550A && + !info->board->chip_flag)) + return; + + spin_lock_irqsave(&info->slock, flags); + + outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); + info->IER |= UART_IER_THRI; + outb(info->IER, info->ioaddr + UART_IER); + + spin_unlock_irqrestore(&info->slock, flags); +} + +static int mxser_write_room(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + int ret; + + ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; + return ret < 0 ? 0 : ret; +} + +static int mxser_chars_in_buffer(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + return info->xmit_cnt; +} + +/* + * ------------------------------------------------------------ + * friends of mxser_ioctl() + * ------------------------------------------------------------ + */ +static int mxser_get_serial_info(struct tty_struct *tty, + struct serial_struct __user *retinfo) +{ + struct mxser_port *info = tty->driver_data; + struct serial_struct tmp = { + .type = info->type, + .line = tty->index, + .port = info->ioaddr, + .irq = info->board->irq, + .flags = info->port.flags, + .baud_base = info->baud_base, + .close_delay = info->port.close_delay, + .closing_wait = info->port.closing_wait, + .custom_divisor = info->custom_divisor, + .hub6 = 0 + }; + if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) + return -EFAULT; + return 0; +} + +static int mxser_set_serial_info(struct tty_struct *tty, + struct serial_struct __user *new_info) +{ + struct mxser_port *info = tty->driver_data; + struct tty_port *port = &info->port; + struct serial_struct new_serial; + speed_t baud; + unsigned long sl_flags; + unsigned int flags; + int retval = 0; + + if (!new_info || !info->ioaddr) + return -ENODEV; + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) + return -EFAULT; + + if (new_serial.irq != info->board->irq || + new_serial.port != info->ioaddr) + return -EINVAL; + + flags = port->flags & ASYNC_SPD_MASK; + + if (!capable(CAP_SYS_ADMIN)) { + if ((new_serial.baud_base != info->baud_base) || + (new_serial.close_delay != info->port.close_delay) || + ((new_serial.flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) + return -EPERM; + info->port.flags = ((info->port.flags & ~ASYNC_USR_MASK) | + (new_serial.flags & ASYNC_USR_MASK)); + } else { + /* + * OK, past this point, all the error checking has been done. + * At this point, we start making changes..... + */ + port->flags = ((port->flags & ~ASYNC_FLAGS) | + (new_serial.flags & ASYNC_FLAGS)); + port->close_delay = new_serial.close_delay * HZ / 100; + port->closing_wait = new_serial.closing_wait * HZ / 100; + tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0; + if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && + (new_serial.baud_base != info->baud_base || + new_serial.custom_divisor != + info->custom_divisor)) { + if (new_serial.custom_divisor == 0) + return -EINVAL; + baud = new_serial.baud_base / new_serial.custom_divisor; + tty_encode_baud_rate(tty, baud, baud); + } + } + + info->type = new_serial.type; + + process_txrx_fifo(info); + + if (test_bit(ASYNCB_INITIALIZED, &port->flags)) { + if (flags != (port->flags & ASYNC_SPD_MASK)) { + spin_lock_irqsave(&info->slock, sl_flags); + mxser_change_speed(tty, NULL); + spin_unlock_irqrestore(&info->slock, sl_flags); + } + } else { + retval = mxser_activate(port, tty); + if (retval == 0) + set_bit(ASYNCB_INITIALIZED, &port->flags); + } + return retval; +} + +/* + * mxser_get_lsr_info - get line status register info + * + * Purpose: Let user call ioctl() to get info when the UART physically + * is emptied. On bus types like RS485, the transmitter must + * release the bus after transmitting. This must be done when + * the transmit shift register is empty, not be done when the + * transmit holding register is empty. This functionality + * allows an RS485 driver to be written in user space. + */ +static int mxser_get_lsr_info(struct mxser_port *info, + unsigned int __user *value) +{ + unsigned char status; + unsigned int result; + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + status = inb(info->ioaddr + UART_LSR); + spin_unlock_irqrestore(&info->slock, flags); + result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); + return put_user(result, value); +} + +static int mxser_tiocmget(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + unsigned char control, status; + unsigned long flags; + + + if (tty->index == MXSER_PORTS) + return -ENOIOCTLCMD; + if (test_bit(TTY_IO_ERROR, &tty->flags)) + return -EIO; + + control = info->MCR; + + spin_lock_irqsave(&info->slock, flags); + status = inb(info->ioaddr + UART_MSR); + if (status & UART_MSR_ANY_DELTA) + mxser_check_modem_status(tty, info, status); + spin_unlock_irqrestore(&info->slock, flags); + return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) | + ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) | + ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) | + ((status & UART_MSR_RI) ? TIOCM_RNG : 0) | + ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) | + ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); +} + +static int mxser_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + + if (tty->index == MXSER_PORTS) + return -ENOIOCTLCMD; + if (test_bit(TTY_IO_ERROR, &tty->flags)) + return -EIO; + + spin_lock_irqsave(&info->slock, flags); + + if (set & TIOCM_RTS) + info->MCR |= UART_MCR_RTS; + if (set & TIOCM_DTR) + info->MCR |= UART_MCR_DTR; + + if (clear & TIOCM_RTS) + info->MCR &= ~UART_MCR_RTS; + if (clear & TIOCM_DTR) + info->MCR &= ~UART_MCR_DTR; + + outb(info->MCR, info->ioaddr + UART_MCR); + spin_unlock_irqrestore(&info->slock, flags); + return 0; +} + +static int __init mxser_program_mode(int port) +{ + int id, i, j, n; + + outb(0, port); + outb(0, port); + outb(0, port); + (void)inb(port); + (void)inb(port); + outb(0, port); + (void)inb(port); + + id = inb(port + 1) & 0x1F; + if ((id != C168_ASIC_ID) && + (id != C104_ASIC_ID) && + (id != C102_ASIC_ID) && + (id != CI132_ASIC_ID) && + (id != CI134_ASIC_ID) && + (id != CI104J_ASIC_ID)) + return -1; + for (i = 0, j = 0; i < 4; i++) { + n = inb(port + 2); + if (n == 'M') { + j = 1; + } else if ((j == 1) && (n == 1)) { + j = 2; + break; + } else + j = 0; + } + if (j != 2) + id = -2; + return id; +} + +static void __init mxser_normal_mode(int port) +{ + int i, n; + + outb(0xA5, port + 1); + outb(0x80, port + 3); + outb(12, port + 0); /* 9600 bps */ + outb(0, port + 1); + outb(0x03, port + 3); /* 8 data bits */ + outb(0x13, port + 4); /* loop back mode */ + for (i = 0; i < 16; i++) { + n = inb(port + 5); + if ((n & 0x61) == 0x60) + break; + if ((n & 1) == 1) + (void)inb(port); + } + outb(0x00, port + 4); +} + +#define CHIP_SK 0x01 /* Serial Data Clock in Eprom */ +#define CHIP_DO 0x02 /* Serial Data Output in Eprom */ +#define CHIP_CS 0x04 /* Serial Chip Select in Eprom */ +#define CHIP_DI 0x08 /* Serial Data Input in Eprom */ +#define EN_CCMD 0x000 /* Chip's command register */ +#define EN0_RSARLO 0x008 /* Remote start address reg 0 */ +#define EN0_RSARHI 0x009 /* Remote start address reg 1 */ +#define EN0_RCNTLO 0x00A /* Remote byte count reg WR */ +#define EN0_RCNTHI 0x00B /* Remote byte count reg WR */ +#define EN0_DCFG 0x00E /* Data configuration reg WR */ +#define EN0_PORT 0x010 /* Rcv missed frame error counter RD */ +#define ENC_PAGE0 0x000 /* Select page 0 of chip registers */ +#define ENC_PAGE3 0x0C0 /* Select page 3 of chip registers */ +static int __init mxser_read_register(int port, unsigned short *regs) +{ + int i, k, value, id; + unsigned int j; + + id = mxser_program_mode(port); + if (id < 0) + return id; + for (i = 0; i < 14; i++) { + k = (i & 0x3F) | 0x180; + for (j = 0x100; j > 0; j >>= 1) { + outb(CHIP_CS, port); + if (k & j) { + outb(CHIP_CS | CHIP_DO, port); + outb(CHIP_CS | CHIP_DO | CHIP_SK, port); /* A? bit of read */ + } else { + outb(CHIP_CS, port); + outb(CHIP_CS | CHIP_SK, port); /* A? bit of read */ + } + } + (void)inb(port); + value = 0; + for (k = 0, j = 0x8000; k < 16; k++, j >>= 1) { + outb(CHIP_CS, port); + outb(CHIP_CS | CHIP_SK, port); + if (inb(port) & CHIP_DI) + value |= j; + } + regs[i] = value; + outb(0, port); + } + mxser_normal_mode(port); + return id; +} + +static int mxser_ioctl_special(unsigned int cmd, void __user *argp) +{ + struct mxser_port *ip; + struct tty_port *port; + struct tty_struct *tty; + int result, status; + unsigned int i, j; + int ret = 0; + + switch (cmd) { + case MOXA_GET_MAJOR: + if (printk_ratelimit()) + printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl " + "%x (GET_MAJOR), fix your userspace\n", + current->comm, cmd); + return put_user(ttymajor, (int __user *)argp); + + case MOXA_CHKPORTENABLE: + result = 0; + for (i = 0; i < MXSER_BOARDS; i++) + for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) + if (mxser_boards[i].ports[j].ioaddr) + result |= (1 << i); + return put_user(result, (unsigned long __user *)argp); + case MOXA_GETDATACOUNT: + /* The receive side is locked by port->slock but it isn't + clear that an exact snapshot is worth copying here */ + if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log))) + ret = -EFAULT; + return ret; + case MOXA_GETMSTATUS: { + struct mxser_mstatus ms, __user *msu = argp; + for (i = 0; i < MXSER_BOARDS; i++) + for (j = 0; j < MXSER_PORTS_PER_BOARD; j++) { + ip = &mxser_boards[i].ports[j]; + port = &ip->port; + memset(&ms, 0, sizeof(ms)); + + mutex_lock(&port->mutex); + if (!ip->ioaddr) + goto copy; + + tty = tty_port_tty_get(port); + + if (!tty || !tty->termios) + ms.cflag = ip->normal_termios.c_cflag; + else + ms.cflag = tty->termios->c_cflag; + tty_kref_put(tty); + spin_lock_irq(&ip->slock); + status = inb(ip->ioaddr + UART_MSR); + spin_unlock_irq(&ip->slock); + if (status & UART_MSR_DCD) + ms.dcd = 1; + if (status & UART_MSR_DSR) + ms.dsr = 1; + if (status & UART_MSR_CTS) + ms.cts = 1; + copy: + mutex_unlock(&port->mutex); + if (copy_to_user(msu, &ms, sizeof(ms))) + return -EFAULT; + msu++; + } + return 0; + } + case MOXA_ASPP_MON_EXT: { + struct mxser_mon_ext *me; /* it's 2k, stack unfriendly */ + unsigned int cflag, iflag, p; + u8 opmode; + + me = kzalloc(sizeof(*me), GFP_KERNEL); + if (!me) + return -ENOMEM; + + for (i = 0, p = 0; i < MXSER_BOARDS; i++) { + for (j = 0; j < MXSER_PORTS_PER_BOARD; j++, p++) { + if (p >= ARRAY_SIZE(me->rx_cnt)) { + i = MXSER_BOARDS; + break; + } + ip = &mxser_boards[i].ports[j]; + port = &ip->port; + + mutex_lock(&port->mutex); + if (!ip->ioaddr) { + mutex_unlock(&port->mutex); + continue; + } + + spin_lock_irq(&ip->slock); + status = mxser_get_msr(ip->ioaddr, 0, p); + + if (status & UART_MSR_TERI) + ip->icount.rng++; + if (status & UART_MSR_DDSR) + ip->icount.dsr++; + if (status & UART_MSR_DDCD) + ip->icount.dcd++; + if (status & UART_MSR_DCTS) + ip->icount.cts++; + + ip->mon_data.modem_status = status; + me->rx_cnt[p] = ip->mon_data.rxcnt; + me->tx_cnt[p] = ip->mon_data.txcnt; + me->up_rxcnt[p] = ip->mon_data.up_rxcnt; + me->up_txcnt[p] = ip->mon_data.up_txcnt; + me->modem_status[p] = + ip->mon_data.modem_status; + spin_unlock_irq(&ip->slock); + + tty = tty_port_tty_get(&ip->port); + + if (!tty || !tty->termios) { + cflag = ip->normal_termios.c_cflag; + iflag = ip->normal_termios.c_iflag; + me->baudrate[p] = tty_termios_baud_rate(&ip->normal_termios); + } else { + cflag = tty->termios->c_cflag; + iflag = tty->termios->c_iflag; + me->baudrate[p] = tty_get_baud_rate(tty); + } + tty_kref_put(tty); + + me->databits[p] = cflag & CSIZE; + me->stopbits[p] = cflag & CSTOPB; + me->parity[p] = cflag & (PARENB | PARODD | + CMSPAR); + + if (cflag & CRTSCTS) + me->flowctrl[p] |= 0x03; + + if (iflag & (IXON | IXOFF)) + me->flowctrl[p] |= 0x0C; + + if (ip->type == PORT_16550A) + me->fifo[p] = 1; + + opmode = inb(ip->opmode_ioaddr)>>((p % 4) * 2); + opmode &= OP_MODE_MASK; + me->iftype[p] = opmode; + mutex_unlock(&port->mutex); + } + } + if (copy_to_user(argp, me, sizeof(*me))) + ret = -EFAULT; + kfree(me); + return ret; + } + default: + return -ENOIOCTLCMD; + } + return 0; +} + +static int mxser_cflags_changed(struct mxser_port *info, unsigned long arg, + struct async_icount *cprev) +{ + struct async_icount cnow; + unsigned long flags; + int ret; + + spin_lock_irqsave(&info->slock, flags); + cnow = info->icount; /* atomic copy */ + spin_unlock_irqrestore(&info->slock, flags); + + ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || + ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || + ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || + ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); + + *cprev = cnow; + + return ret; +} + +static int mxser_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct mxser_port *info = tty->driver_data; + struct tty_port *port = &info->port; + struct async_icount cnow; + unsigned long flags; + void __user *argp = (void __user *)arg; + int retval; + + if (tty->index == MXSER_PORTS) + return mxser_ioctl_special(cmd, argp); + + if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) { + int p; + unsigned long opmode; + static unsigned char ModeMask[] = { 0xfc, 0xf3, 0xcf, 0x3f }; + int shiftbit; + unsigned char val, mask; + + p = tty->index % 4; + if (cmd == MOXA_SET_OP_MODE) { + if (get_user(opmode, (int __user *) argp)) + return -EFAULT; + if (opmode != RS232_MODE && + opmode != RS485_2WIRE_MODE && + opmode != RS422_MODE && + opmode != RS485_4WIRE_MODE) + return -EFAULT; + mask = ModeMask[p]; + shiftbit = p * 2; + spin_lock_irq(&info->slock); + val = inb(info->opmode_ioaddr); + val &= mask; + val |= (opmode << shiftbit); + outb(val, info->opmode_ioaddr); + spin_unlock_irq(&info->slock); + } else { + shiftbit = p * 2; + spin_lock_irq(&info->slock); + opmode = inb(info->opmode_ioaddr) >> shiftbit; + spin_unlock_irq(&info->slock); + opmode &= OP_MODE_MASK; + if (put_user(opmode, (int __user *)argp)) + return -EFAULT; + } + return 0; + } + + if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && + test_bit(TTY_IO_ERROR, &tty->flags)) + return -EIO; + + switch (cmd) { + case TIOCGSERIAL: + mutex_lock(&port->mutex); + retval = mxser_get_serial_info(tty, argp); + mutex_unlock(&port->mutex); + return retval; + case TIOCSSERIAL: + mutex_lock(&port->mutex); + retval = mxser_set_serial_info(tty, argp); + mutex_unlock(&port->mutex); + return retval; + case TIOCSERGETLSR: /* Get line status register */ + return mxser_get_lsr_info(info, argp); + /* + * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change + * - mask passed in arg for lines of interest + * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) + * Caller should use TIOCGICOUNT to see which one it was + */ + case TIOCMIWAIT: + spin_lock_irqsave(&info->slock, flags); + cnow = info->icount; /* note the counters on entry */ + spin_unlock_irqrestore(&info->slock, flags); + + return wait_event_interruptible(info->port.delta_msr_wait, + mxser_cflags_changed(info, arg, &cnow)); + case MOXA_HighSpeedOn: + return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *)argp); + case MOXA_SDS_RSTICOUNTER: + spin_lock_irq(&info->slock); + info->mon_data.rxcnt = 0; + info->mon_data.txcnt = 0; + spin_unlock_irq(&info->slock); + return 0; + + case MOXA_ASPP_OQUEUE:{ + int len, lsr; + + len = mxser_chars_in_buffer(tty); + spin_lock_irq(&info->slock); + lsr = inb(info->ioaddr + UART_LSR) & UART_LSR_THRE; + spin_unlock_irq(&info->slock); + len += (lsr ? 0 : 1); + + return put_user(len, (int __user *)argp); + } + case MOXA_ASPP_MON: { + int mcr, status; + + spin_lock_irq(&info->slock); + status = mxser_get_msr(info->ioaddr, 1, tty->index); + mxser_check_modem_status(tty, info, status); + + mcr = inb(info->ioaddr + UART_MCR); + spin_unlock_irq(&info->slock); + + if (mcr & MOXA_MUST_MCR_XON_FLAG) + info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFHOLD; + else + info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFHOLD; + + if (mcr & MOXA_MUST_MCR_TX_XON) + info->mon_data.hold_reason &= ~NPPI_NOTIFY_XOFFXENT; + else + info->mon_data.hold_reason |= NPPI_NOTIFY_XOFFXENT; + + if (tty->hw_stopped) + info->mon_data.hold_reason |= NPPI_NOTIFY_CTSHOLD; + else + info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD; + + if (copy_to_user(argp, &info->mon_data, + sizeof(struct mxser_mon))) + return -EFAULT; + + return 0; + } + case MOXA_ASPP_LSTATUS: { + if (put_user(info->err_shadow, (unsigned char __user *)argp)) + return -EFAULT; + + info->err_shadow = 0; + return 0; + } + case MOXA_SET_BAUD_METHOD: { + int method; + + if (get_user(method, (int __user *)argp)) + return -EFAULT; + mxser_set_baud_method[tty->index] = method; + return put_user(method, (int __user *)argp); + } + default: + return -ENOIOCTLCMD; + } + return 0; +} + + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ + +static int mxser_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) + +{ + struct mxser_port *info = tty->driver_data; + struct async_icount cnow; + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->slock, flags); + + icount->frame = cnow.frame; + icount->brk = cnow.brk; + icount->overrun = cnow.overrun; + icount->buf_overrun = cnow.buf_overrun; + icount->parity = cnow.parity; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + return 0; +} + +static void mxser_stoprx(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + + info->ldisc_stop_rx = 1; + if (I_IXOFF(tty)) { + if (info->board->chip_flag) { + info->IER &= ~MOXA_MUST_RECV_ISR; + outb(info->IER, info->ioaddr + UART_IER); + } else { + info->x_char = STOP_CHAR(tty); + outb(0, info->ioaddr + UART_IER); + info->IER |= UART_IER_THRI; + outb(info->IER, info->ioaddr + UART_IER); + } + } + + if (tty->termios->c_cflag & CRTSCTS) { + info->MCR &= ~UART_MCR_RTS; + outb(info->MCR, info->ioaddr + UART_MCR); + } +} + +/* + * This routine is called by the upper-layer tty layer to signal that + * incoming characters should be throttled. + */ +static void mxser_throttle(struct tty_struct *tty) +{ + mxser_stoprx(tty); +} + +static void mxser_unthrottle(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + + /* startrx */ + info->ldisc_stop_rx = 0; + if (I_IXOFF(tty)) { + if (info->x_char) + info->x_char = 0; + else { + if (info->board->chip_flag) { + info->IER |= MOXA_MUST_RECV_ISR; + outb(info->IER, info->ioaddr + UART_IER); + } else { + info->x_char = START_CHAR(tty); + outb(0, info->ioaddr + UART_IER); + info->IER |= UART_IER_THRI; + outb(info->IER, info->ioaddr + UART_IER); + } + } + } + + if (tty->termios->c_cflag & CRTSCTS) { + info->MCR |= UART_MCR_RTS; + outb(info->MCR, info->ioaddr + UART_MCR); + } +} + +/* + * mxser_stop() and mxser_start() + * + * This routines are called before setting or resetting tty->stopped. + * They enable or disable transmitter interrupts, as necessary. + */ +static void mxser_stop(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + if (info->IER & UART_IER_THRI) { + info->IER &= ~UART_IER_THRI; + outb(info->IER, info->ioaddr + UART_IER); + } + spin_unlock_irqrestore(&info->slock, flags); +} + +static void mxser_start(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + if (info->xmit_cnt && info->port.xmit_buf) { + outb(info->IER & ~UART_IER_THRI, info->ioaddr + UART_IER); + info->IER |= UART_IER_THRI; + outb(info->IER, info->ioaddr + UART_IER); + } + spin_unlock_irqrestore(&info->slock, flags); +} + +static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + mxser_change_speed(tty, old_termios); + spin_unlock_irqrestore(&info->slock, flags); + + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + mxser_start(tty); + } + + /* Handle sw stopped */ + if ((old_termios->c_iflag & IXON) && + !(tty->termios->c_iflag & IXON)) { + tty->stopped = 0; + + if (info->board->chip_flag) { + spin_lock_irqsave(&info->slock, flags); + mxser_disable_must_rx_software_flow_control( + info->ioaddr); + spin_unlock_irqrestore(&info->slock, flags); + } + + mxser_start(tty); + } +} + +/* + * mxser_wait_until_sent() --- wait until the transmitter is empty + */ +static void mxser_wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct mxser_port *info = tty->driver_data; + unsigned long orig_jiffies, char_time; + unsigned long flags; + int lsr; + + if (info->type == PORT_UNKNOWN) + return; + + if (info->xmit_fifo_size == 0) + return; /* Just in case.... */ + + orig_jiffies = jiffies; + /* + * Set the check interval to be 1/5 of the estimated time to + * send a single character, and make it at least 1. The check + * interval should also be less than the timeout. + * + * Note: we have to use pretty tight timings here to satisfy + * the NIST-PCTS. + */ + char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; + char_time = char_time / 5; + if (char_time == 0) + char_time = 1; + if (timeout && timeout < char_time) + char_time = timeout; + /* + * If the transmitter hasn't cleared in twice the approximate + * amount of time to send the entire FIFO, it probably won't + * ever clear. This assumes the UART isn't doing flow + * control, which is currently the case. Hence, if it ever + * takes longer than info->timeout, this is probably due to a + * UART bug of some kind. So, we clamp the timeout parameter at + * 2*info->timeout. + */ + if (!timeout || timeout > 2 * info->timeout) + timeout = 2 * info->timeout; +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT + printk(KERN_DEBUG "In rs_wait_until_sent(%d) check=%lu...", + timeout, char_time); + printk("jiff=%lu...", jiffies); +#endif + spin_lock_irqsave(&info->slock, flags); + while (!((lsr = inb(info->ioaddr + UART_LSR)) & UART_LSR_TEMT)) { +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT + printk("lsr = %d (jiff=%lu)...", lsr, jiffies); +#endif + spin_unlock_irqrestore(&info->slock, flags); + schedule_timeout_interruptible(char_time); + spin_lock_irqsave(&info->slock, flags); + if (signal_pending(current)) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } + spin_unlock_irqrestore(&info->slock, flags); + set_current_state(TASK_RUNNING); + +#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT + printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies); +#endif +} + +/* + * This routine is called by tty_hangup() when a hangup is signaled. + */ +static void mxser_hangup(struct tty_struct *tty) +{ + struct mxser_port *info = tty->driver_data; + + mxser_flush_buffer(tty); + tty_port_hangup(&info->port); +} + +/* + * mxser_rs_break() --- routine which turns the break handling on or off + */ +static int mxser_rs_break(struct tty_struct *tty, int break_state) +{ + struct mxser_port *info = tty->driver_data; + unsigned long flags; + + spin_lock_irqsave(&info->slock, flags); + if (break_state == -1) + outb(inb(info->ioaddr + UART_LCR) | UART_LCR_SBC, + info->ioaddr + UART_LCR); + else + outb(inb(info->ioaddr + UART_LCR) & ~UART_LCR_SBC, + info->ioaddr + UART_LCR); + spin_unlock_irqrestore(&info->slock, flags); + return 0; +} + +static void mxser_receive_chars(struct tty_struct *tty, + struct mxser_port *port, int *status) +{ + unsigned char ch, gdl; + int ignored = 0; + int cnt = 0; + int recv_room; + int max = 256; + + recv_room = tty->receive_room; + if (recv_room == 0 && !port->ldisc_stop_rx) + mxser_stoprx(tty); + if (port->board->chip_flag != MOXA_OTHER_UART) { + + if (*status & UART_LSR_SPECIAL) + goto intr_old; + if (port->board->chip_flag == MOXA_MUST_MU860_HWID && + (*status & MOXA_MUST_LSR_RERR)) + goto intr_old; + if (*status & MOXA_MUST_LSR_RERR) + goto intr_old; + + gdl = inb(port->ioaddr + MOXA_MUST_GDL_REGISTER); + + if (port->board->chip_flag == MOXA_MUST_MU150_HWID) + gdl &= MOXA_MUST_GDL_MASK; + if (gdl >= recv_room) { + if (!port->ldisc_stop_rx) + mxser_stoprx(tty); + } + while (gdl--) { + ch = inb(port->ioaddr + UART_RX); + tty_insert_flip_char(tty, ch, 0); + cnt++; + } + goto end_intr; + } +intr_old: + + do { + if (max-- < 0) + break; + + ch = inb(port->ioaddr + UART_RX); + if (port->board->chip_flag && (*status & UART_LSR_OE)) + outb(0x23, port->ioaddr + UART_FCR); + *status &= port->read_status_mask; + if (*status & port->ignore_status_mask) { + if (++ignored > 100) + break; + } else { + char flag = 0; + if (*status & UART_LSR_SPECIAL) { + if (*status & UART_LSR_BI) { + flag = TTY_BREAK; + port->icount.brk++; + + if (port->port.flags & ASYNC_SAK) + do_SAK(tty); + } else if (*status & UART_LSR_PE) { + flag = TTY_PARITY; + port->icount.parity++; + } else if (*status & UART_LSR_FE) { + flag = TTY_FRAME; + port->icount.frame++; + } else if (*status & UART_LSR_OE) { + flag = TTY_OVERRUN; + port->icount.overrun++; + } else + flag = TTY_BREAK; + } + tty_insert_flip_char(tty, ch, flag); + cnt++; + if (cnt >= recv_room) { + if (!port->ldisc_stop_rx) + mxser_stoprx(tty); + break; + } + + } + + if (port->board->chip_flag) + break; + + *status = inb(port->ioaddr + UART_LSR); + } while (*status & UART_LSR_DR); + +end_intr: + mxvar_log.rxcnt[tty->index] += cnt; + port->mon_data.rxcnt += cnt; + port->mon_data.up_rxcnt += cnt; + + /* + * We are called from an interrupt context with &port->slock + * being held. Drop it temporarily in order to prevent + * recursive locking. + */ + spin_unlock(&port->slock); + tty_flip_buffer_push(tty); + spin_lock(&port->slock); +} + +static void mxser_transmit_chars(struct tty_struct *tty, struct mxser_port *port) +{ + int count, cnt; + + if (port->x_char) { + outb(port->x_char, port->ioaddr + UART_TX); + port->x_char = 0; + mxvar_log.txcnt[tty->index]++; + port->mon_data.txcnt++; + port->mon_data.up_txcnt++; + port->icount.tx++; + return; + } + + if (port->port.xmit_buf == NULL) + return; + + if (port->xmit_cnt <= 0 || tty->stopped || + (tty->hw_stopped && + (port->type != PORT_16550A) && + (!port->board->chip_flag))) { + port->IER &= ~UART_IER_THRI; + outb(port->IER, port->ioaddr + UART_IER); + return; + } + + cnt = port->xmit_cnt; + count = port->xmit_fifo_size; + do { + outb(port->port.xmit_buf[port->xmit_tail++], + port->ioaddr + UART_TX); + port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE - 1); + if (--port->xmit_cnt <= 0) + break; + } while (--count > 0); + mxvar_log.txcnt[tty->index] += (cnt - port->xmit_cnt); + + port->mon_data.txcnt += (cnt - port->xmit_cnt); + port->mon_data.up_txcnt += (cnt - port->xmit_cnt); + port->icount.tx += (cnt - port->xmit_cnt); + + if (port->xmit_cnt < WAKEUP_CHARS) + tty_wakeup(tty); + + if (port->xmit_cnt <= 0) { + port->IER &= ~UART_IER_THRI; + outb(port->IER, port->ioaddr + UART_IER); + } +} + +/* + * This is the serial driver's generic interrupt routine + */ +static irqreturn_t mxser_interrupt(int irq, void *dev_id) +{ + int status, iir, i; + struct mxser_board *brd = NULL; + struct mxser_port *port; + int max, irqbits, bits, msr; + unsigned int int_cnt, pass_counter = 0; + int handled = IRQ_NONE; + struct tty_struct *tty; + + for (i = 0; i < MXSER_BOARDS; i++) + if (dev_id == &mxser_boards[i]) { + brd = dev_id; + break; + } + + if (i == MXSER_BOARDS) + goto irq_stop; + if (brd == NULL) + goto irq_stop; + max = brd->info->nports; + while (pass_counter++ < MXSER_ISR_PASS_LIMIT) { + irqbits = inb(brd->vector) & brd->vector_mask; + if (irqbits == brd->vector_mask) + break; + + handled = IRQ_HANDLED; + for (i = 0, bits = 1; i < max; i++, irqbits |= bits, bits <<= 1) { + if (irqbits == brd->vector_mask) + break; + if (bits & irqbits) + continue; + port = &brd->ports[i]; + + int_cnt = 0; + spin_lock(&port->slock); + do { + iir = inb(port->ioaddr + UART_IIR); + if (iir & UART_IIR_NO_INT) + break; + iir &= MOXA_MUST_IIR_MASK; + tty = tty_port_tty_get(&port->port); + if (!tty || + (port->port.flags & ASYNC_CLOSING) || + !(port->port.flags & + ASYNC_INITIALIZED)) { + status = inb(port->ioaddr + UART_LSR); + outb(0x27, port->ioaddr + UART_FCR); + inb(port->ioaddr + UART_MSR); + tty_kref_put(tty); + break; + } + + status = inb(port->ioaddr + UART_LSR); + + if (status & UART_LSR_PE) + port->err_shadow |= NPPI_NOTIFY_PARITY; + if (status & UART_LSR_FE) + port->err_shadow |= NPPI_NOTIFY_FRAMING; + if (status & UART_LSR_OE) + port->err_shadow |= + NPPI_NOTIFY_HW_OVERRUN; + if (status & UART_LSR_BI) + port->err_shadow |= NPPI_NOTIFY_BREAK; + + if (port->board->chip_flag) { + if (iir == MOXA_MUST_IIR_GDA || + iir == MOXA_MUST_IIR_RDA || + iir == MOXA_MUST_IIR_RTO || + iir == MOXA_MUST_IIR_LSR) + mxser_receive_chars(tty, port, + &status); + + } else { + status &= port->read_status_mask; + if (status & UART_LSR_DR) + mxser_receive_chars(tty, port, + &status); + } + msr = inb(port->ioaddr + UART_MSR); + if (msr & UART_MSR_ANY_DELTA) + mxser_check_modem_status(tty, port, msr); + + if (port->board->chip_flag) { + if (iir == 0x02 && (status & + UART_LSR_THRE)) + mxser_transmit_chars(tty, port); + } else { + if (status & UART_LSR_THRE) + mxser_transmit_chars(tty, port); + } + tty_kref_put(tty); + } while (int_cnt++ < MXSER_ISR_PASS_LIMIT); + spin_unlock(&port->slock); + } + } + +irq_stop: + return handled; +} + +static const struct tty_operations mxser_ops = { + .open = mxser_open, + .close = mxser_close, + .write = mxser_write, + .put_char = mxser_put_char, + .flush_chars = mxser_flush_chars, + .write_room = mxser_write_room, + .chars_in_buffer = mxser_chars_in_buffer, + .flush_buffer = mxser_flush_buffer, + .ioctl = mxser_ioctl, + .throttle = mxser_throttle, + .unthrottle = mxser_unthrottle, + .set_termios = mxser_set_termios, + .stop = mxser_stop, + .start = mxser_start, + .hangup = mxser_hangup, + .break_ctl = mxser_rs_break, + .wait_until_sent = mxser_wait_until_sent, + .tiocmget = mxser_tiocmget, + .tiocmset = mxser_tiocmset, + .get_icount = mxser_get_icount, +}; + +struct tty_port_operations mxser_port_ops = { + .carrier_raised = mxser_carrier_raised, + .dtr_rts = mxser_dtr_rts, + .activate = mxser_activate, + .shutdown = mxser_shutdown_port, +}; + +/* + * The MOXA Smartio/Industio serial driver boot-time initialization code! + */ + +static void mxser_release_ISA_res(struct mxser_board *brd) +{ + free_irq(brd->irq, brd); + release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); + release_region(brd->vector, 1); +} + +static int __devinit mxser_initbrd(struct mxser_board *brd, + struct pci_dev *pdev) +{ + struct mxser_port *info; + unsigned int i; + int retval; + + printk(KERN_INFO "mxser: max. baud rate = %d bps\n", + brd->ports[0].max_baud); + + for (i = 0; i < brd->info->nports; i++) { + info = &brd->ports[i]; + tty_port_init(&info->port); + info->port.ops = &mxser_port_ops; + info->board = brd; + info->stop_rx = 0; + info->ldisc_stop_rx = 0; + + /* Enhance mode enabled here */ + if (brd->chip_flag != MOXA_OTHER_UART) + mxser_enable_must_enchance_mode(info->ioaddr); + + info->port.flags = ASYNC_SHARE_IRQ; + info->type = brd->uart_type; + + process_txrx_fifo(info); + + info->custom_divisor = info->baud_base * 16; + info->port.close_delay = 5 * HZ / 10; + info->port.closing_wait = 30 * HZ; + info->normal_termios = mxvar_sdriver->init_termios; + memset(&info->mon_data, 0, sizeof(struct mxser_mon)); + info->err_shadow = 0; + spin_lock_init(&info->slock); + + /* before set INT ISR, disable all int */ + outb(inb(info->ioaddr + UART_IER) & 0xf0, + info->ioaddr + UART_IER); + } + + retval = request_irq(brd->irq, mxser_interrupt, IRQF_SHARED, "mxser", + brd); + if (retval) + printk(KERN_ERR "Board %s: Request irq failed, IRQ (%d) may " + "conflict with another device.\n", + brd->info->name, brd->irq); + + return retval; +} + +static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd) +{ + int id, i, bits; + unsigned short regs[16], irq; + unsigned char scratch, scratch2; + + brd->chip_flag = MOXA_OTHER_UART; + + id = mxser_read_register(cap, regs); + switch (id) { + case C168_ASIC_ID: + brd->info = &mxser_cards[0]; + break; + case C104_ASIC_ID: + brd->info = &mxser_cards[1]; + break; + case CI104J_ASIC_ID: + brd->info = &mxser_cards[2]; + break; + case C102_ASIC_ID: + brd->info = &mxser_cards[5]; + break; + case CI132_ASIC_ID: + brd->info = &mxser_cards[6]; + break; + case CI134_ASIC_ID: + brd->info = &mxser_cards[7]; + break; + default: + return 0; + } + + irq = 0; + /* some ISA cards have 2 ports, but we want to see them as 4-port (why?) + Flag-hack checks if configuration should be read as 2-port here. */ + if (brd->info->nports == 2 || (brd->info->flags & MXSER_HAS2)) { + irq = regs[9] & 0xF000; + irq = irq | (irq >> 4); + if (irq != (regs[9] & 0xFF00)) + goto err_irqconflict; + } else if (brd->info->nports == 4) { + irq = regs[9] & 0xF000; + irq = irq | (irq >> 4); + irq = irq | (irq >> 8); + if (irq != regs[9]) + goto err_irqconflict; + } else if (brd->info->nports == 8) { + irq = regs[9] & 0xF000; + irq = irq | (irq >> 4); + irq = irq | (irq >> 8); + if ((irq != regs[9]) || (irq != regs[10])) + goto err_irqconflict; + } + + if (!irq) { + printk(KERN_ERR "mxser: interrupt number unset\n"); + return -EIO; + } + brd->irq = ((int)(irq & 0xF000) >> 12); + for (i = 0; i < 8; i++) + brd->ports[i].ioaddr = (int) regs[i + 1] & 0xFFF8; + if ((regs[12] & 0x80) == 0) { + printk(KERN_ERR "mxser: invalid interrupt vector\n"); + return -EIO; + } + brd->vector = (int)regs[11]; /* interrupt vector */ + if (id == 1) + brd->vector_mask = 0x00FF; + else + brd->vector_mask = 0x000F; + for (i = 7, bits = 0x0100; i >= 0; i--, bits <<= 1) { + if (regs[12] & bits) { + brd->ports[i].baud_base = 921600; + brd->ports[i].max_baud = 921600; + } else { + brd->ports[i].baud_base = 115200; + brd->ports[i].max_baud = 115200; + } + } + scratch2 = inb(cap + UART_LCR) & (~UART_LCR_DLAB); + outb(scratch2 | UART_LCR_DLAB, cap + UART_LCR); + outb(0, cap + UART_EFR); /* EFR is the same as FCR */ + outb(scratch2, cap + UART_LCR); + outb(UART_FCR_ENABLE_FIFO, cap + UART_FCR); + scratch = inb(cap + UART_IIR); + + if (scratch & 0xC0) + brd->uart_type = PORT_16550A; + else + brd->uart_type = PORT_16450; + if (!request_region(brd->ports[0].ioaddr, 8 * brd->info->nports, + "mxser(IO)")) { + printk(KERN_ERR "mxser: can't request ports I/O region: " + "0x%.8lx-0x%.8lx\n", + brd->ports[0].ioaddr, brd->ports[0].ioaddr + + 8 * brd->info->nports - 1); + return -EIO; + } + if (!request_region(brd->vector, 1, "mxser(vector)")) { + release_region(brd->ports[0].ioaddr, 8 * brd->info->nports); + printk(KERN_ERR "mxser: can't request interrupt vector region: " + "0x%.8lx-0x%.8lx\n", + brd->ports[0].ioaddr, brd->ports[0].ioaddr + + 8 * brd->info->nports - 1); + return -EIO; + } + return brd->info->nports; + +err_irqconflict: + printk(KERN_ERR "mxser: invalid interrupt number\n"); + return -EIO; +} + +static int __devinit mxser_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ +#ifdef CONFIG_PCI + struct mxser_board *brd; + unsigned int i, j; + unsigned long ioaddress; + int retval = -EINVAL; + + for (i = 0; i < MXSER_BOARDS; i++) + if (mxser_boards[i].info == NULL) + break; + + if (i >= MXSER_BOARDS) { + dev_err(&pdev->dev, "too many boards found (maximum %d), board " + "not configured\n", MXSER_BOARDS); + goto err; + } + + brd = &mxser_boards[i]; + brd->idx = i * MXSER_PORTS_PER_BOARD; + dev_info(&pdev->dev, "found MOXA %s board (BusNo=%d, DevNo=%d)\n", + mxser_cards[ent->driver_data].name, + pdev->bus->number, PCI_SLOT(pdev->devfn)); + + retval = pci_enable_device(pdev); + if (retval) { + dev_err(&pdev->dev, "PCI enable failed\n"); + goto err; + } + + /* io address */ + ioaddress = pci_resource_start(pdev, 2); + retval = pci_request_region(pdev, 2, "mxser(IO)"); + if (retval) + goto err_dis; + + brd->info = &mxser_cards[ent->driver_data]; + for (i = 0; i < brd->info->nports; i++) + brd->ports[i].ioaddr = ioaddress + 8 * i; + + /* vector */ + ioaddress = pci_resource_start(pdev, 3); + retval = pci_request_region(pdev, 3, "mxser(vector)"); + if (retval) + goto err_zero; + brd->vector = ioaddress; + + /* irq */ + brd->irq = pdev->irq; + + brd->chip_flag = CheckIsMoxaMust(brd->ports[0].ioaddr); + brd->uart_type = PORT_16550A; + brd->vector_mask = 0; + + for (i = 0; i < brd->info->nports; i++) { + for (j = 0; j < UART_INFO_NUM; j++) { + if (Gpci_uart_info[j].type == brd->chip_flag) { + brd->ports[i].max_baud = + Gpci_uart_info[j].max_baud; + + /* exception....CP-102 */ + if (brd->info->flags & MXSER_HIGHBAUD) + brd->ports[i].max_baud = 921600; + break; + } + } + } + + if (brd->chip_flag == MOXA_MUST_MU860_HWID) { + for (i = 0; i < brd->info->nports; i++) { + if (i < 4) + brd->ports[i].opmode_ioaddr = ioaddress + 4; + else + brd->ports[i].opmode_ioaddr = ioaddress + 0x0c; + } + outb(0, ioaddress + 4); /* default set to RS232 mode */ + outb(0, ioaddress + 0x0c); /* default set to RS232 mode */ + } + + for (i = 0; i < brd->info->nports; i++) { + brd->vector_mask |= (1 << i); + brd->ports[i].baud_base = 921600; + } + + /* mxser_initbrd will hook ISR. */ + retval = mxser_initbrd(brd, pdev); + if (retval) + goto err_rel3; + + for (i = 0; i < brd->info->nports; i++) + tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev); + + pci_set_drvdata(pdev, brd); + + return 0; +err_rel3: + pci_release_region(pdev, 3); +err_zero: + brd->info = NULL; + pci_release_region(pdev, 2); +err_dis: + pci_disable_device(pdev); +err: + return retval; +#else + return -ENODEV; +#endif +} + +static void __devexit mxser_remove(struct pci_dev *pdev) +{ +#ifdef CONFIG_PCI + struct mxser_board *brd = pci_get_drvdata(pdev); + unsigned int i; + + for (i = 0; i < brd->info->nports; i++) + tty_unregister_device(mxvar_sdriver, brd->idx + i); + + free_irq(pdev->irq, brd); + pci_release_region(pdev, 2); + pci_release_region(pdev, 3); + pci_disable_device(pdev); + brd->info = NULL; +#endif +} + +static struct pci_driver mxser_driver = { + .name = "mxser", + .id_table = mxser_pcibrds, + .probe = mxser_probe, + .remove = __devexit_p(mxser_remove) +}; + +static int __init mxser_module_init(void) +{ + struct mxser_board *brd; + unsigned int b, i, m; + int retval; + + mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1); + if (!mxvar_sdriver) + return -ENOMEM; + + printk(KERN_INFO "MOXA Smartio/Industio family driver version %s\n", + MXSER_VERSION); + + /* Initialize the tty_driver structure */ + mxvar_sdriver->owner = THIS_MODULE; + mxvar_sdriver->magic = TTY_DRIVER_MAGIC; + mxvar_sdriver->name = "ttyMI"; + mxvar_sdriver->major = ttymajor; + mxvar_sdriver->minor_start = 0; + mxvar_sdriver->num = MXSER_PORTS + 1; + mxvar_sdriver->type = TTY_DRIVER_TYPE_SERIAL; + mxvar_sdriver->subtype = SERIAL_TYPE_NORMAL; + mxvar_sdriver->init_termios = tty_std_termios; + mxvar_sdriver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; + mxvar_sdriver->flags = TTY_DRIVER_REAL_RAW|TTY_DRIVER_DYNAMIC_DEV; + tty_set_operations(mxvar_sdriver, &mxser_ops); + + retval = tty_register_driver(mxvar_sdriver); + if (retval) { + printk(KERN_ERR "Couldn't install MOXA Smartio/Industio family " + "tty driver !\n"); + goto err_put; + } + + /* Start finding ISA boards here */ + for (m = 0, b = 0; b < MXSER_BOARDS; b++) { + if (!ioaddr[b]) + continue; + + brd = &mxser_boards[m]; + retval = mxser_get_ISA_conf(ioaddr[b], brd); + if (retval <= 0) { + brd->info = NULL; + continue; + } + + printk(KERN_INFO "mxser: found MOXA %s board (CAP=0x%lx)\n", + brd->info->name, ioaddr[b]); + + /* mxser_initbrd will hook ISR. */ + if (mxser_initbrd(brd, NULL) < 0) { + brd->info = NULL; + continue; + } + + brd->idx = m * MXSER_PORTS_PER_BOARD; + for (i = 0; i < brd->info->nports; i++) + tty_register_device(mxvar_sdriver, brd->idx + i, NULL); + + m++; + } + + retval = pci_register_driver(&mxser_driver); + if (retval) { + printk(KERN_ERR "mxser: can't register pci driver\n"); + if (!m) { + retval = -ENODEV; + goto err_unr; + } /* else: we have some ISA cards under control */ + } + + return 0; +err_unr: + tty_unregister_driver(mxvar_sdriver); +err_put: + put_tty_driver(mxvar_sdriver); + return retval; +} + +static void __exit mxser_module_exit(void) +{ + unsigned int i, j; + + pci_unregister_driver(&mxser_driver); + + for (i = 0; i < MXSER_BOARDS; i++) /* ISA remains */ + if (mxser_boards[i].info != NULL) + for (j = 0; j < mxser_boards[i].info->nports; j++) + tty_unregister_device(mxvar_sdriver, + mxser_boards[i].idx + j); + tty_unregister_driver(mxvar_sdriver); + put_tty_driver(mxvar_sdriver); + + for (i = 0; i < MXSER_BOARDS; i++) + if (mxser_boards[i].info != NULL) + mxser_release_ISA_res(&mxser_boards[i]); +} + +module_init(mxser_module_init); +module_exit(mxser_module_exit); diff --git a/drivers/tty/mxser.h b/drivers/tty/mxser.h new file mode 100644 index 000000000000..41878a69203d --- /dev/null +++ b/drivers/tty/mxser.h @@ -0,0 +1,150 @@ +#ifndef _MXSER_H +#define _MXSER_H + +/* + * Semi-public control interfaces + */ + +/* + * MOXA ioctls + */ + +#define MOXA 0x400 +#define MOXA_GETDATACOUNT (MOXA + 23) +#define MOXA_DIAGNOSE (MOXA + 50) +#define MOXA_CHKPORTENABLE (MOXA + 60) +#define MOXA_HighSpeedOn (MOXA + 61) +#define MOXA_GET_MAJOR (MOXA + 63) +#define MOXA_GETMSTATUS (MOXA + 65) +#define MOXA_SET_OP_MODE (MOXA + 66) +#define MOXA_GET_OP_MODE (MOXA + 67) + +#define RS232_MODE 0 +#define RS485_2WIRE_MODE 1 +#define RS422_MODE 2 +#define RS485_4WIRE_MODE 3 +#define OP_MODE_MASK 3 + +#define MOXA_SDS_RSTICOUNTER (MOXA + 69) +#define MOXA_ASPP_OQUEUE (MOXA + 70) +#define MOXA_ASPP_MON (MOXA + 73) +#define MOXA_ASPP_LSTATUS (MOXA + 74) +#define MOXA_ASPP_MON_EXT (MOXA + 75) +#define MOXA_SET_BAUD_METHOD (MOXA + 76) + +/* --------------------------------------------------- */ + +#define NPPI_NOTIFY_PARITY 0x01 +#define NPPI_NOTIFY_FRAMING 0x02 +#define NPPI_NOTIFY_HW_OVERRUN 0x04 +#define NPPI_NOTIFY_SW_OVERRUN 0x08 +#define NPPI_NOTIFY_BREAK 0x10 + +#define NPPI_NOTIFY_CTSHOLD 0x01 /* Tx hold by CTS low */ +#define NPPI_NOTIFY_DSRHOLD 0x02 /* Tx hold by DSR low */ +#define NPPI_NOTIFY_XOFFHOLD 0x08 /* Tx hold by Xoff received */ +#define NPPI_NOTIFY_XOFFXENT 0x10 /* Xoff Sent */ + +/* follow just for Moxa Must chip define. */ +/* */ +/* when LCR register (offset 0x03) write following value, */ +/* the Must chip will enter enchance mode. And write value */ +/* on EFR (offset 0x02) bit 6,7 to change bank. */ +#define MOXA_MUST_ENTER_ENCHANCE 0xBF + +/* when enhance mode enable, access on general bank register */ +#define MOXA_MUST_GDL_REGISTER 0x07 +#define MOXA_MUST_GDL_MASK 0x7F +#define MOXA_MUST_GDL_HAS_BAD_DATA 0x80 + +#define MOXA_MUST_LSR_RERR 0x80 /* error in receive FIFO */ +/* enchance register bank select and enchance mode setting register */ +/* when LCR register equal to 0xBF */ +#define MOXA_MUST_EFR_REGISTER 0x02 +/* enchance mode enable */ +#define MOXA_MUST_EFR_EFRB_ENABLE 0x10 +/* enchance reister bank set 0, 1, 2 */ +#define MOXA_MUST_EFR_BANK0 0x00 +#define MOXA_MUST_EFR_BANK1 0x40 +#define MOXA_MUST_EFR_BANK2 0x80 +#define MOXA_MUST_EFR_BANK3 0xC0 +#define MOXA_MUST_EFR_BANK_MASK 0xC0 + +/* set XON1 value register, when LCR=0xBF and change to bank0 */ +#define MOXA_MUST_XON1_REGISTER 0x04 + +/* set XON2 value register, when LCR=0xBF and change to bank0 */ +#define MOXA_MUST_XON2_REGISTER 0x05 + +/* set XOFF1 value register, when LCR=0xBF and change to bank0 */ +#define MOXA_MUST_XOFF1_REGISTER 0x06 + +/* set XOFF2 value register, when LCR=0xBF and change to bank0 */ +#define MOXA_MUST_XOFF2_REGISTER 0x07 + +#define MOXA_MUST_RBRTL_REGISTER 0x04 +#define MOXA_MUST_RBRTH_REGISTER 0x05 +#define MOXA_MUST_RBRTI_REGISTER 0x06 +#define MOXA_MUST_THRTL_REGISTER 0x07 +#define MOXA_MUST_ENUM_REGISTER 0x04 +#define MOXA_MUST_HWID_REGISTER 0x05 +#define MOXA_MUST_ECR_REGISTER 0x06 +#define MOXA_MUST_CSR_REGISTER 0x07 + +/* good data mode enable */ +#define MOXA_MUST_FCR_GDA_MODE_ENABLE 0x20 +/* only good data put into RxFIFO */ +#define MOXA_MUST_FCR_GDA_ONLY_ENABLE 0x10 + +/* enable CTS interrupt */ +#define MOXA_MUST_IER_ECTSI 0x80 +/* enable RTS interrupt */ +#define MOXA_MUST_IER_ERTSI 0x40 +/* enable Xon/Xoff interrupt */ +#define MOXA_MUST_IER_XINT 0x20 +/* enable GDA interrupt */ +#define MOXA_MUST_IER_EGDAI 0x10 + +#define MOXA_MUST_RECV_ISR (UART_IER_RDI | MOXA_MUST_IER_EGDAI) + +/* GDA interrupt pending */ +#define MOXA_MUST_IIR_GDA 0x1C +#define MOXA_MUST_IIR_RDA 0x04 +#define MOXA_MUST_IIR_RTO 0x0C +#define MOXA_MUST_IIR_LSR 0x06 + +/* recieved Xon/Xoff or specical interrupt pending */ +#define MOXA_MUST_IIR_XSC 0x10 + +/* RTS/CTS change state interrupt pending */ +#define MOXA_MUST_IIR_RTSCTS 0x20 +#define MOXA_MUST_IIR_MASK 0x3E + +#define MOXA_MUST_MCR_XON_FLAG 0x40 +#define MOXA_MUST_MCR_XON_ANY 0x80 +#define MOXA_MUST_MCR_TX_XON 0x08 + +/* software flow control on chip mask value */ +#define MOXA_MUST_EFR_SF_MASK 0x0F +/* send Xon1/Xoff1 */ +#define MOXA_MUST_EFR_SF_TX1 0x08 +/* send Xon2/Xoff2 */ +#define MOXA_MUST_EFR_SF_TX2 0x04 +/* send Xon1,Xon2/Xoff1,Xoff2 */ +#define MOXA_MUST_EFR_SF_TX12 0x0C +/* don't send Xon/Xoff */ +#define MOXA_MUST_EFR_SF_TX_NO 0x00 +/* Tx software flow control mask */ +#define MOXA_MUST_EFR_SF_TX_MASK 0x0C +/* don't receive Xon/Xoff */ +#define MOXA_MUST_EFR_SF_RX_NO 0x00 +/* receive Xon1/Xoff1 */ +#define MOXA_MUST_EFR_SF_RX1 0x02 +/* receive Xon2/Xoff2 */ +#define MOXA_MUST_EFR_SF_RX2 0x01 +/* receive Xon1,Xon2/Xoff1,Xoff2 */ +#define MOXA_MUST_EFR_SF_RX12 0x03 +/* Rx software flow control mask */ +#define MOXA_MUST_EFR_SF_RX_MASK 0x03 + +#endif diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c new file mode 100644 index 000000000000..513ba12064ea --- /dev/null +++ b/drivers/tty/nozomi.c @@ -0,0 +1,1993 @@ +/* + * nozomi.c -- HSDPA driver Broadband Wireless Data Card - Globe Trotter + * + * Written by: Ulf Jakobsson, + * Jan Åkerfeldt, + * Stefan Thomasson, + * + * Maintained by: Paul Hardwick (p.hardwick@option.com) + * + * Patches: + * Locking code changes for Vodafone by Sphere Systems Ltd, + * Andrew Bird (ajb@spheresystems.co.uk ) + * & Phil Sanderson + * + * Source has been ported from an implementation made by Filip Aben @ Option + * + * -------------------------------------------------------------------------- + * + * Copyright (c) 2005,2006 Option Wireless Sweden AB + * Copyright (c) 2006 Sphere Systems Ltd + * Copyright (c) 2006 Option Wireless n/v + * All rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * -------------------------------------------------------------------------- + */ + +/* Enable this to have a lot of debug printouts */ +#define DEBUG + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + + +#define VERSION_STRING DRIVER_DESC " 2.1d (build date: " \ + __DATE__ " " __TIME__ ")" + +/* Macros definitions */ + +/* Default debug printout level */ +#define NOZOMI_DEBUG_LEVEL 0x00 + +#define P_BUF_SIZE 128 +#define NFO(_err_flag_, args...) \ +do { \ + char tmp[P_BUF_SIZE]; \ + snprintf(tmp, sizeof(tmp), ##args); \ + printk(_err_flag_ "[%d] %s(): %s\n", __LINE__, \ + __func__, tmp); \ +} while (0) + +#define DBG1(args...) D_(0x01, ##args) +#define DBG2(args...) D_(0x02, ##args) +#define DBG3(args...) D_(0x04, ##args) +#define DBG4(args...) D_(0x08, ##args) +#define DBG5(args...) D_(0x10, ##args) +#define DBG6(args...) D_(0x20, ##args) +#define DBG7(args...) D_(0x40, ##args) +#define DBG8(args...) D_(0x80, ##args) + +#ifdef DEBUG +/* Do we need this settable at runtime? */ +static int debug = NOZOMI_DEBUG_LEVEL; + +#define D(lvl, args...) do \ + {if (lvl & debug) NFO(KERN_DEBUG, ##args); } \ + while (0) +#define D_(lvl, args...) D(lvl, ##args) + +/* These printouts are always printed */ + +#else +static int debug; +#define D_(lvl, args...) +#endif + +/* TODO: rewrite to optimize macros... */ + +#define TMP_BUF_MAX 256 + +#define DUMP(buf__,len__) \ + do { \ + char tbuf[TMP_BUF_MAX] = {0};\ + if (len__ > 1) {\ + snprintf(tbuf, len__ > TMP_BUF_MAX ? TMP_BUF_MAX : len__, "%s", buf__);\ + if (tbuf[len__-2] == '\r') {\ + tbuf[len__-2] = 'r';\ + } \ + DBG1("SENDING: '%s' (%d+n)", tbuf, len__);\ + } else {\ + DBG1("SENDING: '%s' (%d)", tbuf, len__);\ + } \ +} while (0) + +/* Defines */ +#define NOZOMI_NAME "nozomi" +#define NOZOMI_NAME_TTY "nozomi_tty" +#define DRIVER_DESC "Nozomi driver" + +#define NTTY_TTY_MAXMINORS 256 +#define NTTY_FIFO_BUFFER_SIZE 8192 + +/* Must be power of 2 */ +#define FIFO_BUFFER_SIZE_UL 8192 + +/* Size of tmp send buffer to card */ +#define SEND_BUF_MAX 1024 +#define RECEIVE_BUF_MAX 4 + + +#define R_IIR 0x0000 /* Interrupt Identity Register */ +#define R_FCR 0x0000 /* Flow Control Register */ +#define R_IER 0x0004 /* Interrupt Enable Register */ + +#define CONFIG_MAGIC 0xEFEFFEFE +#define TOGGLE_VALID 0x0000 + +/* Definition of interrupt tokens */ +#define MDM_DL1 0x0001 +#define MDM_UL1 0x0002 +#define MDM_DL2 0x0004 +#define MDM_UL2 0x0008 +#define DIAG_DL1 0x0010 +#define DIAG_DL2 0x0020 +#define DIAG_UL 0x0040 +#define APP1_DL 0x0080 +#define APP1_UL 0x0100 +#define APP2_DL 0x0200 +#define APP2_UL 0x0400 +#define CTRL_DL 0x0800 +#define CTRL_UL 0x1000 +#define RESET 0x8000 + +#define MDM_DL (MDM_DL1 | MDM_DL2) +#define MDM_UL (MDM_UL1 | MDM_UL2) +#define DIAG_DL (DIAG_DL1 | DIAG_DL2) + +/* modem signal definition */ +#define CTRL_DSR 0x0001 +#define CTRL_DCD 0x0002 +#define CTRL_RI 0x0004 +#define CTRL_CTS 0x0008 + +#define CTRL_DTR 0x0001 +#define CTRL_RTS 0x0002 + +#define MAX_PORT 4 +#define NOZOMI_MAX_PORTS 5 +#define NOZOMI_MAX_CARDS (NTTY_TTY_MAXMINORS / MAX_PORT) + +/* Type definitions */ + +/* + * There are two types of nozomi cards, + * one with 2048 memory and with 8192 memory + */ +enum card_type { + F32_2 = 2048, /* 512 bytes downlink + uplink * 2 -> 2048 */ + F32_8 = 8192, /* 3072 bytes downl. + 1024 bytes uplink * 2 -> 8192 */ +}; + +/* Initialization states a card can be in */ +enum card_state { + NOZOMI_STATE_UKNOWN = 0, + NOZOMI_STATE_ENABLED = 1, /* pci device enabled */ + NOZOMI_STATE_ALLOCATED = 2, /* config setup done */ + NOZOMI_STATE_READY = 3, /* flowcontrols received */ +}; + +/* Two different toggle channels exist */ +enum channel_type { + CH_A = 0, + CH_B = 1, +}; + +/* Port definition for the card regarding flow control */ +enum ctrl_port_type { + CTRL_CMD = 0, + CTRL_MDM = 1, + CTRL_DIAG = 2, + CTRL_APP1 = 3, + CTRL_APP2 = 4, + CTRL_ERROR = -1, +}; + +/* Ports that the nozomi has */ +enum port_type { + PORT_MDM = 0, + PORT_DIAG = 1, + PORT_APP1 = 2, + PORT_APP2 = 3, + PORT_CTRL = 4, + PORT_ERROR = -1, +}; + +#ifdef __BIG_ENDIAN +/* Big endian */ + +struct toggles { + unsigned int enabled:5; /* + * Toggle fields are valid if enabled is 0, + * else A-channels must always be used. + */ + unsigned int diag_dl:1; + unsigned int mdm_dl:1; + unsigned int mdm_ul:1; +} __attribute__ ((packed)); + +/* Configuration table to read at startup of card */ +/* Is for now only needed during initialization phase */ +struct config_table { + u32 signature; + u16 product_information; + u16 version; + u8 pad3[3]; + struct toggles toggle; + u8 pad1[4]; + u16 dl_mdm_len1; /* + * If this is 64, it can hold + * 60 bytes + 4 that is length field + */ + u16 dl_start; + + u16 dl_diag_len1; + u16 dl_mdm_len2; /* + * If this is 64, it can hold + * 60 bytes + 4 that is length field + */ + u16 dl_app1_len; + + u16 dl_diag_len2; + u16 dl_ctrl_len; + u16 dl_app2_len; + u8 pad2[16]; + u16 ul_mdm_len1; + u16 ul_start; + u16 ul_diag_len; + u16 ul_mdm_len2; + u16 ul_app1_len; + u16 ul_app2_len; + u16 ul_ctrl_len; +} __attribute__ ((packed)); + +/* This stores all control downlink flags */ +struct ctrl_dl { + u8 port; + unsigned int reserved:4; + unsigned int CTS:1; + unsigned int RI:1; + unsigned int DCD:1; + unsigned int DSR:1; +} __attribute__ ((packed)); + +/* This stores all control uplink flags */ +struct ctrl_ul { + u8 port; + unsigned int reserved:6; + unsigned int RTS:1; + unsigned int DTR:1; +} __attribute__ ((packed)); + +#else +/* Little endian */ + +/* This represents the toggle information */ +struct toggles { + unsigned int mdm_ul:1; + unsigned int mdm_dl:1; + unsigned int diag_dl:1; + unsigned int enabled:5; /* + * Toggle fields are valid if enabled is 0, + * else A-channels must always be used. + */ +} __attribute__ ((packed)); + +/* Configuration table to read at startup of card */ +struct config_table { + u32 signature; + u16 version; + u16 product_information; + struct toggles toggle; + u8 pad1[7]; + u16 dl_start; + u16 dl_mdm_len1; /* + * If this is 64, it can hold + * 60 bytes + 4 that is length field + */ + u16 dl_mdm_len2; + u16 dl_diag_len1; + u16 dl_diag_len2; + u16 dl_app1_len; + u16 dl_app2_len; + u16 dl_ctrl_len; + u8 pad2[16]; + u16 ul_start; + u16 ul_mdm_len2; + u16 ul_mdm_len1; + u16 ul_diag_len; + u16 ul_app1_len; + u16 ul_app2_len; + u16 ul_ctrl_len; +} __attribute__ ((packed)); + +/* This stores all control downlink flags */ +struct ctrl_dl { + unsigned int DSR:1; + unsigned int DCD:1; + unsigned int RI:1; + unsigned int CTS:1; + unsigned int reserverd:4; + u8 port; +} __attribute__ ((packed)); + +/* This stores all control uplink flags */ +struct ctrl_ul { + unsigned int DTR:1; + unsigned int RTS:1; + unsigned int reserved:6; + u8 port; +} __attribute__ ((packed)); +#endif + +/* This holds all information that is needed regarding a port */ +struct port { + struct tty_port port; + u8 update_flow_control; + struct ctrl_ul ctrl_ul; + struct ctrl_dl ctrl_dl; + struct kfifo fifo_ul; + void __iomem *dl_addr[2]; + u32 dl_size[2]; + u8 toggle_dl; + void __iomem *ul_addr[2]; + u32 ul_size[2]; + u8 toggle_ul; + u16 token_dl; + + /* mutex to ensure one access patch to this port */ + struct mutex tty_sem; + wait_queue_head_t tty_wait; + struct async_icount tty_icount; + + struct nozomi *dc; +}; + +/* Private data one for each card in the system */ +struct nozomi { + void __iomem *base_addr; + unsigned long flip; + + /* Pointers to registers */ + void __iomem *reg_iir; + void __iomem *reg_fcr; + void __iomem *reg_ier; + + u16 last_ier; + enum card_type card_type; + struct config_table config_table; /* Configuration table */ + struct pci_dev *pdev; + struct port port[NOZOMI_MAX_PORTS]; + u8 *send_buf; + + spinlock_t spin_mutex; /* secures access to registers and tty */ + + unsigned int index_start; + enum card_state state; + u32 open_ttys; +}; + +/* This is a data packet that is read or written to/from card */ +struct buffer { + u32 size; /* size is the length of the data buffer */ + u8 *data; +} __attribute__ ((packed)); + +/* Global variables */ +static const struct pci_device_id nozomi_pci_tbl[] __devinitconst = { + {PCI_DEVICE(0x1931, 0x000c)}, /* Nozomi HSDPA */ + {}, +}; + +MODULE_DEVICE_TABLE(pci, nozomi_pci_tbl); + +static struct nozomi *ndevs[NOZOMI_MAX_CARDS]; +static struct tty_driver *ntty_driver; + +static const struct tty_port_operations noz_tty_port_ops; + +/* + * find card by tty_index + */ +static inline struct nozomi *get_dc_by_tty(const struct tty_struct *tty) +{ + return tty ? ndevs[tty->index / MAX_PORT] : NULL; +} + +static inline struct port *get_port_by_tty(const struct tty_struct *tty) +{ + struct nozomi *ndev = get_dc_by_tty(tty); + return ndev ? &ndev->port[tty->index % MAX_PORT] : NULL; +} + +/* + * TODO: + * -Optimize + * -Rewrite cleaner + */ + +static void read_mem32(u32 *buf, const void __iomem *mem_addr_start, + u32 size_bytes) +{ + u32 i = 0; + const u32 __iomem *ptr = mem_addr_start; + u16 *buf16; + + if (unlikely(!ptr || !buf)) + goto out; + + /* shortcut for extremely often used cases */ + switch (size_bytes) { + case 2: /* 2 bytes */ + buf16 = (u16 *) buf; + *buf16 = __le16_to_cpu(readw(ptr)); + goto out; + break; + case 4: /* 4 bytes */ + *(buf) = __le32_to_cpu(readl(ptr)); + goto out; + break; + } + + while (i < size_bytes) { + if (size_bytes - i == 2) { + /* Handle 2 bytes in the end */ + buf16 = (u16 *) buf; + *(buf16) = __le16_to_cpu(readw(ptr)); + i += 2; + } else { + /* Read 4 bytes */ + *(buf) = __le32_to_cpu(readl(ptr)); + i += 4; + } + buf++; + ptr++; + } +out: + return; +} + +/* + * TODO: + * -Optimize + * -Rewrite cleaner + */ +static u32 write_mem32(void __iomem *mem_addr_start, const u32 *buf, + u32 size_bytes) +{ + u32 i = 0; + u32 __iomem *ptr = mem_addr_start; + const u16 *buf16; + + if (unlikely(!ptr || !buf)) + return 0; + + /* shortcut for extremely often used cases */ + switch (size_bytes) { + case 2: /* 2 bytes */ + buf16 = (const u16 *)buf; + writew(__cpu_to_le16(*buf16), ptr); + return 2; + break; + case 1: /* + * also needs to write 4 bytes in this case + * so falling through.. + */ + case 4: /* 4 bytes */ + writel(__cpu_to_le32(*buf), ptr); + return 4; + break; + } + + while (i < size_bytes) { + if (size_bytes - i == 2) { + /* 2 bytes */ + buf16 = (const u16 *)buf; + writew(__cpu_to_le16(*buf16), ptr); + i += 2; + } else { + /* 4 bytes */ + writel(__cpu_to_le32(*buf), ptr); + i += 4; + } + buf++; + ptr++; + } + return i; +} + +/* Setup pointers to different channels and also setup buffer sizes. */ +static void setup_memory(struct nozomi *dc) +{ + void __iomem *offset = dc->base_addr + dc->config_table.dl_start; + /* The length reported is including the length field of 4 bytes, + * hence subtract with 4. + */ + const u16 buff_offset = 4; + + /* Modem port dl configuration */ + dc->port[PORT_MDM].dl_addr[CH_A] = offset; + dc->port[PORT_MDM].dl_addr[CH_B] = + (offset += dc->config_table.dl_mdm_len1); + dc->port[PORT_MDM].dl_size[CH_A] = + dc->config_table.dl_mdm_len1 - buff_offset; + dc->port[PORT_MDM].dl_size[CH_B] = + dc->config_table.dl_mdm_len2 - buff_offset; + + /* Diag port dl configuration */ + dc->port[PORT_DIAG].dl_addr[CH_A] = + (offset += dc->config_table.dl_mdm_len2); + dc->port[PORT_DIAG].dl_size[CH_A] = + dc->config_table.dl_diag_len1 - buff_offset; + dc->port[PORT_DIAG].dl_addr[CH_B] = + (offset += dc->config_table.dl_diag_len1); + dc->port[PORT_DIAG].dl_size[CH_B] = + dc->config_table.dl_diag_len2 - buff_offset; + + /* App1 port dl configuration */ + dc->port[PORT_APP1].dl_addr[CH_A] = + (offset += dc->config_table.dl_diag_len2); + dc->port[PORT_APP1].dl_size[CH_A] = + dc->config_table.dl_app1_len - buff_offset; + + /* App2 port dl configuration */ + dc->port[PORT_APP2].dl_addr[CH_A] = + (offset += dc->config_table.dl_app1_len); + dc->port[PORT_APP2].dl_size[CH_A] = + dc->config_table.dl_app2_len - buff_offset; + + /* Ctrl dl configuration */ + dc->port[PORT_CTRL].dl_addr[CH_A] = + (offset += dc->config_table.dl_app2_len); + dc->port[PORT_CTRL].dl_size[CH_A] = + dc->config_table.dl_ctrl_len - buff_offset; + + offset = dc->base_addr + dc->config_table.ul_start; + + /* Modem Port ul configuration */ + dc->port[PORT_MDM].ul_addr[CH_A] = offset; + dc->port[PORT_MDM].ul_size[CH_A] = + dc->config_table.ul_mdm_len1 - buff_offset; + dc->port[PORT_MDM].ul_addr[CH_B] = + (offset += dc->config_table.ul_mdm_len1); + dc->port[PORT_MDM].ul_size[CH_B] = + dc->config_table.ul_mdm_len2 - buff_offset; + + /* Diag port ul configuration */ + dc->port[PORT_DIAG].ul_addr[CH_A] = + (offset += dc->config_table.ul_mdm_len2); + dc->port[PORT_DIAG].ul_size[CH_A] = + dc->config_table.ul_diag_len - buff_offset; + + /* App1 port ul configuration */ + dc->port[PORT_APP1].ul_addr[CH_A] = + (offset += dc->config_table.ul_diag_len); + dc->port[PORT_APP1].ul_size[CH_A] = + dc->config_table.ul_app1_len - buff_offset; + + /* App2 port ul configuration */ + dc->port[PORT_APP2].ul_addr[CH_A] = + (offset += dc->config_table.ul_app1_len); + dc->port[PORT_APP2].ul_size[CH_A] = + dc->config_table.ul_app2_len - buff_offset; + + /* Ctrl ul configuration */ + dc->port[PORT_CTRL].ul_addr[CH_A] = + (offset += dc->config_table.ul_app2_len); + dc->port[PORT_CTRL].ul_size[CH_A] = + dc->config_table.ul_ctrl_len - buff_offset; +} + +/* Dump config table under initalization phase */ +#ifdef DEBUG +static void dump_table(const struct nozomi *dc) +{ + DBG3("signature: 0x%08X", dc->config_table.signature); + DBG3("version: 0x%04X", dc->config_table.version); + DBG3("product_information: 0x%04X", \ + dc->config_table.product_information); + DBG3("toggle enabled: %d", dc->config_table.toggle.enabled); + DBG3("toggle up_mdm: %d", dc->config_table.toggle.mdm_ul); + DBG3("toggle dl_mdm: %d", dc->config_table.toggle.mdm_dl); + DBG3("toggle dl_dbg: %d", dc->config_table.toggle.diag_dl); + + DBG3("dl_start: 0x%04X", dc->config_table.dl_start); + DBG3("dl_mdm_len0: 0x%04X, %d", dc->config_table.dl_mdm_len1, + dc->config_table.dl_mdm_len1); + DBG3("dl_mdm_len1: 0x%04X, %d", dc->config_table.dl_mdm_len2, + dc->config_table.dl_mdm_len2); + DBG3("dl_diag_len0: 0x%04X, %d", dc->config_table.dl_diag_len1, + dc->config_table.dl_diag_len1); + DBG3("dl_diag_len1: 0x%04X, %d", dc->config_table.dl_diag_len2, + dc->config_table.dl_diag_len2); + DBG3("dl_app1_len: 0x%04X, %d", dc->config_table.dl_app1_len, + dc->config_table.dl_app1_len); + DBG3("dl_app2_len: 0x%04X, %d", dc->config_table.dl_app2_len, + dc->config_table.dl_app2_len); + DBG3("dl_ctrl_len: 0x%04X, %d", dc->config_table.dl_ctrl_len, + dc->config_table.dl_ctrl_len); + DBG3("ul_start: 0x%04X, %d", dc->config_table.ul_start, + dc->config_table.ul_start); + DBG3("ul_mdm_len[0]: 0x%04X, %d", dc->config_table.ul_mdm_len1, + dc->config_table.ul_mdm_len1); + DBG3("ul_mdm_len[1]: 0x%04X, %d", dc->config_table.ul_mdm_len2, + dc->config_table.ul_mdm_len2); + DBG3("ul_diag_len: 0x%04X, %d", dc->config_table.ul_diag_len, + dc->config_table.ul_diag_len); + DBG3("ul_app1_len: 0x%04X, %d", dc->config_table.ul_app1_len, + dc->config_table.ul_app1_len); + DBG3("ul_app2_len: 0x%04X, %d", dc->config_table.ul_app2_len, + dc->config_table.ul_app2_len); + DBG3("ul_ctrl_len: 0x%04X, %d", dc->config_table.ul_ctrl_len, + dc->config_table.ul_ctrl_len); +} +#else +static inline void dump_table(const struct nozomi *dc) { } +#endif + +/* + * Read configuration table from card under intalization phase + * Returns 1 if ok, else 0 + */ +static int nozomi_read_config_table(struct nozomi *dc) +{ + read_mem32((u32 *) &dc->config_table, dc->base_addr + 0, + sizeof(struct config_table)); + + if (dc->config_table.signature != CONFIG_MAGIC) { + dev_err(&dc->pdev->dev, "ConfigTable Bad! 0x%08X != 0x%08X\n", + dc->config_table.signature, CONFIG_MAGIC); + return 0; + } + + if ((dc->config_table.version == 0) + || (dc->config_table.toggle.enabled == TOGGLE_VALID)) { + int i; + DBG1("Second phase, configuring card"); + + setup_memory(dc); + + dc->port[PORT_MDM].toggle_ul = dc->config_table.toggle.mdm_ul; + dc->port[PORT_MDM].toggle_dl = dc->config_table.toggle.mdm_dl; + dc->port[PORT_DIAG].toggle_dl = dc->config_table.toggle.diag_dl; + DBG1("toggle ports: MDM UL:%d MDM DL:%d, DIAG DL:%d", + dc->port[PORT_MDM].toggle_ul, + dc->port[PORT_MDM].toggle_dl, dc->port[PORT_DIAG].toggle_dl); + + dump_table(dc); + + for (i = PORT_MDM; i < MAX_PORT; i++) { + memset(&dc->port[i].ctrl_dl, 0, sizeof(struct ctrl_dl)); + memset(&dc->port[i].ctrl_ul, 0, sizeof(struct ctrl_ul)); + } + + /* Enable control channel */ + dc->last_ier = dc->last_ier | CTRL_DL; + writew(dc->last_ier, dc->reg_ier); + + dc->state = NOZOMI_STATE_ALLOCATED; + dev_info(&dc->pdev->dev, "Initialization OK!\n"); + return 1; + } + + if ((dc->config_table.version > 0) + && (dc->config_table.toggle.enabled != TOGGLE_VALID)) { + u32 offset = 0; + DBG1("First phase: pushing upload buffers, clearing download"); + + dev_info(&dc->pdev->dev, "Version of card: %d\n", + dc->config_table.version); + + /* Here we should disable all I/O over F32. */ + setup_memory(dc); + + /* + * We should send ALL channel pair tokens back along + * with reset token + */ + + /* push upload modem buffers */ + write_mem32(dc->port[PORT_MDM].ul_addr[CH_A], + (u32 *) &offset, 4); + write_mem32(dc->port[PORT_MDM].ul_addr[CH_B], + (u32 *) &offset, 4); + + writew(MDM_UL | DIAG_DL | MDM_DL, dc->reg_fcr); + + DBG1("First phase done"); + } + + return 1; +} + +/* Enable uplink interrupts */ +static void enable_transmit_ul(enum port_type port, struct nozomi *dc) +{ + static const u16 mask[] = {MDM_UL, DIAG_UL, APP1_UL, APP2_UL, CTRL_UL}; + + if (port < NOZOMI_MAX_PORTS) { + dc->last_ier |= mask[port]; + writew(dc->last_ier, dc->reg_ier); + } else { + dev_err(&dc->pdev->dev, "Called with wrong port?\n"); + } +} + +/* Disable uplink interrupts */ +static void disable_transmit_ul(enum port_type port, struct nozomi *dc) +{ + static const u16 mask[] = + {~MDM_UL, ~DIAG_UL, ~APP1_UL, ~APP2_UL, ~CTRL_UL}; + + if (port < NOZOMI_MAX_PORTS) { + dc->last_ier &= mask[port]; + writew(dc->last_ier, dc->reg_ier); + } else { + dev_err(&dc->pdev->dev, "Called with wrong port?\n"); + } +} + +/* Enable downlink interrupts */ +static void enable_transmit_dl(enum port_type port, struct nozomi *dc) +{ + static const u16 mask[] = {MDM_DL, DIAG_DL, APP1_DL, APP2_DL, CTRL_DL}; + + if (port < NOZOMI_MAX_PORTS) { + dc->last_ier |= mask[port]; + writew(dc->last_ier, dc->reg_ier); + } else { + dev_err(&dc->pdev->dev, "Called with wrong port?\n"); + } +} + +/* Disable downlink interrupts */ +static void disable_transmit_dl(enum port_type port, struct nozomi *dc) +{ + static const u16 mask[] = + {~MDM_DL, ~DIAG_DL, ~APP1_DL, ~APP2_DL, ~CTRL_DL}; + + if (port < NOZOMI_MAX_PORTS) { + dc->last_ier &= mask[port]; + writew(dc->last_ier, dc->reg_ier); + } else { + dev_err(&dc->pdev->dev, "Called with wrong port?\n"); + } +} + +/* + * Return 1 - send buffer to card and ack. + * Return 0 - don't ack, don't send buffer to card. + */ +static int send_data(enum port_type index, struct nozomi *dc) +{ + u32 size = 0; + struct port *port = &dc->port[index]; + const u8 toggle = port->toggle_ul; + void __iomem *addr = port->ul_addr[toggle]; + const u32 ul_size = port->ul_size[toggle]; + struct tty_struct *tty = tty_port_tty_get(&port->port); + + /* Get data from tty and place in buf for now */ + size = kfifo_out(&port->fifo_ul, dc->send_buf, + ul_size < SEND_BUF_MAX ? ul_size : SEND_BUF_MAX); + + if (size == 0) { + DBG4("No more data to send, disable link:"); + tty_kref_put(tty); + return 0; + } + + /* DUMP(buf, size); */ + + /* Write length + data */ + write_mem32(addr, (u32 *) &size, 4); + write_mem32(addr + 4, (u32 *) dc->send_buf, size); + + if (tty) + tty_wakeup(tty); + + tty_kref_put(tty); + return 1; +} + +/* If all data has been read, return 1, else 0 */ +static int receive_data(enum port_type index, struct nozomi *dc) +{ + u8 buf[RECEIVE_BUF_MAX] = { 0 }; + int size; + u32 offset = 4; + struct port *port = &dc->port[index]; + void __iomem *addr = port->dl_addr[port->toggle_dl]; + struct tty_struct *tty = tty_port_tty_get(&port->port); + int i, ret; + + if (unlikely(!tty)) { + DBG1("tty not open for port: %d?", index); + return 1; + } + + read_mem32((u32 *) &size, addr, 4); + /* DBG1( "%d bytes port: %d", size, index); */ + + if (test_bit(TTY_THROTTLED, &tty->flags)) { + DBG1("No room in tty, don't read data, don't ack interrupt, " + "disable interrupt"); + + /* disable interrupt in downlink... */ + disable_transmit_dl(index, dc); + ret = 0; + goto put; + } + + if (unlikely(size == 0)) { + dev_err(&dc->pdev->dev, "size == 0?\n"); + ret = 1; + goto put; + } + + while (size > 0) { + read_mem32((u32 *) buf, addr + offset, RECEIVE_BUF_MAX); + + if (size == 1) { + tty_insert_flip_char(tty, buf[0], TTY_NORMAL); + size = 0; + } else if (size < RECEIVE_BUF_MAX) { + size -= tty_insert_flip_string(tty, (char *) buf, size); + } else { + i = tty_insert_flip_string(tty, \ + (char *) buf, RECEIVE_BUF_MAX); + size -= i; + offset += i; + } + } + + set_bit(index, &dc->flip); + ret = 1; +put: + tty_kref_put(tty); + return ret; +} + +/* Debug for interrupts */ +#ifdef DEBUG +static char *interrupt2str(u16 interrupt) +{ + static char buf[TMP_BUF_MAX]; + char *p = buf; + + interrupt & MDM_DL1 ? p += snprintf(p, TMP_BUF_MAX, "MDM_DL1 ") : NULL; + interrupt & MDM_DL2 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "MDM_DL2 ") : NULL; + + interrupt & MDM_UL1 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "MDM_UL1 ") : NULL; + interrupt & MDM_UL2 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "MDM_UL2 ") : NULL; + + interrupt & DIAG_DL1 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "DIAG_DL1 ") : NULL; + interrupt & DIAG_DL2 ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "DIAG_DL2 ") : NULL; + + interrupt & DIAG_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "DIAG_UL ") : NULL; + + interrupt & APP1_DL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "APP1_DL ") : NULL; + interrupt & APP2_DL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "APP2_DL ") : NULL; + + interrupt & APP1_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "APP1_UL ") : NULL; + interrupt & APP2_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "APP2_UL ") : NULL; + + interrupt & CTRL_DL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "CTRL_DL ") : NULL; + interrupt & CTRL_UL ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "CTRL_UL ") : NULL; + + interrupt & RESET ? p += snprintf(p, TMP_BUF_MAX - (p - buf), + "RESET ") : NULL; + + return buf; +} +#endif + +/* + * Receive flow control + * Return 1 - If ok, else 0 + */ +static int receive_flow_control(struct nozomi *dc) +{ + enum port_type port = PORT_MDM; + struct ctrl_dl ctrl_dl; + struct ctrl_dl old_ctrl; + u16 enable_ier = 0; + + read_mem32((u32 *) &ctrl_dl, dc->port[PORT_CTRL].dl_addr[CH_A], 2); + + switch (ctrl_dl.port) { + case CTRL_CMD: + DBG1("The Base Band sends this value as a response to a " + "request for IMSI detach sent over the control " + "channel uplink (see section 7.6.1)."); + break; + case CTRL_MDM: + port = PORT_MDM; + enable_ier = MDM_DL; + break; + case CTRL_DIAG: + port = PORT_DIAG; + enable_ier = DIAG_DL; + break; + case CTRL_APP1: + port = PORT_APP1; + enable_ier = APP1_DL; + break; + case CTRL_APP2: + port = PORT_APP2; + enable_ier = APP2_DL; + if (dc->state == NOZOMI_STATE_ALLOCATED) { + /* + * After card initialization the flow control + * received for APP2 is always the last + */ + dc->state = NOZOMI_STATE_READY; + dev_info(&dc->pdev->dev, "Device READY!\n"); + } + break; + default: + dev_err(&dc->pdev->dev, + "ERROR: flow control received for non-existing port\n"); + return 0; + }; + + DBG1("0x%04X->0x%04X", *((u16 *)&dc->port[port].ctrl_dl), + *((u16 *)&ctrl_dl)); + + old_ctrl = dc->port[port].ctrl_dl; + dc->port[port].ctrl_dl = ctrl_dl; + + if (old_ctrl.CTS == 1 && ctrl_dl.CTS == 0) { + DBG1("Disable interrupt (0x%04X) on port: %d", + enable_ier, port); + disable_transmit_ul(port, dc); + + } else if (old_ctrl.CTS == 0 && ctrl_dl.CTS == 1) { + + if (kfifo_len(&dc->port[port].fifo_ul)) { + DBG1("Enable interrupt (0x%04X) on port: %d", + enable_ier, port); + DBG1("Data in buffer [%d], enable transmit! ", + kfifo_len(&dc->port[port].fifo_ul)); + enable_transmit_ul(port, dc); + } else { + DBG1("No data in buffer..."); + } + } + + if (*(u16 *)&old_ctrl == *(u16 *)&ctrl_dl) { + DBG1(" No change in mctrl"); + return 1; + } + /* Update statistics */ + if (old_ctrl.CTS != ctrl_dl.CTS) + dc->port[port].tty_icount.cts++; + if (old_ctrl.DSR != ctrl_dl.DSR) + dc->port[port].tty_icount.dsr++; + if (old_ctrl.RI != ctrl_dl.RI) + dc->port[port].tty_icount.rng++; + if (old_ctrl.DCD != ctrl_dl.DCD) + dc->port[port].tty_icount.dcd++; + + wake_up_interruptible(&dc->port[port].tty_wait); + + DBG1("port: %d DCD(%d), CTS(%d), RI(%d), DSR(%d)", + port, + dc->port[port].tty_icount.dcd, dc->port[port].tty_icount.cts, + dc->port[port].tty_icount.rng, dc->port[port].tty_icount.dsr); + + return 1; +} + +static enum ctrl_port_type port2ctrl(enum port_type port, + const struct nozomi *dc) +{ + switch (port) { + case PORT_MDM: + return CTRL_MDM; + case PORT_DIAG: + return CTRL_DIAG; + case PORT_APP1: + return CTRL_APP1; + case PORT_APP2: + return CTRL_APP2; + default: + dev_err(&dc->pdev->dev, + "ERROR: send flow control " \ + "received for non-existing port\n"); + }; + return CTRL_ERROR; +} + +/* + * Send flow control, can only update one channel at a time + * Return 0 - If we have updated all flow control + * Return 1 - If we need to update more flow control, ack current enable more + */ +static int send_flow_control(struct nozomi *dc) +{ + u32 i, more_flow_control_to_be_updated = 0; + u16 *ctrl; + + for (i = PORT_MDM; i < MAX_PORT; i++) { + if (dc->port[i].update_flow_control) { + if (more_flow_control_to_be_updated) { + /* We have more flow control to be updated */ + return 1; + } + dc->port[i].ctrl_ul.port = port2ctrl(i, dc); + ctrl = (u16 *)&dc->port[i].ctrl_ul; + write_mem32(dc->port[PORT_CTRL].ul_addr[0], \ + (u32 *) ctrl, 2); + dc->port[i].update_flow_control = 0; + more_flow_control_to_be_updated = 1; + } + } + return 0; +} + +/* + * Handle downlink data, ports that are handled are modem and diagnostics + * Return 1 - ok + * Return 0 - toggle fields are out of sync + */ +static int handle_data_dl(struct nozomi *dc, enum port_type port, u8 *toggle, + u16 read_iir, u16 mask1, u16 mask2) +{ + if (*toggle == 0 && read_iir & mask1) { + if (receive_data(port, dc)) { + writew(mask1, dc->reg_fcr); + *toggle = !(*toggle); + } + + if (read_iir & mask2) { + if (receive_data(port, dc)) { + writew(mask2, dc->reg_fcr); + *toggle = !(*toggle); + } + } + } else if (*toggle == 1 && read_iir & mask2) { + if (receive_data(port, dc)) { + writew(mask2, dc->reg_fcr); + *toggle = !(*toggle); + } + + if (read_iir & mask1) { + if (receive_data(port, dc)) { + writew(mask1, dc->reg_fcr); + *toggle = !(*toggle); + } + } + } else { + dev_err(&dc->pdev->dev, "port out of sync!, toggle:%d\n", + *toggle); + return 0; + } + return 1; +} + +/* + * Handle uplink data, this is currently for the modem port + * Return 1 - ok + * Return 0 - toggle field are out of sync + */ +static int handle_data_ul(struct nozomi *dc, enum port_type port, u16 read_iir) +{ + u8 *toggle = &(dc->port[port].toggle_ul); + + if (*toggle == 0 && read_iir & MDM_UL1) { + dc->last_ier &= ~MDM_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_data(port, dc)) { + writew(MDM_UL1, dc->reg_fcr); + dc->last_ier = dc->last_ier | MDM_UL; + writew(dc->last_ier, dc->reg_ier); + *toggle = !*toggle; + } + + if (read_iir & MDM_UL2) { + dc->last_ier &= ~MDM_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_data(port, dc)) { + writew(MDM_UL2, dc->reg_fcr); + dc->last_ier = dc->last_ier | MDM_UL; + writew(dc->last_ier, dc->reg_ier); + *toggle = !*toggle; + } + } + + } else if (*toggle == 1 && read_iir & MDM_UL2) { + dc->last_ier &= ~MDM_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_data(port, dc)) { + writew(MDM_UL2, dc->reg_fcr); + dc->last_ier = dc->last_ier | MDM_UL; + writew(dc->last_ier, dc->reg_ier); + *toggle = !*toggle; + } + + if (read_iir & MDM_UL1) { + dc->last_ier &= ~MDM_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_data(port, dc)) { + writew(MDM_UL1, dc->reg_fcr); + dc->last_ier = dc->last_ier | MDM_UL; + writew(dc->last_ier, dc->reg_ier); + *toggle = !*toggle; + } + } + } else { + writew(read_iir & MDM_UL, dc->reg_fcr); + dev_err(&dc->pdev->dev, "port out of sync!\n"); + return 0; + } + return 1; +} + +static irqreturn_t interrupt_handler(int irq, void *dev_id) +{ + struct nozomi *dc = dev_id; + unsigned int a; + u16 read_iir; + + if (!dc) + return IRQ_NONE; + + spin_lock(&dc->spin_mutex); + read_iir = readw(dc->reg_iir); + + /* Card removed */ + if (read_iir == (u16)-1) + goto none; + /* + * Just handle interrupt enabled in IER + * (by masking with dc->last_ier) + */ + read_iir &= dc->last_ier; + + if (read_iir == 0) + goto none; + + + DBG4("%s irq:0x%04X, prev:0x%04X", interrupt2str(read_iir), read_iir, + dc->last_ier); + + if (read_iir & RESET) { + if (unlikely(!nozomi_read_config_table(dc))) { + dc->last_ier = 0x0; + writew(dc->last_ier, dc->reg_ier); + dev_err(&dc->pdev->dev, "Could not read status from " + "card, we should disable interface\n"); + } else { + writew(RESET, dc->reg_fcr); + } + /* No more useful info if this was the reset interrupt. */ + goto exit_handler; + } + if (read_iir & CTRL_UL) { + DBG1("CTRL_UL"); + dc->last_ier &= ~CTRL_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_flow_control(dc)) { + writew(CTRL_UL, dc->reg_fcr); + dc->last_ier = dc->last_ier | CTRL_UL; + writew(dc->last_ier, dc->reg_ier); + } + } + if (read_iir & CTRL_DL) { + receive_flow_control(dc); + writew(CTRL_DL, dc->reg_fcr); + } + if (read_iir & MDM_DL) { + if (!handle_data_dl(dc, PORT_MDM, + &(dc->port[PORT_MDM].toggle_dl), read_iir, + MDM_DL1, MDM_DL2)) { + dev_err(&dc->pdev->dev, "MDM_DL out of sync!\n"); + goto exit_handler; + } + } + if (read_iir & MDM_UL) { + if (!handle_data_ul(dc, PORT_MDM, read_iir)) { + dev_err(&dc->pdev->dev, "MDM_UL out of sync!\n"); + goto exit_handler; + } + } + if (read_iir & DIAG_DL) { + if (!handle_data_dl(dc, PORT_DIAG, + &(dc->port[PORT_DIAG].toggle_dl), read_iir, + DIAG_DL1, DIAG_DL2)) { + dev_err(&dc->pdev->dev, "DIAG_DL out of sync!\n"); + goto exit_handler; + } + } + if (read_iir & DIAG_UL) { + dc->last_ier &= ~DIAG_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_data(PORT_DIAG, dc)) { + writew(DIAG_UL, dc->reg_fcr); + dc->last_ier = dc->last_ier | DIAG_UL; + writew(dc->last_ier, dc->reg_ier); + } + } + if (read_iir & APP1_DL) { + if (receive_data(PORT_APP1, dc)) + writew(APP1_DL, dc->reg_fcr); + } + if (read_iir & APP1_UL) { + dc->last_ier &= ~APP1_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_data(PORT_APP1, dc)) { + writew(APP1_UL, dc->reg_fcr); + dc->last_ier = dc->last_ier | APP1_UL; + writew(dc->last_ier, dc->reg_ier); + } + } + if (read_iir & APP2_DL) { + if (receive_data(PORT_APP2, dc)) + writew(APP2_DL, dc->reg_fcr); + } + if (read_iir & APP2_UL) { + dc->last_ier &= ~APP2_UL; + writew(dc->last_ier, dc->reg_ier); + if (send_data(PORT_APP2, dc)) { + writew(APP2_UL, dc->reg_fcr); + dc->last_ier = dc->last_ier | APP2_UL; + writew(dc->last_ier, dc->reg_ier); + } + } + +exit_handler: + spin_unlock(&dc->spin_mutex); + for (a = 0; a < NOZOMI_MAX_PORTS; a++) { + struct tty_struct *tty; + if (test_and_clear_bit(a, &dc->flip)) { + tty = tty_port_tty_get(&dc->port[a].port); + if (tty) + tty_flip_buffer_push(tty); + tty_kref_put(tty); + } + } + return IRQ_HANDLED; +none: + spin_unlock(&dc->spin_mutex); + return IRQ_NONE; +} + +static void nozomi_get_card_type(struct nozomi *dc) +{ + int i; + u32 size = 0; + + for (i = 0; i < 6; i++) + size += pci_resource_len(dc->pdev, i); + + /* Assume card type F32_8 if no match */ + dc->card_type = size == 2048 ? F32_2 : F32_8; + + dev_info(&dc->pdev->dev, "Card type is: %d\n", dc->card_type); +} + +static void nozomi_setup_private_data(struct nozomi *dc) +{ + void __iomem *offset = dc->base_addr + dc->card_type / 2; + unsigned int i; + + dc->reg_fcr = (void __iomem *)(offset + R_FCR); + dc->reg_iir = (void __iomem *)(offset + R_IIR); + dc->reg_ier = (void __iomem *)(offset + R_IER); + dc->last_ier = 0; + dc->flip = 0; + + dc->port[PORT_MDM].token_dl = MDM_DL; + dc->port[PORT_DIAG].token_dl = DIAG_DL; + dc->port[PORT_APP1].token_dl = APP1_DL; + dc->port[PORT_APP2].token_dl = APP2_DL; + + for (i = 0; i < MAX_PORT; i++) + init_waitqueue_head(&dc->port[i].tty_wait); +} + +static ssize_t card_type_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + const struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev)); + + return sprintf(buf, "%d\n", dc->card_type); +} +static DEVICE_ATTR(card_type, S_IRUGO, card_type_show, NULL); + +static ssize_t open_ttys_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + const struct nozomi *dc = pci_get_drvdata(to_pci_dev(dev)); + + return sprintf(buf, "%u\n", dc->open_ttys); +} +static DEVICE_ATTR(open_ttys, S_IRUGO, open_ttys_show, NULL); + +static void make_sysfs_files(struct nozomi *dc) +{ + if (device_create_file(&dc->pdev->dev, &dev_attr_card_type)) + dev_err(&dc->pdev->dev, + "Could not create sysfs file for card_type\n"); + if (device_create_file(&dc->pdev->dev, &dev_attr_open_ttys)) + dev_err(&dc->pdev->dev, + "Could not create sysfs file for open_ttys\n"); +} + +static void remove_sysfs_files(struct nozomi *dc) +{ + device_remove_file(&dc->pdev->dev, &dev_attr_card_type); + device_remove_file(&dc->pdev->dev, &dev_attr_open_ttys); +} + +/* Allocate memory for one device */ +static int __devinit nozomi_card_init(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + resource_size_t start; + int ret; + struct nozomi *dc = NULL; + int ndev_idx; + int i; + + dev_dbg(&pdev->dev, "Init, new card found\n"); + + for (ndev_idx = 0; ndev_idx < ARRAY_SIZE(ndevs); ndev_idx++) + if (!ndevs[ndev_idx]) + break; + + if (ndev_idx >= ARRAY_SIZE(ndevs)) { + dev_err(&pdev->dev, "no free tty range for this card left\n"); + ret = -EIO; + goto err; + } + + dc = kzalloc(sizeof(struct nozomi), GFP_KERNEL); + if (unlikely(!dc)) { + dev_err(&pdev->dev, "Could not allocate memory\n"); + ret = -ENOMEM; + goto err_free; + } + + dc->pdev = pdev; + + ret = pci_enable_device(dc->pdev); + if (ret) { + dev_err(&pdev->dev, "Failed to enable PCI Device\n"); + goto err_free; + } + + ret = pci_request_regions(dc->pdev, NOZOMI_NAME); + if (ret) { + dev_err(&pdev->dev, "I/O address 0x%04x already in use\n", + (int) /* nozomi_private.io_addr */ 0); + goto err_disable_device; + } + + start = pci_resource_start(dc->pdev, 0); + if (start == 0) { + dev_err(&pdev->dev, "No I/O address for card detected\n"); + ret = -ENODEV; + goto err_rel_regs; + } + + /* Find out what card type it is */ + nozomi_get_card_type(dc); + + dc->base_addr = ioremap_nocache(start, dc->card_type); + if (!dc->base_addr) { + dev_err(&pdev->dev, "Unable to map card MMIO\n"); + ret = -ENODEV; + goto err_rel_regs; + } + + dc->send_buf = kmalloc(SEND_BUF_MAX, GFP_KERNEL); + if (!dc->send_buf) { + dev_err(&pdev->dev, "Could not allocate send buffer?\n"); + ret = -ENOMEM; + goto err_free_sbuf; + } + + for (i = PORT_MDM; i < MAX_PORT; i++) { + if (kfifo_alloc(&dc->port[i].fifo_ul, + FIFO_BUFFER_SIZE_UL, GFP_ATOMIC)) { + dev_err(&pdev->dev, + "Could not allocate kfifo buffer\n"); + ret = -ENOMEM; + goto err_free_kfifo; + } + } + + spin_lock_init(&dc->spin_mutex); + + nozomi_setup_private_data(dc); + + /* Disable all interrupts */ + dc->last_ier = 0; + writew(dc->last_ier, dc->reg_ier); + + ret = request_irq(pdev->irq, &interrupt_handler, IRQF_SHARED, + NOZOMI_NAME, dc); + if (unlikely(ret)) { + dev_err(&pdev->dev, "can't request irq %d\n", pdev->irq); + goto err_free_kfifo; + } + + DBG1("base_addr: %p", dc->base_addr); + + make_sysfs_files(dc); + + dc->index_start = ndev_idx * MAX_PORT; + ndevs[ndev_idx] = dc; + + pci_set_drvdata(pdev, dc); + + /* Enable RESET interrupt */ + dc->last_ier = RESET; + iowrite16(dc->last_ier, dc->reg_ier); + + dc->state = NOZOMI_STATE_ENABLED; + + for (i = 0; i < MAX_PORT; i++) { + struct device *tty_dev; + struct port *port = &dc->port[i]; + port->dc = dc; + mutex_init(&port->tty_sem); + tty_port_init(&port->port); + port->port.ops = &noz_tty_port_ops; + tty_dev = tty_register_device(ntty_driver, dc->index_start + i, + &pdev->dev); + + if (IS_ERR(tty_dev)) { + ret = PTR_ERR(tty_dev); + dev_err(&pdev->dev, "Could not allocate tty?\n"); + goto err_free_tty; + } + } + + return 0; + +err_free_tty: + for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i) + tty_unregister_device(ntty_driver, i); +err_free_kfifo: + for (i = 0; i < MAX_PORT; i++) + kfifo_free(&dc->port[i].fifo_ul); +err_free_sbuf: + kfree(dc->send_buf); + iounmap(dc->base_addr); +err_rel_regs: + pci_release_regions(pdev); +err_disable_device: + pci_disable_device(pdev); +err_free: + kfree(dc); +err: + return ret; +} + +static void __devexit tty_exit(struct nozomi *dc) +{ + unsigned int i; + + DBG1(" "); + + flush_scheduled_work(); + + for (i = 0; i < MAX_PORT; ++i) { + struct tty_struct *tty = tty_port_tty_get(&dc->port[i].port); + if (tty && list_empty(&tty->hangup_work.entry)) + tty_hangup(tty); + tty_kref_put(tty); + } + /* Racy below - surely should wait for scheduled work to be done or + complete off a hangup method ? */ + while (dc->open_ttys) + msleep(1); + for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i) + tty_unregister_device(ntty_driver, i); +} + +/* Deallocate memory for one device */ +static void __devexit nozomi_card_exit(struct pci_dev *pdev) +{ + int i; + struct ctrl_ul ctrl; + struct nozomi *dc = pci_get_drvdata(pdev); + + /* Disable all interrupts */ + dc->last_ier = 0; + writew(dc->last_ier, dc->reg_ier); + + tty_exit(dc); + + /* Send 0x0001, command card to resend the reset token. */ + /* This is to get the reset when the module is reloaded. */ + ctrl.port = 0x00; + ctrl.reserved = 0; + ctrl.RTS = 0; + ctrl.DTR = 1; + DBG1("sending flow control 0x%04X", *((u16 *)&ctrl)); + + /* Setup dc->reg addresses to we can use defines here */ + write_mem32(dc->port[PORT_CTRL].ul_addr[0], (u32 *)&ctrl, 2); + writew(CTRL_UL, dc->reg_fcr); /* push the token to the card. */ + + remove_sysfs_files(dc); + + free_irq(pdev->irq, dc); + + for (i = 0; i < MAX_PORT; i++) + kfifo_free(&dc->port[i].fifo_ul); + + kfree(dc->send_buf); + + iounmap(dc->base_addr); + + pci_release_regions(pdev); + + pci_disable_device(pdev); + + ndevs[dc->index_start / MAX_PORT] = NULL; + + kfree(dc); +} + +static void set_rts(const struct tty_struct *tty, int rts) +{ + struct port *port = get_port_by_tty(tty); + + port->ctrl_ul.RTS = rts; + port->update_flow_control = 1; + enable_transmit_ul(PORT_CTRL, get_dc_by_tty(tty)); +} + +static void set_dtr(const struct tty_struct *tty, int dtr) +{ + struct port *port = get_port_by_tty(tty); + + DBG1("SETTING DTR index: %d, dtr: %d", tty->index, dtr); + + port->ctrl_ul.DTR = dtr; + port->update_flow_control = 1; + enable_transmit_ul(PORT_CTRL, get_dc_by_tty(tty)); +} + +/* + * ---------------------------------------------------------------------------- + * TTY code + * ---------------------------------------------------------------------------- + */ + +static int ntty_install(struct tty_driver *driver, struct tty_struct *tty) +{ + struct port *port = get_port_by_tty(tty); + struct nozomi *dc = get_dc_by_tty(tty); + int ret; + if (!port || !dc || dc->state != NOZOMI_STATE_READY) + return -ENODEV; + ret = tty_init_termios(tty); + if (ret == 0) { + tty_driver_kref_get(driver); + tty->count++; + tty->driver_data = port; + driver->ttys[tty->index] = tty; + } + return ret; +} + +static void ntty_cleanup(struct tty_struct *tty) +{ + tty->driver_data = NULL; +} + +static int ntty_activate(struct tty_port *tport, struct tty_struct *tty) +{ + struct port *port = container_of(tport, struct port, port); + struct nozomi *dc = port->dc; + unsigned long flags; + + DBG1("open: %d", port->token_dl); + spin_lock_irqsave(&dc->spin_mutex, flags); + dc->last_ier = dc->last_ier | port->token_dl; + writew(dc->last_ier, dc->reg_ier); + dc->open_ttys++; + spin_unlock_irqrestore(&dc->spin_mutex, flags); + printk("noz: activated %d: %p\n", tty->index, tport); + return 0; +} + +static int ntty_open(struct tty_struct *tty, struct file *filp) +{ + struct port *port = tty->driver_data; + return tty_port_open(&port->port, tty, filp); +} + +static void ntty_shutdown(struct tty_port *tport) +{ + struct port *port = container_of(tport, struct port, port); + struct nozomi *dc = port->dc; + unsigned long flags; + + DBG1("close: %d", port->token_dl); + spin_lock_irqsave(&dc->spin_mutex, flags); + dc->last_ier &= ~(port->token_dl); + writew(dc->last_ier, dc->reg_ier); + dc->open_ttys--; + spin_unlock_irqrestore(&dc->spin_mutex, flags); + printk("noz: shutdown %p\n", tport); +} + +static void ntty_close(struct tty_struct *tty, struct file *filp) +{ + struct port *port = tty->driver_data; + if (port) + tty_port_close(&port->port, tty, filp); +} + +static void ntty_hangup(struct tty_struct *tty) +{ + struct port *port = tty->driver_data; + tty_port_hangup(&port->port); +} + +/* + * called when the userspace process writes to the tty (/dev/noz*). + * Data is inserted into a fifo, which is then read and transfered to the modem. + */ +static int ntty_write(struct tty_struct *tty, const unsigned char *buffer, + int count) +{ + int rval = -EINVAL; + struct nozomi *dc = get_dc_by_tty(tty); + struct port *port = tty->driver_data; + unsigned long flags; + + /* DBG1( "WRITEx: %d, index = %d", count, index); */ + + if (!dc || !port) + return -ENODEV; + + mutex_lock(&port->tty_sem); + + if (unlikely(!port->port.count)) { + DBG1(" "); + goto exit; + } + + rval = kfifo_in(&port->fifo_ul, (unsigned char *)buffer, count); + + /* notify card */ + if (unlikely(dc == NULL)) { + DBG1("No device context?"); + goto exit; + } + + spin_lock_irqsave(&dc->spin_mutex, flags); + /* CTS is only valid on the modem channel */ + if (port == &(dc->port[PORT_MDM])) { + if (port->ctrl_dl.CTS) { + DBG4("Enable interrupt"); + enable_transmit_ul(tty->index % MAX_PORT, dc); + } else { + dev_err(&dc->pdev->dev, + "CTS not active on modem port?\n"); + } + } else { + enable_transmit_ul(tty->index % MAX_PORT, dc); + } + spin_unlock_irqrestore(&dc->spin_mutex, flags); + +exit: + mutex_unlock(&port->tty_sem); + return rval; +} + +/* + * Calculate how much is left in device + * This method is called by the upper tty layer. + * #according to sources N_TTY.c it expects a value >= 0 and + * does not check for negative values. + * + * If the port is unplugged report lots of room and let the bits + * dribble away so we don't block anything. + */ +static int ntty_write_room(struct tty_struct *tty) +{ + struct port *port = tty->driver_data; + int room = 4096; + const struct nozomi *dc = get_dc_by_tty(tty); + + if (dc) { + mutex_lock(&port->tty_sem); + if (port->port.count) + room = kfifo_avail(&port->fifo_ul); + mutex_unlock(&port->tty_sem); + } + return room; +} + +/* Gets io control parameters */ +static int ntty_tiocmget(struct tty_struct *tty) +{ + const struct port *port = tty->driver_data; + const struct ctrl_dl *ctrl_dl = &port->ctrl_dl; + const struct ctrl_ul *ctrl_ul = &port->ctrl_ul; + + /* Note: these could change under us but it is not clear this + matters if so */ + return (ctrl_ul->RTS ? TIOCM_RTS : 0) | + (ctrl_ul->DTR ? TIOCM_DTR : 0) | + (ctrl_dl->DCD ? TIOCM_CAR : 0) | + (ctrl_dl->RI ? TIOCM_RNG : 0) | + (ctrl_dl->DSR ? TIOCM_DSR : 0) | + (ctrl_dl->CTS ? TIOCM_CTS : 0); +} + +/* Sets io controls parameters */ +static int ntty_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct nozomi *dc = get_dc_by_tty(tty); + unsigned long flags; + + spin_lock_irqsave(&dc->spin_mutex, flags); + if (set & TIOCM_RTS) + set_rts(tty, 1); + else if (clear & TIOCM_RTS) + set_rts(tty, 0); + + if (set & TIOCM_DTR) + set_dtr(tty, 1); + else if (clear & TIOCM_DTR) + set_dtr(tty, 0); + spin_unlock_irqrestore(&dc->spin_mutex, flags); + + return 0; +} + +static int ntty_cflags_changed(struct port *port, unsigned long flags, + struct async_icount *cprev) +{ + const struct async_icount cnow = port->tty_icount; + int ret; + + ret = ((flags & TIOCM_RNG) && (cnow.rng != cprev->rng)) || + ((flags & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || + ((flags & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || + ((flags & TIOCM_CTS) && (cnow.cts != cprev->cts)); + + *cprev = cnow; + + return ret; +} + +static int ntty_tiocgicount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct port *port = tty->driver_data; + const struct async_icount cnow = port->tty_icount; + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + return 0; +} + +static int ntty_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct port *port = tty->driver_data; + int rval = -ENOIOCTLCMD; + + DBG1("******** IOCTL, cmd: %d", cmd); + + switch (cmd) { + case TIOCMIWAIT: { + struct async_icount cprev = port->tty_icount; + + rval = wait_event_interruptible(port->tty_wait, + ntty_cflags_changed(port, arg, &cprev)); + break; + } + default: + DBG1("ERR: 0x%08X, %d", cmd, cmd); + break; + }; + + return rval; +} + +/* + * Called by the upper tty layer when tty buffers are ready + * to receive data again after a call to throttle. + */ +static void ntty_unthrottle(struct tty_struct *tty) +{ + struct nozomi *dc = get_dc_by_tty(tty); + unsigned long flags; + + DBG1("UNTHROTTLE"); + spin_lock_irqsave(&dc->spin_mutex, flags); + enable_transmit_dl(tty->index % MAX_PORT, dc); + set_rts(tty, 1); + + spin_unlock_irqrestore(&dc->spin_mutex, flags); +} + +/* + * Called by the upper tty layer when the tty buffers are almost full. + * The driver should stop send more data. + */ +static void ntty_throttle(struct tty_struct *tty) +{ + struct nozomi *dc = get_dc_by_tty(tty); + unsigned long flags; + + DBG1("THROTTLE"); + spin_lock_irqsave(&dc->spin_mutex, flags); + set_rts(tty, 0); + spin_unlock_irqrestore(&dc->spin_mutex, flags); +} + +/* Returns number of chars in buffer, called by tty layer */ +static s32 ntty_chars_in_buffer(struct tty_struct *tty) +{ + struct port *port = tty->driver_data; + struct nozomi *dc = get_dc_by_tty(tty); + s32 rval = 0; + + if (unlikely(!dc || !port)) { + goto exit_in_buffer; + } + + if (unlikely(!port->port.count)) { + dev_err(&dc->pdev->dev, "No tty open?\n"); + goto exit_in_buffer; + } + + rval = kfifo_len(&port->fifo_ul); + +exit_in_buffer: + return rval; +} + +static const struct tty_port_operations noz_tty_port_ops = { + .activate = ntty_activate, + .shutdown = ntty_shutdown, +}; + +static const struct tty_operations tty_ops = { + .ioctl = ntty_ioctl, + .open = ntty_open, + .close = ntty_close, + .hangup = ntty_hangup, + .write = ntty_write, + .write_room = ntty_write_room, + .unthrottle = ntty_unthrottle, + .throttle = ntty_throttle, + .chars_in_buffer = ntty_chars_in_buffer, + .tiocmget = ntty_tiocmget, + .tiocmset = ntty_tiocmset, + .get_icount = ntty_tiocgicount, + .install = ntty_install, + .cleanup = ntty_cleanup, +}; + +/* Module initialization */ +static struct pci_driver nozomi_driver = { + .name = NOZOMI_NAME, + .id_table = nozomi_pci_tbl, + .probe = nozomi_card_init, + .remove = __devexit_p(nozomi_card_exit), +}; + +static __init int nozomi_init(void) +{ + int ret; + + printk(KERN_INFO "Initializing %s\n", VERSION_STRING); + + ntty_driver = alloc_tty_driver(NTTY_TTY_MAXMINORS); + if (!ntty_driver) + return -ENOMEM; + + ntty_driver->owner = THIS_MODULE; + ntty_driver->driver_name = NOZOMI_NAME_TTY; + ntty_driver->name = "noz"; + ntty_driver->major = 0; + ntty_driver->type = TTY_DRIVER_TYPE_SERIAL; + ntty_driver->subtype = SERIAL_TYPE_NORMAL; + ntty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + ntty_driver->init_termios = tty_std_termios; + ntty_driver->init_termios.c_cflag = B115200 | CS8 | CREAD | \ + HUPCL | CLOCAL; + ntty_driver->init_termios.c_ispeed = 115200; + ntty_driver->init_termios.c_ospeed = 115200; + tty_set_operations(ntty_driver, &tty_ops); + + ret = tty_register_driver(ntty_driver); + if (ret) { + printk(KERN_ERR "Nozomi: failed to register ntty driver\n"); + goto free_tty; + } + + ret = pci_register_driver(&nozomi_driver); + if (ret) { + printk(KERN_ERR "Nozomi: can't register pci driver\n"); + goto unr_tty; + } + + return 0; +unr_tty: + tty_unregister_driver(ntty_driver); +free_tty: + put_tty_driver(ntty_driver); + return ret; +} + +static __exit void nozomi_exit(void) +{ + printk(KERN_INFO "Unloading %s\n", DRIVER_DESC); + pci_unregister_driver(&nozomi_driver); + tty_unregister_driver(ntty_driver); + put_tty_driver(ntty_driver); +} + +module_init(nozomi_init); +module_exit(nozomi_exit); + +module_param(debug, int, S_IRUGO | S_IWUSR); + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c new file mode 100644 index 000000000000..3780da8ad12d --- /dev/null +++ b/drivers/tty/rocket.c @@ -0,0 +1,3199 @@ +/* + * RocketPort device driver for Linux + * + * Written by Theodore Ts'o, 1995, 1996, 1997, 1998, 1999, 2000. + * + * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003 by Comtrol, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/* + * Kernel Synchronization: + * + * This driver has 2 kernel control paths - exception handlers (calls into the driver + * from user mode) and the timer bottom half (tasklet). This is a polled driver, interrupts + * are not used. + * + * Critical data: + * - rp_table[], accessed through passed "info" pointers, is a global (static) array of + * serial port state information and the xmit_buf circular buffer. Protected by + * a per port spinlock. + * - xmit_flags[], an array of ints indexed by line (port) number, indicating that there + * is data to be transmitted. Protected by atomic bit operations. + * - rp_num_ports, int indicating number of open ports, protected by atomic operations. + * + * rp_write() and rp_write_char() functions use a per port semaphore to protect against + * simultaneous access to the same port by more than one process. + */ + +/****** Defines ******/ +#define ROCKET_PARANOIA_CHECK +#define ROCKET_DISABLE_SIMUSAGE + +#undef ROCKET_SOFT_FLOW +#undef ROCKET_DEBUG_OPEN +#undef ROCKET_DEBUG_INTR +#undef ROCKET_DEBUG_WRITE +#undef ROCKET_DEBUG_FLOW +#undef ROCKET_DEBUG_THROTTLE +#undef ROCKET_DEBUG_WAIT_UNTIL_SENT +#undef ROCKET_DEBUG_RECEIVE +#undef ROCKET_DEBUG_HANGUP +#undef REV_PCI_ORDER +#undef ROCKET_DEBUG_IO + +#define POLL_PERIOD HZ/100 /* Polling period .01 seconds (10ms) */ + +/****** Kernel includes ******/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/****** RocketPort includes ******/ + +#include "rocket_int.h" +#include "rocket.h" + +#define ROCKET_VERSION "2.09" +#define ROCKET_DATE "12-June-2003" + +/****** RocketPort Local Variables ******/ + +static void rp_do_poll(unsigned long dummy); + +static struct tty_driver *rocket_driver; + +static struct rocket_version driver_version = { + ROCKET_VERSION, ROCKET_DATE +}; + +static struct r_port *rp_table[MAX_RP_PORTS]; /* The main repository of serial port state information. */ +static unsigned int xmit_flags[NUM_BOARDS]; /* Bit significant, indicates port had data to transmit. */ + /* eg. Bit 0 indicates port 0 has xmit data, ... */ +static atomic_t rp_num_ports_open; /* Number of serial ports open */ +static DEFINE_TIMER(rocket_timer, rp_do_poll, 0, 0); + +static unsigned long board1; /* ISA addresses, retrieved from rocketport.conf */ +static unsigned long board2; +static unsigned long board3; +static unsigned long board4; +static unsigned long controller; +static int support_low_speed; +static unsigned long modem1; +static unsigned long modem2; +static unsigned long modem3; +static unsigned long modem4; +static unsigned long pc104_1[8]; +static unsigned long pc104_2[8]; +static unsigned long pc104_3[8]; +static unsigned long pc104_4[8]; +static unsigned long *pc104[4] = { pc104_1, pc104_2, pc104_3, pc104_4 }; + +static int rp_baud_base[NUM_BOARDS]; /* Board config info (Someday make a per-board structure) */ +static unsigned long rcktpt_io_addr[NUM_BOARDS]; +static int rcktpt_type[NUM_BOARDS]; +static int is_PCI[NUM_BOARDS]; +static rocketModel_t rocketModel[NUM_BOARDS]; +static int max_board; +static const struct tty_port_operations rocket_port_ops; + +/* + * The following arrays define the interrupt bits corresponding to each AIOP. + * These bits are different between the ISA and regular PCI boards and the + * Universal PCI boards. + */ + +static Word_t aiop_intr_bits[AIOP_CTL_SIZE] = { + AIOP_INTR_BIT_0, + AIOP_INTR_BIT_1, + AIOP_INTR_BIT_2, + AIOP_INTR_BIT_3 +}; + +static Word_t upci_aiop_intr_bits[AIOP_CTL_SIZE] = { + UPCI_AIOP_INTR_BIT_0, + UPCI_AIOP_INTR_BIT_1, + UPCI_AIOP_INTR_BIT_2, + UPCI_AIOP_INTR_BIT_3 +}; + +static Byte_t RData[RDATASIZE] = { + 0x00, 0x09, 0xf6, 0x82, + 0x02, 0x09, 0x86, 0xfb, + 0x04, 0x09, 0x00, 0x0a, + 0x06, 0x09, 0x01, 0x0a, + 0x08, 0x09, 0x8a, 0x13, + 0x0a, 0x09, 0xc5, 0x11, + 0x0c, 0x09, 0x86, 0x85, + 0x0e, 0x09, 0x20, 0x0a, + 0x10, 0x09, 0x21, 0x0a, + 0x12, 0x09, 0x41, 0xff, + 0x14, 0x09, 0x82, 0x00, + 0x16, 0x09, 0x82, 0x7b, + 0x18, 0x09, 0x8a, 0x7d, + 0x1a, 0x09, 0x88, 0x81, + 0x1c, 0x09, 0x86, 0x7a, + 0x1e, 0x09, 0x84, 0x81, + 0x20, 0x09, 0x82, 0x7c, + 0x22, 0x09, 0x0a, 0x0a +}; + +static Byte_t RRegData[RREGDATASIZE] = { + 0x00, 0x09, 0xf6, 0x82, /* 00: Stop Rx processor */ + 0x08, 0x09, 0x8a, 0x13, /* 04: Tx software flow control */ + 0x0a, 0x09, 0xc5, 0x11, /* 08: XON char */ + 0x0c, 0x09, 0x86, 0x85, /* 0c: XANY */ + 0x12, 0x09, 0x41, 0xff, /* 10: Rx mask char */ + 0x14, 0x09, 0x82, 0x00, /* 14: Compare/Ignore #0 */ + 0x16, 0x09, 0x82, 0x7b, /* 18: Compare #1 */ + 0x18, 0x09, 0x8a, 0x7d, /* 1c: Compare #2 */ + 0x1a, 0x09, 0x88, 0x81, /* 20: Interrupt #1 */ + 0x1c, 0x09, 0x86, 0x7a, /* 24: Ignore/Replace #1 */ + 0x1e, 0x09, 0x84, 0x81, /* 28: Interrupt #2 */ + 0x20, 0x09, 0x82, 0x7c, /* 2c: Ignore/Replace #2 */ + 0x22, 0x09, 0x0a, 0x0a /* 30: Rx FIFO Enable */ +}; + +static CONTROLLER_T sController[CTL_SIZE] = { + {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, + {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, + {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, + {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, + {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, + {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}}, + {-1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0, 0, 0, 0}, + {0, 0, 0, 0}, {-1, -1, -1, -1}, {0, 0, 0, 0}} +}; + +static Byte_t sBitMapClrTbl[8] = { + 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f +}; + +static Byte_t sBitMapSetTbl[8] = { + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 +}; + +static int sClockPrescale = 0x14; + +/* + * Line number is the ttySIx number (x), the Minor number. We + * assign them sequentially, starting at zero. The following + * array keeps track of the line number assigned to a given board/aiop/channel. + */ +static unsigned char lineNumbers[MAX_RP_PORTS]; +static unsigned long nextLineNumber; + +/***** RocketPort Static Prototypes *********/ +static int __init init_ISA(int i); +static void rp_wait_until_sent(struct tty_struct *tty, int timeout); +static void rp_flush_buffer(struct tty_struct *tty); +static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model); +static unsigned char GetLineNumber(int ctrl, int aiop, int ch); +static unsigned char SetLineNumber(int ctrl, int aiop, int ch); +static void rp_start(struct tty_struct *tty); +static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, + int ChanNum); +static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode); +static void sFlushRxFIFO(CHANNEL_T * ChP); +static void sFlushTxFIFO(CHANNEL_T * ChP); +static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags); +static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags); +static void sModemReset(CONTROLLER_T * CtlP, int chan, int on); +static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on); +static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data); +static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, + ByteIO_t * AiopIOList, int AiopIOListSize, + WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, + int PeriodicOnly, int altChanRingIndicator, + int UPCIRingInd); +static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, + ByteIO_t * AiopIOList, int AiopIOListSize, + int IRQNum, Byte_t Frequency, int PeriodicOnly); +static int sReadAiopID(ByteIO_t io); +static int sReadAiopNumChan(WordIO_t io); + +MODULE_AUTHOR("Theodore Ts'o"); +MODULE_DESCRIPTION("Comtrol RocketPort driver"); +module_param(board1, ulong, 0); +MODULE_PARM_DESC(board1, "I/O port for (ISA) board #1"); +module_param(board2, ulong, 0); +MODULE_PARM_DESC(board2, "I/O port for (ISA) board #2"); +module_param(board3, ulong, 0); +MODULE_PARM_DESC(board3, "I/O port for (ISA) board #3"); +module_param(board4, ulong, 0); +MODULE_PARM_DESC(board4, "I/O port for (ISA) board #4"); +module_param(controller, ulong, 0); +MODULE_PARM_DESC(controller, "I/O port for (ISA) rocketport controller"); +module_param(support_low_speed, bool, 0); +MODULE_PARM_DESC(support_low_speed, "1 means support 50 baud, 0 means support 460400 baud"); +module_param(modem1, ulong, 0); +MODULE_PARM_DESC(modem1, "1 means (ISA) board #1 is a RocketModem"); +module_param(modem2, ulong, 0); +MODULE_PARM_DESC(modem2, "1 means (ISA) board #2 is a RocketModem"); +module_param(modem3, ulong, 0); +MODULE_PARM_DESC(modem3, "1 means (ISA) board #3 is a RocketModem"); +module_param(modem4, ulong, 0); +MODULE_PARM_DESC(modem4, "1 means (ISA) board #4 is a RocketModem"); +module_param_array(pc104_1, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_1, "set interface types for ISA(PC104) board #1 (e.g. pc104_1=232,232,485,485,..."); +module_param_array(pc104_2, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_2, "set interface types for ISA(PC104) board #2 (e.g. pc104_2=232,232,485,485,..."); +module_param_array(pc104_3, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_3, "set interface types for ISA(PC104) board #3 (e.g. pc104_3=232,232,485,485,..."); +module_param_array(pc104_4, ulong, NULL, 0); +MODULE_PARM_DESC(pc104_4, "set interface types for ISA(PC104) board #4 (e.g. pc104_4=232,232,485,485,..."); + +static int rp_init(void); +static void rp_cleanup_module(void); + +module_init(rp_init); +module_exit(rp_cleanup_module); + + +MODULE_LICENSE("Dual BSD/GPL"); + +/*************************************************************************/ +/* Module code starts here */ + +static inline int rocket_paranoia_check(struct r_port *info, + const char *routine) +{ +#ifdef ROCKET_PARANOIA_CHECK + if (!info) + return 1; + if (info->magic != RPORT_MAGIC) { + printk(KERN_WARNING "Warning: bad magic number for rocketport " + "struct in %s\n", routine); + return 1; + } +#endif + return 0; +} + + +/* Serial port receive data function. Called (from timer poll) when an AIOPIC signals + * that receive data is present on a serial port. Pulls data from FIFO, moves it into the + * tty layer. + */ +static void rp_do_receive(struct r_port *info, + struct tty_struct *tty, + CHANNEL_t * cp, unsigned int ChanStatus) +{ + unsigned int CharNStat; + int ToRecv, wRecv, space; + unsigned char *cbuf; + + ToRecv = sGetRxCnt(cp); +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "rp_do_receive(%d)...\n", ToRecv); +#endif + if (ToRecv == 0) + return; + + /* + * if status indicates there are errored characters in the + * FIFO, then enter status mode (a word in FIFO holds + * character and status). + */ + if (ChanStatus & (RXFOVERFL | RXBREAK | RXFRAME | RXPARITY)) { + if (!(ChanStatus & STATMODE)) { +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "Entering STATMODE...\n"); +#endif + ChanStatus |= STATMODE; + sEnRxStatusMode(cp); + } + } + + /* + * if we previously entered status mode, then read down the + * FIFO one word at a time, pulling apart the character and + * the status. Update error counters depending on status + */ + if (ChanStatus & STATMODE) { +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "Ignore %x, read %x...\n", + info->ignore_status_mask, info->read_status_mask); +#endif + while (ToRecv) { + char flag; + + CharNStat = sInW(sGetTxRxDataIO(cp)); +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "%x...\n", CharNStat); +#endif + if (CharNStat & STMBREAKH) + CharNStat &= ~(STMFRAMEH | STMPARITYH); + if (CharNStat & info->ignore_status_mask) { + ToRecv--; + continue; + } + CharNStat &= info->read_status_mask; + if (CharNStat & STMBREAKH) + flag = TTY_BREAK; + else if (CharNStat & STMPARITYH) + flag = TTY_PARITY; + else if (CharNStat & STMFRAMEH) + flag = TTY_FRAME; + else if (CharNStat & STMRCVROVRH) + flag = TTY_OVERRUN; + else + flag = TTY_NORMAL; + tty_insert_flip_char(tty, CharNStat & 0xff, flag); + ToRecv--; + } + + /* + * after we've emptied the FIFO in status mode, turn + * status mode back off + */ + if (sGetRxCnt(cp) == 0) { +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "Status mode off.\n"); +#endif + sDisRxStatusMode(cp); + } + } else { + /* + * we aren't in status mode, so read down the FIFO two + * characters at time by doing repeated word IO + * transfer. + */ + space = tty_prepare_flip_string(tty, &cbuf, ToRecv); + if (space < ToRecv) { +#ifdef ROCKET_DEBUG_RECEIVE + printk(KERN_INFO "rp_do_receive:insufficient space ToRecv=%d space=%d\n", ToRecv, space); +#endif + if (space <= 0) + return; + ToRecv = space; + } + wRecv = ToRecv >> 1; + if (wRecv) + sInStrW(sGetTxRxDataIO(cp), (unsigned short *) cbuf, wRecv); + if (ToRecv & 1) + cbuf[ToRecv - 1] = sInB(sGetTxRxDataIO(cp)); + } + /* Push the data up to the tty layer */ + tty_flip_buffer_push(tty); +} + +/* + * Serial port transmit data function. Called from the timer polling loop as a + * result of a bit set in xmit_flags[], indicating data (from the tty layer) is ready + * to be sent out the serial port. Data is buffered in rp_table[line].xmit_buf, it is + * moved to the port's xmit FIFO. *info is critical data, protected by spinlocks. + */ +static void rp_do_transmit(struct r_port *info) +{ + int c; + CHANNEL_t *cp = &info->channel; + struct tty_struct *tty; + unsigned long flags; + +#ifdef ROCKET_DEBUG_INTR + printk(KERN_DEBUG "%s\n", __func__); +#endif + if (!info) + return; + tty = tty_port_tty_get(&info->port); + + if (tty == NULL) { + printk(KERN_WARNING "rp: WARNING %s called with tty==NULL\n", __func__); + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + return; + } + + spin_lock_irqsave(&info->slock, flags); + info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); + + /* Loop sending data to FIFO until done or FIFO full */ + while (1) { + if (tty->stopped || tty->hw_stopped) + break; + c = min(info->xmit_fifo_room, info->xmit_cnt); + c = min(c, XMIT_BUF_SIZE - info->xmit_tail); + if (c <= 0 || info->xmit_fifo_room <= 0) + break; + sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2); + if (c & 1) + sOutB(sGetTxRxDataIO(cp), info->xmit_buf[info->xmit_tail + c - 1]); + info->xmit_tail += c; + info->xmit_tail &= XMIT_BUF_SIZE - 1; + info->xmit_cnt -= c; + info->xmit_fifo_room -= c; +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "tx %d chars...\n", c); +#endif + } + + if (info->xmit_cnt == 0) + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + + if (info->xmit_cnt < WAKEUP_CHARS) { + tty_wakeup(tty); +#ifdef ROCKETPORT_HAVE_POLL_WAIT + wake_up_interruptible(&tty->poll_wait); +#endif + } + + spin_unlock_irqrestore(&info->slock, flags); + tty_kref_put(tty); + +#ifdef ROCKET_DEBUG_INTR + printk(KERN_DEBUG "(%d,%d,%d,%d)...\n", info->xmit_cnt, info->xmit_head, + info->xmit_tail, info->xmit_fifo_room); +#endif +} + +/* + * Called when a serial port signals it has read data in it's RX FIFO. + * It checks what interrupts are pending and services them, including + * receiving serial data. + */ +static void rp_handle_port(struct r_port *info) +{ + CHANNEL_t *cp; + struct tty_struct *tty; + unsigned int IntMask, ChanStatus; + + if (!info) + return; + + if ((info->port.flags & ASYNC_INITIALIZED) == 0) { + printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " + "info->flags & NOT_INIT\n"); + return; + } + tty = tty_port_tty_get(&info->port); + if (!tty) { + printk(KERN_WARNING "rp: WARNING: rp_handle_port called with " + "tty==NULL\n"); + return; + } + cp = &info->channel; + + IntMask = sGetChanIntID(cp) & info->intmask; +#ifdef ROCKET_DEBUG_INTR + printk(KERN_INFO "rp_interrupt %02x...\n", IntMask); +#endif + ChanStatus = sGetChanStatus(cp); + if (IntMask & RXF_TRIG) { /* Rx FIFO trigger level */ + rp_do_receive(info, tty, cp, ChanStatus); + } + if (IntMask & DELTA_CD) { /* CD change */ +#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_INTR) || defined(ROCKET_DEBUG_HANGUP)) + printk(KERN_INFO "ttyR%d CD now %s...\n", info->line, + (ChanStatus & CD_ACT) ? "on" : "off"); +#endif + if (!(ChanStatus & CD_ACT) && info->cd_status) { +#ifdef ROCKET_DEBUG_HANGUP + printk(KERN_INFO "CD drop, calling hangup.\n"); +#endif + tty_hangup(tty); + } + info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; + wake_up_interruptible(&info->port.open_wait); + } +#ifdef ROCKET_DEBUG_INTR + if (IntMask & DELTA_CTS) { /* CTS change */ + printk(KERN_INFO "CTS change...\n"); + } + if (IntMask & DELTA_DSR) { /* DSR change */ + printk(KERN_INFO "DSR change...\n"); + } +#endif + tty_kref_put(tty); +} + +/* + * The top level polling routine. Repeats every 1/100 HZ (10ms). + */ +static void rp_do_poll(unsigned long dummy) +{ + CONTROLLER_t *ctlp; + int ctrl, aiop, ch, line; + unsigned int xmitmask, i; + unsigned int CtlMask; + unsigned char AiopMask; + Word_t bit; + + /* Walk through all the boards (ctrl's) */ + for (ctrl = 0; ctrl < max_board; ctrl++) { + if (rcktpt_io_addr[ctrl] <= 0) + continue; + + /* Get a ptr to the board's control struct */ + ctlp = sCtlNumToCtlPtr(ctrl); + + /* Get the interrupt status from the board */ +#ifdef CONFIG_PCI + if (ctlp->BusType == isPCI) + CtlMask = sPCIGetControllerIntStatus(ctlp); + else +#endif + CtlMask = sGetControllerIntStatus(ctlp); + + /* Check if any AIOP read bits are set */ + for (aiop = 0; CtlMask; aiop++) { + bit = ctlp->AiopIntrBits[aiop]; + if (CtlMask & bit) { + CtlMask &= ~bit; + AiopMask = sGetAiopIntStatus(ctlp, aiop); + + /* Check if any port read bits are set */ + for (ch = 0; AiopMask; AiopMask >>= 1, ch++) { + if (AiopMask & 1) { + + /* Get the line number (/dev/ttyRx number). */ + /* Read the data from the port. */ + line = GetLineNumber(ctrl, aiop, ch); + rp_handle_port(rp_table[line]); + } + } + } + } + + xmitmask = xmit_flags[ctrl]; + + /* + * xmit_flags contains bit-significant flags, indicating there is data + * to xmit on the port. Bit 0 is port 0 on this board, bit 1 is port + * 1, ... (32 total possible). The variable i has the aiop and ch + * numbers encoded in it (port 0-7 are aiop0, 8-15 are aiop1, etc). + */ + if (xmitmask) { + for (i = 0; i < rocketModel[ctrl].numPorts; i++) { + if (xmitmask & (1 << i)) { + aiop = (i & 0x18) >> 3; + ch = i & 0x07; + line = GetLineNumber(ctrl, aiop, ch); + rp_do_transmit(rp_table[line]); + } + } + } + } + + /* + * Reset the timer so we get called at the next clock tick (10ms). + */ + if (atomic_read(&rp_num_ports_open)) + mod_timer(&rocket_timer, jiffies + POLL_PERIOD); +} + +/* + * Initializes the r_port structure for a port, as well as enabling the port on + * the board. + * Inputs: board, aiop, chan numbers + */ +static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev) +{ + unsigned rocketMode; + struct r_port *info; + int line; + CONTROLLER_T *ctlp; + + /* Get the next available line number */ + line = SetLineNumber(board, aiop, chan); + + ctlp = sCtlNumToCtlPtr(board); + + /* Get a r_port struct for the port, fill it in and save it globally, indexed by line number */ + info = kzalloc(sizeof (struct r_port), GFP_KERNEL); + if (!info) { + printk(KERN_ERR "Couldn't allocate info struct for line #%d\n", + line); + return; + } + + info->magic = RPORT_MAGIC; + info->line = line; + info->ctlp = ctlp; + info->board = board; + info->aiop = aiop; + info->chan = chan; + tty_port_init(&info->port); + info->port.ops = &rocket_port_ops; + init_completion(&info->close_wait); + info->flags &= ~ROCKET_MODE_MASK; + switch (pc104[board][line]) { + case 422: + info->flags |= ROCKET_MODE_RS422; + break; + case 485: + info->flags |= ROCKET_MODE_RS485; + break; + case 232: + default: + info->flags |= ROCKET_MODE_RS232; + break; + } + + info->intmask = RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR; + if (sInitChan(ctlp, &info->channel, aiop, chan) == 0) { + printk(KERN_ERR "RocketPort sInitChan(%d, %d, %d) failed!\n", + board, aiop, chan); + kfree(info); + return; + } + + rocketMode = info->flags & ROCKET_MODE_MASK; + + if ((info->flags & ROCKET_RTS_TOGGLE) || (rocketMode == ROCKET_MODE_RS485)) + sEnRTSToggle(&info->channel); + else + sDisRTSToggle(&info->channel); + + if (ctlp->boardType == ROCKET_TYPE_PC104) { + switch (rocketMode) { + case ROCKET_MODE_RS485: + sSetInterfaceMode(&info->channel, InterfaceModeRS485); + break; + case ROCKET_MODE_RS422: + sSetInterfaceMode(&info->channel, InterfaceModeRS422); + break; + case ROCKET_MODE_RS232: + default: + if (info->flags & ROCKET_RTS_TOGGLE) + sSetInterfaceMode(&info->channel, InterfaceModeRS232T); + else + sSetInterfaceMode(&info->channel, InterfaceModeRS232); + break; + } + } + spin_lock_init(&info->slock); + mutex_init(&info->write_mtx); + rp_table[line] = info; + tty_register_device(rocket_driver, line, pci_dev ? &pci_dev->dev : + NULL); +} + +/* + * Configures a rocketport port according to its termio settings. Called from + * user mode into the driver (exception handler). *info CD manipulation is spinlock protected. + */ +static void configure_r_port(struct tty_struct *tty, struct r_port *info, + struct ktermios *old_termios) +{ + unsigned cflag; + unsigned long flags; + unsigned rocketMode; + int bits, baud, divisor; + CHANNEL_t *cp; + struct ktermios *t = tty->termios; + + cp = &info->channel; + cflag = t->c_cflag; + + /* Byte size and parity */ + if ((cflag & CSIZE) == CS8) { + sSetData8(cp); + bits = 10; + } else { + sSetData7(cp); + bits = 9; + } + if (cflag & CSTOPB) { + sSetStop2(cp); + bits++; + } else { + sSetStop1(cp); + } + + if (cflag & PARENB) { + sEnParity(cp); + bits++; + if (cflag & PARODD) { + sSetOddParity(cp); + } else { + sSetEvenParity(cp); + } + } else { + sDisParity(cp); + } + + /* baud rate */ + baud = tty_get_baud_rate(tty); + if (!baud) + baud = 9600; + divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1; + if ((divisor >= 8192 || divisor < 0) && old_termios) { + baud = tty_termios_baud_rate(old_termios); + if (!baud) + baud = 9600; + divisor = (rp_baud_base[info->board] / baud) - 1; + } + if (divisor >= 8192 || divisor < 0) { + baud = 9600; + divisor = (rp_baud_base[info->board] / baud) - 1; + } + info->cps = baud / bits; + sSetBaud(cp, divisor); + + /* FIXME: Should really back compute a baud rate from the divisor */ + tty_encode_baud_rate(tty, baud, baud); + + if (cflag & CRTSCTS) { + info->intmask |= DELTA_CTS; + sEnCTSFlowCtl(cp); + } else { + info->intmask &= ~DELTA_CTS; + sDisCTSFlowCtl(cp); + } + if (cflag & CLOCAL) { + info->intmask &= ~DELTA_CD; + } else { + spin_lock_irqsave(&info->slock, flags); + if (sGetChanStatus(cp) & CD_ACT) + info->cd_status = 1; + else + info->cd_status = 0; + info->intmask |= DELTA_CD; + spin_unlock_irqrestore(&info->slock, flags); + } + + /* + * Handle software flow control in the board + */ +#ifdef ROCKET_SOFT_FLOW + if (I_IXON(tty)) { + sEnTxSoftFlowCtl(cp); + if (I_IXANY(tty)) { + sEnIXANY(cp); + } else { + sDisIXANY(cp); + } + sSetTxXONChar(cp, START_CHAR(tty)); + sSetTxXOFFChar(cp, STOP_CHAR(tty)); + } else { + sDisTxSoftFlowCtl(cp); + sDisIXANY(cp); + sClrTxXOFF(cp); + } +#endif + + /* + * Set up ignore/read mask words + */ + info->read_status_mask = STMRCVROVRH | 0xFF; + if (I_INPCK(tty)) + info->read_status_mask |= STMFRAMEH | STMPARITYH; + if (I_BRKINT(tty) || I_PARMRK(tty)) + info->read_status_mask |= STMBREAKH; + + /* + * Characters to ignore + */ + info->ignore_status_mask = 0; + if (I_IGNPAR(tty)) + info->ignore_status_mask |= STMFRAMEH | STMPARITYH; + if (I_IGNBRK(tty)) { + info->ignore_status_mask |= STMBREAKH; + /* + * If we're ignoring parity and break indicators, + * ignore overruns too. (For real raw support). + */ + if (I_IGNPAR(tty)) + info->ignore_status_mask |= STMRCVROVRH; + } + + rocketMode = info->flags & ROCKET_MODE_MASK; + + if ((info->flags & ROCKET_RTS_TOGGLE) + || (rocketMode == ROCKET_MODE_RS485)) + sEnRTSToggle(cp); + else + sDisRTSToggle(cp); + + sSetRTS(&info->channel); + + if (cp->CtlP->boardType == ROCKET_TYPE_PC104) { + switch (rocketMode) { + case ROCKET_MODE_RS485: + sSetInterfaceMode(cp, InterfaceModeRS485); + break; + case ROCKET_MODE_RS422: + sSetInterfaceMode(cp, InterfaceModeRS422); + break; + case ROCKET_MODE_RS232: + default: + if (info->flags & ROCKET_RTS_TOGGLE) + sSetInterfaceMode(cp, InterfaceModeRS232T); + else + sSetInterfaceMode(cp, InterfaceModeRS232); + break; + } + } +} + +static int carrier_raised(struct tty_port *port) +{ + struct r_port *info = container_of(port, struct r_port, port); + return (sGetChanStatusLo(&info->channel) & CD_ACT) ? 1 : 0; +} + +static void dtr_rts(struct tty_port *port, int on) +{ + struct r_port *info = container_of(port, struct r_port, port); + if (on) { + sSetDTR(&info->channel); + sSetRTS(&info->channel); + } else { + sClrDTR(&info->channel); + sClrRTS(&info->channel); + } +} + +/* + * Exception handler that opens a serial port. Creates xmit_buf storage, fills in + * port's r_port struct. Initializes the port hardware. + */ +static int rp_open(struct tty_struct *tty, struct file *filp) +{ + struct r_port *info; + struct tty_port *port; + int line = 0, retval; + CHANNEL_t *cp; + unsigned long page; + + line = tty->index; + if (line < 0 || line >= MAX_RP_PORTS || ((info = rp_table[line]) == NULL)) + return -ENXIO; + port = &info->port; + + page = __get_free_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + if (port->flags & ASYNC_CLOSING) { + retval = wait_for_completion_interruptible(&info->close_wait); + free_page(page); + if (retval) + return retval; + return ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); + } + + /* + * We must not sleep from here until the port is marked fully in use. + */ + if (info->xmit_buf) + free_page(page); + else + info->xmit_buf = (unsigned char *) page; + + tty->driver_data = info; + tty_port_tty_set(port, tty); + + if (port->count++ == 0) { + atomic_inc(&rp_num_ports_open); + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rocket mod++ = %d...\n", + atomic_read(&rp_num_ports_open)); +#endif + } +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count); +#endif + + /* + * Info->count is now 1; so it's safe to sleep now. + */ + if (!test_bit(ASYNCB_INITIALIZED, &port->flags)) { + cp = &info->channel; + sSetRxTrigger(cp, TRIG_1); + if (sGetChanStatus(cp) & CD_ACT) + info->cd_status = 1; + else + info->cd_status = 0; + sDisRxStatusMode(cp); + sFlushRxFIFO(cp); + sFlushTxFIFO(cp); + + sEnInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); + sSetRxTrigger(cp, TRIG_1); + + sGetChanStatus(cp); + sDisRxStatusMode(cp); + sClrTxXOFF(cp); + + sDisCTSFlowCtl(cp); + sDisTxSoftFlowCtl(cp); + + sEnRxFIFO(cp); + sEnTransmit(cp); + + set_bit(ASYNCB_INITIALIZED, &info->port.flags); + + /* + * Set up the tty->alt_speed kludge + */ + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) + tty->alt_speed = 57600; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) + tty->alt_speed = 115200; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) + tty->alt_speed = 230400; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) + tty->alt_speed = 460800; + + configure_r_port(tty, info, NULL); + if (tty->termios->c_cflag & CBAUD) { + sSetDTR(cp); + sSetRTS(cp); + } + } + /* Starts (or resets) the maint polling loop */ + mod_timer(&rocket_timer, jiffies + POLL_PERIOD); + + retval = tty_port_block_til_ready(port, tty, filp); + if (retval) { +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rp_open returning after block_til_ready with %d\n", retval); +#endif + return retval; + } + return 0; +} + +/* + * Exception handler that closes a serial port. info->port.count is considered critical. + */ +static void rp_close(struct tty_struct *tty, struct file *filp) +{ + struct r_port *info = tty->driver_data; + struct tty_port *port = &info->port; + int timeout; + CHANNEL_t *cp; + + if (rocket_paranoia_check(info, "rp_close")) + return; + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count); +#endif + + if (tty_port_close_start(port, tty, filp) == 0) + return; + + mutex_lock(&port->mutex); + cp = &info->channel; + /* + * Before we drop DTR, make sure the UART transmitter + * has completely drained; this is especially + * important if there is a transmit FIFO! + */ + timeout = (sGetTxCnt(cp) + 1) * HZ / info->cps; + if (timeout == 0) + timeout = 1; + rp_wait_until_sent(tty, timeout); + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + + sDisTransmit(cp); + sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); + sDisCTSFlowCtl(cp); + sDisTxSoftFlowCtl(cp); + sClrTxXOFF(cp); + sFlushRxFIFO(cp); + sFlushTxFIFO(cp); + sClrRTS(cp); + if (C_HUPCL(tty)) + sClrDTR(cp); + + rp_flush_buffer(tty); + + tty_ldisc_flush(tty); + + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + + /* We can't yet use tty_port_close_end as the buffer handling in this + driver is a bit different to the usual */ + + if (port->blocked_open) { + if (port->close_delay) { + msleep_interruptible(jiffies_to_msecs(port->close_delay)); + } + wake_up_interruptible(&port->open_wait); + } else { + if (info->xmit_buf) { + free_page((unsigned long) info->xmit_buf); + info->xmit_buf = NULL; + } + } + spin_lock_irq(&port->lock); + info->port.flags &= ~(ASYNC_INITIALIZED | ASYNC_CLOSING | ASYNC_NORMAL_ACTIVE); + tty->closing = 0; + spin_unlock_irq(&port->lock); + mutex_unlock(&port->mutex); + tty_port_tty_set(port, NULL); + + wake_up_interruptible(&port->close_wait); + complete_all(&info->close_wait); + atomic_dec(&rp_num_ports_open); + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "rocket mod-- = %d...\n", + atomic_read(&rp_num_ports_open)); + printk(KERN_INFO "rp_close ttyR%d complete shutdown\n", info->line); +#endif + +} + +static void rp_set_termios(struct tty_struct *tty, + struct ktermios *old_termios) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + unsigned cflag; + + if (rocket_paranoia_check(info, "rp_set_termios")) + return; + + cflag = tty->termios->c_cflag; + + /* + * This driver doesn't support CS5 or CS6 + */ + if (((cflag & CSIZE) == CS5) || ((cflag & CSIZE) == CS6)) + tty->termios->c_cflag = + ((cflag & ~CSIZE) | (old_termios->c_cflag & CSIZE)); + /* Or CMSPAR */ + tty->termios->c_cflag &= ~CMSPAR; + + configure_r_port(tty, info, old_termios); + + cp = &info->channel; + + /* Handle transition to B0 status */ + if ((old_termios->c_cflag & CBAUD) && !(tty->termios->c_cflag & CBAUD)) { + sClrDTR(cp); + sClrRTS(cp); + } + + /* Handle transition away from B0 status */ + if (!(old_termios->c_cflag & CBAUD) && (tty->termios->c_cflag & CBAUD)) { + if (!tty->hw_stopped || !(tty->termios->c_cflag & CRTSCTS)) + sSetRTS(cp); + sSetDTR(cp); + } + + if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + rp_start(tty); + } +} + +static int rp_break(struct tty_struct *tty, int break_state) +{ + struct r_port *info = tty->driver_data; + unsigned long flags; + + if (rocket_paranoia_check(info, "rp_break")) + return -EINVAL; + + spin_lock_irqsave(&info->slock, flags); + if (break_state == -1) + sSendBreak(&info->channel); + else + sClrBreak(&info->channel); + spin_unlock_irqrestore(&info->slock, flags); + return 0; +} + +/* + * sGetChanRI used to be a macro in rocket_int.h. When the functionality for + * the UPCI boards was added, it was decided to make this a function because + * the macro was getting too complicated. All cases except the first one + * (UPCIRingInd) are taken directly from the original macro. + */ +static int sGetChanRI(CHANNEL_T * ChP) +{ + CONTROLLER_t *CtlP = ChP->CtlP; + int ChanNum = ChP->ChanNum; + int RingInd = 0; + + if (CtlP->UPCIRingInd) + RingInd = !(sInB(CtlP->UPCIRingInd) & sBitMapSetTbl[ChanNum]); + else if (CtlP->AltChanRingIndicator) + RingInd = sInB((ByteIO_t) (ChP->ChanStat + 8)) & DSR_ACT; + else if (CtlP->boardType == ROCKET_TYPE_PC104) + RingInd = !(sInB(CtlP->AiopIO[3]) & sBitMapSetTbl[ChanNum]); + + return RingInd; +} + +/********************************************************************************************/ +/* Here are the routines used by rp_ioctl. These are all called from exception handlers. */ + +/* + * Returns the state of the serial modem control lines. These next 2 functions + * are the way kernel versions > 2.5 handle modem control lines rather than IOCTLs. + */ +static int rp_tiocmget(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + unsigned int control, result, ChanStatus; + + ChanStatus = sGetChanStatusLo(&info->channel); + control = info->channel.TxControl[3]; + result = ((control & SET_RTS) ? TIOCM_RTS : 0) | + ((control & SET_DTR) ? TIOCM_DTR : 0) | + ((ChanStatus & CD_ACT) ? TIOCM_CAR : 0) | + (sGetChanRI(&info->channel) ? TIOCM_RNG : 0) | + ((ChanStatus & DSR_ACT) ? TIOCM_DSR : 0) | + ((ChanStatus & CTS_ACT) ? TIOCM_CTS : 0); + + return result; +} + +/* + * Sets the modem control lines + */ +static int rp_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct r_port *info = tty->driver_data; + + if (set & TIOCM_RTS) + info->channel.TxControl[3] |= SET_RTS; + if (set & TIOCM_DTR) + info->channel.TxControl[3] |= SET_DTR; + if (clear & TIOCM_RTS) + info->channel.TxControl[3] &= ~SET_RTS; + if (clear & TIOCM_DTR) + info->channel.TxControl[3] &= ~SET_DTR; + + out32(info->channel.IndexAddr, info->channel.TxControl); + return 0; +} + +static int get_config(struct r_port *info, struct rocket_config __user *retinfo) +{ + struct rocket_config tmp; + + if (!retinfo) + return -EFAULT; + memset(&tmp, 0, sizeof (tmp)); + mutex_lock(&info->port.mutex); + tmp.line = info->line; + tmp.flags = info->flags; + tmp.close_delay = info->port.close_delay; + tmp.closing_wait = info->port.closing_wait; + tmp.port = rcktpt_io_addr[(info->line >> 5) & 3]; + mutex_unlock(&info->port.mutex); + + if (copy_to_user(retinfo, &tmp, sizeof (*retinfo))) + return -EFAULT; + return 0; +} + +static int set_config(struct tty_struct *tty, struct r_port *info, + struct rocket_config __user *new_info) +{ + struct rocket_config new_serial; + + if (copy_from_user(&new_serial, new_info, sizeof (new_serial))) + return -EFAULT; + + mutex_lock(&info->port.mutex); + if (!capable(CAP_SYS_ADMIN)) + { + if ((new_serial.flags & ~ROCKET_USR_MASK) != (info->flags & ~ROCKET_USR_MASK)) { + mutex_unlock(&info->port.mutex); + return -EPERM; + } + info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK)); + configure_r_port(tty, info, NULL); + mutex_unlock(&info->port.mutex); + return 0; + } + + info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS)); + info->port.close_delay = new_serial.close_delay; + info->port.closing_wait = new_serial.closing_wait; + + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI) + tty->alt_speed = 57600; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI) + tty->alt_speed = 115200; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI) + tty->alt_speed = 230400; + if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP) + tty->alt_speed = 460800; + mutex_unlock(&info->port.mutex); + + configure_r_port(tty, info, NULL); + return 0; +} + +/* + * This function fills in a rocket_ports struct with information + * about what boards/ports are in the system. This info is passed + * to user space. See setrocket.c where the info is used to create + * the /dev/ttyRx ports. + */ +static int get_ports(struct r_port *info, struct rocket_ports __user *retports) +{ + struct rocket_ports tmp; + int board; + + if (!retports) + return -EFAULT; + memset(&tmp, 0, sizeof (tmp)); + tmp.tty_major = rocket_driver->major; + + for (board = 0; board < 4; board++) { + tmp.rocketModel[board].model = rocketModel[board].model; + strcpy(tmp.rocketModel[board].modelString, rocketModel[board].modelString); + tmp.rocketModel[board].numPorts = rocketModel[board].numPorts; + tmp.rocketModel[board].loadrm2 = rocketModel[board].loadrm2; + tmp.rocketModel[board].startingPortNumber = rocketModel[board].startingPortNumber; + } + if (copy_to_user(retports, &tmp, sizeof (*retports))) + return -EFAULT; + return 0; +} + +static int reset_rm2(struct r_port *info, void __user *arg) +{ + int reset; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (copy_from_user(&reset, arg, sizeof (int))) + return -EFAULT; + if (reset) + reset = 1; + + if (rcktpt_type[info->board] != ROCKET_TYPE_MODEMII && + rcktpt_type[info->board] != ROCKET_TYPE_MODEMIII) + return -EINVAL; + + if (info->ctlp->BusType == isISA) + sModemReset(info->ctlp, info->chan, reset); + else + sPCIModemReset(info->ctlp, info->chan, reset); + + return 0; +} + +static int get_version(struct r_port *info, struct rocket_version __user *retvers) +{ + if (copy_to_user(retvers, &driver_version, sizeof (*retvers))) + return -EFAULT; + return 0; +} + +/* IOCTL call handler into the driver */ +static int rp_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct r_port *info = tty->driver_data; + void __user *argp = (void __user *)arg; + int ret = 0; + + if (cmd != RCKP_GET_PORTS && rocket_paranoia_check(info, "rp_ioctl")) + return -ENXIO; + + switch (cmd) { + case RCKP_GET_STRUCT: + if (copy_to_user(argp, info, sizeof (struct r_port))) + ret = -EFAULT; + break; + case RCKP_GET_CONFIG: + ret = get_config(info, argp); + break; + case RCKP_SET_CONFIG: + ret = set_config(tty, info, argp); + break; + case RCKP_GET_PORTS: + ret = get_ports(info, argp); + break; + case RCKP_RESET_RM2: + ret = reset_rm2(info, argp); + break; + case RCKP_GET_VERSION: + ret = get_version(info, argp); + break; + default: + ret = -ENOIOCTLCMD; + } + return ret; +} + +static void rp_send_xchar(struct tty_struct *tty, char ch) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + + if (rocket_paranoia_check(info, "rp_send_xchar")) + return; + + cp = &info->channel; + if (sGetTxCnt(cp)) + sWriteTxPrioByte(cp, ch); + else + sWriteTxByte(sGetTxRxDataIO(cp), ch); +} + +static void rp_throttle(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + +#ifdef ROCKET_DEBUG_THROTTLE + printk(KERN_INFO "throttle %s: %d....\n", tty->name, + tty->ldisc.chars_in_buffer(tty)); +#endif + + if (rocket_paranoia_check(info, "rp_throttle")) + return; + + cp = &info->channel; + if (I_IXOFF(tty)) + rp_send_xchar(tty, STOP_CHAR(tty)); + + sClrRTS(&info->channel); +} + +static void rp_unthrottle(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; +#ifdef ROCKET_DEBUG_THROTTLE + printk(KERN_INFO "unthrottle %s: %d....\n", tty->name, + tty->ldisc.chars_in_buffer(tty)); +#endif + + if (rocket_paranoia_check(info, "rp_throttle")) + return; + + cp = &info->channel; + if (I_IXOFF(tty)) + rp_send_xchar(tty, START_CHAR(tty)); + + sSetRTS(&info->channel); +} + +/* + * ------------------------------------------------------------ + * rp_stop() and rp_start() + * + * This routines are called before setting or resetting tty->stopped. + * They enable or disable transmitter interrupts, as necessary. + * ------------------------------------------------------------ + */ +static void rp_stop(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + +#ifdef ROCKET_DEBUG_FLOW + printk(KERN_INFO "stop %s: %d %d....\n", tty->name, + info->xmit_cnt, info->xmit_fifo_room); +#endif + + if (rocket_paranoia_check(info, "rp_stop")) + return; + + if (sGetTxCnt(&info->channel)) + sDisTransmit(&info->channel); +} + +static void rp_start(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + +#ifdef ROCKET_DEBUG_FLOW + printk(KERN_INFO "start %s: %d %d....\n", tty->name, + info->xmit_cnt, info->xmit_fifo_room); +#endif + + if (rocket_paranoia_check(info, "rp_stop")) + return; + + sEnTransmit(&info->channel); + set_bit((info->aiop * 8) + info->chan, + (void *) &xmit_flags[info->board]); +} + +/* + * rp_wait_until_sent() --- wait until the transmitter is empty + */ +static void rp_wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + unsigned long orig_jiffies; + int check_time, exit_time; + int txcnt; + + if (rocket_paranoia_check(info, "rp_wait_until_sent")) + return; + + cp = &info->channel; + + orig_jiffies = jiffies; +#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT + printk(KERN_INFO "In RP_wait_until_sent(%d) (jiff=%lu)...\n", timeout, + jiffies); + printk(KERN_INFO "cps=%d...\n", info->cps); +#endif + while (1) { + txcnt = sGetTxCnt(cp); + if (!txcnt) { + if (sGetChanStatusLo(cp) & TXSHRMT) + break; + check_time = (HZ / info->cps) / 5; + } else { + check_time = HZ * txcnt / info->cps; + } + if (timeout) { + exit_time = orig_jiffies + timeout - jiffies; + if (exit_time <= 0) + break; + if (exit_time < check_time) + check_time = exit_time; + } + if (check_time == 0) + check_time = 1; +#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT + printk(KERN_INFO "txcnt = %d (jiff=%lu,check=%d)...\n", txcnt, + jiffies, check_time); +#endif + msleep_interruptible(jiffies_to_msecs(check_time)); + if (signal_pending(current)) + break; + } + __set_current_state(TASK_RUNNING); +#ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT + printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies); +#endif +} + +/* + * rp_hangup() --- called by tty_hangup() when a hangup is signaled. + */ +static void rp_hangup(struct tty_struct *tty) +{ + CHANNEL_t *cp; + struct r_port *info = tty->driver_data; + unsigned long flags; + + if (rocket_paranoia_check(info, "rp_hangup")) + return; + +#if (defined(ROCKET_DEBUG_OPEN) || defined(ROCKET_DEBUG_HANGUP)) + printk(KERN_INFO "rp_hangup of ttyR%d...\n", info->line); +#endif + rp_flush_buffer(tty); + spin_lock_irqsave(&info->port.lock, flags); + if (info->port.flags & ASYNC_CLOSING) { + spin_unlock_irqrestore(&info->port.lock, flags); + return; + } + if (info->port.count) + atomic_dec(&rp_num_ports_open); + clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + spin_unlock_irqrestore(&info->port.lock, flags); + + tty_port_hangup(&info->port); + + cp = &info->channel; + sDisRxFIFO(cp); + sDisTransmit(cp); + sDisInterrupts(cp, (TXINT_EN | MCINT_EN | RXINT_EN | SRCINT_EN | CHANINT_EN)); + sDisCTSFlowCtl(cp); + sDisTxSoftFlowCtl(cp); + sClrTxXOFF(cp); + clear_bit(ASYNCB_INITIALIZED, &info->port.flags); + + wake_up_interruptible(&info->port.open_wait); +} + +/* + * Exception handler - write char routine. The RocketPort driver uses a + * double-buffering strategy, with the twist that if the in-memory CPU + * buffer is empty, and there's space in the transmit FIFO, the + * writing routines will write directly to transmit FIFO. + * Write buffer and counters protected by spinlocks + */ +static int rp_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + unsigned long flags; + + if (rocket_paranoia_check(info, "rp_put_char")) + return 0; + + /* + * Grab the port write mutex, locking out other processes that try to + * write to this port + */ + mutex_lock(&info->write_mtx); + +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_put_char %c...\n", ch); +#endif + + spin_lock_irqsave(&info->slock, flags); + cp = &info->channel; + + if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0) + info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); + + if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) { + info->xmit_buf[info->xmit_head++] = ch; + info->xmit_head &= XMIT_BUF_SIZE - 1; + info->xmit_cnt++; + set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + } else { + sOutB(sGetTxRxDataIO(cp), ch); + info->xmit_fifo_room--; + } + spin_unlock_irqrestore(&info->slock, flags); + mutex_unlock(&info->write_mtx); + return 1; +} + +/* + * Exception handler - write routine, called when user app writes to the device. + * A per port write mutex is used to protect from another process writing to + * this port at the same time. This other process could be running on the other CPU + * or get control of the CPU if the copy_from_user() blocks due to a page fault (swapped out). + * Spinlocks protect the info xmit members. + */ +static int rp_write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + const unsigned char *b; + int c, retval = 0; + unsigned long flags; + + if (count <= 0 || rocket_paranoia_check(info, "rp_write")) + return 0; + + if (mutex_lock_interruptible(&info->write_mtx)) + return -ERESTARTSYS; + +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_write %d chars...\n", count); +#endif + cp = &info->channel; + + if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count) + info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp); + + /* + * If the write queue for the port is empty, and there is FIFO space, stuff bytes + * into FIFO. Use the write queue for temp storage. + */ + if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) { + c = min(count, info->xmit_fifo_room); + b = buf; + + /* Push data into FIFO, 2 bytes at a time */ + sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) b, c / 2); + + /* If there is a byte remaining, write it */ + if (c & 1) + sOutB(sGetTxRxDataIO(cp), b[c - 1]); + + retval += c; + buf += c; + count -= c; + + spin_lock_irqsave(&info->slock, flags); + info->xmit_fifo_room -= c; + spin_unlock_irqrestore(&info->slock, flags); + } + + /* If count is zero, we wrote it all and are done */ + if (!count) + goto end; + + /* Write remaining data into the port's xmit_buf */ + while (1) { + /* Hung up ? */ + if (!test_bit(ASYNCB_NORMAL_ACTIVE, &info->port.flags)) + goto end; + c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1); + c = min(c, XMIT_BUF_SIZE - info->xmit_head); + if (c <= 0) + break; + + b = buf; + memcpy(info->xmit_buf + info->xmit_head, b, c); + + spin_lock_irqsave(&info->slock, flags); + info->xmit_head = + (info->xmit_head + c) & (XMIT_BUF_SIZE - 1); + info->xmit_cnt += c; + spin_unlock_irqrestore(&info->slock, flags); + + buf += c; + count -= c; + retval += c; + } + + if ((retval > 0) && !tty->stopped && !tty->hw_stopped) + set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]); + +end: + if (info->xmit_cnt < WAKEUP_CHARS) { + tty_wakeup(tty); +#ifdef ROCKETPORT_HAVE_POLL_WAIT + wake_up_interruptible(&tty->poll_wait); +#endif + } + mutex_unlock(&info->write_mtx); + return retval; +} + +/* + * Return the number of characters that can be sent. We estimate + * only using the in-memory transmit buffer only, and ignore the + * potential space in the transmit FIFO. + */ +static int rp_write_room(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + int ret; + + if (rocket_paranoia_check(info, "rp_write_room")) + return 0; + + ret = XMIT_BUF_SIZE - info->xmit_cnt - 1; + if (ret < 0) + ret = 0; +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_write_room returns %d...\n", ret); +#endif + return ret; +} + +/* + * Return the number of characters in the buffer. Again, this only + * counts those characters in the in-memory transmit buffer. + */ +static int rp_chars_in_buffer(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + + if (rocket_paranoia_check(info, "rp_chars_in_buffer")) + return 0; + + cp = &info->channel; + +#ifdef ROCKET_DEBUG_WRITE + printk(KERN_INFO "rp_chars_in_buffer returns %d...\n", info->xmit_cnt); +#endif + return info->xmit_cnt; +} + +/* + * Flushes the TX fifo for a port, deletes data in the xmit_buf stored in the + * r_port struct for the port. Note that spinlock are used to protect info members, + * do not call this function if the spinlock is already held. + */ +static void rp_flush_buffer(struct tty_struct *tty) +{ + struct r_port *info = tty->driver_data; + CHANNEL_t *cp; + unsigned long flags; + + if (rocket_paranoia_check(info, "rp_flush_buffer")) + return; + + spin_lock_irqsave(&info->slock, flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + spin_unlock_irqrestore(&info->slock, flags); + +#ifdef ROCKETPORT_HAVE_POLL_WAIT + wake_up_interruptible(&tty->poll_wait); +#endif + tty_wakeup(tty); + + cp = &info->channel; + sFlushTxFIFO(cp); +} + +#ifdef CONFIG_PCI + +static struct pci_device_id __devinitdata __used rocket_pci_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_RP, PCI_ANY_ID) }, + { } +}; +MODULE_DEVICE_TABLE(pci, rocket_pci_ids); + +/* + * Called when a PCI card is found. Retrieves and stores model information, + * init's aiopic and serial port hardware. + * Inputs: i is the board number (0-n) + */ +static __init int register_PCI(int i, struct pci_dev *dev) +{ + int num_aiops, aiop, max_num_aiops, num_chan, chan; + unsigned int aiopio[MAX_AIOPS_PER_BOARD]; + char *str, *board_type; + CONTROLLER_t *ctlp; + + int fast_clock = 0; + int altChanRingIndicator = 0; + int ports_per_aiop = 8; + WordIO_t ConfigIO = 0; + ByteIO_t UPCIRingInd = 0; + + if (!dev || pci_enable_device(dev)) + return 0; + + rcktpt_io_addr[i] = pci_resource_start(dev, 0); + + rcktpt_type[i] = ROCKET_TYPE_NORMAL; + rocketModel[i].loadrm2 = 0; + rocketModel[i].startingPortNumber = nextLineNumber; + + /* Depending on the model, set up some config variables */ + switch (dev->device) { + case PCI_DEVICE_ID_RP4QUAD: + str = "Quadcable"; + max_num_aiops = 1; + ports_per_aiop = 4; + rocketModel[i].model = MODEL_RP4QUAD; + strcpy(rocketModel[i].modelString, "RocketPort 4 port w/quad cable"); + rocketModel[i].numPorts = 4; + break; + case PCI_DEVICE_ID_RP8OCTA: + str = "Octacable"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8OCTA; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/octa cable"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_URP8OCTA: + str = "Octacable"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RP8OCTA; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/octa cable"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP8INTF: + str = "8"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8INTF; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/external I/F"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_URP8INTF: + str = "8"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RP8INTF; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 8 port w/external I/F"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP8J: + str = "8J"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8J; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/RJ11 connectors"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP4J: + str = "4J"; + max_num_aiops = 1; + ports_per_aiop = 4; + rocketModel[i].model = MODEL_RP4J; + strcpy(rocketModel[i].modelString, "RocketPort 4 port w/RJ45 connectors"); + rocketModel[i].numPorts = 4; + break; + case PCI_DEVICE_ID_RP8SNI: + str = "8 (DB78 Custom)"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_RP8SNI; + strcpy(rocketModel[i].modelString, "RocketPort 8 port w/ custom DB78"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP16SNI: + str = "16 (DB78 Custom)"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_RP16SNI; + strcpy(rocketModel[i].modelString, "RocketPort 16 port w/ custom DB78"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_RP16INTF: + str = "16"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_RP16INTF; + strcpy(rocketModel[i].modelString, "RocketPort 16 port w/external I/F"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_URP16INTF: + str = "16"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_UPCI_RP16INTF; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 16 port w/external I/F"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_CRP16INTF: + str = "16"; + max_num_aiops = 2; + rocketModel[i].model = MODEL_CPCI_RP16INTF; + strcpy(rocketModel[i].modelString, "RocketPort Compact PCI 16 port w/external I/F"); + rocketModel[i].numPorts = 16; + break; + case PCI_DEVICE_ID_RP32INTF: + str = "32"; + max_num_aiops = 4; + rocketModel[i].model = MODEL_RP32INTF; + strcpy(rocketModel[i].modelString, "RocketPort 32 port w/external I/F"); + rocketModel[i].numPorts = 32; + break; + case PCI_DEVICE_ID_URP32INTF: + str = "32"; + max_num_aiops = 4; + rocketModel[i].model = MODEL_UPCI_RP32INTF; + strcpy(rocketModel[i].modelString, "RocketPort UPCI 32 port w/external I/F"); + rocketModel[i].numPorts = 32; + break; + case PCI_DEVICE_ID_RPP4: + str = "Plus Quadcable"; + max_num_aiops = 1; + ports_per_aiop = 4; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RPP4; + strcpy(rocketModel[i].modelString, "RocketPort Plus 4 port"); + rocketModel[i].numPorts = 4; + break; + case PCI_DEVICE_ID_RPP8: + str = "Plus Octacable"; + max_num_aiops = 2; + ports_per_aiop = 4; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RPP8; + strcpy(rocketModel[i].modelString, "RocketPort Plus 8 port"); + rocketModel[i].numPorts = 8; + break; + case PCI_DEVICE_ID_RP2_232: + str = "Plus 2 (RS-232)"; + max_num_aiops = 1; + ports_per_aiop = 2; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RP2_232; + strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS232"); + rocketModel[i].numPorts = 2; + break; + case PCI_DEVICE_ID_RP2_422: + str = "Plus 2 (RS-422)"; + max_num_aiops = 1; + ports_per_aiop = 2; + altChanRingIndicator++; + fast_clock++; + rocketModel[i].model = MODEL_RP2_422; + strcpy(rocketModel[i].modelString, "RocketPort Plus 2 port RS422"); + rocketModel[i].numPorts = 2; + break; + case PCI_DEVICE_ID_RP6M: + + max_num_aiops = 1; + ports_per_aiop = 6; + str = "6-port"; + + /* If revision is 1, the rocketmodem flash must be loaded. + * If it is 2 it is a "socketed" version. */ + if (dev->revision == 1) { + rcktpt_type[i] = ROCKET_TYPE_MODEMII; + rocketModel[i].loadrm2 = 1; + } else { + rcktpt_type[i] = ROCKET_TYPE_MODEM; + } + + rocketModel[i].model = MODEL_RP6M; + strcpy(rocketModel[i].modelString, "RocketModem 6 port"); + rocketModel[i].numPorts = 6; + break; + case PCI_DEVICE_ID_RP4M: + max_num_aiops = 1; + ports_per_aiop = 4; + str = "4-port"; + if (dev->revision == 1) { + rcktpt_type[i] = ROCKET_TYPE_MODEMII; + rocketModel[i].loadrm2 = 1; + } else { + rcktpt_type[i] = ROCKET_TYPE_MODEM; + } + + rocketModel[i].model = MODEL_RP4M; + strcpy(rocketModel[i].modelString, "RocketModem 4 port"); + rocketModel[i].numPorts = 4; + break; + default: + str = "(unknown/unsupported)"; + max_num_aiops = 0; + break; + } + + /* + * Check for UPCI boards. + */ + + switch (dev->device) { + case PCI_DEVICE_ID_URP32INTF: + case PCI_DEVICE_ID_URP8INTF: + case PCI_DEVICE_ID_URP16INTF: + case PCI_DEVICE_ID_CRP16INTF: + case PCI_DEVICE_ID_URP8OCTA: + rcktpt_io_addr[i] = pci_resource_start(dev, 2); + ConfigIO = pci_resource_start(dev, 1); + if (dev->device == PCI_DEVICE_ID_URP8OCTA) { + UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; + + /* + * Check for octa or quad cable. + */ + if (! + (sInW(ConfigIO + _PCI_9030_GPIO_CTRL) & + PCI_GPIO_CTRL_8PORT)) { + str = "Quadcable"; + ports_per_aiop = 4; + rocketModel[i].numPorts = 4; + } + } + break; + case PCI_DEVICE_ID_UPCI_RM3_8PORT: + str = "8 ports"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RM3_8PORT; + strcpy(rocketModel[i].modelString, "RocketModem III 8 port"); + rocketModel[i].numPorts = 8; + rcktpt_io_addr[i] = pci_resource_start(dev, 2); + UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; + ConfigIO = pci_resource_start(dev, 1); + rcktpt_type[i] = ROCKET_TYPE_MODEMIII; + break; + case PCI_DEVICE_ID_UPCI_RM3_4PORT: + str = "4 ports"; + max_num_aiops = 1; + rocketModel[i].model = MODEL_UPCI_RM3_4PORT; + strcpy(rocketModel[i].modelString, "RocketModem III 4 port"); + rocketModel[i].numPorts = 4; + rcktpt_io_addr[i] = pci_resource_start(dev, 2); + UPCIRingInd = rcktpt_io_addr[i] + _PCI_9030_RING_IND; + ConfigIO = pci_resource_start(dev, 1); + rcktpt_type[i] = ROCKET_TYPE_MODEMIII; + break; + default: + break; + } + + switch (rcktpt_type[i]) { + case ROCKET_TYPE_MODEM: + board_type = "RocketModem"; + break; + case ROCKET_TYPE_MODEMII: + board_type = "RocketModem II"; + break; + case ROCKET_TYPE_MODEMIII: + board_type = "RocketModem III"; + break; + default: + board_type = "RocketPort"; + break; + } + + if (fast_clock) { + sClockPrescale = 0x12; /* mod 2 (divide by 3) */ + rp_baud_base[i] = 921600; + } else { + /* + * If support_low_speed is set, use the slow clock + * prescale, which supports 50 bps + */ + if (support_low_speed) { + /* mod 9 (divide by 10) prescale */ + sClockPrescale = 0x19; + rp_baud_base[i] = 230400; + } else { + /* mod 4 (devide by 5) prescale */ + sClockPrescale = 0x14; + rp_baud_base[i] = 460800; + } + } + + for (aiop = 0; aiop < max_num_aiops; aiop++) + aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x40); + ctlp = sCtlNumToCtlPtr(i); + num_aiops = sPCIInitController(ctlp, i, aiopio, max_num_aiops, ConfigIO, 0, FREQ_DIS, 0, altChanRingIndicator, UPCIRingInd); + for (aiop = 0; aiop < max_num_aiops; aiop++) + ctlp->AiopNumChan[aiop] = ports_per_aiop; + + dev_info(&dev->dev, "comtrol PCI controller #%d found at " + "address %04lx, %d AIOP(s) (%s), creating ttyR%d - %ld\n", + i, rcktpt_io_addr[i], num_aiops, rocketModel[i].modelString, + rocketModel[i].startingPortNumber, + rocketModel[i].startingPortNumber + rocketModel[i].numPorts-1); + + if (num_aiops <= 0) { + rcktpt_io_addr[i] = 0; + return (0); + } + is_PCI[i] = 1; + + /* Reset the AIOPIC, init the serial ports */ + for (aiop = 0; aiop < num_aiops; aiop++) { + sResetAiopByNum(ctlp, aiop); + num_chan = ports_per_aiop; + for (chan = 0; chan < num_chan; chan++) + init_r_port(i, aiop, chan, dev); + } + + /* Rocket modems must be reset */ + if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || + (rcktpt_type[i] == ROCKET_TYPE_MODEMII) || + (rcktpt_type[i] == ROCKET_TYPE_MODEMIII)) { + num_chan = ports_per_aiop; + for (chan = 0; chan < num_chan; chan++) + sPCIModemReset(ctlp, chan, 1); + msleep(500); + for (chan = 0; chan < num_chan; chan++) + sPCIModemReset(ctlp, chan, 0); + msleep(500); + rmSpeakerReset(ctlp, rocketModel[i].model); + } + return (1); +} + +/* + * Probes for PCI cards, inits them if found + * Input: board_found = number of ISA boards already found, or the + * starting board number + * Returns: Number of PCI boards found + */ +static int __init init_PCI(int boards_found) +{ + struct pci_dev *dev = NULL; + int count = 0; + + /* Work through the PCI device list, pulling out ours */ + while ((dev = pci_get_device(PCI_VENDOR_ID_RP, PCI_ANY_ID, dev))) { + if (register_PCI(count + boards_found, dev)) + count++; + } + return (count); +} + +#endif /* CONFIG_PCI */ + +/* + * Probes for ISA cards + * Input: i = the board number to look for + * Returns: 1 if board found, 0 else + */ +static int __init init_ISA(int i) +{ + int num_aiops, num_chan = 0, total_num_chan = 0; + int aiop, chan; + unsigned int aiopio[MAX_AIOPS_PER_BOARD]; + CONTROLLER_t *ctlp; + char *type_string; + + /* If io_addr is zero, no board configured */ + if (rcktpt_io_addr[i] == 0) + return (0); + + /* Reserve the IO region */ + if (!request_region(rcktpt_io_addr[i], 64, "Comtrol RocketPort")) { + printk(KERN_ERR "Unable to reserve IO region for configured " + "ISA RocketPort at address 0x%lx, board not " + "installed...\n", rcktpt_io_addr[i]); + rcktpt_io_addr[i] = 0; + return (0); + } + + ctlp = sCtlNumToCtlPtr(i); + + ctlp->boardType = rcktpt_type[i]; + + switch (rcktpt_type[i]) { + case ROCKET_TYPE_PC104: + type_string = "(PC104)"; + break; + case ROCKET_TYPE_MODEM: + type_string = "(RocketModem)"; + break; + case ROCKET_TYPE_MODEMII: + type_string = "(RocketModem II)"; + break; + default: + type_string = ""; + break; + } + + /* + * If support_low_speed is set, use the slow clock prescale, + * which supports 50 bps + */ + if (support_low_speed) { + sClockPrescale = 0x19; /* mod 9 (divide by 10) prescale */ + rp_baud_base[i] = 230400; + } else { + sClockPrescale = 0x14; /* mod 4 (devide by 5) prescale */ + rp_baud_base[i] = 460800; + } + + for (aiop = 0; aiop < MAX_AIOPS_PER_BOARD; aiop++) + aiopio[aiop] = rcktpt_io_addr[i] + (aiop * 0x400); + + num_aiops = sInitController(ctlp, i, controller + (i * 0x400), aiopio, MAX_AIOPS_PER_BOARD, 0, FREQ_DIS, 0); + + if (ctlp->boardType == ROCKET_TYPE_PC104) { + sEnAiop(ctlp, 2); /* only one AIOPIC, but these */ + sEnAiop(ctlp, 3); /* CSels used for other stuff */ + } + + /* If something went wrong initing the AIOP's release the ISA IO memory */ + if (num_aiops <= 0) { + release_region(rcktpt_io_addr[i], 64); + rcktpt_io_addr[i] = 0; + return (0); + } + + rocketModel[i].startingPortNumber = nextLineNumber; + + for (aiop = 0; aiop < num_aiops; aiop++) { + sResetAiopByNum(ctlp, aiop); + sEnAiop(ctlp, aiop); + num_chan = sGetAiopNumChan(ctlp, aiop); + total_num_chan += num_chan; + for (chan = 0; chan < num_chan; chan++) + init_r_port(i, aiop, chan, NULL); + } + is_PCI[i] = 0; + if ((rcktpt_type[i] == ROCKET_TYPE_MODEM) || (rcktpt_type[i] == ROCKET_TYPE_MODEMII)) { + num_chan = sGetAiopNumChan(ctlp, 0); + total_num_chan = num_chan; + for (chan = 0; chan < num_chan; chan++) + sModemReset(ctlp, chan, 1); + msleep(500); + for (chan = 0; chan < num_chan; chan++) + sModemReset(ctlp, chan, 0); + msleep(500); + strcpy(rocketModel[i].modelString, "RocketModem ISA"); + } else { + strcpy(rocketModel[i].modelString, "RocketPort ISA"); + } + rocketModel[i].numPorts = total_num_chan; + rocketModel[i].model = MODEL_ISA; + + printk(KERN_INFO "RocketPort ISA card #%d found at 0x%lx - %d AIOPs %s\n", + i, rcktpt_io_addr[i], num_aiops, type_string); + + printk(KERN_INFO "Installing %s, creating /dev/ttyR%d - %ld\n", + rocketModel[i].modelString, + rocketModel[i].startingPortNumber, + rocketModel[i].startingPortNumber + + rocketModel[i].numPorts - 1); + + return (1); +} + +static const struct tty_operations rocket_ops = { + .open = rp_open, + .close = rp_close, + .write = rp_write, + .put_char = rp_put_char, + .write_room = rp_write_room, + .chars_in_buffer = rp_chars_in_buffer, + .flush_buffer = rp_flush_buffer, + .ioctl = rp_ioctl, + .throttle = rp_throttle, + .unthrottle = rp_unthrottle, + .set_termios = rp_set_termios, + .stop = rp_stop, + .start = rp_start, + .hangup = rp_hangup, + .break_ctl = rp_break, + .send_xchar = rp_send_xchar, + .wait_until_sent = rp_wait_until_sent, + .tiocmget = rp_tiocmget, + .tiocmset = rp_tiocmset, +}; + +static const struct tty_port_operations rocket_port_ops = { + .carrier_raised = carrier_raised, + .dtr_rts = dtr_rts, +}; + +/* + * The module "startup" routine; it's run when the module is loaded. + */ +static int __init rp_init(void) +{ + int ret = -ENOMEM, pci_boards_found, isa_boards_found, i; + + printk(KERN_INFO "RocketPort device driver module, version %s, %s\n", + ROCKET_VERSION, ROCKET_DATE); + + rocket_driver = alloc_tty_driver(MAX_RP_PORTS); + if (!rocket_driver) + goto err; + + /* + * If board 1 is non-zero, there is at least one ISA configured. If controller is + * zero, use the default controller IO address of board1 + 0x40. + */ + if (board1) { + if (controller == 0) + controller = board1 + 0x40; + } else { + controller = 0; /* Used as a flag, meaning no ISA boards */ + } + + /* If an ISA card is configured, reserve the 4 byte IO space for the Mudbac controller */ + if (controller && (!request_region(controller, 4, "Comtrol RocketPort"))) { + printk(KERN_ERR "Unable to reserve IO region for first " + "configured ISA RocketPort controller 0x%lx. " + "Driver exiting\n", controller); + ret = -EBUSY; + goto err_tty; + } + + /* Store ISA variable retrieved from command line or .conf file. */ + rcktpt_io_addr[0] = board1; + rcktpt_io_addr[1] = board2; + rcktpt_io_addr[2] = board3; + rcktpt_io_addr[3] = board4; + + rcktpt_type[0] = modem1 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; + rcktpt_type[0] = pc104_1[0] ? ROCKET_TYPE_PC104 : rcktpt_type[0]; + rcktpt_type[1] = modem2 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; + rcktpt_type[1] = pc104_2[0] ? ROCKET_TYPE_PC104 : rcktpt_type[1]; + rcktpt_type[2] = modem3 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; + rcktpt_type[2] = pc104_3[0] ? ROCKET_TYPE_PC104 : rcktpt_type[2]; + rcktpt_type[3] = modem4 ? ROCKET_TYPE_MODEM : ROCKET_TYPE_NORMAL; + rcktpt_type[3] = pc104_4[0] ? ROCKET_TYPE_PC104 : rcktpt_type[3]; + + /* + * Set up the tty driver structure and then register this + * driver with the tty layer. + */ + + rocket_driver->owner = THIS_MODULE; + rocket_driver->flags = TTY_DRIVER_DYNAMIC_DEV; + rocket_driver->name = "ttyR"; + rocket_driver->driver_name = "Comtrol RocketPort"; + rocket_driver->major = TTY_ROCKET_MAJOR; + rocket_driver->minor_start = 0; + rocket_driver->type = TTY_DRIVER_TYPE_SERIAL; + rocket_driver->subtype = SERIAL_TYPE_NORMAL; + rocket_driver->init_termios = tty_std_termios; + rocket_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + rocket_driver->init_termios.c_ispeed = 9600; + rocket_driver->init_termios.c_ospeed = 9600; +#ifdef ROCKET_SOFT_FLOW + rocket_driver->flags |= TTY_DRIVER_REAL_RAW; +#endif + tty_set_operations(rocket_driver, &rocket_ops); + + ret = tty_register_driver(rocket_driver); + if (ret < 0) { + printk(KERN_ERR "Couldn't install tty RocketPort driver\n"); + goto err_controller; + } + +#ifdef ROCKET_DEBUG_OPEN + printk(KERN_INFO "RocketPort driver is major %d\n", rocket_driver.major); +#endif + + /* + * OK, let's probe each of the controllers looking for boards. Any boards found + * will be initialized here. + */ + isa_boards_found = 0; + pci_boards_found = 0; + + for (i = 0; i < NUM_BOARDS; i++) { + if (init_ISA(i)) + isa_boards_found++; + } + +#ifdef CONFIG_PCI + if (isa_boards_found < NUM_BOARDS) + pci_boards_found = init_PCI(isa_boards_found); +#endif + + max_board = pci_boards_found + isa_boards_found; + + if (max_board == 0) { + printk(KERN_ERR "No rocketport ports found; unloading driver\n"); + ret = -ENXIO; + goto err_ttyu; + } + + return 0; +err_ttyu: + tty_unregister_driver(rocket_driver); +err_controller: + if (controller) + release_region(controller, 4); +err_tty: + put_tty_driver(rocket_driver); +err: + return ret; +} + + +static void rp_cleanup_module(void) +{ + int retval; + int i; + + del_timer_sync(&rocket_timer); + + retval = tty_unregister_driver(rocket_driver); + if (retval) + printk(KERN_ERR "Error %d while trying to unregister " + "rocketport driver\n", -retval); + + for (i = 0; i < MAX_RP_PORTS; i++) + if (rp_table[i]) { + tty_unregister_device(rocket_driver, i); + kfree(rp_table[i]); + } + + put_tty_driver(rocket_driver); + + for (i = 0; i < NUM_BOARDS; i++) { + if (rcktpt_io_addr[i] <= 0 || is_PCI[i]) + continue; + release_region(rcktpt_io_addr[i], 64); + } + if (controller) + release_region(controller, 4); +} + +/*************************************************************************** +Function: sInitController +Purpose: Initialization of controller global registers and controller + structure. +Call: sInitController(CtlP,CtlNum,MudbacIO,AiopIOList,AiopIOListSize, + IRQNum,Frequency,PeriodicOnly) + CONTROLLER_T *CtlP; Ptr to controller structure + int CtlNum; Controller number + ByteIO_t MudbacIO; Mudbac base I/O address. + ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. + This list must be in the order the AIOPs will be found on the + controller. Once an AIOP in the list is not found, it is + assumed that there are no more AIOPs on the controller. + int AiopIOListSize; Number of addresses in AiopIOList + int IRQNum; Interrupt Request number. Can be any of the following: + 0: Disable global interrupts + 3: IRQ 3 + 4: IRQ 4 + 5: IRQ 5 + 9: IRQ 9 + 10: IRQ 10 + 11: IRQ 11 + 12: IRQ 12 + 15: IRQ 15 + Byte_t Frequency: A flag identifying the frequency + of the periodic interrupt, can be any one of the following: + FREQ_DIS - periodic interrupt disabled + FREQ_137HZ - 137 Hertz + FREQ_69HZ - 69 Hertz + FREQ_34HZ - 34 Hertz + FREQ_17HZ - 17 Hertz + FREQ_9HZ - 9 Hertz + FREQ_4HZ - 4 Hertz + If IRQNum is set to 0 the Frequency parameter is + overidden, it is forced to a value of FREQ_DIS. + int PeriodicOnly: 1 if all interrupts except the periodic + interrupt are to be blocked. + 0 is both the periodic interrupt and + other channel interrupts are allowed. + If IRQNum is set to 0 the PeriodicOnly parameter is + overidden, it is forced to a value of 0. +Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller + initialization failed. + +Comments: + If periodic interrupts are to be disabled but AIOP interrupts + are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. + + If interrupts are to be completely disabled set IRQNum to 0. + + Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an + invalid combination. + + This function performs initialization of global interrupt modes, + but it does not actually enable global interrupts. To enable + and disable global interrupts use functions sEnGlobalInt() and + sDisGlobalInt(). Enabling of global interrupts is normally not + done until all other initializations are complete. + + Even if interrupts are globally enabled, they must also be + individually enabled for each channel that is to generate + interrupts. + +Warnings: No range checking on any of the parameters is done. + + No context switches are allowed while executing this function. + + After this function all AIOPs on the controller are disabled, + they can be enabled with sEnAiop(). +*/ +static int sInitController(CONTROLLER_T * CtlP, int CtlNum, ByteIO_t MudbacIO, + ByteIO_t * AiopIOList, int AiopIOListSize, + int IRQNum, Byte_t Frequency, int PeriodicOnly) +{ + int i; + ByteIO_t io; + int done; + + CtlP->AiopIntrBits = aiop_intr_bits; + CtlP->AltChanRingIndicator = 0; + CtlP->CtlNum = CtlNum; + CtlP->CtlID = CTLID_0001; /* controller release 1 */ + CtlP->BusType = isISA; + CtlP->MBaseIO = MudbacIO; + CtlP->MReg1IO = MudbacIO + 1; + CtlP->MReg2IO = MudbacIO + 2; + CtlP->MReg3IO = MudbacIO + 3; +#if 1 + CtlP->MReg2 = 0; /* interrupt disable */ + CtlP->MReg3 = 0; /* no periodic interrupts */ +#else + if (sIRQMap[IRQNum] == 0) { /* interrupts globally disabled */ + CtlP->MReg2 = 0; /* interrupt disable */ + CtlP->MReg3 = 0; /* no periodic interrupts */ + } else { + CtlP->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */ + CtlP->MReg3 = Frequency; /* set frequency */ + if (PeriodicOnly) { /* periodic interrupt only */ + CtlP->MReg3 |= PERIODIC_ONLY; + } + } +#endif + sOutB(CtlP->MReg2IO, CtlP->MReg2); + sOutB(CtlP->MReg3IO, CtlP->MReg3); + sControllerEOI(CtlP); /* clear EOI if warm init */ + /* Init AIOPs */ + CtlP->NumAiop = 0; + for (i = done = 0; i < AiopIOListSize; i++) { + io = AiopIOList[i]; + CtlP->AiopIO[i] = (WordIO_t) io; + CtlP->AiopIntChanIO[i] = io + _INT_CHAN; + sOutB(CtlP->MReg2IO, CtlP->MReg2 | (i & 0x03)); /* AIOP index */ + sOutB(MudbacIO, (Byte_t) (io >> 6)); /* set up AIOP I/O in MUDBAC */ + if (done) + continue; + sEnAiop(CtlP, i); /* enable the AIOP */ + CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ + if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ + done = 1; /* done looking for AIOPs */ + else { + CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ + sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ + sOutB(io + _INDX_DATA, sClockPrescale); + CtlP->NumAiop++; /* bump count of AIOPs */ + } + sDisAiop(CtlP, i); /* disable AIOP */ + } + + if (CtlP->NumAiop == 0) + return (-1); + else + return (CtlP->NumAiop); +} + +/*************************************************************************** +Function: sPCIInitController +Purpose: Initialization of controller global registers and controller + structure. +Call: sPCIInitController(CtlP,CtlNum,AiopIOList,AiopIOListSize, + IRQNum,Frequency,PeriodicOnly) + CONTROLLER_T *CtlP; Ptr to controller structure + int CtlNum; Controller number + ByteIO_t *AiopIOList; List of I/O addresses for each AIOP. + This list must be in the order the AIOPs will be found on the + controller. Once an AIOP in the list is not found, it is + assumed that there are no more AIOPs on the controller. + int AiopIOListSize; Number of addresses in AiopIOList + int IRQNum; Interrupt Request number. Can be any of the following: + 0: Disable global interrupts + 3: IRQ 3 + 4: IRQ 4 + 5: IRQ 5 + 9: IRQ 9 + 10: IRQ 10 + 11: IRQ 11 + 12: IRQ 12 + 15: IRQ 15 + Byte_t Frequency: A flag identifying the frequency + of the periodic interrupt, can be any one of the following: + FREQ_DIS - periodic interrupt disabled + FREQ_137HZ - 137 Hertz + FREQ_69HZ - 69 Hertz + FREQ_34HZ - 34 Hertz + FREQ_17HZ - 17 Hertz + FREQ_9HZ - 9 Hertz + FREQ_4HZ - 4 Hertz + If IRQNum is set to 0 the Frequency parameter is + overidden, it is forced to a value of FREQ_DIS. + int PeriodicOnly: 1 if all interrupts except the periodic + interrupt are to be blocked. + 0 is both the periodic interrupt and + other channel interrupts are allowed. + If IRQNum is set to 0 the PeriodicOnly parameter is + overidden, it is forced to a value of 0. +Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller + initialization failed. + +Comments: + If periodic interrupts are to be disabled but AIOP interrupts + are allowed, set Frequency to FREQ_DIS and PeriodicOnly to 0. + + If interrupts are to be completely disabled set IRQNum to 0. + + Setting Frequency to FREQ_DIS and PeriodicOnly to 1 is an + invalid combination. + + This function performs initialization of global interrupt modes, + but it does not actually enable global interrupts. To enable + and disable global interrupts use functions sEnGlobalInt() and + sDisGlobalInt(). Enabling of global interrupts is normally not + done until all other initializations are complete. + + Even if interrupts are globally enabled, they must also be + individually enabled for each channel that is to generate + interrupts. + +Warnings: No range checking on any of the parameters is done. + + No context switches are allowed while executing this function. + + After this function all AIOPs on the controller are disabled, + they can be enabled with sEnAiop(). +*/ +static int sPCIInitController(CONTROLLER_T * CtlP, int CtlNum, + ByteIO_t * AiopIOList, int AiopIOListSize, + WordIO_t ConfigIO, int IRQNum, Byte_t Frequency, + int PeriodicOnly, int altChanRingIndicator, + int UPCIRingInd) +{ + int i; + ByteIO_t io; + + CtlP->AltChanRingIndicator = altChanRingIndicator; + CtlP->UPCIRingInd = UPCIRingInd; + CtlP->CtlNum = CtlNum; + CtlP->CtlID = CTLID_0001; /* controller release 1 */ + CtlP->BusType = isPCI; /* controller release 1 */ + + if (ConfigIO) { + CtlP->isUPCI = 1; + CtlP->PCIIO = ConfigIO + _PCI_9030_INT_CTRL; + CtlP->PCIIO2 = ConfigIO + _PCI_9030_GPIO_CTRL; + CtlP->AiopIntrBits = upci_aiop_intr_bits; + } else { + CtlP->isUPCI = 0; + CtlP->PCIIO = + (WordIO_t) ((ByteIO_t) AiopIOList[0] + _PCI_INT_FUNC); + CtlP->AiopIntrBits = aiop_intr_bits; + } + + sPCIControllerEOI(CtlP); /* clear EOI if warm init */ + /* Init AIOPs */ + CtlP->NumAiop = 0; + for (i = 0; i < AiopIOListSize; i++) { + io = AiopIOList[i]; + CtlP->AiopIO[i] = (WordIO_t) io; + CtlP->AiopIntChanIO[i] = io + _INT_CHAN; + + CtlP->AiopID[i] = sReadAiopID(io); /* read AIOP ID */ + if (CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ + break; /* done looking for AIOPs */ + + CtlP->AiopNumChan[i] = sReadAiopNumChan((WordIO_t) io); /* num channels in AIOP */ + sOutW((WordIO_t) io + _INDX_ADDR, _CLK_PRE); /* clock prescaler */ + sOutB(io + _INDX_DATA, sClockPrescale); + CtlP->NumAiop++; /* bump count of AIOPs */ + } + + if (CtlP->NumAiop == 0) + return (-1); + else + return (CtlP->NumAiop); +} + +/*************************************************************************** +Function: sReadAiopID +Purpose: Read the AIOP idenfication number directly from an AIOP. +Call: sReadAiopID(io) + ByteIO_t io: AIOP base I/O address +Return: int: Flag AIOPID_XXXX if a valid AIOP is found, where X + is replace by an identifying number. + Flag AIOPID_NULL if no valid AIOP is found +Warnings: No context switches are allowed while executing this function. + +*/ +static int sReadAiopID(ByteIO_t io) +{ + Byte_t AiopID; /* ID byte from AIOP */ + + sOutB(io + _CMD_REG, RESET_ALL); /* reset AIOP */ + sOutB(io + _CMD_REG, 0x0); + AiopID = sInW(io + _CHN_STAT0) & 0x07; + if (AiopID == 0x06) + return (1); + else /* AIOP does not exist */ + return (-1); +} + +/*************************************************************************** +Function: sReadAiopNumChan +Purpose: Read the number of channels available in an AIOP directly from + an AIOP. +Call: sReadAiopNumChan(io) + WordIO_t io: AIOP base I/O address +Return: int: The number of channels available +Comments: The number of channels is determined by write/reads from identical + offsets within the SRAM address spaces for channels 0 and 4. + If the channel 4 space is mirrored to channel 0 it is a 4 channel + AIOP, otherwise it is an 8 channel. +Warnings: No context switches are allowed while executing this function. +*/ +static int sReadAiopNumChan(WordIO_t io) +{ + Word_t x; + static Byte_t R[4] = { 0x00, 0x00, 0x34, 0x12 }; + + /* write to chan 0 SRAM */ + out32((DWordIO_t) io + _INDX_ADDR, R); + sOutW(io + _INDX_ADDR, 0); /* read from SRAM, chan 0 */ + x = sInW(io + _INDX_DATA); + sOutW(io + _INDX_ADDR, 0x4000); /* read from SRAM, chan 4 */ + if (x != sInW(io + _INDX_DATA)) /* if different must be 8 chan */ + return (8); + else + return (4); +} + +/*************************************************************************** +Function: sInitChan +Purpose: Initialization of a channel and channel structure +Call: sInitChan(CtlP,ChP,AiopNum,ChanNum) + CONTROLLER_T *CtlP; Ptr to controller structure + CHANNEL_T *ChP; Ptr to channel structure + int AiopNum; AIOP number within controller + int ChanNum; Channel number within AIOP +Return: int: 1 if initialization succeeded, 0 if it fails because channel + number exceeds number of channels available in AIOP. +Comments: This function must be called before a channel can be used. +Warnings: No range checking on any of the parameters is done. + + No context switches are allowed while executing this function. +*/ +static int sInitChan(CONTROLLER_T * CtlP, CHANNEL_T * ChP, int AiopNum, + int ChanNum) +{ + int i; + WordIO_t AiopIO; + WordIO_t ChIOOff; + Byte_t *ChR; + Word_t ChOff; + static Byte_t R[4]; + int brd9600; + + if (ChanNum >= CtlP->AiopNumChan[AiopNum]) + return 0; /* exceeds num chans in AIOP */ + + /* Channel, AIOP, and controller identifiers */ + ChP->CtlP = CtlP; + ChP->ChanID = CtlP->AiopID[AiopNum]; + ChP->AiopNum = AiopNum; + ChP->ChanNum = ChanNum; + + /* Global direct addresses */ + AiopIO = CtlP->AiopIO[AiopNum]; + ChP->Cmd = (ByteIO_t) AiopIO + _CMD_REG; + ChP->IntChan = (ByteIO_t) AiopIO + _INT_CHAN; + ChP->IntMask = (ByteIO_t) AiopIO + _INT_MASK; + ChP->IndexAddr = (DWordIO_t) AiopIO + _INDX_ADDR; + ChP->IndexData = AiopIO + _INDX_DATA; + + /* Channel direct addresses */ + ChIOOff = AiopIO + ChP->ChanNum * 2; + ChP->TxRxData = ChIOOff + _TD0; + ChP->ChanStat = ChIOOff + _CHN_STAT0; + ChP->TxRxCount = ChIOOff + _FIFO_CNT0; + ChP->IntID = (ByteIO_t) AiopIO + ChP->ChanNum + _INT_ID0; + + /* Initialize the channel from the RData array */ + for (i = 0; i < RDATASIZE; i += 4) { + R[0] = RData[i]; + R[1] = RData[i + 1] + 0x10 * ChanNum; + R[2] = RData[i + 2]; + R[3] = RData[i + 3]; + out32(ChP->IndexAddr, R); + } + + ChR = ChP->R; + for (i = 0; i < RREGDATASIZE; i += 4) { + ChR[i] = RRegData[i]; + ChR[i + 1] = RRegData[i + 1] + 0x10 * ChanNum; + ChR[i + 2] = RRegData[i + 2]; + ChR[i + 3] = RRegData[i + 3]; + } + + /* Indexed registers */ + ChOff = (Word_t) ChanNum *0x1000; + + if (sClockPrescale == 0x14) + brd9600 = 47; + else + brd9600 = 23; + + ChP->BaudDiv[0] = (Byte_t) (ChOff + _BAUD); + ChP->BaudDiv[1] = (Byte_t) ((ChOff + _BAUD) >> 8); + ChP->BaudDiv[2] = (Byte_t) brd9600; + ChP->BaudDiv[3] = (Byte_t) (brd9600 >> 8); + out32(ChP->IndexAddr, ChP->BaudDiv); + + ChP->TxControl[0] = (Byte_t) (ChOff + _TX_CTRL); + ChP->TxControl[1] = (Byte_t) ((ChOff + _TX_CTRL) >> 8); + ChP->TxControl[2] = 0; + ChP->TxControl[3] = 0; + out32(ChP->IndexAddr, ChP->TxControl); + + ChP->RxControl[0] = (Byte_t) (ChOff + _RX_CTRL); + ChP->RxControl[1] = (Byte_t) ((ChOff + _RX_CTRL) >> 8); + ChP->RxControl[2] = 0; + ChP->RxControl[3] = 0; + out32(ChP->IndexAddr, ChP->RxControl); + + ChP->TxEnables[0] = (Byte_t) (ChOff + _TX_ENBLS); + ChP->TxEnables[1] = (Byte_t) ((ChOff + _TX_ENBLS) >> 8); + ChP->TxEnables[2] = 0; + ChP->TxEnables[3] = 0; + out32(ChP->IndexAddr, ChP->TxEnables); + + ChP->TxCompare[0] = (Byte_t) (ChOff + _TXCMP1); + ChP->TxCompare[1] = (Byte_t) ((ChOff + _TXCMP1) >> 8); + ChP->TxCompare[2] = 0; + ChP->TxCompare[3] = 0; + out32(ChP->IndexAddr, ChP->TxCompare); + + ChP->TxReplace1[0] = (Byte_t) (ChOff + _TXREP1B1); + ChP->TxReplace1[1] = (Byte_t) ((ChOff + _TXREP1B1) >> 8); + ChP->TxReplace1[2] = 0; + ChP->TxReplace1[3] = 0; + out32(ChP->IndexAddr, ChP->TxReplace1); + + ChP->TxReplace2[0] = (Byte_t) (ChOff + _TXREP2); + ChP->TxReplace2[1] = (Byte_t) ((ChOff + _TXREP2) >> 8); + ChP->TxReplace2[2] = 0; + ChP->TxReplace2[3] = 0; + out32(ChP->IndexAddr, ChP->TxReplace2); + + ChP->TxFIFOPtrs = ChOff + _TXF_OUTP; + ChP->TxFIFO = ChOff + _TX_FIFO; + + sOutB(ChP->Cmd, (Byte_t) ChanNum | RESTXFCNT); /* apply reset Tx FIFO count */ + sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Tx FIFO count */ + sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ + sOutW(ChP->IndexData, 0); + ChP->RxFIFOPtrs = ChOff + _RXF_OUTP; + ChP->RxFIFO = ChOff + _RX_FIFO; + + sOutB(ChP->Cmd, (Byte_t) ChanNum | RESRXFCNT); /* apply reset Rx FIFO count */ + sOutB(ChP->Cmd, (Byte_t) ChanNum); /* remove reset Rx FIFO count */ + sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ + sOutW(ChP->IndexData, 0); + sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ + sOutW(ChP->IndexData, 0); + ChP->TxPrioCnt = ChOff + _TXP_CNT; + sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioCnt); + sOutB(ChP->IndexData, 0); + ChP->TxPrioPtr = ChOff + _TXP_PNTR; + sOutW((WordIO_t) ChP->IndexAddr, ChP->TxPrioPtr); + sOutB(ChP->IndexData, 0); + ChP->TxPrioBuf = ChOff + _TXP_BUF; + sEnRxProcessor(ChP); /* start the Rx processor */ + + return 1; +} + +/*************************************************************************** +Function: sStopRxProcessor +Purpose: Stop the receive processor from processing a channel. +Call: sStopRxProcessor(ChP) + CHANNEL_T *ChP; Ptr to channel structure + +Comments: The receive processor can be started again with sStartRxProcessor(). + This function causes the receive processor to skip over the + stopped channel. It does not stop it from processing other channels. + +Warnings: No context switches are allowed while executing this function. + + Do not leave the receive processor stopped for more than one + character time. + + After calling this function a delay of 4 uS is required to ensure + that the receive processor is no longer processing this channel. +*/ +static void sStopRxProcessor(CHANNEL_T * ChP) +{ + Byte_t R[4]; + + R[0] = ChP->R[0]; + R[1] = ChP->R[1]; + R[2] = 0x0a; + R[3] = ChP->R[3]; + out32(ChP->IndexAddr, R); +} + +/*************************************************************************** +Function: sFlushRxFIFO +Purpose: Flush the Rx FIFO +Call: sFlushRxFIFO(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: void +Comments: To prevent data from being enqueued or dequeued in the Tx FIFO + while it is being flushed the receive processor is stopped + and the transmitter is disabled. After these operations a + 4 uS delay is done before clearing the pointers to allow + the receive processor to stop. These items are handled inside + this function. +Warnings: No context switches are allowed while executing this function. +*/ +static void sFlushRxFIFO(CHANNEL_T * ChP) +{ + int i; + Byte_t Ch; /* channel number within AIOP */ + int RxFIFOEnabled; /* 1 if Rx FIFO enabled */ + + if (sGetRxCnt(ChP) == 0) /* Rx FIFO empty */ + return; /* don't need to flush */ + + RxFIFOEnabled = 0; + if (ChP->R[0x32] == 0x08) { /* Rx FIFO is enabled */ + RxFIFOEnabled = 1; + sDisRxFIFO(ChP); /* disable it */ + for (i = 0; i < 2000 / 200; i++) /* delay 2 uS to allow proc to disable FIFO */ + sInB(ChP->IntChan); /* depends on bus i/o timing */ + } + sGetChanStatus(ChP); /* clear any pending Rx errors in chan stat */ + Ch = (Byte_t) sGetChanNum(ChP); + sOutB(ChP->Cmd, Ch | RESRXFCNT); /* apply reset Rx FIFO count */ + sOutB(ChP->Cmd, Ch); /* remove reset Rx FIFO count */ + sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs); /* clear Rx out ptr */ + sOutW(ChP->IndexData, 0); + sOutW((WordIO_t) ChP->IndexAddr, ChP->RxFIFOPtrs + 2); /* clear Rx in ptr */ + sOutW(ChP->IndexData, 0); + if (RxFIFOEnabled) + sEnRxFIFO(ChP); /* enable Rx FIFO */ +} + +/*************************************************************************** +Function: sFlushTxFIFO +Purpose: Flush the Tx FIFO +Call: sFlushTxFIFO(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: void +Comments: To prevent data from being enqueued or dequeued in the Tx FIFO + while it is being flushed the receive processor is stopped + and the transmitter is disabled. After these operations a + 4 uS delay is done before clearing the pointers to allow + the receive processor to stop. These items are handled inside + this function. +Warnings: No context switches are allowed while executing this function. +*/ +static void sFlushTxFIFO(CHANNEL_T * ChP) +{ + int i; + Byte_t Ch; /* channel number within AIOP */ + int TxEnabled; /* 1 if transmitter enabled */ + + if (sGetTxCnt(ChP) == 0) /* Tx FIFO empty */ + return; /* don't need to flush */ + + TxEnabled = 0; + if (ChP->TxControl[3] & TX_ENABLE) { + TxEnabled = 1; + sDisTransmit(ChP); /* disable transmitter */ + } + sStopRxProcessor(ChP); /* stop Rx processor */ + for (i = 0; i < 4000 / 200; i++) /* delay 4 uS to allow proc to stop */ + sInB(ChP->IntChan); /* depends on bus i/o timing */ + Ch = (Byte_t) sGetChanNum(ChP); + sOutB(ChP->Cmd, Ch | RESTXFCNT); /* apply reset Tx FIFO count */ + sOutB(ChP->Cmd, Ch); /* remove reset Tx FIFO count */ + sOutW((WordIO_t) ChP->IndexAddr, ChP->TxFIFOPtrs); /* clear Tx in/out ptrs */ + sOutW(ChP->IndexData, 0); + if (TxEnabled) + sEnTransmit(ChP); /* enable transmitter */ + sStartRxProcessor(ChP); /* restart Rx processor */ +} + +/*************************************************************************** +Function: sWriteTxPrioByte +Purpose: Write a byte of priority transmit data to a channel +Call: sWriteTxPrioByte(ChP,Data) + CHANNEL_T *ChP; Ptr to channel structure + Byte_t Data; The transmit data byte + +Return: int: 1 if the bytes is successfully written, otherwise 0. + +Comments: The priority byte is transmitted before any data in the Tx FIFO. + +Warnings: No context switches are allowed while executing this function. +*/ +static int sWriteTxPrioByte(CHANNEL_T * ChP, Byte_t Data) +{ + Byte_t DWBuf[4]; /* buffer for double word writes */ + Word_t *WordPtr; /* must be far because Win SS != DS */ + register DWordIO_t IndexAddr; + + if (sGetTxCnt(ChP) > 1) { /* write it to Tx priority buffer */ + IndexAddr = ChP->IndexAddr; + sOutW((WordIO_t) IndexAddr, ChP->TxPrioCnt); /* get priority buffer status */ + if (sInB((ByteIO_t) ChP->IndexData) & PRI_PEND) /* priority buffer busy */ + return (0); /* nothing sent */ + + WordPtr = (Word_t *) (&DWBuf[0]); + *WordPtr = ChP->TxPrioBuf; /* data byte address */ + + DWBuf[2] = Data; /* data byte value */ + out32(IndexAddr, DWBuf); /* write it out */ + + *WordPtr = ChP->TxPrioCnt; /* Tx priority count address */ + + DWBuf[2] = PRI_PEND + 1; /* indicate 1 byte pending */ + DWBuf[3] = 0; /* priority buffer pointer */ + out32(IndexAddr, DWBuf); /* write it out */ + } else { /* write it to Tx FIFO */ + + sWriteTxByte(sGetTxRxDataIO(ChP), Data); + } + return (1); /* 1 byte sent */ +} + +/*************************************************************************** +Function: sEnInterrupts +Purpose: Enable one or more interrupts for a channel +Call: sEnInterrupts(ChP,Flags) + CHANNEL_T *ChP; Ptr to channel structure + Word_t Flags: Interrupt enable flags, can be any combination + of the following flags: + TXINT_EN: Interrupt on Tx FIFO empty + RXINT_EN: Interrupt on Rx FIFO at trigger level (see + sSetRxTrigger()) + SRCINT_EN: Interrupt on SRC (Special Rx Condition) + MCINT_EN: Interrupt on modem input change + CHANINT_EN: Allow channel interrupt signal to the AIOP's + Interrupt Channel Register. +Return: void +Comments: If an interrupt enable flag is set in Flags, that interrupt will be + enabled. If an interrupt enable flag is not set in Flags, that + interrupt will not be changed. Interrupts can be disabled with + function sDisInterrupts(). + + This function sets the appropriate bit for the channel in the AIOP's + Interrupt Mask Register if the CHANINT_EN flag is set. This allows + this channel's bit to be set in the AIOP's Interrupt Channel Register. + + Interrupts must also be globally enabled before channel interrupts + will be passed on to the host. This is done with function + sEnGlobalInt(). + + In some cases it may be desirable to disable interrupts globally but + enable channel interrupts. This would allow the global interrupt + status register to be used to determine which AIOPs need service. +*/ +static void sEnInterrupts(CHANNEL_T * ChP, Word_t Flags) +{ + Byte_t Mask; /* Interrupt Mask Register */ + + ChP->RxControl[2] |= + ((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); + + out32(ChP->IndexAddr, ChP->RxControl); + + ChP->TxControl[2] |= ((Byte_t) Flags & TXINT_EN); + + out32(ChP->IndexAddr, ChP->TxControl); + + if (Flags & CHANINT_EN) { + Mask = sInB(ChP->IntMask) | sBitMapSetTbl[ChP->ChanNum]; + sOutB(ChP->IntMask, Mask); + } +} + +/*************************************************************************** +Function: sDisInterrupts +Purpose: Disable one or more interrupts for a channel +Call: sDisInterrupts(ChP,Flags) + CHANNEL_T *ChP; Ptr to channel structure + Word_t Flags: Interrupt flags, can be any combination + of the following flags: + TXINT_EN: Interrupt on Tx FIFO empty + RXINT_EN: Interrupt on Rx FIFO at trigger level (see + sSetRxTrigger()) + SRCINT_EN: Interrupt on SRC (Special Rx Condition) + MCINT_EN: Interrupt on modem input change + CHANINT_EN: Disable channel interrupt signal to the + AIOP's Interrupt Channel Register. +Return: void +Comments: If an interrupt flag is set in Flags, that interrupt will be + disabled. If an interrupt flag is not set in Flags, that + interrupt will not be changed. Interrupts can be enabled with + function sEnInterrupts(). + + This function clears the appropriate bit for the channel in the AIOP's + Interrupt Mask Register if the CHANINT_EN flag is set. This blocks + this channel's bit from being set in the AIOP's Interrupt Channel + Register. +*/ +static void sDisInterrupts(CHANNEL_T * ChP, Word_t Flags) +{ + Byte_t Mask; /* Interrupt Mask Register */ + + ChP->RxControl[2] &= + ~((Byte_t) Flags & (RXINT_EN | SRCINT_EN | MCINT_EN)); + out32(ChP->IndexAddr, ChP->RxControl); + ChP->TxControl[2] &= ~((Byte_t) Flags & TXINT_EN); + out32(ChP->IndexAddr, ChP->TxControl); + + if (Flags & CHANINT_EN) { + Mask = sInB(ChP->IntMask) & sBitMapClrTbl[ChP->ChanNum]; + sOutB(ChP->IntMask, Mask); + } +} + +static void sSetInterfaceMode(CHANNEL_T * ChP, Byte_t mode) +{ + sOutB(ChP->CtlP->AiopIO[2], (mode & 0x18) | ChP->ChanNum); +} + +/* + * Not an official SSCI function, but how to reset RocketModems. + * ISA bus version + */ +static void sModemReset(CONTROLLER_T * CtlP, int chan, int on) +{ + ByteIO_t addr; + Byte_t val; + + addr = CtlP->AiopIO[0] + 0x400; + val = sInB(CtlP->MReg3IO); + /* if AIOP[1] is not enabled, enable it */ + if ((val & 2) == 0) { + val = sInB(CtlP->MReg2IO); + sOutB(CtlP->MReg2IO, (val & 0xfc) | (1 & 0x03)); + sOutB(CtlP->MBaseIO, (unsigned char) (addr >> 6)); + } + + sEnAiop(CtlP, 1); + if (!on) + addr += 8; + sOutB(addr + chan, 0); /* apply or remove reset */ + sDisAiop(CtlP, 1); +} + +/* + * Not an official SSCI function, but how to reset RocketModems. + * PCI bus version + */ +static void sPCIModemReset(CONTROLLER_T * CtlP, int chan, int on) +{ + ByteIO_t addr; + + addr = CtlP->AiopIO[0] + 0x40; /* 2nd AIOP */ + if (!on) + addr += 8; + sOutB(addr + chan, 0); /* apply or remove reset */ +} + +/* Resets the speaker controller on RocketModem II and III devices */ +static void rmSpeakerReset(CONTROLLER_T * CtlP, unsigned long model) +{ + ByteIO_t addr; + + /* RocketModem II speaker control is at the 8th port location of offset 0x40 */ + if ((model == MODEL_RP4M) || (model == MODEL_RP6M)) { + addr = CtlP->AiopIO[0] + 0x4F; + sOutB(addr, 0); + } + + /* RocketModem III speaker control is at the 1st port location of offset 0x80 */ + if ((model == MODEL_UPCI_RM3_8PORT) + || (model == MODEL_UPCI_RM3_4PORT)) { + addr = CtlP->AiopIO[0] + 0x88; + sOutB(addr, 0); + } +} + +/* Returns the line number given the controller (board), aiop and channel number */ +static unsigned char GetLineNumber(int ctrl, int aiop, int ch) +{ + return lineNumbers[(ctrl << 5) | (aiop << 3) | ch]; +} + +/* + * Stores the line number associated with a given controller (board), aiop + * and channel number. + * Returns: The line number assigned + */ +static unsigned char SetLineNumber(int ctrl, int aiop, int ch) +{ + lineNumbers[(ctrl << 5) | (aiop << 3) | ch] = nextLineNumber++; + return (nextLineNumber - 1); +} diff --git a/drivers/tty/rocket.h b/drivers/tty/rocket.h new file mode 100644 index 000000000000..ec863f35f1a9 --- /dev/null +++ b/drivers/tty/rocket.h @@ -0,0 +1,111 @@ +/* + * rocket.h --- the exported interface of the rocket driver to its configuration program. + * + * Written by Theodore Ts'o, Copyright 1997. + * Copyright 1997 Comtrol Corporation. + * + */ + +/* Model Information Struct */ +typedef struct { + unsigned long model; + char modelString[80]; + unsigned long numPorts; + int loadrm2; + int startingPortNumber; +} rocketModel_t; + +struct rocket_config { + int line; + int flags; + int closing_wait; + int close_delay; + int port; + int reserved[32]; +}; + +struct rocket_ports { + int tty_major; + int callout_major; + rocketModel_t rocketModel[8]; +}; + +struct rocket_version { + char rocket_version[32]; + char rocket_date[32]; + char reserved[64]; +}; + +/* + * Rocketport flags + */ +/*#define ROCKET_CALLOUT_NOHUP 0x00000001 */ +#define ROCKET_FORCE_CD 0x00000002 +#define ROCKET_HUP_NOTIFY 0x00000004 +#define ROCKET_SPLIT_TERMIOS 0x00000008 +#define ROCKET_SPD_MASK 0x00000070 +#define ROCKET_SPD_HI 0x00000010 /* Use 56000 instead of 38400 bps */ +#define ROCKET_SPD_VHI 0x00000020 /* Use 115200 instead of 38400 bps */ +#define ROCKET_SPD_SHI 0x00000030 /* Use 230400 instead of 38400 bps */ +#define ROCKET_SPD_WARP 0x00000040 /* Use 460800 instead of 38400 bps */ +#define ROCKET_SAK 0x00000080 +#define ROCKET_SESSION_LOCKOUT 0x00000100 +#define ROCKET_PGRP_LOCKOUT 0x00000200 +#define ROCKET_RTS_TOGGLE 0x00000400 +#define ROCKET_MODE_MASK 0x00003000 +#define ROCKET_MODE_RS232 0x00000000 +#define ROCKET_MODE_RS485 0x00001000 +#define ROCKET_MODE_RS422 0x00002000 +#define ROCKET_FLAGS 0x00003FFF + +#define ROCKET_USR_MASK 0x0071 /* Legal flags that non-privileged + * users can set or reset */ + +/* + * For closing_wait and closing_wait2 + */ +#define ROCKET_CLOSING_WAIT_NONE ASYNC_CLOSING_WAIT_NONE +#define ROCKET_CLOSING_WAIT_INF ASYNC_CLOSING_WAIT_INF + +/* + * Rocketport ioctls -- "RP" + */ +#define RCKP_GET_STRUCT 0x00525001 +#define RCKP_GET_CONFIG 0x00525002 +#define RCKP_SET_CONFIG 0x00525003 +#define RCKP_GET_PORTS 0x00525004 +#define RCKP_RESET_RM2 0x00525005 +#define RCKP_GET_VERSION 0x00525006 + +/* Rocketport Models */ +#define MODEL_RP32INTF 0x0001 /* RP 32 port w/external I/F */ +#define MODEL_RP8INTF 0x0002 /* RP 8 port w/external I/F */ +#define MODEL_RP16INTF 0x0003 /* RP 16 port w/external I/F */ +#define MODEL_RP8OCTA 0x0005 /* RP 8 port w/octa cable */ +#define MODEL_RP4QUAD 0x0004 /* RP 4 port w/quad cable */ +#define MODEL_RP8J 0x0006 /* RP 8 port w/RJ11 connectors */ +#define MODEL_RP4J 0x0007 /* RP 4 port w/RJ45 connectors */ +#define MODEL_RP8SNI 0x0008 /* RP 8 port w/ DB78 SNI connector */ +#define MODEL_RP16SNI 0x0009 /* RP 16 port w/ DB78 SNI connector */ +#define MODEL_RPP4 0x000A /* RP Plus 4 port */ +#define MODEL_RPP8 0x000B /* RP Plus 8 port */ +#define MODEL_RP2_232 0x000E /* RP Plus 2 port RS232 */ +#define MODEL_RP2_422 0x000F /* RP Plus 2 port RS232 */ + +/* Rocketmodem II Models */ +#define MODEL_RP6M 0x000C /* RM 6 port */ +#define MODEL_RP4M 0x000D /* RM 4 port */ + +/* Universal PCI boards */ +#define MODEL_UPCI_RP32INTF 0x0801 /* RP UPCI 32 port w/external I/F */ +#define MODEL_UPCI_RP8INTF 0x0802 /* RP UPCI 8 port w/external I/F */ +#define MODEL_UPCI_RP16INTF 0x0803 /* RP UPCI 16 port w/external I/F */ +#define MODEL_UPCI_RP8OCTA 0x0805 /* RP UPCI 8 port w/octa cable */ +#define MODEL_UPCI_RM3_8PORT 0x080C /* RP UPCI Rocketmodem III 8 port */ +#define MODEL_UPCI_RM3_4PORT 0x080C /* RP UPCI Rocketmodem III 4 port */ + +/* Compact PCI 16 port */ +#define MODEL_CPCI_RP16INTF 0x0903 /* RP Compact PCI 16 port w/external I/F */ + +/* All ISA boards */ +#define MODEL_ISA 0x1000 diff --git a/drivers/tty/rocket_int.h b/drivers/tty/rocket_int.h new file mode 100644 index 000000000000..67e0f1e778a2 --- /dev/null +++ b/drivers/tty/rocket_int.h @@ -0,0 +1,1214 @@ +/* + * rocket_int.h --- internal header file for rocket.c + * + * Written by Theodore Ts'o, Copyright 1997. + * Copyright 1997 Comtrol Corporation. + * + */ + +/* + * Definition of the types in rcktpt_type + */ +#define ROCKET_TYPE_NORMAL 0 +#define ROCKET_TYPE_MODEM 1 +#define ROCKET_TYPE_MODEMII 2 +#define ROCKET_TYPE_MODEMIII 3 +#define ROCKET_TYPE_PC104 4 + +#include + +#include +#include + +typedef unsigned char Byte_t; +typedef unsigned int ByteIO_t; + +typedef unsigned int Word_t; +typedef unsigned int WordIO_t; + +typedef unsigned int DWordIO_t; + +/* + * Note! Normally the Linux I/O macros already take care of + * byte-swapping the I/O instructions. However, all accesses using + * sOutDW aren't really 32-bit accesses, but should be handled in byte + * order. Hence the use of the cpu_to_le32() macro to byte-swap + * things to no-op the byte swapping done by the big-endian outl() + * instruction. + */ + +static inline void sOutB(unsigned short port, unsigned char value) +{ +#ifdef ROCKET_DEBUG_IO + printk(KERN_DEBUG "sOutB(%x, %x)...\n", port, value); +#endif + outb_p(value, port); +} + +static inline void sOutW(unsigned short port, unsigned short value) +{ +#ifdef ROCKET_DEBUG_IO + printk(KERN_DEBUG "sOutW(%x, %x)...\n", port, value); +#endif + outw_p(value, port); +} + +static inline void out32(unsigned short port, Byte_t *p) +{ + u32 value = get_unaligned_le32(p); +#ifdef ROCKET_DEBUG_IO + printk(KERN_DEBUG "out32(%x, %lx)...\n", port, value); +#endif + outl_p(value, port); +} + +static inline unsigned char sInB(unsigned short port) +{ + return inb_p(port); +} + +static inline unsigned short sInW(unsigned short port) +{ + return inw_p(port); +} + +/* This is used to move arrays of bytes so byte swapping isn't appropriate. */ +#define sOutStrW(port, addr, count) if (count) outsw(port, addr, count) +#define sInStrW(port, addr, count) if (count) insw(port, addr, count) + +#define CTL_SIZE 8 +#define AIOP_CTL_SIZE 4 +#define CHAN_AIOP_SIZE 8 +#define MAX_PORTS_PER_AIOP 8 +#define MAX_AIOPS_PER_BOARD 4 +#define MAX_PORTS_PER_BOARD 32 + +/* Bus type ID */ +#define isISA 0 +#define isPCI 1 +#define isMC 2 + +/* Controller ID numbers */ +#define CTLID_NULL -1 /* no controller exists */ +#define CTLID_0001 0x0001 /* controller release 1 */ + +/* AIOP ID numbers, identifies AIOP type implementing channel */ +#define AIOPID_NULL -1 /* no AIOP or channel exists */ +#define AIOPID_0001 0x0001 /* AIOP release 1 */ + +/************************************************************************ + Global Register Offsets - Direct Access - Fixed values +************************************************************************/ + +#define _CMD_REG 0x38 /* Command Register 8 Write */ +#define _INT_CHAN 0x39 /* Interrupt Channel Register 8 Read */ +#define _INT_MASK 0x3A /* Interrupt Mask Register 8 Read / Write */ +#define _UNUSED 0x3B /* Unused 8 */ +#define _INDX_ADDR 0x3C /* Index Register Address 16 Write */ +#define _INDX_DATA 0x3E /* Index Register Data 8/16 Read / Write */ + +/************************************************************************ + Channel Register Offsets for 1st channel in AIOP - Direct Access +************************************************************************/ +#define _TD0 0x00 /* Transmit Data 16 Write */ +#define _RD0 0x00 /* Receive Data 16 Read */ +#define _CHN_STAT0 0x20 /* Channel Status 8/16 Read / Write */ +#define _FIFO_CNT0 0x10 /* Transmit/Receive FIFO Count 16 Read */ +#define _INT_ID0 0x30 /* Interrupt Identification 8 Read */ + +/************************************************************************ + Tx Control Register Offsets - Indexed - External - Fixed +************************************************************************/ +#define _TX_ENBLS 0x980 /* Tx Processor Enables Register 8 Read / Write */ +#define _TXCMP1 0x988 /* Transmit Compare Value #1 8 Read / Write */ +#define _TXCMP2 0x989 /* Transmit Compare Value #2 8 Read / Write */ +#define _TXREP1B1 0x98A /* Tx Replace Value #1 - Byte 1 8 Read / Write */ +#define _TXREP1B2 0x98B /* Tx Replace Value #1 - Byte 2 8 Read / Write */ +#define _TXREP2 0x98C /* Transmit Replace Value #2 8 Read / Write */ + +/************************************************************************ +Memory Controller Register Offsets - Indexed - External - Fixed +************************************************************************/ +#define _RX_FIFO 0x000 /* Rx FIFO */ +#define _TX_FIFO 0x800 /* Tx FIFO */ +#define _RXF_OUTP 0x990 /* Rx FIFO OUT pointer 16 Read / Write */ +#define _RXF_INP 0x992 /* Rx FIFO IN pointer 16 Read / Write */ +#define _TXF_OUTP 0x994 /* Tx FIFO OUT pointer 8 Read / Write */ +#define _TXF_INP 0x995 /* Tx FIFO IN pointer 8 Read / Write */ +#define _TXP_CNT 0x996 /* Tx Priority Count 8 Read / Write */ +#define _TXP_PNTR 0x997 /* Tx Priority Pointer 8 Read / Write */ + +#define PRI_PEND 0x80 /* Priority data pending (bit7, Tx pri cnt) */ +#define TXFIFO_SIZE 255 /* size of Tx FIFO */ +#define RXFIFO_SIZE 1023 /* size of Rx FIFO */ + +/************************************************************************ +Tx Priority Buffer - Indexed - External - Fixed +************************************************************************/ +#define _TXP_BUF 0x9C0 /* Tx Priority Buffer 32 Bytes Read / Write */ +#define TXP_SIZE 0x20 /* 32 bytes */ + +/************************************************************************ +Channel Register Offsets - Indexed - Internal - Fixed +************************************************************************/ + +#define _TX_CTRL 0xFF0 /* Transmit Control 16 Write */ +#define _RX_CTRL 0xFF2 /* Receive Control 8 Write */ +#define _BAUD 0xFF4 /* Baud Rate 16 Write */ +#define _CLK_PRE 0xFF6 /* Clock Prescaler 8 Write */ + +#define STMBREAK 0x08 /* BREAK */ +#define STMFRAME 0x04 /* framing error */ +#define STMRCVROVR 0x02 /* receiver over run error */ +#define STMPARITY 0x01 /* parity error */ +#define STMERROR (STMBREAK | STMFRAME | STMPARITY) +#define STMBREAKH 0x800 /* BREAK */ +#define STMFRAMEH 0x400 /* framing error */ +#define STMRCVROVRH 0x200 /* receiver over run error */ +#define STMPARITYH 0x100 /* parity error */ +#define STMERRORH (STMBREAKH | STMFRAMEH | STMPARITYH) + +#define CTS_ACT 0x20 /* CTS input asserted */ +#define DSR_ACT 0x10 /* DSR input asserted */ +#define CD_ACT 0x08 /* CD input asserted */ +#define TXFIFOMT 0x04 /* Tx FIFO is empty */ +#define TXSHRMT 0x02 /* Tx shift register is empty */ +#define RDA 0x01 /* Rx data available */ +#define DRAINED (TXFIFOMT | TXSHRMT) /* indicates Tx is drained */ + +#define STATMODE 0x8000 /* status mode enable bit */ +#define RXFOVERFL 0x2000 /* receive FIFO overflow */ +#define RX2MATCH 0x1000 /* receive compare byte 2 match */ +#define RX1MATCH 0x0800 /* receive compare byte 1 match */ +#define RXBREAK 0x0400 /* received BREAK */ +#define RXFRAME 0x0200 /* received framing error */ +#define RXPARITY 0x0100 /* received parity error */ +#define STATERROR (RXBREAK | RXFRAME | RXPARITY) + +#define CTSFC_EN 0x80 /* CTS flow control enable bit */ +#define RTSTOG_EN 0x40 /* RTS toggle enable bit */ +#define TXINT_EN 0x10 /* transmit interrupt enable */ +#define STOP2 0x08 /* enable 2 stop bits (0 = 1 stop) */ +#define PARITY_EN 0x04 /* enable parity (0 = no parity) */ +#define EVEN_PAR 0x02 /* even parity (0 = odd parity) */ +#define DATA8BIT 0x01 /* 8 bit data (0 = 7 bit data) */ + +#define SETBREAK 0x10 /* send break condition (must clear) */ +#define LOCALLOOP 0x08 /* local loopback set for test */ +#define SET_DTR 0x04 /* assert DTR */ +#define SET_RTS 0x02 /* assert RTS */ +#define TX_ENABLE 0x01 /* enable transmitter */ + +#define RTSFC_EN 0x40 /* RTS flow control enable */ +#define RXPROC_EN 0x20 /* receive processor enable */ +#define TRIG_NO 0x00 /* Rx FIFO trigger level 0 (no trigger) */ +#define TRIG_1 0x08 /* trigger level 1 char */ +#define TRIG_1_2 0x10 /* trigger level 1/2 */ +#define TRIG_7_8 0x18 /* trigger level 7/8 */ +#define TRIG_MASK 0x18 /* trigger level mask */ +#define SRCINT_EN 0x04 /* special Rx condition interrupt enable */ +#define RXINT_EN 0x02 /* Rx interrupt enable */ +#define MCINT_EN 0x01 /* modem change interrupt enable */ + +#define RXF_TRIG 0x20 /* Rx FIFO trigger level interrupt */ +#define TXFIFO_MT 0x10 /* Tx FIFO empty interrupt */ +#define SRC_INT 0x08 /* special receive condition interrupt */ +#define DELTA_CD 0x04 /* CD change interrupt */ +#define DELTA_CTS 0x02 /* CTS change interrupt */ +#define DELTA_DSR 0x01 /* DSR change interrupt */ + +#define REP1W2_EN 0x10 /* replace byte 1 with 2 bytes enable */ +#define IGN2_EN 0x08 /* ignore byte 2 enable */ +#define IGN1_EN 0x04 /* ignore byte 1 enable */ +#define COMP2_EN 0x02 /* compare byte 2 enable */ +#define COMP1_EN 0x01 /* compare byte 1 enable */ + +#define RESET_ALL 0x80 /* reset AIOP (all channels) */ +#define TXOVERIDE 0x40 /* Transmit software off override */ +#define RESETUART 0x20 /* reset channel's UART */ +#define RESTXFCNT 0x10 /* reset channel's Tx FIFO count register */ +#define RESRXFCNT 0x08 /* reset channel's Rx FIFO count register */ + +#define INTSTAT0 0x01 /* AIOP 0 interrupt status */ +#define INTSTAT1 0x02 /* AIOP 1 interrupt status */ +#define INTSTAT2 0x04 /* AIOP 2 interrupt status */ +#define INTSTAT3 0x08 /* AIOP 3 interrupt status */ + +#define INTR_EN 0x08 /* allow interrupts to host */ +#define INT_STROB 0x04 /* strobe and clear interrupt line (EOI) */ + +/************************************************************************** + MUDBAC remapped for PCI +**************************************************************************/ + +#define _CFG_INT_PCI 0x40 +#define _PCI_INT_FUNC 0x3A + +#define PCI_STROB 0x2000 /* bit 13 of int aiop register */ +#define INTR_EN_PCI 0x0010 /* allow interrupts to host */ + +/* + * Definitions for Universal PCI board registers + */ +#define _PCI_9030_INT_CTRL 0x4c /* Offsets from BAR1 */ +#define _PCI_9030_GPIO_CTRL 0x54 +#define PCI_INT_CTRL_AIOP 0x0001 +#define PCI_GPIO_CTRL_8PORT 0x4000 +#define _PCI_9030_RING_IND 0xc0 /* Offsets from BAR1 */ + +#define CHAN3_EN 0x08 /* enable AIOP 3 */ +#define CHAN2_EN 0x04 /* enable AIOP 2 */ +#define CHAN1_EN 0x02 /* enable AIOP 1 */ +#define CHAN0_EN 0x01 /* enable AIOP 0 */ +#define FREQ_DIS 0x00 +#define FREQ_274HZ 0x60 +#define FREQ_137HZ 0x50 +#define FREQ_69HZ 0x40 +#define FREQ_34HZ 0x30 +#define FREQ_17HZ 0x20 +#define FREQ_9HZ 0x10 +#define PERIODIC_ONLY 0x80 /* only PERIODIC interrupt */ + +#define CHANINT_EN 0x0100 /* flags to enable/disable channel ints */ + +#define RDATASIZE 72 +#define RREGDATASIZE 52 + +/* + * AIOP interrupt bits for ISA/PCI boards and UPCI boards. + */ +#define AIOP_INTR_BIT_0 0x0001 +#define AIOP_INTR_BIT_1 0x0002 +#define AIOP_INTR_BIT_2 0x0004 +#define AIOP_INTR_BIT_3 0x0008 + +#define AIOP_INTR_BITS ( \ + AIOP_INTR_BIT_0 \ + | AIOP_INTR_BIT_1 \ + | AIOP_INTR_BIT_2 \ + | AIOP_INTR_BIT_3) + +#define UPCI_AIOP_INTR_BIT_0 0x0004 +#define UPCI_AIOP_INTR_BIT_1 0x0020 +#define UPCI_AIOP_INTR_BIT_2 0x0100 +#define UPCI_AIOP_INTR_BIT_3 0x0800 + +#define UPCI_AIOP_INTR_BITS ( \ + UPCI_AIOP_INTR_BIT_0 \ + | UPCI_AIOP_INTR_BIT_1 \ + | UPCI_AIOP_INTR_BIT_2 \ + | UPCI_AIOP_INTR_BIT_3) + +/* Controller level information structure */ +typedef struct { + int CtlID; + int CtlNum; + int BusType; + int boardType; + int isUPCI; + WordIO_t PCIIO; + WordIO_t PCIIO2; + ByteIO_t MBaseIO; + ByteIO_t MReg1IO; + ByteIO_t MReg2IO; + ByteIO_t MReg3IO; + Byte_t MReg2; + Byte_t MReg3; + int NumAiop; + int AltChanRingIndicator; + ByteIO_t UPCIRingInd; + WordIO_t AiopIO[AIOP_CTL_SIZE]; + ByteIO_t AiopIntChanIO[AIOP_CTL_SIZE]; + int AiopID[AIOP_CTL_SIZE]; + int AiopNumChan[AIOP_CTL_SIZE]; + Word_t *AiopIntrBits; +} CONTROLLER_T; + +typedef CONTROLLER_T CONTROLLER_t; + +/* Channel level information structure */ +typedef struct { + CONTROLLER_T *CtlP; + int AiopNum; + int ChanID; + int ChanNum; + int rtsToggle; + + ByteIO_t Cmd; + ByteIO_t IntChan; + ByteIO_t IntMask; + DWordIO_t IndexAddr; + WordIO_t IndexData; + + WordIO_t TxRxData; + WordIO_t ChanStat; + WordIO_t TxRxCount; + ByteIO_t IntID; + + Word_t TxFIFO; + Word_t TxFIFOPtrs; + Word_t RxFIFO; + Word_t RxFIFOPtrs; + Word_t TxPrioCnt; + Word_t TxPrioPtr; + Word_t TxPrioBuf; + + Byte_t R[RREGDATASIZE]; + + Byte_t BaudDiv[4]; + Byte_t TxControl[4]; + Byte_t RxControl[4]; + Byte_t TxEnables[4]; + Byte_t TxCompare[4]; + Byte_t TxReplace1[4]; + Byte_t TxReplace2[4]; +} CHANNEL_T; + +typedef CHANNEL_T CHANNEL_t; +typedef CHANNEL_T *CHANPTR_T; + +#define InterfaceModeRS232 0x00 +#define InterfaceModeRS422 0x08 +#define InterfaceModeRS485 0x10 +#define InterfaceModeRS232T 0x18 + +/*************************************************************************** +Function: sClrBreak +Purpose: Stop sending a transmit BREAK signal +Call: sClrBreak(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sClrBreak(ChP) \ +do { \ + (ChP)->TxControl[3] &= ~SETBREAK; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sClrDTR +Purpose: Clr the DTR output +Call: sClrDTR(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sClrDTR(ChP) \ +do { \ + (ChP)->TxControl[3] &= ~SET_DTR; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sClrRTS +Purpose: Clr the RTS output +Call: sClrRTS(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sClrRTS(ChP) \ +do { \ + if ((ChP)->rtsToggle) break; \ + (ChP)->TxControl[3] &= ~SET_RTS; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sClrTxXOFF +Purpose: Clear any existing transmit software flow control off condition +Call: sClrTxXOFF(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sClrTxXOFF(ChP) \ +do { \ + sOutB((ChP)->Cmd,TXOVERIDE | (Byte_t)(ChP)->ChanNum); \ + sOutB((ChP)->Cmd,(Byte_t)(ChP)->ChanNum); \ +} while (0) + +/*************************************************************************** +Function: sCtlNumToCtlPtr +Purpose: Convert a controller number to controller structure pointer +Call: sCtlNumToCtlPtr(CtlNum) + int CtlNum; Controller number +Return: CONTROLLER_T *: Ptr to controller structure +*/ +#define sCtlNumToCtlPtr(CTLNUM) &sController[CTLNUM] + +/*************************************************************************** +Function: sControllerEOI +Purpose: Strobe the MUDBAC's End Of Interrupt bit. +Call: sControllerEOI(CtlP) + CONTROLLER_T *CtlP; Ptr to controller structure +*/ +#define sControllerEOI(CTLP) sOutB((CTLP)->MReg2IO,(CTLP)->MReg2 | INT_STROB) + +/*************************************************************************** +Function: sPCIControllerEOI +Purpose: Strobe the PCI End Of Interrupt bit. + For the UPCI boards, toggle the AIOP interrupt enable bit + (this was taken from the Windows driver). +Call: sPCIControllerEOI(CtlP) + CONTROLLER_T *CtlP; Ptr to controller structure +*/ +#define sPCIControllerEOI(CTLP) \ +do { \ + if ((CTLP)->isUPCI) { \ + Word_t w = sInW((CTLP)->PCIIO); \ + sOutW((CTLP)->PCIIO, (w ^ PCI_INT_CTRL_AIOP)); \ + sOutW((CTLP)->PCIIO, w); \ + } \ + else { \ + sOutW((CTLP)->PCIIO, PCI_STROB); \ + } \ +} while (0) + +/*************************************************************************** +Function: sDisAiop +Purpose: Disable I/O access to an AIOP +Call: sDisAiop(CltP) + CONTROLLER_T *CtlP; Ptr to controller structure + int AiopNum; Number of AIOP on controller +*/ +#define sDisAiop(CTLP,AIOPNUM) \ +do { \ + (CTLP)->MReg3 &= sBitMapClrTbl[AIOPNUM]; \ + sOutB((CTLP)->MReg3IO,(CTLP)->MReg3); \ +} while (0) + +/*************************************************************************** +Function: sDisCTSFlowCtl +Purpose: Disable output flow control using CTS +Call: sDisCTSFlowCtl(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sDisCTSFlowCtl(ChP) \ +do { \ + (ChP)->TxControl[2] &= ~CTSFC_EN; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sDisIXANY +Purpose: Disable IXANY Software Flow Control +Call: sDisIXANY(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sDisIXANY(ChP) \ +do { \ + (ChP)->R[0x0e] = 0x86; \ + out32((ChP)->IndexAddr,&(ChP)->R[0x0c]); \ +} while (0) + +/*************************************************************************** +Function: DisParity +Purpose: Disable parity +Call: sDisParity(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: Function sSetParity() can be used in place of functions sEnParity(), + sDisParity(), sSetOddParity(), and sSetEvenParity(). +*/ +#define sDisParity(ChP) \ +do { \ + (ChP)->TxControl[2] &= ~PARITY_EN; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sDisRTSToggle +Purpose: Disable RTS toggle +Call: sDisRTSToggle(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sDisRTSToggle(ChP) \ +do { \ + (ChP)->TxControl[2] &= ~RTSTOG_EN; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ + (ChP)->rtsToggle = 0; \ +} while (0) + +/*************************************************************************** +Function: sDisRxFIFO +Purpose: Disable Rx FIFO +Call: sDisRxFIFO(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sDisRxFIFO(ChP) \ +do { \ + (ChP)->R[0x32] = 0x0a; \ + out32((ChP)->IndexAddr,&(ChP)->R[0x30]); \ +} while (0) + +/*************************************************************************** +Function: sDisRxStatusMode +Purpose: Disable the Rx status mode +Call: sDisRxStatusMode(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: This takes the channel out of the receive status mode. All + subsequent reads of receive data using sReadRxWord() will return + two data bytes. +*/ +#define sDisRxStatusMode(ChP) sOutW((ChP)->ChanStat,0) + +/*************************************************************************** +Function: sDisTransmit +Purpose: Disable transmit +Call: sDisTransmit(ChP) + CHANNEL_T *ChP; Ptr to channel structure + This disables movement of Tx data from the Tx FIFO into the 1 byte + Tx buffer. Therefore there could be up to a 2 byte latency + between the time sDisTransmit() is called and the transmit buffer + and transmit shift register going completely empty. +*/ +#define sDisTransmit(ChP) \ +do { \ + (ChP)->TxControl[3] &= ~TX_ENABLE; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sDisTxSoftFlowCtl +Purpose: Disable Tx Software Flow Control +Call: sDisTxSoftFlowCtl(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sDisTxSoftFlowCtl(ChP) \ +do { \ + (ChP)->R[0x06] = 0x8a; \ + out32((ChP)->IndexAddr,&(ChP)->R[0x04]); \ +} while (0) + +/*************************************************************************** +Function: sEnAiop +Purpose: Enable I/O access to an AIOP +Call: sEnAiop(CltP) + CONTROLLER_T *CtlP; Ptr to controller structure + int AiopNum; Number of AIOP on controller +*/ +#define sEnAiop(CTLP,AIOPNUM) \ +do { \ + (CTLP)->MReg3 |= sBitMapSetTbl[AIOPNUM]; \ + sOutB((CTLP)->MReg3IO,(CTLP)->MReg3); \ +} while (0) + +/*************************************************************************** +Function: sEnCTSFlowCtl +Purpose: Enable output flow control using CTS +Call: sEnCTSFlowCtl(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sEnCTSFlowCtl(ChP) \ +do { \ + (ChP)->TxControl[2] |= CTSFC_EN; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sEnIXANY +Purpose: Enable IXANY Software Flow Control +Call: sEnIXANY(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sEnIXANY(ChP) \ +do { \ + (ChP)->R[0x0e] = 0x21; \ + out32((ChP)->IndexAddr,&(ChP)->R[0x0c]); \ +} while (0) + +/*************************************************************************** +Function: EnParity +Purpose: Enable parity +Call: sEnParity(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: Function sSetParity() can be used in place of functions sEnParity(), + sDisParity(), sSetOddParity(), and sSetEvenParity(). + +Warnings: Before enabling parity odd or even parity should be chosen using + functions sSetOddParity() or sSetEvenParity(). +*/ +#define sEnParity(ChP) \ +do { \ + (ChP)->TxControl[2] |= PARITY_EN; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sEnRTSToggle +Purpose: Enable RTS toggle +Call: sEnRTSToggle(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: This function will disable RTS flow control and clear the RTS + line to allow operation of RTS toggle. +*/ +#define sEnRTSToggle(ChP) \ +do { \ + (ChP)->RxControl[2] &= ~RTSFC_EN; \ + out32((ChP)->IndexAddr,(ChP)->RxControl); \ + (ChP)->TxControl[2] |= RTSTOG_EN; \ + (ChP)->TxControl[3] &= ~SET_RTS; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ + (ChP)->rtsToggle = 1; \ +} while (0) + +/*************************************************************************** +Function: sEnRxFIFO +Purpose: Enable Rx FIFO +Call: sEnRxFIFO(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sEnRxFIFO(ChP) \ +do { \ + (ChP)->R[0x32] = 0x08; \ + out32((ChP)->IndexAddr,&(ChP)->R[0x30]); \ +} while (0) + +/*************************************************************************** +Function: sEnRxProcessor +Purpose: Enable the receive processor +Call: sEnRxProcessor(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: This function is used to start the receive processor. When + the channel is in the reset state the receive processor is not + running. This is done to prevent the receive processor from + executing invalid microcode instructions prior to the + downloading of the microcode. + +Warnings: This function must be called after valid microcode has been + downloaded to the AIOP, and it must not be called before the + microcode has been downloaded. +*/ +#define sEnRxProcessor(ChP) \ +do { \ + (ChP)->RxControl[2] |= RXPROC_EN; \ + out32((ChP)->IndexAddr,(ChP)->RxControl); \ +} while (0) + +/*************************************************************************** +Function: sEnRxStatusMode +Purpose: Enable the Rx status mode +Call: sEnRxStatusMode(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: This places the channel in the receive status mode. All subsequent + reads of receive data using sReadRxWord() will return a data byte + in the low word and a status byte in the high word. + +*/ +#define sEnRxStatusMode(ChP) sOutW((ChP)->ChanStat,STATMODE) + +/*************************************************************************** +Function: sEnTransmit +Purpose: Enable transmit +Call: sEnTransmit(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sEnTransmit(ChP) \ +do { \ + (ChP)->TxControl[3] |= TX_ENABLE; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sEnTxSoftFlowCtl +Purpose: Enable Tx Software Flow Control +Call: sEnTxSoftFlowCtl(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sEnTxSoftFlowCtl(ChP) \ +do { \ + (ChP)->R[0x06] = 0xc5; \ + out32((ChP)->IndexAddr,&(ChP)->R[0x04]); \ +} while (0) + +/*************************************************************************** +Function: sGetAiopIntStatus +Purpose: Get the AIOP interrupt status +Call: sGetAiopIntStatus(CtlP,AiopNum) + CONTROLLER_T *CtlP; Ptr to controller structure + int AiopNum; AIOP number +Return: Byte_t: The AIOP interrupt status. Bits 0 through 7 + represent channels 0 through 7 respectively. If a + bit is set that channel is interrupting. +*/ +#define sGetAiopIntStatus(CTLP,AIOPNUM) sInB((CTLP)->AiopIntChanIO[AIOPNUM]) + +/*************************************************************************** +Function: sGetAiopNumChan +Purpose: Get the number of channels supported by an AIOP +Call: sGetAiopNumChan(CtlP,AiopNum) + CONTROLLER_T *CtlP; Ptr to controller structure + int AiopNum; AIOP number +Return: int: The number of channels supported by the AIOP +*/ +#define sGetAiopNumChan(CTLP,AIOPNUM) (CTLP)->AiopNumChan[AIOPNUM] + +/*************************************************************************** +Function: sGetChanIntID +Purpose: Get a channel's interrupt identification byte +Call: sGetChanIntID(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: Byte_t: The channel interrupt ID. Can be any + combination of the following flags: + RXF_TRIG: Rx FIFO trigger level interrupt + TXFIFO_MT: Tx FIFO empty interrupt + SRC_INT: Special receive condition interrupt + DELTA_CD: CD change interrupt + DELTA_CTS: CTS change interrupt + DELTA_DSR: DSR change interrupt +*/ +#define sGetChanIntID(ChP) (sInB((ChP)->IntID) & (RXF_TRIG | TXFIFO_MT | SRC_INT | DELTA_CD | DELTA_CTS | DELTA_DSR)) + +/*************************************************************************** +Function: sGetChanNum +Purpose: Get the number of a channel within an AIOP +Call: sGetChanNum(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: int: Channel number within AIOP, or NULLCHAN if channel does + not exist. +*/ +#define sGetChanNum(ChP) (ChP)->ChanNum + +/*************************************************************************** +Function: sGetChanStatus +Purpose: Get the channel status +Call: sGetChanStatus(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: Word_t: The channel status. Can be any combination of + the following flags: + LOW BYTE FLAGS + CTS_ACT: CTS input asserted + DSR_ACT: DSR input asserted + CD_ACT: CD input asserted + TXFIFOMT: Tx FIFO is empty + TXSHRMT: Tx shift register is empty + RDA: Rx data available + + HIGH BYTE FLAGS + STATMODE: status mode enable bit + RXFOVERFL: receive FIFO overflow + RX2MATCH: receive compare byte 2 match + RX1MATCH: receive compare byte 1 match + RXBREAK: received BREAK + RXFRAME: received framing error + RXPARITY: received parity error +Warnings: This function will clear the high byte flags in the Channel + Status Register. +*/ +#define sGetChanStatus(ChP) sInW((ChP)->ChanStat) + +/*************************************************************************** +Function: sGetChanStatusLo +Purpose: Get the low byte only of the channel status +Call: sGetChanStatusLo(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: Byte_t: The channel status low byte. Can be any combination + of the following flags: + CTS_ACT: CTS input asserted + DSR_ACT: DSR input asserted + CD_ACT: CD input asserted + TXFIFOMT: Tx FIFO is empty + TXSHRMT: Tx shift register is empty + RDA: Rx data available +*/ +#define sGetChanStatusLo(ChP) sInB((ByteIO_t)(ChP)->ChanStat) + +/********************************************************************** + * Get RI status of channel + * Defined as a function in rocket.c -aes + */ +#if 0 +#define sGetChanRI(ChP) ((ChP)->CtlP->AltChanRingIndicator ? \ + (sInB((ByteIO_t)((ChP)->ChanStat+8)) & DSR_ACT) : \ + (((ChP)->CtlP->boardType == ROCKET_TYPE_PC104) ? \ + (!(sInB((ChP)->CtlP->AiopIO[3]) & sBitMapSetTbl[(ChP)->ChanNum])) : \ + 0)) +#endif + +/*************************************************************************** +Function: sGetControllerIntStatus +Purpose: Get the controller interrupt status +Call: sGetControllerIntStatus(CtlP) + CONTROLLER_T *CtlP; Ptr to controller structure +Return: Byte_t: The controller interrupt status in the lower 4 + bits. Bits 0 through 3 represent AIOP's 0 + through 3 respectively. If a bit is set that + AIOP is interrupting. Bits 4 through 7 will + always be cleared. +*/ +#define sGetControllerIntStatus(CTLP) (sInB((CTLP)->MReg1IO) & 0x0f) + +/*************************************************************************** +Function: sPCIGetControllerIntStatus +Purpose: Get the controller interrupt status +Call: sPCIGetControllerIntStatus(CtlP) + CONTROLLER_T *CtlP; Ptr to controller structure +Return: unsigned char: The controller interrupt status in the lower 4 + bits and bit 4. Bits 0 through 3 represent AIOP's 0 + through 3 respectively. Bit 4 is set if the int + was generated from periodic. If a bit is set the + AIOP is interrupting. +*/ +#define sPCIGetControllerIntStatus(CTLP) \ + ((CTLP)->isUPCI ? \ + (sInW((CTLP)->PCIIO2) & UPCI_AIOP_INTR_BITS) : \ + ((sInW((CTLP)->PCIIO) >> 8) & AIOP_INTR_BITS)) + +/*************************************************************************** + +Function: sGetRxCnt +Purpose: Get the number of data bytes in the Rx FIFO +Call: sGetRxCnt(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: int: The number of data bytes in the Rx FIFO. +Comments: Byte read of count register is required to obtain Rx count. + +*/ +#define sGetRxCnt(ChP) sInW((ChP)->TxRxCount) + +/*************************************************************************** +Function: sGetTxCnt +Purpose: Get the number of data bytes in the Tx FIFO +Call: sGetTxCnt(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: Byte_t: The number of data bytes in the Tx FIFO. +Comments: Byte read of count register is required to obtain Tx count. + +*/ +#define sGetTxCnt(ChP) sInB((ByteIO_t)(ChP)->TxRxCount) + +/***************************************************************************** +Function: sGetTxRxDataIO +Purpose: Get the I/O address of a channel's TxRx Data register +Call: sGetTxRxDataIO(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Return: WordIO_t: I/O address of a channel's TxRx Data register +*/ +#define sGetTxRxDataIO(ChP) (ChP)->TxRxData + +/*************************************************************************** +Function: sInitChanDefaults +Purpose: Initialize a channel structure to it's default state. +Call: sInitChanDefaults(ChP) + CHANNEL_T *ChP; Ptr to the channel structure +Comments: This function must be called once for every channel structure + that exists before any other SSCI calls can be made. + +*/ +#define sInitChanDefaults(ChP) \ +do { \ + (ChP)->CtlP = NULLCTLPTR; \ + (ChP)->AiopNum = NULLAIOP; \ + (ChP)->ChanID = AIOPID_NULL; \ + (ChP)->ChanNum = NULLCHAN; \ +} while (0) + +/*************************************************************************** +Function: sResetAiopByNum +Purpose: Reset the AIOP by number +Call: sResetAiopByNum(CTLP,AIOPNUM) + CONTROLLER_T CTLP; Ptr to controller structure + AIOPNUM; AIOP index +*/ +#define sResetAiopByNum(CTLP,AIOPNUM) \ +do { \ + sOutB((CTLP)->AiopIO[(AIOPNUM)]+_CMD_REG,RESET_ALL); \ + sOutB((CTLP)->AiopIO[(AIOPNUM)]+_CMD_REG,0x0); \ +} while (0) + +/*************************************************************************** +Function: sSendBreak +Purpose: Send a transmit BREAK signal +Call: sSendBreak(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sSendBreak(ChP) \ +do { \ + (ChP)->TxControl[3] |= SETBREAK; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetBaud +Purpose: Set baud rate +Call: sSetBaud(ChP,Divisor) + CHANNEL_T *ChP; Ptr to channel structure + Word_t Divisor; 16 bit baud rate divisor for channel +*/ +#define sSetBaud(ChP,DIVISOR) \ +do { \ + (ChP)->BaudDiv[2] = (Byte_t)(DIVISOR); \ + (ChP)->BaudDiv[3] = (Byte_t)((DIVISOR) >> 8); \ + out32((ChP)->IndexAddr,(ChP)->BaudDiv); \ +} while (0) + +/*************************************************************************** +Function: sSetData7 +Purpose: Set data bits to 7 +Call: sSetData7(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sSetData7(ChP) \ +do { \ + (ChP)->TxControl[2] &= ~DATA8BIT; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetData8 +Purpose: Set data bits to 8 +Call: sSetData8(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sSetData8(ChP) \ +do { \ + (ChP)->TxControl[2] |= DATA8BIT; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetDTR +Purpose: Set the DTR output +Call: sSetDTR(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sSetDTR(ChP) \ +do { \ + (ChP)->TxControl[3] |= SET_DTR; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetEvenParity +Purpose: Set even parity +Call: sSetEvenParity(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: Function sSetParity() can be used in place of functions sEnParity(), + sDisParity(), sSetOddParity(), and sSetEvenParity(). + +Warnings: This function has no effect unless parity is enabled with function + sEnParity(). +*/ +#define sSetEvenParity(ChP) \ +do { \ + (ChP)->TxControl[2] |= EVEN_PAR; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetOddParity +Purpose: Set odd parity +Call: sSetOddParity(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: Function sSetParity() can be used in place of functions sEnParity(), + sDisParity(), sSetOddParity(), and sSetEvenParity(). + +Warnings: This function has no effect unless parity is enabled with function + sEnParity(). +*/ +#define sSetOddParity(ChP) \ +do { \ + (ChP)->TxControl[2] &= ~EVEN_PAR; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetRTS +Purpose: Set the RTS output +Call: sSetRTS(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sSetRTS(ChP) \ +do { \ + if ((ChP)->rtsToggle) break; \ + (ChP)->TxControl[3] |= SET_RTS; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetRxTrigger +Purpose: Set the Rx FIFO trigger level +Call: sSetRxProcessor(ChP,Level) + CHANNEL_T *ChP; Ptr to channel structure + Byte_t Level; Number of characters in Rx FIFO at which the + interrupt will be generated. Can be any of the following flags: + + TRIG_NO: no trigger + TRIG_1: 1 character in FIFO + TRIG_1_2: FIFO 1/2 full + TRIG_7_8: FIFO 7/8 full +Comments: An interrupt will be generated when the trigger level is reached + only if function sEnInterrupt() has been called with flag + RXINT_EN set. The RXF_TRIG flag in the Interrupt Idenfification + register will be set whenever the trigger level is reached + regardless of the setting of RXINT_EN. + +*/ +#define sSetRxTrigger(ChP,LEVEL) \ +do { \ + (ChP)->RxControl[2] &= ~TRIG_MASK; \ + (ChP)->RxControl[2] |= LEVEL; \ + out32((ChP)->IndexAddr,(ChP)->RxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetStop1 +Purpose: Set stop bits to 1 +Call: sSetStop1(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sSetStop1(ChP) \ +do { \ + (ChP)->TxControl[2] &= ~STOP2; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetStop2 +Purpose: Set stop bits to 2 +Call: sSetStop2(ChP) + CHANNEL_T *ChP; Ptr to channel structure +*/ +#define sSetStop2(ChP) \ +do { \ + (ChP)->TxControl[2] |= STOP2; \ + out32((ChP)->IndexAddr,(ChP)->TxControl); \ +} while (0) + +/*************************************************************************** +Function: sSetTxXOFFChar +Purpose: Set the Tx XOFF flow control character +Call: sSetTxXOFFChar(ChP,Ch) + CHANNEL_T *ChP; Ptr to channel structure + Byte_t Ch; The value to set the Tx XOFF character to +*/ +#define sSetTxXOFFChar(ChP,CH) \ +do { \ + (ChP)->R[0x07] = (CH); \ + out32((ChP)->IndexAddr,&(ChP)->R[0x04]); \ +} while (0) + +/*************************************************************************** +Function: sSetTxXONChar +Purpose: Set the Tx XON flow control character +Call: sSetTxXONChar(ChP,Ch) + CHANNEL_T *ChP; Ptr to channel structure + Byte_t Ch; The value to set the Tx XON character to +*/ +#define sSetTxXONChar(ChP,CH) \ +do { \ + (ChP)->R[0x0b] = (CH); \ + out32((ChP)->IndexAddr,&(ChP)->R[0x08]); \ +} while (0) + +/*************************************************************************** +Function: sStartRxProcessor +Purpose: Start a channel's receive processor +Call: sStartRxProcessor(ChP) + CHANNEL_T *ChP; Ptr to channel structure +Comments: This function is used to start a Rx processor after it was + stopped with sStopRxProcessor() or sStopSWInFlowCtl(). It + will restart both the Rx processor and software input flow control. + +*/ +#define sStartRxProcessor(ChP) out32((ChP)->IndexAddr,&(ChP)->R[0]) + +/*************************************************************************** +Function: sWriteTxByte +Purpose: Write a transmit data byte to a channel. + ByteIO_t io: Channel transmit register I/O address. This can + be obtained with sGetTxRxDataIO(). + Byte_t Data; The transmit data byte. +Warnings: This function writes the data byte without checking to see if + sMaxTxSize is exceeded in the Tx FIFO. +*/ +#define sWriteTxByte(IO,DATA) sOutB(IO,DATA) + +/* + * Begin Linux specific definitions for the Rocketport driver + * + * This code is Copyright Theodore Ts'o, 1995-1997 + */ + +struct r_port { + int magic; + struct tty_port port; + int line; + int flags; /* Don't yet match the ASY_ flags!! */ + unsigned int board:3; + unsigned int aiop:2; + unsigned int chan:3; + CONTROLLER_t *ctlp; + CHANNEL_t channel; + int intmask; + int xmit_fifo_room; /* room in xmit fifo */ + unsigned char *xmit_buf; + int xmit_head; + int xmit_tail; + int xmit_cnt; + int cd_status; + int ignore_status_mask; + int read_status_mask; + int cps; + + struct completion close_wait; /* Not yet matching the core */ + spinlock_t slock; + struct mutex write_mtx; +}; + +#define RPORT_MAGIC 0x525001 + +#define NUM_BOARDS 8 +#define MAX_RP_PORTS (32*NUM_BOARDS) + +/* + * The size of the xmit buffer is 1 page, or 4096 bytes + */ +#define XMIT_BUF_SIZE 4096 + +/* number of characters left in xmit buffer before we ask for more */ +#define WAKEUP_CHARS 256 + +/* + * Assigned major numbers for the Comtrol Rocketport + */ +#define TTY_ROCKET_MAJOR 46 +#define CUA_ROCKET_MAJOR 47 + +#ifdef PCI_VENDOR_ID_RP +#undef PCI_VENDOR_ID_RP +#undef PCI_DEVICE_ID_RP8OCTA +#undef PCI_DEVICE_ID_RP8INTF +#undef PCI_DEVICE_ID_RP16INTF +#undef PCI_DEVICE_ID_RP32INTF +#undef PCI_DEVICE_ID_URP8OCTA +#undef PCI_DEVICE_ID_URP8INTF +#undef PCI_DEVICE_ID_URP16INTF +#undef PCI_DEVICE_ID_CRP16INTF +#undef PCI_DEVICE_ID_URP32INTF +#endif + +/* Comtrol PCI Vendor ID */ +#define PCI_VENDOR_ID_RP 0x11fe + +/* Comtrol Device ID's */ +#define PCI_DEVICE_ID_RP32INTF 0x0001 /* Rocketport 32 port w/external I/F */ +#define PCI_DEVICE_ID_RP8INTF 0x0002 /* Rocketport 8 port w/external I/F */ +#define PCI_DEVICE_ID_RP16INTF 0x0003 /* Rocketport 16 port w/external I/F */ +#define PCI_DEVICE_ID_RP4QUAD 0x0004 /* Rocketport 4 port w/quad cable */ +#define PCI_DEVICE_ID_RP8OCTA 0x0005 /* Rocketport 8 port w/octa cable */ +#define PCI_DEVICE_ID_RP8J 0x0006 /* Rocketport 8 port w/RJ11 connectors */ +#define PCI_DEVICE_ID_RP4J 0x0007 /* Rocketport 4 port w/RJ11 connectors */ +#define PCI_DEVICE_ID_RP8SNI 0x0008 /* Rocketport 8 port w/ DB78 SNI (Siemens) connector */ +#define PCI_DEVICE_ID_RP16SNI 0x0009 /* Rocketport 16 port w/ DB78 SNI (Siemens) connector */ +#define PCI_DEVICE_ID_RPP4 0x000A /* Rocketport Plus 4 port */ +#define PCI_DEVICE_ID_RPP8 0x000B /* Rocketport Plus 8 port */ +#define PCI_DEVICE_ID_RP6M 0x000C /* RocketModem 6 port */ +#define PCI_DEVICE_ID_RP4M 0x000D /* RocketModem 4 port */ +#define PCI_DEVICE_ID_RP2_232 0x000E /* Rocketport Plus 2 port RS232 */ +#define PCI_DEVICE_ID_RP2_422 0x000F /* Rocketport Plus 2 port RS422 */ + +/* Universal PCI boards */ +#define PCI_DEVICE_ID_URP32INTF 0x0801 /* Rocketport UPCI 32 port w/external I/F */ +#define PCI_DEVICE_ID_URP8INTF 0x0802 /* Rocketport UPCI 8 port w/external I/F */ +#define PCI_DEVICE_ID_URP16INTF 0x0803 /* Rocketport UPCI 16 port w/external I/F */ +#define PCI_DEVICE_ID_URP8OCTA 0x0805 /* Rocketport UPCI 8 port w/octa cable */ +#define PCI_DEVICE_ID_UPCI_RM3_8PORT 0x080C /* Rocketmodem III 8 port */ +#define PCI_DEVICE_ID_UPCI_RM3_4PORT 0x080D /* Rocketmodem III 4 port */ + +/* Compact PCI device */ +#define PCI_DEVICE_ID_CRP16INTF 0x0903 /* Rocketport Compact PCI 16 port w/external I/F */ + diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c new file mode 100644 index 000000000000..18888d005a0a --- /dev/null +++ b/drivers/tty/synclink.c @@ -0,0 +1,8119 @@ +/* + * linux/drivers/char/synclink.c + * + * $Id: synclink.c,v 4.38 2005/11/07 16:30:34 paulkf Exp $ + * + * Device driver for Microgate SyncLink ISA and PCI + * high speed multiprotocol serial adapters. + * + * written by Paul Fulghum for Microgate Corporation + * paulkf@microgate.com + * + * Microgate and SyncLink are trademarks of Microgate Corporation + * + * Derived from serial.c written by Theodore Ts'o and Linus Torvalds + * + * Original release 01/11/99 + * + * This code is released under the GNU General Public License (GPL) + * + * This driver is primarily intended for use in synchronous + * HDLC mode. Asynchronous mode is also provided. + * + * When operating in synchronous mode, each call to mgsl_write() + * contains exactly one complete HDLC frame. Calling mgsl_put_char + * will start assembling an HDLC frame that will not be sent until + * mgsl_flush_chars or mgsl_write is called. + * + * Synchronous receive data is reported as complete frames. To accomplish + * this, the TTY flip buffer is bypassed (too small to hold largest + * frame and may fragment frames) and the line discipline + * receive entry point is called directly. + * + * This driver has been tested with a slightly modified ppp.c driver + * for synchronous PPP. + * + * 2000/02/16 + * Added interface for syncppp.c driver (an alternate synchronous PPP + * implementation that also supports Cisco HDLC). Each device instance + * registers as a tty device AND a network device (if dosyncppp option + * is set for the device). The functionality is determined by which + * device interface is opened. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#if defined(__i386__) +# define BREAKPOINT() asm(" int $3"); +#else +# define BREAKPOINT() { } +#endif + +#define MAX_ISA_DEVICES 10 +#define MAX_PCI_DEVICES 10 +#define MAX_TOTAL_DEVICES 20 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_MODULE)) +#define SYNCLINK_GENERIC_HDLC 1 +#else +#define SYNCLINK_GENERIC_HDLC 0 +#endif + +#define GET_USER(error,value,addr) error = get_user(value,addr) +#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0 +#define PUT_USER(error,value,addr) error = put_user(value,addr) +#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0 + +#include + +#define RCLRVALUE 0xffff + +static MGSL_PARAMS default_params = { + MGSL_MODE_HDLC, /* unsigned long mode */ + 0, /* unsigned char loopback; */ + HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */ + HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */ + 0, /* unsigned long clock_speed; */ + 0xff, /* unsigned char addr_filter; */ + HDLC_CRC_16_CCITT, /* unsigned short crc_type; */ + HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */ + HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */ + 9600, /* unsigned long data_rate; */ + 8, /* unsigned char data_bits; */ + 1, /* unsigned char stop_bits; */ + ASYNC_PARITY_NONE /* unsigned char parity; */ +}; + +#define SHARED_MEM_ADDRESS_SIZE 0x40000 +#define BUFFERLISTSIZE 4096 +#define DMABUFFERSIZE 4096 +#define MAXRXFRAMES 7 + +typedef struct _DMABUFFERENTRY +{ + u32 phys_addr; /* 32-bit flat physical address of data buffer */ + volatile u16 count; /* buffer size/data count */ + volatile u16 status; /* Control/status field */ + volatile u16 rcc; /* character count field */ + u16 reserved; /* padding required by 16C32 */ + u32 link; /* 32-bit flat link to next buffer entry */ + char *virt_addr; /* virtual address of data buffer */ + u32 phys_entry; /* physical address of this buffer entry */ + dma_addr_t dma_addr; +} DMABUFFERENTRY, *DMAPBUFFERENTRY; + +/* The queue of BH actions to be performed */ + +#define BH_RECEIVE 1 +#define BH_TRANSMIT 2 +#define BH_STATUS 4 + +#define IO_PIN_SHUTDOWN_LIMIT 100 + +struct _input_signal_events { + int ri_up; + int ri_down; + int dsr_up; + int dsr_down; + int dcd_up; + int dcd_down; + int cts_up; + int cts_down; +}; + +/* transmit holding buffer definitions*/ +#define MAX_TX_HOLDING_BUFFERS 5 +struct tx_holding_buffer { + int buffer_size; + unsigned char * buffer; +}; + + +/* + * Device instance data structure + */ + +struct mgsl_struct { + int magic; + struct tty_port port; + int line; + int hw_version; + + struct mgsl_icount icount; + + int timeout; + int x_char; /* xon/xoff character */ + u16 read_status_mask; + u16 ignore_status_mask; + unsigned char *xmit_buf; + int xmit_head; + int xmit_tail; + int xmit_cnt; + + wait_queue_head_t status_event_wait_q; + wait_queue_head_t event_wait_q; + struct timer_list tx_timer; /* HDLC transmit timeout timer */ + struct mgsl_struct *next_device; /* device list link */ + + spinlock_t irq_spinlock; /* spinlock for synchronizing with ISR */ + struct work_struct task; /* task structure for scheduling bh */ + + u32 EventMask; /* event trigger mask */ + u32 RecordedEvents; /* pending events */ + + u32 max_frame_size; /* as set by device config */ + + u32 pending_bh; + + bool bh_running; /* Protection from multiple */ + int isr_overflow; + bool bh_requested; + + int dcd_chkcount; /* check counts to prevent */ + int cts_chkcount; /* too many IRQs if a signal */ + int dsr_chkcount; /* is floating */ + int ri_chkcount; + + char *buffer_list; /* virtual address of Rx & Tx buffer lists */ + u32 buffer_list_phys; + dma_addr_t buffer_list_dma_addr; + + unsigned int rx_buffer_count; /* count of total allocated Rx buffers */ + DMABUFFERENTRY *rx_buffer_list; /* list of receive buffer entries */ + unsigned int current_rx_buffer; + + int num_tx_dma_buffers; /* number of tx dma frames required */ + int tx_dma_buffers_used; + unsigned int tx_buffer_count; /* count of total allocated Tx buffers */ + DMABUFFERENTRY *tx_buffer_list; /* list of transmit buffer entries */ + int start_tx_dma_buffer; /* tx dma buffer to start tx dma operation */ + int current_tx_buffer; /* next tx dma buffer to be loaded */ + + unsigned char *intermediate_rxbuffer; + + int num_tx_holding_buffers; /* number of tx holding buffer allocated */ + int get_tx_holding_index; /* next tx holding buffer for adapter to load */ + int put_tx_holding_index; /* next tx holding buffer to store user request */ + int tx_holding_count; /* number of tx holding buffers waiting */ + struct tx_holding_buffer tx_holding_buffers[MAX_TX_HOLDING_BUFFERS]; + + bool rx_enabled; + bool rx_overflow; + bool rx_rcc_underrun; + + bool tx_enabled; + bool tx_active; + u32 idle_mode; + + u16 cmr_value; + u16 tcsr_value; + + char device_name[25]; /* device instance name */ + + unsigned int bus_type; /* expansion bus type (ISA,EISA,PCI) */ + unsigned char bus; /* expansion bus number (zero based) */ + unsigned char function; /* PCI device number */ + + unsigned int io_base; /* base I/O address of adapter */ + unsigned int io_addr_size; /* size of the I/O address range */ + bool io_addr_requested; /* true if I/O address requested */ + + unsigned int irq_level; /* interrupt level */ + unsigned long irq_flags; + bool irq_requested; /* true if IRQ requested */ + + unsigned int dma_level; /* DMA channel */ + bool dma_requested; /* true if dma channel requested */ + + u16 mbre_bit; + u16 loopback_bits; + u16 usc_idle_mode; + + MGSL_PARAMS params; /* communications parameters */ + + unsigned char serial_signals; /* current serial signal states */ + + bool irq_occurred; /* for diagnostics use */ + unsigned int init_error; /* Initialization startup error (DIAGS) */ + int fDiagnosticsmode; /* Driver in Diagnostic mode? (DIAGS) */ + + u32 last_mem_alloc; + unsigned char* memory_base; /* shared memory address (PCI only) */ + u32 phys_memory_base; + bool shared_mem_requested; + + unsigned char* lcr_base; /* local config registers (PCI only) */ + u32 phys_lcr_base; + u32 lcr_offset; + bool lcr_mem_requested; + + u32 misc_ctrl_value; + char flag_buf[MAX_ASYNC_BUFFER_SIZE]; + char char_buf[MAX_ASYNC_BUFFER_SIZE]; + bool drop_rts_on_tx_done; + + bool loopmode_insert_requested; + bool loopmode_send_done_requested; + + struct _input_signal_events input_signal_events; + + /* generic HDLC device parts */ + int netcount; + spinlock_t netlock; + +#if SYNCLINK_GENERIC_HDLC + struct net_device *netdev; +#endif +}; + +#define MGSL_MAGIC 0x5401 + +/* + * The size of the serial xmit buffer is 1 page, or 4096 bytes + */ +#ifndef SERIAL_XMIT_SIZE +#define SERIAL_XMIT_SIZE 4096 +#endif + +/* + * These macros define the offsets used in calculating the + * I/O address of the specified USC registers. + */ + + +#define DCPIN 2 /* Bit 1 of I/O address */ +#define SDPIN 4 /* Bit 2 of I/O address */ + +#define DCAR 0 /* DMA command/address register */ +#define CCAR SDPIN /* channel command/address register */ +#define DATAREG DCPIN + SDPIN /* serial data register */ +#define MSBONLY 0x41 +#define LSBONLY 0x40 + +/* + * These macros define the register address (ordinal number) + * used for writing address/value pairs to the USC. + */ + +#define CMR 0x02 /* Channel mode Register */ +#define CCSR 0x04 /* Channel Command/status Register */ +#define CCR 0x06 /* Channel Control Register */ +#define PSR 0x08 /* Port status Register */ +#define PCR 0x0a /* Port Control Register */ +#define TMDR 0x0c /* Test mode Data Register */ +#define TMCR 0x0e /* Test mode Control Register */ +#define CMCR 0x10 /* Clock mode Control Register */ +#define HCR 0x12 /* Hardware Configuration Register */ +#define IVR 0x14 /* Interrupt Vector Register */ +#define IOCR 0x16 /* Input/Output Control Register */ +#define ICR 0x18 /* Interrupt Control Register */ +#define DCCR 0x1a /* Daisy Chain Control Register */ +#define MISR 0x1c /* Misc Interrupt status Register */ +#define SICR 0x1e /* status Interrupt Control Register */ +#define RDR 0x20 /* Receive Data Register */ +#define RMR 0x22 /* Receive mode Register */ +#define RCSR 0x24 /* Receive Command/status Register */ +#define RICR 0x26 /* Receive Interrupt Control Register */ +#define RSR 0x28 /* Receive Sync Register */ +#define RCLR 0x2a /* Receive count Limit Register */ +#define RCCR 0x2c /* Receive Character count Register */ +#define TC0R 0x2e /* Time Constant 0 Register */ +#define TDR 0x30 /* Transmit Data Register */ +#define TMR 0x32 /* Transmit mode Register */ +#define TCSR 0x34 /* Transmit Command/status Register */ +#define TICR 0x36 /* Transmit Interrupt Control Register */ +#define TSR 0x38 /* Transmit Sync Register */ +#define TCLR 0x3a /* Transmit count Limit Register */ +#define TCCR 0x3c /* Transmit Character count Register */ +#define TC1R 0x3e /* Time Constant 1 Register */ + + +/* + * MACRO DEFINITIONS FOR DMA REGISTERS + */ + +#define DCR 0x06 /* DMA Control Register (shared) */ +#define DACR 0x08 /* DMA Array count Register (shared) */ +#define BDCR 0x12 /* Burst/Dwell Control Register (shared) */ +#define DIVR 0x14 /* DMA Interrupt Vector Register (shared) */ +#define DICR 0x18 /* DMA Interrupt Control Register (shared) */ +#define CDIR 0x1a /* Clear DMA Interrupt Register (shared) */ +#define SDIR 0x1c /* Set DMA Interrupt Register (shared) */ + +#define TDMR 0x02 /* Transmit DMA mode Register */ +#define TDIAR 0x1e /* Transmit DMA Interrupt Arm Register */ +#define TBCR 0x2a /* Transmit Byte count Register */ +#define TARL 0x2c /* Transmit Address Register (low) */ +#define TARU 0x2e /* Transmit Address Register (high) */ +#define NTBCR 0x3a /* Next Transmit Byte count Register */ +#define NTARL 0x3c /* Next Transmit Address Register (low) */ +#define NTARU 0x3e /* Next Transmit Address Register (high) */ + +#define RDMR 0x82 /* Receive DMA mode Register (non-shared) */ +#define RDIAR 0x9e /* Receive DMA Interrupt Arm Register */ +#define RBCR 0xaa /* Receive Byte count Register */ +#define RARL 0xac /* Receive Address Register (low) */ +#define RARU 0xae /* Receive Address Register (high) */ +#define NRBCR 0xba /* Next Receive Byte count Register */ +#define NRARL 0xbc /* Next Receive Address Register (low) */ +#define NRARU 0xbe /* Next Receive Address Register (high) */ + + +/* + * MACRO DEFINITIONS FOR MODEM STATUS BITS + */ + +#define MODEMSTATUS_DTR 0x80 +#define MODEMSTATUS_DSR 0x40 +#define MODEMSTATUS_RTS 0x20 +#define MODEMSTATUS_CTS 0x10 +#define MODEMSTATUS_RI 0x04 +#define MODEMSTATUS_DCD 0x01 + + +/* + * Channel Command/Address Register (CCAR) Command Codes + */ + +#define RTCmd_Null 0x0000 +#define RTCmd_ResetHighestIus 0x1000 +#define RTCmd_TriggerChannelLoadDma 0x2000 +#define RTCmd_TriggerRxDma 0x2800 +#define RTCmd_TriggerTxDma 0x3000 +#define RTCmd_TriggerRxAndTxDma 0x3800 +#define RTCmd_PurgeRxFifo 0x4800 +#define RTCmd_PurgeTxFifo 0x5000 +#define RTCmd_PurgeRxAndTxFifo 0x5800 +#define RTCmd_LoadRcc 0x6800 +#define RTCmd_LoadTcc 0x7000 +#define RTCmd_LoadRccAndTcc 0x7800 +#define RTCmd_LoadTC0 0x8800 +#define RTCmd_LoadTC1 0x9000 +#define RTCmd_LoadTC0AndTC1 0x9800 +#define RTCmd_SerialDataLSBFirst 0xa000 +#define RTCmd_SerialDataMSBFirst 0xa800 +#define RTCmd_SelectBigEndian 0xb000 +#define RTCmd_SelectLittleEndian 0xb800 + + +/* + * DMA Command/Address Register (DCAR) Command Codes + */ + +#define DmaCmd_Null 0x0000 +#define DmaCmd_ResetTxChannel 0x1000 +#define DmaCmd_ResetRxChannel 0x1200 +#define DmaCmd_StartTxChannel 0x2000 +#define DmaCmd_StartRxChannel 0x2200 +#define DmaCmd_ContinueTxChannel 0x3000 +#define DmaCmd_ContinueRxChannel 0x3200 +#define DmaCmd_PauseTxChannel 0x4000 +#define DmaCmd_PauseRxChannel 0x4200 +#define DmaCmd_AbortTxChannel 0x5000 +#define DmaCmd_AbortRxChannel 0x5200 +#define DmaCmd_InitTxChannel 0x7000 +#define DmaCmd_InitRxChannel 0x7200 +#define DmaCmd_ResetHighestDmaIus 0x8000 +#define DmaCmd_ResetAllChannels 0x9000 +#define DmaCmd_StartAllChannels 0xa000 +#define DmaCmd_ContinueAllChannels 0xb000 +#define DmaCmd_PauseAllChannels 0xc000 +#define DmaCmd_AbortAllChannels 0xd000 +#define DmaCmd_InitAllChannels 0xf000 + +#define TCmd_Null 0x0000 +#define TCmd_ClearTxCRC 0x2000 +#define TCmd_SelectTicrTtsaData 0x4000 +#define TCmd_SelectTicrTxFifostatus 0x5000 +#define TCmd_SelectTicrIntLevel 0x6000 +#define TCmd_SelectTicrdma_level 0x7000 +#define TCmd_SendFrame 0x8000 +#define TCmd_SendAbort 0x9000 +#define TCmd_EnableDleInsertion 0xc000 +#define TCmd_DisableDleInsertion 0xd000 +#define TCmd_ClearEofEom 0xe000 +#define TCmd_SetEofEom 0xf000 + +#define RCmd_Null 0x0000 +#define RCmd_ClearRxCRC 0x2000 +#define RCmd_EnterHuntmode 0x3000 +#define RCmd_SelectRicrRtsaData 0x4000 +#define RCmd_SelectRicrRxFifostatus 0x5000 +#define RCmd_SelectRicrIntLevel 0x6000 +#define RCmd_SelectRicrdma_level 0x7000 + +/* + * Bits for enabling and disabling IRQs in Interrupt Control Register (ICR) + */ + +#define RECEIVE_STATUS BIT5 +#define RECEIVE_DATA BIT4 +#define TRANSMIT_STATUS BIT3 +#define TRANSMIT_DATA BIT2 +#define IO_PIN BIT1 +#define MISC BIT0 + + +/* + * Receive status Bits in Receive Command/status Register RCSR + */ + +#define RXSTATUS_SHORT_FRAME BIT8 +#define RXSTATUS_CODE_VIOLATION BIT8 +#define RXSTATUS_EXITED_HUNT BIT7 +#define RXSTATUS_IDLE_RECEIVED BIT6 +#define RXSTATUS_BREAK_RECEIVED BIT5 +#define RXSTATUS_ABORT_RECEIVED BIT5 +#define RXSTATUS_RXBOUND BIT4 +#define RXSTATUS_CRC_ERROR BIT3 +#define RXSTATUS_FRAMING_ERROR BIT3 +#define RXSTATUS_ABORT BIT2 +#define RXSTATUS_PARITY_ERROR BIT2 +#define RXSTATUS_OVERRUN BIT1 +#define RXSTATUS_DATA_AVAILABLE BIT0 +#define RXSTATUS_ALL 0x01f6 +#define usc_UnlatchRxstatusBits(a,b) usc_OutReg( (a), RCSR, (u16)((b) & RXSTATUS_ALL) ) + +/* + * Values for setting transmit idle mode in + * Transmit Control/status Register (TCSR) + */ +#define IDLEMODE_FLAGS 0x0000 +#define IDLEMODE_ALT_ONE_ZERO 0x0100 +#define IDLEMODE_ZERO 0x0200 +#define IDLEMODE_ONE 0x0300 +#define IDLEMODE_ALT_MARK_SPACE 0x0500 +#define IDLEMODE_SPACE 0x0600 +#define IDLEMODE_MARK 0x0700 +#define IDLEMODE_MASK 0x0700 + +/* + * IUSC revision identifiers + */ +#define IUSC_SL1660 0x4d44 +#define IUSC_PRE_SL1660 0x4553 + +/* + * Transmit status Bits in Transmit Command/status Register (TCSR) + */ + +#define TCSR_PRESERVE 0x0F00 + +#define TCSR_UNDERWAIT BIT11 +#define TXSTATUS_PREAMBLE_SENT BIT7 +#define TXSTATUS_IDLE_SENT BIT6 +#define TXSTATUS_ABORT_SENT BIT5 +#define TXSTATUS_EOF_SENT BIT4 +#define TXSTATUS_EOM_SENT BIT4 +#define TXSTATUS_CRC_SENT BIT3 +#define TXSTATUS_ALL_SENT BIT2 +#define TXSTATUS_UNDERRUN BIT1 +#define TXSTATUS_FIFO_EMPTY BIT0 +#define TXSTATUS_ALL 0x00fa +#define usc_UnlatchTxstatusBits(a,b) usc_OutReg( (a), TCSR, (u16)((a)->tcsr_value + ((b) & 0x00FF)) ) + + +#define MISCSTATUS_RXC_LATCHED BIT15 +#define MISCSTATUS_RXC BIT14 +#define MISCSTATUS_TXC_LATCHED BIT13 +#define MISCSTATUS_TXC BIT12 +#define MISCSTATUS_RI_LATCHED BIT11 +#define MISCSTATUS_RI BIT10 +#define MISCSTATUS_DSR_LATCHED BIT9 +#define MISCSTATUS_DSR BIT8 +#define MISCSTATUS_DCD_LATCHED BIT7 +#define MISCSTATUS_DCD BIT6 +#define MISCSTATUS_CTS_LATCHED BIT5 +#define MISCSTATUS_CTS BIT4 +#define MISCSTATUS_RCC_UNDERRUN BIT3 +#define MISCSTATUS_DPLL_NO_SYNC BIT2 +#define MISCSTATUS_BRG1_ZERO BIT1 +#define MISCSTATUS_BRG0_ZERO BIT0 + +#define usc_UnlatchIostatusBits(a,b) usc_OutReg((a),MISR,(u16)((b) & 0xaaa0)) +#define usc_UnlatchMiscstatusBits(a,b) usc_OutReg((a),MISR,(u16)((b) & 0x000f)) + +#define SICR_RXC_ACTIVE BIT15 +#define SICR_RXC_INACTIVE BIT14 +#define SICR_RXC (BIT15+BIT14) +#define SICR_TXC_ACTIVE BIT13 +#define SICR_TXC_INACTIVE BIT12 +#define SICR_TXC (BIT13+BIT12) +#define SICR_RI_ACTIVE BIT11 +#define SICR_RI_INACTIVE BIT10 +#define SICR_RI (BIT11+BIT10) +#define SICR_DSR_ACTIVE BIT9 +#define SICR_DSR_INACTIVE BIT8 +#define SICR_DSR (BIT9+BIT8) +#define SICR_DCD_ACTIVE BIT7 +#define SICR_DCD_INACTIVE BIT6 +#define SICR_DCD (BIT7+BIT6) +#define SICR_CTS_ACTIVE BIT5 +#define SICR_CTS_INACTIVE BIT4 +#define SICR_CTS (BIT5+BIT4) +#define SICR_RCC_UNDERFLOW BIT3 +#define SICR_DPLL_NO_SYNC BIT2 +#define SICR_BRG1_ZERO BIT1 +#define SICR_BRG0_ZERO BIT0 + +void usc_DisableMasterIrqBit( struct mgsl_struct *info ); +void usc_EnableMasterIrqBit( struct mgsl_struct *info ); +void usc_EnableInterrupts( struct mgsl_struct *info, u16 IrqMask ); +void usc_DisableInterrupts( struct mgsl_struct *info, u16 IrqMask ); +void usc_ClearIrqPendingBits( struct mgsl_struct *info, u16 IrqMask ); + +#define usc_EnableInterrupts( a, b ) \ + usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0xff00) + 0xc0 + (b)) ) + +#define usc_DisableInterrupts( a, b ) \ + usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0xff00) + 0x80 + (b)) ) + +#define usc_EnableMasterIrqBit(a) \ + usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0x0f00) + 0xb000) ) + +#define usc_DisableMasterIrqBit(a) \ + usc_OutReg( (a), ICR, (u16)(usc_InReg((a),ICR) & 0x7f00) ) + +#define usc_ClearIrqPendingBits( a, b ) usc_OutReg( (a), DCCR, 0x40 + (b) ) + +/* + * Transmit status Bits in Transmit Control status Register (TCSR) + * and Transmit Interrupt Control Register (TICR) (except BIT2, BIT0) + */ + +#define TXSTATUS_PREAMBLE_SENT BIT7 +#define TXSTATUS_IDLE_SENT BIT6 +#define TXSTATUS_ABORT_SENT BIT5 +#define TXSTATUS_EOF BIT4 +#define TXSTATUS_CRC_SENT BIT3 +#define TXSTATUS_ALL_SENT BIT2 +#define TXSTATUS_UNDERRUN BIT1 +#define TXSTATUS_FIFO_EMPTY BIT0 + +#define DICR_MASTER BIT15 +#define DICR_TRANSMIT BIT0 +#define DICR_RECEIVE BIT1 + +#define usc_EnableDmaInterrupts(a,b) \ + usc_OutDmaReg( (a), DICR, (u16)(usc_InDmaReg((a),DICR) | (b)) ) + +#define usc_DisableDmaInterrupts(a,b) \ + usc_OutDmaReg( (a), DICR, (u16)(usc_InDmaReg((a),DICR) & ~(b)) ) + +#define usc_EnableStatusIrqs(a,b) \ + usc_OutReg( (a), SICR, (u16)(usc_InReg((a),SICR) | (b)) ) + +#define usc_DisablestatusIrqs(a,b) \ + usc_OutReg( (a), SICR, (u16)(usc_InReg((a),SICR) & ~(b)) ) + +/* Transmit status Bits in Transmit Control status Register (TCSR) */ +/* and Transmit Interrupt Control Register (TICR) (except BIT2, BIT0) */ + + +#define DISABLE_UNCONDITIONAL 0 +#define DISABLE_END_OF_FRAME 1 +#define ENABLE_UNCONDITIONAL 2 +#define ENABLE_AUTO_CTS 3 +#define ENABLE_AUTO_DCD 3 +#define usc_EnableTransmitter(a,b) \ + usc_OutReg( (a), TMR, (u16)((usc_InReg((a),TMR) & 0xfffc) | (b)) ) +#define usc_EnableReceiver(a,b) \ + usc_OutReg( (a), RMR, (u16)((usc_InReg((a),RMR) & 0xfffc) | (b)) ) + +static u16 usc_InDmaReg( struct mgsl_struct *info, u16 Port ); +static void usc_OutDmaReg( struct mgsl_struct *info, u16 Port, u16 Value ); +static void usc_DmaCmd( struct mgsl_struct *info, u16 Cmd ); + +static u16 usc_InReg( struct mgsl_struct *info, u16 Port ); +static void usc_OutReg( struct mgsl_struct *info, u16 Port, u16 Value ); +static void usc_RTCmd( struct mgsl_struct *info, u16 Cmd ); +void usc_RCmd( struct mgsl_struct *info, u16 Cmd ); +void usc_TCmd( struct mgsl_struct *info, u16 Cmd ); + +#define usc_TCmd(a,b) usc_OutReg((a), TCSR, (u16)((a)->tcsr_value + (b))) +#define usc_RCmd(a,b) usc_OutReg((a), RCSR, (b)) + +#define usc_SetTransmitSyncChars(a,s0,s1) usc_OutReg((a), TSR, (u16)(((u16)s0<<8)|(u16)s1)) + +static void usc_process_rxoverrun_sync( struct mgsl_struct *info ); +static void usc_start_receiver( struct mgsl_struct *info ); +static void usc_stop_receiver( struct mgsl_struct *info ); + +static void usc_start_transmitter( struct mgsl_struct *info ); +static void usc_stop_transmitter( struct mgsl_struct *info ); +static void usc_set_txidle( struct mgsl_struct *info ); +static void usc_load_txfifo( struct mgsl_struct *info ); + +static void usc_enable_aux_clock( struct mgsl_struct *info, u32 DataRate ); +static void usc_enable_loopback( struct mgsl_struct *info, int enable ); + +static void usc_get_serial_signals( struct mgsl_struct *info ); +static void usc_set_serial_signals( struct mgsl_struct *info ); + +static void usc_reset( struct mgsl_struct *info ); + +static void usc_set_sync_mode( struct mgsl_struct *info ); +static void usc_set_sdlc_mode( struct mgsl_struct *info ); +static void usc_set_async_mode( struct mgsl_struct *info ); +static void usc_enable_async_clock( struct mgsl_struct *info, u32 DataRate ); + +static void usc_loopback_frame( struct mgsl_struct *info ); + +static void mgsl_tx_timeout(unsigned long context); + + +static void usc_loopmode_cancel_transmit( struct mgsl_struct * info ); +static void usc_loopmode_insert_request( struct mgsl_struct * info ); +static int usc_loopmode_active( struct mgsl_struct * info); +static void usc_loopmode_send_done( struct mgsl_struct * info ); + +static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigned long arg); + +#if SYNCLINK_GENERIC_HDLC +#define dev_to_port(D) (dev_to_hdlc(D)->priv) +static void hdlcdev_tx_done(struct mgsl_struct *info); +static void hdlcdev_rx(struct mgsl_struct *info, char *buf, int size); +static int hdlcdev_init(struct mgsl_struct *info); +static void hdlcdev_exit(struct mgsl_struct *info); +#endif + +/* + * Defines a BUS descriptor value for the PCI adapter + * local bus address ranges. + */ + +#define BUS_DESCRIPTOR( WrHold, WrDly, RdDly, Nwdd, Nwad, Nxda, Nrdd, Nrad ) \ +(0x00400020 + \ +((WrHold) << 30) + \ +((WrDly) << 28) + \ +((RdDly) << 26) + \ +((Nwdd) << 20) + \ +((Nwad) << 15) + \ +((Nxda) << 13) + \ +((Nrdd) << 11) + \ +((Nrad) << 6) ) + +static void mgsl_trace_block(struct mgsl_struct *info,const char* data, int count, int xmit); + +/* + * Adapter diagnostic routines + */ +static bool mgsl_register_test( struct mgsl_struct *info ); +static bool mgsl_irq_test( struct mgsl_struct *info ); +static bool mgsl_dma_test( struct mgsl_struct *info ); +static bool mgsl_memory_test( struct mgsl_struct *info ); +static int mgsl_adapter_test( struct mgsl_struct *info ); + +/* + * device and resource management routines + */ +static int mgsl_claim_resources(struct mgsl_struct *info); +static void mgsl_release_resources(struct mgsl_struct *info); +static void mgsl_add_device(struct mgsl_struct *info); +static struct mgsl_struct* mgsl_allocate_device(void); + +/* + * DMA buffer manupulation functions. + */ +static void mgsl_free_rx_frame_buffers( struct mgsl_struct *info, unsigned int StartIndex, unsigned int EndIndex ); +static bool mgsl_get_rx_frame( struct mgsl_struct *info ); +static bool mgsl_get_raw_rx_frame( struct mgsl_struct *info ); +static void mgsl_reset_rx_dma_buffers( struct mgsl_struct *info ); +static void mgsl_reset_tx_dma_buffers( struct mgsl_struct *info ); +static int num_free_tx_dma_buffers(struct mgsl_struct *info); +static void mgsl_load_tx_dma_buffer( struct mgsl_struct *info, const char *Buffer, unsigned int BufferSize); +static void mgsl_load_pci_memory(char* TargetPtr, const char* SourcePtr, unsigned short count); + +/* + * DMA and Shared Memory buffer allocation and formatting + */ +static int mgsl_allocate_dma_buffers(struct mgsl_struct *info); +static void mgsl_free_dma_buffers(struct mgsl_struct *info); +static int mgsl_alloc_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList,int Buffercount); +static void mgsl_free_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList,int Buffercount); +static int mgsl_alloc_buffer_list_memory(struct mgsl_struct *info); +static void mgsl_free_buffer_list_memory(struct mgsl_struct *info); +static int mgsl_alloc_intermediate_rxbuffer_memory(struct mgsl_struct *info); +static void mgsl_free_intermediate_rxbuffer_memory(struct mgsl_struct *info); +static int mgsl_alloc_intermediate_txbuffer_memory(struct mgsl_struct *info); +static void mgsl_free_intermediate_txbuffer_memory(struct mgsl_struct *info); +static bool load_next_tx_holding_buffer(struct mgsl_struct *info); +static int save_tx_buffer_request(struct mgsl_struct *info,const char *Buffer, unsigned int BufferSize); + +/* + * Bottom half interrupt handlers + */ +static void mgsl_bh_handler(struct work_struct *work); +static void mgsl_bh_receive(struct mgsl_struct *info); +static void mgsl_bh_transmit(struct mgsl_struct *info); +static void mgsl_bh_status(struct mgsl_struct *info); + +/* + * Interrupt handler routines and dispatch table. + */ +static void mgsl_isr_null( struct mgsl_struct *info ); +static void mgsl_isr_transmit_data( struct mgsl_struct *info ); +static void mgsl_isr_receive_data( struct mgsl_struct *info ); +static void mgsl_isr_receive_status( struct mgsl_struct *info ); +static void mgsl_isr_transmit_status( struct mgsl_struct *info ); +static void mgsl_isr_io_pin( struct mgsl_struct *info ); +static void mgsl_isr_misc( struct mgsl_struct *info ); +static void mgsl_isr_receive_dma( struct mgsl_struct *info ); +static void mgsl_isr_transmit_dma( struct mgsl_struct *info ); + +typedef void (*isr_dispatch_func)(struct mgsl_struct *); + +static isr_dispatch_func UscIsrTable[7] = +{ + mgsl_isr_null, + mgsl_isr_misc, + mgsl_isr_io_pin, + mgsl_isr_transmit_data, + mgsl_isr_transmit_status, + mgsl_isr_receive_data, + mgsl_isr_receive_status +}; + +/* + * ioctl call handlers + */ +static int tiocmget(struct tty_struct *tty); +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); +static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount + __user *user_icount); +static int mgsl_get_params(struct mgsl_struct * info, MGSL_PARAMS __user *user_params); +static int mgsl_set_params(struct mgsl_struct * info, MGSL_PARAMS __user *new_params); +static int mgsl_get_txidle(struct mgsl_struct * info, int __user *idle_mode); +static int mgsl_set_txidle(struct mgsl_struct * info, int idle_mode); +static int mgsl_txenable(struct mgsl_struct * info, int enable); +static int mgsl_txabort(struct mgsl_struct * info); +static int mgsl_rxenable(struct mgsl_struct * info, int enable); +static int mgsl_wait_event(struct mgsl_struct * info, int __user *mask); +static int mgsl_loopmode_send_done( struct mgsl_struct * info ); + +/* set non-zero on successful registration with PCI subsystem */ +static bool pci_registered; + +/* + * Global linked list of SyncLink devices + */ +static struct mgsl_struct *mgsl_device_list; +static int mgsl_device_count; + +/* + * Set this param to non-zero to load eax with the + * .text section address and breakpoint on module load. + * This is useful for use with gdb and add-symbol-file command. + */ +static int break_on_load; + +/* + * Driver major number, defaults to zero to get auto + * assigned major number. May be forced as module parameter. + */ +static int ttymajor; + +/* + * Array of user specified options for ISA adapters. + */ +static int io[MAX_ISA_DEVICES]; +static int irq[MAX_ISA_DEVICES]; +static int dma[MAX_ISA_DEVICES]; +static int debug_level; +static int maxframe[MAX_TOTAL_DEVICES]; +static int txdmabufs[MAX_TOTAL_DEVICES]; +static int txholdbufs[MAX_TOTAL_DEVICES]; + +module_param(break_on_load, bool, 0); +module_param(ttymajor, int, 0); +module_param_array(io, int, NULL, 0); +module_param_array(irq, int, NULL, 0); +module_param_array(dma, int, NULL, 0); +module_param(debug_level, int, 0); +module_param_array(maxframe, int, NULL, 0); +module_param_array(txdmabufs, int, NULL, 0); +module_param_array(txholdbufs, int, NULL, 0); + +static char *driver_name = "SyncLink serial driver"; +static char *driver_version = "$Revision: 4.38 $"; + +static int synclink_init_one (struct pci_dev *dev, + const struct pci_device_id *ent); +static void synclink_remove_one (struct pci_dev *dev); + +static struct pci_device_id synclink_pci_tbl[] = { + { PCI_VENDOR_ID_MICROGATE, PCI_DEVICE_ID_MICROGATE_USC, PCI_ANY_ID, PCI_ANY_ID, }, + { PCI_VENDOR_ID_MICROGATE, 0x0210, PCI_ANY_ID, PCI_ANY_ID, }, + { 0, }, /* terminate list */ +}; +MODULE_DEVICE_TABLE(pci, synclink_pci_tbl); + +MODULE_LICENSE("GPL"); + +static struct pci_driver synclink_pci_driver = { + .name = "synclink", + .id_table = synclink_pci_tbl, + .probe = synclink_init_one, + .remove = __devexit_p(synclink_remove_one), +}; + +static struct tty_driver *serial_driver; + +/* number of characters left in xmit buffer before we ask for more */ +#define WAKEUP_CHARS 256 + + +static void mgsl_change_params(struct mgsl_struct *info); +static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout); + +/* + * 1st function defined in .text section. Calling this function in + * init_module() followed by a breakpoint allows a remote debugger + * (gdb) to get the .text address for the add-symbol-file command. + * This allows remote debugging of dynamically loadable modules. + */ +static void* mgsl_get_text_ptr(void) +{ + return mgsl_get_text_ptr; +} + +static inline int mgsl_paranoia_check(struct mgsl_struct *info, + char *name, const char *routine) +{ +#ifdef MGSL_PARANOIA_CHECK + static const char *badmagic = + "Warning: bad magic number for mgsl struct (%s) in %s\n"; + static const char *badinfo = + "Warning: null mgsl_struct for (%s) in %s\n"; + + if (!info) { + printk(badinfo, name, routine); + return 1; + } + if (info->magic != MGSL_MAGIC) { + printk(badmagic, name, routine); + return 1; + } +#else + if (!info) + return 1; +#endif + return 0; +} + +/** + * line discipline callback wrappers + * + * The wrappers maintain line discipline references + * while calling into the line discipline. + * + * ldisc_receive_buf - pass receive data to line discipline + */ + +static void ldisc_receive_buf(struct tty_struct *tty, + const __u8 *data, char *flags, int count) +{ + struct tty_ldisc *ld; + if (!tty) + return; + ld = tty_ldisc_ref(tty); + if (ld) { + if (ld->ops->receive_buf) + ld->ops->receive_buf(tty, data, flags, count); + tty_ldisc_deref(ld); + } +} + +/* mgsl_stop() throttle (stop) transmitter + * + * Arguments: tty pointer to tty info structure + * Return Value: None + */ +static void mgsl_stop(struct tty_struct *tty) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (mgsl_paranoia_check(info, tty->name, "mgsl_stop")) + return; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("mgsl_stop(%s)\n",info->device_name); + + spin_lock_irqsave(&info->irq_spinlock,flags); + if (info->tx_enabled) + usc_stop_transmitter(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + +} /* end of mgsl_stop() */ + +/* mgsl_start() release (start) transmitter + * + * Arguments: tty pointer to tty info structure + * Return Value: None + */ +static void mgsl_start(struct tty_struct *tty) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (mgsl_paranoia_check(info, tty->name, "mgsl_start")) + return; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("mgsl_start(%s)\n",info->device_name); + + spin_lock_irqsave(&info->irq_spinlock,flags); + if (!info->tx_enabled) + usc_start_transmitter(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + +} /* end of mgsl_start() */ + +/* + * Bottom half work queue access functions + */ + +/* mgsl_bh_action() Return next bottom half action to perform. + * Return Value: BH action code or 0 if nothing to do. + */ +static int mgsl_bh_action(struct mgsl_struct *info) +{ + unsigned long flags; + int rc = 0; + + spin_lock_irqsave(&info->irq_spinlock,flags); + + if (info->pending_bh & BH_RECEIVE) { + info->pending_bh &= ~BH_RECEIVE; + rc = BH_RECEIVE; + } else if (info->pending_bh & BH_TRANSMIT) { + info->pending_bh &= ~BH_TRANSMIT; + rc = BH_TRANSMIT; + } else if (info->pending_bh & BH_STATUS) { + info->pending_bh &= ~BH_STATUS; + rc = BH_STATUS; + } + + if (!rc) { + /* Mark BH routine as complete */ + info->bh_running = false; + info->bh_requested = false; + } + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + return rc; +} + +/* + * Perform bottom half processing of work items queued by ISR. + */ +static void mgsl_bh_handler(struct work_struct *work) +{ + struct mgsl_struct *info = + container_of(work, struct mgsl_struct, task); + int action; + + if (!info) + return; + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):mgsl_bh_handler(%s) entry\n", + __FILE__,__LINE__,info->device_name); + + info->bh_running = true; + + while((action = mgsl_bh_action(info)) != 0) { + + /* Process work item */ + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):mgsl_bh_handler() work item action=%d\n", + __FILE__,__LINE__,action); + + switch (action) { + + case BH_RECEIVE: + mgsl_bh_receive(info); + break; + case BH_TRANSMIT: + mgsl_bh_transmit(info); + break; + case BH_STATUS: + mgsl_bh_status(info); + break; + default: + /* unknown work item ID */ + printk("Unknown work item ID=%08X!\n", action); + break; + } + } + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):mgsl_bh_handler(%s) exit\n", + __FILE__,__LINE__,info->device_name); +} + +static void mgsl_bh_receive(struct mgsl_struct *info) +{ + bool (*get_rx_frame)(struct mgsl_struct *info) = + (info->params.mode == MGSL_MODE_HDLC ? mgsl_get_rx_frame : mgsl_get_raw_rx_frame); + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):mgsl_bh_receive(%s)\n", + __FILE__,__LINE__,info->device_name); + + do + { + if (info->rx_rcc_underrun) { + unsigned long flags; + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_start_receiver(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + return; + } + } while(get_rx_frame(info)); +} + +static void mgsl_bh_transmit(struct mgsl_struct *info) +{ + struct tty_struct *tty = info->port.tty; + unsigned long flags; + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):mgsl_bh_transmit() entry on %s\n", + __FILE__,__LINE__,info->device_name); + + if (tty) + tty_wakeup(tty); + + /* if transmitter idle and loopmode_send_done_requested + * then start echoing RxD to TxD + */ + spin_lock_irqsave(&info->irq_spinlock,flags); + if ( !info->tx_active && info->loopmode_send_done_requested ) + usc_loopmode_send_done( info ); + spin_unlock_irqrestore(&info->irq_spinlock,flags); +} + +static void mgsl_bh_status(struct mgsl_struct *info) +{ + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):mgsl_bh_status() entry on %s\n", + __FILE__,__LINE__,info->device_name); + + info->ri_chkcount = 0; + info->dsr_chkcount = 0; + info->dcd_chkcount = 0; + info->cts_chkcount = 0; +} + +/* mgsl_isr_receive_status() + * + * Service a receive status interrupt. The type of status + * interrupt is indicated by the state of the RCSR. + * This is only used for HDLC mode. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_isr_receive_status( struct mgsl_struct *info ) +{ + u16 status = usc_InReg( info, RCSR ); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_receive_status status=%04X\n", + __FILE__,__LINE__,status); + + if ( (status & RXSTATUS_ABORT_RECEIVED) && + info->loopmode_insert_requested && + usc_loopmode_active(info) ) + { + ++info->icount.rxabort; + info->loopmode_insert_requested = false; + + /* clear CMR:13 to start echoing RxD to TxD */ + info->cmr_value &= ~BIT13; + usc_OutReg(info, CMR, info->cmr_value); + + /* disable received abort irq (no longer required) */ + usc_OutReg(info, RICR, + (usc_InReg(info, RICR) & ~RXSTATUS_ABORT_RECEIVED)); + } + + if (status & (RXSTATUS_EXITED_HUNT + RXSTATUS_IDLE_RECEIVED)) { + if (status & RXSTATUS_EXITED_HUNT) + info->icount.exithunt++; + if (status & RXSTATUS_IDLE_RECEIVED) + info->icount.rxidle++; + wake_up_interruptible(&info->event_wait_q); + } + + if (status & RXSTATUS_OVERRUN){ + info->icount.rxover++; + usc_process_rxoverrun_sync( info ); + } + + usc_ClearIrqPendingBits( info, RECEIVE_STATUS ); + usc_UnlatchRxstatusBits( info, status ); + +} /* end of mgsl_isr_receive_status() */ + +/* mgsl_isr_transmit_status() + * + * Service a transmit status interrupt + * HDLC mode :end of transmit frame + * Async mode:all data is sent + * transmit status is indicated by bits in the TCSR. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_isr_transmit_status( struct mgsl_struct *info ) +{ + u16 status = usc_InReg( info, TCSR ); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_transmit_status status=%04X\n", + __FILE__,__LINE__,status); + + usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); + usc_UnlatchTxstatusBits( info, status ); + + if ( status & (TXSTATUS_UNDERRUN | TXSTATUS_ABORT_SENT) ) + { + /* finished sending HDLC abort. This may leave */ + /* the TxFifo with data from the aborted frame */ + /* so purge the TxFifo. Also shutdown the DMA */ + /* channel in case there is data remaining in */ + /* the DMA buffer */ + usc_DmaCmd( info, DmaCmd_ResetTxChannel ); + usc_RTCmd( info, RTCmd_PurgeTxFifo ); + } + + if ( status & TXSTATUS_EOF_SENT ) + info->icount.txok++; + else if ( status & TXSTATUS_UNDERRUN ) + info->icount.txunder++; + else if ( status & TXSTATUS_ABORT_SENT ) + info->icount.txabort++; + else + info->icount.txunder++; + + info->tx_active = false; + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + del_timer(&info->tx_timer); + + if ( info->drop_rts_on_tx_done ) { + usc_get_serial_signals( info ); + if ( info->serial_signals & SerialSignal_RTS ) { + info->serial_signals &= ~SerialSignal_RTS; + usc_set_serial_signals( info ); + } + info->drop_rts_on_tx_done = false; + } + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_tx_done(info); + else +#endif + { + if (info->port.tty->stopped || info->port.tty->hw_stopped) { + usc_stop_transmitter(info); + return; + } + info->pending_bh |= BH_TRANSMIT; + } + +} /* end of mgsl_isr_transmit_status() */ + +/* mgsl_isr_io_pin() + * + * Service an Input/Output pin interrupt. The type of + * interrupt is indicated by bits in the MISR + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_isr_io_pin( struct mgsl_struct *info ) +{ + struct mgsl_icount *icount; + u16 status = usc_InReg( info, MISR ); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_io_pin status=%04X\n", + __FILE__,__LINE__,status); + + usc_ClearIrqPendingBits( info, IO_PIN ); + usc_UnlatchIostatusBits( info, status ); + + if (status & (MISCSTATUS_CTS_LATCHED | MISCSTATUS_DCD_LATCHED | + MISCSTATUS_DSR_LATCHED | MISCSTATUS_RI_LATCHED) ) { + icount = &info->icount; + /* update input line counters */ + if (status & MISCSTATUS_RI_LATCHED) { + if ((info->ri_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) + usc_DisablestatusIrqs(info,SICR_RI); + icount->rng++; + if ( status & MISCSTATUS_RI ) + info->input_signal_events.ri_up++; + else + info->input_signal_events.ri_down++; + } + if (status & MISCSTATUS_DSR_LATCHED) { + if ((info->dsr_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) + usc_DisablestatusIrqs(info,SICR_DSR); + icount->dsr++; + if ( status & MISCSTATUS_DSR ) + info->input_signal_events.dsr_up++; + else + info->input_signal_events.dsr_down++; + } + if (status & MISCSTATUS_DCD_LATCHED) { + if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) + usc_DisablestatusIrqs(info,SICR_DCD); + icount->dcd++; + if (status & MISCSTATUS_DCD) { + info->input_signal_events.dcd_up++; + } else + info->input_signal_events.dcd_down++; +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) { + if (status & MISCSTATUS_DCD) + netif_carrier_on(info->netdev); + else + netif_carrier_off(info->netdev); + } +#endif + } + if (status & MISCSTATUS_CTS_LATCHED) + { + if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) + usc_DisablestatusIrqs(info,SICR_CTS); + icount->cts++; + if ( status & MISCSTATUS_CTS ) + info->input_signal_events.cts_up++; + else + info->input_signal_events.cts_down++; + } + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + + if ( (info->port.flags & ASYNC_CHECK_CD) && + (status & MISCSTATUS_DCD_LATCHED) ) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s CD now %s...", info->device_name, + (status & MISCSTATUS_DCD) ? "on" : "off"); + if (status & MISCSTATUS_DCD) + wake_up_interruptible(&info->port.open_wait); + else { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("doing serial hangup..."); + if (info->port.tty) + tty_hangup(info->port.tty); + } + } + + if ( (info->port.flags & ASYNC_CTS_FLOW) && + (status & MISCSTATUS_CTS_LATCHED) ) { + if (info->port.tty->hw_stopped) { + if (status & MISCSTATUS_CTS) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("CTS tx start..."); + if (info->port.tty) + info->port.tty->hw_stopped = 0; + usc_start_transmitter(info); + info->pending_bh |= BH_TRANSMIT; + return; + } + } else { + if (!(status & MISCSTATUS_CTS)) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("CTS tx stop..."); + if (info->port.tty) + info->port.tty->hw_stopped = 1; + usc_stop_transmitter(info); + } + } + } + } + + info->pending_bh |= BH_STATUS; + + /* for diagnostics set IRQ flag */ + if ( status & MISCSTATUS_TXC_LATCHED ){ + usc_OutReg( info, SICR, + (unsigned short)(usc_InReg(info,SICR) & ~(SICR_TXC_ACTIVE+SICR_TXC_INACTIVE)) ); + usc_UnlatchIostatusBits( info, MISCSTATUS_TXC_LATCHED ); + info->irq_occurred = true; + } + +} /* end of mgsl_isr_io_pin() */ + +/* mgsl_isr_transmit_data() + * + * Service a transmit data interrupt (async mode only). + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_isr_transmit_data( struct mgsl_struct *info ) +{ + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_transmit_data xmit_cnt=%d\n", + __FILE__,__LINE__,info->xmit_cnt); + + usc_ClearIrqPendingBits( info, TRANSMIT_DATA ); + + if (info->port.tty->stopped || info->port.tty->hw_stopped) { + usc_stop_transmitter(info); + return; + } + + if ( info->xmit_cnt ) + usc_load_txfifo( info ); + else + info->tx_active = false; + + if (info->xmit_cnt < WAKEUP_CHARS) + info->pending_bh |= BH_TRANSMIT; + +} /* end of mgsl_isr_transmit_data() */ + +/* mgsl_isr_receive_data() + * + * Service a receive data interrupt. This occurs + * when operating in asynchronous interrupt transfer mode. + * The receive data FIFO is flushed to the receive data buffers. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_isr_receive_data( struct mgsl_struct *info ) +{ + int Fifocount; + u16 status; + int work = 0; + unsigned char DataByte; + struct tty_struct *tty = info->port.tty; + struct mgsl_icount *icount = &info->icount; + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_receive_data\n", + __FILE__,__LINE__); + + usc_ClearIrqPendingBits( info, RECEIVE_DATA ); + + /* select FIFO status for RICR readback */ + usc_RCmd( info, RCmd_SelectRicrRxFifostatus ); + + /* clear the Wordstatus bit so that status readback */ + /* only reflects the status of this byte */ + usc_OutReg( info, RICR+LSBONLY, (u16)(usc_InReg(info, RICR+LSBONLY) & ~BIT3 )); + + /* flush the receive FIFO */ + + while( (Fifocount = (usc_InReg(info,RICR) >> 8)) ) { + int flag; + + /* read one byte from RxFIFO */ + outw( (inw(info->io_base + CCAR) & 0x0780) | (RDR+LSBONLY), + info->io_base + CCAR ); + DataByte = inb( info->io_base + CCAR ); + + /* get the status of the received byte */ + status = usc_InReg(info, RCSR); + if ( status & (RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR + + RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) ) + usc_UnlatchRxstatusBits(info,RXSTATUS_ALL); + + icount->rx++; + + flag = 0; + if ( status & (RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR + + RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) ) { + printk("rxerr=%04X\n",status); + /* update error statistics */ + if ( status & RXSTATUS_BREAK_RECEIVED ) { + status &= ~(RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR); + icount->brk++; + } else if (status & RXSTATUS_PARITY_ERROR) + icount->parity++; + else if (status & RXSTATUS_FRAMING_ERROR) + icount->frame++; + else if (status & RXSTATUS_OVERRUN) { + /* must issue purge fifo cmd before */ + /* 16C32 accepts more receive chars */ + usc_RTCmd(info,RTCmd_PurgeRxFifo); + icount->overrun++; + } + + /* discard char if tty control flags say so */ + if (status & info->ignore_status_mask) + continue; + + status &= info->read_status_mask; + + if (status & RXSTATUS_BREAK_RECEIVED) { + flag = TTY_BREAK; + if (info->port.flags & ASYNC_SAK) + do_SAK(tty); + } else if (status & RXSTATUS_PARITY_ERROR) + flag = TTY_PARITY; + else if (status & RXSTATUS_FRAMING_ERROR) + flag = TTY_FRAME; + } /* end of if (error) */ + tty_insert_flip_char(tty, DataByte, flag); + if (status & RXSTATUS_OVERRUN) { + /* Overrun is special, since it's + * reported immediately, and doesn't + * affect the current character + */ + work += tty_insert_flip_char(tty, 0, TTY_OVERRUN); + } + } + + if ( debug_level >= DEBUG_LEVEL_ISR ) { + printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n", + __FILE__,__LINE__,icount->rx,icount->brk, + icount->parity,icount->frame,icount->overrun); + } + + if(work) + tty_flip_buffer_push(tty); +} + +/* mgsl_isr_misc() + * + * Service a miscellaneous interrupt source. + * + * Arguments: info pointer to device extension (instance data) + * Return Value: None + */ +static void mgsl_isr_misc( struct mgsl_struct *info ) +{ + u16 status = usc_InReg( info, MISR ); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_misc status=%04X\n", + __FILE__,__LINE__,status); + + if ((status & MISCSTATUS_RCC_UNDERRUN) && + (info->params.mode == MGSL_MODE_HDLC)) { + + /* turn off receiver and rx DMA */ + usc_EnableReceiver(info,DISABLE_UNCONDITIONAL); + usc_DmaCmd(info, DmaCmd_ResetRxChannel); + usc_UnlatchRxstatusBits(info, RXSTATUS_ALL); + usc_ClearIrqPendingBits(info, RECEIVE_DATA + RECEIVE_STATUS); + usc_DisableInterrupts(info, RECEIVE_DATA + RECEIVE_STATUS); + + /* schedule BH handler to restart receiver */ + info->pending_bh |= BH_RECEIVE; + info->rx_rcc_underrun = true; + } + + usc_ClearIrqPendingBits( info, MISC ); + usc_UnlatchMiscstatusBits( info, status ); + +} /* end of mgsl_isr_misc() */ + +/* mgsl_isr_null() + * + * Services undefined interrupt vectors from the + * USC. (hence this function SHOULD never be called) + * + * Arguments: info pointer to device extension (instance data) + * Return Value: None + */ +static void mgsl_isr_null( struct mgsl_struct *info ) +{ + +} /* end of mgsl_isr_null() */ + +/* mgsl_isr_receive_dma() + * + * Service a receive DMA channel interrupt. + * For this driver there are two sources of receive DMA interrupts + * as identified in the Receive DMA mode Register (RDMR): + * + * BIT3 EOA/EOL End of List, all receive buffers in receive + * buffer list have been filled (no more free buffers + * available). The DMA controller has shut down. + * + * BIT2 EOB End of Buffer. This interrupt occurs when a receive + * DMA buffer is terminated in response to completion + * of a good frame or a frame with errors. The status + * of the frame is stored in the buffer entry in the + * list of receive buffer entries. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_isr_receive_dma( struct mgsl_struct *info ) +{ + u16 status; + + /* clear interrupt pending and IUS bit for Rx DMA IRQ */ + usc_OutDmaReg( info, CDIR, BIT9+BIT1 ); + + /* Read the receive DMA status to identify interrupt type. */ + /* This also clears the status bits. */ + status = usc_InDmaReg( info, RDMR ); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_receive_dma(%s) status=%04X\n", + __FILE__,__LINE__,info->device_name,status); + + info->pending_bh |= BH_RECEIVE; + + if ( status & BIT3 ) { + info->rx_overflow = true; + info->icount.buf_overrun++; + } + +} /* end of mgsl_isr_receive_dma() */ + +/* mgsl_isr_transmit_dma() + * + * This function services a transmit DMA channel interrupt. + * + * For this driver there is one source of transmit DMA interrupts + * as identified in the Transmit DMA Mode Register (TDMR): + * + * BIT2 EOB End of Buffer. This interrupt occurs when a + * transmit DMA buffer has been emptied. + * + * The driver maintains enough transmit DMA buffers to hold at least + * one max frame size transmit frame. When operating in a buffered + * transmit mode, there may be enough transmit DMA buffers to hold at + * least two or more max frame size frames. On an EOB condition, + * determine if there are any queued transmit buffers and copy into + * transmit DMA buffers if we have room. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_isr_transmit_dma( struct mgsl_struct *info ) +{ + u16 status; + + /* clear interrupt pending and IUS bit for Tx DMA IRQ */ + usc_OutDmaReg(info, CDIR, BIT8+BIT0 ); + + /* Read the transmit DMA status to identify interrupt type. */ + /* This also clears the status bits. */ + + status = usc_InDmaReg( info, TDMR ); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):mgsl_isr_transmit_dma(%s) status=%04X\n", + __FILE__,__LINE__,info->device_name,status); + + if ( status & BIT2 ) { + --info->tx_dma_buffers_used; + + /* if there are transmit frames queued, + * try to load the next one + */ + if ( load_next_tx_holding_buffer(info) ) { + /* if call returns non-zero value, we have + * at least one free tx holding buffer + */ + info->pending_bh |= BH_TRANSMIT; + } + } + +} /* end of mgsl_isr_transmit_dma() */ + +/* mgsl_interrupt() + * + * Interrupt service routine entry point. + * + * Arguments: + * + * irq interrupt number that caused interrupt + * dev_id device ID supplied during interrupt registration + * + * Return Value: None + */ +static irqreturn_t mgsl_interrupt(int dummy, void *dev_id) +{ + struct mgsl_struct *info = dev_id; + u16 UscVector; + u16 DmaVector; + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk(KERN_DEBUG "%s(%d):mgsl_interrupt(%d)entry.\n", + __FILE__, __LINE__, info->irq_level); + + spin_lock(&info->irq_spinlock); + + for(;;) { + /* Read the interrupt vectors from hardware. */ + UscVector = usc_InReg(info, IVR) >> 9; + DmaVector = usc_InDmaReg(info, DIVR); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s UscVector=%08X DmaVector=%08X\n", + __FILE__,__LINE__,info->device_name,UscVector,DmaVector); + + if ( !UscVector && !DmaVector ) + break; + + /* Dispatch interrupt vector */ + if ( UscVector ) + (*UscIsrTable[UscVector])(info); + else if ( (DmaVector&(BIT10|BIT9)) == BIT10) + mgsl_isr_transmit_dma(info); + else + mgsl_isr_receive_dma(info); + + if ( info->isr_overflow ) { + printk(KERN_ERR "%s(%d):%s isr overflow irq=%d\n", + __FILE__, __LINE__, info->device_name, info->irq_level); + usc_DisableMasterIrqBit(info); + usc_DisableDmaInterrupts(info,DICR_MASTER); + break; + } + } + + /* Request bottom half processing if there's something + * for it to do and the bh is not already running + */ + + if ( info->pending_bh && !info->bh_running && !info->bh_requested ) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s queueing bh task.\n", + __FILE__,__LINE__,info->device_name); + schedule_work(&info->task); + info->bh_requested = true; + } + + spin_unlock(&info->irq_spinlock); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk(KERN_DEBUG "%s(%d):mgsl_interrupt(%d)exit.\n", + __FILE__, __LINE__, info->irq_level); + + return IRQ_HANDLED; +} /* end of mgsl_interrupt() */ + +/* startup() + * + * Initialize and start device. + * + * Arguments: info pointer to device instance data + * Return Value: 0 if success, otherwise error code + */ +static int startup(struct mgsl_struct * info) +{ + int retval = 0; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("%s(%d):mgsl_startup(%s)\n",__FILE__,__LINE__,info->device_name); + + if (info->port.flags & ASYNC_INITIALIZED) + return 0; + + if (!info->xmit_buf) { + /* allocate a page of memory for a transmit buffer */ + info->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); + if (!info->xmit_buf) { + printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n", + __FILE__,__LINE__,info->device_name); + return -ENOMEM; + } + } + + info->pending_bh = 0; + + memset(&info->icount, 0, sizeof(info->icount)); + + setup_timer(&info->tx_timer, mgsl_tx_timeout, (unsigned long)info); + + /* Allocate and claim adapter resources */ + retval = mgsl_claim_resources(info); + + /* perform existence check and diagnostics */ + if ( !retval ) + retval = mgsl_adapter_test(info); + + if ( retval ) { + if (capable(CAP_SYS_ADMIN) && info->port.tty) + set_bit(TTY_IO_ERROR, &info->port.tty->flags); + mgsl_release_resources(info); + return retval; + } + + /* program hardware for current parameters */ + mgsl_change_params(info); + + if (info->port.tty) + clear_bit(TTY_IO_ERROR, &info->port.tty->flags); + + info->port.flags |= ASYNC_INITIALIZED; + + return 0; + +} /* end of startup() */ + +/* shutdown() + * + * Called by mgsl_close() and mgsl_hangup() to shutdown hardware + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void shutdown(struct mgsl_struct * info) +{ + unsigned long flags; + + if (!(info->port.flags & ASYNC_INITIALIZED)) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_shutdown(%s)\n", + __FILE__,__LINE__, info->device_name ); + + /* clear status wait queue because status changes */ + /* can't happen after shutting down the hardware */ + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + + del_timer_sync(&info->tx_timer); + + if (info->xmit_buf) { + free_page((unsigned long) info->xmit_buf); + info->xmit_buf = NULL; + } + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_DisableMasterIrqBit(info); + usc_stop_receiver(info); + usc_stop_transmitter(info); + usc_DisableInterrupts(info,RECEIVE_DATA + RECEIVE_STATUS + + TRANSMIT_DATA + TRANSMIT_STATUS + IO_PIN + MISC ); + usc_DisableDmaInterrupts(info,DICR_MASTER + DICR_TRANSMIT + DICR_RECEIVE); + + /* Disable DMAEN (Port 7, Bit 14) */ + /* This disconnects the DMA request signal from the ISA bus */ + /* on the ISA adapter. This has no effect for the PCI adapter */ + usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT15) | BIT14)); + + /* Disable INTEN (Port 6, Bit12) */ + /* This disconnects the IRQ request signal to the ISA bus */ + /* on the ISA adapter. This has no effect for the PCI adapter */ + usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) | BIT12)); + + if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) { + info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); + usc_set_serial_signals(info); + } + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + mgsl_release_resources(info); + + if (info->port.tty) + set_bit(TTY_IO_ERROR, &info->port.tty->flags); + + info->port.flags &= ~ASYNC_INITIALIZED; + +} /* end of shutdown() */ + +static void mgsl_program_hw(struct mgsl_struct *info) +{ + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + + usc_stop_receiver(info); + usc_stop_transmitter(info); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + + if (info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW || + info->netcount) + usc_set_sync_mode(info); + else + usc_set_async_mode(info); + + usc_set_serial_signals(info); + + info->dcd_chkcount = 0; + info->cts_chkcount = 0; + info->ri_chkcount = 0; + info->dsr_chkcount = 0; + + usc_EnableStatusIrqs(info,SICR_CTS+SICR_DSR+SICR_DCD+SICR_RI); + usc_EnableInterrupts(info, IO_PIN); + usc_get_serial_signals(info); + + if (info->netcount || info->port.tty->termios->c_cflag & CREAD) + usc_start_receiver(info); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); +} + +/* Reconfigure adapter based on new parameters + */ +static void mgsl_change_params(struct mgsl_struct *info) +{ + unsigned cflag; + int bits_per_char; + + if (!info->port.tty || !info->port.tty->termios) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_change_params(%s)\n", + __FILE__,__LINE__, info->device_name ); + + cflag = info->port.tty->termios->c_cflag; + + /* if B0 rate (hangup) specified then negate DTR and RTS */ + /* otherwise assert DTR and RTS */ + if (cflag & CBAUD) + info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; + else + info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + + /* byte size and parity */ + + switch (cflag & CSIZE) { + case CS5: info->params.data_bits = 5; break; + case CS6: info->params.data_bits = 6; break; + case CS7: info->params.data_bits = 7; break; + case CS8: info->params.data_bits = 8; break; + /* Never happens, but GCC is too dumb to figure it out */ + default: info->params.data_bits = 7; break; + } + + if (cflag & CSTOPB) + info->params.stop_bits = 2; + else + info->params.stop_bits = 1; + + info->params.parity = ASYNC_PARITY_NONE; + if (cflag & PARENB) { + if (cflag & PARODD) + info->params.parity = ASYNC_PARITY_ODD; + else + info->params.parity = ASYNC_PARITY_EVEN; +#ifdef CMSPAR + if (cflag & CMSPAR) + info->params.parity = ASYNC_PARITY_SPACE; +#endif + } + + /* calculate number of jiffies to transmit a full + * FIFO (32 bytes) at specified data rate + */ + bits_per_char = info->params.data_bits + + info->params.stop_bits + 1; + + /* if port data rate is set to 460800 or less then + * allow tty settings to override, otherwise keep the + * current data rate. + */ + if (info->params.data_rate <= 460800) + info->params.data_rate = tty_get_baud_rate(info->port.tty); + + if ( info->params.data_rate ) { + info->timeout = (32*HZ*bits_per_char) / + info->params.data_rate; + } + info->timeout += HZ/50; /* Add .02 seconds of slop */ + + if (cflag & CRTSCTS) + info->port.flags |= ASYNC_CTS_FLOW; + else + info->port.flags &= ~ASYNC_CTS_FLOW; + + if (cflag & CLOCAL) + info->port.flags &= ~ASYNC_CHECK_CD; + else + info->port.flags |= ASYNC_CHECK_CD; + + /* process tty input control flags */ + + info->read_status_mask = RXSTATUS_OVERRUN; + if (I_INPCK(info->port.tty)) + info->read_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR; + if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) + info->read_status_mask |= RXSTATUS_BREAK_RECEIVED; + + if (I_IGNPAR(info->port.tty)) + info->ignore_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR; + if (I_IGNBRK(info->port.tty)) { + info->ignore_status_mask |= RXSTATUS_BREAK_RECEIVED; + /* If ignoring parity and break indicators, ignore + * overruns too. (For real raw support). + */ + if (I_IGNPAR(info->port.tty)) + info->ignore_status_mask |= RXSTATUS_OVERRUN; + } + + mgsl_program_hw(info); + +} /* end of mgsl_change_params() */ + +/* mgsl_put_char() + * + * Add a character to the transmit buffer. + * + * Arguments: tty pointer to tty information structure + * ch character to add to transmit buffer + * + * Return Value: None + */ +static int mgsl_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + int ret = 0; + + if (debug_level >= DEBUG_LEVEL_INFO) { + printk(KERN_DEBUG "%s(%d):mgsl_put_char(%d) on %s\n", + __FILE__, __LINE__, ch, info->device_name); + } + + if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char")) + return 0; + + if (!info->xmit_buf) + return 0; + + spin_lock_irqsave(&info->irq_spinlock, flags); + + if ((info->params.mode == MGSL_MODE_ASYNC ) || !info->tx_active) { + if (info->xmit_cnt < SERIAL_XMIT_SIZE - 1) { + info->xmit_buf[info->xmit_head++] = ch; + info->xmit_head &= SERIAL_XMIT_SIZE-1; + info->xmit_cnt++; + ret = 1; + } + } + spin_unlock_irqrestore(&info->irq_spinlock, flags); + return ret; + +} /* end of mgsl_put_char() */ + +/* mgsl_flush_chars() + * + * Enable transmitter so remaining characters in the + * transmit buffer are sent. + * + * Arguments: tty pointer to tty information structure + * Return Value: None + */ +static void mgsl_flush_chars(struct tty_struct *tty) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_flush_chars() entry on %s xmit_cnt=%d\n", + __FILE__,__LINE__,info->device_name,info->xmit_cnt); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_flush_chars")) + return; + + if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || + !info->xmit_buf) + return; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_flush_chars() entry on %s starting transmitter\n", + __FILE__,__LINE__,info->device_name ); + + spin_lock_irqsave(&info->irq_spinlock,flags); + + if (!info->tx_active) { + if ( (info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW) && info->xmit_cnt ) { + /* operating in synchronous (frame oriented) mode */ + /* copy data from circular xmit_buf to */ + /* transmit DMA buffer. */ + mgsl_load_tx_dma_buffer(info, + info->xmit_buf,info->xmit_cnt); + } + usc_start_transmitter(info); + } + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + +} /* end of mgsl_flush_chars() */ + +/* mgsl_write() + * + * Send a block of data + * + * Arguments: + * + * tty pointer to tty information structure + * buf pointer to buffer containing send data + * count size of send data in bytes + * + * Return Value: number of characters written + */ +static int mgsl_write(struct tty_struct * tty, + const unsigned char *buf, int count) +{ + int c, ret = 0; + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_write(%s) count=%d\n", + __FILE__,__LINE__,info->device_name,count); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_write")) + goto cleanup; + + if (!info->xmit_buf) + goto cleanup; + + if ( info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW ) { + /* operating in synchronous (frame oriented) mode */ + /* operating in synchronous (frame oriented) mode */ + if (info->tx_active) { + + if ( info->params.mode == MGSL_MODE_HDLC ) { + ret = 0; + goto cleanup; + } + /* transmitter is actively sending data - + * if we have multiple transmit dma and + * holding buffers, attempt to queue this + * frame for transmission at a later time. + */ + if (info->tx_holding_count >= info->num_tx_holding_buffers ) { + /* no tx holding buffers available */ + ret = 0; + goto cleanup; + } + + /* queue transmit frame request */ + ret = count; + save_tx_buffer_request(info,buf,count); + + /* if we have sufficient tx dma buffers, + * load the next buffered tx request + */ + spin_lock_irqsave(&info->irq_spinlock,flags); + load_next_tx_holding_buffer(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + goto cleanup; + } + + /* if operating in HDLC LoopMode and the adapter */ + /* has yet to be inserted into the loop, we can't */ + /* transmit */ + + if ( (info->params.flags & HDLC_FLAG_HDLC_LOOPMODE) && + !usc_loopmode_active(info) ) + { + ret = 0; + goto cleanup; + } + + if ( info->xmit_cnt ) { + /* Send accumulated from send_char() calls */ + /* as frame and wait before accepting more data. */ + ret = 0; + + /* copy data from circular xmit_buf to */ + /* transmit DMA buffer. */ + mgsl_load_tx_dma_buffer(info, + info->xmit_buf,info->xmit_cnt); + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_write(%s) sync xmit_cnt flushing\n", + __FILE__,__LINE__,info->device_name); + } else { + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_write(%s) sync transmit accepted\n", + __FILE__,__LINE__,info->device_name); + ret = count; + info->xmit_cnt = count; + mgsl_load_tx_dma_buffer(info,buf,count); + } + } else { + while (1) { + spin_lock_irqsave(&info->irq_spinlock,flags); + c = min_t(int, count, + min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, + SERIAL_XMIT_SIZE - info->xmit_head)); + if (c <= 0) { + spin_unlock_irqrestore(&info->irq_spinlock,flags); + break; + } + memcpy(info->xmit_buf + info->xmit_head, buf, c); + info->xmit_head = ((info->xmit_head + c) & + (SERIAL_XMIT_SIZE-1)); + info->xmit_cnt += c; + spin_unlock_irqrestore(&info->irq_spinlock,flags); + buf += c; + count -= c; + ret += c; + } + } + + if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { + spin_lock_irqsave(&info->irq_spinlock,flags); + if (!info->tx_active) + usc_start_transmitter(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } +cleanup: + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_write(%s) returning=%d\n", + __FILE__,__LINE__,info->device_name,ret); + + return ret; + +} /* end of mgsl_write() */ + +/* mgsl_write_room() + * + * Return the count of free bytes in transmit buffer + * + * Arguments: tty pointer to tty info structure + * Return Value: None + */ +static int mgsl_write_room(struct tty_struct *tty) +{ + struct mgsl_struct *info = tty->driver_data; + int ret; + + if (mgsl_paranoia_check(info, tty->name, "mgsl_write_room")) + return 0; + ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; + if (ret < 0) + ret = 0; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_write_room(%s)=%d\n", + __FILE__,__LINE__, info->device_name,ret ); + + if ( info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW ) { + /* operating in synchronous (frame oriented) mode */ + if ( info->tx_active ) + return 0; + else + return HDLC_MAX_FRAME_SIZE; + } + + return ret; + +} /* end of mgsl_write_room() */ + +/* mgsl_chars_in_buffer() + * + * Return the count of bytes in transmit buffer + * + * Arguments: tty pointer to tty info structure + * Return Value: None + */ +static int mgsl_chars_in_buffer(struct tty_struct *tty) +{ + struct mgsl_struct *info = tty->driver_data; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_chars_in_buffer(%s)\n", + __FILE__,__LINE__, info->device_name ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_chars_in_buffer")) + return 0; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_chars_in_buffer(%s)=%d\n", + __FILE__,__LINE__, info->device_name,info->xmit_cnt ); + + if ( info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW ) { + /* operating in synchronous (frame oriented) mode */ + if ( info->tx_active ) + return info->max_frame_size; + else + return 0; + } + + return info->xmit_cnt; +} /* end of mgsl_chars_in_buffer() */ + +/* mgsl_flush_buffer() + * + * Discard all data in the send buffer + * + * Arguments: tty pointer to tty info structure + * Return Value: None + */ +static void mgsl_flush_buffer(struct tty_struct *tty) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_flush_buffer(%s) entry\n", + __FILE__,__LINE__, info->device_name ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_flush_buffer")) + return; + + spin_lock_irqsave(&info->irq_spinlock,flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + del_timer(&info->tx_timer); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + tty_wakeup(tty); +} + +/* mgsl_send_xchar() + * + * Send a high-priority XON/XOFF character + * + * Arguments: tty pointer to tty info structure + * ch character to send + * Return Value: None + */ +static void mgsl_send_xchar(struct tty_struct *tty, char ch) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_send_xchar(%s,%d)\n", + __FILE__,__LINE__, info->device_name, ch ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_send_xchar")) + return; + + info->x_char = ch; + if (ch) { + /* Make sure transmit interrupts are on */ + spin_lock_irqsave(&info->irq_spinlock,flags); + if (!info->tx_enabled) + usc_start_transmitter(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } +} /* end of mgsl_send_xchar() */ + +/* mgsl_throttle() + * + * Signal remote device to throttle send data (our receive data) + * + * Arguments: tty pointer to tty info structure + * Return Value: None + */ +static void mgsl_throttle(struct tty_struct * tty) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_throttle(%s) entry\n", + __FILE__,__LINE__, info->device_name ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_throttle")) + return; + + if (I_IXOFF(tty)) + mgsl_send_xchar(tty, STOP_CHAR(tty)); + + if (tty->termios->c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->irq_spinlock,flags); + info->serial_signals &= ~SerialSignal_RTS; + usc_set_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } +} /* end of mgsl_throttle() */ + +/* mgsl_unthrottle() + * + * Signal remote device to stop throttling send data (our receive data) + * + * Arguments: tty pointer to tty info structure + * Return Value: None + */ +static void mgsl_unthrottle(struct tty_struct * tty) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_unthrottle(%s) entry\n", + __FILE__,__LINE__, info->device_name ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_unthrottle")) + return; + + if (I_IXOFF(tty)) { + if (info->x_char) + info->x_char = 0; + else + mgsl_send_xchar(tty, START_CHAR(tty)); + } + + if (tty->termios->c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->irq_spinlock,flags); + info->serial_signals |= SerialSignal_RTS; + usc_set_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } + +} /* end of mgsl_unthrottle() */ + +/* mgsl_get_stats() + * + * get the current serial parameters information + * + * Arguments: info pointer to device instance data + * user_icount pointer to buffer to hold returned stats + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount __user *user_icount) +{ + int err; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_get_params(%s)\n", + __FILE__,__LINE__, info->device_name); + + if (!user_icount) { + memset(&info->icount, 0, sizeof(info->icount)); + } else { + mutex_lock(&info->port.mutex); + COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount)); + mutex_unlock(&info->port.mutex); + if (err) + return -EFAULT; + } + + return 0; + +} /* end of mgsl_get_stats() */ + +/* mgsl_get_params() + * + * get the current serial parameters information + * + * Arguments: info pointer to device instance data + * user_params pointer to buffer to hold returned params + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_get_params(struct mgsl_struct * info, MGSL_PARAMS __user *user_params) +{ + int err; + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_get_params(%s)\n", + __FILE__,__LINE__, info->device_name); + + mutex_lock(&info->port.mutex); + COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS)); + mutex_unlock(&info->port.mutex); + if (err) { + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_get_params(%s) user buffer copy failed\n", + __FILE__,__LINE__,info->device_name); + return -EFAULT; + } + + return 0; + +} /* end of mgsl_get_params() */ + +/* mgsl_set_params() + * + * set the serial parameters + * + * Arguments: + * + * info pointer to device instance data + * new_params user buffer containing new serial params + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_set_params(struct mgsl_struct * info, MGSL_PARAMS __user *new_params) +{ + unsigned long flags; + MGSL_PARAMS tmp_params; + int err; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_set_params %s\n", __FILE__,__LINE__, + info->device_name ); + COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS)); + if (err) { + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_set_params(%s) user buffer copy failed\n", + __FILE__,__LINE__,info->device_name); + return -EFAULT; + } + + mutex_lock(&info->port.mutex); + spin_lock_irqsave(&info->irq_spinlock,flags); + memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + mgsl_change_params(info); + mutex_unlock(&info->port.mutex); + + return 0; + +} /* end of mgsl_set_params() */ + +/* mgsl_get_txidle() + * + * get the current transmit idle mode + * + * Arguments: info pointer to device instance data + * idle_mode pointer to buffer to hold returned idle mode + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_get_txidle(struct mgsl_struct * info, int __user *idle_mode) +{ + int err; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_get_txidle(%s)=%d\n", + __FILE__,__LINE__, info->device_name, info->idle_mode); + + COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int)); + if (err) { + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_get_txidle(%s) user buffer copy failed\n", + __FILE__,__LINE__,info->device_name); + return -EFAULT; + } + + return 0; + +} /* end of mgsl_get_txidle() */ + +/* mgsl_set_txidle() service ioctl to set transmit idle mode + * + * Arguments: info pointer to device instance data + * idle_mode new idle mode + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_set_txidle(struct mgsl_struct * info, int idle_mode) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_set_txidle(%s,%d)\n", __FILE__,__LINE__, + info->device_name, idle_mode ); + + spin_lock_irqsave(&info->irq_spinlock,flags); + info->idle_mode = idle_mode; + usc_set_txidle( info ); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + return 0; + +} /* end of mgsl_set_txidle() */ + +/* mgsl_txenable() + * + * enable or disable the transmitter + * + * Arguments: + * + * info pointer to device instance data + * enable 1 = enable, 0 = disable + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_txenable(struct mgsl_struct * info, int enable) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_txenable(%s,%d)\n", __FILE__,__LINE__, + info->device_name, enable); + + spin_lock_irqsave(&info->irq_spinlock,flags); + if ( enable ) { + if ( !info->tx_enabled ) { + + usc_start_transmitter(info); + /*-------------------------------------------------- + * if HDLC/SDLC Loop mode, attempt to insert the + * station in the 'loop' by setting CMR:13. Upon + * receipt of the next GoAhead (RxAbort) sequence, + * the OnLoop indicator (CCSR:7) should go active + * to indicate that we are on the loop + *--------------------------------------------------*/ + if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) + usc_loopmode_insert_request( info ); + } + } else { + if ( info->tx_enabled ) + usc_stop_transmitter(info); + } + spin_unlock_irqrestore(&info->irq_spinlock,flags); + return 0; + +} /* end of mgsl_txenable() */ + +/* mgsl_txabort() abort send HDLC frame + * + * Arguments: info pointer to device instance data + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_txabort(struct mgsl_struct * info) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_txabort(%s)\n", __FILE__,__LINE__, + info->device_name); + + spin_lock_irqsave(&info->irq_spinlock,flags); + if ( info->tx_active && info->params.mode == MGSL_MODE_HDLC ) + { + if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) + usc_loopmode_cancel_transmit( info ); + else + usc_TCmd(info,TCmd_SendAbort); + } + spin_unlock_irqrestore(&info->irq_spinlock,flags); + return 0; + +} /* end of mgsl_txabort() */ + +/* mgsl_rxenable() enable or disable the receiver + * + * Arguments: info pointer to device instance data + * enable 1 = enable, 0 = disable + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_rxenable(struct mgsl_struct * info, int enable) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_rxenable(%s,%d)\n", __FILE__,__LINE__, + info->device_name, enable); + + spin_lock_irqsave(&info->irq_spinlock,flags); + if ( enable ) { + if ( !info->rx_enabled ) + usc_start_receiver(info); + } else { + if ( info->rx_enabled ) + usc_stop_receiver(info); + } + spin_unlock_irqrestore(&info->irq_spinlock,flags); + return 0; + +} /* end of mgsl_rxenable() */ + +/* mgsl_wait_event() wait for specified event to occur + * + * Arguments: info pointer to device instance data + * mask pointer to bitmask of events to wait for + * Return Value: 0 if successful and bit mask updated with + * of events triggerred, + * otherwise error code + */ +static int mgsl_wait_event(struct mgsl_struct * info, int __user * mask_ptr) +{ + unsigned long flags; + int s; + int rc=0; + struct mgsl_icount cprev, cnow; + int events; + int mask; + struct _input_signal_events oldsigs, newsigs; + DECLARE_WAITQUEUE(wait, current); + + COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int)); + if (rc) { + return -EFAULT; + } + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_wait_event(%s,%d)\n", __FILE__,__LINE__, + info->device_name, mask); + + spin_lock_irqsave(&info->irq_spinlock,flags); + + /* return immediately if state matches requested events */ + usc_get_serial_signals(info); + s = info->serial_signals; + events = mask & + ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + + ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + + ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + + ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); + if (events) { + spin_unlock_irqrestore(&info->irq_spinlock,flags); + goto exit; + } + + /* save current irq counts */ + cprev = info->icount; + oldsigs = info->input_signal_events; + + /* enable hunt and idle irqs if needed */ + if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { + u16 oldreg = usc_InReg(info,RICR); + u16 newreg = oldreg + + (mask & MgslEvent_ExitHuntMode ? RXSTATUS_EXITED_HUNT:0) + + (mask & MgslEvent_IdleReceived ? RXSTATUS_IDLE_RECEIVED:0); + if (oldreg != newreg) + usc_OutReg(info, RICR, newreg); + } + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&info->event_wait_q, &wait); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + + for(;;) { + schedule(); + if (signal_pending(current)) { + rc = -ERESTARTSYS; + break; + } + + /* get current irq counts */ + spin_lock_irqsave(&info->irq_spinlock,flags); + cnow = info->icount; + newsigs = info->input_signal_events; + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + /* if no change, wait aborted for some reason */ + if (newsigs.dsr_up == oldsigs.dsr_up && + newsigs.dsr_down == oldsigs.dsr_down && + newsigs.dcd_up == oldsigs.dcd_up && + newsigs.dcd_down == oldsigs.dcd_down && + newsigs.cts_up == oldsigs.cts_up && + newsigs.cts_down == oldsigs.cts_down && + newsigs.ri_up == oldsigs.ri_up && + newsigs.ri_down == oldsigs.ri_down && + cnow.exithunt == cprev.exithunt && + cnow.rxidle == cprev.rxidle) { + rc = -EIO; + break; + } + + events = mask & + ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + + (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + + (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + + (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + + (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + + (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + + (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + + (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + + (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + + (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); + if (events) + break; + + cprev = cnow; + oldsigs = newsigs; + } + + remove_wait_queue(&info->event_wait_q, &wait); + set_current_state(TASK_RUNNING); + + if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { + spin_lock_irqsave(&info->irq_spinlock,flags); + if (!waitqueue_active(&info->event_wait_q)) { + /* disable enable exit hunt mode/idle rcvd IRQs */ + usc_OutReg(info, RICR, usc_InReg(info,RICR) & + ~(RXSTATUS_EXITED_HUNT + RXSTATUS_IDLE_RECEIVED)); + } + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } +exit: + if ( rc == 0 ) + PUT_USER(rc, events, mask_ptr); + + return rc; + +} /* end of mgsl_wait_event() */ + +static int modem_input_wait(struct mgsl_struct *info,int arg) +{ + unsigned long flags; + int rc; + struct mgsl_icount cprev, cnow; + DECLARE_WAITQUEUE(wait, current); + + /* save current irq counts */ + spin_lock_irqsave(&info->irq_spinlock,flags); + cprev = info->icount; + add_wait_queue(&info->status_event_wait_q, &wait); + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + for(;;) { + schedule(); + if (signal_pending(current)) { + rc = -ERESTARTSYS; + break; + } + + /* get new irq counts */ + spin_lock_irqsave(&info->irq_spinlock,flags); + cnow = info->icount; + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + /* if no change, wait aborted for some reason */ + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { + rc = -EIO; + break; + } + + /* check for change in caller specified modem input */ + if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || + (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || + (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || + (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { + rc = 0; + break; + } + + cprev = cnow; + } + remove_wait_queue(&info->status_event_wait_q, &wait); + set_current_state(TASK_RUNNING); + return rc; +} + +/* return the state of the serial control and status signals + */ +static int tiocmget(struct tty_struct *tty) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned int result; + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_get_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) + + ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) + + ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) + + ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) + + ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) + + ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0); + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s tiocmget() value=%08X\n", + __FILE__,__LINE__, info->device_name, result ); + return result; +} + +/* set modem control signals (DTR/RTS) + */ +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s tiocmset(%x,%x)\n", + __FILE__,__LINE__,info->device_name, set, clear); + + if (set & TIOCM_RTS) + info->serial_signals |= SerialSignal_RTS; + if (set & TIOCM_DTR) + info->serial_signals |= SerialSignal_DTR; + if (clear & TIOCM_RTS) + info->serial_signals &= ~SerialSignal_RTS; + if (clear & TIOCM_DTR) + info->serial_signals &= ~SerialSignal_DTR; + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_set_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + return 0; +} + +/* mgsl_break() Set or clear transmit break condition + * + * Arguments: tty pointer to tty instance data + * break_state -1=set break condition, 0=clear + * Return Value: error code + */ +static int mgsl_break(struct tty_struct *tty, int break_state) +{ + struct mgsl_struct * info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_break(%s,%d)\n", + __FILE__,__LINE__, info->device_name, break_state); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_break")) + return -EINVAL; + + spin_lock_irqsave(&info->irq_spinlock,flags); + if (break_state == -1) + usc_OutReg(info,IOCR,(u16)(usc_InReg(info,IOCR) | BIT7)); + else + usc_OutReg(info,IOCR,(u16)(usc_InReg(info,IOCR) & ~BIT7)); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + return 0; + +} /* end of mgsl_break() */ + +/* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ +static int msgl_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) + +{ + struct mgsl_struct * info = tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + return 0; +} + +/* mgsl_ioctl() Service an IOCTL request + * + * Arguments: + * + * tty pointer to tty instance data + * cmd IOCTL command code + * arg command argument/context + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct mgsl_struct * info = tty->driver_data; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_ioctl %s cmd=%08X\n", __FILE__,__LINE__, + info->device_name, cmd ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_ioctl")) + return -ENODEV; + + if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && + (cmd != TIOCMIWAIT)) { + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + } + + return mgsl_ioctl_common(info, cmd, arg); +} + +static int mgsl_ioctl_common(struct mgsl_struct *info, unsigned int cmd, unsigned long arg) +{ + void __user *argp = (void __user *)arg; + + switch (cmd) { + case MGSL_IOCGPARAMS: + return mgsl_get_params(info, argp); + case MGSL_IOCSPARAMS: + return mgsl_set_params(info, argp); + case MGSL_IOCGTXIDLE: + return mgsl_get_txidle(info, argp); + case MGSL_IOCSTXIDLE: + return mgsl_set_txidle(info,(int)arg); + case MGSL_IOCTXENABLE: + return mgsl_txenable(info,(int)arg); + case MGSL_IOCRXENABLE: + return mgsl_rxenable(info,(int)arg); + case MGSL_IOCTXABORT: + return mgsl_txabort(info); + case MGSL_IOCGSTATS: + return mgsl_get_stats(info, argp); + case MGSL_IOCWAITEVENT: + return mgsl_wait_event(info, argp); + case MGSL_IOCLOOPTXDONE: + return mgsl_loopmode_send_done(info); + /* Wait for modem input (DCD,RI,DSR,CTS) change + * as specified by mask in arg (TIOCM_RNG/DSR/CD/CTS) + */ + case TIOCMIWAIT: + return modem_input_wait(info,(int)arg); + + default: + return -ENOIOCTLCMD; + } + return 0; +} + +/* mgsl_set_termios() + * + * Set new termios settings + * + * Arguments: + * + * tty pointer to tty structure + * termios pointer to buffer to hold returned old termios + * + * Return Value: None + */ +static void mgsl_set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + struct mgsl_struct *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_set_termios %s\n", __FILE__,__LINE__, + tty->driver->name ); + + mgsl_change_params(info); + + /* Handle transition to B0 status */ + if (old_termios->c_cflag & CBAUD && + !(tty->termios->c_cflag & CBAUD)) { + info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_set_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } + + /* Handle transition away from B0 status */ + if (!(old_termios->c_cflag & CBAUD) && + tty->termios->c_cflag & CBAUD) { + info->serial_signals |= SerialSignal_DTR; + if (!(tty->termios->c_cflag & CRTSCTS) || + !test_bit(TTY_THROTTLED, &tty->flags)) { + info->serial_signals |= SerialSignal_RTS; + } + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_set_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } + + /* Handle turning off CRTSCTS */ + if (old_termios->c_cflag & CRTSCTS && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + mgsl_start(tty); + } + +} /* end of mgsl_set_termios() */ + +/* mgsl_close() + * + * Called when port is closed. Wait for remaining data to be + * sent. Disable port and free resources. + * + * Arguments: + * + * tty pointer to open tty structure + * filp pointer to open file object + * + * Return Value: None + */ +static void mgsl_close(struct tty_struct *tty, struct file * filp) +{ + struct mgsl_struct * info = tty->driver_data; + + if (mgsl_paranoia_check(info, tty->name, "mgsl_close")) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_close(%s) entry, count=%d\n", + __FILE__,__LINE__, info->device_name, info->port.count); + + if (tty_port_close_start(&info->port, tty, filp) == 0) + goto cleanup; + + mutex_lock(&info->port.mutex); + if (info->port.flags & ASYNC_INITIALIZED) + mgsl_wait_until_sent(tty, info->timeout); + mgsl_flush_buffer(tty); + tty_ldisc_flush(tty); + shutdown(info); + mutex_unlock(&info->port.mutex); + + tty_port_close_end(&info->port, tty); + info->port.tty = NULL; +cleanup: + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__, + tty->driver->name, info->port.count); + +} /* end of mgsl_close() */ + +/* mgsl_wait_until_sent() + * + * Wait until the transmitter is empty. + * + * Arguments: + * + * tty pointer to tty info structure + * timeout time to wait for send completion + * + * Return Value: None + */ +static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct mgsl_struct * info = tty->driver_data; + unsigned long orig_jiffies, char_time; + + if (!info ) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_wait_until_sent(%s) entry\n", + __FILE__,__LINE__, info->device_name ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_wait_until_sent")) + return; + + if (!(info->port.flags & ASYNC_INITIALIZED)) + goto exit; + + orig_jiffies = jiffies; + + /* Set check interval to 1/5 of estimated time to + * send a character, and make it at least 1. The check + * interval should also be less than the timeout. + * Note: use tight timings here to satisfy the NIST-PCTS. + */ + + if ( info->params.data_rate ) { + char_time = info->timeout/(32 * 5); + if (!char_time) + char_time++; + } else + char_time = 1; + + if (timeout) + char_time = min_t(unsigned long, char_time, timeout); + + if ( info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW ) { + while (info->tx_active) { + msleep_interruptible(jiffies_to_msecs(char_time)); + if (signal_pending(current)) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } + } else { + while (!(usc_InReg(info,TCSR) & TXSTATUS_ALL_SENT) && + info->tx_enabled) { + msleep_interruptible(jiffies_to_msecs(char_time)); + if (signal_pending(current)) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } + } + +exit: + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_wait_until_sent(%s) exit\n", + __FILE__,__LINE__, info->device_name ); + +} /* end of mgsl_wait_until_sent() */ + +/* mgsl_hangup() + * + * Called by tty_hangup() when a hangup is signaled. + * This is the same as to closing all open files for the port. + * + * Arguments: tty pointer to associated tty object + * Return Value: None + */ +static void mgsl_hangup(struct tty_struct *tty) +{ + struct mgsl_struct * info = tty->driver_data; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_hangup(%s)\n", + __FILE__,__LINE__, info->device_name ); + + if (mgsl_paranoia_check(info, tty->name, "mgsl_hangup")) + return; + + mgsl_flush_buffer(tty); + shutdown(info); + + info->port.count = 0; + info->port.flags &= ~ASYNC_NORMAL_ACTIVE; + info->port.tty = NULL; + + wake_up_interruptible(&info->port.open_wait); + +} /* end of mgsl_hangup() */ + +/* + * carrier_raised() + * + * Return true if carrier is raised + */ + +static int carrier_raised(struct tty_port *port) +{ + unsigned long flags; + struct mgsl_struct *info = container_of(port, struct mgsl_struct, port); + + spin_lock_irqsave(&info->irq_spinlock, flags); + usc_get_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock, flags); + return (info->serial_signals & SerialSignal_DCD) ? 1 : 0; +} + +static void dtr_rts(struct tty_port *port, int on) +{ + struct mgsl_struct *info = container_of(port, struct mgsl_struct, port); + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + if (on) + info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; + else + info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + usc_set_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); +} + + +/* block_til_ready() + * + * Block the current process until the specified port + * is ready to be opened. + * + * Arguments: + * + * tty pointer to tty info structure + * filp pointer to open file object + * info pointer to device instance data + * + * Return Value: 0 if success, otherwise error code + */ +static int block_til_ready(struct tty_struct *tty, struct file * filp, + struct mgsl_struct *info) +{ + DECLARE_WAITQUEUE(wait, current); + int retval; + bool do_clocal = false; + bool extra_count = false; + unsigned long flags; + int dcd; + struct tty_port *port = &info->port; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):block_til_ready on %s\n", + __FILE__,__LINE__, tty->driver->name ); + + if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ + /* nonblock mode is set or port is not enabled */ + port->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + if (tty->termios->c_cflag & CLOCAL) + do_clocal = true; + + /* Wait for carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, port->count is dropped by one, so that + * mgsl_close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + + retval = 0; + add_wait_queue(&port->open_wait, &wait); + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):block_til_ready before block on %s count=%d\n", + __FILE__,__LINE__, tty->driver->name, port->count ); + + spin_lock_irqsave(&info->irq_spinlock, flags); + if (!tty_hung_up_p(filp)) { + extra_count = true; + port->count--; + } + spin_unlock_irqrestore(&info->irq_spinlock, flags); + port->blocked_open++; + + while (1) { + if (tty->termios->c_cflag & CBAUD) + tty_port_raise_dtr_rts(port); + + set_current_state(TASK_INTERRUPTIBLE); + + if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){ + retval = (port->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS; + break; + } + + dcd = tty_port_carrier_raised(&info->port); + + if (!(port->flags & ASYNC_CLOSING) && (do_clocal || dcd)) + break; + + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):block_til_ready blocking on %s count=%d\n", + __FILE__,__LINE__, tty->driver->name, port->count ); + + tty_unlock(); + schedule(); + tty_lock(); + } + + set_current_state(TASK_RUNNING); + remove_wait_queue(&port->open_wait, &wait); + + /* FIXME: Racy on hangup during close wait */ + if (extra_count) + port->count++; + port->blocked_open--; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):block_til_ready after blocking on %s count=%d\n", + __FILE__,__LINE__, tty->driver->name, port->count ); + + if (!retval) + port->flags |= ASYNC_NORMAL_ACTIVE; + + return retval; + +} /* end of block_til_ready() */ + +/* mgsl_open() + * + * Called when a port is opened. Init and enable port. + * Perform serial-specific initialization for the tty structure. + * + * Arguments: tty pointer to tty info structure + * filp associated file pointer + * + * Return Value: 0 if success, otherwise error code + */ +static int mgsl_open(struct tty_struct *tty, struct file * filp) +{ + struct mgsl_struct *info; + int retval, line; + unsigned long flags; + + /* verify range of specified line number */ + line = tty->index; + if ((line < 0) || (line >= mgsl_device_count)) { + printk("%s(%d):mgsl_open with invalid line #%d.\n", + __FILE__,__LINE__,line); + return -ENODEV; + } + + /* find the info structure for the specified line */ + info = mgsl_device_list; + while(info && info->line != line) + info = info->next_device; + if (mgsl_paranoia_check(info, tty->name, "mgsl_open")) + return -ENODEV; + + tty->driver_data = info; + info->port.tty = tty; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_open(%s), old ref count = %d\n", + __FILE__,__LINE__,tty->driver->name, info->port.count); + + /* If port is closing, signal caller to try again */ + if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ + if (info->port.flags & ASYNC_CLOSING) + interruptible_sleep_on(&info->port.close_wait); + retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS); + goto cleanup; + } + + info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0; + + spin_lock_irqsave(&info->netlock, flags); + if (info->netcount) { + retval = -EBUSY; + spin_unlock_irqrestore(&info->netlock, flags); + goto cleanup; + } + info->port.count++; + spin_unlock_irqrestore(&info->netlock, flags); + + if (info->port.count == 1) { + /* 1st open on this device, init hardware */ + retval = startup(info); + if (retval < 0) + goto cleanup; + } + + retval = block_til_ready(tty, filp, info); + if (retval) { + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):block_til_ready(%s) returned %d\n", + __FILE__,__LINE__, info->device_name, retval); + goto cleanup; + } + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):mgsl_open(%s) success\n", + __FILE__,__LINE__, info->device_name); + retval = 0; + +cleanup: + if (retval) { + if (tty->count == 1) + info->port.tty = NULL; /* tty layer will release tty struct */ + if(info->port.count) + info->port.count--; + } + + return retval; + +} /* end of mgsl_open() */ + +/* + * /proc fs routines.... + */ + +static inline void line_info(struct seq_file *m, struct mgsl_struct *info) +{ + char stat_buf[30]; + unsigned long flags; + + if (info->bus_type == MGSL_BUS_TYPE_PCI) { + seq_printf(m, "%s:PCI io:%04X irq:%d mem:%08X lcr:%08X", + info->device_name, info->io_base, info->irq_level, + info->phys_memory_base, info->phys_lcr_base); + } else { + seq_printf(m, "%s:(E)ISA io:%04X irq:%d dma:%d", + info->device_name, info->io_base, + info->irq_level, info->dma_level); + } + + /* output current serial signal states */ + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_get_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + stat_buf[0] = 0; + stat_buf[1] = 0; + if (info->serial_signals & SerialSignal_RTS) + strcat(stat_buf, "|RTS"); + if (info->serial_signals & SerialSignal_CTS) + strcat(stat_buf, "|CTS"); + if (info->serial_signals & SerialSignal_DTR) + strcat(stat_buf, "|DTR"); + if (info->serial_signals & SerialSignal_DSR) + strcat(stat_buf, "|DSR"); + if (info->serial_signals & SerialSignal_DCD) + strcat(stat_buf, "|CD"); + if (info->serial_signals & SerialSignal_RI) + strcat(stat_buf, "|RI"); + + if (info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW ) { + seq_printf(m, " HDLC txok:%d rxok:%d", + info->icount.txok, info->icount.rxok); + if (info->icount.txunder) + seq_printf(m, " txunder:%d", info->icount.txunder); + if (info->icount.txabort) + seq_printf(m, " txabort:%d", info->icount.txabort); + if (info->icount.rxshort) + seq_printf(m, " rxshort:%d", info->icount.rxshort); + if (info->icount.rxlong) + seq_printf(m, " rxlong:%d", info->icount.rxlong); + if (info->icount.rxover) + seq_printf(m, " rxover:%d", info->icount.rxover); + if (info->icount.rxcrc) + seq_printf(m, " rxcrc:%d", info->icount.rxcrc); + } else { + seq_printf(m, " ASYNC tx:%d rx:%d", + info->icount.tx, info->icount.rx); + if (info->icount.frame) + seq_printf(m, " fe:%d", info->icount.frame); + if (info->icount.parity) + seq_printf(m, " pe:%d", info->icount.parity); + if (info->icount.brk) + seq_printf(m, " brk:%d", info->icount.brk); + if (info->icount.overrun) + seq_printf(m, " oe:%d", info->icount.overrun); + } + + /* Append serial signal status to end */ + seq_printf(m, " %s\n", stat_buf+1); + + seq_printf(m, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", + info->tx_active,info->bh_requested,info->bh_running, + info->pending_bh); + + spin_lock_irqsave(&info->irq_spinlock,flags); + { + u16 Tcsr = usc_InReg( info, TCSR ); + u16 Tdmr = usc_InDmaReg( info, TDMR ); + u16 Ticr = usc_InReg( info, TICR ); + u16 Rscr = usc_InReg( info, RCSR ); + u16 Rdmr = usc_InDmaReg( info, RDMR ); + u16 Ricr = usc_InReg( info, RICR ); + u16 Icr = usc_InReg( info, ICR ); + u16 Dccr = usc_InReg( info, DCCR ); + u16 Tmr = usc_InReg( info, TMR ); + u16 Tccr = usc_InReg( info, TCCR ); + u16 Ccar = inw( info->io_base + CCAR ); + seq_printf(m, "tcsr=%04X tdmr=%04X ticr=%04X rcsr=%04X rdmr=%04X\n" + "ricr=%04X icr =%04X dccr=%04X tmr=%04X tccr=%04X ccar=%04X\n", + Tcsr,Tdmr,Ticr,Rscr,Rdmr,Ricr,Icr,Dccr,Tmr,Tccr,Ccar ); + } + spin_unlock_irqrestore(&info->irq_spinlock,flags); +} + +/* Called to print information about devices */ +static int mgsl_proc_show(struct seq_file *m, void *v) +{ + struct mgsl_struct *info; + + seq_printf(m, "synclink driver:%s\n", driver_version); + + info = mgsl_device_list; + while( info ) { + line_info(m, info); + info = info->next_device; + } + return 0; +} + +static int mgsl_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, mgsl_proc_show, NULL); +} + +static const struct file_operations mgsl_proc_fops = { + .owner = THIS_MODULE, + .open = mgsl_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* mgsl_allocate_dma_buffers() + * + * Allocate and format DMA buffers (ISA adapter) + * or format shared memory buffers (PCI adapter). + * + * Arguments: info pointer to device instance data + * Return Value: 0 if success, otherwise error + */ +static int mgsl_allocate_dma_buffers(struct mgsl_struct *info) +{ + unsigned short BuffersPerFrame; + + info->last_mem_alloc = 0; + + /* Calculate the number of DMA buffers necessary to hold the */ + /* largest allowable frame size. Note: If the max frame size is */ + /* not an even multiple of the DMA buffer size then we need to */ + /* round the buffer count per frame up one. */ + + BuffersPerFrame = (unsigned short)(info->max_frame_size/DMABUFFERSIZE); + if ( info->max_frame_size % DMABUFFERSIZE ) + BuffersPerFrame++; + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + /* + * The PCI adapter has 256KBytes of shared memory to use. + * This is 64 PAGE_SIZE buffers. + * + * The first page is used for padding at this time so the + * buffer list does not begin at offset 0 of the PCI + * adapter's shared memory. + * + * The 2nd page is used for the buffer list. A 4K buffer + * list can hold 128 DMA_BUFFER structures at 32 bytes + * each. + * + * This leaves 62 4K pages. + * + * The next N pages are used for transmit frame(s). We + * reserve enough 4K page blocks to hold the required + * number of transmit dma buffers (num_tx_dma_buffers), + * each of MaxFrameSize size. + * + * Of the remaining pages (62-N), determine how many can + * be used to receive full MaxFrameSize inbound frames + */ + info->tx_buffer_count = info->num_tx_dma_buffers * BuffersPerFrame; + info->rx_buffer_count = 62 - info->tx_buffer_count; + } else { + /* Calculate the number of PAGE_SIZE buffers needed for */ + /* receive and transmit DMA buffers. */ + + + /* Calculate the number of DMA buffers necessary to */ + /* hold 7 max size receive frames and one max size transmit frame. */ + /* The receive buffer count is bumped by one so we avoid an */ + /* End of List condition if all receive buffers are used when */ + /* using linked list DMA buffers. */ + + info->tx_buffer_count = info->num_tx_dma_buffers * BuffersPerFrame; + info->rx_buffer_count = (BuffersPerFrame * MAXRXFRAMES) + 6; + + /* + * limit total TxBuffers & RxBuffers to 62 4K total + * (ala PCI Allocation) + */ + + if ( (info->tx_buffer_count + info->rx_buffer_count) > 62 ) + info->rx_buffer_count = 62 - info->tx_buffer_count; + + } + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("%s(%d):Allocating %d TX and %d RX DMA buffers.\n", + __FILE__,__LINE__, info->tx_buffer_count,info->rx_buffer_count); + + if ( mgsl_alloc_buffer_list_memory( info ) < 0 || + mgsl_alloc_frame_memory(info, info->rx_buffer_list, info->rx_buffer_count) < 0 || + mgsl_alloc_frame_memory(info, info->tx_buffer_list, info->tx_buffer_count) < 0 || + mgsl_alloc_intermediate_rxbuffer_memory(info) < 0 || + mgsl_alloc_intermediate_txbuffer_memory(info) < 0 ) { + printk("%s(%d):Can't allocate DMA buffer memory\n",__FILE__,__LINE__); + return -ENOMEM; + } + + mgsl_reset_rx_dma_buffers( info ); + mgsl_reset_tx_dma_buffers( info ); + + return 0; + +} /* end of mgsl_allocate_dma_buffers() */ + +/* + * mgsl_alloc_buffer_list_memory() + * + * Allocate a common DMA buffer for use as the + * receive and transmit buffer lists. + * + * A buffer list is a set of buffer entries where each entry contains + * a pointer to an actual buffer and a pointer to the next buffer entry + * (plus some other info about the buffer). + * + * The buffer entries for a list are built to form a circular list so + * that when the entire list has been traversed you start back at the + * beginning. + * + * This function allocates memory for just the buffer entries. + * The links (pointer to next entry) are filled in with the physical + * address of the next entry so the adapter can navigate the list + * using bus master DMA. The pointers to the actual buffers are filled + * out later when the actual buffers are allocated. + * + * Arguments: info pointer to device instance data + * Return Value: 0 if success, otherwise error + */ +static int mgsl_alloc_buffer_list_memory( struct mgsl_struct *info ) +{ + unsigned int i; + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + /* PCI adapter uses shared memory. */ + info->buffer_list = info->memory_base + info->last_mem_alloc; + info->buffer_list_phys = info->last_mem_alloc; + info->last_mem_alloc += BUFFERLISTSIZE; + } else { + /* ISA adapter uses system memory. */ + /* The buffer lists are allocated as a common buffer that both */ + /* the processor and adapter can access. This allows the driver to */ + /* inspect portions of the buffer while other portions are being */ + /* updated by the adapter using Bus Master DMA. */ + + info->buffer_list = dma_alloc_coherent(NULL, BUFFERLISTSIZE, &info->buffer_list_dma_addr, GFP_KERNEL); + if (info->buffer_list == NULL) + return -ENOMEM; + info->buffer_list_phys = (u32)(info->buffer_list_dma_addr); + } + + /* We got the memory for the buffer entry lists. */ + /* Initialize the memory block to all zeros. */ + memset( info->buffer_list, 0, BUFFERLISTSIZE ); + + /* Save virtual address pointers to the receive and */ + /* transmit buffer lists. (Receive 1st). These pointers will */ + /* be used by the processor to access the lists. */ + info->rx_buffer_list = (DMABUFFERENTRY *)info->buffer_list; + info->tx_buffer_list = (DMABUFFERENTRY *)info->buffer_list; + info->tx_buffer_list += info->rx_buffer_count; + + /* + * Build the links for the buffer entry lists such that + * two circular lists are built. (Transmit and Receive). + * + * Note: the links are physical addresses + * which are read by the adapter to determine the next + * buffer entry to use. + */ + + for ( i = 0; i < info->rx_buffer_count; i++ ) { + /* calculate and store physical address of this buffer entry */ + info->rx_buffer_list[i].phys_entry = + info->buffer_list_phys + (i * sizeof(DMABUFFERENTRY)); + + /* calculate and store physical address of */ + /* next entry in cirular list of entries */ + + info->rx_buffer_list[i].link = info->buffer_list_phys; + + if ( i < info->rx_buffer_count - 1 ) + info->rx_buffer_list[i].link += (i + 1) * sizeof(DMABUFFERENTRY); + } + + for ( i = 0; i < info->tx_buffer_count; i++ ) { + /* calculate and store physical address of this buffer entry */ + info->tx_buffer_list[i].phys_entry = info->buffer_list_phys + + ((info->rx_buffer_count + i) * sizeof(DMABUFFERENTRY)); + + /* calculate and store physical address of */ + /* next entry in cirular list of entries */ + + info->tx_buffer_list[i].link = info->buffer_list_phys + + info->rx_buffer_count * sizeof(DMABUFFERENTRY); + + if ( i < info->tx_buffer_count - 1 ) + info->tx_buffer_list[i].link += (i + 1) * sizeof(DMABUFFERENTRY); + } + + return 0; + +} /* end of mgsl_alloc_buffer_list_memory() */ + +/* Free DMA buffers allocated for use as the + * receive and transmit buffer lists. + * Warning: + * + * The data transfer buffers associated with the buffer list + * MUST be freed before freeing the buffer list itself because + * the buffer list contains the information necessary to free + * the individual buffers! + */ +static void mgsl_free_buffer_list_memory( struct mgsl_struct *info ) +{ + if (info->buffer_list && info->bus_type != MGSL_BUS_TYPE_PCI) + dma_free_coherent(NULL, BUFFERLISTSIZE, info->buffer_list, info->buffer_list_dma_addr); + + info->buffer_list = NULL; + info->rx_buffer_list = NULL; + info->tx_buffer_list = NULL; + +} /* end of mgsl_free_buffer_list_memory() */ + +/* + * mgsl_alloc_frame_memory() + * + * Allocate the frame DMA buffers used by the specified buffer list. + * Each DMA buffer will be one memory page in size. This is necessary + * because memory can fragment enough that it may be impossible + * contiguous pages. + * + * Arguments: + * + * info pointer to device instance data + * BufferList pointer to list of buffer entries + * Buffercount count of buffer entries in buffer list + * + * Return Value: 0 if success, otherwise -ENOMEM + */ +static int mgsl_alloc_frame_memory(struct mgsl_struct *info,DMABUFFERENTRY *BufferList,int Buffercount) +{ + int i; + u32 phys_addr; + + /* Allocate page sized buffers for the receive buffer list */ + + for ( i = 0; i < Buffercount; i++ ) { + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + /* PCI adapter uses shared memory buffers. */ + BufferList[i].virt_addr = info->memory_base + info->last_mem_alloc; + phys_addr = info->last_mem_alloc; + info->last_mem_alloc += DMABUFFERSIZE; + } else { + /* ISA adapter uses system memory. */ + BufferList[i].virt_addr = dma_alloc_coherent(NULL, DMABUFFERSIZE, &BufferList[i].dma_addr, GFP_KERNEL); + if (BufferList[i].virt_addr == NULL) + return -ENOMEM; + phys_addr = (u32)(BufferList[i].dma_addr); + } + BufferList[i].phys_addr = phys_addr; + } + + return 0; + +} /* end of mgsl_alloc_frame_memory() */ + +/* + * mgsl_free_frame_memory() + * + * Free the buffers associated with + * each buffer entry of a buffer list. + * + * Arguments: + * + * info pointer to device instance data + * BufferList pointer to list of buffer entries + * Buffercount count of buffer entries in buffer list + * + * Return Value: None + */ +static void mgsl_free_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList, int Buffercount) +{ + int i; + + if ( BufferList ) { + for ( i = 0 ; i < Buffercount ; i++ ) { + if ( BufferList[i].virt_addr ) { + if ( info->bus_type != MGSL_BUS_TYPE_PCI ) + dma_free_coherent(NULL, DMABUFFERSIZE, BufferList[i].virt_addr, BufferList[i].dma_addr); + BufferList[i].virt_addr = NULL; + } + } + } + +} /* end of mgsl_free_frame_memory() */ + +/* mgsl_free_dma_buffers() + * + * Free DMA buffers + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_free_dma_buffers( struct mgsl_struct *info ) +{ + mgsl_free_frame_memory( info, info->rx_buffer_list, info->rx_buffer_count ); + mgsl_free_frame_memory( info, info->tx_buffer_list, info->tx_buffer_count ); + mgsl_free_buffer_list_memory( info ); + +} /* end of mgsl_free_dma_buffers() */ + + +/* + * mgsl_alloc_intermediate_rxbuffer_memory() + * + * Allocate a buffer large enough to hold max_frame_size. This buffer + * is used to pass an assembled frame to the line discipline. + * + * Arguments: + * + * info pointer to device instance data + * + * Return Value: 0 if success, otherwise -ENOMEM + */ +static int mgsl_alloc_intermediate_rxbuffer_memory(struct mgsl_struct *info) +{ + info->intermediate_rxbuffer = kmalloc(info->max_frame_size, GFP_KERNEL | GFP_DMA); + if ( info->intermediate_rxbuffer == NULL ) + return -ENOMEM; + + return 0; + +} /* end of mgsl_alloc_intermediate_rxbuffer_memory() */ + +/* + * mgsl_free_intermediate_rxbuffer_memory() + * + * + * Arguments: + * + * info pointer to device instance data + * + * Return Value: None + */ +static void mgsl_free_intermediate_rxbuffer_memory(struct mgsl_struct *info) +{ + kfree(info->intermediate_rxbuffer); + info->intermediate_rxbuffer = NULL; + +} /* end of mgsl_free_intermediate_rxbuffer_memory() */ + +/* + * mgsl_alloc_intermediate_txbuffer_memory() + * + * Allocate intermdiate transmit buffer(s) large enough to hold max_frame_size. + * This buffer is used to load transmit frames into the adapter's dma transfer + * buffers when there is sufficient space. + * + * Arguments: + * + * info pointer to device instance data + * + * Return Value: 0 if success, otherwise -ENOMEM + */ +static int mgsl_alloc_intermediate_txbuffer_memory(struct mgsl_struct *info) +{ + int i; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("%s %s(%d) allocating %d tx holding buffers\n", + info->device_name, __FILE__,__LINE__,info->num_tx_holding_buffers); + + memset(info->tx_holding_buffers,0,sizeof(info->tx_holding_buffers)); + + for ( i=0; inum_tx_holding_buffers; ++i) { + info->tx_holding_buffers[i].buffer = + kmalloc(info->max_frame_size, GFP_KERNEL); + if (info->tx_holding_buffers[i].buffer == NULL) { + for (--i; i >= 0; i--) { + kfree(info->tx_holding_buffers[i].buffer); + info->tx_holding_buffers[i].buffer = NULL; + } + return -ENOMEM; + } + } + + return 0; + +} /* end of mgsl_alloc_intermediate_txbuffer_memory() */ + +/* + * mgsl_free_intermediate_txbuffer_memory() + * + * + * Arguments: + * + * info pointer to device instance data + * + * Return Value: None + */ +static void mgsl_free_intermediate_txbuffer_memory(struct mgsl_struct *info) +{ + int i; + + for ( i=0; inum_tx_holding_buffers; ++i ) { + kfree(info->tx_holding_buffers[i].buffer); + info->tx_holding_buffers[i].buffer = NULL; + } + + info->get_tx_holding_index = 0; + info->put_tx_holding_index = 0; + info->tx_holding_count = 0; + +} /* end of mgsl_free_intermediate_txbuffer_memory() */ + + +/* + * load_next_tx_holding_buffer() + * + * attempts to load the next buffered tx request into the + * tx dma buffers + * + * Arguments: + * + * info pointer to device instance data + * + * Return Value: true if next buffered tx request loaded + * into adapter's tx dma buffer, + * false otherwise + */ +static bool load_next_tx_holding_buffer(struct mgsl_struct *info) +{ + bool ret = false; + + if ( info->tx_holding_count ) { + /* determine if we have enough tx dma buffers + * to accommodate the next tx frame + */ + struct tx_holding_buffer *ptx = + &info->tx_holding_buffers[info->get_tx_holding_index]; + int num_free = num_free_tx_dma_buffers(info); + int num_needed = ptx->buffer_size / DMABUFFERSIZE; + if ( ptx->buffer_size % DMABUFFERSIZE ) + ++num_needed; + + if (num_needed <= num_free) { + info->xmit_cnt = ptx->buffer_size; + mgsl_load_tx_dma_buffer(info,ptx->buffer,ptx->buffer_size); + + --info->tx_holding_count; + if ( ++info->get_tx_holding_index >= info->num_tx_holding_buffers) + info->get_tx_holding_index=0; + + /* restart transmit timer */ + mod_timer(&info->tx_timer, jiffies + msecs_to_jiffies(5000)); + + ret = true; + } + } + + return ret; +} + +/* + * save_tx_buffer_request() + * + * attempt to store transmit frame request for later transmission + * + * Arguments: + * + * info pointer to device instance data + * Buffer pointer to buffer containing frame to load + * BufferSize size in bytes of frame in Buffer + * + * Return Value: 1 if able to store, 0 otherwise + */ +static int save_tx_buffer_request(struct mgsl_struct *info,const char *Buffer, unsigned int BufferSize) +{ + struct tx_holding_buffer *ptx; + + if ( info->tx_holding_count >= info->num_tx_holding_buffers ) { + return 0; /* all buffers in use */ + } + + ptx = &info->tx_holding_buffers[info->put_tx_holding_index]; + ptx->buffer_size = BufferSize; + memcpy( ptx->buffer, Buffer, BufferSize); + + ++info->tx_holding_count; + if ( ++info->put_tx_holding_index >= info->num_tx_holding_buffers) + info->put_tx_holding_index=0; + + return 1; +} + +static int mgsl_claim_resources(struct mgsl_struct *info) +{ + if (request_region(info->io_base,info->io_addr_size,"synclink") == NULL) { + printk( "%s(%d):I/O address conflict on device %s Addr=%08X\n", + __FILE__,__LINE__,info->device_name, info->io_base); + return -ENODEV; + } + info->io_addr_requested = true; + + if ( request_irq(info->irq_level,mgsl_interrupt,info->irq_flags, + info->device_name, info ) < 0 ) { + printk( "%s(%d):Cant request interrupt on device %s IRQ=%d\n", + __FILE__,__LINE__,info->device_name, info->irq_level ); + goto errout; + } + info->irq_requested = true; + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + if (request_mem_region(info->phys_memory_base,0x40000,"synclink") == NULL) { + printk( "%s(%d):mem addr conflict device %s Addr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_memory_base); + goto errout; + } + info->shared_mem_requested = true; + if (request_mem_region(info->phys_lcr_base + info->lcr_offset,128,"synclink") == NULL) { + printk( "%s(%d):lcr mem addr conflict device %s Addr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_lcr_base + info->lcr_offset); + goto errout; + } + info->lcr_mem_requested = true; + + info->memory_base = ioremap_nocache(info->phys_memory_base, + 0x40000); + if (!info->memory_base) { + printk( "%s(%d):Cant map shared memory on device %s MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_memory_base ); + goto errout; + } + + if ( !mgsl_memory_test(info) ) { + printk( "%s(%d):Failed shared memory test %s MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_memory_base ); + goto errout; + } + + info->lcr_base = ioremap_nocache(info->phys_lcr_base, + PAGE_SIZE); + if (!info->lcr_base) { + printk( "%s(%d):Cant map LCR memory on device %s MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_lcr_base ); + goto errout; + } + info->lcr_base += info->lcr_offset; + + } else { + /* claim DMA channel */ + + if (request_dma(info->dma_level,info->device_name) < 0){ + printk( "%s(%d):Cant request DMA channel on device %s DMA=%d\n", + __FILE__,__LINE__,info->device_name, info->dma_level ); + mgsl_release_resources( info ); + return -ENODEV; + } + info->dma_requested = true; + + /* ISA adapter uses bus master DMA */ + set_dma_mode(info->dma_level,DMA_MODE_CASCADE); + enable_dma(info->dma_level); + } + + if ( mgsl_allocate_dma_buffers(info) < 0 ) { + printk( "%s(%d):Cant allocate DMA buffers on device %s DMA=%d\n", + __FILE__,__LINE__,info->device_name, info->dma_level ); + goto errout; + } + + return 0; +errout: + mgsl_release_resources(info); + return -ENODEV; + +} /* end of mgsl_claim_resources() */ + +static void mgsl_release_resources(struct mgsl_struct *info) +{ + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_release_resources(%s) entry\n", + __FILE__,__LINE__,info->device_name ); + + if ( info->irq_requested ) { + free_irq(info->irq_level, info); + info->irq_requested = false; + } + if ( info->dma_requested ) { + disable_dma(info->dma_level); + free_dma(info->dma_level); + info->dma_requested = false; + } + mgsl_free_dma_buffers(info); + mgsl_free_intermediate_rxbuffer_memory(info); + mgsl_free_intermediate_txbuffer_memory(info); + + if ( info->io_addr_requested ) { + release_region(info->io_base,info->io_addr_size); + info->io_addr_requested = false; + } + if ( info->shared_mem_requested ) { + release_mem_region(info->phys_memory_base,0x40000); + info->shared_mem_requested = false; + } + if ( info->lcr_mem_requested ) { + release_mem_region(info->phys_lcr_base + info->lcr_offset,128); + info->lcr_mem_requested = false; + } + if (info->memory_base){ + iounmap(info->memory_base); + info->memory_base = NULL; + } + if (info->lcr_base){ + iounmap(info->lcr_base - info->lcr_offset); + info->lcr_base = NULL; + } + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_release_resources(%s) exit\n", + __FILE__,__LINE__,info->device_name ); + +} /* end of mgsl_release_resources() */ + +/* mgsl_add_device() + * + * Add the specified device instance data structure to the + * global linked list of devices and increment the device count. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_add_device( struct mgsl_struct *info ) +{ + info->next_device = NULL; + info->line = mgsl_device_count; + sprintf(info->device_name,"ttySL%d",info->line); + + if (info->line < MAX_TOTAL_DEVICES) { + if (maxframe[info->line]) + info->max_frame_size = maxframe[info->line]; + + if (txdmabufs[info->line]) { + info->num_tx_dma_buffers = txdmabufs[info->line]; + if (info->num_tx_dma_buffers < 1) + info->num_tx_dma_buffers = 1; + } + + if (txholdbufs[info->line]) { + info->num_tx_holding_buffers = txholdbufs[info->line]; + if (info->num_tx_holding_buffers < 1) + info->num_tx_holding_buffers = 1; + else if (info->num_tx_holding_buffers > MAX_TX_HOLDING_BUFFERS) + info->num_tx_holding_buffers = MAX_TX_HOLDING_BUFFERS; + } + } + + mgsl_device_count++; + + if ( !mgsl_device_list ) + mgsl_device_list = info; + else { + struct mgsl_struct *current_dev = mgsl_device_list; + while( current_dev->next_device ) + current_dev = current_dev->next_device; + current_dev->next_device = info; + } + + if ( info->max_frame_size < 4096 ) + info->max_frame_size = 4096; + else if ( info->max_frame_size > 65535 ) + info->max_frame_size = 65535; + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + printk( "SyncLink PCI v%d %s: IO=%04X IRQ=%d Mem=%08X,%08X MaxFrameSize=%u\n", + info->hw_version + 1, info->device_name, info->io_base, info->irq_level, + info->phys_memory_base, info->phys_lcr_base, + info->max_frame_size ); + } else { + printk( "SyncLink ISA %s: IO=%04X IRQ=%d DMA=%d MaxFrameSize=%u\n", + info->device_name, info->io_base, info->irq_level, info->dma_level, + info->max_frame_size ); + } + +#if SYNCLINK_GENERIC_HDLC + hdlcdev_init(info); +#endif + +} /* end of mgsl_add_device() */ + +static const struct tty_port_operations mgsl_port_ops = { + .carrier_raised = carrier_raised, + .dtr_rts = dtr_rts, +}; + + +/* mgsl_allocate_device() + * + * Allocate and initialize a device instance structure + * + * Arguments: none + * Return Value: pointer to mgsl_struct if success, otherwise NULL + */ +static struct mgsl_struct* mgsl_allocate_device(void) +{ + struct mgsl_struct *info; + + info = kzalloc(sizeof(struct mgsl_struct), + GFP_KERNEL); + + if (!info) { + printk("Error can't allocate device instance data\n"); + } else { + tty_port_init(&info->port); + info->port.ops = &mgsl_port_ops; + info->magic = MGSL_MAGIC; + INIT_WORK(&info->task, mgsl_bh_handler); + info->max_frame_size = 4096; + info->port.close_delay = 5*HZ/10; + info->port.closing_wait = 30*HZ; + init_waitqueue_head(&info->status_event_wait_q); + init_waitqueue_head(&info->event_wait_q); + spin_lock_init(&info->irq_spinlock); + spin_lock_init(&info->netlock); + memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); + info->idle_mode = HDLC_TXIDLE_FLAGS; + info->num_tx_dma_buffers = 1; + info->num_tx_holding_buffers = 0; + } + + return info; + +} /* end of mgsl_allocate_device()*/ + +static const struct tty_operations mgsl_ops = { + .open = mgsl_open, + .close = mgsl_close, + .write = mgsl_write, + .put_char = mgsl_put_char, + .flush_chars = mgsl_flush_chars, + .write_room = mgsl_write_room, + .chars_in_buffer = mgsl_chars_in_buffer, + .flush_buffer = mgsl_flush_buffer, + .ioctl = mgsl_ioctl, + .throttle = mgsl_throttle, + .unthrottle = mgsl_unthrottle, + .send_xchar = mgsl_send_xchar, + .break_ctl = mgsl_break, + .wait_until_sent = mgsl_wait_until_sent, + .set_termios = mgsl_set_termios, + .stop = mgsl_stop, + .start = mgsl_start, + .hangup = mgsl_hangup, + .tiocmget = tiocmget, + .tiocmset = tiocmset, + .get_icount = msgl_get_icount, + .proc_fops = &mgsl_proc_fops, +}; + +/* + * perform tty device initialization + */ +static int mgsl_init_tty(void) +{ + int rc; + + serial_driver = alloc_tty_driver(128); + if (!serial_driver) + return -ENOMEM; + + serial_driver->owner = THIS_MODULE; + serial_driver->driver_name = "synclink"; + serial_driver->name = "ttySL"; + serial_driver->major = ttymajor; + serial_driver->minor_start = 64; + serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + serial_driver->subtype = SERIAL_TYPE_NORMAL; + serial_driver->init_termios = tty_std_termios; + serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + serial_driver->init_termios.c_ispeed = 9600; + serial_driver->init_termios.c_ospeed = 9600; + serial_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(serial_driver, &mgsl_ops); + if ((rc = tty_register_driver(serial_driver)) < 0) { + printk("%s(%d):Couldn't register serial driver\n", + __FILE__,__LINE__); + put_tty_driver(serial_driver); + serial_driver = NULL; + return rc; + } + + printk("%s %s, tty major#%d\n", + driver_name, driver_version, + serial_driver->major); + return 0; +} + +/* enumerate user specified ISA adapters + */ +static void mgsl_enum_isa_devices(void) +{ + struct mgsl_struct *info; + int i; + + /* Check for user specified ISA devices */ + + for (i=0 ;(i < MAX_ISA_DEVICES) && io[i] && irq[i]; i++){ + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("ISA device specified io=%04X,irq=%d,dma=%d\n", + io[i], irq[i], dma[i] ); + + info = mgsl_allocate_device(); + if ( !info ) { + /* error allocating device instance data */ + if ( debug_level >= DEBUG_LEVEL_ERROR ) + printk( "can't allocate device instance data.\n"); + continue; + } + + /* Copy user configuration info to device instance data */ + info->io_base = (unsigned int)io[i]; + info->irq_level = (unsigned int)irq[i]; + info->irq_level = irq_canonicalize(info->irq_level); + info->dma_level = (unsigned int)dma[i]; + info->bus_type = MGSL_BUS_TYPE_ISA; + info->io_addr_size = 16; + info->irq_flags = 0; + + mgsl_add_device( info ); + } +} + +static void synclink_cleanup(void) +{ + int rc; + struct mgsl_struct *info; + struct mgsl_struct *tmp; + + printk("Unloading %s: %s\n", driver_name, driver_version); + + if (serial_driver) { + if ((rc = tty_unregister_driver(serial_driver))) + printk("%s(%d) failed to unregister tty driver err=%d\n", + __FILE__,__LINE__,rc); + put_tty_driver(serial_driver); + } + + info = mgsl_device_list; + while(info) { +#if SYNCLINK_GENERIC_HDLC + hdlcdev_exit(info); +#endif + mgsl_release_resources(info); + tmp = info; + info = info->next_device; + kfree(tmp); + } + + if (pci_registered) + pci_unregister_driver(&synclink_pci_driver); +} + +static int __init synclink_init(void) +{ + int rc; + + if (break_on_load) { + mgsl_get_text_ptr(); + BREAKPOINT(); + } + + printk("%s %s\n", driver_name, driver_version); + + mgsl_enum_isa_devices(); + if ((rc = pci_register_driver(&synclink_pci_driver)) < 0) + printk("%s:failed to register PCI driver, error=%d\n",__FILE__,rc); + else + pci_registered = true; + + if ((rc = mgsl_init_tty()) < 0) + goto error; + + return 0; + +error: + synclink_cleanup(); + return rc; +} + +static void __exit synclink_exit(void) +{ + synclink_cleanup(); +} + +module_init(synclink_init); +module_exit(synclink_exit); + +/* + * usc_RTCmd() + * + * Issue a USC Receive/Transmit command to the + * Channel Command/Address Register (CCAR). + * + * Notes: + * + * The command is encoded in the most significant 5 bits <15..11> + * of the CCAR value. Bits <10..7> of the CCAR must be preserved + * and Bits <6..0> must be written as zeros. + * + * Arguments: + * + * info pointer to device information structure + * Cmd command mask (use symbolic macros) + * + * Return Value: + * + * None + */ +static void usc_RTCmd( struct mgsl_struct *info, u16 Cmd ) +{ + /* output command to CCAR in bits <15..11> */ + /* preserve bits <10..7>, bits <6..0> must be zero */ + + outw( Cmd + info->loopback_bits, info->io_base + CCAR ); + + /* Read to flush write to CCAR */ + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + inw( info->io_base + CCAR ); + +} /* end of usc_RTCmd() */ + +/* + * usc_DmaCmd() + * + * Issue a DMA command to the DMA Command/Address Register (DCAR). + * + * Arguments: + * + * info pointer to device information structure + * Cmd DMA command mask (usc_DmaCmd_XX Macros) + * + * Return Value: + * + * None + */ +static void usc_DmaCmd( struct mgsl_struct *info, u16 Cmd ) +{ + /* write command mask to DCAR */ + outw( Cmd + info->mbre_bit, info->io_base ); + + /* Read to flush write to DCAR */ + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + inw( info->io_base ); + +} /* end of usc_DmaCmd() */ + +/* + * usc_OutDmaReg() + * + * Write a 16-bit value to a USC DMA register + * + * Arguments: + * + * info pointer to device info structure + * RegAddr register address (number) for write + * RegValue 16-bit value to write to register + * + * Return Value: + * + * None + * + */ +static void usc_OutDmaReg( struct mgsl_struct *info, u16 RegAddr, u16 RegValue ) +{ + /* Note: The DCAR is located at the adapter base address */ + /* Note: must preserve state of BIT8 in DCAR */ + + outw( RegAddr + info->mbre_bit, info->io_base ); + outw( RegValue, info->io_base ); + + /* Read to flush write to DCAR */ + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + inw( info->io_base ); + +} /* end of usc_OutDmaReg() */ + +/* + * usc_InDmaReg() + * + * Read a 16-bit value from a DMA register + * + * Arguments: + * + * info pointer to device info structure + * RegAddr register address (number) to read from + * + * Return Value: + * + * The 16-bit value read from register + * + */ +static u16 usc_InDmaReg( struct mgsl_struct *info, u16 RegAddr ) +{ + /* Note: The DCAR is located at the adapter base address */ + /* Note: must preserve state of BIT8 in DCAR */ + + outw( RegAddr + info->mbre_bit, info->io_base ); + return inw( info->io_base ); + +} /* end of usc_InDmaReg() */ + +/* + * + * usc_OutReg() + * + * Write a 16-bit value to a USC serial channel register + * + * Arguments: + * + * info pointer to device info structure + * RegAddr register address (number) to write to + * RegValue 16-bit value to write to register + * + * Return Value: + * + * None + * + */ +static void usc_OutReg( struct mgsl_struct *info, u16 RegAddr, u16 RegValue ) +{ + outw( RegAddr + info->loopback_bits, info->io_base + CCAR ); + outw( RegValue, info->io_base + CCAR ); + + /* Read to flush write to CCAR */ + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + inw( info->io_base + CCAR ); + +} /* end of usc_OutReg() */ + +/* + * usc_InReg() + * + * Reads a 16-bit value from a USC serial channel register + * + * Arguments: + * + * info pointer to device extension + * RegAddr register address (number) to read from + * + * Return Value: + * + * 16-bit value read from register + */ +static u16 usc_InReg( struct mgsl_struct *info, u16 RegAddr ) +{ + outw( RegAddr + info->loopback_bits, info->io_base + CCAR ); + return inw( info->io_base + CCAR ); + +} /* end of usc_InReg() */ + +/* usc_set_sdlc_mode() + * + * Set up the adapter for SDLC DMA communications. + * + * Arguments: info pointer to device instance data + * Return Value: NONE + */ +static void usc_set_sdlc_mode( struct mgsl_struct *info ) +{ + u16 RegValue; + bool PreSL1660; + + /* + * determine if the IUSC on the adapter is pre-SL1660. If + * not, take advantage of the UnderWait feature of more + * modern chips. If an underrun occurs and this bit is set, + * the transmitter will idle the programmed idle pattern + * until the driver has time to service the underrun. Otherwise, + * the dma controller may get the cycles previously requested + * and begin transmitting queued tx data. + */ + usc_OutReg(info,TMCR,0x1f); + RegValue=usc_InReg(info,TMDR); + PreSL1660 = (RegValue == IUSC_PRE_SL1660); + + if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) + { + /* + ** Channel Mode Register (CMR) + ** + ** <15..14> 10 Tx Sub Modes, Send Flag on Underrun + ** <13> 0 0 = Transmit Disabled (initially) + ** <12> 0 1 = Consecutive Idles share common 0 + ** <11..8> 1110 Transmitter Mode = HDLC/SDLC Loop + ** <7..4> 0000 Rx Sub Modes, addr/ctrl field handling + ** <3..0> 0110 Receiver Mode = HDLC/SDLC + ** + ** 1000 1110 0000 0110 = 0x8e06 + */ + RegValue = 0x8e06; + + /*-------------------------------------------------- + * ignore user options for UnderRun Actions and + * preambles + *--------------------------------------------------*/ + } + else + { + /* Channel mode Register (CMR) + * + * <15..14> 00 Tx Sub modes, Underrun Action + * <13> 0 1 = Send Preamble before opening flag + * <12> 0 1 = Consecutive Idles share common 0 + * <11..8> 0110 Transmitter mode = HDLC/SDLC + * <7..4> 0000 Rx Sub modes, addr/ctrl field handling + * <3..0> 0110 Receiver mode = HDLC/SDLC + * + * 0000 0110 0000 0110 = 0x0606 + */ + if (info->params.mode == MGSL_MODE_RAW) { + RegValue = 0x0001; /* Set Receive mode = external sync */ + + usc_OutReg( info, IOCR, /* Set IOCR DCD is RxSync Detect Input */ + (unsigned short)((usc_InReg(info, IOCR) & ~(BIT13|BIT12)) | BIT12)); + + /* + * TxSubMode: + * CMR <15> 0 Don't send CRC on Tx Underrun + * CMR <14> x undefined + * CMR <13> 0 Send preamble before openning sync + * CMR <12> 0 Send 8-bit syncs, 1=send Syncs per TxLength + * + * TxMode: + * CMR <11-8) 0100 MonoSync + * + * 0x00 0100 xxxx xxxx 04xx + */ + RegValue |= 0x0400; + } + else { + + RegValue = 0x0606; + + if ( info->params.flags & HDLC_FLAG_UNDERRUN_ABORT15 ) + RegValue |= BIT14; + else if ( info->params.flags & HDLC_FLAG_UNDERRUN_FLAG ) + RegValue |= BIT15; + else if ( info->params.flags & HDLC_FLAG_UNDERRUN_CRC ) + RegValue |= BIT15 + BIT14; + } + + if ( info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE ) + RegValue |= BIT13; + } + + if ( info->params.mode == MGSL_MODE_HDLC && + (info->params.flags & HDLC_FLAG_SHARE_ZERO) ) + RegValue |= BIT12; + + if ( info->params.addr_filter != 0xff ) + { + /* set up receive address filtering */ + usc_OutReg( info, RSR, info->params.addr_filter ); + RegValue |= BIT4; + } + + usc_OutReg( info, CMR, RegValue ); + info->cmr_value = RegValue; + + /* Receiver mode Register (RMR) + * + * <15..13> 000 encoding + * <12..11> 00 FCS = 16bit CRC CCITT (x15 + x12 + x5 + 1) + * <10> 1 1 = Set CRC to all 1s (use for SDLC/HDLC) + * <9> 0 1 = Include Receive chars in CRC + * <8> 1 1 = Use Abort/PE bit as abort indicator + * <7..6> 00 Even parity + * <5> 0 parity disabled + * <4..2> 000 Receive Char Length = 8 bits + * <1..0> 00 Disable Receiver + * + * 0000 0101 0000 0000 = 0x0500 + */ + + RegValue = 0x0500; + + switch ( info->params.encoding ) { + case HDLC_ENCODING_NRZB: RegValue |= BIT13; break; + case HDLC_ENCODING_NRZI_MARK: RegValue |= BIT14; break; + case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT14 + BIT13; break; + case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT15; break; + case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT15 + BIT13; break; + case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14; break; + case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14 + BIT13; break; + } + + if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_16_CCITT ) + RegValue |= BIT9; + else if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_32_CCITT ) + RegValue |= ( BIT12 | BIT10 | BIT9 ); + + usc_OutReg( info, RMR, RegValue ); + + /* Set the Receive count Limit Register (RCLR) to 0xffff. */ + /* When an opening flag of an SDLC frame is recognized the */ + /* Receive Character count (RCC) is loaded with the value in */ + /* RCLR. The RCC is decremented for each received byte. The */ + /* value of RCC is stored after the closing flag of the frame */ + /* allowing the frame size to be computed. */ + + usc_OutReg( info, RCLR, RCLRVALUE ); + + usc_RCmd( info, RCmd_SelectRicrdma_level ); + + /* Receive Interrupt Control Register (RICR) + * + * <15..8> ? RxFIFO DMA Request Level + * <7> 0 Exited Hunt IA (Interrupt Arm) + * <6> 0 Idle Received IA + * <5> 0 Break/Abort IA + * <4> 0 Rx Bound IA + * <3> 1 Queued status reflects oldest 2 bytes in FIFO + * <2> 0 Abort/PE IA + * <1> 1 Rx Overrun IA + * <0> 0 Select TC0 value for readback + * + * 0000 0000 0000 1000 = 0x000a + */ + + /* Carry over the Exit Hunt and Idle Received bits */ + /* in case they have been armed by usc_ArmEvents. */ + + RegValue = usc_InReg( info, RICR ) & 0xc0; + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + usc_OutReg( info, RICR, (u16)(0x030a | RegValue) ); + else + usc_OutReg( info, RICR, (u16)(0x140a | RegValue) ); + + /* Unlatch all Rx status bits and clear Rx status IRQ Pending */ + + usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, RECEIVE_STATUS ); + + /* Transmit mode Register (TMR) + * + * <15..13> 000 encoding + * <12..11> 00 FCS = 16bit CRC CCITT (x15 + x12 + x5 + 1) + * <10> 1 1 = Start CRC as all 1s (use for SDLC/HDLC) + * <9> 0 1 = Tx CRC Enabled + * <8> 0 1 = Append CRC to end of transmit frame + * <7..6> 00 Transmit parity Even + * <5> 0 Transmit parity Disabled + * <4..2> 000 Tx Char Length = 8 bits + * <1..0> 00 Disable Transmitter + * + * 0000 0100 0000 0000 = 0x0400 + */ + + RegValue = 0x0400; + + switch ( info->params.encoding ) { + case HDLC_ENCODING_NRZB: RegValue |= BIT13; break; + case HDLC_ENCODING_NRZI_MARK: RegValue |= BIT14; break; + case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT14 + BIT13; break; + case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT15; break; + case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT15 + BIT13; break; + case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14; break; + case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14 + BIT13; break; + } + + if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_16_CCITT ) + RegValue |= BIT9 + BIT8; + else if ( (info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_32_CCITT ) + RegValue |= ( BIT12 | BIT10 | BIT9 | BIT8); + + usc_OutReg( info, TMR, RegValue ); + + usc_set_txidle( info ); + + + usc_TCmd( info, TCmd_SelectTicrdma_level ); + + /* Transmit Interrupt Control Register (TICR) + * + * <15..8> ? Transmit FIFO DMA Level + * <7> 0 Present IA (Interrupt Arm) + * <6> 0 Idle Sent IA + * <5> 1 Abort Sent IA + * <4> 1 EOF/EOM Sent IA + * <3> 0 CRC Sent IA + * <2> 1 1 = Wait for SW Trigger to Start Frame + * <1> 1 Tx Underrun IA + * <0> 0 TC0 constant on read back + * + * 0000 0000 0011 0110 = 0x0036 + */ + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + usc_OutReg( info, TICR, 0x0736 ); + else + usc_OutReg( info, TICR, 0x1436 ); + + usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); + + /* + ** Transmit Command/Status Register (TCSR) + ** + ** <15..12> 0000 TCmd + ** <11> 0/1 UnderWait + ** <10..08> 000 TxIdle + ** <7> x PreSent + ** <6> x IdleSent + ** <5> x AbortSent + ** <4> x EOF/EOM Sent + ** <3> x CRC Sent + ** <2> x All Sent + ** <1> x TxUnder + ** <0> x TxEmpty + ** + ** 0000 0000 0000 0000 = 0x0000 + */ + info->tcsr_value = 0; + + if ( !PreSL1660 ) + info->tcsr_value |= TCSR_UNDERWAIT; + + usc_OutReg( info, TCSR, info->tcsr_value ); + + /* Clock mode Control Register (CMCR) + * + * <15..14> 00 counter 1 Source = Disabled + * <13..12> 00 counter 0 Source = Disabled + * <11..10> 11 BRG1 Input is TxC Pin + * <9..8> 11 BRG0 Input is TxC Pin + * <7..6> 01 DPLL Input is BRG1 Output + * <5..3> XXX TxCLK comes from Port 0 + * <2..0> XXX RxCLK comes from Port 1 + * + * 0000 1111 0111 0111 = 0x0f77 + */ + + RegValue = 0x0f40; + + if ( info->params.flags & HDLC_FLAG_RXC_DPLL ) + RegValue |= 0x0003; /* RxCLK from DPLL */ + else if ( info->params.flags & HDLC_FLAG_RXC_BRG ) + RegValue |= 0x0004; /* RxCLK from BRG0 */ + else if ( info->params.flags & HDLC_FLAG_RXC_TXCPIN) + RegValue |= 0x0006; /* RxCLK from TXC Input */ + else + RegValue |= 0x0007; /* RxCLK from Port1 */ + + if ( info->params.flags & HDLC_FLAG_TXC_DPLL ) + RegValue |= 0x0018; /* TxCLK from DPLL */ + else if ( info->params.flags & HDLC_FLAG_TXC_BRG ) + RegValue |= 0x0020; /* TxCLK from BRG0 */ + else if ( info->params.flags & HDLC_FLAG_TXC_RXCPIN) + RegValue |= 0x0038; /* RxCLK from TXC Input */ + else + RegValue |= 0x0030; /* TxCLK from Port0 */ + + usc_OutReg( info, CMCR, RegValue ); + + + /* Hardware Configuration Register (HCR) + * + * <15..14> 00 CTR0 Divisor:00=32,01=16,10=8,11=4 + * <13> 0 CTR1DSel:0=CTR0Div determines CTR0Div + * <12> 0 CVOK:0=report code violation in biphase + * <11..10> 00 DPLL Divisor:00=32,01=16,10=8,11=4 + * <9..8> XX DPLL mode:00=disable,01=NRZ,10=Biphase,11=Biphase Level + * <7..6> 00 reserved + * <5> 0 BRG1 mode:0=continuous,1=single cycle + * <4> X BRG1 Enable + * <3..2> 00 reserved + * <1> 0 BRG0 mode:0=continuous,1=single cycle + * <0> 0 BRG0 Enable + */ + + RegValue = 0x0000; + + if ( info->params.flags & (HDLC_FLAG_RXC_DPLL + HDLC_FLAG_TXC_DPLL) ) { + u32 XtalSpeed; + u32 DpllDivisor; + u16 Tc; + + /* DPLL is enabled. Use BRG1 to provide continuous reference clock */ + /* for DPLL. DPLL mode in HCR is dependent on the encoding used. */ + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + XtalSpeed = 11059200; + else + XtalSpeed = 14745600; + + if ( info->params.flags & HDLC_FLAG_DPLL_DIV16 ) { + DpllDivisor = 16; + RegValue |= BIT10; + } + else if ( info->params.flags & HDLC_FLAG_DPLL_DIV8 ) { + DpllDivisor = 8; + RegValue |= BIT11; + } + else + DpllDivisor = 32; + + /* Tc = (Xtal/Speed) - 1 */ + /* If twice the remainder of (Xtal/Speed) is greater than Speed */ + /* then rounding up gives a more precise time constant. Instead */ + /* of rounding up and then subtracting 1 we just don't subtract */ + /* the one in this case. */ + + /*-------------------------------------------------- + * ejz: for DPLL mode, application should use the + * same clock speed as the partner system, even + * though clocking is derived from the input RxData. + * In case the user uses a 0 for the clock speed, + * default to 0xffffffff and don't try to divide by + * zero + *--------------------------------------------------*/ + if ( info->params.clock_speed ) + { + Tc = (u16)((XtalSpeed/DpllDivisor)/info->params.clock_speed); + if ( !((((XtalSpeed/DpllDivisor) % info->params.clock_speed) * 2) + / info->params.clock_speed) ) + Tc--; + } + else + Tc = -1; + + + /* Write 16-bit Time Constant for BRG1 */ + usc_OutReg( info, TC1R, Tc ); + + RegValue |= BIT4; /* enable BRG1 */ + + switch ( info->params.encoding ) { + case HDLC_ENCODING_NRZ: + case HDLC_ENCODING_NRZB: + case HDLC_ENCODING_NRZI_MARK: + case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT8; break; + case HDLC_ENCODING_BIPHASE_MARK: + case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT9; break; + case HDLC_ENCODING_BIPHASE_LEVEL: + case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT9 + BIT8; break; + } + } + + usc_OutReg( info, HCR, RegValue ); + + + /* Channel Control/status Register (CCSR) + * + * <15> X RCC FIFO Overflow status (RO) + * <14> X RCC FIFO Not Empty status (RO) + * <13> 0 1 = Clear RCC FIFO (WO) + * <12> X DPLL Sync (RW) + * <11> X DPLL 2 Missed Clocks status (RO) + * <10> X DPLL 1 Missed Clock status (RO) + * <9..8> 00 DPLL Resync on rising and falling edges (RW) + * <7> X SDLC Loop On status (RO) + * <6> X SDLC Loop Send status (RO) + * <5> 1 Bypass counters for TxClk and RxClk (RW) + * <4..2> 000 Last Char of SDLC frame has 8 bits (RW) + * <1..0> 00 reserved + * + * 0000 0000 0010 0000 = 0x0020 + */ + + usc_OutReg( info, CCSR, 0x1020 ); + + + if ( info->params.flags & HDLC_FLAG_AUTO_CTS ) { + usc_OutReg( info, SICR, + (u16)(usc_InReg(info,SICR) | SICR_CTS_INACTIVE) ); + } + + + /* enable Master Interrupt Enable bit (MIE) */ + usc_EnableMasterIrqBit( info ); + + usc_ClearIrqPendingBits( info, RECEIVE_STATUS + RECEIVE_DATA + + TRANSMIT_STATUS + TRANSMIT_DATA + MISC); + + /* arm RCC underflow interrupt */ + usc_OutReg(info, SICR, (u16)(usc_InReg(info,SICR) | BIT3)); + usc_EnableInterrupts(info, MISC); + + info->mbre_bit = 0; + outw( 0, info->io_base ); /* clear Master Bus Enable (DCAR) */ + usc_DmaCmd( info, DmaCmd_ResetAllChannels ); /* disable both DMA channels */ + info->mbre_bit = BIT8; + outw( BIT8, info->io_base ); /* set Master Bus Enable (DCAR) */ + + if (info->bus_type == MGSL_BUS_TYPE_ISA) { + /* Enable DMAEN (Port 7, Bit 14) */ + /* This connects the DMA request signal to the ISA bus */ + usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT15) & ~BIT14)); + } + + /* DMA Control Register (DCR) + * + * <15..14> 10 Priority mode = Alternating Tx/Rx + * 01 Rx has priority + * 00 Tx has priority + * + * <13> 1 Enable Priority Preempt per DCR<15..14> + * (WARNING DCR<11..10> must be 00 when this is 1) + * 0 Choose activate channel per DCR<11..10> + * + * <12> 0 Little Endian for Array/List + * <11..10> 00 Both Channels can use each bus grant + * <9..6> 0000 reserved + * <5> 0 7 CLK - Minimum Bus Re-request Interval + * <4> 0 1 = drive D/C and S/D pins + * <3> 1 1 = Add one wait state to all DMA cycles. + * <2> 0 1 = Strobe /UAS on every transfer. + * <1..0> 11 Addr incrementing only affects LS24 bits + * + * 0110 0000 0000 1011 = 0x600b + */ + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + /* PCI adapter does not need DMA wait state */ + usc_OutDmaReg( info, DCR, 0xa00b ); + } + else + usc_OutDmaReg( info, DCR, 0x800b ); + + + /* Receive DMA mode Register (RDMR) + * + * <15..14> 11 DMA mode = Linked List Buffer mode + * <13> 1 RSBinA/L = store Rx status Block in Arrary/List entry + * <12> 1 Clear count of List Entry after fetching + * <11..10> 00 Address mode = Increment + * <9> 1 Terminate Buffer on RxBound + * <8> 0 Bus Width = 16bits + * <7..0> ? status Bits (write as 0s) + * + * 1111 0010 0000 0000 = 0xf200 + */ + + usc_OutDmaReg( info, RDMR, 0xf200 ); + + + /* Transmit DMA mode Register (TDMR) + * + * <15..14> 11 DMA mode = Linked List Buffer mode + * <13> 1 TCBinA/L = fetch Tx Control Block from List entry + * <12> 1 Clear count of List Entry after fetching + * <11..10> 00 Address mode = Increment + * <9> 1 Terminate Buffer on end of frame + * <8> 0 Bus Width = 16bits + * <7..0> ? status Bits (Read Only so write as 0) + * + * 1111 0010 0000 0000 = 0xf200 + */ + + usc_OutDmaReg( info, TDMR, 0xf200 ); + + + /* DMA Interrupt Control Register (DICR) + * + * <15> 1 DMA Interrupt Enable + * <14> 0 1 = Disable IEO from USC + * <13> 0 1 = Don't provide vector during IntAck + * <12> 1 1 = Include status in Vector + * <10..2> 0 reserved, Must be 0s + * <1> 0 1 = Rx DMA Interrupt Enabled + * <0> 0 1 = Tx DMA Interrupt Enabled + * + * 1001 0000 0000 0000 = 0x9000 + */ + + usc_OutDmaReg( info, DICR, 0x9000 ); + + usc_InDmaReg( info, RDMR ); /* clear pending receive DMA IRQ bits */ + usc_InDmaReg( info, TDMR ); /* clear pending transmit DMA IRQ bits */ + usc_OutDmaReg( info, CDIR, 0x0303 ); /* clear IUS and Pending for Tx and Rx */ + + /* Channel Control Register (CCR) + * + * <15..14> 10 Use 32-bit Tx Control Blocks (TCBs) + * <13> 0 Trigger Tx on SW Command Disabled + * <12> 0 Flag Preamble Disabled + * <11..10> 00 Preamble Length + * <9..8> 00 Preamble Pattern + * <7..6> 10 Use 32-bit Rx status Blocks (RSBs) + * <5> 0 Trigger Rx on SW Command Disabled + * <4..0> 0 reserved + * + * 1000 0000 1000 0000 = 0x8080 + */ + + RegValue = 0x8080; + + switch ( info->params.preamble_length ) { + case HDLC_PREAMBLE_LENGTH_16BITS: RegValue |= BIT10; break; + case HDLC_PREAMBLE_LENGTH_32BITS: RegValue |= BIT11; break; + case HDLC_PREAMBLE_LENGTH_64BITS: RegValue |= BIT11 + BIT10; break; + } + + switch ( info->params.preamble ) { + case HDLC_PREAMBLE_PATTERN_FLAGS: RegValue |= BIT8 + BIT12; break; + case HDLC_PREAMBLE_PATTERN_ONES: RegValue |= BIT8; break; + case HDLC_PREAMBLE_PATTERN_10: RegValue |= BIT9; break; + case HDLC_PREAMBLE_PATTERN_01: RegValue |= BIT9 + BIT8; break; + } + + usc_OutReg( info, CCR, RegValue ); + + + /* + * Burst/Dwell Control Register + * + * <15..8> 0x20 Maximum number of transfers per bus grant + * <7..0> 0x00 Maximum number of clock cycles per bus grant + */ + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + /* don't limit bus occupancy on PCI adapter */ + usc_OutDmaReg( info, BDCR, 0x0000 ); + } + else + usc_OutDmaReg( info, BDCR, 0x2000 ); + + usc_stop_transmitter(info); + usc_stop_receiver(info); + +} /* end of usc_set_sdlc_mode() */ + +/* usc_enable_loopback() + * + * Set the 16C32 for internal loopback mode. + * The TxCLK and RxCLK signals are generated from the BRG0 and + * the TxD is looped back to the RxD internally. + * + * Arguments: info pointer to device instance data + * enable 1 = enable loopback, 0 = disable + * Return Value: None + */ +static void usc_enable_loopback(struct mgsl_struct *info, int enable) +{ + if (enable) { + /* blank external TXD output */ + usc_OutReg(info,IOCR,usc_InReg(info,IOCR) | (BIT7+BIT6)); + + /* Clock mode Control Register (CMCR) + * + * <15..14> 00 counter 1 Disabled + * <13..12> 00 counter 0 Disabled + * <11..10> 11 BRG1 Input is TxC Pin + * <9..8> 11 BRG0 Input is TxC Pin + * <7..6> 01 DPLL Input is BRG1 Output + * <5..3> 100 TxCLK comes from BRG0 + * <2..0> 100 RxCLK comes from BRG0 + * + * 0000 1111 0110 0100 = 0x0f64 + */ + + usc_OutReg( info, CMCR, 0x0f64 ); + + /* Write 16-bit Time Constant for BRG0 */ + /* use clock speed if available, otherwise use 8 for diagnostics */ + if (info->params.clock_speed) { + if (info->bus_type == MGSL_BUS_TYPE_PCI) + usc_OutReg(info, TC0R, (u16)((11059200/info->params.clock_speed)-1)); + else + usc_OutReg(info, TC0R, (u16)((14745600/info->params.clock_speed)-1)); + } else + usc_OutReg(info, TC0R, (u16)8); + + /* Hardware Configuration Register (HCR) Clear Bit 1, BRG0 + mode = Continuous Set Bit 0 to enable BRG0. */ + usc_OutReg( info, HCR, (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) ); + + /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */ + usc_OutReg(info, IOCR, (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004)); + + /* set Internal Data loopback mode */ + info->loopback_bits = 0x300; + outw( 0x0300, info->io_base + CCAR ); + } else { + /* enable external TXD output */ + usc_OutReg(info,IOCR,usc_InReg(info,IOCR) & ~(BIT7+BIT6)); + + /* clear Internal Data loopback mode */ + info->loopback_bits = 0; + outw( 0,info->io_base + CCAR ); + } + +} /* end of usc_enable_loopback() */ + +/* usc_enable_aux_clock() + * + * Enabled the AUX clock output at the specified frequency. + * + * Arguments: + * + * info pointer to device extension + * data_rate data rate of clock in bits per second + * A data rate of 0 disables the AUX clock. + * + * Return Value: None + */ +static void usc_enable_aux_clock( struct mgsl_struct *info, u32 data_rate ) +{ + u32 XtalSpeed; + u16 Tc; + + if ( data_rate ) { + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + XtalSpeed = 11059200; + else + XtalSpeed = 14745600; + + + /* Tc = (Xtal/Speed) - 1 */ + /* If twice the remainder of (Xtal/Speed) is greater than Speed */ + /* then rounding up gives a more precise time constant. Instead */ + /* of rounding up and then subtracting 1 we just don't subtract */ + /* the one in this case. */ + + + Tc = (u16)(XtalSpeed/data_rate); + if ( !(((XtalSpeed % data_rate) * 2) / data_rate) ) + Tc--; + + /* Write 16-bit Time Constant for BRG0 */ + usc_OutReg( info, TC0R, Tc ); + + /* + * Hardware Configuration Register (HCR) + * Clear Bit 1, BRG0 mode = Continuous + * Set Bit 0 to enable BRG0. + */ + + usc_OutReg( info, HCR, (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) ); + + /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */ + usc_OutReg( info, IOCR, (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004) ); + } else { + /* data rate == 0 so turn off BRG0 */ + usc_OutReg( info, HCR, (u16)(usc_InReg( info, HCR ) & ~BIT0) ); + } + +} /* end of usc_enable_aux_clock() */ + +/* + * + * usc_process_rxoverrun_sync() + * + * This function processes a receive overrun by resetting the + * receive DMA buffers and issuing a Purge Rx FIFO command + * to allow the receiver to continue receiving. + * + * Arguments: + * + * info pointer to device extension + * + * Return Value: None + */ +static void usc_process_rxoverrun_sync( struct mgsl_struct *info ) +{ + int start_index; + int end_index; + int frame_start_index; + bool start_of_frame_found = false; + bool end_of_frame_found = false; + bool reprogram_dma = false; + + DMABUFFERENTRY *buffer_list = info->rx_buffer_list; + u32 phys_addr; + + usc_DmaCmd( info, DmaCmd_PauseRxChannel ); + usc_RCmd( info, RCmd_EnterHuntmode ); + usc_RTCmd( info, RTCmd_PurgeRxFifo ); + + /* CurrentRxBuffer points to the 1st buffer of the next */ + /* possibly available receive frame. */ + + frame_start_index = start_index = end_index = info->current_rx_buffer; + + /* Search for an unfinished string of buffers. This means */ + /* that a receive frame started (at least one buffer with */ + /* count set to zero) but there is no terminiting buffer */ + /* (status set to non-zero). */ + + while( !buffer_list[end_index].count ) + { + /* Count field has been reset to zero by 16C32. */ + /* This buffer is currently in use. */ + + if ( !start_of_frame_found ) + { + start_of_frame_found = true; + frame_start_index = end_index; + end_of_frame_found = false; + } + + if ( buffer_list[end_index].status ) + { + /* Status field has been set by 16C32. */ + /* This is the last buffer of a received frame. */ + + /* We want to leave the buffers for this frame intact. */ + /* Move on to next possible frame. */ + + start_of_frame_found = false; + end_of_frame_found = true; + } + + /* advance to next buffer entry in linked list */ + end_index++; + if ( end_index == info->rx_buffer_count ) + end_index = 0; + + if ( start_index == end_index ) + { + /* The entire list has been searched with all Counts == 0 and */ + /* all Status == 0. The receive buffers are */ + /* completely screwed, reset all receive buffers! */ + mgsl_reset_rx_dma_buffers( info ); + frame_start_index = 0; + start_of_frame_found = false; + reprogram_dma = true; + break; + } + } + + if ( start_of_frame_found && !end_of_frame_found ) + { + /* There is an unfinished string of receive DMA buffers */ + /* as a result of the receiver overrun. */ + + /* Reset the buffers for the unfinished frame */ + /* and reprogram the receive DMA controller to start */ + /* at the 1st buffer of unfinished frame. */ + + start_index = frame_start_index; + + do + { + *((unsigned long *)&(info->rx_buffer_list[start_index++].count)) = DMABUFFERSIZE; + + /* Adjust index for wrap around. */ + if ( start_index == info->rx_buffer_count ) + start_index = 0; + + } while( start_index != end_index ); + + reprogram_dma = true; + } + + if ( reprogram_dma ) + { + usc_UnlatchRxstatusBits(info,RXSTATUS_ALL); + usc_ClearIrqPendingBits(info, RECEIVE_DATA|RECEIVE_STATUS); + usc_UnlatchRxstatusBits(info, RECEIVE_DATA|RECEIVE_STATUS); + + usc_EnableReceiver(info,DISABLE_UNCONDITIONAL); + + /* This empties the receive FIFO and loads the RCC with RCLR */ + usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); + + /* program 16C32 with physical address of 1st DMA buffer entry */ + phys_addr = info->rx_buffer_list[frame_start_index].phys_entry; + usc_OutDmaReg( info, NRARL, (u16)phys_addr ); + usc_OutDmaReg( info, NRARU, (u16)(phys_addr >> 16) ); + + usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS ); + usc_EnableInterrupts( info, RECEIVE_STATUS ); + + /* 1. Arm End of Buffer (EOB) Receive DMA Interrupt (BIT2 of RDIAR) */ + /* 2. Enable Receive DMA Interrupts (BIT1 of DICR) */ + + usc_OutDmaReg( info, RDIAR, BIT3 + BIT2 ); + usc_OutDmaReg( info, DICR, (u16)(usc_InDmaReg(info,DICR) | BIT1) ); + usc_DmaCmd( info, DmaCmd_InitRxChannel ); + if ( info->params.flags & HDLC_FLAG_AUTO_DCD ) + usc_EnableReceiver(info,ENABLE_AUTO_DCD); + else + usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); + } + else + { + /* This empties the receive FIFO and loads the RCC with RCLR */ + usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); + usc_RTCmd( info, RTCmd_PurgeRxFifo ); + } + +} /* end of usc_process_rxoverrun_sync() */ + +/* usc_stop_receiver() + * + * Disable USC receiver + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_stop_receiver( struct mgsl_struct *info ) +{ + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):usc_stop_receiver(%s)\n", + __FILE__,__LINE__, info->device_name ); + + /* Disable receive DMA channel. */ + /* This also disables receive DMA channel interrupts */ + usc_DmaCmd( info, DmaCmd_ResetRxChannel ); + + usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS ); + usc_DisableInterrupts( info, RECEIVE_DATA + RECEIVE_STATUS ); + + usc_EnableReceiver(info,DISABLE_UNCONDITIONAL); + + /* This empties the receive FIFO and loads the RCC with RCLR */ + usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); + usc_RTCmd( info, RTCmd_PurgeRxFifo ); + + info->rx_enabled = false; + info->rx_overflow = false; + info->rx_rcc_underrun = false; + +} /* end of stop_receiver() */ + +/* usc_start_receiver() + * + * Enable the USC receiver + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_start_receiver( struct mgsl_struct *info ) +{ + u32 phys_addr; + + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):usc_start_receiver(%s)\n", + __FILE__,__LINE__, info->device_name ); + + mgsl_reset_rx_dma_buffers( info ); + usc_stop_receiver( info ); + + usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) ); + usc_RTCmd( info, RTCmd_PurgeRxFifo ); + + if ( info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW ) { + /* DMA mode Transfers */ + /* Program the DMA controller. */ + /* Enable the DMA controller end of buffer interrupt. */ + + /* program 16C32 with physical address of 1st DMA buffer entry */ + phys_addr = info->rx_buffer_list[0].phys_entry; + usc_OutDmaReg( info, NRARL, (u16)phys_addr ); + usc_OutDmaReg( info, NRARU, (u16)(phys_addr >> 16) ); + + usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS ); + usc_EnableInterrupts( info, RECEIVE_STATUS ); + + /* 1. Arm End of Buffer (EOB) Receive DMA Interrupt (BIT2 of RDIAR) */ + /* 2. Enable Receive DMA Interrupts (BIT1 of DICR) */ + + usc_OutDmaReg( info, RDIAR, BIT3 + BIT2 ); + usc_OutDmaReg( info, DICR, (u16)(usc_InDmaReg(info,DICR) | BIT1) ); + usc_DmaCmd( info, DmaCmd_InitRxChannel ); + if ( info->params.flags & HDLC_FLAG_AUTO_DCD ) + usc_EnableReceiver(info,ENABLE_AUTO_DCD); + else + usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); + } else { + usc_UnlatchRxstatusBits(info, RXSTATUS_ALL); + usc_ClearIrqPendingBits(info, RECEIVE_DATA + RECEIVE_STATUS); + usc_EnableInterrupts(info, RECEIVE_DATA); + + usc_RTCmd( info, RTCmd_PurgeRxFifo ); + usc_RCmd( info, RCmd_EnterHuntmode ); + + usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); + } + + usc_OutReg( info, CCSR, 0x1020 ); + + info->rx_enabled = true; + +} /* end of usc_start_receiver() */ + +/* usc_start_transmitter() + * + * Enable the USC transmitter and send a transmit frame if + * one is loaded in the DMA buffers. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_start_transmitter( struct mgsl_struct *info ) +{ + u32 phys_addr; + unsigned int FrameSize; + + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):usc_start_transmitter(%s)\n", + __FILE__,__LINE__, info->device_name ); + + if ( info->xmit_cnt ) { + + /* If auto RTS enabled and RTS is inactive, then assert */ + /* RTS and set a flag indicating that the driver should */ + /* negate RTS when the transmission completes. */ + + info->drop_rts_on_tx_done = false; + + if ( info->params.flags & HDLC_FLAG_AUTO_RTS ) { + usc_get_serial_signals( info ); + if ( !(info->serial_signals & SerialSignal_RTS) ) { + info->serial_signals |= SerialSignal_RTS; + usc_set_serial_signals( info ); + info->drop_rts_on_tx_done = true; + } + } + + + if ( info->params.mode == MGSL_MODE_ASYNC ) { + if ( !info->tx_active ) { + usc_UnlatchTxstatusBits(info, TXSTATUS_ALL); + usc_ClearIrqPendingBits(info, TRANSMIT_STATUS + TRANSMIT_DATA); + usc_EnableInterrupts(info, TRANSMIT_DATA); + usc_load_txfifo(info); + } + } else { + /* Disable transmit DMA controller while programming. */ + usc_DmaCmd( info, DmaCmd_ResetTxChannel ); + + /* Transmit DMA buffer is loaded, so program USC */ + /* to send the frame contained in the buffers. */ + + FrameSize = info->tx_buffer_list[info->start_tx_dma_buffer].rcc; + + /* if operating in Raw sync mode, reset the rcc component + * of the tx dma buffer entry, otherwise, the serial controller + * will send a closing sync char after this count. + */ + if ( info->params.mode == MGSL_MODE_RAW ) + info->tx_buffer_list[info->start_tx_dma_buffer].rcc = 0; + + /* Program the Transmit Character Length Register (TCLR) */ + /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */ + usc_OutReg( info, TCLR, (u16)FrameSize ); + + usc_RTCmd( info, RTCmd_PurgeTxFifo ); + + /* Program the address of the 1st DMA Buffer Entry in linked list */ + phys_addr = info->tx_buffer_list[info->start_tx_dma_buffer].phys_entry; + usc_OutDmaReg( info, NTARL, (u16)phys_addr ); + usc_OutDmaReg( info, NTARU, (u16)(phys_addr >> 16) ); + + usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); + usc_EnableInterrupts( info, TRANSMIT_STATUS ); + + if ( info->params.mode == MGSL_MODE_RAW && + info->num_tx_dma_buffers > 1 ) { + /* When running external sync mode, attempt to 'stream' transmit */ + /* by filling tx dma buffers as they become available. To do this */ + /* we need to enable Tx DMA EOB Status interrupts : */ + /* */ + /* 1. Arm End of Buffer (EOB) Transmit DMA Interrupt (BIT2 of TDIAR) */ + /* 2. Enable Transmit DMA Interrupts (BIT0 of DICR) */ + + usc_OutDmaReg( info, TDIAR, BIT2|BIT3 ); + usc_OutDmaReg( info, DICR, (u16)(usc_InDmaReg(info,DICR) | BIT0) ); + } + + /* Initialize Transmit DMA Channel */ + usc_DmaCmd( info, DmaCmd_InitTxChannel ); + + usc_TCmd( info, TCmd_SendFrame ); + + mod_timer(&info->tx_timer, jiffies + + msecs_to_jiffies(5000)); + } + info->tx_active = true; + } + + if ( !info->tx_enabled ) { + info->tx_enabled = true; + if ( info->params.flags & HDLC_FLAG_AUTO_CTS ) + usc_EnableTransmitter(info,ENABLE_AUTO_CTS); + else + usc_EnableTransmitter(info,ENABLE_UNCONDITIONAL); + } + +} /* end of usc_start_transmitter() */ + +/* usc_stop_transmitter() + * + * Stops the transmitter and DMA + * + * Arguments: info pointer to device isntance data + * Return Value: None + */ +static void usc_stop_transmitter( struct mgsl_struct *info ) +{ + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):usc_stop_transmitter(%s)\n", + __FILE__,__LINE__, info->device_name ); + + del_timer(&info->tx_timer); + + usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, TRANSMIT_STATUS + TRANSMIT_DATA ); + usc_DisableInterrupts( info, TRANSMIT_STATUS + TRANSMIT_DATA ); + + usc_EnableTransmitter(info,DISABLE_UNCONDITIONAL); + usc_DmaCmd( info, DmaCmd_ResetTxChannel ); + usc_RTCmd( info, RTCmd_PurgeTxFifo ); + + info->tx_enabled = false; + info->tx_active = false; + +} /* end of usc_stop_transmitter() */ + +/* usc_load_txfifo() + * + * Fill the transmit FIFO until the FIFO is full or + * there is no more data to load. + * + * Arguments: info pointer to device extension (instance data) + * Return Value: None + */ +static void usc_load_txfifo( struct mgsl_struct *info ) +{ + int Fifocount; + u8 TwoBytes[2]; + + if ( !info->xmit_cnt && !info->x_char ) + return; + + /* Select transmit FIFO status readback in TICR */ + usc_TCmd( info, TCmd_SelectTicrTxFifostatus ); + + /* load the Transmit FIFO until FIFOs full or all data sent */ + + while( (Fifocount = usc_InReg(info, TICR) >> 8) && info->xmit_cnt ) { + /* there is more space in the transmit FIFO and */ + /* there is more data in transmit buffer */ + + if ( (info->xmit_cnt > 1) && (Fifocount > 1) && !info->x_char ) { + /* write a 16-bit word from transmit buffer to 16C32 */ + + TwoBytes[0] = info->xmit_buf[info->xmit_tail++]; + info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1); + TwoBytes[1] = info->xmit_buf[info->xmit_tail++]; + info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1); + + outw( *((u16 *)TwoBytes), info->io_base + DATAREG); + + info->xmit_cnt -= 2; + info->icount.tx += 2; + } else { + /* only 1 byte left to transmit or 1 FIFO slot left */ + + outw( (inw( info->io_base + CCAR) & 0x0780) | (TDR+LSBONLY), + info->io_base + CCAR ); + + if (info->x_char) { + /* transmit pending high priority char */ + outw( info->x_char,info->io_base + CCAR ); + info->x_char = 0; + } else { + outw( info->xmit_buf[info->xmit_tail++],info->io_base + CCAR ); + info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1); + info->xmit_cnt--; + } + info->icount.tx++; + } + } + +} /* end of usc_load_txfifo() */ + +/* usc_reset() + * + * Reset the adapter to a known state and prepare it for further use. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_reset( struct mgsl_struct *info ) +{ + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) { + int i; + u32 readval; + + /* Set BIT30 of Misc Control Register */ + /* (Local Control Register 0x50) to force reset of USC. */ + + volatile u32 *MiscCtrl = (u32 *)(info->lcr_base + 0x50); + u32 *LCR0BRDR = (u32 *)(info->lcr_base + 0x28); + + info->misc_ctrl_value |= BIT30; + *MiscCtrl = info->misc_ctrl_value; + + /* + * Force at least 170ns delay before clearing + * reset bit. Each read from LCR takes at least + * 30ns so 10 times for 300ns to be safe. + */ + for(i=0;i<10;i++) + readval = *MiscCtrl; + + info->misc_ctrl_value &= ~BIT30; + *MiscCtrl = info->misc_ctrl_value; + + *LCR0BRDR = BUS_DESCRIPTOR( + 1, // Write Strobe Hold (0-3) + 2, // Write Strobe Delay (0-3) + 2, // Read Strobe Delay (0-3) + 0, // NWDD (Write data-data) (0-3) + 4, // NWAD (Write Addr-data) (0-31) + 0, // NXDA (Read/Write Data-Addr) (0-3) + 0, // NRDD (Read Data-Data) (0-3) + 5 // NRAD (Read Addr-Data) (0-31) + ); + } else { + /* do HW reset */ + outb( 0,info->io_base + 8 ); + } + + info->mbre_bit = 0; + info->loopback_bits = 0; + info->usc_idle_mode = 0; + + /* + * Program the Bus Configuration Register (BCR) + * + * <15> 0 Don't use separate address + * <14..6> 0 reserved + * <5..4> 00 IAckmode = Default, don't care + * <3> 1 Bus Request Totem Pole output + * <2> 1 Use 16 Bit data bus + * <1> 0 IRQ Totem Pole output + * <0> 0 Don't Shift Right Addr + * + * 0000 0000 0000 1100 = 0x000c + * + * By writing to io_base + SDPIN the Wait/Ack pin is + * programmed to work as a Wait pin. + */ + + outw( 0x000c,info->io_base + SDPIN ); + + + outw( 0,info->io_base ); + outw( 0,info->io_base + CCAR ); + + /* select little endian byte ordering */ + usc_RTCmd( info, RTCmd_SelectLittleEndian ); + + + /* Port Control Register (PCR) + * + * <15..14> 11 Port 7 is Output (~DMAEN, Bit 14 : 0 = Enabled) + * <13..12> 11 Port 6 is Output (~INTEN, Bit 12 : 0 = Enabled) + * <11..10> 00 Port 5 is Input (No Connect, Don't Care) + * <9..8> 00 Port 4 is Input (No Connect, Don't Care) + * <7..6> 11 Port 3 is Output (~RTS, Bit 6 : 0 = Enabled ) + * <5..4> 11 Port 2 is Output (~DTR, Bit 4 : 0 = Enabled ) + * <3..2> 01 Port 1 is Input (Dedicated RxC) + * <1..0> 01 Port 0 is Input (Dedicated TxC) + * + * 1111 0000 1111 0101 = 0xf0f5 + */ + + usc_OutReg( info, PCR, 0xf0f5 ); + + + /* + * Input/Output Control Register + * + * <15..14> 00 CTS is active low input + * <13..12> 00 DCD is active low input + * <11..10> 00 TxREQ pin is input (DSR) + * <9..8> 00 RxREQ pin is input (RI) + * <7..6> 00 TxD is output (Transmit Data) + * <5..3> 000 TxC Pin in Input (14.7456MHz Clock) + * <2..0> 100 RxC is Output (drive with BRG0) + * + * 0000 0000 0000 0100 = 0x0004 + */ + + usc_OutReg( info, IOCR, 0x0004 ); + +} /* end of usc_reset() */ + +/* usc_set_async_mode() + * + * Program adapter for asynchronous communications. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_set_async_mode( struct mgsl_struct *info ) +{ + u16 RegValue; + + /* disable interrupts while programming USC */ + usc_DisableMasterIrqBit( info ); + + outw( 0, info->io_base ); /* clear Master Bus Enable (DCAR) */ + usc_DmaCmd( info, DmaCmd_ResetAllChannels ); /* disable both DMA channels */ + + usc_loopback_frame( info ); + + /* Channel mode Register (CMR) + * + * <15..14> 00 Tx Sub modes, 00 = 1 Stop Bit + * <13..12> 00 00 = 16X Clock + * <11..8> 0000 Transmitter mode = Asynchronous + * <7..6> 00 reserved? + * <5..4> 00 Rx Sub modes, 00 = 16X Clock + * <3..0> 0000 Receiver mode = Asynchronous + * + * 0000 0000 0000 0000 = 0x0 + */ + + RegValue = 0; + if ( info->params.stop_bits != 1 ) + RegValue |= BIT14; + usc_OutReg( info, CMR, RegValue ); + + + /* Receiver mode Register (RMR) + * + * <15..13> 000 encoding = None + * <12..08> 00000 reserved (Sync Only) + * <7..6> 00 Even parity + * <5> 0 parity disabled + * <4..2> 000 Receive Char Length = 8 bits + * <1..0> 00 Disable Receiver + * + * 0000 0000 0000 0000 = 0x0 + */ + + RegValue = 0; + + if ( info->params.data_bits != 8 ) + RegValue |= BIT4+BIT3+BIT2; + + if ( info->params.parity != ASYNC_PARITY_NONE ) { + RegValue |= BIT5; + if ( info->params.parity != ASYNC_PARITY_ODD ) + RegValue |= BIT6; + } + + usc_OutReg( info, RMR, RegValue ); + + + /* Set IRQ trigger level */ + + usc_RCmd( info, RCmd_SelectRicrIntLevel ); + + + /* Receive Interrupt Control Register (RICR) + * + * <15..8> ? RxFIFO IRQ Request Level + * + * Note: For async mode the receive FIFO level must be set + * to 0 to avoid the situation where the FIFO contains fewer bytes + * than the trigger level and no more data is expected. + * + * <7> 0 Exited Hunt IA (Interrupt Arm) + * <6> 0 Idle Received IA + * <5> 0 Break/Abort IA + * <4> 0 Rx Bound IA + * <3> 0 Queued status reflects oldest byte in FIFO + * <2> 0 Abort/PE IA + * <1> 0 Rx Overrun IA + * <0> 0 Select TC0 value for readback + * + * 0000 0000 0100 0000 = 0x0000 + (FIFOLEVEL in MSB) + */ + + usc_OutReg( info, RICR, 0x0000 ); + + usc_UnlatchRxstatusBits( info, RXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, RECEIVE_STATUS ); + + + /* Transmit mode Register (TMR) + * + * <15..13> 000 encoding = None + * <12..08> 00000 reserved (Sync Only) + * <7..6> 00 Transmit parity Even + * <5> 0 Transmit parity Disabled + * <4..2> 000 Tx Char Length = 8 bits + * <1..0> 00 Disable Transmitter + * + * 0000 0000 0000 0000 = 0x0 + */ + + RegValue = 0; + + if ( info->params.data_bits != 8 ) + RegValue |= BIT4+BIT3+BIT2; + + if ( info->params.parity != ASYNC_PARITY_NONE ) { + RegValue |= BIT5; + if ( info->params.parity != ASYNC_PARITY_ODD ) + RegValue |= BIT6; + } + + usc_OutReg( info, TMR, RegValue ); + + usc_set_txidle( info ); + + + /* Set IRQ trigger level */ + + usc_TCmd( info, TCmd_SelectTicrIntLevel ); + + + /* Transmit Interrupt Control Register (TICR) + * + * <15..8> ? Transmit FIFO IRQ Level + * <7> 0 Present IA (Interrupt Arm) + * <6> 1 Idle Sent IA + * <5> 0 Abort Sent IA + * <4> 0 EOF/EOM Sent IA + * <3> 0 CRC Sent IA + * <2> 0 1 = Wait for SW Trigger to Start Frame + * <1> 0 Tx Underrun IA + * <0> 0 TC0 constant on read back + * + * 0000 0000 0100 0000 = 0x0040 + */ + + usc_OutReg( info, TICR, 0x1f40 ); + + usc_UnlatchTxstatusBits( info, TXSTATUS_ALL ); + usc_ClearIrqPendingBits( info, TRANSMIT_STATUS ); + + usc_enable_async_clock( info, info->params.data_rate ); + + + /* Channel Control/status Register (CCSR) + * + * <15> X RCC FIFO Overflow status (RO) + * <14> X RCC FIFO Not Empty status (RO) + * <13> 0 1 = Clear RCC FIFO (WO) + * <12> X DPLL in Sync status (RO) + * <11> X DPLL 2 Missed Clocks status (RO) + * <10> X DPLL 1 Missed Clock status (RO) + * <9..8> 00 DPLL Resync on rising and falling edges (RW) + * <7> X SDLC Loop On status (RO) + * <6> X SDLC Loop Send status (RO) + * <5> 1 Bypass counters for TxClk and RxClk (RW) + * <4..2> 000 Last Char of SDLC frame has 8 bits (RW) + * <1..0> 00 reserved + * + * 0000 0000 0010 0000 = 0x0020 + */ + + usc_OutReg( info, CCSR, 0x0020 ); + + usc_DisableInterrupts( info, TRANSMIT_STATUS + TRANSMIT_DATA + + RECEIVE_DATA + RECEIVE_STATUS ); + + usc_ClearIrqPendingBits( info, TRANSMIT_STATUS + TRANSMIT_DATA + + RECEIVE_DATA + RECEIVE_STATUS ); + + usc_EnableMasterIrqBit( info ); + + if (info->bus_type == MGSL_BUS_TYPE_ISA) { + /* Enable INTEN (Port 6, Bit12) */ + /* This connects the IRQ request signal to the ISA bus */ + usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12)); + } + + if (info->params.loopback) { + info->loopback_bits = 0x300; + outw(0x0300, info->io_base + CCAR); + } + +} /* end of usc_set_async_mode() */ + +/* usc_loopback_frame() + * + * Loop back a small (2 byte) dummy SDLC frame. + * Interrupts and DMA are NOT used. The purpose of this is to + * clear any 'stale' status info left over from running in async mode. + * + * The 16C32 shows the strange behaviour of marking the 1st + * received SDLC frame with a CRC error even when there is no + * CRC error. To get around this a small dummy from of 2 bytes + * is looped back when switching from async to sync mode. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_loopback_frame( struct mgsl_struct *info ) +{ + int i; + unsigned long oldmode = info->params.mode; + + info->params.mode = MGSL_MODE_HDLC; + + usc_DisableMasterIrqBit( info ); + + usc_set_sdlc_mode( info ); + usc_enable_loopback( info, 1 ); + + /* Write 16-bit Time Constant for BRG0 */ + usc_OutReg( info, TC0R, 0 ); + + /* Channel Control Register (CCR) + * + * <15..14> 00 Don't use 32-bit Tx Control Blocks (TCBs) + * <13> 0 Trigger Tx on SW Command Disabled + * <12> 0 Flag Preamble Disabled + * <11..10> 00 Preamble Length = 8-Bits + * <9..8> 01 Preamble Pattern = flags + * <7..6> 10 Don't use 32-bit Rx status Blocks (RSBs) + * <5> 0 Trigger Rx on SW Command Disabled + * <4..0> 0 reserved + * + * 0000 0001 0000 0000 = 0x0100 + */ + + usc_OutReg( info, CCR, 0x0100 ); + + /* SETUP RECEIVER */ + usc_RTCmd( info, RTCmd_PurgeRxFifo ); + usc_EnableReceiver(info,ENABLE_UNCONDITIONAL); + + /* SETUP TRANSMITTER */ + /* Program the Transmit Character Length Register (TCLR) */ + /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */ + usc_OutReg( info, TCLR, 2 ); + usc_RTCmd( info, RTCmd_PurgeTxFifo ); + + /* unlatch Tx status bits, and start transmit channel. */ + usc_UnlatchTxstatusBits(info,TXSTATUS_ALL); + outw(0,info->io_base + DATAREG); + + /* ENABLE TRANSMITTER */ + usc_TCmd( info, TCmd_SendFrame ); + usc_EnableTransmitter(info,ENABLE_UNCONDITIONAL); + + /* WAIT FOR RECEIVE COMPLETE */ + for (i=0 ; i<1000 ; i++) + if (usc_InReg( info, RCSR ) & (BIT8 + BIT4 + BIT3 + BIT1)) + break; + + /* clear Internal Data loopback mode */ + usc_enable_loopback(info, 0); + + usc_EnableMasterIrqBit(info); + + info->params.mode = oldmode; + +} /* end of usc_loopback_frame() */ + +/* usc_set_sync_mode() Programs the USC for SDLC communications. + * + * Arguments: info pointer to adapter info structure + * Return Value: None + */ +static void usc_set_sync_mode( struct mgsl_struct *info ) +{ + usc_loopback_frame( info ); + usc_set_sdlc_mode( info ); + + if (info->bus_type == MGSL_BUS_TYPE_ISA) { + /* Enable INTEN (Port 6, Bit12) */ + /* This connects the IRQ request signal to the ISA bus */ + usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12)); + } + + usc_enable_aux_clock(info, info->params.clock_speed); + + if (info->params.loopback) + usc_enable_loopback(info,1); + +} /* end of mgsl_set_sync_mode() */ + +/* usc_set_txidle() Set the HDLC idle mode for the transmitter. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_set_txidle( struct mgsl_struct *info ) +{ + u16 usc_idle_mode = IDLEMODE_FLAGS; + + /* Map API idle mode to USC register bits */ + + switch( info->idle_mode ){ + case HDLC_TXIDLE_FLAGS: usc_idle_mode = IDLEMODE_FLAGS; break; + case HDLC_TXIDLE_ALT_ZEROS_ONES: usc_idle_mode = IDLEMODE_ALT_ONE_ZERO; break; + case HDLC_TXIDLE_ZEROS: usc_idle_mode = IDLEMODE_ZERO; break; + case HDLC_TXIDLE_ONES: usc_idle_mode = IDLEMODE_ONE; break; + case HDLC_TXIDLE_ALT_MARK_SPACE: usc_idle_mode = IDLEMODE_ALT_MARK_SPACE; break; + case HDLC_TXIDLE_SPACE: usc_idle_mode = IDLEMODE_SPACE; break; + case HDLC_TXIDLE_MARK: usc_idle_mode = IDLEMODE_MARK; break; + } + + info->usc_idle_mode = usc_idle_mode; + //usc_OutReg(info, TCSR, usc_idle_mode); + info->tcsr_value &= ~IDLEMODE_MASK; /* clear idle mode bits */ + info->tcsr_value += usc_idle_mode; + usc_OutReg(info, TCSR, info->tcsr_value); + + /* + * if SyncLink WAN adapter is running in external sync mode, the + * transmitter has been set to Monosync in order to try to mimic + * a true raw outbound bit stream. Monosync still sends an open/close + * sync char at the start/end of a frame. Try to match those sync + * patterns to the idle mode set here + */ + if ( info->params.mode == MGSL_MODE_RAW ) { + unsigned char syncpat = 0; + switch( info->idle_mode ) { + case HDLC_TXIDLE_FLAGS: + syncpat = 0x7e; + break; + case HDLC_TXIDLE_ALT_ZEROS_ONES: + syncpat = 0x55; + break; + case HDLC_TXIDLE_ZEROS: + case HDLC_TXIDLE_SPACE: + syncpat = 0x00; + break; + case HDLC_TXIDLE_ONES: + case HDLC_TXIDLE_MARK: + syncpat = 0xff; + break; + case HDLC_TXIDLE_ALT_MARK_SPACE: + syncpat = 0xaa; + break; + } + + usc_SetTransmitSyncChars(info,syncpat,syncpat); + } + +} /* end of usc_set_txidle() */ + +/* usc_get_serial_signals() + * + * Query the adapter for the state of the V24 status (input) signals. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_get_serial_signals( struct mgsl_struct *info ) +{ + u16 status; + + /* clear all serial signals except DTR and RTS */ + info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; + + /* Read the Misc Interrupt status Register (MISR) to get */ + /* the V24 status signals. */ + + status = usc_InReg( info, MISR ); + + /* set serial signal bits to reflect MISR */ + + if ( status & MISCSTATUS_CTS ) + info->serial_signals |= SerialSignal_CTS; + + if ( status & MISCSTATUS_DCD ) + info->serial_signals |= SerialSignal_DCD; + + if ( status & MISCSTATUS_RI ) + info->serial_signals |= SerialSignal_RI; + + if ( status & MISCSTATUS_DSR ) + info->serial_signals |= SerialSignal_DSR; + +} /* end of usc_get_serial_signals() */ + +/* usc_set_serial_signals() + * + * Set the state of DTR and RTS based on contents of + * serial_signals member of device extension. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void usc_set_serial_signals( struct mgsl_struct *info ) +{ + u16 Control; + unsigned char V24Out = info->serial_signals; + + /* get the current value of the Port Control Register (PCR) */ + + Control = usc_InReg( info, PCR ); + + if ( V24Out & SerialSignal_RTS ) + Control &= ~(BIT6); + else + Control |= BIT6; + + if ( V24Out & SerialSignal_DTR ) + Control &= ~(BIT4); + else + Control |= BIT4; + + usc_OutReg( info, PCR, Control ); + +} /* end of usc_set_serial_signals() */ + +/* usc_enable_async_clock() + * + * Enable the async clock at the specified frequency. + * + * Arguments: info pointer to device instance data + * data_rate data rate of clock in bps + * 0 disables the AUX clock. + * Return Value: None + */ +static void usc_enable_async_clock( struct mgsl_struct *info, u32 data_rate ) +{ + if ( data_rate ) { + /* + * Clock mode Control Register (CMCR) + * + * <15..14> 00 counter 1 Disabled + * <13..12> 00 counter 0 Disabled + * <11..10> 11 BRG1 Input is TxC Pin + * <9..8> 11 BRG0 Input is TxC Pin + * <7..6> 01 DPLL Input is BRG1 Output + * <5..3> 100 TxCLK comes from BRG0 + * <2..0> 100 RxCLK comes from BRG0 + * + * 0000 1111 0110 0100 = 0x0f64 + */ + + usc_OutReg( info, CMCR, 0x0f64 ); + + + /* + * Write 16-bit Time Constant for BRG0 + * Time Constant = (ClkSpeed / data_rate) - 1 + * ClkSpeed = 921600 (ISA), 691200 (PCI) + */ + + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + usc_OutReg( info, TC0R, (u16)((691200/data_rate) - 1) ); + else + usc_OutReg( info, TC0R, (u16)((921600/data_rate) - 1) ); + + + /* + * Hardware Configuration Register (HCR) + * Clear Bit 1, BRG0 mode = Continuous + * Set Bit 0 to enable BRG0. + */ + + usc_OutReg( info, HCR, + (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) ); + + + /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */ + + usc_OutReg( info, IOCR, + (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004) ); + } else { + /* data rate == 0 so turn off BRG0 */ + usc_OutReg( info, HCR, (u16)(usc_InReg( info, HCR ) & ~BIT0) ); + } + +} /* end of usc_enable_async_clock() */ + +/* + * Buffer Structures: + * + * Normal memory access uses virtual addresses that can make discontiguous + * physical memory pages appear to be contiguous in the virtual address + * space (the processors memory mapping handles the conversions). + * + * DMA transfers require physically contiguous memory. This is because + * the DMA system controller and DMA bus masters deal with memory using + * only physical addresses. + * + * This causes a problem under Windows NT when large DMA buffers are + * needed. Fragmentation of the nonpaged pool prevents allocations of + * physically contiguous buffers larger than the PAGE_SIZE. + * + * However the 16C32 supports Bus Master Scatter/Gather DMA which + * allows DMA transfers to physically discontiguous buffers. Information + * about each data transfer buffer is contained in a memory structure + * called a 'buffer entry'. A list of buffer entries is maintained + * to track and control the use of the data transfer buffers. + * + * To support this strategy we will allocate sufficient PAGE_SIZE + * contiguous memory buffers to allow for the total required buffer + * space. + * + * The 16C32 accesses the list of buffer entries using Bus Master + * DMA. Control information is read from the buffer entries by the + * 16C32 to control data transfers. status information is written to + * the buffer entries by the 16C32 to indicate the status of completed + * transfers. + * + * The CPU writes control information to the buffer entries to control + * the 16C32 and reads status information from the buffer entries to + * determine information about received and transmitted frames. + * + * Because the CPU and 16C32 (adapter) both need simultaneous access + * to the buffer entries, the buffer entry memory is allocated with + * HalAllocateCommonBuffer(). This restricts the size of the buffer + * entry list to PAGE_SIZE. + * + * The actual data buffers on the other hand will only be accessed + * by the CPU or the adapter but not by both simultaneously. This allows + * Scatter/Gather packet based DMA procedures for using physically + * discontiguous pages. + */ + +/* + * mgsl_reset_tx_dma_buffers() + * + * Set the count for all transmit buffers to 0 to indicate the + * buffer is available for use and set the current buffer to the + * first buffer. This effectively makes all buffers free and + * discards any data in buffers. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_reset_tx_dma_buffers( struct mgsl_struct *info ) +{ + unsigned int i; + + for ( i = 0; i < info->tx_buffer_count; i++ ) { + *((unsigned long *)&(info->tx_buffer_list[i].count)) = 0; + } + + info->current_tx_buffer = 0; + info->start_tx_dma_buffer = 0; + info->tx_dma_buffers_used = 0; + + info->get_tx_holding_index = 0; + info->put_tx_holding_index = 0; + info->tx_holding_count = 0; + +} /* end of mgsl_reset_tx_dma_buffers() */ + +/* + * num_free_tx_dma_buffers() + * + * returns the number of free tx dma buffers available + * + * Arguments: info pointer to device instance data + * Return Value: number of free tx dma buffers + */ +static int num_free_tx_dma_buffers(struct mgsl_struct *info) +{ + return info->tx_buffer_count - info->tx_dma_buffers_used; +} + +/* + * mgsl_reset_rx_dma_buffers() + * + * Set the count for all receive buffers to DMABUFFERSIZE + * and set the current buffer to the first buffer. This effectively + * makes all buffers free and discards any data in buffers. + * + * Arguments: info pointer to device instance data + * Return Value: None + */ +static void mgsl_reset_rx_dma_buffers( struct mgsl_struct *info ) +{ + unsigned int i; + + for ( i = 0; i < info->rx_buffer_count; i++ ) { + *((unsigned long *)&(info->rx_buffer_list[i].count)) = DMABUFFERSIZE; +// info->rx_buffer_list[i].count = DMABUFFERSIZE; +// info->rx_buffer_list[i].status = 0; + } + + info->current_rx_buffer = 0; + +} /* end of mgsl_reset_rx_dma_buffers() */ + +/* + * mgsl_free_rx_frame_buffers() + * + * Free the receive buffers used by a received SDLC + * frame such that the buffers can be reused. + * + * Arguments: + * + * info pointer to device instance data + * StartIndex index of 1st receive buffer of frame + * EndIndex index of last receive buffer of frame + * + * Return Value: None + */ +static void mgsl_free_rx_frame_buffers( struct mgsl_struct *info, unsigned int StartIndex, unsigned int EndIndex ) +{ + bool Done = false; + DMABUFFERENTRY *pBufEntry; + unsigned int Index; + + /* Starting with 1st buffer entry of the frame clear the status */ + /* field and set the count field to DMA Buffer Size. */ + + Index = StartIndex; + + while( !Done ) { + pBufEntry = &(info->rx_buffer_list[Index]); + + if ( Index == EndIndex ) { + /* This is the last buffer of the frame! */ + Done = true; + } + + /* reset current buffer for reuse */ +// pBufEntry->status = 0; +// pBufEntry->count = DMABUFFERSIZE; + *((unsigned long *)&(pBufEntry->count)) = DMABUFFERSIZE; + + /* advance to next buffer entry in linked list */ + Index++; + if ( Index == info->rx_buffer_count ) + Index = 0; + } + + /* set current buffer to next buffer after last buffer of frame */ + info->current_rx_buffer = Index; + +} /* end of free_rx_frame_buffers() */ + +/* mgsl_get_rx_frame() + * + * This function attempts to return a received SDLC frame from the + * receive DMA buffers. Only frames received without errors are returned. + * + * Arguments: info pointer to device extension + * Return Value: true if frame returned, otherwise false + */ +static bool mgsl_get_rx_frame(struct mgsl_struct *info) +{ + unsigned int StartIndex, EndIndex; /* index of 1st and last buffers of Rx frame */ + unsigned short status; + DMABUFFERENTRY *pBufEntry; + unsigned int framesize = 0; + bool ReturnCode = false; + unsigned long flags; + struct tty_struct *tty = info->port.tty; + bool return_frame = false; + + /* + * current_rx_buffer points to the 1st buffer of the next available + * receive frame. To find the last buffer of the frame look for + * a non-zero status field in the buffer entries. (The status + * field is set by the 16C32 after completing a receive frame. + */ + + StartIndex = EndIndex = info->current_rx_buffer; + + while( !info->rx_buffer_list[EndIndex].status ) { + /* + * If the count field of the buffer entry is non-zero then + * this buffer has not been used. (The 16C32 clears the count + * field when it starts using the buffer.) If an unused buffer + * is encountered then there are no frames available. + */ + + if ( info->rx_buffer_list[EndIndex].count ) + goto Cleanup; + + /* advance to next buffer entry in linked list */ + EndIndex++; + if ( EndIndex == info->rx_buffer_count ) + EndIndex = 0; + + /* if entire list searched then no frame available */ + if ( EndIndex == StartIndex ) { + /* If this occurs then something bad happened, + * all buffers have been 'used' but none mark + * the end of a frame. Reset buffers and receiver. + */ + + if ( info->rx_enabled ){ + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_start_receiver(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } + goto Cleanup; + } + } + + + /* check status of receive frame */ + + status = info->rx_buffer_list[EndIndex].status; + + if ( status & (RXSTATUS_SHORT_FRAME + RXSTATUS_OVERRUN + + RXSTATUS_CRC_ERROR + RXSTATUS_ABORT) ) { + if ( status & RXSTATUS_SHORT_FRAME ) + info->icount.rxshort++; + else if ( status & RXSTATUS_ABORT ) + info->icount.rxabort++; + else if ( status & RXSTATUS_OVERRUN ) + info->icount.rxover++; + else { + info->icount.rxcrc++; + if ( info->params.crc_type & HDLC_CRC_RETURN_EX ) + return_frame = true; + } + framesize = 0; +#if SYNCLINK_GENERIC_HDLC + { + info->netdev->stats.rx_errors++; + info->netdev->stats.rx_frame_errors++; + } +#endif + } else + return_frame = true; + + if ( return_frame ) { + /* receive frame has no errors, get frame size. + * The frame size is the starting value of the RCC (which was + * set to 0xffff) minus the ending value of the RCC (decremented + * once for each receive character) minus 2 for the 16-bit CRC. + */ + + framesize = RCLRVALUE - info->rx_buffer_list[EndIndex].rcc; + + /* adjust frame size for CRC if any */ + if ( info->params.crc_type == HDLC_CRC_16_CCITT ) + framesize -= 2; + else if ( info->params.crc_type == HDLC_CRC_32_CCITT ) + framesize -= 4; + } + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk("%s(%d):mgsl_get_rx_frame(%s) status=%04X size=%d\n", + __FILE__,__LINE__,info->device_name,status,framesize); + + if ( debug_level >= DEBUG_LEVEL_DATA ) + mgsl_trace_block(info,info->rx_buffer_list[StartIndex].virt_addr, + min_t(int, framesize, DMABUFFERSIZE),0); + + if (framesize) { + if ( ( (info->params.crc_type & HDLC_CRC_RETURN_EX) && + ((framesize+1) > info->max_frame_size) ) || + (framesize > info->max_frame_size) ) + info->icount.rxlong++; + else { + /* copy dma buffer(s) to contiguous intermediate buffer */ + int copy_count = framesize; + int index = StartIndex; + unsigned char *ptmp = info->intermediate_rxbuffer; + + if ( !(status & RXSTATUS_CRC_ERROR)) + info->icount.rxok++; + + while(copy_count) { + int partial_count; + if ( copy_count > DMABUFFERSIZE ) + partial_count = DMABUFFERSIZE; + else + partial_count = copy_count; + + pBufEntry = &(info->rx_buffer_list[index]); + memcpy( ptmp, pBufEntry->virt_addr, partial_count ); + ptmp += partial_count; + copy_count -= partial_count; + + if ( ++index == info->rx_buffer_count ) + index = 0; + } + + if ( info->params.crc_type & HDLC_CRC_RETURN_EX ) { + ++framesize; + *ptmp = (status & RXSTATUS_CRC_ERROR ? + RX_CRC_ERROR : + RX_OK); + + if ( debug_level >= DEBUG_LEVEL_DATA ) + printk("%s(%d):mgsl_get_rx_frame(%s) rx frame status=%d\n", + __FILE__,__LINE__,info->device_name, + *ptmp); + } + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_rx(info,info->intermediate_rxbuffer,framesize); + else +#endif + ldisc_receive_buf(tty, info->intermediate_rxbuffer, info->flag_buf, framesize); + } + } + /* Free the buffers used by this frame. */ + mgsl_free_rx_frame_buffers( info, StartIndex, EndIndex ); + + ReturnCode = true; + +Cleanup: + + if ( info->rx_enabled && info->rx_overflow ) { + /* The receiver needs to restarted because of + * a receive overflow (buffer or FIFO). If the + * receive buffers are now empty, then restart receiver. + */ + + if ( !info->rx_buffer_list[EndIndex].status && + info->rx_buffer_list[EndIndex].count ) { + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_start_receiver(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } + } + + return ReturnCode; + +} /* end of mgsl_get_rx_frame() */ + +/* mgsl_get_raw_rx_frame() + * + * This function attempts to return a received frame from the + * receive DMA buffers when running in external loop mode. In this mode, + * we will return at most one DMABUFFERSIZE frame to the application. + * The USC receiver is triggering off of DCD going active to start a new + * frame, and DCD going inactive to terminate the frame (similar to + * processing a closing flag character). + * + * In this routine, we will return DMABUFFERSIZE "chunks" at a time. + * If DCD goes inactive, the last Rx DMA Buffer will have a non-zero + * status field and the RCC field will indicate the length of the + * entire received frame. We take this RCC field and get the modulus + * of RCC and DMABUFFERSIZE to determine if number of bytes in the + * last Rx DMA buffer and return that last portion of the frame. + * + * Arguments: info pointer to device extension + * Return Value: true if frame returned, otherwise false + */ +static bool mgsl_get_raw_rx_frame(struct mgsl_struct *info) +{ + unsigned int CurrentIndex, NextIndex; + unsigned short status; + DMABUFFERENTRY *pBufEntry; + unsigned int framesize = 0; + bool ReturnCode = false; + unsigned long flags; + struct tty_struct *tty = info->port.tty; + + /* + * current_rx_buffer points to the 1st buffer of the next available + * receive frame. The status field is set by the 16C32 after + * completing a receive frame. If the status field of this buffer + * is zero, either the USC is still filling this buffer or this + * is one of a series of buffers making up a received frame. + * + * If the count field of this buffer is zero, the USC is either + * using this buffer or has used this buffer. Look at the count + * field of the next buffer. If that next buffer's count is + * non-zero, the USC is still actively using the current buffer. + * Otherwise, if the next buffer's count field is zero, the + * current buffer is complete and the USC is using the next + * buffer. + */ + CurrentIndex = NextIndex = info->current_rx_buffer; + ++NextIndex; + if ( NextIndex == info->rx_buffer_count ) + NextIndex = 0; + + if ( info->rx_buffer_list[CurrentIndex].status != 0 || + (info->rx_buffer_list[CurrentIndex].count == 0 && + info->rx_buffer_list[NextIndex].count == 0)) { + /* + * Either the status field of this dma buffer is non-zero + * (indicating the last buffer of a receive frame) or the next + * buffer is marked as in use -- implying this buffer is complete + * and an intermediate buffer for this received frame. + */ + + status = info->rx_buffer_list[CurrentIndex].status; + + if ( status & (RXSTATUS_SHORT_FRAME + RXSTATUS_OVERRUN + + RXSTATUS_CRC_ERROR + RXSTATUS_ABORT) ) { + if ( status & RXSTATUS_SHORT_FRAME ) + info->icount.rxshort++; + else if ( status & RXSTATUS_ABORT ) + info->icount.rxabort++; + else if ( status & RXSTATUS_OVERRUN ) + info->icount.rxover++; + else + info->icount.rxcrc++; + framesize = 0; + } else { + /* + * A receive frame is available, get frame size and status. + * + * The frame size is the starting value of the RCC (which was + * set to 0xffff) minus the ending value of the RCC (decremented + * once for each receive character) minus 2 or 4 for the 16-bit + * or 32-bit CRC. + * + * If the status field is zero, this is an intermediate buffer. + * It's size is 4K. + * + * If the DMA Buffer Entry's Status field is non-zero, the + * receive operation completed normally (ie: DCD dropped). The + * RCC field is valid and holds the received frame size. + * It is possible that the RCC field will be zero on a DMA buffer + * entry with a non-zero status. This can occur if the total + * frame size (number of bytes between the time DCD goes active + * to the time DCD goes inactive) exceeds 65535 bytes. In this + * case the 16C32 has underrun on the RCC count and appears to + * stop updating this counter to let us know the actual received + * frame size. If this happens (non-zero status and zero RCC), + * simply return the entire RxDMA Buffer + */ + if ( status ) { + /* + * In the event that the final RxDMA Buffer is + * terminated with a non-zero status and the RCC + * field is zero, we interpret this as the RCC + * having underflowed (received frame > 65535 bytes). + * + * Signal the event to the user by passing back + * a status of RxStatus_CrcError returning the full + * buffer and let the app figure out what data is + * actually valid + */ + if ( info->rx_buffer_list[CurrentIndex].rcc ) + framesize = RCLRVALUE - info->rx_buffer_list[CurrentIndex].rcc; + else + framesize = DMABUFFERSIZE; + } + else + framesize = DMABUFFERSIZE; + } + + if ( framesize > DMABUFFERSIZE ) { + /* + * if running in raw sync mode, ISR handler for + * End Of Buffer events terminates all buffers at 4K. + * If this frame size is said to be >4K, get the + * actual number of bytes of the frame in this buffer. + */ + framesize = framesize % DMABUFFERSIZE; + } + + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk("%s(%d):mgsl_get_raw_rx_frame(%s) status=%04X size=%d\n", + __FILE__,__LINE__,info->device_name,status,framesize); + + if ( debug_level >= DEBUG_LEVEL_DATA ) + mgsl_trace_block(info,info->rx_buffer_list[CurrentIndex].virt_addr, + min_t(int, framesize, DMABUFFERSIZE),0); + + if (framesize) { + /* copy dma buffer(s) to contiguous intermediate buffer */ + /* NOTE: we never copy more than DMABUFFERSIZE bytes */ + + pBufEntry = &(info->rx_buffer_list[CurrentIndex]); + memcpy( info->intermediate_rxbuffer, pBufEntry->virt_addr, framesize); + info->icount.rxok++; + + ldisc_receive_buf(tty, info->intermediate_rxbuffer, info->flag_buf, framesize); + } + + /* Free the buffers used by this frame. */ + mgsl_free_rx_frame_buffers( info, CurrentIndex, CurrentIndex ); + + ReturnCode = true; + } + + + if ( info->rx_enabled && info->rx_overflow ) { + /* The receiver needs to restarted because of + * a receive overflow (buffer or FIFO). If the + * receive buffers are now empty, then restart receiver. + */ + + if ( !info->rx_buffer_list[CurrentIndex].status && + info->rx_buffer_list[CurrentIndex].count ) { + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_start_receiver(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } + } + + return ReturnCode; + +} /* end of mgsl_get_raw_rx_frame() */ + +/* mgsl_load_tx_dma_buffer() + * + * Load the transmit DMA buffer with the specified data. + * + * Arguments: + * + * info pointer to device extension + * Buffer pointer to buffer containing frame to load + * BufferSize size in bytes of frame in Buffer + * + * Return Value: None + */ +static void mgsl_load_tx_dma_buffer(struct mgsl_struct *info, + const char *Buffer, unsigned int BufferSize) +{ + unsigned short Copycount; + unsigned int i = 0; + DMABUFFERENTRY *pBufEntry; + + if ( debug_level >= DEBUG_LEVEL_DATA ) + mgsl_trace_block(info,Buffer, min_t(int, BufferSize, DMABUFFERSIZE), 1); + + if (info->params.flags & HDLC_FLAG_HDLC_LOOPMODE) { + /* set CMR:13 to start transmit when + * next GoAhead (abort) is received + */ + info->cmr_value |= BIT13; + } + + /* begin loading the frame in the next available tx dma + * buffer, remember it's starting location for setting + * up tx dma operation + */ + i = info->current_tx_buffer; + info->start_tx_dma_buffer = i; + + /* Setup the status and RCC (Frame Size) fields of the 1st */ + /* buffer entry in the transmit DMA buffer list. */ + + info->tx_buffer_list[i].status = info->cmr_value & 0xf000; + info->tx_buffer_list[i].rcc = BufferSize; + info->tx_buffer_list[i].count = BufferSize; + + /* Copy frame data from 1st source buffer to the DMA buffers. */ + /* The frame data may span multiple DMA buffers. */ + + while( BufferSize ){ + /* Get a pointer to next DMA buffer entry. */ + pBufEntry = &info->tx_buffer_list[i++]; + + if ( i == info->tx_buffer_count ) + i=0; + + /* Calculate the number of bytes that can be copied from */ + /* the source buffer to this DMA buffer. */ + if ( BufferSize > DMABUFFERSIZE ) + Copycount = DMABUFFERSIZE; + else + Copycount = BufferSize; + + /* Actually copy data from source buffer to DMA buffer. */ + /* Also set the data count for this individual DMA buffer. */ + if ( info->bus_type == MGSL_BUS_TYPE_PCI ) + mgsl_load_pci_memory(pBufEntry->virt_addr, Buffer,Copycount); + else + memcpy(pBufEntry->virt_addr, Buffer, Copycount); + + pBufEntry->count = Copycount; + + /* Advance source pointer and reduce remaining data count. */ + Buffer += Copycount; + BufferSize -= Copycount; + + ++info->tx_dma_buffers_used; + } + + /* remember next available tx dma buffer */ + info->current_tx_buffer = i; + +} /* end of mgsl_load_tx_dma_buffer() */ + +/* + * mgsl_register_test() + * + * Performs a register test of the 16C32. + * + * Arguments: info pointer to device instance data + * Return Value: true if test passed, otherwise false + */ +static bool mgsl_register_test( struct mgsl_struct *info ) +{ + static unsigned short BitPatterns[] = + { 0x0000, 0xffff, 0xaaaa, 0x5555, 0x1234, 0x6969, 0x9696, 0x0f0f }; + static unsigned int Patterncount = ARRAY_SIZE(BitPatterns); + unsigned int i; + bool rc = true; + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_reset(info); + + /* Verify the reset state of some registers. */ + + if ( (usc_InReg( info, SICR ) != 0) || + (usc_InReg( info, IVR ) != 0) || + (usc_InDmaReg( info, DIVR ) != 0) ){ + rc = false; + } + + if ( rc ){ + /* Write bit patterns to various registers but do it out of */ + /* sync, then read back and verify values. */ + + for ( i = 0 ; i < Patterncount ; i++ ) { + usc_OutReg( info, TC0R, BitPatterns[i] ); + usc_OutReg( info, TC1R, BitPatterns[(i+1)%Patterncount] ); + usc_OutReg( info, TCLR, BitPatterns[(i+2)%Patterncount] ); + usc_OutReg( info, RCLR, BitPatterns[(i+3)%Patterncount] ); + usc_OutReg( info, RSR, BitPatterns[(i+4)%Patterncount] ); + usc_OutDmaReg( info, TBCR, BitPatterns[(i+5)%Patterncount] ); + + if ( (usc_InReg( info, TC0R ) != BitPatterns[i]) || + (usc_InReg( info, TC1R ) != BitPatterns[(i+1)%Patterncount]) || + (usc_InReg( info, TCLR ) != BitPatterns[(i+2)%Patterncount]) || + (usc_InReg( info, RCLR ) != BitPatterns[(i+3)%Patterncount]) || + (usc_InReg( info, RSR ) != BitPatterns[(i+4)%Patterncount]) || + (usc_InDmaReg( info, TBCR ) != BitPatterns[(i+5)%Patterncount]) ){ + rc = false; + break; + } + } + } + + usc_reset(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + return rc; + +} /* end of mgsl_register_test() */ + +/* mgsl_irq_test() Perform interrupt test of the 16C32. + * + * Arguments: info pointer to device instance data + * Return Value: true if test passed, otherwise false + */ +static bool mgsl_irq_test( struct mgsl_struct *info ) +{ + unsigned long EndTime; + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_reset(info); + + /* + * Setup 16C32 to interrupt on TxC pin (14MHz clock) transition. + * The ISR sets irq_occurred to true. + */ + + info->irq_occurred = false; + + /* Enable INTEN gate for ISA adapter (Port 6, Bit12) */ + /* Enable INTEN (Port 6, Bit12) */ + /* This connects the IRQ request signal to the ISA bus */ + /* on the ISA adapter. This has no effect for the PCI adapter */ + usc_OutReg( info, PCR, (unsigned short)((usc_InReg(info, PCR) | BIT13) & ~BIT12) ); + + usc_EnableMasterIrqBit(info); + usc_EnableInterrupts(info, IO_PIN); + usc_ClearIrqPendingBits(info, IO_PIN); + + usc_UnlatchIostatusBits(info, MISCSTATUS_TXC_LATCHED); + usc_EnableStatusIrqs(info, SICR_TXC_ACTIVE + SICR_TXC_INACTIVE); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + EndTime=100; + while( EndTime-- && !info->irq_occurred ) { + msleep_interruptible(10); + } + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_reset(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + return info->irq_occurred; + +} /* end of mgsl_irq_test() */ + +/* mgsl_dma_test() + * + * Perform a DMA test of the 16C32. A small frame is + * transmitted via DMA from a transmit buffer to a receive buffer + * using single buffer DMA mode. + * + * Arguments: info pointer to device instance data + * Return Value: true if test passed, otherwise false + */ +static bool mgsl_dma_test( struct mgsl_struct *info ) +{ + unsigned short FifoLevel; + unsigned long phys_addr; + unsigned int FrameSize; + unsigned int i; + char *TmpPtr; + bool rc = true; + unsigned short status=0; + unsigned long EndTime; + unsigned long flags; + MGSL_PARAMS tmp_params; + + /* save current port options */ + memcpy(&tmp_params,&info->params,sizeof(MGSL_PARAMS)); + /* load default port options */ + memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); + +#define TESTFRAMESIZE 40 + + spin_lock_irqsave(&info->irq_spinlock,flags); + + /* setup 16C32 for SDLC DMA transfer mode */ + + usc_reset(info); + usc_set_sdlc_mode(info); + usc_enable_loopback(info,1); + + /* Reprogram the RDMR so that the 16C32 does NOT clear the count + * field of the buffer entry after fetching buffer address. This + * way we can detect a DMA failure for a DMA read (which should be + * non-destructive to system memory) before we try and write to + * memory (where a failure could corrupt system memory). + */ + + /* Receive DMA mode Register (RDMR) + * + * <15..14> 11 DMA mode = Linked List Buffer mode + * <13> 1 RSBinA/L = store Rx status Block in List entry + * <12> 0 1 = Clear count of List Entry after fetching + * <11..10> 00 Address mode = Increment + * <9> 1 Terminate Buffer on RxBound + * <8> 0 Bus Width = 16bits + * <7..0> ? status Bits (write as 0s) + * + * 1110 0010 0000 0000 = 0xe200 + */ + + usc_OutDmaReg( info, RDMR, 0xe200 ); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + + /* SETUP TRANSMIT AND RECEIVE DMA BUFFERS */ + + FrameSize = TESTFRAMESIZE; + + /* setup 1st transmit buffer entry: */ + /* with frame size and transmit control word */ + + info->tx_buffer_list[0].count = FrameSize; + info->tx_buffer_list[0].rcc = FrameSize; + info->tx_buffer_list[0].status = 0x4000; + + /* build a transmit frame in 1st transmit DMA buffer */ + + TmpPtr = info->tx_buffer_list[0].virt_addr; + for (i = 0; i < FrameSize; i++ ) + *TmpPtr++ = i; + + /* setup 1st receive buffer entry: */ + /* clear status, set max receive buffer size */ + + info->rx_buffer_list[0].status = 0; + info->rx_buffer_list[0].count = FrameSize + 4; + + /* zero out the 1st receive buffer */ + + memset( info->rx_buffer_list[0].virt_addr, 0, FrameSize + 4 ); + + /* Set count field of next buffer entries to prevent */ + /* 16C32 from using buffers after the 1st one. */ + + info->tx_buffer_list[1].count = 0; + info->rx_buffer_list[1].count = 0; + + + /***************************/ + /* Program 16C32 receiver. */ + /***************************/ + + spin_lock_irqsave(&info->irq_spinlock,flags); + + /* setup DMA transfers */ + usc_RTCmd( info, RTCmd_PurgeRxFifo ); + + /* program 16C32 receiver with physical address of 1st DMA buffer entry */ + phys_addr = info->rx_buffer_list[0].phys_entry; + usc_OutDmaReg( info, NRARL, (unsigned short)phys_addr ); + usc_OutDmaReg( info, NRARU, (unsigned short)(phys_addr >> 16) ); + + /* Clear the Rx DMA status bits (read RDMR) and start channel */ + usc_InDmaReg( info, RDMR ); + usc_DmaCmd( info, DmaCmd_InitRxChannel ); + + /* Enable Receiver (RMR <1..0> = 10) */ + usc_OutReg( info, RMR, (unsigned short)((usc_InReg(info, RMR) & 0xfffc) | 0x0002) ); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + + /*************************************************************/ + /* WAIT FOR RECEIVER TO DMA ALL PARAMETERS FROM BUFFER ENTRY */ + /*************************************************************/ + + /* Wait 100ms for interrupt. */ + EndTime = jiffies + msecs_to_jiffies(100); + + for(;;) { + if (time_after(jiffies, EndTime)) { + rc = false; + break; + } + + spin_lock_irqsave(&info->irq_spinlock,flags); + status = usc_InDmaReg( info, RDMR ); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + if ( !(status & BIT4) && (status & BIT5) ) { + /* INITG (BIT 4) is inactive (no entry read in progress) AND */ + /* BUSY (BIT 5) is active (channel still active). */ + /* This means the buffer entry read has completed. */ + break; + } + } + + + /******************************/ + /* Program 16C32 transmitter. */ + /******************************/ + + spin_lock_irqsave(&info->irq_spinlock,flags); + + /* Program the Transmit Character Length Register (TCLR) */ + /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */ + + usc_OutReg( info, TCLR, (unsigned short)info->tx_buffer_list[0].count ); + usc_RTCmd( info, RTCmd_PurgeTxFifo ); + + /* Program the address of the 1st DMA Buffer Entry in linked list */ + + phys_addr = info->tx_buffer_list[0].phys_entry; + usc_OutDmaReg( info, NTARL, (unsigned short)phys_addr ); + usc_OutDmaReg( info, NTARU, (unsigned short)(phys_addr >> 16) ); + + /* unlatch Tx status bits, and start transmit channel. */ + + usc_OutReg( info, TCSR, (unsigned short)(( usc_InReg(info, TCSR) & 0x0f00) | 0xfa) ); + usc_DmaCmd( info, DmaCmd_InitTxChannel ); + + /* wait for DMA controller to fill transmit FIFO */ + + usc_TCmd( info, TCmd_SelectTicrTxFifostatus ); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + + /**********************************/ + /* WAIT FOR TRANSMIT FIFO TO FILL */ + /**********************************/ + + /* Wait 100ms */ + EndTime = jiffies + msecs_to_jiffies(100); + + for(;;) { + if (time_after(jiffies, EndTime)) { + rc = false; + break; + } + + spin_lock_irqsave(&info->irq_spinlock,flags); + FifoLevel = usc_InReg(info, TICR) >> 8; + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + if ( FifoLevel < 16 ) + break; + else + if ( FrameSize < 32 ) { + /* This frame is smaller than the entire transmit FIFO */ + /* so wait for the entire frame to be loaded. */ + if ( FifoLevel <= (32 - FrameSize) ) + break; + } + } + + + if ( rc ) + { + /* Enable 16C32 transmitter. */ + + spin_lock_irqsave(&info->irq_spinlock,flags); + + /* Transmit mode Register (TMR), <1..0> = 10, Enable Transmitter */ + usc_TCmd( info, TCmd_SendFrame ); + usc_OutReg( info, TMR, (unsigned short)((usc_InReg(info, TMR) & 0xfffc) | 0x0002) ); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + + /******************************/ + /* WAIT FOR TRANSMIT COMPLETE */ + /******************************/ + + /* Wait 100ms */ + EndTime = jiffies + msecs_to_jiffies(100); + + /* While timer not expired wait for transmit complete */ + + spin_lock_irqsave(&info->irq_spinlock,flags); + status = usc_InReg( info, TCSR ); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + while ( !(status & (BIT6+BIT5+BIT4+BIT2+BIT1)) ) { + if (time_after(jiffies, EndTime)) { + rc = false; + break; + } + + spin_lock_irqsave(&info->irq_spinlock,flags); + status = usc_InReg( info, TCSR ); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + } + } + + + if ( rc ){ + /* CHECK FOR TRANSMIT ERRORS */ + if ( status & (BIT5 + BIT1) ) + rc = false; + } + + if ( rc ) { + /* WAIT FOR RECEIVE COMPLETE */ + + /* Wait 100ms */ + EndTime = jiffies + msecs_to_jiffies(100); + + /* Wait for 16C32 to write receive status to buffer entry. */ + status=info->rx_buffer_list[0].status; + while ( status == 0 ) { + if (time_after(jiffies, EndTime)) { + rc = false; + break; + } + status=info->rx_buffer_list[0].status; + } + } + + + if ( rc ) { + /* CHECK FOR RECEIVE ERRORS */ + status = info->rx_buffer_list[0].status; + + if ( status & (BIT8 + BIT3 + BIT1) ) { + /* receive error has occurred */ + rc = false; + } else { + if ( memcmp( info->tx_buffer_list[0].virt_addr , + info->rx_buffer_list[0].virt_addr, FrameSize ) ){ + rc = false; + } + } + } + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_reset( info ); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + /* restore current port options */ + memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); + + return rc; + +} /* end of mgsl_dma_test() */ + +/* mgsl_adapter_test() + * + * Perform the register, IRQ, and DMA tests for the 16C32. + * + * Arguments: info pointer to device instance data + * Return Value: 0 if success, otherwise -ENODEV + */ +static int mgsl_adapter_test( struct mgsl_struct *info ) +{ + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):Testing device %s\n", + __FILE__,__LINE__,info->device_name ); + + if ( !mgsl_register_test( info ) ) { + info->init_error = DiagStatus_AddressFailure; + printk( "%s(%d):Register test failure for device %s Addr=%04X\n", + __FILE__,__LINE__,info->device_name, (unsigned short)(info->io_base) ); + return -ENODEV; + } + + if ( !mgsl_irq_test( info ) ) { + info->init_error = DiagStatus_IrqFailure; + printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", + __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); + return -ENODEV; + } + + if ( !mgsl_dma_test( info ) ) { + info->init_error = DiagStatus_DmaFailure; + printk( "%s(%d):DMA test failure for device %s DMA=%d\n", + __FILE__,__LINE__,info->device_name, (unsigned short)(info->dma_level) ); + return -ENODEV; + } + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):device %s passed diagnostics\n", + __FILE__,__LINE__,info->device_name ); + + return 0; + +} /* end of mgsl_adapter_test() */ + +/* mgsl_memory_test() + * + * Test the shared memory on a PCI adapter. + * + * Arguments: info pointer to device instance data + * Return Value: true if test passed, otherwise false + */ +static bool mgsl_memory_test( struct mgsl_struct *info ) +{ + static unsigned long BitPatterns[] = + { 0x0, 0x55555555, 0xaaaaaaaa, 0x66666666, 0x99999999, 0xffffffff, 0x12345678 }; + unsigned long Patterncount = ARRAY_SIZE(BitPatterns); + unsigned long i; + unsigned long TestLimit = SHARED_MEM_ADDRESS_SIZE/sizeof(unsigned long); + unsigned long * TestAddr; + + if ( info->bus_type != MGSL_BUS_TYPE_PCI ) + return true; + + TestAddr = (unsigned long *)info->memory_base; + + /* Test data lines with test pattern at one location. */ + + for ( i = 0 ; i < Patterncount ; i++ ) { + *TestAddr = BitPatterns[i]; + if ( *TestAddr != BitPatterns[i] ) + return false; + } + + /* Test address lines with incrementing pattern over */ + /* entire address range. */ + + for ( i = 0 ; i < TestLimit ; i++ ) { + *TestAddr = i * 4; + TestAddr++; + } + + TestAddr = (unsigned long *)info->memory_base; + + for ( i = 0 ; i < TestLimit ; i++ ) { + if ( *TestAddr != i * 4 ) + return false; + TestAddr++; + } + + memset( info->memory_base, 0, SHARED_MEM_ADDRESS_SIZE ); + + return true; + +} /* End Of mgsl_memory_test() */ + + +/* mgsl_load_pci_memory() + * + * Load a large block of data into the PCI shared memory. + * Use this instead of memcpy() or memmove() to move data + * into the PCI shared memory. + * + * Notes: + * + * This function prevents the PCI9050 interface chip from hogging + * the adapter local bus, which can starve the 16C32 by preventing + * 16C32 bus master cycles. + * + * The PCI9050 documentation says that the 9050 will always release + * control of the local bus after completing the current read + * or write operation. + * + * It appears that as long as the PCI9050 write FIFO is full, the + * PCI9050 treats all of the writes as a single burst transaction + * and will not release the bus. This causes DMA latency problems + * at high speeds when copying large data blocks to the shared + * memory. + * + * This function in effect, breaks the a large shared memory write + * into multiple transations by interleaving a shared memory read + * which will flush the write FIFO and 'complete' the write + * transation. This allows any pending DMA request to gain control + * of the local bus in a timely fasion. + * + * Arguments: + * + * TargetPtr pointer to target address in PCI shared memory + * SourcePtr pointer to source buffer for data + * count count in bytes of data to copy + * + * Return Value: None + */ +static void mgsl_load_pci_memory( char* TargetPtr, const char* SourcePtr, + unsigned short count ) +{ + /* 16 32-bit writes @ 60ns each = 960ns max latency on local bus */ +#define PCI_LOAD_INTERVAL 64 + + unsigned short Intervalcount = count / PCI_LOAD_INTERVAL; + unsigned short Index; + unsigned long Dummy; + + for ( Index = 0 ; Index < Intervalcount ; Index++ ) + { + memcpy(TargetPtr, SourcePtr, PCI_LOAD_INTERVAL); + Dummy = *((volatile unsigned long *)TargetPtr); + TargetPtr += PCI_LOAD_INTERVAL; + SourcePtr += PCI_LOAD_INTERVAL; + } + + memcpy( TargetPtr, SourcePtr, count % PCI_LOAD_INTERVAL ); + +} /* End Of mgsl_load_pci_memory() */ + +static void mgsl_trace_block(struct mgsl_struct *info,const char* data, int count, int xmit) +{ + int i; + int linecount; + if (xmit) + printk("%s tx data:\n",info->device_name); + else + printk("%s rx data:\n",info->device_name); + + while(count) { + if (count > 16) + linecount = 16; + else + linecount = count; + + for(i=0;i=040 && data[i]<=0176) + printk("%c",data[i]); + else + printk("."); + } + printk("\n"); + + data += linecount; + count -= linecount; + } +} /* end of mgsl_trace_block() */ + +/* mgsl_tx_timeout() + * + * called when HDLC frame times out + * update stats and do tx completion processing + * + * Arguments: context pointer to device instance data + * Return Value: None + */ +static void mgsl_tx_timeout(unsigned long context) +{ + struct mgsl_struct *info = (struct mgsl_struct*)context; + unsigned long flags; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):mgsl_tx_timeout(%s)\n", + __FILE__,__LINE__,info->device_name); + if(info->tx_active && + (info->params.mode == MGSL_MODE_HDLC || + info->params.mode == MGSL_MODE_RAW) ) { + info->icount.txtimeout++; + } + spin_lock_irqsave(&info->irq_spinlock,flags); + info->tx_active = false; + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + + if ( info->params.flags & HDLC_FLAG_HDLC_LOOPMODE ) + usc_loopmode_cancel_transmit( info ); + + spin_unlock_irqrestore(&info->irq_spinlock,flags); + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_tx_done(info); + else +#endif + mgsl_bh_transmit(info); + +} /* end of mgsl_tx_timeout() */ + +/* signal that there are no more frames to send, so that + * line is 'released' by echoing RxD to TxD when current + * transmission is complete (or immediately if no tx in progress). + */ +static int mgsl_loopmode_send_done( struct mgsl_struct * info ) +{ + unsigned long flags; + + spin_lock_irqsave(&info->irq_spinlock,flags); + if (info->params.flags & HDLC_FLAG_HDLC_LOOPMODE) { + if (info->tx_active) + info->loopmode_send_done_requested = true; + else + usc_loopmode_send_done(info); + } + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + return 0; +} + +/* release the line by echoing RxD to TxD + * upon completion of a transmit frame + */ +static void usc_loopmode_send_done( struct mgsl_struct * info ) +{ + info->loopmode_send_done_requested = false; + /* clear CMR:13 to 0 to start echoing RxData to TxData */ + info->cmr_value &= ~BIT13; + usc_OutReg(info, CMR, info->cmr_value); +} + +/* abort a transmit in progress while in HDLC LoopMode + */ +static void usc_loopmode_cancel_transmit( struct mgsl_struct * info ) +{ + /* reset tx dma channel and purge TxFifo */ + usc_RTCmd( info, RTCmd_PurgeTxFifo ); + usc_DmaCmd( info, DmaCmd_ResetTxChannel ); + usc_loopmode_send_done( info ); +} + +/* for HDLC/SDLC LoopMode, setting CMR:13 after the transmitter is enabled + * is an Insert Into Loop action. Upon receipt of a GoAhead sequence (RxAbort) + * we must clear CMR:13 to begin repeating TxData to RxData + */ +static void usc_loopmode_insert_request( struct mgsl_struct * info ) +{ + info->loopmode_insert_requested = true; + + /* enable RxAbort irq. On next RxAbort, clear CMR:13 to + * begin repeating TxData on RxData (complete insertion) + */ + usc_OutReg( info, RICR, + (usc_InReg( info, RICR ) | RXSTATUS_ABORT_RECEIVED ) ); + + /* set CMR:13 to insert into loop on next GoAhead (RxAbort) */ + info->cmr_value |= BIT13; + usc_OutReg(info, CMR, info->cmr_value); +} + +/* return 1 if station is inserted into the loop, otherwise 0 + */ +static int usc_loopmode_active( struct mgsl_struct * info) +{ + return usc_InReg( info, CCSR ) & BIT7 ? 1 : 0 ; +} + +#if SYNCLINK_GENERIC_HDLC + +/** + * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) + * set encoding and frame check sequence (FCS) options + * + * dev pointer to network device structure + * encoding serial encoding setting + * parity FCS setting + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, + unsigned short parity) +{ + struct mgsl_struct *info = dev_to_port(dev); + unsigned char new_encoding; + unsigned short new_crctype; + + /* return error if TTY interface open */ + if (info->port.count) + return -EBUSY; + + switch (encoding) + { + case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; + case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; + case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; + case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; + case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; + default: return -EINVAL; + } + + switch (parity) + { + case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; + case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; + case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; + default: return -EINVAL; + } + + info->params.encoding = new_encoding; + info->params.crc_type = new_crctype; + + /* if network interface up, reprogram hardware */ + if (info->netcount) + mgsl_program_hw(info); + + return 0; +} + +/** + * called by generic HDLC layer to send frame + * + * skb socket buffer containing HDLC frame + * dev pointer to network device structure + */ +static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct mgsl_struct *info = dev_to_port(dev); + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); + + /* stop sending until this frame completes */ + netif_stop_queue(dev); + + /* copy data to device buffers */ + info->xmit_cnt = skb->len; + mgsl_load_tx_dma_buffer(info, skb->data, skb->len); + + /* update network statistics */ + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + + /* done with socket buffer, so free it */ + dev_kfree_skb(skb); + + /* save start time for transmit timeout detection */ + dev->trans_start = jiffies; + + /* start hardware transmitter if necessary */ + spin_lock_irqsave(&info->irq_spinlock,flags); + if (!info->tx_active) + usc_start_transmitter(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + return NETDEV_TX_OK; +} + +/** + * called by network layer when interface enabled + * claim resources and initialize hardware + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_open(struct net_device *dev) +{ + struct mgsl_struct *info = dev_to_port(dev); + int rc; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); + + /* generic HDLC layer open processing */ + if ((rc = hdlc_open(dev))) + return rc; + + /* arbitrate between network and tty opens */ + spin_lock_irqsave(&info->netlock, flags); + if (info->port.count != 0 || info->netcount != 0) { + printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); + spin_unlock_irqrestore(&info->netlock, flags); + return -EBUSY; + } + info->netcount=1; + spin_unlock_irqrestore(&info->netlock, flags); + + /* claim resources and init adapter */ + if ((rc = startup(info)) != 0) { + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + return rc; + } + + /* assert DTR and RTS, apply hardware settings */ + info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; + mgsl_program_hw(info); + + /* enable network layer transmit */ + dev->trans_start = jiffies; + netif_start_queue(dev); + + /* inform generic HDLC layer of current DCD status */ + spin_lock_irqsave(&info->irq_spinlock, flags); + usc_get_serial_signals(info); + spin_unlock_irqrestore(&info->irq_spinlock, flags); + if (info->serial_signals & SerialSignal_DCD) + netif_carrier_on(dev); + else + netif_carrier_off(dev); + return 0; +} + +/** + * called by network layer when interface is disabled + * shutdown hardware and release resources + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_close(struct net_device *dev) +{ + struct mgsl_struct *info = dev_to_port(dev); + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); + + netif_stop_queue(dev); + + /* shutdown adapter and release resources */ + shutdown(info); + + hdlc_close(dev); + + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + + return 0; +} + +/** + * called by network layer to process IOCTL call to network device + * + * dev pointer to network device structure + * ifr pointer to network interface request structure + * cmd IOCTL command code + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + const size_t size = sizeof(sync_serial_settings); + sync_serial_settings new_line; + sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; + struct mgsl_struct *info = dev_to_port(dev); + unsigned int flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); + + /* return error if TTY interface open */ + if (info->port.count) + return -EBUSY; + + if (cmd != SIOCWANDEV) + return hdlc_ioctl(dev, ifr, cmd); + + switch(ifr->ifr_settings.type) { + case IF_GET_IFACE: /* return current sync_serial_settings */ + + ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; + if (ifr->ifr_settings.size < size) { + ifr->ifr_settings.size = size; /* data size wanted */ + return -ENOBUFS; + } + + flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + + switch (flags){ + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; + case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; + default: new_line.clock_type = CLOCK_DEFAULT; + } + + new_line.clock_rate = info->params.clock_speed; + new_line.loopback = info->params.loopback ? 1:0; + + if (copy_to_user(line, &new_line, size)) + return -EFAULT; + return 0; + + case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ + + if(!capable(CAP_NET_ADMIN)) + return -EPERM; + if (copy_from_user(&new_line, line, size)) + return -EFAULT; + + switch (new_line.clock_type) + { + case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; + case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; + case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; + case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; + case CLOCK_DEFAULT: flags = info->params.flags & + (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; + default: return -EINVAL; + } + + if (new_line.loopback != 0 && new_line.loopback != 1) + return -EINVAL; + + info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + info->params.flags |= flags; + + info->params.loopback = new_line.loopback; + + if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) + info->params.clock_speed = new_line.clock_rate; + else + info->params.clock_speed = 0; + + /* if network interface up, reprogram hardware */ + if (info->netcount) + mgsl_program_hw(info); + return 0; + + default: + return hdlc_ioctl(dev, ifr, cmd); + } +} + +/** + * called by network layer when transmit timeout is detected + * + * dev pointer to network device structure + */ +static void hdlcdev_tx_timeout(struct net_device *dev) +{ + struct mgsl_struct *info = dev_to_port(dev); + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("hdlcdev_tx_timeout(%s)\n",dev->name); + + dev->stats.tx_errors++; + dev->stats.tx_aborted_errors++; + + spin_lock_irqsave(&info->irq_spinlock,flags); + usc_stop_transmitter(info); + spin_unlock_irqrestore(&info->irq_spinlock,flags); + + netif_wake_queue(dev); +} + +/** + * called by device driver when transmit completes + * reenable network layer transmit if stopped + * + * info pointer to device instance information + */ +static void hdlcdev_tx_done(struct mgsl_struct *info) +{ + if (netif_queue_stopped(info->netdev)) + netif_wake_queue(info->netdev); +} + +/** + * called by device driver when frame received + * pass frame to network layer + * + * info pointer to device instance information + * buf pointer to buffer contianing frame data + * size count of data bytes in buf + */ +static void hdlcdev_rx(struct mgsl_struct *info, char *buf, int size) +{ + struct sk_buff *skb = dev_alloc_skb(size); + struct net_device *dev = info->netdev; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("hdlcdev_rx(%s)\n", dev->name); + + if (skb == NULL) { + printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", + dev->name); + dev->stats.rx_dropped++; + return; + } + + memcpy(skb_put(skb, size), buf, size); + + skb->protocol = hdlc_type_trans(skb, dev); + + dev->stats.rx_packets++; + dev->stats.rx_bytes += size; + + netif_rx(skb); +} + +static const struct net_device_ops hdlcdev_ops = { + .ndo_open = hdlcdev_open, + .ndo_stop = hdlcdev_close, + .ndo_change_mtu = hdlc_change_mtu, + .ndo_start_xmit = hdlc_start_xmit, + .ndo_do_ioctl = hdlcdev_ioctl, + .ndo_tx_timeout = hdlcdev_tx_timeout, +}; + +/** + * called by device driver when adding device instance + * do generic HDLC initialization + * + * info pointer to device instance information + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_init(struct mgsl_struct *info) +{ + int rc; + struct net_device *dev; + hdlc_device *hdlc; + + /* allocate and initialize network and HDLC layer objects */ + + if (!(dev = alloc_hdlcdev(info))) { + printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); + return -ENOMEM; + } + + /* for network layer reporting purposes only */ + dev->base_addr = info->io_base; + dev->irq = info->irq_level; + dev->dma = info->dma_level; + + /* network layer callbacks and settings */ + dev->netdev_ops = &hdlcdev_ops; + dev->watchdog_timeo = 10 * HZ; + dev->tx_queue_len = 50; + + /* generic HDLC layer callbacks and settings */ + hdlc = dev_to_hdlc(dev); + hdlc->attach = hdlcdev_attach; + hdlc->xmit = hdlcdev_xmit; + + /* register objects with HDLC layer */ + if ((rc = register_hdlc_device(dev))) { + printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); + free_netdev(dev); + return rc; + } + + info->netdev = dev; + return 0; +} + +/** + * called by device driver when removing device instance + * do generic HDLC cleanup + * + * info pointer to device instance information + */ +static void hdlcdev_exit(struct mgsl_struct *info) +{ + unregister_hdlc_device(info->netdev); + free_netdev(info->netdev); + info->netdev = NULL; +} + +#endif /* CONFIG_HDLC */ + + +static int __devinit synclink_init_one (struct pci_dev *dev, + const struct pci_device_id *ent) +{ + struct mgsl_struct *info; + + if (pci_enable_device(dev)) { + printk("error enabling pci device %p\n", dev); + return -EIO; + } + + if (!(info = mgsl_allocate_device())) { + printk("can't allocate device instance data.\n"); + return -EIO; + } + + /* Copy user configuration info to device instance data */ + + info->io_base = pci_resource_start(dev, 2); + info->irq_level = dev->irq; + info->phys_memory_base = pci_resource_start(dev, 3); + + /* Because veremap only works on page boundaries we must map + * a larger area than is actually implemented for the LCR + * memory range. We map a full page starting at the page boundary. + */ + info->phys_lcr_base = pci_resource_start(dev, 0); + info->lcr_offset = info->phys_lcr_base & (PAGE_SIZE-1); + info->phys_lcr_base &= ~(PAGE_SIZE-1); + + info->bus_type = MGSL_BUS_TYPE_PCI; + info->io_addr_size = 8; + info->irq_flags = IRQF_SHARED; + + if (dev->device == 0x0210) { + /* Version 1 PCI9030 based universal PCI adapter */ + info->misc_ctrl_value = 0x007c4080; + info->hw_version = 1; + } else { + /* Version 0 PCI9050 based 5V PCI adapter + * A PCI9050 bug prevents reading LCR registers if + * LCR base address bit 7 is set. Maintain shadow + * value so we can write to LCR misc control reg. + */ + info->misc_ctrl_value = 0x087e4546; + info->hw_version = 0; + } + + mgsl_add_device(info); + + return 0; +} + +static void __devexit synclink_remove_one (struct pci_dev *dev) +{ +} + diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c new file mode 100644 index 000000000000..a35dd549a008 --- /dev/null +++ b/drivers/tty/synclink_gt.c @@ -0,0 +1,5161 @@ +/* + * Device driver for Microgate SyncLink GT serial adapters. + * + * written by Paul Fulghum for Microgate Corporation + * paulkf@microgate.com + * + * Microgate and SyncLink are trademarks of Microgate Corporation + * + * This code is released under the GNU General Public License (GPL) + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * DEBUG OUTPUT DEFINITIONS + * + * uncomment lines below to enable specific types of debug output + * + * DBGINFO information - most verbose output + * DBGERR serious errors + * DBGBH bottom half service routine debugging + * DBGISR interrupt service routine debugging + * DBGDATA output receive and transmit data + * DBGTBUF output transmit DMA buffers and registers + * DBGRBUF output receive DMA buffers and registers + */ + +#define DBGINFO(fmt) if (debug_level >= DEBUG_LEVEL_INFO) printk fmt +#define DBGERR(fmt) if (debug_level >= DEBUG_LEVEL_ERROR) printk fmt +#define DBGBH(fmt) if (debug_level >= DEBUG_LEVEL_BH) printk fmt +#define DBGISR(fmt) if (debug_level >= DEBUG_LEVEL_ISR) printk fmt +#define DBGDATA(info, buf, size, label) if (debug_level >= DEBUG_LEVEL_DATA) trace_block((info), (buf), (size), (label)) +/*#define DBGTBUF(info) dump_tbufs(info)*/ +/*#define DBGRBUF(info) dump_rbufs(info)*/ + + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_GT_MODULE)) +#define SYNCLINK_GENERIC_HDLC 1 +#else +#define SYNCLINK_GENERIC_HDLC 0 +#endif + +/* + * module identification + */ +static char *driver_name = "SyncLink GT"; +static char *tty_driver_name = "synclink_gt"; +static char *tty_dev_prefix = "ttySLG"; +MODULE_LICENSE("GPL"); +#define MGSL_MAGIC 0x5401 +#define MAX_DEVICES 32 + +static struct pci_device_id pci_table[] = { + {PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, + {PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT2_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, + {PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT4_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, + {PCI_VENDOR_ID_MICROGATE, SYNCLINK_AC_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,}, + {0,}, /* terminate list */ +}; +MODULE_DEVICE_TABLE(pci, pci_table); + +static int init_one(struct pci_dev *dev,const struct pci_device_id *ent); +static void remove_one(struct pci_dev *dev); +static struct pci_driver pci_driver = { + .name = "synclink_gt", + .id_table = pci_table, + .probe = init_one, + .remove = __devexit_p(remove_one), +}; + +static bool pci_registered; + +/* + * module configuration and status + */ +static struct slgt_info *slgt_device_list; +static int slgt_device_count; + +static int ttymajor; +static int debug_level; +static int maxframe[MAX_DEVICES]; + +module_param(ttymajor, int, 0); +module_param(debug_level, int, 0); +module_param_array(maxframe, int, NULL, 0); + +MODULE_PARM_DESC(ttymajor, "TTY major device number override: 0=auto assigned"); +MODULE_PARM_DESC(debug_level, "Debug syslog output: 0=disabled, 1 to 5=increasing detail"); +MODULE_PARM_DESC(maxframe, "Maximum frame size used by device (4096 to 65535)"); + +/* + * tty support and callbacks + */ +static struct tty_driver *serial_driver; + +static int open(struct tty_struct *tty, struct file * filp); +static void close(struct tty_struct *tty, struct file * filp); +static void hangup(struct tty_struct *tty); +static void set_termios(struct tty_struct *tty, struct ktermios *old_termios); + +static int write(struct tty_struct *tty, const unsigned char *buf, int count); +static int put_char(struct tty_struct *tty, unsigned char ch); +static void send_xchar(struct tty_struct *tty, char ch); +static void wait_until_sent(struct tty_struct *tty, int timeout); +static int write_room(struct tty_struct *tty); +static void flush_chars(struct tty_struct *tty); +static void flush_buffer(struct tty_struct *tty); +static void tx_hold(struct tty_struct *tty); +static void tx_release(struct tty_struct *tty); + +static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); +static int chars_in_buffer(struct tty_struct *tty); +static void throttle(struct tty_struct * tty); +static void unthrottle(struct tty_struct * tty); +static int set_break(struct tty_struct *tty, int break_state); + +/* + * generic HDLC support and callbacks + */ +#if SYNCLINK_GENERIC_HDLC +#define dev_to_port(D) (dev_to_hdlc(D)->priv) +static void hdlcdev_tx_done(struct slgt_info *info); +static void hdlcdev_rx(struct slgt_info *info, char *buf, int size); +static int hdlcdev_init(struct slgt_info *info); +static void hdlcdev_exit(struct slgt_info *info); +#endif + + +/* + * device specific structures, macros and functions + */ + +#define SLGT_MAX_PORTS 4 +#define SLGT_REG_SIZE 256 + +/* + * conditional wait facility + */ +struct cond_wait { + struct cond_wait *next; + wait_queue_head_t q; + wait_queue_t wait; + unsigned int data; +}; +static void init_cond_wait(struct cond_wait *w, unsigned int data); +static void add_cond_wait(struct cond_wait **head, struct cond_wait *w); +static void remove_cond_wait(struct cond_wait **head, struct cond_wait *w); +static void flush_cond_wait(struct cond_wait **head); + +/* + * DMA buffer descriptor and access macros + */ +struct slgt_desc +{ + __le16 count; + __le16 status; + __le32 pbuf; /* physical address of data buffer */ + __le32 next; /* physical address of next descriptor */ + + /* driver book keeping */ + char *buf; /* virtual address of data buffer */ + unsigned int pdesc; /* physical address of this descriptor */ + dma_addr_t buf_dma_addr; + unsigned short buf_count; +}; + +#define set_desc_buffer(a,b) (a).pbuf = cpu_to_le32((unsigned int)(b)) +#define set_desc_next(a,b) (a).next = cpu_to_le32((unsigned int)(b)) +#define set_desc_count(a,b)(a).count = cpu_to_le16((unsigned short)(b)) +#define set_desc_eof(a,b) (a).status = cpu_to_le16((b) ? (le16_to_cpu((a).status) | BIT0) : (le16_to_cpu((a).status) & ~BIT0)) +#define set_desc_status(a, b) (a).status = cpu_to_le16((unsigned short)(b)) +#define desc_count(a) (le16_to_cpu((a).count)) +#define desc_status(a) (le16_to_cpu((a).status)) +#define desc_complete(a) (le16_to_cpu((a).status) & BIT15) +#define desc_eof(a) (le16_to_cpu((a).status) & BIT2) +#define desc_crc_error(a) (le16_to_cpu((a).status) & BIT1) +#define desc_abort(a) (le16_to_cpu((a).status) & BIT0) +#define desc_residue(a) ((le16_to_cpu((a).status) & 0x38) >> 3) + +struct _input_signal_events { + int ri_up; + int ri_down; + int dsr_up; + int dsr_down; + int dcd_up; + int dcd_down; + int cts_up; + int cts_down; +}; + +/* + * device instance data structure + */ +struct slgt_info { + void *if_ptr; /* General purpose pointer (used by SPPP) */ + struct tty_port port; + + struct slgt_info *next_device; /* device list link */ + + int magic; + + char device_name[25]; + struct pci_dev *pdev; + + int port_count; /* count of ports on adapter */ + int adapter_num; /* adapter instance number */ + int port_num; /* port instance number */ + + /* array of pointers to port contexts on this adapter */ + struct slgt_info *port_array[SLGT_MAX_PORTS]; + + int line; /* tty line instance number */ + + struct mgsl_icount icount; + + int timeout; + int x_char; /* xon/xoff character */ + unsigned int read_status_mask; + unsigned int ignore_status_mask; + + wait_queue_head_t status_event_wait_q; + wait_queue_head_t event_wait_q; + struct timer_list tx_timer; + struct timer_list rx_timer; + + unsigned int gpio_present; + struct cond_wait *gpio_wait_q; + + spinlock_t lock; /* spinlock for synchronizing with ISR */ + + struct work_struct task; + u32 pending_bh; + bool bh_requested; + bool bh_running; + + int isr_overflow; + bool irq_requested; /* true if IRQ requested */ + bool irq_occurred; /* for diagnostics use */ + + /* device configuration */ + + unsigned int bus_type; + unsigned int irq_level; + unsigned long irq_flags; + + unsigned char __iomem * reg_addr; /* memory mapped registers address */ + u32 phys_reg_addr; + bool reg_addr_requested; + + MGSL_PARAMS params; /* communications parameters */ + u32 idle_mode; + u32 max_frame_size; /* as set by device config */ + + unsigned int rbuf_fill_level; + unsigned int rx_pio; + unsigned int if_mode; + unsigned int base_clock; + unsigned int xsync; + unsigned int xctrl; + + /* device status */ + + bool rx_enabled; + bool rx_restart; + + bool tx_enabled; + bool tx_active; + + unsigned char signals; /* serial signal states */ + int init_error; /* initialization error */ + + unsigned char *tx_buf; + int tx_count; + + char flag_buf[MAX_ASYNC_BUFFER_SIZE]; + char char_buf[MAX_ASYNC_BUFFER_SIZE]; + bool drop_rts_on_tx_done; + struct _input_signal_events input_signal_events; + + int dcd_chkcount; /* check counts to prevent */ + int cts_chkcount; /* too many IRQs if a signal */ + int dsr_chkcount; /* is floating */ + int ri_chkcount; + + char *bufs; /* virtual address of DMA buffer lists */ + dma_addr_t bufs_dma_addr; /* physical address of buffer descriptors */ + + unsigned int rbuf_count; + struct slgt_desc *rbufs; + unsigned int rbuf_current; + unsigned int rbuf_index; + unsigned int rbuf_fill_index; + unsigned short rbuf_fill_count; + + unsigned int tbuf_count; + struct slgt_desc *tbufs; + unsigned int tbuf_current; + unsigned int tbuf_start; + + unsigned char *tmp_rbuf; + unsigned int tmp_rbuf_count; + + /* SPPP/Cisco HDLC device parts */ + + int netcount; + spinlock_t netlock; +#if SYNCLINK_GENERIC_HDLC + struct net_device *netdev; +#endif + +}; + +static MGSL_PARAMS default_params = { + .mode = MGSL_MODE_HDLC, + .loopback = 0, + .flags = HDLC_FLAG_UNDERRUN_ABORT15, + .encoding = HDLC_ENCODING_NRZI_SPACE, + .clock_speed = 0, + .addr_filter = 0xff, + .crc_type = HDLC_CRC_16_CCITT, + .preamble_length = HDLC_PREAMBLE_LENGTH_8BITS, + .preamble = HDLC_PREAMBLE_PATTERN_NONE, + .data_rate = 9600, + .data_bits = 8, + .stop_bits = 1, + .parity = ASYNC_PARITY_NONE +}; + + +#define BH_RECEIVE 1 +#define BH_TRANSMIT 2 +#define BH_STATUS 4 +#define IO_PIN_SHUTDOWN_LIMIT 100 + +#define DMABUFSIZE 256 +#define DESC_LIST_SIZE 4096 + +#define MASK_PARITY BIT1 +#define MASK_FRAMING BIT0 +#define MASK_BREAK BIT14 +#define MASK_OVERRUN BIT4 + +#define GSR 0x00 /* global status */ +#define JCR 0x04 /* JTAG control */ +#define IODR 0x08 /* GPIO direction */ +#define IOER 0x0c /* GPIO interrupt enable */ +#define IOVR 0x10 /* GPIO value */ +#define IOSR 0x14 /* GPIO interrupt status */ +#define TDR 0x80 /* tx data */ +#define RDR 0x80 /* rx data */ +#define TCR 0x82 /* tx control */ +#define TIR 0x84 /* tx idle */ +#define TPR 0x85 /* tx preamble */ +#define RCR 0x86 /* rx control */ +#define VCR 0x88 /* V.24 control */ +#define CCR 0x89 /* clock control */ +#define BDR 0x8a /* baud divisor */ +#define SCR 0x8c /* serial control */ +#define SSR 0x8e /* serial status */ +#define RDCSR 0x90 /* rx DMA control/status */ +#define TDCSR 0x94 /* tx DMA control/status */ +#define RDDAR 0x98 /* rx DMA descriptor address */ +#define TDDAR 0x9c /* tx DMA descriptor address */ +#define XSR 0x40 /* extended sync pattern */ +#define XCR 0x44 /* extended control */ + +#define RXIDLE BIT14 +#define RXBREAK BIT14 +#define IRQ_TXDATA BIT13 +#define IRQ_TXIDLE BIT12 +#define IRQ_TXUNDER BIT11 /* HDLC */ +#define IRQ_RXDATA BIT10 +#define IRQ_RXIDLE BIT9 /* HDLC */ +#define IRQ_RXBREAK BIT9 /* async */ +#define IRQ_RXOVER BIT8 +#define IRQ_DSR BIT7 +#define IRQ_CTS BIT6 +#define IRQ_DCD BIT5 +#define IRQ_RI BIT4 +#define IRQ_ALL 0x3ff0 +#define IRQ_MASTER BIT0 + +#define slgt_irq_on(info, mask) \ + wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) | (mask))) +#define slgt_irq_off(info, mask) \ + wr_reg16((info), SCR, (unsigned short)(rd_reg16((info), SCR) & ~(mask))) + +static __u8 rd_reg8(struct slgt_info *info, unsigned int addr); +static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value); +static __u16 rd_reg16(struct slgt_info *info, unsigned int addr); +static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value); +static __u32 rd_reg32(struct slgt_info *info, unsigned int addr); +static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value); + +static void msc_set_vcr(struct slgt_info *info); + +static int startup(struct slgt_info *info); +static int block_til_ready(struct tty_struct *tty, struct file * filp,struct slgt_info *info); +static void shutdown(struct slgt_info *info); +static void program_hw(struct slgt_info *info); +static void change_params(struct slgt_info *info); + +static int register_test(struct slgt_info *info); +static int irq_test(struct slgt_info *info); +static int loopback_test(struct slgt_info *info); +static int adapter_test(struct slgt_info *info); + +static void reset_adapter(struct slgt_info *info); +static void reset_port(struct slgt_info *info); +static void async_mode(struct slgt_info *info); +static void sync_mode(struct slgt_info *info); + +static void rx_stop(struct slgt_info *info); +static void rx_start(struct slgt_info *info); +static void reset_rbufs(struct slgt_info *info); +static void free_rbufs(struct slgt_info *info, unsigned int first, unsigned int last); +static void rdma_reset(struct slgt_info *info); +static bool rx_get_frame(struct slgt_info *info); +static bool rx_get_buf(struct slgt_info *info); + +static void tx_start(struct slgt_info *info); +static void tx_stop(struct slgt_info *info); +static void tx_set_idle(struct slgt_info *info); +static unsigned int free_tbuf_count(struct slgt_info *info); +static unsigned int tbuf_bytes(struct slgt_info *info); +static void reset_tbufs(struct slgt_info *info); +static void tdma_reset(struct slgt_info *info); +static bool tx_load(struct slgt_info *info, const char *buf, unsigned int count); + +static void get_signals(struct slgt_info *info); +static void set_signals(struct slgt_info *info); +static void enable_loopback(struct slgt_info *info); +static void set_rate(struct slgt_info *info, u32 data_rate); + +static int bh_action(struct slgt_info *info); +static void bh_handler(struct work_struct *work); +static void bh_transmit(struct slgt_info *info); +static void isr_serial(struct slgt_info *info); +static void isr_rdma(struct slgt_info *info); +static void isr_txeom(struct slgt_info *info, unsigned short status); +static void isr_tdma(struct slgt_info *info); + +static int alloc_dma_bufs(struct slgt_info *info); +static void free_dma_bufs(struct slgt_info *info); +static int alloc_desc(struct slgt_info *info); +static void free_desc(struct slgt_info *info); +static int alloc_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count); +static void free_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count); + +static int alloc_tmp_rbuf(struct slgt_info *info); +static void free_tmp_rbuf(struct slgt_info *info); + +static void tx_timeout(unsigned long context); +static void rx_timeout(unsigned long context); + +/* + * ioctl handlers + */ +static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount); +static int get_params(struct slgt_info *info, MGSL_PARAMS __user *params); +static int set_params(struct slgt_info *info, MGSL_PARAMS __user *params); +static int get_txidle(struct slgt_info *info, int __user *idle_mode); +static int set_txidle(struct slgt_info *info, int idle_mode); +static int tx_enable(struct slgt_info *info, int enable); +static int tx_abort(struct slgt_info *info); +static int rx_enable(struct slgt_info *info, int enable); +static int modem_input_wait(struct slgt_info *info,int arg); +static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr); +static int tiocmget(struct tty_struct *tty); +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); +static int set_break(struct tty_struct *tty, int break_state); +static int get_interface(struct slgt_info *info, int __user *if_mode); +static int set_interface(struct slgt_info *info, int if_mode); +static int set_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); +static int get_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); +static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); +static int get_xsync(struct slgt_info *info, int __user *if_mode); +static int set_xsync(struct slgt_info *info, int if_mode); +static int get_xctrl(struct slgt_info *info, int __user *if_mode); +static int set_xctrl(struct slgt_info *info, int if_mode); + +/* + * driver functions + */ +static void add_device(struct slgt_info *info); +static void device_init(int adapter_num, struct pci_dev *pdev); +static int claim_resources(struct slgt_info *info); +static void release_resources(struct slgt_info *info); + +/* + * DEBUG OUTPUT CODE + */ +#ifndef DBGINFO +#define DBGINFO(fmt) +#endif +#ifndef DBGERR +#define DBGERR(fmt) +#endif +#ifndef DBGBH +#define DBGBH(fmt) +#endif +#ifndef DBGISR +#define DBGISR(fmt) +#endif + +#ifdef DBGDATA +static void trace_block(struct slgt_info *info, const char *data, int count, const char *label) +{ + int i; + int linecount; + printk("%s %s data:\n",info->device_name, label); + while(count) { + linecount = (count > 16) ? 16 : count; + for(i=0; i < linecount; i++) + printk("%02X ",(unsigned char)data[i]); + for(;i<17;i++) + printk(" "); + for(i=0;i=040 && data[i]<=0176) + printk("%c",data[i]); + else + printk("."); + } + printk("\n"); + data += linecount; + count -= linecount; + } +} +#else +#define DBGDATA(info, buf, size, label) +#endif + +#ifdef DBGTBUF +static void dump_tbufs(struct slgt_info *info) +{ + int i; + printk("tbuf_current=%d\n", info->tbuf_current); + for (i=0 ; i < info->tbuf_count ; i++) { + printk("%d: count=%04X status=%04X\n", + i, le16_to_cpu(info->tbufs[i].count), le16_to_cpu(info->tbufs[i].status)); + } +} +#else +#define DBGTBUF(info) +#endif + +#ifdef DBGRBUF +static void dump_rbufs(struct slgt_info *info) +{ + int i; + printk("rbuf_current=%d\n", info->rbuf_current); + for (i=0 ; i < info->rbuf_count ; i++) { + printk("%d: count=%04X status=%04X\n", + i, le16_to_cpu(info->rbufs[i].count), le16_to_cpu(info->rbufs[i].status)); + } +} +#else +#define DBGRBUF(info) +#endif + +static inline int sanity_check(struct slgt_info *info, char *devname, const char *name) +{ +#ifdef SANITY_CHECK + if (!info) { + printk("null struct slgt_info for (%s) in %s\n", devname, name); + return 1; + } + if (info->magic != MGSL_MAGIC) { + printk("bad magic number struct slgt_info (%s) in %s\n", devname, name); + return 1; + } +#else + if (!info) + return 1; +#endif + return 0; +} + +/** + * line discipline callback wrappers + * + * The wrappers maintain line discipline references + * while calling into the line discipline. + * + * ldisc_receive_buf - pass receive data to line discipline + */ +static void ldisc_receive_buf(struct tty_struct *tty, + const __u8 *data, char *flags, int count) +{ + struct tty_ldisc *ld; + if (!tty) + return; + ld = tty_ldisc_ref(tty); + if (ld) { + if (ld->ops->receive_buf) + ld->ops->receive_buf(tty, data, flags, count); + tty_ldisc_deref(ld); + } +} + +/* tty callbacks */ + +static int open(struct tty_struct *tty, struct file *filp) +{ + struct slgt_info *info; + int retval, line; + unsigned long flags; + + line = tty->index; + if ((line < 0) || (line >= slgt_device_count)) { + DBGERR(("%s: open with invalid line #%d.\n", driver_name, line)); + return -ENODEV; + } + + info = slgt_device_list; + while(info && info->line != line) + info = info->next_device; + if (sanity_check(info, tty->name, "open")) + return -ENODEV; + if (info->init_error) { + DBGERR(("%s init error=%d\n", info->device_name, info->init_error)); + return -ENODEV; + } + + tty->driver_data = info; + info->port.tty = tty; + + DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count)); + + /* If port is closing, signal caller to try again */ + if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ + if (info->port.flags & ASYNC_CLOSING) + interruptible_sleep_on(&info->port.close_wait); + retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS); + goto cleanup; + } + + mutex_lock(&info->port.mutex); + info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0; + + spin_lock_irqsave(&info->netlock, flags); + if (info->netcount) { + retval = -EBUSY; + spin_unlock_irqrestore(&info->netlock, flags); + mutex_unlock(&info->port.mutex); + goto cleanup; + } + info->port.count++; + spin_unlock_irqrestore(&info->netlock, flags); + + if (info->port.count == 1) { + /* 1st open on this device, init hardware */ + retval = startup(info); + if (retval < 0) { + mutex_unlock(&info->port.mutex); + goto cleanup; + } + } + mutex_unlock(&info->port.mutex); + retval = block_til_ready(tty, filp, info); + if (retval) { + DBGINFO(("%s block_til_ready rc=%d\n", info->device_name, retval)); + goto cleanup; + } + + retval = 0; + +cleanup: + if (retval) { + if (tty->count == 1) + info->port.tty = NULL; /* tty layer will release tty struct */ + if(info->port.count) + info->port.count--; + } + + DBGINFO(("%s open rc=%d\n", info->device_name, retval)); + return retval; +} + +static void close(struct tty_struct *tty, struct file *filp) +{ + struct slgt_info *info = tty->driver_data; + + if (sanity_check(info, tty->name, "close")) + return; + DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count)); + + if (tty_port_close_start(&info->port, tty, filp) == 0) + goto cleanup; + + mutex_lock(&info->port.mutex); + if (info->port.flags & ASYNC_INITIALIZED) + wait_until_sent(tty, info->timeout); + flush_buffer(tty); + tty_ldisc_flush(tty); + + shutdown(info); + mutex_unlock(&info->port.mutex); + + tty_port_close_end(&info->port, tty); + info->port.tty = NULL; +cleanup: + DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count)); +} + +static void hangup(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "hangup")) + return; + DBGINFO(("%s hangup\n", info->device_name)); + + flush_buffer(tty); + + mutex_lock(&info->port.mutex); + shutdown(info); + + spin_lock_irqsave(&info->port.lock, flags); + info->port.count = 0; + info->port.flags &= ~ASYNC_NORMAL_ACTIVE; + info->port.tty = NULL; + spin_unlock_irqrestore(&info->port.lock, flags); + mutex_unlock(&info->port.mutex); + + wake_up_interruptible(&info->port.open_wait); +} + +static void set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + DBGINFO(("%s set_termios\n", tty->driver->name)); + + change_params(info); + + /* Handle transition to B0 status */ + if (old_termios->c_cflag & CBAUD && + !(tty->termios->c_cflag & CBAUD)) { + info->signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + spin_lock_irqsave(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } + + /* Handle transition away from B0 status */ + if (!(old_termios->c_cflag & CBAUD) && + tty->termios->c_cflag & CBAUD) { + info->signals |= SerialSignal_DTR; + if (!(tty->termios->c_cflag & CRTSCTS) || + !test_bit(TTY_THROTTLED, &tty->flags)) { + info->signals |= SerialSignal_RTS; + } + spin_lock_irqsave(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } + + /* Handle turning off CRTSCTS */ + if (old_termios->c_cflag & CRTSCTS && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + tx_release(tty); + } +} + +static void update_tx_timer(struct slgt_info *info) +{ + /* + * use worst case speed of 1200bps to calculate transmit timeout + * based on data in buffers (tbuf_bytes) and FIFO (128 bytes) + */ + if (info->params.mode == MGSL_MODE_HDLC) { + int timeout = (tbuf_bytes(info) * 7) + 1000; + mod_timer(&info->tx_timer, jiffies + msecs_to_jiffies(timeout)); + } +} + +static int write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + int ret = 0; + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "write")) + return -EIO; + + DBGINFO(("%s write count=%d\n", info->device_name, count)); + + if (!info->tx_buf || (count > info->max_frame_size)) + return -EIO; + + if (!count || tty->stopped || tty->hw_stopped) + return 0; + + spin_lock_irqsave(&info->lock, flags); + + if (info->tx_count) { + /* send accumulated data from send_char() */ + if (!tx_load(info, info->tx_buf, info->tx_count)) + goto cleanup; + info->tx_count = 0; + } + + if (tx_load(info, buf, count)) + ret = count; + +cleanup: + spin_unlock_irqrestore(&info->lock, flags); + DBGINFO(("%s write rc=%d\n", info->device_name, ret)); + return ret; +} + +static int put_char(struct tty_struct *tty, unsigned char ch) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + int ret = 0; + + if (sanity_check(info, tty->name, "put_char")) + return 0; + DBGINFO(("%s put_char(%d)\n", info->device_name, ch)); + if (!info->tx_buf) + return 0; + spin_lock_irqsave(&info->lock,flags); + if (info->tx_count < info->max_frame_size) { + info->tx_buf[info->tx_count++] = ch; + ret = 1; + } + spin_unlock_irqrestore(&info->lock,flags); + return ret; +} + +static void send_xchar(struct tty_struct *tty, char ch) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "send_xchar")) + return; + DBGINFO(("%s send_xchar(%d)\n", info->device_name, ch)); + info->x_char = ch; + if (ch) { + spin_lock_irqsave(&info->lock,flags); + if (!info->tx_enabled) + tx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + } +} + +static void wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct slgt_info *info = tty->driver_data; + unsigned long orig_jiffies, char_time; + + if (!info ) + return; + if (sanity_check(info, tty->name, "wait_until_sent")) + return; + DBGINFO(("%s wait_until_sent entry\n", info->device_name)); + if (!(info->port.flags & ASYNC_INITIALIZED)) + goto exit; + + orig_jiffies = jiffies; + + /* Set check interval to 1/5 of estimated time to + * send a character, and make it at least 1. The check + * interval should also be less than the timeout. + * Note: use tight timings here to satisfy the NIST-PCTS. + */ + + if (info->params.data_rate) { + char_time = info->timeout/(32 * 5); + if (!char_time) + char_time++; + } else + char_time = 1; + + if (timeout) + char_time = min_t(unsigned long, char_time, timeout); + + while (info->tx_active) { + msleep_interruptible(jiffies_to_msecs(char_time)); + if (signal_pending(current)) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } +exit: + DBGINFO(("%s wait_until_sent exit\n", info->device_name)); +} + +static int write_room(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + int ret; + + if (sanity_check(info, tty->name, "write_room")) + return 0; + ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE; + DBGINFO(("%s write_room=%d\n", info->device_name, ret)); + return ret; +} + +static void flush_chars(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "flush_chars")) + return; + DBGINFO(("%s flush_chars entry tx_count=%d\n", info->device_name, info->tx_count)); + + if (info->tx_count <= 0 || tty->stopped || + tty->hw_stopped || !info->tx_buf) + return; + + DBGINFO(("%s flush_chars start transmit\n", info->device_name)); + + spin_lock_irqsave(&info->lock,flags); + if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count)) + info->tx_count = 0; + spin_unlock_irqrestore(&info->lock,flags); +} + +static void flush_buffer(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "flush_buffer")) + return; + DBGINFO(("%s flush_buffer\n", info->device_name)); + + spin_lock_irqsave(&info->lock, flags); + info->tx_count = 0; + spin_unlock_irqrestore(&info->lock, flags); + + tty_wakeup(tty); +} + +/* + * throttle (stop) transmitter + */ +static void tx_hold(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "tx_hold")) + return; + DBGINFO(("%s tx_hold\n", info->device_name)); + spin_lock_irqsave(&info->lock,flags); + if (info->tx_enabled && info->params.mode == MGSL_MODE_ASYNC) + tx_stop(info); + spin_unlock_irqrestore(&info->lock,flags); +} + +/* + * release (start) transmitter + */ +static void tx_release(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "tx_release")) + return; + DBGINFO(("%s tx_release\n", info->device_name)); + spin_lock_irqsave(&info->lock, flags); + if (info->tx_count && tx_load(info, info->tx_buf, info->tx_count)) + info->tx_count = 0; + spin_unlock_irqrestore(&info->lock, flags); +} + +/* + * Service an IOCTL request + * + * Arguments + * + * tty pointer to tty instance data + * cmd IOCTL command code + * arg command argument/context + * + * Return 0 if success, otherwise error code + */ +static int ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct slgt_info *info = tty->driver_data; + void __user *argp = (void __user *)arg; + int ret; + + if (sanity_check(info, tty->name, "ioctl")) + return -ENODEV; + DBGINFO(("%s ioctl() cmd=%08X\n", info->device_name, cmd)); + + if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && + (cmd != TIOCMIWAIT)) { + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + } + + switch (cmd) { + case MGSL_IOCWAITEVENT: + return wait_mgsl_event(info, argp); + case TIOCMIWAIT: + return modem_input_wait(info,(int)arg); + case MGSL_IOCSGPIO: + return set_gpio(info, argp); + case MGSL_IOCGGPIO: + return get_gpio(info, argp); + case MGSL_IOCWAITGPIO: + return wait_gpio(info, argp); + case MGSL_IOCGXSYNC: + return get_xsync(info, argp); + case MGSL_IOCSXSYNC: + return set_xsync(info, (int)arg); + case MGSL_IOCGXCTRL: + return get_xctrl(info, argp); + case MGSL_IOCSXCTRL: + return set_xctrl(info, (int)arg); + } + mutex_lock(&info->port.mutex); + switch (cmd) { + case MGSL_IOCGPARAMS: + ret = get_params(info, argp); + break; + case MGSL_IOCSPARAMS: + ret = set_params(info, argp); + break; + case MGSL_IOCGTXIDLE: + ret = get_txidle(info, argp); + break; + case MGSL_IOCSTXIDLE: + ret = set_txidle(info, (int)arg); + break; + case MGSL_IOCTXENABLE: + ret = tx_enable(info, (int)arg); + break; + case MGSL_IOCRXENABLE: + ret = rx_enable(info, (int)arg); + break; + case MGSL_IOCTXABORT: + ret = tx_abort(info); + break; + case MGSL_IOCGSTATS: + ret = get_stats(info, argp); + break; + case MGSL_IOCGIF: + ret = get_interface(info, argp); + break; + case MGSL_IOCSIF: + ret = set_interface(info,(int)arg); + break; + default: + ret = -ENOIOCTLCMD; + } + mutex_unlock(&info->port.mutex); + return ret; +} + +static int get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) + +{ + struct slgt_info *info = tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->lock,flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + +/* + * support for 32 bit ioctl calls on 64 bit systems + */ +#ifdef CONFIG_COMPAT +static long get_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *user_params) +{ + struct MGSL_PARAMS32 tmp_params; + + DBGINFO(("%s get_params32\n", info->device_name)); + memset(&tmp_params, 0, sizeof(tmp_params)); + tmp_params.mode = (compat_ulong_t)info->params.mode; + tmp_params.loopback = info->params.loopback; + tmp_params.flags = info->params.flags; + tmp_params.encoding = info->params.encoding; + tmp_params.clock_speed = (compat_ulong_t)info->params.clock_speed; + tmp_params.addr_filter = info->params.addr_filter; + tmp_params.crc_type = info->params.crc_type; + tmp_params.preamble_length = info->params.preamble_length; + tmp_params.preamble = info->params.preamble; + tmp_params.data_rate = (compat_ulong_t)info->params.data_rate; + tmp_params.data_bits = info->params.data_bits; + tmp_params.stop_bits = info->params.stop_bits; + tmp_params.parity = info->params.parity; + if (copy_to_user(user_params, &tmp_params, sizeof(struct MGSL_PARAMS32))) + return -EFAULT; + return 0; +} + +static long set_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *new_params) +{ + struct MGSL_PARAMS32 tmp_params; + + DBGINFO(("%s set_params32\n", info->device_name)); + if (copy_from_user(&tmp_params, new_params, sizeof(struct MGSL_PARAMS32))) + return -EFAULT; + + spin_lock(&info->lock); + if (tmp_params.mode == MGSL_MODE_BASE_CLOCK) { + info->base_clock = tmp_params.clock_speed; + } else { + info->params.mode = tmp_params.mode; + info->params.loopback = tmp_params.loopback; + info->params.flags = tmp_params.flags; + info->params.encoding = tmp_params.encoding; + info->params.clock_speed = tmp_params.clock_speed; + info->params.addr_filter = tmp_params.addr_filter; + info->params.crc_type = tmp_params.crc_type; + info->params.preamble_length = tmp_params.preamble_length; + info->params.preamble = tmp_params.preamble; + info->params.data_rate = tmp_params.data_rate; + info->params.data_bits = tmp_params.data_bits; + info->params.stop_bits = tmp_params.stop_bits; + info->params.parity = tmp_params.parity; + } + spin_unlock(&info->lock); + + program_hw(info); + + return 0; +} + +static long slgt_compat_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct slgt_info *info = tty->driver_data; + int rc = -ENOIOCTLCMD; + + if (sanity_check(info, tty->name, "compat_ioctl")) + return -ENODEV; + DBGINFO(("%s compat_ioctl() cmd=%08X\n", info->device_name, cmd)); + + switch (cmd) { + + case MGSL_IOCSPARAMS32: + rc = set_params32(info, compat_ptr(arg)); + break; + + case MGSL_IOCGPARAMS32: + rc = get_params32(info, compat_ptr(arg)); + break; + + case MGSL_IOCGPARAMS: + case MGSL_IOCSPARAMS: + case MGSL_IOCGTXIDLE: + case MGSL_IOCGSTATS: + case MGSL_IOCWAITEVENT: + case MGSL_IOCGIF: + case MGSL_IOCSGPIO: + case MGSL_IOCGGPIO: + case MGSL_IOCWAITGPIO: + case MGSL_IOCGXSYNC: + case MGSL_IOCGXCTRL: + case MGSL_IOCSTXIDLE: + case MGSL_IOCTXENABLE: + case MGSL_IOCRXENABLE: + case MGSL_IOCTXABORT: + case TIOCMIWAIT: + case MGSL_IOCSIF: + case MGSL_IOCSXSYNC: + case MGSL_IOCSXCTRL: + rc = ioctl(tty, cmd, arg); + break; + } + + DBGINFO(("%s compat_ioctl() cmd=%08X rc=%d\n", info->device_name, cmd, rc)); + return rc; +} +#else +#define slgt_compat_ioctl NULL +#endif /* ifdef CONFIG_COMPAT */ + +/* + * proc fs support + */ +static inline void line_info(struct seq_file *m, struct slgt_info *info) +{ + char stat_buf[30]; + unsigned long flags; + + seq_printf(m, "%s: IO=%08X IRQ=%d MaxFrameSize=%u\n", + info->device_name, info->phys_reg_addr, + info->irq_level, info->max_frame_size); + + /* output current serial signal states */ + spin_lock_irqsave(&info->lock,flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + + stat_buf[0] = 0; + stat_buf[1] = 0; + if (info->signals & SerialSignal_RTS) + strcat(stat_buf, "|RTS"); + if (info->signals & SerialSignal_CTS) + strcat(stat_buf, "|CTS"); + if (info->signals & SerialSignal_DTR) + strcat(stat_buf, "|DTR"); + if (info->signals & SerialSignal_DSR) + strcat(stat_buf, "|DSR"); + if (info->signals & SerialSignal_DCD) + strcat(stat_buf, "|CD"); + if (info->signals & SerialSignal_RI) + strcat(stat_buf, "|RI"); + + if (info->params.mode != MGSL_MODE_ASYNC) { + seq_printf(m, "\tHDLC txok:%d rxok:%d", + info->icount.txok, info->icount.rxok); + if (info->icount.txunder) + seq_printf(m, " txunder:%d", info->icount.txunder); + if (info->icount.txabort) + seq_printf(m, " txabort:%d", info->icount.txabort); + if (info->icount.rxshort) + seq_printf(m, " rxshort:%d", info->icount.rxshort); + if (info->icount.rxlong) + seq_printf(m, " rxlong:%d", info->icount.rxlong); + if (info->icount.rxover) + seq_printf(m, " rxover:%d", info->icount.rxover); + if (info->icount.rxcrc) + seq_printf(m, " rxcrc:%d", info->icount.rxcrc); + } else { + seq_printf(m, "\tASYNC tx:%d rx:%d", + info->icount.tx, info->icount.rx); + if (info->icount.frame) + seq_printf(m, " fe:%d", info->icount.frame); + if (info->icount.parity) + seq_printf(m, " pe:%d", info->icount.parity); + if (info->icount.brk) + seq_printf(m, " brk:%d", info->icount.brk); + if (info->icount.overrun) + seq_printf(m, " oe:%d", info->icount.overrun); + } + + /* Append serial signal status to end */ + seq_printf(m, " %s\n", stat_buf+1); + + seq_printf(m, "\ttxactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", + info->tx_active,info->bh_requested,info->bh_running, + info->pending_bh); +} + +/* Called to print information about devices + */ +static int synclink_gt_proc_show(struct seq_file *m, void *v) +{ + struct slgt_info *info; + + seq_puts(m, "synclink_gt driver\n"); + + info = slgt_device_list; + while( info ) { + line_info(m, info); + info = info->next_device; + } + return 0; +} + +static int synclink_gt_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, synclink_gt_proc_show, NULL); +} + +static const struct file_operations synclink_gt_proc_fops = { + .owner = THIS_MODULE, + .open = synclink_gt_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* + * return count of bytes in transmit buffer + */ +static int chars_in_buffer(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + int count; + if (sanity_check(info, tty->name, "chars_in_buffer")) + return 0; + count = tbuf_bytes(info); + DBGINFO(("%s chars_in_buffer()=%d\n", info->device_name, count)); + return count; +} + +/* + * signal remote device to throttle send data (our receive data) + */ +static void throttle(struct tty_struct * tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "throttle")) + return; + DBGINFO(("%s throttle\n", info->device_name)); + if (I_IXOFF(tty)) + send_xchar(tty, STOP_CHAR(tty)); + if (tty->termios->c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->lock,flags); + info->signals &= ~SerialSignal_RTS; + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } +} + +/* + * signal remote device to stop throttling send data (our receive data) + */ +static void unthrottle(struct tty_struct * tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "unthrottle")) + return; + DBGINFO(("%s unthrottle\n", info->device_name)); + if (I_IXOFF(tty)) { + if (info->x_char) + info->x_char = 0; + else + send_xchar(tty, START_CHAR(tty)); + } + if (tty->termios->c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->lock,flags); + info->signals |= SerialSignal_RTS; + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } +} + +/* + * set or clear transmit break condition + * break_state -1=set break condition, 0=clear + */ +static int set_break(struct tty_struct *tty, int break_state) +{ + struct slgt_info *info = tty->driver_data; + unsigned short value; + unsigned long flags; + + if (sanity_check(info, tty->name, "set_break")) + return -EINVAL; + DBGINFO(("%s set_break(%d)\n", info->device_name, break_state)); + + spin_lock_irqsave(&info->lock,flags); + value = rd_reg16(info, TCR); + if (break_state == -1) + value |= BIT6; + else + value &= ~BIT6; + wr_reg16(info, TCR, value); + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +#if SYNCLINK_GENERIC_HDLC + +/** + * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) + * set encoding and frame check sequence (FCS) options + * + * dev pointer to network device structure + * encoding serial encoding setting + * parity FCS setting + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, + unsigned short parity) +{ + struct slgt_info *info = dev_to_port(dev); + unsigned char new_encoding; + unsigned short new_crctype; + + /* return error if TTY interface open */ + if (info->port.count) + return -EBUSY; + + DBGINFO(("%s hdlcdev_attach\n", info->device_name)); + + switch (encoding) + { + case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; + case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; + case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; + case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; + case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; + default: return -EINVAL; + } + + switch (parity) + { + case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; + case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; + case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; + default: return -EINVAL; + } + + info->params.encoding = new_encoding; + info->params.crc_type = new_crctype; + + /* if network interface up, reprogram hardware */ + if (info->netcount) + program_hw(info); + + return 0; +} + +/** + * called by generic HDLC layer to send frame + * + * skb socket buffer containing HDLC frame + * dev pointer to network device structure + */ +static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct slgt_info *info = dev_to_port(dev); + unsigned long flags; + + DBGINFO(("%s hdlc_xmit\n", dev->name)); + + if (!skb->len) + return NETDEV_TX_OK; + + /* stop sending until this frame completes */ + netif_stop_queue(dev); + + /* update network statistics */ + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + + /* save start time for transmit timeout detection */ + dev->trans_start = jiffies; + + spin_lock_irqsave(&info->lock, flags); + tx_load(info, skb->data, skb->len); + spin_unlock_irqrestore(&info->lock, flags); + + /* done with socket buffer, so free it */ + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +/** + * called by network layer when interface enabled + * claim resources and initialize hardware + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_open(struct net_device *dev) +{ + struct slgt_info *info = dev_to_port(dev); + int rc; + unsigned long flags; + + if (!try_module_get(THIS_MODULE)) + return -EBUSY; + + DBGINFO(("%s hdlcdev_open\n", dev->name)); + + /* generic HDLC layer open processing */ + if ((rc = hdlc_open(dev))) + return rc; + + /* arbitrate between network and tty opens */ + spin_lock_irqsave(&info->netlock, flags); + if (info->port.count != 0 || info->netcount != 0) { + DBGINFO(("%s hdlc_open busy\n", dev->name)); + spin_unlock_irqrestore(&info->netlock, flags); + return -EBUSY; + } + info->netcount=1; + spin_unlock_irqrestore(&info->netlock, flags); + + /* claim resources and init adapter */ + if ((rc = startup(info)) != 0) { + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + return rc; + } + + /* assert DTR and RTS, apply hardware settings */ + info->signals |= SerialSignal_RTS + SerialSignal_DTR; + program_hw(info); + + /* enable network layer transmit */ + dev->trans_start = jiffies; + netif_start_queue(dev); + + /* inform generic HDLC layer of current DCD status */ + spin_lock_irqsave(&info->lock, flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock, flags); + if (info->signals & SerialSignal_DCD) + netif_carrier_on(dev); + else + netif_carrier_off(dev); + return 0; +} + +/** + * called by network layer when interface is disabled + * shutdown hardware and release resources + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_close(struct net_device *dev) +{ + struct slgt_info *info = dev_to_port(dev); + unsigned long flags; + + DBGINFO(("%s hdlcdev_close\n", dev->name)); + + netif_stop_queue(dev); + + /* shutdown adapter and release resources */ + shutdown(info); + + hdlc_close(dev); + + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + + module_put(THIS_MODULE); + return 0; +} + +/** + * called by network layer to process IOCTL call to network device + * + * dev pointer to network device structure + * ifr pointer to network interface request structure + * cmd IOCTL command code + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + const size_t size = sizeof(sync_serial_settings); + sync_serial_settings new_line; + sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; + struct slgt_info *info = dev_to_port(dev); + unsigned int flags; + + DBGINFO(("%s hdlcdev_ioctl\n", dev->name)); + + /* return error if TTY interface open */ + if (info->port.count) + return -EBUSY; + + if (cmd != SIOCWANDEV) + return hdlc_ioctl(dev, ifr, cmd); + + memset(&new_line, 0, sizeof(new_line)); + + switch(ifr->ifr_settings.type) { + case IF_GET_IFACE: /* return current sync_serial_settings */ + + ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; + if (ifr->ifr_settings.size < size) { + ifr->ifr_settings.size = size; /* data size wanted */ + return -ENOBUFS; + } + + flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + + switch (flags){ + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; + case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; + default: new_line.clock_type = CLOCK_DEFAULT; + } + + new_line.clock_rate = info->params.clock_speed; + new_line.loopback = info->params.loopback ? 1:0; + + if (copy_to_user(line, &new_line, size)) + return -EFAULT; + return 0; + + case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ + + if(!capable(CAP_NET_ADMIN)) + return -EPERM; + if (copy_from_user(&new_line, line, size)) + return -EFAULT; + + switch (new_line.clock_type) + { + case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; + case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; + case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; + case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; + case CLOCK_DEFAULT: flags = info->params.flags & + (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; + default: return -EINVAL; + } + + if (new_line.loopback != 0 && new_line.loopback != 1) + return -EINVAL; + + info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + info->params.flags |= flags; + + info->params.loopback = new_line.loopback; + + if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) + info->params.clock_speed = new_line.clock_rate; + else + info->params.clock_speed = 0; + + /* if network interface up, reprogram hardware */ + if (info->netcount) + program_hw(info); + return 0; + + default: + return hdlc_ioctl(dev, ifr, cmd); + } +} + +/** + * called by network layer when transmit timeout is detected + * + * dev pointer to network device structure + */ +static void hdlcdev_tx_timeout(struct net_device *dev) +{ + struct slgt_info *info = dev_to_port(dev); + unsigned long flags; + + DBGINFO(("%s hdlcdev_tx_timeout\n", dev->name)); + + dev->stats.tx_errors++; + dev->stats.tx_aborted_errors++; + + spin_lock_irqsave(&info->lock,flags); + tx_stop(info); + spin_unlock_irqrestore(&info->lock,flags); + + netif_wake_queue(dev); +} + +/** + * called by device driver when transmit completes + * reenable network layer transmit if stopped + * + * info pointer to device instance information + */ +static void hdlcdev_tx_done(struct slgt_info *info) +{ + if (netif_queue_stopped(info->netdev)) + netif_wake_queue(info->netdev); +} + +/** + * called by device driver when frame received + * pass frame to network layer + * + * info pointer to device instance information + * buf pointer to buffer contianing frame data + * size count of data bytes in buf + */ +static void hdlcdev_rx(struct slgt_info *info, char *buf, int size) +{ + struct sk_buff *skb = dev_alloc_skb(size); + struct net_device *dev = info->netdev; + + DBGINFO(("%s hdlcdev_rx\n", dev->name)); + + if (skb == NULL) { + DBGERR(("%s: can't alloc skb, drop packet\n", dev->name)); + dev->stats.rx_dropped++; + return; + } + + memcpy(skb_put(skb, size), buf, size); + + skb->protocol = hdlc_type_trans(skb, dev); + + dev->stats.rx_packets++; + dev->stats.rx_bytes += size; + + netif_rx(skb); +} + +static const struct net_device_ops hdlcdev_ops = { + .ndo_open = hdlcdev_open, + .ndo_stop = hdlcdev_close, + .ndo_change_mtu = hdlc_change_mtu, + .ndo_start_xmit = hdlc_start_xmit, + .ndo_do_ioctl = hdlcdev_ioctl, + .ndo_tx_timeout = hdlcdev_tx_timeout, +}; + +/** + * called by device driver when adding device instance + * do generic HDLC initialization + * + * info pointer to device instance information + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_init(struct slgt_info *info) +{ + int rc; + struct net_device *dev; + hdlc_device *hdlc; + + /* allocate and initialize network and HDLC layer objects */ + + if (!(dev = alloc_hdlcdev(info))) { + printk(KERN_ERR "%s hdlc device alloc failure\n", info->device_name); + return -ENOMEM; + } + + /* for network layer reporting purposes only */ + dev->mem_start = info->phys_reg_addr; + dev->mem_end = info->phys_reg_addr + SLGT_REG_SIZE - 1; + dev->irq = info->irq_level; + + /* network layer callbacks and settings */ + dev->netdev_ops = &hdlcdev_ops; + dev->watchdog_timeo = 10 * HZ; + dev->tx_queue_len = 50; + + /* generic HDLC layer callbacks and settings */ + hdlc = dev_to_hdlc(dev); + hdlc->attach = hdlcdev_attach; + hdlc->xmit = hdlcdev_xmit; + + /* register objects with HDLC layer */ + if ((rc = register_hdlc_device(dev))) { + printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); + free_netdev(dev); + return rc; + } + + info->netdev = dev; + return 0; +} + +/** + * called by device driver when removing device instance + * do generic HDLC cleanup + * + * info pointer to device instance information + */ +static void hdlcdev_exit(struct slgt_info *info) +{ + unregister_hdlc_device(info->netdev); + free_netdev(info->netdev); + info->netdev = NULL; +} + +#endif /* ifdef CONFIG_HDLC */ + +/* + * get async data from rx DMA buffers + */ +static void rx_async(struct slgt_info *info) +{ + struct tty_struct *tty = info->port.tty; + struct mgsl_icount *icount = &info->icount; + unsigned int start, end; + unsigned char *p; + unsigned char status; + struct slgt_desc *bufs = info->rbufs; + int i, count; + int chars = 0; + int stat; + unsigned char ch; + + start = end = info->rbuf_current; + + while(desc_complete(bufs[end])) { + count = desc_count(bufs[end]) - info->rbuf_index; + p = bufs[end].buf + info->rbuf_index; + + DBGISR(("%s rx_async count=%d\n", info->device_name, count)); + DBGDATA(info, p, count, "rx"); + + for(i=0 ; i < count; i+=2, p+=2) { + ch = *p; + icount->rx++; + + stat = 0; + + if ((status = *(p+1) & (BIT1 + BIT0))) { + if (status & BIT1) + icount->parity++; + else if (status & BIT0) + icount->frame++; + /* discard char if tty control flags say so */ + if (status & info->ignore_status_mask) + continue; + if (status & BIT1) + stat = TTY_PARITY; + else if (status & BIT0) + stat = TTY_FRAME; + } + if (tty) { + tty_insert_flip_char(tty, ch, stat); + chars++; + } + } + + if (i < count) { + /* receive buffer not completed */ + info->rbuf_index += i; + mod_timer(&info->rx_timer, jiffies + 1); + break; + } + + info->rbuf_index = 0; + free_rbufs(info, end, end); + + if (++end == info->rbuf_count) + end = 0; + + /* if entire list searched then no frame available */ + if (end == start) + break; + } + + if (tty && chars) + tty_flip_buffer_push(tty); +} + +/* + * return next bottom half action to perform + */ +static int bh_action(struct slgt_info *info) +{ + unsigned long flags; + int rc; + + spin_lock_irqsave(&info->lock,flags); + + if (info->pending_bh & BH_RECEIVE) { + info->pending_bh &= ~BH_RECEIVE; + rc = BH_RECEIVE; + } else if (info->pending_bh & BH_TRANSMIT) { + info->pending_bh &= ~BH_TRANSMIT; + rc = BH_TRANSMIT; + } else if (info->pending_bh & BH_STATUS) { + info->pending_bh &= ~BH_STATUS; + rc = BH_STATUS; + } else { + /* Mark BH routine as complete */ + info->bh_running = false; + info->bh_requested = false; + rc = 0; + } + + spin_unlock_irqrestore(&info->lock,flags); + + return rc; +} + +/* + * perform bottom half processing + */ +static void bh_handler(struct work_struct *work) +{ + struct slgt_info *info = container_of(work, struct slgt_info, task); + int action; + + if (!info) + return; + info->bh_running = true; + + while((action = bh_action(info))) { + switch (action) { + case BH_RECEIVE: + DBGBH(("%s bh receive\n", info->device_name)); + switch(info->params.mode) { + case MGSL_MODE_ASYNC: + rx_async(info); + break; + case MGSL_MODE_HDLC: + while(rx_get_frame(info)); + break; + case MGSL_MODE_RAW: + case MGSL_MODE_MONOSYNC: + case MGSL_MODE_BISYNC: + case MGSL_MODE_XSYNC: + while(rx_get_buf(info)); + break; + } + /* restart receiver if rx DMA buffers exhausted */ + if (info->rx_restart) + rx_start(info); + break; + case BH_TRANSMIT: + bh_transmit(info); + break; + case BH_STATUS: + DBGBH(("%s bh status\n", info->device_name)); + info->ri_chkcount = 0; + info->dsr_chkcount = 0; + info->dcd_chkcount = 0; + info->cts_chkcount = 0; + break; + default: + DBGBH(("%s unknown action\n", info->device_name)); + break; + } + } + DBGBH(("%s bh_handler exit\n", info->device_name)); +} + +static void bh_transmit(struct slgt_info *info) +{ + struct tty_struct *tty = info->port.tty; + + DBGBH(("%s bh_transmit\n", info->device_name)); + if (tty) + tty_wakeup(tty); +} + +static void dsr_change(struct slgt_info *info, unsigned short status) +{ + if (status & BIT3) { + info->signals |= SerialSignal_DSR; + info->input_signal_events.dsr_up++; + } else { + info->signals &= ~SerialSignal_DSR; + info->input_signal_events.dsr_down++; + } + DBGISR(("dsr_change %s signals=%04X\n", info->device_name, info->signals)); + if ((info->dsr_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { + slgt_irq_off(info, IRQ_DSR); + return; + } + info->icount.dsr++; + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + info->pending_bh |= BH_STATUS; +} + +static void cts_change(struct slgt_info *info, unsigned short status) +{ + if (status & BIT2) { + info->signals |= SerialSignal_CTS; + info->input_signal_events.cts_up++; + } else { + info->signals &= ~SerialSignal_CTS; + info->input_signal_events.cts_down++; + } + DBGISR(("cts_change %s signals=%04X\n", info->device_name, info->signals)); + if ((info->cts_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { + slgt_irq_off(info, IRQ_CTS); + return; + } + info->icount.cts++; + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + info->pending_bh |= BH_STATUS; + + if (info->port.flags & ASYNC_CTS_FLOW) { + if (info->port.tty) { + if (info->port.tty->hw_stopped) { + if (info->signals & SerialSignal_CTS) { + info->port.tty->hw_stopped = 0; + info->pending_bh |= BH_TRANSMIT; + return; + } + } else { + if (!(info->signals & SerialSignal_CTS)) + info->port.tty->hw_stopped = 1; + } + } + } +} + +static void dcd_change(struct slgt_info *info, unsigned short status) +{ + if (status & BIT1) { + info->signals |= SerialSignal_DCD; + info->input_signal_events.dcd_up++; + } else { + info->signals &= ~SerialSignal_DCD; + info->input_signal_events.dcd_down++; + } + DBGISR(("dcd_change %s signals=%04X\n", info->device_name, info->signals)); + if ((info->dcd_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { + slgt_irq_off(info, IRQ_DCD); + return; + } + info->icount.dcd++; +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) { + if (info->signals & SerialSignal_DCD) + netif_carrier_on(info->netdev); + else + netif_carrier_off(info->netdev); + } +#endif + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + info->pending_bh |= BH_STATUS; + + if (info->port.flags & ASYNC_CHECK_CD) { + if (info->signals & SerialSignal_DCD) + wake_up_interruptible(&info->port.open_wait); + else { + if (info->port.tty) + tty_hangup(info->port.tty); + } + } +} + +static void ri_change(struct slgt_info *info, unsigned short status) +{ + if (status & BIT0) { + info->signals |= SerialSignal_RI; + info->input_signal_events.ri_up++; + } else { + info->signals &= ~SerialSignal_RI; + info->input_signal_events.ri_down++; + } + DBGISR(("ri_change %s signals=%04X\n", info->device_name, info->signals)); + if ((info->ri_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) { + slgt_irq_off(info, IRQ_RI); + return; + } + info->icount.rng++; + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + info->pending_bh |= BH_STATUS; +} + +static void isr_rxdata(struct slgt_info *info) +{ + unsigned int count = info->rbuf_fill_count; + unsigned int i = info->rbuf_fill_index; + unsigned short reg; + + while (rd_reg16(info, SSR) & IRQ_RXDATA) { + reg = rd_reg16(info, RDR); + DBGISR(("isr_rxdata %s RDR=%04X\n", info->device_name, reg)); + if (desc_complete(info->rbufs[i])) { + /* all buffers full */ + rx_stop(info); + info->rx_restart = 1; + continue; + } + info->rbufs[i].buf[count++] = (unsigned char)reg; + /* async mode saves status byte to buffer for each data byte */ + if (info->params.mode == MGSL_MODE_ASYNC) + info->rbufs[i].buf[count++] = (unsigned char)(reg >> 8); + if (count == info->rbuf_fill_level || (reg & BIT10)) { + /* buffer full or end of frame */ + set_desc_count(info->rbufs[i], count); + set_desc_status(info->rbufs[i], BIT15 | (reg >> 8)); + info->rbuf_fill_count = count = 0; + if (++i == info->rbuf_count) + i = 0; + info->pending_bh |= BH_RECEIVE; + } + } + + info->rbuf_fill_index = i; + info->rbuf_fill_count = count; +} + +static void isr_serial(struct slgt_info *info) +{ + unsigned short status = rd_reg16(info, SSR); + + DBGISR(("%s isr_serial status=%04X\n", info->device_name, status)); + + wr_reg16(info, SSR, status); /* clear pending */ + + info->irq_occurred = true; + + if (info->params.mode == MGSL_MODE_ASYNC) { + if (status & IRQ_TXIDLE) { + if (info->tx_active) + isr_txeom(info, status); + } + if (info->rx_pio && (status & IRQ_RXDATA)) + isr_rxdata(info); + if ((status & IRQ_RXBREAK) && (status & RXBREAK)) { + info->icount.brk++; + /* process break detection if tty control allows */ + if (info->port.tty) { + if (!(status & info->ignore_status_mask)) { + if (info->read_status_mask & MASK_BREAK) { + tty_insert_flip_char(info->port.tty, 0, TTY_BREAK); + if (info->port.flags & ASYNC_SAK) + do_SAK(info->port.tty); + } + } + } + } + } else { + if (status & (IRQ_TXIDLE + IRQ_TXUNDER)) + isr_txeom(info, status); + if (info->rx_pio && (status & IRQ_RXDATA)) + isr_rxdata(info); + if (status & IRQ_RXIDLE) { + if (status & RXIDLE) + info->icount.rxidle++; + else + info->icount.exithunt++; + wake_up_interruptible(&info->event_wait_q); + } + + if (status & IRQ_RXOVER) + rx_start(info); + } + + if (status & IRQ_DSR) + dsr_change(info, status); + if (status & IRQ_CTS) + cts_change(info, status); + if (status & IRQ_DCD) + dcd_change(info, status); + if (status & IRQ_RI) + ri_change(info, status); +} + +static void isr_rdma(struct slgt_info *info) +{ + unsigned int status = rd_reg32(info, RDCSR); + + DBGISR(("%s isr_rdma status=%08x\n", info->device_name, status)); + + /* RDCSR (rx DMA control/status) + * + * 31..07 reserved + * 06 save status byte to DMA buffer + * 05 error + * 04 eol (end of list) + * 03 eob (end of buffer) + * 02 IRQ enable + * 01 reset + * 00 enable + */ + wr_reg32(info, RDCSR, status); /* clear pending */ + + if (status & (BIT5 + BIT4)) { + DBGISR(("%s isr_rdma rx_restart=1\n", info->device_name)); + info->rx_restart = true; + } + info->pending_bh |= BH_RECEIVE; +} + +static void isr_tdma(struct slgt_info *info) +{ + unsigned int status = rd_reg32(info, TDCSR); + + DBGISR(("%s isr_tdma status=%08x\n", info->device_name, status)); + + /* TDCSR (tx DMA control/status) + * + * 31..06 reserved + * 05 error + * 04 eol (end of list) + * 03 eob (end of buffer) + * 02 IRQ enable + * 01 reset + * 00 enable + */ + wr_reg32(info, TDCSR, status); /* clear pending */ + + if (status & (BIT5 + BIT4 + BIT3)) { + // another transmit buffer has completed + // run bottom half to get more send data from user + info->pending_bh |= BH_TRANSMIT; + } +} + +/* + * return true if there are unsent tx DMA buffers, otherwise false + * + * if there are unsent buffers then info->tbuf_start + * is set to index of first unsent buffer + */ +static bool unsent_tbufs(struct slgt_info *info) +{ + unsigned int i = info->tbuf_current; + bool rc = false; + + /* + * search backwards from last loaded buffer (precedes tbuf_current) + * for first unsent buffer (desc_count > 0) + */ + + do { + if (i) + i--; + else + i = info->tbuf_count - 1; + if (!desc_count(info->tbufs[i])) + break; + info->tbuf_start = i; + rc = true; + } while (i != info->tbuf_current); + + return rc; +} + +static void isr_txeom(struct slgt_info *info, unsigned short status) +{ + DBGISR(("%s txeom status=%04x\n", info->device_name, status)); + + slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER); + tdma_reset(info); + if (status & IRQ_TXUNDER) { + unsigned short val = rd_reg16(info, TCR); + wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */ + wr_reg16(info, TCR, val); /* clear reset bit */ + } + + if (info->tx_active) { + if (info->params.mode != MGSL_MODE_ASYNC) { + if (status & IRQ_TXUNDER) + info->icount.txunder++; + else if (status & IRQ_TXIDLE) + info->icount.txok++; + } + + if (unsent_tbufs(info)) { + tx_start(info); + update_tx_timer(info); + return; + } + info->tx_active = false; + + del_timer(&info->tx_timer); + + if (info->params.mode != MGSL_MODE_ASYNC && info->drop_rts_on_tx_done) { + info->signals &= ~SerialSignal_RTS; + info->drop_rts_on_tx_done = false; + set_signals(info); + } + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_tx_done(info); + else +#endif + { + if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) { + tx_stop(info); + return; + } + info->pending_bh |= BH_TRANSMIT; + } + } +} + +static void isr_gpio(struct slgt_info *info, unsigned int changed, unsigned int state) +{ + struct cond_wait *w, *prev; + + /* wake processes waiting for specific transitions */ + for (w = info->gpio_wait_q, prev = NULL ; w != NULL ; w = w->next) { + if (w->data & changed) { + w->data = state; + wake_up_interruptible(&w->q); + if (prev != NULL) + prev->next = w->next; + else + info->gpio_wait_q = w->next; + } else + prev = w; + } +} + +/* interrupt service routine + * + * irq interrupt number + * dev_id device ID supplied during interrupt registration + */ +static irqreturn_t slgt_interrupt(int dummy, void *dev_id) +{ + struct slgt_info *info = dev_id; + unsigned int gsr; + unsigned int i; + + DBGISR(("slgt_interrupt irq=%d entry\n", info->irq_level)); + + while((gsr = rd_reg32(info, GSR) & 0xffffff00)) { + DBGISR(("%s gsr=%08x\n", info->device_name, gsr)); + info->irq_occurred = true; + for(i=0; i < info->port_count ; i++) { + if (info->port_array[i] == NULL) + continue; + spin_lock(&info->port_array[i]->lock); + if (gsr & (BIT8 << i)) + isr_serial(info->port_array[i]); + if (gsr & (BIT16 << (i*2))) + isr_rdma(info->port_array[i]); + if (gsr & (BIT17 << (i*2))) + isr_tdma(info->port_array[i]); + spin_unlock(&info->port_array[i]->lock); + } + } + + if (info->gpio_present) { + unsigned int state; + unsigned int changed; + spin_lock(&info->lock); + while ((changed = rd_reg32(info, IOSR)) != 0) { + DBGISR(("%s iosr=%08x\n", info->device_name, changed)); + /* read latched state of GPIO signals */ + state = rd_reg32(info, IOVR); + /* clear pending GPIO interrupt bits */ + wr_reg32(info, IOSR, changed); + for (i=0 ; i < info->port_count ; i++) { + if (info->port_array[i] != NULL) + isr_gpio(info->port_array[i], changed, state); + } + } + spin_unlock(&info->lock); + } + + for(i=0; i < info->port_count ; i++) { + struct slgt_info *port = info->port_array[i]; + if (port == NULL) + continue; + spin_lock(&port->lock); + if ((port->port.count || port->netcount) && + port->pending_bh && !port->bh_running && + !port->bh_requested) { + DBGISR(("%s bh queued\n", port->device_name)); + schedule_work(&port->task); + port->bh_requested = true; + } + spin_unlock(&port->lock); + } + + DBGISR(("slgt_interrupt irq=%d exit\n", info->irq_level)); + return IRQ_HANDLED; +} + +static int startup(struct slgt_info *info) +{ + DBGINFO(("%s startup\n", info->device_name)); + + if (info->port.flags & ASYNC_INITIALIZED) + return 0; + + if (!info->tx_buf) { + info->tx_buf = kmalloc(info->max_frame_size, GFP_KERNEL); + if (!info->tx_buf) { + DBGERR(("%s can't allocate tx buffer\n", info->device_name)); + return -ENOMEM; + } + } + + info->pending_bh = 0; + + memset(&info->icount, 0, sizeof(info->icount)); + + /* program hardware for current parameters */ + change_params(info); + + if (info->port.tty) + clear_bit(TTY_IO_ERROR, &info->port.tty->flags); + + info->port.flags |= ASYNC_INITIALIZED; + + return 0; +} + +/* + * called by close() and hangup() to shutdown hardware + */ +static void shutdown(struct slgt_info *info) +{ + unsigned long flags; + + if (!(info->port.flags & ASYNC_INITIALIZED)) + return; + + DBGINFO(("%s shutdown\n", info->device_name)); + + /* clear status wait queue because status changes */ + /* can't happen after shutting down the hardware */ + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + + del_timer_sync(&info->tx_timer); + del_timer_sync(&info->rx_timer); + + kfree(info->tx_buf); + info->tx_buf = NULL; + + spin_lock_irqsave(&info->lock,flags); + + tx_stop(info); + rx_stop(info); + + slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); + + if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) { + info->signals &= ~(SerialSignal_DTR + SerialSignal_RTS); + set_signals(info); + } + + flush_cond_wait(&info->gpio_wait_q); + + spin_unlock_irqrestore(&info->lock,flags); + + if (info->port.tty) + set_bit(TTY_IO_ERROR, &info->port.tty->flags); + + info->port.flags &= ~ASYNC_INITIALIZED; +} + +static void program_hw(struct slgt_info *info) +{ + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + + rx_stop(info); + tx_stop(info); + + if (info->params.mode != MGSL_MODE_ASYNC || + info->netcount) + sync_mode(info); + else + async_mode(info); + + set_signals(info); + + info->dcd_chkcount = 0; + info->cts_chkcount = 0; + info->ri_chkcount = 0; + info->dsr_chkcount = 0; + + slgt_irq_on(info, IRQ_DCD | IRQ_CTS | IRQ_DSR | IRQ_RI); + get_signals(info); + + if (info->netcount || + (info->port.tty && info->port.tty->termios->c_cflag & CREAD)) + rx_start(info); + + spin_unlock_irqrestore(&info->lock,flags); +} + +/* + * reconfigure adapter based on new parameters + */ +static void change_params(struct slgt_info *info) +{ + unsigned cflag; + int bits_per_char; + + if (!info->port.tty || !info->port.tty->termios) + return; + DBGINFO(("%s change_params\n", info->device_name)); + + cflag = info->port.tty->termios->c_cflag; + + /* if B0 rate (hangup) specified then negate DTR and RTS */ + /* otherwise assert DTR and RTS */ + if (cflag & CBAUD) + info->signals |= SerialSignal_RTS + SerialSignal_DTR; + else + info->signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + + /* byte size and parity */ + + switch (cflag & CSIZE) { + case CS5: info->params.data_bits = 5; break; + case CS6: info->params.data_bits = 6; break; + case CS7: info->params.data_bits = 7; break; + case CS8: info->params.data_bits = 8; break; + default: info->params.data_bits = 7; break; + } + + info->params.stop_bits = (cflag & CSTOPB) ? 2 : 1; + + if (cflag & PARENB) + info->params.parity = (cflag & PARODD) ? ASYNC_PARITY_ODD : ASYNC_PARITY_EVEN; + else + info->params.parity = ASYNC_PARITY_NONE; + + /* calculate number of jiffies to transmit a full + * FIFO (32 bytes) at specified data rate + */ + bits_per_char = info->params.data_bits + + info->params.stop_bits + 1; + + info->params.data_rate = tty_get_baud_rate(info->port.tty); + + if (info->params.data_rate) { + info->timeout = (32*HZ*bits_per_char) / + info->params.data_rate; + } + info->timeout += HZ/50; /* Add .02 seconds of slop */ + + if (cflag & CRTSCTS) + info->port.flags |= ASYNC_CTS_FLOW; + else + info->port.flags &= ~ASYNC_CTS_FLOW; + + if (cflag & CLOCAL) + info->port.flags &= ~ASYNC_CHECK_CD; + else + info->port.flags |= ASYNC_CHECK_CD; + + /* process tty input control flags */ + + info->read_status_mask = IRQ_RXOVER; + if (I_INPCK(info->port.tty)) + info->read_status_mask |= MASK_PARITY | MASK_FRAMING; + if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) + info->read_status_mask |= MASK_BREAK; + if (I_IGNPAR(info->port.tty)) + info->ignore_status_mask |= MASK_PARITY | MASK_FRAMING; + if (I_IGNBRK(info->port.tty)) { + info->ignore_status_mask |= MASK_BREAK; + /* If ignoring parity and break indicators, ignore + * overruns too. (For real raw support). + */ + if (I_IGNPAR(info->port.tty)) + info->ignore_status_mask |= MASK_OVERRUN; + } + + program_hw(info); +} + +static int get_stats(struct slgt_info *info, struct mgsl_icount __user *user_icount) +{ + DBGINFO(("%s get_stats\n", info->device_name)); + if (!user_icount) { + memset(&info->icount, 0, sizeof(info->icount)); + } else { + if (copy_to_user(user_icount, &info->icount, sizeof(struct mgsl_icount))) + return -EFAULT; + } + return 0; +} + +static int get_params(struct slgt_info *info, MGSL_PARAMS __user *user_params) +{ + DBGINFO(("%s get_params\n", info->device_name)); + if (copy_to_user(user_params, &info->params, sizeof(MGSL_PARAMS))) + return -EFAULT; + return 0; +} + +static int set_params(struct slgt_info *info, MGSL_PARAMS __user *new_params) +{ + unsigned long flags; + MGSL_PARAMS tmp_params; + + DBGINFO(("%s set_params\n", info->device_name)); + if (copy_from_user(&tmp_params, new_params, sizeof(MGSL_PARAMS))) + return -EFAULT; + + spin_lock_irqsave(&info->lock, flags); + if (tmp_params.mode == MGSL_MODE_BASE_CLOCK) + info->base_clock = tmp_params.clock_speed; + else + memcpy(&info->params, &tmp_params, sizeof(MGSL_PARAMS)); + spin_unlock_irqrestore(&info->lock, flags); + + program_hw(info); + + return 0; +} + +static int get_txidle(struct slgt_info *info, int __user *idle_mode) +{ + DBGINFO(("%s get_txidle=%d\n", info->device_name, info->idle_mode)); + if (put_user(info->idle_mode, idle_mode)) + return -EFAULT; + return 0; +} + +static int set_txidle(struct slgt_info *info, int idle_mode) +{ + unsigned long flags; + DBGINFO(("%s set_txidle(%d)\n", info->device_name, idle_mode)); + spin_lock_irqsave(&info->lock,flags); + info->idle_mode = idle_mode; + if (info->params.mode != MGSL_MODE_ASYNC) + tx_set_idle(info); + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +static int tx_enable(struct slgt_info *info, int enable) +{ + unsigned long flags; + DBGINFO(("%s tx_enable(%d)\n", info->device_name, enable)); + spin_lock_irqsave(&info->lock,flags); + if (enable) { + if (!info->tx_enabled) + tx_start(info); + } else { + if (info->tx_enabled) + tx_stop(info); + } + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +/* + * abort transmit HDLC frame + */ +static int tx_abort(struct slgt_info *info) +{ + unsigned long flags; + DBGINFO(("%s tx_abort\n", info->device_name)); + spin_lock_irqsave(&info->lock,flags); + tdma_reset(info); + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +static int rx_enable(struct slgt_info *info, int enable) +{ + unsigned long flags; + unsigned int rbuf_fill_level; + DBGINFO(("%s rx_enable(%08x)\n", info->device_name, enable)); + spin_lock_irqsave(&info->lock,flags); + /* + * enable[31..16] = receive DMA buffer fill level + * 0 = noop (leave fill level unchanged) + * fill level must be multiple of 4 and <= buffer size + */ + rbuf_fill_level = ((unsigned int)enable) >> 16; + if (rbuf_fill_level) { + if ((rbuf_fill_level > DMABUFSIZE) || (rbuf_fill_level % 4)) { + spin_unlock_irqrestore(&info->lock, flags); + return -EINVAL; + } + info->rbuf_fill_level = rbuf_fill_level; + if (rbuf_fill_level < 128) + info->rx_pio = 1; /* PIO mode */ + else + info->rx_pio = 0; /* DMA mode */ + rx_stop(info); /* restart receiver to use new fill level */ + } + + /* + * enable[1..0] = receiver enable command + * 0 = disable + * 1 = enable + * 2 = enable or force hunt mode if already enabled + */ + enable &= 3; + if (enable) { + if (!info->rx_enabled) + rx_start(info); + else if (enable == 2) { + /* force hunt mode (write 1 to RCR[3]) */ + wr_reg16(info, RCR, rd_reg16(info, RCR) | BIT3); + } + } else { + if (info->rx_enabled) + rx_stop(info); + } + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +/* + * wait for specified event to occur + */ +static int wait_mgsl_event(struct slgt_info *info, int __user *mask_ptr) +{ + unsigned long flags; + int s; + int rc=0; + struct mgsl_icount cprev, cnow; + int events; + int mask; + struct _input_signal_events oldsigs, newsigs; + DECLARE_WAITQUEUE(wait, current); + + if (get_user(mask, mask_ptr)) + return -EFAULT; + + DBGINFO(("%s wait_mgsl_event(%d)\n", info->device_name, mask)); + + spin_lock_irqsave(&info->lock,flags); + + /* return immediately if state matches requested events */ + get_signals(info); + s = info->signals; + + events = mask & + ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + + ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + + ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + + ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); + if (events) { + spin_unlock_irqrestore(&info->lock,flags); + goto exit; + } + + /* save current irq counts */ + cprev = info->icount; + oldsigs = info->input_signal_events; + + /* enable hunt and idle irqs if needed */ + if (mask & (MgslEvent_ExitHuntMode+MgslEvent_IdleReceived)) { + unsigned short val = rd_reg16(info, SCR); + if (!(val & IRQ_RXIDLE)) + wr_reg16(info, SCR, (unsigned short)(val | IRQ_RXIDLE)); + } + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&info->event_wait_q, &wait); + + spin_unlock_irqrestore(&info->lock,flags); + + for(;;) { + schedule(); + if (signal_pending(current)) { + rc = -ERESTARTSYS; + break; + } + + /* get current irq counts */ + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + newsigs = info->input_signal_events; + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->lock,flags); + + /* if no change, wait aborted for some reason */ + if (newsigs.dsr_up == oldsigs.dsr_up && + newsigs.dsr_down == oldsigs.dsr_down && + newsigs.dcd_up == oldsigs.dcd_up && + newsigs.dcd_down == oldsigs.dcd_down && + newsigs.cts_up == oldsigs.cts_up && + newsigs.cts_down == oldsigs.cts_down && + newsigs.ri_up == oldsigs.ri_up && + newsigs.ri_down == oldsigs.ri_down && + cnow.exithunt == cprev.exithunt && + cnow.rxidle == cprev.rxidle) { + rc = -EIO; + break; + } + + events = mask & + ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + + (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + + (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + + (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + + (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + + (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + + (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + + (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + + (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + + (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); + if (events) + break; + + cprev = cnow; + oldsigs = newsigs; + } + + remove_wait_queue(&info->event_wait_q, &wait); + set_current_state(TASK_RUNNING); + + + if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { + spin_lock_irqsave(&info->lock,flags); + if (!waitqueue_active(&info->event_wait_q)) { + /* disable enable exit hunt mode/idle rcvd IRQs */ + wr_reg16(info, SCR, + (unsigned short)(rd_reg16(info, SCR) & ~IRQ_RXIDLE)); + } + spin_unlock_irqrestore(&info->lock,flags); + } +exit: + if (rc == 0) + rc = put_user(events, mask_ptr); + return rc; +} + +static int get_interface(struct slgt_info *info, int __user *if_mode) +{ + DBGINFO(("%s get_interface=%x\n", info->device_name, info->if_mode)); + if (put_user(info->if_mode, if_mode)) + return -EFAULT; + return 0; +} + +static int set_interface(struct slgt_info *info, int if_mode) +{ + unsigned long flags; + unsigned short val; + + DBGINFO(("%s set_interface=%x)\n", info->device_name, if_mode)); + spin_lock_irqsave(&info->lock,flags); + info->if_mode = if_mode; + + msc_set_vcr(info); + + /* TCR (tx control) 07 1=RTS driver control */ + val = rd_reg16(info, TCR); + if (info->if_mode & MGSL_INTERFACE_RTS_EN) + val |= BIT7; + else + val &= ~BIT7; + wr_reg16(info, TCR, val); + + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +static int get_xsync(struct slgt_info *info, int __user *xsync) +{ + DBGINFO(("%s get_xsync=%x\n", info->device_name, info->xsync)); + if (put_user(info->xsync, xsync)) + return -EFAULT; + return 0; +} + +/* + * set extended sync pattern (1 to 4 bytes) for extended sync mode + * + * sync pattern is contained in least significant bytes of value + * most significant byte of sync pattern is oldest (1st sent/detected) + */ +static int set_xsync(struct slgt_info *info, int xsync) +{ + unsigned long flags; + + DBGINFO(("%s set_xsync=%x)\n", info->device_name, xsync)); + spin_lock_irqsave(&info->lock, flags); + info->xsync = xsync; + wr_reg32(info, XSR, xsync); + spin_unlock_irqrestore(&info->lock, flags); + return 0; +} + +static int get_xctrl(struct slgt_info *info, int __user *xctrl) +{ + DBGINFO(("%s get_xctrl=%x\n", info->device_name, info->xctrl)); + if (put_user(info->xctrl, xctrl)) + return -EFAULT; + return 0; +} + +/* + * set extended control options + * + * xctrl[31:19] reserved, must be zero + * xctrl[18:17] extended sync pattern length in bytes + * 00 = 1 byte in xsr[7:0] + * 01 = 2 bytes in xsr[15:0] + * 10 = 3 bytes in xsr[23:0] + * 11 = 4 bytes in xsr[31:0] + * xctrl[16] 1 = enable terminal count, 0=disabled + * xctrl[15:0] receive terminal count for fixed length packets + * value is count minus one (0 = 1 byte packet) + * when terminal count is reached, receiver + * automatically returns to hunt mode and receive + * FIFO contents are flushed to DMA buffers with + * end of frame (EOF) status + */ +static int set_xctrl(struct slgt_info *info, int xctrl) +{ + unsigned long flags; + + DBGINFO(("%s set_xctrl=%x)\n", info->device_name, xctrl)); + spin_lock_irqsave(&info->lock, flags); + info->xctrl = xctrl; + wr_reg32(info, XCR, xctrl); + spin_unlock_irqrestore(&info->lock, flags); + return 0; +} + +/* + * set general purpose IO pin state and direction + * + * user_gpio fields: + * state each bit indicates a pin state + * smask set bit indicates pin state to set + * dir each bit indicates a pin direction (0=input, 1=output) + * dmask set bit indicates pin direction to set + */ +static int set_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) +{ + unsigned long flags; + struct gpio_desc gpio; + __u32 data; + + if (!info->gpio_present) + return -EINVAL; + if (copy_from_user(&gpio, user_gpio, sizeof(gpio))) + return -EFAULT; + DBGINFO(("%s set_gpio state=%08x smask=%08x dir=%08x dmask=%08x\n", + info->device_name, gpio.state, gpio.smask, + gpio.dir, gpio.dmask)); + + spin_lock_irqsave(&info->port_array[0]->lock, flags); + if (gpio.dmask) { + data = rd_reg32(info, IODR); + data |= gpio.dmask & gpio.dir; + data &= ~(gpio.dmask & ~gpio.dir); + wr_reg32(info, IODR, data); + } + if (gpio.smask) { + data = rd_reg32(info, IOVR); + data |= gpio.smask & gpio.state; + data &= ~(gpio.smask & ~gpio.state); + wr_reg32(info, IOVR, data); + } + spin_unlock_irqrestore(&info->port_array[0]->lock, flags); + + return 0; +} + +/* + * get general purpose IO pin state and direction + */ +static int get_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) +{ + struct gpio_desc gpio; + if (!info->gpio_present) + return -EINVAL; + gpio.state = rd_reg32(info, IOVR); + gpio.smask = 0xffffffff; + gpio.dir = rd_reg32(info, IODR); + gpio.dmask = 0xffffffff; + if (copy_to_user(user_gpio, &gpio, sizeof(gpio))) + return -EFAULT; + DBGINFO(("%s get_gpio state=%08x dir=%08x\n", + info->device_name, gpio.state, gpio.dir)); + return 0; +} + +/* + * conditional wait facility + */ +static void init_cond_wait(struct cond_wait *w, unsigned int data) +{ + init_waitqueue_head(&w->q); + init_waitqueue_entry(&w->wait, current); + w->data = data; +} + +static void add_cond_wait(struct cond_wait **head, struct cond_wait *w) +{ + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&w->q, &w->wait); + w->next = *head; + *head = w; +} + +static void remove_cond_wait(struct cond_wait **head, struct cond_wait *cw) +{ + struct cond_wait *w, *prev; + remove_wait_queue(&cw->q, &cw->wait); + set_current_state(TASK_RUNNING); + for (w = *head, prev = NULL ; w != NULL ; prev = w, w = w->next) { + if (w == cw) { + if (prev != NULL) + prev->next = w->next; + else + *head = w->next; + break; + } + } +} + +static void flush_cond_wait(struct cond_wait **head) +{ + while (*head != NULL) { + wake_up_interruptible(&(*head)->q); + *head = (*head)->next; + } +} + +/* + * wait for general purpose I/O pin(s) to enter specified state + * + * user_gpio fields: + * state - bit indicates target pin state + * smask - set bit indicates watched pin + * + * The wait ends when at least one watched pin enters the specified + * state. When 0 (no error) is returned, user_gpio->state is set to the + * state of all GPIO pins when the wait ends. + * + * Note: Each pin may be a dedicated input, dedicated output, or + * configurable input/output. The number and configuration of pins + * varies with the specific adapter model. Only input pins (dedicated + * or configured) can be monitored with this function. + */ +static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) +{ + unsigned long flags; + int rc = 0; + struct gpio_desc gpio; + struct cond_wait wait; + u32 state; + + if (!info->gpio_present) + return -EINVAL; + if (copy_from_user(&gpio, user_gpio, sizeof(gpio))) + return -EFAULT; + DBGINFO(("%s wait_gpio() state=%08x smask=%08x\n", + info->device_name, gpio.state, gpio.smask)); + /* ignore output pins identified by set IODR bit */ + if ((gpio.smask &= ~rd_reg32(info, IODR)) == 0) + return -EINVAL; + init_cond_wait(&wait, gpio.smask); + + spin_lock_irqsave(&info->port_array[0]->lock, flags); + /* enable interrupts for watched pins */ + wr_reg32(info, IOER, rd_reg32(info, IOER) | gpio.smask); + /* get current pin states */ + state = rd_reg32(info, IOVR); + + if (gpio.smask & ~(state ^ gpio.state)) { + /* already in target state */ + gpio.state = state; + } else { + /* wait for target state */ + add_cond_wait(&info->gpio_wait_q, &wait); + spin_unlock_irqrestore(&info->port_array[0]->lock, flags); + schedule(); + if (signal_pending(current)) + rc = -ERESTARTSYS; + else + gpio.state = wait.data; + spin_lock_irqsave(&info->port_array[0]->lock, flags); + remove_cond_wait(&info->gpio_wait_q, &wait); + } + + /* disable all GPIO interrupts if no waiting processes */ + if (info->gpio_wait_q == NULL) + wr_reg32(info, IOER, 0); + spin_unlock_irqrestore(&info->port_array[0]->lock, flags); + + if ((rc == 0) && copy_to_user(user_gpio, &gpio, sizeof(gpio))) + rc = -EFAULT; + return rc; +} + +static int modem_input_wait(struct slgt_info *info,int arg) +{ + unsigned long flags; + int rc; + struct mgsl_icount cprev, cnow; + DECLARE_WAITQUEUE(wait, current); + + /* save current irq counts */ + spin_lock_irqsave(&info->lock,flags); + cprev = info->icount; + add_wait_queue(&info->status_event_wait_q, &wait); + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->lock,flags); + + for(;;) { + schedule(); + if (signal_pending(current)) { + rc = -ERESTARTSYS; + break; + } + + /* get new irq counts */ + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->lock,flags); + + /* if no change, wait aborted for some reason */ + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { + rc = -EIO; + break; + } + + /* check for change in caller specified modem input */ + if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || + (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || + (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || + (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { + rc = 0; + break; + } + + cprev = cnow; + } + remove_wait_queue(&info->status_event_wait_q, &wait); + set_current_state(TASK_RUNNING); + return rc; +} + +/* + * return state of serial control and status signals + */ +static int tiocmget(struct tty_struct *tty) +{ + struct slgt_info *info = tty->driver_data; + unsigned int result; + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + + result = ((info->signals & SerialSignal_RTS) ? TIOCM_RTS:0) + + ((info->signals & SerialSignal_DTR) ? TIOCM_DTR:0) + + ((info->signals & SerialSignal_DCD) ? TIOCM_CAR:0) + + ((info->signals & SerialSignal_RI) ? TIOCM_RNG:0) + + ((info->signals & SerialSignal_DSR) ? TIOCM_DSR:0) + + ((info->signals & SerialSignal_CTS) ? TIOCM_CTS:0); + + DBGINFO(("%s tiocmget value=%08X\n", info->device_name, result)); + return result; +} + +/* + * set modem control signals (DTR/RTS) + * + * cmd signal command: TIOCMBIS = set bit TIOCMBIC = clear bit + * TIOCMSET = set/clear signal values + * value bit mask for command + */ +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct slgt_info *info = tty->driver_data; + unsigned long flags; + + DBGINFO(("%s tiocmset(%x,%x)\n", info->device_name, set, clear)); + + if (set & TIOCM_RTS) + info->signals |= SerialSignal_RTS; + if (set & TIOCM_DTR) + info->signals |= SerialSignal_DTR; + if (clear & TIOCM_RTS) + info->signals &= ~SerialSignal_RTS; + if (clear & TIOCM_DTR) + info->signals &= ~SerialSignal_DTR; + + spin_lock_irqsave(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +static int carrier_raised(struct tty_port *port) +{ + unsigned long flags; + struct slgt_info *info = container_of(port, struct slgt_info, port); + + spin_lock_irqsave(&info->lock,flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + return (info->signals & SerialSignal_DCD) ? 1 : 0; +} + +static void dtr_rts(struct tty_port *port, int on) +{ + unsigned long flags; + struct slgt_info *info = container_of(port, struct slgt_info, port); + + spin_lock_irqsave(&info->lock,flags); + if (on) + info->signals |= SerialSignal_RTS + SerialSignal_DTR; + else + info->signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); +} + + +/* + * block current process until the device is ready to open + */ +static int block_til_ready(struct tty_struct *tty, struct file *filp, + struct slgt_info *info) +{ + DECLARE_WAITQUEUE(wait, current); + int retval; + bool do_clocal = false; + bool extra_count = false; + unsigned long flags; + int cd; + struct tty_port *port = &info->port; + + DBGINFO(("%s block_til_ready\n", tty->driver->name)); + + if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ + /* nonblock mode is set or port is not enabled */ + port->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + if (tty->termios->c_cflag & CLOCAL) + do_clocal = true; + + /* Wait for carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, port->count is dropped by one, so that + * close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + + retval = 0; + add_wait_queue(&port->open_wait, &wait); + + spin_lock_irqsave(&info->lock, flags); + if (!tty_hung_up_p(filp)) { + extra_count = true; + port->count--; + } + spin_unlock_irqrestore(&info->lock, flags); + port->blocked_open++; + + while (1) { + if ((tty->termios->c_cflag & CBAUD)) + tty_port_raise_dtr_rts(port); + + set_current_state(TASK_INTERRUPTIBLE); + + if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){ + retval = (port->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS; + break; + } + + cd = tty_port_carrier_raised(port); + + if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd )) + break; + + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + + DBGINFO(("%s block_til_ready wait\n", tty->driver->name)); + tty_unlock(); + schedule(); + tty_lock(); + } + + set_current_state(TASK_RUNNING); + remove_wait_queue(&port->open_wait, &wait); + + if (extra_count) + port->count++; + port->blocked_open--; + + if (!retval) + port->flags |= ASYNC_NORMAL_ACTIVE; + + DBGINFO(("%s block_til_ready ready, rc=%d\n", tty->driver->name, retval)); + return retval; +} + +static int alloc_tmp_rbuf(struct slgt_info *info) +{ + info->tmp_rbuf = kmalloc(info->max_frame_size + 5, GFP_KERNEL); + if (info->tmp_rbuf == NULL) + return -ENOMEM; + return 0; +} + +static void free_tmp_rbuf(struct slgt_info *info) +{ + kfree(info->tmp_rbuf); + info->tmp_rbuf = NULL; +} + +/* + * allocate DMA descriptor lists. + */ +static int alloc_desc(struct slgt_info *info) +{ + unsigned int i; + unsigned int pbufs; + + /* allocate memory to hold descriptor lists */ + info->bufs = pci_alloc_consistent(info->pdev, DESC_LIST_SIZE, &info->bufs_dma_addr); + if (info->bufs == NULL) + return -ENOMEM; + + memset(info->bufs, 0, DESC_LIST_SIZE); + + info->rbufs = (struct slgt_desc*)info->bufs; + info->tbufs = ((struct slgt_desc*)info->bufs) + info->rbuf_count; + + pbufs = (unsigned int)info->bufs_dma_addr; + + /* + * Build circular lists of descriptors + */ + + for (i=0; i < info->rbuf_count; i++) { + /* physical address of this descriptor */ + info->rbufs[i].pdesc = pbufs + (i * sizeof(struct slgt_desc)); + + /* physical address of next descriptor */ + if (i == info->rbuf_count - 1) + info->rbufs[i].next = cpu_to_le32(pbufs); + else + info->rbufs[i].next = cpu_to_le32(pbufs + ((i+1) * sizeof(struct slgt_desc))); + set_desc_count(info->rbufs[i], DMABUFSIZE); + } + + for (i=0; i < info->tbuf_count; i++) { + /* physical address of this descriptor */ + info->tbufs[i].pdesc = pbufs + ((info->rbuf_count + i) * sizeof(struct slgt_desc)); + + /* physical address of next descriptor */ + if (i == info->tbuf_count - 1) + info->tbufs[i].next = cpu_to_le32(pbufs + info->rbuf_count * sizeof(struct slgt_desc)); + else + info->tbufs[i].next = cpu_to_le32(pbufs + ((info->rbuf_count + i + 1) * sizeof(struct slgt_desc))); + } + + return 0; +} + +static void free_desc(struct slgt_info *info) +{ + if (info->bufs != NULL) { + pci_free_consistent(info->pdev, DESC_LIST_SIZE, info->bufs, info->bufs_dma_addr); + info->bufs = NULL; + info->rbufs = NULL; + info->tbufs = NULL; + } +} + +static int alloc_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count) +{ + int i; + for (i=0; i < count; i++) { + if ((bufs[i].buf = pci_alloc_consistent(info->pdev, DMABUFSIZE, &bufs[i].buf_dma_addr)) == NULL) + return -ENOMEM; + bufs[i].pbuf = cpu_to_le32((unsigned int)bufs[i].buf_dma_addr); + } + return 0; +} + +static void free_bufs(struct slgt_info *info, struct slgt_desc *bufs, int count) +{ + int i; + for (i=0; i < count; i++) { + if (bufs[i].buf == NULL) + continue; + pci_free_consistent(info->pdev, DMABUFSIZE, bufs[i].buf, bufs[i].buf_dma_addr); + bufs[i].buf = NULL; + } +} + +static int alloc_dma_bufs(struct slgt_info *info) +{ + info->rbuf_count = 32; + info->tbuf_count = 32; + + if (alloc_desc(info) < 0 || + alloc_bufs(info, info->rbufs, info->rbuf_count) < 0 || + alloc_bufs(info, info->tbufs, info->tbuf_count) < 0 || + alloc_tmp_rbuf(info) < 0) { + DBGERR(("%s DMA buffer alloc fail\n", info->device_name)); + return -ENOMEM; + } + reset_rbufs(info); + return 0; +} + +static void free_dma_bufs(struct slgt_info *info) +{ + if (info->bufs) { + free_bufs(info, info->rbufs, info->rbuf_count); + free_bufs(info, info->tbufs, info->tbuf_count); + free_desc(info); + } + free_tmp_rbuf(info); +} + +static int claim_resources(struct slgt_info *info) +{ + if (request_mem_region(info->phys_reg_addr, SLGT_REG_SIZE, "synclink_gt") == NULL) { + DBGERR(("%s reg addr conflict, addr=%08X\n", + info->device_name, info->phys_reg_addr)); + info->init_error = DiagStatus_AddressConflict; + goto errout; + } + else + info->reg_addr_requested = true; + + info->reg_addr = ioremap_nocache(info->phys_reg_addr, SLGT_REG_SIZE); + if (!info->reg_addr) { + DBGERR(("%s cant map device registers, addr=%08X\n", + info->device_name, info->phys_reg_addr)); + info->init_error = DiagStatus_CantAssignPciResources; + goto errout; + } + return 0; + +errout: + release_resources(info); + return -ENODEV; +} + +static void release_resources(struct slgt_info *info) +{ + if (info->irq_requested) { + free_irq(info->irq_level, info); + info->irq_requested = false; + } + + if (info->reg_addr_requested) { + release_mem_region(info->phys_reg_addr, SLGT_REG_SIZE); + info->reg_addr_requested = false; + } + + if (info->reg_addr) { + iounmap(info->reg_addr); + info->reg_addr = NULL; + } +} + +/* Add the specified device instance data structure to the + * global linked list of devices and increment the device count. + */ +static void add_device(struct slgt_info *info) +{ + char *devstr; + + info->next_device = NULL; + info->line = slgt_device_count; + sprintf(info->device_name, "%s%d", tty_dev_prefix, info->line); + + if (info->line < MAX_DEVICES) { + if (maxframe[info->line]) + info->max_frame_size = maxframe[info->line]; + } + + slgt_device_count++; + + if (!slgt_device_list) + slgt_device_list = info; + else { + struct slgt_info *current_dev = slgt_device_list; + while(current_dev->next_device) + current_dev = current_dev->next_device; + current_dev->next_device = info; + } + + if (info->max_frame_size < 4096) + info->max_frame_size = 4096; + else if (info->max_frame_size > 65535) + info->max_frame_size = 65535; + + switch(info->pdev->device) { + case SYNCLINK_GT_DEVICE_ID: + devstr = "GT"; + break; + case SYNCLINK_GT2_DEVICE_ID: + devstr = "GT2"; + break; + case SYNCLINK_GT4_DEVICE_ID: + devstr = "GT4"; + break; + case SYNCLINK_AC_DEVICE_ID: + devstr = "AC"; + info->params.mode = MGSL_MODE_ASYNC; + break; + default: + devstr = "(unknown model)"; + } + printk("SyncLink %s %s IO=%08x IRQ=%d MaxFrameSize=%u\n", + devstr, info->device_name, info->phys_reg_addr, + info->irq_level, info->max_frame_size); + +#if SYNCLINK_GENERIC_HDLC + hdlcdev_init(info); +#endif +} + +static const struct tty_port_operations slgt_port_ops = { + .carrier_raised = carrier_raised, + .dtr_rts = dtr_rts, +}; + +/* + * allocate device instance structure, return NULL on failure + */ +static struct slgt_info *alloc_dev(int adapter_num, int port_num, struct pci_dev *pdev) +{ + struct slgt_info *info; + + info = kzalloc(sizeof(struct slgt_info), GFP_KERNEL); + + if (!info) { + DBGERR(("%s device alloc failed adapter=%d port=%d\n", + driver_name, adapter_num, port_num)); + } else { + tty_port_init(&info->port); + info->port.ops = &slgt_port_ops; + info->magic = MGSL_MAGIC; + INIT_WORK(&info->task, bh_handler); + info->max_frame_size = 4096; + info->base_clock = 14745600; + info->rbuf_fill_level = DMABUFSIZE; + info->port.close_delay = 5*HZ/10; + info->port.closing_wait = 30*HZ; + init_waitqueue_head(&info->status_event_wait_q); + init_waitqueue_head(&info->event_wait_q); + spin_lock_init(&info->netlock); + memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); + info->idle_mode = HDLC_TXIDLE_FLAGS; + info->adapter_num = adapter_num; + info->port_num = port_num; + + setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info); + setup_timer(&info->rx_timer, rx_timeout, (unsigned long)info); + + /* Copy configuration info to device instance data */ + info->pdev = pdev; + info->irq_level = pdev->irq; + info->phys_reg_addr = pci_resource_start(pdev,0); + + info->bus_type = MGSL_BUS_TYPE_PCI; + info->irq_flags = IRQF_SHARED; + + info->init_error = -1; /* assume error, set to 0 on successful init */ + } + + return info; +} + +static void device_init(int adapter_num, struct pci_dev *pdev) +{ + struct slgt_info *port_array[SLGT_MAX_PORTS]; + int i; + int port_count = 1; + + if (pdev->device == SYNCLINK_GT2_DEVICE_ID) + port_count = 2; + else if (pdev->device == SYNCLINK_GT4_DEVICE_ID) + port_count = 4; + + /* allocate device instances for all ports */ + for (i=0; i < port_count; ++i) { + port_array[i] = alloc_dev(adapter_num, i, pdev); + if (port_array[i] == NULL) { + for (--i; i >= 0; --i) + kfree(port_array[i]); + return; + } + } + + /* give copy of port_array to all ports and add to device list */ + for (i=0; i < port_count; ++i) { + memcpy(port_array[i]->port_array, port_array, sizeof(port_array)); + add_device(port_array[i]); + port_array[i]->port_count = port_count; + spin_lock_init(&port_array[i]->lock); + } + + /* Allocate and claim adapter resources */ + if (!claim_resources(port_array[0])) { + + alloc_dma_bufs(port_array[0]); + + /* copy resource information from first port to others */ + for (i = 1; i < port_count; ++i) { + port_array[i]->irq_level = port_array[0]->irq_level; + port_array[i]->reg_addr = port_array[0]->reg_addr; + alloc_dma_bufs(port_array[i]); + } + + if (request_irq(port_array[0]->irq_level, + slgt_interrupt, + port_array[0]->irq_flags, + port_array[0]->device_name, + port_array[0]) < 0) { + DBGERR(("%s request_irq failed IRQ=%d\n", + port_array[0]->device_name, + port_array[0]->irq_level)); + } else { + port_array[0]->irq_requested = true; + adapter_test(port_array[0]); + for (i=1 ; i < port_count ; i++) { + port_array[i]->init_error = port_array[0]->init_error; + port_array[i]->gpio_present = port_array[0]->gpio_present; + } + } + } + + for (i=0; i < port_count; ++i) + tty_register_device(serial_driver, port_array[i]->line, &(port_array[i]->pdev->dev)); +} + +static int __devinit init_one(struct pci_dev *dev, + const struct pci_device_id *ent) +{ + if (pci_enable_device(dev)) { + printk("error enabling pci device %p\n", dev); + return -EIO; + } + pci_set_master(dev); + device_init(slgt_device_count, dev); + return 0; +} + +static void __devexit remove_one(struct pci_dev *dev) +{ +} + +static const struct tty_operations ops = { + .open = open, + .close = close, + .write = write, + .put_char = put_char, + .flush_chars = flush_chars, + .write_room = write_room, + .chars_in_buffer = chars_in_buffer, + .flush_buffer = flush_buffer, + .ioctl = ioctl, + .compat_ioctl = slgt_compat_ioctl, + .throttle = throttle, + .unthrottle = unthrottle, + .send_xchar = send_xchar, + .break_ctl = set_break, + .wait_until_sent = wait_until_sent, + .set_termios = set_termios, + .stop = tx_hold, + .start = tx_release, + .hangup = hangup, + .tiocmget = tiocmget, + .tiocmset = tiocmset, + .get_icount = get_icount, + .proc_fops = &synclink_gt_proc_fops, +}; + +static void slgt_cleanup(void) +{ + int rc; + struct slgt_info *info; + struct slgt_info *tmp; + + printk(KERN_INFO "unload %s\n", driver_name); + + if (serial_driver) { + for (info=slgt_device_list ; info != NULL ; info=info->next_device) + tty_unregister_device(serial_driver, info->line); + if ((rc = tty_unregister_driver(serial_driver))) + DBGERR(("tty_unregister_driver error=%d\n", rc)); + put_tty_driver(serial_driver); + } + + /* reset devices */ + info = slgt_device_list; + while(info) { + reset_port(info); + info = info->next_device; + } + + /* release devices */ + info = slgt_device_list; + while(info) { +#if SYNCLINK_GENERIC_HDLC + hdlcdev_exit(info); +#endif + free_dma_bufs(info); + free_tmp_rbuf(info); + if (info->port_num == 0) + release_resources(info); + tmp = info; + info = info->next_device; + kfree(tmp); + } + + if (pci_registered) + pci_unregister_driver(&pci_driver); +} + +/* + * Driver initialization entry point. + */ +static int __init slgt_init(void) +{ + int rc; + + printk(KERN_INFO "%s\n", driver_name); + + serial_driver = alloc_tty_driver(MAX_DEVICES); + if (!serial_driver) { + printk("%s can't allocate tty driver\n", driver_name); + return -ENOMEM; + } + + /* Initialize the tty_driver structure */ + + serial_driver->owner = THIS_MODULE; + serial_driver->driver_name = tty_driver_name; + serial_driver->name = tty_dev_prefix; + serial_driver->major = ttymajor; + serial_driver->minor_start = 64; + serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + serial_driver->subtype = SERIAL_TYPE_NORMAL; + serial_driver->init_termios = tty_std_termios; + serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + serial_driver->init_termios.c_ispeed = 9600; + serial_driver->init_termios.c_ospeed = 9600; + serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + tty_set_operations(serial_driver, &ops); + if ((rc = tty_register_driver(serial_driver)) < 0) { + DBGERR(("%s can't register serial driver\n", driver_name)); + put_tty_driver(serial_driver); + serial_driver = NULL; + goto error; + } + + printk(KERN_INFO "%s, tty major#%d\n", + driver_name, serial_driver->major); + + slgt_device_count = 0; + if ((rc = pci_register_driver(&pci_driver)) < 0) { + printk("%s pci_register_driver error=%d\n", driver_name, rc); + goto error; + } + pci_registered = true; + + if (!slgt_device_list) + printk("%s no devices found\n",driver_name); + + return 0; + +error: + slgt_cleanup(); + return rc; +} + +static void __exit slgt_exit(void) +{ + slgt_cleanup(); +} + +module_init(slgt_init); +module_exit(slgt_exit); + +/* + * register access routines + */ + +#define CALC_REGADDR() \ + unsigned long reg_addr = ((unsigned long)info->reg_addr) + addr; \ + if (addr >= 0x80) \ + reg_addr += (info->port_num) * 32; \ + else if (addr >= 0x40) \ + reg_addr += (info->port_num) * 16; + +static __u8 rd_reg8(struct slgt_info *info, unsigned int addr) +{ + CALC_REGADDR(); + return readb((void __iomem *)reg_addr); +} + +static void wr_reg8(struct slgt_info *info, unsigned int addr, __u8 value) +{ + CALC_REGADDR(); + writeb(value, (void __iomem *)reg_addr); +} + +static __u16 rd_reg16(struct slgt_info *info, unsigned int addr) +{ + CALC_REGADDR(); + return readw((void __iomem *)reg_addr); +} + +static void wr_reg16(struct slgt_info *info, unsigned int addr, __u16 value) +{ + CALC_REGADDR(); + writew(value, (void __iomem *)reg_addr); +} + +static __u32 rd_reg32(struct slgt_info *info, unsigned int addr) +{ + CALC_REGADDR(); + return readl((void __iomem *)reg_addr); +} + +static void wr_reg32(struct slgt_info *info, unsigned int addr, __u32 value) +{ + CALC_REGADDR(); + writel(value, (void __iomem *)reg_addr); +} + +static void rdma_reset(struct slgt_info *info) +{ + unsigned int i; + + /* set reset bit */ + wr_reg32(info, RDCSR, BIT1); + + /* wait for enable bit cleared */ + for(i=0 ; i < 1000 ; i++) + if (!(rd_reg32(info, RDCSR) & BIT0)) + break; +} + +static void tdma_reset(struct slgt_info *info) +{ + unsigned int i; + + /* set reset bit */ + wr_reg32(info, TDCSR, BIT1); + + /* wait for enable bit cleared */ + for(i=0 ; i < 1000 ; i++) + if (!(rd_reg32(info, TDCSR) & BIT0)) + break; +} + +/* + * enable internal loopback + * TxCLK and RxCLK are generated from BRG + * and TxD is looped back to RxD internally. + */ +static void enable_loopback(struct slgt_info *info) +{ + /* SCR (serial control) BIT2=looopback enable */ + wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT2)); + + if (info->params.mode != MGSL_MODE_ASYNC) { + /* CCR (clock control) + * 07..05 tx clock source (010 = BRG) + * 04..02 rx clock source (010 = BRG) + * 01 auxclk enable (0 = disable) + * 00 BRG enable (1 = enable) + * + * 0100 1001 + */ + wr_reg8(info, CCR, 0x49); + + /* set speed if available, otherwise use default */ + if (info->params.clock_speed) + set_rate(info, info->params.clock_speed); + else + set_rate(info, 3686400); + } +} + +/* + * set baud rate generator to specified rate + */ +static void set_rate(struct slgt_info *info, u32 rate) +{ + unsigned int div; + unsigned int osc = info->base_clock; + + /* div = osc/rate - 1 + * + * Round div up if osc/rate is not integer to + * force to next slowest rate. + */ + + if (rate) { + div = osc/rate; + if (!(osc % rate) && div) + div--; + wr_reg16(info, BDR, (unsigned short)div); + } +} + +static void rx_stop(struct slgt_info *info) +{ + unsigned short val; + + /* disable and reset receiver */ + val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */ + wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */ + wr_reg16(info, RCR, val); /* clear reset bit */ + + slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA + IRQ_RXIDLE); + + /* clear pending rx interrupts */ + wr_reg16(info, SSR, IRQ_RXIDLE + IRQ_RXOVER); + + rdma_reset(info); + + info->rx_enabled = false; + info->rx_restart = false; +} + +static void rx_start(struct slgt_info *info) +{ + unsigned short val; + + slgt_irq_off(info, IRQ_RXOVER + IRQ_RXDATA); + + /* clear pending rx overrun IRQ */ + wr_reg16(info, SSR, IRQ_RXOVER); + + /* reset and disable receiver */ + val = rd_reg16(info, RCR) & ~BIT1; /* clear enable bit */ + wr_reg16(info, RCR, (unsigned short)(val | BIT2)); /* set reset bit */ + wr_reg16(info, RCR, val); /* clear reset bit */ + + rdma_reset(info); + reset_rbufs(info); + + if (info->rx_pio) { + /* rx request when rx FIFO not empty */ + wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) & ~BIT14)); + slgt_irq_on(info, IRQ_RXDATA); + if (info->params.mode == MGSL_MODE_ASYNC) { + /* enable saving of rx status */ + wr_reg32(info, RDCSR, BIT6); + } + } else { + /* rx request when rx FIFO half full */ + wr_reg16(info, SCR, (unsigned short)(rd_reg16(info, SCR) | BIT14)); + /* set 1st descriptor address */ + wr_reg32(info, RDDAR, info->rbufs[0].pdesc); + + if (info->params.mode != MGSL_MODE_ASYNC) { + /* enable rx DMA and DMA interrupt */ + wr_reg32(info, RDCSR, (BIT2 + BIT0)); + } else { + /* enable saving of rx status, rx DMA and DMA interrupt */ + wr_reg32(info, RDCSR, (BIT6 + BIT2 + BIT0)); + } + } + + slgt_irq_on(info, IRQ_RXOVER); + + /* enable receiver */ + wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | BIT1)); + + info->rx_restart = false; + info->rx_enabled = true; +} + +static void tx_start(struct slgt_info *info) +{ + if (!info->tx_enabled) { + wr_reg16(info, TCR, + (unsigned short)((rd_reg16(info, TCR) | BIT1) & ~BIT2)); + info->tx_enabled = true; + } + + if (desc_count(info->tbufs[info->tbuf_start])) { + info->drop_rts_on_tx_done = false; + + if (info->params.mode != MGSL_MODE_ASYNC) { + if (info->params.flags & HDLC_FLAG_AUTO_RTS) { + get_signals(info); + if (!(info->signals & SerialSignal_RTS)) { + info->signals |= SerialSignal_RTS; + set_signals(info); + info->drop_rts_on_tx_done = true; + } + } + + slgt_irq_off(info, IRQ_TXDATA); + slgt_irq_on(info, IRQ_TXUNDER + IRQ_TXIDLE); + /* clear tx idle and underrun status bits */ + wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER)); + } else { + slgt_irq_off(info, IRQ_TXDATA); + slgt_irq_on(info, IRQ_TXIDLE); + /* clear tx idle status bit */ + wr_reg16(info, SSR, IRQ_TXIDLE); + } + /* set 1st descriptor address and start DMA */ + wr_reg32(info, TDDAR, info->tbufs[info->tbuf_start].pdesc); + wr_reg32(info, TDCSR, BIT2 + BIT0); + info->tx_active = true; + } +} + +static void tx_stop(struct slgt_info *info) +{ + unsigned short val; + + del_timer(&info->tx_timer); + + tdma_reset(info); + + /* reset and disable transmitter */ + val = rd_reg16(info, TCR) & ~BIT1; /* clear enable bit */ + wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */ + + slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER); + + /* clear tx idle and underrun status bit */ + wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER)); + + reset_tbufs(info); + + info->tx_enabled = false; + info->tx_active = false; +} + +static void reset_port(struct slgt_info *info) +{ + if (!info->reg_addr) + return; + + tx_stop(info); + rx_stop(info); + + info->signals &= ~(SerialSignal_DTR + SerialSignal_RTS); + set_signals(info); + + slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); +} + +static void reset_adapter(struct slgt_info *info) +{ + int i; + for (i=0; i < info->port_count; ++i) { + if (info->port_array[i]) + reset_port(info->port_array[i]); + } +} + +static void async_mode(struct slgt_info *info) +{ + unsigned short val; + + slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); + tx_stop(info); + rx_stop(info); + + /* TCR (tx control) + * + * 15..13 mode, 010=async + * 12..10 encoding, 000=NRZ + * 09 parity enable + * 08 1=odd parity, 0=even parity + * 07 1=RTS driver control + * 06 1=break enable + * 05..04 character length + * 00=5 bits + * 01=6 bits + * 10=7 bits + * 11=8 bits + * 03 0=1 stop bit, 1=2 stop bits + * 02 reset + * 01 enable + * 00 auto-CTS enable + */ + val = 0x4000; + + if (info->if_mode & MGSL_INTERFACE_RTS_EN) + val |= BIT7; + + if (info->params.parity != ASYNC_PARITY_NONE) { + val |= BIT9; + if (info->params.parity == ASYNC_PARITY_ODD) + val |= BIT8; + } + + switch (info->params.data_bits) + { + case 6: val |= BIT4; break; + case 7: val |= BIT5; break; + case 8: val |= BIT5 + BIT4; break; + } + + if (info->params.stop_bits != 1) + val |= BIT3; + + if (info->params.flags & HDLC_FLAG_AUTO_CTS) + val |= BIT0; + + wr_reg16(info, TCR, val); + + /* RCR (rx control) + * + * 15..13 mode, 010=async + * 12..10 encoding, 000=NRZ + * 09 parity enable + * 08 1=odd parity, 0=even parity + * 07..06 reserved, must be 0 + * 05..04 character length + * 00=5 bits + * 01=6 bits + * 10=7 bits + * 11=8 bits + * 03 reserved, must be zero + * 02 reset + * 01 enable + * 00 auto-DCD enable + */ + val = 0x4000; + + if (info->params.parity != ASYNC_PARITY_NONE) { + val |= BIT9; + if (info->params.parity == ASYNC_PARITY_ODD) + val |= BIT8; + } + + switch (info->params.data_bits) + { + case 6: val |= BIT4; break; + case 7: val |= BIT5; break; + case 8: val |= BIT5 + BIT4; break; + } + + if (info->params.flags & HDLC_FLAG_AUTO_DCD) + val |= BIT0; + + wr_reg16(info, RCR, val); + + /* CCR (clock control) + * + * 07..05 011 = tx clock source is BRG/16 + * 04..02 010 = rx clock source is BRG + * 01 0 = auxclk disabled + * 00 1 = BRG enabled + * + * 0110 1001 + */ + wr_reg8(info, CCR, 0x69); + + msc_set_vcr(info); + + /* SCR (serial control) + * + * 15 1=tx req on FIFO half empty + * 14 1=rx req on FIFO half full + * 13 tx data IRQ enable + * 12 tx idle IRQ enable + * 11 rx break on IRQ enable + * 10 rx data IRQ enable + * 09 rx break off IRQ enable + * 08 overrun IRQ enable + * 07 DSR IRQ enable + * 06 CTS IRQ enable + * 05 DCD IRQ enable + * 04 RI IRQ enable + * 03 0=16x sampling, 1=8x sampling + * 02 1=txd->rxd internal loopback enable + * 01 reserved, must be zero + * 00 1=master IRQ enable + */ + val = BIT15 + BIT14 + BIT0; + /* JCR[8] : 1 = x8 async mode feature available */ + if ((rd_reg32(info, JCR) & BIT8) && info->params.data_rate && + ((info->base_clock < (info->params.data_rate * 16)) || + (info->base_clock % (info->params.data_rate * 16)))) { + /* use 8x sampling */ + val |= BIT3; + set_rate(info, info->params.data_rate * 8); + } else { + /* use 16x sampling */ + set_rate(info, info->params.data_rate * 16); + } + wr_reg16(info, SCR, val); + + slgt_irq_on(info, IRQ_RXBREAK | IRQ_RXOVER); + + if (info->params.loopback) + enable_loopback(info); +} + +static void sync_mode(struct slgt_info *info) +{ + unsigned short val; + + slgt_irq_off(info, IRQ_ALL | IRQ_MASTER); + tx_stop(info); + rx_stop(info); + + /* TCR (tx control) + * + * 15..13 mode + * 000=HDLC/SDLC + * 001=raw bit synchronous + * 010=asynchronous/isochronous + * 011=monosync byte synchronous + * 100=bisync byte synchronous + * 101=xsync byte synchronous + * 12..10 encoding + * 09 CRC enable + * 08 CRC32 + * 07 1=RTS driver control + * 06 preamble enable + * 05..04 preamble length + * 03 share open/close flag + * 02 reset + * 01 enable + * 00 auto-CTS enable + */ + val = BIT2; + + switch(info->params.mode) { + case MGSL_MODE_XSYNC: + val |= BIT15 + BIT13; + break; + case MGSL_MODE_MONOSYNC: val |= BIT14 + BIT13; break; + case MGSL_MODE_BISYNC: val |= BIT15; break; + case MGSL_MODE_RAW: val |= BIT13; break; + } + if (info->if_mode & MGSL_INTERFACE_RTS_EN) + val |= BIT7; + + switch(info->params.encoding) + { + case HDLC_ENCODING_NRZB: val |= BIT10; break; + case HDLC_ENCODING_NRZI_MARK: val |= BIT11; break; + case HDLC_ENCODING_NRZI: val |= BIT11 + BIT10; break; + case HDLC_ENCODING_BIPHASE_MARK: val |= BIT12; break; + case HDLC_ENCODING_BIPHASE_SPACE: val |= BIT12 + BIT10; break; + case HDLC_ENCODING_BIPHASE_LEVEL: val |= BIT12 + BIT11; break; + case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: val |= BIT12 + BIT11 + BIT10; break; + } + + switch (info->params.crc_type & HDLC_CRC_MASK) + { + case HDLC_CRC_16_CCITT: val |= BIT9; break; + case HDLC_CRC_32_CCITT: val |= BIT9 + BIT8; break; + } + + if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE) + val |= BIT6; + + switch (info->params.preamble_length) + { + case HDLC_PREAMBLE_LENGTH_16BITS: val |= BIT5; break; + case HDLC_PREAMBLE_LENGTH_32BITS: val |= BIT4; break; + case HDLC_PREAMBLE_LENGTH_64BITS: val |= BIT5 + BIT4; break; + } + + if (info->params.flags & HDLC_FLAG_AUTO_CTS) + val |= BIT0; + + wr_reg16(info, TCR, val); + + /* TPR (transmit preamble) */ + + switch (info->params.preamble) + { + case HDLC_PREAMBLE_PATTERN_FLAGS: val = 0x7e; break; + case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break; + case HDLC_PREAMBLE_PATTERN_ZEROS: val = 0x00; break; + case HDLC_PREAMBLE_PATTERN_10: val = 0x55; break; + case HDLC_PREAMBLE_PATTERN_01: val = 0xaa; break; + default: val = 0x7e; break; + } + wr_reg8(info, TPR, (unsigned char)val); + + /* RCR (rx control) + * + * 15..13 mode + * 000=HDLC/SDLC + * 001=raw bit synchronous + * 010=asynchronous/isochronous + * 011=monosync byte synchronous + * 100=bisync byte synchronous + * 101=xsync byte synchronous + * 12..10 encoding + * 09 CRC enable + * 08 CRC32 + * 07..03 reserved, must be 0 + * 02 reset + * 01 enable + * 00 auto-DCD enable + */ + val = 0; + + switch(info->params.mode) { + case MGSL_MODE_XSYNC: + val |= BIT15 + BIT13; + break; + case MGSL_MODE_MONOSYNC: val |= BIT14 + BIT13; break; + case MGSL_MODE_BISYNC: val |= BIT15; break; + case MGSL_MODE_RAW: val |= BIT13; break; + } + + switch(info->params.encoding) + { + case HDLC_ENCODING_NRZB: val |= BIT10; break; + case HDLC_ENCODING_NRZI_MARK: val |= BIT11; break; + case HDLC_ENCODING_NRZI: val |= BIT11 + BIT10; break; + case HDLC_ENCODING_BIPHASE_MARK: val |= BIT12; break; + case HDLC_ENCODING_BIPHASE_SPACE: val |= BIT12 + BIT10; break; + case HDLC_ENCODING_BIPHASE_LEVEL: val |= BIT12 + BIT11; break; + case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: val |= BIT12 + BIT11 + BIT10; break; + } + + switch (info->params.crc_type & HDLC_CRC_MASK) + { + case HDLC_CRC_16_CCITT: val |= BIT9; break; + case HDLC_CRC_32_CCITT: val |= BIT9 + BIT8; break; + } + + if (info->params.flags & HDLC_FLAG_AUTO_DCD) + val |= BIT0; + + wr_reg16(info, RCR, val); + + /* CCR (clock control) + * + * 07..05 tx clock source + * 04..02 rx clock source + * 01 auxclk enable + * 00 BRG enable + */ + val = 0; + + if (info->params.flags & HDLC_FLAG_TXC_BRG) + { + // when RxC source is DPLL, BRG generates 16X DPLL + // reference clock, so take TxC from BRG/16 to get + // transmit clock at actual data rate + if (info->params.flags & HDLC_FLAG_RXC_DPLL) + val |= BIT6 + BIT5; /* 011, txclk = BRG/16 */ + else + val |= BIT6; /* 010, txclk = BRG */ + } + else if (info->params.flags & HDLC_FLAG_TXC_DPLL) + val |= BIT7; /* 100, txclk = DPLL Input */ + else if (info->params.flags & HDLC_FLAG_TXC_RXCPIN) + val |= BIT5; /* 001, txclk = RXC Input */ + + if (info->params.flags & HDLC_FLAG_RXC_BRG) + val |= BIT3; /* 010, rxclk = BRG */ + else if (info->params.flags & HDLC_FLAG_RXC_DPLL) + val |= BIT4; /* 100, rxclk = DPLL */ + else if (info->params.flags & HDLC_FLAG_RXC_TXCPIN) + val |= BIT2; /* 001, rxclk = TXC Input */ + + if (info->params.clock_speed) + val |= BIT1 + BIT0; + + wr_reg8(info, CCR, (unsigned char)val); + + if (info->params.flags & (HDLC_FLAG_TXC_DPLL + HDLC_FLAG_RXC_DPLL)) + { + // program DPLL mode + switch(info->params.encoding) + { + case HDLC_ENCODING_BIPHASE_MARK: + case HDLC_ENCODING_BIPHASE_SPACE: + val = BIT7; break; + case HDLC_ENCODING_BIPHASE_LEVEL: + case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: + val = BIT7 + BIT6; break; + default: val = BIT6; // NRZ encodings + } + wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | val)); + + // DPLL requires a 16X reference clock from BRG + set_rate(info, info->params.clock_speed * 16); + } + else + set_rate(info, info->params.clock_speed); + + tx_set_idle(info); + + msc_set_vcr(info); + + /* SCR (serial control) + * + * 15 1=tx req on FIFO half empty + * 14 1=rx req on FIFO half full + * 13 tx data IRQ enable + * 12 tx idle IRQ enable + * 11 underrun IRQ enable + * 10 rx data IRQ enable + * 09 rx idle IRQ enable + * 08 overrun IRQ enable + * 07 DSR IRQ enable + * 06 CTS IRQ enable + * 05 DCD IRQ enable + * 04 RI IRQ enable + * 03 reserved, must be zero + * 02 1=txd->rxd internal loopback enable + * 01 reserved, must be zero + * 00 1=master IRQ enable + */ + wr_reg16(info, SCR, BIT15 + BIT14 + BIT0); + + if (info->params.loopback) + enable_loopback(info); +} + +/* + * set transmit idle mode + */ +static void tx_set_idle(struct slgt_info *info) +{ + unsigned char val; + unsigned short tcr; + + /* if preamble enabled (tcr[6] == 1) then tx idle size = 8 bits + * else tcr[5:4] = tx idle size: 00 = 8 bits, 01 = 16 bits + */ + tcr = rd_reg16(info, TCR); + if (info->idle_mode & HDLC_TXIDLE_CUSTOM_16) { + /* disable preamble, set idle size to 16 bits */ + tcr = (tcr & ~(BIT6 + BIT5)) | BIT4; + /* MSB of 16 bit idle specified in tx preamble register (TPR) */ + wr_reg8(info, TPR, (unsigned char)((info->idle_mode >> 8) & 0xff)); + } else if (!(tcr & BIT6)) { + /* preamble is disabled, set idle size to 8 bits */ + tcr &= ~(BIT5 + BIT4); + } + wr_reg16(info, TCR, tcr); + + if (info->idle_mode & (HDLC_TXIDLE_CUSTOM_8 | HDLC_TXIDLE_CUSTOM_16)) { + /* LSB of custom tx idle specified in tx idle register */ + val = (unsigned char)(info->idle_mode & 0xff); + } else { + /* standard 8 bit idle patterns */ + switch(info->idle_mode) + { + case HDLC_TXIDLE_FLAGS: val = 0x7e; break; + case HDLC_TXIDLE_ALT_ZEROS_ONES: + case HDLC_TXIDLE_ALT_MARK_SPACE: val = 0xaa; break; + case HDLC_TXIDLE_ZEROS: + case HDLC_TXIDLE_SPACE: val = 0x00; break; + default: val = 0xff; + } + } + + wr_reg8(info, TIR, val); +} + +/* + * get state of V24 status (input) signals + */ +static void get_signals(struct slgt_info *info) +{ + unsigned short status = rd_reg16(info, SSR); + + /* clear all serial signals except DTR and RTS */ + info->signals &= SerialSignal_DTR + SerialSignal_RTS; + + if (status & BIT3) + info->signals |= SerialSignal_DSR; + if (status & BIT2) + info->signals |= SerialSignal_CTS; + if (status & BIT1) + info->signals |= SerialSignal_DCD; + if (status & BIT0) + info->signals |= SerialSignal_RI; +} + +/* + * set V.24 Control Register based on current configuration + */ +static void msc_set_vcr(struct slgt_info *info) +{ + unsigned char val = 0; + + /* VCR (V.24 control) + * + * 07..04 serial IF select + * 03 DTR + * 02 RTS + * 01 LL + * 00 RL + */ + + switch(info->if_mode & MGSL_INTERFACE_MASK) + { + case MGSL_INTERFACE_RS232: + val |= BIT5; /* 0010 */ + break; + case MGSL_INTERFACE_V35: + val |= BIT7 + BIT6 + BIT5; /* 1110 */ + break; + case MGSL_INTERFACE_RS422: + val |= BIT6; /* 0100 */ + break; + } + + if (info->if_mode & MGSL_INTERFACE_MSB_FIRST) + val |= BIT4; + if (info->signals & SerialSignal_DTR) + val |= BIT3; + if (info->signals & SerialSignal_RTS) + val |= BIT2; + if (info->if_mode & MGSL_INTERFACE_LL) + val |= BIT1; + if (info->if_mode & MGSL_INTERFACE_RL) + val |= BIT0; + wr_reg8(info, VCR, val); +} + +/* + * set state of V24 control (output) signals + */ +static void set_signals(struct slgt_info *info) +{ + unsigned char val = rd_reg8(info, VCR); + if (info->signals & SerialSignal_DTR) + val |= BIT3; + else + val &= ~BIT3; + if (info->signals & SerialSignal_RTS) + val |= BIT2; + else + val &= ~BIT2; + wr_reg8(info, VCR, val); +} + +/* + * free range of receive DMA buffers (i to last) + */ +static void free_rbufs(struct slgt_info *info, unsigned int i, unsigned int last) +{ + int done = 0; + + while(!done) { + /* reset current buffer for reuse */ + info->rbufs[i].status = 0; + set_desc_count(info->rbufs[i], info->rbuf_fill_level); + if (i == last) + done = 1; + if (++i == info->rbuf_count) + i = 0; + } + info->rbuf_current = i; +} + +/* + * mark all receive DMA buffers as free + */ +static void reset_rbufs(struct slgt_info *info) +{ + free_rbufs(info, 0, info->rbuf_count - 1); + info->rbuf_fill_index = 0; + info->rbuf_fill_count = 0; +} + +/* + * pass receive HDLC frame to upper layer + * + * return true if frame available, otherwise false + */ +static bool rx_get_frame(struct slgt_info *info) +{ + unsigned int start, end; + unsigned short status; + unsigned int framesize = 0; + unsigned long flags; + struct tty_struct *tty = info->port.tty; + unsigned char addr_field = 0xff; + unsigned int crc_size = 0; + + switch (info->params.crc_type & HDLC_CRC_MASK) { + case HDLC_CRC_16_CCITT: crc_size = 2; break; + case HDLC_CRC_32_CCITT: crc_size = 4; break; + } + +check_again: + + framesize = 0; + addr_field = 0xff; + start = end = info->rbuf_current; + + for (;;) { + if (!desc_complete(info->rbufs[end])) + goto cleanup; + + if (framesize == 0 && info->params.addr_filter != 0xff) + addr_field = info->rbufs[end].buf[0]; + + framesize += desc_count(info->rbufs[end]); + + if (desc_eof(info->rbufs[end])) + break; + + if (++end == info->rbuf_count) + end = 0; + + if (end == info->rbuf_current) { + if (info->rx_enabled){ + spin_lock_irqsave(&info->lock,flags); + rx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + } + goto cleanup; + } + } + + /* status + * + * 15 buffer complete + * 14..06 reserved + * 05..04 residue + * 02 eof (end of frame) + * 01 CRC error + * 00 abort + */ + status = desc_status(info->rbufs[end]); + + /* ignore CRC bit if not using CRC (bit is undefined) */ + if ((info->params.crc_type & HDLC_CRC_MASK) == HDLC_CRC_NONE) + status &= ~BIT1; + + if (framesize == 0 || + (addr_field != 0xff && addr_field != info->params.addr_filter)) { + free_rbufs(info, start, end); + goto check_again; + } + + if (framesize < (2 + crc_size) || status & BIT0) { + info->icount.rxshort++; + framesize = 0; + } else if (status & BIT1) { + info->icount.rxcrc++; + if (!(info->params.crc_type & HDLC_CRC_RETURN_EX)) + framesize = 0; + } + +#if SYNCLINK_GENERIC_HDLC + if (framesize == 0) { + info->netdev->stats.rx_errors++; + info->netdev->stats.rx_frame_errors++; + } +#endif + + DBGBH(("%s rx frame status=%04X size=%d\n", + info->device_name, status, framesize)); + DBGDATA(info, info->rbufs[start].buf, min_t(int, framesize, info->rbuf_fill_level), "rx"); + + if (framesize) { + if (!(info->params.crc_type & HDLC_CRC_RETURN_EX)) { + framesize -= crc_size; + crc_size = 0; + } + + if (framesize > info->max_frame_size + crc_size) + info->icount.rxlong++; + else { + /* copy dma buffer(s) to contiguous temp buffer */ + int copy_count = framesize; + int i = start; + unsigned char *p = info->tmp_rbuf; + info->tmp_rbuf_count = framesize; + + info->icount.rxok++; + + while(copy_count) { + int partial_count = min_t(int, copy_count, info->rbuf_fill_level); + memcpy(p, info->rbufs[i].buf, partial_count); + p += partial_count; + copy_count -= partial_count; + if (++i == info->rbuf_count) + i = 0; + } + + if (info->params.crc_type & HDLC_CRC_RETURN_EX) { + *p = (status & BIT1) ? RX_CRC_ERROR : RX_OK; + framesize++; + } + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_rx(info,info->tmp_rbuf, framesize); + else +#endif + ldisc_receive_buf(tty, info->tmp_rbuf, info->flag_buf, framesize); + } + } + free_rbufs(info, start, end); + return true; + +cleanup: + return false; +} + +/* + * pass receive buffer (RAW synchronous mode) to tty layer + * return true if buffer available, otherwise false + */ +static bool rx_get_buf(struct slgt_info *info) +{ + unsigned int i = info->rbuf_current; + unsigned int count; + + if (!desc_complete(info->rbufs[i])) + return false; + count = desc_count(info->rbufs[i]); + switch(info->params.mode) { + case MGSL_MODE_MONOSYNC: + case MGSL_MODE_BISYNC: + case MGSL_MODE_XSYNC: + /* ignore residue in byte synchronous modes */ + if (desc_residue(info->rbufs[i])) + count--; + break; + } + DBGDATA(info, info->rbufs[i].buf, count, "rx"); + DBGINFO(("rx_get_buf size=%d\n", count)); + if (count) + ldisc_receive_buf(info->port.tty, info->rbufs[i].buf, + info->flag_buf, count); + free_rbufs(info, i, i); + return true; +} + +static void reset_tbufs(struct slgt_info *info) +{ + unsigned int i; + info->tbuf_current = 0; + for (i=0 ; i < info->tbuf_count ; i++) { + info->tbufs[i].status = 0; + info->tbufs[i].count = 0; + } +} + +/* + * return number of free transmit DMA buffers + */ +static unsigned int free_tbuf_count(struct slgt_info *info) +{ + unsigned int count = 0; + unsigned int i = info->tbuf_current; + + do + { + if (desc_count(info->tbufs[i])) + break; /* buffer in use */ + ++count; + if (++i == info->tbuf_count) + i=0; + } while (i != info->tbuf_current); + + /* if tx DMA active, last zero count buffer is in use */ + if (count && (rd_reg32(info, TDCSR) & BIT0)) + --count; + + return count; +} + +/* + * return number of bytes in unsent transmit DMA buffers + * and the serial controller tx FIFO + */ +static unsigned int tbuf_bytes(struct slgt_info *info) +{ + unsigned int total_count = 0; + unsigned int i = info->tbuf_current; + unsigned int reg_value; + unsigned int count; + unsigned int active_buf_count = 0; + + /* + * Add descriptor counts for all tx DMA buffers. + * If count is zero (cleared by DMA controller after read), + * the buffer is complete or is actively being read from. + * + * Record buf_count of last buffer with zero count starting + * from current ring position. buf_count is mirror + * copy of count and is not cleared by serial controller. + * If DMA controller is active, that buffer is actively + * being read so add to total. + */ + do { + count = desc_count(info->tbufs[i]); + if (count) + total_count += count; + else if (!total_count) + active_buf_count = info->tbufs[i].buf_count; + if (++i == info->tbuf_count) + i = 0; + } while (i != info->tbuf_current); + + /* read tx DMA status register */ + reg_value = rd_reg32(info, TDCSR); + + /* if tx DMA active, last zero count buffer is in use */ + if (reg_value & BIT0) + total_count += active_buf_count; + + /* add tx FIFO count = reg_value[15..8] */ + total_count += (reg_value >> 8) & 0xff; + + /* if transmitter active add one byte for shift register */ + if (info->tx_active) + total_count++; + + return total_count; +} + +/* + * load data into transmit DMA buffer ring and start transmitter if needed + * return true if data accepted, otherwise false (buffers full) + */ +static bool tx_load(struct slgt_info *info, const char *buf, unsigned int size) +{ + unsigned short count; + unsigned int i; + struct slgt_desc *d; + + /* check required buffer space */ + if (DIV_ROUND_UP(size, DMABUFSIZE) > free_tbuf_count(info)) + return false; + + DBGDATA(info, buf, size, "tx"); + + /* + * copy data to one or more DMA buffers in circular ring + * tbuf_start = first buffer for this data + * tbuf_current = next free buffer + * + * Copy all data before making data visible to DMA controller by + * setting descriptor count of the first buffer. + * This prevents an active DMA controller from reading the first DMA + * buffers of a frame and stopping before the final buffers are filled. + */ + + info->tbuf_start = i = info->tbuf_current; + + while (size) { + d = &info->tbufs[i]; + + count = (unsigned short)((size > DMABUFSIZE) ? DMABUFSIZE : size); + memcpy(d->buf, buf, count); + + size -= count; + buf += count; + + /* + * set EOF bit for last buffer of HDLC frame or + * for every buffer in raw mode + */ + if ((!size && info->params.mode == MGSL_MODE_HDLC) || + info->params.mode == MGSL_MODE_RAW) + set_desc_eof(*d, 1); + else + set_desc_eof(*d, 0); + + /* set descriptor count for all but first buffer */ + if (i != info->tbuf_start) + set_desc_count(*d, count); + d->buf_count = count; + + if (++i == info->tbuf_count) + i = 0; + } + + info->tbuf_current = i; + + /* set first buffer count to make new data visible to DMA controller */ + d = &info->tbufs[info->tbuf_start]; + set_desc_count(*d, d->buf_count); + + /* start transmitter if needed and update transmit timeout */ + if (!info->tx_active) + tx_start(info); + update_tx_timer(info); + + return true; +} + +static int register_test(struct slgt_info *info) +{ + static unsigned short patterns[] = + {0x0000, 0xffff, 0xaaaa, 0x5555, 0x6969, 0x9696}; + static unsigned int count = ARRAY_SIZE(patterns); + unsigned int i; + int rc = 0; + + for (i=0 ; i < count ; i++) { + wr_reg16(info, TIR, patterns[i]); + wr_reg16(info, BDR, patterns[(i+1)%count]); + if ((rd_reg16(info, TIR) != patterns[i]) || + (rd_reg16(info, BDR) != patterns[(i+1)%count])) { + rc = -ENODEV; + break; + } + } + info->gpio_present = (rd_reg32(info, JCR) & BIT5) ? 1 : 0; + info->init_error = rc ? 0 : DiagStatus_AddressFailure; + return rc; +} + +static int irq_test(struct slgt_info *info) +{ + unsigned long timeout; + unsigned long flags; + struct tty_struct *oldtty = info->port.tty; + u32 speed = info->params.data_rate; + + info->params.data_rate = 921600; + info->port.tty = NULL; + + spin_lock_irqsave(&info->lock, flags); + async_mode(info); + slgt_irq_on(info, IRQ_TXIDLE); + + /* enable transmitter */ + wr_reg16(info, TCR, + (unsigned short)(rd_reg16(info, TCR) | BIT1)); + + /* write one byte and wait for tx idle */ + wr_reg16(info, TDR, 0); + + /* assume failure */ + info->init_error = DiagStatus_IrqFailure; + info->irq_occurred = false; + + spin_unlock_irqrestore(&info->lock, flags); + + timeout=100; + while(timeout-- && !info->irq_occurred) + msleep_interruptible(10); + + spin_lock_irqsave(&info->lock,flags); + reset_port(info); + spin_unlock_irqrestore(&info->lock,flags); + + info->params.data_rate = speed; + info->port.tty = oldtty; + + info->init_error = info->irq_occurred ? 0 : DiagStatus_IrqFailure; + return info->irq_occurred ? 0 : -ENODEV; +} + +static int loopback_test_rx(struct slgt_info *info) +{ + unsigned char *src, *dest; + int count; + + if (desc_complete(info->rbufs[0])) { + count = desc_count(info->rbufs[0]); + src = info->rbufs[0].buf; + dest = info->tmp_rbuf; + + for( ; count ; count-=2, src+=2) { + /* src=data byte (src+1)=status byte */ + if (!(*(src+1) & (BIT9 + BIT8))) { + *dest = *src; + dest++; + info->tmp_rbuf_count++; + } + } + DBGDATA(info, info->tmp_rbuf, info->tmp_rbuf_count, "rx"); + return 1; + } + return 0; +} + +static int loopback_test(struct slgt_info *info) +{ +#define TESTFRAMESIZE 20 + + unsigned long timeout; + u16 count = TESTFRAMESIZE; + unsigned char buf[TESTFRAMESIZE]; + int rc = -ENODEV; + unsigned long flags; + + struct tty_struct *oldtty = info->port.tty; + MGSL_PARAMS params; + + memcpy(¶ms, &info->params, sizeof(params)); + + info->params.mode = MGSL_MODE_ASYNC; + info->params.data_rate = 921600; + info->params.loopback = 1; + info->port.tty = NULL; + + /* build and send transmit frame */ + for (count = 0; count < TESTFRAMESIZE; ++count) + buf[count] = (unsigned char)count; + + info->tmp_rbuf_count = 0; + memset(info->tmp_rbuf, 0, TESTFRAMESIZE); + + /* program hardware for HDLC and enabled receiver */ + spin_lock_irqsave(&info->lock,flags); + async_mode(info); + rx_start(info); + tx_load(info, buf, count); + spin_unlock_irqrestore(&info->lock, flags); + + /* wait for receive complete */ + for (timeout = 100; timeout; --timeout) { + msleep_interruptible(10); + if (loopback_test_rx(info)) { + rc = 0; + break; + } + } + + /* verify received frame length and contents */ + if (!rc && (info->tmp_rbuf_count != count || + memcmp(buf, info->tmp_rbuf, count))) { + rc = -ENODEV; + } + + spin_lock_irqsave(&info->lock,flags); + reset_adapter(info); + spin_unlock_irqrestore(&info->lock,flags); + + memcpy(&info->params, ¶ms, sizeof(info->params)); + info->port.tty = oldtty; + + info->init_error = rc ? DiagStatus_DmaFailure : 0; + return rc; +} + +static int adapter_test(struct slgt_info *info) +{ + DBGINFO(("testing %s\n", info->device_name)); + if (register_test(info) < 0) { + printk("register test failure %s addr=%08X\n", + info->device_name, info->phys_reg_addr); + } else if (irq_test(info) < 0) { + printk("IRQ test failure %s IRQ=%d\n", + info->device_name, info->irq_level); + } else if (loopback_test(info) < 0) { + printk("loopback test failure %s\n", info->device_name); + } + return info->init_error; +} + +/* + * transmit timeout handler + */ +static void tx_timeout(unsigned long context) +{ + struct slgt_info *info = (struct slgt_info*)context; + unsigned long flags; + + DBGINFO(("%s tx_timeout\n", info->device_name)); + if(info->tx_active && info->params.mode == MGSL_MODE_HDLC) { + info->icount.txtimeout++; + } + spin_lock_irqsave(&info->lock,flags); + tx_stop(info); + spin_unlock_irqrestore(&info->lock,flags); + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_tx_done(info); + else +#endif + bh_transmit(info); +} + +/* + * receive buffer polling timer + */ +static void rx_timeout(unsigned long context) +{ + struct slgt_info *info = (struct slgt_info*)context; + unsigned long flags; + + DBGINFO(("%s rx_timeout\n", info->device_name)); + spin_lock_irqsave(&info->lock, flags); + info->pending_bh |= BH_RECEIVE; + spin_unlock_irqrestore(&info->lock, flags); + bh_handler(&info->task); +} + diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c new file mode 100644 index 000000000000..327343694473 --- /dev/null +++ b/drivers/tty/synclinkmp.c @@ -0,0 +1,5600 @@ +/* + * $Id: synclinkmp.c,v 4.38 2005/07/15 13:29:44 paulkf Exp $ + * + * Device driver for Microgate SyncLink Multiport + * high speed multiprotocol serial adapter. + * + * written by Paul Fulghum for Microgate Corporation + * paulkf@microgate.com + * + * Microgate and SyncLink are trademarks of Microgate Corporation + * + * Derived from serial.c written by Theodore Ts'o and Linus Torvalds + * This code is released under the GNU General Public License (GPL) + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#define VERSION(ver,rel,seq) (((ver)<<16) | ((rel)<<8) | (seq)) +#if defined(__i386__) +# define BREAKPOINT() asm(" int $3"); +#else +# define BREAKPOINT() { } +#endif + +#define MAX_DEVICES 12 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINKMP_MODULE)) +#define SYNCLINK_GENERIC_HDLC 1 +#else +#define SYNCLINK_GENERIC_HDLC 0 +#endif + +#define GET_USER(error,value,addr) error = get_user(value,addr) +#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0 +#define PUT_USER(error,value,addr) error = put_user(value,addr) +#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0 + +#include + +static MGSL_PARAMS default_params = { + MGSL_MODE_HDLC, /* unsigned long mode */ + 0, /* unsigned char loopback; */ + HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */ + HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */ + 0, /* unsigned long clock_speed; */ + 0xff, /* unsigned char addr_filter; */ + HDLC_CRC_16_CCITT, /* unsigned short crc_type; */ + HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */ + HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */ + 9600, /* unsigned long data_rate; */ + 8, /* unsigned char data_bits; */ + 1, /* unsigned char stop_bits; */ + ASYNC_PARITY_NONE /* unsigned char parity; */ +}; + +/* size in bytes of DMA data buffers */ +#define SCABUFSIZE 1024 +#define SCA_MEM_SIZE 0x40000 +#define SCA_BASE_SIZE 512 +#define SCA_REG_SIZE 16 +#define SCA_MAX_PORTS 4 +#define SCAMAXDESC 128 + +#define BUFFERLISTSIZE 4096 + +/* SCA-I style DMA buffer descriptor */ +typedef struct _SCADESC +{ + u16 next; /* lower l6 bits of next descriptor addr */ + u16 buf_ptr; /* lower 16 bits of buffer addr */ + u8 buf_base; /* upper 8 bits of buffer addr */ + u8 pad1; + u16 length; /* length of buffer */ + u8 status; /* status of buffer */ + u8 pad2; +} SCADESC, *PSCADESC; + +typedef struct _SCADESC_EX +{ + /* device driver bookkeeping section */ + char *virt_addr; /* virtual address of data buffer */ + u16 phys_entry; /* lower 16-bits of physical address of this descriptor */ +} SCADESC_EX, *PSCADESC_EX; + +/* The queue of BH actions to be performed */ + +#define BH_RECEIVE 1 +#define BH_TRANSMIT 2 +#define BH_STATUS 4 + +#define IO_PIN_SHUTDOWN_LIMIT 100 + +struct _input_signal_events { + int ri_up; + int ri_down; + int dsr_up; + int dsr_down; + int dcd_up; + int dcd_down; + int cts_up; + int cts_down; +}; + +/* + * Device instance data structure + */ +typedef struct _synclinkmp_info { + void *if_ptr; /* General purpose pointer (used by SPPP) */ + int magic; + struct tty_port port; + int line; + unsigned short close_delay; + unsigned short closing_wait; /* time to wait before closing */ + + struct mgsl_icount icount; + + int timeout; + int x_char; /* xon/xoff character */ + u16 read_status_mask1; /* break detection (SR1 indications) */ + u16 read_status_mask2; /* parity/framing/overun (SR2 indications) */ + unsigned char ignore_status_mask1; /* break detection (SR1 indications) */ + unsigned char ignore_status_mask2; /* parity/framing/overun (SR2 indications) */ + unsigned char *tx_buf; + int tx_put; + int tx_get; + int tx_count; + + wait_queue_head_t status_event_wait_q; + wait_queue_head_t event_wait_q; + struct timer_list tx_timer; /* HDLC transmit timeout timer */ + struct _synclinkmp_info *next_device; /* device list link */ + struct timer_list status_timer; /* input signal status check timer */ + + spinlock_t lock; /* spinlock for synchronizing with ISR */ + struct work_struct task; /* task structure for scheduling bh */ + + u32 max_frame_size; /* as set by device config */ + + u32 pending_bh; + + bool bh_running; /* Protection from multiple */ + int isr_overflow; + bool bh_requested; + + int dcd_chkcount; /* check counts to prevent */ + int cts_chkcount; /* too many IRQs if a signal */ + int dsr_chkcount; /* is floating */ + int ri_chkcount; + + char *buffer_list; /* virtual address of Rx & Tx buffer lists */ + unsigned long buffer_list_phys; + + unsigned int rx_buf_count; /* count of total allocated Rx buffers */ + SCADESC *rx_buf_list; /* list of receive buffer entries */ + SCADESC_EX rx_buf_list_ex[SCAMAXDESC]; /* list of receive buffer entries */ + unsigned int current_rx_buf; + + unsigned int tx_buf_count; /* count of total allocated Tx buffers */ + SCADESC *tx_buf_list; /* list of transmit buffer entries */ + SCADESC_EX tx_buf_list_ex[SCAMAXDESC]; /* list of transmit buffer entries */ + unsigned int last_tx_buf; + + unsigned char *tmp_rx_buf; + unsigned int tmp_rx_buf_count; + + bool rx_enabled; + bool rx_overflow; + + bool tx_enabled; + bool tx_active; + u32 idle_mode; + + unsigned char ie0_value; + unsigned char ie1_value; + unsigned char ie2_value; + unsigned char ctrlreg_value; + unsigned char old_signals; + + char device_name[25]; /* device instance name */ + + int port_count; + int adapter_num; + int port_num; + + struct _synclinkmp_info *port_array[SCA_MAX_PORTS]; + + unsigned int bus_type; /* expansion bus type (ISA,EISA,PCI) */ + + unsigned int irq_level; /* interrupt level */ + unsigned long irq_flags; + bool irq_requested; /* true if IRQ requested */ + + MGSL_PARAMS params; /* communications parameters */ + + unsigned char serial_signals; /* current serial signal states */ + + bool irq_occurred; /* for diagnostics use */ + unsigned int init_error; /* Initialization startup error */ + + u32 last_mem_alloc; + unsigned char* memory_base; /* shared memory address (PCI only) */ + u32 phys_memory_base; + int shared_mem_requested; + + unsigned char* sca_base; /* HD64570 SCA Memory address */ + u32 phys_sca_base; + u32 sca_offset; + bool sca_base_requested; + + unsigned char* lcr_base; /* local config registers (PCI only) */ + u32 phys_lcr_base; + u32 lcr_offset; + int lcr_mem_requested; + + unsigned char* statctrl_base; /* status/control register memory */ + u32 phys_statctrl_base; + u32 statctrl_offset; + bool sca_statctrl_requested; + + u32 misc_ctrl_value; + char flag_buf[MAX_ASYNC_BUFFER_SIZE]; + char char_buf[MAX_ASYNC_BUFFER_SIZE]; + bool drop_rts_on_tx_done; + + struct _input_signal_events input_signal_events; + + /* SPPP/Cisco HDLC device parts */ + int netcount; + spinlock_t netlock; + +#if SYNCLINK_GENERIC_HDLC + struct net_device *netdev; +#endif + +} SLMP_INFO; + +#define MGSL_MAGIC 0x5401 + +/* + * define serial signal status change macros + */ +#define MISCSTATUS_DCD_LATCHED (SerialSignal_DCD<<8) /* indicates change in DCD */ +#define MISCSTATUS_RI_LATCHED (SerialSignal_RI<<8) /* indicates change in RI */ +#define MISCSTATUS_CTS_LATCHED (SerialSignal_CTS<<8) /* indicates change in CTS */ +#define MISCSTATUS_DSR_LATCHED (SerialSignal_DSR<<8) /* change in DSR */ + +/* Common Register macros */ +#define LPR 0x00 +#define PABR0 0x02 +#define PABR1 0x03 +#define WCRL 0x04 +#define WCRM 0x05 +#define WCRH 0x06 +#define DPCR 0x08 +#define DMER 0x09 +#define ISR0 0x10 +#define ISR1 0x11 +#define ISR2 0x12 +#define IER0 0x14 +#define IER1 0x15 +#define IER2 0x16 +#define ITCR 0x18 +#define INTVR 0x1a +#define IMVR 0x1c + +/* MSCI Register macros */ +#define TRB 0x20 +#define TRBL 0x20 +#define TRBH 0x21 +#define SR0 0x22 +#define SR1 0x23 +#define SR2 0x24 +#define SR3 0x25 +#define FST 0x26 +#define IE0 0x28 +#define IE1 0x29 +#define IE2 0x2a +#define FIE 0x2b +#define CMD 0x2c +#define MD0 0x2e +#define MD1 0x2f +#define MD2 0x30 +#define CTL 0x31 +#define SA0 0x32 +#define SA1 0x33 +#define IDL 0x34 +#define TMC 0x35 +#define RXS 0x36 +#define TXS 0x37 +#define TRC0 0x38 +#define TRC1 0x39 +#define RRC 0x3a +#define CST0 0x3c +#define CST1 0x3d + +/* Timer Register Macros */ +#define TCNT 0x60 +#define TCNTL 0x60 +#define TCNTH 0x61 +#define TCONR 0x62 +#define TCONRL 0x62 +#define TCONRH 0x63 +#define TMCS 0x64 +#define TEPR 0x65 + +/* DMA Controller Register macros */ +#define DARL 0x80 +#define DARH 0x81 +#define DARB 0x82 +#define BAR 0x80 +#define BARL 0x80 +#define BARH 0x81 +#define BARB 0x82 +#define SAR 0x84 +#define SARL 0x84 +#define SARH 0x85 +#define SARB 0x86 +#define CPB 0x86 +#define CDA 0x88 +#define CDAL 0x88 +#define CDAH 0x89 +#define EDA 0x8a +#define EDAL 0x8a +#define EDAH 0x8b +#define BFL 0x8c +#define BFLL 0x8c +#define BFLH 0x8d +#define BCR 0x8e +#define BCRL 0x8e +#define BCRH 0x8f +#define DSR 0x90 +#define DMR 0x91 +#define FCT 0x93 +#define DIR 0x94 +#define DCMD 0x95 + +/* combine with timer or DMA register address */ +#define TIMER0 0x00 +#define TIMER1 0x08 +#define TIMER2 0x10 +#define TIMER3 0x18 +#define RXDMA 0x00 +#define TXDMA 0x20 + +/* SCA Command Codes */ +#define NOOP 0x00 +#define TXRESET 0x01 +#define TXENABLE 0x02 +#define TXDISABLE 0x03 +#define TXCRCINIT 0x04 +#define TXCRCEXCL 0x05 +#define TXEOM 0x06 +#define TXABORT 0x07 +#define MPON 0x08 +#define TXBUFCLR 0x09 +#define RXRESET 0x11 +#define RXENABLE 0x12 +#define RXDISABLE 0x13 +#define RXCRCINIT 0x14 +#define RXREJECT 0x15 +#define SEARCHMP 0x16 +#define RXCRCEXCL 0x17 +#define RXCRCCALC 0x18 +#define CHRESET 0x21 +#define HUNT 0x31 + +/* DMA command codes */ +#define SWABORT 0x01 +#define FEICLEAR 0x02 + +/* IE0 */ +#define TXINTE BIT7 +#define RXINTE BIT6 +#define TXRDYE BIT1 +#define RXRDYE BIT0 + +/* IE1 & SR1 */ +#define UDRN BIT7 +#define IDLE BIT6 +#define SYNCD BIT4 +#define FLGD BIT4 +#define CCTS BIT3 +#define CDCD BIT2 +#define BRKD BIT1 +#define ABTD BIT1 +#define GAPD BIT1 +#define BRKE BIT0 +#define IDLD BIT0 + +/* IE2 & SR2 */ +#define EOM BIT7 +#define PMP BIT6 +#define SHRT BIT6 +#define PE BIT5 +#define ABT BIT5 +#define FRME BIT4 +#define RBIT BIT4 +#define OVRN BIT3 +#define CRCE BIT2 + + +/* + * Global linked list of SyncLink devices + */ +static SLMP_INFO *synclinkmp_device_list = NULL; +static int synclinkmp_adapter_count = -1; +static int synclinkmp_device_count = 0; + +/* + * Set this param to non-zero to load eax with the + * .text section address and breakpoint on module load. + * This is useful for use with gdb and add-symbol-file command. + */ +static int break_on_load = 0; + +/* + * Driver major number, defaults to zero to get auto + * assigned major number. May be forced as module parameter. + */ +static int ttymajor = 0; + +/* + * Array of user specified options for ISA adapters. + */ +static int debug_level = 0; +static int maxframe[MAX_DEVICES] = {0,}; + +module_param(break_on_load, bool, 0); +module_param(ttymajor, int, 0); +module_param(debug_level, int, 0); +module_param_array(maxframe, int, NULL, 0); + +static char *driver_name = "SyncLink MultiPort driver"; +static char *driver_version = "$Revision: 4.38 $"; + +static int synclinkmp_init_one(struct pci_dev *dev,const struct pci_device_id *ent); +static void synclinkmp_remove_one(struct pci_dev *dev); + +static struct pci_device_id synclinkmp_pci_tbl[] = { + { PCI_VENDOR_ID_MICROGATE, PCI_DEVICE_ID_MICROGATE_SCA, PCI_ANY_ID, PCI_ANY_ID, }, + { 0, }, /* terminate list */ +}; +MODULE_DEVICE_TABLE(pci, synclinkmp_pci_tbl); + +MODULE_LICENSE("GPL"); + +static struct pci_driver synclinkmp_pci_driver = { + .name = "synclinkmp", + .id_table = synclinkmp_pci_tbl, + .probe = synclinkmp_init_one, + .remove = __devexit_p(synclinkmp_remove_one), +}; + + +static struct tty_driver *serial_driver; + +/* number of characters left in xmit buffer before we ask for more */ +#define WAKEUP_CHARS 256 + + +/* tty callbacks */ + +static int open(struct tty_struct *tty, struct file * filp); +static void close(struct tty_struct *tty, struct file * filp); +static void hangup(struct tty_struct *tty); +static void set_termios(struct tty_struct *tty, struct ktermios *old_termios); + +static int write(struct tty_struct *tty, const unsigned char *buf, int count); +static int put_char(struct tty_struct *tty, unsigned char ch); +static void send_xchar(struct tty_struct *tty, char ch); +static void wait_until_sent(struct tty_struct *tty, int timeout); +static int write_room(struct tty_struct *tty); +static void flush_chars(struct tty_struct *tty); +static void flush_buffer(struct tty_struct *tty); +static void tx_hold(struct tty_struct *tty); +static void tx_release(struct tty_struct *tty); + +static int ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); +static int chars_in_buffer(struct tty_struct *tty); +static void throttle(struct tty_struct * tty); +static void unthrottle(struct tty_struct * tty); +static int set_break(struct tty_struct *tty, int break_state); + +#if SYNCLINK_GENERIC_HDLC +#define dev_to_port(D) (dev_to_hdlc(D)->priv) +static void hdlcdev_tx_done(SLMP_INFO *info); +static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size); +static int hdlcdev_init(SLMP_INFO *info); +static void hdlcdev_exit(SLMP_INFO *info); +#endif + +/* ioctl handlers */ + +static int get_stats(SLMP_INFO *info, struct mgsl_icount __user *user_icount); +static int get_params(SLMP_INFO *info, MGSL_PARAMS __user *params); +static int set_params(SLMP_INFO *info, MGSL_PARAMS __user *params); +static int get_txidle(SLMP_INFO *info, int __user *idle_mode); +static int set_txidle(SLMP_INFO *info, int idle_mode); +static int tx_enable(SLMP_INFO *info, int enable); +static int tx_abort(SLMP_INFO *info); +static int rx_enable(SLMP_INFO *info, int enable); +static int modem_input_wait(SLMP_INFO *info,int arg); +static int wait_mgsl_event(SLMP_INFO *info, int __user *mask_ptr); +static int tiocmget(struct tty_struct *tty); +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); +static int set_break(struct tty_struct *tty, int break_state); + +static void add_device(SLMP_INFO *info); +static void device_init(int adapter_num, struct pci_dev *pdev); +static int claim_resources(SLMP_INFO *info); +static void release_resources(SLMP_INFO *info); + +static int startup(SLMP_INFO *info); +static int block_til_ready(struct tty_struct *tty, struct file * filp,SLMP_INFO *info); +static int carrier_raised(struct tty_port *port); +static void shutdown(SLMP_INFO *info); +static void program_hw(SLMP_INFO *info); +static void change_params(SLMP_INFO *info); + +static bool init_adapter(SLMP_INFO *info); +static bool register_test(SLMP_INFO *info); +static bool irq_test(SLMP_INFO *info); +static bool loopback_test(SLMP_INFO *info); +static int adapter_test(SLMP_INFO *info); +static bool memory_test(SLMP_INFO *info); + +static void reset_adapter(SLMP_INFO *info); +static void reset_port(SLMP_INFO *info); +static void async_mode(SLMP_INFO *info); +static void hdlc_mode(SLMP_INFO *info); + +static void rx_stop(SLMP_INFO *info); +static void rx_start(SLMP_INFO *info); +static void rx_reset_buffers(SLMP_INFO *info); +static void rx_free_frame_buffers(SLMP_INFO *info, unsigned int first, unsigned int last); +static bool rx_get_frame(SLMP_INFO *info); + +static void tx_start(SLMP_INFO *info); +static void tx_stop(SLMP_INFO *info); +static void tx_load_fifo(SLMP_INFO *info); +static void tx_set_idle(SLMP_INFO *info); +static void tx_load_dma_buffer(SLMP_INFO *info, const char *buf, unsigned int count); + +static void get_signals(SLMP_INFO *info); +static void set_signals(SLMP_INFO *info); +static void enable_loopback(SLMP_INFO *info, int enable); +static void set_rate(SLMP_INFO *info, u32 data_rate); + +static int bh_action(SLMP_INFO *info); +static void bh_handler(struct work_struct *work); +static void bh_receive(SLMP_INFO *info); +static void bh_transmit(SLMP_INFO *info); +static void bh_status(SLMP_INFO *info); +static void isr_timer(SLMP_INFO *info); +static void isr_rxint(SLMP_INFO *info); +static void isr_rxrdy(SLMP_INFO *info); +static void isr_txint(SLMP_INFO *info); +static void isr_txrdy(SLMP_INFO *info); +static void isr_rxdmaok(SLMP_INFO *info); +static void isr_rxdmaerror(SLMP_INFO *info); +static void isr_txdmaok(SLMP_INFO *info); +static void isr_txdmaerror(SLMP_INFO *info); +static void isr_io_pin(SLMP_INFO *info, u16 status); + +static int alloc_dma_bufs(SLMP_INFO *info); +static void free_dma_bufs(SLMP_INFO *info); +static int alloc_buf_list(SLMP_INFO *info); +static int alloc_frame_bufs(SLMP_INFO *info, SCADESC *list, SCADESC_EX *list_ex,int count); +static int alloc_tmp_rx_buf(SLMP_INFO *info); +static void free_tmp_rx_buf(SLMP_INFO *info); + +static void load_pci_memory(SLMP_INFO *info, char* dest, const char* src, unsigned short count); +static void trace_block(SLMP_INFO *info, const char* data, int count, int xmit); +static void tx_timeout(unsigned long context); +static void status_timeout(unsigned long context); + +static unsigned char read_reg(SLMP_INFO *info, unsigned char addr); +static void write_reg(SLMP_INFO *info, unsigned char addr, unsigned char val); +static u16 read_reg16(SLMP_INFO *info, unsigned char addr); +static void write_reg16(SLMP_INFO *info, unsigned char addr, u16 val); +static unsigned char read_status_reg(SLMP_INFO * info); +static void write_control_reg(SLMP_INFO * info); + + +static unsigned char rx_active_fifo_level = 16; // rx request FIFO activation level in bytes +static unsigned char tx_active_fifo_level = 16; // tx request FIFO activation level in bytes +static unsigned char tx_negate_fifo_level = 32; // tx request FIFO negation level in bytes + +static u32 misc_ctrl_value = 0x007e4040; +static u32 lcr1_brdr_value = 0x00800028; + +static u32 read_ahead_count = 8; + +/* DPCR, DMA Priority Control + * + * 07..05 Not used, must be 0 + * 04 BRC, bus release condition: 0=all transfers complete + * 1=release after 1 xfer on all channels + * 03 CCC, channel change condition: 0=every cycle + * 1=after each channel completes all xfers + * 02..00 PR<2..0>, priority 100=round robin + * + * 00000100 = 0x00 + */ +static unsigned char dma_priority = 0x04; + +// Number of bytes that can be written to shared RAM +// in a single write operation +static u32 sca_pci_load_interval = 64; + +/* + * 1st function defined in .text section. Calling this function in + * init_module() followed by a breakpoint allows a remote debugger + * (gdb) to get the .text address for the add-symbol-file command. + * This allows remote debugging of dynamically loadable modules. + */ +static void* synclinkmp_get_text_ptr(void); +static void* synclinkmp_get_text_ptr(void) {return synclinkmp_get_text_ptr;} + +static inline int sanity_check(SLMP_INFO *info, + char *name, const char *routine) +{ +#ifdef SANITY_CHECK + static const char *badmagic = + "Warning: bad magic number for synclinkmp_struct (%s) in %s\n"; + static const char *badinfo = + "Warning: null synclinkmp_struct for (%s) in %s\n"; + + if (!info) { + printk(badinfo, name, routine); + return 1; + } + if (info->magic != MGSL_MAGIC) { + printk(badmagic, name, routine); + return 1; + } +#else + if (!info) + return 1; +#endif + return 0; +} + +/** + * line discipline callback wrappers + * + * The wrappers maintain line discipline references + * while calling into the line discipline. + * + * ldisc_receive_buf - pass receive data to line discipline + */ + +static void ldisc_receive_buf(struct tty_struct *tty, + const __u8 *data, char *flags, int count) +{ + struct tty_ldisc *ld; + if (!tty) + return; + ld = tty_ldisc_ref(tty); + if (ld) { + if (ld->ops->receive_buf) + ld->ops->receive_buf(tty, data, flags, count); + tty_ldisc_deref(ld); + } +} + +/* tty callbacks */ + +/* Called when a port is opened. Init and enable port. + */ +static int open(struct tty_struct *tty, struct file *filp) +{ + SLMP_INFO *info; + int retval, line; + unsigned long flags; + + line = tty->index; + if ((line < 0) || (line >= synclinkmp_device_count)) { + printk("%s(%d): open with invalid line #%d.\n", + __FILE__,__LINE__,line); + return -ENODEV; + } + + info = synclinkmp_device_list; + while(info && info->line != line) + info = info->next_device; + if (sanity_check(info, tty->name, "open")) + return -ENODEV; + if ( info->init_error ) { + printk("%s(%d):%s device is not allocated, init error=%d\n", + __FILE__,__LINE__,info->device_name,info->init_error); + return -ENODEV; + } + + tty->driver_data = info; + info->port.tty = tty; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s open(), old ref count = %d\n", + __FILE__,__LINE__,tty->driver->name, info->port.count); + + /* If port is closing, signal caller to try again */ + if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){ + if (info->port.flags & ASYNC_CLOSING) + interruptible_sleep_on(&info->port.close_wait); + retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS); + goto cleanup; + } + + info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0; + + spin_lock_irqsave(&info->netlock, flags); + if (info->netcount) { + retval = -EBUSY; + spin_unlock_irqrestore(&info->netlock, flags); + goto cleanup; + } + info->port.count++; + spin_unlock_irqrestore(&info->netlock, flags); + + if (info->port.count == 1) { + /* 1st open on this device, init hardware */ + retval = startup(info); + if (retval < 0) + goto cleanup; + } + + retval = block_til_ready(tty, filp, info); + if (retval) { + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s block_til_ready() returned %d\n", + __FILE__,__LINE__, info->device_name, retval); + goto cleanup; + } + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s open() success\n", + __FILE__,__LINE__, info->device_name); + retval = 0; + +cleanup: + if (retval) { + if (tty->count == 1) + info->port.tty = NULL; /* tty layer will release tty struct */ + if(info->port.count) + info->port.count--; + } + + return retval; +} + +/* Called when port is closed. Wait for remaining data to be + * sent. Disable port and free resources. + */ +static void close(struct tty_struct *tty, struct file *filp) +{ + SLMP_INFO * info = tty->driver_data; + + if (sanity_check(info, tty->name, "close")) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s close() entry, count=%d\n", + __FILE__,__LINE__, info->device_name, info->port.count); + + if (tty_port_close_start(&info->port, tty, filp) == 0) + goto cleanup; + + mutex_lock(&info->port.mutex); + if (info->port.flags & ASYNC_INITIALIZED) + wait_until_sent(tty, info->timeout); + + flush_buffer(tty); + tty_ldisc_flush(tty); + shutdown(info); + mutex_unlock(&info->port.mutex); + + tty_port_close_end(&info->port, tty); + info->port.tty = NULL; +cleanup: + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__, + tty->driver->name, info->port.count); +} + +/* Called by tty_hangup() when a hangup is signaled. + * This is the same as closing all open descriptors for the port. + */ +static void hangup(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s hangup()\n", + __FILE__,__LINE__, info->device_name ); + + if (sanity_check(info, tty->name, "hangup")) + return; + + mutex_lock(&info->port.mutex); + flush_buffer(tty); + shutdown(info); + + spin_lock_irqsave(&info->port.lock, flags); + info->port.count = 0; + info->port.flags &= ~ASYNC_NORMAL_ACTIVE; + info->port.tty = NULL; + spin_unlock_irqrestore(&info->port.lock, flags); + mutex_unlock(&info->port.mutex); + + wake_up_interruptible(&info->port.open_wait); +} + +/* Set new termios settings + */ +static void set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s set_termios()\n", __FILE__,__LINE__, + tty->driver->name ); + + change_params(info); + + /* Handle transition to B0 status */ + if (old_termios->c_cflag & CBAUD && + !(tty->termios->c_cflag & CBAUD)) { + info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + spin_lock_irqsave(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } + + /* Handle transition away from B0 status */ + if (!(old_termios->c_cflag & CBAUD) && + tty->termios->c_cflag & CBAUD) { + info->serial_signals |= SerialSignal_DTR; + if (!(tty->termios->c_cflag & CRTSCTS) || + !test_bit(TTY_THROTTLED, &tty->flags)) { + info->serial_signals |= SerialSignal_RTS; + } + spin_lock_irqsave(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } + + /* Handle turning off CRTSCTS */ + if (old_termios->c_cflag & CRTSCTS && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + tx_release(tty); + } +} + +/* Send a block of data + * + * Arguments: + * + * tty pointer to tty information structure + * buf pointer to buffer containing send data + * count size of send data in bytes + * + * Return Value: number of characters written + */ +static int write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + int c, ret = 0; + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s write() count=%d\n", + __FILE__,__LINE__,info->device_name,count); + + if (sanity_check(info, tty->name, "write")) + goto cleanup; + + if (!info->tx_buf) + goto cleanup; + + if (info->params.mode == MGSL_MODE_HDLC) { + if (count > info->max_frame_size) { + ret = -EIO; + goto cleanup; + } + if (info->tx_active) + goto cleanup; + if (info->tx_count) { + /* send accumulated data from send_char() calls */ + /* as frame and wait before accepting more data. */ + tx_load_dma_buffer(info, info->tx_buf, info->tx_count); + goto start; + } + ret = info->tx_count = count; + tx_load_dma_buffer(info, buf, count); + goto start; + } + + for (;;) { + c = min_t(int, count, + min(info->max_frame_size - info->tx_count - 1, + info->max_frame_size - info->tx_put)); + if (c <= 0) + break; + + memcpy(info->tx_buf + info->tx_put, buf, c); + + spin_lock_irqsave(&info->lock,flags); + info->tx_put += c; + if (info->tx_put >= info->max_frame_size) + info->tx_put -= info->max_frame_size; + info->tx_count += c; + spin_unlock_irqrestore(&info->lock,flags); + + buf += c; + count -= c; + ret += c; + } + + if (info->params.mode == MGSL_MODE_HDLC) { + if (count) { + ret = info->tx_count = 0; + goto cleanup; + } + tx_load_dma_buffer(info, info->tx_buf, info->tx_count); + } +start: + if (info->tx_count && !tty->stopped && !tty->hw_stopped) { + spin_lock_irqsave(&info->lock,flags); + if (!info->tx_active) + tx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + } + +cleanup: + if (debug_level >= DEBUG_LEVEL_INFO) + printk( "%s(%d):%s write() returning=%d\n", + __FILE__,__LINE__,info->device_name,ret); + return ret; +} + +/* Add a character to the transmit buffer. + */ +static int put_char(struct tty_struct *tty, unsigned char ch) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + int ret = 0; + + if ( debug_level >= DEBUG_LEVEL_INFO ) { + printk( "%s(%d):%s put_char(%d)\n", + __FILE__,__LINE__,info->device_name,ch); + } + + if (sanity_check(info, tty->name, "put_char")) + return 0; + + if (!info->tx_buf) + return 0; + + spin_lock_irqsave(&info->lock,flags); + + if ( (info->params.mode != MGSL_MODE_HDLC) || + !info->tx_active ) { + + if (info->tx_count < info->max_frame_size - 1) { + info->tx_buf[info->tx_put++] = ch; + if (info->tx_put >= info->max_frame_size) + info->tx_put -= info->max_frame_size; + info->tx_count++; + ret = 1; + } + } + + spin_unlock_irqrestore(&info->lock,flags); + return ret; +} + +/* Send a high-priority XON/XOFF character + */ +static void send_xchar(struct tty_struct *tty, char ch) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s send_xchar(%d)\n", + __FILE__,__LINE__, info->device_name, ch ); + + if (sanity_check(info, tty->name, "send_xchar")) + return; + + info->x_char = ch; + if (ch) { + /* Make sure transmit interrupts are on */ + spin_lock_irqsave(&info->lock,flags); + if (!info->tx_enabled) + tx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + } +} + +/* Wait until the transmitter is empty. + */ +static void wait_until_sent(struct tty_struct *tty, int timeout) +{ + SLMP_INFO * info = tty->driver_data; + unsigned long orig_jiffies, char_time; + + if (!info ) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s wait_until_sent() entry\n", + __FILE__,__LINE__, info->device_name ); + + if (sanity_check(info, tty->name, "wait_until_sent")) + return; + + if (!test_bit(ASYNCB_INITIALIZED, &info->port.flags)) + goto exit; + + orig_jiffies = jiffies; + + /* Set check interval to 1/5 of estimated time to + * send a character, and make it at least 1. The check + * interval should also be less than the timeout. + * Note: use tight timings here to satisfy the NIST-PCTS. + */ + + if ( info->params.data_rate ) { + char_time = info->timeout/(32 * 5); + if (!char_time) + char_time++; + } else + char_time = 1; + + if (timeout) + char_time = min_t(unsigned long, char_time, timeout); + + if ( info->params.mode == MGSL_MODE_HDLC ) { + while (info->tx_active) { + msleep_interruptible(jiffies_to_msecs(char_time)); + if (signal_pending(current)) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } + } else { + /* + * TODO: determine if there is something similar to USC16C32 + * TXSTATUS_ALL_SENT status + */ + while ( info->tx_active && info->tx_enabled) { + msleep_interruptible(jiffies_to_msecs(char_time)); + if (signal_pending(current)) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } + } + +exit: + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s wait_until_sent() exit\n", + __FILE__,__LINE__, info->device_name ); +} + +/* Return the count of free bytes in transmit buffer + */ +static int write_room(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + int ret; + + if (sanity_check(info, tty->name, "write_room")) + return 0; + + if (info->params.mode == MGSL_MODE_HDLC) { + ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE; + } else { + ret = info->max_frame_size - info->tx_count - 1; + if (ret < 0) + ret = 0; + } + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s write_room()=%d\n", + __FILE__, __LINE__, info->device_name, ret); + + return ret; +} + +/* enable transmitter and send remaining buffered characters + */ +static void flush_chars(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s flush_chars() entry tx_count=%d\n", + __FILE__,__LINE__,info->device_name,info->tx_count); + + if (sanity_check(info, tty->name, "flush_chars")) + return; + + if (info->tx_count <= 0 || tty->stopped || tty->hw_stopped || + !info->tx_buf) + return; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s flush_chars() entry, starting transmitter\n", + __FILE__,__LINE__,info->device_name ); + + spin_lock_irqsave(&info->lock,flags); + + if (!info->tx_active) { + if ( (info->params.mode == MGSL_MODE_HDLC) && + info->tx_count ) { + /* operating in synchronous (frame oriented) mode */ + /* copy data from circular tx_buf to */ + /* transmit DMA buffer. */ + tx_load_dma_buffer(info, + info->tx_buf,info->tx_count); + } + tx_start(info); + } + + spin_unlock_irqrestore(&info->lock,flags); +} + +/* Discard all data in the send buffer + */ +static void flush_buffer(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s flush_buffer() entry\n", + __FILE__,__LINE__, info->device_name ); + + if (sanity_check(info, tty->name, "flush_buffer")) + return; + + spin_lock_irqsave(&info->lock,flags); + info->tx_count = info->tx_put = info->tx_get = 0; + del_timer(&info->tx_timer); + spin_unlock_irqrestore(&info->lock,flags); + + tty_wakeup(tty); +} + +/* throttle (stop) transmitter + */ +static void tx_hold(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "tx_hold")) + return; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("%s(%d):%s tx_hold()\n", + __FILE__,__LINE__,info->device_name); + + spin_lock_irqsave(&info->lock,flags); + if (info->tx_enabled) + tx_stop(info); + spin_unlock_irqrestore(&info->lock,flags); +} + +/* release (start) transmitter + */ +static void tx_release(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (sanity_check(info, tty->name, "tx_release")) + return; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("%s(%d):%s tx_release()\n", + __FILE__,__LINE__,info->device_name); + + spin_lock_irqsave(&info->lock,flags); + if (!info->tx_enabled) + tx_start(info); + spin_unlock_irqrestore(&info->lock,flags); +} + +/* Service an IOCTL request + * + * Arguments: + * + * tty pointer to tty instance data + * cmd IOCTL command code + * arg command argument/context + * + * Return Value: 0 if success, otherwise error code + */ +static int ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + SLMP_INFO *info = tty->driver_data; + void __user *argp = (void __user *)arg; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s ioctl() cmd=%08X\n", __FILE__,__LINE__, + info->device_name, cmd ); + + if (sanity_check(info, tty->name, "ioctl")) + return -ENODEV; + + if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && + (cmd != TIOCMIWAIT)) { + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + } + + switch (cmd) { + case MGSL_IOCGPARAMS: + return get_params(info, argp); + case MGSL_IOCSPARAMS: + return set_params(info, argp); + case MGSL_IOCGTXIDLE: + return get_txidle(info, argp); + case MGSL_IOCSTXIDLE: + return set_txidle(info, (int)arg); + case MGSL_IOCTXENABLE: + return tx_enable(info, (int)arg); + case MGSL_IOCRXENABLE: + return rx_enable(info, (int)arg); + case MGSL_IOCTXABORT: + return tx_abort(info); + case MGSL_IOCGSTATS: + return get_stats(info, argp); + case MGSL_IOCWAITEVENT: + return wait_mgsl_event(info, argp); + case MGSL_IOCLOOPTXDONE: + return 0; // TODO: Not supported, need to document + /* Wait for modem input (DCD,RI,DSR,CTS) change + * as specified by mask in arg (TIOCM_RNG/DSR/CD/CTS) + */ + case TIOCMIWAIT: + return modem_input_wait(info,(int)arg); + + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ + default: + return -ENOIOCTLCMD; + } + return 0; +} + +static int get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + SLMP_INFO *info = tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->lock,flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; +} + +/* + * /proc fs routines.... + */ + +static inline void line_info(struct seq_file *m, SLMP_INFO *info) +{ + char stat_buf[30]; + unsigned long flags; + + seq_printf(m, "%s: SCABase=%08x Mem=%08X StatusControl=%08x LCR=%08X\n" + "\tIRQ=%d MaxFrameSize=%u\n", + info->device_name, + info->phys_sca_base, + info->phys_memory_base, + info->phys_statctrl_base, + info->phys_lcr_base, + info->irq_level, + info->max_frame_size ); + + /* output current serial signal states */ + spin_lock_irqsave(&info->lock,flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + + stat_buf[0] = 0; + stat_buf[1] = 0; + if (info->serial_signals & SerialSignal_RTS) + strcat(stat_buf, "|RTS"); + if (info->serial_signals & SerialSignal_CTS) + strcat(stat_buf, "|CTS"); + if (info->serial_signals & SerialSignal_DTR) + strcat(stat_buf, "|DTR"); + if (info->serial_signals & SerialSignal_DSR) + strcat(stat_buf, "|DSR"); + if (info->serial_signals & SerialSignal_DCD) + strcat(stat_buf, "|CD"); + if (info->serial_signals & SerialSignal_RI) + strcat(stat_buf, "|RI"); + + if (info->params.mode == MGSL_MODE_HDLC) { + seq_printf(m, "\tHDLC txok:%d rxok:%d", + info->icount.txok, info->icount.rxok); + if (info->icount.txunder) + seq_printf(m, " txunder:%d", info->icount.txunder); + if (info->icount.txabort) + seq_printf(m, " txabort:%d", info->icount.txabort); + if (info->icount.rxshort) + seq_printf(m, " rxshort:%d", info->icount.rxshort); + if (info->icount.rxlong) + seq_printf(m, " rxlong:%d", info->icount.rxlong); + if (info->icount.rxover) + seq_printf(m, " rxover:%d", info->icount.rxover); + if (info->icount.rxcrc) + seq_printf(m, " rxlong:%d", info->icount.rxcrc); + } else { + seq_printf(m, "\tASYNC tx:%d rx:%d", + info->icount.tx, info->icount.rx); + if (info->icount.frame) + seq_printf(m, " fe:%d", info->icount.frame); + if (info->icount.parity) + seq_printf(m, " pe:%d", info->icount.parity); + if (info->icount.brk) + seq_printf(m, " brk:%d", info->icount.brk); + if (info->icount.overrun) + seq_printf(m, " oe:%d", info->icount.overrun); + } + + /* Append serial signal status to end */ + seq_printf(m, " %s\n", stat_buf+1); + + seq_printf(m, "\ttxactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", + info->tx_active,info->bh_requested,info->bh_running, + info->pending_bh); +} + +/* Called to print information about devices + */ +static int synclinkmp_proc_show(struct seq_file *m, void *v) +{ + SLMP_INFO *info; + + seq_printf(m, "synclinkmp driver:%s\n", driver_version); + + info = synclinkmp_device_list; + while( info ) { + line_info(m, info); + info = info->next_device; + } + return 0; +} + +static int synclinkmp_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, synclinkmp_proc_show, NULL); +} + +static const struct file_operations synclinkmp_proc_fops = { + .owner = THIS_MODULE, + .open = synclinkmp_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* Return the count of bytes in transmit buffer + */ +static int chars_in_buffer(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + + if (sanity_check(info, tty->name, "chars_in_buffer")) + return 0; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s chars_in_buffer()=%d\n", + __FILE__, __LINE__, info->device_name, info->tx_count); + + return info->tx_count; +} + +/* Signal remote device to throttle send data (our receive data) + */ +static void throttle(struct tty_struct * tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s throttle() entry\n", + __FILE__,__LINE__, info->device_name ); + + if (sanity_check(info, tty->name, "throttle")) + return; + + if (I_IXOFF(tty)) + send_xchar(tty, STOP_CHAR(tty)); + + if (tty->termios->c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->lock,flags); + info->serial_signals &= ~SerialSignal_RTS; + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } +} + +/* Signal remote device to stop throttling send data (our receive data) + */ +static void unthrottle(struct tty_struct * tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s unthrottle() entry\n", + __FILE__,__LINE__, info->device_name ); + + if (sanity_check(info, tty->name, "unthrottle")) + return; + + if (I_IXOFF(tty)) { + if (info->x_char) + info->x_char = 0; + else + send_xchar(tty, START_CHAR(tty)); + } + + if (tty->termios->c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->lock,flags); + info->serial_signals |= SerialSignal_RTS; + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + } +} + +/* set or clear transmit break condition + * break_state -1=set break condition, 0=clear + */ +static int set_break(struct tty_struct *tty, int break_state) +{ + unsigned char RegValue; + SLMP_INFO * info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s set_break(%d)\n", + __FILE__,__LINE__, info->device_name, break_state); + + if (sanity_check(info, tty->name, "set_break")) + return -EINVAL; + + spin_lock_irqsave(&info->lock,flags); + RegValue = read_reg(info, CTL); + if (break_state == -1) + RegValue |= BIT3; + else + RegValue &= ~BIT3; + write_reg(info, CTL, RegValue); + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +#if SYNCLINK_GENERIC_HDLC + +/** + * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) + * set encoding and frame check sequence (FCS) options + * + * dev pointer to network device structure + * encoding serial encoding setting + * parity FCS setting + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, + unsigned short parity) +{ + SLMP_INFO *info = dev_to_port(dev); + unsigned char new_encoding; + unsigned short new_crctype; + + /* return error if TTY interface open */ + if (info->port.count) + return -EBUSY; + + switch (encoding) + { + case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break; + case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break; + case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break; + case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break; + case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break; + default: return -EINVAL; + } + + switch (parity) + { + case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break; + case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break; + case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break; + default: return -EINVAL; + } + + info->params.encoding = new_encoding; + info->params.crc_type = new_crctype; + + /* if network interface up, reprogram hardware */ + if (info->netcount) + program_hw(info); + + return 0; +} + +/** + * called by generic HDLC layer to send frame + * + * skb socket buffer containing HDLC frame + * dev pointer to network device structure + */ +static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + SLMP_INFO *info = dev_to_port(dev); + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); + + /* stop sending until this frame completes */ + netif_stop_queue(dev); + + /* copy data to device buffers */ + info->tx_count = skb->len; + tx_load_dma_buffer(info, skb->data, skb->len); + + /* update network statistics */ + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; + + /* done with socket buffer, so free it */ + dev_kfree_skb(skb); + + /* save start time for transmit timeout detection */ + dev->trans_start = jiffies; + + /* start hardware transmitter if necessary */ + spin_lock_irqsave(&info->lock,flags); + if (!info->tx_active) + tx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + + return NETDEV_TX_OK; +} + +/** + * called by network layer when interface enabled + * claim resources and initialize hardware + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_open(struct net_device *dev) +{ + SLMP_INFO *info = dev_to_port(dev); + int rc; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); + + /* generic HDLC layer open processing */ + if ((rc = hdlc_open(dev))) + return rc; + + /* arbitrate between network and tty opens */ + spin_lock_irqsave(&info->netlock, flags); + if (info->port.count != 0 || info->netcount != 0) { + printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); + spin_unlock_irqrestore(&info->netlock, flags); + return -EBUSY; + } + info->netcount=1; + spin_unlock_irqrestore(&info->netlock, flags); + + /* claim resources and init adapter */ + if ((rc = startup(info)) != 0) { + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + return rc; + } + + /* assert DTR and RTS, apply hardware settings */ + info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; + program_hw(info); + + /* enable network layer transmit */ + dev->trans_start = jiffies; + netif_start_queue(dev); + + /* inform generic HDLC layer of current DCD status */ + spin_lock_irqsave(&info->lock, flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock, flags); + if (info->serial_signals & SerialSignal_DCD) + netif_carrier_on(dev); + else + netif_carrier_off(dev); + return 0; +} + +/** + * called by network layer when interface is disabled + * shutdown hardware and release resources + * + * dev pointer to network device structure + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_close(struct net_device *dev) +{ + SLMP_INFO *info = dev_to_port(dev); + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); + + netif_stop_queue(dev); + + /* shutdown adapter and release resources */ + shutdown(info); + + hdlc_close(dev); + + spin_lock_irqsave(&info->netlock, flags); + info->netcount=0; + spin_unlock_irqrestore(&info->netlock, flags); + + return 0; +} + +/** + * called by network layer to process IOCTL call to network device + * + * dev pointer to network device structure + * ifr pointer to network interface request structure + * cmd IOCTL command code + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + const size_t size = sizeof(sync_serial_settings); + sync_serial_settings new_line; + sync_serial_settings __user *line = ifr->ifr_settings.ifs_ifsu.sync; + SLMP_INFO *info = dev_to_port(dev); + unsigned int flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); + + /* return error if TTY interface open */ + if (info->port.count) + return -EBUSY; + + if (cmd != SIOCWANDEV) + return hdlc_ioctl(dev, ifr, cmd); + + switch(ifr->ifr_settings.type) { + case IF_GET_IFACE: /* return current sync_serial_settings */ + + ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; + if (ifr->ifr_settings.size < size) { + ifr->ifr_settings.size = size; /* data size wanted */ + return -ENOBUFS; + } + + flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + + switch (flags){ + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break; + case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break; + case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break; + default: new_line.clock_type = CLOCK_DEFAULT; + } + + new_line.clock_rate = info->params.clock_speed; + new_line.loopback = info->params.loopback ? 1:0; + + if (copy_to_user(line, &new_line, size)) + return -EFAULT; + return 0; + + case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */ + + if(!capable(CAP_NET_ADMIN)) + return -EPERM; + if (copy_from_user(&new_line, line, size)) + return -EFAULT; + + switch (new_line.clock_type) + { + case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break; + case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break; + case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break; + case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break; + case CLOCK_DEFAULT: flags = info->params.flags & + (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break; + default: return -EINVAL; + } + + if (new_line.loopback != 0 && new_line.loopback != 1) + return -EINVAL; + + info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL | + HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN | + HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL | + HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); + info->params.flags |= flags; + + info->params.loopback = new_line.loopback; + + if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG)) + info->params.clock_speed = new_line.clock_rate; + else + info->params.clock_speed = 0; + + /* if network interface up, reprogram hardware */ + if (info->netcount) + program_hw(info); + return 0; + + default: + return hdlc_ioctl(dev, ifr, cmd); + } +} + +/** + * called by network layer when transmit timeout is detected + * + * dev pointer to network device structure + */ +static void hdlcdev_tx_timeout(struct net_device *dev) +{ + SLMP_INFO *info = dev_to_port(dev); + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("hdlcdev_tx_timeout(%s)\n",dev->name); + + dev->stats.tx_errors++; + dev->stats.tx_aborted_errors++; + + spin_lock_irqsave(&info->lock,flags); + tx_stop(info); + spin_unlock_irqrestore(&info->lock,flags); + + netif_wake_queue(dev); +} + +/** + * called by device driver when transmit completes + * reenable network layer transmit if stopped + * + * info pointer to device instance information + */ +static void hdlcdev_tx_done(SLMP_INFO *info) +{ + if (netif_queue_stopped(info->netdev)) + netif_wake_queue(info->netdev); +} + +/** + * called by device driver when frame received + * pass frame to network layer + * + * info pointer to device instance information + * buf pointer to buffer contianing frame data + * size count of data bytes in buf + */ +static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size) +{ + struct sk_buff *skb = dev_alloc_skb(size); + struct net_device *dev = info->netdev; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("hdlcdev_rx(%s)\n",dev->name); + + if (skb == NULL) { + printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", + dev->name); + dev->stats.rx_dropped++; + return; + } + + memcpy(skb_put(skb, size), buf, size); + + skb->protocol = hdlc_type_trans(skb, dev); + + dev->stats.rx_packets++; + dev->stats.rx_bytes += size; + + netif_rx(skb); +} + +static const struct net_device_ops hdlcdev_ops = { + .ndo_open = hdlcdev_open, + .ndo_stop = hdlcdev_close, + .ndo_change_mtu = hdlc_change_mtu, + .ndo_start_xmit = hdlc_start_xmit, + .ndo_do_ioctl = hdlcdev_ioctl, + .ndo_tx_timeout = hdlcdev_tx_timeout, +}; + +/** + * called by device driver when adding device instance + * do generic HDLC initialization + * + * info pointer to device instance information + * + * returns 0 if success, otherwise error code + */ +static int hdlcdev_init(SLMP_INFO *info) +{ + int rc; + struct net_device *dev; + hdlc_device *hdlc; + + /* allocate and initialize network and HDLC layer objects */ + + if (!(dev = alloc_hdlcdev(info))) { + printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); + return -ENOMEM; + } + + /* for network layer reporting purposes only */ + dev->mem_start = info->phys_sca_base; + dev->mem_end = info->phys_sca_base + SCA_BASE_SIZE - 1; + dev->irq = info->irq_level; + + /* network layer callbacks and settings */ + dev->netdev_ops = &hdlcdev_ops; + dev->watchdog_timeo = 10 * HZ; + dev->tx_queue_len = 50; + + /* generic HDLC layer callbacks and settings */ + hdlc = dev_to_hdlc(dev); + hdlc->attach = hdlcdev_attach; + hdlc->xmit = hdlcdev_xmit; + + /* register objects with HDLC layer */ + if ((rc = register_hdlc_device(dev))) { + printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); + free_netdev(dev); + return rc; + } + + info->netdev = dev; + return 0; +} + +/** + * called by device driver when removing device instance + * do generic HDLC cleanup + * + * info pointer to device instance information + */ +static void hdlcdev_exit(SLMP_INFO *info) +{ + unregister_hdlc_device(info->netdev); + free_netdev(info->netdev); + info->netdev = NULL; +} + +#endif /* CONFIG_HDLC */ + + +/* Return next bottom half action to perform. + * Return Value: BH action code or 0 if nothing to do. + */ +static int bh_action(SLMP_INFO *info) +{ + unsigned long flags; + int rc = 0; + + spin_lock_irqsave(&info->lock,flags); + + if (info->pending_bh & BH_RECEIVE) { + info->pending_bh &= ~BH_RECEIVE; + rc = BH_RECEIVE; + } else if (info->pending_bh & BH_TRANSMIT) { + info->pending_bh &= ~BH_TRANSMIT; + rc = BH_TRANSMIT; + } else if (info->pending_bh & BH_STATUS) { + info->pending_bh &= ~BH_STATUS; + rc = BH_STATUS; + } + + if (!rc) { + /* Mark BH routine as complete */ + info->bh_running = false; + info->bh_requested = false; + } + + spin_unlock_irqrestore(&info->lock,flags); + + return rc; +} + +/* Perform bottom half processing of work items queued by ISR. + */ +static void bh_handler(struct work_struct *work) +{ + SLMP_INFO *info = container_of(work, SLMP_INFO, task); + int action; + + if (!info) + return; + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):%s bh_handler() entry\n", + __FILE__,__LINE__,info->device_name); + + info->bh_running = true; + + while((action = bh_action(info)) != 0) { + + /* Process work item */ + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):%s bh_handler() work item action=%d\n", + __FILE__,__LINE__,info->device_name, action); + + switch (action) { + + case BH_RECEIVE: + bh_receive(info); + break; + case BH_TRANSMIT: + bh_transmit(info); + break; + case BH_STATUS: + bh_status(info); + break; + default: + /* unknown work item ID */ + printk("%s(%d):%s Unknown work item ID=%08X!\n", + __FILE__,__LINE__,info->device_name,action); + break; + } + } + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):%s bh_handler() exit\n", + __FILE__,__LINE__,info->device_name); +} + +static void bh_receive(SLMP_INFO *info) +{ + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):%s bh_receive()\n", + __FILE__,__LINE__,info->device_name); + + while( rx_get_frame(info) ); +} + +static void bh_transmit(SLMP_INFO *info) +{ + struct tty_struct *tty = info->port.tty; + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):%s bh_transmit() entry\n", + __FILE__,__LINE__,info->device_name); + + if (tty) + tty_wakeup(tty); +} + +static void bh_status(SLMP_INFO *info) +{ + if ( debug_level >= DEBUG_LEVEL_BH ) + printk( "%s(%d):%s bh_status() entry\n", + __FILE__,__LINE__,info->device_name); + + info->ri_chkcount = 0; + info->dsr_chkcount = 0; + info->dcd_chkcount = 0; + info->cts_chkcount = 0; +} + +static void isr_timer(SLMP_INFO * info) +{ + unsigned char timer = (info->port_num & 1) ? TIMER2 : TIMER0; + + /* IER2<7..4> = timer<3..0> interrupt enables (0=disabled) */ + write_reg(info, IER2, 0); + + /* TMCS, Timer Control/Status Register + * + * 07 CMF, Compare match flag (read only) 1=match + * 06 ECMI, CMF Interrupt Enable: 0=disabled + * 05 Reserved, must be 0 + * 04 TME, Timer Enable + * 03..00 Reserved, must be 0 + * + * 0000 0000 + */ + write_reg(info, (unsigned char)(timer + TMCS), 0); + + info->irq_occurred = true; + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_timer()\n", + __FILE__,__LINE__,info->device_name); +} + +static void isr_rxint(SLMP_INFO * info) +{ + struct tty_struct *tty = info->port.tty; + struct mgsl_icount *icount = &info->icount; + unsigned char status = read_reg(info, SR1) & info->ie1_value & (FLGD + IDLD + CDCD + BRKD); + unsigned char status2 = read_reg(info, SR2) & info->ie2_value & OVRN; + + /* clear status bits */ + if (status) + write_reg(info, SR1, status); + + if (status2) + write_reg(info, SR2, status2); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_rxint status=%02X %02x\n", + __FILE__,__LINE__,info->device_name,status,status2); + + if (info->params.mode == MGSL_MODE_ASYNC) { + if (status & BRKD) { + icount->brk++; + + /* process break detection if tty control + * is not set to ignore it + */ + if ( tty ) { + if (!(status & info->ignore_status_mask1)) { + if (info->read_status_mask1 & BRKD) { + tty_insert_flip_char(tty, 0, TTY_BREAK); + if (info->port.flags & ASYNC_SAK) + do_SAK(tty); + } + } + } + } + } + else { + if (status & (FLGD|IDLD)) { + if (status & FLGD) + info->icount.exithunt++; + else if (status & IDLD) + info->icount.rxidle++; + wake_up_interruptible(&info->event_wait_q); + } + } + + if (status & CDCD) { + /* simulate a common modem status change interrupt + * for our handler + */ + get_signals( info ); + isr_io_pin(info, + MISCSTATUS_DCD_LATCHED|(info->serial_signals&SerialSignal_DCD)); + } +} + +/* + * handle async rx data interrupts + */ +static void isr_rxrdy(SLMP_INFO * info) +{ + u16 status; + unsigned char DataByte; + struct tty_struct *tty = info->port.tty; + struct mgsl_icount *icount = &info->icount; + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_rxrdy\n", + __FILE__,__LINE__,info->device_name); + + while((status = read_reg(info,CST0)) & BIT0) + { + int flag = 0; + bool over = false; + DataByte = read_reg(info,TRB); + + icount->rx++; + + if ( status & (PE + FRME + OVRN) ) { + printk("%s(%d):%s rxerr=%04X\n", + __FILE__,__LINE__,info->device_name,status); + + /* update error statistics */ + if (status & PE) + icount->parity++; + else if (status & FRME) + icount->frame++; + else if (status & OVRN) + icount->overrun++; + + /* discard char if tty control flags say so */ + if (status & info->ignore_status_mask2) + continue; + + status &= info->read_status_mask2; + + if ( tty ) { + if (status & PE) + flag = TTY_PARITY; + else if (status & FRME) + flag = TTY_FRAME; + if (status & OVRN) { + /* Overrun is special, since it's + * reported immediately, and doesn't + * affect the current character + */ + over = true; + } + } + } /* end of if (error) */ + + if ( tty ) { + tty_insert_flip_char(tty, DataByte, flag); + if (over) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + } + } + + if ( debug_level >= DEBUG_LEVEL_ISR ) { + printk("%s(%d):%s rx=%d brk=%d parity=%d frame=%d overrun=%d\n", + __FILE__,__LINE__,info->device_name, + icount->rx,icount->brk,icount->parity, + icount->frame,icount->overrun); + } + + if ( tty ) + tty_flip_buffer_push(tty); +} + +static void isr_txeom(SLMP_INFO * info, unsigned char status) +{ + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_txeom status=%02x\n", + __FILE__,__LINE__,info->device_name,status); + + write_reg(info, TXDMA + DIR, 0x00); /* disable Tx DMA IRQs */ + write_reg(info, TXDMA + DSR, 0xc0); /* clear IRQs and disable DMA */ + write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ + + if (status & UDRN) { + write_reg(info, CMD, TXRESET); + write_reg(info, CMD, TXENABLE); + } else + write_reg(info, CMD, TXBUFCLR); + + /* disable and clear tx interrupts */ + info->ie0_value &= ~TXRDYE; + info->ie1_value &= ~(IDLE + UDRN); + write_reg16(info, IE0, (unsigned short)((info->ie1_value << 8) + info->ie0_value)); + write_reg(info, SR1, (unsigned char)(UDRN + IDLE)); + + if ( info->tx_active ) { + if (info->params.mode != MGSL_MODE_ASYNC) { + if (status & UDRN) + info->icount.txunder++; + else if (status & IDLE) + info->icount.txok++; + } + + info->tx_active = false; + info->tx_count = info->tx_put = info->tx_get = 0; + + del_timer(&info->tx_timer); + + if (info->params.mode != MGSL_MODE_ASYNC && info->drop_rts_on_tx_done ) { + info->serial_signals &= ~SerialSignal_RTS; + info->drop_rts_on_tx_done = false; + set_signals(info); + } + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_tx_done(info); + else +#endif + { + if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) { + tx_stop(info); + return; + } + info->pending_bh |= BH_TRANSMIT; + } + } +} + + +/* + * handle tx status interrupts + */ +static void isr_txint(SLMP_INFO * info) +{ + unsigned char status = read_reg(info, SR1) & info->ie1_value & (UDRN + IDLE + CCTS); + + /* clear status bits */ + write_reg(info, SR1, status); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_txint status=%02x\n", + __FILE__,__LINE__,info->device_name,status); + + if (status & (UDRN + IDLE)) + isr_txeom(info, status); + + if (status & CCTS) { + /* simulate a common modem status change interrupt + * for our handler + */ + get_signals( info ); + isr_io_pin(info, + MISCSTATUS_CTS_LATCHED|(info->serial_signals&SerialSignal_CTS)); + + } +} + +/* + * handle async tx data interrupts + */ +static void isr_txrdy(SLMP_INFO * info) +{ + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_txrdy() tx_count=%d\n", + __FILE__,__LINE__,info->device_name,info->tx_count); + + if (info->params.mode != MGSL_MODE_ASYNC) { + /* disable TXRDY IRQ, enable IDLE IRQ */ + info->ie0_value &= ~TXRDYE; + info->ie1_value |= IDLE; + write_reg16(info, IE0, (unsigned short)((info->ie1_value << 8) + info->ie0_value)); + return; + } + + if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) { + tx_stop(info); + return; + } + + if ( info->tx_count ) + tx_load_fifo( info ); + else { + info->tx_active = false; + info->ie0_value &= ~TXRDYE; + write_reg(info, IE0, info->ie0_value); + } + + if (info->tx_count < WAKEUP_CHARS) + info->pending_bh |= BH_TRANSMIT; +} + +static void isr_rxdmaok(SLMP_INFO * info) +{ + /* BIT7 = EOT (end of transfer) + * BIT6 = EOM (end of message/frame) + */ + unsigned char status = read_reg(info,RXDMA + DSR) & 0xc0; + + /* clear IRQ (BIT0 must be 1 to prevent clearing DE bit) */ + write_reg(info, RXDMA + DSR, (unsigned char)(status | 1)); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_rxdmaok(), status=%02x\n", + __FILE__,__LINE__,info->device_name,status); + + info->pending_bh |= BH_RECEIVE; +} + +static void isr_rxdmaerror(SLMP_INFO * info) +{ + /* BIT5 = BOF (buffer overflow) + * BIT4 = COF (counter overflow) + */ + unsigned char status = read_reg(info,RXDMA + DSR) & 0x30; + + /* clear IRQ (BIT0 must be 1 to prevent clearing DE bit) */ + write_reg(info, RXDMA + DSR, (unsigned char)(status | 1)); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_rxdmaerror(), status=%02x\n", + __FILE__,__LINE__,info->device_name,status); + + info->rx_overflow = true; + info->pending_bh |= BH_RECEIVE; +} + +static void isr_txdmaok(SLMP_INFO * info) +{ + unsigned char status_reg1 = read_reg(info, SR1); + + write_reg(info, TXDMA + DIR, 0x00); /* disable Tx DMA IRQs */ + write_reg(info, TXDMA + DSR, 0xc0); /* clear IRQs and disable DMA */ + write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_txdmaok(), status=%02x\n", + __FILE__,__LINE__,info->device_name,status_reg1); + + /* program TXRDY as FIFO empty flag, enable TXRDY IRQ */ + write_reg16(info, TRC0, 0); + info->ie0_value |= TXRDYE; + write_reg(info, IE0, info->ie0_value); +} + +static void isr_txdmaerror(SLMP_INFO * info) +{ + /* BIT5 = BOF (buffer overflow) + * BIT4 = COF (counter overflow) + */ + unsigned char status = read_reg(info,TXDMA + DSR) & 0x30; + + /* clear IRQ (BIT0 must be 1 to prevent clearing DE bit) */ + write_reg(info, TXDMA + DSR, (unsigned char)(status | 1)); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s isr_txdmaerror(), status=%02x\n", + __FILE__,__LINE__,info->device_name,status); +} + +/* handle input serial signal changes + */ +static void isr_io_pin( SLMP_INFO *info, u16 status ) +{ + struct mgsl_icount *icount; + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):isr_io_pin status=%04X\n", + __FILE__,__LINE__,status); + + if (status & (MISCSTATUS_CTS_LATCHED | MISCSTATUS_DCD_LATCHED | + MISCSTATUS_DSR_LATCHED | MISCSTATUS_RI_LATCHED) ) { + icount = &info->icount; + /* update input line counters */ + if (status & MISCSTATUS_RI_LATCHED) { + icount->rng++; + if ( status & SerialSignal_RI ) + info->input_signal_events.ri_up++; + else + info->input_signal_events.ri_down++; + } + if (status & MISCSTATUS_DSR_LATCHED) { + icount->dsr++; + if ( status & SerialSignal_DSR ) + info->input_signal_events.dsr_up++; + else + info->input_signal_events.dsr_down++; + } + if (status & MISCSTATUS_DCD_LATCHED) { + if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) { + info->ie1_value &= ~CDCD; + write_reg(info, IE1, info->ie1_value); + } + icount->dcd++; + if (status & SerialSignal_DCD) { + info->input_signal_events.dcd_up++; + } else + info->input_signal_events.dcd_down++; +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) { + if (status & SerialSignal_DCD) + netif_carrier_on(info->netdev); + else + netif_carrier_off(info->netdev); + } +#endif + } + if (status & MISCSTATUS_CTS_LATCHED) + { + if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) { + info->ie1_value &= ~CCTS; + write_reg(info, IE1, info->ie1_value); + } + icount->cts++; + if ( status & SerialSignal_CTS ) + info->input_signal_events.cts_up++; + else + info->input_signal_events.cts_down++; + } + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + + if ( (info->port.flags & ASYNC_CHECK_CD) && + (status & MISCSTATUS_DCD_LATCHED) ) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s CD now %s...", info->device_name, + (status & SerialSignal_DCD) ? "on" : "off"); + if (status & SerialSignal_DCD) + wake_up_interruptible(&info->port.open_wait); + else { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("doing serial hangup..."); + if (info->port.tty) + tty_hangup(info->port.tty); + } + } + + if ( (info->port.flags & ASYNC_CTS_FLOW) && + (status & MISCSTATUS_CTS_LATCHED) ) { + if ( info->port.tty ) { + if (info->port.tty->hw_stopped) { + if (status & SerialSignal_CTS) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("CTS tx start..."); + info->port.tty->hw_stopped = 0; + tx_start(info); + info->pending_bh |= BH_TRANSMIT; + return; + } + } else { + if (!(status & SerialSignal_CTS)) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("CTS tx stop..."); + info->port.tty->hw_stopped = 1; + tx_stop(info); + } + } + } + } + } + + info->pending_bh |= BH_STATUS; +} + +/* Interrupt service routine entry point. + * + * Arguments: + * irq interrupt number that caused interrupt + * dev_id device ID supplied during interrupt registration + * regs interrupted processor context + */ +static irqreturn_t synclinkmp_interrupt(int dummy, void *dev_id) +{ + SLMP_INFO *info = dev_id; + unsigned char status, status0, status1=0; + unsigned char dmastatus, dmastatus0, dmastatus1=0; + unsigned char timerstatus0, timerstatus1=0; + unsigned char shift; + unsigned int i; + unsigned short tmp; + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk(KERN_DEBUG "%s(%d): synclinkmp_interrupt(%d)entry.\n", + __FILE__, __LINE__, info->irq_level); + + spin_lock(&info->lock); + + for(;;) { + + /* get status for SCA0 (ports 0-1) */ + tmp = read_reg16(info, ISR0); /* get ISR0 and ISR1 in one read */ + status0 = (unsigned char)tmp; + dmastatus0 = (unsigned char)(tmp>>8); + timerstatus0 = read_reg(info, ISR2); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk(KERN_DEBUG "%s(%d):%s status0=%02x, dmastatus0=%02x, timerstatus0=%02x\n", + __FILE__, __LINE__, info->device_name, + status0, dmastatus0, timerstatus0); + + if (info->port_count == 4) { + /* get status for SCA1 (ports 2-3) */ + tmp = read_reg16(info->port_array[2], ISR0); + status1 = (unsigned char)tmp; + dmastatus1 = (unsigned char)(tmp>>8); + timerstatus1 = read_reg(info->port_array[2], ISR2); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s status1=%02x, dmastatus1=%02x, timerstatus1=%02x\n", + __FILE__,__LINE__,info->device_name, + status1,dmastatus1,timerstatus1); + } + + if (!status0 && !dmastatus0 && !timerstatus0 && + !status1 && !dmastatus1 && !timerstatus1) + break; + + for(i=0; i < info->port_count ; i++) { + if (info->port_array[i] == NULL) + continue; + if (i < 2) { + status = status0; + dmastatus = dmastatus0; + } else { + status = status1; + dmastatus = dmastatus1; + } + + shift = i & 1 ? 4 :0; + + if (status & BIT0 << shift) + isr_rxrdy(info->port_array[i]); + if (status & BIT1 << shift) + isr_txrdy(info->port_array[i]); + if (status & BIT2 << shift) + isr_rxint(info->port_array[i]); + if (status & BIT3 << shift) + isr_txint(info->port_array[i]); + + if (dmastatus & BIT0 << shift) + isr_rxdmaerror(info->port_array[i]); + if (dmastatus & BIT1 << shift) + isr_rxdmaok(info->port_array[i]); + if (dmastatus & BIT2 << shift) + isr_txdmaerror(info->port_array[i]); + if (dmastatus & BIT3 << shift) + isr_txdmaok(info->port_array[i]); + } + + if (timerstatus0 & (BIT5 | BIT4)) + isr_timer(info->port_array[0]); + if (timerstatus0 & (BIT7 | BIT6)) + isr_timer(info->port_array[1]); + if (timerstatus1 & (BIT5 | BIT4)) + isr_timer(info->port_array[2]); + if (timerstatus1 & (BIT7 | BIT6)) + isr_timer(info->port_array[3]); + } + + for(i=0; i < info->port_count ; i++) { + SLMP_INFO * port = info->port_array[i]; + + /* Request bottom half processing if there's something + * for it to do and the bh is not already running. + * + * Note: startup adapter diags require interrupts. + * do not request bottom half processing if the + * device is not open in a normal mode. + */ + if ( port && (port->port.count || port->netcount) && + port->pending_bh && !port->bh_running && + !port->bh_requested ) { + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk("%s(%d):%s queueing bh task.\n", + __FILE__,__LINE__,port->device_name); + schedule_work(&port->task); + port->bh_requested = true; + } + } + + spin_unlock(&info->lock); + + if ( debug_level >= DEBUG_LEVEL_ISR ) + printk(KERN_DEBUG "%s(%d):synclinkmp_interrupt(%d)exit.\n", + __FILE__, __LINE__, info->irq_level); + return IRQ_HANDLED; +} + +/* Initialize and start device. + */ +static int startup(SLMP_INFO * info) +{ + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("%s(%d):%s tx_releaseup()\n",__FILE__,__LINE__,info->device_name); + + if (info->port.flags & ASYNC_INITIALIZED) + return 0; + + if (!info->tx_buf) { + info->tx_buf = kmalloc(info->max_frame_size, GFP_KERNEL); + if (!info->tx_buf) { + printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n", + __FILE__,__LINE__,info->device_name); + return -ENOMEM; + } + } + + info->pending_bh = 0; + + memset(&info->icount, 0, sizeof(info->icount)); + + /* program hardware for current parameters */ + reset_port(info); + + change_params(info); + + mod_timer(&info->status_timer, jiffies + msecs_to_jiffies(10)); + + if (info->port.tty) + clear_bit(TTY_IO_ERROR, &info->port.tty->flags); + + info->port.flags |= ASYNC_INITIALIZED; + + return 0; +} + +/* Called by close() and hangup() to shutdown hardware + */ +static void shutdown(SLMP_INFO * info) +{ + unsigned long flags; + + if (!(info->port.flags & ASYNC_INITIALIZED)) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s synclinkmp_shutdown()\n", + __FILE__,__LINE__, info->device_name ); + + /* clear status wait queue because status changes */ + /* can't happen after shutting down the hardware */ + wake_up_interruptible(&info->status_event_wait_q); + wake_up_interruptible(&info->event_wait_q); + + del_timer(&info->tx_timer); + del_timer(&info->status_timer); + + kfree(info->tx_buf); + info->tx_buf = NULL; + + spin_lock_irqsave(&info->lock,flags); + + reset_port(info); + + if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) { + info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); + set_signals(info); + } + + spin_unlock_irqrestore(&info->lock,flags); + + if (info->port.tty) + set_bit(TTY_IO_ERROR, &info->port.tty->flags); + + info->port.flags &= ~ASYNC_INITIALIZED; +} + +static void program_hw(SLMP_INFO *info) +{ + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + + rx_stop(info); + tx_stop(info); + + info->tx_count = info->tx_put = info->tx_get = 0; + + if (info->params.mode == MGSL_MODE_HDLC || info->netcount) + hdlc_mode(info); + else + async_mode(info); + + set_signals(info); + + info->dcd_chkcount = 0; + info->cts_chkcount = 0; + info->ri_chkcount = 0; + info->dsr_chkcount = 0; + + info->ie1_value |= (CDCD|CCTS); + write_reg(info, IE1, info->ie1_value); + + get_signals(info); + + if (info->netcount || (info->port.tty && info->port.tty->termios->c_cflag & CREAD) ) + rx_start(info); + + spin_unlock_irqrestore(&info->lock,flags); +} + +/* Reconfigure adapter based on new parameters + */ +static void change_params(SLMP_INFO *info) +{ + unsigned cflag; + int bits_per_char; + + if (!info->port.tty || !info->port.tty->termios) + return; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s change_params()\n", + __FILE__,__LINE__, info->device_name ); + + cflag = info->port.tty->termios->c_cflag; + + /* if B0 rate (hangup) specified then negate DTR and RTS */ + /* otherwise assert DTR and RTS */ + if (cflag & CBAUD) + info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; + else + info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + + /* byte size and parity */ + + switch (cflag & CSIZE) { + case CS5: info->params.data_bits = 5; break; + case CS6: info->params.data_bits = 6; break; + case CS7: info->params.data_bits = 7; break; + case CS8: info->params.data_bits = 8; break; + /* Never happens, but GCC is too dumb to figure it out */ + default: info->params.data_bits = 7; break; + } + + if (cflag & CSTOPB) + info->params.stop_bits = 2; + else + info->params.stop_bits = 1; + + info->params.parity = ASYNC_PARITY_NONE; + if (cflag & PARENB) { + if (cflag & PARODD) + info->params.parity = ASYNC_PARITY_ODD; + else + info->params.parity = ASYNC_PARITY_EVEN; +#ifdef CMSPAR + if (cflag & CMSPAR) + info->params.parity = ASYNC_PARITY_SPACE; +#endif + } + + /* calculate number of jiffies to transmit a full + * FIFO (32 bytes) at specified data rate + */ + bits_per_char = info->params.data_bits + + info->params.stop_bits + 1; + + /* if port data rate is set to 460800 or less then + * allow tty settings to override, otherwise keep the + * current data rate. + */ + if (info->params.data_rate <= 460800) { + info->params.data_rate = tty_get_baud_rate(info->port.tty); + } + + if ( info->params.data_rate ) { + info->timeout = (32*HZ*bits_per_char) / + info->params.data_rate; + } + info->timeout += HZ/50; /* Add .02 seconds of slop */ + + if (cflag & CRTSCTS) + info->port.flags |= ASYNC_CTS_FLOW; + else + info->port.flags &= ~ASYNC_CTS_FLOW; + + if (cflag & CLOCAL) + info->port.flags &= ~ASYNC_CHECK_CD; + else + info->port.flags |= ASYNC_CHECK_CD; + + /* process tty input control flags */ + + info->read_status_mask2 = OVRN; + if (I_INPCK(info->port.tty)) + info->read_status_mask2 |= PE | FRME; + if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty)) + info->read_status_mask1 |= BRKD; + if (I_IGNPAR(info->port.tty)) + info->ignore_status_mask2 |= PE | FRME; + if (I_IGNBRK(info->port.tty)) { + info->ignore_status_mask1 |= BRKD; + /* If ignoring parity and break indicators, ignore + * overruns too. (For real raw support). + */ + if (I_IGNPAR(info->port.tty)) + info->ignore_status_mask2 |= OVRN; + } + + program_hw(info); +} + +static int get_stats(SLMP_INFO * info, struct mgsl_icount __user *user_icount) +{ + int err; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s get_params()\n", + __FILE__,__LINE__, info->device_name); + + if (!user_icount) { + memset(&info->icount, 0, sizeof(info->icount)); + } else { + mutex_lock(&info->port.mutex); + COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount)); + mutex_unlock(&info->port.mutex); + if (err) + return -EFAULT; + } + + return 0; +} + +static int get_params(SLMP_INFO * info, MGSL_PARAMS __user *user_params) +{ + int err; + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s get_params()\n", + __FILE__,__LINE__, info->device_name); + + mutex_lock(&info->port.mutex); + COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS)); + mutex_unlock(&info->port.mutex); + if (err) { + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s get_params() user buffer copy failed\n", + __FILE__,__LINE__,info->device_name); + return -EFAULT; + } + + return 0; +} + +static int set_params(SLMP_INFO * info, MGSL_PARAMS __user *new_params) +{ + unsigned long flags; + MGSL_PARAMS tmp_params; + int err; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s set_params\n", + __FILE__,__LINE__,info->device_name ); + COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS)); + if (err) { + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s set_params() user buffer copy failed\n", + __FILE__,__LINE__,info->device_name); + return -EFAULT; + } + + mutex_lock(&info->port.mutex); + spin_lock_irqsave(&info->lock,flags); + memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); + spin_unlock_irqrestore(&info->lock,flags); + + change_params(info); + mutex_unlock(&info->port.mutex); + + return 0; +} + +static int get_txidle(SLMP_INFO * info, int __user *idle_mode) +{ + int err; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s get_txidle()=%d\n", + __FILE__,__LINE__, info->device_name, info->idle_mode); + + COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int)); + if (err) { + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s get_txidle() user buffer copy failed\n", + __FILE__,__LINE__,info->device_name); + return -EFAULT; + } + + return 0; +} + +static int set_txidle(SLMP_INFO * info, int idle_mode) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s set_txidle(%d)\n", + __FILE__,__LINE__,info->device_name, idle_mode ); + + spin_lock_irqsave(&info->lock,flags); + info->idle_mode = idle_mode; + tx_set_idle( info ); + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +static int tx_enable(SLMP_INFO * info, int enable) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s tx_enable(%d)\n", + __FILE__,__LINE__,info->device_name, enable); + + spin_lock_irqsave(&info->lock,flags); + if ( enable ) { + if ( !info->tx_enabled ) { + tx_start(info); + } + } else { + if ( info->tx_enabled ) + tx_stop(info); + } + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +/* abort send HDLC frame + */ +static int tx_abort(SLMP_INFO * info) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s tx_abort()\n", + __FILE__,__LINE__,info->device_name); + + spin_lock_irqsave(&info->lock,flags); + if ( info->tx_active && info->params.mode == MGSL_MODE_HDLC ) { + info->ie1_value &= ~UDRN; + info->ie1_value |= IDLE; + write_reg(info, IE1, info->ie1_value); /* disable tx status interrupts */ + write_reg(info, SR1, (unsigned char)(IDLE + UDRN)); /* clear pending */ + + write_reg(info, TXDMA + DSR, 0); /* disable DMA channel */ + write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ + + write_reg(info, CMD, TXABORT); + } + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +static int rx_enable(SLMP_INFO * info, int enable) +{ + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s rx_enable(%d)\n", + __FILE__,__LINE__,info->device_name,enable); + + spin_lock_irqsave(&info->lock,flags); + if ( enable ) { + if ( !info->rx_enabled ) + rx_start(info); + } else { + if ( info->rx_enabled ) + rx_stop(info); + } + spin_unlock_irqrestore(&info->lock,flags); + return 0; +} + +/* wait for specified event to occur + */ +static int wait_mgsl_event(SLMP_INFO * info, int __user *mask_ptr) +{ + unsigned long flags; + int s; + int rc=0; + struct mgsl_icount cprev, cnow; + int events; + int mask; + struct _input_signal_events oldsigs, newsigs; + DECLARE_WAITQUEUE(wait, current); + + COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int)); + if (rc) { + return -EFAULT; + } + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s wait_mgsl_event(%d)\n", + __FILE__,__LINE__,info->device_name,mask); + + spin_lock_irqsave(&info->lock,flags); + + /* return immediately if state matches requested events */ + get_signals(info); + s = info->serial_signals; + + events = mask & + ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + + ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + + ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + + ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); + if (events) { + spin_unlock_irqrestore(&info->lock,flags); + goto exit; + } + + /* save current irq counts */ + cprev = info->icount; + oldsigs = info->input_signal_events; + + /* enable hunt and idle irqs if needed */ + if (mask & (MgslEvent_ExitHuntMode+MgslEvent_IdleReceived)) { + unsigned char oldval = info->ie1_value; + unsigned char newval = oldval + + (mask & MgslEvent_ExitHuntMode ? FLGD:0) + + (mask & MgslEvent_IdleReceived ? IDLD:0); + if ( oldval != newval ) { + info->ie1_value = newval; + write_reg(info, IE1, info->ie1_value); + } + } + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&info->event_wait_q, &wait); + + spin_unlock_irqrestore(&info->lock,flags); + + for(;;) { + schedule(); + if (signal_pending(current)) { + rc = -ERESTARTSYS; + break; + } + + /* get current irq counts */ + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + newsigs = info->input_signal_events; + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->lock,flags); + + /* if no change, wait aborted for some reason */ + if (newsigs.dsr_up == oldsigs.dsr_up && + newsigs.dsr_down == oldsigs.dsr_down && + newsigs.dcd_up == oldsigs.dcd_up && + newsigs.dcd_down == oldsigs.dcd_down && + newsigs.cts_up == oldsigs.cts_up && + newsigs.cts_down == oldsigs.cts_down && + newsigs.ri_up == oldsigs.ri_up && + newsigs.ri_down == oldsigs.ri_down && + cnow.exithunt == cprev.exithunt && + cnow.rxidle == cprev.rxidle) { + rc = -EIO; + break; + } + + events = mask & + ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) + + (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) + + (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) + + (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) + + (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) + + (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) + + (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) + + (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) + + (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) + + (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) ); + if (events) + break; + + cprev = cnow; + oldsigs = newsigs; + } + + remove_wait_queue(&info->event_wait_q, &wait); + set_current_state(TASK_RUNNING); + + + if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) { + spin_lock_irqsave(&info->lock,flags); + if (!waitqueue_active(&info->event_wait_q)) { + /* disable enable exit hunt mode/idle rcvd IRQs */ + info->ie1_value &= ~(FLGD|IDLD); + write_reg(info, IE1, info->ie1_value); + } + spin_unlock_irqrestore(&info->lock,flags); + } +exit: + if ( rc == 0 ) + PUT_USER(rc, events, mask_ptr); + + return rc; +} + +static int modem_input_wait(SLMP_INFO *info,int arg) +{ + unsigned long flags; + int rc; + struct mgsl_icount cprev, cnow; + DECLARE_WAITQUEUE(wait, current); + + /* save current irq counts */ + spin_lock_irqsave(&info->lock,flags); + cprev = info->icount; + add_wait_queue(&info->status_event_wait_q, &wait); + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->lock,flags); + + for(;;) { + schedule(); + if (signal_pending(current)) { + rc = -ERESTARTSYS; + break; + } + + /* get new irq counts */ + spin_lock_irqsave(&info->lock,flags); + cnow = info->icount; + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&info->lock,flags); + + /* if no change, wait aborted for some reason */ + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { + rc = -EIO; + break; + } + + /* check for change in caller specified modem input */ + if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) || + (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) || + (arg & TIOCM_CD && cnow.dcd != cprev.dcd) || + (arg & TIOCM_CTS && cnow.cts != cprev.cts)) { + rc = 0; + break; + } + + cprev = cnow; + } + remove_wait_queue(&info->status_event_wait_q, &wait); + set_current_state(TASK_RUNNING); + return rc; +} + +/* return the state of the serial control and status signals + */ +static int tiocmget(struct tty_struct *tty) +{ + SLMP_INFO *info = tty->driver_data; + unsigned int result; + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + + result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) + + ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) + + ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) + + ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) + + ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) + + ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0); + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s tiocmget() value=%08X\n", + __FILE__,__LINE__, info->device_name, result ); + return result; +} + +/* set modem control signals (DTR/RTS) + */ +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + SLMP_INFO *info = tty->driver_data; + unsigned long flags; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s tiocmset(%x,%x)\n", + __FILE__,__LINE__,info->device_name, set, clear); + + if (set & TIOCM_RTS) + info->serial_signals |= SerialSignal_RTS; + if (set & TIOCM_DTR) + info->serial_signals |= SerialSignal_DTR; + if (clear & TIOCM_RTS) + info->serial_signals &= ~SerialSignal_RTS; + if (clear & TIOCM_DTR) + info->serial_signals &= ~SerialSignal_DTR; + + spin_lock_irqsave(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + + return 0; +} + +static int carrier_raised(struct tty_port *port) +{ + SLMP_INFO *info = container_of(port, SLMP_INFO, port); + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + + return (info->serial_signals & SerialSignal_DCD) ? 1 : 0; +} + +static void dtr_rts(struct tty_port *port, int on) +{ + SLMP_INFO *info = container_of(port, SLMP_INFO, port); + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + if (on) + info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; + else + info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); + set_signals(info); + spin_unlock_irqrestore(&info->lock,flags); +} + +/* Block the current process until the specified port is ready to open. + */ +static int block_til_ready(struct tty_struct *tty, struct file *filp, + SLMP_INFO *info) +{ + DECLARE_WAITQUEUE(wait, current); + int retval; + bool do_clocal = false; + bool extra_count = false; + unsigned long flags; + int cd; + struct tty_port *port = &info->port; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s block_til_ready()\n", + __FILE__,__LINE__, tty->driver->name ); + + if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ + /* nonblock mode is set or port is not enabled */ + /* just verify that callout device is not active */ + port->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + if (tty->termios->c_cflag & CLOCAL) + do_clocal = true; + + /* Wait for carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, port->count is dropped by one, so that + * close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + + retval = 0; + add_wait_queue(&port->open_wait, &wait); + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s block_til_ready() before block, count=%d\n", + __FILE__,__LINE__, tty->driver->name, port->count ); + + spin_lock_irqsave(&info->lock, flags); + if (!tty_hung_up_p(filp)) { + extra_count = true; + port->count--; + } + spin_unlock_irqrestore(&info->lock, flags); + port->blocked_open++; + + while (1) { + if (tty->termios->c_cflag & CBAUD) + tty_port_raise_dtr_rts(port); + + set_current_state(TASK_INTERRUPTIBLE); + + if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)){ + retval = (port->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS; + break; + } + + cd = tty_port_carrier_raised(port); + + if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd)) + break; + + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s block_til_ready() count=%d\n", + __FILE__,__LINE__, tty->driver->name, port->count ); + + tty_unlock(); + schedule(); + tty_lock(); + } + + set_current_state(TASK_RUNNING); + remove_wait_queue(&port->open_wait, &wait); + + if (extra_count) + port->count++; + port->blocked_open--; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):%s block_til_ready() after, count=%d\n", + __FILE__,__LINE__, tty->driver->name, port->count ); + + if (!retval) + port->flags |= ASYNC_NORMAL_ACTIVE; + + return retval; +} + +static int alloc_dma_bufs(SLMP_INFO *info) +{ + unsigned short BuffersPerFrame; + unsigned short BufferCount; + + // Force allocation to start at 64K boundary for each port. + // This is necessary because *all* buffer descriptors for a port + // *must* be in the same 64K block. All descriptors on a port + // share a common 'base' address (upper 8 bits of 24 bits) programmed + // into the CBP register. + info->port_array[0]->last_mem_alloc = (SCA_MEM_SIZE/4) * info->port_num; + + /* Calculate the number of DMA buffers necessary to hold the */ + /* largest allowable frame size. Note: If the max frame size is */ + /* not an even multiple of the DMA buffer size then we need to */ + /* round the buffer count per frame up one. */ + + BuffersPerFrame = (unsigned short)(info->max_frame_size/SCABUFSIZE); + if ( info->max_frame_size % SCABUFSIZE ) + BuffersPerFrame++; + + /* calculate total number of data buffers (SCABUFSIZE) possible + * in one ports memory (SCA_MEM_SIZE/4) after allocating memory + * for the descriptor list (BUFFERLISTSIZE). + */ + BufferCount = (SCA_MEM_SIZE/4 - BUFFERLISTSIZE)/SCABUFSIZE; + + /* limit number of buffers to maximum amount of descriptors */ + if (BufferCount > BUFFERLISTSIZE/sizeof(SCADESC)) + BufferCount = BUFFERLISTSIZE/sizeof(SCADESC); + + /* use enough buffers to transmit one max size frame */ + info->tx_buf_count = BuffersPerFrame + 1; + + /* never use more than half the available buffers for transmit */ + if (info->tx_buf_count > (BufferCount/2)) + info->tx_buf_count = BufferCount/2; + + if (info->tx_buf_count > SCAMAXDESC) + info->tx_buf_count = SCAMAXDESC; + + /* use remaining buffers for receive */ + info->rx_buf_count = BufferCount - info->tx_buf_count; + + if (info->rx_buf_count > SCAMAXDESC) + info->rx_buf_count = SCAMAXDESC; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk("%s(%d):%s Allocating %d TX and %d RX DMA buffers.\n", + __FILE__,__LINE__, info->device_name, + info->tx_buf_count,info->rx_buf_count); + + if ( alloc_buf_list( info ) < 0 || + alloc_frame_bufs(info, + info->rx_buf_list, + info->rx_buf_list_ex, + info->rx_buf_count) < 0 || + alloc_frame_bufs(info, + info->tx_buf_list, + info->tx_buf_list_ex, + info->tx_buf_count) < 0 || + alloc_tmp_rx_buf(info) < 0 ) { + printk("%s(%d):%s Can't allocate DMA buffer memory\n", + __FILE__,__LINE__, info->device_name); + return -ENOMEM; + } + + rx_reset_buffers( info ); + + return 0; +} + +/* Allocate DMA buffers for the transmit and receive descriptor lists. + */ +static int alloc_buf_list(SLMP_INFO *info) +{ + unsigned int i; + + /* build list in adapter shared memory */ + info->buffer_list = info->memory_base + info->port_array[0]->last_mem_alloc; + info->buffer_list_phys = info->port_array[0]->last_mem_alloc; + info->port_array[0]->last_mem_alloc += BUFFERLISTSIZE; + + memset(info->buffer_list, 0, BUFFERLISTSIZE); + + /* Save virtual address pointers to the receive and */ + /* transmit buffer lists. (Receive 1st). These pointers will */ + /* be used by the processor to access the lists. */ + info->rx_buf_list = (SCADESC *)info->buffer_list; + + info->tx_buf_list = (SCADESC *)info->buffer_list; + info->tx_buf_list += info->rx_buf_count; + + /* Build links for circular buffer entry lists (tx and rx) + * + * Note: links are physical addresses read by the SCA device + * to determine the next buffer entry to use. + */ + + for ( i = 0; i < info->rx_buf_count; i++ ) { + /* calculate and store physical address of this buffer entry */ + info->rx_buf_list_ex[i].phys_entry = + info->buffer_list_phys + (i * sizeof(SCABUFSIZE)); + + /* calculate and store physical address of */ + /* next entry in cirular list of entries */ + info->rx_buf_list[i].next = info->buffer_list_phys; + if ( i < info->rx_buf_count - 1 ) + info->rx_buf_list[i].next += (i + 1) * sizeof(SCADESC); + + info->rx_buf_list[i].length = SCABUFSIZE; + } + + for ( i = 0; i < info->tx_buf_count; i++ ) { + /* calculate and store physical address of this buffer entry */ + info->tx_buf_list_ex[i].phys_entry = info->buffer_list_phys + + ((info->rx_buf_count + i) * sizeof(SCADESC)); + + /* calculate and store physical address of */ + /* next entry in cirular list of entries */ + + info->tx_buf_list[i].next = info->buffer_list_phys + + info->rx_buf_count * sizeof(SCADESC); + + if ( i < info->tx_buf_count - 1 ) + info->tx_buf_list[i].next += (i + 1) * sizeof(SCADESC); + } + + return 0; +} + +/* Allocate the frame DMA buffers used by the specified buffer list. + */ +static int alloc_frame_bufs(SLMP_INFO *info, SCADESC *buf_list,SCADESC_EX *buf_list_ex,int count) +{ + int i; + unsigned long phys_addr; + + for ( i = 0; i < count; i++ ) { + buf_list_ex[i].virt_addr = info->memory_base + info->port_array[0]->last_mem_alloc; + phys_addr = info->port_array[0]->last_mem_alloc; + info->port_array[0]->last_mem_alloc += SCABUFSIZE; + + buf_list[i].buf_ptr = (unsigned short)phys_addr; + buf_list[i].buf_base = (unsigned char)(phys_addr >> 16); + } + + return 0; +} + +static void free_dma_bufs(SLMP_INFO *info) +{ + info->buffer_list = NULL; + info->rx_buf_list = NULL; + info->tx_buf_list = NULL; +} + +/* allocate buffer large enough to hold max_frame_size. + * This buffer is used to pass an assembled frame to the line discipline. + */ +static int alloc_tmp_rx_buf(SLMP_INFO *info) +{ + info->tmp_rx_buf = kmalloc(info->max_frame_size, GFP_KERNEL); + if (info->tmp_rx_buf == NULL) + return -ENOMEM; + return 0; +} + +static void free_tmp_rx_buf(SLMP_INFO *info) +{ + kfree(info->tmp_rx_buf); + info->tmp_rx_buf = NULL; +} + +static int claim_resources(SLMP_INFO *info) +{ + if (request_mem_region(info->phys_memory_base,SCA_MEM_SIZE,"synclinkmp") == NULL) { + printk( "%s(%d):%s mem addr conflict, Addr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_memory_base); + info->init_error = DiagStatus_AddressConflict; + goto errout; + } + else + info->shared_mem_requested = true; + + if (request_mem_region(info->phys_lcr_base + info->lcr_offset,128,"synclinkmp") == NULL) { + printk( "%s(%d):%s lcr mem addr conflict, Addr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_lcr_base); + info->init_error = DiagStatus_AddressConflict; + goto errout; + } + else + info->lcr_mem_requested = true; + + if (request_mem_region(info->phys_sca_base + info->sca_offset,SCA_BASE_SIZE,"synclinkmp") == NULL) { + printk( "%s(%d):%s sca mem addr conflict, Addr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_sca_base); + info->init_error = DiagStatus_AddressConflict; + goto errout; + } + else + info->sca_base_requested = true; + + if (request_mem_region(info->phys_statctrl_base + info->statctrl_offset,SCA_REG_SIZE,"synclinkmp") == NULL) { + printk( "%s(%d):%s stat/ctrl mem addr conflict, Addr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_statctrl_base); + info->init_error = DiagStatus_AddressConflict; + goto errout; + } + else + info->sca_statctrl_requested = true; + + info->memory_base = ioremap_nocache(info->phys_memory_base, + SCA_MEM_SIZE); + if (!info->memory_base) { + printk( "%s(%d):%s Cant map shared memory, MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_memory_base ); + info->init_error = DiagStatus_CantAssignPciResources; + goto errout; + } + + info->lcr_base = ioremap_nocache(info->phys_lcr_base, PAGE_SIZE); + if (!info->lcr_base) { + printk( "%s(%d):%s Cant map LCR memory, MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_lcr_base ); + info->init_error = DiagStatus_CantAssignPciResources; + goto errout; + } + info->lcr_base += info->lcr_offset; + + info->sca_base = ioremap_nocache(info->phys_sca_base, PAGE_SIZE); + if (!info->sca_base) { + printk( "%s(%d):%s Cant map SCA memory, MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_sca_base ); + info->init_error = DiagStatus_CantAssignPciResources; + goto errout; + } + info->sca_base += info->sca_offset; + + info->statctrl_base = ioremap_nocache(info->phys_statctrl_base, + PAGE_SIZE); + if (!info->statctrl_base) { + printk( "%s(%d):%s Cant map SCA Status/Control memory, MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_statctrl_base ); + info->init_error = DiagStatus_CantAssignPciResources; + goto errout; + } + info->statctrl_base += info->statctrl_offset; + + if ( !memory_test(info) ) { + printk( "%s(%d):Shared Memory Test failed for device %s MemAddr=%08X\n", + __FILE__,__LINE__,info->device_name, info->phys_memory_base ); + info->init_error = DiagStatus_MemoryError; + goto errout; + } + + return 0; + +errout: + release_resources( info ); + return -ENODEV; +} + +static void release_resources(SLMP_INFO *info) +{ + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s release_resources() entry\n", + __FILE__,__LINE__,info->device_name ); + + if ( info->irq_requested ) { + free_irq(info->irq_level, info); + info->irq_requested = false; + } + + if ( info->shared_mem_requested ) { + release_mem_region(info->phys_memory_base,SCA_MEM_SIZE); + info->shared_mem_requested = false; + } + if ( info->lcr_mem_requested ) { + release_mem_region(info->phys_lcr_base + info->lcr_offset,128); + info->lcr_mem_requested = false; + } + if ( info->sca_base_requested ) { + release_mem_region(info->phys_sca_base + info->sca_offset,SCA_BASE_SIZE); + info->sca_base_requested = false; + } + if ( info->sca_statctrl_requested ) { + release_mem_region(info->phys_statctrl_base + info->statctrl_offset,SCA_REG_SIZE); + info->sca_statctrl_requested = false; + } + + if (info->memory_base){ + iounmap(info->memory_base); + info->memory_base = NULL; + } + + if (info->sca_base) { + iounmap(info->sca_base - info->sca_offset); + info->sca_base=NULL; + } + + if (info->statctrl_base) { + iounmap(info->statctrl_base - info->statctrl_offset); + info->statctrl_base=NULL; + } + + if (info->lcr_base){ + iounmap(info->lcr_base - info->lcr_offset); + info->lcr_base = NULL; + } + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s release_resources() exit\n", + __FILE__,__LINE__,info->device_name ); +} + +/* Add the specified device instance data structure to the + * global linked list of devices and increment the device count. + */ +static void add_device(SLMP_INFO *info) +{ + info->next_device = NULL; + info->line = synclinkmp_device_count; + sprintf(info->device_name,"ttySLM%dp%d",info->adapter_num,info->port_num); + + if (info->line < MAX_DEVICES) { + if (maxframe[info->line]) + info->max_frame_size = maxframe[info->line]; + } + + synclinkmp_device_count++; + + if ( !synclinkmp_device_list ) + synclinkmp_device_list = info; + else { + SLMP_INFO *current_dev = synclinkmp_device_list; + while( current_dev->next_device ) + current_dev = current_dev->next_device; + current_dev->next_device = info; + } + + if ( info->max_frame_size < 4096 ) + info->max_frame_size = 4096; + else if ( info->max_frame_size > 65535 ) + info->max_frame_size = 65535; + + printk( "SyncLink MultiPort %s: " + "Mem=(%08x %08X %08x %08X) IRQ=%d MaxFrameSize=%u\n", + info->device_name, + info->phys_sca_base, + info->phys_memory_base, + info->phys_statctrl_base, + info->phys_lcr_base, + info->irq_level, + info->max_frame_size ); + +#if SYNCLINK_GENERIC_HDLC + hdlcdev_init(info); +#endif +} + +static const struct tty_port_operations port_ops = { + .carrier_raised = carrier_raised, + .dtr_rts = dtr_rts, +}; + +/* Allocate and initialize a device instance structure + * + * Return Value: pointer to SLMP_INFO if success, otherwise NULL + */ +static SLMP_INFO *alloc_dev(int adapter_num, int port_num, struct pci_dev *pdev) +{ + SLMP_INFO *info; + + info = kzalloc(sizeof(SLMP_INFO), + GFP_KERNEL); + + if (!info) { + printk("%s(%d) Error can't allocate device instance data for adapter %d, port %d\n", + __FILE__,__LINE__, adapter_num, port_num); + } else { + tty_port_init(&info->port); + info->port.ops = &port_ops; + info->magic = MGSL_MAGIC; + INIT_WORK(&info->task, bh_handler); + info->max_frame_size = 4096; + info->port.close_delay = 5*HZ/10; + info->port.closing_wait = 30*HZ; + init_waitqueue_head(&info->status_event_wait_q); + init_waitqueue_head(&info->event_wait_q); + spin_lock_init(&info->netlock); + memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); + info->idle_mode = HDLC_TXIDLE_FLAGS; + info->adapter_num = adapter_num; + info->port_num = port_num; + + /* Copy configuration info to device instance data */ + info->irq_level = pdev->irq; + info->phys_lcr_base = pci_resource_start(pdev,0); + info->phys_sca_base = pci_resource_start(pdev,2); + info->phys_memory_base = pci_resource_start(pdev,3); + info->phys_statctrl_base = pci_resource_start(pdev,4); + + /* Because veremap only works on page boundaries we must map + * a larger area than is actually implemented for the LCR + * memory range. We map a full page starting at the page boundary. + */ + info->lcr_offset = info->phys_lcr_base & (PAGE_SIZE-1); + info->phys_lcr_base &= ~(PAGE_SIZE-1); + + info->sca_offset = info->phys_sca_base & (PAGE_SIZE-1); + info->phys_sca_base &= ~(PAGE_SIZE-1); + + info->statctrl_offset = info->phys_statctrl_base & (PAGE_SIZE-1); + info->phys_statctrl_base &= ~(PAGE_SIZE-1); + + info->bus_type = MGSL_BUS_TYPE_PCI; + info->irq_flags = IRQF_SHARED; + + setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info); + setup_timer(&info->status_timer, status_timeout, + (unsigned long)info); + + /* Store the PCI9050 misc control register value because a flaw + * in the PCI9050 prevents LCR registers from being read if + * BIOS assigns an LCR base address with bit 7 set. + * + * Only the misc control register is accessed for which only + * write access is needed, so set an initial value and change + * bits to the device instance data as we write the value + * to the actual misc control register. + */ + info->misc_ctrl_value = 0x087e4546; + + /* initial port state is unknown - if startup errors + * occur, init_error will be set to indicate the + * problem. Once the port is fully initialized, + * this value will be set to 0 to indicate the + * port is available. + */ + info->init_error = -1; + } + + return info; +} + +static void device_init(int adapter_num, struct pci_dev *pdev) +{ + SLMP_INFO *port_array[SCA_MAX_PORTS]; + int port; + + /* allocate device instances for up to SCA_MAX_PORTS devices */ + for ( port = 0; port < SCA_MAX_PORTS; ++port ) { + port_array[port] = alloc_dev(adapter_num,port,pdev); + if( port_array[port] == NULL ) { + for ( --port; port >= 0; --port ) + kfree(port_array[port]); + return; + } + } + + /* give copy of port_array to all ports and add to device list */ + for ( port = 0; port < SCA_MAX_PORTS; ++port ) { + memcpy(port_array[port]->port_array,port_array,sizeof(port_array)); + add_device( port_array[port] ); + spin_lock_init(&port_array[port]->lock); + } + + /* Allocate and claim adapter resources */ + if ( !claim_resources(port_array[0]) ) { + + alloc_dma_bufs(port_array[0]); + + /* copy resource information from first port to others */ + for ( port = 1; port < SCA_MAX_PORTS; ++port ) { + port_array[port]->lock = port_array[0]->lock; + port_array[port]->irq_level = port_array[0]->irq_level; + port_array[port]->memory_base = port_array[0]->memory_base; + port_array[port]->sca_base = port_array[0]->sca_base; + port_array[port]->statctrl_base = port_array[0]->statctrl_base; + port_array[port]->lcr_base = port_array[0]->lcr_base; + alloc_dma_bufs(port_array[port]); + } + + if ( request_irq(port_array[0]->irq_level, + synclinkmp_interrupt, + port_array[0]->irq_flags, + port_array[0]->device_name, + port_array[0]) < 0 ) { + printk( "%s(%d):%s Cant request interrupt, IRQ=%d\n", + __FILE__,__LINE__, + port_array[0]->device_name, + port_array[0]->irq_level ); + } + else { + port_array[0]->irq_requested = true; + adapter_test(port_array[0]); + } + } +} + +static const struct tty_operations ops = { + .open = open, + .close = close, + .write = write, + .put_char = put_char, + .flush_chars = flush_chars, + .write_room = write_room, + .chars_in_buffer = chars_in_buffer, + .flush_buffer = flush_buffer, + .ioctl = ioctl, + .throttle = throttle, + .unthrottle = unthrottle, + .send_xchar = send_xchar, + .break_ctl = set_break, + .wait_until_sent = wait_until_sent, + .set_termios = set_termios, + .stop = tx_hold, + .start = tx_release, + .hangup = hangup, + .tiocmget = tiocmget, + .tiocmset = tiocmset, + .get_icount = get_icount, + .proc_fops = &synclinkmp_proc_fops, +}; + + +static void synclinkmp_cleanup(void) +{ + int rc; + SLMP_INFO *info; + SLMP_INFO *tmp; + + printk("Unloading %s %s\n", driver_name, driver_version); + + if (serial_driver) { + if ((rc = tty_unregister_driver(serial_driver))) + printk("%s(%d) failed to unregister tty driver err=%d\n", + __FILE__,__LINE__,rc); + put_tty_driver(serial_driver); + } + + /* reset devices */ + info = synclinkmp_device_list; + while(info) { + reset_port(info); + info = info->next_device; + } + + /* release devices */ + info = synclinkmp_device_list; + while(info) { +#if SYNCLINK_GENERIC_HDLC + hdlcdev_exit(info); +#endif + free_dma_bufs(info); + free_tmp_rx_buf(info); + if ( info->port_num == 0 ) { + if (info->sca_base) + write_reg(info, LPR, 1); /* set low power mode */ + release_resources(info); + } + tmp = info; + info = info->next_device; + kfree(tmp); + } + + pci_unregister_driver(&synclinkmp_pci_driver); +} + +/* Driver initialization entry point. + */ + +static int __init synclinkmp_init(void) +{ + int rc; + + if (break_on_load) { + synclinkmp_get_text_ptr(); + BREAKPOINT(); + } + + printk("%s %s\n", driver_name, driver_version); + + if ((rc = pci_register_driver(&synclinkmp_pci_driver)) < 0) { + printk("%s:failed to register PCI driver, error=%d\n",__FILE__,rc); + return rc; + } + + serial_driver = alloc_tty_driver(128); + if (!serial_driver) { + rc = -ENOMEM; + goto error; + } + + /* Initialize the tty_driver structure */ + + serial_driver->owner = THIS_MODULE; + serial_driver->driver_name = "synclinkmp"; + serial_driver->name = "ttySLM"; + serial_driver->major = ttymajor; + serial_driver->minor_start = 64; + serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + serial_driver->subtype = SERIAL_TYPE_NORMAL; + serial_driver->init_termios = tty_std_termios; + serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + serial_driver->init_termios.c_ispeed = 9600; + serial_driver->init_termios.c_ospeed = 9600; + serial_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(serial_driver, &ops); + if ((rc = tty_register_driver(serial_driver)) < 0) { + printk("%s(%d):Couldn't register serial driver\n", + __FILE__,__LINE__); + put_tty_driver(serial_driver); + serial_driver = NULL; + goto error; + } + + printk("%s %s, tty major#%d\n", + driver_name, driver_version, + serial_driver->major); + + return 0; + +error: + synclinkmp_cleanup(); + return rc; +} + +static void __exit synclinkmp_exit(void) +{ + synclinkmp_cleanup(); +} + +module_init(synclinkmp_init); +module_exit(synclinkmp_exit); + +/* Set the port for internal loopback mode. + * The TxCLK and RxCLK signals are generated from the BRG and + * the TxD is looped back to the RxD internally. + */ +static void enable_loopback(SLMP_INFO *info, int enable) +{ + if (enable) { + /* MD2 (Mode Register 2) + * 01..00 CNCT<1..0> Channel Connection 11=Local Loopback + */ + write_reg(info, MD2, (unsigned char)(read_reg(info, MD2) | (BIT1 + BIT0))); + + /* degate external TxC clock source */ + info->port_array[0]->ctrlreg_value |= (BIT0 << (info->port_num * 2)); + write_control_reg(info); + + /* RXS/TXS (Rx/Tx clock source) + * 07 Reserved, must be 0 + * 06..04 Clock Source, 100=BRG + * 03..00 Clock Divisor, 0000=1 + */ + write_reg(info, RXS, 0x40); + write_reg(info, TXS, 0x40); + + } else { + /* MD2 (Mode Register 2) + * 01..00 CNCT<1..0> Channel connection, 0=normal + */ + write_reg(info, MD2, (unsigned char)(read_reg(info, MD2) & ~(BIT1 + BIT0))); + + /* RXS/TXS (Rx/Tx clock source) + * 07 Reserved, must be 0 + * 06..04 Clock Source, 000=RxC/TxC Pin + * 03..00 Clock Divisor, 0000=1 + */ + write_reg(info, RXS, 0x00); + write_reg(info, TXS, 0x00); + } + + /* set LinkSpeed if available, otherwise default to 2Mbps */ + if (info->params.clock_speed) + set_rate(info, info->params.clock_speed); + else + set_rate(info, 3686400); +} + +/* Set the baud rate register to the desired speed + * + * data_rate data rate of clock in bits per second + * A data rate of 0 disables the AUX clock. + */ +static void set_rate( SLMP_INFO *info, u32 data_rate ) +{ + u32 TMCValue; + unsigned char BRValue; + u32 Divisor=0; + + /* fBRG = fCLK/(TMC * 2^BR) + */ + if (data_rate != 0) { + Divisor = 14745600/data_rate; + if (!Divisor) + Divisor = 1; + + TMCValue = Divisor; + + BRValue = 0; + if (TMCValue != 1 && TMCValue != 2) { + /* BRValue of 0 provides 50/50 duty cycle *only* when + * TMCValue is 1 or 2. BRValue of 1 to 9 always provides + * 50/50 duty cycle. + */ + BRValue = 1; + TMCValue >>= 1; + } + + /* while TMCValue is too big for TMC register, divide + * by 2 and increment BR exponent. + */ + for(; TMCValue > 256 && BRValue < 10; BRValue++) + TMCValue >>= 1; + + write_reg(info, TXS, + (unsigned char)((read_reg(info, TXS) & 0xf0) | BRValue)); + write_reg(info, RXS, + (unsigned char)((read_reg(info, RXS) & 0xf0) | BRValue)); + write_reg(info, TMC, (unsigned char)TMCValue); + } + else { + write_reg(info, TXS,0); + write_reg(info, RXS,0); + write_reg(info, TMC, 0); + } +} + +/* Disable receiver + */ +static void rx_stop(SLMP_INFO *info) +{ + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):%s rx_stop()\n", + __FILE__,__LINE__, info->device_name ); + + write_reg(info, CMD, RXRESET); + + info->ie0_value &= ~RXRDYE; + write_reg(info, IE0, info->ie0_value); /* disable Rx data interrupts */ + + write_reg(info, RXDMA + DSR, 0); /* disable Rx DMA */ + write_reg(info, RXDMA + DCMD, SWABORT); /* reset/init Rx DMA */ + write_reg(info, RXDMA + DIR, 0); /* disable Rx DMA interrupts */ + + info->rx_enabled = false; + info->rx_overflow = false; +} + +/* enable the receiver + */ +static void rx_start(SLMP_INFO *info) +{ + int i; + + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):%s rx_start()\n", + __FILE__,__LINE__, info->device_name ); + + write_reg(info, CMD, RXRESET); + + if ( info->params.mode == MGSL_MODE_HDLC ) { + /* HDLC, disabe IRQ on rxdata */ + info->ie0_value &= ~RXRDYE; + write_reg(info, IE0, info->ie0_value); + + /* Reset all Rx DMA buffers and program rx dma */ + write_reg(info, RXDMA + DSR, 0); /* disable Rx DMA */ + write_reg(info, RXDMA + DCMD, SWABORT); /* reset/init Rx DMA */ + + for (i = 0; i < info->rx_buf_count; i++) { + info->rx_buf_list[i].status = 0xff; + + // throttle to 4 shared memory writes at a time to prevent + // hogging local bus (keep latency time for DMA requests low). + if (!(i % 4)) + read_status_reg(info); + } + info->current_rx_buf = 0; + + /* set current/1st descriptor address */ + write_reg16(info, RXDMA + CDA, + info->rx_buf_list_ex[0].phys_entry); + + /* set new last rx descriptor address */ + write_reg16(info, RXDMA + EDA, + info->rx_buf_list_ex[info->rx_buf_count - 1].phys_entry); + + /* set buffer length (shared by all rx dma data buffers) */ + write_reg16(info, RXDMA + BFL, SCABUFSIZE); + + write_reg(info, RXDMA + DIR, 0x60); /* enable Rx DMA interrupts (EOM/BOF) */ + write_reg(info, RXDMA + DSR, 0xf2); /* clear Rx DMA IRQs, enable Rx DMA */ + } else { + /* async, enable IRQ on rxdata */ + info->ie0_value |= RXRDYE; + write_reg(info, IE0, info->ie0_value); + } + + write_reg(info, CMD, RXENABLE); + + info->rx_overflow = false; + info->rx_enabled = true; +} + +/* Enable the transmitter and send a transmit frame if + * one is loaded in the DMA buffers. + */ +static void tx_start(SLMP_INFO *info) +{ + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):%s tx_start() tx_count=%d\n", + __FILE__,__LINE__, info->device_name,info->tx_count ); + + if (!info->tx_enabled ) { + write_reg(info, CMD, TXRESET); + write_reg(info, CMD, TXENABLE); + info->tx_enabled = true; + } + + if ( info->tx_count ) { + + /* If auto RTS enabled and RTS is inactive, then assert */ + /* RTS and set a flag indicating that the driver should */ + /* negate RTS when the transmission completes. */ + + info->drop_rts_on_tx_done = false; + + if (info->params.mode != MGSL_MODE_ASYNC) { + + if ( info->params.flags & HDLC_FLAG_AUTO_RTS ) { + get_signals( info ); + if ( !(info->serial_signals & SerialSignal_RTS) ) { + info->serial_signals |= SerialSignal_RTS; + set_signals( info ); + info->drop_rts_on_tx_done = true; + } + } + + write_reg16(info, TRC0, + (unsigned short)(((tx_negate_fifo_level-1)<<8) + tx_active_fifo_level)); + + write_reg(info, TXDMA + DSR, 0); /* disable DMA channel */ + write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ + + /* set TX CDA (current descriptor address) */ + write_reg16(info, TXDMA + CDA, + info->tx_buf_list_ex[0].phys_entry); + + /* set TX EDA (last descriptor address) */ + write_reg16(info, TXDMA + EDA, + info->tx_buf_list_ex[info->last_tx_buf].phys_entry); + + /* enable underrun IRQ */ + info->ie1_value &= ~IDLE; + info->ie1_value |= UDRN; + write_reg(info, IE1, info->ie1_value); + write_reg(info, SR1, (unsigned char)(IDLE + UDRN)); + + write_reg(info, TXDMA + DIR, 0x40); /* enable Tx DMA interrupts (EOM) */ + write_reg(info, TXDMA + DSR, 0xf2); /* clear Tx DMA IRQs, enable Tx DMA */ + + mod_timer(&info->tx_timer, jiffies + + msecs_to_jiffies(5000)); + } + else { + tx_load_fifo(info); + /* async, enable IRQ on txdata */ + info->ie0_value |= TXRDYE; + write_reg(info, IE0, info->ie0_value); + } + + info->tx_active = true; + } +} + +/* stop the transmitter and DMA + */ +static void tx_stop( SLMP_INFO *info ) +{ + if (debug_level >= DEBUG_LEVEL_ISR) + printk("%s(%d):%s tx_stop()\n", + __FILE__,__LINE__, info->device_name ); + + del_timer(&info->tx_timer); + + write_reg(info, TXDMA + DSR, 0); /* disable DMA channel */ + write_reg(info, TXDMA + DCMD, SWABORT); /* reset/init DMA channel */ + + write_reg(info, CMD, TXRESET); + + info->ie1_value &= ~(UDRN + IDLE); + write_reg(info, IE1, info->ie1_value); /* disable tx status interrupts */ + write_reg(info, SR1, (unsigned char)(IDLE + UDRN)); /* clear pending */ + + info->ie0_value &= ~TXRDYE; + write_reg(info, IE0, info->ie0_value); /* disable tx data interrupts */ + + info->tx_enabled = false; + info->tx_active = false; +} + +/* Fill the transmit FIFO until the FIFO is full or + * there is no more data to load. + */ +static void tx_load_fifo(SLMP_INFO *info) +{ + u8 TwoBytes[2]; + + /* do nothing is now tx data available and no XON/XOFF pending */ + + if ( !info->tx_count && !info->x_char ) + return; + + /* load the Transmit FIFO until FIFOs full or all data sent */ + + while( info->tx_count && (read_reg(info,SR0) & BIT1) ) { + + /* there is more space in the transmit FIFO and */ + /* there is more data in transmit buffer */ + + if ( (info->tx_count > 1) && !info->x_char ) { + /* write 16-bits */ + TwoBytes[0] = info->tx_buf[info->tx_get++]; + if (info->tx_get >= info->max_frame_size) + info->tx_get -= info->max_frame_size; + TwoBytes[1] = info->tx_buf[info->tx_get++]; + if (info->tx_get >= info->max_frame_size) + info->tx_get -= info->max_frame_size; + + write_reg16(info, TRB, *((u16 *)TwoBytes)); + + info->tx_count -= 2; + info->icount.tx += 2; + } else { + /* only 1 byte left to transmit or 1 FIFO slot left */ + + if (info->x_char) { + /* transmit pending high priority char */ + write_reg(info, TRB, info->x_char); + info->x_char = 0; + } else { + write_reg(info, TRB, info->tx_buf[info->tx_get++]); + if (info->tx_get >= info->max_frame_size) + info->tx_get -= info->max_frame_size; + info->tx_count--; + } + info->icount.tx++; + } + } +} + +/* Reset a port to a known state + */ +static void reset_port(SLMP_INFO *info) +{ + if (info->sca_base) { + + tx_stop(info); + rx_stop(info); + + info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); + set_signals(info); + + /* disable all port interrupts */ + info->ie0_value = 0; + info->ie1_value = 0; + info->ie2_value = 0; + write_reg(info, IE0, info->ie0_value); + write_reg(info, IE1, info->ie1_value); + write_reg(info, IE2, info->ie2_value); + + write_reg(info, CMD, CHRESET); + } +} + +/* Reset all the ports to a known state. + */ +static void reset_adapter(SLMP_INFO *info) +{ + int i; + + for ( i=0; i < SCA_MAX_PORTS; ++i) { + if (info->port_array[i]) + reset_port(info->port_array[i]); + } +} + +/* Program port for asynchronous communications. + */ +static void async_mode(SLMP_INFO *info) +{ + + unsigned char RegValue; + + tx_stop(info); + rx_stop(info); + + /* MD0, Mode Register 0 + * + * 07..05 PRCTL<2..0>, Protocol Mode, 000=async + * 04 AUTO, Auto-enable (RTS/CTS/DCD) + * 03 Reserved, must be 0 + * 02 CRCCC, CRC Calculation, 0=disabled + * 01..00 STOP<1..0> Stop bits (00=1,10=2) + * + * 0000 0000 + */ + RegValue = 0x00; + if (info->params.stop_bits != 1) + RegValue |= BIT1; + write_reg(info, MD0, RegValue); + + /* MD1, Mode Register 1 + * + * 07..06 BRATE<1..0>, bit rate, 00=1/1 01=1/16 10=1/32 11=1/64 + * 05..04 TXCHR<1..0>, tx char size, 00=8 bits,01=7,10=6,11=5 + * 03..02 RXCHR<1..0>, rx char size + * 01..00 PMPM<1..0>, Parity mode, 00=none 10=even 11=odd + * + * 0100 0000 + */ + RegValue = 0x40; + switch (info->params.data_bits) { + case 7: RegValue |= BIT4 + BIT2; break; + case 6: RegValue |= BIT5 + BIT3; break; + case 5: RegValue |= BIT5 + BIT4 + BIT3 + BIT2; break; + } + if (info->params.parity != ASYNC_PARITY_NONE) { + RegValue |= BIT1; + if (info->params.parity == ASYNC_PARITY_ODD) + RegValue |= BIT0; + } + write_reg(info, MD1, RegValue); + + /* MD2, Mode Register 2 + * + * 07..02 Reserved, must be 0 + * 01..00 CNCT<1..0> Channel connection, 00=normal 11=local loopback + * + * 0000 0000 + */ + RegValue = 0x00; + if (info->params.loopback) + RegValue |= (BIT1 + BIT0); + write_reg(info, MD2, RegValue); + + /* RXS, Receive clock source + * + * 07 Reserved, must be 0 + * 06..04 RXCS<2..0>, clock source, 000=RxC Pin, 100=BRG, 110=DPLL + * 03..00 RXBR<3..0>, rate divisor, 0000=1 + */ + RegValue=BIT6; + write_reg(info, RXS, RegValue); + + /* TXS, Transmit clock source + * + * 07 Reserved, must be 0 + * 06..04 RXCS<2..0>, clock source, 000=TxC Pin, 100=BRG, 110=Receive Clock + * 03..00 RXBR<3..0>, rate divisor, 0000=1 + */ + RegValue=BIT6; + write_reg(info, TXS, RegValue); + + /* Control Register + * + * 6,4,2,0 CLKSEL<3..0>, 0 = TcCLK in, 1 = Auxclk out + */ + info->port_array[0]->ctrlreg_value |= (BIT0 << (info->port_num * 2)); + write_control_reg(info); + + tx_set_idle(info); + + /* RRC Receive Ready Control 0 + * + * 07..05 Reserved, must be 0 + * 04..00 RRC<4..0> Rx FIFO trigger active 0x00 = 1 byte + */ + write_reg(info, RRC, 0x00); + + /* TRC0 Transmit Ready Control 0 + * + * 07..05 Reserved, must be 0 + * 04..00 TRC<4..0> Tx FIFO trigger active 0x10 = 16 bytes + */ + write_reg(info, TRC0, 0x10); + + /* TRC1 Transmit Ready Control 1 + * + * 07..05 Reserved, must be 0 + * 04..00 TRC<4..0> Tx FIFO trigger inactive 0x1e = 31 bytes (full-1) + */ + write_reg(info, TRC1, 0x1e); + + /* CTL, MSCI control register + * + * 07..06 Reserved, set to 0 + * 05 UDRNC, underrun control, 0=abort 1=CRC+flag (HDLC/BSC) + * 04 IDLC, idle control, 0=mark 1=idle register + * 03 BRK, break, 0=off 1 =on (async) + * 02 SYNCLD, sync char load enable (BSC) 1=enabled + * 01 GOP, go active on poll (LOOP mode) 1=enabled + * 00 RTS, RTS output control, 0=active 1=inactive + * + * 0001 0001 + */ + RegValue = 0x10; + if (!(info->serial_signals & SerialSignal_RTS)) + RegValue |= 0x01; + write_reg(info, CTL, RegValue); + + /* enable status interrupts */ + info->ie0_value |= TXINTE + RXINTE; + write_reg(info, IE0, info->ie0_value); + + /* enable break detect interrupt */ + info->ie1_value = BRKD; + write_reg(info, IE1, info->ie1_value); + + /* enable rx overrun interrupt */ + info->ie2_value = OVRN; + write_reg(info, IE2, info->ie2_value); + + set_rate( info, info->params.data_rate * 16 ); +} + +/* Program the SCA for HDLC communications. + */ +static void hdlc_mode(SLMP_INFO *info) +{ + unsigned char RegValue; + u32 DpllDivisor; + + // Can't use DPLL because SCA outputs recovered clock on RxC when + // DPLL mode selected. This causes output contention with RxC receiver. + // Use of DPLL would require external hardware to disable RxC receiver + // when DPLL mode selected. + info->params.flags &= ~(HDLC_FLAG_TXC_DPLL + HDLC_FLAG_RXC_DPLL); + + /* disable DMA interrupts */ + write_reg(info, TXDMA + DIR, 0); + write_reg(info, RXDMA + DIR, 0); + + /* MD0, Mode Register 0 + * + * 07..05 PRCTL<2..0>, Protocol Mode, 100=HDLC + * 04 AUTO, Auto-enable (RTS/CTS/DCD) + * 03 Reserved, must be 0 + * 02 CRCCC, CRC Calculation, 1=enabled + * 01 CRC1, CRC selection, 0=CRC-16,1=CRC-CCITT-16 + * 00 CRC0, CRC initial value, 1 = all 1s + * + * 1000 0001 + */ + RegValue = 0x81; + if (info->params.flags & HDLC_FLAG_AUTO_CTS) + RegValue |= BIT4; + if (info->params.flags & HDLC_FLAG_AUTO_DCD) + RegValue |= BIT4; + if (info->params.crc_type == HDLC_CRC_16_CCITT) + RegValue |= BIT2 + BIT1; + write_reg(info, MD0, RegValue); + + /* MD1, Mode Register 1 + * + * 07..06 ADDRS<1..0>, Address detect, 00=no addr check + * 05..04 TXCHR<1..0>, tx char size, 00=8 bits + * 03..02 RXCHR<1..0>, rx char size, 00=8 bits + * 01..00 PMPM<1..0>, Parity mode, 00=no parity + * + * 0000 0000 + */ + RegValue = 0x00; + write_reg(info, MD1, RegValue); + + /* MD2, Mode Register 2 + * + * 07 NRZFM, 0=NRZ, 1=FM + * 06..05 CODE<1..0> Encoding, 00=NRZ + * 04..03 DRATE<1..0> DPLL Divisor, 00=8 + * 02 Reserved, must be 0 + * 01..00 CNCT<1..0> Channel connection, 0=normal + * + * 0000 0000 + */ + RegValue = 0x00; + switch(info->params.encoding) { + case HDLC_ENCODING_NRZI: RegValue |= BIT5; break; + case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT7 + BIT5; break; /* aka FM1 */ + case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT7 + BIT6; break; /* aka FM0 */ + case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT7; break; /* aka Manchester */ +#if 0 + case HDLC_ENCODING_NRZB: /* not supported */ + case HDLC_ENCODING_NRZI_MARK: /* not supported */ + case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: /* not supported */ +#endif + } + if ( info->params.flags & HDLC_FLAG_DPLL_DIV16 ) { + DpllDivisor = 16; + RegValue |= BIT3; + } else if ( info->params.flags & HDLC_FLAG_DPLL_DIV8 ) { + DpllDivisor = 8; + } else { + DpllDivisor = 32; + RegValue |= BIT4; + } + write_reg(info, MD2, RegValue); + + + /* RXS, Receive clock source + * + * 07 Reserved, must be 0 + * 06..04 RXCS<2..0>, clock source, 000=RxC Pin, 100=BRG, 110=DPLL + * 03..00 RXBR<3..0>, rate divisor, 0000=1 + */ + RegValue=0; + if (info->params.flags & HDLC_FLAG_RXC_BRG) + RegValue |= BIT6; + if (info->params.flags & HDLC_FLAG_RXC_DPLL) + RegValue |= BIT6 + BIT5; + write_reg(info, RXS, RegValue); + + /* TXS, Transmit clock source + * + * 07 Reserved, must be 0 + * 06..04 RXCS<2..0>, clock source, 000=TxC Pin, 100=BRG, 110=Receive Clock + * 03..00 RXBR<3..0>, rate divisor, 0000=1 + */ + RegValue=0; + if (info->params.flags & HDLC_FLAG_TXC_BRG) + RegValue |= BIT6; + if (info->params.flags & HDLC_FLAG_TXC_DPLL) + RegValue |= BIT6 + BIT5; + write_reg(info, TXS, RegValue); + + if (info->params.flags & HDLC_FLAG_RXC_DPLL) + set_rate(info, info->params.clock_speed * DpllDivisor); + else + set_rate(info, info->params.clock_speed); + + /* GPDATA (General Purpose I/O Data Register) + * + * 6,4,2,0 CLKSEL<3..0>, 0 = TcCLK in, 1 = Auxclk out + */ + if (info->params.flags & HDLC_FLAG_TXC_BRG) + info->port_array[0]->ctrlreg_value |= (BIT0 << (info->port_num * 2)); + else + info->port_array[0]->ctrlreg_value &= ~(BIT0 << (info->port_num * 2)); + write_control_reg(info); + + /* RRC Receive Ready Control 0 + * + * 07..05 Reserved, must be 0 + * 04..00 RRC<4..0> Rx FIFO trigger active + */ + write_reg(info, RRC, rx_active_fifo_level); + + /* TRC0 Transmit Ready Control 0 + * + * 07..05 Reserved, must be 0 + * 04..00 TRC<4..0> Tx FIFO trigger active + */ + write_reg(info, TRC0, tx_active_fifo_level); + + /* TRC1 Transmit Ready Control 1 + * + * 07..05 Reserved, must be 0 + * 04..00 TRC<4..0> Tx FIFO trigger inactive 0x1f = 32 bytes (full) + */ + write_reg(info, TRC1, (unsigned char)(tx_negate_fifo_level - 1)); + + /* DMR, DMA Mode Register + * + * 07..05 Reserved, must be 0 + * 04 TMOD, Transfer Mode: 1=chained-block + * 03 Reserved, must be 0 + * 02 NF, Number of Frames: 1=multi-frame + * 01 CNTE, Frame End IRQ Counter enable: 0=disabled + * 00 Reserved, must be 0 + * + * 0001 0100 + */ + write_reg(info, TXDMA + DMR, 0x14); + write_reg(info, RXDMA + DMR, 0x14); + + /* Set chain pointer base (upper 8 bits of 24 bit addr) */ + write_reg(info, RXDMA + CPB, + (unsigned char)(info->buffer_list_phys >> 16)); + + /* Set chain pointer base (upper 8 bits of 24 bit addr) */ + write_reg(info, TXDMA + CPB, + (unsigned char)(info->buffer_list_phys >> 16)); + + /* enable status interrupts. other code enables/disables + * the individual sources for these two interrupt classes. + */ + info->ie0_value |= TXINTE + RXINTE; + write_reg(info, IE0, info->ie0_value); + + /* CTL, MSCI control register + * + * 07..06 Reserved, set to 0 + * 05 UDRNC, underrun control, 0=abort 1=CRC+flag (HDLC/BSC) + * 04 IDLC, idle control, 0=mark 1=idle register + * 03 BRK, break, 0=off 1 =on (async) + * 02 SYNCLD, sync char load enable (BSC) 1=enabled + * 01 GOP, go active on poll (LOOP mode) 1=enabled + * 00 RTS, RTS output control, 0=active 1=inactive + * + * 0001 0001 + */ + RegValue = 0x10; + if (!(info->serial_signals & SerialSignal_RTS)) + RegValue |= 0x01; + write_reg(info, CTL, RegValue); + + /* preamble not supported ! */ + + tx_set_idle(info); + tx_stop(info); + rx_stop(info); + + set_rate(info, info->params.clock_speed); + + if (info->params.loopback) + enable_loopback(info,1); +} + +/* Set the transmit HDLC idle mode + */ +static void tx_set_idle(SLMP_INFO *info) +{ + unsigned char RegValue = 0xff; + + /* Map API idle mode to SCA register bits */ + switch(info->idle_mode) { + case HDLC_TXIDLE_FLAGS: RegValue = 0x7e; break; + case HDLC_TXIDLE_ALT_ZEROS_ONES: RegValue = 0xaa; break; + case HDLC_TXIDLE_ZEROS: RegValue = 0x00; break; + case HDLC_TXIDLE_ONES: RegValue = 0xff; break; + case HDLC_TXIDLE_ALT_MARK_SPACE: RegValue = 0xaa; break; + case HDLC_TXIDLE_SPACE: RegValue = 0x00; break; + case HDLC_TXIDLE_MARK: RegValue = 0xff; break; + } + + write_reg(info, IDL, RegValue); +} + +/* Query the adapter for the state of the V24 status (input) signals. + */ +static void get_signals(SLMP_INFO *info) +{ + u16 status = read_reg(info, SR3); + u16 gpstatus = read_status_reg(info); + u16 testbit; + + /* clear all serial signals except DTR and RTS */ + info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; + + /* set serial signal bits to reflect MISR */ + + if (!(status & BIT3)) + info->serial_signals |= SerialSignal_CTS; + + if ( !(status & BIT2)) + info->serial_signals |= SerialSignal_DCD; + + testbit = BIT1 << (info->port_num * 2); // Port 0..3 RI is GPDATA<1,3,5,7> + if (!(gpstatus & testbit)) + info->serial_signals |= SerialSignal_RI; + + testbit = BIT0 << (info->port_num * 2); // Port 0..3 DSR is GPDATA<0,2,4,6> + if (!(gpstatus & testbit)) + info->serial_signals |= SerialSignal_DSR; +} + +/* Set the state of DTR and RTS based on contents of + * serial_signals member of device context. + */ +static void set_signals(SLMP_INFO *info) +{ + unsigned char RegValue; + u16 EnableBit; + + RegValue = read_reg(info, CTL); + if (info->serial_signals & SerialSignal_RTS) + RegValue &= ~BIT0; + else + RegValue |= BIT0; + write_reg(info, CTL, RegValue); + + // Port 0..3 DTR is ctrl reg <1,3,5,7> + EnableBit = BIT1 << (info->port_num*2); + if (info->serial_signals & SerialSignal_DTR) + info->port_array[0]->ctrlreg_value &= ~EnableBit; + else + info->port_array[0]->ctrlreg_value |= EnableBit; + write_control_reg(info); +} + +/*******************/ +/* DMA Buffer Code */ +/*******************/ + +/* Set the count for all receive buffers to SCABUFSIZE + * and set the current buffer to the first buffer. This effectively + * makes all buffers free and discards any data in buffers. + */ +static void rx_reset_buffers(SLMP_INFO *info) +{ + rx_free_frame_buffers(info, 0, info->rx_buf_count - 1); +} + +/* Free the buffers used by a received frame + * + * info pointer to device instance data + * first index of 1st receive buffer of frame + * last index of last receive buffer of frame + */ +static void rx_free_frame_buffers(SLMP_INFO *info, unsigned int first, unsigned int last) +{ + bool done = false; + + while(!done) { + /* reset current buffer for reuse */ + info->rx_buf_list[first].status = 0xff; + + if (first == last) { + done = true; + /* set new last rx descriptor address */ + write_reg16(info, RXDMA + EDA, info->rx_buf_list_ex[first].phys_entry); + } + + first++; + if (first == info->rx_buf_count) + first = 0; + } + + /* set current buffer to next buffer after last buffer of frame */ + info->current_rx_buf = first; +} + +/* Return a received frame from the receive DMA buffers. + * Only frames received without errors are returned. + * + * Return Value: true if frame returned, otherwise false + */ +static bool rx_get_frame(SLMP_INFO *info) +{ + unsigned int StartIndex, EndIndex; /* index of 1st and last buffers of Rx frame */ + unsigned short status; + unsigned int framesize = 0; + bool ReturnCode = false; + unsigned long flags; + struct tty_struct *tty = info->port.tty; + unsigned char addr_field = 0xff; + SCADESC *desc; + SCADESC_EX *desc_ex; + +CheckAgain: + /* assume no frame returned, set zero length */ + framesize = 0; + addr_field = 0xff; + + /* + * current_rx_buf points to the 1st buffer of the next available + * receive frame. To find the last buffer of the frame look for + * a non-zero status field in the buffer entries. (The status + * field is set by the 16C32 after completing a receive frame. + */ + StartIndex = EndIndex = info->current_rx_buf; + + for ( ;; ) { + desc = &info->rx_buf_list[EndIndex]; + desc_ex = &info->rx_buf_list_ex[EndIndex]; + + if (desc->status == 0xff) + goto Cleanup; /* current desc still in use, no frames available */ + + if (framesize == 0 && info->params.addr_filter != 0xff) + addr_field = desc_ex->virt_addr[0]; + + framesize += desc->length; + + /* Status != 0 means last buffer of frame */ + if (desc->status) + break; + + EndIndex++; + if (EndIndex == info->rx_buf_count) + EndIndex = 0; + + if (EndIndex == info->current_rx_buf) { + /* all buffers have been 'used' but none mark */ + /* the end of a frame. Reset buffers and receiver. */ + if ( info->rx_enabled ){ + spin_lock_irqsave(&info->lock,flags); + rx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + } + goto Cleanup; + } + + } + + /* check status of receive frame */ + + /* frame status is byte stored after frame data + * + * 7 EOM (end of msg), 1 = last buffer of frame + * 6 Short Frame, 1 = short frame + * 5 Abort, 1 = frame aborted + * 4 Residue, 1 = last byte is partial + * 3 Overrun, 1 = overrun occurred during frame reception + * 2 CRC, 1 = CRC error detected + * + */ + status = desc->status; + + /* ignore CRC bit if not using CRC (bit is undefined) */ + /* Note:CRC is not save to data buffer */ + if (info->params.crc_type == HDLC_CRC_NONE) + status &= ~BIT2; + + if (framesize == 0 || + (addr_field != 0xff && addr_field != info->params.addr_filter)) { + /* discard 0 byte frames, this seems to occur sometime + * when remote is idling flags. + */ + rx_free_frame_buffers(info, StartIndex, EndIndex); + goto CheckAgain; + } + + if (framesize < 2) + status |= BIT6; + + if (status & (BIT6+BIT5+BIT3+BIT2)) { + /* received frame has errors, + * update counts and mark frame size as 0 + */ + if (status & BIT6) + info->icount.rxshort++; + else if (status & BIT5) + info->icount.rxabort++; + else if (status & BIT3) + info->icount.rxover++; + else + info->icount.rxcrc++; + + framesize = 0; +#if SYNCLINK_GENERIC_HDLC + { + info->netdev->stats.rx_errors++; + info->netdev->stats.rx_frame_errors++; + } +#endif + } + + if ( debug_level >= DEBUG_LEVEL_BH ) + printk("%s(%d):%s rx_get_frame() status=%04X size=%d\n", + __FILE__,__LINE__,info->device_name,status,framesize); + + if ( debug_level >= DEBUG_LEVEL_DATA ) + trace_block(info,info->rx_buf_list_ex[StartIndex].virt_addr, + min_t(int, framesize,SCABUFSIZE),0); + + if (framesize) { + if (framesize > info->max_frame_size) + info->icount.rxlong++; + else { + /* copy dma buffer(s) to contiguous intermediate buffer */ + int copy_count = framesize; + int index = StartIndex; + unsigned char *ptmp = info->tmp_rx_buf; + info->tmp_rx_buf_count = framesize; + + info->icount.rxok++; + + while(copy_count) { + int partial_count = min(copy_count,SCABUFSIZE); + memcpy( ptmp, + info->rx_buf_list_ex[index].virt_addr, + partial_count ); + ptmp += partial_count; + copy_count -= partial_count; + + if ( ++index == info->rx_buf_count ) + index = 0; + } + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_rx(info,info->tmp_rx_buf,framesize); + else +#endif + ldisc_receive_buf(tty,info->tmp_rx_buf, + info->flag_buf, framesize); + } + } + /* Free the buffers used by this frame. */ + rx_free_frame_buffers( info, StartIndex, EndIndex ); + + ReturnCode = true; + +Cleanup: + if ( info->rx_enabled && info->rx_overflow ) { + /* Receiver is enabled, but needs to restarted due to + * rx buffer overflow. If buffers are empty, restart receiver. + */ + if (info->rx_buf_list[EndIndex].status == 0xff) { + spin_lock_irqsave(&info->lock,flags); + rx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + } + } + + return ReturnCode; +} + +/* load the transmit DMA buffer with data + */ +static void tx_load_dma_buffer(SLMP_INFO *info, const char *buf, unsigned int count) +{ + unsigned short copy_count; + unsigned int i = 0; + SCADESC *desc; + SCADESC_EX *desc_ex; + + if ( debug_level >= DEBUG_LEVEL_DATA ) + trace_block(info,buf, min_t(int, count,SCABUFSIZE), 1); + + /* Copy source buffer to one or more DMA buffers, starting with + * the first transmit dma buffer. + */ + for(i=0;;) + { + copy_count = min_t(unsigned short,count,SCABUFSIZE); + + desc = &info->tx_buf_list[i]; + desc_ex = &info->tx_buf_list_ex[i]; + + load_pci_memory(info, desc_ex->virt_addr,buf,copy_count); + + desc->length = copy_count; + desc->status = 0; + + buf += copy_count; + count -= copy_count; + + if (!count) + break; + + i++; + if (i >= info->tx_buf_count) + i = 0; + } + + info->tx_buf_list[i].status = 0x81; /* set EOM and EOT status */ + info->last_tx_buf = ++i; +} + +static bool register_test(SLMP_INFO *info) +{ + static unsigned char testval[] = {0x00, 0xff, 0xaa, 0x55, 0x69, 0x96}; + static unsigned int count = ARRAY_SIZE(testval); + unsigned int i; + bool rc = true; + unsigned long flags; + + spin_lock_irqsave(&info->lock,flags); + reset_port(info); + + /* assume failure */ + info->init_error = DiagStatus_AddressFailure; + + /* Write bit patterns to various registers but do it out of */ + /* sync, then read back and verify values. */ + + for (i = 0 ; i < count ; i++) { + write_reg(info, TMC, testval[i]); + write_reg(info, IDL, testval[(i+1)%count]); + write_reg(info, SA0, testval[(i+2)%count]); + write_reg(info, SA1, testval[(i+3)%count]); + + if ( (read_reg(info, TMC) != testval[i]) || + (read_reg(info, IDL) != testval[(i+1)%count]) || + (read_reg(info, SA0) != testval[(i+2)%count]) || + (read_reg(info, SA1) != testval[(i+3)%count]) ) + { + rc = false; + break; + } + } + + reset_port(info); + spin_unlock_irqrestore(&info->lock,flags); + + return rc; +} + +static bool irq_test(SLMP_INFO *info) +{ + unsigned long timeout; + unsigned long flags; + + unsigned char timer = (info->port_num & 1) ? TIMER2 : TIMER0; + + spin_lock_irqsave(&info->lock,flags); + reset_port(info); + + /* assume failure */ + info->init_error = DiagStatus_IrqFailure; + info->irq_occurred = false; + + /* setup timer0 on SCA0 to interrupt */ + + /* IER2<7..4> = timer<3..0> interrupt enables (1=enabled) */ + write_reg(info, IER2, (unsigned char)((info->port_num & 1) ? BIT6 : BIT4)); + + write_reg(info, (unsigned char)(timer + TEPR), 0); /* timer expand prescale */ + write_reg16(info, (unsigned char)(timer + TCONR), 1); /* timer constant */ + + + /* TMCS, Timer Control/Status Register + * + * 07 CMF, Compare match flag (read only) 1=match + * 06 ECMI, CMF Interrupt Enable: 1=enabled + * 05 Reserved, must be 0 + * 04 TME, Timer Enable + * 03..00 Reserved, must be 0 + * + * 0101 0000 + */ + write_reg(info, (unsigned char)(timer + TMCS), 0x50); + + spin_unlock_irqrestore(&info->lock,flags); + + timeout=100; + while( timeout-- && !info->irq_occurred ) { + msleep_interruptible(10); + } + + spin_lock_irqsave(&info->lock,flags); + reset_port(info); + spin_unlock_irqrestore(&info->lock,flags); + + return info->irq_occurred; +} + +/* initialize individual SCA device (2 ports) + */ +static bool sca_init(SLMP_INFO *info) +{ + /* set wait controller to single mem partition (low), no wait states */ + write_reg(info, PABR0, 0); /* wait controller addr boundary 0 */ + write_reg(info, PABR1, 0); /* wait controller addr boundary 1 */ + write_reg(info, WCRL, 0); /* wait controller low range */ + write_reg(info, WCRM, 0); /* wait controller mid range */ + write_reg(info, WCRH, 0); /* wait controller high range */ + + /* DPCR, DMA Priority Control + * + * 07..05 Not used, must be 0 + * 04 BRC, bus release condition: 0=all transfers complete + * 03 CCC, channel change condition: 0=every cycle + * 02..00 PR<2..0>, priority 100=round robin + * + * 00000100 = 0x04 + */ + write_reg(info, DPCR, dma_priority); + + /* DMA Master Enable, BIT7: 1=enable all channels */ + write_reg(info, DMER, 0x80); + + /* enable all interrupt classes */ + write_reg(info, IER0, 0xff); /* TxRDY,RxRDY,TxINT,RxINT (ports 0-1) */ + write_reg(info, IER1, 0xff); /* DMIB,DMIA (channels 0-3) */ + write_reg(info, IER2, 0xf0); /* TIRQ (timers 0-3) */ + + /* ITCR, interrupt control register + * 07 IPC, interrupt priority, 0=MSCI->DMA + * 06..05 IAK<1..0>, Acknowledge cycle, 00=non-ack cycle + * 04 VOS, Vector Output, 0=unmodified vector + * 03..00 Reserved, must be 0 + */ + write_reg(info, ITCR, 0); + + return true; +} + +/* initialize adapter hardware + */ +static bool init_adapter(SLMP_INFO *info) +{ + int i; + + /* Set BIT30 of Local Control Reg 0x50 to reset SCA */ + volatile u32 *MiscCtrl = (u32 *)(info->lcr_base + 0x50); + u32 readval; + + info->misc_ctrl_value |= BIT30; + *MiscCtrl = info->misc_ctrl_value; + + /* + * Force at least 170ns delay before clearing + * reset bit. Each read from LCR takes at least + * 30ns so 10 times for 300ns to be safe. + */ + for(i=0;i<10;i++) + readval = *MiscCtrl; + + info->misc_ctrl_value &= ~BIT30; + *MiscCtrl = info->misc_ctrl_value; + + /* init control reg (all DTRs off, all clksel=input) */ + info->ctrlreg_value = 0xaa; + write_control_reg(info); + + { + volatile u32 *LCR1BRDR = (u32 *)(info->lcr_base + 0x2c); + lcr1_brdr_value &= ~(BIT5 + BIT4 + BIT3); + + switch(read_ahead_count) + { + case 16: + lcr1_brdr_value |= BIT5 + BIT4 + BIT3; + break; + case 8: + lcr1_brdr_value |= BIT5 + BIT4; + break; + case 4: + lcr1_brdr_value |= BIT5 + BIT3; + break; + case 0: + lcr1_brdr_value |= BIT5; + break; + } + + *LCR1BRDR = lcr1_brdr_value; + *MiscCtrl = misc_ctrl_value; + } + + sca_init(info->port_array[0]); + sca_init(info->port_array[2]); + + return true; +} + +/* Loopback an HDLC frame to test the hardware + * interrupt and DMA functions. + */ +static bool loopback_test(SLMP_INFO *info) +{ +#define TESTFRAMESIZE 20 + + unsigned long timeout; + u16 count = TESTFRAMESIZE; + unsigned char buf[TESTFRAMESIZE]; + bool rc = false; + unsigned long flags; + + struct tty_struct *oldtty = info->port.tty; + u32 speed = info->params.clock_speed; + + info->params.clock_speed = 3686400; + info->port.tty = NULL; + + /* assume failure */ + info->init_error = DiagStatus_DmaFailure; + + /* build and send transmit frame */ + for (count = 0; count < TESTFRAMESIZE;++count) + buf[count] = (unsigned char)count; + + memset(info->tmp_rx_buf,0,TESTFRAMESIZE); + + /* program hardware for HDLC and enabled receiver */ + spin_lock_irqsave(&info->lock,flags); + hdlc_mode(info); + enable_loopback(info,1); + rx_start(info); + info->tx_count = count; + tx_load_dma_buffer(info,buf,count); + tx_start(info); + spin_unlock_irqrestore(&info->lock,flags); + + /* wait for receive complete */ + /* Set a timeout for waiting for interrupt. */ + for ( timeout = 100; timeout; --timeout ) { + msleep_interruptible(10); + + if (rx_get_frame(info)) { + rc = true; + break; + } + } + + /* verify received frame length and contents */ + if (rc && + ( info->tmp_rx_buf_count != count || + memcmp(buf, info->tmp_rx_buf,count))) { + rc = false; + } + + spin_lock_irqsave(&info->lock,flags); + reset_adapter(info); + spin_unlock_irqrestore(&info->lock,flags); + + info->params.clock_speed = speed; + info->port.tty = oldtty; + + return rc; +} + +/* Perform diagnostics on hardware + */ +static int adapter_test( SLMP_INFO *info ) +{ + unsigned long flags; + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):Testing device %s\n", + __FILE__,__LINE__,info->device_name ); + + spin_lock_irqsave(&info->lock,flags); + init_adapter(info); + spin_unlock_irqrestore(&info->lock,flags); + + info->port_array[0]->port_count = 0; + + if ( register_test(info->port_array[0]) && + register_test(info->port_array[1])) { + + info->port_array[0]->port_count = 2; + + if ( register_test(info->port_array[2]) && + register_test(info->port_array[3]) ) + info->port_array[0]->port_count += 2; + } + else { + printk( "%s(%d):Register test failure for device %s Addr=%08lX\n", + __FILE__,__LINE__,info->device_name, (unsigned long)(info->phys_sca_base)); + return -ENODEV; + } + + if ( !irq_test(info->port_array[0]) || + !irq_test(info->port_array[1]) || + (info->port_count == 4 && !irq_test(info->port_array[2])) || + (info->port_count == 4 && !irq_test(info->port_array[3]))) { + printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", + __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); + return -ENODEV; + } + + if (!loopback_test(info->port_array[0]) || + !loopback_test(info->port_array[1]) || + (info->port_count == 4 && !loopback_test(info->port_array[2])) || + (info->port_count == 4 && !loopback_test(info->port_array[3]))) { + printk( "%s(%d):DMA test failure for device %s\n", + __FILE__,__LINE__,info->device_name); + return -ENODEV; + } + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):device %s passed diagnostics\n", + __FILE__,__LINE__,info->device_name ); + + info->port_array[0]->init_error = 0; + info->port_array[1]->init_error = 0; + if ( info->port_count > 2 ) { + info->port_array[2]->init_error = 0; + info->port_array[3]->init_error = 0; + } + + return 0; +} + +/* Test the shared memory on a PCI adapter. + */ +static bool memory_test(SLMP_INFO *info) +{ + static unsigned long testval[] = { 0x0, 0x55555555, 0xaaaaaaaa, + 0x66666666, 0x99999999, 0xffffffff, 0x12345678 }; + unsigned long count = ARRAY_SIZE(testval); + unsigned long i; + unsigned long limit = SCA_MEM_SIZE/sizeof(unsigned long); + unsigned long * addr = (unsigned long *)info->memory_base; + + /* Test data lines with test pattern at one location. */ + + for ( i = 0 ; i < count ; i++ ) { + *addr = testval[i]; + if ( *addr != testval[i] ) + return false; + } + + /* Test address lines with incrementing pattern over */ + /* entire address range. */ + + for ( i = 0 ; i < limit ; i++ ) { + *addr = i * 4; + addr++; + } + + addr = (unsigned long *)info->memory_base; + + for ( i = 0 ; i < limit ; i++ ) { + if ( *addr != i * 4 ) + return false; + addr++; + } + + memset( info->memory_base, 0, SCA_MEM_SIZE ); + return true; +} + +/* Load data into PCI adapter shared memory. + * + * The PCI9050 releases control of the local bus + * after completing the current read or write operation. + * + * While the PCI9050 write FIFO not empty, the + * PCI9050 treats all of the writes as a single transaction + * and does not release the bus. This causes DMA latency problems + * at high speeds when copying large data blocks to the shared memory. + * + * This function breaks a write into multiple transations by + * interleaving a read which flushes the write FIFO and 'completes' + * the write transation. This allows any pending DMA request to gain control + * of the local bus in a timely fasion. + */ +static void load_pci_memory(SLMP_INFO *info, char* dest, const char* src, unsigned short count) +{ + /* A load interval of 16 allows for 4 32-bit writes at */ + /* 136ns each for a maximum latency of 542ns on the local bus.*/ + + unsigned short interval = count / sca_pci_load_interval; + unsigned short i; + + for ( i = 0 ; i < interval ; i++ ) + { + memcpy(dest, src, sca_pci_load_interval); + read_status_reg(info); + dest += sca_pci_load_interval; + src += sca_pci_load_interval; + } + + memcpy(dest, src, count % sca_pci_load_interval); +} + +static void trace_block(SLMP_INFO *info,const char* data, int count, int xmit) +{ + int i; + int linecount; + if (xmit) + printk("%s tx data:\n",info->device_name); + else + printk("%s rx data:\n",info->device_name); + + while(count) { + if (count > 16) + linecount = 16; + else + linecount = count; + + for(i=0;i=040 && data[i]<=0176) + printk("%c",data[i]); + else + printk("."); + } + printk("\n"); + + data += linecount; + count -= linecount; + } +} /* end of trace_block() */ + +/* called when HDLC frame times out + * update stats and do tx completion processing + */ +static void tx_timeout(unsigned long context) +{ + SLMP_INFO *info = (SLMP_INFO*)context; + unsigned long flags; + + if ( debug_level >= DEBUG_LEVEL_INFO ) + printk( "%s(%d):%s tx_timeout()\n", + __FILE__,__LINE__,info->device_name); + if(info->tx_active && info->params.mode == MGSL_MODE_HDLC) { + info->icount.txtimeout++; + } + spin_lock_irqsave(&info->lock,flags); + info->tx_active = false; + info->tx_count = info->tx_put = info->tx_get = 0; + + spin_unlock_irqrestore(&info->lock,flags); + +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) + hdlcdev_tx_done(info); + else +#endif + bh_transmit(info); +} + +/* called to periodically check the DSR/RI modem signal input status + */ +static void status_timeout(unsigned long context) +{ + u16 status = 0; + SLMP_INFO *info = (SLMP_INFO*)context; + unsigned long flags; + unsigned char delta; + + + spin_lock_irqsave(&info->lock,flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock,flags); + + /* check for DSR/RI state change */ + + delta = info->old_signals ^ info->serial_signals; + info->old_signals = info->serial_signals; + + if (delta & SerialSignal_DSR) + status |= MISCSTATUS_DSR_LATCHED|(info->serial_signals&SerialSignal_DSR); + + if (delta & SerialSignal_RI) + status |= MISCSTATUS_RI_LATCHED|(info->serial_signals&SerialSignal_RI); + + if (delta & SerialSignal_DCD) + status |= MISCSTATUS_DCD_LATCHED|(info->serial_signals&SerialSignal_DCD); + + if (delta & SerialSignal_CTS) + status |= MISCSTATUS_CTS_LATCHED|(info->serial_signals&SerialSignal_CTS); + + if (status) + isr_io_pin(info,status); + + mod_timer(&info->status_timer, jiffies + msecs_to_jiffies(10)); +} + + +/* Register Access Routines - + * All registers are memory mapped + */ +#define CALC_REGADDR() \ + unsigned char * RegAddr = (unsigned char*)(info->sca_base + Addr); \ + if (info->port_num > 1) \ + RegAddr += 256; /* port 0-1 SCA0, 2-3 SCA1 */ \ + if ( info->port_num & 1) { \ + if (Addr > 0x7f) \ + RegAddr += 0x40; /* DMA access */ \ + else if (Addr > 0x1f && Addr < 0x60) \ + RegAddr += 0x20; /* MSCI access */ \ + } + + +static unsigned char read_reg(SLMP_INFO * info, unsigned char Addr) +{ + CALC_REGADDR(); + return *RegAddr; +} +static void write_reg(SLMP_INFO * info, unsigned char Addr, unsigned char Value) +{ + CALC_REGADDR(); + *RegAddr = Value; +} + +static u16 read_reg16(SLMP_INFO * info, unsigned char Addr) +{ + CALC_REGADDR(); + return *((u16 *)RegAddr); +} + +static void write_reg16(SLMP_INFO * info, unsigned char Addr, u16 Value) +{ + CALC_REGADDR(); + *((u16 *)RegAddr) = Value; +} + +static unsigned char read_status_reg(SLMP_INFO * info) +{ + unsigned char *RegAddr = (unsigned char *)info->statctrl_base; + return *RegAddr; +} + +static void write_control_reg(SLMP_INFO * info) +{ + unsigned char *RegAddr = (unsigned char *)info->statctrl_base; + *RegAddr = info->port_array[0]->ctrlreg_value; +} + + +static int __devinit synclinkmp_init_one (struct pci_dev *dev, + const struct pci_device_id *ent) +{ + if (pci_enable_device(dev)) { + printk("error enabling pci device %p\n", dev); + return -EIO; + } + device_init( ++synclinkmp_adapter_count, dev ); + return 0; +} + +static void __devexit synclinkmp_remove_one (struct pci_dev *dev) +{ +} -- cgit v1.2.3 From 282361a046edd9d58a134f358a3f65a7cb8655d9 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 22 Feb 2011 16:23:22 -0800 Subject: tty: move ipwireless driver from drivers/char/pcmcia/ to drivers/tty/ As planned by Arnd Bergmann, this moves the ipwireless driver to the drivers/tty/ directory as that's where it really belongs. Cc: Arnd Bergmann Cc: Alan Cox Cc: Jiri Slaby Cc: David Sterba Signed-off-by: Greg Kroah-Hartman --- MAINTAINERS | 2 +- drivers/char/pcmcia/ipwireless/Makefile | 10 - drivers/char/pcmcia/ipwireless/hardware.c | 1764 ----------------------- drivers/char/pcmcia/ipwireless/hardware.h | 62 - drivers/char/pcmcia/ipwireless/main.c | 335 ----- drivers/char/pcmcia/ipwireless/main.h | 68 - drivers/char/pcmcia/ipwireless/network.c | 508 ------- drivers/char/pcmcia/ipwireless/network.h | 53 - drivers/char/pcmcia/ipwireless/setup_protocol.h | 108 -- drivers/char/pcmcia/ipwireless/tty.c | 679 --------- drivers/char/pcmcia/ipwireless/tty.h | 45 - drivers/tty/Makefile | 2 + drivers/tty/ipwireless/Makefile | 10 + drivers/tty/ipwireless/hardware.c | 1764 +++++++++++++++++++++++ drivers/tty/ipwireless/hardware.h | 62 + drivers/tty/ipwireless/main.c | 335 +++++ drivers/tty/ipwireless/main.h | 68 + drivers/tty/ipwireless/network.c | 508 +++++++ drivers/tty/ipwireless/network.h | 53 + drivers/tty/ipwireless/setup_protocol.h | 108 ++ drivers/tty/ipwireless/tty.c | 679 +++++++++ drivers/tty/ipwireless/tty.h | 45 + 22 files changed, 3635 insertions(+), 3633 deletions(-) delete mode 100644 drivers/char/pcmcia/ipwireless/Makefile delete mode 100644 drivers/char/pcmcia/ipwireless/hardware.c delete mode 100644 drivers/char/pcmcia/ipwireless/hardware.h delete mode 100644 drivers/char/pcmcia/ipwireless/main.c delete mode 100644 drivers/char/pcmcia/ipwireless/main.h delete mode 100644 drivers/char/pcmcia/ipwireless/network.c delete mode 100644 drivers/char/pcmcia/ipwireless/network.h delete mode 100644 drivers/char/pcmcia/ipwireless/setup_protocol.h delete mode 100644 drivers/char/pcmcia/ipwireless/tty.c delete mode 100644 drivers/char/pcmcia/ipwireless/tty.h create mode 100644 drivers/tty/ipwireless/Makefile create mode 100644 drivers/tty/ipwireless/hardware.c create mode 100644 drivers/tty/ipwireless/hardware.h create mode 100644 drivers/tty/ipwireless/main.c create mode 100644 drivers/tty/ipwireless/main.h create mode 100644 drivers/tty/ipwireless/network.c create mode 100644 drivers/tty/ipwireless/network.h create mode 100644 drivers/tty/ipwireless/setup_protocol.h create mode 100644 drivers/tty/ipwireless/tty.c create mode 100644 drivers/tty/ipwireless/tty.h (limited to 'drivers/char') diff --git a/MAINTAINERS b/MAINTAINERS index 1eaeda66a525..e39337a1b958 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3423,7 +3423,7 @@ M: Jiri Kosina M: David Sterba S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/jikos/ipwireless_cs.git -F: drivers/char/pcmcia/ipwireless/ +F: drivers/tty/ipwireless/ IPX NETWORK LAYER M: Arnaldo Carvalho de Melo diff --git a/drivers/char/pcmcia/ipwireless/Makefile b/drivers/char/pcmcia/ipwireless/Makefile deleted file mode 100644 index db80873d7f20..000000000000 --- a/drivers/char/pcmcia/ipwireless/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# -# drivers/char/pcmcia/ipwireless/Makefile -# -# Makefile for the IPWireless driver -# - -obj-$(CONFIG_IPWIRELESS) += ipwireless.o - -ipwireless-y := hardware.o main.o network.o tty.o - diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c deleted file mode 100644 index 0aeb5a38d296..000000000000 --- a/drivers/char/pcmcia/ipwireless/hardware.c +++ /dev/null @@ -1,1764 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#include -#include -#include -#include -#include -#include - -#include "hardware.h" -#include "setup_protocol.h" -#include "network.h" -#include "main.h" - -static void ipw_send_setup_packet(struct ipw_hardware *hw); -static void handle_received_SETUP_packet(struct ipw_hardware *ipw, - unsigned int address, - const unsigned char *data, int len, - int is_last); -static void ipwireless_setup_timer(unsigned long data); -static void handle_received_CTRL_packet(struct ipw_hardware *hw, - unsigned int channel_idx, const unsigned char *data, int len); - -/*#define TIMING_DIAGNOSTICS*/ - -#ifdef TIMING_DIAGNOSTICS - -static struct timing_stats { - unsigned long last_report_time; - unsigned long read_time; - unsigned long write_time; - unsigned long read_bytes; - unsigned long write_bytes; - unsigned long start_time; -}; - -static void start_timing(void) -{ - timing_stats.start_time = jiffies; -} - -static void end_read_timing(unsigned length) -{ - timing_stats.read_time += (jiffies - start_time); - timing_stats.read_bytes += length + 2; - report_timing(); -} - -static void end_write_timing(unsigned length) -{ - timing_stats.write_time += (jiffies - start_time); - timing_stats.write_bytes += length + 2; - report_timing(); -} - -static void report_timing(void) -{ - unsigned long since = jiffies - timing_stats.last_report_time; - - /* If it's been more than one second... */ - if (since >= HZ) { - int first = (timing_stats.last_report_time == 0); - - timing_stats.last_report_time = jiffies; - if (!first) - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": %u us elapsed - read %lu bytes in %u us, wrote %lu bytes in %u us\n", - jiffies_to_usecs(since), - timing_stats.read_bytes, - jiffies_to_usecs(timing_stats.read_time), - timing_stats.write_bytes, - jiffies_to_usecs(timing_stats.write_time)); - - timing_stats.read_time = 0; - timing_stats.write_time = 0; - timing_stats.read_bytes = 0; - timing_stats.write_bytes = 0; - } -} -#else -static void start_timing(void) { } -static void end_read_timing(unsigned length) { } -static void end_write_timing(unsigned length) { } -#endif - -/* Imported IPW definitions */ - -#define LL_MTU_V1 318 -#define LL_MTU_V2 250 -#define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2) - -#define PRIO_DATA 2 -#define PRIO_CTRL 1 -#define PRIO_SETUP 0 - -/* Addresses */ -#define ADDR_SETUP_PROT 0 - -/* Protocol ids */ -enum { - /* Identifier for the Com Data protocol */ - TL_PROTOCOLID_COM_DATA = 0, - - /* Identifier for the Com Control protocol */ - TL_PROTOCOLID_COM_CTRL = 1, - - /* Identifier for the Setup protocol */ - TL_PROTOCOLID_SETUP = 2 -}; - -/* Number of bytes in NL packet header (cannot do - * sizeof(nl_packet_header) since it's a bitfield) */ -#define NL_FIRST_PACKET_HEADER_SIZE 3 - -/* Number of bytes in NL packet header (cannot do - * sizeof(nl_packet_header) since it's a bitfield) */ -#define NL_FOLLOWING_PACKET_HEADER_SIZE 1 - -struct nl_first_packet_header { - unsigned char protocol:3; - unsigned char address:3; - unsigned char packet_rank:2; - unsigned char length_lsb; - unsigned char length_msb; -}; - -struct nl_packet_header { - unsigned char protocol:3; - unsigned char address:3; - unsigned char packet_rank:2; -}; - -/* Value of 'packet_rank' above */ -#define NL_INTERMEDIATE_PACKET 0x0 -#define NL_LAST_PACKET 0x1 -#define NL_FIRST_PACKET 0x2 - -union nl_packet { - /* Network packet header of the first packet (a special case) */ - struct nl_first_packet_header hdr_first; - /* Network packet header of the following packets (if any) */ - struct nl_packet_header hdr; - /* Complete network packet (header + data) */ - unsigned char rawpkt[LL_MTU_MAX]; -} __attribute__ ((__packed__)); - -#define HW_VERSION_UNKNOWN -1 -#define HW_VERSION_1 1 -#define HW_VERSION_2 2 - -/* IPW I/O ports */ -#define IOIER 0x00 /* Interrupt Enable Register */ -#define IOIR 0x02 /* Interrupt Source/ACK register */ -#define IODCR 0x04 /* Data Control Register */ -#define IODRR 0x06 /* Data Read Register */ -#define IODWR 0x08 /* Data Write Register */ -#define IOESR 0x0A /* Embedded Driver Status Register */ -#define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */ -#define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */ - -/* I/O ports and bit definitions for version 1 of the hardware */ - -/* IER bits*/ -#define IER_RXENABLED 0x1 -#define IER_TXENABLED 0x2 - -/* ISR bits */ -#define IR_RXINTR 0x1 -#define IR_TXINTR 0x2 - -/* DCR bits */ -#define DCR_RXDONE 0x1 -#define DCR_TXDONE 0x2 -#define DCR_RXRESET 0x4 -#define DCR_TXRESET 0x8 - -/* I/O ports and bit definitions for version 2 of the hardware */ - -struct MEMCCR { - unsigned short reg_config_option; /* PCCOR: Configuration Option Register */ - unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */ - unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */ - unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */ - unsigned short reg_ext_status; /* PCESR: Extendend Status Register */ - unsigned short reg_io_base; /* PCIOB: I/O Base Register */ -}; - -struct MEMINFREG { - unsigned short memreg_tx_old; /* TX Register (R/W) */ - unsigned short pad1; - unsigned short memreg_rx_done; /* RXDone Register (R/W) */ - unsigned short pad2; - unsigned short memreg_rx; /* RX Register (R/W) */ - unsigned short pad3; - unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */ - unsigned short pad4; - unsigned long memreg_card_present;/* Mask for Host to check (R) for - * CARD_PRESENT_VALUE */ - unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */ -}; - -#define CARD_PRESENT_VALUE (0xBEEFCAFEUL) - -#define MEMTX_TX 0x0001 -#define MEMRX_RX 0x0001 -#define MEMRX_RX_DONE 0x0001 -#define MEMRX_PCINTACKK 0x0001 - -#define NL_NUM_OF_PRIORITIES 3 -#define NL_NUM_OF_PROTOCOLS 3 -#define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS - -struct ipw_hardware { - unsigned int base_port; - short hw_version; - unsigned short ll_mtu; - spinlock_t lock; - - int initializing; - int init_loops; - struct timer_list setup_timer; - - /* Flag if hw is ready to send next packet */ - int tx_ready; - /* Count of pending packets to be sent */ - int tx_queued; - struct list_head tx_queue[NL_NUM_OF_PRIORITIES]; - - int rx_bytes_queued; - struct list_head rx_queue; - /* Pool of rx_packet structures that are not currently used. */ - struct list_head rx_pool; - int rx_pool_size; - /* True if reception of data is blocked while userspace processes it. */ - int blocking_rx; - /* True if there is RX data ready on the hardware. */ - int rx_ready; - unsigned short last_memtx_serial; - /* - * Newer versions of the V2 card firmware send serial numbers in the - * MemTX register. 'serial_number_detected' is set true when we detect - * a non-zero serial number (indicating the new firmware). Thereafter, - * the driver can safely ignore the Timer Recovery re-sends to avoid - * out-of-sync problems. - */ - int serial_number_detected; - struct work_struct work_rx; - - /* True if we are to send the set-up data to the hardware. */ - int to_setup; - - /* Card has been removed */ - int removed; - /* Saved irq value when we disable the interrupt. */ - int irq; - /* True if this driver is shutting down. */ - int shutting_down; - /* Modem control lines */ - unsigned int control_lines[NL_NUM_OF_ADDRESSES]; - struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES]; - - struct tasklet_struct tasklet; - - /* The handle for the network layer, for the sending of events to it. */ - struct ipw_network *network; - struct MEMINFREG __iomem *memory_info_regs; - struct MEMCCR __iomem *memregs_CCR; - void (*reboot_callback) (void *data); - void *reboot_callback_data; - - unsigned short __iomem *memreg_tx; -}; - -/* - * Packet info structure for tx packets. - * Note: not all the fields defined here are required for all protocols - */ -struct ipw_tx_packet { - struct list_head queue; - /* channel idx + 1 */ - unsigned char dest_addr; - /* SETUP, CTRL or DATA */ - unsigned char protocol; - /* Length of data block, which starts at the end of this structure */ - unsigned short length; - /* Sending state */ - /* Offset of where we've sent up to so far */ - unsigned long offset; - /* Count of packet fragments, starting at 0 */ - int fragment_count; - - /* Called after packet is sent and before is freed */ - void (*packet_callback) (void *cb_data, unsigned int packet_length); - void *callback_data; -}; - -/* Signals from DTE */ -#define COMCTRL_RTS 0 -#define COMCTRL_DTR 1 - -/* Signals from DCE */ -#define COMCTRL_CTS 2 -#define COMCTRL_DCD 3 -#define COMCTRL_DSR 4 -#define COMCTRL_RI 5 - -struct ipw_control_packet_body { - /* DTE signal or DCE signal */ - unsigned char sig_no; - /* 0: set signal, 1: clear signal */ - unsigned char value; -} __attribute__ ((__packed__)); - -struct ipw_control_packet { - struct ipw_tx_packet header; - struct ipw_control_packet_body body; -}; - -struct ipw_rx_packet { - struct list_head queue; - unsigned int capacity; - unsigned int length; - unsigned int protocol; - unsigned int channel_idx; -}; - -static char *data_type(const unsigned char *buf, unsigned length) -{ - struct nl_packet_header *hdr = (struct nl_packet_header *) buf; - - if (length == 0) - return " "; - - if (hdr->packet_rank & NL_FIRST_PACKET) { - switch (hdr->protocol) { - case TL_PROTOCOLID_COM_DATA: return "DATA "; - case TL_PROTOCOLID_COM_CTRL: return "CTRL "; - case TL_PROTOCOLID_SETUP: return "SETUP"; - default: return "???? "; - } - } else - return " "; -} - -#define DUMP_MAX_BYTES 64 - -static void dump_data_bytes(const char *type, const unsigned char *data, - unsigned length) -{ - char prefix[56]; - - sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ", - type, data_type(data, length)); - print_hex_dump_bytes(prefix, 0, (void *)data, - length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES); -} - -static void swap_packet_bitfield_to_le(unsigned char *data) -{ -#ifdef __BIG_ENDIAN_BITFIELD - unsigned char tmp = *data, ret = 0; - - /* - * transform bits from aa.bbb.ccc to ccc.bbb.aa - */ - ret |= tmp & 0xc0 >> 6; - ret |= tmp & 0x38 >> 1; - ret |= tmp & 0x07 << 5; - *data = ret & 0xff; -#endif -} - -static void swap_packet_bitfield_from_le(unsigned char *data) -{ -#ifdef __BIG_ENDIAN_BITFIELD - unsigned char tmp = *data, ret = 0; - - /* - * transform bits from ccc.bbb.aa to aa.bbb.ccc - */ - ret |= tmp & 0xe0 >> 5; - ret |= tmp & 0x1c << 1; - ret |= tmp & 0x03 << 6; - *data = ret & 0xff; -#endif -} - -static void do_send_fragment(struct ipw_hardware *hw, unsigned char *data, - unsigned length) -{ - unsigned i; - unsigned long flags; - - start_timing(); - BUG_ON(length > hw->ll_mtu); - - if (ipwireless_debug) - dump_data_bytes("send", data, length); - - spin_lock_irqsave(&hw->lock, flags); - - hw->tx_ready = 0; - swap_packet_bitfield_to_le(data); - - if (hw->hw_version == HW_VERSION_1) { - outw((unsigned short) length, hw->base_port + IODWR); - - for (i = 0; i < length; i += 2) { - unsigned short d = data[i]; - __le16 raw_data; - - if (i + 1 < length) - d |= data[i + 1] << 8; - raw_data = cpu_to_le16(d); - outw(raw_data, hw->base_port + IODWR); - } - - outw(DCR_TXDONE, hw->base_port + IODCR); - } else if (hw->hw_version == HW_VERSION_2) { - outw((unsigned short) length, hw->base_port); - - for (i = 0; i < length; i += 2) { - unsigned short d = data[i]; - __le16 raw_data; - - if (i + 1 < length) - d |= data[i + 1] << 8; - raw_data = cpu_to_le16(d); - outw(raw_data, hw->base_port); - } - while ((i & 3) != 2) { - outw((unsigned short) 0xDEAD, hw->base_port); - i += 2; - } - writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx); - } - - spin_unlock_irqrestore(&hw->lock, flags); - - end_write_timing(length); -} - -static void do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet) -{ - unsigned short fragment_data_len; - unsigned short data_left = packet->length - packet->offset; - unsigned short header_size; - union nl_packet pkt; - - header_size = - (packet->fragment_count == 0) - ? NL_FIRST_PACKET_HEADER_SIZE - : NL_FOLLOWING_PACKET_HEADER_SIZE; - fragment_data_len = hw->ll_mtu - header_size; - if (data_left < fragment_data_len) - fragment_data_len = data_left; - - /* - * hdr_first is now in machine bitfield order, which will be swapped - * to le just before it goes to hw - */ - pkt.hdr_first.protocol = packet->protocol; - pkt.hdr_first.address = packet->dest_addr; - pkt.hdr_first.packet_rank = 0; - - /* First packet? */ - if (packet->fragment_count == 0) { - pkt.hdr_first.packet_rank |= NL_FIRST_PACKET; - pkt.hdr_first.length_lsb = (unsigned char) packet->length; - pkt.hdr_first.length_msb = - (unsigned char) (packet->length >> 8); - } - - memcpy(pkt.rawpkt + header_size, - ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) + - packet->offset, fragment_data_len); - packet->offset += fragment_data_len; - packet->fragment_count++; - - /* Last packet? (May also be first packet.) */ - if (packet->offset == packet->length) - pkt.hdr_first.packet_rank |= NL_LAST_PACKET; - do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len); - - /* If this packet has unsent data, then re-queue it. */ - if (packet->offset < packet->length) { - /* - * Re-queue it at the head of the highest priority queue so - * it goes before all other packets - */ - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - list_add(&packet->queue, &hw->tx_queue[0]); - hw->tx_queued++; - spin_unlock_irqrestore(&hw->lock, flags); - } else { - if (packet->packet_callback) - packet->packet_callback(packet->callback_data, - packet->length); - kfree(packet); - } -} - -static void ipw_setup_hardware(struct ipw_hardware *hw) -{ - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - if (hw->hw_version == HW_VERSION_1) { - /* Reset RX FIFO */ - outw(DCR_RXRESET, hw->base_port + IODCR); - /* SB: Reset TX FIFO */ - outw(DCR_TXRESET, hw->base_port + IODCR); - - /* Enable TX and RX interrupts. */ - outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER); - } else { - /* - * Set INTRACK bit (bit 0), which means we must explicitly - * acknowledge interrupts by clearing bit 2 of reg_config_and_status. - */ - unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status); - - csr |= 1; - writew(csr, &hw->memregs_CCR->reg_config_and_status); - } - spin_unlock_irqrestore(&hw->lock, flags); -} - -/* - * If 'packet' is NULL, then this function allocates a new packet, setting its - * length to 0 and ensuring it has the specified minimum amount of free space. - * - * If 'packet' is not NULL, then this function enlarges it if it doesn't - * have the specified minimum amount of free space. - * - */ -static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw, - struct ipw_rx_packet *packet, - int minimum_free_space) -{ - - if (!packet) { - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - if (!list_empty(&hw->rx_pool)) { - packet = list_first_entry(&hw->rx_pool, - struct ipw_rx_packet, queue); - hw->rx_pool_size--; - spin_unlock_irqrestore(&hw->lock, flags); - list_del(&packet->queue); - } else { - const int min_capacity = - ipwireless_ppp_mru(hw->network) + 2; - int new_capacity; - - spin_unlock_irqrestore(&hw->lock, flags); - new_capacity = - (minimum_free_space > min_capacity - ? minimum_free_space - : min_capacity); - packet = kmalloc(sizeof(struct ipw_rx_packet) - + new_capacity, GFP_ATOMIC); - if (!packet) - return NULL; - packet->capacity = new_capacity; - } - packet->length = 0; - } - - if (packet->length + minimum_free_space > packet->capacity) { - struct ipw_rx_packet *old_packet = packet; - - packet = kmalloc(sizeof(struct ipw_rx_packet) + - old_packet->length + minimum_free_space, - GFP_ATOMIC); - if (!packet) { - kfree(old_packet); - return NULL; - } - memcpy(packet, old_packet, - sizeof(struct ipw_rx_packet) - + old_packet->length); - packet->capacity = old_packet->length + minimum_free_space; - kfree(old_packet); - } - - return packet; -} - -static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet) -{ - if (hw->rx_pool_size > 6) - kfree(packet); - else { - hw->rx_pool_size++; - list_add(&packet->queue, &hw->rx_pool); - } -} - -static void queue_received_packet(struct ipw_hardware *hw, - unsigned int protocol, - unsigned int address, - const unsigned char *data, int length, - int is_last) -{ - unsigned int channel_idx = address - 1; - struct ipw_rx_packet *packet = NULL; - unsigned long flags; - - /* Discard packet if channel index is out of range. */ - if (channel_idx >= NL_NUM_OF_ADDRESSES) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": data packet has bad address %u\n", address); - return; - } - - /* - * ->packet_assembler is safe to touch unlocked, this is the only place - */ - if (protocol == TL_PROTOCOLID_COM_DATA) { - struct ipw_rx_packet **assem = - &hw->packet_assembler[channel_idx]; - - /* - * Create a new packet, or assembler already contains one - * enlarge it by 'length' bytes. - */ - (*assem) = pool_allocate(hw, *assem, length); - if (!(*assem)) { - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": no memory for incomming data packet, dropped!\n"); - return; - } - (*assem)->protocol = protocol; - (*assem)->channel_idx = channel_idx; - - /* Append this packet data onto existing data. */ - memcpy((unsigned char *)(*assem) + - sizeof(struct ipw_rx_packet) - + (*assem)->length, data, length); - (*assem)->length += length; - if (is_last) { - packet = *assem; - *assem = NULL; - /* Count queued DATA bytes only */ - spin_lock_irqsave(&hw->lock, flags); - hw->rx_bytes_queued += packet->length; - spin_unlock_irqrestore(&hw->lock, flags); - } - } else { - /* If it's a CTRL packet, don't assemble, just queue it. */ - packet = pool_allocate(hw, NULL, length); - if (!packet) { - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": no memory for incomming ctrl packet, dropped!\n"); - return; - } - packet->protocol = protocol; - packet->channel_idx = channel_idx; - memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet), - data, length); - packet->length = length; - } - - /* - * If this is the last packet, then send the assembled packet on to the - * network layer. - */ - if (packet) { - spin_lock_irqsave(&hw->lock, flags); - list_add_tail(&packet->queue, &hw->rx_queue); - /* Block reception of incoming packets if queue is full. */ - hw->blocking_rx = - (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE); - - spin_unlock_irqrestore(&hw->lock, flags); - schedule_work(&hw->work_rx); - } -} - -/* - * Workqueue callback - */ -static void ipw_receive_data_work(struct work_struct *work_rx) -{ - struct ipw_hardware *hw = - container_of(work_rx, struct ipw_hardware, work_rx); - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - while (!list_empty(&hw->rx_queue)) { - struct ipw_rx_packet *packet = - list_first_entry(&hw->rx_queue, - struct ipw_rx_packet, queue); - - if (hw->shutting_down) - break; - list_del(&packet->queue); - - /* - * Note: ipwireless_network_packet_received must be called in a - * process context (i.e. via schedule_work) because the tty - * output code can sleep in the tty_flip_buffer_push call. - */ - if (packet->protocol == TL_PROTOCOLID_COM_DATA) { - if (hw->network != NULL) { - /* If the network hasn't been disconnected. */ - spin_unlock_irqrestore(&hw->lock, flags); - /* - * This must run unlocked due to tty processing - * and mutex locking - */ - ipwireless_network_packet_received( - hw->network, - packet->channel_idx, - (unsigned char *)packet - + sizeof(struct ipw_rx_packet), - packet->length); - spin_lock_irqsave(&hw->lock, flags); - } - /* Count queued DATA bytes only */ - hw->rx_bytes_queued -= packet->length; - } else { - /* - * This is safe to be called locked, callchain does - * not block - */ - handle_received_CTRL_packet(hw, packet->channel_idx, - (unsigned char *)packet - + sizeof(struct ipw_rx_packet), - packet->length); - } - pool_free(hw, packet); - /* - * Unblock reception of incoming packets if queue is no longer - * full. - */ - hw->blocking_rx = - hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE; - if (hw->shutting_down) - break; - } - spin_unlock_irqrestore(&hw->lock, flags); -} - -static void handle_received_CTRL_packet(struct ipw_hardware *hw, - unsigned int channel_idx, - const unsigned char *data, int len) -{ - const struct ipw_control_packet_body *body = - (const struct ipw_control_packet_body *) data; - unsigned int changed_mask; - - if (len != sizeof(struct ipw_control_packet_body)) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": control packet was %d bytes - wrong size!\n", - len); - return; - } - - switch (body->sig_no) { - case COMCTRL_CTS: - changed_mask = IPW_CONTROL_LINE_CTS; - break; - case COMCTRL_DCD: - changed_mask = IPW_CONTROL_LINE_DCD; - break; - case COMCTRL_DSR: - changed_mask = IPW_CONTROL_LINE_DSR; - break; - case COMCTRL_RI: - changed_mask = IPW_CONTROL_LINE_RI; - break; - default: - changed_mask = 0; - } - - if (changed_mask != 0) { - if (body->value) - hw->control_lines[channel_idx] |= changed_mask; - else - hw->control_lines[channel_idx] &= ~changed_mask; - if (hw->network) - ipwireless_network_notify_control_line_change( - hw->network, - channel_idx, - hw->control_lines[channel_idx], - changed_mask); - } -} - -static void handle_received_packet(struct ipw_hardware *hw, - const union nl_packet *packet, - unsigned short len) -{ - unsigned int protocol = packet->hdr.protocol; - unsigned int address = packet->hdr.address; - unsigned int header_length; - const unsigned char *data; - unsigned int data_len; - int is_last = packet->hdr.packet_rank & NL_LAST_PACKET; - - if (packet->hdr.packet_rank & NL_FIRST_PACKET) - header_length = NL_FIRST_PACKET_HEADER_SIZE; - else - header_length = NL_FOLLOWING_PACKET_HEADER_SIZE; - - data = packet->rawpkt + header_length; - data_len = len - header_length; - switch (protocol) { - case TL_PROTOCOLID_COM_DATA: - case TL_PROTOCOLID_COM_CTRL: - queue_received_packet(hw, protocol, address, data, data_len, - is_last); - break; - case TL_PROTOCOLID_SETUP: - handle_received_SETUP_packet(hw, address, data, data_len, - is_last); - break; - } -} - -static void acknowledge_data_read(struct ipw_hardware *hw) -{ - if (hw->hw_version == HW_VERSION_1) - outw(DCR_RXDONE, hw->base_port + IODCR); - else - writew(MEMRX_PCINTACKK, - &hw->memory_info_regs->memreg_pc_interrupt_ack); -} - -/* - * Retrieve a packet from the IPW hardware. - */ -static void do_receive_packet(struct ipw_hardware *hw) -{ - unsigned len; - unsigned i; - unsigned char pkt[LL_MTU_MAX]; - - start_timing(); - - if (hw->hw_version == HW_VERSION_1) { - len = inw(hw->base_port + IODRR); - if (len > hw->ll_mtu) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": received a packet of %u bytes - longer than the MTU!\n", len); - outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR); - return; - } - - for (i = 0; i < len; i += 2) { - __le16 raw_data = inw(hw->base_port + IODRR); - unsigned short data = le16_to_cpu(raw_data); - - pkt[i] = (unsigned char) data; - pkt[i + 1] = (unsigned char) (data >> 8); - } - } else { - len = inw(hw->base_port); - if (len > hw->ll_mtu) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": received a packet of %u bytes - longer than the MTU!\n", len); - writew(MEMRX_PCINTACKK, - &hw->memory_info_regs->memreg_pc_interrupt_ack); - return; - } - - for (i = 0; i < len; i += 2) { - __le16 raw_data = inw(hw->base_port); - unsigned short data = le16_to_cpu(raw_data); - - pkt[i] = (unsigned char) data; - pkt[i + 1] = (unsigned char) (data >> 8); - } - - while ((i & 3) != 2) { - inw(hw->base_port); - i += 2; - } - } - - acknowledge_data_read(hw); - - swap_packet_bitfield_from_le(pkt); - - if (ipwireless_debug) - dump_data_bytes("recv", pkt, len); - - handle_received_packet(hw, (union nl_packet *) pkt, len); - - end_read_timing(len); -} - -static int get_current_packet_priority(struct ipw_hardware *hw) -{ - /* - * If we're initializing, don't send anything of higher priority than - * PRIO_SETUP. The network layer therefore need not care about - * hardware initialization - any of its stuff will simply be queued - * until setup is complete. - */ - return (hw->to_setup || hw->initializing - ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES); -} - -/* - * return 1 if something has been received from hw - */ -static int get_packets_from_hw(struct ipw_hardware *hw) -{ - int received = 0; - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - while (hw->rx_ready && !hw->blocking_rx) { - received = 1; - hw->rx_ready--; - spin_unlock_irqrestore(&hw->lock, flags); - - do_receive_packet(hw); - - spin_lock_irqsave(&hw->lock, flags); - } - spin_unlock_irqrestore(&hw->lock, flags); - - return received; -} - -/* - * Send pending packet up to given priority, prioritize SETUP data until - * hardware is fully setup. - * - * return 1 if more packets can be sent - */ -static int send_pending_packet(struct ipw_hardware *hw, int priority_limit) -{ - int more_to_send = 0; - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - if (hw->tx_queued && hw->tx_ready) { - int priority; - struct ipw_tx_packet *packet = NULL; - - /* Pick a packet */ - for (priority = 0; priority < priority_limit; priority++) { - if (!list_empty(&hw->tx_queue[priority])) { - packet = list_first_entry( - &hw->tx_queue[priority], - struct ipw_tx_packet, - queue); - - hw->tx_queued--; - list_del(&packet->queue); - - break; - } - } - if (!packet) { - hw->tx_queued = 0; - spin_unlock_irqrestore(&hw->lock, flags); - return 0; - } - - spin_unlock_irqrestore(&hw->lock, flags); - - /* Send */ - do_send_packet(hw, packet); - - /* Check if more to send */ - spin_lock_irqsave(&hw->lock, flags); - for (priority = 0; priority < priority_limit; priority++) - if (!list_empty(&hw->tx_queue[priority])) { - more_to_send = 1; - break; - } - - if (!more_to_send) - hw->tx_queued = 0; - } - spin_unlock_irqrestore(&hw->lock, flags); - - return more_to_send; -} - -/* - * Send and receive all queued packets. - */ -static void ipwireless_do_tasklet(unsigned long hw_) -{ - struct ipw_hardware *hw = (struct ipw_hardware *) hw_; - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - if (hw->shutting_down) { - spin_unlock_irqrestore(&hw->lock, flags); - return; - } - - if (hw->to_setup == 1) { - /* - * Initial setup data sent to hardware - */ - hw->to_setup = 2; - spin_unlock_irqrestore(&hw->lock, flags); - - ipw_setup_hardware(hw); - ipw_send_setup_packet(hw); - - send_pending_packet(hw, PRIO_SETUP + 1); - get_packets_from_hw(hw); - } else { - int priority_limit = get_current_packet_priority(hw); - int again; - - spin_unlock_irqrestore(&hw->lock, flags); - - do { - again = send_pending_packet(hw, priority_limit); - again |= get_packets_from_hw(hw); - } while (again); - } -} - -/* - * return true if the card is physically present. - */ -static int is_card_present(struct ipw_hardware *hw) -{ - if (hw->hw_version == HW_VERSION_1) - return inw(hw->base_port + IOIR) != 0xFFFF; - else - return readl(&hw->memory_info_regs->memreg_card_present) == - CARD_PRESENT_VALUE; -} - -static irqreturn_t ipwireless_handle_v1_interrupt(int irq, - struct ipw_hardware *hw) -{ - unsigned short irqn; - - irqn = inw(hw->base_port + IOIR); - - /* Check if card is present */ - if (irqn == 0xFFFF) - return IRQ_NONE; - else if (irqn != 0) { - unsigned short ack = 0; - unsigned long flags; - - /* Transmit complete. */ - if (irqn & IR_TXINTR) { - ack |= IR_TXINTR; - spin_lock_irqsave(&hw->lock, flags); - hw->tx_ready = 1; - spin_unlock_irqrestore(&hw->lock, flags); - } - /* Received data */ - if (irqn & IR_RXINTR) { - ack |= IR_RXINTR; - spin_lock_irqsave(&hw->lock, flags); - hw->rx_ready++; - spin_unlock_irqrestore(&hw->lock, flags); - } - if (ack != 0) { - outw(ack, hw->base_port + IOIR); - tasklet_schedule(&hw->tasklet); - } - return IRQ_HANDLED; - } - return IRQ_NONE; -} - -static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw) -{ - unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status); - - csr &= 0xfffd; - writew(csr, &hw->memregs_CCR->reg_config_and_status); -} - -static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq, - struct ipw_hardware *hw) -{ - int tx = 0; - int rx = 0; - int rx_repeat = 0; - int try_mem_tx_old; - unsigned long flags; - - do { - - unsigned short memtx = readw(hw->memreg_tx); - unsigned short memtx_serial; - unsigned short memrxdone = - readw(&hw->memory_info_regs->memreg_rx_done); - - try_mem_tx_old = 0; - - /* check whether the interrupt was generated by ipwireless card */ - if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) { - - /* check if the card uses memreg_tx_old register */ - if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { - memtx = readw(&hw->memory_info_regs->memreg_tx_old); - if (memtx & MEMTX_TX) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": Using memreg_tx_old\n"); - hw->memreg_tx = - &hw->memory_info_regs->memreg_tx_old; - } else { - return IRQ_NONE; - } - } else - return IRQ_NONE; - } - - /* - * See if the card is physically present. Note that while it is - * powering up, it appears not to be present. - */ - if (!is_card_present(hw)) { - acknowledge_pcmcia_interrupt(hw); - return IRQ_HANDLED; - } - - memtx_serial = memtx & (unsigned short) 0xff00; - if (memtx & MEMTX_TX) { - writew(memtx_serial, hw->memreg_tx); - - if (hw->serial_number_detected) { - if (memtx_serial != hw->last_memtx_serial) { - hw->last_memtx_serial = memtx_serial; - spin_lock_irqsave(&hw->lock, flags); - hw->rx_ready++; - spin_unlock_irqrestore(&hw->lock, flags); - rx = 1; - } else - /* Ignore 'Timer Recovery' duplicates. */ - rx_repeat = 1; - } else { - /* - * If a non-zero serial number is seen, then enable - * serial number checking. - */ - if (memtx_serial != 0) { - hw->serial_number_detected = 1; - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME - ": memreg_tx serial num detected\n"); - - spin_lock_irqsave(&hw->lock, flags); - hw->rx_ready++; - spin_unlock_irqrestore(&hw->lock, flags); - } - rx = 1; - } - } - if (memrxdone & MEMRX_RX_DONE) { - writew(0, &hw->memory_info_regs->memreg_rx_done); - spin_lock_irqsave(&hw->lock, flags); - hw->tx_ready = 1; - spin_unlock_irqrestore(&hw->lock, flags); - tx = 1; - } - if (tx) - writew(MEMRX_PCINTACKK, - &hw->memory_info_regs->memreg_pc_interrupt_ack); - - acknowledge_pcmcia_interrupt(hw); - - if (tx || rx) - tasklet_schedule(&hw->tasklet); - else if (!rx_repeat) { - if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { - if (hw->serial_number_detected) - printk(KERN_WARNING IPWIRELESS_PCCARD_NAME - ": spurious interrupt - new_tx mode\n"); - else { - printk(KERN_WARNING IPWIRELESS_PCCARD_NAME - ": no valid memreg_tx value - switching to the old memreg_tx\n"); - hw->memreg_tx = - &hw->memory_info_regs->memreg_tx_old; - try_mem_tx_old = 1; - } - } else - printk(KERN_WARNING IPWIRELESS_PCCARD_NAME - ": spurious interrupt - old_tx mode\n"); - } - - } while (try_mem_tx_old == 1); - - return IRQ_HANDLED; -} - -irqreturn_t ipwireless_interrupt(int irq, void *dev_id) -{ - struct ipw_dev *ipw = dev_id; - - if (ipw->hardware->hw_version == HW_VERSION_1) - return ipwireless_handle_v1_interrupt(irq, ipw->hardware); - else - return ipwireless_handle_v2_v3_interrupt(irq, ipw->hardware); -} - -static void flush_packets_to_hw(struct ipw_hardware *hw) -{ - int priority_limit; - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - priority_limit = get_current_packet_priority(hw); - spin_unlock_irqrestore(&hw->lock, flags); - - while (send_pending_packet(hw, priority_limit)); -} - -static void send_packet(struct ipw_hardware *hw, int priority, - struct ipw_tx_packet *packet) -{ - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - list_add_tail(&packet->queue, &hw->tx_queue[priority]); - hw->tx_queued++; - spin_unlock_irqrestore(&hw->lock, flags); - - flush_packets_to_hw(hw); -} - -/* Create data packet, non-atomic allocation */ -static void *alloc_data_packet(int data_size, - unsigned char dest_addr, - unsigned char protocol) -{ - struct ipw_tx_packet *packet = kzalloc( - sizeof(struct ipw_tx_packet) + data_size, - GFP_ATOMIC); - - if (!packet) - return NULL; - - INIT_LIST_HEAD(&packet->queue); - packet->dest_addr = dest_addr; - packet->protocol = protocol; - packet->length = data_size; - - return packet; -} - -static void *alloc_ctrl_packet(int header_size, - unsigned char dest_addr, - unsigned char protocol, - unsigned char sig_no) -{ - /* - * sig_no is located right after ipw_tx_packet struct in every - * CTRL or SETUP packets, we can use ipw_control_packet as a - * common struct - */ - struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC); - - if (!packet) - return NULL; - - INIT_LIST_HEAD(&packet->header.queue); - packet->header.dest_addr = dest_addr; - packet->header.protocol = protocol; - packet->header.length = header_size - sizeof(struct ipw_tx_packet); - packet->body.sig_no = sig_no; - - return packet; -} - -int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx, - const unsigned char *data, unsigned int length, - void (*callback) (void *cb, unsigned int length), - void *callback_data) -{ - struct ipw_tx_packet *packet; - - packet = alloc_data_packet(length, (channel_idx + 1), - TL_PROTOCOLID_COM_DATA); - if (!packet) - return -ENOMEM; - packet->packet_callback = callback; - packet->callback_data = callback_data; - memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data, - length); - - send_packet(hw, PRIO_DATA, packet); - return 0; -} - -static int set_control_line(struct ipw_hardware *hw, int prio, - unsigned int channel_idx, int line, int state) -{ - struct ipw_control_packet *packet; - int protocolid = TL_PROTOCOLID_COM_CTRL; - - if (prio == PRIO_SETUP) - protocolid = TL_PROTOCOLID_SETUP; - - packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet), - (channel_idx + 1), protocolid, line); - if (!packet) - return -ENOMEM; - packet->header.length = sizeof(struct ipw_control_packet_body); - packet->body.value = (state == 0 ? 0 : 1); - send_packet(hw, prio, &packet->header); - return 0; -} - - -static int set_DTR(struct ipw_hardware *hw, int priority, - unsigned int channel_idx, int state) -{ - if (state != 0) - hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR; - else - hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR; - - return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state); -} - -static int set_RTS(struct ipw_hardware *hw, int priority, - unsigned int channel_idx, int state) -{ - if (state != 0) - hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS; - else - hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS; - - return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state); -} - -int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx, - int state) -{ - return set_DTR(hw, PRIO_CTRL, channel_idx, state); -} - -int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx, - int state) -{ - return set_RTS(hw, PRIO_CTRL, channel_idx, state); -} - -struct ipw_setup_get_version_query_packet { - struct ipw_tx_packet header; - struct tl_setup_get_version_qry body; -}; - -struct ipw_setup_config_packet { - struct ipw_tx_packet header; - struct tl_setup_config_msg body; -}; - -struct ipw_setup_config_done_packet { - struct ipw_tx_packet header; - struct tl_setup_config_done_msg body; -}; - -struct ipw_setup_open_packet { - struct ipw_tx_packet header; - struct tl_setup_open_msg body; -}; - -struct ipw_setup_info_packet { - struct ipw_tx_packet header; - struct tl_setup_info_msg body; -}; - -struct ipw_setup_reboot_msg_ack { - struct ipw_tx_packet header; - struct TlSetupRebootMsgAck body; -}; - -/* This handles the actual initialization of the card */ -static void __handle_setup_get_version_rsp(struct ipw_hardware *hw) -{ - struct ipw_setup_config_packet *config_packet; - struct ipw_setup_config_done_packet *config_done_packet; - struct ipw_setup_open_packet *open_packet; - struct ipw_setup_info_packet *info_packet; - int port; - unsigned int channel_idx; - - /* generate config packet */ - for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) { - config_packet = alloc_ctrl_packet( - sizeof(struct ipw_setup_config_packet), - ADDR_SETUP_PROT, - TL_PROTOCOLID_SETUP, - TL_SETUP_SIGNO_CONFIG_MSG); - if (!config_packet) - goto exit_nomem; - config_packet->header.length = sizeof(struct tl_setup_config_msg); - config_packet->body.port_no = port; - config_packet->body.prio_data = PRIO_DATA; - config_packet->body.prio_ctrl = PRIO_CTRL; - send_packet(hw, PRIO_SETUP, &config_packet->header); - } - config_done_packet = alloc_ctrl_packet( - sizeof(struct ipw_setup_config_done_packet), - ADDR_SETUP_PROT, - TL_PROTOCOLID_SETUP, - TL_SETUP_SIGNO_CONFIG_DONE_MSG); - if (!config_done_packet) - goto exit_nomem; - config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg); - send_packet(hw, PRIO_SETUP, &config_done_packet->header); - - /* generate open packet */ - for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) { - open_packet = alloc_ctrl_packet( - sizeof(struct ipw_setup_open_packet), - ADDR_SETUP_PROT, - TL_PROTOCOLID_SETUP, - TL_SETUP_SIGNO_OPEN_MSG); - if (!open_packet) - goto exit_nomem; - open_packet->header.length = sizeof(struct tl_setup_open_msg); - open_packet->body.port_no = port; - send_packet(hw, PRIO_SETUP, &open_packet->header); - } - for (channel_idx = 0; - channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) { - int ret; - - ret = set_DTR(hw, PRIO_SETUP, channel_idx, - (hw->control_lines[channel_idx] & - IPW_CONTROL_LINE_DTR) != 0); - if (ret) { - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": error setting DTR (%d)\n", ret); - return; - } - - set_RTS(hw, PRIO_SETUP, channel_idx, - (hw->control_lines [channel_idx] & - IPW_CONTROL_LINE_RTS) != 0); - if (ret) { - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": error setting RTS (%d)\n", ret); - return; - } - } - /* - * For NDIS we assume that we are using sync PPP frames, for COM async. - * This driver uses NDIS mode too. We don't bother with translation - * from async -> sync PPP. - */ - info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet), - ADDR_SETUP_PROT, - TL_PROTOCOLID_SETUP, - TL_SETUP_SIGNO_INFO_MSG); - if (!info_packet) - goto exit_nomem; - info_packet->header.length = sizeof(struct tl_setup_info_msg); - info_packet->body.driver_type = NDISWAN_DRIVER; - info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION; - info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION; - send_packet(hw, PRIO_SETUP, &info_packet->header); - - /* Initialization is now complete, so we clear the 'to_setup' flag */ - hw->to_setup = 0; - - return; - -exit_nomem: - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": not enough memory to alloc control packet\n"); - hw->to_setup = -1; -} - -static void handle_setup_get_version_rsp(struct ipw_hardware *hw, - unsigned char vers_no) -{ - del_timer(&hw->setup_timer); - hw->initializing = 0; - printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n"); - - if (vers_no == TL_SETUP_VERSION) - __handle_setup_get_version_rsp(hw); - else - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": invalid hardware version no %u\n", - (unsigned int) vers_no); -} - -static void ipw_send_setup_packet(struct ipw_hardware *hw) -{ - struct ipw_setup_get_version_query_packet *ver_packet; - - ver_packet = alloc_ctrl_packet( - sizeof(struct ipw_setup_get_version_query_packet), - ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, - TL_SETUP_SIGNO_GET_VERSION_QRY); - ver_packet->header.length = sizeof(struct tl_setup_get_version_qry); - - /* - * Response is handled in handle_received_SETUP_packet - */ - send_packet(hw, PRIO_SETUP, &ver_packet->header); -} - -static void handle_received_SETUP_packet(struct ipw_hardware *hw, - unsigned int address, - const unsigned char *data, int len, - int is_last) -{ - const union ipw_setup_rx_msg *rx_msg = (const union ipw_setup_rx_msg *) data; - - if (address != ADDR_SETUP_PROT) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": setup packet has bad address %d\n", address); - return; - } - - switch (rx_msg->sig_no) { - case TL_SETUP_SIGNO_GET_VERSION_RSP: - if (hw->to_setup) - handle_setup_get_version_rsp(hw, - rx_msg->version_rsp_msg.version); - break; - - case TL_SETUP_SIGNO_OPEN_MSG: - if (ipwireless_debug) { - unsigned int channel_idx = rx_msg->open_msg.port_no - 1; - - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": OPEN_MSG [channel %u] reply received\n", - channel_idx); - } - break; - - case TL_SETUP_SIGNO_INFO_MSG_ACK: - if (ipwireless_debug) - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME - ": card successfully configured as NDISWAN\n"); - break; - - case TL_SETUP_SIGNO_REBOOT_MSG: - if (hw->to_setup) - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME - ": Setup not completed - ignoring reboot msg\n"); - else { - struct ipw_setup_reboot_msg_ack *packet; - - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME - ": Acknowledging REBOOT message\n"); - packet = alloc_ctrl_packet( - sizeof(struct ipw_setup_reboot_msg_ack), - ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, - TL_SETUP_SIGNO_REBOOT_MSG_ACK); - packet->header.length = - sizeof(struct TlSetupRebootMsgAck); - send_packet(hw, PRIO_SETUP, &packet->header); - if (hw->reboot_callback) - hw->reboot_callback(hw->reboot_callback_data); - } - break; - - default: - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": unknown setup message %u received\n", - (unsigned int) rx_msg->sig_no); - } -} - -static void do_close_hardware(struct ipw_hardware *hw) -{ - unsigned int irqn; - - if (hw->hw_version == HW_VERSION_1) { - /* Disable TX and RX interrupts. */ - outw(0, hw->base_port + IOIER); - - /* Acknowledge any outstanding interrupt requests */ - irqn = inw(hw->base_port + IOIR); - if (irqn & IR_TXINTR) - outw(IR_TXINTR, hw->base_port + IOIR); - if (irqn & IR_RXINTR) - outw(IR_RXINTR, hw->base_port + IOIR); - - synchronize_irq(hw->irq); - } -} - -struct ipw_hardware *ipwireless_hardware_create(void) -{ - int i; - struct ipw_hardware *hw = - kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL); - - if (!hw) - return NULL; - - hw->irq = -1; - hw->initializing = 1; - hw->tx_ready = 1; - hw->rx_bytes_queued = 0; - hw->rx_pool_size = 0; - hw->last_memtx_serial = (unsigned short) 0xffff; - for (i = 0; i < NL_NUM_OF_PRIORITIES; i++) - INIT_LIST_HEAD(&hw->tx_queue[i]); - - INIT_LIST_HEAD(&hw->rx_queue); - INIT_LIST_HEAD(&hw->rx_pool); - spin_lock_init(&hw->lock); - tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw); - INIT_WORK(&hw->work_rx, ipw_receive_data_work); - setup_timer(&hw->setup_timer, ipwireless_setup_timer, - (unsigned long) hw); - - return hw; -} - -void ipwireless_init_hardware_v1(struct ipw_hardware *hw, - unsigned int base_port, - void __iomem *attr_memory, - void __iomem *common_memory, - int is_v2_card, - void (*reboot_callback) (void *data), - void *reboot_callback_data) -{ - if (hw->removed) { - hw->removed = 0; - enable_irq(hw->irq); - } - hw->base_port = base_port; - hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1); - hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2); - hw->memregs_CCR = (struct MEMCCR __iomem *) - ((unsigned short __iomem *) attr_memory + 0x200); - hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory; - hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new; - hw->reboot_callback = reboot_callback; - hw->reboot_callback_data = reboot_callback_data; -} - -void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw) -{ - hw->initializing = 1; - hw->init_loops = 0; - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": waiting for card to start up...\n"); - ipwireless_setup_timer((unsigned long) hw); -} - -static void ipwireless_setup_timer(unsigned long data) -{ - struct ipw_hardware *hw = (struct ipw_hardware *) data; - - hw->init_loops++; - - if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY && - hw->hw_version == HW_VERSION_2 && - hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": failed to startup using TX2, trying TX\n"); - - hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old; - hw->init_loops = 0; - } - /* Give up after a certain number of retries */ - if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) { - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": card failed to start up!\n"); - hw->initializing = 0; - } else { - /* Do not attempt to write to the board if it is not present. */ - if (is_card_present(hw)) { - unsigned long flags; - - spin_lock_irqsave(&hw->lock, flags); - hw->to_setup = 1; - hw->tx_ready = 1; - spin_unlock_irqrestore(&hw->lock, flags); - tasklet_schedule(&hw->tasklet); - } - - mod_timer(&hw->setup_timer, - jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO)); - } -} - -/* - * Stop any interrupts from executing so that, once this function returns, - * other layers of the driver can be sure they won't get any more callbacks. - * Thus must be called on a proper process context. - */ -void ipwireless_stop_interrupts(struct ipw_hardware *hw) -{ - if (!hw->shutting_down) { - /* Tell everyone we are going down. */ - hw->shutting_down = 1; - del_timer(&hw->setup_timer); - - /* Prevent the hardware from sending any more interrupts */ - do_close_hardware(hw); - } -} - -void ipwireless_hardware_free(struct ipw_hardware *hw) -{ - int i; - struct ipw_rx_packet *rp, *rq; - struct ipw_tx_packet *tp, *tq; - - ipwireless_stop_interrupts(hw); - - flush_work_sync(&hw->work_rx); - - for (i = 0; i < NL_NUM_OF_ADDRESSES; i++) - if (hw->packet_assembler[i] != NULL) - kfree(hw->packet_assembler[i]); - - for (i = 0; i < NL_NUM_OF_PRIORITIES; i++) - list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) { - list_del(&tp->queue); - kfree(tp); - } - - list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) { - list_del(&rp->queue); - kfree(rp); - } - - list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) { - list_del(&rp->queue); - kfree(rp); - } - kfree(hw); -} - -/* - * Associate the specified network with this hardware, so it will receive events - * from it. - */ -void ipwireless_associate_network(struct ipw_hardware *hw, - struct ipw_network *network) -{ - hw->network = network; -} diff --git a/drivers/char/pcmcia/ipwireless/hardware.h b/drivers/char/pcmcia/ipwireless/hardware.h deleted file mode 100644 index 90a8590e43b0..000000000000 --- a/drivers/char/pcmcia/ipwireless/hardware.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#ifndef _IPWIRELESS_CS_HARDWARE_H_ -#define _IPWIRELESS_CS_HARDWARE_H_ - -#include -#include -#include - -#define IPW_CONTROL_LINE_CTS 0x0001 -#define IPW_CONTROL_LINE_DCD 0x0002 -#define IPW_CONTROL_LINE_DSR 0x0004 -#define IPW_CONTROL_LINE_RI 0x0008 -#define IPW_CONTROL_LINE_DTR 0x0010 -#define IPW_CONTROL_LINE_RTS 0x0020 - -struct ipw_hardware; -struct ipw_network; - -struct ipw_hardware *ipwireless_hardware_create(void); -void ipwireless_hardware_free(struct ipw_hardware *hw); -irqreturn_t ipwireless_interrupt(int irq, void *dev_id); -int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx, - int state); -int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx, - int state); -int ipwireless_send_packet(struct ipw_hardware *hw, - unsigned int channel_idx, - const unsigned char *data, - unsigned int length, - void (*packet_sent_callback) (void *cb, - unsigned int length), - void *sent_cb_data); -void ipwireless_associate_network(struct ipw_hardware *hw, - struct ipw_network *net); -void ipwireless_stop_interrupts(struct ipw_hardware *hw); -void ipwireless_init_hardware_v1(struct ipw_hardware *hw, - unsigned int base_port, - void __iomem *attr_memory, - void __iomem *common_memory, - int is_v2_card, - void (*reboot_cb) (void *data), - void *reboot_cb_data); -void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw); -void ipwireless_sleep(unsigned int tenths); - -#endif diff --git a/drivers/char/pcmcia/ipwireless/main.c b/drivers/char/pcmcia/ipwireless/main.c deleted file mode 100644 index 94b8eb4d691d..000000000000 --- a/drivers/char/pcmcia/ipwireless/main.c +++ /dev/null @@ -1,335 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#include "hardware.h" -#include "network.h" -#include "main.h" -#include "tty.h" - -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -static struct pcmcia_device_id ipw_ids[] = { - PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100), - PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200), - PCMCIA_DEVICE_NULL -}; -MODULE_DEVICE_TABLE(pcmcia, ipw_ids); - -static void ipwireless_detach(struct pcmcia_device *link); - -/* - * Module params - */ -/* Debug mode: more verbose, print sent/recv bytes */ -int ipwireless_debug; -int ipwireless_loopback; -int ipwireless_out_queue = 10; - -module_param_named(debug, ipwireless_debug, int, 0); -module_param_named(loopback, ipwireless_loopback, int, 0); -module_param_named(out_queue, ipwireless_out_queue, int, 0); -MODULE_PARM_DESC(debug, "switch on debug messages [0]"); -MODULE_PARM_DESC(loopback, - "debug: enable ras_raw channel [0]"); -MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]"); - -/* Executes in process context. */ -static void signalled_reboot_work(struct work_struct *work_reboot) -{ - struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev, - work_reboot); - struct pcmcia_device *link = ipw->link; - pcmcia_reset_card(link->socket); -} - -static void signalled_reboot_callback(void *callback_data) -{ - struct ipw_dev *ipw = (struct ipw_dev *) callback_data; - - /* Delegate to process context. */ - schedule_work(&ipw->work_reboot); -} - -static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data) -{ - struct ipw_dev *ipw = priv_data; - struct resource *io_resource; - int ret; - - p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; - p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; - - /* 0x40 causes it to generate level mode interrupts. */ - /* 0x04 enables IREQ pin. */ - p_dev->config_index |= 0x44; - p_dev->io_lines = 16; - ret = pcmcia_request_io(p_dev); - if (ret) - return ret; - - io_resource = request_region(p_dev->resource[0]->start, - resource_size(p_dev->resource[0]), - IPWIRELESS_PCCARD_NAME); - - p_dev->resource[2]->flags |= - WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE; - - ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0); - if (ret != 0) - goto exit1; - - ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr); - if (ret != 0) - goto exit2; - - ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100; - - ipw->attr_memory = ioremap(p_dev->resource[2]->start, - resource_size(p_dev->resource[2])); - request_mem_region(p_dev->resource[2]->start, - resource_size(p_dev->resource[2]), - IPWIRELESS_PCCARD_NAME); - - p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | - WIN_ENABLE; - p_dev->resource[3]->end = 0; /* this used to be 0x1000 */ - ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0); - if (ret != 0) - goto exit2; - - ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0); - if (ret != 0) - goto exit3; - - ipw->attr_memory = ioremap(p_dev->resource[3]->start, - resource_size(p_dev->resource[3])); - request_mem_region(p_dev->resource[3]->start, - resource_size(p_dev->resource[3]), - IPWIRELESS_PCCARD_NAME); - - return 0; - -exit3: -exit2: - if (ipw->common_memory) { - release_mem_region(p_dev->resource[2]->start, - resource_size(p_dev->resource[2])); - iounmap(ipw->common_memory); - } -exit1: - release_resource(io_resource); - pcmcia_disable_device(p_dev); - return -1; -} - -static int config_ipwireless(struct ipw_dev *ipw) -{ - struct pcmcia_device *link = ipw->link; - int ret = 0; - - ipw->is_v2_card = 0; - link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM | - CONF_ENABLE_IRQ; - - ret = pcmcia_loop_config(link, ipwireless_probe, ipw); - if (ret != 0) - return ret; - - INIT_WORK(&ipw->work_reboot, signalled_reboot_work); - - ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start, - ipw->attr_memory, ipw->common_memory, - ipw->is_v2_card, signalled_reboot_callback, - ipw); - - ret = pcmcia_request_irq(link, ipwireless_interrupt); - if (ret != 0) - goto exit; - - printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n", - ipw->is_v2_card ? "V2/V3" : "V1"); - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": I/O ports %pR, irq %d\n", link->resource[0], - (unsigned int) link->irq); - if (ipw->attr_memory && ipw->common_memory) - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": attr memory %pR, common memory %pR\n", - link->resource[3], - link->resource[2]); - - ipw->network = ipwireless_network_create(ipw->hardware); - if (!ipw->network) - goto exit; - - ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network); - if (!ipw->tty) - goto exit; - - ipwireless_init_hardware_v2_v3(ipw->hardware); - - /* - * Do the RequestConfiguration last, because it enables interrupts. - * Then we don't get any interrupts before we're ready for them. - */ - ret = pcmcia_enable_device(link); - if (ret != 0) - goto exit; - - return 0; - -exit: - if (ipw->common_memory) { - release_mem_region(link->resource[2]->start, - resource_size(link->resource[2])); - iounmap(ipw->common_memory); - } - if (ipw->attr_memory) { - release_mem_region(link->resource[3]->start, - resource_size(link->resource[3])); - iounmap(ipw->attr_memory); - } - pcmcia_disable_device(link); - return -1; -} - -static void release_ipwireless(struct ipw_dev *ipw) -{ - if (ipw->common_memory) { - release_mem_region(ipw->link->resource[2]->start, - resource_size(ipw->link->resource[2])); - iounmap(ipw->common_memory); - } - if (ipw->attr_memory) { - release_mem_region(ipw->link->resource[3]->start, - resource_size(ipw->link->resource[3])); - iounmap(ipw->attr_memory); - } - pcmcia_disable_device(ipw->link); -} - -/* - * ipwireless_attach() creates an "instance" of the driver, allocating - * local data structures for one device (one interface). The device - * is registered with Card Services. - * - * The pcmcia_device structure is initialized, but we don't actually - * configure the card at this point -- we wait until we receive a - * card insertion event. - */ -static int ipwireless_attach(struct pcmcia_device *link) -{ - struct ipw_dev *ipw; - int ret; - - ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL); - if (!ipw) - return -ENOMEM; - - ipw->link = link; - link->priv = ipw; - - ipw->hardware = ipwireless_hardware_create(); - if (!ipw->hardware) { - kfree(ipw); - return -ENOMEM; - } - /* RegisterClient will call config_ipwireless */ - - ret = config_ipwireless(ipw); - - if (ret != 0) { - ipwireless_detach(link); - return ret; - } - - return 0; -} - -/* - * This deletes a driver "instance". The device is de-registered with - * Card Services. If it has been released, all local data structures - * are freed. Otherwise, the structures will be freed when the device - * is released. - */ -static void ipwireless_detach(struct pcmcia_device *link) -{ - struct ipw_dev *ipw = link->priv; - - release_ipwireless(ipw); - - if (ipw->tty != NULL) - ipwireless_tty_free(ipw->tty); - if (ipw->network != NULL) - ipwireless_network_free(ipw->network); - if (ipw->hardware != NULL) - ipwireless_hardware_free(ipw->hardware); - kfree(ipw); -} - -static struct pcmcia_driver me = { - .owner = THIS_MODULE, - .probe = ipwireless_attach, - .remove = ipwireless_detach, - .name = IPWIRELESS_PCCARD_NAME, - .id_table = ipw_ids -}; - -/* - * Module insertion : initialisation of the module. - * Register the card with cardmgr... - */ -static int __init init_ipwireless(void) -{ - int ret; - - ret = ipwireless_tty_init(); - if (ret != 0) - return ret; - - ret = pcmcia_register_driver(&me); - if (ret != 0) - ipwireless_tty_release(); - - return ret; -} - -/* - * Module removal - */ -static void __exit exit_ipwireless(void) -{ - pcmcia_unregister_driver(&me); - ipwireless_tty_release(); -} - -module_init(init_ipwireless); -module_exit(exit_ipwireless); - -MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR); -MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION); -MODULE_LICENSE("GPL"); diff --git a/drivers/char/pcmcia/ipwireless/main.h b/drivers/char/pcmcia/ipwireless/main.h deleted file mode 100644 index f2cbb116bccb..000000000000 --- a/drivers/char/pcmcia/ipwireless/main.h +++ /dev/null @@ -1,68 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#ifndef _IPWIRELESS_CS_H_ -#define _IPWIRELESS_CS_H_ - -#include -#include - -#include -#include - -#include "hardware.h" - -#define IPWIRELESS_PCCARD_NAME "ipwireless" -#define IPWIRELESS_PCMCIA_VERSION "1.1" -#define IPWIRELESS_PCMCIA_AUTHOR \ - "Stephen Blackheath, Ben Martel, Jiri Kosina and David Sterba" - -#define IPWIRELESS_TX_QUEUE_SIZE 262144 -#define IPWIRELESS_RX_QUEUE_SIZE 262144 - -#define IPWIRELESS_STATE_DEBUG - -struct ipw_hardware; -struct ipw_network; -struct ipw_tty; - -struct ipw_dev { - struct pcmcia_device *link; - int is_v2_card; - - void __iomem *attr_memory; - - void __iomem *common_memory; - - /* Reference to attribute memory, containing CIS data */ - void *attribute_memory; - - /* Hardware context */ - struct ipw_hardware *hardware; - /* Network layer context */ - struct ipw_network *network; - /* TTY device context */ - struct ipw_tty *tty; - struct work_struct work_reboot; -}; - -/* Module parametres */ -extern int ipwireless_debug; -extern int ipwireless_loopback; -extern int ipwireless_out_queue; - -#endif diff --git a/drivers/char/pcmcia/ipwireless/network.c b/drivers/char/pcmcia/ipwireless/network.c deleted file mode 100644 index f7daeea598e4..000000000000 --- a/drivers/char/pcmcia/ipwireless/network.c +++ /dev/null @@ -1,508 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "network.h" -#include "hardware.h" -#include "main.h" -#include "tty.h" - -#define MAX_ASSOCIATED_TTYS 2 - -#define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP) - -struct ipw_network { - /* Hardware context, used for calls to hardware layer. */ - struct ipw_hardware *hardware; - /* Context for kernel 'generic_ppp' functionality */ - struct ppp_channel *ppp_channel; - /* tty context connected with IPW console */ - struct ipw_tty *associated_ttys[NO_OF_IPW_CHANNELS][MAX_ASSOCIATED_TTYS]; - /* True if ppp needs waking up once we're ready to xmit */ - int ppp_blocked; - /* Number of packets queued up in hardware module. */ - int outgoing_packets_queued; - /* Spinlock to avoid interrupts during shutdown */ - spinlock_t lock; - struct mutex close_lock; - - /* PPP ioctl data, not actually used anywere */ - unsigned int flags; - unsigned int rbits; - u32 xaccm[8]; - u32 raccm; - int mru; - - int shutting_down; - unsigned int ras_control_lines; - - struct work_struct work_go_online; - struct work_struct work_go_offline; -}; - -static void notify_packet_sent(void *callback_data, unsigned int packet_length) -{ - struct ipw_network *network = callback_data; - unsigned long flags; - - spin_lock_irqsave(&network->lock, flags); - network->outgoing_packets_queued--; - if (network->ppp_channel != NULL) { - if (network->ppp_blocked) { - network->ppp_blocked = 0; - spin_unlock_irqrestore(&network->lock, flags); - ppp_output_wakeup(network->ppp_channel); - if (ipwireless_debug) - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME - ": ppp unblocked\n"); - } else - spin_unlock_irqrestore(&network->lock, flags); - } else - spin_unlock_irqrestore(&network->lock, flags); -} - -/* - * Called by the ppp system when it has a packet to send to the hardware. - */ -static int ipwireless_ppp_start_xmit(struct ppp_channel *ppp_channel, - struct sk_buff *skb) -{ - struct ipw_network *network = ppp_channel->private; - unsigned long flags; - - spin_lock_irqsave(&network->lock, flags); - if (network->outgoing_packets_queued < ipwireless_out_queue) { - unsigned char *buf; - static unsigned char header[] = { - PPP_ALLSTATIONS, /* 0xff */ - PPP_UI, /* 0x03 */ - }; - int ret; - - network->outgoing_packets_queued++; - spin_unlock_irqrestore(&network->lock, flags); - - /* - * If we have the requested amount of headroom in the skb we - * were handed, then we can add the header efficiently. - */ - if (skb_headroom(skb) >= 2) { - memcpy(skb_push(skb, 2), header, 2); - ret = ipwireless_send_packet(network->hardware, - IPW_CHANNEL_RAS, skb->data, - skb->len, - notify_packet_sent, - network); - if (ret == -1) { - skb_pull(skb, 2); - return 0; - } - } else { - /* Otherwise (rarely) we do it inefficiently. */ - buf = kmalloc(skb->len + 2, GFP_ATOMIC); - if (!buf) - return 0; - memcpy(buf + 2, skb->data, skb->len); - memcpy(buf, header, 2); - ret = ipwireless_send_packet(network->hardware, - IPW_CHANNEL_RAS, buf, - skb->len + 2, - notify_packet_sent, - network); - kfree(buf); - if (ret == -1) - return 0; - } - kfree_skb(skb); - return 1; - } else { - /* - * Otherwise reject the packet, and flag that the ppp system - * needs to be unblocked once we are ready to send. - */ - network->ppp_blocked = 1; - spin_unlock_irqrestore(&network->lock, flags); - if (ipwireless_debug) - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": ppp blocked\n"); - return 0; - } -} - -/* Handle an ioctl call that has come in via ppp. (copy of ppp_async_ioctl() */ -static int ipwireless_ppp_ioctl(struct ppp_channel *ppp_channel, - unsigned int cmd, unsigned long arg) -{ - struct ipw_network *network = ppp_channel->private; - int err, val; - u32 accm[8]; - int __user *user_arg = (int __user *) arg; - - err = -EFAULT; - switch (cmd) { - case PPPIOCGFLAGS: - val = network->flags | network->rbits; - if (put_user(val, user_arg)) - break; - err = 0; - break; - - case PPPIOCSFLAGS: - if (get_user(val, user_arg)) - break; - network->flags = val & ~SC_RCV_BITS; - network->rbits = val & SC_RCV_BITS; - err = 0; - break; - - case PPPIOCGASYNCMAP: - if (put_user(network->xaccm[0], user_arg)) - break; - err = 0; - break; - - case PPPIOCSASYNCMAP: - if (get_user(network->xaccm[0], user_arg)) - break; - err = 0; - break; - - case PPPIOCGRASYNCMAP: - if (put_user(network->raccm, user_arg)) - break; - err = 0; - break; - - case PPPIOCSRASYNCMAP: - if (get_user(network->raccm, user_arg)) - break; - err = 0; - break; - - case PPPIOCGXASYNCMAP: - if (copy_to_user((void __user *) arg, network->xaccm, - sizeof(network->xaccm))) - break; - err = 0; - break; - - case PPPIOCSXASYNCMAP: - if (copy_from_user(accm, (void __user *) arg, sizeof(accm))) - break; - accm[2] &= ~0x40000000U; /* can't escape 0x5e */ - accm[3] |= 0x60000000U; /* must escape 0x7d, 0x7e */ - memcpy(network->xaccm, accm, sizeof(network->xaccm)); - err = 0; - break; - - case PPPIOCGMRU: - if (put_user(network->mru, user_arg)) - break; - err = 0; - break; - - case PPPIOCSMRU: - if (get_user(val, user_arg)) - break; - if (val < PPP_MRU) - val = PPP_MRU; - network->mru = val; - err = 0; - break; - - default: - err = -ENOTTY; - } - - return err; -} - -static const struct ppp_channel_ops ipwireless_ppp_channel_ops = { - .start_xmit = ipwireless_ppp_start_xmit, - .ioctl = ipwireless_ppp_ioctl -}; - -static void do_go_online(struct work_struct *work_go_online) -{ - struct ipw_network *network = - container_of(work_go_online, struct ipw_network, - work_go_online); - unsigned long flags; - - spin_lock_irqsave(&network->lock, flags); - if (!network->ppp_channel) { - struct ppp_channel *channel; - - spin_unlock_irqrestore(&network->lock, flags); - channel = kzalloc(sizeof(struct ppp_channel), GFP_KERNEL); - if (!channel) { - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": unable to allocate PPP channel\n"); - return; - } - channel->private = network; - channel->mtu = 16384; /* Wild guess */ - channel->hdrlen = 2; - channel->ops = &ipwireless_ppp_channel_ops; - - network->flags = 0; - network->rbits = 0; - network->mru = PPP_MRU; - memset(network->xaccm, 0, sizeof(network->xaccm)); - network->xaccm[0] = ~0U; - network->xaccm[3] = 0x60000000U; - network->raccm = ~0U; - ppp_register_channel(channel); - spin_lock_irqsave(&network->lock, flags); - network->ppp_channel = channel; - } - spin_unlock_irqrestore(&network->lock, flags); -} - -static void do_go_offline(struct work_struct *work_go_offline) -{ - struct ipw_network *network = - container_of(work_go_offline, struct ipw_network, - work_go_offline); - unsigned long flags; - - mutex_lock(&network->close_lock); - spin_lock_irqsave(&network->lock, flags); - if (network->ppp_channel != NULL) { - struct ppp_channel *channel = network->ppp_channel; - - network->ppp_channel = NULL; - spin_unlock_irqrestore(&network->lock, flags); - mutex_unlock(&network->close_lock); - ppp_unregister_channel(channel); - } else { - spin_unlock_irqrestore(&network->lock, flags); - mutex_unlock(&network->close_lock); - } -} - -void ipwireless_network_notify_control_line_change(struct ipw_network *network, - unsigned int channel_idx, - unsigned int control_lines, - unsigned int changed_mask) -{ - int i; - - if (channel_idx == IPW_CHANNEL_RAS) - network->ras_control_lines = control_lines; - - for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) { - struct ipw_tty *tty = - network->associated_ttys[channel_idx][i]; - - /* - * If it's associated with a tty (other than the RAS channel - * when we're online), then send the data to that tty. The RAS - * channel's data is handled above - it always goes through - * ppp_generic. - */ - if (tty) - ipwireless_tty_notify_control_line_change(tty, - channel_idx, - control_lines, - changed_mask); - } -} - -/* - * Some versions of firmware stuff packets with 0xff 0x03 (PPP: ALLSTATIONS, UI) - * bytes, which are required on sent packet, but not always present on received - * packets - */ -static struct sk_buff *ipw_packet_received_skb(unsigned char *data, - unsigned int length) -{ - struct sk_buff *skb; - - if (length > 2 && data[0] == PPP_ALLSTATIONS && data[1] == PPP_UI) { - length -= 2; - data += 2; - } - - skb = dev_alloc_skb(length + 4); - skb_reserve(skb, 2); - memcpy(skb_put(skb, length), data, length); - - return skb; -} - -void ipwireless_network_packet_received(struct ipw_network *network, - unsigned int channel_idx, - unsigned char *data, - unsigned int length) -{ - int i; - unsigned long flags; - - for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) { - struct ipw_tty *tty = network->associated_ttys[channel_idx][i]; - - if (!tty) - continue; - - /* - * If it's associated with a tty (other than the RAS channel - * when we're online), then send the data to that tty. The RAS - * channel's data is handled above - it always goes through - * ppp_generic. - */ - if (channel_idx == IPW_CHANNEL_RAS - && (network->ras_control_lines & - IPW_CONTROL_LINE_DCD) != 0 - && ipwireless_tty_is_modem(tty)) { - /* - * If data came in on the RAS channel and this tty is - * the modem tty, and we are online, then we send it to - * the PPP layer. - */ - mutex_lock(&network->close_lock); - spin_lock_irqsave(&network->lock, flags); - if (network->ppp_channel != NULL) { - struct sk_buff *skb; - - spin_unlock_irqrestore(&network->lock, - flags); - - /* Send the data to the ppp_generic module. */ - skb = ipw_packet_received_skb(data, length); - ppp_input(network->ppp_channel, skb); - } else - spin_unlock_irqrestore(&network->lock, - flags); - mutex_unlock(&network->close_lock); - } - /* Otherwise we send it out the tty. */ - else - ipwireless_tty_received(tty, data, length); - } -} - -struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw) -{ - struct ipw_network *network = - kzalloc(sizeof(struct ipw_network), GFP_ATOMIC); - - if (!network) - return NULL; - - spin_lock_init(&network->lock); - mutex_init(&network->close_lock); - - network->hardware = hw; - - INIT_WORK(&network->work_go_online, do_go_online); - INIT_WORK(&network->work_go_offline, do_go_offline); - - ipwireless_associate_network(hw, network); - - return network; -} - -void ipwireless_network_free(struct ipw_network *network) -{ - network->shutting_down = 1; - - ipwireless_ppp_close(network); - flush_work_sync(&network->work_go_online); - flush_work_sync(&network->work_go_offline); - - ipwireless_stop_interrupts(network->hardware); - ipwireless_associate_network(network->hardware, NULL); - - kfree(network); -} - -void ipwireless_associate_network_tty(struct ipw_network *network, - unsigned int channel_idx, - struct ipw_tty *tty) -{ - int i; - - for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) - if (network->associated_ttys[channel_idx][i] == NULL) { - network->associated_ttys[channel_idx][i] = tty; - break; - } -} - -void ipwireless_disassociate_network_ttys(struct ipw_network *network, - unsigned int channel_idx) -{ - int i; - - for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) - network->associated_ttys[channel_idx][i] = NULL; -} - -void ipwireless_ppp_open(struct ipw_network *network) -{ - if (ipwireless_debug) - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": online\n"); - schedule_work(&network->work_go_online); -} - -void ipwireless_ppp_close(struct ipw_network *network) -{ - /* Disconnect from the wireless network. */ - if (ipwireless_debug) - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": offline\n"); - schedule_work(&network->work_go_offline); -} - -int ipwireless_ppp_channel_index(struct ipw_network *network) -{ - int ret = -1; - unsigned long flags; - - spin_lock_irqsave(&network->lock, flags); - if (network->ppp_channel != NULL) - ret = ppp_channel_index(network->ppp_channel); - spin_unlock_irqrestore(&network->lock, flags); - - return ret; -} - -int ipwireless_ppp_unit_number(struct ipw_network *network) -{ - int ret = -1; - unsigned long flags; - - spin_lock_irqsave(&network->lock, flags); - if (network->ppp_channel != NULL) - ret = ppp_unit_number(network->ppp_channel); - spin_unlock_irqrestore(&network->lock, flags); - - return ret; -} - -int ipwireless_ppp_mru(const struct ipw_network *network) -{ - return network->mru; -} diff --git a/drivers/char/pcmcia/ipwireless/network.h b/drivers/char/pcmcia/ipwireless/network.h deleted file mode 100644 index 561f765b3334..000000000000 --- a/drivers/char/pcmcia/ipwireless/network.h +++ /dev/null @@ -1,53 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#ifndef _IPWIRELESS_CS_NETWORK_H_ -#define _IPWIRELESS_CS_NETWORK_H_ - -#include - -struct ipw_network; -struct ipw_tty; -struct ipw_hardware; - -/* Definitions of the different channels on the PCMCIA UE */ -#define IPW_CHANNEL_RAS 0 -#define IPW_CHANNEL_DIALLER 1 -#define IPW_CHANNEL_CONSOLE 2 -#define NO_OF_IPW_CHANNELS 5 - -void ipwireless_network_notify_control_line_change(struct ipw_network *net, - unsigned int channel_idx, unsigned int control_lines, - unsigned int control_mask); -void ipwireless_network_packet_received(struct ipw_network *net, - unsigned int channel_idx, unsigned char *data, - unsigned int length); -struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw); -void ipwireless_network_free(struct ipw_network *net); -void ipwireless_associate_network_tty(struct ipw_network *net, - unsigned int channel_idx, struct ipw_tty *tty); -void ipwireless_disassociate_network_ttys(struct ipw_network *net, - unsigned int channel_idx); - -void ipwireless_ppp_open(struct ipw_network *net); - -void ipwireless_ppp_close(struct ipw_network *net); -int ipwireless_ppp_channel_index(struct ipw_network *net); -int ipwireless_ppp_unit_number(struct ipw_network *net); -int ipwireless_ppp_mru(const struct ipw_network *net); - -#endif diff --git a/drivers/char/pcmcia/ipwireless/setup_protocol.h b/drivers/char/pcmcia/ipwireless/setup_protocol.h deleted file mode 100644 index 9d6bcc77c73c..000000000000 --- a/drivers/char/pcmcia/ipwireless/setup_protocol.h +++ /dev/null @@ -1,108 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#ifndef _IPWIRELESS_CS_SETUP_PROTOCOL_H_ -#define _IPWIRELESS_CS_SETUP_PROTOCOL_H_ - -/* Version of the setup protocol and transport protocols */ -#define TL_SETUP_VERSION 1 - -#define TL_SETUP_VERSION_QRY_TMO 1000 -#define TL_SETUP_MAX_VERSION_QRY 30 - -/* Message numbers 0-9 are obsoleted and must not be reused! */ -#define TL_SETUP_SIGNO_GET_VERSION_QRY 10 -#define TL_SETUP_SIGNO_GET_VERSION_RSP 11 -#define TL_SETUP_SIGNO_CONFIG_MSG 12 -#define TL_SETUP_SIGNO_CONFIG_DONE_MSG 13 -#define TL_SETUP_SIGNO_OPEN_MSG 14 -#define TL_SETUP_SIGNO_CLOSE_MSG 15 - -#define TL_SETUP_SIGNO_INFO_MSG 20 -#define TL_SETUP_SIGNO_INFO_MSG_ACK 21 - -#define TL_SETUP_SIGNO_REBOOT_MSG 22 -#define TL_SETUP_SIGNO_REBOOT_MSG_ACK 23 - -/* Synchronous start-messages */ -struct tl_setup_get_version_qry { - unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_QRY */ -} __attribute__ ((__packed__)); - -struct tl_setup_get_version_rsp { - unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_RSP */ - unsigned char version; /* TL_SETUP_VERSION */ -} __attribute__ ((__packed__)); - -struct tl_setup_config_msg { - unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_MSG */ - unsigned char port_no; - unsigned char prio_data; - unsigned char prio_ctrl; -} __attribute__ ((__packed__)); - -struct tl_setup_config_done_msg { - unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_DONE_MSG */ -} __attribute__ ((__packed__)); - -/* Asyncronous messages */ -struct tl_setup_open_msg { - unsigned char sig_no; /* TL_SETUP_SIGNO_OPEN_MSG */ - unsigned char port_no; -} __attribute__ ((__packed__)); - -struct tl_setup_close_msg { - unsigned char sig_no; /* TL_SETUP_SIGNO_CLOSE_MSG */ - unsigned char port_no; -} __attribute__ ((__packed__)); - -/* Driver type - for use in tl_setup_info_msg.driver_type */ -#define COMM_DRIVER 0 -#define NDISWAN_DRIVER 1 -#define NDISWAN_DRIVER_MAJOR_VERSION 2 -#define NDISWAN_DRIVER_MINOR_VERSION 0 - -/* - * It should not matter when this message comes over as we just store the - * results and send the ACK. - */ -struct tl_setup_info_msg { - unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG */ - unsigned char driver_type; - unsigned char major_version; - unsigned char minor_version; -} __attribute__ ((__packed__)); - -struct tl_setup_info_msgAck { - unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG_ACK */ -} __attribute__ ((__packed__)); - -struct TlSetupRebootMsgAck { - unsigned char sig_no; /* TL_SETUP_SIGNO_REBOOT_MSG_ACK */ -} __attribute__ ((__packed__)); - -/* Define a union of all the msgs that the driver can receive from the card.*/ -union ipw_setup_rx_msg { - unsigned char sig_no; - struct tl_setup_get_version_rsp version_rsp_msg; - struct tl_setup_open_msg open_msg; - struct tl_setup_close_msg close_msg; - struct tl_setup_info_msg InfoMsg; - struct tl_setup_info_msgAck info_msg_ack; -} __attribute__ ((__packed__)); - -#endif /* _IPWIRELESS_CS_SETUP_PROTOCOL_H_ */ diff --git a/drivers/char/pcmcia/ipwireless/tty.c b/drivers/char/pcmcia/ipwireless/tty.c deleted file mode 100644 index ef92869502a7..000000000000 --- a/drivers/char/pcmcia/ipwireless/tty.c +++ /dev/null @@ -1,679 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "tty.h" -#include "network.h" -#include "hardware.h" -#include "main.h" - -#define IPWIRELESS_PCMCIA_START (0) -#define IPWIRELESS_PCMCIA_MINORS (24) -#define IPWIRELESS_PCMCIA_MINOR_RANGE (8) - -#define TTYTYPE_MODEM (0) -#define TTYTYPE_MONITOR (1) -#define TTYTYPE_RAS_RAW (2) - -struct ipw_tty { - int index; - struct ipw_hardware *hardware; - unsigned int channel_idx; - unsigned int secondary_channel_idx; - int tty_type; - struct ipw_network *network; - struct tty_struct *linux_tty; - int open_count; - unsigned int control_lines; - struct mutex ipw_tty_mutex; - int tx_bytes_queued; - int closing; -}; - -static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS]; - -static struct tty_driver *ipw_tty_driver; - -static char *tty_type_name(int tty_type) -{ - static char *channel_names[] = { - "modem", - "monitor", - "RAS-raw" - }; - - return channel_names[tty_type]; -} - -static void report_registering(struct ipw_tty *tty) -{ - char *iftype = tty_type_name(tty->tty_type); - - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": registering %s device ttyIPWp%d\n", iftype, tty->index); -} - -static void report_deregistering(struct ipw_tty *tty) -{ - char *iftype = tty_type_name(tty->tty_type); - - printk(KERN_INFO IPWIRELESS_PCCARD_NAME - ": deregistering %s device ttyIPWp%d\n", iftype, - tty->index); -} - -static struct ipw_tty *get_tty(int minor) -{ - if (minor < ipw_tty_driver->minor_start - || minor >= ipw_tty_driver->minor_start + - IPWIRELESS_PCMCIA_MINORS) - return NULL; - else { - int minor_offset = minor - ipw_tty_driver->minor_start; - - /* - * The 'ras_raw' channel is only available when 'loopback' mode - * is enabled. - * Number of minor starts with 16 (_RANGE * _RAS_RAW). - */ - if (!ipwireless_loopback && - minor_offset >= - IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW) - return NULL; - - return ttys[minor_offset]; - } -} - -static int ipw_open(struct tty_struct *linux_tty, struct file *filp) -{ - int minor = linux_tty->index; - struct ipw_tty *tty = get_tty(minor); - - if (!tty) - return -ENODEV; - - mutex_lock(&tty->ipw_tty_mutex); - - if (tty->closing) { - mutex_unlock(&tty->ipw_tty_mutex); - return -ENODEV; - } - if (tty->open_count == 0) - tty->tx_bytes_queued = 0; - - tty->open_count++; - - tty->linux_tty = linux_tty; - linux_tty->driver_data = tty; - linux_tty->low_latency = 1; - - if (tty->tty_type == TTYTYPE_MODEM) - ipwireless_ppp_open(tty->network); - - mutex_unlock(&tty->ipw_tty_mutex); - - return 0; -} - -static void do_ipw_close(struct ipw_tty *tty) -{ - tty->open_count--; - - if (tty->open_count == 0) { - struct tty_struct *linux_tty = tty->linux_tty; - - if (linux_tty != NULL) { - tty->linux_tty = NULL; - linux_tty->driver_data = NULL; - - if (tty->tty_type == TTYTYPE_MODEM) - ipwireless_ppp_close(tty->network); - } - } -} - -static void ipw_hangup(struct tty_struct *linux_tty) -{ - struct ipw_tty *tty = linux_tty->driver_data; - - if (!tty) - return; - - mutex_lock(&tty->ipw_tty_mutex); - if (tty->open_count == 0) { - mutex_unlock(&tty->ipw_tty_mutex); - return; - } - - do_ipw_close(tty); - - mutex_unlock(&tty->ipw_tty_mutex); -} - -static void ipw_close(struct tty_struct *linux_tty, struct file *filp) -{ - ipw_hangup(linux_tty); -} - -/* Take data received from hardware, and send it out the tty */ -void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, - unsigned int length) -{ - struct tty_struct *linux_tty; - int work = 0; - - mutex_lock(&tty->ipw_tty_mutex); - linux_tty = tty->linux_tty; - if (linux_tty == NULL) { - mutex_unlock(&tty->ipw_tty_mutex); - return; - } - - if (!tty->open_count) { - mutex_unlock(&tty->ipw_tty_mutex); - return; - } - mutex_unlock(&tty->ipw_tty_mutex); - - work = tty_insert_flip_string(linux_tty, data, length); - - if (work != length) - printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME - ": %d chars not inserted to flip buffer!\n", - length - work); - - /* - * This may sleep if ->low_latency is set - */ - if (work) - tty_flip_buffer_push(linux_tty); -} - -static void ipw_write_packet_sent_callback(void *callback_data, - unsigned int packet_length) -{ - struct ipw_tty *tty = callback_data; - - /* - * Packet has been sent, so we subtract the number of bytes from our - * tally of outstanding TX bytes. - */ - tty->tx_bytes_queued -= packet_length; -} - -static int ipw_write(struct tty_struct *linux_tty, - const unsigned char *buf, int count) -{ - struct ipw_tty *tty = linux_tty->driver_data; - int room, ret; - - if (!tty) - return -ENODEV; - - mutex_lock(&tty->ipw_tty_mutex); - if (!tty->open_count) { - mutex_unlock(&tty->ipw_tty_mutex); - return -EINVAL; - } - - room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; - if (room < 0) - room = 0; - /* Don't allow caller to write any more than we have room for */ - if (count > room) - count = room; - - if (count == 0) { - mutex_unlock(&tty->ipw_tty_mutex); - return 0; - } - - ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS, - buf, count, - ipw_write_packet_sent_callback, tty); - if (ret == -1) { - mutex_unlock(&tty->ipw_tty_mutex); - return 0; - } - - tty->tx_bytes_queued += count; - mutex_unlock(&tty->ipw_tty_mutex); - - return count; -} - -static int ipw_write_room(struct tty_struct *linux_tty) -{ - struct ipw_tty *tty = linux_tty->driver_data; - int room; - - /* FIXME: Exactly how is the tty object locked here .. */ - if (!tty) - return -ENODEV; - - if (!tty->open_count) - return -EINVAL; - - room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; - if (room < 0) - room = 0; - - return room; -} - -static int ipwireless_get_serial_info(struct ipw_tty *tty, - struct serial_struct __user *retinfo) -{ - struct serial_struct tmp; - - if (!retinfo) - return (-EFAULT); - - memset(&tmp, 0, sizeof(tmp)); - tmp.type = PORT_UNKNOWN; - tmp.line = tty->index; - tmp.port = 0; - tmp.irq = 0; - tmp.flags = 0; - tmp.baud_base = 115200; - tmp.close_delay = 0; - tmp.closing_wait = 0; - tmp.custom_divisor = 0; - tmp.hub6 = 0; - if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) - return -EFAULT; - - return 0; -} - -static int ipw_chars_in_buffer(struct tty_struct *linux_tty) -{ - struct ipw_tty *tty = linux_tty->driver_data; - - if (!tty) - return 0; - - if (!tty->open_count) - return 0; - - return tty->tx_bytes_queued; -} - -static int get_control_lines(struct ipw_tty *tty) -{ - unsigned int my = tty->control_lines; - unsigned int out = 0; - - if (my & IPW_CONTROL_LINE_RTS) - out |= TIOCM_RTS; - if (my & IPW_CONTROL_LINE_DTR) - out |= TIOCM_DTR; - if (my & IPW_CONTROL_LINE_CTS) - out |= TIOCM_CTS; - if (my & IPW_CONTROL_LINE_DSR) - out |= TIOCM_DSR; - if (my & IPW_CONTROL_LINE_DCD) - out |= TIOCM_CD; - - return out; -} - -static int set_control_lines(struct ipw_tty *tty, unsigned int set, - unsigned int clear) -{ - int ret; - - if (set & TIOCM_RTS) { - ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1); - if (ret) - return ret; - if (tty->secondary_channel_idx != -1) { - ret = ipwireless_set_RTS(tty->hardware, - tty->secondary_channel_idx, 1); - if (ret) - return ret; - } - } - if (set & TIOCM_DTR) { - ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1); - if (ret) - return ret; - if (tty->secondary_channel_idx != -1) { - ret = ipwireless_set_DTR(tty->hardware, - tty->secondary_channel_idx, 1); - if (ret) - return ret; - } - } - if (clear & TIOCM_RTS) { - ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0); - if (tty->secondary_channel_idx != -1) { - ret = ipwireless_set_RTS(tty->hardware, - tty->secondary_channel_idx, 0); - if (ret) - return ret; - } - } - if (clear & TIOCM_DTR) { - ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0); - if (tty->secondary_channel_idx != -1) { - ret = ipwireless_set_DTR(tty->hardware, - tty->secondary_channel_idx, 0); - if (ret) - return ret; - } - } - return 0; -} - -static int ipw_tiocmget(struct tty_struct *linux_tty) -{ - struct ipw_tty *tty = linux_tty->driver_data; - /* FIXME: Exactly how is the tty object locked here .. */ - - if (!tty) - return -ENODEV; - - if (!tty->open_count) - return -EINVAL; - - return get_control_lines(tty); -} - -static int -ipw_tiocmset(struct tty_struct *linux_tty, - unsigned int set, unsigned int clear) -{ - struct ipw_tty *tty = linux_tty->driver_data; - /* FIXME: Exactly how is the tty object locked here .. */ - - if (!tty) - return -ENODEV; - - if (!tty->open_count) - return -EINVAL; - - return set_control_lines(tty, set, clear); -} - -static int ipw_ioctl(struct tty_struct *linux_tty, - unsigned int cmd, unsigned long arg) -{ - struct ipw_tty *tty = linux_tty->driver_data; - - if (!tty) - return -ENODEV; - - if (!tty->open_count) - return -EINVAL; - - /* FIXME: Exactly how is the tty object locked here .. */ - - switch (cmd) { - case TIOCGSERIAL: - return ipwireless_get_serial_info(tty, (void __user *) arg); - - case TIOCSSERIAL: - return 0; /* Keeps the PCMCIA scripts happy. */ - } - - if (tty->tty_type == TTYTYPE_MODEM) { - switch (cmd) { - case PPPIOCGCHAN: - { - int chan = ipwireless_ppp_channel_index( - tty->network); - - if (chan < 0) - return -ENODEV; - if (put_user(chan, (int __user *) arg)) - return -EFAULT; - } - return 0; - - case PPPIOCGUNIT: - { - int unit = ipwireless_ppp_unit_number( - tty->network); - - if (unit < 0) - return -ENODEV; - if (put_user(unit, (int __user *) arg)) - return -EFAULT; - } - return 0; - - case FIONREAD: - { - int val = 0; - - if (put_user(val, (int __user *) arg)) - return -EFAULT; - } - return 0; - case TCFLSH: - return tty_perform_flush(linux_tty, arg); - } - } - return -ENOIOCTLCMD; -} - -static int add_tty(int j, - struct ipw_hardware *hardware, - struct ipw_network *network, int channel_idx, - int secondary_channel_idx, int tty_type) -{ - ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL); - if (!ttys[j]) - return -ENOMEM; - ttys[j]->index = j; - ttys[j]->hardware = hardware; - ttys[j]->channel_idx = channel_idx; - ttys[j]->secondary_channel_idx = secondary_channel_idx; - ttys[j]->network = network; - ttys[j]->tty_type = tty_type; - mutex_init(&ttys[j]->ipw_tty_mutex); - - tty_register_device(ipw_tty_driver, j, NULL); - ipwireless_associate_network_tty(network, channel_idx, ttys[j]); - - if (secondary_channel_idx != -1) - ipwireless_associate_network_tty(network, - secondary_channel_idx, - ttys[j]); - if (get_tty(j + ipw_tty_driver->minor_start) == ttys[j]) - report_registering(ttys[j]); - return 0; -} - -struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware, - struct ipw_network *network) -{ - int i, j; - - for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) { - int allfree = 1; - - for (j = i; j < IPWIRELESS_PCMCIA_MINORS; - j += IPWIRELESS_PCMCIA_MINOR_RANGE) - if (ttys[j] != NULL) { - allfree = 0; - break; - } - - if (allfree) { - j = i; - - if (add_tty(j, hardware, network, - IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS, - TTYTYPE_MODEM)) - return NULL; - - j += IPWIRELESS_PCMCIA_MINOR_RANGE; - if (add_tty(j, hardware, network, - IPW_CHANNEL_DIALLER, -1, - TTYTYPE_MONITOR)) - return NULL; - - j += IPWIRELESS_PCMCIA_MINOR_RANGE; - if (add_tty(j, hardware, network, - IPW_CHANNEL_RAS, -1, - TTYTYPE_RAS_RAW)) - return NULL; - - return ttys[i]; - } - } - return NULL; -} - -/* - * Must be called before ipwireless_network_free(). - */ -void ipwireless_tty_free(struct ipw_tty *tty) -{ - int j; - struct ipw_network *network = ttys[tty->index]->network; - - for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS; - j += IPWIRELESS_PCMCIA_MINOR_RANGE) { - struct ipw_tty *ttyj = ttys[j]; - - if (ttyj) { - mutex_lock(&ttyj->ipw_tty_mutex); - if (get_tty(j + ipw_tty_driver->minor_start) == ttyj) - report_deregistering(ttyj); - ttyj->closing = 1; - if (ttyj->linux_tty != NULL) { - mutex_unlock(&ttyj->ipw_tty_mutex); - tty_hangup(ttyj->linux_tty); - /* Wait till the tty_hangup has completed */ - flush_work_sync(&ttyj->linux_tty->hangup_work); - /* FIXME: Exactly how is the tty object locked here - against a parallel ioctl etc */ - mutex_lock(&ttyj->ipw_tty_mutex); - } - while (ttyj->open_count) - do_ipw_close(ttyj); - ipwireless_disassociate_network_ttys(network, - ttyj->channel_idx); - tty_unregister_device(ipw_tty_driver, j); - ttys[j] = NULL; - mutex_unlock(&ttyj->ipw_tty_mutex); - kfree(ttyj); - } - } -} - -static const struct tty_operations tty_ops = { - .open = ipw_open, - .close = ipw_close, - .hangup = ipw_hangup, - .write = ipw_write, - .write_room = ipw_write_room, - .ioctl = ipw_ioctl, - .chars_in_buffer = ipw_chars_in_buffer, - .tiocmget = ipw_tiocmget, - .tiocmset = ipw_tiocmset, -}; - -int ipwireless_tty_init(void) -{ - int result; - - ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS); - if (!ipw_tty_driver) - return -ENOMEM; - - ipw_tty_driver->owner = THIS_MODULE; - ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME; - ipw_tty_driver->name = "ttyIPWp"; - ipw_tty_driver->major = 0; - ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START; - ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; - ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL; - ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - ipw_tty_driver->init_termios = tty_std_termios; - ipw_tty_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - ipw_tty_driver->init_termios.c_ispeed = 9600; - ipw_tty_driver->init_termios.c_ospeed = 9600; - tty_set_operations(ipw_tty_driver, &tty_ops); - result = tty_register_driver(ipw_tty_driver); - if (result) { - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": failed to register tty driver\n"); - put_tty_driver(ipw_tty_driver); - return result; - } - - return 0; -} - -void ipwireless_tty_release(void) -{ - int ret; - - ret = tty_unregister_driver(ipw_tty_driver); - put_tty_driver(ipw_tty_driver); - if (ret != 0) - printk(KERN_ERR IPWIRELESS_PCCARD_NAME - ": tty_unregister_driver failed with code %d\n", ret); -} - -int ipwireless_tty_is_modem(struct ipw_tty *tty) -{ - return tty->tty_type == TTYTYPE_MODEM; -} - -void -ipwireless_tty_notify_control_line_change(struct ipw_tty *tty, - unsigned int channel_idx, - unsigned int control_lines, - unsigned int changed_mask) -{ - unsigned int old_control_lines = tty->control_lines; - - tty->control_lines = (tty->control_lines & ~changed_mask) - | (control_lines & changed_mask); - - /* - * If DCD is de-asserted, we close the tty so pppd can tell that we - * have gone offline. - */ - if ((old_control_lines & IPW_CONTROL_LINE_DCD) - && !(tty->control_lines & IPW_CONTROL_LINE_DCD) - && tty->linux_tty) { - tty_hangup(tty->linux_tty); - } -} - diff --git a/drivers/char/pcmcia/ipwireless/tty.h b/drivers/char/pcmcia/ipwireless/tty.h deleted file mode 100644 index 747b2d637860..000000000000 --- a/drivers/char/pcmcia/ipwireless/tty.h +++ /dev/null @@ -1,45 +0,0 @@ -/* - * IPWireless 3G PCMCIA Network Driver - * - * Original code - * by Stephen Blackheath , - * Ben Martel - * - * Copyrighted as follows: - * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) - * - * Various driver changes and rewrites, port to new kernels - * Copyright (C) 2006-2007 Jiri Kosina - * - * Misc code cleanups and updates - * Copyright (C) 2007 David Sterba - */ - -#ifndef _IPWIRELESS_CS_TTY_H_ -#define _IPWIRELESS_CS_TTY_H_ - -#include -#include - -#include -#include - -struct ipw_tty; -struct ipw_network; -struct ipw_hardware; - -int ipwireless_tty_init(void); -void ipwireless_tty_release(void); - -struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hw, - struct ipw_network *net); -void ipwireless_tty_free(struct ipw_tty *tty); -void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, - unsigned int length); -int ipwireless_tty_is_modem(struct ipw_tty *tty); -void ipwireless_tty_notify_control_line_change(struct ipw_tty *tty, - unsigned int channel_idx, - unsigned int control_lines, - unsigned int changed_mask); - -#endif diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile index e549da348a04..690522fcb338 100644 --- a/drivers/tty/Makefile +++ b/drivers/tty/Makefile @@ -24,3 +24,5 @@ obj-$(CONFIG_ROCKETPORT) += rocket.o obj-$(CONFIG_SYNCLINK_GT) += synclink_gt.o obj-$(CONFIG_SYNCLINKMP) += synclinkmp.o obj-$(CONFIG_SYNCLINK) += synclink.o + +obj-y += ipwireless/ diff --git a/drivers/tty/ipwireless/Makefile b/drivers/tty/ipwireless/Makefile new file mode 100644 index 000000000000..db80873d7f20 --- /dev/null +++ b/drivers/tty/ipwireless/Makefile @@ -0,0 +1,10 @@ +# +# drivers/char/pcmcia/ipwireless/Makefile +# +# Makefile for the IPWireless driver +# + +obj-$(CONFIG_IPWIRELESS) += ipwireless.o + +ipwireless-y := hardware.o main.o network.o tty.o + diff --git a/drivers/tty/ipwireless/hardware.c b/drivers/tty/ipwireless/hardware.c new file mode 100644 index 000000000000..0aeb5a38d296 --- /dev/null +++ b/drivers/tty/ipwireless/hardware.c @@ -0,0 +1,1764 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#include +#include +#include +#include +#include +#include + +#include "hardware.h" +#include "setup_protocol.h" +#include "network.h" +#include "main.h" + +static void ipw_send_setup_packet(struct ipw_hardware *hw); +static void handle_received_SETUP_packet(struct ipw_hardware *ipw, + unsigned int address, + const unsigned char *data, int len, + int is_last); +static void ipwireless_setup_timer(unsigned long data); +static void handle_received_CTRL_packet(struct ipw_hardware *hw, + unsigned int channel_idx, const unsigned char *data, int len); + +/*#define TIMING_DIAGNOSTICS*/ + +#ifdef TIMING_DIAGNOSTICS + +static struct timing_stats { + unsigned long last_report_time; + unsigned long read_time; + unsigned long write_time; + unsigned long read_bytes; + unsigned long write_bytes; + unsigned long start_time; +}; + +static void start_timing(void) +{ + timing_stats.start_time = jiffies; +} + +static void end_read_timing(unsigned length) +{ + timing_stats.read_time += (jiffies - start_time); + timing_stats.read_bytes += length + 2; + report_timing(); +} + +static void end_write_timing(unsigned length) +{ + timing_stats.write_time += (jiffies - start_time); + timing_stats.write_bytes += length + 2; + report_timing(); +} + +static void report_timing(void) +{ + unsigned long since = jiffies - timing_stats.last_report_time; + + /* If it's been more than one second... */ + if (since >= HZ) { + int first = (timing_stats.last_report_time == 0); + + timing_stats.last_report_time = jiffies; + if (!first) + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": %u us elapsed - read %lu bytes in %u us, wrote %lu bytes in %u us\n", + jiffies_to_usecs(since), + timing_stats.read_bytes, + jiffies_to_usecs(timing_stats.read_time), + timing_stats.write_bytes, + jiffies_to_usecs(timing_stats.write_time)); + + timing_stats.read_time = 0; + timing_stats.write_time = 0; + timing_stats.read_bytes = 0; + timing_stats.write_bytes = 0; + } +} +#else +static void start_timing(void) { } +static void end_read_timing(unsigned length) { } +static void end_write_timing(unsigned length) { } +#endif + +/* Imported IPW definitions */ + +#define LL_MTU_V1 318 +#define LL_MTU_V2 250 +#define LL_MTU_MAX (LL_MTU_V1 > LL_MTU_V2 ? LL_MTU_V1 : LL_MTU_V2) + +#define PRIO_DATA 2 +#define PRIO_CTRL 1 +#define PRIO_SETUP 0 + +/* Addresses */ +#define ADDR_SETUP_PROT 0 + +/* Protocol ids */ +enum { + /* Identifier for the Com Data protocol */ + TL_PROTOCOLID_COM_DATA = 0, + + /* Identifier for the Com Control protocol */ + TL_PROTOCOLID_COM_CTRL = 1, + + /* Identifier for the Setup protocol */ + TL_PROTOCOLID_SETUP = 2 +}; + +/* Number of bytes in NL packet header (cannot do + * sizeof(nl_packet_header) since it's a bitfield) */ +#define NL_FIRST_PACKET_HEADER_SIZE 3 + +/* Number of bytes in NL packet header (cannot do + * sizeof(nl_packet_header) since it's a bitfield) */ +#define NL_FOLLOWING_PACKET_HEADER_SIZE 1 + +struct nl_first_packet_header { + unsigned char protocol:3; + unsigned char address:3; + unsigned char packet_rank:2; + unsigned char length_lsb; + unsigned char length_msb; +}; + +struct nl_packet_header { + unsigned char protocol:3; + unsigned char address:3; + unsigned char packet_rank:2; +}; + +/* Value of 'packet_rank' above */ +#define NL_INTERMEDIATE_PACKET 0x0 +#define NL_LAST_PACKET 0x1 +#define NL_FIRST_PACKET 0x2 + +union nl_packet { + /* Network packet header of the first packet (a special case) */ + struct nl_first_packet_header hdr_first; + /* Network packet header of the following packets (if any) */ + struct nl_packet_header hdr; + /* Complete network packet (header + data) */ + unsigned char rawpkt[LL_MTU_MAX]; +} __attribute__ ((__packed__)); + +#define HW_VERSION_UNKNOWN -1 +#define HW_VERSION_1 1 +#define HW_VERSION_2 2 + +/* IPW I/O ports */ +#define IOIER 0x00 /* Interrupt Enable Register */ +#define IOIR 0x02 /* Interrupt Source/ACK register */ +#define IODCR 0x04 /* Data Control Register */ +#define IODRR 0x06 /* Data Read Register */ +#define IODWR 0x08 /* Data Write Register */ +#define IOESR 0x0A /* Embedded Driver Status Register */ +#define IORXR 0x0C /* Rx Fifo Register (Host to Embedded) */ +#define IOTXR 0x0E /* Tx Fifo Register (Embedded to Host) */ + +/* I/O ports and bit definitions for version 1 of the hardware */ + +/* IER bits*/ +#define IER_RXENABLED 0x1 +#define IER_TXENABLED 0x2 + +/* ISR bits */ +#define IR_RXINTR 0x1 +#define IR_TXINTR 0x2 + +/* DCR bits */ +#define DCR_RXDONE 0x1 +#define DCR_TXDONE 0x2 +#define DCR_RXRESET 0x4 +#define DCR_TXRESET 0x8 + +/* I/O ports and bit definitions for version 2 of the hardware */ + +struct MEMCCR { + unsigned short reg_config_option; /* PCCOR: Configuration Option Register */ + unsigned short reg_config_and_status; /* PCCSR: Configuration and Status Register */ + unsigned short reg_pin_replacement; /* PCPRR: Pin Replacemant Register */ + unsigned short reg_socket_and_copy; /* PCSCR: Socket and Copy Register */ + unsigned short reg_ext_status; /* PCESR: Extendend Status Register */ + unsigned short reg_io_base; /* PCIOB: I/O Base Register */ +}; + +struct MEMINFREG { + unsigned short memreg_tx_old; /* TX Register (R/W) */ + unsigned short pad1; + unsigned short memreg_rx_done; /* RXDone Register (R/W) */ + unsigned short pad2; + unsigned short memreg_rx; /* RX Register (R/W) */ + unsigned short pad3; + unsigned short memreg_pc_interrupt_ack; /* PC intr Ack Register (W) */ + unsigned short pad4; + unsigned long memreg_card_present;/* Mask for Host to check (R) for + * CARD_PRESENT_VALUE */ + unsigned short memreg_tx_new; /* TX2 (new) Register (R/W) */ +}; + +#define CARD_PRESENT_VALUE (0xBEEFCAFEUL) + +#define MEMTX_TX 0x0001 +#define MEMRX_RX 0x0001 +#define MEMRX_RX_DONE 0x0001 +#define MEMRX_PCINTACKK 0x0001 + +#define NL_NUM_OF_PRIORITIES 3 +#define NL_NUM_OF_PROTOCOLS 3 +#define NL_NUM_OF_ADDRESSES NO_OF_IPW_CHANNELS + +struct ipw_hardware { + unsigned int base_port; + short hw_version; + unsigned short ll_mtu; + spinlock_t lock; + + int initializing; + int init_loops; + struct timer_list setup_timer; + + /* Flag if hw is ready to send next packet */ + int tx_ready; + /* Count of pending packets to be sent */ + int tx_queued; + struct list_head tx_queue[NL_NUM_OF_PRIORITIES]; + + int rx_bytes_queued; + struct list_head rx_queue; + /* Pool of rx_packet structures that are not currently used. */ + struct list_head rx_pool; + int rx_pool_size; + /* True if reception of data is blocked while userspace processes it. */ + int blocking_rx; + /* True if there is RX data ready on the hardware. */ + int rx_ready; + unsigned short last_memtx_serial; + /* + * Newer versions of the V2 card firmware send serial numbers in the + * MemTX register. 'serial_number_detected' is set true when we detect + * a non-zero serial number (indicating the new firmware). Thereafter, + * the driver can safely ignore the Timer Recovery re-sends to avoid + * out-of-sync problems. + */ + int serial_number_detected; + struct work_struct work_rx; + + /* True if we are to send the set-up data to the hardware. */ + int to_setup; + + /* Card has been removed */ + int removed; + /* Saved irq value when we disable the interrupt. */ + int irq; + /* True if this driver is shutting down. */ + int shutting_down; + /* Modem control lines */ + unsigned int control_lines[NL_NUM_OF_ADDRESSES]; + struct ipw_rx_packet *packet_assembler[NL_NUM_OF_ADDRESSES]; + + struct tasklet_struct tasklet; + + /* The handle for the network layer, for the sending of events to it. */ + struct ipw_network *network; + struct MEMINFREG __iomem *memory_info_regs; + struct MEMCCR __iomem *memregs_CCR; + void (*reboot_callback) (void *data); + void *reboot_callback_data; + + unsigned short __iomem *memreg_tx; +}; + +/* + * Packet info structure for tx packets. + * Note: not all the fields defined here are required for all protocols + */ +struct ipw_tx_packet { + struct list_head queue; + /* channel idx + 1 */ + unsigned char dest_addr; + /* SETUP, CTRL or DATA */ + unsigned char protocol; + /* Length of data block, which starts at the end of this structure */ + unsigned short length; + /* Sending state */ + /* Offset of where we've sent up to so far */ + unsigned long offset; + /* Count of packet fragments, starting at 0 */ + int fragment_count; + + /* Called after packet is sent and before is freed */ + void (*packet_callback) (void *cb_data, unsigned int packet_length); + void *callback_data; +}; + +/* Signals from DTE */ +#define COMCTRL_RTS 0 +#define COMCTRL_DTR 1 + +/* Signals from DCE */ +#define COMCTRL_CTS 2 +#define COMCTRL_DCD 3 +#define COMCTRL_DSR 4 +#define COMCTRL_RI 5 + +struct ipw_control_packet_body { + /* DTE signal or DCE signal */ + unsigned char sig_no; + /* 0: set signal, 1: clear signal */ + unsigned char value; +} __attribute__ ((__packed__)); + +struct ipw_control_packet { + struct ipw_tx_packet header; + struct ipw_control_packet_body body; +}; + +struct ipw_rx_packet { + struct list_head queue; + unsigned int capacity; + unsigned int length; + unsigned int protocol; + unsigned int channel_idx; +}; + +static char *data_type(const unsigned char *buf, unsigned length) +{ + struct nl_packet_header *hdr = (struct nl_packet_header *) buf; + + if (length == 0) + return " "; + + if (hdr->packet_rank & NL_FIRST_PACKET) { + switch (hdr->protocol) { + case TL_PROTOCOLID_COM_DATA: return "DATA "; + case TL_PROTOCOLID_COM_CTRL: return "CTRL "; + case TL_PROTOCOLID_SETUP: return "SETUP"; + default: return "???? "; + } + } else + return " "; +} + +#define DUMP_MAX_BYTES 64 + +static void dump_data_bytes(const char *type, const unsigned char *data, + unsigned length) +{ + char prefix[56]; + + sprintf(prefix, IPWIRELESS_PCCARD_NAME ": %s %s ", + type, data_type(data, length)); + print_hex_dump_bytes(prefix, 0, (void *)data, + length < DUMP_MAX_BYTES ? length : DUMP_MAX_BYTES); +} + +static void swap_packet_bitfield_to_le(unsigned char *data) +{ +#ifdef __BIG_ENDIAN_BITFIELD + unsigned char tmp = *data, ret = 0; + + /* + * transform bits from aa.bbb.ccc to ccc.bbb.aa + */ + ret |= tmp & 0xc0 >> 6; + ret |= tmp & 0x38 >> 1; + ret |= tmp & 0x07 << 5; + *data = ret & 0xff; +#endif +} + +static void swap_packet_bitfield_from_le(unsigned char *data) +{ +#ifdef __BIG_ENDIAN_BITFIELD + unsigned char tmp = *data, ret = 0; + + /* + * transform bits from ccc.bbb.aa to aa.bbb.ccc + */ + ret |= tmp & 0xe0 >> 5; + ret |= tmp & 0x1c << 1; + ret |= tmp & 0x03 << 6; + *data = ret & 0xff; +#endif +} + +static void do_send_fragment(struct ipw_hardware *hw, unsigned char *data, + unsigned length) +{ + unsigned i; + unsigned long flags; + + start_timing(); + BUG_ON(length > hw->ll_mtu); + + if (ipwireless_debug) + dump_data_bytes("send", data, length); + + spin_lock_irqsave(&hw->lock, flags); + + hw->tx_ready = 0; + swap_packet_bitfield_to_le(data); + + if (hw->hw_version == HW_VERSION_1) { + outw((unsigned short) length, hw->base_port + IODWR); + + for (i = 0; i < length; i += 2) { + unsigned short d = data[i]; + __le16 raw_data; + + if (i + 1 < length) + d |= data[i + 1] << 8; + raw_data = cpu_to_le16(d); + outw(raw_data, hw->base_port + IODWR); + } + + outw(DCR_TXDONE, hw->base_port + IODCR); + } else if (hw->hw_version == HW_VERSION_2) { + outw((unsigned short) length, hw->base_port); + + for (i = 0; i < length; i += 2) { + unsigned short d = data[i]; + __le16 raw_data; + + if (i + 1 < length) + d |= data[i + 1] << 8; + raw_data = cpu_to_le16(d); + outw(raw_data, hw->base_port); + } + while ((i & 3) != 2) { + outw((unsigned short) 0xDEAD, hw->base_port); + i += 2; + } + writew(MEMRX_RX, &hw->memory_info_regs->memreg_rx); + } + + spin_unlock_irqrestore(&hw->lock, flags); + + end_write_timing(length); +} + +static void do_send_packet(struct ipw_hardware *hw, struct ipw_tx_packet *packet) +{ + unsigned short fragment_data_len; + unsigned short data_left = packet->length - packet->offset; + unsigned short header_size; + union nl_packet pkt; + + header_size = + (packet->fragment_count == 0) + ? NL_FIRST_PACKET_HEADER_SIZE + : NL_FOLLOWING_PACKET_HEADER_SIZE; + fragment_data_len = hw->ll_mtu - header_size; + if (data_left < fragment_data_len) + fragment_data_len = data_left; + + /* + * hdr_first is now in machine bitfield order, which will be swapped + * to le just before it goes to hw + */ + pkt.hdr_first.protocol = packet->protocol; + pkt.hdr_first.address = packet->dest_addr; + pkt.hdr_first.packet_rank = 0; + + /* First packet? */ + if (packet->fragment_count == 0) { + pkt.hdr_first.packet_rank |= NL_FIRST_PACKET; + pkt.hdr_first.length_lsb = (unsigned char) packet->length; + pkt.hdr_first.length_msb = + (unsigned char) (packet->length >> 8); + } + + memcpy(pkt.rawpkt + header_size, + ((unsigned char *) packet) + sizeof(struct ipw_tx_packet) + + packet->offset, fragment_data_len); + packet->offset += fragment_data_len; + packet->fragment_count++; + + /* Last packet? (May also be first packet.) */ + if (packet->offset == packet->length) + pkt.hdr_first.packet_rank |= NL_LAST_PACKET; + do_send_fragment(hw, pkt.rawpkt, header_size + fragment_data_len); + + /* If this packet has unsent data, then re-queue it. */ + if (packet->offset < packet->length) { + /* + * Re-queue it at the head of the highest priority queue so + * it goes before all other packets + */ + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + list_add(&packet->queue, &hw->tx_queue[0]); + hw->tx_queued++; + spin_unlock_irqrestore(&hw->lock, flags); + } else { + if (packet->packet_callback) + packet->packet_callback(packet->callback_data, + packet->length); + kfree(packet); + } +} + +static void ipw_setup_hardware(struct ipw_hardware *hw) +{ + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + if (hw->hw_version == HW_VERSION_1) { + /* Reset RX FIFO */ + outw(DCR_RXRESET, hw->base_port + IODCR); + /* SB: Reset TX FIFO */ + outw(DCR_TXRESET, hw->base_port + IODCR); + + /* Enable TX and RX interrupts. */ + outw(IER_TXENABLED | IER_RXENABLED, hw->base_port + IOIER); + } else { + /* + * Set INTRACK bit (bit 0), which means we must explicitly + * acknowledge interrupts by clearing bit 2 of reg_config_and_status. + */ + unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status); + + csr |= 1; + writew(csr, &hw->memregs_CCR->reg_config_and_status); + } + spin_unlock_irqrestore(&hw->lock, flags); +} + +/* + * If 'packet' is NULL, then this function allocates a new packet, setting its + * length to 0 and ensuring it has the specified minimum amount of free space. + * + * If 'packet' is not NULL, then this function enlarges it if it doesn't + * have the specified minimum amount of free space. + * + */ +static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw, + struct ipw_rx_packet *packet, + int minimum_free_space) +{ + + if (!packet) { + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + if (!list_empty(&hw->rx_pool)) { + packet = list_first_entry(&hw->rx_pool, + struct ipw_rx_packet, queue); + hw->rx_pool_size--; + spin_unlock_irqrestore(&hw->lock, flags); + list_del(&packet->queue); + } else { + const int min_capacity = + ipwireless_ppp_mru(hw->network) + 2; + int new_capacity; + + spin_unlock_irqrestore(&hw->lock, flags); + new_capacity = + (minimum_free_space > min_capacity + ? minimum_free_space + : min_capacity); + packet = kmalloc(sizeof(struct ipw_rx_packet) + + new_capacity, GFP_ATOMIC); + if (!packet) + return NULL; + packet->capacity = new_capacity; + } + packet->length = 0; + } + + if (packet->length + minimum_free_space > packet->capacity) { + struct ipw_rx_packet *old_packet = packet; + + packet = kmalloc(sizeof(struct ipw_rx_packet) + + old_packet->length + minimum_free_space, + GFP_ATOMIC); + if (!packet) { + kfree(old_packet); + return NULL; + } + memcpy(packet, old_packet, + sizeof(struct ipw_rx_packet) + + old_packet->length); + packet->capacity = old_packet->length + minimum_free_space; + kfree(old_packet); + } + + return packet; +} + +static void pool_free(struct ipw_hardware *hw, struct ipw_rx_packet *packet) +{ + if (hw->rx_pool_size > 6) + kfree(packet); + else { + hw->rx_pool_size++; + list_add(&packet->queue, &hw->rx_pool); + } +} + +static void queue_received_packet(struct ipw_hardware *hw, + unsigned int protocol, + unsigned int address, + const unsigned char *data, int length, + int is_last) +{ + unsigned int channel_idx = address - 1; + struct ipw_rx_packet *packet = NULL; + unsigned long flags; + + /* Discard packet if channel index is out of range. */ + if (channel_idx >= NL_NUM_OF_ADDRESSES) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": data packet has bad address %u\n", address); + return; + } + + /* + * ->packet_assembler is safe to touch unlocked, this is the only place + */ + if (protocol == TL_PROTOCOLID_COM_DATA) { + struct ipw_rx_packet **assem = + &hw->packet_assembler[channel_idx]; + + /* + * Create a new packet, or assembler already contains one + * enlarge it by 'length' bytes. + */ + (*assem) = pool_allocate(hw, *assem, length); + if (!(*assem)) { + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": no memory for incomming data packet, dropped!\n"); + return; + } + (*assem)->protocol = protocol; + (*assem)->channel_idx = channel_idx; + + /* Append this packet data onto existing data. */ + memcpy((unsigned char *)(*assem) + + sizeof(struct ipw_rx_packet) + + (*assem)->length, data, length); + (*assem)->length += length; + if (is_last) { + packet = *assem; + *assem = NULL; + /* Count queued DATA bytes only */ + spin_lock_irqsave(&hw->lock, flags); + hw->rx_bytes_queued += packet->length; + spin_unlock_irqrestore(&hw->lock, flags); + } + } else { + /* If it's a CTRL packet, don't assemble, just queue it. */ + packet = pool_allocate(hw, NULL, length); + if (!packet) { + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": no memory for incomming ctrl packet, dropped!\n"); + return; + } + packet->protocol = protocol; + packet->channel_idx = channel_idx; + memcpy((unsigned char *)packet + sizeof(struct ipw_rx_packet), + data, length); + packet->length = length; + } + + /* + * If this is the last packet, then send the assembled packet on to the + * network layer. + */ + if (packet) { + spin_lock_irqsave(&hw->lock, flags); + list_add_tail(&packet->queue, &hw->rx_queue); + /* Block reception of incoming packets if queue is full. */ + hw->blocking_rx = + (hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE); + + spin_unlock_irqrestore(&hw->lock, flags); + schedule_work(&hw->work_rx); + } +} + +/* + * Workqueue callback + */ +static void ipw_receive_data_work(struct work_struct *work_rx) +{ + struct ipw_hardware *hw = + container_of(work_rx, struct ipw_hardware, work_rx); + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + while (!list_empty(&hw->rx_queue)) { + struct ipw_rx_packet *packet = + list_first_entry(&hw->rx_queue, + struct ipw_rx_packet, queue); + + if (hw->shutting_down) + break; + list_del(&packet->queue); + + /* + * Note: ipwireless_network_packet_received must be called in a + * process context (i.e. via schedule_work) because the tty + * output code can sleep in the tty_flip_buffer_push call. + */ + if (packet->protocol == TL_PROTOCOLID_COM_DATA) { + if (hw->network != NULL) { + /* If the network hasn't been disconnected. */ + spin_unlock_irqrestore(&hw->lock, flags); + /* + * This must run unlocked due to tty processing + * and mutex locking + */ + ipwireless_network_packet_received( + hw->network, + packet->channel_idx, + (unsigned char *)packet + + sizeof(struct ipw_rx_packet), + packet->length); + spin_lock_irqsave(&hw->lock, flags); + } + /* Count queued DATA bytes only */ + hw->rx_bytes_queued -= packet->length; + } else { + /* + * This is safe to be called locked, callchain does + * not block + */ + handle_received_CTRL_packet(hw, packet->channel_idx, + (unsigned char *)packet + + sizeof(struct ipw_rx_packet), + packet->length); + } + pool_free(hw, packet); + /* + * Unblock reception of incoming packets if queue is no longer + * full. + */ + hw->blocking_rx = + hw->rx_bytes_queued >= IPWIRELESS_RX_QUEUE_SIZE; + if (hw->shutting_down) + break; + } + spin_unlock_irqrestore(&hw->lock, flags); +} + +static void handle_received_CTRL_packet(struct ipw_hardware *hw, + unsigned int channel_idx, + const unsigned char *data, int len) +{ + const struct ipw_control_packet_body *body = + (const struct ipw_control_packet_body *) data; + unsigned int changed_mask; + + if (len != sizeof(struct ipw_control_packet_body)) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": control packet was %d bytes - wrong size!\n", + len); + return; + } + + switch (body->sig_no) { + case COMCTRL_CTS: + changed_mask = IPW_CONTROL_LINE_CTS; + break; + case COMCTRL_DCD: + changed_mask = IPW_CONTROL_LINE_DCD; + break; + case COMCTRL_DSR: + changed_mask = IPW_CONTROL_LINE_DSR; + break; + case COMCTRL_RI: + changed_mask = IPW_CONTROL_LINE_RI; + break; + default: + changed_mask = 0; + } + + if (changed_mask != 0) { + if (body->value) + hw->control_lines[channel_idx] |= changed_mask; + else + hw->control_lines[channel_idx] &= ~changed_mask; + if (hw->network) + ipwireless_network_notify_control_line_change( + hw->network, + channel_idx, + hw->control_lines[channel_idx], + changed_mask); + } +} + +static void handle_received_packet(struct ipw_hardware *hw, + const union nl_packet *packet, + unsigned short len) +{ + unsigned int protocol = packet->hdr.protocol; + unsigned int address = packet->hdr.address; + unsigned int header_length; + const unsigned char *data; + unsigned int data_len; + int is_last = packet->hdr.packet_rank & NL_LAST_PACKET; + + if (packet->hdr.packet_rank & NL_FIRST_PACKET) + header_length = NL_FIRST_PACKET_HEADER_SIZE; + else + header_length = NL_FOLLOWING_PACKET_HEADER_SIZE; + + data = packet->rawpkt + header_length; + data_len = len - header_length; + switch (protocol) { + case TL_PROTOCOLID_COM_DATA: + case TL_PROTOCOLID_COM_CTRL: + queue_received_packet(hw, protocol, address, data, data_len, + is_last); + break; + case TL_PROTOCOLID_SETUP: + handle_received_SETUP_packet(hw, address, data, data_len, + is_last); + break; + } +} + +static void acknowledge_data_read(struct ipw_hardware *hw) +{ + if (hw->hw_version == HW_VERSION_1) + outw(DCR_RXDONE, hw->base_port + IODCR); + else + writew(MEMRX_PCINTACKK, + &hw->memory_info_regs->memreg_pc_interrupt_ack); +} + +/* + * Retrieve a packet from the IPW hardware. + */ +static void do_receive_packet(struct ipw_hardware *hw) +{ + unsigned len; + unsigned i; + unsigned char pkt[LL_MTU_MAX]; + + start_timing(); + + if (hw->hw_version == HW_VERSION_1) { + len = inw(hw->base_port + IODRR); + if (len > hw->ll_mtu) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": received a packet of %u bytes - longer than the MTU!\n", len); + outw(DCR_RXDONE | DCR_RXRESET, hw->base_port + IODCR); + return; + } + + for (i = 0; i < len; i += 2) { + __le16 raw_data = inw(hw->base_port + IODRR); + unsigned short data = le16_to_cpu(raw_data); + + pkt[i] = (unsigned char) data; + pkt[i + 1] = (unsigned char) (data >> 8); + } + } else { + len = inw(hw->base_port); + if (len > hw->ll_mtu) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": received a packet of %u bytes - longer than the MTU!\n", len); + writew(MEMRX_PCINTACKK, + &hw->memory_info_regs->memreg_pc_interrupt_ack); + return; + } + + for (i = 0; i < len; i += 2) { + __le16 raw_data = inw(hw->base_port); + unsigned short data = le16_to_cpu(raw_data); + + pkt[i] = (unsigned char) data; + pkt[i + 1] = (unsigned char) (data >> 8); + } + + while ((i & 3) != 2) { + inw(hw->base_port); + i += 2; + } + } + + acknowledge_data_read(hw); + + swap_packet_bitfield_from_le(pkt); + + if (ipwireless_debug) + dump_data_bytes("recv", pkt, len); + + handle_received_packet(hw, (union nl_packet *) pkt, len); + + end_read_timing(len); +} + +static int get_current_packet_priority(struct ipw_hardware *hw) +{ + /* + * If we're initializing, don't send anything of higher priority than + * PRIO_SETUP. The network layer therefore need not care about + * hardware initialization - any of its stuff will simply be queued + * until setup is complete. + */ + return (hw->to_setup || hw->initializing + ? PRIO_SETUP + 1 : NL_NUM_OF_PRIORITIES); +} + +/* + * return 1 if something has been received from hw + */ +static int get_packets_from_hw(struct ipw_hardware *hw) +{ + int received = 0; + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + while (hw->rx_ready && !hw->blocking_rx) { + received = 1; + hw->rx_ready--; + spin_unlock_irqrestore(&hw->lock, flags); + + do_receive_packet(hw); + + spin_lock_irqsave(&hw->lock, flags); + } + spin_unlock_irqrestore(&hw->lock, flags); + + return received; +} + +/* + * Send pending packet up to given priority, prioritize SETUP data until + * hardware is fully setup. + * + * return 1 if more packets can be sent + */ +static int send_pending_packet(struct ipw_hardware *hw, int priority_limit) +{ + int more_to_send = 0; + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + if (hw->tx_queued && hw->tx_ready) { + int priority; + struct ipw_tx_packet *packet = NULL; + + /* Pick a packet */ + for (priority = 0; priority < priority_limit; priority++) { + if (!list_empty(&hw->tx_queue[priority])) { + packet = list_first_entry( + &hw->tx_queue[priority], + struct ipw_tx_packet, + queue); + + hw->tx_queued--; + list_del(&packet->queue); + + break; + } + } + if (!packet) { + hw->tx_queued = 0; + spin_unlock_irqrestore(&hw->lock, flags); + return 0; + } + + spin_unlock_irqrestore(&hw->lock, flags); + + /* Send */ + do_send_packet(hw, packet); + + /* Check if more to send */ + spin_lock_irqsave(&hw->lock, flags); + for (priority = 0; priority < priority_limit; priority++) + if (!list_empty(&hw->tx_queue[priority])) { + more_to_send = 1; + break; + } + + if (!more_to_send) + hw->tx_queued = 0; + } + spin_unlock_irqrestore(&hw->lock, flags); + + return more_to_send; +} + +/* + * Send and receive all queued packets. + */ +static void ipwireless_do_tasklet(unsigned long hw_) +{ + struct ipw_hardware *hw = (struct ipw_hardware *) hw_; + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + if (hw->shutting_down) { + spin_unlock_irqrestore(&hw->lock, flags); + return; + } + + if (hw->to_setup == 1) { + /* + * Initial setup data sent to hardware + */ + hw->to_setup = 2; + spin_unlock_irqrestore(&hw->lock, flags); + + ipw_setup_hardware(hw); + ipw_send_setup_packet(hw); + + send_pending_packet(hw, PRIO_SETUP + 1); + get_packets_from_hw(hw); + } else { + int priority_limit = get_current_packet_priority(hw); + int again; + + spin_unlock_irqrestore(&hw->lock, flags); + + do { + again = send_pending_packet(hw, priority_limit); + again |= get_packets_from_hw(hw); + } while (again); + } +} + +/* + * return true if the card is physically present. + */ +static int is_card_present(struct ipw_hardware *hw) +{ + if (hw->hw_version == HW_VERSION_1) + return inw(hw->base_port + IOIR) != 0xFFFF; + else + return readl(&hw->memory_info_regs->memreg_card_present) == + CARD_PRESENT_VALUE; +} + +static irqreturn_t ipwireless_handle_v1_interrupt(int irq, + struct ipw_hardware *hw) +{ + unsigned short irqn; + + irqn = inw(hw->base_port + IOIR); + + /* Check if card is present */ + if (irqn == 0xFFFF) + return IRQ_NONE; + else if (irqn != 0) { + unsigned short ack = 0; + unsigned long flags; + + /* Transmit complete. */ + if (irqn & IR_TXINTR) { + ack |= IR_TXINTR; + spin_lock_irqsave(&hw->lock, flags); + hw->tx_ready = 1; + spin_unlock_irqrestore(&hw->lock, flags); + } + /* Received data */ + if (irqn & IR_RXINTR) { + ack |= IR_RXINTR; + spin_lock_irqsave(&hw->lock, flags); + hw->rx_ready++; + spin_unlock_irqrestore(&hw->lock, flags); + } + if (ack != 0) { + outw(ack, hw->base_port + IOIR); + tasklet_schedule(&hw->tasklet); + } + return IRQ_HANDLED; + } + return IRQ_NONE; +} + +static void acknowledge_pcmcia_interrupt(struct ipw_hardware *hw) +{ + unsigned short csr = readw(&hw->memregs_CCR->reg_config_and_status); + + csr &= 0xfffd; + writew(csr, &hw->memregs_CCR->reg_config_and_status); +} + +static irqreturn_t ipwireless_handle_v2_v3_interrupt(int irq, + struct ipw_hardware *hw) +{ + int tx = 0; + int rx = 0; + int rx_repeat = 0; + int try_mem_tx_old; + unsigned long flags; + + do { + + unsigned short memtx = readw(hw->memreg_tx); + unsigned short memtx_serial; + unsigned short memrxdone = + readw(&hw->memory_info_regs->memreg_rx_done); + + try_mem_tx_old = 0; + + /* check whether the interrupt was generated by ipwireless card */ + if (!(memtx & MEMTX_TX) && !(memrxdone & MEMRX_RX_DONE)) { + + /* check if the card uses memreg_tx_old register */ + if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { + memtx = readw(&hw->memory_info_regs->memreg_tx_old); + if (memtx & MEMTX_TX) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": Using memreg_tx_old\n"); + hw->memreg_tx = + &hw->memory_info_regs->memreg_tx_old; + } else { + return IRQ_NONE; + } + } else + return IRQ_NONE; + } + + /* + * See if the card is physically present. Note that while it is + * powering up, it appears not to be present. + */ + if (!is_card_present(hw)) { + acknowledge_pcmcia_interrupt(hw); + return IRQ_HANDLED; + } + + memtx_serial = memtx & (unsigned short) 0xff00; + if (memtx & MEMTX_TX) { + writew(memtx_serial, hw->memreg_tx); + + if (hw->serial_number_detected) { + if (memtx_serial != hw->last_memtx_serial) { + hw->last_memtx_serial = memtx_serial; + spin_lock_irqsave(&hw->lock, flags); + hw->rx_ready++; + spin_unlock_irqrestore(&hw->lock, flags); + rx = 1; + } else + /* Ignore 'Timer Recovery' duplicates. */ + rx_repeat = 1; + } else { + /* + * If a non-zero serial number is seen, then enable + * serial number checking. + */ + if (memtx_serial != 0) { + hw->serial_number_detected = 1; + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME + ": memreg_tx serial num detected\n"); + + spin_lock_irqsave(&hw->lock, flags); + hw->rx_ready++; + spin_unlock_irqrestore(&hw->lock, flags); + } + rx = 1; + } + } + if (memrxdone & MEMRX_RX_DONE) { + writew(0, &hw->memory_info_regs->memreg_rx_done); + spin_lock_irqsave(&hw->lock, flags); + hw->tx_ready = 1; + spin_unlock_irqrestore(&hw->lock, flags); + tx = 1; + } + if (tx) + writew(MEMRX_PCINTACKK, + &hw->memory_info_regs->memreg_pc_interrupt_ack); + + acknowledge_pcmcia_interrupt(hw); + + if (tx || rx) + tasklet_schedule(&hw->tasklet); + else if (!rx_repeat) { + if (hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { + if (hw->serial_number_detected) + printk(KERN_WARNING IPWIRELESS_PCCARD_NAME + ": spurious interrupt - new_tx mode\n"); + else { + printk(KERN_WARNING IPWIRELESS_PCCARD_NAME + ": no valid memreg_tx value - switching to the old memreg_tx\n"); + hw->memreg_tx = + &hw->memory_info_regs->memreg_tx_old; + try_mem_tx_old = 1; + } + } else + printk(KERN_WARNING IPWIRELESS_PCCARD_NAME + ": spurious interrupt - old_tx mode\n"); + } + + } while (try_mem_tx_old == 1); + + return IRQ_HANDLED; +} + +irqreturn_t ipwireless_interrupt(int irq, void *dev_id) +{ + struct ipw_dev *ipw = dev_id; + + if (ipw->hardware->hw_version == HW_VERSION_1) + return ipwireless_handle_v1_interrupt(irq, ipw->hardware); + else + return ipwireless_handle_v2_v3_interrupt(irq, ipw->hardware); +} + +static void flush_packets_to_hw(struct ipw_hardware *hw) +{ + int priority_limit; + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + priority_limit = get_current_packet_priority(hw); + spin_unlock_irqrestore(&hw->lock, flags); + + while (send_pending_packet(hw, priority_limit)); +} + +static void send_packet(struct ipw_hardware *hw, int priority, + struct ipw_tx_packet *packet) +{ + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + list_add_tail(&packet->queue, &hw->tx_queue[priority]); + hw->tx_queued++; + spin_unlock_irqrestore(&hw->lock, flags); + + flush_packets_to_hw(hw); +} + +/* Create data packet, non-atomic allocation */ +static void *alloc_data_packet(int data_size, + unsigned char dest_addr, + unsigned char protocol) +{ + struct ipw_tx_packet *packet = kzalloc( + sizeof(struct ipw_tx_packet) + data_size, + GFP_ATOMIC); + + if (!packet) + return NULL; + + INIT_LIST_HEAD(&packet->queue); + packet->dest_addr = dest_addr; + packet->protocol = protocol; + packet->length = data_size; + + return packet; +} + +static void *alloc_ctrl_packet(int header_size, + unsigned char dest_addr, + unsigned char protocol, + unsigned char sig_no) +{ + /* + * sig_no is located right after ipw_tx_packet struct in every + * CTRL or SETUP packets, we can use ipw_control_packet as a + * common struct + */ + struct ipw_control_packet *packet = kzalloc(header_size, GFP_ATOMIC); + + if (!packet) + return NULL; + + INIT_LIST_HEAD(&packet->header.queue); + packet->header.dest_addr = dest_addr; + packet->header.protocol = protocol; + packet->header.length = header_size - sizeof(struct ipw_tx_packet); + packet->body.sig_no = sig_no; + + return packet; +} + +int ipwireless_send_packet(struct ipw_hardware *hw, unsigned int channel_idx, + const unsigned char *data, unsigned int length, + void (*callback) (void *cb, unsigned int length), + void *callback_data) +{ + struct ipw_tx_packet *packet; + + packet = alloc_data_packet(length, (channel_idx + 1), + TL_PROTOCOLID_COM_DATA); + if (!packet) + return -ENOMEM; + packet->packet_callback = callback; + packet->callback_data = callback_data; + memcpy((unsigned char *) packet + sizeof(struct ipw_tx_packet), data, + length); + + send_packet(hw, PRIO_DATA, packet); + return 0; +} + +static int set_control_line(struct ipw_hardware *hw, int prio, + unsigned int channel_idx, int line, int state) +{ + struct ipw_control_packet *packet; + int protocolid = TL_PROTOCOLID_COM_CTRL; + + if (prio == PRIO_SETUP) + protocolid = TL_PROTOCOLID_SETUP; + + packet = alloc_ctrl_packet(sizeof(struct ipw_control_packet), + (channel_idx + 1), protocolid, line); + if (!packet) + return -ENOMEM; + packet->header.length = sizeof(struct ipw_control_packet_body); + packet->body.value = (state == 0 ? 0 : 1); + send_packet(hw, prio, &packet->header); + return 0; +} + + +static int set_DTR(struct ipw_hardware *hw, int priority, + unsigned int channel_idx, int state) +{ + if (state != 0) + hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_DTR; + else + hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_DTR; + + return set_control_line(hw, priority, channel_idx, COMCTRL_DTR, state); +} + +static int set_RTS(struct ipw_hardware *hw, int priority, + unsigned int channel_idx, int state) +{ + if (state != 0) + hw->control_lines[channel_idx] |= IPW_CONTROL_LINE_RTS; + else + hw->control_lines[channel_idx] &= ~IPW_CONTROL_LINE_RTS; + + return set_control_line(hw, priority, channel_idx, COMCTRL_RTS, state); +} + +int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx, + int state) +{ + return set_DTR(hw, PRIO_CTRL, channel_idx, state); +} + +int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx, + int state) +{ + return set_RTS(hw, PRIO_CTRL, channel_idx, state); +} + +struct ipw_setup_get_version_query_packet { + struct ipw_tx_packet header; + struct tl_setup_get_version_qry body; +}; + +struct ipw_setup_config_packet { + struct ipw_tx_packet header; + struct tl_setup_config_msg body; +}; + +struct ipw_setup_config_done_packet { + struct ipw_tx_packet header; + struct tl_setup_config_done_msg body; +}; + +struct ipw_setup_open_packet { + struct ipw_tx_packet header; + struct tl_setup_open_msg body; +}; + +struct ipw_setup_info_packet { + struct ipw_tx_packet header; + struct tl_setup_info_msg body; +}; + +struct ipw_setup_reboot_msg_ack { + struct ipw_tx_packet header; + struct TlSetupRebootMsgAck body; +}; + +/* This handles the actual initialization of the card */ +static void __handle_setup_get_version_rsp(struct ipw_hardware *hw) +{ + struct ipw_setup_config_packet *config_packet; + struct ipw_setup_config_done_packet *config_done_packet; + struct ipw_setup_open_packet *open_packet; + struct ipw_setup_info_packet *info_packet; + int port; + unsigned int channel_idx; + + /* generate config packet */ + for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) { + config_packet = alloc_ctrl_packet( + sizeof(struct ipw_setup_config_packet), + ADDR_SETUP_PROT, + TL_PROTOCOLID_SETUP, + TL_SETUP_SIGNO_CONFIG_MSG); + if (!config_packet) + goto exit_nomem; + config_packet->header.length = sizeof(struct tl_setup_config_msg); + config_packet->body.port_no = port; + config_packet->body.prio_data = PRIO_DATA; + config_packet->body.prio_ctrl = PRIO_CTRL; + send_packet(hw, PRIO_SETUP, &config_packet->header); + } + config_done_packet = alloc_ctrl_packet( + sizeof(struct ipw_setup_config_done_packet), + ADDR_SETUP_PROT, + TL_PROTOCOLID_SETUP, + TL_SETUP_SIGNO_CONFIG_DONE_MSG); + if (!config_done_packet) + goto exit_nomem; + config_done_packet->header.length = sizeof(struct tl_setup_config_done_msg); + send_packet(hw, PRIO_SETUP, &config_done_packet->header); + + /* generate open packet */ + for (port = 1; port <= NL_NUM_OF_ADDRESSES; port++) { + open_packet = alloc_ctrl_packet( + sizeof(struct ipw_setup_open_packet), + ADDR_SETUP_PROT, + TL_PROTOCOLID_SETUP, + TL_SETUP_SIGNO_OPEN_MSG); + if (!open_packet) + goto exit_nomem; + open_packet->header.length = sizeof(struct tl_setup_open_msg); + open_packet->body.port_no = port; + send_packet(hw, PRIO_SETUP, &open_packet->header); + } + for (channel_idx = 0; + channel_idx < NL_NUM_OF_ADDRESSES; channel_idx++) { + int ret; + + ret = set_DTR(hw, PRIO_SETUP, channel_idx, + (hw->control_lines[channel_idx] & + IPW_CONTROL_LINE_DTR) != 0); + if (ret) { + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": error setting DTR (%d)\n", ret); + return; + } + + set_RTS(hw, PRIO_SETUP, channel_idx, + (hw->control_lines [channel_idx] & + IPW_CONTROL_LINE_RTS) != 0); + if (ret) { + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": error setting RTS (%d)\n", ret); + return; + } + } + /* + * For NDIS we assume that we are using sync PPP frames, for COM async. + * This driver uses NDIS mode too. We don't bother with translation + * from async -> sync PPP. + */ + info_packet = alloc_ctrl_packet(sizeof(struct ipw_setup_info_packet), + ADDR_SETUP_PROT, + TL_PROTOCOLID_SETUP, + TL_SETUP_SIGNO_INFO_MSG); + if (!info_packet) + goto exit_nomem; + info_packet->header.length = sizeof(struct tl_setup_info_msg); + info_packet->body.driver_type = NDISWAN_DRIVER; + info_packet->body.major_version = NDISWAN_DRIVER_MAJOR_VERSION; + info_packet->body.minor_version = NDISWAN_DRIVER_MINOR_VERSION; + send_packet(hw, PRIO_SETUP, &info_packet->header); + + /* Initialization is now complete, so we clear the 'to_setup' flag */ + hw->to_setup = 0; + + return; + +exit_nomem: + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": not enough memory to alloc control packet\n"); + hw->to_setup = -1; +} + +static void handle_setup_get_version_rsp(struct ipw_hardware *hw, + unsigned char vers_no) +{ + del_timer(&hw->setup_timer); + hw->initializing = 0; + printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": card is ready.\n"); + + if (vers_no == TL_SETUP_VERSION) + __handle_setup_get_version_rsp(hw); + else + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": invalid hardware version no %u\n", + (unsigned int) vers_no); +} + +static void ipw_send_setup_packet(struct ipw_hardware *hw) +{ + struct ipw_setup_get_version_query_packet *ver_packet; + + ver_packet = alloc_ctrl_packet( + sizeof(struct ipw_setup_get_version_query_packet), + ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, + TL_SETUP_SIGNO_GET_VERSION_QRY); + ver_packet->header.length = sizeof(struct tl_setup_get_version_qry); + + /* + * Response is handled in handle_received_SETUP_packet + */ + send_packet(hw, PRIO_SETUP, &ver_packet->header); +} + +static void handle_received_SETUP_packet(struct ipw_hardware *hw, + unsigned int address, + const unsigned char *data, int len, + int is_last) +{ + const union ipw_setup_rx_msg *rx_msg = (const union ipw_setup_rx_msg *) data; + + if (address != ADDR_SETUP_PROT) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": setup packet has bad address %d\n", address); + return; + } + + switch (rx_msg->sig_no) { + case TL_SETUP_SIGNO_GET_VERSION_RSP: + if (hw->to_setup) + handle_setup_get_version_rsp(hw, + rx_msg->version_rsp_msg.version); + break; + + case TL_SETUP_SIGNO_OPEN_MSG: + if (ipwireless_debug) { + unsigned int channel_idx = rx_msg->open_msg.port_no - 1; + + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": OPEN_MSG [channel %u] reply received\n", + channel_idx); + } + break; + + case TL_SETUP_SIGNO_INFO_MSG_ACK: + if (ipwireless_debug) + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME + ": card successfully configured as NDISWAN\n"); + break; + + case TL_SETUP_SIGNO_REBOOT_MSG: + if (hw->to_setup) + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME + ": Setup not completed - ignoring reboot msg\n"); + else { + struct ipw_setup_reboot_msg_ack *packet; + + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME + ": Acknowledging REBOOT message\n"); + packet = alloc_ctrl_packet( + sizeof(struct ipw_setup_reboot_msg_ack), + ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP, + TL_SETUP_SIGNO_REBOOT_MSG_ACK); + packet->header.length = + sizeof(struct TlSetupRebootMsgAck); + send_packet(hw, PRIO_SETUP, &packet->header); + if (hw->reboot_callback) + hw->reboot_callback(hw->reboot_callback_data); + } + break; + + default: + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": unknown setup message %u received\n", + (unsigned int) rx_msg->sig_no); + } +} + +static void do_close_hardware(struct ipw_hardware *hw) +{ + unsigned int irqn; + + if (hw->hw_version == HW_VERSION_1) { + /* Disable TX and RX interrupts. */ + outw(0, hw->base_port + IOIER); + + /* Acknowledge any outstanding interrupt requests */ + irqn = inw(hw->base_port + IOIR); + if (irqn & IR_TXINTR) + outw(IR_TXINTR, hw->base_port + IOIR); + if (irqn & IR_RXINTR) + outw(IR_RXINTR, hw->base_port + IOIR); + + synchronize_irq(hw->irq); + } +} + +struct ipw_hardware *ipwireless_hardware_create(void) +{ + int i; + struct ipw_hardware *hw = + kzalloc(sizeof(struct ipw_hardware), GFP_KERNEL); + + if (!hw) + return NULL; + + hw->irq = -1; + hw->initializing = 1; + hw->tx_ready = 1; + hw->rx_bytes_queued = 0; + hw->rx_pool_size = 0; + hw->last_memtx_serial = (unsigned short) 0xffff; + for (i = 0; i < NL_NUM_OF_PRIORITIES; i++) + INIT_LIST_HEAD(&hw->tx_queue[i]); + + INIT_LIST_HEAD(&hw->rx_queue); + INIT_LIST_HEAD(&hw->rx_pool); + spin_lock_init(&hw->lock); + tasklet_init(&hw->tasklet, ipwireless_do_tasklet, (unsigned long) hw); + INIT_WORK(&hw->work_rx, ipw_receive_data_work); + setup_timer(&hw->setup_timer, ipwireless_setup_timer, + (unsigned long) hw); + + return hw; +} + +void ipwireless_init_hardware_v1(struct ipw_hardware *hw, + unsigned int base_port, + void __iomem *attr_memory, + void __iomem *common_memory, + int is_v2_card, + void (*reboot_callback) (void *data), + void *reboot_callback_data) +{ + if (hw->removed) { + hw->removed = 0; + enable_irq(hw->irq); + } + hw->base_port = base_port; + hw->hw_version = (is_v2_card ? HW_VERSION_2 : HW_VERSION_1); + hw->ll_mtu = (hw->hw_version == HW_VERSION_1 ? LL_MTU_V1 : LL_MTU_V2); + hw->memregs_CCR = (struct MEMCCR __iomem *) + ((unsigned short __iomem *) attr_memory + 0x200); + hw->memory_info_regs = (struct MEMINFREG __iomem *) common_memory; + hw->memreg_tx = &hw->memory_info_regs->memreg_tx_new; + hw->reboot_callback = reboot_callback; + hw->reboot_callback_data = reboot_callback_data; +} + +void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw) +{ + hw->initializing = 1; + hw->init_loops = 0; + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": waiting for card to start up...\n"); + ipwireless_setup_timer((unsigned long) hw); +} + +static void ipwireless_setup_timer(unsigned long data) +{ + struct ipw_hardware *hw = (struct ipw_hardware *) data; + + hw->init_loops++; + + if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY && + hw->hw_version == HW_VERSION_2 && + hw->memreg_tx == &hw->memory_info_regs->memreg_tx_new) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": failed to startup using TX2, trying TX\n"); + + hw->memreg_tx = &hw->memory_info_regs->memreg_tx_old; + hw->init_loops = 0; + } + /* Give up after a certain number of retries */ + if (hw->init_loops == TL_SETUP_MAX_VERSION_QRY) { + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": card failed to start up!\n"); + hw->initializing = 0; + } else { + /* Do not attempt to write to the board if it is not present. */ + if (is_card_present(hw)) { + unsigned long flags; + + spin_lock_irqsave(&hw->lock, flags); + hw->to_setup = 1; + hw->tx_ready = 1; + spin_unlock_irqrestore(&hw->lock, flags); + tasklet_schedule(&hw->tasklet); + } + + mod_timer(&hw->setup_timer, + jiffies + msecs_to_jiffies(TL_SETUP_VERSION_QRY_TMO)); + } +} + +/* + * Stop any interrupts from executing so that, once this function returns, + * other layers of the driver can be sure they won't get any more callbacks. + * Thus must be called on a proper process context. + */ +void ipwireless_stop_interrupts(struct ipw_hardware *hw) +{ + if (!hw->shutting_down) { + /* Tell everyone we are going down. */ + hw->shutting_down = 1; + del_timer(&hw->setup_timer); + + /* Prevent the hardware from sending any more interrupts */ + do_close_hardware(hw); + } +} + +void ipwireless_hardware_free(struct ipw_hardware *hw) +{ + int i; + struct ipw_rx_packet *rp, *rq; + struct ipw_tx_packet *tp, *tq; + + ipwireless_stop_interrupts(hw); + + flush_work_sync(&hw->work_rx); + + for (i = 0; i < NL_NUM_OF_ADDRESSES; i++) + if (hw->packet_assembler[i] != NULL) + kfree(hw->packet_assembler[i]); + + for (i = 0; i < NL_NUM_OF_PRIORITIES; i++) + list_for_each_entry_safe(tp, tq, &hw->tx_queue[i], queue) { + list_del(&tp->queue); + kfree(tp); + } + + list_for_each_entry_safe(rp, rq, &hw->rx_queue, queue) { + list_del(&rp->queue); + kfree(rp); + } + + list_for_each_entry_safe(rp, rq, &hw->rx_pool, queue) { + list_del(&rp->queue); + kfree(rp); + } + kfree(hw); +} + +/* + * Associate the specified network with this hardware, so it will receive events + * from it. + */ +void ipwireless_associate_network(struct ipw_hardware *hw, + struct ipw_network *network) +{ + hw->network = network; +} diff --git a/drivers/tty/ipwireless/hardware.h b/drivers/tty/ipwireless/hardware.h new file mode 100644 index 000000000000..90a8590e43b0 --- /dev/null +++ b/drivers/tty/ipwireless/hardware.h @@ -0,0 +1,62 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#ifndef _IPWIRELESS_CS_HARDWARE_H_ +#define _IPWIRELESS_CS_HARDWARE_H_ + +#include +#include +#include + +#define IPW_CONTROL_LINE_CTS 0x0001 +#define IPW_CONTROL_LINE_DCD 0x0002 +#define IPW_CONTROL_LINE_DSR 0x0004 +#define IPW_CONTROL_LINE_RI 0x0008 +#define IPW_CONTROL_LINE_DTR 0x0010 +#define IPW_CONTROL_LINE_RTS 0x0020 + +struct ipw_hardware; +struct ipw_network; + +struct ipw_hardware *ipwireless_hardware_create(void); +void ipwireless_hardware_free(struct ipw_hardware *hw); +irqreturn_t ipwireless_interrupt(int irq, void *dev_id); +int ipwireless_set_DTR(struct ipw_hardware *hw, unsigned int channel_idx, + int state); +int ipwireless_set_RTS(struct ipw_hardware *hw, unsigned int channel_idx, + int state); +int ipwireless_send_packet(struct ipw_hardware *hw, + unsigned int channel_idx, + const unsigned char *data, + unsigned int length, + void (*packet_sent_callback) (void *cb, + unsigned int length), + void *sent_cb_data); +void ipwireless_associate_network(struct ipw_hardware *hw, + struct ipw_network *net); +void ipwireless_stop_interrupts(struct ipw_hardware *hw); +void ipwireless_init_hardware_v1(struct ipw_hardware *hw, + unsigned int base_port, + void __iomem *attr_memory, + void __iomem *common_memory, + int is_v2_card, + void (*reboot_cb) (void *data), + void *reboot_cb_data); +void ipwireless_init_hardware_v2_v3(struct ipw_hardware *hw); +void ipwireless_sleep(unsigned int tenths); + +#endif diff --git a/drivers/tty/ipwireless/main.c b/drivers/tty/ipwireless/main.c new file mode 100644 index 000000000000..94b8eb4d691d --- /dev/null +++ b/drivers/tty/ipwireless/main.c @@ -0,0 +1,335 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#include "hardware.h" +#include "network.h" +#include "main.h" +#include "tty.h" + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +static struct pcmcia_device_id ipw_ids[] = { + PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100), + PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200), + PCMCIA_DEVICE_NULL +}; +MODULE_DEVICE_TABLE(pcmcia, ipw_ids); + +static void ipwireless_detach(struct pcmcia_device *link); + +/* + * Module params + */ +/* Debug mode: more verbose, print sent/recv bytes */ +int ipwireless_debug; +int ipwireless_loopback; +int ipwireless_out_queue = 10; + +module_param_named(debug, ipwireless_debug, int, 0); +module_param_named(loopback, ipwireless_loopback, int, 0); +module_param_named(out_queue, ipwireless_out_queue, int, 0); +MODULE_PARM_DESC(debug, "switch on debug messages [0]"); +MODULE_PARM_DESC(loopback, + "debug: enable ras_raw channel [0]"); +MODULE_PARM_DESC(out_queue, "debug: set size of outgoing PPP queue [10]"); + +/* Executes in process context. */ +static void signalled_reboot_work(struct work_struct *work_reboot) +{ + struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev, + work_reboot); + struct pcmcia_device *link = ipw->link; + pcmcia_reset_card(link->socket); +} + +static void signalled_reboot_callback(void *callback_data) +{ + struct ipw_dev *ipw = (struct ipw_dev *) callback_data; + + /* Delegate to process context. */ + schedule_work(&ipw->work_reboot); +} + +static int ipwireless_probe(struct pcmcia_device *p_dev, void *priv_data) +{ + struct ipw_dev *ipw = priv_data; + struct resource *io_resource; + int ret; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; + + /* 0x40 causes it to generate level mode interrupts. */ + /* 0x04 enables IREQ pin. */ + p_dev->config_index |= 0x44; + p_dev->io_lines = 16; + ret = pcmcia_request_io(p_dev); + if (ret) + return ret; + + io_resource = request_region(p_dev->resource[0]->start, + resource_size(p_dev->resource[0]), + IPWIRELESS_PCCARD_NAME); + + p_dev->resource[2]->flags |= + WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE; + + ret = pcmcia_request_window(p_dev, p_dev->resource[2], 0); + if (ret != 0) + goto exit1; + + ret = pcmcia_map_mem_page(p_dev, p_dev->resource[2], p_dev->card_addr); + if (ret != 0) + goto exit2; + + ipw->is_v2_card = resource_size(p_dev->resource[2]) == 0x100; + + ipw->attr_memory = ioremap(p_dev->resource[2]->start, + resource_size(p_dev->resource[2])); + request_mem_region(p_dev->resource[2]->start, + resource_size(p_dev->resource[2]), + IPWIRELESS_PCCARD_NAME); + + p_dev->resource[3]->flags |= WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | + WIN_ENABLE; + p_dev->resource[3]->end = 0; /* this used to be 0x1000 */ + ret = pcmcia_request_window(p_dev, p_dev->resource[3], 0); + if (ret != 0) + goto exit2; + + ret = pcmcia_map_mem_page(p_dev, p_dev->resource[3], 0); + if (ret != 0) + goto exit3; + + ipw->attr_memory = ioremap(p_dev->resource[3]->start, + resource_size(p_dev->resource[3])); + request_mem_region(p_dev->resource[3]->start, + resource_size(p_dev->resource[3]), + IPWIRELESS_PCCARD_NAME); + + return 0; + +exit3: +exit2: + if (ipw->common_memory) { + release_mem_region(p_dev->resource[2]->start, + resource_size(p_dev->resource[2])); + iounmap(ipw->common_memory); + } +exit1: + release_resource(io_resource); + pcmcia_disable_device(p_dev); + return -1; +} + +static int config_ipwireless(struct ipw_dev *ipw) +{ + struct pcmcia_device *link = ipw->link; + int ret = 0; + + ipw->is_v2_card = 0; + link->config_flags |= CONF_AUTO_SET_IO | CONF_AUTO_SET_IOMEM | + CONF_ENABLE_IRQ; + + ret = pcmcia_loop_config(link, ipwireless_probe, ipw); + if (ret != 0) + return ret; + + INIT_WORK(&ipw->work_reboot, signalled_reboot_work); + + ipwireless_init_hardware_v1(ipw->hardware, link->resource[0]->start, + ipw->attr_memory, ipw->common_memory, + ipw->is_v2_card, signalled_reboot_callback, + ipw); + + ret = pcmcia_request_irq(link, ipwireless_interrupt); + if (ret != 0) + goto exit; + + printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n", + ipw->is_v2_card ? "V2/V3" : "V1"); + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": I/O ports %pR, irq %d\n", link->resource[0], + (unsigned int) link->irq); + if (ipw->attr_memory && ipw->common_memory) + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": attr memory %pR, common memory %pR\n", + link->resource[3], + link->resource[2]); + + ipw->network = ipwireless_network_create(ipw->hardware); + if (!ipw->network) + goto exit; + + ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network); + if (!ipw->tty) + goto exit; + + ipwireless_init_hardware_v2_v3(ipw->hardware); + + /* + * Do the RequestConfiguration last, because it enables interrupts. + * Then we don't get any interrupts before we're ready for them. + */ + ret = pcmcia_enable_device(link); + if (ret != 0) + goto exit; + + return 0; + +exit: + if (ipw->common_memory) { + release_mem_region(link->resource[2]->start, + resource_size(link->resource[2])); + iounmap(ipw->common_memory); + } + if (ipw->attr_memory) { + release_mem_region(link->resource[3]->start, + resource_size(link->resource[3])); + iounmap(ipw->attr_memory); + } + pcmcia_disable_device(link); + return -1; +} + +static void release_ipwireless(struct ipw_dev *ipw) +{ + if (ipw->common_memory) { + release_mem_region(ipw->link->resource[2]->start, + resource_size(ipw->link->resource[2])); + iounmap(ipw->common_memory); + } + if (ipw->attr_memory) { + release_mem_region(ipw->link->resource[3]->start, + resource_size(ipw->link->resource[3])); + iounmap(ipw->attr_memory); + } + pcmcia_disable_device(ipw->link); +} + +/* + * ipwireless_attach() creates an "instance" of the driver, allocating + * local data structures for one device (one interface). The device + * is registered with Card Services. + * + * The pcmcia_device structure is initialized, but we don't actually + * configure the card at this point -- we wait until we receive a + * card insertion event. + */ +static int ipwireless_attach(struct pcmcia_device *link) +{ + struct ipw_dev *ipw; + int ret; + + ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL); + if (!ipw) + return -ENOMEM; + + ipw->link = link; + link->priv = ipw; + + ipw->hardware = ipwireless_hardware_create(); + if (!ipw->hardware) { + kfree(ipw); + return -ENOMEM; + } + /* RegisterClient will call config_ipwireless */ + + ret = config_ipwireless(ipw); + + if (ret != 0) { + ipwireless_detach(link); + return ret; + } + + return 0; +} + +/* + * This deletes a driver "instance". The device is de-registered with + * Card Services. If it has been released, all local data structures + * are freed. Otherwise, the structures will be freed when the device + * is released. + */ +static void ipwireless_detach(struct pcmcia_device *link) +{ + struct ipw_dev *ipw = link->priv; + + release_ipwireless(ipw); + + if (ipw->tty != NULL) + ipwireless_tty_free(ipw->tty); + if (ipw->network != NULL) + ipwireless_network_free(ipw->network); + if (ipw->hardware != NULL) + ipwireless_hardware_free(ipw->hardware); + kfree(ipw); +} + +static struct pcmcia_driver me = { + .owner = THIS_MODULE, + .probe = ipwireless_attach, + .remove = ipwireless_detach, + .name = IPWIRELESS_PCCARD_NAME, + .id_table = ipw_ids +}; + +/* + * Module insertion : initialisation of the module. + * Register the card with cardmgr... + */ +static int __init init_ipwireless(void) +{ + int ret; + + ret = ipwireless_tty_init(); + if (ret != 0) + return ret; + + ret = pcmcia_register_driver(&me); + if (ret != 0) + ipwireless_tty_release(); + + return ret; +} + +/* + * Module removal + */ +static void __exit exit_ipwireless(void) +{ + pcmcia_unregister_driver(&me); + ipwireless_tty_release(); +} + +module_init(init_ipwireless); +module_exit(exit_ipwireless); + +MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR); +MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION); +MODULE_LICENSE("GPL"); diff --git a/drivers/tty/ipwireless/main.h b/drivers/tty/ipwireless/main.h new file mode 100644 index 000000000000..f2cbb116bccb --- /dev/null +++ b/drivers/tty/ipwireless/main.h @@ -0,0 +1,68 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#ifndef _IPWIRELESS_CS_H_ +#define _IPWIRELESS_CS_H_ + +#include +#include + +#include +#include + +#include "hardware.h" + +#define IPWIRELESS_PCCARD_NAME "ipwireless" +#define IPWIRELESS_PCMCIA_VERSION "1.1" +#define IPWIRELESS_PCMCIA_AUTHOR \ + "Stephen Blackheath, Ben Martel, Jiri Kosina and David Sterba" + +#define IPWIRELESS_TX_QUEUE_SIZE 262144 +#define IPWIRELESS_RX_QUEUE_SIZE 262144 + +#define IPWIRELESS_STATE_DEBUG + +struct ipw_hardware; +struct ipw_network; +struct ipw_tty; + +struct ipw_dev { + struct pcmcia_device *link; + int is_v2_card; + + void __iomem *attr_memory; + + void __iomem *common_memory; + + /* Reference to attribute memory, containing CIS data */ + void *attribute_memory; + + /* Hardware context */ + struct ipw_hardware *hardware; + /* Network layer context */ + struct ipw_network *network; + /* TTY device context */ + struct ipw_tty *tty; + struct work_struct work_reboot; +}; + +/* Module parametres */ +extern int ipwireless_debug; +extern int ipwireless_loopback; +extern int ipwireless_out_queue; + +#endif diff --git a/drivers/tty/ipwireless/network.c b/drivers/tty/ipwireless/network.c new file mode 100644 index 000000000000..f7daeea598e4 --- /dev/null +++ b/drivers/tty/ipwireless/network.c @@ -0,0 +1,508 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "network.h" +#include "hardware.h" +#include "main.h" +#include "tty.h" + +#define MAX_ASSOCIATED_TTYS 2 + +#define SC_RCV_BITS (SC_RCV_B7_1|SC_RCV_B7_0|SC_RCV_ODDP|SC_RCV_EVNP) + +struct ipw_network { + /* Hardware context, used for calls to hardware layer. */ + struct ipw_hardware *hardware; + /* Context for kernel 'generic_ppp' functionality */ + struct ppp_channel *ppp_channel; + /* tty context connected with IPW console */ + struct ipw_tty *associated_ttys[NO_OF_IPW_CHANNELS][MAX_ASSOCIATED_TTYS]; + /* True if ppp needs waking up once we're ready to xmit */ + int ppp_blocked; + /* Number of packets queued up in hardware module. */ + int outgoing_packets_queued; + /* Spinlock to avoid interrupts during shutdown */ + spinlock_t lock; + struct mutex close_lock; + + /* PPP ioctl data, not actually used anywere */ + unsigned int flags; + unsigned int rbits; + u32 xaccm[8]; + u32 raccm; + int mru; + + int shutting_down; + unsigned int ras_control_lines; + + struct work_struct work_go_online; + struct work_struct work_go_offline; +}; + +static void notify_packet_sent(void *callback_data, unsigned int packet_length) +{ + struct ipw_network *network = callback_data; + unsigned long flags; + + spin_lock_irqsave(&network->lock, flags); + network->outgoing_packets_queued--; + if (network->ppp_channel != NULL) { + if (network->ppp_blocked) { + network->ppp_blocked = 0; + spin_unlock_irqrestore(&network->lock, flags); + ppp_output_wakeup(network->ppp_channel); + if (ipwireless_debug) + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME + ": ppp unblocked\n"); + } else + spin_unlock_irqrestore(&network->lock, flags); + } else + spin_unlock_irqrestore(&network->lock, flags); +} + +/* + * Called by the ppp system when it has a packet to send to the hardware. + */ +static int ipwireless_ppp_start_xmit(struct ppp_channel *ppp_channel, + struct sk_buff *skb) +{ + struct ipw_network *network = ppp_channel->private; + unsigned long flags; + + spin_lock_irqsave(&network->lock, flags); + if (network->outgoing_packets_queued < ipwireless_out_queue) { + unsigned char *buf; + static unsigned char header[] = { + PPP_ALLSTATIONS, /* 0xff */ + PPP_UI, /* 0x03 */ + }; + int ret; + + network->outgoing_packets_queued++; + spin_unlock_irqrestore(&network->lock, flags); + + /* + * If we have the requested amount of headroom in the skb we + * were handed, then we can add the header efficiently. + */ + if (skb_headroom(skb) >= 2) { + memcpy(skb_push(skb, 2), header, 2); + ret = ipwireless_send_packet(network->hardware, + IPW_CHANNEL_RAS, skb->data, + skb->len, + notify_packet_sent, + network); + if (ret == -1) { + skb_pull(skb, 2); + return 0; + } + } else { + /* Otherwise (rarely) we do it inefficiently. */ + buf = kmalloc(skb->len + 2, GFP_ATOMIC); + if (!buf) + return 0; + memcpy(buf + 2, skb->data, skb->len); + memcpy(buf, header, 2); + ret = ipwireless_send_packet(network->hardware, + IPW_CHANNEL_RAS, buf, + skb->len + 2, + notify_packet_sent, + network); + kfree(buf); + if (ret == -1) + return 0; + } + kfree_skb(skb); + return 1; + } else { + /* + * Otherwise reject the packet, and flag that the ppp system + * needs to be unblocked once we are ready to send. + */ + network->ppp_blocked = 1; + spin_unlock_irqrestore(&network->lock, flags); + if (ipwireless_debug) + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": ppp blocked\n"); + return 0; + } +} + +/* Handle an ioctl call that has come in via ppp. (copy of ppp_async_ioctl() */ +static int ipwireless_ppp_ioctl(struct ppp_channel *ppp_channel, + unsigned int cmd, unsigned long arg) +{ + struct ipw_network *network = ppp_channel->private; + int err, val; + u32 accm[8]; + int __user *user_arg = (int __user *) arg; + + err = -EFAULT; + switch (cmd) { + case PPPIOCGFLAGS: + val = network->flags | network->rbits; + if (put_user(val, user_arg)) + break; + err = 0; + break; + + case PPPIOCSFLAGS: + if (get_user(val, user_arg)) + break; + network->flags = val & ~SC_RCV_BITS; + network->rbits = val & SC_RCV_BITS; + err = 0; + break; + + case PPPIOCGASYNCMAP: + if (put_user(network->xaccm[0], user_arg)) + break; + err = 0; + break; + + case PPPIOCSASYNCMAP: + if (get_user(network->xaccm[0], user_arg)) + break; + err = 0; + break; + + case PPPIOCGRASYNCMAP: + if (put_user(network->raccm, user_arg)) + break; + err = 0; + break; + + case PPPIOCSRASYNCMAP: + if (get_user(network->raccm, user_arg)) + break; + err = 0; + break; + + case PPPIOCGXASYNCMAP: + if (copy_to_user((void __user *) arg, network->xaccm, + sizeof(network->xaccm))) + break; + err = 0; + break; + + case PPPIOCSXASYNCMAP: + if (copy_from_user(accm, (void __user *) arg, sizeof(accm))) + break; + accm[2] &= ~0x40000000U; /* can't escape 0x5e */ + accm[3] |= 0x60000000U; /* must escape 0x7d, 0x7e */ + memcpy(network->xaccm, accm, sizeof(network->xaccm)); + err = 0; + break; + + case PPPIOCGMRU: + if (put_user(network->mru, user_arg)) + break; + err = 0; + break; + + case PPPIOCSMRU: + if (get_user(val, user_arg)) + break; + if (val < PPP_MRU) + val = PPP_MRU; + network->mru = val; + err = 0; + break; + + default: + err = -ENOTTY; + } + + return err; +} + +static const struct ppp_channel_ops ipwireless_ppp_channel_ops = { + .start_xmit = ipwireless_ppp_start_xmit, + .ioctl = ipwireless_ppp_ioctl +}; + +static void do_go_online(struct work_struct *work_go_online) +{ + struct ipw_network *network = + container_of(work_go_online, struct ipw_network, + work_go_online); + unsigned long flags; + + spin_lock_irqsave(&network->lock, flags); + if (!network->ppp_channel) { + struct ppp_channel *channel; + + spin_unlock_irqrestore(&network->lock, flags); + channel = kzalloc(sizeof(struct ppp_channel), GFP_KERNEL); + if (!channel) { + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": unable to allocate PPP channel\n"); + return; + } + channel->private = network; + channel->mtu = 16384; /* Wild guess */ + channel->hdrlen = 2; + channel->ops = &ipwireless_ppp_channel_ops; + + network->flags = 0; + network->rbits = 0; + network->mru = PPP_MRU; + memset(network->xaccm, 0, sizeof(network->xaccm)); + network->xaccm[0] = ~0U; + network->xaccm[3] = 0x60000000U; + network->raccm = ~0U; + ppp_register_channel(channel); + spin_lock_irqsave(&network->lock, flags); + network->ppp_channel = channel; + } + spin_unlock_irqrestore(&network->lock, flags); +} + +static void do_go_offline(struct work_struct *work_go_offline) +{ + struct ipw_network *network = + container_of(work_go_offline, struct ipw_network, + work_go_offline); + unsigned long flags; + + mutex_lock(&network->close_lock); + spin_lock_irqsave(&network->lock, flags); + if (network->ppp_channel != NULL) { + struct ppp_channel *channel = network->ppp_channel; + + network->ppp_channel = NULL; + spin_unlock_irqrestore(&network->lock, flags); + mutex_unlock(&network->close_lock); + ppp_unregister_channel(channel); + } else { + spin_unlock_irqrestore(&network->lock, flags); + mutex_unlock(&network->close_lock); + } +} + +void ipwireless_network_notify_control_line_change(struct ipw_network *network, + unsigned int channel_idx, + unsigned int control_lines, + unsigned int changed_mask) +{ + int i; + + if (channel_idx == IPW_CHANNEL_RAS) + network->ras_control_lines = control_lines; + + for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) { + struct ipw_tty *tty = + network->associated_ttys[channel_idx][i]; + + /* + * If it's associated with a tty (other than the RAS channel + * when we're online), then send the data to that tty. The RAS + * channel's data is handled above - it always goes through + * ppp_generic. + */ + if (tty) + ipwireless_tty_notify_control_line_change(tty, + channel_idx, + control_lines, + changed_mask); + } +} + +/* + * Some versions of firmware stuff packets with 0xff 0x03 (PPP: ALLSTATIONS, UI) + * bytes, which are required on sent packet, but not always present on received + * packets + */ +static struct sk_buff *ipw_packet_received_skb(unsigned char *data, + unsigned int length) +{ + struct sk_buff *skb; + + if (length > 2 && data[0] == PPP_ALLSTATIONS && data[1] == PPP_UI) { + length -= 2; + data += 2; + } + + skb = dev_alloc_skb(length + 4); + skb_reserve(skb, 2); + memcpy(skb_put(skb, length), data, length); + + return skb; +} + +void ipwireless_network_packet_received(struct ipw_network *network, + unsigned int channel_idx, + unsigned char *data, + unsigned int length) +{ + int i; + unsigned long flags; + + for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) { + struct ipw_tty *tty = network->associated_ttys[channel_idx][i]; + + if (!tty) + continue; + + /* + * If it's associated with a tty (other than the RAS channel + * when we're online), then send the data to that tty. The RAS + * channel's data is handled above - it always goes through + * ppp_generic. + */ + if (channel_idx == IPW_CHANNEL_RAS + && (network->ras_control_lines & + IPW_CONTROL_LINE_DCD) != 0 + && ipwireless_tty_is_modem(tty)) { + /* + * If data came in on the RAS channel and this tty is + * the modem tty, and we are online, then we send it to + * the PPP layer. + */ + mutex_lock(&network->close_lock); + spin_lock_irqsave(&network->lock, flags); + if (network->ppp_channel != NULL) { + struct sk_buff *skb; + + spin_unlock_irqrestore(&network->lock, + flags); + + /* Send the data to the ppp_generic module. */ + skb = ipw_packet_received_skb(data, length); + ppp_input(network->ppp_channel, skb); + } else + spin_unlock_irqrestore(&network->lock, + flags); + mutex_unlock(&network->close_lock); + } + /* Otherwise we send it out the tty. */ + else + ipwireless_tty_received(tty, data, length); + } +} + +struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw) +{ + struct ipw_network *network = + kzalloc(sizeof(struct ipw_network), GFP_ATOMIC); + + if (!network) + return NULL; + + spin_lock_init(&network->lock); + mutex_init(&network->close_lock); + + network->hardware = hw; + + INIT_WORK(&network->work_go_online, do_go_online); + INIT_WORK(&network->work_go_offline, do_go_offline); + + ipwireless_associate_network(hw, network); + + return network; +} + +void ipwireless_network_free(struct ipw_network *network) +{ + network->shutting_down = 1; + + ipwireless_ppp_close(network); + flush_work_sync(&network->work_go_online); + flush_work_sync(&network->work_go_offline); + + ipwireless_stop_interrupts(network->hardware); + ipwireless_associate_network(network->hardware, NULL); + + kfree(network); +} + +void ipwireless_associate_network_tty(struct ipw_network *network, + unsigned int channel_idx, + struct ipw_tty *tty) +{ + int i; + + for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) + if (network->associated_ttys[channel_idx][i] == NULL) { + network->associated_ttys[channel_idx][i] = tty; + break; + } +} + +void ipwireless_disassociate_network_ttys(struct ipw_network *network, + unsigned int channel_idx) +{ + int i; + + for (i = 0; i < MAX_ASSOCIATED_TTYS; i++) + network->associated_ttys[channel_idx][i] = NULL; +} + +void ipwireless_ppp_open(struct ipw_network *network) +{ + if (ipwireless_debug) + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": online\n"); + schedule_work(&network->work_go_online); +} + +void ipwireless_ppp_close(struct ipw_network *network) +{ + /* Disconnect from the wireless network. */ + if (ipwireless_debug) + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME ": offline\n"); + schedule_work(&network->work_go_offline); +} + +int ipwireless_ppp_channel_index(struct ipw_network *network) +{ + int ret = -1; + unsigned long flags; + + spin_lock_irqsave(&network->lock, flags); + if (network->ppp_channel != NULL) + ret = ppp_channel_index(network->ppp_channel); + spin_unlock_irqrestore(&network->lock, flags); + + return ret; +} + +int ipwireless_ppp_unit_number(struct ipw_network *network) +{ + int ret = -1; + unsigned long flags; + + spin_lock_irqsave(&network->lock, flags); + if (network->ppp_channel != NULL) + ret = ppp_unit_number(network->ppp_channel); + spin_unlock_irqrestore(&network->lock, flags); + + return ret; +} + +int ipwireless_ppp_mru(const struct ipw_network *network) +{ + return network->mru; +} diff --git a/drivers/tty/ipwireless/network.h b/drivers/tty/ipwireless/network.h new file mode 100644 index 000000000000..561f765b3334 --- /dev/null +++ b/drivers/tty/ipwireless/network.h @@ -0,0 +1,53 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#ifndef _IPWIRELESS_CS_NETWORK_H_ +#define _IPWIRELESS_CS_NETWORK_H_ + +#include + +struct ipw_network; +struct ipw_tty; +struct ipw_hardware; + +/* Definitions of the different channels on the PCMCIA UE */ +#define IPW_CHANNEL_RAS 0 +#define IPW_CHANNEL_DIALLER 1 +#define IPW_CHANNEL_CONSOLE 2 +#define NO_OF_IPW_CHANNELS 5 + +void ipwireless_network_notify_control_line_change(struct ipw_network *net, + unsigned int channel_idx, unsigned int control_lines, + unsigned int control_mask); +void ipwireless_network_packet_received(struct ipw_network *net, + unsigned int channel_idx, unsigned char *data, + unsigned int length); +struct ipw_network *ipwireless_network_create(struct ipw_hardware *hw); +void ipwireless_network_free(struct ipw_network *net); +void ipwireless_associate_network_tty(struct ipw_network *net, + unsigned int channel_idx, struct ipw_tty *tty); +void ipwireless_disassociate_network_ttys(struct ipw_network *net, + unsigned int channel_idx); + +void ipwireless_ppp_open(struct ipw_network *net); + +void ipwireless_ppp_close(struct ipw_network *net); +int ipwireless_ppp_channel_index(struct ipw_network *net); +int ipwireless_ppp_unit_number(struct ipw_network *net); +int ipwireless_ppp_mru(const struct ipw_network *net); + +#endif diff --git a/drivers/tty/ipwireless/setup_protocol.h b/drivers/tty/ipwireless/setup_protocol.h new file mode 100644 index 000000000000..9d6bcc77c73c --- /dev/null +++ b/drivers/tty/ipwireless/setup_protocol.h @@ -0,0 +1,108 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#ifndef _IPWIRELESS_CS_SETUP_PROTOCOL_H_ +#define _IPWIRELESS_CS_SETUP_PROTOCOL_H_ + +/* Version of the setup protocol and transport protocols */ +#define TL_SETUP_VERSION 1 + +#define TL_SETUP_VERSION_QRY_TMO 1000 +#define TL_SETUP_MAX_VERSION_QRY 30 + +/* Message numbers 0-9 are obsoleted and must not be reused! */ +#define TL_SETUP_SIGNO_GET_VERSION_QRY 10 +#define TL_SETUP_SIGNO_GET_VERSION_RSP 11 +#define TL_SETUP_SIGNO_CONFIG_MSG 12 +#define TL_SETUP_SIGNO_CONFIG_DONE_MSG 13 +#define TL_SETUP_SIGNO_OPEN_MSG 14 +#define TL_SETUP_SIGNO_CLOSE_MSG 15 + +#define TL_SETUP_SIGNO_INFO_MSG 20 +#define TL_SETUP_SIGNO_INFO_MSG_ACK 21 + +#define TL_SETUP_SIGNO_REBOOT_MSG 22 +#define TL_SETUP_SIGNO_REBOOT_MSG_ACK 23 + +/* Synchronous start-messages */ +struct tl_setup_get_version_qry { + unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_QRY */ +} __attribute__ ((__packed__)); + +struct tl_setup_get_version_rsp { + unsigned char sig_no; /* TL_SETUP_SIGNO_GET_VERSION_RSP */ + unsigned char version; /* TL_SETUP_VERSION */ +} __attribute__ ((__packed__)); + +struct tl_setup_config_msg { + unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_MSG */ + unsigned char port_no; + unsigned char prio_data; + unsigned char prio_ctrl; +} __attribute__ ((__packed__)); + +struct tl_setup_config_done_msg { + unsigned char sig_no; /* TL_SETUP_SIGNO_CONFIG_DONE_MSG */ +} __attribute__ ((__packed__)); + +/* Asyncronous messages */ +struct tl_setup_open_msg { + unsigned char sig_no; /* TL_SETUP_SIGNO_OPEN_MSG */ + unsigned char port_no; +} __attribute__ ((__packed__)); + +struct tl_setup_close_msg { + unsigned char sig_no; /* TL_SETUP_SIGNO_CLOSE_MSG */ + unsigned char port_no; +} __attribute__ ((__packed__)); + +/* Driver type - for use in tl_setup_info_msg.driver_type */ +#define COMM_DRIVER 0 +#define NDISWAN_DRIVER 1 +#define NDISWAN_DRIVER_MAJOR_VERSION 2 +#define NDISWAN_DRIVER_MINOR_VERSION 0 + +/* + * It should not matter when this message comes over as we just store the + * results and send the ACK. + */ +struct tl_setup_info_msg { + unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG */ + unsigned char driver_type; + unsigned char major_version; + unsigned char minor_version; +} __attribute__ ((__packed__)); + +struct tl_setup_info_msgAck { + unsigned char sig_no; /* TL_SETUP_SIGNO_INFO_MSG_ACK */ +} __attribute__ ((__packed__)); + +struct TlSetupRebootMsgAck { + unsigned char sig_no; /* TL_SETUP_SIGNO_REBOOT_MSG_ACK */ +} __attribute__ ((__packed__)); + +/* Define a union of all the msgs that the driver can receive from the card.*/ +union ipw_setup_rx_msg { + unsigned char sig_no; + struct tl_setup_get_version_rsp version_rsp_msg; + struct tl_setup_open_msg open_msg; + struct tl_setup_close_msg close_msg; + struct tl_setup_info_msg InfoMsg; + struct tl_setup_info_msgAck info_msg_ack; +} __attribute__ ((__packed__)); + +#endif /* _IPWIRELESS_CS_SETUP_PROTOCOL_H_ */ diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c new file mode 100644 index 000000000000..ef92869502a7 --- /dev/null +++ b/drivers/tty/ipwireless/tty.c @@ -0,0 +1,679 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "tty.h" +#include "network.h" +#include "hardware.h" +#include "main.h" + +#define IPWIRELESS_PCMCIA_START (0) +#define IPWIRELESS_PCMCIA_MINORS (24) +#define IPWIRELESS_PCMCIA_MINOR_RANGE (8) + +#define TTYTYPE_MODEM (0) +#define TTYTYPE_MONITOR (1) +#define TTYTYPE_RAS_RAW (2) + +struct ipw_tty { + int index; + struct ipw_hardware *hardware; + unsigned int channel_idx; + unsigned int secondary_channel_idx; + int tty_type; + struct ipw_network *network; + struct tty_struct *linux_tty; + int open_count; + unsigned int control_lines; + struct mutex ipw_tty_mutex; + int tx_bytes_queued; + int closing; +}; + +static struct ipw_tty *ttys[IPWIRELESS_PCMCIA_MINORS]; + +static struct tty_driver *ipw_tty_driver; + +static char *tty_type_name(int tty_type) +{ + static char *channel_names[] = { + "modem", + "monitor", + "RAS-raw" + }; + + return channel_names[tty_type]; +} + +static void report_registering(struct ipw_tty *tty) +{ + char *iftype = tty_type_name(tty->tty_type); + + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": registering %s device ttyIPWp%d\n", iftype, tty->index); +} + +static void report_deregistering(struct ipw_tty *tty) +{ + char *iftype = tty_type_name(tty->tty_type); + + printk(KERN_INFO IPWIRELESS_PCCARD_NAME + ": deregistering %s device ttyIPWp%d\n", iftype, + tty->index); +} + +static struct ipw_tty *get_tty(int minor) +{ + if (minor < ipw_tty_driver->minor_start + || minor >= ipw_tty_driver->minor_start + + IPWIRELESS_PCMCIA_MINORS) + return NULL; + else { + int minor_offset = minor - ipw_tty_driver->minor_start; + + /* + * The 'ras_raw' channel is only available when 'loopback' mode + * is enabled. + * Number of minor starts with 16 (_RANGE * _RAS_RAW). + */ + if (!ipwireless_loopback && + minor_offset >= + IPWIRELESS_PCMCIA_MINOR_RANGE * TTYTYPE_RAS_RAW) + return NULL; + + return ttys[minor_offset]; + } +} + +static int ipw_open(struct tty_struct *linux_tty, struct file *filp) +{ + int minor = linux_tty->index; + struct ipw_tty *tty = get_tty(minor); + + if (!tty) + return -ENODEV; + + mutex_lock(&tty->ipw_tty_mutex); + + if (tty->closing) { + mutex_unlock(&tty->ipw_tty_mutex); + return -ENODEV; + } + if (tty->open_count == 0) + tty->tx_bytes_queued = 0; + + tty->open_count++; + + tty->linux_tty = linux_tty; + linux_tty->driver_data = tty; + linux_tty->low_latency = 1; + + if (tty->tty_type == TTYTYPE_MODEM) + ipwireless_ppp_open(tty->network); + + mutex_unlock(&tty->ipw_tty_mutex); + + return 0; +} + +static void do_ipw_close(struct ipw_tty *tty) +{ + tty->open_count--; + + if (tty->open_count == 0) { + struct tty_struct *linux_tty = tty->linux_tty; + + if (linux_tty != NULL) { + tty->linux_tty = NULL; + linux_tty->driver_data = NULL; + + if (tty->tty_type == TTYTYPE_MODEM) + ipwireless_ppp_close(tty->network); + } + } +} + +static void ipw_hangup(struct tty_struct *linux_tty) +{ + struct ipw_tty *tty = linux_tty->driver_data; + + if (!tty) + return; + + mutex_lock(&tty->ipw_tty_mutex); + if (tty->open_count == 0) { + mutex_unlock(&tty->ipw_tty_mutex); + return; + } + + do_ipw_close(tty); + + mutex_unlock(&tty->ipw_tty_mutex); +} + +static void ipw_close(struct tty_struct *linux_tty, struct file *filp) +{ + ipw_hangup(linux_tty); +} + +/* Take data received from hardware, and send it out the tty */ +void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, + unsigned int length) +{ + struct tty_struct *linux_tty; + int work = 0; + + mutex_lock(&tty->ipw_tty_mutex); + linux_tty = tty->linux_tty; + if (linux_tty == NULL) { + mutex_unlock(&tty->ipw_tty_mutex); + return; + } + + if (!tty->open_count) { + mutex_unlock(&tty->ipw_tty_mutex); + return; + } + mutex_unlock(&tty->ipw_tty_mutex); + + work = tty_insert_flip_string(linux_tty, data, length); + + if (work != length) + printk(KERN_DEBUG IPWIRELESS_PCCARD_NAME + ": %d chars not inserted to flip buffer!\n", + length - work); + + /* + * This may sleep if ->low_latency is set + */ + if (work) + tty_flip_buffer_push(linux_tty); +} + +static void ipw_write_packet_sent_callback(void *callback_data, + unsigned int packet_length) +{ + struct ipw_tty *tty = callback_data; + + /* + * Packet has been sent, so we subtract the number of bytes from our + * tally of outstanding TX bytes. + */ + tty->tx_bytes_queued -= packet_length; +} + +static int ipw_write(struct tty_struct *linux_tty, + const unsigned char *buf, int count) +{ + struct ipw_tty *tty = linux_tty->driver_data; + int room, ret; + + if (!tty) + return -ENODEV; + + mutex_lock(&tty->ipw_tty_mutex); + if (!tty->open_count) { + mutex_unlock(&tty->ipw_tty_mutex); + return -EINVAL; + } + + room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; + if (room < 0) + room = 0; + /* Don't allow caller to write any more than we have room for */ + if (count > room) + count = room; + + if (count == 0) { + mutex_unlock(&tty->ipw_tty_mutex); + return 0; + } + + ret = ipwireless_send_packet(tty->hardware, IPW_CHANNEL_RAS, + buf, count, + ipw_write_packet_sent_callback, tty); + if (ret == -1) { + mutex_unlock(&tty->ipw_tty_mutex); + return 0; + } + + tty->tx_bytes_queued += count; + mutex_unlock(&tty->ipw_tty_mutex); + + return count; +} + +static int ipw_write_room(struct tty_struct *linux_tty) +{ + struct ipw_tty *tty = linux_tty->driver_data; + int room; + + /* FIXME: Exactly how is the tty object locked here .. */ + if (!tty) + return -ENODEV; + + if (!tty->open_count) + return -EINVAL; + + room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued; + if (room < 0) + room = 0; + + return room; +} + +static int ipwireless_get_serial_info(struct ipw_tty *tty, + struct serial_struct __user *retinfo) +{ + struct serial_struct tmp; + + if (!retinfo) + return (-EFAULT); + + memset(&tmp, 0, sizeof(tmp)); + tmp.type = PORT_UNKNOWN; + tmp.line = tty->index; + tmp.port = 0; + tmp.irq = 0; + tmp.flags = 0; + tmp.baud_base = 115200; + tmp.close_delay = 0; + tmp.closing_wait = 0; + tmp.custom_divisor = 0; + tmp.hub6 = 0; + if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) + return -EFAULT; + + return 0; +} + +static int ipw_chars_in_buffer(struct tty_struct *linux_tty) +{ + struct ipw_tty *tty = linux_tty->driver_data; + + if (!tty) + return 0; + + if (!tty->open_count) + return 0; + + return tty->tx_bytes_queued; +} + +static int get_control_lines(struct ipw_tty *tty) +{ + unsigned int my = tty->control_lines; + unsigned int out = 0; + + if (my & IPW_CONTROL_LINE_RTS) + out |= TIOCM_RTS; + if (my & IPW_CONTROL_LINE_DTR) + out |= TIOCM_DTR; + if (my & IPW_CONTROL_LINE_CTS) + out |= TIOCM_CTS; + if (my & IPW_CONTROL_LINE_DSR) + out |= TIOCM_DSR; + if (my & IPW_CONTROL_LINE_DCD) + out |= TIOCM_CD; + + return out; +} + +static int set_control_lines(struct ipw_tty *tty, unsigned int set, + unsigned int clear) +{ + int ret; + + if (set & TIOCM_RTS) { + ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 1); + if (ret) + return ret; + if (tty->secondary_channel_idx != -1) { + ret = ipwireless_set_RTS(tty->hardware, + tty->secondary_channel_idx, 1); + if (ret) + return ret; + } + } + if (set & TIOCM_DTR) { + ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 1); + if (ret) + return ret; + if (tty->secondary_channel_idx != -1) { + ret = ipwireless_set_DTR(tty->hardware, + tty->secondary_channel_idx, 1); + if (ret) + return ret; + } + } + if (clear & TIOCM_RTS) { + ret = ipwireless_set_RTS(tty->hardware, tty->channel_idx, 0); + if (tty->secondary_channel_idx != -1) { + ret = ipwireless_set_RTS(tty->hardware, + tty->secondary_channel_idx, 0); + if (ret) + return ret; + } + } + if (clear & TIOCM_DTR) { + ret = ipwireless_set_DTR(tty->hardware, tty->channel_idx, 0); + if (tty->secondary_channel_idx != -1) { + ret = ipwireless_set_DTR(tty->hardware, + tty->secondary_channel_idx, 0); + if (ret) + return ret; + } + } + return 0; +} + +static int ipw_tiocmget(struct tty_struct *linux_tty) +{ + struct ipw_tty *tty = linux_tty->driver_data; + /* FIXME: Exactly how is the tty object locked here .. */ + + if (!tty) + return -ENODEV; + + if (!tty->open_count) + return -EINVAL; + + return get_control_lines(tty); +} + +static int +ipw_tiocmset(struct tty_struct *linux_tty, + unsigned int set, unsigned int clear) +{ + struct ipw_tty *tty = linux_tty->driver_data; + /* FIXME: Exactly how is the tty object locked here .. */ + + if (!tty) + return -ENODEV; + + if (!tty->open_count) + return -EINVAL; + + return set_control_lines(tty, set, clear); +} + +static int ipw_ioctl(struct tty_struct *linux_tty, + unsigned int cmd, unsigned long arg) +{ + struct ipw_tty *tty = linux_tty->driver_data; + + if (!tty) + return -ENODEV; + + if (!tty->open_count) + return -EINVAL; + + /* FIXME: Exactly how is the tty object locked here .. */ + + switch (cmd) { + case TIOCGSERIAL: + return ipwireless_get_serial_info(tty, (void __user *) arg); + + case TIOCSSERIAL: + return 0; /* Keeps the PCMCIA scripts happy. */ + } + + if (tty->tty_type == TTYTYPE_MODEM) { + switch (cmd) { + case PPPIOCGCHAN: + { + int chan = ipwireless_ppp_channel_index( + tty->network); + + if (chan < 0) + return -ENODEV; + if (put_user(chan, (int __user *) arg)) + return -EFAULT; + } + return 0; + + case PPPIOCGUNIT: + { + int unit = ipwireless_ppp_unit_number( + tty->network); + + if (unit < 0) + return -ENODEV; + if (put_user(unit, (int __user *) arg)) + return -EFAULT; + } + return 0; + + case FIONREAD: + { + int val = 0; + + if (put_user(val, (int __user *) arg)) + return -EFAULT; + } + return 0; + case TCFLSH: + return tty_perform_flush(linux_tty, arg); + } + } + return -ENOIOCTLCMD; +} + +static int add_tty(int j, + struct ipw_hardware *hardware, + struct ipw_network *network, int channel_idx, + int secondary_channel_idx, int tty_type) +{ + ttys[j] = kzalloc(sizeof(struct ipw_tty), GFP_KERNEL); + if (!ttys[j]) + return -ENOMEM; + ttys[j]->index = j; + ttys[j]->hardware = hardware; + ttys[j]->channel_idx = channel_idx; + ttys[j]->secondary_channel_idx = secondary_channel_idx; + ttys[j]->network = network; + ttys[j]->tty_type = tty_type; + mutex_init(&ttys[j]->ipw_tty_mutex); + + tty_register_device(ipw_tty_driver, j, NULL); + ipwireless_associate_network_tty(network, channel_idx, ttys[j]); + + if (secondary_channel_idx != -1) + ipwireless_associate_network_tty(network, + secondary_channel_idx, + ttys[j]); + if (get_tty(j + ipw_tty_driver->minor_start) == ttys[j]) + report_registering(ttys[j]); + return 0; +} + +struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hardware, + struct ipw_network *network) +{ + int i, j; + + for (i = 0; i < IPWIRELESS_PCMCIA_MINOR_RANGE; i++) { + int allfree = 1; + + for (j = i; j < IPWIRELESS_PCMCIA_MINORS; + j += IPWIRELESS_PCMCIA_MINOR_RANGE) + if (ttys[j] != NULL) { + allfree = 0; + break; + } + + if (allfree) { + j = i; + + if (add_tty(j, hardware, network, + IPW_CHANNEL_DIALLER, IPW_CHANNEL_RAS, + TTYTYPE_MODEM)) + return NULL; + + j += IPWIRELESS_PCMCIA_MINOR_RANGE; + if (add_tty(j, hardware, network, + IPW_CHANNEL_DIALLER, -1, + TTYTYPE_MONITOR)) + return NULL; + + j += IPWIRELESS_PCMCIA_MINOR_RANGE; + if (add_tty(j, hardware, network, + IPW_CHANNEL_RAS, -1, + TTYTYPE_RAS_RAW)) + return NULL; + + return ttys[i]; + } + } + return NULL; +} + +/* + * Must be called before ipwireless_network_free(). + */ +void ipwireless_tty_free(struct ipw_tty *tty) +{ + int j; + struct ipw_network *network = ttys[tty->index]->network; + + for (j = tty->index; j < IPWIRELESS_PCMCIA_MINORS; + j += IPWIRELESS_PCMCIA_MINOR_RANGE) { + struct ipw_tty *ttyj = ttys[j]; + + if (ttyj) { + mutex_lock(&ttyj->ipw_tty_mutex); + if (get_tty(j + ipw_tty_driver->minor_start) == ttyj) + report_deregistering(ttyj); + ttyj->closing = 1; + if (ttyj->linux_tty != NULL) { + mutex_unlock(&ttyj->ipw_tty_mutex); + tty_hangup(ttyj->linux_tty); + /* Wait till the tty_hangup has completed */ + flush_work_sync(&ttyj->linux_tty->hangup_work); + /* FIXME: Exactly how is the tty object locked here + against a parallel ioctl etc */ + mutex_lock(&ttyj->ipw_tty_mutex); + } + while (ttyj->open_count) + do_ipw_close(ttyj); + ipwireless_disassociate_network_ttys(network, + ttyj->channel_idx); + tty_unregister_device(ipw_tty_driver, j); + ttys[j] = NULL; + mutex_unlock(&ttyj->ipw_tty_mutex); + kfree(ttyj); + } + } +} + +static const struct tty_operations tty_ops = { + .open = ipw_open, + .close = ipw_close, + .hangup = ipw_hangup, + .write = ipw_write, + .write_room = ipw_write_room, + .ioctl = ipw_ioctl, + .chars_in_buffer = ipw_chars_in_buffer, + .tiocmget = ipw_tiocmget, + .tiocmset = ipw_tiocmset, +}; + +int ipwireless_tty_init(void) +{ + int result; + + ipw_tty_driver = alloc_tty_driver(IPWIRELESS_PCMCIA_MINORS); + if (!ipw_tty_driver) + return -ENOMEM; + + ipw_tty_driver->owner = THIS_MODULE; + ipw_tty_driver->driver_name = IPWIRELESS_PCCARD_NAME; + ipw_tty_driver->name = "ttyIPWp"; + ipw_tty_driver->major = 0; + ipw_tty_driver->minor_start = IPWIRELESS_PCMCIA_START; + ipw_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; + ipw_tty_driver->subtype = SERIAL_TYPE_NORMAL; + ipw_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + ipw_tty_driver->init_termios = tty_std_termios; + ipw_tty_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + ipw_tty_driver->init_termios.c_ispeed = 9600; + ipw_tty_driver->init_termios.c_ospeed = 9600; + tty_set_operations(ipw_tty_driver, &tty_ops); + result = tty_register_driver(ipw_tty_driver); + if (result) { + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": failed to register tty driver\n"); + put_tty_driver(ipw_tty_driver); + return result; + } + + return 0; +} + +void ipwireless_tty_release(void) +{ + int ret; + + ret = tty_unregister_driver(ipw_tty_driver); + put_tty_driver(ipw_tty_driver); + if (ret != 0) + printk(KERN_ERR IPWIRELESS_PCCARD_NAME + ": tty_unregister_driver failed with code %d\n", ret); +} + +int ipwireless_tty_is_modem(struct ipw_tty *tty) +{ + return tty->tty_type == TTYTYPE_MODEM; +} + +void +ipwireless_tty_notify_control_line_change(struct ipw_tty *tty, + unsigned int channel_idx, + unsigned int control_lines, + unsigned int changed_mask) +{ + unsigned int old_control_lines = tty->control_lines; + + tty->control_lines = (tty->control_lines & ~changed_mask) + | (control_lines & changed_mask); + + /* + * If DCD is de-asserted, we close the tty so pppd can tell that we + * have gone offline. + */ + if ((old_control_lines & IPW_CONTROL_LINE_DCD) + && !(tty->control_lines & IPW_CONTROL_LINE_DCD) + && tty->linux_tty) { + tty_hangup(tty->linux_tty); + } +} + diff --git a/drivers/tty/ipwireless/tty.h b/drivers/tty/ipwireless/tty.h new file mode 100644 index 000000000000..747b2d637860 --- /dev/null +++ b/drivers/tty/ipwireless/tty.h @@ -0,0 +1,45 @@ +/* + * IPWireless 3G PCMCIA Network Driver + * + * Original code + * by Stephen Blackheath , + * Ben Martel + * + * Copyrighted as follows: + * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) + * + * Various driver changes and rewrites, port to new kernels + * Copyright (C) 2006-2007 Jiri Kosina + * + * Misc code cleanups and updates + * Copyright (C) 2007 David Sterba + */ + +#ifndef _IPWIRELESS_CS_TTY_H_ +#define _IPWIRELESS_CS_TTY_H_ + +#include +#include + +#include +#include + +struct ipw_tty; +struct ipw_network; +struct ipw_hardware; + +int ipwireless_tty_init(void); +void ipwireless_tty_release(void); + +struct ipw_tty *ipwireless_tty_create(struct ipw_hardware *hw, + struct ipw_network *net); +void ipwireless_tty_free(struct ipw_tty *tty); +void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data, + unsigned int length); +int ipwireless_tty_is_modem(struct ipw_tty *tty); +void ipwireless_tty_notify_control_line_change(struct ipw_tty *tty, + unsigned int channel_idx, + unsigned int control_lines, + unsigned int changed_mask); + +#endif -- cgit v1.2.3 From 4a6514e6d096716fb7bedf238efaaca877e2a7e8 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 22 Feb 2011 16:57:21 -0800 Subject: tty: move obsolete and broken tty drivers to drivers/staging/tty/ As planned by Arnd Bergmann, this moves the following drivers to the drivers/staging/tty/ directory where they will be removed after 2.6.41 if no one steps up to claim them. epca epca ip2 istallion riscom8 serial167 specialix stallion Cc: Arnd Bergmann Cc: Alan Cox Cc: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- arch/m68k/Kconfig | 8 - drivers/char/Kconfig | 79 - drivers/char/Makefile | 7 - drivers/char/epca.c | 2784 --------------------- drivers/char/epca.h | 158 -- drivers/char/epcaconfig.h | 7 - drivers/char/ip2/Makefile | 8 - drivers/char/ip2/i2cmd.c | 210 -- drivers/char/ip2/i2cmd.h | 630 ----- drivers/char/ip2/i2ellis.c | 1403 ----------- drivers/char/ip2/i2ellis.h | 566 ----- drivers/char/ip2/i2hw.h | 652 ----- drivers/char/ip2/i2lib.c | 2214 ----------------- drivers/char/ip2/i2lib.h | 351 --- drivers/char/ip2/i2pack.h | 364 --- drivers/char/ip2/ip2.h | 107 - drivers/char/ip2/ip2ioctl.h | 35 - drivers/char/ip2/ip2main.c | 3234 ------------------------ drivers/char/ip2/ip2trace.h | 42 - drivers/char/ip2/ip2types.h | 57 - drivers/char/istallion.c | 4507 --------------------------------- drivers/char/riscom8.c | 1560 ------------ drivers/char/riscom8.h | 91 - drivers/char/riscom8_reg.h | 254 -- drivers/char/serial167.c | 2489 ------------------- drivers/char/specialix.c | 2368 ------------------ drivers/char/specialix_io8.h | 140 -- drivers/char/stallion.c | 4651 ----------------------------------- drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/tty/Kconfig | 87 + drivers/staging/tty/Makefile | 7 + drivers/staging/tty/TODO | 6 + drivers/staging/tty/epca.c | 2784 +++++++++++++++++++++ drivers/staging/tty/epca.h | 158 ++ drivers/staging/tty/epcaconfig.h | 7 + drivers/staging/tty/ip2/Makefile | 8 + drivers/staging/tty/ip2/i2cmd.c | 210 ++ drivers/staging/tty/ip2/i2cmd.h | 630 +++++ drivers/staging/tty/ip2/i2ellis.c | 1403 +++++++++++ drivers/staging/tty/ip2/i2ellis.h | 566 +++++ drivers/staging/tty/ip2/i2hw.h | 652 +++++ drivers/staging/tty/ip2/i2lib.c | 2214 +++++++++++++++++ drivers/staging/tty/ip2/i2lib.h | 351 +++ drivers/staging/tty/ip2/i2pack.h | 364 +++ drivers/staging/tty/ip2/ip2.h | 107 + drivers/staging/tty/ip2/ip2ioctl.h | 35 + drivers/staging/tty/ip2/ip2main.c | 3234 ++++++++++++++++++++++++ drivers/staging/tty/ip2/ip2trace.h | 42 + drivers/staging/tty/ip2/ip2types.h | 57 + drivers/staging/tty/istallion.c | 4507 +++++++++++++++++++++++++++++++++ drivers/staging/tty/riscom8.c | 1560 ++++++++++++ drivers/staging/tty/riscom8.h | 91 + drivers/staging/tty/riscom8_reg.h | 254 ++ drivers/staging/tty/serial167.c | 2489 +++++++++++++++++++ drivers/staging/tty/specialix.c | 2368 ++++++++++++++++++ drivers/staging/tty/specialix_io8.h | 140 ++ drivers/staging/tty/stallion.c | 4651 +++++++++++++++++++++++++++++++++++ 58 files changed, 28985 insertions(+), 28976 deletions(-) delete mode 100644 drivers/char/epca.c delete mode 100644 drivers/char/epca.h delete mode 100644 drivers/char/epcaconfig.h delete mode 100644 drivers/char/ip2/Makefile delete mode 100644 drivers/char/ip2/i2cmd.c delete mode 100644 drivers/char/ip2/i2cmd.h delete mode 100644 drivers/char/ip2/i2ellis.c delete mode 100644 drivers/char/ip2/i2ellis.h delete mode 100644 drivers/char/ip2/i2hw.h delete mode 100644 drivers/char/ip2/i2lib.c delete mode 100644 drivers/char/ip2/i2lib.h delete mode 100644 drivers/char/ip2/i2pack.h delete mode 100644 drivers/char/ip2/ip2.h delete mode 100644 drivers/char/ip2/ip2ioctl.h delete mode 100644 drivers/char/ip2/ip2main.c delete mode 100644 drivers/char/ip2/ip2trace.h delete mode 100644 drivers/char/ip2/ip2types.h delete mode 100644 drivers/char/istallion.c delete mode 100644 drivers/char/riscom8.c delete mode 100644 drivers/char/riscom8.h delete mode 100644 drivers/char/riscom8_reg.h delete mode 100644 drivers/char/serial167.c delete mode 100644 drivers/char/specialix.c delete mode 100644 drivers/char/specialix_io8.h delete mode 100644 drivers/char/stallion.c create mode 100644 drivers/staging/tty/Kconfig create mode 100644 drivers/staging/tty/Makefile create mode 100644 drivers/staging/tty/TODO create mode 100644 drivers/staging/tty/epca.c create mode 100644 drivers/staging/tty/epca.h create mode 100644 drivers/staging/tty/epcaconfig.h create mode 100644 drivers/staging/tty/ip2/Makefile create mode 100644 drivers/staging/tty/ip2/i2cmd.c create mode 100644 drivers/staging/tty/ip2/i2cmd.h create mode 100644 drivers/staging/tty/ip2/i2ellis.c create mode 100644 drivers/staging/tty/ip2/i2ellis.h create mode 100644 drivers/staging/tty/ip2/i2hw.h create mode 100644 drivers/staging/tty/ip2/i2lib.c create mode 100644 drivers/staging/tty/ip2/i2lib.h create mode 100644 drivers/staging/tty/ip2/i2pack.h create mode 100644 drivers/staging/tty/ip2/ip2.h create mode 100644 drivers/staging/tty/ip2/ip2ioctl.h create mode 100644 drivers/staging/tty/ip2/ip2main.c create mode 100644 drivers/staging/tty/ip2/ip2trace.h create mode 100644 drivers/staging/tty/ip2/ip2types.h create mode 100644 drivers/staging/tty/istallion.c create mode 100644 drivers/staging/tty/riscom8.c create mode 100644 drivers/staging/tty/riscom8.h create mode 100644 drivers/staging/tty/riscom8_reg.h create mode 100644 drivers/staging/tty/serial167.c create mode 100644 drivers/staging/tty/specialix.c create mode 100644 drivers/staging/tty/specialix_io8.h create mode 100644 drivers/staging/tty/stallion.c (limited to 'drivers/char') diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index bc9271b85759..a85e251c411f 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -554,14 +554,6 @@ config MVME147_SCC This is the driver for the serial ports on the Motorola MVME147 boards. Everyone using one of these boards should say Y here. -config SERIAL167 - bool "CD2401 support for MVME166/7 serial ports" - depends on MVME16x - help - This is the driver for the serial ports on the Motorola MVME166, - 167, and 172 boards. Everyone using one of these boards should say - Y here. - config MVME162_SCC bool "SCC support for MVME162 serial ports" depends on MVME16x && BROKEN diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 1adfac6a7b0b..7b8cf0295f6c 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -15,63 +15,6 @@ config DEVKMEM kind of kernel debugging operations. When in doubt, say "N". -config COMPUTONE - tristate "Computone IntelliPort Plus serial support" - depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) - ---help--- - This driver supports the entire family of Intelliport II/Plus - controllers with the exception of the MicroChannel controllers and - products previous to the Intelliport II. These are multiport cards, - which give you many serial ports. You would need something like this - to connect more than two modems to your Linux box, for instance in - order to become a dial-in server. If you have a card like that, say - Y here and read . - - To compile this driver as module, choose M here: the - module will be called ip2. - -config DIGIEPCA - tristate "Digiboard Intelligent Async Support" - depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) - ---help--- - This is a driver for Digi International's Xx, Xeve, and Xem series - of cards which provide multiple serial ports. You would need - something like this to connect more than two modems to your Linux - box, for instance in order to become a dial-in server. This driver - supports the original PC (ISA) boards as well as PCI, and EISA. If - you have a card like this, say Y here and read the file - . - - To compile this driver as a module, choose M here: the - module will be called epca. - -config RISCOM8 - tristate "SDL RISCom/8 card support" - depends on SERIAL_NONSTANDARD - help - This is a driver for the SDL Communications RISCom/8 multiport card, - which gives you many serial ports. You would need something like - this to connect more than two modems to your Linux box, for instance - in order to become a dial-in server. If you have a card like that, - say Y here and read the file . - - Also it's possible to say M here and compile this driver as kernel - loadable module; the module will be called riscom8. - -config SPECIALIX - tristate "Specialix IO8+ card support" - depends on SERIAL_NONSTANDARD - help - This is a driver for the Specialix IO8+ multiport card (both the - ISA and the PCI version) which gives you many serial ports. You - would need something like this to connect more than two modems to - your Linux box, for instance in order to become a dial-in server. - - If you have a card like that, say Y here and read the file - . Also it's possible to say - M here and compile this driver as kernel loadable module which will be - called specialix. - config SX tristate "Specialix SX (and SI) card support" depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) && BROKEN @@ -112,28 +55,6 @@ config STALDRV in this case. If you have never heard about all this, it's safe to say N. -config STALLION - tristate "Stallion EasyIO or EC8/32 support" - depends on STALDRV && (ISA || EISA || PCI) - help - If you have an EasyIO or EasyConnection 8/32 multiport Stallion - card, then this is for you; say Y. Make sure to read - . - - To compile this driver as a module, choose M here: the - module will be called stallion. - -config ISTALLION - tristate "Stallion EC8/64, ONboard, Brumby support" - depends on STALDRV && (ISA || EISA || PCI) - help - If you have an EasyConnection 8/64, ONboard, Brumby or Stallion - serial multiport card, say Y here. Make sure to read - . - - To compile this driver as a module, choose M here: the - module will be called istallion. - config A2232 tristate "Commodore A2232 serial support (EXPERIMENTAL)" depends on EXPERIMENTAL && ZORRO && BROKEN diff --git a/drivers/char/Makefile b/drivers/char/Makefile index f5dc7c9bce6b..48bb8acbea49 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -8,15 +8,8 @@ obj-y += misc.o obj-$(CONFIG_MVME147_SCC) += generic_serial.o vme_scc.o obj-$(CONFIG_MVME162_SCC) += generic_serial.o vme_scc.o obj-$(CONFIG_BVME6000_SCC) += generic_serial.o vme_scc.o -obj-$(CONFIG_SERIAL167) += serial167.o -obj-$(CONFIG_STALLION) += stallion.o -obj-$(CONFIG_ISTALLION) += istallion.o -obj-$(CONFIG_DIGIEPCA) += epca.o -obj-$(CONFIG_SPECIALIX) += specialix.o obj-$(CONFIG_A2232) += ser_a2232.o generic_serial.o obj-$(CONFIG_ATARI_DSP56K) += dsp56k.o -obj-$(CONFIG_COMPUTONE) += ip2/ -obj-$(CONFIG_RISCOM8) += riscom8.o obj-$(CONFIG_SX) += sx.o generic_serial.o obj-$(CONFIG_RIO) += rio/ generic_serial.o obj-$(CONFIG_RAW_DRIVER) += raw.o diff --git a/drivers/char/epca.c b/drivers/char/epca.c deleted file mode 100644 index 7ad3638967ae..000000000000 --- a/drivers/char/epca.c +++ /dev/null @@ -1,2784 +0,0 @@ -/* - Copyright (C) 1996 Digi International. - - For technical support please email digiLinux@dgii.com or - call Digi tech support at (612) 912-3456 - - ** This driver is no longer supported by Digi ** - - Much of this design and code came from epca.c which was - copyright (C) 1994, 1995 Troy De Jongh, and subsquently - modified by David Nugent, Christoph Lameter, Mike McLagan. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ -/* See README.epca for change history --DAT*/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "digiPCI.h" - - -#include "digi1.h" -#include "digiFep1.h" -#include "epca.h" -#include "epcaconfig.h" - -#define VERSION "1.3.0.1-LK2.6" - -/* This major needs to be submitted to Linux to join the majors list */ -#define DIGIINFOMAJOR 35 /* For Digi specific ioctl */ - - -#define MAXCARDS 7 -#define epcaassert(x, msg) if (!(x)) epca_error(__LINE__, msg) - -#define PFX "epca: " - -static int nbdevs, num_cards, liloconfig; -static int digi_poller_inhibited = 1 ; - -static int setup_error_code; -static int invalid_lilo_config; - -/* - * The ISA boards do window flipping into the same spaces so its only sane with - * a single lock. It's still pretty efficient. This lock guards the hardware - * and the tty_port lock guards the kernel side stuff like use counts. Take - * this lock inside the port lock if you must take both. - */ -static DEFINE_SPINLOCK(epca_lock); - -/* MAXBOARDS is typically 12, but ISA and EISA cards are restricted - to 7 below. */ -static struct board_info boards[MAXBOARDS]; - -static struct tty_driver *pc_driver; -static struct tty_driver *pc_info; - -/* ------------------ Begin Digi specific structures -------------------- */ - -/* - * digi_channels represents an array of structures that keep track of each - * channel of the Digi product. Information such as transmit and receive - * pointers, termio data, and signal definitions (DTR, CTS, etc ...) are stored - * here. This structure is NOT used to overlay the cards physical channel - * structure. - */ -static struct channel digi_channels[MAX_ALLOC]; - -/* - * card_ptr is an array used to hold the address of the first channel structure - * of each card. This array will hold the addresses of various channels located - * in digi_channels. - */ -static struct channel *card_ptr[MAXCARDS]; - -static struct timer_list epca_timer; - -/* - * Begin generic memory functions. These functions will be alias (point at) - * more specific functions dependent on the board being configured. - */ -static void memwinon(struct board_info *b, unsigned int win); -static void memwinoff(struct board_info *b, unsigned int win); -static void globalwinon(struct channel *ch); -static void rxwinon(struct channel *ch); -static void txwinon(struct channel *ch); -static void memoff(struct channel *ch); -static void assertgwinon(struct channel *ch); -static void assertmemoff(struct channel *ch); - -/* ---- Begin more 'specific' memory functions for cx_like products --- */ - -static void pcxem_memwinon(struct board_info *b, unsigned int win); -static void pcxem_memwinoff(struct board_info *b, unsigned int win); -static void pcxem_globalwinon(struct channel *ch); -static void pcxem_rxwinon(struct channel *ch); -static void pcxem_txwinon(struct channel *ch); -static void pcxem_memoff(struct channel *ch); - -/* ------ Begin more 'specific' memory functions for the pcxe ------- */ - -static void pcxe_memwinon(struct board_info *b, unsigned int win); -static void pcxe_memwinoff(struct board_info *b, unsigned int win); -static void pcxe_globalwinon(struct channel *ch); -static void pcxe_rxwinon(struct channel *ch); -static void pcxe_txwinon(struct channel *ch); -static void pcxe_memoff(struct channel *ch); - -/* ---- Begin more 'specific' memory functions for the pc64xe and pcxi ---- */ -/* Note : pc64xe and pcxi share the same windowing routines */ - -static void pcxi_memwinon(struct board_info *b, unsigned int win); -static void pcxi_memwinoff(struct board_info *b, unsigned int win); -static void pcxi_globalwinon(struct channel *ch); -static void pcxi_rxwinon(struct channel *ch); -static void pcxi_txwinon(struct channel *ch); -static void pcxi_memoff(struct channel *ch); - -/* - Begin 'specific' do nothing memory functions needed for some cards - */ - -static void dummy_memwinon(struct board_info *b, unsigned int win); -static void dummy_memwinoff(struct board_info *b, unsigned int win); -static void dummy_globalwinon(struct channel *ch); -static void dummy_rxwinon(struct channel *ch); -static void dummy_txwinon(struct channel *ch); -static void dummy_memoff(struct channel *ch); -static void dummy_assertgwinon(struct channel *ch); -static void dummy_assertmemoff(struct channel *ch); - -static struct channel *verifyChannel(struct tty_struct *); -static void pc_sched_event(struct channel *, int); -static void epca_error(int, char *); -static void pc_close(struct tty_struct *, struct file *); -static void shutdown(struct channel *, struct tty_struct *tty); -static void pc_hangup(struct tty_struct *); -static int pc_write_room(struct tty_struct *); -static int pc_chars_in_buffer(struct tty_struct *); -static void pc_flush_buffer(struct tty_struct *); -static void pc_flush_chars(struct tty_struct *); -static int pc_open(struct tty_struct *, struct file *); -static void post_fep_init(unsigned int crd); -static void epcapoll(unsigned long); -static void doevent(int); -static void fepcmd(struct channel *, int, int, int, int, int); -static unsigned termios2digi_h(struct channel *ch, unsigned); -static unsigned termios2digi_i(struct channel *ch, unsigned); -static unsigned termios2digi_c(struct channel *ch, unsigned); -static void epcaparam(struct tty_struct *, struct channel *); -static void receive_data(struct channel *, struct tty_struct *tty); -static int pc_ioctl(struct tty_struct *, - unsigned int, unsigned long); -static int info_ioctl(struct tty_struct *, - unsigned int, unsigned long); -static void pc_set_termios(struct tty_struct *, struct ktermios *); -static void do_softint(struct work_struct *work); -static void pc_stop(struct tty_struct *); -static void pc_start(struct tty_struct *); -static void pc_throttle(struct tty_struct *tty); -static void pc_unthrottle(struct tty_struct *tty); -static int pc_send_break(struct tty_struct *tty, int msec); -static void setup_empty_event(struct tty_struct *tty, struct channel *ch); - -static int pc_write(struct tty_struct *, const unsigned char *, int); -static int pc_init(void); -static int init_PCI(void); - -/* - * Table of functions for each board to handle memory. Mantaining parallelism - * is a *very* good idea here. The idea is for the runtime code to blindly call - * these functions, not knowing/caring about the underlying hardware. This - * stuff should contain no conditionals; if more functionality is needed a - * different entry should be established. These calls are the interface calls - * and are the only functions that should be accessed. Anyone caught making - * direct calls deserves what they get. - */ -static void memwinon(struct board_info *b, unsigned int win) -{ - b->memwinon(b, win); -} - -static void memwinoff(struct board_info *b, unsigned int win) -{ - b->memwinoff(b, win); -} - -static void globalwinon(struct channel *ch) -{ - ch->board->globalwinon(ch); -} - -static void rxwinon(struct channel *ch) -{ - ch->board->rxwinon(ch); -} - -static void txwinon(struct channel *ch) -{ - ch->board->txwinon(ch); -} - -static void memoff(struct channel *ch) -{ - ch->board->memoff(ch); -} -static void assertgwinon(struct channel *ch) -{ - ch->board->assertgwinon(ch); -} - -static void assertmemoff(struct channel *ch) -{ - ch->board->assertmemoff(ch); -} - -/* PCXEM windowing is the same as that used in the PCXR and CX series cards. */ -static void pcxem_memwinon(struct board_info *b, unsigned int win) -{ - outb_p(FEPWIN | win, b->port + 1); -} - -static void pcxem_memwinoff(struct board_info *b, unsigned int win) -{ - outb_p(0, b->port + 1); -} - -static void pcxem_globalwinon(struct channel *ch) -{ - outb_p(FEPWIN, (int)ch->board->port + 1); -} - -static void pcxem_rxwinon(struct channel *ch) -{ - outb_p(ch->rxwin, (int)ch->board->port + 1); -} - -static void pcxem_txwinon(struct channel *ch) -{ - outb_p(ch->txwin, (int)ch->board->port + 1); -} - -static void pcxem_memoff(struct channel *ch) -{ - outb_p(0, (int)ch->board->port + 1); -} - -/* ----------------- Begin pcxe memory window stuff ------------------ */ -static void pcxe_memwinon(struct board_info *b, unsigned int win) -{ - outb_p(FEPWIN | win, b->port + 1); -} - -static void pcxe_memwinoff(struct board_info *b, unsigned int win) -{ - outb_p(inb(b->port) & ~FEPMEM, b->port + 1); - outb_p(0, b->port + 1); -} - -static void pcxe_globalwinon(struct channel *ch) -{ - outb_p(FEPWIN, (int)ch->board->port + 1); -} - -static void pcxe_rxwinon(struct channel *ch) -{ - outb_p(ch->rxwin, (int)ch->board->port + 1); -} - -static void pcxe_txwinon(struct channel *ch) -{ - outb_p(ch->txwin, (int)ch->board->port + 1); -} - -static void pcxe_memoff(struct channel *ch) -{ - outb_p(0, (int)ch->board->port); - outb_p(0, (int)ch->board->port + 1); -} - -/* ------------- Begin pc64xe and pcxi memory window stuff -------------- */ -static void pcxi_memwinon(struct board_info *b, unsigned int win) -{ - outb_p(inb(b->port) | FEPMEM, b->port); -} - -static void pcxi_memwinoff(struct board_info *b, unsigned int win) -{ - outb_p(inb(b->port) & ~FEPMEM, b->port); -} - -static void pcxi_globalwinon(struct channel *ch) -{ - outb_p(FEPMEM, ch->board->port); -} - -static void pcxi_rxwinon(struct channel *ch) -{ - outb_p(FEPMEM, ch->board->port); -} - -static void pcxi_txwinon(struct channel *ch) -{ - outb_p(FEPMEM, ch->board->port); -} - -static void pcxi_memoff(struct channel *ch) -{ - outb_p(0, ch->board->port); -} - -static void pcxi_assertgwinon(struct channel *ch) -{ - epcaassert(inb(ch->board->port) & FEPMEM, "Global memory off"); -} - -static void pcxi_assertmemoff(struct channel *ch) -{ - epcaassert(!(inb(ch->board->port) & FEPMEM), "Memory on"); -} - -/* - * Not all of the cards need specific memory windowing routines. Some cards - * (Such as PCI) needs no windowing routines at all. We provide these do - * nothing routines so that the same code base can be used. The driver will - * ALWAYS call a windowing routine if it thinks it needs to; regardless of the - * card. However, dependent on the card the routine may or may not do anything. - */ -static void dummy_memwinon(struct board_info *b, unsigned int win) -{ -} - -static void dummy_memwinoff(struct board_info *b, unsigned int win) -{ -} - -static void dummy_globalwinon(struct channel *ch) -{ -} - -static void dummy_rxwinon(struct channel *ch) -{ -} - -static void dummy_txwinon(struct channel *ch) -{ -} - -static void dummy_memoff(struct channel *ch) -{ -} - -static void dummy_assertgwinon(struct channel *ch) -{ -} - -static void dummy_assertmemoff(struct channel *ch) -{ -} - -static struct channel *verifyChannel(struct tty_struct *tty) -{ - /* - * This routine basically provides a sanity check. It insures that the - * channel returned is within the proper range of addresses as well as - * properly initialized. If some bogus info gets passed in - * through tty->driver_data this should catch it. - */ - if (tty) { - struct channel *ch = tty->driver_data; - if (ch >= &digi_channels[0] && ch < &digi_channels[nbdevs]) { - if (ch->magic == EPCA_MAGIC) - return ch; - } - } - return NULL; -} - -static void pc_sched_event(struct channel *ch, int event) -{ - /* - * We call this to schedule interrupt processing on some event. The - * kernel sees our request and calls the related routine in OUR driver. - */ - ch->event |= 1 << event; - schedule_work(&ch->tqueue); -} - -static void epca_error(int line, char *msg) -{ - printk(KERN_ERR "epca_error (Digi): line = %d %s\n", line, msg); -} - -static void pc_close(struct tty_struct *tty, struct file *filp) -{ - struct channel *ch; - struct tty_port *port; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch == NULL) - return; - port = &ch->port; - - if (tty_port_close_start(port, tty, filp) == 0) - return; - - pc_flush_buffer(tty); - shutdown(ch, tty); - - tty_port_close_end(port, tty); - ch->event = 0; /* FIXME: review ch->event locking */ - tty_port_tty_set(port, NULL); -} - -static void shutdown(struct channel *ch, struct tty_struct *tty) -{ - unsigned long flags; - struct board_chan __iomem *bc; - struct tty_port *port = &ch->port; - - if (!(port->flags & ASYNC_INITIALIZED)) - return; - - spin_lock_irqsave(&epca_lock, flags); - - globalwinon(ch); - bc = ch->brdchan; - - /* - * In order for an event to be generated on the receipt of data the - * idata flag must be set. Since we are shutting down, this is not - * necessary clear this flag. - */ - if (bc) - writeb(0, &bc->idata); - - /* If we're a modem control device and HUPCL is on, drop RTS & DTR. */ - if (tty->termios->c_cflag & HUPCL) { - ch->omodem &= ~(ch->m_rts | ch->m_dtr); - fepcmd(ch, SETMODEM, 0, ch->m_dtr | ch->m_rts, 10, 1); - } - memoff(ch); - - /* - * The channel has officialy been closed. The next time it is opened it - * will have to reinitialized. Set a flag to indicate this. - */ - /* Prevent future Digi programmed interrupts from coming active */ - port->flags &= ~ASYNC_INITIALIZED; - spin_unlock_irqrestore(&epca_lock, flags); -} - -static void pc_hangup(struct tty_struct *tty) -{ - struct channel *ch; - - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch != NULL) { - pc_flush_buffer(tty); - tty_ldisc_flush(tty); - shutdown(ch, tty); - - ch->event = 0; /* FIXME: review locking of ch->event */ - tty_port_hangup(&ch->port); - } -} - -static int pc_write(struct tty_struct *tty, - const unsigned char *buf, int bytesAvailable) -{ - unsigned int head, tail; - int dataLen; - int size; - int amountCopied; - struct channel *ch; - unsigned long flags; - int remain; - struct board_chan __iomem *bc; - - /* - * pc_write is primarily called directly by the kernel routine - * tty_write (Though it can also be called by put_char) found in - * tty_io.c. pc_write is passed a line discipline buffer where the data - * to be written out is stored. The line discipline implementation - * itself is done at the kernel level and is not brought into the - * driver. - */ - - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch == NULL) - return 0; - - /* Make a pointer to the channel data structure found on the board. */ - bc = ch->brdchan; - size = ch->txbufsize; - amountCopied = 0; - - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - - head = readw(&bc->tin) & (size - 1); - tail = readw(&bc->tout); - - if (tail != readw(&bc->tout)) - tail = readw(&bc->tout); - tail &= (size - 1); - - if (head >= tail) { - /* head has not wrapped */ - /* - * remain (much like dataLen above) represents the total amount - * of space available on the card for data. Here dataLen - * represents the space existing between the head pointer and - * the end of buffer. This is important because a memcpy cannot - * be told to automatically wrap around when it hits the buffer - * end. - */ - dataLen = size - head; - remain = size - (head - tail) - 1; - } else { - /* head has wrapped around */ - remain = tail - head - 1; - dataLen = remain; - } - /* - * Check the space on the card. If we have more data than space; reduce - * the amount of data to fit the space. - */ - bytesAvailable = min(remain, bytesAvailable); - txwinon(ch); - while (bytesAvailable > 0) { - /* there is data to copy onto card */ - - /* - * If head is not wrapped, the below will make sure the first - * data copy fills to the end of card buffer. - */ - dataLen = min(bytesAvailable, dataLen); - memcpy_toio(ch->txptr + head, buf, dataLen); - buf += dataLen; - head += dataLen; - amountCopied += dataLen; - bytesAvailable -= dataLen; - - if (head >= size) { - head = 0; - dataLen = tail; - } - } - ch->statusflags |= TXBUSY; - globalwinon(ch); - writew(head, &bc->tin); - - if ((ch->statusflags & LOWWAIT) == 0) { - ch->statusflags |= LOWWAIT; - writeb(1, &bc->ilow); - } - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - return amountCopied; -} - -static int pc_write_room(struct tty_struct *tty) -{ - int remain = 0; - struct channel *ch; - unsigned long flags; - unsigned int head, tail; - struct board_chan __iomem *bc; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch != NULL) { - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - - bc = ch->brdchan; - head = readw(&bc->tin) & (ch->txbufsize - 1); - tail = readw(&bc->tout); - - if (tail != readw(&bc->tout)) - tail = readw(&bc->tout); - /* Wrap tail if necessary */ - tail &= (ch->txbufsize - 1); - remain = tail - head - 1; - if (remain < 0) - remain += ch->txbufsize; - - if (remain && (ch->statusflags & LOWWAIT) == 0) { - ch->statusflags |= LOWWAIT; - writeb(1, &bc->ilow); - } - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - } - /* Return how much room is left on card */ - return remain; -} - -static int pc_chars_in_buffer(struct tty_struct *tty) -{ - int chars; - unsigned int ctail, head, tail; - int remain; - unsigned long flags; - struct channel *ch; - struct board_chan __iomem *bc; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch == NULL) - return 0; - - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - - bc = ch->brdchan; - tail = readw(&bc->tout); - head = readw(&bc->tin); - ctail = readw(&ch->mailbox->cout); - - if (tail == head && readw(&ch->mailbox->cin) == ctail && - readb(&bc->tbusy) == 0) - chars = 0; - else { /* Begin if some space on the card has been used */ - head = readw(&bc->tin) & (ch->txbufsize - 1); - tail &= (ch->txbufsize - 1); - /* - * The logic here is basically opposite of the above - * pc_write_room here we are finding the amount of bytes in the - * buffer filled. Not the amount of bytes empty. - */ - remain = tail - head - 1; - if (remain < 0) - remain += ch->txbufsize; - chars = (int)(ch->txbufsize - remain); - /* - * Make it possible to wakeup anything waiting for output in - * tty_ioctl.c, etc. - * - * If not already set. Setup an event to indicate when the - * transmit buffer empties. - */ - if (!(ch->statusflags & EMPTYWAIT)) - setup_empty_event(tty, ch); - } /* End if some space on the card has been used */ - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - /* Return number of characters residing on card. */ - return chars; -} - -static void pc_flush_buffer(struct tty_struct *tty) -{ - unsigned int tail; - unsigned long flags; - struct channel *ch; - struct board_chan __iomem *bc; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch == NULL) - return; - - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - bc = ch->brdchan; - tail = readw(&bc->tout); - /* Have FEP move tout pointer; effectively flushing transmit buffer */ - fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - tty_wakeup(tty); -} - -static void pc_flush_chars(struct tty_struct *tty) -{ - struct channel *ch; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch != NULL) { - unsigned long flags; - spin_lock_irqsave(&epca_lock, flags); - /* - * If not already set and the transmitter is busy setup an - * event to indicate when the transmit empties. - */ - if ((ch->statusflags & TXBUSY) && - !(ch->statusflags & EMPTYWAIT)) - setup_empty_event(tty, ch); - spin_unlock_irqrestore(&epca_lock, flags); - } -} - -static int epca_carrier_raised(struct tty_port *port) -{ - struct channel *ch = container_of(port, struct channel, port); - if (ch->imodem & ch->dcd) - return 1; - return 0; -} - -static void epca_dtr_rts(struct tty_port *port, int onoff) -{ -} - -static int pc_open(struct tty_struct *tty, struct file *filp) -{ - struct channel *ch; - struct tty_port *port; - unsigned long flags; - int line, retval, boardnum; - struct board_chan __iomem *bc; - unsigned int head; - - line = tty->index; - if (line < 0 || line >= nbdevs) - return -ENODEV; - - ch = &digi_channels[line]; - port = &ch->port; - boardnum = ch->boardnum; - - /* Check status of board configured in system. */ - - /* - * I check to see if the epca_setup routine detected a user error. It - * might be better to put this in pc_init, but for the moment it goes - * here. - */ - if (invalid_lilo_config) { - if (setup_error_code & INVALID_BOARD_TYPE) - printk(KERN_ERR "epca: pc_open: Invalid board type specified in kernel options.\n"); - if (setup_error_code & INVALID_NUM_PORTS) - printk(KERN_ERR "epca: pc_open: Invalid number of ports specified in kernel options.\n"); - if (setup_error_code & INVALID_MEM_BASE) - printk(KERN_ERR "epca: pc_open: Invalid board memory address specified in kernel options.\n"); - if (setup_error_code & INVALID_PORT_BASE) - printk(KERN_ERR "epca; pc_open: Invalid board port address specified in kernel options.\n"); - if (setup_error_code & INVALID_BOARD_STATUS) - printk(KERN_ERR "epca: pc_open: Invalid board status specified in kernel options.\n"); - if (setup_error_code & INVALID_ALTPIN) - printk(KERN_ERR "epca: pc_open: Invalid board altpin specified in kernel options;\n"); - tty->driver_data = NULL; /* Mark this device as 'down' */ - return -ENODEV; - } - if (boardnum >= num_cards || boards[boardnum].status == DISABLED) { - tty->driver_data = NULL; /* Mark this device as 'down' */ - return(-ENODEV); - } - - bc = ch->brdchan; - if (bc == NULL) { - tty->driver_data = NULL; - return -ENODEV; - } - - spin_lock_irqsave(&port->lock, flags); - /* - * Every time a channel is opened, increment a counter. This is - * necessary because we do not wish to flush and shutdown the channel - * until the last app holding the channel open, closes it. - */ - port->count++; - /* - * Set a kernel structures pointer to our local channel structure. This - * way we can get to it when passed only a tty struct. - */ - tty->driver_data = ch; - port->tty = tty; - /* - * If this is the first time the channel has been opened, initialize - * the tty->termios struct otherwise let pc_close handle it. - */ - spin_lock(&epca_lock); - globalwinon(ch); - ch->statusflags = 0; - - /* Save boards current modem status */ - ch->imodem = readb(&bc->mstat); - - /* - * Set receive head and tail ptrs to each other. This indicates no data - * available to read. - */ - head = readw(&bc->rin); - writew(head, &bc->rout); - - /* Set the channels associated tty structure */ - - /* - * The below routine generally sets up parity, baud, flow control - * issues, etc.... It effect both control flags and input flags. - */ - epcaparam(tty, ch); - memoff(ch); - spin_unlock(&epca_lock); - port->flags |= ASYNC_INITIALIZED; - spin_unlock_irqrestore(&port->lock, flags); - - retval = tty_port_block_til_ready(port, tty, filp); - if (retval) - return retval; - /* - * Set this again in case a hangup set it to zero while this open() was - * waiting for the line... - */ - spin_lock_irqsave(&port->lock, flags); - port->tty = tty; - spin_lock(&epca_lock); - globalwinon(ch); - /* Enable Digi Data events */ - writeb(1, &bc->idata); - memoff(ch); - spin_unlock(&epca_lock); - spin_unlock_irqrestore(&port->lock, flags); - return 0; -} - -static int __init epca_module_init(void) -{ - return pc_init(); -} -module_init(epca_module_init); - -static struct pci_driver epca_driver; - -static void __exit epca_module_exit(void) -{ - int count, crd; - struct board_info *bd; - struct channel *ch; - - del_timer_sync(&epca_timer); - - if (tty_unregister_driver(pc_driver) || - tty_unregister_driver(pc_info)) { - printk(KERN_WARNING "epca: cleanup_module failed to un-register tty driver\n"); - return; - } - put_tty_driver(pc_driver); - put_tty_driver(pc_info); - - for (crd = 0; crd < num_cards; crd++) { - bd = &boards[crd]; - if (!bd) { /* sanity check */ - printk(KERN_ERR " - Digi : cleanup_module failed\n"); - return; - } - ch = card_ptr[crd]; - for (count = 0; count < bd->numports; count++, ch++) { - struct tty_struct *tty = tty_port_tty_get(&ch->port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } - } - } - pci_unregister_driver(&epca_driver); -} -module_exit(epca_module_exit); - -static const struct tty_operations pc_ops = { - .open = pc_open, - .close = pc_close, - .write = pc_write, - .write_room = pc_write_room, - .flush_buffer = pc_flush_buffer, - .chars_in_buffer = pc_chars_in_buffer, - .flush_chars = pc_flush_chars, - .ioctl = pc_ioctl, - .set_termios = pc_set_termios, - .stop = pc_stop, - .start = pc_start, - .throttle = pc_throttle, - .unthrottle = pc_unthrottle, - .hangup = pc_hangup, - .break_ctl = pc_send_break -}; - -static const struct tty_port_operations epca_port_ops = { - .carrier_raised = epca_carrier_raised, - .dtr_rts = epca_dtr_rts, -}; - -static int info_open(struct tty_struct *tty, struct file *filp) -{ - return 0; -} - -static const struct tty_operations info_ops = { - .open = info_open, - .ioctl = info_ioctl, -}; - -static int __init pc_init(void) -{ - int crd; - struct board_info *bd; - unsigned char board_id = 0; - int err = -ENOMEM; - - int pci_boards_found, pci_count; - - pci_count = 0; - - pc_driver = alloc_tty_driver(MAX_ALLOC); - if (!pc_driver) - goto out1; - - pc_info = alloc_tty_driver(MAX_ALLOC); - if (!pc_info) - goto out2; - - /* - * If epca_setup has not been ran by LILO set num_cards to defaults; - * copy board structure defined by digiConfig into drivers board - * structure. Note : If LILO has ran epca_setup then epca_setup will - * handle defining num_cards as well as copying the data into the board - * structure. - */ - if (!liloconfig) { - /* driver has been configured via. epcaconfig */ - nbdevs = NBDEVS; - num_cards = NUMCARDS; - memcpy(&boards, &static_boards, - sizeof(struct board_info) * NUMCARDS); - } - - /* - * Note : If lilo was used to configure the driver and the ignore - * epcaconfig option was choosen (digiepca=2) then nbdevs and num_cards - * will equal 0 at this point. This is okay; PCI cards will still be - * picked up if detected. - */ - - /* - * Set up interrupt, we will worry about memory allocation in - * post_fep_init. - */ - printk(KERN_INFO "DIGI epca driver version %s loaded.\n", VERSION); - - /* - * NOTE : This code assumes that the number of ports found in the - * boards array is correct. This could be wrong if the card in question - * is PCI (And therefore has no ports entry in the boards structure.) - * The rest of the information will be valid for PCI because the - * beginning of pc_init scans for PCI and determines i/o and base - * memory addresses. I am not sure if it is possible to read the number - * of ports supported by the card prior to it being booted (Since that - * is the state it is in when pc_init is run). Because it is not - * possible to query the number of supported ports until after the card - * has booted; we are required to calculate the card_ptrs as the card - * is initialized (Inside post_fep_init). The negative thing about this - * approach is that digiDload's call to GET_INFO will have a bad port - * value. (Since this is called prior to post_fep_init.) - */ - pci_boards_found = 0; - if (num_cards < MAXBOARDS) - pci_boards_found += init_PCI(); - num_cards += pci_boards_found; - - pc_driver->owner = THIS_MODULE; - pc_driver->name = "ttyD"; - pc_driver->major = DIGI_MAJOR; - pc_driver->minor_start = 0; - pc_driver->type = TTY_DRIVER_TYPE_SERIAL; - pc_driver->subtype = SERIAL_TYPE_NORMAL; - pc_driver->init_termios = tty_std_termios; - pc_driver->init_termios.c_iflag = 0; - pc_driver->init_termios.c_oflag = 0; - pc_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; - pc_driver->init_termios.c_lflag = 0; - pc_driver->init_termios.c_ispeed = 9600; - pc_driver->init_termios.c_ospeed = 9600; - pc_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; - tty_set_operations(pc_driver, &pc_ops); - - pc_info->owner = THIS_MODULE; - pc_info->name = "digi_ctl"; - pc_info->major = DIGIINFOMAJOR; - pc_info->minor_start = 0; - pc_info->type = TTY_DRIVER_TYPE_SERIAL; - pc_info->subtype = SERIAL_TYPE_INFO; - pc_info->init_termios = tty_std_termios; - pc_info->init_termios.c_iflag = 0; - pc_info->init_termios.c_oflag = 0; - pc_info->init_termios.c_lflag = 0; - pc_info->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; - pc_info->init_termios.c_ispeed = 9600; - pc_info->init_termios.c_ospeed = 9600; - pc_info->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(pc_info, &info_ops); - - - for (crd = 0; crd < num_cards; crd++) { - /* - * This is where the appropriate memory handlers for the - * hardware is set. Everything at runtime blindly jumps through - * these vectors. - */ - - /* defined in epcaconfig.h */ - bd = &boards[crd]; - - switch (bd->type) { - case PCXEM: - case EISAXEM: - bd->memwinon = pcxem_memwinon; - bd->memwinoff = pcxem_memwinoff; - bd->globalwinon = pcxem_globalwinon; - bd->txwinon = pcxem_txwinon; - bd->rxwinon = pcxem_rxwinon; - bd->memoff = pcxem_memoff; - bd->assertgwinon = dummy_assertgwinon; - bd->assertmemoff = dummy_assertmemoff; - break; - - case PCIXEM: - case PCIXRJ: - case PCIXR: - bd->memwinon = dummy_memwinon; - bd->memwinoff = dummy_memwinoff; - bd->globalwinon = dummy_globalwinon; - bd->txwinon = dummy_txwinon; - bd->rxwinon = dummy_rxwinon; - bd->memoff = dummy_memoff; - bd->assertgwinon = dummy_assertgwinon; - bd->assertmemoff = dummy_assertmemoff; - break; - - case PCXE: - case PCXEVE: - bd->memwinon = pcxe_memwinon; - bd->memwinoff = pcxe_memwinoff; - bd->globalwinon = pcxe_globalwinon; - bd->txwinon = pcxe_txwinon; - bd->rxwinon = pcxe_rxwinon; - bd->memoff = pcxe_memoff; - bd->assertgwinon = dummy_assertgwinon; - bd->assertmemoff = dummy_assertmemoff; - break; - - case PCXI: - case PC64XE: - bd->memwinon = pcxi_memwinon; - bd->memwinoff = pcxi_memwinoff; - bd->globalwinon = pcxi_globalwinon; - bd->txwinon = pcxi_txwinon; - bd->rxwinon = pcxi_rxwinon; - bd->memoff = pcxi_memoff; - bd->assertgwinon = pcxi_assertgwinon; - bd->assertmemoff = pcxi_assertmemoff; - break; - - default: - break; - } - - /* - * Some cards need a memory segment to be defined for use in - * transmit and receive windowing operations. These boards are - * listed in the below switch. In the case of the XI the amount - * of memory on the board is variable so the memory_seg is also - * variable. This code determines what they segment should be. - */ - switch (bd->type) { - case PCXE: - case PCXEVE: - case PC64XE: - bd->memory_seg = 0xf000; - break; - - case PCXI: - board_id = inb((int)bd->port); - if ((board_id & 0x1) == 0x1) { - /* it's an XI card */ - /* Is it a 64K board */ - if ((board_id & 0x30) == 0) - bd->memory_seg = 0xf000; - - /* Is it a 128K board */ - if ((board_id & 0x30) == 0x10) - bd->memory_seg = 0xe000; - - /* Is is a 256K board */ - if ((board_id & 0x30) == 0x20) - bd->memory_seg = 0xc000; - - /* Is it a 512K board */ - if ((board_id & 0x30) == 0x30) - bd->memory_seg = 0x8000; - } else - printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n", (int)bd->port); - break; - } - } - - err = tty_register_driver(pc_driver); - if (err) { - printk(KERN_ERR "Couldn't register Digi PC/ driver"); - goto out3; - } - - err = tty_register_driver(pc_info); - if (err) { - printk(KERN_ERR "Couldn't register Digi PC/ info "); - goto out4; - } - - /* Start up the poller to check for events on all enabled boards */ - init_timer(&epca_timer); - epca_timer.function = epcapoll; - mod_timer(&epca_timer, jiffies + HZ/25); - return 0; - -out4: - tty_unregister_driver(pc_driver); -out3: - put_tty_driver(pc_info); -out2: - put_tty_driver(pc_driver); -out1: - return err; -} - -static void post_fep_init(unsigned int crd) -{ - int i; - void __iomem *memaddr; - struct global_data __iomem *gd; - struct board_info *bd; - struct board_chan __iomem *bc; - struct channel *ch; - int shrinkmem = 0, lowwater; - - /* - * This call is made by the user via. the ioctl call DIGI_INIT. It is - * responsible for setting up all the card specific stuff. - */ - bd = &boards[crd]; - - /* - * If this is a PCI board, get the port info. Remember PCI cards do not - * have entries into the epcaconfig.h file, so we can't get the number - * of ports from it. Unfortunetly, this means that anyone doing a - * DIGI_GETINFO before the board has booted will get an invalid number - * of ports returned (It should return 0). Calls to DIGI_GETINFO after - * DIGI_INIT has been called will return the proper values. - */ - if (bd->type >= PCIXEM) { /* Begin get PCI number of ports */ - /* - * Below we use XEMPORTS as a memory offset regardless of which - * PCI card it is. This is because all of the supported PCI - * cards have the same memory offset for the channel data. This - * will have to be changed if we ever develop a PCI/XE card. - * NOTE : The FEP manual states that the port offset is 0xC22 - * as opposed to 0xC02. This is only true for PC/XE, and PC/XI - * cards; not for the XEM, or CX series. On the PCI cards the - * number of ports is determined by reading a ID PROM located - * in the box attached to the card. The card can then determine - * the index the id to determine the number of ports available. - * (FYI - The id should be located at 0x1ac (And may use up to - * 4 bytes if the box in question is a XEM or CX)). - */ - /* PCI cards are already remapped at this point ISA are not */ - bd->numports = readw(bd->re_map_membase + XEMPORTS); - epcaassert(bd->numports <= 64, "PCI returned a invalid number of ports"); - nbdevs += (bd->numports); - } else { - /* Fix up the mappings for ISA/EISA etc */ - /* FIXME: 64K - can we be smarter ? */ - bd->re_map_membase = ioremap_nocache(bd->membase, 0x10000); - } - - if (crd != 0) - card_ptr[crd] = card_ptr[crd-1] + boards[crd-1].numports; - else - card_ptr[crd] = &digi_channels[crd]; /* <- For card 0 only */ - - ch = card_ptr[crd]; - epcaassert(ch <= &digi_channels[nbdevs - 1], "ch out of range"); - - memaddr = bd->re_map_membase; - - /* - * The below assignment will set bc to point at the BEGINING of the - * cards channel structures. For 1 card there will be between 8 and 64 - * of these structures. - */ - bc = memaddr + CHANSTRUCT; - - /* - * The below assignment will set gd to point at the BEGINING of global - * memory address 0xc00. The first data in that global memory actually - * starts at address 0xc1a. The command in pointer begins at 0xd10. - */ - gd = memaddr + GLOBAL; - - /* - * XEPORTS (address 0xc22) points at the number of channels the card - * supports. (For 64XE, XI, XEM, and XR use 0xc02) - */ - if ((bd->type == PCXEVE || bd->type == PCXE) && - (readw(memaddr + XEPORTS) < 3)) - shrinkmem = 1; - if (bd->type < PCIXEM) - if (!request_region((int)bd->port, 4, board_desc[bd->type])) - return; - memwinon(bd, 0); - - /* - * Remember ch is the main drivers channels structure, while bc is the - * cards channel structure. - */ - for (i = 0; i < bd->numports; i++, ch++, bc++) { - unsigned long flags; - u16 tseg, rseg; - - tty_port_init(&ch->port); - ch->port.ops = &epca_port_ops; - ch->brdchan = bc; - ch->mailbox = gd; - INIT_WORK(&ch->tqueue, do_softint); - ch->board = &boards[crd]; - - spin_lock_irqsave(&epca_lock, flags); - switch (bd->type) { - /* - * Since some of the boards use different bitmaps for - * their control signals we cannot hard code these - * values and retain portability. We virtualize this - * data here. - */ - case EISAXEM: - case PCXEM: - case PCIXEM: - case PCIXRJ: - case PCIXR: - ch->m_rts = 0x02; - ch->m_dcd = 0x80; - ch->m_dsr = 0x20; - ch->m_cts = 0x10; - ch->m_ri = 0x40; - ch->m_dtr = 0x01; - break; - - case PCXE: - case PCXEVE: - case PCXI: - case PC64XE: - ch->m_rts = 0x02; - ch->m_dcd = 0x08; - ch->m_dsr = 0x10; - ch->m_cts = 0x20; - ch->m_ri = 0x40; - ch->m_dtr = 0x80; - break; - } - - if (boards[crd].altpin) { - ch->dsr = ch->m_dcd; - ch->dcd = ch->m_dsr; - ch->digiext.digi_flags |= DIGI_ALTPIN; - } else { - ch->dcd = ch->m_dcd; - ch->dsr = ch->m_dsr; - } - - ch->boardnum = crd; - ch->channelnum = i; - ch->magic = EPCA_MAGIC; - tty_port_tty_set(&ch->port, NULL); - - if (shrinkmem) { - fepcmd(ch, SETBUFFER, 32, 0, 0, 0); - shrinkmem = 0; - } - - tseg = readw(&bc->tseg); - rseg = readw(&bc->rseg); - - switch (bd->type) { - case PCIXEM: - case PCIXRJ: - case PCIXR: - /* Cover all the 2MEG cards */ - ch->txptr = memaddr + ((tseg << 4) & 0x1fffff); - ch->rxptr = memaddr + ((rseg << 4) & 0x1fffff); - ch->txwin = FEPWIN | (tseg >> 11); - ch->rxwin = FEPWIN | (rseg >> 11); - break; - - case PCXEM: - case EISAXEM: - /* Cover all the 32K windowed cards */ - /* Mask equal to window size - 1 */ - ch->txptr = memaddr + ((tseg << 4) & 0x7fff); - ch->rxptr = memaddr + ((rseg << 4) & 0x7fff); - ch->txwin = FEPWIN | (tseg >> 11); - ch->rxwin = FEPWIN | (rseg >> 11); - break; - - case PCXEVE: - case PCXE: - ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) - & 0x1fff); - ch->txwin = FEPWIN | ((tseg - bd->memory_seg) >> 9); - ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) - & 0x1fff); - ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >> 9); - break; - - case PCXI: - case PC64XE: - ch->txptr = memaddr + ((tseg - bd->memory_seg) << 4); - ch->rxptr = memaddr + ((rseg - bd->memory_seg) << 4); - ch->txwin = ch->rxwin = 0; - break; - } - - ch->txbufhead = 0; - ch->txbufsize = readw(&bc->tmax) + 1; - - ch->rxbufhead = 0; - ch->rxbufsize = readw(&bc->rmax) + 1; - - lowwater = ch->txbufsize >= 2000 ? 1024 : (ch->txbufsize / 2); - - /* Set transmitter low water mark */ - fepcmd(ch, STXLWATER, lowwater, 0, 10, 0); - - /* Set receiver low water mark */ - fepcmd(ch, SRXLWATER, (ch->rxbufsize / 4), 0, 10, 0); - - /* Set receiver high water mark */ - fepcmd(ch, SRXHWATER, (3 * ch->rxbufsize / 4), 0, 10, 0); - - writew(100, &bc->edelay); - writeb(1, &bc->idata); - - ch->startc = readb(&bc->startc); - ch->stopc = readb(&bc->stopc); - ch->startca = readb(&bc->startca); - ch->stopca = readb(&bc->stopca); - - ch->fepcflag = 0; - ch->fepiflag = 0; - ch->fepoflag = 0; - ch->fepstartc = 0; - ch->fepstopc = 0; - ch->fepstartca = 0; - ch->fepstopca = 0; - - ch->port.close_delay = 50; - - spin_unlock_irqrestore(&epca_lock, flags); - } - - printk(KERN_INFO - "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", - VERSION, board_desc[bd->type], (long)bd->port, - (long)bd->membase, bd->numports); - memwinoff(bd, 0); -} - -static void epcapoll(unsigned long ignored) -{ - unsigned long flags; - int crd; - unsigned int head, tail; - struct channel *ch; - struct board_info *bd; - - /* - * This routine is called upon every timer interrupt. Even though the - * Digi series cards are capable of generating interrupts this method - * of non-looping polling is more efficient. This routine checks for - * card generated events (Such as receive data, are transmit buffer - * empty) and acts on those events. - */ - for (crd = 0; crd < num_cards; crd++) { - bd = &boards[crd]; - ch = card_ptr[crd]; - - if ((bd->status == DISABLED) || digi_poller_inhibited) - continue; - - /* - * assertmemoff is not needed here; indeed it is an empty - * subroutine. It is being kept because future boards may need - * this as well as some legacy boards. - */ - spin_lock_irqsave(&epca_lock, flags); - - assertmemoff(ch); - - globalwinon(ch); - - /* - * In this case head and tail actually refer to the event queue - * not the transmit or receive queue. - */ - head = readw(&ch->mailbox->ein); - tail = readw(&ch->mailbox->eout); - - /* If head isn't equal to tail we have an event */ - if (head != tail) - doevent(crd); - memoff(ch); - - spin_unlock_irqrestore(&epca_lock, flags); - } /* End for each card */ - mod_timer(&epca_timer, jiffies + (HZ / 25)); -} - -static void doevent(int crd) -{ - void __iomem *eventbuf; - struct channel *ch, *chan0; - static struct tty_struct *tty; - struct board_info *bd; - struct board_chan __iomem *bc; - unsigned int tail, head; - int event, channel; - int mstat, lstat; - - /* - * This subroutine is called by epcapoll when an event is detected - * in the event queue. This routine responds to those events. - */ - bd = &boards[crd]; - - chan0 = card_ptr[crd]; - epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range"); - assertgwinon(chan0); - while ((tail = readw(&chan0->mailbox->eout)) != - (head = readw(&chan0->mailbox->ein))) { - /* Begin while something in event queue */ - assertgwinon(chan0); - eventbuf = bd->re_map_membase + tail + ISTART; - /* Get the channel the event occurred on */ - channel = readb(eventbuf); - /* Get the actual event code that occurred */ - event = readb(eventbuf + 1); - /* - * The two assignments below get the current modem status - * (mstat) and the previous modem status (lstat). These are - * useful becuase an event could signal a change in modem - * signals itself. - */ - mstat = readb(eventbuf + 2); - lstat = readb(eventbuf + 3); - - ch = chan0 + channel; - if ((unsigned)channel >= bd->numports || !ch) { - if (channel >= bd->numports) - ch = chan0; - bc = ch->brdchan; - goto next; - } - - bc = ch->brdchan; - if (bc == NULL) - goto next; - - tty = tty_port_tty_get(&ch->port); - if (event & DATA_IND) { /* Begin DATA_IND */ - receive_data(ch, tty); - assertgwinon(ch); - } /* End DATA_IND */ - /* else *//* Fix for DCD transition missed bug */ - if (event & MODEMCHG_IND) { - /* A modem signal change has been indicated */ - ch->imodem = mstat; - if (test_bit(ASYNCB_CHECK_CD, &ch->port.flags)) { - /* We are now receiving dcd */ - if (mstat & ch->dcd) - wake_up_interruptible(&ch->port.open_wait); - else /* No dcd; hangup */ - pc_sched_event(ch, EPCA_EVENT_HANGUP); - } - } - if (tty) { - if (event & BREAK_IND) { - /* A break has been indicated */ - tty_insert_flip_char(tty, 0, TTY_BREAK); - tty_schedule_flip(tty); - } else if (event & LOWTX_IND) { - if (ch->statusflags & LOWWAIT) { - ch->statusflags &= ~LOWWAIT; - tty_wakeup(tty); - } - } else if (event & EMPTYTX_IND) { - /* This event is generated by - setup_empty_event */ - ch->statusflags &= ~TXBUSY; - if (ch->statusflags & EMPTYWAIT) { - ch->statusflags &= ~EMPTYWAIT; - tty_wakeup(tty); - } - } - tty_kref_put(tty); - } -next: - globalwinon(ch); - BUG_ON(!bc); - writew(1, &bc->idata); - writew((tail + 4) & (IMAX - ISTART - 4), &chan0->mailbox->eout); - globalwinon(chan0); - } /* End while something in event queue */ -} - -static void fepcmd(struct channel *ch, int cmd, int word_or_byte, - int byte2, int ncmds, int bytecmd) -{ - unchar __iomem *memaddr; - unsigned int head, cmdTail, cmdStart, cmdMax; - long count; - int n; - - /* This is the routine in which commands may be passed to the card. */ - - if (ch->board->status == DISABLED) - return; - assertgwinon(ch); - /* Remember head (As well as max) is just an offset not a base addr */ - head = readw(&ch->mailbox->cin); - /* cmdStart is a base address */ - cmdStart = readw(&ch->mailbox->cstart); - /* - * We do the addition below because we do not want a max pointer - * relative to cmdStart. We want a max pointer that points at the - * physical end of the command queue. - */ - cmdMax = (cmdStart + 4 + readw(&ch->mailbox->cmax)); - memaddr = ch->board->re_map_membase; - - if (head >= (cmdMax - cmdStart) || (head & 03)) { - printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", - __LINE__, cmd, head); - printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", - __LINE__, cmdMax, cmdStart); - return; - } - if (bytecmd) { - writeb(cmd, memaddr + head + cmdStart + 0); - writeb(ch->channelnum, memaddr + head + cmdStart + 1); - /* Below word_or_byte is bits to set */ - writeb(word_or_byte, memaddr + head + cmdStart + 2); - /* Below byte2 is bits to reset */ - writeb(byte2, memaddr + head + cmdStart + 3); - } else { - writeb(cmd, memaddr + head + cmdStart + 0); - writeb(ch->channelnum, memaddr + head + cmdStart + 1); - writeb(word_or_byte, memaddr + head + cmdStart + 2); - } - head = (head + 4) & (cmdMax - cmdStart - 4); - writew(head, &ch->mailbox->cin); - count = FEPTIMEOUT; - - for (;;) { - count--; - if (count == 0) { - printk(KERN_ERR " - Fep not responding in fepcmd()\n"); - return; - } - head = readw(&ch->mailbox->cin); - cmdTail = readw(&ch->mailbox->cout); - n = (head - cmdTail) & (cmdMax - cmdStart - 4); - /* - * Basically this will break when the FEP acknowledges the - * command by incrementing cmdTail (Making it equal to head). - */ - if (n <= ncmds * (sizeof(short) * 4)) - break; - } -} - -/* - * Digi products use fields in their channels structures that are very similar - * to the c_cflag and c_iflag fields typically found in UNIX termios - * structures. The below three routines allow mappings between these hardware - * "flags" and their respective Linux flags. - */ -static unsigned termios2digi_h(struct channel *ch, unsigned cflag) -{ - unsigned res = 0; - - if (cflag & CRTSCTS) { - ch->digiext.digi_flags |= (RTSPACE | CTSPACE); - res |= ((ch->m_cts) | (ch->m_rts)); - } - - if (ch->digiext.digi_flags & RTSPACE) - res |= ch->m_rts; - - if (ch->digiext.digi_flags & DTRPACE) - res |= ch->m_dtr; - - if (ch->digiext.digi_flags & CTSPACE) - res |= ch->m_cts; - - if (ch->digiext.digi_flags & DSRPACE) - res |= ch->dsr; - - if (ch->digiext.digi_flags & DCDPACE) - res |= ch->dcd; - - if (res & (ch->m_rts)) - ch->digiext.digi_flags |= RTSPACE; - - if (res & (ch->m_cts)) - ch->digiext.digi_flags |= CTSPACE; - - return res; -} - -static unsigned termios2digi_i(struct channel *ch, unsigned iflag) -{ - unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | - INPCK | ISTRIP | IXON | IXANY | IXOFF); - if (ch->digiext.digi_flags & DIGI_AIXON) - res |= IAIXON; - return res; -} - -static unsigned termios2digi_c(struct channel *ch, unsigned cflag) -{ - unsigned res = 0; - if (cflag & CBAUDEX) { - ch->digiext.digi_flags |= DIGI_FAST; - /* - * HUPCL bit is used by FEP to indicate fast baud table is to - * be used. - */ - res |= FEP_HUPCL; - } else - ch->digiext.digi_flags &= ~DIGI_FAST; - /* - * CBAUD has bit position 0x1000 set these days to indicate Linux - * baud rate remap. Digi hardware can't handle the bit assignment. - * (We use a different bit assignment for high speed.). Clear this - * bit out. - */ - res |= cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE); - /* - * This gets a little confusing. The Digi cards have their own - * representation of c_cflags controlling baud rate. For the most part - * this is identical to the Linux implementation. However; Digi - * supports one rate (76800) that Linux doesn't. This means that the - * c_cflag entry that would normally mean 76800 for Digi actually means - * 115200 under Linux. Without the below mapping, a stty 115200 would - * only drive the board at 76800. Since the rate 230400 is also found - * after 76800, the same problem afflicts us when we choose a rate of - * 230400. Without the below modificiation stty 230400 would actually - * give us 115200. - * - * There are two additional differences. The Linux value for CLOCAL - * (0x800; 0004000) has no meaning to the Digi hardware. Also in later - * releases of Linux; the CBAUD define has CBAUDEX (0x1000; 0010000) - * ored into it (CBAUD = 0x100f as opposed to 0xf). CBAUDEX should be - * checked for a screened out prior to termios2digi_c returning. Since - * CLOCAL isn't used by the board this can be ignored as long as the - * returned value is used only by Digi hardware. - */ - if (cflag & CBAUDEX) { - /* - * The below code is trying to guarantee that only baud rates - * 115200 and 230400 are remapped. We use exclusive or because - * the various baud rates share common bit positions and - * therefore can't be tested for easily. - */ - if ((!((cflag & 0x7) ^ (B115200 & ~CBAUDEX))) || - (!((cflag & 0x7) ^ (B230400 & ~CBAUDEX)))) - res += 1; - } - return res; -} - -/* Caller must hold the locks */ -static void epcaparam(struct tty_struct *tty, struct channel *ch) -{ - unsigned int cmdHead; - struct ktermios *ts; - struct board_chan __iomem *bc; - unsigned mval, hflow, cflag, iflag; - - bc = ch->brdchan; - epcaassert(bc != NULL, "bc out of range"); - - assertgwinon(ch); - ts = tty->termios; - if ((ts->c_cflag & CBAUD) == 0) { /* Begin CBAUD detected */ - cmdHead = readw(&bc->rin); - writew(cmdHead, &bc->rout); - cmdHead = readw(&bc->tin); - /* Changing baud in mid-stream transmission can be wonderful */ - /* - * Flush current transmit buffer by setting cmdTail pointer - * (tout) to cmdHead pointer (tin). Hopefully the transmit - * buffer is empty. - */ - fepcmd(ch, STOUT, (unsigned) cmdHead, 0, 0, 0); - mval = 0; - } else { /* Begin CBAUD not detected */ - /* - * c_cflags have changed but that change had nothing to do with - * BAUD. Propagate the change to the card. - */ - cflag = termios2digi_c(ch, ts->c_cflag); - if (cflag != ch->fepcflag) { - ch->fepcflag = cflag; - /* Set baud rate, char size, stop bits, parity */ - fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0); - } - /* - * If the user has not forced CLOCAL and if the device is not a - * CALLOUT device (Which is always CLOCAL) we set flags such - * that the driver will wait on carrier detect. - */ - if (ts->c_cflag & CLOCAL) - clear_bit(ASYNCB_CHECK_CD, &ch->port.flags); - else - set_bit(ASYNCB_CHECK_CD, &ch->port.flags); - mval = ch->m_dtr | ch->m_rts; - } /* End CBAUD not detected */ - iflag = termios2digi_i(ch, ts->c_iflag); - /* Check input mode flags */ - if (iflag != ch->fepiflag) { - ch->fepiflag = iflag; - /* - * Command sets channels iflag structure on the board. Such - * things as input soft flow control, handling of parity - * errors, and break handling are all set here. - * - * break handling, parity handling, input stripping, - * flow control chars - */ - fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); - } - /* - * Set the board mint value for this channel. This will cause hardware - * events to be generated each time the DCD signal (Described in mint) - * changes. - */ - writeb(ch->dcd, &bc->mint); - if ((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD)) - if (ch->digiext.digi_flags & DIGI_FORCEDCD) - writeb(0, &bc->mint); - ch->imodem = readb(&bc->mstat); - hflow = termios2digi_h(ch, ts->c_cflag); - if (hflow != ch->hflow) { - ch->hflow = hflow; - /* - * Hard flow control has been selected but the board is not - * using it. Activate hard flow control now. - */ - fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1); - } - mval ^= ch->modemfake & (mval ^ ch->modem); - - if (ch->omodem ^ mval) { - ch->omodem = mval; - /* - * The below command sets the DTR and RTS mstat structure. If - * hard flow control is NOT active these changes will drive the - * output of the actual DTR and RTS lines. If hard flow control - * is active, the changes will be saved in the mstat structure - * and only asserted when hard flow control is turned off. - */ - - /* First reset DTR & RTS; then set them */ - fepcmd(ch, SETMODEM, 0, ((ch->m_dtr)|(ch->m_rts)), 0, 1); - fepcmd(ch, SETMODEM, mval, 0, 0, 1); - } - if (ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) { - ch->fepstartc = ch->startc; - ch->fepstopc = ch->stopc; - /* - * The XON / XOFF characters have changed; propagate these - * changes to the card. - */ - fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); - } - if (ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) { - ch->fepstartca = ch->startca; - ch->fepstopca = ch->stopca; - /* - * Similar to the above, this time the auxilarly XON / XOFF - * characters have changed; propagate these changes to the card. - */ - fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); - } -} - -/* Caller holds lock */ -static void receive_data(struct channel *ch, struct tty_struct *tty) -{ - unchar *rptr; - struct ktermios *ts = NULL; - struct board_chan __iomem *bc; - int dataToRead, wrapgap, bytesAvailable; - unsigned int tail, head; - unsigned int wrapmask; - - /* - * This routine is called by doint when a receive data event has taken - * place. - */ - globalwinon(ch); - if (ch->statusflags & RXSTOPPED) - return; - if (tty) - ts = tty->termios; - bc = ch->brdchan; - BUG_ON(!bc); - wrapmask = ch->rxbufsize - 1; - - /* - * Get the head and tail pointers to the receiver queue. Wrap the head - * pointer if it has reached the end of the buffer. - */ - head = readw(&bc->rin); - head &= wrapmask; - tail = readw(&bc->rout) & wrapmask; - - bytesAvailable = (head - tail) & wrapmask; - if (bytesAvailable == 0) - return; - - /* If CREAD bit is off or device not open, set TX tail to head */ - if (!tty || !ts || !(ts->c_cflag & CREAD)) { - writew(head, &bc->rout); - return; - } - - if (tty_buffer_request_room(tty, bytesAvailable + 1) == 0) - return; - - if (readb(&bc->orun)) { - writeb(0, &bc->orun); - printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n", - tty->name); - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } - rxwinon(ch); - while (bytesAvailable > 0) { - /* Begin while there is data on the card */ - wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; - /* - * Even if head has wrapped around only report the amount of - * data to be equal to the size - tail. Remember memcpy can't - * automaticly wrap around the receive buffer. - */ - dataToRead = (wrapgap < bytesAvailable) ? wrapgap - : bytesAvailable; - /* Make sure we don't overflow the buffer */ - dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead); - if (dataToRead == 0) - break; - /* - * Move data read from our card into the line disciplines - * buffer for translation if necessary. - */ - memcpy_fromio(rptr, ch->rxptr + tail, dataToRead); - tail = (tail + dataToRead) & wrapmask; - bytesAvailable -= dataToRead; - } /* End while there is data on the card */ - globalwinon(ch); - writew(tail, &bc->rout); - /* Must be called with global data */ - tty_schedule_flip(tty); -} - -static int info_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - switch (cmd) { - case DIGI_GETINFO: - { - struct digi_info di; - int brd; - - if (get_user(brd, (unsigned int __user *)arg)) - return -EFAULT; - if (brd < 0 || brd >= num_cards || num_cards == 0) - return -ENODEV; - - memset(&di, 0, sizeof(di)); - - di.board = brd; - di.status = boards[brd].status; - di.type = boards[brd].type ; - di.numports = boards[brd].numports ; - /* Legacy fixups - just move along nothing to see */ - di.port = (unsigned char *)boards[brd].port ; - di.membase = (unsigned char *)boards[brd].membase ; - - if (copy_to_user((void __user *)arg, &di, sizeof(di))) - return -EFAULT; - break; - - } - - case DIGI_POLLER: - { - int brd = arg & 0xff000000 >> 16; - unsigned char state = arg & 0xff; - - if (brd < 0 || brd >= num_cards) { - printk(KERN_ERR "epca: DIGI POLLER : brd not valid!\n"); - return -ENODEV; - } - digi_poller_inhibited = state; - break; - } - - case DIGI_INIT: - { - /* - * This call is made by the apps to complete the - * initialization of the board(s). This routine is - * responsible for setting the card to its initial - * state and setting the drivers control fields to the - * sutianle settings for the card in question. - */ - int crd; - for (crd = 0; crd < num_cards; crd++) - post_fep_init(crd); - break; - } - default: - return -ENOTTY; - } - return 0; -} - -static int pc_tiocmget(struct tty_struct *tty) -{ - struct channel *ch = tty->driver_data; - struct board_chan __iomem *bc; - unsigned int mstat, mflag = 0; - unsigned long flags; - - if (ch) - bc = ch->brdchan; - else - return -EINVAL; - - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - mstat = readb(&bc->mstat); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - - if (mstat & ch->m_dtr) - mflag |= TIOCM_DTR; - if (mstat & ch->m_rts) - mflag |= TIOCM_RTS; - if (mstat & ch->m_cts) - mflag |= TIOCM_CTS; - if (mstat & ch->dsr) - mflag |= TIOCM_DSR; - if (mstat & ch->m_ri) - mflag |= TIOCM_RI; - if (mstat & ch->dcd) - mflag |= TIOCM_CD; - return mflag; -} - -static int pc_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct channel *ch = tty->driver_data; - unsigned long flags; - - if (!ch) - return -EINVAL; - - spin_lock_irqsave(&epca_lock, flags); - /* - * I think this modemfake stuff is broken. It doesn't correctly reflect - * the behaviour desired by the TIOCM* ioctls. Therefore this is - * probably broken. - */ - if (set & TIOCM_RTS) { - ch->modemfake |= ch->m_rts; - ch->modem |= ch->m_rts; - } - if (set & TIOCM_DTR) { - ch->modemfake |= ch->m_dtr; - ch->modem |= ch->m_dtr; - } - if (clear & TIOCM_RTS) { - ch->modemfake |= ch->m_rts; - ch->modem &= ~ch->m_rts; - } - if (clear & TIOCM_DTR) { - ch->modemfake |= ch->m_dtr; - ch->modem &= ~ch->m_dtr; - } - globalwinon(ch); - /* - * The below routine generally sets up parity, baud, flow control - * issues, etc.... It effect both control flags and input flags. - */ - epcaparam(tty, ch); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - return 0; -} - -static int pc_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - digiflow_t dflow; - unsigned long flags; - unsigned int mflag, mstat; - unsigned char startc, stopc; - struct board_chan __iomem *bc; - struct channel *ch = tty->driver_data; - void __user *argp = (void __user *)arg; - - if (ch) - bc = ch->brdchan; - else - return -EINVAL; - switch (cmd) { - case TIOCMODG: - mflag = pc_tiocmget(tty); - if (put_user(mflag, (unsigned long __user *)argp)) - return -EFAULT; - break; - case TIOCMODS: - if (get_user(mstat, (unsigned __user *)argp)) - return -EFAULT; - return pc_tiocmset(tty, mstat, ~mstat); - case TIOCSDTR: - spin_lock_irqsave(&epca_lock, flags); - ch->omodem |= ch->m_dtr; - globalwinon(ch); - fepcmd(ch, SETMODEM, ch->m_dtr, 0, 10, 1); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - break; - - case TIOCCDTR: - spin_lock_irqsave(&epca_lock, flags); - ch->omodem &= ~ch->m_dtr; - globalwinon(ch); - fepcmd(ch, SETMODEM, 0, ch->m_dtr, 10, 1); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - break; - case DIGI_GETA: - if (copy_to_user(argp, &ch->digiext, sizeof(digi_t))) - return -EFAULT; - break; - case DIGI_SETAW: - case DIGI_SETAF: - if (cmd == DIGI_SETAW) { - /* Setup an event to indicate when the transmit - buffer empties */ - spin_lock_irqsave(&epca_lock, flags); - setup_empty_event(tty, ch); - spin_unlock_irqrestore(&epca_lock, flags); - tty_wait_until_sent(tty, 0); - } else { - /* ldisc lock already held in ioctl */ - if (tty->ldisc->ops->flush_buffer) - tty->ldisc->ops->flush_buffer(tty); - } - /* Fall Thru */ - case DIGI_SETA: - if (copy_from_user(&ch->digiext, argp, sizeof(digi_t))) - return -EFAULT; - - if (ch->digiext.digi_flags & DIGI_ALTPIN) { - ch->dcd = ch->m_dsr; - ch->dsr = ch->m_dcd; - } else { - ch->dcd = ch->m_dcd; - ch->dsr = ch->m_dsr; - } - - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - - /* - * The below routine generally sets up parity, baud, flow - * control issues, etc.... It effect both control flags and - * input flags. - */ - epcaparam(tty, ch); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - break; - - case DIGI_GETFLOW: - case DIGI_GETAFLOW: - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - if (cmd == DIGI_GETFLOW) { - dflow.startc = readb(&bc->startc); - dflow.stopc = readb(&bc->stopc); - } else { - dflow.startc = readb(&bc->startca); - dflow.stopc = readb(&bc->stopca); - } - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - - if (copy_to_user(argp, &dflow, sizeof(dflow))) - return -EFAULT; - break; - - case DIGI_SETAFLOW: - case DIGI_SETFLOW: - if (cmd == DIGI_SETFLOW) { - startc = ch->startc; - stopc = ch->stopc; - } else { - startc = ch->startca; - stopc = ch->stopca; - } - - if (copy_from_user(&dflow, argp, sizeof(dflow))) - return -EFAULT; - - if (dflow.startc != startc || dflow.stopc != stopc) { - /* Begin if setflow toggled */ - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - - if (cmd == DIGI_SETFLOW) { - ch->fepstartc = ch->startc = dflow.startc; - ch->fepstopc = ch->stopc = dflow.stopc; - fepcmd(ch, SONOFFC, ch->fepstartc, - ch->fepstopc, 0, 1); - } else { - ch->fepstartca = ch->startca = dflow.startc; - ch->fepstopca = ch->stopca = dflow.stopc; - fepcmd(ch, SAUXONOFFC, ch->fepstartca, - ch->fepstopca, 0, 1); - } - - if (ch->statusflags & TXSTOPPED) - pc_start(tty); - - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - } /* End if setflow toggled */ - break; - default: - return -ENOIOCTLCMD; - } - return 0; -} - -static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct channel *ch; - unsigned long flags; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - - if (ch != NULL) { /* Begin if channel valid */ - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - epcaparam(tty, ch); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - - if ((old_termios->c_cflag & CRTSCTS) && - ((tty->termios->c_cflag & CRTSCTS) == 0)) - tty->hw_stopped = 0; - - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&ch->port.open_wait); - - } /* End if channel valid */ -} - -static void do_softint(struct work_struct *work) -{ - struct channel *ch = container_of(work, struct channel, tqueue); - /* Called in response to a modem change event */ - if (ch && ch->magic == EPCA_MAGIC) { - struct tty_struct *tty = tty_port_tty_get(&ch->port); - - if (tty && tty->driver_data) { - if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) { - tty_hangup(tty); - wake_up_interruptible(&ch->port.open_wait); - clear_bit(ASYNCB_NORMAL_ACTIVE, - &ch->port.flags); - } - } - tty_kref_put(tty); - } -} - -/* - * pc_stop and pc_start provide software flow control to the routine and the - * pc_ioctl routine. - */ -static void pc_stop(struct tty_struct *tty) -{ - struct channel *ch; - unsigned long flags; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch != NULL) { - spin_lock_irqsave(&epca_lock, flags); - if ((ch->statusflags & TXSTOPPED) == 0) { - /* Begin if transmit stop requested */ - globalwinon(ch); - /* STOP transmitting now !! */ - fepcmd(ch, PAUSETX, 0, 0, 0, 0); - ch->statusflags |= TXSTOPPED; - memoff(ch); - } /* End if transmit stop requested */ - spin_unlock_irqrestore(&epca_lock, flags); - } -} - -static void pc_start(struct tty_struct *tty) -{ - struct channel *ch; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch != NULL) { - unsigned long flags; - spin_lock_irqsave(&epca_lock, flags); - /* Just in case output was resumed because of a change - in Digi-flow */ - if (ch->statusflags & TXSTOPPED) { - /* Begin transmit resume requested */ - struct board_chan __iomem *bc; - globalwinon(ch); - bc = ch->brdchan; - if (ch->statusflags & LOWWAIT) - writeb(1, &bc->ilow); - /* Okay, you can start transmitting again... */ - fepcmd(ch, RESUMETX, 0, 0, 0, 0); - ch->statusflags &= ~TXSTOPPED; - memoff(ch); - } /* End transmit resume requested */ - spin_unlock_irqrestore(&epca_lock, flags); - } -} - -/* - * The below routines pc_throttle and pc_unthrottle are used to slow (And - * resume) the receipt of data into the kernels receive buffers. The exact - * occurrence of this depends on the size of the kernels receive buffer and - * what the 'watermarks' are set to for that buffer. See the n_ttys.c file for - * more details. - */ -static void pc_throttle(struct tty_struct *tty) -{ - struct channel *ch; - unsigned long flags; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch != NULL) { - spin_lock_irqsave(&epca_lock, flags); - if ((ch->statusflags & RXSTOPPED) == 0) { - globalwinon(ch); - fepcmd(ch, PAUSERX, 0, 0, 0, 0); - ch->statusflags |= RXSTOPPED; - memoff(ch); - } - spin_unlock_irqrestore(&epca_lock, flags); - } -} - -static void pc_unthrottle(struct tty_struct *tty) -{ - struct channel *ch; - unsigned long flags; - /* - * verifyChannel returns the channel from the tty struct if it is - * valid. This serves as a sanity check. - */ - ch = verifyChannel(tty); - if (ch != NULL) { - /* Just in case output was resumed because of a change - in Digi-flow */ - spin_lock_irqsave(&epca_lock, flags); - if (ch->statusflags & RXSTOPPED) { - globalwinon(ch); - fepcmd(ch, RESUMERX, 0, 0, 0, 0); - ch->statusflags &= ~RXSTOPPED; - memoff(ch); - } - spin_unlock_irqrestore(&epca_lock, flags); - } -} - -static int pc_send_break(struct tty_struct *tty, int msec) -{ - struct channel *ch = tty->driver_data; - unsigned long flags; - - if (msec == -1) - msec = 0xFFFF; - else if (msec > 0xFFFE) - msec = 0xFFFE; - else if (msec < 1) - msec = 1; - - spin_lock_irqsave(&epca_lock, flags); - globalwinon(ch); - /* - * Maybe I should send an infinite break here, schedule() for msec - * amount of time, and then stop the break. This way, the user can't - * screw up the FEP by causing digi_send_break() to be called (i.e. via - * an ioctl()) more than once in msec amount of time. - * Try this for now... - */ - fepcmd(ch, SENDBREAK, msec, 0, 10, 0); - memoff(ch); - spin_unlock_irqrestore(&epca_lock, flags); - return 0; -} - -/* Caller MUST hold the lock */ -static void setup_empty_event(struct tty_struct *tty, struct channel *ch) -{ - struct board_chan __iomem *bc = ch->brdchan; - - globalwinon(ch); - ch->statusflags |= EMPTYWAIT; - /* - * When set the iempty flag request a event to be generated when the - * transmit buffer is empty (If there is no BREAK in progress). - */ - writeb(1, &bc->iempty); - memoff(ch); -} - -#ifndef MODULE -static void __init epca_setup(char *str, int *ints) -{ - struct board_info board; - int index, loop, last; - char *temp, *t2; - unsigned len; - - /* - * If this routine looks a little strange it is because it is only - * called if a LILO append command is given to boot the kernel with - * parameters. In this way, we can provide the user a method of - * changing his board configuration without rebuilding the kernel. - */ - if (!liloconfig) - liloconfig = 1; - - memset(&board, 0, sizeof(board)); - - /* Assume the data is int first, later we can change it */ - /* I think that array position 0 of ints holds the number of args */ - for (last = 0, index = 1; index <= ints[0]; index++) - switch (index) { /* Begin parse switch */ - case 1: - board.status = ints[index]; - /* - * We check for 2 (As opposed to 1; because 2 is a flag - * instructing the driver to ignore epcaconfig.) For - * this reason we check for 2. - */ - if (board.status == 2) { - /* Begin ignore epcaconfig as well as lilo cmd line */ - nbdevs = 0; - num_cards = 0; - return; - } /* End ignore epcaconfig as well as lilo cmd line */ - - if (board.status > 2) { - printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", - board.status); - invalid_lilo_config = 1; - setup_error_code |= INVALID_BOARD_STATUS; - return; - } - last = index; - break; - case 2: - board.type = ints[index]; - if (board.type >= PCIXEM) { - printk(KERN_ERR "epca_setup: Invalid board type 0x%x\n", board.type); - invalid_lilo_config = 1; - setup_error_code |= INVALID_BOARD_TYPE; - return; - } - last = index; - break; - case 3: - board.altpin = ints[index]; - if (board.altpin > 1) { - printk(KERN_ERR "epca_setup: Invalid board altpin 0x%x\n", board.altpin); - invalid_lilo_config = 1; - setup_error_code |= INVALID_ALTPIN; - return; - } - last = index; - break; - - case 4: - board.numports = ints[index]; - if (board.numports < 2 || board.numports > 256) { - printk(KERN_ERR "epca_setup: Invalid board numports 0x%x\n", board.numports); - invalid_lilo_config = 1; - setup_error_code |= INVALID_NUM_PORTS; - return; - } - nbdevs += board.numports; - last = index; - break; - - case 5: - board.port = ints[index]; - if (ints[index] <= 0) { - printk(KERN_ERR "epca_setup: Invalid io port 0x%x\n", (unsigned int)board.port); - invalid_lilo_config = 1; - setup_error_code |= INVALID_PORT_BASE; - return; - } - last = index; - break; - - case 6: - board.membase = ints[index]; - if (ints[index] <= 0) { - printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n", - (unsigned int)board.membase); - invalid_lilo_config = 1; - setup_error_code |= INVALID_MEM_BASE; - return; - } - last = index; - break; - - default: - printk(KERN_ERR " - epca_setup: Too many integer parms\n"); - return; - - } /* End parse switch */ - - while (str && *str) { /* Begin while there is a string arg */ - /* find the next comma or terminator */ - temp = str; - /* While string is not null, and a comma hasn't been found */ - while (*temp && (*temp != ',')) - temp++; - if (!*temp) - temp = NULL; - else - *temp++ = 0; - /* Set index to the number of args + 1 */ - index = last + 1; - - switch (index) { - case 1: - len = strlen(str); - if (strncmp("Disable", str, len) == 0) - board.status = 0; - else if (strncmp("Enable", str, len) == 0) - board.status = 1; - else { - printk(KERN_ERR "epca_setup: Invalid status %s\n", str); - invalid_lilo_config = 1; - setup_error_code |= INVALID_BOARD_STATUS; - return; - } - last = index; - break; - - case 2: - for (loop = 0; loop < EPCA_NUM_TYPES; loop++) - if (strcmp(board_desc[loop], str) == 0) - break; - /* - * If the index incremented above refers to a - * legitamate board type set it here. - */ - if (index < EPCA_NUM_TYPES) - board.type = loop; - else { - printk(KERN_ERR "epca_setup: Invalid board type: %s\n", str); - invalid_lilo_config = 1; - setup_error_code |= INVALID_BOARD_TYPE; - return; - } - last = index; - break; - - case 3: - len = strlen(str); - if (strncmp("Disable", str, len) == 0) - board.altpin = 0; - else if (strncmp("Enable", str, len) == 0) - board.altpin = 1; - else { - printk(KERN_ERR "epca_setup: Invalid altpin %s\n", str); - invalid_lilo_config = 1; - setup_error_code |= INVALID_ALTPIN; - return; - } - last = index; - break; - - case 4: - t2 = str; - while (isdigit(*t2)) - t2++; - - if (*t2) { - printk(KERN_ERR "epca_setup: Invalid port count %s\n", str); - invalid_lilo_config = 1; - setup_error_code |= INVALID_NUM_PORTS; - return; - } - - /* - * There is not a man page for simple_strtoul but the - * code can be found in vsprintf.c. The first argument - * is the string to translate (To an unsigned long - * obviously), the second argument can be the address - * of any character variable or a NULL. If a variable - * is given, the end pointer of the string will be - * stored in that variable; if a NULL is given the end - * pointer will not be returned. The last argument is - * the base to use. If a 0 is indicated, the routine - * will attempt to determine the proper base by looking - * at the values prefix (A '0' for octal, a 'x' for - * hex, etc ... If a value is given it will use that - * value as the base. - */ - board.numports = simple_strtoul(str, NULL, 0); - nbdevs += board.numports; - last = index; - break; - - case 5: - t2 = str; - while (isxdigit(*t2)) - t2++; - - if (*t2) { - printk(KERN_ERR "epca_setup: Invalid i/o address %s\n", str); - invalid_lilo_config = 1; - setup_error_code |= INVALID_PORT_BASE; - return; - } - - board.port = simple_strtoul(str, NULL, 16); - last = index; - break; - - case 6: - t2 = str; - while (isxdigit(*t2)) - t2++; - - if (*t2) { - printk(KERN_ERR "epca_setup: Invalid memory base %s\n", str); - invalid_lilo_config = 1; - setup_error_code |= INVALID_MEM_BASE; - return; - } - board.membase = simple_strtoul(str, NULL, 16); - last = index; - break; - default: - printk(KERN_ERR "epca: Too many string parms\n"); - return; - } - str = temp; - } /* End while there is a string arg */ - - if (last < 6) { - printk(KERN_ERR "epca: Insufficient parms specified\n"); - return; - } - - /* I should REALLY validate the stuff here */ - /* Copies our local copy of board into boards */ - memcpy((void *)&boards[num_cards], (void *)&board, sizeof(board)); - /* Does this get called once per lilo arg are what ? */ - printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n", - num_cards, board_desc[board.type], - board.numports, (int)board.port, (unsigned int) board.membase); - num_cards++; -} - -static int __init epca_real_setup(char *str) -{ - int ints[11]; - - epca_setup(get_options(str, 11, ints), ints); - return 1; -} - -__setup("digiepca", epca_real_setup); -#endif - -enum epic_board_types { - brd_xr = 0, - brd_xem, - brd_cx, - brd_xrj, -}; - -/* indexed directly by epic_board_types enum */ -static struct { - unsigned char board_type; - unsigned bar_idx; /* PCI base address region */ -} epca_info_tbl[] = { - { PCIXR, 0, }, - { PCIXEM, 0, }, - { PCICX, 0, }, - { PCIXRJ, 2, }, -}; - -static int __devinit epca_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - static int board_num = -1; - int board_idx, info_idx = ent->driver_data; - unsigned long addr; - - if (pci_enable_device(pdev)) - return -EIO; - - board_num++; - board_idx = board_num + num_cards; - if (board_idx >= MAXBOARDS) - goto err_out; - - addr = pci_resource_start(pdev, epca_info_tbl[info_idx].bar_idx); - if (!addr) { - printk(KERN_ERR PFX "PCI region #%d not available (size 0)\n", - epca_info_tbl[info_idx].bar_idx); - goto err_out; - } - - boards[board_idx].status = ENABLED; - boards[board_idx].type = epca_info_tbl[info_idx].board_type; - boards[board_idx].numports = 0x0; - boards[board_idx].port = addr + PCI_IO_OFFSET; - boards[board_idx].membase = addr; - - if (!request_mem_region(addr + PCI_IO_OFFSET, 0x200000, "epca")) { - printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", - 0x200000, addr + PCI_IO_OFFSET); - goto err_out; - } - - boards[board_idx].re_map_port = ioremap_nocache(addr + PCI_IO_OFFSET, - 0x200000); - if (!boards[board_idx].re_map_port) { - printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", - 0x200000, addr + PCI_IO_OFFSET); - goto err_out_free_pciio; - } - - if (!request_mem_region(addr, 0x200000, "epca")) { - printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", - 0x200000, addr); - goto err_out_free_iounmap; - } - - boards[board_idx].re_map_membase = ioremap_nocache(addr, 0x200000); - if (!boards[board_idx].re_map_membase) { - printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", - 0x200000, addr + PCI_IO_OFFSET); - goto err_out_free_memregion; - } - - /* - * I don't know what the below does, but the hardware guys say its - * required on everything except PLX (In this case XRJ). - */ - if (info_idx != brd_xrj) { - pci_write_config_byte(pdev, 0x40, 0); - pci_write_config_byte(pdev, 0x46, 0); - } - - return 0; - -err_out_free_memregion: - release_mem_region(addr, 0x200000); -err_out_free_iounmap: - iounmap(boards[board_idx].re_map_port); -err_out_free_pciio: - release_mem_region(addr + PCI_IO_OFFSET, 0x200000); -err_out: - return -ENODEV; -} - - -static struct pci_device_id epca_pci_tbl[] = { - { PCI_VENDOR_DIGI, PCI_DEVICE_XR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xr }, - { PCI_VENDOR_DIGI, PCI_DEVICE_XEM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xem }, - { PCI_VENDOR_DIGI, PCI_DEVICE_CX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_cx }, - { PCI_VENDOR_DIGI, PCI_DEVICE_XRJ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xrj }, - { 0, } -}; - -MODULE_DEVICE_TABLE(pci, epca_pci_tbl); - -static int __init init_PCI(void) -{ - memset(&epca_driver, 0, sizeof(epca_driver)); - epca_driver.name = "epca"; - epca_driver.id_table = epca_pci_tbl; - epca_driver.probe = epca_init_one; - - return pci_register_driver(&epca_driver); -} - -MODULE_LICENSE("GPL"); diff --git a/drivers/char/epca.h b/drivers/char/epca.h deleted file mode 100644 index d414bf2dbf7c..000000000000 --- a/drivers/char/epca.h +++ /dev/null @@ -1,158 +0,0 @@ -#define XEMPORTS 0xC02 -#define XEPORTS 0xC22 - -#define MAX_ALLOC 0x100 - -#define MAXBOARDS 12 -#define FEPCODESEG 0x0200L -#define FEPCODE 0x2000L -#define BIOSCODE 0xf800L - -#define MISCGLOBAL 0x0C00L -#define NPORT 0x0C22L -#define MBOX 0x0C40L -#define PORTBASE 0x0C90L - -/* Begin code defines used for epca_setup */ - -#define INVALID_BOARD_TYPE 0x1 -#define INVALID_NUM_PORTS 0x2 -#define INVALID_MEM_BASE 0x4 -#define INVALID_PORT_BASE 0x8 -#define INVALID_BOARD_STATUS 0x10 -#define INVALID_ALTPIN 0x20 - -/* End code defines used for epca_setup */ - - -#define FEPCLR 0x00 -#define FEPMEM 0x02 -#define FEPRST 0x04 -#define FEPINT 0x08 -#define FEPMASK 0x0e -#define FEPWIN 0x80 - -#define PCXE 0 -#define PCXEVE 1 -#define PCXEM 2 -#define EISAXEM 3 -#define PC64XE 4 -#define PCXI 5 -#define PCIXEM 7 -#define PCICX 8 -#define PCIXR 9 -#define PCIXRJ 10 -#define EPCA_NUM_TYPES 6 - - -static char *board_desc[] = -{ - "PC/Xe", - "PC/Xeve", - "PC/Xem", - "EISA/Xem", - "PC/64Xe", - "PC/Xi", - "unknown", - "PCI/Xem", - "PCI/CX", - "PCI/Xr", - "PCI/Xrj", -}; - -#define STARTC 021 -#define STOPC 023 -#define IAIXON 0x2000 - - -#define TXSTOPPED 0x1 -#define LOWWAIT 0x2 -#define EMPTYWAIT 0x4 -#define RXSTOPPED 0x8 -#define TXBUSY 0x10 - -#define DISABLED 0 -#define ENABLED 1 -#define OFF 0 -#define ON 1 - -#define FEPTIMEOUT 200000 -#define SERIAL_TYPE_INFO 3 -#define EPCA_EVENT_HANGUP 1 -#define EPCA_MAGIC 0x5c6df104L - -struct channel -{ - long magic; - struct tty_port port; - unsigned char boardnum; - unsigned char channelnum; - unsigned char omodem; /* FEP output modem status */ - unsigned char imodem; /* FEP input modem status */ - unsigned char modemfake; /* Modem values to be forced */ - unsigned char modem; /* Force values */ - unsigned char hflow; - unsigned char dsr; - unsigned char dcd; - unsigned char m_rts ; /* The bits used in whatever FEP */ - unsigned char m_dcd ; /* is indiginous to this board to */ - unsigned char m_dsr ; /* represent each of the physical */ - unsigned char m_cts ; /* handshake lines */ - unsigned char m_ri ; - unsigned char m_dtr ; - unsigned char stopc; - unsigned char startc; - unsigned char stopca; - unsigned char startca; - unsigned char fepstopc; - unsigned char fepstartc; - unsigned char fepstopca; - unsigned char fepstartca; - unsigned char txwin; - unsigned char rxwin; - unsigned short fepiflag; - unsigned short fepcflag; - unsigned short fepoflag; - unsigned short txbufhead; - unsigned short txbufsize; - unsigned short rxbufhead; - unsigned short rxbufsize; - int close_delay; - unsigned long event; - uint dev; - unsigned long statusflags; - unsigned long c_iflag; - unsigned long c_cflag; - unsigned long c_lflag; - unsigned long c_oflag; - unsigned char __iomem *txptr; - unsigned char __iomem *rxptr; - struct board_info *board; - struct board_chan __iomem *brdchan; - struct digi_struct digiext; - struct work_struct tqueue; - struct global_data __iomem *mailbox; -}; - -struct board_info -{ - unsigned char status; - unsigned char type; - unsigned char altpin; - unsigned short numports; - unsigned long port; - unsigned long membase; - void __iomem *re_map_port; - void __iomem *re_map_membase; - unsigned long memory_seg; - void ( * memwinon ) (struct board_info *, unsigned int) ; - void ( * memwinoff ) (struct board_info *, unsigned int) ; - void ( * globalwinon ) (struct channel *) ; - void ( * txwinon ) (struct channel *) ; - void ( * rxwinon ) (struct channel *) ; - void ( * memoff ) (struct channel *) ; - void ( * assertgwinon ) (struct channel *) ; - void ( * assertmemoff ) (struct channel *) ; - unsigned char poller_inhibited ; -}; - diff --git a/drivers/char/epcaconfig.h b/drivers/char/epcaconfig.h deleted file mode 100644 index 55dec067078e..000000000000 --- a/drivers/char/epcaconfig.h +++ /dev/null @@ -1,7 +0,0 @@ -#define NUMCARDS 0 -#define NBDEVS 0 - -struct board_info static_boards[NUMCARDS]={ -}; - -/* DO NOT HAND EDIT THIS FILE! */ diff --git a/drivers/char/ip2/Makefile b/drivers/char/ip2/Makefile deleted file mode 100644 index 7b78e0dfc5b0..000000000000 --- a/drivers/char/ip2/Makefile +++ /dev/null @@ -1,8 +0,0 @@ -# -# Makefile for the Computone IntelliPort Plus Driver -# - -obj-$(CONFIG_COMPUTONE) += ip2.o - -ip2-y := ip2main.o - diff --git a/drivers/char/ip2/i2cmd.c b/drivers/char/ip2/i2cmd.c deleted file mode 100644 index e7af647800b6..000000000000 --- a/drivers/char/ip2/i2cmd.c +++ /dev/null @@ -1,210 +0,0 @@ -/******************************************************************************* -* -* (c) 1998 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Definition table for In-line and Bypass commands. Applicable -* only when the standard loadware is active. (This is included -* source code, not a separate compilation module.) -* -*******************************************************************************/ - -//------------------------------------------------------------------------------ -// -// Revision History: -// -// 10 October 1991 MAG First Draft -// 7 November 1991 MAG Reflects additional commands. -// 24 February 1992 MAG Additional commands for 1.4.x loadware -// 11 March 1992 MAG Additional commands -// 30 March 1992 MAG Additional command: CMD_DSS_NOW -// 18 May 1992 MAG Discovered commands 39 & 40 must be at the end of a -// packet: affects implementation. -//------------------------------------------------------------------------------ - -//************ -//* Includes * -//************ - -#include "i2cmd.h" /* To get some bit-defines */ - -//------------------------------------------------------------------------------ -// Here is the table of global arrays which represent each type of command -// supported in the IntelliPort standard loadware. See also i2cmd.h -// for a more complete explanation of what is going on. -//------------------------------------------------------------------------------ - -// Here are the various globals: note that the names are not used except through -// the macros defined in i2cmd.h. Also note that although they are character -// arrays here (for extendability) they are cast to structure pointers in the -// i2cmd.h macros. See i2cmd.h for flags definitions. - -// Length Flags Command -static UCHAR ct02[] = { 1, BTH, 0x02 }; // DTR UP -static UCHAR ct03[] = { 1, BTH, 0x03 }; // DTR DN -static UCHAR ct04[] = { 1, BTH, 0x04 }; // RTS UP -static UCHAR ct05[] = { 1, BTH, 0x05 }; // RTS DN -static UCHAR ct06[] = { 1, BYP, 0x06 }; // START FL -static UCHAR ct07[] = { 2, BTH, 0x07,0 }; // BAUD -static UCHAR ct08[] = { 2, BTH, 0x08,0 }; // BITS -static UCHAR ct09[] = { 2, BTH, 0x09,0 }; // STOP -static UCHAR ct10[] = { 2, BTH, 0x0A,0 }; // PARITY -static UCHAR ct11[] = { 2, BTH, 0x0B,0 }; // XON -static UCHAR ct12[] = { 2, BTH, 0x0C,0 }; // XOFF -static UCHAR ct13[] = { 1, BTH, 0x0D }; // STOP FL -static UCHAR ct14[] = { 1, BYP|VIP, 0x0E }; // ACK HOTK -//static UCHAR ct15[]={ 2, BTH|VIP, 0x0F,0 }; // IRQ SET -static UCHAR ct16[] = { 2, INL, 0x10,0 }; // IXONOPTS -static UCHAR ct17[] = { 2, INL, 0x11,0 }; // OXONOPTS -static UCHAR ct18[] = { 1, INL, 0x12 }; // CTSENAB -static UCHAR ct19[] = { 1, BTH, 0x13 }; // CTSDSAB -static UCHAR ct20[] = { 1, INL, 0x14 }; // DCDENAB -static UCHAR ct21[] = { 1, BTH, 0x15 }; // DCDDSAB -static UCHAR ct22[] = { 1, BTH, 0x16 }; // DSRENAB -static UCHAR ct23[] = { 1, BTH, 0x17 }; // DSRDSAB -static UCHAR ct24[] = { 1, BTH, 0x18 }; // RIENAB -static UCHAR ct25[] = { 1, BTH, 0x19 }; // RIDSAB -static UCHAR ct26[] = { 2, BTH, 0x1A,0 }; // BRKENAB -static UCHAR ct27[] = { 1, BTH, 0x1B }; // BRKDSAB -//static UCHAR ct28[]={ 2, BTH, 0x1C,0 }; // MAXBLOKSIZE -//static UCHAR ct29[]={ 2, 0, 0x1D,0 }; // reserved -static UCHAR ct30[] = { 1, INL, 0x1E }; // CTSFLOWENAB -static UCHAR ct31[] = { 1, INL, 0x1F }; // CTSFLOWDSAB -static UCHAR ct32[] = { 1, INL, 0x20 }; // RTSFLOWENAB -static UCHAR ct33[] = { 1, INL, 0x21 }; // RTSFLOWDSAB -static UCHAR ct34[] = { 2, BTH, 0x22,0 }; // ISTRIPMODE -static UCHAR ct35[] = { 2, BTH|END, 0x23,0 }; // SENDBREAK -static UCHAR ct36[] = { 2, BTH, 0x24,0 }; // SETERRMODE -//static UCHAR ct36a[]={ 3, INL, 0x24,0,0 }; // SET_REPLACE - -// The following is listed for completeness, but should never be sent directly -// by user-level code. It is sent only by library routines in response to data -// movement. -//static UCHAR ct37[]={ 5, BYP|VIP, 0x25,0,0,0,0 }; // FLOW PACKET - -// Back to normal -//static UCHAR ct38[] = {11, BTH|VAR, 0x26,0,0,0,0,0,0,0,0,0,0 }; // DEF KEY SEQ -//static UCHAR ct39[]={ 3, BTH|END, 0x27,0,0 }; // OPOSTON -//static UCHAR ct40[]={ 1, BTH|END, 0x28 }; // OPOSTOFF -static UCHAR ct41[] = { 1, BYP, 0x29 }; // RESUME -//static UCHAR ct42[]={ 2, BTH, 0x2A,0 }; // TXBAUD -//static UCHAR ct43[]={ 2, BTH, 0x2B,0 }; // RXBAUD -//static UCHAR ct44[]={ 2, BTH, 0x2C,0 }; // MS PING -//static UCHAR ct45[]={ 1, BTH, 0x2D }; // HOTENAB -//static UCHAR ct46[]={ 1, BTH, 0x2E }; // HOTDSAB -//static UCHAR ct47[]={ 7, BTH, 0x2F,0,0,0,0,0,0 }; // UNIX FLAGS -//static UCHAR ct48[]={ 1, BTH, 0x30 }; // DSRFLOWENAB -//static UCHAR ct49[]={ 1, BTH, 0x31 }; // DSRFLOWDSAB -//static UCHAR ct50[]={ 1, BTH, 0x32 }; // DTRFLOWENAB -//static UCHAR ct51[]={ 1, BTH, 0x33 }; // DTRFLOWDSAB -//static UCHAR ct52[]={ 1, BTH, 0x34 }; // BAUDTABRESET -//static UCHAR ct53[] = { 3, BTH, 0x35,0,0 }; // BAUDREMAP -static UCHAR ct54[] = { 3, BTH, 0x36,0,0 }; // CUSTOMBAUD1 -static UCHAR ct55[] = { 3, BTH, 0x37,0,0 }; // CUSTOMBAUD2 -static UCHAR ct56[] = { 2, BTH|END, 0x38,0 }; // PAUSE -static UCHAR ct57[] = { 1, BYP, 0x39 }; // SUSPEND -static UCHAR ct58[] = { 1, BYP, 0x3A }; // UNSUSPEND -static UCHAR ct59[] = { 2, BTH, 0x3B,0 }; // PARITYCHK -static UCHAR ct60[] = { 1, INL|VIP, 0x3C }; // BOOKMARKREQ -//static UCHAR ct61[]={ 2, BTH, 0x3D,0 }; // INTERNALLOOP -//static UCHAR ct62[]={ 2, BTH, 0x3E,0 }; // HOTKTIMEOUT -static UCHAR ct63[] = { 2, INL, 0x3F,0 }; // SETTXON -static UCHAR ct64[] = { 2, INL, 0x40,0 }; // SETTXOFF -//static UCHAR ct65[]={ 2, BTH, 0x41,0 }; // SETAUTORTS -//static UCHAR ct66[]={ 2, BTH, 0x42,0 }; // SETHIGHWAT -//static UCHAR ct67[]={ 2, BYP, 0x43,0 }; // STARTSELFL -//static UCHAR ct68[]={ 2, INL, 0x44,0 }; // ENDSELFL -//static UCHAR ct69[]={ 1, BYP, 0x45 }; // HWFLOW_OFF -//static UCHAR ct70[]={ 1, BTH, 0x46 }; // ODSRFL_ENAB -//static UCHAR ct71[]={ 1, BTH, 0x47 }; // ODSRFL_DSAB -//static UCHAR ct72[]={ 1, BTH, 0x48 }; // ODCDFL_ENAB -//static UCHAR ct73[]={ 1, BTH, 0x49 }; // ODCDFL_DSAB -//static UCHAR ct74[]={ 2, BTH, 0x4A,0 }; // LOADLEVEL -//static UCHAR ct75[]={ 2, BTH, 0x4B,0 }; // STATDATA -//static UCHAR ct76[]={ 1, BYP, 0x4C }; // BREAK_ON -//static UCHAR ct77[]={ 1, BYP, 0x4D }; // BREAK_OFF -//static UCHAR ct78[]={ 1, BYP, 0x4E }; // GETFC -static UCHAR ct79[] = { 2, BYP, 0x4F,0 }; // XMIT_NOW -//static UCHAR ct80[]={ 4, BTH, 0x50,0,0,0 }; // DIVISOR_LATCH -//static UCHAR ct81[]={ 1, BYP, 0x51 }; // GET_STATUS -//static UCHAR ct82[]={ 1, BYP, 0x52 }; // GET_TXCNT -//static UCHAR ct83[]={ 1, BYP, 0x53 }; // GET_RXCNT -//static UCHAR ct84[]={ 1, BYP, 0x54 }; // GET_BOXIDS -//static UCHAR ct85[]={10, BYP, 0x55,0,0,0,0,0,0,0,0,0 }; // ENAB_MULT -//static UCHAR ct86[]={ 2, BTH, 0x56,0 }; // RCV_ENABLE -static UCHAR ct87[] = { 1, BYP, 0x57 }; // HW_TEST -//static UCHAR ct88[]={ 3, BTH, 0x58,0,0 }; // RCV_THRESHOLD -//static UCHAR ct90[]={ 3, BYP, 0x5A,0,0 }; // Set SILO -//static UCHAR ct91[]={ 2, BYP, 0x5B,0 }; // timed break - -// Some composite commands as well -//static UCHAR cc01[]={ 2, BTH, 0x02,0x04 }; // DTR & RTS UP -//static UCHAR cc02[]={ 2, BTH, 0x03,0x05 }; // DTR & RTS DN - -//******** -//* Code * -//******** - -//****************************************************************************** -// Function: i2cmdUnixFlags(iflag, cflag, lflag) -// Parameters: Unix tty flags -// -// Returns: Pointer to command structure -// -// Description: -// -// This routine sets the parameters of command 47 and returns a pointer to the -// appropriate structure. -//****************************************************************************** -#if 0 -cmdSyntaxPtr -i2cmdUnixFlags(unsigned short iflag,unsigned short cflag,unsigned short lflag) -{ - cmdSyntaxPtr pCM = (cmdSyntaxPtr) ct47; - - pCM->cmd[1] = (unsigned char) iflag; - pCM->cmd[2] = (unsigned char) (iflag >> 8); - pCM->cmd[3] = (unsigned char) cflag; - pCM->cmd[4] = (unsigned char) (cflag >> 8); - pCM->cmd[5] = (unsigned char) lflag; - pCM->cmd[6] = (unsigned char) (lflag >> 8); - return pCM; -} -#endif /* 0 */ - -//****************************************************************************** -// Function: i2cmdBaudDef(which, rate) -// Parameters: ? -// -// Returns: Pointer to command structure -// -// Description: -// -// This routine sets the parameters of commands 54 or 55 (according to the -// argument which), and returns a pointer to the appropriate structure. -//****************************************************************************** -static cmdSyntaxPtr -i2cmdBaudDef(int which, unsigned short rate) -{ - cmdSyntaxPtr pCM; - - switch(which) - { - case 1: - pCM = (cmdSyntaxPtr) ct54; - break; - default: - case 2: - pCM = (cmdSyntaxPtr) ct55; - break; - } - pCM->cmd[1] = (unsigned char) rate; - pCM->cmd[2] = (unsigned char) (rate >> 8); - return pCM; -} - diff --git a/drivers/char/ip2/i2cmd.h b/drivers/char/ip2/i2cmd.h deleted file mode 100644 index 29277ec6b8ed..000000000000 --- a/drivers/char/ip2/i2cmd.h +++ /dev/null @@ -1,630 +0,0 @@ -/******************************************************************************* -* -* (c) 1999 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Definitions and support for In-line and Bypass commands. -* Applicable only when the standard loadware is active. -* -*******************************************************************************/ -//------------------------------------------------------------------------------ -// Revision History: -// -// 10 October 1991 MAG First Draft -// 7 November 1991 MAG Reflects some new commands -// 20 February 1992 MAG CMD_HOTACK corrected: no argument. -// 24 February 1992 MAG Support added for new commands for 1.4.x loadware. -// 11 March 1992 MAG Additional commands. -// 16 March 1992 MAG Additional commands. -// 30 March 1992 MAG Additional command: CMD_DSS_NOW -// 18 May 1992 MAG Changed CMD_OPOST -// -//------------------------------------------------------------------------------ -#ifndef I2CMD_H // To prevent multiple includes -#define I2CMD_H 1 - -#include "ip2types.h" - -// This module is designed to provide a uniform method of sending commands to -// the board through command packets. The difficulty is, some commands take -// parameters, others do not. Furthermore, it is often useful to send several -// commands to the same channel as part of the same packet. (See also i2pack.h.) -// -// This module is designed so that the caller should not be responsible for -// remembering the exact syntax of each command, or at least so that the -// compiler could check things somewhat. I'll explain as we go... -// -// First, a structure which can embody the syntax of each type of command. -// -typedef struct _cmdSyntax -{ - UCHAR length; // Number of bytes in the command - UCHAR flags; // Information about the command (see below) - - // The command and its parameters, which may be of arbitrary length. Don't - // worry yet how the parameters will be initialized; macros later take care - // of it. Also, don't worry about the arbitrary length issue; this structure - // is never used to allocate space (see i2cmd.c). - UCHAR cmd[2]; -} cmdSyntax, *cmdSyntaxPtr; - -// Bit assignments for flags - -#define INL 1 // Set if suitable for inline commands -#define BYP 2 // Set if suitable for bypass commands -#define BTH (INL|BYP) // suitable for either! -#define END 4 // Set if this must be the last command in a block -#define VIP 8 // Set if this command is special in some way and really - // should only be sent from the library-level and not - // directly from user-level -#define VAR 0x10 // This command is of variable length! - -// Declarations for the global arrays used to bear the commands and their -// arguments. -// -// Note: Since these are globals and the arguments might change, it is important -// that the library routine COPY these into buffers from whence they would be -// sent, rather than merely storing the pointers. In multi-threaded -// environments, important that the copy should obtain before any context switch -// is allowed. Also, for parameterized commands, DO NOT ISSUE THE SAME COMMAND -// MORE THAN ONCE WITH THE SAME PARAMETERS in the same call. -// -static UCHAR ct02[]; -static UCHAR ct03[]; -static UCHAR ct04[]; -static UCHAR ct05[]; -static UCHAR ct06[]; -static UCHAR ct07[]; -static UCHAR ct08[]; -static UCHAR ct09[]; -static UCHAR ct10[]; -static UCHAR ct11[]; -static UCHAR ct12[]; -static UCHAR ct13[]; -static UCHAR ct14[]; -static UCHAR ct15[]; -static UCHAR ct16[]; -static UCHAR ct17[]; -static UCHAR ct18[]; -static UCHAR ct19[]; -static UCHAR ct20[]; -static UCHAR ct21[]; -static UCHAR ct22[]; -static UCHAR ct23[]; -static UCHAR ct24[]; -static UCHAR ct25[]; -static UCHAR ct26[]; -static UCHAR ct27[]; -static UCHAR ct28[]; -static UCHAR ct29[]; -static UCHAR ct30[]; -static UCHAR ct31[]; -static UCHAR ct32[]; -static UCHAR ct33[]; -static UCHAR ct34[]; -static UCHAR ct35[]; -static UCHAR ct36[]; -static UCHAR ct36a[]; -static UCHAR ct41[]; -static UCHAR ct42[]; -static UCHAR ct43[]; -static UCHAR ct44[]; -static UCHAR ct45[]; -static UCHAR ct46[]; -static UCHAR ct48[]; -static UCHAR ct49[]; -static UCHAR ct50[]; -static UCHAR ct51[]; -static UCHAR ct52[]; -static UCHAR ct56[]; -static UCHAR ct57[]; -static UCHAR ct58[]; -static UCHAR ct59[]; -static UCHAR ct60[]; -static UCHAR ct61[]; -static UCHAR ct62[]; -static UCHAR ct63[]; -static UCHAR ct64[]; -static UCHAR ct65[]; -static UCHAR ct66[]; -static UCHAR ct67[]; -static UCHAR ct68[]; -static UCHAR ct69[]; -static UCHAR ct70[]; -static UCHAR ct71[]; -static UCHAR ct72[]; -static UCHAR ct73[]; -static UCHAR ct74[]; -static UCHAR ct75[]; -static UCHAR ct76[]; -static UCHAR ct77[]; -static UCHAR ct78[]; -static UCHAR ct79[]; -static UCHAR ct80[]; -static UCHAR ct81[]; -static UCHAR ct82[]; -static UCHAR ct83[]; -static UCHAR ct84[]; -static UCHAR ct85[]; -static UCHAR ct86[]; -static UCHAR ct87[]; -static UCHAR ct88[]; -static UCHAR ct89[]; -static UCHAR ct90[]; -static UCHAR ct91[]; -static UCHAR cc01[]; -static UCHAR cc02[]; - -// Now, refer to i2cmd.c, and see the character arrays defined there. They are -// cast here to cmdSyntaxPtr. -// -// There are library functions for issuing bypass or inline commands. These -// functions take one or more arguments of the type cmdSyntaxPtr. The routine -// then can figure out how long each command is supposed to be and easily add it -// to the list. -// -// For ease of use, we define manifests which return pointers to appropriate -// cmdSyntaxPtr things. But some commands also take arguments. If a single -// argument is used, we define a macro which performs the single assignment and -// (through the expedient of a comma expression) references the appropriate -// pointer. For commands requiring several arguments, we actually define a -// function to perform the assignments. - -#define CMD_DTRUP (cmdSyntaxPtr)(ct02) // Raise DTR -#define CMD_DTRDN (cmdSyntaxPtr)(ct03) // Lower DTR -#define CMD_RTSUP (cmdSyntaxPtr)(ct04) // Raise RTS -#define CMD_RTSDN (cmdSyntaxPtr)(ct05) // Lower RTS -#define CMD_STARTFL (cmdSyntaxPtr)(ct06) // Start Flushing Data - -#define CMD_DTRRTS_UP (cmdSyntaxPtr)(cc01) // Raise DTR and RTS -#define CMD_DTRRTS_DN (cmdSyntaxPtr)(cc02) // Lower DTR and RTS - -// Set Baud Rate for transmit and receive -#define CMD_SETBAUD(arg) \ - (((cmdSyntaxPtr)(ct07))->cmd[1] = (arg),(cmdSyntaxPtr)(ct07)) - -#define CBR_50 1 -#define CBR_75 2 -#define CBR_110 3 -#define CBR_134 4 -#define CBR_150 5 -#define CBR_200 6 -#define CBR_300 7 -#define CBR_600 8 -#define CBR_1200 9 -#define CBR_1800 10 -#define CBR_2400 11 -#define CBR_4800 12 -#define CBR_9600 13 -#define CBR_19200 14 -#define CBR_38400 15 -#define CBR_2000 16 -#define CBR_3600 17 -#define CBR_7200 18 -#define CBR_56000 19 -#define CBR_57600 20 -#define CBR_64000 21 -#define CBR_76800 22 -#define CBR_115200 23 -#define CBR_C1 24 // Custom baud rate 1 -#define CBR_C2 25 // Custom baud rate 2 -#define CBR_153600 26 -#define CBR_230400 27 -#define CBR_307200 28 -#define CBR_460800 29 -#define CBR_921600 30 - -// Set Character size -// -#define CMD_SETBITS(arg) \ - (((cmdSyntaxPtr)(ct08))->cmd[1] = (arg),(cmdSyntaxPtr)(ct08)) - -#define CSZ_5 0 -#define CSZ_6 1 -#define CSZ_7 2 -#define CSZ_8 3 - -// Set number of stop bits -// -#define CMD_SETSTOP(arg) \ - (((cmdSyntaxPtr)(ct09))->cmd[1] = (arg),(cmdSyntaxPtr)(ct09)) - -#define CST_1 0 -#define CST_15 1 // 1.5 stop bits -#define CST_2 2 - -// Set parity option -// -#define CMD_SETPAR(arg) \ - (((cmdSyntaxPtr)(ct10))->cmd[1] = (arg),(cmdSyntaxPtr)(ct10)) - -#define CSP_NP 0 // no parity -#define CSP_OD 1 // odd parity -#define CSP_EV 2 // Even parity -#define CSP_SP 3 // Space parity -#define CSP_MK 4 // Mark parity - -// Define xon char for transmitter flow control -// -#define CMD_DEF_IXON(arg) \ - (((cmdSyntaxPtr)(ct11))->cmd[1] = (arg),(cmdSyntaxPtr)(ct11)) - -// Define xoff char for transmitter flow control -// -#define CMD_DEF_IXOFF(arg) \ - (((cmdSyntaxPtr)(ct12))->cmd[1] = (arg),(cmdSyntaxPtr)(ct12)) - -#define CMD_STOPFL (cmdSyntaxPtr)(ct13) // Stop Flushing data - -// Acknowledge receipt of hotkey signal -// -#define CMD_HOTACK (cmdSyntaxPtr)(ct14) - -// Define irq level to use. Should actually be sent by library-level code, not -// directly from user... -// -#define CMDVALUE_IRQ 15 // For library use at initialization. Until this command - // is sent, board processing doesn't really start. -#define CMD_SET_IRQ(arg) \ - (((cmdSyntaxPtr)(ct15))->cmd[1] = (arg),(cmdSyntaxPtr)(ct15)) - -#define CIR_POLL 0 // No IRQ - Poll -#define CIR_3 3 // IRQ 3 -#define CIR_4 4 // IRQ 4 -#define CIR_5 5 // IRQ 5 -#define CIR_7 7 // IRQ 7 -#define CIR_10 10 // IRQ 10 -#define CIR_11 11 // IRQ 11 -#define CIR_12 12 // IRQ 12 -#define CIR_15 15 // IRQ 15 - -// Select transmit flow xon/xoff options -// -#define CMD_IXON_OPT(arg) \ - (((cmdSyntaxPtr)(ct16))->cmd[1] = (arg),(cmdSyntaxPtr)(ct16)) - -#define CIX_NONE 0 // Incoming Xon/Xoff characters not special -#define CIX_XON 1 // Xoff disable, Xon enable -#define CIX_XANY 2 // Xoff disable, any key enable - -// Select receive flow xon/xoff options -// -#define CMD_OXON_OPT(arg) \ - (((cmdSyntaxPtr)(ct17))->cmd[1] = (arg),(cmdSyntaxPtr)(ct17)) - -#define COX_NONE 0 // Don't send Xon/Xoff -#define COX_XON 1 // Send xon/xoff to start/stop incoming data - - -#define CMD_CTS_REP (cmdSyntaxPtr)(ct18) // Enable CTS reporting -#define CMD_CTS_NREP (cmdSyntaxPtr)(ct19) // Disable CTS reporting - -#define CMD_DCD_REP (cmdSyntaxPtr)(ct20) // Enable DCD reporting -#define CMD_DCD_NREP (cmdSyntaxPtr)(ct21) // Disable DCD reporting - -#define CMD_DSR_REP (cmdSyntaxPtr)(ct22) // Enable DSR reporting -#define CMD_DSR_NREP (cmdSyntaxPtr)(ct23) // Disable DSR reporting - -#define CMD_RI_REP (cmdSyntaxPtr)(ct24) // Enable RI reporting -#define CMD_RI_NREP (cmdSyntaxPtr)(ct25) // Disable RI reporting - -// Enable break reporting and select style -// -#define CMD_BRK_REP(arg) \ - (((cmdSyntaxPtr)(ct26))->cmd[1] = (arg),(cmdSyntaxPtr)(ct26)) - -#define CBK_STAT 0x00 // Report breaks as a status (exception,irq) -#define CBK_NULL 0x01 // Report breaks as a good null -#define CBK_STAT_SEQ 0x02 // Report breaks as a status AND as in-band character - // sequence FFh, 01h, 10h -#define CBK_SEQ 0x03 // Report breaks as the in-band - //sequence FFh, 01h, 10h ONLY. -#define CBK_FLSH 0x04 // if this bit set also flush input data -#define CBK_POSIX 0x08 // if this bit set report as FF,0,0 sequence -#define CBK_SINGLE 0x10 // if this bit set with CBK_SEQ or CBK_STAT_SEQ - //then reports single null instead of triple - -#define CMD_BRK_NREP (cmdSyntaxPtr)(ct27) // Disable break reporting - -// Specify maximum block size for received data -// -#define CMD_MAX_BLOCK(arg) \ - (((cmdSyntaxPtr)(ct28))->cmd[1] = (arg),(cmdSyntaxPtr)(ct28)) - -// -- COMMAND 29 is reserved -- - -#define CMD_CTSFL_ENAB (cmdSyntaxPtr)(ct30) // Enable CTS flow control -#define CMD_CTSFL_DSAB (cmdSyntaxPtr)(ct31) // Disable CTS flow control -#define CMD_RTSFL_ENAB (cmdSyntaxPtr)(ct32) // Enable RTS flow control -#define CMD_RTSFL_DSAB (cmdSyntaxPtr)(ct33) // Disable RTS flow control - -// Specify istrip option -// -#define CMD_ISTRIP_OPT(arg) \ - (((cmdSyntaxPtr)(ct34))->cmd[1] = (arg),(cmdSyntaxPtr)(ct34)) - -#define CIS_NOSTRIP 0 // Strip characters to character size -#define CIS_STRIP 1 // Strip any 8-bit characters to 7 bits - -// Send a break of arg milliseconds -// -#define CMD_SEND_BRK(arg) \ - (((cmdSyntaxPtr)(ct35))->cmd[1] = (arg),(cmdSyntaxPtr)(ct35)) - -// Set error reporting mode -// -#define CMD_SET_ERROR(arg) \ - (((cmdSyntaxPtr)(ct36))->cmd[1] = (arg),(cmdSyntaxPtr)(ct36)) - -#define CSE_ESTAT 0 // Report error in a status packet -#define CSE_NOREP 1 // Treat character as though it were good -#define CSE_DROP 2 // Discard the character -#define CSE_NULL 3 // Replace with a null -#define CSE_MARK 4 // Replace with a 3-character sequence (as Unix) - -#define CSE_REPLACE 0x8 // Replace the errored character with the - // replacement character defined here - -#define CSE_STAT_REPLACE 0x18 // Replace the errored character with the - // replacement character defined here AND - // report the error as a status packet (as in - // CSE_ESTAT). - - -// COMMAND 37, to send flow control packets, is handled only by low-level -// library code in response to data movement and shouldn't ever be sent by the -// user code. See i2pack.h and the body of i2lib.c for details. - -// Enable on-board post-processing, using options given in oflag argument. -// Formerly, this command was automatically preceded by a CMD_OPOST_OFF command -// because the loadware does not permit sending back-to-back CMD_OPOST_ON -// commands without an intervening CMD_OPOST_OFF. BUT, WE LEARN 18 MAY 92, that -// CMD_OPOST_ON and CMD_OPOST_OFF must each be at the end of a packet (or in a -// solo packet). This means the caller must specify separately CMD_OPOST_OFF, -// CMD_OPOST_ON(parm) when he calls i2QueueCommands(). That function will ensure -// each gets a separate packet. Extra CMD_OPOST_OFF's are always ok. -// -#define CMD_OPOST_ON(oflag) \ - (*(USHORT *)(((cmdSyntaxPtr)(ct39))->cmd[1]) = (oflag), \ - (cmdSyntaxPtr)(ct39)) - -#define CMD_OPOST_OFF (cmdSyntaxPtr)(ct40) // Disable on-board post-proc - -#define CMD_RESUME (cmdSyntaxPtr)(ct41) // Resume: behave as though an XON - // were received; - -// Set Transmit baud rate (see command 7 for arguments) -// -#define CMD_SETBAUD_TX(arg) \ - (((cmdSyntaxPtr)(ct42))->cmd[1] = (arg),(cmdSyntaxPtr)(ct42)) - -// Set Receive baud rate (see command 7 for arguments) -// -#define CMD_SETBAUD_RX(arg) \ - (((cmdSyntaxPtr)(ct43))->cmd[1] = (arg),(cmdSyntaxPtr)(ct43)) - -// Request interrupt from board each arg milliseconds. Interrupt will specify -// "received data", even though there may be no data present. If arg == 0, -// disables any such interrupts. -// -#define CMD_PING_REQ(arg) \ - (((cmdSyntaxPtr)(ct44))->cmd[1] = (arg),(cmdSyntaxPtr)(ct44)) - -#define CMD_HOT_ENAB (cmdSyntaxPtr)(ct45) // Enable Hot-key checking -#define CMD_HOT_DSAB (cmdSyntaxPtr)(ct46) // Disable Hot-key checking - -#if 0 -// COMMAND 47: Send Protocol info via Unix flags: -// iflag = Unix tty t_iflag -// cflag = Unix tty t_cflag -// lflag = Unix tty t_lflag -// See System V Unix/Xenix documentation for the meanings of the bit fields -// within these flags -// -#define CMD_UNIX_FLAGS(iflag,cflag,lflag) i2cmdUnixFlags(iflag,cflag,lflag) -#endif /* 0 */ - -#define CMD_DSRFL_ENAB (cmdSyntaxPtr)(ct48) // Enable DSR receiver ctrl -#define CMD_DSRFL_DSAB (cmdSyntaxPtr)(ct49) // Disable DSR receiver ctrl -#define CMD_DTRFL_ENAB (cmdSyntaxPtr)(ct50) // Enable DTR flow control -#define CMD_DTRFL_DSAB (cmdSyntaxPtr)(ct51) // Disable DTR flow control -#define CMD_BAUD_RESET (cmdSyntaxPtr)(ct52) // Reset baudrate table - -// COMMAND 54: Define custom rate #1 -// rate = (short) 1/10 of the desired baud rate -// -#define CMD_BAUD_DEF1(rate) i2cmdBaudDef(1,rate) - -// COMMAND 55: Define custom rate #2 -// rate = (short) 1/10 of the desired baud rate -// -#define CMD_BAUD_DEF2(rate) i2cmdBaudDef(2,rate) - -// Pause arg hundredths of seconds. (Note, this is NOT milliseconds.) -// -#define CMD_PAUSE(arg) \ - (((cmdSyntaxPtr)(ct56))->cmd[1] = (arg),(cmdSyntaxPtr)(ct56)) - -#define CMD_SUSPEND (cmdSyntaxPtr)(ct57) // Suspend output -#define CMD_UNSUSPEND (cmdSyntaxPtr)(ct58) // Un-Suspend output - -// Set parity-checking options -// -#define CMD_PARCHK(arg) \ - (((cmdSyntaxPtr)(ct59))->cmd[1] = (arg),(cmdSyntaxPtr)(ct59)) - -#define CPK_ENAB 0 // Enable parity checking on input -#define CPK_DSAB 1 // Disable parity checking on input - -#define CMD_BMARK_REQ (cmdSyntaxPtr)(ct60) // Bookmark request - - -// Enable/Disable internal loopback mode -// -#define CMD_INLOOP(arg) \ - (((cmdSyntaxPtr)(ct61))->cmd[1] = (arg),(cmdSyntaxPtr)(ct61)) - -#define CIN_DISABLE 0 // Normal operation (default) -#define CIN_ENABLE 1 // Internal (local) loopback -#define CIN_REMOTE 2 // Remote loopback - -// Specify timeout for hotkeys: Delay will be (arg x 10) milliseconds, arg == 0 -// --> no timeout: wait forever. -// -#define CMD_HOT_TIME(arg) \ - (((cmdSyntaxPtr)(ct62))->cmd[1] = (arg),(cmdSyntaxPtr)(ct62)) - - -// Define (outgoing) xon for receive flow control -// -#define CMD_DEF_OXON(arg) \ - (((cmdSyntaxPtr)(ct63))->cmd[1] = (arg),(cmdSyntaxPtr)(ct63)) - -// Define (outgoing) xoff for receiver flow control -// -#define CMD_DEF_OXOFF(arg) \ - (((cmdSyntaxPtr)(ct64))->cmd[1] = (arg),(cmdSyntaxPtr)(ct64)) - -// Enable/Disable RTS on transmit (1/2 duplex-style) -// -#define CMD_RTS_XMIT(arg) \ - (((cmdSyntaxPtr)(ct65))->cmd[1] = (arg),(cmdSyntaxPtr)(ct65)) - -#define CHD_DISABLE 0 -#define CHD_ENABLE 1 - -// Set high-water-mark level (debugging use only) -// -#define CMD_SETHIGHWAT(arg) \ - (((cmdSyntaxPtr)(ct66))->cmd[1] = (arg),(cmdSyntaxPtr)(ct66)) - -// Start flushing tagged data (tag = 0-14) -// -#define CMD_START_SELFL(tag) \ - (((cmdSyntaxPtr)(ct67))->cmd[1] = (tag),(cmdSyntaxPtr)(ct67)) - -// End flushing tagged data (tag = 0-14) -// -#define CMD_END_SELFL(tag) \ - (((cmdSyntaxPtr)(ct68))->cmd[1] = (tag),(cmdSyntaxPtr)(ct68)) - -#define CMD_HWFLOW_OFF (cmdSyntaxPtr)(ct69) // Disable HW TX flow control -#define CMD_ODSRFL_ENAB (cmdSyntaxPtr)(ct70) // Enable DSR output f/c -#define CMD_ODSRFL_DSAB (cmdSyntaxPtr)(ct71) // Disable DSR output f/c -#define CMD_ODCDFL_ENAB (cmdSyntaxPtr)(ct72) // Enable DCD output f/c -#define CMD_ODCDFL_DSAB (cmdSyntaxPtr)(ct73) // Disable DCD output f/c - -// Set transmit interrupt load level. Count should be an even value 2-12 -// -#define CMD_LOADLEVEL(count) \ - (((cmdSyntaxPtr)(ct74))->cmd[1] = (count),(cmdSyntaxPtr)(ct74)) - -// If reporting DSS changes, map to character sequence FFh, 2, MSR -// -#define CMD_STATDATA(arg) \ - (((cmdSyntaxPtr)(ct75))->cmd[1] = (arg),(cmdSyntaxPtr)(ct75)) - -#define CSTD_DISABLE// Report DSS changes as status packets only (default) -#define CSTD_ENABLE // Report DSS changes as in-band data sequence as well as - // by status packet. - -#define CMD_BREAK_ON (cmdSyntaxPtr)(ct76)// Set break and stop xmit -#define CMD_BREAK_OFF (cmdSyntaxPtr)(ct77)// End break and restart xmit -#define CMD_GETFC (cmdSyntaxPtr)(ct78)// Request for flow control packet - // from board. - -// Transmit this character immediately -// -#define CMD_XMIT_NOW(ch) \ - (((cmdSyntaxPtr)(ct79))->cmd[1] = (ch),(cmdSyntaxPtr)(ct79)) - -// Set baud rate via "divisor latch" -// -#define CMD_DIVISOR_LATCH(which,value) \ - (((cmdSyntaxPtr)(ct80))->cmd[1] = (which), \ - *(USHORT *)(((cmdSyntaxPtr)(ct80))->cmd[2]) = (value), \ - (cmdSyntaxPtr)(ct80)) - -#define CDL_RX 1 // Set receiver rate -#define CDL_TX 2 // Set transmit rate - // (CDL_TX | CDL_RX) Set both rates - -// Request for special diagnostic status pkt from the board. -// -#define CMD_GET_STATUS (cmdSyntaxPtr)(ct81) - -// Request time-stamped transmit character count packet. -// -#define CMD_GET_TXCNT (cmdSyntaxPtr)(ct82) - -// Request time-stamped receive character count packet. -// -#define CMD_GET_RXCNT (cmdSyntaxPtr)(ct83) - -// Request for box/board I.D. packet. -#define CMD_GET_BOXIDS (cmdSyntaxPtr)(ct84) - -// Enable or disable multiple channels according to bit-mapped ushorts box 1-4 -// -#define CMD_ENAB_MULT(enable, box1, box2, box3, box4) \ - (((cmdSytaxPtr)(ct85))->cmd[1] = (enable), \ - *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[2]) = (box1), \ - *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[4]) = (box2), \ - *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[6]) = (box3), \ - *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[8]) = (box4), \ - (cmdSyntaxPtr)(ct85)) - -#define CEM_DISABLE 0 -#define CEM_ENABLE 1 - -// Enable or disable receiver or receiver interrupts (default both enabled) -// -#define CMD_RCV_ENABLE(ch) \ - (((cmdSyntaxPtr)(ct86))->cmd[1] = (ch),(cmdSyntaxPtr)(ct86)) - -#define CRE_OFF 0 // Disable the receiver -#define CRE_ON 1 // Enable the receiver -#define CRE_INTOFF 2 // Disable receiver interrupts (to loadware) -#define CRE_INTON 3 // Enable receiver interrupts (to loadware) - -// Starts up a hardware test process, which runs transparently, and sends a -// STAT_HWFAIL packet in case a hardware failure is detected. -// -#define CMD_HW_TEST (cmdSyntaxPtr)(ct87) - -// Change receiver threshold and timeout value: -// Defaults: timeout = 20mS -// threshold count = 8 when DTRflow not in use, -// threshold count = 5 when DTRflow in use. -// -#define CMD_RCV_THRESHOLD(count,ms) \ - (((cmdSyntaxPtr)(ct88))->cmd[1] = (count), \ - ((cmdSyntaxPtr)(ct88))->cmd[2] = (ms), \ - (cmdSyntaxPtr)(ct88)) - -// Makes the loadware report DSS signals for this channel immediately. -// -#define CMD_DSS_NOW (cmdSyntaxPtr)(ct89) - -// Set the receive silo parameters -// timeout is ms idle wait until delivery (~VTIME) -// threshold is max characters cause interrupt (~VMIN) -// -#define CMD_SET_SILO(timeout,threshold) \ - (((cmdSyntaxPtr)(ct90))->cmd[1] = (timeout), \ - ((cmdSyntaxPtr)(ct90))->cmd[2] = (threshold), \ - (cmdSyntaxPtr)(ct90)) - -// Set timed break in decisecond (1/10s) -// -#define CMD_LBREAK(ds) \ - (((cmdSyntaxPtr)(ct91))->cmd[1] = (ds),(cmdSyntaxPtr)(ct66)) - - - -#endif // I2CMD_H diff --git a/drivers/char/ip2/i2ellis.c b/drivers/char/ip2/i2ellis.c deleted file mode 100644 index 29db44de399f..000000000000 --- a/drivers/char/ip2/i2ellis.c +++ /dev/null @@ -1,1403 +0,0 @@ -/******************************************************************************* -* -* (c) 1998 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Low-level interface code for the device driver -* (This is included source code, not a separate compilation -* module.) -* -*******************************************************************************/ -//--------------------------------------------- -// Function declarations private to this module -//--------------------------------------------- -// Functions called only indirectly through i2eBordStr entries. - -static int iiWriteBuf16(i2eBordStrPtr, unsigned char *, int); -static int iiWriteBuf8(i2eBordStrPtr, unsigned char *, int); -static int iiReadBuf16(i2eBordStrPtr, unsigned char *, int); -static int iiReadBuf8(i2eBordStrPtr, unsigned char *, int); - -static unsigned short iiReadWord16(i2eBordStrPtr); -static unsigned short iiReadWord8(i2eBordStrPtr); -static void iiWriteWord16(i2eBordStrPtr, unsigned short); -static void iiWriteWord8(i2eBordStrPtr, unsigned short); - -static int iiWaitForTxEmptyII(i2eBordStrPtr, int); -static int iiWaitForTxEmptyIIEX(i2eBordStrPtr, int); -static int iiTxMailEmptyII(i2eBordStrPtr); -static int iiTxMailEmptyIIEX(i2eBordStrPtr); -static int iiTrySendMailII(i2eBordStrPtr, unsigned char); -static int iiTrySendMailIIEX(i2eBordStrPtr, unsigned char); - -static unsigned short iiGetMailII(i2eBordStrPtr); -static unsigned short iiGetMailIIEX(i2eBordStrPtr); - -static void iiEnableMailIrqII(i2eBordStrPtr); -static void iiEnableMailIrqIIEX(i2eBordStrPtr); -static void iiWriteMaskII(i2eBordStrPtr, unsigned char); -static void iiWriteMaskIIEX(i2eBordStrPtr, unsigned char); - -static void ii2Nop(void); - -//*************** -//* Static Data * -//*************** - -static int ii2Safe; // Safe I/O address for delay routine - -static int iiDelayed; // Set when the iiResetDelay function is - // called. Cleared when ANY board is reset. -static DEFINE_RWLOCK(Dl_spinlock); - -//******** -//* Code * -//******** - -//======================================================= -// Initialization Routines -// -// iiSetAddress -// iiReset -// iiResetDelay -// iiInitialize -//======================================================= - -//****************************************************************************** -// Function: iiSetAddress(pB, address, delay) -// Parameters: pB - pointer to the board structure -// address - the purported I/O address of the board -// delay - pointer to the 1-ms delay function to use -// in this and any future operations to this board -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// This routine (roughly) checks for address validity, sets the i2eValid OK and -// sets the state to II_STATE_COLD which means that we haven't even sent a reset -// yet. -// -//****************************************************************************** -static int -iiSetAddress( i2eBordStrPtr pB, int address, delayFunc_t delay ) -{ - // Should any failure occur before init is finished... - pB->i2eValid = I2E_INCOMPLETE; - - // Cannot check upper limit except extremely: Might be microchannel - // Address must be on an 8-byte boundary - - if ((unsigned int)address <= 0x100 - || (unsigned int)address >= 0xfff8 - || (address & 0x7) - ) - { - I2_COMPLETE(pB, I2EE_BADADDR); - } - - // Initialize accelerators - pB->i2eBase = address; - pB->i2eData = address + FIFO_DATA; - pB->i2eStatus = address + FIFO_STATUS; - pB->i2ePointer = address + FIFO_PTR; - pB->i2eXMail = address + FIFO_MAIL; - pB->i2eXMask = address + FIFO_MASK; - - // Initialize i/o address for ii2DelayIO - ii2Safe = address + FIFO_NOP; - - // Initialize the delay routine - pB->i2eDelay = ((delay != (delayFunc_t)NULL) ? delay : (delayFunc_t)ii2Nop); - - pB->i2eValid = I2E_MAGIC; - pB->i2eState = II_STATE_COLD; - - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: iiReset(pB) -// Parameters: pB - pointer to the board structure -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Attempts to reset the board (see also i2hw.h). Normally, we would use this to -// reset a board immediately after iiSetAddress(), but it is valid to reset a -// board from any state, say, in order to change or re-load loadware. (Under -// such circumstances, no reason to re-run iiSetAddress(), which is why it is a -// separate routine and not included in this routine. -// -//****************************************************************************** -static int -iiReset(i2eBordStrPtr pB) -{ - // Magic number should be set, else even the address is suspect - if (pB->i2eValid != I2E_MAGIC) - { - I2_COMPLETE(pB, I2EE_BADMAGIC); - } - - outb(0, pB->i2eBase + FIFO_RESET); /* Any data will do */ - iiDelay(pB, 50); // Pause between resets - outb(0, pB->i2eBase + FIFO_RESET); /* Second reset */ - - // We must wait before even attempting to read anything from the FIFO: the - // board's P.O.S.T may actually attempt to read and write its end of the - // FIFO in order to check flags, loop back (where supported), etc. On - // completion of this testing it would reset the FIFO, and on completion - // of all // P.O.S.T., write the message. We must not mistake data which - // might have been sent for testing as part of the reset message. To - // better utilize time, say, when resetting several boards, we allow the - // delay to be performed externally; in this way the caller can reset - // several boards, delay a single time, then call the initialization - // routine for all. - - pB->i2eState = II_STATE_RESET; - - iiDelayed = 0; // i.e., the delay routine hasn't been called since the most - // recent reset. - - // Ensure anything which would have been of use to standard loadware is - // blanked out, since board has now forgotten everything!. - - pB->i2eUsingIrq = I2_IRQ_UNDEFINED; /* to not use an interrupt so far */ - pB->i2eWaitingForEmptyFifo = 0; - pB->i2eOutMailWaiting = 0; - pB->i2eChannelPtr = NULL; - pB->i2eChannelCnt = 0; - - pB->i2eLeadoffWord[0] = 0; - pB->i2eFifoInInts = 0; - pB->i2eFifoOutInts = 0; - pB->i2eFatalTrap = NULL; - pB->i2eFatal = 0; - - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: iiResetDelay(pB) -// Parameters: pB - pointer to the board structure -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Using the delay defined in board structure, waits two seconds (for board to -// reset). -// -//****************************************************************************** -static int -iiResetDelay(i2eBordStrPtr pB) -{ - if (pB->i2eValid != I2E_MAGIC) { - I2_COMPLETE(pB, I2EE_BADMAGIC); - } - if (pB->i2eState != II_STATE_RESET) { - I2_COMPLETE(pB, I2EE_BADSTATE); - } - iiDelay(pB,2000); /* Now we wait for two seconds. */ - iiDelayed = 1; /* Delay has been called: ok to initialize */ - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: iiInitialize(pB) -// Parameters: pB - pointer to the board structure -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Attempts to read the Power-on reset message. Initializes any remaining fields -// in the pB structure. -// -// This should be called as the third step of a process beginning with -// iiReset(), then iiResetDelay(). This routine checks to see that the structure -// is "valid" and in the reset state, also confirms that the delay routine has -// been called since the latest reset (to any board! overly strong!). -// -//****************************************************************************** -static int -iiInitialize(i2eBordStrPtr pB) -{ - int itemp; - unsigned char c; - unsigned short utemp; - unsigned int ilimit; - - if (pB->i2eValid != I2E_MAGIC) - { - I2_COMPLETE(pB, I2EE_BADMAGIC); - } - - if (pB->i2eState != II_STATE_RESET || !iiDelayed) - { - I2_COMPLETE(pB, I2EE_BADSTATE); - } - - // In case there is a failure short of our completely reading the power-up - // message. - pB->i2eValid = I2E_INCOMPLETE; - - - // Now attempt to read the message. - - for (itemp = 0; itemp < sizeof(porStr); itemp++) - { - // We expect the entire message is ready. - if (!I2_HAS_INPUT(pB)) { - pB->i2ePomSize = itemp; - I2_COMPLETE(pB, I2EE_PORM_SHORT); - } - - pB->i2ePom.c[itemp] = c = inb(pB->i2eData); - - // We check the magic numbers as soon as they are supposed to be read - // (rather than after) to minimize effect of reading something we - // already suspect can't be "us". - if ( (itemp == POR_1_INDEX && c != POR_MAGIC_1) || - (itemp == POR_2_INDEX && c != POR_MAGIC_2)) - { - pB->i2ePomSize = itemp+1; - I2_COMPLETE(pB, I2EE_BADMAGIC); - } - } - - pB->i2ePomSize = itemp; - - // Ensure that this was all the data... - if (I2_HAS_INPUT(pB)) - I2_COMPLETE(pB, I2EE_PORM_LONG); - - // For now, we'll fail to initialize if P.O.S.T reports bad chip mapper: - // Implying we will not be able to download any code either: That's ok: the - // condition is pretty explicit. - if (pB->i2ePom.e.porDiag1 & POR_BAD_MAPPER) - { - I2_COMPLETE(pB, I2EE_POSTERR); - } - - // Determine anything which must be done differently depending on the family - // of boards! - switch (pB->i2ePom.e.porID & POR_ID_FAMILY) - { - case POR_ID_FII: // IntelliPort-II - - pB->i2eFifoStyle = FIFO_II; - pB->i2eFifoSize = 512; // 512 bytes, always - pB->i2eDataWidth16 = false; - - pB->i2eMaxIrq = 15; // Because board cannot tell us it is in an 8-bit - // slot, we do allow it to be done (documentation!) - - pB->i2eGoodMap[1] = - pB->i2eGoodMap[2] = - pB->i2eGoodMap[3] = - pB->i2eChannelMap[1] = - pB->i2eChannelMap[2] = - pB->i2eChannelMap[3] = 0; - - switch (pB->i2ePom.e.porID & POR_ID_SIZE) - { - case POR_ID_II_4: - pB->i2eGoodMap[0] = - pB->i2eChannelMap[0] = 0x0f; // four-port - - // Since porPorts1 is based on the Hardware ID register, the numbers - // should always be consistent for IntelliPort-II. Ditto below... - if (pB->i2ePom.e.porPorts1 != 4) - { - I2_COMPLETE(pB, I2EE_INCONSIST); - } - break; - - case POR_ID_II_8: - case POR_ID_II_8R: - pB->i2eGoodMap[0] = - pB->i2eChannelMap[0] = 0xff; // Eight port - if (pB->i2ePom.e.porPorts1 != 8) - { - I2_COMPLETE(pB, I2EE_INCONSIST); - } - break; - - case POR_ID_II_6: - pB->i2eGoodMap[0] = - pB->i2eChannelMap[0] = 0x3f; // Six Port - if (pB->i2ePom.e.porPorts1 != 6) - { - I2_COMPLETE(pB, I2EE_INCONSIST); - } - break; - } - - // Fix up the "good channel list based on any errors reported. - if (pB->i2ePom.e.porDiag1 & POR_BAD_UART1) - { - pB->i2eGoodMap[0] &= ~0x0f; - } - - if (pB->i2ePom.e.porDiag1 & POR_BAD_UART2) - { - pB->i2eGoodMap[0] &= ~0xf0; - } - - break; // POR_ID_FII case - - case POR_ID_FIIEX: // IntelliPort-IIEX - - pB->i2eFifoStyle = FIFO_IIEX; - - itemp = pB->i2ePom.e.porFifoSize; - - // Implicit assumption that fifo would not grow beyond 32k, - // nor would ever be less than 256. - - if (itemp < 8 || itemp > 15) - { - I2_COMPLETE(pB, I2EE_INCONSIST); - } - pB->i2eFifoSize = (1 << itemp); - - // These are based on what P.O.S.T thinks should be there, based on - // box ID registers - ilimit = pB->i2ePom.e.porNumBoxes; - if (ilimit > ABS_MAX_BOXES) - { - ilimit = ABS_MAX_BOXES; - } - - // For as many boxes as EXIST, gives the type of box. - // Added 8/6/93: check for the ISA-4 (asic) which looks like an - // expandable but for whom "8 or 16?" is not the right question. - - utemp = pB->i2ePom.e.porFlags; - if (utemp & POR_CEX4) - { - pB->i2eChannelMap[0] = 0x000f; - } else { - utemp &= POR_BOXES; - for (itemp = 0; itemp < ilimit; itemp++) - { - pB->i2eChannelMap[itemp] = - ((utemp & POR_BOX_16) ? 0xffff : 0x00ff); - utemp >>= 1; - } - } - - // These are based on what P.O.S.T actually found. - - utemp = (pB->i2ePom.e.porPorts2 << 8) + pB->i2ePom.e.porPorts1; - - for (itemp = 0; itemp < ilimit; itemp++) - { - pB->i2eGoodMap[itemp] = 0; - if (utemp & 1) pB->i2eGoodMap[itemp] |= 0x000f; - if (utemp & 2) pB->i2eGoodMap[itemp] |= 0x00f0; - if (utemp & 4) pB->i2eGoodMap[itemp] |= 0x0f00; - if (utemp & 8) pB->i2eGoodMap[itemp] |= 0xf000; - utemp >>= 4; - } - - // Now determine whether we should transfer in 8 or 16-bit mode. - switch (pB->i2ePom.e.porBus & (POR_BUS_SLOT16 | POR_BUS_DIP16) ) - { - case POR_BUS_SLOT16 | POR_BUS_DIP16: - pB->i2eDataWidth16 = true; - pB->i2eMaxIrq = 15; - break; - - case POR_BUS_SLOT16: - pB->i2eDataWidth16 = false; - pB->i2eMaxIrq = 15; - break; - - case 0: - case POR_BUS_DIP16: // In an 8-bit slot, DIP switch don't care. - default: - pB->i2eDataWidth16 = false; - pB->i2eMaxIrq = 7; - break; - } - break; // POR_ID_FIIEX case - - default: // Unknown type of board - I2_COMPLETE(pB, I2EE_BAD_FAMILY); - break; - } // End the switch based on family - - // Temporarily, claim there is no room in the outbound fifo. - // We will maintain this whenever we check for an empty outbound FIFO. - pB->i2eFifoRemains = 0; - - // Now, based on the bus type, should we expect to be able to re-configure - // interrupts (say, for testing purposes). - switch (pB->i2ePom.e.porBus & POR_BUS_TYPE) - { - case POR_BUS_T_ISA: - case POR_BUS_T_UNK: // If the type of bus is undeclared, assume ok. - case POR_BUS_T_MCA: - case POR_BUS_T_EISA: - break; - default: - I2_COMPLETE(pB, I2EE_BADBUS); - } - - if (pB->i2eDataWidth16) - { - pB->i2eWriteBuf = iiWriteBuf16; - pB->i2eReadBuf = iiReadBuf16; - pB->i2eWriteWord = iiWriteWord16; - pB->i2eReadWord = iiReadWord16; - } else { - pB->i2eWriteBuf = iiWriteBuf8; - pB->i2eReadBuf = iiReadBuf8; - pB->i2eWriteWord = iiWriteWord8; - pB->i2eReadWord = iiReadWord8; - } - - switch(pB->i2eFifoStyle) - { - case FIFO_II: - pB->i2eWaitForTxEmpty = iiWaitForTxEmptyII; - pB->i2eTxMailEmpty = iiTxMailEmptyII; - pB->i2eTrySendMail = iiTrySendMailII; - pB->i2eGetMail = iiGetMailII; - pB->i2eEnableMailIrq = iiEnableMailIrqII; - pB->i2eWriteMask = iiWriteMaskII; - - break; - - case FIFO_IIEX: - pB->i2eWaitForTxEmpty = iiWaitForTxEmptyIIEX; - pB->i2eTxMailEmpty = iiTxMailEmptyIIEX; - pB->i2eTrySendMail = iiTrySendMailIIEX; - pB->i2eGetMail = iiGetMailIIEX; - pB->i2eEnableMailIrq = iiEnableMailIrqIIEX; - pB->i2eWriteMask = iiWriteMaskIIEX; - - break; - - default: - I2_COMPLETE(pB, I2EE_INCONSIST); - } - - // Initialize state information. - pB->i2eState = II_STATE_READY; // Ready to load loadware. - - // Some Final cleanup: - // For some boards, the bootstrap firmware may perform some sort of test - // resulting in a stray character pending in the incoming mailbox. If one is - // there, it should be read and discarded, especially since for the standard - // firmware, it's the mailbox that interrupts the host. - - pB->i2eStartMail = iiGetMail(pB); - - // Throw it away and clear the mailbox structure element - pB->i2eStartMail = NO_MAIL_HERE; - - // Everything is ok now, return with good status/ - - pB->i2eValid = I2E_MAGIC; - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: ii2DelayTimer(mseconds) -// Parameters: mseconds - number of milliseconds to delay -// -// Returns: Nothing -// -// Description: -// -// This routine delays for approximately mseconds milliseconds and is intended -// to be called indirectly through i2Delay field in i2eBordStr. It uses the -// Linux timer_list mechanism. -// -// The Linux timers use a unit called "jiffies" which are 10mS in the Intel -// architecture. This function rounds the delay period up to the next "jiffy". -// In the Alpha architecture the "jiffy" is 1mS, but this driver is not intended -// for Alpha platforms at this time. -// -//****************************************************************************** -static void -ii2DelayTimer(unsigned int mseconds) -{ - msleep_interruptible(mseconds); -} - -#if 0 -//static void ii2DelayIO(unsigned int); -//****************************************************************************** -// !!! Not Used, this is DOS crap, some of you young folks may be interested in -// in how things were done in the stone age of caculating machines !!! -// Function: ii2DelayIO(mseconds) -// Parameters: mseconds - number of milliseconds to delay -// -// Returns: Nothing -// -// Description: -// -// This routine delays for approximately mseconds milliseconds and is intended -// to be called indirectly through i2Delay field in i2eBordStr. It is intended -// for use where a clock-based function is impossible: for example, DOS drivers. -// -// This function uses the IN instruction to place bounds on the timing and -// assumes that ii2Safe has been set. This is because I/O instructions are not -// subject to caching and will therefore take a certain minimum time. To ensure -// the delay is at least long enough on fast machines, it is based on some -// fastest-case calculations. On slower machines this may cause VERY long -// delays. (3 x fastest case). In the fastest case, everything is cached except -// the I/O instruction itself. -// -// Timing calculations: -// The fastest bus speed for I/O operations is likely to be 10 MHz. The I/O -// operation in question is a byte operation to an odd address. For 8-bit -// operations, the architecture generally enforces two wait states. At 10 MHz, a -// single cycle time is 100nS. A read operation at two wait states takes 6 -// cycles for a total time of 600nS. Therefore approximately 1666 iterations -// would be required to generate a single millisecond delay. The worst -// (reasonable) case would be an 8MHz system with no cacheing. In this case, the -// I/O instruction would take 125nS x 6 cyles = 750 nS. More importantly, code -// fetch of other instructions in the loop would take time (zero wait states, -// however) and would be hard to estimate. This is minimized by using in-line -// assembler for the in inner loop of IN instructions. This consists of just a -// few bytes. So we'll guess about four code fetches per loop. Each code fetch -// should take four cycles, so we have 125nS * 8 = 1000nS. Worst case then is -// that what should have taken 1 mS takes instead 1666 * (1750) = 2.9 mS. -// -// So much for theoretical timings: results using 1666 value on some actual -// machines: -// IBM 286 6MHz 3.15 mS -// Zenith 386 33MHz 2.45 mS -// (brandX) 386 33MHz 1.90 mS (has cache) -// (brandY) 486 33MHz 2.35 mS -// NCR 486 ?? 1.65 mS (microchannel) -// -// For most machines, it is probably safe to scale this number back (remember, -// for robust operation use an actual timed delay if possible), so we are using -// a value of 1190. This yields 1.17 mS for the fastest machine in our sample, -// 1.75 mS for typical 386 machines, and 2.25 mS the absolute slowest machine. -// -// 1/29/93: -// The above timings are too slow. Actual cycle times might be faster. ISA cycle -// times could approach 500 nS, and ... -// The IBM model 77 being microchannel has no wait states for 8-bit reads and -// seems to be accessing the I/O at 440 nS per access (from start of one to -// start of next). This would imply we need 1000/.440 = 2272 iterations to -// guarantee we are fast enough. In actual testing, we see that 2 * 1190 are in -// fact enough. For diagnostics, we keep the level at 1190, but developers note -// this needs tuning. -// -// Safe assumption: 2270 i/o reads = 1 millisecond -// -//****************************************************************************** - - -static int ii2DelValue = 1190; // See timing calculations below - // 1666 for fastest theoretical machine - // 1190 safe for most fast 386 machines - // 1000 for fastest machine tested here - // 540 (sic) for AT286/6Mhz -static void -ii2DelayIO(unsigned int mseconds) -{ - if (!ii2Safe) - return; /* Do nothing if this variable uninitialized */ - - while(mseconds--) { - int i = ii2DelValue; - while ( i-- ) { - inb(ii2Safe); - } - } -} -#endif - -//****************************************************************************** -// Function: ii2Nop() -// Parameters: None -// -// Returns: Nothing -// -// Description: -// -// iiInitialize will set i2eDelay to this if the delay parameter is NULL. This -// saves checking for a NULL pointer at every call. -//****************************************************************************** -static void -ii2Nop(void) -{ - return; // no mystery here -} - -//======================================================= -// Routines which are available in 8/16-bit versions, or -// in different fifo styles. These are ALL called -// indirectly through the board structure. -//======================================================= - -//****************************************************************************** -// Function: iiWriteBuf16(pB, address, count) -// Parameters: pB - pointer to board structure -// address - address of data to write -// count - number of data bytes to write -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Writes 'count' bytes from 'address' to the data fifo specified by the board -// structure pointer pB. Should count happen to be odd, an extra pad byte is -// sent (identity unknown...). Uses 16-bit (word) operations. Is called -// indirectly through pB->i2eWriteBuf. -// -//****************************************************************************** -static int -iiWriteBuf16(i2eBordStrPtr pB, unsigned char *address, int count) -{ - // Rudimentary sanity checking here. - if (pB->i2eValid != I2E_MAGIC) - I2_COMPLETE(pB, I2EE_INVALID); - - I2_OUTSW(pB->i2eData, address, count); - - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: iiWriteBuf8(pB, address, count) -// Parameters: pB - pointer to board structure -// address - address of data to write -// count - number of data bytes to write -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Writes 'count' bytes from 'address' to the data fifo specified by the board -// structure pointer pB. Should count happen to be odd, an extra pad byte is -// sent (identity unknown...). This is to be consistent with the 16-bit version. -// Uses 8-bit (byte) operations. Is called indirectly through pB->i2eWriteBuf. -// -//****************************************************************************** -static int -iiWriteBuf8(i2eBordStrPtr pB, unsigned char *address, int count) -{ - /* Rudimentary sanity checking here */ - if (pB->i2eValid != I2E_MAGIC) - I2_COMPLETE(pB, I2EE_INVALID); - - I2_OUTSB(pB->i2eData, address, count); - - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: iiReadBuf16(pB, address, count) -// Parameters: pB - pointer to board structure -// address - address to put data read -// count - number of data bytes to read -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Reads 'count' bytes into 'address' from the data fifo specified by the board -// structure pointer pB. Should count happen to be odd, an extra pad byte is -// received (identity unknown...). Uses 16-bit (word) operations. Is called -// indirectly through pB->i2eReadBuf. -// -//****************************************************************************** -static int -iiReadBuf16(i2eBordStrPtr pB, unsigned char *address, int count) -{ - // Rudimentary sanity checking here. - if (pB->i2eValid != I2E_MAGIC) - I2_COMPLETE(pB, I2EE_INVALID); - - I2_INSW(pB->i2eData, address, count); - - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: iiReadBuf8(pB, address, count) -// Parameters: pB - pointer to board structure -// address - address to put data read -// count - number of data bytes to read -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Reads 'count' bytes into 'address' from the data fifo specified by the board -// structure pointer pB. Should count happen to be odd, an extra pad byte is -// received (identity unknown...). This to match the 16-bit behaviour. Uses -// 8-bit (byte) operations. Is called indirectly through pB->i2eReadBuf. -// -//****************************************************************************** -static int -iiReadBuf8(i2eBordStrPtr pB, unsigned char *address, int count) -{ - // Rudimentary sanity checking here. - if (pB->i2eValid != I2E_MAGIC) - I2_COMPLETE(pB, I2EE_INVALID); - - I2_INSB(pB->i2eData, address, count); - - I2_COMPLETE(pB, I2EE_GOOD); -} - -//****************************************************************************** -// Function: iiReadWord16(pB) -// Parameters: pB - pointer to board structure -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Returns the word read from the data fifo specified by the board-structure -// pointer pB. Uses a 16-bit operation. Is called indirectly through -// pB->i2eReadWord. -// -//****************************************************************************** -static unsigned short -iiReadWord16(i2eBordStrPtr pB) -{ - return inw(pB->i2eData); -} - -//****************************************************************************** -// Function: iiReadWord8(pB) -// Parameters: pB - pointer to board structure -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Returns the word read from the data fifo specified by the board-structure -// pointer pB. Uses two 8-bit operations. Bytes are assumed to be LSB first. Is -// called indirectly through pB->i2eReadWord. -// -//****************************************************************************** -static unsigned short -iiReadWord8(i2eBordStrPtr pB) -{ - unsigned short urs; - - urs = inb(pB->i2eData); - - return (inb(pB->i2eData) << 8) | urs; -} - -//****************************************************************************** -// Function: iiWriteWord16(pB, value) -// Parameters: pB - pointer to board structure -// value - data to write -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Writes the word 'value' to the data fifo specified by the board-structure -// pointer pB. Uses 16-bit operation. Is called indirectly through -// pB->i2eWriteWord. -// -//****************************************************************************** -static void -iiWriteWord16(i2eBordStrPtr pB, unsigned short value) -{ - outw((int)value, pB->i2eData); -} - -//****************************************************************************** -// Function: iiWriteWord8(pB, value) -// Parameters: pB - pointer to board structure -// value - data to write -// -// Returns: True if everything appears copacetic. -// False if there is any error: the pB->i2eError field has the error -// -// Description: -// -// Writes the word 'value' to the data fifo specified by the board-structure -// pointer pB. Uses two 8-bit operations (writes LSB first). Is called -// indirectly through pB->i2eWriteWord. -// -//****************************************************************************** -static void -iiWriteWord8(i2eBordStrPtr pB, unsigned short value) -{ - outb((char)value, pB->i2eData); - outb((char)(value >> 8), pB->i2eData); -} - -//****************************************************************************** -// Function: iiWaitForTxEmptyII(pB, mSdelay) -// Parameters: pB - pointer to board structure -// mSdelay - period to wait before returning -// -// Returns: True if the FIFO is empty. -// False if it not empty in the required time: the pB->i2eError -// field has the error. -// -// Description: -// -// Waits up to "mSdelay" milliseconds for the outgoing FIFO to become empty; if -// not empty by the required time, returns false and error in pB->i2eError, -// otherwise returns true. -// -// mSdelay == 0 is taken to mean must be empty on the first test. -// -// This version operates on IntelliPort-II - style FIFO's -// -// Note this routine is organized so that if status is ok there is no delay at -// all called either before or after the test. Is called indirectly through -// pB->i2eWaitForTxEmpty. -// -//****************************************************************************** -static int -iiWaitForTxEmptyII(i2eBordStrPtr pB, int mSdelay) -{ - unsigned long flags; - int itemp; - - for (;;) - { - // This routine hinges on being able to see the "other" status register - // (as seen by the local processor). His incoming fifo is our outgoing - // FIFO. - // - // By the nature of this routine, you would be using this as part of a - // larger atomic context: i.e., you would use this routine to ensure the - // fifo empty, then act on this information. Between these two halves, - // you will generally not want to service interrupts or in any way - // disrupt the assumptions implicit in the larger context. - // - // Even worse, however, this routine "shifts" the status register to - // point to the local status register which is not the usual situation. - // Therefore for extra safety, we force the critical section to be - // completely atomic, and pick up after ourselves before allowing any - // interrupts of any kind. - - - write_lock_irqsave(&Dl_spinlock, flags); - outb(SEL_COMMAND, pB->i2ePointer); - outb(SEL_CMD_SH, pB->i2ePointer); - - itemp = inb(pB->i2eStatus); - - outb(SEL_COMMAND, pB->i2ePointer); - outb(SEL_CMD_UNSH, pB->i2ePointer); - - if (itemp & ST_IN_EMPTY) - { - I2_UPDATE_FIFO_ROOM(pB); - write_unlock_irqrestore(&Dl_spinlock, flags); - I2_COMPLETE(pB, I2EE_GOOD); - } - - write_unlock_irqrestore(&Dl_spinlock, flags); - - if (mSdelay-- == 0) - break; - - iiDelay(pB, 1); /* 1 mS granularity on checking condition */ - } - I2_COMPLETE(pB, I2EE_TXE_TIME); -} - -//****************************************************************************** -// Function: iiWaitForTxEmptyIIEX(pB, mSdelay) -// Parameters: pB - pointer to board structure -// mSdelay - period to wait before returning -// -// Returns: True if the FIFO is empty. -// False if it not empty in the required time: the pB->i2eError -// field has the error. -// -// Description: -// -// Waits up to "mSdelay" milliseconds for the outgoing FIFO to become empty; if -// not empty by the required time, returns false and error in pB->i2eError, -// otherwise returns true. -// -// mSdelay == 0 is taken to mean must be empty on the first test. -// -// This version operates on IntelliPort-IIEX - style FIFO's -// -// Note this routine is organized so that if status is ok there is no delay at -// all called either before or after the test. Is called indirectly through -// pB->i2eWaitForTxEmpty. -// -//****************************************************************************** -static int -iiWaitForTxEmptyIIEX(i2eBordStrPtr pB, int mSdelay) -{ - unsigned long flags; - - for (;;) - { - // By the nature of this routine, you would be using this as part of a - // larger atomic context: i.e., you would use this routine to ensure the - // fifo empty, then act on this information. Between these two halves, - // you will generally not want to service interrupts or in any way - // disrupt the assumptions implicit in the larger context. - - write_lock_irqsave(&Dl_spinlock, flags); - - if (inb(pB->i2eStatus) & STE_OUT_MT) { - I2_UPDATE_FIFO_ROOM(pB); - write_unlock_irqrestore(&Dl_spinlock, flags); - I2_COMPLETE(pB, I2EE_GOOD); - } - write_unlock_irqrestore(&Dl_spinlock, flags); - - if (mSdelay-- == 0) - break; - - iiDelay(pB, 1); // 1 mS granularity on checking condition - } - I2_COMPLETE(pB, I2EE_TXE_TIME); -} - -//****************************************************************************** -// Function: iiTxMailEmptyII(pB) -// Parameters: pB - pointer to board structure -// -// Returns: True if the transmit mailbox is empty. -// False if it not empty. -// -// Description: -// -// Returns true or false according to whether the transmit mailbox is empty (and -// therefore able to accept more mail) -// -// This version operates on IntelliPort-II - style FIFO's -// -//****************************************************************************** -static int -iiTxMailEmptyII(i2eBordStrPtr pB) -{ - int port = pB->i2ePointer; - outb(SEL_OUTMAIL, port); - return inb(port) == 0; -} - -//****************************************************************************** -// Function: iiTxMailEmptyIIEX(pB) -// Parameters: pB - pointer to board structure -// -// Returns: True if the transmit mailbox is empty. -// False if it not empty. -// -// Description: -// -// Returns true or false according to whether the transmit mailbox is empty (and -// therefore able to accept more mail) -// -// This version operates on IntelliPort-IIEX - style FIFO's -// -//****************************************************************************** -static int -iiTxMailEmptyIIEX(i2eBordStrPtr pB) -{ - return !(inb(pB->i2eStatus) & STE_OUT_MAIL); -} - -//****************************************************************************** -// Function: iiTrySendMailII(pB,mail) -// Parameters: pB - pointer to board structure -// mail - value to write to mailbox -// -// Returns: True if the transmit mailbox is empty, and mail is sent. -// False if it not empty. -// -// Description: -// -// If outgoing mailbox is empty, sends mail and returns true. If outgoing -// mailbox is not empty, returns false. -// -// This version operates on IntelliPort-II - style FIFO's -// -//****************************************************************************** -static int -iiTrySendMailII(i2eBordStrPtr pB, unsigned char mail) -{ - int port = pB->i2ePointer; - - outb(SEL_OUTMAIL, port); - if (inb(port) == 0) { - outb(SEL_OUTMAIL, port); - outb(mail, port); - return 1; - } - return 0; -} - -//****************************************************************************** -// Function: iiTrySendMailIIEX(pB,mail) -// Parameters: pB - pointer to board structure -// mail - value to write to mailbox -// -// Returns: True if the transmit mailbox is empty, and mail is sent. -// False if it not empty. -// -// Description: -// -// If outgoing mailbox is empty, sends mail and returns true. If outgoing -// mailbox is not empty, returns false. -// -// This version operates on IntelliPort-IIEX - style FIFO's -// -//****************************************************************************** -static int -iiTrySendMailIIEX(i2eBordStrPtr pB, unsigned char mail) -{ - if (inb(pB->i2eStatus) & STE_OUT_MAIL) - return 0; - outb(mail, pB->i2eXMail); - return 1; -} - -//****************************************************************************** -// Function: iiGetMailII(pB,mail) -// Parameters: pB - pointer to board structure -// -// Returns: Mailbox data or NO_MAIL_HERE. -// -// Description: -// -// If no mail available, returns NO_MAIL_HERE otherwise returns the data from -// the mailbox, which is guaranteed != NO_MAIL_HERE. -// -// This version operates on IntelliPort-II - style FIFO's -// -//****************************************************************************** -static unsigned short -iiGetMailII(i2eBordStrPtr pB) -{ - if (I2_HAS_MAIL(pB)) { - outb(SEL_INMAIL, pB->i2ePointer); - return inb(pB->i2ePointer); - } else { - return NO_MAIL_HERE; - } -} - -//****************************************************************************** -// Function: iiGetMailIIEX(pB,mail) -// Parameters: pB - pointer to board structure -// -// Returns: Mailbox data or NO_MAIL_HERE. -// -// Description: -// -// If no mail available, returns NO_MAIL_HERE otherwise returns the data from -// the mailbox, which is guaranteed != NO_MAIL_HERE. -// -// This version operates on IntelliPort-IIEX - style FIFO's -// -//****************************************************************************** -static unsigned short -iiGetMailIIEX(i2eBordStrPtr pB) -{ - if (I2_HAS_MAIL(pB)) - return inb(pB->i2eXMail); - else - return NO_MAIL_HERE; -} - -//****************************************************************************** -// Function: iiEnableMailIrqII(pB) -// Parameters: pB - pointer to board structure -// -// Returns: Nothing -// -// Description: -// -// Enables board to interrupt host (only) by writing to host's in-bound mailbox. -// -// This version operates on IntelliPort-II - style FIFO's -// -//****************************************************************************** -static void -iiEnableMailIrqII(i2eBordStrPtr pB) -{ - outb(SEL_MASK, pB->i2ePointer); - outb(ST_IN_MAIL, pB->i2ePointer); -} - -//****************************************************************************** -// Function: iiEnableMailIrqIIEX(pB) -// Parameters: pB - pointer to board structure -// -// Returns: Nothing -// -// Description: -// -// Enables board to interrupt host (only) by writing to host's in-bound mailbox. -// -// This version operates on IntelliPort-IIEX - style FIFO's -// -//****************************************************************************** -static void -iiEnableMailIrqIIEX(i2eBordStrPtr pB) -{ - outb(MX_IN_MAIL, pB->i2eXMask); -} - -//****************************************************************************** -// Function: iiWriteMaskII(pB) -// Parameters: pB - pointer to board structure -// -// Returns: Nothing -// -// Description: -// -// Writes arbitrary value to the mask register. -// -// This version operates on IntelliPort-II - style FIFO's -// -//****************************************************************************** -static void -iiWriteMaskII(i2eBordStrPtr pB, unsigned char value) -{ - outb(SEL_MASK, pB->i2ePointer); - outb(value, pB->i2ePointer); -} - -//****************************************************************************** -// Function: iiWriteMaskIIEX(pB) -// Parameters: pB - pointer to board structure -// -// Returns: Nothing -// -// Description: -// -// Writes arbitrary value to the mask register. -// -// This version operates on IntelliPort-IIEX - style FIFO's -// -//****************************************************************************** -static void -iiWriteMaskIIEX(i2eBordStrPtr pB, unsigned char value) -{ - outb(value, pB->i2eXMask); -} - -//****************************************************************************** -// Function: iiDownloadBlock(pB, pSource, isStandard) -// Parameters: pB - pointer to board structure -// pSource - loadware block to download -// isStandard - True if "standard" loadware, else false. -// -// Returns: Success or Failure -// -// Description: -// -// Downloads a single block (at pSource)to the board referenced by pB. Caller -// sets isStandard to true/false according to whether the "standard" loadware is -// what's being loaded. The normal process, then, is to perform an iiInitialize -// to the board, then perform some number of iiDownloadBlocks using the returned -// state to determine when download is complete. -// -// Possible return values: (see I2ELLIS.H) -// II_DOWN_BADVALID -// II_DOWN_BADFILE -// II_DOWN_CONTINUING -// II_DOWN_GOOD -// II_DOWN_BAD -// II_DOWN_BADSTATE -// II_DOWN_TIMEOUT -// -// Uses the i2eState and i2eToLoad fields (initialized at iiInitialize) to -// determine whether this is the first block, whether to check for magic -// numbers, how many blocks there are to go... -// -//****************************************************************************** -static int -iiDownloadBlock ( i2eBordStrPtr pB, loadHdrStrPtr pSource, int isStandard) -{ - int itemp; - int loadedFirst; - - if (pB->i2eValid != I2E_MAGIC) return II_DOWN_BADVALID; - - switch(pB->i2eState) - { - case II_STATE_READY: - - // Loading the first block after reset. Must check the magic number of the - // loadfile, store the number of blocks we expect to load. - if (pSource->e.loadMagic != MAGIC_LOADFILE) - { - return II_DOWN_BADFILE; - } - - // Next we store the total number of blocks to load, including this one. - pB->i2eToLoad = 1 + pSource->e.loadBlocksMore; - - // Set the state, store the version numbers. ('Cause this may have come - // from a file - we might want to report these versions and revisions in - // case of an error! - pB->i2eState = II_STATE_LOADING; - pB->i2eLVersion = pSource->e.loadVersion; - pB->i2eLRevision = pSource->e.loadRevision; - pB->i2eLSub = pSource->e.loadSubRevision; - - // The time and date of compilation is also available but don't bother - // storing it for normal purposes. - loadedFirst = 1; - break; - - case II_STATE_LOADING: - loadedFirst = 0; - break; - - default: - return II_DOWN_BADSTATE; - } - - // Now we must be in the II_STATE_LOADING state, and we assume i2eToLoad - // must be positive still, because otherwise we would have cleaned up last - // time and set the state to II_STATE_LOADED. - if (!iiWaitForTxEmpty(pB, MAX_DLOAD_READ_TIME)) { - return II_DOWN_TIMEOUT; - } - - if (!iiWriteBuf(pB, pSource->c, LOADWARE_BLOCK_SIZE)) { - return II_DOWN_BADVALID; - } - - // If we just loaded the first block, wait for the fifo to empty an extra - // long time to allow for any special startup code in the firmware, like - // sending status messages to the LCD's. - - if (loadedFirst) { - if (!iiWaitForTxEmpty(pB, MAX_DLOAD_START_TIME)) { - return II_DOWN_TIMEOUT; - } - } - - // Determine whether this was our last block! - if (--(pB->i2eToLoad)) { - return II_DOWN_CONTINUING; // more to come... - } - - // It WAS our last block: Clean up operations... - // ...Wait for last buffer to drain from the board... - if (!iiWaitForTxEmpty(pB, MAX_DLOAD_READ_TIME)) { - return II_DOWN_TIMEOUT; - } - // If there were only a single block written, this would come back - // immediately and be harmless, though not strictly necessary. - itemp = MAX_DLOAD_ACK_TIME/10; - while (--itemp) { - if (I2_HAS_INPUT(pB)) { - switch (inb(pB->i2eData)) { - case LOADWARE_OK: - pB->i2eState = - isStandard ? II_STATE_STDLOADED :II_STATE_LOADED; - - // Some revisions of the bootstrap firmware (e.g. ISA-8 1.0.2) - // will, // if there is a debug port attached, require some - // time to send information to the debug port now. It will do - // this before // executing any of the code we just downloaded. - // It may take up to 700 milliseconds. - if (pB->i2ePom.e.porDiag2 & POR_DEBUG_PORT) { - iiDelay(pB, 700); - } - - return II_DOWN_GOOD; - - case LOADWARE_BAD: - default: - return II_DOWN_BAD; - } - } - - iiDelay(pB, 10); // 10 mS granularity on checking condition - } - - // Drop-through --> timed out waiting for firmware confirmation - - pB->i2eState = II_STATE_BADLOAD; - return II_DOWN_TIMEOUT; -} - -//****************************************************************************** -// Function: iiDownloadAll(pB, pSource, isStandard, size) -// Parameters: pB - pointer to board structure -// pSource - loadware block to download -// isStandard - True if "standard" loadware, else false. -// size - size of data to download (in bytes) -// -// Returns: Success or Failure -// -// Description: -// -// Given a pointer to a board structure, a pointer to the beginning of some -// loadware, whether it is considered the "standard loadware", and the size of -// the array in bytes loads the entire array to the board as loadware. -// -// Assumes the board has been freshly reset and the power-up reset message read. -// (i.e., in II_STATE_READY). Complains if state is bad, or if there seems to be -// too much or too little data to load, or if iiDownloadBlock complains. -//****************************************************************************** -static int -iiDownloadAll(i2eBordStrPtr pB, loadHdrStrPtr pSource, int isStandard, int size) -{ - int status; - - // We know (from context) board should be ready for the first block of - // download. Complain if not. - if (pB->i2eState != II_STATE_READY) return II_DOWN_BADSTATE; - - while (size > 0) { - size -= LOADWARE_BLOCK_SIZE; // How much data should there be left to - // load after the following operation ? - - // Note we just bump pSource by "one", because its size is actually that - // of an entire block, same as LOADWARE_BLOCK_SIZE. - status = iiDownloadBlock(pB, pSource++, isStandard); - - switch(status) - { - case II_DOWN_GOOD: - return ( (size > 0) ? II_DOWN_OVER : II_DOWN_GOOD); - - case II_DOWN_CONTINUING: - break; - - default: - return status; - } - } - - // We shouldn't drop out: it means "while" caught us with nothing left to - // download, yet the previous DownloadBlock did not return complete. Ergo, - // not enough data to match the size byte in the header. - return II_DOWN_UNDER; -} diff --git a/drivers/char/ip2/i2ellis.h b/drivers/char/ip2/i2ellis.h deleted file mode 100644 index fb6df2456018..000000000000 --- a/drivers/char/ip2/i2ellis.h +++ /dev/null @@ -1,566 +0,0 @@ -/******************************************************************************* -* -* (c) 1999 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Mainline code for the device driver -* -*******************************************************************************/ -//------------------------------------------------------------------------------ -// i2ellis.h -// -// IntelliPort-II and IntelliPort-IIEX -// -// Extremely -// Low -// Level -// Interface -// Services -// -// Structure Definitions and declarations for "ELLIS" service routines found in -// i2ellis.c -// -// These routines are based on properties of the IntelliPort-II and -IIEX -// hardware and bootstrap firmware, and are not sensitive to particular -// conventions of any particular loadware. -// -// Unlike i2hw.h, which provides IRONCLAD hardware definitions, the material -// here and in i2ellis.c is intended to provice a useful, but not required, -// layer of insulation from the hardware specifics. -//------------------------------------------------------------------------------ -#ifndef I2ELLIS_H /* To prevent multiple includes */ -#define I2ELLIS_H 1 -//------------------------------------------------ -// Revision History: -// -// 30 September 1991 MAG First Draft Started -// 12 October 1991 ...continued... -// -// 20 December 1996 AKM Linux version -//------------------------------------------------- - -//---------------------- -// Mandatory Includes: -//---------------------- -#include "ip2types.h" -#include "i2hw.h" // The hardware definitions - -//------------------------------------------ -// STAT_BOXIDS packets -//------------------------------------------ -#define MAX_BOX 4 - -typedef struct _bidStat -{ - unsigned char bid_value[MAX_BOX]; -} bidStat, *bidStatPtr; - -// This packet is sent in response to a CMD_GET_BOXIDS bypass command. For -IIEX -// boards, reports the hardware-specific "asynchronous resource register" on -// each expansion box. Boxes not present report 0xff. For -II boards, the first -// element contains 0x80 for 8-port, 0x40 for 4-port boards. - -// Box IDs aka ARR or Async Resource Register (more than you want to know) -// 7 6 5 4 3 2 1 0 -// F F N N L S S S -// ============================= -// F F - Product Family Designator -// =====+++++++++++++++++++++++++++++++ -// 0 0 - Intelliport II EX / ISA-8 -// 1 0 - IntelliServer -// 0 1 - SAC - Port Device (Intelliport III ??? ) -// =====+++++++++++++++++++++++++++++++++++++++ -// N N - Number of Ports -// 0 0 - 8 (eight) -// 0 1 - 4 (four) -// 1 0 - 12 (twelve) -// 1 1 - 16 (sixteen) -// =++++++++++++++++++++++++++++++++++ -// L - LCD Display Module Present -// 0 - No -// 1 - LCD module present -// =========+++++++++++++++++++++++++++++++++++++ -// S S S - Async Signals Supported Designator -// 0 0 0 - 8dss, Mod DCE DB25 Female -// 0 0 1 - 6dss, RJ-45 -// 0 1 0 - RS-232/422 dss, DB25 Female -// 0 1 1 - RS-232/422 dss, separate 232/422 DB25 Female -// 1 0 0 - 6dss, 921.6 I/F with ST654's -// 1 0 1 - RS-423/232 8dss, RJ-45 10Pin -// 1 1 0 - 6dss, Mod DCE DB25 Female -// 1 1 1 - NO BOX PRESENT - -#define FF(c) ((c & 0xC0) >> 6) -#define NN(c) ((c & 0x30) >> 4) -#define L(c) ((c & 0x08) >> 3) -#define SSS(c) (c & 0x07) - -#define BID_HAS_654(x) (SSS(x) == 0x04) -#define BID_NO_BOX 0xff /* no box */ -#define BID_8PORT 0x80 /* IP2-8 port */ -#define BID_4PORT 0x81 /* IP2-4 port */ -#define BID_EXP_MASK 0x30 /* IP2-EX */ -#define BID_EXP_8PORT 0x00 /* 8, */ -#define BID_EXP_4PORT 0x10 /* 4, */ -#define BID_EXP_UNDEF 0x20 /* UNDEF, */ -#define BID_EXP_16PORT 0x30 /* 16, */ -#define BID_LCD_CTRL 0x08 /* LCD Controller */ -#define BID_LCD_NONE 0x00 /* - no controller present */ -#define BID_LCD_PRES 0x08 /* - controller present */ -#define BID_CON_MASK 0x07 /* - connector pinouts */ -#define BID_CON_DB25 0x00 /* - DB-25 F */ -#define BID_CON_RJ45 0x01 /* - rj45 */ - -//------------------------------------------------------------------------------ -// i2eBordStr -// -// This structure contains all the information the ELLIS routines require in -// dealing with a particular board. -//------------------------------------------------------------------------------ -// There are some queues here which are guaranteed to never contain the entry -// for a single channel twice. So they must be slightly larger to allow -// unambiguous full/empty management -// -#define CH_QUEUE_SIZE ABS_MOST_PORTS+2 - -typedef struct _i2eBordStr -{ - porStr i2ePom; // Structure containing the power-on message. - - unsigned short i2ePomSize; - // The number of bytes actually read if - // different from sizeof i2ePom, indicates - // there is an error! - - unsigned short i2eStartMail; - // Contains whatever inbound mailbox data - // present at startup. NO_MAIL_HERE indicates - // nothing was present. No special - // significance as of this writing, but may be - // useful for diagnostic reasons. - - unsigned short i2eValid; - // Indicates validity of the structure; if - // i2eValid == I2E_MAGIC, then we can trust - // the other fields. Some (especially - // initialization) functions are good about - // checking for validity. Many functions do - // not, it being assumed that the larger - // context assures we are using a valid - // i2eBordStrPtr. - - unsigned short i2eError; - // Used for returning an error condition from - // several functions which use i2eBordStrPtr - // as an argument. - - // Accelerators to characterize separate features of a board, derived from a - // number of sources. - - unsigned short i2eFifoSize; - // Always, the size of the FIFO. For - // IntelliPort-II, always the same, for -IIEX - // taken from the Power-On reset message. - - volatile - unsigned short i2eFifoRemains; - // Used during normal operation to indicate a - // lower bound on the amount of data which - // might be in the outbound fifo. - - unsigned char i2eFifoStyle; - // Accelerator which tells which style (-II or - // -IIEX) FIFO we are using. - - unsigned char i2eDataWidth16; - // Accelerator which tells whether we should - // do 8 or 16-bit data transfers. - - unsigned char i2eMaxIrq; - // The highest allowable IRQ, based on the - // slot size. - - // Accelerators for various addresses on the board - int i2eBase; // I/O Address of the Board - int i2eData; // From here data transfers happen - int i2eStatus; // From here status reads happen - int i2ePointer; // (IntelliPort-II: pointer/commands) - int i2eXMail; // (IntelliPOrt-IIEX: mailboxes - int i2eXMask; // (IntelliPort-IIEX: mask write - - //------------------------------------------------------- - // Information presented in a common format across boards - // For each box, bit map of the channels present. Box closest to - // the host is box 0. LSB is channel 0. IntelliPort-II (non-expandable) - // is taken to be box 0. These are derived from product i.d. registers. - - unsigned short i2eChannelMap[ABS_MAX_BOXES]; - - // Same as above, except each is derived from firmware attempting to detect - // the uart presence (by reading a valid GFRCR register). If bits are set in - // i2eChannelMap and not in i2eGoodMap, there is a potential problem. - - unsigned short i2eGoodMap[ABS_MAX_BOXES]; - - // --------------------------- - // For indirect function calls - - // Routine to cause an N-millisecond delay: Patched by the ii2Initialize - // function. - - void (*i2eDelay)(unsigned int); - - // Routine to write N bytes to the board through the FIFO. Returns true if - // all copacetic, otherwise returns false and error is in i2eError field. - // IF COUNT IS ODD, ROUNDS UP TO THE NEXT EVEN NUMBER. - - int (*i2eWriteBuf)(struct _i2eBordStr *, unsigned char *, int); - - // Routine to read N bytes from the board through the FIFO. Returns true if - // copacetic, otherwise returns false and error in i2eError. - // IF COUNT IS ODD, ROUNDS UP TO THE NEXT EVEN NUMBER. - - int (*i2eReadBuf)(struct _i2eBordStr *, unsigned char *, int); - - // Returns a word from FIFO. Will use 2 byte operations if needed. - - unsigned short (*i2eReadWord)(struct _i2eBordStr *); - - // Writes a word to FIFO. Will use 2 byte operations if needed. - - void (*i2eWriteWord)(struct _i2eBordStr *, unsigned short); - - // Waits specified time for the Transmit FIFO to go empty. Returns true if - // ok, otherwise returns false and error in i2eError. - - int (*i2eWaitForTxEmpty)(struct _i2eBordStr *, int); - - // Returns true or false according to whether the outgoing mailbox is empty. - - int (*i2eTxMailEmpty)(struct _i2eBordStr *); - - // Checks whether outgoing mailbox is empty. If so, sends mail and returns - // true. Otherwise returns false. - - int (*i2eTrySendMail)(struct _i2eBordStr *, unsigned char); - - // If no mail available, returns NO_MAIL_HERE, else returns the value in the - // mailbox (guaranteed can't be NO_MAIL_HERE). - - unsigned short (*i2eGetMail)(struct _i2eBordStr *); - - // Enables the board to interrupt the host when it writes to the mailbox. - // Irqs will not occur, however, until the loadware separately enables - // interrupt generation to the host. The standard loadware does this in - // response to a command packet sent by the host. (Also, disables - // any other potential interrupt sources from the board -- other than the - // inbound mailbox). - - void (*i2eEnableMailIrq)(struct _i2eBordStr *); - - // Writes an arbitrary value to the mask register. - - void (*i2eWriteMask)(struct _i2eBordStr *, unsigned char); - - - // State information - - // During downloading, indicates the number of blocks remaining to download - // to the board. - - short i2eToLoad; - - // State of board (see manifests below) (e.g., whether in reset condition, - // whether standard loadware is installed, etc. - - unsigned char i2eState; - - // These three fields are only valid when there is loadware running on the - // board. (i2eState == II_STATE_LOADED or i2eState == II_STATE_STDLOADED ) - - unsigned char i2eLVersion; // Loadware version - unsigned char i2eLRevision; // Loadware revision - unsigned char i2eLSub; // Loadware subrevision - - // Flags which only have meaning in the context of the standard loadware. - // Somewhat violates the layering concept, but there is so little additional - // needed at the board level (while much additional at the channel level), - // that this beats maintaining two different per-board structures. - - // Indicates which IRQ the board has been initialized (from software) to use - // For MicroChannel boards, any value different from IRQ_UNDEFINED means - // that the software command has been sent to enable interrupts (or specify - // they are disabled). Special value: IRQ_UNDEFINED indicates that the - // software command to select the interrupt has not yet been sent, therefore - // (since the standard loadware insists that it be sent before any other - // packets are sent) no other packets should be sent yet. - - unsigned short i2eUsingIrq; - - // This is set when we hit the MB_OUT_STUFFED mailbox, which prevents us - // putting more in the mailbox until an appropriate mailbox message is - // received. - - unsigned char i2eWaitingForEmptyFifo; - - // Any mailbox bits waiting to be sent to the board are OR'ed in here. - - unsigned char i2eOutMailWaiting; - - // The head of any incoming packet is read into here, is then examined and - // we dispatch accordingly. - - unsigned short i2eLeadoffWord[1]; - - // Running counter of interrupts where the mailbox indicated incoming data. - - unsigned short i2eFifoInInts; - - // Running counter of interrupts where the mailbox indicated outgoing data - // had been stripped. - - unsigned short i2eFifoOutInts; - - // If not void, gives the address of a routine to call if fatal board error - // is found (only applies to standard l/w). - - void (*i2eFatalTrap)(struct _i2eBordStr *); - - // Will point to an array of some sort of channel structures (whose format - // is unknown at this level, being a function of what loadware is - // installed and the code configuration (max sizes of buffers, etc.)). - - void *i2eChannelPtr; - - // Set indicates that the board has gone fatal. - - unsigned short i2eFatal; - - // The number of elements pointed to by i2eChannelPtr. - - unsigned short i2eChannelCnt; - - // Ring-buffers of channel structures whose channels have particular needs. - - rwlock_t Fbuf_spinlock; - volatile - unsigned short i2Fbuf_strip; // Strip index - volatile - unsigned short i2Fbuf_stuff; // Stuff index - void *i2Fbuf[CH_QUEUE_SIZE]; // An array of channel pointers - // of channels who need to send - // flow control packets. - rwlock_t Dbuf_spinlock; - volatile - unsigned short i2Dbuf_strip; // Strip index - volatile - unsigned short i2Dbuf_stuff; // Stuff index - void *i2Dbuf[CH_QUEUE_SIZE]; // An array of channel pointers - // of channels who need to send - // data or in-line command packets. - rwlock_t Bbuf_spinlock; - volatile - unsigned short i2Bbuf_strip; // Strip index - volatile - unsigned short i2Bbuf_stuff; // Stuff index - void *i2Bbuf[CH_QUEUE_SIZE]; // An array of channel pointers - // of channels who need to send - // bypass command packets. - - /* - * A set of flags to indicate that certain events have occurred on at least - * one of the ports on this board. We use this to decide whether to spin - * through the channels looking for breaks, etc. - */ - int got_input; - int status_change; - bidStat channelBtypes; - - /* - * Debugging counters, etc. - */ - unsigned long debugFlowQueued; - unsigned long debugInlineQueued; - unsigned long debugDataQueued; - unsigned long debugBypassQueued; - unsigned long debugFlowCount; - unsigned long debugInlineCount; - unsigned long debugBypassCount; - - rwlock_t read_fifo_spinlock; - rwlock_t write_fifo_spinlock; - -// For queuing interrupt bottom half handlers. /\/\|=mhw=|\/\/ - struct work_struct tqueue_interrupt; - - struct timer_list SendPendingTimer; // Used by iiSendPending - unsigned int SendPendingRetry; -} i2eBordStr, *i2eBordStrPtr; - -//------------------------------------------------------------------- -// Macro Definitions for the indirect calls defined in the i2eBordStr -//------------------------------------------------------------------- -// -#define iiDelay(a,b) (*(a)->i2eDelay)(b) -#define iiWriteBuf(a,b,c) (*(a)->i2eWriteBuf)(a,b,c) -#define iiReadBuf(a,b,c) (*(a)->i2eReadBuf)(a,b,c) - -#define iiWriteWord(a,b) (*(a)->i2eWriteWord)(a,b) -#define iiReadWord(a) (*(a)->i2eReadWord)(a) - -#define iiWaitForTxEmpty(a,b) (*(a)->i2eWaitForTxEmpty)(a,b) - -#define iiTxMailEmpty(a) (*(a)->i2eTxMailEmpty)(a) -#define iiTrySendMail(a,b) (*(a)->i2eTrySendMail)(a,b) - -#define iiGetMail(a) (*(a)->i2eGetMail)(a) -#define iiEnableMailIrq(a) (*(a)->i2eEnableMailIrq)(a) -#define iiDisableMailIrq(a) (*(a)->i2eWriteMask)(a,0) -#define iiWriteMask(a,b) (*(a)->i2eWriteMask)(a,b) - -//------------------------------------------- -// Manifests for i2eBordStr: -//------------------------------------------- - -typedef void (*delayFunc_t)(unsigned int); - -// i2eValid -// -#define I2E_MAGIC 0x4251 // Structure is valid. -#define I2E_INCOMPLETE 0x1122 // Structure failed during init. - - -// i2eError -// -#define I2EE_GOOD 0 // Operation successful -#define I2EE_BADADDR 1 // Address out of range -#define I2EE_BADSTATE 2 // Attempt to perform a function when the board - // structure was in the incorrect state -#define I2EE_BADMAGIC 3 // Bad magic number from Power On test (i2ePomSize - // reflects what was read -#define I2EE_PORM_SHORT 4 // Power On message too short -#define I2EE_PORM_LONG 5 // Power On message too long -#define I2EE_BAD_FAMILY 6 // Un-supported board family type -#define I2EE_INCONSIST 7 // Firmware reports something impossible, - // e.g. unexpected number of ports... Almost no - // excuse other than bad FIFO... -#define I2EE_POSTERR 8 // Power-On self test reported a bad error -#define I2EE_BADBUS 9 // Unknown Bus type declared in message -#define I2EE_TXE_TIME 10 // Timed out waiting for TX Fifo to empty -#define I2EE_INVALID 11 // i2eValid field does not indicate a valid and - // complete board structure (for functions which - // require this be so.) -#define I2EE_BAD_PORT 12 // Discrepancy between channels actually found and - // what the product is supposed to have. Check - // i2eGoodMap vs i2eChannelMap for details. -#define I2EE_BAD_IRQ 13 // Someone specified an unsupported IRQ -#define I2EE_NOCHANNELS 14 // No channel structures have been defined (for - // functions requiring this). - -// i2eFifoStyle -// -#define FIFO_II 0 /* IntelliPort-II style: see also i2hw.h */ -#define FIFO_IIEX 1 /* IntelliPort-IIEX style */ - -// i2eGetMail -// -#define NO_MAIL_HERE 0x1111 // Since mail is unsigned char, cannot possibly - // promote to 0x1111. -// i2eState -// -#define II_STATE_COLD 0 // Addresses have been defined, but board not even - // reset yet. -#define II_STATE_RESET 1 // Board,if it exists, has just been reset -#define II_STATE_READY 2 // Board ready for its first block -#define II_STATE_LOADING 3 // Board continuing load -#define II_STATE_LOADED 4 // Board has finished load: status ok -#define II_STATE_BADLOAD 5 // Board has finished load: failed! -#define II_STATE_STDLOADED 6 // Board has finished load: standard firmware - -// i2eUsingIrq -// -#define I2_IRQ_UNDEFINED 0x1352 /* No valid irq (or polling = 0) can - * ever promote to this! */ -//------------------------------------------ -// Handy Macros for i2ellis.c and others -// Note these are common to -II and -IIEX -//------------------------------------------ - -// Given a pointer to the board structure, does the input FIFO have any data or -// not? -// -#define I2_HAS_INPUT(pB) !(inb(pB->i2eStatus) & ST_IN_EMPTY) - -// Given a pointer to the board structure, is there anything in the incoming -// mailbox? -// -#define I2_HAS_MAIL(pB) (inb(pB->i2eStatus) & ST_IN_MAIL) - -#define I2_UPDATE_FIFO_ROOM(pB) ((pB)->i2eFifoRemains = (pB)->i2eFifoSize) - -//------------------------------------------ -// Function Declarations for i2ellis.c -//------------------------------------------ -// -// Functions called directly -// -// Initialization of a board & structure is in four (five!) parts: -// -// 1) iiSetAddress() - Define the board address & delay function for a board. -// 2) iiReset() - Reset the board (provided it exists) -// -- Note you may do this to several boards -- -// 3) iiResetDelay() - Delay for 2 seconds (once for all boards) -// 4) iiInitialize() - Attempt to read Power-up message; further initialize -// accelerators -// -// Then you may use iiDownloadAll() or iiDownloadFile() (in i2file.c) to write -// loadware. To change loadware, you must begin again with step 2, resetting -// the board again (step 1 not needed). - -static int iiSetAddress(i2eBordStrPtr, int, delayFunc_t ); -static int iiReset(i2eBordStrPtr); -static int iiResetDelay(i2eBordStrPtr); -static int iiInitialize(i2eBordStrPtr); - -// Routine to validate that all channels expected are there. -// -extern int iiValidateChannels(i2eBordStrPtr); - -// Routine used to download a block of loadware. -// -static int iiDownloadBlock(i2eBordStrPtr, loadHdrStrPtr, int); - -// Return values given by iiDownloadBlock, iiDownloadAll, iiDownloadFile: -// -#define II_DOWN_BADVALID 0 // board structure is invalid -#define II_DOWN_CONTINUING 1 // So far, so good, firmware expects more -#define II_DOWN_GOOD 2 // Download complete, CRC good -#define II_DOWN_BAD 3 // Download complete, but CRC bad -#define II_DOWN_BADFILE 4 // Bad magic number in loadware file -#define II_DOWN_BADSTATE 5 // Board is in an inappropriate state for - // downloading loadware. (see i2eState) -#define II_DOWN_TIMEOUT 6 // Timeout waiting for firmware -#define II_DOWN_OVER 7 // Too much data -#define II_DOWN_UNDER 8 // Not enough data -#define II_DOWN_NOFILE 9 // Loadware file not found - -// Routine to download an entire loadware module: Return values are a subset of -// iiDownloadBlock's, excluding, of course, II_DOWN_CONTINUING -// -static int iiDownloadAll(i2eBordStrPtr, loadHdrStrPtr, int, int); - -// Many functions defined here return True if good, False otherwise, with an -// error code in i2eError field. Here is a handy macro for setting the error -// code and returning. -// -#define I2_COMPLETE(pB,code) do { \ - pB->i2eError = code; \ - return (code == I2EE_GOOD);\ - } while (0) - -#endif // I2ELLIS_H diff --git a/drivers/char/ip2/i2hw.h b/drivers/char/ip2/i2hw.h deleted file mode 100644 index c0ba6c05f0cd..000000000000 --- a/drivers/char/ip2/i2hw.h +++ /dev/null @@ -1,652 +0,0 @@ -/******************************************************************************* -* -* (c) 1999 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Definitions limited to properties of the hardware or the -* bootstrap firmware. As such, they are applicable regardless of -* operating system or loadware (standard or diagnostic). -* -*******************************************************************************/ -#ifndef I2HW_H -#define I2HW_H 1 -//------------------------------------------------------------------------------ -// Revision History: -// -// 23 September 1991 MAG First Draft Started...through... -// 11 October 1991 ... Continuing development... -// 6 August 1993 Added support for ISA-4 (asic) which is architected -// as an ISA-CEX with a single 4-port box. -// -// 20 December 1996 AKM Version for Linux -// -//------------------------------------------------------------------------------ -/*------------------------------------------------------------------------------ - -HARDWARE DESCRIPTION: - -Introduction: - -The IntelliPort-II and IntelliPort-IIEX products occupy a block of eight (8) -addresses in the host's I/O space. - -Some addresses are used to transfer data to/from the board, some to transfer -so-called "mailbox" messages, and some to read bit-mapped status information. -While all the products in the line are functionally similar, some use a 16-bit -data path to transfer data while others use an 8-bit path. Also, the use of -command /status/mailbox registers differs slightly between the II and IIEX -branches of the family. - -The host determines what type of board it is dealing with by reading a string of -sixteen characters from the board. These characters are always placed in the -fifo by the board's local processor whenever the board is reset (either from -power-on or under software control) and are known as the "Power-on Reset -Message." In order that this message can be read from either type of board, the -hardware registers used in reading this message are the same. Once this message -has been read by the host, then it has the information required to operate. - -General Differences between boards: - -The greatest structural difference is between the -II and -IIEX families of -product. The -II boards use the Am4701 dual 512x8 bidirectional fifo to support -the data path, mailbox registers, and status registers. This chip contains some -features which are not used in the IntelliPort-II products; a description of -these is omitted here. Because of these many features, it contains many -registers, too many to access directly within a small address space. They are -accessed by first writing a value to a "pointer" register. This value selects -the register to be accessed. The next read or write to that address accesses -the selected register rather than the pointer register. - -The -IIEX boards use a proprietary design similar to the Am4701 in function. But -because of a simpler, more streamlined design it doesn't require so many -registers. This means they can be accessed directly in single operations rather -than through a pointer register. - -Besides these differences, there are differences in whether 8-bit or 16-bit -transfers are used to move data to the board. - -The -II boards are capable only of 8-bit data transfers, while the -IIEX boards -may be configured for either 8-bit or 16-bit data transfers. If the on-board DIP -switch #8 is ON, and the card has been installed in a 16-bit slot, 16-bit -transfers are supported (and will be expected by the standard loadware). The -on-board firmware can determine the position of the switch, and whether the -board is installed in a 16-bit slot; it supplies this information to the host as -part of the power-up reset message. - -The configuration switch (#8) and slot selection do not directly configure the -hardware. It is up to the on-board loadware and host-based drivers to act -according to the selected options. That is, loadware and drivers could be -written to perform 8-bit transfers regardless of the state of the DIP switch or -slot (and in a diagnostic environment might well do so). Likewise, 16-bit -transfers could be performed as long as the card is in a 16-bit slot. - -Note the slot selection and DIP switch selection are provided separately: a -board running in 8-bit mode in a 16-bit slot has a greater range of possible -interrupts to choose from; information of potential use to the host. - -All 8-bit data transfers are done in the same way, regardless of whether on a --II board or a -IIEX board. - -The host must consider two things then: 1) whether a -II or -IIEX product is -being used, and 2) whether an 8-bit or 16-bit data path is used. - -A further difference is that -II boards always have a 512-byte fifo operating in -each direction. -IIEX boards may use fifos of varying size; this size is -reported as part of the power-up message. - -I/O Map Of IntelliPort-II and IntelliPort-IIEX boards: -(Relative to the chosen base address) - -Addr R/W IntelliPort-II IntelliPort-IIEX ----- --- -------------- ---------------- -0 R/W Data Port (byte) Data Port (byte or word) -1 R/W (Not used) (MSB of word-wide data written to Data Port) -2 R Status Register Status Register -2 W Pointer Register Interrupt Mask Register -3 R/W (Not used) Mailbox Registers (6 bits: 11111100) -4,5 -- Reserved for future products -6 -- Reserved for future products -7 R Guaranteed to have no effect -7 W Hardware reset of board. - - -Rules: -All data transfers are performed using the even i/o address. If byte-wide data -transfers are being used, do INB/OUTB operations on the data port. If word-wide -transfers are used, do INW/OUTW operations. In some circumstances (such as -reading the power-up message) you will do INB from the data port, but in this -case the MSB of each word read is lost. When accessing all other unreserved -registers, use byte operations only. -------------------------------------------------------------------------------*/ - -//------------------------------------------------ -// Mandatory Includes: -//------------------------------------------------ -// -#include "ip2types.h" - -//------------------------------------------------------------------------- -// Manifests for the I/O map: -//------------------------------------------------------------------------- -// R/W: Data port (byte) for IntelliPort-II, -// R/W: Data port (byte or word) for IntelliPort-IIEX -// Incoming or outgoing data passes through a FIFO, the status of which is -// available in some of the bits in FIFO_STATUS. This (bidirectional) FIFO is -// the primary means of transferring data, commands, flow-control, and status -// information between the host and board. -// -#define FIFO_DATA 0 - -// Another way of passing information between the board and the host is -// through "mailboxes". Unlike a FIFO, a mailbox holds only a single byte of -// data. Writing data to the mailbox causes a status bit to be set, and -// potentially interrupting the intended receiver. The sender has some way to -// determine whether the data has been read yet; as soon as it has, it may send -// more. The mailboxes are handled differently on -II and -IIEX products, as -// suggested below. -//------------------------------------------------------------------------------ -// Read: Status Register for IntelliPort-II or -IIEX -// The presence of any bit set here will cause an interrupt to the host, -// provided the corresponding bit has been unmasked in the interrupt mask -// register. Furthermore, interrupts to the host are disabled globally until the -// loadware selects the irq line to use. With the exception of STN_MR, the bits -// remain set so long as the associated condition is true. -// -#define FIFO_STATUS 2 - -// Bit map of status bits which are identical for -II and -IIEX -// -#define ST_OUT_FULL 0x40 // Outbound FIFO full -#define ST_IN_EMPTY 0x20 // Inbound FIFO empty -#define ST_IN_MAIL 0x04 // Inbound Mailbox full - -// The following exists only on the Intelliport-IIEX, and indicates that the -// board has not read the last outgoing mailbox data yet. In the IntelliPort-II, -// the outgoing mailbox may be read back: a zero indicates the board has read -// the data. -// -#define STE_OUT_MAIL 0x80 // Outbound mailbox full (!) - -// The following bits are defined differently for -II and -IIEX boards. Code -// which relies on these bits will need to be functionally different for the two -// types of boards and should be generally avoided because of the additional -// complexity this creates: - -// Bit map of status bits only on -II - -// Fifo has been RESET (cleared when the status register is read). Note that -// this condition cannot be masked and would always interrupt the host, except -// that the hardware reset also disables interrupts globally from the board -// until re-enabled by loadware. This could also arise from the -// Am4701-supported command to reset the chip, but this command is generally not -// used here. -// -#define STN_MR 0x80 - -// See the AMD Am4701 data sheet for details on the following four bits. They -// are not presently used by Computone drivers. -// -#define STN_OUT_AF 0x10 // Outbound FIFO almost full (programmable) -#define STN_IN_AE 0x08 // Inbound FIFO almost empty (programmable) -#define STN_BD 0x02 // Inbound byte detected -#define STN_PE 0x01 // Parity/Framing condition detected - -// Bit-map of status bits only on -IIEX -// -#define STE_OUT_HF 0x10 // Outbound FIFO half full -#define STE_IN_HF 0x08 // Inbound FIFO half full -#define STE_IN_FULL 0x02 // Inbound FIFO full -#define STE_OUT_MT 0x01 // Outbound FIFO empty - -//------------------------------------------------------------------------------ - -// Intelliport-II -- Write Only: the pointer register. -// Values are written to this register to select the Am4701 internal register to -// be accessed on the next operation. -// -#define FIFO_PTR 0x02 - -// Values for the pointer register -// -#define SEL_COMMAND 0x1 // Selects the Am4701 command register - -// Some possible commands: -// -#define SEL_CMD_MR 0x80 // Am4701 command to reset the chip -#define SEL_CMD_SH 0x40 // Am4701 command to map the "other" port into the - // status register. -#define SEL_CMD_UNSH 0 // Am4701 command to "unshift": port maps into its - // own status register. -#define SEL_MASK 0x2 // Selects the Am4701 interrupt mask register. The - // interrupt mask register is bit-mapped to match - // the status register (FIFO_STATUS) except for - // STN_MR. (See above.) -#define SEL_BYTE_DET 0x3 // Selects the Am4701 byte-detect register. (Not - // normally used except in diagnostics.) -#define SEL_OUTMAIL 0x4 // Selects the outbound mailbox (R/W). Reading back - // a value of zero indicates that the mailbox has - // been read by the board and is available for more - // data./ Writing to the mailbox optionally - // interrupts the board, depending on the loadware's - // setting of its interrupt mask register. -#define SEL_AEAF 0x5 // Selects AE/AF threshold register. -#define SEL_INMAIL 0x6 // Selects the inbound mailbox (Read) - -//------------------------------------------------------------------------------ -// IntelliPort-IIEX -- Write Only: interrupt mask (and misc flags) register: -// Unlike IntelliPort-II, bit assignments do NOT match those of the status -// register. -// -#define FIFO_MASK 0x2 - -// Mailbox readback select: -// If set, reads to FIFO_MAIL will read the OUTBOUND mailbox (host to board). If -// clear (default on reset) reads to FIFO_MAIL will read the INBOUND mailbox. -// This is the normal situation. The clearing of a mailbox is determined on -// -IIEX boards by waiting for the STE_OUT_MAIL bit to clear. Readback -// capability is provided for diagnostic purposes only. -// -#define MX_OUTMAIL_RSEL 0x80 - -#define MX_IN_MAIL 0x40 // Enables interrupts when incoming mailbox goes - // full (ST_IN_MAIL set). -#define MX_IN_FULL 0x20 // Enables interrupts when incoming FIFO goes full - // (STE_IN_FULL). -#define MX_IN_MT 0x08 // Enables interrupts when incoming FIFO goes empty - // (ST_IN_MT). -#define MX_OUT_FULL 0x04 // Enables interrupts when outgoing FIFO goes full - // (ST_OUT_FULL). -#define MX_OUT_MT 0x01 // Enables interrupts when outgoing FIFO goes empty - // (STE_OUT_MT). - -// Any remaining bits are reserved, and should be written to ZERO for -// compatibility with future Computone products. - -//------------------------------------------------------------------------------ -// IntelliPort-IIEX: -- These are only 6-bit mailboxes !!! -- 11111100 (low two -// bits always read back 0). -// Read: One of the mailboxes, usually Inbound. -// Inbound Mailbox (MX_OUTMAIL_RSEL = 0) -// Outbound Mailbox (MX_OUTMAIL_RSEL = 1) -// Write: Outbound Mailbox -// For the IntelliPort-II boards, the outbound mailbox is read back to determine -// whether the board has read the data (0 --> data has been read). For the -// IntelliPort-IIEX, this is done by reading a status register. To determine -// whether mailbox is available for more outbound data, use the STE_OUT_MAIL bit -// in FIFO_STATUS. Moreover, although the Outbound Mailbox can be read back by -// setting MX_OUTMAIL_RSEL, it is NOT cleared when the board reads it, as is the -// case with the -II boards. For this reason, FIFO_MAIL is normally used to read -// the inbound FIFO, and MX_OUTMAIL_RSEL kept clear. (See above for -// MX_OUTMAIL_RSEL description.) -// -#define FIFO_MAIL 0x3 - -//------------------------------------------------------------------------------ -// WRITE ONLY: Resets the board. (Data doesn't matter). -// -#define FIFO_RESET 0x7 - -//------------------------------------------------------------------------------ -// READ ONLY: Will have no effect. (Data is undefined.) -// Actually, there will be an effect, in that the operation is sure to generate -// a bus cycle: viz., an I/O byte Read. This fact can be used to enforce short -// delays when no comparable time constant is available. -// -#define FIFO_NOP 0x7 - -//------------------------------------------------------------------------------ -// RESET & POWER-ON RESET MESSAGE -/*------------------------------------------------------------------------------ -RESET: - -The IntelliPort-II and -IIEX boards are reset in three ways: Power-up, channel -reset, and via a write to the reset register described above. For products using -the ISA bus, these three sources of reset are equvalent. For MCA and EISA buses, -the Power-up and channel reset sources cause additional hardware initialization -which should only occur at system startup time. - -The third type of reset, called a "command reset", is done by writing any data -to the FIFO_RESET address described above. This resets the on-board processor, -FIFO, UARTS, and associated hardware. - -This passes control of the board to the bootstrap firmware, which performs a -Power-On Self Test and which detects its current configuration. For example, --IIEX products determine the size of FIFO which has been installed, and the -number and type of expansion boxes attached. - -This and other information is then written to the FIFO in a 16-byte data block -to be read by the host. This block is guaranteed to be present within two (2) -seconds of having received the command reset. The firmware is now ready to -receive loadware from the host. - -It is good practice to perform a command reset to the board explicitly as part -of your software initialization. This allows your code to properly restart from -a soft boot. (Many systems do not issue channel reset on soft boot). - -Because of a hardware reset problem on some of the Cirrus Logic 1400's which are -used on the product, it is recommended that you reset the board twice, separated -by an approximately 50 milliseconds delay. (VERY approximately: probably ok to -be off by a factor of five. The important point is that the first command reset -in fact generates a reset pulse on the board. This pulse is guaranteed to last -less than 10 milliseconds. The additional delay ensures the 1400 has had the -chance to respond sufficiently to the first reset. Why not a longer delay? Much -more than 50 milliseconds gets to be noticable, but the board would still work. - -Once all 16 bytes of the Power-on Reset Message have been read, the bootstrap -firmware is ready to receive loadware. - -Note on Power-on Reset Message format: -The various fields have been designed with future expansion in view. -Combinations of bitfields and values have been defined which define products -which may not currently exist. This has been done to allow drivers to anticipate -the possible introduction of products in a systematic fashion. This is not -intended to suggest that each potential product is actually under consideration. -------------------------------------------------------------------------------*/ - -//---------------------------------------- -// Format of Power-on Reset Message -//---------------------------------------- - -typedef union _porStr // "por" stands for Power On Reset -{ - unsigned char c[16]; // array used when considering the message as a - // string of undifferentiated characters - - struct // Elements used when considering values - { - // The first two bytes out of the FIFO are two magic numbers. These are - // intended to establish that there is indeed a member of the - // IntelliPort-II(EX) family present. The remaining bytes may be - // expected // to be valid. When reading the Power-on Reset message, - // if the magic numbers do not match it is probably best to stop - // reading immediately. You are certainly not reading our board (unless - // hardware is faulty), and may in fact be reading some other piece of - // hardware. - - unsigned char porMagic1; // magic number: first byte == POR_MAGIC_1 - unsigned char porMagic2; // magic number: second byte == POR_MAGIC_2 - - // The Version, Revision, and Subrevision are stored as absolute numbers - // and would normally be displayed in the format V.R.S (e.g. 1.0.2) - - unsigned char porVersion; // Bootstrap firmware version number - unsigned char porRevision; // Bootstrap firmware revision number - unsigned char porSubRev; // Bootstrap firmware sub-revision number - - unsigned char porID; // Product ID: Bit-mapped according to - // conventions described below. Among other - // things, this allows us to distinguish - // IntelliPort-II boards from IntelliPort-IIEX - // boards. - - unsigned char porBus; // IntelliPort-II: Unused - // IntelliPort-IIEX: Bus Information: - // Bit-mapped below - - unsigned char porMemory; // On-board DRAM size: in 32k blocks - - // porPorts1 (and porPorts2) are used to determine the ports which are - // available to the board. For non-expandable product, a single number - // is sufficient. For expandable product, the board may be connected - // to as many as four boxes. Each box may be (so far) either a 16-port - // or an 8-port size. Whenever an 8-port box is used, the remaining 8 - // ports leave gaps between existing channels. For that reason, - // expandable products must report a MAP of available channels. Since - // each UART supports four ports, we represent each UART found by a - // single bit. Using two bytes to supply the mapping information we - // report the presense or absense of up to 16 UARTS, or 64 ports in - // steps of 4 ports. For -IIEX products, the ports are numbered - // starting at the box closest to the controller in the "chain". - - // Interpreted Differently for IntelliPort-II and -IIEX. - // -II: Number of ports (Derived actually from product ID). See - // Diag1&2 to indicate if uart was actually detected. - // -IIEX: Bit-map of UARTS found, LSB (see below for MSB of this). This - // bitmap is based on detecting the uarts themselves; - // see porFlags for information from the box i.d's. - unsigned char porPorts1; - - unsigned char porDiag1; // Results of on-board P.O.S.T, 1st byte - unsigned char porDiag2; // Results of on-board P.O.S.T, 2nd byte - unsigned char porSpeed; // Speed of local CPU: given as MHz x10 - // e.g., 16.0 MHz CPU is reported as 160 - unsigned char porFlags; // Misc information (see manifests below) - // Bit-mapped: CPU type, UART's present - - unsigned char porPorts2; // -II: Undefined - // -IIEX: Bit-map of UARTS found, MSB (see - // above for LSB) - - // IntelliPort-II: undefined - // IntelliPort-IIEX: 1 << porFifoSize gives the size, in bytes, of the - // host interface FIFO, in each direction. When running the -IIEX in - // 8-bit mode, fifo capacity is halved. The bootstrap firmware will - // have already accounted for this fact in generating this number. - unsigned char porFifoSize; - - // IntelliPort-II: undefined - // IntelliPort-IIEX: The number of boxes connected. (Presently 1-4) - unsigned char porNumBoxes; - } e; -} porStr, *porStrPtr; - -//-------------------------- -// Values for porStr fields -//-------------------------- - -//--------------------- -// porMagic1, porMagic2 -//---------------------- -// -#define POR_MAGIC_1 0x96 // The only valid value for porMagic1 -#define POR_MAGIC_2 0x35 // The only valid value for porMagic2 -#define POR_1_INDEX 0 // Byte position of POR_MAGIC_1 -#define POR_2_INDEX 1 // Ditto for POR_MAGIC_2 - -//---------------------- -// porID -//---------------------- -// -#define POR_ID_FAMILY 0xc0 // These bits indicate the general family of - // product. -#define POR_ID_FII 0x00 // Family is "IntelliPort-II" -#define POR_ID_FIIEX 0x40 // Family is "IntelliPort-IIEX" - -// These bits are reserved, presently zero. May be used at a later date to -// convey other product information. -// -#define POR_ID_RESERVED 0x3c - -#define POR_ID_SIZE 0x03 // Remaining bits indicate number of ports & - // Connector information. -#define POR_ID_II_8 0x00 // For IntelliPort-II, indicates 8-port using - // standard brick. -#define POR_ID_II_8R 0x01 // For IntelliPort-II, indicates 8-port using - // RJ11's (no CTS) -#define POR_ID_II_6 0x02 // For IntelliPort-II, indicates 6-port using - // RJ45's -#define POR_ID_II_4 0x03 // For IntelliPort-II, indicates 4-port using - // 4xRJ45 connectors -#define POR_ID_EX 0x00 // For IntelliPort-IIEX, indicates standard - // expandable controller (other values reserved) - -//---------------------- -// porBus -//---------------------- - -// IntelliPort-IIEX only: Board is installed in a 16-bit slot -// -#define POR_BUS_SLOT16 0x20 - -// IntelliPort-IIEX only: DIP switch #8 is on, selecting 16-bit host interface -// operation. -// -#define POR_BUS_DIP16 0x10 - -// Bits 0-2 indicate type of bus: This information is stored in the bootstrap -// loadware, different loadware being used on different products for different -// buses. For most situations, the drivers do not need this information; but it -// is handy in a diagnostic environment. For example, on microchannel boards, -// you would not want to try to test several interrupts, only the one for which -// you were configured. -// -#define POR_BUS_TYPE 0x07 - -// Unknown: this product doesn't know what bus it is running in. (e.g. if same -// bootstrap firmware were wanted for two different buses.) -// -#define POR_BUS_T_UNK 0 - -// Note: existing firmware for ISA-8 and MC-8 currently report the POR_BUS_T_UNK -// state, since the same bootstrap firmware is used for each. - -#define POR_BUS_T_MCA 1 // MCA BUS */ -#define POR_BUS_T_EISA 2 // EISA BUS */ -#define POR_BUS_T_ISA 3 // ISA BUS */ - -// Values 4-7 Reserved - -// Remaining bits are reserved - -//---------------------- -// porDiag1 -//---------------------- - -#define POR_BAD_MAPPER 0x80 // HW failure on P.O.S.T: Chip mapper failed - -// These two bits valid only for the IntelliPort-II -// -#define POR_BAD_UART1 0x01 // First 1400 bad -#define POR_BAD_UART2 0x02 // Second 1400 bad - -//---------------------- -// porDiag2 -//---------------------- - -#define POR_DEBUG_PORT 0x80 // debug port was detected by the P.O.S.T -#define POR_DIAG_OK 0x00 // Indicates passage: Failure codes not yet - // available. - // Other bits undefined. -//---------------------- -// porFlags -//---------------------- - -#define POR_CPU 0x03 // These bits indicate supposed CPU type -#define POR_CPU_8 0x01 // Board uses an 80188 (no such thing yet) -#define POR_CPU_6 0x02 // Board uses an 80186 (all existing products) -#define POR_CEX4 0x04 // If set, this is an ISA-CEX/4: An ISA-4 (asic) - // which is architected like an ISA-CEX connected - // to a (hitherto impossible) 4-port box. -#define POR_BOXES 0xf0 // Valid for IntelliPort-IIEX only: Map of Box - // sizes based on box I.D. -#define POR_BOX_16 0x10 // Set indicates 16-port, clear 8-port - -//------------------------------------- -// LOADWARE and DOWNLOADING CODE -//------------------------------------- - -/* -Loadware may be sent to the board in two ways: -1) It may be read from a (binary image) data file block by block as each block - is sent to the board. This is only possible when the initialization is - performed by code which can access your file system. This is most suitable - for diagnostics and appications which use the interface library directly. - -2) It may be hard-coded into your source by including a .h file (typically - supplied by Computone), which declares a data array and initializes every - element. This achieves the same result as if an entire loadware file had - been read into the array. - - This requires more data space in your program, but access to the file system - is not required. This method is more suited to driver code, which typically - is running at a level too low to access the file system directly. - -At present, loadware can only be generated at Computone. - -All Loadware begins with a header area which has a particular format. This -includes a magic number which identifies the file as being (purportedly) -loadware, CRC (for the loader), and version information. -*/ - - -//----------------------------------------------------------------------------- -// Format of loadware block -// -// This is defined as a union so we can pass a pointer to one of these items -// and (if it is the first block) pick out the version information, etc. -// -// Otherwise, to deal with this as a simple character array -//------------------------------------------------------------------------------ - -#define LOADWARE_BLOCK_SIZE 512 // Number of bytes in each block of loadware - -typedef union _loadHdrStr -{ - unsigned char c[LOADWARE_BLOCK_SIZE]; // Valid for every block - - struct // These fields are valid for only the first block of loadware. - { - unsigned char loadMagic; // Magic number: see below - unsigned char loadBlocksMore; // How many more blocks? - unsigned char loadCRC[2]; // Two CRC bytes: used by loader - unsigned char loadVersion; // Version number - unsigned char loadRevision; // Revision number - unsigned char loadSubRevision; // Sub-revision number - unsigned char loadSpares[9]; // Presently unused - unsigned char loadDates[32]; // Null-terminated string which can give - // date and time of compilation - } e; -} loadHdrStr, *loadHdrStrPtr; - -//------------------------------------ -// Defines for downloading code: -//------------------------------------ - -// The loadMagic field in the first block of the loadfile must be this, else the -// file is not valid. -// -#define MAGIC_LOADFILE 0x3c - -// How do we know the load was successful? On completion of the load, the -// bootstrap firmware returns a code to indicate whether it thought the download -// was valid and intends to execute it. These are the only possible valid codes: -// -#define LOADWARE_OK 0xc3 // Download was ok -#define LOADWARE_BAD 0x5a // Download was bad (CRC error) - -// Constants applicable to writing blocks of loadware: -// The first block of loadware might take 600 mS to load, in extreme cases. -// (Expandable board: worst case for sending startup messages to the LCD's). -// The 600mS figure is not really a calculation, but a conservative -// guess/guarantee. Usually this will be within 100 mS, like subsequent blocks. -// -#define MAX_DLOAD_START_TIME 1000 // 1000 mS -#define MAX_DLOAD_READ_TIME 100 // 100 mS - -// Firmware should respond with status (see above) within this long of host -// having sent the final block. -// -#define MAX_DLOAD_ACK_TIME 100 // 100 mS, again! - -//------------------------------------------------------ -// MAXIMUM NUMBER OF PORTS PER BOARD: -// This is fixed for now (with the expandable), but may -// be expanding according to even newer products. -//------------------------------------------------------ -// -#define ABS_MAX_BOXES 4 // Absolute most boxes per board -#define ABS_BIGGEST_BOX 16 // Absolute the most ports per box -#define ABS_MOST_PORTS (ABS_MAX_BOXES * ABS_BIGGEST_BOX) - -#define I2_OUTSW(port, addr, count) outsw((port), (addr), (((count)+1)/2)) -#define I2_OUTSB(port, addr, count) outsb((port), (addr), (((count)+1))&-2) -#define I2_INSW(port, addr, count) insw((port), (addr), (((count)+1)/2)) -#define I2_INSB(port, addr, count) insb((port), (addr), (((count)+1))&-2) - -#endif // I2HW_H - diff --git a/drivers/char/ip2/i2lib.c b/drivers/char/ip2/i2lib.c deleted file mode 100644 index 0d10b89218ed..000000000000 --- a/drivers/char/ip2/i2lib.c +++ /dev/null @@ -1,2214 +0,0 @@ -/******************************************************************************* -* -* (c) 1999 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport -* serial I/O controllers. -* -* DESCRIPTION: High-level interface code for the device driver. Uses the -* Extremely Low Level Interface Support (i2ellis.c). Provides an -* interface to the standard loadware, to support drivers or -* application code. (This is included source code, not a separate -* compilation module.) -* -*******************************************************************************/ -//------------------------------------------------------------------------------ -// Note on Strategy: -// Once the board has been initialized, it will interrupt us when: -// 1) It has something in the fifo for us to read (incoming data, flow control -// packets, or whatever). -// 2) It has stripped whatever we have sent last time in the FIFO (and -// consequently is ready for more). -// -// Note also that the buffer sizes declared in i2lib.h are VERY SMALL. This -// worsens performance considerably, but is done so that a great many channels -// might use only a little memory. -//------------------------------------------------------------------------------ - -//------------------------------------------------------------------------------ -// Revision History: -// -// 0.00 - 4/16/91 --- First Draft -// 0.01 - 4/29/91 --- 1st beta release -// 0.02 - 6/14/91 --- Changes to allow small model compilation -// 0.03 - 6/17/91 MAG Break reporting protected from interrupts routines with -// in-line asm added for moving data to/from ring buffers, -// replacing a variety of methods used previously. -// 0.04 - 6/21/91 MAG Initial flow-control packets not queued until -// i2_enable_interrupts time. Former versions would enqueue -// them at i2_init_channel time, before we knew how many -// channels were supposed to exist! -// 0.05 - 10/12/91 MAG Major changes: works through the ellis.c routines now; -// supports new 16-bit protocol and expandable boards. -// - 10/24/91 MAG Most changes in place and stable. -// 0.06 - 2/20/92 MAG Format of CMD_HOTACK corrected: the command takes no -// argument. -// 0.07 -- 3/11/92 MAG Support added to store special packet types at interrupt -// level (mostly responses to specific commands.) -// 0.08 -- 3/30/92 MAG Support added for STAT_MODEM packet -// 0.09 -- 6/24/93 MAG i2Link... needed to update number of boards BEFORE -// turning on the interrupt. -// 0.10 -- 6/25/93 MAG To avoid gruesome death from a bad board, we sanity check -// some incoming. -// -// 1.1 - 12/25/96 AKM Linux version. -// - 10/09/98 DMC Revised Linux version. -//------------------------------------------------------------------------------ - -//************ -//* Includes * -//************ - -#include -#include "i2lib.h" - - -//*********************** -//* Function Prototypes * -//*********************** -static void i2QueueNeeds(i2eBordStrPtr, i2ChanStrPtr, int); -static i2ChanStrPtr i2DeQueueNeeds(i2eBordStrPtr, int ); -static void i2StripFifo(i2eBordStrPtr); -static void i2StuffFifoBypass(i2eBordStrPtr); -static void i2StuffFifoFlow(i2eBordStrPtr); -static void i2StuffFifoInline(i2eBordStrPtr); -static int i2RetryFlushOutput(i2ChanStrPtr); - -// Not a documented part of the library routines (careful...) but the Diagnostic -// i2diag.c finds them useful to help the throughput in certain limited -// single-threaded operations. -static void iiSendPendingMail(i2eBordStrPtr); -static void serviceOutgoingFifo(i2eBordStrPtr); - -// Functions defined in ip2.c as part of interrupt handling -static void do_input(struct work_struct *); -static void do_status(struct work_struct *); - -//*************** -//* Debug Data * -//*************** -#ifdef DEBUG_FIFO - -unsigned char DBGBuf[0x4000]; -unsigned short I = 0; - -static void -WriteDBGBuf(char *s, unsigned char *src, unsigned short n ) -{ - char *p = src; - - // XXX: We need a spin lock here if we ever use this again - - while (*s) { // copy label - DBGBuf[I] = *s++; - I = I++ & 0x3fff; - } - while (n--) { // copy data - DBGBuf[I] = *p++; - I = I++ & 0x3fff; - } -} - -static void -fatality(i2eBordStrPtr pB ) -{ - int i; - - for (i=0;i= ' ' && DBGBuf[i] <= '~') { - printk(" %c ",DBGBuf[i]); - } else { - printk(" . "); - } - } - printk("\n"); - printk("Last index %x\n",I); -} -#endif /* DEBUG_FIFO */ - -//******** -//* Code * -//******** - -static inline int -i2Validate ( i2ChanStrPtr pCh ) -{ - //ip2trace(pCh->port_index, ITRC_VERIFY,ITRC_ENTER,2,pCh->validity, - // (CHANNEL_MAGIC | CHANNEL_SUPPORT)); - return ((pCh->validity & (CHANNEL_MAGIC_BITS | CHANNEL_SUPPORT)) - == (CHANNEL_MAGIC | CHANNEL_SUPPORT)); -} - -static void iiSendPendingMail_t(unsigned long data) -{ - i2eBordStrPtr pB = (i2eBordStrPtr)data; - - iiSendPendingMail(pB); -} - -//****************************************************************************** -// Function: iiSendPendingMail(pB) -// Parameters: Pointer to a board structure -// Returns: Nothing -// -// Description: -// If any outgoing mail bits are set and there is outgoing mailbox is empty, -// send the mail and clear the bits. -//****************************************************************************** -static void -iiSendPendingMail(i2eBordStrPtr pB) -{ - if (pB->i2eOutMailWaiting && (!pB->i2eWaitingForEmptyFifo) ) - { - if (iiTrySendMail(pB, pB->i2eOutMailWaiting)) - { - /* If we were already waiting for fifo to empty, - * or just sent MB_OUT_STUFFED, then we are - * still waiting for it to empty, until we should - * receive an MB_IN_STRIPPED from the board. - */ - pB->i2eWaitingForEmptyFifo |= - (pB->i2eOutMailWaiting & MB_OUT_STUFFED); - pB->i2eOutMailWaiting = 0; - pB->SendPendingRetry = 0; - } else { -/* The only time we hit this area is when "iiTrySendMail" has - failed. That only occurs when the outbound mailbox is - still busy with the last message. We take a short breather - to let the board catch up with itself and then try again. - 16 Retries is the limit - then we got a borked board. - /\/\|=mhw=|\/\/ */ - - if( ++pB->SendPendingRetry < 16 ) { - setup_timer(&pB->SendPendingTimer, - iiSendPendingMail_t, (unsigned long)pB); - mod_timer(&pB->SendPendingTimer, jiffies + 1); - } else { - printk( KERN_ERR "IP2: iiSendPendingMail unable to queue outbound mail\n" ); - } - } - } -} - -//****************************************************************************** -// Function: i2InitChannels(pB, nChannels, pCh) -// Parameters: Pointer to Ellis Board structure -// Number of channels to initialize -// Pointer to first element in an array of channel structures -// Returns: Success or failure -// -// Description: -// -// This function patches pointers, back-pointers, and initializes all the -// elements in the channel structure array. -// -// This should be run after the board structure is initialized, through having -// loaded the standard loadware (otherwise it complains). -// -// In any case, it must be done before any serious work begins initializing the -// irq's or sending commands... -// -//****************************************************************************** -static int -i2InitChannels ( i2eBordStrPtr pB, int nChannels, i2ChanStrPtr pCh) -{ - int index, stuffIndex; - i2ChanStrPtr *ppCh; - - if (pB->i2eValid != I2E_MAGIC) { - I2_COMPLETE(pB, I2EE_BADMAGIC); - } - if (pB->i2eState != II_STATE_STDLOADED) { - I2_COMPLETE(pB, I2EE_BADSTATE); - } - - rwlock_init(&pB->read_fifo_spinlock); - rwlock_init(&pB->write_fifo_spinlock); - rwlock_init(&pB->Dbuf_spinlock); - rwlock_init(&pB->Bbuf_spinlock); - rwlock_init(&pB->Fbuf_spinlock); - - // NO LOCK needed yet - this is init - - pB->i2eChannelPtr = pCh; - pB->i2eChannelCnt = nChannels; - - pB->i2Fbuf_strip = pB->i2Fbuf_stuff = 0; - pB->i2Dbuf_strip = pB->i2Dbuf_stuff = 0; - pB->i2Bbuf_strip = pB->i2Bbuf_stuff = 0; - - pB->SendPendingRetry = 0; - - memset ( pCh, 0, sizeof (i2ChanStr) * nChannels ); - - for (index = stuffIndex = 0, ppCh = (i2ChanStrPtr *)(pB->i2Fbuf); - nChannels && index < ABS_MOST_PORTS; - index++) - { - if ( !(pB->i2eChannelMap[index >> 4] & (1 << (index & 0xf)) ) ) { - continue; - } - rwlock_init(&pCh->Ibuf_spinlock); - rwlock_init(&pCh->Obuf_spinlock); - rwlock_init(&pCh->Cbuf_spinlock); - rwlock_init(&pCh->Pbuf_spinlock); - // NO LOCK needed yet - this is init - // Set up validity flag according to support level - if (pB->i2eGoodMap[index >> 4] & (1 << (index & 0xf)) ) { - pCh->validity = CHANNEL_MAGIC | CHANNEL_SUPPORT; - } else { - pCh->validity = CHANNEL_MAGIC; - } - pCh->pMyBord = pB; /* Back-pointer */ - - // Prepare an outgoing flow-control packet to send as soon as the chance - // occurs. - if ( pCh->validity & CHANNEL_SUPPORT ) { - pCh->infl.hd.i2sChannel = index; - pCh->infl.hd.i2sCount = 5; - pCh->infl.hd.i2sType = PTYPE_BYPASS; - pCh->infl.fcmd = 37; - pCh->infl.asof = 0; - pCh->infl.room = IBUF_SIZE - 1; - - pCh->whenSendFlow = (IBUF_SIZE/5)*4; // when 80% full - - // The following is similar to calling i2QueueNeeds, except that this - // is done in longhand, since we are setting up initial conditions on - // many channels at once. - pCh->channelNeeds = NEED_FLOW; // Since starting from scratch - pCh->sinceLastFlow = 0; // No bytes received since last flow - // control packet was queued - stuffIndex++; - *ppCh++ = pCh; // List this channel as needing - // initial flow control packet sent - } - - // Don't allow anything to be sent until the status packets come in from - // the board. - - pCh->outfl.asof = 0; - pCh->outfl.room = 0; - - // Initialize all the ring buffers - - pCh->Ibuf_stuff = pCh->Ibuf_strip = 0; - pCh->Obuf_stuff = pCh->Obuf_strip = 0; - pCh->Cbuf_stuff = pCh->Cbuf_strip = 0; - - memset( &pCh->icount, 0, sizeof (struct async_icount) ); - pCh->hotKeyIn = HOT_CLEAR; - pCh->channelOptions = 0; - pCh->bookMarks = 0; - init_waitqueue_head(&pCh->pBookmarkWait); - - init_waitqueue_head(&pCh->open_wait); - init_waitqueue_head(&pCh->close_wait); - init_waitqueue_head(&pCh->delta_msr_wait); - - // Set base and divisor so default custom rate is 9600 - pCh->BaudBase = 921600; // MAX for ST654, changed after we get - pCh->BaudDivisor = 96; // the boxids (UART types) later - - pCh->dataSetIn = 0; - pCh->dataSetOut = 0; - - pCh->wopen = 0; - pCh->throttled = 0; - - pCh->speed = CBR_9600; - - pCh->flags = 0; - - pCh->ClosingDelay = 5*HZ/10; - pCh->ClosingWaitTime = 30*HZ; - - // Initialize task queue objects - INIT_WORK(&pCh->tqueue_input, do_input); - INIT_WORK(&pCh->tqueue_status, do_status); - -#ifdef IP2DEBUG_TRACE - pCh->trace = ip2trace; -#endif - - ++pCh; - --nChannels; - } - // No need to check for wrap here; this is initialization. - pB->i2Fbuf_stuff = stuffIndex; - I2_COMPLETE(pB, I2EE_GOOD); - -} - -//****************************************************************************** -// Function: i2DeQueueNeeds(pB, type) -// Parameters: Pointer to a board structure -// type bit map: may include NEED_INLINE, NEED_BYPASS, or NEED_FLOW -// Returns: -// Pointer to a channel structure -// -// Description: Returns pointer struct of next channel that needs service of -// the type specified. Otherwise returns a NULL reference. -// -//****************************************************************************** -static i2ChanStrPtr -i2DeQueueNeeds(i2eBordStrPtr pB, int type) -{ - unsigned short queueIndex; - unsigned long flags; - - i2ChanStrPtr pCh = NULL; - - switch(type) { - - case NEED_INLINE: - - write_lock_irqsave(&pB->Dbuf_spinlock, flags); - if ( pB->i2Dbuf_stuff != pB->i2Dbuf_strip) - { - queueIndex = pB->i2Dbuf_strip; - pCh = pB->i2Dbuf[queueIndex]; - queueIndex++; - if (queueIndex >= CH_QUEUE_SIZE) { - queueIndex = 0; - } - pB->i2Dbuf_strip = queueIndex; - pCh->channelNeeds &= ~NEED_INLINE; - } - write_unlock_irqrestore(&pB->Dbuf_spinlock, flags); - break; - - case NEED_BYPASS: - - write_lock_irqsave(&pB->Bbuf_spinlock, flags); - if (pB->i2Bbuf_stuff != pB->i2Bbuf_strip) - { - queueIndex = pB->i2Bbuf_strip; - pCh = pB->i2Bbuf[queueIndex]; - queueIndex++; - if (queueIndex >= CH_QUEUE_SIZE) { - queueIndex = 0; - } - pB->i2Bbuf_strip = queueIndex; - pCh->channelNeeds &= ~NEED_BYPASS; - } - write_unlock_irqrestore(&pB->Bbuf_spinlock, flags); - break; - - case NEED_FLOW: - - write_lock_irqsave(&pB->Fbuf_spinlock, flags); - if (pB->i2Fbuf_stuff != pB->i2Fbuf_strip) - { - queueIndex = pB->i2Fbuf_strip; - pCh = pB->i2Fbuf[queueIndex]; - queueIndex++; - if (queueIndex >= CH_QUEUE_SIZE) { - queueIndex = 0; - } - pB->i2Fbuf_strip = queueIndex; - pCh->channelNeeds &= ~NEED_FLOW; - } - write_unlock_irqrestore(&pB->Fbuf_spinlock, flags); - break; - default: - printk(KERN_ERR "i2DeQueueNeeds called with bad type:%x\n",type); - break; - } - return pCh; -} - -//****************************************************************************** -// Function: i2QueueNeeds(pB, pCh, type) -// Parameters: Pointer to a board structure -// Pointer to a channel structure -// type bit map: may include NEED_INLINE, NEED_BYPASS, or NEED_FLOW -// Returns: Nothing -// -// Description: -// For each type of need selected, if the given channel is not already in the -// queue, adds it, and sets the flag indicating it is in the queue. -//****************************************************************************** -static void -i2QueueNeeds(i2eBordStrPtr pB, i2ChanStrPtr pCh, int type) -{ - unsigned short queueIndex; - unsigned long flags; - - // We turn off all the interrupts during this brief process, since the - // interrupt-level code might want to put things on the queue as well. - - switch (type) { - - case NEED_INLINE: - - write_lock_irqsave(&pB->Dbuf_spinlock, flags); - if ( !(pCh->channelNeeds & NEED_INLINE) ) - { - pCh->channelNeeds |= NEED_INLINE; - queueIndex = pB->i2Dbuf_stuff; - pB->i2Dbuf[queueIndex++] = pCh; - if (queueIndex >= CH_QUEUE_SIZE) - queueIndex = 0; - pB->i2Dbuf_stuff = queueIndex; - } - write_unlock_irqrestore(&pB->Dbuf_spinlock, flags); - break; - - case NEED_BYPASS: - - write_lock_irqsave(&pB->Bbuf_spinlock, flags); - if ((type & NEED_BYPASS) && !(pCh->channelNeeds & NEED_BYPASS)) - { - pCh->channelNeeds |= NEED_BYPASS; - queueIndex = pB->i2Bbuf_stuff; - pB->i2Bbuf[queueIndex++] = pCh; - if (queueIndex >= CH_QUEUE_SIZE) - queueIndex = 0; - pB->i2Bbuf_stuff = queueIndex; - } - write_unlock_irqrestore(&pB->Bbuf_spinlock, flags); - break; - - case NEED_FLOW: - - write_lock_irqsave(&pB->Fbuf_spinlock, flags); - if ((type & NEED_FLOW) && !(pCh->channelNeeds & NEED_FLOW)) - { - pCh->channelNeeds |= NEED_FLOW; - queueIndex = pB->i2Fbuf_stuff; - pB->i2Fbuf[queueIndex++] = pCh; - if (queueIndex >= CH_QUEUE_SIZE) - queueIndex = 0; - pB->i2Fbuf_stuff = queueIndex; - } - write_unlock_irqrestore(&pB->Fbuf_spinlock, flags); - break; - - case NEED_CREDIT: - pCh->channelNeeds |= NEED_CREDIT; - break; - default: - printk(KERN_ERR "i2QueueNeeds called with bad type:%x\n",type); - break; - } - return; -} - -//****************************************************************************** -// Function: i2QueueCommands(type, pCh, timeout, nCommands, pCs,...) -// Parameters: type - PTYPE_BYPASS or PTYPE_INLINE -// pointer to the channel structure -// maximum period to wait -// number of commands (n) -// n commands -// Returns: Number of commands sent, or -1 for error -// -// get board lock before calling -// -// Description: -// Queues up some commands to be sent to a channel. To send possibly several -// bypass or inline commands to the given channel. The timeout parameter -// indicates how many HUNDREDTHS OF SECONDS to wait until there is room: -// 0 = return immediately if no room, -ive = wait forever, +ive = number of -// 1/100 seconds to wait. Return values: -// -1 Some kind of nasty error: bad channel structure or invalid arguments. -// 0 No room to send all the commands -// (+) Number of commands sent -//****************************************************************************** -static int -i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands, - cmdSyntaxPtr pCs0,...) -{ - int totalsize = 0; - int blocksize; - int lastended; - cmdSyntaxPtr *ppCs; - cmdSyntaxPtr pCs; - int count; - int flag; - i2eBordStrPtr pB; - - unsigned short maxBlock; - unsigned short maxBuff; - short bufroom; - unsigned short stuffIndex; - unsigned char *pBuf; - unsigned char *pInsert; - unsigned char *pDest, *pSource; - unsigned short channel; - int cnt; - unsigned long flags = 0; - rwlock_t *lock_var_p = NULL; - - // Make sure the channel exists, otherwise do nothing - if ( !i2Validate ( pCh ) ) { - return -1; - } - - ip2trace (CHANN, ITRC_QUEUE, ITRC_ENTER, 0 ); - - pB = pCh->pMyBord; - - // Board must also exist, and THE INTERRUPT COMMAND ALREADY SENT - if (pB->i2eValid != I2E_MAGIC || pB->i2eUsingIrq == I2_IRQ_UNDEFINED) - return -2; - // If the board has gone fatal, return bad, and also hit the trap routine if - // it exists. - if (pB->i2eFatal) { - if ( pB->i2eFatalTrap ) { - (*(pB)->i2eFatalTrap)(pB); - } - return -3; - } - // Set up some variables, Which buffers are we using? How big are they? - switch(type) - { - case PTYPE_INLINE: - flag = INL; - maxBlock = MAX_OBUF_BLOCK; - maxBuff = OBUF_SIZE; - pBuf = pCh->Obuf; - break; - case PTYPE_BYPASS: - flag = BYP; - maxBlock = MAX_CBUF_BLOCK; - maxBuff = CBUF_SIZE; - pBuf = pCh->Cbuf; - break; - default: - return -4; - } - // Determine the total size required for all the commands - totalsize = blocksize = sizeof(i2CmdHeader); - lastended = 0; - ppCs = &pCs0; - for ( count = nCommands; count; count--, ppCs++) - { - pCs = *ppCs; - cnt = pCs->length; - // Will a new block be needed for this one? - // Two possible reasons: too - // big or previous command has to be at the end of a packet. - if ((blocksize + cnt > maxBlock) || lastended) { - blocksize = sizeof(i2CmdHeader); - totalsize += sizeof(i2CmdHeader); - } - totalsize += cnt; - blocksize += cnt; - - // If this command had to end a block, then we will make sure to - // account for it should there be any more blocks. - lastended = pCs->flags & END; - } - for (;;) { - // Make sure any pending flush commands go out before we add more data. - if ( !( pCh->flush_flags && i2RetryFlushOutput( pCh ) ) ) { - // How much room (this time through) ? - switch(type) { - case PTYPE_INLINE: - lock_var_p = &pCh->Obuf_spinlock; - write_lock_irqsave(lock_var_p, flags); - stuffIndex = pCh->Obuf_stuff; - bufroom = pCh->Obuf_strip - stuffIndex; - break; - case PTYPE_BYPASS: - lock_var_p = &pCh->Cbuf_spinlock; - write_lock_irqsave(lock_var_p, flags); - stuffIndex = pCh->Cbuf_stuff; - bufroom = pCh->Cbuf_strip - stuffIndex; - break; - default: - return -5; - } - if (--bufroom < 0) { - bufroom += maxBuff; - } - - ip2trace (CHANN, ITRC_QUEUE, 2, 1, bufroom ); - - // Check for overflow - if (totalsize <= bufroom) { - // Normal Expected path - We still hold LOCK - break; /* from for()- Enough room: goto proceed */ - } - ip2trace(CHANN, ITRC_QUEUE, 3, 1, totalsize); - write_unlock_irqrestore(lock_var_p, flags); - } else - ip2trace(CHANN, ITRC_QUEUE, 3, 1, totalsize); - - /* Prepare to wait for buffers to empty */ - serviceOutgoingFifo(pB); // Dump what we got - - if (timeout == 0) { - return 0; // Tired of waiting - } - if (timeout > 0) - timeout--; // So negative values == forever - - if (!in_interrupt()) { - schedule_timeout_interruptible(1); // short nap - } else { - // we cannot sched/sleep in interrupt silly - return 0; - } - if (signal_pending(current)) { - return 0; // Wake up! Time to die!!! - } - - ip2trace (CHANN, ITRC_QUEUE, 4, 0 ); - - } // end of for(;;) - - // At this point we have room and the lock - stick them in. - channel = pCh->infl.hd.i2sChannel; - pInsert = &pBuf[stuffIndex]; // Pointer to start of packet - pDest = CMD_OF(pInsert); // Pointer to start of command - - // When we start counting, the block is the size of the header - for (blocksize = sizeof(i2CmdHeader), count = nCommands, - lastended = 0, ppCs = &pCs0; - count; - count--, ppCs++) - { - pCs = *ppCs; // Points to command protocol structure - - // If this is a bookmark request command, post the fact that a bookmark - // request is pending. NOTE THIS TRICK ONLY WORKS BECAUSE CMD_BMARK_REQ - // has no parameters! The more general solution would be to reference - // pCs->cmd[0]. - if (pCs == CMD_BMARK_REQ) { - pCh->bookMarks++; - - ip2trace (CHANN, ITRC_DRAIN, 30, 1, pCh->bookMarks ); - - } - cnt = pCs->length; - - // If this command would put us over the maximum block size or - // if the last command had to be at the end of a block, we end - // the existing block here and start a new one. - if ((blocksize + cnt > maxBlock) || lastended) { - - ip2trace (CHANN, ITRC_QUEUE, 5, 0 ); - - PTYPE_OF(pInsert) = type; - CHANNEL_OF(pInsert) = channel; - // count here does not include the header - CMD_COUNT_OF(pInsert) = blocksize - sizeof(i2CmdHeader); - stuffIndex += blocksize; - if(stuffIndex >= maxBuff) { - stuffIndex = 0; - pInsert = pBuf; - } - pInsert = &pBuf[stuffIndex]; // Pointer to start of next pkt - pDest = CMD_OF(pInsert); - blocksize = sizeof(i2CmdHeader); - } - // Now we know there is room for this one in the current block - - blocksize += cnt; // Total bytes in this command - pSource = pCs->cmd; // Copy the command into the buffer - while (cnt--) { - *pDest++ = *pSource++; - } - // If this command had to end a block, then we will make sure to account - // for it should there be any more blocks. - lastended = pCs->flags & END; - } // end for - // Clean up the final block by writing header, etc - - PTYPE_OF(pInsert) = type; - CHANNEL_OF(pInsert) = channel; - // count here does not include the header - CMD_COUNT_OF(pInsert) = blocksize - sizeof(i2CmdHeader); - stuffIndex += blocksize; - if(stuffIndex >= maxBuff) { - stuffIndex = 0; - pInsert = pBuf; - } - // Updates the index, and post the need for service. When adding these to - // the queue of channels, we turn off the interrupt while doing so, - // because at interrupt level we might want to push a channel back to the - // end of the queue. - switch(type) - { - case PTYPE_INLINE: - pCh->Obuf_stuff = stuffIndex; // Store buffer pointer - write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); - - pB->debugInlineQueued++; - // Add the channel pointer to list of channels needing service (first - // come...), if it's not already there. - i2QueueNeeds(pB, pCh, NEED_INLINE); - break; - - case PTYPE_BYPASS: - pCh->Cbuf_stuff = stuffIndex; // Store buffer pointer - write_unlock_irqrestore(&pCh->Cbuf_spinlock, flags); - - pB->debugBypassQueued++; - // Add the channel pointer to list of channels needing service (first - // come...), if it's not already there. - i2QueueNeeds(pB, pCh, NEED_BYPASS); - break; - } - - ip2trace (CHANN, ITRC_QUEUE, ITRC_RETURN, 1, nCommands ); - - return nCommands; // Good status: number of commands sent -} - -//****************************************************************************** -// Function: i2GetStatus(pCh,resetBits) -// Parameters: Pointer to a channel structure -// Bit map of status bits to clear -// Returns: Bit map of current status bits -// -// Description: -// Returns the state of data set signals, and whether a break has been received, -// (see i2lib.h for bit-mapped result). resetBits is a bit-map of any status -// bits to be cleared: I2_BRK, I2_PAR, I2_FRA, I2_OVR,... These are cleared -// AFTER the condition is passed. If pCh does not point to a valid channel, -// returns -1 (which would be impossible otherwise. -//****************************************************************************** -static int -i2GetStatus(i2ChanStrPtr pCh, int resetBits) -{ - unsigned short status; - i2eBordStrPtr pB; - - ip2trace (CHANN, ITRC_STATUS, ITRC_ENTER, 2, pCh->dataSetIn, resetBits ); - - // Make sure the channel exists, otherwise do nothing */ - if ( !i2Validate ( pCh ) ) - return -1; - - pB = pCh->pMyBord; - - status = pCh->dataSetIn; - - // Clear any specified error bits: but note that only actual error bits can - // be cleared, regardless of the value passed. - if (resetBits) - { - pCh->dataSetIn &= ~(resetBits & (I2_BRK | I2_PAR | I2_FRA | I2_OVR)); - pCh->dataSetIn &= ~(I2_DDCD | I2_DCTS | I2_DDSR | I2_DRI); - } - - ip2trace (CHANN, ITRC_STATUS, ITRC_RETURN, 1, pCh->dataSetIn ); - - return status; -} - -//****************************************************************************** -// Function: i2Input(pChpDest,count) -// Parameters: Pointer to a channel structure -// Pointer to data buffer -// Number of bytes to read -// Returns: Number of bytes read, or -1 for error -// -// Description: -// Strips data from the input buffer and writes it to pDest. If there is a -// collosal blunder, (invalid structure pointers or the like), returns -1. -// Otherwise, returns the number of bytes read. -//****************************************************************************** -static int -i2Input(i2ChanStrPtr pCh) -{ - int amountToMove; - unsigned short stripIndex; - int count; - unsigned long flags = 0; - - ip2trace (CHANN, ITRC_INPUT, ITRC_ENTER, 0); - - // Ensure channel structure seems real - if ( !i2Validate( pCh ) ) { - count = -1; - goto i2Input_exit; - } - write_lock_irqsave(&pCh->Ibuf_spinlock, flags); - - // initialize some accelerators and private copies - stripIndex = pCh->Ibuf_strip; - - count = pCh->Ibuf_stuff - stripIndex; - - // If buffer is empty or requested data count was 0, (trivial case) return - // without any further thought. - if ( count == 0 ) { - write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - goto i2Input_exit; - } - // Adjust for buffer wrap - if ( count < 0 ) { - count += IBUF_SIZE; - } - // Don't give more than can be taken by the line discipline - amountToMove = pCh->pTTY->receive_room; - if (count > amountToMove) { - count = amountToMove; - } - // How much could we copy without a wrap? - amountToMove = IBUF_SIZE - stripIndex; - - if (amountToMove > count) { - amountToMove = count; - } - // Move the first block - pCh->pTTY->ldisc->ops->receive_buf( pCh->pTTY, - &(pCh->Ibuf[stripIndex]), NULL, amountToMove ); - // If we needed to wrap, do the second data move - if (count > amountToMove) { - pCh->pTTY->ldisc->ops->receive_buf( pCh->pTTY, - pCh->Ibuf, NULL, count - amountToMove ); - } - // Bump and wrap the stripIndex all at once by the amount of data read. This - // method is good regardless of whether the data was in one or two pieces. - stripIndex += count; - if (stripIndex >= IBUF_SIZE) { - stripIndex -= IBUF_SIZE; - } - pCh->Ibuf_strip = stripIndex; - - // Update our flow control information and possibly queue ourselves to send - // it, depending on how much data has been stripped since the last time a - // packet was sent. - pCh->infl.asof += count; - - if ((pCh->sinceLastFlow += count) >= pCh->whenSendFlow) { - pCh->sinceLastFlow -= pCh->whenSendFlow; - write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - i2QueueNeeds(pCh->pMyBord, pCh, NEED_FLOW); - } else { - write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - } - -i2Input_exit: - - ip2trace (CHANN, ITRC_INPUT, ITRC_RETURN, 1, count); - - return count; -} - -//****************************************************************************** -// Function: i2InputFlush(pCh) -// Parameters: Pointer to a channel structure -// Returns: Number of bytes stripped, or -1 for error -// -// Description: -// Strips any data from the input buffer. If there is a collosal blunder, -// (invalid structure pointers or the like), returns -1. Otherwise, returns the -// number of bytes stripped. -//****************************************************************************** -static int -i2InputFlush(i2ChanStrPtr pCh) -{ - int count; - unsigned long flags; - - // Ensure channel structure seems real - if ( !i2Validate ( pCh ) ) - return -1; - - ip2trace (CHANN, ITRC_INPUT, 10, 0); - - write_lock_irqsave(&pCh->Ibuf_spinlock, flags); - count = pCh->Ibuf_stuff - pCh->Ibuf_strip; - - // Adjust for buffer wrap - if (count < 0) { - count += IBUF_SIZE; - } - - // Expedient way to zero out the buffer - pCh->Ibuf_strip = pCh->Ibuf_stuff; - - - // Update our flow control information and possibly queue ourselves to send - // it, depending on how much data has been stripped since the last time a - // packet was sent. - - pCh->infl.asof += count; - - if ( (pCh->sinceLastFlow += count) >= pCh->whenSendFlow ) - { - pCh->sinceLastFlow -= pCh->whenSendFlow; - write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - i2QueueNeeds(pCh->pMyBord, pCh, NEED_FLOW); - } else { - write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - } - - ip2trace (CHANN, ITRC_INPUT, 19, 1, count); - - return count; -} - -//****************************************************************************** -// Function: i2InputAvailable(pCh) -// Parameters: Pointer to a channel structure -// Returns: Number of bytes available, or -1 for error -// -// Description: -// If there is a collosal blunder, (invalid structure pointers or the like), -// returns -1. Otherwise, returns the number of bytes stripped. Otherwise, -// returns the number of bytes available in the buffer. -//****************************************************************************** -#if 0 -static int -i2InputAvailable(i2ChanStrPtr pCh) -{ - int count; - - // Ensure channel structure seems real - if ( !i2Validate ( pCh ) ) return -1; - - - // initialize some accelerators and private copies - read_lock_irqsave(&pCh->Ibuf_spinlock, flags); - count = pCh->Ibuf_stuff - pCh->Ibuf_strip; - read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - - // Adjust for buffer wrap - if (count < 0) - { - count += IBUF_SIZE; - } - - return count; -} -#endif - -//****************************************************************************** -// Function: i2Output(pCh, pSource, count) -// Parameters: Pointer to channel structure -// Pointer to source data -// Number of bytes to send -// Returns: Number of bytes sent, or -1 for error -// -// Description: -// Queues the data at pSource to be sent as data packets to the board. If there -// is a collosal blunder, (invalid structure pointers or the like), returns -1. -// Otherwise, returns the number of bytes written. What if there is not enough -// room for all the data? If pCh->channelOptions & CO_NBLOCK_WRITE is set, then -// we transfer as many characters as we can now, then return. If this bit is -// clear (default), routine will spin along until all the data is buffered. -// Should this occur, the 1-ms delay routine is called while waiting to avoid -// applications that one cannot break out of. -//****************************************************************************** -static int -i2Output(i2ChanStrPtr pCh, const char *pSource, int count) -{ - i2eBordStrPtr pB; - unsigned char *pInsert; - int amountToMove; - int countOriginal = count; - unsigned short channel; - unsigned short stuffIndex; - unsigned long flags; - - int bailout = 10; - - ip2trace (CHANN, ITRC_OUTPUT, ITRC_ENTER, 2, count, 0 ); - - // Ensure channel structure seems real - if ( !i2Validate ( pCh ) ) - return -1; - - // initialize some accelerators and private copies - pB = pCh->pMyBord; - channel = pCh->infl.hd.i2sChannel; - - // If the board has gone fatal, return bad, and also hit the trap routine if - // it exists. - if (pB->i2eFatal) { - if (pB->i2eFatalTrap) { - (*(pB)->i2eFatalTrap)(pB); - } - return -1; - } - // Proceed as though we would do everything - while ( count > 0 ) { - - // How much room in output buffer is there? - read_lock_irqsave(&pCh->Obuf_spinlock, flags); - amountToMove = pCh->Obuf_strip - pCh->Obuf_stuff - 1; - read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); - if (amountToMove < 0) { - amountToMove += OBUF_SIZE; - } - // Subtract off the headers size and see how much room there is for real - // data. If this is negative, we will discover later. - amountToMove -= sizeof (i2DataHeader); - - // Don't move more (now) than can go in a single packet - if ( amountToMove > (int)(MAX_OBUF_BLOCK - sizeof(i2DataHeader)) ) { - amountToMove = MAX_OBUF_BLOCK - sizeof(i2DataHeader); - } - // Don't move more than the count we were given - if (amountToMove > count) { - amountToMove = count; - } - // Now we know how much we must move: NB because the ring buffers have - // an overflow area at the end, we needn't worry about wrapping in the - // middle of a packet. - -// Small WINDOW here with no LOCK but I can't call Flush with LOCK -// We would be flushing (or ending flush) anyway - - ip2trace (CHANN, ITRC_OUTPUT, 10, 1, amountToMove ); - - if ( !(pCh->flush_flags && i2RetryFlushOutput(pCh) ) - && amountToMove > 0 ) - { - write_lock_irqsave(&pCh->Obuf_spinlock, flags); - stuffIndex = pCh->Obuf_stuff; - - // Had room to move some data: don't know whether the block size, - // buffer space, or what was the limiting factor... - pInsert = &(pCh->Obuf[stuffIndex]); - - // Set up the header - CHANNEL_OF(pInsert) = channel; - PTYPE_OF(pInsert) = PTYPE_DATA; - TAG_OF(pInsert) = 0; - ID_OF(pInsert) = ID_ORDINARY_DATA; - DATA_COUNT_OF(pInsert) = amountToMove; - - // Move the data - memcpy( (char*)(DATA_OF(pInsert)), pSource, amountToMove ); - // Adjust pointers and indices - pSource += amountToMove; - pCh->Obuf_char_count += amountToMove; - stuffIndex += amountToMove + sizeof(i2DataHeader); - count -= amountToMove; - - if (stuffIndex >= OBUF_SIZE) { - stuffIndex = 0; - } - pCh->Obuf_stuff = stuffIndex; - - write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); - - ip2trace (CHANN, ITRC_OUTPUT, 13, 1, stuffIndex ); - - } else { - - // Cannot move data - // becuz we need to stuff a flush - // or amount to move is <= 0 - - ip2trace(CHANN, ITRC_OUTPUT, 14, 3, - amountToMove, pB->i2eFifoRemains, - pB->i2eWaitingForEmptyFifo ); - - // Put this channel back on queue - // this ultimatly gets more data or wakes write output - i2QueueNeeds(pB, pCh, NEED_INLINE); - - if ( pB->i2eWaitingForEmptyFifo ) { - - ip2trace (CHANN, ITRC_OUTPUT, 16, 0 ); - - // or schedule - if (!in_interrupt()) { - - ip2trace (CHANN, ITRC_OUTPUT, 61, 0 ); - - schedule_timeout_interruptible(2); - if (signal_pending(current)) { - break; - } - continue; - } else { - - ip2trace (CHANN, ITRC_OUTPUT, 62, 0 ); - - // let interrupt in = WAS restore_flags() - // We hold no lock nor is irq off anymore??? - - break; - } - break; // from while(count) - } - else if ( pB->i2eFifoRemains < 32 && !pB->i2eTxMailEmpty ( pB ) ) - { - ip2trace (CHANN, ITRC_OUTPUT, 19, 2, - pB->i2eFifoRemains, - pB->i2eTxMailEmpty ); - - break; // from while(count) - } else if ( pCh->channelNeeds & NEED_CREDIT ) { - - ip2trace (CHANN, ITRC_OUTPUT, 22, 0 ); - - break; // from while(count) - } else if ( --bailout) { - - // Try to throw more things (maybe not us) in the fifo if we're - // not already waiting for it. - - ip2trace (CHANN, ITRC_OUTPUT, 20, 0 ); - - serviceOutgoingFifo(pB); - //break; CONTINUE; - } else { - ip2trace (CHANN, ITRC_OUTPUT, 21, 3, - pB->i2eFifoRemains, - pB->i2eOutMailWaiting, - pB->i2eWaitingForEmptyFifo ); - - break; // from while(count) - } - } - } // End of while(count) - - i2QueueNeeds(pB, pCh, NEED_INLINE); - - // We drop through either when the count expires, or when there is some - // count left, but there was a non-blocking write. - if (countOriginal > count) { - - ip2trace (CHANN, ITRC_OUTPUT, 17, 2, countOriginal, count ); - - serviceOutgoingFifo( pB ); - } - - ip2trace (CHANN, ITRC_OUTPUT, ITRC_RETURN, 2, countOriginal, count ); - - return countOriginal - count; -} - -//****************************************************************************** -// Function: i2FlushOutput(pCh) -// Parameters: Pointer to a channel structure -// Returns: Nothing -// -// Description: -// Sends bypass command to start flushing (waiting possibly forever until there -// is room), then sends inline command to stop flushing output, (again waiting -// possibly forever). -//****************************************************************************** -static inline void -i2FlushOutput(i2ChanStrPtr pCh) -{ - - ip2trace (CHANN, ITRC_FLUSH, 1, 1, pCh->flush_flags ); - - if (pCh->flush_flags) - return; - - if ( 1 != i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_STARTFL) ) { - pCh->flush_flags = STARTFL_FLAG; // Failed - flag for later - - ip2trace (CHANN, ITRC_FLUSH, 2, 0 ); - - } else if ( 1 != i2QueueCommands(PTYPE_INLINE, pCh, 0, 1, CMD_STOPFL) ) { - pCh->flush_flags = STOPFL_FLAG; // Failed - flag for later - - ip2trace (CHANN, ITRC_FLUSH, 3, 0 ); - } -} - -static int -i2RetryFlushOutput(i2ChanStrPtr pCh) -{ - int old_flags = pCh->flush_flags; - - ip2trace (CHANN, ITRC_FLUSH, 14, 1, old_flags ); - - pCh->flush_flags = 0; // Clear flag so we can avoid recursion - // and queue the commands - - if ( old_flags & STARTFL_FLAG ) { - if ( 1 == i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_STARTFL) ) { - old_flags = STOPFL_FLAG; //Success - send stop flush - } else { - old_flags = STARTFL_FLAG; //Failure - Flag for retry later - } - - ip2trace (CHANN, ITRC_FLUSH, 15, 1, old_flags ); - - } - if ( old_flags & STOPFL_FLAG ) { - if (1 == i2QueueCommands(PTYPE_INLINE, pCh, 0, 1, CMD_STOPFL)) { - old_flags = 0; // Success - clear flags - } - - ip2trace (CHANN, ITRC_FLUSH, 16, 1, old_flags ); - } - pCh->flush_flags = old_flags; - - ip2trace (CHANN, ITRC_FLUSH, 17, 1, old_flags ); - - return old_flags; -} - -//****************************************************************************** -// Function: i2DrainOutput(pCh,timeout) -// Parameters: Pointer to a channel structure -// Maximum period to wait -// Returns: ? -// -// Description: -// Uses the bookmark request command to ask the board to send a bookmark back as -// soon as all the data is completely sent. -//****************************************************************************** -static void -i2DrainWakeup(unsigned long d) -{ - i2ChanStrPtr pCh = (i2ChanStrPtr)d; - - ip2trace (CHANN, ITRC_DRAIN, 10, 1, pCh->BookmarkTimer.expires ); - - pCh->BookmarkTimer.expires = 0; - wake_up_interruptible( &pCh->pBookmarkWait ); -} - -static void -i2DrainOutput(i2ChanStrPtr pCh, int timeout) -{ - wait_queue_t wait; - i2eBordStrPtr pB; - - ip2trace (CHANN, ITRC_DRAIN, ITRC_ENTER, 1, pCh->BookmarkTimer.expires); - - pB = pCh->pMyBord; - // If the board has gone fatal, return bad, - // and also hit the trap routine if it exists. - if (pB->i2eFatal) { - if (pB->i2eFatalTrap) { - (*(pB)->i2eFatalTrap)(pB); - } - return; - } - if ((timeout > 0) && (pCh->BookmarkTimer.expires == 0 )) { - // One per customer (channel) - setup_timer(&pCh->BookmarkTimer, i2DrainWakeup, - (unsigned long)pCh); - - ip2trace (CHANN, ITRC_DRAIN, 1, 1, pCh->BookmarkTimer.expires ); - - mod_timer(&pCh->BookmarkTimer, jiffies + timeout); - } - - i2QueueCommands( PTYPE_INLINE, pCh, -1, 1, CMD_BMARK_REQ ); - - init_waitqueue_entry(&wait, current); - add_wait_queue(&(pCh->pBookmarkWait), &wait); - set_current_state( TASK_INTERRUPTIBLE ); - - serviceOutgoingFifo( pB ); - - schedule(); // Now we take our interruptible sleep on - - // Clean up the queue - set_current_state( TASK_RUNNING ); - remove_wait_queue(&(pCh->pBookmarkWait), &wait); - - // if expires == 0 then timer poped, then do not need to del_timer - if ((timeout > 0) && pCh->BookmarkTimer.expires && - time_before(jiffies, pCh->BookmarkTimer.expires)) { - del_timer( &(pCh->BookmarkTimer) ); - pCh->BookmarkTimer.expires = 0; - - ip2trace (CHANN, ITRC_DRAIN, 3, 1, pCh->BookmarkTimer.expires ); - - } - ip2trace (CHANN, ITRC_DRAIN, ITRC_RETURN, 1, pCh->BookmarkTimer.expires ); - return; -} - -//****************************************************************************** -// Function: i2OutputFree(pCh) -// Parameters: Pointer to a channel structure -// Returns: Space in output buffer -// -// Description: -// Returns -1 if very gross error. Otherwise returns the amount of bytes still -// free in the output buffer. -//****************************************************************************** -static int -i2OutputFree(i2ChanStrPtr pCh) -{ - int amountToMove; - unsigned long flags; - - // Ensure channel structure seems real - if ( !i2Validate ( pCh ) ) { - return -1; - } - read_lock_irqsave(&pCh->Obuf_spinlock, flags); - amountToMove = pCh->Obuf_strip - pCh->Obuf_stuff - 1; - read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); - - if (amountToMove < 0) { - amountToMove += OBUF_SIZE; - } - // If this is negative, we will discover later - amountToMove -= sizeof(i2DataHeader); - - return (amountToMove < 0) ? 0 : amountToMove; -} -static void - -ip2_owake( PTTY tp) -{ - i2ChanStrPtr pCh; - - if (tp == NULL) return; - - pCh = tp->driver_data; - - ip2trace (CHANN, ITRC_SICMD, 10, 2, tp->flags, - (1 << TTY_DO_WRITE_WAKEUP) ); - - tty_wakeup(tp); -} - -static inline void -set_baud_params(i2eBordStrPtr pB) -{ - int i,j; - i2ChanStrPtr *pCh; - - pCh = (i2ChanStrPtr *) pB->i2eChannelPtr; - - for (i = 0; i < ABS_MAX_BOXES; i++) { - if (pB->channelBtypes.bid_value[i]) { - if (BID_HAS_654(pB->channelBtypes.bid_value[i])) { - for (j = 0; j < ABS_BIGGEST_BOX; j++) { - if (pCh[i*16+j] == NULL) - break; - (pCh[i*16+j])->BaudBase = 921600; // MAX for ST654 - (pCh[i*16+j])->BaudDivisor = 96; - } - } else { // has cirrus cd1400 - for (j = 0; j < ABS_BIGGEST_BOX; j++) { - if (pCh[i*16+j] == NULL) - break; - (pCh[i*16+j])->BaudBase = 115200; // MAX for CD1400 - (pCh[i*16+j])->BaudDivisor = 12; - } - } - } - } -} - -//****************************************************************************** -// Function: i2StripFifo(pB) -// Parameters: Pointer to a board structure -// Returns: ? -// -// Description: -// Strips all the available data from the incoming FIFO, identifies the type of -// packet, and either buffers the data or does what needs to be done. -// -// Note there is no overflow checking here: if the board sends more data than it -// ought to, we will not detect it here, but blindly overflow... -//****************************************************************************** - -// A buffer for reading in blocks for unknown channels -static unsigned char junkBuffer[IBUF_SIZE]; - -// A buffer to read in a status packet. Because of the size of the count field -// for these things, the maximum packet size must be less than MAX_CMD_PACK_SIZE -static unsigned char cmdBuffer[MAX_CMD_PACK_SIZE + 4]; - -// This table changes the bit order from MSR order given by STAT_MODEM packet to -// status bits used in our library. -static char xlatDss[16] = { -0 | 0 | 0 | 0 , -0 | 0 | 0 | I2_CTS , -0 | 0 | I2_DSR | 0 , -0 | 0 | I2_DSR | I2_CTS , -0 | I2_RI | 0 | 0 , -0 | I2_RI | 0 | I2_CTS , -0 | I2_RI | I2_DSR | 0 , -0 | I2_RI | I2_DSR | I2_CTS , -I2_DCD | 0 | 0 | 0 , -I2_DCD | 0 | 0 | I2_CTS , -I2_DCD | 0 | I2_DSR | 0 , -I2_DCD | 0 | I2_DSR | I2_CTS , -I2_DCD | I2_RI | 0 | 0 , -I2_DCD | I2_RI | 0 | I2_CTS , -I2_DCD | I2_RI | I2_DSR | 0 , -I2_DCD | I2_RI | I2_DSR | I2_CTS }; - -static inline void -i2StripFifo(i2eBordStrPtr pB) -{ - i2ChanStrPtr pCh; - int channel; - int count; - unsigned short stuffIndex; - int amountToRead; - unsigned char *pc, *pcLimit; - unsigned char uc; - unsigned char dss_change; - unsigned long bflags,cflags; - -// ip2trace (ITRC_NO_PORT, ITRC_SFIFO, ITRC_ENTER, 0 ); - - while (I2_HAS_INPUT(pB)) { -// ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 2, 0 ); - - // Process packet from fifo a one atomic unit - write_lock_irqsave(&pB->read_fifo_spinlock, bflags); - - // The first word (or two bytes) will have channel number and type of - // packet, possibly other information - pB->i2eLeadoffWord[0] = iiReadWord(pB); - - switch(PTYPE_OF(pB->i2eLeadoffWord)) - { - case PTYPE_DATA: - pB->got_input = 1; - -// ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 3, 0 ); - - channel = CHANNEL_OF(pB->i2eLeadoffWord); /* Store channel */ - count = iiReadWord(pB); /* Count is in the next word */ - -// NEW: Check the count for sanity! Should the hardware fail, our death -// is more pleasant. While an oversize channel is acceptable (just more -// than the driver supports), an over-length count clearly means we are -// sick! - if ( ((unsigned int)count) > IBUF_SIZE ) { - pB->i2eFatal = 2; - write_unlock_irqrestore(&pB->read_fifo_spinlock, - bflags); - return; /* Bail out ASAP */ - } - // Channel is illegally big ? - if ((channel >= pB->i2eChannelCnt) || - (NULL==(pCh = ((i2ChanStrPtr*)pB->i2eChannelPtr)[channel]))) - { - iiReadBuf(pB, junkBuffer, count); - write_unlock_irqrestore(&pB->read_fifo_spinlock, - bflags); - break; /* From switch: ready for next packet */ - } - - // Channel should be valid, then - - // If this is a hot-key, merely post its receipt for now. These are - // always supposed to be 1-byte packets, so we won't even check the - // count. Also we will post an acknowledgement to the board so that - // more data can be forthcoming. Note that we are not trying to use - // these sequences in this driver, merely to robustly ignore them. - if(ID_OF(pB->i2eLeadoffWord) == ID_HOT_KEY) - { - pCh->hotKeyIn = iiReadWord(pB) & 0xff; - write_unlock_irqrestore(&pB->read_fifo_spinlock, - bflags); - i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_HOTACK); - break; /* From the switch: ready for next packet */ - } - - // Normal data! We crudely assume there is room for the data in our - // buffer because the board wouldn't have exceeded his credit limit. - write_lock_irqsave(&pCh->Ibuf_spinlock, cflags); - // We have 2 locks now - stuffIndex = pCh->Ibuf_stuff; - amountToRead = IBUF_SIZE - stuffIndex; - if (amountToRead > count) - amountToRead = count; - - // stuffIndex would have been already adjusted so there would - // always be room for at least one, and count is always at least - // one. - - iiReadBuf(pB, &(pCh->Ibuf[stuffIndex]), amountToRead); - pCh->icount.rx += amountToRead; - - // Update the stuffIndex by the amount of data moved. Note we could - // never ask for more data than would just fit. However, we might - // have read in one more byte than we wanted because the read - // rounds up to even bytes. If this byte is on the end of the - // packet, and is padding, we ignore it. If the byte is part of - // the actual data, we need to move it. - - stuffIndex += amountToRead; - - if (stuffIndex >= IBUF_SIZE) { - if ((amountToRead & 1) && (count > amountToRead)) { - pCh->Ibuf[0] = pCh->Ibuf[IBUF_SIZE]; - amountToRead++; - stuffIndex = 1; - } else { - stuffIndex = 0; - } - } - - // If there is anything left over, read it as well - if (count > amountToRead) { - amountToRead = count - amountToRead; - iiReadBuf(pB, &(pCh->Ibuf[stuffIndex]), amountToRead); - pCh->icount.rx += amountToRead; - stuffIndex += amountToRead; - } - - // Update stuff index - pCh->Ibuf_stuff = stuffIndex; - write_unlock_irqrestore(&pCh->Ibuf_spinlock, cflags); - write_unlock_irqrestore(&pB->read_fifo_spinlock, - bflags); - -#ifdef USE_IQ - schedule_work(&pCh->tqueue_input); -#else - do_input(&pCh->tqueue_input); -#endif - - // Note we do not need to maintain any flow-control credits at this - // time: if we were to increment .asof and decrement .room, there - // would be no net effect. Instead, when we strip data, we will - // increment .asof and leave .room unchanged. - - break; // From switch: ready for next packet - - case PTYPE_STATUS: - ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 4, 0 ); - - count = CMD_COUNT_OF(pB->i2eLeadoffWord); - - iiReadBuf(pB, cmdBuffer, count); - // We can release early with buffer grab - write_unlock_irqrestore(&pB->read_fifo_spinlock, - bflags); - - pc = cmdBuffer; - pcLimit = &(cmdBuffer[count]); - - while (pc < pcLimit) { - channel = *pc++; - - ip2trace (channel, ITRC_SFIFO, 7, 2, channel, *pc ); - - /* check for valid channel */ - if (channel < pB->i2eChannelCnt - && - (pCh = (((i2ChanStrPtr*)pB->i2eChannelPtr)[channel])) != NULL - ) - { - dss_change = 0; - - switch (uc = *pc++) - { - /* Breaks and modem signals are easy: just update status */ - case STAT_CTS_UP: - if ( !(pCh->dataSetIn & I2_CTS) ) - { - pCh->dataSetIn |= I2_DCTS; - pCh->icount.cts++; - dss_change = 1; - } - pCh->dataSetIn |= I2_CTS; - break; - - case STAT_CTS_DN: - if ( pCh->dataSetIn & I2_CTS ) - { - pCh->dataSetIn |= I2_DCTS; - pCh->icount.cts++; - dss_change = 1; - } - pCh->dataSetIn &= ~I2_CTS; - break; - - case STAT_DCD_UP: - ip2trace (channel, ITRC_MODEM, 1, 1, pCh->dataSetIn ); - - if ( !(pCh->dataSetIn & I2_DCD) ) - { - ip2trace (CHANN, ITRC_MODEM, 2, 0 ); - pCh->dataSetIn |= I2_DDCD; - pCh->icount.dcd++; - dss_change = 1; - } - pCh->dataSetIn |= I2_DCD; - - ip2trace (channel, ITRC_MODEM, 3, 1, pCh->dataSetIn ); - break; - - case STAT_DCD_DN: - ip2trace (channel, ITRC_MODEM, 4, 1, pCh->dataSetIn ); - if ( pCh->dataSetIn & I2_DCD ) - { - ip2trace (channel, ITRC_MODEM, 5, 0 ); - pCh->dataSetIn |= I2_DDCD; - pCh->icount.dcd++; - dss_change = 1; - } - pCh->dataSetIn &= ~I2_DCD; - - ip2trace (channel, ITRC_MODEM, 6, 1, pCh->dataSetIn ); - break; - - case STAT_DSR_UP: - if ( !(pCh->dataSetIn & I2_DSR) ) - { - pCh->dataSetIn |= I2_DDSR; - pCh->icount.dsr++; - dss_change = 1; - } - pCh->dataSetIn |= I2_DSR; - break; - - case STAT_DSR_DN: - if ( pCh->dataSetIn & I2_DSR ) - { - pCh->dataSetIn |= I2_DDSR; - pCh->icount.dsr++; - dss_change = 1; - } - pCh->dataSetIn &= ~I2_DSR; - break; - - case STAT_RI_UP: - if ( !(pCh->dataSetIn & I2_RI) ) - { - pCh->dataSetIn |= I2_DRI; - pCh->icount.rng++; - dss_change = 1; - } - pCh->dataSetIn |= I2_RI ; - break; - - case STAT_RI_DN: - // to be compat with serial.c - //if ( pCh->dataSetIn & I2_RI ) - //{ - // pCh->dataSetIn |= I2_DRI; - // pCh->icount.rng++; - // dss_change = 1; - //} - pCh->dataSetIn &= ~I2_RI ; - break; - - case STAT_BRK_DET: - pCh->dataSetIn |= I2_BRK; - pCh->icount.brk++; - dss_change = 1; - break; - - // Bookmarks? one less request we're waiting for - case STAT_BMARK: - pCh->bookMarks--; - if (pCh->bookMarks <= 0 ) { - pCh->bookMarks = 0; - wake_up_interruptible( &pCh->pBookmarkWait ); - - ip2trace (channel, ITRC_DRAIN, 20, 1, pCh->BookmarkTimer.expires ); - } - break; - - // Flow control packets? Update the new credits, and if - // someone was waiting for output, queue him up again. - case STAT_FLOW: - pCh->outfl.room = - ((flowStatPtr)pc)->room - - (pCh->outfl.asof - ((flowStatPtr)pc)->asof); - - ip2trace (channel, ITRC_STFLW, 1, 1, pCh->outfl.room ); - - if (pCh->channelNeeds & NEED_CREDIT) - { - ip2trace (channel, ITRC_STFLW, 2, 1, pCh->channelNeeds); - - pCh->channelNeeds &= ~NEED_CREDIT; - i2QueueNeeds(pB, pCh, NEED_INLINE); - if ( pCh->pTTY ) - ip2_owake(pCh->pTTY); - } - - ip2trace (channel, ITRC_STFLW, 3, 1, pCh->channelNeeds); - - pc += sizeof(flowStat); - break; - - /* Special packets: */ - /* Just copy the information into the channel structure */ - - case STAT_STATUS: - - pCh->channelStatus = *((debugStatPtr)pc); - pc += sizeof(debugStat); - break; - - case STAT_TXCNT: - - pCh->channelTcount = *((cntStatPtr)pc); - pc += sizeof(cntStat); - break; - - case STAT_RXCNT: - - pCh->channelRcount = *((cntStatPtr)pc); - pc += sizeof(cntStat); - break; - - case STAT_BOXIDS: - pB->channelBtypes = *((bidStatPtr)pc); - pc += sizeof(bidStat); - set_baud_params(pB); - break; - - case STAT_HWFAIL: - i2QueueCommands (PTYPE_INLINE, pCh, 0, 1, CMD_HW_TEST); - pCh->channelFail = *((failStatPtr)pc); - pc += sizeof(failStat); - break; - - /* No explicit match? then - * Might be an error packet... - */ - default: - switch (uc & STAT_MOD_ERROR) - { - case STAT_ERROR: - if (uc & STAT_E_PARITY) { - pCh->dataSetIn |= I2_PAR; - pCh->icount.parity++; - } - if (uc & STAT_E_FRAMING){ - pCh->dataSetIn |= I2_FRA; - pCh->icount.frame++; - } - if (uc & STAT_E_OVERRUN){ - pCh->dataSetIn |= I2_OVR; - pCh->icount.overrun++; - } - break; - - case STAT_MODEM: - // the answer to DSS_NOW request (not change) - pCh->dataSetIn = (pCh->dataSetIn - & ~(I2_RI | I2_CTS | I2_DCD | I2_DSR) ) - | xlatDss[uc & 0xf]; - wake_up_interruptible ( &pCh->dss_now_wait ); - default: - break; - } - } /* End of switch on status type */ - if (dss_change) { -#ifdef USE_IQ - schedule_work(&pCh->tqueue_status); -#else - do_status(&pCh->tqueue_status); -#endif - } - } - else /* Or else, channel is invalid */ - { - // Even though the channel is invalid, we must test the - // status to see how much additional data it has (to be - // skipped) - switch (*pc++) - { - case STAT_FLOW: - pc += 4; /* Skip the data */ - break; - - default: - break; - } - } - } // End of while (there is still some status packet left) - break; - - default: // Neither packet? should be impossible - ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 5, 1, - PTYPE_OF(pB->i2eLeadoffWord) ); - write_unlock_irqrestore(&pB->read_fifo_spinlock, - bflags); - - break; - } // End of switch on type of packets - } /*while(board I2_HAS_INPUT)*/ - - ip2trace (ITRC_NO_PORT, ITRC_SFIFO, ITRC_RETURN, 0 ); - - // Send acknowledgement to the board even if there was no data! - pB->i2eOutMailWaiting |= MB_IN_STRIPPED; - return; -} - -//****************************************************************************** -// Function: i2Write2Fifo(pB,address,count) -// Parameters: Pointer to a board structure, source address, byte count -// Returns: bytes written -// -// Description: -// Writes count bytes to board io address(implied) from source -// Adjusts count, leaves reserve for next time around bypass cmds -//****************************************************************************** -static int -i2Write2Fifo(i2eBordStrPtr pB, unsigned char *source, int count,int reserve) -{ - int rc = 0; - unsigned long flags; - write_lock_irqsave(&pB->write_fifo_spinlock, flags); - if (!pB->i2eWaitingForEmptyFifo) { - if (pB->i2eFifoRemains > (count+reserve)) { - pB->i2eFifoRemains -= count; - iiWriteBuf(pB, source, count); - pB->i2eOutMailWaiting |= MB_OUT_STUFFED; - rc = count; - } - } - write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); - return rc; -} -//****************************************************************************** -// Function: i2StuffFifoBypass(pB) -// Parameters: Pointer to a board structure -// Returns: Nothing -// -// Description: -// Stuffs as many bypass commands into the fifo as possible. This is simpler -// than stuffing data or inline commands to fifo, since we do not have -// flow-control to deal with. -//****************************************************************************** -static inline void -i2StuffFifoBypass(i2eBordStrPtr pB) -{ - i2ChanStrPtr pCh; - unsigned char *pRemove; - unsigned short stripIndex; - unsigned short packetSize; - unsigned short paddedSize; - unsigned short notClogged = 1; - unsigned long flags; - - int bailout = 1000; - - // Continue processing so long as there are entries, or there is room in the - // fifo. Each entry represents a channel with something to do. - while ( --bailout && notClogged && - (NULL != (pCh = i2DeQueueNeeds(pB,NEED_BYPASS)))) - { - write_lock_irqsave(&pCh->Cbuf_spinlock, flags); - stripIndex = pCh->Cbuf_strip; - - // as long as there are packets for this channel... - - while (stripIndex != pCh->Cbuf_stuff) { - pRemove = &(pCh->Cbuf[stripIndex]); - packetSize = CMD_COUNT_OF(pRemove) + sizeof(i2CmdHeader); - paddedSize = roundup(packetSize, 2); - - if (paddedSize > 0) { - if ( 0 == i2Write2Fifo(pB, pRemove, paddedSize,0)) { - notClogged = 0; /* fifo full */ - i2QueueNeeds(pB, pCh, NEED_BYPASS); // Put back on queue - break; // Break from the channel - } - } -#ifdef DEBUG_FIFO -WriteDBGBuf("BYPS", pRemove, paddedSize); -#endif /* DEBUG_FIFO */ - pB->debugBypassCount++; - - pRemove += packetSize; - stripIndex += packetSize; - if (stripIndex >= CBUF_SIZE) { - stripIndex = 0; - pRemove = pCh->Cbuf; - } - } - // Done with this channel. Move to next, removing this one from - // the queue of channels if we cleaned it out (i.e., didn't get clogged. - pCh->Cbuf_strip = stripIndex; - write_unlock_irqrestore(&pCh->Cbuf_spinlock, flags); - } // Either clogged or finished all the work - -#ifdef IP2DEBUG_TRACE - if ( !bailout ) { - ip2trace (ITRC_NO_PORT, ITRC_ERROR, 1, 0 ); - } -#endif -} - -//****************************************************************************** -// Function: i2StuffFifoFlow(pB) -// Parameters: Pointer to a board structure -// Returns: Nothing -// -// Description: -// Stuffs as many flow control packets into the fifo as possible. This is easier -// even than doing normal bypass commands, because there is always at most one -// packet, already assembled, for each channel. -//****************************************************************************** -static inline void -i2StuffFifoFlow(i2eBordStrPtr pB) -{ - i2ChanStrPtr pCh; - unsigned short paddedSize = roundup(sizeof(flowIn), 2); - - ip2trace (ITRC_NO_PORT, ITRC_SFLOW, ITRC_ENTER, 2, - pB->i2eFifoRemains, paddedSize ); - - // Continue processing so long as there are entries, or there is room in the - // fifo. Each entry represents a channel with something to do. - while ( (NULL != (pCh = i2DeQueueNeeds(pB,NEED_FLOW)))) { - pB->debugFlowCount++; - - // NO Chan LOCK needed ??? - if ( 0 == i2Write2Fifo(pB,(unsigned char *)&(pCh->infl),paddedSize,0)) { - break; - } -#ifdef DEBUG_FIFO - WriteDBGBuf("FLOW",(unsigned char *) &(pCh->infl), paddedSize); -#endif /* DEBUG_FIFO */ - - } // Either clogged or finished all the work - - ip2trace (ITRC_NO_PORT, ITRC_SFLOW, ITRC_RETURN, 0 ); -} - -//****************************************************************************** -// Function: i2StuffFifoInline(pB) -// Parameters: Pointer to a board structure -// Returns: Nothing -// -// Description: -// Stuffs as much data and inline commands into the fifo as possible. This is -// the most complex fifo-stuffing operation, since there if now the channel -// flow-control issue to deal with. -//****************************************************************************** -static inline void -i2StuffFifoInline(i2eBordStrPtr pB) -{ - i2ChanStrPtr pCh; - unsigned char *pRemove; - unsigned short stripIndex; - unsigned short packetSize; - unsigned short paddedSize; - unsigned short notClogged = 1; - unsigned short flowsize; - unsigned long flags; - - int bailout = 1000; - int bailout2; - - ip2trace (ITRC_NO_PORT, ITRC_SICMD, ITRC_ENTER, 3, pB->i2eFifoRemains, - pB->i2Dbuf_strip, pB->i2Dbuf_stuff ); - - // Continue processing so long as there are entries, or there is room in the - // fifo. Each entry represents a channel with something to do. - while ( --bailout && notClogged && - (NULL != (pCh = i2DeQueueNeeds(pB,NEED_INLINE))) ) - { - write_lock_irqsave(&pCh->Obuf_spinlock, flags); - stripIndex = pCh->Obuf_strip; - - ip2trace (CHANN, ITRC_SICMD, 3, 2, stripIndex, pCh->Obuf_stuff ); - - // as long as there are packets for this channel... - bailout2 = 1000; - while ( --bailout2 && stripIndex != pCh->Obuf_stuff) { - pRemove = &(pCh->Obuf[stripIndex]); - - // Must determine whether this be a data or command packet to - // calculate correctly the header size and the amount of - // flow-control credit this type of packet will use. - if (PTYPE_OF(pRemove) == PTYPE_DATA) { - flowsize = DATA_COUNT_OF(pRemove); - packetSize = flowsize + sizeof(i2DataHeader); - } else { - flowsize = CMD_COUNT_OF(pRemove); - packetSize = flowsize + sizeof(i2CmdHeader); - } - flowsize = CREDIT_USAGE(flowsize); - paddedSize = roundup(packetSize, 2); - - ip2trace (CHANN, ITRC_SICMD, 4, 2, pB->i2eFifoRemains, paddedSize ); - - // If we don't have enough credits from the board to send the data, - // flag the channel that we are waiting for flow control credit, and - // break out. This will clean up this channel and remove us from the - // queue of hot things to do. - - ip2trace (CHANN, ITRC_SICMD, 5, 2, pCh->outfl.room, flowsize ); - - if (pCh->outfl.room <= flowsize) { - // Do Not have the credits to send this packet. - i2QueueNeeds(pB, pCh, NEED_CREDIT); - notClogged = 0; - break; // So to do next channel - } - if ( (paddedSize > 0) - && ( 0 == i2Write2Fifo(pB, pRemove, paddedSize, 128))) { - // Do Not have room in fifo to send this packet. - notClogged = 0; - i2QueueNeeds(pB, pCh, NEED_INLINE); - break; // Break from the channel - } -#ifdef DEBUG_FIFO -WriteDBGBuf("DATA", pRemove, paddedSize); -#endif /* DEBUG_FIFO */ - pB->debugInlineCount++; - - pCh->icount.tx += flowsize; - // Update current credits - pCh->outfl.room -= flowsize; - pCh->outfl.asof += flowsize; - if (PTYPE_OF(pRemove) == PTYPE_DATA) { - pCh->Obuf_char_count -= DATA_COUNT_OF(pRemove); - } - pRemove += packetSize; - stripIndex += packetSize; - - ip2trace (CHANN, ITRC_SICMD, 6, 2, stripIndex, pCh->Obuf_strip); - - if (stripIndex >= OBUF_SIZE) { - stripIndex = 0; - pRemove = pCh->Obuf; - - ip2trace (CHANN, ITRC_SICMD, 7, 1, stripIndex ); - - } - } /* while */ - if ( !bailout2 ) { - ip2trace (CHANN, ITRC_ERROR, 3, 0 ); - } - // Done with this channel. Move to next, removing this one from the - // queue of channels if we cleaned it out (i.e., didn't get clogged. - pCh->Obuf_strip = stripIndex; - write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); - if ( notClogged ) - { - - ip2trace (CHANN, ITRC_SICMD, 8, 0 ); - - if ( pCh->pTTY ) { - ip2_owake(pCh->pTTY); - } - } - } // Either clogged or finished all the work - - if ( !bailout ) { - ip2trace (ITRC_NO_PORT, ITRC_ERROR, 4, 0 ); - } - - ip2trace (ITRC_NO_PORT, ITRC_SICMD, ITRC_RETURN, 1,pB->i2Dbuf_strip); -} - -//****************************************************************************** -// Function: serviceOutgoingFifo(pB) -// Parameters: Pointer to a board structure -// Returns: Nothing -// -// Description: -// Helper routine to put data in the outgoing fifo, if we aren't already waiting -// for something to be there. If the fifo has only room for a very little data, -// go head and hit the board with a mailbox hit immediately. Otherwise, it will -// have to happen later in the interrupt processing. Since this routine may be -// called both at interrupt and foreground time, we must turn off interrupts -// during the entire process. -//****************************************************************************** -static void -serviceOutgoingFifo(i2eBordStrPtr pB) -{ - // If we aren't currently waiting for the board to empty our fifo, service - // everything that is pending, in priority order (especially, Bypass before - // Inline). - if ( ! pB->i2eWaitingForEmptyFifo ) - { - i2StuffFifoFlow(pB); - i2StuffFifoBypass(pB); - i2StuffFifoInline(pB); - - iiSendPendingMail(pB); - } -} - -//****************************************************************************** -// Function: i2ServiceBoard(pB) -// Parameters: Pointer to a board structure -// Returns: Nothing -// -// Description: -// Normally this is called from interrupt level, but there is deliberately -// nothing in here specific to being called from interrupt level. All the -// hardware-specific, interrupt-specific things happen at the outer levels. -// -// For example, a timer interrupt could drive this routine for some sort of -// polled operation. The only requirement is that the programmer deal with any -// atomiticity/concurrency issues that result. -// -// This routine responds to the board's having sent mailbox information to the -// host (which would normally cause an interrupt). This routine reads the -// incoming mailbox. If there is no data in it, this board did not create the -// interrupt and/or has nothing to be done to it. (Except, if we have been -// waiting to write mailbox data to it, we may do so. -// -// Based on the value in the mailbox, we may take various actions. -// -// No checking here of pB validity: after all, it shouldn't have been called by -// the handler unless pB were on the list. -//****************************************************************************** -static inline int -i2ServiceBoard ( i2eBordStrPtr pB ) -{ - unsigned inmail; - unsigned long flags; - - - /* This should be atomic because of the way we are called... */ - if (NO_MAIL_HERE == ( inmail = pB->i2eStartMail ) ) { - inmail = iiGetMail(pB); - } - pB->i2eStartMail = NO_MAIL_HERE; - - ip2trace (ITRC_NO_PORT, ITRC_INTR, 2, 1, inmail ); - - if (inmail != NO_MAIL_HERE) { - // If the board has gone fatal, nothing to do but hit a bit that will - // alert foreground tasks to protest! - if ( inmail & MB_FATAL_ERROR ) { - pB->i2eFatal = 1; - goto exit_i2ServiceBoard; - } - - /* Assuming no fatal condition, we proceed to do work */ - if ( inmail & MB_IN_STUFFED ) { - pB->i2eFifoInInts++; - i2StripFifo(pB); /* There might be incoming packets */ - } - - if (inmail & MB_OUT_STRIPPED) { - pB->i2eFifoOutInts++; - write_lock_irqsave(&pB->write_fifo_spinlock, flags); - pB->i2eFifoRemains = pB->i2eFifoSize; - pB->i2eWaitingForEmptyFifo = 0; - write_unlock_irqrestore(&pB->write_fifo_spinlock, - flags); - - ip2trace (ITRC_NO_PORT, ITRC_INTR, 30, 1, pB->i2eFifoRemains ); - - } - serviceOutgoingFifo(pB); - } - - ip2trace (ITRC_NO_PORT, ITRC_INTR, 8, 0 ); - -exit_i2ServiceBoard: - - return 0; -} diff --git a/drivers/char/ip2/i2lib.h b/drivers/char/ip2/i2lib.h deleted file mode 100644 index e559e9bac06d..000000000000 --- a/drivers/char/ip2/i2lib.h +++ /dev/null @@ -1,351 +0,0 @@ -/******************************************************************************* -* -* (c) 1998 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Header file for high level library functions -* -*******************************************************************************/ -#ifndef I2LIB_H -#define I2LIB_H 1 -//------------------------------------------------------------------------------ -// I2LIB.H -// -// IntelliPort-II and IntelliPort-IIEX -// -// Defines, structure definitions, and external declarations for i2lib.c -//------------------------------------------------------------------------------ -//-------------------------------------- -// Mandatory Includes: -//-------------------------------------- -#include "ip2types.h" -#include "i2ellis.h" -#include "i2pack.h" -#include "i2cmd.h" -#include - -//------------------------------------------------------------------------------ -// i2ChanStr -- Channel Structure: -// Used to track per-channel information for the library routines using standard -// loadware. Note also, a pointer to an array of these structures is patched -// into the i2eBordStr (see i2ellis.h) -//------------------------------------------------------------------------------ -// -// If we make some limits on the maximum block sizes, we can avoid dealing with -// buffer wrap. The wrapping of the buffer is based on where the start of the -// packet is. Then there is always room for the packet contiguously. -// -// Maximum total length of an outgoing data or in-line command block. The limit -// of 36 on data is quite arbitrary and based more on DOS memory limitations -// than the board interface. However, for commands, the maximum packet length is -// MAX_CMD_PACK_SIZE, because the field size for the count is only a few bits -// (see I2PACK.H) in such packets. For data packets, the count field size is not -// the limiting factor. As of this writing, MAX_OBUF_BLOCK < MAX_CMD_PACK_SIZE, -// but be careful if wanting to modify either. -// -#define MAX_OBUF_BLOCK 36 - -// Another note on maximum block sizes: we are buffering packets here. Data is -// put into the buffer (if there is room) regardless of the credits from the -// board. The board sends new credits whenever it has removed from his buffers a -// number of characters equal to 80% of total buffer size. (Of course, the total -// buffer size is what is reported when the very first set of flow control -// status packets are received from the board. Therefore, to be robust, you must -// always fill the board to at least 80% of the current credit limit, else you -// might not give it enough to trigger a new report. These conditions are -// obtained here so long as the maximum output block size is less than 20% the -// size of the board's output buffers. This is true at present by "coincidence" -// or "infernal knowledge": the board's output buffers are at least 700 bytes -// long (20% = 140 bytes, at least). The 80% figure is "official", so the safest -// strategy might be to trap the first flow control report and guarantee that -// the effective maxObufBlock is the minimum of MAX_OBUF_BLOCK and 20% of first -// reported buffer credit. -// -#define MAX_CBUF_BLOCK 6 // Maximum total length of a bypass command block - -#define IBUF_SIZE 512 // character capacity of input buffer per channel -#define OBUF_SIZE 1024// character capacity of output buffer per channel -#define CBUF_SIZE 10 // character capacity of output bypass buffer - -typedef struct _i2ChanStr -{ - // First, back-pointers so that given a pointer to this structure, you can - // determine the correct board and channel number to reference, (say, when - // issuing commands, etc. (Note, channel number is in infl.hd.i2sChannel.) - - int port_index; // Index of port in channel structure array attached - // to board structure. - PTTY pTTY; // Pointer to tty structure for port (OS specific) - USHORT validity; // Indicates whether the given channel has been - // initialized, really exists (or is a missing - // channel, e.g. channel 9 on an 8-port box.) - - i2eBordStrPtr pMyBord; // Back-pointer to this channel's board structure - - int wopen; // waiting fer carrier - - int throttled; // Set if upper layer can take no data - - int flags; // Defined in tty.h - - PWAITQ open_wait; // Pointer for OS sleep function. - PWAITQ close_wait; // Pointer for OS sleep function. - PWAITQ delta_msr_wait;// Pointer for OS sleep function. - PWAITQ dss_now_wait; // Pointer for OS sleep function. - - struct timer_list BookmarkTimer; // Used by i2DrainOutput - wait_queue_head_t pBookmarkWait; // Used by i2DrainOutput - - int BaudBase; - int BaudDivisor; - - USHORT ClosingDelay; - USHORT ClosingWaitTime; - - volatile - flowIn infl; // This structure is initialized as a completely - // formed flow-control command packet, and as such - // has the channel number, also the capacity and - // "as-of" data needed continuously. - - USHORT sinceLastFlow; // Counts the number of characters read from input - // buffers, since the last time flow control info - // was sent. - - USHORT whenSendFlow; // Determines when new flow control is to be sent to - // the board. Note unlike earlier manifestations of - // the driver, these packets can be sent from - // in-place. - - USHORT channelNeeds; // Bit map of important things which must be done - // for this channel. (See bits below ) - - volatile - flowStat outfl; // Same type of structure is used to hold current - // flow control information used to control our - // output. "asof" is kept updated as data is sent, - // and "room" never goes to zero. - - // The incoming ring buffer - // Unlike the outgoing buffers, this holds raw data, not packets. The two - // extra bytes are used to hold the byte-padding when there is room for an - // odd number of bytes before we must wrap. - // - UCHAR Ibuf[IBUF_SIZE + 2]; - volatile - USHORT Ibuf_stuff; // Stuffing index - volatile - USHORT Ibuf_strip; // Stripping index - - // The outgoing ring-buffer: Holds Data and command packets. N.B., even - // though these are in the channel structure, the channel is also written - // here, the easier to send it to the fifo when ready. HOWEVER, individual - // packets here are NOT padded to even length: the routines for writing - // blocks to the fifo will pad to even byte counts. - // - UCHAR Obuf[OBUF_SIZE+MAX_OBUF_BLOCK+4]; - volatile - USHORT Obuf_stuff; // Stuffing index - volatile - USHORT Obuf_strip; // Stripping index - int Obuf_char_count; - - // The outgoing bypass-command buffer. Unlike earlier manifestations, the - // flow control packets are sent directly from the structures. As above, the - // channel number is included in the packet, but they are NOT padded to even - // size. - // - UCHAR Cbuf[CBUF_SIZE+MAX_CBUF_BLOCK+2]; - volatile - USHORT Cbuf_stuff; // Stuffing index - volatile - USHORT Cbuf_strip; // Stripping index - - // The temporary buffer for the Linux tty driver PutChar entry. - // - UCHAR Pbuf[MAX_OBUF_BLOCK - sizeof (i2DataHeader)]; - volatile - USHORT Pbuf_stuff; // Stuffing index - - // The state of incoming data-set signals - // - USHORT dataSetIn; // Bit-mapped according to below. Also indicates - // whether a break has been detected since last - // inquiry. - - // The state of outcoming data-set signals (as far as we can tell!) - // - USHORT dataSetOut; // Bit-mapped according to below. - - // Most recent hot-key identifier detected - // - USHORT hotKeyIn; // Hot key as sent by the board, HOT_CLEAR indicates - // no hot key detected since last examined. - - // Counter of outstanding requests for bookmarks - // - short bookMarks; // Number of outstanding bookmark requests, (+ive - // whenever a bookmark request if queued up, -ive - // whenever a bookmark is received). - - // Misc options - // - USHORT channelOptions; // See below - - // To store various incoming special packets - // - debugStat channelStatus; - cntStat channelRcount; - cntStat channelTcount; - failStat channelFail; - - // To store the last values for line characteristics we sent to the board. - // - int speed; - - int flush_flags; - - void (*trace)(unsigned short,unsigned char,unsigned char,unsigned long,...); - - /* - * Kernel counters for the 4 input interrupts - */ - struct async_icount icount; - - /* - * Task queues for processing input packets from the board. - */ - struct work_struct tqueue_input; - struct work_struct tqueue_status; - struct work_struct tqueue_hangup; - - rwlock_t Ibuf_spinlock; - rwlock_t Obuf_spinlock; - rwlock_t Cbuf_spinlock; - rwlock_t Pbuf_spinlock; - -} i2ChanStr, *i2ChanStrPtr; - -//--------------------------------------------------- -// Manifests and bit-maps for elements in i2ChanStr -//--------------------------------------------------- -// -// flush flags -// -#define STARTFL_FLAG 1 -#define STOPFL_FLAG 2 - -// validity -// -#define CHANNEL_MAGIC_BITS 0xff00 -#define CHANNEL_MAGIC 0x5300 // (validity & CHANNEL_MAGIC_BITS) == - // CHANNEL_MAGIC --> structure good - -#define CHANNEL_SUPPORT 0x0001 // Indicates channel is supported, exists, - // and passed P.O.S.T. - -// channelNeeds -// -#define NEED_FLOW 1 // Indicates flow control has been queued -#define NEED_INLINE 2 // Indicates inline commands or data queued -#define NEED_BYPASS 4 // Indicates bypass commands queued -#define NEED_CREDIT 8 // Indicates would be sending except has not sufficient - // credit. The data is still in the channel structure, - // but the channel is not enqueued in the board - // structure again until there is a credit received from - // the board. - -// dataSetIn (Also the bits for i2GetStatus return value) -// -#define I2_DCD 1 -#define I2_CTS 2 -#define I2_DSR 4 -#define I2_RI 8 - -// dataSetOut (Also the bits for i2GetStatus return value) -// -#define I2_DTR 1 -#define I2_RTS 2 - -// i2GetStatus() can optionally clear these bits -// -#define I2_BRK 0x10 // A break was detected -#define I2_PAR 0x20 // A parity error was received -#define I2_FRA 0x40 // A framing error was received -#define I2_OVR 0x80 // An overrun error was received - -// i2GetStatus() automatically clears these bits */ -// -#define I2_DDCD 0x100 // DCD changed from its former value -#define I2_DCTS 0x200 // CTS changed from its former value -#define I2_DDSR 0x400 // DSR changed from its former value -#define I2_DRI 0x800 // RI changed from its former value - -// hotKeyIn -// -#define HOT_CLEAR 0x1322 // Indicates that no hot-key has been detected - -// channelOptions -// -#define CO_NBLOCK_WRITE 1 // Writes don't block waiting for buffer. (Default - // is, they do wait.) - -// fcmodes -// -#define I2_OUTFLOW_CTS 0x0001 -#define I2_INFLOW_RTS 0x0002 -#define I2_INFLOW_DSR 0x0004 -#define I2_INFLOW_DTR 0x0008 -#define I2_OUTFLOW_DSR 0x0010 -#define I2_OUTFLOW_DTR 0x0020 -#define I2_OUTFLOW_XON 0x0040 -#define I2_OUTFLOW_XANY 0x0080 -#define I2_INFLOW_XON 0x0100 - -#define I2_CRTSCTS (I2_OUTFLOW_CTS|I2_INFLOW_RTS) -#define I2_IXANY_MODE (I2_OUTFLOW_XON|I2_OUTFLOW_XANY) - -//------------------------------------------- -// Macros used from user level like functions -//------------------------------------------- - -// Macros to set and clear channel options -// -#define i2SetOption(pCh, option) pCh->channelOptions |= option -#define i2ClrOption(pCh, option) pCh->channelOptions &= ~option - -// Macro to set fatal-error trap -// -#define i2SetFatalTrap(pB, routine) pB->i2eFatalTrap = routine - -//-------------------------------------------- -// Declarations and prototypes for i2lib.c -//-------------------------------------------- -// -static int i2InitChannels(i2eBordStrPtr, int, i2ChanStrPtr); -static int i2QueueCommands(int, i2ChanStrPtr, int, int, cmdSyntaxPtr,...); -static int i2GetStatus(i2ChanStrPtr, int); -static int i2Input(i2ChanStrPtr); -static int i2InputFlush(i2ChanStrPtr); -static int i2Output(i2ChanStrPtr, const char *, int); -static int i2OutputFree(i2ChanStrPtr); -static int i2ServiceBoard(i2eBordStrPtr); -static void i2DrainOutput(i2ChanStrPtr, int); - -#ifdef IP2DEBUG_TRACE -void ip2trace(unsigned short,unsigned char,unsigned char,unsigned long,...); -#else -#define ip2trace(a,b,c,d...) do {} while (0) -#endif - -// Argument to i2QueueCommands -// -#define C_IN_LINE 1 -#define C_BYPASS 0 - -#endif // I2LIB_H diff --git a/drivers/char/ip2/i2pack.h b/drivers/char/ip2/i2pack.h deleted file mode 100644 index 00342a677c90..000000000000 --- a/drivers/char/ip2/i2pack.h +++ /dev/null @@ -1,364 +0,0 @@ -/******************************************************************************* -* -* (c) 1998 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Definitions of the packets used to transfer data and commands -* Host <--> Board. Information provided here is only applicable -* when the standard loadware is active. -* -*******************************************************************************/ -#ifndef I2PACK_H -#define I2PACK_H 1 - -//----------------------------------------------- -// Revision History: -// -// 10 October 1991 MAG First draft -// 24 February 1992 MAG Additions for 1.4.x loadware -// 11 March 1992 MAG New status packets -// -//----------------------------------------------- - -//------------------------------------------------------------------------------ -// Packet Formats: -// -// Information passes between the host and board through the FIFO in packets. -// These have headers which indicate the type of packet. Because the fifo data -// path may be 16-bits wide, the protocol is constrained such that each packet -// is always padded to an even byte count. (The lower-level interface routines -// -- i2ellis.c -- are designed to do this). -// -// The sender (be it host or board) must place some number of complete packets -// in the fifo, then place a message in the mailbox that packets are available. -// Placing such a message interrupts the "receiver" (be it board or host), who -// reads the mailbox message and determines that there are incoming packets -// ready. Since there are no partial packets, and the length of a packet is -// given in the header, the remainder of the packet can be read without checking -// for FIFO empty condition. The process is repeated, packet by packet, until -// the incoming FIFO is empty. Then the receiver uses the outbound mailbox to -// signal the board that it has read the data. Only then can the sender place -// additional data in the fifo. -//------------------------------------------------------------------------------ -// -//------------------------------------------------ -// Definition of Packet Header Area -//------------------------------------------------ -// -// Caution: these only define header areas. In actual use the data runs off -// beyond the end of these structures. -// -// Since these structures are based on sequences of bytes which go to the board, -// there cannot be ANY padding between the elements. -#pragma pack(1) - -//---------------------------- -// DATA PACKETS -//---------------------------- - -typedef struct _i2DataHeader -{ - unsigned char i2sChannel; /* The channel number: 0-255 */ - - // -- Bitfields are allocated LSB first -- - - // For incoming data, indicates whether this is an ordinary packet or a - // special one (e.g., hot key hit). - unsigned i2sId : 2 __attribute__ ((__packed__)); - - // For tagging data packets. There are flush commands which flush only data - // packets bearing a particular tag. (used in implementing IntelliView and - // IntelliPrint). THE TAG VALUE 0xf is RESERVED and must not be used (it has - // meaning internally to the loadware). - unsigned i2sTag : 4; - - // These two bits determine the type of packet sent/received. - unsigned i2sType : 2; - - // The count of data to follow: does not include the possible additional - // padding byte. MAXIMUM COUNT: 4094. The top four bits must be 0. - unsigned short i2sCount; - -} i2DataHeader, *i2DataHeaderPtr; - -// Structure is immediately followed by the data, proper. - -//---------------------------- -// NON-DATA PACKETS -//---------------------------- - -typedef struct _i2CmdHeader -{ - unsigned char i2sChannel; // The channel number: 0-255 (Except where noted - // - see below - - // Number of bytes of commands, status or whatever to follow - unsigned i2sCount : 6; - - // These two bits determine the type of packet sent/received. - unsigned i2sType : 2; - -} i2CmdHeader, *i2CmdHeaderPtr; - -// Structure is immediately followed by the applicable data. - -//--------------------------------------- -// Flow Control Packets (Outbound) -//--------------------------------------- - -// One type of outbound command packet is so important that the entire structure -// is explicitly defined here. That is the flow-control packet. This is never -// sent by user-level code (as would be the commands to raise/lower DTR, for -// example). These are only sent by the library routines in response to reading -// incoming data into the buffers. -// -// The parameters inside the command block are maintained in place, then the -// block is sent at the appropriate time. - -typedef struct _flowIn -{ - i2CmdHeader hd; // Channel #, count, type (see above) - unsigned char fcmd; // The flow control command (37) - unsigned short asof; // As of byte number "asof" (LSB first!) I have room - // for "room" bytes - unsigned short room; -} flowIn, *flowInPtr; - -//---------------------------------------- -// (Incoming) Status Packets -//---------------------------------------- - -// Incoming packets which are non-data packets are status packets. In this case, -// the channel number in the header is unimportant. What follows are one or more -// sub-packets, the first word of which consists of the channel (first or low -// byte) and the status indicator (second or high byte), followed by possibly -// more data. - -#define STAT_CTS_UP 0 /* CTS raised (no other bytes) */ -#define STAT_CTS_DN 1 /* CTS dropped (no other bytes) */ -#define STAT_DCD_UP 2 /* DCD raised (no other bytes) */ -#define STAT_DCD_DN 3 /* DCD dropped (no other bytes) */ -#define STAT_DSR_UP 4 /* DSR raised (no other bytes) */ -#define STAT_DSR_DN 5 /* DSR dropped (no other bytes) */ -#define STAT_RI_UP 6 /* RI raised (no other bytes) */ -#define STAT_RI_DN 7 /* RI dropped (no other bytes) */ -#define STAT_BRK_DET 8 /* BRK detect (no other bytes) */ -#define STAT_FLOW 9 /* Flow control(-- more: see below */ -#define STAT_BMARK 10 /* Bookmark (no other bytes) - * Bookmark is sent as a response to - * a command 60: request for bookmark - */ -#define STAT_STATUS 11 /* Special packet: see below */ -#define STAT_TXCNT 12 /* Special packet: see below */ -#define STAT_RXCNT 13 /* Special packet: see below */ -#define STAT_BOXIDS 14 /* Special packet: see below */ -#define STAT_HWFAIL 15 /* Special packet: see below */ - -#define STAT_MOD_ERROR 0xc0 -#define STAT_MODEM 0xc0/* If status & STAT_MOD_ERROR: - * == STAT_MODEM, then this is a modem - * status packet, given in response to a - * CMD_DSS_NOW command. - * The low nibble has each data signal: - */ -#define STAT_MOD_DCD 0x8 -#define STAT_MOD_RI 0x4 -#define STAT_MOD_DSR 0x2 -#define STAT_MOD_CTS 0x1 - -#define STAT_ERROR 0x80/* If status & STAT_MOD_ERROR - * == STAT_ERROR, then - * sort of error on the channel. - * The remaining seven bits indicate - * what sort of error it is. - */ -/* The low three bits indicate parity, framing, or overrun errors */ - -#define STAT_E_PARITY 4 /* Parity error */ -#define STAT_E_FRAMING 2 /* Framing error */ -#define STAT_E_OVERRUN 1 /* (uxart) overrun error */ - -//--------------------------------------- -// STAT_FLOW packets -//--------------------------------------- - -typedef struct _flowStat -{ - unsigned short asof; - unsigned short room; -}flowStat, *flowStatPtr; - -// flowStat packets are received from the board to regulate the flow of outgoing -// data. A local copy of this structure is also kept to track the amount of -// credits used and credits remaining. "room" is the amount of space in the -// board's buffers, "as of" having received a certain byte number. When sending -// data to the fifo, you must calculate how much buffer space your packet will -// use. Add this to the current "asof" and subtract it from the current "room". -// -// The calculation for the board's buffer is given by CREDIT_USAGE, where size -// is the un-rounded count of either data characters or command characters. -// (Which is to say, the count rounded up, plus two). - -#define CREDIT_USAGE(size) (((size) + 3) & ~1) - -//--------------------------------------- -// STAT_STATUS packets -//--------------------------------------- - -typedef struct _debugStat -{ - unsigned char d_ccsr; - unsigned char d_txinh; - unsigned char d_stat1; - unsigned char d_stat2; -} debugStat, *debugStatPtr; - -// debugStat packets are sent to the host in response to a CMD_GET_STATUS -// command. Each byte is bit-mapped as described below: - -#define D_CCSR_XON 2 /* Has received XON, ready to transmit */ -#define D_CCSR_XOFF 4 /* Has received XOFF, not transmitting */ -#define D_CCSR_TXENAB 8 /* Transmitter is enabled */ -#define D_CCSR_RXENAB 0x80 /* Receiver is enabled */ - -#define D_TXINH_BREAK 1 /* We are sending a break */ -#define D_TXINH_EMPTY 2 /* No data to send */ -#define D_TXINH_SUSP 4 /* Output suspended via command 57 */ -#define D_TXINH_CMD 8 /* We are processing an in-line command */ -#define D_TXINH_LCD 0x10 /* LCD diagnostics are running */ -#define D_TXINH_PAUSE 0x20 /* We are processing a PAUSE command */ -#define D_TXINH_DCD 0x40 /* DCD is low, preventing transmission */ -#define D_TXINH_DSR 0x80 /* DSR is low, preventing transmission */ - -#define D_STAT1_TXEN 1 /* Transmit INTERRUPTS enabled */ -#define D_STAT1_RXEN 2 /* Receiver INTERRUPTS enabled */ -#define D_STAT1_MDEN 4 /* Modem (data set sigs) interrupts enabled */ -#define D_STAT1_RLM 8 /* Remote loopback mode selected */ -#define D_STAT1_LLM 0x10 /* Local internal loopback mode selected */ -#define D_STAT1_CTS 0x20 /* CTS is low, preventing transmission */ -#define D_STAT1_DTR 0x40 /* DTR is low, to stop remote transmission */ -#define D_STAT1_RTS 0x80 /* RTS is low, to stop remote transmission */ - -#define D_STAT2_TXMT 1 /* Transmit buffers are all empty */ -#define D_STAT2_RXMT 2 /* Receive buffers are all empty */ -#define D_STAT2_RXINH 4 /* Loadware has tried to inhibit remote - * transmission: dropped DTR, sent XOFF, - * whatever... - */ -#define D_STAT2_RXFLO 8 /* Loadware can send no more data to host - * until it receives a flow-control packet - */ -//----------------------------------------- -// STAT_TXCNT and STAT_RXCNT packets -//---------------------------------------- - -typedef struct _cntStat -{ - unsigned short cs_time; // (Assumes host is little-endian!) - unsigned short cs_count; -} cntStat, *cntStatPtr; - -// These packets are sent in response to a CMD_GET_RXCNT or a CMD_GET_TXCNT -// bypass command. cs_time is a running 1 Millisecond counter which acts as a -// time stamp. cs_count is a running counter of data sent or received from the -// uxarts. (Not including data added by the chip itself, as with CRLF -// processing). -//------------------------------------------ -// STAT_HWFAIL packets -//------------------------------------------ - -typedef struct _failStat -{ - unsigned char fs_written; - unsigned char fs_read; - unsigned short fs_address; -} failStat, *failStatPtr; - -// This packet is sent whenever the on-board diagnostic process detects an -// error. At startup, this process is dormant. The host can wake it up by -// issuing the bypass command CMD_HW_TEST. The process runs at low priority and -// performs continuous hardware verification; writing data to certain on-board -// registers, reading it back, and comparing. If it detects an error, this -// packet is sent to the host, and the process goes dormant again until the host -// sends another CMD_HW_TEST. It then continues with the next register to be -// tested. - -//------------------------------------------------------------------------------ -// Macros to deal with the headers more easily! Note that these are defined so -// they may be used as "left" as well as "right" expressions. -//------------------------------------------------------------------------------ - -// Given a pointer to the packet, reference the channel number -// -#define CHANNEL_OF(pP) ((i2DataHeaderPtr)(pP))->i2sChannel - -// Given a pointer to the packet, reference the Packet type -// -#define PTYPE_OF(pP) ((i2DataHeaderPtr)(pP))->i2sType - -// The possible types of packets -// -#define PTYPE_DATA 0 /* Host <--> Board */ -#define PTYPE_BYPASS 1 /* Host ---> Board */ -#define PTYPE_INLINE 2 /* Host ---> Board */ -#define PTYPE_STATUS 2 /* Host <--- Board */ - -// Given a pointer to a Data packet, reference the Tag -// -#define TAG_OF(pP) ((i2DataHeaderPtr)(pP))->i2sTag - -// Given a pointer to a Data packet, reference the data i.d. -// -#define ID_OF(pP) ((i2DataHeaderPtr)(pP))->i2sId - -// The possible types of ID's -// -#define ID_ORDINARY_DATA 0 -#define ID_HOT_KEY 1 - -// Given a pointer to a Data packet, reference the count -// -#define DATA_COUNT_OF(pP) ((i2DataHeaderPtr)(pP))->i2sCount - -// Given a pointer to a Data packet, reference the beginning of data -// -#define DATA_OF(pP) &((unsigned char *)(pP))[4] // 4 = size of header - -// Given a pointer to a Non-Data packet, reference the count -// -#define CMD_COUNT_OF(pP) ((i2CmdHeaderPtr)(pP))->i2sCount - -#define MAX_CMD_PACK_SIZE 62 // Maximum size of such a count - -// Given a pointer to a Non-Data packet, reference the beginning of data -// -#define CMD_OF(pP) &((unsigned char *)(pP))[2] // 2 = size of header - -//-------------------------------- -// MailBox Bits: -//-------------------------------- - -//-------------------------- -// Outgoing (host to board) -//-------------------------- -// -#define MB_OUT_STUFFED 0x80 // Host has placed output in fifo -#define MB_IN_STRIPPED 0x40 // Host has read in all input from fifo - -//-------------------------- -// Incoming (board to host) -//-------------------------- -// -#define MB_IN_STUFFED 0x80 // Board has placed input in fifo -#define MB_OUT_STRIPPED 0x40 // Board has read all output from fifo -#define MB_FATAL_ERROR 0x20 // Board has encountered a fatal error - -#pragma pack() // Reset padding to command-line default - -#endif // I2PACK_H - diff --git a/drivers/char/ip2/ip2.h b/drivers/char/ip2/ip2.h deleted file mode 100644 index 936ccc533949..000000000000 --- a/drivers/char/ip2/ip2.h +++ /dev/null @@ -1,107 +0,0 @@ -/******************************************************************************* -* -* (c) 1998 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Driver constants for configuration and tuning -* -* NOTES: -* -*******************************************************************************/ -#ifndef IP2_H -#define IP2_H - -#include "ip2types.h" -#include "i2cmd.h" - -/*************/ -/* Constants */ -/*************/ - -/* Device major numbers - since version 2.0.26. */ -#define IP2_TTY_MAJOR 71 -#define IP2_CALLOUT_MAJOR 72 -#define IP2_IPL_MAJOR 73 - -/* Board configuration array. - * This array defines the hardware irq and address for up to IP2_MAX_BOARDS - * (4 supported per ip2_types.h) ISA board addresses and irqs MUST be specified, - * PCI and EISA boards are probed for and automagicly configed - * iff the addresses are set to 1 and 2 respectivily. - * 0x0100 - 0x03f0 == ISA - * 1 == PCI - * 2 == EISA - * 0 == (skip this board) - * This array defines the hardware addresses for them. Special - * addresses are EISA and PCI which go sniffing for boards. - - * In a multiboard system the position in the array determines which port - * devices are assigned to each board: - * board 0 is assigned ttyF0.. to ttyF63, - * board 1 is assigned ttyF64 to ttyF127, - * board 2 is assigned ttyF128 to ttyF191, - * board 3 is assigned ttyF192 to ttyF255. - * - * In PCI and EISA bus systems each range is mapped to card in - * monotonically increasing slot number order, ISA position is as specified - * here. - - * If the irqs are ALL set to 0,0,0,0 all boards operate in - * polled mode. For interrupt operation ISA boards require that the IRQ be - * specified, while PCI and EISA boards any nonzero entry - * will enable interrupts using the BIOS configured irq for the board. - * An invalid irq entry will default to polled mode for that card and print - * console warning. - - * When the driver is loaded as a module these setting can be overridden on the - * modprobe command line or on an option line in /etc/modprobe.conf. - * If the driver is built-in the configuration must be - * set here for ISA cards and address set to 1 and 2 for PCI and EISA. - * - * Here is an example that shows most if not all possibe combinations: - - *static ip2config_t ip2config = - *{ - * {11,1,0,0}, // irqs - * { // Addresses - * 0x0308, // Board 0, ttyF0 - ttyF63// ISA card at io=0x308, irq=11 - * 0x0001, // Board 1, ttyF64 - ttyF127//PCI card configured by BIOS - * 0x0000, // Board 2, ttyF128 - ttyF191// Slot skipped - * 0x0002 // Board 3, ttyF192 - ttyF255//EISA card configured by BIOS - * // but polled not irq driven - * } - *}; - */ - - /* this structure is zeroed out because the suggested method is to configure - * the driver as a module, set up the parameters with an options line in - * /etc/modprobe.conf and load with modprobe or kmod, the kernel - * module loader - */ - - /* This structure is NOW always initialized when the driver is initialized. - * Compiled in defaults MUST be added to the io and irq arrays in - * ip2.c. Those values are configurable from insmod parameters in the - * case of modules or from command line parameters (ip2=io,irq) when - * compiled in. - */ - -static ip2config_t ip2config = -{ - {0,0,0,0}, // irqs - { // Addresses - /* Do NOT set compile time defaults HERE! Use the arrays in - ip2.c! These WILL be overwritten! =mhw= */ - 0x0000, // Board 0, ttyF0 - ttyF63 - 0x0000, // Board 1, ttyF64 - ttyF127 - 0x0000, // Board 2, ttyF128 - ttyF191 - 0x0000 // Board 3, ttyF192 - ttyF255 - } -}; - -#endif diff --git a/drivers/char/ip2/ip2ioctl.h b/drivers/char/ip2/ip2ioctl.h deleted file mode 100644 index aa0a9da85e05..000000000000 --- a/drivers/char/ip2/ip2ioctl.h +++ /dev/null @@ -1,35 +0,0 @@ -/******************************************************************************* -* -* (c) 1998 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Driver constants for configuration and tuning -* -* NOTES: -* -*******************************************************************************/ - -#ifndef IP2IOCTL_H -#define IP2IOCTL_H - -//************* -//* Constants * -//************* - -// High baud rates (if not defined elsewhere. -#ifndef B153600 -# define B153600 0010005 -#endif -#ifndef B307200 -# define B307200 0010006 -#endif -#ifndef B921600 -# define B921600 0010007 -#endif - -#endif diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c deleted file mode 100644 index ea7a8fb08283..000000000000 --- a/drivers/char/ip2/ip2main.c +++ /dev/null @@ -1,3234 +0,0 @@ -/* -* -* (c) 1999 by Computone Corporation -* -******************************************************************************** -* -* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Mainline code for the device driver -* -*******************************************************************************/ -// ToDo: -// -// Fix the immediate DSS_NOW problem. -// Work over the channel stats return logic in ip2_ipl_ioctl so they -// make sense for all 256 possible channels and so the user space -// utilities will compile and work properly. -// -// Done: -// -// 1.2.14 /\/\|=mhw=|\/\/ -// Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts. -// Changed the definition of ip2trace to be more consistent with kernel style -// Thanks to Andreas Dilger for these updates -// -// 1.2.13 /\/\|=mhw=|\/\/ -// DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform -// to agreed devfs serial device naming convention. -// -// 1.2.12 /\/\|=mhw=|\/\/ -// Cleaned up some remove queue cut and paste errors -// -// 1.2.11 /\/\|=mhw=|\/\/ -// Clean up potential NULL pointer dereferences -// Clean up devfs registration -// Add kernel command line parsing for io and irq -// Compile defaults for io and irq are now set in ip2.c not ip2.h! -// Reworked poll_only hack for explicit parameter setting -// You must now EXPLICITLY set poll_only = 1 or set all irqs to 0 -// Merged ip2_loadmain and old_ip2_init -// Converted all instances of interruptible_sleep_on into queue calls -// Most of these had no race conditions but better to clean up now -// -// 1.2.10 /\/\|=mhw=|\/\/ -// Fixed the bottom half interrupt handler and enabled USE_IQI -// to split the interrupt handler into a formal top-half / bottom-half -// Fixed timing window on high speed processors that queued messages to -// the outbound mail fifo faster than the board could handle. -// -// 1.2.9 -// Four box EX was barfing on >128k kmalloc, made structure smaller by -// reducing output buffer size -// -// 1.2.8 -// Device file system support (MHW) -// -// 1.2.7 -// Fixed -// Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules -// -// 1.2.6 -//Fixes DCD problems -// DCD was not reported when CLOCAL was set on call to TIOCMGET -// -//Enhancements: -// TIOCMGET requests and waits for status return -// No DSS interrupts enabled except for DCD when needed -// -// For internal use only -// -//#define IP2DEBUG_INIT -//#define IP2DEBUG_OPEN -//#define IP2DEBUG_WRITE -//#define IP2DEBUG_READ -//#define IP2DEBUG_IOCTL -//#define IP2DEBUG_IPL - -//#define IP2DEBUG_TRACE -//#define DEBUG_FIFO - -/************/ -/* Includes */ -/************/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include -#include -#include - -#include -#include - -#include - -#include "ip2types.h" -#include "ip2trace.h" -#include "ip2ioctl.h" -#include "ip2.h" -#include "i2ellis.h" -#include "i2lib.h" - -/***************** - * /proc/ip2mem * - *****************/ - -#include -#include - -static DEFINE_MUTEX(ip2_mutex); -static const struct file_operations ip2mem_proc_fops; -static const struct file_operations ip2_proc_fops; - -/********************/ -/* Type Definitions */ -/********************/ - -/*************/ -/* Constants */ -/*************/ - -/* String constants to identify ourselves */ -static const char pcName[] = "Computone IntelliPort Plus multiport driver"; -static const char pcVersion[] = "1.2.14"; - -/* String constants for port names */ -static const char pcDriver_name[] = "ip2"; -static const char pcIpl[] = "ip2ipl"; - -/***********************/ -/* Function Prototypes */ -/***********************/ - -/* Global module entry functions */ - -/* Private (static) functions */ -static int ip2_open(PTTY, struct file *); -static void ip2_close(PTTY, struct file *); -static int ip2_write(PTTY, const unsigned char *, int); -static int ip2_putchar(PTTY, unsigned char); -static void ip2_flush_chars(PTTY); -static int ip2_write_room(PTTY); -static int ip2_chars_in_buf(PTTY); -static void ip2_flush_buffer(PTTY); -static int ip2_ioctl(PTTY, UINT, ULONG); -static void ip2_set_termios(PTTY, struct ktermios *); -static void ip2_set_line_discipline(PTTY); -static void ip2_throttle(PTTY); -static void ip2_unthrottle(PTTY); -static void ip2_stop(PTTY); -static void ip2_start(PTTY); -static void ip2_hangup(PTTY); -static int ip2_tiocmget(struct tty_struct *tty); -static int ip2_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear); -static int ip2_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount); - -static void set_irq(int, int); -static void ip2_interrupt_bh(struct work_struct *work); -static irqreturn_t ip2_interrupt(int irq, void *dev_id); -static void ip2_poll(unsigned long arg); -static inline void service_all_boards(void); -static void do_input(struct work_struct *); -static void do_status(struct work_struct *); - -static void ip2_wait_until_sent(PTTY,int); - -static void set_params (i2ChanStrPtr, struct ktermios *); -static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *); -static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *); - -static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *); -static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *); -static long ip2_ipl_ioctl(struct file *, UINT, ULONG); -static int ip2_ipl_open(struct inode *, struct file *); - -static int DumpTraceBuffer(char __user *, int); -static int DumpFifoBuffer( char __user *, int); - -static void ip2_init_board(int, const struct firmware *); -static unsigned short find_eisa_board(int); -static int ip2_setup(char *str); - -/***************/ -/* Static Data */ -/***************/ - -static struct tty_driver *ip2_tty_driver; - -/* Here, then is a table of board pointers which the interrupt routine should - * scan through to determine who it must service. - */ -static unsigned short i2nBoards; // Number of boards here - -static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS]; - -static i2ChanStrPtr DevTable[IP2_MAX_PORTS]; -//DevTableMem just used to save addresses for kfree -static void *DevTableMem[IP2_MAX_BOARDS]; - -/* This is the driver descriptor for the ip2ipl device, which is used to - * download the loadware to the boards. - */ -static const struct file_operations ip2_ipl = { - .owner = THIS_MODULE, - .read = ip2_ipl_read, - .write = ip2_ipl_write, - .unlocked_ioctl = ip2_ipl_ioctl, - .open = ip2_ipl_open, - .llseek = noop_llseek, -}; - -static unsigned long irq_counter; -static unsigned long bh_counter; - -// Use immediate queue to service interrupts -#define USE_IQI -//#define USE_IQ // PCI&2.2 needs work - -/* The timer_list entry for our poll routine. If interrupt operation is not - * selected, the board is serviced periodically to see if anything needs doing. - */ -#define POLL_TIMEOUT (jiffies + 1) -static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0); - -#ifdef IP2DEBUG_TRACE -/* Trace (debug) buffer data */ -#define TRACEMAX 1000 -static unsigned long tracebuf[TRACEMAX]; -static int tracestuff; -static int tracestrip; -static int tracewrap; -#endif - -/**********/ -/* Macros */ -/**********/ - -#ifdef IP2DEBUG_OPEN -#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] ttyc=%d, modc=%x -> %s\n", \ - tty->name,(pCh->flags), \ - tty->count,/*GET_USE_COUNT(module)*/0,s) -#else -#define DBG_CNT(s) -#endif - -/********/ -/* Code */ -/********/ - -#include "i2ellis.c" /* Extremely low-level interface services */ -#include "i2cmd.c" /* Standard loadware command definitions */ -#include "i2lib.c" /* High level interface services */ - -/* Configuration area for modprobe */ - -MODULE_AUTHOR("Doug McNash"); -MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); -MODULE_LICENSE("GPL"); - -#define MAX_CMD_STR 50 - -static int poll_only; -static char cmd[MAX_CMD_STR]; - -static int Eisa_irq; -static int Eisa_slot; - -static int iindx; -static char rirqs[IP2_MAX_BOARDS]; -static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0}; - -/* Note: Add compiled in defaults to these arrays, not to the structure - in ip2.h any longer. That structure WILL get overridden - by these values, or command line values, or insmod values!!! =mhw= -*/ -static int io[IP2_MAX_BOARDS]; -static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 }; - -MODULE_AUTHOR("Doug McNash"); -MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); -module_param_array(irq, int, NULL, 0); -MODULE_PARM_DESC(irq, "Interrupts for IntelliPort Cards"); -module_param_array(io, int, NULL, 0); -MODULE_PARM_DESC(io, "I/O ports for IntelliPort Cards"); -module_param(poll_only, bool, 0); -MODULE_PARM_DESC(poll_only, "Do not use card interrupts"); -module_param_string(ip2, cmd, MAX_CMD_STR, 0); -MODULE_PARM_DESC(ip2, "Contains module parameter passed with 'ip2='"); - -/* for sysfs class support */ -static struct class *ip2_class; - -/* Some functions to keep track of what irqs we have */ - -static int __init is_valid_irq(int irq) -{ - int *i = Valid_Irqs; - - while (*i != 0 && *i != irq) - i++; - - return *i; -} - -static void __init mark_requested_irq(char irq) -{ - rirqs[iindx++] = irq; -} - -static int __exit clear_requested_irq(char irq) -{ - int i; - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - if (rirqs[i] == irq) { - rirqs[i] = 0; - return 1; - } - } - return 0; -} - -static int have_requested_irq(char irq) -{ - /* array init to zeros so 0 irq will not be requested as a side - * effect */ - int i; - for (i = 0; i < IP2_MAX_BOARDS; ++i) - if (rirqs[i] == irq) - return 1; - return 0; -} - -/******************************************************************************/ -/* Function: cleanup_module() */ -/* Parameters: None */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* This is a required entry point for an installable module. It has to return */ -/* the device and the driver to a passive state. It should not be necessary */ -/* to reset the board fully, especially as the loadware is downloaded */ -/* externally rather than in the driver. We just want to disable the board */ -/* and clear the loadware to a reset state. To allow this there has to be a */ -/* way to detect whether the board has the loadware running at init time to */ -/* handle subsequent installations of the driver. All memory allocated by the */ -/* driver should be returned since it may be unloaded from memory. */ -/******************************************************************************/ -static void __exit ip2_cleanup_module(void) -{ - int err; - int i; - - del_timer_sync(&PollTimer); - - /* Reset the boards we have. */ - for (i = 0; i < IP2_MAX_BOARDS; i++) - if (i2BoardPtrTable[i]) - iiReset(i2BoardPtrTable[i]); - - /* The following is done at most once, if any boards were installed. */ - for (i = 0; i < IP2_MAX_BOARDS; i++) { - if (i2BoardPtrTable[i]) { - iiResetDelay(i2BoardPtrTable[i]); - /* free io addresses and Tibet */ - release_region(ip2config.addr[i], 8); - device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); - device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, - 4 * i + 1)); - } - /* Disable and remove interrupt handler. */ - if (ip2config.irq[i] > 0 && - have_requested_irq(ip2config.irq[i])) { - free_irq(ip2config.irq[i], (void *)&pcName); - clear_requested_irq(ip2config.irq[i]); - } - } - class_destroy(ip2_class); - err = tty_unregister_driver(ip2_tty_driver); - if (err) - printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", - err); - put_tty_driver(ip2_tty_driver); - unregister_chrdev(IP2_IPL_MAJOR, pcIpl); - remove_proc_entry("ip2mem", NULL); - - /* free memory */ - for (i = 0; i < IP2_MAX_BOARDS; i++) { - void *pB; -#ifdef CONFIG_PCI - if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) { - pci_disable_device(ip2config.pci_dev[i]); - pci_dev_put(ip2config.pci_dev[i]); - ip2config.pci_dev[i] = NULL; - } -#endif - pB = i2BoardPtrTable[i]; - if (pB != NULL) { - kfree(pB); - i2BoardPtrTable[i] = NULL; - } - if (DevTableMem[i] != NULL) { - kfree(DevTableMem[i]); - DevTableMem[i] = NULL; - } - } -} -module_exit(ip2_cleanup_module); - -static const struct tty_operations ip2_ops = { - .open = ip2_open, - .close = ip2_close, - .write = ip2_write, - .put_char = ip2_putchar, - .flush_chars = ip2_flush_chars, - .write_room = ip2_write_room, - .chars_in_buffer = ip2_chars_in_buf, - .flush_buffer = ip2_flush_buffer, - .ioctl = ip2_ioctl, - .throttle = ip2_throttle, - .unthrottle = ip2_unthrottle, - .set_termios = ip2_set_termios, - .set_ldisc = ip2_set_line_discipline, - .stop = ip2_stop, - .start = ip2_start, - .hangup = ip2_hangup, - .tiocmget = ip2_tiocmget, - .tiocmset = ip2_tiocmset, - .get_icount = ip2_get_icount, - .proc_fops = &ip2_proc_fops, -}; - -/******************************************************************************/ -/* Function: ip2_loadmain() */ -/* Parameters: irq, io from command line of insmod et. al. */ -/* pointer to fip firmware and firmware size for boards */ -/* Returns: Success (0) */ -/* */ -/* Description: */ -/* This was the required entry point for all drivers (now in ip2.c) */ -/* It performs all */ -/* initialisation of the devices and driver structures, and registers itself */ -/* with the relevant kernel modules. */ -/******************************************************************************/ -/* IRQF_DISABLED - if set blocks all interrupts else only this line */ -/* IRQF_SHARED - for shared irq PCI or maybe EISA only */ -/* SA_RANDOM - can be source for cert. random number generators */ -#define IP2_SA_FLAGS 0 - - -static const struct firmware *ip2_request_firmware(void) -{ - struct platform_device *pdev; - const struct firmware *fw; - - pdev = platform_device_register_simple("ip2", 0, NULL, 0); - if (IS_ERR(pdev)) { - printk(KERN_ERR "Failed to register platform device for ip2\n"); - return NULL; - } - if (request_firmware(&fw, "intelliport2.bin", &pdev->dev)) { - printk(KERN_ERR "Failed to load firmware 'intelliport2.bin'\n"); - fw = NULL; - } - platform_device_unregister(pdev); - return fw; -} - -/****************************************************************************** - * ip2_setup: - * str: kernel command line string - * - * Can't autoprobe the boards so user must specify configuration on - * kernel command line. Sane people build it modular but the others - * come here. - * - * Alternating pairs of io,irq for up to 4 boards. - * ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3 - * - * io=0 => No board - * io=1 => PCI - * io=2 => EISA - * else => ISA I/O address - * - * irq=0 or invalid for ISA will revert to polling mode - * - * Any value = -1, do not overwrite compiled in value. - * - ******************************************************************************/ -static int __init ip2_setup(char *str) -{ - int j, ints[10]; /* 4 boards, 2 parameters + 2 */ - unsigned int i; - - str = get_options(str, ARRAY_SIZE(ints), ints); - - for (i = 0, j = 1; i < 4; i++) { - if (j > ints[0]) - break; - if (ints[j] >= 0) - io[i] = ints[j]; - j++; - if (j > ints[0]) - break; - if (ints[j] >= 0) - irq[i] = ints[j]; - j++; - } - return 1; -} -__setup("ip2=", ip2_setup); - -static int __init ip2_loadmain(void) -{ - int i, j, box; - int err = 0; - i2eBordStrPtr pB = NULL; - int rc = -1; - const struct firmware *fw = NULL; - char *str; - - str = cmd; - - if (poll_only) { - /* Hard lock the interrupts to zero */ - irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0; - } - - /* Check module parameter with 'ip2=' has been passed or not */ - if (!poll_only && (!strncmp(str, "ip2=", 4))) - ip2_setup(str); - - ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0); - - /* process command line arguments to modprobe or - insmod i.e. iop & irqp */ - /* irqp and iop should ALWAYS be specified now... But we check - them individually just to be sure, anyways... */ - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - ip2config.addr[i] = io[i]; - if (irq[i] >= 0) - ip2config.irq[i] = irq[i]; - else - ip2config.irq[i] = 0; - /* This is a little bit of a hack. If poll_only=1 on command - line back in ip2.c OR all IRQs on all specified boards are - explicitly set to 0, then drop to poll only mode and override - PCI or EISA interrupts. This superceeds the old hack of - triggering if all interrupts were zero (like da default). - Still a hack but less prone to random acts of terrorism. - - What we really should do, now that the IRQ default is set - to -1, is to use 0 as a hard coded, do not probe. - - /\/\|=mhw=|\/\/ - */ - poll_only |= irq[i]; - } - poll_only = !poll_only; - - /* Announce our presence */ - printk(KERN_INFO "%s version %s\n", pcName, pcVersion); - - ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); - if (!ip2_tty_driver) - return -ENOMEM; - - /* Initialise all the boards we can find (up to the maximum). */ - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - switch (ip2config.addr[i]) { - case 0: /* skip this slot even if card is present */ - break; - default: /* ISA */ - /* ISA address must be specified */ - if (ip2config.addr[i] < 0x100 || - ip2config.addr[i] > 0x3f8) { - printk(KERN_ERR "IP2: Bad ISA board %d " - "address %x\n", i, - ip2config.addr[i]); - ip2config.addr[i] = 0; - break; - } - ip2config.type[i] = ISA; - - /* Check for valid irq argument, set for polling if - * invalid */ - if (ip2config.irq[i] && - !is_valid_irq(ip2config.irq[i])) { - printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n", - ip2config.irq[i]); - /* 0 is polling and is valid in that sense */ - ip2config.irq[i] = 0; - } - break; - case PCI: -#ifdef CONFIG_PCI - { - struct pci_dev *pdev = NULL; - u32 addr; - int status; - - pdev = pci_get_device(PCI_VENDOR_ID_COMPUTONE, - PCI_DEVICE_ID_COMPUTONE_IP2EX, pdev); - if (pdev == NULL) { - ip2config.addr[i] = 0; - printk(KERN_ERR "IP2: PCI board %d not " - "found\n", i); - break; - } - - if (pci_enable_device(pdev)) { - dev_err(&pdev->dev, "can't enable device\n"); - goto out; - } - ip2config.type[i] = PCI; - ip2config.pci_dev[i] = pci_dev_get(pdev); - status = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1, - &addr); - if (addr & 1) - ip2config.addr[i] = (USHORT)(addr & 0xfffe); - else - dev_err(&pdev->dev, "I/O address error\n"); - - ip2config.irq[i] = pdev->irq; -out: - pci_dev_put(pdev); - } -#else - printk(KERN_ERR "IP2: PCI card specified but PCI " - "support not enabled.\n"); - printk(KERN_ERR "IP2: Recompile kernel with CONFIG_PCI " - "defined!\n"); -#endif /* CONFIG_PCI */ - break; - case EISA: - ip2config.addr[i] = find_eisa_board(Eisa_slot + 1); - if (ip2config.addr[i] != 0) { - /* Eisa_irq set as side effect, boo */ - ip2config.type[i] = EISA; - } - ip2config.irq[i] = Eisa_irq; - break; - } /* switch */ - } /* for */ - - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - if (ip2config.addr[i]) { - pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL); - if (pB) { - i2BoardPtrTable[i] = pB; - iiSetAddress(pB, ip2config.addr[i], - ii2DelayTimer); - iiReset(pB); - } else - printk(KERN_ERR "IP2: board memory allocation " - "error\n"); - } - } - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - pB = i2BoardPtrTable[i]; - if (pB != NULL) { - iiResetDelay(pB); - break; - } - } - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - /* We don't want to request the firmware unless we have at - least one board */ - if (i2BoardPtrTable[i] != NULL) { - if (!fw) - fw = ip2_request_firmware(); - if (!fw) - break; - ip2_init_board(i, fw); - } - } - if (fw) - release_firmware(fw); - - ip2trace(ITRC_NO_PORT, ITRC_INIT, 2, 0); - - ip2_tty_driver->owner = THIS_MODULE; - ip2_tty_driver->name = "ttyF"; - ip2_tty_driver->driver_name = pcDriver_name; - ip2_tty_driver->major = IP2_TTY_MAJOR; - ip2_tty_driver->minor_start = 0; - ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; - ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; - ip2_tty_driver->init_termios = tty_std_termios; - ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; - ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | - TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(ip2_tty_driver, &ip2_ops); - - ip2trace(ITRC_NO_PORT, ITRC_INIT, 3, 0); - - err = tty_register_driver(ip2_tty_driver); - if (err) { - printk(KERN_ERR "IP2: failed to register tty driver\n"); - put_tty_driver(ip2_tty_driver); - return err; /* leaking resources */ - } - - err = register_chrdev(IP2_IPL_MAJOR, pcIpl, &ip2_ipl); - if (err) { - printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", - err); - } else { - /* create the sysfs class */ - ip2_class = class_create(THIS_MODULE, "ip2"); - if (IS_ERR(ip2_class)) { - err = PTR_ERR(ip2_class); - goto out_chrdev; - } - } - /* Register the read_procmem thing */ - if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) { - printk(KERN_ERR "IP2: failed to register read_procmem\n"); - return -EIO; /* leaking resources */ - } - - ip2trace(ITRC_NO_PORT, ITRC_INIT, 4, 0); - /* Register the interrupt handler or poll handler, depending upon the - * specified interrupt. - */ - - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - if (ip2config.addr[i] == 0) - continue; - - pB = i2BoardPtrTable[i]; - if (pB != NULL) { - device_create(ip2_class, NULL, - MKDEV(IP2_IPL_MAJOR, 4 * i), - NULL, "ipl%d", i); - device_create(ip2_class, NULL, - MKDEV(IP2_IPL_MAJOR, 4 * i + 1), - NULL, "stat%d", i); - - for (box = 0; box < ABS_MAX_BOXES; box++) - for (j = 0; j < ABS_BIGGEST_BOX; j++) - if (pB->i2eChannelMap[box] & (1 << j)) - tty_register_device( - ip2_tty_driver, - j + ABS_BIGGEST_BOX * - (box+i*ABS_MAX_BOXES), - NULL); - } - - if (poll_only) { - /* Poll only forces driver to only use polling and - to ignore the probed PCI or EISA interrupts. */ - ip2config.irq[i] = CIR_POLL; - } - if (ip2config.irq[i] == CIR_POLL) { -retry: - if (!timer_pending(&PollTimer)) { - mod_timer(&PollTimer, POLL_TIMEOUT); - printk(KERN_INFO "IP2: polling\n"); - } - } else { - if (have_requested_irq(ip2config.irq[i])) - continue; - rc = request_irq(ip2config.irq[i], ip2_interrupt, - IP2_SA_FLAGS | - (ip2config.type[i] == PCI ? IRQF_SHARED : 0), - pcName, i2BoardPtrTable[i]); - if (rc) { - printk(KERN_ERR "IP2: request_irq failed: " - "error %d\n", rc); - ip2config.irq[i] = CIR_POLL; - printk(KERN_INFO "IP2: Polling %ld/sec.\n", - (POLL_TIMEOUT - jiffies)); - goto retry; - } - mark_requested_irq(ip2config.irq[i]); - /* Initialise the interrupt handler bottom half - * (aka slih). */ - } - } - - for (i = 0; i < IP2_MAX_BOARDS; ++i) { - if (i2BoardPtrTable[i]) { - /* set and enable board interrupt */ - set_irq(i, ip2config.irq[i]); - } - } - - ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0); - - return 0; - -out_chrdev: - unregister_chrdev(IP2_IPL_MAJOR, "ip2"); - /* unregister and put tty here */ - return err; -} -module_init(ip2_loadmain); - -/******************************************************************************/ -/* Function: ip2_init_board() */ -/* Parameters: Index of board in configuration structure */ -/* Returns: Success (0) */ -/* */ -/* Description: */ -/* This function initializes the specified board. The loadware is copied to */ -/* the board, the channel structures are initialized, and the board details */ -/* are reported on the console. */ -/******************************************************************************/ -static void -ip2_init_board(int boardnum, const struct firmware *fw) -{ - int i; - int nports = 0, nboxes = 0; - i2ChanStrPtr pCh; - i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; - - if ( !iiInitialize ( pB ) ) { - printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n", - pB->i2eBase, pB->i2eError ); - goto err_initialize; - } - printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1, - ip2config.addr[boardnum], ip2config.irq[boardnum] ); - - if (!request_region( ip2config.addr[boardnum], 8, pcName )) { - printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]); - goto err_initialize; - } - - if ( iiDownloadAll ( pB, (loadHdrStrPtr)fw->data, 1, fw->size ) - != II_DOWN_GOOD ) { - printk ( KERN_ERR "IP2: failed to download loadware\n" ); - goto err_release_region; - } else { - printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n", - pB->i2ePom.e.porVersion, - pB->i2ePom.e.porRevision, - pB->i2ePom.e.porSubRev, pB->i2eLVersion, - pB->i2eLRevision, pB->i2eLSub ); - } - - switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { - - default: - printk( KERN_ERR "IP2: Unknown board type, ID = %x\n", - pB->i2ePom.e.porID ); - nports = 0; - goto err_release_region; - break; - - case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */ - printk ( KERN_INFO "IP2: ISA-4\n" ); - nports = 4; - break; - - case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */ - printk ( KERN_INFO "IP2: ISA-8 std\n" ); - nports = 8; - break; - - case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */ - printk ( KERN_INFO "IP2: ISA-8 RJ11\n" ); - nports = 8; - break; - - case POR_ID_FIIEX: /* IntelliPort IIEX */ - { - int portnum = IP2_PORTS_PER_BOARD * boardnum; - int box; - - for( box = 0; box < ABS_MAX_BOXES; ++box ) { - if ( pB->i2eChannelMap[box] != 0 ) { - ++nboxes; - } - for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { - if ( pB->i2eChannelMap[box] & 1<< i ) { - ++nports; - } - } - } - DevTableMem[boardnum] = pCh = - kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL ); - if ( !pCh ) { - printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); - goto err_release_region; - } - if ( !i2InitChannels( pB, nports, pCh ) ) { - printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); - kfree ( pCh ); - goto err_release_region; - } - pB->i2eChannelPtr = &DevTable[portnum]; - pB->i2eChannelCnt = ABS_MOST_PORTS; - - for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) { - for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { - if ( pB->i2eChannelMap[box] & (1 << i) ) { - DevTable[portnum + i] = pCh; - pCh->port_index = portnum + i; - pCh++; - } - } - } - printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n", - nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 ); - } - goto ex_exit; - } - DevTableMem[boardnum] = pCh = - kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL ); - if ( !pCh ) { - printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); - goto err_release_region; - } - pB->i2eChannelPtr = pCh; - pB->i2eChannelCnt = nports; - if ( !i2InitChannels( pB, nports, pCh ) ) { - printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); - kfree ( pCh ); - goto err_release_region; - } - pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum]; - - for( i = 0; i < pB->i2eChannelCnt; ++i ) { - DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh; - pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i; - pCh++; - } -ex_exit: - INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh); - return; - -err_release_region: - release_region(ip2config.addr[boardnum], 8); -err_initialize: - kfree ( pB ); - i2BoardPtrTable[boardnum] = NULL; - return; -} - -/******************************************************************************/ -/* Function: find_eisa_board ( int start_slot ) */ -/* Parameters: First slot to check */ -/* Returns: Address of EISA IntelliPort II controller */ -/* */ -/* Description: */ -/* This function searches for an EISA IntelliPort controller, starting */ -/* from the specified slot number. If the motherboard is not identified as an */ -/* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */ -/* it returns the base address of the controller. */ -/******************************************************************************/ -static unsigned short -find_eisa_board( int start_slot ) -{ - int i, j; - unsigned int idm = 0; - unsigned int idp = 0; - unsigned int base = 0; - unsigned int value; - int setup_address; - int setup_irq; - int ismine = 0; - - /* - * First a check for an EISA motherboard, which we do by comparing the - * EISA ID registers for the system board and the first couple of slots. - * No slot ID should match the system board ID, but on an ISA or PCI - * machine the odds are that an empty bus will return similar values for - * each slot. - */ - i = 0x0c80; - value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3); - for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) { - j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3); - if ( value == j ) - return 0; - } - - /* - * OK, so we are inclined to believe that this is an EISA machine. Find - * an IntelliPort controller. - */ - for( i = start_slot; i < 16; i++ ) { - base = i << 12; - idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff); - idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff); - ismine = 0; - if ( idm == 0x0e8e ) { - if ( idp == 0x0281 || idp == 0x0218 ) { - ismine = 1; - } else if ( idp == 0x0282 || idp == 0x0283 ) { - ismine = 3; /* Can do edge-trigger */ - } - if ( ismine ) { - Eisa_slot = i; - break; - } - } - } - if ( !ismine ) - return 0; - - /* It's some sort of EISA card, but at what address is it configured? */ - - setup_address = base + 0xc88; - value = inb(base + 0xc86); - setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0; - - if ( (ismine & 2) && !(value & 0x10) ) { - ismine = 1; /* Could be edging, but not */ - } - - if ( Eisa_irq == 0 ) { - Eisa_irq = setup_irq; - } else if ( Eisa_irq != setup_irq ) { - printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" ); - } - -#ifdef IP2DEBUG_INIT -printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x", - base >> 12, idm, idp, setup_address); - if ( Eisa_irq ) { - printk(KERN_DEBUG ", Interrupt %d %s\n", - setup_irq, (ismine & 2) ? "(edge)" : "(level)"); - } else { - printk(KERN_DEBUG ", (polled)\n"); - } -#endif - return setup_address; -} - -/******************************************************************************/ -/* Function: set_irq() */ -/* Parameters: index to board in board table */ -/* IRQ to use */ -/* Returns: Success (0) */ -/* */ -/* Description: */ -/******************************************************************************/ -static void -set_irq( int boardnum, int boardIrq ) -{ - unsigned char tempCommand[16]; - i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; - unsigned long flags; - - /* - * Notify the boards they may generate interrupts. This is done by - * sending an in-line command to channel 0 on each board. This is why - * the channels have to be defined already. For each board, if the - * interrupt has never been defined, we must do so NOW, directly, since - * board will not send flow control or even give an interrupt until this - * is done. If polling we must send 0 as the interrupt parameter. - */ - - // We will get an interrupt here at the end of this function - - iiDisableMailIrq(pB); - - /* We build up the entire packet header. */ - CHANNEL_OF(tempCommand) = 0; - PTYPE_OF(tempCommand) = PTYPE_INLINE; - CMD_COUNT_OF(tempCommand) = 2; - (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ; - (CMD_OF(tempCommand))[1] = boardIrq; - /* - * Write to FIFO; don't bother to adjust fifo capacity for this, since - * board will respond almost immediately after SendMail hit. - */ - write_lock_irqsave(&pB->write_fifo_spinlock, flags); - iiWriteBuf(pB, tempCommand, 4); - write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); - pB->i2eUsingIrq = boardIrq; - pB->i2eOutMailWaiting |= MB_OUT_STUFFED; - - /* Need to update number of boards before you enable mailbox int */ - ++i2nBoards; - - CHANNEL_OF(tempCommand) = 0; - PTYPE_OF(tempCommand) = PTYPE_BYPASS; - CMD_COUNT_OF(tempCommand) = 6; - (CMD_OF(tempCommand))[0] = 88; // SILO - (CMD_OF(tempCommand))[1] = 64; // chars - (CMD_OF(tempCommand))[2] = 32; // ms - - (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK - (CMD_OF(tempCommand))[4] = 64; // chars - - (CMD_OF(tempCommand))[5] = 87; // HW_TEST - write_lock_irqsave(&pB->write_fifo_spinlock, flags); - iiWriteBuf(pB, tempCommand, 8); - write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); - - CHANNEL_OF(tempCommand) = 0; - PTYPE_OF(tempCommand) = PTYPE_BYPASS; - CMD_COUNT_OF(tempCommand) = 1; - (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */ - iiWriteBuf(pB, tempCommand, 3); - -#ifdef XXX - // enable heartbeat for test porpoises - CHANNEL_OF(tempCommand) = 0; - PTYPE_OF(tempCommand) = PTYPE_BYPASS; - CMD_COUNT_OF(tempCommand) = 2; - (CMD_OF(tempCommand))[0] = 44; /* get ping */ - (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ - write_lock_irqsave(&pB->write_fifo_spinlock, flags); - iiWriteBuf(pB, tempCommand, 4); - write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); -#endif - - iiEnableMailIrq(pB); - iiSendPendingMail(pB); -} - -/******************************************************************************/ -/* Interrupt Handler Section */ -/******************************************************************************/ - -static inline void -service_all_boards(void) -{ - int i; - i2eBordStrPtr pB; - - /* Service every board on the list */ - for( i = 0; i < IP2_MAX_BOARDS; ++i ) { - pB = i2BoardPtrTable[i]; - if ( pB ) { - i2ServiceBoard( pB ); - } - } -} - - -/******************************************************************************/ -/* Function: ip2_interrupt_bh(work) */ -/* Parameters: work - pointer to the board structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* Service the board in a bottom half interrupt handler and then */ -/* reenable the board's interrupts if it has an IRQ number */ -/* */ -/******************************************************************************/ -static void -ip2_interrupt_bh(struct work_struct *work) -{ - i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt); -// pB better well be set or we have a problem! We can only get -// here from the IMMEDIATE queue. Here, we process the boards. -// Checking pB doesn't cost much and it saves us from the sanity checkers. - - bh_counter++; - - if ( pB ) { - i2ServiceBoard( pB ); - if( pB->i2eUsingIrq ) { -// Re-enable his interrupts - iiEnableMailIrq(pB); - } - } -} - - -/******************************************************************************/ -/* Function: ip2_interrupt(int irq, void *dev_id) */ -/* Parameters: irq - interrupt number */ -/* pointer to optional device ID structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* Our task here is simply to identify each board which needs servicing. */ -/* If we are queuing then, queue it to be serviced, and disable its irq */ -/* mask otherwise process the board directly. */ -/* */ -/* We could queue by IRQ but that just complicates things on both ends */ -/* with very little gain in performance (how many instructions does */ -/* it take to iterate on the immediate queue). */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_irq_work(i2eBordStrPtr pB) -{ -#ifdef USE_IQI - if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) { -// Disable his interrupt (will be enabled when serviced) -// This is mostly to protect from reentrancy. - iiDisableMailIrq(pB); - -// Park the board on the immediate queue for processing. - schedule_work(&pB->tqueue_interrupt); - -// Make sure the immediate queue is flagged to fire. - } -#else - -// We are using immediate servicing here. This sucks and can -// cause all sorts of havoc with ppp and others. The failsafe -// check on iiSendPendingMail could also throw a hairball. - - i2ServiceBoard( pB ); - -#endif /* USE_IQI */ -} - -static void -ip2_polled_interrupt(void) -{ - int i; - i2eBordStrPtr pB; - - ip2trace(ITRC_NO_PORT, ITRC_INTR, 99, 1, 0); - - /* Service just the boards on the list using this irq */ - for( i = 0; i < i2nBoards; ++i ) { - pB = i2BoardPtrTable[i]; - -// Only process those boards which match our IRQ. -// IRQ = 0 for polled boards, we won't poll "IRQ" boards - - if (pB && pB->i2eUsingIrq == 0) - ip2_irq_work(pB); - } - - ++irq_counter; - - ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); -} - -static irqreturn_t -ip2_interrupt(int irq, void *dev_id) -{ - i2eBordStrPtr pB = dev_id; - - ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq ); - - ip2_irq_work(pB); - - ++irq_counter; - - ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); - return IRQ_HANDLED; -} - -/******************************************************************************/ -/* Function: ip2_poll(unsigned long arg) */ -/* Parameters: ? */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* This function calls the library routine i2ServiceBoard for each board in */ -/* the board table. This is used instead of the interrupt routine when polled */ -/* mode is specified. */ -/******************************************************************************/ -static void -ip2_poll(unsigned long arg) -{ - ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 ); - - // Just polled boards, IRQ = 0 will hit all non-interrupt boards. - // It will NOT poll boards handled by hard interrupts. - // The issue of queued BH interrupts is handled in ip2_interrupt(). - ip2_polled_interrupt(); - - mod_timer(&PollTimer, POLL_TIMEOUT); - - ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); -} - -static void do_input(struct work_struct *work) -{ - i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input); - unsigned long flags; - - ip2trace(CHANN, ITRC_INPUT, 21, 0 ); - - // Data input - if ( pCh->pTTY != NULL ) { - read_lock_irqsave(&pCh->Ibuf_spinlock, flags); - if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { - read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - i2Input( pCh ); - } else - read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); - } else { - ip2trace(CHANN, ITRC_INPUT, 22, 0 ); - - i2InputFlush( pCh ); - } -} - -// code duplicated from n_tty (ldisc) -static inline void isig(int sig, struct tty_struct *tty, int flush) -{ - /* FIXME: This is completely bogus */ - if (tty->pgrp) - kill_pgrp(tty->pgrp, sig, 1); - if (flush || !L_NOFLSH(tty)) { - if ( tty->ldisc->ops->flush_buffer ) - tty->ldisc->ops->flush_buffer(tty); - i2InputFlush( tty->driver_data ); - } -} - -static void do_status(struct work_struct *work) -{ - i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status); - int status; - - status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) ); - - ip2trace (CHANN, ITRC_STATUS, 21, 1, status ); - - if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) { - if ( (status & I2_BRK) ) { - // code duplicated from n_tty (ldisc) - if (I_IGNBRK(pCh->pTTY)) - goto skip_this; - if (I_BRKINT(pCh->pTTY)) { - isig(SIGINT, pCh->pTTY, 1); - goto skip_this; - } - wake_up_interruptible(&pCh->pTTY->read_wait); - } -#ifdef NEVER_HAPPENS_AS_SETUP_XXX - // and can't work because we don't know the_char - // as the_char is reported on a separate path - // The intelligent board does this stuff as setup - { - char brkf = TTY_NORMAL; - unsigned char brkc = '\0'; - unsigned char tmp; - if ( (status & I2_BRK) ) { - brkf = TTY_BREAK; - brkc = '\0'; - } - else if (status & I2_PAR) { - brkf = TTY_PARITY; - brkc = the_char; - } else if (status & I2_FRA) { - brkf = TTY_FRAME; - brkc = the_char; - } else if (status & I2_OVR) { - brkf = TTY_OVERRUN; - brkc = the_char; - } - tmp = pCh->pTTY->real_raw; - pCh->pTTY->real_raw = 0; - pCh->pTTY->ldisc->ops.receive_buf( pCh->pTTY, &brkc, &brkf, 1 ); - pCh->pTTY->real_raw = tmp; - } -#endif /* NEVER_HAPPENS_AS_SETUP_XXX */ - } -skip_this: - - if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) { - wake_up_interruptible(&pCh->delta_msr_wait); - - if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) { - if ( status & I2_DCD ) { - if ( pCh->wopen ) { - wake_up_interruptible ( &pCh->open_wait ); - } - } else { - if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) { - tty_hangup( pCh->pTTY ); - } - } - } - } - - ip2trace (CHANN, ITRC_STATUS, 26, 0 ); -} - -/******************************************************************************/ -/* Device Open/Close/Ioctl Entry Point Section */ -/******************************************************************************/ - -/******************************************************************************/ -/* Function: open_sanity_check() */ -/* Parameters: Pointer to tty structure */ -/* Pointer to file structure */ -/* Returns: Success or failure */ -/* */ -/* Description: */ -/* Verifies the structure magic numbers and cross links. */ -/******************************************************************************/ -#ifdef IP2DEBUG_OPEN -static void -open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd ) -{ - if ( pBrd->i2eValid != I2E_MAGIC ) { - printk(KERN_ERR "IP2: invalid board structure\n" ); - } else if ( pBrd != pCh->pMyBord ) { - printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n", - pCh->pMyBord ); - } else if ( pBrd->i2eChannelCnt < pCh->port_index ) { - printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index ); - } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) { - } else { - printk(KERN_INFO "IP2: all pointers check out!\n" ); - } -} -#endif - - -/******************************************************************************/ -/* Function: ip2_open() */ -/* Parameters: Pointer to tty structure */ -/* Pointer to file structure */ -/* Returns: Success or failure */ -/* */ -/* Description: (MANDATORY) */ -/* A successful device open has to run a gauntlet of checks before it */ -/* completes. After some sanity checking and pointer setup, the function */ -/* blocks until all conditions are satisfied. It then initialises the port to */ -/* the default characteristics and returns. */ -/******************************************************************************/ -static int -ip2_open( PTTY tty, struct file *pFile ) -{ - wait_queue_t wait; - int rc = 0; - int do_clocal = 0; - i2ChanStrPtr pCh = DevTable[tty->index]; - - ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 ); - - if ( pCh == NULL ) { - return -ENODEV; - } - /* Setup pointer links in device and tty structures */ - pCh->pTTY = tty; - tty->driver_data = pCh; - -#ifdef IP2DEBUG_OPEN - printk(KERN_DEBUG \ - "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n", - tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index); - open_sanity_check ( pCh, pCh->pMyBord ); -#endif - - i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP); - pCh->dataSetOut |= (I2_DTR | I2_RTS); - serviceOutgoingFifo( pCh->pMyBord ); - - /* Block here until the port is ready (per serial and istallion) */ - /* - * 1. If the port is in the middle of closing wait for the completion - * and then return the appropriate error. - */ - init_waitqueue_entry(&wait, current); - add_wait_queue(&pCh->close_wait, &wait); - set_current_state( TASK_INTERRUPTIBLE ); - - if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) { - if ( pCh->flags & ASYNC_CLOSING ) { - tty_unlock(); - schedule(); - tty_lock(); - } - if ( tty_hung_up_p(pFile) ) { - set_current_state( TASK_RUNNING ); - remove_wait_queue(&pCh->close_wait, &wait); - return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS; - } - } - set_current_state( TASK_RUNNING ); - remove_wait_queue(&pCh->close_wait, &wait); - - /* - * 3. Handle a non-blocking open of a normal port. - */ - if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<flags |= ASYNC_NORMAL_ACTIVE; - goto noblock; - } - /* - * 4. Now loop waiting for the port to be free and carrier present - * (if required). - */ - if ( tty->termios->c_cflag & CLOCAL ) - do_clocal = 1; - -#ifdef IP2DEBUG_OPEN - printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal); -#endif - - ++pCh->wopen; - - init_waitqueue_entry(&wait, current); - add_wait_queue(&pCh->open_wait, &wait); - - for(;;) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); - pCh->dataSetOut |= (I2_DTR | I2_RTS); - set_current_state( TASK_INTERRUPTIBLE ); - serviceOutgoingFifo( pCh->pMyBord ); - if ( tty_hung_up_p(pFile) ) { - set_current_state( TASK_RUNNING ); - remove_wait_queue(&pCh->open_wait, &wait); - return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS; - } - if (!(pCh->flags & ASYNC_CLOSING) && - (do_clocal || (pCh->dataSetIn & I2_DCD) )) { - rc = 0; - break; - } - -#ifdef IP2DEBUG_OPEN - printk(KERN_DEBUG "ASYNC_CLOSING = %s\n", - (pCh->flags & ASYNC_CLOSING)?"True":"False"); - printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n"); -#endif - ip2trace (CHANN, ITRC_OPEN, 3, 2, 0, - (pCh->flags & ASYNC_CLOSING) ); - /* check for signal */ - if (signal_pending(current)) { - rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS); - break; - } - tty_unlock(); - schedule(); - tty_lock(); - } - set_current_state( TASK_RUNNING ); - remove_wait_queue(&pCh->open_wait, &wait); - - --pCh->wopen; //why count? - - ip2trace (CHANN, ITRC_OPEN, 4, 0 ); - - if (rc != 0 ) { - return rc; - } - pCh->flags |= ASYNC_NORMAL_ACTIVE; - -noblock: - - /* first open - Assign termios structure to port */ - if ( tty->count == 1 ) { - i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); - /* Now we must send the termios settings to the loadware */ - set_params( pCh, NULL ); - } - - /* - * Now set any i2lib options. These may go away if the i2lib code ends - * up rolled into the mainline. - */ - pCh->channelOptions |= CO_NBLOCK_WRITE; - -#ifdef IP2DEBUG_OPEN - printk (KERN_DEBUG "IP2: open completed\n" ); -#endif - serviceOutgoingFifo( pCh->pMyBord ); - - ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 ); - - return 0; -} - -/******************************************************************************/ -/* Function: ip2_close() */ -/* Parameters: Pointer to tty structure */ -/* Pointer to file structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_close( PTTY tty, struct file *pFile ) -{ - i2ChanStrPtr pCh = tty->driver_data; - - if ( !pCh ) { - return; - } - - ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 ); - -#ifdef IP2DEBUG_OPEN - printk(KERN_DEBUG "IP2:close %s:\n",tty->name); -#endif - - if ( tty_hung_up_p ( pFile ) ) { - - ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 ); - - return; - } - if ( tty->count > 1 ) { /* not the last close */ - - ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 ); - - return; - } - pCh->flags |= ASYNC_CLOSING; // last close actually - - tty->closing = 1; - - if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) { - /* - * Before we drop DTR, make sure the transmitter has completely drained. - * This uses an timeout, after which the close - * completes. - */ - ip2_wait_until_sent(tty, pCh->ClosingWaitTime ); - } - /* - * At this point we stop accepting input. Here we flush the channel - * input buffer which will allow the board to send up more data. Any - * additional input is tossed at interrupt/poll time. - */ - i2InputFlush( pCh ); - - /* disable DSS reporting */ - i2QueueCommands(PTYPE_INLINE, pCh, 100, 4, - CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); - if (tty->termios->c_cflag & HUPCL) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); - pCh->dataSetOut &= ~(I2_DTR | I2_RTS); - i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); - } - - serviceOutgoingFifo ( pCh->pMyBord ); - - tty_ldisc_flush(tty); - tty_driver_flush_buffer(tty); - tty->closing = 0; - - pCh->pTTY = NULL; - - if (pCh->wopen) { - if (pCh->ClosingDelay) { - msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay)); - } - wake_up_interruptible(&pCh->open_wait); - } - - pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - wake_up_interruptible(&pCh->close_wait); - -#ifdef IP2DEBUG_OPEN - DBG_CNT("ip2_close: after wakeups--"); -#endif - - - ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 ); - - return; -} - -/******************************************************************************/ -/* Function: ip2_hangup() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_hangup ( PTTY tty ) -{ - i2ChanStrPtr pCh = tty->driver_data; - - if( !pCh ) { - return; - } - - ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 ); - - ip2_flush_buffer(tty); - - /* disable DSS reporting */ - - i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP); - i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); - if ( (tty->termios->c_cflag & HUPCL) ) { - i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN); - pCh->dataSetOut &= ~(I2_DTR | I2_RTS); - i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); - } - i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, - CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); - serviceOutgoingFifo ( pCh->pMyBord ); - - wake_up_interruptible ( &pCh->delta_msr_wait ); - - pCh->flags &= ~ASYNC_NORMAL_ACTIVE; - pCh->pTTY = NULL; - wake_up_interruptible ( &pCh->open_wait ); - - ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 ); -} - -/******************************************************************************/ -/******************************************************************************/ -/* Device Output Section */ -/******************************************************************************/ -/******************************************************************************/ - -/******************************************************************************/ -/* Function: ip2_write() */ -/* Parameters: Pointer to tty structure */ -/* Flag denoting data is in user (1) or kernel (0) space */ -/* Pointer to data */ -/* Number of bytes to write */ -/* Returns: Number of bytes actually written */ -/* */ -/* Description: (MANDATORY) */ -/* */ -/* */ -/******************************************************************************/ -static int -ip2_write( PTTY tty, const unsigned char *pData, int count) -{ - i2ChanStrPtr pCh = tty->driver_data; - int bytesSent = 0; - unsigned long flags; - - ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 ); - - /* Flush out any buffered data left over from ip2_putchar() calls. */ - ip2_flush_chars( tty ); - - /* This is the actual move bit. Make sure it does what we need!!!!! */ - write_lock_irqsave(&pCh->Pbuf_spinlock, flags); - bytesSent = i2Output( pCh, pData, count); - write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); - - ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); - - return bytesSent > 0 ? bytesSent : 0; -} - -/******************************************************************************/ -/* Function: ip2_putchar() */ -/* Parameters: Pointer to tty structure */ -/* Character to write */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static int -ip2_putchar( PTTY tty, unsigned char ch ) -{ - i2ChanStrPtr pCh = tty->driver_data; - unsigned long flags; - -// ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch ); - - write_lock_irqsave(&pCh->Pbuf_spinlock, flags); - pCh->Pbuf[pCh->Pbuf_stuff++] = ch; - if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { - write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); - ip2_flush_chars( tty ); - } else - write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); - return 1; - -// ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch ); -} - -/******************************************************************************/ -/* Function: ip2_flush_chars() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/******************************************************************************/ -static void -ip2_flush_chars( PTTY tty ) -{ - int strip; - i2ChanStrPtr pCh = tty->driver_data; - unsigned long flags; - - write_lock_irqsave(&pCh->Pbuf_spinlock, flags); - if ( pCh->Pbuf_stuff ) { - -// ip2trace (CHANN, ITRC_PUTC, 10, 1, strip ); - - // - // We may need to restart i2Output if it does not fullfill this request - // - strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff); - if ( strip != pCh->Pbuf_stuff ) { - memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip ); - } - pCh->Pbuf_stuff -= strip; - } - write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); -} - -/******************************************************************************/ -/* Function: ip2_write_room() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Number of bytes that the driver can accept */ -/* */ -/* Description: */ -/* */ -/******************************************************************************/ -static int -ip2_write_room ( PTTY tty ) -{ - int bytesFree; - i2ChanStrPtr pCh = tty->driver_data; - unsigned long flags; - - read_lock_irqsave(&pCh->Pbuf_spinlock, flags); - bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; - read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); - - ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree ); - - return ((bytesFree > 0) ? bytesFree : 0); -} - -/******************************************************************************/ -/* Function: ip2_chars_in_buf() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Number of bytes queued for transmission */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static int -ip2_chars_in_buf ( PTTY tty ) -{ - i2ChanStrPtr pCh = tty->driver_data; - int rc; - unsigned long flags; - - ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff ); - -#ifdef IP2DEBUG_WRITE - printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n", - pCh->Obuf_char_count + pCh->Pbuf_stuff, - pCh->Obuf_char_count, pCh->Pbuf_stuff ); -#endif - read_lock_irqsave(&pCh->Obuf_spinlock, flags); - rc = pCh->Obuf_char_count; - read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); - read_lock_irqsave(&pCh->Pbuf_spinlock, flags); - rc += pCh->Pbuf_stuff; - read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); - return rc; -} - -/******************************************************************************/ -/* Function: ip2_flush_buffer() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_flush_buffer( PTTY tty ) -{ - i2ChanStrPtr pCh = tty->driver_data; - unsigned long flags; - - ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 ); - -#ifdef IP2DEBUG_WRITE - printk (KERN_DEBUG "IP2: flush buffer\n" ); -#endif - write_lock_irqsave(&pCh->Pbuf_spinlock, flags); - pCh->Pbuf_stuff = 0; - write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); - i2FlushOutput( pCh ); - ip2_owake(tty); - - ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 ); - -} - -/******************************************************************************/ -/* Function: ip2_wait_until_sent() */ -/* Parameters: Pointer to tty structure */ -/* Timeout for wait. */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* This function is used in place of the normal tty_wait_until_sent, which */ -/* only waits for the driver buffers to be empty (or rather, those buffers */ -/* reported by chars_in_buffer) which doesn't work for IP2 due to the */ -/* indeterminate number of bytes buffered on the board. */ -/******************************************************************************/ -static void -ip2_wait_until_sent ( PTTY tty, int timeout ) -{ - int i = jiffies; - i2ChanStrPtr pCh = tty->driver_data; - - tty_wait_until_sent(tty, timeout ); - if ( (i = timeout - (jiffies -i)) > 0) - i2DrainOutput( pCh, i ); -} - -/******************************************************************************/ -/******************************************************************************/ -/* Device Input Section */ -/******************************************************************************/ -/******************************************************************************/ - -/******************************************************************************/ -/* Function: ip2_throttle() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_throttle ( PTTY tty ) -{ - i2ChanStrPtr pCh = tty->driver_data; - -#ifdef IP2DEBUG_READ - printk (KERN_DEBUG "IP2: throttle\n" ); -#endif - /* - * Signal the poll/interrupt handlers not to forward incoming data to - * the line discipline. This will cause the buffers to fill up in the - * library and thus cause the library routines to send the flow control - * stuff. - */ - pCh->throttled = 1; -} - -/******************************************************************************/ -/* Function: ip2_unthrottle() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_unthrottle ( PTTY tty ) -{ - i2ChanStrPtr pCh = tty->driver_data; - unsigned long flags; - -#ifdef IP2DEBUG_READ - printk (KERN_DEBUG "IP2: unthrottle\n" ); -#endif - - /* Pass incoming data up to the line discipline again. */ - pCh->throttled = 0; - i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); - serviceOutgoingFifo( pCh->pMyBord ); - read_lock_irqsave(&pCh->Ibuf_spinlock, flags); - if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { - read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); -#ifdef IP2DEBUG_READ - printk (KERN_DEBUG "i2Input called from unthrottle\n" ); -#endif - i2Input( pCh ); - } else - read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); -} - -static void -ip2_start ( PTTY tty ) -{ - i2ChanStrPtr pCh = DevTable[tty->index]; - - i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND); - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME); -#ifdef IP2DEBUG_WRITE - printk (KERN_DEBUG "IP2: start tx\n" ); -#endif -} - -static void -ip2_stop ( PTTY tty ) -{ - i2ChanStrPtr pCh = DevTable[tty->index]; - - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND); -#ifdef IP2DEBUG_WRITE - printk (KERN_DEBUG "IP2: stop tx\n" ); -#endif -} - -/******************************************************************************/ -/* Device Ioctl Section */ -/******************************************************************************/ - -static int ip2_tiocmget(struct tty_struct *tty) -{ - i2ChanStrPtr pCh = DevTable[tty->index]; -#ifdef ENABLE_DSSNOW - wait_queue_t wait; -#endif - - if (pCh == NULL) - return -ENODEV; - -/* - FIXME - the following code is causing a NULL pointer dereference in - 2.3.51 in an interrupt handler. It's suppose to prompt the board - to return the DSS signal status immediately. Why doesn't it do - the same thing in 2.2.14? -*/ - -/* This thing is still busted in the 1.2.12 driver on 2.4.x - and even hoses the serial console so the oops can be trapped. - /\/\|=mhw=|\/\/ */ - -#ifdef ENABLE_DSSNOW - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW); - - init_waitqueue_entry(&wait, current); - add_wait_queue(&pCh->dss_now_wait, &wait); - set_current_state( TASK_INTERRUPTIBLE ); - - serviceOutgoingFifo( pCh->pMyBord ); - - schedule(); - - set_current_state( TASK_RUNNING ); - remove_wait_queue(&pCh->dss_now_wait, &wait); - - if (signal_pending(current)) { - return -EINTR; - } -#endif - return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0) - | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0) - | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0) - | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0) - | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0) - | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0); -} - -static int ip2_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - i2ChanStrPtr pCh = DevTable[tty->index]; - - if (pCh == NULL) - return -ENODEV; - - if (set & TIOCM_RTS) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); - pCh->dataSetOut |= I2_RTS; - } - if (set & TIOCM_DTR) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); - pCh->dataSetOut |= I2_DTR; - } - - if (clear & TIOCM_RTS) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); - pCh->dataSetOut &= ~I2_RTS; - } - if (clear & TIOCM_DTR) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); - pCh->dataSetOut &= ~I2_DTR; - } - serviceOutgoingFifo( pCh->pMyBord ); - return 0; -} - -/******************************************************************************/ -/* Function: ip2_ioctl() */ -/* Parameters: Pointer to tty structure */ -/* Pointer to file structure */ -/* Command */ -/* Argument */ -/* Returns: Success or failure */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static int -ip2_ioctl ( PTTY tty, UINT cmd, ULONG arg ) -{ - wait_queue_t wait; - i2ChanStrPtr pCh = DevTable[tty->index]; - i2eBordStrPtr pB; - struct async_icount cprev, cnow; /* kernel counter temps */ - int rc = 0; - unsigned long flags; - void __user *argp = (void __user *)arg; - - if ( pCh == NULL ) - return -ENODEV; - - pB = pCh->pMyBord; - - ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg ); - -#ifdef IP2DEBUG_IOCTL - printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg ); -#endif - - switch(cmd) { - case TIOCGSERIAL: - - ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc ); - - rc = get_serial_info(pCh, argp); - if (rc) - return rc; - break; - - case TIOCSSERIAL: - - ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc ); - - rc = set_serial_info(pCh, argp); - if (rc) - return rc; - break; - - case TCXONC: - rc = tty_check_change(tty); - if (rc) - return rc; - switch (arg) { - case TCOOFF: - //return -ENOIOCTLCMD; - break; - case TCOON: - //return -ENOIOCTLCMD; - break; - case TCIOFF: - if (STOP_CHAR(tty) != __DISABLED_CHAR) { - i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, - CMD_XMIT_NOW(STOP_CHAR(tty))); - } - break; - case TCION: - if (START_CHAR(tty) != __DISABLED_CHAR) { - i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, - CMD_XMIT_NOW(START_CHAR(tty))); - } - break; - default: - return -EINVAL; - } - return 0; - - case TCSBRK: /* SVID version: non-zero arg --> no break */ - rc = tty_check_change(tty); - - ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc ); - - if (!rc) { - ip2_wait_until_sent(tty,0); - if (!arg) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250)); - serviceOutgoingFifo( pCh->pMyBord ); - } - } - break; - - case TCSBRKP: /* support for POSIX tcsendbreak() */ - rc = tty_check_change(tty); - - ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc ); - - if (!rc) { - ip2_wait_until_sent(tty,0); - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, - CMD_SEND_BRK(arg ? arg*100 : 250)); - serviceOutgoingFifo ( pCh->pMyBord ); - } - break; - - case TIOCGSOFTCAR: - - ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc ); - - rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); - if (rc) - return rc; - break; - - case TIOCSSOFTCAR: - - ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc ); - - rc = get_user(arg,(unsigned long __user *) argp); - if (rc) - return rc; - tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) - | (arg ? CLOCAL : 0)); - - break; - - /* - * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask - * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS - * for masking). Caller should use TIOCGICOUNT to see which one it was - */ - case TIOCMIWAIT: - write_lock_irqsave(&pB->read_fifo_spinlock, flags); - cprev = pCh->icount; /* note the counters on entry */ - write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, - CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); - init_waitqueue_entry(&wait, current); - add_wait_queue(&pCh->delta_msr_wait, &wait); - set_current_state( TASK_INTERRUPTIBLE ); - - serviceOutgoingFifo( pCh->pMyBord ); - for(;;) { - ip2trace (CHANN, ITRC_IOCTL, 10, 0 ); - - schedule(); - - ip2trace (CHANN, ITRC_IOCTL, 11, 0 ); - - /* see if a signal did it */ - if (signal_pending(current)) { - rc = -ERESTARTSYS; - break; - } - write_lock_irqsave(&pB->read_fifo_spinlock, flags); - cnow = pCh->icount; /* atomic copy */ - write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { - rc = -EIO; /* no change => rc */ - break; - } - if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { - rc = 0; - break; - } - cprev = cnow; - } - set_current_state( TASK_RUNNING ); - remove_wait_queue(&pCh->delta_msr_wait, &wait); - - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3, - CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); - if ( ! (pCh->flags & ASYNC_CHECK_CD)) { - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP); - } - serviceOutgoingFifo( pCh->pMyBord ); - return rc; - break; - - /* - * The rest are not supported by this driver. By returning -ENOIOCTLCMD they - * will be passed to the line discipline for it to handle. - */ - case TIOCSERCONFIG: - case TIOCSERGWILD: - case TIOCSERGETLSR: - case TIOCSERSWILD: - case TIOCSERGSTRUCT: - case TIOCSERGETMULTI: - case TIOCSERSETMULTI: - - default: - ip2trace (CHANN, ITRC_IOCTL, 12, 0 ); - - rc = -ENOIOCTLCMD; - break; - } - - ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 ); - - return rc; -} - -static int ip2_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) -{ - i2ChanStrPtr pCh = DevTable[tty->index]; - i2eBordStrPtr pB; - struct async_icount cnow; /* kernel counter temp */ - unsigned long flags; - - if ( pCh == NULL ) - return -ENODEV; - - pB = pCh->pMyBord; - - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for RI where - * only 0->1 is counted. The controller is quite capable of counting - * both, but this done to preserve compatibility with the standard - * serial driver. - */ - - write_lock_irqsave(&pB->read_fifo_spinlock, flags); - cnow = pCh->icount; - write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); - - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->frame = cnow.frame; - icount->overrun = cnow.overrun; - icount->parity = cnow.parity; - icount->brk = cnow.brk; - icount->buf_overrun = cnow.buf_overrun; - return 0; -} - -/******************************************************************************/ -/* Function: GetSerialInfo() */ -/* Parameters: Pointer to channel structure */ -/* Pointer to old termios structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* This is to support the setserial command, and requires processing of the */ -/* standard Linux serial structure. */ -/******************************************************************************/ -static int -get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo ) -{ - struct serial_struct tmp; - - memset ( &tmp, 0, sizeof(tmp) ); - tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16]; - if (BID_HAS_654(tmp.type)) { - tmp.type = PORT_16650; - } else { - tmp.type = PORT_CIRRUS; - } - tmp.line = pCh->port_index; - tmp.port = pCh->pMyBord->i2eBase; - tmp.irq = ip2config.irq[pCh->port_index/64]; - tmp.flags = pCh->flags; - tmp.baud_base = pCh->BaudBase; - tmp.close_delay = pCh->ClosingDelay; - tmp.closing_wait = pCh->ClosingWaitTime; - tmp.custom_divisor = pCh->BaudDivisor; - return copy_to_user(retinfo,&tmp,sizeof(*retinfo)); -} - -/******************************************************************************/ -/* Function: SetSerialInfo() */ -/* Parameters: Pointer to channel structure */ -/* Pointer to old termios structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* This function provides support for setserial, which uses the TIOCSSERIAL */ -/* ioctl. Not all setserial parameters are relevant. If the user attempts to */ -/* change the IRQ, address or type of the port the ioctl fails. */ -/******************************************************************************/ -static int -set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info ) -{ - struct serial_struct ns; - int old_flags, old_baud_divisor; - - if (copy_from_user(&ns, new_info, sizeof (ns))) - return -EFAULT; - - /* - * We don't allow setserial to change IRQ, board address, type or baud - * base. Also line nunber as such is meaningless but we use it for our - * array index so it is fixed also. - */ - if ( (ns.irq != ip2config.irq[pCh->port_index]) - || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase))) - || (ns.baud_base != pCh->BaudBase) - || (ns.line != pCh->port_index) ) { - return -EINVAL; - } - - old_flags = pCh->flags; - old_baud_divisor = pCh->BaudDivisor; - - if ( !capable(CAP_SYS_ADMIN) ) { - if ( ( ns.close_delay != pCh->ClosingDelay ) || - ( (ns.flags & ~ASYNC_USR_MASK) != - (pCh->flags & ~ASYNC_USR_MASK) ) ) { - return -EPERM; - } - - pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) | - (ns.flags & ASYNC_USR_MASK); - pCh->BaudDivisor = ns.custom_divisor; - } else { - pCh->flags = (pCh->flags & ~ASYNC_FLAGS) | - (ns.flags & ASYNC_FLAGS); - pCh->BaudDivisor = ns.custom_divisor; - pCh->ClosingDelay = ns.close_delay * HZ/100; - pCh->ClosingWaitTime = ns.closing_wait * HZ/100; - } - - if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) ) - || (old_baud_divisor != pCh->BaudDivisor) ) { - // Invalidate speed and reset parameters - set_params( pCh, NULL ); - } - - return 0; -} - -/******************************************************************************/ -/* Function: ip2_set_termios() */ -/* Parameters: Pointer to tty structure */ -/* Pointer to old termios structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_set_termios( PTTY tty, struct ktermios *old_termios ) -{ - i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data; - -#ifdef IP2DEBUG_IOCTL - printk (KERN_DEBUG "IP2: set termios %p\n", old_termios ); -#endif - - set_params( pCh, old_termios ); -} - -/******************************************************************************/ -/* Function: ip2_set_line_discipline() */ -/* Parameters: Pointer to tty structure */ -/* Returns: Nothing */ -/* */ -/* Description: Does nothing */ -/* */ -/* */ -/******************************************************************************/ -static void -ip2_set_line_discipline ( PTTY tty ) -{ -#ifdef IP2DEBUG_IOCTL - printk (KERN_DEBUG "IP2: set line discipline\n" ); -#endif - - ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 ); - -} - -/******************************************************************************/ -/* Function: SetLine Characteristics() */ -/* Parameters: Pointer to channel structure */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* This routine is called to update the channel structure with the new line */ -/* characteristics, and send the appropriate commands to the board when they */ -/* change. */ -/******************************************************************************/ -static void -set_params( i2ChanStrPtr pCh, struct ktermios *o_tios ) -{ - tcflag_t cflag, iflag, lflag; - char stop_char, start_char; - struct ktermios dummy; - - lflag = pCh->pTTY->termios->c_lflag; - cflag = pCh->pTTY->termios->c_cflag; - iflag = pCh->pTTY->termios->c_iflag; - - if (o_tios == NULL) { - dummy.c_lflag = ~lflag; - dummy.c_cflag = ~cflag; - dummy.c_iflag = ~iflag; - o_tios = &dummy; - } - - { - switch ( cflag & CBAUD ) { - case B0: - i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); - pCh->dataSetOut &= ~(I2_DTR | I2_RTS); - i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); - pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag); - goto service_it; - break; - case B38400: - /* - * This is the speed that is overloaded with all the other high - * speeds, depending upon the flag settings. - */ - if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) { - pCh->speed = CBR_57600; - } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) { - pCh->speed = CBR_115200; - } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) { - pCh->speed = CBR_C1; - } else { - pCh->speed = CBR_38400; - } - break; - case B50: pCh->speed = CBR_50; break; - case B75: pCh->speed = CBR_75; break; - case B110: pCh->speed = CBR_110; break; - case B134: pCh->speed = CBR_134; break; - case B150: pCh->speed = CBR_150; break; - case B200: pCh->speed = CBR_200; break; - case B300: pCh->speed = CBR_300; break; - case B600: pCh->speed = CBR_600; break; - case B1200: pCh->speed = CBR_1200; break; - case B1800: pCh->speed = CBR_1800; break; - case B2400: pCh->speed = CBR_2400; break; - case B4800: pCh->speed = CBR_4800; break; - case B9600: pCh->speed = CBR_9600; break; - case B19200: pCh->speed = CBR_19200; break; - case B57600: pCh->speed = CBR_57600; break; - case B115200: pCh->speed = CBR_115200; break; - case B153600: pCh->speed = CBR_153600; break; - case B230400: pCh->speed = CBR_230400; break; - case B307200: pCh->speed = CBR_307200; break; - case B460800: pCh->speed = CBR_460800; break; - case B921600: pCh->speed = CBR_921600; break; - default: pCh->speed = CBR_9600; break; - } - if ( pCh->speed == CBR_C1 ) { - // Process the custom speed parameters. - int bps = pCh->BaudBase / pCh->BaudDivisor; - if ( bps == 921600 ) { - pCh->speed = CBR_921600; - } else { - bps = bps/10; - i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) ); - } - } - i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed)); - - i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); - pCh->dataSetOut |= (I2_DTR | I2_RTS); - } - if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) - { - i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, - CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1)); - } - if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) - { - i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, - CMD_SETPAR( - (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP) - ) - ); - } - /* byte size and parity */ - if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) - { - int datasize; - switch ( cflag & CSIZE ) { - case CS5: datasize = CSZ_5; break; - case CS6: datasize = CSZ_6; break; - case CS7: datasize = CSZ_7; break; - case CS8: datasize = CSZ_8; break; - default: datasize = CSZ_5; break; /* as per serial.c */ - } - i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) ); - } - /* Process CTS flow control flag setting */ - if ( (cflag & CRTSCTS) ) { - i2QueueCommands(PTYPE_INLINE, pCh, 100, - 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB); - } else { - i2QueueCommands(PTYPE_INLINE, pCh, 100, - 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); - } - // - // Process XON/XOFF flow control flags settings - // - stop_char = STOP_CHAR(pCh->pTTY); - start_char = START_CHAR(pCh->pTTY); - - //////////// can't be \000 - if (stop_char == __DISABLED_CHAR ) - { - stop_char = ~__DISABLED_CHAR; - } - if (start_char == __DISABLED_CHAR ) - { - start_char = ~__DISABLED_CHAR; - } - ///////////////////////////////// - - if ( o_tios->c_cc[VSTART] != start_char ) - { - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char)); - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char)); - } - if ( o_tios->c_cc[VSTOP] != stop_char ) - { - i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char)); - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char)); - } - if (stop_char == __DISABLED_CHAR ) - { - stop_char = ~__DISABLED_CHAR; //TEST123 - goto no_xoff; - } - if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) - { - if ( iflag & IXOFF ) { // Enable XOFF output flow control - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON)); - } else { // Disable XOFF output flow control -no_xoff: - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE)); - } - } - if (start_char == __DISABLED_CHAR ) - { - goto no_xon; - } - if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) - { - if ( iflag & IXON ) { - if ( iflag & IXANY ) { // Enable XON/XANY output flow control - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY)); - } else { // Enable XON output flow control - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON)); - } - } else { // Disable XON output flow control -no_xon: - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE)); - } - } - if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) - { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, - CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0))); - } - if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) - { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, - CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB)); - } - - if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) - ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) - { - char brkrpt = 0; - char parrpt = 0; - - if ( iflag & IGNBRK ) { /* Ignore breaks altogether */ - /* Ignore breaks altogether */ - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP); - } else { - if ( iflag & BRKINT ) { - if ( iflag & PARMRK ) { - brkrpt = 0x0a; // exception an inline triple - } else { - brkrpt = 0x1a; // exception and NULL - } - brkrpt |= 0x04; // flush input - } else { - if ( iflag & PARMRK ) { - brkrpt = 0x0b; //POSIX triple \0377 \0 \0 - } else { - brkrpt = 0x01; // Null only - } - } - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt)); - } - - if (iflag & IGNPAR) { - parrpt = 0x20; - /* would be 2 for not cirrus bug */ - /* would be 0x20 cept for cirrus bug */ - } else { - if ( iflag & PARMRK ) { - /* - * Replace error characters with 3-byte sequence (\0377,\0,char) - */ - parrpt = 0x04 ; - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0)); - } else { - parrpt = 0x03; - } - } - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt)); - } - if (cflag & CLOCAL) { - // Status reporting fails for DCD if this is off - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); - pCh->flags &= ~ASYNC_CHECK_CD; - } else { - i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); - pCh->flags |= ASYNC_CHECK_CD; - } - -service_it: - i2DrainOutput( pCh, 100 ); -} - -/******************************************************************************/ -/* IPL Device Section */ -/******************************************************************************/ - -/******************************************************************************/ -/* Function: ip2_ipl_read() */ -/* Parameters: Pointer to device inode */ -/* Pointer to file structure */ -/* Pointer to data */ -/* Number of bytes to read */ -/* Returns: Success or failure */ -/* */ -/* Description: Ugly */ -/* */ -/* */ -/******************************************************************************/ - -static -ssize_t -ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off ) -{ - unsigned int minor = iminor(pFile->f_path.dentry->d_inode); - int rc = 0; - -#ifdef IP2DEBUG_IPL - printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count ); -#endif - - switch( minor ) { - case 0: // IPL device - rc = -EINVAL; - break; - case 1: // Status dump - rc = -EINVAL; - break; - case 2: // Ping device - rc = -EINVAL; - break; - case 3: // Trace device - rc = DumpTraceBuffer ( pData, count ); - break; - case 4: // Trace device - rc = DumpFifoBuffer ( pData, count ); - break; - default: - rc = -ENODEV; - break; - } - return rc; -} - -static int -DumpFifoBuffer ( char __user *pData, int count ) -{ -#ifdef DEBUG_FIFO - int rc; - rc = copy_to_user(pData, DBGBuf, count); - - printk(KERN_DEBUG "Last index %d\n", I ); - - return count; -#endif /* DEBUG_FIFO */ - return 0; -} - -static int -DumpTraceBuffer ( char __user *pData, int count ) -{ -#ifdef IP2DEBUG_TRACE - int rc; - int dumpcount; - int chunk; - int *pIndex = (int __user *)pData; - - if ( count < (sizeof(int) * 6) ) { - return -EIO; - } - rc = put_user(tracewrap, pIndex ); - rc = put_user(TRACEMAX, ++pIndex ); - rc = put_user(tracestrip, ++pIndex ); - rc = put_user(tracestuff, ++pIndex ); - pData += sizeof(int) * 6; - count -= sizeof(int) * 6; - - dumpcount = tracestuff - tracestrip; - if ( dumpcount < 0 ) { - dumpcount += TRACEMAX; - } - if ( dumpcount > count ) { - dumpcount = count; - } - chunk = TRACEMAX - tracestrip; - if ( dumpcount > chunk ) { - rc = copy_to_user(pData, &tracebuf[tracestrip], - chunk * sizeof(tracebuf[0]) ); - pData += chunk * sizeof(tracebuf[0]); - tracestrip = 0; - chunk = dumpcount - chunk; - } else { - chunk = dumpcount; - } - rc = copy_to_user(pData, &tracebuf[tracestrip], - chunk * sizeof(tracebuf[0]) ); - tracestrip += chunk; - tracewrap = 0; - - rc = put_user(tracestrip, ++pIndex ); - rc = put_user(tracestuff, ++pIndex ); - - return dumpcount; -#else - return 0; -#endif -} - -/******************************************************************************/ -/* Function: ip2_ipl_write() */ -/* Parameters: */ -/* Pointer to file structure */ -/* Pointer to data */ -/* Number of bytes to write */ -/* Returns: Success or failure */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static ssize_t -ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off) -{ -#ifdef IP2DEBUG_IPL - printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count ); -#endif - return 0; -} - -/******************************************************************************/ -/* Function: ip2_ipl_ioctl() */ -/* Parameters: Pointer to device inode */ -/* Pointer to file structure */ -/* Command */ -/* Argument */ -/* Returns: Success or failure */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static long -ip2_ipl_ioctl (struct file *pFile, UINT cmd, ULONG arg ) -{ - unsigned int iplminor = iminor(pFile->f_path.dentry->d_inode); - int rc = 0; - void __user *argp = (void __user *)arg; - ULONG __user *pIndex = argp; - i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4]; - i2ChanStrPtr pCh; - -#ifdef IP2DEBUG_IPL - printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg ); -#endif - - mutex_lock(&ip2_mutex); - - switch ( iplminor ) { - case 0: // IPL device - rc = -EINVAL; - break; - case 1: // Status dump - case 5: - case 9: - case 13: - switch ( cmd ) { - case 64: /* Driver - ip2stat */ - rc = put_user(-1, pIndex++ ); - rc = put_user(irq_counter, pIndex++ ); - rc = put_user(bh_counter, pIndex++ ); - break; - - case 65: /* Board - ip2stat */ - if ( pB ) { - rc = copy_to_user(argp, pB, sizeof(i2eBordStr)); - rc = put_user(inb(pB->i2eStatus), - (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); - } else { - rc = -ENODEV; - } - break; - - default: - if (cmd < IP2_MAX_PORTS) { - pCh = DevTable[cmd]; - if ( pCh ) - { - rc = copy_to_user(argp, pCh, sizeof(i2ChanStr)); - if (rc) - rc = -EFAULT; - } else { - rc = -ENODEV; - } - } else { - rc = -EINVAL; - } - } - break; - - case 2: // Ping device - rc = -EINVAL; - break; - case 3: // Trace device - /* - * akpm: This used to write a whole bunch of function addresses - * to userspace, which generated lots of put_user() warnings. - * I killed it all. Just return "success" and don't do - * anything. - */ - if (cmd == 1) - rc = 0; - else - rc = -EINVAL; - break; - - default: - rc = -ENODEV; - break; - } - mutex_unlock(&ip2_mutex); - return rc; -} - -/******************************************************************************/ -/* Function: ip2_ipl_open() */ -/* Parameters: Pointer to device inode */ -/* Pointer to file structure */ -/* Returns: Success or failure */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -static int -ip2_ipl_open( struct inode *pInode, struct file *pFile ) -{ - -#ifdef IP2DEBUG_IPL - printk (KERN_DEBUG "IP2IPL: open\n" ); -#endif - return 0; -} - -static int -proc_ip2mem_show(struct seq_file *m, void *v) -{ - i2eBordStrPtr pB; - i2ChanStrPtr pCh; - PTTY tty; - int i; - -#define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" -#define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" -#define FMTLIN3 " 0x%04x 0x%04x rc flow\n" - - seq_printf(m,"\n"); - - for( i = 0; i < IP2_MAX_BOARDS; ++i ) { - pB = i2BoardPtrTable[i]; - if ( pB ) { - seq_printf(m,"board %d:\n",i); - seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n", - pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); - } - } - - seq_printf(m,"#: tty flags, port flags, cflags, iflags\n"); - for (i=0; i < IP2_MAX_PORTS; i++) { - pCh = DevTable[i]; - if (pCh) { - tty = pCh->pTTY; - if (tty && tty->count) { - seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags, - tty->termios->c_cflag,tty->termios->c_iflag); - - seq_printf(m,FMTLIN2, - pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); - seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room); - } - } - } - return 0; -} - -static int proc_ip2mem_open(struct inode *inode, struct file *file) -{ - return single_open(file, proc_ip2mem_show, NULL); -} - -static const struct file_operations ip2mem_proc_fops = { - .owner = THIS_MODULE, - .open = proc_ip2mem_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* - * This is the handler for /proc/tty/driver/ip2 - * - * This stretch of code has been largely plagerized from at least three - * different sources including ip2mkdev.c and a couple of other drivers. - * The bugs are all mine. :-) =mhw= - */ -static int ip2_proc_show(struct seq_file *m, void *v) -{ - int i, j, box; - int boxes = 0; - int ports = 0; - int tports = 0; - i2eBordStrPtr pB; - char *sep; - - seq_printf(m, "ip2info: 1.0 driver: %s\n", pcVersion); - seq_printf(m, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n", - IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR, - IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX); - - for( i = 0; i < IP2_MAX_BOARDS; ++i ) { - /* This need to be reset for a board by board count... */ - boxes = 0; - pB = i2BoardPtrTable[i]; - if( pB ) { - switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) - { - case POR_ID_FIIEX: - seq_printf(m, "Board %d: EX ports=", i); - sep = ""; - for( box = 0; box < ABS_MAX_BOXES; ++box ) - { - ports = 0; - - if( pB->i2eChannelMap[box] != 0 ) ++boxes; - for( j = 0; j < ABS_BIGGEST_BOX; ++j ) - { - if( pB->i2eChannelMap[box] & 1<< j ) { - ++ports; - } - } - seq_printf(m, "%s%d", sep, ports); - sep = ","; - tports += ports; - } - seq_printf(m, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8); - break; - - case POR_ID_II_4: - seq_printf(m, "Board %d: ISA-4 ports=4 boxes=1", i); - tports = ports = 4; - break; - - case POR_ID_II_8: - seq_printf(m, "Board %d: ISA-8-std ports=8 boxes=1", i); - tports = ports = 8; - break; - - case POR_ID_II_8R: - seq_printf(m, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i); - tports = ports = 8; - break; - - default: - seq_printf(m, "Board %d: unknown", i); - /* Don't try and probe for minor numbers */ - tports = ports = 0; - } - - } else { - /* Don't try and probe for minor numbers */ - seq_printf(m, "Board %d: vacant", i); - tports = ports = 0; - } - - if( tports ) { - seq_puts(m, " minors="); - sep = ""; - for ( box = 0; box < ABS_MAX_BOXES; ++box ) - { - for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) - { - if ( pB->i2eChannelMap[box] & (1 << j) ) - { - seq_printf(m, "%s%d", sep, - j + ABS_BIGGEST_BOX * - (box+i*ABS_MAX_BOXES)); - sep = ","; - } - } - } - } - seq_putc(m, '\n'); - } - return 0; - } - -static int ip2_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, ip2_proc_show, NULL); -} - -static const struct file_operations ip2_proc_fops = { - .owner = THIS_MODULE, - .open = ip2_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/******************************************************************************/ -/* Function: ip2trace() */ -/* Parameters: Value to add to trace buffer */ -/* Returns: Nothing */ -/* */ -/* Description: */ -/* */ -/* */ -/******************************************************************************/ -#ifdef IP2DEBUG_TRACE -void -ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...) -{ - long flags; - unsigned long *pCode = &codes; - union ip2breadcrumb bc; - i2ChanStrPtr pCh; - - - tracebuf[tracestuff++] = jiffies; - if ( tracestuff == TRACEMAX ) { - tracestuff = 0; - } - if ( tracestuff == tracestrip ) { - if ( ++tracestrip == TRACEMAX ) { - tracestrip = 0; - } - ++tracewrap; - } - - bc.hdr.port = 0xff & pn; - bc.hdr.cat = cat; - bc.hdr.codes = (unsigned char)( codes & 0xff ); - bc.hdr.label = label; - tracebuf[tracestuff++] = bc.value; - - for (;;) { - if ( tracestuff == TRACEMAX ) { - tracestuff = 0; - } - if ( tracestuff == tracestrip ) { - if ( ++tracestrip == TRACEMAX ) { - tracestrip = 0; - } - ++tracewrap; - } - - if ( !codes-- ) - break; - - tracebuf[tracestuff++] = *++pCode; - } -} -#endif - - -MODULE_LICENSE("GPL"); - -static struct pci_device_id ip2main_pci_tbl[] __devinitdata __used = { - { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) }, - { } -}; - -MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl); - -MODULE_FIRMWARE("intelliport2.bin"); diff --git a/drivers/char/ip2/ip2trace.h b/drivers/char/ip2/ip2trace.h deleted file mode 100644 index da20435dc8a6..000000000000 --- a/drivers/char/ip2/ip2trace.h +++ /dev/null @@ -1,42 +0,0 @@ - -// -union ip2breadcrumb -{ - struct { - unsigned char port, cat, codes, label; - } __attribute__ ((packed)) hdr; - unsigned long value; -}; - -#define ITRC_NO_PORT 0xFF -#define CHANN (pCh->port_index) - -#define ITRC_ERROR '!' -#define ITRC_INIT 'A' -#define ITRC_OPEN 'B' -#define ITRC_CLOSE 'C' -#define ITRC_DRAIN 'D' -#define ITRC_IOCTL 'E' -#define ITRC_FLUSH 'F' -#define ITRC_STATUS 'G' -#define ITRC_HANGUP 'H' -#define ITRC_INTR 'I' -#define ITRC_SFLOW 'J' -#define ITRC_SBCMD 'K' -#define ITRC_SICMD 'L' -#define ITRC_MODEM 'M' -#define ITRC_INPUT 'N' -#define ITRC_OUTPUT 'O' -#define ITRC_PUTC 'P' -#define ITRC_QUEUE 'Q' -#define ITRC_STFLW 'R' -#define ITRC_SFIFO 'S' -#define ITRC_VERIFY 'V' -#define ITRC_WRITE 'W' - -#define ITRC_ENTER 0x00 -#define ITRC_RETURN 0xFF - -#define ITRC_QUEUE_ROOM 2 -#define ITRC_QUEUE_CMD 6 - diff --git a/drivers/char/ip2/ip2types.h b/drivers/char/ip2/ip2types.h deleted file mode 100644 index 9d67b260b2f6..000000000000 --- a/drivers/char/ip2/ip2types.h +++ /dev/null @@ -1,57 +0,0 @@ -/******************************************************************************* -* -* (c) 1998 by Computone Corporation -* -******************************************************************************** -* -* -* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport -* serial I/O controllers. -* -* DESCRIPTION: Driver constants and type definitions. -* -* NOTES: -* -*******************************************************************************/ -#ifndef IP2TYPES_H -#define IP2TYPES_H - -//************* -//* Constants * -//************* - -// Define some limits for this driver. Ports per board is a hardware limitation -// that will not change. Current hardware limits this to 64 ports per board. -// Boards per driver is a self-imposed limit. -// -#define IP2_MAX_BOARDS 4 -#define IP2_PORTS_PER_BOARD ABS_MOST_PORTS -#define IP2_MAX_PORTS (IP2_MAX_BOARDS*IP2_PORTS_PER_BOARD) - -#define ISA 0 -#define PCI 1 -#define EISA 2 - -//******************** -//* Type Definitions * -//******************** - -typedef struct tty_struct * PTTY; -typedef wait_queue_head_t PWAITQ; - -typedef unsigned char UCHAR; -typedef unsigned int UINT; -typedef unsigned short USHORT; -typedef unsigned long ULONG; - -typedef struct -{ - short irq[IP2_MAX_BOARDS]; - unsigned short addr[IP2_MAX_BOARDS]; - int type[IP2_MAX_BOARDS]; -#ifdef CONFIG_PCI - struct pci_dev *pci_dev[IP2_MAX_BOARDS]; -#endif -} ip2config_t; - -#endif diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c deleted file mode 100644 index 0b266272cccd..000000000000 --- a/drivers/char/istallion.c +++ /dev/null @@ -1,4507 +0,0 @@ -/*****************************************************************************/ - -/* - * istallion.c -- stallion intelligent multiport serial driver. - * - * Copyright (C) 1996-1999 Stallion Technologies - * Copyright (C) 1994-1996 Greg Ungerer. - * - * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - */ - -/*****************************************************************************/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - -/*****************************************************************************/ - -/* - * Define different board types. Not all of the following board types - * are supported by this driver. But I will use the standard "assigned" - * board numbers. Currently supported boards are abbreviated as: - * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and - * STAL = Stallion. - */ -#define BRD_UNKNOWN 0 -#define BRD_STALLION 1 -#define BRD_BRUMBY4 2 -#define BRD_ONBOARD2 3 -#define BRD_ONBOARD 4 -#define BRD_ONBOARDE 7 -#define BRD_ECP 23 -#define BRD_ECPE 24 -#define BRD_ECPMC 25 -#define BRD_ECPPCI 29 - -#define BRD_BRUMBY BRD_BRUMBY4 - -/* - * Define a configuration structure to hold the board configuration. - * Need to set this up in the code (for now) with the boards that are - * to be configured into the system. This is what needs to be modified - * when adding/removing/modifying boards. Each line entry in the - * stli_brdconf[] array is a board. Each line contains io/irq/memory - * ranges for that board (as well as what type of board it is). - * Some examples: - * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, - * This line will configure an EasyConnection 8/64 at io address 2a0, - * and shared memory address of cc000. Multiple EasyConnection 8/64 - * boards can share the same shared memory address space. No interrupt - * is required for this board type. - * Another example: - * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, - * This line will configure an EasyConnection 8/64 EISA in slot 5 and - * shared memory address of 0x80000000 (2 GByte). Multiple - * EasyConnection 8/64 EISA boards can share the same shared memory - * address space. No interrupt is required for this board type. - * Another example: - * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, - * This line will configure an ONboard (ISA type) at io address 240, - * and shared memory address of d0000. Multiple ONboards can share - * the same shared memory address space. No interrupt required. - * Another example: - * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, - * This line will configure a Brumby board (any number of ports!) at - * io address 360 and shared memory address of c8000. All Brumby boards - * configured into a system must have their own separate io and memory - * addresses. No interrupt is required. - * Another example: - * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, - * This line will configure an original Stallion board at io address 330 - * and shared memory address d0000 (this would only be valid for a "V4.0" - * or Rev.O Stallion board). All Stallion boards configured into the - * system must have their own separate io and memory addresses. No - * interrupt is required. - */ - -struct stlconf { - int brdtype; - int ioaddr1; - int ioaddr2; - unsigned long memaddr; - int irq; - int irqtype; -}; - -static unsigned int stli_nrbrds; - -/* stli_lock must NOT be taken holding brd_lock */ -static spinlock_t stli_lock; /* TTY logic lock */ -static spinlock_t brd_lock; /* Board logic lock */ - -/* - * There is some experimental EISA board detection code in this driver. - * By default it is disabled, but for those that want to try it out, - * then set the define below to be 1. - */ -#define STLI_EISAPROBE 0 - -/*****************************************************************************/ - -/* - * Define some important driver characteristics. Device major numbers - * allocated as per Linux Device Registry. - */ -#ifndef STL_SIOMEMMAJOR -#define STL_SIOMEMMAJOR 28 -#endif -#ifndef STL_SERIALMAJOR -#define STL_SERIALMAJOR 24 -#endif -#ifndef STL_CALLOUTMAJOR -#define STL_CALLOUTMAJOR 25 -#endif - -/*****************************************************************************/ - -/* - * Define our local driver identity first. Set up stuff to deal with - * all the local structures required by a serial tty driver. - */ -static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; -static char *stli_drvname = "istallion"; -static char *stli_drvversion = "5.6.0"; -static char *stli_serialname = "ttyE"; - -static struct tty_driver *stli_serial; -static const struct tty_port_operations stli_port_ops; - -#define STLI_TXBUFSIZE 4096 - -/* - * Use a fast local buffer for cooked characters. Typically a whole - * bunch of cooked characters come in for a port, 1 at a time. So we - * save those up into a local buffer, then write out the whole lot - * with a large memcpy. Just use 1 buffer for all ports, since its - * use it is only need for short periods of time by each port. - */ -static char *stli_txcookbuf; -static int stli_txcooksize; -static int stli_txcookrealsize; -static struct tty_struct *stli_txcooktty; - -/* - * Define a local default termios struct. All ports will be created - * with this termios initially. Basically all it defines is a raw port - * at 9600 baud, 8 data bits, no parity, 1 stop bit. - */ -static struct ktermios stli_deftermios = { - .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), - .c_cc = INIT_C_CC, - .c_ispeed = 9600, - .c_ospeed = 9600, -}; - -/* - * Define global stats structures. Not used often, and can be - * re-used for each stats call. - */ -static comstats_t stli_comstats; -static combrd_t stli_brdstats; -static struct asystats stli_cdkstats; - -/*****************************************************************************/ - -static DEFINE_MUTEX(stli_brdslock); -static struct stlibrd *stli_brds[STL_MAXBRDS]; - -static int stli_shared; - -/* - * Per board state flags. Used with the state field of the board struct. - * Not really much here... All we need to do is keep track of whether - * the board has been detected, and whether it is actually running a slave - * or not. - */ -#define BST_FOUND 0 -#define BST_STARTED 1 -#define BST_PROBED 2 - -/* - * Define the set of port state flags. These are marked for internal - * state purposes only, usually to do with the state of communications - * with the slave. Most of them need to be updated atomically, so always - * use the bit setting operations (unless protected by cli/sti). - */ -#define ST_OPENING 2 -#define ST_CLOSING 3 -#define ST_CMDING 4 -#define ST_TXBUSY 5 -#define ST_RXING 6 -#define ST_DOFLUSHRX 7 -#define ST_DOFLUSHTX 8 -#define ST_DOSIGS 9 -#define ST_RXSTOP 10 -#define ST_GETSIGS 11 - -/* - * Define an array of board names as printable strings. Handy for - * referencing boards when printing trace and stuff. - */ -static char *stli_brdnames[] = { - "Unknown", - "Stallion", - "Brumby", - "ONboard-MC", - "ONboard", - "Brumby", - "Brumby", - "ONboard-EI", - NULL, - "ONboard", - "ONboard-MC", - "ONboard-MC", - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - "EasyIO", - "EC8/32-AT", - "EC8/32-MC", - "EC8/64-AT", - "EC8/64-EI", - "EC8/64-MC", - "EC8/32-PCI", - "EC8/64-PCI", - "EasyIO-PCI", - "EC/RA-PCI", -}; - -/*****************************************************************************/ - -/* - * Define some string labels for arguments passed from the module - * load line. These allow for easy board definitions, and easy - * modification of the io, memory and irq resoucres. - */ - -static char *board0[8]; -static char *board1[8]; -static char *board2[8]; -static char *board3[8]; - -static char **stli_brdsp[] = { - (char **) &board0, - (char **) &board1, - (char **) &board2, - (char **) &board3 -}; - -/* - * Define a set of common board names, and types. This is used to - * parse any module arguments. - */ - -static struct stlibrdtype { - char *name; - int type; -} stli_brdstr[] = { - { "stallion", BRD_STALLION }, - { "1", BRD_STALLION }, - { "brumby", BRD_BRUMBY }, - { "brumby4", BRD_BRUMBY }, - { "brumby/4", BRD_BRUMBY }, - { "brumby-4", BRD_BRUMBY }, - { "brumby8", BRD_BRUMBY }, - { "brumby/8", BRD_BRUMBY }, - { "brumby-8", BRD_BRUMBY }, - { "brumby16", BRD_BRUMBY }, - { "brumby/16", BRD_BRUMBY }, - { "brumby-16", BRD_BRUMBY }, - { "2", BRD_BRUMBY }, - { "onboard2", BRD_ONBOARD2 }, - { "onboard-2", BRD_ONBOARD2 }, - { "onboard/2", BRD_ONBOARD2 }, - { "onboard-mc", BRD_ONBOARD2 }, - { "onboard/mc", BRD_ONBOARD2 }, - { "onboard-mca", BRD_ONBOARD2 }, - { "onboard/mca", BRD_ONBOARD2 }, - { "3", BRD_ONBOARD2 }, - { "onboard", BRD_ONBOARD }, - { "onboardat", BRD_ONBOARD }, - { "4", BRD_ONBOARD }, - { "onboarde", BRD_ONBOARDE }, - { "onboard-e", BRD_ONBOARDE }, - { "onboard/e", BRD_ONBOARDE }, - { "onboard-ei", BRD_ONBOARDE }, - { "onboard/ei", BRD_ONBOARDE }, - { "7", BRD_ONBOARDE }, - { "ecp", BRD_ECP }, - { "ecpat", BRD_ECP }, - { "ec8/64", BRD_ECP }, - { "ec8/64-at", BRD_ECP }, - { "ec8/64-isa", BRD_ECP }, - { "23", BRD_ECP }, - { "ecpe", BRD_ECPE }, - { "ecpei", BRD_ECPE }, - { "ec8/64-e", BRD_ECPE }, - { "ec8/64-ei", BRD_ECPE }, - { "24", BRD_ECPE }, - { "ecpmc", BRD_ECPMC }, - { "ec8/64-mc", BRD_ECPMC }, - { "ec8/64-mca", BRD_ECPMC }, - { "25", BRD_ECPMC }, - { "ecppci", BRD_ECPPCI }, - { "ec/ra", BRD_ECPPCI }, - { "ec/ra-pc", BRD_ECPPCI }, - { "ec/ra-pci", BRD_ECPPCI }, - { "29", BRD_ECPPCI }, -}; - -/* - * Define the module agruments. - */ -MODULE_AUTHOR("Greg Ungerer"); -MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); -MODULE_LICENSE("GPL"); - - -module_param_array(board0, charp, NULL, 0); -MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); -module_param_array(board1, charp, NULL, 0); -MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); -module_param_array(board2, charp, NULL, 0); -MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); -module_param_array(board3, charp, NULL, 0); -MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); - -#if STLI_EISAPROBE != 0 -/* - * Set up a default memory address table for EISA board probing. - * The default addresses are all bellow 1Mbyte, which has to be the - * case anyway. They should be safe, since we only read values from - * them, and interrupts are disabled while we do it. If the higher - * memory support is compiled in then we also try probing around - * the 1Gb, 2Gb and 3Gb areas as well... - */ -static unsigned long stli_eisamemprobeaddrs[] = { - 0xc0000, 0xd0000, 0xe0000, 0xf0000, - 0x80000000, 0x80010000, 0x80020000, 0x80030000, - 0x40000000, 0x40010000, 0x40020000, 0x40030000, - 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, - 0xff000000, 0xff010000, 0xff020000, 0xff030000, -}; - -static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); -#endif - -/* - * Define the Stallion PCI vendor and device IDs. - */ -#ifndef PCI_DEVICE_ID_ECRA -#define PCI_DEVICE_ID_ECRA 0x0004 -#endif - -static struct pci_device_id istallion_pci_tbl[] = { - { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); - -static struct pci_driver stli_pcidriver; - -/*****************************************************************************/ - -/* - * Hardware configuration info for ECP boards. These defines apply - * to the directly accessible io ports of the ECP. There is a set of - * defines for each ECP board type, ISA, EISA, MCA and PCI. - */ -#define ECP_IOSIZE 4 - -#define ECP_MEMSIZE (128 * 1024) -#define ECP_PCIMEMSIZE (256 * 1024) - -#define ECP_ATPAGESIZE (4 * 1024) -#define ECP_MCPAGESIZE (4 * 1024) -#define ECP_EIPAGESIZE (64 * 1024) -#define ECP_PCIPAGESIZE (64 * 1024) - -#define STL_EISAID 0x8c4e - -/* - * Important defines for the ISA class of ECP board. - */ -#define ECP_ATIREG 0 -#define ECP_ATCONFR 1 -#define ECP_ATMEMAR 2 -#define ECP_ATMEMPR 3 -#define ECP_ATSTOP 0x1 -#define ECP_ATINTENAB 0x10 -#define ECP_ATENABLE 0x20 -#define ECP_ATDISABLE 0x00 -#define ECP_ATADDRMASK 0x3f000 -#define ECP_ATADDRSHFT 12 - -/* - * Important defines for the EISA class of ECP board. - */ -#define ECP_EIIREG 0 -#define ECP_EIMEMARL 1 -#define ECP_EICONFR 2 -#define ECP_EIMEMARH 3 -#define ECP_EIENABLE 0x1 -#define ECP_EIDISABLE 0x0 -#define ECP_EISTOP 0x4 -#define ECP_EIEDGE 0x00 -#define ECP_EILEVEL 0x80 -#define ECP_EIADDRMASKL 0x00ff0000 -#define ECP_EIADDRSHFTL 16 -#define ECP_EIADDRMASKH 0xff000000 -#define ECP_EIADDRSHFTH 24 -#define ECP_EIBRDENAB 0xc84 - -#define ECP_EISAID 0x4 - -/* - * Important defines for the Micro-channel class of ECP board. - * (It has a lot in common with the ISA boards.) - */ -#define ECP_MCIREG 0 -#define ECP_MCCONFR 1 -#define ECP_MCSTOP 0x20 -#define ECP_MCENABLE 0x80 -#define ECP_MCDISABLE 0x00 - -/* - * Important defines for the PCI class of ECP board. - * (It has a lot in common with the other ECP boards.) - */ -#define ECP_PCIIREG 0 -#define ECP_PCICONFR 1 -#define ECP_PCISTOP 0x01 - -/* - * Hardware configuration info for ONboard and Brumby boards. These - * defines apply to the directly accessible io ports of these boards. - */ -#define ONB_IOSIZE 16 -#define ONB_MEMSIZE (64 * 1024) -#define ONB_ATPAGESIZE (64 * 1024) -#define ONB_MCPAGESIZE (64 * 1024) -#define ONB_EIMEMSIZE (128 * 1024) -#define ONB_EIPAGESIZE (64 * 1024) - -/* - * Important defines for the ISA class of ONboard board. - */ -#define ONB_ATIREG 0 -#define ONB_ATMEMAR 1 -#define ONB_ATCONFR 2 -#define ONB_ATSTOP 0x4 -#define ONB_ATENABLE 0x01 -#define ONB_ATDISABLE 0x00 -#define ONB_ATADDRMASK 0xff0000 -#define ONB_ATADDRSHFT 16 - -#define ONB_MEMENABLO 0 -#define ONB_MEMENABHI 0x02 - -/* - * Important defines for the EISA class of ONboard board. - */ -#define ONB_EIIREG 0 -#define ONB_EIMEMARL 1 -#define ONB_EICONFR 2 -#define ONB_EIMEMARH 3 -#define ONB_EIENABLE 0x1 -#define ONB_EIDISABLE 0x0 -#define ONB_EISTOP 0x4 -#define ONB_EIEDGE 0x00 -#define ONB_EILEVEL 0x80 -#define ONB_EIADDRMASKL 0x00ff0000 -#define ONB_EIADDRSHFTL 16 -#define ONB_EIADDRMASKH 0xff000000 -#define ONB_EIADDRSHFTH 24 -#define ONB_EIBRDENAB 0xc84 - -#define ONB_EISAID 0x1 - -/* - * Important defines for the Brumby boards. They are pretty simple, - * there is not much that is programmably configurable. - */ -#define BBY_IOSIZE 16 -#define BBY_MEMSIZE (64 * 1024) -#define BBY_PAGESIZE (16 * 1024) - -#define BBY_ATIREG 0 -#define BBY_ATCONFR 1 -#define BBY_ATSTOP 0x4 - -/* - * Important defines for the Stallion boards. They are pretty simple, - * there is not much that is programmably configurable. - */ -#define STAL_IOSIZE 16 -#define STAL_MEMSIZE (64 * 1024) -#define STAL_PAGESIZE (64 * 1024) - -/* - * Define the set of status register values for EasyConnection panels. - * The signature will return with the status value for each panel. From - * this we can determine what is attached to the board - before we have - * actually down loaded any code to it. - */ -#define ECH_PNLSTATUS 2 -#define ECH_PNL16PORT 0x20 -#define ECH_PNLIDMASK 0x07 -#define ECH_PNLXPID 0x40 -#define ECH_PNLINTRPEND 0x80 - -/* - * Define some macros to do things to the board. Even those these boards - * are somewhat related there is often significantly different ways of - * doing some operation on it (like enable, paging, reset, etc). So each - * board class has a set of functions which do the commonly required - * operations. The macros below basically just call these functions, - * generally checking for a NULL function - which means that the board - * needs nothing done to it to achieve this operation! - */ -#define EBRDINIT(brdp) \ - if (brdp->init != NULL) \ - (* brdp->init)(brdp) - -#define EBRDENABLE(brdp) \ - if (brdp->enable != NULL) \ - (* brdp->enable)(brdp); - -#define EBRDDISABLE(brdp) \ - if (brdp->disable != NULL) \ - (* brdp->disable)(brdp); - -#define EBRDINTR(brdp) \ - if (brdp->intr != NULL) \ - (* brdp->intr)(brdp); - -#define EBRDRESET(brdp) \ - if (brdp->reset != NULL) \ - (* brdp->reset)(brdp); - -#define EBRDGETMEMPTR(brdp,offset) \ - (* brdp->getmemptr)(brdp, offset, __LINE__) - -/* - * Define the maximal baud rate, and the default baud base for ports. - */ -#define STL_MAXBAUD 460800 -#define STL_BAUDBASE 115200 -#define STL_CLOSEDELAY (5 * HZ / 10) - -/*****************************************************************************/ - -/* - * Define macros to extract a brd or port number from a minor number. - */ -#define MINOR2BRD(min) (((min) & 0xc0) >> 6) -#define MINOR2PORT(min) ((min) & 0x3f) - -/*****************************************************************************/ - -/* - * Prototype all functions in this driver! - */ - -static int stli_parsebrd(struct stlconf *confp, char **argp); -static int stli_open(struct tty_struct *tty, struct file *filp); -static void stli_close(struct tty_struct *tty, struct file *filp); -static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); -static int stli_putchar(struct tty_struct *tty, unsigned char ch); -static void stli_flushchars(struct tty_struct *tty); -static int stli_writeroom(struct tty_struct *tty); -static int stli_charsinbuffer(struct tty_struct *tty); -static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); -static void stli_settermios(struct tty_struct *tty, struct ktermios *old); -static void stli_throttle(struct tty_struct *tty); -static void stli_unthrottle(struct tty_struct *tty); -static void stli_stop(struct tty_struct *tty); -static void stli_start(struct tty_struct *tty); -static void stli_flushbuffer(struct tty_struct *tty); -static int stli_breakctl(struct tty_struct *tty, int state); -static void stli_waituntilsent(struct tty_struct *tty, int timeout); -static void stli_sendxchar(struct tty_struct *tty, char ch); -static void stli_hangup(struct tty_struct *tty); - -static int stli_brdinit(struct stlibrd *brdp); -static int stli_startbrd(struct stlibrd *brdp); -static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); -static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); -static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg); -static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); -static void stli_poll(unsigned long arg); -static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); -static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp); -static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); -static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); -static int stli_setport(struct tty_struct *tty); -static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); -static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); -static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); -static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); -static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); -static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); -static long stli_mktiocm(unsigned long sigvalue); -static void stli_read(struct stlibrd *brdp, struct stliport *portp); -static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); -static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp); -static int stli_getbrdstats(combrd_t __user *bp); -static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp); -static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp); -static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); -static int stli_getportstruct(struct stliport __user *arg); -static int stli_getbrdstruct(struct stlibrd __user *arg); -static struct stlibrd *stli_allocbrd(void); - -static void stli_ecpinit(struct stlibrd *brdp); -static void stli_ecpenable(struct stlibrd *brdp); -static void stli_ecpdisable(struct stlibrd *brdp); -static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_ecpreset(struct stlibrd *brdp); -static void stli_ecpintr(struct stlibrd *brdp); -static void stli_ecpeiinit(struct stlibrd *brdp); -static void stli_ecpeienable(struct stlibrd *brdp); -static void stli_ecpeidisable(struct stlibrd *brdp); -static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_ecpeireset(struct stlibrd *brdp); -static void stli_ecpmcenable(struct stlibrd *brdp); -static void stli_ecpmcdisable(struct stlibrd *brdp); -static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_ecpmcreset(struct stlibrd *brdp); -static void stli_ecppciinit(struct stlibrd *brdp); -static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_ecppcireset(struct stlibrd *brdp); - -static void stli_onbinit(struct stlibrd *brdp); -static void stli_onbenable(struct stlibrd *brdp); -static void stli_onbdisable(struct stlibrd *brdp); -static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_onbreset(struct stlibrd *brdp); -static void stli_onbeinit(struct stlibrd *brdp); -static void stli_onbeenable(struct stlibrd *brdp); -static void stli_onbedisable(struct stlibrd *brdp); -static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_onbereset(struct stlibrd *brdp); -static void stli_bbyinit(struct stlibrd *brdp); -static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_bbyreset(struct stlibrd *brdp); -static void stli_stalinit(struct stlibrd *brdp); -static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); -static void stli_stalreset(struct stlibrd *brdp); - -static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); - -static int stli_initecp(struct stlibrd *brdp); -static int stli_initonb(struct stlibrd *brdp); -#if STLI_EISAPROBE != 0 -static int stli_eisamemprobe(struct stlibrd *brdp); -#endif -static int stli_initports(struct stlibrd *brdp); - -/*****************************************************************************/ - -/* - * Define the driver info for a user level shared memory device. This - * device will work sort of like the /dev/kmem device - except that it - * will give access to the shared memory on the Stallion intelligent - * board. This is also a very useful debugging tool. - */ -static const struct file_operations stli_fsiomem = { - .owner = THIS_MODULE, - .read = stli_memread, - .write = stli_memwrite, - .unlocked_ioctl = stli_memioctl, - .llseek = default_llseek, -}; - -/*****************************************************************************/ - -/* - * Define a timer_list entry for our poll routine. The slave board - * is polled every so often to see if anything needs doing. This is - * much cheaper on host cpu than using interrupts. It turns out to - * not increase character latency by much either... - */ -static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); - -static int stli_timeron; - -/* - * Define the calculation for the timeout routine. - */ -#define STLI_TIMEOUT (jiffies + 1) - -/*****************************************************************************/ - -static struct class *istallion_class; - -static void stli_cleanup_ports(struct stlibrd *brdp) -{ - struct stliport *portp; - unsigned int j; - struct tty_struct *tty; - - for (j = 0; j < STL_MAXPORTS; j++) { - portp = brdp->ports[j]; - if (portp != NULL) { - tty = tty_port_tty_get(&portp->port); - if (tty != NULL) { - tty_hangup(tty); - tty_kref_put(tty); - } - kfree(portp); - } - } -} - -/*****************************************************************************/ - -/* - * Parse the supplied argument string, into the board conf struct. - */ - -static int stli_parsebrd(struct stlconf *confp, char **argp) -{ - unsigned int i; - char *sp; - - if (argp[0] == NULL || *argp[0] == 0) - return 0; - - for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) - *sp = tolower(*sp); - - for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { - if (strcmp(stli_brdstr[i].name, argp[0]) == 0) - break; - } - if (i == ARRAY_SIZE(stli_brdstr)) { - printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]); - return 0; - } - - confp->brdtype = stli_brdstr[i].type; - if (argp[1] != NULL && *argp[1] != 0) - confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0); - if (argp[2] != NULL && *argp[2] != 0) - confp->memaddr = simple_strtoul(argp[2], NULL, 0); - return(1); -} - -/*****************************************************************************/ - -/* - * On the first open of the device setup the port hardware, and - * initialize the per port data structure. Since initializing the port - * requires several commands to the board we will need to wait for any - * other open that is already initializing the port. - * - * Locking: protected by the port mutex. - */ - -static int stli_activate(struct tty_port *port, struct tty_struct *tty) -{ - struct stliport *portp = container_of(port, struct stliport, port); - struct stlibrd *brdp = stli_brds[portp->brdnr]; - int rc; - - if ((rc = stli_initopen(tty, brdp, portp)) >= 0) - clear_bit(TTY_IO_ERROR, &tty->flags); - wake_up_interruptible(&portp->raw_wait); - return rc; -} - -static int stli_open(struct tty_struct *tty, struct file *filp) -{ - struct stlibrd *brdp; - struct stliport *portp; - unsigned int minordev, brdnr, portnr; - - minordev = tty->index; - brdnr = MINOR2BRD(minordev); - if (brdnr >= stli_nrbrds) - return -ENODEV; - brdp = stli_brds[brdnr]; - if (brdp == NULL) - return -ENODEV; - if (!test_bit(BST_STARTED, &brdp->state)) - return -ENODEV; - portnr = MINOR2PORT(minordev); - if (portnr > brdp->nrports) - return -ENODEV; - - portp = brdp->ports[portnr]; - if (portp == NULL) - return -ENODEV; - if (portp->devnr < 1) - return -ENODEV; - - tty->driver_data = portp; - return tty_port_open(&portp->port, tty, filp); -} - - -/*****************************************************************************/ - -static void stli_shutdown(struct tty_port *port) -{ - struct stlibrd *brdp; - unsigned long ftype; - unsigned long flags; - struct stliport *portp = container_of(port, struct stliport, port); - - if (portp->brdnr >= stli_nrbrds) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return; - - /* - * May want to wait for data to drain before closing. The BUSY - * flag keeps track of whether we are still transmitting or not. - * It is updated by messages from the slave - indicating when all - * chars really have drained. - */ - - if (!test_bit(ST_CLOSING, &portp->state)) - stli_rawclose(brdp, portp, 0, 0); - - spin_lock_irqsave(&stli_lock, flags); - clear_bit(ST_TXBUSY, &portp->state); - clear_bit(ST_RXSTOP, &portp->state); - spin_unlock_irqrestore(&stli_lock, flags); - - ftype = FLUSHTX | FLUSHRX; - stli_cmdwait(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); -} - -static void stli_close(struct tty_struct *tty, struct file *filp) -{ - struct stliport *portp = tty->driver_data; - unsigned long flags; - if (portp == NULL) - return; - spin_lock_irqsave(&stli_lock, flags); - /* Flush any internal buffering out first */ - if (tty == stli_txcooktty) - stli_flushchars(tty); - spin_unlock_irqrestore(&stli_lock, flags); - tty_port_close(&portp->port, tty, filp); -} - -/*****************************************************************************/ - -/* - * Carry out first open operations on a port. This involves a number of - * commands to be sent to the slave. We need to open the port, set the - * notification events, set the initial port settings, get and set the - * initial signal values. We sleep and wait in between each one. But - * this still all happens pretty quickly. - */ - -static int stli_initopen(struct tty_struct *tty, - struct stlibrd *brdp, struct stliport *portp) -{ - asynotify_t nt; - asyport_t aport; - int rc; - - if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) - return rc; - - memset(&nt, 0, sizeof(asynotify_t)); - nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); - nt.signal = SG_DCD; - if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, - sizeof(asynotify_t), 0)) < 0) - return rc; - - stli_mkasyport(tty, portp, &aport, tty->termios); - if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, - sizeof(asyport_t), 0)) < 0) - return rc; - - set_bit(ST_GETSIGS, &portp->state); - if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, - sizeof(asysigs_t), 1)) < 0) - return rc; - if (test_and_clear_bit(ST_GETSIGS, &portp->state)) - portp->sigs = stli_mktiocm(portp->asig.sigvalue); - stli_mkasysigs(&portp->asig, 1, 1); - if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0)) < 0) - return rc; - - return 0; -} - -/*****************************************************************************/ - -/* - * Send an open message to the slave. This will sleep waiting for the - * acknowledgement, so must have user context. We need to co-ordinate - * with close events here, since we don't want open and close events - * to overlap. - */ - -static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) -{ - cdkhdr_t __iomem *hdrp; - cdkctrl_t __iomem *cp; - unsigned char __iomem *bits; - unsigned long flags; - int rc; - -/* - * Send a message to the slave to open this port. - */ - -/* - * Slave is already closing this port. This can happen if a hangup - * occurs on this port. So we must wait until it is complete. The - * order of opens and closes may not be preserved across shared - * memory, so we must wait until it is complete. - */ - wait_event_interruptible_tty(portp->raw_wait, - !test_bit(ST_CLOSING, &portp->state)); - if (signal_pending(current)) { - return -ERESTARTSYS; - } - -/* - * Everything is ready now, so write the open message into shared - * memory. Once the message is in set the service bits to say that - * this port wants service. - */ - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; - writel(arg, &cp->openarg); - writeb(1, &cp->open); - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + - portp->portidx; - writeb(readb(bits) | portp->portbit, bits); - EBRDDISABLE(brdp); - - if (wait == 0) { - spin_unlock_irqrestore(&brd_lock, flags); - return 0; - } - -/* - * Slave is in action, so now we must wait for the open acknowledgment - * to come back. - */ - rc = 0; - set_bit(ST_OPENING, &portp->state); - spin_unlock_irqrestore(&brd_lock, flags); - - wait_event_interruptible_tty(portp->raw_wait, - !test_bit(ST_OPENING, &portp->state)); - if (signal_pending(current)) - rc = -ERESTARTSYS; - - if ((rc == 0) && (portp->rc != 0)) - rc = -EIO; - return rc; -} - -/*****************************************************************************/ - -/* - * Send a close message to the slave. Normally this will sleep waiting - * for the acknowledgement, but if wait parameter is 0 it will not. If - * wait is true then must have user context (to sleep). - */ - -static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) -{ - cdkhdr_t __iomem *hdrp; - cdkctrl_t __iomem *cp; - unsigned char __iomem *bits; - unsigned long flags; - int rc; - -/* - * Slave is already closing this port. This can happen if a hangup - * occurs on this port. - */ - if (wait) { - wait_event_interruptible_tty(portp->raw_wait, - !test_bit(ST_CLOSING, &portp->state)); - if (signal_pending(current)) { - return -ERESTARTSYS; - } - } - -/* - * Write the close command into shared memory. - */ - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; - writel(arg, &cp->closearg); - writeb(1, &cp->close); - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + - portp->portidx; - writeb(readb(bits) |portp->portbit, bits); - EBRDDISABLE(brdp); - - set_bit(ST_CLOSING, &portp->state); - spin_unlock_irqrestore(&brd_lock, flags); - - if (wait == 0) - return 0; - -/* - * Slave is in action, so now we must wait for the open acknowledgment - * to come back. - */ - rc = 0; - wait_event_interruptible_tty(portp->raw_wait, - !test_bit(ST_CLOSING, &portp->state)); - if (signal_pending(current)) - rc = -ERESTARTSYS; - - if ((rc == 0) && (portp->rc != 0)) - rc = -EIO; - return rc; -} - -/*****************************************************************************/ - -/* - * Send a command to the slave and wait for the response. This must - * have user context (it sleeps). This routine is generic in that it - * can send any type of command. Its purpose is to wait for that command - * to complete (as opposed to initiating the command then returning). - */ - -static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) -{ - /* - * no need for wait_event_tty because clearing ST_CMDING cannot block - * on BTM - */ - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_CMDING, &portp->state)); - if (signal_pending(current)) - return -ERESTARTSYS; - - stli_sendcmd(brdp, portp, cmd, arg, size, copyback); - - wait_event_interruptible(portp->raw_wait, - !test_bit(ST_CMDING, &portp->state)); - if (signal_pending(current)) - return -ERESTARTSYS; - - if (portp->rc != 0) - return -EIO; - return 0; -} - -/*****************************************************************************/ - -/* - * Send the termios settings for this port to the slave. This sleeps - * waiting for the command to complete - so must have user context. - */ - -static int stli_setport(struct tty_struct *tty) -{ - struct stliport *portp = tty->driver_data; - struct stlibrd *brdp; - asyport_t aport; - - if (portp == NULL) - return -ENODEV; - if (portp->brdnr >= stli_nrbrds) - return -ENODEV; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return -ENODEV; - - stli_mkasyport(tty, portp, &aport, tty->termios); - return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); -} - -/*****************************************************************************/ - -static int stli_carrier_raised(struct tty_port *port) -{ - struct stliport *portp = container_of(port, struct stliport, port); - return (portp->sigs & TIOCM_CD) ? 1 : 0; -} - -static void stli_dtr_rts(struct tty_port *port, int on) -{ - struct stliport *portp = container_of(port, struct stliport, port); - struct stlibrd *brdp = stli_brds[portp->brdnr]; - stli_mkasysigs(&portp->asig, on, on); - if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0) < 0) - printk(KERN_WARNING "istallion: dtr set failed.\n"); -} - - -/*****************************************************************************/ - -/* - * Write routine. Take the data and put it in the shared memory ring - * queue. If port is not already sending chars then need to mark the - * service bits for this port. - */ - -static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - cdkasy_t __iomem *ap; - cdkhdr_t __iomem *hdrp; - unsigned char __iomem *bits; - unsigned char __iomem *shbuf; - unsigned char *chbuf; - struct stliport *portp; - struct stlibrd *brdp; - unsigned int len, stlen, head, tail, size; - unsigned long flags; - - if (tty == stli_txcooktty) - stli_flushchars(tty); - portp = tty->driver_data; - if (portp == NULL) - return 0; - if (portp->brdnr >= stli_nrbrds) - return 0; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return 0; - chbuf = (unsigned char *) buf; - -/* - * All data is now local, shove as much as possible into shared memory. - */ - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); - head = (unsigned int) readw(&ap->txq.head); - tail = (unsigned int) readw(&ap->txq.tail); - if (tail != ((unsigned int) readw(&ap->txq.tail))) - tail = (unsigned int) readw(&ap->txq.tail); - size = portp->txsize; - if (head >= tail) { - len = size - (head - tail) - 1; - stlen = size - head; - } else { - len = tail - head - 1; - stlen = len; - } - - len = min(len, (unsigned int)count); - count = 0; - shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); - - while (len > 0) { - stlen = min(len, stlen); - memcpy_toio(shbuf + head, chbuf, stlen); - chbuf += stlen; - len -= stlen; - count += stlen; - head += stlen; - if (head >= size) { - head = 0; - stlen = tail; - } - } - - ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); - writew(head, &ap->txq.head); - if (test_bit(ST_TXBUSY, &portp->state)) { - if (readl(&ap->changed.data) & DT_TXEMPTY) - writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); - } - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + - portp->portidx; - writeb(readb(bits) | portp->portbit, bits); - set_bit(ST_TXBUSY, &portp->state); - EBRDDISABLE(brdp); - spin_unlock_irqrestore(&brd_lock, flags); - - return(count); -} - -/*****************************************************************************/ - -/* - * Output a single character. We put it into a temporary local buffer - * (for speed) then write out that buffer when the flushchars routine - * is called. There is a safety catch here so that if some other port - * writes chars before the current buffer has been, then we write them - * first them do the new ports. - */ - -static int stli_putchar(struct tty_struct *tty, unsigned char ch) -{ - if (tty != stli_txcooktty) { - if (stli_txcooktty != NULL) - stli_flushchars(stli_txcooktty); - stli_txcooktty = tty; - } - - stli_txcookbuf[stli_txcooksize++] = ch; - return 0; -} - -/*****************************************************************************/ - -/* - * Transfer characters from the local TX cooking buffer to the board. - * We sort of ignore the tty that gets passed in here. We rely on the - * info stored with the TX cook buffer to tell us which port to flush - * the data on. In any case we clean out the TX cook buffer, for re-use - * by someone else. - */ - -static void stli_flushchars(struct tty_struct *tty) -{ - cdkhdr_t __iomem *hdrp; - unsigned char __iomem *bits; - cdkasy_t __iomem *ap; - struct tty_struct *cooktty; - struct stliport *portp; - struct stlibrd *brdp; - unsigned int len, stlen, head, tail, size, count, cooksize; - unsigned char *buf; - unsigned char __iomem *shbuf; - unsigned long flags; - - cooksize = stli_txcooksize; - cooktty = stli_txcooktty; - stli_txcooksize = 0; - stli_txcookrealsize = 0; - stli_txcooktty = NULL; - - if (cooktty == NULL) - return; - if (tty != cooktty) - tty = cooktty; - if (cooksize == 0) - return; - - portp = tty->driver_data; - if (portp == NULL) - return; - if (portp->brdnr >= stli_nrbrds) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - - ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); - head = (unsigned int) readw(&ap->txq.head); - tail = (unsigned int) readw(&ap->txq.tail); - if (tail != ((unsigned int) readw(&ap->txq.tail))) - tail = (unsigned int) readw(&ap->txq.tail); - size = portp->txsize; - if (head >= tail) { - len = size - (head - tail) - 1; - stlen = size - head; - } else { - len = tail - head - 1; - stlen = len; - } - - len = min(len, cooksize); - count = 0; - shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); - buf = stli_txcookbuf; - - while (len > 0) { - stlen = min(len, stlen); - memcpy_toio(shbuf + head, buf, stlen); - buf += stlen; - len -= stlen; - count += stlen; - head += stlen; - if (head >= size) { - head = 0; - stlen = tail; - } - } - - ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); - writew(head, &ap->txq.head); - - if (test_bit(ST_TXBUSY, &portp->state)) { - if (readl(&ap->changed.data) & DT_TXEMPTY) - writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); - } - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + - portp->portidx; - writeb(readb(bits) | portp->portbit, bits); - set_bit(ST_TXBUSY, &portp->state); - - EBRDDISABLE(brdp); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -static int stli_writeroom(struct tty_struct *tty) -{ - cdkasyrq_t __iomem *rp; - struct stliport *portp; - struct stlibrd *brdp; - unsigned int head, tail, len; - unsigned long flags; - - if (tty == stli_txcooktty) { - if (stli_txcookrealsize != 0) { - len = stli_txcookrealsize - stli_txcooksize; - return len; - } - } - - portp = tty->driver_data; - if (portp == NULL) - return 0; - if (portp->brdnr >= stli_nrbrds) - return 0; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return 0; - - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; - head = (unsigned int) readw(&rp->head); - tail = (unsigned int) readw(&rp->tail); - if (tail != ((unsigned int) readw(&rp->tail))) - tail = (unsigned int) readw(&rp->tail); - len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); - len--; - EBRDDISABLE(brdp); - spin_unlock_irqrestore(&brd_lock, flags); - - if (tty == stli_txcooktty) { - stli_txcookrealsize = len; - len -= stli_txcooksize; - } - return len; -} - -/*****************************************************************************/ - -/* - * Return the number of characters in the transmit buffer. Normally we - * will return the number of chars in the shared memory ring queue. - * We need to kludge around the case where the shared memory buffer is - * empty but not all characters have drained yet, for this case just - * return that there is 1 character in the buffer! - */ - -static int stli_charsinbuffer(struct tty_struct *tty) -{ - cdkasyrq_t __iomem *rp; - struct stliport *portp; - struct stlibrd *brdp; - unsigned int head, tail, len; - unsigned long flags; - - if (tty == stli_txcooktty) - stli_flushchars(tty); - portp = tty->driver_data; - if (portp == NULL) - return 0; - if (portp->brdnr >= stli_nrbrds) - return 0; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return 0; - - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; - head = (unsigned int) readw(&rp->head); - tail = (unsigned int) readw(&rp->tail); - if (tail != ((unsigned int) readw(&rp->tail))) - tail = (unsigned int) readw(&rp->tail); - len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); - if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) - len = 1; - EBRDDISABLE(brdp); - spin_unlock_irqrestore(&brd_lock, flags); - - return len; -} - -/*****************************************************************************/ - -/* - * Generate the serial struct info. - */ - -static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) -{ - struct serial_struct sio; - struct stlibrd *brdp; - - memset(&sio, 0, sizeof(struct serial_struct)); - sio.type = PORT_UNKNOWN; - sio.line = portp->portnr; - sio.irq = 0; - sio.flags = portp->port.flags; - sio.baud_base = portp->baud_base; - sio.close_delay = portp->port.close_delay; - sio.closing_wait = portp->closing_wait; - sio.custom_divisor = portp->custom_divisor; - sio.xmit_fifo_size = 0; - sio.hub6 = 0; - - brdp = stli_brds[portp->brdnr]; - if (brdp != NULL) - sio.port = brdp->iobase; - - return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? - -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Set port according to the serial struct info. - * At this point we do not do any auto-configure stuff, so we will - * just quietly ignore any requests to change irq, etc. - */ - -static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp) -{ - struct serial_struct sio; - int rc; - struct stliport *portp = tty->driver_data; - - if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) - return -EFAULT; - if (!capable(CAP_SYS_ADMIN)) { - if ((sio.baud_base != portp->baud_base) || - (sio.close_delay != portp->port.close_delay) || - ((sio.flags & ~ASYNC_USR_MASK) != - (portp->port.flags & ~ASYNC_USR_MASK))) - return -EPERM; - } - - portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | - (sio.flags & ASYNC_USR_MASK); - portp->baud_base = sio.baud_base; - portp->port.close_delay = sio.close_delay; - portp->closing_wait = sio.closing_wait; - portp->custom_divisor = sio.custom_divisor; - - if ((rc = stli_setport(tty)) < 0) - return rc; - return 0; -} - -/*****************************************************************************/ - -static int stli_tiocmget(struct tty_struct *tty) -{ - struct stliport *portp = tty->driver_data; - struct stlibrd *brdp; - int rc; - - if (portp == NULL) - return -ENODEV; - if (portp->brdnr >= stli_nrbrds) - return 0; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return 0; - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - - if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, - &portp->asig, sizeof(asysigs_t), 1)) < 0) - return rc; - - return stli_mktiocm(portp->asig.sigvalue); -} - -static int stli_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct stliport *portp = tty->driver_data; - struct stlibrd *brdp; - int rts = -1, dtr = -1; - - if (portp == NULL) - return -ENODEV; - if (portp->brdnr >= stli_nrbrds) - return 0; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return 0; - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - - if (set & TIOCM_RTS) - rts = 1; - if (set & TIOCM_DTR) - dtr = 1; - if (clear & TIOCM_RTS) - rts = 0; - if (clear & TIOCM_DTR) - dtr = 0; - - stli_mkasysigs(&portp->asig, dtr, rts); - - return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0); -} - -static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) -{ - struct stliport *portp; - struct stlibrd *brdp; - int rc; - void __user *argp = (void __user *)arg; - - portp = tty->driver_data; - if (portp == NULL) - return -ENODEV; - if (portp->brdnr >= stli_nrbrds) - return 0; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return 0; - - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - } - - rc = 0; - - switch (cmd) { - case TIOCGSERIAL: - rc = stli_getserial(portp, argp); - break; - case TIOCSSERIAL: - rc = stli_setserial(tty, argp); - break; - case STL_GETPFLAG: - rc = put_user(portp->pflag, (unsigned __user *)argp); - break; - case STL_SETPFLAG: - if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) - stli_setport(tty); - break; - case COM_GETPORTSTATS: - rc = stli_getportstats(tty, portp, argp); - break; - case COM_CLRPORTSTATS: - rc = stli_clrportstats(portp, argp); - break; - case TIOCSERCONFIG: - case TIOCSERGWILD: - case TIOCSERSWILD: - case TIOCSERGETLSR: - case TIOCSERGSTRUCT: - case TIOCSERGETMULTI: - case TIOCSERSETMULTI: - default: - rc = -ENOIOCTLCMD; - break; - } - - return rc; -} - -/*****************************************************************************/ - -/* - * This routine assumes that we have user context and can sleep. - * Looks like it is true for the current ttys implementation..!! - */ - -static void stli_settermios(struct tty_struct *tty, struct ktermios *old) -{ - struct stliport *portp; - struct stlibrd *brdp; - struct ktermios *tiosp; - asyport_t aport; - - portp = tty->driver_data; - if (portp == NULL) - return; - if (portp->brdnr >= stli_nrbrds) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return; - - tiosp = tty->termios; - - stli_mkasyport(tty, portp, &aport, tiosp); - stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); - stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); - stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, - sizeof(asysigs_t), 0); - if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) - tty->hw_stopped = 0; - if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) - wake_up_interruptible(&portp->port.open_wait); -} - -/*****************************************************************************/ - -/* - * Attempt to flow control who ever is sending us data. We won't really - * do any flow control action here. We can't directly, and even if we - * wanted to we would have to send a command to the slave. The slave - * knows how to flow control, and will do so when its buffers reach its - * internal high water marks. So what we will do is set a local state - * bit that will stop us sending any RX data up from the poll routine - * (which is the place where RX data from the slave is handled). - */ - -static void stli_throttle(struct tty_struct *tty) -{ - struct stliport *portp = tty->driver_data; - if (portp == NULL) - return; - set_bit(ST_RXSTOP, &portp->state); -} - -/*****************************************************************************/ - -/* - * Unflow control the device sending us data... That means that all - * we have to do is clear the RXSTOP state bit. The next poll call - * will then be able to pass the RX data back up. - */ - -static void stli_unthrottle(struct tty_struct *tty) -{ - struct stliport *portp = tty->driver_data; - if (portp == NULL) - return; - clear_bit(ST_RXSTOP, &portp->state); -} - -/*****************************************************************************/ - -/* - * Stop the transmitter. - */ - -static void stli_stop(struct tty_struct *tty) -{ -} - -/*****************************************************************************/ - -/* - * Start the transmitter again. - */ - -static void stli_start(struct tty_struct *tty) -{ -} - -/*****************************************************************************/ - - -/* - * Hangup this port. This is pretty much like closing the port, only - * a little more brutal. No waiting for data to drain. Shutdown the - * port and maybe drop signals. This is rather tricky really. We want - * to close the port as well. - */ - -static void stli_hangup(struct tty_struct *tty) -{ - struct stliport *portp = tty->driver_data; - tty_port_hangup(&portp->port); -} - -/*****************************************************************************/ - -/* - * Flush characters from the lower buffer. We may not have user context - * so we cannot sleep waiting for it to complete. Also we need to check - * if there is chars for this port in the TX cook buffer, and flush them - * as well. - */ - -static void stli_flushbuffer(struct tty_struct *tty) -{ - struct stliport *portp; - struct stlibrd *brdp; - unsigned long ftype, flags; - - portp = tty->driver_data; - if (portp == NULL) - return; - if (portp->brdnr >= stli_nrbrds) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - if (tty == stli_txcooktty) { - stli_txcooktty = NULL; - stli_txcooksize = 0; - stli_txcookrealsize = 0; - } - if (test_bit(ST_CMDING, &portp->state)) { - set_bit(ST_DOFLUSHTX, &portp->state); - } else { - ftype = FLUSHTX; - if (test_bit(ST_DOFLUSHRX, &portp->state)) { - ftype |= FLUSHRX; - clear_bit(ST_DOFLUSHRX, &portp->state); - } - __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); - } - spin_unlock_irqrestore(&brd_lock, flags); - tty_wakeup(tty); -} - -/*****************************************************************************/ - -static int stli_breakctl(struct tty_struct *tty, int state) -{ - struct stlibrd *brdp; - struct stliport *portp; - long arg; - - portp = tty->driver_data; - if (portp == NULL) - return -EINVAL; - if (portp->brdnr >= stli_nrbrds) - return -EINVAL; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return -EINVAL; - - arg = (state == -1) ? BREAKON : BREAKOFF; - stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); - return 0; -} - -/*****************************************************************************/ - -static void stli_waituntilsent(struct tty_struct *tty, int timeout) -{ - struct stliport *portp; - unsigned long tend; - - portp = tty->driver_data; - if (portp == NULL) - return; - - if (timeout == 0) - timeout = HZ; - tend = jiffies + timeout; - - while (test_bit(ST_TXBUSY, &portp->state)) { - if (signal_pending(current)) - break; - msleep_interruptible(20); - if (time_after_eq(jiffies, tend)) - break; - } -} - -/*****************************************************************************/ - -static void stli_sendxchar(struct tty_struct *tty, char ch) -{ - struct stlibrd *brdp; - struct stliport *portp; - asyctrl_t actrl; - - portp = tty->driver_data; - if (portp == NULL) - return; - if (portp->brdnr >= stli_nrbrds) - return; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return; - - memset(&actrl, 0, sizeof(asyctrl_t)); - if (ch == STOP_CHAR(tty)) { - actrl.rxctrl = CT_STOPFLOW; - } else if (ch == START_CHAR(tty)) { - actrl.rxctrl = CT_STARTFLOW; - } else { - actrl.txctrl = CT_SENDCHR; - actrl.tximdch = ch; - } - stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); -} - -static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr) -{ - char *uart; - int rc; - - rc = stli_portcmdstats(NULL, portp); - - uart = "UNKNOWN"; - if (test_bit(BST_STARTED, &brdp->state)) { - switch (stli_comstats.hwid) { - case 0: uart = "2681"; break; - case 1: uart = "SC26198"; break; - default:uart = "CD1400"; break; - } - } - seq_printf(m, "%d: uart:%s ", portnr, uart); - - if (test_bit(BST_STARTED, &brdp->state) && rc >= 0) { - char sep; - - seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal, - (int) stli_comstats.rxtotal); - - if (stli_comstats.rxframing) - seq_printf(m, " fe:%d", - (int) stli_comstats.rxframing); - if (stli_comstats.rxparity) - seq_printf(m, " pe:%d", - (int) stli_comstats.rxparity); - if (stli_comstats.rxbreaks) - seq_printf(m, " brk:%d", - (int) stli_comstats.rxbreaks); - if (stli_comstats.rxoverrun) - seq_printf(m, " oe:%d", - (int) stli_comstats.rxoverrun); - - sep = ' '; - if (stli_comstats.signals & TIOCM_RTS) { - seq_printf(m, "%c%s", sep, "RTS"); - sep = '|'; - } - if (stli_comstats.signals & TIOCM_CTS) { - seq_printf(m, "%c%s", sep, "CTS"); - sep = '|'; - } - if (stli_comstats.signals & TIOCM_DTR) { - seq_printf(m, "%c%s", sep, "DTR"); - sep = '|'; - } - if (stli_comstats.signals & TIOCM_CD) { - seq_printf(m, "%c%s", sep, "DCD"); - sep = '|'; - } - if (stli_comstats.signals & TIOCM_DSR) { - seq_printf(m, "%c%s", sep, "DSR"); - sep = '|'; - } - } - seq_putc(m, '\n'); -} - -/*****************************************************************************/ - -/* - * Port info, read from the /proc file system. - */ - -static int stli_proc_show(struct seq_file *m, void *v) -{ - struct stlibrd *brdp; - struct stliport *portp; - unsigned int brdnr, portnr, totalport; - - totalport = 0; - - seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion); - -/* - * We scan through for each board, panel and port. The offset is - * calculated on the fly, and irrelevant ports are skipped. - */ - for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { - brdp = stli_brds[brdnr]; - if (brdp == NULL) - continue; - if (brdp->state == 0) - continue; - - totalport = brdnr * STL_MAXPORTS; - for (portnr = 0; (portnr < brdp->nrports); portnr++, - totalport++) { - portp = brdp->ports[portnr]; - if (portp == NULL) - continue; - stli_portinfo(m, brdp, portp, totalport); - } - } - return 0; -} - -static int stli_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, stli_proc_show, NULL); -} - -static const struct file_operations stli_proc_fops = { - .owner = THIS_MODULE, - .open = stli_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/*****************************************************************************/ - -/* - * Generic send command routine. This will send a message to the slave, - * of the specified type with the specified argument. Must be very - * careful of data that will be copied out from shared memory - - * containing command results. The command completion is all done from - * a poll routine that does not have user context. Therefore you cannot - * copy back directly into user space, or to the kernel stack of a - * process. This routine does not sleep, so can be called from anywhere. - * - * The caller must hold the brd_lock (see also stli_sendcmd the usual - * entry point) - */ - -static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) -{ - cdkhdr_t __iomem *hdrp; - cdkctrl_t __iomem *cp; - unsigned char __iomem *bits; - - if (test_bit(ST_CMDING, &portp->state)) { - printk(KERN_ERR "istallion: command already busy, cmd=%x!\n", - (int) cmd); - return; - } - - EBRDENABLE(brdp); - cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; - if (size > 0) { - memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); - if (copyback) { - portp->argp = arg; - portp->argsize = size; - } - } - writel(0, &cp->status); - writel(cmd, &cp->cmd); - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + - portp->portidx; - writeb(readb(bits) | portp->portbit, bits); - set_bit(ST_CMDING, &portp->state); - EBRDDISABLE(brdp); -} - -static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) -{ - unsigned long flags; - - spin_lock_irqsave(&brd_lock, flags); - __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Read data from shared memory. This assumes that the shared memory - * is enabled and that interrupts are off. Basically we just empty out - * the shared memory buffer into the tty buffer. Must be careful to - * handle the case where we fill up the tty buffer, but still have - * more chars to unload. - */ - -static void stli_read(struct stlibrd *brdp, struct stliport *portp) -{ - cdkasyrq_t __iomem *rp; - char __iomem *shbuf; - struct tty_struct *tty; - unsigned int head, tail, size; - unsigned int len, stlen; - - if (test_bit(ST_RXSTOP, &portp->state)) - return; - tty = tty_port_tty_get(&portp->port); - if (tty == NULL) - return; - - rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; - head = (unsigned int) readw(&rp->head); - if (head != ((unsigned int) readw(&rp->head))) - head = (unsigned int) readw(&rp->head); - tail = (unsigned int) readw(&rp->tail); - size = portp->rxsize; - if (head >= tail) { - len = head - tail; - stlen = len; - } else { - len = size - (tail - head); - stlen = size - tail; - } - - len = tty_buffer_request_room(tty, len); - - shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); - - while (len > 0) { - unsigned char *cptr; - - stlen = min(len, stlen); - tty_prepare_flip_string(tty, &cptr, stlen); - memcpy_fromio(cptr, shbuf + tail, stlen); - len -= stlen; - tail += stlen; - if (tail >= size) { - tail = 0; - stlen = head; - } - } - rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; - writew(tail, &rp->tail); - - if (head != tail) - set_bit(ST_RXING, &portp->state); - - tty_schedule_flip(tty); - tty_kref_put(tty); -} - -/*****************************************************************************/ - -/* - * Set up and carry out any delayed commands. There is only a small set - * of slave commands that can be done "off-level". So it is not too - * difficult to deal with them here. - */ - -static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) -{ - int cmd; - - if (test_bit(ST_DOSIGS, &portp->state)) { - if (test_bit(ST_DOFLUSHTX, &portp->state) && - test_bit(ST_DOFLUSHRX, &portp->state)) - cmd = A_SETSIGNALSF; - else if (test_bit(ST_DOFLUSHTX, &portp->state)) - cmd = A_SETSIGNALSFTX; - else if (test_bit(ST_DOFLUSHRX, &portp->state)) - cmd = A_SETSIGNALSFRX; - else - cmd = A_SETSIGNALS; - clear_bit(ST_DOFLUSHTX, &portp->state); - clear_bit(ST_DOFLUSHRX, &portp->state); - clear_bit(ST_DOSIGS, &portp->state); - memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, - sizeof(asysigs_t)); - writel(0, &cp->status); - writel(cmd, &cp->cmd); - set_bit(ST_CMDING, &portp->state); - } else if (test_bit(ST_DOFLUSHTX, &portp->state) || - test_bit(ST_DOFLUSHRX, &portp->state)) { - cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); - cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); - clear_bit(ST_DOFLUSHTX, &portp->state); - clear_bit(ST_DOFLUSHRX, &portp->state); - memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); - writel(0, &cp->status); - writel(A_FLUSH, &cp->cmd); - set_bit(ST_CMDING, &portp->state); - } -} - -/*****************************************************************************/ - -/* - * Host command service checking. This handles commands or messages - * coming from the slave to the host. Must have board shared memory - * enabled and interrupts off when called. Notice that by servicing the - * read data last we don't need to change the shared memory pointer - * during processing (which is a slow IO operation). - * Return value indicates if this port is still awaiting actions from - * the slave (like open, command, or even TX data being sent). If 0 - * then port is still busy, otherwise no longer busy. - */ - -static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) -{ - cdkasy_t __iomem *ap; - cdkctrl_t __iomem *cp; - struct tty_struct *tty; - asynotify_t nt; - unsigned long oldsigs; - int rc, donerx; - - ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); - cp = &ap->ctrl; - -/* - * Check if we are waiting for an open completion message. - */ - if (test_bit(ST_OPENING, &portp->state)) { - rc = readl(&cp->openarg); - if (readb(&cp->open) == 0 && rc != 0) { - if (rc > 0) - rc--; - writel(0, &cp->openarg); - portp->rc = rc; - clear_bit(ST_OPENING, &portp->state); - wake_up_interruptible(&portp->raw_wait); - } - } - -/* - * Check if we are waiting for a close completion message. - */ - if (test_bit(ST_CLOSING, &portp->state)) { - rc = (int) readl(&cp->closearg); - if (readb(&cp->close) == 0 && rc != 0) { - if (rc > 0) - rc--; - writel(0, &cp->closearg); - portp->rc = rc; - clear_bit(ST_CLOSING, &portp->state); - wake_up_interruptible(&portp->raw_wait); - } - } - -/* - * Check if we are waiting for a command completion message. We may - * need to copy out the command results associated with this command. - */ - if (test_bit(ST_CMDING, &portp->state)) { - rc = readl(&cp->status); - if (readl(&cp->cmd) == 0 && rc != 0) { - if (rc > 0) - rc--; - if (portp->argp != NULL) { - memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), - portp->argsize); - portp->argp = NULL; - } - writel(0, &cp->status); - portp->rc = rc; - clear_bit(ST_CMDING, &portp->state); - stli_dodelaycmd(portp, cp); - wake_up_interruptible(&portp->raw_wait); - } - } - -/* - * Check for any notification messages ready. This includes lots of - * different types of events - RX chars ready, RX break received, - * TX data low or empty in the slave, modem signals changed state. - */ - donerx = 0; - - if (ap->notify) { - nt = ap->changed; - ap->notify = 0; - tty = tty_port_tty_get(&portp->port); - - if (nt.signal & SG_DCD) { - oldsigs = portp->sigs; - portp->sigs = stli_mktiocm(nt.sigvalue); - clear_bit(ST_GETSIGS, &portp->state); - if ((portp->sigs & TIOCM_CD) && - ((oldsigs & TIOCM_CD) == 0)) - wake_up_interruptible(&portp->port.open_wait); - if ((oldsigs & TIOCM_CD) && - ((portp->sigs & TIOCM_CD) == 0)) { - if (portp->port.flags & ASYNC_CHECK_CD) { - if (tty) - tty_hangup(tty); - } - } - } - - if (nt.data & DT_TXEMPTY) - clear_bit(ST_TXBUSY, &portp->state); - if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { - if (tty != NULL) { - tty_wakeup(tty); - EBRDENABLE(brdp); - } - } - - if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { - if (tty != NULL) { - tty_insert_flip_char(tty, 0, TTY_BREAK); - if (portp->port.flags & ASYNC_SAK) { - do_SAK(tty); - EBRDENABLE(brdp); - } - tty_schedule_flip(tty); - } - } - tty_kref_put(tty); - - if (nt.data & DT_RXBUSY) { - donerx++; - stli_read(brdp, portp); - } - } - -/* - * It might seem odd that we are checking for more RX chars here. - * But, we need to handle the case where the tty buffer was previously - * filled, but we had more characters to pass up. The slave will not - * send any more RX notify messages until the RX buffer has been emptied. - * But it will leave the service bits on (since the buffer is not empty). - * So from here we can try to process more RX chars. - */ - if ((!donerx) && test_bit(ST_RXING, &portp->state)) { - clear_bit(ST_RXING, &portp->state); - stli_read(brdp, portp); - } - - return((test_bit(ST_OPENING, &portp->state) || - test_bit(ST_CLOSING, &portp->state) || - test_bit(ST_CMDING, &portp->state) || - test_bit(ST_TXBUSY, &portp->state) || - test_bit(ST_RXING, &portp->state)) ? 0 : 1); -} - -/*****************************************************************************/ - -/* - * Service all ports on a particular board. Assumes that the boards - * shared memory is enabled, and that the page pointer is pointed - * at the cdk header structure. - */ - -static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) -{ - struct stliport *portp; - unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; - unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; - unsigned char __iomem *slavep; - int bitpos, bitat, bitsize; - int channr, nrdevs, slavebitchange; - - bitsize = brdp->bitsize; - nrdevs = brdp->nrdevs; - -/* - * Check if slave wants any service. Basically we try to do as - * little work as possible here. There are 2 levels of service - * bits. So if there is nothing to do we bail early. We check - * 8 service bits at a time in the inner loop, so we can bypass - * the lot if none of them want service. - */ - memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), - bitsize); - - memset(&slavebits[0], 0, bitsize); - slavebitchange = 0; - - for (bitpos = 0; (bitpos < bitsize); bitpos++) { - if (hostbits[bitpos] == 0) - continue; - channr = bitpos * 8; - for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { - if (hostbits[bitpos] & bitat) { - portp = brdp->ports[(channr - 1)]; - if (stli_hostcmd(brdp, portp)) { - slavebitchange++; - slavebits[bitpos] |= bitat; - } - } - } - } - -/* - * If any of the ports are no longer busy then update them in the - * slave request bits. We need to do this after, since a host port - * service may initiate more slave requests. - */ - if (slavebitchange) { - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; - for (bitpos = 0; (bitpos < bitsize); bitpos++) { - if (readb(slavebits + bitpos)) - writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); - } - } -} - -/*****************************************************************************/ - -/* - * Driver poll routine. This routine polls the boards in use and passes - * messages back up to host when necessary. This is actually very - * CPU efficient, since we will always have the kernel poll clock, it - * adds only a few cycles when idle (since board service can be - * determined very easily), but when loaded generates no interrupts - * (with their expensive associated context change). - */ - -static void stli_poll(unsigned long arg) -{ - cdkhdr_t __iomem *hdrp; - struct stlibrd *brdp; - unsigned int brdnr; - - mod_timer(&stli_timerlist, STLI_TIMEOUT); - -/* - * Check each board and do any servicing required. - */ - for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { - brdp = stli_brds[brdnr]; - if (brdp == NULL) - continue; - if (!test_bit(BST_STARTED, &brdp->state)) - continue; - - spin_lock(&brd_lock); - EBRDENABLE(brdp); - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - if (readb(&hdrp->hostreq)) - stli_brdpoll(brdp, hdrp); - EBRDDISABLE(brdp); - spin_unlock(&brd_lock); - } -} - -/*****************************************************************************/ - -/* - * Translate the termios settings into the port setting structure of - * the slave. - */ - -static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, - asyport_t *pp, struct ktermios *tiosp) -{ - memset(pp, 0, sizeof(asyport_t)); - -/* - * Start of by setting the baud, char size, parity and stop bit info. - */ - pp->baudout = tty_get_baud_rate(tty); - if ((tiosp->c_cflag & CBAUD) == B38400) { - if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - pp->baudout = 57600; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - pp->baudout = 115200; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - pp->baudout = 230400; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - pp->baudout = 460800; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) - pp->baudout = (portp->baud_base / portp->custom_divisor); - } - if (pp->baudout > STL_MAXBAUD) - pp->baudout = STL_MAXBAUD; - pp->baudin = pp->baudout; - - switch (tiosp->c_cflag & CSIZE) { - case CS5: - pp->csize = 5; - break; - case CS6: - pp->csize = 6; - break; - case CS7: - pp->csize = 7; - break; - default: - pp->csize = 8; - break; - } - - if (tiosp->c_cflag & CSTOPB) - pp->stopbs = PT_STOP2; - else - pp->stopbs = PT_STOP1; - - if (tiosp->c_cflag & PARENB) { - if (tiosp->c_cflag & PARODD) - pp->parity = PT_ODDPARITY; - else - pp->parity = PT_EVENPARITY; - } else { - pp->parity = PT_NOPARITY; - } - -/* - * Set up any flow control options enabled. - */ - if (tiosp->c_iflag & IXON) { - pp->flow |= F_IXON; - if (tiosp->c_iflag & IXANY) - pp->flow |= F_IXANY; - } - if (tiosp->c_cflag & CRTSCTS) - pp->flow |= (F_RTSFLOW | F_CTSFLOW); - - pp->startin = tiosp->c_cc[VSTART]; - pp->stopin = tiosp->c_cc[VSTOP]; - pp->startout = tiosp->c_cc[VSTART]; - pp->stopout = tiosp->c_cc[VSTOP]; - -/* - * Set up the RX char marking mask with those RX error types we must - * catch. We can get the slave to help us out a little here, it will - * ignore parity errors and breaks for us, and mark parity errors in - * the data stream. - */ - if (tiosp->c_iflag & IGNPAR) - pp->iflag |= FI_IGNRXERRS; - if (tiosp->c_iflag & IGNBRK) - pp->iflag |= FI_IGNBREAK; - - portp->rxmarkmsk = 0; - if (tiosp->c_iflag & (INPCK | PARMRK)) - pp->iflag |= FI_1MARKRXERRS; - if (tiosp->c_iflag & BRKINT) - portp->rxmarkmsk |= BRKINT; - -/* - * Set up clocal processing as required. - */ - if (tiosp->c_cflag & CLOCAL) - portp->port.flags &= ~ASYNC_CHECK_CD; - else - portp->port.flags |= ASYNC_CHECK_CD; - -/* - * Transfer any persistent flags into the asyport structure. - */ - pp->pflag = (portp->pflag & 0xffff); - pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; - pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; - pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; -} - -/*****************************************************************************/ - -/* - * Construct a slave signals structure for setting the DTR and RTS - * signals as specified. - */ - -static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) -{ - memset(sp, 0, sizeof(asysigs_t)); - if (dtr >= 0) { - sp->signal |= SG_DTR; - sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); - } - if (rts >= 0) { - sp->signal |= SG_RTS; - sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); - } -} - -/*****************************************************************************/ - -/* - * Convert the signals returned from the slave into a local TIOCM type - * signals value. We keep them locally in TIOCM format. - */ - -static long stli_mktiocm(unsigned long sigvalue) -{ - long tiocm = 0; - tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); - tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); - tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); - tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); - tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); - tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); - return(tiocm); -} - -/*****************************************************************************/ - -/* - * All panels and ports actually attached have been worked out. All - * we need to do here is set up the appropriate per port data structures. - */ - -static int stli_initports(struct stlibrd *brdp) -{ - struct stliport *portp; - unsigned int i, panelnr, panelport; - - for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { - portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); - if (!portp) { - printk(KERN_WARNING "istallion: failed to allocate port structure\n"); - continue; - } - tty_port_init(&portp->port); - portp->port.ops = &stli_port_ops; - portp->magic = STLI_PORTMAGIC; - portp->portnr = i; - portp->brdnr = brdp->brdnr; - portp->panelnr = panelnr; - portp->baud_base = STL_BAUDBASE; - portp->port.close_delay = STL_CLOSEDELAY; - portp->closing_wait = 30 * HZ; - init_waitqueue_head(&portp->port.open_wait); - init_waitqueue_head(&portp->port.close_wait); - init_waitqueue_head(&portp->raw_wait); - panelport++; - if (panelport >= brdp->panels[panelnr]) { - panelport = 0; - panelnr++; - } - brdp->ports[i] = portp; - } - - return 0; -} - -/*****************************************************************************/ - -/* - * All the following routines are board specific hardware operations. - */ - -static void stli_ecpinit(struct stlibrd *brdp) -{ - unsigned long memconf; - - outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); - udelay(10); - outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); - udelay(100); - - memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; - outb(memconf, (brdp->iobase + ECP_ATMEMAR)); -} - -/*****************************************************************************/ - -static void stli_ecpenable(struct stlibrd *brdp) -{ - outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); -} - -/*****************************************************************************/ - -static void stli_ecpdisable(struct stlibrd *brdp) -{ - outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); -} - -/*****************************************************************************/ - -static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - void __iomem *ptr; - unsigned char val; - - if (offset > brdp->memsize) { - printk(KERN_ERR "istallion: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_ATPAGESIZE); - val = (unsigned char) (offset / ECP_ATPAGESIZE); - } - outb(val, (brdp->iobase + ECP_ATMEMPR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecpreset(struct stlibrd *brdp) -{ - outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); - udelay(10); - outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); - udelay(500); -} - -/*****************************************************************************/ - -static void stli_ecpintr(struct stlibrd *brdp) -{ - outb(0x1, brdp->iobase); -} - -/*****************************************************************************/ - -/* - * The following set of functions act on ECP EISA boards. - */ - -static void stli_ecpeiinit(struct stlibrd *brdp) -{ - unsigned long memconf; - - outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); - outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); - udelay(10); - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); - udelay(500); - - memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; - outb(memconf, (brdp->iobase + ECP_EIMEMARL)); - memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; - outb(memconf, (brdp->iobase + ECP_EIMEMARH)); -} - -/*****************************************************************************/ - -static void stli_ecpeienable(struct stlibrd *brdp) -{ - outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); -} - -/*****************************************************************************/ - -static void stli_ecpeidisable(struct stlibrd *brdp) -{ - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); -} - -/*****************************************************************************/ - -static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - void __iomem *ptr; - unsigned char val; - - if (offset > brdp->memsize) { - printk(KERN_ERR "istallion: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_EIPAGESIZE); - if (offset < ECP_EIPAGESIZE) - val = ECP_EIENABLE; - else - val = ECP_EIENABLE | 0x40; - } - outb(val, (brdp->iobase + ECP_EICONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecpeireset(struct stlibrd *brdp) -{ - outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); - udelay(10); - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); - udelay(500); -} - -/*****************************************************************************/ - -/* - * The following set of functions act on ECP MCA boards. - */ - -static void stli_ecpmcenable(struct stlibrd *brdp) -{ - outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); -} - -/*****************************************************************************/ - -static void stli_ecpmcdisable(struct stlibrd *brdp) -{ - outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); -} - -/*****************************************************************************/ - -static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - void __iomem *ptr; - unsigned char val; - - if (offset > brdp->memsize) { - printk(KERN_ERR "istallion: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_MCPAGESIZE); - val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; - } - outb(val, (brdp->iobase + ECP_MCCONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecpmcreset(struct stlibrd *brdp) -{ - outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); - udelay(10); - outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); - udelay(500); -} - -/*****************************************************************************/ - -/* - * The following set of functions act on ECP PCI boards. - */ - -static void stli_ecppciinit(struct stlibrd *brdp) -{ - outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); - udelay(10); - outb(0, (brdp->iobase + ECP_PCICONFR)); - udelay(500); -} - -/*****************************************************************************/ - -static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - void __iomem *ptr; - unsigned char val; - - if (offset > brdp->memsize) { - printk(KERN_ERR "istallion: shared memory pointer=%x out of " - "range at line=%d(%d), board=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); - val = (offset / ECP_PCIPAGESIZE) << 1; - } - outb(val, (brdp->iobase + ECP_PCICONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_ecppcireset(struct stlibrd *brdp) -{ - outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); - udelay(10); - outb(0, (brdp->iobase + ECP_PCICONFR)); - udelay(500); -} - -/*****************************************************************************/ - -/* - * The following routines act on ONboards. - */ - -static void stli_onbinit(struct stlibrd *brdp) -{ - unsigned long memconf; - - outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); - udelay(10); - outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); - mdelay(1000); - - memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; - outb(memconf, (brdp->iobase + ONB_ATMEMAR)); - outb(0x1, brdp->iobase); - mdelay(1); -} - -/*****************************************************************************/ - -static void stli_onbenable(struct stlibrd *brdp) -{ - outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); -} - -/*****************************************************************************/ - -static void stli_onbdisable(struct stlibrd *brdp) -{ - outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); -} - -/*****************************************************************************/ - -static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - void __iomem *ptr; - - if (offset > brdp->memsize) { - printk(KERN_ERR "istallion: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - } else { - ptr = brdp->membase + (offset % ONB_ATPAGESIZE); - } - return(ptr); -} - -/*****************************************************************************/ - -static void stli_onbreset(struct stlibrd *brdp) -{ - outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); - udelay(10); - outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * The following routines act on ONboard EISA. - */ - -static void stli_onbeinit(struct stlibrd *brdp) -{ - unsigned long memconf; - - outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); - outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); - udelay(10); - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); - mdelay(1000); - - memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; - outb(memconf, (brdp->iobase + ONB_EIMEMARL)); - memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; - outb(memconf, (brdp->iobase + ONB_EIMEMARH)); - outb(0x1, brdp->iobase); - mdelay(1); -} - -/*****************************************************************************/ - -static void stli_onbeenable(struct stlibrd *brdp) -{ - outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); -} - -/*****************************************************************************/ - -static void stli_onbedisable(struct stlibrd *brdp) -{ - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); -} - -/*****************************************************************************/ - -static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - void __iomem *ptr; - unsigned char val; - - if (offset > brdp->memsize) { - printk(KERN_ERR "istallion: shared memory pointer=%x out of " - "range at line=%d(%d), brd=%d\n", - (int) offset, line, __LINE__, brdp->brdnr); - ptr = NULL; - val = 0; - } else { - ptr = brdp->membase + (offset % ONB_EIPAGESIZE); - if (offset < ONB_EIPAGESIZE) - val = ONB_EIENABLE; - else - val = ONB_EIENABLE | 0x40; - } - outb(val, (brdp->iobase + ONB_EICONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_onbereset(struct stlibrd *brdp) -{ - outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); - udelay(10); - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * The following routines act on Brumby boards. - */ - -static void stli_bbyinit(struct stlibrd *brdp) -{ - outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); - udelay(10); - outb(0, (brdp->iobase + BBY_ATCONFR)); - mdelay(1000); - outb(0x1, brdp->iobase); - mdelay(1); -} - -/*****************************************************************************/ - -static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - void __iomem *ptr; - unsigned char val; - - BUG_ON(offset > brdp->memsize); - - ptr = brdp->membase + (offset % BBY_PAGESIZE); - val = (unsigned char) (offset / BBY_PAGESIZE); - outb(val, (brdp->iobase + BBY_ATCONFR)); - return(ptr); -} - -/*****************************************************************************/ - -static void stli_bbyreset(struct stlibrd *brdp) -{ - outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); - udelay(10); - outb(0, (brdp->iobase + BBY_ATCONFR)); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * The following routines act on original old Stallion boards. - */ - -static void stli_stalinit(struct stlibrd *brdp) -{ - outb(0x1, brdp->iobase); - mdelay(1000); -} - -/*****************************************************************************/ - -static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) -{ - BUG_ON(offset > brdp->memsize); - return brdp->membase + (offset % STAL_PAGESIZE); -} - -/*****************************************************************************/ - -static void stli_stalreset(struct stlibrd *brdp) -{ - u32 __iomem *vecp; - - vecp = (u32 __iomem *) (brdp->membase + 0x30); - writel(0xffff0000, vecp); - outb(0, brdp->iobase); - mdelay(1000); -} - -/*****************************************************************************/ - -/* - * Try to find an ECP board and initialize it. This handles only ECP - * board types. - */ - -static int stli_initecp(struct stlibrd *brdp) -{ - cdkecpsig_t sig; - cdkecpsig_t __iomem *sigsp; - unsigned int status, nxtid; - char *name; - int retval, panelnr, nrports; - - if ((brdp->iobase == 0) || (brdp->memaddr == 0)) { - retval = -ENODEV; - goto err; - } - - brdp->iosize = ECP_IOSIZE; - - if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { - retval = -EIO; - goto err; - } - -/* - * Based on the specific board type setup the common vars to access - * and enable shared memory. Set all board specific information now - * as well. - */ - switch (brdp->brdtype) { - case BRD_ECP: - brdp->memsize = ECP_MEMSIZE; - brdp->pagesize = ECP_ATPAGESIZE; - brdp->init = stli_ecpinit; - brdp->enable = stli_ecpenable; - brdp->reenable = stli_ecpenable; - brdp->disable = stli_ecpdisable; - brdp->getmemptr = stli_ecpgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecpreset; - name = "serial(EC8/64)"; - break; - - case BRD_ECPE: - brdp->memsize = ECP_MEMSIZE; - brdp->pagesize = ECP_EIPAGESIZE; - brdp->init = stli_ecpeiinit; - brdp->enable = stli_ecpeienable; - brdp->reenable = stli_ecpeienable; - brdp->disable = stli_ecpeidisable; - brdp->getmemptr = stli_ecpeigetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecpeireset; - name = "serial(EC8/64-EI)"; - break; - - case BRD_ECPMC: - brdp->memsize = ECP_MEMSIZE; - brdp->pagesize = ECP_MCPAGESIZE; - brdp->init = NULL; - brdp->enable = stli_ecpmcenable; - brdp->reenable = stli_ecpmcenable; - brdp->disable = stli_ecpmcdisable; - brdp->getmemptr = stli_ecpmcgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecpmcreset; - name = "serial(EC8/64-MCA)"; - break; - - case BRD_ECPPCI: - brdp->memsize = ECP_PCIMEMSIZE; - brdp->pagesize = ECP_PCIPAGESIZE; - brdp->init = stli_ecppciinit; - brdp->enable = NULL; - brdp->reenable = NULL; - brdp->disable = NULL; - brdp->getmemptr = stli_ecppcigetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_ecppcireset; - name = "serial(EC/RA-PCI)"; - break; - - default: - retval = -EINVAL; - goto err_reg; - } - -/* - * The per-board operations structure is all set up, so now let's go - * and get the board operational. Firstly initialize board configuration - * registers. Set the memory mapping info so we can get at the boards - * shared memory. - */ - EBRDINIT(brdp); - - brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); - if (brdp->membase == NULL) { - retval = -ENOMEM; - goto err_reg; - } - -/* - * Now that all specific code is set up, enable the shared memory and - * look for the a signature area that will tell us exactly what board - * this is, and what it is connected to it. - */ - EBRDENABLE(brdp); - sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); - memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); - EBRDDISABLE(brdp); - - if (sig.magic != cpu_to_le32(ECP_MAGIC)) { - retval = -ENODEV; - goto err_unmap; - } - -/* - * Scan through the signature looking at the panels connected to the - * board. Calculate the total number of ports as we go. - */ - for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { - status = sig.panelid[nxtid]; - if ((status & ECH_PNLIDMASK) != nxtid) - break; - - brdp->panelids[panelnr] = status; - nrports = (status & ECH_PNL16PORT) ? 16 : 8; - if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) - nxtid++; - brdp->panels[panelnr] = nrports; - brdp->nrports += nrports; - nxtid++; - brdp->nrpanels++; - } - - - set_bit(BST_FOUND, &brdp->state); - return 0; -err_unmap: - iounmap(brdp->membase); - brdp->membase = NULL; -err_reg: - release_region(brdp->iobase, brdp->iosize); -err: - return retval; -} - -/*****************************************************************************/ - -/* - * Try to find an ONboard, Brumby or Stallion board and initialize it. - * This handles only these board types. - */ - -static int stli_initonb(struct stlibrd *brdp) -{ - cdkonbsig_t sig; - cdkonbsig_t __iomem *sigsp; - char *name; - int i, retval; - -/* - * Do a basic sanity check on the IO and memory addresses. - */ - if (brdp->iobase == 0 || brdp->memaddr == 0) { - retval = -ENODEV; - goto err; - } - - brdp->iosize = ONB_IOSIZE; - - if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { - retval = -EIO; - goto err; - } - -/* - * Based on the specific board type setup the common vars to access - * and enable shared memory. Set all board specific information now - * as well. - */ - switch (brdp->brdtype) { - case BRD_ONBOARD: - case BRD_ONBOARD2: - brdp->memsize = ONB_MEMSIZE; - brdp->pagesize = ONB_ATPAGESIZE; - brdp->init = stli_onbinit; - brdp->enable = stli_onbenable; - brdp->reenable = stli_onbenable; - brdp->disable = stli_onbdisable; - brdp->getmemptr = stli_onbgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_onbreset; - if (brdp->memaddr > 0x100000) - brdp->enabval = ONB_MEMENABHI; - else - brdp->enabval = ONB_MEMENABLO; - name = "serial(ONBoard)"; - break; - - case BRD_ONBOARDE: - brdp->memsize = ONB_EIMEMSIZE; - brdp->pagesize = ONB_EIPAGESIZE; - brdp->init = stli_onbeinit; - brdp->enable = stli_onbeenable; - brdp->reenable = stli_onbeenable; - brdp->disable = stli_onbedisable; - brdp->getmemptr = stli_onbegetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_onbereset; - name = "serial(ONBoard/E)"; - break; - - case BRD_BRUMBY4: - brdp->memsize = BBY_MEMSIZE; - brdp->pagesize = BBY_PAGESIZE; - brdp->init = stli_bbyinit; - brdp->enable = NULL; - brdp->reenable = NULL; - brdp->disable = NULL; - brdp->getmemptr = stli_bbygetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_bbyreset; - name = "serial(Brumby)"; - break; - - case BRD_STALLION: - brdp->memsize = STAL_MEMSIZE; - brdp->pagesize = STAL_PAGESIZE; - brdp->init = stli_stalinit; - brdp->enable = NULL; - brdp->reenable = NULL; - brdp->disable = NULL; - brdp->getmemptr = stli_stalgetmemptr; - brdp->intr = stli_ecpintr; - brdp->reset = stli_stalreset; - name = "serial(Stallion)"; - break; - - default: - retval = -EINVAL; - goto err_reg; - } - -/* - * The per-board operations structure is all set up, so now let's go - * and get the board operational. Firstly initialize board configuration - * registers. Set the memory mapping info so we can get at the boards - * shared memory. - */ - EBRDINIT(brdp); - - brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); - if (brdp->membase == NULL) { - retval = -ENOMEM; - goto err_reg; - } - -/* - * Now that all specific code is set up, enable the shared memory and - * look for the a signature area that will tell us exactly what board - * this is, and how many ports. - */ - EBRDENABLE(brdp); - sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); - memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); - EBRDDISABLE(brdp); - - if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || - sig.magic1 != cpu_to_le16(ONB_MAGIC1) || - sig.magic2 != cpu_to_le16(ONB_MAGIC2) || - sig.magic3 != cpu_to_le16(ONB_MAGIC3)) { - retval = -ENODEV; - goto err_unmap; - } - -/* - * Scan through the signature alive mask and calculate how many ports - * there are on this board. - */ - brdp->nrpanels = 1; - if (sig.amask1) { - brdp->nrports = 32; - } else { - for (i = 0; (i < 16); i++) { - if (((sig.amask0 << i) & 0x8000) == 0) - break; - } - brdp->nrports = i; - } - brdp->panels[0] = brdp->nrports; - - - set_bit(BST_FOUND, &brdp->state); - return 0; -err_unmap: - iounmap(brdp->membase); - brdp->membase = NULL; -err_reg: - release_region(brdp->iobase, brdp->iosize); -err: - return retval; -} - -/*****************************************************************************/ - -/* - * Start up a running board. This routine is only called after the - * code has been down loaded to the board and is operational. It will - * read in the memory map, and get the show on the road... - */ - -static int stli_startbrd(struct stlibrd *brdp) -{ - cdkhdr_t __iomem *hdrp; - cdkmem_t __iomem *memp; - cdkasy_t __iomem *ap; - unsigned long flags; - unsigned int portnr, nrdevs, i; - struct stliport *portp; - int rc = 0; - u32 memoff; - - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); - nrdevs = hdrp->nrdevs; - -#if 0 - printk("%s(%d): CDK version %d.%d.%d --> " - "nrdevs=%d memp=%x hostp=%x slavep=%x\n", - __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), - readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), - readl(&hdrp->slavep)); -#endif - - if (nrdevs < (brdp->nrports + 1)) { - printk(KERN_ERR "istallion: slave failed to allocate memory for " - "all devices, devices=%d\n", nrdevs); - brdp->nrports = nrdevs - 1; - } - brdp->nrdevs = nrdevs; - brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; - brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; - brdp->bitsize = (nrdevs + 7) / 8; - memoff = readl(&hdrp->memp); - if (memoff > brdp->memsize) { - printk(KERN_ERR "istallion: corrupted shared memory region?\n"); - rc = -EIO; - goto stli_donestartup; - } - memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); - if (readw(&memp->dtype) != TYP_ASYNCTRL) { - printk(KERN_ERR "istallion: no slave control device found\n"); - goto stli_donestartup; - } - memp++; - -/* - * Cycle through memory allocation of each port. We are guaranteed to - * have all ports inside the first page of slave window, so no need to - * change pages while reading memory map. - */ - for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { - if (readw(&memp->dtype) != TYP_ASYNC) - break; - portp = brdp->ports[portnr]; - if (portp == NULL) - break; - portp->devnr = i; - portp->addr = readl(&memp->offset); - portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); - portp->portidx = (unsigned char) (i / 8); - portp->portbit = (unsigned char) (0x1 << (i % 8)); - } - - writeb(0xff, &hdrp->slavereq); - -/* - * For each port setup a local copy of the RX and TX buffer offsets - * and sizes. We do this separate from the above, because we need to - * move the shared memory page... - */ - for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { - portp = brdp->ports[portnr]; - if (portp == NULL) - break; - if (portp->addr == 0) - break; - ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); - if (ap != NULL) { - portp->rxsize = readw(&ap->rxq.size); - portp->txsize = readw(&ap->txq.size); - portp->rxoffset = readl(&ap->rxq.offset); - portp->txoffset = readl(&ap->txq.offset); - } - } - -stli_donestartup: - EBRDDISABLE(brdp); - spin_unlock_irqrestore(&brd_lock, flags); - - if (rc == 0) - set_bit(BST_STARTED, &brdp->state); - - if (! stli_timeron) { - stli_timeron++; - mod_timer(&stli_timerlist, STLI_TIMEOUT); - } - - return rc; -} - -/*****************************************************************************/ - -/* - * Probe and initialize the specified board. - */ - -static int __devinit stli_brdinit(struct stlibrd *brdp) -{ - int retval; - - switch (brdp->brdtype) { - case BRD_ECP: - case BRD_ECPE: - case BRD_ECPMC: - case BRD_ECPPCI: - retval = stli_initecp(brdp); - break; - case BRD_ONBOARD: - case BRD_ONBOARDE: - case BRD_ONBOARD2: - case BRD_BRUMBY4: - case BRD_STALLION: - retval = stli_initonb(brdp); - break; - default: - printk(KERN_ERR "istallion: board=%d is unknown board " - "type=%d\n", brdp->brdnr, brdp->brdtype); - retval = -ENODEV; - } - - if (retval) - return retval; - - stli_initports(brdp); - printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x " - "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], - brdp->brdnr, brdp->iobase, (int) brdp->memaddr, - brdp->nrpanels, brdp->nrports); - return 0; -} - -#if STLI_EISAPROBE != 0 -/*****************************************************************************/ - -/* - * Probe around trying to find where the EISA boards shared memory - * might be. This is a bit if hack, but it is the best we can do. - */ - -static int stli_eisamemprobe(struct stlibrd *brdp) -{ - cdkecpsig_t ecpsig, __iomem *ecpsigp; - cdkonbsig_t onbsig, __iomem *onbsigp; - int i, foundit; - -/* - * First up we reset the board, to get it into a known state. There - * is only 2 board types here we need to worry about. Don;t use the - * standard board init routine here, it programs up the shared - * memory address, and we don't know it yet... - */ - if (brdp->brdtype == BRD_ECPE) { - outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); - outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); - udelay(10); - outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); - udelay(500); - stli_ecpeienable(brdp); - } else if (brdp->brdtype == BRD_ONBOARDE) { - outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); - outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); - udelay(10); - outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); - mdelay(100); - outb(0x1, brdp->iobase); - mdelay(1); - stli_onbeenable(brdp); - } else { - return -ENODEV; - } - - foundit = 0; - brdp->memsize = ECP_MEMSIZE; - -/* - * Board shared memory is enabled, so now we have a poke around and - * see if we can find it. - */ - for (i = 0; (i < stli_eisamempsize); i++) { - brdp->memaddr = stli_eisamemprobeaddrs[i]; - brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); - if (brdp->membase == NULL) - continue; - - if (brdp->brdtype == BRD_ECPE) { - ecpsigp = stli_ecpeigetmemptr(brdp, - CDK_SIGADDR, __LINE__); - memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); - if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) - foundit = 1; - } else { - onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, - CDK_SIGADDR, __LINE__); - memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); - if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && - (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && - (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && - (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) - foundit = 1; - } - - iounmap(brdp->membase); - if (foundit) - break; - } - -/* - * Regardless of whether we found the shared memory or not we must - * disable the region. After that return success or failure. - */ - if (brdp->brdtype == BRD_ECPE) - stli_ecpeidisable(brdp); - else - stli_onbedisable(brdp); - - if (! foundit) { - brdp->memaddr = 0; - brdp->membase = NULL; - printk(KERN_ERR "istallion: failed to probe shared memory " - "region for %s in EISA slot=%d\n", - stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); - return -ENODEV; - } - return 0; -} -#endif - -static int stli_getbrdnr(void) -{ - unsigned int i; - - for (i = 0; i < STL_MAXBRDS; i++) { - if (!stli_brds[i]) { - if (i >= stli_nrbrds) - stli_nrbrds = i + 1; - return i; - } - } - return -1; -} - -#if STLI_EISAPROBE != 0 -/*****************************************************************************/ - -/* - * Probe around and try to find any EISA boards in system. The biggest - * problem here is finding out what memory address is associated with - * an EISA board after it is found. The registers of the ECPE and - * ONboardE are not readable - so we can't read them from there. We - * don't have access to the EISA CMOS (or EISA BIOS) so we don't - * actually have any way to find out the real value. The best we can - * do is go probing around in the usual places hoping we can find it. - */ - -static int __init stli_findeisabrds(void) -{ - struct stlibrd *brdp; - unsigned int iobase, eid, i; - int brdnr, found = 0; - -/* - * Firstly check if this is an EISA system. If this is not an EISA system then - * don't bother going any further! - */ - if (EISA_bus) - return 0; - -/* - * Looks like an EISA system, so go searching for EISA boards. - */ - for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { - outb(0xff, (iobase + 0xc80)); - eid = inb(iobase + 0xc80); - eid |= inb(iobase + 0xc81) << 8; - if (eid != STL_EISAID) - continue; - -/* - * We have found a board. Need to check if this board was - * statically configured already (just in case!). - */ - for (i = 0; (i < STL_MAXBRDS); i++) { - brdp = stli_brds[i]; - if (brdp == NULL) - continue; - if (brdp->iobase == iobase) - break; - } - if (i < STL_MAXBRDS) - continue; - -/* - * We have found a Stallion board and it is not configured already. - * Allocate a board structure and initialize it. - */ - if ((brdp = stli_allocbrd()) == NULL) - return found ? : -ENOMEM; - brdnr = stli_getbrdnr(); - if (brdnr < 0) - return found ? : -ENOMEM; - brdp->brdnr = (unsigned int)brdnr; - eid = inb(iobase + 0xc82); - if (eid == ECP_EISAID) - brdp->brdtype = BRD_ECPE; - else if (eid == ONB_EISAID) - brdp->brdtype = BRD_ONBOARDE; - else - brdp->brdtype = BRD_UNKNOWN; - brdp->iobase = iobase; - outb(0x1, (iobase + 0xc84)); - if (stli_eisamemprobe(brdp)) - outb(0, (iobase + 0xc84)); - if (stli_brdinit(brdp) < 0) { - kfree(brdp); - continue; - } - - stli_brds[brdp->brdnr] = brdp; - found++; - - for (i = 0; i < brdp->nrports; i++) - tty_register_device(stli_serial, - brdp->brdnr * STL_MAXPORTS + i, NULL); - } - - return found; -} -#else -static inline int stli_findeisabrds(void) { return 0; } -#endif - -/*****************************************************************************/ - -/* - * Find the next available board number that is free. - */ - -/*****************************************************************************/ - -/* - * We have a Stallion board. Allocate a board structure and - * initialize it. Read its IO and MEMORY resources from PCI - * configuration space. - */ - -static int __devinit stli_pciprobe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct stlibrd *brdp; - unsigned int i; - int brdnr, retval = -EIO; - - retval = pci_enable_device(pdev); - if (retval) - goto err; - brdp = stli_allocbrd(); - if (brdp == NULL) { - retval = -ENOMEM; - goto err; - } - mutex_lock(&stli_brdslock); - brdnr = stli_getbrdnr(); - if (brdnr < 0) { - printk(KERN_INFO "istallion: too many boards found, " - "maximum supported %d\n", STL_MAXBRDS); - mutex_unlock(&stli_brdslock); - retval = -EIO; - goto err_fr; - } - brdp->brdnr = (unsigned int)brdnr; - stli_brds[brdp->brdnr] = brdp; - mutex_unlock(&stli_brdslock); - brdp->brdtype = BRD_ECPPCI; -/* - * We have all resources from the board, so lets setup the actual - * board structure now. - */ - brdp->iobase = pci_resource_start(pdev, 3); - brdp->memaddr = pci_resource_start(pdev, 2); - retval = stli_brdinit(brdp); - if (retval) - goto err_null; - - set_bit(BST_PROBED, &brdp->state); - pci_set_drvdata(pdev, brdp); - - EBRDENABLE(brdp); - brdp->enable = NULL; - brdp->disable = NULL; - - for (i = 0; i < brdp->nrports; i++) - tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i, - &pdev->dev); - - return 0; -err_null: - stli_brds[brdp->brdnr] = NULL; -err_fr: - kfree(brdp); -err: - return retval; -} - -static void __devexit stli_pciremove(struct pci_dev *pdev) -{ - struct stlibrd *brdp = pci_get_drvdata(pdev); - - stli_cleanup_ports(brdp); - - iounmap(brdp->membase); - if (brdp->iosize > 0) - release_region(brdp->iobase, brdp->iosize); - - stli_brds[brdp->brdnr] = NULL; - kfree(brdp); -} - -static struct pci_driver stli_pcidriver = { - .name = "istallion", - .id_table = istallion_pci_tbl, - .probe = stli_pciprobe, - .remove = __devexit_p(stli_pciremove) -}; -/*****************************************************************************/ - -/* - * Allocate a new board structure. Fill out the basic info in it. - */ - -static struct stlibrd *stli_allocbrd(void) -{ - struct stlibrd *brdp; - - brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); - if (!brdp) { - printk(KERN_ERR "istallion: failed to allocate memory " - "(size=%Zd)\n", sizeof(struct stlibrd)); - return NULL; - } - brdp->magic = STLI_BOARDMAGIC; - return brdp; -} - -/*****************************************************************************/ - -/* - * Scan through all the boards in the configuration and see what we - * can find. - */ - -static int __init stli_initbrds(void) -{ - struct stlibrd *brdp, *nxtbrdp; - struct stlconf conf; - unsigned int i, j, found = 0; - int retval; - - for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); - stli_nrbrds++) { - memset(&conf, 0, sizeof(conf)); - if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) - continue; - if ((brdp = stli_allocbrd()) == NULL) - continue; - brdp->brdnr = stli_nrbrds; - brdp->brdtype = conf.brdtype; - brdp->iobase = conf.ioaddr1; - brdp->memaddr = conf.memaddr; - if (stli_brdinit(brdp) < 0) { - kfree(brdp); - continue; - } - stli_brds[brdp->brdnr] = brdp; - found++; - - for (i = 0; i < brdp->nrports; i++) - tty_register_device(stli_serial, - brdp->brdnr * STL_MAXPORTS + i, NULL); - } - - retval = stli_findeisabrds(); - if (retval > 0) - found += retval; - -/* - * All found boards are initialized. Now for a little optimization, if - * no boards are sharing the "shared memory" regions then we can just - * leave them all enabled. This is in fact the usual case. - */ - stli_shared = 0; - if (stli_nrbrds > 1) { - for (i = 0; (i < stli_nrbrds); i++) { - brdp = stli_brds[i]; - if (brdp == NULL) - continue; - for (j = i + 1; (j < stli_nrbrds); j++) { - nxtbrdp = stli_brds[j]; - if (nxtbrdp == NULL) - continue; - if ((brdp->membase >= nxtbrdp->membase) && - (brdp->membase <= (nxtbrdp->membase + - nxtbrdp->memsize - 1))) { - stli_shared++; - break; - } - } - } - } - - if (stli_shared == 0) { - for (i = 0; (i < stli_nrbrds); i++) { - brdp = stli_brds[i]; - if (brdp == NULL) - continue; - if (test_bit(BST_FOUND, &brdp->state)) { - EBRDENABLE(brdp); - brdp->enable = NULL; - brdp->disable = NULL; - } - } - } - - retval = pci_register_driver(&stli_pcidriver); - if (retval && found == 0) { - printk(KERN_ERR "Neither isa nor eisa cards found nor pci " - "driver can be registered!\n"); - goto err; - } - - return 0; -err: - return retval; -} - -/*****************************************************************************/ - -/* - * Code to handle an "staliomem" read operation. This device is the - * contents of the board shared memory. It is used for down loading - * the slave image (and debugging :-) - */ - -static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) -{ - unsigned long flags; - void __iomem *memptr; - struct stlibrd *brdp; - unsigned int brdnr; - int size, n; - void *p; - loff_t off = *offp; - - brdnr = iminor(fp->f_path.dentry->d_inode); - if (brdnr >= stli_nrbrds) - return -ENODEV; - brdp = stli_brds[brdnr]; - if (brdp == NULL) - return -ENODEV; - if (brdp->state == 0) - return -ENODEV; - if (off >= brdp->memsize || off + count < off) - return 0; - - size = min(count, (size_t)(brdp->memsize - off)); - - /* - * Copy the data a page at a time - */ - - p = (void *)__get_free_page(GFP_KERNEL); - if(p == NULL) - return -ENOMEM; - - while (size > 0) { - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - memptr = EBRDGETMEMPTR(brdp, off); - n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); - n = min(n, (int)PAGE_SIZE); - memcpy_fromio(p, memptr, n); - EBRDDISABLE(brdp); - spin_unlock_irqrestore(&brd_lock, flags); - if (copy_to_user(buf, p, n)) { - count = -EFAULT; - goto out; - } - off += n; - buf += n; - size -= n; - } -out: - *offp = off; - free_page((unsigned long)p); - return count; -} - -/*****************************************************************************/ - -/* - * Code to handle an "staliomem" write operation. This device is the - * contents of the board shared memory. It is used for down loading - * the slave image (and debugging :-) - * - * FIXME: copy under lock - */ - -static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) -{ - unsigned long flags; - void __iomem *memptr; - struct stlibrd *brdp; - char __user *chbuf; - unsigned int brdnr; - int size, n; - void *p; - loff_t off = *offp; - - brdnr = iminor(fp->f_path.dentry->d_inode); - - if (brdnr >= stli_nrbrds) - return -ENODEV; - brdp = stli_brds[brdnr]; - if (brdp == NULL) - return -ENODEV; - if (brdp->state == 0) - return -ENODEV; - if (off >= brdp->memsize || off + count < off) - return 0; - - chbuf = (char __user *) buf; - size = min(count, (size_t)(brdp->memsize - off)); - - /* - * Copy the data a page at a time - */ - - p = (void *)__get_free_page(GFP_KERNEL); - if(p == NULL) - return -ENOMEM; - - while (size > 0) { - n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); - n = min(n, (int)PAGE_SIZE); - if (copy_from_user(p, chbuf, n)) { - if (count == 0) - count = -EFAULT; - goto out; - } - spin_lock_irqsave(&brd_lock, flags); - EBRDENABLE(brdp); - memptr = EBRDGETMEMPTR(brdp, off); - memcpy_toio(memptr, p, n); - EBRDDISABLE(brdp); - spin_unlock_irqrestore(&brd_lock, flags); - off += n; - chbuf += n; - size -= n; - } -out: - free_page((unsigned long) p); - *offp = off; - return count; -} - -/*****************************************************************************/ - -/* - * Return the board stats structure to user app. - */ - -static int stli_getbrdstats(combrd_t __user *bp) -{ - struct stlibrd *brdp; - unsigned int i; - - if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) - return -EFAULT; - if (stli_brdstats.brd >= STL_MAXBRDS) - return -ENODEV; - brdp = stli_brds[stli_brdstats.brd]; - if (brdp == NULL) - return -ENODEV; - - memset(&stli_brdstats, 0, sizeof(combrd_t)); - - stli_brdstats.brd = brdp->brdnr; - stli_brdstats.type = brdp->brdtype; - stli_brdstats.hwid = 0; - stli_brdstats.state = brdp->state; - stli_brdstats.ioaddr = brdp->iobase; - stli_brdstats.memaddr = brdp->memaddr; - stli_brdstats.nrpanels = brdp->nrpanels; - stli_brdstats.nrports = brdp->nrports; - for (i = 0; (i < brdp->nrpanels); i++) { - stli_brdstats.panels[i].panel = i; - stli_brdstats.panels[i].hwid = brdp->panelids[i]; - stli_brdstats.panels[i].nrports = brdp->panels[i]; - } - - if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) - return -EFAULT; - return 0; -} - -/*****************************************************************************/ - -/* - * Resolve the referenced port number into a port struct pointer. - */ - -static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, - unsigned int portnr) -{ - struct stlibrd *brdp; - unsigned int i; - - if (brdnr >= STL_MAXBRDS) - return NULL; - brdp = stli_brds[brdnr]; - if (brdp == NULL) - return NULL; - for (i = 0; (i < panelnr); i++) - portnr += brdp->panels[i]; - if (portnr >= brdp->nrports) - return NULL; - return brdp->ports[portnr]; -} - -/*****************************************************************************/ - -/* - * Return the port stats structure to user app. A NULL port struct - * pointer passed in means that we need to find out from the app - * what port to get stats for (used through board control device). - */ - -static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp) -{ - unsigned long flags; - struct stlibrd *brdp; - int rc; - - memset(&stli_comstats, 0, sizeof(comstats_t)); - - if (portp == NULL) - return -ENODEV; - brdp = stli_brds[portp->brdnr]; - if (brdp == NULL) - return -ENODEV; - - mutex_lock(&portp->port.mutex); - if (test_bit(BST_STARTED, &brdp->state)) { - if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, - &stli_cdkstats, sizeof(asystats_t), 1)) < 0) { - mutex_unlock(&portp->port.mutex); - return rc; - } - } else { - memset(&stli_cdkstats, 0, sizeof(asystats_t)); - } - - stli_comstats.brd = portp->brdnr; - stli_comstats.panel = portp->panelnr; - stli_comstats.port = portp->portnr; - stli_comstats.state = portp->state; - stli_comstats.flags = portp->port.flags; - - spin_lock_irqsave(&brd_lock, flags); - if (tty != NULL) { - if (portp->port.tty == tty) { - stli_comstats.ttystate = tty->flags; - stli_comstats.rxbuffered = -1; - if (tty->termios != NULL) { - stli_comstats.cflags = tty->termios->c_cflag; - stli_comstats.iflags = tty->termios->c_iflag; - stli_comstats.oflags = tty->termios->c_oflag; - stli_comstats.lflags = tty->termios->c_lflag; - } - } - } - spin_unlock_irqrestore(&brd_lock, flags); - - stli_comstats.txtotal = stli_cdkstats.txchars; - stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; - stli_comstats.txbuffered = stli_cdkstats.txringq; - stli_comstats.rxbuffered += stli_cdkstats.rxringq; - stli_comstats.rxoverrun = stli_cdkstats.overruns; - stli_comstats.rxparity = stli_cdkstats.parity; - stli_comstats.rxframing = stli_cdkstats.framing; - stli_comstats.rxlost = stli_cdkstats.ringover; - stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; - stli_comstats.txbreaks = stli_cdkstats.txbreaks; - stli_comstats.txxon = stli_cdkstats.txstart; - stli_comstats.txxoff = stli_cdkstats.txstop; - stli_comstats.rxxon = stli_cdkstats.rxstart; - stli_comstats.rxxoff = stli_cdkstats.rxstop; - stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; - stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; - stli_comstats.modem = stli_cdkstats.dcdcnt; - stli_comstats.hwid = stli_cdkstats.hwid; - stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); - mutex_unlock(&portp->port.mutex); - - return 0; -} - -/*****************************************************************************/ - -/* - * Return the port stats structure to user app. A NULL port struct - * pointer passed in means that we need to find out from the app - * what port to get stats for (used through board control device). - */ - -static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, - comstats_t __user *cp) -{ - struct stlibrd *brdp; - int rc; - - if (!portp) { - if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) - return -EFAULT; - portp = stli_getport(stli_comstats.brd, stli_comstats.panel, - stli_comstats.port); - if (!portp) - return -ENODEV; - } - - brdp = stli_brds[portp->brdnr]; - if (!brdp) - return -ENODEV; - - if ((rc = stli_portcmdstats(tty, portp)) < 0) - return rc; - - return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? - -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Clear the port stats structure. We also return it zeroed out... - */ - -static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) -{ - struct stlibrd *brdp; - int rc; - - if (!portp) { - if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) - return -EFAULT; - portp = stli_getport(stli_comstats.brd, stli_comstats.panel, - stli_comstats.port); - if (!portp) - return -ENODEV; - } - - brdp = stli_brds[portp->brdnr]; - if (!brdp) - return -ENODEV; - - mutex_lock(&portp->port.mutex); - - if (test_bit(BST_STARTED, &brdp->state)) { - if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) { - mutex_unlock(&portp->port.mutex); - return rc; - } - } - - memset(&stli_comstats, 0, sizeof(comstats_t)); - stli_comstats.brd = portp->brdnr; - stli_comstats.panel = portp->panelnr; - stli_comstats.port = portp->portnr; - mutex_unlock(&portp->port.mutex); - - if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) - return -EFAULT; - return 0; -} - -/*****************************************************************************/ - -/* - * Return the entire driver ports structure to a user app. - */ - -static int stli_getportstruct(struct stliport __user *arg) -{ - struct stliport stli_dummyport; - struct stliport *portp; - - if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) - return -EFAULT; - portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, - stli_dummyport.portnr); - if (!portp) - return -ENODEV; - if (copy_to_user(arg, portp, sizeof(struct stliport))) - return -EFAULT; - return 0; -} - -/*****************************************************************************/ - -/* - * Return the entire driver board structure to a user app. - */ - -static int stli_getbrdstruct(struct stlibrd __user *arg) -{ - struct stlibrd stli_dummybrd; - struct stlibrd *brdp; - - if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) - return -EFAULT; - if (stli_dummybrd.brdnr >= STL_MAXBRDS) - return -ENODEV; - brdp = stli_brds[stli_dummybrd.brdnr]; - if (!brdp) - return -ENODEV; - if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) - return -EFAULT; - return 0; -} - -/*****************************************************************************/ - -/* - * The "staliomem" device is also required to do some special operations on - * the board. We need to be able to send an interrupt to the board, - * reset it, and start/stop it. - */ - -static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg) -{ - struct stlibrd *brdp; - int brdnr, rc, done; - void __user *argp = (void __user *)arg; - -/* - * First up handle the board independent ioctls. - */ - done = 0; - rc = 0; - - switch (cmd) { - case COM_GETPORTSTATS: - rc = stli_getportstats(NULL, NULL, argp); - done++; - break; - case COM_CLRPORTSTATS: - rc = stli_clrportstats(NULL, argp); - done++; - break; - case COM_GETBRDSTATS: - rc = stli_getbrdstats(argp); - done++; - break; - case COM_READPORT: - rc = stli_getportstruct(argp); - done++; - break; - case COM_READBOARD: - rc = stli_getbrdstruct(argp); - done++; - break; - } - if (done) - return rc; - -/* - * Now handle the board specific ioctls. These all depend on the - * minor number of the device they were called from. - */ - brdnr = iminor(fp->f_dentry->d_inode); - if (brdnr >= STL_MAXBRDS) - return -ENODEV; - brdp = stli_brds[brdnr]; - if (!brdp) - return -ENODEV; - if (brdp->state == 0) - return -ENODEV; - - switch (cmd) { - case STL_BINTR: - EBRDINTR(brdp); - break; - case STL_BSTART: - rc = stli_startbrd(brdp); - break; - case STL_BSTOP: - clear_bit(BST_STARTED, &brdp->state); - break; - case STL_BRESET: - clear_bit(BST_STARTED, &brdp->state); - EBRDRESET(brdp); - if (stli_shared == 0) { - if (brdp->reenable != NULL) - (* brdp->reenable)(brdp); - } - break; - default: - rc = -ENOIOCTLCMD; - break; - } - return rc; -} - -static const struct tty_operations stli_ops = { - .open = stli_open, - .close = stli_close, - .write = stli_write, - .put_char = stli_putchar, - .flush_chars = stli_flushchars, - .write_room = stli_writeroom, - .chars_in_buffer = stli_charsinbuffer, - .ioctl = stli_ioctl, - .set_termios = stli_settermios, - .throttle = stli_throttle, - .unthrottle = stli_unthrottle, - .stop = stli_stop, - .start = stli_start, - .hangup = stli_hangup, - .flush_buffer = stli_flushbuffer, - .break_ctl = stli_breakctl, - .wait_until_sent = stli_waituntilsent, - .send_xchar = stli_sendxchar, - .tiocmget = stli_tiocmget, - .tiocmset = stli_tiocmset, - .proc_fops = &stli_proc_fops, -}; - -static const struct tty_port_operations stli_port_ops = { - .carrier_raised = stli_carrier_raised, - .dtr_rts = stli_dtr_rts, - .activate = stli_activate, - .shutdown = stli_shutdown, -}; - -/*****************************************************************************/ -/* - * Loadable module initialization stuff. - */ - -static void istallion_cleanup_isa(void) -{ - struct stlibrd *brdp; - unsigned int j; - - for (j = 0; (j < stli_nrbrds); j++) { - if ((brdp = stli_brds[j]) == NULL || - test_bit(BST_PROBED, &brdp->state)) - continue; - - stli_cleanup_ports(brdp); - - iounmap(brdp->membase); - if (brdp->iosize > 0) - release_region(brdp->iobase, brdp->iosize); - kfree(brdp); - stli_brds[j] = NULL; - } -} - -static int __init istallion_module_init(void) -{ - unsigned int i; - int retval; - - printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); - - spin_lock_init(&stli_lock); - spin_lock_init(&brd_lock); - - stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); - if (!stli_txcookbuf) { - printk(KERN_ERR "istallion: failed to allocate memory " - "(size=%d)\n", STLI_TXBUFSIZE); - retval = -ENOMEM; - goto err; - } - - stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); - if (!stli_serial) { - retval = -ENOMEM; - goto err_free; - } - - stli_serial->owner = THIS_MODULE; - stli_serial->driver_name = stli_drvname; - stli_serial->name = stli_serialname; - stli_serial->major = STL_SERIALMAJOR; - stli_serial->minor_start = 0; - stli_serial->type = TTY_DRIVER_TYPE_SERIAL; - stli_serial->subtype = SERIAL_TYPE_NORMAL; - stli_serial->init_termios = stli_deftermios; - stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(stli_serial, &stli_ops); - - retval = tty_register_driver(stli_serial); - if (retval) { - printk(KERN_ERR "istallion: failed to register serial driver\n"); - goto err_ttyput; - } - - retval = stli_initbrds(); - if (retval) - goto err_ttyunr; - -/* - * Set up a character driver for the shared memory region. We need this - * to down load the slave code image. Also it is a useful debugging tool. - */ - retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem); - if (retval) { - printk(KERN_ERR "istallion: failed to register serial memory " - "device\n"); - goto err_deinit; - } - - istallion_class = class_create(THIS_MODULE, "staliomem"); - for (i = 0; i < 4; i++) - device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), - NULL, "staliomem%d", i); - - return 0; -err_deinit: - pci_unregister_driver(&stli_pcidriver); - istallion_cleanup_isa(); -err_ttyunr: - tty_unregister_driver(stli_serial); -err_ttyput: - put_tty_driver(stli_serial); -err_free: - kfree(stli_txcookbuf); -err: - return retval; -} - -/*****************************************************************************/ - -static void __exit istallion_module_exit(void) -{ - unsigned int j; - - printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, - stli_drvversion); - - if (stli_timeron) { - stli_timeron = 0; - del_timer_sync(&stli_timerlist); - } - - unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); - - for (j = 0; j < 4; j++) - device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); - class_destroy(istallion_class); - - pci_unregister_driver(&stli_pcidriver); - istallion_cleanup_isa(); - - tty_unregister_driver(stli_serial); - put_tty_driver(stli_serial); - - kfree(stli_txcookbuf); -} - -module_init(istallion_module_init); -module_exit(istallion_module_exit); diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c deleted file mode 100644 index 602643a40b4b..000000000000 --- a/drivers/char/riscom8.c +++ /dev/null @@ -1,1560 +0,0 @@ -/* - * linux/drivers/char/riscom.c -- RISCom/8 multiport serial driver. - * - * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) - * - * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. The RISCom/8 card - * programming info was obtained from various drivers for other OSes - * (FreeBSD, ISC, etc), but no source code from those drivers were - * directly included in this driver. - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Revision 1.1 - * - * ChangeLog: - * Arnaldo Carvalho de Melo - 27-Jun-2001 - * - get rid of check_region and several cleanups - */ - -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include "riscom8.h" -#include "riscom8_reg.h" - -/* Am I paranoid or not ? ;-) */ -#define RISCOM_PARANOIA_CHECK - -/* - * Crazy InteliCom/8 boards sometimes have swapped CTS & DSR signals. - * You can slightly speed up things by #undefing the following option, - * if you are REALLY sure that your board is correct one. - */ - -#define RISCOM_BRAIN_DAMAGED_CTS - -/* - * The following defines are mostly for testing purposes. But if you need - * some nice reporting in your syslog, you can define them also. - */ -#undef RC_REPORT_FIFO -#undef RC_REPORT_OVERRUN - - -#define RISCOM_LEGAL_FLAGS \ - (ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \ - ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \ - ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP) - -static struct tty_driver *riscom_driver; - -static DEFINE_SPINLOCK(riscom_lock); - -static struct riscom_board rc_board[RC_NBOARD] = { - { - .base = RC_IOBASE1, - }, - { - .base = RC_IOBASE2, - }, - { - .base = RC_IOBASE3, - }, - { - .base = RC_IOBASE4, - }, -}; - -static struct riscom_port rc_port[RC_NBOARD * RC_NPORT]; - -/* RISCom/8 I/O ports addresses (without address translation) */ -static unsigned short rc_ioport[] = { -#if 1 - 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x09, 0x0a, 0x0b, 0x0c, -#else - 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x09, 0x0a, 0x0b, 0x0c, 0x10, - 0x11, 0x12, 0x18, 0x28, 0x31, 0x32, 0x39, 0x3a, 0x40, 0x41, 0x61, 0x62, - 0x63, 0x64, 0x6b, 0x70, 0x71, 0x78, 0x7a, 0x7b, 0x7f, 0x100, 0x101 -#endif -}; -#define RC_NIOPORT ARRAY_SIZE(rc_ioport) - - -static int rc_paranoia_check(struct riscom_port const *port, - char *name, const char *routine) -{ -#ifdef RISCOM_PARANOIA_CHECK - static const char badmagic[] = KERN_INFO - "rc: Warning: bad riscom port magic number for device %s in %s\n"; - static const char badinfo[] = KERN_INFO - "rc: Warning: null riscom port for device %s in %s\n"; - - if (!port) { - printk(badinfo, name, routine); - return 1; - } - if (port->magic != RISCOM8_MAGIC) { - printk(badmagic, name, routine); - return 1; - } -#endif - return 0; -} - -/* - * - * Service functions for RISCom/8 driver. - * - */ - -/* Get board number from pointer */ -static inline int board_No(struct riscom_board const *bp) -{ - return bp - rc_board; -} - -/* Get port number from pointer */ -static inline int port_No(struct riscom_port const *port) -{ - return RC_PORT(port - rc_port); -} - -/* Get pointer to board from pointer to port */ -static inline struct riscom_board *port_Board(struct riscom_port const *port) -{ - return &rc_board[RC_BOARD(port - rc_port)]; -} - -/* Input Byte from CL CD180 register */ -static inline unsigned char rc_in(struct riscom_board const *bp, - unsigned short reg) -{ - return inb(bp->base + RC_TO_ISA(reg)); -} - -/* Output Byte to CL CD180 register */ -static inline void rc_out(struct riscom_board const *bp, unsigned short reg, - unsigned char val) -{ - outb(val, bp->base + RC_TO_ISA(reg)); -} - -/* Wait for Channel Command Register ready */ -static void rc_wait_CCR(struct riscom_board const *bp) -{ - unsigned long delay; - - /* FIXME: need something more descriptive then 100000 :) */ - for (delay = 100000; delay; delay--) - if (!rc_in(bp, CD180_CCR)) - return; - - printk(KERN_INFO "rc%d: Timeout waiting for CCR.\n", board_No(bp)); -} - -/* - * RISCom/8 probe functions. - */ - -static int rc_request_io_range(struct riscom_board * const bp) -{ - int i; - - for (i = 0; i < RC_NIOPORT; i++) - if (!request_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1, - "RISCom/8")) { - goto out_release; - } - return 0; -out_release: - printk(KERN_INFO "rc%d: Skipping probe at 0x%03x. IO address in use.\n", - board_No(bp), bp->base); - while (--i >= 0) - release_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1); - return 1; -} - -static void rc_release_io_range(struct riscom_board * const bp) -{ - int i; - - for (i = 0; i < RC_NIOPORT; i++) - release_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1); -} - -/* Reset and setup CD180 chip */ -static void __init rc_init_CD180(struct riscom_board const *bp) -{ - unsigned long flags; - - spin_lock_irqsave(&riscom_lock, flags); - - rc_out(bp, RC_CTOUT, 0); /* Clear timeout */ - rc_wait_CCR(bp); /* Wait for CCR ready */ - rc_out(bp, CD180_CCR, CCR_HARDRESET); /* Reset CD180 chip */ - spin_unlock_irqrestore(&riscom_lock, flags); - msleep(50); /* Delay 0.05 sec */ - spin_lock_irqsave(&riscom_lock, flags); - rc_out(bp, CD180_GIVR, RC_ID); /* Set ID for this chip */ - rc_out(bp, CD180_GICR, 0); /* Clear all bits */ - rc_out(bp, CD180_PILR1, RC_ACK_MINT); /* Prio for modem intr */ - rc_out(bp, CD180_PILR2, RC_ACK_TINT); /* Prio for tx intr */ - rc_out(bp, CD180_PILR3, RC_ACK_RINT); /* Prio for rx intr */ - - /* Setting up prescaler. We need 4 ticks per 1 ms */ - rc_out(bp, CD180_PPRH, (RC_OSCFREQ/(1000000/RISCOM_TPS)) >> 8); - rc_out(bp, CD180_PPRL, (RC_OSCFREQ/(1000000/RISCOM_TPS)) & 0xff); - - spin_unlock_irqrestore(&riscom_lock, flags); -} - -/* Main probing routine, also sets irq. */ -static int __init rc_probe(struct riscom_board *bp) -{ - unsigned char val1, val2; - int irqs = 0; - int retries; - - bp->irq = 0; - - if (rc_request_io_range(bp)) - return 1; - - /* Are the I/O ports here ? */ - rc_out(bp, CD180_PPRL, 0x5a); - outb(0xff, 0x80); - val1 = rc_in(bp, CD180_PPRL); - rc_out(bp, CD180_PPRL, 0xa5); - outb(0x00, 0x80); - val2 = rc_in(bp, CD180_PPRL); - - if ((val1 != 0x5a) || (val2 != 0xa5)) { - printk(KERN_ERR "rc%d: RISCom/8 Board at 0x%03x not found.\n", - board_No(bp), bp->base); - goto out_release; - } - - /* It's time to find IRQ for this board */ - for (retries = 0; retries < 5 && irqs <= 0; retries++) { - irqs = probe_irq_on(); - rc_init_CD180(bp); /* Reset CD180 chip */ - rc_out(bp, CD180_CAR, 2); /* Select port 2 */ - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_TXEN); /* Enable transmitter */ - rc_out(bp, CD180_IER, IER_TXRDY);/* Enable tx empty intr */ - msleep(50); - irqs = probe_irq_off(irqs); - val1 = rc_in(bp, RC_BSR); /* Get Board Status reg */ - val2 = rc_in(bp, RC_ACK_TINT); /* ACK interrupt */ - rc_init_CD180(bp); /* Reset CD180 again */ - - if ((val1 & RC_BSR_TINT) || (val2 != (RC_ID | GIVR_IT_TX))) { - printk(KERN_ERR "rc%d: RISCom/8 Board at 0x%03x not " - "found.\n", board_No(bp), bp->base); - goto out_release; - } - } - - if (irqs <= 0) { - printk(KERN_ERR "rc%d: Can't find IRQ for RISCom/8 board " - "at 0x%03x.\n", board_No(bp), bp->base); - goto out_release; - } - bp->irq = irqs; - bp->flags |= RC_BOARD_PRESENT; - - printk(KERN_INFO "rc%d: RISCom/8 Rev. %c board detected at " - "0x%03x, IRQ %d.\n", - board_No(bp), - (rc_in(bp, CD180_GFRCR) & 0x0f) + 'A', /* Board revision */ - bp->base, bp->irq); - - return 0; -out_release: - rc_release_io_range(bp); - return 1; -} - -/* - * - * Interrupt processing routines. - * - */ - -static struct riscom_port *rc_get_port(struct riscom_board const *bp, - unsigned char const *what) -{ - unsigned char channel; - struct riscom_port *port; - - channel = rc_in(bp, CD180_GICR) >> GICR_CHAN_OFF; - if (channel < CD180_NCH) { - port = &rc_port[board_No(bp) * RC_NPORT + channel]; - if (port->port.flags & ASYNC_INITIALIZED) - return port; - } - printk(KERN_ERR "rc%d: %s interrupt from invalid port %d\n", - board_No(bp), what, channel); - return NULL; -} - -static void rc_receive_exc(struct riscom_board const *bp) -{ - struct riscom_port *port; - struct tty_struct *tty; - unsigned char status; - unsigned char ch, flag; - - port = rc_get_port(bp, "Receive"); - if (port == NULL) - return; - - tty = tty_port_tty_get(&port->port); - -#ifdef RC_REPORT_OVERRUN - status = rc_in(bp, CD180_RCSR); - if (status & RCSR_OE) - port->overrun++; - status &= port->mark_mask; -#else - status = rc_in(bp, CD180_RCSR) & port->mark_mask; -#endif - ch = rc_in(bp, CD180_RDR); - if (!status) - goto out; - if (status & RCSR_TOUT) { - printk(KERN_WARNING "rc%d: port %d: Receiver timeout. " - "Hardware problems ?\n", - board_No(bp), port_No(port)); - goto out; - - } else if (status & RCSR_BREAK) { - printk(KERN_INFO "rc%d: port %d: Handling break...\n", - board_No(bp), port_No(port)); - flag = TTY_BREAK; - if (tty && (port->port.flags & ASYNC_SAK)) - do_SAK(tty); - - } else if (status & RCSR_PE) - flag = TTY_PARITY; - - else if (status & RCSR_FE) - flag = TTY_FRAME; - - else if (status & RCSR_OE) - flag = TTY_OVERRUN; - else - flag = TTY_NORMAL; - - if (tty) { - tty_insert_flip_char(tty, ch, flag); - tty_flip_buffer_push(tty); - } -out: - tty_kref_put(tty); -} - -static void rc_receive(struct riscom_board const *bp) -{ - struct riscom_port *port; - struct tty_struct *tty; - unsigned char count; - - port = rc_get_port(bp, "Receive"); - if (port == NULL) - return; - - tty = tty_port_tty_get(&port->port); - - count = rc_in(bp, CD180_RDCR); - -#ifdef RC_REPORT_FIFO - port->hits[count > 8 ? 9 : count]++; -#endif - - while (count--) { - u8 ch = rc_in(bp, CD180_RDR); - if (tty) - tty_insert_flip_char(tty, ch, TTY_NORMAL); - } - if (tty) { - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } -} - -static void rc_transmit(struct riscom_board const *bp) -{ - struct riscom_port *port; - struct tty_struct *tty; - unsigned char count; - - port = rc_get_port(bp, "Transmit"); - if (port == NULL) - return; - - tty = tty_port_tty_get(&port->port); - - if (port->IER & IER_TXEMPTY) { - /* FIFO drained */ - rc_out(bp, CD180_CAR, port_No(port)); - port->IER &= ~IER_TXEMPTY; - rc_out(bp, CD180_IER, port->IER); - goto out; - } - - if ((port->xmit_cnt <= 0 && !port->break_length) - || (tty && (tty->stopped || tty->hw_stopped))) { - rc_out(bp, CD180_CAR, port_No(port)); - port->IER &= ~IER_TXRDY; - rc_out(bp, CD180_IER, port->IER); - goto out; - } - - if (port->break_length) { - if (port->break_length > 0) { - if (port->COR2 & COR2_ETC) { - rc_out(bp, CD180_TDR, CD180_C_ESC); - rc_out(bp, CD180_TDR, CD180_C_SBRK); - port->COR2 &= ~COR2_ETC; - } - count = min_t(int, port->break_length, 0xff); - rc_out(bp, CD180_TDR, CD180_C_ESC); - rc_out(bp, CD180_TDR, CD180_C_DELAY); - rc_out(bp, CD180_TDR, count); - port->break_length -= count; - if (port->break_length == 0) - port->break_length--; - } else { - rc_out(bp, CD180_TDR, CD180_C_ESC); - rc_out(bp, CD180_TDR, CD180_C_EBRK); - rc_out(bp, CD180_COR2, port->COR2); - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_CORCHG2); - port->break_length = 0; - } - goto out; - } - - count = CD180_NFIFO; - do { - rc_out(bp, CD180_TDR, port->port.xmit_buf[port->xmit_tail++]); - port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1); - if (--port->xmit_cnt <= 0) - break; - } while (--count > 0); - - if (port->xmit_cnt <= 0) { - rc_out(bp, CD180_CAR, port_No(port)); - port->IER &= ~IER_TXRDY; - rc_out(bp, CD180_IER, port->IER); - } - if (tty && port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); -out: - tty_kref_put(tty); -} - -static void rc_check_modem(struct riscom_board const *bp) -{ - struct riscom_port *port; - struct tty_struct *tty; - unsigned char mcr; - - port = rc_get_port(bp, "Modem"); - if (port == NULL) - return; - - tty = tty_port_tty_get(&port->port); - - mcr = rc_in(bp, CD180_MCR); - if (mcr & MCR_CDCHG) { - if (rc_in(bp, CD180_MSVR) & MSVR_CD) - wake_up_interruptible(&port->port.open_wait); - else if (tty) - tty_hangup(tty); - } - -#ifdef RISCOM_BRAIN_DAMAGED_CTS - if (mcr & MCR_CTSCHG) { - if (rc_in(bp, CD180_MSVR) & MSVR_CTS) { - port->IER |= IER_TXRDY; - if (tty) { - tty->hw_stopped = 0; - if (port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); - } - } else { - if (tty) - tty->hw_stopped = 1; - port->IER &= ~IER_TXRDY; - } - rc_out(bp, CD180_IER, port->IER); - } - if (mcr & MCR_DSRCHG) { - if (rc_in(bp, CD180_MSVR) & MSVR_DSR) { - port->IER |= IER_TXRDY; - if (tty) { - tty->hw_stopped = 0; - if (port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); - } - } else { - if (tty) - tty->hw_stopped = 1; - port->IER &= ~IER_TXRDY; - } - rc_out(bp, CD180_IER, port->IER); - } -#endif /* RISCOM_BRAIN_DAMAGED_CTS */ - - /* Clear change bits */ - rc_out(bp, CD180_MCR, 0); - tty_kref_put(tty); -} - -/* The main interrupt processing routine */ -static irqreturn_t rc_interrupt(int dummy, void *dev_id) -{ - unsigned char status; - unsigned char ack; - struct riscom_board *bp = dev_id; - unsigned long loop = 0; - int handled = 0; - - if (!(bp->flags & RC_BOARD_ACTIVE)) - return IRQ_NONE; - - while ((++loop < 16) && ((status = ~(rc_in(bp, RC_BSR))) & - (RC_BSR_TOUT | RC_BSR_TINT | - RC_BSR_MINT | RC_BSR_RINT))) { - handled = 1; - if (status & RC_BSR_TOUT) - printk(KERN_WARNING "rc%d: Got timeout. Hardware " - "error?\n", board_No(bp)); - else if (status & RC_BSR_RINT) { - ack = rc_in(bp, RC_ACK_RINT); - if (ack == (RC_ID | GIVR_IT_RCV)) - rc_receive(bp); - else if (ack == (RC_ID | GIVR_IT_REXC)) - rc_receive_exc(bp); - else - printk(KERN_WARNING "rc%d: Bad receive ack " - "0x%02x.\n", - board_No(bp), ack); - } else if (status & RC_BSR_TINT) { - ack = rc_in(bp, RC_ACK_TINT); - if (ack == (RC_ID | GIVR_IT_TX)) - rc_transmit(bp); - else - printk(KERN_WARNING "rc%d: Bad transmit ack " - "0x%02x.\n", - board_No(bp), ack); - } else /* if (status & RC_BSR_MINT) */ { - ack = rc_in(bp, RC_ACK_MINT); - if (ack == (RC_ID | GIVR_IT_MODEM)) - rc_check_modem(bp); - else - printk(KERN_WARNING "rc%d: Bad modem ack " - "0x%02x.\n", - board_No(bp), ack); - } - rc_out(bp, CD180_EOIR, 0); /* Mark end of interrupt */ - rc_out(bp, RC_CTOUT, 0); /* Clear timeout flag */ - } - return IRQ_RETVAL(handled); -} - -/* - * Routines for open & close processing. - */ - -/* Called with disabled interrupts */ -static int rc_setup_board(struct riscom_board *bp) -{ - int error; - - if (bp->flags & RC_BOARD_ACTIVE) - return 0; - - error = request_irq(bp->irq, rc_interrupt, IRQF_DISABLED, - "RISCom/8", bp); - if (error) - return error; - - rc_out(bp, RC_CTOUT, 0); /* Just in case */ - bp->DTR = ~0; - rc_out(bp, RC_DTR, bp->DTR); /* Drop DTR on all ports */ - - bp->flags |= RC_BOARD_ACTIVE; - - return 0; -} - -/* Called with disabled interrupts */ -static void rc_shutdown_board(struct riscom_board *bp) -{ - if (!(bp->flags & RC_BOARD_ACTIVE)) - return; - - bp->flags &= ~RC_BOARD_ACTIVE; - - free_irq(bp->irq, NULL); - - bp->DTR = ~0; - rc_out(bp, RC_DTR, bp->DTR); /* Drop DTR on all ports */ - -} - -/* - * Setting up port characteristics. - * Must be called with disabled interrupts - */ -static void rc_change_speed(struct tty_struct *tty, struct riscom_board *bp, - struct riscom_port *port) -{ - unsigned long baud; - long tmp; - unsigned char cor1 = 0, cor3 = 0; - unsigned char mcor1 = 0, mcor2 = 0; - - port->IER = 0; - port->COR2 = 0; - port->MSVR = MSVR_RTS; - - baud = tty_get_baud_rate(tty); - - /* Select port on the board */ - rc_out(bp, CD180_CAR, port_No(port)); - - if (!baud) { - /* Drop DTR & exit */ - bp->DTR |= (1u << port_No(port)); - rc_out(bp, RC_DTR, bp->DTR); - return; - } else { - /* Set DTR on */ - bp->DTR &= ~(1u << port_No(port)); - rc_out(bp, RC_DTR, bp->DTR); - } - - /* - * Now we must calculate some speed depended things - */ - - /* Set baud rate for port */ - tmp = (((RC_OSCFREQ + baud/2) / baud + - CD180_TPC/2) / CD180_TPC); - - rc_out(bp, CD180_RBPRH, (tmp >> 8) & 0xff); - rc_out(bp, CD180_TBPRH, (tmp >> 8) & 0xff); - rc_out(bp, CD180_RBPRL, tmp & 0xff); - rc_out(bp, CD180_TBPRL, tmp & 0xff); - - baud = (baud + 5) / 10; /* Estimated CPS */ - - /* Two timer ticks seems enough to wakeup something like SLIP driver */ - tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO; - port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ? - SERIAL_XMIT_SIZE - 1 : tmp); - - /* Receiver timeout will be transmission time for 1.5 chars */ - tmp = (RISCOM_TPS + RISCOM_TPS/2 + baud/2) / baud; - tmp = (tmp > 0xff) ? 0xff : tmp; - rc_out(bp, CD180_RTPR, tmp); - - switch (C_CSIZE(tty)) { - case CS5: - cor1 |= COR1_5BITS; - break; - case CS6: - cor1 |= COR1_6BITS; - break; - case CS7: - cor1 |= COR1_7BITS; - break; - case CS8: - cor1 |= COR1_8BITS; - break; - } - if (C_CSTOPB(tty)) - cor1 |= COR1_2SB; - - cor1 |= COR1_IGNORE; - if (C_PARENB(tty)) { - cor1 |= COR1_NORMPAR; - if (C_PARODD(tty)) - cor1 |= COR1_ODDP; - if (I_INPCK(tty)) - cor1 &= ~COR1_IGNORE; - } - /* Set marking of some errors */ - port->mark_mask = RCSR_OE | RCSR_TOUT; - if (I_INPCK(tty)) - port->mark_mask |= RCSR_FE | RCSR_PE; - if (I_BRKINT(tty) || I_PARMRK(tty)) - port->mark_mask |= RCSR_BREAK; - if (I_IGNPAR(tty)) - port->mark_mask &= ~(RCSR_FE | RCSR_PE); - if (I_IGNBRK(tty)) { - port->mark_mask &= ~RCSR_BREAK; - if (I_IGNPAR(tty)) - /* Real raw mode. Ignore all */ - port->mark_mask &= ~RCSR_OE; - } - /* Enable Hardware Flow Control */ - if (C_CRTSCTS(tty)) { -#ifdef RISCOM_BRAIN_DAMAGED_CTS - port->IER |= IER_DSR | IER_CTS; - mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD; - mcor2 |= MCOR2_DSROD | MCOR2_CTSOD; - tty->hw_stopped = !(rc_in(bp, CD180_MSVR) & - (MSVR_CTS|MSVR_DSR)); -#else - port->COR2 |= COR2_CTSAE; -#endif - } - /* Enable Software Flow Control. FIXME: I'm not sure about this */ - /* Some people reported that it works, but I still doubt */ - if (I_IXON(tty)) { - port->COR2 |= COR2_TXIBE; - cor3 |= (COR3_FCT | COR3_SCDE); - if (I_IXANY(tty)) - port->COR2 |= COR2_IXM; - rc_out(bp, CD180_SCHR1, START_CHAR(tty)); - rc_out(bp, CD180_SCHR2, STOP_CHAR(tty)); - rc_out(bp, CD180_SCHR3, START_CHAR(tty)); - rc_out(bp, CD180_SCHR4, STOP_CHAR(tty)); - } - if (!C_CLOCAL(tty)) { - /* Enable CD check */ - port->IER |= IER_CD; - mcor1 |= MCOR1_CDZD; - mcor2 |= MCOR2_CDOD; - } - - if (C_CREAD(tty)) - /* Enable receiver */ - port->IER |= IER_RXD; - - /* Set input FIFO size (1-8 bytes) */ - cor3 |= RISCOM_RXFIFO; - /* Setting up CD180 channel registers */ - rc_out(bp, CD180_COR1, cor1); - rc_out(bp, CD180_COR2, port->COR2); - rc_out(bp, CD180_COR3, cor3); - /* Make CD180 know about registers change */ - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); - /* Setting up modem option registers */ - rc_out(bp, CD180_MCOR1, mcor1); - rc_out(bp, CD180_MCOR2, mcor2); - /* Enable CD180 transmitter & receiver */ - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_TXEN | CCR_RXEN); - /* Enable interrupts */ - rc_out(bp, CD180_IER, port->IER); - /* And finally set RTS on */ - rc_out(bp, CD180_MSVR, port->MSVR); -} - -/* Must be called with interrupts enabled */ -static int rc_activate_port(struct tty_port *port, struct tty_struct *tty) -{ - struct riscom_port *rp = container_of(port, struct riscom_port, port); - struct riscom_board *bp = port_Board(rp); - unsigned long flags; - - if (tty_port_alloc_xmit_buf(port) < 0) - return -ENOMEM; - - spin_lock_irqsave(&riscom_lock, flags); - - clear_bit(TTY_IO_ERROR, &tty->flags); - bp->count++; - rp->xmit_cnt = rp->xmit_head = rp->xmit_tail = 0; - rc_change_speed(tty, bp, rp); - spin_unlock_irqrestore(&riscom_lock, flags); - return 0; -} - -/* Must be called with interrupts disabled */ -static void rc_shutdown_port(struct tty_struct *tty, - struct riscom_board *bp, struct riscom_port *port) -{ -#ifdef RC_REPORT_OVERRUN - printk(KERN_INFO "rc%d: port %d: Total %ld overruns were detected.\n", - board_No(bp), port_No(port), port->overrun); -#endif -#ifdef RC_REPORT_FIFO - { - int i; - - printk(KERN_INFO "rc%d: port %d: FIFO hits [ ", - board_No(bp), port_No(port)); - for (i = 0; i < 10; i++) - printk("%ld ", port->hits[i]); - printk("].\n"); - } -#endif - tty_port_free_xmit_buf(&port->port); - - /* Select port */ - rc_out(bp, CD180_CAR, port_No(port)); - /* Reset port */ - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_SOFTRESET); - /* Disable all interrupts from this port */ - port->IER = 0; - rc_out(bp, CD180_IER, port->IER); - - set_bit(TTY_IO_ERROR, &tty->flags); - - if (--bp->count < 0) { - printk(KERN_INFO "rc%d: rc_shutdown_port: " - "bad board count: %d\n", - board_No(bp), bp->count); - bp->count = 0; - } - /* - * If this is the last opened port on the board - * shutdown whole board - */ - if (!bp->count) - rc_shutdown_board(bp); -} - -static int carrier_raised(struct tty_port *port) -{ - struct riscom_port *p = container_of(port, struct riscom_port, port); - struct riscom_board *bp = port_Board(p); - unsigned long flags; - int CD; - - spin_lock_irqsave(&riscom_lock, flags); - rc_out(bp, CD180_CAR, port_No(p)); - CD = rc_in(bp, CD180_MSVR) & MSVR_CD; - rc_out(bp, CD180_MSVR, MSVR_RTS); - bp->DTR &= ~(1u << port_No(p)); - rc_out(bp, RC_DTR, bp->DTR); - spin_unlock_irqrestore(&riscom_lock, flags); - return CD; -} - -static void dtr_rts(struct tty_port *port, int onoff) -{ - struct riscom_port *p = container_of(port, struct riscom_port, port); - struct riscom_board *bp = port_Board(p); - unsigned long flags; - - spin_lock_irqsave(&riscom_lock, flags); - bp->DTR &= ~(1u << port_No(p)); - if (onoff == 0) - bp->DTR |= (1u << port_No(p)); - rc_out(bp, RC_DTR, bp->DTR); - spin_unlock_irqrestore(&riscom_lock, flags); -} - -static int rc_open(struct tty_struct *tty, struct file *filp) -{ - int board; - int error; - struct riscom_port *port; - struct riscom_board *bp; - - board = RC_BOARD(tty->index); - if (board >= RC_NBOARD || !(rc_board[board].flags & RC_BOARD_PRESENT)) - return -ENODEV; - - bp = &rc_board[board]; - port = rc_port + board * RC_NPORT + RC_PORT(tty->index); - if (rc_paranoia_check(port, tty->name, "rc_open")) - return -ENODEV; - - error = rc_setup_board(bp); - if (error) - return error; - - tty->driver_data = port; - return tty_port_open(&port->port, tty, filp); -} - -static void rc_flush_buffer(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_flush_buffer")) - return; - - spin_lock_irqsave(&riscom_lock, flags); - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore(&riscom_lock, flags); - - tty_wakeup(tty); -} - -static void rc_close_port(struct tty_port *port) -{ - unsigned long flags; - struct riscom_port *rp = container_of(port, struct riscom_port, port); - struct riscom_board *bp = port_Board(rp); - unsigned long timeout; - - /* - * At this point we stop accepting input. To do this, we - * disable the receive line status interrupts, and tell the - * interrupt driver to stop checking the data ready bit in the - * line status register. - */ - - spin_lock_irqsave(&riscom_lock, flags); - rp->IER &= ~IER_RXD; - - rp->IER &= ~IER_TXRDY; - rp->IER |= IER_TXEMPTY; - rc_out(bp, CD180_CAR, port_No(rp)); - rc_out(bp, CD180_IER, rp->IER); - /* - * Before we drop DTR, make sure the UART transmitter - * has completely drained; this is especially - * important if there is a transmit FIFO! - */ - timeout = jiffies + HZ; - while (rp->IER & IER_TXEMPTY) { - spin_unlock_irqrestore(&riscom_lock, flags); - msleep_interruptible(jiffies_to_msecs(rp->timeout)); - spin_lock_irqsave(&riscom_lock, flags); - if (time_after(jiffies, timeout)) - break; - } - rc_shutdown_port(port->tty, bp, rp); - spin_unlock_irqrestore(&riscom_lock, flags); -} - -static void rc_close(struct tty_struct *tty, struct file *filp) -{ - struct riscom_port *port = tty->driver_data; - - if (!port || rc_paranoia_check(port, tty->name, "close")) - return; - tty_port_close(&port->port, tty, filp); -} - -static int rc_write(struct tty_struct *tty, - const unsigned char *buf, int count) -{ - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; - int c, total = 0; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_write")) - return 0; - - bp = port_Board(port); - - while (1) { - spin_lock_irqsave(&riscom_lock, flags); - - c = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, - SERIAL_XMIT_SIZE - port->xmit_head)); - if (c <= 0) - break; /* lock continues to be held */ - - memcpy(port->port.xmit_buf + port->xmit_head, buf, c); - port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1); - port->xmit_cnt += c; - - spin_unlock_irqrestore(&riscom_lock, flags); - - buf += c; - count -= c; - total += c; - } - - if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped && - !(port->IER & IER_TXRDY)) { - port->IER |= IER_TXRDY; - rc_out(bp, CD180_CAR, port_No(port)); - rc_out(bp, CD180_IER, port->IER); - } - - spin_unlock_irqrestore(&riscom_lock, flags); - - return total; -} - -static int rc_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct riscom_port *port = tty->driver_data; - unsigned long flags; - int ret = 0; - - if (rc_paranoia_check(port, tty->name, "rc_put_char")) - return 0; - - spin_lock_irqsave(&riscom_lock, flags); - - if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) - goto out; - - port->port.xmit_buf[port->xmit_head++] = ch; - port->xmit_head &= SERIAL_XMIT_SIZE - 1; - port->xmit_cnt++; - ret = 1; - -out: - spin_unlock_irqrestore(&riscom_lock, flags); - return ret; -} - -static void rc_flush_chars(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_flush_chars")) - return; - - if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped) - return; - - spin_lock_irqsave(&riscom_lock, flags); - - port->IER |= IER_TXRDY; - rc_out(port_Board(port), CD180_CAR, port_No(port)); - rc_out(port_Board(port), CD180_IER, port->IER); - - spin_unlock_irqrestore(&riscom_lock, flags); -} - -static int rc_write_room(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - int ret; - - if (rc_paranoia_check(port, tty->name, "rc_write_room")) - return 0; - - ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; - if (ret < 0) - ret = 0; - return ret; -} - -static int rc_chars_in_buffer(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - - if (rc_paranoia_check(port, tty->name, "rc_chars_in_buffer")) - return 0; - - return port->xmit_cnt; -} - -static int rc_tiocmget(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; - unsigned char status; - unsigned int result; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, __func__)) - return -ENODEV; - - bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); - - rc_out(bp, CD180_CAR, port_No(port)); - status = rc_in(bp, CD180_MSVR); - result = rc_in(bp, RC_RI) & (1u << port_No(port)) ? 0 : TIOCM_RNG; - - spin_unlock_irqrestore(&riscom_lock, flags); - - result |= ((status & MSVR_RTS) ? TIOCM_RTS : 0) - | ((status & MSVR_DTR) ? TIOCM_DTR : 0) - | ((status & MSVR_CD) ? TIOCM_CAR : 0) - | ((status & MSVR_DSR) ? TIOCM_DSR : 0) - | ((status & MSVR_CTS) ? TIOCM_CTS : 0); - return result; -} - -static int rc_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct riscom_port *port = tty->driver_data; - unsigned long flags; - struct riscom_board *bp; - - if (rc_paranoia_check(port, tty->name, __func__)) - return -ENODEV; - - bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); - - if (set & TIOCM_RTS) - port->MSVR |= MSVR_RTS; - if (set & TIOCM_DTR) - bp->DTR &= ~(1u << port_No(port)); - - if (clear & TIOCM_RTS) - port->MSVR &= ~MSVR_RTS; - if (clear & TIOCM_DTR) - bp->DTR |= (1u << port_No(port)); - - rc_out(bp, CD180_CAR, port_No(port)); - rc_out(bp, CD180_MSVR, port->MSVR); - rc_out(bp, RC_DTR, bp->DTR); - - spin_unlock_irqrestore(&riscom_lock, flags); - - return 0; -} - -static int rc_send_break(struct tty_struct *tty, int length) -{ - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp = port_Board(port); - unsigned long flags; - - if (length == 0 || length == -1) - return -EOPNOTSUPP; - - spin_lock_irqsave(&riscom_lock, flags); - - port->break_length = RISCOM_TPS / HZ * length; - port->COR2 |= COR2_ETC; - port->IER |= IER_TXRDY; - rc_out(bp, CD180_CAR, port_No(port)); - rc_out(bp, CD180_COR2, port->COR2); - rc_out(bp, CD180_IER, port->IER); - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_CORCHG2); - rc_wait_CCR(bp); - - spin_unlock_irqrestore(&riscom_lock, flags); - return 0; -} - -static int rc_set_serial_info(struct tty_struct *tty, struct riscom_port *port, - struct serial_struct __user *newinfo) -{ - struct serial_struct tmp; - struct riscom_board *bp = port_Board(port); - int change_speed; - - if (copy_from_user(&tmp, newinfo, sizeof(tmp))) - return -EFAULT; - - mutex_lock(&port->port.mutex); - change_speed = ((port->port.flags & ASYNC_SPD_MASK) != - (tmp.flags & ASYNC_SPD_MASK)); - - if (!capable(CAP_SYS_ADMIN)) { - if ((tmp.close_delay != port->port.close_delay) || - (tmp.closing_wait != port->port.closing_wait) || - ((tmp.flags & ~ASYNC_USR_MASK) != - (port->port.flags & ~ASYNC_USR_MASK))) { - mutex_unlock(&port->port.mutex); - return -EPERM; - } - port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | - (tmp.flags & ASYNC_USR_MASK)); - } else { - port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | - (tmp.flags & ASYNC_FLAGS)); - port->port.close_delay = tmp.close_delay; - port->port.closing_wait = tmp.closing_wait; - } - if (change_speed) { - unsigned long flags; - - spin_lock_irqsave(&riscom_lock, flags); - rc_change_speed(tty, bp, port); - spin_unlock_irqrestore(&riscom_lock, flags); - } - mutex_unlock(&port->port.mutex); - return 0; -} - -static int rc_get_serial_info(struct riscom_port *port, - struct serial_struct __user *retinfo) -{ - struct serial_struct tmp; - struct riscom_board *bp = port_Board(port); - - memset(&tmp, 0, sizeof(tmp)); - tmp.type = PORT_CIRRUS; - tmp.line = port - rc_port; - - mutex_lock(&port->port.mutex); - tmp.port = bp->base; - tmp.irq = bp->irq; - tmp.flags = port->port.flags; - tmp.baud_base = (RC_OSCFREQ + CD180_TPC/2) / CD180_TPC; - tmp.close_delay = port->port.close_delay * HZ/100; - tmp.closing_wait = port->port.closing_wait * HZ/100; - mutex_unlock(&port->port.mutex); - tmp.xmit_fifo_size = CD180_NFIFO; - return copy_to_user(retinfo, &tmp, sizeof(tmp)) ? -EFAULT : 0; -} - -static int rc_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct riscom_port *port = tty->driver_data; - void __user *argp = (void __user *)arg; - int retval; - - if (rc_paranoia_check(port, tty->name, "rc_ioctl")) - return -ENODEV; - - switch (cmd) { - case TIOCGSERIAL: - retval = rc_get_serial_info(port, argp); - break; - case TIOCSSERIAL: - retval = rc_set_serial_info(tty, port, argp); - break; - default: - retval = -ENOIOCTLCMD; - } - return retval; -} - -static void rc_throttle(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_throttle")) - return; - bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); - port->MSVR &= ~MSVR_RTS; - rc_out(bp, CD180_CAR, port_No(port)); - if (I_IXOFF(tty)) { - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_SSCH2); - rc_wait_CCR(bp); - } - rc_out(bp, CD180_MSVR, port->MSVR); - spin_unlock_irqrestore(&riscom_lock, flags); -} - -static void rc_unthrottle(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_unthrottle")) - return; - bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); - port->MSVR |= MSVR_RTS; - rc_out(bp, CD180_CAR, port_No(port)); - if (I_IXOFF(tty)) { - rc_wait_CCR(bp); - rc_out(bp, CD180_CCR, CCR_SSCH1); - rc_wait_CCR(bp); - } - rc_out(bp, CD180_MSVR, port->MSVR); - spin_unlock_irqrestore(&riscom_lock, flags); -} - -static void rc_stop(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_stop")) - return; - - bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); - port->IER &= ~IER_TXRDY; - rc_out(bp, CD180_CAR, port_No(port)); - rc_out(bp, CD180_IER, port->IER); - spin_unlock_irqrestore(&riscom_lock, flags); -} - -static void rc_start(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - struct riscom_board *bp; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_start")) - return; - - bp = port_Board(port); - - spin_lock_irqsave(&riscom_lock, flags); - - if (port->xmit_cnt && port->port.xmit_buf && !(port->IER & IER_TXRDY)) { - port->IER |= IER_TXRDY; - rc_out(bp, CD180_CAR, port_No(port)); - rc_out(bp, CD180_IER, port->IER); - } - spin_unlock_irqrestore(&riscom_lock, flags); -} - -static void rc_hangup(struct tty_struct *tty) -{ - struct riscom_port *port = tty->driver_data; - - if (rc_paranoia_check(port, tty->name, "rc_hangup")) - return; - - tty_port_hangup(&port->port); -} - -static void rc_set_termios(struct tty_struct *tty, - struct ktermios *old_termios) -{ - struct riscom_port *port = tty->driver_data; - unsigned long flags; - - if (rc_paranoia_check(port, tty->name, "rc_set_termios")) - return; - - spin_lock_irqsave(&riscom_lock, flags); - rc_change_speed(tty, port_Board(port), port); - spin_unlock_irqrestore(&riscom_lock, flags); - - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - rc_start(tty); - } -} - -static const struct tty_operations riscom_ops = { - .open = rc_open, - .close = rc_close, - .write = rc_write, - .put_char = rc_put_char, - .flush_chars = rc_flush_chars, - .write_room = rc_write_room, - .chars_in_buffer = rc_chars_in_buffer, - .flush_buffer = rc_flush_buffer, - .ioctl = rc_ioctl, - .throttle = rc_throttle, - .unthrottle = rc_unthrottle, - .set_termios = rc_set_termios, - .stop = rc_stop, - .start = rc_start, - .hangup = rc_hangup, - .tiocmget = rc_tiocmget, - .tiocmset = rc_tiocmset, - .break_ctl = rc_send_break, -}; - -static const struct tty_port_operations riscom_port_ops = { - .carrier_raised = carrier_raised, - .dtr_rts = dtr_rts, - .shutdown = rc_close_port, - .activate = rc_activate_port, -}; - - -static int __init rc_init_drivers(void) -{ - int error; - int i; - - riscom_driver = alloc_tty_driver(RC_NBOARD * RC_NPORT); - if (!riscom_driver) - return -ENOMEM; - - riscom_driver->owner = THIS_MODULE; - riscom_driver->name = "ttyL"; - riscom_driver->major = RISCOM8_NORMAL_MAJOR; - riscom_driver->type = TTY_DRIVER_TYPE_SERIAL; - riscom_driver->subtype = SERIAL_TYPE_NORMAL; - riscom_driver->init_termios = tty_std_termios; - riscom_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - riscom_driver->init_termios.c_ispeed = 9600; - riscom_driver->init_termios.c_ospeed = 9600; - riscom_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; - tty_set_operations(riscom_driver, &riscom_ops); - error = tty_register_driver(riscom_driver); - if (error != 0) { - put_tty_driver(riscom_driver); - printk(KERN_ERR "rc: Couldn't register RISCom/8 driver, " - "error = %d\n", error); - return 1; - } - memset(rc_port, 0, sizeof(rc_port)); - for (i = 0; i < RC_NPORT * RC_NBOARD; i++) { - tty_port_init(&rc_port[i].port); - rc_port[i].port.ops = &riscom_port_ops; - rc_port[i].magic = RISCOM8_MAGIC; - } - return 0; -} - -static void rc_release_drivers(void) -{ - tty_unregister_driver(riscom_driver); - put_tty_driver(riscom_driver); -} - -#ifndef MODULE -/* - * Called at boot time. - * - * You can specify IO base for up to RC_NBOARD cards, - * using line "riscom8=0xiobase1,0xiobase2,.." at LILO prompt. - * Note that there will be no probing at default - * addresses in this case. - * - */ -static int __init riscom8_setup(char *str) -{ - int ints[RC_NBOARD]; - int i; - - str = get_options(str, ARRAY_SIZE(ints), ints); - - for (i = 0; i < RC_NBOARD; i++) { - if (i < ints[0]) - rc_board[i].base = ints[i+1]; - else - rc_board[i].base = 0; - } - return 1; -} - -__setup("riscom8=", riscom8_setup); -#endif - -static char banner[] __initdata = - KERN_INFO "rc: SDL RISCom/8 card driver v1.1, (c) D.Gorodchanin " - "1994-1996.\n"; -static char no_boards_msg[] __initdata = - KERN_INFO "rc: No RISCom/8 boards detected.\n"; - -/* - * This routine must be called by kernel at boot time - */ -static int __init riscom8_init(void) -{ - int i; - int found = 0; - - printk(banner); - - if (rc_init_drivers()) - return -EIO; - - for (i = 0; i < RC_NBOARD; i++) - if (rc_board[i].base && !rc_probe(&rc_board[i])) - found++; - if (!found) { - rc_release_drivers(); - printk(no_boards_msg); - return -EIO; - } - return 0; -} - -#ifdef MODULE -static int iobase; -static int iobase1; -static int iobase2; -static int iobase3; -module_param(iobase, int, 0); -module_param(iobase1, int, 0); -module_param(iobase2, int, 0); -module_param(iobase3, int, 0); - -MODULE_LICENSE("GPL"); -MODULE_ALIAS_CHARDEV_MAJOR(RISCOM8_NORMAL_MAJOR); -#endif /* MODULE */ - -/* - * You can setup up to 4 boards (current value of RC_NBOARD) - * by specifying "iobase=0xXXX iobase1=0xXXX ..." as insmod parameter. - * - */ -static int __init riscom8_init_module(void) -{ -#ifdef MODULE - int i; - - if (iobase || iobase1 || iobase2 || iobase3) { - for (i = 0; i < RC_NBOARD; i++) - rc_board[i].base = 0; - } - - if (iobase) - rc_board[0].base = iobase; - if (iobase1) - rc_board[1].base = iobase1; - if (iobase2) - rc_board[2].base = iobase2; - if (iobase3) - rc_board[3].base = iobase3; -#endif /* MODULE */ - - return riscom8_init(); -} - -static void __exit riscom8_exit_module(void) -{ - int i; - - rc_release_drivers(); - for (i = 0; i < RC_NBOARD; i++) - if (rc_board[i].flags & RC_BOARD_PRESENT) - rc_release_io_range(&rc_board[i]); - -} - -module_init(riscom8_init_module); -module_exit(riscom8_exit_module); diff --git a/drivers/char/riscom8.h b/drivers/char/riscom8.h deleted file mode 100644 index c9876b3f9714..000000000000 --- a/drivers/char/riscom8.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * linux/drivers/char/riscom8.h -- RISCom/8 multiport serial driver. - * - * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) - * - * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. The RISCom/8 card - * programming info was obtained from various drivers for other OSes - * (FreeBSD, ISC, etc), but no source code from those drivers were - * directly included in this driver. - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#ifndef __LINUX_RISCOM8_H -#define __LINUX_RISCOM8_H - -#include - -#ifdef __KERNEL__ - -#define RC_NBOARD 4 -/* NOTE: RISCom decoder recognizes 16 addresses... */ -#define RC_NPORT 8 -#define RC_BOARD(line) (((line) >> 3) & 0x07) -#define RC_PORT(line) ((line) & (RC_NPORT - 1)) - -/* Ticks per sec. Used for setting receiver timeout and break length */ -#define RISCOM_TPS 4000 - -/* Yeah, after heavy testing I decided it must be 6. - * Sure, You can change it if needed. - */ -#define RISCOM_RXFIFO 6 /* Max. receiver FIFO size (1-8) */ - -#define RISCOM8_MAGIC 0x0907 - -#define RC_IOBASE1 0x220 -#define RC_IOBASE2 0x240 -#define RC_IOBASE3 0x250 -#define RC_IOBASE4 0x260 - -struct riscom_board { - unsigned long flags; - unsigned short base; - unsigned char irq; - signed char count; - unsigned char DTR; -}; - -#define RC_BOARD_PRESENT 0x00000001 -#define RC_BOARD_ACTIVE 0x00000002 - -struct riscom_port { - int magic; - struct tty_port port; - int baud_base; - int timeout; - int custom_divisor; - int xmit_head; - int xmit_tail; - int xmit_cnt; - short wakeup_chars; - short break_length; - unsigned char mark_mask; - unsigned char IER; - unsigned char MSVR; - unsigned char COR2; -#ifdef RC_REPORT_OVERRUN - unsigned long overrun; -#endif -#ifdef RC_REPORT_FIFO - unsigned long hits[10]; -#endif -}; - -#endif /* __KERNEL__ */ -#endif /* __LINUX_RISCOM8_H */ diff --git a/drivers/char/riscom8_reg.h b/drivers/char/riscom8_reg.h deleted file mode 100644 index a32475ed0d18..000000000000 --- a/drivers/char/riscom8_reg.h +++ /dev/null @@ -1,254 +0,0 @@ -/* - * linux/drivers/char/riscom8_reg.h -- RISCom/8 multiport serial driver. - */ - -/* - * Definitions for RISCom/8 Async Mux card by SDL Communications, Inc. - */ - -/* - * Address mapping between Cirrus Logic CD180 chip internal registers - * and ISA port addresses: - * - * CL-CD180 A6 A5 A4 A3 A2 A1 A0 - * ISA A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 - */ -#define RC_TO_ISA(r) ((((r)&0x07)<<1) | (((r)&~0x07)<<7)) - - -/* RISCom/8 On-Board Registers (assuming address translation) */ - -#define RC_RI 0x100 /* Ring Indicator Register (R/O) */ -#define RC_DTR 0x100 /* DTR Register (W/O) */ -#define RC_BSR 0x101 /* Board Status Register (R/O) */ -#define RC_CTOUT 0x101 /* Clear Timeout (W/O) */ - - -/* Board Status Register */ - -#define RC_BSR_TOUT 0x08 /* Hardware Timeout */ -#define RC_BSR_RINT 0x04 /* Receiver Interrupt */ -#define RC_BSR_TINT 0x02 /* Transmitter Interrupt */ -#define RC_BSR_MINT 0x01 /* Modem Ctl Interrupt */ - - -/* On-board oscillator frequency (in Hz) */ -#define RC_OSCFREQ 9830400 - -/* Values of choice for Interrupt ACKs */ -#define RC_ACK_MINT 0x81 /* goes to PILR1 */ -#define RC_ACK_RINT 0x82 /* goes to PILR3 */ -#define RC_ACK_TINT 0x84 /* goes to PILR2 */ - -/* Chip ID (sorry, only one chip now) */ -#define RC_ID 0x10 - -/* Definitions for Cirrus Logic CL-CD180 8-port async mux chip */ - -#define CD180_NCH 8 /* Total number of channels */ -#define CD180_TPC 16 /* Ticks per character */ -#define CD180_NFIFO 8 /* TX FIFO size */ - - -/* Global registers */ - -#define CD180_GIVR 0x40 /* Global Interrupt Vector Register */ -#define CD180_GICR 0x41 /* Global Interrupting Channel Register */ -#define CD180_PILR1 0x61 /* Priority Interrupt Level Register 1 */ -#define CD180_PILR2 0x62 /* Priority Interrupt Level Register 2 */ -#define CD180_PILR3 0x63 /* Priority Interrupt Level Register 3 */ -#define CD180_CAR 0x64 /* Channel Access Register */ -#define CD180_GFRCR 0x6b /* Global Firmware Revision Code Register */ -#define CD180_PPRH 0x70 /* Prescaler Period Register High */ -#define CD180_PPRL 0x71 /* Prescaler Period Register Low */ -#define CD180_RDR 0x78 /* Receiver Data Register */ -#define CD180_RCSR 0x7a /* Receiver Character Status Register */ -#define CD180_TDR 0x7b /* Transmit Data Register */ -#define CD180_EOIR 0x7f /* End of Interrupt Register */ - - -/* Channel Registers */ - -#define CD180_CCR 0x01 /* Channel Command Register */ -#define CD180_IER 0x02 /* Interrupt Enable Register */ -#define CD180_COR1 0x03 /* Channel Option Register 1 */ -#define CD180_COR2 0x04 /* Channel Option Register 2 */ -#define CD180_COR3 0x05 /* Channel Option Register 3 */ -#define CD180_CCSR 0x06 /* Channel Control Status Register */ -#define CD180_RDCR 0x07 /* Receive Data Count Register */ -#define CD180_SCHR1 0x09 /* Special Character Register 1 */ -#define CD180_SCHR2 0x0a /* Special Character Register 2 */ -#define CD180_SCHR3 0x0b /* Special Character Register 3 */ -#define CD180_SCHR4 0x0c /* Special Character Register 4 */ -#define CD180_MCOR1 0x10 /* Modem Change Option 1 Register */ -#define CD180_MCOR2 0x11 /* Modem Change Option 2 Register */ -#define CD180_MCR 0x12 /* Modem Change Register */ -#define CD180_RTPR 0x18 /* Receive Timeout Period Register */ -#define CD180_MSVR 0x28 /* Modem Signal Value Register */ -#define CD180_RBPRH 0x31 /* Receive Baud Rate Period Register High */ -#define CD180_RBPRL 0x32 /* Receive Baud Rate Period Register Low */ -#define CD180_TBPRH 0x39 /* Transmit Baud Rate Period Register High */ -#define CD180_TBPRL 0x3a /* Transmit Baud Rate Period Register Low */ - - -/* Global Interrupt Vector Register (R/W) */ - -#define GIVR_ITMASK 0x07 /* Interrupt type mask */ -#define GIVR_IT_MODEM 0x01 /* Modem Signal Change Interrupt */ -#define GIVR_IT_TX 0x02 /* Transmit Data Interrupt */ -#define GIVR_IT_RCV 0x03 /* Receive Good Data Interrupt */ -#define GIVR_IT_REXC 0x07 /* Receive Exception Interrupt */ - - -/* Global Interrupt Channel Register (R/W) */ - -#define GICR_CHAN 0x1c /* Channel Number Mask */ -#define GICR_CHAN_OFF 2 /* Channel Number Offset */ - - -/* Channel Address Register (R/W) */ - -#define CAR_CHAN 0x07 /* Channel Number Mask */ -#define CAR_A7 0x08 /* A7 Address Extension (unused) */ - - -/* Receive Character Status Register (R/O) */ - -#define RCSR_TOUT 0x80 /* Rx Timeout */ -#define RCSR_SCDET 0x70 /* Special Character Detected Mask */ -#define RCSR_NO_SC 0x00 /* No Special Characters Detected */ -#define RCSR_SC_1 0x10 /* Special Char 1 (or 1 & 3) Detected */ -#define RCSR_SC_2 0x20 /* Special Char 2 (or 2 & 4) Detected */ -#define RCSR_SC_3 0x30 /* Special Char 3 Detected */ -#define RCSR_SC_4 0x40 /* Special Char 4 Detected */ -#define RCSR_BREAK 0x08 /* Break has been detected */ -#define RCSR_PE 0x04 /* Parity Error */ -#define RCSR_FE 0x02 /* Frame Error */ -#define RCSR_OE 0x01 /* Overrun Error */ - - -/* Channel Command Register (R/W) (commands in groups can be OR-ed) */ - -#define CCR_HARDRESET 0x81 /* Reset the chip */ - -#define CCR_SOFTRESET 0x80 /* Soft Channel Reset */ - -#define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */ -#define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */ -#define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */ - -#define CCR_SSCH1 0x21 /* Send Special Character 1 */ - -#define CCR_SSCH2 0x22 /* Send Special Character 2 */ - -#define CCR_SSCH3 0x23 /* Send Special Character 3 */ - -#define CCR_SSCH4 0x24 /* Send Special Character 4 */ - -#define CCR_TXEN 0x18 /* Enable Transmitter */ -#define CCR_RXEN 0x12 /* Enable Receiver */ - -#define CCR_TXDIS 0x14 /* Disable Transmitter */ -#define CCR_RXDIS 0x11 /* Disable Receiver */ - - -/* Interrupt Enable Register (R/W) */ - -#define IER_DSR 0x80 /* Enable interrupt on DSR change */ -#define IER_CD 0x40 /* Enable interrupt on CD change */ -#define IER_CTS 0x20 /* Enable interrupt on CTS change */ -#define IER_RXD 0x10 /* Enable interrupt on Receive Data */ -#define IER_RXSC 0x08 /* Enable interrupt on Receive Spec. Char */ -#define IER_TXRDY 0x04 /* Enable interrupt on TX FIFO empty */ -#define IER_TXEMPTY 0x02 /* Enable interrupt on TX completely empty */ -#define IER_RET 0x01 /* Enable interrupt on RX Exc. Timeout */ - - -/* Channel Option Register 1 (R/W) */ - -#define COR1_ODDP 0x80 /* Odd Parity */ -#define COR1_PARMODE 0x60 /* Parity Mode mask */ -#define COR1_NOPAR 0x00 /* No Parity */ -#define COR1_FORCEPAR 0x20 /* Force Parity */ -#define COR1_NORMPAR 0x40 /* Normal Parity */ -#define COR1_IGNORE 0x10 /* Ignore Parity on RX */ -#define COR1_STOPBITS 0x0c /* Number of Stop Bits */ -#define COR1_1SB 0x00 /* 1 Stop Bit */ -#define COR1_15SB 0x04 /* 1.5 Stop Bits */ -#define COR1_2SB 0x08 /* 2 Stop Bits */ -#define COR1_CHARLEN 0x03 /* Character Length */ -#define COR1_5BITS 0x00 /* 5 bits */ -#define COR1_6BITS 0x01 /* 6 bits */ -#define COR1_7BITS 0x02 /* 7 bits */ -#define COR1_8BITS 0x03 /* 8 bits */ - - -/* Channel Option Register 2 (R/W) */ - -#define COR2_IXM 0x80 /* Implied XON mode */ -#define COR2_TXIBE 0x40 /* Enable In-Band (XON/XOFF) Flow Control */ -#define COR2_ETC 0x20 /* Embedded Tx Commands Enable */ -#define COR2_LLM 0x10 /* Local Loopback Mode */ -#define COR2_RLM 0x08 /* Remote Loopback Mode */ -#define COR2_RTSAO 0x04 /* RTS Automatic Output Enable */ -#define COR2_CTSAE 0x02 /* CTS Automatic Enable */ -#define COR2_DSRAE 0x01 /* DSR Automatic Enable */ - - -/* Channel Option Register 3 (R/W) */ - -#define COR3_XONCH 0x80 /* XON is a pair of characters (1 & 3) */ -#define COR3_XOFFCH 0x40 /* XOFF is a pair of characters (2 & 4) */ -#define COR3_FCT 0x20 /* Flow-Control Transparency Mode */ -#define COR3_SCDE 0x10 /* Special Character Detection Enable */ -#define COR3_RXTH 0x0f /* RX FIFO Threshold value (1-8) */ - - -/* Channel Control Status Register (R/O) */ - -#define CCSR_RXEN 0x80 /* Receiver Enabled */ -#define CCSR_RXFLOFF 0x40 /* Receive Flow Off (XOFF was sent) */ -#define CCSR_RXFLON 0x20 /* Receive Flow On (XON was sent) */ -#define CCSR_TXEN 0x08 /* Transmitter Enabled */ -#define CCSR_TXFLOFF 0x04 /* Transmit Flow Off (got XOFF) */ -#define CCSR_TXFLON 0x02 /* Transmit Flow On (got XON) */ - - -/* Modem Change Option Register 1 (R/W) */ - -#define MCOR1_DSRZD 0x80 /* Detect 0->1 transition of DSR */ -#define MCOR1_CDZD 0x40 /* Detect 0->1 transition of CD */ -#define MCOR1_CTSZD 0x20 /* Detect 0->1 transition of CTS */ -#define MCOR1_DTRTH 0x0f /* Auto DTR flow control Threshold (1-8) */ -#define MCOR1_NODTRFC 0x0 /* Automatic DTR flow control disabled */ - - -/* Modem Change Option Register 2 (R/W) */ - -#define MCOR2_DSROD 0x80 /* Detect 1->0 transition of DSR */ -#define MCOR2_CDOD 0x40 /* Detect 1->0 transition of CD */ -#define MCOR2_CTSOD 0x20 /* Detect 1->0 transition of CTS */ - - -/* Modem Change Register (R/W) */ - -#define MCR_DSRCHG 0x80 /* DSR Changed */ -#define MCR_CDCHG 0x40 /* CD Changed */ -#define MCR_CTSCHG 0x20 /* CTS Changed */ - - -/* Modem Signal Value Register (R/W) */ - -#define MSVR_DSR 0x80 /* Current state of DSR input */ -#define MSVR_CD 0x40 /* Current state of CD input */ -#define MSVR_CTS 0x20 /* Current state of CTS input */ -#define MSVR_DTR 0x02 /* Current state of DTR output */ -#define MSVR_RTS 0x01 /* Current state of RTS output */ - - -/* Escape characters */ - -#define CD180_C_ESC 0x00 /* Escape character */ -#define CD180_C_SBRK 0x81 /* Start sending BREAK */ -#define CD180_C_DELAY 0x82 /* Delay output */ -#define CD180_C_EBRK 0x83 /* Stop sending BREAK */ diff --git a/drivers/char/serial167.c b/drivers/char/serial167.c deleted file mode 100644 index 674af6933978..000000000000 --- a/drivers/char/serial167.c +++ /dev/null @@ -1,2489 +0,0 @@ -/* - * linux/drivers/char/serial167.c - * - * Driver for MVME166/7 board serial ports, which are via a CD2401. - * Based very much on cyclades.c. - * - * MVME166/7 work by Richard Hirst [richard@sleepie.demon.co.uk] - * - * ============================================================== - * - * static char rcsid[] = - * "$Revision: 1.36.1.4 $$Date: 1995/03/29 06:14:14 $"; - * - * linux/kernel/cyclades.c - * - * Maintained by Marcio Saito (cyclades@netcom.com) and - * Randolph Bentson (bentson@grieg.seaslug.org) - * - * Much of the design and some of the code came from serial.c - * which was copyright (C) 1991, 1992 Linus Torvalds. It was - * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, - * and then fixed as suggested by Michael K. Johnson 12/12/92. - * - * This version does not support shared irq's. - * - * $Log: cyclades.c,v $ - * Revision 1.36.1.4 1995/03/29 06:14:14 bentson - * disambiguate between Cyclom-16Y and Cyclom-32Ye; - * - * Changes: - * - * 200 lines of changes record removed - RGH 11-10-95, starting work on - * converting this to drive serial ports on mvme166 (cd2401). - * - * Arnaldo Carvalho de Melo - 2000/08/25 - * - get rid of verify_area - * - use get_user to access memory from userspace in set_threshold, - * set_default_threshold and set_timeout - * - don't use the panic function in serial167_init - * - do resource release on failure on serial167_init - * - include missing restore_flags in mvme167_serial_console_setup - * - * Kars de Jong - 2004/09/06 - * - replace bottom half handler with task queue handler - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - -#include -#include - -#include -#include - -#define SERIAL_PARANOIA_CHECK -#undef SERIAL_DEBUG_OPEN -#undef SERIAL_DEBUG_THROTTLE -#undef SERIAL_DEBUG_OTHER -#undef SERIAL_DEBUG_IO -#undef SERIAL_DEBUG_COUNT -#undef SERIAL_DEBUG_DTR -#undef CYCLOM_16Y_HACK -#define CYCLOM_ENABLE_MONITORING - -#define WAKEUP_CHARS 256 - -#define STD_COM_FLAGS (0) - -static struct tty_driver *cy_serial_driver; -extern int serial_console; -static struct cyclades_port *serial_console_info = NULL; -static unsigned int serial_console_cflag = 0; -u_char initial_console_speed; - -/* Base address of cd2401 chip on mvme166/7 */ - -#define BASE_ADDR (0xfff45000) -#define pcc2chip ((volatile u_char *)0xfff42000) -#define PccSCCMICR 0x1d -#define PccSCCTICR 0x1e -#define PccSCCRICR 0x1f -#define PccTPIACKR 0x25 -#define PccRPIACKR 0x27 -#define PccIMLR 0x3f - -/* This is the per-port data structure */ -struct cyclades_port cy_port[] = { - /* CARD# */ - {-1}, /* ttyS0 */ - {-1}, /* ttyS1 */ - {-1}, /* ttyS2 */ - {-1}, /* ttyS3 */ -}; - -#define NR_PORTS ARRAY_SIZE(cy_port) - -/* - * This is used to look up the divisor speeds and the timeouts - * We're normally limited to 15 distinct baud rates. The extra - * are accessed via settings in info->flags. - * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, - * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, - * HI VHI - */ -static int baud_table[] = { - 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, - 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, - 0 -}; - -#if 0 -static char baud_co[] = { /* 25 MHz clock option table */ - /* value => 00 01 02 03 04 */ - /* divide by 8 32 128 512 2048 */ - 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, - 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; - -static char baud_bpr[] = { /* 25 MHz baud rate period table */ - 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, - 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 -}; -#endif - -/* I think 166 brd clocks 2401 at 20MHz.... */ - -/* These values are written directly to tcor, and >> 5 for writing to rcor */ -static u_char baud_co[] = { /* 20 MHz clock option table */ - 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x60, 0x60, 0x40, - 0x40, 0x40, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; - -/* These values written directly to tbpr/rbpr */ -static u_char baud_bpr[] = { /* 20 MHz baud rate period table */ - 0x00, 0xc0, 0x80, 0x58, 0x6c, 0x40, 0xc0, 0x81, 0x40, 0x81, - 0x57, 0x40, 0x81, 0x40, 0x81, 0x40, 0x2b, 0x20, 0x15, 0x10 -}; - -static u_char baud_cor4[] = { /* receive threshold */ - 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, - 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07 -}; - -static void shutdown(struct cyclades_port *); -static int startup(struct cyclades_port *); -static void cy_throttle(struct tty_struct *); -static void cy_unthrottle(struct tty_struct *); -static void config_setup(struct cyclades_port *); -#ifdef CYCLOM_SHOW_STATUS -static void show_status(int); -#endif - -/* - * I have my own version of udelay(), as it is needed when initialising - * the chip, before the delay loop has been calibrated. Should probably - * reference one of the vmechip2 or pccchip2 counter for an accurate - * delay, but this wild guess will do for now. - */ - -void my_udelay(long us) -{ - u_char x; - volatile u_char *p = &x; - int i; - - while (us--) - for (i = 100; i; i--) - x |= *p; -} - -static inline int serial_paranoia_check(struct cyclades_port *info, char *name, - const char *routine) -{ -#ifdef SERIAL_PARANOIA_CHECK - if (!info) { - printk("Warning: null cyclades_port for (%s) in %s\n", name, - routine); - return 1; - } - - if (info < &cy_port[0] || info >= &cy_port[NR_PORTS]) { - printk("Warning: cyclades_port out of range for (%s) in %s\n", - name, routine); - return 1; - } - - if (info->magic != CYCLADES_MAGIC) { - printk("Warning: bad magic number for serial struct (%s) in " - "%s\n", name, routine); - return 1; - } -#endif - return 0; -} /* serial_paranoia_check */ - -#if 0 -/* The following diagnostic routines allow the driver to spew - information on the screen, even (especially!) during interrupts. - */ -void SP(char *data) -{ - unsigned long flags; - local_irq_save(flags); - printk(KERN_EMERG "%s", data); - local_irq_restore(flags); -} - -char scrn[2]; -void CP(char data) -{ - unsigned long flags; - local_irq_save(flags); - scrn[0] = data; - printk(KERN_EMERG "%c", scrn); - local_irq_restore(flags); -} /* CP */ - -void CP1(int data) -{ - (data < 10) ? CP(data + '0') : CP(data + 'A' - 10); -} /* CP1 */ -void CP2(int data) -{ - CP1((data >> 4) & 0x0f); - CP1(data & 0x0f); -} /* CP2 */ -void CP4(int data) -{ - CP2((data >> 8) & 0xff); - CP2(data & 0xff); -} /* CP4 */ -void CP8(long data) -{ - CP4((data >> 16) & 0xffff); - CP4(data & 0xffff); -} /* CP8 */ -#endif - -/* This routine waits up to 1000 micro-seconds for the previous - command to the Cirrus chip to complete and then issues the - new command. An error is returned if the previous command - didn't finish within the time limit. - */ -u_short write_cy_cmd(volatile u_char * base_addr, u_char cmd) -{ - unsigned long flags; - volatile int i; - - local_irq_save(flags); - /* Check to see that the previous command has completed */ - for (i = 0; i < 100; i++) { - if (base_addr[CyCCR] == 0) { - break; - } - my_udelay(10L); - } - /* if the CCR never cleared, the previous command - didn't finish within the "reasonable time" */ - if (i == 10) { - local_irq_restore(flags); - return (-1); - } - - /* Issue the new command */ - base_addr[CyCCR] = cmd; - local_irq_restore(flags); - return (0); -} /* write_cy_cmd */ - -/* cy_start and cy_stop provide software output flow control as a - function of XON/XOFF, software CTS, and other such stuff. */ - -static void cy_stop(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - unsigned long flags; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_stop %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_stop")) - return; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) (channel); /* index channel */ - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - local_irq_restore(flags); -} /* cy_stop */ - -static void cy_start(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - unsigned long flags; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_start %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_start")) - return; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) (channel); - base_addr[CyIER] |= CyTxMpty; - local_irq_restore(flags); -} /* cy_start */ - -/* The real interrupt service routines are called - whenever the card wants its hand held--chars - received, out buffer empty, modem change, etc. - */ -static irqreturn_t cd2401_rxerr_interrupt(int irq, void *dev_id) -{ - struct tty_struct *tty; - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - unsigned char err, rfoc; - int channel; - char data; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - info = &cy_port[channel]; - info->last_active = jiffies; - - if ((err = base_addr[CyRISR]) & CyTIMEOUT) { - /* This is a receive timeout interrupt, ignore it */ - base_addr[CyREOIR] = CyNOTRANS; - return IRQ_HANDLED; - } - - /* Read a byte of data if there is any - assume the error - * is associated with this character */ - - if ((rfoc = base_addr[CyRFOC]) != 0) - data = base_addr[CyRDR]; - else - data = 0; - - /* if there is nowhere to put the data, discard it */ - if (info->tty == 0) { - base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; - return IRQ_HANDLED; - } else { /* there is an open port for this data */ - tty = info->tty; - if (err & info->ignore_status_mask) { - base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; - return IRQ_HANDLED; - } - if (tty_buffer_request_room(tty, 1) != 0) { - if (err & info->read_status_mask) { - if (err & CyBREAK) { - tty_insert_flip_char(tty, data, - TTY_BREAK); - if (info->flags & ASYNC_SAK) { - do_SAK(tty); - } - } else if (err & CyFRAME) { - tty_insert_flip_char(tty, data, - TTY_FRAME); - } else if (err & CyPARITY) { - tty_insert_flip_char(tty, data, - TTY_PARITY); - } else if (err & CyOVERRUN) { - tty_insert_flip_char(tty, 0, - TTY_OVERRUN); - /* - If the flip buffer itself is - overflowing, we still lose - the next incoming character. - */ - if (tty_buffer_request_room(tty, 1) != - 0) { - tty_insert_flip_char(tty, data, - TTY_FRAME); - } - /* These two conditions may imply */ - /* a normal read should be done. */ - /* else if(data & CyTIMEOUT) */ - /* else if(data & CySPECHAR) */ - } else { - tty_insert_flip_char(tty, 0, - TTY_NORMAL); - } - } else { - tty_insert_flip_char(tty, data, TTY_NORMAL); - } - } else { - /* there was a software buffer overrun - and nothing could be done about it!!! */ - } - } - tty_schedule_flip(tty); - /* end of service */ - base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; - return IRQ_HANDLED; -} /* cy_rxerr_interrupt */ - -static irqreturn_t cd2401_modem_interrupt(int irq, void *dev_id) -{ - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - int mdm_change; - int mdm_status; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - info = &cy_port[channel]; - info->last_active = jiffies; - - mdm_change = base_addr[CyMISR]; - mdm_status = base_addr[CyMSVR1]; - - if (info->tty == 0) { /* nowhere to put the data, ignore it */ - ; - } else { - if ((mdm_change & CyDCD) - && (info->flags & ASYNC_CHECK_CD)) { - if (mdm_status & CyDCD) { -/* CP('!'); */ - wake_up_interruptible(&info->open_wait); - } else { -/* CP('@'); */ - tty_hangup(info->tty); - wake_up_interruptible(&info->open_wait); - info->flags &= ~ASYNC_NORMAL_ACTIVE; - } - } - if ((mdm_change & CyCTS) - && (info->flags & ASYNC_CTS_FLOW)) { - if (info->tty->stopped) { - if (mdm_status & CyCTS) { - /* !!! cy_start isn't used because... */ - info->tty->stopped = 0; - base_addr[CyIER] |= CyTxMpty; - tty_wakeup(info->tty); - } - } else { - if (!(mdm_status & CyCTS)) { - /* !!! cy_stop isn't used because... */ - info->tty->stopped = 1; - base_addr[CyIER] &= - ~(CyTxMpty | CyTxRdy); - } - } - } - if (mdm_status & CyDSR) { - } - } - base_addr[CyMEOIR] = 0; - return IRQ_HANDLED; -} /* cy_modem_interrupt */ - -static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id) -{ - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - int char_count, saved_cnt; - int outch; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - - /* validate the port number (as configured and open) */ - if ((channel < 0) || (NR_PORTS <= channel)) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - base_addr[CyTEOIR] = CyNOTRANS; - return IRQ_HANDLED; - } - info = &cy_port[channel]; - info->last_active = jiffies; - if (info->tty == 0) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - base_addr[CyTEOIR] = CyNOTRANS; - return IRQ_HANDLED; - } - - /* load the on-chip space available for outbound data */ - saved_cnt = char_count = base_addr[CyTFTC]; - - if (info->x_char) { /* send special char */ - outch = info->x_char; - base_addr[CyTDR] = outch; - char_count--; - info->x_char = 0; - } - - if (info->x_break) { - /* The Cirrus chip requires the "Embedded Transmit - Commands" of start break, delay, and end break - sequences to be sent. The duration of the - break is given in TICs, which runs at HZ - (typically 100) and the PPR runs at 200 Hz, - so the delay is duration * 200/HZ, and thus a - break can run from 1/100 sec to about 5/4 sec. - Need to check these values - RGH 141095. - */ - base_addr[CyTDR] = 0; /* start break */ - base_addr[CyTDR] = 0x81; - base_addr[CyTDR] = 0; /* delay a bit */ - base_addr[CyTDR] = 0x82; - base_addr[CyTDR] = info->x_break * 200 / HZ; - base_addr[CyTDR] = 0; /* terminate break */ - base_addr[CyTDR] = 0x83; - char_count -= 7; - info->x_break = 0; - } - - while (char_count > 0) { - if (!info->xmit_cnt) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - break; - } - if (info->xmit_buf == 0) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - break; - } - if (info->tty->stopped || info->tty->hw_stopped) { - base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); - break; - } - /* Because the Embedded Transmit Commands have been - enabled, we must check to see if the escape - character, NULL, is being sent. If it is, we - must ensure that there is room for it to be - doubled in the output stream. Therefore we - no longer advance the pointer when the character - is fetched, but rather wait until after the check - for a NULL output character. (This is necessary - because there may not be room for the two chars - needed to send a NULL. - */ - outch = info->xmit_buf[info->xmit_tail]; - if (outch) { - info->xmit_cnt--; - info->xmit_tail = (info->xmit_tail + 1) - & (PAGE_SIZE - 1); - base_addr[CyTDR] = outch; - char_count--; - } else { - if (char_count > 1) { - info->xmit_cnt--; - info->xmit_tail = (info->xmit_tail + 1) - & (PAGE_SIZE - 1); - base_addr[CyTDR] = outch; - base_addr[CyTDR] = 0; - char_count--; - char_count--; - } else { - break; - } - } - } - - if (info->xmit_cnt < WAKEUP_CHARS) - tty_wakeup(info->tty); - - base_addr[CyTEOIR] = (char_count != saved_cnt) ? 0 : CyNOTRANS; - return IRQ_HANDLED; -} /* cy_tx_interrupt */ - -static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id) -{ - struct tty_struct *tty; - struct cyclades_port *info; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - char data; - int char_count; - int save_cnt; - - /* determine the channel and change to that context */ - channel = (u_short) (base_addr[CyLICR] >> 2); - info = &cy_port[channel]; - info->last_active = jiffies; - save_cnt = char_count = base_addr[CyRFOC]; - - /* if there is nowhere to put the data, discard it */ - if (info->tty == 0) { - while (char_count--) { - data = base_addr[CyRDR]; - } - } else { /* there is an open port for this data */ - tty = info->tty; - /* load # characters available from the chip */ - -#ifdef CYCLOM_ENABLE_MONITORING - ++info->mon.int_count; - info->mon.char_count += char_count; - if (char_count > info->mon.char_max) - info->mon.char_max = char_count; - info->mon.char_last = char_count; -#endif - while (char_count--) { - data = base_addr[CyRDR]; - tty_insert_flip_char(tty, data, TTY_NORMAL); -#ifdef CYCLOM_16Y_HACK - udelay(10L); -#endif - } - tty_schedule_flip(tty); - } - /* end of service */ - base_addr[CyREOIR] = save_cnt ? 0 : CyNOTRANS; - return IRQ_HANDLED; -} /* cy_rx_interrupt */ - -/* This is called whenever a port becomes active; - interrupts are enabled and DTR & RTS are turned on. - */ -static int startup(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; - int channel; - - if (info->flags & ASYNC_INITIALIZED) { - return 0; - } - - if (!info->type) { - if (info->tty) { - set_bit(TTY_IO_ERROR, &info->tty->flags); - } - return 0; - } - if (!info->xmit_buf) { - info->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); - if (!info->xmit_buf) { - return -ENOMEM; - } - } - - config_setup(info); - - channel = info->line; - -#ifdef SERIAL_DEBUG_OPEN - printk("startup channel %d\n", channel); -#endif - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); - - base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ - base_addr[CyMSVR1] = CyRTS; -/* CP('S');CP('1'); */ - base_addr[CyMSVR2] = CyDTR; - -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - - base_addr[CyIER] |= CyRxData; - info->flags |= ASYNC_INITIALIZED; - - if (info->tty) { - clear_bit(TTY_IO_ERROR, &info->tty->flags); - } - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - - local_irq_restore(flags); - -#ifdef SERIAL_DEBUG_OPEN - printk(" done\n"); -#endif - return 0; -} /* startup */ - -void start_xmit(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - - channel = info->line; - local_irq_save(flags); - base_addr[CyCAR] = channel; - base_addr[CyIER] |= CyTxMpty; - local_irq_restore(flags); -} /* start_xmit */ - -/* - * This routine shuts down a serial port; interrupts are disabled, - * and DTR is dropped if the hangup on close termio flag is on. - */ -static void shutdown(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - - if (!(info->flags & ASYNC_INITIALIZED)) { -/* CP('$'); */ - return; - } - - channel = info->line; - -#ifdef SERIAL_DEBUG_OPEN - printk("shutdown channel %d\n", channel); -#endif - - /* !!! REALLY MUST WAIT FOR LAST CHARACTER TO BE - SENT BEFORE DROPPING THE LINE !!! (Perhaps - set some flag that is read when XMTY happens.) - Other choices are to delay some fixed interval - or schedule some later processing. - */ - local_irq_save(flags); - if (info->xmit_buf) { - free_page((unsigned long)info->xmit_buf); - info->xmit_buf = NULL; - } - - base_addr[CyCAR] = (u_char) channel; - if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { - base_addr[CyMSVR1] = 0; -/* CP('C');CP('1'); */ - base_addr[CyMSVR2] = 0; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: dropping DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - } - write_cy_cmd(base_addr, CyDIS_RCVR); - /* it may be appropriate to clear _XMIT at - some later date (after testing)!!! */ - - if (info->tty) { - set_bit(TTY_IO_ERROR, &info->tty->flags); - } - info->flags &= ~ASYNC_INITIALIZED; - local_irq_restore(flags); - -#ifdef SERIAL_DEBUG_OPEN - printk(" done\n"); -#endif -} /* shutdown */ - -/* - * This routine finds or computes the various line characteristics. - */ -static void config_setup(struct cyclades_port *info) -{ - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned cflag; - int i; - unsigned char ti, need_init_chan = 0; - - if (!info->tty || !info->tty->termios) { - return; - } - if (info->line == -1) { - return; - } - cflag = info->tty->termios->c_cflag; - - /* baud rate */ - i = cflag & CBAUD; -#ifdef CBAUDEX -/* Starting with kernel 1.1.65, there is direct support for - higher baud rates. The following code supports those - changes. The conditional aspect allows this driver to be - used for earlier as well as later kernel versions. (The - mapping is slightly different from serial.c because there - is still the possibility of supporting 75 kbit/sec with - the Cyclades board.) - */ - if (i & CBAUDEX) { - if (i == B57600) - i = 16; - else if (i == B115200) - i = 18; -#ifdef B78600 - else if (i == B78600) - i = 17; -#endif - else - info->tty->termios->c_cflag &= ~CBAUDEX; - } -#endif - if (i == 15) { - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - i += 1; - if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - i += 3; - } - /* Don't ever change the speed of the console port. It will - * run at the speed specified in bootinfo, or at 19.2K */ - /* Actually, it should run at whatever speed 166Bug was using */ - /* Note info->timeout isn't used at present */ - if (info != serial_console_info) { - info->tbpr = baud_bpr[i]; /* Tx BPR */ - info->tco = baud_co[i]; /* Tx CO */ - info->rbpr = baud_bpr[i]; /* Rx BPR */ - info->rco = baud_co[i] >> 5; /* Rx CO */ - if (baud_table[i] == 134) { - info->timeout = - (info->xmit_fifo_size * HZ * 30 / 269) + 2; - /* get it right for 134.5 baud */ - } else if (baud_table[i]) { - info->timeout = - (info->xmit_fifo_size * HZ * 15 / baud_table[i]) + - 2; - /* this needs to be propagated into the card info */ - } else { - info->timeout = 0; - } - } - /* By tradition (is it a standard?) a baud rate of zero - implies the line should be/has been closed. A bit - later in this routine such a test is performed. */ - - /* byte size and parity */ - info->cor7 = 0; - info->cor6 = 0; - info->cor5 = 0; - info->cor4 = (info->default_threshold ? info->default_threshold : baud_cor4[i]); /* receive threshold */ - /* Following two lines added 101295, RGH. */ - /* It is obviously wrong to access CyCORx, and not info->corx here, - * try and remember to fix it later! */ - channel = info->line; - base_addr[CyCAR] = (u_char) channel; - if (C_CLOCAL(info->tty)) { - if (base_addr[CyIER] & CyMdmCh) - base_addr[CyIER] &= ~CyMdmCh; /* without modem intr */ - /* ignore 1->0 modem transitions */ - if (base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR4] &= ~(CyDSR | CyCTS | CyDCD); - /* ignore 0->1 modem transitions */ - if (base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR5] &= ~(CyDSR | CyCTS | CyDCD); - } else { - if ((base_addr[CyIER] & CyMdmCh) != CyMdmCh) - base_addr[CyIER] |= CyMdmCh; /* with modem intr */ - /* act on 1->0 modem transitions */ - if ((base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) != - (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR4] |= CyDSR | CyCTS | CyDCD; - /* act on 0->1 modem transitions */ - if ((base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) != - (CyDSR | CyCTS | CyDCD)) - base_addr[CyCOR5] |= CyDSR | CyCTS | CyDCD; - } - info->cor3 = (cflag & CSTOPB) ? Cy_2_STOP : Cy_1_STOP; - info->cor2 = CyETC; - switch (cflag & CSIZE) { - case CS5: - info->cor1 = Cy_5_BITS; - break; - case CS6: - info->cor1 = Cy_6_BITS; - break; - case CS7: - info->cor1 = Cy_7_BITS; - break; - case CS8: - info->cor1 = Cy_8_BITS; - break; - } - if (cflag & PARENB) { - if (cflag & PARODD) { - info->cor1 |= CyPARITY_O; - } else { - info->cor1 |= CyPARITY_E; - } - } else { - info->cor1 |= CyPARITY_NONE; - } - - /* CTS flow control flag */ -#if 0 - /* Don't complcate matters for now! RGH 141095 */ - if (cflag & CRTSCTS) { - info->flags |= ASYNC_CTS_FLOW; - info->cor2 |= CyCtsAE; - } else { - info->flags &= ~ASYNC_CTS_FLOW; - info->cor2 &= ~CyCtsAE; - } -#endif - if (cflag & CLOCAL) - info->flags &= ~ASYNC_CHECK_CD; - else - info->flags |= ASYNC_CHECK_CD; - - /*********************************************** - The hardware option, CyRtsAO, presents RTS when - the chip has characters to send. Since most modems - use RTS as reverse (inbound) flow control, this - option is not used. If inbound flow control is - necessary, DTR can be programmed to provide the - appropriate signals for use with a non-standard - cable. Contact Marcio Saito for details. - ***********************************************/ - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - - /* CyCMR set once only in mvme167_init_serial() */ - if (base_addr[CyLICR] != channel << 2) - base_addr[CyLICR] = channel << 2; - if (base_addr[CyLIVR] != 0x5c) - base_addr[CyLIVR] = 0x5c; - - /* tx and rx baud rate */ - - if (base_addr[CyCOR1] != info->cor1) - need_init_chan = 1; - if (base_addr[CyTCOR] != info->tco) - base_addr[CyTCOR] = info->tco; - if (base_addr[CyTBPR] != info->tbpr) - base_addr[CyTBPR] = info->tbpr; - if (base_addr[CyRCOR] != info->rco) - base_addr[CyRCOR] = info->rco; - if (base_addr[CyRBPR] != info->rbpr) - base_addr[CyRBPR] = info->rbpr; - - /* set line characteristics according configuration */ - - if (base_addr[CySCHR1] != START_CHAR(info->tty)) - base_addr[CySCHR1] = START_CHAR(info->tty); - if (base_addr[CySCHR2] != STOP_CHAR(info->tty)) - base_addr[CySCHR2] = STOP_CHAR(info->tty); - if (base_addr[CySCRL] != START_CHAR(info->tty)) - base_addr[CySCRL] = START_CHAR(info->tty); - if (base_addr[CySCRH] != START_CHAR(info->tty)) - base_addr[CySCRH] = START_CHAR(info->tty); - if (base_addr[CyCOR1] != info->cor1) - base_addr[CyCOR1] = info->cor1; - if (base_addr[CyCOR2] != info->cor2) - base_addr[CyCOR2] = info->cor2; - if (base_addr[CyCOR3] != info->cor3) - base_addr[CyCOR3] = info->cor3; - if (base_addr[CyCOR4] != info->cor4) - base_addr[CyCOR4] = info->cor4; - if (base_addr[CyCOR5] != info->cor5) - base_addr[CyCOR5] = info->cor5; - if (base_addr[CyCOR6] != info->cor6) - base_addr[CyCOR6] = info->cor6; - if (base_addr[CyCOR7] != info->cor7) - base_addr[CyCOR7] = info->cor7; - - if (need_init_chan) - write_cy_cmd(base_addr, CyINIT_CHAN); - - base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ - - /* 2ms default rx timeout */ - ti = info->default_timeout ? info->default_timeout : 0x02; - if (base_addr[CyRTPRL] != ti) - base_addr[CyRTPRL] = ti; - if (base_addr[CyRTPRH] != 0) - base_addr[CyRTPRH] = 0; - - /* Set up RTS here also ????? RGH 141095 */ - if (i == 0) { /* baud rate is zero, turn off line */ - if ((base_addr[CyMSVR2] & CyDTR) == CyDTR) - base_addr[CyMSVR2] = 0; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: dropping DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - } else { - if ((base_addr[CyMSVR2] & CyDTR) != CyDTR) - base_addr[CyMSVR2] = CyDTR; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - } - - if (info->tty) { - clear_bit(TTY_IO_ERROR, &info->tty->flags); - } - - local_irq_restore(flags); - -} /* config_setup */ - -static int cy_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - -#ifdef SERIAL_DEBUG_IO - printk("cy_put_char %s(0x%02x)\n", tty->name, ch); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_put_char")) - return 0; - - if (!info->xmit_buf) - return 0; - - local_irq_save(flags); - if (info->xmit_cnt >= PAGE_SIZE - 1) { - local_irq_restore(flags); - return 0; - } - - info->xmit_buf[info->xmit_head++] = ch; - info->xmit_head &= PAGE_SIZE - 1; - info->xmit_cnt++; - local_irq_restore(flags); - return 1; -} /* cy_put_char */ - -static void cy_flush_chars(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - -#ifdef SERIAL_DEBUG_IO - printk("cy_flush_chars %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) - return; - - if (info->xmit_cnt <= 0 || tty->stopped - || tty->hw_stopped || !info->xmit_buf) - return; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = channel; - base_addr[CyIER] |= CyTxMpty; - local_irq_restore(flags); -} /* cy_flush_chars */ - -/* This routine gets called when tty_write has put something into - the write_queue. If the port is not already transmitting stuff, - start it off by enabling interrupts. The interrupt service - routine will then ensure that the characters are sent. If the - port is already active, there is no need to kick it. - */ -static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - int c, total = 0; - -#ifdef SERIAL_DEBUG_IO - printk("cy_write %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_write")) { - return 0; - } - - if (!info->xmit_buf) { - return 0; - } - - while (1) { - local_irq_save(flags); - c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, - SERIAL_XMIT_SIZE - info->xmit_head)); - if (c <= 0) { - local_irq_restore(flags); - break; - } - - memcpy(info->xmit_buf + info->xmit_head, buf, c); - info->xmit_head = - (info->xmit_head + c) & (SERIAL_XMIT_SIZE - 1); - info->xmit_cnt += c; - local_irq_restore(flags); - - buf += c; - count -= c; - total += c; - } - - if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { - start_xmit(info); - } - return total; -} /* cy_write */ - -static int cy_write_room(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - int ret; - -#ifdef SERIAL_DEBUG_IO - printk("cy_write_room %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_write_room")) - return 0; - ret = PAGE_SIZE - info->xmit_cnt - 1; - if (ret < 0) - ret = 0; - return ret; -} /* cy_write_room */ - -static int cy_chars_in_buffer(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef SERIAL_DEBUG_IO - printk("cy_chars_in_buffer %s %d\n", tty->name, info->xmit_cnt); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) - return 0; - - return info->xmit_cnt; -} /* cy_chars_in_buffer */ - -static void cy_flush_buffer(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - -#ifdef SERIAL_DEBUG_IO - printk("cy_flush_buffer %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) - return; - local_irq_save(flags); - info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; - local_irq_restore(flags); - tty_wakeup(tty); -} /* cy_flush_buffer */ - -/* This routine is called by the upper-layer tty layer to signal - that incoming characters should be throttled or that the - throttle should be released. - */ -static void cy_throttle(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - -#ifdef SERIAL_DEBUG_THROTTLE - char buf[64]; - - printk("throttle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); - printk("cy_throttle %s\n", tty->name); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { - return; - } - - if (I_IXOFF(tty)) { - info->x_char = STOP_CHAR(tty); - /* Should use the "Send Special Character" feature!!! */ - } - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = 0; - local_irq_restore(flags); -} /* cy_throttle */ - -static void cy_unthrottle(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - unsigned long flags; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - -#ifdef SERIAL_DEBUG_THROTTLE - char buf[64]; - - printk("throttle %s: %d....\n", tty_name(tty, buf), - tty->ldisc.chars_in_buffer(tty)); - printk("cy_unthrottle %s\n", tty->name); -#endif - - if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { - return; - } - - if (I_IXOFF(tty)) { - info->x_char = START_CHAR(tty); - /* Should use the "Send Special Character" feature!!! */ - } - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = CyRTS; - local_irq_restore(flags); -} /* cy_unthrottle */ - -static int -get_serial_info(struct cyclades_port *info, - struct serial_struct __user * retinfo) -{ - struct serial_struct tmp; - -/* CP('g'); */ - if (!retinfo) - return -EFAULT; - memset(&tmp, 0, sizeof(tmp)); - tmp.type = info->type; - tmp.line = info->line; - tmp.port = info->line; - tmp.irq = 0; - tmp.flags = info->flags; - tmp.baud_base = 0; /*!!! */ - tmp.close_delay = info->close_delay; - tmp.custom_divisor = 0; /*!!! */ - tmp.hub6 = 0; /*!!! */ - return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; -} /* get_serial_info */ - -static int -set_serial_info(struct cyclades_port *info, - struct serial_struct __user * new_info) -{ - struct serial_struct new_serial; - struct cyclades_port old_info; - -/* CP('s'); */ - if (!new_info) - return -EFAULT; - if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) - return -EFAULT; - old_info = *info; - - if (!capable(CAP_SYS_ADMIN)) { - if ((new_serial.close_delay != info->close_delay) || - ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) != - (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))) - return -EPERM; - info->flags = ((info->flags & ~ASYNC_USR_MASK) | - (new_serial.flags & ASYNC_USR_MASK)); - goto check_and_exit; - } - - /* - * OK, past this point, all the error checking has been done. - * At this point, we start making changes..... - */ - - info->flags = ((info->flags & ~ASYNC_FLAGS) | - (new_serial.flags & ASYNC_FLAGS)); - info->close_delay = new_serial.close_delay; - -check_and_exit: - if (info->flags & ASYNC_INITIALIZED) { - config_setup(info); - return 0; - } - return startup(info); -} /* set_serial_info */ - -static int cy_tiocmget(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - int channel; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long flags; - unsigned char status; - - channel = info->line; - - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - status = base_addr[CyMSVR1] | base_addr[CyMSVR2]; - local_irq_restore(flags); - - return ((status & CyRTS) ? TIOCM_RTS : 0) - | ((status & CyDTR) ? TIOCM_DTR : 0) - | ((status & CyDCD) ? TIOCM_CAR : 0) - | ((status & CyDSR) ? TIOCM_DSR : 0) - | ((status & CyCTS) ? TIOCM_CTS : 0); -} /* cy_tiocmget */ - -static int -cy_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) -{ - struct cyclades_port *info = tty->driver_data; - int channel; - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long flags; - - channel = info->line; - - if (set & TIOCM_RTS) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = CyRTS; - local_irq_restore(flags); - } - if (set & TIOCM_DTR) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; -/* CP('S');CP('2'); */ - base_addr[CyMSVR2] = CyDTR; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - local_irq_restore(flags); - } - - if (clear & TIOCM_RTS) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = 0; - local_irq_restore(flags); - } - if (clear & TIOCM_DTR) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; -/* CP('C');CP('2'); */ - base_addr[CyMSVR2] = 0; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: dropping DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - local_irq_restore(flags); - } - - return 0; -} /* set_modem_info */ - -static void send_break(struct cyclades_port *info, int duration) -{ /* Let the transmit ISR take care of this (since it - requires stuffing characters into the output stream). - */ - info->x_break = duration; - if (!info->xmit_cnt) { - start_xmit(info); - } -} /* send_break */ - -static int -get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) -{ - - if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) - return -EFAULT; - info->mon.int_count = 0; - info->mon.char_count = 0; - info->mon.char_max = 0; - info->mon.char_last = 0; - return 0; -} - -static int set_threshold(struct cyclades_port *info, unsigned long __user * arg) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long value; - int channel; - - if (get_user(value, arg)) - return -EFAULT; - - channel = info->line; - info->cor4 &= ~CyREC_FIFO; - info->cor4 |= value & CyREC_FIFO; - base_addr[CyCOR4] = info->cor4; - return 0; -} - -static int -get_threshold(struct cyclades_port *info, unsigned long __user * value) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned long tmp; - - channel = info->line; - - tmp = base_addr[CyCOR4] & CyREC_FIFO; - return put_user(tmp, value); -} - -static int -set_default_threshold(struct cyclades_port *info, unsigned long __user * arg) -{ - unsigned long value; - - if (get_user(value, arg)) - return -EFAULT; - - info->default_threshold = value & 0x0f; - return 0; -} - -static int -get_default_threshold(struct cyclades_port *info, unsigned long __user * value) -{ - return put_user(info->default_threshold, value); -} - -static int set_timeout(struct cyclades_port *info, unsigned long __user * arg) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned long value; - - if (get_user(value, arg)) - return -EFAULT; - - channel = info->line; - - base_addr[CyRTPRL] = value & 0xff; - base_addr[CyRTPRH] = (value >> 8) & 0xff; - return 0; -} - -static int get_timeout(struct cyclades_port *info, unsigned long __user * value) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - unsigned long tmp; - - channel = info->line; - - tmp = base_addr[CyRTPRL]; - return put_user(tmp, value); -} - -static int set_default_timeout(struct cyclades_port *info, unsigned long value) -{ - info->default_timeout = value & 0xff; - return 0; -} - -static int -get_default_timeout(struct cyclades_port *info, unsigned long __user * value) -{ - return put_user(info->default_timeout, value); -} - -static int -cy_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct cyclades_port *info = tty->driver_data; - int ret_val = 0; - void __user *argp = (void __user *)arg; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_ioctl %s, cmd = %x arg = %lx\n", tty->name, cmd, arg); /* */ -#endif - - tty_lock(); - - switch (cmd) { - case CYGETMON: - ret_val = get_mon_info(info, argp); - break; - case CYGETTHRESH: - ret_val = get_threshold(info, argp); - break; - case CYSETTHRESH: - ret_val = set_threshold(info, argp); - break; - case CYGETDEFTHRESH: - ret_val = get_default_threshold(info, argp); - break; - case CYSETDEFTHRESH: - ret_val = set_default_threshold(info, argp); - break; - case CYGETTIMEOUT: - ret_val = get_timeout(info, argp); - break; - case CYSETTIMEOUT: - ret_val = set_timeout(info, argp); - break; - case CYGETDEFTIMEOUT: - ret_val = get_default_timeout(info, argp); - break; - case CYSETDEFTIMEOUT: - ret_val = set_default_timeout(info, (unsigned long)arg); - break; - case TCSBRK: /* SVID version: non-zero arg --> no break */ - ret_val = tty_check_change(tty); - if (ret_val) - break; - tty_wait_until_sent(tty, 0); - if (!arg) - send_break(info, HZ / 4); /* 1/4 second */ - break; - case TCSBRKP: /* support for POSIX tcsendbreak() */ - ret_val = tty_check_change(tty); - if (ret_val) - break; - tty_wait_until_sent(tty, 0); - send_break(info, arg ? arg * (HZ / 10) : HZ / 4); - break; - -/* The following commands are incompletely implemented!!! */ - case TIOCGSERIAL: - ret_val = get_serial_info(info, argp); - break; - case TIOCSSERIAL: - ret_val = set_serial_info(info, argp); - break; - default: - ret_val = -ENOIOCTLCMD; - } - tty_unlock(); - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_ioctl done\n"); -#endif - - return ret_val; -} /* cy_ioctl */ - -static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_set_termios %s\n", tty->name); -#endif - - if (tty->termios->c_cflag == old_termios->c_cflag) - return; - config_setup(info); - - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->stopped = 0; - cy_start(tty); - } -#ifdef tytso_patch_94Nov25_1726 - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&info->open_wait); -#endif -} /* cy_set_termios */ - -static void cy_close(struct tty_struct *tty, struct file *filp) -{ - struct cyclades_port *info = tty->driver_data; - -/* CP('C'); */ -#ifdef SERIAL_DEBUG_OTHER - printk("cy_close %s\n", tty->name); -#endif - - if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { - return; - } -#ifdef SERIAL_DEBUG_OPEN - printk("cy_close %s, count = %d\n", tty->name, info->count); -#endif - - if ((tty->count == 1) && (info->count != 1)) { - /* - * Uh, oh. tty->count is 1, which means that the tty - * structure will be freed. Info->count should always - * be one in these conditions. If it's greater than - * one, we've got real problems, since it means the - * serial port won't be shutdown. - */ - printk("cy_close: bad serial port count; tty->count is 1, " - "info->count is %d\n", info->count); - info->count = 1; - } -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: decrementing count to %d\n", __LINE__, - info->count - 1); -#endif - if (--info->count < 0) { - printk("cy_close: bad serial port count for ttys%d: %d\n", - info->line, info->count); -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: setting count to 0\n", __LINE__); -#endif - info->count = 0; - } - if (info->count) - return; - info->flags |= ASYNC_CLOSING; - if (info->flags & ASYNC_INITIALIZED) - tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ - shutdown(info); - cy_flush_buffer(tty); - tty_ldisc_flush(tty); - info->tty = NULL; - if (info->blocked_open) { - if (info->close_delay) { - msleep_interruptible(jiffies_to_msecs - (info->close_delay)); - } - wake_up_interruptible(&info->open_wait); - } - info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); - wake_up_interruptible(&info->close_wait); - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_close done\n"); -#endif -} /* cy_close */ - -/* - * cy_hangup() --- called by tty_hangup() when a hangup is signaled. - */ -void cy_hangup(struct tty_struct *tty) -{ - struct cyclades_port *info = tty->driver_data; - -#ifdef SERIAL_DEBUG_OTHER - printk("cy_hangup %s\n", tty->name); /* */ -#endif - - if (serial_paranoia_check(info, tty->name, "cy_hangup")) - return; - - shutdown(info); -#if 0 - info->event = 0; - info->count = 0; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: setting count to 0\n", __LINE__); -#endif - info->tty = 0; -#endif - info->flags &= ~ASYNC_NORMAL_ACTIVE; - wake_up_interruptible(&info->open_wait); -} /* cy_hangup */ - -/* - * ------------------------------------------------------------ - * cy_open() and friends - * ------------------------------------------------------------ - */ - -static int -block_til_ready(struct tty_struct *tty, struct file *filp, - struct cyclades_port *info) -{ - DECLARE_WAITQUEUE(wait, current); - unsigned long flags; - int channel; - int retval; - volatile u_char *base_addr = (u_char *) BASE_ADDR; - - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if (info->flags & ASYNC_CLOSING) { - interruptible_sleep_on(&info->close_wait); - if (info->flags & ASYNC_HUP_NOTIFY) { - return -EAGAIN; - } else { - return -ERESTARTSYS; - } - } - - /* - * If non-blocking mode is set, then make the check up front - * and then exit. - */ - if (filp->f_flags & O_NONBLOCK) { - info->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - /* - * Block waiting for the carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, info->count is dropped by one, so that - * cy_close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - retval = 0; - add_wait_queue(&info->open_wait, &wait); -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready before block: %s, count = %d\n", - tty->name, info->count); - /**/ -#endif - info->count--; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: decrementing count to %d\n", __LINE__, info->count); -#endif - info->blocked_open++; - - channel = info->line; - - while (1) { - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; - base_addr[CyMSVR1] = CyRTS; -/* CP('S');CP('4'); */ - base_addr[CyMSVR2] = CyDTR; -#ifdef SERIAL_DEBUG_DTR - printk("cyc: %d: raising DTR\n", __LINE__); - printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], - base_addr[CyMSVR2]); -#endif - local_irq_restore(flags); - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) - || !(info->flags & ASYNC_INITIALIZED)) { - if (info->flags & ASYNC_HUP_NOTIFY) { - retval = -EAGAIN; - } else { - retval = -ERESTARTSYS; - } - break; - } - local_irq_save(flags); - base_addr[CyCAR] = (u_char) channel; -/* CP('L');CP1(1 && C_CLOCAL(tty)); CP1(1 && (base_addr[CyMSVR1] & CyDCD) ); */ - if (!(info->flags & ASYNC_CLOSING) - && (C_CLOCAL(tty) - || (base_addr[CyMSVR1] & CyDCD))) { - local_irq_restore(flags); - break; - } - local_irq_restore(flags); - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready blocking: %s, count = %d\n", - tty->name, info->count); - /**/ -#endif - tty_unlock(); - schedule(); - tty_lock(); - } - __set_current_state(TASK_RUNNING); - remove_wait_queue(&info->open_wait, &wait); - if (!tty_hung_up_p(filp)) { - info->count++; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: incrementing count to %d\n", __LINE__, - info->count); -#endif - } - info->blocked_open--; -#ifdef SERIAL_DEBUG_OPEN - printk("block_til_ready after blocking: %s, count = %d\n", - tty->name, info->count); - /**/ -#endif - if (retval) - return retval; - info->flags |= ASYNC_NORMAL_ACTIVE; - return 0; -} /* block_til_ready */ - -/* - * This routine is called whenever a serial port is opened. It - * performs the serial-specific initialization for the tty structure. - */ -int cy_open(struct tty_struct *tty, struct file *filp) -{ - struct cyclades_port *info; - int retval, line; - -/* CP('O'); */ - line = tty->index; - if ((line < 0) || (NR_PORTS <= line)) { - return -ENODEV; - } - info = &cy_port[line]; - if (info->line < 0) { - return -ENODEV; - } -#ifdef SERIAL_DEBUG_OTHER - printk("cy_open %s\n", tty->name); /* */ -#endif - if (serial_paranoia_check(info, tty->name, "cy_open")) { - return -ENODEV; - } -#ifdef SERIAL_DEBUG_OPEN - printk("cy_open %s, count = %d\n", tty->name, info->count); - /**/ -#endif - info->count++; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: incrementing count to %d\n", __LINE__, info->count); -#endif - tty->driver_data = info; - info->tty = tty; - - /* - * Start up serial port - */ - retval = startup(info); - if (retval) { - return retval; - } - - retval = block_til_ready(tty, filp, info); - if (retval) { -#ifdef SERIAL_DEBUG_OPEN - printk("cy_open returning after block_til_ready with %d\n", - retval); -#endif - return retval; - } -#ifdef SERIAL_DEBUG_OPEN - printk("cy_open done\n"); - /**/ -#endif - return 0; -} /* cy_open */ - -/* - * --------------------------------------------------------------------- - * serial167_init() and friends - * - * serial167_init() is called at boot-time to initialize the serial driver. - * --------------------------------------------------------------------- - */ - -/* - * This routine prints out the appropriate serial driver version - * number, and identifies which options were configured into this - * driver. - */ -static void show_version(void) -{ - printk("MVME166/167 cd2401 driver\n"); -} /* show_version */ - -/* initialize chips on card -- return number of valid - chips (which is number of ports/4) */ - -/* - * This initialises the hardware to a reasonable state. It should - * probe the chip first so as to copy 166-Bug setup as a default for - * port 0. It initialises CMR to CyASYNC; that is never done again, so - * as to limit the number of CyINIT_CHAN commands in normal running. - * - * ... I wonder what I should do if this fails ... - */ - -void mvme167_serial_console_setup(int cflag) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int ch; - u_char spd; - u_char rcor, rbpr, badspeed = 0; - unsigned long flags; - - local_irq_save(flags); - - /* - * First probe channel zero of the chip, to see what speed has - * been selected. - */ - - base_addr[CyCAR] = 0; - - rcor = base_addr[CyRCOR] << 5; - rbpr = base_addr[CyRBPR]; - - for (spd = 0; spd < sizeof(baud_bpr); spd++) - if (rbpr == baud_bpr[spd] && rcor == baud_co[spd]) - break; - if (spd >= sizeof(baud_bpr)) { - spd = 14; /* 19200 */ - badspeed = 1; /* Failed to identify speed */ - } - initial_console_speed = spd; - - /* OK, we have chosen a speed, now reset and reinitialise */ - - my_udelay(20000L); /* Allow time for any active o/p to complete */ - if (base_addr[CyCCR] != 0x00) { - local_irq_restore(flags); - /* printk(" chip is never idle (CCR != 0)\n"); */ - return; - } - - base_addr[CyCCR] = CyCHIP_RESET; /* Reset the chip */ - my_udelay(1000L); - - if (base_addr[CyGFRCR] == 0x00) { - local_irq_restore(flags); - /* printk(" chip is not responding (GFRCR stayed 0)\n"); */ - return; - } - - /* - * System clock is 20Mhz, divided by 2048, so divide by 10 for a 1.0ms - * tick - */ - - base_addr[CyTPR] = 10; - - base_addr[CyPILR1] = 0x01; /* Interrupt level for modem change */ - base_addr[CyPILR2] = 0x02; /* Interrupt level for tx ints */ - base_addr[CyPILR3] = 0x03; /* Interrupt level for rx ints */ - - /* - * Attempt to set up all channels to something reasonable, and - * bang out a INIT_CHAN command. We should then be able to limit - * the amount of fiddling we have to do in normal running. - */ - - for (ch = 3; ch >= 0; ch--) { - base_addr[CyCAR] = (u_char) ch; - base_addr[CyIER] = 0; - base_addr[CyCMR] = CyASYNC; - base_addr[CyLICR] = (u_char) ch << 2; - base_addr[CyLIVR] = 0x5c; - base_addr[CyTCOR] = baud_co[spd]; - base_addr[CyTBPR] = baud_bpr[spd]; - base_addr[CyRCOR] = baud_co[spd] >> 5; - base_addr[CyRBPR] = baud_bpr[spd]; - base_addr[CySCHR1] = 'Q' & 0x1f; - base_addr[CySCHR2] = 'X' & 0x1f; - base_addr[CySCRL] = 0; - base_addr[CySCRH] = 0; - base_addr[CyCOR1] = Cy_8_BITS | CyPARITY_NONE; - base_addr[CyCOR2] = 0; - base_addr[CyCOR3] = Cy_1_STOP; - base_addr[CyCOR4] = baud_cor4[spd]; - base_addr[CyCOR5] = 0; - base_addr[CyCOR6] = 0; - base_addr[CyCOR7] = 0; - base_addr[CyRTPRL] = 2; - base_addr[CyRTPRH] = 0; - base_addr[CyMSVR1] = 0; - base_addr[CyMSVR2] = 0; - write_cy_cmd(base_addr, CyINIT_CHAN | CyDIS_RCVR | CyDIS_XMTR); - } - - /* - * Now do specials for channel zero.... - */ - - base_addr[CyMSVR1] = CyRTS; - base_addr[CyMSVR2] = CyDTR; - base_addr[CyIER] = CyRxData; - write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); - - local_irq_restore(flags); - - my_udelay(20000L); /* Let it all settle down */ - - printk("CD2401 initialised, chip is rev 0x%02x\n", base_addr[CyGFRCR]); - if (badspeed) - printk - (" WARNING: Failed to identify line speed, rcor=%02x,rbpr=%02x\n", - rcor >> 5, rbpr); -} /* serial_console_init */ - -static const struct tty_operations cy_ops = { - .open = cy_open, - .close = cy_close, - .write = cy_write, - .put_char = cy_put_char, - .flush_chars = cy_flush_chars, - .write_room = cy_write_room, - .chars_in_buffer = cy_chars_in_buffer, - .flush_buffer = cy_flush_buffer, - .ioctl = cy_ioctl, - .throttle = cy_throttle, - .unthrottle = cy_unthrottle, - .set_termios = cy_set_termios, - .stop = cy_stop, - .start = cy_start, - .hangup = cy_hangup, - .tiocmget = cy_tiocmget, - .tiocmset = cy_tiocmset, -}; - -/* The serial driver boot-time initialization code! - Hardware I/O ports are mapped to character special devices on a - first found, first allocated manner. That is, this code searches - for Cyclom cards in the system. As each is found, it is probed - to discover how many chips (and thus how many ports) are present. - These ports are mapped to the tty ports 64 and upward in monotonic - fashion. If an 8-port card is replaced with a 16-port card, the - port mapping on a following card will shift. - - This approach is different from what is used in the other serial - device driver because the Cyclom is more properly a multiplexer, - not just an aggregation of serial ports on one card. - - If there are more cards with more ports than have been statically - allocated above, a warning is printed and the extra ports are ignored. - */ -static int __init serial167_init(void) -{ - struct cyclades_port *info; - int ret = 0; - int good_ports = 0; - int port_num = 0; - int index; - int DefSpeed; -#ifdef notyet - struct sigaction sa; -#endif - - if (!(mvme16x_config & MVME16x_CONFIG_GOT_CD2401)) - return 0; - - cy_serial_driver = alloc_tty_driver(NR_PORTS); - if (!cy_serial_driver) - return -ENOMEM; - -#if 0 - scrn[1] = '\0'; -#endif - - show_version(); - - /* Has "console=0,9600n8" been used in bootinfo to change speed? */ - if (serial_console_cflag) - DefSpeed = serial_console_cflag & 0017; - else { - DefSpeed = initial_console_speed; - serial_console_info = &cy_port[0]; - serial_console_cflag = DefSpeed | CS8; -#if 0 - serial_console = 64; /*callout_driver.minor_start */ -#endif - } - - /* Initialize the tty_driver structure */ - - cy_serial_driver->owner = THIS_MODULE; - cy_serial_driver->name = "ttyS"; - cy_serial_driver->major = TTY_MAJOR; - cy_serial_driver->minor_start = 64; - cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; - cy_serial_driver->init_termios = tty_std_termios; - cy_serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - cy_serial_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(cy_serial_driver, &cy_ops); - - ret = tty_register_driver(cy_serial_driver); - if (ret) { - printk(KERN_ERR "Couldn't register MVME166/7 serial driver\n"); - put_tty_driver(cy_serial_driver); - return ret; - } - - port_num = 0; - info = cy_port; - for (index = 0; index < 1; index++) { - - good_ports = 4; - - if (port_num < NR_PORTS) { - while (good_ports-- && port_num < NR_PORTS) { - /*** initialize port ***/ - info->magic = CYCLADES_MAGIC; - info->type = PORT_CIRRUS; - info->card = index; - info->line = port_num; - info->flags = STD_COM_FLAGS; - info->tty = NULL; - info->xmit_fifo_size = 12; - info->cor1 = CyPARITY_NONE | Cy_8_BITS; - info->cor2 = CyETC; - info->cor3 = Cy_1_STOP; - info->cor4 = 0x08; /* _very_ small receive threshold */ - info->cor5 = 0; - info->cor6 = 0; - info->cor7 = 0; - info->tbpr = baud_bpr[DefSpeed]; /* Tx BPR */ - info->tco = baud_co[DefSpeed]; /* Tx CO */ - info->rbpr = baud_bpr[DefSpeed]; /* Rx BPR */ - info->rco = baud_co[DefSpeed] >> 5; /* Rx CO */ - info->close_delay = 0; - info->x_char = 0; - info->count = 0; -#ifdef SERIAL_DEBUG_COUNT - printk("cyc: %d: setting count to 0\n", - __LINE__); -#endif - info->blocked_open = 0; - info->default_threshold = 0; - info->default_timeout = 0; - init_waitqueue_head(&info->open_wait); - init_waitqueue_head(&info->close_wait); - /* info->session */ - /* info->pgrp */ -/*** !!!!!!!! this may expose new bugs !!!!!!!!! *********/ - info->read_status_mask = - CyTIMEOUT | CySPECHAR | CyBREAK | CyPARITY | - CyFRAME | CyOVERRUN; - /* info->timeout */ - - printk("ttyS%d ", info->line); - port_num++; - info++; - if (!(port_num & 7)) { - printk("\n "); - } - } - } - printk("\n"); - } - while (port_num < NR_PORTS) { - info->line = -1; - port_num++; - info++; - } - - ret = request_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt, 0, - "cd2401_errors", cd2401_rxerr_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_errors IRQ"); - goto cleanup_serial_driver; - } - - ret = request_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt, 0, - "cd2401_modem", cd2401_modem_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_modem IRQ"); - goto cleanup_irq_cd2401_errors; - } - - ret = request_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt, 0, - "cd2401_txints", cd2401_tx_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_txints IRQ"); - goto cleanup_irq_cd2401_modem; - } - - ret = request_irq(MVME167_IRQ_SER_RX, cd2401_rx_interrupt, 0, - "cd2401_rxints", cd2401_rx_interrupt); - if (ret) { - printk(KERN_ERR "Could't get cd2401_rxints IRQ"); - goto cleanup_irq_cd2401_txints; - } - - /* Now we have registered the interrupt handlers, allow the interrupts */ - - pcc2chip[PccSCCMICR] = 0x15; /* Serial ints are level 5 */ - pcc2chip[PccSCCTICR] = 0x15; - pcc2chip[PccSCCRICR] = 0x15; - - pcc2chip[PccIMLR] = 3; /* Allow PCC2 ints above 3!? */ - - return 0; -cleanup_irq_cd2401_txints: - free_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt); -cleanup_irq_cd2401_modem: - free_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt); -cleanup_irq_cd2401_errors: - free_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt); -cleanup_serial_driver: - if (tty_unregister_driver(cy_serial_driver)) - printk(KERN_ERR - "Couldn't unregister MVME166/7 serial driver\n"); - put_tty_driver(cy_serial_driver); - return ret; -} /* serial167_init */ - -module_init(serial167_init); - -#ifdef CYCLOM_SHOW_STATUS -static void show_status(int line_num) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - int channel; - struct cyclades_port *info; - unsigned long flags; - - info = &cy_port[line_num]; - channel = info->line; - printk(" channel %d\n", channel); - /**/ printk(" cy_port\n"); - printk(" card line flags = %d %d %x\n", - info->card, info->line, info->flags); - printk - (" *tty read_status_mask timeout xmit_fifo_size = %lx %x %x %x\n", - (long)info->tty, info->read_status_mask, info->timeout, - info->xmit_fifo_size); - printk(" cor1,cor2,cor3,cor4,cor5,cor6,cor7 = %x %x %x %x %x %x %x\n", - info->cor1, info->cor2, info->cor3, info->cor4, info->cor5, - info->cor6, info->cor7); - printk(" tbpr,tco,rbpr,rco = %d %d %d %d\n", info->tbpr, info->tco, - info->rbpr, info->rco); - printk(" close_delay event count = %d %d %d\n", info->close_delay, - info->event, info->count); - printk(" x_char blocked_open = %x %x\n", info->x_char, - info->blocked_open); - printk(" open_wait = %lx %lx %lx\n", (long)info->open_wait); - - local_irq_save(flags); - -/* Global Registers */ - - printk(" CyGFRCR %x\n", base_addr[CyGFRCR]); - printk(" CyCAR %x\n", base_addr[CyCAR]); - printk(" CyRISR %x\n", base_addr[CyRISR]); - printk(" CyTISR %x\n", base_addr[CyTISR]); - printk(" CyMISR %x\n", base_addr[CyMISR]); - printk(" CyRIR %x\n", base_addr[CyRIR]); - printk(" CyTIR %x\n", base_addr[CyTIR]); - printk(" CyMIR %x\n", base_addr[CyMIR]); - printk(" CyTPR %x\n", base_addr[CyTPR]); - - base_addr[CyCAR] = (u_char) channel; - -/* Virtual Registers */ - -#if 0 - printk(" CyRIVR %x\n", base_addr[CyRIVR]); - printk(" CyTIVR %x\n", base_addr[CyTIVR]); - printk(" CyMIVR %x\n", base_addr[CyMIVR]); - printk(" CyMISR %x\n", base_addr[CyMISR]); -#endif - -/* Channel Registers */ - - printk(" CyCCR %x\n", base_addr[CyCCR]); - printk(" CyIER %x\n", base_addr[CyIER]); - printk(" CyCOR1 %x\n", base_addr[CyCOR1]); - printk(" CyCOR2 %x\n", base_addr[CyCOR2]); - printk(" CyCOR3 %x\n", base_addr[CyCOR3]); - printk(" CyCOR4 %x\n", base_addr[CyCOR4]); - printk(" CyCOR5 %x\n", base_addr[CyCOR5]); -#if 0 - printk(" CyCCSR %x\n", base_addr[CyCCSR]); - printk(" CyRDCR %x\n", base_addr[CyRDCR]); -#endif - printk(" CySCHR1 %x\n", base_addr[CySCHR1]); - printk(" CySCHR2 %x\n", base_addr[CySCHR2]); -#if 0 - printk(" CySCHR3 %x\n", base_addr[CySCHR3]); - printk(" CySCHR4 %x\n", base_addr[CySCHR4]); - printk(" CySCRL %x\n", base_addr[CySCRL]); - printk(" CySCRH %x\n", base_addr[CySCRH]); - printk(" CyLNC %x\n", base_addr[CyLNC]); - printk(" CyMCOR1 %x\n", base_addr[CyMCOR1]); - printk(" CyMCOR2 %x\n", base_addr[CyMCOR2]); -#endif - printk(" CyRTPRL %x\n", base_addr[CyRTPRL]); - printk(" CyRTPRH %x\n", base_addr[CyRTPRH]); - printk(" CyMSVR1 %x\n", base_addr[CyMSVR1]); - printk(" CyMSVR2 %x\n", base_addr[CyMSVR2]); - printk(" CyRBPR %x\n", base_addr[CyRBPR]); - printk(" CyRCOR %x\n", base_addr[CyRCOR]); - printk(" CyTBPR %x\n", base_addr[CyTBPR]); - printk(" CyTCOR %x\n", base_addr[CyTCOR]); - - local_irq_restore(flags); -} /* show_status */ -#endif - -#if 0 -/* Dummy routine in mvme16x/config.c for now */ - -/* Serial console setup. Called from linux/init/main.c */ - -void console_setup(char *str, int *ints) -{ - char *s; - int baud, bits, parity; - int cflag = 0; - - /* Sanity check. */ - if (ints[0] > 3 || ints[1] > 3) - return; - - /* Get baud, bits and parity */ - baud = 2400; - bits = 8; - parity = 'n'; - if (ints[2]) - baud = ints[2]; - if ((s = strchr(str, ','))) { - do { - s++; - } while (*s >= '0' && *s <= '9'); - if (*s) - parity = *s++; - if (*s) - bits = *s - '0'; - } - - /* Now construct a cflag setting. */ - switch (baud) { - case 1200: - cflag |= B1200; - break; - case 9600: - cflag |= B9600; - break; - case 19200: - cflag |= B19200; - break; - case 38400: - cflag |= B38400; - break; - case 2400: - default: - cflag |= B2400; - break; - } - switch (bits) { - case 7: - cflag |= CS7; - break; - default: - case 8: - cflag |= CS8; - break; - } - switch (parity) { - case 'o': - case 'O': - cflag |= PARODD; - break; - case 'e': - case 'E': - cflag |= PARENB; - break; - } - - serial_console_info = &cy_port[ints[1]]; - serial_console_cflag = cflag; - serial_console = ints[1] + 64; /*callout_driver.minor_start */ -} -#endif - -/* - * The following is probably out of date for 2.1.x serial console stuff. - * - * The console is registered early on from arch/m68k/kernel/setup.c, and - * it therefore relies on the chip being setup correctly by 166-Bug. This - * seems reasonable, as the serial port has been used to invoke the system - * boot. It also means that this function must not rely on any data - * initialisation performed by serial167_init() etc. - * - * Of course, once the console has been registered, we had better ensure - * that serial167_init() doesn't leave the chip non-functional. - * - * The console must be locked when we get here. - */ - -void serial167_console_write(struct console *co, const char *str, - unsigned count) -{ - volatile unsigned char *base_addr = (u_char *) BASE_ADDR; - unsigned long flags; - volatile u_char sink; - u_char ier; - int port; - u_char do_lf = 0; - int i = 0; - - local_irq_save(flags); - - /* Ensure transmitter is enabled! */ - - port = 0; - base_addr[CyCAR] = (u_char) port; - while (base_addr[CyCCR]) - ; - base_addr[CyCCR] = CyENB_XMTR; - - ier = base_addr[CyIER]; - base_addr[CyIER] = CyTxMpty; - - while (1) { - if (pcc2chip[PccSCCTICR] & 0x20) { - /* We have a Tx int. Acknowledge it */ - sink = pcc2chip[PccTPIACKR]; - if ((base_addr[CyLICR] >> 2) == port) { - if (i == count) { - /* Last char of string is now output */ - base_addr[CyTEOIR] = CyNOTRANS; - break; - } - if (do_lf) { - base_addr[CyTDR] = '\n'; - str++; - i++; - do_lf = 0; - } else if (*str == '\n') { - base_addr[CyTDR] = '\r'; - do_lf = 1; - } else { - base_addr[CyTDR] = *str++; - i++; - } - base_addr[CyTEOIR] = 0; - } else - base_addr[CyTEOIR] = CyNOTRANS; - } - } - - base_addr[CyIER] = ier; - - local_irq_restore(flags); -} - -static struct tty_driver *serial167_console_device(struct console *c, - int *index) -{ - *index = c->index; - return cy_serial_driver; -} - -static struct console sercons = { - .name = "ttyS", - .write = serial167_console_write, - .device = serial167_console_device, - .flags = CON_PRINTBUFFER, - .index = -1, -}; - -static int __init serial167_console_init(void) -{ - if (vme_brdtype == VME_TYPE_MVME166 || - vme_brdtype == VME_TYPE_MVME167 || - vme_brdtype == VME_TYPE_MVME177) { - mvme167_serial_console_setup(0); - register_console(&sercons); - } - return 0; -} - -console_initcall(serial167_console_init); - -MODULE_LICENSE("GPL"); diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c deleted file mode 100644 index 47e5753f732a..000000000000 --- a/drivers/char/specialix.c +++ /dev/null @@ -1,2368 +0,0 @@ -/* - * specialix.c -- specialix IO8+ multiport serial driver. - * - * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl) - * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) - * - * Specialix pays for the development and support of this driver. - * Please DO contact io8-linux@specialix.co.uk if you require - * support. But please read the documentation (specialix.txt) - * first. - * - * This driver was developped in the BitWizard linux device - * driver service. If you require a linux device driver for your - * product, please contact devices@BitWizard.nl for a quote. - * - * This code is firmly based on the riscom/8 serial driver, - * written by Dmitry Gorodchanin. The specialix IO8+ card - * programming information was obtained from the CL-CD1865 Data - * Book, and Specialix document number 6200059: IO8+ Hardware - * Functional Specification. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, - * USA. - * - * Revision history: - * - * Revision 1.0: April 1st 1997. - * Initial release for alpha testing. - * Revision 1.1: April 14th 1997. - * Incorporated Richard Hudsons suggestions, - * removed some debugging printk's. - * Revision 1.2: April 15th 1997. - * Ported to 2.1.x kernels. - * Revision 1.3: April 17th 1997 - * Backported to 2.0. (Compatibility macros). - * Revision 1.4: April 18th 1997 - * Fixed DTR/RTS bug that caused the card to indicate - * "don't send data" to a modem after the password prompt. - * Fixed bug for premature (fake) interrupts. - * Revision 1.5: April 19th 1997 - * fixed a minor typo in the header file, cleanup a little. - * performance warnings are now MAXed at once per minute. - * Revision 1.6: May 23 1997 - * Changed the specialix=... format to include interrupt. - * Revision 1.7: May 27 1997 - * Made many more debug printk's a compile time option. - * Revision 1.8: Jul 1 1997 - * port to linux-2.1.43 kernel. - * Revision 1.9: Oct 9 1998 - * Added stuff for the IO8+/PCI version. - * Revision 1.10: Oct 22 1999 / Jan 21 2000. - * Added stuff for setserial. - * Nicolas Mailhot (Nicolas.Mailhot@email.enst.fr) - * - */ - -#define VERSION "1.11" - - -/* - * There is a bunch of documentation about the card, jumpers, config - * settings, restrictions, cables, device names and numbers in - * Documentation/serial/specialix.txt - */ - -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "specialix_io8.h" -#include "cd1865.h" - - -/* - This driver can spew a whole lot of debugging output at you. If you - need maximum performance, you should disable the DEBUG define. To - aid in debugging in the field, I'm leaving the compile-time debug - features enabled, and disable them "runtime". That allows me to - instruct people with problems to enable debugging without requiring - them to recompile... -*/ -#define DEBUG - -static int sx_debug; -static int sx_rxfifo = SPECIALIX_RXFIFO; -static int sx_rtscts; - -#ifdef DEBUG -#define dprintk(f, str...) if (sx_debug & f) printk(str) -#else -#define dprintk(f, str...) /* nothing */ -#endif - -#define SX_DEBUG_FLOW 0x0001 -#define SX_DEBUG_DATA 0x0002 -#define SX_DEBUG_PROBE 0x0004 -#define SX_DEBUG_CHAN 0x0008 -#define SX_DEBUG_INIT 0x0010 -#define SX_DEBUG_RX 0x0020 -#define SX_DEBUG_TX 0x0040 -#define SX_DEBUG_IRQ 0x0080 -#define SX_DEBUG_OPEN 0x0100 -#define SX_DEBUG_TERMIOS 0x0200 -#define SX_DEBUG_SIGNALS 0x0400 -#define SX_DEBUG_FIFO 0x0800 - - -#define func_enter() dprintk(SX_DEBUG_FLOW, "io8: enter %s\n", __func__) -#define func_exit() dprintk(SX_DEBUG_FLOW, "io8: exit %s\n", __func__) - - -/* Configurable options: */ - -/* Am I paranoid or not ? ;-) */ -#define SPECIALIX_PARANOIA_CHECK - -/* - * The following defines are mostly for testing purposes. But if you need - * some nice reporting in your syslog, you can define them also. - */ -#undef SX_REPORT_FIFO -#undef SX_REPORT_OVERRUN - - - - -#define SPECIALIX_LEGAL_FLAGS \ - (ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \ - ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \ - ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP) - -static struct tty_driver *specialix_driver; - -static struct specialix_board sx_board[SX_NBOARD] = { - { 0, SX_IOBASE1, 9, }, - { 0, SX_IOBASE2, 11, }, - { 0, SX_IOBASE3, 12, }, - { 0, SX_IOBASE4, 15, }, -}; - -static struct specialix_port sx_port[SX_NBOARD * SX_NPORT]; - - -static int sx_paranoia_check(struct specialix_port const *port, - char *name, const char *routine) -{ -#ifdef SPECIALIX_PARANOIA_CHECK - static const char *badmagic = KERN_ERR - "sx: Warning: bad specialix port magic number for device %s in %s\n"; - static const char *badinfo = KERN_ERR - "sx: Warning: null specialix port for device %s in %s\n"; - - if (!port) { - printk(badinfo, name, routine); - return 1; - } - if (port->magic != SPECIALIX_MAGIC) { - printk(badmagic, name, routine); - return 1; - } -#endif - return 0; -} - - -/* - * - * Service functions for specialix IO8+ driver. - * - */ - -/* Get board number from pointer */ -static inline int board_No(struct specialix_board *bp) -{ - return bp - sx_board; -} - - -/* Get port number from pointer */ -static inline int port_No(struct specialix_port const *port) -{ - return SX_PORT(port - sx_port); -} - - -/* Get pointer to board from pointer to port */ -static inline struct specialix_board *port_Board( - struct specialix_port const *port) -{ - return &sx_board[SX_BOARD(port - sx_port)]; -} - - -/* Input Byte from CL CD186x register */ -static inline unsigned char sx_in(struct specialix_board *bp, - unsigned short reg) -{ - bp->reg = reg | 0x80; - outb(reg | 0x80, bp->base + SX_ADDR_REG); - return inb(bp->base + SX_DATA_REG); -} - - -/* Output Byte to CL CD186x register */ -static inline void sx_out(struct specialix_board *bp, unsigned short reg, - unsigned char val) -{ - bp->reg = reg | 0x80; - outb(reg | 0x80, bp->base + SX_ADDR_REG); - outb(val, bp->base + SX_DATA_REG); -} - - -/* Input Byte from CL CD186x register */ -static inline unsigned char sx_in_off(struct specialix_board *bp, - unsigned short reg) -{ - bp->reg = reg; - outb(reg, bp->base + SX_ADDR_REG); - return inb(bp->base + SX_DATA_REG); -} - - -/* Output Byte to CL CD186x register */ -static inline void sx_out_off(struct specialix_board *bp, - unsigned short reg, unsigned char val) -{ - bp->reg = reg; - outb(reg, bp->base + SX_ADDR_REG); - outb(val, bp->base + SX_DATA_REG); -} - - -/* Wait for Channel Command Register ready */ -static void sx_wait_CCR(struct specialix_board *bp) -{ - unsigned long delay, flags; - unsigned char ccr; - - for (delay = SX_CCR_TIMEOUT; delay; delay--) { - spin_lock_irqsave(&bp->lock, flags); - ccr = sx_in(bp, CD186x_CCR); - spin_unlock_irqrestore(&bp->lock, flags); - if (!ccr) - return; - udelay(1); - } - - printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp)); -} - - -/* Wait for Channel Command Register ready */ -static void sx_wait_CCR_off(struct specialix_board *bp) -{ - unsigned long delay; - unsigned char crr; - unsigned long flags; - - for (delay = SX_CCR_TIMEOUT; delay; delay--) { - spin_lock_irqsave(&bp->lock, flags); - crr = sx_in_off(bp, CD186x_CCR); - spin_unlock_irqrestore(&bp->lock, flags); - if (!crr) - return; - udelay(1); - } - - printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp)); -} - - -/* - * specialix IO8+ IO range functions. - */ - -static int sx_request_io_range(struct specialix_board *bp) -{ - return request_region(bp->base, - bp->flags & SX_BOARD_IS_PCI ? SX_PCI_IO_SPACE : SX_IO_SPACE, - "specialix IO8+") == NULL; -} - - -static void sx_release_io_range(struct specialix_board *bp) -{ - release_region(bp->base, bp->flags & SX_BOARD_IS_PCI ? - SX_PCI_IO_SPACE : SX_IO_SPACE); -} - - -/* Set the IRQ using the RTS lines that run to the PAL on the board.... */ -static int sx_set_irq(struct specialix_board *bp) -{ - int virq; - int i; - unsigned long flags; - - if (bp->flags & SX_BOARD_IS_PCI) - return 1; - switch (bp->irq) { - /* In the same order as in the docs... */ - case 15: - virq = 0; - break; - case 12: - virq = 1; - break; - case 11: - virq = 2; - break; - case 9: - virq = 3; - break; - default:printk(KERN_ERR - "Speclialix: cannot set irq to %d.\n", bp->irq); - return 0; - } - spin_lock_irqsave(&bp->lock, flags); - for (i = 0; i < 2; i++) { - sx_out(bp, CD186x_CAR, i); - sx_out(bp, CD186x_MSVRTS, ((virq >> i) & 0x1)? MSVR_RTS:0); - } - spin_unlock_irqrestore(&bp->lock, flags); - return 1; -} - - -/* Reset and setup CD186x chip */ -static int sx_init_CD186x(struct specialix_board *bp) -{ - unsigned long flags; - int scaler; - int rv = 1; - - func_enter(); - sx_wait_CCR_off(bp); /* Wait for CCR ready */ - spin_lock_irqsave(&bp->lock, flags); - sx_out_off(bp, CD186x_CCR, CCR_HARDRESET); /* Reset CD186x chip */ - spin_unlock_irqrestore(&bp->lock, flags); - msleep(50); /* Delay 0.05 sec */ - spin_lock_irqsave(&bp->lock, flags); - sx_out_off(bp, CD186x_GIVR, SX_ID); /* Set ID for this chip */ - sx_out_off(bp, CD186x_GICR, 0); /* Clear all bits */ - sx_out_off(bp, CD186x_PILR1, SX_ACK_MINT); /* Prio for modem intr */ - sx_out_off(bp, CD186x_PILR2, SX_ACK_TINT); /* Prio for transmitter intr */ - sx_out_off(bp, CD186x_PILR3, SX_ACK_RINT); /* Prio for receiver intr */ - /* Set RegAckEn */ - sx_out_off(bp, CD186x_SRCR, sx_in(bp, CD186x_SRCR) | SRCR_REGACKEN); - - /* Setting up prescaler. We need 4 ticks per 1 ms */ - scaler = SX_OSCFREQ/SPECIALIX_TPS; - - sx_out_off(bp, CD186x_PPRH, scaler >> 8); - sx_out_off(bp, CD186x_PPRL, scaler & 0xff); - spin_unlock_irqrestore(&bp->lock, flags); - - if (!sx_set_irq(bp)) { - /* Figure out how to pass this along... */ - printk(KERN_ERR "Cannot set irq to %d.\n", bp->irq); - rv = 0; - } - - func_exit(); - return rv; -} - - -static int read_cross_byte(struct specialix_board *bp, int reg, int bit) -{ - int i; - int t; - unsigned long flags; - - spin_lock_irqsave(&bp->lock, flags); - for (i = 0, t = 0; i < 8; i++) { - sx_out_off(bp, CD186x_CAR, i); - if (sx_in_off(bp, reg) & bit) - t |= 1 << i; - } - spin_unlock_irqrestore(&bp->lock, flags); - - return t; -} - - -/* Main probing routine, also sets irq. */ -static int sx_probe(struct specialix_board *bp) -{ - unsigned char val1, val2; - int rev; - int chip; - - func_enter(); - - if (sx_request_io_range(bp)) { - func_exit(); - return 1; - } - - /* Are the I/O ports here ? */ - sx_out_off(bp, CD186x_PPRL, 0x5a); - udelay(1); - val1 = sx_in_off(bp, CD186x_PPRL); - - sx_out_off(bp, CD186x_PPRL, 0xa5); - udelay(1); - val2 = sx_in_off(bp, CD186x_PPRL); - - - if (val1 != 0x5a || val2 != 0xa5) { - printk(KERN_INFO - "sx%d: specialix IO8+ Board at 0x%03x not found.\n", - board_No(bp), bp->base); - sx_release_io_range(bp); - func_exit(); - return 1; - } - - /* Check the DSR lines that Specialix uses as board - identification */ - val1 = read_cross_byte(bp, CD186x_MSVR, MSVR_DSR); - val2 = read_cross_byte(bp, CD186x_MSVR, MSVR_RTS); - dprintk(SX_DEBUG_INIT, - "sx%d: DSR lines are: %02x, rts lines are: %02x\n", - board_No(bp), val1, val2); - - /* They managed to switch the bit order between the docs and - the IO8+ card. The new PCI card now conforms to old docs. - They changed the PCI docs to reflect the situation on the - old card. */ - val2 = (bp->flags & SX_BOARD_IS_PCI)?0x4d : 0xb2; - if (val1 != val2) { - printk(KERN_INFO - "sx%d: specialix IO8+ ID %02x at 0x%03x not found (%02x).\n", - board_No(bp), val2, bp->base, val1); - sx_release_io_range(bp); - func_exit(); - return 1; - } - - - /* Reset CD186x again */ - if (!sx_init_CD186x(bp)) { - sx_release_io_range(bp); - func_exit(); - return 1; - } - - sx_request_io_range(bp); - bp->flags |= SX_BOARD_PRESENT; - - /* Chip revcode pkgtype - GFRCR SRCR bit 7 - CD180 rev B 0x81 0 - CD180 rev C 0x82 0 - CD1864 rev A 0x82 1 - CD1865 rev A 0x83 1 -- Do not use!!! Does not work. - CD1865 rev B 0x84 1 - -- Thanks to Gwen Wang, Cirrus Logic. - */ - - switch (sx_in_off(bp, CD186x_GFRCR)) { - case 0x82: - chip = 1864; - rev = 'A'; - break; - case 0x83: - chip = 1865; - rev = 'A'; - break; - case 0x84: - chip = 1865; - rev = 'B'; - break; - case 0x85: - chip = 1865; - rev = 'C'; - break; /* Does not exist at this time */ - default: - chip = -1; - rev = 'x'; - } - - dprintk(SX_DEBUG_INIT, " GFCR = 0x%02x\n", sx_in_off(bp, CD186x_GFRCR)); - - printk(KERN_INFO - "sx%d: specialix IO8+ board detected at 0x%03x, IRQ %d, CD%d Rev. %c.\n", - board_No(bp), bp->base, bp->irq, chip, rev); - - func_exit(); - return 0; -} - -/* - * - * Interrupt processing routines. - * */ - -static struct specialix_port *sx_get_port(struct specialix_board *bp, - unsigned char const *what) -{ - unsigned char channel; - struct specialix_port *port = NULL; - - channel = sx_in(bp, CD186x_GICR) >> GICR_CHAN_OFF; - dprintk(SX_DEBUG_CHAN, "channel: %d\n", channel); - if (channel < CD186x_NCH) { - port = &sx_port[board_No(bp) * SX_NPORT + channel]; - dprintk(SX_DEBUG_CHAN, "port: %d %p flags: 0x%lx\n", - board_No(bp) * SX_NPORT + channel, port, - port->port.flags & ASYNC_INITIALIZED); - - if (port->port.flags & ASYNC_INITIALIZED) { - dprintk(SX_DEBUG_CHAN, "port: %d %p\n", channel, port); - func_exit(); - return port; - } - } - printk(KERN_INFO "sx%d: %s interrupt from invalid port %d\n", - board_No(bp), what, channel); - return NULL; -} - - -static void sx_receive_exc(struct specialix_board *bp) -{ - struct specialix_port *port; - struct tty_struct *tty; - unsigned char status; - unsigned char ch, flag; - - func_enter(); - - port = sx_get_port(bp, "Receive"); - if (!port) { - dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n"); - func_exit(); - return; - } - tty = port->port.tty; - - status = sx_in(bp, CD186x_RCSR); - - dprintk(SX_DEBUG_RX, "status: 0x%x\n", status); - if (status & RCSR_OE) { - port->overrun++; - dprintk(SX_DEBUG_FIFO, - "sx%d: port %d: Overrun. Total %ld overruns.\n", - board_No(bp), port_No(port), port->overrun); - } - status &= port->mark_mask; - - /* This flip buffer check needs to be below the reading of the - status register to reset the chip's IRQ.... */ - if (tty_buffer_request_room(tty, 1) == 0) { - dprintk(SX_DEBUG_FIFO, - "sx%d: port %d: Working around flip buffer overflow.\n", - board_No(bp), port_No(port)); - func_exit(); - return; - } - - ch = sx_in(bp, CD186x_RDR); - if (!status) { - func_exit(); - return; - } - if (status & RCSR_TOUT) { - printk(KERN_INFO - "sx%d: port %d: Receiver timeout. Hardware problems ?\n", - board_No(bp), port_No(port)); - func_exit(); - return; - - } else if (status & RCSR_BREAK) { - dprintk(SX_DEBUG_RX, "sx%d: port %d: Handling break...\n", - board_No(bp), port_No(port)); - flag = TTY_BREAK; - if (port->port.flags & ASYNC_SAK) - do_SAK(tty); - - } else if (status & RCSR_PE) - flag = TTY_PARITY; - - else if (status & RCSR_FE) - flag = TTY_FRAME; - - else if (status & RCSR_OE) - flag = TTY_OVERRUN; - - else - flag = TTY_NORMAL; - - if (tty_insert_flip_char(tty, ch, flag)) - tty_flip_buffer_push(tty); - func_exit(); -} - - -static void sx_receive(struct specialix_board *bp) -{ - struct specialix_port *port; - struct tty_struct *tty; - unsigned char count; - - func_enter(); - - port = sx_get_port(bp, "Receive"); - if (port == NULL) { - dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n"); - func_exit(); - return; - } - tty = port->port.tty; - - count = sx_in(bp, CD186x_RDCR); - dprintk(SX_DEBUG_RX, "port: %p: count: %d\n", port, count); - port->hits[count > 8 ? 9 : count]++; - - while (count--) - tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL); - tty_flip_buffer_push(tty); - func_exit(); -} - - -static void sx_transmit(struct specialix_board *bp) -{ - struct specialix_port *port; - struct tty_struct *tty; - unsigned char count; - - func_enter(); - port = sx_get_port(bp, "Transmit"); - if (port == NULL) { - func_exit(); - return; - } - dprintk(SX_DEBUG_TX, "port: %p\n", port); - tty = port->port.tty; - - if (port->IER & IER_TXEMPTY) { - /* FIFO drained */ - sx_out(bp, CD186x_CAR, port_No(port)); - port->IER &= ~IER_TXEMPTY; - sx_out(bp, CD186x_IER, port->IER); - func_exit(); - return; - } - - if ((port->xmit_cnt <= 0 && !port->break_length) - || tty->stopped || tty->hw_stopped) { - sx_out(bp, CD186x_CAR, port_No(port)); - port->IER &= ~IER_TXRDY; - sx_out(bp, CD186x_IER, port->IER); - func_exit(); - return; - } - - if (port->break_length) { - if (port->break_length > 0) { - if (port->COR2 & COR2_ETC) { - sx_out(bp, CD186x_TDR, CD186x_C_ESC); - sx_out(bp, CD186x_TDR, CD186x_C_SBRK); - port->COR2 &= ~COR2_ETC; - } - count = min_t(int, port->break_length, 0xff); - sx_out(bp, CD186x_TDR, CD186x_C_ESC); - sx_out(bp, CD186x_TDR, CD186x_C_DELAY); - sx_out(bp, CD186x_TDR, count); - port->break_length -= count; - if (port->break_length == 0) - port->break_length--; - } else { - sx_out(bp, CD186x_TDR, CD186x_C_ESC); - sx_out(bp, CD186x_TDR, CD186x_C_EBRK); - sx_out(bp, CD186x_COR2, port->COR2); - sx_wait_CCR(bp); - sx_out(bp, CD186x_CCR, CCR_CORCHG2); - port->break_length = 0; - } - - func_exit(); - return; - } - - count = CD186x_NFIFO; - do { - sx_out(bp, CD186x_TDR, port->xmit_buf[port->xmit_tail++]); - port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1); - if (--port->xmit_cnt <= 0) - break; - } while (--count > 0); - - if (port->xmit_cnt <= 0) { - sx_out(bp, CD186x_CAR, port_No(port)); - port->IER &= ~IER_TXRDY; - sx_out(bp, CD186x_IER, port->IER); - } - if (port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); - - func_exit(); -} - - -static void sx_check_modem(struct specialix_board *bp) -{ - struct specialix_port *port; - struct tty_struct *tty; - unsigned char mcr; - int msvr_cd; - - dprintk(SX_DEBUG_SIGNALS, "Modem intr. "); - port = sx_get_port(bp, "Modem"); - if (port == NULL) - return; - - tty = port->port.tty; - - mcr = sx_in(bp, CD186x_MCR); - - if ((mcr & MCR_CDCHG)) { - dprintk(SX_DEBUG_SIGNALS, "CD just changed... "); - msvr_cd = sx_in(bp, CD186x_MSVR) & MSVR_CD; - if (msvr_cd) { - dprintk(SX_DEBUG_SIGNALS, "Waking up guys in open.\n"); - wake_up_interruptible(&port->port.open_wait); - } else { - dprintk(SX_DEBUG_SIGNALS, "Sending HUP.\n"); - tty_hangup(tty); - } - } - -#ifdef SPECIALIX_BRAIN_DAMAGED_CTS - if (mcr & MCR_CTSCHG) { - if (sx_in(bp, CD186x_MSVR) & MSVR_CTS) { - tty->hw_stopped = 0; - port->IER |= IER_TXRDY; - if (port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); - } else { - tty->hw_stopped = 1; - port->IER &= ~IER_TXRDY; - } - sx_out(bp, CD186x_IER, port->IER); - } - if (mcr & MCR_DSSXHG) { - if (sx_in(bp, CD186x_MSVR) & MSVR_DSR) { - tty->hw_stopped = 0; - port->IER |= IER_TXRDY; - if (port->xmit_cnt <= port->wakeup_chars) - tty_wakeup(tty); - } else { - tty->hw_stopped = 1; - port->IER &= ~IER_TXRDY; - } - sx_out(bp, CD186x_IER, port->IER); - } -#endif /* SPECIALIX_BRAIN_DAMAGED_CTS */ - - /* Clear change bits */ - sx_out(bp, CD186x_MCR, 0); -} - - -/* The main interrupt processing routine */ -static irqreturn_t sx_interrupt(int dummy, void *dev_id) -{ - unsigned char status; - unsigned char ack; - struct specialix_board *bp = dev_id; - unsigned long loop = 0; - int saved_reg; - unsigned long flags; - - func_enter(); - - spin_lock_irqsave(&bp->lock, flags); - - dprintk(SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __func__, - port_No(sx_get_port(bp, "INT")), - SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1); - if (!(bp->flags & SX_BOARD_ACTIVE)) { - dprintk(SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", - bp->irq); - spin_unlock_irqrestore(&bp->lock, flags); - func_exit(); - return IRQ_NONE; - } - - saved_reg = bp->reg; - - while (++loop < 16) { - status = sx_in(bp, CD186x_SRSR) & - (SRSR_RREQint | SRSR_TREQint | SRSR_MREQint); - if (status == 0) - break; - if (status & SRSR_RREQint) { - ack = sx_in(bp, CD186x_RRAR); - - if (ack == (SX_ID | GIVR_IT_RCV)) - sx_receive(bp); - else if (ack == (SX_ID | GIVR_IT_REXC)) - sx_receive_exc(bp); - else - printk(KERN_ERR - "sx%d: status: 0x%x Bad receive ack 0x%02x.\n", - board_No(bp), status, ack); - - } else if (status & SRSR_TREQint) { - ack = sx_in(bp, CD186x_TRAR); - - if (ack == (SX_ID | GIVR_IT_TX)) - sx_transmit(bp); - else - printk(KERN_ERR "sx%d: status: 0x%x Bad transmit ack 0x%02x. port: %d\n", - board_No(bp), status, ack, - port_No(sx_get_port(bp, "Int"))); - } else if (status & SRSR_MREQint) { - ack = sx_in(bp, CD186x_MRAR); - - if (ack == (SX_ID | GIVR_IT_MODEM)) - sx_check_modem(bp); - else - printk(KERN_ERR - "sx%d: status: 0x%x Bad modem ack 0x%02x.\n", - board_No(bp), status, ack); - - } - - sx_out(bp, CD186x_EOIR, 0); /* Mark end of interrupt */ - } - bp->reg = saved_reg; - outb(bp->reg, bp->base + SX_ADDR_REG); - spin_unlock_irqrestore(&bp->lock, flags); - func_exit(); - return IRQ_HANDLED; -} - - -/* - * Routines for open & close processing. - */ - -static void turn_ints_off(struct specialix_board *bp) -{ - unsigned long flags; - - func_enter(); - spin_lock_irqsave(&bp->lock, flags); - (void) sx_in_off(bp, 0); /* Turn off interrupts. */ - spin_unlock_irqrestore(&bp->lock, flags); - - func_exit(); -} - -static void turn_ints_on(struct specialix_board *bp) -{ - unsigned long flags; - - func_enter(); - - spin_lock_irqsave(&bp->lock, flags); - (void) sx_in(bp, 0); /* Turn ON interrupts. */ - spin_unlock_irqrestore(&bp->lock, flags); - - func_exit(); -} - - -/* Called with disabled interrupts */ -static int sx_setup_board(struct specialix_board *bp) -{ - int error; - - if (bp->flags & SX_BOARD_ACTIVE) - return 0; - - if (bp->flags & SX_BOARD_IS_PCI) - error = request_irq(bp->irq, sx_interrupt, - IRQF_DISABLED | IRQF_SHARED, "specialix IO8+", bp); - else - error = request_irq(bp->irq, sx_interrupt, - IRQF_DISABLED, "specialix IO8+", bp); - - if (error) - return error; - - turn_ints_on(bp); - bp->flags |= SX_BOARD_ACTIVE; - - return 0; -} - - -/* Called with disabled interrupts */ -static void sx_shutdown_board(struct specialix_board *bp) -{ - func_enter(); - - if (!(bp->flags & SX_BOARD_ACTIVE)) { - func_exit(); - return; - } - - bp->flags &= ~SX_BOARD_ACTIVE; - - dprintk(SX_DEBUG_IRQ, "Freeing IRQ%d for board %d.\n", - bp->irq, board_No(bp)); - free_irq(bp->irq, bp); - turn_ints_off(bp); - func_exit(); -} - -static unsigned int sx_crtscts(struct tty_struct *tty) -{ - if (sx_rtscts) - return C_CRTSCTS(tty); - return 1; -} - -/* - * Setting up port characteristics. - * Must be called with disabled interrupts - */ -static void sx_change_speed(struct specialix_board *bp, - struct specialix_port *port) -{ - struct tty_struct *tty; - unsigned long baud; - long tmp; - unsigned char cor1 = 0, cor3 = 0; - unsigned char mcor1 = 0, mcor2 = 0; - static unsigned long again; - unsigned long flags; - - func_enter(); - - tty = port->port.tty; - if (!tty || !tty->termios) { - func_exit(); - return; - } - - port->IER = 0; - port->COR2 = 0; - /* Select port on the board */ - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CAR, port_No(port)); - - /* The Specialix board doens't implement the RTS lines. - They are used to set the IRQ level. Don't touch them. */ - if (sx_crtscts(tty)) - port->MSVR = MSVR_DTR | (sx_in(bp, CD186x_MSVR) & MSVR_RTS); - else - port->MSVR = (sx_in(bp, CD186x_MSVR) & MSVR_RTS); - spin_unlock_irqrestore(&bp->lock, flags); - dprintk(SX_DEBUG_TERMIOS, "sx: got MSVR=%02x.\n", port->MSVR); - baud = tty_get_baud_rate(tty); - - if (baud == 38400) { - if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - baud = 57600; - if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - baud = 115200; - } - - if (!baud) { - /* Drop DTR & exit */ - dprintk(SX_DEBUG_TERMIOS, "Dropping DTR... Hmm....\n"); - if (!sx_crtscts(tty)) { - port->MSVR &= ~MSVR_DTR; - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_MSVR, port->MSVR); - spin_unlock_irqrestore(&bp->lock, flags); - } else - dprintk(SX_DEBUG_TERMIOS, "Can't drop DTR: no DTR.\n"); - return; - } else { - /* Set DTR on */ - if (!sx_crtscts(tty)) - port->MSVR |= MSVR_DTR; - } - - /* - * Now we must calculate some speed depended things - */ - - /* Set baud rate for port */ - tmp = port->custom_divisor ; - if (tmp) - printk(KERN_INFO - "sx%d: Using custom baud rate divisor %ld. \n" - "This is an untested option, please be careful.\n", - port_No(port), tmp); - else - tmp = (((SX_OSCFREQ + baud/2) / baud + CD186x_TPC/2) / - CD186x_TPC); - - if (tmp < 0x10 && time_before(again, jiffies)) { - again = jiffies + HZ * 60; - /* Page 48 of version 2.0 of the CL-CD1865 databook */ - if (tmp >= 12) { - printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n" - "Performance degradation is possible.\n" - "Read specialix.txt for more info.\n", - port_No(port), tmp); - } else { - printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n" - "Warning: overstressing Cirrus chip. This might not work.\n" - "Read specialix.txt for more info.\n", port_No(port), tmp); - } - } - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_RBPRH, (tmp >> 8) & 0xff); - sx_out(bp, CD186x_TBPRH, (tmp >> 8) & 0xff); - sx_out(bp, CD186x_RBPRL, tmp & 0xff); - sx_out(bp, CD186x_TBPRL, tmp & 0xff); - spin_unlock_irqrestore(&bp->lock, flags); - if (port->custom_divisor) - baud = (SX_OSCFREQ + port->custom_divisor/2) / - port->custom_divisor; - baud = (baud + 5) / 10; /* Estimated CPS */ - - /* Two timer ticks seems enough to wakeup something like SLIP driver */ - tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO; - port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ? - SERIAL_XMIT_SIZE - 1 : tmp); - - /* Receiver timeout will be transmission time for 1.5 chars */ - tmp = (SPECIALIX_TPS + SPECIALIX_TPS/2 + baud/2) / baud; - tmp = (tmp > 0xff) ? 0xff : tmp; - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_RTPR, tmp); - spin_unlock_irqrestore(&bp->lock, flags); - switch (C_CSIZE(tty)) { - case CS5: - cor1 |= COR1_5BITS; - break; - case CS6: - cor1 |= COR1_6BITS; - break; - case CS7: - cor1 |= COR1_7BITS; - break; - case CS8: - cor1 |= COR1_8BITS; - break; - } - - if (C_CSTOPB(tty)) - cor1 |= COR1_2SB; - - cor1 |= COR1_IGNORE; - if (C_PARENB(tty)) { - cor1 |= COR1_NORMPAR; - if (C_PARODD(tty)) - cor1 |= COR1_ODDP; - if (I_INPCK(tty)) - cor1 &= ~COR1_IGNORE; - } - /* Set marking of some errors */ - port->mark_mask = RCSR_OE | RCSR_TOUT; - if (I_INPCK(tty)) - port->mark_mask |= RCSR_FE | RCSR_PE; - if (I_BRKINT(tty) || I_PARMRK(tty)) - port->mark_mask |= RCSR_BREAK; - if (I_IGNPAR(tty)) - port->mark_mask &= ~(RCSR_FE | RCSR_PE); - if (I_IGNBRK(tty)) { - port->mark_mask &= ~RCSR_BREAK; - if (I_IGNPAR(tty)) - /* Real raw mode. Ignore all */ - port->mark_mask &= ~RCSR_OE; - } - /* Enable Hardware Flow Control */ - if (C_CRTSCTS(tty)) { -#ifdef SPECIALIX_BRAIN_DAMAGED_CTS - port->IER |= IER_DSR | IER_CTS; - mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD; - mcor2 |= MCOR2_DSROD | MCOR2_CTSOD; - spin_lock_irqsave(&bp->lock, flags); - tty->hw_stopped = !(sx_in(bp, CD186x_MSVR) & - (MSVR_CTS|MSVR_DSR)); - spin_unlock_irqrestore(&bp->lock, flags); -#else - port->COR2 |= COR2_CTSAE; -#endif - } - /* Enable Software Flow Control. FIXME: I'm not sure about this */ - /* Some people reported that it works, but I still doubt it */ - if (I_IXON(tty)) { - port->COR2 |= COR2_TXIBE; - cor3 |= (COR3_FCT | COR3_SCDE); - if (I_IXANY(tty)) - port->COR2 |= COR2_IXM; - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_SCHR1, START_CHAR(tty)); - sx_out(bp, CD186x_SCHR2, STOP_CHAR(tty)); - sx_out(bp, CD186x_SCHR3, START_CHAR(tty)); - sx_out(bp, CD186x_SCHR4, STOP_CHAR(tty)); - spin_unlock_irqrestore(&bp->lock, flags); - } - if (!C_CLOCAL(tty)) { - /* Enable CD check */ - port->IER |= IER_CD; - mcor1 |= MCOR1_CDZD; - mcor2 |= MCOR2_CDOD; - } - - if (C_CREAD(tty)) - /* Enable receiver */ - port->IER |= IER_RXD; - - /* Set input FIFO size (1-8 bytes) */ - cor3 |= sx_rxfifo; - /* Setting up CD186x channel registers */ - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_COR1, cor1); - sx_out(bp, CD186x_COR2, port->COR2); - sx_out(bp, CD186x_COR3, cor3); - spin_unlock_irqrestore(&bp->lock, flags); - /* Make CD186x know about registers change */ - sx_wait_CCR(bp); - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); - /* Setting up modem option registers */ - dprintk(SX_DEBUG_TERMIOS, "Mcor1 = %02x, mcor2 = %02x.\n", - mcor1, mcor2); - sx_out(bp, CD186x_MCOR1, mcor1); - sx_out(bp, CD186x_MCOR2, mcor2); - spin_unlock_irqrestore(&bp->lock, flags); - /* Enable CD186x transmitter & receiver */ - sx_wait_CCR(bp); - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CCR, CCR_TXEN | CCR_RXEN); - /* Enable interrupts */ - sx_out(bp, CD186x_IER, port->IER); - /* And finally set the modem lines... */ - sx_out(bp, CD186x_MSVR, port->MSVR); - spin_unlock_irqrestore(&bp->lock, flags); - - func_exit(); -} - - -/* Must be called with interrupts enabled */ -static int sx_setup_port(struct specialix_board *bp, - struct specialix_port *port) -{ - unsigned long flags; - - func_enter(); - - if (port->port.flags & ASYNC_INITIALIZED) { - func_exit(); - return 0; - } - - if (!port->xmit_buf) { - /* We may sleep in get_zeroed_page() */ - unsigned long tmp; - - tmp = get_zeroed_page(GFP_KERNEL); - if (tmp == 0L) { - func_exit(); - return -ENOMEM; - } - - if (port->xmit_buf) { - free_page(tmp); - func_exit(); - return -ERESTARTSYS; - } - port->xmit_buf = (unsigned char *) tmp; - } - - spin_lock_irqsave(&port->lock, flags); - - if (port->port.tty) - clear_bit(TTY_IO_ERROR, &port->port.tty->flags); - - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - sx_change_speed(bp, port); - port->port.flags |= ASYNC_INITIALIZED; - - spin_unlock_irqrestore(&port->lock, flags); - - - func_exit(); - return 0; -} - - -/* Must be called with interrupts disabled */ -static void sx_shutdown_port(struct specialix_board *bp, - struct specialix_port *port) -{ - struct tty_struct *tty; - int i; - unsigned long flags; - - func_enter(); - - if (!(port->port.flags & ASYNC_INITIALIZED)) { - func_exit(); - return; - } - - if (sx_debug & SX_DEBUG_FIFO) { - dprintk(SX_DEBUG_FIFO, - "sx%d: port %d: %ld overruns, FIFO hits [ ", - board_No(bp), port_No(port), port->overrun); - for (i = 0; i < 10; i++) - dprintk(SX_DEBUG_FIFO, "%ld ", port->hits[i]); - dprintk(SX_DEBUG_FIFO, "].\n"); - } - - if (port->xmit_buf) { - free_page((unsigned long) port->xmit_buf); - port->xmit_buf = NULL; - } - - /* Select port */ - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CAR, port_No(port)); - - tty = port->port.tty; - if (tty == NULL || C_HUPCL(tty)) { - /* Drop DTR */ - sx_out(bp, CD186x_MSVDTR, 0); - } - spin_unlock_irqrestore(&bp->lock, flags); - /* Reset port */ - sx_wait_CCR(bp); - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CCR, CCR_SOFTRESET); - /* Disable all interrupts from this port */ - port->IER = 0; - sx_out(bp, CD186x_IER, port->IER); - spin_unlock_irqrestore(&bp->lock, flags); - if (tty) - set_bit(TTY_IO_ERROR, &tty->flags); - port->port.flags &= ~ASYNC_INITIALIZED; - - if (!bp->count) - sx_shutdown_board(bp); - func_exit(); -} - - -static int block_til_ready(struct tty_struct *tty, struct file *filp, - struct specialix_port *port) -{ - DECLARE_WAITQUEUE(wait, current); - struct specialix_board *bp = port_Board(port); - int retval; - int do_clocal = 0; - int CD; - unsigned long flags; - - func_enter(); - - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) { - interruptible_sleep_on(&port->port.close_wait); - if (port->port.flags & ASYNC_HUP_NOTIFY) { - func_exit(); - return -EAGAIN; - } else { - func_exit(); - return -ERESTARTSYS; - } - } - - /* - * If non-blocking mode is set, or the port is not enabled, - * then make the check up front and then exit. - */ - if ((filp->f_flags & O_NONBLOCK) || - (tty->flags & (1 << TTY_IO_ERROR))) { - port->port.flags |= ASYNC_NORMAL_ACTIVE; - func_exit(); - return 0; - } - - if (C_CLOCAL(tty)) - do_clocal = 1; - - /* - * Block waiting for the carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, info->count is dropped by one, so that - * rs_close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - retval = 0; - add_wait_queue(&port->port.open_wait, &wait); - spin_lock_irqsave(&port->lock, flags); - if (!tty_hung_up_p(filp)) - port->port.count--; - spin_unlock_irqrestore(&port->lock, flags); - port->port.blocked_open++; - while (1) { - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CAR, port_No(port)); - CD = sx_in(bp, CD186x_MSVR) & MSVR_CD; - if (sx_crtscts(tty)) { - /* Activate RTS */ - port->MSVR |= MSVR_DTR; /* WTF? */ - sx_out(bp, CD186x_MSVR, port->MSVR); - } else { - /* Activate DTR */ - port->MSVR |= MSVR_DTR; - sx_out(bp, CD186x_MSVR, port->MSVR); - } - spin_unlock_irqrestore(&bp->lock, flags); - set_current_state(TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || - !(port->port.flags & ASYNC_INITIALIZED)) { - if (port->port.flags & ASYNC_HUP_NOTIFY) - retval = -EAGAIN; - else - retval = -ERESTARTSYS; - break; - } - if (!(port->port.flags & ASYNC_CLOSING) && - (do_clocal || CD)) - break; - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - tty_unlock(); - schedule(); - tty_lock(); - } - - set_current_state(TASK_RUNNING); - remove_wait_queue(&port->port.open_wait, &wait); - spin_lock_irqsave(&port->lock, flags); - if (!tty_hung_up_p(filp)) - port->port.count++; - port->port.blocked_open--; - spin_unlock_irqrestore(&port->lock, flags); - if (retval) { - func_exit(); - return retval; - } - - port->port.flags |= ASYNC_NORMAL_ACTIVE; - func_exit(); - return 0; -} - - -static int sx_open(struct tty_struct *tty, struct file *filp) -{ - int board; - int error; - struct specialix_port *port; - struct specialix_board *bp; - int i; - unsigned long flags; - - func_enter(); - - board = SX_BOARD(tty->index); - - if (board >= SX_NBOARD || !(sx_board[board].flags & SX_BOARD_PRESENT)) { - func_exit(); - return -ENODEV; - } - - bp = &sx_board[board]; - port = sx_port + board * SX_NPORT + SX_PORT(tty->index); - port->overrun = 0; - for (i = 0; i < 10; i++) - port->hits[i] = 0; - - dprintk(SX_DEBUG_OPEN, - "Board = %d, bp = %p, port = %p, portno = %d.\n", - board, bp, port, SX_PORT(tty->index)); - - if (sx_paranoia_check(port, tty->name, "sx_open")) { - func_enter(); - return -ENODEV; - } - - error = sx_setup_board(bp); - if (error) { - func_exit(); - return error; - } - - spin_lock_irqsave(&bp->lock, flags); - port->port.count++; - bp->count++; - tty->driver_data = port; - port->port.tty = tty; - spin_unlock_irqrestore(&bp->lock, flags); - - error = sx_setup_port(bp, port); - if (error) { - func_enter(); - return error; - } - - error = block_til_ready(tty, filp, port); - if (error) { - func_enter(); - return error; - } - - func_exit(); - return 0; -} - -static void sx_flush_buffer(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - unsigned long flags; - struct specialix_board *bp; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) { - func_exit(); - return; - } - - bp = port_Board(port); - spin_lock_irqsave(&port->lock, flags); - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore(&port->lock, flags); - tty_wakeup(tty); - - func_exit(); -} - -static void sx_close(struct tty_struct *tty, struct file *filp) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - unsigned long flags; - unsigned long timeout; - - func_enter(); - if (!port || sx_paranoia_check(port, tty->name, "close")) { - func_exit(); - return; - } - spin_lock_irqsave(&port->lock, flags); - - if (tty_hung_up_p(filp)) { - spin_unlock_irqrestore(&port->lock, flags); - func_exit(); - return; - } - - bp = port_Board(port); - if (tty->count == 1 && port->port.count != 1) { - printk(KERN_ERR "sx%d: sx_close: bad port count;" - " tty->count is 1, port count is %d\n", - board_No(bp), port->port.count); - port->port.count = 1; - } - - if (port->port.count > 1) { - port->port.count--; - bp->count--; - - spin_unlock_irqrestore(&port->lock, flags); - - func_exit(); - return; - } - port->port.flags |= ASYNC_CLOSING; - /* - * Now we wait for the transmit buffer to clear; and we notify - * the line discipline to only process XON/XOFF characters. - */ - tty->closing = 1; - spin_unlock_irqrestore(&port->lock, flags); - dprintk(SX_DEBUG_OPEN, "Closing\n"); - if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) - tty_wait_until_sent(tty, port->port.closing_wait); - /* - * At this point we stop accepting input. To do this, we - * disable the receive line status interrupts, and tell the - * interrupt driver to stop checking the data ready bit in the - * line status register. - */ - dprintk(SX_DEBUG_OPEN, "Closed\n"); - port->IER &= ~IER_RXD; - if (port->port.flags & ASYNC_INITIALIZED) { - port->IER &= ~IER_TXRDY; - port->IER |= IER_TXEMPTY; - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CAR, port_No(port)); - sx_out(bp, CD186x_IER, port->IER); - spin_unlock_irqrestore(&bp->lock, flags); - /* - * Before we drop DTR, make sure the UART transmitter - * has completely drained; this is especially - * important if there is a transmit FIFO! - */ - timeout = jiffies+HZ; - while (port->IER & IER_TXEMPTY) { - set_current_state(TASK_INTERRUPTIBLE); - msleep_interruptible(jiffies_to_msecs(port->timeout)); - if (time_after(jiffies, timeout)) { - printk(KERN_INFO "Timeout waiting for close\n"); - break; - } - } - - } - - if (--bp->count < 0) { - printk(KERN_ERR - "sx%d: sx_shutdown_port: bad board count: %d port: %d\n", - board_No(bp), bp->count, tty->index); - bp->count = 0; - } - if (--port->port.count < 0) { - printk(KERN_ERR - "sx%d: sx_close: bad port count for tty%d: %d\n", - board_No(bp), port_No(port), port->port.count); - port->port.count = 0; - } - - sx_shutdown_port(bp, port); - sx_flush_buffer(tty); - tty_ldisc_flush(tty); - spin_lock_irqsave(&port->lock, flags); - tty->closing = 0; - port->port.tty = NULL; - spin_unlock_irqrestore(&port->lock, flags); - if (port->port.blocked_open) { - if (port->port.close_delay) - msleep_interruptible( - jiffies_to_msecs(port->port.close_delay)); - wake_up_interruptible(&port->port.open_wait); - } - port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - wake_up_interruptible(&port->port.close_wait); - - func_exit(); -} - - -static int sx_write(struct tty_struct *tty, - const unsigned char *buf, int count) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - int c, total = 0; - unsigned long flags; - - func_enter(); - if (sx_paranoia_check(port, tty->name, "sx_write")) { - func_exit(); - return 0; - } - - bp = port_Board(port); - - if (!port->xmit_buf) { - func_exit(); - return 0; - } - - while (1) { - spin_lock_irqsave(&port->lock, flags); - c = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, - SERIAL_XMIT_SIZE - port->xmit_head)); - if (c <= 0) { - spin_unlock_irqrestore(&port->lock, flags); - break; - } - memcpy(port->xmit_buf + port->xmit_head, buf, c); - port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1); - port->xmit_cnt += c; - spin_unlock_irqrestore(&port->lock, flags); - - buf += c; - count -= c; - total += c; - } - - spin_lock_irqsave(&bp->lock, flags); - if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped && - !(port->IER & IER_TXRDY)) { - port->IER |= IER_TXRDY; - sx_out(bp, CD186x_CAR, port_No(port)); - sx_out(bp, CD186x_IER, port->IER); - } - spin_unlock_irqrestore(&bp->lock, flags); - func_exit(); - - return total; -} - - -static int sx_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct specialix_port *port = tty->driver_data; - unsigned long flags; - struct specialix_board *bp; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_put_char")) { - func_exit(); - return 0; - } - dprintk(SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf); - if (!port->xmit_buf) { - func_exit(); - return 0; - } - bp = port_Board(port); - spin_lock_irqsave(&port->lock, flags); - - dprintk(SX_DEBUG_TX, "xmit_cnt: %d xmit_buf: %p\n", - port->xmit_cnt, port->xmit_buf); - if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1 || !port->xmit_buf) { - spin_unlock_irqrestore(&port->lock, flags); - dprintk(SX_DEBUG_TX, "Exit size\n"); - func_exit(); - return 0; - } - dprintk(SX_DEBUG_TX, "Handle xmit: %p %p\n", port, port->xmit_buf); - port->xmit_buf[port->xmit_head++] = ch; - port->xmit_head &= SERIAL_XMIT_SIZE - 1; - port->xmit_cnt++; - spin_unlock_irqrestore(&port->lock, flags); - - func_exit(); - return 1; -} - - -static void sx_flush_chars(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - unsigned long flags; - struct specialix_board *bp = port_Board(port); - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_flush_chars")) { - func_exit(); - return; - } - if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || - !port->xmit_buf) { - func_exit(); - return; - } - spin_lock_irqsave(&bp->lock, flags); - port->IER |= IER_TXRDY; - sx_out(port_Board(port), CD186x_CAR, port_No(port)); - sx_out(port_Board(port), CD186x_IER, port->IER); - spin_unlock_irqrestore(&bp->lock, flags); - - func_exit(); -} - - -static int sx_write_room(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - int ret; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_write_room")) { - func_exit(); - return 0; - } - - ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; - if (ret < 0) - ret = 0; - - func_exit(); - return ret; -} - - -static int sx_chars_in_buffer(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_chars_in_buffer")) { - func_exit(); - return 0; - } - func_exit(); - return port->xmit_cnt; -} - -static int sx_tiocmget(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - unsigned char status; - unsigned int result; - unsigned long flags; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, __func__)) { - func_exit(); - return -ENODEV; - } - - bp = port_Board(port); - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CAR, port_No(port)); - status = sx_in(bp, CD186x_MSVR); - spin_unlock_irqrestore(&bp->lock, flags); - dprintk(SX_DEBUG_INIT, "Got msvr[%d] = %02x, car = %d.\n", - port_No(port), status, sx_in(bp, CD186x_CAR)); - dprintk(SX_DEBUG_INIT, "sx_port = %p, port = %p\n", sx_port, port); - if (sx_crtscts(port->port.tty)) { - result = TIOCM_DTR | TIOCM_DSR - | ((status & MSVR_DTR) ? TIOCM_RTS : 0) - | ((status & MSVR_CD) ? TIOCM_CAR : 0) - | ((status & MSVR_CTS) ? TIOCM_CTS : 0); - } else { - result = TIOCM_RTS | TIOCM_DSR - | ((status & MSVR_DTR) ? TIOCM_DTR : 0) - | ((status & MSVR_CD) ? TIOCM_CAR : 0) - | ((status & MSVR_CTS) ? TIOCM_CTS : 0); - } - - func_exit(); - - return result; -} - - -static int sx_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct specialix_port *port = tty->driver_data; - unsigned long flags; - struct specialix_board *bp; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, __func__)) { - func_exit(); - return -ENODEV; - } - - bp = port_Board(port); - - spin_lock_irqsave(&port->lock, flags); - if (sx_crtscts(port->port.tty)) { - if (set & TIOCM_RTS) - port->MSVR |= MSVR_DTR; - } else { - if (set & TIOCM_DTR) - port->MSVR |= MSVR_DTR; - } - if (sx_crtscts(port->port.tty)) { - if (clear & TIOCM_RTS) - port->MSVR &= ~MSVR_DTR; - } else { - if (clear & TIOCM_DTR) - port->MSVR &= ~MSVR_DTR; - } - spin_lock(&bp->lock); - sx_out(bp, CD186x_CAR, port_No(port)); - sx_out(bp, CD186x_MSVR, port->MSVR); - spin_unlock(&bp->lock); - spin_unlock_irqrestore(&port->lock, flags); - func_exit(); - return 0; -} - - -static int sx_send_break(struct tty_struct *tty, int length) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp = port_Board(port); - unsigned long flags; - - func_enter(); - if (length == 0 || length == -1) - return -EOPNOTSUPP; - - spin_lock_irqsave(&port->lock, flags); - port->break_length = SPECIALIX_TPS / HZ * length; - port->COR2 |= COR2_ETC; - port->IER |= IER_TXRDY; - spin_lock(&bp->lock); - sx_out(bp, CD186x_CAR, port_No(port)); - sx_out(bp, CD186x_COR2, port->COR2); - sx_out(bp, CD186x_IER, port->IER); - spin_unlock(&bp->lock); - spin_unlock_irqrestore(&port->lock, flags); - sx_wait_CCR(bp); - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CCR, CCR_CORCHG2); - spin_unlock_irqrestore(&bp->lock, flags); - sx_wait_CCR(bp); - - func_exit(); - return 0; -} - - -static int sx_set_serial_info(struct specialix_port *port, - struct serial_struct __user *newinfo) -{ - struct serial_struct tmp; - struct specialix_board *bp = port_Board(port); - int change_speed; - - func_enter(); - - if (copy_from_user(&tmp, newinfo, sizeof(tmp))) { - func_enter(); - return -EFAULT; - } - - mutex_lock(&port->port.mutex); - change_speed = ((port->port.flags & ASYNC_SPD_MASK) != - (tmp.flags & ASYNC_SPD_MASK)); - change_speed |= (tmp.custom_divisor != port->custom_divisor); - - if (!capable(CAP_SYS_ADMIN)) { - if ((tmp.close_delay != port->port.close_delay) || - (tmp.closing_wait != port->port.closing_wait) || - ((tmp.flags & ~ASYNC_USR_MASK) != - (port->port.flags & ~ASYNC_USR_MASK))) { - func_exit(); - mutex_unlock(&port->port.mutex); - return -EPERM; - } - port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | - (tmp.flags & ASYNC_USR_MASK)); - port->custom_divisor = tmp.custom_divisor; - } else { - port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | - (tmp.flags & ASYNC_FLAGS)); - port->port.close_delay = tmp.close_delay; - port->port.closing_wait = tmp.closing_wait; - port->custom_divisor = tmp.custom_divisor; - } - if (change_speed) - sx_change_speed(bp, port); - - func_exit(); - mutex_unlock(&port->port.mutex); - return 0; -} - - -static int sx_get_serial_info(struct specialix_port *port, - struct serial_struct __user *retinfo) -{ - struct serial_struct tmp; - struct specialix_board *bp = port_Board(port); - - func_enter(); - - memset(&tmp, 0, sizeof(tmp)); - mutex_lock(&port->port.mutex); - tmp.type = PORT_CIRRUS; - tmp.line = port - sx_port; - tmp.port = bp->base; - tmp.irq = bp->irq; - tmp.flags = port->port.flags; - tmp.baud_base = (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC; - tmp.close_delay = port->port.close_delay * HZ/100; - tmp.closing_wait = port->port.closing_wait * HZ/100; - tmp.custom_divisor = port->custom_divisor; - tmp.xmit_fifo_size = CD186x_NFIFO; - mutex_unlock(&port->port.mutex); - if (copy_to_user(retinfo, &tmp, sizeof(tmp))) { - func_exit(); - return -EFAULT; - } - - func_exit(); - return 0; -} - - -static int sx_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - struct specialix_port *port = tty->driver_data; - void __user *argp = (void __user *)arg; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_ioctl")) { - func_exit(); - return -ENODEV; - } - - switch (cmd) { - case TIOCGSERIAL: - func_exit(); - return sx_get_serial_info(port, argp); - case TIOCSSERIAL: - func_exit(); - return sx_set_serial_info(port, argp); - default: - func_exit(); - return -ENOIOCTLCMD; - } - func_exit(); - return 0; -} - - -static void sx_throttle(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - unsigned long flags; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_throttle")) { - func_exit(); - return; - } - - bp = port_Board(port); - - /* Use DTR instead of RTS ! */ - if (sx_crtscts(tty)) - port->MSVR &= ~MSVR_DTR; - else { - /* Auch!!! I think the system shouldn't call this then. */ - /* Or maybe we're supposed (allowed?) to do our side of hw - handshake anyway, even when hardware handshake is off. - When you see this in your logs, please report.... */ - printk(KERN_ERR - "sx%d: Need to throttle, but can't (hardware hs is off)\n", - port_No(port)); - } - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CAR, port_No(port)); - spin_unlock_irqrestore(&bp->lock, flags); - if (I_IXOFF(tty)) { - sx_wait_CCR(bp); - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CCR, CCR_SSCH2); - spin_unlock_irqrestore(&bp->lock, flags); - sx_wait_CCR(bp); - } - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_MSVR, port->MSVR); - spin_unlock_irqrestore(&bp->lock, flags); - - func_exit(); -} - - -static void sx_unthrottle(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - unsigned long flags; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_unthrottle")) { - func_exit(); - return; - } - - bp = port_Board(port); - - spin_lock_irqsave(&port->lock, flags); - /* XXXX Use DTR INSTEAD???? */ - if (sx_crtscts(tty)) - port->MSVR |= MSVR_DTR; - /* Else clause: see remark in "sx_throttle"... */ - spin_lock(&bp->lock); - sx_out(bp, CD186x_CAR, port_No(port)); - spin_unlock(&bp->lock); - if (I_IXOFF(tty)) { - spin_unlock_irqrestore(&port->lock, flags); - sx_wait_CCR(bp); - spin_lock_irqsave(&bp->lock, flags); - sx_out(bp, CD186x_CCR, CCR_SSCH1); - spin_unlock_irqrestore(&bp->lock, flags); - sx_wait_CCR(bp); - spin_lock_irqsave(&port->lock, flags); - } - spin_lock(&bp->lock); - sx_out(bp, CD186x_MSVR, port->MSVR); - spin_unlock(&bp->lock); - spin_unlock_irqrestore(&port->lock, flags); - - func_exit(); -} - - -static void sx_stop(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - unsigned long flags; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_stop")) { - func_exit(); - return; - } - - bp = port_Board(port); - - spin_lock_irqsave(&port->lock, flags); - port->IER &= ~IER_TXRDY; - spin_lock(&bp->lock); - sx_out(bp, CD186x_CAR, port_No(port)); - sx_out(bp, CD186x_IER, port->IER); - spin_unlock(&bp->lock); - spin_unlock_irqrestore(&port->lock, flags); - - func_exit(); -} - - -static void sx_start(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - unsigned long flags; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_start")) { - func_exit(); - return; - } - - bp = port_Board(port); - - spin_lock_irqsave(&port->lock, flags); - if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) { - port->IER |= IER_TXRDY; - spin_lock(&bp->lock); - sx_out(bp, CD186x_CAR, port_No(port)); - sx_out(bp, CD186x_IER, port->IER); - spin_unlock(&bp->lock); - } - spin_unlock_irqrestore(&port->lock, flags); - - func_exit(); -} - -static void sx_hangup(struct tty_struct *tty) -{ - struct specialix_port *port = tty->driver_data; - struct specialix_board *bp; - unsigned long flags; - - func_enter(); - - if (sx_paranoia_check(port, tty->name, "sx_hangup")) { - func_exit(); - return; - } - - bp = port_Board(port); - - sx_shutdown_port(bp, port); - spin_lock_irqsave(&port->lock, flags); - bp->count -= port->port.count; - if (bp->count < 0) { - printk(KERN_ERR - "sx%d: sx_hangup: bad board count: %d port: %d\n", - board_No(bp), bp->count, tty->index); - bp->count = 0; - } - port->port.count = 0; - port->port.flags &= ~ASYNC_NORMAL_ACTIVE; - port->port.tty = NULL; - spin_unlock_irqrestore(&port->lock, flags); - wake_up_interruptible(&port->port.open_wait); - - func_exit(); -} - - -static void sx_set_termios(struct tty_struct *tty, - struct ktermios *old_termios) -{ - struct specialix_port *port = tty->driver_data; - unsigned long flags; - struct specialix_board *bp; - - if (sx_paranoia_check(port, tty->name, "sx_set_termios")) - return; - - bp = port_Board(port); - spin_lock_irqsave(&port->lock, flags); - sx_change_speed(port_Board(port), port); - spin_unlock_irqrestore(&port->lock, flags); - - if ((old_termios->c_cflag & CRTSCTS) && - !(tty->termios->c_cflag & CRTSCTS)) { - tty->hw_stopped = 0; - sx_start(tty); - } -} - -static const struct tty_operations sx_ops = { - .open = sx_open, - .close = sx_close, - .write = sx_write, - .put_char = sx_put_char, - .flush_chars = sx_flush_chars, - .write_room = sx_write_room, - .chars_in_buffer = sx_chars_in_buffer, - .flush_buffer = sx_flush_buffer, - .ioctl = sx_ioctl, - .throttle = sx_throttle, - .unthrottle = sx_unthrottle, - .set_termios = sx_set_termios, - .stop = sx_stop, - .start = sx_start, - .hangup = sx_hangup, - .tiocmget = sx_tiocmget, - .tiocmset = sx_tiocmset, - .break_ctl = sx_send_break, -}; - -static int sx_init_drivers(void) -{ - int error; - int i; - - func_enter(); - - specialix_driver = alloc_tty_driver(SX_NBOARD * SX_NPORT); - if (!specialix_driver) { - printk(KERN_ERR "sx: Couldn't allocate tty_driver.\n"); - func_exit(); - return 1; - } - - specialix_driver->owner = THIS_MODULE; - specialix_driver->name = "ttyW"; - specialix_driver->major = SPECIALIX_NORMAL_MAJOR; - specialix_driver->type = TTY_DRIVER_TYPE_SERIAL; - specialix_driver->subtype = SERIAL_TYPE_NORMAL; - specialix_driver->init_termios = tty_std_termios; - specialix_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - specialix_driver->init_termios.c_ispeed = 9600; - specialix_driver->init_termios.c_ospeed = 9600; - specialix_driver->flags = TTY_DRIVER_REAL_RAW | - TTY_DRIVER_HARDWARE_BREAK; - tty_set_operations(specialix_driver, &sx_ops); - - error = tty_register_driver(specialix_driver); - if (error) { - put_tty_driver(specialix_driver); - printk(KERN_ERR - "sx: Couldn't register specialix IO8+ driver, error = %d\n", - error); - func_exit(); - return 1; - } - memset(sx_port, 0, sizeof(sx_port)); - for (i = 0; i < SX_NPORT * SX_NBOARD; i++) { - sx_port[i].magic = SPECIALIX_MAGIC; - tty_port_init(&sx_port[i].port); - spin_lock_init(&sx_port[i].lock); - } - - func_exit(); - return 0; -} - -static void sx_release_drivers(void) -{ - func_enter(); - - tty_unregister_driver(specialix_driver); - put_tty_driver(specialix_driver); - func_exit(); -} - -/* - * This routine must be called by kernel at boot time - */ -static int __init specialix_init(void) -{ - int i; - int found = 0; - - func_enter(); - - printk(KERN_INFO "sx: Specialix IO8+ driver v" VERSION ", (c) R.E.Wolff 1997/1998.\n"); - printk(KERN_INFO "sx: derived from work (c) D.Gorodchanin 1994-1996.\n"); - if (sx_rtscts) - printk(KERN_INFO - "sx: DTR/RTS pin is RTS when CRTSCTS is on.\n"); - else - printk(KERN_INFO "sx: DTR/RTS pin is always RTS.\n"); - - for (i = 0; i < SX_NBOARD; i++) - spin_lock_init(&sx_board[i].lock); - - if (sx_init_drivers()) { - func_exit(); - return -EIO; - } - - for (i = 0; i < SX_NBOARD; i++) - if (sx_board[i].base && !sx_probe(&sx_board[i])) - found++; - -#ifdef CONFIG_PCI - { - struct pci_dev *pdev = NULL; - - i = 0; - while (i < SX_NBOARD) { - if (sx_board[i].flags & SX_BOARD_PRESENT) { - i++; - continue; - } - pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, - PCI_DEVICE_ID_SPECIALIX_IO8, pdev); - if (!pdev) - break; - - if (pci_enable_device(pdev)) - continue; - - sx_board[i].irq = pdev->irq; - - sx_board[i].base = pci_resource_start(pdev, 2); - - sx_board[i].flags |= SX_BOARD_IS_PCI; - if (!sx_probe(&sx_board[i])) - found++; - } - /* May exit pci_get sequence early with lots of boards */ - if (pdev != NULL) - pci_dev_put(pdev); - } -#endif - - if (!found) { - sx_release_drivers(); - printk(KERN_INFO "sx: No specialix IO8+ boards detected.\n"); - func_exit(); - return -EIO; - } - - func_exit(); - return 0; -} - -static int iobase[SX_NBOARD] = {0,}; -static int irq[SX_NBOARD] = {0,}; - -module_param_array(iobase, int, NULL, 0); -module_param_array(irq, int, NULL, 0); -module_param(sx_debug, int, 0); -module_param(sx_rtscts, int, 0); -module_param(sx_rxfifo, int, 0); - -/* - * You can setup up to 4 boards. - * by specifying "iobase=0xXXX,0xXXX ..." as insmod parameter. - * You should specify the IRQs too in that case "irq=....,...". - * - * More than 4 boards in one computer is not possible, as the card can - * only use 4 different interrupts. - * - */ -static int __init specialix_init_module(void) -{ - int i; - - func_enter(); - - if (iobase[0] || iobase[1] || iobase[2] || iobase[3]) { - for (i = 0; i < SX_NBOARD; i++) { - sx_board[i].base = iobase[i]; - sx_board[i].irq = irq[i]; - sx_board[i].count = 0; - } - } - - func_exit(); - - return specialix_init(); -} - -static void __exit specialix_exit_module(void) -{ - int i; - - func_enter(); - - sx_release_drivers(); - for (i = 0; i < SX_NBOARD; i++) - if (sx_board[i].flags & SX_BOARD_PRESENT) - sx_release_io_range(&sx_board[i]); - func_exit(); -} - -static struct pci_device_id specialx_pci_tbl[] __devinitdata __used = { - { PCI_DEVICE(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_IO8) }, - { } -}; -MODULE_DEVICE_TABLE(pci, specialx_pci_tbl); - -module_init(specialix_init_module); -module_exit(specialix_exit_module); - -MODULE_LICENSE("GPL"); -MODULE_ALIAS_CHARDEV_MAJOR(SPECIALIX_NORMAL_MAJOR); diff --git a/drivers/char/specialix_io8.h b/drivers/char/specialix_io8.h deleted file mode 100644 index c63005274d9b..000000000000 --- a/drivers/char/specialix_io8.h +++ /dev/null @@ -1,140 +0,0 @@ -/* - * linux/drivers/char/specialix_io8.h -- - * Specialix IO8+ multiport serial driver. - * - * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl) - * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) - * - * - * Specialix pays for the development and support of this driver. - * Please DO contact io8-linux@specialix.co.uk if you require - * support. - * - * This driver was developped in the BitWizard linux device - * driver service. If you require a linux device driver for your - * product, please contact devices@BitWizard.nl for a quote. - * - * This code is firmly based on the riscom/8 serial driver, - * written by Dmitry Gorodchanin. The specialix IO8+ card - * programming information was obtained from the CL-CD1865 Data - * Book, and Specialix document number 6200059: IO8+ Hardware - * Functional Specification. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, - * USA. - * */ - -#ifndef __LINUX_SPECIALIX_H -#define __LINUX_SPECIALIX_H - -#include - -#ifdef __KERNEL__ - -/* You can have max 4 ISA cards in one PC, and I recommend not much -more than a few PCI versions of the card. */ - -#define SX_NBOARD 8 - -/* NOTE: Specialix decoder recognizes 4 addresses, but only two are used.... */ -#define SX_IO_SPACE 4 -/* The PCI version decodes 8 addresses, but still only 2 are used. */ -#define SX_PCI_IO_SPACE 8 - -/* eight ports per board. */ -#define SX_NPORT 8 -#define SX_BOARD(line) ((line) / SX_NPORT) -#define SX_PORT(line) ((line) & (SX_NPORT - 1)) - - -#define SX_DATA_REG 0 /* Base+0 : Data register */ -#define SX_ADDR_REG 1 /* base+1 : Address register. */ - -#define MHz *1000000 /* I'm ashamed of myself. */ - -/* On-board oscillator frequency */ -#define SX_OSCFREQ (25 MHz/2) -/* There is a 25MHz crystal on the board, but the chip is in /2 mode */ - - -/* Ticks per sec. Used for setting receiver timeout and break length */ -#define SPECIALIX_TPS 4000 - -/* Yeah, after heavy testing I decided it must be 6. - * Sure, You can change it if needed. - */ -#define SPECIALIX_RXFIFO 6 /* Max. receiver FIFO size (1-8) */ - -#define SPECIALIX_MAGIC 0x0907 - -#define SX_CCR_TIMEOUT 10000 /* CCR timeout. You may need to wait upto - 10 milliseconds before the internal - processor is available again after - you give it a command */ - -#define SX_IOBASE1 0x100 -#define SX_IOBASE2 0x180 -#define SX_IOBASE3 0x250 -#define SX_IOBASE4 0x260 - -struct specialix_board { - unsigned long flags; - unsigned short base; - unsigned char irq; - //signed char count; - int count; - unsigned char DTR; - int reg; - spinlock_t lock; -}; - -#define SX_BOARD_PRESENT 0x00000001 -#define SX_BOARD_ACTIVE 0x00000002 -#define SX_BOARD_IS_PCI 0x00000004 - - -struct specialix_port { - int magic; - struct tty_port port; - int baud_base; - int flags; - int timeout; - unsigned char * xmit_buf; - int custom_divisor; - int xmit_head; - int xmit_tail; - int xmit_cnt; - short wakeup_chars; - short break_length; - unsigned char mark_mask; - unsigned char IER; - unsigned char MSVR; - unsigned char COR2; - unsigned long overrun; - unsigned long hits[10]; - spinlock_t lock; -}; - -#endif /* __KERNEL__ */ -#endif /* __LINUX_SPECIALIX_H */ - - - - - - - - - diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c deleted file mode 100644 index 4fff5cd3b163..000000000000 --- a/drivers/char/stallion.c +++ /dev/null @@ -1,4651 +0,0 @@ -/*****************************************************************************/ - -/* - * stallion.c -- stallion multiport serial driver. - * - * Copyright (C) 1996-1999 Stallion Technologies - * Copyright (C) 1994-1996 Greg Ungerer. - * - * This code is loosely based on the Linux serial driver, written by - * Linus Torvalds, Theodore T'so and others. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -/*****************************************************************************/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - -/*****************************************************************************/ - -/* - * Define different board types. Use the standard Stallion "assigned" - * board numbers. Boards supported in this driver are abbreviated as - * EIO = EasyIO and ECH = EasyConnection 8/32. - */ -#define BRD_EASYIO 20 -#define BRD_ECH 21 -#define BRD_ECHMC 22 -#define BRD_ECHPCI 26 -#define BRD_ECH64PCI 27 -#define BRD_EASYIOPCI 28 - -struct stlconf { - unsigned int brdtype; - int ioaddr1; - int ioaddr2; - unsigned long memaddr; - int irq; - int irqtype; -}; - -static unsigned int stl_nrbrds; - -/*****************************************************************************/ - -/* - * Define some important driver characteristics. Device major numbers - * allocated as per Linux Device Registry. - */ -#ifndef STL_SIOMEMMAJOR -#define STL_SIOMEMMAJOR 28 -#endif -#ifndef STL_SERIALMAJOR -#define STL_SERIALMAJOR 24 -#endif -#ifndef STL_CALLOUTMAJOR -#define STL_CALLOUTMAJOR 25 -#endif - -/* - * Set the TX buffer size. Bigger is better, but we don't want - * to chew too much memory with buffers! - */ -#define STL_TXBUFLOW 512 -#define STL_TXBUFSIZE 4096 - -/*****************************************************************************/ - -/* - * Define our local driver identity first. Set up stuff to deal with - * all the local structures required by a serial tty driver. - */ -static char *stl_drvtitle = "Stallion Multiport Serial Driver"; -static char *stl_drvname = "stallion"; -static char *stl_drvversion = "5.6.0"; - -static struct tty_driver *stl_serial; - -/* - * Define a local default termios struct. All ports will be created - * with this termios initially. Basically all it defines is a raw port - * at 9600, 8 data bits, 1 stop bit. - */ -static struct ktermios stl_deftermios = { - .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), - .c_cc = INIT_C_CC, - .c_ispeed = 9600, - .c_ospeed = 9600, -}; - -/* - * Define global place to put buffer overflow characters. - */ -static char stl_unwanted[SC26198_RXFIFOSIZE]; - -/*****************************************************************************/ - -static DEFINE_MUTEX(stl_brdslock); -static struct stlbrd *stl_brds[STL_MAXBRDS]; - -static const struct tty_port_operations stl_port_ops; - -/* - * Per board state flags. Used with the state field of the board struct. - * Not really much here! - */ -#define BRD_FOUND 0x1 -#define STL_PROBED 0x2 - - -/* - * Define the port structure istate flags. These set of flags are - * modified at interrupt time - so setting and reseting them needs - * to be atomic. Use the bit clear/setting routines for this. - */ -#define ASYI_TXBUSY 1 -#define ASYI_TXLOW 2 -#define ASYI_TXFLOWED 3 - -/* - * Define an array of board names as printable strings. Handy for - * referencing boards when printing trace and stuff. - */ -static char *stl_brdnames[] = { - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - "EasyIO", - "EC8/32-AT", - "EC8/32-MC", - NULL, - NULL, - NULL, - "EC8/32-PCI", - "EC8/64-PCI", - "EasyIO-PCI", -}; - -/*****************************************************************************/ - -/* - * Define some string labels for arguments passed from the module - * load line. These allow for easy board definitions, and easy - * modification of the io, memory and irq resoucres. - */ -static unsigned int stl_nargs; -static char *board0[4]; -static char *board1[4]; -static char *board2[4]; -static char *board3[4]; - -static char **stl_brdsp[] = { - (char **) &board0, - (char **) &board1, - (char **) &board2, - (char **) &board3 -}; - -/* - * Define a set of common board names, and types. This is used to - * parse any module arguments. - */ - -static struct { - char *name; - int type; -} stl_brdstr[] = { - { "easyio", BRD_EASYIO }, - { "eio", BRD_EASYIO }, - { "20", BRD_EASYIO }, - { "ec8/32", BRD_ECH }, - { "ec8/32-at", BRD_ECH }, - { "ec8/32-isa", BRD_ECH }, - { "ech", BRD_ECH }, - { "echat", BRD_ECH }, - { "21", BRD_ECH }, - { "ec8/32-mc", BRD_ECHMC }, - { "ec8/32-mca", BRD_ECHMC }, - { "echmc", BRD_ECHMC }, - { "echmca", BRD_ECHMC }, - { "22", BRD_ECHMC }, - { "ec8/32-pc", BRD_ECHPCI }, - { "ec8/32-pci", BRD_ECHPCI }, - { "26", BRD_ECHPCI }, - { "ec8/64-pc", BRD_ECH64PCI }, - { "ec8/64-pci", BRD_ECH64PCI }, - { "ech-pci", BRD_ECH64PCI }, - { "echpci", BRD_ECH64PCI }, - { "echpc", BRD_ECH64PCI }, - { "27", BRD_ECH64PCI }, - { "easyio-pc", BRD_EASYIOPCI }, - { "easyio-pci", BRD_EASYIOPCI }, - { "eio-pci", BRD_EASYIOPCI }, - { "eiopci", BRD_EASYIOPCI }, - { "28", BRD_EASYIOPCI }, -}; - -/* - * Define the module agruments. - */ - -module_param_array(board0, charp, &stl_nargs, 0); -MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,ioaddr2][,irq]]"); -module_param_array(board1, charp, &stl_nargs, 0); -MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,ioaddr2][,irq]]"); -module_param_array(board2, charp, &stl_nargs, 0); -MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,ioaddr2][,irq]]"); -module_param_array(board3, charp, &stl_nargs, 0); -MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,ioaddr2][,irq]]"); - -/*****************************************************************************/ - -/* - * Hardware ID bits for the EasyIO and ECH boards. These defines apply - * to the directly accessible io ports of these boards (not the uarts - - * they are in cd1400.h and sc26198.h). - */ -#define EIO_8PORTRS 0x04 -#define EIO_4PORTRS 0x05 -#define EIO_8PORTDI 0x00 -#define EIO_8PORTM 0x06 -#define EIO_MK3 0x03 -#define EIO_IDBITMASK 0x07 - -#define EIO_BRDMASK 0xf0 -#define ID_BRD4 0x10 -#define ID_BRD8 0x20 -#define ID_BRD16 0x30 - -#define EIO_INTRPEND 0x08 -#define EIO_INTEDGE 0x00 -#define EIO_INTLEVEL 0x08 -#define EIO_0WS 0x10 - -#define ECH_ID 0xa0 -#define ECH_IDBITMASK 0xe0 -#define ECH_BRDENABLE 0x08 -#define ECH_BRDDISABLE 0x00 -#define ECH_INTENABLE 0x01 -#define ECH_INTDISABLE 0x00 -#define ECH_INTLEVEL 0x02 -#define ECH_INTEDGE 0x00 -#define ECH_INTRPEND 0x01 -#define ECH_BRDRESET 0x01 - -#define ECHMC_INTENABLE 0x01 -#define ECHMC_BRDRESET 0x02 - -#define ECH_PNLSTATUS 2 -#define ECH_PNL16PORT 0x20 -#define ECH_PNLIDMASK 0x07 -#define ECH_PNLXPID 0x40 -#define ECH_PNLINTRPEND 0x80 - -#define ECH_ADDR2MASK 0x1e0 - -/* - * Define the vector mapping bits for the programmable interrupt board - * hardware. These bits encode the interrupt for the board to use - it - * is software selectable (except the EIO-8M). - */ -static unsigned char stl_vecmap[] = { - 0xff, 0xff, 0xff, 0x04, 0x06, 0x05, 0xff, 0x07, - 0xff, 0xff, 0x00, 0x02, 0x01, 0xff, 0xff, 0x03 -}; - -/* - * Lock ordering is that you may not take stallion_lock holding - * brd_lock. - */ - -static spinlock_t brd_lock; /* Guard the board mapping */ -static spinlock_t stallion_lock; /* Guard the tty driver */ - -/* - * Set up enable and disable macros for the ECH boards. They require - * the secondary io address space to be activated and deactivated. - * This way all ECH boards can share their secondary io region. - * If this is an ECH-PCI board then also need to set the page pointer - * to point to the correct page. - */ -#define BRDENABLE(brdnr,pagenr) \ - if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \ - outb((stl_brds[(brdnr)]->ioctrlval | ECH_BRDENABLE), \ - stl_brds[(brdnr)]->ioctrl); \ - else if (stl_brds[(brdnr)]->brdtype == BRD_ECHPCI) \ - outb((pagenr), stl_brds[(brdnr)]->ioctrl); - -#define BRDDISABLE(brdnr) \ - if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \ - outb((stl_brds[(brdnr)]->ioctrlval | ECH_BRDDISABLE), \ - stl_brds[(brdnr)]->ioctrl); - -#define STL_CD1400MAXBAUD 230400 -#define STL_SC26198MAXBAUD 460800 - -#define STL_BAUDBASE 115200 -#define STL_CLOSEDELAY (5 * HZ / 10) - -/*****************************************************************************/ - -/* - * Define the Stallion PCI vendor and device IDs. - */ -#ifndef PCI_VENDOR_ID_STALLION -#define PCI_VENDOR_ID_STALLION 0x124d -#endif -#ifndef PCI_DEVICE_ID_ECHPCI832 -#define PCI_DEVICE_ID_ECHPCI832 0x0000 -#endif -#ifndef PCI_DEVICE_ID_ECHPCI864 -#define PCI_DEVICE_ID_ECHPCI864 0x0002 -#endif -#ifndef PCI_DEVICE_ID_EIOPCI -#define PCI_DEVICE_ID_EIOPCI 0x0003 -#endif - -/* - * Define structure to hold all Stallion PCI boards. - */ - -static struct pci_device_id stl_pcibrds[] = { - { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI864), - .driver_data = BRD_ECH64PCI }, - { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_EIOPCI), - .driver_data = BRD_EASYIOPCI }, - { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI832), - .driver_data = BRD_ECHPCI }, - { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87410), - .driver_data = BRD_ECHPCI }, - { } -}; -MODULE_DEVICE_TABLE(pci, stl_pcibrds); - -/*****************************************************************************/ - -/* - * Define macros to extract a brd/port number from a minor number. - */ -#define MINOR2BRD(min) (((min) & 0xc0) >> 6) -#define MINOR2PORT(min) ((min) & 0x3f) - -/* - * Define a baud rate table that converts termios baud rate selector - * into the actual baud rate value. All baud rate calculations are - * based on the actual baud rate required. - */ -static unsigned int stl_baudrates[] = { - 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, - 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 -}; - -/*****************************************************************************/ - -/* - * Declare all those functions in this driver! - */ - -static long stl_memioctl(struct file *fp, unsigned int cmd, unsigned long arg); -static int stl_brdinit(struct stlbrd *brdp); -static int stl_getportstats(struct tty_struct *tty, struct stlport *portp, comstats_t __user *cp); -static int stl_clrportstats(struct stlport *portp, comstats_t __user *cp); - -/* - * CD1400 uart specific handling functions. - */ -static void stl_cd1400setreg(struct stlport *portp, int regnr, int value); -static int stl_cd1400getreg(struct stlport *portp, int regnr); -static int stl_cd1400updatereg(struct stlport *portp, int regnr, int value); -static int stl_cd1400panelinit(struct stlbrd *brdp, struct stlpanel *panelp); -static void stl_cd1400portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp); -static void stl_cd1400setport(struct stlport *portp, struct ktermios *tiosp); -static int stl_cd1400getsignals(struct stlport *portp); -static void stl_cd1400setsignals(struct stlport *portp, int dtr, int rts); -static void stl_cd1400ccrwait(struct stlport *portp); -static void stl_cd1400enablerxtx(struct stlport *portp, int rx, int tx); -static void stl_cd1400startrxtx(struct stlport *portp, int rx, int tx); -static void stl_cd1400disableintrs(struct stlport *portp); -static void stl_cd1400sendbreak(struct stlport *portp, int len); -static void stl_cd1400flowctrl(struct stlport *portp, int state); -static void stl_cd1400sendflow(struct stlport *portp, int state); -static void stl_cd1400flush(struct stlport *portp); -static int stl_cd1400datastate(struct stlport *portp); -static void stl_cd1400eiointr(struct stlpanel *panelp, unsigned int iobase); -static void stl_cd1400echintr(struct stlpanel *panelp, unsigned int iobase); -static void stl_cd1400txisr(struct stlpanel *panelp, int ioaddr); -static void stl_cd1400rxisr(struct stlpanel *panelp, int ioaddr); -static void stl_cd1400mdmisr(struct stlpanel *panelp, int ioaddr); - -static inline int stl_cd1400breakisr(struct stlport *portp, int ioaddr); - -/* - * SC26198 uart specific handling functions. - */ -static void stl_sc26198setreg(struct stlport *portp, int regnr, int value); -static int stl_sc26198getreg(struct stlport *portp, int regnr); -static int stl_sc26198updatereg(struct stlport *portp, int regnr, int value); -static int stl_sc26198getglobreg(struct stlport *portp, int regnr); -static int stl_sc26198panelinit(struct stlbrd *brdp, struct stlpanel *panelp); -static void stl_sc26198portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp); -static void stl_sc26198setport(struct stlport *portp, struct ktermios *tiosp); -static int stl_sc26198getsignals(struct stlport *portp); -static void stl_sc26198setsignals(struct stlport *portp, int dtr, int rts); -static void stl_sc26198enablerxtx(struct stlport *portp, int rx, int tx); -static void stl_sc26198startrxtx(struct stlport *portp, int rx, int tx); -static void stl_sc26198disableintrs(struct stlport *portp); -static void stl_sc26198sendbreak(struct stlport *portp, int len); -static void stl_sc26198flowctrl(struct stlport *portp, int state); -static void stl_sc26198sendflow(struct stlport *portp, int state); -static void stl_sc26198flush(struct stlport *portp); -static int stl_sc26198datastate(struct stlport *portp); -static void stl_sc26198wait(struct stlport *portp); -static void stl_sc26198txunflow(struct stlport *portp, struct tty_struct *tty); -static void stl_sc26198intr(struct stlpanel *panelp, unsigned int iobase); -static void stl_sc26198txisr(struct stlport *port); -static void stl_sc26198rxisr(struct stlport *port, unsigned int iack); -static void stl_sc26198rxbadch(struct stlport *portp, unsigned char status, char ch); -static void stl_sc26198rxbadchars(struct stlport *portp); -static void stl_sc26198otherisr(struct stlport *port, unsigned int iack); - -/*****************************************************************************/ - -/* - * Generic UART support structure. - */ -typedef struct uart { - int (*panelinit)(struct stlbrd *brdp, struct stlpanel *panelp); - void (*portinit)(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp); - void (*setport)(struct stlport *portp, struct ktermios *tiosp); - int (*getsignals)(struct stlport *portp); - void (*setsignals)(struct stlport *portp, int dtr, int rts); - void (*enablerxtx)(struct stlport *portp, int rx, int tx); - void (*startrxtx)(struct stlport *portp, int rx, int tx); - void (*disableintrs)(struct stlport *portp); - void (*sendbreak)(struct stlport *portp, int len); - void (*flowctrl)(struct stlport *portp, int state); - void (*sendflow)(struct stlport *portp, int state); - void (*flush)(struct stlport *portp); - int (*datastate)(struct stlport *portp); - void (*intr)(struct stlpanel *panelp, unsigned int iobase); -} uart_t; - -/* - * Define some macros to make calling these functions nice and clean. - */ -#define stl_panelinit (* ((uart_t *) panelp->uartp)->panelinit) -#define stl_portinit (* ((uart_t *) portp->uartp)->portinit) -#define stl_setport (* ((uart_t *) portp->uartp)->setport) -#define stl_getsignals (* ((uart_t *) portp->uartp)->getsignals) -#define stl_setsignals (* ((uart_t *) portp->uartp)->setsignals) -#define stl_enablerxtx (* ((uart_t *) portp->uartp)->enablerxtx) -#define stl_startrxtx (* ((uart_t *) portp->uartp)->startrxtx) -#define stl_disableintrs (* ((uart_t *) portp->uartp)->disableintrs) -#define stl_sendbreak (* ((uart_t *) portp->uartp)->sendbreak) -#define stl_flowctrl (* ((uart_t *) portp->uartp)->flowctrl) -#define stl_sendflow (* ((uart_t *) portp->uartp)->sendflow) -#define stl_flush (* ((uart_t *) portp->uartp)->flush) -#define stl_datastate (* ((uart_t *) portp->uartp)->datastate) - -/*****************************************************************************/ - -/* - * CD1400 UART specific data initialization. - */ -static uart_t stl_cd1400uart = { - stl_cd1400panelinit, - stl_cd1400portinit, - stl_cd1400setport, - stl_cd1400getsignals, - stl_cd1400setsignals, - stl_cd1400enablerxtx, - stl_cd1400startrxtx, - stl_cd1400disableintrs, - stl_cd1400sendbreak, - stl_cd1400flowctrl, - stl_cd1400sendflow, - stl_cd1400flush, - stl_cd1400datastate, - stl_cd1400eiointr -}; - -/* - * Define the offsets within the register bank of a cd1400 based panel. - * These io address offsets are common to the EasyIO board as well. - */ -#define EREG_ADDR 0 -#define EREG_DATA 4 -#define EREG_RXACK 5 -#define EREG_TXACK 6 -#define EREG_MDACK 7 - -#define EREG_BANKSIZE 8 - -#define CD1400_CLK 25000000 -#define CD1400_CLK8M 20000000 - -/* - * Define the cd1400 baud rate clocks. These are used when calculating - * what clock and divisor to use for the required baud rate. Also - * define the maximum baud rate allowed, and the default base baud. - */ -static int stl_cd1400clkdivs[] = { - CD1400_CLK0, CD1400_CLK1, CD1400_CLK2, CD1400_CLK3, CD1400_CLK4 -}; - -/*****************************************************************************/ - -/* - * SC26198 UART specific data initization. - */ -static uart_t stl_sc26198uart = { - stl_sc26198panelinit, - stl_sc26198portinit, - stl_sc26198setport, - stl_sc26198getsignals, - stl_sc26198setsignals, - stl_sc26198enablerxtx, - stl_sc26198startrxtx, - stl_sc26198disableintrs, - stl_sc26198sendbreak, - stl_sc26198flowctrl, - stl_sc26198sendflow, - stl_sc26198flush, - stl_sc26198datastate, - stl_sc26198intr -}; - -/* - * Define the offsets within the register bank of a sc26198 based panel. - */ -#define XP_DATA 0 -#define XP_ADDR 1 -#define XP_MODID 2 -#define XP_STATUS 2 -#define XP_IACK 3 - -#define XP_BANKSIZE 4 - -/* - * Define the sc26198 baud rate table. Offsets within the table - * represent the actual baud rate selector of sc26198 registers. - */ -static unsigned int sc26198_baudtable[] = { - 50, 75, 150, 200, 300, 450, 600, 900, 1200, 1800, 2400, 3600, - 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 115200, - 230400, 460800, 921600 -}; - -#define SC26198_NRBAUDS ARRAY_SIZE(sc26198_baudtable) - -/*****************************************************************************/ - -/* - * Define the driver info for a user level control device. Used mainly - * to get at port stats - only not using the port device itself. - */ -static const struct file_operations stl_fsiomem = { - .owner = THIS_MODULE, - .unlocked_ioctl = stl_memioctl, - .llseek = noop_llseek, -}; - -static struct class *stallion_class; - -static void stl_cd_change(struct stlport *portp) -{ - unsigned int oldsigs = portp->sigs; - struct tty_struct *tty = tty_port_tty_get(&portp->port); - - if (!tty) - return; - - portp->sigs = stl_getsignals(portp); - - if ((portp->sigs & TIOCM_CD) && ((oldsigs & TIOCM_CD) == 0)) - wake_up_interruptible(&portp->port.open_wait); - - if ((oldsigs & TIOCM_CD) && ((portp->sigs & TIOCM_CD) == 0)) - if (portp->port.flags & ASYNC_CHECK_CD) - tty_hangup(tty); - tty_kref_put(tty); -} - -/* - * Check for any arguments passed in on the module load command line. - */ - -/*****************************************************************************/ - -/* - * Parse the supplied argument string, into the board conf struct. - */ - -static int __init stl_parsebrd(struct stlconf *confp, char **argp) -{ - char *sp; - unsigned int i; - - pr_debug("stl_parsebrd(confp=%p,argp=%p)\n", confp, argp); - - if ((argp[0] == NULL) || (*argp[0] == 0)) - return 0; - - for (sp = argp[0], i = 0; (*sp != 0) && (i < 25); sp++, i++) - *sp = tolower(*sp); - - for (i = 0; i < ARRAY_SIZE(stl_brdstr); i++) - if (strcmp(stl_brdstr[i].name, argp[0]) == 0) - break; - - if (i == ARRAY_SIZE(stl_brdstr)) { - printk("STALLION: unknown board name, %s?\n", argp[0]); - return 0; - } - - confp->brdtype = stl_brdstr[i].type; - - i = 1; - if ((argp[i] != NULL) && (*argp[i] != 0)) - confp->ioaddr1 = simple_strtoul(argp[i], NULL, 0); - i++; - if (confp->brdtype == BRD_ECH) { - if ((argp[i] != NULL) && (*argp[i] != 0)) - confp->ioaddr2 = simple_strtoul(argp[i], NULL, 0); - i++; - } - if ((argp[i] != NULL) && (*argp[i] != 0)) - confp->irq = simple_strtoul(argp[i], NULL, 0); - return 1; -} - -/*****************************************************************************/ - -/* - * Allocate a new board structure. Fill out the basic info in it. - */ - -static struct stlbrd *stl_allocbrd(void) -{ - struct stlbrd *brdp; - - brdp = kzalloc(sizeof(struct stlbrd), GFP_KERNEL); - if (!brdp) { - printk("STALLION: failed to allocate memory (size=%Zd)\n", - sizeof(struct stlbrd)); - return NULL; - } - - brdp->magic = STL_BOARDMAGIC; - return brdp; -} - -/*****************************************************************************/ - -static int stl_activate(struct tty_port *port, struct tty_struct *tty) -{ - struct stlport *portp = container_of(port, struct stlport, port); - if (!portp->tx.buf) { - portp->tx.buf = kmalloc(STL_TXBUFSIZE, GFP_KERNEL); - if (!portp->tx.buf) - return -ENOMEM; - portp->tx.head = portp->tx.buf; - portp->tx.tail = portp->tx.buf; - } - stl_setport(portp, tty->termios); - portp->sigs = stl_getsignals(portp); - stl_setsignals(portp, 1, 1); - stl_enablerxtx(portp, 1, 1); - stl_startrxtx(portp, 1, 0); - return 0; -} - -static int stl_open(struct tty_struct *tty, struct file *filp) -{ - struct stlport *portp; - struct stlbrd *brdp; - unsigned int minordev, brdnr, panelnr; - int portnr; - - pr_debug("stl_open(tty=%p,filp=%p): device=%s\n", tty, filp, tty->name); - - minordev = tty->index; - brdnr = MINOR2BRD(minordev); - if (brdnr >= stl_nrbrds) - return -ENODEV; - brdp = stl_brds[brdnr]; - if (brdp == NULL) - return -ENODEV; - - minordev = MINOR2PORT(minordev); - for (portnr = -1, panelnr = 0; panelnr < STL_MAXPANELS; panelnr++) { - if (brdp->panels[panelnr] == NULL) - break; - if (minordev < brdp->panels[panelnr]->nrports) { - portnr = minordev; - break; - } - minordev -= brdp->panels[panelnr]->nrports; - } - if (portnr < 0) - return -ENODEV; - - portp = brdp->panels[panelnr]->ports[portnr]; - if (portp == NULL) - return -ENODEV; - - tty->driver_data = portp; - return tty_port_open(&portp->port, tty, filp); - -} - -/*****************************************************************************/ - -static int stl_carrier_raised(struct tty_port *port) -{ - struct stlport *portp = container_of(port, struct stlport, port); - return (portp->sigs & TIOCM_CD) ? 1 : 0; -} - -static void stl_dtr_rts(struct tty_port *port, int on) -{ - struct stlport *portp = container_of(port, struct stlport, port); - /* Takes brd_lock internally */ - stl_setsignals(portp, on, on); -} - -/*****************************************************************************/ - -static void stl_flushbuffer(struct tty_struct *tty) -{ - struct stlport *portp; - - pr_debug("stl_flushbuffer(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return; - - stl_flush(portp); - tty_wakeup(tty); -} - -/*****************************************************************************/ - -static void stl_waituntilsent(struct tty_struct *tty, int timeout) -{ - struct stlport *portp; - unsigned long tend; - - pr_debug("stl_waituntilsent(tty=%p,timeout=%d)\n", tty, timeout); - - portp = tty->driver_data; - if (portp == NULL) - return; - - if (timeout == 0) - timeout = HZ; - tend = jiffies + timeout; - - while (stl_datastate(portp)) { - if (signal_pending(current)) - break; - msleep_interruptible(20); - if (time_after_eq(jiffies, tend)) - break; - } -} - -/*****************************************************************************/ - -static void stl_shutdown(struct tty_port *port) -{ - struct stlport *portp = container_of(port, struct stlport, port); - stl_disableintrs(portp); - stl_enablerxtx(portp, 0, 0); - stl_flush(portp); - portp->istate = 0; - if (portp->tx.buf != NULL) { - kfree(portp->tx.buf); - portp->tx.buf = NULL; - portp->tx.head = NULL; - portp->tx.tail = NULL; - } -} - -static void stl_close(struct tty_struct *tty, struct file *filp) -{ - struct stlport*portp; - pr_debug("stl_close(tty=%p,filp=%p)\n", tty, filp); - - portp = tty->driver_data; - if(portp == NULL) - return; - tty_port_close(&portp->port, tty, filp); -} - -/*****************************************************************************/ - -/* - * Write routine. Take data and stuff it in to the TX ring queue. - * If transmit interrupts are not running then start them. - */ - -static int stl_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - struct stlport *portp; - unsigned int len, stlen; - unsigned char *chbuf; - char *head, *tail; - - pr_debug("stl_write(tty=%p,buf=%p,count=%d)\n", tty, buf, count); - - portp = tty->driver_data; - if (portp == NULL) - return 0; - if (portp->tx.buf == NULL) - return 0; - -/* - * If copying direct from user space we must cater for page faults, - * causing us to "sleep" here for a while. To handle this copy in all - * the data we need now, into a local buffer. Then when we got it all - * copy it into the TX buffer. - */ - chbuf = (unsigned char *) buf; - - head = portp->tx.head; - tail = portp->tx.tail; - if (head >= tail) { - len = STL_TXBUFSIZE - (head - tail) - 1; - stlen = STL_TXBUFSIZE - (head - portp->tx.buf); - } else { - len = tail - head - 1; - stlen = len; - } - - len = min(len, (unsigned int)count); - count = 0; - while (len > 0) { - stlen = min(len, stlen); - memcpy(head, chbuf, stlen); - len -= stlen; - chbuf += stlen; - count += stlen; - head += stlen; - if (head >= (portp->tx.buf + STL_TXBUFSIZE)) { - head = portp->tx.buf; - stlen = tail - head; - } - } - portp->tx.head = head; - - clear_bit(ASYI_TXLOW, &portp->istate); - stl_startrxtx(portp, -1, 1); - - return count; -} - -/*****************************************************************************/ - -static int stl_putchar(struct tty_struct *tty, unsigned char ch) -{ - struct stlport *portp; - unsigned int len; - char *head, *tail; - - pr_debug("stl_putchar(tty=%p,ch=%x)\n", tty, ch); - - portp = tty->driver_data; - if (portp == NULL) - return -EINVAL; - if (portp->tx.buf == NULL) - return -EINVAL; - - head = portp->tx.head; - tail = portp->tx.tail; - - len = (head >= tail) ? (STL_TXBUFSIZE - (head - tail)) : (tail - head); - len--; - - if (len > 0) { - *head++ = ch; - if (head >= (portp->tx.buf + STL_TXBUFSIZE)) - head = portp->tx.buf; - } - portp->tx.head = head; - return 0; -} - -/*****************************************************************************/ - -/* - * If there are any characters in the buffer then make sure that TX - * interrupts are on and get'em out. Normally used after the putchar - * routine has been called. - */ - -static void stl_flushchars(struct tty_struct *tty) -{ - struct stlport *portp; - - pr_debug("stl_flushchars(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return; - if (portp->tx.buf == NULL) - return; - - stl_startrxtx(portp, -1, 1); -} - -/*****************************************************************************/ - -static int stl_writeroom(struct tty_struct *tty) -{ - struct stlport *portp; - char *head, *tail; - - pr_debug("stl_writeroom(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return 0; - if (portp->tx.buf == NULL) - return 0; - - head = portp->tx.head; - tail = portp->tx.tail; - return (head >= tail) ? (STL_TXBUFSIZE - (head - tail) - 1) : (tail - head - 1); -} - -/*****************************************************************************/ - -/* - * Return number of chars in the TX buffer. Normally we would just - * calculate the number of chars in the buffer and return that, but if - * the buffer is empty and TX interrupts are still on then we return - * that the buffer still has 1 char in it. This way whoever called us - * will not think that ALL chars have drained - since the UART still - * must have some chars in it (we are busy after all). - */ - -static int stl_charsinbuffer(struct tty_struct *tty) -{ - struct stlport *portp; - unsigned int size; - char *head, *tail; - - pr_debug("stl_charsinbuffer(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return 0; - if (portp->tx.buf == NULL) - return 0; - - head = portp->tx.head; - tail = portp->tx.tail; - size = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); - if ((size == 0) && test_bit(ASYI_TXBUSY, &portp->istate)) - size = 1; - return size; -} - -/*****************************************************************************/ - -/* - * Generate the serial struct info. - */ - -static int stl_getserial(struct stlport *portp, struct serial_struct __user *sp) -{ - struct serial_struct sio; - struct stlbrd *brdp; - - pr_debug("stl_getserial(portp=%p,sp=%p)\n", portp, sp); - - memset(&sio, 0, sizeof(struct serial_struct)); - - mutex_lock(&portp->port.mutex); - sio.line = portp->portnr; - sio.port = portp->ioaddr; - sio.flags = portp->port.flags; - sio.baud_base = portp->baud_base; - sio.close_delay = portp->close_delay; - sio.closing_wait = portp->closing_wait; - sio.custom_divisor = portp->custom_divisor; - sio.hub6 = 0; - if (portp->uartp == &stl_cd1400uart) { - sio.type = PORT_CIRRUS; - sio.xmit_fifo_size = CD1400_TXFIFOSIZE; - } else { - sio.type = PORT_UNKNOWN; - sio.xmit_fifo_size = SC26198_TXFIFOSIZE; - } - - brdp = stl_brds[portp->brdnr]; - if (brdp != NULL) - sio.irq = brdp->irq; - mutex_unlock(&portp->port.mutex); - - return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Set port according to the serial struct info. - * At this point we do not do any auto-configure stuff, so we will - * just quietly ignore any requests to change irq, etc. - */ - -static int stl_setserial(struct tty_struct *tty, struct serial_struct __user *sp) -{ - struct stlport * portp = tty->driver_data; - struct serial_struct sio; - - pr_debug("stl_setserial(portp=%p,sp=%p)\n", portp, sp); - - if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) - return -EFAULT; - mutex_lock(&portp->port.mutex); - if (!capable(CAP_SYS_ADMIN)) { - if ((sio.baud_base != portp->baud_base) || - (sio.close_delay != portp->close_delay) || - ((sio.flags & ~ASYNC_USR_MASK) != - (portp->port.flags & ~ASYNC_USR_MASK))) { - mutex_unlock(&portp->port.mutex); - return -EPERM; - } - } - - portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | - (sio.flags & ASYNC_USR_MASK); - portp->baud_base = sio.baud_base; - portp->close_delay = sio.close_delay; - portp->closing_wait = sio.closing_wait; - portp->custom_divisor = sio.custom_divisor; - mutex_unlock(&portp->port.mutex); - stl_setport(portp, tty->termios); - return 0; -} - -/*****************************************************************************/ - -static int stl_tiocmget(struct tty_struct *tty) -{ - struct stlport *portp; - - portp = tty->driver_data; - if (portp == NULL) - return -ENODEV; - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - - return stl_getsignals(portp); -} - -static int stl_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct stlport *portp; - int rts = -1, dtr = -1; - - portp = tty->driver_data; - if (portp == NULL) - return -ENODEV; - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - - if (set & TIOCM_RTS) - rts = 1; - if (set & TIOCM_DTR) - dtr = 1; - if (clear & TIOCM_RTS) - rts = 0; - if (clear & TIOCM_DTR) - dtr = 0; - - stl_setsignals(portp, dtr, rts); - return 0; -} - -static int stl_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) -{ - struct stlport *portp; - int rc; - void __user *argp = (void __user *)arg; - - pr_debug("stl_ioctl(tty=%p,cmd=%x,arg=%lx)\n", tty, cmd, arg); - - portp = tty->driver_data; - if (portp == NULL) - return -ENODEV; - - if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) - if (tty->flags & (1 << TTY_IO_ERROR)) - return -EIO; - - rc = 0; - - switch (cmd) { - case TIOCGSERIAL: - rc = stl_getserial(portp, argp); - break; - case TIOCSSERIAL: - rc = stl_setserial(tty, argp); - break; - case COM_GETPORTSTATS: - rc = stl_getportstats(tty, portp, argp); - break; - case COM_CLRPORTSTATS: - rc = stl_clrportstats(portp, argp); - break; - case TIOCSERCONFIG: - case TIOCSERGWILD: - case TIOCSERSWILD: - case TIOCSERGETLSR: - case TIOCSERGSTRUCT: - case TIOCSERGETMULTI: - case TIOCSERSETMULTI: - default: - rc = -ENOIOCTLCMD; - break; - } - return rc; -} - -/*****************************************************************************/ - -/* - * Start the transmitter again. Just turn TX interrupts back on. - */ - -static void stl_start(struct tty_struct *tty) -{ - struct stlport *portp; - - pr_debug("stl_start(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return; - stl_startrxtx(portp, -1, 1); -} - -/*****************************************************************************/ - -static void stl_settermios(struct tty_struct *tty, struct ktermios *old) -{ - struct stlport *portp; - struct ktermios *tiosp; - - pr_debug("stl_settermios(tty=%p,old=%p)\n", tty, old); - - portp = tty->driver_data; - if (portp == NULL) - return; - - tiosp = tty->termios; - if ((tiosp->c_cflag == old->c_cflag) && - (tiosp->c_iflag == old->c_iflag)) - return; - - stl_setport(portp, tiosp); - stl_setsignals(portp, ((tiosp->c_cflag & (CBAUD & ~CBAUDEX)) ? 1 : 0), - -1); - if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) { - tty->hw_stopped = 0; - stl_start(tty); - } - if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) - wake_up_interruptible(&portp->port.open_wait); -} - -/*****************************************************************************/ - -/* - * Attempt to flow control who ever is sending us data. Based on termios - * settings use software or/and hardware flow control. - */ - -static void stl_throttle(struct tty_struct *tty) -{ - struct stlport *portp; - - pr_debug("stl_throttle(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return; - stl_flowctrl(portp, 0); -} - -/*****************************************************************************/ - -/* - * Unflow control the device sending us data... - */ - -static void stl_unthrottle(struct tty_struct *tty) -{ - struct stlport *portp; - - pr_debug("stl_unthrottle(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return; - stl_flowctrl(portp, 1); -} - -/*****************************************************************************/ - -/* - * Stop the transmitter. Basically to do this we will just turn TX - * interrupts off. - */ - -static void stl_stop(struct tty_struct *tty) -{ - struct stlport *portp; - - pr_debug("stl_stop(tty=%p)\n", tty); - - portp = tty->driver_data; - if (portp == NULL) - return; - stl_startrxtx(portp, -1, 0); -} - -/*****************************************************************************/ - -/* - * Hangup this port. This is pretty much like closing the port, only - * a little more brutal. No waiting for data to drain. Shutdown the - * port and maybe drop signals. - */ - -static void stl_hangup(struct tty_struct *tty) -{ - struct stlport *portp = tty->driver_data; - pr_debug("stl_hangup(tty=%p)\n", tty); - - if (portp == NULL) - return; - tty_port_hangup(&portp->port); -} - -/*****************************************************************************/ - -static int stl_breakctl(struct tty_struct *tty, int state) -{ - struct stlport *portp; - - pr_debug("stl_breakctl(tty=%p,state=%d)\n", tty, state); - - portp = tty->driver_data; - if (portp == NULL) - return -EINVAL; - - stl_sendbreak(portp, ((state == -1) ? 1 : 2)); - return 0; -} - -/*****************************************************************************/ - -static void stl_sendxchar(struct tty_struct *tty, char ch) -{ - struct stlport *portp; - - pr_debug("stl_sendxchar(tty=%p,ch=%x)\n", tty, ch); - - portp = tty->driver_data; - if (portp == NULL) - return; - - if (ch == STOP_CHAR(tty)) - stl_sendflow(portp, 0); - else if (ch == START_CHAR(tty)) - stl_sendflow(portp, 1); - else - stl_putchar(tty, ch); -} - -static void stl_portinfo(struct seq_file *m, struct stlport *portp, int portnr) -{ - int sigs; - char sep; - - seq_printf(m, "%d: uart:%s tx:%d rx:%d", - portnr, (portp->hwid == 1) ? "SC26198" : "CD1400", - (int) portp->stats.txtotal, (int) portp->stats.rxtotal); - - if (portp->stats.rxframing) - seq_printf(m, " fe:%d", (int) portp->stats.rxframing); - if (portp->stats.rxparity) - seq_printf(m, " pe:%d", (int) portp->stats.rxparity); - if (portp->stats.rxbreaks) - seq_printf(m, " brk:%d", (int) portp->stats.rxbreaks); - if (portp->stats.rxoverrun) - seq_printf(m, " oe:%d", (int) portp->stats.rxoverrun); - - sigs = stl_getsignals(portp); - sep = ' '; - if (sigs & TIOCM_RTS) { - seq_printf(m, "%c%s", sep, "RTS"); - sep = '|'; - } - if (sigs & TIOCM_CTS) { - seq_printf(m, "%c%s", sep, "CTS"); - sep = '|'; - } - if (sigs & TIOCM_DTR) { - seq_printf(m, "%c%s", sep, "DTR"); - sep = '|'; - } - if (sigs & TIOCM_CD) { - seq_printf(m, "%c%s", sep, "DCD"); - sep = '|'; - } - if (sigs & TIOCM_DSR) { - seq_printf(m, "%c%s", sep, "DSR"); - sep = '|'; - } - seq_putc(m, '\n'); -} - -/*****************************************************************************/ - -/* - * Port info, read from the /proc file system. - */ - -static int stl_proc_show(struct seq_file *m, void *v) -{ - struct stlbrd *brdp; - struct stlpanel *panelp; - struct stlport *portp; - unsigned int brdnr, panelnr, portnr; - int totalport; - - totalport = 0; - - seq_printf(m, "%s: version %s\n", stl_drvtitle, stl_drvversion); - -/* - * We scan through for each board, panel and port. The offset is - * calculated on the fly, and irrelevant ports are skipped. - */ - for (brdnr = 0; brdnr < stl_nrbrds; brdnr++) { - brdp = stl_brds[brdnr]; - if (brdp == NULL) - continue; - if (brdp->state == 0) - continue; - - totalport = brdnr * STL_MAXPORTS; - for (panelnr = 0; panelnr < brdp->nrpanels; panelnr++) { - panelp = brdp->panels[panelnr]; - if (panelp == NULL) - continue; - - for (portnr = 0; portnr < panelp->nrports; portnr++, - totalport++) { - portp = panelp->ports[portnr]; - if (portp == NULL) - continue; - stl_portinfo(m, portp, totalport); - } - } - } - return 0; -} - -static int stl_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, stl_proc_show, NULL); -} - -static const struct file_operations stl_proc_fops = { - .owner = THIS_MODULE, - .open = stl_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/*****************************************************************************/ - -/* - * All board interrupts are vectored through here first. This code then - * calls off to the approrpriate board interrupt handlers. - */ - -static irqreturn_t stl_intr(int irq, void *dev_id) -{ - struct stlbrd *brdp = dev_id; - - pr_debug("stl_intr(brdp=%p,irq=%d)\n", brdp, brdp->irq); - - return IRQ_RETVAL((* brdp->isr)(brdp)); -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for EasyIO board types. - */ - -static int stl_eiointr(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - unsigned int iobase; - int handled = 0; - - spin_lock(&brd_lock); - panelp = brdp->panels[0]; - iobase = panelp->iobase; - while (inb(brdp->iostatus) & EIO_INTRPEND) { - handled = 1; - (* panelp->isr)(panelp, iobase); - } - spin_unlock(&brd_lock); - return handled; -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for ECH-AT board types. - */ - -static int stl_echatintr(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - unsigned int ioaddr, bnknr; - int handled = 0; - - outb((brdp->ioctrlval | ECH_BRDENABLE), brdp->ioctrl); - - while (inb(brdp->iostatus) & ECH_INTRPEND) { - handled = 1; - for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { - ioaddr = brdp->bnkstataddr[bnknr]; - if (inb(ioaddr) & ECH_PNLINTRPEND) { - panelp = brdp->bnk2panel[bnknr]; - (* panelp->isr)(panelp, (ioaddr & 0xfffc)); - } - } - } - - outb((brdp->ioctrlval | ECH_BRDDISABLE), brdp->ioctrl); - - return handled; -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for ECH-MCA board types. - */ - -static int stl_echmcaintr(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - unsigned int ioaddr, bnknr; - int handled = 0; - - while (inb(brdp->iostatus) & ECH_INTRPEND) { - handled = 1; - for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { - ioaddr = brdp->bnkstataddr[bnknr]; - if (inb(ioaddr) & ECH_PNLINTRPEND) { - panelp = brdp->bnk2panel[bnknr]; - (* panelp->isr)(panelp, (ioaddr & 0xfffc)); - } - } - } - return handled; -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for ECH-PCI board types. - */ - -static int stl_echpciintr(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - unsigned int ioaddr, bnknr, recheck; - int handled = 0; - - while (1) { - recheck = 0; - for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { - outb(brdp->bnkpageaddr[bnknr], brdp->ioctrl); - ioaddr = brdp->bnkstataddr[bnknr]; - if (inb(ioaddr) & ECH_PNLINTRPEND) { - panelp = brdp->bnk2panel[bnknr]; - (* panelp->isr)(panelp, (ioaddr & 0xfffc)); - recheck++; - handled = 1; - } - } - if (! recheck) - break; - } - return handled; -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for ECH-8/64-PCI board types. - */ - -static int stl_echpci64intr(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - unsigned int ioaddr, bnknr; - int handled = 0; - - while (inb(brdp->ioctrl) & 0x1) { - handled = 1; - for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { - ioaddr = brdp->bnkstataddr[bnknr]; - if (inb(ioaddr) & ECH_PNLINTRPEND) { - panelp = brdp->bnk2panel[bnknr]; - (* panelp->isr)(panelp, (ioaddr & 0xfffc)); - } - } - } - - return handled; -} - -/*****************************************************************************/ - -/* - * Initialize all the ports on a panel. - */ - -static int __devinit stl_initports(struct stlbrd *brdp, struct stlpanel *panelp) -{ - struct stlport *portp; - unsigned int i; - int chipmask; - - pr_debug("stl_initports(brdp=%p,panelp=%p)\n", brdp, panelp); - - chipmask = stl_panelinit(brdp, panelp); - -/* - * All UART's are initialized (if found!). Now go through and setup - * each ports data structures. - */ - for (i = 0; i < panelp->nrports; i++) { - portp = kzalloc(sizeof(struct stlport), GFP_KERNEL); - if (!portp) { - printk("STALLION: failed to allocate memory " - "(size=%Zd)\n", sizeof(struct stlport)); - break; - } - tty_port_init(&portp->port); - portp->port.ops = &stl_port_ops; - portp->magic = STL_PORTMAGIC; - portp->portnr = i; - portp->brdnr = panelp->brdnr; - portp->panelnr = panelp->panelnr; - portp->uartp = panelp->uartp; - portp->clk = brdp->clk; - portp->baud_base = STL_BAUDBASE; - portp->close_delay = STL_CLOSEDELAY; - portp->closing_wait = 30 * HZ; - init_waitqueue_head(&portp->port.open_wait); - init_waitqueue_head(&portp->port.close_wait); - portp->stats.brd = portp->brdnr; - portp->stats.panel = portp->panelnr; - portp->stats.port = portp->portnr; - panelp->ports[i] = portp; - stl_portinit(brdp, panelp, portp); - } - - return 0; -} - -static void stl_cleanup_panels(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - struct stlport *portp; - unsigned int j, k; - struct tty_struct *tty; - - for (j = 0; j < STL_MAXPANELS; j++) { - panelp = brdp->panels[j]; - if (panelp == NULL) - continue; - for (k = 0; k < STL_PORTSPERPANEL; k++) { - portp = panelp->ports[k]; - if (portp == NULL) - continue; - tty = tty_port_tty_get(&portp->port); - if (tty != NULL) { - stl_hangup(tty); - tty_kref_put(tty); - } - kfree(portp->tx.buf); - kfree(portp); - } - kfree(panelp); - } -} - -/*****************************************************************************/ - -/* - * Try to find and initialize an EasyIO board. - */ - -static int __devinit stl_initeio(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - unsigned int status; - char *name; - int retval; - - pr_debug("stl_initeio(brdp=%p)\n", brdp); - - brdp->ioctrl = brdp->ioaddr1 + 1; - brdp->iostatus = brdp->ioaddr1 + 2; - - status = inb(brdp->iostatus); - if ((status & EIO_IDBITMASK) == EIO_MK3) - brdp->ioctrl++; - -/* - * Handle board specific stuff now. The real difference is PCI - * or not PCI. - */ - if (brdp->brdtype == BRD_EASYIOPCI) { - brdp->iosize1 = 0x80; - brdp->iosize2 = 0x80; - name = "serial(EIO-PCI)"; - outb(0x41, (brdp->ioaddr2 + 0x4c)); - } else { - brdp->iosize1 = 8; - name = "serial(EIO)"; - if ((brdp->irq < 0) || (brdp->irq > 15) || - (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { - printk("STALLION: invalid irq=%d for brd=%d\n", - brdp->irq, brdp->brdnr); - retval = -EINVAL; - goto err; - } - outb((stl_vecmap[brdp->irq] | EIO_0WS | - ((brdp->irqtype) ? EIO_INTLEVEL : EIO_INTEDGE)), - brdp->ioctrl); - } - - retval = -EBUSY; - if (!request_region(brdp->ioaddr1, brdp->iosize1, name)) { - printk(KERN_WARNING "STALLION: Warning, board %d I/O address " - "%x conflicts with another device\n", brdp->brdnr, - brdp->ioaddr1); - goto err; - } - - if (brdp->iosize2 > 0) - if (!request_region(brdp->ioaddr2, brdp->iosize2, name)) { - printk(KERN_WARNING "STALLION: Warning, board %d I/O " - "address %x conflicts with another device\n", - brdp->brdnr, brdp->ioaddr2); - printk(KERN_WARNING "STALLION: Warning, also " - "releasing board %d I/O address %x \n", - brdp->brdnr, brdp->ioaddr1); - goto err_rel1; - } - -/* - * Everything looks OK, so let's go ahead and probe for the hardware. - */ - brdp->clk = CD1400_CLK; - brdp->isr = stl_eiointr; - - retval = -ENODEV; - switch (status & EIO_IDBITMASK) { - case EIO_8PORTM: - brdp->clk = CD1400_CLK8M; - /* fall thru */ - case EIO_8PORTRS: - case EIO_8PORTDI: - brdp->nrports = 8; - break; - case EIO_4PORTRS: - brdp->nrports = 4; - break; - case EIO_MK3: - switch (status & EIO_BRDMASK) { - case ID_BRD4: - brdp->nrports = 4; - break; - case ID_BRD8: - brdp->nrports = 8; - break; - case ID_BRD16: - brdp->nrports = 16; - break; - default: - goto err_rel2; - } - break; - default: - goto err_rel2; - } - -/* - * We have verified that the board is actually present, so now we - * can complete the setup. - */ - - panelp = kzalloc(sizeof(struct stlpanel), GFP_KERNEL); - if (!panelp) { - printk(KERN_WARNING "STALLION: failed to allocate memory " - "(size=%Zd)\n", sizeof(struct stlpanel)); - retval = -ENOMEM; - goto err_rel2; - } - - panelp->magic = STL_PANELMAGIC; - panelp->brdnr = brdp->brdnr; - panelp->panelnr = 0; - panelp->nrports = brdp->nrports; - panelp->iobase = brdp->ioaddr1; - panelp->hwid = status; - if ((status & EIO_IDBITMASK) == EIO_MK3) { - panelp->uartp = &stl_sc26198uart; - panelp->isr = stl_sc26198intr; - } else { - panelp->uartp = &stl_cd1400uart; - panelp->isr = stl_cd1400eiointr; - } - - brdp->panels[0] = panelp; - brdp->nrpanels = 1; - brdp->state |= BRD_FOUND; - brdp->hwid = status; - if (request_irq(brdp->irq, stl_intr, IRQF_SHARED, name, brdp) != 0) { - printk("STALLION: failed to register interrupt " - "routine for %s irq=%d\n", name, brdp->irq); - retval = -ENODEV; - goto err_fr; - } - - return 0; -err_fr: - stl_cleanup_panels(brdp); -err_rel2: - if (brdp->iosize2 > 0) - release_region(brdp->ioaddr2, brdp->iosize2); -err_rel1: - release_region(brdp->ioaddr1, brdp->iosize1); -err: - return retval; -} - -/*****************************************************************************/ - -/* - * Try to find an ECH board and initialize it. This code is capable of - * dealing with all types of ECH board. - */ - -static int __devinit stl_initech(struct stlbrd *brdp) -{ - struct stlpanel *panelp; - unsigned int status, nxtid, ioaddr, conflict, panelnr, banknr, i; - int retval; - char *name; - - pr_debug("stl_initech(brdp=%p)\n", brdp); - - status = 0; - conflict = 0; - -/* - * Set up the initial board register contents for boards. This varies a - * bit between the different board types. So we need to handle each - * separately. Also do a check that the supplied IRQ is good. - */ - switch (brdp->brdtype) { - - case BRD_ECH: - brdp->isr = stl_echatintr; - brdp->ioctrl = brdp->ioaddr1 + 1; - brdp->iostatus = brdp->ioaddr1 + 1; - status = inb(brdp->iostatus); - if ((status & ECH_IDBITMASK) != ECH_ID) { - retval = -ENODEV; - goto err; - } - if ((brdp->irq < 0) || (brdp->irq > 15) || - (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { - printk("STALLION: invalid irq=%d for brd=%d\n", - brdp->irq, brdp->brdnr); - retval = -EINVAL; - goto err; - } - status = ((brdp->ioaddr2 & ECH_ADDR2MASK) >> 1); - status |= (stl_vecmap[brdp->irq] << 1); - outb((status | ECH_BRDRESET), brdp->ioaddr1); - brdp->ioctrlval = ECH_INTENABLE | - ((brdp->irqtype) ? ECH_INTLEVEL : ECH_INTEDGE); - for (i = 0; i < 10; i++) - outb((brdp->ioctrlval | ECH_BRDENABLE), brdp->ioctrl); - brdp->iosize1 = 2; - brdp->iosize2 = 32; - name = "serial(EC8/32)"; - outb(status, brdp->ioaddr1); - break; - - case BRD_ECHMC: - brdp->isr = stl_echmcaintr; - brdp->ioctrl = brdp->ioaddr1 + 0x20; - brdp->iostatus = brdp->ioctrl; - status = inb(brdp->iostatus); - if ((status & ECH_IDBITMASK) != ECH_ID) { - retval = -ENODEV; - goto err; - } - if ((brdp->irq < 0) || (brdp->irq > 15) || - (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { - printk("STALLION: invalid irq=%d for brd=%d\n", - brdp->irq, brdp->brdnr); - retval = -EINVAL; - goto err; - } - outb(ECHMC_BRDRESET, brdp->ioctrl); - outb(ECHMC_INTENABLE, brdp->ioctrl); - brdp->iosize1 = 64; - name = "serial(EC8/32-MC)"; - break; - - case BRD_ECHPCI: - brdp->isr = stl_echpciintr; - brdp->ioctrl = brdp->ioaddr1 + 2; - brdp->iosize1 = 4; - brdp->iosize2 = 8; - name = "serial(EC8/32-PCI)"; - break; - - case BRD_ECH64PCI: - brdp->isr = stl_echpci64intr; - brdp->ioctrl = brdp->ioaddr2 + 0x40; - outb(0x43, (brdp->ioaddr1 + 0x4c)); - brdp->iosize1 = 0x80; - brdp->iosize2 = 0x80; - name = "serial(EC8/64-PCI)"; - break; - - default: - printk("STALLION: unknown board type=%d\n", brdp->brdtype); - retval = -EINVAL; - goto err; - } - -/* - * Check boards for possible IO address conflicts and return fail status - * if an IO conflict found. - */ - retval = -EBUSY; - if (!request_region(brdp->ioaddr1, brdp->iosize1, name)) { - printk(KERN_WARNING "STALLION: Warning, board %d I/O address " - "%x conflicts with another device\n", brdp->brdnr, - brdp->ioaddr1); - goto err; - } - - if (brdp->iosize2 > 0) - if (!request_region(brdp->ioaddr2, brdp->iosize2, name)) { - printk(KERN_WARNING "STALLION: Warning, board %d I/O " - "address %x conflicts with another device\n", - brdp->brdnr, brdp->ioaddr2); - printk(KERN_WARNING "STALLION: Warning, also " - "releasing board %d I/O address %x \n", - brdp->brdnr, brdp->ioaddr1); - goto err_rel1; - } - -/* - * Scan through the secondary io address space looking for panels. - * As we find'em allocate and initialize panel structures for each. - */ - brdp->clk = CD1400_CLK; - brdp->hwid = status; - - ioaddr = brdp->ioaddr2; - banknr = 0; - panelnr = 0; - nxtid = 0; - - for (i = 0; i < STL_MAXPANELS; i++) { - if (brdp->brdtype == BRD_ECHPCI) { - outb(nxtid, brdp->ioctrl); - ioaddr = brdp->ioaddr2; - } - status = inb(ioaddr + ECH_PNLSTATUS); - if ((status & ECH_PNLIDMASK) != nxtid) - break; - panelp = kzalloc(sizeof(struct stlpanel), GFP_KERNEL); - if (!panelp) { - printk("STALLION: failed to allocate memory " - "(size=%Zd)\n", sizeof(struct stlpanel)); - retval = -ENOMEM; - goto err_fr; - } - panelp->magic = STL_PANELMAGIC; - panelp->brdnr = brdp->brdnr; - panelp->panelnr = panelnr; - panelp->iobase = ioaddr; - panelp->pagenr = nxtid; - panelp->hwid = status; - brdp->bnk2panel[banknr] = panelp; - brdp->bnkpageaddr[banknr] = nxtid; - brdp->bnkstataddr[banknr++] = ioaddr + ECH_PNLSTATUS; - - if (status & ECH_PNLXPID) { - panelp->uartp = &stl_sc26198uart; - panelp->isr = stl_sc26198intr; - if (status & ECH_PNL16PORT) { - panelp->nrports = 16; - brdp->bnk2panel[banknr] = panelp; - brdp->bnkpageaddr[banknr] = nxtid; - brdp->bnkstataddr[banknr++] = ioaddr + 4 + - ECH_PNLSTATUS; - } else - panelp->nrports = 8; - } else { - panelp->uartp = &stl_cd1400uart; - panelp->isr = stl_cd1400echintr; - if (status & ECH_PNL16PORT) { - panelp->nrports = 16; - panelp->ackmask = 0x80; - if (brdp->brdtype != BRD_ECHPCI) - ioaddr += EREG_BANKSIZE; - brdp->bnk2panel[banknr] = panelp; - brdp->bnkpageaddr[banknr] = ++nxtid; - brdp->bnkstataddr[banknr++] = ioaddr + - ECH_PNLSTATUS; - } else { - panelp->nrports = 8; - panelp->ackmask = 0xc0; - } - } - - nxtid++; - ioaddr += EREG_BANKSIZE; - brdp->nrports += panelp->nrports; - brdp->panels[panelnr++] = panelp; - if ((brdp->brdtype != BRD_ECHPCI) && - (ioaddr >= (brdp->ioaddr2 + brdp->iosize2))) { - retval = -EINVAL; - goto err_fr; - } - } - - brdp->nrpanels = panelnr; - brdp->nrbnks = banknr; - if (brdp->brdtype == BRD_ECH) - outb((brdp->ioctrlval | ECH_BRDDISABLE), brdp->ioctrl); - - brdp->state |= BRD_FOUND; - if (request_irq(brdp->irq, stl_intr, IRQF_SHARED, name, brdp) != 0) { - printk("STALLION: failed to register interrupt " - "routine for %s irq=%d\n", name, brdp->irq); - retval = -ENODEV; - goto err_fr; - } - - return 0; -err_fr: - stl_cleanup_panels(brdp); - if (brdp->iosize2 > 0) - release_region(brdp->ioaddr2, brdp->iosize2); -err_rel1: - release_region(brdp->ioaddr1, brdp->iosize1); -err: - return retval; -} - -/*****************************************************************************/ - -/* - * Initialize and configure the specified board. - * Scan through all the boards in the configuration and see what we - * can find. Handle EIO and the ECH boards a little differently here - * since the initial search and setup is very different. - */ - -static int __devinit stl_brdinit(struct stlbrd *brdp) -{ - int i, retval; - - pr_debug("stl_brdinit(brdp=%p)\n", brdp); - - switch (brdp->brdtype) { - case BRD_EASYIO: - case BRD_EASYIOPCI: - retval = stl_initeio(brdp); - if (retval) - goto err; - break; - case BRD_ECH: - case BRD_ECHMC: - case BRD_ECHPCI: - case BRD_ECH64PCI: - retval = stl_initech(brdp); - if (retval) - goto err; - break; - default: - printk("STALLION: board=%d is unknown board type=%d\n", - brdp->brdnr, brdp->brdtype); - retval = -ENODEV; - goto err; - } - - if ((brdp->state & BRD_FOUND) == 0) { - printk("STALLION: %s board not found, board=%d io=%x irq=%d\n", - stl_brdnames[brdp->brdtype], brdp->brdnr, - brdp->ioaddr1, brdp->irq); - goto err_free; - } - - for (i = 0; i < STL_MAXPANELS; i++) - if (brdp->panels[i] != NULL) - stl_initports(brdp, brdp->panels[i]); - - printk("STALLION: %s found, board=%d io=%x irq=%d " - "nrpanels=%d nrports=%d\n", stl_brdnames[brdp->brdtype], - brdp->brdnr, brdp->ioaddr1, brdp->irq, brdp->nrpanels, - brdp->nrports); - - return 0; -err_free: - free_irq(brdp->irq, brdp); - - stl_cleanup_panels(brdp); - - release_region(brdp->ioaddr1, brdp->iosize1); - if (brdp->iosize2 > 0) - release_region(brdp->ioaddr2, brdp->iosize2); -err: - return retval; -} - -/*****************************************************************************/ - -/* - * Find the next available board number that is free. - */ - -static int __devinit stl_getbrdnr(void) -{ - unsigned int i; - - for (i = 0; i < STL_MAXBRDS; i++) - if (stl_brds[i] == NULL) { - if (i >= stl_nrbrds) - stl_nrbrds = i + 1; - return i; - } - - return -1; -} - -/*****************************************************************************/ -/* - * We have a Stallion board. Allocate a board structure and - * initialize it. Read its IO and IRQ resources from PCI - * configuration space. - */ - -static int __devinit stl_pciprobe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct stlbrd *brdp; - unsigned int i, brdtype = ent->driver_data; - int brdnr, retval = -ENODEV; - - if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) - goto err; - - retval = pci_enable_device(pdev); - if (retval) - goto err; - brdp = stl_allocbrd(); - if (brdp == NULL) { - retval = -ENOMEM; - goto err; - } - mutex_lock(&stl_brdslock); - brdnr = stl_getbrdnr(); - if (brdnr < 0) { - dev_err(&pdev->dev, "too many boards found, " - "maximum supported %d\n", STL_MAXBRDS); - mutex_unlock(&stl_brdslock); - retval = -ENODEV; - goto err_fr; - } - brdp->brdnr = (unsigned int)brdnr; - stl_brds[brdp->brdnr] = brdp; - mutex_unlock(&stl_brdslock); - - brdp->brdtype = brdtype; - brdp->state |= STL_PROBED; - -/* - * We have all resources from the board, so let's setup the actual - * board structure now. - */ - switch (brdtype) { - case BRD_ECHPCI: - brdp->ioaddr2 = pci_resource_start(pdev, 0); - brdp->ioaddr1 = pci_resource_start(pdev, 1); - break; - case BRD_ECH64PCI: - brdp->ioaddr2 = pci_resource_start(pdev, 2); - brdp->ioaddr1 = pci_resource_start(pdev, 1); - break; - case BRD_EASYIOPCI: - brdp->ioaddr1 = pci_resource_start(pdev, 2); - brdp->ioaddr2 = pci_resource_start(pdev, 1); - break; - default: - dev_err(&pdev->dev, "unknown PCI board type=%u\n", brdtype); - break; - } - - brdp->irq = pdev->irq; - retval = stl_brdinit(brdp); - if (retval) - goto err_null; - - pci_set_drvdata(pdev, brdp); - - for (i = 0; i < brdp->nrports; i++) - tty_register_device(stl_serial, - brdp->brdnr * STL_MAXPORTS + i, &pdev->dev); - - return 0; -err_null: - stl_brds[brdp->brdnr] = NULL; -err_fr: - kfree(brdp); -err: - return retval; -} - -static void __devexit stl_pciremove(struct pci_dev *pdev) -{ - struct stlbrd *brdp = pci_get_drvdata(pdev); - unsigned int i; - - free_irq(brdp->irq, brdp); - - stl_cleanup_panels(brdp); - - release_region(brdp->ioaddr1, brdp->iosize1); - if (brdp->iosize2 > 0) - release_region(brdp->ioaddr2, brdp->iosize2); - - for (i = 0; i < brdp->nrports; i++) - tty_unregister_device(stl_serial, - brdp->brdnr * STL_MAXPORTS + i); - - stl_brds[brdp->brdnr] = NULL; - kfree(brdp); -} - -static struct pci_driver stl_pcidriver = { - .name = "stallion", - .id_table = stl_pcibrds, - .probe = stl_pciprobe, - .remove = __devexit_p(stl_pciremove) -}; - -/*****************************************************************************/ - -/* - * Return the board stats structure to user app. - */ - -static int stl_getbrdstats(combrd_t __user *bp) -{ - combrd_t stl_brdstats; - struct stlbrd *brdp; - struct stlpanel *panelp; - unsigned int i; - - if (copy_from_user(&stl_brdstats, bp, sizeof(combrd_t))) - return -EFAULT; - if (stl_brdstats.brd >= STL_MAXBRDS) - return -ENODEV; - brdp = stl_brds[stl_brdstats.brd]; - if (brdp == NULL) - return -ENODEV; - - memset(&stl_brdstats, 0, sizeof(combrd_t)); - stl_brdstats.brd = brdp->brdnr; - stl_brdstats.type = brdp->brdtype; - stl_brdstats.hwid = brdp->hwid; - stl_brdstats.state = brdp->state; - stl_brdstats.ioaddr = brdp->ioaddr1; - stl_brdstats.ioaddr2 = brdp->ioaddr2; - stl_brdstats.irq = brdp->irq; - stl_brdstats.nrpanels = brdp->nrpanels; - stl_brdstats.nrports = brdp->nrports; - for (i = 0; i < brdp->nrpanels; i++) { - panelp = brdp->panels[i]; - stl_brdstats.panels[i].panel = i; - stl_brdstats.panels[i].hwid = panelp->hwid; - stl_brdstats.panels[i].nrports = panelp->nrports; - } - - return copy_to_user(bp, &stl_brdstats, sizeof(combrd_t)) ? -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Resolve the referenced port number into a port struct pointer. - */ - -static struct stlport *stl_getport(int brdnr, int panelnr, int portnr) -{ - struct stlbrd *brdp; - struct stlpanel *panelp; - - if (brdnr < 0 || brdnr >= STL_MAXBRDS) - return NULL; - brdp = stl_brds[brdnr]; - if (brdp == NULL) - return NULL; - if (panelnr < 0 || (unsigned int)panelnr >= brdp->nrpanels) - return NULL; - panelp = brdp->panels[panelnr]; - if (panelp == NULL) - return NULL; - if (portnr < 0 || (unsigned int)portnr >= panelp->nrports) - return NULL; - return panelp->ports[portnr]; -} - -/*****************************************************************************/ - -/* - * Return the port stats structure to user app. A NULL port struct - * pointer passed in means that we need to find out from the app - * what port to get stats for (used through board control device). - */ - -static int stl_getportstats(struct tty_struct *tty, struct stlport *portp, comstats_t __user *cp) -{ - comstats_t stl_comstats; - unsigned char *head, *tail; - unsigned long flags; - - if (!portp) { - if (copy_from_user(&stl_comstats, cp, sizeof(comstats_t))) - return -EFAULT; - portp = stl_getport(stl_comstats.brd, stl_comstats.panel, - stl_comstats.port); - if (portp == NULL) - return -ENODEV; - } - - mutex_lock(&portp->port.mutex); - portp->stats.state = portp->istate; - portp->stats.flags = portp->port.flags; - portp->stats.hwid = portp->hwid; - - portp->stats.ttystate = 0; - portp->stats.cflags = 0; - portp->stats.iflags = 0; - portp->stats.oflags = 0; - portp->stats.lflags = 0; - portp->stats.rxbuffered = 0; - - spin_lock_irqsave(&stallion_lock, flags); - if (tty != NULL && portp->port.tty == tty) { - portp->stats.ttystate = tty->flags; - /* No longer available as a statistic */ - portp->stats.rxbuffered = 1; /*tty->flip.count; */ - if (tty->termios != NULL) { - portp->stats.cflags = tty->termios->c_cflag; - portp->stats.iflags = tty->termios->c_iflag; - portp->stats.oflags = tty->termios->c_oflag; - portp->stats.lflags = tty->termios->c_lflag; - } - } - spin_unlock_irqrestore(&stallion_lock, flags); - - head = portp->tx.head; - tail = portp->tx.tail; - portp->stats.txbuffered = (head >= tail) ? (head - tail) : - (STL_TXBUFSIZE - (tail - head)); - - portp->stats.signals = (unsigned long) stl_getsignals(portp); - mutex_unlock(&portp->port.mutex); - - return copy_to_user(cp, &portp->stats, - sizeof(comstats_t)) ? -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Clear the port stats structure. We also return it zeroed out... - */ - -static int stl_clrportstats(struct stlport *portp, comstats_t __user *cp) -{ - comstats_t stl_comstats; - - if (!portp) { - if (copy_from_user(&stl_comstats, cp, sizeof(comstats_t))) - return -EFAULT; - portp = stl_getport(stl_comstats.brd, stl_comstats.panel, - stl_comstats.port); - if (portp == NULL) - return -ENODEV; - } - - mutex_lock(&portp->port.mutex); - memset(&portp->stats, 0, sizeof(comstats_t)); - portp->stats.brd = portp->brdnr; - portp->stats.panel = portp->panelnr; - portp->stats.port = portp->portnr; - mutex_unlock(&portp->port.mutex); - return copy_to_user(cp, &portp->stats, - sizeof(comstats_t)) ? -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Return the entire driver ports structure to a user app. - */ - -static int stl_getportstruct(struct stlport __user *arg) -{ - struct stlport stl_dummyport; - struct stlport *portp; - - if (copy_from_user(&stl_dummyport, arg, sizeof(struct stlport))) - return -EFAULT; - portp = stl_getport(stl_dummyport.brdnr, stl_dummyport.panelnr, - stl_dummyport.portnr); - if (!portp) - return -ENODEV; - return copy_to_user(arg, portp, sizeof(struct stlport)) ? -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * Return the entire driver board structure to a user app. - */ - -static int stl_getbrdstruct(struct stlbrd __user *arg) -{ - struct stlbrd stl_dummybrd; - struct stlbrd *brdp; - - if (copy_from_user(&stl_dummybrd, arg, sizeof(struct stlbrd))) - return -EFAULT; - if (stl_dummybrd.brdnr >= STL_MAXBRDS) - return -ENODEV; - brdp = stl_brds[stl_dummybrd.brdnr]; - if (!brdp) - return -ENODEV; - return copy_to_user(arg, brdp, sizeof(struct stlbrd)) ? -EFAULT : 0; -} - -/*****************************************************************************/ - -/* - * The "staliomem" device is also required to do some special operations - * on the board and/or ports. In this driver it is mostly used for stats - * collection. - */ - -static long stl_memioctl(struct file *fp, unsigned int cmd, unsigned long arg) -{ - int brdnr, rc; - void __user *argp = (void __user *)arg; - - pr_debug("stl_memioctl(fp=%p,cmd=%x,arg=%lx)\n", fp, cmd,arg); - - brdnr = iminor(fp->f_dentry->d_inode); - if (brdnr >= STL_MAXBRDS) - return -ENODEV; - rc = 0; - - switch (cmd) { - case COM_GETPORTSTATS: - rc = stl_getportstats(NULL, NULL, argp); - break; - case COM_CLRPORTSTATS: - rc = stl_clrportstats(NULL, argp); - break; - case COM_GETBRDSTATS: - rc = stl_getbrdstats(argp); - break; - case COM_READPORT: - rc = stl_getportstruct(argp); - break; - case COM_READBOARD: - rc = stl_getbrdstruct(argp); - break; - default: - rc = -ENOIOCTLCMD; - break; - } - return rc; -} - -static const struct tty_operations stl_ops = { - .open = stl_open, - .close = stl_close, - .write = stl_write, - .put_char = stl_putchar, - .flush_chars = stl_flushchars, - .write_room = stl_writeroom, - .chars_in_buffer = stl_charsinbuffer, - .ioctl = stl_ioctl, - .set_termios = stl_settermios, - .throttle = stl_throttle, - .unthrottle = stl_unthrottle, - .stop = stl_stop, - .start = stl_start, - .hangup = stl_hangup, - .flush_buffer = stl_flushbuffer, - .break_ctl = stl_breakctl, - .wait_until_sent = stl_waituntilsent, - .send_xchar = stl_sendxchar, - .tiocmget = stl_tiocmget, - .tiocmset = stl_tiocmset, - .proc_fops = &stl_proc_fops, -}; - -static const struct tty_port_operations stl_port_ops = { - .carrier_raised = stl_carrier_raised, - .dtr_rts = stl_dtr_rts, - .activate = stl_activate, - .shutdown = stl_shutdown, -}; - -/*****************************************************************************/ -/* CD1400 HARDWARE FUNCTIONS */ -/*****************************************************************************/ - -/* - * These functions get/set/update the registers of the cd1400 UARTs. - * Access to the cd1400 registers is via an address/data io port pair. - * (Maybe should make this inline...) - */ - -static int stl_cd1400getreg(struct stlport *portp, int regnr) -{ - outb((regnr + portp->uartaddr), portp->ioaddr); - return inb(portp->ioaddr + EREG_DATA); -} - -static void stl_cd1400setreg(struct stlport *portp, int regnr, int value) -{ - outb(regnr + portp->uartaddr, portp->ioaddr); - outb(value, portp->ioaddr + EREG_DATA); -} - -static int stl_cd1400updatereg(struct stlport *portp, int regnr, int value) -{ - outb(regnr + portp->uartaddr, portp->ioaddr); - if (inb(portp->ioaddr + EREG_DATA) != value) { - outb(value, portp->ioaddr + EREG_DATA); - return 1; - } - return 0; -} - -/*****************************************************************************/ - -/* - * Inbitialize the UARTs in a panel. We don't care what sort of board - * these ports are on - since the port io registers are almost - * identical when dealing with ports. - */ - -static int stl_cd1400panelinit(struct stlbrd *brdp, struct stlpanel *panelp) -{ - unsigned int gfrcr; - int chipmask, i, j; - int nrchips, uartaddr, ioaddr; - unsigned long flags; - - pr_debug("stl_panelinit(brdp=%p,panelp=%p)\n", brdp, panelp); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(panelp->brdnr, panelp->pagenr); - -/* - * Check that each chip is present and started up OK. - */ - chipmask = 0; - nrchips = panelp->nrports / CD1400_PORTS; - for (i = 0; i < nrchips; i++) { - if (brdp->brdtype == BRD_ECHPCI) { - outb((panelp->pagenr + (i >> 1)), brdp->ioctrl); - ioaddr = panelp->iobase; - } else - ioaddr = panelp->iobase + (EREG_BANKSIZE * (i >> 1)); - uartaddr = (i & 0x01) ? 0x080 : 0; - outb((GFRCR + uartaddr), ioaddr); - outb(0, (ioaddr + EREG_DATA)); - outb((CCR + uartaddr), ioaddr); - outb(CCR_RESETFULL, (ioaddr + EREG_DATA)); - outb(CCR_RESETFULL, (ioaddr + EREG_DATA)); - outb((GFRCR + uartaddr), ioaddr); - for (j = 0; j < CCR_MAXWAIT; j++) - if ((gfrcr = inb(ioaddr + EREG_DATA)) != 0) - break; - - if ((j >= CCR_MAXWAIT) || (gfrcr < 0x40) || (gfrcr > 0x60)) { - printk("STALLION: cd1400 not responding, " - "brd=%d panel=%d chip=%d\n", - panelp->brdnr, panelp->panelnr, i); - continue; - } - chipmask |= (0x1 << i); - outb((PPR + uartaddr), ioaddr); - outb(PPR_SCALAR, (ioaddr + EREG_DATA)); - } - - BRDDISABLE(panelp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - return chipmask; -} - -/*****************************************************************************/ - -/* - * Initialize hardware specific port registers. - */ - -static void stl_cd1400portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp) -{ - unsigned long flags; - pr_debug("stl_cd1400portinit(brdp=%p,panelp=%p,portp=%p)\n", brdp, - panelp, portp); - - if ((brdp == NULL) || (panelp == NULL) || - (portp == NULL)) - return; - - spin_lock_irqsave(&brd_lock, flags); - portp->ioaddr = panelp->iobase + (((brdp->brdtype == BRD_ECHPCI) || - (portp->portnr < 8)) ? 0 : EREG_BANKSIZE); - portp->uartaddr = (portp->portnr & 0x04) << 5; - portp->pagenr = panelp->pagenr + (portp->portnr >> 3); - - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - stl_cd1400setreg(portp, LIVR, (portp->portnr << 3)); - portp->hwid = stl_cd1400getreg(portp, GFRCR); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Wait for the command register to be ready. We will poll this, - * since it won't usually take too long to be ready. - */ - -static void stl_cd1400ccrwait(struct stlport *portp) -{ - int i; - - for (i = 0; i < CCR_MAXWAIT; i++) - if (stl_cd1400getreg(portp, CCR) == 0) - return; - - printk("STALLION: cd1400 not responding, port=%d panel=%d brd=%d\n", - portp->portnr, portp->panelnr, portp->brdnr); -} - -/*****************************************************************************/ - -/* - * Set up the cd1400 registers for a port based on the termios port - * settings. - */ - -static void stl_cd1400setport(struct stlport *portp, struct ktermios *tiosp) -{ - struct stlbrd *brdp; - unsigned long flags; - unsigned int clkdiv, baudrate; - unsigned char cor1, cor2, cor3; - unsigned char cor4, cor5, ccr; - unsigned char srer, sreron, sreroff; - unsigned char mcor1, mcor2, rtpr; - unsigned char clk, div; - - cor1 = 0; - cor2 = 0; - cor3 = 0; - cor4 = 0; - cor5 = 0; - ccr = 0; - rtpr = 0; - clk = 0; - div = 0; - mcor1 = 0; - mcor2 = 0; - sreron = 0; - sreroff = 0; - - brdp = stl_brds[portp->brdnr]; - if (brdp == NULL) - return; - -/* - * Set up the RX char ignore mask with those RX error types we - * can ignore. We can get the cd1400 to help us out a little here, - * it will ignore parity errors and breaks for us. - */ - portp->rxignoremsk = 0; - if (tiosp->c_iflag & IGNPAR) { - portp->rxignoremsk |= (ST_PARITY | ST_FRAMING | ST_OVERRUN); - cor1 |= COR1_PARIGNORE; - } - if (tiosp->c_iflag & IGNBRK) { - portp->rxignoremsk |= ST_BREAK; - cor4 |= COR4_IGNBRK; - } - - portp->rxmarkmsk = ST_OVERRUN; - if (tiosp->c_iflag & (INPCK | PARMRK)) - portp->rxmarkmsk |= (ST_PARITY | ST_FRAMING); - if (tiosp->c_iflag & BRKINT) - portp->rxmarkmsk |= ST_BREAK; - -/* - * Go through the char size, parity and stop bits and set all the - * option register appropriately. - */ - switch (tiosp->c_cflag & CSIZE) { - case CS5: - cor1 |= COR1_CHL5; - break; - case CS6: - cor1 |= COR1_CHL6; - break; - case CS7: - cor1 |= COR1_CHL7; - break; - default: - cor1 |= COR1_CHL8; - break; - } - - if (tiosp->c_cflag & CSTOPB) - cor1 |= COR1_STOP2; - else - cor1 |= COR1_STOP1; - - if (tiosp->c_cflag & PARENB) { - if (tiosp->c_cflag & PARODD) - cor1 |= (COR1_PARENB | COR1_PARODD); - else - cor1 |= (COR1_PARENB | COR1_PAREVEN); - } else { - cor1 |= COR1_PARNONE; - } - -/* - * Set the RX FIFO threshold at 6 chars. This gives a bit of breathing - * space for hardware flow control and the like. This should be set to - * VMIN. Also here we will set the RX data timeout to 10ms - this should - * really be based on VTIME. - */ - cor3 |= FIFO_RXTHRESHOLD; - rtpr = 2; - -/* - * Calculate the baud rate timers. For now we will just assume that - * the input and output baud are the same. Could have used a baud - * table here, but this way we can generate virtually any baud rate - * we like! - */ - baudrate = tiosp->c_cflag & CBAUD; - if (baudrate & CBAUDEX) { - baudrate &= ~CBAUDEX; - if ((baudrate < 1) || (baudrate > 4)) - tiosp->c_cflag &= ~CBAUDEX; - else - baudrate += 15; - } - baudrate = stl_baudrates[baudrate]; - if ((tiosp->c_cflag & CBAUD) == B38400) { - if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - baudrate = 57600; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - baudrate = 115200; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - baudrate = 230400; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - baudrate = 460800; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) - baudrate = (portp->baud_base / portp->custom_divisor); - } - if (baudrate > STL_CD1400MAXBAUD) - baudrate = STL_CD1400MAXBAUD; - - if (baudrate > 0) { - for (clk = 0; clk < CD1400_NUMCLKS; clk++) { - clkdiv = (portp->clk / stl_cd1400clkdivs[clk]) / baudrate; - if (clkdiv < 0x100) - break; - } - div = (unsigned char) clkdiv; - } - -/* - * Check what form of modem signaling is required and set it up. - */ - if ((tiosp->c_cflag & CLOCAL) == 0) { - mcor1 |= MCOR1_DCD; - mcor2 |= MCOR2_DCD; - sreron |= SRER_MODEM; - portp->port.flags |= ASYNC_CHECK_CD; - } else - portp->port.flags &= ~ASYNC_CHECK_CD; - -/* - * Setup cd1400 enhanced modes if we can. In particular we want to - * handle as much of the flow control as possible automatically. As - * well as saving a few CPU cycles it will also greatly improve flow - * control reliability. - */ - if (tiosp->c_iflag & IXON) { - cor2 |= COR2_TXIBE; - cor3 |= COR3_SCD12; - if (tiosp->c_iflag & IXANY) - cor2 |= COR2_IXM; - } - - if (tiosp->c_cflag & CRTSCTS) { - cor2 |= COR2_CTSAE; - mcor1 |= FIFO_RTSTHRESHOLD; - } - -/* - * All cd1400 register values calculated so go through and set - * them all up. - */ - - pr_debug("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", - portp->portnr, portp->panelnr, portp->brdnr); - pr_debug(" cor1=%x cor2=%x cor3=%x cor4=%x cor5=%x\n", - cor1, cor2, cor3, cor4, cor5); - pr_debug(" mcor1=%x mcor2=%x rtpr=%x sreron=%x sreroff=%x\n", - mcor1, mcor2, rtpr, sreron, sreroff); - pr_debug(" tcor=%x tbpr=%x rcor=%x rbpr=%x\n", clk, div, clk, div); - pr_debug(" schr1=%x schr2=%x schr3=%x schr4=%x\n", - tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], - tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP]); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); - srer = stl_cd1400getreg(portp, SRER); - stl_cd1400setreg(portp, SRER, 0); - if (stl_cd1400updatereg(portp, COR1, cor1)) - ccr = 1; - if (stl_cd1400updatereg(portp, COR2, cor2)) - ccr = 1; - if (stl_cd1400updatereg(portp, COR3, cor3)) - ccr = 1; - if (ccr) { - stl_cd1400ccrwait(portp); - stl_cd1400setreg(portp, CCR, CCR_CORCHANGE); - } - stl_cd1400setreg(portp, COR4, cor4); - stl_cd1400setreg(portp, COR5, cor5); - stl_cd1400setreg(portp, MCOR1, mcor1); - stl_cd1400setreg(portp, MCOR2, mcor2); - if (baudrate > 0) { - stl_cd1400setreg(portp, TCOR, clk); - stl_cd1400setreg(portp, TBPR, div); - stl_cd1400setreg(portp, RCOR, clk); - stl_cd1400setreg(portp, RBPR, div); - } - stl_cd1400setreg(portp, SCHR1, tiosp->c_cc[VSTART]); - stl_cd1400setreg(portp, SCHR2, tiosp->c_cc[VSTOP]); - stl_cd1400setreg(portp, SCHR3, tiosp->c_cc[VSTART]); - stl_cd1400setreg(portp, SCHR4, tiosp->c_cc[VSTOP]); - stl_cd1400setreg(portp, RTPR, rtpr); - mcor1 = stl_cd1400getreg(portp, MSVR1); - if (mcor1 & MSVR1_DCD) - portp->sigs |= TIOCM_CD; - else - portp->sigs &= ~TIOCM_CD; - stl_cd1400setreg(portp, SRER, ((srer & ~sreroff) | sreron)); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Set the state of the DTR and RTS signals. - */ - -static void stl_cd1400setsignals(struct stlport *portp, int dtr, int rts) -{ - unsigned char msvr1, msvr2; - unsigned long flags; - - pr_debug("stl_cd1400setsignals(portp=%p,dtr=%d,rts=%d)\n", - portp, dtr, rts); - - msvr1 = 0; - msvr2 = 0; - if (dtr > 0) - msvr1 = MSVR1_DTR; - if (rts > 0) - msvr2 = MSVR2_RTS; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - if (rts >= 0) - stl_cd1400setreg(portp, MSVR2, msvr2); - if (dtr >= 0) - stl_cd1400setreg(portp, MSVR1, msvr1); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Return the state of the signals. - */ - -static int stl_cd1400getsignals(struct stlport *portp) -{ - unsigned char msvr1, msvr2; - unsigned long flags; - int sigs; - - pr_debug("stl_cd1400getsignals(portp=%p)\n", portp); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - msvr1 = stl_cd1400getreg(portp, MSVR1); - msvr2 = stl_cd1400getreg(portp, MSVR2); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - - sigs = 0; - sigs |= (msvr1 & MSVR1_DCD) ? TIOCM_CD : 0; - sigs |= (msvr1 & MSVR1_CTS) ? TIOCM_CTS : 0; - sigs |= (msvr1 & MSVR1_DTR) ? TIOCM_DTR : 0; - sigs |= (msvr2 & MSVR2_RTS) ? TIOCM_RTS : 0; -#if 0 - sigs |= (msvr1 & MSVR1_RI) ? TIOCM_RI : 0; - sigs |= (msvr1 & MSVR1_DSR) ? TIOCM_DSR : 0; -#else - sigs |= TIOCM_DSR; -#endif - return sigs; -} - -/*****************************************************************************/ - -/* - * Enable/Disable the Transmitter and/or Receiver. - */ - -static void stl_cd1400enablerxtx(struct stlport *portp, int rx, int tx) -{ - unsigned char ccr; - unsigned long flags; - - pr_debug("stl_cd1400enablerxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx, tx); - - ccr = 0; - - if (tx == 0) - ccr |= CCR_TXDISABLE; - else if (tx > 0) - ccr |= CCR_TXENABLE; - if (rx == 0) - ccr |= CCR_RXDISABLE; - else if (rx > 0) - ccr |= CCR_RXENABLE; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - stl_cd1400ccrwait(portp); - stl_cd1400setreg(portp, CCR, ccr); - stl_cd1400ccrwait(portp); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Start/stop the Transmitter and/or Receiver. - */ - -static void stl_cd1400startrxtx(struct stlport *portp, int rx, int tx) -{ - unsigned char sreron, sreroff; - unsigned long flags; - - pr_debug("stl_cd1400startrxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx, tx); - - sreron = 0; - sreroff = 0; - if (tx == 0) - sreroff |= (SRER_TXDATA | SRER_TXEMPTY); - else if (tx == 1) - sreron |= SRER_TXDATA; - else if (tx >= 2) - sreron |= SRER_TXEMPTY; - if (rx == 0) - sreroff |= SRER_RXDATA; - else if (rx > 0) - sreron |= SRER_RXDATA; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - stl_cd1400setreg(portp, SRER, - ((stl_cd1400getreg(portp, SRER) & ~sreroff) | sreron)); - BRDDISABLE(portp->brdnr); - if (tx > 0) - set_bit(ASYI_TXBUSY, &portp->istate); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Disable all interrupts from this port. - */ - -static void stl_cd1400disableintrs(struct stlport *portp) -{ - unsigned long flags; - - pr_debug("stl_cd1400disableintrs(portp=%p)\n", portp); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - stl_cd1400setreg(portp, SRER, 0); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -static void stl_cd1400sendbreak(struct stlport *portp, int len) -{ - unsigned long flags; - - pr_debug("stl_cd1400sendbreak(portp=%p,len=%d)\n", portp, len); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - stl_cd1400setreg(portp, SRER, - ((stl_cd1400getreg(portp, SRER) & ~SRER_TXDATA) | - SRER_TXEMPTY)); - BRDDISABLE(portp->brdnr); - portp->brklen = len; - if (len == 1) - portp->stats.txbreaks++; - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Take flow control actions... - */ - -static void stl_cd1400flowctrl(struct stlport *portp, int state) -{ - struct tty_struct *tty; - unsigned long flags; - - pr_debug("stl_cd1400flowctrl(portp=%p,state=%x)\n", portp, state); - - if (portp == NULL) - return; - tty = tty_port_tty_get(&portp->port); - if (tty == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - - if (state) { - if (tty->termios->c_iflag & IXOFF) { - stl_cd1400ccrwait(portp); - stl_cd1400setreg(portp, CCR, CCR_SENDSCHR1); - portp->stats.rxxon++; - stl_cd1400ccrwait(portp); - } -/* - * Question: should we return RTS to what it was before? It may - * have been set by an ioctl... Suppose not, since if you have - * hardware flow control set then it is pretty silly to go and - * set the RTS line by hand. - */ - if (tty->termios->c_cflag & CRTSCTS) { - stl_cd1400setreg(portp, MCOR1, - (stl_cd1400getreg(portp, MCOR1) | - FIFO_RTSTHRESHOLD)); - stl_cd1400setreg(portp, MSVR2, MSVR2_RTS); - portp->stats.rxrtson++; - } - } else { - if (tty->termios->c_iflag & IXOFF) { - stl_cd1400ccrwait(portp); - stl_cd1400setreg(portp, CCR, CCR_SENDSCHR2); - portp->stats.rxxoff++; - stl_cd1400ccrwait(portp); - } - if (tty->termios->c_cflag & CRTSCTS) { - stl_cd1400setreg(portp, MCOR1, - (stl_cd1400getreg(portp, MCOR1) & 0xf0)); - stl_cd1400setreg(portp, MSVR2, 0); - portp->stats.rxrtsoff++; - } - } - - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - tty_kref_put(tty); -} - -/*****************************************************************************/ - -/* - * Send a flow control character... - */ - -static void stl_cd1400sendflow(struct stlport *portp, int state) -{ - struct tty_struct *tty; - unsigned long flags; - - pr_debug("stl_cd1400sendflow(portp=%p,state=%x)\n", portp, state); - - if (portp == NULL) - return; - tty = tty_port_tty_get(&portp->port); - if (tty == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - if (state) { - stl_cd1400ccrwait(portp); - stl_cd1400setreg(portp, CCR, CCR_SENDSCHR1); - portp->stats.rxxon++; - stl_cd1400ccrwait(portp); - } else { - stl_cd1400ccrwait(portp); - stl_cd1400setreg(portp, CCR, CCR_SENDSCHR2); - portp->stats.rxxoff++; - stl_cd1400ccrwait(portp); - } - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - tty_kref_put(tty); -} - -/*****************************************************************************/ - -static void stl_cd1400flush(struct stlport *portp) -{ - unsigned long flags; - - pr_debug("stl_cd1400flush(portp=%p)\n", portp); - - if (portp == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); - stl_cd1400ccrwait(portp); - stl_cd1400setreg(portp, CCR, CCR_TXFLUSHFIFO); - stl_cd1400ccrwait(portp); - portp->tx.tail = portp->tx.head; - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Return the current state of data flow on this port. This is only - * really interesting when determining if data has fully completed - * transmission or not... This is easy for the cd1400, it accurately - * maintains the busy port flag. - */ - -static int stl_cd1400datastate(struct stlport *portp) -{ - pr_debug("stl_cd1400datastate(portp=%p)\n", portp); - - if (portp == NULL) - return 0; - - return test_bit(ASYI_TXBUSY, &portp->istate) ? 1 : 0; -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for cd1400 EasyIO boards. - */ - -static void stl_cd1400eiointr(struct stlpanel *panelp, unsigned int iobase) -{ - unsigned char svrtype; - - pr_debug("stl_cd1400eiointr(panelp=%p,iobase=%x)\n", panelp, iobase); - - spin_lock(&brd_lock); - outb(SVRR, iobase); - svrtype = inb(iobase + EREG_DATA); - if (panelp->nrports > 4) { - outb((SVRR + 0x80), iobase); - svrtype |= inb(iobase + EREG_DATA); - } - - if (svrtype & SVRR_RX) - stl_cd1400rxisr(panelp, iobase); - else if (svrtype & SVRR_TX) - stl_cd1400txisr(panelp, iobase); - else if (svrtype & SVRR_MDM) - stl_cd1400mdmisr(panelp, iobase); - - spin_unlock(&brd_lock); -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for cd1400 panels. - */ - -static void stl_cd1400echintr(struct stlpanel *panelp, unsigned int iobase) -{ - unsigned char svrtype; - - pr_debug("stl_cd1400echintr(panelp=%p,iobase=%x)\n", panelp, iobase); - - outb(SVRR, iobase); - svrtype = inb(iobase + EREG_DATA); - outb((SVRR + 0x80), iobase); - svrtype |= inb(iobase + EREG_DATA); - if (svrtype & SVRR_RX) - stl_cd1400rxisr(panelp, iobase); - else if (svrtype & SVRR_TX) - stl_cd1400txisr(panelp, iobase); - else if (svrtype & SVRR_MDM) - stl_cd1400mdmisr(panelp, iobase); -} - - -/*****************************************************************************/ - -/* - * Unfortunately we need to handle breaks in the TX data stream, since - * this is the only way to generate them on the cd1400. - */ - -static int stl_cd1400breakisr(struct stlport *portp, int ioaddr) -{ - if (portp->brklen == 1) { - outb((COR2 + portp->uartaddr), ioaddr); - outb((inb(ioaddr + EREG_DATA) | COR2_ETC), - (ioaddr + EREG_DATA)); - outb((TDR + portp->uartaddr), ioaddr); - outb(ETC_CMD, (ioaddr + EREG_DATA)); - outb(ETC_STARTBREAK, (ioaddr + EREG_DATA)); - outb((SRER + portp->uartaddr), ioaddr); - outb((inb(ioaddr + EREG_DATA) & ~(SRER_TXDATA | SRER_TXEMPTY)), - (ioaddr + EREG_DATA)); - return 1; - } else if (portp->brklen > 1) { - outb((TDR + portp->uartaddr), ioaddr); - outb(ETC_CMD, (ioaddr + EREG_DATA)); - outb(ETC_STOPBREAK, (ioaddr + EREG_DATA)); - portp->brklen = -1; - return 1; - } else { - outb((COR2 + portp->uartaddr), ioaddr); - outb((inb(ioaddr + EREG_DATA) & ~COR2_ETC), - (ioaddr + EREG_DATA)); - portp->brklen = 0; - } - return 0; -} - -/*****************************************************************************/ - -/* - * Transmit interrupt handler. This has gotta be fast! Handling TX - * chars is pretty simple, stuff as many as possible from the TX buffer - * into the cd1400 FIFO. Must also handle TX breaks here, since they - * are embedded as commands in the data stream. Oh no, had to use a goto! - * This could be optimized more, will do when I get time... - * In practice it is possible that interrupts are enabled but that the - * port has been hung up. Need to handle not having any TX buffer here, - * this is done by using the side effect that head and tail will also - * be NULL if the buffer has been freed. - */ - -static void stl_cd1400txisr(struct stlpanel *panelp, int ioaddr) -{ - struct stlport *portp; - int len, stlen; - char *head, *tail; - unsigned char ioack, srer; - struct tty_struct *tty; - - pr_debug("stl_cd1400txisr(panelp=%p,ioaddr=%x)\n", panelp, ioaddr); - - ioack = inb(ioaddr + EREG_TXACK); - if (((ioack & panelp->ackmask) != 0) || - ((ioack & ACK_TYPMASK) != ACK_TYPTX)) { - printk("STALLION: bad TX interrupt ack value=%x\n", ioack); - return; - } - portp = panelp->ports[(ioack >> 3)]; - -/* - * Unfortunately we need to handle breaks in the data stream, since - * this is the only way to generate them on the cd1400. Do it now if - * a break is to be sent. - */ - if (portp->brklen != 0) - if (stl_cd1400breakisr(portp, ioaddr)) - goto stl_txalldone; - - head = portp->tx.head; - tail = portp->tx.tail; - len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); - if ((len == 0) || ((len < STL_TXBUFLOW) && - (test_bit(ASYI_TXLOW, &portp->istate) == 0))) { - set_bit(ASYI_TXLOW, &portp->istate); - tty = tty_port_tty_get(&portp->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } - } - - if (len == 0) { - outb((SRER + portp->uartaddr), ioaddr); - srer = inb(ioaddr + EREG_DATA); - if (srer & SRER_TXDATA) { - srer = (srer & ~SRER_TXDATA) | SRER_TXEMPTY; - } else { - srer &= ~(SRER_TXDATA | SRER_TXEMPTY); - clear_bit(ASYI_TXBUSY, &portp->istate); - } - outb(srer, (ioaddr + EREG_DATA)); - } else { - len = min(len, CD1400_TXFIFOSIZE); - portp->stats.txtotal += len; - stlen = min_t(unsigned int, len, - (portp->tx.buf + STL_TXBUFSIZE) - tail); - outb((TDR + portp->uartaddr), ioaddr); - outsb((ioaddr + EREG_DATA), tail, stlen); - len -= stlen; - tail += stlen; - if (tail >= (portp->tx.buf + STL_TXBUFSIZE)) - tail = portp->tx.buf; - if (len > 0) { - outsb((ioaddr + EREG_DATA), tail, len); - tail += len; - } - portp->tx.tail = tail; - } - -stl_txalldone: - outb((EOSRR + portp->uartaddr), ioaddr); - outb(0, (ioaddr + EREG_DATA)); -} - -/*****************************************************************************/ - -/* - * Receive character interrupt handler. Determine if we have good chars - * or bad chars and then process appropriately. Good chars are easy - * just shove the lot into the RX buffer and set all status byte to 0. - * If a bad RX char then process as required. This routine needs to be - * fast! In practice it is possible that we get an interrupt on a port - * that is closed. This can happen on hangups - since they completely - * shutdown a port not in user context. Need to handle this case. - */ - -static void stl_cd1400rxisr(struct stlpanel *panelp, int ioaddr) -{ - struct stlport *portp; - struct tty_struct *tty; - unsigned int ioack, len, buflen; - unsigned char status; - char ch; - - pr_debug("stl_cd1400rxisr(panelp=%p,ioaddr=%x)\n", panelp, ioaddr); - - ioack = inb(ioaddr + EREG_RXACK); - if ((ioack & panelp->ackmask) != 0) { - printk("STALLION: bad RX interrupt ack value=%x\n", ioack); - return; - } - portp = panelp->ports[(ioack >> 3)]; - tty = tty_port_tty_get(&portp->port); - - if ((ioack & ACK_TYPMASK) == ACK_TYPRXGOOD) { - outb((RDCR + portp->uartaddr), ioaddr); - len = inb(ioaddr + EREG_DATA); - if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) { - len = min_t(unsigned int, len, sizeof(stl_unwanted)); - outb((RDSR + portp->uartaddr), ioaddr); - insb((ioaddr + EREG_DATA), &stl_unwanted[0], len); - portp->stats.rxlost += len; - portp->stats.rxtotal += len; - } else { - len = min(len, buflen); - if (len > 0) { - unsigned char *ptr; - outb((RDSR + portp->uartaddr), ioaddr); - tty_prepare_flip_string(tty, &ptr, len); - insb((ioaddr + EREG_DATA), ptr, len); - tty_schedule_flip(tty); - portp->stats.rxtotal += len; - } - } - } else if ((ioack & ACK_TYPMASK) == ACK_TYPRXBAD) { - outb((RDSR + portp->uartaddr), ioaddr); - status = inb(ioaddr + EREG_DATA); - ch = inb(ioaddr + EREG_DATA); - if (status & ST_PARITY) - portp->stats.rxparity++; - if (status & ST_FRAMING) - portp->stats.rxframing++; - if (status & ST_OVERRUN) - portp->stats.rxoverrun++; - if (status & ST_BREAK) - portp->stats.rxbreaks++; - if (status & ST_SCHARMASK) { - if ((status & ST_SCHARMASK) == ST_SCHAR1) - portp->stats.txxon++; - if ((status & ST_SCHARMASK) == ST_SCHAR2) - portp->stats.txxoff++; - goto stl_rxalldone; - } - if (tty != NULL && (portp->rxignoremsk & status) == 0) { - if (portp->rxmarkmsk & status) { - if (status & ST_BREAK) { - status = TTY_BREAK; - if (portp->port.flags & ASYNC_SAK) { - do_SAK(tty); - BRDENABLE(portp->brdnr, portp->pagenr); - } - } else if (status & ST_PARITY) - status = TTY_PARITY; - else if (status & ST_FRAMING) - status = TTY_FRAME; - else if(status & ST_OVERRUN) - status = TTY_OVERRUN; - else - status = 0; - } else - status = 0; - tty_insert_flip_char(tty, ch, status); - tty_schedule_flip(tty); - } - } else { - printk("STALLION: bad RX interrupt ack value=%x\n", ioack); - tty_kref_put(tty); - return; - } - -stl_rxalldone: - tty_kref_put(tty); - outb((EOSRR + portp->uartaddr), ioaddr); - outb(0, (ioaddr + EREG_DATA)); -} - -/*****************************************************************************/ - -/* - * Modem interrupt handler. The is called when the modem signal line - * (DCD) has changed state. Leave most of the work to the off-level - * processing routine. - */ - -static void stl_cd1400mdmisr(struct stlpanel *panelp, int ioaddr) -{ - struct stlport *portp; - unsigned int ioack; - unsigned char misr; - - pr_debug("stl_cd1400mdmisr(panelp=%p)\n", panelp); - - ioack = inb(ioaddr + EREG_MDACK); - if (((ioack & panelp->ackmask) != 0) || - ((ioack & ACK_TYPMASK) != ACK_TYPMDM)) { - printk("STALLION: bad MODEM interrupt ack value=%x\n", ioack); - return; - } - portp = panelp->ports[(ioack >> 3)]; - - outb((MISR + portp->uartaddr), ioaddr); - misr = inb(ioaddr + EREG_DATA); - if (misr & MISR_DCD) { - stl_cd_change(portp); - portp->stats.modem++; - } - - outb((EOSRR + portp->uartaddr), ioaddr); - outb(0, (ioaddr + EREG_DATA)); -} - -/*****************************************************************************/ -/* SC26198 HARDWARE FUNCTIONS */ -/*****************************************************************************/ - -/* - * These functions get/set/update the registers of the sc26198 UARTs. - * Access to the sc26198 registers is via an address/data io port pair. - * (Maybe should make this inline...) - */ - -static int stl_sc26198getreg(struct stlport *portp, int regnr) -{ - outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR)); - return inb(portp->ioaddr + XP_DATA); -} - -static void stl_sc26198setreg(struct stlport *portp, int regnr, int value) -{ - outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR)); - outb(value, (portp->ioaddr + XP_DATA)); -} - -static int stl_sc26198updatereg(struct stlport *portp, int regnr, int value) -{ - outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR)); - if (inb(portp->ioaddr + XP_DATA) != value) { - outb(value, (portp->ioaddr + XP_DATA)); - return 1; - } - return 0; -} - -/*****************************************************************************/ - -/* - * Functions to get and set the sc26198 global registers. - */ - -static int stl_sc26198getglobreg(struct stlport *portp, int regnr) -{ - outb(regnr, (portp->ioaddr + XP_ADDR)); - return inb(portp->ioaddr + XP_DATA); -} - -#if 0 -static void stl_sc26198setglobreg(struct stlport *portp, int regnr, int value) -{ - outb(regnr, (portp->ioaddr + XP_ADDR)); - outb(value, (portp->ioaddr + XP_DATA)); -} -#endif - -/*****************************************************************************/ - -/* - * Inbitialize the UARTs in a panel. We don't care what sort of board - * these ports are on - since the port io registers are almost - * identical when dealing with ports. - */ - -static int stl_sc26198panelinit(struct stlbrd *brdp, struct stlpanel *panelp) -{ - int chipmask, i; - int nrchips, ioaddr; - - pr_debug("stl_sc26198panelinit(brdp=%p,panelp=%p)\n", brdp, panelp); - - BRDENABLE(panelp->brdnr, panelp->pagenr); - -/* - * Check that each chip is present and started up OK. - */ - chipmask = 0; - nrchips = (panelp->nrports + 4) / SC26198_PORTS; - if (brdp->brdtype == BRD_ECHPCI) - outb(panelp->pagenr, brdp->ioctrl); - - for (i = 0; i < nrchips; i++) { - ioaddr = panelp->iobase + (i * 4); - outb(SCCR, (ioaddr + XP_ADDR)); - outb(CR_RESETALL, (ioaddr + XP_DATA)); - outb(TSTR, (ioaddr + XP_ADDR)); - if (inb(ioaddr + XP_DATA) != 0) { - printk("STALLION: sc26198 not responding, " - "brd=%d panel=%d chip=%d\n", - panelp->brdnr, panelp->panelnr, i); - continue; - } - chipmask |= (0x1 << i); - outb(GCCR, (ioaddr + XP_ADDR)); - outb(GCCR_IVRTYPCHANACK, (ioaddr + XP_DATA)); - outb(WDTRCR, (ioaddr + XP_ADDR)); - outb(0xff, (ioaddr + XP_DATA)); - } - - BRDDISABLE(panelp->brdnr); - return chipmask; -} - -/*****************************************************************************/ - -/* - * Initialize hardware specific port registers. - */ - -static void stl_sc26198portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp) -{ - pr_debug("stl_sc26198portinit(brdp=%p,panelp=%p,portp=%p)\n", brdp, - panelp, portp); - - if ((brdp == NULL) || (panelp == NULL) || - (portp == NULL)) - return; - - portp->ioaddr = panelp->iobase + ((portp->portnr < 8) ? 0 : 4); - portp->uartaddr = (portp->portnr & 0x07) << 4; - portp->pagenr = panelp->pagenr; - portp->hwid = 0x1; - - BRDENABLE(portp->brdnr, portp->pagenr); - stl_sc26198setreg(portp, IOPCR, IOPCR_SETSIGS); - BRDDISABLE(portp->brdnr); -} - -/*****************************************************************************/ - -/* - * Set up the sc26198 registers for a port based on the termios port - * settings. - */ - -static void stl_sc26198setport(struct stlport *portp, struct ktermios *tiosp) -{ - struct stlbrd *brdp; - unsigned long flags; - unsigned int baudrate; - unsigned char mr0, mr1, mr2, clk; - unsigned char imron, imroff, iopr, ipr; - - mr0 = 0; - mr1 = 0; - mr2 = 0; - clk = 0; - iopr = 0; - imron = 0; - imroff = 0; - - brdp = stl_brds[portp->brdnr]; - if (brdp == NULL) - return; - -/* - * Set up the RX char ignore mask with those RX error types we - * can ignore. - */ - portp->rxignoremsk = 0; - if (tiosp->c_iflag & IGNPAR) - portp->rxignoremsk |= (SR_RXPARITY | SR_RXFRAMING | - SR_RXOVERRUN); - if (tiosp->c_iflag & IGNBRK) - portp->rxignoremsk |= SR_RXBREAK; - - portp->rxmarkmsk = SR_RXOVERRUN; - if (tiosp->c_iflag & (INPCK | PARMRK)) - portp->rxmarkmsk |= (SR_RXPARITY | SR_RXFRAMING); - if (tiosp->c_iflag & BRKINT) - portp->rxmarkmsk |= SR_RXBREAK; - -/* - * Go through the char size, parity and stop bits and set all the - * option register appropriately. - */ - switch (tiosp->c_cflag & CSIZE) { - case CS5: - mr1 |= MR1_CS5; - break; - case CS6: - mr1 |= MR1_CS6; - break; - case CS7: - mr1 |= MR1_CS7; - break; - default: - mr1 |= MR1_CS8; - break; - } - - if (tiosp->c_cflag & CSTOPB) - mr2 |= MR2_STOP2; - else - mr2 |= MR2_STOP1; - - if (tiosp->c_cflag & PARENB) { - if (tiosp->c_cflag & PARODD) - mr1 |= (MR1_PARENB | MR1_PARODD); - else - mr1 |= (MR1_PARENB | MR1_PAREVEN); - } else - mr1 |= MR1_PARNONE; - - mr1 |= MR1_ERRBLOCK; - -/* - * Set the RX FIFO threshold at 8 chars. This gives a bit of breathing - * space for hardware flow control and the like. This should be set to - * VMIN. - */ - mr2 |= MR2_RXFIFOHALF; - -/* - * Calculate the baud rate timers. For now we will just assume that - * the input and output baud are the same. The sc26198 has a fixed - * baud rate table, so only discrete baud rates possible. - */ - baudrate = tiosp->c_cflag & CBAUD; - if (baudrate & CBAUDEX) { - baudrate &= ~CBAUDEX; - if ((baudrate < 1) || (baudrate > 4)) - tiosp->c_cflag &= ~CBAUDEX; - else - baudrate += 15; - } - baudrate = stl_baudrates[baudrate]; - if ((tiosp->c_cflag & CBAUD) == B38400) { - if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - baudrate = 57600; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - baudrate = 115200; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - baudrate = 230400; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - baudrate = 460800; - else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) - baudrate = (portp->baud_base / portp->custom_divisor); - } - if (baudrate > STL_SC26198MAXBAUD) - baudrate = STL_SC26198MAXBAUD; - - if (baudrate > 0) - for (clk = 0; clk < SC26198_NRBAUDS; clk++) - if (baudrate <= sc26198_baudtable[clk]) - break; - -/* - * Check what form of modem signaling is required and set it up. - */ - if (tiosp->c_cflag & CLOCAL) { - portp->port.flags &= ~ASYNC_CHECK_CD; - } else { - iopr |= IOPR_DCDCOS; - imron |= IR_IOPORT; - portp->port.flags |= ASYNC_CHECK_CD; - } - -/* - * Setup sc26198 enhanced modes if we can. In particular we want to - * handle as much of the flow control as possible automatically. As - * well as saving a few CPU cycles it will also greatly improve flow - * control reliability. - */ - if (tiosp->c_iflag & IXON) { - mr0 |= MR0_SWFTX | MR0_SWFT; - imron |= IR_XONXOFF; - } else - imroff |= IR_XONXOFF; - - if (tiosp->c_iflag & IXOFF) - mr0 |= MR0_SWFRX; - - if (tiosp->c_cflag & CRTSCTS) { - mr2 |= MR2_AUTOCTS; - mr1 |= MR1_AUTORTS; - } - -/* - * All sc26198 register values calculated so go through and set - * them all up. - */ - - pr_debug("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", - portp->portnr, portp->panelnr, portp->brdnr); - pr_debug(" mr0=%x mr1=%x mr2=%x clk=%x\n", mr0, mr1, mr2, clk); - pr_debug(" iopr=%x imron=%x imroff=%x\n", iopr, imron, imroff); - pr_debug(" schr1=%x schr2=%x schr3=%x schr4=%x\n", - tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], - tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP]); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_sc26198setreg(portp, IMR, 0); - stl_sc26198updatereg(portp, MR0, mr0); - stl_sc26198updatereg(portp, MR1, mr1); - stl_sc26198setreg(portp, SCCR, CR_RXERRBLOCK); - stl_sc26198updatereg(portp, MR2, mr2); - stl_sc26198updatereg(portp, IOPIOR, - ((stl_sc26198getreg(portp, IOPIOR) & ~IPR_CHANGEMASK) | iopr)); - - if (baudrate > 0) { - stl_sc26198setreg(portp, TXCSR, clk); - stl_sc26198setreg(portp, RXCSR, clk); - } - - stl_sc26198setreg(portp, XONCR, tiosp->c_cc[VSTART]); - stl_sc26198setreg(portp, XOFFCR, tiosp->c_cc[VSTOP]); - - ipr = stl_sc26198getreg(portp, IPR); - if (ipr & IPR_DCD) - portp->sigs &= ~TIOCM_CD; - else - portp->sigs |= TIOCM_CD; - - portp->imr = (portp->imr & ~imroff) | imron; - stl_sc26198setreg(portp, IMR, portp->imr); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Set the state of the DTR and RTS signals. - */ - -static void stl_sc26198setsignals(struct stlport *portp, int dtr, int rts) -{ - unsigned char iopioron, iopioroff; - unsigned long flags; - - pr_debug("stl_sc26198setsignals(portp=%p,dtr=%d,rts=%d)\n", portp, - dtr, rts); - - iopioron = 0; - iopioroff = 0; - if (dtr == 0) - iopioroff |= IPR_DTR; - else if (dtr > 0) - iopioron |= IPR_DTR; - if (rts == 0) - iopioroff |= IPR_RTS; - else if (rts > 0) - iopioron |= IPR_RTS; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_sc26198setreg(portp, IOPIOR, - ((stl_sc26198getreg(portp, IOPIOR) & ~iopioroff) | iopioron)); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Return the state of the signals. - */ - -static int stl_sc26198getsignals(struct stlport *portp) -{ - unsigned char ipr; - unsigned long flags; - int sigs; - - pr_debug("stl_sc26198getsignals(portp=%p)\n", portp); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - ipr = stl_sc26198getreg(portp, IPR); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - - sigs = 0; - sigs |= (ipr & IPR_DCD) ? 0 : TIOCM_CD; - sigs |= (ipr & IPR_CTS) ? 0 : TIOCM_CTS; - sigs |= (ipr & IPR_DTR) ? 0: TIOCM_DTR; - sigs |= (ipr & IPR_RTS) ? 0: TIOCM_RTS; - sigs |= TIOCM_DSR; - return sigs; -} - -/*****************************************************************************/ - -/* - * Enable/Disable the Transmitter and/or Receiver. - */ - -static void stl_sc26198enablerxtx(struct stlport *portp, int rx, int tx) -{ - unsigned char ccr; - unsigned long flags; - - pr_debug("stl_sc26198enablerxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx,tx); - - ccr = portp->crenable; - if (tx == 0) - ccr &= ~CR_TXENABLE; - else if (tx > 0) - ccr |= CR_TXENABLE; - if (rx == 0) - ccr &= ~CR_RXENABLE; - else if (rx > 0) - ccr |= CR_RXENABLE; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_sc26198setreg(portp, SCCR, ccr); - BRDDISABLE(portp->brdnr); - portp->crenable = ccr; - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Start/stop the Transmitter and/or Receiver. - */ - -static void stl_sc26198startrxtx(struct stlport *portp, int rx, int tx) -{ - unsigned char imr; - unsigned long flags; - - pr_debug("stl_sc26198startrxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx, tx); - - imr = portp->imr; - if (tx == 0) - imr &= ~IR_TXRDY; - else if (tx == 1) - imr |= IR_TXRDY; - if (rx == 0) - imr &= ~(IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG); - else if (rx > 0) - imr |= IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_sc26198setreg(portp, IMR, imr); - BRDDISABLE(portp->brdnr); - portp->imr = imr; - if (tx > 0) - set_bit(ASYI_TXBUSY, &portp->istate); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Disable all interrupts from this port. - */ - -static void stl_sc26198disableintrs(struct stlport *portp) -{ - unsigned long flags; - - pr_debug("stl_sc26198disableintrs(portp=%p)\n", portp); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - portp->imr = 0; - stl_sc26198setreg(portp, IMR, 0); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -static void stl_sc26198sendbreak(struct stlport *portp, int len) -{ - unsigned long flags; - - pr_debug("stl_sc26198sendbreak(portp=%p,len=%d)\n", portp, len); - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - if (len == 1) { - stl_sc26198setreg(portp, SCCR, CR_TXSTARTBREAK); - portp->stats.txbreaks++; - } else - stl_sc26198setreg(portp, SCCR, CR_TXSTOPBREAK); - - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Take flow control actions... - */ - -static void stl_sc26198flowctrl(struct stlport *portp, int state) -{ - struct tty_struct *tty; - unsigned long flags; - unsigned char mr0; - - pr_debug("stl_sc26198flowctrl(portp=%p,state=%x)\n", portp, state); - - if (portp == NULL) - return; - tty = tty_port_tty_get(&portp->port); - if (tty == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - - if (state) { - if (tty->termios->c_iflag & IXOFF) { - mr0 = stl_sc26198getreg(portp, MR0); - stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); - stl_sc26198setreg(portp, SCCR, CR_TXSENDXON); - mr0 |= MR0_SWFRX; - portp->stats.rxxon++; - stl_sc26198wait(portp); - stl_sc26198setreg(portp, MR0, mr0); - } -/* - * Question: should we return RTS to what it was before? It may - * have been set by an ioctl... Suppose not, since if you have - * hardware flow control set then it is pretty silly to go and - * set the RTS line by hand. - */ - if (tty->termios->c_cflag & CRTSCTS) { - stl_sc26198setreg(portp, MR1, - (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS)); - stl_sc26198setreg(portp, IOPIOR, - (stl_sc26198getreg(portp, IOPIOR) | IOPR_RTS)); - portp->stats.rxrtson++; - } - } else { - if (tty->termios->c_iflag & IXOFF) { - mr0 = stl_sc26198getreg(portp, MR0); - stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); - stl_sc26198setreg(portp, SCCR, CR_TXSENDXOFF); - mr0 &= ~MR0_SWFRX; - portp->stats.rxxoff++; - stl_sc26198wait(portp); - stl_sc26198setreg(portp, MR0, mr0); - } - if (tty->termios->c_cflag & CRTSCTS) { - stl_sc26198setreg(portp, MR1, - (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS)); - stl_sc26198setreg(portp, IOPIOR, - (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS)); - portp->stats.rxrtsoff++; - } - } - - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - tty_kref_put(tty); -} - -/*****************************************************************************/ - -/* - * Send a flow control character. - */ - -static void stl_sc26198sendflow(struct stlport *portp, int state) -{ - struct tty_struct *tty; - unsigned long flags; - unsigned char mr0; - - pr_debug("stl_sc26198sendflow(portp=%p,state=%x)\n", portp, state); - - if (portp == NULL) - return; - tty = tty_port_tty_get(&portp->port); - if (tty == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - if (state) { - mr0 = stl_sc26198getreg(portp, MR0); - stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); - stl_sc26198setreg(portp, SCCR, CR_TXSENDXON); - mr0 |= MR0_SWFRX; - portp->stats.rxxon++; - stl_sc26198wait(portp); - stl_sc26198setreg(portp, MR0, mr0); - } else { - mr0 = stl_sc26198getreg(portp, MR0); - stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); - stl_sc26198setreg(portp, SCCR, CR_TXSENDXOFF); - mr0 &= ~MR0_SWFRX; - portp->stats.rxxoff++; - stl_sc26198wait(portp); - stl_sc26198setreg(portp, MR0, mr0); - } - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - tty_kref_put(tty); -} - -/*****************************************************************************/ - -static void stl_sc26198flush(struct stlport *portp) -{ - unsigned long flags; - - pr_debug("stl_sc26198flush(portp=%p)\n", portp); - - if (portp == NULL) - return; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - stl_sc26198setreg(portp, SCCR, CR_TXRESET); - stl_sc26198setreg(portp, SCCR, portp->crenable); - BRDDISABLE(portp->brdnr); - portp->tx.tail = portp->tx.head; - spin_unlock_irqrestore(&brd_lock, flags); -} - -/*****************************************************************************/ - -/* - * Return the current state of data flow on this port. This is only - * really interesting when determining if data has fully completed - * transmission or not... The sc26198 interrupt scheme cannot - * determine when all data has actually drained, so we need to - * check the port statusy register to be sure. - */ - -static int stl_sc26198datastate(struct stlport *portp) -{ - unsigned long flags; - unsigned char sr; - - pr_debug("stl_sc26198datastate(portp=%p)\n", portp); - - if (portp == NULL) - return 0; - if (test_bit(ASYI_TXBUSY, &portp->istate)) - return 1; - - spin_lock_irqsave(&brd_lock, flags); - BRDENABLE(portp->brdnr, portp->pagenr); - sr = stl_sc26198getreg(portp, SR); - BRDDISABLE(portp->brdnr); - spin_unlock_irqrestore(&brd_lock, flags); - - return (sr & SR_TXEMPTY) ? 0 : 1; -} - -/*****************************************************************************/ - -/* - * Delay for a small amount of time, to give the sc26198 a chance - * to process a command... - */ - -static void stl_sc26198wait(struct stlport *portp) -{ - int i; - - pr_debug("stl_sc26198wait(portp=%p)\n", portp); - - if (portp == NULL) - return; - - for (i = 0; i < 20; i++) - stl_sc26198getglobreg(portp, TSTR); -} - -/*****************************************************************************/ - -/* - * If we are TX flow controlled and in IXANY mode then we may - * need to unflow control here. We gotta do this because of the - * automatic flow control modes of the sc26198. - */ - -static void stl_sc26198txunflow(struct stlport *portp, struct tty_struct *tty) -{ - unsigned char mr0; - - mr0 = stl_sc26198getreg(portp, MR0); - stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); - stl_sc26198setreg(portp, SCCR, CR_HOSTXON); - stl_sc26198wait(portp); - stl_sc26198setreg(portp, MR0, mr0); - clear_bit(ASYI_TXFLOWED, &portp->istate); -} - -/*****************************************************************************/ - -/* - * Interrupt service routine for sc26198 panels. - */ - -static void stl_sc26198intr(struct stlpanel *panelp, unsigned int iobase) -{ - struct stlport *portp; - unsigned int iack; - - spin_lock(&brd_lock); - -/* - * Work around bug in sc26198 chip... Cannot have A6 address - * line of UART high, else iack will be returned as 0. - */ - outb(0, (iobase + 1)); - - iack = inb(iobase + XP_IACK); - portp = panelp->ports[(iack & IVR_CHANMASK) + ((iobase & 0x4) << 1)]; - - if (iack & IVR_RXDATA) - stl_sc26198rxisr(portp, iack); - else if (iack & IVR_TXDATA) - stl_sc26198txisr(portp); - else - stl_sc26198otherisr(portp, iack); - - spin_unlock(&brd_lock); -} - -/*****************************************************************************/ - -/* - * Transmit interrupt handler. This has gotta be fast! Handling TX - * chars is pretty simple, stuff as many as possible from the TX buffer - * into the sc26198 FIFO. - * In practice it is possible that interrupts are enabled but that the - * port has been hung up. Need to handle not having any TX buffer here, - * this is done by using the side effect that head and tail will also - * be NULL if the buffer has been freed. - */ - -static void stl_sc26198txisr(struct stlport *portp) -{ - struct tty_struct *tty; - unsigned int ioaddr; - unsigned char mr0; - int len, stlen; - char *head, *tail; - - pr_debug("stl_sc26198txisr(portp=%p)\n", portp); - - ioaddr = portp->ioaddr; - head = portp->tx.head; - tail = portp->tx.tail; - len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); - if ((len == 0) || ((len < STL_TXBUFLOW) && - (test_bit(ASYI_TXLOW, &portp->istate) == 0))) { - set_bit(ASYI_TXLOW, &portp->istate); - tty = tty_port_tty_get(&portp->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } - } - - if (len == 0) { - outb((MR0 | portp->uartaddr), (ioaddr + XP_ADDR)); - mr0 = inb(ioaddr + XP_DATA); - if ((mr0 & MR0_TXMASK) == MR0_TXEMPTY) { - portp->imr &= ~IR_TXRDY; - outb((IMR | portp->uartaddr), (ioaddr + XP_ADDR)); - outb(portp->imr, (ioaddr + XP_DATA)); - clear_bit(ASYI_TXBUSY, &portp->istate); - } else { - mr0 |= ((mr0 & ~MR0_TXMASK) | MR0_TXEMPTY); - outb(mr0, (ioaddr + XP_DATA)); - } - } else { - len = min(len, SC26198_TXFIFOSIZE); - portp->stats.txtotal += len; - stlen = min_t(unsigned int, len, - (portp->tx.buf + STL_TXBUFSIZE) - tail); - outb(GTXFIFO, (ioaddr + XP_ADDR)); - outsb((ioaddr + XP_DATA), tail, stlen); - len -= stlen; - tail += stlen; - if (tail >= (portp->tx.buf + STL_TXBUFSIZE)) - tail = portp->tx.buf; - if (len > 0) { - outsb((ioaddr + XP_DATA), tail, len); - tail += len; - } - portp->tx.tail = tail; - } -} - -/*****************************************************************************/ - -/* - * Receive character interrupt handler. Determine if we have good chars - * or bad chars and then process appropriately. Good chars are easy - * just shove the lot into the RX buffer and set all status byte to 0. - * If a bad RX char then process as required. This routine needs to be - * fast! In practice it is possible that we get an interrupt on a port - * that is closed. This can happen on hangups - since they completely - * shutdown a port not in user context. Need to handle this case. - */ - -static void stl_sc26198rxisr(struct stlport *portp, unsigned int iack) -{ - struct tty_struct *tty; - unsigned int len, buflen, ioaddr; - - pr_debug("stl_sc26198rxisr(portp=%p,iack=%x)\n", portp, iack); - - tty = tty_port_tty_get(&portp->port); - ioaddr = portp->ioaddr; - outb(GIBCR, (ioaddr + XP_ADDR)); - len = inb(ioaddr + XP_DATA) + 1; - - if ((iack & IVR_TYPEMASK) == IVR_RXDATA) { - if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) { - len = min_t(unsigned int, len, sizeof(stl_unwanted)); - outb(GRXFIFO, (ioaddr + XP_ADDR)); - insb((ioaddr + XP_DATA), &stl_unwanted[0], len); - portp->stats.rxlost += len; - portp->stats.rxtotal += len; - } else { - len = min(len, buflen); - if (len > 0) { - unsigned char *ptr; - outb(GRXFIFO, (ioaddr + XP_ADDR)); - tty_prepare_flip_string(tty, &ptr, len); - insb((ioaddr + XP_DATA), ptr, len); - tty_schedule_flip(tty); - portp->stats.rxtotal += len; - } - } - } else { - stl_sc26198rxbadchars(portp); - } - -/* - * If we are TX flow controlled and in IXANY mode then we may need - * to unflow control here. We gotta do this because of the automatic - * flow control modes of the sc26198. - */ - if (test_bit(ASYI_TXFLOWED, &portp->istate)) { - if ((tty != NULL) && - (tty->termios != NULL) && - (tty->termios->c_iflag & IXANY)) { - stl_sc26198txunflow(portp, tty); - } - } - tty_kref_put(tty); -} - -/*****************************************************************************/ - -/* - * Process an RX bad character. - */ - -static void stl_sc26198rxbadch(struct stlport *portp, unsigned char status, char ch) -{ - struct tty_struct *tty; - unsigned int ioaddr; - - tty = tty_port_tty_get(&portp->port); - ioaddr = portp->ioaddr; - - if (status & SR_RXPARITY) - portp->stats.rxparity++; - if (status & SR_RXFRAMING) - portp->stats.rxframing++; - if (status & SR_RXOVERRUN) - portp->stats.rxoverrun++; - if (status & SR_RXBREAK) - portp->stats.rxbreaks++; - - if ((tty != NULL) && - ((portp->rxignoremsk & status) == 0)) { - if (portp->rxmarkmsk & status) { - if (status & SR_RXBREAK) { - status = TTY_BREAK; - if (portp->port.flags & ASYNC_SAK) { - do_SAK(tty); - BRDENABLE(portp->brdnr, portp->pagenr); - } - } else if (status & SR_RXPARITY) - status = TTY_PARITY; - else if (status & SR_RXFRAMING) - status = TTY_FRAME; - else if(status & SR_RXOVERRUN) - status = TTY_OVERRUN; - else - status = 0; - } else - status = 0; - - tty_insert_flip_char(tty, ch, status); - tty_schedule_flip(tty); - - if (status == 0) - portp->stats.rxtotal++; - } - tty_kref_put(tty); -} - -/*****************************************************************************/ - -/* - * Process all characters in the RX FIFO of the UART. Check all char - * status bytes as well, and process as required. We need to check - * all bytes in the FIFO, in case some more enter the FIFO while we - * are here. To get the exact character error type we need to switch - * into CHAR error mode (that is why we need to make sure we empty - * the FIFO). - */ - -static void stl_sc26198rxbadchars(struct stlport *portp) -{ - unsigned char status, mr1; - char ch; - -/* - * To get the precise error type for each character we must switch - * back into CHAR error mode. - */ - mr1 = stl_sc26198getreg(portp, MR1); - stl_sc26198setreg(portp, MR1, (mr1 & ~MR1_ERRBLOCK)); - - while ((status = stl_sc26198getreg(portp, SR)) & SR_RXRDY) { - stl_sc26198setreg(portp, SCCR, CR_CLEARRXERR); - ch = stl_sc26198getreg(portp, RXFIFO); - stl_sc26198rxbadch(portp, status, ch); - } - -/* - * To get correct interrupt class we must switch back into BLOCK - * error mode. - */ - stl_sc26198setreg(portp, MR1, mr1); -} - -/*****************************************************************************/ - -/* - * Other interrupt handler. This includes modem signals, flow - * control actions, etc. Most stuff is left to off-level interrupt - * processing time. - */ - -static void stl_sc26198otherisr(struct stlport *portp, unsigned int iack) -{ - unsigned char cir, ipr, xisr; - - pr_debug("stl_sc26198otherisr(portp=%p,iack=%x)\n", portp, iack); - - cir = stl_sc26198getglobreg(portp, CIR); - - switch (cir & CIR_SUBTYPEMASK) { - case CIR_SUBCOS: - ipr = stl_sc26198getreg(portp, IPR); - if (ipr & IPR_DCDCHANGE) { - stl_cd_change(portp); - portp->stats.modem++; - } - break; - case CIR_SUBXONXOFF: - xisr = stl_sc26198getreg(portp, XISR); - if (xisr & XISR_RXXONGOT) { - set_bit(ASYI_TXFLOWED, &portp->istate); - portp->stats.txxoff++; - } - if (xisr & XISR_RXXOFFGOT) { - clear_bit(ASYI_TXFLOWED, &portp->istate); - portp->stats.txxon++; - } - break; - case CIR_SUBBREAK: - stl_sc26198setreg(portp, SCCR, CR_BREAKRESET); - stl_sc26198rxbadchars(portp); - break; - default: - break; - } -} - -static void stl_free_isabrds(void) -{ - struct stlbrd *brdp; - unsigned int i; - - for (i = 0; i < stl_nrbrds; i++) { - if ((brdp = stl_brds[i]) == NULL || (brdp->state & STL_PROBED)) - continue; - - free_irq(brdp->irq, brdp); - - stl_cleanup_panels(brdp); - - release_region(brdp->ioaddr1, brdp->iosize1); - if (brdp->iosize2 > 0) - release_region(brdp->ioaddr2, brdp->iosize2); - - kfree(brdp); - stl_brds[i] = NULL; - } -} - -/* - * Loadable module initialization stuff. - */ -static int __init stallion_module_init(void) -{ - struct stlbrd *brdp; - struct stlconf conf; - unsigned int i, j; - int retval; - - printk(KERN_INFO "%s: version %s\n", stl_drvtitle, stl_drvversion); - - spin_lock_init(&stallion_lock); - spin_lock_init(&brd_lock); - - stl_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); - if (!stl_serial) { - retval = -ENOMEM; - goto err; - } - - stl_serial->owner = THIS_MODULE; - stl_serial->driver_name = stl_drvname; - stl_serial->name = "ttyE"; - stl_serial->major = STL_SERIALMAJOR; - stl_serial->minor_start = 0; - stl_serial->type = TTY_DRIVER_TYPE_SERIAL; - stl_serial->subtype = SERIAL_TYPE_NORMAL; - stl_serial->init_termios = stl_deftermios; - stl_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(stl_serial, &stl_ops); - - retval = tty_register_driver(stl_serial); - if (retval) { - printk("STALLION: failed to register serial driver\n"); - goto err_frtty; - } - -/* - * Find any dynamically supported boards. That is via module load - * line options. - */ - for (i = stl_nrbrds; i < stl_nargs; i++) { - memset(&conf, 0, sizeof(conf)); - if (stl_parsebrd(&conf, stl_brdsp[i]) == 0) - continue; - if ((brdp = stl_allocbrd()) == NULL) - continue; - brdp->brdnr = i; - brdp->brdtype = conf.brdtype; - brdp->ioaddr1 = conf.ioaddr1; - brdp->ioaddr2 = conf.ioaddr2; - brdp->irq = conf.irq; - brdp->irqtype = conf.irqtype; - stl_brds[brdp->brdnr] = brdp; - if (stl_brdinit(brdp)) { - stl_brds[brdp->brdnr] = NULL; - kfree(brdp); - } else { - for (j = 0; j < brdp->nrports; j++) - tty_register_device(stl_serial, - brdp->brdnr * STL_MAXPORTS + j, NULL); - stl_nrbrds = i + 1; - } - } - - /* this has to be _after_ isa finding because of locking */ - retval = pci_register_driver(&stl_pcidriver); - if (retval && stl_nrbrds == 0) { - printk(KERN_ERR "STALLION: can't register pci driver\n"); - goto err_unrtty; - } - -/* - * Set up a character driver for per board stuff. This is mainly used - * to do stats ioctls on the ports. - */ - if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stl_fsiomem)) - printk("STALLION: failed to register serial board device\n"); - - stallion_class = class_create(THIS_MODULE, "staliomem"); - if (IS_ERR(stallion_class)) - printk("STALLION: failed to create class\n"); - for (i = 0; i < 4; i++) - device_create(stallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), - NULL, "staliomem%d", i); - - return 0; -err_unrtty: - tty_unregister_driver(stl_serial); -err_frtty: - put_tty_driver(stl_serial); -err: - return retval; -} - -static void __exit stallion_module_exit(void) -{ - struct stlbrd *brdp; - unsigned int i, j; - - pr_debug("cleanup_module()\n"); - - printk(KERN_INFO "Unloading %s: version %s\n", stl_drvtitle, - stl_drvversion); - -/* - * Free up all allocated resources used by the ports. This includes - * memory and interrupts. As part of this process we will also do - * a hangup on every open port - to try to flush out any processes - * hanging onto ports. - */ - for (i = 0; i < stl_nrbrds; i++) { - if ((brdp = stl_brds[i]) == NULL || (brdp->state & STL_PROBED)) - continue; - for (j = 0; j < brdp->nrports; j++) - tty_unregister_device(stl_serial, - brdp->brdnr * STL_MAXPORTS + j); - } - - for (i = 0; i < 4; i++) - device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i)); - unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); - class_destroy(stallion_class); - - pci_unregister_driver(&stl_pcidriver); - - stl_free_isabrds(); - - tty_unregister_driver(stl_serial); - put_tty_driver(stl_serial); -} - -module_init(stallion_module_init); -module_exit(stallion_module_exit); - -MODULE_AUTHOR("Greg Ungerer"); -MODULE_DESCRIPTION("Stallion Multiport Serial Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 5c8fcfc42c3e..fb1fc4e5a8cb 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -41,6 +41,8 @@ config STAGING_EXCLUDE_BUILD if !STAGING_EXCLUDE_BUILD +source "drivers/staging/tty/Kconfig" + source "drivers/staging/et131x/Kconfig" source "drivers/staging/slicoss/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index d53886317826..f498e345a01d 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -3,6 +3,7 @@ # fix for build system bug... obj-$(CONFIG_STAGING) += staging.o +obj-y += tty/ obj-$(CONFIG_ET131X) += et131x/ obj-$(CONFIG_SLICOSS) += slicoss/ obj-$(CONFIG_VIDEO_GO7007) += go7007/ diff --git a/drivers/staging/tty/Kconfig b/drivers/staging/tty/Kconfig new file mode 100644 index 000000000000..77103a07abbd --- /dev/null +++ b/drivers/staging/tty/Kconfig @@ -0,0 +1,87 @@ +config STALLION + tristate "Stallion EasyIO or EC8/32 support" + depends on STALDRV && (ISA || EISA || PCI) + help + If you have an EasyIO or EasyConnection 8/32 multiport Stallion + card, then this is for you; say Y. Make sure to read + . + + To compile this driver as a module, choose M here: the + module will be called stallion. + +config ISTALLION + tristate "Stallion EC8/64, ONboard, Brumby support" + depends on STALDRV && (ISA || EISA || PCI) + help + If you have an EasyConnection 8/64, ONboard, Brumby or Stallion + serial multiport card, say Y here. Make sure to read + . + + To compile this driver as a module, choose M here: the + module will be called istallion. + +config DIGIEPCA + tristate "Digiboard Intelligent Async Support" + depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) + ---help--- + This is a driver for Digi International's Xx, Xeve, and Xem series + of cards which provide multiple serial ports. You would need + something like this to connect more than two modems to your Linux + box, for instance in order to become a dial-in server. This driver + supports the original PC (ISA) boards as well as PCI, and EISA. If + you have a card like this, say Y here and read the file + . + + To compile this driver as a module, choose M here: the + module will be called epca. + +config RISCOM8 + tristate "SDL RISCom/8 card support" + depends on SERIAL_NONSTANDARD + help + This is a driver for the SDL Communications RISCom/8 multiport card, + which gives you many serial ports. You would need something like + this to connect more than two modems to your Linux box, for instance + in order to become a dial-in server. If you have a card like that, + say Y here and read the file . + + Also it's possible to say M here and compile this driver as kernel + loadable module; the module will be called riscom8. + +config SPECIALIX + tristate "Specialix IO8+ card support" + depends on SERIAL_NONSTANDARD + help + This is a driver for the Specialix IO8+ multiport card (both the + ISA and the PCI version) which gives you many serial ports. You + would need something like this to connect more than two modems to + your Linux box, for instance in order to become a dial-in server. + + If you have a card like that, say Y here and read the file + . Also it's possible to say + M here and compile this driver as kernel loadable module which will be + called specialix. + +config COMPUTONE + tristate "Computone IntelliPort Plus serial support" + depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI) + ---help--- + This driver supports the entire family of Intelliport II/Plus + controllers with the exception of the MicroChannel controllers and + products previous to the Intelliport II. These are multiport cards, + which give you many serial ports. You would need something like this + to connect more than two modems to your Linux box, for instance in + order to become a dial-in server. If you have a card like that, say + Y here and read . + + To compile this driver as module, choose M here: the + module will be called ip2. + +config SERIAL167 + bool "CD2401 support for MVME166/7 serial ports" + depends on MVME16x + help + This is the driver for the serial ports on the Motorola MVME166, + 167, and 172 boards. Everyone using one of these boards should say + Y here. + diff --git a/drivers/staging/tty/Makefile b/drivers/staging/tty/Makefile new file mode 100644 index 000000000000..ac57c105611b --- /dev/null +++ b/drivers/staging/tty/Makefile @@ -0,0 +1,7 @@ +obj-$(CONFIG_STALLION) += stallion.o +obj-$(CONFIG_ISTALLION) += istallion.o +obj-$(CONFIG_DIGIEPCA) += epca.o +obj-$(CONFIG_SERIAL167) += serial167.o +obj-$(CONFIG_SPECIALIX) += specialix.o +obj-$(CONFIG_RISCOM8) += riscom8.o +obj-$(CONFIG_COMPUTONE) += ip2/ diff --git a/drivers/staging/tty/TODO b/drivers/staging/tty/TODO new file mode 100644 index 000000000000..88756453ac6c --- /dev/null +++ b/drivers/staging/tty/TODO @@ -0,0 +1,6 @@ +These are a few tty/serial drivers that either do not build, +or work if they do build, or if they seem to work, are for obsolete +hardware, or are full of unfixable races and no one uses them anymore. + +If no one steps up to adopt any of these drivers, they will be removed +in the 2.6.41 release. diff --git a/drivers/staging/tty/epca.c b/drivers/staging/tty/epca.c new file mode 100644 index 000000000000..7ad3638967ae --- /dev/null +++ b/drivers/staging/tty/epca.c @@ -0,0 +1,2784 @@ +/* + Copyright (C) 1996 Digi International. + + For technical support please email digiLinux@dgii.com or + call Digi tech support at (612) 912-3456 + + ** This driver is no longer supported by Digi ** + + Much of this design and code came from epca.c which was + copyright (C) 1994, 1995 Troy De Jongh, and subsquently + modified by David Nugent, Christoph Lameter, Mike McLagan. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ +/* See README.epca for change history --DAT*/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "digiPCI.h" + + +#include "digi1.h" +#include "digiFep1.h" +#include "epca.h" +#include "epcaconfig.h" + +#define VERSION "1.3.0.1-LK2.6" + +/* This major needs to be submitted to Linux to join the majors list */ +#define DIGIINFOMAJOR 35 /* For Digi specific ioctl */ + + +#define MAXCARDS 7 +#define epcaassert(x, msg) if (!(x)) epca_error(__LINE__, msg) + +#define PFX "epca: " + +static int nbdevs, num_cards, liloconfig; +static int digi_poller_inhibited = 1 ; + +static int setup_error_code; +static int invalid_lilo_config; + +/* + * The ISA boards do window flipping into the same spaces so its only sane with + * a single lock. It's still pretty efficient. This lock guards the hardware + * and the tty_port lock guards the kernel side stuff like use counts. Take + * this lock inside the port lock if you must take both. + */ +static DEFINE_SPINLOCK(epca_lock); + +/* MAXBOARDS is typically 12, but ISA and EISA cards are restricted + to 7 below. */ +static struct board_info boards[MAXBOARDS]; + +static struct tty_driver *pc_driver; +static struct tty_driver *pc_info; + +/* ------------------ Begin Digi specific structures -------------------- */ + +/* + * digi_channels represents an array of structures that keep track of each + * channel of the Digi product. Information such as transmit and receive + * pointers, termio data, and signal definitions (DTR, CTS, etc ...) are stored + * here. This structure is NOT used to overlay the cards physical channel + * structure. + */ +static struct channel digi_channels[MAX_ALLOC]; + +/* + * card_ptr is an array used to hold the address of the first channel structure + * of each card. This array will hold the addresses of various channels located + * in digi_channels. + */ +static struct channel *card_ptr[MAXCARDS]; + +static struct timer_list epca_timer; + +/* + * Begin generic memory functions. These functions will be alias (point at) + * more specific functions dependent on the board being configured. + */ +static void memwinon(struct board_info *b, unsigned int win); +static void memwinoff(struct board_info *b, unsigned int win); +static void globalwinon(struct channel *ch); +static void rxwinon(struct channel *ch); +static void txwinon(struct channel *ch); +static void memoff(struct channel *ch); +static void assertgwinon(struct channel *ch); +static void assertmemoff(struct channel *ch); + +/* ---- Begin more 'specific' memory functions for cx_like products --- */ + +static void pcxem_memwinon(struct board_info *b, unsigned int win); +static void pcxem_memwinoff(struct board_info *b, unsigned int win); +static void pcxem_globalwinon(struct channel *ch); +static void pcxem_rxwinon(struct channel *ch); +static void pcxem_txwinon(struct channel *ch); +static void pcxem_memoff(struct channel *ch); + +/* ------ Begin more 'specific' memory functions for the pcxe ------- */ + +static void pcxe_memwinon(struct board_info *b, unsigned int win); +static void pcxe_memwinoff(struct board_info *b, unsigned int win); +static void pcxe_globalwinon(struct channel *ch); +static void pcxe_rxwinon(struct channel *ch); +static void pcxe_txwinon(struct channel *ch); +static void pcxe_memoff(struct channel *ch); + +/* ---- Begin more 'specific' memory functions for the pc64xe and pcxi ---- */ +/* Note : pc64xe and pcxi share the same windowing routines */ + +static void pcxi_memwinon(struct board_info *b, unsigned int win); +static void pcxi_memwinoff(struct board_info *b, unsigned int win); +static void pcxi_globalwinon(struct channel *ch); +static void pcxi_rxwinon(struct channel *ch); +static void pcxi_txwinon(struct channel *ch); +static void pcxi_memoff(struct channel *ch); + +/* - Begin 'specific' do nothing memory functions needed for some cards - */ + +static void dummy_memwinon(struct board_info *b, unsigned int win); +static void dummy_memwinoff(struct board_info *b, unsigned int win); +static void dummy_globalwinon(struct channel *ch); +static void dummy_rxwinon(struct channel *ch); +static void dummy_txwinon(struct channel *ch); +static void dummy_memoff(struct channel *ch); +static void dummy_assertgwinon(struct channel *ch); +static void dummy_assertmemoff(struct channel *ch); + +static struct channel *verifyChannel(struct tty_struct *); +static void pc_sched_event(struct channel *, int); +static void epca_error(int, char *); +static void pc_close(struct tty_struct *, struct file *); +static void shutdown(struct channel *, struct tty_struct *tty); +static void pc_hangup(struct tty_struct *); +static int pc_write_room(struct tty_struct *); +static int pc_chars_in_buffer(struct tty_struct *); +static void pc_flush_buffer(struct tty_struct *); +static void pc_flush_chars(struct tty_struct *); +static int pc_open(struct tty_struct *, struct file *); +static void post_fep_init(unsigned int crd); +static void epcapoll(unsigned long); +static void doevent(int); +static void fepcmd(struct channel *, int, int, int, int, int); +static unsigned termios2digi_h(struct channel *ch, unsigned); +static unsigned termios2digi_i(struct channel *ch, unsigned); +static unsigned termios2digi_c(struct channel *ch, unsigned); +static void epcaparam(struct tty_struct *, struct channel *); +static void receive_data(struct channel *, struct tty_struct *tty); +static int pc_ioctl(struct tty_struct *, + unsigned int, unsigned long); +static int info_ioctl(struct tty_struct *, + unsigned int, unsigned long); +static void pc_set_termios(struct tty_struct *, struct ktermios *); +static void do_softint(struct work_struct *work); +static void pc_stop(struct tty_struct *); +static void pc_start(struct tty_struct *); +static void pc_throttle(struct tty_struct *tty); +static void pc_unthrottle(struct tty_struct *tty); +static int pc_send_break(struct tty_struct *tty, int msec); +static void setup_empty_event(struct tty_struct *tty, struct channel *ch); + +static int pc_write(struct tty_struct *, const unsigned char *, int); +static int pc_init(void); +static int init_PCI(void); + +/* + * Table of functions for each board to handle memory. Mantaining parallelism + * is a *very* good idea here. The idea is for the runtime code to blindly call + * these functions, not knowing/caring about the underlying hardware. This + * stuff should contain no conditionals; if more functionality is needed a + * different entry should be established. These calls are the interface calls + * and are the only functions that should be accessed. Anyone caught making + * direct calls deserves what they get. + */ +static void memwinon(struct board_info *b, unsigned int win) +{ + b->memwinon(b, win); +} + +static void memwinoff(struct board_info *b, unsigned int win) +{ + b->memwinoff(b, win); +} + +static void globalwinon(struct channel *ch) +{ + ch->board->globalwinon(ch); +} + +static void rxwinon(struct channel *ch) +{ + ch->board->rxwinon(ch); +} + +static void txwinon(struct channel *ch) +{ + ch->board->txwinon(ch); +} + +static void memoff(struct channel *ch) +{ + ch->board->memoff(ch); +} +static void assertgwinon(struct channel *ch) +{ + ch->board->assertgwinon(ch); +} + +static void assertmemoff(struct channel *ch) +{ + ch->board->assertmemoff(ch); +} + +/* PCXEM windowing is the same as that used in the PCXR and CX series cards. */ +static void pcxem_memwinon(struct board_info *b, unsigned int win) +{ + outb_p(FEPWIN | win, b->port + 1); +} + +static void pcxem_memwinoff(struct board_info *b, unsigned int win) +{ + outb_p(0, b->port + 1); +} + +static void pcxem_globalwinon(struct channel *ch) +{ + outb_p(FEPWIN, (int)ch->board->port + 1); +} + +static void pcxem_rxwinon(struct channel *ch) +{ + outb_p(ch->rxwin, (int)ch->board->port + 1); +} + +static void pcxem_txwinon(struct channel *ch) +{ + outb_p(ch->txwin, (int)ch->board->port + 1); +} + +static void pcxem_memoff(struct channel *ch) +{ + outb_p(0, (int)ch->board->port + 1); +} + +/* ----------------- Begin pcxe memory window stuff ------------------ */ +static void pcxe_memwinon(struct board_info *b, unsigned int win) +{ + outb_p(FEPWIN | win, b->port + 1); +} + +static void pcxe_memwinoff(struct board_info *b, unsigned int win) +{ + outb_p(inb(b->port) & ~FEPMEM, b->port + 1); + outb_p(0, b->port + 1); +} + +static void pcxe_globalwinon(struct channel *ch) +{ + outb_p(FEPWIN, (int)ch->board->port + 1); +} + +static void pcxe_rxwinon(struct channel *ch) +{ + outb_p(ch->rxwin, (int)ch->board->port + 1); +} + +static void pcxe_txwinon(struct channel *ch) +{ + outb_p(ch->txwin, (int)ch->board->port + 1); +} + +static void pcxe_memoff(struct channel *ch) +{ + outb_p(0, (int)ch->board->port); + outb_p(0, (int)ch->board->port + 1); +} + +/* ------------- Begin pc64xe and pcxi memory window stuff -------------- */ +static void pcxi_memwinon(struct board_info *b, unsigned int win) +{ + outb_p(inb(b->port) | FEPMEM, b->port); +} + +static void pcxi_memwinoff(struct board_info *b, unsigned int win) +{ + outb_p(inb(b->port) & ~FEPMEM, b->port); +} + +static void pcxi_globalwinon(struct channel *ch) +{ + outb_p(FEPMEM, ch->board->port); +} + +static void pcxi_rxwinon(struct channel *ch) +{ + outb_p(FEPMEM, ch->board->port); +} + +static void pcxi_txwinon(struct channel *ch) +{ + outb_p(FEPMEM, ch->board->port); +} + +static void pcxi_memoff(struct channel *ch) +{ + outb_p(0, ch->board->port); +} + +static void pcxi_assertgwinon(struct channel *ch) +{ + epcaassert(inb(ch->board->port) & FEPMEM, "Global memory off"); +} + +static void pcxi_assertmemoff(struct channel *ch) +{ + epcaassert(!(inb(ch->board->port) & FEPMEM), "Memory on"); +} + +/* + * Not all of the cards need specific memory windowing routines. Some cards + * (Such as PCI) needs no windowing routines at all. We provide these do + * nothing routines so that the same code base can be used. The driver will + * ALWAYS call a windowing routine if it thinks it needs to; regardless of the + * card. However, dependent on the card the routine may or may not do anything. + */ +static void dummy_memwinon(struct board_info *b, unsigned int win) +{ +} + +static void dummy_memwinoff(struct board_info *b, unsigned int win) +{ +} + +static void dummy_globalwinon(struct channel *ch) +{ +} + +static void dummy_rxwinon(struct channel *ch) +{ +} + +static void dummy_txwinon(struct channel *ch) +{ +} + +static void dummy_memoff(struct channel *ch) +{ +} + +static void dummy_assertgwinon(struct channel *ch) +{ +} + +static void dummy_assertmemoff(struct channel *ch) +{ +} + +static struct channel *verifyChannel(struct tty_struct *tty) +{ + /* + * This routine basically provides a sanity check. It insures that the + * channel returned is within the proper range of addresses as well as + * properly initialized. If some bogus info gets passed in + * through tty->driver_data this should catch it. + */ + if (tty) { + struct channel *ch = tty->driver_data; + if (ch >= &digi_channels[0] && ch < &digi_channels[nbdevs]) { + if (ch->magic == EPCA_MAGIC) + return ch; + } + } + return NULL; +} + +static void pc_sched_event(struct channel *ch, int event) +{ + /* + * We call this to schedule interrupt processing on some event. The + * kernel sees our request and calls the related routine in OUR driver. + */ + ch->event |= 1 << event; + schedule_work(&ch->tqueue); +} + +static void epca_error(int line, char *msg) +{ + printk(KERN_ERR "epca_error (Digi): line = %d %s\n", line, msg); +} + +static void pc_close(struct tty_struct *tty, struct file *filp) +{ + struct channel *ch; + struct tty_port *port; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch == NULL) + return; + port = &ch->port; + + if (tty_port_close_start(port, tty, filp) == 0) + return; + + pc_flush_buffer(tty); + shutdown(ch, tty); + + tty_port_close_end(port, tty); + ch->event = 0; /* FIXME: review ch->event locking */ + tty_port_tty_set(port, NULL); +} + +static void shutdown(struct channel *ch, struct tty_struct *tty) +{ + unsigned long flags; + struct board_chan __iomem *bc; + struct tty_port *port = &ch->port; + + if (!(port->flags & ASYNC_INITIALIZED)) + return; + + spin_lock_irqsave(&epca_lock, flags); + + globalwinon(ch); + bc = ch->brdchan; + + /* + * In order for an event to be generated on the receipt of data the + * idata flag must be set. Since we are shutting down, this is not + * necessary clear this flag. + */ + if (bc) + writeb(0, &bc->idata); + + /* If we're a modem control device and HUPCL is on, drop RTS & DTR. */ + if (tty->termios->c_cflag & HUPCL) { + ch->omodem &= ~(ch->m_rts | ch->m_dtr); + fepcmd(ch, SETMODEM, 0, ch->m_dtr | ch->m_rts, 10, 1); + } + memoff(ch); + + /* + * The channel has officialy been closed. The next time it is opened it + * will have to reinitialized. Set a flag to indicate this. + */ + /* Prevent future Digi programmed interrupts from coming active */ + port->flags &= ~ASYNC_INITIALIZED; + spin_unlock_irqrestore(&epca_lock, flags); +} + +static void pc_hangup(struct tty_struct *tty) +{ + struct channel *ch; + + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch != NULL) { + pc_flush_buffer(tty); + tty_ldisc_flush(tty); + shutdown(ch, tty); + + ch->event = 0; /* FIXME: review locking of ch->event */ + tty_port_hangup(&ch->port); + } +} + +static int pc_write(struct tty_struct *tty, + const unsigned char *buf, int bytesAvailable) +{ + unsigned int head, tail; + int dataLen; + int size; + int amountCopied; + struct channel *ch; + unsigned long flags; + int remain; + struct board_chan __iomem *bc; + + /* + * pc_write is primarily called directly by the kernel routine + * tty_write (Though it can also be called by put_char) found in + * tty_io.c. pc_write is passed a line discipline buffer where the data + * to be written out is stored. The line discipline implementation + * itself is done at the kernel level and is not brought into the + * driver. + */ + + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch == NULL) + return 0; + + /* Make a pointer to the channel data structure found on the board. */ + bc = ch->brdchan; + size = ch->txbufsize; + amountCopied = 0; + + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + + head = readw(&bc->tin) & (size - 1); + tail = readw(&bc->tout); + + if (tail != readw(&bc->tout)) + tail = readw(&bc->tout); + tail &= (size - 1); + + if (head >= tail) { + /* head has not wrapped */ + /* + * remain (much like dataLen above) represents the total amount + * of space available on the card for data. Here dataLen + * represents the space existing between the head pointer and + * the end of buffer. This is important because a memcpy cannot + * be told to automatically wrap around when it hits the buffer + * end. + */ + dataLen = size - head; + remain = size - (head - tail) - 1; + } else { + /* head has wrapped around */ + remain = tail - head - 1; + dataLen = remain; + } + /* + * Check the space on the card. If we have more data than space; reduce + * the amount of data to fit the space. + */ + bytesAvailable = min(remain, bytesAvailable); + txwinon(ch); + while (bytesAvailable > 0) { + /* there is data to copy onto card */ + + /* + * If head is not wrapped, the below will make sure the first + * data copy fills to the end of card buffer. + */ + dataLen = min(bytesAvailable, dataLen); + memcpy_toio(ch->txptr + head, buf, dataLen); + buf += dataLen; + head += dataLen; + amountCopied += dataLen; + bytesAvailable -= dataLen; + + if (head >= size) { + head = 0; + dataLen = tail; + } + } + ch->statusflags |= TXBUSY; + globalwinon(ch); + writew(head, &bc->tin); + + if ((ch->statusflags & LOWWAIT) == 0) { + ch->statusflags |= LOWWAIT; + writeb(1, &bc->ilow); + } + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + return amountCopied; +} + +static int pc_write_room(struct tty_struct *tty) +{ + int remain = 0; + struct channel *ch; + unsigned long flags; + unsigned int head, tail; + struct board_chan __iomem *bc; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch != NULL) { + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + + bc = ch->brdchan; + head = readw(&bc->tin) & (ch->txbufsize - 1); + tail = readw(&bc->tout); + + if (tail != readw(&bc->tout)) + tail = readw(&bc->tout); + /* Wrap tail if necessary */ + tail &= (ch->txbufsize - 1); + remain = tail - head - 1; + if (remain < 0) + remain += ch->txbufsize; + + if (remain && (ch->statusflags & LOWWAIT) == 0) { + ch->statusflags |= LOWWAIT; + writeb(1, &bc->ilow); + } + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + } + /* Return how much room is left on card */ + return remain; +} + +static int pc_chars_in_buffer(struct tty_struct *tty) +{ + int chars; + unsigned int ctail, head, tail; + int remain; + unsigned long flags; + struct channel *ch; + struct board_chan __iomem *bc; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch == NULL) + return 0; + + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + + bc = ch->brdchan; + tail = readw(&bc->tout); + head = readw(&bc->tin); + ctail = readw(&ch->mailbox->cout); + + if (tail == head && readw(&ch->mailbox->cin) == ctail && + readb(&bc->tbusy) == 0) + chars = 0; + else { /* Begin if some space on the card has been used */ + head = readw(&bc->tin) & (ch->txbufsize - 1); + tail &= (ch->txbufsize - 1); + /* + * The logic here is basically opposite of the above + * pc_write_room here we are finding the amount of bytes in the + * buffer filled. Not the amount of bytes empty. + */ + remain = tail - head - 1; + if (remain < 0) + remain += ch->txbufsize; + chars = (int)(ch->txbufsize - remain); + /* + * Make it possible to wakeup anything waiting for output in + * tty_ioctl.c, etc. + * + * If not already set. Setup an event to indicate when the + * transmit buffer empties. + */ + if (!(ch->statusflags & EMPTYWAIT)) + setup_empty_event(tty, ch); + } /* End if some space on the card has been used */ + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + /* Return number of characters residing on card. */ + return chars; +} + +static void pc_flush_buffer(struct tty_struct *tty) +{ + unsigned int tail; + unsigned long flags; + struct channel *ch; + struct board_chan __iomem *bc; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch == NULL) + return; + + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + bc = ch->brdchan; + tail = readw(&bc->tout); + /* Have FEP move tout pointer; effectively flushing transmit buffer */ + fepcmd(ch, STOUT, (unsigned) tail, 0, 0, 0); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + tty_wakeup(tty); +} + +static void pc_flush_chars(struct tty_struct *tty) +{ + struct channel *ch; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch != NULL) { + unsigned long flags; + spin_lock_irqsave(&epca_lock, flags); + /* + * If not already set and the transmitter is busy setup an + * event to indicate when the transmit empties. + */ + if ((ch->statusflags & TXBUSY) && + !(ch->statusflags & EMPTYWAIT)) + setup_empty_event(tty, ch); + spin_unlock_irqrestore(&epca_lock, flags); + } +} + +static int epca_carrier_raised(struct tty_port *port) +{ + struct channel *ch = container_of(port, struct channel, port); + if (ch->imodem & ch->dcd) + return 1; + return 0; +} + +static void epca_dtr_rts(struct tty_port *port, int onoff) +{ +} + +static int pc_open(struct tty_struct *tty, struct file *filp) +{ + struct channel *ch; + struct tty_port *port; + unsigned long flags; + int line, retval, boardnum; + struct board_chan __iomem *bc; + unsigned int head; + + line = tty->index; + if (line < 0 || line >= nbdevs) + return -ENODEV; + + ch = &digi_channels[line]; + port = &ch->port; + boardnum = ch->boardnum; + + /* Check status of board configured in system. */ + + /* + * I check to see if the epca_setup routine detected a user error. It + * might be better to put this in pc_init, but for the moment it goes + * here. + */ + if (invalid_lilo_config) { + if (setup_error_code & INVALID_BOARD_TYPE) + printk(KERN_ERR "epca: pc_open: Invalid board type specified in kernel options.\n"); + if (setup_error_code & INVALID_NUM_PORTS) + printk(KERN_ERR "epca: pc_open: Invalid number of ports specified in kernel options.\n"); + if (setup_error_code & INVALID_MEM_BASE) + printk(KERN_ERR "epca: pc_open: Invalid board memory address specified in kernel options.\n"); + if (setup_error_code & INVALID_PORT_BASE) + printk(KERN_ERR "epca; pc_open: Invalid board port address specified in kernel options.\n"); + if (setup_error_code & INVALID_BOARD_STATUS) + printk(KERN_ERR "epca: pc_open: Invalid board status specified in kernel options.\n"); + if (setup_error_code & INVALID_ALTPIN) + printk(KERN_ERR "epca: pc_open: Invalid board altpin specified in kernel options;\n"); + tty->driver_data = NULL; /* Mark this device as 'down' */ + return -ENODEV; + } + if (boardnum >= num_cards || boards[boardnum].status == DISABLED) { + tty->driver_data = NULL; /* Mark this device as 'down' */ + return(-ENODEV); + } + + bc = ch->brdchan; + if (bc == NULL) { + tty->driver_data = NULL; + return -ENODEV; + } + + spin_lock_irqsave(&port->lock, flags); + /* + * Every time a channel is opened, increment a counter. This is + * necessary because we do not wish to flush and shutdown the channel + * until the last app holding the channel open, closes it. + */ + port->count++; + /* + * Set a kernel structures pointer to our local channel structure. This + * way we can get to it when passed only a tty struct. + */ + tty->driver_data = ch; + port->tty = tty; + /* + * If this is the first time the channel has been opened, initialize + * the tty->termios struct otherwise let pc_close handle it. + */ + spin_lock(&epca_lock); + globalwinon(ch); + ch->statusflags = 0; + + /* Save boards current modem status */ + ch->imodem = readb(&bc->mstat); + + /* + * Set receive head and tail ptrs to each other. This indicates no data + * available to read. + */ + head = readw(&bc->rin); + writew(head, &bc->rout); + + /* Set the channels associated tty structure */ + + /* + * The below routine generally sets up parity, baud, flow control + * issues, etc.... It effect both control flags and input flags. + */ + epcaparam(tty, ch); + memoff(ch); + spin_unlock(&epca_lock); + port->flags |= ASYNC_INITIALIZED; + spin_unlock_irqrestore(&port->lock, flags); + + retval = tty_port_block_til_ready(port, tty, filp); + if (retval) + return retval; + /* + * Set this again in case a hangup set it to zero while this open() was + * waiting for the line... + */ + spin_lock_irqsave(&port->lock, flags); + port->tty = tty; + spin_lock(&epca_lock); + globalwinon(ch); + /* Enable Digi Data events */ + writeb(1, &bc->idata); + memoff(ch); + spin_unlock(&epca_lock); + spin_unlock_irqrestore(&port->lock, flags); + return 0; +} + +static int __init epca_module_init(void) +{ + return pc_init(); +} +module_init(epca_module_init); + +static struct pci_driver epca_driver; + +static void __exit epca_module_exit(void) +{ + int count, crd; + struct board_info *bd; + struct channel *ch; + + del_timer_sync(&epca_timer); + + if (tty_unregister_driver(pc_driver) || + tty_unregister_driver(pc_info)) { + printk(KERN_WARNING "epca: cleanup_module failed to un-register tty driver\n"); + return; + } + put_tty_driver(pc_driver); + put_tty_driver(pc_info); + + for (crd = 0; crd < num_cards; crd++) { + bd = &boards[crd]; + if (!bd) { /* sanity check */ + printk(KERN_ERR " - Digi : cleanup_module failed\n"); + return; + } + ch = card_ptr[crd]; + for (count = 0; count < bd->numports; count++, ch++) { + struct tty_struct *tty = tty_port_tty_get(&ch->port); + if (tty) { + tty_hangup(tty); + tty_kref_put(tty); + } + } + } + pci_unregister_driver(&epca_driver); +} +module_exit(epca_module_exit); + +static const struct tty_operations pc_ops = { + .open = pc_open, + .close = pc_close, + .write = pc_write, + .write_room = pc_write_room, + .flush_buffer = pc_flush_buffer, + .chars_in_buffer = pc_chars_in_buffer, + .flush_chars = pc_flush_chars, + .ioctl = pc_ioctl, + .set_termios = pc_set_termios, + .stop = pc_stop, + .start = pc_start, + .throttle = pc_throttle, + .unthrottle = pc_unthrottle, + .hangup = pc_hangup, + .break_ctl = pc_send_break +}; + +static const struct tty_port_operations epca_port_ops = { + .carrier_raised = epca_carrier_raised, + .dtr_rts = epca_dtr_rts, +}; + +static int info_open(struct tty_struct *tty, struct file *filp) +{ + return 0; +} + +static const struct tty_operations info_ops = { + .open = info_open, + .ioctl = info_ioctl, +}; + +static int __init pc_init(void) +{ + int crd; + struct board_info *bd; + unsigned char board_id = 0; + int err = -ENOMEM; + + int pci_boards_found, pci_count; + + pci_count = 0; + + pc_driver = alloc_tty_driver(MAX_ALLOC); + if (!pc_driver) + goto out1; + + pc_info = alloc_tty_driver(MAX_ALLOC); + if (!pc_info) + goto out2; + + /* + * If epca_setup has not been ran by LILO set num_cards to defaults; + * copy board structure defined by digiConfig into drivers board + * structure. Note : If LILO has ran epca_setup then epca_setup will + * handle defining num_cards as well as copying the data into the board + * structure. + */ + if (!liloconfig) { + /* driver has been configured via. epcaconfig */ + nbdevs = NBDEVS; + num_cards = NUMCARDS; + memcpy(&boards, &static_boards, + sizeof(struct board_info) * NUMCARDS); + } + + /* + * Note : If lilo was used to configure the driver and the ignore + * epcaconfig option was choosen (digiepca=2) then nbdevs and num_cards + * will equal 0 at this point. This is okay; PCI cards will still be + * picked up if detected. + */ + + /* + * Set up interrupt, we will worry about memory allocation in + * post_fep_init. + */ + printk(KERN_INFO "DIGI epca driver version %s loaded.\n", VERSION); + + /* + * NOTE : This code assumes that the number of ports found in the + * boards array is correct. This could be wrong if the card in question + * is PCI (And therefore has no ports entry in the boards structure.) + * The rest of the information will be valid for PCI because the + * beginning of pc_init scans for PCI and determines i/o and base + * memory addresses. I am not sure if it is possible to read the number + * of ports supported by the card prior to it being booted (Since that + * is the state it is in when pc_init is run). Because it is not + * possible to query the number of supported ports until after the card + * has booted; we are required to calculate the card_ptrs as the card + * is initialized (Inside post_fep_init). The negative thing about this + * approach is that digiDload's call to GET_INFO will have a bad port + * value. (Since this is called prior to post_fep_init.) + */ + pci_boards_found = 0; + if (num_cards < MAXBOARDS) + pci_boards_found += init_PCI(); + num_cards += pci_boards_found; + + pc_driver->owner = THIS_MODULE; + pc_driver->name = "ttyD"; + pc_driver->major = DIGI_MAJOR; + pc_driver->minor_start = 0; + pc_driver->type = TTY_DRIVER_TYPE_SERIAL; + pc_driver->subtype = SERIAL_TYPE_NORMAL; + pc_driver->init_termios = tty_std_termios; + pc_driver->init_termios.c_iflag = 0; + pc_driver->init_termios.c_oflag = 0; + pc_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; + pc_driver->init_termios.c_lflag = 0; + pc_driver->init_termios.c_ispeed = 9600; + pc_driver->init_termios.c_ospeed = 9600; + pc_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; + tty_set_operations(pc_driver, &pc_ops); + + pc_info->owner = THIS_MODULE; + pc_info->name = "digi_ctl"; + pc_info->major = DIGIINFOMAJOR; + pc_info->minor_start = 0; + pc_info->type = TTY_DRIVER_TYPE_SERIAL; + pc_info->subtype = SERIAL_TYPE_INFO; + pc_info->init_termios = tty_std_termios; + pc_info->init_termios.c_iflag = 0; + pc_info->init_termios.c_oflag = 0; + pc_info->init_termios.c_lflag = 0; + pc_info->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL; + pc_info->init_termios.c_ispeed = 9600; + pc_info->init_termios.c_ospeed = 9600; + pc_info->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(pc_info, &info_ops); + + + for (crd = 0; crd < num_cards; crd++) { + /* + * This is where the appropriate memory handlers for the + * hardware is set. Everything at runtime blindly jumps through + * these vectors. + */ + + /* defined in epcaconfig.h */ + bd = &boards[crd]; + + switch (bd->type) { + case PCXEM: + case EISAXEM: + bd->memwinon = pcxem_memwinon; + bd->memwinoff = pcxem_memwinoff; + bd->globalwinon = pcxem_globalwinon; + bd->txwinon = pcxem_txwinon; + bd->rxwinon = pcxem_rxwinon; + bd->memoff = pcxem_memoff; + bd->assertgwinon = dummy_assertgwinon; + bd->assertmemoff = dummy_assertmemoff; + break; + + case PCIXEM: + case PCIXRJ: + case PCIXR: + bd->memwinon = dummy_memwinon; + bd->memwinoff = dummy_memwinoff; + bd->globalwinon = dummy_globalwinon; + bd->txwinon = dummy_txwinon; + bd->rxwinon = dummy_rxwinon; + bd->memoff = dummy_memoff; + bd->assertgwinon = dummy_assertgwinon; + bd->assertmemoff = dummy_assertmemoff; + break; + + case PCXE: + case PCXEVE: + bd->memwinon = pcxe_memwinon; + bd->memwinoff = pcxe_memwinoff; + bd->globalwinon = pcxe_globalwinon; + bd->txwinon = pcxe_txwinon; + bd->rxwinon = pcxe_rxwinon; + bd->memoff = pcxe_memoff; + bd->assertgwinon = dummy_assertgwinon; + bd->assertmemoff = dummy_assertmemoff; + break; + + case PCXI: + case PC64XE: + bd->memwinon = pcxi_memwinon; + bd->memwinoff = pcxi_memwinoff; + bd->globalwinon = pcxi_globalwinon; + bd->txwinon = pcxi_txwinon; + bd->rxwinon = pcxi_rxwinon; + bd->memoff = pcxi_memoff; + bd->assertgwinon = pcxi_assertgwinon; + bd->assertmemoff = pcxi_assertmemoff; + break; + + default: + break; + } + + /* + * Some cards need a memory segment to be defined for use in + * transmit and receive windowing operations. These boards are + * listed in the below switch. In the case of the XI the amount + * of memory on the board is variable so the memory_seg is also + * variable. This code determines what they segment should be. + */ + switch (bd->type) { + case PCXE: + case PCXEVE: + case PC64XE: + bd->memory_seg = 0xf000; + break; + + case PCXI: + board_id = inb((int)bd->port); + if ((board_id & 0x1) == 0x1) { + /* it's an XI card */ + /* Is it a 64K board */ + if ((board_id & 0x30) == 0) + bd->memory_seg = 0xf000; + + /* Is it a 128K board */ + if ((board_id & 0x30) == 0x10) + bd->memory_seg = 0xe000; + + /* Is is a 256K board */ + if ((board_id & 0x30) == 0x20) + bd->memory_seg = 0xc000; + + /* Is it a 512K board */ + if ((board_id & 0x30) == 0x30) + bd->memory_seg = 0x8000; + } else + printk(KERN_ERR "epca: Board at 0x%x doesn't appear to be an XI\n", (int)bd->port); + break; + } + } + + err = tty_register_driver(pc_driver); + if (err) { + printk(KERN_ERR "Couldn't register Digi PC/ driver"); + goto out3; + } + + err = tty_register_driver(pc_info); + if (err) { + printk(KERN_ERR "Couldn't register Digi PC/ info "); + goto out4; + } + + /* Start up the poller to check for events on all enabled boards */ + init_timer(&epca_timer); + epca_timer.function = epcapoll; + mod_timer(&epca_timer, jiffies + HZ/25); + return 0; + +out4: + tty_unregister_driver(pc_driver); +out3: + put_tty_driver(pc_info); +out2: + put_tty_driver(pc_driver); +out1: + return err; +} + +static void post_fep_init(unsigned int crd) +{ + int i; + void __iomem *memaddr; + struct global_data __iomem *gd; + struct board_info *bd; + struct board_chan __iomem *bc; + struct channel *ch; + int shrinkmem = 0, lowwater; + + /* + * This call is made by the user via. the ioctl call DIGI_INIT. It is + * responsible for setting up all the card specific stuff. + */ + bd = &boards[crd]; + + /* + * If this is a PCI board, get the port info. Remember PCI cards do not + * have entries into the epcaconfig.h file, so we can't get the number + * of ports from it. Unfortunetly, this means that anyone doing a + * DIGI_GETINFO before the board has booted will get an invalid number + * of ports returned (It should return 0). Calls to DIGI_GETINFO after + * DIGI_INIT has been called will return the proper values. + */ + if (bd->type >= PCIXEM) { /* Begin get PCI number of ports */ + /* + * Below we use XEMPORTS as a memory offset regardless of which + * PCI card it is. This is because all of the supported PCI + * cards have the same memory offset for the channel data. This + * will have to be changed if we ever develop a PCI/XE card. + * NOTE : The FEP manual states that the port offset is 0xC22 + * as opposed to 0xC02. This is only true for PC/XE, and PC/XI + * cards; not for the XEM, or CX series. On the PCI cards the + * number of ports is determined by reading a ID PROM located + * in the box attached to the card. The card can then determine + * the index the id to determine the number of ports available. + * (FYI - The id should be located at 0x1ac (And may use up to + * 4 bytes if the box in question is a XEM or CX)). + */ + /* PCI cards are already remapped at this point ISA are not */ + bd->numports = readw(bd->re_map_membase + XEMPORTS); + epcaassert(bd->numports <= 64, "PCI returned a invalid number of ports"); + nbdevs += (bd->numports); + } else { + /* Fix up the mappings for ISA/EISA etc */ + /* FIXME: 64K - can we be smarter ? */ + bd->re_map_membase = ioremap_nocache(bd->membase, 0x10000); + } + + if (crd != 0) + card_ptr[crd] = card_ptr[crd-1] + boards[crd-1].numports; + else + card_ptr[crd] = &digi_channels[crd]; /* <- For card 0 only */ + + ch = card_ptr[crd]; + epcaassert(ch <= &digi_channels[nbdevs - 1], "ch out of range"); + + memaddr = bd->re_map_membase; + + /* + * The below assignment will set bc to point at the BEGINING of the + * cards channel structures. For 1 card there will be between 8 and 64 + * of these structures. + */ + bc = memaddr + CHANSTRUCT; + + /* + * The below assignment will set gd to point at the BEGINING of global + * memory address 0xc00. The first data in that global memory actually + * starts at address 0xc1a. The command in pointer begins at 0xd10. + */ + gd = memaddr + GLOBAL; + + /* + * XEPORTS (address 0xc22) points at the number of channels the card + * supports. (For 64XE, XI, XEM, and XR use 0xc02) + */ + if ((bd->type == PCXEVE || bd->type == PCXE) && + (readw(memaddr + XEPORTS) < 3)) + shrinkmem = 1; + if (bd->type < PCIXEM) + if (!request_region((int)bd->port, 4, board_desc[bd->type])) + return; + memwinon(bd, 0); + + /* + * Remember ch is the main drivers channels structure, while bc is the + * cards channel structure. + */ + for (i = 0; i < bd->numports; i++, ch++, bc++) { + unsigned long flags; + u16 tseg, rseg; + + tty_port_init(&ch->port); + ch->port.ops = &epca_port_ops; + ch->brdchan = bc; + ch->mailbox = gd; + INIT_WORK(&ch->tqueue, do_softint); + ch->board = &boards[crd]; + + spin_lock_irqsave(&epca_lock, flags); + switch (bd->type) { + /* + * Since some of the boards use different bitmaps for + * their control signals we cannot hard code these + * values and retain portability. We virtualize this + * data here. + */ + case EISAXEM: + case PCXEM: + case PCIXEM: + case PCIXRJ: + case PCIXR: + ch->m_rts = 0x02; + ch->m_dcd = 0x80; + ch->m_dsr = 0x20; + ch->m_cts = 0x10; + ch->m_ri = 0x40; + ch->m_dtr = 0x01; + break; + + case PCXE: + case PCXEVE: + case PCXI: + case PC64XE: + ch->m_rts = 0x02; + ch->m_dcd = 0x08; + ch->m_dsr = 0x10; + ch->m_cts = 0x20; + ch->m_ri = 0x40; + ch->m_dtr = 0x80; + break; + } + + if (boards[crd].altpin) { + ch->dsr = ch->m_dcd; + ch->dcd = ch->m_dsr; + ch->digiext.digi_flags |= DIGI_ALTPIN; + } else { + ch->dcd = ch->m_dcd; + ch->dsr = ch->m_dsr; + } + + ch->boardnum = crd; + ch->channelnum = i; + ch->magic = EPCA_MAGIC; + tty_port_tty_set(&ch->port, NULL); + + if (shrinkmem) { + fepcmd(ch, SETBUFFER, 32, 0, 0, 0); + shrinkmem = 0; + } + + tseg = readw(&bc->tseg); + rseg = readw(&bc->rseg); + + switch (bd->type) { + case PCIXEM: + case PCIXRJ: + case PCIXR: + /* Cover all the 2MEG cards */ + ch->txptr = memaddr + ((tseg << 4) & 0x1fffff); + ch->rxptr = memaddr + ((rseg << 4) & 0x1fffff); + ch->txwin = FEPWIN | (tseg >> 11); + ch->rxwin = FEPWIN | (rseg >> 11); + break; + + case PCXEM: + case EISAXEM: + /* Cover all the 32K windowed cards */ + /* Mask equal to window size - 1 */ + ch->txptr = memaddr + ((tseg << 4) & 0x7fff); + ch->rxptr = memaddr + ((rseg << 4) & 0x7fff); + ch->txwin = FEPWIN | (tseg >> 11); + ch->rxwin = FEPWIN | (rseg >> 11); + break; + + case PCXEVE: + case PCXE: + ch->txptr = memaddr + (((tseg - bd->memory_seg) << 4) + & 0x1fff); + ch->txwin = FEPWIN | ((tseg - bd->memory_seg) >> 9); + ch->rxptr = memaddr + (((rseg - bd->memory_seg) << 4) + & 0x1fff); + ch->rxwin = FEPWIN | ((rseg - bd->memory_seg) >> 9); + break; + + case PCXI: + case PC64XE: + ch->txptr = memaddr + ((tseg - bd->memory_seg) << 4); + ch->rxptr = memaddr + ((rseg - bd->memory_seg) << 4); + ch->txwin = ch->rxwin = 0; + break; + } + + ch->txbufhead = 0; + ch->txbufsize = readw(&bc->tmax) + 1; + + ch->rxbufhead = 0; + ch->rxbufsize = readw(&bc->rmax) + 1; + + lowwater = ch->txbufsize >= 2000 ? 1024 : (ch->txbufsize / 2); + + /* Set transmitter low water mark */ + fepcmd(ch, STXLWATER, lowwater, 0, 10, 0); + + /* Set receiver low water mark */ + fepcmd(ch, SRXLWATER, (ch->rxbufsize / 4), 0, 10, 0); + + /* Set receiver high water mark */ + fepcmd(ch, SRXHWATER, (3 * ch->rxbufsize / 4), 0, 10, 0); + + writew(100, &bc->edelay); + writeb(1, &bc->idata); + + ch->startc = readb(&bc->startc); + ch->stopc = readb(&bc->stopc); + ch->startca = readb(&bc->startca); + ch->stopca = readb(&bc->stopca); + + ch->fepcflag = 0; + ch->fepiflag = 0; + ch->fepoflag = 0; + ch->fepstartc = 0; + ch->fepstopc = 0; + ch->fepstartca = 0; + ch->fepstopca = 0; + + ch->port.close_delay = 50; + + spin_unlock_irqrestore(&epca_lock, flags); + } + + printk(KERN_INFO + "Digi PC/Xx Driver V%s: %s I/O = 0x%lx Mem = 0x%lx Ports = %d\n", + VERSION, board_desc[bd->type], (long)bd->port, + (long)bd->membase, bd->numports); + memwinoff(bd, 0); +} + +static void epcapoll(unsigned long ignored) +{ + unsigned long flags; + int crd; + unsigned int head, tail; + struct channel *ch; + struct board_info *bd; + + /* + * This routine is called upon every timer interrupt. Even though the + * Digi series cards are capable of generating interrupts this method + * of non-looping polling is more efficient. This routine checks for + * card generated events (Such as receive data, are transmit buffer + * empty) and acts on those events. + */ + for (crd = 0; crd < num_cards; crd++) { + bd = &boards[crd]; + ch = card_ptr[crd]; + + if ((bd->status == DISABLED) || digi_poller_inhibited) + continue; + + /* + * assertmemoff is not needed here; indeed it is an empty + * subroutine. It is being kept because future boards may need + * this as well as some legacy boards. + */ + spin_lock_irqsave(&epca_lock, flags); + + assertmemoff(ch); + + globalwinon(ch); + + /* + * In this case head and tail actually refer to the event queue + * not the transmit or receive queue. + */ + head = readw(&ch->mailbox->ein); + tail = readw(&ch->mailbox->eout); + + /* If head isn't equal to tail we have an event */ + if (head != tail) + doevent(crd); + memoff(ch); + + spin_unlock_irqrestore(&epca_lock, flags); + } /* End for each card */ + mod_timer(&epca_timer, jiffies + (HZ / 25)); +} + +static void doevent(int crd) +{ + void __iomem *eventbuf; + struct channel *ch, *chan0; + static struct tty_struct *tty; + struct board_info *bd; + struct board_chan __iomem *bc; + unsigned int tail, head; + int event, channel; + int mstat, lstat; + + /* + * This subroutine is called by epcapoll when an event is detected + * in the event queue. This routine responds to those events. + */ + bd = &boards[crd]; + + chan0 = card_ptr[crd]; + epcaassert(chan0 <= &digi_channels[nbdevs - 1], "ch out of range"); + assertgwinon(chan0); + while ((tail = readw(&chan0->mailbox->eout)) != + (head = readw(&chan0->mailbox->ein))) { + /* Begin while something in event queue */ + assertgwinon(chan0); + eventbuf = bd->re_map_membase + tail + ISTART; + /* Get the channel the event occurred on */ + channel = readb(eventbuf); + /* Get the actual event code that occurred */ + event = readb(eventbuf + 1); + /* + * The two assignments below get the current modem status + * (mstat) and the previous modem status (lstat). These are + * useful becuase an event could signal a change in modem + * signals itself. + */ + mstat = readb(eventbuf + 2); + lstat = readb(eventbuf + 3); + + ch = chan0 + channel; + if ((unsigned)channel >= bd->numports || !ch) { + if (channel >= bd->numports) + ch = chan0; + bc = ch->brdchan; + goto next; + } + + bc = ch->brdchan; + if (bc == NULL) + goto next; + + tty = tty_port_tty_get(&ch->port); + if (event & DATA_IND) { /* Begin DATA_IND */ + receive_data(ch, tty); + assertgwinon(ch); + } /* End DATA_IND */ + /* else *//* Fix for DCD transition missed bug */ + if (event & MODEMCHG_IND) { + /* A modem signal change has been indicated */ + ch->imodem = mstat; + if (test_bit(ASYNCB_CHECK_CD, &ch->port.flags)) { + /* We are now receiving dcd */ + if (mstat & ch->dcd) + wake_up_interruptible(&ch->port.open_wait); + else /* No dcd; hangup */ + pc_sched_event(ch, EPCA_EVENT_HANGUP); + } + } + if (tty) { + if (event & BREAK_IND) { + /* A break has been indicated */ + tty_insert_flip_char(tty, 0, TTY_BREAK); + tty_schedule_flip(tty); + } else if (event & LOWTX_IND) { + if (ch->statusflags & LOWWAIT) { + ch->statusflags &= ~LOWWAIT; + tty_wakeup(tty); + } + } else if (event & EMPTYTX_IND) { + /* This event is generated by + setup_empty_event */ + ch->statusflags &= ~TXBUSY; + if (ch->statusflags & EMPTYWAIT) { + ch->statusflags &= ~EMPTYWAIT; + tty_wakeup(tty); + } + } + tty_kref_put(tty); + } +next: + globalwinon(ch); + BUG_ON(!bc); + writew(1, &bc->idata); + writew((tail + 4) & (IMAX - ISTART - 4), &chan0->mailbox->eout); + globalwinon(chan0); + } /* End while something in event queue */ +} + +static void fepcmd(struct channel *ch, int cmd, int word_or_byte, + int byte2, int ncmds, int bytecmd) +{ + unchar __iomem *memaddr; + unsigned int head, cmdTail, cmdStart, cmdMax; + long count; + int n; + + /* This is the routine in which commands may be passed to the card. */ + + if (ch->board->status == DISABLED) + return; + assertgwinon(ch); + /* Remember head (As well as max) is just an offset not a base addr */ + head = readw(&ch->mailbox->cin); + /* cmdStart is a base address */ + cmdStart = readw(&ch->mailbox->cstart); + /* + * We do the addition below because we do not want a max pointer + * relative to cmdStart. We want a max pointer that points at the + * physical end of the command queue. + */ + cmdMax = (cmdStart + 4 + readw(&ch->mailbox->cmax)); + memaddr = ch->board->re_map_membase; + + if (head >= (cmdMax - cmdStart) || (head & 03)) { + printk(KERN_ERR "line %d: Out of range, cmd = %x, head = %x\n", + __LINE__, cmd, head); + printk(KERN_ERR "line %d: Out of range, cmdMax = %x, cmdStart = %x\n", + __LINE__, cmdMax, cmdStart); + return; + } + if (bytecmd) { + writeb(cmd, memaddr + head + cmdStart + 0); + writeb(ch->channelnum, memaddr + head + cmdStart + 1); + /* Below word_or_byte is bits to set */ + writeb(word_or_byte, memaddr + head + cmdStart + 2); + /* Below byte2 is bits to reset */ + writeb(byte2, memaddr + head + cmdStart + 3); + } else { + writeb(cmd, memaddr + head + cmdStart + 0); + writeb(ch->channelnum, memaddr + head + cmdStart + 1); + writeb(word_or_byte, memaddr + head + cmdStart + 2); + } + head = (head + 4) & (cmdMax - cmdStart - 4); + writew(head, &ch->mailbox->cin); + count = FEPTIMEOUT; + + for (;;) { + count--; + if (count == 0) { + printk(KERN_ERR " - Fep not responding in fepcmd()\n"); + return; + } + head = readw(&ch->mailbox->cin); + cmdTail = readw(&ch->mailbox->cout); + n = (head - cmdTail) & (cmdMax - cmdStart - 4); + /* + * Basically this will break when the FEP acknowledges the + * command by incrementing cmdTail (Making it equal to head). + */ + if (n <= ncmds * (sizeof(short) * 4)) + break; + } +} + +/* + * Digi products use fields in their channels structures that are very similar + * to the c_cflag and c_iflag fields typically found in UNIX termios + * structures. The below three routines allow mappings between these hardware + * "flags" and their respective Linux flags. + */ +static unsigned termios2digi_h(struct channel *ch, unsigned cflag) +{ + unsigned res = 0; + + if (cflag & CRTSCTS) { + ch->digiext.digi_flags |= (RTSPACE | CTSPACE); + res |= ((ch->m_cts) | (ch->m_rts)); + } + + if (ch->digiext.digi_flags & RTSPACE) + res |= ch->m_rts; + + if (ch->digiext.digi_flags & DTRPACE) + res |= ch->m_dtr; + + if (ch->digiext.digi_flags & CTSPACE) + res |= ch->m_cts; + + if (ch->digiext.digi_flags & DSRPACE) + res |= ch->dsr; + + if (ch->digiext.digi_flags & DCDPACE) + res |= ch->dcd; + + if (res & (ch->m_rts)) + ch->digiext.digi_flags |= RTSPACE; + + if (res & (ch->m_cts)) + ch->digiext.digi_flags |= CTSPACE; + + return res; +} + +static unsigned termios2digi_i(struct channel *ch, unsigned iflag) +{ + unsigned res = iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | + INPCK | ISTRIP | IXON | IXANY | IXOFF); + if (ch->digiext.digi_flags & DIGI_AIXON) + res |= IAIXON; + return res; +} + +static unsigned termios2digi_c(struct channel *ch, unsigned cflag) +{ + unsigned res = 0; + if (cflag & CBAUDEX) { + ch->digiext.digi_flags |= DIGI_FAST; + /* + * HUPCL bit is used by FEP to indicate fast baud table is to + * be used. + */ + res |= FEP_HUPCL; + } else + ch->digiext.digi_flags &= ~DIGI_FAST; + /* + * CBAUD has bit position 0x1000 set these days to indicate Linux + * baud rate remap. Digi hardware can't handle the bit assignment. + * (We use a different bit assignment for high speed.). Clear this + * bit out. + */ + res |= cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB | CSTOPB | CSIZE); + /* + * This gets a little confusing. The Digi cards have their own + * representation of c_cflags controlling baud rate. For the most part + * this is identical to the Linux implementation. However; Digi + * supports one rate (76800) that Linux doesn't. This means that the + * c_cflag entry that would normally mean 76800 for Digi actually means + * 115200 under Linux. Without the below mapping, a stty 115200 would + * only drive the board at 76800. Since the rate 230400 is also found + * after 76800, the same problem afflicts us when we choose a rate of + * 230400. Without the below modificiation stty 230400 would actually + * give us 115200. + * + * There are two additional differences. The Linux value for CLOCAL + * (0x800; 0004000) has no meaning to the Digi hardware. Also in later + * releases of Linux; the CBAUD define has CBAUDEX (0x1000; 0010000) + * ored into it (CBAUD = 0x100f as opposed to 0xf). CBAUDEX should be + * checked for a screened out prior to termios2digi_c returning. Since + * CLOCAL isn't used by the board this can be ignored as long as the + * returned value is used only by Digi hardware. + */ + if (cflag & CBAUDEX) { + /* + * The below code is trying to guarantee that only baud rates + * 115200 and 230400 are remapped. We use exclusive or because + * the various baud rates share common bit positions and + * therefore can't be tested for easily. + */ + if ((!((cflag & 0x7) ^ (B115200 & ~CBAUDEX))) || + (!((cflag & 0x7) ^ (B230400 & ~CBAUDEX)))) + res += 1; + } + return res; +} + +/* Caller must hold the locks */ +static void epcaparam(struct tty_struct *tty, struct channel *ch) +{ + unsigned int cmdHead; + struct ktermios *ts; + struct board_chan __iomem *bc; + unsigned mval, hflow, cflag, iflag; + + bc = ch->brdchan; + epcaassert(bc != NULL, "bc out of range"); + + assertgwinon(ch); + ts = tty->termios; + if ((ts->c_cflag & CBAUD) == 0) { /* Begin CBAUD detected */ + cmdHead = readw(&bc->rin); + writew(cmdHead, &bc->rout); + cmdHead = readw(&bc->tin); + /* Changing baud in mid-stream transmission can be wonderful */ + /* + * Flush current transmit buffer by setting cmdTail pointer + * (tout) to cmdHead pointer (tin). Hopefully the transmit + * buffer is empty. + */ + fepcmd(ch, STOUT, (unsigned) cmdHead, 0, 0, 0); + mval = 0; + } else { /* Begin CBAUD not detected */ + /* + * c_cflags have changed but that change had nothing to do with + * BAUD. Propagate the change to the card. + */ + cflag = termios2digi_c(ch, ts->c_cflag); + if (cflag != ch->fepcflag) { + ch->fepcflag = cflag; + /* Set baud rate, char size, stop bits, parity */ + fepcmd(ch, SETCTRLFLAGS, (unsigned) cflag, 0, 0, 0); + } + /* + * If the user has not forced CLOCAL and if the device is not a + * CALLOUT device (Which is always CLOCAL) we set flags such + * that the driver will wait on carrier detect. + */ + if (ts->c_cflag & CLOCAL) + clear_bit(ASYNCB_CHECK_CD, &ch->port.flags); + else + set_bit(ASYNCB_CHECK_CD, &ch->port.flags); + mval = ch->m_dtr | ch->m_rts; + } /* End CBAUD not detected */ + iflag = termios2digi_i(ch, ts->c_iflag); + /* Check input mode flags */ + if (iflag != ch->fepiflag) { + ch->fepiflag = iflag; + /* + * Command sets channels iflag structure on the board. Such + * things as input soft flow control, handling of parity + * errors, and break handling are all set here. + * + * break handling, parity handling, input stripping, + * flow control chars + */ + fepcmd(ch, SETIFLAGS, (unsigned int) ch->fepiflag, 0, 0, 0); + } + /* + * Set the board mint value for this channel. This will cause hardware + * events to be generated each time the DCD signal (Described in mint) + * changes. + */ + writeb(ch->dcd, &bc->mint); + if ((ts->c_cflag & CLOCAL) || (ch->digiext.digi_flags & DIGI_FORCEDCD)) + if (ch->digiext.digi_flags & DIGI_FORCEDCD) + writeb(0, &bc->mint); + ch->imodem = readb(&bc->mstat); + hflow = termios2digi_h(ch, ts->c_cflag); + if (hflow != ch->hflow) { + ch->hflow = hflow; + /* + * Hard flow control has been selected but the board is not + * using it. Activate hard flow control now. + */ + fepcmd(ch, SETHFLOW, hflow, 0xff, 0, 1); + } + mval ^= ch->modemfake & (mval ^ ch->modem); + + if (ch->omodem ^ mval) { + ch->omodem = mval; + /* + * The below command sets the DTR and RTS mstat structure. If + * hard flow control is NOT active these changes will drive the + * output of the actual DTR and RTS lines. If hard flow control + * is active, the changes will be saved in the mstat structure + * and only asserted when hard flow control is turned off. + */ + + /* First reset DTR & RTS; then set them */ + fepcmd(ch, SETMODEM, 0, ((ch->m_dtr)|(ch->m_rts)), 0, 1); + fepcmd(ch, SETMODEM, mval, 0, 0, 1); + } + if (ch->startc != ch->fepstartc || ch->stopc != ch->fepstopc) { + ch->fepstartc = ch->startc; + ch->fepstopc = ch->stopc; + /* + * The XON / XOFF characters have changed; propagate these + * changes to the card. + */ + fepcmd(ch, SONOFFC, ch->fepstartc, ch->fepstopc, 0, 1); + } + if (ch->startca != ch->fepstartca || ch->stopca != ch->fepstopca) { + ch->fepstartca = ch->startca; + ch->fepstopca = ch->stopca; + /* + * Similar to the above, this time the auxilarly XON / XOFF + * characters have changed; propagate these changes to the card. + */ + fepcmd(ch, SAUXONOFFC, ch->fepstartca, ch->fepstopca, 0, 1); + } +} + +/* Caller holds lock */ +static void receive_data(struct channel *ch, struct tty_struct *tty) +{ + unchar *rptr; + struct ktermios *ts = NULL; + struct board_chan __iomem *bc; + int dataToRead, wrapgap, bytesAvailable; + unsigned int tail, head; + unsigned int wrapmask; + + /* + * This routine is called by doint when a receive data event has taken + * place. + */ + globalwinon(ch); + if (ch->statusflags & RXSTOPPED) + return; + if (tty) + ts = tty->termios; + bc = ch->brdchan; + BUG_ON(!bc); + wrapmask = ch->rxbufsize - 1; + + /* + * Get the head and tail pointers to the receiver queue. Wrap the head + * pointer if it has reached the end of the buffer. + */ + head = readw(&bc->rin); + head &= wrapmask; + tail = readw(&bc->rout) & wrapmask; + + bytesAvailable = (head - tail) & wrapmask; + if (bytesAvailable == 0) + return; + + /* If CREAD bit is off or device not open, set TX tail to head */ + if (!tty || !ts || !(ts->c_cflag & CREAD)) { + writew(head, &bc->rout); + return; + } + + if (tty_buffer_request_room(tty, bytesAvailable + 1) == 0) + return; + + if (readb(&bc->orun)) { + writeb(0, &bc->orun); + printk(KERN_WARNING "epca; overrun! DigiBoard device %s\n", + tty->name); + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + } + rxwinon(ch); + while (bytesAvailable > 0) { + /* Begin while there is data on the card */ + wrapgap = (head >= tail) ? head - tail : ch->rxbufsize - tail; + /* + * Even if head has wrapped around only report the amount of + * data to be equal to the size - tail. Remember memcpy can't + * automaticly wrap around the receive buffer. + */ + dataToRead = (wrapgap < bytesAvailable) ? wrapgap + : bytesAvailable; + /* Make sure we don't overflow the buffer */ + dataToRead = tty_prepare_flip_string(tty, &rptr, dataToRead); + if (dataToRead == 0) + break; + /* + * Move data read from our card into the line disciplines + * buffer for translation if necessary. + */ + memcpy_fromio(rptr, ch->rxptr + tail, dataToRead); + tail = (tail + dataToRead) & wrapmask; + bytesAvailable -= dataToRead; + } /* End while there is data on the card */ + globalwinon(ch); + writew(tail, &bc->rout); + /* Must be called with global data */ + tty_schedule_flip(tty); +} + +static int info_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case DIGI_GETINFO: + { + struct digi_info di; + int brd; + + if (get_user(brd, (unsigned int __user *)arg)) + return -EFAULT; + if (brd < 0 || brd >= num_cards || num_cards == 0) + return -ENODEV; + + memset(&di, 0, sizeof(di)); + + di.board = brd; + di.status = boards[brd].status; + di.type = boards[brd].type ; + di.numports = boards[brd].numports ; + /* Legacy fixups - just move along nothing to see */ + di.port = (unsigned char *)boards[brd].port ; + di.membase = (unsigned char *)boards[brd].membase ; + + if (copy_to_user((void __user *)arg, &di, sizeof(di))) + return -EFAULT; + break; + + } + + case DIGI_POLLER: + { + int brd = arg & 0xff000000 >> 16; + unsigned char state = arg & 0xff; + + if (brd < 0 || brd >= num_cards) { + printk(KERN_ERR "epca: DIGI POLLER : brd not valid!\n"); + return -ENODEV; + } + digi_poller_inhibited = state; + break; + } + + case DIGI_INIT: + { + /* + * This call is made by the apps to complete the + * initialization of the board(s). This routine is + * responsible for setting the card to its initial + * state and setting the drivers control fields to the + * sutianle settings for the card in question. + */ + int crd; + for (crd = 0; crd < num_cards; crd++) + post_fep_init(crd); + break; + } + default: + return -ENOTTY; + } + return 0; +} + +static int pc_tiocmget(struct tty_struct *tty) +{ + struct channel *ch = tty->driver_data; + struct board_chan __iomem *bc; + unsigned int mstat, mflag = 0; + unsigned long flags; + + if (ch) + bc = ch->brdchan; + else + return -EINVAL; + + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + mstat = readb(&bc->mstat); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + + if (mstat & ch->m_dtr) + mflag |= TIOCM_DTR; + if (mstat & ch->m_rts) + mflag |= TIOCM_RTS; + if (mstat & ch->m_cts) + mflag |= TIOCM_CTS; + if (mstat & ch->dsr) + mflag |= TIOCM_DSR; + if (mstat & ch->m_ri) + mflag |= TIOCM_RI; + if (mstat & ch->dcd) + mflag |= TIOCM_CD; + return mflag; +} + +static int pc_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct channel *ch = tty->driver_data; + unsigned long flags; + + if (!ch) + return -EINVAL; + + spin_lock_irqsave(&epca_lock, flags); + /* + * I think this modemfake stuff is broken. It doesn't correctly reflect + * the behaviour desired by the TIOCM* ioctls. Therefore this is + * probably broken. + */ + if (set & TIOCM_RTS) { + ch->modemfake |= ch->m_rts; + ch->modem |= ch->m_rts; + } + if (set & TIOCM_DTR) { + ch->modemfake |= ch->m_dtr; + ch->modem |= ch->m_dtr; + } + if (clear & TIOCM_RTS) { + ch->modemfake |= ch->m_rts; + ch->modem &= ~ch->m_rts; + } + if (clear & TIOCM_DTR) { + ch->modemfake |= ch->m_dtr; + ch->modem &= ~ch->m_dtr; + } + globalwinon(ch); + /* + * The below routine generally sets up parity, baud, flow control + * issues, etc.... It effect both control flags and input flags. + */ + epcaparam(tty, ch); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + return 0; +} + +static int pc_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + digiflow_t dflow; + unsigned long flags; + unsigned int mflag, mstat; + unsigned char startc, stopc; + struct board_chan __iomem *bc; + struct channel *ch = tty->driver_data; + void __user *argp = (void __user *)arg; + + if (ch) + bc = ch->brdchan; + else + return -EINVAL; + switch (cmd) { + case TIOCMODG: + mflag = pc_tiocmget(tty); + if (put_user(mflag, (unsigned long __user *)argp)) + return -EFAULT; + break; + case TIOCMODS: + if (get_user(mstat, (unsigned __user *)argp)) + return -EFAULT; + return pc_tiocmset(tty, mstat, ~mstat); + case TIOCSDTR: + spin_lock_irqsave(&epca_lock, flags); + ch->omodem |= ch->m_dtr; + globalwinon(ch); + fepcmd(ch, SETMODEM, ch->m_dtr, 0, 10, 1); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + break; + + case TIOCCDTR: + spin_lock_irqsave(&epca_lock, flags); + ch->omodem &= ~ch->m_dtr; + globalwinon(ch); + fepcmd(ch, SETMODEM, 0, ch->m_dtr, 10, 1); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + break; + case DIGI_GETA: + if (copy_to_user(argp, &ch->digiext, sizeof(digi_t))) + return -EFAULT; + break; + case DIGI_SETAW: + case DIGI_SETAF: + if (cmd == DIGI_SETAW) { + /* Setup an event to indicate when the transmit + buffer empties */ + spin_lock_irqsave(&epca_lock, flags); + setup_empty_event(tty, ch); + spin_unlock_irqrestore(&epca_lock, flags); + tty_wait_until_sent(tty, 0); + } else { + /* ldisc lock already held in ioctl */ + if (tty->ldisc->ops->flush_buffer) + tty->ldisc->ops->flush_buffer(tty); + } + /* Fall Thru */ + case DIGI_SETA: + if (copy_from_user(&ch->digiext, argp, sizeof(digi_t))) + return -EFAULT; + + if (ch->digiext.digi_flags & DIGI_ALTPIN) { + ch->dcd = ch->m_dsr; + ch->dsr = ch->m_dcd; + } else { + ch->dcd = ch->m_dcd; + ch->dsr = ch->m_dsr; + } + + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + + /* + * The below routine generally sets up parity, baud, flow + * control issues, etc.... It effect both control flags and + * input flags. + */ + epcaparam(tty, ch); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + break; + + case DIGI_GETFLOW: + case DIGI_GETAFLOW: + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + if (cmd == DIGI_GETFLOW) { + dflow.startc = readb(&bc->startc); + dflow.stopc = readb(&bc->stopc); + } else { + dflow.startc = readb(&bc->startca); + dflow.stopc = readb(&bc->stopca); + } + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + + if (copy_to_user(argp, &dflow, sizeof(dflow))) + return -EFAULT; + break; + + case DIGI_SETAFLOW: + case DIGI_SETFLOW: + if (cmd == DIGI_SETFLOW) { + startc = ch->startc; + stopc = ch->stopc; + } else { + startc = ch->startca; + stopc = ch->stopca; + } + + if (copy_from_user(&dflow, argp, sizeof(dflow))) + return -EFAULT; + + if (dflow.startc != startc || dflow.stopc != stopc) { + /* Begin if setflow toggled */ + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + + if (cmd == DIGI_SETFLOW) { + ch->fepstartc = ch->startc = dflow.startc; + ch->fepstopc = ch->stopc = dflow.stopc; + fepcmd(ch, SONOFFC, ch->fepstartc, + ch->fepstopc, 0, 1); + } else { + ch->fepstartca = ch->startca = dflow.startc; + ch->fepstopca = ch->stopca = dflow.stopc; + fepcmd(ch, SAUXONOFFC, ch->fepstartca, + ch->fepstopca, 0, 1); + } + + if (ch->statusflags & TXSTOPPED) + pc_start(tty); + + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + } /* End if setflow toggled */ + break; + default: + return -ENOIOCTLCMD; + } + return 0; +} + +static void pc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + struct channel *ch; + unsigned long flags; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + + if (ch != NULL) { /* Begin if channel valid */ + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + epcaparam(tty, ch); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + + if ((old_termios->c_cflag & CRTSCTS) && + ((tty->termios->c_cflag & CRTSCTS) == 0)) + tty->hw_stopped = 0; + + if (!(old_termios->c_cflag & CLOCAL) && + (tty->termios->c_cflag & CLOCAL)) + wake_up_interruptible(&ch->port.open_wait); + + } /* End if channel valid */ +} + +static void do_softint(struct work_struct *work) +{ + struct channel *ch = container_of(work, struct channel, tqueue); + /* Called in response to a modem change event */ + if (ch && ch->magic == EPCA_MAGIC) { + struct tty_struct *tty = tty_port_tty_get(&ch->port); + + if (tty && tty->driver_data) { + if (test_and_clear_bit(EPCA_EVENT_HANGUP, &ch->event)) { + tty_hangup(tty); + wake_up_interruptible(&ch->port.open_wait); + clear_bit(ASYNCB_NORMAL_ACTIVE, + &ch->port.flags); + } + } + tty_kref_put(tty); + } +} + +/* + * pc_stop and pc_start provide software flow control to the routine and the + * pc_ioctl routine. + */ +static void pc_stop(struct tty_struct *tty) +{ + struct channel *ch; + unsigned long flags; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch != NULL) { + spin_lock_irqsave(&epca_lock, flags); + if ((ch->statusflags & TXSTOPPED) == 0) { + /* Begin if transmit stop requested */ + globalwinon(ch); + /* STOP transmitting now !! */ + fepcmd(ch, PAUSETX, 0, 0, 0, 0); + ch->statusflags |= TXSTOPPED; + memoff(ch); + } /* End if transmit stop requested */ + spin_unlock_irqrestore(&epca_lock, flags); + } +} + +static void pc_start(struct tty_struct *tty) +{ + struct channel *ch; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch != NULL) { + unsigned long flags; + spin_lock_irqsave(&epca_lock, flags); + /* Just in case output was resumed because of a change + in Digi-flow */ + if (ch->statusflags & TXSTOPPED) { + /* Begin transmit resume requested */ + struct board_chan __iomem *bc; + globalwinon(ch); + bc = ch->brdchan; + if (ch->statusflags & LOWWAIT) + writeb(1, &bc->ilow); + /* Okay, you can start transmitting again... */ + fepcmd(ch, RESUMETX, 0, 0, 0, 0); + ch->statusflags &= ~TXSTOPPED; + memoff(ch); + } /* End transmit resume requested */ + spin_unlock_irqrestore(&epca_lock, flags); + } +} + +/* + * The below routines pc_throttle and pc_unthrottle are used to slow (And + * resume) the receipt of data into the kernels receive buffers. The exact + * occurrence of this depends on the size of the kernels receive buffer and + * what the 'watermarks' are set to for that buffer. See the n_ttys.c file for + * more details. + */ +static void pc_throttle(struct tty_struct *tty) +{ + struct channel *ch; + unsigned long flags; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch != NULL) { + spin_lock_irqsave(&epca_lock, flags); + if ((ch->statusflags & RXSTOPPED) == 0) { + globalwinon(ch); + fepcmd(ch, PAUSERX, 0, 0, 0, 0); + ch->statusflags |= RXSTOPPED; + memoff(ch); + } + spin_unlock_irqrestore(&epca_lock, flags); + } +} + +static void pc_unthrottle(struct tty_struct *tty) +{ + struct channel *ch; + unsigned long flags; + /* + * verifyChannel returns the channel from the tty struct if it is + * valid. This serves as a sanity check. + */ + ch = verifyChannel(tty); + if (ch != NULL) { + /* Just in case output was resumed because of a change + in Digi-flow */ + spin_lock_irqsave(&epca_lock, flags); + if (ch->statusflags & RXSTOPPED) { + globalwinon(ch); + fepcmd(ch, RESUMERX, 0, 0, 0, 0); + ch->statusflags &= ~RXSTOPPED; + memoff(ch); + } + spin_unlock_irqrestore(&epca_lock, flags); + } +} + +static int pc_send_break(struct tty_struct *tty, int msec) +{ + struct channel *ch = tty->driver_data; + unsigned long flags; + + if (msec == -1) + msec = 0xFFFF; + else if (msec > 0xFFFE) + msec = 0xFFFE; + else if (msec < 1) + msec = 1; + + spin_lock_irqsave(&epca_lock, flags); + globalwinon(ch); + /* + * Maybe I should send an infinite break here, schedule() for msec + * amount of time, and then stop the break. This way, the user can't + * screw up the FEP by causing digi_send_break() to be called (i.e. via + * an ioctl()) more than once in msec amount of time. + * Try this for now... + */ + fepcmd(ch, SENDBREAK, msec, 0, 10, 0); + memoff(ch); + spin_unlock_irqrestore(&epca_lock, flags); + return 0; +} + +/* Caller MUST hold the lock */ +static void setup_empty_event(struct tty_struct *tty, struct channel *ch) +{ + struct board_chan __iomem *bc = ch->brdchan; + + globalwinon(ch); + ch->statusflags |= EMPTYWAIT; + /* + * When set the iempty flag request a event to be generated when the + * transmit buffer is empty (If there is no BREAK in progress). + */ + writeb(1, &bc->iempty); + memoff(ch); +} + +#ifndef MODULE +static void __init epca_setup(char *str, int *ints) +{ + struct board_info board; + int index, loop, last; + char *temp, *t2; + unsigned len; + + /* + * If this routine looks a little strange it is because it is only + * called if a LILO append command is given to boot the kernel with + * parameters. In this way, we can provide the user a method of + * changing his board configuration without rebuilding the kernel. + */ + if (!liloconfig) + liloconfig = 1; + + memset(&board, 0, sizeof(board)); + + /* Assume the data is int first, later we can change it */ + /* I think that array position 0 of ints holds the number of args */ + for (last = 0, index = 1; index <= ints[0]; index++) + switch (index) { /* Begin parse switch */ + case 1: + board.status = ints[index]; + /* + * We check for 2 (As opposed to 1; because 2 is a flag + * instructing the driver to ignore epcaconfig.) For + * this reason we check for 2. + */ + if (board.status == 2) { + /* Begin ignore epcaconfig as well as lilo cmd line */ + nbdevs = 0; + num_cards = 0; + return; + } /* End ignore epcaconfig as well as lilo cmd line */ + + if (board.status > 2) { + printk(KERN_ERR "epca_setup: Invalid board status 0x%x\n", + board.status); + invalid_lilo_config = 1; + setup_error_code |= INVALID_BOARD_STATUS; + return; + } + last = index; + break; + case 2: + board.type = ints[index]; + if (board.type >= PCIXEM) { + printk(KERN_ERR "epca_setup: Invalid board type 0x%x\n", board.type); + invalid_lilo_config = 1; + setup_error_code |= INVALID_BOARD_TYPE; + return; + } + last = index; + break; + case 3: + board.altpin = ints[index]; + if (board.altpin > 1) { + printk(KERN_ERR "epca_setup: Invalid board altpin 0x%x\n", board.altpin); + invalid_lilo_config = 1; + setup_error_code |= INVALID_ALTPIN; + return; + } + last = index; + break; + + case 4: + board.numports = ints[index]; + if (board.numports < 2 || board.numports > 256) { + printk(KERN_ERR "epca_setup: Invalid board numports 0x%x\n", board.numports); + invalid_lilo_config = 1; + setup_error_code |= INVALID_NUM_PORTS; + return; + } + nbdevs += board.numports; + last = index; + break; + + case 5: + board.port = ints[index]; + if (ints[index] <= 0) { + printk(KERN_ERR "epca_setup: Invalid io port 0x%x\n", (unsigned int)board.port); + invalid_lilo_config = 1; + setup_error_code |= INVALID_PORT_BASE; + return; + } + last = index; + break; + + case 6: + board.membase = ints[index]; + if (ints[index] <= 0) { + printk(KERN_ERR "epca_setup: Invalid memory base 0x%x\n", + (unsigned int)board.membase); + invalid_lilo_config = 1; + setup_error_code |= INVALID_MEM_BASE; + return; + } + last = index; + break; + + default: + printk(KERN_ERR " - epca_setup: Too many integer parms\n"); + return; + + } /* End parse switch */ + + while (str && *str) { /* Begin while there is a string arg */ + /* find the next comma or terminator */ + temp = str; + /* While string is not null, and a comma hasn't been found */ + while (*temp && (*temp != ',')) + temp++; + if (!*temp) + temp = NULL; + else + *temp++ = 0; + /* Set index to the number of args + 1 */ + index = last + 1; + + switch (index) { + case 1: + len = strlen(str); + if (strncmp("Disable", str, len) == 0) + board.status = 0; + else if (strncmp("Enable", str, len) == 0) + board.status = 1; + else { + printk(KERN_ERR "epca_setup: Invalid status %s\n", str); + invalid_lilo_config = 1; + setup_error_code |= INVALID_BOARD_STATUS; + return; + } + last = index; + break; + + case 2: + for (loop = 0; loop < EPCA_NUM_TYPES; loop++) + if (strcmp(board_desc[loop], str) == 0) + break; + /* + * If the index incremented above refers to a + * legitamate board type set it here. + */ + if (index < EPCA_NUM_TYPES) + board.type = loop; + else { + printk(KERN_ERR "epca_setup: Invalid board type: %s\n", str); + invalid_lilo_config = 1; + setup_error_code |= INVALID_BOARD_TYPE; + return; + } + last = index; + break; + + case 3: + len = strlen(str); + if (strncmp("Disable", str, len) == 0) + board.altpin = 0; + else if (strncmp("Enable", str, len) == 0) + board.altpin = 1; + else { + printk(KERN_ERR "epca_setup: Invalid altpin %s\n", str); + invalid_lilo_config = 1; + setup_error_code |= INVALID_ALTPIN; + return; + } + last = index; + break; + + case 4: + t2 = str; + while (isdigit(*t2)) + t2++; + + if (*t2) { + printk(KERN_ERR "epca_setup: Invalid port count %s\n", str); + invalid_lilo_config = 1; + setup_error_code |= INVALID_NUM_PORTS; + return; + } + + /* + * There is not a man page for simple_strtoul but the + * code can be found in vsprintf.c. The first argument + * is the string to translate (To an unsigned long + * obviously), the second argument can be the address + * of any character variable or a NULL. If a variable + * is given, the end pointer of the string will be + * stored in that variable; if a NULL is given the end + * pointer will not be returned. The last argument is + * the base to use. If a 0 is indicated, the routine + * will attempt to determine the proper base by looking + * at the values prefix (A '0' for octal, a 'x' for + * hex, etc ... If a value is given it will use that + * value as the base. + */ + board.numports = simple_strtoul(str, NULL, 0); + nbdevs += board.numports; + last = index; + break; + + case 5: + t2 = str; + while (isxdigit(*t2)) + t2++; + + if (*t2) { + printk(KERN_ERR "epca_setup: Invalid i/o address %s\n", str); + invalid_lilo_config = 1; + setup_error_code |= INVALID_PORT_BASE; + return; + } + + board.port = simple_strtoul(str, NULL, 16); + last = index; + break; + + case 6: + t2 = str; + while (isxdigit(*t2)) + t2++; + + if (*t2) { + printk(KERN_ERR "epca_setup: Invalid memory base %s\n", str); + invalid_lilo_config = 1; + setup_error_code |= INVALID_MEM_BASE; + return; + } + board.membase = simple_strtoul(str, NULL, 16); + last = index; + break; + default: + printk(KERN_ERR "epca: Too many string parms\n"); + return; + } + str = temp; + } /* End while there is a string arg */ + + if (last < 6) { + printk(KERN_ERR "epca: Insufficient parms specified\n"); + return; + } + + /* I should REALLY validate the stuff here */ + /* Copies our local copy of board into boards */ + memcpy((void *)&boards[num_cards], (void *)&board, sizeof(board)); + /* Does this get called once per lilo arg are what ? */ + printk(KERN_INFO "PC/Xx: Added board %i, %s %i ports at 0x%4.4X base 0x%6.6X\n", + num_cards, board_desc[board.type], + board.numports, (int)board.port, (unsigned int) board.membase); + num_cards++; +} + +static int __init epca_real_setup(char *str) +{ + int ints[11]; + + epca_setup(get_options(str, 11, ints), ints); + return 1; +} + +__setup("digiepca", epca_real_setup); +#endif + +enum epic_board_types { + brd_xr = 0, + brd_xem, + brd_cx, + brd_xrj, +}; + +/* indexed directly by epic_board_types enum */ +static struct { + unsigned char board_type; + unsigned bar_idx; /* PCI base address region */ +} epca_info_tbl[] = { + { PCIXR, 0, }, + { PCIXEM, 0, }, + { PCICX, 0, }, + { PCIXRJ, 2, }, +}; + +static int __devinit epca_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + static int board_num = -1; + int board_idx, info_idx = ent->driver_data; + unsigned long addr; + + if (pci_enable_device(pdev)) + return -EIO; + + board_num++; + board_idx = board_num + num_cards; + if (board_idx >= MAXBOARDS) + goto err_out; + + addr = pci_resource_start(pdev, epca_info_tbl[info_idx].bar_idx); + if (!addr) { + printk(KERN_ERR PFX "PCI region #%d not available (size 0)\n", + epca_info_tbl[info_idx].bar_idx); + goto err_out; + } + + boards[board_idx].status = ENABLED; + boards[board_idx].type = epca_info_tbl[info_idx].board_type; + boards[board_idx].numports = 0x0; + boards[board_idx].port = addr + PCI_IO_OFFSET; + boards[board_idx].membase = addr; + + if (!request_mem_region(addr + PCI_IO_OFFSET, 0x200000, "epca")) { + printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", + 0x200000, addr + PCI_IO_OFFSET); + goto err_out; + } + + boards[board_idx].re_map_port = ioremap_nocache(addr + PCI_IO_OFFSET, + 0x200000); + if (!boards[board_idx].re_map_port) { + printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", + 0x200000, addr + PCI_IO_OFFSET); + goto err_out_free_pciio; + } + + if (!request_mem_region(addr, 0x200000, "epca")) { + printk(KERN_ERR PFX "resource 0x%x @ 0x%lx unavailable\n", + 0x200000, addr); + goto err_out_free_iounmap; + } + + boards[board_idx].re_map_membase = ioremap_nocache(addr, 0x200000); + if (!boards[board_idx].re_map_membase) { + printk(KERN_ERR PFX "cannot map 0x%x @ 0x%lx\n", + 0x200000, addr + PCI_IO_OFFSET); + goto err_out_free_memregion; + } + + /* + * I don't know what the below does, but the hardware guys say its + * required on everything except PLX (In this case XRJ). + */ + if (info_idx != brd_xrj) { + pci_write_config_byte(pdev, 0x40, 0); + pci_write_config_byte(pdev, 0x46, 0); + } + + return 0; + +err_out_free_memregion: + release_mem_region(addr, 0x200000); +err_out_free_iounmap: + iounmap(boards[board_idx].re_map_port); +err_out_free_pciio: + release_mem_region(addr + PCI_IO_OFFSET, 0x200000); +err_out: + return -ENODEV; +} + + +static struct pci_device_id epca_pci_tbl[] = { + { PCI_VENDOR_DIGI, PCI_DEVICE_XR, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xr }, + { PCI_VENDOR_DIGI, PCI_DEVICE_XEM, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xem }, + { PCI_VENDOR_DIGI, PCI_DEVICE_CX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_cx }, + { PCI_VENDOR_DIGI, PCI_DEVICE_XRJ, PCI_ANY_ID, PCI_ANY_ID, 0, 0, brd_xrj }, + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, epca_pci_tbl); + +static int __init init_PCI(void) +{ + memset(&epca_driver, 0, sizeof(epca_driver)); + epca_driver.name = "epca"; + epca_driver.id_table = epca_pci_tbl; + epca_driver.probe = epca_init_one; + + return pci_register_driver(&epca_driver); +} + +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/tty/epca.h b/drivers/staging/tty/epca.h new file mode 100644 index 000000000000..d414bf2dbf7c --- /dev/null +++ b/drivers/staging/tty/epca.h @@ -0,0 +1,158 @@ +#define XEMPORTS 0xC02 +#define XEPORTS 0xC22 + +#define MAX_ALLOC 0x100 + +#define MAXBOARDS 12 +#define FEPCODESEG 0x0200L +#define FEPCODE 0x2000L +#define BIOSCODE 0xf800L + +#define MISCGLOBAL 0x0C00L +#define NPORT 0x0C22L +#define MBOX 0x0C40L +#define PORTBASE 0x0C90L + +/* Begin code defines used for epca_setup */ + +#define INVALID_BOARD_TYPE 0x1 +#define INVALID_NUM_PORTS 0x2 +#define INVALID_MEM_BASE 0x4 +#define INVALID_PORT_BASE 0x8 +#define INVALID_BOARD_STATUS 0x10 +#define INVALID_ALTPIN 0x20 + +/* End code defines used for epca_setup */ + + +#define FEPCLR 0x00 +#define FEPMEM 0x02 +#define FEPRST 0x04 +#define FEPINT 0x08 +#define FEPMASK 0x0e +#define FEPWIN 0x80 + +#define PCXE 0 +#define PCXEVE 1 +#define PCXEM 2 +#define EISAXEM 3 +#define PC64XE 4 +#define PCXI 5 +#define PCIXEM 7 +#define PCICX 8 +#define PCIXR 9 +#define PCIXRJ 10 +#define EPCA_NUM_TYPES 6 + + +static char *board_desc[] = +{ + "PC/Xe", + "PC/Xeve", + "PC/Xem", + "EISA/Xem", + "PC/64Xe", + "PC/Xi", + "unknown", + "PCI/Xem", + "PCI/CX", + "PCI/Xr", + "PCI/Xrj", +}; + +#define STARTC 021 +#define STOPC 023 +#define IAIXON 0x2000 + + +#define TXSTOPPED 0x1 +#define LOWWAIT 0x2 +#define EMPTYWAIT 0x4 +#define RXSTOPPED 0x8 +#define TXBUSY 0x10 + +#define DISABLED 0 +#define ENABLED 1 +#define OFF 0 +#define ON 1 + +#define FEPTIMEOUT 200000 +#define SERIAL_TYPE_INFO 3 +#define EPCA_EVENT_HANGUP 1 +#define EPCA_MAGIC 0x5c6df104L + +struct channel +{ + long magic; + struct tty_port port; + unsigned char boardnum; + unsigned char channelnum; + unsigned char omodem; /* FEP output modem status */ + unsigned char imodem; /* FEP input modem status */ + unsigned char modemfake; /* Modem values to be forced */ + unsigned char modem; /* Force values */ + unsigned char hflow; + unsigned char dsr; + unsigned char dcd; + unsigned char m_rts ; /* The bits used in whatever FEP */ + unsigned char m_dcd ; /* is indiginous to this board to */ + unsigned char m_dsr ; /* represent each of the physical */ + unsigned char m_cts ; /* handshake lines */ + unsigned char m_ri ; + unsigned char m_dtr ; + unsigned char stopc; + unsigned char startc; + unsigned char stopca; + unsigned char startca; + unsigned char fepstopc; + unsigned char fepstartc; + unsigned char fepstopca; + unsigned char fepstartca; + unsigned char txwin; + unsigned char rxwin; + unsigned short fepiflag; + unsigned short fepcflag; + unsigned short fepoflag; + unsigned short txbufhead; + unsigned short txbufsize; + unsigned short rxbufhead; + unsigned short rxbufsize; + int close_delay; + unsigned long event; + uint dev; + unsigned long statusflags; + unsigned long c_iflag; + unsigned long c_cflag; + unsigned long c_lflag; + unsigned long c_oflag; + unsigned char __iomem *txptr; + unsigned char __iomem *rxptr; + struct board_info *board; + struct board_chan __iomem *brdchan; + struct digi_struct digiext; + struct work_struct tqueue; + struct global_data __iomem *mailbox; +}; + +struct board_info +{ + unsigned char status; + unsigned char type; + unsigned char altpin; + unsigned short numports; + unsigned long port; + unsigned long membase; + void __iomem *re_map_port; + void __iomem *re_map_membase; + unsigned long memory_seg; + void ( * memwinon ) (struct board_info *, unsigned int) ; + void ( * memwinoff ) (struct board_info *, unsigned int) ; + void ( * globalwinon ) (struct channel *) ; + void ( * txwinon ) (struct channel *) ; + void ( * rxwinon ) (struct channel *) ; + void ( * memoff ) (struct channel *) ; + void ( * assertgwinon ) (struct channel *) ; + void ( * assertmemoff ) (struct channel *) ; + unsigned char poller_inhibited ; +}; + diff --git a/drivers/staging/tty/epcaconfig.h b/drivers/staging/tty/epcaconfig.h new file mode 100644 index 000000000000..55dec067078e --- /dev/null +++ b/drivers/staging/tty/epcaconfig.h @@ -0,0 +1,7 @@ +#define NUMCARDS 0 +#define NBDEVS 0 + +struct board_info static_boards[NUMCARDS]={ +}; + +/* DO NOT HAND EDIT THIS FILE! */ diff --git a/drivers/staging/tty/ip2/Makefile b/drivers/staging/tty/ip2/Makefile new file mode 100644 index 000000000000..7b78e0dfc5b0 --- /dev/null +++ b/drivers/staging/tty/ip2/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for the Computone IntelliPort Plus Driver +# + +obj-$(CONFIG_COMPUTONE) += ip2.o + +ip2-y := ip2main.o + diff --git a/drivers/staging/tty/ip2/i2cmd.c b/drivers/staging/tty/ip2/i2cmd.c new file mode 100644 index 000000000000..e7af647800b6 --- /dev/null +++ b/drivers/staging/tty/ip2/i2cmd.c @@ -0,0 +1,210 @@ +/******************************************************************************* +* +* (c) 1998 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Definition table for In-line and Bypass commands. Applicable +* only when the standard loadware is active. (This is included +* source code, not a separate compilation module.) +* +*******************************************************************************/ + +//------------------------------------------------------------------------------ +// +// Revision History: +// +// 10 October 1991 MAG First Draft +// 7 November 1991 MAG Reflects additional commands. +// 24 February 1992 MAG Additional commands for 1.4.x loadware +// 11 March 1992 MAG Additional commands +// 30 March 1992 MAG Additional command: CMD_DSS_NOW +// 18 May 1992 MAG Discovered commands 39 & 40 must be at the end of a +// packet: affects implementation. +//------------------------------------------------------------------------------ + +//************ +//* Includes * +//************ + +#include "i2cmd.h" /* To get some bit-defines */ + +//------------------------------------------------------------------------------ +// Here is the table of global arrays which represent each type of command +// supported in the IntelliPort standard loadware. See also i2cmd.h +// for a more complete explanation of what is going on. +//------------------------------------------------------------------------------ + +// Here are the various globals: note that the names are not used except through +// the macros defined in i2cmd.h. Also note that although they are character +// arrays here (for extendability) they are cast to structure pointers in the +// i2cmd.h macros. See i2cmd.h for flags definitions. + +// Length Flags Command +static UCHAR ct02[] = { 1, BTH, 0x02 }; // DTR UP +static UCHAR ct03[] = { 1, BTH, 0x03 }; // DTR DN +static UCHAR ct04[] = { 1, BTH, 0x04 }; // RTS UP +static UCHAR ct05[] = { 1, BTH, 0x05 }; // RTS DN +static UCHAR ct06[] = { 1, BYP, 0x06 }; // START FL +static UCHAR ct07[] = { 2, BTH, 0x07,0 }; // BAUD +static UCHAR ct08[] = { 2, BTH, 0x08,0 }; // BITS +static UCHAR ct09[] = { 2, BTH, 0x09,0 }; // STOP +static UCHAR ct10[] = { 2, BTH, 0x0A,0 }; // PARITY +static UCHAR ct11[] = { 2, BTH, 0x0B,0 }; // XON +static UCHAR ct12[] = { 2, BTH, 0x0C,0 }; // XOFF +static UCHAR ct13[] = { 1, BTH, 0x0D }; // STOP FL +static UCHAR ct14[] = { 1, BYP|VIP, 0x0E }; // ACK HOTK +//static UCHAR ct15[]={ 2, BTH|VIP, 0x0F,0 }; // IRQ SET +static UCHAR ct16[] = { 2, INL, 0x10,0 }; // IXONOPTS +static UCHAR ct17[] = { 2, INL, 0x11,0 }; // OXONOPTS +static UCHAR ct18[] = { 1, INL, 0x12 }; // CTSENAB +static UCHAR ct19[] = { 1, BTH, 0x13 }; // CTSDSAB +static UCHAR ct20[] = { 1, INL, 0x14 }; // DCDENAB +static UCHAR ct21[] = { 1, BTH, 0x15 }; // DCDDSAB +static UCHAR ct22[] = { 1, BTH, 0x16 }; // DSRENAB +static UCHAR ct23[] = { 1, BTH, 0x17 }; // DSRDSAB +static UCHAR ct24[] = { 1, BTH, 0x18 }; // RIENAB +static UCHAR ct25[] = { 1, BTH, 0x19 }; // RIDSAB +static UCHAR ct26[] = { 2, BTH, 0x1A,0 }; // BRKENAB +static UCHAR ct27[] = { 1, BTH, 0x1B }; // BRKDSAB +//static UCHAR ct28[]={ 2, BTH, 0x1C,0 }; // MAXBLOKSIZE +//static UCHAR ct29[]={ 2, 0, 0x1D,0 }; // reserved +static UCHAR ct30[] = { 1, INL, 0x1E }; // CTSFLOWENAB +static UCHAR ct31[] = { 1, INL, 0x1F }; // CTSFLOWDSAB +static UCHAR ct32[] = { 1, INL, 0x20 }; // RTSFLOWENAB +static UCHAR ct33[] = { 1, INL, 0x21 }; // RTSFLOWDSAB +static UCHAR ct34[] = { 2, BTH, 0x22,0 }; // ISTRIPMODE +static UCHAR ct35[] = { 2, BTH|END, 0x23,0 }; // SENDBREAK +static UCHAR ct36[] = { 2, BTH, 0x24,0 }; // SETERRMODE +//static UCHAR ct36a[]={ 3, INL, 0x24,0,0 }; // SET_REPLACE + +// The following is listed for completeness, but should never be sent directly +// by user-level code. It is sent only by library routines in response to data +// movement. +//static UCHAR ct37[]={ 5, BYP|VIP, 0x25,0,0,0,0 }; // FLOW PACKET + +// Back to normal +//static UCHAR ct38[] = {11, BTH|VAR, 0x26,0,0,0,0,0,0,0,0,0,0 }; // DEF KEY SEQ +//static UCHAR ct39[]={ 3, BTH|END, 0x27,0,0 }; // OPOSTON +//static UCHAR ct40[]={ 1, BTH|END, 0x28 }; // OPOSTOFF +static UCHAR ct41[] = { 1, BYP, 0x29 }; // RESUME +//static UCHAR ct42[]={ 2, BTH, 0x2A,0 }; // TXBAUD +//static UCHAR ct43[]={ 2, BTH, 0x2B,0 }; // RXBAUD +//static UCHAR ct44[]={ 2, BTH, 0x2C,0 }; // MS PING +//static UCHAR ct45[]={ 1, BTH, 0x2D }; // HOTENAB +//static UCHAR ct46[]={ 1, BTH, 0x2E }; // HOTDSAB +//static UCHAR ct47[]={ 7, BTH, 0x2F,0,0,0,0,0,0 }; // UNIX FLAGS +//static UCHAR ct48[]={ 1, BTH, 0x30 }; // DSRFLOWENAB +//static UCHAR ct49[]={ 1, BTH, 0x31 }; // DSRFLOWDSAB +//static UCHAR ct50[]={ 1, BTH, 0x32 }; // DTRFLOWENAB +//static UCHAR ct51[]={ 1, BTH, 0x33 }; // DTRFLOWDSAB +//static UCHAR ct52[]={ 1, BTH, 0x34 }; // BAUDTABRESET +//static UCHAR ct53[] = { 3, BTH, 0x35,0,0 }; // BAUDREMAP +static UCHAR ct54[] = { 3, BTH, 0x36,0,0 }; // CUSTOMBAUD1 +static UCHAR ct55[] = { 3, BTH, 0x37,0,0 }; // CUSTOMBAUD2 +static UCHAR ct56[] = { 2, BTH|END, 0x38,0 }; // PAUSE +static UCHAR ct57[] = { 1, BYP, 0x39 }; // SUSPEND +static UCHAR ct58[] = { 1, BYP, 0x3A }; // UNSUSPEND +static UCHAR ct59[] = { 2, BTH, 0x3B,0 }; // PARITYCHK +static UCHAR ct60[] = { 1, INL|VIP, 0x3C }; // BOOKMARKREQ +//static UCHAR ct61[]={ 2, BTH, 0x3D,0 }; // INTERNALLOOP +//static UCHAR ct62[]={ 2, BTH, 0x3E,0 }; // HOTKTIMEOUT +static UCHAR ct63[] = { 2, INL, 0x3F,0 }; // SETTXON +static UCHAR ct64[] = { 2, INL, 0x40,0 }; // SETTXOFF +//static UCHAR ct65[]={ 2, BTH, 0x41,0 }; // SETAUTORTS +//static UCHAR ct66[]={ 2, BTH, 0x42,0 }; // SETHIGHWAT +//static UCHAR ct67[]={ 2, BYP, 0x43,0 }; // STARTSELFL +//static UCHAR ct68[]={ 2, INL, 0x44,0 }; // ENDSELFL +//static UCHAR ct69[]={ 1, BYP, 0x45 }; // HWFLOW_OFF +//static UCHAR ct70[]={ 1, BTH, 0x46 }; // ODSRFL_ENAB +//static UCHAR ct71[]={ 1, BTH, 0x47 }; // ODSRFL_DSAB +//static UCHAR ct72[]={ 1, BTH, 0x48 }; // ODCDFL_ENAB +//static UCHAR ct73[]={ 1, BTH, 0x49 }; // ODCDFL_DSAB +//static UCHAR ct74[]={ 2, BTH, 0x4A,0 }; // LOADLEVEL +//static UCHAR ct75[]={ 2, BTH, 0x4B,0 }; // STATDATA +//static UCHAR ct76[]={ 1, BYP, 0x4C }; // BREAK_ON +//static UCHAR ct77[]={ 1, BYP, 0x4D }; // BREAK_OFF +//static UCHAR ct78[]={ 1, BYP, 0x4E }; // GETFC +static UCHAR ct79[] = { 2, BYP, 0x4F,0 }; // XMIT_NOW +//static UCHAR ct80[]={ 4, BTH, 0x50,0,0,0 }; // DIVISOR_LATCH +//static UCHAR ct81[]={ 1, BYP, 0x51 }; // GET_STATUS +//static UCHAR ct82[]={ 1, BYP, 0x52 }; // GET_TXCNT +//static UCHAR ct83[]={ 1, BYP, 0x53 }; // GET_RXCNT +//static UCHAR ct84[]={ 1, BYP, 0x54 }; // GET_BOXIDS +//static UCHAR ct85[]={10, BYP, 0x55,0,0,0,0,0,0,0,0,0 }; // ENAB_MULT +//static UCHAR ct86[]={ 2, BTH, 0x56,0 }; // RCV_ENABLE +static UCHAR ct87[] = { 1, BYP, 0x57 }; // HW_TEST +//static UCHAR ct88[]={ 3, BTH, 0x58,0,0 }; // RCV_THRESHOLD +//static UCHAR ct90[]={ 3, BYP, 0x5A,0,0 }; // Set SILO +//static UCHAR ct91[]={ 2, BYP, 0x5B,0 }; // timed break + +// Some composite commands as well +//static UCHAR cc01[]={ 2, BTH, 0x02,0x04 }; // DTR & RTS UP +//static UCHAR cc02[]={ 2, BTH, 0x03,0x05 }; // DTR & RTS DN + +//******** +//* Code * +//******** + +//****************************************************************************** +// Function: i2cmdUnixFlags(iflag, cflag, lflag) +// Parameters: Unix tty flags +// +// Returns: Pointer to command structure +// +// Description: +// +// This routine sets the parameters of command 47 and returns a pointer to the +// appropriate structure. +//****************************************************************************** +#if 0 +cmdSyntaxPtr +i2cmdUnixFlags(unsigned short iflag,unsigned short cflag,unsigned short lflag) +{ + cmdSyntaxPtr pCM = (cmdSyntaxPtr) ct47; + + pCM->cmd[1] = (unsigned char) iflag; + pCM->cmd[2] = (unsigned char) (iflag >> 8); + pCM->cmd[3] = (unsigned char) cflag; + pCM->cmd[4] = (unsigned char) (cflag >> 8); + pCM->cmd[5] = (unsigned char) lflag; + pCM->cmd[6] = (unsigned char) (lflag >> 8); + return pCM; +} +#endif /* 0 */ + +//****************************************************************************** +// Function: i2cmdBaudDef(which, rate) +// Parameters: ? +// +// Returns: Pointer to command structure +// +// Description: +// +// This routine sets the parameters of commands 54 or 55 (according to the +// argument which), and returns a pointer to the appropriate structure. +//****************************************************************************** +static cmdSyntaxPtr +i2cmdBaudDef(int which, unsigned short rate) +{ + cmdSyntaxPtr pCM; + + switch(which) + { + case 1: + pCM = (cmdSyntaxPtr) ct54; + break; + default: + case 2: + pCM = (cmdSyntaxPtr) ct55; + break; + } + pCM->cmd[1] = (unsigned char) rate; + pCM->cmd[2] = (unsigned char) (rate >> 8); + return pCM; +} + diff --git a/drivers/staging/tty/ip2/i2cmd.h b/drivers/staging/tty/ip2/i2cmd.h new file mode 100644 index 000000000000..29277ec6b8ed --- /dev/null +++ b/drivers/staging/tty/ip2/i2cmd.h @@ -0,0 +1,630 @@ +/******************************************************************************* +* +* (c) 1999 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Definitions and support for In-line and Bypass commands. +* Applicable only when the standard loadware is active. +* +*******************************************************************************/ +//------------------------------------------------------------------------------ +// Revision History: +// +// 10 October 1991 MAG First Draft +// 7 November 1991 MAG Reflects some new commands +// 20 February 1992 MAG CMD_HOTACK corrected: no argument. +// 24 February 1992 MAG Support added for new commands for 1.4.x loadware. +// 11 March 1992 MAG Additional commands. +// 16 March 1992 MAG Additional commands. +// 30 March 1992 MAG Additional command: CMD_DSS_NOW +// 18 May 1992 MAG Changed CMD_OPOST +// +//------------------------------------------------------------------------------ +#ifndef I2CMD_H // To prevent multiple includes +#define I2CMD_H 1 + +#include "ip2types.h" + +// This module is designed to provide a uniform method of sending commands to +// the board through command packets. The difficulty is, some commands take +// parameters, others do not. Furthermore, it is often useful to send several +// commands to the same channel as part of the same packet. (See also i2pack.h.) +// +// This module is designed so that the caller should not be responsible for +// remembering the exact syntax of each command, or at least so that the +// compiler could check things somewhat. I'll explain as we go... +// +// First, a structure which can embody the syntax of each type of command. +// +typedef struct _cmdSyntax +{ + UCHAR length; // Number of bytes in the command + UCHAR flags; // Information about the command (see below) + + // The command and its parameters, which may be of arbitrary length. Don't + // worry yet how the parameters will be initialized; macros later take care + // of it. Also, don't worry about the arbitrary length issue; this structure + // is never used to allocate space (see i2cmd.c). + UCHAR cmd[2]; +} cmdSyntax, *cmdSyntaxPtr; + +// Bit assignments for flags + +#define INL 1 // Set if suitable for inline commands +#define BYP 2 // Set if suitable for bypass commands +#define BTH (INL|BYP) // suitable for either! +#define END 4 // Set if this must be the last command in a block +#define VIP 8 // Set if this command is special in some way and really + // should only be sent from the library-level and not + // directly from user-level +#define VAR 0x10 // This command is of variable length! + +// Declarations for the global arrays used to bear the commands and their +// arguments. +// +// Note: Since these are globals and the arguments might change, it is important +// that the library routine COPY these into buffers from whence they would be +// sent, rather than merely storing the pointers. In multi-threaded +// environments, important that the copy should obtain before any context switch +// is allowed. Also, for parameterized commands, DO NOT ISSUE THE SAME COMMAND +// MORE THAN ONCE WITH THE SAME PARAMETERS in the same call. +// +static UCHAR ct02[]; +static UCHAR ct03[]; +static UCHAR ct04[]; +static UCHAR ct05[]; +static UCHAR ct06[]; +static UCHAR ct07[]; +static UCHAR ct08[]; +static UCHAR ct09[]; +static UCHAR ct10[]; +static UCHAR ct11[]; +static UCHAR ct12[]; +static UCHAR ct13[]; +static UCHAR ct14[]; +static UCHAR ct15[]; +static UCHAR ct16[]; +static UCHAR ct17[]; +static UCHAR ct18[]; +static UCHAR ct19[]; +static UCHAR ct20[]; +static UCHAR ct21[]; +static UCHAR ct22[]; +static UCHAR ct23[]; +static UCHAR ct24[]; +static UCHAR ct25[]; +static UCHAR ct26[]; +static UCHAR ct27[]; +static UCHAR ct28[]; +static UCHAR ct29[]; +static UCHAR ct30[]; +static UCHAR ct31[]; +static UCHAR ct32[]; +static UCHAR ct33[]; +static UCHAR ct34[]; +static UCHAR ct35[]; +static UCHAR ct36[]; +static UCHAR ct36a[]; +static UCHAR ct41[]; +static UCHAR ct42[]; +static UCHAR ct43[]; +static UCHAR ct44[]; +static UCHAR ct45[]; +static UCHAR ct46[]; +static UCHAR ct48[]; +static UCHAR ct49[]; +static UCHAR ct50[]; +static UCHAR ct51[]; +static UCHAR ct52[]; +static UCHAR ct56[]; +static UCHAR ct57[]; +static UCHAR ct58[]; +static UCHAR ct59[]; +static UCHAR ct60[]; +static UCHAR ct61[]; +static UCHAR ct62[]; +static UCHAR ct63[]; +static UCHAR ct64[]; +static UCHAR ct65[]; +static UCHAR ct66[]; +static UCHAR ct67[]; +static UCHAR ct68[]; +static UCHAR ct69[]; +static UCHAR ct70[]; +static UCHAR ct71[]; +static UCHAR ct72[]; +static UCHAR ct73[]; +static UCHAR ct74[]; +static UCHAR ct75[]; +static UCHAR ct76[]; +static UCHAR ct77[]; +static UCHAR ct78[]; +static UCHAR ct79[]; +static UCHAR ct80[]; +static UCHAR ct81[]; +static UCHAR ct82[]; +static UCHAR ct83[]; +static UCHAR ct84[]; +static UCHAR ct85[]; +static UCHAR ct86[]; +static UCHAR ct87[]; +static UCHAR ct88[]; +static UCHAR ct89[]; +static UCHAR ct90[]; +static UCHAR ct91[]; +static UCHAR cc01[]; +static UCHAR cc02[]; + +// Now, refer to i2cmd.c, and see the character arrays defined there. They are +// cast here to cmdSyntaxPtr. +// +// There are library functions for issuing bypass or inline commands. These +// functions take one or more arguments of the type cmdSyntaxPtr. The routine +// then can figure out how long each command is supposed to be and easily add it +// to the list. +// +// For ease of use, we define manifests which return pointers to appropriate +// cmdSyntaxPtr things. But some commands also take arguments. If a single +// argument is used, we define a macro which performs the single assignment and +// (through the expedient of a comma expression) references the appropriate +// pointer. For commands requiring several arguments, we actually define a +// function to perform the assignments. + +#define CMD_DTRUP (cmdSyntaxPtr)(ct02) // Raise DTR +#define CMD_DTRDN (cmdSyntaxPtr)(ct03) // Lower DTR +#define CMD_RTSUP (cmdSyntaxPtr)(ct04) // Raise RTS +#define CMD_RTSDN (cmdSyntaxPtr)(ct05) // Lower RTS +#define CMD_STARTFL (cmdSyntaxPtr)(ct06) // Start Flushing Data + +#define CMD_DTRRTS_UP (cmdSyntaxPtr)(cc01) // Raise DTR and RTS +#define CMD_DTRRTS_DN (cmdSyntaxPtr)(cc02) // Lower DTR and RTS + +// Set Baud Rate for transmit and receive +#define CMD_SETBAUD(arg) \ + (((cmdSyntaxPtr)(ct07))->cmd[1] = (arg),(cmdSyntaxPtr)(ct07)) + +#define CBR_50 1 +#define CBR_75 2 +#define CBR_110 3 +#define CBR_134 4 +#define CBR_150 5 +#define CBR_200 6 +#define CBR_300 7 +#define CBR_600 8 +#define CBR_1200 9 +#define CBR_1800 10 +#define CBR_2400 11 +#define CBR_4800 12 +#define CBR_9600 13 +#define CBR_19200 14 +#define CBR_38400 15 +#define CBR_2000 16 +#define CBR_3600 17 +#define CBR_7200 18 +#define CBR_56000 19 +#define CBR_57600 20 +#define CBR_64000 21 +#define CBR_76800 22 +#define CBR_115200 23 +#define CBR_C1 24 // Custom baud rate 1 +#define CBR_C2 25 // Custom baud rate 2 +#define CBR_153600 26 +#define CBR_230400 27 +#define CBR_307200 28 +#define CBR_460800 29 +#define CBR_921600 30 + +// Set Character size +// +#define CMD_SETBITS(arg) \ + (((cmdSyntaxPtr)(ct08))->cmd[1] = (arg),(cmdSyntaxPtr)(ct08)) + +#define CSZ_5 0 +#define CSZ_6 1 +#define CSZ_7 2 +#define CSZ_8 3 + +// Set number of stop bits +// +#define CMD_SETSTOP(arg) \ + (((cmdSyntaxPtr)(ct09))->cmd[1] = (arg),(cmdSyntaxPtr)(ct09)) + +#define CST_1 0 +#define CST_15 1 // 1.5 stop bits +#define CST_2 2 + +// Set parity option +// +#define CMD_SETPAR(arg) \ + (((cmdSyntaxPtr)(ct10))->cmd[1] = (arg),(cmdSyntaxPtr)(ct10)) + +#define CSP_NP 0 // no parity +#define CSP_OD 1 // odd parity +#define CSP_EV 2 // Even parity +#define CSP_SP 3 // Space parity +#define CSP_MK 4 // Mark parity + +// Define xon char for transmitter flow control +// +#define CMD_DEF_IXON(arg) \ + (((cmdSyntaxPtr)(ct11))->cmd[1] = (arg),(cmdSyntaxPtr)(ct11)) + +// Define xoff char for transmitter flow control +// +#define CMD_DEF_IXOFF(arg) \ + (((cmdSyntaxPtr)(ct12))->cmd[1] = (arg),(cmdSyntaxPtr)(ct12)) + +#define CMD_STOPFL (cmdSyntaxPtr)(ct13) // Stop Flushing data + +// Acknowledge receipt of hotkey signal +// +#define CMD_HOTACK (cmdSyntaxPtr)(ct14) + +// Define irq level to use. Should actually be sent by library-level code, not +// directly from user... +// +#define CMDVALUE_IRQ 15 // For library use at initialization. Until this command + // is sent, board processing doesn't really start. +#define CMD_SET_IRQ(arg) \ + (((cmdSyntaxPtr)(ct15))->cmd[1] = (arg),(cmdSyntaxPtr)(ct15)) + +#define CIR_POLL 0 // No IRQ - Poll +#define CIR_3 3 // IRQ 3 +#define CIR_4 4 // IRQ 4 +#define CIR_5 5 // IRQ 5 +#define CIR_7 7 // IRQ 7 +#define CIR_10 10 // IRQ 10 +#define CIR_11 11 // IRQ 11 +#define CIR_12 12 // IRQ 12 +#define CIR_15 15 // IRQ 15 + +// Select transmit flow xon/xoff options +// +#define CMD_IXON_OPT(arg) \ + (((cmdSyntaxPtr)(ct16))->cmd[1] = (arg),(cmdSyntaxPtr)(ct16)) + +#define CIX_NONE 0 // Incoming Xon/Xoff characters not special +#define CIX_XON 1 // Xoff disable, Xon enable +#define CIX_XANY 2 // Xoff disable, any key enable + +// Select receive flow xon/xoff options +// +#define CMD_OXON_OPT(arg) \ + (((cmdSyntaxPtr)(ct17))->cmd[1] = (arg),(cmdSyntaxPtr)(ct17)) + +#define COX_NONE 0 // Don't send Xon/Xoff +#define COX_XON 1 // Send xon/xoff to start/stop incoming data + + +#define CMD_CTS_REP (cmdSyntaxPtr)(ct18) // Enable CTS reporting +#define CMD_CTS_NREP (cmdSyntaxPtr)(ct19) // Disable CTS reporting + +#define CMD_DCD_REP (cmdSyntaxPtr)(ct20) // Enable DCD reporting +#define CMD_DCD_NREP (cmdSyntaxPtr)(ct21) // Disable DCD reporting + +#define CMD_DSR_REP (cmdSyntaxPtr)(ct22) // Enable DSR reporting +#define CMD_DSR_NREP (cmdSyntaxPtr)(ct23) // Disable DSR reporting + +#define CMD_RI_REP (cmdSyntaxPtr)(ct24) // Enable RI reporting +#define CMD_RI_NREP (cmdSyntaxPtr)(ct25) // Disable RI reporting + +// Enable break reporting and select style +// +#define CMD_BRK_REP(arg) \ + (((cmdSyntaxPtr)(ct26))->cmd[1] = (arg),(cmdSyntaxPtr)(ct26)) + +#define CBK_STAT 0x00 // Report breaks as a status (exception,irq) +#define CBK_NULL 0x01 // Report breaks as a good null +#define CBK_STAT_SEQ 0x02 // Report breaks as a status AND as in-band character + // sequence FFh, 01h, 10h +#define CBK_SEQ 0x03 // Report breaks as the in-band + //sequence FFh, 01h, 10h ONLY. +#define CBK_FLSH 0x04 // if this bit set also flush input data +#define CBK_POSIX 0x08 // if this bit set report as FF,0,0 sequence +#define CBK_SINGLE 0x10 // if this bit set with CBK_SEQ or CBK_STAT_SEQ + //then reports single null instead of triple + +#define CMD_BRK_NREP (cmdSyntaxPtr)(ct27) // Disable break reporting + +// Specify maximum block size for received data +// +#define CMD_MAX_BLOCK(arg) \ + (((cmdSyntaxPtr)(ct28))->cmd[1] = (arg),(cmdSyntaxPtr)(ct28)) + +// -- COMMAND 29 is reserved -- + +#define CMD_CTSFL_ENAB (cmdSyntaxPtr)(ct30) // Enable CTS flow control +#define CMD_CTSFL_DSAB (cmdSyntaxPtr)(ct31) // Disable CTS flow control +#define CMD_RTSFL_ENAB (cmdSyntaxPtr)(ct32) // Enable RTS flow control +#define CMD_RTSFL_DSAB (cmdSyntaxPtr)(ct33) // Disable RTS flow control + +// Specify istrip option +// +#define CMD_ISTRIP_OPT(arg) \ + (((cmdSyntaxPtr)(ct34))->cmd[1] = (arg),(cmdSyntaxPtr)(ct34)) + +#define CIS_NOSTRIP 0 // Strip characters to character size +#define CIS_STRIP 1 // Strip any 8-bit characters to 7 bits + +// Send a break of arg milliseconds +// +#define CMD_SEND_BRK(arg) \ + (((cmdSyntaxPtr)(ct35))->cmd[1] = (arg),(cmdSyntaxPtr)(ct35)) + +// Set error reporting mode +// +#define CMD_SET_ERROR(arg) \ + (((cmdSyntaxPtr)(ct36))->cmd[1] = (arg),(cmdSyntaxPtr)(ct36)) + +#define CSE_ESTAT 0 // Report error in a status packet +#define CSE_NOREP 1 // Treat character as though it were good +#define CSE_DROP 2 // Discard the character +#define CSE_NULL 3 // Replace with a null +#define CSE_MARK 4 // Replace with a 3-character sequence (as Unix) + +#define CSE_REPLACE 0x8 // Replace the errored character with the + // replacement character defined here + +#define CSE_STAT_REPLACE 0x18 // Replace the errored character with the + // replacement character defined here AND + // report the error as a status packet (as in + // CSE_ESTAT). + + +// COMMAND 37, to send flow control packets, is handled only by low-level +// library code in response to data movement and shouldn't ever be sent by the +// user code. See i2pack.h and the body of i2lib.c for details. + +// Enable on-board post-processing, using options given in oflag argument. +// Formerly, this command was automatically preceded by a CMD_OPOST_OFF command +// because the loadware does not permit sending back-to-back CMD_OPOST_ON +// commands without an intervening CMD_OPOST_OFF. BUT, WE LEARN 18 MAY 92, that +// CMD_OPOST_ON and CMD_OPOST_OFF must each be at the end of a packet (or in a +// solo packet). This means the caller must specify separately CMD_OPOST_OFF, +// CMD_OPOST_ON(parm) when he calls i2QueueCommands(). That function will ensure +// each gets a separate packet. Extra CMD_OPOST_OFF's are always ok. +// +#define CMD_OPOST_ON(oflag) \ + (*(USHORT *)(((cmdSyntaxPtr)(ct39))->cmd[1]) = (oflag), \ + (cmdSyntaxPtr)(ct39)) + +#define CMD_OPOST_OFF (cmdSyntaxPtr)(ct40) // Disable on-board post-proc + +#define CMD_RESUME (cmdSyntaxPtr)(ct41) // Resume: behave as though an XON + // were received; + +// Set Transmit baud rate (see command 7 for arguments) +// +#define CMD_SETBAUD_TX(arg) \ + (((cmdSyntaxPtr)(ct42))->cmd[1] = (arg),(cmdSyntaxPtr)(ct42)) + +// Set Receive baud rate (see command 7 for arguments) +// +#define CMD_SETBAUD_RX(arg) \ + (((cmdSyntaxPtr)(ct43))->cmd[1] = (arg),(cmdSyntaxPtr)(ct43)) + +// Request interrupt from board each arg milliseconds. Interrupt will specify +// "received data", even though there may be no data present. If arg == 0, +// disables any such interrupts. +// +#define CMD_PING_REQ(arg) \ + (((cmdSyntaxPtr)(ct44))->cmd[1] = (arg),(cmdSyntaxPtr)(ct44)) + +#define CMD_HOT_ENAB (cmdSyntaxPtr)(ct45) // Enable Hot-key checking +#define CMD_HOT_DSAB (cmdSyntaxPtr)(ct46) // Disable Hot-key checking + +#if 0 +// COMMAND 47: Send Protocol info via Unix flags: +// iflag = Unix tty t_iflag +// cflag = Unix tty t_cflag +// lflag = Unix tty t_lflag +// See System V Unix/Xenix documentation for the meanings of the bit fields +// within these flags +// +#define CMD_UNIX_FLAGS(iflag,cflag,lflag) i2cmdUnixFlags(iflag,cflag,lflag) +#endif /* 0 */ + +#define CMD_DSRFL_ENAB (cmdSyntaxPtr)(ct48) // Enable DSR receiver ctrl +#define CMD_DSRFL_DSAB (cmdSyntaxPtr)(ct49) // Disable DSR receiver ctrl +#define CMD_DTRFL_ENAB (cmdSyntaxPtr)(ct50) // Enable DTR flow control +#define CMD_DTRFL_DSAB (cmdSyntaxPtr)(ct51) // Disable DTR flow control +#define CMD_BAUD_RESET (cmdSyntaxPtr)(ct52) // Reset baudrate table + +// COMMAND 54: Define custom rate #1 +// rate = (short) 1/10 of the desired baud rate +// +#define CMD_BAUD_DEF1(rate) i2cmdBaudDef(1,rate) + +// COMMAND 55: Define custom rate #2 +// rate = (short) 1/10 of the desired baud rate +// +#define CMD_BAUD_DEF2(rate) i2cmdBaudDef(2,rate) + +// Pause arg hundredths of seconds. (Note, this is NOT milliseconds.) +// +#define CMD_PAUSE(arg) \ + (((cmdSyntaxPtr)(ct56))->cmd[1] = (arg),(cmdSyntaxPtr)(ct56)) + +#define CMD_SUSPEND (cmdSyntaxPtr)(ct57) // Suspend output +#define CMD_UNSUSPEND (cmdSyntaxPtr)(ct58) // Un-Suspend output + +// Set parity-checking options +// +#define CMD_PARCHK(arg) \ + (((cmdSyntaxPtr)(ct59))->cmd[1] = (arg),(cmdSyntaxPtr)(ct59)) + +#define CPK_ENAB 0 // Enable parity checking on input +#define CPK_DSAB 1 // Disable parity checking on input + +#define CMD_BMARK_REQ (cmdSyntaxPtr)(ct60) // Bookmark request + + +// Enable/Disable internal loopback mode +// +#define CMD_INLOOP(arg) \ + (((cmdSyntaxPtr)(ct61))->cmd[1] = (arg),(cmdSyntaxPtr)(ct61)) + +#define CIN_DISABLE 0 // Normal operation (default) +#define CIN_ENABLE 1 // Internal (local) loopback +#define CIN_REMOTE 2 // Remote loopback + +// Specify timeout for hotkeys: Delay will be (arg x 10) milliseconds, arg == 0 +// --> no timeout: wait forever. +// +#define CMD_HOT_TIME(arg) \ + (((cmdSyntaxPtr)(ct62))->cmd[1] = (arg),(cmdSyntaxPtr)(ct62)) + + +// Define (outgoing) xon for receive flow control +// +#define CMD_DEF_OXON(arg) \ + (((cmdSyntaxPtr)(ct63))->cmd[1] = (arg),(cmdSyntaxPtr)(ct63)) + +// Define (outgoing) xoff for receiver flow control +// +#define CMD_DEF_OXOFF(arg) \ + (((cmdSyntaxPtr)(ct64))->cmd[1] = (arg),(cmdSyntaxPtr)(ct64)) + +// Enable/Disable RTS on transmit (1/2 duplex-style) +// +#define CMD_RTS_XMIT(arg) \ + (((cmdSyntaxPtr)(ct65))->cmd[1] = (arg),(cmdSyntaxPtr)(ct65)) + +#define CHD_DISABLE 0 +#define CHD_ENABLE 1 + +// Set high-water-mark level (debugging use only) +// +#define CMD_SETHIGHWAT(arg) \ + (((cmdSyntaxPtr)(ct66))->cmd[1] = (arg),(cmdSyntaxPtr)(ct66)) + +// Start flushing tagged data (tag = 0-14) +// +#define CMD_START_SELFL(tag) \ + (((cmdSyntaxPtr)(ct67))->cmd[1] = (tag),(cmdSyntaxPtr)(ct67)) + +// End flushing tagged data (tag = 0-14) +// +#define CMD_END_SELFL(tag) \ + (((cmdSyntaxPtr)(ct68))->cmd[1] = (tag),(cmdSyntaxPtr)(ct68)) + +#define CMD_HWFLOW_OFF (cmdSyntaxPtr)(ct69) // Disable HW TX flow control +#define CMD_ODSRFL_ENAB (cmdSyntaxPtr)(ct70) // Enable DSR output f/c +#define CMD_ODSRFL_DSAB (cmdSyntaxPtr)(ct71) // Disable DSR output f/c +#define CMD_ODCDFL_ENAB (cmdSyntaxPtr)(ct72) // Enable DCD output f/c +#define CMD_ODCDFL_DSAB (cmdSyntaxPtr)(ct73) // Disable DCD output f/c + +// Set transmit interrupt load level. Count should be an even value 2-12 +// +#define CMD_LOADLEVEL(count) \ + (((cmdSyntaxPtr)(ct74))->cmd[1] = (count),(cmdSyntaxPtr)(ct74)) + +// If reporting DSS changes, map to character sequence FFh, 2, MSR +// +#define CMD_STATDATA(arg) \ + (((cmdSyntaxPtr)(ct75))->cmd[1] = (arg),(cmdSyntaxPtr)(ct75)) + +#define CSTD_DISABLE// Report DSS changes as status packets only (default) +#define CSTD_ENABLE // Report DSS changes as in-band data sequence as well as + // by status packet. + +#define CMD_BREAK_ON (cmdSyntaxPtr)(ct76)// Set break and stop xmit +#define CMD_BREAK_OFF (cmdSyntaxPtr)(ct77)// End break and restart xmit +#define CMD_GETFC (cmdSyntaxPtr)(ct78)// Request for flow control packet + // from board. + +// Transmit this character immediately +// +#define CMD_XMIT_NOW(ch) \ + (((cmdSyntaxPtr)(ct79))->cmd[1] = (ch),(cmdSyntaxPtr)(ct79)) + +// Set baud rate via "divisor latch" +// +#define CMD_DIVISOR_LATCH(which,value) \ + (((cmdSyntaxPtr)(ct80))->cmd[1] = (which), \ + *(USHORT *)(((cmdSyntaxPtr)(ct80))->cmd[2]) = (value), \ + (cmdSyntaxPtr)(ct80)) + +#define CDL_RX 1 // Set receiver rate +#define CDL_TX 2 // Set transmit rate + // (CDL_TX | CDL_RX) Set both rates + +// Request for special diagnostic status pkt from the board. +// +#define CMD_GET_STATUS (cmdSyntaxPtr)(ct81) + +// Request time-stamped transmit character count packet. +// +#define CMD_GET_TXCNT (cmdSyntaxPtr)(ct82) + +// Request time-stamped receive character count packet. +// +#define CMD_GET_RXCNT (cmdSyntaxPtr)(ct83) + +// Request for box/board I.D. packet. +#define CMD_GET_BOXIDS (cmdSyntaxPtr)(ct84) + +// Enable or disable multiple channels according to bit-mapped ushorts box 1-4 +// +#define CMD_ENAB_MULT(enable, box1, box2, box3, box4) \ + (((cmdSytaxPtr)(ct85))->cmd[1] = (enable), \ + *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[2]) = (box1), \ + *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[4]) = (box2), \ + *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[6]) = (box3), \ + *(USHORT *)(((cmdSyntaxPtr)(ct85))->cmd[8]) = (box4), \ + (cmdSyntaxPtr)(ct85)) + +#define CEM_DISABLE 0 +#define CEM_ENABLE 1 + +// Enable or disable receiver or receiver interrupts (default both enabled) +// +#define CMD_RCV_ENABLE(ch) \ + (((cmdSyntaxPtr)(ct86))->cmd[1] = (ch),(cmdSyntaxPtr)(ct86)) + +#define CRE_OFF 0 // Disable the receiver +#define CRE_ON 1 // Enable the receiver +#define CRE_INTOFF 2 // Disable receiver interrupts (to loadware) +#define CRE_INTON 3 // Enable receiver interrupts (to loadware) + +// Starts up a hardware test process, which runs transparently, and sends a +// STAT_HWFAIL packet in case a hardware failure is detected. +// +#define CMD_HW_TEST (cmdSyntaxPtr)(ct87) + +// Change receiver threshold and timeout value: +// Defaults: timeout = 20mS +// threshold count = 8 when DTRflow not in use, +// threshold count = 5 when DTRflow in use. +// +#define CMD_RCV_THRESHOLD(count,ms) \ + (((cmdSyntaxPtr)(ct88))->cmd[1] = (count), \ + ((cmdSyntaxPtr)(ct88))->cmd[2] = (ms), \ + (cmdSyntaxPtr)(ct88)) + +// Makes the loadware report DSS signals for this channel immediately. +// +#define CMD_DSS_NOW (cmdSyntaxPtr)(ct89) + +// Set the receive silo parameters +// timeout is ms idle wait until delivery (~VTIME) +// threshold is max characters cause interrupt (~VMIN) +// +#define CMD_SET_SILO(timeout,threshold) \ + (((cmdSyntaxPtr)(ct90))->cmd[1] = (timeout), \ + ((cmdSyntaxPtr)(ct90))->cmd[2] = (threshold), \ + (cmdSyntaxPtr)(ct90)) + +// Set timed break in decisecond (1/10s) +// +#define CMD_LBREAK(ds) \ + (((cmdSyntaxPtr)(ct91))->cmd[1] = (ds),(cmdSyntaxPtr)(ct66)) + + + +#endif // I2CMD_H diff --git a/drivers/staging/tty/ip2/i2ellis.c b/drivers/staging/tty/ip2/i2ellis.c new file mode 100644 index 000000000000..29db44de399f --- /dev/null +++ b/drivers/staging/tty/ip2/i2ellis.c @@ -0,0 +1,1403 @@ +/******************************************************************************* +* +* (c) 1998 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Low-level interface code for the device driver +* (This is included source code, not a separate compilation +* module.) +* +*******************************************************************************/ +//--------------------------------------------- +// Function declarations private to this module +//--------------------------------------------- +// Functions called only indirectly through i2eBordStr entries. + +static int iiWriteBuf16(i2eBordStrPtr, unsigned char *, int); +static int iiWriteBuf8(i2eBordStrPtr, unsigned char *, int); +static int iiReadBuf16(i2eBordStrPtr, unsigned char *, int); +static int iiReadBuf8(i2eBordStrPtr, unsigned char *, int); + +static unsigned short iiReadWord16(i2eBordStrPtr); +static unsigned short iiReadWord8(i2eBordStrPtr); +static void iiWriteWord16(i2eBordStrPtr, unsigned short); +static void iiWriteWord8(i2eBordStrPtr, unsigned short); + +static int iiWaitForTxEmptyII(i2eBordStrPtr, int); +static int iiWaitForTxEmptyIIEX(i2eBordStrPtr, int); +static int iiTxMailEmptyII(i2eBordStrPtr); +static int iiTxMailEmptyIIEX(i2eBordStrPtr); +static int iiTrySendMailII(i2eBordStrPtr, unsigned char); +static int iiTrySendMailIIEX(i2eBordStrPtr, unsigned char); + +static unsigned short iiGetMailII(i2eBordStrPtr); +static unsigned short iiGetMailIIEX(i2eBordStrPtr); + +static void iiEnableMailIrqII(i2eBordStrPtr); +static void iiEnableMailIrqIIEX(i2eBordStrPtr); +static void iiWriteMaskII(i2eBordStrPtr, unsigned char); +static void iiWriteMaskIIEX(i2eBordStrPtr, unsigned char); + +static void ii2Nop(void); + +//*************** +//* Static Data * +//*************** + +static int ii2Safe; // Safe I/O address for delay routine + +static int iiDelayed; // Set when the iiResetDelay function is + // called. Cleared when ANY board is reset. +static DEFINE_RWLOCK(Dl_spinlock); + +//******** +//* Code * +//******** + +//======================================================= +// Initialization Routines +// +// iiSetAddress +// iiReset +// iiResetDelay +// iiInitialize +//======================================================= + +//****************************************************************************** +// Function: iiSetAddress(pB, address, delay) +// Parameters: pB - pointer to the board structure +// address - the purported I/O address of the board +// delay - pointer to the 1-ms delay function to use +// in this and any future operations to this board +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// This routine (roughly) checks for address validity, sets the i2eValid OK and +// sets the state to II_STATE_COLD which means that we haven't even sent a reset +// yet. +// +//****************************************************************************** +static int +iiSetAddress( i2eBordStrPtr pB, int address, delayFunc_t delay ) +{ + // Should any failure occur before init is finished... + pB->i2eValid = I2E_INCOMPLETE; + + // Cannot check upper limit except extremely: Might be microchannel + // Address must be on an 8-byte boundary + + if ((unsigned int)address <= 0x100 + || (unsigned int)address >= 0xfff8 + || (address & 0x7) + ) + { + I2_COMPLETE(pB, I2EE_BADADDR); + } + + // Initialize accelerators + pB->i2eBase = address; + pB->i2eData = address + FIFO_DATA; + pB->i2eStatus = address + FIFO_STATUS; + pB->i2ePointer = address + FIFO_PTR; + pB->i2eXMail = address + FIFO_MAIL; + pB->i2eXMask = address + FIFO_MASK; + + // Initialize i/o address for ii2DelayIO + ii2Safe = address + FIFO_NOP; + + // Initialize the delay routine + pB->i2eDelay = ((delay != (delayFunc_t)NULL) ? delay : (delayFunc_t)ii2Nop); + + pB->i2eValid = I2E_MAGIC; + pB->i2eState = II_STATE_COLD; + + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: iiReset(pB) +// Parameters: pB - pointer to the board structure +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Attempts to reset the board (see also i2hw.h). Normally, we would use this to +// reset a board immediately after iiSetAddress(), but it is valid to reset a +// board from any state, say, in order to change or re-load loadware. (Under +// such circumstances, no reason to re-run iiSetAddress(), which is why it is a +// separate routine and not included in this routine. +// +//****************************************************************************** +static int +iiReset(i2eBordStrPtr pB) +{ + // Magic number should be set, else even the address is suspect + if (pB->i2eValid != I2E_MAGIC) + { + I2_COMPLETE(pB, I2EE_BADMAGIC); + } + + outb(0, pB->i2eBase + FIFO_RESET); /* Any data will do */ + iiDelay(pB, 50); // Pause between resets + outb(0, pB->i2eBase + FIFO_RESET); /* Second reset */ + + // We must wait before even attempting to read anything from the FIFO: the + // board's P.O.S.T may actually attempt to read and write its end of the + // FIFO in order to check flags, loop back (where supported), etc. On + // completion of this testing it would reset the FIFO, and on completion + // of all // P.O.S.T., write the message. We must not mistake data which + // might have been sent for testing as part of the reset message. To + // better utilize time, say, when resetting several boards, we allow the + // delay to be performed externally; in this way the caller can reset + // several boards, delay a single time, then call the initialization + // routine for all. + + pB->i2eState = II_STATE_RESET; + + iiDelayed = 0; // i.e., the delay routine hasn't been called since the most + // recent reset. + + // Ensure anything which would have been of use to standard loadware is + // blanked out, since board has now forgotten everything!. + + pB->i2eUsingIrq = I2_IRQ_UNDEFINED; /* to not use an interrupt so far */ + pB->i2eWaitingForEmptyFifo = 0; + pB->i2eOutMailWaiting = 0; + pB->i2eChannelPtr = NULL; + pB->i2eChannelCnt = 0; + + pB->i2eLeadoffWord[0] = 0; + pB->i2eFifoInInts = 0; + pB->i2eFifoOutInts = 0; + pB->i2eFatalTrap = NULL; + pB->i2eFatal = 0; + + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: iiResetDelay(pB) +// Parameters: pB - pointer to the board structure +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Using the delay defined in board structure, waits two seconds (for board to +// reset). +// +//****************************************************************************** +static int +iiResetDelay(i2eBordStrPtr pB) +{ + if (pB->i2eValid != I2E_MAGIC) { + I2_COMPLETE(pB, I2EE_BADMAGIC); + } + if (pB->i2eState != II_STATE_RESET) { + I2_COMPLETE(pB, I2EE_BADSTATE); + } + iiDelay(pB,2000); /* Now we wait for two seconds. */ + iiDelayed = 1; /* Delay has been called: ok to initialize */ + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: iiInitialize(pB) +// Parameters: pB - pointer to the board structure +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Attempts to read the Power-on reset message. Initializes any remaining fields +// in the pB structure. +// +// This should be called as the third step of a process beginning with +// iiReset(), then iiResetDelay(). This routine checks to see that the structure +// is "valid" and in the reset state, also confirms that the delay routine has +// been called since the latest reset (to any board! overly strong!). +// +//****************************************************************************** +static int +iiInitialize(i2eBordStrPtr pB) +{ + int itemp; + unsigned char c; + unsigned short utemp; + unsigned int ilimit; + + if (pB->i2eValid != I2E_MAGIC) + { + I2_COMPLETE(pB, I2EE_BADMAGIC); + } + + if (pB->i2eState != II_STATE_RESET || !iiDelayed) + { + I2_COMPLETE(pB, I2EE_BADSTATE); + } + + // In case there is a failure short of our completely reading the power-up + // message. + pB->i2eValid = I2E_INCOMPLETE; + + + // Now attempt to read the message. + + for (itemp = 0; itemp < sizeof(porStr); itemp++) + { + // We expect the entire message is ready. + if (!I2_HAS_INPUT(pB)) { + pB->i2ePomSize = itemp; + I2_COMPLETE(pB, I2EE_PORM_SHORT); + } + + pB->i2ePom.c[itemp] = c = inb(pB->i2eData); + + // We check the magic numbers as soon as they are supposed to be read + // (rather than after) to minimize effect of reading something we + // already suspect can't be "us". + if ( (itemp == POR_1_INDEX && c != POR_MAGIC_1) || + (itemp == POR_2_INDEX && c != POR_MAGIC_2)) + { + pB->i2ePomSize = itemp+1; + I2_COMPLETE(pB, I2EE_BADMAGIC); + } + } + + pB->i2ePomSize = itemp; + + // Ensure that this was all the data... + if (I2_HAS_INPUT(pB)) + I2_COMPLETE(pB, I2EE_PORM_LONG); + + // For now, we'll fail to initialize if P.O.S.T reports bad chip mapper: + // Implying we will not be able to download any code either: That's ok: the + // condition is pretty explicit. + if (pB->i2ePom.e.porDiag1 & POR_BAD_MAPPER) + { + I2_COMPLETE(pB, I2EE_POSTERR); + } + + // Determine anything which must be done differently depending on the family + // of boards! + switch (pB->i2ePom.e.porID & POR_ID_FAMILY) + { + case POR_ID_FII: // IntelliPort-II + + pB->i2eFifoStyle = FIFO_II; + pB->i2eFifoSize = 512; // 512 bytes, always + pB->i2eDataWidth16 = false; + + pB->i2eMaxIrq = 15; // Because board cannot tell us it is in an 8-bit + // slot, we do allow it to be done (documentation!) + + pB->i2eGoodMap[1] = + pB->i2eGoodMap[2] = + pB->i2eGoodMap[3] = + pB->i2eChannelMap[1] = + pB->i2eChannelMap[2] = + pB->i2eChannelMap[3] = 0; + + switch (pB->i2ePom.e.porID & POR_ID_SIZE) + { + case POR_ID_II_4: + pB->i2eGoodMap[0] = + pB->i2eChannelMap[0] = 0x0f; // four-port + + // Since porPorts1 is based on the Hardware ID register, the numbers + // should always be consistent for IntelliPort-II. Ditto below... + if (pB->i2ePom.e.porPorts1 != 4) + { + I2_COMPLETE(pB, I2EE_INCONSIST); + } + break; + + case POR_ID_II_8: + case POR_ID_II_8R: + pB->i2eGoodMap[0] = + pB->i2eChannelMap[0] = 0xff; // Eight port + if (pB->i2ePom.e.porPorts1 != 8) + { + I2_COMPLETE(pB, I2EE_INCONSIST); + } + break; + + case POR_ID_II_6: + pB->i2eGoodMap[0] = + pB->i2eChannelMap[0] = 0x3f; // Six Port + if (pB->i2ePom.e.porPorts1 != 6) + { + I2_COMPLETE(pB, I2EE_INCONSIST); + } + break; + } + + // Fix up the "good channel list based on any errors reported. + if (pB->i2ePom.e.porDiag1 & POR_BAD_UART1) + { + pB->i2eGoodMap[0] &= ~0x0f; + } + + if (pB->i2ePom.e.porDiag1 & POR_BAD_UART2) + { + pB->i2eGoodMap[0] &= ~0xf0; + } + + break; // POR_ID_FII case + + case POR_ID_FIIEX: // IntelliPort-IIEX + + pB->i2eFifoStyle = FIFO_IIEX; + + itemp = pB->i2ePom.e.porFifoSize; + + // Implicit assumption that fifo would not grow beyond 32k, + // nor would ever be less than 256. + + if (itemp < 8 || itemp > 15) + { + I2_COMPLETE(pB, I2EE_INCONSIST); + } + pB->i2eFifoSize = (1 << itemp); + + // These are based on what P.O.S.T thinks should be there, based on + // box ID registers + ilimit = pB->i2ePom.e.porNumBoxes; + if (ilimit > ABS_MAX_BOXES) + { + ilimit = ABS_MAX_BOXES; + } + + // For as many boxes as EXIST, gives the type of box. + // Added 8/6/93: check for the ISA-4 (asic) which looks like an + // expandable but for whom "8 or 16?" is not the right question. + + utemp = pB->i2ePom.e.porFlags; + if (utemp & POR_CEX4) + { + pB->i2eChannelMap[0] = 0x000f; + } else { + utemp &= POR_BOXES; + for (itemp = 0; itemp < ilimit; itemp++) + { + pB->i2eChannelMap[itemp] = + ((utemp & POR_BOX_16) ? 0xffff : 0x00ff); + utemp >>= 1; + } + } + + // These are based on what P.O.S.T actually found. + + utemp = (pB->i2ePom.e.porPorts2 << 8) + pB->i2ePom.e.porPorts1; + + for (itemp = 0; itemp < ilimit; itemp++) + { + pB->i2eGoodMap[itemp] = 0; + if (utemp & 1) pB->i2eGoodMap[itemp] |= 0x000f; + if (utemp & 2) pB->i2eGoodMap[itemp] |= 0x00f0; + if (utemp & 4) pB->i2eGoodMap[itemp] |= 0x0f00; + if (utemp & 8) pB->i2eGoodMap[itemp] |= 0xf000; + utemp >>= 4; + } + + // Now determine whether we should transfer in 8 or 16-bit mode. + switch (pB->i2ePom.e.porBus & (POR_BUS_SLOT16 | POR_BUS_DIP16) ) + { + case POR_BUS_SLOT16 | POR_BUS_DIP16: + pB->i2eDataWidth16 = true; + pB->i2eMaxIrq = 15; + break; + + case POR_BUS_SLOT16: + pB->i2eDataWidth16 = false; + pB->i2eMaxIrq = 15; + break; + + case 0: + case POR_BUS_DIP16: // In an 8-bit slot, DIP switch don't care. + default: + pB->i2eDataWidth16 = false; + pB->i2eMaxIrq = 7; + break; + } + break; // POR_ID_FIIEX case + + default: // Unknown type of board + I2_COMPLETE(pB, I2EE_BAD_FAMILY); + break; + } // End the switch based on family + + // Temporarily, claim there is no room in the outbound fifo. + // We will maintain this whenever we check for an empty outbound FIFO. + pB->i2eFifoRemains = 0; + + // Now, based on the bus type, should we expect to be able to re-configure + // interrupts (say, for testing purposes). + switch (pB->i2ePom.e.porBus & POR_BUS_TYPE) + { + case POR_BUS_T_ISA: + case POR_BUS_T_UNK: // If the type of bus is undeclared, assume ok. + case POR_BUS_T_MCA: + case POR_BUS_T_EISA: + break; + default: + I2_COMPLETE(pB, I2EE_BADBUS); + } + + if (pB->i2eDataWidth16) + { + pB->i2eWriteBuf = iiWriteBuf16; + pB->i2eReadBuf = iiReadBuf16; + pB->i2eWriteWord = iiWriteWord16; + pB->i2eReadWord = iiReadWord16; + } else { + pB->i2eWriteBuf = iiWriteBuf8; + pB->i2eReadBuf = iiReadBuf8; + pB->i2eWriteWord = iiWriteWord8; + pB->i2eReadWord = iiReadWord8; + } + + switch(pB->i2eFifoStyle) + { + case FIFO_II: + pB->i2eWaitForTxEmpty = iiWaitForTxEmptyII; + pB->i2eTxMailEmpty = iiTxMailEmptyII; + pB->i2eTrySendMail = iiTrySendMailII; + pB->i2eGetMail = iiGetMailII; + pB->i2eEnableMailIrq = iiEnableMailIrqII; + pB->i2eWriteMask = iiWriteMaskII; + + break; + + case FIFO_IIEX: + pB->i2eWaitForTxEmpty = iiWaitForTxEmptyIIEX; + pB->i2eTxMailEmpty = iiTxMailEmptyIIEX; + pB->i2eTrySendMail = iiTrySendMailIIEX; + pB->i2eGetMail = iiGetMailIIEX; + pB->i2eEnableMailIrq = iiEnableMailIrqIIEX; + pB->i2eWriteMask = iiWriteMaskIIEX; + + break; + + default: + I2_COMPLETE(pB, I2EE_INCONSIST); + } + + // Initialize state information. + pB->i2eState = II_STATE_READY; // Ready to load loadware. + + // Some Final cleanup: + // For some boards, the bootstrap firmware may perform some sort of test + // resulting in a stray character pending in the incoming mailbox. If one is + // there, it should be read and discarded, especially since for the standard + // firmware, it's the mailbox that interrupts the host. + + pB->i2eStartMail = iiGetMail(pB); + + // Throw it away and clear the mailbox structure element + pB->i2eStartMail = NO_MAIL_HERE; + + // Everything is ok now, return with good status/ + + pB->i2eValid = I2E_MAGIC; + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: ii2DelayTimer(mseconds) +// Parameters: mseconds - number of milliseconds to delay +// +// Returns: Nothing +// +// Description: +// +// This routine delays for approximately mseconds milliseconds and is intended +// to be called indirectly through i2Delay field in i2eBordStr. It uses the +// Linux timer_list mechanism. +// +// The Linux timers use a unit called "jiffies" which are 10mS in the Intel +// architecture. This function rounds the delay period up to the next "jiffy". +// In the Alpha architecture the "jiffy" is 1mS, but this driver is not intended +// for Alpha platforms at this time. +// +//****************************************************************************** +static void +ii2DelayTimer(unsigned int mseconds) +{ + msleep_interruptible(mseconds); +} + +#if 0 +//static void ii2DelayIO(unsigned int); +//****************************************************************************** +// !!! Not Used, this is DOS crap, some of you young folks may be interested in +// in how things were done in the stone age of caculating machines !!! +// Function: ii2DelayIO(mseconds) +// Parameters: mseconds - number of milliseconds to delay +// +// Returns: Nothing +// +// Description: +// +// This routine delays for approximately mseconds milliseconds and is intended +// to be called indirectly through i2Delay field in i2eBordStr. It is intended +// for use where a clock-based function is impossible: for example, DOS drivers. +// +// This function uses the IN instruction to place bounds on the timing and +// assumes that ii2Safe has been set. This is because I/O instructions are not +// subject to caching and will therefore take a certain minimum time. To ensure +// the delay is at least long enough on fast machines, it is based on some +// fastest-case calculations. On slower machines this may cause VERY long +// delays. (3 x fastest case). In the fastest case, everything is cached except +// the I/O instruction itself. +// +// Timing calculations: +// The fastest bus speed for I/O operations is likely to be 10 MHz. The I/O +// operation in question is a byte operation to an odd address. For 8-bit +// operations, the architecture generally enforces two wait states. At 10 MHz, a +// single cycle time is 100nS. A read operation at two wait states takes 6 +// cycles for a total time of 600nS. Therefore approximately 1666 iterations +// would be required to generate a single millisecond delay. The worst +// (reasonable) case would be an 8MHz system with no cacheing. In this case, the +// I/O instruction would take 125nS x 6 cyles = 750 nS. More importantly, code +// fetch of other instructions in the loop would take time (zero wait states, +// however) and would be hard to estimate. This is minimized by using in-line +// assembler for the in inner loop of IN instructions. This consists of just a +// few bytes. So we'll guess about four code fetches per loop. Each code fetch +// should take four cycles, so we have 125nS * 8 = 1000nS. Worst case then is +// that what should have taken 1 mS takes instead 1666 * (1750) = 2.9 mS. +// +// So much for theoretical timings: results using 1666 value on some actual +// machines: +// IBM 286 6MHz 3.15 mS +// Zenith 386 33MHz 2.45 mS +// (brandX) 386 33MHz 1.90 mS (has cache) +// (brandY) 486 33MHz 2.35 mS +// NCR 486 ?? 1.65 mS (microchannel) +// +// For most machines, it is probably safe to scale this number back (remember, +// for robust operation use an actual timed delay if possible), so we are using +// a value of 1190. This yields 1.17 mS for the fastest machine in our sample, +// 1.75 mS for typical 386 machines, and 2.25 mS the absolute slowest machine. +// +// 1/29/93: +// The above timings are too slow. Actual cycle times might be faster. ISA cycle +// times could approach 500 nS, and ... +// The IBM model 77 being microchannel has no wait states for 8-bit reads and +// seems to be accessing the I/O at 440 nS per access (from start of one to +// start of next). This would imply we need 1000/.440 = 2272 iterations to +// guarantee we are fast enough. In actual testing, we see that 2 * 1190 are in +// fact enough. For diagnostics, we keep the level at 1190, but developers note +// this needs tuning. +// +// Safe assumption: 2270 i/o reads = 1 millisecond +// +//****************************************************************************** + + +static int ii2DelValue = 1190; // See timing calculations below + // 1666 for fastest theoretical machine + // 1190 safe for most fast 386 machines + // 1000 for fastest machine tested here + // 540 (sic) for AT286/6Mhz +static void +ii2DelayIO(unsigned int mseconds) +{ + if (!ii2Safe) + return; /* Do nothing if this variable uninitialized */ + + while(mseconds--) { + int i = ii2DelValue; + while ( i-- ) { + inb(ii2Safe); + } + } +} +#endif + +//****************************************************************************** +// Function: ii2Nop() +// Parameters: None +// +// Returns: Nothing +// +// Description: +// +// iiInitialize will set i2eDelay to this if the delay parameter is NULL. This +// saves checking for a NULL pointer at every call. +//****************************************************************************** +static void +ii2Nop(void) +{ + return; // no mystery here +} + +//======================================================= +// Routines which are available in 8/16-bit versions, or +// in different fifo styles. These are ALL called +// indirectly through the board structure. +//======================================================= + +//****************************************************************************** +// Function: iiWriteBuf16(pB, address, count) +// Parameters: pB - pointer to board structure +// address - address of data to write +// count - number of data bytes to write +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Writes 'count' bytes from 'address' to the data fifo specified by the board +// structure pointer pB. Should count happen to be odd, an extra pad byte is +// sent (identity unknown...). Uses 16-bit (word) operations. Is called +// indirectly through pB->i2eWriteBuf. +// +//****************************************************************************** +static int +iiWriteBuf16(i2eBordStrPtr pB, unsigned char *address, int count) +{ + // Rudimentary sanity checking here. + if (pB->i2eValid != I2E_MAGIC) + I2_COMPLETE(pB, I2EE_INVALID); + + I2_OUTSW(pB->i2eData, address, count); + + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: iiWriteBuf8(pB, address, count) +// Parameters: pB - pointer to board structure +// address - address of data to write +// count - number of data bytes to write +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Writes 'count' bytes from 'address' to the data fifo specified by the board +// structure pointer pB. Should count happen to be odd, an extra pad byte is +// sent (identity unknown...). This is to be consistent with the 16-bit version. +// Uses 8-bit (byte) operations. Is called indirectly through pB->i2eWriteBuf. +// +//****************************************************************************** +static int +iiWriteBuf8(i2eBordStrPtr pB, unsigned char *address, int count) +{ + /* Rudimentary sanity checking here */ + if (pB->i2eValid != I2E_MAGIC) + I2_COMPLETE(pB, I2EE_INVALID); + + I2_OUTSB(pB->i2eData, address, count); + + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: iiReadBuf16(pB, address, count) +// Parameters: pB - pointer to board structure +// address - address to put data read +// count - number of data bytes to read +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Reads 'count' bytes into 'address' from the data fifo specified by the board +// structure pointer pB. Should count happen to be odd, an extra pad byte is +// received (identity unknown...). Uses 16-bit (word) operations. Is called +// indirectly through pB->i2eReadBuf. +// +//****************************************************************************** +static int +iiReadBuf16(i2eBordStrPtr pB, unsigned char *address, int count) +{ + // Rudimentary sanity checking here. + if (pB->i2eValid != I2E_MAGIC) + I2_COMPLETE(pB, I2EE_INVALID); + + I2_INSW(pB->i2eData, address, count); + + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: iiReadBuf8(pB, address, count) +// Parameters: pB - pointer to board structure +// address - address to put data read +// count - number of data bytes to read +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Reads 'count' bytes into 'address' from the data fifo specified by the board +// structure pointer pB. Should count happen to be odd, an extra pad byte is +// received (identity unknown...). This to match the 16-bit behaviour. Uses +// 8-bit (byte) operations. Is called indirectly through pB->i2eReadBuf. +// +//****************************************************************************** +static int +iiReadBuf8(i2eBordStrPtr pB, unsigned char *address, int count) +{ + // Rudimentary sanity checking here. + if (pB->i2eValid != I2E_MAGIC) + I2_COMPLETE(pB, I2EE_INVALID); + + I2_INSB(pB->i2eData, address, count); + + I2_COMPLETE(pB, I2EE_GOOD); +} + +//****************************************************************************** +// Function: iiReadWord16(pB) +// Parameters: pB - pointer to board structure +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Returns the word read from the data fifo specified by the board-structure +// pointer pB. Uses a 16-bit operation. Is called indirectly through +// pB->i2eReadWord. +// +//****************************************************************************** +static unsigned short +iiReadWord16(i2eBordStrPtr pB) +{ + return inw(pB->i2eData); +} + +//****************************************************************************** +// Function: iiReadWord8(pB) +// Parameters: pB - pointer to board structure +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Returns the word read from the data fifo specified by the board-structure +// pointer pB. Uses two 8-bit operations. Bytes are assumed to be LSB first. Is +// called indirectly through pB->i2eReadWord. +// +//****************************************************************************** +static unsigned short +iiReadWord8(i2eBordStrPtr pB) +{ + unsigned short urs; + + urs = inb(pB->i2eData); + + return (inb(pB->i2eData) << 8) | urs; +} + +//****************************************************************************** +// Function: iiWriteWord16(pB, value) +// Parameters: pB - pointer to board structure +// value - data to write +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Writes the word 'value' to the data fifo specified by the board-structure +// pointer pB. Uses 16-bit operation. Is called indirectly through +// pB->i2eWriteWord. +// +//****************************************************************************** +static void +iiWriteWord16(i2eBordStrPtr pB, unsigned short value) +{ + outw((int)value, pB->i2eData); +} + +//****************************************************************************** +// Function: iiWriteWord8(pB, value) +// Parameters: pB - pointer to board structure +// value - data to write +// +// Returns: True if everything appears copacetic. +// False if there is any error: the pB->i2eError field has the error +// +// Description: +// +// Writes the word 'value' to the data fifo specified by the board-structure +// pointer pB. Uses two 8-bit operations (writes LSB first). Is called +// indirectly through pB->i2eWriteWord. +// +//****************************************************************************** +static void +iiWriteWord8(i2eBordStrPtr pB, unsigned short value) +{ + outb((char)value, pB->i2eData); + outb((char)(value >> 8), pB->i2eData); +} + +//****************************************************************************** +// Function: iiWaitForTxEmptyII(pB, mSdelay) +// Parameters: pB - pointer to board structure +// mSdelay - period to wait before returning +// +// Returns: True if the FIFO is empty. +// False if it not empty in the required time: the pB->i2eError +// field has the error. +// +// Description: +// +// Waits up to "mSdelay" milliseconds for the outgoing FIFO to become empty; if +// not empty by the required time, returns false and error in pB->i2eError, +// otherwise returns true. +// +// mSdelay == 0 is taken to mean must be empty on the first test. +// +// This version operates on IntelliPort-II - style FIFO's +// +// Note this routine is organized so that if status is ok there is no delay at +// all called either before or after the test. Is called indirectly through +// pB->i2eWaitForTxEmpty. +// +//****************************************************************************** +static int +iiWaitForTxEmptyII(i2eBordStrPtr pB, int mSdelay) +{ + unsigned long flags; + int itemp; + + for (;;) + { + // This routine hinges on being able to see the "other" status register + // (as seen by the local processor). His incoming fifo is our outgoing + // FIFO. + // + // By the nature of this routine, you would be using this as part of a + // larger atomic context: i.e., you would use this routine to ensure the + // fifo empty, then act on this information. Between these two halves, + // you will generally not want to service interrupts or in any way + // disrupt the assumptions implicit in the larger context. + // + // Even worse, however, this routine "shifts" the status register to + // point to the local status register which is not the usual situation. + // Therefore for extra safety, we force the critical section to be + // completely atomic, and pick up after ourselves before allowing any + // interrupts of any kind. + + + write_lock_irqsave(&Dl_spinlock, flags); + outb(SEL_COMMAND, pB->i2ePointer); + outb(SEL_CMD_SH, pB->i2ePointer); + + itemp = inb(pB->i2eStatus); + + outb(SEL_COMMAND, pB->i2ePointer); + outb(SEL_CMD_UNSH, pB->i2ePointer); + + if (itemp & ST_IN_EMPTY) + { + I2_UPDATE_FIFO_ROOM(pB); + write_unlock_irqrestore(&Dl_spinlock, flags); + I2_COMPLETE(pB, I2EE_GOOD); + } + + write_unlock_irqrestore(&Dl_spinlock, flags); + + if (mSdelay-- == 0) + break; + + iiDelay(pB, 1); /* 1 mS granularity on checking condition */ + } + I2_COMPLETE(pB, I2EE_TXE_TIME); +} + +//****************************************************************************** +// Function: iiWaitForTxEmptyIIEX(pB, mSdelay) +// Parameters: pB - pointer to board structure +// mSdelay - period to wait before returning +// +// Returns: True if the FIFO is empty. +// False if it not empty in the required time: the pB->i2eError +// field has the error. +// +// Description: +// +// Waits up to "mSdelay" milliseconds for the outgoing FIFO to become empty; if +// not empty by the required time, returns false and error in pB->i2eError, +// otherwise returns true. +// +// mSdelay == 0 is taken to mean must be empty on the first test. +// +// This version operates on IntelliPort-IIEX - style FIFO's +// +// Note this routine is organized so that if status is ok there is no delay at +// all called either before or after the test. Is called indirectly through +// pB->i2eWaitForTxEmpty. +// +//****************************************************************************** +static int +iiWaitForTxEmptyIIEX(i2eBordStrPtr pB, int mSdelay) +{ + unsigned long flags; + + for (;;) + { + // By the nature of this routine, you would be using this as part of a + // larger atomic context: i.e., you would use this routine to ensure the + // fifo empty, then act on this information. Between these two halves, + // you will generally not want to service interrupts or in any way + // disrupt the assumptions implicit in the larger context. + + write_lock_irqsave(&Dl_spinlock, flags); + + if (inb(pB->i2eStatus) & STE_OUT_MT) { + I2_UPDATE_FIFO_ROOM(pB); + write_unlock_irqrestore(&Dl_spinlock, flags); + I2_COMPLETE(pB, I2EE_GOOD); + } + write_unlock_irqrestore(&Dl_spinlock, flags); + + if (mSdelay-- == 0) + break; + + iiDelay(pB, 1); // 1 mS granularity on checking condition + } + I2_COMPLETE(pB, I2EE_TXE_TIME); +} + +//****************************************************************************** +// Function: iiTxMailEmptyII(pB) +// Parameters: pB - pointer to board structure +// +// Returns: True if the transmit mailbox is empty. +// False if it not empty. +// +// Description: +// +// Returns true or false according to whether the transmit mailbox is empty (and +// therefore able to accept more mail) +// +// This version operates on IntelliPort-II - style FIFO's +// +//****************************************************************************** +static int +iiTxMailEmptyII(i2eBordStrPtr pB) +{ + int port = pB->i2ePointer; + outb(SEL_OUTMAIL, port); + return inb(port) == 0; +} + +//****************************************************************************** +// Function: iiTxMailEmptyIIEX(pB) +// Parameters: pB - pointer to board structure +// +// Returns: True if the transmit mailbox is empty. +// False if it not empty. +// +// Description: +// +// Returns true or false according to whether the transmit mailbox is empty (and +// therefore able to accept more mail) +// +// This version operates on IntelliPort-IIEX - style FIFO's +// +//****************************************************************************** +static int +iiTxMailEmptyIIEX(i2eBordStrPtr pB) +{ + return !(inb(pB->i2eStatus) & STE_OUT_MAIL); +} + +//****************************************************************************** +// Function: iiTrySendMailII(pB,mail) +// Parameters: pB - pointer to board structure +// mail - value to write to mailbox +// +// Returns: True if the transmit mailbox is empty, and mail is sent. +// False if it not empty. +// +// Description: +// +// If outgoing mailbox is empty, sends mail and returns true. If outgoing +// mailbox is not empty, returns false. +// +// This version operates on IntelliPort-II - style FIFO's +// +//****************************************************************************** +static int +iiTrySendMailII(i2eBordStrPtr pB, unsigned char mail) +{ + int port = pB->i2ePointer; + + outb(SEL_OUTMAIL, port); + if (inb(port) == 0) { + outb(SEL_OUTMAIL, port); + outb(mail, port); + return 1; + } + return 0; +} + +//****************************************************************************** +// Function: iiTrySendMailIIEX(pB,mail) +// Parameters: pB - pointer to board structure +// mail - value to write to mailbox +// +// Returns: True if the transmit mailbox is empty, and mail is sent. +// False if it not empty. +// +// Description: +// +// If outgoing mailbox is empty, sends mail and returns true. If outgoing +// mailbox is not empty, returns false. +// +// This version operates on IntelliPort-IIEX - style FIFO's +// +//****************************************************************************** +static int +iiTrySendMailIIEX(i2eBordStrPtr pB, unsigned char mail) +{ + if (inb(pB->i2eStatus) & STE_OUT_MAIL) + return 0; + outb(mail, pB->i2eXMail); + return 1; +} + +//****************************************************************************** +// Function: iiGetMailII(pB,mail) +// Parameters: pB - pointer to board structure +// +// Returns: Mailbox data or NO_MAIL_HERE. +// +// Description: +// +// If no mail available, returns NO_MAIL_HERE otherwise returns the data from +// the mailbox, which is guaranteed != NO_MAIL_HERE. +// +// This version operates on IntelliPort-II - style FIFO's +// +//****************************************************************************** +static unsigned short +iiGetMailII(i2eBordStrPtr pB) +{ + if (I2_HAS_MAIL(pB)) { + outb(SEL_INMAIL, pB->i2ePointer); + return inb(pB->i2ePointer); + } else { + return NO_MAIL_HERE; + } +} + +//****************************************************************************** +// Function: iiGetMailIIEX(pB,mail) +// Parameters: pB - pointer to board structure +// +// Returns: Mailbox data or NO_MAIL_HERE. +// +// Description: +// +// If no mail available, returns NO_MAIL_HERE otherwise returns the data from +// the mailbox, which is guaranteed != NO_MAIL_HERE. +// +// This version operates on IntelliPort-IIEX - style FIFO's +// +//****************************************************************************** +static unsigned short +iiGetMailIIEX(i2eBordStrPtr pB) +{ + if (I2_HAS_MAIL(pB)) + return inb(pB->i2eXMail); + else + return NO_MAIL_HERE; +} + +//****************************************************************************** +// Function: iiEnableMailIrqII(pB) +// Parameters: pB - pointer to board structure +// +// Returns: Nothing +// +// Description: +// +// Enables board to interrupt host (only) by writing to host's in-bound mailbox. +// +// This version operates on IntelliPort-II - style FIFO's +// +//****************************************************************************** +static void +iiEnableMailIrqII(i2eBordStrPtr pB) +{ + outb(SEL_MASK, pB->i2ePointer); + outb(ST_IN_MAIL, pB->i2ePointer); +} + +//****************************************************************************** +// Function: iiEnableMailIrqIIEX(pB) +// Parameters: pB - pointer to board structure +// +// Returns: Nothing +// +// Description: +// +// Enables board to interrupt host (only) by writing to host's in-bound mailbox. +// +// This version operates on IntelliPort-IIEX - style FIFO's +// +//****************************************************************************** +static void +iiEnableMailIrqIIEX(i2eBordStrPtr pB) +{ + outb(MX_IN_MAIL, pB->i2eXMask); +} + +//****************************************************************************** +// Function: iiWriteMaskII(pB) +// Parameters: pB - pointer to board structure +// +// Returns: Nothing +// +// Description: +// +// Writes arbitrary value to the mask register. +// +// This version operates on IntelliPort-II - style FIFO's +// +//****************************************************************************** +static void +iiWriteMaskII(i2eBordStrPtr pB, unsigned char value) +{ + outb(SEL_MASK, pB->i2ePointer); + outb(value, pB->i2ePointer); +} + +//****************************************************************************** +// Function: iiWriteMaskIIEX(pB) +// Parameters: pB - pointer to board structure +// +// Returns: Nothing +// +// Description: +// +// Writes arbitrary value to the mask register. +// +// This version operates on IntelliPort-IIEX - style FIFO's +// +//****************************************************************************** +static void +iiWriteMaskIIEX(i2eBordStrPtr pB, unsigned char value) +{ + outb(value, pB->i2eXMask); +} + +//****************************************************************************** +// Function: iiDownloadBlock(pB, pSource, isStandard) +// Parameters: pB - pointer to board structure +// pSource - loadware block to download +// isStandard - True if "standard" loadware, else false. +// +// Returns: Success or Failure +// +// Description: +// +// Downloads a single block (at pSource)to the board referenced by pB. Caller +// sets isStandard to true/false according to whether the "standard" loadware is +// what's being loaded. The normal process, then, is to perform an iiInitialize +// to the board, then perform some number of iiDownloadBlocks using the returned +// state to determine when download is complete. +// +// Possible return values: (see I2ELLIS.H) +// II_DOWN_BADVALID +// II_DOWN_BADFILE +// II_DOWN_CONTINUING +// II_DOWN_GOOD +// II_DOWN_BAD +// II_DOWN_BADSTATE +// II_DOWN_TIMEOUT +// +// Uses the i2eState and i2eToLoad fields (initialized at iiInitialize) to +// determine whether this is the first block, whether to check for magic +// numbers, how many blocks there are to go... +// +//****************************************************************************** +static int +iiDownloadBlock ( i2eBordStrPtr pB, loadHdrStrPtr pSource, int isStandard) +{ + int itemp; + int loadedFirst; + + if (pB->i2eValid != I2E_MAGIC) return II_DOWN_BADVALID; + + switch(pB->i2eState) + { + case II_STATE_READY: + + // Loading the first block after reset. Must check the magic number of the + // loadfile, store the number of blocks we expect to load. + if (pSource->e.loadMagic != MAGIC_LOADFILE) + { + return II_DOWN_BADFILE; + } + + // Next we store the total number of blocks to load, including this one. + pB->i2eToLoad = 1 + pSource->e.loadBlocksMore; + + // Set the state, store the version numbers. ('Cause this may have come + // from a file - we might want to report these versions and revisions in + // case of an error! + pB->i2eState = II_STATE_LOADING; + pB->i2eLVersion = pSource->e.loadVersion; + pB->i2eLRevision = pSource->e.loadRevision; + pB->i2eLSub = pSource->e.loadSubRevision; + + // The time and date of compilation is also available but don't bother + // storing it for normal purposes. + loadedFirst = 1; + break; + + case II_STATE_LOADING: + loadedFirst = 0; + break; + + default: + return II_DOWN_BADSTATE; + } + + // Now we must be in the II_STATE_LOADING state, and we assume i2eToLoad + // must be positive still, because otherwise we would have cleaned up last + // time and set the state to II_STATE_LOADED. + if (!iiWaitForTxEmpty(pB, MAX_DLOAD_READ_TIME)) { + return II_DOWN_TIMEOUT; + } + + if (!iiWriteBuf(pB, pSource->c, LOADWARE_BLOCK_SIZE)) { + return II_DOWN_BADVALID; + } + + // If we just loaded the first block, wait for the fifo to empty an extra + // long time to allow for any special startup code in the firmware, like + // sending status messages to the LCD's. + + if (loadedFirst) { + if (!iiWaitForTxEmpty(pB, MAX_DLOAD_START_TIME)) { + return II_DOWN_TIMEOUT; + } + } + + // Determine whether this was our last block! + if (--(pB->i2eToLoad)) { + return II_DOWN_CONTINUING; // more to come... + } + + // It WAS our last block: Clean up operations... + // ...Wait for last buffer to drain from the board... + if (!iiWaitForTxEmpty(pB, MAX_DLOAD_READ_TIME)) { + return II_DOWN_TIMEOUT; + } + // If there were only a single block written, this would come back + // immediately and be harmless, though not strictly necessary. + itemp = MAX_DLOAD_ACK_TIME/10; + while (--itemp) { + if (I2_HAS_INPUT(pB)) { + switch (inb(pB->i2eData)) { + case LOADWARE_OK: + pB->i2eState = + isStandard ? II_STATE_STDLOADED :II_STATE_LOADED; + + // Some revisions of the bootstrap firmware (e.g. ISA-8 1.0.2) + // will, // if there is a debug port attached, require some + // time to send information to the debug port now. It will do + // this before // executing any of the code we just downloaded. + // It may take up to 700 milliseconds. + if (pB->i2ePom.e.porDiag2 & POR_DEBUG_PORT) { + iiDelay(pB, 700); + } + + return II_DOWN_GOOD; + + case LOADWARE_BAD: + default: + return II_DOWN_BAD; + } + } + + iiDelay(pB, 10); // 10 mS granularity on checking condition + } + + // Drop-through --> timed out waiting for firmware confirmation + + pB->i2eState = II_STATE_BADLOAD; + return II_DOWN_TIMEOUT; +} + +//****************************************************************************** +// Function: iiDownloadAll(pB, pSource, isStandard, size) +// Parameters: pB - pointer to board structure +// pSource - loadware block to download +// isStandard - True if "standard" loadware, else false. +// size - size of data to download (in bytes) +// +// Returns: Success or Failure +// +// Description: +// +// Given a pointer to a board structure, a pointer to the beginning of some +// loadware, whether it is considered the "standard loadware", and the size of +// the array in bytes loads the entire array to the board as loadware. +// +// Assumes the board has been freshly reset and the power-up reset message read. +// (i.e., in II_STATE_READY). Complains if state is bad, or if there seems to be +// too much or too little data to load, or if iiDownloadBlock complains. +//****************************************************************************** +static int +iiDownloadAll(i2eBordStrPtr pB, loadHdrStrPtr pSource, int isStandard, int size) +{ + int status; + + // We know (from context) board should be ready for the first block of + // download. Complain if not. + if (pB->i2eState != II_STATE_READY) return II_DOWN_BADSTATE; + + while (size > 0) { + size -= LOADWARE_BLOCK_SIZE; // How much data should there be left to + // load after the following operation ? + + // Note we just bump pSource by "one", because its size is actually that + // of an entire block, same as LOADWARE_BLOCK_SIZE. + status = iiDownloadBlock(pB, pSource++, isStandard); + + switch(status) + { + case II_DOWN_GOOD: + return ( (size > 0) ? II_DOWN_OVER : II_DOWN_GOOD); + + case II_DOWN_CONTINUING: + break; + + default: + return status; + } + } + + // We shouldn't drop out: it means "while" caught us with nothing left to + // download, yet the previous DownloadBlock did not return complete. Ergo, + // not enough data to match the size byte in the header. + return II_DOWN_UNDER; +} diff --git a/drivers/staging/tty/ip2/i2ellis.h b/drivers/staging/tty/ip2/i2ellis.h new file mode 100644 index 000000000000..fb6df2456018 --- /dev/null +++ b/drivers/staging/tty/ip2/i2ellis.h @@ -0,0 +1,566 @@ +/******************************************************************************* +* +* (c) 1999 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Mainline code for the device driver +* +*******************************************************************************/ +//------------------------------------------------------------------------------ +// i2ellis.h +// +// IntelliPort-II and IntelliPort-IIEX +// +// Extremely +// Low +// Level +// Interface +// Services +// +// Structure Definitions and declarations for "ELLIS" service routines found in +// i2ellis.c +// +// These routines are based on properties of the IntelliPort-II and -IIEX +// hardware and bootstrap firmware, and are not sensitive to particular +// conventions of any particular loadware. +// +// Unlike i2hw.h, which provides IRONCLAD hardware definitions, the material +// here and in i2ellis.c is intended to provice a useful, but not required, +// layer of insulation from the hardware specifics. +//------------------------------------------------------------------------------ +#ifndef I2ELLIS_H /* To prevent multiple includes */ +#define I2ELLIS_H 1 +//------------------------------------------------ +// Revision History: +// +// 30 September 1991 MAG First Draft Started +// 12 October 1991 ...continued... +// +// 20 December 1996 AKM Linux version +//------------------------------------------------- + +//---------------------- +// Mandatory Includes: +//---------------------- +#include "ip2types.h" +#include "i2hw.h" // The hardware definitions + +//------------------------------------------ +// STAT_BOXIDS packets +//------------------------------------------ +#define MAX_BOX 4 + +typedef struct _bidStat +{ + unsigned char bid_value[MAX_BOX]; +} bidStat, *bidStatPtr; + +// This packet is sent in response to a CMD_GET_BOXIDS bypass command. For -IIEX +// boards, reports the hardware-specific "asynchronous resource register" on +// each expansion box. Boxes not present report 0xff. For -II boards, the first +// element contains 0x80 for 8-port, 0x40 for 4-port boards. + +// Box IDs aka ARR or Async Resource Register (more than you want to know) +// 7 6 5 4 3 2 1 0 +// F F N N L S S S +// ============================= +// F F - Product Family Designator +// =====+++++++++++++++++++++++++++++++ +// 0 0 - Intelliport II EX / ISA-8 +// 1 0 - IntelliServer +// 0 1 - SAC - Port Device (Intelliport III ??? ) +// =====+++++++++++++++++++++++++++++++++++++++ +// N N - Number of Ports +// 0 0 - 8 (eight) +// 0 1 - 4 (four) +// 1 0 - 12 (twelve) +// 1 1 - 16 (sixteen) +// =++++++++++++++++++++++++++++++++++ +// L - LCD Display Module Present +// 0 - No +// 1 - LCD module present +// =========+++++++++++++++++++++++++++++++++++++ +// S S S - Async Signals Supported Designator +// 0 0 0 - 8dss, Mod DCE DB25 Female +// 0 0 1 - 6dss, RJ-45 +// 0 1 0 - RS-232/422 dss, DB25 Female +// 0 1 1 - RS-232/422 dss, separate 232/422 DB25 Female +// 1 0 0 - 6dss, 921.6 I/F with ST654's +// 1 0 1 - RS-423/232 8dss, RJ-45 10Pin +// 1 1 0 - 6dss, Mod DCE DB25 Female +// 1 1 1 - NO BOX PRESENT + +#define FF(c) ((c & 0xC0) >> 6) +#define NN(c) ((c & 0x30) >> 4) +#define L(c) ((c & 0x08) >> 3) +#define SSS(c) (c & 0x07) + +#define BID_HAS_654(x) (SSS(x) == 0x04) +#define BID_NO_BOX 0xff /* no box */ +#define BID_8PORT 0x80 /* IP2-8 port */ +#define BID_4PORT 0x81 /* IP2-4 port */ +#define BID_EXP_MASK 0x30 /* IP2-EX */ +#define BID_EXP_8PORT 0x00 /* 8, */ +#define BID_EXP_4PORT 0x10 /* 4, */ +#define BID_EXP_UNDEF 0x20 /* UNDEF, */ +#define BID_EXP_16PORT 0x30 /* 16, */ +#define BID_LCD_CTRL 0x08 /* LCD Controller */ +#define BID_LCD_NONE 0x00 /* - no controller present */ +#define BID_LCD_PRES 0x08 /* - controller present */ +#define BID_CON_MASK 0x07 /* - connector pinouts */ +#define BID_CON_DB25 0x00 /* - DB-25 F */ +#define BID_CON_RJ45 0x01 /* - rj45 */ + +//------------------------------------------------------------------------------ +// i2eBordStr +// +// This structure contains all the information the ELLIS routines require in +// dealing with a particular board. +//------------------------------------------------------------------------------ +// There are some queues here which are guaranteed to never contain the entry +// for a single channel twice. So they must be slightly larger to allow +// unambiguous full/empty management +// +#define CH_QUEUE_SIZE ABS_MOST_PORTS+2 + +typedef struct _i2eBordStr +{ + porStr i2ePom; // Structure containing the power-on message. + + unsigned short i2ePomSize; + // The number of bytes actually read if + // different from sizeof i2ePom, indicates + // there is an error! + + unsigned short i2eStartMail; + // Contains whatever inbound mailbox data + // present at startup. NO_MAIL_HERE indicates + // nothing was present. No special + // significance as of this writing, but may be + // useful for diagnostic reasons. + + unsigned short i2eValid; + // Indicates validity of the structure; if + // i2eValid == I2E_MAGIC, then we can trust + // the other fields. Some (especially + // initialization) functions are good about + // checking for validity. Many functions do + // not, it being assumed that the larger + // context assures we are using a valid + // i2eBordStrPtr. + + unsigned short i2eError; + // Used for returning an error condition from + // several functions which use i2eBordStrPtr + // as an argument. + + // Accelerators to characterize separate features of a board, derived from a + // number of sources. + + unsigned short i2eFifoSize; + // Always, the size of the FIFO. For + // IntelliPort-II, always the same, for -IIEX + // taken from the Power-On reset message. + + volatile + unsigned short i2eFifoRemains; + // Used during normal operation to indicate a + // lower bound on the amount of data which + // might be in the outbound fifo. + + unsigned char i2eFifoStyle; + // Accelerator which tells which style (-II or + // -IIEX) FIFO we are using. + + unsigned char i2eDataWidth16; + // Accelerator which tells whether we should + // do 8 or 16-bit data transfers. + + unsigned char i2eMaxIrq; + // The highest allowable IRQ, based on the + // slot size. + + // Accelerators for various addresses on the board + int i2eBase; // I/O Address of the Board + int i2eData; // From here data transfers happen + int i2eStatus; // From here status reads happen + int i2ePointer; // (IntelliPort-II: pointer/commands) + int i2eXMail; // (IntelliPOrt-IIEX: mailboxes + int i2eXMask; // (IntelliPort-IIEX: mask write + + //------------------------------------------------------- + // Information presented in a common format across boards + // For each box, bit map of the channels present. Box closest to + // the host is box 0. LSB is channel 0. IntelliPort-II (non-expandable) + // is taken to be box 0. These are derived from product i.d. registers. + + unsigned short i2eChannelMap[ABS_MAX_BOXES]; + + // Same as above, except each is derived from firmware attempting to detect + // the uart presence (by reading a valid GFRCR register). If bits are set in + // i2eChannelMap and not in i2eGoodMap, there is a potential problem. + + unsigned short i2eGoodMap[ABS_MAX_BOXES]; + + // --------------------------- + // For indirect function calls + + // Routine to cause an N-millisecond delay: Patched by the ii2Initialize + // function. + + void (*i2eDelay)(unsigned int); + + // Routine to write N bytes to the board through the FIFO. Returns true if + // all copacetic, otherwise returns false and error is in i2eError field. + // IF COUNT IS ODD, ROUNDS UP TO THE NEXT EVEN NUMBER. + + int (*i2eWriteBuf)(struct _i2eBordStr *, unsigned char *, int); + + // Routine to read N bytes from the board through the FIFO. Returns true if + // copacetic, otherwise returns false and error in i2eError. + // IF COUNT IS ODD, ROUNDS UP TO THE NEXT EVEN NUMBER. + + int (*i2eReadBuf)(struct _i2eBordStr *, unsigned char *, int); + + // Returns a word from FIFO. Will use 2 byte operations if needed. + + unsigned short (*i2eReadWord)(struct _i2eBordStr *); + + // Writes a word to FIFO. Will use 2 byte operations if needed. + + void (*i2eWriteWord)(struct _i2eBordStr *, unsigned short); + + // Waits specified time for the Transmit FIFO to go empty. Returns true if + // ok, otherwise returns false and error in i2eError. + + int (*i2eWaitForTxEmpty)(struct _i2eBordStr *, int); + + // Returns true or false according to whether the outgoing mailbox is empty. + + int (*i2eTxMailEmpty)(struct _i2eBordStr *); + + // Checks whether outgoing mailbox is empty. If so, sends mail and returns + // true. Otherwise returns false. + + int (*i2eTrySendMail)(struct _i2eBordStr *, unsigned char); + + // If no mail available, returns NO_MAIL_HERE, else returns the value in the + // mailbox (guaranteed can't be NO_MAIL_HERE). + + unsigned short (*i2eGetMail)(struct _i2eBordStr *); + + // Enables the board to interrupt the host when it writes to the mailbox. + // Irqs will not occur, however, until the loadware separately enables + // interrupt generation to the host. The standard loadware does this in + // response to a command packet sent by the host. (Also, disables + // any other potential interrupt sources from the board -- other than the + // inbound mailbox). + + void (*i2eEnableMailIrq)(struct _i2eBordStr *); + + // Writes an arbitrary value to the mask register. + + void (*i2eWriteMask)(struct _i2eBordStr *, unsigned char); + + + // State information + + // During downloading, indicates the number of blocks remaining to download + // to the board. + + short i2eToLoad; + + // State of board (see manifests below) (e.g., whether in reset condition, + // whether standard loadware is installed, etc. + + unsigned char i2eState; + + // These three fields are only valid when there is loadware running on the + // board. (i2eState == II_STATE_LOADED or i2eState == II_STATE_STDLOADED ) + + unsigned char i2eLVersion; // Loadware version + unsigned char i2eLRevision; // Loadware revision + unsigned char i2eLSub; // Loadware subrevision + + // Flags which only have meaning in the context of the standard loadware. + // Somewhat violates the layering concept, but there is so little additional + // needed at the board level (while much additional at the channel level), + // that this beats maintaining two different per-board structures. + + // Indicates which IRQ the board has been initialized (from software) to use + // For MicroChannel boards, any value different from IRQ_UNDEFINED means + // that the software command has been sent to enable interrupts (or specify + // they are disabled). Special value: IRQ_UNDEFINED indicates that the + // software command to select the interrupt has not yet been sent, therefore + // (since the standard loadware insists that it be sent before any other + // packets are sent) no other packets should be sent yet. + + unsigned short i2eUsingIrq; + + // This is set when we hit the MB_OUT_STUFFED mailbox, which prevents us + // putting more in the mailbox until an appropriate mailbox message is + // received. + + unsigned char i2eWaitingForEmptyFifo; + + // Any mailbox bits waiting to be sent to the board are OR'ed in here. + + unsigned char i2eOutMailWaiting; + + // The head of any incoming packet is read into here, is then examined and + // we dispatch accordingly. + + unsigned short i2eLeadoffWord[1]; + + // Running counter of interrupts where the mailbox indicated incoming data. + + unsigned short i2eFifoInInts; + + // Running counter of interrupts where the mailbox indicated outgoing data + // had been stripped. + + unsigned short i2eFifoOutInts; + + // If not void, gives the address of a routine to call if fatal board error + // is found (only applies to standard l/w). + + void (*i2eFatalTrap)(struct _i2eBordStr *); + + // Will point to an array of some sort of channel structures (whose format + // is unknown at this level, being a function of what loadware is + // installed and the code configuration (max sizes of buffers, etc.)). + + void *i2eChannelPtr; + + // Set indicates that the board has gone fatal. + + unsigned short i2eFatal; + + // The number of elements pointed to by i2eChannelPtr. + + unsigned short i2eChannelCnt; + + // Ring-buffers of channel structures whose channels have particular needs. + + rwlock_t Fbuf_spinlock; + volatile + unsigned short i2Fbuf_strip; // Strip index + volatile + unsigned short i2Fbuf_stuff; // Stuff index + void *i2Fbuf[CH_QUEUE_SIZE]; // An array of channel pointers + // of channels who need to send + // flow control packets. + rwlock_t Dbuf_spinlock; + volatile + unsigned short i2Dbuf_strip; // Strip index + volatile + unsigned short i2Dbuf_stuff; // Stuff index + void *i2Dbuf[CH_QUEUE_SIZE]; // An array of channel pointers + // of channels who need to send + // data or in-line command packets. + rwlock_t Bbuf_spinlock; + volatile + unsigned short i2Bbuf_strip; // Strip index + volatile + unsigned short i2Bbuf_stuff; // Stuff index + void *i2Bbuf[CH_QUEUE_SIZE]; // An array of channel pointers + // of channels who need to send + // bypass command packets. + + /* + * A set of flags to indicate that certain events have occurred on at least + * one of the ports on this board. We use this to decide whether to spin + * through the channels looking for breaks, etc. + */ + int got_input; + int status_change; + bidStat channelBtypes; + + /* + * Debugging counters, etc. + */ + unsigned long debugFlowQueued; + unsigned long debugInlineQueued; + unsigned long debugDataQueued; + unsigned long debugBypassQueued; + unsigned long debugFlowCount; + unsigned long debugInlineCount; + unsigned long debugBypassCount; + + rwlock_t read_fifo_spinlock; + rwlock_t write_fifo_spinlock; + +// For queuing interrupt bottom half handlers. /\/\|=mhw=|\/\/ + struct work_struct tqueue_interrupt; + + struct timer_list SendPendingTimer; // Used by iiSendPending + unsigned int SendPendingRetry; +} i2eBordStr, *i2eBordStrPtr; + +//------------------------------------------------------------------- +// Macro Definitions for the indirect calls defined in the i2eBordStr +//------------------------------------------------------------------- +// +#define iiDelay(a,b) (*(a)->i2eDelay)(b) +#define iiWriteBuf(a,b,c) (*(a)->i2eWriteBuf)(a,b,c) +#define iiReadBuf(a,b,c) (*(a)->i2eReadBuf)(a,b,c) + +#define iiWriteWord(a,b) (*(a)->i2eWriteWord)(a,b) +#define iiReadWord(a) (*(a)->i2eReadWord)(a) + +#define iiWaitForTxEmpty(a,b) (*(a)->i2eWaitForTxEmpty)(a,b) + +#define iiTxMailEmpty(a) (*(a)->i2eTxMailEmpty)(a) +#define iiTrySendMail(a,b) (*(a)->i2eTrySendMail)(a,b) + +#define iiGetMail(a) (*(a)->i2eGetMail)(a) +#define iiEnableMailIrq(a) (*(a)->i2eEnableMailIrq)(a) +#define iiDisableMailIrq(a) (*(a)->i2eWriteMask)(a,0) +#define iiWriteMask(a,b) (*(a)->i2eWriteMask)(a,b) + +//------------------------------------------- +// Manifests for i2eBordStr: +//------------------------------------------- + +typedef void (*delayFunc_t)(unsigned int); + +// i2eValid +// +#define I2E_MAGIC 0x4251 // Structure is valid. +#define I2E_INCOMPLETE 0x1122 // Structure failed during init. + + +// i2eError +// +#define I2EE_GOOD 0 // Operation successful +#define I2EE_BADADDR 1 // Address out of range +#define I2EE_BADSTATE 2 // Attempt to perform a function when the board + // structure was in the incorrect state +#define I2EE_BADMAGIC 3 // Bad magic number from Power On test (i2ePomSize + // reflects what was read +#define I2EE_PORM_SHORT 4 // Power On message too short +#define I2EE_PORM_LONG 5 // Power On message too long +#define I2EE_BAD_FAMILY 6 // Un-supported board family type +#define I2EE_INCONSIST 7 // Firmware reports something impossible, + // e.g. unexpected number of ports... Almost no + // excuse other than bad FIFO... +#define I2EE_POSTERR 8 // Power-On self test reported a bad error +#define I2EE_BADBUS 9 // Unknown Bus type declared in message +#define I2EE_TXE_TIME 10 // Timed out waiting for TX Fifo to empty +#define I2EE_INVALID 11 // i2eValid field does not indicate a valid and + // complete board structure (for functions which + // require this be so.) +#define I2EE_BAD_PORT 12 // Discrepancy between channels actually found and + // what the product is supposed to have. Check + // i2eGoodMap vs i2eChannelMap for details. +#define I2EE_BAD_IRQ 13 // Someone specified an unsupported IRQ +#define I2EE_NOCHANNELS 14 // No channel structures have been defined (for + // functions requiring this). + +// i2eFifoStyle +// +#define FIFO_II 0 /* IntelliPort-II style: see also i2hw.h */ +#define FIFO_IIEX 1 /* IntelliPort-IIEX style */ + +// i2eGetMail +// +#define NO_MAIL_HERE 0x1111 // Since mail is unsigned char, cannot possibly + // promote to 0x1111. +// i2eState +// +#define II_STATE_COLD 0 // Addresses have been defined, but board not even + // reset yet. +#define II_STATE_RESET 1 // Board,if it exists, has just been reset +#define II_STATE_READY 2 // Board ready for its first block +#define II_STATE_LOADING 3 // Board continuing load +#define II_STATE_LOADED 4 // Board has finished load: status ok +#define II_STATE_BADLOAD 5 // Board has finished load: failed! +#define II_STATE_STDLOADED 6 // Board has finished load: standard firmware + +// i2eUsingIrq +// +#define I2_IRQ_UNDEFINED 0x1352 /* No valid irq (or polling = 0) can + * ever promote to this! */ +//------------------------------------------ +// Handy Macros for i2ellis.c and others +// Note these are common to -II and -IIEX +//------------------------------------------ + +// Given a pointer to the board structure, does the input FIFO have any data or +// not? +// +#define I2_HAS_INPUT(pB) !(inb(pB->i2eStatus) & ST_IN_EMPTY) + +// Given a pointer to the board structure, is there anything in the incoming +// mailbox? +// +#define I2_HAS_MAIL(pB) (inb(pB->i2eStatus) & ST_IN_MAIL) + +#define I2_UPDATE_FIFO_ROOM(pB) ((pB)->i2eFifoRemains = (pB)->i2eFifoSize) + +//------------------------------------------ +// Function Declarations for i2ellis.c +//------------------------------------------ +// +// Functions called directly +// +// Initialization of a board & structure is in four (five!) parts: +// +// 1) iiSetAddress() - Define the board address & delay function for a board. +// 2) iiReset() - Reset the board (provided it exists) +// -- Note you may do this to several boards -- +// 3) iiResetDelay() - Delay for 2 seconds (once for all boards) +// 4) iiInitialize() - Attempt to read Power-up message; further initialize +// accelerators +// +// Then you may use iiDownloadAll() or iiDownloadFile() (in i2file.c) to write +// loadware. To change loadware, you must begin again with step 2, resetting +// the board again (step 1 not needed). + +static int iiSetAddress(i2eBordStrPtr, int, delayFunc_t ); +static int iiReset(i2eBordStrPtr); +static int iiResetDelay(i2eBordStrPtr); +static int iiInitialize(i2eBordStrPtr); + +// Routine to validate that all channels expected are there. +// +extern int iiValidateChannels(i2eBordStrPtr); + +// Routine used to download a block of loadware. +// +static int iiDownloadBlock(i2eBordStrPtr, loadHdrStrPtr, int); + +// Return values given by iiDownloadBlock, iiDownloadAll, iiDownloadFile: +// +#define II_DOWN_BADVALID 0 // board structure is invalid +#define II_DOWN_CONTINUING 1 // So far, so good, firmware expects more +#define II_DOWN_GOOD 2 // Download complete, CRC good +#define II_DOWN_BAD 3 // Download complete, but CRC bad +#define II_DOWN_BADFILE 4 // Bad magic number in loadware file +#define II_DOWN_BADSTATE 5 // Board is in an inappropriate state for + // downloading loadware. (see i2eState) +#define II_DOWN_TIMEOUT 6 // Timeout waiting for firmware +#define II_DOWN_OVER 7 // Too much data +#define II_DOWN_UNDER 8 // Not enough data +#define II_DOWN_NOFILE 9 // Loadware file not found + +// Routine to download an entire loadware module: Return values are a subset of +// iiDownloadBlock's, excluding, of course, II_DOWN_CONTINUING +// +static int iiDownloadAll(i2eBordStrPtr, loadHdrStrPtr, int, int); + +// Many functions defined here return True if good, False otherwise, with an +// error code in i2eError field. Here is a handy macro for setting the error +// code and returning. +// +#define I2_COMPLETE(pB,code) do { \ + pB->i2eError = code; \ + return (code == I2EE_GOOD);\ + } while (0) + +#endif // I2ELLIS_H diff --git a/drivers/staging/tty/ip2/i2hw.h b/drivers/staging/tty/ip2/i2hw.h new file mode 100644 index 000000000000..c0ba6c05f0cd --- /dev/null +++ b/drivers/staging/tty/ip2/i2hw.h @@ -0,0 +1,652 @@ +/******************************************************************************* +* +* (c) 1999 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Definitions limited to properties of the hardware or the +* bootstrap firmware. As such, they are applicable regardless of +* operating system or loadware (standard or diagnostic). +* +*******************************************************************************/ +#ifndef I2HW_H +#define I2HW_H 1 +//------------------------------------------------------------------------------ +// Revision History: +// +// 23 September 1991 MAG First Draft Started...through... +// 11 October 1991 ... Continuing development... +// 6 August 1993 Added support for ISA-4 (asic) which is architected +// as an ISA-CEX with a single 4-port box. +// +// 20 December 1996 AKM Version for Linux +// +//------------------------------------------------------------------------------ +/*------------------------------------------------------------------------------ + +HARDWARE DESCRIPTION: + +Introduction: + +The IntelliPort-II and IntelliPort-IIEX products occupy a block of eight (8) +addresses in the host's I/O space. + +Some addresses are used to transfer data to/from the board, some to transfer +so-called "mailbox" messages, and some to read bit-mapped status information. +While all the products in the line are functionally similar, some use a 16-bit +data path to transfer data while others use an 8-bit path. Also, the use of +command /status/mailbox registers differs slightly between the II and IIEX +branches of the family. + +The host determines what type of board it is dealing with by reading a string of +sixteen characters from the board. These characters are always placed in the +fifo by the board's local processor whenever the board is reset (either from +power-on or under software control) and are known as the "Power-on Reset +Message." In order that this message can be read from either type of board, the +hardware registers used in reading this message are the same. Once this message +has been read by the host, then it has the information required to operate. + +General Differences between boards: + +The greatest structural difference is between the -II and -IIEX families of +product. The -II boards use the Am4701 dual 512x8 bidirectional fifo to support +the data path, mailbox registers, and status registers. This chip contains some +features which are not used in the IntelliPort-II products; a description of +these is omitted here. Because of these many features, it contains many +registers, too many to access directly within a small address space. They are +accessed by first writing a value to a "pointer" register. This value selects +the register to be accessed. The next read or write to that address accesses +the selected register rather than the pointer register. + +The -IIEX boards use a proprietary design similar to the Am4701 in function. But +because of a simpler, more streamlined design it doesn't require so many +registers. This means they can be accessed directly in single operations rather +than through a pointer register. + +Besides these differences, there are differences in whether 8-bit or 16-bit +transfers are used to move data to the board. + +The -II boards are capable only of 8-bit data transfers, while the -IIEX boards +may be configured for either 8-bit or 16-bit data transfers. If the on-board DIP +switch #8 is ON, and the card has been installed in a 16-bit slot, 16-bit +transfers are supported (and will be expected by the standard loadware). The +on-board firmware can determine the position of the switch, and whether the +board is installed in a 16-bit slot; it supplies this information to the host as +part of the power-up reset message. + +The configuration switch (#8) and slot selection do not directly configure the +hardware. It is up to the on-board loadware and host-based drivers to act +according to the selected options. That is, loadware and drivers could be +written to perform 8-bit transfers regardless of the state of the DIP switch or +slot (and in a diagnostic environment might well do so). Likewise, 16-bit +transfers could be performed as long as the card is in a 16-bit slot. + +Note the slot selection and DIP switch selection are provided separately: a +board running in 8-bit mode in a 16-bit slot has a greater range of possible +interrupts to choose from; information of potential use to the host. + +All 8-bit data transfers are done in the same way, regardless of whether on a +-II board or a -IIEX board. + +The host must consider two things then: 1) whether a -II or -IIEX product is +being used, and 2) whether an 8-bit or 16-bit data path is used. + +A further difference is that -II boards always have a 512-byte fifo operating in +each direction. -IIEX boards may use fifos of varying size; this size is +reported as part of the power-up message. + +I/O Map Of IntelliPort-II and IntelliPort-IIEX boards: +(Relative to the chosen base address) + +Addr R/W IntelliPort-II IntelliPort-IIEX +---- --- -------------- ---------------- +0 R/W Data Port (byte) Data Port (byte or word) +1 R/W (Not used) (MSB of word-wide data written to Data Port) +2 R Status Register Status Register +2 W Pointer Register Interrupt Mask Register +3 R/W (Not used) Mailbox Registers (6 bits: 11111100) +4,5 -- Reserved for future products +6 -- Reserved for future products +7 R Guaranteed to have no effect +7 W Hardware reset of board. + + +Rules: +All data transfers are performed using the even i/o address. If byte-wide data +transfers are being used, do INB/OUTB operations on the data port. If word-wide +transfers are used, do INW/OUTW operations. In some circumstances (such as +reading the power-up message) you will do INB from the data port, but in this +case the MSB of each word read is lost. When accessing all other unreserved +registers, use byte operations only. +------------------------------------------------------------------------------*/ + +//------------------------------------------------ +// Mandatory Includes: +//------------------------------------------------ +// +#include "ip2types.h" + +//------------------------------------------------------------------------- +// Manifests for the I/O map: +//------------------------------------------------------------------------- +// R/W: Data port (byte) for IntelliPort-II, +// R/W: Data port (byte or word) for IntelliPort-IIEX +// Incoming or outgoing data passes through a FIFO, the status of which is +// available in some of the bits in FIFO_STATUS. This (bidirectional) FIFO is +// the primary means of transferring data, commands, flow-control, and status +// information between the host and board. +// +#define FIFO_DATA 0 + +// Another way of passing information between the board and the host is +// through "mailboxes". Unlike a FIFO, a mailbox holds only a single byte of +// data. Writing data to the mailbox causes a status bit to be set, and +// potentially interrupting the intended receiver. The sender has some way to +// determine whether the data has been read yet; as soon as it has, it may send +// more. The mailboxes are handled differently on -II and -IIEX products, as +// suggested below. +//------------------------------------------------------------------------------ +// Read: Status Register for IntelliPort-II or -IIEX +// The presence of any bit set here will cause an interrupt to the host, +// provided the corresponding bit has been unmasked in the interrupt mask +// register. Furthermore, interrupts to the host are disabled globally until the +// loadware selects the irq line to use. With the exception of STN_MR, the bits +// remain set so long as the associated condition is true. +// +#define FIFO_STATUS 2 + +// Bit map of status bits which are identical for -II and -IIEX +// +#define ST_OUT_FULL 0x40 // Outbound FIFO full +#define ST_IN_EMPTY 0x20 // Inbound FIFO empty +#define ST_IN_MAIL 0x04 // Inbound Mailbox full + +// The following exists only on the Intelliport-IIEX, and indicates that the +// board has not read the last outgoing mailbox data yet. In the IntelliPort-II, +// the outgoing mailbox may be read back: a zero indicates the board has read +// the data. +// +#define STE_OUT_MAIL 0x80 // Outbound mailbox full (!) + +// The following bits are defined differently for -II and -IIEX boards. Code +// which relies on these bits will need to be functionally different for the two +// types of boards and should be generally avoided because of the additional +// complexity this creates: + +// Bit map of status bits only on -II + +// Fifo has been RESET (cleared when the status register is read). Note that +// this condition cannot be masked and would always interrupt the host, except +// that the hardware reset also disables interrupts globally from the board +// until re-enabled by loadware. This could also arise from the +// Am4701-supported command to reset the chip, but this command is generally not +// used here. +// +#define STN_MR 0x80 + +// See the AMD Am4701 data sheet for details on the following four bits. They +// are not presently used by Computone drivers. +// +#define STN_OUT_AF 0x10 // Outbound FIFO almost full (programmable) +#define STN_IN_AE 0x08 // Inbound FIFO almost empty (programmable) +#define STN_BD 0x02 // Inbound byte detected +#define STN_PE 0x01 // Parity/Framing condition detected + +// Bit-map of status bits only on -IIEX +// +#define STE_OUT_HF 0x10 // Outbound FIFO half full +#define STE_IN_HF 0x08 // Inbound FIFO half full +#define STE_IN_FULL 0x02 // Inbound FIFO full +#define STE_OUT_MT 0x01 // Outbound FIFO empty + +//------------------------------------------------------------------------------ + +// Intelliport-II -- Write Only: the pointer register. +// Values are written to this register to select the Am4701 internal register to +// be accessed on the next operation. +// +#define FIFO_PTR 0x02 + +// Values for the pointer register +// +#define SEL_COMMAND 0x1 // Selects the Am4701 command register + +// Some possible commands: +// +#define SEL_CMD_MR 0x80 // Am4701 command to reset the chip +#define SEL_CMD_SH 0x40 // Am4701 command to map the "other" port into the + // status register. +#define SEL_CMD_UNSH 0 // Am4701 command to "unshift": port maps into its + // own status register. +#define SEL_MASK 0x2 // Selects the Am4701 interrupt mask register. The + // interrupt mask register is bit-mapped to match + // the status register (FIFO_STATUS) except for + // STN_MR. (See above.) +#define SEL_BYTE_DET 0x3 // Selects the Am4701 byte-detect register. (Not + // normally used except in diagnostics.) +#define SEL_OUTMAIL 0x4 // Selects the outbound mailbox (R/W). Reading back + // a value of zero indicates that the mailbox has + // been read by the board and is available for more + // data./ Writing to the mailbox optionally + // interrupts the board, depending on the loadware's + // setting of its interrupt mask register. +#define SEL_AEAF 0x5 // Selects AE/AF threshold register. +#define SEL_INMAIL 0x6 // Selects the inbound mailbox (Read) + +//------------------------------------------------------------------------------ +// IntelliPort-IIEX -- Write Only: interrupt mask (and misc flags) register: +// Unlike IntelliPort-II, bit assignments do NOT match those of the status +// register. +// +#define FIFO_MASK 0x2 + +// Mailbox readback select: +// If set, reads to FIFO_MAIL will read the OUTBOUND mailbox (host to board). If +// clear (default on reset) reads to FIFO_MAIL will read the INBOUND mailbox. +// This is the normal situation. The clearing of a mailbox is determined on +// -IIEX boards by waiting for the STE_OUT_MAIL bit to clear. Readback +// capability is provided for diagnostic purposes only. +// +#define MX_OUTMAIL_RSEL 0x80 + +#define MX_IN_MAIL 0x40 // Enables interrupts when incoming mailbox goes + // full (ST_IN_MAIL set). +#define MX_IN_FULL 0x20 // Enables interrupts when incoming FIFO goes full + // (STE_IN_FULL). +#define MX_IN_MT 0x08 // Enables interrupts when incoming FIFO goes empty + // (ST_IN_MT). +#define MX_OUT_FULL 0x04 // Enables interrupts when outgoing FIFO goes full + // (ST_OUT_FULL). +#define MX_OUT_MT 0x01 // Enables interrupts when outgoing FIFO goes empty + // (STE_OUT_MT). + +// Any remaining bits are reserved, and should be written to ZERO for +// compatibility with future Computone products. + +//------------------------------------------------------------------------------ +// IntelliPort-IIEX: -- These are only 6-bit mailboxes !!! -- 11111100 (low two +// bits always read back 0). +// Read: One of the mailboxes, usually Inbound. +// Inbound Mailbox (MX_OUTMAIL_RSEL = 0) +// Outbound Mailbox (MX_OUTMAIL_RSEL = 1) +// Write: Outbound Mailbox +// For the IntelliPort-II boards, the outbound mailbox is read back to determine +// whether the board has read the data (0 --> data has been read). For the +// IntelliPort-IIEX, this is done by reading a status register. To determine +// whether mailbox is available for more outbound data, use the STE_OUT_MAIL bit +// in FIFO_STATUS. Moreover, although the Outbound Mailbox can be read back by +// setting MX_OUTMAIL_RSEL, it is NOT cleared when the board reads it, as is the +// case with the -II boards. For this reason, FIFO_MAIL is normally used to read +// the inbound FIFO, and MX_OUTMAIL_RSEL kept clear. (See above for +// MX_OUTMAIL_RSEL description.) +// +#define FIFO_MAIL 0x3 + +//------------------------------------------------------------------------------ +// WRITE ONLY: Resets the board. (Data doesn't matter). +// +#define FIFO_RESET 0x7 + +//------------------------------------------------------------------------------ +// READ ONLY: Will have no effect. (Data is undefined.) +// Actually, there will be an effect, in that the operation is sure to generate +// a bus cycle: viz., an I/O byte Read. This fact can be used to enforce short +// delays when no comparable time constant is available. +// +#define FIFO_NOP 0x7 + +//------------------------------------------------------------------------------ +// RESET & POWER-ON RESET MESSAGE +/*------------------------------------------------------------------------------ +RESET: + +The IntelliPort-II and -IIEX boards are reset in three ways: Power-up, channel +reset, and via a write to the reset register described above. For products using +the ISA bus, these three sources of reset are equvalent. For MCA and EISA buses, +the Power-up and channel reset sources cause additional hardware initialization +which should only occur at system startup time. + +The third type of reset, called a "command reset", is done by writing any data +to the FIFO_RESET address described above. This resets the on-board processor, +FIFO, UARTS, and associated hardware. + +This passes control of the board to the bootstrap firmware, which performs a +Power-On Self Test and which detects its current configuration. For example, +-IIEX products determine the size of FIFO which has been installed, and the +number and type of expansion boxes attached. + +This and other information is then written to the FIFO in a 16-byte data block +to be read by the host. This block is guaranteed to be present within two (2) +seconds of having received the command reset. The firmware is now ready to +receive loadware from the host. + +It is good practice to perform a command reset to the board explicitly as part +of your software initialization. This allows your code to properly restart from +a soft boot. (Many systems do not issue channel reset on soft boot). + +Because of a hardware reset problem on some of the Cirrus Logic 1400's which are +used on the product, it is recommended that you reset the board twice, separated +by an approximately 50 milliseconds delay. (VERY approximately: probably ok to +be off by a factor of five. The important point is that the first command reset +in fact generates a reset pulse on the board. This pulse is guaranteed to last +less than 10 milliseconds. The additional delay ensures the 1400 has had the +chance to respond sufficiently to the first reset. Why not a longer delay? Much +more than 50 milliseconds gets to be noticable, but the board would still work. + +Once all 16 bytes of the Power-on Reset Message have been read, the bootstrap +firmware is ready to receive loadware. + +Note on Power-on Reset Message format: +The various fields have been designed with future expansion in view. +Combinations of bitfields and values have been defined which define products +which may not currently exist. This has been done to allow drivers to anticipate +the possible introduction of products in a systematic fashion. This is not +intended to suggest that each potential product is actually under consideration. +------------------------------------------------------------------------------*/ + +//---------------------------------------- +// Format of Power-on Reset Message +//---------------------------------------- + +typedef union _porStr // "por" stands for Power On Reset +{ + unsigned char c[16]; // array used when considering the message as a + // string of undifferentiated characters + + struct // Elements used when considering values + { + // The first two bytes out of the FIFO are two magic numbers. These are + // intended to establish that there is indeed a member of the + // IntelliPort-II(EX) family present. The remaining bytes may be + // expected // to be valid. When reading the Power-on Reset message, + // if the magic numbers do not match it is probably best to stop + // reading immediately. You are certainly not reading our board (unless + // hardware is faulty), and may in fact be reading some other piece of + // hardware. + + unsigned char porMagic1; // magic number: first byte == POR_MAGIC_1 + unsigned char porMagic2; // magic number: second byte == POR_MAGIC_2 + + // The Version, Revision, and Subrevision are stored as absolute numbers + // and would normally be displayed in the format V.R.S (e.g. 1.0.2) + + unsigned char porVersion; // Bootstrap firmware version number + unsigned char porRevision; // Bootstrap firmware revision number + unsigned char porSubRev; // Bootstrap firmware sub-revision number + + unsigned char porID; // Product ID: Bit-mapped according to + // conventions described below. Among other + // things, this allows us to distinguish + // IntelliPort-II boards from IntelliPort-IIEX + // boards. + + unsigned char porBus; // IntelliPort-II: Unused + // IntelliPort-IIEX: Bus Information: + // Bit-mapped below + + unsigned char porMemory; // On-board DRAM size: in 32k blocks + + // porPorts1 (and porPorts2) are used to determine the ports which are + // available to the board. For non-expandable product, a single number + // is sufficient. For expandable product, the board may be connected + // to as many as four boxes. Each box may be (so far) either a 16-port + // or an 8-port size. Whenever an 8-port box is used, the remaining 8 + // ports leave gaps between existing channels. For that reason, + // expandable products must report a MAP of available channels. Since + // each UART supports four ports, we represent each UART found by a + // single bit. Using two bytes to supply the mapping information we + // report the presense or absense of up to 16 UARTS, or 64 ports in + // steps of 4 ports. For -IIEX products, the ports are numbered + // starting at the box closest to the controller in the "chain". + + // Interpreted Differently for IntelliPort-II and -IIEX. + // -II: Number of ports (Derived actually from product ID). See + // Diag1&2 to indicate if uart was actually detected. + // -IIEX: Bit-map of UARTS found, LSB (see below for MSB of this). This + // bitmap is based on detecting the uarts themselves; + // see porFlags for information from the box i.d's. + unsigned char porPorts1; + + unsigned char porDiag1; // Results of on-board P.O.S.T, 1st byte + unsigned char porDiag2; // Results of on-board P.O.S.T, 2nd byte + unsigned char porSpeed; // Speed of local CPU: given as MHz x10 + // e.g., 16.0 MHz CPU is reported as 160 + unsigned char porFlags; // Misc information (see manifests below) + // Bit-mapped: CPU type, UART's present + + unsigned char porPorts2; // -II: Undefined + // -IIEX: Bit-map of UARTS found, MSB (see + // above for LSB) + + // IntelliPort-II: undefined + // IntelliPort-IIEX: 1 << porFifoSize gives the size, in bytes, of the + // host interface FIFO, in each direction. When running the -IIEX in + // 8-bit mode, fifo capacity is halved. The bootstrap firmware will + // have already accounted for this fact in generating this number. + unsigned char porFifoSize; + + // IntelliPort-II: undefined + // IntelliPort-IIEX: The number of boxes connected. (Presently 1-4) + unsigned char porNumBoxes; + } e; +} porStr, *porStrPtr; + +//-------------------------- +// Values for porStr fields +//-------------------------- + +//--------------------- +// porMagic1, porMagic2 +//---------------------- +// +#define POR_MAGIC_1 0x96 // The only valid value for porMagic1 +#define POR_MAGIC_2 0x35 // The only valid value for porMagic2 +#define POR_1_INDEX 0 // Byte position of POR_MAGIC_1 +#define POR_2_INDEX 1 // Ditto for POR_MAGIC_2 + +//---------------------- +// porID +//---------------------- +// +#define POR_ID_FAMILY 0xc0 // These bits indicate the general family of + // product. +#define POR_ID_FII 0x00 // Family is "IntelliPort-II" +#define POR_ID_FIIEX 0x40 // Family is "IntelliPort-IIEX" + +// These bits are reserved, presently zero. May be used at a later date to +// convey other product information. +// +#define POR_ID_RESERVED 0x3c + +#define POR_ID_SIZE 0x03 // Remaining bits indicate number of ports & + // Connector information. +#define POR_ID_II_8 0x00 // For IntelliPort-II, indicates 8-port using + // standard brick. +#define POR_ID_II_8R 0x01 // For IntelliPort-II, indicates 8-port using + // RJ11's (no CTS) +#define POR_ID_II_6 0x02 // For IntelliPort-II, indicates 6-port using + // RJ45's +#define POR_ID_II_4 0x03 // For IntelliPort-II, indicates 4-port using + // 4xRJ45 connectors +#define POR_ID_EX 0x00 // For IntelliPort-IIEX, indicates standard + // expandable controller (other values reserved) + +//---------------------- +// porBus +//---------------------- + +// IntelliPort-IIEX only: Board is installed in a 16-bit slot +// +#define POR_BUS_SLOT16 0x20 + +// IntelliPort-IIEX only: DIP switch #8 is on, selecting 16-bit host interface +// operation. +// +#define POR_BUS_DIP16 0x10 + +// Bits 0-2 indicate type of bus: This information is stored in the bootstrap +// loadware, different loadware being used on different products for different +// buses. For most situations, the drivers do not need this information; but it +// is handy in a diagnostic environment. For example, on microchannel boards, +// you would not want to try to test several interrupts, only the one for which +// you were configured. +// +#define POR_BUS_TYPE 0x07 + +// Unknown: this product doesn't know what bus it is running in. (e.g. if same +// bootstrap firmware were wanted for two different buses.) +// +#define POR_BUS_T_UNK 0 + +// Note: existing firmware for ISA-8 and MC-8 currently report the POR_BUS_T_UNK +// state, since the same bootstrap firmware is used for each. + +#define POR_BUS_T_MCA 1 // MCA BUS */ +#define POR_BUS_T_EISA 2 // EISA BUS */ +#define POR_BUS_T_ISA 3 // ISA BUS */ + +// Values 4-7 Reserved + +// Remaining bits are reserved + +//---------------------- +// porDiag1 +//---------------------- + +#define POR_BAD_MAPPER 0x80 // HW failure on P.O.S.T: Chip mapper failed + +// These two bits valid only for the IntelliPort-II +// +#define POR_BAD_UART1 0x01 // First 1400 bad +#define POR_BAD_UART2 0x02 // Second 1400 bad + +//---------------------- +// porDiag2 +//---------------------- + +#define POR_DEBUG_PORT 0x80 // debug port was detected by the P.O.S.T +#define POR_DIAG_OK 0x00 // Indicates passage: Failure codes not yet + // available. + // Other bits undefined. +//---------------------- +// porFlags +//---------------------- + +#define POR_CPU 0x03 // These bits indicate supposed CPU type +#define POR_CPU_8 0x01 // Board uses an 80188 (no such thing yet) +#define POR_CPU_6 0x02 // Board uses an 80186 (all existing products) +#define POR_CEX4 0x04 // If set, this is an ISA-CEX/4: An ISA-4 (asic) + // which is architected like an ISA-CEX connected + // to a (hitherto impossible) 4-port box. +#define POR_BOXES 0xf0 // Valid for IntelliPort-IIEX only: Map of Box + // sizes based on box I.D. +#define POR_BOX_16 0x10 // Set indicates 16-port, clear 8-port + +//------------------------------------- +// LOADWARE and DOWNLOADING CODE +//------------------------------------- + +/* +Loadware may be sent to the board in two ways: +1) It may be read from a (binary image) data file block by block as each block + is sent to the board. This is only possible when the initialization is + performed by code which can access your file system. This is most suitable + for diagnostics and appications which use the interface library directly. + +2) It may be hard-coded into your source by including a .h file (typically + supplied by Computone), which declares a data array and initializes every + element. This achieves the same result as if an entire loadware file had + been read into the array. + + This requires more data space in your program, but access to the file system + is not required. This method is more suited to driver code, which typically + is running at a level too low to access the file system directly. + +At present, loadware can only be generated at Computone. + +All Loadware begins with a header area which has a particular format. This +includes a magic number which identifies the file as being (purportedly) +loadware, CRC (for the loader), and version information. +*/ + + +//----------------------------------------------------------------------------- +// Format of loadware block +// +// This is defined as a union so we can pass a pointer to one of these items +// and (if it is the first block) pick out the version information, etc. +// +// Otherwise, to deal with this as a simple character array +//------------------------------------------------------------------------------ + +#define LOADWARE_BLOCK_SIZE 512 // Number of bytes in each block of loadware + +typedef union _loadHdrStr +{ + unsigned char c[LOADWARE_BLOCK_SIZE]; // Valid for every block + + struct // These fields are valid for only the first block of loadware. + { + unsigned char loadMagic; // Magic number: see below + unsigned char loadBlocksMore; // How many more blocks? + unsigned char loadCRC[2]; // Two CRC bytes: used by loader + unsigned char loadVersion; // Version number + unsigned char loadRevision; // Revision number + unsigned char loadSubRevision; // Sub-revision number + unsigned char loadSpares[9]; // Presently unused + unsigned char loadDates[32]; // Null-terminated string which can give + // date and time of compilation + } e; +} loadHdrStr, *loadHdrStrPtr; + +//------------------------------------ +// Defines for downloading code: +//------------------------------------ + +// The loadMagic field in the first block of the loadfile must be this, else the +// file is not valid. +// +#define MAGIC_LOADFILE 0x3c + +// How do we know the load was successful? On completion of the load, the +// bootstrap firmware returns a code to indicate whether it thought the download +// was valid and intends to execute it. These are the only possible valid codes: +// +#define LOADWARE_OK 0xc3 // Download was ok +#define LOADWARE_BAD 0x5a // Download was bad (CRC error) + +// Constants applicable to writing blocks of loadware: +// The first block of loadware might take 600 mS to load, in extreme cases. +// (Expandable board: worst case for sending startup messages to the LCD's). +// The 600mS figure is not really a calculation, but a conservative +// guess/guarantee. Usually this will be within 100 mS, like subsequent blocks. +// +#define MAX_DLOAD_START_TIME 1000 // 1000 mS +#define MAX_DLOAD_READ_TIME 100 // 100 mS + +// Firmware should respond with status (see above) within this long of host +// having sent the final block. +// +#define MAX_DLOAD_ACK_TIME 100 // 100 mS, again! + +//------------------------------------------------------ +// MAXIMUM NUMBER OF PORTS PER BOARD: +// This is fixed for now (with the expandable), but may +// be expanding according to even newer products. +//------------------------------------------------------ +// +#define ABS_MAX_BOXES 4 // Absolute most boxes per board +#define ABS_BIGGEST_BOX 16 // Absolute the most ports per box +#define ABS_MOST_PORTS (ABS_MAX_BOXES * ABS_BIGGEST_BOX) + +#define I2_OUTSW(port, addr, count) outsw((port), (addr), (((count)+1)/2)) +#define I2_OUTSB(port, addr, count) outsb((port), (addr), (((count)+1))&-2) +#define I2_INSW(port, addr, count) insw((port), (addr), (((count)+1)/2)) +#define I2_INSB(port, addr, count) insb((port), (addr), (((count)+1))&-2) + +#endif // I2HW_H + diff --git a/drivers/staging/tty/ip2/i2lib.c b/drivers/staging/tty/ip2/i2lib.c new file mode 100644 index 000000000000..0d10b89218ed --- /dev/null +++ b/drivers/staging/tty/ip2/i2lib.c @@ -0,0 +1,2214 @@ +/******************************************************************************* +* +* (c) 1999 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport +* serial I/O controllers. +* +* DESCRIPTION: High-level interface code for the device driver. Uses the +* Extremely Low Level Interface Support (i2ellis.c). Provides an +* interface to the standard loadware, to support drivers or +* application code. (This is included source code, not a separate +* compilation module.) +* +*******************************************************************************/ +//------------------------------------------------------------------------------ +// Note on Strategy: +// Once the board has been initialized, it will interrupt us when: +// 1) It has something in the fifo for us to read (incoming data, flow control +// packets, or whatever). +// 2) It has stripped whatever we have sent last time in the FIFO (and +// consequently is ready for more). +// +// Note also that the buffer sizes declared in i2lib.h are VERY SMALL. This +// worsens performance considerably, but is done so that a great many channels +// might use only a little memory. +//------------------------------------------------------------------------------ + +//------------------------------------------------------------------------------ +// Revision History: +// +// 0.00 - 4/16/91 --- First Draft +// 0.01 - 4/29/91 --- 1st beta release +// 0.02 - 6/14/91 --- Changes to allow small model compilation +// 0.03 - 6/17/91 MAG Break reporting protected from interrupts routines with +// in-line asm added for moving data to/from ring buffers, +// replacing a variety of methods used previously. +// 0.04 - 6/21/91 MAG Initial flow-control packets not queued until +// i2_enable_interrupts time. Former versions would enqueue +// them at i2_init_channel time, before we knew how many +// channels were supposed to exist! +// 0.05 - 10/12/91 MAG Major changes: works through the ellis.c routines now; +// supports new 16-bit protocol and expandable boards. +// - 10/24/91 MAG Most changes in place and stable. +// 0.06 - 2/20/92 MAG Format of CMD_HOTACK corrected: the command takes no +// argument. +// 0.07 -- 3/11/92 MAG Support added to store special packet types at interrupt +// level (mostly responses to specific commands.) +// 0.08 -- 3/30/92 MAG Support added for STAT_MODEM packet +// 0.09 -- 6/24/93 MAG i2Link... needed to update number of boards BEFORE +// turning on the interrupt. +// 0.10 -- 6/25/93 MAG To avoid gruesome death from a bad board, we sanity check +// some incoming. +// +// 1.1 - 12/25/96 AKM Linux version. +// - 10/09/98 DMC Revised Linux version. +//------------------------------------------------------------------------------ + +//************ +//* Includes * +//************ + +#include +#include "i2lib.h" + + +//*********************** +//* Function Prototypes * +//*********************** +static void i2QueueNeeds(i2eBordStrPtr, i2ChanStrPtr, int); +static i2ChanStrPtr i2DeQueueNeeds(i2eBordStrPtr, int ); +static void i2StripFifo(i2eBordStrPtr); +static void i2StuffFifoBypass(i2eBordStrPtr); +static void i2StuffFifoFlow(i2eBordStrPtr); +static void i2StuffFifoInline(i2eBordStrPtr); +static int i2RetryFlushOutput(i2ChanStrPtr); + +// Not a documented part of the library routines (careful...) but the Diagnostic +// i2diag.c finds them useful to help the throughput in certain limited +// single-threaded operations. +static void iiSendPendingMail(i2eBordStrPtr); +static void serviceOutgoingFifo(i2eBordStrPtr); + +// Functions defined in ip2.c as part of interrupt handling +static void do_input(struct work_struct *); +static void do_status(struct work_struct *); + +//*************** +//* Debug Data * +//*************** +#ifdef DEBUG_FIFO + +unsigned char DBGBuf[0x4000]; +unsigned short I = 0; + +static void +WriteDBGBuf(char *s, unsigned char *src, unsigned short n ) +{ + char *p = src; + + // XXX: We need a spin lock here if we ever use this again + + while (*s) { // copy label + DBGBuf[I] = *s++; + I = I++ & 0x3fff; + } + while (n--) { // copy data + DBGBuf[I] = *p++; + I = I++ & 0x3fff; + } +} + +static void +fatality(i2eBordStrPtr pB ) +{ + int i; + + for (i=0;i= ' ' && DBGBuf[i] <= '~') { + printk(" %c ",DBGBuf[i]); + } else { + printk(" . "); + } + } + printk("\n"); + printk("Last index %x\n",I); +} +#endif /* DEBUG_FIFO */ + +//******** +//* Code * +//******** + +static inline int +i2Validate ( i2ChanStrPtr pCh ) +{ + //ip2trace(pCh->port_index, ITRC_VERIFY,ITRC_ENTER,2,pCh->validity, + // (CHANNEL_MAGIC | CHANNEL_SUPPORT)); + return ((pCh->validity & (CHANNEL_MAGIC_BITS | CHANNEL_SUPPORT)) + == (CHANNEL_MAGIC | CHANNEL_SUPPORT)); +} + +static void iiSendPendingMail_t(unsigned long data) +{ + i2eBordStrPtr pB = (i2eBordStrPtr)data; + + iiSendPendingMail(pB); +} + +//****************************************************************************** +// Function: iiSendPendingMail(pB) +// Parameters: Pointer to a board structure +// Returns: Nothing +// +// Description: +// If any outgoing mail bits are set and there is outgoing mailbox is empty, +// send the mail and clear the bits. +//****************************************************************************** +static void +iiSendPendingMail(i2eBordStrPtr pB) +{ + if (pB->i2eOutMailWaiting && (!pB->i2eWaitingForEmptyFifo) ) + { + if (iiTrySendMail(pB, pB->i2eOutMailWaiting)) + { + /* If we were already waiting for fifo to empty, + * or just sent MB_OUT_STUFFED, then we are + * still waiting for it to empty, until we should + * receive an MB_IN_STRIPPED from the board. + */ + pB->i2eWaitingForEmptyFifo |= + (pB->i2eOutMailWaiting & MB_OUT_STUFFED); + pB->i2eOutMailWaiting = 0; + pB->SendPendingRetry = 0; + } else { +/* The only time we hit this area is when "iiTrySendMail" has + failed. That only occurs when the outbound mailbox is + still busy with the last message. We take a short breather + to let the board catch up with itself and then try again. + 16 Retries is the limit - then we got a borked board. + /\/\|=mhw=|\/\/ */ + + if( ++pB->SendPendingRetry < 16 ) { + setup_timer(&pB->SendPendingTimer, + iiSendPendingMail_t, (unsigned long)pB); + mod_timer(&pB->SendPendingTimer, jiffies + 1); + } else { + printk( KERN_ERR "IP2: iiSendPendingMail unable to queue outbound mail\n" ); + } + } + } +} + +//****************************************************************************** +// Function: i2InitChannels(pB, nChannels, pCh) +// Parameters: Pointer to Ellis Board structure +// Number of channels to initialize +// Pointer to first element in an array of channel structures +// Returns: Success or failure +// +// Description: +// +// This function patches pointers, back-pointers, and initializes all the +// elements in the channel structure array. +// +// This should be run after the board structure is initialized, through having +// loaded the standard loadware (otherwise it complains). +// +// In any case, it must be done before any serious work begins initializing the +// irq's or sending commands... +// +//****************************************************************************** +static int +i2InitChannels ( i2eBordStrPtr pB, int nChannels, i2ChanStrPtr pCh) +{ + int index, stuffIndex; + i2ChanStrPtr *ppCh; + + if (pB->i2eValid != I2E_MAGIC) { + I2_COMPLETE(pB, I2EE_BADMAGIC); + } + if (pB->i2eState != II_STATE_STDLOADED) { + I2_COMPLETE(pB, I2EE_BADSTATE); + } + + rwlock_init(&pB->read_fifo_spinlock); + rwlock_init(&pB->write_fifo_spinlock); + rwlock_init(&pB->Dbuf_spinlock); + rwlock_init(&pB->Bbuf_spinlock); + rwlock_init(&pB->Fbuf_spinlock); + + // NO LOCK needed yet - this is init + + pB->i2eChannelPtr = pCh; + pB->i2eChannelCnt = nChannels; + + pB->i2Fbuf_strip = pB->i2Fbuf_stuff = 0; + pB->i2Dbuf_strip = pB->i2Dbuf_stuff = 0; + pB->i2Bbuf_strip = pB->i2Bbuf_stuff = 0; + + pB->SendPendingRetry = 0; + + memset ( pCh, 0, sizeof (i2ChanStr) * nChannels ); + + for (index = stuffIndex = 0, ppCh = (i2ChanStrPtr *)(pB->i2Fbuf); + nChannels && index < ABS_MOST_PORTS; + index++) + { + if ( !(pB->i2eChannelMap[index >> 4] & (1 << (index & 0xf)) ) ) { + continue; + } + rwlock_init(&pCh->Ibuf_spinlock); + rwlock_init(&pCh->Obuf_spinlock); + rwlock_init(&pCh->Cbuf_spinlock); + rwlock_init(&pCh->Pbuf_spinlock); + // NO LOCK needed yet - this is init + // Set up validity flag according to support level + if (pB->i2eGoodMap[index >> 4] & (1 << (index & 0xf)) ) { + pCh->validity = CHANNEL_MAGIC | CHANNEL_SUPPORT; + } else { + pCh->validity = CHANNEL_MAGIC; + } + pCh->pMyBord = pB; /* Back-pointer */ + + // Prepare an outgoing flow-control packet to send as soon as the chance + // occurs. + if ( pCh->validity & CHANNEL_SUPPORT ) { + pCh->infl.hd.i2sChannel = index; + pCh->infl.hd.i2sCount = 5; + pCh->infl.hd.i2sType = PTYPE_BYPASS; + pCh->infl.fcmd = 37; + pCh->infl.asof = 0; + pCh->infl.room = IBUF_SIZE - 1; + + pCh->whenSendFlow = (IBUF_SIZE/5)*4; // when 80% full + + // The following is similar to calling i2QueueNeeds, except that this + // is done in longhand, since we are setting up initial conditions on + // many channels at once. + pCh->channelNeeds = NEED_FLOW; // Since starting from scratch + pCh->sinceLastFlow = 0; // No bytes received since last flow + // control packet was queued + stuffIndex++; + *ppCh++ = pCh; // List this channel as needing + // initial flow control packet sent + } + + // Don't allow anything to be sent until the status packets come in from + // the board. + + pCh->outfl.asof = 0; + pCh->outfl.room = 0; + + // Initialize all the ring buffers + + pCh->Ibuf_stuff = pCh->Ibuf_strip = 0; + pCh->Obuf_stuff = pCh->Obuf_strip = 0; + pCh->Cbuf_stuff = pCh->Cbuf_strip = 0; + + memset( &pCh->icount, 0, sizeof (struct async_icount) ); + pCh->hotKeyIn = HOT_CLEAR; + pCh->channelOptions = 0; + pCh->bookMarks = 0; + init_waitqueue_head(&pCh->pBookmarkWait); + + init_waitqueue_head(&pCh->open_wait); + init_waitqueue_head(&pCh->close_wait); + init_waitqueue_head(&pCh->delta_msr_wait); + + // Set base and divisor so default custom rate is 9600 + pCh->BaudBase = 921600; // MAX for ST654, changed after we get + pCh->BaudDivisor = 96; // the boxids (UART types) later + + pCh->dataSetIn = 0; + pCh->dataSetOut = 0; + + pCh->wopen = 0; + pCh->throttled = 0; + + pCh->speed = CBR_9600; + + pCh->flags = 0; + + pCh->ClosingDelay = 5*HZ/10; + pCh->ClosingWaitTime = 30*HZ; + + // Initialize task queue objects + INIT_WORK(&pCh->tqueue_input, do_input); + INIT_WORK(&pCh->tqueue_status, do_status); + +#ifdef IP2DEBUG_TRACE + pCh->trace = ip2trace; +#endif + + ++pCh; + --nChannels; + } + // No need to check for wrap here; this is initialization. + pB->i2Fbuf_stuff = stuffIndex; + I2_COMPLETE(pB, I2EE_GOOD); + +} + +//****************************************************************************** +// Function: i2DeQueueNeeds(pB, type) +// Parameters: Pointer to a board structure +// type bit map: may include NEED_INLINE, NEED_BYPASS, or NEED_FLOW +// Returns: +// Pointer to a channel structure +// +// Description: Returns pointer struct of next channel that needs service of +// the type specified. Otherwise returns a NULL reference. +// +//****************************************************************************** +static i2ChanStrPtr +i2DeQueueNeeds(i2eBordStrPtr pB, int type) +{ + unsigned short queueIndex; + unsigned long flags; + + i2ChanStrPtr pCh = NULL; + + switch(type) { + + case NEED_INLINE: + + write_lock_irqsave(&pB->Dbuf_spinlock, flags); + if ( pB->i2Dbuf_stuff != pB->i2Dbuf_strip) + { + queueIndex = pB->i2Dbuf_strip; + pCh = pB->i2Dbuf[queueIndex]; + queueIndex++; + if (queueIndex >= CH_QUEUE_SIZE) { + queueIndex = 0; + } + pB->i2Dbuf_strip = queueIndex; + pCh->channelNeeds &= ~NEED_INLINE; + } + write_unlock_irqrestore(&pB->Dbuf_spinlock, flags); + break; + + case NEED_BYPASS: + + write_lock_irqsave(&pB->Bbuf_spinlock, flags); + if (pB->i2Bbuf_stuff != pB->i2Bbuf_strip) + { + queueIndex = pB->i2Bbuf_strip; + pCh = pB->i2Bbuf[queueIndex]; + queueIndex++; + if (queueIndex >= CH_QUEUE_SIZE) { + queueIndex = 0; + } + pB->i2Bbuf_strip = queueIndex; + pCh->channelNeeds &= ~NEED_BYPASS; + } + write_unlock_irqrestore(&pB->Bbuf_spinlock, flags); + break; + + case NEED_FLOW: + + write_lock_irqsave(&pB->Fbuf_spinlock, flags); + if (pB->i2Fbuf_stuff != pB->i2Fbuf_strip) + { + queueIndex = pB->i2Fbuf_strip; + pCh = pB->i2Fbuf[queueIndex]; + queueIndex++; + if (queueIndex >= CH_QUEUE_SIZE) { + queueIndex = 0; + } + pB->i2Fbuf_strip = queueIndex; + pCh->channelNeeds &= ~NEED_FLOW; + } + write_unlock_irqrestore(&pB->Fbuf_spinlock, flags); + break; + default: + printk(KERN_ERR "i2DeQueueNeeds called with bad type:%x\n",type); + break; + } + return pCh; +} + +//****************************************************************************** +// Function: i2QueueNeeds(pB, pCh, type) +// Parameters: Pointer to a board structure +// Pointer to a channel structure +// type bit map: may include NEED_INLINE, NEED_BYPASS, or NEED_FLOW +// Returns: Nothing +// +// Description: +// For each type of need selected, if the given channel is not already in the +// queue, adds it, and sets the flag indicating it is in the queue. +//****************************************************************************** +static void +i2QueueNeeds(i2eBordStrPtr pB, i2ChanStrPtr pCh, int type) +{ + unsigned short queueIndex; + unsigned long flags; + + // We turn off all the interrupts during this brief process, since the + // interrupt-level code might want to put things on the queue as well. + + switch (type) { + + case NEED_INLINE: + + write_lock_irqsave(&pB->Dbuf_spinlock, flags); + if ( !(pCh->channelNeeds & NEED_INLINE) ) + { + pCh->channelNeeds |= NEED_INLINE; + queueIndex = pB->i2Dbuf_stuff; + pB->i2Dbuf[queueIndex++] = pCh; + if (queueIndex >= CH_QUEUE_SIZE) + queueIndex = 0; + pB->i2Dbuf_stuff = queueIndex; + } + write_unlock_irqrestore(&pB->Dbuf_spinlock, flags); + break; + + case NEED_BYPASS: + + write_lock_irqsave(&pB->Bbuf_spinlock, flags); + if ((type & NEED_BYPASS) && !(pCh->channelNeeds & NEED_BYPASS)) + { + pCh->channelNeeds |= NEED_BYPASS; + queueIndex = pB->i2Bbuf_stuff; + pB->i2Bbuf[queueIndex++] = pCh; + if (queueIndex >= CH_QUEUE_SIZE) + queueIndex = 0; + pB->i2Bbuf_stuff = queueIndex; + } + write_unlock_irqrestore(&pB->Bbuf_spinlock, flags); + break; + + case NEED_FLOW: + + write_lock_irqsave(&pB->Fbuf_spinlock, flags); + if ((type & NEED_FLOW) && !(pCh->channelNeeds & NEED_FLOW)) + { + pCh->channelNeeds |= NEED_FLOW; + queueIndex = pB->i2Fbuf_stuff; + pB->i2Fbuf[queueIndex++] = pCh; + if (queueIndex >= CH_QUEUE_SIZE) + queueIndex = 0; + pB->i2Fbuf_stuff = queueIndex; + } + write_unlock_irqrestore(&pB->Fbuf_spinlock, flags); + break; + + case NEED_CREDIT: + pCh->channelNeeds |= NEED_CREDIT; + break; + default: + printk(KERN_ERR "i2QueueNeeds called with bad type:%x\n",type); + break; + } + return; +} + +//****************************************************************************** +// Function: i2QueueCommands(type, pCh, timeout, nCommands, pCs,...) +// Parameters: type - PTYPE_BYPASS or PTYPE_INLINE +// pointer to the channel structure +// maximum period to wait +// number of commands (n) +// n commands +// Returns: Number of commands sent, or -1 for error +// +// get board lock before calling +// +// Description: +// Queues up some commands to be sent to a channel. To send possibly several +// bypass or inline commands to the given channel. The timeout parameter +// indicates how many HUNDREDTHS OF SECONDS to wait until there is room: +// 0 = return immediately if no room, -ive = wait forever, +ive = number of +// 1/100 seconds to wait. Return values: +// -1 Some kind of nasty error: bad channel structure or invalid arguments. +// 0 No room to send all the commands +// (+) Number of commands sent +//****************************************************************************** +static int +i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands, + cmdSyntaxPtr pCs0,...) +{ + int totalsize = 0; + int blocksize; + int lastended; + cmdSyntaxPtr *ppCs; + cmdSyntaxPtr pCs; + int count; + int flag; + i2eBordStrPtr pB; + + unsigned short maxBlock; + unsigned short maxBuff; + short bufroom; + unsigned short stuffIndex; + unsigned char *pBuf; + unsigned char *pInsert; + unsigned char *pDest, *pSource; + unsigned short channel; + int cnt; + unsigned long flags = 0; + rwlock_t *lock_var_p = NULL; + + // Make sure the channel exists, otherwise do nothing + if ( !i2Validate ( pCh ) ) { + return -1; + } + + ip2trace (CHANN, ITRC_QUEUE, ITRC_ENTER, 0 ); + + pB = pCh->pMyBord; + + // Board must also exist, and THE INTERRUPT COMMAND ALREADY SENT + if (pB->i2eValid != I2E_MAGIC || pB->i2eUsingIrq == I2_IRQ_UNDEFINED) + return -2; + // If the board has gone fatal, return bad, and also hit the trap routine if + // it exists. + if (pB->i2eFatal) { + if ( pB->i2eFatalTrap ) { + (*(pB)->i2eFatalTrap)(pB); + } + return -3; + } + // Set up some variables, Which buffers are we using? How big are they? + switch(type) + { + case PTYPE_INLINE: + flag = INL; + maxBlock = MAX_OBUF_BLOCK; + maxBuff = OBUF_SIZE; + pBuf = pCh->Obuf; + break; + case PTYPE_BYPASS: + flag = BYP; + maxBlock = MAX_CBUF_BLOCK; + maxBuff = CBUF_SIZE; + pBuf = pCh->Cbuf; + break; + default: + return -4; + } + // Determine the total size required for all the commands + totalsize = blocksize = sizeof(i2CmdHeader); + lastended = 0; + ppCs = &pCs0; + for ( count = nCommands; count; count--, ppCs++) + { + pCs = *ppCs; + cnt = pCs->length; + // Will a new block be needed for this one? + // Two possible reasons: too + // big or previous command has to be at the end of a packet. + if ((blocksize + cnt > maxBlock) || lastended) { + blocksize = sizeof(i2CmdHeader); + totalsize += sizeof(i2CmdHeader); + } + totalsize += cnt; + blocksize += cnt; + + // If this command had to end a block, then we will make sure to + // account for it should there be any more blocks. + lastended = pCs->flags & END; + } + for (;;) { + // Make sure any pending flush commands go out before we add more data. + if ( !( pCh->flush_flags && i2RetryFlushOutput( pCh ) ) ) { + // How much room (this time through) ? + switch(type) { + case PTYPE_INLINE: + lock_var_p = &pCh->Obuf_spinlock; + write_lock_irqsave(lock_var_p, flags); + stuffIndex = pCh->Obuf_stuff; + bufroom = pCh->Obuf_strip - stuffIndex; + break; + case PTYPE_BYPASS: + lock_var_p = &pCh->Cbuf_spinlock; + write_lock_irqsave(lock_var_p, flags); + stuffIndex = pCh->Cbuf_stuff; + bufroom = pCh->Cbuf_strip - stuffIndex; + break; + default: + return -5; + } + if (--bufroom < 0) { + bufroom += maxBuff; + } + + ip2trace (CHANN, ITRC_QUEUE, 2, 1, bufroom ); + + // Check for overflow + if (totalsize <= bufroom) { + // Normal Expected path - We still hold LOCK + break; /* from for()- Enough room: goto proceed */ + } + ip2trace(CHANN, ITRC_QUEUE, 3, 1, totalsize); + write_unlock_irqrestore(lock_var_p, flags); + } else + ip2trace(CHANN, ITRC_QUEUE, 3, 1, totalsize); + + /* Prepare to wait for buffers to empty */ + serviceOutgoingFifo(pB); // Dump what we got + + if (timeout == 0) { + return 0; // Tired of waiting + } + if (timeout > 0) + timeout--; // So negative values == forever + + if (!in_interrupt()) { + schedule_timeout_interruptible(1); // short nap + } else { + // we cannot sched/sleep in interrupt silly + return 0; + } + if (signal_pending(current)) { + return 0; // Wake up! Time to die!!! + } + + ip2trace (CHANN, ITRC_QUEUE, 4, 0 ); + + } // end of for(;;) + + // At this point we have room and the lock - stick them in. + channel = pCh->infl.hd.i2sChannel; + pInsert = &pBuf[stuffIndex]; // Pointer to start of packet + pDest = CMD_OF(pInsert); // Pointer to start of command + + // When we start counting, the block is the size of the header + for (blocksize = sizeof(i2CmdHeader), count = nCommands, + lastended = 0, ppCs = &pCs0; + count; + count--, ppCs++) + { + pCs = *ppCs; // Points to command protocol structure + + // If this is a bookmark request command, post the fact that a bookmark + // request is pending. NOTE THIS TRICK ONLY WORKS BECAUSE CMD_BMARK_REQ + // has no parameters! The more general solution would be to reference + // pCs->cmd[0]. + if (pCs == CMD_BMARK_REQ) { + pCh->bookMarks++; + + ip2trace (CHANN, ITRC_DRAIN, 30, 1, pCh->bookMarks ); + + } + cnt = pCs->length; + + // If this command would put us over the maximum block size or + // if the last command had to be at the end of a block, we end + // the existing block here and start a new one. + if ((blocksize + cnt > maxBlock) || lastended) { + + ip2trace (CHANN, ITRC_QUEUE, 5, 0 ); + + PTYPE_OF(pInsert) = type; + CHANNEL_OF(pInsert) = channel; + // count here does not include the header + CMD_COUNT_OF(pInsert) = blocksize - sizeof(i2CmdHeader); + stuffIndex += blocksize; + if(stuffIndex >= maxBuff) { + stuffIndex = 0; + pInsert = pBuf; + } + pInsert = &pBuf[stuffIndex]; // Pointer to start of next pkt + pDest = CMD_OF(pInsert); + blocksize = sizeof(i2CmdHeader); + } + // Now we know there is room for this one in the current block + + blocksize += cnt; // Total bytes in this command + pSource = pCs->cmd; // Copy the command into the buffer + while (cnt--) { + *pDest++ = *pSource++; + } + // If this command had to end a block, then we will make sure to account + // for it should there be any more blocks. + lastended = pCs->flags & END; + } // end for + // Clean up the final block by writing header, etc + + PTYPE_OF(pInsert) = type; + CHANNEL_OF(pInsert) = channel; + // count here does not include the header + CMD_COUNT_OF(pInsert) = blocksize - sizeof(i2CmdHeader); + stuffIndex += blocksize; + if(stuffIndex >= maxBuff) { + stuffIndex = 0; + pInsert = pBuf; + } + // Updates the index, and post the need for service. When adding these to + // the queue of channels, we turn off the interrupt while doing so, + // because at interrupt level we might want to push a channel back to the + // end of the queue. + switch(type) + { + case PTYPE_INLINE: + pCh->Obuf_stuff = stuffIndex; // Store buffer pointer + write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); + + pB->debugInlineQueued++; + // Add the channel pointer to list of channels needing service (first + // come...), if it's not already there. + i2QueueNeeds(pB, pCh, NEED_INLINE); + break; + + case PTYPE_BYPASS: + pCh->Cbuf_stuff = stuffIndex; // Store buffer pointer + write_unlock_irqrestore(&pCh->Cbuf_spinlock, flags); + + pB->debugBypassQueued++; + // Add the channel pointer to list of channels needing service (first + // come...), if it's not already there. + i2QueueNeeds(pB, pCh, NEED_BYPASS); + break; + } + + ip2trace (CHANN, ITRC_QUEUE, ITRC_RETURN, 1, nCommands ); + + return nCommands; // Good status: number of commands sent +} + +//****************************************************************************** +// Function: i2GetStatus(pCh,resetBits) +// Parameters: Pointer to a channel structure +// Bit map of status bits to clear +// Returns: Bit map of current status bits +// +// Description: +// Returns the state of data set signals, and whether a break has been received, +// (see i2lib.h for bit-mapped result). resetBits is a bit-map of any status +// bits to be cleared: I2_BRK, I2_PAR, I2_FRA, I2_OVR,... These are cleared +// AFTER the condition is passed. If pCh does not point to a valid channel, +// returns -1 (which would be impossible otherwise. +//****************************************************************************** +static int +i2GetStatus(i2ChanStrPtr pCh, int resetBits) +{ + unsigned short status; + i2eBordStrPtr pB; + + ip2trace (CHANN, ITRC_STATUS, ITRC_ENTER, 2, pCh->dataSetIn, resetBits ); + + // Make sure the channel exists, otherwise do nothing */ + if ( !i2Validate ( pCh ) ) + return -1; + + pB = pCh->pMyBord; + + status = pCh->dataSetIn; + + // Clear any specified error bits: but note that only actual error bits can + // be cleared, regardless of the value passed. + if (resetBits) + { + pCh->dataSetIn &= ~(resetBits & (I2_BRK | I2_PAR | I2_FRA | I2_OVR)); + pCh->dataSetIn &= ~(I2_DDCD | I2_DCTS | I2_DDSR | I2_DRI); + } + + ip2trace (CHANN, ITRC_STATUS, ITRC_RETURN, 1, pCh->dataSetIn ); + + return status; +} + +//****************************************************************************** +// Function: i2Input(pChpDest,count) +// Parameters: Pointer to a channel structure +// Pointer to data buffer +// Number of bytes to read +// Returns: Number of bytes read, or -1 for error +// +// Description: +// Strips data from the input buffer and writes it to pDest. If there is a +// collosal blunder, (invalid structure pointers or the like), returns -1. +// Otherwise, returns the number of bytes read. +//****************************************************************************** +static int +i2Input(i2ChanStrPtr pCh) +{ + int amountToMove; + unsigned short stripIndex; + int count; + unsigned long flags = 0; + + ip2trace (CHANN, ITRC_INPUT, ITRC_ENTER, 0); + + // Ensure channel structure seems real + if ( !i2Validate( pCh ) ) { + count = -1; + goto i2Input_exit; + } + write_lock_irqsave(&pCh->Ibuf_spinlock, flags); + + // initialize some accelerators and private copies + stripIndex = pCh->Ibuf_strip; + + count = pCh->Ibuf_stuff - stripIndex; + + // If buffer is empty or requested data count was 0, (trivial case) return + // without any further thought. + if ( count == 0 ) { + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + goto i2Input_exit; + } + // Adjust for buffer wrap + if ( count < 0 ) { + count += IBUF_SIZE; + } + // Don't give more than can be taken by the line discipline + amountToMove = pCh->pTTY->receive_room; + if (count > amountToMove) { + count = amountToMove; + } + // How much could we copy without a wrap? + amountToMove = IBUF_SIZE - stripIndex; + + if (amountToMove > count) { + amountToMove = count; + } + // Move the first block + pCh->pTTY->ldisc->ops->receive_buf( pCh->pTTY, + &(pCh->Ibuf[stripIndex]), NULL, amountToMove ); + // If we needed to wrap, do the second data move + if (count > amountToMove) { + pCh->pTTY->ldisc->ops->receive_buf( pCh->pTTY, + pCh->Ibuf, NULL, count - amountToMove ); + } + // Bump and wrap the stripIndex all at once by the amount of data read. This + // method is good regardless of whether the data was in one or two pieces. + stripIndex += count; + if (stripIndex >= IBUF_SIZE) { + stripIndex -= IBUF_SIZE; + } + pCh->Ibuf_strip = stripIndex; + + // Update our flow control information and possibly queue ourselves to send + // it, depending on how much data has been stripped since the last time a + // packet was sent. + pCh->infl.asof += count; + + if ((pCh->sinceLastFlow += count) >= pCh->whenSendFlow) { + pCh->sinceLastFlow -= pCh->whenSendFlow; + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + i2QueueNeeds(pCh->pMyBord, pCh, NEED_FLOW); + } else { + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + } + +i2Input_exit: + + ip2trace (CHANN, ITRC_INPUT, ITRC_RETURN, 1, count); + + return count; +} + +//****************************************************************************** +// Function: i2InputFlush(pCh) +// Parameters: Pointer to a channel structure +// Returns: Number of bytes stripped, or -1 for error +// +// Description: +// Strips any data from the input buffer. If there is a collosal blunder, +// (invalid structure pointers or the like), returns -1. Otherwise, returns the +// number of bytes stripped. +//****************************************************************************** +static int +i2InputFlush(i2ChanStrPtr pCh) +{ + int count; + unsigned long flags; + + // Ensure channel structure seems real + if ( !i2Validate ( pCh ) ) + return -1; + + ip2trace (CHANN, ITRC_INPUT, 10, 0); + + write_lock_irqsave(&pCh->Ibuf_spinlock, flags); + count = pCh->Ibuf_stuff - pCh->Ibuf_strip; + + // Adjust for buffer wrap + if (count < 0) { + count += IBUF_SIZE; + } + + // Expedient way to zero out the buffer + pCh->Ibuf_strip = pCh->Ibuf_stuff; + + + // Update our flow control information and possibly queue ourselves to send + // it, depending on how much data has been stripped since the last time a + // packet was sent. + + pCh->infl.asof += count; + + if ( (pCh->sinceLastFlow += count) >= pCh->whenSendFlow ) + { + pCh->sinceLastFlow -= pCh->whenSendFlow; + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + i2QueueNeeds(pCh->pMyBord, pCh, NEED_FLOW); + } else { + write_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + } + + ip2trace (CHANN, ITRC_INPUT, 19, 1, count); + + return count; +} + +//****************************************************************************** +// Function: i2InputAvailable(pCh) +// Parameters: Pointer to a channel structure +// Returns: Number of bytes available, or -1 for error +// +// Description: +// If there is a collosal blunder, (invalid structure pointers or the like), +// returns -1. Otherwise, returns the number of bytes stripped. Otherwise, +// returns the number of bytes available in the buffer. +//****************************************************************************** +#if 0 +static int +i2InputAvailable(i2ChanStrPtr pCh) +{ + int count; + + // Ensure channel structure seems real + if ( !i2Validate ( pCh ) ) return -1; + + + // initialize some accelerators and private copies + read_lock_irqsave(&pCh->Ibuf_spinlock, flags); + count = pCh->Ibuf_stuff - pCh->Ibuf_strip; + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + + // Adjust for buffer wrap + if (count < 0) + { + count += IBUF_SIZE; + } + + return count; +} +#endif + +//****************************************************************************** +// Function: i2Output(pCh, pSource, count) +// Parameters: Pointer to channel structure +// Pointer to source data +// Number of bytes to send +// Returns: Number of bytes sent, or -1 for error +// +// Description: +// Queues the data at pSource to be sent as data packets to the board. If there +// is a collosal blunder, (invalid structure pointers or the like), returns -1. +// Otherwise, returns the number of bytes written. What if there is not enough +// room for all the data? If pCh->channelOptions & CO_NBLOCK_WRITE is set, then +// we transfer as many characters as we can now, then return. If this bit is +// clear (default), routine will spin along until all the data is buffered. +// Should this occur, the 1-ms delay routine is called while waiting to avoid +// applications that one cannot break out of. +//****************************************************************************** +static int +i2Output(i2ChanStrPtr pCh, const char *pSource, int count) +{ + i2eBordStrPtr pB; + unsigned char *pInsert; + int amountToMove; + int countOriginal = count; + unsigned short channel; + unsigned short stuffIndex; + unsigned long flags; + + int bailout = 10; + + ip2trace (CHANN, ITRC_OUTPUT, ITRC_ENTER, 2, count, 0 ); + + // Ensure channel structure seems real + if ( !i2Validate ( pCh ) ) + return -1; + + // initialize some accelerators and private copies + pB = pCh->pMyBord; + channel = pCh->infl.hd.i2sChannel; + + // If the board has gone fatal, return bad, and also hit the trap routine if + // it exists. + if (pB->i2eFatal) { + if (pB->i2eFatalTrap) { + (*(pB)->i2eFatalTrap)(pB); + } + return -1; + } + // Proceed as though we would do everything + while ( count > 0 ) { + + // How much room in output buffer is there? + read_lock_irqsave(&pCh->Obuf_spinlock, flags); + amountToMove = pCh->Obuf_strip - pCh->Obuf_stuff - 1; + read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); + if (amountToMove < 0) { + amountToMove += OBUF_SIZE; + } + // Subtract off the headers size and see how much room there is for real + // data. If this is negative, we will discover later. + amountToMove -= sizeof (i2DataHeader); + + // Don't move more (now) than can go in a single packet + if ( amountToMove > (int)(MAX_OBUF_BLOCK - sizeof(i2DataHeader)) ) { + amountToMove = MAX_OBUF_BLOCK - sizeof(i2DataHeader); + } + // Don't move more than the count we were given + if (amountToMove > count) { + amountToMove = count; + } + // Now we know how much we must move: NB because the ring buffers have + // an overflow area at the end, we needn't worry about wrapping in the + // middle of a packet. + +// Small WINDOW here with no LOCK but I can't call Flush with LOCK +// We would be flushing (or ending flush) anyway + + ip2trace (CHANN, ITRC_OUTPUT, 10, 1, amountToMove ); + + if ( !(pCh->flush_flags && i2RetryFlushOutput(pCh) ) + && amountToMove > 0 ) + { + write_lock_irqsave(&pCh->Obuf_spinlock, flags); + stuffIndex = pCh->Obuf_stuff; + + // Had room to move some data: don't know whether the block size, + // buffer space, or what was the limiting factor... + pInsert = &(pCh->Obuf[stuffIndex]); + + // Set up the header + CHANNEL_OF(pInsert) = channel; + PTYPE_OF(pInsert) = PTYPE_DATA; + TAG_OF(pInsert) = 0; + ID_OF(pInsert) = ID_ORDINARY_DATA; + DATA_COUNT_OF(pInsert) = amountToMove; + + // Move the data + memcpy( (char*)(DATA_OF(pInsert)), pSource, amountToMove ); + // Adjust pointers and indices + pSource += amountToMove; + pCh->Obuf_char_count += amountToMove; + stuffIndex += amountToMove + sizeof(i2DataHeader); + count -= amountToMove; + + if (stuffIndex >= OBUF_SIZE) { + stuffIndex = 0; + } + pCh->Obuf_stuff = stuffIndex; + + write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); + + ip2trace (CHANN, ITRC_OUTPUT, 13, 1, stuffIndex ); + + } else { + + // Cannot move data + // becuz we need to stuff a flush + // or amount to move is <= 0 + + ip2trace(CHANN, ITRC_OUTPUT, 14, 3, + amountToMove, pB->i2eFifoRemains, + pB->i2eWaitingForEmptyFifo ); + + // Put this channel back on queue + // this ultimatly gets more data or wakes write output + i2QueueNeeds(pB, pCh, NEED_INLINE); + + if ( pB->i2eWaitingForEmptyFifo ) { + + ip2trace (CHANN, ITRC_OUTPUT, 16, 0 ); + + // or schedule + if (!in_interrupt()) { + + ip2trace (CHANN, ITRC_OUTPUT, 61, 0 ); + + schedule_timeout_interruptible(2); + if (signal_pending(current)) { + break; + } + continue; + } else { + + ip2trace (CHANN, ITRC_OUTPUT, 62, 0 ); + + // let interrupt in = WAS restore_flags() + // We hold no lock nor is irq off anymore??? + + break; + } + break; // from while(count) + } + else if ( pB->i2eFifoRemains < 32 && !pB->i2eTxMailEmpty ( pB ) ) + { + ip2trace (CHANN, ITRC_OUTPUT, 19, 2, + pB->i2eFifoRemains, + pB->i2eTxMailEmpty ); + + break; // from while(count) + } else if ( pCh->channelNeeds & NEED_CREDIT ) { + + ip2trace (CHANN, ITRC_OUTPUT, 22, 0 ); + + break; // from while(count) + } else if ( --bailout) { + + // Try to throw more things (maybe not us) in the fifo if we're + // not already waiting for it. + + ip2trace (CHANN, ITRC_OUTPUT, 20, 0 ); + + serviceOutgoingFifo(pB); + //break; CONTINUE; + } else { + ip2trace (CHANN, ITRC_OUTPUT, 21, 3, + pB->i2eFifoRemains, + pB->i2eOutMailWaiting, + pB->i2eWaitingForEmptyFifo ); + + break; // from while(count) + } + } + } // End of while(count) + + i2QueueNeeds(pB, pCh, NEED_INLINE); + + // We drop through either when the count expires, or when there is some + // count left, but there was a non-blocking write. + if (countOriginal > count) { + + ip2trace (CHANN, ITRC_OUTPUT, 17, 2, countOriginal, count ); + + serviceOutgoingFifo( pB ); + } + + ip2trace (CHANN, ITRC_OUTPUT, ITRC_RETURN, 2, countOriginal, count ); + + return countOriginal - count; +} + +//****************************************************************************** +// Function: i2FlushOutput(pCh) +// Parameters: Pointer to a channel structure +// Returns: Nothing +// +// Description: +// Sends bypass command to start flushing (waiting possibly forever until there +// is room), then sends inline command to stop flushing output, (again waiting +// possibly forever). +//****************************************************************************** +static inline void +i2FlushOutput(i2ChanStrPtr pCh) +{ + + ip2trace (CHANN, ITRC_FLUSH, 1, 1, pCh->flush_flags ); + + if (pCh->flush_flags) + return; + + if ( 1 != i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_STARTFL) ) { + pCh->flush_flags = STARTFL_FLAG; // Failed - flag for later + + ip2trace (CHANN, ITRC_FLUSH, 2, 0 ); + + } else if ( 1 != i2QueueCommands(PTYPE_INLINE, pCh, 0, 1, CMD_STOPFL) ) { + pCh->flush_flags = STOPFL_FLAG; // Failed - flag for later + + ip2trace (CHANN, ITRC_FLUSH, 3, 0 ); + } +} + +static int +i2RetryFlushOutput(i2ChanStrPtr pCh) +{ + int old_flags = pCh->flush_flags; + + ip2trace (CHANN, ITRC_FLUSH, 14, 1, old_flags ); + + pCh->flush_flags = 0; // Clear flag so we can avoid recursion + // and queue the commands + + if ( old_flags & STARTFL_FLAG ) { + if ( 1 == i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_STARTFL) ) { + old_flags = STOPFL_FLAG; //Success - send stop flush + } else { + old_flags = STARTFL_FLAG; //Failure - Flag for retry later + } + + ip2trace (CHANN, ITRC_FLUSH, 15, 1, old_flags ); + + } + if ( old_flags & STOPFL_FLAG ) { + if (1 == i2QueueCommands(PTYPE_INLINE, pCh, 0, 1, CMD_STOPFL)) { + old_flags = 0; // Success - clear flags + } + + ip2trace (CHANN, ITRC_FLUSH, 16, 1, old_flags ); + } + pCh->flush_flags = old_flags; + + ip2trace (CHANN, ITRC_FLUSH, 17, 1, old_flags ); + + return old_flags; +} + +//****************************************************************************** +// Function: i2DrainOutput(pCh,timeout) +// Parameters: Pointer to a channel structure +// Maximum period to wait +// Returns: ? +// +// Description: +// Uses the bookmark request command to ask the board to send a bookmark back as +// soon as all the data is completely sent. +//****************************************************************************** +static void +i2DrainWakeup(unsigned long d) +{ + i2ChanStrPtr pCh = (i2ChanStrPtr)d; + + ip2trace (CHANN, ITRC_DRAIN, 10, 1, pCh->BookmarkTimer.expires ); + + pCh->BookmarkTimer.expires = 0; + wake_up_interruptible( &pCh->pBookmarkWait ); +} + +static void +i2DrainOutput(i2ChanStrPtr pCh, int timeout) +{ + wait_queue_t wait; + i2eBordStrPtr pB; + + ip2trace (CHANN, ITRC_DRAIN, ITRC_ENTER, 1, pCh->BookmarkTimer.expires); + + pB = pCh->pMyBord; + // If the board has gone fatal, return bad, + // and also hit the trap routine if it exists. + if (pB->i2eFatal) { + if (pB->i2eFatalTrap) { + (*(pB)->i2eFatalTrap)(pB); + } + return; + } + if ((timeout > 0) && (pCh->BookmarkTimer.expires == 0 )) { + // One per customer (channel) + setup_timer(&pCh->BookmarkTimer, i2DrainWakeup, + (unsigned long)pCh); + + ip2trace (CHANN, ITRC_DRAIN, 1, 1, pCh->BookmarkTimer.expires ); + + mod_timer(&pCh->BookmarkTimer, jiffies + timeout); + } + + i2QueueCommands( PTYPE_INLINE, pCh, -1, 1, CMD_BMARK_REQ ); + + init_waitqueue_entry(&wait, current); + add_wait_queue(&(pCh->pBookmarkWait), &wait); + set_current_state( TASK_INTERRUPTIBLE ); + + serviceOutgoingFifo( pB ); + + schedule(); // Now we take our interruptible sleep on + + // Clean up the queue + set_current_state( TASK_RUNNING ); + remove_wait_queue(&(pCh->pBookmarkWait), &wait); + + // if expires == 0 then timer poped, then do not need to del_timer + if ((timeout > 0) && pCh->BookmarkTimer.expires && + time_before(jiffies, pCh->BookmarkTimer.expires)) { + del_timer( &(pCh->BookmarkTimer) ); + pCh->BookmarkTimer.expires = 0; + + ip2trace (CHANN, ITRC_DRAIN, 3, 1, pCh->BookmarkTimer.expires ); + + } + ip2trace (CHANN, ITRC_DRAIN, ITRC_RETURN, 1, pCh->BookmarkTimer.expires ); + return; +} + +//****************************************************************************** +// Function: i2OutputFree(pCh) +// Parameters: Pointer to a channel structure +// Returns: Space in output buffer +// +// Description: +// Returns -1 if very gross error. Otherwise returns the amount of bytes still +// free in the output buffer. +//****************************************************************************** +static int +i2OutputFree(i2ChanStrPtr pCh) +{ + int amountToMove; + unsigned long flags; + + // Ensure channel structure seems real + if ( !i2Validate ( pCh ) ) { + return -1; + } + read_lock_irqsave(&pCh->Obuf_spinlock, flags); + amountToMove = pCh->Obuf_strip - pCh->Obuf_stuff - 1; + read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); + + if (amountToMove < 0) { + amountToMove += OBUF_SIZE; + } + // If this is negative, we will discover later + amountToMove -= sizeof(i2DataHeader); + + return (amountToMove < 0) ? 0 : amountToMove; +} +static void + +ip2_owake( PTTY tp) +{ + i2ChanStrPtr pCh; + + if (tp == NULL) return; + + pCh = tp->driver_data; + + ip2trace (CHANN, ITRC_SICMD, 10, 2, tp->flags, + (1 << TTY_DO_WRITE_WAKEUP) ); + + tty_wakeup(tp); +} + +static inline void +set_baud_params(i2eBordStrPtr pB) +{ + int i,j; + i2ChanStrPtr *pCh; + + pCh = (i2ChanStrPtr *) pB->i2eChannelPtr; + + for (i = 0; i < ABS_MAX_BOXES; i++) { + if (pB->channelBtypes.bid_value[i]) { + if (BID_HAS_654(pB->channelBtypes.bid_value[i])) { + for (j = 0; j < ABS_BIGGEST_BOX; j++) { + if (pCh[i*16+j] == NULL) + break; + (pCh[i*16+j])->BaudBase = 921600; // MAX for ST654 + (pCh[i*16+j])->BaudDivisor = 96; + } + } else { // has cirrus cd1400 + for (j = 0; j < ABS_BIGGEST_BOX; j++) { + if (pCh[i*16+j] == NULL) + break; + (pCh[i*16+j])->BaudBase = 115200; // MAX for CD1400 + (pCh[i*16+j])->BaudDivisor = 12; + } + } + } + } +} + +//****************************************************************************** +// Function: i2StripFifo(pB) +// Parameters: Pointer to a board structure +// Returns: ? +// +// Description: +// Strips all the available data from the incoming FIFO, identifies the type of +// packet, and either buffers the data or does what needs to be done. +// +// Note there is no overflow checking here: if the board sends more data than it +// ought to, we will not detect it here, but blindly overflow... +//****************************************************************************** + +// A buffer for reading in blocks for unknown channels +static unsigned char junkBuffer[IBUF_SIZE]; + +// A buffer to read in a status packet. Because of the size of the count field +// for these things, the maximum packet size must be less than MAX_CMD_PACK_SIZE +static unsigned char cmdBuffer[MAX_CMD_PACK_SIZE + 4]; + +// This table changes the bit order from MSR order given by STAT_MODEM packet to +// status bits used in our library. +static char xlatDss[16] = { +0 | 0 | 0 | 0 , +0 | 0 | 0 | I2_CTS , +0 | 0 | I2_DSR | 0 , +0 | 0 | I2_DSR | I2_CTS , +0 | I2_RI | 0 | 0 , +0 | I2_RI | 0 | I2_CTS , +0 | I2_RI | I2_DSR | 0 , +0 | I2_RI | I2_DSR | I2_CTS , +I2_DCD | 0 | 0 | 0 , +I2_DCD | 0 | 0 | I2_CTS , +I2_DCD | 0 | I2_DSR | 0 , +I2_DCD | 0 | I2_DSR | I2_CTS , +I2_DCD | I2_RI | 0 | 0 , +I2_DCD | I2_RI | 0 | I2_CTS , +I2_DCD | I2_RI | I2_DSR | 0 , +I2_DCD | I2_RI | I2_DSR | I2_CTS }; + +static inline void +i2StripFifo(i2eBordStrPtr pB) +{ + i2ChanStrPtr pCh; + int channel; + int count; + unsigned short stuffIndex; + int amountToRead; + unsigned char *pc, *pcLimit; + unsigned char uc; + unsigned char dss_change; + unsigned long bflags,cflags; + +// ip2trace (ITRC_NO_PORT, ITRC_SFIFO, ITRC_ENTER, 0 ); + + while (I2_HAS_INPUT(pB)) { +// ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 2, 0 ); + + // Process packet from fifo a one atomic unit + write_lock_irqsave(&pB->read_fifo_spinlock, bflags); + + // The first word (or two bytes) will have channel number and type of + // packet, possibly other information + pB->i2eLeadoffWord[0] = iiReadWord(pB); + + switch(PTYPE_OF(pB->i2eLeadoffWord)) + { + case PTYPE_DATA: + pB->got_input = 1; + +// ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 3, 0 ); + + channel = CHANNEL_OF(pB->i2eLeadoffWord); /* Store channel */ + count = iiReadWord(pB); /* Count is in the next word */ + +// NEW: Check the count for sanity! Should the hardware fail, our death +// is more pleasant. While an oversize channel is acceptable (just more +// than the driver supports), an over-length count clearly means we are +// sick! + if ( ((unsigned int)count) > IBUF_SIZE ) { + pB->i2eFatal = 2; + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); + return; /* Bail out ASAP */ + } + // Channel is illegally big ? + if ((channel >= pB->i2eChannelCnt) || + (NULL==(pCh = ((i2ChanStrPtr*)pB->i2eChannelPtr)[channel]))) + { + iiReadBuf(pB, junkBuffer, count); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); + break; /* From switch: ready for next packet */ + } + + // Channel should be valid, then + + // If this is a hot-key, merely post its receipt for now. These are + // always supposed to be 1-byte packets, so we won't even check the + // count. Also we will post an acknowledgement to the board so that + // more data can be forthcoming. Note that we are not trying to use + // these sequences in this driver, merely to robustly ignore them. + if(ID_OF(pB->i2eLeadoffWord) == ID_HOT_KEY) + { + pCh->hotKeyIn = iiReadWord(pB) & 0xff; + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); + i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_HOTACK); + break; /* From the switch: ready for next packet */ + } + + // Normal data! We crudely assume there is room for the data in our + // buffer because the board wouldn't have exceeded his credit limit. + write_lock_irqsave(&pCh->Ibuf_spinlock, cflags); + // We have 2 locks now + stuffIndex = pCh->Ibuf_stuff; + amountToRead = IBUF_SIZE - stuffIndex; + if (amountToRead > count) + amountToRead = count; + + // stuffIndex would have been already adjusted so there would + // always be room for at least one, and count is always at least + // one. + + iiReadBuf(pB, &(pCh->Ibuf[stuffIndex]), amountToRead); + pCh->icount.rx += amountToRead; + + // Update the stuffIndex by the amount of data moved. Note we could + // never ask for more data than would just fit. However, we might + // have read in one more byte than we wanted because the read + // rounds up to even bytes. If this byte is on the end of the + // packet, and is padding, we ignore it. If the byte is part of + // the actual data, we need to move it. + + stuffIndex += amountToRead; + + if (stuffIndex >= IBUF_SIZE) { + if ((amountToRead & 1) && (count > amountToRead)) { + pCh->Ibuf[0] = pCh->Ibuf[IBUF_SIZE]; + amountToRead++; + stuffIndex = 1; + } else { + stuffIndex = 0; + } + } + + // If there is anything left over, read it as well + if (count > amountToRead) { + amountToRead = count - amountToRead; + iiReadBuf(pB, &(pCh->Ibuf[stuffIndex]), amountToRead); + pCh->icount.rx += amountToRead; + stuffIndex += amountToRead; + } + + // Update stuff index + pCh->Ibuf_stuff = stuffIndex; + write_unlock_irqrestore(&pCh->Ibuf_spinlock, cflags); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); + +#ifdef USE_IQ + schedule_work(&pCh->tqueue_input); +#else + do_input(&pCh->tqueue_input); +#endif + + // Note we do not need to maintain any flow-control credits at this + // time: if we were to increment .asof and decrement .room, there + // would be no net effect. Instead, when we strip data, we will + // increment .asof and leave .room unchanged. + + break; // From switch: ready for next packet + + case PTYPE_STATUS: + ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 4, 0 ); + + count = CMD_COUNT_OF(pB->i2eLeadoffWord); + + iiReadBuf(pB, cmdBuffer, count); + // We can release early with buffer grab + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); + + pc = cmdBuffer; + pcLimit = &(cmdBuffer[count]); + + while (pc < pcLimit) { + channel = *pc++; + + ip2trace (channel, ITRC_SFIFO, 7, 2, channel, *pc ); + + /* check for valid channel */ + if (channel < pB->i2eChannelCnt + && + (pCh = (((i2ChanStrPtr*)pB->i2eChannelPtr)[channel])) != NULL + ) + { + dss_change = 0; + + switch (uc = *pc++) + { + /* Breaks and modem signals are easy: just update status */ + case STAT_CTS_UP: + if ( !(pCh->dataSetIn & I2_CTS) ) + { + pCh->dataSetIn |= I2_DCTS; + pCh->icount.cts++; + dss_change = 1; + } + pCh->dataSetIn |= I2_CTS; + break; + + case STAT_CTS_DN: + if ( pCh->dataSetIn & I2_CTS ) + { + pCh->dataSetIn |= I2_DCTS; + pCh->icount.cts++; + dss_change = 1; + } + pCh->dataSetIn &= ~I2_CTS; + break; + + case STAT_DCD_UP: + ip2trace (channel, ITRC_MODEM, 1, 1, pCh->dataSetIn ); + + if ( !(pCh->dataSetIn & I2_DCD) ) + { + ip2trace (CHANN, ITRC_MODEM, 2, 0 ); + pCh->dataSetIn |= I2_DDCD; + pCh->icount.dcd++; + dss_change = 1; + } + pCh->dataSetIn |= I2_DCD; + + ip2trace (channel, ITRC_MODEM, 3, 1, pCh->dataSetIn ); + break; + + case STAT_DCD_DN: + ip2trace (channel, ITRC_MODEM, 4, 1, pCh->dataSetIn ); + if ( pCh->dataSetIn & I2_DCD ) + { + ip2trace (channel, ITRC_MODEM, 5, 0 ); + pCh->dataSetIn |= I2_DDCD; + pCh->icount.dcd++; + dss_change = 1; + } + pCh->dataSetIn &= ~I2_DCD; + + ip2trace (channel, ITRC_MODEM, 6, 1, pCh->dataSetIn ); + break; + + case STAT_DSR_UP: + if ( !(pCh->dataSetIn & I2_DSR) ) + { + pCh->dataSetIn |= I2_DDSR; + pCh->icount.dsr++; + dss_change = 1; + } + pCh->dataSetIn |= I2_DSR; + break; + + case STAT_DSR_DN: + if ( pCh->dataSetIn & I2_DSR ) + { + pCh->dataSetIn |= I2_DDSR; + pCh->icount.dsr++; + dss_change = 1; + } + pCh->dataSetIn &= ~I2_DSR; + break; + + case STAT_RI_UP: + if ( !(pCh->dataSetIn & I2_RI) ) + { + pCh->dataSetIn |= I2_DRI; + pCh->icount.rng++; + dss_change = 1; + } + pCh->dataSetIn |= I2_RI ; + break; + + case STAT_RI_DN: + // to be compat with serial.c + //if ( pCh->dataSetIn & I2_RI ) + //{ + // pCh->dataSetIn |= I2_DRI; + // pCh->icount.rng++; + // dss_change = 1; + //} + pCh->dataSetIn &= ~I2_RI ; + break; + + case STAT_BRK_DET: + pCh->dataSetIn |= I2_BRK; + pCh->icount.brk++; + dss_change = 1; + break; + + // Bookmarks? one less request we're waiting for + case STAT_BMARK: + pCh->bookMarks--; + if (pCh->bookMarks <= 0 ) { + pCh->bookMarks = 0; + wake_up_interruptible( &pCh->pBookmarkWait ); + + ip2trace (channel, ITRC_DRAIN, 20, 1, pCh->BookmarkTimer.expires ); + } + break; + + // Flow control packets? Update the new credits, and if + // someone was waiting for output, queue him up again. + case STAT_FLOW: + pCh->outfl.room = + ((flowStatPtr)pc)->room - + (pCh->outfl.asof - ((flowStatPtr)pc)->asof); + + ip2trace (channel, ITRC_STFLW, 1, 1, pCh->outfl.room ); + + if (pCh->channelNeeds & NEED_CREDIT) + { + ip2trace (channel, ITRC_STFLW, 2, 1, pCh->channelNeeds); + + pCh->channelNeeds &= ~NEED_CREDIT; + i2QueueNeeds(pB, pCh, NEED_INLINE); + if ( pCh->pTTY ) + ip2_owake(pCh->pTTY); + } + + ip2trace (channel, ITRC_STFLW, 3, 1, pCh->channelNeeds); + + pc += sizeof(flowStat); + break; + + /* Special packets: */ + /* Just copy the information into the channel structure */ + + case STAT_STATUS: + + pCh->channelStatus = *((debugStatPtr)pc); + pc += sizeof(debugStat); + break; + + case STAT_TXCNT: + + pCh->channelTcount = *((cntStatPtr)pc); + pc += sizeof(cntStat); + break; + + case STAT_RXCNT: + + pCh->channelRcount = *((cntStatPtr)pc); + pc += sizeof(cntStat); + break; + + case STAT_BOXIDS: + pB->channelBtypes = *((bidStatPtr)pc); + pc += sizeof(bidStat); + set_baud_params(pB); + break; + + case STAT_HWFAIL: + i2QueueCommands (PTYPE_INLINE, pCh, 0, 1, CMD_HW_TEST); + pCh->channelFail = *((failStatPtr)pc); + pc += sizeof(failStat); + break; + + /* No explicit match? then + * Might be an error packet... + */ + default: + switch (uc & STAT_MOD_ERROR) + { + case STAT_ERROR: + if (uc & STAT_E_PARITY) { + pCh->dataSetIn |= I2_PAR; + pCh->icount.parity++; + } + if (uc & STAT_E_FRAMING){ + pCh->dataSetIn |= I2_FRA; + pCh->icount.frame++; + } + if (uc & STAT_E_OVERRUN){ + pCh->dataSetIn |= I2_OVR; + pCh->icount.overrun++; + } + break; + + case STAT_MODEM: + // the answer to DSS_NOW request (not change) + pCh->dataSetIn = (pCh->dataSetIn + & ~(I2_RI | I2_CTS | I2_DCD | I2_DSR) ) + | xlatDss[uc & 0xf]; + wake_up_interruptible ( &pCh->dss_now_wait ); + default: + break; + } + } /* End of switch on status type */ + if (dss_change) { +#ifdef USE_IQ + schedule_work(&pCh->tqueue_status); +#else + do_status(&pCh->tqueue_status); +#endif + } + } + else /* Or else, channel is invalid */ + { + // Even though the channel is invalid, we must test the + // status to see how much additional data it has (to be + // skipped) + switch (*pc++) + { + case STAT_FLOW: + pc += 4; /* Skip the data */ + break; + + default: + break; + } + } + } // End of while (there is still some status packet left) + break; + + default: // Neither packet? should be impossible + ip2trace (ITRC_NO_PORT, ITRC_SFIFO, 5, 1, + PTYPE_OF(pB->i2eLeadoffWord) ); + write_unlock_irqrestore(&pB->read_fifo_spinlock, + bflags); + + break; + } // End of switch on type of packets + } /*while(board I2_HAS_INPUT)*/ + + ip2trace (ITRC_NO_PORT, ITRC_SFIFO, ITRC_RETURN, 0 ); + + // Send acknowledgement to the board even if there was no data! + pB->i2eOutMailWaiting |= MB_IN_STRIPPED; + return; +} + +//****************************************************************************** +// Function: i2Write2Fifo(pB,address,count) +// Parameters: Pointer to a board structure, source address, byte count +// Returns: bytes written +// +// Description: +// Writes count bytes to board io address(implied) from source +// Adjusts count, leaves reserve for next time around bypass cmds +//****************************************************************************** +static int +i2Write2Fifo(i2eBordStrPtr pB, unsigned char *source, int count,int reserve) +{ + int rc = 0; + unsigned long flags; + write_lock_irqsave(&pB->write_fifo_spinlock, flags); + if (!pB->i2eWaitingForEmptyFifo) { + if (pB->i2eFifoRemains > (count+reserve)) { + pB->i2eFifoRemains -= count; + iiWriteBuf(pB, source, count); + pB->i2eOutMailWaiting |= MB_OUT_STUFFED; + rc = count; + } + } + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); + return rc; +} +//****************************************************************************** +// Function: i2StuffFifoBypass(pB) +// Parameters: Pointer to a board structure +// Returns: Nothing +// +// Description: +// Stuffs as many bypass commands into the fifo as possible. This is simpler +// than stuffing data or inline commands to fifo, since we do not have +// flow-control to deal with. +//****************************************************************************** +static inline void +i2StuffFifoBypass(i2eBordStrPtr pB) +{ + i2ChanStrPtr pCh; + unsigned char *pRemove; + unsigned short stripIndex; + unsigned short packetSize; + unsigned short paddedSize; + unsigned short notClogged = 1; + unsigned long flags; + + int bailout = 1000; + + // Continue processing so long as there are entries, or there is room in the + // fifo. Each entry represents a channel with something to do. + while ( --bailout && notClogged && + (NULL != (pCh = i2DeQueueNeeds(pB,NEED_BYPASS)))) + { + write_lock_irqsave(&pCh->Cbuf_spinlock, flags); + stripIndex = pCh->Cbuf_strip; + + // as long as there are packets for this channel... + + while (stripIndex != pCh->Cbuf_stuff) { + pRemove = &(pCh->Cbuf[stripIndex]); + packetSize = CMD_COUNT_OF(pRemove) + sizeof(i2CmdHeader); + paddedSize = roundup(packetSize, 2); + + if (paddedSize > 0) { + if ( 0 == i2Write2Fifo(pB, pRemove, paddedSize,0)) { + notClogged = 0; /* fifo full */ + i2QueueNeeds(pB, pCh, NEED_BYPASS); // Put back on queue + break; // Break from the channel + } + } +#ifdef DEBUG_FIFO +WriteDBGBuf("BYPS", pRemove, paddedSize); +#endif /* DEBUG_FIFO */ + pB->debugBypassCount++; + + pRemove += packetSize; + stripIndex += packetSize; + if (stripIndex >= CBUF_SIZE) { + stripIndex = 0; + pRemove = pCh->Cbuf; + } + } + // Done with this channel. Move to next, removing this one from + // the queue of channels if we cleaned it out (i.e., didn't get clogged. + pCh->Cbuf_strip = stripIndex; + write_unlock_irqrestore(&pCh->Cbuf_spinlock, flags); + } // Either clogged or finished all the work + +#ifdef IP2DEBUG_TRACE + if ( !bailout ) { + ip2trace (ITRC_NO_PORT, ITRC_ERROR, 1, 0 ); + } +#endif +} + +//****************************************************************************** +// Function: i2StuffFifoFlow(pB) +// Parameters: Pointer to a board structure +// Returns: Nothing +// +// Description: +// Stuffs as many flow control packets into the fifo as possible. This is easier +// even than doing normal bypass commands, because there is always at most one +// packet, already assembled, for each channel. +//****************************************************************************** +static inline void +i2StuffFifoFlow(i2eBordStrPtr pB) +{ + i2ChanStrPtr pCh; + unsigned short paddedSize = roundup(sizeof(flowIn), 2); + + ip2trace (ITRC_NO_PORT, ITRC_SFLOW, ITRC_ENTER, 2, + pB->i2eFifoRemains, paddedSize ); + + // Continue processing so long as there are entries, or there is room in the + // fifo. Each entry represents a channel with something to do. + while ( (NULL != (pCh = i2DeQueueNeeds(pB,NEED_FLOW)))) { + pB->debugFlowCount++; + + // NO Chan LOCK needed ??? + if ( 0 == i2Write2Fifo(pB,(unsigned char *)&(pCh->infl),paddedSize,0)) { + break; + } +#ifdef DEBUG_FIFO + WriteDBGBuf("FLOW",(unsigned char *) &(pCh->infl), paddedSize); +#endif /* DEBUG_FIFO */ + + } // Either clogged or finished all the work + + ip2trace (ITRC_NO_PORT, ITRC_SFLOW, ITRC_RETURN, 0 ); +} + +//****************************************************************************** +// Function: i2StuffFifoInline(pB) +// Parameters: Pointer to a board structure +// Returns: Nothing +// +// Description: +// Stuffs as much data and inline commands into the fifo as possible. This is +// the most complex fifo-stuffing operation, since there if now the channel +// flow-control issue to deal with. +//****************************************************************************** +static inline void +i2StuffFifoInline(i2eBordStrPtr pB) +{ + i2ChanStrPtr pCh; + unsigned char *pRemove; + unsigned short stripIndex; + unsigned short packetSize; + unsigned short paddedSize; + unsigned short notClogged = 1; + unsigned short flowsize; + unsigned long flags; + + int bailout = 1000; + int bailout2; + + ip2trace (ITRC_NO_PORT, ITRC_SICMD, ITRC_ENTER, 3, pB->i2eFifoRemains, + pB->i2Dbuf_strip, pB->i2Dbuf_stuff ); + + // Continue processing so long as there are entries, or there is room in the + // fifo. Each entry represents a channel with something to do. + while ( --bailout && notClogged && + (NULL != (pCh = i2DeQueueNeeds(pB,NEED_INLINE))) ) + { + write_lock_irqsave(&pCh->Obuf_spinlock, flags); + stripIndex = pCh->Obuf_strip; + + ip2trace (CHANN, ITRC_SICMD, 3, 2, stripIndex, pCh->Obuf_stuff ); + + // as long as there are packets for this channel... + bailout2 = 1000; + while ( --bailout2 && stripIndex != pCh->Obuf_stuff) { + pRemove = &(pCh->Obuf[stripIndex]); + + // Must determine whether this be a data or command packet to + // calculate correctly the header size and the amount of + // flow-control credit this type of packet will use. + if (PTYPE_OF(pRemove) == PTYPE_DATA) { + flowsize = DATA_COUNT_OF(pRemove); + packetSize = flowsize + sizeof(i2DataHeader); + } else { + flowsize = CMD_COUNT_OF(pRemove); + packetSize = flowsize + sizeof(i2CmdHeader); + } + flowsize = CREDIT_USAGE(flowsize); + paddedSize = roundup(packetSize, 2); + + ip2trace (CHANN, ITRC_SICMD, 4, 2, pB->i2eFifoRemains, paddedSize ); + + // If we don't have enough credits from the board to send the data, + // flag the channel that we are waiting for flow control credit, and + // break out. This will clean up this channel and remove us from the + // queue of hot things to do. + + ip2trace (CHANN, ITRC_SICMD, 5, 2, pCh->outfl.room, flowsize ); + + if (pCh->outfl.room <= flowsize) { + // Do Not have the credits to send this packet. + i2QueueNeeds(pB, pCh, NEED_CREDIT); + notClogged = 0; + break; // So to do next channel + } + if ( (paddedSize > 0) + && ( 0 == i2Write2Fifo(pB, pRemove, paddedSize, 128))) { + // Do Not have room in fifo to send this packet. + notClogged = 0; + i2QueueNeeds(pB, pCh, NEED_INLINE); + break; // Break from the channel + } +#ifdef DEBUG_FIFO +WriteDBGBuf("DATA", pRemove, paddedSize); +#endif /* DEBUG_FIFO */ + pB->debugInlineCount++; + + pCh->icount.tx += flowsize; + // Update current credits + pCh->outfl.room -= flowsize; + pCh->outfl.asof += flowsize; + if (PTYPE_OF(pRemove) == PTYPE_DATA) { + pCh->Obuf_char_count -= DATA_COUNT_OF(pRemove); + } + pRemove += packetSize; + stripIndex += packetSize; + + ip2trace (CHANN, ITRC_SICMD, 6, 2, stripIndex, pCh->Obuf_strip); + + if (stripIndex >= OBUF_SIZE) { + stripIndex = 0; + pRemove = pCh->Obuf; + + ip2trace (CHANN, ITRC_SICMD, 7, 1, stripIndex ); + + } + } /* while */ + if ( !bailout2 ) { + ip2trace (CHANN, ITRC_ERROR, 3, 0 ); + } + // Done with this channel. Move to next, removing this one from the + // queue of channels if we cleaned it out (i.e., didn't get clogged. + pCh->Obuf_strip = stripIndex; + write_unlock_irqrestore(&pCh->Obuf_spinlock, flags); + if ( notClogged ) + { + + ip2trace (CHANN, ITRC_SICMD, 8, 0 ); + + if ( pCh->pTTY ) { + ip2_owake(pCh->pTTY); + } + } + } // Either clogged or finished all the work + + if ( !bailout ) { + ip2trace (ITRC_NO_PORT, ITRC_ERROR, 4, 0 ); + } + + ip2trace (ITRC_NO_PORT, ITRC_SICMD, ITRC_RETURN, 1,pB->i2Dbuf_strip); +} + +//****************************************************************************** +// Function: serviceOutgoingFifo(pB) +// Parameters: Pointer to a board structure +// Returns: Nothing +// +// Description: +// Helper routine to put data in the outgoing fifo, if we aren't already waiting +// for something to be there. If the fifo has only room for a very little data, +// go head and hit the board with a mailbox hit immediately. Otherwise, it will +// have to happen later in the interrupt processing. Since this routine may be +// called both at interrupt and foreground time, we must turn off interrupts +// during the entire process. +//****************************************************************************** +static void +serviceOutgoingFifo(i2eBordStrPtr pB) +{ + // If we aren't currently waiting for the board to empty our fifo, service + // everything that is pending, in priority order (especially, Bypass before + // Inline). + if ( ! pB->i2eWaitingForEmptyFifo ) + { + i2StuffFifoFlow(pB); + i2StuffFifoBypass(pB); + i2StuffFifoInline(pB); + + iiSendPendingMail(pB); + } +} + +//****************************************************************************** +// Function: i2ServiceBoard(pB) +// Parameters: Pointer to a board structure +// Returns: Nothing +// +// Description: +// Normally this is called from interrupt level, but there is deliberately +// nothing in here specific to being called from interrupt level. All the +// hardware-specific, interrupt-specific things happen at the outer levels. +// +// For example, a timer interrupt could drive this routine for some sort of +// polled operation. The only requirement is that the programmer deal with any +// atomiticity/concurrency issues that result. +// +// This routine responds to the board's having sent mailbox information to the +// host (which would normally cause an interrupt). This routine reads the +// incoming mailbox. If there is no data in it, this board did not create the +// interrupt and/or has nothing to be done to it. (Except, if we have been +// waiting to write mailbox data to it, we may do so. +// +// Based on the value in the mailbox, we may take various actions. +// +// No checking here of pB validity: after all, it shouldn't have been called by +// the handler unless pB were on the list. +//****************************************************************************** +static inline int +i2ServiceBoard ( i2eBordStrPtr pB ) +{ + unsigned inmail; + unsigned long flags; + + + /* This should be atomic because of the way we are called... */ + if (NO_MAIL_HERE == ( inmail = pB->i2eStartMail ) ) { + inmail = iiGetMail(pB); + } + pB->i2eStartMail = NO_MAIL_HERE; + + ip2trace (ITRC_NO_PORT, ITRC_INTR, 2, 1, inmail ); + + if (inmail != NO_MAIL_HERE) { + // If the board has gone fatal, nothing to do but hit a bit that will + // alert foreground tasks to protest! + if ( inmail & MB_FATAL_ERROR ) { + pB->i2eFatal = 1; + goto exit_i2ServiceBoard; + } + + /* Assuming no fatal condition, we proceed to do work */ + if ( inmail & MB_IN_STUFFED ) { + pB->i2eFifoInInts++; + i2StripFifo(pB); /* There might be incoming packets */ + } + + if (inmail & MB_OUT_STRIPPED) { + pB->i2eFifoOutInts++; + write_lock_irqsave(&pB->write_fifo_spinlock, flags); + pB->i2eFifoRemains = pB->i2eFifoSize; + pB->i2eWaitingForEmptyFifo = 0; + write_unlock_irqrestore(&pB->write_fifo_spinlock, + flags); + + ip2trace (ITRC_NO_PORT, ITRC_INTR, 30, 1, pB->i2eFifoRemains ); + + } + serviceOutgoingFifo(pB); + } + + ip2trace (ITRC_NO_PORT, ITRC_INTR, 8, 0 ); + +exit_i2ServiceBoard: + + return 0; +} diff --git a/drivers/staging/tty/ip2/i2lib.h b/drivers/staging/tty/ip2/i2lib.h new file mode 100644 index 000000000000..e559e9bac06d --- /dev/null +++ b/drivers/staging/tty/ip2/i2lib.h @@ -0,0 +1,351 @@ +/******************************************************************************* +* +* (c) 1998 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Header file for high level library functions +* +*******************************************************************************/ +#ifndef I2LIB_H +#define I2LIB_H 1 +//------------------------------------------------------------------------------ +// I2LIB.H +// +// IntelliPort-II and IntelliPort-IIEX +// +// Defines, structure definitions, and external declarations for i2lib.c +//------------------------------------------------------------------------------ +//-------------------------------------- +// Mandatory Includes: +//-------------------------------------- +#include "ip2types.h" +#include "i2ellis.h" +#include "i2pack.h" +#include "i2cmd.h" +#include + +//------------------------------------------------------------------------------ +// i2ChanStr -- Channel Structure: +// Used to track per-channel information for the library routines using standard +// loadware. Note also, a pointer to an array of these structures is patched +// into the i2eBordStr (see i2ellis.h) +//------------------------------------------------------------------------------ +// +// If we make some limits on the maximum block sizes, we can avoid dealing with +// buffer wrap. The wrapping of the buffer is based on where the start of the +// packet is. Then there is always room for the packet contiguously. +// +// Maximum total length of an outgoing data or in-line command block. The limit +// of 36 on data is quite arbitrary and based more on DOS memory limitations +// than the board interface. However, for commands, the maximum packet length is +// MAX_CMD_PACK_SIZE, because the field size for the count is only a few bits +// (see I2PACK.H) in such packets. For data packets, the count field size is not +// the limiting factor. As of this writing, MAX_OBUF_BLOCK < MAX_CMD_PACK_SIZE, +// but be careful if wanting to modify either. +// +#define MAX_OBUF_BLOCK 36 + +// Another note on maximum block sizes: we are buffering packets here. Data is +// put into the buffer (if there is room) regardless of the credits from the +// board. The board sends new credits whenever it has removed from his buffers a +// number of characters equal to 80% of total buffer size. (Of course, the total +// buffer size is what is reported when the very first set of flow control +// status packets are received from the board. Therefore, to be robust, you must +// always fill the board to at least 80% of the current credit limit, else you +// might not give it enough to trigger a new report. These conditions are +// obtained here so long as the maximum output block size is less than 20% the +// size of the board's output buffers. This is true at present by "coincidence" +// or "infernal knowledge": the board's output buffers are at least 700 bytes +// long (20% = 140 bytes, at least). The 80% figure is "official", so the safest +// strategy might be to trap the first flow control report and guarantee that +// the effective maxObufBlock is the minimum of MAX_OBUF_BLOCK and 20% of first +// reported buffer credit. +// +#define MAX_CBUF_BLOCK 6 // Maximum total length of a bypass command block + +#define IBUF_SIZE 512 // character capacity of input buffer per channel +#define OBUF_SIZE 1024// character capacity of output buffer per channel +#define CBUF_SIZE 10 // character capacity of output bypass buffer + +typedef struct _i2ChanStr +{ + // First, back-pointers so that given a pointer to this structure, you can + // determine the correct board and channel number to reference, (say, when + // issuing commands, etc. (Note, channel number is in infl.hd.i2sChannel.) + + int port_index; // Index of port in channel structure array attached + // to board structure. + PTTY pTTY; // Pointer to tty structure for port (OS specific) + USHORT validity; // Indicates whether the given channel has been + // initialized, really exists (or is a missing + // channel, e.g. channel 9 on an 8-port box.) + + i2eBordStrPtr pMyBord; // Back-pointer to this channel's board structure + + int wopen; // waiting fer carrier + + int throttled; // Set if upper layer can take no data + + int flags; // Defined in tty.h + + PWAITQ open_wait; // Pointer for OS sleep function. + PWAITQ close_wait; // Pointer for OS sleep function. + PWAITQ delta_msr_wait;// Pointer for OS sleep function. + PWAITQ dss_now_wait; // Pointer for OS sleep function. + + struct timer_list BookmarkTimer; // Used by i2DrainOutput + wait_queue_head_t pBookmarkWait; // Used by i2DrainOutput + + int BaudBase; + int BaudDivisor; + + USHORT ClosingDelay; + USHORT ClosingWaitTime; + + volatile + flowIn infl; // This structure is initialized as a completely + // formed flow-control command packet, and as such + // has the channel number, also the capacity and + // "as-of" data needed continuously. + + USHORT sinceLastFlow; // Counts the number of characters read from input + // buffers, since the last time flow control info + // was sent. + + USHORT whenSendFlow; // Determines when new flow control is to be sent to + // the board. Note unlike earlier manifestations of + // the driver, these packets can be sent from + // in-place. + + USHORT channelNeeds; // Bit map of important things which must be done + // for this channel. (See bits below ) + + volatile + flowStat outfl; // Same type of structure is used to hold current + // flow control information used to control our + // output. "asof" is kept updated as data is sent, + // and "room" never goes to zero. + + // The incoming ring buffer + // Unlike the outgoing buffers, this holds raw data, not packets. The two + // extra bytes are used to hold the byte-padding when there is room for an + // odd number of bytes before we must wrap. + // + UCHAR Ibuf[IBUF_SIZE + 2]; + volatile + USHORT Ibuf_stuff; // Stuffing index + volatile + USHORT Ibuf_strip; // Stripping index + + // The outgoing ring-buffer: Holds Data and command packets. N.B., even + // though these are in the channel structure, the channel is also written + // here, the easier to send it to the fifo when ready. HOWEVER, individual + // packets here are NOT padded to even length: the routines for writing + // blocks to the fifo will pad to even byte counts. + // + UCHAR Obuf[OBUF_SIZE+MAX_OBUF_BLOCK+4]; + volatile + USHORT Obuf_stuff; // Stuffing index + volatile + USHORT Obuf_strip; // Stripping index + int Obuf_char_count; + + // The outgoing bypass-command buffer. Unlike earlier manifestations, the + // flow control packets are sent directly from the structures. As above, the + // channel number is included in the packet, but they are NOT padded to even + // size. + // + UCHAR Cbuf[CBUF_SIZE+MAX_CBUF_BLOCK+2]; + volatile + USHORT Cbuf_stuff; // Stuffing index + volatile + USHORT Cbuf_strip; // Stripping index + + // The temporary buffer for the Linux tty driver PutChar entry. + // + UCHAR Pbuf[MAX_OBUF_BLOCK - sizeof (i2DataHeader)]; + volatile + USHORT Pbuf_stuff; // Stuffing index + + // The state of incoming data-set signals + // + USHORT dataSetIn; // Bit-mapped according to below. Also indicates + // whether a break has been detected since last + // inquiry. + + // The state of outcoming data-set signals (as far as we can tell!) + // + USHORT dataSetOut; // Bit-mapped according to below. + + // Most recent hot-key identifier detected + // + USHORT hotKeyIn; // Hot key as sent by the board, HOT_CLEAR indicates + // no hot key detected since last examined. + + // Counter of outstanding requests for bookmarks + // + short bookMarks; // Number of outstanding bookmark requests, (+ive + // whenever a bookmark request if queued up, -ive + // whenever a bookmark is received). + + // Misc options + // + USHORT channelOptions; // See below + + // To store various incoming special packets + // + debugStat channelStatus; + cntStat channelRcount; + cntStat channelTcount; + failStat channelFail; + + // To store the last values for line characteristics we sent to the board. + // + int speed; + + int flush_flags; + + void (*trace)(unsigned short,unsigned char,unsigned char,unsigned long,...); + + /* + * Kernel counters for the 4 input interrupts + */ + struct async_icount icount; + + /* + * Task queues for processing input packets from the board. + */ + struct work_struct tqueue_input; + struct work_struct tqueue_status; + struct work_struct tqueue_hangup; + + rwlock_t Ibuf_spinlock; + rwlock_t Obuf_spinlock; + rwlock_t Cbuf_spinlock; + rwlock_t Pbuf_spinlock; + +} i2ChanStr, *i2ChanStrPtr; + +//--------------------------------------------------- +// Manifests and bit-maps for elements in i2ChanStr +//--------------------------------------------------- +// +// flush flags +// +#define STARTFL_FLAG 1 +#define STOPFL_FLAG 2 + +// validity +// +#define CHANNEL_MAGIC_BITS 0xff00 +#define CHANNEL_MAGIC 0x5300 // (validity & CHANNEL_MAGIC_BITS) == + // CHANNEL_MAGIC --> structure good + +#define CHANNEL_SUPPORT 0x0001 // Indicates channel is supported, exists, + // and passed P.O.S.T. + +// channelNeeds +// +#define NEED_FLOW 1 // Indicates flow control has been queued +#define NEED_INLINE 2 // Indicates inline commands or data queued +#define NEED_BYPASS 4 // Indicates bypass commands queued +#define NEED_CREDIT 8 // Indicates would be sending except has not sufficient + // credit. The data is still in the channel structure, + // but the channel is not enqueued in the board + // structure again until there is a credit received from + // the board. + +// dataSetIn (Also the bits for i2GetStatus return value) +// +#define I2_DCD 1 +#define I2_CTS 2 +#define I2_DSR 4 +#define I2_RI 8 + +// dataSetOut (Also the bits for i2GetStatus return value) +// +#define I2_DTR 1 +#define I2_RTS 2 + +// i2GetStatus() can optionally clear these bits +// +#define I2_BRK 0x10 // A break was detected +#define I2_PAR 0x20 // A parity error was received +#define I2_FRA 0x40 // A framing error was received +#define I2_OVR 0x80 // An overrun error was received + +// i2GetStatus() automatically clears these bits */ +// +#define I2_DDCD 0x100 // DCD changed from its former value +#define I2_DCTS 0x200 // CTS changed from its former value +#define I2_DDSR 0x400 // DSR changed from its former value +#define I2_DRI 0x800 // RI changed from its former value + +// hotKeyIn +// +#define HOT_CLEAR 0x1322 // Indicates that no hot-key has been detected + +// channelOptions +// +#define CO_NBLOCK_WRITE 1 // Writes don't block waiting for buffer. (Default + // is, they do wait.) + +// fcmodes +// +#define I2_OUTFLOW_CTS 0x0001 +#define I2_INFLOW_RTS 0x0002 +#define I2_INFLOW_DSR 0x0004 +#define I2_INFLOW_DTR 0x0008 +#define I2_OUTFLOW_DSR 0x0010 +#define I2_OUTFLOW_DTR 0x0020 +#define I2_OUTFLOW_XON 0x0040 +#define I2_OUTFLOW_XANY 0x0080 +#define I2_INFLOW_XON 0x0100 + +#define I2_CRTSCTS (I2_OUTFLOW_CTS|I2_INFLOW_RTS) +#define I2_IXANY_MODE (I2_OUTFLOW_XON|I2_OUTFLOW_XANY) + +//------------------------------------------- +// Macros used from user level like functions +//------------------------------------------- + +// Macros to set and clear channel options +// +#define i2SetOption(pCh, option) pCh->channelOptions |= option +#define i2ClrOption(pCh, option) pCh->channelOptions &= ~option + +// Macro to set fatal-error trap +// +#define i2SetFatalTrap(pB, routine) pB->i2eFatalTrap = routine + +//-------------------------------------------- +// Declarations and prototypes for i2lib.c +//-------------------------------------------- +// +static int i2InitChannels(i2eBordStrPtr, int, i2ChanStrPtr); +static int i2QueueCommands(int, i2ChanStrPtr, int, int, cmdSyntaxPtr,...); +static int i2GetStatus(i2ChanStrPtr, int); +static int i2Input(i2ChanStrPtr); +static int i2InputFlush(i2ChanStrPtr); +static int i2Output(i2ChanStrPtr, const char *, int); +static int i2OutputFree(i2ChanStrPtr); +static int i2ServiceBoard(i2eBordStrPtr); +static void i2DrainOutput(i2ChanStrPtr, int); + +#ifdef IP2DEBUG_TRACE +void ip2trace(unsigned short,unsigned char,unsigned char,unsigned long,...); +#else +#define ip2trace(a,b,c,d...) do {} while (0) +#endif + +// Argument to i2QueueCommands +// +#define C_IN_LINE 1 +#define C_BYPASS 0 + +#endif // I2LIB_H diff --git a/drivers/staging/tty/ip2/i2pack.h b/drivers/staging/tty/ip2/i2pack.h new file mode 100644 index 000000000000..00342a677c90 --- /dev/null +++ b/drivers/staging/tty/ip2/i2pack.h @@ -0,0 +1,364 @@ +/******************************************************************************* +* +* (c) 1998 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Definitions of the packets used to transfer data and commands +* Host <--> Board. Information provided here is only applicable +* when the standard loadware is active. +* +*******************************************************************************/ +#ifndef I2PACK_H +#define I2PACK_H 1 + +//----------------------------------------------- +// Revision History: +// +// 10 October 1991 MAG First draft +// 24 February 1992 MAG Additions for 1.4.x loadware +// 11 March 1992 MAG New status packets +// +//----------------------------------------------- + +//------------------------------------------------------------------------------ +// Packet Formats: +// +// Information passes between the host and board through the FIFO in packets. +// These have headers which indicate the type of packet. Because the fifo data +// path may be 16-bits wide, the protocol is constrained such that each packet +// is always padded to an even byte count. (The lower-level interface routines +// -- i2ellis.c -- are designed to do this). +// +// The sender (be it host or board) must place some number of complete packets +// in the fifo, then place a message in the mailbox that packets are available. +// Placing such a message interrupts the "receiver" (be it board or host), who +// reads the mailbox message and determines that there are incoming packets +// ready. Since there are no partial packets, and the length of a packet is +// given in the header, the remainder of the packet can be read without checking +// for FIFO empty condition. The process is repeated, packet by packet, until +// the incoming FIFO is empty. Then the receiver uses the outbound mailbox to +// signal the board that it has read the data. Only then can the sender place +// additional data in the fifo. +//------------------------------------------------------------------------------ +// +//------------------------------------------------ +// Definition of Packet Header Area +//------------------------------------------------ +// +// Caution: these only define header areas. In actual use the data runs off +// beyond the end of these structures. +// +// Since these structures are based on sequences of bytes which go to the board, +// there cannot be ANY padding between the elements. +#pragma pack(1) + +//---------------------------- +// DATA PACKETS +//---------------------------- + +typedef struct _i2DataHeader +{ + unsigned char i2sChannel; /* The channel number: 0-255 */ + + // -- Bitfields are allocated LSB first -- + + // For incoming data, indicates whether this is an ordinary packet or a + // special one (e.g., hot key hit). + unsigned i2sId : 2 __attribute__ ((__packed__)); + + // For tagging data packets. There are flush commands which flush only data + // packets bearing a particular tag. (used in implementing IntelliView and + // IntelliPrint). THE TAG VALUE 0xf is RESERVED and must not be used (it has + // meaning internally to the loadware). + unsigned i2sTag : 4; + + // These two bits determine the type of packet sent/received. + unsigned i2sType : 2; + + // The count of data to follow: does not include the possible additional + // padding byte. MAXIMUM COUNT: 4094. The top four bits must be 0. + unsigned short i2sCount; + +} i2DataHeader, *i2DataHeaderPtr; + +// Structure is immediately followed by the data, proper. + +//---------------------------- +// NON-DATA PACKETS +//---------------------------- + +typedef struct _i2CmdHeader +{ + unsigned char i2sChannel; // The channel number: 0-255 (Except where noted + // - see below + + // Number of bytes of commands, status or whatever to follow + unsigned i2sCount : 6; + + // These two bits determine the type of packet sent/received. + unsigned i2sType : 2; + +} i2CmdHeader, *i2CmdHeaderPtr; + +// Structure is immediately followed by the applicable data. + +//--------------------------------------- +// Flow Control Packets (Outbound) +//--------------------------------------- + +// One type of outbound command packet is so important that the entire structure +// is explicitly defined here. That is the flow-control packet. This is never +// sent by user-level code (as would be the commands to raise/lower DTR, for +// example). These are only sent by the library routines in response to reading +// incoming data into the buffers. +// +// The parameters inside the command block are maintained in place, then the +// block is sent at the appropriate time. + +typedef struct _flowIn +{ + i2CmdHeader hd; // Channel #, count, type (see above) + unsigned char fcmd; // The flow control command (37) + unsigned short asof; // As of byte number "asof" (LSB first!) I have room + // for "room" bytes + unsigned short room; +} flowIn, *flowInPtr; + +//---------------------------------------- +// (Incoming) Status Packets +//---------------------------------------- + +// Incoming packets which are non-data packets are status packets. In this case, +// the channel number in the header is unimportant. What follows are one or more +// sub-packets, the first word of which consists of the channel (first or low +// byte) and the status indicator (second or high byte), followed by possibly +// more data. + +#define STAT_CTS_UP 0 /* CTS raised (no other bytes) */ +#define STAT_CTS_DN 1 /* CTS dropped (no other bytes) */ +#define STAT_DCD_UP 2 /* DCD raised (no other bytes) */ +#define STAT_DCD_DN 3 /* DCD dropped (no other bytes) */ +#define STAT_DSR_UP 4 /* DSR raised (no other bytes) */ +#define STAT_DSR_DN 5 /* DSR dropped (no other bytes) */ +#define STAT_RI_UP 6 /* RI raised (no other bytes) */ +#define STAT_RI_DN 7 /* RI dropped (no other bytes) */ +#define STAT_BRK_DET 8 /* BRK detect (no other bytes) */ +#define STAT_FLOW 9 /* Flow control(-- more: see below */ +#define STAT_BMARK 10 /* Bookmark (no other bytes) + * Bookmark is sent as a response to + * a command 60: request for bookmark + */ +#define STAT_STATUS 11 /* Special packet: see below */ +#define STAT_TXCNT 12 /* Special packet: see below */ +#define STAT_RXCNT 13 /* Special packet: see below */ +#define STAT_BOXIDS 14 /* Special packet: see below */ +#define STAT_HWFAIL 15 /* Special packet: see below */ + +#define STAT_MOD_ERROR 0xc0 +#define STAT_MODEM 0xc0/* If status & STAT_MOD_ERROR: + * == STAT_MODEM, then this is a modem + * status packet, given in response to a + * CMD_DSS_NOW command. + * The low nibble has each data signal: + */ +#define STAT_MOD_DCD 0x8 +#define STAT_MOD_RI 0x4 +#define STAT_MOD_DSR 0x2 +#define STAT_MOD_CTS 0x1 + +#define STAT_ERROR 0x80/* If status & STAT_MOD_ERROR + * == STAT_ERROR, then + * sort of error on the channel. + * The remaining seven bits indicate + * what sort of error it is. + */ +/* The low three bits indicate parity, framing, or overrun errors */ + +#define STAT_E_PARITY 4 /* Parity error */ +#define STAT_E_FRAMING 2 /* Framing error */ +#define STAT_E_OVERRUN 1 /* (uxart) overrun error */ + +//--------------------------------------- +// STAT_FLOW packets +//--------------------------------------- + +typedef struct _flowStat +{ + unsigned short asof; + unsigned short room; +}flowStat, *flowStatPtr; + +// flowStat packets are received from the board to regulate the flow of outgoing +// data. A local copy of this structure is also kept to track the amount of +// credits used and credits remaining. "room" is the amount of space in the +// board's buffers, "as of" having received a certain byte number. When sending +// data to the fifo, you must calculate how much buffer space your packet will +// use. Add this to the current "asof" and subtract it from the current "room". +// +// The calculation for the board's buffer is given by CREDIT_USAGE, where size +// is the un-rounded count of either data characters or command characters. +// (Which is to say, the count rounded up, plus two). + +#define CREDIT_USAGE(size) (((size) + 3) & ~1) + +//--------------------------------------- +// STAT_STATUS packets +//--------------------------------------- + +typedef struct _debugStat +{ + unsigned char d_ccsr; + unsigned char d_txinh; + unsigned char d_stat1; + unsigned char d_stat2; +} debugStat, *debugStatPtr; + +// debugStat packets are sent to the host in response to a CMD_GET_STATUS +// command. Each byte is bit-mapped as described below: + +#define D_CCSR_XON 2 /* Has received XON, ready to transmit */ +#define D_CCSR_XOFF 4 /* Has received XOFF, not transmitting */ +#define D_CCSR_TXENAB 8 /* Transmitter is enabled */ +#define D_CCSR_RXENAB 0x80 /* Receiver is enabled */ + +#define D_TXINH_BREAK 1 /* We are sending a break */ +#define D_TXINH_EMPTY 2 /* No data to send */ +#define D_TXINH_SUSP 4 /* Output suspended via command 57 */ +#define D_TXINH_CMD 8 /* We are processing an in-line command */ +#define D_TXINH_LCD 0x10 /* LCD diagnostics are running */ +#define D_TXINH_PAUSE 0x20 /* We are processing a PAUSE command */ +#define D_TXINH_DCD 0x40 /* DCD is low, preventing transmission */ +#define D_TXINH_DSR 0x80 /* DSR is low, preventing transmission */ + +#define D_STAT1_TXEN 1 /* Transmit INTERRUPTS enabled */ +#define D_STAT1_RXEN 2 /* Receiver INTERRUPTS enabled */ +#define D_STAT1_MDEN 4 /* Modem (data set sigs) interrupts enabled */ +#define D_STAT1_RLM 8 /* Remote loopback mode selected */ +#define D_STAT1_LLM 0x10 /* Local internal loopback mode selected */ +#define D_STAT1_CTS 0x20 /* CTS is low, preventing transmission */ +#define D_STAT1_DTR 0x40 /* DTR is low, to stop remote transmission */ +#define D_STAT1_RTS 0x80 /* RTS is low, to stop remote transmission */ + +#define D_STAT2_TXMT 1 /* Transmit buffers are all empty */ +#define D_STAT2_RXMT 2 /* Receive buffers are all empty */ +#define D_STAT2_RXINH 4 /* Loadware has tried to inhibit remote + * transmission: dropped DTR, sent XOFF, + * whatever... + */ +#define D_STAT2_RXFLO 8 /* Loadware can send no more data to host + * until it receives a flow-control packet + */ +//----------------------------------------- +// STAT_TXCNT and STAT_RXCNT packets +//---------------------------------------- + +typedef struct _cntStat +{ + unsigned short cs_time; // (Assumes host is little-endian!) + unsigned short cs_count; +} cntStat, *cntStatPtr; + +// These packets are sent in response to a CMD_GET_RXCNT or a CMD_GET_TXCNT +// bypass command. cs_time is a running 1 Millisecond counter which acts as a +// time stamp. cs_count is a running counter of data sent or received from the +// uxarts. (Not including data added by the chip itself, as with CRLF +// processing). +//------------------------------------------ +// STAT_HWFAIL packets +//------------------------------------------ + +typedef struct _failStat +{ + unsigned char fs_written; + unsigned char fs_read; + unsigned short fs_address; +} failStat, *failStatPtr; + +// This packet is sent whenever the on-board diagnostic process detects an +// error. At startup, this process is dormant. The host can wake it up by +// issuing the bypass command CMD_HW_TEST. The process runs at low priority and +// performs continuous hardware verification; writing data to certain on-board +// registers, reading it back, and comparing. If it detects an error, this +// packet is sent to the host, and the process goes dormant again until the host +// sends another CMD_HW_TEST. It then continues with the next register to be +// tested. + +//------------------------------------------------------------------------------ +// Macros to deal with the headers more easily! Note that these are defined so +// they may be used as "left" as well as "right" expressions. +//------------------------------------------------------------------------------ + +// Given a pointer to the packet, reference the channel number +// +#define CHANNEL_OF(pP) ((i2DataHeaderPtr)(pP))->i2sChannel + +// Given a pointer to the packet, reference the Packet type +// +#define PTYPE_OF(pP) ((i2DataHeaderPtr)(pP))->i2sType + +// The possible types of packets +// +#define PTYPE_DATA 0 /* Host <--> Board */ +#define PTYPE_BYPASS 1 /* Host ---> Board */ +#define PTYPE_INLINE 2 /* Host ---> Board */ +#define PTYPE_STATUS 2 /* Host <--- Board */ + +// Given a pointer to a Data packet, reference the Tag +// +#define TAG_OF(pP) ((i2DataHeaderPtr)(pP))->i2sTag + +// Given a pointer to a Data packet, reference the data i.d. +// +#define ID_OF(pP) ((i2DataHeaderPtr)(pP))->i2sId + +// The possible types of ID's +// +#define ID_ORDINARY_DATA 0 +#define ID_HOT_KEY 1 + +// Given a pointer to a Data packet, reference the count +// +#define DATA_COUNT_OF(pP) ((i2DataHeaderPtr)(pP))->i2sCount + +// Given a pointer to a Data packet, reference the beginning of data +// +#define DATA_OF(pP) &((unsigned char *)(pP))[4] // 4 = size of header + +// Given a pointer to a Non-Data packet, reference the count +// +#define CMD_COUNT_OF(pP) ((i2CmdHeaderPtr)(pP))->i2sCount + +#define MAX_CMD_PACK_SIZE 62 // Maximum size of such a count + +// Given a pointer to a Non-Data packet, reference the beginning of data +// +#define CMD_OF(pP) &((unsigned char *)(pP))[2] // 2 = size of header + +//-------------------------------- +// MailBox Bits: +//-------------------------------- + +//-------------------------- +// Outgoing (host to board) +//-------------------------- +// +#define MB_OUT_STUFFED 0x80 // Host has placed output in fifo +#define MB_IN_STRIPPED 0x40 // Host has read in all input from fifo + +//-------------------------- +// Incoming (board to host) +//-------------------------- +// +#define MB_IN_STUFFED 0x80 // Board has placed input in fifo +#define MB_OUT_STRIPPED 0x40 // Board has read all output from fifo +#define MB_FATAL_ERROR 0x20 // Board has encountered a fatal error + +#pragma pack() // Reset padding to command-line default + +#endif // I2PACK_H + diff --git a/drivers/staging/tty/ip2/ip2.h b/drivers/staging/tty/ip2/ip2.h new file mode 100644 index 000000000000..936ccc533949 --- /dev/null +++ b/drivers/staging/tty/ip2/ip2.h @@ -0,0 +1,107 @@ +/******************************************************************************* +* +* (c) 1998 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Driver constants for configuration and tuning +* +* NOTES: +* +*******************************************************************************/ +#ifndef IP2_H +#define IP2_H + +#include "ip2types.h" +#include "i2cmd.h" + +/*************/ +/* Constants */ +/*************/ + +/* Device major numbers - since version 2.0.26. */ +#define IP2_TTY_MAJOR 71 +#define IP2_CALLOUT_MAJOR 72 +#define IP2_IPL_MAJOR 73 + +/* Board configuration array. + * This array defines the hardware irq and address for up to IP2_MAX_BOARDS + * (4 supported per ip2_types.h) ISA board addresses and irqs MUST be specified, + * PCI and EISA boards are probed for and automagicly configed + * iff the addresses are set to 1 and 2 respectivily. + * 0x0100 - 0x03f0 == ISA + * 1 == PCI + * 2 == EISA + * 0 == (skip this board) + * This array defines the hardware addresses for them. Special + * addresses are EISA and PCI which go sniffing for boards. + + * In a multiboard system the position in the array determines which port + * devices are assigned to each board: + * board 0 is assigned ttyF0.. to ttyF63, + * board 1 is assigned ttyF64 to ttyF127, + * board 2 is assigned ttyF128 to ttyF191, + * board 3 is assigned ttyF192 to ttyF255. + * + * In PCI and EISA bus systems each range is mapped to card in + * monotonically increasing slot number order, ISA position is as specified + * here. + + * If the irqs are ALL set to 0,0,0,0 all boards operate in + * polled mode. For interrupt operation ISA boards require that the IRQ be + * specified, while PCI and EISA boards any nonzero entry + * will enable interrupts using the BIOS configured irq for the board. + * An invalid irq entry will default to polled mode for that card and print + * console warning. + + * When the driver is loaded as a module these setting can be overridden on the + * modprobe command line or on an option line in /etc/modprobe.conf. + * If the driver is built-in the configuration must be + * set here for ISA cards and address set to 1 and 2 for PCI and EISA. + * + * Here is an example that shows most if not all possibe combinations: + + *static ip2config_t ip2config = + *{ + * {11,1,0,0}, // irqs + * { // Addresses + * 0x0308, // Board 0, ttyF0 - ttyF63// ISA card at io=0x308, irq=11 + * 0x0001, // Board 1, ttyF64 - ttyF127//PCI card configured by BIOS + * 0x0000, // Board 2, ttyF128 - ttyF191// Slot skipped + * 0x0002 // Board 3, ttyF192 - ttyF255//EISA card configured by BIOS + * // but polled not irq driven + * } + *}; + */ + + /* this structure is zeroed out because the suggested method is to configure + * the driver as a module, set up the parameters with an options line in + * /etc/modprobe.conf and load with modprobe or kmod, the kernel + * module loader + */ + + /* This structure is NOW always initialized when the driver is initialized. + * Compiled in defaults MUST be added to the io and irq arrays in + * ip2.c. Those values are configurable from insmod parameters in the + * case of modules or from command line parameters (ip2=io,irq) when + * compiled in. + */ + +static ip2config_t ip2config = +{ + {0,0,0,0}, // irqs + { // Addresses + /* Do NOT set compile time defaults HERE! Use the arrays in + ip2.c! These WILL be overwritten! =mhw= */ + 0x0000, // Board 0, ttyF0 - ttyF63 + 0x0000, // Board 1, ttyF64 - ttyF127 + 0x0000, // Board 2, ttyF128 - ttyF191 + 0x0000 // Board 3, ttyF192 - ttyF255 + } +}; + +#endif diff --git a/drivers/staging/tty/ip2/ip2ioctl.h b/drivers/staging/tty/ip2/ip2ioctl.h new file mode 100644 index 000000000000..aa0a9da85e05 --- /dev/null +++ b/drivers/staging/tty/ip2/ip2ioctl.h @@ -0,0 +1,35 @@ +/******************************************************************************* +* +* (c) 1998 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Driver constants for configuration and tuning +* +* NOTES: +* +*******************************************************************************/ + +#ifndef IP2IOCTL_H +#define IP2IOCTL_H + +//************* +//* Constants * +//************* + +// High baud rates (if not defined elsewhere. +#ifndef B153600 +# define B153600 0010005 +#endif +#ifndef B307200 +# define B307200 0010006 +#endif +#ifndef B921600 +# define B921600 0010007 +#endif + +#endif diff --git a/drivers/staging/tty/ip2/ip2main.c b/drivers/staging/tty/ip2/ip2main.c new file mode 100644 index 000000000000..ea7a8fb08283 --- /dev/null +++ b/drivers/staging/tty/ip2/ip2main.c @@ -0,0 +1,3234 @@ +/* +* +* (c) 1999 by Computone Corporation +* +******************************************************************************** +* +* PACKAGE: Linux tty Device Driver for IntelliPort family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Mainline code for the device driver +* +*******************************************************************************/ +// ToDo: +// +// Fix the immediate DSS_NOW problem. +// Work over the channel stats return logic in ip2_ipl_ioctl so they +// make sense for all 256 possible channels and so the user space +// utilities will compile and work properly. +// +// Done: +// +// 1.2.14 /\/\|=mhw=|\/\/ +// Added bounds checking to ip2_ipl_ioctl to avoid potential terroristic acts. +// Changed the definition of ip2trace to be more consistent with kernel style +// Thanks to Andreas Dilger for these updates +// +// 1.2.13 /\/\|=mhw=|\/\/ +// DEVFS: Renamed ttf/{n} to tts/F{n} and cuf/{n} to cua/F{n} to conform +// to agreed devfs serial device naming convention. +// +// 1.2.12 /\/\|=mhw=|\/\/ +// Cleaned up some remove queue cut and paste errors +// +// 1.2.11 /\/\|=mhw=|\/\/ +// Clean up potential NULL pointer dereferences +// Clean up devfs registration +// Add kernel command line parsing for io and irq +// Compile defaults for io and irq are now set in ip2.c not ip2.h! +// Reworked poll_only hack for explicit parameter setting +// You must now EXPLICITLY set poll_only = 1 or set all irqs to 0 +// Merged ip2_loadmain and old_ip2_init +// Converted all instances of interruptible_sleep_on into queue calls +// Most of these had no race conditions but better to clean up now +// +// 1.2.10 /\/\|=mhw=|\/\/ +// Fixed the bottom half interrupt handler and enabled USE_IQI +// to split the interrupt handler into a formal top-half / bottom-half +// Fixed timing window on high speed processors that queued messages to +// the outbound mail fifo faster than the board could handle. +// +// 1.2.9 +// Four box EX was barfing on >128k kmalloc, made structure smaller by +// reducing output buffer size +// +// 1.2.8 +// Device file system support (MHW) +// +// 1.2.7 +// Fixed +// Reload of ip2 without unloading ip2main hangs system on cat of /proc/modules +// +// 1.2.6 +//Fixes DCD problems +// DCD was not reported when CLOCAL was set on call to TIOCMGET +// +//Enhancements: +// TIOCMGET requests and waits for status return +// No DSS interrupts enabled except for DCD when needed +// +// For internal use only +// +//#define IP2DEBUG_INIT +//#define IP2DEBUG_OPEN +//#define IP2DEBUG_WRITE +//#define IP2DEBUG_READ +//#define IP2DEBUG_IOCTL +//#define IP2DEBUG_IPL + +//#define IP2DEBUG_TRACE +//#define DEBUG_FIFO + +/************/ +/* Includes */ +/************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include + +#include "ip2types.h" +#include "ip2trace.h" +#include "ip2ioctl.h" +#include "ip2.h" +#include "i2ellis.h" +#include "i2lib.h" + +/***************** + * /proc/ip2mem * + *****************/ + +#include +#include + +static DEFINE_MUTEX(ip2_mutex); +static const struct file_operations ip2mem_proc_fops; +static const struct file_operations ip2_proc_fops; + +/********************/ +/* Type Definitions */ +/********************/ + +/*************/ +/* Constants */ +/*************/ + +/* String constants to identify ourselves */ +static const char pcName[] = "Computone IntelliPort Plus multiport driver"; +static const char pcVersion[] = "1.2.14"; + +/* String constants for port names */ +static const char pcDriver_name[] = "ip2"; +static const char pcIpl[] = "ip2ipl"; + +/***********************/ +/* Function Prototypes */ +/***********************/ + +/* Global module entry functions */ + +/* Private (static) functions */ +static int ip2_open(PTTY, struct file *); +static void ip2_close(PTTY, struct file *); +static int ip2_write(PTTY, const unsigned char *, int); +static int ip2_putchar(PTTY, unsigned char); +static void ip2_flush_chars(PTTY); +static int ip2_write_room(PTTY); +static int ip2_chars_in_buf(PTTY); +static void ip2_flush_buffer(PTTY); +static int ip2_ioctl(PTTY, UINT, ULONG); +static void ip2_set_termios(PTTY, struct ktermios *); +static void ip2_set_line_discipline(PTTY); +static void ip2_throttle(PTTY); +static void ip2_unthrottle(PTTY); +static void ip2_stop(PTTY); +static void ip2_start(PTTY); +static void ip2_hangup(PTTY); +static int ip2_tiocmget(struct tty_struct *tty); +static int ip2_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); +static int ip2_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount); + +static void set_irq(int, int); +static void ip2_interrupt_bh(struct work_struct *work); +static irqreturn_t ip2_interrupt(int irq, void *dev_id); +static void ip2_poll(unsigned long arg); +static inline void service_all_boards(void); +static void do_input(struct work_struct *); +static void do_status(struct work_struct *); + +static void ip2_wait_until_sent(PTTY,int); + +static void set_params (i2ChanStrPtr, struct ktermios *); +static int get_serial_info(i2ChanStrPtr, struct serial_struct __user *); +static int set_serial_info(i2ChanStrPtr, struct serial_struct __user *); + +static ssize_t ip2_ipl_read(struct file *, char __user *, size_t, loff_t *); +static ssize_t ip2_ipl_write(struct file *, const char __user *, size_t, loff_t *); +static long ip2_ipl_ioctl(struct file *, UINT, ULONG); +static int ip2_ipl_open(struct inode *, struct file *); + +static int DumpTraceBuffer(char __user *, int); +static int DumpFifoBuffer( char __user *, int); + +static void ip2_init_board(int, const struct firmware *); +static unsigned short find_eisa_board(int); +static int ip2_setup(char *str); + +/***************/ +/* Static Data */ +/***************/ + +static struct tty_driver *ip2_tty_driver; + +/* Here, then is a table of board pointers which the interrupt routine should + * scan through to determine who it must service. + */ +static unsigned short i2nBoards; // Number of boards here + +static i2eBordStrPtr i2BoardPtrTable[IP2_MAX_BOARDS]; + +static i2ChanStrPtr DevTable[IP2_MAX_PORTS]; +//DevTableMem just used to save addresses for kfree +static void *DevTableMem[IP2_MAX_BOARDS]; + +/* This is the driver descriptor for the ip2ipl device, which is used to + * download the loadware to the boards. + */ +static const struct file_operations ip2_ipl = { + .owner = THIS_MODULE, + .read = ip2_ipl_read, + .write = ip2_ipl_write, + .unlocked_ioctl = ip2_ipl_ioctl, + .open = ip2_ipl_open, + .llseek = noop_llseek, +}; + +static unsigned long irq_counter; +static unsigned long bh_counter; + +// Use immediate queue to service interrupts +#define USE_IQI +//#define USE_IQ // PCI&2.2 needs work + +/* The timer_list entry for our poll routine. If interrupt operation is not + * selected, the board is serviced periodically to see if anything needs doing. + */ +#define POLL_TIMEOUT (jiffies + 1) +static DEFINE_TIMER(PollTimer, ip2_poll, 0, 0); + +#ifdef IP2DEBUG_TRACE +/* Trace (debug) buffer data */ +#define TRACEMAX 1000 +static unsigned long tracebuf[TRACEMAX]; +static int tracestuff; +static int tracestrip; +static int tracewrap; +#endif + +/**********/ +/* Macros */ +/**********/ + +#ifdef IP2DEBUG_OPEN +#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] ttyc=%d, modc=%x -> %s\n", \ + tty->name,(pCh->flags), \ + tty->count,/*GET_USE_COUNT(module)*/0,s) +#else +#define DBG_CNT(s) +#endif + +/********/ +/* Code */ +/********/ + +#include "i2ellis.c" /* Extremely low-level interface services */ +#include "i2cmd.c" /* Standard loadware command definitions */ +#include "i2lib.c" /* High level interface services */ + +/* Configuration area for modprobe */ + +MODULE_AUTHOR("Doug McNash"); +MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); +MODULE_LICENSE("GPL"); + +#define MAX_CMD_STR 50 + +static int poll_only; +static char cmd[MAX_CMD_STR]; + +static int Eisa_irq; +static int Eisa_slot; + +static int iindx; +static char rirqs[IP2_MAX_BOARDS]; +static int Valid_Irqs[] = { 3, 4, 5, 7, 10, 11, 12, 15, 0}; + +/* Note: Add compiled in defaults to these arrays, not to the structure + in ip2.h any longer. That structure WILL get overridden + by these values, or command line values, or insmod values!!! =mhw= +*/ +static int io[IP2_MAX_BOARDS]; +static int irq[IP2_MAX_BOARDS] = { -1, -1, -1, -1 }; + +MODULE_AUTHOR("Doug McNash"); +MODULE_DESCRIPTION("Computone IntelliPort Plus Driver"); +module_param_array(irq, int, NULL, 0); +MODULE_PARM_DESC(irq, "Interrupts for IntelliPort Cards"); +module_param_array(io, int, NULL, 0); +MODULE_PARM_DESC(io, "I/O ports for IntelliPort Cards"); +module_param(poll_only, bool, 0); +MODULE_PARM_DESC(poll_only, "Do not use card interrupts"); +module_param_string(ip2, cmd, MAX_CMD_STR, 0); +MODULE_PARM_DESC(ip2, "Contains module parameter passed with 'ip2='"); + +/* for sysfs class support */ +static struct class *ip2_class; + +/* Some functions to keep track of what irqs we have */ + +static int __init is_valid_irq(int irq) +{ + int *i = Valid_Irqs; + + while (*i != 0 && *i != irq) + i++; + + return *i; +} + +static void __init mark_requested_irq(char irq) +{ + rirqs[iindx++] = irq; +} + +static int __exit clear_requested_irq(char irq) +{ + int i; + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + if (rirqs[i] == irq) { + rirqs[i] = 0; + return 1; + } + } + return 0; +} + +static int have_requested_irq(char irq) +{ + /* array init to zeros so 0 irq will not be requested as a side + * effect */ + int i; + for (i = 0; i < IP2_MAX_BOARDS; ++i) + if (rirqs[i] == irq) + return 1; + return 0; +} + +/******************************************************************************/ +/* Function: cleanup_module() */ +/* Parameters: None */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* This is a required entry point for an installable module. It has to return */ +/* the device and the driver to a passive state. It should not be necessary */ +/* to reset the board fully, especially as the loadware is downloaded */ +/* externally rather than in the driver. We just want to disable the board */ +/* and clear the loadware to a reset state. To allow this there has to be a */ +/* way to detect whether the board has the loadware running at init time to */ +/* handle subsequent installations of the driver. All memory allocated by the */ +/* driver should be returned since it may be unloaded from memory. */ +/******************************************************************************/ +static void __exit ip2_cleanup_module(void) +{ + int err; + int i; + + del_timer_sync(&PollTimer); + + /* Reset the boards we have. */ + for (i = 0; i < IP2_MAX_BOARDS; i++) + if (i2BoardPtrTable[i]) + iiReset(i2BoardPtrTable[i]); + + /* The following is done at most once, if any boards were installed. */ + for (i = 0; i < IP2_MAX_BOARDS; i++) { + if (i2BoardPtrTable[i]) { + iiResetDelay(i2BoardPtrTable[i]); + /* free io addresses and Tibet */ + release_region(ip2config.addr[i], 8); + device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); + device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, + 4 * i + 1)); + } + /* Disable and remove interrupt handler. */ + if (ip2config.irq[i] > 0 && + have_requested_irq(ip2config.irq[i])) { + free_irq(ip2config.irq[i], (void *)&pcName); + clear_requested_irq(ip2config.irq[i]); + } + } + class_destroy(ip2_class); + err = tty_unregister_driver(ip2_tty_driver); + if (err) + printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", + err); + put_tty_driver(ip2_tty_driver); + unregister_chrdev(IP2_IPL_MAJOR, pcIpl); + remove_proc_entry("ip2mem", NULL); + + /* free memory */ + for (i = 0; i < IP2_MAX_BOARDS; i++) { + void *pB; +#ifdef CONFIG_PCI + if (ip2config.type[i] == PCI && ip2config.pci_dev[i]) { + pci_disable_device(ip2config.pci_dev[i]); + pci_dev_put(ip2config.pci_dev[i]); + ip2config.pci_dev[i] = NULL; + } +#endif + pB = i2BoardPtrTable[i]; + if (pB != NULL) { + kfree(pB); + i2BoardPtrTable[i] = NULL; + } + if (DevTableMem[i] != NULL) { + kfree(DevTableMem[i]); + DevTableMem[i] = NULL; + } + } +} +module_exit(ip2_cleanup_module); + +static const struct tty_operations ip2_ops = { + .open = ip2_open, + .close = ip2_close, + .write = ip2_write, + .put_char = ip2_putchar, + .flush_chars = ip2_flush_chars, + .write_room = ip2_write_room, + .chars_in_buffer = ip2_chars_in_buf, + .flush_buffer = ip2_flush_buffer, + .ioctl = ip2_ioctl, + .throttle = ip2_throttle, + .unthrottle = ip2_unthrottle, + .set_termios = ip2_set_termios, + .set_ldisc = ip2_set_line_discipline, + .stop = ip2_stop, + .start = ip2_start, + .hangup = ip2_hangup, + .tiocmget = ip2_tiocmget, + .tiocmset = ip2_tiocmset, + .get_icount = ip2_get_icount, + .proc_fops = &ip2_proc_fops, +}; + +/******************************************************************************/ +/* Function: ip2_loadmain() */ +/* Parameters: irq, io from command line of insmod et. al. */ +/* pointer to fip firmware and firmware size for boards */ +/* Returns: Success (0) */ +/* */ +/* Description: */ +/* This was the required entry point for all drivers (now in ip2.c) */ +/* It performs all */ +/* initialisation of the devices and driver structures, and registers itself */ +/* with the relevant kernel modules. */ +/******************************************************************************/ +/* IRQF_DISABLED - if set blocks all interrupts else only this line */ +/* IRQF_SHARED - for shared irq PCI or maybe EISA only */ +/* SA_RANDOM - can be source for cert. random number generators */ +#define IP2_SA_FLAGS 0 + + +static const struct firmware *ip2_request_firmware(void) +{ + struct platform_device *pdev; + const struct firmware *fw; + + pdev = platform_device_register_simple("ip2", 0, NULL, 0); + if (IS_ERR(pdev)) { + printk(KERN_ERR "Failed to register platform device for ip2\n"); + return NULL; + } + if (request_firmware(&fw, "intelliport2.bin", &pdev->dev)) { + printk(KERN_ERR "Failed to load firmware 'intelliport2.bin'\n"); + fw = NULL; + } + platform_device_unregister(pdev); + return fw; +} + +/****************************************************************************** + * ip2_setup: + * str: kernel command line string + * + * Can't autoprobe the boards so user must specify configuration on + * kernel command line. Sane people build it modular but the others + * come here. + * + * Alternating pairs of io,irq for up to 4 boards. + * ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3 + * + * io=0 => No board + * io=1 => PCI + * io=2 => EISA + * else => ISA I/O address + * + * irq=0 or invalid for ISA will revert to polling mode + * + * Any value = -1, do not overwrite compiled in value. + * + ******************************************************************************/ +static int __init ip2_setup(char *str) +{ + int j, ints[10]; /* 4 boards, 2 parameters + 2 */ + unsigned int i; + + str = get_options(str, ARRAY_SIZE(ints), ints); + + for (i = 0, j = 1; i < 4; i++) { + if (j > ints[0]) + break; + if (ints[j] >= 0) + io[i] = ints[j]; + j++; + if (j > ints[0]) + break; + if (ints[j] >= 0) + irq[i] = ints[j]; + j++; + } + return 1; +} +__setup("ip2=", ip2_setup); + +static int __init ip2_loadmain(void) +{ + int i, j, box; + int err = 0; + i2eBordStrPtr pB = NULL; + int rc = -1; + const struct firmware *fw = NULL; + char *str; + + str = cmd; + + if (poll_only) { + /* Hard lock the interrupts to zero */ + irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0; + } + + /* Check module parameter with 'ip2=' has been passed or not */ + if (!poll_only && (!strncmp(str, "ip2=", 4))) + ip2_setup(str); + + ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0); + + /* process command line arguments to modprobe or + insmod i.e. iop & irqp */ + /* irqp and iop should ALWAYS be specified now... But we check + them individually just to be sure, anyways... */ + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + ip2config.addr[i] = io[i]; + if (irq[i] >= 0) + ip2config.irq[i] = irq[i]; + else + ip2config.irq[i] = 0; + /* This is a little bit of a hack. If poll_only=1 on command + line back in ip2.c OR all IRQs on all specified boards are + explicitly set to 0, then drop to poll only mode and override + PCI or EISA interrupts. This superceeds the old hack of + triggering if all interrupts were zero (like da default). + Still a hack but less prone to random acts of terrorism. + + What we really should do, now that the IRQ default is set + to -1, is to use 0 as a hard coded, do not probe. + + /\/\|=mhw=|\/\/ + */ + poll_only |= irq[i]; + } + poll_only = !poll_only; + + /* Announce our presence */ + printk(KERN_INFO "%s version %s\n", pcName, pcVersion); + + ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); + if (!ip2_tty_driver) + return -ENOMEM; + + /* Initialise all the boards we can find (up to the maximum). */ + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + switch (ip2config.addr[i]) { + case 0: /* skip this slot even if card is present */ + break; + default: /* ISA */ + /* ISA address must be specified */ + if (ip2config.addr[i] < 0x100 || + ip2config.addr[i] > 0x3f8) { + printk(KERN_ERR "IP2: Bad ISA board %d " + "address %x\n", i, + ip2config.addr[i]); + ip2config.addr[i] = 0; + break; + } + ip2config.type[i] = ISA; + + /* Check for valid irq argument, set for polling if + * invalid */ + if (ip2config.irq[i] && + !is_valid_irq(ip2config.irq[i])) { + printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n", + ip2config.irq[i]); + /* 0 is polling and is valid in that sense */ + ip2config.irq[i] = 0; + } + break; + case PCI: +#ifdef CONFIG_PCI + { + struct pci_dev *pdev = NULL; + u32 addr; + int status; + + pdev = pci_get_device(PCI_VENDOR_ID_COMPUTONE, + PCI_DEVICE_ID_COMPUTONE_IP2EX, pdev); + if (pdev == NULL) { + ip2config.addr[i] = 0; + printk(KERN_ERR "IP2: PCI board %d not " + "found\n", i); + break; + } + + if (pci_enable_device(pdev)) { + dev_err(&pdev->dev, "can't enable device\n"); + goto out; + } + ip2config.type[i] = PCI; + ip2config.pci_dev[i] = pci_dev_get(pdev); + status = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1, + &addr); + if (addr & 1) + ip2config.addr[i] = (USHORT)(addr & 0xfffe); + else + dev_err(&pdev->dev, "I/O address error\n"); + + ip2config.irq[i] = pdev->irq; +out: + pci_dev_put(pdev); + } +#else + printk(KERN_ERR "IP2: PCI card specified but PCI " + "support not enabled.\n"); + printk(KERN_ERR "IP2: Recompile kernel with CONFIG_PCI " + "defined!\n"); +#endif /* CONFIG_PCI */ + break; + case EISA: + ip2config.addr[i] = find_eisa_board(Eisa_slot + 1); + if (ip2config.addr[i] != 0) { + /* Eisa_irq set as side effect, boo */ + ip2config.type[i] = EISA; + } + ip2config.irq[i] = Eisa_irq; + break; + } /* switch */ + } /* for */ + + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + if (ip2config.addr[i]) { + pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL); + if (pB) { + i2BoardPtrTable[i] = pB; + iiSetAddress(pB, ip2config.addr[i], + ii2DelayTimer); + iiReset(pB); + } else + printk(KERN_ERR "IP2: board memory allocation " + "error\n"); + } + } + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + pB = i2BoardPtrTable[i]; + if (pB != NULL) { + iiResetDelay(pB); + break; + } + } + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + /* We don't want to request the firmware unless we have at + least one board */ + if (i2BoardPtrTable[i] != NULL) { + if (!fw) + fw = ip2_request_firmware(); + if (!fw) + break; + ip2_init_board(i, fw); + } + } + if (fw) + release_firmware(fw); + + ip2trace(ITRC_NO_PORT, ITRC_INIT, 2, 0); + + ip2_tty_driver->owner = THIS_MODULE; + ip2_tty_driver->name = "ttyF"; + ip2_tty_driver->driver_name = pcDriver_name; + ip2_tty_driver->major = IP2_TTY_MAJOR; + ip2_tty_driver->minor_start = 0; + ip2_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; + ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; + ip2_tty_driver->init_termios = tty_std_termios; + ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; + ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | + TTY_DRIVER_DYNAMIC_DEV; + tty_set_operations(ip2_tty_driver, &ip2_ops); + + ip2trace(ITRC_NO_PORT, ITRC_INIT, 3, 0); + + err = tty_register_driver(ip2_tty_driver); + if (err) { + printk(KERN_ERR "IP2: failed to register tty driver\n"); + put_tty_driver(ip2_tty_driver); + return err; /* leaking resources */ + } + + err = register_chrdev(IP2_IPL_MAJOR, pcIpl, &ip2_ipl); + if (err) { + printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", + err); + } else { + /* create the sysfs class */ + ip2_class = class_create(THIS_MODULE, "ip2"); + if (IS_ERR(ip2_class)) { + err = PTR_ERR(ip2_class); + goto out_chrdev; + } + } + /* Register the read_procmem thing */ + if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) { + printk(KERN_ERR "IP2: failed to register read_procmem\n"); + return -EIO; /* leaking resources */ + } + + ip2trace(ITRC_NO_PORT, ITRC_INIT, 4, 0); + /* Register the interrupt handler or poll handler, depending upon the + * specified interrupt. + */ + + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + if (ip2config.addr[i] == 0) + continue; + + pB = i2BoardPtrTable[i]; + if (pB != NULL) { + device_create(ip2_class, NULL, + MKDEV(IP2_IPL_MAJOR, 4 * i), + NULL, "ipl%d", i); + device_create(ip2_class, NULL, + MKDEV(IP2_IPL_MAJOR, 4 * i + 1), + NULL, "stat%d", i); + + for (box = 0; box < ABS_MAX_BOXES; box++) + for (j = 0; j < ABS_BIGGEST_BOX; j++) + if (pB->i2eChannelMap[box] & (1 << j)) + tty_register_device( + ip2_tty_driver, + j + ABS_BIGGEST_BOX * + (box+i*ABS_MAX_BOXES), + NULL); + } + + if (poll_only) { + /* Poll only forces driver to only use polling and + to ignore the probed PCI or EISA interrupts. */ + ip2config.irq[i] = CIR_POLL; + } + if (ip2config.irq[i] == CIR_POLL) { +retry: + if (!timer_pending(&PollTimer)) { + mod_timer(&PollTimer, POLL_TIMEOUT); + printk(KERN_INFO "IP2: polling\n"); + } + } else { + if (have_requested_irq(ip2config.irq[i])) + continue; + rc = request_irq(ip2config.irq[i], ip2_interrupt, + IP2_SA_FLAGS | + (ip2config.type[i] == PCI ? IRQF_SHARED : 0), + pcName, i2BoardPtrTable[i]); + if (rc) { + printk(KERN_ERR "IP2: request_irq failed: " + "error %d\n", rc); + ip2config.irq[i] = CIR_POLL; + printk(KERN_INFO "IP2: Polling %ld/sec.\n", + (POLL_TIMEOUT - jiffies)); + goto retry; + } + mark_requested_irq(ip2config.irq[i]); + /* Initialise the interrupt handler bottom half + * (aka slih). */ + } + } + + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + if (i2BoardPtrTable[i]) { + /* set and enable board interrupt */ + set_irq(i, ip2config.irq[i]); + } + } + + ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0); + + return 0; + +out_chrdev: + unregister_chrdev(IP2_IPL_MAJOR, "ip2"); + /* unregister and put tty here */ + return err; +} +module_init(ip2_loadmain); + +/******************************************************************************/ +/* Function: ip2_init_board() */ +/* Parameters: Index of board in configuration structure */ +/* Returns: Success (0) */ +/* */ +/* Description: */ +/* This function initializes the specified board. The loadware is copied to */ +/* the board, the channel structures are initialized, and the board details */ +/* are reported on the console. */ +/******************************************************************************/ +static void +ip2_init_board(int boardnum, const struct firmware *fw) +{ + int i; + int nports = 0, nboxes = 0; + i2ChanStrPtr pCh; + i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; + + if ( !iiInitialize ( pB ) ) { + printk ( KERN_ERR "IP2: Failed to initialize board at 0x%x, error %d\n", + pB->i2eBase, pB->i2eError ); + goto err_initialize; + } + printk(KERN_INFO "IP2: Board %d: addr=0x%x irq=%d\n", boardnum + 1, + ip2config.addr[boardnum], ip2config.irq[boardnum] ); + + if (!request_region( ip2config.addr[boardnum], 8, pcName )) { + printk(KERN_ERR "IP2: bad addr=0x%x\n", ip2config.addr[boardnum]); + goto err_initialize; + } + + if ( iiDownloadAll ( pB, (loadHdrStrPtr)fw->data, 1, fw->size ) + != II_DOWN_GOOD ) { + printk ( KERN_ERR "IP2: failed to download loadware\n" ); + goto err_release_region; + } else { + printk ( KERN_INFO "IP2: fv=%d.%d.%d lv=%d.%d.%d\n", + pB->i2ePom.e.porVersion, + pB->i2ePom.e.porRevision, + pB->i2ePom.e.porSubRev, pB->i2eLVersion, + pB->i2eLRevision, pB->i2eLSub ); + } + + switch ( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) { + + default: + printk( KERN_ERR "IP2: Unknown board type, ID = %x\n", + pB->i2ePom.e.porID ); + nports = 0; + goto err_release_region; + break; + + case POR_ID_II_4: /* IntelliPort-II, ISA-4 (4xRJ45) */ + printk ( KERN_INFO "IP2: ISA-4\n" ); + nports = 4; + break; + + case POR_ID_II_8: /* IntelliPort-II, 8-port using standard brick. */ + printk ( KERN_INFO "IP2: ISA-8 std\n" ); + nports = 8; + break; + + case POR_ID_II_8R: /* IntelliPort-II, 8-port using RJ11's (no CTS) */ + printk ( KERN_INFO "IP2: ISA-8 RJ11\n" ); + nports = 8; + break; + + case POR_ID_FIIEX: /* IntelliPort IIEX */ + { + int portnum = IP2_PORTS_PER_BOARD * boardnum; + int box; + + for( box = 0; box < ABS_MAX_BOXES; ++box ) { + if ( pB->i2eChannelMap[box] != 0 ) { + ++nboxes; + } + for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { + if ( pB->i2eChannelMap[box] & 1<< i ) { + ++nports; + } + } + } + DevTableMem[boardnum] = pCh = + kmalloc( sizeof(i2ChanStr) * nports, GFP_KERNEL ); + if ( !pCh ) { + printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); + goto err_release_region; + } + if ( !i2InitChannels( pB, nports, pCh ) ) { + printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); + kfree ( pCh ); + goto err_release_region; + } + pB->i2eChannelPtr = &DevTable[portnum]; + pB->i2eChannelCnt = ABS_MOST_PORTS; + + for( box = 0; box < ABS_MAX_BOXES; ++box, portnum += ABS_BIGGEST_BOX ) { + for( i = 0; i < ABS_BIGGEST_BOX; ++i ) { + if ( pB->i2eChannelMap[box] & (1 << i) ) { + DevTable[portnum + i] = pCh; + pCh->port_index = portnum + i; + pCh++; + } + } + } + printk(KERN_INFO "IP2: EX box=%d ports=%d %d bit\n", + nboxes, nports, pB->i2eDataWidth16 ? 16 : 8 ); + } + goto ex_exit; + } + DevTableMem[boardnum] = pCh = + kmalloc ( sizeof (i2ChanStr) * nports, GFP_KERNEL ); + if ( !pCh ) { + printk ( KERN_ERR "IP2: (i2_init_channel:) Out of memory.\n"); + goto err_release_region; + } + pB->i2eChannelPtr = pCh; + pB->i2eChannelCnt = nports; + if ( !i2InitChannels( pB, nports, pCh ) ) { + printk(KERN_ERR "IP2: i2InitChannels failed: %d\n",pB->i2eError); + kfree ( pCh ); + goto err_release_region; + } + pB->i2eChannelPtr = &DevTable[IP2_PORTS_PER_BOARD * boardnum]; + + for( i = 0; i < pB->i2eChannelCnt; ++i ) { + DevTable[IP2_PORTS_PER_BOARD * boardnum + i] = pCh; + pCh->port_index = (IP2_PORTS_PER_BOARD * boardnum) + i; + pCh++; + } +ex_exit: + INIT_WORK(&pB->tqueue_interrupt, ip2_interrupt_bh); + return; + +err_release_region: + release_region(ip2config.addr[boardnum], 8); +err_initialize: + kfree ( pB ); + i2BoardPtrTable[boardnum] = NULL; + return; +} + +/******************************************************************************/ +/* Function: find_eisa_board ( int start_slot ) */ +/* Parameters: First slot to check */ +/* Returns: Address of EISA IntelliPort II controller */ +/* */ +/* Description: */ +/* This function searches for an EISA IntelliPort controller, starting */ +/* from the specified slot number. If the motherboard is not identified as an */ +/* EISA motherboard, or no valid board ID is selected it returns 0. Otherwise */ +/* it returns the base address of the controller. */ +/******************************************************************************/ +static unsigned short +find_eisa_board( int start_slot ) +{ + int i, j; + unsigned int idm = 0; + unsigned int idp = 0; + unsigned int base = 0; + unsigned int value; + int setup_address; + int setup_irq; + int ismine = 0; + + /* + * First a check for an EISA motherboard, which we do by comparing the + * EISA ID registers for the system board and the first couple of slots. + * No slot ID should match the system board ID, but on an ISA or PCI + * machine the odds are that an empty bus will return similar values for + * each slot. + */ + i = 0x0c80; + value = (inb(i) << 24) + (inb(i+1) << 16) + (inb(i+2) << 8) + inb(i+3); + for( i = 0x1c80; i <= 0x4c80; i += 0x1000 ) { + j = (inb(i)<<24)+(inb(i+1)<<16)+(inb(i+2)<<8)+inb(i+3); + if ( value == j ) + return 0; + } + + /* + * OK, so we are inclined to believe that this is an EISA machine. Find + * an IntelliPort controller. + */ + for( i = start_slot; i < 16; i++ ) { + base = i << 12; + idm = (inb(base + 0xc80) << 8) | (inb(base + 0xc81) & 0xff); + idp = (inb(base + 0xc82) << 8) | (inb(base + 0xc83) & 0xff); + ismine = 0; + if ( idm == 0x0e8e ) { + if ( idp == 0x0281 || idp == 0x0218 ) { + ismine = 1; + } else if ( idp == 0x0282 || idp == 0x0283 ) { + ismine = 3; /* Can do edge-trigger */ + } + if ( ismine ) { + Eisa_slot = i; + break; + } + } + } + if ( !ismine ) + return 0; + + /* It's some sort of EISA card, but at what address is it configured? */ + + setup_address = base + 0xc88; + value = inb(base + 0xc86); + setup_irq = (value & 8) ? Valid_Irqs[value & 7] : 0; + + if ( (ismine & 2) && !(value & 0x10) ) { + ismine = 1; /* Could be edging, but not */ + } + + if ( Eisa_irq == 0 ) { + Eisa_irq = setup_irq; + } else if ( Eisa_irq != setup_irq ) { + printk ( KERN_ERR "IP2: EISA irq mismatch between EISA controllers\n" ); + } + +#ifdef IP2DEBUG_INIT +printk(KERN_DEBUG "Computone EISA board in slot %d, I.D. 0x%x%x, Address 0x%x", + base >> 12, idm, idp, setup_address); + if ( Eisa_irq ) { + printk(KERN_DEBUG ", Interrupt %d %s\n", + setup_irq, (ismine & 2) ? "(edge)" : "(level)"); + } else { + printk(KERN_DEBUG ", (polled)\n"); + } +#endif + return setup_address; +} + +/******************************************************************************/ +/* Function: set_irq() */ +/* Parameters: index to board in board table */ +/* IRQ to use */ +/* Returns: Success (0) */ +/* */ +/* Description: */ +/******************************************************************************/ +static void +set_irq( int boardnum, int boardIrq ) +{ + unsigned char tempCommand[16]; + i2eBordStrPtr pB = i2BoardPtrTable[boardnum]; + unsigned long flags; + + /* + * Notify the boards they may generate interrupts. This is done by + * sending an in-line command to channel 0 on each board. This is why + * the channels have to be defined already. For each board, if the + * interrupt has never been defined, we must do so NOW, directly, since + * board will not send flow control or even give an interrupt until this + * is done. If polling we must send 0 as the interrupt parameter. + */ + + // We will get an interrupt here at the end of this function + + iiDisableMailIrq(pB); + + /* We build up the entire packet header. */ + CHANNEL_OF(tempCommand) = 0; + PTYPE_OF(tempCommand) = PTYPE_INLINE; + CMD_COUNT_OF(tempCommand) = 2; + (CMD_OF(tempCommand))[0] = CMDVALUE_IRQ; + (CMD_OF(tempCommand))[1] = boardIrq; + /* + * Write to FIFO; don't bother to adjust fifo capacity for this, since + * board will respond almost immediately after SendMail hit. + */ + write_lock_irqsave(&pB->write_fifo_spinlock, flags); + iiWriteBuf(pB, tempCommand, 4); + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); + pB->i2eUsingIrq = boardIrq; + pB->i2eOutMailWaiting |= MB_OUT_STUFFED; + + /* Need to update number of boards before you enable mailbox int */ + ++i2nBoards; + + CHANNEL_OF(tempCommand) = 0; + PTYPE_OF(tempCommand) = PTYPE_BYPASS; + CMD_COUNT_OF(tempCommand) = 6; + (CMD_OF(tempCommand))[0] = 88; // SILO + (CMD_OF(tempCommand))[1] = 64; // chars + (CMD_OF(tempCommand))[2] = 32; // ms + + (CMD_OF(tempCommand))[3] = 28; // MAX_BLOCK + (CMD_OF(tempCommand))[4] = 64; // chars + + (CMD_OF(tempCommand))[5] = 87; // HW_TEST + write_lock_irqsave(&pB->write_fifo_spinlock, flags); + iiWriteBuf(pB, tempCommand, 8); + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); + + CHANNEL_OF(tempCommand) = 0; + PTYPE_OF(tempCommand) = PTYPE_BYPASS; + CMD_COUNT_OF(tempCommand) = 1; + (CMD_OF(tempCommand))[0] = 84; /* get BOX_IDS */ + iiWriteBuf(pB, tempCommand, 3); + +#ifdef XXX + // enable heartbeat for test porpoises + CHANNEL_OF(tempCommand) = 0; + PTYPE_OF(tempCommand) = PTYPE_BYPASS; + CMD_COUNT_OF(tempCommand) = 2; + (CMD_OF(tempCommand))[0] = 44; /* get ping */ + (CMD_OF(tempCommand))[1] = 200; /* 200 ms */ + write_lock_irqsave(&pB->write_fifo_spinlock, flags); + iiWriteBuf(pB, tempCommand, 4); + write_unlock_irqrestore(&pB->write_fifo_spinlock, flags); +#endif + + iiEnableMailIrq(pB); + iiSendPendingMail(pB); +} + +/******************************************************************************/ +/* Interrupt Handler Section */ +/******************************************************************************/ + +static inline void +service_all_boards(void) +{ + int i; + i2eBordStrPtr pB; + + /* Service every board on the list */ + for( i = 0; i < IP2_MAX_BOARDS; ++i ) { + pB = i2BoardPtrTable[i]; + if ( pB ) { + i2ServiceBoard( pB ); + } + } +} + + +/******************************************************************************/ +/* Function: ip2_interrupt_bh(work) */ +/* Parameters: work - pointer to the board structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* Service the board in a bottom half interrupt handler and then */ +/* reenable the board's interrupts if it has an IRQ number */ +/* */ +/******************************************************************************/ +static void +ip2_interrupt_bh(struct work_struct *work) +{ + i2eBordStrPtr pB = container_of(work, i2eBordStr, tqueue_interrupt); +// pB better well be set or we have a problem! We can only get +// here from the IMMEDIATE queue. Here, we process the boards. +// Checking pB doesn't cost much and it saves us from the sanity checkers. + + bh_counter++; + + if ( pB ) { + i2ServiceBoard( pB ); + if( pB->i2eUsingIrq ) { +// Re-enable his interrupts + iiEnableMailIrq(pB); + } + } +} + + +/******************************************************************************/ +/* Function: ip2_interrupt(int irq, void *dev_id) */ +/* Parameters: irq - interrupt number */ +/* pointer to optional device ID structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* Our task here is simply to identify each board which needs servicing. */ +/* If we are queuing then, queue it to be serviced, and disable its irq */ +/* mask otherwise process the board directly. */ +/* */ +/* We could queue by IRQ but that just complicates things on both ends */ +/* with very little gain in performance (how many instructions does */ +/* it take to iterate on the immediate queue). */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_irq_work(i2eBordStrPtr pB) +{ +#ifdef USE_IQI + if (NO_MAIL_HERE != ( pB->i2eStartMail = iiGetMail(pB))) { +// Disable his interrupt (will be enabled when serviced) +// This is mostly to protect from reentrancy. + iiDisableMailIrq(pB); + +// Park the board on the immediate queue for processing. + schedule_work(&pB->tqueue_interrupt); + +// Make sure the immediate queue is flagged to fire. + } +#else + +// We are using immediate servicing here. This sucks and can +// cause all sorts of havoc with ppp and others. The failsafe +// check on iiSendPendingMail could also throw a hairball. + + i2ServiceBoard( pB ); + +#endif /* USE_IQI */ +} + +static void +ip2_polled_interrupt(void) +{ + int i; + i2eBordStrPtr pB; + + ip2trace(ITRC_NO_PORT, ITRC_INTR, 99, 1, 0); + + /* Service just the boards on the list using this irq */ + for( i = 0; i < i2nBoards; ++i ) { + pB = i2BoardPtrTable[i]; + +// Only process those boards which match our IRQ. +// IRQ = 0 for polled boards, we won't poll "IRQ" boards + + if (pB && pB->i2eUsingIrq == 0) + ip2_irq_work(pB); + } + + ++irq_counter; + + ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); +} + +static irqreturn_t +ip2_interrupt(int irq, void *dev_id) +{ + i2eBordStrPtr pB = dev_id; + + ip2trace (ITRC_NO_PORT, ITRC_INTR, 99, 1, pB->i2eUsingIrq ); + + ip2_irq_work(pB); + + ++irq_counter; + + ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); + return IRQ_HANDLED; +} + +/******************************************************************************/ +/* Function: ip2_poll(unsigned long arg) */ +/* Parameters: ? */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* This function calls the library routine i2ServiceBoard for each board in */ +/* the board table. This is used instead of the interrupt routine when polled */ +/* mode is specified. */ +/******************************************************************************/ +static void +ip2_poll(unsigned long arg) +{ + ip2trace (ITRC_NO_PORT, ITRC_INTR, 100, 0 ); + + // Just polled boards, IRQ = 0 will hit all non-interrupt boards. + // It will NOT poll boards handled by hard interrupts. + // The issue of queued BH interrupts is handled in ip2_interrupt(). + ip2_polled_interrupt(); + + mod_timer(&PollTimer, POLL_TIMEOUT); + + ip2trace (ITRC_NO_PORT, ITRC_INTR, ITRC_RETURN, 0 ); +} + +static void do_input(struct work_struct *work) +{ + i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_input); + unsigned long flags; + + ip2trace(CHANN, ITRC_INPUT, 21, 0 ); + + // Data input + if ( pCh->pTTY != NULL ) { + read_lock_irqsave(&pCh->Ibuf_spinlock, flags); + if (!pCh->throttled && (pCh->Ibuf_stuff != pCh->Ibuf_strip)) { + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + i2Input( pCh ); + } else + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); + } else { + ip2trace(CHANN, ITRC_INPUT, 22, 0 ); + + i2InputFlush( pCh ); + } +} + +// code duplicated from n_tty (ldisc) +static inline void isig(int sig, struct tty_struct *tty, int flush) +{ + /* FIXME: This is completely bogus */ + if (tty->pgrp) + kill_pgrp(tty->pgrp, sig, 1); + if (flush || !L_NOFLSH(tty)) { + if ( tty->ldisc->ops->flush_buffer ) + tty->ldisc->ops->flush_buffer(tty); + i2InputFlush( tty->driver_data ); + } +} + +static void do_status(struct work_struct *work) +{ + i2ChanStrPtr pCh = container_of(work, i2ChanStr, tqueue_status); + int status; + + status = i2GetStatus( pCh, (I2_BRK|I2_PAR|I2_FRA|I2_OVR) ); + + ip2trace (CHANN, ITRC_STATUS, 21, 1, status ); + + if (pCh->pTTY && (status & (I2_BRK|I2_PAR|I2_FRA|I2_OVR)) ) { + if ( (status & I2_BRK) ) { + // code duplicated from n_tty (ldisc) + if (I_IGNBRK(pCh->pTTY)) + goto skip_this; + if (I_BRKINT(pCh->pTTY)) { + isig(SIGINT, pCh->pTTY, 1); + goto skip_this; + } + wake_up_interruptible(&pCh->pTTY->read_wait); + } +#ifdef NEVER_HAPPENS_AS_SETUP_XXX + // and can't work because we don't know the_char + // as the_char is reported on a separate path + // The intelligent board does this stuff as setup + { + char brkf = TTY_NORMAL; + unsigned char brkc = '\0'; + unsigned char tmp; + if ( (status & I2_BRK) ) { + brkf = TTY_BREAK; + brkc = '\0'; + } + else if (status & I2_PAR) { + brkf = TTY_PARITY; + brkc = the_char; + } else if (status & I2_FRA) { + brkf = TTY_FRAME; + brkc = the_char; + } else if (status & I2_OVR) { + brkf = TTY_OVERRUN; + brkc = the_char; + } + tmp = pCh->pTTY->real_raw; + pCh->pTTY->real_raw = 0; + pCh->pTTY->ldisc->ops.receive_buf( pCh->pTTY, &brkc, &brkf, 1 ); + pCh->pTTY->real_raw = tmp; + } +#endif /* NEVER_HAPPENS_AS_SETUP_XXX */ + } +skip_this: + + if ( status & (I2_DDCD | I2_DDSR | I2_DCTS | I2_DRI) ) { + wake_up_interruptible(&pCh->delta_msr_wait); + + if ( (pCh->flags & ASYNC_CHECK_CD) && (status & I2_DDCD) ) { + if ( status & I2_DCD ) { + if ( pCh->wopen ) { + wake_up_interruptible ( &pCh->open_wait ); + } + } else { + if (pCh->pTTY && (!(pCh->pTTY->termios->c_cflag & CLOCAL)) ) { + tty_hangup( pCh->pTTY ); + } + } + } + } + + ip2trace (CHANN, ITRC_STATUS, 26, 0 ); +} + +/******************************************************************************/ +/* Device Open/Close/Ioctl Entry Point Section */ +/******************************************************************************/ + +/******************************************************************************/ +/* Function: open_sanity_check() */ +/* Parameters: Pointer to tty structure */ +/* Pointer to file structure */ +/* Returns: Success or failure */ +/* */ +/* Description: */ +/* Verifies the structure magic numbers and cross links. */ +/******************************************************************************/ +#ifdef IP2DEBUG_OPEN +static void +open_sanity_check( i2ChanStrPtr pCh, i2eBordStrPtr pBrd ) +{ + if ( pBrd->i2eValid != I2E_MAGIC ) { + printk(KERN_ERR "IP2: invalid board structure\n" ); + } else if ( pBrd != pCh->pMyBord ) { + printk(KERN_ERR "IP2: board structure pointer mismatch (%p)\n", + pCh->pMyBord ); + } else if ( pBrd->i2eChannelCnt < pCh->port_index ) { + printk(KERN_ERR "IP2: bad device index (%d)\n", pCh->port_index ); + } else if (&((i2ChanStrPtr)pBrd->i2eChannelPtr)[pCh->port_index] != pCh) { + } else { + printk(KERN_INFO "IP2: all pointers check out!\n" ); + } +} +#endif + + +/******************************************************************************/ +/* Function: ip2_open() */ +/* Parameters: Pointer to tty structure */ +/* Pointer to file structure */ +/* Returns: Success or failure */ +/* */ +/* Description: (MANDATORY) */ +/* A successful device open has to run a gauntlet of checks before it */ +/* completes. After some sanity checking and pointer setup, the function */ +/* blocks until all conditions are satisfied. It then initialises the port to */ +/* the default characteristics and returns. */ +/******************************************************************************/ +static int +ip2_open( PTTY tty, struct file *pFile ) +{ + wait_queue_t wait; + int rc = 0; + int do_clocal = 0; + i2ChanStrPtr pCh = DevTable[tty->index]; + + ip2trace (tty->index, ITRC_OPEN, ITRC_ENTER, 0 ); + + if ( pCh == NULL ) { + return -ENODEV; + } + /* Setup pointer links in device and tty structures */ + pCh->pTTY = tty; + tty->driver_data = pCh; + +#ifdef IP2DEBUG_OPEN + printk(KERN_DEBUG \ + "IP2:open(tty=%p,pFile=%p):dev=%s,ch=%d,idx=%d\n", + tty, pFile, tty->name, pCh->infl.hd.i2sChannel, pCh->port_index); + open_sanity_check ( pCh, pCh->pMyBord ); +#endif + + i2QueueCommands(PTYPE_INLINE, pCh, 100, 3, CMD_DTRUP,CMD_RTSUP,CMD_DCD_REP); + pCh->dataSetOut |= (I2_DTR | I2_RTS); + serviceOutgoingFifo( pCh->pMyBord ); + + /* Block here until the port is ready (per serial and istallion) */ + /* + * 1. If the port is in the middle of closing wait for the completion + * and then return the appropriate error. + */ + init_waitqueue_entry(&wait, current); + add_wait_queue(&pCh->close_wait, &wait); + set_current_state( TASK_INTERRUPTIBLE ); + + if ( tty_hung_up_p(pFile) || ( pCh->flags & ASYNC_CLOSING )) { + if ( pCh->flags & ASYNC_CLOSING ) { + tty_unlock(); + schedule(); + tty_lock(); + } + if ( tty_hung_up_p(pFile) ) { + set_current_state( TASK_RUNNING ); + remove_wait_queue(&pCh->close_wait, &wait); + return( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS; + } + } + set_current_state( TASK_RUNNING ); + remove_wait_queue(&pCh->close_wait, &wait); + + /* + * 3. Handle a non-blocking open of a normal port. + */ + if ( (pFile->f_flags & O_NONBLOCK) || (tty->flags & (1<flags |= ASYNC_NORMAL_ACTIVE; + goto noblock; + } + /* + * 4. Now loop waiting for the port to be free and carrier present + * (if required). + */ + if ( tty->termios->c_cflag & CLOCAL ) + do_clocal = 1; + +#ifdef IP2DEBUG_OPEN + printk(KERN_DEBUG "OpenBlock: do_clocal = %d\n", do_clocal); +#endif + + ++pCh->wopen; + + init_waitqueue_entry(&wait, current); + add_wait_queue(&pCh->open_wait, &wait); + + for(;;) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); + pCh->dataSetOut |= (I2_DTR | I2_RTS); + set_current_state( TASK_INTERRUPTIBLE ); + serviceOutgoingFifo( pCh->pMyBord ); + if ( tty_hung_up_p(pFile) ) { + set_current_state( TASK_RUNNING ); + remove_wait_queue(&pCh->open_wait, &wait); + return ( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EBUSY : -ERESTARTSYS; + } + if (!(pCh->flags & ASYNC_CLOSING) && + (do_clocal || (pCh->dataSetIn & I2_DCD) )) { + rc = 0; + break; + } + +#ifdef IP2DEBUG_OPEN + printk(KERN_DEBUG "ASYNC_CLOSING = %s\n", + (pCh->flags & ASYNC_CLOSING)?"True":"False"); + printk(KERN_DEBUG "OpenBlock: waiting for CD or signal\n"); +#endif + ip2trace (CHANN, ITRC_OPEN, 3, 2, 0, + (pCh->flags & ASYNC_CLOSING) ); + /* check for signal */ + if (signal_pending(current)) { + rc = (( pCh->flags & ASYNC_HUP_NOTIFY ) ? -EAGAIN : -ERESTARTSYS); + break; + } + tty_unlock(); + schedule(); + tty_lock(); + } + set_current_state( TASK_RUNNING ); + remove_wait_queue(&pCh->open_wait, &wait); + + --pCh->wopen; //why count? + + ip2trace (CHANN, ITRC_OPEN, 4, 0 ); + + if (rc != 0 ) { + return rc; + } + pCh->flags |= ASYNC_NORMAL_ACTIVE; + +noblock: + + /* first open - Assign termios structure to port */ + if ( tty->count == 1 ) { + i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); + /* Now we must send the termios settings to the loadware */ + set_params( pCh, NULL ); + } + + /* + * Now set any i2lib options. These may go away if the i2lib code ends + * up rolled into the mainline. + */ + pCh->channelOptions |= CO_NBLOCK_WRITE; + +#ifdef IP2DEBUG_OPEN + printk (KERN_DEBUG "IP2: open completed\n" ); +#endif + serviceOutgoingFifo( pCh->pMyBord ); + + ip2trace (CHANN, ITRC_OPEN, ITRC_RETURN, 0 ); + + return 0; +} + +/******************************************************************************/ +/* Function: ip2_close() */ +/* Parameters: Pointer to tty structure */ +/* Pointer to file structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_close( PTTY tty, struct file *pFile ) +{ + i2ChanStrPtr pCh = tty->driver_data; + + if ( !pCh ) { + return; + } + + ip2trace (CHANN, ITRC_CLOSE, ITRC_ENTER, 0 ); + +#ifdef IP2DEBUG_OPEN + printk(KERN_DEBUG "IP2:close %s:\n",tty->name); +#endif + + if ( tty_hung_up_p ( pFile ) ) { + + ip2trace (CHANN, ITRC_CLOSE, 2, 1, 2 ); + + return; + } + if ( tty->count > 1 ) { /* not the last close */ + + ip2trace (CHANN, ITRC_CLOSE, 2, 1, 3 ); + + return; + } + pCh->flags |= ASYNC_CLOSING; // last close actually + + tty->closing = 1; + + if (pCh->ClosingWaitTime != ASYNC_CLOSING_WAIT_NONE) { + /* + * Before we drop DTR, make sure the transmitter has completely drained. + * This uses an timeout, after which the close + * completes. + */ + ip2_wait_until_sent(tty, pCh->ClosingWaitTime ); + } + /* + * At this point we stop accepting input. Here we flush the channel + * input buffer which will allow the board to send up more data. Any + * additional input is tossed at interrupt/poll time. + */ + i2InputFlush( pCh ); + + /* disable DSS reporting */ + i2QueueCommands(PTYPE_INLINE, pCh, 100, 4, + CMD_DCD_NREP, CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); + if (tty->termios->c_cflag & HUPCL) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); + pCh->dataSetOut &= ~(I2_DTR | I2_RTS); + i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); + } + + serviceOutgoingFifo ( pCh->pMyBord ); + + tty_ldisc_flush(tty); + tty_driver_flush_buffer(tty); + tty->closing = 0; + + pCh->pTTY = NULL; + + if (pCh->wopen) { + if (pCh->ClosingDelay) { + msleep_interruptible(jiffies_to_msecs(pCh->ClosingDelay)); + } + wake_up_interruptible(&pCh->open_wait); + } + + pCh->flags &=~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); + wake_up_interruptible(&pCh->close_wait); + +#ifdef IP2DEBUG_OPEN + DBG_CNT("ip2_close: after wakeups--"); +#endif + + + ip2trace (CHANN, ITRC_CLOSE, ITRC_RETURN, 1, 1 ); + + return; +} + +/******************************************************************************/ +/* Function: ip2_hangup() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_hangup ( PTTY tty ) +{ + i2ChanStrPtr pCh = tty->driver_data; + + if( !pCh ) { + return; + } + + ip2trace (CHANN, ITRC_HANGUP, ITRC_ENTER, 0 ); + + ip2_flush_buffer(tty); + + /* disable DSS reporting */ + + i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_DCD_NREP); + i2QueueCommands(PTYPE_INLINE, pCh, 0, 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); + if ( (tty->termios->c_cflag & HUPCL) ) { + i2QueueCommands(PTYPE_BYPASS, pCh, 0, 2, CMD_RTSDN, CMD_DTRDN); + pCh->dataSetOut &= ~(I2_DTR | I2_RTS); + i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); + } + i2QueueCommands(PTYPE_INLINE, pCh, 1, 3, + CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); + serviceOutgoingFifo ( pCh->pMyBord ); + + wake_up_interruptible ( &pCh->delta_msr_wait ); + + pCh->flags &= ~ASYNC_NORMAL_ACTIVE; + pCh->pTTY = NULL; + wake_up_interruptible ( &pCh->open_wait ); + + ip2trace (CHANN, ITRC_HANGUP, ITRC_RETURN, 0 ); +} + +/******************************************************************************/ +/******************************************************************************/ +/* Device Output Section */ +/******************************************************************************/ +/******************************************************************************/ + +/******************************************************************************/ +/* Function: ip2_write() */ +/* Parameters: Pointer to tty structure */ +/* Flag denoting data is in user (1) or kernel (0) space */ +/* Pointer to data */ +/* Number of bytes to write */ +/* Returns: Number of bytes actually written */ +/* */ +/* Description: (MANDATORY) */ +/* */ +/* */ +/******************************************************************************/ +static int +ip2_write( PTTY tty, const unsigned char *pData, int count) +{ + i2ChanStrPtr pCh = tty->driver_data; + int bytesSent = 0; + unsigned long flags; + + ip2trace (CHANN, ITRC_WRITE, ITRC_ENTER, 2, count, -1 ); + + /* Flush out any buffered data left over from ip2_putchar() calls. */ + ip2_flush_chars( tty ); + + /* This is the actual move bit. Make sure it does what we need!!!!! */ + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); + bytesSent = i2Output( pCh, pData, count); + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); + + ip2trace (CHANN, ITRC_WRITE, ITRC_RETURN, 1, bytesSent ); + + return bytesSent > 0 ? bytesSent : 0; +} + +/******************************************************************************/ +/* Function: ip2_putchar() */ +/* Parameters: Pointer to tty structure */ +/* Character to write */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static int +ip2_putchar( PTTY tty, unsigned char ch ) +{ + i2ChanStrPtr pCh = tty->driver_data; + unsigned long flags; + +// ip2trace (CHANN, ITRC_PUTC, ITRC_ENTER, 1, ch ); + + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); + pCh->Pbuf[pCh->Pbuf_stuff++] = ch; + if ( pCh->Pbuf_stuff == sizeof pCh->Pbuf ) { + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); + ip2_flush_chars( tty ); + } else + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); + return 1; + +// ip2trace (CHANN, ITRC_PUTC, ITRC_RETURN, 1, ch ); +} + +/******************************************************************************/ +/* Function: ip2_flush_chars() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/******************************************************************************/ +static void +ip2_flush_chars( PTTY tty ) +{ + int strip; + i2ChanStrPtr pCh = tty->driver_data; + unsigned long flags; + + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); + if ( pCh->Pbuf_stuff ) { + +// ip2trace (CHANN, ITRC_PUTC, 10, 1, strip ); + + // + // We may need to restart i2Output if it does not fullfill this request + // + strip = i2Output( pCh, pCh->Pbuf, pCh->Pbuf_stuff); + if ( strip != pCh->Pbuf_stuff ) { + memmove( pCh->Pbuf, &pCh->Pbuf[strip], pCh->Pbuf_stuff - strip ); + } + pCh->Pbuf_stuff -= strip; + } + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); +} + +/******************************************************************************/ +/* Function: ip2_write_room() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Number of bytes that the driver can accept */ +/* */ +/* Description: */ +/* */ +/******************************************************************************/ +static int +ip2_write_room ( PTTY tty ) +{ + int bytesFree; + i2ChanStrPtr pCh = tty->driver_data; + unsigned long flags; + + read_lock_irqsave(&pCh->Pbuf_spinlock, flags); + bytesFree = i2OutputFree( pCh ) - pCh->Pbuf_stuff; + read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); + + ip2trace (CHANN, ITRC_WRITE, 11, 1, bytesFree ); + + return ((bytesFree > 0) ? bytesFree : 0); +} + +/******************************************************************************/ +/* Function: ip2_chars_in_buf() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Number of bytes queued for transmission */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static int +ip2_chars_in_buf ( PTTY tty ) +{ + i2ChanStrPtr pCh = tty->driver_data; + int rc; + unsigned long flags; + + ip2trace (CHANN, ITRC_WRITE, 12, 1, pCh->Obuf_char_count + pCh->Pbuf_stuff ); + +#ifdef IP2DEBUG_WRITE + printk (KERN_DEBUG "IP2: chars in buffer = %d (%d,%d)\n", + pCh->Obuf_char_count + pCh->Pbuf_stuff, + pCh->Obuf_char_count, pCh->Pbuf_stuff ); +#endif + read_lock_irqsave(&pCh->Obuf_spinlock, flags); + rc = pCh->Obuf_char_count; + read_unlock_irqrestore(&pCh->Obuf_spinlock, flags); + read_lock_irqsave(&pCh->Pbuf_spinlock, flags); + rc += pCh->Pbuf_stuff; + read_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); + return rc; +} + +/******************************************************************************/ +/* Function: ip2_flush_buffer() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_flush_buffer( PTTY tty ) +{ + i2ChanStrPtr pCh = tty->driver_data; + unsigned long flags; + + ip2trace (CHANN, ITRC_FLUSH, ITRC_ENTER, 0 ); + +#ifdef IP2DEBUG_WRITE + printk (KERN_DEBUG "IP2: flush buffer\n" ); +#endif + write_lock_irqsave(&pCh->Pbuf_spinlock, flags); + pCh->Pbuf_stuff = 0; + write_unlock_irqrestore(&pCh->Pbuf_spinlock, flags); + i2FlushOutput( pCh ); + ip2_owake(tty); + + ip2trace (CHANN, ITRC_FLUSH, ITRC_RETURN, 0 ); + +} + +/******************************************************************************/ +/* Function: ip2_wait_until_sent() */ +/* Parameters: Pointer to tty structure */ +/* Timeout for wait. */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* This function is used in place of the normal tty_wait_until_sent, which */ +/* only waits for the driver buffers to be empty (or rather, those buffers */ +/* reported by chars_in_buffer) which doesn't work for IP2 due to the */ +/* indeterminate number of bytes buffered on the board. */ +/******************************************************************************/ +static void +ip2_wait_until_sent ( PTTY tty, int timeout ) +{ + int i = jiffies; + i2ChanStrPtr pCh = tty->driver_data; + + tty_wait_until_sent(tty, timeout ); + if ( (i = timeout - (jiffies -i)) > 0) + i2DrainOutput( pCh, i ); +} + +/******************************************************************************/ +/******************************************************************************/ +/* Device Input Section */ +/******************************************************************************/ +/******************************************************************************/ + +/******************************************************************************/ +/* Function: ip2_throttle() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_throttle ( PTTY tty ) +{ + i2ChanStrPtr pCh = tty->driver_data; + +#ifdef IP2DEBUG_READ + printk (KERN_DEBUG "IP2: throttle\n" ); +#endif + /* + * Signal the poll/interrupt handlers not to forward incoming data to + * the line discipline. This will cause the buffers to fill up in the + * library and thus cause the library routines to send the flow control + * stuff. + */ + pCh->throttled = 1; +} + +/******************************************************************************/ +/* Function: ip2_unthrottle() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_unthrottle ( PTTY tty ) +{ + i2ChanStrPtr pCh = tty->driver_data; + unsigned long flags; + +#ifdef IP2DEBUG_READ + printk (KERN_DEBUG "IP2: unthrottle\n" ); +#endif + + /* Pass incoming data up to the line discipline again. */ + pCh->throttled = 0; + i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); + serviceOutgoingFifo( pCh->pMyBord ); + read_lock_irqsave(&pCh->Ibuf_spinlock, flags); + if ( pCh->Ibuf_stuff != pCh->Ibuf_strip ) { + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); +#ifdef IP2DEBUG_READ + printk (KERN_DEBUG "i2Input called from unthrottle\n" ); +#endif + i2Input( pCh ); + } else + read_unlock_irqrestore(&pCh->Ibuf_spinlock, flags); +} + +static void +ip2_start ( PTTY tty ) +{ + i2ChanStrPtr pCh = DevTable[tty->index]; + + i2QueueCommands(PTYPE_BYPASS, pCh, 0, 1, CMD_RESUME); + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_UNSUSPEND); + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_RESUME); +#ifdef IP2DEBUG_WRITE + printk (KERN_DEBUG "IP2: start tx\n" ); +#endif +} + +static void +ip2_stop ( PTTY tty ) +{ + i2ChanStrPtr pCh = DevTable[tty->index]; + + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_SUSPEND); +#ifdef IP2DEBUG_WRITE + printk (KERN_DEBUG "IP2: stop tx\n" ); +#endif +} + +/******************************************************************************/ +/* Device Ioctl Section */ +/******************************************************************************/ + +static int ip2_tiocmget(struct tty_struct *tty) +{ + i2ChanStrPtr pCh = DevTable[tty->index]; +#ifdef ENABLE_DSSNOW + wait_queue_t wait; +#endif + + if (pCh == NULL) + return -ENODEV; + +/* + FIXME - the following code is causing a NULL pointer dereference in + 2.3.51 in an interrupt handler. It's suppose to prompt the board + to return the DSS signal status immediately. Why doesn't it do + the same thing in 2.2.14? +*/ + +/* This thing is still busted in the 1.2.12 driver on 2.4.x + and even hoses the serial console so the oops can be trapped. + /\/\|=mhw=|\/\/ */ + +#ifdef ENABLE_DSSNOW + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DSS_NOW); + + init_waitqueue_entry(&wait, current); + add_wait_queue(&pCh->dss_now_wait, &wait); + set_current_state( TASK_INTERRUPTIBLE ); + + serviceOutgoingFifo( pCh->pMyBord ); + + schedule(); + + set_current_state( TASK_RUNNING ); + remove_wait_queue(&pCh->dss_now_wait, &wait); + + if (signal_pending(current)) { + return -EINTR; + } +#endif + return ((pCh->dataSetOut & I2_RTS) ? TIOCM_RTS : 0) + | ((pCh->dataSetOut & I2_DTR) ? TIOCM_DTR : 0) + | ((pCh->dataSetIn & I2_DCD) ? TIOCM_CAR : 0) + | ((pCh->dataSetIn & I2_RI) ? TIOCM_RNG : 0) + | ((pCh->dataSetIn & I2_DSR) ? TIOCM_DSR : 0) + | ((pCh->dataSetIn & I2_CTS) ? TIOCM_CTS : 0); +} + +static int ip2_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + i2ChanStrPtr pCh = DevTable[tty->index]; + + if (pCh == NULL) + return -ENODEV; + + if (set & TIOCM_RTS) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSUP); + pCh->dataSetOut |= I2_RTS; + } + if (set & TIOCM_DTR) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRUP); + pCh->dataSetOut |= I2_DTR; + } + + if (clear & TIOCM_RTS) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_RTSDN); + pCh->dataSetOut &= ~I2_RTS; + } + if (clear & TIOCM_DTR) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DTRDN); + pCh->dataSetOut &= ~I2_DTR; + } + serviceOutgoingFifo( pCh->pMyBord ); + return 0; +} + +/******************************************************************************/ +/* Function: ip2_ioctl() */ +/* Parameters: Pointer to tty structure */ +/* Pointer to file structure */ +/* Command */ +/* Argument */ +/* Returns: Success or failure */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static int +ip2_ioctl ( PTTY tty, UINT cmd, ULONG arg ) +{ + wait_queue_t wait; + i2ChanStrPtr pCh = DevTable[tty->index]; + i2eBordStrPtr pB; + struct async_icount cprev, cnow; /* kernel counter temps */ + int rc = 0; + unsigned long flags; + void __user *argp = (void __user *)arg; + + if ( pCh == NULL ) + return -ENODEV; + + pB = pCh->pMyBord; + + ip2trace (CHANN, ITRC_IOCTL, ITRC_ENTER, 2, cmd, arg ); + +#ifdef IP2DEBUG_IOCTL + printk(KERN_DEBUG "IP2: ioctl cmd (%x), arg (%lx)\n", cmd, arg ); +#endif + + switch(cmd) { + case TIOCGSERIAL: + + ip2trace (CHANN, ITRC_IOCTL, 2, 1, rc ); + + rc = get_serial_info(pCh, argp); + if (rc) + return rc; + break; + + case TIOCSSERIAL: + + ip2trace (CHANN, ITRC_IOCTL, 3, 1, rc ); + + rc = set_serial_info(pCh, argp); + if (rc) + return rc; + break; + + case TCXONC: + rc = tty_check_change(tty); + if (rc) + return rc; + switch (arg) { + case TCOOFF: + //return -ENOIOCTLCMD; + break; + case TCOON: + //return -ENOIOCTLCMD; + break; + case TCIOFF: + if (STOP_CHAR(tty) != __DISABLED_CHAR) { + i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, + CMD_XMIT_NOW(STOP_CHAR(tty))); + } + break; + case TCION: + if (START_CHAR(tty) != __DISABLED_CHAR) { + i2QueueCommands( PTYPE_BYPASS, pCh, 100, 1, + CMD_XMIT_NOW(START_CHAR(tty))); + } + break; + default: + return -EINVAL; + } + return 0; + + case TCSBRK: /* SVID version: non-zero arg --> no break */ + rc = tty_check_change(tty); + + ip2trace (CHANN, ITRC_IOCTL, 4, 1, rc ); + + if (!rc) { + ip2_wait_until_sent(tty,0); + if (!arg) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SEND_BRK(250)); + serviceOutgoingFifo( pCh->pMyBord ); + } + } + break; + + case TCSBRKP: /* support for POSIX tcsendbreak() */ + rc = tty_check_change(tty); + + ip2trace (CHANN, ITRC_IOCTL, 5, 1, rc ); + + if (!rc) { + ip2_wait_until_sent(tty,0); + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, + CMD_SEND_BRK(arg ? arg*100 : 250)); + serviceOutgoingFifo ( pCh->pMyBord ); + } + break; + + case TIOCGSOFTCAR: + + ip2trace (CHANN, ITRC_IOCTL, 6, 1, rc ); + + rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *)argp); + if (rc) + return rc; + break; + + case TIOCSSOFTCAR: + + ip2trace (CHANN, ITRC_IOCTL, 7, 1, rc ); + + rc = get_user(arg,(unsigned long __user *) argp); + if (rc) + return rc; + tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) + | (arg ? CLOCAL : 0)); + + break; + + /* + * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - mask + * passed in arg for lines of interest (use |'ed TIOCM_RNG/DSR/CD/CTS + * for masking). Caller should use TIOCGICOUNT to see which one it was + */ + case TIOCMIWAIT: + write_lock_irqsave(&pB->read_fifo_spinlock, flags); + cprev = pCh->icount; /* note the counters on entry */ + write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 4, + CMD_DCD_REP, CMD_CTS_REP, CMD_DSR_REP, CMD_RI_REP); + init_waitqueue_entry(&wait, current); + add_wait_queue(&pCh->delta_msr_wait, &wait); + set_current_state( TASK_INTERRUPTIBLE ); + + serviceOutgoingFifo( pCh->pMyBord ); + for(;;) { + ip2trace (CHANN, ITRC_IOCTL, 10, 0 ); + + schedule(); + + ip2trace (CHANN, ITRC_IOCTL, 11, 0 ); + + /* see if a signal did it */ + if (signal_pending(current)) { + rc = -ERESTARTSYS; + break; + } + write_lock_irqsave(&pB->read_fifo_spinlock, flags); + cnow = pCh->icount; /* atomic copy */ + write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { + rc = -EIO; /* no change => rc */ + break; + } + if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || + ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || + ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || + ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { + rc = 0; + break; + } + cprev = cnow; + } + set_current_state( TASK_RUNNING ); + remove_wait_queue(&pCh->delta_msr_wait, &wait); + + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 3, + CMD_CTS_NREP, CMD_DSR_NREP, CMD_RI_NREP); + if ( ! (pCh->flags & ASYNC_CHECK_CD)) { + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DCD_NREP); + } + serviceOutgoingFifo( pCh->pMyBord ); + return rc; + break; + + /* + * The rest are not supported by this driver. By returning -ENOIOCTLCMD they + * will be passed to the line discipline for it to handle. + */ + case TIOCSERCONFIG: + case TIOCSERGWILD: + case TIOCSERGETLSR: + case TIOCSERSWILD: + case TIOCSERGSTRUCT: + case TIOCSERGETMULTI: + case TIOCSERSETMULTI: + + default: + ip2trace (CHANN, ITRC_IOCTL, 12, 0 ); + + rc = -ENOIOCTLCMD; + break; + } + + ip2trace (CHANN, ITRC_IOCTL, ITRC_RETURN, 0 ); + + return rc; +} + +static int ip2_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + i2ChanStrPtr pCh = DevTable[tty->index]; + i2eBordStrPtr pB; + struct async_icount cnow; /* kernel counter temp */ + unsigned long flags; + + if ( pCh == NULL ) + return -ENODEV; + + pB = pCh->pMyBord; + + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for RI where + * only 0->1 is counted. The controller is quite capable of counting + * both, but this done to preserve compatibility with the standard + * serial driver. + */ + + write_lock_irqsave(&pB->read_fifo_spinlock, flags); + cnow = pCh->icount; + write_unlock_irqrestore(&pB->read_fifo_spinlock, flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + return 0; +} + +/******************************************************************************/ +/* Function: GetSerialInfo() */ +/* Parameters: Pointer to channel structure */ +/* Pointer to old termios structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* This is to support the setserial command, and requires processing of the */ +/* standard Linux serial structure. */ +/******************************************************************************/ +static int +get_serial_info ( i2ChanStrPtr pCh, struct serial_struct __user *retinfo ) +{ + struct serial_struct tmp; + + memset ( &tmp, 0, sizeof(tmp) ); + tmp.type = pCh->pMyBord->channelBtypes.bid_value[(pCh->port_index & (IP2_PORTS_PER_BOARD-1))/16]; + if (BID_HAS_654(tmp.type)) { + tmp.type = PORT_16650; + } else { + tmp.type = PORT_CIRRUS; + } + tmp.line = pCh->port_index; + tmp.port = pCh->pMyBord->i2eBase; + tmp.irq = ip2config.irq[pCh->port_index/64]; + tmp.flags = pCh->flags; + tmp.baud_base = pCh->BaudBase; + tmp.close_delay = pCh->ClosingDelay; + tmp.closing_wait = pCh->ClosingWaitTime; + tmp.custom_divisor = pCh->BaudDivisor; + return copy_to_user(retinfo,&tmp,sizeof(*retinfo)); +} + +/******************************************************************************/ +/* Function: SetSerialInfo() */ +/* Parameters: Pointer to channel structure */ +/* Pointer to old termios structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* This function provides support for setserial, which uses the TIOCSSERIAL */ +/* ioctl. Not all setserial parameters are relevant. If the user attempts to */ +/* change the IRQ, address or type of the port the ioctl fails. */ +/******************************************************************************/ +static int +set_serial_info( i2ChanStrPtr pCh, struct serial_struct __user *new_info ) +{ + struct serial_struct ns; + int old_flags, old_baud_divisor; + + if (copy_from_user(&ns, new_info, sizeof (ns))) + return -EFAULT; + + /* + * We don't allow setserial to change IRQ, board address, type or baud + * base. Also line nunber as such is meaningless but we use it for our + * array index so it is fixed also. + */ + if ( (ns.irq != ip2config.irq[pCh->port_index]) + || ((int) ns.port != ((int) (pCh->pMyBord->i2eBase))) + || (ns.baud_base != pCh->BaudBase) + || (ns.line != pCh->port_index) ) { + return -EINVAL; + } + + old_flags = pCh->flags; + old_baud_divisor = pCh->BaudDivisor; + + if ( !capable(CAP_SYS_ADMIN) ) { + if ( ( ns.close_delay != pCh->ClosingDelay ) || + ( (ns.flags & ~ASYNC_USR_MASK) != + (pCh->flags & ~ASYNC_USR_MASK) ) ) { + return -EPERM; + } + + pCh->flags = (pCh->flags & ~ASYNC_USR_MASK) | + (ns.flags & ASYNC_USR_MASK); + pCh->BaudDivisor = ns.custom_divisor; + } else { + pCh->flags = (pCh->flags & ~ASYNC_FLAGS) | + (ns.flags & ASYNC_FLAGS); + pCh->BaudDivisor = ns.custom_divisor; + pCh->ClosingDelay = ns.close_delay * HZ/100; + pCh->ClosingWaitTime = ns.closing_wait * HZ/100; + } + + if ( ( (old_flags & ASYNC_SPD_MASK) != (pCh->flags & ASYNC_SPD_MASK) ) + || (old_baud_divisor != pCh->BaudDivisor) ) { + // Invalidate speed and reset parameters + set_params( pCh, NULL ); + } + + return 0; +} + +/******************************************************************************/ +/* Function: ip2_set_termios() */ +/* Parameters: Pointer to tty structure */ +/* Pointer to old termios structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_set_termios( PTTY tty, struct ktermios *old_termios ) +{ + i2ChanStrPtr pCh = (i2ChanStrPtr)tty->driver_data; + +#ifdef IP2DEBUG_IOCTL + printk (KERN_DEBUG "IP2: set termios %p\n", old_termios ); +#endif + + set_params( pCh, old_termios ); +} + +/******************************************************************************/ +/* Function: ip2_set_line_discipline() */ +/* Parameters: Pointer to tty structure */ +/* Returns: Nothing */ +/* */ +/* Description: Does nothing */ +/* */ +/* */ +/******************************************************************************/ +static void +ip2_set_line_discipline ( PTTY tty ) +{ +#ifdef IP2DEBUG_IOCTL + printk (KERN_DEBUG "IP2: set line discipline\n" ); +#endif + + ip2trace (((i2ChanStrPtr)tty->driver_data)->port_index, ITRC_IOCTL, 16, 0 ); + +} + +/******************************************************************************/ +/* Function: SetLine Characteristics() */ +/* Parameters: Pointer to channel structure */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* This routine is called to update the channel structure with the new line */ +/* characteristics, and send the appropriate commands to the board when they */ +/* change. */ +/******************************************************************************/ +static void +set_params( i2ChanStrPtr pCh, struct ktermios *o_tios ) +{ + tcflag_t cflag, iflag, lflag; + char stop_char, start_char; + struct ktermios dummy; + + lflag = pCh->pTTY->termios->c_lflag; + cflag = pCh->pTTY->termios->c_cflag; + iflag = pCh->pTTY->termios->c_iflag; + + if (o_tios == NULL) { + dummy.c_lflag = ~lflag; + dummy.c_cflag = ~cflag; + dummy.c_iflag = ~iflag; + o_tios = &dummy; + } + + { + switch ( cflag & CBAUD ) { + case B0: + i2QueueCommands( PTYPE_BYPASS, pCh, 100, 2, CMD_RTSDN, CMD_DTRDN); + pCh->dataSetOut &= ~(I2_DTR | I2_RTS); + i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_PAUSE(25)); + pCh->pTTY->termios->c_cflag |= (CBAUD & o_tios->c_cflag); + goto service_it; + break; + case B38400: + /* + * This is the speed that is overloaded with all the other high + * speeds, depending upon the flag settings. + */ + if ( ( pCh->flags & ASYNC_SPD_MASK ) == ASYNC_SPD_HI ) { + pCh->speed = CBR_57600; + } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI ) { + pCh->speed = CBR_115200; + } else if ( (pCh->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST ) { + pCh->speed = CBR_C1; + } else { + pCh->speed = CBR_38400; + } + break; + case B50: pCh->speed = CBR_50; break; + case B75: pCh->speed = CBR_75; break; + case B110: pCh->speed = CBR_110; break; + case B134: pCh->speed = CBR_134; break; + case B150: pCh->speed = CBR_150; break; + case B200: pCh->speed = CBR_200; break; + case B300: pCh->speed = CBR_300; break; + case B600: pCh->speed = CBR_600; break; + case B1200: pCh->speed = CBR_1200; break; + case B1800: pCh->speed = CBR_1800; break; + case B2400: pCh->speed = CBR_2400; break; + case B4800: pCh->speed = CBR_4800; break; + case B9600: pCh->speed = CBR_9600; break; + case B19200: pCh->speed = CBR_19200; break; + case B57600: pCh->speed = CBR_57600; break; + case B115200: pCh->speed = CBR_115200; break; + case B153600: pCh->speed = CBR_153600; break; + case B230400: pCh->speed = CBR_230400; break; + case B307200: pCh->speed = CBR_307200; break; + case B460800: pCh->speed = CBR_460800; break; + case B921600: pCh->speed = CBR_921600; break; + default: pCh->speed = CBR_9600; break; + } + if ( pCh->speed == CBR_C1 ) { + // Process the custom speed parameters. + int bps = pCh->BaudBase / pCh->BaudDivisor; + if ( bps == 921600 ) { + pCh->speed = CBR_921600; + } else { + bps = bps/10; + i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_BAUD_DEF1(bps) ); + } + } + i2QueueCommands( PTYPE_INLINE, pCh, 100, 1, CMD_SETBAUD(pCh->speed)); + + i2QueueCommands ( PTYPE_INLINE, pCh, 100, 2, CMD_DTRUP, CMD_RTSUP); + pCh->dataSetOut |= (I2_DTR | I2_RTS); + } + if ( (CSTOPB & cflag) ^ (CSTOPB & o_tios->c_cflag)) + { + i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, + CMD_SETSTOP( ( cflag & CSTOPB ) ? CST_2 : CST_1)); + } + if (((PARENB|PARODD) & cflag) ^ ((PARENB|PARODD) & o_tios->c_cflag)) + { + i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, + CMD_SETPAR( + (cflag & PARENB ? (cflag & PARODD ? CSP_OD : CSP_EV) : CSP_NP) + ) + ); + } + /* byte size and parity */ + if ( (CSIZE & cflag)^(CSIZE & o_tios->c_cflag)) + { + int datasize; + switch ( cflag & CSIZE ) { + case CS5: datasize = CSZ_5; break; + case CS6: datasize = CSZ_6; break; + case CS7: datasize = CSZ_7; break; + case CS8: datasize = CSZ_8; break; + default: datasize = CSZ_5; break; /* as per serial.c */ + } + i2QueueCommands ( PTYPE_INLINE, pCh, 100, 1, CMD_SETBITS(datasize) ); + } + /* Process CTS flow control flag setting */ + if ( (cflag & CRTSCTS) ) { + i2QueueCommands(PTYPE_INLINE, pCh, 100, + 2, CMD_CTSFL_ENAB, CMD_RTSFL_ENAB); + } else { + i2QueueCommands(PTYPE_INLINE, pCh, 100, + 2, CMD_CTSFL_DSAB, CMD_RTSFL_DSAB); + } + // + // Process XON/XOFF flow control flags settings + // + stop_char = STOP_CHAR(pCh->pTTY); + start_char = START_CHAR(pCh->pTTY); + + //////////// can't be \000 + if (stop_char == __DISABLED_CHAR ) + { + stop_char = ~__DISABLED_CHAR; + } + if (start_char == __DISABLED_CHAR ) + { + start_char = ~__DISABLED_CHAR; + } + ///////////////////////////////// + + if ( o_tios->c_cc[VSTART] != start_char ) + { + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXON(start_char)); + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXON(start_char)); + } + if ( o_tios->c_cc[VSTOP] != stop_char ) + { + i2QueueCommands(PTYPE_BYPASS, pCh, 100, 1, CMD_DEF_IXOFF(stop_char)); + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DEF_OXOFF(stop_char)); + } + if (stop_char == __DISABLED_CHAR ) + { + stop_char = ~__DISABLED_CHAR; //TEST123 + goto no_xoff; + } + if ((iflag & (IXOFF))^(o_tios->c_iflag & (IXOFF))) + { + if ( iflag & IXOFF ) { // Enable XOFF output flow control + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_XON)); + } else { // Disable XOFF output flow control +no_xoff: + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_OXON_OPT(COX_NONE)); + } + } + if (start_char == __DISABLED_CHAR ) + { + goto no_xon; + } + if ((iflag & (IXON|IXANY)) ^ (o_tios->c_iflag & (IXON|IXANY))) + { + if ( iflag & IXON ) { + if ( iflag & IXANY ) { // Enable XON/XANY output flow control + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XANY)); + } else { // Enable XON output flow control + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_XON)); + } + } else { // Disable XON output flow control +no_xon: + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_IXON_OPT(CIX_NONE)); + } + } + if ( (iflag & ISTRIP) ^ ( o_tios->c_iflag & (ISTRIP)) ) + { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, + CMD_ISTRIP_OPT((iflag & ISTRIP ? 1 : 0))); + } + if ( (iflag & INPCK) ^ ( o_tios->c_iflag & (INPCK)) ) + { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, + CMD_PARCHK((iflag & INPCK) ? CPK_ENAB : CPK_DSAB)); + } + + if ( (iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) + ^ ( o_tios->c_iflag & (IGNBRK|PARMRK|BRKINT|IGNPAR)) ) + { + char brkrpt = 0; + char parrpt = 0; + + if ( iflag & IGNBRK ) { /* Ignore breaks altogether */ + /* Ignore breaks altogether */ + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_NREP); + } else { + if ( iflag & BRKINT ) { + if ( iflag & PARMRK ) { + brkrpt = 0x0a; // exception an inline triple + } else { + brkrpt = 0x1a; // exception and NULL + } + brkrpt |= 0x04; // flush input + } else { + if ( iflag & PARMRK ) { + brkrpt = 0x0b; //POSIX triple \0377 \0 \0 + } else { + brkrpt = 0x01; // Null only + } + } + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_BRK_REP(brkrpt)); + } + + if (iflag & IGNPAR) { + parrpt = 0x20; + /* would be 2 for not cirrus bug */ + /* would be 0x20 cept for cirrus bug */ + } else { + if ( iflag & PARMRK ) { + /* + * Replace error characters with 3-byte sequence (\0377,\0,char) + */ + parrpt = 0x04 ; + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_ISTRIP_OPT((char)0)); + } else { + parrpt = 0x03; + } + } + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_SET_ERROR(parrpt)); + } + if (cflag & CLOCAL) { + // Status reporting fails for DCD if this is off + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_NREP); + pCh->flags &= ~ASYNC_CHECK_CD; + } else { + i2QueueCommands(PTYPE_INLINE, pCh, 100, 1, CMD_DCD_REP); + pCh->flags |= ASYNC_CHECK_CD; + } + +service_it: + i2DrainOutput( pCh, 100 ); +} + +/******************************************************************************/ +/* IPL Device Section */ +/******************************************************************************/ + +/******************************************************************************/ +/* Function: ip2_ipl_read() */ +/* Parameters: Pointer to device inode */ +/* Pointer to file structure */ +/* Pointer to data */ +/* Number of bytes to read */ +/* Returns: Success or failure */ +/* */ +/* Description: Ugly */ +/* */ +/* */ +/******************************************************************************/ + +static +ssize_t +ip2_ipl_read(struct file *pFile, char __user *pData, size_t count, loff_t *off ) +{ + unsigned int minor = iminor(pFile->f_path.dentry->d_inode); + int rc = 0; + +#ifdef IP2DEBUG_IPL + printk (KERN_DEBUG "IP2IPL: read %p, %d bytes\n", pData, count ); +#endif + + switch( minor ) { + case 0: // IPL device + rc = -EINVAL; + break; + case 1: // Status dump + rc = -EINVAL; + break; + case 2: // Ping device + rc = -EINVAL; + break; + case 3: // Trace device + rc = DumpTraceBuffer ( pData, count ); + break; + case 4: // Trace device + rc = DumpFifoBuffer ( pData, count ); + break; + default: + rc = -ENODEV; + break; + } + return rc; +} + +static int +DumpFifoBuffer ( char __user *pData, int count ) +{ +#ifdef DEBUG_FIFO + int rc; + rc = copy_to_user(pData, DBGBuf, count); + + printk(KERN_DEBUG "Last index %d\n", I ); + + return count; +#endif /* DEBUG_FIFO */ + return 0; +} + +static int +DumpTraceBuffer ( char __user *pData, int count ) +{ +#ifdef IP2DEBUG_TRACE + int rc; + int dumpcount; + int chunk; + int *pIndex = (int __user *)pData; + + if ( count < (sizeof(int) * 6) ) { + return -EIO; + } + rc = put_user(tracewrap, pIndex ); + rc = put_user(TRACEMAX, ++pIndex ); + rc = put_user(tracestrip, ++pIndex ); + rc = put_user(tracestuff, ++pIndex ); + pData += sizeof(int) * 6; + count -= sizeof(int) * 6; + + dumpcount = tracestuff - tracestrip; + if ( dumpcount < 0 ) { + dumpcount += TRACEMAX; + } + if ( dumpcount > count ) { + dumpcount = count; + } + chunk = TRACEMAX - tracestrip; + if ( dumpcount > chunk ) { + rc = copy_to_user(pData, &tracebuf[tracestrip], + chunk * sizeof(tracebuf[0]) ); + pData += chunk * sizeof(tracebuf[0]); + tracestrip = 0; + chunk = dumpcount - chunk; + } else { + chunk = dumpcount; + } + rc = copy_to_user(pData, &tracebuf[tracestrip], + chunk * sizeof(tracebuf[0]) ); + tracestrip += chunk; + tracewrap = 0; + + rc = put_user(tracestrip, ++pIndex ); + rc = put_user(tracestuff, ++pIndex ); + + return dumpcount; +#else + return 0; +#endif +} + +/******************************************************************************/ +/* Function: ip2_ipl_write() */ +/* Parameters: */ +/* Pointer to file structure */ +/* Pointer to data */ +/* Number of bytes to write */ +/* Returns: Success or failure */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static ssize_t +ip2_ipl_write(struct file *pFile, const char __user *pData, size_t count, loff_t *off) +{ +#ifdef IP2DEBUG_IPL + printk (KERN_DEBUG "IP2IPL: write %p, %d bytes\n", pData, count ); +#endif + return 0; +} + +/******************************************************************************/ +/* Function: ip2_ipl_ioctl() */ +/* Parameters: Pointer to device inode */ +/* Pointer to file structure */ +/* Command */ +/* Argument */ +/* Returns: Success or failure */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static long +ip2_ipl_ioctl (struct file *pFile, UINT cmd, ULONG arg ) +{ + unsigned int iplminor = iminor(pFile->f_path.dentry->d_inode); + int rc = 0; + void __user *argp = (void __user *)arg; + ULONG __user *pIndex = argp; + i2eBordStrPtr pB = i2BoardPtrTable[iplminor / 4]; + i2ChanStrPtr pCh; + +#ifdef IP2DEBUG_IPL + printk (KERN_DEBUG "IP2IPL: ioctl cmd %d, arg %ld\n", cmd, arg ); +#endif + + mutex_lock(&ip2_mutex); + + switch ( iplminor ) { + case 0: // IPL device + rc = -EINVAL; + break; + case 1: // Status dump + case 5: + case 9: + case 13: + switch ( cmd ) { + case 64: /* Driver - ip2stat */ + rc = put_user(-1, pIndex++ ); + rc = put_user(irq_counter, pIndex++ ); + rc = put_user(bh_counter, pIndex++ ); + break; + + case 65: /* Board - ip2stat */ + if ( pB ) { + rc = copy_to_user(argp, pB, sizeof(i2eBordStr)); + rc = put_user(inb(pB->i2eStatus), + (ULONG __user *)(arg + (ULONG)(&pB->i2eStatus) - (ULONG)pB ) ); + } else { + rc = -ENODEV; + } + break; + + default: + if (cmd < IP2_MAX_PORTS) { + pCh = DevTable[cmd]; + if ( pCh ) + { + rc = copy_to_user(argp, pCh, sizeof(i2ChanStr)); + if (rc) + rc = -EFAULT; + } else { + rc = -ENODEV; + } + } else { + rc = -EINVAL; + } + } + break; + + case 2: // Ping device + rc = -EINVAL; + break; + case 3: // Trace device + /* + * akpm: This used to write a whole bunch of function addresses + * to userspace, which generated lots of put_user() warnings. + * I killed it all. Just return "success" and don't do + * anything. + */ + if (cmd == 1) + rc = 0; + else + rc = -EINVAL; + break; + + default: + rc = -ENODEV; + break; + } + mutex_unlock(&ip2_mutex); + return rc; +} + +/******************************************************************************/ +/* Function: ip2_ipl_open() */ +/* Parameters: Pointer to device inode */ +/* Pointer to file structure */ +/* Returns: Success or failure */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +static int +ip2_ipl_open( struct inode *pInode, struct file *pFile ) +{ + +#ifdef IP2DEBUG_IPL + printk (KERN_DEBUG "IP2IPL: open\n" ); +#endif + return 0; +} + +static int +proc_ip2mem_show(struct seq_file *m, void *v) +{ + i2eBordStrPtr pB; + i2ChanStrPtr pCh; + PTTY tty; + int i; + +#define FMTLINE "%3d: 0x%08x 0x%08x 0%011o 0%011o\n" +#define FMTLIN2 " 0x%04x 0x%04x tx flow 0x%x\n" +#define FMTLIN3 " 0x%04x 0x%04x rc flow\n" + + seq_printf(m,"\n"); + + for( i = 0; i < IP2_MAX_BOARDS; ++i ) { + pB = i2BoardPtrTable[i]; + if ( pB ) { + seq_printf(m,"board %d:\n",i); + seq_printf(m,"\tFifo rem: %d mty: %x outM %x\n", + pB->i2eFifoRemains,pB->i2eWaitingForEmptyFifo,pB->i2eOutMailWaiting); + } + } + + seq_printf(m,"#: tty flags, port flags, cflags, iflags\n"); + for (i=0; i < IP2_MAX_PORTS; i++) { + pCh = DevTable[i]; + if (pCh) { + tty = pCh->pTTY; + if (tty && tty->count) { + seq_printf(m,FMTLINE,i,(int)tty->flags,pCh->flags, + tty->termios->c_cflag,tty->termios->c_iflag); + + seq_printf(m,FMTLIN2, + pCh->outfl.asof,pCh->outfl.room,pCh->channelNeeds); + seq_printf(m,FMTLIN3,pCh->infl.asof,pCh->infl.room); + } + } + } + return 0; +} + +static int proc_ip2mem_open(struct inode *inode, struct file *file) +{ + return single_open(file, proc_ip2mem_show, NULL); +} + +static const struct file_operations ip2mem_proc_fops = { + .owner = THIS_MODULE, + .open = proc_ip2mem_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/* + * This is the handler for /proc/tty/driver/ip2 + * + * This stretch of code has been largely plagerized from at least three + * different sources including ip2mkdev.c and a couple of other drivers. + * The bugs are all mine. :-) =mhw= + */ +static int ip2_proc_show(struct seq_file *m, void *v) +{ + int i, j, box; + int boxes = 0; + int ports = 0; + int tports = 0; + i2eBordStrPtr pB; + char *sep; + + seq_printf(m, "ip2info: 1.0 driver: %s\n", pcVersion); + seq_printf(m, "Driver: SMajor=%d CMajor=%d IMajor=%d MaxBoards=%d MaxBoxes=%d MaxPorts=%d\n", + IP2_TTY_MAJOR, IP2_CALLOUT_MAJOR, IP2_IPL_MAJOR, + IP2_MAX_BOARDS, ABS_MAX_BOXES, ABS_BIGGEST_BOX); + + for( i = 0; i < IP2_MAX_BOARDS; ++i ) { + /* This need to be reset for a board by board count... */ + boxes = 0; + pB = i2BoardPtrTable[i]; + if( pB ) { + switch( pB->i2ePom.e.porID & ~POR_ID_RESERVED ) + { + case POR_ID_FIIEX: + seq_printf(m, "Board %d: EX ports=", i); + sep = ""; + for( box = 0; box < ABS_MAX_BOXES; ++box ) + { + ports = 0; + + if( pB->i2eChannelMap[box] != 0 ) ++boxes; + for( j = 0; j < ABS_BIGGEST_BOX; ++j ) + { + if( pB->i2eChannelMap[box] & 1<< j ) { + ++ports; + } + } + seq_printf(m, "%s%d", sep, ports); + sep = ","; + tports += ports; + } + seq_printf(m, " boxes=%d width=%d", boxes, pB->i2eDataWidth16 ? 16 : 8); + break; + + case POR_ID_II_4: + seq_printf(m, "Board %d: ISA-4 ports=4 boxes=1", i); + tports = ports = 4; + break; + + case POR_ID_II_8: + seq_printf(m, "Board %d: ISA-8-std ports=8 boxes=1", i); + tports = ports = 8; + break; + + case POR_ID_II_8R: + seq_printf(m, "Board %d: ISA-8-RJ11 ports=8 boxes=1", i); + tports = ports = 8; + break; + + default: + seq_printf(m, "Board %d: unknown", i); + /* Don't try and probe for minor numbers */ + tports = ports = 0; + } + + } else { + /* Don't try and probe for minor numbers */ + seq_printf(m, "Board %d: vacant", i); + tports = ports = 0; + } + + if( tports ) { + seq_puts(m, " minors="); + sep = ""; + for ( box = 0; box < ABS_MAX_BOXES; ++box ) + { + for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) + { + if ( pB->i2eChannelMap[box] & (1 << j) ) + { + seq_printf(m, "%s%d", sep, + j + ABS_BIGGEST_BOX * + (box+i*ABS_MAX_BOXES)); + sep = ","; + } + } + } + } + seq_putc(m, '\n'); + } + return 0; + } + +static int ip2_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, ip2_proc_show, NULL); +} + +static const struct file_operations ip2_proc_fops = { + .owner = THIS_MODULE, + .open = ip2_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/******************************************************************************/ +/* Function: ip2trace() */ +/* Parameters: Value to add to trace buffer */ +/* Returns: Nothing */ +/* */ +/* Description: */ +/* */ +/* */ +/******************************************************************************/ +#ifdef IP2DEBUG_TRACE +void +ip2trace (unsigned short pn, unsigned char cat, unsigned char label, unsigned long codes, ...) +{ + long flags; + unsigned long *pCode = &codes; + union ip2breadcrumb bc; + i2ChanStrPtr pCh; + + + tracebuf[tracestuff++] = jiffies; + if ( tracestuff == TRACEMAX ) { + tracestuff = 0; + } + if ( tracestuff == tracestrip ) { + if ( ++tracestrip == TRACEMAX ) { + tracestrip = 0; + } + ++tracewrap; + } + + bc.hdr.port = 0xff & pn; + bc.hdr.cat = cat; + bc.hdr.codes = (unsigned char)( codes & 0xff ); + bc.hdr.label = label; + tracebuf[tracestuff++] = bc.value; + + for (;;) { + if ( tracestuff == TRACEMAX ) { + tracestuff = 0; + } + if ( tracestuff == tracestrip ) { + if ( ++tracestrip == TRACEMAX ) { + tracestrip = 0; + } + ++tracewrap; + } + + if ( !codes-- ) + break; + + tracebuf[tracestuff++] = *++pCode; + } +} +#endif + + +MODULE_LICENSE("GPL"); + +static struct pci_device_id ip2main_pci_tbl[] __devinitdata __used = { + { PCI_DEVICE(PCI_VENDOR_ID_COMPUTONE, PCI_DEVICE_ID_COMPUTONE_IP2EX) }, + { } +}; + +MODULE_DEVICE_TABLE(pci, ip2main_pci_tbl); + +MODULE_FIRMWARE("intelliport2.bin"); diff --git a/drivers/staging/tty/ip2/ip2trace.h b/drivers/staging/tty/ip2/ip2trace.h new file mode 100644 index 000000000000..da20435dc8a6 --- /dev/null +++ b/drivers/staging/tty/ip2/ip2trace.h @@ -0,0 +1,42 @@ + +// +union ip2breadcrumb +{ + struct { + unsigned char port, cat, codes, label; + } __attribute__ ((packed)) hdr; + unsigned long value; +}; + +#define ITRC_NO_PORT 0xFF +#define CHANN (pCh->port_index) + +#define ITRC_ERROR '!' +#define ITRC_INIT 'A' +#define ITRC_OPEN 'B' +#define ITRC_CLOSE 'C' +#define ITRC_DRAIN 'D' +#define ITRC_IOCTL 'E' +#define ITRC_FLUSH 'F' +#define ITRC_STATUS 'G' +#define ITRC_HANGUP 'H' +#define ITRC_INTR 'I' +#define ITRC_SFLOW 'J' +#define ITRC_SBCMD 'K' +#define ITRC_SICMD 'L' +#define ITRC_MODEM 'M' +#define ITRC_INPUT 'N' +#define ITRC_OUTPUT 'O' +#define ITRC_PUTC 'P' +#define ITRC_QUEUE 'Q' +#define ITRC_STFLW 'R' +#define ITRC_SFIFO 'S' +#define ITRC_VERIFY 'V' +#define ITRC_WRITE 'W' + +#define ITRC_ENTER 0x00 +#define ITRC_RETURN 0xFF + +#define ITRC_QUEUE_ROOM 2 +#define ITRC_QUEUE_CMD 6 + diff --git a/drivers/staging/tty/ip2/ip2types.h b/drivers/staging/tty/ip2/ip2types.h new file mode 100644 index 000000000000..9d67b260b2f6 --- /dev/null +++ b/drivers/staging/tty/ip2/ip2types.h @@ -0,0 +1,57 @@ +/******************************************************************************* +* +* (c) 1998 by Computone Corporation +* +******************************************************************************** +* +* +* PACKAGE: Linux tty Device Driver for IntelliPort II family of multiport +* serial I/O controllers. +* +* DESCRIPTION: Driver constants and type definitions. +* +* NOTES: +* +*******************************************************************************/ +#ifndef IP2TYPES_H +#define IP2TYPES_H + +//************* +//* Constants * +//************* + +// Define some limits for this driver. Ports per board is a hardware limitation +// that will not change. Current hardware limits this to 64 ports per board. +// Boards per driver is a self-imposed limit. +// +#define IP2_MAX_BOARDS 4 +#define IP2_PORTS_PER_BOARD ABS_MOST_PORTS +#define IP2_MAX_PORTS (IP2_MAX_BOARDS*IP2_PORTS_PER_BOARD) + +#define ISA 0 +#define PCI 1 +#define EISA 2 + +//******************** +//* Type Definitions * +//******************** + +typedef struct tty_struct * PTTY; +typedef wait_queue_head_t PWAITQ; + +typedef unsigned char UCHAR; +typedef unsigned int UINT; +typedef unsigned short USHORT; +typedef unsigned long ULONG; + +typedef struct +{ + short irq[IP2_MAX_BOARDS]; + unsigned short addr[IP2_MAX_BOARDS]; + int type[IP2_MAX_BOARDS]; +#ifdef CONFIG_PCI + struct pci_dev *pci_dev[IP2_MAX_BOARDS]; +#endif +} ip2config_t; + +#endif diff --git a/drivers/staging/tty/istallion.c b/drivers/staging/tty/istallion.c new file mode 100644 index 000000000000..0b266272cccd --- /dev/null +++ b/drivers/staging/tty/istallion.c @@ -0,0 +1,4507 @@ +/*****************************************************************************/ + +/* + * istallion.c -- stallion intelligent multiport serial driver. + * + * Copyright (C) 1996-1999 Stallion Technologies + * Copyright (C) 1994-1996 Greg Ungerer. + * + * This code is loosely based on the Linux serial driver, written by + * Linus Torvalds, Theodore T'so and others. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +/*****************************************************************************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +/*****************************************************************************/ + +/* + * Define different board types. Not all of the following board types + * are supported by this driver. But I will use the standard "assigned" + * board numbers. Currently supported boards are abbreviated as: + * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and + * STAL = Stallion. + */ +#define BRD_UNKNOWN 0 +#define BRD_STALLION 1 +#define BRD_BRUMBY4 2 +#define BRD_ONBOARD2 3 +#define BRD_ONBOARD 4 +#define BRD_ONBOARDE 7 +#define BRD_ECP 23 +#define BRD_ECPE 24 +#define BRD_ECPMC 25 +#define BRD_ECPPCI 29 + +#define BRD_BRUMBY BRD_BRUMBY4 + +/* + * Define a configuration structure to hold the board configuration. + * Need to set this up in the code (for now) with the boards that are + * to be configured into the system. This is what needs to be modified + * when adding/removing/modifying boards. Each line entry in the + * stli_brdconf[] array is a board. Each line contains io/irq/memory + * ranges for that board (as well as what type of board it is). + * Some examples: + * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, + * This line will configure an EasyConnection 8/64 at io address 2a0, + * and shared memory address of cc000. Multiple EasyConnection 8/64 + * boards can share the same shared memory address space. No interrupt + * is required for this board type. + * Another example: + * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, + * This line will configure an EasyConnection 8/64 EISA in slot 5 and + * shared memory address of 0x80000000 (2 GByte). Multiple + * EasyConnection 8/64 EISA boards can share the same shared memory + * address space. No interrupt is required for this board type. + * Another example: + * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, + * This line will configure an ONboard (ISA type) at io address 240, + * and shared memory address of d0000. Multiple ONboards can share + * the same shared memory address space. No interrupt required. + * Another example: + * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, + * This line will configure a Brumby board (any number of ports!) at + * io address 360 and shared memory address of c8000. All Brumby boards + * configured into a system must have their own separate io and memory + * addresses. No interrupt is required. + * Another example: + * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, + * This line will configure an original Stallion board at io address 330 + * and shared memory address d0000 (this would only be valid for a "V4.0" + * or Rev.O Stallion board). All Stallion boards configured into the + * system must have their own separate io and memory addresses. No + * interrupt is required. + */ + +struct stlconf { + int brdtype; + int ioaddr1; + int ioaddr2; + unsigned long memaddr; + int irq; + int irqtype; +}; + +static unsigned int stli_nrbrds; + +/* stli_lock must NOT be taken holding brd_lock */ +static spinlock_t stli_lock; /* TTY logic lock */ +static spinlock_t brd_lock; /* Board logic lock */ + +/* + * There is some experimental EISA board detection code in this driver. + * By default it is disabled, but for those that want to try it out, + * then set the define below to be 1. + */ +#define STLI_EISAPROBE 0 + +/*****************************************************************************/ + +/* + * Define some important driver characteristics. Device major numbers + * allocated as per Linux Device Registry. + */ +#ifndef STL_SIOMEMMAJOR +#define STL_SIOMEMMAJOR 28 +#endif +#ifndef STL_SERIALMAJOR +#define STL_SERIALMAJOR 24 +#endif +#ifndef STL_CALLOUTMAJOR +#define STL_CALLOUTMAJOR 25 +#endif + +/*****************************************************************************/ + +/* + * Define our local driver identity first. Set up stuff to deal with + * all the local structures required by a serial tty driver. + */ +static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; +static char *stli_drvname = "istallion"; +static char *stli_drvversion = "5.6.0"; +static char *stli_serialname = "ttyE"; + +static struct tty_driver *stli_serial; +static const struct tty_port_operations stli_port_ops; + +#define STLI_TXBUFSIZE 4096 + +/* + * Use a fast local buffer for cooked characters. Typically a whole + * bunch of cooked characters come in for a port, 1 at a time. So we + * save those up into a local buffer, then write out the whole lot + * with a large memcpy. Just use 1 buffer for all ports, since its + * use it is only need for short periods of time by each port. + */ +static char *stli_txcookbuf; +static int stli_txcooksize; +static int stli_txcookrealsize; +static struct tty_struct *stli_txcooktty; + +/* + * Define a local default termios struct. All ports will be created + * with this termios initially. Basically all it defines is a raw port + * at 9600 baud, 8 data bits, no parity, 1 stop bit. + */ +static struct ktermios stli_deftermios = { + .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), + .c_cc = INIT_C_CC, + .c_ispeed = 9600, + .c_ospeed = 9600, +}; + +/* + * Define global stats structures. Not used often, and can be + * re-used for each stats call. + */ +static comstats_t stli_comstats; +static combrd_t stli_brdstats; +static struct asystats stli_cdkstats; + +/*****************************************************************************/ + +static DEFINE_MUTEX(stli_brdslock); +static struct stlibrd *stli_brds[STL_MAXBRDS]; + +static int stli_shared; + +/* + * Per board state flags. Used with the state field of the board struct. + * Not really much here... All we need to do is keep track of whether + * the board has been detected, and whether it is actually running a slave + * or not. + */ +#define BST_FOUND 0 +#define BST_STARTED 1 +#define BST_PROBED 2 + +/* + * Define the set of port state flags. These are marked for internal + * state purposes only, usually to do with the state of communications + * with the slave. Most of them need to be updated atomically, so always + * use the bit setting operations (unless protected by cli/sti). + */ +#define ST_OPENING 2 +#define ST_CLOSING 3 +#define ST_CMDING 4 +#define ST_TXBUSY 5 +#define ST_RXING 6 +#define ST_DOFLUSHRX 7 +#define ST_DOFLUSHTX 8 +#define ST_DOSIGS 9 +#define ST_RXSTOP 10 +#define ST_GETSIGS 11 + +/* + * Define an array of board names as printable strings. Handy for + * referencing boards when printing trace and stuff. + */ +static char *stli_brdnames[] = { + "Unknown", + "Stallion", + "Brumby", + "ONboard-MC", + "ONboard", + "Brumby", + "Brumby", + "ONboard-EI", + NULL, + "ONboard", + "ONboard-MC", + "ONboard-MC", + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + "EasyIO", + "EC8/32-AT", + "EC8/32-MC", + "EC8/64-AT", + "EC8/64-EI", + "EC8/64-MC", + "EC8/32-PCI", + "EC8/64-PCI", + "EasyIO-PCI", + "EC/RA-PCI", +}; + +/*****************************************************************************/ + +/* + * Define some string labels for arguments passed from the module + * load line. These allow for easy board definitions, and easy + * modification of the io, memory and irq resoucres. + */ + +static char *board0[8]; +static char *board1[8]; +static char *board2[8]; +static char *board3[8]; + +static char **stli_brdsp[] = { + (char **) &board0, + (char **) &board1, + (char **) &board2, + (char **) &board3 +}; + +/* + * Define a set of common board names, and types. This is used to + * parse any module arguments. + */ + +static struct stlibrdtype { + char *name; + int type; +} stli_brdstr[] = { + { "stallion", BRD_STALLION }, + { "1", BRD_STALLION }, + { "brumby", BRD_BRUMBY }, + { "brumby4", BRD_BRUMBY }, + { "brumby/4", BRD_BRUMBY }, + { "brumby-4", BRD_BRUMBY }, + { "brumby8", BRD_BRUMBY }, + { "brumby/8", BRD_BRUMBY }, + { "brumby-8", BRD_BRUMBY }, + { "brumby16", BRD_BRUMBY }, + { "brumby/16", BRD_BRUMBY }, + { "brumby-16", BRD_BRUMBY }, + { "2", BRD_BRUMBY }, + { "onboard2", BRD_ONBOARD2 }, + { "onboard-2", BRD_ONBOARD2 }, + { "onboard/2", BRD_ONBOARD2 }, + { "onboard-mc", BRD_ONBOARD2 }, + { "onboard/mc", BRD_ONBOARD2 }, + { "onboard-mca", BRD_ONBOARD2 }, + { "onboard/mca", BRD_ONBOARD2 }, + { "3", BRD_ONBOARD2 }, + { "onboard", BRD_ONBOARD }, + { "onboardat", BRD_ONBOARD }, + { "4", BRD_ONBOARD }, + { "onboarde", BRD_ONBOARDE }, + { "onboard-e", BRD_ONBOARDE }, + { "onboard/e", BRD_ONBOARDE }, + { "onboard-ei", BRD_ONBOARDE }, + { "onboard/ei", BRD_ONBOARDE }, + { "7", BRD_ONBOARDE }, + { "ecp", BRD_ECP }, + { "ecpat", BRD_ECP }, + { "ec8/64", BRD_ECP }, + { "ec8/64-at", BRD_ECP }, + { "ec8/64-isa", BRD_ECP }, + { "23", BRD_ECP }, + { "ecpe", BRD_ECPE }, + { "ecpei", BRD_ECPE }, + { "ec8/64-e", BRD_ECPE }, + { "ec8/64-ei", BRD_ECPE }, + { "24", BRD_ECPE }, + { "ecpmc", BRD_ECPMC }, + { "ec8/64-mc", BRD_ECPMC }, + { "ec8/64-mca", BRD_ECPMC }, + { "25", BRD_ECPMC }, + { "ecppci", BRD_ECPPCI }, + { "ec/ra", BRD_ECPPCI }, + { "ec/ra-pc", BRD_ECPPCI }, + { "ec/ra-pci", BRD_ECPPCI }, + { "29", BRD_ECPPCI }, +}; + +/* + * Define the module agruments. + */ +MODULE_AUTHOR("Greg Ungerer"); +MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); +MODULE_LICENSE("GPL"); + + +module_param_array(board0, charp, NULL, 0); +MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); +module_param_array(board1, charp, NULL, 0); +MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); +module_param_array(board2, charp, NULL, 0); +MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); +module_param_array(board3, charp, NULL, 0); +MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); + +#if STLI_EISAPROBE != 0 +/* + * Set up a default memory address table for EISA board probing. + * The default addresses are all bellow 1Mbyte, which has to be the + * case anyway. They should be safe, since we only read values from + * them, and interrupts are disabled while we do it. If the higher + * memory support is compiled in then we also try probing around + * the 1Gb, 2Gb and 3Gb areas as well... + */ +static unsigned long stli_eisamemprobeaddrs[] = { + 0xc0000, 0xd0000, 0xe0000, 0xf0000, + 0x80000000, 0x80010000, 0x80020000, 0x80030000, + 0x40000000, 0x40010000, 0x40020000, 0x40030000, + 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, + 0xff000000, 0xff010000, 0xff020000, 0xff030000, +}; + +static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); +#endif + +/* + * Define the Stallion PCI vendor and device IDs. + */ +#ifndef PCI_DEVICE_ID_ECRA +#define PCI_DEVICE_ID_ECRA 0x0004 +#endif + +static struct pci_device_id istallion_pci_tbl[] = { + { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); + +static struct pci_driver stli_pcidriver; + +/*****************************************************************************/ + +/* + * Hardware configuration info for ECP boards. These defines apply + * to the directly accessible io ports of the ECP. There is a set of + * defines for each ECP board type, ISA, EISA, MCA and PCI. + */ +#define ECP_IOSIZE 4 + +#define ECP_MEMSIZE (128 * 1024) +#define ECP_PCIMEMSIZE (256 * 1024) + +#define ECP_ATPAGESIZE (4 * 1024) +#define ECP_MCPAGESIZE (4 * 1024) +#define ECP_EIPAGESIZE (64 * 1024) +#define ECP_PCIPAGESIZE (64 * 1024) + +#define STL_EISAID 0x8c4e + +/* + * Important defines for the ISA class of ECP board. + */ +#define ECP_ATIREG 0 +#define ECP_ATCONFR 1 +#define ECP_ATMEMAR 2 +#define ECP_ATMEMPR 3 +#define ECP_ATSTOP 0x1 +#define ECP_ATINTENAB 0x10 +#define ECP_ATENABLE 0x20 +#define ECP_ATDISABLE 0x00 +#define ECP_ATADDRMASK 0x3f000 +#define ECP_ATADDRSHFT 12 + +/* + * Important defines for the EISA class of ECP board. + */ +#define ECP_EIIREG 0 +#define ECP_EIMEMARL 1 +#define ECP_EICONFR 2 +#define ECP_EIMEMARH 3 +#define ECP_EIENABLE 0x1 +#define ECP_EIDISABLE 0x0 +#define ECP_EISTOP 0x4 +#define ECP_EIEDGE 0x00 +#define ECP_EILEVEL 0x80 +#define ECP_EIADDRMASKL 0x00ff0000 +#define ECP_EIADDRSHFTL 16 +#define ECP_EIADDRMASKH 0xff000000 +#define ECP_EIADDRSHFTH 24 +#define ECP_EIBRDENAB 0xc84 + +#define ECP_EISAID 0x4 + +/* + * Important defines for the Micro-channel class of ECP board. + * (It has a lot in common with the ISA boards.) + */ +#define ECP_MCIREG 0 +#define ECP_MCCONFR 1 +#define ECP_MCSTOP 0x20 +#define ECP_MCENABLE 0x80 +#define ECP_MCDISABLE 0x00 + +/* + * Important defines for the PCI class of ECP board. + * (It has a lot in common with the other ECP boards.) + */ +#define ECP_PCIIREG 0 +#define ECP_PCICONFR 1 +#define ECP_PCISTOP 0x01 + +/* + * Hardware configuration info for ONboard and Brumby boards. These + * defines apply to the directly accessible io ports of these boards. + */ +#define ONB_IOSIZE 16 +#define ONB_MEMSIZE (64 * 1024) +#define ONB_ATPAGESIZE (64 * 1024) +#define ONB_MCPAGESIZE (64 * 1024) +#define ONB_EIMEMSIZE (128 * 1024) +#define ONB_EIPAGESIZE (64 * 1024) + +/* + * Important defines for the ISA class of ONboard board. + */ +#define ONB_ATIREG 0 +#define ONB_ATMEMAR 1 +#define ONB_ATCONFR 2 +#define ONB_ATSTOP 0x4 +#define ONB_ATENABLE 0x01 +#define ONB_ATDISABLE 0x00 +#define ONB_ATADDRMASK 0xff0000 +#define ONB_ATADDRSHFT 16 + +#define ONB_MEMENABLO 0 +#define ONB_MEMENABHI 0x02 + +/* + * Important defines for the EISA class of ONboard board. + */ +#define ONB_EIIREG 0 +#define ONB_EIMEMARL 1 +#define ONB_EICONFR 2 +#define ONB_EIMEMARH 3 +#define ONB_EIENABLE 0x1 +#define ONB_EIDISABLE 0x0 +#define ONB_EISTOP 0x4 +#define ONB_EIEDGE 0x00 +#define ONB_EILEVEL 0x80 +#define ONB_EIADDRMASKL 0x00ff0000 +#define ONB_EIADDRSHFTL 16 +#define ONB_EIADDRMASKH 0xff000000 +#define ONB_EIADDRSHFTH 24 +#define ONB_EIBRDENAB 0xc84 + +#define ONB_EISAID 0x1 + +/* + * Important defines for the Brumby boards. They are pretty simple, + * there is not much that is programmably configurable. + */ +#define BBY_IOSIZE 16 +#define BBY_MEMSIZE (64 * 1024) +#define BBY_PAGESIZE (16 * 1024) + +#define BBY_ATIREG 0 +#define BBY_ATCONFR 1 +#define BBY_ATSTOP 0x4 + +/* + * Important defines for the Stallion boards. They are pretty simple, + * there is not much that is programmably configurable. + */ +#define STAL_IOSIZE 16 +#define STAL_MEMSIZE (64 * 1024) +#define STAL_PAGESIZE (64 * 1024) + +/* + * Define the set of status register values for EasyConnection panels. + * The signature will return with the status value for each panel. From + * this we can determine what is attached to the board - before we have + * actually down loaded any code to it. + */ +#define ECH_PNLSTATUS 2 +#define ECH_PNL16PORT 0x20 +#define ECH_PNLIDMASK 0x07 +#define ECH_PNLXPID 0x40 +#define ECH_PNLINTRPEND 0x80 + +/* + * Define some macros to do things to the board. Even those these boards + * are somewhat related there is often significantly different ways of + * doing some operation on it (like enable, paging, reset, etc). So each + * board class has a set of functions which do the commonly required + * operations. The macros below basically just call these functions, + * generally checking for a NULL function - which means that the board + * needs nothing done to it to achieve this operation! + */ +#define EBRDINIT(brdp) \ + if (brdp->init != NULL) \ + (* brdp->init)(brdp) + +#define EBRDENABLE(brdp) \ + if (brdp->enable != NULL) \ + (* brdp->enable)(brdp); + +#define EBRDDISABLE(brdp) \ + if (brdp->disable != NULL) \ + (* brdp->disable)(brdp); + +#define EBRDINTR(brdp) \ + if (brdp->intr != NULL) \ + (* brdp->intr)(brdp); + +#define EBRDRESET(brdp) \ + if (brdp->reset != NULL) \ + (* brdp->reset)(brdp); + +#define EBRDGETMEMPTR(brdp,offset) \ + (* brdp->getmemptr)(brdp, offset, __LINE__) + +/* + * Define the maximal baud rate, and the default baud base for ports. + */ +#define STL_MAXBAUD 460800 +#define STL_BAUDBASE 115200 +#define STL_CLOSEDELAY (5 * HZ / 10) + +/*****************************************************************************/ + +/* + * Define macros to extract a brd or port number from a minor number. + */ +#define MINOR2BRD(min) (((min) & 0xc0) >> 6) +#define MINOR2PORT(min) ((min) & 0x3f) + +/*****************************************************************************/ + +/* + * Prototype all functions in this driver! + */ + +static int stli_parsebrd(struct stlconf *confp, char **argp); +static int stli_open(struct tty_struct *tty, struct file *filp); +static void stli_close(struct tty_struct *tty, struct file *filp); +static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); +static int stli_putchar(struct tty_struct *tty, unsigned char ch); +static void stli_flushchars(struct tty_struct *tty); +static int stli_writeroom(struct tty_struct *tty); +static int stli_charsinbuffer(struct tty_struct *tty); +static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); +static void stli_settermios(struct tty_struct *tty, struct ktermios *old); +static void stli_throttle(struct tty_struct *tty); +static void stli_unthrottle(struct tty_struct *tty); +static void stli_stop(struct tty_struct *tty); +static void stli_start(struct tty_struct *tty); +static void stli_flushbuffer(struct tty_struct *tty); +static int stli_breakctl(struct tty_struct *tty, int state); +static void stli_waituntilsent(struct tty_struct *tty, int timeout); +static void stli_sendxchar(struct tty_struct *tty, char ch); +static void stli_hangup(struct tty_struct *tty); + +static int stli_brdinit(struct stlibrd *brdp); +static int stli_startbrd(struct stlibrd *brdp); +static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); +static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); +static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg); +static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); +static void stli_poll(unsigned long arg); +static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); +static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp); +static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); +static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); +static int stli_setport(struct tty_struct *tty); +static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); +static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); +static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); +static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); +static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); +static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); +static long stli_mktiocm(unsigned long sigvalue); +static void stli_read(struct stlibrd *brdp, struct stliport *portp); +static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); +static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp); +static int stli_getbrdstats(combrd_t __user *bp); +static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp); +static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp); +static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); +static int stli_getportstruct(struct stliport __user *arg); +static int stli_getbrdstruct(struct stlibrd __user *arg); +static struct stlibrd *stli_allocbrd(void); + +static void stli_ecpinit(struct stlibrd *brdp); +static void stli_ecpenable(struct stlibrd *brdp); +static void stli_ecpdisable(struct stlibrd *brdp); +static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_ecpreset(struct stlibrd *brdp); +static void stli_ecpintr(struct stlibrd *brdp); +static void stli_ecpeiinit(struct stlibrd *brdp); +static void stli_ecpeienable(struct stlibrd *brdp); +static void stli_ecpeidisable(struct stlibrd *brdp); +static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_ecpeireset(struct stlibrd *brdp); +static void stli_ecpmcenable(struct stlibrd *brdp); +static void stli_ecpmcdisable(struct stlibrd *brdp); +static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_ecpmcreset(struct stlibrd *brdp); +static void stli_ecppciinit(struct stlibrd *brdp); +static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_ecppcireset(struct stlibrd *brdp); + +static void stli_onbinit(struct stlibrd *brdp); +static void stli_onbenable(struct stlibrd *brdp); +static void stli_onbdisable(struct stlibrd *brdp); +static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_onbreset(struct stlibrd *brdp); +static void stli_onbeinit(struct stlibrd *brdp); +static void stli_onbeenable(struct stlibrd *brdp); +static void stli_onbedisable(struct stlibrd *brdp); +static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_onbereset(struct stlibrd *brdp); +static void stli_bbyinit(struct stlibrd *brdp); +static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_bbyreset(struct stlibrd *brdp); +static void stli_stalinit(struct stlibrd *brdp); +static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); +static void stli_stalreset(struct stlibrd *brdp); + +static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); + +static int stli_initecp(struct stlibrd *brdp); +static int stli_initonb(struct stlibrd *brdp); +#if STLI_EISAPROBE != 0 +static int stli_eisamemprobe(struct stlibrd *brdp); +#endif +static int stli_initports(struct stlibrd *brdp); + +/*****************************************************************************/ + +/* + * Define the driver info for a user level shared memory device. This + * device will work sort of like the /dev/kmem device - except that it + * will give access to the shared memory on the Stallion intelligent + * board. This is also a very useful debugging tool. + */ +static const struct file_operations stli_fsiomem = { + .owner = THIS_MODULE, + .read = stli_memread, + .write = stli_memwrite, + .unlocked_ioctl = stli_memioctl, + .llseek = default_llseek, +}; + +/*****************************************************************************/ + +/* + * Define a timer_list entry for our poll routine. The slave board + * is polled every so often to see if anything needs doing. This is + * much cheaper on host cpu than using interrupts. It turns out to + * not increase character latency by much either... + */ +static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); + +static int stli_timeron; + +/* + * Define the calculation for the timeout routine. + */ +#define STLI_TIMEOUT (jiffies + 1) + +/*****************************************************************************/ + +static struct class *istallion_class; + +static void stli_cleanup_ports(struct stlibrd *brdp) +{ + struct stliport *portp; + unsigned int j; + struct tty_struct *tty; + + for (j = 0; j < STL_MAXPORTS; j++) { + portp = brdp->ports[j]; + if (portp != NULL) { + tty = tty_port_tty_get(&portp->port); + if (tty != NULL) { + tty_hangup(tty); + tty_kref_put(tty); + } + kfree(portp); + } + } +} + +/*****************************************************************************/ + +/* + * Parse the supplied argument string, into the board conf struct. + */ + +static int stli_parsebrd(struct stlconf *confp, char **argp) +{ + unsigned int i; + char *sp; + + if (argp[0] == NULL || *argp[0] == 0) + return 0; + + for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) + *sp = tolower(*sp); + + for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { + if (strcmp(stli_brdstr[i].name, argp[0]) == 0) + break; + } + if (i == ARRAY_SIZE(stli_brdstr)) { + printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]); + return 0; + } + + confp->brdtype = stli_brdstr[i].type; + if (argp[1] != NULL && *argp[1] != 0) + confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0); + if (argp[2] != NULL && *argp[2] != 0) + confp->memaddr = simple_strtoul(argp[2], NULL, 0); + return(1); +} + +/*****************************************************************************/ + +/* + * On the first open of the device setup the port hardware, and + * initialize the per port data structure. Since initializing the port + * requires several commands to the board we will need to wait for any + * other open that is already initializing the port. + * + * Locking: protected by the port mutex. + */ + +static int stli_activate(struct tty_port *port, struct tty_struct *tty) +{ + struct stliport *portp = container_of(port, struct stliport, port); + struct stlibrd *brdp = stli_brds[portp->brdnr]; + int rc; + + if ((rc = stli_initopen(tty, brdp, portp)) >= 0) + clear_bit(TTY_IO_ERROR, &tty->flags); + wake_up_interruptible(&portp->raw_wait); + return rc; +} + +static int stli_open(struct tty_struct *tty, struct file *filp) +{ + struct stlibrd *brdp; + struct stliport *portp; + unsigned int minordev, brdnr, portnr; + + minordev = tty->index; + brdnr = MINOR2BRD(minordev); + if (brdnr >= stli_nrbrds) + return -ENODEV; + brdp = stli_brds[brdnr]; + if (brdp == NULL) + return -ENODEV; + if (!test_bit(BST_STARTED, &brdp->state)) + return -ENODEV; + portnr = MINOR2PORT(minordev); + if (portnr > brdp->nrports) + return -ENODEV; + + portp = brdp->ports[portnr]; + if (portp == NULL) + return -ENODEV; + if (portp->devnr < 1) + return -ENODEV; + + tty->driver_data = portp; + return tty_port_open(&portp->port, tty, filp); +} + + +/*****************************************************************************/ + +static void stli_shutdown(struct tty_port *port) +{ + struct stlibrd *brdp; + unsigned long ftype; + unsigned long flags; + struct stliport *portp = container_of(port, struct stliport, port); + + if (portp->brdnr >= stli_nrbrds) + return; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return; + + /* + * May want to wait for data to drain before closing. The BUSY + * flag keeps track of whether we are still transmitting or not. + * It is updated by messages from the slave - indicating when all + * chars really have drained. + */ + + if (!test_bit(ST_CLOSING, &portp->state)) + stli_rawclose(brdp, portp, 0, 0); + + spin_lock_irqsave(&stli_lock, flags); + clear_bit(ST_TXBUSY, &portp->state); + clear_bit(ST_RXSTOP, &portp->state); + spin_unlock_irqrestore(&stli_lock, flags); + + ftype = FLUSHTX | FLUSHRX; + stli_cmdwait(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); +} + +static void stli_close(struct tty_struct *tty, struct file *filp) +{ + struct stliport *portp = tty->driver_data; + unsigned long flags; + if (portp == NULL) + return; + spin_lock_irqsave(&stli_lock, flags); + /* Flush any internal buffering out first */ + if (tty == stli_txcooktty) + stli_flushchars(tty); + spin_unlock_irqrestore(&stli_lock, flags); + tty_port_close(&portp->port, tty, filp); +} + +/*****************************************************************************/ + +/* + * Carry out first open operations on a port. This involves a number of + * commands to be sent to the slave. We need to open the port, set the + * notification events, set the initial port settings, get and set the + * initial signal values. We sleep and wait in between each one. But + * this still all happens pretty quickly. + */ + +static int stli_initopen(struct tty_struct *tty, + struct stlibrd *brdp, struct stliport *portp) +{ + asynotify_t nt; + asyport_t aport; + int rc; + + if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) + return rc; + + memset(&nt, 0, sizeof(asynotify_t)); + nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); + nt.signal = SG_DCD; + if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, + sizeof(asynotify_t), 0)) < 0) + return rc; + + stli_mkasyport(tty, portp, &aport, tty->termios); + if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, + sizeof(asyport_t), 0)) < 0) + return rc; + + set_bit(ST_GETSIGS, &portp->state); + if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, + sizeof(asysigs_t), 1)) < 0) + return rc; + if (test_and_clear_bit(ST_GETSIGS, &portp->state)) + portp->sigs = stli_mktiocm(portp->asig.sigvalue); + stli_mkasysigs(&portp->asig, 1, 1); + if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, + sizeof(asysigs_t), 0)) < 0) + return rc; + + return 0; +} + +/*****************************************************************************/ + +/* + * Send an open message to the slave. This will sleep waiting for the + * acknowledgement, so must have user context. We need to co-ordinate + * with close events here, since we don't want open and close events + * to overlap. + */ + +static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) +{ + cdkhdr_t __iomem *hdrp; + cdkctrl_t __iomem *cp; + unsigned char __iomem *bits; + unsigned long flags; + int rc; + +/* + * Send a message to the slave to open this port. + */ + +/* + * Slave is already closing this port. This can happen if a hangup + * occurs on this port. So we must wait until it is complete. The + * order of opens and closes may not be preserved across shared + * memory, so we must wait until it is complete. + */ + wait_event_interruptible_tty(portp->raw_wait, + !test_bit(ST_CLOSING, &portp->state)); + if (signal_pending(current)) { + return -ERESTARTSYS; + } + +/* + * Everything is ready now, so write the open message into shared + * memory. Once the message is in set the service bits to say that + * this port wants service. + */ + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; + writel(arg, &cp->openarg); + writeb(1, &cp->open); + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + + portp->portidx; + writeb(readb(bits) | portp->portbit, bits); + EBRDDISABLE(brdp); + + if (wait == 0) { + spin_unlock_irqrestore(&brd_lock, flags); + return 0; + } + +/* + * Slave is in action, so now we must wait for the open acknowledgment + * to come back. + */ + rc = 0; + set_bit(ST_OPENING, &portp->state); + spin_unlock_irqrestore(&brd_lock, flags); + + wait_event_interruptible_tty(portp->raw_wait, + !test_bit(ST_OPENING, &portp->state)); + if (signal_pending(current)) + rc = -ERESTARTSYS; + + if ((rc == 0) && (portp->rc != 0)) + rc = -EIO; + return rc; +} + +/*****************************************************************************/ + +/* + * Send a close message to the slave. Normally this will sleep waiting + * for the acknowledgement, but if wait parameter is 0 it will not. If + * wait is true then must have user context (to sleep). + */ + +static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) +{ + cdkhdr_t __iomem *hdrp; + cdkctrl_t __iomem *cp; + unsigned char __iomem *bits; + unsigned long flags; + int rc; + +/* + * Slave is already closing this port. This can happen if a hangup + * occurs on this port. + */ + if (wait) { + wait_event_interruptible_tty(portp->raw_wait, + !test_bit(ST_CLOSING, &portp->state)); + if (signal_pending(current)) { + return -ERESTARTSYS; + } + } + +/* + * Write the close command into shared memory. + */ + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; + writel(arg, &cp->closearg); + writeb(1, &cp->close); + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + + portp->portidx; + writeb(readb(bits) |portp->portbit, bits); + EBRDDISABLE(brdp); + + set_bit(ST_CLOSING, &portp->state); + spin_unlock_irqrestore(&brd_lock, flags); + + if (wait == 0) + return 0; + +/* + * Slave is in action, so now we must wait for the open acknowledgment + * to come back. + */ + rc = 0; + wait_event_interruptible_tty(portp->raw_wait, + !test_bit(ST_CLOSING, &portp->state)); + if (signal_pending(current)) + rc = -ERESTARTSYS; + + if ((rc == 0) && (portp->rc != 0)) + rc = -EIO; + return rc; +} + +/*****************************************************************************/ + +/* + * Send a command to the slave and wait for the response. This must + * have user context (it sleeps). This routine is generic in that it + * can send any type of command. Its purpose is to wait for that command + * to complete (as opposed to initiating the command then returning). + */ + +static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) +{ + /* + * no need for wait_event_tty because clearing ST_CMDING cannot block + * on BTM + */ + wait_event_interruptible(portp->raw_wait, + !test_bit(ST_CMDING, &portp->state)); + if (signal_pending(current)) + return -ERESTARTSYS; + + stli_sendcmd(brdp, portp, cmd, arg, size, copyback); + + wait_event_interruptible(portp->raw_wait, + !test_bit(ST_CMDING, &portp->state)); + if (signal_pending(current)) + return -ERESTARTSYS; + + if (portp->rc != 0) + return -EIO; + return 0; +} + +/*****************************************************************************/ + +/* + * Send the termios settings for this port to the slave. This sleeps + * waiting for the command to complete - so must have user context. + */ + +static int stli_setport(struct tty_struct *tty) +{ + struct stliport *portp = tty->driver_data; + struct stlibrd *brdp; + asyport_t aport; + + if (portp == NULL) + return -ENODEV; + if (portp->brdnr >= stli_nrbrds) + return -ENODEV; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return -ENODEV; + + stli_mkasyport(tty, portp, &aport, tty->termios); + return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); +} + +/*****************************************************************************/ + +static int stli_carrier_raised(struct tty_port *port) +{ + struct stliport *portp = container_of(port, struct stliport, port); + return (portp->sigs & TIOCM_CD) ? 1 : 0; +} + +static void stli_dtr_rts(struct tty_port *port, int on) +{ + struct stliport *portp = container_of(port, struct stliport, port); + struct stlibrd *brdp = stli_brds[portp->brdnr]; + stli_mkasysigs(&portp->asig, on, on); + if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, + sizeof(asysigs_t), 0) < 0) + printk(KERN_WARNING "istallion: dtr set failed.\n"); +} + + +/*****************************************************************************/ + +/* + * Write routine. Take the data and put it in the shared memory ring + * queue. If port is not already sending chars then need to mark the + * service bits for this port. + */ + +static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + cdkasy_t __iomem *ap; + cdkhdr_t __iomem *hdrp; + unsigned char __iomem *bits; + unsigned char __iomem *shbuf; + unsigned char *chbuf; + struct stliport *portp; + struct stlibrd *brdp; + unsigned int len, stlen, head, tail, size; + unsigned long flags; + + if (tty == stli_txcooktty) + stli_flushchars(tty); + portp = tty->driver_data; + if (portp == NULL) + return 0; + if (portp->brdnr >= stli_nrbrds) + return 0; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return 0; + chbuf = (unsigned char *) buf; + +/* + * All data is now local, shove as much as possible into shared memory. + */ + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); + head = (unsigned int) readw(&ap->txq.head); + tail = (unsigned int) readw(&ap->txq.tail); + if (tail != ((unsigned int) readw(&ap->txq.tail))) + tail = (unsigned int) readw(&ap->txq.tail); + size = portp->txsize; + if (head >= tail) { + len = size - (head - tail) - 1; + stlen = size - head; + } else { + len = tail - head - 1; + stlen = len; + } + + len = min(len, (unsigned int)count); + count = 0; + shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); + + while (len > 0) { + stlen = min(len, stlen); + memcpy_toio(shbuf + head, chbuf, stlen); + chbuf += stlen; + len -= stlen; + count += stlen; + head += stlen; + if (head >= size) { + head = 0; + stlen = tail; + } + } + + ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); + writew(head, &ap->txq.head); + if (test_bit(ST_TXBUSY, &portp->state)) { + if (readl(&ap->changed.data) & DT_TXEMPTY) + writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); + } + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + + portp->portidx; + writeb(readb(bits) | portp->portbit, bits); + set_bit(ST_TXBUSY, &portp->state); + EBRDDISABLE(brdp); + spin_unlock_irqrestore(&brd_lock, flags); + + return(count); +} + +/*****************************************************************************/ + +/* + * Output a single character. We put it into a temporary local buffer + * (for speed) then write out that buffer when the flushchars routine + * is called. There is a safety catch here so that if some other port + * writes chars before the current buffer has been, then we write them + * first them do the new ports. + */ + +static int stli_putchar(struct tty_struct *tty, unsigned char ch) +{ + if (tty != stli_txcooktty) { + if (stli_txcooktty != NULL) + stli_flushchars(stli_txcooktty); + stli_txcooktty = tty; + } + + stli_txcookbuf[stli_txcooksize++] = ch; + return 0; +} + +/*****************************************************************************/ + +/* + * Transfer characters from the local TX cooking buffer to the board. + * We sort of ignore the tty that gets passed in here. We rely on the + * info stored with the TX cook buffer to tell us which port to flush + * the data on. In any case we clean out the TX cook buffer, for re-use + * by someone else. + */ + +static void stli_flushchars(struct tty_struct *tty) +{ + cdkhdr_t __iomem *hdrp; + unsigned char __iomem *bits; + cdkasy_t __iomem *ap; + struct tty_struct *cooktty; + struct stliport *portp; + struct stlibrd *brdp; + unsigned int len, stlen, head, tail, size, count, cooksize; + unsigned char *buf; + unsigned char __iomem *shbuf; + unsigned long flags; + + cooksize = stli_txcooksize; + cooktty = stli_txcooktty; + stli_txcooksize = 0; + stli_txcookrealsize = 0; + stli_txcooktty = NULL; + + if (cooktty == NULL) + return; + if (tty != cooktty) + tty = cooktty; + if (cooksize == 0) + return; + + portp = tty->driver_data; + if (portp == NULL) + return; + if (portp->brdnr >= stli_nrbrds) + return; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + + ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); + head = (unsigned int) readw(&ap->txq.head); + tail = (unsigned int) readw(&ap->txq.tail); + if (tail != ((unsigned int) readw(&ap->txq.tail))) + tail = (unsigned int) readw(&ap->txq.tail); + size = portp->txsize; + if (head >= tail) { + len = size - (head - tail) - 1; + stlen = size - head; + } else { + len = tail - head - 1; + stlen = len; + } + + len = min(len, cooksize); + count = 0; + shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); + buf = stli_txcookbuf; + + while (len > 0) { + stlen = min(len, stlen); + memcpy_toio(shbuf + head, buf, stlen); + buf += stlen; + len -= stlen; + count += stlen; + head += stlen; + if (head >= size) { + head = 0; + stlen = tail; + } + } + + ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); + writew(head, &ap->txq.head); + + if (test_bit(ST_TXBUSY, &portp->state)) { + if (readl(&ap->changed.data) & DT_TXEMPTY) + writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); + } + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + + portp->portidx; + writeb(readb(bits) | portp->portbit, bits); + set_bit(ST_TXBUSY, &portp->state); + + EBRDDISABLE(brdp); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +static int stli_writeroom(struct tty_struct *tty) +{ + cdkasyrq_t __iomem *rp; + struct stliport *portp; + struct stlibrd *brdp; + unsigned int head, tail, len; + unsigned long flags; + + if (tty == stli_txcooktty) { + if (stli_txcookrealsize != 0) { + len = stli_txcookrealsize - stli_txcooksize; + return len; + } + } + + portp = tty->driver_data; + if (portp == NULL) + return 0; + if (portp->brdnr >= stli_nrbrds) + return 0; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return 0; + + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; + head = (unsigned int) readw(&rp->head); + tail = (unsigned int) readw(&rp->tail); + if (tail != ((unsigned int) readw(&rp->tail))) + tail = (unsigned int) readw(&rp->tail); + len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); + len--; + EBRDDISABLE(brdp); + spin_unlock_irqrestore(&brd_lock, flags); + + if (tty == stli_txcooktty) { + stli_txcookrealsize = len; + len -= stli_txcooksize; + } + return len; +} + +/*****************************************************************************/ + +/* + * Return the number of characters in the transmit buffer. Normally we + * will return the number of chars in the shared memory ring queue. + * We need to kludge around the case where the shared memory buffer is + * empty but not all characters have drained yet, for this case just + * return that there is 1 character in the buffer! + */ + +static int stli_charsinbuffer(struct tty_struct *tty) +{ + cdkasyrq_t __iomem *rp; + struct stliport *portp; + struct stlibrd *brdp; + unsigned int head, tail, len; + unsigned long flags; + + if (tty == stli_txcooktty) + stli_flushchars(tty); + portp = tty->driver_data; + if (portp == NULL) + return 0; + if (portp->brdnr >= stli_nrbrds) + return 0; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return 0; + + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; + head = (unsigned int) readw(&rp->head); + tail = (unsigned int) readw(&rp->tail); + if (tail != ((unsigned int) readw(&rp->tail))) + tail = (unsigned int) readw(&rp->tail); + len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); + if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) + len = 1; + EBRDDISABLE(brdp); + spin_unlock_irqrestore(&brd_lock, flags); + + return len; +} + +/*****************************************************************************/ + +/* + * Generate the serial struct info. + */ + +static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) +{ + struct serial_struct sio; + struct stlibrd *brdp; + + memset(&sio, 0, sizeof(struct serial_struct)); + sio.type = PORT_UNKNOWN; + sio.line = portp->portnr; + sio.irq = 0; + sio.flags = portp->port.flags; + sio.baud_base = portp->baud_base; + sio.close_delay = portp->port.close_delay; + sio.closing_wait = portp->closing_wait; + sio.custom_divisor = portp->custom_divisor; + sio.xmit_fifo_size = 0; + sio.hub6 = 0; + + brdp = stli_brds[portp->brdnr]; + if (brdp != NULL) + sio.port = brdp->iobase; + + return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? + -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * Set port according to the serial struct info. + * At this point we do not do any auto-configure stuff, so we will + * just quietly ignore any requests to change irq, etc. + */ + +static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp) +{ + struct serial_struct sio; + int rc; + struct stliport *portp = tty->driver_data; + + if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) + return -EFAULT; + if (!capable(CAP_SYS_ADMIN)) { + if ((sio.baud_base != portp->baud_base) || + (sio.close_delay != portp->port.close_delay) || + ((sio.flags & ~ASYNC_USR_MASK) != + (portp->port.flags & ~ASYNC_USR_MASK))) + return -EPERM; + } + + portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | + (sio.flags & ASYNC_USR_MASK); + portp->baud_base = sio.baud_base; + portp->port.close_delay = sio.close_delay; + portp->closing_wait = sio.closing_wait; + portp->custom_divisor = sio.custom_divisor; + + if ((rc = stli_setport(tty)) < 0) + return rc; + return 0; +} + +/*****************************************************************************/ + +static int stli_tiocmget(struct tty_struct *tty) +{ + struct stliport *portp = tty->driver_data; + struct stlibrd *brdp; + int rc; + + if (portp == NULL) + return -ENODEV; + if (portp->brdnr >= stli_nrbrds) + return 0; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return 0; + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + + if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, + &portp->asig, sizeof(asysigs_t), 1)) < 0) + return rc; + + return stli_mktiocm(portp->asig.sigvalue); +} + +static int stli_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct stliport *portp = tty->driver_data; + struct stlibrd *brdp; + int rts = -1, dtr = -1; + + if (portp == NULL) + return -ENODEV; + if (portp->brdnr >= stli_nrbrds) + return 0; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return 0; + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + + if (set & TIOCM_RTS) + rts = 1; + if (set & TIOCM_DTR) + dtr = 1; + if (clear & TIOCM_RTS) + rts = 0; + if (clear & TIOCM_DTR) + dtr = 0; + + stli_mkasysigs(&portp->asig, dtr, rts); + + return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, + sizeof(asysigs_t), 0); +} + +static int stli_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) +{ + struct stliport *portp; + struct stlibrd *brdp; + int rc; + void __user *argp = (void __user *)arg; + + portp = tty->driver_data; + if (portp == NULL) + return -ENODEV; + if (portp->brdnr >= stli_nrbrds) + return 0; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return 0; + + if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && + (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + } + + rc = 0; + + switch (cmd) { + case TIOCGSERIAL: + rc = stli_getserial(portp, argp); + break; + case TIOCSSERIAL: + rc = stli_setserial(tty, argp); + break; + case STL_GETPFLAG: + rc = put_user(portp->pflag, (unsigned __user *)argp); + break; + case STL_SETPFLAG: + if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) + stli_setport(tty); + break; + case COM_GETPORTSTATS: + rc = stli_getportstats(tty, portp, argp); + break; + case COM_CLRPORTSTATS: + rc = stli_clrportstats(portp, argp); + break; + case TIOCSERCONFIG: + case TIOCSERGWILD: + case TIOCSERSWILD: + case TIOCSERGETLSR: + case TIOCSERGSTRUCT: + case TIOCSERGETMULTI: + case TIOCSERSETMULTI: + default: + rc = -ENOIOCTLCMD; + break; + } + + return rc; +} + +/*****************************************************************************/ + +/* + * This routine assumes that we have user context and can sleep. + * Looks like it is true for the current ttys implementation..!! + */ + +static void stli_settermios(struct tty_struct *tty, struct ktermios *old) +{ + struct stliport *portp; + struct stlibrd *brdp; + struct ktermios *tiosp; + asyport_t aport; + + portp = tty->driver_data; + if (portp == NULL) + return; + if (portp->brdnr >= stli_nrbrds) + return; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return; + + tiosp = tty->termios; + + stli_mkasyport(tty, portp, &aport, tiosp); + stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); + stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); + stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, + sizeof(asysigs_t), 0); + if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) + tty->hw_stopped = 0; + if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) + wake_up_interruptible(&portp->port.open_wait); +} + +/*****************************************************************************/ + +/* + * Attempt to flow control who ever is sending us data. We won't really + * do any flow control action here. We can't directly, and even if we + * wanted to we would have to send a command to the slave. The slave + * knows how to flow control, and will do so when its buffers reach its + * internal high water marks. So what we will do is set a local state + * bit that will stop us sending any RX data up from the poll routine + * (which is the place where RX data from the slave is handled). + */ + +static void stli_throttle(struct tty_struct *tty) +{ + struct stliport *portp = tty->driver_data; + if (portp == NULL) + return; + set_bit(ST_RXSTOP, &portp->state); +} + +/*****************************************************************************/ + +/* + * Unflow control the device sending us data... That means that all + * we have to do is clear the RXSTOP state bit. The next poll call + * will then be able to pass the RX data back up. + */ + +static void stli_unthrottle(struct tty_struct *tty) +{ + struct stliport *portp = tty->driver_data; + if (portp == NULL) + return; + clear_bit(ST_RXSTOP, &portp->state); +} + +/*****************************************************************************/ + +/* + * Stop the transmitter. + */ + +static void stli_stop(struct tty_struct *tty) +{ +} + +/*****************************************************************************/ + +/* + * Start the transmitter again. + */ + +static void stli_start(struct tty_struct *tty) +{ +} + +/*****************************************************************************/ + + +/* + * Hangup this port. This is pretty much like closing the port, only + * a little more brutal. No waiting for data to drain. Shutdown the + * port and maybe drop signals. This is rather tricky really. We want + * to close the port as well. + */ + +static void stli_hangup(struct tty_struct *tty) +{ + struct stliport *portp = tty->driver_data; + tty_port_hangup(&portp->port); +} + +/*****************************************************************************/ + +/* + * Flush characters from the lower buffer. We may not have user context + * so we cannot sleep waiting for it to complete. Also we need to check + * if there is chars for this port in the TX cook buffer, and flush them + * as well. + */ + +static void stli_flushbuffer(struct tty_struct *tty) +{ + struct stliport *portp; + struct stlibrd *brdp; + unsigned long ftype, flags; + + portp = tty->driver_data; + if (portp == NULL) + return; + if (portp->brdnr >= stli_nrbrds) + return; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + if (tty == stli_txcooktty) { + stli_txcooktty = NULL; + stli_txcooksize = 0; + stli_txcookrealsize = 0; + } + if (test_bit(ST_CMDING, &portp->state)) { + set_bit(ST_DOFLUSHTX, &portp->state); + } else { + ftype = FLUSHTX; + if (test_bit(ST_DOFLUSHRX, &portp->state)) { + ftype |= FLUSHRX; + clear_bit(ST_DOFLUSHRX, &portp->state); + } + __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); + } + spin_unlock_irqrestore(&brd_lock, flags); + tty_wakeup(tty); +} + +/*****************************************************************************/ + +static int stli_breakctl(struct tty_struct *tty, int state) +{ + struct stlibrd *brdp; + struct stliport *portp; + long arg; + + portp = tty->driver_data; + if (portp == NULL) + return -EINVAL; + if (portp->brdnr >= stli_nrbrds) + return -EINVAL; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return -EINVAL; + + arg = (state == -1) ? BREAKON : BREAKOFF; + stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); + return 0; +} + +/*****************************************************************************/ + +static void stli_waituntilsent(struct tty_struct *tty, int timeout) +{ + struct stliport *portp; + unsigned long tend; + + portp = tty->driver_data; + if (portp == NULL) + return; + + if (timeout == 0) + timeout = HZ; + tend = jiffies + timeout; + + while (test_bit(ST_TXBUSY, &portp->state)) { + if (signal_pending(current)) + break; + msleep_interruptible(20); + if (time_after_eq(jiffies, tend)) + break; + } +} + +/*****************************************************************************/ + +static void stli_sendxchar(struct tty_struct *tty, char ch) +{ + struct stlibrd *brdp; + struct stliport *portp; + asyctrl_t actrl; + + portp = tty->driver_data; + if (portp == NULL) + return; + if (portp->brdnr >= stli_nrbrds) + return; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return; + + memset(&actrl, 0, sizeof(asyctrl_t)); + if (ch == STOP_CHAR(tty)) { + actrl.rxctrl = CT_STOPFLOW; + } else if (ch == START_CHAR(tty)) { + actrl.rxctrl = CT_STARTFLOW; + } else { + actrl.txctrl = CT_SENDCHR; + actrl.tximdch = ch; + } + stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); +} + +static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr) +{ + char *uart; + int rc; + + rc = stli_portcmdstats(NULL, portp); + + uart = "UNKNOWN"; + if (test_bit(BST_STARTED, &brdp->state)) { + switch (stli_comstats.hwid) { + case 0: uart = "2681"; break; + case 1: uart = "SC26198"; break; + default:uart = "CD1400"; break; + } + } + seq_printf(m, "%d: uart:%s ", portnr, uart); + + if (test_bit(BST_STARTED, &brdp->state) && rc >= 0) { + char sep; + + seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal, + (int) stli_comstats.rxtotal); + + if (stli_comstats.rxframing) + seq_printf(m, " fe:%d", + (int) stli_comstats.rxframing); + if (stli_comstats.rxparity) + seq_printf(m, " pe:%d", + (int) stli_comstats.rxparity); + if (stli_comstats.rxbreaks) + seq_printf(m, " brk:%d", + (int) stli_comstats.rxbreaks); + if (stli_comstats.rxoverrun) + seq_printf(m, " oe:%d", + (int) stli_comstats.rxoverrun); + + sep = ' '; + if (stli_comstats.signals & TIOCM_RTS) { + seq_printf(m, "%c%s", sep, "RTS"); + sep = '|'; + } + if (stli_comstats.signals & TIOCM_CTS) { + seq_printf(m, "%c%s", sep, "CTS"); + sep = '|'; + } + if (stli_comstats.signals & TIOCM_DTR) { + seq_printf(m, "%c%s", sep, "DTR"); + sep = '|'; + } + if (stli_comstats.signals & TIOCM_CD) { + seq_printf(m, "%c%s", sep, "DCD"); + sep = '|'; + } + if (stli_comstats.signals & TIOCM_DSR) { + seq_printf(m, "%c%s", sep, "DSR"); + sep = '|'; + } + } + seq_putc(m, '\n'); +} + +/*****************************************************************************/ + +/* + * Port info, read from the /proc file system. + */ + +static int stli_proc_show(struct seq_file *m, void *v) +{ + struct stlibrd *brdp; + struct stliport *portp; + unsigned int brdnr, portnr, totalport; + + totalport = 0; + + seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion); + +/* + * We scan through for each board, panel and port. The offset is + * calculated on the fly, and irrelevant ports are skipped. + */ + for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { + brdp = stli_brds[brdnr]; + if (brdp == NULL) + continue; + if (brdp->state == 0) + continue; + + totalport = brdnr * STL_MAXPORTS; + for (portnr = 0; (portnr < brdp->nrports); portnr++, + totalport++) { + portp = brdp->ports[portnr]; + if (portp == NULL) + continue; + stli_portinfo(m, brdp, portp, totalport); + } + } + return 0; +} + +static int stli_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, stli_proc_show, NULL); +} + +static const struct file_operations stli_proc_fops = { + .owner = THIS_MODULE, + .open = stli_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/*****************************************************************************/ + +/* + * Generic send command routine. This will send a message to the slave, + * of the specified type with the specified argument. Must be very + * careful of data that will be copied out from shared memory - + * containing command results. The command completion is all done from + * a poll routine that does not have user context. Therefore you cannot + * copy back directly into user space, or to the kernel stack of a + * process. This routine does not sleep, so can be called from anywhere. + * + * The caller must hold the brd_lock (see also stli_sendcmd the usual + * entry point) + */ + +static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) +{ + cdkhdr_t __iomem *hdrp; + cdkctrl_t __iomem *cp; + unsigned char __iomem *bits; + + if (test_bit(ST_CMDING, &portp->state)) { + printk(KERN_ERR "istallion: command already busy, cmd=%x!\n", + (int) cmd); + return; + } + + EBRDENABLE(brdp); + cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; + if (size > 0) { + memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); + if (copyback) { + portp->argp = arg; + portp->argsize = size; + } + } + writel(0, &cp->status); + writel(cmd, &cp->cmd); + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + + portp->portidx; + writeb(readb(bits) | portp->portbit, bits); + set_bit(ST_CMDING, &portp->state); + EBRDDISABLE(brdp); +} + +static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) +{ + unsigned long flags; + + spin_lock_irqsave(&brd_lock, flags); + __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Read data from shared memory. This assumes that the shared memory + * is enabled and that interrupts are off. Basically we just empty out + * the shared memory buffer into the tty buffer. Must be careful to + * handle the case where we fill up the tty buffer, but still have + * more chars to unload. + */ + +static void stli_read(struct stlibrd *brdp, struct stliport *portp) +{ + cdkasyrq_t __iomem *rp; + char __iomem *shbuf; + struct tty_struct *tty; + unsigned int head, tail, size; + unsigned int len, stlen; + + if (test_bit(ST_RXSTOP, &portp->state)) + return; + tty = tty_port_tty_get(&portp->port); + if (tty == NULL) + return; + + rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; + head = (unsigned int) readw(&rp->head); + if (head != ((unsigned int) readw(&rp->head))) + head = (unsigned int) readw(&rp->head); + tail = (unsigned int) readw(&rp->tail); + size = portp->rxsize; + if (head >= tail) { + len = head - tail; + stlen = len; + } else { + len = size - (tail - head); + stlen = size - tail; + } + + len = tty_buffer_request_room(tty, len); + + shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); + + while (len > 0) { + unsigned char *cptr; + + stlen = min(len, stlen); + tty_prepare_flip_string(tty, &cptr, stlen); + memcpy_fromio(cptr, shbuf + tail, stlen); + len -= stlen; + tail += stlen; + if (tail >= size) { + tail = 0; + stlen = head; + } + } + rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; + writew(tail, &rp->tail); + + if (head != tail) + set_bit(ST_RXING, &portp->state); + + tty_schedule_flip(tty); + tty_kref_put(tty); +} + +/*****************************************************************************/ + +/* + * Set up and carry out any delayed commands. There is only a small set + * of slave commands that can be done "off-level". So it is not too + * difficult to deal with them here. + */ + +static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) +{ + int cmd; + + if (test_bit(ST_DOSIGS, &portp->state)) { + if (test_bit(ST_DOFLUSHTX, &portp->state) && + test_bit(ST_DOFLUSHRX, &portp->state)) + cmd = A_SETSIGNALSF; + else if (test_bit(ST_DOFLUSHTX, &portp->state)) + cmd = A_SETSIGNALSFTX; + else if (test_bit(ST_DOFLUSHRX, &portp->state)) + cmd = A_SETSIGNALSFRX; + else + cmd = A_SETSIGNALS; + clear_bit(ST_DOFLUSHTX, &portp->state); + clear_bit(ST_DOFLUSHRX, &portp->state); + clear_bit(ST_DOSIGS, &portp->state); + memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, + sizeof(asysigs_t)); + writel(0, &cp->status); + writel(cmd, &cp->cmd); + set_bit(ST_CMDING, &portp->state); + } else if (test_bit(ST_DOFLUSHTX, &portp->state) || + test_bit(ST_DOFLUSHRX, &portp->state)) { + cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); + cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); + clear_bit(ST_DOFLUSHTX, &portp->state); + clear_bit(ST_DOFLUSHRX, &portp->state); + memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); + writel(0, &cp->status); + writel(A_FLUSH, &cp->cmd); + set_bit(ST_CMDING, &portp->state); + } +} + +/*****************************************************************************/ + +/* + * Host command service checking. This handles commands or messages + * coming from the slave to the host. Must have board shared memory + * enabled and interrupts off when called. Notice that by servicing the + * read data last we don't need to change the shared memory pointer + * during processing (which is a slow IO operation). + * Return value indicates if this port is still awaiting actions from + * the slave (like open, command, or even TX data being sent). If 0 + * then port is still busy, otherwise no longer busy. + */ + +static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) +{ + cdkasy_t __iomem *ap; + cdkctrl_t __iomem *cp; + struct tty_struct *tty; + asynotify_t nt; + unsigned long oldsigs; + int rc, donerx; + + ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); + cp = &ap->ctrl; + +/* + * Check if we are waiting for an open completion message. + */ + if (test_bit(ST_OPENING, &portp->state)) { + rc = readl(&cp->openarg); + if (readb(&cp->open) == 0 && rc != 0) { + if (rc > 0) + rc--; + writel(0, &cp->openarg); + portp->rc = rc; + clear_bit(ST_OPENING, &portp->state); + wake_up_interruptible(&portp->raw_wait); + } + } + +/* + * Check if we are waiting for a close completion message. + */ + if (test_bit(ST_CLOSING, &portp->state)) { + rc = (int) readl(&cp->closearg); + if (readb(&cp->close) == 0 && rc != 0) { + if (rc > 0) + rc--; + writel(0, &cp->closearg); + portp->rc = rc; + clear_bit(ST_CLOSING, &portp->state); + wake_up_interruptible(&portp->raw_wait); + } + } + +/* + * Check if we are waiting for a command completion message. We may + * need to copy out the command results associated with this command. + */ + if (test_bit(ST_CMDING, &portp->state)) { + rc = readl(&cp->status); + if (readl(&cp->cmd) == 0 && rc != 0) { + if (rc > 0) + rc--; + if (portp->argp != NULL) { + memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), + portp->argsize); + portp->argp = NULL; + } + writel(0, &cp->status); + portp->rc = rc; + clear_bit(ST_CMDING, &portp->state); + stli_dodelaycmd(portp, cp); + wake_up_interruptible(&portp->raw_wait); + } + } + +/* + * Check for any notification messages ready. This includes lots of + * different types of events - RX chars ready, RX break received, + * TX data low or empty in the slave, modem signals changed state. + */ + donerx = 0; + + if (ap->notify) { + nt = ap->changed; + ap->notify = 0; + tty = tty_port_tty_get(&portp->port); + + if (nt.signal & SG_DCD) { + oldsigs = portp->sigs; + portp->sigs = stli_mktiocm(nt.sigvalue); + clear_bit(ST_GETSIGS, &portp->state); + if ((portp->sigs & TIOCM_CD) && + ((oldsigs & TIOCM_CD) == 0)) + wake_up_interruptible(&portp->port.open_wait); + if ((oldsigs & TIOCM_CD) && + ((portp->sigs & TIOCM_CD) == 0)) { + if (portp->port.flags & ASYNC_CHECK_CD) { + if (tty) + tty_hangup(tty); + } + } + } + + if (nt.data & DT_TXEMPTY) + clear_bit(ST_TXBUSY, &portp->state); + if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { + if (tty != NULL) { + tty_wakeup(tty); + EBRDENABLE(brdp); + } + } + + if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { + if (tty != NULL) { + tty_insert_flip_char(tty, 0, TTY_BREAK); + if (portp->port.flags & ASYNC_SAK) { + do_SAK(tty); + EBRDENABLE(brdp); + } + tty_schedule_flip(tty); + } + } + tty_kref_put(tty); + + if (nt.data & DT_RXBUSY) { + donerx++; + stli_read(brdp, portp); + } + } + +/* + * It might seem odd that we are checking for more RX chars here. + * But, we need to handle the case where the tty buffer was previously + * filled, but we had more characters to pass up. The slave will not + * send any more RX notify messages until the RX buffer has been emptied. + * But it will leave the service bits on (since the buffer is not empty). + * So from here we can try to process more RX chars. + */ + if ((!donerx) && test_bit(ST_RXING, &portp->state)) { + clear_bit(ST_RXING, &portp->state); + stli_read(brdp, portp); + } + + return((test_bit(ST_OPENING, &portp->state) || + test_bit(ST_CLOSING, &portp->state) || + test_bit(ST_CMDING, &portp->state) || + test_bit(ST_TXBUSY, &portp->state) || + test_bit(ST_RXING, &portp->state)) ? 0 : 1); +} + +/*****************************************************************************/ + +/* + * Service all ports on a particular board. Assumes that the boards + * shared memory is enabled, and that the page pointer is pointed + * at the cdk header structure. + */ + +static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) +{ + struct stliport *portp; + unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; + unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; + unsigned char __iomem *slavep; + int bitpos, bitat, bitsize; + int channr, nrdevs, slavebitchange; + + bitsize = brdp->bitsize; + nrdevs = brdp->nrdevs; + +/* + * Check if slave wants any service. Basically we try to do as + * little work as possible here. There are 2 levels of service + * bits. So if there is nothing to do we bail early. We check + * 8 service bits at a time in the inner loop, so we can bypass + * the lot if none of them want service. + */ + memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), + bitsize); + + memset(&slavebits[0], 0, bitsize); + slavebitchange = 0; + + for (bitpos = 0; (bitpos < bitsize); bitpos++) { + if (hostbits[bitpos] == 0) + continue; + channr = bitpos * 8; + for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { + if (hostbits[bitpos] & bitat) { + portp = brdp->ports[(channr - 1)]; + if (stli_hostcmd(brdp, portp)) { + slavebitchange++; + slavebits[bitpos] |= bitat; + } + } + } + } + +/* + * If any of the ports are no longer busy then update them in the + * slave request bits. We need to do this after, since a host port + * service may initiate more slave requests. + */ + if (slavebitchange) { + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; + for (bitpos = 0; (bitpos < bitsize); bitpos++) { + if (readb(slavebits + bitpos)) + writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); + } + } +} + +/*****************************************************************************/ + +/* + * Driver poll routine. This routine polls the boards in use and passes + * messages back up to host when necessary. This is actually very + * CPU efficient, since we will always have the kernel poll clock, it + * adds only a few cycles when idle (since board service can be + * determined very easily), but when loaded generates no interrupts + * (with their expensive associated context change). + */ + +static void stli_poll(unsigned long arg) +{ + cdkhdr_t __iomem *hdrp; + struct stlibrd *brdp; + unsigned int brdnr; + + mod_timer(&stli_timerlist, STLI_TIMEOUT); + +/* + * Check each board and do any servicing required. + */ + for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { + brdp = stli_brds[brdnr]; + if (brdp == NULL) + continue; + if (!test_bit(BST_STARTED, &brdp->state)) + continue; + + spin_lock(&brd_lock); + EBRDENABLE(brdp); + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + if (readb(&hdrp->hostreq)) + stli_brdpoll(brdp, hdrp); + EBRDDISABLE(brdp); + spin_unlock(&brd_lock); + } +} + +/*****************************************************************************/ + +/* + * Translate the termios settings into the port setting structure of + * the slave. + */ + +static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, + asyport_t *pp, struct ktermios *tiosp) +{ + memset(pp, 0, sizeof(asyport_t)); + +/* + * Start of by setting the baud, char size, parity and stop bit info. + */ + pp->baudout = tty_get_baud_rate(tty); + if ((tiosp->c_cflag & CBAUD) == B38400) { + if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + pp->baudout = 57600; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + pp->baudout = 115200; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + pp->baudout = 230400; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + pp->baudout = 460800; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) + pp->baudout = (portp->baud_base / portp->custom_divisor); + } + if (pp->baudout > STL_MAXBAUD) + pp->baudout = STL_MAXBAUD; + pp->baudin = pp->baudout; + + switch (tiosp->c_cflag & CSIZE) { + case CS5: + pp->csize = 5; + break; + case CS6: + pp->csize = 6; + break; + case CS7: + pp->csize = 7; + break; + default: + pp->csize = 8; + break; + } + + if (tiosp->c_cflag & CSTOPB) + pp->stopbs = PT_STOP2; + else + pp->stopbs = PT_STOP1; + + if (tiosp->c_cflag & PARENB) { + if (tiosp->c_cflag & PARODD) + pp->parity = PT_ODDPARITY; + else + pp->parity = PT_EVENPARITY; + } else { + pp->parity = PT_NOPARITY; + } + +/* + * Set up any flow control options enabled. + */ + if (tiosp->c_iflag & IXON) { + pp->flow |= F_IXON; + if (tiosp->c_iflag & IXANY) + pp->flow |= F_IXANY; + } + if (tiosp->c_cflag & CRTSCTS) + pp->flow |= (F_RTSFLOW | F_CTSFLOW); + + pp->startin = tiosp->c_cc[VSTART]; + pp->stopin = tiosp->c_cc[VSTOP]; + pp->startout = tiosp->c_cc[VSTART]; + pp->stopout = tiosp->c_cc[VSTOP]; + +/* + * Set up the RX char marking mask with those RX error types we must + * catch. We can get the slave to help us out a little here, it will + * ignore parity errors and breaks for us, and mark parity errors in + * the data stream. + */ + if (tiosp->c_iflag & IGNPAR) + pp->iflag |= FI_IGNRXERRS; + if (tiosp->c_iflag & IGNBRK) + pp->iflag |= FI_IGNBREAK; + + portp->rxmarkmsk = 0; + if (tiosp->c_iflag & (INPCK | PARMRK)) + pp->iflag |= FI_1MARKRXERRS; + if (tiosp->c_iflag & BRKINT) + portp->rxmarkmsk |= BRKINT; + +/* + * Set up clocal processing as required. + */ + if (tiosp->c_cflag & CLOCAL) + portp->port.flags &= ~ASYNC_CHECK_CD; + else + portp->port.flags |= ASYNC_CHECK_CD; + +/* + * Transfer any persistent flags into the asyport structure. + */ + pp->pflag = (portp->pflag & 0xffff); + pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; + pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; + pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; +} + +/*****************************************************************************/ + +/* + * Construct a slave signals structure for setting the DTR and RTS + * signals as specified. + */ + +static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) +{ + memset(sp, 0, sizeof(asysigs_t)); + if (dtr >= 0) { + sp->signal |= SG_DTR; + sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); + } + if (rts >= 0) { + sp->signal |= SG_RTS; + sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); + } +} + +/*****************************************************************************/ + +/* + * Convert the signals returned from the slave into a local TIOCM type + * signals value. We keep them locally in TIOCM format. + */ + +static long stli_mktiocm(unsigned long sigvalue) +{ + long tiocm = 0; + tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); + tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); + tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); + tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); + tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); + tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); + return(tiocm); +} + +/*****************************************************************************/ + +/* + * All panels and ports actually attached have been worked out. All + * we need to do here is set up the appropriate per port data structures. + */ + +static int stli_initports(struct stlibrd *brdp) +{ + struct stliport *portp; + unsigned int i, panelnr, panelport; + + for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { + portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); + if (!portp) { + printk(KERN_WARNING "istallion: failed to allocate port structure\n"); + continue; + } + tty_port_init(&portp->port); + portp->port.ops = &stli_port_ops; + portp->magic = STLI_PORTMAGIC; + portp->portnr = i; + portp->brdnr = brdp->brdnr; + portp->panelnr = panelnr; + portp->baud_base = STL_BAUDBASE; + portp->port.close_delay = STL_CLOSEDELAY; + portp->closing_wait = 30 * HZ; + init_waitqueue_head(&portp->port.open_wait); + init_waitqueue_head(&portp->port.close_wait); + init_waitqueue_head(&portp->raw_wait); + panelport++; + if (panelport >= brdp->panels[panelnr]) { + panelport = 0; + panelnr++; + } + brdp->ports[i] = portp; + } + + return 0; +} + +/*****************************************************************************/ + +/* + * All the following routines are board specific hardware operations. + */ + +static void stli_ecpinit(struct stlibrd *brdp) +{ + unsigned long memconf; + + outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); + udelay(10); + outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); + udelay(100); + + memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; + outb(memconf, (brdp->iobase + ECP_ATMEMAR)); +} + +/*****************************************************************************/ + +static void stli_ecpenable(struct stlibrd *brdp) +{ + outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); +} + +/*****************************************************************************/ + +static void stli_ecpdisable(struct stlibrd *brdp) +{ + outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); +} + +/*****************************************************************************/ + +static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + void __iomem *ptr; + unsigned char val; + + if (offset > brdp->memsize) { + printk(KERN_ERR "istallion: shared memory pointer=%x out of " + "range at line=%d(%d), brd=%d\n", + (int) offset, line, __LINE__, brdp->brdnr); + ptr = NULL; + val = 0; + } else { + ptr = brdp->membase + (offset % ECP_ATPAGESIZE); + val = (unsigned char) (offset / ECP_ATPAGESIZE); + } + outb(val, (brdp->iobase + ECP_ATMEMPR)); + return(ptr); +} + +/*****************************************************************************/ + +static void stli_ecpreset(struct stlibrd *brdp) +{ + outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); + udelay(10); + outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); + udelay(500); +} + +/*****************************************************************************/ + +static void stli_ecpintr(struct stlibrd *brdp) +{ + outb(0x1, brdp->iobase); +} + +/*****************************************************************************/ + +/* + * The following set of functions act on ECP EISA boards. + */ + +static void stli_ecpeiinit(struct stlibrd *brdp) +{ + unsigned long memconf; + + outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); + outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); + udelay(10); + outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); + udelay(500); + + memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; + outb(memconf, (brdp->iobase + ECP_EIMEMARL)); + memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; + outb(memconf, (brdp->iobase + ECP_EIMEMARH)); +} + +/*****************************************************************************/ + +static void stli_ecpeienable(struct stlibrd *brdp) +{ + outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); +} + +/*****************************************************************************/ + +static void stli_ecpeidisable(struct stlibrd *brdp) +{ + outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); +} + +/*****************************************************************************/ + +static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + void __iomem *ptr; + unsigned char val; + + if (offset > brdp->memsize) { + printk(KERN_ERR "istallion: shared memory pointer=%x out of " + "range at line=%d(%d), brd=%d\n", + (int) offset, line, __LINE__, brdp->brdnr); + ptr = NULL; + val = 0; + } else { + ptr = brdp->membase + (offset % ECP_EIPAGESIZE); + if (offset < ECP_EIPAGESIZE) + val = ECP_EIENABLE; + else + val = ECP_EIENABLE | 0x40; + } + outb(val, (brdp->iobase + ECP_EICONFR)); + return(ptr); +} + +/*****************************************************************************/ + +static void stli_ecpeireset(struct stlibrd *brdp) +{ + outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); + udelay(10); + outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); + udelay(500); +} + +/*****************************************************************************/ + +/* + * The following set of functions act on ECP MCA boards. + */ + +static void stli_ecpmcenable(struct stlibrd *brdp) +{ + outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); +} + +/*****************************************************************************/ + +static void stli_ecpmcdisable(struct stlibrd *brdp) +{ + outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); +} + +/*****************************************************************************/ + +static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + void __iomem *ptr; + unsigned char val; + + if (offset > brdp->memsize) { + printk(KERN_ERR "istallion: shared memory pointer=%x out of " + "range at line=%d(%d), brd=%d\n", + (int) offset, line, __LINE__, brdp->brdnr); + ptr = NULL; + val = 0; + } else { + ptr = brdp->membase + (offset % ECP_MCPAGESIZE); + val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; + } + outb(val, (brdp->iobase + ECP_MCCONFR)); + return(ptr); +} + +/*****************************************************************************/ + +static void stli_ecpmcreset(struct stlibrd *brdp) +{ + outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); + udelay(10); + outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); + udelay(500); +} + +/*****************************************************************************/ + +/* + * The following set of functions act on ECP PCI boards. + */ + +static void stli_ecppciinit(struct stlibrd *brdp) +{ + outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); + udelay(10); + outb(0, (brdp->iobase + ECP_PCICONFR)); + udelay(500); +} + +/*****************************************************************************/ + +static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + void __iomem *ptr; + unsigned char val; + + if (offset > brdp->memsize) { + printk(KERN_ERR "istallion: shared memory pointer=%x out of " + "range at line=%d(%d), board=%d\n", + (int) offset, line, __LINE__, brdp->brdnr); + ptr = NULL; + val = 0; + } else { + ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); + val = (offset / ECP_PCIPAGESIZE) << 1; + } + outb(val, (brdp->iobase + ECP_PCICONFR)); + return(ptr); +} + +/*****************************************************************************/ + +static void stli_ecppcireset(struct stlibrd *brdp) +{ + outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); + udelay(10); + outb(0, (brdp->iobase + ECP_PCICONFR)); + udelay(500); +} + +/*****************************************************************************/ + +/* + * The following routines act on ONboards. + */ + +static void stli_onbinit(struct stlibrd *brdp) +{ + unsigned long memconf; + + outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); + udelay(10); + outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); + mdelay(1000); + + memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; + outb(memconf, (brdp->iobase + ONB_ATMEMAR)); + outb(0x1, brdp->iobase); + mdelay(1); +} + +/*****************************************************************************/ + +static void stli_onbenable(struct stlibrd *brdp) +{ + outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); +} + +/*****************************************************************************/ + +static void stli_onbdisable(struct stlibrd *brdp) +{ + outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); +} + +/*****************************************************************************/ + +static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + void __iomem *ptr; + + if (offset > brdp->memsize) { + printk(KERN_ERR "istallion: shared memory pointer=%x out of " + "range at line=%d(%d), brd=%d\n", + (int) offset, line, __LINE__, brdp->brdnr); + ptr = NULL; + } else { + ptr = brdp->membase + (offset % ONB_ATPAGESIZE); + } + return(ptr); +} + +/*****************************************************************************/ + +static void stli_onbreset(struct stlibrd *brdp) +{ + outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); + udelay(10); + outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); + mdelay(1000); +} + +/*****************************************************************************/ + +/* + * The following routines act on ONboard EISA. + */ + +static void stli_onbeinit(struct stlibrd *brdp) +{ + unsigned long memconf; + + outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); + outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); + udelay(10); + outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); + mdelay(1000); + + memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; + outb(memconf, (brdp->iobase + ONB_EIMEMARL)); + memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; + outb(memconf, (brdp->iobase + ONB_EIMEMARH)); + outb(0x1, brdp->iobase); + mdelay(1); +} + +/*****************************************************************************/ + +static void stli_onbeenable(struct stlibrd *brdp) +{ + outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); +} + +/*****************************************************************************/ + +static void stli_onbedisable(struct stlibrd *brdp) +{ + outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); +} + +/*****************************************************************************/ + +static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + void __iomem *ptr; + unsigned char val; + + if (offset > brdp->memsize) { + printk(KERN_ERR "istallion: shared memory pointer=%x out of " + "range at line=%d(%d), brd=%d\n", + (int) offset, line, __LINE__, brdp->brdnr); + ptr = NULL; + val = 0; + } else { + ptr = brdp->membase + (offset % ONB_EIPAGESIZE); + if (offset < ONB_EIPAGESIZE) + val = ONB_EIENABLE; + else + val = ONB_EIENABLE | 0x40; + } + outb(val, (brdp->iobase + ONB_EICONFR)); + return(ptr); +} + +/*****************************************************************************/ + +static void stli_onbereset(struct stlibrd *brdp) +{ + outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); + udelay(10); + outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); + mdelay(1000); +} + +/*****************************************************************************/ + +/* + * The following routines act on Brumby boards. + */ + +static void stli_bbyinit(struct stlibrd *brdp) +{ + outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); + udelay(10); + outb(0, (brdp->iobase + BBY_ATCONFR)); + mdelay(1000); + outb(0x1, brdp->iobase); + mdelay(1); +} + +/*****************************************************************************/ + +static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + void __iomem *ptr; + unsigned char val; + + BUG_ON(offset > brdp->memsize); + + ptr = brdp->membase + (offset % BBY_PAGESIZE); + val = (unsigned char) (offset / BBY_PAGESIZE); + outb(val, (brdp->iobase + BBY_ATCONFR)); + return(ptr); +} + +/*****************************************************************************/ + +static void stli_bbyreset(struct stlibrd *brdp) +{ + outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); + udelay(10); + outb(0, (brdp->iobase + BBY_ATCONFR)); + mdelay(1000); +} + +/*****************************************************************************/ + +/* + * The following routines act on original old Stallion boards. + */ + +static void stli_stalinit(struct stlibrd *brdp) +{ + outb(0x1, brdp->iobase); + mdelay(1000); +} + +/*****************************************************************************/ + +static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) +{ + BUG_ON(offset > brdp->memsize); + return brdp->membase + (offset % STAL_PAGESIZE); +} + +/*****************************************************************************/ + +static void stli_stalreset(struct stlibrd *brdp) +{ + u32 __iomem *vecp; + + vecp = (u32 __iomem *) (brdp->membase + 0x30); + writel(0xffff0000, vecp); + outb(0, brdp->iobase); + mdelay(1000); +} + +/*****************************************************************************/ + +/* + * Try to find an ECP board and initialize it. This handles only ECP + * board types. + */ + +static int stli_initecp(struct stlibrd *brdp) +{ + cdkecpsig_t sig; + cdkecpsig_t __iomem *sigsp; + unsigned int status, nxtid; + char *name; + int retval, panelnr, nrports; + + if ((brdp->iobase == 0) || (brdp->memaddr == 0)) { + retval = -ENODEV; + goto err; + } + + brdp->iosize = ECP_IOSIZE; + + if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { + retval = -EIO; + goto err; + } + +/* + * Based on the specific board type setup the common vars to access + * and enable shared memory. Set all board specific information now + * as well. + */ + switch (brdp->brdtype) { + case BRD_ECP: + brdp->memsize = ECP_MEMSIZE; + brdp->pagesize = ECP_ATPAGESIZE; + brdp->init = stli_ecpinit; + brdp->enable = stli_ecpenable; + brdp->reenable = stli_ecpenable; + brdp->disable = stli_ecpdisable; + brdp->getmemptr = stli_ecpgetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_ecpreset; + name = "serial(EC8/64)"; + break; + + case BRD_ECPE: + brdp->memsize = ECP_MEMSIZE; + brdp->pagesize = ECP_EIPAGESIZE; + brdp->init = stli_ecpeiinit; + brdp->enable = stli_ecpeienable; + brdp->reenable = stli_ecpeienable; + brdp->disable = stli_ecpeidisable; + brdp->getmemptr = stli_ecpeigetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_ecpeireset; + name = "serial(EC8/64-EI)"; + break; + + case BRD_ECPMC: + brdp->memsize = ECP_MEMSIZE; + brdp->pagesize = ECP_MCPAGESIZE; + brdp->init = NULL; + brdp->enable = stli_ecpmcenable; + brdp->reenable = stli_ecpmcenable; + brdp->disable = stli_ecpmcdisable; + brdp->getmemptr = stli_ecpmcgetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_ecpmcreset; + name = "serial(EC8/64-MCA)"; + break; + + case BRD_ECPPCI: + brdp->memsize = ECP_PCIMEMSIZE; + brdp->pagesize = ECP_PCIPAGESIZE; + brdp->init = stli_ecppciinit; + brdp->enable = NULL; + brdp->reenable = NULL; + brdp->disable = NULL; + brdp->getmemptr = stli_ecppcigetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_ecppcireset; + name = "serial(EC/RA-PCI)"; + break; + + default: + retval = -EINVAL; + goto err_reg; + } + +/* + * The per-board operations structure is all set up, so now let's go + * and get the board operational. Firstly initialize board configuration + * registers. Set the memory mapping info so we can get at the boards + * shared memory. + */ + EBRDINIT(brdp); + + brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); + if (brdp->membase == NULL) { + retval = -ENOMEM; + goto err_reg; + } + +/* + * Now that all specific code is set up, enable the shared memory and + * look for the a signature area that will tell us exactly what board + * this is, and what it is connected to it. + */ + EBRDENABLE(brdp); + sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); + memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); + EBRDDISABLE(brdp); + + if (sig.magic != cpu_to_le32(ECP_MAGIC)) { + retval = -ENODEV; + goto err_unmap; + } + +/* + * Scan through the signature looking at the panels connected to the + * board. Calculate the total number of ports as we go. + */ + for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { + status = sig.panelid[nxtid]; + if ((status & ECH_PNLIDMASK) != nxtid) + break; + + brdp->panelids[panelnr] = status; + nrports = (status & ECH_PNL16PORT) ? 16 : 8; + if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) + nxtid++; + brdp->panels[panelnr] = nrports; + brdp->nrports += nrports; + nxtid++; + brdp->nrpanels++; + } + + + set_bit(BST_FOUND, &brdp->state); + return 0; +err_unmap: + iounmap(brdp->membase); + brdp->membase = NULL; +err_reg: + release_region(brdp->iobase, brdp->iosize); +err: + return retval; +} + +/*****************************************************************************/ + +/* + * Try to find an ONboard, Brumby or Stallion board and initialize it. + * This handles only these board types. + */ + +static int stli_initonb(struct stlibrd *brdp) +{ + cdkonbsig_t sig; + cdkonbsig_t __iomem *sigsp; + char *name; + int i, retval; + +/* + * Do a basic sanity check on the IO and memory addresses. + */ + if (brdp->iobase == 0 || brdp->memaddr == 0) { + retval = -ENODEV; + goto err; + } + + brdp->iosize = ONB_IOSIZE; + + if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { + retval = -EIO; + goto err; + } + +/* + * Based on the specific board type setup the common vars to access + * and enable shared memory. Set all board specific information now + * as well. + */ + switch (brdp->brdtype) { + case BRD_ONBOARD: + case BRD_ONBOARD2: + brdp->memsize = ONB_MEMSIZE; + brdp->pagesize = ONB_ATPAGESIZE; + brdp->init = stli_onbinit; + brdp->enable = stli_onbenable; + brdp->reenable = stli_onbenable; + brdp->disable = stli_onbdisable; + brdp->getmemptr = stli_onbgetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_onbreset; + if (brdp->memaddr > 0x100000) + brdp->enabval = ONB_MEMENABHI; + else + brdp->enabval = ONB_MEMENABLO; + name = "serial(ONBoard)"; + break; + + case BRD_ONBOARDE: + brdp->memsize = ONB_EIMEMSIZE; + brdp->pagesize = ONB_EIPAGESIZE; + brdp->init = stli_onbeinit; + brdp->enable = stli_onbeenable; + brdp->reenable = stli_onbeenable; + brdp->disable = stli_onbedisable; + brdp->getmemptr = stli_onbegetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_onbereset; + name = "serial(ONBoard/E)"; + break; + + case BRD_BRUMBY4: + brdp->memsize = BBY_MEMSIZE; + brdp->pagesize = BBY_PAGESIZE; + brdp->init = stli_bbyinit; + brdp->enable = NULL; + brdp->reenable = NULL; + brdp->disable = NULL; + brdp->getmemptr = stli_bbygetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_bbyreset; + name = "serial(Brumby)"; + break; + + case BRD_STALLION: + brdp->memsize = STAL_MEMSIZE; + brdp->pagesize = STAL_PAGESIZE; + brdp->init = stli_stalinit; + brdp->enable = NULL; + brdp->reenable = NULL; + brdp->disable = NULL; + brdp->getmemptr = stli_stalgetmemptr; + brdp->intr = stli_ecpintr; + brdp->reset = stli_stalreset; + name = "serial(Stallion)"; + break; + + default: + retval = -EINVAL; + goto err_reg; + } + +/* + * The per-board operations structure is all set up, so now let's go + * and get the board operational. Firstly initialize board configuration + * registers. Set the memory mapping info so we can get at the boards + * shared memory. + */ + EBRDINIT(brdp); + + brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); + if (brdp->membase == NULL) { + retval = -ENOMEM; + goto err_reg; + } + +/* + * Now that all specific code is set up, enable the shared memory and + * look for the a signature area that will tell us exactly what board + * this is, and how many ports. + */ + EBRDENABLE(brdp); + sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); + memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); + EBRDDISABLE(brdp); + + if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || + sig.magic1 != cpu_to_le16(ONB_MAGIC1) || + sig.magic2 != cpu_to_le16(ONB_MAGIC2) || + sig.magic3 != cpu_to_le16(ONB_MAGIC3)) { + retval = -ENODEV; + goto err_unmap; + } + +/* + * Scan through the signature alive mask and calculate how many ports + * there are on this board. + */ + brdp->nrpanels = 1; + if (sig.amask1) { + brdp->nrports = 32; + } else { + for (i = 0; (i < 16); i++) { + if (((sig.amask0 << i) & 0x8000) == 0) + break; + } + brdp->nrports = i; + } + brdp->panels[0] = brdp->nrports; + + + set_bit(BST_FOUND, &brdp->state); + return 0; +err_unmap: + iounmap(brdp->membase); + brdp->membase = NULL; +err_reg: + release_region(brdp->iobase, brdp->iosize); +err: + return retval; +} + +/*****************************************************************************/ + +/* + * Start up a running board. This routine is only called after the + * code has been down loaded to the board and is operational. It will + * read in the memory map, and get the show on the road... + */ + +static int stli_startbrd(struct stlibrd *brdp) +{ + cdkhdr_t __iomem *hdrp; + cdkmem_t __iomem *memp; + cdkasy_t __iomem *ap; + unsigned long flags; + unsigned int portnr, nrdevs, i; + struct stliport *portp; + int rc = 0; + u32 memoff; + + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); + nrdevs = hdrp->nrdevs; + +#if 0 + printk("%s(%d): CDK version %d.%d.%d --> " + "nrdevs=%d memp=%x hostp=%x slavep=%x\n", + __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), + readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), + readl(&hdrp->slavep)); +#endif + + if (nrdevs < (brdp->nrports + 1)) { + printk(KERN_ERR "istallion: slave failed to allocate memory for " + "all devices, devices=%d\n", nrdevs); + brdp->nrports = nrdevs - 1; + } + brdp->nrdevs = nrdevs; + brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; + brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; + brdp->bitsize = (nrdevs + 7) / 8; + memoff = readl(&hdrp->memp); + if (memoff > brdp->memsize) { + printk(KERN_ERR "istallion: corrupted shared memory region?\n"); + rc = -EIO; + goto stli_donestartup; + } + memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); + if (readw(&memp->dtype) != TYP_ASYNCTRL) { + printk(KERN_ERR "istallion: no slave control device found\n"); + goto stli_donestartup; + } + memp++; + +/* + * Cycle through memory allocation of each port. We are guaranteed to + * have all ports inside the first page of slave window, so no need to + * change pages while reading memory map. + */ + for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { + if (readw(&memp->dtype) != TYP_ASYNC) + break; + portp = brdp->ports[portnr]; + if (portp == NULL) + break; + portp->devnr = i; + portp->addr = readl(&memp->offset); + portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); + portp->portidx = (unsigned char) (i / 8); + portp->portbit = (unsigned char) (0x1 << (i % 8)); + } + + writeb(0xff, &hdrp->slavereq); + +/* + * For each port setup a local copy of the RX and TX buffer offsets + * and sizes. We do this separate from the above, because we need to + * move the shared memory page... + */ + for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { + portp = brdp->ports[portnr]; + if (portp == NULL) + break; + if (portp->addr == 0) + break; + ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); + if (ap != NULL) { + portp->rxsize = readw(&ap->rxq.size); + portp->txsize = readw(&ap->txq.size); + portp->rxoffset = readl(&ap->rxq.offset); + portp->txoffset = readl(&ap->txq.offset); + } + } + +stli_donestartup: + EBRDDISABLE(brdp); + spin_unlock_irqrestore(&brd_lock, flags); + + if (rc == 0) + set_bit(BST_STARTED, &brdp->state); + + if (! stli_timeron) { + stli_timeron++; + mod_timer(&stli_timerlist, STLI_TIMEOUT); + } + + return rc; +} + +/*****************************************************************************/ + +/* + * Probe and initialize the specified board. + */ + +static int __devinit stli_brdinit(struct stlibrd *brdp) +{ + int retval; + + switch (brdp->brdtype) { + case BRD_ECP: + case BRD_ECPE: + case BRD_ECPMC: + case BRD_ECPPCI: + retval = stli_initecp(brdp); + break; + case BRD_ONBOARD: + case BRD_ONBOARDE: + case BRD_ONBOARD2: + case BRD_BRUMBY4: + case BRD_STALLION: + retval = stli_initonb(brdp); + break; + default: + printk(KERN_ERR "istallion: board=%d is unknown board " + "type=%d\n", brdp->brdnr, brdp->brdtype); + retval = -ENODEV; + } + + if (retval) + return retval; + + stli_initports(brdp); + printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x " + "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], + brdp->brdnr, brdp->iobase, (int) brdp->memaddr, + brdp->nrpanels, brdp->nrports); + return 0; +} + +#if STLI_EISAPROBE != 0 +/*****************************************************************************/ + +/* + * Probe around trying to find where the EISA boards shared memory + * might be. This is a bit if hack, but it is the best we can do. + */ + +static int stli_eisamemprobe(struct stlibrd *brdp) +{ + cdkecpsig_t ecpsig, __iomem *ecpsigp; + cdkonbsig_t onbsig, __iomem *onbsigp; + int i, foundit; + +/* + * First up we reset the board, to get it into a known state. There + * is only 2 board types here we need to worry about. Don;t use the + * standard board init routine here, it programs up the shared + * memory address, and we don't know it yet... + */ + if (brdp->brdtype == BRD_ECPE) { + outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); + outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); + udelay(10); + outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); + udelay(500); + stli_ecpeienable(brdp); + } else if (brdp->brdtype == BRD_ONBOARDE) { + outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); + outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); + udelay(10); + outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); + mdelay(100); + outb(0x1, brdp->iobase); + mdelay(1); + stli_onbeenable(brdp); + } else { + return -ENODEV; + } + + foundit = 0; + brdp->memsize = ECP_MEMSIZE; + +/* + * Board shared memory is enabled, so now we have a poke around and + * see if we can find it. + */ + for (i = 0; (i < stli_eisamempsize); i++) { + brdp->memaddr = stli_eisamemprobeaddrs[i]; + brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); + if (brdp->membase == NULL) + continue; + + if (brdp->brdtype == BRD_ECPE) { + ecpsigp = stli_ecpeigetmemptr(brdp, + CDK_SIGADDR, __LINE__); + memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); + if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) + foundit = 1; + } else { + onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, + CDK_SIGADDR, __LINE__); + memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); + if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && + (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && + (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && + (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) + foundit = 1; + } + + iounmap(brdp->membase); + if (foundit) + break; + } + +/* + * Regardless of whether we found the shared memory or not we must + * disable the region. After that return success or failure. + */ + if (brdp->brdtype == BRD_ECPE) + stli_ecpeidisable(brdp); + else + stli_onbedisable(brdp); + + if (! foundit) { + brdp->memaddr = 0; + brdp->membase = NULL; + printk(KERN_ERR "istallion: failed to probe shared memory " + "region for %s in EISA slot=%d\n", + stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); + return -ENODEV; + } + return 0; +} +#endif + +static int stli_getbrdnr(void) +{ + unsigned int i; + + for (i = 0; i < STL_MAXBRDS; i++) { + if (!stli_brds[i]) { + if (i >= stli_nrbrds) + stli_nrbrds = i + 1; + return i; + } + } + return -1; +} + +#if STLI_EISAPROBE != 0 +/*****************************************************************************/ + +/* + * Probe around and try to find any EISA boards in system. The biggest + * problem here is finding out what memory address is associated with + * an EISA board after it is found. The registers of the ECPE and + * ONboardE are not readable - so we can't read them from there. We + * don't have access to the EISA CMOS (or EISA BIOS) so we don't + * actually have any way to find out the real value. The best we can + * do is go probing around in the usual places hoping we can find it. + */ + +static int __init stli_findeisabrds(void) +{ + struct stlibrd *brdp; + unsigned int iobase, eid, i; + int brdnr, found = 0; + +/* + * Firstly check if this is an EISA system. If this is not an EISA system then + * don't bother going any further! + */ + if (EISA_bus) + return 0; + +/* + * Looks like an EISA system, so go searching for EISA boards. + */ + for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { + outb(0xff, (iobase + 0xc80)); + eid = inb(iobase + 0xc80); + eid |= inb(iobase + 0xc81) << 8; + if (eid != STL_EISAID) + continue; + +/* + * We have found a board. Need to check if this board was + * statically configured already (just in case!). + */ + for (i = 0; (i < STL_MAXBRDS); i++) { + brdp = stli_brds[i]; + if (brdp == NULL) + continue; + if (brdp->iobase == iobase) + break; + } + if (i < STL_MAXBRDS) + continue; + +/* + * We have found a Stallion board and it is not configured already. + * Allocate a board structure and initialize it. + */ + if ((brdp = stli_allocbrd()) == NULL) + return found ? : -ENOMEM; + brdnr = stli_getbrdnr(); + if (brdnr < 0) + return found ? : -ENOMEM; + brdp->brdnr = (unsigned int)brdnr; + eid = inb(iobase + 0xc82); + if (eid == ECP_EISAID) + brdp->brdtype = BRD_ECPE; + else if (eid == ONB_EISAID) + brdp->brdtype = BRD_ONBOARDE; + else + brdp->brdtype = BRD_UNKNOWN; + brdp->iobase = iobase; + outb(0x1, (iobase + 0xc84)); + if (stli_eisamemprobe(brdp)) + outb(0, (iobase + 0xc84)); + if (stli_brdinit(brdp) < 0) { + kfree(brdp); + continue; + } + + stli_brds[brdp->brdnr] = brdp; + found++; + + for (i = 0; i < brdp->nrports; i++) + tty_register_device(stli_serial, + brdp->brdnr * STL_MAXPORTS + i, NULL); + } + + return found; +} +#else +static inline int stli_findeisabrds(void) { return 0; } +#endif + +/*****************************************************************************/ + +/* + * Find the next available board number that is free. + */ + +/*****************************************************************************/ + +/* + * We have a Stallion board. Allocate a board structure and + * initialize it. Read its IO and MEMORY resources from PCI + * configuration space. + */ + +static int __devinit stli_pciprobe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct stlibrd *brdp; + unsigned int i; + int brdnr, retval = -EIO; + + retval = pci_enable_device(pdev); + if (retval) + goto err; + brdp = stli_allocbrd(); + if (brdp == NULL) { + retval = -ENOMEM; + goto err; + } + mutex_lock(&stli_brdslock); + brdnr = stli_getbrdnr(); + if (brdnr < 0) { + printk(KERN_INFO "istallion: too many boards found, " + "maximum supported %d\n", STL_MAXBRDS); + mutex_unlock(&stli_brdslock); + retval = -EIO; + goto err_fr; + } + brdp->brdnr = (unsigned int)brdnr; + stli_brds[brdp->brdnr] = brdp; + mutex_unlock(&stli_brdslock); + brdp->brdtype = BRD_ECPPCI; +/* + * We have all resources from the board, so lets setup the actual + * board structure now. + */ + brdp->iobase = pci_resource_start(pdev, 3); + brdp->memaddr = pci_resource_start(pdev, 2); + retval = stli_brdinit(brdp); + if (retval) + goto err_null; + + set_bit(BST_PROBED, &brdp->state); + pci_set_drvdata(pdev, brdp); + + EBRDENABLE(brdp); + brdp->enable = NULL; + brdp->disable = NULL; + + for (i = 0; i < brdp->nrports; i++) + tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i, + &pdev->dev); + + return 0; +err_null: + stli_brds[brdp->brdnr] = NULL; +err_fr: + kfree(brdp); +err: + return retval; +} + +static void __devexit stli_pciremove(struct pci_dev *pdev) +{ + struct stlibrd *brdp = pci_get_drvdata(pdev); + + stli_cleanup_ports(brdp); + + iounmap(brdp->membase); + if (brdp->iosize > 0) + release_region(brdp->iobase, brdp->iosize); + + stli_brds[brdp->brdnr] = NULL; + kfree(brdp); +} + +static struct pci_driver stli_pcidriver = { + .name = "istallion", + .id_table = istallion_pci_tbl, + .probe = stli_pciprobe, + .remove = __devexit_p(stli_pciremove) +}; +/*****************************************************************************/ + +/* + * Allocate a new board structure. Fill out the basic info in it. + */ + +static struct stlibrd *stli_allocbrd(void) +{ + struct stlibrd *brdp; + + brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); + if (!brdp) { + printk(KERN_ERR "istallion: failed to allocate memory " + "(size=%Zd)\n", sizeof(struct stlibrd)); + return NULL; + } + brdp->magic = STLI_BOARDMAGIC; + return brdp; +} + +/*****************************************************************************/ + +/* + * Scan through all the boards in the configuration and see what we + * can find. + */ + +static int __init stli_initbrds(void) +{ + struct stlibrd *brdp, *nxtbrdp; + struct stlconf conf; + unsigned int i, j, found = 0; + int retval; + + for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); + stli_nrbrds++) { + memset(&conf, 0, sizeof(conf)); + if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) + continue; + if ((brdp = stli_allocbrd()) == NULL) + continue; + brdp->brdnr = stli_nrbrds; + brdp->brdtype = conf.brdtype; + brdp->iobase = conf.ioaddr1; + brdp->memaddr = conf.memaddr; + if (stli_brdinit(brdp) < 0) { + kfree(brdp); + continue; + } + stli_brds[brdp->brdnr] = brdp; + found++; + + for (i = 0; i < brdp->nrports; i++) + tty_register_device(stli_serial, + brdp->brdnr * STL_MAXPORTS + i, NULL); + } + + retval = stli_findeisabrds(); + if (retval > 0) + found += retval; + +/* + * All found boards are initialized. Now for a little optimization, if + * no boards are sharing the "shared memory" regions then we can just + * leave them all enabled. This is in fact the usual case. + */ + stli_shared = 0; + if (stli_nrbrds > 1) { + for (i = 0; (i < stli_nrbrds); i++) { + brdp = stli_brds[i]; + if (brdp == NULL) + continue; + for (j = i + 1; (j < stli_nrbrds); j++) { + nxtbrdp = stli_brds[j]; + if (nxtbrdp == NULL) + continue; + if ((brdp->membase >= nxtbrdp->membase) && + (brdp->membase <= (nxtbrdp->membase + + nxtbrdp->memsize - 1))) { + stli_shared++; + break; + } + } + } + } + + if (stli_shared == 0) { + for (i = 0; (i < stli_nrbrds); i++) { + brdp = stli_brds[i]; + if (brdp == NULL) + continue; + if (test_bit(BST_FOUND, &brdp->state)) { + EBRDENABLE(brdp); + brdp->enable = NULL; + brdp->disable = NULL; + } + } + } + + retval = pci_register_driver(&stli_pcidriver); + if (retval && found == 0) { + printk(KERN_ERR "Neither isa nor eisa cards found nor pci " + "driver can be registered!\n"); + goto err; + } + + return 0; +err: + return retval; +} + +/*****************************************************************************/ + +/* + * Code to handle an "staliomem" read operation. This device is the + * contents of the board shared memory. It is used for down loading + * the slave image (and debugging :-) + */ + +static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) +{ + unsigned long flags; + void __iomem *memptr; + struct stlibrd *brdp; + unsigned int brdnr; + int size, n; + void *p; + loff_t off = *offp; + + brdnr = iminor(fp->f_path.dentry->d_inode); + if (brdnr >= stli_nrbrds) + return -ENODEV; + brdp = stli_brds[brdnr]; + if (brdp == NULL) + return -ENODEV; + if (brdp->state == 0) + return -ENODEV; + if (off >= brdp->memsize || off + count < off) + return 0; + + size = min(count, (size_t)(brdp->memsize - off)); + + /* + * Copy the data a page at a time + */ + + p = (void *)__get_free_page(GFP_KERNEL); + if(p == NULL) + return -ENOMEM; + + while (size > 0) { + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + memptr = EBRDGETMEMPTR(brdp, off); + n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); + n = min(n, (int)PAGE_SIZE); + memcpy_fromio(p, memptr, n); + EBRDDISABLE(brdp); + spin_unlock_irqrestore(&brd_lock, flags); + if (copy_to_user(buf, p, n)) { + count = -EFAULT; + goto out; + } + off += n; + buf += n; + size -= n; + } +out: + *offp = off; + free_page((unsigned long)p); + return count; +} + +/*****************************************************************************/ + +/* + * Code to handle an "staliomem" write operation. This device is the + * contents of the board shared memory. It is used for down loading + * the slave image (and debugging :-) + * + * FIXME: copy under lock + */ + +static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) +{ + unsigned long flags; + void __iomem *memptr; + struct stlibrd *brdp; + char __user *chbuf; + unsigned int brdnr; + int size, n; + void *p; + loff_t off = *offp; + + brdnr = iminor(fp->f_path.dentry->d_inode); + + if (brdnr >= stli_nrbrds) + return -ENODEV; + brdp = stli_brds[brdnr]; + if (brdp == NULL) + return -ENODEV; + if (brdp->state == 0) + return -ENODEV; + if (off >= brdp->memsize || off + count < off) + return 0; + + chbuf = (char __user *) buf; + size = min(count, (size_t)(brdp->memsize - off)); + + /* + * Copy the data a page at a time + */ + + p = (void *)__get_free_page(GFP_KERNEL); + if(p == NULL) + return -ENOMEM; + + while (size > 0) { + n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); + n = min(n, (int)PAGE_SIZE); + if (copy_from_user(p, chbuf, n)) { + if (count == 0) + count = -EFAULT; + goto out; + } + spin_lock_irqsave(&brd_lock, flags); + EBRDENABLE(brdp); + memptr = EBRDGETMEMPTR(brdp, off); + memcpy_toio(memptr, p, n); + EBRDDISABLE(brdp); + spin_unlock_irqrestore(&brd_lock, flags); + off += n; + chbuf += n; + size -= n; + } +out: + free_page((unsigned long) p); + *offp = off; + return count; +} + +/*****************************************************************************/ + +/* + * Return the board stats structure to user app. + */ + +static int stli_getbrdstats(combrd_t __user *bp) +{ + struct stlibrd *brdp; + unsigned int i; + + if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) + return -EFAULT; + if (stli_brdstats.brd >= STL_MAXBRDS) + return -ENODEV; + brdp = stli_brds[stli_brdstats.brd]; + if (brdp == NULL) + return -ENODEV; + + memset(&stli_brdstats, 0, sizeof(combrd_t)); + + stli_brdstats.brd = brdp->brdnr; + stli_brdstats.type = brdp->brdtype; + stli_brdstats.hwid = 0; + stli_brdstats.state = brdp->state; + stli_brdstats.ioaddr = brdp->iobase; + stli_brdstats.memaddr = brdp->memaddr; + stli_brdstats.nrpanels = brdp->nrpanels; + stli_brdstats.nrports = brdp->nrports; + for (i = 0; (i < brdp->nrpanels); i++) { + stli_brdstats.panels[i].panel = i; + stli_brdstats.panels[i].hwid = brdp->panelids[i]; + stli_brdstats.panels[i].nrports = brdp->panels[i]; + } + + if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) + return -EFAULT; + return 0; +} + +/*****************************************************************************/ + +/* + * Resolve the referenced port number into a port struct pointer. + */ + +static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, + unsigned int portnr) +{ + struct stlibrd *brdp; + unsigned int i; + + if (brdnr >= STL_MAXBRDS) + return NULL; + brdp = stli_brds[brdnr]; + if (brdp == NULL) + return NULL; + for (i = 0; (i < panelnr); i++) + portnr += brdp->panels[i]; + if (portnr >= brdp->nrports) + return NULL; + return brdp->ports[portnr]; +} + +/*****************************************************************************/ + +/* + * Return the port stats structure to user app. A NULL port struct + * pointer passed in means that we need to find out from the app + * what port to get stats for (used through board control device). + */ + +static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp) +{ + unsigned long flags; + struct stlibrd *brdp; + int rc; + + memset(&stli_comstats, 0, sizeof(comstats_t)); + + if (portp == NULL) + return -ENODEV; + brdp = stli_brds[portp->brdnr]; + if (brdp == NULL) + return -ENODEV; + + mutex_lock(&portp->port.mutex); + if (test_bit(BST_STARTED, &brdp->state)) { + if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, + &stli_cdkstats, sizeof(asystats_t), 1)) < 0) { + mutex_unlock(&portp->port.mutex); + return rc; + } + } else { + memset(&stli_cdkstats, 0, sizeof(asystats_t)); + } + + stli_comstats.brd = portp->brdnr; + stli_comstats.panel = portp->panelnr; + stli_comstats.port = portp->portnr; + stli_comstats.state = portp->state; + stli_comstats.flags = portp->port.flags; + + spin_lock_irqsave(&brd_lock, flags); + if (tty != NULL) { + if (portp->port.tty == tty) { + stli_comstats.ttystate = tty->flags; + stli_comstats.rxbuffered = -1; + if (tty->termios != NULL) { + stli_comstats.cflags = tty->termios->c_cflag; + stli_comstats.iflags = tty->termios->c_iflag; + stli_comstats.oflags = tty->termios->c_oflag; + stli_comstats.lflags = tty->termios->c_lflag; + } + } + } + spin_unlock_irqrestore(&brd_lock, flags); + + stli_comstats.txtotal = stli_cdkstats.txchars; + stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; + stli_comstats.txbuffered = stli_cdkstats.txringq; + stli_comstats.rxbuffered += stli_cdkstats.rxringq; + stli_comstats.rxoverrun = stli_cdkstats.overruns; + stli_comstats.rxparity = stli_cdkstats.parity; + stli_comstats.rxframing = stli_cdkstats.framing; + stli_comstats.rxlost = stli_cdkstats.ringover; + stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; + stli_comstats.txbreaks = stli_cdkstats.txbreaks; + stli_comstats.txxon = stli_cdkstats.txstart; + stli_comstats.txxoff = stli_cdkstats.txstop; + stli_comstats.rxxon = stli_cdkstats.rxstart; + stli_comstats.rxxoff = stli_cdkstats.rxstop; + stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; + stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; + stli_comstats.modem = stli_cdkstats.dcdcnt; + stli_comstats.hwid = stli_cdkstats.hwid; + stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); + mutex_unlock(&portp->port.mutex); + + return 0; +} + +/*****************************************************************************/ + +/* + * Return the port stats structure to user app. A NULL port struct + * pointer passed in means that we need to find out from the app + * what port to get stats for (used through board control device). + */ + +static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, + comstats_t __user *cp) +{ + struct stlibrd *brdp; + int rc; + + if (!portp) { + if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) + return -EFAULT; + portp = stli_getport(stli_comstats.brd, stli_comstats.panel, + stli_comstats.port); + if (!portp) + return -ENODEV; + } + + brdp = stli_brds[portp->brdnr]; + if (!brdp) + return -ENODEV; + + if ((rc = stli_portcmdstats(tty, portp)) < 0) + return rc; + + return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? + -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * Clear the port stats structure. We also return it zeroed out... + */ + +static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) +{ + struct stlibrd *brdp; + int rc; + + if (!portp) { + if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) + return -EFAULT; + portp = stli_getport(stli_comstats.brd, stli_comstats.panel, + stli_comstats.port); + if (!portp) + return -ENODEV; + } + + brdp = stli_brds[portp->brdnr]; + if (!brdp) + return -ENODEV; + + mutex_lock(&portp->port.mutex); + + if (test_bit(BST_STARTED, &brdp->state)) { + if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) { + mutex_unlock(&portp->port.mutex); + return rc; + } + } + + memset(&stli_comstats, 0, sizeof(comstats_t)); + stli_comstats.brd = portp->brdnr; + stli_comstats.panel = portp->panelnr; + stli_comstats.port = portp->portnr; + mutex_unlock(&portp->port.mutex); + + if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) + return -EFAULT; + return 0; +} + +/*****************************************************************************/ + +/* + * Return the entire driver ports structure to a user app. + */ + +static int stli_getportstruct(struct stliport __user *arg) +{ + struct stliport stli_dummyport; + struct stliport *portp; + + if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) + return -EFAULT; + portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, + stli_dummyport.portnr); + if (!portp) + return -ENODEV; + if (copy_to_user(arg, portp, sizeof(struct stliport))) + return -EFAULT; + return 0; +} + +/*****************************************************************************/ + +/* + * Return the entire driver board structure to a user app. + */ + +static int stli_getbrdstruct(struct stlibrd __user *arg) +{ + struct stlibrd stli_dummybrd; + struct stlibrd *brdp; + + if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) + return -EFAULT; + if (stli_dummybrd.brdnr >= STL_MAXBRDS) + return -ENODEV; + brdp = stli_brds[stli_dummybrd.brdnr]; + if (!brdp) + return -ENODEV; + if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) + return -EFAULT; + return 0; +} + +/*****************************************************************************/ + +/* + * The "staliomem" device is also required to do some special operations on + * the board. We need to be able to send an interrupt to the board, + * reset it, and start/stop it. + */ + +static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg) +{ + struct stlibrd *brdp; + int brdnr, rc, done; + void __user *argp = (void __user *)arg; + +/* + * First up handle the board independent ioctls. + */ + done = 0; + rc = 0; + + switch (cmd) { + case COM_GETPORTSTATS: + rc = stli_getportstats(NULL, NULL, argp); + done++; + break; + case COM_CLRPORTSTATS: + rc = stli_clrportstats(NULL, argp); + done++; + break; + case COM_GETBRDSTATS: + rc = stli_getbrdstats(argp); + done++; + break; + case COM_READPORT: + rc = stli_getportstruct(argp); + done++; + break; + case COM_READBOARD: + rc = stli_getbrdstruct(argp); + done++; + break; + } + if (done) + return rc; + +/* + * Now handle the board specific ioctls. These all depend on the + * minor number of the device they were called from. + */ + brdnr = iminor(fp->f_dentry->d_inode); + if (brdnr >= STL_MAXBRDS) + return -ENODEV; + brdp = stli_brds[brdnr]; + if (!brdp) + return -ENODEV; + if (brdp->state == 0) + return -ENODEV; + + switch (cmd) { + case STL_BINTR: + EBRDINTR(brdp); + break; + case STL_BSTART: + rc = stli_startbrd(brdp); + break; + case STL_BSTOP: + clear_bit(BST_STARTED, &brdp->state); + break; + case STL_BRESET: + clear_bit(BST_STARTED, &brdp->state); + EBRDRESET(brdp); + if (stli_shared == 0) { + if (brdp->reenable != NULL) + (* brdp->reenable)(brdp); + } + break; + default: + rc = -ENOIOCTLCMD; + break; + } + return rc; +} + +static const struct tty_operations stli_ops = { + .open = stli_open, + .close = stli_close, + .write = stli_write, + .put_char = stli_putchar, + .flush_chars = stli_flushchars, + .write_room = stli_writeroom, + .chars_in_buffer = stli_charsinbuffer, + .ioctl = stli_ioctl, + .set_termios = stli_settermios, + .throttle = stli_throttle, + .unthrottle = stli_unthrottle, + .stop = stli_stop, + .start = stli_start, + .hangup = stli_hangup, + .flush_buffer = stli_flushbuffer, + .break_ctl = stli_breakctl, + .wait_until_sent = stli_waituntilsent, + .send_xchar = stli_sendxchar, + .tiocmget = stli_tiocmget, + .tiocmset = stli_tiocmset, + .proc_fops = &stli_proc_fops, +}; + +static const struct tty_port_operations stli_port_ops = { + .carrier_raised = stli_carrier_raised, + .dtr_rts = stli_dtr_rts, + .activate = stli_activate, + .shutdown = stli_shutdown, +}; + +/*****************************************************************************/ +/* + * Loadable module initialization stuff. + */ + +static void istallion_cleanup_isa(void) +{ + struct stlibrd *brdp; + unsigned int j; + + for (j = 0; (j < stli_nrbrds); j++) { + if ((brdp = stli_brds[j]) == NULL || + test_bit(BST_PROBED, &brdp->state)) + continue; + + stli_cleanup_ports(brdp); + + iounmap(brdp->membase); + if (brdp->iosize > 0) + release_region(brdp->iobase, brdp->iosize); + kfree(brdp); + stli_brds[j] = NULL; + } +} + +static int __init istallion_module_init(void) +{ + unsigned int i; + int retval; + + printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); + + spin_lock_init(&stli_lock); + spin_lock_init(&brd_lock); + + stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); + if (!stli_txcookbuf) { + printk(KERN_ERR "istallion: failed to allocate memory " + "(size=%d)\n", STLI_TXBUFSIZE); + retval = -ENOMEM; + goto err; + } + + stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); + if (!stli_serial) { + retval = -ENOMEM; + goto err_free; + } + + stli_serial->owner = THIS_MODULE; + stli_serial->driver_name = stli_drvname; + stli_serial->name = stli_serialname; + stli_serial->major = STL_SERIALMAJOR; + stli_serial->minor_start = 0; + stli_serial->type = TTY_DRIVER_TYPE_SERIAL; + stli_serial->subtype = SERIAL_TYPE_NORMAL; + stli_serial->init_termios = stli_deftermios; + stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + tty_set_operations(stli_serial, &stli_ops); + + retval = tty_register_driver(stli_serial); + if (retval) { + printk(KERN_ERR "istallion: failed to register serial driver\n"); + goto err_ttyput; + } + + retval = stli_initbrds(); + if (retval) + goto err_ttyunr; + +/* + * Set up a character driver for the shared memory region. We need this + * to down load the slave code image. Also it is a useful debugging tool. + */ + retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem); + if (retval) { + printk(KERN_ERR "istallion: failed to register serial memory " + "device\n"); + goto err_deinit; + } + + istallion_class = class_create(THIS_MODULE, "staliomem"); + for (i = 0; i < 4; i++) + device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), + NULL, "staliomem%d", i); + + return 0; +err_deinit: + pci_unregister_driver(&stli_pcidriver); + istallion_cleanup_isa(); +err_ttyunr: + tty_unregister_driver(stli_serial); +err_ttyput: + put_tty_driver(stli_serial); +err_free: + kfree(stli_txcookbuf); +err: + return retval; +} + +/*****************************************************************************/ + +static void __exit istallion_module_exit(void) +{ + unsigned int j; + + printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, + stli_drvversion); + + if (stli_timeron) { + stli_timeron = 0; + del_timer_sync(&stli_timerlist); + } + + unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); + + for (j = 0; j < 4; j++) + device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); + class_destroy(istallion_class); + + pci_unregister_driver(&stli_pcidriver); + istallion_cleanup_isa(); + + tty_unregister_driver(stli_serial); + put_tty_driver(stli_serial); + + kfree(stli_txcookbuf); +} + +module_init(istallion_module_init); +module_exit(istallion_module_exit); diff --git a/drivers/staging/tty/riscom8.c b/drivers/staging/tty/riscom8.c new file mode 100644 index 000000000000..602643a40b4b --- /dev/null +++ b/drivers/staging/tty/riscom8.c @@ -0,0 +1,1560 @@ +/* + * linux/drivers/char/riscom.c -- RISCom/8 multiport serial driver. + * + * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) + * + * This code is loosely based on the Linux serial driver, written by + * Linus Torvalds, Theodore T'so and others. The RISCom/8 card + * programming info was obtained from various drivers for other OSes + * (FreeBSD, ISC, etc), but no source code from those drivers were + * directly included in this driver. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Revision 1.1 + * + * ChangeLog: + * Arnaldo Carvalho de Melo - 27-Jun-2001 + * - get rid of check_region and several cleanups + */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "riscom8.h" +#include "riscom8_reg.h" + +/* Am I paranoid or not ? ;-) */ +#define RISCOM_PARANOIA_CHECK + +/* + * Crazy InteliCom/8 boards sometimes have swapped CTS & DSR signals. + * You can slightly speed up things by #undefing the following option, + * if you are REALLY sure that your board is correct one. + */ + +#define RISCOM_BRAIN_DAMAGED_CTS + +/* + * The following defines are mostly for testing purposes. But if you need + * some nice reporting in your syslog, you can define them also. + */ +#undef RC_REPORT_FIFO +#undef RC_REPORT_OVERRUN + + +#define RISCOM_LEGAL_FLAGS \ + (ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \ + ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \ + ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP) + +static struct tty_driver *riscom_driver; + +static DEFINE_SPINLOCK(riscom_lock); + +static struct riscom_board rc_board[RC_NBOARD] = { + { + .base = RC_IOBASE1, + }, + { + .base = RC_IOBASE2, + }, + { + .base = RC_IOBASE3, + }, + { + .base = RC_IOBASE4, + }, +}; + +static struct riscom_port rc_port[RC_NBOARD * RC_NPORT]; + +/* RISCom/8 I/O ports addresses (without address translation) */ +static unsigned short rc_ioport[] = { +#if 1 + 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x09, 0x0a, 0x0b, 0x0c, +#else + 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x09, 0x0a, 0x0b, 0x0c, 0x10, + 0x11, 0x12, 0x18, 0x28, 0x31, 0x32, 0x39, 0x3a, 0x40, 0x41, 0x61, 0x62, + 0x63, 0x64, 0x6b, 0x70, 0x71, 0x78, 0x7a, 0x7b, 0x7f, 0x100, 0x101 +#endif +}; +#define RC_NIOPORT ARRAY_SIZE(rc_ioport) + + +static int rc_paranoia_check(struct riscom_port const *port, + char *name, const char *routine) +{ +#ifdef RISCOM_PARANOIA_CHECK + static const char badmagic[] = KERN_INFO + "rc: Warning: bad riscom port magic number for device %s in %s\n"; + static const char badinfo[] = KERN_INFO + "rc: Warning: null riscom port for device %s in %s\n"; + + if (!port) { + printk(badinfo, name, routine); + return 1; + } + if (port->magic != RISCOM8_MAGIC) { + printk(badmagic, name, routine); + return 1; + } +#endif + return 0; +} + +/* + * + * Service functions for RISCom/8 driver. + * + */ + +/* Get board number from pointer */ +static inline int board_No(struct riscom_board const *bp) +{ + return bp - rc_board; +} + +/* Get port number from pointer */ +static inline int port_No(struct riscom_port const *port) +{ + return RC_PORT(port - rc_port); +} + +/* Get pointer to board from pointer to port */ +static inline struct riscom_board *port_Board(struct riscom_port const *port) +{ + return &rc_board[RC_BOARD(port - rc_port)]; +} + +/* Input Byte from CL CD180 register */ +static inline unsigned char rc_in(struct riscom_board const *bp, + unsigned short reg) +{ + return inb(bp->base + RC_TO_ISA(reg)); +} + +/* Output Byte to CL CD180 register */ +static inline void rc_out(struct riscom_board const *bp, unsigned short reg, + unsigned char val) +{ + outb(val, bp->base + RC_TO_ISA(reg)); +} + +/* Wait for Channel Command Register ready */ +static void rc_wait_CCR(struct riscom_board const *bp) +{ + unsigned long delay; + + /* FIXME: need something more descriptive then 100000 :) */ + for (delay = 100000; delay; delay--) + if (!rc_in(bp, CD180_CCR)) + return; + + printk(KERN_INFO "rc%d: Timeout waiting for CCR.\n", board_No(bp)); +} + +/* + * RISCom/8 probe functions. + */ + +static int rc_request_io_range(struct riscom_board * const bp) +{ + int i; + + for (i = 0; i < RC_NIOPORT; i++) + if (!request_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1, + "RISCom/8")) { + goto out_release; + } + return 0; +out_release: + printk(KERN_INFO "rc%d: Skipping probe at 0x%03x. IO address in use.\n", + board_No(bp), bp->base); + while (--i >= 0) + release_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1); + return 1; +} + +static void rc_release_io_range(struct riscom_board * const bp) +{ + int i; + + for (i = 0; i < RC_NIOPORT; i++) + release_region(RC_TO_ISA(rc_ioport[i]) + bp->base, 1); +} + +/* Reset and setup CD180 chip */ +static void __init rc_init_CD180(struct riscom_board const *bp) +{ + unsigned long flags; + + spin_lock_irqsave(&riscom_lock, flags); + + rc_out(bp, RC_CTOUT, 0); /* Clear timeout */ + rc_wait_CCR(bp); /* Wait for CCR ready */ + rc_out(bp, CD180_CCR, CCR_HARDRESET); /* Reset CD180 chip */ + spin_unlock_irqrestore(&riscom_lock, flags); + msleep(50); /* Delay 0.05 sec */ + spin_lock_irqsave(&riscom_lock, flags); + rc_out(bp, CD180_GIVR, RC_ID); /* Set ID for this chip */ + rc_out(bp, CD180_GICR, 0); /* Clear all bits */ + rc_out(bp, CD180_PILR1, RC_ACK_MINT); /* Prio for modem intr */ + rc_out(bp, CD180_PILR2, RC_ACK_TINT); /* Prio for tx intr */ + rc_out(bp, CD180_PILR3, RC_ACK_RINT); /* Prio for rx intr */ + + /* Setting up prescaler. We need 4 ticks per 1 ms */ + rc_out(bp, CD180_PPRH, (RC_OSCFREQ/(1000000/RISCOM_TPS)) >> 8); + rc_out(bp, CD180_PPRL, (RC_OSCFREQ/(1000000/RISCOM_TPS)) & 0xff); + + spin_unlock_irqrestore(&riscom_lock, flags); +} + +/* Main probing routine, also sets irq. */ +static int __init rc_probe(struct riscom_board *bp) +{ + unsigned char val1, val2; + int irqs = 0; + int retries; + + bp->irq = 0; + + if (rc_request_io_range(bp)) + return 1; + + /* Are the I/O ports here ? */ + rc_out(bp, CD180_PPRL, 0x5a); + outb(0xff, 0x80); + val1 = rc_in(bp, CD180_PPRL); + rc_out(bp, CD180_PPRL, 0xa5); + outb(0x00, 0x80); + val2 = rc_in(bp, CD180_PPRL); + + if ((val1 != 0x5a) || (val2 != 0xa5)) { + printk(KERN_ERR "rc%d: RISCom/8 Board at 0x%03x not found.\n", + board_No(bp), bp->base); + goto out_release; + } + + /* It's time to find IRQ for this board */ + for (retries = 0; retries < 5 && irqs <= 0; retries++) { + irqs = probe_irq_on(); + rc_init_CD180(bp); /* Reset CD180 chip */ + rc_out(bp, CD180_CAR, 2); /* Select port 2 */ + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_TXEN); /* Enable transmitter */ + rc_out(bp, CD180_IER, IER_TXRDY);/* Enable tx empty intr */ + msleep(50); + irqs = probe_irq_off(irqs); + val1 = rc_in(bp, RC_BSR); /* Get Board Status reg */ + val2 = rc_in(bp, RC_ACK_TINT); /* ACK interrupt */ + rc_init_CD180(bp); /* Reset CD180 again */ + + if ((val1 & RC_BSR_TINT) || (val2 != (RC_ID | GIVR_IT_TX))) { + printk(KERN_ERR "rc%d: RISCom/8 Board at 0x%03x not " + "found.\n", board_No(bp), bp->base); + goto out_release; + } + } + + if (irqs <= 0) { + printk(KERN_ERR "rc%d: Can't find IRQ for RISCom/8 board " + "at 0x%03x.\n", board_No(bp), bp->base); + goto out_release; + } + bp->irq = irqs; + bp->flags |= RC_BOARD_PRESENT; + + printk(KERN_INFO "rc%d: RISCom/8 Rev. %c board detected at " + "0x%03x, IRQ %d.\n", + board_No(bp), + (rc_in(bp, CD180_GFRCR) & 0x0f) + 'A', /* Board revision */ + bp->base, bp->irq); + + return 0; +out_release: + rc_release_io_range(bp); + return 1; +} + +/* + * + * Interrupt processing routines. + * + */ + +static struct riscom_port *rc_get_port(struct riscom_board const *bp, + unsigned char const *what) +{ + unsigned char channel; + struct riscom_port *port; + + channel = rc_in(bp, CD180_GICR) >> GICR_CHAN_OFF; + if (channel < CD180_NCH) { + port = &rc_port[board_No(bp) * RC_NPORT + channel]; + if (port->port.flags & ASYNC_INITIALIZED) + return port; + } + printk(KERN_ERR "rc%d: %s interrupt from invalid port %d\n", + board_No(bp), what, channel); + return NULL; +} + +static void rc_receive_exc(struct riscom_board const *bp) +{ + struct riscom_port *port; + struct tty_struct *tty; + unsigned char status; + unsigned char ch, flag; + + port = rc_get_port(bp, "Receive"); + if (port == NULL) + return; + + tty = tty_port_tty_get(&port->port); + +#ifdef RC_REPORT_OVERRUN + status = rc_in(bp, CD180_RCSR); + if (status & RCSR_OE) + port->overrun++; + status &= port->mark_mask; +#else + status = rc_in(bp, CD180_RCSR) & port->mark_mask; +#endif + ch = rc_in(bp, CD180_RDR); + if (!status) + goto out; + if (status & RCSR_TOUT) { + printk(KERN_WARNING "rc%d: port %d: Receiver timeout. " + "Hardware problems ?\n", + board_No(bp), port_No(port)); + goto out; + + } else if (status & RCSR_BREAK) { + printk(KERN_INFO "rc%d: port %d: Handling break...\n", + board_No(bp), port_No(port)); + flag = TTY_BREAK; + if (tty && (port->port.flags & ASYNC_SAK)) + do_SAK(tty); + + } else if (status & RCSR_PE) + flag = TTY_PARITY; + + else if (status & RCSR_FE) + flag = TTY_FRAME; + + else if (status & RCSR_OE) + flag = TTY_OVERRUN; + else + flag = TTY_NORMAL; + + if (tty) { + tty_insert_flip_char(tty, ch, flag); + tty_flip_buffer_push(tty); + } +out: + tty_kref_put(tty); +} + +static void rc_receive(struct riscom_board const *bp) +{ + struct riscom_port *port; + struct tty_struct *tty; + unsigned char count; + + port = rc_get_port(bp, "Receive"); + if (port == NULL) + return; + + tty = tty_port_tty_get(&port->port); + + count = rc_in(bp, CD180_RDCR); + +#ifdef RC_REPORT_FIFO + port->hits[count > 8 ? 9 : count]++; +#endif + + while (count--) { + u8 ch = rc_in(bp, CD180_RDR); + if (tty) + tty_insert_flip_char(tty, ch, TTY_NORMAL); + } + if (tty) { + tty_flip_buffer_push(tty); + tty_kref_put(tty); + } +} + +static void rc_transmit(struct riscom_board const *bp) +{ + struct riscom_port *port; + struct tty_struct *tty; + unsigned char count; + + port = rc_get_port(bp, "Transmit"); + if (port == NULL) + return; + + tty = tty_port_tty_get(&port->port); + + if (port->IER & IER_TXEMPTY) { + /* FIFO drained */ + rc_out(bp, CD180_CAR, port_No(port)); + port->IER &= ~IER_TXEMPTY; + rc_out(bp, CD180_IER, port->IER); + goto out; + } + + if ((port->xmit_cnt <= 0 && !port->break_length) + || (tty && (tty->stopped || tty->hw_stopped))) { + rc_out(bp, CD180_CAR, port_No(port)); + port->IER &= ~IER_TXRDY; + rc_out(bp, CD180_IER, port->IER); + goto out; + } + + if (port->break_length) { + if (port->break_length > 0) { + if (port->COR2 & COR2_ETC) { + rc_out(bp, CD180_TDR, CD180_C_ESC); + rc_out(bp, CD180_TDR, CD180_C_SBRK); + port->COR2 &= ~COR2_ETC; + } + count = min_t(int, port->break_length, 0xff); + rc_out(bp, CD180_TDR, CD180_C_ESC); + rc_out(bp, CD180_TDR, CD180_C_DELAY); + rc_out(bp, CD180_TDR, count); + port->break_length -= count; + if (port->break_length == 0) + port->break_length--; + } else { + rc_out(bp, CD180_TDR, CD180_C_ESC); + rc_out(bp, CD180_TDR, CD180_C_EBRK); + rc_out(bp, CD180_COR2, port->COR2); + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_CORCHG2); + port->break_length = 0; + } + goto out; + } + + count = CD180_NFIFO; + do { + rc_out(bp, CD180_TDR, port->port.xmit_buf[port->xmit_tail++]); + port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1); + if (--port->xmit_cnt <= 0) + break; + } while (--count > 0); + + if (port->xmit_cnt <= 0) { + rc_out(bp, CD180_CAR, port_No(port)); + port->IER &= ~IER_TXRDY; + rc_out(bp, CD180_IER, port->IER); + } + if (tty && port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); +out: + tty_kref_put(tty); +} + +static void rc_check_modem(struct riscom_board const *bp) +{ + struct riscom_port *port; + struct tty_struct *tty; + unsigned char mcr; + + port = rc_get_port(bp, "Modem"); + if (port == NULL) + return; + + tty = tty_port_tty_get(&port->port); + + mcr = rc_in(bp, CD180_MCR); + if (mcr & MCR_CDCHG) { + if (rc_in(bp, CD180_MSVR) & MSVR_CD) + wake_up_interruptible(&port->port.open_wait); + else if (tty) + tty_hangup(tty); + } + +#ifdef RISCOM_BRAIN_DAMAGED_CTS + if (mcr & MCR_CTSCHG) { + if (rc_in(bp, CD180_MSVR) & MSVR_CTS) { + port->IER |= IER_TXRDY; + if (tty) { + tty->hw_stopped = 0; + if (port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); + } + } else { + if (tty) + tty->hw_stopped = 1; + port->IER &= ~IER_TXRDY; + } + rc_out(bp, CD180_IER, port->IER); + } + if (mcr & MCR_DSRCHG) { + if (rc_in(bp, CD180_MSVR) & MSVR_DSR) { + port->IER |= IER_TXRDY; + if (tty) { + tty->hw_stopped = 0; + if (port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); + } + } else { + if (tty) + tty->hw_stopped = 1; + port->IER &= ~IER_TXRDY; + } + rc_out(bp, CD180_IER, port->IER); + } +#endif /* RISCOM_BRAIN_DAMAGED_CTS */ + + /* Clear change bits */ + rc_out(bp, CD180_MCR, 0); + tty_kref_put(tty); +} + +/* The main interrupt processing routine */ +static irqreturn_t rc_interrupt(int dummy, void *dev_id) +{ + unsigned char status; + unsigned char ack; + struct riscom_board *bp = dev_id; + unsigned long loop = 0; + int handled = 0; + + if (!(bp->flags & RC_BOARD_ACTIVE)) + return IRQ_NONE; + + while ((++loop < 16) && ((status = ~(rc_in(bp, RC_BSR))) & + (RC_BSR_TOUT | RC_BSR_TINT | + RC_BSR_MINT | RC_BSR_RINT))) { + handled = 1; + if (status & RC_BSR_TOUT) + printk(KERN_WARNING "rc%d: Got timeout. Hardware " + "error?\n", board_No(bp)); + else if (status & RC_BSR_RINT) { + ack = rc_in(bp, RC_ACK_RINT); + if (ack == (RC_ID | GIVR_IT_RCV)) + rc_receive(bp); + else if (ack == (RC_ID | GIVR_IT_REXC)) + rc_receive_exc(bp); + else + printk(KERN_WARNING "rc%d: Bad receive ack " + "0x%02x.\n", + board_No(bp), ack); + } else if (status & RC_BSR_TINT) { + ack = rc_in(bp, RC_ACK_TINT); + if (ack == (RC_ID | GIVR_IT_TX)) + rc_transmit(bp); + else + printk(KERN_WARNING "rc%d: Bad transmit ack " + "0x%02x.\n", + board_No(bp), ack); + } else /* if (status & RC_BSR_MINT) */ { + ack = rc_in(bp, RC_ACK_MINT); + if (ack == (RC_ID | GIVR_IT_MODEM)) + rc_check_modem(bp); + else + printk(KERN_WARNING "rc%d: Bad modem ack " + "0x%02x.\n", + board_No(bp), ack); + } + rc_out(bp, CD180_EOIR, 0); /* Mark end of interrupt */ + rc_out(bp, RC_CTOUT, 0); /* Clear timeout flag */ + } + return IRQ_RETVAL(handled); +} + +/* + * Routines for open & close processing. + */ + +/* Called with disabled interrupts */ +static int rc_setup_board(struct riscom_board *bp) +{ + int error; + + if (bp->flags & RC_BOARD_ACTIVE) + return 0; + + error = request_irq(bp->irq, rc_interrupt, IRQF_DISABLED, + "RISCom/8", bp); + if (error) + return error; + + rc_out(bp, RC_CTOUT, 0); /* Just in case */ + bp->DTR = ~0; + rc_out(bp, RC_DTR, bp->DTR); /* Drop DTR on all ports */ + + bp->flags |= RC_BOARD_ACTIVE; + + return 0; +} + +/* Called with disabled interrupts */ +static void rc_shutdown_board(struct riscom_board *bp) +{ + if (!(bp->flags & RC_BOARD_ACTIVE)) + return; + + bp->flags &= ~RC_BOARD_ACTIVE; + + free_irq(bp->irq, NULL); + + bp->DTR = ~0; + rc_out(bp, RC_DTR, bp->DTR); /* Drop DTR on all ports */ + +} + +/* + * Setting up port characteristics. + * Must be called with disabled interrupts + */ +static void rc_change_speed(struct tty_struct *tty, struct riscom_board *bp, + struct riscom_port *port) +{ + unsigned long baud; + long tmp; + unsigned char cor1 = 0, cor3 = 0; + unsigned char mcor1 = 0, mcor2 = 0; + + port->IER = 0; + port->COR2 = 0; + port->MSVR = MSVR_RTS; + + baud = tty_get_baud_rate(tty); + + /* Select port on the board */ + rc_out(bp, CD180_CAR, port_No(port)); + + if (!baud) { + /* Drop DTR & exit */ + bp->DTR |= (1u << port_No(port)); + rc_out(bp, RC_DTR, bp->DTR); + return; + } else { + /* Set DTR on */ + bp->DTR &= ~(1u << port_No(port)); + rc_out(bp, RC_DTR, bp->DTR); + } + + /* + * Now we must calculate some speed depended things + */ + + /* Set baud rate for port */ + tmp = (((RC_OSCFREQ + baud/2) / baud + + CD180_TPC/2) / CD180_TPC); + + rc_out(bp, CD180_RBPRH, (tmp >> 8) & 0xff); + rc_out(bp, CD180_TBPRH, (tmp >> 8) & 0xff); + rc_out(bp, CD180_RBPRL, tmp & 0xff); + rc_out(bp, CD180_TBPRL, tmp & 0xff); + + baud = (baud + 5) / 10; /* Estimated CPS */ + + /* Two timer ticks seems enough to wakeup something like SLIP driver */ + tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO; + port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ? + SERIAL_XMIT_SIZE - 1 : tmp); + + /* Receiver timeout will be transmission time for 1.5 chars */ + tmp = (RISCOM_TPS + RISCOM_TPS/2 + baud/2) / baud; + tmp = (tmp > 0xff) ? 0xff : tmp; + rc_out(bp, CD180_RTPR, tmp); + + switch (C_CSIZE(tty)) { + case CS5: + cor1 |= COR1_5BITS; + break; + case CS6: + cor1 |= COR1_6BITS; + break; + case CS7: + cor1 |= COR1_7BITS; + break; + case CS8: + cor1 |= COR1_8BITS; + break; + } + if (C_CSTOPB(tty)) + cor1 |= COR1_2SB; + + cor1 |= COR1_IGNORE; + if (C_PARENB(tty)) { + cor1 |= COR1_NORMPAR; + if (C_PARODD(tty)) + cor1 |= COR1_ODDP; + if (I_INPCK(tty)) + cor1 &= ~COR1_IGNORE; + } + /* Set marking of some errors */ + port->mark_mask = RCSR_OE | RCSR_TOUT; + if (I_INPCK(tty)) + port->mark_mask |= RCSR_FE | RCSR_PE; + if (I_BRKINT(tty) || I_PARMRK(tty)) + port->mark_mask |= RCSR_BREAK; + if (I_IGNPAR(tty)) + port->mark_mask &= ~(RCSR_FE | RCSR_PE); + if (I_IGNBRK(tty)) { + port->mark_mask &= ~RCSR_BREAK; + if (I_IGNPAR(tty)) + /* Real raw mode. Ignore all */ + port->mark_mask &= ~RCSR_OE; + } + /* Enable Hardware Flow Control */ + if (C_CRTSCTS(tty)) { +#ifdef RISCOM_BRAIN_DAMAGED_CTS + port->IER |= IER_DSR | IER_CTS; + mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD; + mcor2 |= MCOR2_DSROD | MCOR2_CTSOD; + tty->hw_stopped = !(rc_in(bp, CD180_MSVR) & + (MSVR_CTS|MSVR_DSR)); +#else + port->COR2 |= COR2_CTSAE; +#endif + } + /* Enable Software Flow Control. FIXME: I'm not sure about this */ + /* Some people reported that it works, but I still doubt */ + if (I_IXON(tty)) { + port->COR2 |= COR2_TXIBE; + cor3 |= (COR3_FCT | COR3_SCDE); + if (I_IXANY(tty)) + port->COR2 |= COR2_IXM; + rc_out(bp, CD180_SCHR1, START_CHAR(tty)); + rc_out(bp, CD180_SCHR2, STOP_CHAR(tty)); + rc_out(bp, CD180_SCHR3, START_CHAR(tty)); + rc_out(bp, CD180_SCHR4, STOP_CHAR(tty)); + } + if (!C_CLOCAL(tty)) { + /* Enable CD check */ + port->IER |= IER_CD; + mcor1 |= MCOR1_CDZD; + mcor2 |= MCOR2_CDOD; + } + + if (C_CREAD(tty)) + /* Enable receiver */ + port->IER |= IER_RXD; + + /* Set input FIFO size (1-8 bytes) */ + cor3 |= RISCOM_RXFIFO; + /* Setting up CD180 channel registers */ + rc_out(bp, CD180_COR1, cor1); + rc_out(bp, CD180_COR2, port->COR2); + rc_out(bp, CD180_COR3, cor3); + /* Make CD180 know about registers change */ + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); + /* Setting up modem option registers */ + rc_out(bp, CD180_MCOR1, mcor1); + rc_out(bp, CD180_MCOR2, mcor2); + /* Enable CD180 transmitter & receiver */ + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_TXEN | CCR_RXEN); + /* Enable interrupts */ + rc_out(bp, CD180_IER, port->IER); + /* And finally set RTS on */ + rc_out(bp, CD180_MSVR, port->MSVR); +} + +/* Must be called with interrupts enabled */ +static int rc_activate_port(struct tty_port *port, struct tty_struct *tty) +{ + struct riscom_port *rp = container_of(port, struct riscom_port, port); + struct riscom_board *bp = port_Board(rp); + unsigned long flags; + + if (tty_port_alloc_xmit_buf(port) < 0) + return -ENOMEM; + + spin_lock_irqsave(&riscom_lock, flags); + + clear_bit(TTY_IO_ERROR, &tty->flags); + bp->count++; + rp->xmit_cnt = rp->xmit_head = rp->xmit_tail = 0; + rc_change_speed(tty, bp, rp); + spin_unlock_irqrestore(&riscom_lock, flags); + return 0; +} + +/* Must be called with interrupts disabled */ +static void rc_shutdown_port(struct tty_struct *tty, + struct riscom_board *bp, struct riscom_port *port) +{ +#ifdef RC_REPORT_OVERRUN + printk(KERN_INFO "rc%d: port %d: Total %ld overruns were detected.\n", + board_No(bp), port_No(port), port->overrun); +#endif +#ifdef RC_REPORT_FIFO + { + int i; + + printk(KERN_INFO "rc%d: port %d: FIFO hits [ ", + board_No(bp), port_No(port)); + for (i = 0; i < 10; i++) + printk("%ld ", port->hits[i]); + printk("].\n"); + } +#endif + tty_port_free_xmit_buf(&port->port); + + /* Select port */ + rc_out(bp, CD180_CAR, port_No(port)); + /* Reset port */ + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_SOFTRESET); + /* Disable all interrupts from this port */ + port->IER = 0; + rc_out(bp, CD180_IER, port->IER); + + set_bit(TTY_IO_ERROR, &tty->flags); + + if (--bp->count < 0) { + printk(KERN_INFO "rc%d: rc_shutdown_port: " + "bad board count: %d\n", + board_No(bp), bp->count); + bp->count = 0; + } + /* + * If this is the last opened port on the board + * shutdown whole board + */ + if (!bp->count) + rc_shutdown_board(bp); +} + +static int carrier_raised(struct tty_port *port) +{ + struct riscom_port *p = container_of(port, struct riscom_port, port); + struct riscom_board *bp = port_Board(p); + unsigned long flags; + int CD; + + spin_lock_irqsave(&riscom_lock, flags); + rc_out(bp, CD180_CAR, port_No(p)); + CD = rc_in(bp, CD180_MSVR) & MSVR_CD; + rc_out(bp, CD180_MSVR, MSVR_RTS); + bp->DTR &= ~(1u << port_No(p)); + rc_out(bp, RC_DTR, bp->DTR); + spin_unlock_irqrestore(&riscom_lock, flags); + return CD; +} + +static void dtr_rts(struct tty_port *port, int onoff) +{ + struct riscom_port *p = container_of(port, struct riscom_port, port); + struct riscom_board *bp = port_Board(p); + unsigned long flags; + + spin_lock_irqsave(&riscom_lock, flags); + bp->DTR &= ~(1u << port_No(p)); + if (onoff == 0) + bp->DTR |= (1u << port_No(p)); + rc_out(bp, RC_DTR, bp->DTR); + spin_unlock_irqrestore(&riscom_lock, flags); +} + +static int rc_open(struct tty_struct *tty, struct file *filp) +{ + int board; + int error; + struct riscom_port *port; + struct riscom_board *bp; + + board = RC_BOARD(tty->index); + if (board >= RC_NBOARD || !(rc_board[board].flags & RC_BOARD_PRESENT)) + return -ENODEV; + + bp = &rc_board[board]; + port = rc_port + board * RC_NPORT + RC_PORT(tty->index); + if (rc_paranoia_check(port, tty->name, "rc_open")) + return -ENODEV; + + error = rc_setup_board(bp); + if (error) + return error; + + tty->driver_data = port; + return tty_port_open(&port->port, tty, filp); +} + +static void rc_flush_buffer(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_flush_buffer")) + return; + + spin_lock_irqsave(&riscom_lock, flags); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore(&riscom_lock, flags); + + tty_wakeup(tty); +} + +static void rc_close_port(struct tty_port *port) +{ + unsigned long flags; + struct riscom_port *rp = container_of(port, struct riscom_port, port); + struct riscom_board *bp = port_Board(rp); + unsigned long timeout; + + /* + * At this point we stop accepting input. To do this, we + * disable the receive line status interrupts, and tell the + * interrupt driver to stop checking the data ready bit in the + * line status register. + */ + + spin_lock_irqsave(&riscom_lock, flags); + rp->IER &= ~IER_RXD; + + rp->IER &= ~IER_TXRDY; + rp->IER |= IER_TXEMPTY; + rc_out(bp, CD180_CAR, port_No(rp)); + rc_out(bp, CD180_IER, rp->IER); + /* + * Before we drop DTR, make sure the UART transmitter + * has completely drained; this is especially + * important if there is a transmit FIFO! + */ + timeout = jiffies + HZ; + while (rp->IER & IER_TXEMPTY) { + spin_unlock_irqrestore(&riscom_lock, flags); + msleep_interruptible(jiffies_to_msecs(rp->timeout)); + spin_lock_irqsave(&riscom_lock, flags); + if (time_after(jiffies, timeout)) + break; + } + rc_shutdown_port(port->tty, bp, rp); + spin_unlock_irqrestore(&riscom_lock, flags); +} + +static void rc_close(struct tty_struct *tty, struct file *filp) +{ + struct riscom_port *port = tty->driver_data; + + if (!port || rc_paranoia_check(port, tty->name, "close")) + return; + tty_port_close(&port->port, tty, filp); +} + +static int rc_write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + struct riscom_port *port = tty->driver_data; + struct riscom_board *bp; + int c, total = 0; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_write")) + return 0; + + bp = port_Board(port); + + while (1) { + spin_lock_irqsave(&riscom_lock, flags); + + c = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, + SERIAL_XMIT_SIZE - port->xmit_head)); + if (c <= 0) + break; /* lock continues to be held */ + + memcpy(port->port.xmit_buf + port->xmit_head, buf, c); + port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1); + port->xmit_cnt += c; + + spin_unlock_irqrestore(&riscom_lock, flags); + + buf += c; + count -= c; + total += c; + } + + if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped && + !(port->IER & IER_TXRDY)) { + port->IER |= IER_TXRDY; + rc_out(bp, CD180_CAR, port_No(port)); + rc_out(bp, CD180_IER, port->IER); + } + + spin_unlock_irqrestore(&riscom_lock, flags); + + return total; +} + +static int rc_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct riscom_port *port = tty->driver_data; + unsigned long flags; + int ret = 0; + + if (rc_paranoia_check(port, tty->name, "rc_put_char")) + return 0; + + spin_lock_irqsave(&riscom_lock, flags); + + if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) + goto out; + + port->port.xmit_buf[port->xmit_head++] = ch; + port->xmit_head &= SERIAL_XMIT_SIZE - 1; + port->xmit_cnt++; + ret = 1; + +out: + spin_unlock_irqrestore(&riscom_lock, flags); + return ret; +} + +static void rc_flush_chars(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_flush_chars")) + return; + + if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped) + return; + + spin_lock_irqsave(&riscom_lock, flags); + + port->IER |= IER_TXRDY; + rc_out(port_Board(port), CD180_CAR, port_No(port)); + rc_out(port_Board(port), CD180_IER, port->IER); + + spin_unlock_irqrestore(&riscom_lock, flags); +} + +static int rc_write_room(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + int ret; + + if (rc_paranoia_check(port, tty->name, "rc_write_room")) + return 0; + + ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; + if (ret < 0) + ret = 0; + return ret; +} + +static int rc_chars_in_buffer(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + + if (rc_paranoia_check(port, tty->name, "rc_chars_in_buffer")) + return 0; + + return port->xmit_cnt; +} + +static int rc_tiocmget(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + struct riscom_board *bp; + unsigned char status; + unsigned int result; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, __func__)) + return -ENODEV; + + bp = port_Board(port); + + spin_lock_irqsave(&riscom_lock, flags); + + rc_out(bp, CD180_CAR, port_No(port)); + status = rc_in(bp, CD180_MSVR); + result = rc_in(bp, RC_RI) & (1u << port_No(port)) ? 0 : TIOCM_RNG; + + spin_unlock_irqrestore(&riscom_lock, flags); + + result |= ((status & MSVR_RTS) ? TIOCM_RTS : 0) + | ((status & MSVR_DTR) ? TIOCM_DTR : 0) + | ((status & MSVR_CD) ? TIOCM_CAR : 0) + | ((status & MSVR_DSR) ? TIOCM_DSR : 0) + | ((status & MSVR_CTS) ? TIOCM_CTS : 0); + return result; +} + +static int rc_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct riscom_port *port = tty->driver_data; + unsigned long flags; + struct riscom_board *bp; + + if (rc_paranoia_check(port, tty->name, __func__)) + return -ENODEV; + + bp = port_Board(port); + + spin_lock_irqsave(&riscom_lock, flags); + + if (set & TIOCM_RTS) + port->MSVR |= MSVR_RTS; + if (set & TIOCM_DTR) + bp->DTR &= ~(1u << port_No(port)); + + if (clear & TIOCM_RTS) + port->MSVR &= ~MSVR_RTS; + if (clear & TIOCM_DTR) + bp->DTR |= (1u << port_No(port)); + + rc_out(bp, CD180_CAR, port_No(port)); + rc_out(bp, CD180_MSVR, port->MSVR); + rc_out(bp, RC_DTR, bp->DTR); + + spin_unlock_irqrestore(&riscom_lock, flags); + + return 0; +} + +static int rc_send_break(struct tty_struct *tty, int length) +{ + struct riscom_port *port = tty->driver_data; + struct riscom_board *bp = port_Board(port); + unsigned long flags; + + if (length == 0 || length == -1) + return -EOPNOTSUPP; + + spin_lock_irqsave(&riscom_lock, flags); + + port->break_length = RISCOM_TPS / HZ * length; + port->COR2 |= COR2_ETC; + port->IER |= IER_TXRDY; + rc_out(bp, CD180_CAR, port_No(port)); + rc_out(bp, CD180_COR2, port->COR2); + rc_out(bp, CD180_IER, port->IER); + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_CORCHG2); + rc_wait_CCR(bp); + + spin_unlock_irqrestore(&riscom_lock, flags); + return 0; +} + +static int rc_set_serial_info(struct tty_struct *tty, struct riscom_port *port, + struct serial_struct __user *newinfo) +{ + struct serial_struct tmp; + struct riscom_board *bp = port_Board(port); + int change_speed; + + if (copy_from_user(&tmp, newinfo, sizeof(tmp))) + return -EFAULT; + + mutex_lock(&port->port.mutex); + change_speed = ((port->port.flags & ASYNC_SPD_MASK) != + (tmp.flags & ASYNC_SPD_MASK)); + + if (!capable(CAP_SYS_ADMIN)) { + if ((tmp.close_delay != port->port.close_delay) || + (tmp.closing_wait != port->port.closing_wait) || + ((tmp.flags & ~ASYNC_USR_MASK) != + (port->port.flags & ~ASYNC_USR_MASK))) { + mutex_unlock(&port->port.mutex); + return -EPERM; + } + port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | + (tmp.flags & ASYNC_USR_MASK)); + } else { + port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | + (tmp.flags & ASYNC_FLAGS)); + port->port.close_delay = tmp.close_delay; + port->port.closing_wait = tmp.closing_wait; + } + if (change_speed) { + unsigned long flags; + + spin_lock_irqsave(&riscom_lock, flags); + rc_change_speed(tty, bp, port); + spin_unlock_irqrestore(&riscom_lock, flags); + } + mutex_unlock(&port->port.mutex); + return 0; +} + +static int rc_get_serial_info(struct riscom_port *port, + struct serial_struct __user *retinfo) +{ + struct serial_struct tmp; + struct riscom_board *bp = port_Board(port); + + memset(&tmp, 0, sizeof(tmp)); + tmp.type = PORT_CIRRUS; + tmp.line = port - rc_port; + + mutex_lock(&port->port.mutex); + tmp.port = bp->base; + tmp.irq = bp->irq; + tmp.flags = port->port.flags; + tmp.baud_base = (RC_OSCFREQ + CD180_TPC/2) / CD180_TPC; + tmp.close_delay = port->port.close_delay * HZ/100; + tmp.closing_wait = port->port.closing_wait * HZ/100; + mutex_unlock(&port->port.mutex); + tmp.xmit_fifo_size = CD180_NFIFO; + return copy_to_user(retinfo, &tmp, sizeof(tmp)) ? -EFAULT : 0; +} + +static int rc_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct riscom_port *port = tty->driver_data; + void __user *argp = (void __user *)arg; + int retval; + + if (rc_paranoia_check(port, tty->name, "rc_ioctl")) + return -ENODEV; + + switch (cmd) { + case TIOCGSERIAL: + retval = rc_get_serial_info(port, argp); + break; + case TIOCSSERIAL: + retval = rc_set_serial_info(tty, port, argp); + break; + default: + retval = -ENOIOCTLCMD; + } + return retval; +} + +static void rc_throttle(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + struct riscom_board *bp; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_throttle")) + return; + bp = port_Board(port); + + spin_lock_irqsave(&riscom_lock, flags); + port->MSVR &= ~MSVR_RTS; + rc_out(bp, CD180_CAR, port_No(port)); + if (I_IXOFF(tty)) { + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_SSCH2); + rc_wait_CCR(bp); + } + rc_out(bp, CD180_MSVR, port->MSVR); + spin_unlock_irqrestore(&riscom_lock, flags); +} + +static void rc_unthrottle(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + struct riscom_board *bp; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_unthrottle")) + return; + bp = port_Board(port); + + spin_lock_irqsave(&riscom_lock, flags); + port->MSVR |= MSVR_RTS; + rc_out(bp, CD180_CAR, port_No(port)); + if (I_IXOFF(tty)) { + rc_wait_CCR(bp); + rc_out(bp, CD180_CCR, CCR_SSCH1); + rc_wait_CCR(bp); + } + rc_out(bp, CD180_MSVR, port->MSVR); + spin_unlock_irqrestore(&riscom_lock, flags); +} + +static void rc_stop(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + struct riscom_board *bp; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_stop")) + return; + + bp = port_Board(port); + + spin_lock_irqsave(&riscom_lock, flags); + port->IER &= ~IER_TXRDY; + rc_out(bp, CD180_CAR, port_No(port)); + rc_out(bp, CD180_IER, port->IER); + spin_unlock_irqrestore(&riscom_lock, flags); +} + +static void rc_start(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + struct riscom_board *bp; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_start")) + return; + + bp = port_Board(port); + + spin_lock_irqsave(&riscom_lock, flags); + + if (port->xmit_cnt && port->port.xmit_buf && !(port->IER & IER_TXRDY)) { + port->IER |= IER_TXRDY; + rc_out(bp, CD180_CAR, port_No(port)); + rc_out(bp, CD180_IER, port->IER); + } + spin_unlock_irqrestore(&riscom_lock, flags); +} + +static void rc_hangup(struct tty_struct *tty) +{ + struct riscom_port *port = tty->driver_data; + + if (rc_paranoia_check(port, tty->name, "rc_hangup")) + return; + + tty_port_hangup(&port->port); +} + +static void rc_set_termios(struct tty_struct *tty, + struct ktermios *old_termios) +{ + struct riscom_port *port = tty->driver_data; + unsigned long flags; + + if (rc_paranoia_check(port, tty->name, "rc_set_termios")) + return; + + spin_lock_irqsave(&riscom_lock, flags); + rc_change_speed(tty, port_Board(port), port); + spin_unlock_irqrestore(&riscom_lock, flags); + + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + rc_start(tty); + } +} + +static const struct tty_operations riscom_ops = { + .open = rc_open, + .close = rc_close, + .write = rc_write, + .put_char = rc_put_char, + .flush_chars = rc_flush_chars, + .write_room = rc_write_room, + .chars_in_buffer = rc_chars_in_buffer, + .flush_buffer = rc_flush_buffer, + .ioctl = rc_ioctl, + .throttle = rc_throttle, + .unthrottle = rc_unthrottle, + .set_termios = rc_set_termios, + .stop = rc_stop, + .start = rc_start, + .hangup = rc_hangup, + .tiocmget = rc_tiocmget, + .tiocmset = rc_tiocmset, + .break_ctl = rc_send_break, +}; + +static const struct tty_port_operations riscom_port_ops = { + .carrier_raised = carrier_raised, + .dtr_rts = dtr_rts, + .shutdown = rc_close_port, + .activate = rc_activate_port, +}; + + +static int __init rc_init_drivers(void) +{ + int error; + int i; + + riscom_driver = alloc_tty_driver(RC_NBOARD * RC_NPORT); + if (!riscom_driver) + return -ENOMEM; + + riscom_driver->owner = THIS_MODULE; + riscom_driver->name = "ttyL"; + riscom_driver->major = RISCOM8_NORMAL_MAJOR; + riscom_driver->type = TTY_DRIVER_TYPE_SERIAL; + riscom_driver->subtype = SERIAL_TYPE_NORMAL; + riscom_driver->init_termios = tty_std_termios; + riscom_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + riscom_driver->init_termios.c_ispeed = 9600; + riscom_driver->init_termios.c_ospeed = 9600; + riscom_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_HARDWARE_BREAK; + tty_set_operations(riscom_driver, &riscom_ops); + error = tty_register_driver(riscom_driver); + if (error != 0) { + put_tty_driver(riscom_driver); + printk(KERN_ERR "rc: Couldn't register RISCom/8 driver, " + "error = %d\n", error); + return 1; + } + memset(rc_port, 0, sizeof(rc_port)); + for (i = 0; i < RC_NPORT * RC_NBOARD; i++) { + tty_port_init(&rc_port[i].port); + rc_port[i].port.ops = &riscom_port_ops; + rc_port[i].magic = RISCOM8_MAGIC; + } + return 0; +} + +static void rc_release_drivers(void) +{ + tty_unregister_driver(riscom_driver); + put_tty_driver(riscom_driver); +} + +#ifndef MODULE +/* + * Called at boot time. + * + * You can specify IO base for up to RC_NBOARD cards, + * using line "riscom8=0xiobase1,0xiobase2,.." at LILO prompt. + * Note that there will be no probing at default + * addresses in this case. + * + */ +static int __init riscom8_setup(char *str) +{ + int ints[RC_NBOARD]; + int i; + + str = get_options(str, ARRAY_SIZE(ints), ints); + + for (i = 0; i < RC_NBOARD; i++) { + if (i < ints[0]) + rc_board[i].base = ints[i+1]; + else + rc_board[i].base = 0; + } + return 1; +} + +__setup("riscom8=", riscom8_setup); +#endif + +static char banner[] __initdata = + KERN_INFO "rc: SDL RISCom/8 card driver v1.1, (c) D.Gorodchanin " + "1994-1996.\n"; +static char no_boards_msg[] __initdata = + KERN_INFO "rc: No RISCom/8 boards detected.\n"; + +/* + * This routine must be called by kernel at boot time + */ +static int __init riscom8_init(void) +{ + int i; + int found = 0; + + printk(banner); + + if (rc_init_drivers()) + return -EIO; + + for (i = 0; i < RC_NBOARD; i++) + if (rc_board[i].base && !rc_probe(&rc_board[i])) + found++; + if (!found) { + rc_release_drivers(); + printk(no_boards_msg); + return -EIO; + } + return 0; +} + +#ifdef MODULE +static int iobase; +static int iobase1; +static int iobase2; +static int iobase3; +module_param(iobase, int, 0); +module_param(iobase1, int, 0); +module_param(iobase2, int, 0); +module_param(iobase3, int, 0); + +MODULE_LICENSE("GPL"); +MODULE_ALIAS_CHARDEV_MAJOR(RISCOM8_NORMAL_MAJOR); +#endif /* MODULE */ + +/* + * You can setup up to 4 boards (current value of RC_NBOARD) + * by specifying "iobase=0xXXX iobase1=0xXXX ..." as insmod parameter. + * + */ +static int __init riscom8_init_module(void) +{ +#ifdef MODULE + int i; + + if (iobase || iobase1 || iobase2 || iobase3) { + for (i = 0; i < RC_NBOARD; i++) + rc_board[i].base = 0; + } + + if (iobase) + rc_board[0].base = iobase; + if (iobase1) + rc_board[1].base = iobase1; + if (iobase2) + rc_board[2].base = iobase2; + if (iobase3) + rc_board[3].base = iobase3; +#endif /* MODULE */ + + return riscom8_init(); +} + +static void __exit riscom8_exit_module(void) +{ + int i; + + rc_release_drivers(); + for (i = 0; i < RC_NBOARD; i++) + if (rc_board[i].flags & RC_BOARD_PRESENT) + rc_release_io_range(&rc_board[i]); + +} + +module_init(riscom8_init_module); +module_exit(riscom8_exit_module); diff --git a/drivers/staging/tty/riscom8.h b/drivers/staging/tty/riscom8.h new file mode 100644 index 000000000000..c9876b3f9714 --- /dev/null +++ b/drivers/staging/tty/riscom8.h @@ -0,0 +1,91 @@ +/* + * linux/drivers/char/riscom8.h -- RISCom/8 multiport serial driver. + * + * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) + * + * This code is loosely based on the Linux serial driver, written by + * Linus Torvalds, Theodore T'so and others. The RISCom/8 card + * programming info was obtained from various drivers for other OSes + * (FreeBSD, ISC, etc), but no source code from those drivers were + * directly included in this driver. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __LINUX_RISCOM8_H +#define __LINUX_RISCOM8_H + +#include + +#ifdef __KERNEL__ + +#define RC_NBOARD 4 +/* NOTE: RISCom decoder recognizes 16 addresses... */ +#define RC_NPORT 8 +#define RC_BOARD(line) (((line) >> 3) & 0x07) +#define RC_PORT(line) ((line) & (RC_NPORT - 1)) + +/* Ticks per sec. Used for setting receiver timeout and break length */ +#define RISCOM_TPS 4000 + +/* Yeah, after heavy testing I decided it must be 6. + * Sure, You can change it if needed. + */ +#define RISCOM_RXFIFO 6 /* Max. receiver FIFO size (1-8) */ + +#define RISCOM8_MAGIC 0x0907 + +#define RC_IOBASE1 0x220 +#define RC_IOBASE2 0x240 +#define RC_IOBASE3 0x250 +#define RC_IOBASE4 0x260 + +struct riscom_board { + unsigned long flags; + unsigned short base; + unsigned char irq; + signed char count; + unsigned char DTR; +}; + +#define RC_BOARD_PRESENT 0x00000001 +#define RC_BOARD_ACTIVE 0x00000002 + +struct riscom_port { + int magic; + struct tty_port port; + int baud_base; + int timeout; + int custom_divisor; + int xmit_head; + int xmit_tail; + int xmit_cnt; + short wakeup_chars; + short break_length; + unsigned char mark_mask; + unsigned char IER; + unsigned char MSVR; + unsigned char COR2; +#ifdef RC_REPORT_OVERRUN + unsigned long overrun; +#endif +#ifdef RC_REPORT_FIFO + unsigned long hits[10]; +#endif +}; + +#endif /* __KERNEL__ */ +#endif /* __LINUX_RISCOM8_H */ diff --git a/drivers/staging/tty/riscom8_reg.h b/drivers/staging/tty/riscom8_reg.h new file mode 100644 index 000000000000..a32475ed0d18 --- /dev/null +++ b/drivers/staging/tty/riscom8_reg.h @@ -0,0 +1,254 @@ +/* + * linux/drivers/char/riscom8_reg.h -- RISCom/8 multiport serial driver. + */ + +/* + * Definitions for RISCom/8 Async Mux card by SDL Communications, Inc. + */ + +/* + * Address mapping between Cirrus Logic CD180 chip internal registers + * and ISA port addresses: + * + * CL-CD180 A6 A5 A4 A3 A2 A1 A0 + * ISA A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 + */ +#define RC_TO_ISA(r) ((((r)&0x07)<<1) | (((r)&~0x07)<<7)) + + +/* RISCom/8 On-Board Registers (assuming address translation) */ + +#define RC_RI 0x100 /* Ring Indicator Register (R/O) */ +#define RC_DTR 0x100 /* DTR Register (W/O) */ +#define RC_BSR 0x101 /* Board Status Register (R/O) */ +#define RC_CTOUT 0x101 /* Clear Timeout (W/O) */ + + +/* Board Status Register */ + +#define RC_BSR_TOUT 0x08 /* Hardware Timeout */ +#define RC_BSR_RINT 0x04 /* Receiver Interrupt */ +#define RC_BSR_TINT 0x02 /* Transmitter Interrupt */ +#define RC_BSR_MINT 0x01 /* Modem Ctl Interrupt */ + + +/* On-board oscillator frequency (in Hz) */ +#define RC_OSCFREQ 9830400 + +/* Values of choice for Interrupt ACKs */ +#define RC_ACK_MINT 0x81 /* goes to PILR1 */ +#define RC_ACK_RINT 0x82 /* goes to PILR3 */ +#define RC_ACK_TINT 0x84 /* goes to PILR2 */ + +/* Chip ID (sorry, only one chip now) */ +#define RC_ID 0x10 + +/* Definitions for Cirrus Logic CL-CD180 8-port async mux chip */ + +#define CD180_NCH 8 /* Total number of channels */ +#define CD180_TPC 16 /* Ticks per character */ +#define CD180_NFIFO 8 /* TX FIFO size */ + + +/* Global registers */ + +#define CD180_GIVR 0x40 /* Global Interrupt Vector Register */ +#define CD180_GICR 0x41 /* Global Interrupting Channel Register */ +#define CD180_PILR1 0x61 /* Priority Interrupt Level Register 1 */ +#define CD180_PILR2 0x62 /* Priority Interrupt Level Register 2 */ +#define CD180_PILR3 0x63 /* Priority Interrupt Level Register 3 */ +#define CD180_CAR 0x64 /* Channel Access Register */ +#define CD180_GFRCR 0x6b /* Global Firmware Revision Code Register */ +#define CD180_PPRH 0x70 /* Prescaler Period Register High */ +#define CD180_PPRL 0x71 /* Prescaler Period Register Low */ +#define CD180_RDR 0x78 /* Receiver Data Register */ +#define CD180_RCSR 0x7a /* Receiver Character Status Register */ +#define CD180_TDR 0x7b /* Transmit Data Register */ +#define CD180_EOIR 0x7f /* End of Interrupt Register */ + + +/* Channel Registers */ + +#define CD180_CCR 0x01 /* Channel Command Register */ +#define CD180_IER 0x02 /* Interrupt Enable Register */ +#define CD180_COR1 0x03 /* Channel Option Register 1 */ +#define CD180_COR2 0x04 /* Channel Option Register 2 */ +#define CD180_COR3 0x05 /* Channel Option Register 3 */ +#define CD180_CCSR 0x06 /* Channel Control Status Register */ +#define CD180_RDCR 0x07 /* Receive Data Count Register */ +#define CD180_SCHR1 0x09 /* Special Character Register 1 */ +#define CD180_SCHR2 0x0a /* Special Character Register 2 */ +#define CD180_SCHR3 0x0b /* Special Character Register 3 */ +#define CD180_SCHR4 0x0c /* Special Character Register 4 */ +#define CD180_MCOR1 0x10 /* Modem Change Option 1 Register */ +#define CD180_MCOR2 0x11 /* Modem Change Option 2 Register */ +#define CD180_MCR 0x12 /* Modem Change Register */ +#define CD180_RTPR 0x18 /* Receive Timeout Period Register */ +#define CD180_MSVR 0x28 /* Modem Signal Value Register */ +#define CD180_RBPRH 0x31 /* Receive Baud Rate Period Register High */ +#define CD180_RBPRL 0x32 /* Receive Baud Rate Period Register Low */ +#define CD180_TBPRH 0x39 /* Transmit Baud Rate Period Register High */ +#define CD180_TBPRL 0x3a /* Transmit Baud Rate Period Register Low */ + + +/* Global Interrupt Vector Register (R/W) */ + +#define GIVR_ITMASK 0x07 /* Interrupt type mask */ +#define GIVR_IT_MODEM 0x01 /* Modem Signal Change Interrupt */ +#define GIVR_IT_TX 0x02 /* Transmit Data Interrupt */ +#define GIVR_IT_RCV 0x03 /* Receive Good Data Interrupt */ +#define GIVR_IT_REXC 0x07 /* Receive Exception Interrupt */ + + +/* Global Interrupt Channel Register (R/W) */ + +#define GICR_CHAN 0x1c /* Channel Number Mask */ +#define GICR_CHAN_OFF 2 /* Channel Number Offset */ + + +/* Channel Address Register (R/W) */ + +#define CAR_CHAN 0x07 /* Channel Number Mask */ +#define CAR_A7 0x08 /* A7 Address Extension (unused) */ + + +/* Receive Character Status Register (R/O) */ + +#define RCSR_TOUT 0x80 /* Rx Timeout */ +#define RCSR_SCDET 0x70 /* Special Character Detected Mask */ +#define RCSR_NO_SC 0x00 /* No Special Characters Detected */ +#define RCSR_SC_1 0x10 /* Special Char 1 (or 1 & 3) Detected */ +#define RCSR_SC_2 0x20 /* Special Char 2 (or 2 & 4) Detected */ +#define RCSR_SC_3 0x30 /* Special Char 3 Detected */ +#define RCSR_SC_4 0x40 /* Special Char 4 Detected */ +#define RCSR_BREAK 0x08 /* Break has been detected */ +#define RCSR_PE 0x04 /* Parity Error */ +#define RCSR_FE 0x02 /* Frame Error */ +#define RCSR_OE 0x01 /* Overrun Error */ + + +/* Channel Command Register (R/W) (commands in groups can be OR-ed) */ + +#define CCR_HARDRESET 0x81 /* Reset the chip */ + +#define CCR_SOFTRESET 0x80 /* Soft Channel Reset */ + +#define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */ +#define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */ +#define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */ + +#define CCR_SSCH1 0x21 /* Send Special Character 1 */ + +#define CCR_SSCH2 0x22 /* Send Special Character 2 */ + +#define CCR_SSCH3 0x23 /* Send Special Character 3 */ + +#define CCR_SSCH4 0x24 /* Send Special Character 4 */ + +#define CCR_TXEN 0x18 /* Enable Transmitter */ +#define CCR_RXEN 0x12 /* Enable Receiver */ + +#define CCR_TXDIS 0x14 /* Disable Transmitter */ +#define CCR_RXDIS 0x11 /* Disable Receiver */ + + +/* Interrupt Enable Register (R/W) */ + +#define IER_DSR 0x80 /* Enable interrupt on DSR change */ +#define IER_CD 0x40 /* Enable interrupt on CD change */ +#define IER_CTS 0x20 /* Enable interrupt on CTS change */ +#define IER_RXD 0x10 /* Enable interrupt on Receive Data */ +#define IER_RXSC 0x08 /* Enable interrupt on Receive Spec. Char */ +#define IER_TXRDY 0x04 /* Enable interrupt on TX FIFO empty */ +#define IER_TXEMPTY 0x02 /* Enable interrupt on TX completely empty */ +#define IER_RET 0x01 /* Enable interrupt on RX Exc. Timeout */ + + +/* Channel Option Register 1 (R/W) */ + +#define COR1_ODDP 0x80 /* Odd Parity */ +#define COR1_PARMODE 0x60 /* Parity Mode mask */ +#define COR1_NOPAR 0x00 /* No Parity */ +#define COR1_FORCEPAR 0x20 /* Force Parity */ +#define COR1_NORMPAR 0x40 /* Normal Parity */ +#define COR1_IGNORE 0x10 /* Ignore Parity on RX */ +#define COR1_STOPBITS 0x0c /* Number of Stop Bits */ +#define COR1_1SB 0x00 /* 1 Stop Bit */ +#define COR1_15SB 0x04 /* 1.5 Stop Bits */ +#define COR1_2SB 0x08 /* 2 Stop Bits */ +#define COR1_CHARLEN 0x03 /* Character Length */ +#define COR1_5BITS 0x00 /* 5 bits */ +#define COR1_6BITS 0x01 /* 6 bits */ +#define COR1_7BITS 0x02 /* 7 bits */ +#define COR1_8BITS 0x03 /* 8 bits */ + + +/* Channel Option Register 2 (R/W) */ + +#define COR2_IXM 0x80 /* Implied XON mode */ +#define COR2_TXIBE 0x40 /* Enable In-Band (XON/XOFF) Flow Control */ +#define COR2_ETC 0x20 /* Embedded Tx Commands Enable */ +#define COR2_LLM 0x10 /* Local Loopback Mode */ +#define COR2_RLM 0x08 /* Remote Loopback Mode */ +#define COR2_RTSAO 0x04 /* RTS Automatic Output Enable */ +#define COR2_CTSAE 0x02 /* CTS Automatic Enable */ +#define COR2_DSRAE 0x01 /* DSR Automatic Enable */ + + +/* Channel Option Register 3 (R/W) */ + +#define COR3_XONCH 0x80 /* XON is a pair of characters (1 & 3) */ +#define COR3_XOFFCH 0x40 /* XOFF is a pair of characters (2 & 4) */ +#define COR3_FCT 0x20 /* Flow-Control Transparency Mode */ +#define COR3_SCDE 0x10 /* Special Character Detection Enable */ +#define COR3_RXTH 0x0f /* RX FIFO Threshold value (1-8) */ + + +/* Channel Control Status Register (R/O) */ + +#define CCSR_RXEN 0x80 /* Receiver Enabled */ +#define CCSR_RXFLOFF 0x40 /* Receive Flow Off (XOFF was sent) */ +#define CCSR_RXFLON 0x20 /* Receive Flow On (XON was sent) */ +#define CCSR_TXEN 0x08 /* Transmitter Enabled */ +#define CCSR_TXFLOFF 0x04 /* Transmit Flow Off (got XOFF) */ +#define CCSR_TXFLON 0x02 /* Transmit Flow On (got XON) */ + + +/* Modem Change Option Register 1 (R/W) */ + +#define MCOR1_DSRZD 0x80 /* Detect 0->1 transition of DSR */ +#define MCOR1_CDZD 0x40 /* Detect 0->1 transition of CD */ +#define MCOR1_CTSZD 0x20 /* Detect 0->1 transition of CTS */ +#define MCOR1_DTRTH 0x0f /* Auto DTR flow control Threshold (1-8) */ +#define MCOR1_NODTRFC 0x0 /* Automatic DTR flow control disabled */ + + +/* Modem Change Option Register 2 (R/W) */ + +#define MCOR2_DSROD 0x80 /* Detect 1->0 transition of DSR */ +#define MCOR2_CDOD 0x40 /* Detect 1->0 transition of CD */ +#define MCOR2_CTSOD 0x20 /* Detect 1->0 transition of CTS */ + + +/* Modem Change Register (R/W) */ + +#define MCR_DSRCHG 0x80 /* DSR Changed */ +#define MCR_CDCHG 0x40 /* CD Changed */ +#define MCR_CTSCHG 0x20 /* CTS Changed */ + + +/* Modem Signal Value Register (R/W) */ + +#define MSVR_DSR 0x80 /* Current state of DSR input */ +#define MSVR_CD 0x40 /* Current state of CD input */ +#define MSVR_CTS 0x20 /* Current state of CTS input */ +#define MSVR_DTR 0x02 /* Current state of DTR output */ +#define MSVR_RTS 0x01 /* Current state of RTS output */ + + +/* Escape characters */ + +#define CD180_C_ESC 0x00 /* Escape character */ +#define CD180_C_SBRK 0x81 /* Start sending BREAK */ +#define CD180_C_DELAY 0x82 /* Delay output */ +#define CD180_C_EBRK 0x83 /* Stop sending BREAK */ diff --git a/drivers/staging/tty/serial167.c b/drivers/staging/tty/serial167.c new file mode 100644 index 000000000000..674af6933978 --- /dev/null +++ b/drivers/staging/tty/serial167.c @@ -0,0 +1,2489 @@ +/* + * linux/drivers/char/serial167.c + * + * Driver for MVME166/7 board serial ports, which are via a CD2401. + * Based very much on cyclades.c. + * + * MVME166/7 work by Richard Hirst [richard@sleepie.demon.co.uk] + * + * ============================================================== + * + * static char rcsid[] = + * "$Revision: 1.36.1.4 $$Date: 1995/03/29 06:14:14 $"; + * + * linux/kernel/cyclades.c + * + * Maintained by Marcio Saito (cyclades@netcom.com) and + * Randolph Bentson (bentson@grieg.seaslug.org) + * + * Much of the design and some of the code came from serial.c + * which was copyright (C) 1991, 1992 Linus Torvalds. It was + * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, + * and then fixed as suggested by Michael K. Johnson 12/12/92. + * + * This version does not support shared irq's. + * + * $Log: cyclades.c,v $ + * Revision 1.36.1.4 1995/03/29 06:14:14 bentson + * disambiguate between Cyclom-16Y and Cyclom-32Ye; + * + * Changes: + * + * 200 lines of changes record removed - RGH 11-10-95, starting work on + * converting this to drive serial ports on mvme166 (cd2401). + * + * Arnaldo Carvalho de Melo - 2000/08/25 + * - get rid of verify_area + * - use get_user to access memory from userspace in set_threshold, + * set_default_threshold and set_timeout + * - don't use the panic function in serial167_init + * - do resource release on failure on serial167_init + * - include missing restore_flags in mvme167_serial_console_setup + * + * Kars de Jong - 2004/09/06 + * - replace bottom half handler with task queue handler + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + +#define SERIAL_PARANOIA_CHECK +#undef SERIAL_DEBUG_OPEN +#undef SERIAL_DEBUG_THROTTLE +#undef SERIAL_DEBUG_OTHER +#undef SERIAL_DEBUG_IO +#undef SERIAL_DEBUG_COUNT +#undef SERIAL_DEBUG_DTR +#undef CYCLOM_16Y_HACK +#define CYCLOM_ENABLE_MONITORING + +#define WAKEUP_CHARS 256 + +#define STD_COM_FLAGS (0) + +static struct tty_driver *cy_serial_driver; +extern int serial_console; +static struct cyclades_port *serial_console_info = NULL; +static unsigned int serial_console_cflag = 0; +u_char initial_console_speed; + +/* Base address of cd2401 chip on mvme166/7 */ + +#define BASE_ADDR (0xfff45000) +#define pcc2chip ((volatile u_char *)0xfff42000) +#define PccSCCMICR 0x1d +#define PccSCCTICR 0x1e +#define PccSCCRICR 0x1f +#define PccTPIACKR 0x25 +#define PccRPIACKR 0x27 +#define PccIMLR 0x3f + +/* This is the per-port data structure */ +struct cyclades_port cy_port[] = { + /* CARD# */ + {-1}, /* ttyS0 */ + {-1}, /* ttyS1 */ + {-1}, /* ttyS2 */ + {-1}, /* ttyS3 */ +}; + +#define NR_PORTS ARRAY_SIZE(cy_port) + +/* + * This is used to look up the divisor speeds and the timeouts + * We're normally limited to 15 distinct baud rates. The extra + * are accessed via settings in info->flags. + * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, + * HI VHI + */ +static int baud_table[] = { + 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, + 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, + 0 +}; + +#if 0 +static char baud_co[] = { /* 25 MHz clock option table */ + /* value => 00 01 02 03 04 */ + /* divide by 8 32 128 512 2048 */ + 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, + 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +static char baud_bpr[] = { /* 25 MHz baud rate period table */ + 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, + 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 +}; +#endif + +/* I think 166 brd clocks 2401 at 20MHz.... */ + +/* These values are written directly to tcor, and >> 5 for writing to rcor */ +static u_char baud_co[] = { /* 20 MHz clock option table */ + 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x60, 0x60, 0x40, + 0x40, 0x40, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +/* These values written directly to tbpr/rbpr */ +static u_char baud_bpr[] = { /* 20 MHz baud rate period table */ + 0x00, 0xc0, 0x80, 0x58, 0x6c, 0x40, 0xc0, 0x81, 0x40, 0x81, + 0x57, 0x40, 0x81, 0x40, 0x81, 0x40, 0x2b, 0x20, 0x15, 0x10 +}; + +static u_char baud_cor4[] = { /* receive threshold */ + 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, + 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07 +}; + +static void shutdown(struct cyclades_port *); +static int startup(struct cyclades_port *); +static void cy_throttle(struct tty_struct *); +static void cy_unthrottle(struct tty_struct *); +static void config_setup(struct cyclades_port *); +#ifdef CYCLOM_SHOW_STATUS +static void show_status(int); +#endif + +/* + * I have my own version of udelay(), as it is needed when initialising + * the chip, before the delay loop has been calibrated. Should probably + * reference one of the vmechip2 or pccchip2 counter for an accurate + * delay, but this wild guess will do for now. + */ + +void my_udelay(long us) +{ + u_char x; + volatile u_char *p = &x; + int i; + + while (us--) + for (i = 100; i; i--) + x |= *p; +} + +static inline int serial_paranoia_check(struct cyclades_port *info, char *name, + const char *routine) +{ +#ifdef SERIAL_PARANOIA_CHECK + if (!info) { + printk("Warning: null cyclades_port for (%s) in %s\n", name, + routine); + return 1; + } + + if (info < &cy_port[0] || info >= &cy_port[NR_PORTS]) { + printk("Warning: cyclades_port out of range for (%s) in %s\n", + name, routine); + return 1; + } + + if (info->magic != CYCLADES_MAGIC) { + printk("Warning: bad magic number for serial struct (%s) in " + "%s\n", name, routine); + return 1; + } +#endif + return 0; +} /* serial_paranoia_check */ + +#if 0 +/* The following diagnostic routines allow the driver to spew + information on the screen, even (especially!) during interrupts. + */ +void SP(char *data) +{ + unsigned long flags; + local_irq_save(flags); + printk(KERN_EMERG "%s", data); + local_irq_restore(flags); +} + +char scrn[2]; +void CP(char data) +{ + unsigned long flags; + local_irq_save(flags); + scrn[0] = data; + printk(KERN_EMERG "%c", scrn); + local_irq_restore(flags); +} /* CP */ + +void CP1(int data) +{ + (data < 10) ? CP(data + '0') : CP(data + 'A' - 10); +} /* CP1 */ +void CP2(int data) +{ + CP1((data >> 4) & 0x0f); + CP1(data & 0x0f); +} /* CP2 */ +void CP4(int data) +{ + CP2((data >> 8) & 0xff); + CP2(data & 0xff); +} /* CP4 */ +void CP8(long data) +{ + CP4((data >> 16) & 0xffff); + CP4(data & 0xffff); +} /* CP8 */ +#endif + +/* This routine waits up to 1000 micro-seconds for the previous + command to the Cirrus chip to complete and then issues the + new command. An error is returned if the previous command + didn't finish within the time limit. + */ +u_short write_cy_cmd(volatile u_char * base_addr, u_char cmd) +{ + unsigned long flags; + volatile int i; + + local_irq_save(flags); + /* Check to see that the previous command has completed */ + for (i = 0; i < 100; i++) { + if (base_addr[CyCCR] == 0) { + break; + } + my_udelay(10L); + } + /* if the CCR never cleared, the previous command + didn't finish within the "reasonable time" */ + if (i == 10) { + local_irq_restore(flags); + return (-1); + } + + /* Issue the new command */ + base_addr[CyCCR] = cmd; + local_irq_restore(flags); + return (0); +} /* write_cy_cmd */ + +/* cy_start and cy_stop provide software output flow control as a + function of XON/XOFF, software CTS, and other such stuff. */ + +static void cy_stop(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; + int channel; + unsigned long flags; + +#ifdef SERIAL_DEBUG_OTHER + printk("cy_stop %s\n", tty->name); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_stop")) + return; + + channel = info->line; + + local_irq_save(flags); + base_addr[CyCAR] = (u_char) (channel); /* index channel */ + base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); + local_irq_restore(flags); +} /* cy_stop */ + +static void cy_start(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; + int channel; + unsigned long flags; + +#ifdef SERIAL_DEBUG_OTHER + printk("cy_start %s\n", tty->name); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_start")) + return; + + channel = info->line; + + local_irq_save(flags); + base_addr[CyCAR] = (u_char) (channel); + base_addr[CyIER] |= CyTxMpty; + local_irq_restore(flags); +} /* cy_start */ + +/* The real interrupt service routines are called + whenever the card wants its hand held--chars + received, out buffer empty, modem change, etc. + */ +static irqreturn_t cd2401_rxerr_interrupt(int irq, void *dev_id) +{ + struct tty_struct *tty; + struct cyclades_port *info; + volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; + unsigned char err, rfoc; + int channel; + char data; + + /* determine the channel and change to that context */ + channel = (u_short) (base_addr[CyLICR] >> 2); + info = &cy_port[channel]; + info->last_active = jiffies; + + if ((err = base_addr[CyRISR]) & CyTIMEOUT) { + /* This is a receive timeout interrupt, ignore it */ + base_addr[CyREOIR] = CyNOTRANS; + return IRQ_HANDLED; + } + + /* Read a byte of data if there is any - assume the error + * is associated with this character */ + + if ((rfoc = base_addr[CyRFOC]) != 0) + data = base_addr[CyRDR]; + else + data = 0; + + /* if there is nowhere to put the data, discard it */ + if (info->tty == 0) { + base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; + return IRQ_HANDLED; + } else { /* there is an open port for this data */ + tty = info->tty; + if (err & info->ignore_status_mask) { + base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; + return IRQ_HANDLED; + } + if (tty_buffer_request_room(tty, 1) != 0) { + if (err & info->read_status_mask) { + if (err & CyBREAK) { + tty_insert_flip_char(tty, data, + TTY_BREAK); + if (info->flags & ASYNC_SAK) { + do_SAK(tty); + } + } else if (err & CyFRAME) { + tty_insert_flip_char(tty, data, + TTY_FRAME); + } else if (err & CyPARITY) { + tty_insert_flip_char(tty, data, + TTY_PARITY); + } else if (err & CyOVERRUN) { + tty_insert_flip_char(tty, 0, + TTY_OVERRUN); + /* + If the flip buffer itself is + overflowing, we still lose + the next incoming character. + */ + if (tty_buffer_request_room(tty, 1) != + 0) { + tty_insert_flip_char(tty, data, + TTY_FRAME); + } + /* These two conditions may imply */ + /* a normal read should be done. */ + /* else if(data & CyTIMEOUT) */ + /* else if(data & CySPECHAR) */ + } else { + tty_insert_flip_char(tty, 0, + TTY_NORMAL); + } + } else { + tty_insert_flip_char(tty, data, TTY_NORMAL); + } + } else { + /* there was a software buffer overrun + and nothing could be done about it!!! */ + } + } + tty_schedule_flip(tty); + /* end of service */ + base_addr[CyREOIR] = rfoc ? 0 : CyNOTRANS; + return IRQ_HANDLED; +} /* cy_rxerr_interrupt */ + +static irqreturn_t cd2401_modem_interrupt(int irq, void *dev_id) +{ + struct cyclades_port *info; + volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; + int channel; + int mdm_change; + int mdm_status; + + /* determine the channel and change to that context */ + channel = (u_short) (base_addr[CyLICR] >> 2); + info = &cy_port[channel]; + info->last_active = jiffies; + + mdm_change = base_addr[CyMISR]; + mdm_status = base_addr[CyMSVR1]; + + if (info->tty == 0) { /* nowhere to put the data, ignore it */ + ; + } else { + if ((mdm_change & CyDCD) + && (info->flags & ASYNC_CHECK_CD)) { + if (mdm_status & CyDCD) { +/* CP('!'); */ + wake_up_interruptible(&info->open_wait); + } else { +/* CP('@'); */ + tty_hangup(info->tty); + wake_up_interruptible(&info->open_wait); + info->flags &= ~ASYNC_NORMAL_ACTIVE; + } + } + if ((mdm_change & CyCTS) + && (info->flags & ASYNC_CTS_FLOW)) { + if (info->tty->stopped) { + if (mdm_status & CyCTS) { + /* !!! cy_start isn't used because... */ + info->tty->stopped = 0; + base_addr[CyIER] |= CyTxMpty; + tty_wakeup(info->tty); + } + } else { + if (!(mdm_status & CyCTS)) { + /* !!! cy_stop isn't used because... */ + info->tty->stopped = 1; + base_addr[CyIER] &= + ~(CyTxMpty | CyTxRdy); + } + } + } + if (mdm_status & CyDSR) { + } + } + base_addr[CyMEOIR] = 0; + return IRQ_HANDLED; +} /* cy_modem_interrupt */ + +static irqreturn_t cd2401_tx_interrupt(int irq, void *dev_id) +{ + struct cyclades_port *info; + volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; + int channel; + int char_count, saved_cnt; + int outch; + + /* determine the channel and change to that context */ + channel = (u_short) (base_addr[CyLICR] >> 2); + + /* validate the port number (as configured and open) */ + if ((channel < 0) || (NR_PORTS <= channel)) { + base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); + base_addr[CyTEOIR] = CyNOTRANS; + return IRQ_HANDLED; + } + info = &cy_port[channel]; + info->last_active = jiffies; + if (info->tty == 0) { + base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); + base_addr[CyTEOIR] = CyNOTRANS; + return IRQ_HANDLED; + } + + /* load the on-chip space available for outbound data */ + saved_cnt = char_count = base_addr[CyTFTC]; + + if (info->x_char) { /* send special char */ + outch = info->x_char; + base_addr[CyTDR] = outch; + char_count--; + info->x_char = 0; + } + + if (info->x_break) { + /* The Cirrus chip requires the "Embedded Transmit + Commands" of start break, delay, and end break + sequences to be sent. The duration of the + break is given in TICs, which runs at HZ + (typically 100) and the PPR runs at 200 Hz, + so the delay is duration * 200/HZ, and thus a + break can run from 1/100 sec to about 5/4 sec. + Need to check these values - RGH 141095. + */ + base_addr[CyTDR] = 0; /* start break */ + base_addr[CyTDR] = 0x81; + base_addr[CyTDR] = 0; /* delay a bit */ + base_addr[CyTDR] = 0x82; + base_addr[CyTDR] = info->x_break * 200 / HZ; + base_addr[CyTDR] = 0; /* terminate break */ + base_addr[CyTDR] = 0x83; + char_count -= 7; + info->x_break = 0; + } + + while (char_count > 0) { + if (!info->xmit_cnt) { + base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); + break; + } + if (info->xmit_buf == 0) { + base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); + break; + } + if (info->tty->stopped || info->tty->hw_stopped) { + base_addr[CyIER] &= ~(CyTxMpty | CyTxRdy); + break; + } + /* Because the Embedded Transmit Commands have been + enabled, we must check to see if the escape + character, NULL, is being sent. If it is, we + must ensure that there is room for it to be + doubled in the output stream. Therefore we + no longer advance the pointer when the character + is fetched, but rather wait until after the check + for a NULL output character. (This is necessary + because there may not be room for the two chars + needed to send a NULL. + */ + outch = info->xmit_buf[info->xmit_tail]; + if (outch) { + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) + & (PAGE_SIZE - 1); + base_addr[CyTDR] = outch; + char_count--; + } else { + if (char_count > 1) { + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) + & (PAGE_SIZE - 1); + base_addr[CyTDR] = outch; + base_addr[CyTDR] = 0; + char_count--; + char_count--; + } else { + break; + } + } + } + + if (info->xmit_cnt < WAKEUP_CHARS) + tty_wakeup(info->tty); + + base_addr[CyTEOIR] = (char_count != saved_cnt) ? 0 : CyNOTRANS; + return IRQ_HANDLED; +} /* cy_tx_interrupt */ + +static irqreturn_t cd2401_rx_interrupt(int irq, void *dev_id) +{ + struct tty_struct *tty; + struct cyclades_port *info; + volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; + int channel; + char data; + int char_count; + int save_cnt; + + /* determine the channel and change to that context */ + channel = (u_short) (base_addr[CyLICR] >> 2); + info = &cy_port[channel]; + info->last_active = jiffies; + save_cnt = char_count = base_addr[CyRFOC]; + + /* if there is nowhere to put the data, discard it */ + if (info->tty == 0) { + while (char_count--) { + data = base_addr[CyRDR]; + } + } else { /* there is an open port for this data */ + tty = info->tty; + /* load # characters available from the chip */ + +#ifdef CYCLOM_ENABLE_MONITORING + ++info->mon.int_count; + info->mon.char_count += char_count; + if (char_count > info->mon.char_max) + info->mon.char_max = char_count; + info->mon.char_last = char_count; +#endif + while (char_count--) { + data = base_addr[CyRDR]; + tty_insert_flip_char(tty, data, TTY_NORMAL); +#ifdef CYCLOM_16Y_HACK + udelay(10L); +#endif + } + tty_schedule_flip(tty); + } + /* end of service */ + base_addr[CyREOIR] = save_cnt ? 0 : CyNOTRANS; + return IRQ_HANDLED; +} /* cy_rx_interrupt */ + +/* This is called whenever a port becomes active; + interrupts are enabled and DTR & RTS are turned on. + */ +static int startup(struct cyclades_port *info) +{ + unsigned long flags; + volatile unsigned char *base_addr = (unsigned char *)BASE_ADDR; + int channel; + + if (info->flags & ASYNC_INITIALIZED) { + return 0; + } + + if (!info->type) { + if (info->tty) { + set_bit(TTY_IO_ERROR, &info->tty->flags); + } + return 0; + } + if (!info->xmit_buf) { + info->xmit_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL); + if (!info->xmit_buf) { + return -ENOMEM; + } + } + + config_setup(info); + + channel = info->line; + +#ifdef SERIAL_DEBUG_OPEN + printk("startup channel %d\n", channel); +#endif + + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); + + base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ + base_addr[CyMSVR1] = CyRTS; +/* CP('S');CP('1'); */ + base_addr[CyMSVR2] = CyDTR; + +#ifdef SERIAL_DEBUG_DTR + printk("cyc: %d: raising DTR\n", __LINE__); + printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], + base_addr[CyMSVR2]); +#endif + + base_addr[CyIER] |= CyRxData; + info->flags |= ASYNC_INITIALIZED; + + if (info->tty) { + clear_bit(TTY_IO_ERROR, &info->tty->flags); + } + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + + local_irq_restore(flags); + +#ifdef SERIAL_DEBUG_OPEN + printk(" done\n"); +#endif + return 0; +} /* startup */ + +void start_xmit(struct cyclades_port *info) +{ + unsigned long flags; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + + channel = info->line; + local_irq_save(flags); + base_addr[CyCAR] = channel; + base_addr[CyIER] |= CyTxMpty; + local_irq_restore(flags); +} /* start_xmit */ + +/* + * This routine shuts down a serial port; interrupts are disabled, + * and DTR is dropped if the hangup on close termio flag is on. + */ +static void shutdown(struct cyclades_port *info) +{ + unsigned long flags; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + + if (!(info->flags & ASYNC_INITIALIZED)) { +/* CP('$'); */ + return; + } + + channel = info->line; + +#ifdef SERIAL_DEBUG_OPEN + printk("shutdown channel %d\n", channel); +#endif + + /* !!! REALLY MUST WAIT FOR LAST CHARACTER TO BE + SENT BEFORE DROPPING THE LINE !!! (Perhaps + set some flag that is read when XMTY happens.) + Other choices are to delay some fixed interval + or schedule some later processing. + */ + local_irq_save(flags); + if (info->xmit_buf) { + free_page((unsigned long)info->xmit_buf); + info->xmit_buf = NULL; + } + + base_addr[CyCAR] = (u_char) channel; + if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { + base_addr[CyMSVR1] = 0; +/* CP('C');CP('1'); */ + base_addr[CyMSVR2] = 0; +#ifdef SERIAL_DEBUG_DTR + printk("cyc: %d: dropping DTR\n", __LINE__); + printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], + base_addr[CyMSVR2]); +#endif + } + write_cy_cmd(base_addr, CyDIS_RCVR); + /* it may be appropriate to clear _XMIT at + some later date (after testing)!!! */ + + if (info->tty) { + set_bit(TTY_IO_ERROR, &info->tty->flags); + } + info->flags &= ~ASYNC_INITIALIZED; + local_irq_restore(flags); + +#ifdef SERIAL_DEBUG_OPEN + printk(" done\n"); +#endif +} /* shutdown */ + +/* + * This routine finds or computes the various line characteristics. + */ +static void config_setup(struct cyclades_port *info) +{ + unsigned long flags; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + unsigned cflag; + int i; + unsigned char ti, need_init_chan = 0; + + if (!info->tty || !info->tty->termios) { + return; + } + if (info->line == -1) { + return; + } + cflag = info->tty->termios->c_cflag; + + /* baud rate */ + i = cflag & CBAUD; +#ifdef CBAUDEX +/* Starting with kernel 1.1.65, there is direct support for + higher baud rates. The following code supports those + changes. The conditional aspect allows this driver to be + used for earlier as well as later kernel versions. (The + mapping is slightly different from serial.c because there + is still the possibility of supporting 75 kbit/sec with + the Cyclades board.) + */ + if (i & CBAUDEX) { + if (i == B57600) + i = 16; + else if (i == B115200) + i = 18; +#ifdef B78600 + else if (i == B78600) + i = 17; +#endif + else + info->tty->termios->c_cflag &= ~CBAUDEX; + } +#endif + if (i == 15) { + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + i += 1; + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + i += 3; + } + /* Don't ever change the speed of the console port. It will + * run at the speed specified in bootinfo, or at 19.2K */ + /* Actually, it should run at whatever speed 166Bug was using */ + /* Note info->timeout isn't used at present */ + if (info != serial_console_info) { + info->tbpr = baud_bpr[i]; /* Tx BPR */ + info->tco = baud_co[i]; /* Tx CO */ + info->rbpr = baud_bpr[i]; /* Rx BPR */ + info->rco = baud_co[i] >> 5; /* Rx CO */ + if (baud_table[i] == 134) { + info->timeout = + (info->xmit_fifo_size * HZ * 30 / 269) + 2; + /* get it right for 134.5 baud */ + } else if (baud_table[i]) { + info->timeout = + (info->xmit_fifo_size * HZ * 15 / baud_table[i]) + + 2; + /* this needs to be propagated into the card info */ + } else { + info->timeout = 0; + } + } + /* By tradition (is it a standard?) a baud rate of zero + implies the line should be/has been closed. A bit + later in this routine such a test is performed. */ + + /* byte size and parity */ + info->cor7 = 0; + info->cor6 = 0; + info->cor5 = 0; + info->cor4 = (info->default_threshold ? info->default_threshold : baud_cor4[i]); /* receive threshold */ + /* Following two lines added 101295, RGH. */ + /* It is obviously wrong to access CyCORx, and not info->corx here, + * try and remember to fix it later! */ + channel = info->line; + base_addr[CyCAR] = (u_char) channel; + if (C_CLOCAL(info->tty)) { + if (base_addr[CyIER] & CyMdmCh) + base_addr[CyIER] &= ~CyMdmCh; /* without modem intr */ + /* ignore 1->0 modem transitions */ + if (base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) + base_addr[CyCOR4] &= ~(CyDSR | CyCTS | CyDCD); + /* ignore 0->1 modem transitions */ + if (base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) + base_addr[CyCOR5] &= ~(CyDSR | CyCTS | CyDCD); + } else { + if ((base_addr[CyIER] & CyMdmCh) != CyMdmCh) + base_addr[CyIER] |= CyMdmCh; /* with modem intr */ + /* act on 1->0 modem transitions */ + if ((base_addr[CyCOR4] & (CyDSR | CyCTS | CyDCD)) != + (CyDSR | CyCTS | CyDCD)) + base_addr[CyCOR4] |= CyDSR | CyCTS | CyDCD; + /* act on 0->1 modem transitions */ + if ((base_addr[CyCOR5] & (CyDSR | CyCTS | CyDCD)) != + (CyDSR | CyCTS | CyDCD)) + base_addr[CyCOR5] |= CyDSR | CyCTS | CyDCD; + } + info->cor3 = (cflag & CSTOPB) ? Cy_2_STOP : Cy_1_STOP; + info->cor2 = CyETC; + switch (cflag & CSIZE) { + case CS5: + info->cor1 = Cy_5_BITS; + break; + case CS6: + info->cor1 = Cy_6_BITS; + break; + case CS7: + info->cor1 = Cy_7_BITS; + break; + case CS8: + info->cor1 = Cy_8_BITS; + break; + } + if (cflag & PARENB) { + if (cflag & PARODD) { + info->cor1 |= CyPARITY_O; + } else { + info->cor1 |= CyPARITY_E; + } + } else { + info->cor1 |= CyPARITY_NONE; + } + + /* CTS flow control flag */ +#if 0 + /* Don't complcate matters for now! RGH 141095 */ + if (cflag & CRTSCTS) { + info->flags |= ASYNC_CTS_FLOW; + info->cor2 |= CyCtsAE; + } else { + info->flags &= ~ASYNC_CTS_FLOW; + info->cor2 &= ~CyCtsAE; + } +#endif + if (cflag & CLOCAL) + info->flags &= ~ASYNC_CHECK_CD; + else + info->flags |= ASYNC_CHECK_CD; + + /*********************************************** + The hardware option, CyRtsAO, presents RTS when + the chip has characters to send. Since most modems + use RTS as reverse (inbound) flow control, this + option is not used. If inbound flow control is + necessary, DTR can be programmed to provide the + appropriate signals for use with a non-standard + cable. Contact Marcio Saito for details. + ***********************************************/ + + channel = info->line; + + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + + /* CyCMR set once only in mvme167_init_serial() */ + if (base_addr[CyLICR] != channel << 2) + base_addr[CyLICR] = channel << 2; + if (base_addr[CyLIVR] != 0x5c) + base_addr[CyLIVR] = 0x5c; + + /* tx and rx baud rate */ + + if (base_addr[CyCOR1] != info->cor1) + need_init_chan = 1; + if (base_addr[CyTCOR] != info->tco) + base_addr[CyTCOR] = info->tco; + if (base_addr[CyTBPR] != info->tbpr) + base_addr[CyTBPR] = info->tbpr; + if (base_addr[CyRCOR] != info->rco) + base_addr[CyRCOR] = info->rco; + if (base_addr[CyRBPR] != info->rbpr) + base_addr[CyRBPR] = info->rbpr; + + /* set line characteristics according configuration */ + + if (base_addr[CySCHR1] != START_CHAR(info->tty)) + base_addr[CySCHR1] = START_CHAR(info->tty); + if (base_addr[CySCHR2] != STOP_CHAR(info->tty)) + base_addr[CySCHR2] = STOP_CHAR(info->tty); + if (base_addr[CySCRL] != START_CHAR(info->tty)) + base_addr[CySCRL] = START_CHAR(info->tty); + if (base_addr[CySCRH] != START_CHAR(info->tty)) + base_addr[CySCRH] = START_CHAR(info->tty); + if (base_addr[CyCOR1] != info->cor1) + base_addr[CyCOR1] = info->cor1; + if (base_addr[CyCOR2] != info->cor2) + base_addr[CyCOR2] = info->cor2; + if (base_addr[CyCOR3] != info->cor3) + base_addr[CyCOR3] = info->cor3; + if (base_addr[CyCOR4] != info->cor4) + base_addr[CyCOR4] = info->cor4; + if (base_addr[CyCOR5] != info->cor5) + base_addr[CyCOR5] = info->cor5; + if (base_addr[CyCOR6] != info->cor6) + base_addr[CyCOR6] = info->cor6; + if (base_addr[CyCOR7] != info->cor7) + base_addr[CyCOR7] = info->cor7; + + if (need_init_chan) + write_cy_cmd(base_addr, CyINIT_CHAN); + + base_addr[CyCAR] = (u_char) channel; /* !!! Is this needed? */ + + /* 2ms default rx timeout */ + ti = info->default_timeout ? info->default_timeout : 0x02; + if (base_addr[CyRTPRL] != ti) + base_addr[CyRTPRL] = ti; + if (base_addr[CyRTPRH] != 0) + base_addr[CyRTPRH] = 0; + + /* Set up RTS here also ????? RGH 141095 */ + if (i == 0) { /* baud rate is zero, turn off line */ + if ((base_addr[CyMSVR2] & CyDTR) == CyDTR) + base_addr[CyMSVR2] = 0; +#ifdef SERIAL_DEBUG_DTR + printk("cyc: %d: dropping DTR\n", __LINE__); + printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], + base_addr[CyMSVR2]); +#endif + } else { + if ((base_addr[CyMSVR2] & CyDTR) != CyDTR) + base_addr[CyMSVR2] = CyDTR; +#ifdef SERIAL_DEBUG_DTR + printk("cyc: %d: raising DTR\n", __LINE__); + printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], + base_addr[CyMSVR2]); +#endif + } + + if (info->tty) { + clear_bit(TTY_IO_ERROR, &info->tty->flags); + } + + local_irq_restore(flags); + +} /* config_setup */ + +static int cy_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + +#ifdef SERIAL_DEBUG_IO + printk("cy_put_char %s(0x%02x)\n", tty->name, ch); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_put_char")) + return 0; + + if (!info->xmit_buf) + return 0; + + local_irq_save(flags); + if (info->xmit_cnt >= PAGE_SIZE - 1) { + local_irq_restore(flags); + return 0; + } + + info->xmit_buf[info->xmit_head++] = ch; + info->xmit_head &= PAGE_SIZE - 1; + info->xmit_cnt++; + local_irq_restore(flags); + return 1; +} /* cy_put_char */ + +static void cy_flush_chars(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + +#ifdef SERIAL_DEBUG_IO + printk("cy_flush_chars %s\n", tty->name); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) + return; + + if (info->xmit_cnt <= 0 || tty->stopped + || tty->hw_stopped || !info->xmit_buf) + return; + + channel = info->line; + + local_irq_save(flags); + base_addr[CyCAR] = channel; + base_addr[CyIER] |= CyTxMpty; + local_irq_restore(flags); +} /* cy_flush_chars */ + +/* This routine gets called when tty_write has put something into + the write_queue. If the port is not already transmitting stuff, + start it off by enabling interrupts. The interrupt service + routine will then ensure that the characters are sent. If the + port is already active, there is no need to kick it. + */ +static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + int c, total = 0; + +#ifdef SERIAL_DEBUG_IO + printk("cy_write %s\n", tty->name); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_write")) { + return 0; + } + + if (!info->xmit_buf) { + return 0; + } + + while (1) { + local_irq_save(flags); + c = min_t(int, count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1, + SERIAL_XMIT_SIZE - info->xmit_head)); + if (c <= 0) { + local_irq_restore(flags); + break; + } + + memcpy(info->xmit_buf + info->xmit_head, buf, c); + info->xmit_head = + (info->xmit_head + c) & (SERIAL_XMIT_SIZE - 1); + info->xmit_cnt += c; + local_irq_restore(flags); + + buf += c; + count -= c; + total += c; + } + + if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { + start_xmit(info); + } + return total; +} /* cy_write */ + +static int cy_write_room(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + int ret; + +#ifdef SERIAL_DEBUG_IO + printk("cy_write_room %s\n", tty->name); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_write_room")) + return 0; + ret = PAGE_SIZE - info->xmit_cnt - 1; + if (ret < 0) + ret = 0; + return ret; +} /* cy_write_room */ + +static int cy_chars_in_buffer(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + +#ifdef SERIAL_DEBUG_IO + printk("cy_chars_in_buffer %s %d\n", tty->name, info->xmit_cnt); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) + return 0; + + return info->xmit_cnt; +} /* cy_chars_in_buffer */ + +static void cy_flush_buffer(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + +#ifdef SERIAL_DEBUG_IO + printk("cy_flush_buffer %s\n", tty->name); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) + return; + local_irq_save(flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + local_irq_restore(flags); + tty_wakeup(tty); +} /* cy_flush_buffer */ + +/* This routine is called by the upper-layer tty layer to signal + that incoming characters should be throttled or that the + throttle should be released. + */ +static void cy_throttle(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + +#ifdef SERIAL_DEBUG_THROTTLE + char buf[64]; + + printk("throttle %s: %d....\n", tty_name(tty, buf), + tty->ldisc.chars_in_buffer(tty)); + printk("cy_throttle %s\n", tty->name); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { + return; + } + + if (I_IXOFF(tty)) { + info->x_char = STOP_CHAR(tty); + /* Should use the "Send Special Character" feature!!! */ + } + + channel = info->line; + + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + base_addr[CyMSVR1] = 0; + local_irq_restore(flags); +} /* cy_throttle */ + +static void cy_unthrottle(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + unsigned long flags; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + +#ifdef SERIAL_DEBUG_THROTTLE + char buf[64]; + + printk("throttle %s: %d....\n", tty_name(tty, buf), + tty->ldisc.chars_in_buffer(tty)); + printk("cy_unthrottle %s\n", tty->name); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_nthrottle")) { + return; + } + + if (I_IXOFF(tty)) { + info->x_char = START_CHAR(tty); + /* Should use the "Send Special Character" feature!!! */ + } + + channel = info->line; + + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + base_addr[CyMSVR1] = CyRTS; + local_irq_restore(flags); +} /* cy_unthrottle */ + +static int +get_serial_info(struct cyclades_port *info, + struct serial_struct __user * retinfo) +{ + struct serial_struct tmp; + +/* CP('g'); */ + if (!retinfo) + return -EFAULT; + memset(&tmp, 0, sizeof(tmp)); + tmp.type = info->type; + tmp.line = info->line; + tmp.port = info->line; + tmp.irq = 0; + tmp.flags = info->flags; + tmp.baud_base = 0; /*!!! */ + tmp.close_delay = info->close_delay; + tmp.custom_divisor = 0; /*!!! */ + tmp.hub6 = 0; /*!!! */ + return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; +} /* get_serial_info */ + +static int +set_serial_info(struct cyclades_port *info, + struct serial_struct __user * new_info) +{ + struct serial_struct new_serial; + struct cyclades_port old_info; + +/* CP('s'); */ + if (!new_info) + return -EFAULT; + if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) + return -EFAULT; + old_info = *info; + + if (!capable(CAP_SYS_ADMIN)) { + if ((new_serial.close_delay != info->close_delay) || + ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) != + (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))) + return -EPERM; + info->flags = ((info->flags & ~ASYNC_USR_MASK) | + (new_serial.flags & ASYNC_USR_MASK)); + goto check_and_exit; + } + + /* + * OK, past this point, all the error checking has been done. + * At this point, we start making changes..... + */ + + info->flags = ((info->flags & ~ASYNC_FLAGS) | + (new_serial.flags & ASYNC_FLAGS)); + info->close_delay = new_serial.close_delay; + +check_and_exit: + if (info->flags & ASYNC_INITIALIZED) { + config_setup(info); + return 0; + } + return startup(info); +} /* set_serial_info */ + +static int cy_tiocmget(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + int channel; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + unsigned long flags; + unsigned char status; + + channel = info->line; + + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + status = base_addr[CyMSVR1] | base_addr[CyMSVR2]; + local_irq_restore(flags); + + return ((status & CyRTS) ? TIOCM_RTS : 0) + | ((status & CyDTR) ? TIOCM_DTR : 0) + | ((status & CyDCD) ? TIOCM_CAR : 0) + | ((status & CyDSR) ? TIOCM_DSR : 0) + | ((status & CyCTS) ? TIOCM_CTS : 0); +} /* cy_tiocmget */ + +static int +cy_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) +{ + struct cyclades_port *info = tty->driver_data; + int channel; + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + unsigned long flags; + + channel = info->line; + + if (set & TIOCM_RTS) { + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + base_addr[CyMSVR1] = CyRTS; + local_irq_restore(flags); + } + if (set & TIOCM_DTR) { + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; +/* CP('S');CP('2'); */ + base_addr[CyMSVR2] = CyDTR; +#ifdef SERIAL_DEBUG_DTR + printk("cyc: %d: raising DTR\n", __LINE__); + printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], + base_addr[CyMSVR2]); +#endif + local_irq_restore(flags); + } + + if (clear & TIOCM_RTS) { + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + base_addr[CyMSVR1] = 0; + local_irq_restore(flags); + } + if (clear & TIOCM_DTR) { + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; +/* CP('C');CP('2'); */ + base_addr[CyMSVR2] = 0; +#ifdef SERIAL_DEBUG_DTR + printk("cyc: %d: dropping DTR\n", __LINE__); + printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], + base_addr[CyMSVR2]); +#endif + local_irq_restore(flags); + } + + return 0; +} /* set_modem_info */ + +static void send_break(struct cyclades_port *info, int duration) +{ /* Let the transmit ISR take care of this (since it + requires stuffing characters into the output stream). + */ + info->x_break = duration; + if (!info->xmit_cnt) { + start_xmit(info); + } +} /* send_break */ + +static int +get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) +{ + + if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) + return -EFAULT; + info->mon.int_count = 0; + info->mon.char_count = 0; + info->mon.char_max = 0; + info->mon.char_last = 0; + return 0; +} + +static int set_threshold(struct cyclades_port *info, unsigned long __user * arg) +{ + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + unsigned long value; + int channel; + + if (get_user(value, arg)) + return -EFAULT; + + channel = info->line; + info->cor4 &= ~CyREC_FIFO; + info->cor4 |= value & CyREC_FIFO; + base_addr[CyCOR4] = info->cor4; + return 0; +} + +static int +get_threshold(struct cyclades_port *info, unsigned long __user * value) +{ + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + unsigned long tmp; + + channel = info->line; + + tmp = base_addr[CyCOR4] & CyREC_FIFO; + return put_user(tmp, value); +} + +static int +set_default_threshold(struct cyclades_port *info, unsigned long __user * arg) +{ + unsigned long value; + + if (get_user(value, arg)) + return -EFAULT; + + info->default_threshold = value & 0x0f; + return 0; +} + +static int +get_default_threshold(struct cyclades_port *info, unsigned long __user * value) +{ + return put_user(info->default_threshold, value); +} + +static int set_timeout(struct cyclades_port *info, unsigned long __user * arg) +{ + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + unsigned long value; + + if (get_user(value, arg)) + return -EFAULT; + + channel = info->line; + + base_addr[CyRTPRL] = value & 0xff; + base_addr[CyRTPRH] = (value >> 8) & 0xff; + return 0; +} + +static int get_timeout(struct cyclades_port *info, unsigned long __user * value) +{ + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + unsigned long tmp; + + channel = info->line; + + tmp = base_addr[CyRTPRL]; + return put_user(tmp, value); +} + +static int set_default_timeout(struct cyclades_port *info, unsigned long value) +{ + info->default_timeout = value & 0xff; + return 0; +} + +static int +get_default_timeout(struct cyclades_port *info, unsigned long __user * value) +{ + return put_user(info->default_timeout, value); +} + +static int +cy_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct cyclades_port *info = tty->driver_data; + int ret_val = 0; + void __user *argp = (void __user *)arg; + +#ifdef SERIAL_DEBUG_OTHER + printk("cy_ioctl %s, cmd = %x arg = %lx\n", tty->name, cmd, arg); /* */ +#endif + + tty_lock(); + + switch (cmd) { + case CYGETMON: + ret_val = get_mon_info(info, argp); + break; + case CYGETTHRESH: + ret_val = get_threshold(info, argp); + break; + case CYSETTHRESH: + ret_val = set_threshold(info, argp); + break; + case CYGETDEFTHRESH: + ret_val = get_default_threshold(info, argp); + break; + case CYSETDEFTHRESH: + ret_val = set_default_threshold(info, argp); + break; + case CYGETTIMEOUT: + ret_val = get_timeout(info, argp); + break; + case CYSETTIMEOUT: + ret_val = set_timeout(info, argp); + break; + case CYGETDEFTIMEOUT: + ret_val = get_default_timeout(info, argp); + break; + case CYSETDEFTIMEOUT: + ret_val = set_default_timeout(info, (unsigned long)arg); + break; + case TCSBRK: /* SVID version: non-zero arg --> no break */ + ret_val = tty_check_change(tty); + if (ret_val) + break; + tty_wait_until_sent(tty, 0); + if (!arg) + send_break(info, HZ / 4); /* 1/4 second */ + break; + case TCSBRKP: /* support for POSIX tcsendbreak() */ + ret_val = tty_check_change(tty); + if (ret_val) + break; + tty_wait_until_sent(tty, 0); + send_break(info, arg ? arg * (HZ / 10) : HZ / 4); + break; + +/* The following commands are incompletely implemented!!! */ + case TIOCGSERIAL: + ret_val = get_serial_info(info, argp); + break; + case TIOCSSERIAL: + ret_val = set_serial_info(info, argp); + break; + default: + ret_val = -ENOIOCTLCMD; + } + tty_unlock(); + +#ifdef SERIAL_DEBUG_OTHER + printk("cy_ioctl done\n"); +#endif + + return ret_val; +} /* cy_ioctl */ + +static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) +{ + struct cyclades_port *info = tty->driver_data; + +#ifdef SERIAL_DEBUG_OTHER + printk("cy_set_termios %s\n", tty->name); +#endif + + if (tty->termios->c_cflag == old_termios->c_cflag) + return; + config_setup(info); + + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->stopped = 0; + cy_start(tty); + } +#ifdef tytso_patch_94Nov25_1726 + if (!(old_termios->c_cflag & CLOCAL) && + (tty->termios->c_cflag & CLOCAL)) + wake_up_interruptible(&info->open_wait); +#endif +} /* cy_set_termios */ + +static void cy_close(struct tty_struct *tty, struct file *filp) +{ + struct cyclades_port *info = tty->driver_data; + +/* CP('C'); */ +#ifdef SERIAL_DEBUG_OTHER + printk("cy_close %s\n", tty->name); +#endif + + if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { + return; + } +#ifdef SERIAL_DEBUG_OPEN + printk("cy_close %s, count = %d\n", tty->name, info->count); +#endif + + if ((tty->count == 1) && (info->count != 1)) { + /* + * Uh, oh. tty->count is 1, which means that the tty + * structure will be freed. Info->count should always + * be one in these conditions. If it's greater than + * one, we've got real problems, since it means the + * serial port won't be shutdown. + */ + printk("cy_close: bad serial port count; tty->count is 1, " + "info->count is %d\n", info->count); + info->count = 1; + } +#ifdef SERIAL_DEBUG_COUNT + printk("cyc: %d: decrementing count to %d\n", __LINE__, + info->count - 1); +#endif + if (--info->count < 0) { + printk("cy_close: bad serial port count for ttys%d: %d\n", + info->line, info->count); +#ifdef SERIAL_DEBUG_COUNT + printk("cyc: %d: setting count to 0\n", __LINE__); +#endif + info->count = 0; + } + if (info->count) + return; + info->flags |= ASYNC_CLOSING; + if (info->flags & ASYNC_INITIALIZED) + tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ + shutdown(info); + cy_flush_buffer(tty); + tty_ldisc_flush(tty); + info->tty = NULL; + if (info->blocked_open) { + if (info->close_delay) { + msleep_interruptible(jiffies_to_msecs + (info->close_delay)); + } + wake_up_interruptible(&info->open_wait); + } + info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); + wake_up_interruptible(&info->close_wait); + +#ifdef SERIAL_DEBUG_OTHER + printk("cy_close done\n"); +#endif +} /* cy_close */ + +/* + * cy_hangup() --- called by tty_hangup() when a hangup is signaled. + */ +void cy_hangup(struct tty_struct *tty) +{ + struct cyclades_port *info = tty->driver_data; + +#ifdef SERIAL_DEBUG_OTHER + printk("cy_hangup %s\n", tty->name); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_hangup")) + return; + + shutdown(info); +#if 0 + info->event = 0; + info->count = 0; +#ifdef SERIAL_DEBUG_COUNT + printk("cyc: %d: setting count to 0\n", __LINE__); +#endif + info->tty = 0; +#endif + info->flags &= ~ASYNC_NORMAL_ACTIVE; + wake_up_interruptible(&info->open_wait); +} /* cy_hangup */ + +/* + * ------------------------------------------------------------ + * cy_open() and friends + * ------------------------------------------------------------ + */ + +static int +block_til_ready(struct tty_struct *tty, struct file *filp, + struct cyclades_port *info) +{ + DECLARE_WAITQUEUE(wait, current); + unsigned long flags; + int channel; + int retval; + volatile u_char *base_addr = (u_char *) BASE_ADDR; + + /* + * If the device is in the middle of being closed, then block + * until it's done, and then try again. + */ + if (info->flags & ASYNC_CLOSING) { + interruptible_sleep_on(&info->close_wait); + if (info->flags & ASYNC_HUP_NOTIFY) { + return -EAGAIN; + } else { + return -ERESTARTSYS; + } + } + + /* + * If non-blocking mode is set, then make the check up front + * and then exit. + */ + if (filp->f_flags & O_NONBLOCK) { + info->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + /* + * Block waiting for the carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, info->count is dropped by one, so that + * cy_close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + retval = 0; + add_wait_queue(&info->open_wait, &wait); +#ifdef SERIAL_DEBUG_OPEN + printk("block_til_ready before block: %s, count = %d\n", + tty->name, info->count); + /**/ +#endif + info->count--; +#ifdef SERIAL_DEBUG_COUNT + printk("cyc: %d: decrementing count to %d\n", __LINE__, info->count); +#endif + info->blocked_open++; + + channel = info->line; + + while (1) { + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; + base_addr[CyMSVR1] = CyRTS; +/* CP('S');CP('4'); */ + base_addr[CyMSVR2] = CyDTR; +#ifdef SERIAL_DEBUG_DTR + printk("cyc: %d: raising DTR\n", __LINE__); + printk(" status: 0x%x, 0x%x\n", base_addr[CyMSVR1], + base_addr[CyMSVR2]); +#endif + local_irq_restore(flags); + set_current_state(TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp) + || !(info->flags & ASYNC_INITIALIZED)) { + if (info->flags & ASYNC_HUP_NOTIFY) { + retval = -EAGAIN; + } else { + retval = -ERESTARTSYS; + } + break; + } + local_irq_save(flags); + base_addr[CyCAR] = (u_char) channel; +/* CP('L');CP1(1 && C_CLOCAL(tty)); CP1(1 && (base_addr[CyMSVR1] & CyDCD) ); */ + if (!(info->flags & ASYNC_CLOSING) + && (C_CLOCAL(tty) + || (base_addr[CyMSVR1] & CyDCD))) { + local_irq_restore(flags); + break; + } + local_irq_restore(flags); + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } +#ifdef SERIAL_DEBUG_OPEN + printk("block_til_ready blocking: %s, count = %d\n", + tty->name, info->count); + /**/ +#endif + tty_unlock(); + schedule(); + tty_lock(); + } + __set_current_state(TASK_RUNNING); + remove_wait_queue(&info->open_wait, &wait); + if (!tty_hung_up_p(filp)) { + info->count++; +#ifdef SERIAL_DEBUG_COUNT + printk("cyc: %d: incrementing count to %d\n", __LINE__, + info->count); +#endif + } + info->blocked_open--; +#ifdef SERIAL_DEBUG_OPEN + printk("block_til_ready after blocking: %s, count = %d\n", + tty->name, info->count); + /**/ +#endif + if (retval) + return retval; + info->flags |= ASYNC_NORMAL_ACTIVE; + return 0; +} /* block_til_ready */ + +/* + * This routine is called whenever a serial port is opened. It + * performs the serial-specific initialization for the tty structure. + */ +int cy_open(struct tty_struct *tty, struct file *filp) +{ + struct cyclades_port *info; + int retval, line; + +/* CP('O'); */ + line = tty->index; + if ((line < 0) || (NR_PORTS <= line)) { + return -ENODEV; + } + info = &cy_port[line]; + if (info->line < 0) { + return -ENODEV; + } +#ifdef SERIAL_DEBUG_OTHER + printk("cy_open %s\n", tty->name); /* */ +#endif + if (serial_paranoia_check(info, tty->name, "cy_open")) { + return -ENODEV; + } +#ifdef SERIAL_DEBUG_OPEN + printk("cy_open %s, count = %d\n", tty->name, info->count); + /**/ +#endif + info->count++; +#ifdef SERIAL_DEBUG_COUNT + printk("cyc: %d: incrementing count to %d\n", __LINE__, info->count); +#endif + tty->driver_data = info; + info->tty = tty; + + /* + * Start up serial port + */ + retval = startup(info); + if (retval) { + return retval; + } + + retval = block_til_ready(tty, filp, info); + if (retval) { +#ifdef SERIAL_DEBUG_OPEN + printk("cy_open returning after block_til_ready with %d\n", + retval); +#endif + return retval; + } +#ifdef SERIAL_DEBUG_OPEN + printk("cy_open done\n"); + /**/ +#endif + return 0; +} /* cy_open */ + +/* + * --------------------------------------------------------------------- + * serial167_init() and friends + * + * serial167_init() is called at boot-time to initialize the serial driver. + * --------------------------------------------------------------------- + */ + +/* + * This routine prints out the appropriate serial driver version + * number, and identifies which options were configured into this + * driver. + */ +static void show_version(void) +{ + printk("MVME166/167 cd2401 driver\n"); +} /* show_version */ + +/* initialize chips on card -- return number of valid + chips (which is number of ports/4) */ + +/* + * This initialises the hardware to a reasonable state. It should + * probe the chip first so as to copy 166-Bug setup as a default for + * port 0. It initialises CMR to CyASYNC; that is never done again, so + * as to limit the number of CyINIT_CHAN commands in normal running. + * + * ... I wonder what I should do if this fails ... + */ + +void mvme167_serial_console_setup(int cflag) +{ + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int ch; + u_char spd; + u_char rcor, rbpr, badspeed = 0; + unsigned long flags; + + local_irq_save(flags); + + /* + * First probe channel zero of the chip, to see what speed has + * been selected. + */ + + base_addr[CyCAR] = 0; + + rcor = base_addr[CyRCOR] << 5; + rbpr = base_addr[CyRBPR]; + + for (spd = 0; spd < sizeof(baud_bpr); spd++) + if (rbpr == baud_bpr[spd] && rcor == baud_co[spd]) + break; + if (spd >= sizeof(baud_bpr)) { + spd = 14; /* 19200 */ + badspeed = 1; /* Failed to identify speed */ + } + initial_console_speed = spd; + + /* OK, we have chosen a speed, now reset and reinitialise */ + + my_udelay(20000L); /* Allow time for any active o/p to complete */ + if (base_addr[CyCCR] != 0x00) { + local_irq_restore(flags); + /* printk(" chip is never idle (CCR != 0)\n"); */ + return; + } + + base_addr[CyCCR] = CyCHIP_RESET; /* Reset the chip */ + my_udelay(1000L); + + if (base_addr[CyGFRCR] == 0x00) { + local_irq_restore(flags); + /* printk(" chip is not responding (GFRCR stayed 0)\n"); */ + return; + } + + /* + * System clock is 20Mhz, divided by 2048, so divide by 10 for a 1.0ms + * tick + */ + + base_addr[CyTPR] = 10; + + base_addr[CyPILR1] = 0x01; /* Interrupt level for modem change */ + base_addr[CyPILR2] = 0x02; /* Interrupt level for tx ints */ + base_addr[CyPILR3] = 0x03; /* Interrupt level for rx ints */ + + /* + * Attempt to set up all channels to something reasonable, and + * bang out a INIT_CHAN command. We should then be able to limit + * the amount of fiddling we have to do in normal running. + */ + + for (ch = 3; ch >= 0; ch--) { + base_addr[CyCAR] = (u_char) ch; + base_addr[CyIER] = 0; + base_addr[CyCMR] = CyASYNC; + base_addr[CyLICR] = (u_char) ch << 2; + base_addr[CyLIVR] = 0x5c; + base_addr[CyTCOR] = baud_co[spd]; + base_addr[CyTBPR] = baud_bpr[spd]; + base_addr[CyRCOR] = baud_co[spd] >> 5; + base_addr[CyRBPR] = baud_bpr[spd]; + base_addr[CySCHR1] = 'Q' & 0x1f; + base_addr[CySCHR2] = 'X' & 0x1f; + base_addr[CySCRL] = 0; + base_addr[CySCRH] = 0; + base_addr[CyCOR1] = Cy_8_BITS | CyPARITY_NONE; + base_addr[CyCOR2] = 0; + base_addr[CyCOR3] = Cy_1_STOP; + base_addr[CyCOR4] = baud_cor4[spd]; + base_addr[CyCOR5] = 0; + base_addr[CyCOR6] = 0; + base_addr[CyCOR7] = 0; + base_addr[CyRTPRL] = 2; + base_addr[CyRTPRH] = 0; + base_addr[CyMSVR1] = 0; + base_addr[CyMSVR2] = 0; + write_cy_cmd(base_addr, CyINIT_CHAN | CyDIS_RCVR | CyDIS_XMTR); + } + + /* + * Now do specials for channel zero.... + */ + + base_addr[CyMSVR1] = CyRTS; + base_addr[CyMSVR2] = CyDTR; + base_addr[CyIER] = CyRxData; + write_cy_cmd(base_addr, CyENB_RCVR | CyENB_XMTR); + + local_irq_restore(flags); + + my_udelay(20000L); /* Let it all settle down */ + + printk("CD2401 initialised, chip is rev 0x%02x\n", base_addr[CyGFRCR]); + if (badspeed) + printk + (" WARNING: Failed to identify line speed, rcor=%02x,rbpr=%02x\n", + rcor >> 5, rbpr); +} /* serial_console_init */ + +static const struct tty_operations cy_ops = { + .open = cy_open, + .close = cy_close, + .write = cy_write, + .put_char = cy_put_char, + .flush_chars = cy_flush_chars, + .write_room = cy_write_room, + .chars_in_buffer = cy_chars_in_buffer, + .flush_buffer = cy_flush_buffer, + .ioctl = cy_ioctl, + .throttle = cy_throttle, + .unthrottle = cy_unthrottle, + .set_termios = cy_set_termios, + .stop = cy_stop, + .start = cy_start, + .hangup = cy_hangup, + .tiocmget = cy_tiocmget, + .tiocmset = cy_tiocmset, +}; + +/* The serial driver boot-time initialization code! + Hardware I/O ports are mapped to character special devices on a + first found, first allocated manner. That is, this code searches + for Cyclom cards in the system. As each is found, it is probed + to discover how many chips (and thus how many ports) are present. + These ports are mapped to the tty ports 64 and upward in monotonic + fashion. If an 8-port card is replaced with a 16-port card, the + port mapping on a following card will shift. + + This approach is different from what is used in the other serial + device driver because the Cyclom is more properly a multiplexer, + not just an aggregation of serial ports on one card. + + If there are more cards with more ports than have been statically + allocated above, a warning is printed and the extra ports are ignored. + */ +static int __init serial167_init(void) +{ + struct cyclades_port *info; + int ret = 0; + int good_ports = 0; + int port_num = 0; + int index; + int DefSpeed; +#ifdef notyet + struct sigaction sa; +#endif + + if (!(mvme16x_config & MVME16x_CONFIG_GOT_CD2401)) + return 0; + + cy_serial_driver = alloc_tty_driver(NR_PORTS); + if (!cy_serial_driver) + return -ENOMEM; + +#if 0 + scrn[1] = '\0'; +#endif + + show_version(); + + /* Has "console=0,9600n8" been used in bootinfo to change speed? */ + if (serial_console_cflag) + DefSpeed = serial_console_cflag & 0017; + else { + DefSpeed = initial_console_speed; + serial_console_info = &cy_port[0]; + serial_console_cflag = DefSpeed | CS8; +#if 0 + serial_console = 64; /*callout_driver.minor_start */ +#endif + } + + /* Initialize the tty_driver structure */ + + cy_serial_driver->owner = THIS_MODULE; + cy_serial_driver->name = "ttyS"; + cy_serial_driver->major = TTY_MAJOR; + cy_serial_driver->minor_start = 64; + cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; + cy_serial_driver->init_termios = tty_std_termios; + cy_serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + cy_serial_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(cy_serial_driver, &cy_ops); + + ret = tty_register_driver(cy_serial_driver); + if (ret) { + printk(KERN_ERR "Couldn't register MVME166/7 serial driver\n"); + put_tty_driver(cy_serial_driver); + return ret; + } + + port_num = 0; + info = cy_port; + for (index = 0; index < 1; index++) { + + good_ports = 4; + + if (port_num < NR_PORTS) { + while (good_ports-- && port_num < NR_PORTS) { + /*** initialize port ***/ + info->magic = CYCLADES_MAGIC; + info->type = PORT_CIRRUS; + info->card = index; + info->line = port_num; + info->flags = STD_COM_FLAGS; + info->tty = NULL; + info->xmit_fifo_size = 12; + info->cor1 = CyPARITY_NONE | Cy_8_BITS; + info->cor2 = CyETC; + info->cor3 = Cy_1_STOP; + info->cor4 = 0x08; /* _very_ small receive threshold */ + info->cor5 = 0; + info->cor6 = 0; + info->cor7 = 0; + info->tbpr = baud_bpr[DefSpeed]; /* Tx BPR */ + info->tco = baud_co[DefSpeed]; /* Tx CO */ + info->rbpr = baud_bpr[DefSpeed]; /* Rx BPR */ + info->rco = baud_co[DefSpeed] >> 5; /* Rx CO */ + info->close_delay = 0; + info->x_char = 0; + info->count = 0; +#ifdef SERIAL_DEBUG_COUNT + printk("cyc: %d: setting count to 0\n", + __LINE__); +#endif + info->blocked_open = 0; + info->default_threshold = 0; + info->default_timeout = 0; + init_waitqueue_head(&info->open_wait); + init_waitqueue_head(&info->close_wait); + /* info->session */ + /* info->pgrp */ +/*** !!!!!!!! this may expose new bugs !!!!!!!!! *********/ + info->read_status_mask = + CyTIMEOUT | CySPECHAR | CyBREAK | CyPARITY | + CyFRAME | CyOVERRUN; + /* info->timeout */ + + printk("ttyS%d ", info->line); + port_num++; + info++; + if (!(port_num & 7)) { + printk("\n "); + } + } + } + printk("\n"); + } + while (port_num < NR_PORTS) { + info->line = -1; + port_num++; + info++; + } + + ret = request_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt, 0, + "cd2401_errors", cd2401_rxerr_interrupt); + if (ret) { + printk(KERN_ERR "Could't get cd2401_errors IRQ"); + goto cleanup_serial_driver; + } + + ret = request_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt, 0, + "cd2401_modem", cd2401_modem_interrupt); + if (ret) { + printk(KERN_ERR "Could't get cd2401_modem IRQ"); + goto cleanup_irq_cd2401_errors; + } + + ret = request_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt, 0, + "cd2401_txints", cd2401_tx_interrupt); + if (ret) { + printk(KERN_ERR "Could't get cd2401_txints IRQ"); + goto cleanup_irq_cd2401_modem; + } + + ret = request_irq(MVME167_IRQ_SER_RX, cd2401_rx_interrupt, 0, + "cd2401_rxints", cd2401_rx_interrupt); + if (ret) { + printk(KERN_ERR "Could't get cd2401_rxints IRQ"); + goto cleanup_irq_cd2401_txints; + } + + /* Now we have registered the interrupt handlers, allow the interrupts */ + + pcc2chip[PccSCCMICR] = 0x15; /* Serial ints are level 5 */ + pcc2chip[PccSCCTICR] = 0x15; + pcc2chip[PccSCCRICR] = 0x15; + + pcc2chip[PccIMLR] = 3; /* Allow PCC2 ints above 3!? */ + + return 0; +cleanup_irq_cd2401_txints: + free_irq(MVME167_IRQ_SER_TX, cd2401_tx_interrupt); +cleanup_irq_cd2401_modem: + free_irq(MVME167_IRQ_SER_MODEM, cd2401_modem_interrupt); +cleanup_irq_cd2401_errors: + free_irq(MVME167_IRQ_SER_ERR, cd2401_rxerr_interrupt); +cleanup_serial_driver: + if (tty_unregister_driver(cy_serial_driver)) + printk(KERN_ERR + "Couldn't unregister MVME166/7 serial driver\n"); + put_tty_driver(cy_serial_driver); + return ret; +} /* serial167_init */ + +module_init(serial167_init); + +#ifdef CYCLOM_SHOW_STATUS +static void show_status(int line_num) +{ + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + int channel; + struct cyclades_port *info; + unsigned long flags; + + info = &cy_port[line_num]; + channel = info->line; + printk(" channel %d\n", channel); + /**/ printk(" cy_port\n"); + printk(" card line flags = %d %d %x\n", + info->card, info->line, info->flags); + printk + (" *tty read_status_mask timeout xmit_fifo_size = %lx %x %x %x\n", + (long)info->tty, info->read_status_mask, info->timeout, + info->xmit_fifo_size); + printk(" cor1,cor2,cor3,cor4,cor5,cor6,cor7 = %x %x %x %x %x %x %x\n", + info->cor1, info->cor2, info->cor3, info->cor4, info->cor5, + info->cor6, info->cor7); + printk(" tbpr,tco,rbpr,rco = %d %d %d %d\n", info->tbpr, info->tco, + info->rbpr, info->rco); + printk(" close_delay event count = %d %d %d\n", info->close_delay, + info->event, info->count); + printk(" x_char blocked_open = %x %x\n", info->x_char, + info->blocked_open); + printk(" open_wait = %lx %lx %lx\n", (long)info->open_wait); + + local_irq_save(flags); + +/* Global Registers */ + + printk(" CyGFRCR %x\n", base_addr[CyGFRCR]); + printk(" CyCAR %x\n", base_addr[CyCAR]); + printk(" CyRISR %x\n", base_addr[CyRISR]); + printk(" CyTISR %x\n", base_addr[CyTISR]); + printk(" CyMISR %x\n", base_addr[CyMISR]); + printk(" CyRIR %x\n", base_addr[CyRIR]); + printk(" CyTIR %x\n", base_addr[CyTIR]); + printk(" CyMIR %x\n", base_addr[CyMIR]); + printk(" CyTPR %x\n", base_addr[CyTPR]); + + base_addr[CyCAR] = (u_char) channel; + +/* Virtual Registers */ + +#if 0 + printk(" CyRIVR %x\n", base_addr[CyRIVR]); + printk(" CyTIVR %x\n", base_addr[CyTIVR]); + printk(" CyMIVR %x\n", base_addr[CyMIVR]); + printk(" CyMISR %x\n", base_addr[CyMISR]); +#endif + +/* Channel Registers */ + + printk(" CyCCR %x\n", base_addr[CyCCR]); + printk(" CyIER %x\n", base_addr[CyIER]); + printk(" CyCOR1 %x\n", base_addr[CyCOR1]); + printk(" CyCOR2 %x\n", base_addr[CyCOR2]); + printk(" CyCOR3 %x\n", base_addr[CyCOR3]); + printk(" CyCOR4 %x\n", base_addr[CyCOR4]); + printk(" CyCOR5 %x\n", base_addr[CyCOR5]); +#if 0 + printk(" CyCCSR %x\n", base_addr[CyCCSR]); + printk(" CyRDCR %x\n", base_addr[CyRDCR]); +#endif + printk(" CySCHR1 %x\n", base_addr[CySCHR1]); + printk(" CySCHR2 %x\n", base_addr[CySCHR2]); +#if 0 + printk(" CySCHR3 %x\n", base_addr[CySCHR3]); + printk(" CySCHR4 %x\n", base_addr[CySCHR4]); + printk(" CySCRL %x\n", base_addr[CySCRL]); + printk(" CySCRH %x\n", base_addr[CySCRH]); + printk(" CyLNC %x\n", base_addr[CyLNC]); + printk(" CyMCOR1 %x\n", base_addr[CyMCOR1]); + printk(" CyMCOR2 %x\n", base_addr[CyMCOR2]); +#endif + printk(" CyRTPRL %x\n", base_addr[CyRTPRL]); + printk(" CyRTPRH %x\n", base_addr[CyRTPRH]); + printk(" CyMSVR1 %x\n", base_addr[CyMSVR1]); + printk(" CyMSVR2 %x\n", base_addr[CyMSVR2]); + printk(" CyRBPR %x\n", base_addr[CyRBPR]); + printk(" CyRCOR %x\n", base_addr[CyRCOR]); + printk(" CyTBPR %x\n", base_addr[CyTBPR]); + printk(" CyTCOR %x\n", base_addr[CyTCOR]); + + local_irq_restore(flags); +} /* show_status */ +#endif + +#if 0 +/* Dummy routine in mvme16x/config.c for now */ + +/* Serial console setup. Called from linux/init/main.c */ + +void console_setup(char *str, int *ints) +{ + char *s; + int baud, bits, parity; + int cflag = 0; + + /* Sanity check. */ + if (ints[0] > 3 || ints[1] > 3) + return; + + /* Get baud, bits and parity */ + baud = 2400; + bits = 8; + parity = 'n'; + if (ints[2]) + baud = ints[2]; + if ((s = strchr(str, ','))) { + do { + s++; + } while (*s >= '0' && *s <= '9'); + if (*s) + parity = *s++; + if (*s) + bits = *s - '0'; + } + + /* Now construct a cflag setting. */ + switch (baud) { + case 1200: + cflag |= B1200; + break; + case 9600: + cflag |= B9600; + break; + case 19200: + cflag |= B19200; + break; + case 38400: + cflag |= B38400; + break; + case 2400: + default: + cflag |= B2400; + break; + } + switch (bits) { + case 7: + cflag |= CS7; + break; + default: + case 8: + cflag |= CS8; + break; + } + switch (parity) { + case 'o': + case 'O': + cflag |= PARODD; + break; + case 'e': + case 'E': + cflag |= PARENB; + break; + } + + serial_console_info = &cy_port[ints[1]]; + serial_console_cflag = cflag; + serial_console = ints[1] + 64; /*callout_driver.minor_start */ +} +#endif + +/* + * The following is probably out of date for 2.1.x serial console stuff. + * + * The console is registered early on from arch/m68k/kernel/setup.c, and + * it therefore relies on the chip being setup correctly by 166-Bug. This + * seems reasonable, as the serial port has been used to invoke the system + * boot. It also means that this function must not rely on any data + * initialisation performed by serial167_init() etc. + * + * Of course, once the console has been registered, we had better ensure + * that serial167_init() doesn't leave the chip non-functional. + * + * The console must be locked when we get here. + */ + +void serial167_console_write(struct console *co, const char *str, + unsigned count) +{ + volatile unsigned char *base_addr = (u_char *) BASE_ADDR; + unsigned long flags; + volatile u_char sink; + u_char ier; + int port; + u_char do_lf = 0; + int i = 0; + + local_irq_save(flags); + + /* Ensure transmitter is enabled! */ + + port = 0; + base_addr[CyCAR] = (u_char) port; + while (base_addr[CyCCR]) + ; + base_addr[CyCCR] = CyENB_XMTR; + + ier = base_addr[CyIER]; + base_addr[CyIER] = CyTxMpty; + + while (1) { + if (pcc2chip[PccSCCTICR] & 0x20) { + /* We have a Tx int. Acknowledge it */ + sink = pcc2chip[PccTPIACKR]; + if ((base_addr[CyLICR] >> 2) == port) { + if (i == count) { + /* Last char of string is now output */ + base_addr[CyTEOIR] = CyNOTRANS; + break; + } + if (do_lf) { + base_addr[CyTDR] = '\n'; + str++; + i++; + do_lf = 0; + } else if (*str == '\n') { + base_addr[CyTDR] = '\r'; + do_lf = 1; + } else { + base_addr[CyTDR] = *str++; + i++; + } + base_addr[CyTEOIR] = 0; + } else + base_addr[CyTEOIR] = CyNOTRANS; + } + } + + base_addr[CyIER] = ier; + + local_irq_restore(flags); +} + +static struct tty_driver *serial167_console_device(struct console *c, + int *index) +{ + *index = c->index; + return cy_serial_driver; +} + +static struct console sercons = { + .name = "ttyS", + .write = serial167_console_write, + .device = serial167_console_device, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +static int __init serial167_console_init(void) +{ + if (vme_brdtype == VME_TYPE_MVME166 || + vme_brdtype == VME_TYPE_MVME167 || + vme_brdtype == VME_TYPE_MVME177) { + mvme167_serial_console_setup(0); + register_console(&sercons); + } + return 0; +} + +console_initcall(serial167_console_init); + +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/tty/specialix.c b/drivers/staging/tty/specialix.c new file mode 100644 index 000000000000..47e5753f732a --- /dev/null +++ b/drivers/staging/tty/specialix.c @@ -0,0 +1,2368 @@ +/* + * specialix.c -- specialix IO8+ multiport serial driver. + * + * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl) + * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) + * + * Specialix pays for the development and support of this driver. + * Please DO contact io8-linux@specialix.co.uk if you require + * support. But please read the documentation (specialix.txt) + * first. + * + * This driver was developped in the BitWizard linux device + * driver service. If you require a linux device driver for your + * product, please contact devices@BitWizard.nl for a quote. + * + * This code is firmly based on the riscom/8 serial driver, + * written by Dmitry Gorodchanin. The specialix IO8+ card + * programming information was obtained from the CL-CD1865 Data + * Book, and Specialix document number 6200059: IO8+ Hardware + * Functional Specification. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be + * useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, + * USA. + * + * Revision history: + * + * Revision 1.0: April 1st 1997. + * Initial release for alpha testing. + * Revision 1.1: April 14th 1997. + * Incorporated Richard Hudsons suggestions, + * removed some debugging printk's. + * Revision 1.2: April 15th 1997. + * Ported to 2.1.x kernels. + * Revision 1.3: April 17th 1997 + * Backported to 2.0. (Compatibility macros). + * Revision 1.4: April 18th 1997 + * Fixed DTR/RTS bug that caused the card to indicate + * "don't send data" to a modem after the password prompt. + * Fixed bug for premature (fake) interrupts. + * Revision 1.5: April 19th 1997 + * fixed a minor typo in the header file, cleanup a little. + * performance warnings are now MAXed at once per minute. + * Revision 1.6: May 23 1997 + * Changed the specialix=... format to include interrupt. + * Revision 1.7: May 27 1997 + * Made many more debug printk's a compile time option. + * Revision 1.8: Jul 1 1997 + * port to linux-2.1.43 kernel. + * Revision 1.9: Oct 9 1998 + * Added stuff for the IO8+/PCI version. + * Revision 1.10: Oct 22 1999 / Jan 21 2000. + * Added stuff for setserial. + * Nicolas Mailhot (Nicolas.Mailhot@email.enst.fr) + * + */ + +#define VERSION "1.11" + + +/* + * There is a bunch of documentation about the card, jumpers, config + * settings, restrictions, cables, device names and numbers in + * Documentation/serial/specialix.txt + */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "specialix_io8.h" +#include "cd1865.h" + + +/* + This driver can spew a whole lot of debugging output at you. If you + need maximum performance, you should disable the DEBUG define. To + aid in debugging in the field, I'm leaving the compile-time debug + features enabled, and disable them "runtime". That allows me to + instruct people with problems to enable debugging without requiring + them to recompile... +*/ +#define DEBUG + +static int sx_debug; +static int sx_rxfifo = SPECIALIX_RXFIFO; +static int sx_rtscts; + +#ifdef DEBUG +#define dprintk(f, str...) if (sx_debug & f) printk(str) +#else +#define dprintk(f, str...) /* nothing */ +#endif + +#define SX_DEBUG_FLOW 0x0001 +#define SX_DEBUG_DATA 0x0002 +#define SX_DEBUG_PROBE 0x0004 +#define SX_DEBUG_CHAN 0x0008 +#define SX_DEBUG_INIT 0x0010 +#define SX_DEBUG_RX 0x0020 +#define SX_DEBUG_TX 0x0040 +#define SX_DEBUG_IRQ 0x0080 +#define SX_DEBUG_OPEN 0x0100 +#define SX_DEBUG_TERMIOS 0x0200 +#define SX_DEBUG_SIGNALS 0x0400 +#define SX_DEBUG_FIFO 0x0800 + + +#define func_enter() dprintk(SX_DEBUG_FLOW, "io8: enter %s\n", __func__) +#define func_exit() dprintk(SX_DEBUG_FLOW, "io8: exit %s\n", __func__) + + +/* Configurable options: */ + +/* Am I paranoid or not ? ;-) */ +#define SPECIALIX_PARANOIA_CHECK + +/* + * The following defines are mostly for testing purposes. But if you need + * some nice reporting in your syslog, you can define them also. + */ +#undef SX_REPORT_FIFO +#undef SX_REPORT_OVERRUN + + + + +#define SPECIALIX_LEGAL_FLAGS \ + (ASYNC_HUP_NOTIFY | ASYNC_SAK | ASYNC_SPLIT_TERMIOS | \ + ASYNC_SPD_HI | ASYNC_SPEED_VHI | ASYNC_SESSION_LOCKOUT | \ + ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP) + +static struct tty_driver *specialix_driver; + +static struct specialix_board sx_board[SX_NBOARD] = { + { 0, SX_IOBASE1, 9, }, + { 0, SX_IOBASE2, 11, }, + { 0, SX_IOBASE3, 12, }, + { 0, SX_IOBASE4, 15, }, +}; + +static struct specialix_port sx_port[SX_NBOARD * SX_NPORT]; + + +static int sx_paranoia_check(struct specialix_port const *port, + char *name, const char *routine) +{ +#ifdef SPECIALIX_PARANOIA_CHECK + static const char *badmagic = KERN_ERR + "sx: Warning: bad specialix port magic number for device %s in %s\n"; + static const char *badinfo = KERN_ERR + "sx: Warning: null specialix port for device %s in %s\n"; + + if (!port) { + printk(badinfo, name, routine); + return 1; + } + if (port->magic != SPECIALIX_MAGIC) { + printk(badmagic, name, routine); + return 1; + } +#endif + return 0; +} + + +/* + * + * Service functions for specialix IO8+ driver. + * + */ + +/* Get board number from pointer */ +static inline int board_No(struct specialix_board *bp) +{ + return bp - sx_board; +} + + +/* Get port number from pointer */ +static inline int port_No(struct specialix_port const *port) +{ + return SX_PORT(port - sx_port); +} + + +/* Get pointer to board from pointer to port */ +static inline struct specialix_board *port_Board( + struct specialix_port const *port) +{ + return &sx_board[SX_BOARD(port - sx_port)]; +} + + +/* Input Byte from CL CD186x register */ +static inline unsigned char sx_in(struct specialix_board *bp, + unsigned short reg) +{ + bp->reg = reg | 0x80; + outb(reg | 0x80, bp->base + SX_ADDR_REG); + return inb(bp->base + SX_DATA_REG); +} + + +/* Output Byte to CL CD186x register */ +static inline void sx_out(struct specialix_board *bp, unsigned short reg, + unsigned char val) +{ + bp->reg = reg | 0x80; + outb(reg | 0x80, bp->base + SX_ADDR_REG); + outb(val, bp->base + SX_DATA_REG); +} + + +/* Input Byte from CL CD186x register */ +static inline unsigned char sx_in_off(struct specialix_board *bp, + unsigned short reg) +{ + bp->reg = reg; + outb(reg, bp->base + SX_ADDR_REG); + return inb(bp->base + SX_DATA_REG); +} + + +/* Output Byte to CL CD186x register */ +static inline void sx_out_off(struct specialix_board *bp, + unsigned short reg, unsigned char val) +{ + bp->reg = reg; + outb(reg, bp->base + SX_ADDR_REG); + outb(val, bp->base + SX_DATA_REG); +} + + +/* Wait for Channel Command Register ready */ +static void sx_wait_CCR(struct specialix_board *bp) +{ + unsigned long delay, flags; + unsigned char ccr; + + for (delay = SX_CCR_TIMEOUT; delay; delay--) { + spin_lock_irqsave(&bp->lock, flags); + ccr = sx_in(bp, CD186x_CCR); + spin_unlock_irqrestore(&bp->lock, flags); + if (!ccr) + return; + udelay(1); + } + + printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp)); +} + + +/* Wait for Channel Command Register ready */ +static void sx_wait_CCR_off(struct specialix_board *bp) +{ + unsigned long delay; + unsigned char crr; + unsigned long flags; + + for (delay = SX_CCR_TIMEOUT; delay; delay--) { + spin_lock_irqsave(&bp->lock, flags); + crr = sx_in_off(bp, CD186x_CCR); + spin_unlock_irqrestore(&bp->lock, flags); + if (!crr) + return; + udelay(1); + } + + printk(KERN_ERR "sx%d: Timeout waiting for CCR.\n", board_No(bp)); +} + + +/* + * specialix IO8+ IO range functions. + */ + +static int sx_request_io_range(struct specialix_board *bp) +{ + return request_region(bp->base, + bp->flags & SX_BOARD_IS_PCI ? SX_PCI_IO_SPACE : SX_IO_SPACE, + "specialix IO8+") == NULL; +} + + +static void sx_release_io_range(struct specialix_board *bp) +{ + release_region(bp->base, bp->flags & SX_BOARD_IS_PCI ? + SX_PCI_IO_SPACE : SX_IO_SPACE); +} + + +/* Set the IRQ using the RTS lines that run to the PAL on the board.... */ +static int sx_set_irq(struct specialix_board *bp) +{ + int virq; + int i; + unsigned long flags; + + if (bp->flags & SX_BOARD_IS_PCI) + return 1; + switch (bp->irq) { + /* In the same order as in the docs... */ + case 15: + virq = 0; + break; + case 12: + virq = 1; + break; + case 11: + virq = 2; + break; + case 9: + virq = 3; + break; + default:printk(KERN_ERR + "Speclialix: cannot set irq to %d.\n", bp->irq); + return 0; + } + spin_lock_irqsave(&bp->lock, flags); + for (i = 0; i < 2; i++) { + sx_out(bp, CD186x_CAR, i); + sx_out(bp, CD186x_MSVRTS, ((virq >> i) & 0x1)? MSVR_RTS:0); + } + spin_unlock_irqrestore(&bp->lock, flags); + return 1; +} + + +/* Reset and setup CD186x chip */ +static int sx_init_CD186x(struct specialix_board *bp) +{ + unsigned long flags; + int scaler; + int rv = 1; + + func_enter(); + sx_wait_CCR_off(bp); /* Wait for CCR ready */ + spin_lock_irqsave(&bp->lock, flags); + sx_out_off(bp, CD186x_CCR, CCR_HARDRESET); /* Reset CD186x chip */ + spin_unlock_irqrestore(&bp->lock, flags); + msleep(50); /* Delay 0.05 sec */ + spin_lock_irqsave(&bp->lock, flags); + sx_out_off(bp, CD186x_GIVR, SX_ID); /* Set ID for this chip */ + sx_out_off(bp, CD186x_GICR, 0); /* Clear all bits */ + sx_out_off(bp, CD186x_PILR1, SX_ACK_MINT); /* Prio for modem intr */ + sx_out_off(bp, CD186x_PILR2, SX_ACK_TINT); /* Prio for transmitter intr */ + sx_out_off(bp, CD186x_PILR3, SX_ACK_RINT); /* Prio for receiver intr */ + /* Set RegAckEn */ + sx_out_off(bp, CD186x_SRCR, sx_in(bp, CD186x_SRCR) | SRCR_REGACKEN); + + /* Setting up prescaler. We need 4 ticks per 1 ms */ + scaler = SX_OSCFREQ/SPECIALIX_TPS; + + sx_out_off(bp, CD186x_PPRH, scaler >> 8); + sx_out_off(bp, CD186x_PPRL, scaler & 0xff); + spin_unlock_irqrestore(&bp->lock, flags); + + if (!sx_set_irq(bp)) { + /* Figure out how to pass this along... */ + printk(KERN_ERR "Cannot set irq to %d.\n", bp->irq); + rv = 0; + } + + func_exit(); + return rv; +} + + +static int read_cross_byte(struct specialix_board *bp, int reg, int bit) +{ + int i; + int t; + unsigned long flags; + + spin_lock_irqsave(&bp->lock, flags); + for (i = 0, t = 0; i < 8; i++) { + sx_out_off(bp, CD186x_CAR, i); + if (sx_in_off(bp, reg) & bit) + t |= 1 << i; + } + spin_unlock_irqrestore(&bp->lock, flags); + + return t; +} + + +/* Main probing routine, also sets irq. */ +static int sx_probe(struct specialix_board *bp) +{ + unsigned char val1, val2; + int rev; + int chip; + + func_enter(); + + if (sx_request_io_range(bp)) { + func_exit(); + return 1; + } + + /* Are the I/O ports here ? */ + sx_out_off(bp, CD186x_PPRL, 0x5a); + udelay(1); + val1 = sx_in_off(bp, CD186x_PPRL); + + sx_out_off(bp, CD186x_PPRL, 0xa5); + udelay(1); + val2 = sx_in_off(bp, CD186x_PPRL); + + + if (val1 != 0x5a || val2 != 0xa5) { + printk(KERN_INFO + "sx%d: specialix IO8+ Board at 0x%03x not found.\n", + board_No(bp), bp->base); + sx_release_io_range(bp); + func_exit(); + return 1; + } + + /* Check the DSR lines that Specialix uses as board + identification */ + val1 = read_cross_byte(bp, CD186x_MSVR, MSVR_DSR); + val2 = read_cross_byte(bp, CD186x_MSVR, MSVR_RTS); + dprintk(SX_DEBUG_INIT, + "sx%d: DSR lines are: %02x, rts lines are: %02x\n", + board_No(bp), val1, val2); + + /* They managed to switch the bit order between the docs and + the IO8+ card. The new PCI card now conforms to old docs. + They changed the PCI docs to reflect the situation on the + old card. */ + val2 = (bp->flags & SX_BOARD_IS_PCI)?0x4d : 0xb2; + if (val1 != val2) { + printk(KERN_INFO + "sx%d: specialix IO8+ ID %02x at 0x%03x not found (%02x).\n", + board_No(bp), val2, bp->base, val1); + sx_release_io_range(bp); + func_exit(); + return 1; + } + + + /* Reset CD186x again */ + if (!sx_init_CD186x(bp)) { + sx_release_io_range(bp); + func_exit(); + return 1; + } + + sx_request_io_range(bp); + bp->flags |= SX_BOARD_PRESENT; + + /* Chip revcode pkgtype + GFRCR SRCR bit 7 + CD180 rev B 0x81 0 + CD180 rev C 0x82 0 + CD1864 rev A 0x82 1 + CD1865 rev A 0x83 1 -- Do not use!!! Does not work. + CD1865 rev B 0x84 1 + -- Thanks to Gwen Wang, Cirrus Logic. + */ + + switch (sx_in_off(bp, CD186x_GFRCR)) { + case 0x82: + chip = 1864; + rev = 'A'; + break; + case 0x83: + chip = 1865; + rev = 'A'; + break; + case 0x84: + chip = 1865; + rev = 'B'; + break; + case 0x85: + chip = 1865; + rev = 'C'; + break; /* Does not exist at this time */ + default: + chip = -1; + rev = 'x'; + } + + dprintk(SX_DEBUG_INIT, " GFCR = 0x%02x\n", sx_in_off(bp, CD186x_GFRCR)); + + printk(KERN_INFO + "sx%d: specialix IO8+ board detected at 0x%03x, IRQ %d, CD%d Rev. %c.\n", + board_No(bp), bp->base, bp->irq, chip, rev); + + func_exit(); + return 0; +} + +/* + * + * Interrupt processing routines. + * */ + +static struct specialix_port *sx_get_port(struct specialix_board *bp, + unsigned char const *what) +{ + unsigned char channel; + struct specialix_port *port = NULL; + + channel = sx_in(bp, CD186x_GICR) >> GICR_CHAN_OFF; + dprintk(SX_DEBUG_CHAN, "channel: %d\n", channel); + if (channel < CD186x_NCH) { + port = &sx_port[board_No(bp) * SX_NPORT + channel]; + dprintk(SX_DEBUG_CHAN, "port: %d %p flags: 0x%lx\n", + board_No(bp) * SX_NPORT + channel, port, + port->port.flags & ASYNC_INITIALIZED); + + if (port->port.flags & ASYNC_INITIALIZED) { + dprintk(SX_DEBUG_CHAN, "port: %d %p\n", channel, port); + func_exit(); + return port; + } + } + printk(KERN_INFO "sx%d: %s interrupt from invalid port %d\n", + board_No(bp), what, channel); + return NULL; +} + + +static void sx_receive_exc(struct specialix_board *bp) +{ + struct specialix_port *port; + struct tty_struct *tty; + unsigned char status; + unsigned char ch, flag; + + func_enter(); + + port = sx_get_port(bp, "Receive"); + if (!port) { + dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n"); + func_exit(); + return; + } + tty = port->port.tty; + + status = sx_in(bp, CD186x_RCSR); + + dprintk(SX_DEBUG_RX, "status: 0x%x\n", status); + if (status & RCSR_OE) { + port->overrun++; + dprintk(SX_DEBUG_FIFO, + "sx%d: port %d: Overrun. Total %ld overruns.\n", + board_No(bp), port_No(port), port->overrun); + } + status &= port->mark_mask; + + /* This flip buffer check needs to be below the reading of the + status register to reset the chip's IRQ.... */ + if (tty_buffer_request_room(tty, 1) == 0) { + dprintk(SX_DEBUG_FIFO, + "sx%d: port %d: Working around flip buffer overflow.\n", + board_No(bp), port_No(port)); + func_exit(); + return; + } + + ch = sx_in(bp, CD186x_RDR); + if (!status) { + func_exit(); + return; + } + if (status & RCSR_TOUT) { + printk(KERN_INFO + "sx%d: port %d: Receiver timeout. Hardware problems ?\n", + board_No(bp), port_No(port)); + func_exit(); + return; + + } else if (status & RCSR_BREAK) { + dprintk(SX_DEBUG_RX, "sx%d: port %d: Handling break...\n", + board_No(bp), port_No(port)); + flag = TTY_BREAK; + if (port->port.flags & ASYNC_SAK) + do_SAK(tty); + + } else if (status & RCSR_PE) + flag = TTY_PARITY; + + else if (status & RCSR_FE) + flag = TTY_FRAME; + + else if (status & RCSR_OE) + flag = TTY_OVERRUN; + + else + flag = TTY_NORMAL; + + if (tty_insert_flip_char(tty, ch, flag)) + tty_flip_buffer_push(tty); + func_exit(); +} + + +static void sx_receive(struct specialix_board *bp) +{ + struct specialix_port *port; + struct tty_struct *tty; + unsigned char count; + + func_enter(); + + port = sx_get_port(bp, "Receive"); + if (port == NULL) { + dprintk(SX_DEBUG_RX, "Hmm, couldn't find port.\n"); + func_exit(); + return; + } + tty = port->port.tty; + + count = sx_in(bp, CD186x_RDCR); + dprintk(SX_DEBUG_RX, "port: %p: count: %d\n", port, count); + port->hits[count > 8 ? 9 : count]++; + + while (count--) + tty_insert_flip_char(tty, sx_in(bp, CD186x_RDR), TTY_NORMAL); + tty_flip_buffer_push(tty); + func_exit(); +} + + +static void sx_transmit(struct specialix_board *bp) +{ + struct specialix_port *port; + struct tty_struct *tty; + unsigned char count; + + func_enter(); + port = sx_get_port(bp, "Transmit"); + if (port == NULL) { + func_exit(); + return; + } + dprintk(SX_DEBUG_TX, "port: %p\n", port); + tty = port->port.tty; + + if (port->IER & IER_TXEMPTY) { + /* FIFO drained */ + sx_out(bp, CD186x_CAR, port_No(port)); + port->IER &= ~IER_TXEMPTY; + sx_out(bp, CD186x_IER, port->IER); + func_exit(); + return; + } + + if ((port->xmit_cnt <= 0 && !port->break_length) + || tty->stopped || tty->hw_stopped) { + sx_out(bp, CD186x_CAR, port_No(port)); + port->IER &= ~IER_TXRDY; + sx_out(bp, CD186x_IER, port->IER); + func_exit(); + return; + } + + if (port->break_length) { + if (port->break_length > 0) { + if (port->COR2 & COR2_ETC) { + sx_out(bp, CD186x_TDR, CD186x_C_ESC); + sx_out(bp, CD186x_TDR, CD186x_C_SBRK); + port->COR2 &= ~COR2_ETC; + } + count = min_t(int, port->break_length, 0xff); + sx_out(bp, CD186x_TDR, CD186x_C_ESC); + sx_out(bp, CD186x_TDR, CD186x_C_DELAY); + sx_out(bp, CD186x_TDR, count); + port->break_length -= count; + if (port->break_length == 0) + port->break_length--; + } else { + sx_out(bp, CD186x_TDR, CD186x_C_ESC); + sx_out(bp, CD186x_TDR, CD186x_C_EBRK); + sx_out(bp, CD186x_COR2, port->COR2); + sx_wait_CCR(bp); + sx_out(bp, CD186x_CCR, CCR_CORCHG2); + port->break_length = 0; + } + + func_exit(); + return; + } + + count = CD186x_NFIFO; + do { + sx_out(bp, CD186x_TDR, port->xmit_buf[port->xmit_tail++]); + port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1); + if (--port->xmit_cnt <= 0) + break; + } while (--count > 0); + + if (port->xmit_cnt <= 0) { + sx_out(bp, CD186x_CAR, port_No(port)); + port->IER &= ~IER_TXRDY; + sx_out(bp, CD186x_IER, port->IER); + } + if (port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); + + func_exit(); +} + + +static void sx_check_modem(struct specialix_board *bp) +{ + struct specialix_port *port; + struct tty_struct *tty; + unsigned char mcr; + int msvr_cd; + + dprintk(SX_DEBUG_SIGNALS, "Modem intr. "); + port = sx_get_port(bp, "Modem"); + if (port == NULL) + return; + + tty = port->port.tty; + + mcr = sx_in(bp, CD186x_MCR); + + if ((mcr & MCR_CDCHG)) { + dprintk(SX_DEBUG_SIGNALS, "CD just changed... "); + msvr_cd = sx_in(bp, CD186x_MSVR) & MSVR_CD; + if (msvr_cd) { + dprintk(SX_DEBUG_SIGNALS, "Waking up guys in open.\n"); + wake_up_interruptible(&port->port.open_wait); + } else { + dprintk(SX_DEBUG_SIGNALS, "Sending HUP.\n"); + tty_hangup(tty); + } + } + +#ifdef SPECIALIX_BRAIN_DAMAGED_CTS + if (mcr & MCR_CTSCHG) { + if (sx_in(bp, CD186x_MSVR) & MSVR_CTS) { + tty->hw_stopped = 0; + port->IER |= IER_TXRDY; + if (port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); + } else { + tty->hw_stopped = 1; + port->IER &= ~IER_TXRDY; + } + sx_out(bp, CD186x_IER, port->IER); + } + if (mcr & MCR_DSSXHG) { + if (sx_in(bp, CD186x_MSVR) & MSVR_DSR) { + tty->hw_stopped = 0; + port->IER |= IER_TXRDY; + if (port->xmit_cnt <= port->wakeup_chars) + tty_wakeup(tty); + } else { + tty->hw_stopped = 1; + port->IER &= ~IER_TXRDY; + } + sx_out(bp, CD186x_IER, port->IER); + } +#endif /* SPECIALIX_BRAIN_DAMAGED_CTS */ + + /* Clear change bits */ + sx_out(bp, CD186x_MCR, 0); +} + + +/* The main interrupt processing routine */ +static irqreturn_t sx_interrupt(int dummy, void *dev_id) +{ + unsigned char status; + unsigned char ack; + struct specialix_board *bp = dev_id; + unsigned long loop = 0; + int saved_reg; + unsigned long flags; + + func_enter(); + + spin_lock_irqsave(&bp->lock, flags); + + dprintk(SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __func__, + port_No(sx_get_port(bp, "INT")), + SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1); + if (!(bp->flags & SX_BOARD_ACTIVE)) { + dprintk(SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", + bp->irq); + spin_unlock_irqrestore(&bp->lock, flags); + func_exit(); + return IRQ_NONE; + } + + saved_reg = bp->reg; + + while (++loop < 16) { + status = sx_in(bp, CD186x_SRSR) & + (SRSR_RREQint | SRSR_TREQint | SRSR_MREQint); + if (status == 0) + break; + if (status & SRSR_RREQint) { + ack = sx_in(bp, CD186x_RRAR); + + if (ack == (SX_ID | GIVR_IT_RCV)) + sx_receive(bp); + else if (ack == (SX_ID | GIVR_IT_REXC)) + sx_receive_exc(bp); + else + printk(KERN_ERR + "sx%d: status: 0x%x Bad receive ack 0x%02x.\n", + board_No(bp), status, ack); + + } else if (status & SRSR_TREQint) { + ack = sx_in(bp, CD186x_TRAR); + + if (ack == (SX_ID | GIVR_IT_TX)) + sx_transmit(bp); + else + printk(KERN_ERR "sx%d: status: 0x%x Bad transmit ack 0x%02x. port: %d\n", + board_No(bp), status, ack, + port_No(sx_get_port(bp, "Int"))); + } else if (status & SRSR_MREQint) { + ack = sx_in(bp, CD186x_MRAR); + + if (ack == (SX_ID | GIVR_IT_MODEM)) + sx_check_modem(bp); + else + printk(KERN_ERR + "sx%d: status: 0x%x Bad modem ack 0x%02x.\n", + board_No(bp), status, ack); + + } + + sx_out(bp, CD186x_EOIR, 0); /* Mark end of interrupt */ + } + bp->reg = saved_reg; + outb(bp->reg, bp->base + SX_ADDR_REG); + spin_unlock_irqrestore(&bp->lock, flags); + func_exit(); + return IRQ_HANDLED; +} + + +/* + * Routines for open & close processing. + */ + +static void turn_ints_off(struct specialix_board *bp) +{ + unsigned long flags; + + func_enter(); + spin_lock_irqsave(&bp->lock, flags); + (void) sx_in_off(bp, 0); /* Turn off interrupts. */ + spin_unlock_irqrestore(&bp->lock, flags); + + func_exit(); +} + +static void turn_ints_on(struct specialix_board *bp) +{ + unsigned long flags; + + func_enter(); + + spin_lock_irqsave(&bp->lock, flags); + (void) sx_in(bp, 0); /* Turn ON interrupts. */ + spin_unlock_irqrestore(&bp->lock, flags); + + func_exit(); +} + + +/* Called with disabled interrupts */ +static int sx_setup_board(struct specialix_board *bp) +{ + int error; + + if (bp->flags & SX_BOARD_ACTIVE) + return 0; + + if (bp->flags & SX_BOARD_IS_PCI) + error = request_irq(bp->irq, sx_interrupt, + IRQF_DISABLED | IRQF_SHARED, "specialix IO8+", bp); + else + error = request_irq(bp->irq, sx_interrupt, + IRQF_DISABLED, "specialix IO8+", bp); + + if (error) + return error; + + turn_ints_on(bp); + bp->flags |= SX_BOARD_ACTIVE; + + return 0; +} + + +/* Called with disabled interrupts */ +static void sx_shutdown_board(struct specialix_board *bp) +{ + func_enter(); + + if (!(bp->flags & SX_BOARD_ACTIVE)) { + func_exit(); + return; + } + + bp->flags &= ~SX_BOARD_ACTIVE; + + dprintk(SX_DEBUG_IRQ, "Freeing IRQ%d for board %d.\n", + bp->irq, board_No(bp)); + free_irq(bp->irq, bp); + turn_ints_off(bp); + func_exit(); +} + +static unsigned int sx_crtscts(struct tty_struct *tty) +{ + if (sx_rtscts) + return C_CRTSCTS(tty); + return 1; +} + +/* + * Setting up port characteristics. + * Must be called with disabled interrupts + */ +static void sx_change_speed(struct specialix_board *bp, + struct specialix_port *port) +{ + struct tty_struct *tty; + unsigned long baud; + long tmp; + unsigned char cor1 = 0, cor3 = 0; + unsigned char mcor1 = 0, mcor2 = 0; + static unsigned long again; + unsigned long flags; + + func_enter(); + + tty = port->port.tty; + if (!tty || !tty->termios) { + func_exit(); + return; + } + + port->IER = 0; + port->COR2 = 0; + /* Select port on the board */ + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CAR, port_No(port)); + + /* The Specialix board doens't implement the RTS lines. + They are used to set the IRQ level. Don't touch them. */ + if (sx_crtscts(tty)) + port->MSVR = MSVR_DTR | (sx_in(bp, CD186x_MSVR) & MSVR_RTS); + else + port->MSVR = (sx_in(bp, CD186x_MSVR) & MSVR_RTS); + spin_unlock_irqrestore(&bp->lock, flags); + dprintk(SX_DEBUG_TERMIOS, "sx: got MSVR=%02x.\n", port->MSVR); + baud = tty_get_baud_rate(tty); + + if (baud == 38400) { + if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + baud = 57600; + if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + baud = 115200; + } + + if (!baud) { + /* Drop DTR & exit */ + dprintk(SX_DEBUG_TERMIOS, "Dropping DTR... Hmm....\n"); + if (!sx_crtscts(tty)) { + port->MSVR &= ~MSVR_DTR; + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_MSVR, port->MSVR); + spin_unlock_irqrestore(&bp->lock, flags); + } else + dprintk(SX_DEBUG_TERMIOS, "Can't drop DTR: no DTR.\n"); + return; + } else { + /* Set DTR on */ + if (!sx_crtscts(tty)) + port->MSVR |= MSVR_DTR; + } + + /* + * Now we must calculate some speed depended things + */ + + /* Set baud rate for port */ + tmp = port->custom_divisor ; + if (tmp) + printk(KERN_INFO + "sx%d: Using custom baud rate divisor %ld. \n" + "This is an untested option, please be careful.\n", + port_No(port), tmp); + else + tmp = (((SX_OSCFREQ + baud/2) / baud + CD186x_TPC/2) / + CD186x_TPC); + + if (tmp < 0x10 && time_before(again, jiffies)) { + again = jiffies + HZ * 60; + /* Page 48 of version 2.0 of the CL-CD1865 databook */ + if (tmp >= 12) { + printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n" + "Performance degradation is possible.\n" + "Read specialix.txt for more info.\n", + port_No(port), tmp); + } else { + printk(KERN_INFO "sx%d: Baud rate divisor is %ld. \n" + "Warning: overstressing Cirrus chip. This might not work.\n" + "Read specialix.txt for more info.\n", port_No(port), tmp); + } + } + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_RBPRH, (tmp >> 8) & 0xff); + sx_out(bp, CD186x_TBPRH, (tmp >> 8) & 0xff); + sx_out(bp, CD186x_RBPRL, tmp & 0xff); + sx_out(bp, CD186x_TBPRL, tmp & 0xff); + spin_unlock_irqrestore(&bp->lock, flags); + if (port->custom_divisor) + baud = (SX_OSCFREQ + port->custom_divisor/2) / + port->custom_divisor; + baud = (baud + 5) / 10; /* Estimated CPS */ + + /* Two timer ticks seems enough to wakeup something like SLIP driver */ + tmp = ((baud + HZ/2) / HZ) * 2 - CD186x_NFIFO; + port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ? + SERIAL_XMIT_SIZE - 1 : tmp); + + /* Receiver timeout will be transmission time for 1.5 chars */ + tmp = (SPECIALIX_TPS + SPECIALIX_TPS/2 + baud/2) / baud; + tmp = (tmp > 0xff) ? 0xff : tmp; + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_RTPR, tmp); + spin_unlock_irqrestore(&bp->lock, flags); + switch (C_CSIZE(tty)) { + case CS5: + cor1 |= COR1_5BITS; + break; + case CS6: + cor1 |= COR1_6BITS; + break; + case CS7: + cor1 |= COR1_7BITS; + break; + case CS8: + cor1 |= COR1_8BITS; + break; + } + + if (C_CSTOPB(tty)) + cor1 |= COR1_2SB; + + cor1 |= COR1_IGNORE; + if (C_PARENB(tty)) { + cor1 |= COR1_NORMPAR; + if (C_PARODD(tty)) + cor1 |= COR1_ODDP; + if (I_INPCK(tty)) + cor1 &= ~COR1_IGNORE; + } + /* Set marking of some errors */ + port->mark_mask = RCSR_OE | RCSR_TOUT; + if (I_INPCK(tty)) + port->mark_mask |= RCSR_FE | RCSR_PE; + if (I_BRKINT(tty) || I_PARMRK(tty)) + port->mark_mask |= RCSR_BREAK; + if (I_IGNPAR(tty)) + port->mark_mask &= ~(RCSR_FE | RCSR_PE); + if (I_IGNBRK(tty)) { + port->mark_mask &= ~RCSR_BREAK; + if (I_IGNPAR(tty)) + /* Real raw mode. Ignore all */ + port->mark_mask &= ~RCSR_OE; + } + /* Enable Hardware Flow Control */ + if (C_CRTSCTS(tty)) { +#ifdef SPECIALIX_BRAIN_DAMAGED_CTS + port->IER |= IER_DSR | IER_CTS; + mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD; + mcor2 |= MCOR2_DSROD | MCOR2_CTSOD; + spin_lock_irqsave(&bp->lock, flags); + tty->hw_stopped = !(sx_in(bp, CD186x_MSVR) & + (MSVR_CTS|MSVR_DSR)); + spin_unlock_irqrestore(&bp->lock, flags); +#else + port->COR2 |= COR2_CTSAE; +#endif + } + /* Enable Software Flow Control. FIXME: I'm not sure about this */ + /* Some people reported that it works, but I still doubt it */ + if (I_IXON(tty)) { + port->COR2 |= COR2_TXIBE; + cor3 |= (COR3_FCT | COR3_SCDE); + if (I_IXANY(tty)) + port->COR2 |= COR2_IXM; + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_SCHR1, START_CHAR(tty)); + sx_out(bp, CD186x_SCHR2, STOP_CHAR(tty)); + sx_out(bp, CD186x_SCHR3, START_CHAR(tty)); + sx_out(bp, CD186x_SCHR4, STOP_CHAR(tty)); + spin_unlock_irqrestore(&bp->lock, flags); + } + if (!C_CLOCAL(tty)) { + /* Enable CD check */ + port->IER |= IER_CD; + mcor1 |= MCOR1_CDZD; + mcor2 |= MCOR2_CDOD; + } + + if (C_CREAD(tty)) + /* Enable receiver */ + port->IER |= IER_RXD; + + /* Set input FIFO size (1-8 bytes) */ + cor3 |= sx_rxfifo; + /* Setting up CD186x channel registers */ + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_COR1, cor1); + sx_out(bp, CD186x_COR2, port->COR2); + sx_out(bp, CD186x_COR3, cor3); + spin_unlock_irqrestore(&bp->lock, flags); + /* Make CD186x know about registers change */ + sx_wait_CCR(bp); + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CCR, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3); + /* Setting up modem option registers */ + dprintk(SX_DEBUG_TERMIOS, "Mcor1 = %02x, mcor2 = %02x.\n", + mcor1, mcor2); + sx_out(bp, CD186x_MCOR1, mcor1); + sx_out(bp, CD186x_MCOR2, mcor2); + spin_unlock_irqrestore(&bp->lock, flags); + /* Enable CD186x transmitter & receiver */ + sx_wait_CCR(bp); + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CCR, CCR_TXEN | CCR_RXEN); + /* Enable interrupts */ + sx_out(bp, CD186x_IER, port->IER); + /* And finally set the modem lines... */ + sx_out(bp, CD186x_MSVR, port->MSVR); + spin_unlock_irqrestore(&bp->lock, flags); + + func_exit(); +} + + +/* Must be called with interrupts enabled */ +static int sx_setup_port(struct specialix_board *bp, + struct specialix_port *port) +{ + unsigned long flags; + + func_enter(); + + if (port->port.flags & ASYNC_INITIALIZED) { + func_exit(); + return 0; + } + + if (!port->xmit_buf) { + /* We may sleep in get_zeroed_page() */ + unsigned long tmp; + + tmp = get_zeroed_page(GFP_KERNEL); + if (tmp == 0L) { + func_exit(); + return -ENOMEM; + } + + if (port->xmit_buf) { + free_page(tmp); + func_exit(); + return -ERESTARTSYS; + } + port->xmit_buf = (unsigned char *) tmp; + } + + spin_lock_irqsave(&port->lock, flags); + + if (port->port.tty) + clear_bit(TTY_IO_ERROR, &port->port.tty->flags); + + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + sx_change_speed(bp, port); + port->port.flags |= ASYNC_INITIALIZED; + + spin_unlock_irqrestore(&port->lock, flags); + + + func_exit(); + return 0; +} + + +/* Must be called with interrupts disabled */ +static void sx_shutdown_port(struct specialix_board *bp, + struct specialix_port *port) +{ + struct tty_struct *tty; + int i; + unsigned long flags; + + func_enter(); + + if (!(port->port.flags & ASYNC_INITIALIZED)) { + func_exit(); + return; + } + + if (sx_debug & SX_DEBUG_FIFO) { + dprintk(SX_DEBUG_FIFO, + "sx%d: port %d: %ld overruns, FIFO hits [ ", + board_No(bp), port_No(port), port->overrun); + for (i = 0; i < 10; i++) + dprintk(SX_DEBUG_FIFO, "%ld ", port->hits[i]); + dprintk(SX_DEBUG_FIFO, "].\n"); + } + + if (port->xmit_buf) { + free_page((unsigned long) port->xmit_buf); + port->xmit_buf = NULL; + } + + /* Select port */ + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CAR, port_No(port)); + + tty = port->port.tty; + if (tty == NULL || C_HUPCL(tty)) { + /* Drop DTR */ + sx_out(bp, CD186x_MSVDTR, 0); + } + spin_unlock_irqrestore(&bp->lock, flags); + /* Reset port */ + sx_wait_CCR(bp); + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CCR, CCR_SOFTRESET); + /* Disable all interrupts from this port */ + port->IER = 0; + sx_out(bp, CD186x_IER, port->IER); + spin_unlock_irqrestore(&bp->lock, flags); + if (tty) + set_bit(TTY_IO_ERROR, &tty->flags); + port->port.flags &= ~ASYNC_INITIALIZED; + + if (!bp->count) + sx_shutdown_board(bp); + func_exit(); +} + + +static int block_til_ready(struct tty_struct *tty, struct file *filp, + struct specialix_port *port) +{ + DECLARE_WAITQUEUE(wait, current); + struct specialix_board *bp = port_Board(port); + int retval; + int do_clocal = 0; + int CD; + unsigned long flags; + + func_enter(); + + /* + * If the device is in the middle of being closed, then block + * until it's done, and then try again. + */ + if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) { + interruptible_sleep_on(&port->port.close_wait); + if (port->port.flags & ASYNC_HUP_NOTIFY) { + func_exit(); + return -EAGAIN; + } else { + func_exit(); + return -ERESTARTSYS; + } + } + + /* + * If non-blocking mode is set, or the port is not enabled, + * then make the check up front and then exit. + */ + if ((filp->f_flags & O_NONBLOCK) || + (tty->flags & (1 << TTY_IO_ERROR))) { + port->port.flags |= ASYNC_NORMAL_ACTIVE; + func_exit(); + return 0; + } + + if (C_CLOCAL(tty)) + do_clocal = 1; + + /* + * Block waiting for the carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, info->count is dropped by one, so that + * rs_close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + retval = 0; + add_wait_queue(&port->port.open_wait, &wait); + spin_lock_irqsave(&port->lock, flags); + if (!tty_hung_up_p(filp)) + port->port.count--; + spin_unlock_irqrestore(&port->lock, flags); + port->port.blocked_open++; + while (1) { + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CAR, port_No(port)); + CD = sx_in(bp, CD186x_MSVR) & MSVR_CD; + if (sx_crtscts(tty)) { + /* Activate RTS */ + port->MSVR |= MSVR_DTR; /* WTF? */ + sx_out(bp, CD186x_MSVR, port->MSVR); + } else { + /* Activate DTR */ + port->MSVR |= MSVR_DTR; + sx_out(bp, CD186x_MSVR, port->MSVR); + } + spin_unlock_irqrestore(&bp->lock, flags); + set_current_state(TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp) || + !(port->port.flags & ASYNC_INITIALIZED)) { + if (port->port.flags & ASYNC_HUP_NOTIFY) + retval = -EAGAIN; + else + retval = -ERESTARTSYS; + break; + } + if (!(port->port.flags & ASYNC_CLOSING) && + (do_clocal || CD)) + break; + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + tty_unlock(); + schedule(); + tty_lock(); + } + + set_current_state(TASK_RUNNING); + remove_wait_queue(&port->port.open_wait, &wait); + spin_lock_irqsave(&port->lock, flags); + if (!tty_hung_up_p(filp)) + port->port.count++; + port->port.blocked_open--; + spin_unlock_irqrestore(&port->lock, flags); + if (retval) { + func_exit(); + return retval; + } + + port->port.flags |= ASYNC_NORMAL_ACTIVE; + func_exit(); + return 0; +} + + +static int sx_open(struct tty_struct *tty, struct file *filp) +{ + int board; + int error; + struct specialix_port *port; + struct specialix_board *bp; + int i; + unsigned long flags; + + func_enter(); + + board = SX_BOARD(tty->index); + + if (board >= SX_NBOARD || !(sx_board[board].flags & SX_BOARD_PRESENT)) { + func_exit(); + return -ENODEV; + } + + bp = &sx_board[board]; + port = sx_port + board * SX_NPORT + SX_PORT(tty->index); + port->overrun = 0; + for (i = 0; i < 10; i++) + port->hits[i] = 0; + + dprintk(SX_DEBUG_OPEN, + "Board = %d, bp = %p, port = %p, portno = %d.\n", + board, bp, port, SX_PORT(tty->index)); + + if (sx_paranoia_check(port, tty->name, "sx_open")) { + func_enter(); + return -ENODEV; + } + + error = sx_setup_board(bp); + if (error) { + func_exit(); + return error; + } + + spin_lock_irqsave(&bp->lock, flags); + port->port.count++; + bp->count++; + tty->driver_data = port; + port->port.tty = tty; + spin_unlock_irqrestore(&bp->lock, flags); + + error = sx_setup_port(bp, port); + if (error) { + func_enter(); + return error; + } + + error = block_til_ready(tty, filp, port); + if (error) { + func_enter(); + return error; + } + + func_exit(); + return 0; +} + +static void sx_flush_buffer(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + unsigned long flags; + struct specialix_board *bp; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) { + func_exit(); + return; + } + + bp = port_Board(port); + spin_lock_irqsave(&port->lock, flags); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore(&port->lock, flags); + tty_wakeup(tty); + + func_exit(); +} + +static void sx_close(struct tty_struct *tty, struct file *filp) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + unsigned long flags; + unsigned long timeout; + + func_enter(); + if (!port || sx_paranoia_check(port, tty->name, "close")) { + func_exit(); + return; + } + spin_lock_irqsave(&port->lock, flags); + + if (tty_hung_up_p(filp)) { + spin_unlock_irqrestore(&port->lock, flags); + func_exit(); + return; + } + + bp = port_Board(port); + if (tty->count == 1 && port->port.count != 1) { + printk(KERN_ERR "sx%d: sx_close: bad port count;" + " tty->count is 1, port count is %d\n", + board_No(bp), port->port.count); + port->port.count = 1; + } + + if (port->port.count > 1) { + port->port.count--; + bp->count--; + + spin_unlock_irqrestore(&port->lock, flags); + + func_exit(); + return; + } + port->port.flags |= ASYNC_CLOSING; + /* + * Now we wait for the transmit buffer to clear; and we notify + * the line discipline to only process XON/XOFF characters. + */ + tty->closing = 1; + spin_unlock_irqrestore(&port->lock, flags); + dprintk(SX_DEBUG_OPEN, "Closing\n"); + if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) + tty_wait_until_sent(tty, port->port.closing_wait); + /* + * At this point we stop accepting input. To do this, we + * disable the receive line status interrupts, and tell the + * interrupt driver to stop checking the data ready bit in the + * line status register. + */ + dprintk(SX_DEBUG_OPEN, "Closed\n"); + port->IER &= ~IER_RXD; + if (port->port.flags & ASYNC_INITIALIZED) { + port->IER &= ~IER_TXRDY; + port->IER |= IER_TXEMPTY; + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CAR, port_No(port)); + sx_out(bp, CD186x_IER, port->IER); + spin_unlock_irqrestore(&bp->lock, flags); + /* + * Before we drop DTR, make sure the UART transmitter + * has completely drained; this is especially + * important if there is a transmit FIFO! + */ + timeout = jiffies+HZ; + while (port->IER & IER_TXEMPTY) { + set_current_state(TASK_INTERRUPTIBLE); + msleep_interruptible(jiffies_to_msecs(port->timeout)); + if (time_after(jiffies, timeout)) { + printk(KERN_INFO "Timeout waiting for close\n"); + break; + } + } + + } + + if (--bp->count < 0) { + printk(KERN_ERR + "sx%d: sx_shutdown_port: bad board count: %d port: %d\n", + board_No(bp), bp->count, tty->index); + bp->count = 0; + } + if (--port->port.count < 0) { + printk(KERN_ERR + "sx%d: sx_close: bad port count for tty%d: %d\n", + board_No(bp), port_No(port), port->port.count); + port->port.count = 0; + } + + sx_shutdown_port(bp, port); + sx_flush_buffer(tty); + tty_ldisc_flush(tty); + spin_lock_irqsave(&port->lock, flags); + tty->closing = 0; + port->port.tty = NULL; + spin_unlock_irqrestore(&port->lock, flags); + if (port->port.blocked_open) { + if (port->port.close_delay) + msleep_interruptible( + jiffies_to_msecs(port->port.close_delay)); + wake_up_interruptible(&port->port.open_wait); + } + port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); + wake_up_interruptible(&port->port.close_wait); + + func_exit(); +} + + +static int sx_write(struct tty_struct *tty, + const unsigned char *buf, int count) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + int c, total = 0; + unsigned long flags; + + func_enter(); + if (sx_paranoia_check(port, tty->name, "sx_write")) { + func_exit(); + return 0; + } + + bp = port_Board(port); + + if (!port->xmit_buf) { + func_exit(); + return 0; + } + + while (1) { + spin_lock_irqsave(&port->lock, flags); + c = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, + SERIAL_XMIT_SIZE - port->xmit_head)); + if (c <= 0) { + spin_unlock_irqrestore(&port->lock, flags); + break; + } + memcpy(port->xmit_buf + port->xmit_head, buf, c); + port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1); + port->xmit_cnt += c; + spin_unlock_irqrestore(&port->lock, flags); + + buf += c; + count -= c; + total += c; + } + + spin_lock_irqsave(&bp->lock, flags); + if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped && + !(port->IER & IER_TXRDY)) { + port->IER |= IER_TXRDY; + sx_out(bp, CD186x_CAR, port_No(port)); + sx_out(bp, CD186x_IER, port->IER); + } + spin_unlock_irqrestore(&bp->lock, flags); + func_exit(); + + return total; +} + + +static int sx_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct specialix_port *port = tty->driver_data; + unsigned long flags; + struct specialix_board *bp; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_put_char")) { + func_exit(); + return 0; + } + dprintk(SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf); + if (!port->xmit_buf) { + func_exit(); + return 0; + } + bp = port_Board(port); + spin_lock_irqsave(&port->lock, flags); + + dprintk(SX_DEBUG_TX, "xmit_cnt: %d xmit_buf: %p\n", + port->xmit_cnt, port->xmit_buf); + if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1 || !port->xmit_buf) { + spin_unlock_irqrestore(&port->lock, flags); + dprintk(SX_DEBUG_TX, "Exit size\n"); + func_exit(); + return 0; + } + dprintk(SX_DEBUG_TX, "Handle xmit: %p %p\n", port, port->xmit_buf); + port->xmit_buf[port->xmit_head++] = ch; + port->xmit_head &= SERIAL_XMIT_SIZE - 1; + port->xmit_cnt++; + spin_unlock_irqrestore(&port->lock, flags); + + func_exit(); + return 1; +} + + +static void sx_flush_chars(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + unsigned long flags; + struct specialix_board *bp = port_Board(port); + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_flush_chars")) { + func_exit(); + return; + } + if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || + !port->xmit_buf) { + func_exit(); + return; + } + spin_lock_irqsave(&bp->lock, flags); + port->IER |= IER_TXRDY; + sx_out(port_Board(port), CD186x_CAR, port_No(port)); + sx_out(port_Board(port), CD186x_IER, port->IER); + spin_unlock_irqrestore(&bp->lock, flags); + + func_exit(); +} + + +static int sx_write_room(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + int ret; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_write_room")) { + func_exit(); + return 0; + } + + ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; + if (ret < 0) + ret = 0; + + func_exit(); + return ret; +} + + +static int sx_chars_in_buffer(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_chars_in_buffer")) { + func_exit(); + return 0; + } + func_exit(); + return port->xmit_cnt; +} + +static int sx_tiocmget(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + unsigned char status; + unsigned int result; + unsigned long flags; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, __func__)) { + func_exit(); + return -ENODEV; + } + + bp = port_Board(port); + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CAR, port_No(port)); + status = sx_in(bp, CD186x_MSVR); + spin_unlock_irqrestore(&bp->lock, flags); + dprintk(SX_DEBUG_INIT, "Got msvr[%d] = %02x, car = %d.\n", + port_No(port), status, sx_in(bp, CD186x_CAR)); + dprintk(SX_DEBUG_INIT, "sx_port = %p, port = %p\n", sx_port, port); + if (sx_crtscts(port->port.tty)) { + result = TIOCM_DTR | TIOCM_DSR + | ((status & MSVR_DTR) ? TIOCM_RTS : 0) + | ((status & MSVR_CD) ? TIOCM_CAR : 0) + | ((status & MSVR_CTS) ? TIOCM_CTS : 0); + } else { + result = TIOCM_RTS | TIOCM_DSR + | ((status & MSVR_DTR) ? TIOCM_DTR : 0) + | ((status & MSVR_CD) ? TIOCM_CAR : 0) + | ((status & MSVR_CTS) ? TIOCM_CTS : 0); + } + + func_exit(); + + return result; +} + + +static int sx_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct specialix_port *port = tty->driver_data; + unsigned long flags; + struct specialix_board *bp; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, __func__)) { + func_exit(); + return -ENODEV; + } + + bp = port_Board(port); + + spin_lock_irqsave(&port->lock, flags); + if (sx_crtscts(port->port.tty)) { + if (set & TIOCM_RTS) + port->MSVR |= MSVR_DTR; + } else { + if (set & TIOCM_DTR) + port->MSVR |= MSVR_DTR; + } + if (sx_crtscts(port->port.tty)) { + if (clear & TIOCM_RTS) + port->MSVR &= ~MSVR_DTR; + } else { + if (clear & TIOCM_DTR) + port->MSVR &= ~MSVR_DTR; + } + spin_lock(&bp->lock); + sx_out(bp, CD186x_CAR, port_No(port)); + sx_out(bp, CD186x_MSVR, port->MSVR); + spin_unlock(&bp->lock); + spin_unlock_irqrestore(&port->lock, flags); + func_exit(); + return 0; +} + + +static int sx_send_break(struct tty_struct *tty, int length) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp = port_Board(port); + unsigned long flags; + + func_enter(); + if (length == 0 || length == -1) + return -EOPNOTSUPP; + + spin_lock_irqsave(&port->lock, flags); + port->break_length = SPECIALIX_TPS / HZ * length; + port->COR2 |= COR2_ETC; + port->IER |= IER_TXRDY; + spin_lock(&bp->lock); + sx_out(bp, CD186x_CAR, port_No(port)); + sx_out(bp, CD186x_COR2, port->COR2); + sx_out(bp, CD186x_IER, port->IER); + spin_unlock(&bp->lock); + spin_unlock_irqrestore(&port->lock, flags); + sx_wait_CCR(bp); + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CCR, CCR_CORCHG2); + spin_unlock_irqrestore(&bp->lock, flags); + sx_wait_CCR(bp); + + func_exit(); + return 0; +} + + +static int sx_set_serial_info(struct specialix_port *port, + struct serial_struct __user *newinfo) +{ + struct serial_struct tmp; + struct specialix_board *bp = port_Board(port); + int change_speed; + + func_enter(); + + if (copy_from_user(&tmp, newinfo, sizeof(tmp))) { + func_enter(); + return -EFAULT; + } + + mutex_lock(&port->port.mutex); + change_speed = ((port->port.flags & ASYNC_SPD_MASK) != + (tmp.flags & ASYNC_SPD_MASK)); + change_speed |= (tmp.custom_divisor != port->custom_divisor); + + if (!capable(CAP_SYS_ADMIN)) { + if ((tmp.close_delay != port->port.close_delay) || + (tmp.closing_wait != port->port.closing_wait) || + ((tmp.flags & ~ASYNC_USR_MASK) != + (port->port.flags & ~ASYNC_USR_MASK))) { + func_exit(); + mutex_unlock(&port->port.mutex); + return -EPERM; + } + port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) | + (tmp.flags & ASYNC_USR_MASK)); + port->custom_divisor = tmp.custom_divisor; + } else { + port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) | + (tmp.flags & ASYNC_FLAGS)); + port->port.close_delay = tmp.close_delay; + port->port.closing_wait = tmp.closing_wait; + port->custom_divisor = tmp.custom_divisor; + } + if (change_speed) + sx_change_speed(bp, port); + + func_exit(); + mutex_unlock(&port->port.mutex); + return 0; +} + + +static int sx_get_serial_info(struct specialix_port *port, + struct serial_struct __user *retinfo) +{ + struct serial_struct tmp; + struct specialix_board *bp = port_Board(port); + + func_enter(); + + memset(&tmp, 0, sizeof(tmp)); + mutex_lock(&port->port.mutex); + tmp.type = PORT_CIRRUS; + tmp.line = port - sx_port; + tmp.port = bp->base; + tmp.irq = bp->irq; + tmp.flags = port->port.flags; + tmp.baud_base = (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC; + tmp.close_delay = port->port.close_delay * HZ/100; + tmp.closing_wait = port->port.closing_wait * HZ/100; + tmp.custom_divisor = port->custom_divisor; + tmp.xmit_fifo_size = CD186x_NFIFO; + mutex_unlock(&port->port.mutex); + if (copy_to_user(retinfo, &tmp, sizeof(tmp))) { + func_exit(); + return -EFAULT; + } + + func_exit(); + return 0; +} + + +static int sx_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + struct specialix_port *port = tty->driver_data; + void __user *argp = (void __user *)arg; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_ioctl")) { + func_exit(); + return -ENODEV; + } + + switch (cmd) { + case TIOCGSERIAL: + func_exit(); + return sx_get_serial_info(port, argp); + case TIOCSSERIAL: + func_exit(); + return sx_set_serial_info(port, argp); + default: + func_exit(); + return -ENOIOCTLCMD; + } + func_exit(); + return 0; +} + + +static void sx_throttle(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + unsigned long flags; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_throttle")) { + func_exit(); + return; + } + + bp = port_Board(port); + + /* Use DTR instead of RTS ! */ + if (sx_crtscts(tty)) + port->MSVR &= ~MSVR_DTR; + else { + /* Auch!!! I think the system shouldn't call this then. */ + /* Or maybe we're supposed (allowed?) to do our side of hw + handshake anyway, even when hardware handshake is off. + When you see this in your logs, please report.... */ + printk(KERN_ERR + "sx%d: Need to throttle, but can't (hardware hs is off)\n", + port_No(port)); + } + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CAR, port_No(port)); + spin_unlock_irqrestore(&bp->lock, flags); + if (I_IXOFF(tty)) { + sx_wait_CCR(bp); + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CCR, CCR_SSCH2); + spin_unlock_irqrestore(&bp->lock, flags); + sx_wait_CCR(bp); + } + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_MSVR, port->MSVR); + spin_unlock_irqrestore(&bp->lock, flags); + + func_exit(); +} + + +static void sx_unthrottle(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + unsigned long flags; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_unthrottle")) { + func_exit(); + return; + } + + bp = port_Board(port); + + spin_lock_irqsave(&port->lock, flags); + /* XXXX Use DTR INSTEAD???? */ + if (sx_crtscts(tty)) + port->MSVR |= MSVR_DTR; + /* Else clause: see remark in "sx_throttle"... */ + spin_lock(&bp->lock); + sx_out(bp, CD186x_CAR, port_No(port)); + spin_unlock(&bp->lock); + if (I_IXOFF(tty)) { + spin_unlock_irqrestore(&port->lock, flags); + sx_wait_CCR(bp); + spin_lock_irqsave(&bp->lock, flags); + sx_out(bp, CD186x_CCR, CCR_SSCH1); + spin_unlock_irqrestore(&bp->lock, flags); + sx_wait_CCR(bp); + spin_lock_irqsave(&port->lock, flags); + } + spin_lock(&bp->lock); + sx_out(bp, CD186x_MSVR, port->MSVR); + spin_unlock(&bp->lock); + spin_unlock_irqrestore(&port->lock, flags); + + func_exit(); +} + + +static void sx_stop(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + unsigned long flags; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_stop")) { + func_exit(); + return; + } + + bp = port_Board(port); + + spin_lock_irqsave(&port->lock, flags); + port->IER &= ~IER_TXRDY; + spin_lock(&bp->lock); + sx_out(bp, CD186x_CAR, port_No(port)); + sx_out(bp, CD186x_IER, port->IER); + spin_unlock(&bp->lock); + spin_unlock_irqrestore(&port->lock, flags); + + func_exit(); +} + + +static void sx_start(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + unsigned long flags; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_start")) { + func_exit(); + return; + } + + bp = port_Board(port); + + spin_lock_irqsave(&port->lock, flags); + if (port->xmit_cnt && port->xmit_buf && !(port->IER & IER_TXRDY)) { + port->IER |= IER_TXRDY; + spin_lock(&bp->lock); + sx_out(bp, CD186x_CAR, port_No(port)); + sx_out(bp, CD186x_IER, port->IER); + spin_unlock(&bp->lock); + } + spin_unlock_irqrestore(&port->lock, flags); + + func_exit(); +} + +static void sx_hangup(struct tty_struct *tty) +{ + struct specialix_port *port = tty->driver_data; + struct specialix_board *bp; + unsigned long flags; + + func_enter(); + + if (sx_paranoia_check(port, tty->name, "sx_hangup")) { + func_exit(); + return; + } + + bp = port_Board(port); + + sx_shutdown_port(bp, port); + spin_lock_irqsave(&port->lock, flags); + bp->count -= port->port.count; + if (bp->count < 0) { + printk(KERN_ERR + "sx%d: sx_hangup: bad board count: %d port: %d\n", + board_No(bp), bp->count, tty->index); + bp->count = 0; + } + port->port.count = 0; + port->port.flags &= ~ASYNC_NORMAL_ACTIVE; + port->port.tty = NULL; + spin_unlock_irqrestore(&port->lock, flags); + wake_up_interruptible(&port->port.open_wait); + + func_exit(); +} + + +static void sx_set_termios(struct tty_struct *tty, + struct ktermios *old_termios) +{ + struct specialix_port *port = tty->driver_data; + unsigned long flags; + struct specialix_board *bp; + + if (sx_paranoia_check(port, tty->name, "sx_set_termios")) + return; + + bp = port_Board(port); + spin_lock_irqsave(&port->lock, flags); + sx_change_speed(port_Board(port), port); + spin_unlock_irqrestore(&port->lock, flags); + + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + sx_start(tty); + } +} + +static const struct tty_operations sx_ops = { + .open = sx_open, + .close = sx_close, + .write = sx_write, + .put_char = sx_put_char, + .flush_chars = sx_flush_chars, + .write_room = sx_write_room, + .chars_in_buffer = sx_chars_in_buffer, + .flush_buffer = sx_flush_buffer, + .ioctl = sx_ioctl, + .throttle = sx_throttle, + .unthrottle = sx_unthrottle, + .set_termios = sx_set_termios, + .stop = sx_stop, + .start = sx_start, + .hangup = sx_hangup, + .tiocmget = sx_tiocmget, + .tiocmset = sx_tiocmset, + .break_ctl = sx_send_break, +}; + +static int sx_init_drivers(void) +{ + int error; + int i; + + func_enter(); + + specialix_driver = alloc_tty_driver(SX_NBOARD * SX_NPORT); + if (!specialix_driver) { + printk(KERN_ERR "sx: Couldn't allocate tty_driver.\n"); + func_exit(); + return 1; + } + + specialix_driver->owner = THIS_MODULE; + specialix_driver->name = "ttyW"; + specialix_driver->major = SPECIALIX_NORMAL_MAJOR; + specialix_driver->type = TTY_DRIVER_TYPE_SERIAL; + specialix_driver->subtype = SERIAL_TYPE_NORMAL; + specialix_driver->init_termios = tty_std_termios; + specialix_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + specialix_driver->init_termios.c_ispeed = 9600; + specialix_driver->init_termios.c_ospeed = 9600; + specialix_driver->flags = TTY_DRIVER_REAL_RAW | + TTY_DRIVER_HARDWARE_BREAK; + tty_set_operations(specialix_driver, &sx_ops); + + error = tty_register_driver(specialix_driver); + if (error) { + put_tty_driver(specialix_driver); + printk(KERN_ERR + "sx: Couldn't register specialix IO8+ driver, error = %d\n", + error); + func_exit(); + return 1; + } + memset(sx_port, 0, sizeof(sx_port)); + for (i = 0; i < SX_NPORT * SX_NBOARD; i++) { + sx_port[i].magic = SPECIALIX_MAGIC; + tty_port_init(&sx_port[i].port); + spin_lock_init(&sx_port[i].lock); + } + + func_exit(); + return 0; +} + +static void sx_release_drivers(void) +{ + func_enter(); + + tty_unregister_driver(specialix_driver); + put_tty_driver(specialix_driver); + func_exit(); +} + +/* + * This routine must be called by kernel at boot time + */ +static int __init specialix_init(void) +{ + int i; + int found = 0; + + func_enter(); + + printk(KERN_INFO "sx: Specialix IO8+ driver v" VERSION ", (c) R.E.Wolff 1997/1998.\n"); + printk(KERN_INFO "sx: derived from work (c) D.Gorodchanin 1994-1996.\n"); + if (sx_rtscts) + printk(KERN_INFO + "sx: DTR/RTS pin is RTS when CRTSCTS is on.\n"); + else + printk(KERN_INFO "sx: DTR/RTS pin is always RTS.\n"); + + for (i = 0; i < SX_NBOARD; i++) + spin_lock_init(&sx_board[i].lock); + + if (sx_init_drivers()) { + func_exit(); + return -EIO; + } + + for (i = 0; i < SX_NBOARD; i++) + if (sx_board[i].base && !sx_probe(&sx_board[i])) + found++; + +#ifdef CONFIG_PCI + { + struct pci_dev *pdev = NULL; + + i = 0; + while (i < SX_NBOARD) { + if (sx_board[i].flags & SX_BOARD_PRESENT) { + i++; + continue; + } + pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, + PCI_DEVICE_ID_SPECIALIX_IO8, pdev); + if (!pdev) + break; + + if (pci_enable_device(pdev)) + continue; + + sx_board[i].irq = pdev->irq; + + sx_board[i].base = pci_resource_start(pdev, 2); + + sx_board[i].flags |= SX_BOARD_IS_PCI; + if (!sx_probe(&sx_board[i])) + found++; + } + /* May exit pci_get sequence early with lots of boards */ + if (pdev != NULL) + pci_dev_put(pdev); + } +#endif + + if (!found) { + sx_release_drivers(); + printk(KERN_INFO "sx: No specialix IO8+ boards detected.\n"); + func_exit(); + return -EIO; + } + + func_exit(); + return 0; +} + +static int iobase[SX_NBOARD] = {0,}; +static int irq[SX_NBOARD] = {0,}; + +module_param_array(iobase, int, NULL, 0); +module_param_array(irq, int, NULL, 0); +module_param(sx_debug, int, 0); +module_param(sx_rtscts, int, 0); +module_param(sx_rxfifo, int, 0); + +/* + * You can setup up to 4 boards. + * by specifying "iobase=0xXXX,0xXXX ..." as insmod parameter. + * You should specify the IRQs too in that case "irq=....,...". + * + * More than 4 boards in one computer is not possible, as the card can + * only use 4 different interrupts. + * + */ +static int __init specialix_init_module(void) +{ + int i; + + func_enter(); + + if (iobase[0] || iobase[1] || iobase[2] || iobase[3]) { + for (i = 0; i < SX_NBOARD; i++) { + sx_board[i].base = iobase[i]; + sx_board[i].irq = irq[i]; + sx_board[i].count = 0; + } + } + + func_exit(); + + return specialix_init(); +} + +static void __exit specialix_exit_module(void) +{ + int i; + + func_enter(); + + sx_release_drivers(); + for (i = 0; i < SX_NBOARD; i++) + if (sx_board[i].flags & SX_BOARD_PRESENT) + sx_release_io_range(&sx_board[i]); + func_exit(); +} + +static struct pci_device_id specialx_pci_tbl[] __devinitdata __used = { + { PCI_DEVICE(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_IO8) }, + { } +}; +MODULE_DEVICE_TABLE(pci, specialx_pci_tbl); + +module_init(specialix_init_module); +module_exit(specialix_exit_module); + +MODULE_LICENSE("GPL"); +MODULE_ALIAS_CHARDEV_MAJOR(SPECIALIX_NORMAL_MAJOR); diff --git a/drivers/staging/tty/specialix_io8.h b/drivers/staging/tty/specialix_io8.h new file mode 100644 index 000000000000..c63005274d9b --- /dev/null +++ b/drivers/staging/tty/specialix_io8.h @@ -0,0 +1,140 @@ +/* + * linux/drivers/char/specialix_io8.h -- + * Specialix IO8+ multiport serial driver. + * + * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl) + * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) + * + * + * Specialix pays for the development and support of this driver. + * Please DO contact io8-linux@specialix.co.uk if you require + * support. + * + * This driver was developped in the BitWizard linux device + * driver service. If you require a linux device driver for your + * product, please contact devices@BitWizard.nl for a quote. + * + * This code is firmly based on the riscom/8 serial driver, + * written by Dmitry Gorodchanin. The specialix IO8+ card + * programming information was obtained from the CL-CD1865 Data + * Book, and Specialix document number 6200059: IO8+ Hardware + * Functional Specification. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be + * useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, + * USA. + * */ + +#ifndef __LINUX_SPECIALIX_H +#define __LINUX_SPECIALIX_H + +#include + +#ifdef __KERNEL__ + +/* You can have max 4 ISA cards in one PC, and I recommend not much +more than a few PCI versions of the card. */ + +#define SX_NBOARD 8 + +/* NOTE: Specialix decoder recognizes 4 addresses, but only two are used.... */ +#define SX_IO_SPACE 4 +/* The PCI version decodes 8 addresses, but still only 2 are used. */ +#define SX_PCI_IO_SPACE 8 + +/* eight ports per board. */ +#define SX_NPORT 8 +#define SX_BOARD(line) ((line) / SX_NPORT) +#define SX_PORT(line) ((line) & (SX_NPORT - 1)) + + +#define SX_DATA_REG 0 /* Base+0 : Data register */ +#define SX_ADDR_REG 1 /* base+1 : Address register. */ + +#define MHz *1000000 /* I'm ashamed of myself. */ + +/* On-board oscillator frequency */ +#define SX_OSCFREQ (25 MHz/2) +/* There is a 25MHz crystal on the board, but the chip is in /2 mode */ + + +/* Ticks per sec. Used for setting receiver timeout and break length */ +#define SPECIALIX_TPS 4000 + +/* Yeah, after heavy testing I decided it must be 6. + * Sure, You can change it if needed. + */ +#define SPECIALIX_RXFIFO 6 /* Max. receiver FIFO size (1-8) */ + +#define SPECIALIX_MAGIC 0x0907 + +#define SX_CCR_TIMEOUT 10000 /* CCR timeout. You may need to wait upto + 10 milliseconds before the internal + processor is available again after + you give it a command */ + +#define SX_IOBASE1 0x100 +#define SX_IOBASE2 0x180 +#define SX_IOBASE3 0x250 +#define SX_IOBASE4 0x260 + +struct specialix_board { + unsigned long flags; + unsigned short base; + unsigned char irq; + //signed char count; + int count; + unsigned char DTR; + int reg; + spinlock_t lock; +}; + +#define SX_BOARD_PRESENT 0x00000001 +#define SX_BOARD_ACTIVE 0x00000002 +#define SX_BOARD_IS_PCI 0x00000004 + + +struct specialix_port { + int magic; + struct tty_port port; + int baud_base; + int flags; + int timeout; + unsigned char * xmit_buf; + int custom_divisor; + int xmit_head; + int xmit_tail; + int xmit_cnt; + short wakeup_chars; + short break_length; + unsigned char mark_mask; + unsigned char IER; + unsigned char MSVR; + unsigned char COR2; + unsigned long overrun; + unsigned long hits[10]; + spinlock_t lock; +}; + +#endif /* __KERNEL__ */ +#endif /* __LINUX_SPECIALIX_H */ + + + + + + + + + diff --git a/drivers/staging/tty/stallion.c b/drivers/staging/tty/stallion.c new file mode 100644 index 000000000000..4fff5cd3b163 --- /dev/null +++ b/drivers/staging/tty/stallion.c @@ -0,0 +1,4651 @@ +/*****************************************************************************/ + +/* + * stallion.c -- stallion multiport serial driver. + * + * Copyright (C) 1996-1999 Stallion Technologies + * Copyright (C) 1994-1996 Greg Ungerer. + * + * This code is loosely based on the Linux serial driver, written by + * Linus Torvalds, Theodore T'so and others. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/*****************************************************************************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +/*****************************************************************************/ + +/* + * Define different board types. Use the standard Stallion "assigned" + * board numbers. Boards supported in this driver are abbreviated as + * EIO = EasyIO and ECH = EasyConnection 8/32. + */ +#define BRD_EASYIO 20 +#define BRD_ECH 21 +#define BRD_ECHMC 22 +#define BRD_ECHPCI 26 +#define BRD_ECH64PCI 27 +#define BRD_EASYIOPCI 28 + +struct stlconf { + unsigned int brdtype; + int ioaddr1; + int ioaddr2; + unsigned long memaddr; + int irq; + int irqtype; +}; + +static unsigned int stl_nrbrds; + +/*****************************************************************************/ + +/* + * Define some important driver characteristics. Device major numbers + * allocated as per Linux Device Registry. + */ +#ifndef STL_SIOMEMMAJOR +#define STL_SIOMEMMAJOR 28 +#endif +#ifndef STL_SERIALMAJOR +#define STL_SERIALMAJOR 24 +#endif +#ifndef STL_CALLOUTMAJOR +#define STL_CALLOUTMAJOR 25 +#endif + +/* + * Set the TX buffer size. Bigger is better, but we don't want + * to chew too much memory with buffers! + */ +#define STL_TXBUFLOW 512 +#define STL_TXBUFSIZE 4096 + +/*****************************************************************************/ + +/* + * Define our local driver identity first. Set up stuff to deal with + * all the local structures required by a serial tty driver. + */ +static char *stl_drvtitle = "Stallion Multiport Serial Driver"; +static char *stl_drvname = "stallion"; +static char *stl_drvversion = "5.6.0"; + +static struct tty_driver *stl_serial; + +/* + * Define a local default termios struct. All ports will be created + * with this termios initially. Basically all it defines is a raw port + * at 9600, 8 data bits, 1 stop bit. + */ +static struct ktermios stl_deftermios = { + .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), + .c_cc = INIT_C_CC, + .c_ispeed = 9600, + .c_ospeed = 9600, +}; + +/* + * Define global place to put buffer overflow characters. + */ +static char stl_unwanted[SC26198_RXFIFOSIZE]; + +/*****************************************************************************/ + +static DEFINE_MUTEX(stl_brdslock); +static struct stlbrd *stl_brds[STL_MAXBRDS]; + +static const struct tty_port_operations stl_port_ops; + +/* + * Per board state flags. Used with the state field of the board struct. + * Not really much here! + */ +#define BRD_FOUND 0x1 +#define STL_PROBED 0x2 + + +/* + * Define the port structure istate flags. These set of flags are + * modified at interrupt time - so setting and reseting them needs + * to be atomic. Use the bit clear/setting routines for this. + */ +#define ASYI_TXBUSY 1 +#define ASYI_TXLOW 2 +#define ASYI_TXFLOWED 3 + +/* + * Define an array of board names as printable strings. Handy for + * referencing boards when printing trace and stuff. + */ +static char *stl_brdnames[] = { + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + "EasyIO", + "EC8/32-AT", + "EC8/32-MC", + NULL, + NULL, + NULL, + "EC8/32-PCI", + "EC8/64-PCI", + "EasyIO-PCI", +}; + +/*****************************************************************************/ + +/* + * Define some string labels for arguments passed from the module + * load line. These allow for easy board definitions, and easy + * modification of the io, memory and irq resoucres. + */ +static unsigned int stl_nargs; +static char *board0[4]; +static char *board1[4]; +static char *board2[4]; +static char *board3[4]; + +static char **stl_brdsp[] = { + (char **) &board0, + (char **) &board1, + (char **) &board2, + (char **) &board3 +}; + +/* + * Define a set of common board names, and types. This is used to + * parse any module arguments. + */ + +static struct { + char *name; + int type; +} stl_brdstr[] = { + { "easyio", BRD_EASYIO }, + { "eio", BRD_EASYIO }, + { "20", BRD_EASYIO }, + { "ec8/32", BRD_ECH }, + { "ec8/32-at", BRD_ECH }, + { "ec8/32-isa", BRD_ECH }, + { "ech", BRD_ECH }, + { "echat", BRD_ECH }, + { "21", BRD_ECH }, + { "ec8/32-mc", BRD_ECHMC }, + { "ec8/32-mca", BRD_ECHMC }, + { "echmc", BRD_ECHMC }, + { "echmca", BRD_ECHMC }, + { "22", BRD_ECHMC }, + { "ec8/32-pc", BRD_ECHPCI }, + { "ec8/32-pci", BRD_ECHPCI }, + { "26", BRD_ECHPCI }, + { "ec8/64-pc", BRD_ECH64PCI }, + { "ec8/64-pci", BRD_ECH64PCI }, + { "ech-pci", BRD_ECH64PCI }, + { "echpci", BRD_ECH64PCI }, + { "echpc", BRD_ECH64PCI }, + { "27", BRD_ECH64PCI }, + { "easyio-pc", BRD_EASYIOPCI }, + { "easyio-pci", BRD_EASYIOPCI }, + { "eio-pci", BRD_EASYIOPCI }, + { "eiopci", BRD_EASYIOPCI }, + { "28", BRD_EASYIOPCI }, +}; + +/* + * Define the module agruments. + */ + +module_param_array(board0, charp, &stl_nargs, 0); +MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,ioaddr2][,irq]]"); +module_param_array(board1, charp, &stl_nargs, 0); +MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,ioaddr2][,irq]]"); +module_param_array(board2, charp, &stl_nargs, 0); +MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,ioaddr2][,irq]]"); +module_param_array(board3, charp, &stl_nargs, 0); +MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,ioaddr2][,irq]]"); + +/*****************************************************************************/ + +/* + * Hardware ID bits for the EasyIO and ECH boards. These defines apply + * to the directly accessible io ports of these boards (not the uarts - + * they are in cd1400.h and sc26198.h). + */ +#define EIO_8PORTRS 0x04 +#define EIO_4PORTRS 0x05 +#define EIO_8PORTDI 0x00 +#define EIO_8PORTM 0x06 +#define EIO_MK3 0x03 +#define EIO_IDBITMASK 0x07 + +#define EIO_BRDMASK 0xf0 +#define ID_BRD4 0x10 +#define ID_BRD8 0x20 +#define ID_BRD16 0x30 + +#define EIO_INTRPEND 0x08 +#define EIO_INTEDGE 0x00 +#define EIO_INTLEVEL 0x08 +#define EIO_0WS 0x10 + +#define ECH_ID 0xa0 +#define ECH_IDBITMASK 0xe0 +#define ECH_BRDENABLE 0x08 +#define ECH_BRDDISABLE 0x00 +#define ECH_INTENABLE 0x01 +#define ECH_INTDISABLE 0x00 +#define ECH_INTLEVEL 0x02 +#define ECH_INTEDGE 0x00 +#define ECH_INTRPEND 0x01 +#define ECH_BRDRESET 0x01 + +#define ECHMC_INTENABLE 0x01 +#define ECHMC_BRDRESET 0x02 + +#define ECH_PNLSTATUS 2 +#define ECH_PNL16PORT 0x20 +#define ECH_PNLIDMASK 0x07 +#define ECH_PNLXPID 0x40 +#define ECH_PNLINTRPEND 0x80 + +#define ECH_ADDR2MASK 0x1e0 + +/* + * Define the vector mapping bits for the programmable interrupt board + * hardware. These bits encode the interrupt for the board to use - it + * is software selectable (except the EIO-8M). + */ +static unsigned char stl_vecmap[] = { + 0xff, 0xff, 0xff, 0x04, 0x06, 0x05, 0xff, 0x07, + 0xff, 0xff, 0x00, 0x02, 0x01, 0xff, 0xff, 0x03 +}; + +/* + * Lock ordering is that you may not take stallion_lock holding + * brd_lock. + */ + +static spinlock_t brd_lock; /* Guard the board mapping */ +static spinlock_t stallion_lock; /* Guard the tty driver */ + +/* + * Set up enable and disable macros for the ECH boards. They require + * the secondary io address space to be activated and deactivated. + * This way all ECH boards can share their secondary io region. + * If this is an ECH-PCI board then also need to set the page pointer + * to point to the correct page. + */ +#define BRDENABLE(brdnr,pagenr) \ + if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \ + outb((stl_brds[(brdnr)]->ioctrlval | ECH_BRDENABLE), \ + stl_brds[(brdnr)]->ioctrl); \ + else if (stl_brds[(brdnr)]->brdtype == BRD_ECHPCI) \ + outb((pagenr), stl_brds[(brdnr)]->ioctrl); + +#define BRDDISABLE(brdnr) \ + if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \ + outb((stl_brds[(brdnr)]->ioctrlval | ECH_BRDDISABLE), \ + stl_brds[(brdnr)]->ioctrl); + +#define STL_CD1400MAXBAUD 230400 +#define STL_SC26198MAXBAUD 460800 + +#define STL_BAUDBASE 115200 +#define STL_CLOSEDELAY (5 * HZ / 10) + +/*****************************************************************************/ + +/* + * Define the Stallion PCI vendor and device IDs. + */ +#ifndef PCI_VENDOR_ID_STALLION +#define PCI_VENDOR_ID_STALLION 0x124d +#endif +#ifndef PCI_DEVICE_ID_ECHPCI832 +#define PCI_DEVICE_ID_ECHPCI832 0x0000 +#endif +#ifndef PCI_DEVICE_ID_ECHPCI864 +#define PCI_DEVICE_ID_ECHPCI864 0x0002 +#endif +#ifndef PCI_DEVICE_ID_EIOPCI +#define PCI_DEVICE_ID_EIOPCI 0x0003 +#endif + +/* + * Define structure to hold all Stallion PCI boards. + */ + +static struct pci_device_id stl_pcibrds[] = { + { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI864), + .driver_data = BRD_ECH64PCI }, + { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_EIOPCI), + .driver_data = BRD_EASYIOPCI }, + { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECHPCI832), + .driver_data = BRD_ECHPCI }, + { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87410), + .driver_data = BRD_ECHPCI }, + { } +}; +MODULE_DEVICE_TABLE(pci, stl_pcibrds); + +/*****************************************************************************/ + +/* + * Define macros to extract a brd/port number from a minor number. + */ +#define MINOR2BRD(min) (((min) & 0xc0) >> 6) +#define MINOR2PORT(min) ((min) & 0x3f) + +/* + * Define a baud rate table that converts termios baud rate selector + * into the actual baud rate value. All baud rate calculations are + * based on the actual baud rate required. + */ +static unsigned int stl_baudrates[] = { + 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, + 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 +}; + +/*****************************************************************************/ + +/* + * Declare all those functions in this driver! + */ + +static long stl_memioctl(struct file *fp, unsigned int cmd, unsigned long arg); +static int stl_brdinit(struct stlbrd *brdp); +static int stl_getportstats(struct tty_struct *tty, struct stlport *portp, comstats_t __user *cp); +static int stl_clrportstats(struct stlport *portp, comstats_t __user *cp); + +/* + * CD1400 uart specific handling functions. + */ +static void stl_cd1400setreg(struct stlport *portp, int regnr, int value); +static int stl_cd1400getreg(struct stlport *portp, int regnr); +static int stl_cd1400updatereg(struct stlport *portp, int regnr, int value); +static int stl_cd1400panelinit(struct stlbrd *brdp, struct stlpanel *panelp); +static void stl_cd1400portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp); +static void stl_cd1400setport(struct stlport *portp, struct ktermios *tiosp); +static int stl_cd1400getsignals(struct stlport *portp); +static void stl_cd1400setsignals(struct stlport *portp, int dtr, int rts); +static void stl_cd1400ccrwait(struct stlport *portp); +static void stl_cd1400enablerxtx(struct stlport *portp, int rx, int tx); +static void stl_cd1400startrxtx(struct stlport *portp, int rx, int tx); +static void stl_cd1400disableintrs(struct stlport *portp); +static void stl_cd1400sendbreak(struct stlport *portp, int len); +static void stl_cd1400flowctrl(struct stlport *portp, int state); +static void stl_cd1400sendflow(struct stlport *portp, int state); +static void stl_cd1400flush(struct stlport *portp); +static int stl_cd1400datastate(struct stlport *portp); +static void stl_cd1400eiointr(struct stlpanel *panelp, unsigned int iobase); +static void stl_cd1400echintr(struct stlpanel *panelp, unsigned int iobase); +static void stl_cd1400txisr(struct stlpanel *panelp, int ioaddr); +static void stl_cd1400rxisr(struct stlpanel *panelp, int ioaddr); +static void stl_cd1400mdmisr(struct stlpanel *panelp, int ioaddr); + +static inline int stl_cd1400breakisr(struct stlport *portp, int ioaddr); + +/* + * SC26198 uart specific handling functions. + */ +static void stl_sc26198setreg(struct stlport *portp, int regnr, int value); +static int stl_sc26198getreg(struct stlport *portp, int regnr); +static int stl_sc26198updatereg(struct stlport *portp, int regnr, int value); +static int stl_sc26198getglobreg(struct stlport *portp, int regnr); +static int stl_sc26198panelinit(struct stlbrd *brdp, struct stlpanel *panelp); +static void stl_sc26198portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp); +static void stl_sc26198setport(struct stlport *portp, struct ktermios *tiosp); +static int stl_sc26198getsignals(struct stlport *portp); +static void stl_sc26198setsignals(struct stlport *portp, int dtr, int rts); +static void stl_sc26198enablerxtx(struct stlport *portp, int rx, int tx); +static void stl_sc26198startrxtx(struct stlport *portp, int rx, int tx); +static void stl_sc26198disableintrs(struct stlport *portp); +static void stl_sc26198sendbreak(struct stlport *portp, int len); +static void stl_sc26198flowctrl(struct stlport *portp, int state); +static void stl_sc26198sendflow(struct stlport *portp, int state); +static void stl_sc26198flush(struct stlport *portp); +static int stl_sc26198datastate(struct stlport *portp); +static void stl_sc26198wait(struct stlport *portp); +static void stl_sc26198txunflow(struct stlport *portp, struct tty_struct *tty); +static void stl_sc26198intr(struct stlpanel *panelp, unsigned int iobase); +static void stl_sc26198txisr(struct stlport *port); +static void stl_sc26198rxisr(struct stlport *port, unsigned int iack); +static void stl_sc26198rxbadch(struct stlport *portp, unsigned char status, char ch); +static void stl_sc26198rxbadchars(struct stlport *portp); +static void stl_sc26198otherisr(struct stlport *port, unsigned int iack); + +/*****************************************************************************/ + +/* + * Generic UART support structure. + */ +typedef struct uart { + int (*panelinit)(struct stlbrd *brdp, struct stlpanel *panelp); + void (*portinit)(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp); + void (*setport)(struct stlport *portp, struct ktermios *tiosp); + int (*getsignals)(struct stlport *portp); + void (*setsignals)(struct stlport *portp, int dtr, int rts); + void (*enablerxtx)(struct stlport *portp, int rx, int tx); + void (*startrxtx)(struct stlport *portp, int rx, int tx); + void (*disableintrs)(struct stlport *portp); + void (*sendbreak)(struct stlport *portp, int len); + void (*flowctrl)(struct stlport *portp, int state); + void (*sendflow)(struct stlport *portp, int state); + void (*flush)(struct stlport *portp); + int (*datastate)(struct stlport *portp); + void (*intr)(struct stlpanel *panelp, unsigned int iobase); +} uart_t; + +/* + * Define some macros to make calling these functions nice and clean. + */ +#define stl_panelinit (* ((uart_t *) panelp->uartp)->panelinit) +#define stl_portinit (* ((uart_t *) portp->uartp)->portinit) +#define stl_setport (* ((uart_t *) portp->uartp)->setport) +#define stl_getsignals (* ((uart_t *) portp->uartp)->getsignals) +#define stl_setsignals (* ((uart_t *) portp->uartp)->setsignals) +#define stl_enablerxtx (* ((uart_t *) portp->uartp)->enablerxtx) +#define stl_startrxtx (* ((uart_t *) portp->uartp)->startrxtx) +#define stl_disableintrs (* ((uart_t *) portp->uartp)->disableintrs) +#define stl_sendbreak (* ((uart_t *) portp->uartp)->sendbreak) +#define stl_flowctrl (* ((uart_t *) portp->uartp)->flowctrl) +#define stl_sendflow (* ((uart_t *) portp->uartp)->sendflow) +#define stl_flush (* ((uart_t *) portp->uartp)->flush) +#define stl_datastate (* ((uart_t *) portp->uartp)->datastate) + +/*****************************************************************************/ + +/* + * CD1400 UART specific data initialization. + */ +static uart_t stl_cd1400uart = { + stl_cd1400panelinit, + stl_cd1400portinit, + stl_cd1400setport, + stl_cd1400getsignals, + stl_cd1400setsignals, + stl_cd1400enablerxtx, + stl_cd1400startrxtx, + stl_cd1400disableintrs, + stl_cd1400sendbreak, + stl_cd1400flowctrl, + stl_cd1400sendflow, + stl_cd1400flush, + stl_cd1400datastate, + stl_cd1400eiointr +}; + +/* + * Define the offsets within the register bank of a cd1400 based panel. + * These io address offsets are common to the EasyIO board as well. + */ +#define EREG_ADDR 0 +#define EREG_DATA 4 +#define EREG_RXACK 5 +#define EREG_TXACK 6 +#define EREG_MDACK 7 + +#define EREG_BANKSIZE 8 + +#define CD1400_CLK 25000000 +#define CD1400_CLK8M 20000000 + +/* + * Define the cd1400 baud rate clocks. These are used when calculating + * what clock and divisor to use for the required baud rate. Also + * define the maximum baud rate allowed, and the default base baud. + */ +static int stl_cd1400clkdivs[] = { + CD1400_CLK0, CD1400_CLK1, CD1400_CLK2, CD1400_CLK3, CD1400_CLK4 +}; + +/*****************************************************************************/ + +/* + * SC26198 UART specific data initization. + */ +static uart_t stl_sc26198uart = { + stl_sc26198panelinit, + stl_sc26198portinit, + stl_sc26198setport, + stl_sc26198getsignals, + stl_sc26198setsignals, + stl_sc26198enablerxtx, + stl_sc26198startrxtx, + stl_sc26198disableintrs, + stl_sc26198sendbreak, + stl_sc26198flowctrl, + stl_sc26198sendflow, + stl_sc26198flush, + stl_sc26198datastate, + stl_sc26198intr +}; + +/* + * Define the offsets within the register bank of a sc26198 based panel. + */ +#define XP_DATA 0 +#define XP_ADDR 1 +#define XP_MODID 2 +#define XP_STATUS 2 +#define XP_IACK 3 + +#define XP_BANKSIZE 4 + +/* + * Define the sc26198 baud rate table. Offsets within the table + * represent the actual baud rate selector of sc26198 registers. + */ +static unsigned int sc26198_baudtable[] = { + 50, 75, 150, 200, 300, 450, 600, 900, 1200, 1800, 2400, 3600, + 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 115200, + 230400, 460800, 921600 +}; + +#define SC26198_NRBAUDS ARRAY_SIZE(sc26198_baudtable) + +/*****************************************************************************/ + +/* + * Define the driver info for a user level control device. Used mainly + * to get at port stats - only not using the port device itself. + */ +static const struct file_operations stl_fsiomem = { + .owner = THIS_MODULE, + .unlocked_ioctl = stl_memioctl, + .llseek = noop_llseek, +}; + +static struct class *stallion_class; + +static void stl_cd_change(struct stlport *portp) +{ + unsigned int oldsigs = portp->sigs; + struct tty_struct *tty = tty_port_tty_get(&portp->port); + + if (!tty) + return; + + portp->sigs = stl_getsignals(portp); + + if ((portp->sigs & TIOCM_CD) && ((oldsigs & TIOCM_CD) == 0)) + wake_up_interruptible(&portp->port.open_wait); + + if ((oldsigs & TIOCM_CD) && ((portp->sigs & TIOCM_CD) == 0)) + if (portp->port.flags & ASYNC_CHECK_CD) + tty_hangup(tty); + tty_kref_put(tty); +} + +/* + * Check for any arguments passed in on the module load command line. + */ + +/*****************************************************************************/ + +/* + * Parse the supplied argument string, into the board conf struct. + */ + +static int __init stl_parsebrd(struct stlconf *confp, char **argp) +{ + char *sp; + unsigned int i; + + pr_debug("stl_parsebrd(confp=%p,argp=%p)\n", confp, argp); + + if ((argp[0] == NULL) || (*argp[0] == 0)) + return 0; + + for (sp = argp[0], i = 0; (*sp != 0) && (i < 25); sp++, i++) + *sp = tolower(*sp); + + for (i = 0; i < ARRAY_SIZE(stl_brdstr); i++) + if (strcmp(stl_brdstr[i].name, argp[0]) == 0) + break; + + if (i == ARRAY_SIZE(stl_brdstr)) { + printk("STALLION: unknown board name, %s?\n", argp[0]); + return 0; + } + + confp->brdtype = stl_brdstr[i].type; + + i = 1; + if ((argp[i] != NULL) && (*argp[i] != 0)) + confp->ioaddr1 = simple_strtoul(argp[i], NULL, 0); + i++; + if (confp->brdtype == BRD_ECH) { + if ((argp[i] != NULL) && (*argp[i] != 0)) + confp->ioaddr2 = simple_strtoul(argp[i], NULL, 0); + i++; + } + if ((argp[i] != NULL) && (*argp[i] != 0)) + confp->irq = simple_strtoul(argp[i], NULL, 0); + return 1; +} + +/*****************************************************************************/ + +/* + * Allocate a new board structure. Fill out the basic info in it. + */ + +static struct stlbrd *stl_allocbrd(void) +{ + struct stlbrd *brdp; + + brdp = kzalloc(sizeof(struct stlbrd), GFP_KERNEL); + if (!brdp) { + printk("STALLION: failed to allocate memory (size=%Zd)\n", + sizeof(struct stlbrd)); + return NULL; + } + + brdp->magic = STL_BOARDMAGIC; + return brdp; +} + +/*****************************************************************************/ + +static int stl_activate(struct tty_port *port, struct tty_struct *tty) +{ + struct stlport *portp = container_of(port, struct stlport, port); + if (!portp->tx.buf) { + portp->tx.buf = kmalloc(STL_TXBUFSIZE, GFP_KERNEL); + if (!portp->tx.buf) + return -ENOMEM; + portp->tx.head = portp->tx.buf; + portp->tx.tail = portp->tx.buf; + } + stl_setport(portp, tty->termios); + portp->sigs = stl_getsignals(portp); + stl_setsignals(portp, 1, 1); + stl_enablerxtx(portp, 1, 1); + stl_startrxtx(portp, 1, 0); + return 0; +} + +static int stl_open(struct tty_struct *tty, struct file *filp) +{ + struct stlport *portp; + struct stlbrd *brdp; + unsigned int minordev, brdnr, panelnr; + int portnr; + + pr_debug("stl_open(tty=%p,filp=%p): device=%s\n", tty, filp, tty->name); + + minordev = tty->index; + brdnr = MINOR2BRD(minordev); + if (brdnr >= stl_nrbrds) + return -ENODEV; + brdp = stl_brds[brdnr]; + if (brdp == NULL) + return -ENODEV; + + minordev = MINOR2PORT(minordev); + for (portnr = -1, panelnr = 0; panelnr < STL_MAXPANELS; panelnr++) { + if (brdp->panels[panelnr] == NULL) + break; + if (minordev < brdp->panels[panelnr]->nrports) { + portnr = minordev; + break; + } + minordev -= brdp->panels[panelnr]->nrports; + } + if (portnr < 0) + return -ENODEV; + + portp = brdp->panels[panelnr]->ports[portnr]; + if (portp == NULL) + return -ENODEV; + + tty->driver_data = portp; + return tty_port_open(&portp->port, tty, filp); + +} + +/*****************************************************************************/ + +static int stl_carrier_raised(struct tty_port *port) +{ + struct stlport *portp = container_of(port, struct stlport, port); + return (portp->sigs & TIOCM_CD) ? 1 : 0; +} + +static void stl_dtr_rts(struct tty_port *port, int on) +{ + struct stlport *portp = container_of(port, struct stlport, port); + /* Takes brd_lock internally */ + stl_setsignals(portp, on, on); +} + +/*****************************************************************************/ + +static void stl_flushbuffer(struct tty_struct *tty) +{ + struct stlport *portp; + + pr_debug("stl_flushbuffer(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return; + + stl_flush(portp); + tty_wakeup(tty); +} + +/*****************************************************************************/ + +static void stl_waituntilsent(struct tty_struct *tty, int timeout) +{ + struct stlport *portp; + unsigned long tend; + + pr_debug("stl_waituntilsent(tty=%p,timeout=%d)\n", tty, timeout); + + portp = tty->driver_data; + if (portp == NULL) + return; + + if (timeout == 0) + timeout = HZ; + tend = jiffies + timeout; + + while (stl_datastate(portp)) { + if (signal_pending(current)) + break; + msleep_interruptible(20); + if (time_after_eq(jiffies, tend)) + break; + } +} + +/*****************************************************************************/ + +static void stl_shutdown(struct tty_port *port) +{ + struct stlport *portp = container_of(port, struct stlport, port); + stl_disableintrs(portp); + stl_enablerxtx(portp, 0, 0); + stl_flush(portp); + portp->istate = 0; + if (portp->tx.buf != NULL) { + kfree(portp->tx.buf); + portp->tx.buf = NULL; + portp->tx.head = NULL; + portp->tx.tail = NULL; + } +} + +static void stl_close(struct tty_struct *tty, struct file *filp) +{ + struct stlport*portp; + pr_debug("stl_close(tty=%p,filp=%p)\n", tty, filp); + + portp = tty->driver_data; + if(portp == NULL) + return; + tty_port_close(&portp->port, tty, filp); +} + +/*****************************************************************************/ + +/* + * Write routine. Take data and stuff it in to the TX ring queue. + * If transmit interrupts are not running then start them. + */ + +static int stl_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + struct stlport *portp; + unsigned int len, stlen; + unsigned char *chbuf; + char *head, *tail; + + pr_debug("stl_write(tty=%p,buf=%p,count=%d)\n", tty, buf, count); + + portp = tty->driver_data; + if (portp == NULL) + return 0; + if (portp->tx.buf == NULL) + return 0; + +/* + * If copying direct from user space we must cater for page faults, + * causing us to "sleep" here for a while. To handle this copy in all + * the data we need now, into a local buffer. Then when we got it all + * copy it into the TX buffer. + */ + chbuf = (unsigned char *) buf; + + head = portp->tx.head; + tail = portp->tx.tail; + if (head >= tail) { + len = STL_TXBUFSIZE - (head - tail) - 1; + stlen = STL_TXBUFSIZE - (head - portp->tx.buf); + } else { + len = tail - head - 1; + stlen = len; + } + + len = min(len, (unsigned int)count); + count = 0; + while (len > 0) { + stlen = min(len, stlen); + memcpy(head, chbuf, stlen); + len -= stlen; + chbuf += stlen; + count += stlen; + head += stlen; + if (head >= (portp->tx.buf + STL_TXBUFSIZE)) { + head = portp->tx.buf; + stlen = tail - head; + } + } + portp->tx.head = head; + + clear_bit(ASYI_TXLOW, &portp->istate); + stl_startrxtx(portp, -1, 1); + + return count; +} + +/*****************************************************************************/ + +static int stl_putchar(struct tty_struct *tty, unsigned char ch) +{ + struct stlport *portp; + unsigned int len; + char *head, *tail; + + pr_debug("stl_putchar(tty=%p,ch=%x)\n", tty, ch); + + portp = tty->driver_data; + if (portp == NULL) + return -EINVAL; + if (portp->tx.buf == NULL) + return -EINVAL; + + head = portp->tx.head; + tail = portp->tx.tail; + + len = (head >= tail) ? (STL_TXBUFSIZE - (head - tail)) : (tail - head); + len--; + + if (len > 0) { + *head++ = ch; + if (head >= (portp->tx.buf + STL_TXBUFSIZE)) + head = portp->tx.buf; + } + portp->tx.head = head; + return 0; +} + +/*****************************************************************************/ + +/* + * If there are any characters in the buffer then make sure that TX + * interrupts are on and get'em out. Normally used after the putchar + * routine has been called. + */ + +static void stl_flushchars(struct tty_struct *tty) +{ + struct stlport *portp; + + pr_debug("stl_flushchars(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return; + if (portp->tx.buf == NULL) + return; + + stl_startrxtx(portp, -1, 1); +} + +/*****************************************************************************/ + +static int stl_writeroom(struct tty_struct *tty) +{ + struct stlport *portp; + char *head, *tail; + + pr_debug("stl_writeroom(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return 0; + if (portp->tx.buf == NULL) + return 0; + + head = portp->tx.head; + tail = portp->tx.tail; + return (head >= tail) ? (STL_TXBUFSIZE - (head - tail) - 1) : (tail - head - 1); +} + +/*****************************************************************************/ + +/* + * Return number of chars in the TX buffer. Normally we would just + * calculate the number of chars in the buffer and return that, but if + * the buffer is empty and TX interrupts are still on then we return + * that the buffer still has 1 char in it. This way whoever called us + * will not think that ALL chars have drained - since the UART still + * must have some chars in it (we are busy after all). + */ + +static int stl_charsinbuffer(struct tty_struct *tty) +{ + struct stlport *portp; + unsigned int size; + char *head, *tail; + + pr_debug("stl_charsinbuffer(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return 0; + if (portp->tx.buf == NULL) + return 0; + + head = portp->tx.head; + tail = portp->tx.tail; + size = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); + if ((size == 0) && test_bit(ASYI_TXBUSY, &portp->istate)) + size = 1; + return size; +} + +/*****************************************************************************/ + +/* + * Generate the serial struct info. + */ + +static int stl_getserial(struct stlport *portp, struct serial_struct __user *sp) +{ + struct serial_struct sio; + struct stlbrd *brdp; + + pr_debug("stl_getserial(portp=%p,sp=%p)\n", portp, sp); + + memset(&sio, 0, sizeof(struct serial_struct)); + + mutex_lock(&portp->port.mutex); + sio.line = portp->portnr; + sio.port = portp->ioaddr; + sio.flags = portp->port.flags; + sio.baud_base = portp->baud_base; + sio.close_delay = portp->close_delay; + sio.closing_wait = portp->closing_wait; + sio.custom_divisor = portp->custom_divisor; + sio.hub6 = 0; + if (portp->uartp == &stl_cd1400uart) { + sio.type = PORT_CIRRUS; + sio.xmit_fifo_size = CD1400_TXFIFOSIZE; + } else { + sio.type = PORT_UNKNOWN; + sio.xmit_fifo_size = SC26198_TXFIFOSIZE; + } + + brdp = stl_brds[portp->brdnr]; + if (brdp != NULL) + sio.irq = brdp->irq; + mutex_unlock(&portp->port.mutex); + + return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * Set port according to the serial struct info. + * At this point we do not do any auto-configure stuff, so we will + * just quietly ignore any requests to change irq, etc. + */ + +static int stl_setserial(struct tty_struct *tty, struct serial_struct __user *sp) +{ + struct stlport * portp = tty->driver_data; + struct serial_struct sio; + + pr_debug("stl_setserial(portp=%p,sp=%p)\n", portp, sp); + + if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) + return -EFAULT; + mutex_lock(&portp->port.mutex); + if (!capable(CAP_SYS_ADMIN)) { + if ((sio.baud_base != portp->baud_base) || + (sio.close_delay != portp->close_delay) || + ((sio.flags & ~ASYNC_USR_MASK) != + (portp->port.flags & ~ASYNC_USR_MASK))) { + mutex_unlock(&portp->port.mutex); + return -EPERM; + } + } + + portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | + (sio.flags & ASYNC_USR_MASK); + portp->baud_base = sio.baud_base; + portp->close_delay = sio.close_delay; + portp->closing_wait = sio.closing_wait; + portp->custom_divisor = sio.custom_divisor; + mutex_unlock(&portp->port.mutex); + stl_setport(portp, tty->termios); + return 0; +} + +/*****************************************************************************/ + +static int stl_tiocmget(struct tty_struct *tty) +{ + struct stlport *portp; + + portp = tty->driver_data; + if (portp == NULL) + return -ENODEV; + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + + return stl_getsignals(portp); +} + +static int stl_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct stlport *portp; + int rts = -1, dtr = -1; + + portp = tty->driver_data; + if (portp == NULL) + return -ENODEV; + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + + if (set & TIOCM_RTS) + rts = 1; + if (set & TIOCM_DTR) + dtr = 1; + if (clear & TIOCM_RTS) + rts = 0; + if (clear & TIOCM_DTR) + dtr = 0; + + stl_setsignals(portp, dtr, rts); + return 0; +} + +static int stl_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) +{ + struct stlport *portp; + int rc; + void __user *argp = (void __user *)arg; + + pr_debug("stl_ioctl(tty=%p,cmd=%x,arg=%lx)\n", tty, cmd, arg); + + portp = tty->driver_data; + if (portp == NULL) + return -ENODEV; + + if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && + (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) + if (tty->flags & (1 << TTY_IO_ERROR)) + return -EIO; + + rc = 0; + + switch (cmd) { + case TIOCGSERIAL: + rc = stl_getserial(portp, argp); + break; + case TIOCSSERIAL: + rc = stl_setserial(tty, argp); + break; + case COM_GETPORTSTATS: + rc = stl_getportstats(tty, portp, argp); + break; + case COM_CLRPORTSTATS: + rc = stl_clrportstats(portp, argp); + break; + case TIOCSERCONFIG: + case TIOCSERGWILD: + case TIOCSERSWILD: + case TIOCSERGETLSR: + case TIOCSERGSTRUCT: + case TIOCSERGETMULTI: + case TIOCSERSETMULTI: + default: + rc = -ENOIOCTLCMD; + break; + } + return rc; +} + +/*****************************************************************************/ + +/* + * Start the transmitter again. Just turn TX interrupts back on. + */ + +static void stl_start(struct tty_struct *tty) +{ + struct stlport *portp; + + pr_debug("stl_start(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return; + stl_startrxtx(portp, -1, 1); +} + +/*****************************************************************************/ + +static void stl_settermios(struct tty_struct *tty, struct ktermios *old) +{ + struct stlport *portp; + struct ktermios *tiosp; + + pr_debug("stl_settermios(tty=%p,old=%p)\n", tty, old); + + portp = tty->driver_data; + if (portp == NULL) + return; + + tiosp = tty->termios; + if ((tiosp->c_cflag == old->c_cflag) && + (tiosp->c_iflag == old->c_iflag)) + return; + + stl_setport(portp, tiosp); + stl_setsignals(portp, ((tiosp->c_cflag & (CBAUD & ~CBAUDEX)) ? 1 : 0), + -1); + if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) { + tty->hw_stopped = 0; + stl_start(tty); + } + if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) + wake_up_interruptible(&portp->port.open_wait); +} + +/*****************************************************************************/ + +/* + * Attempt to flow control who ever is sending us data. Based on termios + * settings use software or/and hardware flow control. + */ + +static void stl_throttle(struct tty_struct *tty) +{ + struct stlport *portp; + + pr_debug("stl_throttle(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return; + stl_flowctrl(portp, 0); +} + +/*****************************************************************************/ + +/* + * Unflow control the device sending us data... + */ + +static void stl_unthrottle(struct tty_struct *tty) +{ + struct stlport *portp; + + pr_debug("stl_unthrottle(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return; + stl_flowctrl(portp, 1); +} + +/*****************************************************************************/ + +/* + * Stop the transmitter. Basically to do this we will just turn TX + * interrupts off. + */ + +static void stl_stop(struct tty_struct *tty) +{ + struct stlport *portp; + + pr_debug("stl_stop(tty=%p)\n", tty); + + portp = tty->driver_data; + if (portp == NULL) + return; + stl_startrxtx(portp, -1, 0); +} + +/*****************************************************************************/ + +/* + * Hangup this port. This is pretty much like closing the port, only + * a little more brutal. No waiting for data to drain. Shutdown the + * port and maybe drop signals. + */ + +static void stl_hangup(struct tty_struct *tty) +{ + struct stlport *portp = tty->driver_data; + pr_debug("stl_hangup(tty=%p)\n", tty); + + if (portp == NULL) + return; + tty_port_hangup(&portp->port); +} + +/*****************************************************************************/ + +static int stl_breakctl(struct tty_struct *tty, int state) +{ + struct stlport *portp; + + pr_debug("stl_breakctl(tty=%p,state=%d)\n", tty, state); + + portp = tty->driver_data; + if (portp == NULL) + return -EINVAL; + + stl_sendbreak(portp, ((state == -1) ? 1 : 2)); + return 0; +} + +/*****************************************************************************/ + +static void stl_sendxchar(struct tty_struct *tty, char ch) +{ + struct stlport *portp; + + pr_debug("stl_sendxchar(tty=%p,ch=%x)\n", tty, ch); + + portp = tty->driver_data; + if (portp == NULL) + return; + + if (ch == STOP_CHAR(tty)) + stl_sendflow(portp, 0); + else if (ch == START_CHAR(tty)) + stl_sendflow(portp, 1); + else + stl_putchar(tty, ch); +} + +static void stl_portinfo(struct seq_file *m, struct stlport *portp, int portnr) +{ + int sigs; + char sep; + + seq_printf(m, "%d: uart:%s tx:%d rx:%d", + portnr, (portp->hwid == 1) ? "SC26198" : "CD1400", + (int) portp->stats.txtotal, (int) portp->stats.rxtotal); + + if (portp->stats.rxframing) + seq_printf(m, " fe:%d", (int) portp->stats.rxframing); + if (portp->stats.rxparity) + seq_printf(m, " pe:%d", (int) portp->stats.rxparity); + if (portp->stats.rxbreaks) + seq_printf(m, " brk:%d", (int) portp->stats.rxbreaks); + if (portp->stats.rxoverrun) + seq_printf(m, " oe:%d", (int) portp->stats.rxoverrun); + + sigs = stl_getsignals(portp); + sep = ' '; + if (sigs & TIOCM_RTS) { + seq_printf(m, "%c%s", sep, "RTS"); + sep = '|'; + } + if (sigs & TIOCM_CTS) { + seq_printf(m, "%c%s", sep, "CTS"); + sep = '|'; + } + if (sigs & TIOCM_DTR) { + seq_printf(m, "%c%s", sep, "DTR"); + sep = '|'; + } + if (sigs & TIOCM_CD) { + seq_printf(m, "%c%s", sep, "DCD"); + sep = '|'; + } + if (sigs & TIOCM_DSR) { + seq_printf(m, "%c%s", sep, "DSR"); + sep = '|'; + } + seq_putc(m, '\n'); +} + +/*****************************************************************************/ + +/* + * Port info, read from the /proc file system. + */ + +static int stl_proc_show(struct seq_file *m, void *v) +{ + struct stlbrd *brdp; + struct stlpanel *panelp; + struct stlport *portp; + unsigned int brdnr, panelnr, portnr; + int totalport; + + totalport = 0; + + seq_printf(m, "%s: version %s\n", stl_drvtitle, stl_drvversion); + +/* + * We scan through for each board, panel and port. The offset is + * calculated on the fly, and irrelevant ports are skipped. + */ + for (brdnr = 0; brdnr < stl_nrbrds; brdnr++) { + brdp = stl_brds[brdnr]; + if (brdp == NULL) + continue; + if (brdp->state == 0) + continue; + + totalport = brdnr * STL_MAXPORTS; + for (panelnr = 0; panelnr < brdp->nrpanels; panelnr++) { + panelp = brdp->panels[panelnr]; + if (panelp == NULL) + continue; + + for (portnr = 0; portnr < panelp->nrports; portnr++, + totalport++) { + portp = panelp->ports[portnr]; + if (portp == NULL) + continue; + stl_portinfo(m, portp, totalport); + } + } + } + return 0; +} + +static int stl_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, stl_proc_show, NULL); +} + +static const struct file_operations stl_proc_fops = { + .owner = THIS_MODULE, + .open = stl_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/*****************************************************************************/ + +/* + * All board interrupts are vectored through here first. This code then + * calls off to the approrpriate board interrupt handlers. + */ + +static irqreturn_t stl_intr(int irq, void *dev_id) +{ + struct stlbrd *brdp = dev_id; + + pr_debug("stl_intr(brdp=%p,irq=%d)\n", brdp, brdp->irq); + + return IRQ_RETVAL((* brdp->isr)(brdp)); +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for EasyIO board types. + */ + +static int stl_eiointr(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + unsigned int iobase; + int handled = 0; + + spin_lock(&brd_lock); + panelp = brdp->panels[0]; + iobase = panelp->iobase; + while (inb(brdp->iostatus) & EIO_INTRPEND) { + handled = 1; + (* panelp->isr)(panelp, iobase); + } + spin_unlock(&brd_lock); + return handled; +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for ECH-AT board types. + */ + +static int stl_echatintr(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + unsigned int ioaddr, bnknr; + int handled = 0; + + outb((brdp->ioctrlval | ECH_BRDENABLE), brdp->ioctrl); + + while (inb(brdp->iostatus) & ECH_INTRPEND) { + handled = 1; + for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { + ioaddr = brdp->bnkstataddr[bnknr]; + if (inb(ioaddr) & ECH_PNLINTRPEND) { + panelp = brdp->bnk2panel[bnknr]; + (* panelp->isr)(panelp, (ioaddr & 0xfffc)); + } + } + } + + outb((brdp->ioctrlval | ECH_BRDDISABLE), brdp->ioctrl); + + return handled; +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for ECH-MCA board types. + */ + +static int stl_echmcaintr(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + unsigned int ioaddr, bnknr; + int handled = 0; + + while (inb(brdp->iostatus) & ECH_INTRPEND) { + handled = 1; + for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { + ioaddr = brdp->bnkstataddr[bnknr]; + if (inb(ioaddr) & ECH_PNLINTRPEND) { + panelp = brdp->bnk2panel[bnknr]; + (* panelp->isr)(panelp, (ioaddr & 0xfffc)); + } + } + } + return handled; +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for ECH-PCI board types. + */ + +static int stl_echpciintr(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + unsigned int ioaddr, bnknr, recheck; + int handled = 0; + + while (1) { + recheck = 0; + for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { + outb(brdp->bnkpageaddr[bnknr], brdp->ioctrl); + ioaddr = brdp->bnkstataddr[bnknr]; + if (inb(ioaddr) & ECH_PNLINTRPEND) { + panelp = brdp->bnk2panel[bnknr]; + (* panelp->isr)(panelp, (ioaddr & 0xfffc)); + recheck++; + handled = 1; + } + } + if (! recheck) + break; + } + return handled; +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for ECH-8/64-PCI board types. + */ + +static int stl_echpci64intr(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + unsigned int ioaddr, bnknr; + int handled = 0; + + while (inb(brdp->ioctrl) & 0x1) { + handled = 1; + for (bnknr = 0; bnknr < brdp->nrbnks; bnknr++) { + ioaddr = brdp->bnkstataddr[bnknr]; + if (inb(ioaddr) & ECH_PNLINTRPEND) { + panelp = brdp->bnk2panel[bnknr]; + (* panelp->isr)(panelp, (ioaddr & 0xfffc)); + } + } + } + + return handled; +} + +/*****************************************************************************/ + +/* + * Initialize all the ports on a panel. + */ + +static int __devinit stl_initports(struct stlbrd *brdp, struct stlpanel *panelp) +{ + struct stlport *portp; + unsigned int i; + int chipmask; + + pr_debug("stl_initports(brdp=%p,panelp=%p)\n", brdp, panelp); + + chipmask = stl_panelinit(brdp, panelp); + +/* + * All UART's are initialized (if found!). Now go through and setup + * each ports data structures. + */ + for (i = 0; i < panelp->nrports; i++) { + portp = kzalloc(sizeof(struct stlport), GFP_KERNEL); + if (!portp) { + printk("STALLION: failed to allocate memory " + "(size=%Zd)\n", sizeof(struct stlport)); + break; + } + tty_port_init(&portp->port); + portp->port.ops = &stl_port_ops; + portp->magic = STL_PORTMAGIC; + portp->portnr = i; + portp->brdnr = panelp->brdnr; + portp->panelnr = panelp->panelnr; + portp->uartp = panelp->uartp; + portp->clk = brdp->clk; + portp->baud_base = STL_BAUDBASE; + portp->close_delay = STL_CLOSEDELAY; + portp->closing_wait = 30 * HZ; + init_waitqueue_head(&portp->port.open_wait); + init_waitqueue_head(&portp->port.close_wait); + portp->stats.brd = portp->brdnr; + portp->stats.panel = portp->panelnr; + portp->stats.port = portp->portnr; + panelp->ports[i] = portp; + stl_portinit(brdp, panelp, portp); + } + + return 0; +} + +static void stl_cleanup_panels(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + struct stlport *portp; + unsigned int j, k; + struct tty_struct *tty; + + for (j = 0; j < STL_MAXPANELS; j++) { + panelp = brdp->panels[j]; + if (panelp == NULL) + continue; + for (k = 0; k < STL_PORTSPERPANEL; k++) { + portp = panelp->ports[k]; + if (portp == NULL) + continue; + tty = tty_port_tty_get(&portp->port); + if (tty != NULL) { + stl_hangup(tty); + tty_kref_put(tty); + } + kfree(portp->tx.buf); + kfree(portp); + } + kfree(panelp); + } +} + +/*****************************************************************************/ + +/* + * Try to find and initialize an EasyIO board. + */ + +static int __devinit stl_initeio(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + unsigned int status; + char *name; + int retval; + + pr_debug("stl_initeio(brdp=%p)\n", brdp); + + brdp->ioctrl = brdp->ioaddr1 + 1; + brdp->iostatus = brdp->ioaddr1 + 2; + + status = inb(brdp->iostatus); + if ((status & EIO_IDBITMASK) == EIO_MK3) + brdp->ioctrl++; + +/* + * Handle board specific stuff now. The real difference is PCI + * or not PCI. + */ + if (brdp->brdtype == BRD_EASYIOPCI) { + brdp->iosize1 = 0x80; + brdp->iosize2 = 0x80; + name = "serial(EIO-PCI)"; + outb(0x41, (brdp->ioaddr2 + 0x4c)); + } else { + brdp->iosize1 = 8; + name = "serial(EIO)"; + if ((brdp->irq < 0) || (brdp->irq > 15) || + (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { + printk("STALLION: invalid irq=%d for brd=%d\n", + brdp->irq, brdp->brdnr); + retval = -EINVAL; + goto err; + } + outb((stl_vecmap[brdp->irq] | EIO_0WS | + ((brdp->irqtype) ? EIO_INTLEVEL : EIO_INTEDGE)), + brdp->ioctrl); + } + + retval = -EBUSY; + if (!request_region(brdp->ioaddr1, brdp->iosize1, name)) { + printk(KERN_WARNING "STALLION: Warning, board %d I/O address " + "%x conflicts with another device\n", brdp->brdnr, + brdp->ioaddr1); + goto err; + } + + if (brdp->iosize2 > 0) + if (!request_region(brdp->ioaddr2, brdp->iosize2, name)) { + printk(KERN_WARNING "STALLION: Warning, board %d I/O " + "address %x conflicts with another device\n", + brdp->brdnr, brdp->ioaddr2); + printk(KERN_WARNING "STALLION: Warning, also " + "releasing board %d I/O address %x \n", + brdp->brdnr, brdp->ioaddr1); + goto err_rel1; + } + +/* + * Everything looks OK, so let's go ahead and probe for the hardware. + */ + brdp->clk = CD1400_CLK; + brdp->isr = stl_eiointr; + + retval = -ENODEV; + switch (status & EIO_IDBITMASK) { + case EIO_8PORTM: + brdp->clk = CD1400_CLK8M; + /* fall thru */ + case EIO_8PORTRS: + case EIO_8PORTDI: + brdp->nrports = 8; + break; + case EIO_4PORTRS: + brdp->nrports = 4; + break; + case EIO_MK3: + switch (status & EIO_BRDMASK) { + case ID_BRD4: + brdp->nrports = 4; + break; + case ID_BRD8: + brdp->nrports = 8; + break; + case ID_BRD16: + brdp->nrports = 16; + break; + default: + goto err_rel2; + } + break; + default: + goto err_rel2; + } + +/* + * We have verified that the board is actually present, so now we + * can complete the setup. + */ + + panelp = kzalloc(sizeof(struct stlpanel), GFP_KERNEL); + if (!panelp) { + printk(KERN_WARNING "STALLION: failed to allocate memory " + "(size=%Zd)\n", sizeof(struct stlpanel)); + retval = -ENOMEM; + goto err_rel2; + } + + panelp->magic = STL_PANELMAGIC; + panelp->brdnr = brdp->brdnr; + panelp->panelnr = 0; + panelp->nrports = brdp->nrports; + panelp->iobase = brdp->ioaddr1; + panelp->hwid = status; + if ((status & EIO_IDBITMASK) == EIO_MK3) { + panelp->uartp = &stl_sc26198uart; + panelp->isr = stl_sc26198intr; + } else { + panelp->uartp = &stl_cd1400uart; + panelp->isr = stl_cd1400eiointr; + } + + brdp->panels[0] = panelp; + brdp->nrpanels = 1; + brdp->state |= BRD_FOUND; + brdp->hwid = status; + if (request_irq(brdp->irq, stl_intr, IRQF_SHARED, name, brdp) != 0) { + printk("STALLION: failed to register interrupt " + "routine for %s irq=%d\n", name, brdp->irq); + retval = -ENODEV; + goto err_fr; + } + + return 0; +err_fr: + stl_cleanup_panels(brdp); +err_rel2: + if (brdp->iosize2 > 0) + release_region(brdp->ioaddr2, brdp->iosize2); +err_rel1: + release_region(brdp->ioaddr1, brdp->iosize1); +err: + return retval; +} + +/*****************************************************************************/ + +/* + * Try to find an ECH board and initialize it. This code is capable of + * dealing with all types of ECH board. + */ + +static int __devinit stl_initech(struct stlbrd *brdp) +{ + struct stlpanel *panelp; + unsigned int status, nxtid, ioaddr, conflict, panelnr, banknr, i; + int retval; + char *name; + + pr_debug("stl_initech(brdp=%p)\n", brdp); + + status = 0; + conflict = 0; + +/* + * Set up the initial board register contents for boards. This varies a + * bit between the different board types. So we need to handle each + * separately. Also do a check that the supplied IRQ is good. + */ + switch (brdp->brdtype) { + + case BRD_ECH: + brdp->isr = stl_echatintr; + brdp->ioctrl = brdp->ioaddr1 + 1; + brdp->iostatus = brdp->ioaddr1 + 1; + status = inb(brdp->iostatus); + if ((status & ECH_IDBITMASK) != ECH_ID) { + retval = -ENODEV; + goto err; + } + if ((brdp->irq < 0) || (brdp->irq > 15) || + (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { + printk("STALLION: invalid irq=%d for brd=%d\n", + brdp->irq, brdp->brdnr); + retval = -EINVAL; + goto err; + } + status = ((brdp->ioaddr2 & ECH_ADDR2MASK) >> 1); + status |= (stl_vecmap[brdp->irq] << 1); + outb((status | ECH_BRDRESET), brdp->ioaddr1); + brdp->ioctrlval = ECH_INTENABLE | + ((brdp->irqtype) ? ECH_INTLEVEL : ECH_INTEDGE); + for (i = 0; i < 10; i++) + outb((brdp->ioctrlval | ECH_BRDENABLE), brdp->ioctrl); + brdp->iosize1 = 2; + brdp->iosize2 = 32; + name = "serial(EC8/32)"; + outb(status, brdp->ioaddr1); + break; + + case BRD_ECHMC: + brdp->isr = stl_echmcaintr; + brdp->ioctrl = brdp->ioaddr1 + 0x20; + brdp->iostatus = brdp->ioctrl; + status = inb(brdp->iostatus); + if ((status & ECH_IDBITMASK) != ECH_ID) { + retval = -ENODEV; + goto err; + } + if ((brdp->irq < 0) || (brdp->irq > 15) || + (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) { + printk("STALLION: invalid irq=%d for brd=%d\n", + brdp->irq, brdp->brdnr); + retval = -EINVAL; + goto err; + } + outb(ECHMC_BRDRESET, brdp->ioctrl); + outb(ECHMC_INTENABLE, brdp->ioctrl); + brdp->iosize1 = 64; + name = "serial(EC8/32-MC)"; + break; + + case BRD_ECHPCI: + brdp->isr = stl_echpciintr; + brdp->ioctrl = brdp->ioaddr1 + 2; + brdp->iosize1 = 4; + brdp->iosize2 = 8; + name = "serial(EC8/32-PCI)"; + break; + + case BRD_ECH64PCI: + brdp->isr = stl_echpci64intr; + brdp->ioctrl = brdp->ioaddr2 + 0x40; + outb(0x43, (brdp->ioaddr1 + 0x4c)); + brdp->iosize1 = 0x80; + brdp->iosize2 = 0x80; + name = "serial(EC8/64-PCI)"; + break; + + default: + printk("STALLION: unknown board type=%d\n", brdp->brdtype); + retval = -EINVAL; + goto err; + } + +/* + * Check boards for possible IO address conflicts and return fail status + * if an IO conflict found. + */ + retval = -EBUSY; + if (!request_region(brdp->ioaddr1, brdp->iosize1, name)) { + printk(KERN_WARNING "STALLION: Warning, board %d I/O address " + "%x conflicts with another device\n", brdp->brdnr, + brdp->ioaddr1); + goto err; + } + + if (brdp->iosize2 > 0) + if (!request_region(brdp->ioaddr2, brdp->iosize2, name)) { + printk(KERN_WARNING "STALLION: Warning, board %d I/O " + "address %x conflicts with another device\n", + brdp->brdnr, brdp->ioaddr2); + printk(KERN_WARNING "STALLION: Warning, also " + "releasing board %d I/O address %x \n", + brdp->brdnr, brdp->ioaddr1); + goto err_rel1; + } + +/* + * Scan through the secondary io address space looking for panels. + * As we find'em allocate and initialize panel structures for each. + */ + brdp->clk = CD1400_CLK; + brdp->hwid = status; + + ioaddr = brdp->ioaddr2; + banknr = 0; + panelnr = 0; + nxtid = 0; + + for (i = 0; i < STL_MAXPANELS; i++) { + if (brdp->brdtype == BRD_ECHPCI) { + outb(nxtid, brdp->ioctrl); + ioaddr = brdp->ioaddr2; + } + status = inb(ioaddr + ECH_PNLSTATUS); + if ((status & ECH_PNLIDMASK) != nxtid) + break; + panelp = kzalloc(sizeof(struct stlpanel), GFP_KERNEL); + if (!panelp) { + printk("STALLION: failed to allocate memory " + "(size=%Zd)\n", sizeof(struct stlpanel)); + retval = -ENOMEM; + goto err_fr; + } + panelp->magic = STL_PANELMAGIC; + panelp->brdnr = brdp->brdnr; + panelp->panelnr = panelnr; + panelp->iobase = ioaddr; + panelp->pagenr = nxtid; + panelp->hwid = status; + brdp->bnk2panel[banknr] = panelp; + brdp->bnkpageaddr[banknr] = nxtid; + brdp->bnkstataddr[banknr++] = ioaddr + ECH_PNLSTATUS; + + if (status & ECH_PNLXPID) { + panelp->uartp = &stl_sc26198uart; + panelp->isr = stl_sc26198intr; + if (status & ECH_PNL16PORT) { + panelp->nrports = 16; + brdp->bnk2panel[banknr] = panelp; + brdp->bnkpageaddr[banknr] = nxtid; + brdp->bnkstataddr[banknr++] = ioaddr + 4 + + ECH_PNLSTATUS; + } else + panelp->nrports = 8; + } else { + panelp->uartp = &stl_cd1400uart; + panelp->isr = stl_cd1400echintr; + if (status & ECH_PNL16PORT) { + panelp->nrports = 16; + panelp->ackmask = 0x80; + if (brdp->brdtype != BRD_ECHPCI) + ioaddr += EREG_BANKSIZE; + brdp->bnk2panel[banknr] = panelp; + brdp->bnkpageaddr[banknr] = ++nxtid; + brdp->bnkstataddr[banknr++] = ioaddr + + ECH_PNLSTATUS; + } else { + panelp->nrports = 8; + panelp->ackmask = 0xc0; + } + } + + nxtid++; + ioaddr += EREG_BANKSIZE; + brdp->nrports += panelp->nrports; + brdp->panels[panelnr++] = panelp; + if ((brdp->brdtype != BRD_ECHPCI) && + (ioaddr >= (brdp->ioaddr2 + brdp->iosize2))) { + retval = -EINVAL; + goto err_fr; + } + } + + brdp->nrpanels = panelnr; + brdp->nrbnks = banknr; + if (brdp->brdtype == BRD_ECH) + outb((brdp->ioctrlval | ECH_BRDDISABLE), brdp->ioctrl); + + brdp->state |= BRD_FOUND; + if (request_irq(brdp->irq, stl_intr, IRQF_SHARED, name, brdp) != 0) { + printk("STALLION: failed to register interrupt " + "routine for %s irq=%d\n", name, brdp->irq); + retval = -ENODEV; + goto err_fr; + } + + return 0; +err_fr: + stl_cleanup_panels(brdp); + if (brdp->iosize2 > 0) + release_region(brdp->ioaddr2, brdp->iosize2); +err_rel1: + release_region(brdp->ioaddr1, brdp->iosize1); +err: + return retval; +} + +/*****************************************************************************/ + +/* + * Initialize and configure the specified board. + * Scan through all the boards in the configuration and see what we + * can find. Handle EIO and the ECH boards a little differently here + * since the initial search and setup is very different. + */ + +static int __devinit stl_brdinit(struct stlbrd *brdp) +{ + int i, retval; + + pr_debug("stl_brdinit(brdp=%p)\n", brdp); + + switch (brdp->brdtype) { + case BRD_EASYIO: + case BRD_EASYIOPCI: + retval = stl_initeio(brdp); + if (retval) + goto err; + break; + case BRD_ECH: + case BRD_ECHMC: + case BRD_ECHPCI: + case BRD_ECH64PCI: + retval = stl_initech(brdp); + if (retval) + goto err; + break; + default: + printk("STALLION: board=%d is unknown board type=%d\n", + brdp->brdnr, brdp->brdtype); + retval = -ENODEV; + goto err; + } + + if ((brdp->state & BRD_FOUND) == 0) { + printk("STALLION: %s board not found, board=%d io=%x irq=%d\n", + stl_brdnames[brdp->brdtype], brdp->brdnr, + brdp->ioaddr1, brdp->irq); + goto err_free; + } + + for (i = 0; i < STL_MAXPANELS; i++) + if (brdp->panels[i] != NULL) + stl_initports(brdp, brdp->panels[i]); + + printk("STALLION: %s found, board=%d io=%x irq=%d " + "nrpanels=%d nrports=%d\n", stl_brdnames[brdp->brdtype], + brdp->brdnr, brdp->ioaddr1, brdp->irq, brdp->nrpanels, + brdp->nrports); + + return 0; +err_free: + free_irq(brdp->irq, brdp); + + stl_cleanup_panels(brdp); + + release_region(brdp->ioaddr1, brdp->iosize1); + if (brdp->iosize2 > 0) + release_region(brdp->ioaddr2, brdp->iosize2); +err: + return retval; +} + +/*****************************************************************************/ + +/* + * Find the next available board number that is free. + */ + +static int __devinit stl_getbrdnr(void) +{ + unsigned int i; + + for (i = 0; i < STL_MAXBRDS; i++) + if (stl_brds[i] == NULL) { + if (i >= stl_nrbrds) + stl_nrbrds = i + 1; + return i; + } + + return -1; +} + +/*****************************************************************************/ +/* + * We have a Stallion board. Allocate a board structure and + * initialize it. Read its IO and IRQ resources from PCI + * configuration space. + */ + +static int __devinit stl_pciprobe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct stlbrd *brdp; + unsigned int i, brdtype = ent->driver_data; + int brdnr, retval = -ENODEV; + + if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) + goto err; + + retval = pci_enable_device(pdev); + if (retval) + goto err; + brdp = stl_allocbrd(); + if (brdp == NULL) { + retval = -ENOMEM; + goto err; + } + mutex_lock(&stl_brdslock); + brdnr = stl_getbrdnr(); + if (brdnr < 0) { + dev_err(&pdev->dev, "too many boards found, " + "maximum supported %d\n", STL_MAXBRDS); + mutex_unlock(&stl_brdslock); + retval = -ENODEV; + goto err_fr; + } + brdp->brdnr = (unsigned int)brdnr; + stl_brds[brdp->brdnr] = brdp; + mutex_unlock(&stl_brdslock); + + brdp->brdtype = brdtype; + brdp->state |= STL_PROBED; + +/* + * We have all resources from the board, so let's setup the actual + * board structure now. + */ + switch (brdtype) { + case BRD_ECHPCI: + brdp->ioaddr2 = pci_resource_start(pdev, 0); + brdp->ioaddr1 = pci_resource_start(pdev, 1); + break; + case BRD_ECH64PCI: + brdp->ioaddr2 = pci_resource_start(pdev, 2); + brdp->ioaddr1 = pci_resource_start(pdev, 1); + break; + case BRD_EASYIOPCI: + brdp->ioaddr1 = pci_resource_start(pdev, 2); + brdp->ioaddr2 = pci_resource_start(pdev, 1); + break; + default: + dev_err(&pdev->dev, "unknown PCI board type=%u\n", brdtype); + break; + } + + brdp->irq = pdev->irq; + retval = stl_brdinit(brdp); + if (retval) + goto err_null; + + pci_set_drvdata(pdev, brdp); + + for (i = 0; i < brdp->nrports; i++) + tty_register_device(stl_serial, + brdp->brdnr * STL_MAXPORTS + i, &pdev->dev); + + return 0; +err_null: + stl_brds[brdp->brdnr] = NULL; +err_fr: + kfree(brdp); +err: + return retval; +} + +static void __devexit stl_pciremove(struct pci_dev *pdev) +{ + struct stlbrd *brdp = pci_get_drvdata(pdev); + unsigned int i; + + free_irq(brdp->irq, brdp); + + stl_cleanup_panels(brdp); + + release_region(brdp->ioaddr1, brdp->iosize1); + if (brdp->iosize2 > 0) + release_region(brdp->ioaddr2, brdp->iosize2); + + for (i = 0; i < brdp->nrports; i++) + tty_unregister_device(stl_serial, + brdp->brdnr * STL_MAXPORTS + i); + + stl_brds[brdp->brdnr] = NULL; + kfree(brdp); +} + +static struct pci_driver stl_pcidriver = { + .name = "stallion", + .id_table = stl_pcibrds, + .probe = stl_pciprobe, + .remove = __devexit_p(stl_pciremove) +}; + +/*****************************************************************************/ + +/* + * Return the board stats structure to user app. + */ + +static int stl_getbrdstats(combrd_t __user *bp) +{ + combrd_t stl_brdstats; + struct stlbrd *brdp; + struct stlpanel *panelp; + unsigned int i; + + if (copy_from_user(&stl_brdstats, bp, sizeof(combrd_t))) + return -EFAULT; + if (stl_brdstats.brd >= STL_MAXBRDS) + return -ENODEV; + brdp = stl_brds[stl_brdstats.brd]; + if (brdp == NULL) + return -ENODEV; + + memset(&stl_brdstats, 0, sizeof(combrd_t)); + stl_brdstats.brd = brdp->brdnr; + stl_brdstats.type = brdp->brdtype; + stl_brdstats.hwid = brdp->hwid; + stl_brdstats.state = brdp->state; + stl_brdstats.ioaddr = brdp->ioaddr1; + stl_brdstats.ioaddr2 = brdp->ioaddr2; + stl_brdstats.irq = brdp->irq; + stl_brdstats.nrpanels = brdp->nrpanels; + stl_brdstats.nrports = brdp->nrports; + for (i = 0; i < brdp->nrpanels; i++) { + panelp = brdp->panels[i]; + stl_brdstats.panels[i].panel = i; + stl_brdstats.panels[i].hwid = panelp->hwid; + stl_brdstats.panels[i].nrports = panelp->nrports; + } + + return copy_to_user(bp, &stl_brdstats, sizeof(combrd_t)) ? -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * Resolve the referenced port number into a port struct pointer. + */ + +static struct stlport *stl_getport(int brdnr, int panelnr, int portnr) +{ + struct stlbrd *brdp; + struct stlpanel *panelp; + + if (brdnr < 0 || brdnr >= STL_MAXBRDS) + return NULL; + brdp = stl_brds[brdnr]; + if (brdp == NULL) + return NULL; + if (panelnr < 0 || (unsigned int)panelnr >= brdp->nrpanels) + return NULL; + panelp = brdp->panels[panelnr]; + if (panelp == NULL) + return NULL; + if (portnr < 0 || (unsigned int)portnr >= panelp->nrports) + return NULL; + return panelp->ports[portnr]; +} + +/*****************************************************************************/ + +/* + * Return the port stats structure to user app. A NULL port struct + * pointer passed in means that we need to find out from the app + * what port to get stats for (used through board control device). + */ + +static int stl_getportstats(struct tty_struct *tty, struct stlport *portp, comstats_t __user *cp) +{ + comstats_t stl_comstats; + unsigned char *head, *tail; + unsigned long flags; + + if (!portp) { + if (copy_from_user(&stl_comstats, cp, sizeof(comstats_t))) + return -EFAULT; + portp = stl_getport(stl_comstats.brd, stl_comstats.panel, + stl_comstats.port); + if (portp == NULL) + return -ENODEV; + } + + mutex_lock(&portp->port.mutex); + portp->stats.state = portp->istate; + portp->stats.flags = portp->port.flags; + portp->stats.hwid = portp->hwid; + + portp->stats.ttystate = 0; + portp->stats.cflags = 0; + portp->stats.iflags = 0; + portp->stats.oflags = 0; + portp->stats.lflags = 0; + portp->stats.rxbuffered = 0; + + spin_lock_irqsave(&stallion_lock, flags); + if (tty != NULL && portp->port.tty == tty) { + portp->stats.ttystate = tty->flags; + /* No longer available as a statistic */ + portp->stats.rxbuffered = 1; /*tty->flip.count; */ + if (tty->termios != NULL) { + portp->stats.cflags = tty->termios->c_cflag; + portp->stats.iflags = tty->termios->c_iflag; + portp->stats.oflags = tty->termios->c_oflag; + portp->stats.lflags = tty->termios->c_lflag; + } + } + spin_unlock_irqrestore(&stallion_lock, flags); + + head = portp->tx.head; + tail = portp->tx.tail; + portp->stats.txbuffered = (head >= tail) ? (head - tail) : + (STL_TXBUFSIZE - (tail - head)); + + portp->stats.signals = (unsigned long) stl_getsignals(portp); + mutex_unlock(&portp->port.mutex); + + return copy_to_user(cp, &portp->stats, + sizeof(comstats_t)) ? -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * Clear the port stats structure. We also return it zeroed out... + */ + +static int stl_clrportstats(struct stlport *portp, comstats_t __user *cp) +{ + comstats_t stl_comstats; + + if (!portp) { + if (copy_from_user(&stl_comstats, cp, sizeof(comstats_t))) + return -EFAULT; + portp = stl_getport(stl_comstats.brd, stl_comstats.panel, + stl_comstats.port); + if (portp == NULL) + return -ENODEV; + } + + mutex_lock(&portp->port.mutex); + memset(&portp->stats, 0, sizeof(comstats_t)); + portp->stats.brd = portp->brdnr; + portp->stats.panel = portp->panelnr; + portp->stats.port = portp->portnr; + mutex_unlock(&portp->port.mutex); + return copy_to_user(cp, &portp->stats, + sizeof(comstats_t)) ? -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * Return the entire driver ports structure to a user app. + */ + +static int stl_getportstruct(struct stlport __user *arg) +{ + struct stlport stl_dummyport; + struct stlport *portp; + + if (copy_from_user(&stl_dummyport, arg, sizeof(struct stlport))) + return -EFAULT; + portp = stl_getport(stl_dummyport.brdnr, stl_dummyport.panelnr, + stl_dummyport.portnr); + if (!portp) + return -ENODEV; + return copy_to_user(arg, portp, sizeof(struct stlport)) ? -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * Return the entire driver board structure to a user app. + */ + +static int stl_getbrdstruct(struct stlbrd __user *arg) +{ + struct stlbrd stl_dummybrd; + struct stlbrd *brdp; + + if (copy_from_user(&stl_dummybrd, arg, sizeof(struct stlbrd))) + return -EFAULT; + if (stl_dummybrd.brdnr >= STL_MAXBRDS) + return -ENODEV; + brdp = stl_brds[stl_dummybrd.brdnr]; + if (!brdp) + return -ENODEV; + return copy_to_user(arg, brdp, sizeof(struct stlbrd)) ? -EFAULT : 0; +} + +/*****************************************************************************/ + +/* + * The "staliomem" device is also required to do some special operations + * on the board and/or ports. In this driver it is mostly used for stats + * collection. + */ + +static long stl_memioctl(struct file *fp, unsigned int cmd, unsigned long arg) +{ + int brdnr, rc; + void __user *argp = (void __user *)arg; + + pr_debug("stl_memioctl(fp=%p,cmd=%x,arg=%lx)\n", fp, cmd,arg); + + brdnr = iminor(fp->f_dentry->d_inode); + if (brdnr >= STL_MAXBRDS) + return -ENODEV; + rc = 0; + + switch (cmd) { + case COM_GETPORTSTATS: + rc = stl_getportstats(NULL, NULL, argp); + break; + case COM_CLRPORTSTATS: + rc = stl_clrportstats(NULL, argp); + break; + case COM_GETBRDSTATS: + rc = stl_getbrdstats(argp); + break; + case COM_READPORT: + rc = stl_getportstruct(argp); + break; + case COM_READBOARD: + rc = stl_getbrdstruct(argp); + break; + default: + rc = -ENOIOCTLCMD; + break; + } + return rc; +} + +static const struct tty_operations stl_ops = { + .open = stl_open, + .close = stl_close, + .write = stl_write, + .put_char = stl_putchar, + .flush_chars = stl_flushchars, + .write_room = stl_writeroom, + .chars_in_buffer = stl_charsinbuffer, + .ioctl = stl_ioctl, + .set_termios = stl_settermios, + .throttle = stl_throttle, + .unthrottle = stl_unthrottle, + .stop = stl_stop, + .start = stl_start, + .hangup = stl_hangup, + .flush_buffer = stl_flushbuffer, + .break_ctl = stl_breakctl, + .wait_until_sent = stl_waituntilsent, + .send_xchar = stl_sendxchar, + .tiocmget = stl_tiocmget, + .tiocmset = stl_tiocmset, + .proc_fops = &stl_proc_fops, +}; + +static const struct tty_port_operations stl_port_ops = { + .carrier_raised = stl_carrier_raised, + .dtr_rts = stl_dtr_rts, + .activate = stl_activate, + .shutdown = stl_shutdown, +}; + +/*****************************************************************************/ +/* CD1400 HARDWARE FUNCTIONS */ +/*****************************************************************************/ + +/* + * These functions get/set/update the registers of the cd1400 UARTs. + * Access to the cd1400 registers is via an address/data io port pair. + * (Maybe should make this inline...) + */ + +static int stl_cd1400getreg(struct stlport *portp, int regnr) +{ + outb((regnr + portp->uartaddr), portp->ioaddr); + return inb(portp->ioaddr + EREG_DATA); +} + +static void stl_cd1400setreg(struct stlport *portp, int regnr, int value) +{ + outb(regnr + portp->uartaddr, portp->ioaddr); + outb(value, portp->ioaddr + EREG_DATA); +} + +static int stl_cd1400updatereg(struct stlport *portp, int regnr, int value) +{ + outb(regnr + portp->uartaddr, portp->ioaddr); + if (inb(portp->ioaddr + EREG_DATA) != value) { + outb(value, portp->ioaddr + EREG_DATA); + return 1; + } + return 0; +} + +/*****************************************************************************/ + +/* + * Inbitialize the UARTs in a panel. We don't care what sort of board + * these ports are on - since the port io registers are almost + * identical when dealing with ports. + */ + +static int stl_cd1400panelinit(struct stlbrd *brdp, struct stlpanel *panelp) +{ + unsigned int gfrcr; + int chipmask, i, j; + int nrchips, uartaddr, ioaddr; + unsigned long flags; + + pr_debug("stl_panelinit(brdp=%p,panelp=%p)\n", brdp, panelp); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(panelp->brdnr, panelp->pagenr); + +/* + * Check that each chip is present and started up OK. + */ + chipmask = 0; + nrchips = panelp->nrports / CD1400_PORTS; + for (i = 0; i < nrchips; i++) { + if (brdp->brdtype == BRD_ECHPCI) { + outb((panelp->pagenr + (i >> 1)), brdp->ioctrl); + ioaddr = panelp->iobase; + } else + ioaddr = panelp->iobase + (EREG_BANKSIZE * (i >> 1)); + uartaddr = (i & 0x01) ? 0x080 : 0; + outb((GFRCR + uartaddr), ioaddr); + outb(0, (ioaddr + EREG_DATA)); + outb((CCR + uartaddr), ioaddr); + outb(CCR_RESETFULL, (ioaddr + EREG_DATA)); + outb(CCR_RESETFULL, (ioaddr + EREG_DATA)); + outb((GFRCR + uartaddr), ioaddr); + for (j = 0; j < CCR_MAXWAIT; j++) + if ((gfrcr = inb(ioaddr + EREG_DATA)) != 0) + break; + + if ((j >= CCR_MAXWAIT) || (gfrcr < 0x40) || (gfrcr > 0x60)) { + printk("STALLION: cd1400 not responding, " + "brd=%d panel=%d chip=%d\n", + panelp->brdnr, panelp->panelnr, i); + continue; + } + chipmask |= (0x1 << i); + outb((PPR + uartaddr), ioaddr); + outb(PPR_SCALAR, (ioaddr + EREG_DATA)); + } + + BRDDISABLE(panelp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + return chipmask; +} + +/*****************************************************************************/ + +/* + * Initialize hardware specific port registers. + */ + +static void stl_cd1400portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp) +{ + unsigned long flags; + pr_debug("stl_cd1400portinit(brdp=%p,panelp=%p,portp=%p)\n", brdp, + panelp, portp); + + if ((brdp == NULL) || (panelp == NULL) || + (portp == NULL)) + return; + + spin_lock_irqsave(&brd_lock, flags); + portp->ioaddr = panelp->iobase + (((brdp->brdtype == BRD_ECHPCI) || + (portp->portnr < 8)) ? 0 : EREG_BANKSIZE); + portp->uartaddr = (portp->portnr & 0x04) << 5; + portp->pagenr = panelp->pagenr + (portp->portnr >> 3); + + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + stl_cd1400setreg(portp, LIVR, (portp->portnr << 3)); + portp->hwid = stl_cd1400getreg(portp, GFRCR); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Wait for the command register to be ready. We will poll this, + * since it won't usually take too long to be ready. + */ + +static void stl_cd1400ccrwait(struct stlport *portp) +{ + int i; + + for (i = 0; i < CCR_MAXWAIT; i++) + if (stl_cd1400getreg(portp, CCR) == 0) + return; + + printk("STALLION: cd1400 not responding, port=%d panel=%d brd=%d\n", + portp->portnr, portp->panelnr, portp->brdnr); +} + +/*****************************************************************************/ + +/* + * Set up the cd1400 registers for a port based on the termios port + * settings. + */ + +static void stl_cd1400setport(struct stlport *portp, struct ktermios *tiosp) +{ + struct stlbrd *brdp; + unsigned long flags; + unsigned int clkdiv, baudrate; + unsigned char cor1, cor2, cor3; + unsigned char cor4, cor5, ccr; + unsigned char srer, sreron, sreroff; + unsigned char mcor1, mcor2, rtpr; + unsigned char clk, div; + + cor1 = 0; + cor2 = 0; + cor3 = 0; + cor4 = 0; + cor5 = 0; + ccr = 0; + rtpr = 0; + clk = 0; + div = 0; + mcor1 = 0; + mcor2 = 0; + sreron = 0; + sreroff = 0; + + brdp = stl_brds[portp->brdnr]; + if (brdp == NULL) + return; + +/* + * Set up the RX char ignore mask with those RX error types we + * can ignore. We can get the cd1400 to help us out a little here, + * it will ignore parity errors and breaks for us. + */ + portp->rxignoremsk = 0; + if (tiosp->c_iflag & IGNPAR) { + portp->rxignoremsk |= (ST_PARITY | ST_FRAMING | ST_OVERRUN); + cor1 |= COR1_PARIGNORE; + } + if (tiosp->c_iflag & IGNBRK) { + portp->rxignoremsk |= ST_BREAK; + cor4 |= COR4_IGNBRK; + } + + portp->rxmarkmsk = ST_OVERRUN; + if (tiosp->c_iflag & (INPCK | PARMRK)) + portp->rxmarkmsk |= (ST_PARITY | ST_FRAMING); + if (tiosp->c_iflag & BRKINT) + portp->rxmarkmsk |= ST_BREAK; + +/* + * Go through the char size, parity and stop bits and set all the + * option register appropriately. + */ + switch (tiosp->c_cflag & CSIZE) { + case CS5: + cor1 |= COR1_CHL5; + break; + case CS6: + cor1 |= COR1_CHL6; + break; + case CS7: + cor1 |= COR1_CHL7; + break; + default: + cor1 |= COR1_CHL8; + break; + } + + if (tiosp->c_cflag & CSTOPB) + cor1 |= COR1_STOP2; + else + cor1 |= COR1_STOP1; + + if (tiosp->c_cflag & PARENB) { + if (tiosp->c_cflag & PARODD) + cor1 |= (COR1_PARENB | COR1_PARODD); + else + cor1 |= (COR1_PARENB | COR1_PAREVEN); + } else { + cor1 |= COR1_PARNONE; + } + +/* + * Set the RX FIFO threshold at 6 chars. This gives a bit of breathing + * space for hardware flow control and the like. This should be set to + * VMIN. Also here we will set the RX data timeout to 10ms - this should + * really be based on VTIME. + */ + cor3 |= FIFO_RXTHRESHOLD; + rtpr = 2; + +/* + * Calculate the baud rate timers. For now we will just assume that + * the input and output baud are the same. Could have used a baud + * table here, but this way we can generate virtually any baud rate + * we like! + */ + baudrate = tiosp->c_cflag & CBAUD; + if (baudrate & CBAUDEX) { + baudrate &= ~CBAUDEX; + if ((baudrate < 1) || (baudrate > 4)) + tiosp->c_cflag &= ~CBAUDEX; + else + baudrate += 15; + } + baudrate = stl_baudrates[baudrate]; + if ((tiosp->c_cflag & CBAUD) == B38400) { + if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + baudrate = 57600; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + baudrate = 115200; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + baudrate = 230400; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + baudrate = 460800; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) + baudrate = (portp->baud_base / portp->custom_divisor); + } + if (baudrate > STL_CD1400MAXBAUD) + baudrate = STL_CD1400MAXBAUD; + + if (baudrate > 0) { + for (clk = 0; clk < CD1400_NUMCLKS; clk++) { + clkdiv = (portp->clk / stl_cd1400clkdivs[clk]) / baudrate; + if (clkdiv < 0x100) + break; + } + div = (unsigned char) clkdiv; + } + +/* + * Check what form of modem signaling is required and set it up. + */ + if ((tiosp->c_cflag & CLOCAL) == 0) { + mcor1 |= MCOR1_DCD; + mcor2 |= MCOR2_DCD; + sreron |= SRER_MODEM; + portp->port.flags |= ASYNC_CHECK_CD; + } else + portp->port.flags &= ~ASYNC_CHECK_CD; + +/* + * Setup cd1400 enhanced modes if we can. In particular we want to + * handle as much of the flow control as possible automatically. As + * well as saving a few CPU cycles it will also greatly improve flow + * control reliability. + */ + if (tiosp->c_iflag & IXON) { + cor2 |= COR2_TXIBE; + cor3 |= COR3_SCD12; + if (tiosp->c_iflag & IXANY) + cor2 |= COR2_IXM; + } + + if (tiosp->c_cflag & CRTSCTS) { + cor2 |= COR2_CTSAE; + mcor1 |= FIFO_RTSTHRESHOLD; + } + +/* + * All cd1400 register values calculated so go through and set + * them all up. + */ + + pr_debug("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", + portp->portnr, portp->panelnr, portp->brdnr); + pr_debug(" cor1=%x cor2=%x cor3=%x cor4=%x cor5=%x\n", + cor1, cor2, cor3, cor4, cor5); + pr_debug(" mcor1=%x mcor2=%x rtpr=%x sreron=%x sreroff=%x\n", + mcor1, mcor2, rtpr, sreron, sreroff); + pr_debug(" tcor=%x tbpr=%x rcor=%x rbpr=%x\n", clk, div, clk, div); + pr_debug(" schr1=%x schr2=%x schr3=%x schr4=%x\n", + tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], + tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP]); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3)); + srer = stl_cd1400getreg(portp, SRER); + stl_cd1400setreg(portp, SRER, 0); + if (stl_cd1400updatereg(portp, COR1, cor1)) + ccr = 1; + if (stl_cd1400updatereg(portp, COR2, cor2)) + ccr = 1; + if (stl_cd1400updatereg(portp, COR3, cor3)) + ccr = 1; + if (ccr) { + stl_cd1400ccrwait(portp); + stl_cd1400setreg(portp, CCR, CCR_CORCHANGE); + } + stl_cd1400setreg(portp, COR4, cor4); + stl_cd1400setreg(portp, COR5, cor5); + stl_cd1400setreg(portp, MCOR1, mcor1); + stl_cd1400setreg(portp, MCOR2, mcor2); + if (baudrate > 0) { + stl_cd1400setreg(portp, TCOR, clk); + stl_cd1400setreg(portp, TBPR, div); + stl_cd1400setreg(portp, RCOR, clk); + stl_cd1400setreg(portp, RBPR, div); + } + stl_cd1400setreg(portp, SCHR1, tiosp->c_cc[VSTART]); + stl_cd1400setreg(portp, SCHR2, tiosp->c_cc[VSTOP]); + stl_cd1400setreg(portp, SCHR3, tiosp->c_cc[VSTART]); + stl_cd1400setreg(portp, SCHR4, tiosp->c_cc[VSTOP]); + stl_cd1400setreg(portp, RTPR, rtpr); + mcor1 = stl_cd1400getreg(portp, MSVR1); + if (mcor1 & MSVR1_DCD) + portp->sigs |= TIOCM_CD; + else + portp->sigs &= ~TIOCM_CD; + stl_cd1400setreg(portp, SRER, ((srer & ~sreroff) | sreron)); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Set the state of the DTR and RTS signals. + */ + +static void stl_cd1400setsignals(struct stlport *portp, int dtr, int rts) +{ + unsigned char msvr1, msvr2; + unsigned long flags; + + pr_debug("stl_cd1400setsignals(portp=%p,dtr=%d,rts=%d)\n", + portp, dtr, rts); + + msvr1 = 0; + msvr2 = 0; + if (dtr > 0) + msvr1 = MSVR1_DTR; + if (rts > 0) + msvr2 = MSVR2_RTS; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + if (rts >= 0) + stl_cd1400setreg(portp, MSVR2, msvr2); + if (dtr >= 0) + stl_cd1400setreg(portp, MSVR1, msvr1); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Return the state of the signals. + */ + +static int stl_cd1400getsignals(struct stlport *portp) +{ + unsigned char msvr1, msvr2; + unsigned long flags; + int sigs; + + pr_debug("stl_cd1400getsignals(portp=%p)\n", portp); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + msvr1 = stl_cd1400getreg(portp, MSVR1); + msvr2 = stl_cd1400getreg(portp, MSVR2); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + + sigs = 0; + sigs |= (msvr1 & MSVR1_DCD) ? TIOCM_CD : 0; + sigs |= (msvr1 & MSVR1_CTS) ? TIOCM_CTS : 0; + sigs |= (msvr1 & MSVR1_DTR) ? TIOCM_DTR : 0; + sigs |= (msvr2 & MSVR2_RTS) ? TIOCM_RTS : 0; +#if 0 + sigs |= (msvr1 & MSVR1_RI) ? TIOCM_RI : 0; + sigs |= (msvr1 & MSVR1_DSR) ? TIOCM_DSR : 0; +#else + sigs |= TIOCM_DSR; +#endif + return sigs; +} + +/*****************************************************************************/ + +/* + * Enable/Disable the Transmitter and/or Receiver. + */ + +static void stl_cd1400enablerxtx(struct stlport *portp, int rx, int tx) +{ + unsigned char ccr; + unsigned long flags; + + pr_debug("stl_cd1400enablerxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx, tx); + + ccr = 0; + + if (tx == 0) + ccr |= CCR_TXDISABLE; + else if (tx > 0) + ccr |= CCR_TXENABLE; + if (rx == 0) + ccr |= CCR_RXDISABLE; + else if (rx > 0) + ccr |= CCR_RXENABLE; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + stl_cd1400ccrwait(portp); + stl_cd1400setreg(portp, CCR, ccr); + stl_cd1400ccrwait(portp); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Start/stop the Transmitter and/or Receiver. + */ + +static void stl_cd1400startrxtx(struct stlport *portp, int rx, int tx) +{ + unsigned char sreron, sreroff; + unsigned long flags; + + pr_debug("stl_cd1400startrxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx, tx); + + sreron = 0; + sreroff = 0; + if (tx == 0) + sreroff |= (SRER_TXDATA | SRER_TXEMPTY); + else if (tx == 1) + sreron |= SRER_TXDATA; + else if (tx >= 2) + sreron |= SRER_TXEMPTY; + if (rx == 0) + sreroff |= SRER_RXDATA; + else if (rx > 0) + sreron |= SRER_RXDATA; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + stl_cd1400setreg(portp, SRER, + ((stl_cd1400getreg(portp, SRER) & ~sreroff) | sreron)); + BRDDISABLE(portp->brdnr); + if (tx > 0) + set_bit(ASYI_TXBUSY, &portp->istate); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Disable all interrupts from this port. + */ + +static void stl_cd1400disableintrs(struct stlport *portp) +{ + unsigned long flags; + + pr_debug("stl_cd1400disableintrs(portp=%p)\n", portp); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + stl_cd1400setreg(portp, SRER, 0); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +static void stl_cd1400sendbreak(struct stlport *portp, int len) +{ + unsigned long flags; + + pr_debug("stl_cd1400sendbreak(portp=%p,len=%d)\n", portp, len); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + stl_cd1400setreg(portp, SRER, + ((stl_cd1400getreg(portp, SRER) & ~SRER_TXDATA) | + SRER_TXEMPTY)); + BRDDISABLE(portp->brdnr); + portp->brklen = len; + if (len == 1) + portp->stats.txbreaks++; + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Take flow control actions... + */ + +static void stl_cd1400flowctrl(struct stlport *portp, int state) +{ + struct tty_struct *tty; + unsigned long flags; + + pr_debug("stl_cd1400flowctrl(portp=%p,state=%x)\n", portp, state); + + if (portp == NULL) + return; + tty = tty_port_tty_get(&portp->port); + if (tty == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + + if (state) { + if (tty->termios->c_iflag & IXOFF) { + stl_cd1400ccrwait(portp); + stl_cd1400setreg(portp, CCR, CCR_SENDSCHR1); + portp->stats.rxxon++; + stl_cd1400ccrwait(portp); + } +/* + * Question: should we return RTS to what it was before? It may + * have been set by an ioctl... Suppose not, since if you have + * hardware flow control set then it is pretty silly to go and + * set the RTS line by hand. + */ + if (tty->termios->c_cflag & CRTSCTS) { + stl_cd1400setreg(portp, MCOR1, + (stl_cd1400getreg(portp, MCOR1) | + FIFO_RTSTHRESHOLD)); + stl_cd1400setreg(portp, MSVR2, MSVR2_RTS); + portp->stats.rxrtson++; + } + } else { + if (tty->termios->c_iflag & IXOFF) { + stl_cd1400ccrwait(portp); + stl_cd1400setreg(portp, CCR, CCR_SENDSCHR2); + portp->stats.rxxoff++; + stl_cd1400ccrwait(portp); + } + if (tty->termios->c_cflag & CRTSCTS) { + stl_cd1400setreg(portp, MCOR1, + (stl_cd1400getreg(portp, MCOR1) & 0xf0)); + stl_cd1400setreg(portp, MSVR2, 0); + portp->stats.rxrtsoff++; + } + } + + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + tty_kref_put(tty); +} + +/*****************************************************************************/ + +/* + * Send a flow control character... + */ + +static void stl_cd1400sendflow(struct stlport *portp, int state) +{ + struct tty_struct *tty; + unsigned long flags; + + pr_debug("stl_cd1400sendflow(portp=%p,state=%x)\n", portp, state); + + if (portp == NULL) + return; + tty = tty_port_tty_get(&portp->port); + if (tty == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + if (state) { + stl_cd1400ccrwait(portp); + stl_cd1400setreg(portp, CCR, CCR_SENDSCHR1); + portp->stats.rxxon++; + stl_cd1400ccrwait(portp); + } else { + stl_cd1400ccrwait(portp); + stl_cd1400setreg(portp, CCR, CCR_SENDSCHR2); + portp->stats.rxxoff++; + stl_cd1400ccrwait(portp); + } + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + tty_kref_put(tty); +} + +/*****************************************************************************/ + +static void stl_cd1400flush(struct stlport *portp) +{ + unsigned long flags; + + pr_debug("stl_cd1400flush(portp=%p)\n", portp); + + if (portp == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03)); + stl_cd1400ccrwait(portp); + stl_cd1400setreg(portp, CCR, CCR_TXFLUSHFIFO); + stl_cd1400ccrwait(portp); + portp->tx.tail = portp->tx.head; + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Return the current state of data flow on this port. This is only + * really interesting when determining if data has fully completed + * transmission or not... This is easy for the cd1400, it accurately + * maintains the busy port flag. + */ + +static int stl_cd1400datastate(struct stlport *portp) +{ + pr_debug("stl_cd1400datastate(portp=%p)\n", portp); + + if (portp == NULL) + return 0; + + return test_bit(ASYI_TXBUSY, &portp->istate) ? 1 : 0; +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for cd1400 EasyIO boards. + */ + +static void stl_cd1400eiointr(struct stlpanel *panelp, unsigned int iobase) +{ + unsigned char svrtype; + + pr_debug("stl_cd1400eiointr(panelp=%p,iobase=%x)\n", panelp, iobase); + + spin_lock(&brd_lock); + outb(SVRR, iobase); + svrtype = inb(iobase + EREG_DATA); + if (panelp->nrports > 4) { + outb((SVRR + 0x80), iobase); + svrtype |= inb(iobase + EREG_DATA); + } + + if (svrtype & SVRR_RX) + stl_cd1400rxisr(panelp, iobase); + else if (svrtype & SVRR_TX) + stl_cd1400txisr(panelp, iobase); + else if (svrtype & SVRR_MDM) + stl_cd1400mdmisr(panelp, iobase); + + spin_unlock(&brd_lock); +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for cd1400 panels. + */ + +static void stl_cd1400echintr(struct stlpanel *panelp, unsigned int iobase) +{ + unsigned char svrtype; + + pr_debug("stl_cd1400echintr(panelp=%p,iobase=%x)\n", panelp, iobase); + + outb(SVRR, iobase); + svrtype = inb(iobase + EREG_DATA); + outb((SVRR + 0x80), iobase); + svrtype |= inb(iobase + EREG_DATA); + if (svrtype & SVRR_RX) + stl_cd1400rxisr(panelp, iobase); + else if (svrtype & SVRR_TX) + stl_cd1400txisr(panelp, iobase); + else if (svrtype & SVRR_MDM) + stl_cd1400mdmisr(panelp, iobase); +} + + +/*****************************************************************************/ + +/* + * Unfortunately we need to handle breaks in the TX data stream, since + * this is the only way to generate them on the cd1400. + */ + +static int stl_cd1400breakisr(struct stlport *portp, int ioaddr) +{ + if (portp->brklen == 1) { + outb((COR2 + portp->uartaddr), ioaddr); + outb((inb(ioaddr + EREG_DATA) | COR2_ETC), + (ioaddr + EREG_DATA)); + outb((TDR + portp->uartaddr), ioaddr); + outb(ETC_CMD, (ioaddr + EREG_DATA)); + outb(ETC_STARTBREAK, (ioaddr + EREG_DATA)); + outb((SRER + portp->uartaddr), ioaddr); + outb((inb(ioaddr + EREG_DATA) & ~(SRER_TXDATA | SRER_TXEMPTY)), + (ioaddr + EREG_DATA)); + return 1; + } else if (portp->brklen > 1) { + outb((TDR + portp->uartaddr), ioaddr); + outb(ETC_CMD, (ioaddr + EREG_DATA)); + outb(ETC_STOPBREAK, (ioaddr + EREG_DATA)); + portp->brklen = -1; + return 1; + } else { + outb((COR2 + portp->uartaddr), ioaddr); + outb((inb(ioaddr + EREG_DATA) & ~COR2_ETC), + (ioaddr + EREG_DATA)); + portp->brklen = 0; + } + return 0; +} + +/*****************************************************************************/ + +/* + * Transmit interrupt handler. This has gotta be fast! Handling TX + * chars is pretty simple, stuff as many as possible from the TX buffer + * into the cd1400 FIFO. Must also handle TX breaks here, since they + * are embedded as commands in the data stream. Oh no, had to use a goto! + * This could be optimized more, will do when I get time... + * In practice it is possible that interrupts are enabled but that the + * port has been hung up. Need to handle not having any TX buffer here, + * this is done by using the side effect that head and tail will also + * be NULL if the buffer has been freed. + */ + +static void stl_cd1400txisr(struct stlpanel *panelp, int ioaddr) +{ + struct stlport *portp; + int len, stlen; + char *head, *tail; + unsigned char ioack, srer; + struct tty_struct *tty; + + pr_debug("stl_cd1400txisr(panelp=%p,ioaddr=%x)\n", panelp, ioaddr); + + ioack = inb(ioaddr + EREG_TXACK); + if (((ioack & panelp->ackmask) != 0) || + ((ioack & ACK_TYPMASK) != ACK_TYPTX)) { + printk("STALLION: bad TX interrupt ack value=%x\n", ioack); + return; + } + portp = panelp->ports[(ioack >> 3)]; + +/* + * Unfortunately we need to handle breaks in the data stream, since + * this is the only way to generate them on the cd1400. Do it now if + * a break is to be sent. + */ + if (portp->brklen != 0) + if (stl_cd1400breakisr(portp, ioaddr)) + goto stl_txalldone; + + head = portp->tx.head; + tail = portp->tx.tail; + len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); + if ((len == 0) || ((len < STL_TXBUFLOW) && + (test_bit(ASYI_TXLOW, &portp->istate) == 0))) { + set_bit(ASYI_TXLOW, &portp->istate); + tty = tty_port_tty_get(&portp->port); + if (tty) { + tty_wakeup(tty); + tty_kref_put(tty); + } + } + + if (len == 0) { + outb((SRER + portp->uartaddr), ioaddr); + srer = inb(ioaddr + EREG_DATA); + if (srer & SRER_TXDATA) { + srer = (srer & ~SRER_TXDATA) | SRER_TXEMPTY; + } else { + srer &= ~(SRER_TXDATA | SRER_TXEMPTY); + clear_bit(ASYI_TXBUSY, &portp->istate); + } + outb(srer, (ioaddr + EREG_DATA)); + } else { + len = min(len, CD1400_TXFIFOSIZE); + portp->stats.txtotal += len; + stlen = min_t(unsigned int, len, + (portp->tx.buf + STL_TXBUFSIZE) - tail); + outb((TDR + portp->uartaddr), ioaddr); + outsb((ioaddr + EREG_DATA), tail, stlen); + len -= stlen; + tail += stlen; + if (tail >= (portp->tx.buf + STL_TXBUFSIZE)) + tail = portp->tx.buf; + if (len > 0) { + outsb((ioaddr + EREG_DATA), tail, len); + tail += len; + } + portp->tx.tail = tail; + } + +stl_txalldone: + outb((EOSRR + portp->uartaddr), ioaddr); + outb(0, (ioaddr + EREG_DATA)); +} + +/*****************************************************************************/ + +/* + * Receive character interrupt handler. Determine if we have good chars + * or bad chars and then process appropriately. Good chars are easy + * just shove the lot into the RX buffer and set all status byte to 0. + * If a bad RX char then process as required. This routine needs to be + * fast! In practice it is possible that we get an interrupt on a port + * that is closed. This can happen on hangups - since they completely + * shutdown a port not in user context. Need to handle this case. + */ + +static void stl_cd1400rxisr(struct stlpanel *panelp, int ioaddr) +{ + struct stlport *portp; + struct tty_struct *tty; + unsigned int ioack, len, buflen; + unsigned char status; + char ch; + + pr_debug("stl_cd1400rxisr(panelp=%p,ioaddr=%x)\n", panelp, ioaddr); + + ioack = inb(ioaddr + EREG_RXACK); + if ((ioack & panelp->ackmask) != 0) { + printk("STALLION: bad RX interrupt ack value=%x\n", ioack); + return; + } + portp = panelp->ports[(ioack >> 3)]; + tty = tty_port_tty_get(&portp->port); + + if ((ioack & ACK_TYPMASK) == ACK_TYPRXGOOD) { + outb((RDCR + portp->uartaddr), ioaddr); + len = inb(ioaddr + EREG_DATA); + if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) { + len = min_t(unsigned int, len, sizeof(stl_unwanted)); + outb((RDSR + portp->uartaddr), ioaddr); + insb((ioaddr + EREG_DATA), &stl_unwanted[0], len); + portp->stats.rxlost += len; + portp->stats.rxtotal += len; + } else { + len = min(len, buflen); + if (len > 0) { + unsigned char *ptr; + outb((RDSR + portp->uartaddr), ioaddr); + tty_prepare_flip_string(tty, &ptr, len); + insb((ioaddr + EREG_DATA), ptr, len); + tty_schedule_flip(tty); + portp->stats.rxtotal += len; + } + } + } else if ((ioack & ACK_TYPMASK) == ACK_TYPRXBAD) { + outb((RDSR + portp->uartaddr), ioaddr); + status = inb(ioaddr + EREG_DATA); + ch = inb(ioaddr + EREG_DATA); + if (status & ST_PARITY) + portp->stats.rxparity++; + if (status & ST_FRAMING) + portp->stats.rxframing++; + if (status & ST_OVERRUN) + portp->stats.rxoverrun++; + if (status & ST_BREAK) + portp->stats.rxbreaks++; + if (status & ST_SCHARMASK) { + if ((status & ST_SCHARMASK) == ST_SCHAR1) + portp->stats.txxon++; + if ((status & ST_SCHARMASK) == ST_SCHAR2) + portp->stats.txxoff++; + goto stl_rxalldone; + } + if (tty != NULL && (portp->rxignoremsk & status) == 0) { + if (portp->rxmarkmsk & status) { + if (status & ST_BREAK) { + status = TTY_BREAK; + if (portp->port.flags & ASYNC_SAK) { + do_SAK(tty); + BRDENABLE(portp->brdnr, portp->pagenr); + } + } else if (status & ST_PARITY) + status = TTY_PARITY; + else if (status & ST_FRAMING) + status = TTY_FRAME; + else if(status & ST_OVERRUN) + status = TTY_OVERRUN; + else + status = 0; + } else + status = 0; + tty_insert_flip_char(tty, ch, status); + tty_schedule_flip(tty); + } + } else { + printk("STALLION: bad RX interrupt ack value=%x\n", ioack); + tty_kref_put(tty); + return; + } + +stl_rxalldone: + tty_kref_put(tty); + outb((EOSRR + portp->uartaddr), ioaddr); + outb(0, (ioaddr + EREG_DATA)); +} + +/*****************************************************************************/ + +/* + * Modem interrupt handler. The is called when the modem signal line + * (DCD) has changed state. Leave most of the work to the off-level + * processing routine. + */ + +static void stl_cd1400mdmisr(struct stlpanel *panelp, int ioaddr) +{ + struct stlport *portp; + unsigned int ioack; + unsigned char misr; + + pr_debug("stl_cd1400mdmisr(panelp=%p)\n", panelp); + + ioack = inb(ioaddr + EREG_MDACK); + if (((ioack & panelp->ackmask) != 0) || + ((ioack & ACK_TYPMASK) != ACK_TYPMDM)) { + printk("STALLION: bad MODEM interrupt ack value=%x\n", ioack); + return; + } + portp = panelp->ports[(ioack >> 3)]; + + outb((MISR + portp->uartaddr), ioaddr); + misr = inb(ioaddr + EREG_DATA); + if (misr & MISR_DCD) { + stl_cd_change(portp); + portp->stats.modem++; + } + + outb((EOSRR + portp->uartaddr), ioaddr); + outb(0, (ioaddr + EREG_DATA)); +} + +/*****************************************************************************/ +/* SC26198 HARDWARE FUNCTIONS */ +/*****************************************************************************/ + +/* + * These functions get/set/update the registers of the sc26198 UARTs. + * Access to the sc26198 registers is via an address/data io port pair. + * (Maybe should make this inline...) + */ + +static int stl_sc26198getreg(struct stlport *portp, int regnr) +{ + outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR)); + return inb(portp->ioaddr + XP_DATA); +} + +static void stl_sc26198setreg(struct stlport *portp, int regnr, int value) +{ + outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR)); + outb(value, (portp->ioaddr + XP_DATA)); +} + +static int stl_sc26198updatereg(struct stlport *portp, int regnr, int value) +{ + outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR)); + if (inb(portp->ioaddr + XP_DATA) != value) { + outb(value, (portp->ioaddr + XP_DATA)); + return 1; + } + return 0; +} + +/*****************************************************************************/ + +/* + * Functions to get and set the sc26198 global registers. + */ + +static int stl_sc26198getglobreg(struct stlport *portp, int regnr) +{ + outb(regnr, (portp->ioaddr + XP_ADDR)); + return inb(portp->ioaddr + XP_DATA); +} + +#if 0 +static void stl_sc26198setglobreg(struct stlport *portp, int regnr, int value) +{ + outb(regnr, (portp->ioaddr + XP_ADDR)); + outb(value, (portp->ioaddr + XP_DATA)); +} +#endif + +/*****************************************************************************/ + +/* + * Inbitialize the UARTs in a panel. We don't care what sort of board + * these ports are on - since the port io registers are almost + * identical when dealing with ports. + */ + +static int stl_sc26198panelinit(struct stlbrd *brdp, struct stlpanel *panelp) +{ + int chipmask, i; + int nrchips, ioaddr; + + pr_debug("stl_sc26198panelinit(brdp=%p,panelp=%p)\n", brdp, panelp); + + BRDENABLE(panelp->brdnr, panelp->pagenr); + +/* + * Check that each chip is present and started up OK. + */ + chipmask = 0; + nrchips = (panelp->nrports + 4) / SC26198_PORTS; + if (brdp->brdtype == BRD_ECHPCI) + outb(panelp->pagenr, brdp->ioctrl); + + for (i = 0; i < nrchips; i++) { + ioaddr = panelp->iobase + (i * 4); + outb(SCCR, (ioaddr + XP_ADDR)); + outb(CR_RESETALL, (ioaddr + XP_DATA)); + outb(TSTR, (ioaddr + XP_ADDR)); + if (inb(ioaddr + XP_DATA) != 0) { + printk("STALLION: sc26198 not responding, " + "brd=%d panel=%d chip=%d\n", + panelp->brdnr, panelp->panelnr, i); + continue; + } + chipmask |= (0x1 << i); + outb(GCCR, (ioaddr + XP_ADDR)); + outb(GCCR_IVRTYPCHANACK, (ioaddr + XP_DATA)); + outb(WDTRCR, (ioaddr + XP_ADDR)); + outb(0xff, (ioaddr + XP_DATA)); + } + + BRDDISABLE(panelp->brdnr); + return chipmask; +} + +/*****************************************************************************/ + +/* + * Initialize hardware specific port registers. + */ + +static void stl_sc26198portinit(struct stlbrd *brdp, struct stlpanel *panelp, struct stlport *portp) +{ + pr_debug("stl_sc26198portinit(brdp=%p,panelp=%p,portp=%p)\n", brdp, + panelp, portp); + + if ((brdp == NULL) || (panelp == NULL) || + (portp == NULL)) + return; + + portp->ioaddr = panelp->iobase + ((portp->portnr < 8) ? 0 : 4); + portp->uartaddr = (portp->portnr & 0x07) << 4; + portp->pagenr = panelp->pagenr; + portp->hwid = 0x1; + + BRDENABLE(portp->brdnr, portp->pagenr); + stl_sc26198setreg(portp, IOPCR, IOPCR_SETSIGS); + BRDDISABLE(portp->brdnr); +} + +/*****************************************************************************/ + +/* + * Set up the sc26198 registers for a port based on the termios port + * settings. + */ + +static void stl_sc26198setport(struct stlport *portp, struct ktermios *tiosp) +{ + struct stlbrd *brdp; + unsigned long flags; + unsigned int baudrate; + unsigned char mr0, mr1, mr2, clk; + unsigned char imron, imroff, iopr, ipr; + + mr0 = 0; + mr1 = 0; + mr2 = 0; + clk = 0; + iopr = 0; + imron = 0; + imroff = 0; + + brdp = stl_brds[portp->brdnr]; + if (brdp == NULL) + return; + +/* + * Set up the RX char ignore mask with those RX error types we + * can ignore. + */ + portp->rxignoremsk = 0; + if (tiosp->c_iflag & IGNPAR) + portp->rxignoremsk |= (SR_RXPARITY | SR_RXFRAMING | + SR_RXOVERRUN); + if (tiosp->c_iflag & IGNBRK) + portp->rxignoremsk |= SR_RXBREAK; + + portp->rxmarkmsk = SR_RXOVERRUN; + if (tiosp->c_iflag & (INPCK | PARMRK)) + portp->rxmarkmsk |= (SR_RXPARITY | SR_RXFRAMING); + if (tiosp->c_iflag & BRKINT) + portp->rxmarkmsk |= SR_RXBREAK; + +/* + * Go through the char size, parity and stop bits and set all the + * option register appropriately. + */ + switch (tiosp->c_cflag & CSIZE) { + case CS5: + mr1 |= MR1_CS5; + break; + case CS6: + mr1 |= MR1_CS6; + break; + case CS7: + mr1 |= MR1_CS7; + break; + default: + mr1 |= MR1_CS8; + break; + } + + if (tiosp->c_cflag & CSTOPB) + mr2 |= MR2_STOP2; + else + mr2 |= MR2_STOP1; + + if (tiosp->c_cflag & PARENB) { + if (tiosp->c_cflag & PARODD) + mr1 |= (MR1_PARENB | MR1_PARODD); + else + mr1 |= (MR1_PARENB | MR1_PAREVEN); + } else + mr1 |= MR1_PARNONE; + + mr1 |= MR1_ERRBLOCK; + +/* + * Set the RX FIFO threshold at 8 chars. This gives a bit of breathing + * space for hardware flow control and the like. This should be set to + * VMIN. + */ + mr2 |= MR2_RXFIFOHALF; + +/* + * Calculate the baud rate timers. For now we will just assume that + * the input and output baud are the same. The sc26198 has a fixed + * baud rate table, so only discrete baud rates possible. + */ + baudrate = tiosp->c_cflag & CBAUD; + if (baudrate & CBAUDEX) { + baudrate &= ~CBAUDEX; + if ((baudrate < 1) || (baudrate > 4)) + tiosp->c_cflag &= ~CBAUDEX; + else + baudrate += 15; + } + baudrate = stl_baudrates[baudrate]; + if ((tiosp->c_cflag & CBAUD) == B38400) { + if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + baudrate = 57600; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + baudrate = 115200; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + baudrate = 230400; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + baudrate = 460800; + else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) + baudrate = (portp->baud_base / portp->custom_divisor); + } + if (baudrate > STL_SC26198MAXBAUD) + baudrate = STL_SC26198MAXBAUD; + + if (baudrate > 0) + for (clk = 0; clk < SC26198_NRBAUDS; clk++) + if (baudrate <= sc26198_baudtable[clk]) + break; + +/* + * Check what form of modem signaling is required and set it up. + */ + if (tiosp->c_cflag & CLOCAL) { + portp->port.flags &= ~ASYNC_CHECK_CD; + } else { + iopr |= IOPR_DCDCOS; + imron |= IR_IOPORT; + portp->port.flags |= ASYNC_CHECK_CD; + } + +/* + * Setup sc26198 enhanced modes if we can. In particular we want to + * handle as much of the flow control as possible automatically. As + * well as saving a few CPU cycles it will also greatly improve flow + * control reliability. + */ + if (tiosp->c_iflag & IXON) { + mr0 |= MR0_SWFTX | MR0_SWFT; + imron |= IR_XONXOFF; + } else + imroff |= IR_XONXOFF; + + if (tiosp->c_iflag & IXOFF) + mr0 |= MR0_SWFRX; + + if (tiosp->c_cflag & CRTSCTS) { + mr2 |= MR2_AUTOCTS; + mr1 |= MR1_AUTORTS; + } + +/* + * All sc26198 register values calculated so go through and set + * them all up. + */ + + pr_debug("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", + portp->portnr, portp->panelnr, portp->brdnr); + pr_debug(" mr0=%x mr1=%x mr2=%x clk=%x\n", mr0, mr1, mr2, clk); + pr_debug(" iopr=%x imron=%x imroff=%x\n", iopr, imron, imroff); + pr_debug(" schr1=%x schr2=%x schr3=%x schr4=%x\n", + tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], + tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP]); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_sc26198setreg(portp, IMR, 0); + stl_sc26198updatereg(portp, MR0, mr0); + stl_sc26198updatereg(portp, MR1, mr1); + stl_sc26198setreg(portp, SCCR, CR_RXERRBLOCK); + stl_sc26198updatereg(portp, MR2, mr2); + stl_sc26198updatereg(portp, IOPIOR, + ((stl_sc26198getreg(portp, IOPIOR) & ~IPR_CHANGEMASK) | iopr)); + + if (baudrate > 0) { + stl_sc26198setreg(portp, TXCSR, clk); + stl_sc26198setreg(portp, RXCSR, clk); + } + + stl_sc26198setreg(portp, XONCR, tiosp->c_cc[VSTART]); + stl_sc26198setreg(portp, XOFFCR, tiosp->c_cc[VSTOP]); + + ipr = stl_sc26198getreg(portp, IPR); + if (ipr & IPR_DCD) + portp->sigs &= ~TIOCM_CD; + else + portp->sigs |= TIOCM_CD; + + portp->imr = (portp->imr & ~imroff) | imron; + stl_sc26198setreg(portp, IMR, portp->imr); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Set the state of the DTR and RTS signals. + */ + +static void stl_sc26198setsignals(struct stlport *portp, int dtr, int rts) +{ + unsigned char iopioron, iopioroff; + unsigned long flags; + + pr_debug("stl_sc26198setsignals(portp=%p,dtr=%d,rts=%d)\n", portp, + dtr, rts); + + iopioron = 0; + iopioroff = 0; + if (dtr == 0) + iopioroff |= IPR_DTR; + else if (dtr > 0) + iopioron |= IPR_DTR; + if (rts == 0) + iopioroff |= IPR_RTS; + else if (rts > 0) + iopioron |= IPR_RTS; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_sc26198setreg(portp, IOPIOR, + ((stl_sc26198getreg(portp, IOPIOR) & ~iopioroff) | iopioron)); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Return the state of the signals. + */ + +static int stl_sc26198getsignals(struct stlport *portp) +{ + unsigned char ipr; + unsigned long flags; + int sigs; + + pr_debug("stl_sc26198getsignals(portp=%p)\n", portp); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + ipr = stl_sc26198getreg(portp, IPR); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + + sigs = 0; + sigs |= (ipr & IPR_DCD) ? 0 : TIOCM_CD; + sigs |= (ipr & IPR_CTS) ? 0 : TIOCM_CTS; + sigs |= (ipr & IPR_DTR) ? 0: TIOCM_DTR; + sigs |= (ipr & IPR_RTS) ? 0: TIOCM_RTS; + sigs |= TIOCM_DSR; + return sigs; +} + +/*****************************************************************************/ + +/* + * Enable/Disable the Transmitter and/or Receiver. + */ + +static void stl_sc26198enablerxtx(struct stlport *portp, int rx, int tx) +{ + unsigned char ccr; + unsigned long flags; + + pr_debug("stl_sc26198enablerxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx,tx); + + ccr = portp->crenable; + if (tx == 0) + ccr &= ~CR_TXENABLE; + else if (tx > 0) + ccr |= CR_TXENABLE; + if (rx == 0) + ccr &= ~CR_RXENABLE; + else if (rx > 0) + ccr |= CR_RXENABLE; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_sc26198setreg(portp, SCCR, ccr); + BRDDISABLE(portp->brdnr); + portp->crenable = ccr; + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Start/stop the Transmitter and/or Receiver. + */ + +static void stl_sc26198startrxtx(struct stlport *portp, int rx, int tx) +{ + unsigned char imr; + unsigned long flags; + + pr_debug("stl_sc26198startrxtx(portp=%p,rx=%d,tx=%d)\n", portp, rx, tx); + + imr = portp->imr; + if (tx == 0) + imr &= ~IR_TXRDY; + else if (tx == 1) + imr |= IR_TXRDY; + if (rx == 0) + imr &= ~(IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG); + else if (rx > 0) + imr |= IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_sc26198setreg(portp, IMR, imr); + BRDDISABLE(portp->brdnr); + portp->imr = imr; + if (tx > 0) + set_bit(ASYI_TXBUSY, &portp->istate); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Disable all interrupts from this port. + */ + +static void stl_sc26198disableintrs(struct stlport *portp) +{ + unsigned long flags; + + pr_debug("stl_sc26198disableintrs(portp=%p)\n", portp); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + portp->imr = 0; + stl_sc26198setreg(portp, IMR, 0); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +static void stl_sc26198sendbreak(struct stlport *portp, int len) +{ + unsigned long flags; + + pr_debug("stl_sc26198sendbreak(portp=%p,len=%d)\n", portp, len); + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + if (len == 1) { + stl_sc26198setreg(portp, SCCR, CR_TXSTARTBREAK); + portp->stats.txbreaks++; + } else + stl_sc26198setreg(portp, SCCR, CR_TXSTOPBREAK); + + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Take flow control actions... + */ + +static void stl_sc26198flowctrl(struct stlport *portp, int state) +{ + struct tty_struct *tty; + unsigned long flags; + unsigned char mr0; + + pr_debug("stl_sc26198flowctrl(portp=%p,state=%x)\n", portp, state); + + if (portp == NULL) + return; + tty = tty_port_tty_get(&portp->port); + if (tty == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + + if (state) { + if (tty->termios->c_iflag & IXOFF) { + mr0 = stl_sc26198getreg(portp, MR0); + stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); + stl_sc26198setreg(portp, SCCR, CR_TXSENDXON); + mr0 |= MR0_SWFRX; + portp->stats.rxxon++; + stl_sc26198wait(portp); + stl_sc26198setreg(portp, MR0, mr0); + } +/* + * Question: should we return RTS to what it was before? It may + * have been set by an ioctl... Suppose not, since if you have + * hardware flow control set then it is pretty silly to go and + * set the RTS line by hand. + */ + if (tty->termios->c_cflag & CRTSCTS) { + stl_sc26198setreg(portp, MR1, + (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS)); + stl_sc26198setreg(portp, IOPIOR, + (stl_sc26198getreg(portp, IOPIOR) | IOPR_RTS)); + portp->stats.rxrtson++; + } + } else { + if (tty->termios->c_iflag & IXOFF) { + mr0 = stl_sc26198getreg(portp, MR0); + stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); + stl_sc26198setreg(portp, SCCR, CR_TXSENDXOFF); + mr0 &= ~MR0_SWFRX; + portp->stats.rxxoff++; + stl_sc26198wait(portp); + stl_sc26198setreg(portp, MR0, mr0); + } + if (tty->termios->c_cflag & CRTSCTS) { + stl_sc26198setreg(portp, MR1, + (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS)); + stl_sc26198setreg(portp, IOPIOR, + (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS)); + portp->stats.rxrtsoff++; + } + } + + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + tty_kref_put(tty); +} + +/*****************************************************************************/ + +/* + * Send a flow control character. + */ + +static void stl_sc26198sendflow(struct stlport *portp, int state) +{ + struct tty_struct *tty; + unsigned long flags; + unsigned char mr0; + + pr_debug("stl_sc26198sendflow(portp=%p,state=%x)\n", portp, state); + + if (portp == NULL) + return; + tty = tty_port_tty_get(&portp->port); + if (tty == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + if (state) { + mr0 = stl_sc26198getreg(portp, MR0); + stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); + stl_sc26198setreg(portp, SCCR, CR_TXSENDXON); + mr0 |= MR0_SWFRX; + portp->stats.rxxon++; + stl_sc26198wait(portp); + stl_sc26198setreg(portp, MR0, mr0); + } else { + mr0 = stl_sc26198getreg(portp, MR0); + stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); + stl_sc26198setreg(portp, SCCR, CR_TXSENDXOFF); + mr0 &= ~MR0_SWFRX; + portp->stats.rxxoff++; + stl_sc26198wait(portp); + stl_sc26198setreg(portp, MR0, mr0); + } + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + tty_kref_put(tty); +} + +/*****************************************************************************/ + +static void stl_sc26198flush(struct stlport *portp) +{ + unsigned long flags; + + pr_debug("stl_sc26198flush(portp=%p)\n", portp); + + if (portp == NULL) + return; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + stl_sc26198setreg(portp, SCCR, CR_TXRESET); + stl_sc26198setreg(portp, SCCR, portp->crenable); + BRDDISABLE(portp->brdnr); + portp->tx.tail = portp->tx.head; + spin_unlock_irqrestore(&brd_lock, flags); +} + +/*****************************************************************************/ + +/* + * Return the current state of data flow on this port. This is only + * really interesting when determining if data has fully completed + * transmission or not... The sc26198 interrupt scheme cannot + * determine when all data has actually drained, so we need to + * check the port statusy register to be sure. + */ + +static int stl_sc26198datastate(struct stlport *portp) +{ + unsigned long flags; + unsigned char sr; + + pr_debug("stl_sc26198datastate(portp=%p)\n", portp); + + if (portp == NULL) + return 0; + if (test_bit(ASYI_TXBUSY, &portp->istate)) + return 1; + + spin_lock_irqsave(&brd_lock, flags); + BRDENABLE(portp->brdnr, portp->pagenr); + sr = stl_sc26198getreg(portp, SR); + BRDDISABLE(portp->brdnr); + spin_unlock_irqrestore(&brd_lock, flags); + + return (sr & SR_TXEMPTY) ? 0 : 1; +} + +/*****************************************************************************/ + +/* + * Delay for a small amount of time, to give the sc26198 a chance + * to process a command... + */ + +static void stl_sc26198wait(struct stlport *portp) +{ + int i; + + pr_debug("stl_sc26198wait(portp=%p)\n", portp); + + if (portp == NULL) + return; + + for (i = 0; i < 20; i++) + stl_sc26198getglobreg(portp, TSTR); +} + +/*****************************************************************************/ + +/* + * If we are TX flow controlled and in IXANY mode then we may + * need to unflow control here. We gotta do this because of the + * automatic flow control modes of the sc26198. + */ + +static void stl_sc26198txunflow(struct stlport *portp, struct tty_struct *tty) +{ + unsigned char mr0; + + mr0 = stl_sc26198getreg(portp, MR0); + stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX)); + stl_sc26198setreg(portp, SCCR, CR_HOSTXON); + stl_sc26198wait(portp); + stl_sc26198setreg(portp, MR0, mr0); + clear_bit(ASYI_TXFLOWED, &portp->istate); +} + +/*****************************************************************************/ + +/* + * Interrupt service routine for sc26198 panels. + */ + +static void stl_sc26198intr(struct stlpanel *panelp, unsigned int iobase) +{ + struct stlport *portp; + unsigned int iack; + + spin_lock(&brd_lock); + +/* + * Work around bug in sc26198 chip... Cannot have A6 address + * line of UART high, else iack will be returned as 0. + */ + outb(0, (iobase + 1)); + + iack = inb(iobase + XP_IACK); + portp = panelp->ports[(iack & IVR_CHANMASK) + ((iobase & 0x4) << 1)]; + + if (iack & IVR_RXDATA) + stl_sc26198rxisr(portp, iack); + else if (iack & IVR_TXDATA) + stl_sc26198txisr(portp); + else + stl_sc26198otherisr(portp, iack); + + spin_unlock(&brd_lock); +} + +/*****************************************************************************/ + +/* + * Transmit interrupt handler. This has gotta be fast! Handling TX + * chars is pretty simple, stuff as many as possible from the TX buffer + * into the sc26198 FIFO. + * In practice it is possible that interrupts are enabled but that the + * port has been hung up. Need to handle not having any TX buffer here, + * this is done by using the side effect that head and tail will also + * be NULL if the buffer has been freed. + */ + +static void stl_sc26198txisr(struct stlport *portp) +{ + struct tty_struct *tty; + unsigned int ioaddr; + unsigned char mr0; + int len, stlen; + char *head, *tail; + + pr_debug("stl_sc26198txisr(portp=%p)\n", portp); + + ioaddr = portp->ioaddr; + head = portp->tx.head; + tail = portp->tx.tail; + len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head)); + if ((len == 0) || ((len < STL_TXBUFLOW) && + (test_bit(ASYI_TXLOW, &portp->istate) == 0))) { + set_bit(ASYI_TXLOW, &portp->istate); + tty = tty_port_tty_get(&portp->port); + if (tty) { + tty_wakeup(tty); + tty_kref_put(tty); + } + } + + if (len == 0) { + outb((MR0 | portp->uartaddr), (ioaddr + XP_ADDR)); + mr0 = inb(ioaddr + XP_DATA); + if ((mr0 & MR0_TXMASK) == MR0_TXEMPTY) { + portp->imr &= ~IR_TXRDY; + outb((IMR | portp->uartaddr), (ioaddr + XP_ADDR)); + outb(portp->imr, (ioaddr + XP_DATA)); + clear_bit(ASYI_TXBUSY, &portp->istate); + } else { + mr0 |= ((mr0 & ~MR0_TXMASK) | MR0_TXEMPTY); + outb(mr0, (ioaddr + XP_DATA)); + } + } else { + len = min(len, SC26198_TXFIFOSIZE); + portp->stats.txtotal += len; + stlen = min_t(unsigned int, len, + (portp->tx.buf + STL_TXBUFSIZE) - tail); + outb(GTXFIFO, (ioaddr + XP_ADDR)); + outsb((ioaddr + XP_DATA), tail, stlen); + len -= stlen; + tail += stlen; + if (tail >= (portp->tx.buf + STL_TXBUFSIZE)) + tail = portp->tx.buf; + if (len > 0) { + outsb((ioaddr + XP_DATA), tail, len); + tail += len; + } + portp->tx.tail = tail; + } +} + +/*****************************************************************************/ + +/* + * Receive character interrupt handler. Determine if we have good chars + * or bad chars and then process appropriately. Good chars are easy + * just shove the lot into the RX buffer and set all status byte to 0. + * If a bad RX char then process as required. This routine needs to be + * fast! In practice it is possible that we get an interrupt on a port + * that is closed. This can happen on hangups - since they completely + * shutdown a port not in user context. Need to handle this case. + */ + +static void stl_sc26198rxisr(struct stlport *portp, unsigned int iack) +{ + struct tty_struct *tty; + unsigned int len, buflen, ioaddr; + + pr_debug("stl_sc26198rxisr(portp=%p,iack=%x)\n", portp, iack); + + tty = tty_port_tty_get(&portp->port); + ioaddr = portp->ioaddr; + outb(GIBCR, (ioaddr + XP_ADDR)); + len = inb(ioaddr + XP_DATA) + 1; + + if ((iack & IVR_TYPEMASK) == IVR_RXDATA) { + if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) { + len = min_t(unsigned int, len, sizeof(stl_unwanted)); + outb(GRXFIFO, (ioaddr + XP_ADDR)); + insb((ioaddr + XP_DATA), &stl_unwanted[0], len); + portp->stats.rxlost += len; + portp->stats.rxtotal += len; + } else { + len = min(len, buflen); + if (len > 0) { + unsigned char *ptr; + outb(GRXFIFO, (ioaddr + XP_ADDR)); + tty_prepare_flip_string(tty, &ptr, len); + insb((ioaddr + XP_DATA), ptr, len); + tty_schedule_flip(tty); + portp->stats.rxtotal += len; + } + } + } else { + stl_sc26198rxbadchars(portp); + } + +/* + * If we are TX flow controlled and in IXANY mode then we may need + * to unflow control here. We gotta do this because of the automatic + * flow control modes of the sc26198. + */ + if (test_bit(ASYI_TXFLOWED, &portp->istate)) { + if ((tty != NULL) && + (tty->termios != NULL) && + (tty->termios->c_iflag & IXANY)) { + stl_sc26198txunflow(portp, tty); + } + } + tty_kref_put(tty); +} + +/*****************************************************************************/ + +/* + * Process an RX bad character. + */ + +static void stl_sc26198rxbadch(struct stlport *portp, unsigned char status, char ch) +{ + struct tty_struct *tty; + unsigned int ioaddr; + + tty = tty_port_tty_get(&portp->port); + ioaddr = portp->ioaddr; + + if (status & SR_RXPARITY) + portp->stats.rxparity++; + if (status & SR_RXFRAMING) + portp->stats.rxframing++; + if (status & SR_RXOVERRUN) + portp->stats.rxoverrun++; + if (status & SR_RXBREAK) + portp->stats.rxbreaks++; + + if ((tty != NULL) && + ((portp->rxignoremsk & status) == 0)) { + if (portp->rxmarkmsk & status) { + if (status & SR_RXBREAK) { + status = TTY_BREAK; + if (portp->port.flags & ASYNC_SAK) { + do_SAK(tty); + BRDENABLE(portp->brdnr, portp->pagenr); + } + } else if (status & SR_RXPARITY) + status = TTY_PARITY; + else if (status & SR_RXFRAMING) + status = TTY_FRAME; + else if(status & SR_RXOVERRUN) + status = TTY_OVERRUN; + else + status = 0; + } else + status = 0; + + tty_insert_flip_char(tty, ch, status); + tty_schedule_flip(tty); + + if (status == 0) + portp->stats.rxtotal++; + } + tty_kref_put(tty); +} + +/*****************************************************************************/ + +/* + * Process all characters in the RX FIFO of the UART. Check all char + * status bytes as well, and process as required. We need to check + * all bytes in the FIFO, in case some more enter the FIFO while we + * are here. To get the exact character error type we need to switch + * into CHAR error mode (that is why we need to make sure we empty + * the FIFO). + */ + +static void stl_sc26198rxbadchars(struct stlport *portp) +{ + unsigned char status, mr1; + char ch; + +/* + * To get the precise error type for each character we must switch + * back into CHAR error mode. + */ + mr1 = stl_sc26198getreg(portp, MR1); + stl_sc26198setreg(portp, MR1, (mr1 & ~MR1_ERRBLOCK)); + + while ((status = stl_sc26198getreg(portp, SR)) & SR_RXRDY) { + stl_sc26198setreg(portp, SCCR, CR_CLEARRXERR); + ch = stl_sc26198getreg(portp, RXFIFO); + stl_sc26198rxbadch(portp, status, ch); + } + +/* + * To get correct interrupt class we must switch back into BLOCK + * error mode. + */ + stl_sc26198setreg(portp, MR1, mr1); +} + +/*****************************************************************************/ + +/* + * Other interrupt handler. This includes modem signals, flow + * control actions, etc. Most stuff is left to off-level interrupt + * processing time. + */ + +static void stl_sc26198otherisr(struct stlport *portp, unsigned int iack) +{ + unsigned char cir, ipr, xisr; + + pr_debug("stl_sc26198otherisr(portp=%p,iack=%x)\n", portp, iack); + + cir = stl_sc26198getglobreg(portp, CIR); + + switch (cir & CIR_SUBTYPEMASK) { + case CIR_SUBCOS: + ipr = stl_sc26198getreg(portp, IPR); + if (ipr & IPR_DCDCHANGE) { + stl_cd_change(portp); + portp->stats.modem++; + } + break; + case CIR_SUBXONXOFF: + xisr = stl_sc26198getreg(portp, XISR); + if (xisr & XISR_RXXONGOT) { + set_bit(ASYI_TXFLOWED, &portp->istate); + portp->stats.txxoff++; + } + if (xisr & XISR_RXXOFFGOT) { + clear_bit(ASYI_TXFLOWED, &portp->istate); + portp->stats.txxon++; + } + break; + case CIR_SUBBREAK: + stl_sc26198setreg(portp, SCCR, CR_BREAKRESET); + stl_sc26198rxbadchars(portp); + break; + default: + break; + } +} + +static void stl_free_isabrds(void) +{ + struct stlbrd *brdp; + unsigned int i; + + for (i = 0; i < stl_nrbrds; i++) { + if ((brdp = stl_brds[i]) == NULL || (brdp->state & STL_PROBED)) + continue; + + free_irq(brdp->irq, brdp); + + stl_cleanup_panels(brdp); + + release_region(brdp->ioaddr1, brdp->iosize1); + if (brdp->iosize2 > 0) + release_region(brdp->ioaddr2, brdp->iosize2); + + kfree(brdp); + stl_brds[i] = NULL; + } +} + +/* + * Loadable module initialization stuff. + */ +static int __init stallion_module_init(void) +{ + struct stlbrd *brdp; + struct stlconf conf; + unsigned int i, j; + int retval; + + printk(KERN_INFO "%s: version %s\n", stl_drvtitle, stl_drvversion); + + spin_lock_init(&stallion_lock); + spin_lock_init(&brd_lock); + + stl_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); + if (!stl_serial) { + retval = -ENOMEM; + goto err; + } + + stl_serial->owner = THIS_MODULE; + stl_serial->driver_name = stl_drvname; + stl_serial->name = "ttyE"; + stl_serial->major = STL_SERIALMAJOR; + stl_serial->minor_start = 0; + stl_serial->type = TTY_DRIVER_TYPE_SERIAL; + stl_serial->subtype = SERIAL_TYPE_NORMAL; + stl_serial->init_termios = stl_deftermios; + stl_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + tty_set_operations(stl_serial, &stl_ops); + + retval = tty_register_driver(stl_serial); + if (retval) { + printk("STALLION: failed to register serial driver\n"); + goto err_frtty; + } + +/* + * Find any dynamically supported boards. That is via module load + * line options. + */ + for (i = stl_nrbrds; i < stl_nargs; i++) { + memset(&conf, 0, sizeof(conf)); + if (stl_parsebrd(&conf, stl_brdsp[i]) == 0) + continue; + if ((brdp = stl_allocbrd()) == NULL) + continue; + brdp->brdnr = i; + brdp->brdtype = conf.brdtype; + brdp->ioaddr1 = conf.ioaddr1; + brdp->ioaddr2 = conf.ioaddr2; + brdp->irq = conf.irq; + brdp->irqtype = conf.irqtype; + stl_brds[brdp->brdnr] = brdp; + if (stl_brdinit(brdp)) { + stl_brds[brdp->brdnr] = NULL; + kfree(brdp); + } else { + for (j = 0; j < brdp->nrports; j++) + tty_register_device(stl_serial, + brdp->brdnr * STL_MAXPORTS + j, NULL); + stl_nrbrds = i + 1; + } + } + + /* this has to be _after_ isa finding because of locking */ + retval = pci_register_driver(&stl_pcidriver); + if (retval && stl_nrbrds == 0) { + printk(KERN_ERR "STALLION: can't register pci driver\n"); + goto err_unrtty; + } + +/* + * Set up a character driver for per board stuff. This is mainly used + * to do stats ioctls on the ports. + */ + if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stl_fsiomem)) + printk("STALLION: failed to register serial board device\n"); + + stallion_class = class_create(THIS_MODULE, "staliomem"); + if (IS_ERR(stallion_class)) + printk("STALLION: failed to create class\n"); + for (i = 0; i < 4; i++) + device_create(stallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), + NULL, "staliomem%d", i); + + return 0; +err_unrtty: + tty_unregister_driver(stl_serial); +err_frtty: + put_tty_driver(stl_serial); +err: + return retval; +} + +static void __exit stallion_module_exit(void) +{ + struct stlbrd *brdp; + unsigned int i, j; + + pr_debug("cleanup_module()\n"); + + printk(KERN_INFO "Unloading %s: version %s\n", stl_drvtitle, + stl_drvversion); + +/* + * Free up all allocated resources used by the ports. This includes + * memory and interrupts. As part of this process we will also do + * a hangup on every open port - to try to flush out any processes + * hanging onto ports. + */ + for (i = 0; i < stl_nrbrds; i++) { + if ((brdp = stl_brds[i]) == NULL || (brdp->state & STL_PROBED)) + continue; + for (j = 0; j < brdp->nrports; j++) + tty_unregister_device(stl_serial, + brdp->brdnr * STL_MAXPORTS + j); + } + + for (i = 0; i < 4; i++) + device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i)); + unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); + class_destroy(stallion_class); + + pci_unregister_driver(&stl_pcidriver); + + stl_free_isabrds(); + + tty_unregister_driver(stl_serial); + put_tty_driver(stl_serial); +} + +module_init(stallion_module_init); +module_exit(stallion_module_exit); + +MODULE_AUTHOR("Greg Ungerer"); +MODULE_DESCRIPTION("Stallion Multiport Serial Driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3 From 4c37705877e74c02c968735c2eee0f84914cf557 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 22 Feb 2011 17:09:33 -0800 Subject: tty: move obsolete and broken generic_serial drivers to drivers/staging/generic_serial/ As planned by Arnd Bergmann, this moves the following drivers to the drivers/staging/generic_serial directory where they will be removed after 2.6.41 if no one steps up to claim them. generic_serial rio ser_a2232 sx vme_scc Cc: Arnd Bergmann Cc: Alan Cox Cc: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/char/Kconfig | 44 - drivers/char/Makefile | 6 - drivers/char/generic_serial.c | 844 ------ drivers/char/rio/Makefile | 12 - drivers/char/rio/board.h | 132 - drivers/char/rio/cirrus.h | 210 -- drivers/char/rio/cmdblk.h | 53 - drivers/char/rio/cmdpkt.h | 177 -- drivers/char/rio/daemon.h | 307 --- drivers/char/rio/errors.h | 98 - drivers/char/rio/func.h | 143 - drivers/char/rio/host.h | 123 - drivers/char/rio/link.h | 96 - drivers/char/rio/linux_compat.h | 77 - drivers/char/rio/map.h | 98 - drivers/char/rio/param.h | 55 - drivers/char/rio/parmmap.h | 81 - drivers/char/rio/pci.h | 72 - drivers/char/rio/phb.h | 142 - drivers/char/rio/pkt.h | 77 - drivers/char/rio/port.h | 179 -- drivers/char/rio/protsts.h | 110 - drivers/char/rio/rio.h | 208 -- drivers/char/rio/rio_linux.c | 1204 --------- drivers/char/rio/rio_linux.h | 197 -- drivers/char/rio/rioboard.h | 275 -- drivers/char/rio/rioboot.c | 1113 -------- drivers/char/rio/riocmd.c | 939 ------- drivers/char/rio/rioctrl.c | 1504 ----------- drivers/char/rio/riodrvr.h | 138 - drivers/char/rio/rioinfo.h | 92 - drivers/char/rio/rioinit.c | 421 --- drivers/char/rio/riointr.c | 645 ----- drivers/char/rio/rioioctl.h | 57 - drivers/char/rio/rioparam.c | 663 ----- drivers/char/rio/rioroute.c | 1039 -------- drivers/char/rio/riospace.h | 154 -- drivers/char/rio/riotable.c | 941 ------- drivers/char/rio/riotty.c | 654 ----- drivers/char/rio/route.h | 101 - drivers/char/rio/rup.h | 69 - drivers/char/rio/unixrup.h | 51 - drivers/char/ser_a2232.c | 831 ------ drivers/char/ser_a2232.h | 202 -- drivers/char/ser_a2232fw.ax | 529 ---- drivers/char/ser_a2232fw.h | 306 --- drivers/char/sx.c | 2894 --------------------- drivers/char/sx.h | 201 -- drivers/char/sxboards.h | 206 -- drivers/char/sxwindow.h | 393 --- drivers/char/vme_scc.c | 1145 -------- drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/generic_serial/Kconfig | 45 + drivers/staging/generic_serial/Makefile | 6 + drivers/staging/generic_serial/TODO | 6 + drivers/staging/generic_serial/generic_serial.c | 844 ++++++ drivers/staging/generic_serial/rio/Makefile | 12 + drivers/staging/generic_serial/rio/board.h | 132 + drivers/staging/generic_serial/rio/cirrus.h | 210 ++ drivers/staging/generic_serial/rio/cmdblk.h | 53 + drivers/staging/generic_serial/rio/cmdpkt.h | 177 ++ drivers/staging/generic_serial/rio/daemon.h | 307 +++ drivers/staging/generic_serial/rio/errors.h | 98 + drivers/staging/generic_serial/rio/func.h | 143 + drivers/staging/generic_serial/rio/host.h | 123 + drivers/staging/generic_serial/rio/link.h | 96 + drivers/staging/generic_serial/rio/linux_compat.h | 77 + drivers/staging/generic_serial/rio/map.h | 98 + drivers/staging/generic_serial/rio/param.h | 55 + drivers/staging/generic_serial/rio/parmmap.h | 81 + drivers/staging/generic_serial/rio/pci.h | 72 + drivers/staging/generic_serial/rio/phb.h | 142 + drivers/staging/generic_serial/rio/pkt.h | 77 + drivers/staging/generic_serial/rio/port.h | 179 ++ drivers/staging/generic_serial/rio/protsts.h | 110 + drivers/staging/generic_serial/rio/rio.h | 208 ++ drivers/staging/generic_serial/rio/rio_linux.c | 1204 +++++++++ drivers/staging/generic_serial/rio/rio_linux.h | 197 ++ drivers/staging/generic_serial/rio/rioboard.h | 275 ++ drivers/staging/generic_serial/rio/rioboot.c | 1113 ++++++++ drivers/staging/generic_serial/rio/riocmd.c | 939 +++++++ drivers/staging/generic_serial/rio/rioctrl.c | 1504 +++++++++++ drivers/staging/generic_serial/rio/riodrvr.h | 138 + drivers/staging/generic_serial/rio/rioinfo.h | 92 + drivers/staging/generic_serial/rio/rioinit.c | 421 +++ drivers/staging/generic_serial/rio/riointr.c | 645 +++++ drivers/staging/generic_serial/rio/rioioctl.h | 57 + drivers/staging/generic_serial/rio/rioparam.c | 663 +++++ drivers/staging/generic_serial/rio/rioroute.c | 1039 ++++++++ drivers/staging/generic_serial/rio/riospace.h | 154 ++ drivers/staging/generic_serial/rio/riotable.c | 941 +++++++ drivers/staging/generic_serial/rio/riotty.c | 654 +++++ drivers/staging/generic_serial/rio/route.h | 101 + drivers/staging/generic_serial/rio/rup.h | 69 + drivers/staging/generic_serial/rio/unixrup.h | 51 + drivers/staging/generic_serial/ser_a2232.c | 831 ++++++ drivers/staging/generic_serial/ser_a2232.h | 202 ++ drivers/staging/generic_serial/ser_a2232fw.ax | 529 ++++ drivers/staging/generic_serial/ser_a2232fw.h | 306 +++ drivers/staging/generic_serial/sx.c | 2894 +++++++++++++++++++++ drivers/staging/generic_serial/sx.h | 201 ++ drivers/staging/generic_serial/sxboards.h | 206 ++ drivers/staging/generic_serial/sxwindow.h | 393 +++ drivers/staging/generic_serial/vme_scc.c | 1145 ++++++++ 105 files changed, 20318 insertions(+), 20308 deletions(-) delete mode 100644 drivers/char/generic_serial.c delete mode 100644 drivers/char/rio/Makefile delete mode 100644 drivers/char/rio/board.h delete mode 100644 drivers/char/rio/cirrus.h delete mode 100644 drivers/char/rio/cmdblk.h delete mode 100644 drivers/char/rio/cmdpkt.h delete mode 100644 drivers/char/rio/daemon.h delete mode 100644 drivers/char/rio/errors.h delete mode 100644 drivers/char/rio/func.h delete mode 100644 drivers/char/rio/host.h delete mode 100644 drivers/char/rio/link.h delete mode 100644 drivers/char/rio/linux_compat.h delete mode 100644 drivers/char/rio/map.h delete mode 100644 drivers/char/rio/param.h delete mode 100644 drivers/char/rio/parmmap.h delete mode 100644 drivers/char/rio/pci.h delete mode 100644 drivers/char/rio/phb.h delete mode 100644 drivers/char/rio/pkt.h delete mode 100644 drivers/char/rio/port.h delete mode 100644 drivers/char/rio/protsts.h delete mode 100644 drivers/char/rio/rio.h delete mode 100644 drivers/char/rio/rio_linux.c delete mode 100644 drivers/char/rio/rio_linux.h delete mode 100644 drivers/char/rio/rioboard.h delete mode 100644 drivers/char/rio/rioboot.c delete mode 100644 drivers/char/rio/riocmd.c delete mode 100644 drivers/char/rio/rioctrl.c delete mode 100644 drivers/char/rio/riodrvr.h delete mode 100644 drivers/char/rio/rioinfo.h delete mode 100644 drivers/char/rio/rioinit.c delete mode 100644 drivers/char/rio/riointr.c delete mode 100644 drivers/char/rio/rioioctl.h delete mode 100644 drivers/char/rio/rioparam.c delete mode 100644 drivers/char/rio/rioroute.c delete mode 100644 drivers/char/rio/riospace.h delete mode 100644 drivers/char/rio/riotable.c delete mode 100644 drivers/char/rio/riotty.c delete mode 100644 drivers/char/rio/route.h delete mode 100644 drivers/char/rio/rup.h delete mode 100644 drivers/char/rio/unixrup.h delete mode 100644 drivers/char/ser_a2232.c delete mode 100644 drivers/char/ser_a2232.h delete mode 100644 drivers/char/ser_a2232fw.ax delete mode 100644 drivers/char/ser_a2232fw.h delete mode 100644 drivers/char/sx.c delete mode 100644 drivers/char/sx.h delete mode 100644 drivers/char/sxboards.h delete mode 100644 drivers/char/sxwindow.h delete mode 100644 drivers/char/vme_scc.c create mode 100644 drivers/staging/generic_serial/Kconfig create mode 100644 drivers/staging/generic_serial/Makefile create mode 100644 drivers/staging/generic_serial/TODO create mode 100644 drivers/staging/generic_serial/generic_serial.c create mode 100644 drivers/staging/generic_serial/rio/Makefile create mode 100644 drivers/staging/generic_serial/rio/board.h create mode 100644 drivers/staging/generic_serial/rio/cirrus.h create mode 100644 drivers/staging/generic_serial/rio/cmdblk.h create mode 100644 drivers/staging/generic_serial/rio/cmdpkt.h create mode 100644 drivers/staging/generic_serial/rio/daemon.h create mode 100644 drivers/staging/generic_serial/rio/errors.h create mode 100644 drivers/staging/generic_serial/rio/func.h create mode 100644 drivers/staging/generic_serial/rio/host.h create mode 100644 drivers/staging/generic_serial/rio/link.h create mode 100644 drivers/staging/generic_serial/rio/linux_compat.h create mode 100644 drivers/staging/generic_serial/rio/map.h create mode 100644 drivers/staging/generic_serial/rio/param.h create mode 100644 drivers/staging/generic_serial/rio/parmmap.h create mode 100644 drivers/staging/generic_serial/rio/pci.h create mode 100644 drivers/staging/generic_serial/rio/phb.h create mode 100644 drivers/staging/generic_serial/rio/pkt.h create mode 100644 drivers/staging/generic_serial/rio/port.h create mode 100644 drivers/staging/generic_serial/rio/protsts.h create mode 100644 drivers/staging/generic_serial/rio/rio.h create mode 100644 drivers/staging/generic_serial/rio/rio_linux.c create mode 100644 drivers/staging/generic_serial/rio/rio_linux.h create mode 100644 drivers/staging/generic_serial/rio/rioboard.h create mode 100644 drivers/staging/generic_serial/rio/rioboot.c create mode 100644 drivers/staging/generic_serial/rio/riocmd.c create mode 100644 drivers/staging/generic_serial/rio/rioctrl.c create mode 100644 drivers/staging/generic_serial/rio/riodrvr.h create mode 100644 drivers/staging/generic_serial/rio/rioinfo.h create mode 100644 drivers/staging/generic_serial/rio/rioinit.c create mode 100644 drivers/staging/generic_serial/rio/riointr.c create mode 100644 drivers/staging/generic_serial/rio/rioioctl.h create mode 100644 drivers/staging/generic_serial/rio/rioparam.c create mode 100644 drivers/staging/generic_serial/rio/rioroute.c create mode 100644 drivers/staging/generic_serial/rio/riospace.h create mode 100644 drivers/staging/generic_serial/rio/riotable.c create mode 100644 drivers/staging/generic_serial/rio/riotty.c create mode 100644 drivers/staging/generic_serial/rio/route.h create mode 100644 drivers/staging/generic_serial/rio/rup.h create mode 100644 drivers/staging/generic_serial/rio/unixrup.h create mode 100644 drivers/staging/generic_serial/ser_a2232.c create mode 100644 drivers/staging/generic_serial/ser_a2232.h create mode 100644 drivers/staging/generic_serial/ser_a2232fw.ax create mode 100644 drivers/staging/generic_serial/ser_a2232fw.h create mode 100644 drivers/staging/generic_serial/sx.c create mode 100644 drivers/staging/generic_serial/sx.h create mode 100644 drivers/staging/generic_serial/sxboards.h create mode 100644 drivers/staging/generic_serial/sxwindow.h create mode 100644 drivers/staging/generic_serial/vme_scc.c (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 7b8cf0295f6c..04f8b2d083c6 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -15,34 +15,6 @@ config DEVKMEM kind of kernel debugging operations. When in doubt, say "N". -config SX - tristate "Specialix SX (and SI) card support" - depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) && BROKEN - help - This is a driver for the SX and SI multiport serial cards. - Please read the file for details. - - This driver can only be built as a module ( = code which can be - inserted in and removed from the running kernel whenever you want). - The module will be called sx. If you want to do that, say M here. - -config RIO - tristate "Specialix RIO system support" - depends on SERIAL_NONSTANDARD && BROKEN - help - This is a driver for the Specialix RIO, a smart serial card which - drives an outboard box that can support up to 128 ports. Product - information is at . - There are both ISA and PCI versions. - -config RIO_OLDPCI - bool "Support really old RIO/PCI cards" - depends on RIO - help - Older RIO PCI cards need some initialization-time configuration to - determine the IRQ and some control addresses. If you have a RIO and - this doesn't seem to work, try setting this to Y. - config STALDRV bool "Stallion multiport serial support" depends on SERIAL_NONSTANDARD @@ -55,22 +27,6 @@ config STALDRV in this case. If you have never heard about all this, it's safe to say N. -config A2232 - tristate "Commodore A2232 serial support (EXPERIMENTAL)" - depends on EXPERIMENTAL && ZORRO && BROKEN - ---help--- - This option supports the 2232 7-port serial card shipped with the - Amiga 2000 and other Zorro-bus machines, dating from 1989. At - a max of 19,200 bps, the ports are served by a 6551 ACIA UART chip - each, plus a 8520 CIA, and a master 6502 CPU and buffer as well. The - ports were connected with 8 pin DIN connectors on the card bracket, - for which 8 pin to DB25 adapters were supplied. The card also had - jumpers internally to toggle various pinning configurations. - - This driver can be built as a module; but then "generic_serial" - will also be built as a module. This has to be loaded before - "ser_a2232". If you want to do this, answer M here. - config SGI_SNSC bool "SGI Altix system controller communication support" depends on (IA64_SGI_SN2 || IA64_GENERIC) diff --git a/drivers/char/Makefile b/drivers/char/Makefile index 48bb8acbea49..3ca1f627be8a 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -5,13 +5,7 @@ obj-y += mem.o random.o obj-$(CONFIG_TTY_PRINTK) += ttyprintk.o obj-y += misc.o -obj-$(CONFIG_MVME147_SCC) += generic_serial.o vme_scc.o -obj-$(CONFIG_MVME162_SCC) += generic_serial.o vme_scc.o -obj-$(CONFIG_BVME6000_SCC) += generic_serial.o vme_scc.o -obj-$(CONFIG_A2232) += ser_a2232.o generic_serial.o obj-$(CONFIG_ATARI_DSP56K) += dsp56k.o -obj-$(CONFIG_SX) += sx.o generic_serial.o -obj-$(CONFIG_RIO) += rio/ generic_serial.o obj-$(CONFIG_RAW_DRIVER) += raw.o obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o obj-$(CONFIG_MSPEC) += mspec.o diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c deleted file mode 100644 index 5954ee1dc953..000000000000 --- a/drivers/char/generic_serial.c +++ /dev/null @@ -1,844 +0,0 @@ -/* - * generic_serial.c - * - * Copyright (C) 1998/1999 R.E.Wolff@BitWizard.nl - * - * written for the SX serial driver. - * Contains the code that should be shared over all the serial drivers. - * - * Credit for the idea to do it this way might go to Alan Cox. - * - * - * Version 0.1 -- December, 1998. Initial version. - * Version 0.2 -- March, 1999. Some more routines. Bugfixes. Etc. - * Version 0.5 -- August, 1999. Some more fixes. Reformat for Linus. - * - * BitWizard is actively maintaining this file. We sometimes find - * that someone submitted changes to this file. We really appreciate - * your help, but please submit changes through us. We're doing our - * best to be responsive. -- REW - * */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define DEBUG - -static int gs_debug; - -#ifdef DEBUG -#define gs_dprintk(f, str...) if (gs_debug & f) printk (str) -#else -#define gs_dprintk(f, str...) /* nothing */ -#endif - -#define func_enter() gs_dprintk (GS_DEBUG_FLOW, "gs: enter %s\n", __func__) -#define func_exit() gs_dprintk (GS_DEBUG_FLOW, "gs: exit %s\n", __func__) - -#define RS_EVENT_WRITE_WAKEUP 1 - -module_param(gs_debug, int, 0644); - - -int gs_put_char(struct tty_struct * tty, unsigned char ch) -{ - struct gs_port *port; - - func_enter (); - - port = tty->driver_data; - - if (!port) return 0; - - if (! (port->port.flags & ASYNC_INITIALIZED)) return 0; - - /* Take a lock on the serial tranmit buffer! */ - mutex_lock(& port->port_write_mutex); - - if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { - /* Sorry, buffer is full, drop character. Update statistics???? -- REW */ - mutex_unlock(&port->port_write_mutex); - return 0; - } - - port->xmit_buf[port->xmit_head++] = ch; - port->xmit_head &= SERIAL_XMIT_SIZE - 1; - port->xmit_cnt++; /* Characters in buffer */ - - mutex_unlock(&port->port_write_mutex); - func_exit (); - return 1; -} - - -/* -> Problems to take into account are: -> -1- Interrupts that empty part of the buffer. -> -2- page faults on the access to userspace. -> -3- Other processes that are also trying to do a "write". -*/ - -int gs_write(struct tty_struct * tty, - const unsigned char *buf, int count) -{ - struct gs_port *port; - int c, total = 0; - int t; - - func_enter (); - - port = tty->driver_data; - - if (!port) return 0; - - if (! (port->port.flags & ASYNC_INITIALIZED)) - return 0; - - /* get exclusive "write" access to this port (problem 3) */ - /* This is not a spinlock because we can have a disk access (page - fault) in copy_from_user */ - mutex_lock(& port->port_write_mutex); - - while (1) { - - c = count; - - /* This is safe because we "OWN" the "head". Noone else can - change the "head": we own the port_write_mutex. */ - /* Don't overrun the end of the buffer */ - t = SERIAL_XMIT_SIZE - port->xmit_head; - if (t < c) c = t; - - /* This is safe because the xmit_cnt can only decrease. This - would increase "t", so we might copy too little chars. */ - /* Don't copy past the "head" of the buffer */ - t = SERIAL_XMIT_SIZE - 1 - port->xmit_cnt; - if (t < c) c = t; - - /* Can't copy more? break out! */ - if (c <= 0) break; - - memcpy (port->xmit_buf + port->xmit_head, buf, c); - - port -> xmit_cnt += c; - port -> xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE -1); - buf += c; - count -= c; - total += c; - } - mutex_unlock(& port->port_write_mutex); - - gs_dprintk (GS_DEBUG_WRITE, "write: interrupts are %s\n", - (port->port.flags & GS_TX_INTEN)?"enabled": "disabled"); - - if (port->xmit_cnt && - !tty->stopped && - !tty->hw_stopped && - !(port->port.flags & GS_TX_INTEN)) { - port->port.flags |= GS_TX_INTEN; - port->rd->enable_tx_interrupts (port); - } - func_exit (); - return total; -} - - - -int gs_write_room(struct tty_struct * tty) -{ - struct gs_port *port = tty->driver_data; - int ret; - - func_enter (); - ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; - if (ret < 0) - ret = 0; - func_exit (); - return ret; -} - - -int gs_chars_in_buffer(struct tty_struct *tty) -{ - struct gs_port *port = tty->driver_data; - func_enter (); - - func_exit (); - return port->xmit_cnt; -} - - -static int gs_real_chars_in_buffer(struct tty_struct *tty) -{ - struct gs_port *port; - func_enter (); - - port = tty->driver_data; - - if (!port->rd) return 0; - if (!port->rd->chars_in_buffer) return 0; - - func_exit (); - return port->xmit_cnt + port->rd->chars_in_buffer (port); -} - - -static int gs_wait_tx_flushed (void * ptr, unsigned long timeout) -{ - struct gs_port *port = ptr; - unsigned long end_jiffies; - int jiffies_to_transmit, charsleft = 0, rv = 0; - int rcib; - - func_enter(); - - gs_dprintk (GS_DEBUG_FLUSH, "port=%p.\n", port); - if (port) { - gs_dprintk (GS_DEBUG_FLUSH, "xmit_cnt=%x, xmit_buf=%p, tty=%p.\n", - port->xmit_cnt, port->xmit_buf, port->port.tty); - } - - if (!port || port->xmit_cnt < 0 || !port->xmit_buf) { - gs_dprintk (GS_DEBUG_FLUSH, "ERROR: !port, !port->xmit_buf or prot->xmit_cnt < 0.\n"); - func_exit(); - return -EINVAL; /* This is an error which we don't know how to handle. */ - } - - rcib = gs_real_chars_in_buffer(port->port.tty); - - if(rcib <= 0) { - gs_dprintk (GS_DEBUG_FLUSH, "nothing to wait for.\n"); - func_exit(); - return rv; - } - /* stop trying: now + twice the time it would normally take + seconds */ - if (timeout == 0) timeout = MAX_SCHEDULE_TIMEOUT; - end_jiffies = jiffies; - if (timeout != MAX_SCHEDULE_TIMEOUT) - end_jiffies += port->baud?(2 * rcib * 10 * HZ / port->baud):0; - end_jiffies += timeout; - - gs_dprintk (GS_DEBUG_FLUSH, "now=%lx, end=%lx (%ld).\n", - jiffies, end_jiffies, end_jiffies-jiffies); - - /* the expression is actually jiffies < end_jiffies, but that won't - work around the wraparound. Tricky eh? */ - while ((charsleft = gs_real_chars_in_buffer (port->port.tty)) && - time_after (end_jiffies, jiffies)) { - /* Units check: - chars * (bits/char) * (jiffies /sec) / (bits/sec) = jiffies! - check! */ - - charsleft += 16; /* Allow 16 chars more to be transmitted ... */ - jiffies_to_transmit = port->baud?(1 + charsleft * 10 * HZ / port->baud):0; - /* ^^^ Round up.... */ - if (jiffies_to_transmit <= 0) jiffies_to_transmit = 1; - - gs_dprintk (GS_DEBUG_FLUSH, "Expect to finish in %d jiffies " - "(%d chars).\n", jiffies_to_transmit, charsleft); - - msleep_interruptible(jiffies_to_msecs(jiffies_to_transmit)); - if (signal_pending (current)) { - gs_dprintk (GS_DEBUG_FLUSH, "Signal pending. Bombing out: "); - rv = -EINTR; - break; - } - } - - gs_dprintk (GS_DEBUG_FLUSH, "charsleft = %d.\n", charsleft); - set_current_state (TASK_RUNNING); - - func_exit(); - return rv; -} - - - -void gs_flush_buffer(struct tty_struct *tty) -{ - struct gs_port *port; - unsigned long flags; - - func_enter (); - - port = tty->driver_data; - - if (!port) return; - - /* XXX Would the write semaphore do? */ - spin_lock_irqsave (&port->driver_lock, flags); - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore (&port->driver_lock, flags); - - tty_wakeup(tty); - func_exit (); -} - - -void gs_flush_chars(struct tty_struct * tty) -{ - struct gs_port *port; - - func_enter (); - - port = tty->driver_data; - - if (!port) return; - - if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || - !port->xmit_buf) { - func_exit (); - return; - } - - /* Beats me -- REW */ - port->port.flags |= GS_TX_INTEN; - port->rd->enable_tx_interrupts (port); - func_exit (); -} - - -void gs_stop(struct tty_struct * tty) -{ - struct gs_port *port; - - func_enter (); - - port = tty->driver_data; - - if (!port) return; - - if (port->xmit_cnt && - port->xmit_buf && - (port->port.flags & GS_TX_INTEN) ) { - port->port.flags &= ~GS_TX_INTEN; - port->rd->disable_tx_interrupts (port); - } - func_exit (); -} - - -void gs_start(struct tty_struct * tty) -{ - struct gs_port *port; - - port = tty->driver_data; - - if (!port) return; - - if (port->xmit_cnt && - port->xmit_buf && - !(port->port.flags & GS_TX_INTEN) ) { - port->port.flags |= GS_TX_INTEN; - port->rd->enable_tx_interrupts (port); - } - func_exit (); -} - - -static void gs_shutdown_port (struct gs_port *port) -{ - unsigned long flags; - - func_enter(); - - if (!port) return; - - if (!(port->port.flags & ASYNC_INITIALIZED)) - return; - - spin_lock_irqsave(&port->driver_lock, flags); - - if (port->xmit_buf) { - free_page((unsigned long) port->xmit_buf); - port->xmit_buf = NULL; - } - - if (port->port.tty) - set_bit(TTY_IO_ERROR, &port->port.tty->flags); - - port->rd->shutdown_port (port); - - port->port.flags &= ~ASYNC_INITIALIZED; - spin_unlock_irqrestore(&port->driver_lock, flags); - - func_exit(); -} - - -void gs_hangup(struct tty_struct *tty) -{ - struct gs_port *port; - unsigned long flags; - - func_enter (); - - port = tty->driver_data; - tty = port->port.tty; - if (!tty) - return; - - gs_shutdown_port (port); - spin_lock_irqsave(&port->port.lock, flags); - port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|GS_ACTIVE); - port->port.tty = NULL; - port->port.count = 0; - spin_unlock_irqrestore(&port->port.lock, flags); - - wake_up_interruptible(&port->port.open_wait); - func_exit (); -} - - -int gs_block_til_ready(void *port_, struct file * filp) -{ - struct gs_port *gp = port_; - struct tty_port *port = &gp->port; - DECLARE_WAITQUEUE(wait, current); - int retval; - int do_clocal = 0; - int CD; - struct tty_struct *tty; - unsigned long flags; - - func_enter (); - - if (!port) return 0; - - tty = port->tty; - - gs_dprintk (GS_DEBUG_BTR, "Entering gs_block_till_ready.\n"); - /* - * If the device is in the middle of being closed, then block - * until it's done, and then try again. - */ - if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { - interruptible_sleep_on(&port->close_wait); - if (port->flags & ASYNC_HUP_NOTIFY) - return -EAGAIN; - else - return -ERESTARTSYS; - } - - gs_dprintk (GS_DEBUG_BTR, "after hung up\n"); - - /* - * If non-blocking mode is set, or the port is not enabled, - * then make the check up front and then exit. - */ - if ((filp->f_flags & O_NONBLOCK) || - (tty->flags & (1 << TTY_IO_ERROR))) { - port->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } - - gs_dprintk (GS_DEBUG_BTR, "after nonblock\n"); - - if (C_CLOCAL(tty)) - do_clocal = 1; - - /* - * Block waiting for the carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, port->count is dropped by one, so that - * rs_close() knows when to free things. We restore it upon - * exit, either normal or abnormal. - */ - retval = 0; - - add_wait_queue(&port->open_wait, &wait); - - gs_dprintk (GS_DEBUG_BTR, "after add waitq.\n"); - spin_lock_irqsave(&port->lock, flags); - if (!tty_hung_up_p(filp)) { - port->count--; - } - port->blocked_open++; - spin_unlock_irqrestore(&port->lock, flags); - while (1) { - CD = tty_port_carrier_raised(port); - gs_dprintk (GS_DEBUG_BTR, "CD is now %d.\n", CD); - set_current_state (TASK_INTERRUPTIBLE); - if (tty_hung_up_p(filp) || - !(port->flags & ASYNC_INITIALIZED)) { - if (port->flags & ASYNC_HUP_NOTIFY) - retval = -EAGAIN; - else - retval = -ERESTARTSYS; - break; - } - if (!(port->flags & ASYNC_CLOSING) && - (do_clocal || CD)) - break; - gs_dprintk (GS_DEBUG_BTR, "signal_pending is now: %d (%lx)\n", - (int)signal_pending (current), *(long*)(¤t->blocked)); - if (signal_pending(current)) { - retval = -ERESTARTSYS; - break; - } - schedule(); - } - gs_dprintk (GS_DEBUG_BTR, "Got out of the loop. (%d)\n", - port->blocked_open); - set_current_state (TASK_RUNNING); - remove_wait_queue(&port->open_wait, &wait); - - spin_lock_irqsave(&port->lock, flags); - if (!tty_hung_up_p(filp)) { - port->count++; - } - port->blocked_open--; - if (retval == 0) - port->flags |= ASYNC_NORMAL_ACTIVE; - spin_unlock_irqrestore(&port->lock, flags); - func_exit (); - return retval; -} - - -void gs_close(struct tty_struct * tty, struct file * filp) -{ - unsigned long flags; - struct gs_port *port; - - func_enter (); - - port = tty->driver_data; - - if (!port) return; - - if (!port->port.tty) { - /* This seems to happen when this is called from vhangup. */ - gs_dprintk (GS_DEBUG_CLOSE, "gs: Odd: port->port.tty is NULL\n"); - port->port.tty = tty; - } - - spin_lock_irqsave(&port->port.lock, flags); - - if (tty_hung_up_p(filp)) { - spin_unlock_irqrestore(&port->port.lock, flags); - if (port->rd->hungup) - port->rd->hungup (port); - func_exit (); - return; - } - - if ((tty->count == 1) && (port->port.count != 1)) { - printk(KERN_ERR "gs: gs_close port %p: bad port count;" - " tty->count is 1, port count is %d\n", port, port->port.count); - port->port.count = 1; - } - if (--port->port.count < 0) { - printk(KERN_ERR "gs: gs_close port %p: bad port count: %d\n", port, port->port.count); - port->port.count = 0; - } - - if (port->port.count) { - gs_dprintk(GS_DEBUG_CLOSE, "gs_close port %p: count: %d\n", port, port->port.count); - spin_unlock_irqrestore(&port->port.lock, flags); - func_exit (); - return; - } - port->port.flags |= ASYNC_CLOSING; - - /* - * Now we wait for the transmit buffer to clear; and we notify - * the line discipline to only process XON/XOFF characters. - */ - tty->closing = 1; - /* if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) - tty_wait_until_sent(tty, port->closing_wait); */ - - /* - * At this point we stop accepting input. To do this, we - * disable the receive line status interrupts, and tell the - * interrupt driver to stop checking the data ready bit in the - * line status register. - */ - - spin_lock_irqsave(&port->driver_lock, flags); - port->rd->disable_rx_interrupts (port); - spin_unlock_irqrestore(&port->driver_lock, flags); - spin_unlock_irqrestore(&port->port.lock, flags); - - /* close has no way of returning "EINTR", so discard return value */ - if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) - gs_wait_tx_flushed (port, port->closing_wait); - - port->port.flags &= ~GS_ACTIVE; - - gs_flush_buffer(tty); - - tty_ldisc_flush(tty); - tty->closing = 0; - - spin_lock_irqsave(&port->driver_lock, flags); - port->event = 0; - port->rd->close (port); - port->rd->shutdown_port (port); - spin_unlock_irqrestore(&port->driver_lock, flags); - - spin_lock_irqsave(&port->port.lock, flags); - port->port.tty = NULL; - - if (port->port.blocked_open) { - if (port->close_delay) { - spin_unlock_irqrestore(&port->port.lock, flags); - msleep_interruptible(jiffies_to_msecs(port->close_delay)); - spin_lock_irqsave(&port->port.lock, flags); - } - wake_up_interruptible(&port->port.open_wait); - } - port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING | ASYNC_INITIALIZED); - spin_unlock_irqrestore(&port->port.lock, flags); - wake_up_interruptible(&port->port.close_wait); - - func_exit (); -} - - -void gs_set_termios (struct tty_struct * tty, - struct ktermios * old_termios) -{ - struct gs_port *port; - int baudrate, tmp, rv; - struct ktermios *tiosp; - - func_enter(); - - port = tty->driver_data; - - if (!port) return; - if (!port->port.tty) { - /* This seems to happen when this is called after gs_close. */ - gs_dprintk (GS_DEBUG_TERMIOS, "gs: Odd: port->port.tty is NULL\n"); - port->port.tty = tty; - } - - - tiosp = tty->termios; - - if (gs_debug & GS_DEBUG_TERMIOS) { - gs_dprintk (GS_DEBUG_TERMIOS, "termios structure (%p):\n", tiosp); - } - - if(old_termios && (gs_debug & GS_DEBUG_TERMIOS)) { - if(tiosp->c_iflag != old_termios->c_iflag) printk("c_iflag changed\n"); - if(tiosp->c_oflag != old_termios->c_oflag) printk("c_oflag changed\n"); - if(tiosp->c_cflag != old_termios->c_cflag) printk("c_cflag changed\n"); - if(tiosp->c_lflag != old_termios->c_lflag) printk("c_lflag changed\n"); - if(tiosp->c_line != old_termios->c_line) printk("c_line changed\n"); - if(!memcmp(tiosp->c_cc, old_termios->c_cc, NCC)) printk("c_cc changed\n"); - } - - baudrate = tty_get_baud_rate(tty); - - if ((tiosp->c_cflag & CBAUD) == B38400) { - if ( (port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - baudrate = 57600; - else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - baudrate = 115200; - else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - baudrate = 230400; - else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - baudrate = 460800; - else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) - baudrate = (port->baud_base / port->custom_divisor); - } - - /* I recommend using THIS instead of the mess in termios (and - duplicating the above code). Next we should create a clean - interface towards this variable. If your card supports arbitrary - baud rates, (e.g. CD1400 or 16550 based cards) then everything - will be very easy..... */ - port->baud = baudrate; - - /* Two timer ticks seems enough to wakeup something like SLIP driver */ - /* Baudrate/10 is cps. Divide by HZ to get chars per tick. */ - tmp = (baudrate / 10 / HZ) * 2; - - if (tmp < 0) tmp = 0; - if (tmp >= SERIAL_XMIT_SIZE) tmp = SERIAL_XMIT_SIZE-1; - - port->wakeup_chars = tmp; - - /* We should really wait for the characters to be all sent before - changing the settings. -- CAL */ - rv = gs_wait_tx_flushed (port, MAX_SCHEDULE_TIMEOUT); - if (rv < 0) return /* rv */; - - rv = port->rd->set_real_termios(port); - if (rv < 0) return /* rv */; - - if ((!old_termios || - (old_termios->c_cflag & CRTSCTS)) && - !( tiosp->c_cflag & CRTSCTS)) { - tty->stopped = 0; - gs_start(tty); - } - -#ifdef tytso_patch_94Nov25_1726 - /* This "makes sense", Why is it commented out? */ - - if (!(old_termios->c_cflag & CLOCAL) && - (tty->termios->c_cflag & CLOCAL)) - wake_up_interruptible(&port->gs.open_wait); -#endif - - func_exit(); - return /* 0 */; -} - - - -/* Must be called with interrupts enabled */ -int gs_init_port(struct gs_port *port) -{ - unsigned long flags; - - func_enter (); - - if (port->port.flags & ASYNC_INITIALIZED) { - func_exit (); - return 0; - } - if (!port->xmit_buf) { - /* We may sleep in get_zeroed_page() */ - unsigned long tmp; - - tmp = get_zeroed_page(GFP_KERNEL); - spin_lock_irqsave (&port->driver_lock, flags); - if (port->xmit_buf) - free_page (tmp); - else - port->xmit_buf = (unsigned char *) tmp; - spin_unlock_irqrestore(&port->driver_lock, flags); - if (!port->xmit_buf) { - func_exit (); - return -ENOMEM; - } - } - - spin_lock_irqsave (&port->driver_lock, flags); - if (port->port.tty) - clear_bit(TTY_IO_ERROR, &port->port.tty->flags); - mutex_init(&port->port_write_mutex); - port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; - spin_unlock_irqrestore(&port->driver_lock, flags); - gs_set_termios(port->port.tty, NULL); - spin_lock_irqsave (&port->driver_lock, flags); - port->port.flags |= ASYNC_INITIALIZED; - port->port.flags &= ~GS_TX_INTEN; - - spin_unlock_irqrestore(&port->driver_lock, flags); - func_exit (); - return 0; -} - - -int gs_setserial(struct gs_port *port, struct serial_struct __user *sp) -{ - struct serial_struct sio; - - if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) - return(-EFAULT); - - if (!capable(CAP_SYS_ADMIN)) { - if ((sio.baud_base != port->baud_base) || - (sio.close_delay != port->close_delay) || - ((sio.flags & ~ASYNC_USR_MASK) != - (port->port.flags & ~ASYNC_USR_MASK))) - return(-EPERM); - } - - port->port.flags = (port->port.flags & ~ASYNC_USR_MASK) | - (sio.flags & ASYNC_USR_MASK); - - port->baud_base = sio.baud_base; - port->close_delay = sio.close_delay; - port->closing_wait = sio.closing_wait; - port->custom_divisor = sio.custom_divisor; - - gs_set_termios (port->port.tty, NULL); - - return 0; -} - - -/*****************************************************************************/ - -/* - * Generate the serial struct info. - */ - -int gs_getserial(struct gs_port *port, struct serial_struct __user *sp) -{ - struct serial_struct sio; - - memset(&sio, 0, sizeof(struct serial_struct)); - sio.flags = port->port.flags; - sio.baud_base = port->baud_base; - sio.close_delay = port->close_delay; - sio.closing_wait = port->closing_wait; - sio.custom_divisor = port->custom_divisor; - sio.hub6 = 0; - - /* If you want you can override these. */ - sio.type = PORT_UNKNOWN; - sio.xmit_fifo_size = -1; - sio.line = -1; - sio.port = -1; - sio.irq = -1; - - if (port->rd->getserial) - port->rd->getserial (port, &sio); - - if (copy_to_user(sp, &sio, sizeof(struct serial_struct))) - return -EFAULT; - return 0; - -} - - -void gs_got_break(struct gs_port *port) -{ - func_enter (); - - tty_insert_flip_char(port->port.tty, 0, TTY_BREAK); - tty_schedule_flip(port->port.tty); - if (port->port.flags & ASYNC_SAK) { - do_SAK (port->port.tty); - } - - func_exit (); -} - - -EXPORT_SYMBOL(gs_put_char); -EXPORT_SYMBOL(gs_write); -EXPORT_SYMBOL(gs_write_room); -EXPORT_SYMBOL(gs_chars_in_buffer); -EXPORT_SYMBOL(gs_flush_buffer); -EXPORT_SYMBOL(gs_flush_chars); -EXPORT_SYMBOL(gs_stop); -EXPORT_SYMBOL(gs_start); -EXPORT_SYMBOL(gs_hangup); -EXPORT_SYMBOL(gs_block_til_ready); -EXPORT_SYMBOL(gs_close); -EXPORT_SYMBOL(gs_set_termios); -EXPORT_SYMBOL(gs_init_port); -EXPORT_SYMBOL(gs_setserial); -EXPORT_SYMBOL(gs_getserial); -EXPORT_SYMBOL(gs_got_break); - -MODULE_LICENSE("GPL"); diff --git a/drivers/char/rio/Makefile b/drivers/char/rio/Makefile deleted file mode 100644 index 1661875883fb..000000000000 --- a/drivers/char/rio/Makefile +++ /dev/null @@ -1,12 +0,0 @@ -# -# Makefile for the linux rio-subsystem. -# -# (C) R.E.Wolff@BitWizard.nl -# -# This file is GPL. See other files for the full Blurb. I'm lazy today. -# - -obj-$(CONFIG_RIO) += rio.o - -rio-y := rio_linux.o rioinit.o rioboot.o riocmd.o rioctrl.o riointr.o \ - rioparam.o rioroute.o riotable.o riotty.o diff --git a/drivers/char/rio/board.h b/drivers/char/rio/board.h deleted file mode 100644 index bdea633a9076..000000000000 --- a/drivers/char/rio/board.h +++ /dev/null @@ -1,132 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : board.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:07 -** Retrieved : 11/6/98 11:34:20 -** -** ident @(#)board.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_board_h__ -#define __rio_board_h__ - -/* -** board.h contains the definitions for the *hardware* of the host cards. -** It describes the memory overlay for the dual port RAM area. -*/ - -#define DP_SRAM1_SIZE 0x7C00 -#define DP_SRAM2_SIZE 0x0200 -#define DP_SRAM3_SIZE 0x7000 -#define DP_SCRATCH_SIZE 0x1000 -#define DP_PARMMAP_ADDR 0x01FE /* offset into SRAM2 */ -#define DP_STARTUP_ADDR 0x01F8 /* offset into SRAM2 */ - -/* -** The shape of the Host Control area, at offset 0x7C00, Write Only -*/ -struct s_Ctrl { - u8 DpCtl; /* 7C00 */ - u8 Dp_Unused2_[127]; - u8 DpIntSet; /* 7C80 */ - u8 Dp_Unused3_[127]; - u8 DpTpuReset; /* 7D00 */ - u8 Dp_Unused4_[127]; - u8 DpIntReset; /* 7D80 */ - u8 Dp_Unused5_[127]; -}; - -/* -** The PROM data area on the host (0x7C00), Read Only -*/ -struct s_Prom { - u16 DpSlxCode[2]; - u16 DpRev; - u16 Dp_Unused6_; - u16 DpUniq[4]; - u16 DpJahre; - u16 DpWoche; - u16 DpHwFeature[5]; - u16 DpOemId; - u16 DpSiggy[16]; -}; - -/* -** Union of the Ctrl and Prom areas -*/ -union u_CtrlProm { /* This is the control/PROM area (0x7C00) */ - struct s_Ctrl DpCtrl; - struct s_Prom DpProm; -}; - -/* -** The top end of memory! -*/ -struct s_ParmMapS { /* Area containing Parm Map Pointer */ - u8 Dp_Unused8_[DP_PARMMAP_ADDR]; - u16 DpParmMapAd; -}; - -struct s_StartUpS { - u8 Dp_Unused9_[DP_STARTUP_ADDR]; - u8 Dp_LongJump[0x4]; - u8 Dp_Unused10_[2]; - u8 Dp_ShortJump[0x2]; -}; - -union u_Sram2ParmMap { /* This is the top of memory (0x7E00-0x7FFF) */ - u8 DpSramMem[DP_SRAM2_SIZE]; - struct s_ParmMapS DpParmMapS; - struct s_StartUpS DpStartUpS; -}; - -/* -** This is the DP RAM overlay. -*/ -struct DpRam { - u8 DpSram1[DP_SRAM1_SIZE]; /* 0000 - 7BFF */ - union u_CtrlProm DpCtrlProm; /* 7C00 - 7DFF */ - union u_Sram2ParmMap DpSram2ParmMap; /* 7E00 - 7FFF */ - u8 DpScratch[DP_SCRATCH_SIZE]; /* 8000 - 8FFF */ - u8 DpSram3[DP_SRAM3_SIZE]; /* 9000 - FFFF */ -}; - -#define DpControl DpCtrlProm.DpCtrl.DpCtl -#define DpSetInt DpCtrlProm.DpCtrl.DpIntSet -#define DpResetTpu DpCtrlProm.DpCtrl.DpTpuReset -#define DpResetInt DpCtrlProm.DpCtrl.DpIntReset - -#define DpSlx DpCtrlProm.DpProm.DpSlxCode -#define DpRevision DpCtrlProm.DpProm.DpRev -#define DpUnique DpCtrlProm.DpProm.DpUniq -#define DpYear DpCtrlProm.DpProm.DpJahre -#define DpWeek DpCtrlProm.DpProm.DpWoche -#define DpSignature DpCtrlProm.DpProm.DpSiggy - -#define DpParmMapR DpSram2ParmMap.DpParmMapS.DpParmMapAd -#define DpSram2 DpSram2ParmMap.DpSramMem - -#endif diff --git a/drivers/char/rio/cirrus.h b/drivers/char/rio/cirrus.h deleted file mode 100644 index 5ab51679caa2..000000000000 --- a/drivers/char/rio/cirrus.h +++ /dev/null @@ -1,210 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* CIRRUS.H ******* - ******* ******* - **************************************************************************** - - Author : Jeremy Rolls - Date : 3 Aug 1990 - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- - - ***************************************************************************/ - -#ifndef _cirrus_h -#define _cirrus_h 1 - -/* Bit fields for particular registers shared with driver */ - -/* COR1 - driver and RTA */ -#define RIOC_COR1_ODD 0x80 /* Odd parity */ -#define RIOC_COR1_EVEN 0x00 /* Even parity */ -#define RIOC_COR1_NOP 0x00 /* No parity */ -#define RIOC_COR1_FORCE 0x20 /* Force parity */ -#define RIOC_COR1_NORMAL 0x40 /* With parity */ -#define RIOC_COR1_1STOP 0x00 /* 1 stop bit */ -#define RIOC_COR1_15STOP 0x04 /* 1.5 stop bits */ -#define RIOC_COR1_2STOP 0x08 /* 2 stop bits */ -#define RIOC_COR1_5BITS 0x00 /* 5 data bits */ -#define RIOC_COR1_6BITS 0x01 /* 6 data bits */ -#define RIOC_COR1_7BITS 0x02 /* 7 data bits */ -#define RIOC_COR1_8BITS 0x03 /* 8 data bits */ - -#define RIOC_COR1_HOST 0xef /* Safe host bits */ - -/* RTA only */ -#define RIOC_COR1_CINPCK 0x00 /* Check parity of received characters */ -#define RIOC_COR1_CNINPCK 0x10 /* Don't check parity */ - -/* COR2 bits for both RTA and driver use */ -#define RIOC_COR2_IXANY 0x80 /* IXANY - any character is XON */ -#define RIOC_COR2_IXON 0x40 /* IXON - enable tx soft flowcontrol */ -#define RIOC_COR2_RTSFLOW 0x02 /* Enable tx hardware flow control */ - -/* Additional driver bits */ -#define RIOC_COR2_HUPCL 0x20 /* Hang up on close */ -#define RIOC_COR2_CTSFLOW 0x04 /* Enable rx hardware flow control */ -#define RIOC_COR2_IXOFF 0x01 /* Enable rx software flow control */ -#define RIOC_COR2_DTRFLOW 0x08 /* Enable tx hardware flow control */ - -/* RTA use only */ -#define RIOC_COR2_ETC 0x20 /* Embedded transmit options */ -#define RIOC_COR2_LOCAL 0x10 /* Local loopback mode */ -#define RIOC_COR2_REMOTE 0x08 /* Remote loopback mode */ -#define RIOC_COR2_HOST 0xc2 /* Safe host bits */ - -/* COR3 - RTA use only */ -#define RIOC_COR3_SCDRNG 0x80 /* Enable special char detect for range */ -#define RIOC_COR3_SCD34 0x40 /* Special character detect for SCHR's 3 + 4 */ -#define RIOC_COR3_FCT 0x20 /* Flow control transparency */ -#define RIOC_COR3_SCD12 0x10 /* Special character detect for SCHR's 1 + 2 */ -#define RIOC_COR3_FIFO12 0x0c /* 12 chars for receive FIFO threshold */ -#define RIOC_COR3_FIFO10 0x0a /* 10 chars for receive FIFO threshold */ -#define RIOC_COR3_FIFO8 0x08 /* 8 chars for receive FIFO threshold */ -#define RIOC_COR3_FIFO6 0x06 /* 6 chars for receive FIFO threshold */ - -#define RIOC_COR3_THRESHOLD RIOC_COR3_FIFO8 /* MUST BE LESS THAN MCOR_THRESHOLD */ - -#define RIOC_COR3_DEFAULT (RIOC_COR3_FCT | RIOC_COR3_THRESHOLD) - /* Default bits for COR3 */ - -/* COR4 driver and RTA use */ -#define RIOC_COR4_IGNCR 0x80 /* Throw away CR's on input */ -#define RIOC_COR4_ICRNL 0x40 /* Map CR -> NL on input */ -#define RIOC_COR4_INLCR 0x20 /* Map NL -> CR on input */ -#define RIOC_COR4_IGNBRK 0x10 /* Ignore Break */ -#define RIOC_COR4_NBRKINT 0x08 /* No interrupt on break (-BRKINT) */ -#define RIOC_COR4_RAISEMOD 0x01 /* Raise modem output lines on non-zero baud */ - - -/* COR4 driver only */ -#define RIOC_COR4_IGNPAR 0x04 /* IGNPAR (ignore characters with errors) */ -#define RIOC_COR4_PARMRK 0x02 /* PARMRK */ - -#define RIOC_COR4_HOST 0xf8 /* Safe host bits */ - -/* COR4 RTA only */ -#define RIOC_COR4_CIGNPAR 0x02 /* Thrown away bad characters */ -#define RIOC_COR4_CPARMRK 0x04 /* PARMRK characters */ -#define RIOC_COR4_CNPARMRK 0x03 /* Don't PARMRK */ - -/* COR5 driver and RTA use */ -#define RIOC_COR5_ISTRIP 0x80 /* Strip input chars to 7 bits */ -#define RIOC_COR5_LNE 0x40 /* Enable LNEXT processing */ -#define RIOC_COR5_CMOE 0x20 /* Match good and errored characters */ -#define RIOC_COR5_ONLCR 0x02 /* NL -> CR NL on output */ -#define RIOC_COR5_OCRNL 0x01 /* CR -> NL on output */ - -/* -** Spare bits - these are not used in the CIRRUS registers, so we use -** them to set various other features. -*/ -/* -** tstop and tbusy indication -*/ -#define RIOC_COR5_TSTATE_ON 0x08 /* Turn on monitoring of tbusy and tstop */ -#define RIOC_COR5_TSTATE_OFF 0x04 /* Turn off monitoring of tbusy and tstop */ -/* -** TAB3 -*/ -#define RIOC_COR5_TAB3 0x10 /* TAB3 mode */ - -#define RIOC_COR5_HOST 0xc3 /* Safe host bits */ - -/* CCSR */ -#define RIOC_CCSR_TXFLOFF 0x04 /* Tx is xoffed */ - -/* MSVR1 */ -/* NB. DTR / CD swapped from Cirrus spec as the pins are also reversed on the - RTA. This is because otherwise DCD would get lost on the 1 parallel / 3 - serial option. -*/ -#define RIOC_MSVR1_CD 0x80 /* CD (DSR on Cirrus) */ -#define RIOC_MSVR1_RTS 0x40 /* RTS (CTS on Cirrus) */ -#define RIOC_MSVR1_RI 0x20 /* RI */ -#define RIOC_MSVR1_DTR 0x10 /* DTR (CD on Cirrus) */ -#define RIOC_MSVR1_CTS 0x01 /* CTS output pin (RTS on Cirrus) */ -/* Next two used to indicate state of tbusy and tstop to driver */ -#define RIOC_MSVR1_TSTOP 0x08 /* Set if port flow controlled */ -#define RIOC_MSVR1_TEMPTY 0x04 /* Set if port tx buffer empty */ - -#define RIOC_MSVR1_HOST 0xf3 /* The bits the host wants */ - -/* Defines for the subscripts of a CONFIG packet */ -#define RIOC_CONFIG_COR1 1 /* Option register 1 */ -#define RIOC_CONFIG_COR2 2 /* Option register 2 */ -#define RIOC_CONFIG_COR4 3 /* Option register 4 */ -#define RIOC_CONFIG_COR5 4 /* Option register 5 */ -#define RIOC_CONFIG_TXXON 5 /* Tx XON character */ -#define RIOC_CONFIG_TXXOFF 6 /* Tx XOFF character */ -#define RIOC_CONFIG_RXXON 7 /* Rx XON character */ -#define RIOC_CONFIG_RXXOFF 8 /* Rx XOFF character */ -#define RIOC_CONFIG_LNEXT 9 /* LNEXT character */ -#define RIOC_CONFIG_TXBAUD 10 /* Tx baud rate */ -#define RIOC_CONFIG_RXBAUD 11 /* Rx baud rate */ - -#define RIOC_PRE_EMPTIVE 0x80 /* Pre-emptive bit in command field */ - -/* Packet types going from Host to remote - with the exception of OPEN, MOPEN, - CONFIG, SBREAK and MEMDUMP the remaining bytes of the data array will not - be used -*/ -#define RIOC_OPEN 0x00 /* Open a port */ -#define RIOC_CONFIG 0x01 /* Configure a port */ -#define RIOC_MOPEN 0x02 /* Modem open (block for DCD) */ -#define RIOC_CLOSE 0x03 /* Close a port */ -#define RIOC_WFLUSH (0x04 | RIOC_PRE_EMPTIVE) /* Write flush */ -#define RIOC_RFLUSH (0x05 | RIOC_PRE_EMPTIVE) /* Read flush */ -#define RIOC_RESUME (0x06 | RIOC_PRE_EMPTIVE) /* Resume if xoffed */ -#define RIOC_SBREAK 0x07 /* Start break */ -#define RIOC_EBREAK 0x08 /* End break */ -#define RIOC_SUSPEND (0x09 | RIOC_PRE_EMPTIVE) /* Susp op (behave as tho xoffed) */ -#define RIOC_FCLOSE (0x0a | RIOC_PRE_EMPTIVE) /* Force close */ -#define RIOC_XPRINT 0x0b /* Xprint packet */ -#define RIOC_MBIS (0x0c | RIOC_PRE_EMPTIVE) /* Set modem lines */ -#define RIOC_MBIC (0x0d | RIOC_PRE_EMPTIVE) /* Clear modem lines */ -#define RIOC_MSET (0x0e | RIOC_PRE_EMPTIVE) /* Set modem lines */ -#define RIOC_PCLOSE 0x0f /* Pseudo close - Leaves rx/tx enabled */ -#define RIOC_MGET (0x10 | RIOC_PRE_EMPTIVE) /* Force update of modem status */ -#define RIOC_MEMDUMP (0x11 | RIOC_PRE_EMPTIVE) /* Send back mem from addr supplied */ -#define RIOC_READ_REGISTER (0x12 | RIOC_PRE_EMPTIVE) /* Read CD1400 register (debug) */ - -/* "Command" packets going from remote to host COMPLETE and MODEM_STATUS - use data[4] / data[3] to indicate current state and modem status respectively -*/ - -#define RIOC_COMPLETE (0x20 | RIOC_PRE_EMPTIVE) - /* Command complete */ -#define RIOC_BREAK_RECEIVED (0x21 | RIOC_PRE_EMPTIVE) - /* Break received */ -#define RIOC_MODEM_STATUS (0x22 | RIOC_PRE_EMPTIVE) - /* Change in modem status */ - -/* "Command" packet that could go either way - handshake wake-up */ -#define RIOC_HANDSHAKE (0x23 | RIOC_PRE_EMPTIVE) - /* Wake-up to HOST / RTA */ - -#endif diff --git a/drivers/char/rio/cmdblk.h b/drivers/char/rio/cmdblk.h deleted file mode 100644 index 9ed4f861675a..000000000000 --- a/drivers/char/rio/cmdblk.h +++ /dev/null @@ -1,53 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : cmdblk.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:09 -** Retrieved : 11/6/98 11:34:20 -** -** ident @(#)cmdblk.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_cmdblk_h__ -#define __rio_cmdblk_h__ - -/* -** the structure of a command block, used to queue commands destined for -** a rup. -*/ - -struct CmdBlk { - struct CmdBlk *NextP; /* Pointer to next command block */ - struct PKT Packet; /* A packet, to copy to the rup */ - /* The func to call to check if OK */ - int (*PreFuncP) (unsigned long, struct CmdBlk *); - int PreArg; /* The arg for the func */ - /* The func to call when completed */ - int (*PostFuncP) (unsigned long, struct CmdBlk *); - int PostArg; /* The arg for the func */ -}; - -#define NUM_RIO_CMD_BLKS (3 * (MAX_RUP * 4 + LINKS_PER_UNIT * 4)) -#endif diff --git a/drivers/char/rio/cmdpkt.h b/drivers/char/rio/cmdpkt.h deleted file mode 100644 index c1e7a2798070..000000000000 --- a/drivers/char/rio/cmdpkt.h +++ /dev/null @@ -1,177 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : cmdpkt.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:09 -** Retrieved : 11/6/98 11:34:20 -** -** ident @(#)cmdpkt.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ -#ifndef __rio_cmdpkt_h__ -#define __rio_cmdpkt_h__ - -/* -** overlays for the data area of a packet. Used in both directions -** (to build a packet to send, and to interpret a packet that arrives) -** and is very inconvenient for MIPS, so they appear as two separate -** structures - those used for modifying/reading packets on the card -** and those for modifying/reading packets in real memory, which have an _M -** suffix. -*/ - -#define RTA_BOOT_DATA_SIZE (PKT_MAX_DATA_LEN-2) - -/* -** The boot information packet looks like this: -** This structure overlays a PktCmd->CmdData structure, and so starts -** at Data[2] in the actual pkt! -*/ -struct BootSequence { - u16 NumPackets; - u16 LoadBase; - u16 CodeSize; -}; - -#define BOOT_SEQUENCE_LEN 8 - -struct SamTop { - u8 Unit; - u8 Link; -}; - -struct CmdHdr { - u8 PcCommand; - union { - u8 PcPhbNum; - u8 PcLinkNum; - u8 PcIDNum; - } U0; -}; - - -struct PktCmd { - union { - struct { - struct CmdHdr CmdHdr; - struct BootSequence PcBootSequence; - } S1; - struct { - u16 PcSequence; - u8 PcBootData[RTA_BOOT_DATA_SIZE]; - } S2; - struct { - u16 __crud__; - u8 PcUniqNum[4]; /* this is really a uint. */ - u8 PcModuleTypes; /* what modules are fitted */ - } S3; - struct { - struct CmdHdr CmdHdr; - u8 __undefined__; - u8 PcModemStatus; - u8 PcPortStatus; - u8 PcSubCommand; /* commands like mem or register dump */ - u16 PcSubAddr; /* Address for command */ - u8 PcSubData[64]; /* Date area for command */ - } S4; - struct { - struct CmdHdr CmdHdr; - u8 PcCommandText[1]; - u8 __crud__[20]; - u8 PcIDNum2; /* It had to go somewhere! */ - } S5; - struct { - struct CmdHdr CmdHdr; - struct SamTop Topology[LINKS_PER_UNIT]; - } S6; - } U1; -}; - -struct PktCmd_M { - union { - struct { - struct { - u8 PcCommand; - union { - u8 PcPhbNum; - u8 PcLinkNum; - u8 PcIDNum; - } U0; - } CmdHdr; - struct { - u16 NumPackets; - u16 LoadBase; - u16 CodeSize; - } PcBootSequence; - } S1; - struct { - u16 PcSequence; - u8 PcBootData[RTA_BOOT_DATA_SIZE]; - } S2; - struct { - u16 __crud__; - u8 PcUniqNum[4]; /* this is really a uint. */ - u8 PcModuleTypes; /* what modules are fitted */ - } S3; - struct { - u16 __cmd_hdr__; - u8 __undefined__; - u8 PcModemStatus; - u8 PcPortStatus; - u8 PcSubCommand; - u16 PcSubAddr; - u8 PcSubData[64]; - } S4; - struct { - u16 __cmd_hdr__; - u8 PcCommandText[1]; - u8 __crud__[20]; - u8 PcIDNum2; /* Tacked on end */ - } S5; - struct { - u16 __cmd_hdr__; - struct Top Topology[LINKS_PER_UNIT]; - } S6; - } U1; -}; - -#define Command U1.S1.CmdHdr.PcCommand -#define PhbNum U1.S1.CmdHdr.U0.PcPhbNum -#define IDNum U1.S1.CmdHdr.U0.PcIDNum -#define IDNum2 U1.S5.PcIDNum2 -#define LinkNum U1.S1.CmdHdr.U0.PcLinkNum -#define Sequence U1.S2.PcSequence -#define BootData U1.S2.PcBootData -#define BootSequence U1.S1.PcBootSequence -#define UniqNum U1.S3.PcUniqNum -#define ModemStatus U1.S4.PcModemStatus -#define PortStatus U1.S4.PcPortStatus -#define SubCommand U1.S4.PcSubCommand -#define SubAddr U1.S4.PcSubAddr -#define SubData U1.S4.PcSubData -#define CommandText U1.S5.PcCommandText -#define RouteTopology U1.S6.Topology -#define ModuleTypes U1.S3.PcModuleTypes - -#endif diff --git a/drivers/char/rio/daemon.h b/drivers/char/rio/daemon.h deleted file mode 100644 index 4af90323fd00..000000000000 --- a/drivers/char/rio/daemon.h +++ /dev/null @@ -1,307 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : daemon.h -** SID : 1.3 -** Last Modified : 11/6/98 11:34:09 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)daemon.h 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_daemon_h__ -#define __rio_daemon_h__ - - -/* -** structures used on /dev/rio -*/ - -struct Error { - unsigned int Error; - unsigned int Entry; - unsigned int Other; -}; - -struct DownLoad { - char __user *DataP; - unsigned int Count; - unsigned int ProductCode; -}; - -/* -** A few constants.... -*/ -#ifndef MAX_VERSION_LEN -#define MAX_VERSION_LEN 256 -#endif - -#ifndef MAX_XP_CTRL_LEN -#define MAX_XP_CTRL_LEN 16 /* ALSO IN PORT.H */ -#endif - -struct PortSetup { - unsigned int From; /* Set/Clear XP & IXANY Control from this port.... */ - unsigned int To; /* .... to this port */ - unsigned int XpCps; /* at this speed */ - char XpOn[MAX_XP_CTRL_LEN]; /* this is the start string */ - char XpOff[MAX_XP_CTRL_LEN]; /* this is the stop string */ - u8 IxAny; /* enable/disable IXANY */ - u8 IxOn; /* enable/disable IXON */ - u8 Lock; /* lock port params */ - u8 Store; /* store params across closes */ - u8 Drain; /* close only when drained */ -}; - -struct LpbReq { - unsigned int Host; - unsigned int Link; - struct LPB __user *LpbP; -}; - -struct RupReq { - unsigned int HostNum; - unsigned int RupNum; - struct RUP __user *RupP; -}; - -struct PortReq { - unsigned int SysPort; - struct Port __user *PortP; -}; - -struct StreamInfo { - unsigned int SysPort; - int RQueue; - int WQueue; -}; - -struct HostReq { - unsigned int HostNum; - struct Host __user *HostP; -}; - -struct HostDpRam { - unsigned int HostNum; - struct DpRam __user *DpRamP; -}; - -struct DebugCtrl { - unsigned int SysPort; - unsigned int Debug; - unsigned int Wait; -}; - -struct MapInfo { - unsigned int FirstPort; /* 8 ports, starting from this (tty) number */ - unsigned int RtaUnique; /* reside on this RTA (unique number) */ -}; - -struct MapIn { - unsigned int NumEntries; /* How many port sets are we mapping? */ - struct MapInfo *MapInfoP; /* Pointer to (user space) info */ -}; - -struct SendPack { - unsigned int PortNum; - unsigned char Len; - unsigned char Data[PKT_MAX_DATA_LEN]; -}; - -struct SpecialRupCmd { - struct PKT Packet; - unsigned short Host; - unsigned short RupNum; -}; - -struct IdentifyRta { - unsigned long RtaUnique; - u8 ID; -}; - -struct KillNeighbour { - unsigned long UniqueNum; - u8 Link; -}; - -struct rioVersion { - char version[MAX_VERSION_LEN]; - char relid[MAX_VERSION_LEN]; - int buildLevel; - char buildDate[MAX_VERSION_LEN]; -}; - - -/* -** RIOC commands are for the daemon type operations -** -** 09.12.1998 ARG - ESIL 0776 part fix -** Definition for 'RIOC' also appears in rioioctl.h, so we'd better do a -** #ifndef here first. -** rioioctl.h also now has #define 'RIO_QUICK_CHECK' as this ioctl is now -** allowed to be used by customers. -*/ -#ifndef RIOC -#define RIOC ('R'<<8)|('i'<<16)|('o'<<24) -#endif - -/* -** Boot stuff -*/ -#define RIO_GET_TABLE (RIOC | 100) -#define RIO_PUT_TABLE (RIOC | 101) -#define RIO_ASSIGN_RTA (RIOC | 102) -#define RIO_DELETE_RTA (RIOC | 103) -#define RIO_HOST_FOAD (RIOC | 104) -#define RIO_QUICK_CHECK (RIOC | 105) -#define RIO_SIGNALS_ON (RIOC | 106) -#define RIO_SIGNALS_OFF (RIOC | 107) -#define RIO_CHANGE_NAME (RIOC | 108) -#define RIO_DOWNLOAD (RIOC | 109) -#define RIO_GET_LOG (RIOC | 110) -#define RIO_SETUP_PORTS (RIOC | 111) -#define RIO_ALL_MODEM (RIOC | 112) - -/* -** card state, debug stuff -*/ -#define RIO_NUM_HOSTS (RIOC | 120) -#define RIO_HOST_LPB (RIOC | 121) -#define RIO_HOST_RUP (RIOC | 122) -#define RIO_HOST_PORT (RIOC | 123) -#define RIO_PARMS (RIOC | 124) -#define RIO_HOST_REQ (RIOC | 125) -#define RIO_READ_CONFIG (RIOC | 126) -#define RIO_SET_CONFIG (RIOC | 127) -#define RIO_VERSID (RIOC | 128) -#define RIO_FLAGS (RIOC | 129) -#define RIO_SETDEBUG (RIOC | 130) -#define RIO_GETDEBUG (RIOC | 131) -#define RIO_READ_LEVELS (RIOC | 132) -#define RIO_SET_FAST_BUS (RIOC | 133) -#define RIO_SET_SLOW_BUS (RIOC | 134) -#define RIO_SET_BYTE_MODE (RIOC | 135) -#define RIO_SET_WORD_MODE (RIOC | 136) -#define RIO_STREAM_INFO (RIOC | 137) -#define RIO_START_POLLER (RIOC | 138) -#define RIO_STOP_POLLER (RIOC | 139) -#define RIO_LAST_ERROR (RIOC | 140) -#define RIO_TICK (RIOC | 141) -#define RIO_TOCK (RIOC | 241) /* I did this on purpose, you know. */ -#define RIO_SEND_PACKET (RIOC | 142) -#define RIO_SET_BUSY (RIOC | 143) -#define SPECIAL_RUP_CMD (RIOC | 144) -#define RIO_FOAD_RTA (RIOC | 145) -#define RIO_ZOMBIE_RTA (RIOC | 146) -#define RIO_IDENTIFY_RTA (RIOC | 147) -#define RIO_KILL_NEIGHBOUR (RIOC | 148) -#define RIO_DEBUG_MEM (RIOC | 149) -/* -** 150 - 167 used..... See below -*/ -#define RIO_GET_PORT_SETUP (RIOC | 168) -#define RIO_RESUME (RIOC | 169) -#define RIO_MESG (RIOC | 170) -#define RIO_NO_MESG (RIOC | 171) -#define RIO_WHAT_MESG (RIOC | 172) -#define RIO_HOST_DPRAM (RIOC | 173) -#define RIO_MAP_B50_TO_50 (RIOC | 174) -#define RIO_MAP_B50_TO_57600 (RIOC | 175) -#define RIO_MAP_B110_TO_110 (RIOC | 176) -#define RIO_MAP_B110_TO_115200 (RIOC | 177) -#define RIO_GET_PORT_PARAMS (RIOC | 178) -#define RIO_SET_PORT_PARAMS (RIOC | 179) -#define RIO_GET_PORT_TTY (RIOC | 180) -#define RIO_SET_PORT_TTY (RIOC | 181) -#define RIO_SYSLOG_ONLY (RIOC | 182) -#define RIO_SYSLOG_CONS (RIOC | 183) -#define RIO_CONS_ONLY (RIOC | 184) -#define RIO_BLOCK_OPENS (RIOC | 185) - -/* -** 02.03.1999 ARG - ESIL 0820 fix : -** RIOBootMode is no longer use by the driver, so these ioctls -** are now obsolete : -** -#define RIO_GET_BOOT_MODE (RIOC | 186) -#define RIO_SET_BOOT_MODE (RIOC | 187) -** -*/ - -#define RIO_MEM_DUMP (RIOC | 189) -#define RIO_READ_REGISTER (RIOC | 190) -#define RIO_GET_MODTYPE (RIOC | 191) -#define RIO_SET_TIMER (RIOC | 192) -#define RIO_READ_CHECK (RIOC | 196) -#define RIO_WAITING_FOR_RESTART (RIOC | 197) -#define RIO_BIND_RTA (RIOC | 198) -#define RIO_GET_BINDINGS (RIOC | 199) -#define RIO_PUT_BINDINGS (RIOC | 200) - -#define RIO_MAKE_DEV (RIOC | 201) -#define RIO_MINOR (RIOC | 202) - -#define RIO_IDENTIFY_DRIVER (RIOC | 203) -#define RIO_DISPLAY_HOST_CFG (RIOC | 204) - - -/* -** MAKE_DEV / MINOR stuff -*/ -#define RIO_DEV_DIRECT 0x0000 -#define RIO_DEV_MODEM 0x0200 -#define RIO_DEV_XPRINT 0x0400 -#define RIO_DEV_MASK 0x0600 - -/* -** port management, xprint stuff -*/ -#define rIOCN(N) (RIOC|(N)) -#define rIOCR(N,T) (RIOC|(N)) -#define rIOCW(N,T) (RIOC|(N)) - -#define RIO_GET_XP_ON rIOCR(150,char[16]) /* start xprint string */ -#define RIO_SET_XP_ON rIOCW(151,char[16]) -#define RIO_GET_XP_OFF rIOCR(152,char[16]) /* finish xprint string */ -#define RIO_SET_XP_OFF rIOCW(153,char[16]) -#define RIO_GET_XP_CPS rIOCR(154,int) /* xprint CPS */ -#define RIO_SET_XP_CPS rIOCW(155,int) -#define RIO_GET_IXANY rIOCR(156,int) /* ixany allowed? */ -#define RIO_SET_IXANY rIOCW(157,int) -#define RIO_SET_IXANY_ON rIOCN(158) /* allow ixany */ -#define RIO_SET_IXANY_OFF rIOCN(159) /* disallow ixany */ -#define RIO_GET_MODEM rIOCR(160,int) /* port is modem/direct line? */ -#define RIO_SET_MODEM rIOCW(161,int) -#define RIO_SET_MODEM_ON rIOCN(162) /* port is a modem */ -#define RIO_SET_MODEM_OFF rIOCN(163) /* port is direct */ -#define RIO_GET_IXON rIOCR(164,int) /* ixon allowed? */ -#define RIO_SET_IXON rIOCW(165,int) -#define RIO_SET_IXON_ON rIOCN(166) /* allow ixon */ -#define RIO_SET_IXON_OFF rIOCN(167) /* disallow ixon */ - -#define RIO_GET_SIVIEW ((('s')<<8) | 106) /* backwards compatible with SI */ - -#define RIO_IOCTL_UNKNOWN -2 - -#endif diff --git a/drivers/char/rio/errors.h b/drivers/char/rio/errors.h deleted file mode 100644 index bdb05234090a..000000000000 --- a/drivers/char/rio/errors.h +++ /dev/null @@ -1,98 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : errors.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:10 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)errors.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_errors_h__ -#define __rio_errors_h__ - -/* -** error codes -*/ - -#define NOTHING_WRONG_AT_ALL 0 -#define BAD_CHARACTER_IN_NAME 1 -#define TABLE_ENTRY_ISNT_PROPERLY_NULL 2 -#define UNKNOWN_HOST_NUMBER 3 -#define ZERO_RTA_ID 4 -#define BAD_RTA_ID 5 -#define DUPLICATED_RTA_ID 6 -#define DUPLICATE_UNIQUE_NUMBER 7 -#define BAD_TTY_NUMBER 8 -#define TTY_NUMBER_IN_USE 9 -#define NAME_USED_TWICE 10 -#define HOST_ID_NOT_ZERO 11 -#define BOOT_IN_PROGRESS 12 -#define COPYIN_FAILED 13 -#define HOST_FILE_TOO_LARGE 14 -#define COPYOUT_FAILED 15 -#define NOT_SUPER_USER 16 -#define RIO_ALREADY_POLLING 17 - -#define ID_NUMBER_OUT_OF_RANGE 18 -#define PORT_NUMBER_OUT_OF_RANGE 19 -#define HOST_NUMBER_OUT_OF_RANGE 20 -#define RUP_NUMBER_OUT_OF_RANGE 21 -#define TTY_NUMBER_OUT_OF_RANGE 22 -#define LINK_NUMBER_OUT_OF_RANGE 23 - -#define HOST_NOT_RUNNING 24 -#define IOCTL_COMMAND_UNKNOWN 25 -#define RIO_SYSTEM_HALTED 26 -#define WAIT_FOR_DRAIN_BROKEN 27 -#define PORT_NOT_MAPPED_INTO_SYSTEM 28 -#define EXCLUSIVE_USE_SET 29 -#define WAIT_FOR_NOT_CLOSING_BROKEN 30 -#define WAIT_FOR_PORT_TO_OPEN_BROKEN 31 -#define WAIT_FOR_CARRIER_BROKEN 32 -#define WAIT_FOR_NOT_IN_USE_BROKEN 33 -#define WAIT_FOR_CAN_ADD_COMMAND_BROKEN 34 -#define WAIT_FOR_ADD_COMMAND_BROKEN 35 -#define WAIT_FOR_NOT_PARAM_BROKEN 36 -#define WAIT_FOR_RETRY_BROKEN 37 -#define HOST_HAS_ALREADY_BEEN_BOOTED 38 -#define UNIT_IS_IN_USE 39 -#define COULDNT_FIND_ENTRY 40 -#define RTA_UNIQUE_NUMBER_ZERO 41 -#define CLOSE_COMMAND_FAILED 42 -#define WAIT_FOR_CLOSE_BROKEN 43 -#define CPS_VALUE_OUT_OF_RANGE 44 -#define ID_ALREADY_IN_USE 45 -#define SIGNALS_ALREADY_SET 46 -#define NOT_RECEIVING_PROCESS 47 -#define RTA_NUMBER_WRONG 48 -#define NO_SUCH_PRODUCT 49 -#define HOST_SYSPORT_BAD 50 -#define ID_NOT_TENTATIVE 51 -#define XPRINT_CPS_OUT_OF_RANGE 52 -#define NOT_ENOUGH_CORE_FOR_PCI_COPY 53 - - -#endif /* __rio_errors_h__ */ diff --git a/drivers/char/rio/func.h b/drivers/char/rio/func.h deleted file mode 100644 index 078d44f85e45..000000000000 --- a/drivers/char/rio/func.h +++ /dev/null @@ -1,143 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : func.h -** SID : 1.3 -** Last Modified : 11/6/98 11:34:10 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)func.h 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __func_h_def -#define __func_h_def - -#include - -/* rioboot.c */ -int RIOBootCodeRTA(struct rio_info *, struct DownLoad *); -int RIOBootCodeHOST(struct rio_info *, struct DownLoad *); -int RIOBootCodeUNKNOWN(struct rio_info *, struct DownLoad *); -void msec_timeout(struct Host *); -int RIOBootRup(struct rio_info *, unsigned int, struct Host *, struct PKT __iomem *); -int RIOBootOk(struct rio_info *, struct Host *, unsigned long); -int RIORtaBound(struct rio_info *, unsigned int); -void rio_fill_host_slot(int, int, unsigned int, struct Host *); - -/* riocmd.c */ -int RIOFoadRta(struct Host *, struct Map *); -int RIOZombieRta(struct Host *, struct Map *); -int RIOCommandRta(struct rio_info *, unsigned long, int (*func) (struct Host *, struct Map *)); -int RIOIdentifyRta(struct rio_info *, void __user *); -int RIOKillNeighbour(struct rio_info *, void __user *); -int RIOSuspendBootRta(struct Host *, int, int); -int RIOFoadWakeup(struct rio_info *); -struct CmdBlk *RIOGetCmdBlk(void); -void RIOFreeCmdBlk(struct CmdBlk *); -int RIOQueueCmdBlk(struct Host *, unsigned int, struct CmdBlk *); -void RIOPollHostCommands(struct rio_info *, struct Host *); -int RIOWFlushMark(unsigned long, struct CmdBlk *); -int RIORFlushEnable(unsigned long, struct CmdBlk *); -int RIOUnUse(unsigned long, struct CmdBlk *); - -/* rioctrl.c */ -int riocontrol(struct rio_info *, dev_t, int, unsigned long, int); - -int RIOPreemptiveCmd(struct rio_info *, struct Port *, unsigned char); - -/* rioinit.c */ -void rioinit(struct rio_info *, struct RioHostInfo *); -void RIOInitHosts(struct rio_info *, struct RioHostInfo *); -void RIOISAinit(struct rio_info *, int); -int RIODoAT(struct rio_info *, int, int); -caddr_t RIOCheckForATCard(int); -int RIOAssignAT(struct rio_info *, int, void __iomem *, int); -int RIOBoardTest(unsigned long, void __iomem *, unsigned char, int); -void RIOAllocDataStructs(struct rio_info *); -void RIOSetupDataStructs(struct rio_info *); -int RIODefaultName(struct rio_info *, struct Host *, unsigned int); -struct rioVersion *RIOVersid(void); -void RIOHostReset(unsigned int, struct DpRam __iomem *, unsigned int); - -/* riointr.c */ -void RIOTxEnable(char *); -void RIOServiceHost(struct rio_info *, struct Host *); -int riotproc(struct rio_info *, struct ttystatics *, int, int); - -/* rioparam.c */ -int RIOParam(struct Port *, int, int, int); -int RIODelay(struct Port *PortP, int); -int RIODelay_ni(struct Port *PortP, int); -void ms_timeout(struct Port *); -int can_add_transmit(struct PKT __iomem **, struct Port *); -void add_transmit(struct Port *); -void put_free_end(struct Host *, struct PKT __iomem *); -int can_remove_receive(struct PKT __iomem **, struct Port *); -void remove_receive(struct Port *); - -/* rioroute.c */ -int RIORouteRup(struct rio_info *, unsigned int, struct Host *, struct PKT __iomem *); -void RIOFixPhbs(struct rio_info *, struct Host *, unsigned int); -unsigned int GetUnitType(unsigned int); -int RIOSetChange(struct rio_info *); -int RIOFindFreeID(struct rio_info *, struct Host *, unsigned int *, unsigned int *); - - -/* riotty.c */ - -int riotopen(struct tty_struct *tty, struct file *filp); -int riotclose(void *ptr); -int riotioctl(struct rio_info *, struct tty_struct *, int, caddr_t); -void ttyseth(struct Port *, struct ttystatics *, struct old_sgttyb *sg); - -/* riotable.c */ -int RIONewTable(struct rio_info *); -int RIOApel(struct rio_info *); -int RIODeleteRta(struct rio_info *, struct Map *); -int RIOAssignRta(struct rio_info *, struct Map *); -int RIOReMapPorts(struct rio_info *, struct Host *, struct Map *); -int RIOChangeName(struct rio_info *, struct Map *); - -#if 0 -/* riodrvr.c */ -struct rio_info *rio_install(struct RioHostInfo *); -int rio_uninstall(struct rio_info *); -int rio_open(struct rio_info *, int, struct file *); -int rio_close(struct rio_info *, struct file *); -int rio_read(struct rio_info *, struct file *, char *, int); -int rio_write(struct rio_info *, struct file *f, char *, int); -int rio_ioctl(struct rio_info *, struct file *, int, char *); -int rio_select(struct rio_info *, struct file *f, int, struct sel *); -int rio_intr(char *); -int rio_isr_thread(char *); -struct rio_info *rio_info_store(int cmd, struct rio_info *p); -#endif - -extern void rio_copy_to_card(void *from, void __iomem *to, int len); -extern int rio_minor(struct tty_struct *tty); -extern int rio_ismodem(struct tty_struct *tty); - -extern void rio_start_card_running(struct Host *HostP); - -#endif /* __func_h_def */ diff --git a/drivers/char/rio/host.h b/drivers/char/rio/host.h deleted file mode 100644 index 78f24540c224..000000000000 --- a/drivers/char/rio/host.h +++ /dev/null @@ -1,123 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : host.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:10 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)host.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_host_h__ -#define __rio_host_h__ - -/* -** the host structure - one per host card in the system. -*/ - -#define MAX_EXTRA_UNITS 64 - -/* -** Host data structure. This is used for the software equiv. of -** the host. -*/ -struct Host { - struct pci_dev *pdev; - unsigned char Type; /* RIO_EISA, RIO_MCA, ... */ - unsigned char Ivec; /* POLLED or ivec number */ - unsigned char Mode; /* Control stuff */ - unsigned char Slot; /* Slot */ - void __iomem *Caddr; /* KV address of DPRAM */ - struct DpRam __iomem *CardP; /* KV address of DPRAM, with overlay */ - unsigned long PaddrP; /* Phys. address of DPRAM */ - char Name[MAX_NAME_LEN]; /* The name of the host */ - unsigned int UniqueNum; /* host unique number */ - spinlock_t HostLock; /* Lock structure for MPX */ - unsigned int WorkToBeDone; /* set to true each interrupt */ - unsigned int InIntr; /* Being serviced? */ - unsigned int IntSrvDone; /* host's interrupt has been serviced */ - void (*Copy) (void *, void __iomem *, int); /* copy func */ - struct timer_list timer; - /* - ** I M P O R T A N T ! - ** - ** The rest of this data structure is cleared to zero after - ** a RIO_HOST_FOAD command. - */ - - unsigned long Flags; /* Whats going down */ -#define RC_WAITING 0 -#define RC_STARTUP 1 -#define RC_RUNNING 2 -#define RC_STUFFED 3 -#define RC_READY 7 -#define RUN_STATE 7 -/* -** Boot mode applies to the way in which hosts in this system will -** boot RTAs -*/ -#define RC_BOOT_ALL 0x8 /* Boot all RTAs attached */ -#define RC_BOOT_OWN 0x10 /* Only boot RTAs bound to this system */ -#define RC_BOOT_NONE 0x20 /* Don't boot any RTAs (slave mode) */ - - struct Top Topology[LINKS_PER_UNIT]; /* one per link */ - struct Map Mapping[MAX_RUP]; /* Mappings for host */ - struct PHB __iomem *PhbP; /* Pointer to the PHB array */ - unsigned short __iomem *PhbNumP; /* Ptr to Number of PHB's */ - struct LPB __iomem *LinkStrP; /* Link Structure Array */ - struct RUP __iomem *RupP; /* Sixteen real rups here */ - struct PARM_MAP __iomem *ParmMapP; /* points to the parmmap */ - unsigned int ExtraUnits[MAX_EXTRA_UNITS]; /* unknown things */ - unsigned int NumExtraBooted; /* how many of the above */ - /* - ** Twenty logical rups. - ** The first sixteen are the real Rup entries (above), the last four - ** are the link RUPs. - */ - struct UnixRup UnixRups[MAX_RUP + LINKS_PER_UNIT]; - int timeout_id; /* For calling 100 ms delays */ - int timeout_sem; /* For calling 100 ms delays */ - unsigned long locks; /* long req'd for set_bit --RR */ - char ____end_marker____; -}; -#define Control CardP->DpControl -#define SetInt CardP->DpSetInt -#define ResetTpu CardP->DpResetTpu -#define ResetInt CardP->DpResetInt -#define Signature CardP->DpSignature -#define Sram1 CardP->DpSram1 -#define Sram2 CardP->DpSram2 -#define Sram3 CardP->DpSram3 -#define Scratch CardP->DpScratch -#define __ParmMapR CardP->DpParmMapR -#define SLX CardP->DpSlx -#define Revision CardP->DpRevision -#define Unique CardP->DpUnique -#define Year CardP->DpYear -#define Week CardP->DpWeek - -#define RIO_DUMBPARM 0x0860 /* what not to expect */ - -#endif diff --git a/drivers/char/rio/link.h b/drivers/char/rio/link.h deleted file mode 100644 index f3bf11a04d41..000000000000 --- a/drivers/char/rio/link.h +++ /dev/null @@ -1,96 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* L I N K - ******* ******* - **************************************************************************** - - Author : Ian Nandhra / Jeremy Rolls - Date : - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- - - ***************************************************************************/ - -#ifndef _link_h -#define _link_h 1 - -/************************************************* - * Define the Link Status stuff - ************************************************/ -/* Boot request stuff */ -#define BOOT_REQUEST ((ushort) 0) /* Request for a boot */ -#define BOOT_ABORT ((ushort) 1) /* Abort a boot */ -#define BOOT_SEQUENCE ((ushort) 2) /* Packet with the number of packets - and load address */ -#define BOOT_COMPLETED ((ushort) 3) /* Boot completed */ - - -struct LPB { - u16 link_number; /* Link Number */ - u16 in_ch; /* Link In Channel */ - u16 out_ch; /* Link Out Channel */ - u8 attached_serial[4]; /* Attached serial number */ - u8 attached_host_serial[4]; - /* Serial number of Host who - booted the other end */ - u16 descheduled; /* Currently Descheduled */ - u16 state; /* Current state */ - u16 send_poll; /* Send a Poll Packet */ - u16 ltt_p; /* Process Descriptor */ - u16 lrt_p; /* Process Descriptor */ - u16 lrt_status; /* Current lrt status */ - u16 ltt_status; /* Current ltt status */ - u16 timeout; /* Timeout value */ - u16 topology; /* Topology bits */ - u16 mon_ltt; - u16 mon_lrt; - u16 WaitNoBoot; /* Secs to hold off booting */ - u16 add_packet_list; /* Add packets to here */ - u16 remove_packet_list; /* Send packets from here */ - - u16 lrt_fail_chan; /* Lrt's failure channel */ - u16 ltt_fail_chan; /* Ltt's failure channel */ - - /* RUP structure for HOST to driver communications */ - struct RUP rup; - struct RUP link_rup; /* RUP for the link (POLL, - topology etc.) */ - u16 attached_link; /* Number of attached link */ - u16 csum_errors; /* csum errors */ - u16 num_disconnects; /* number of disconnects */ - u16 num_sync_rcvd; /* # sync's received */ - u16 num_sync_rqst; /* # sync requests */ - u16 num_tx; /* Num pkts sent */ - u16 num_rx; /* Num pkts received */ - u16 module_attached; /* Module tpyes of attached */ - u16 led_timeout; /* LED timeout */ - u16 first_port; /* First port to service */ - u16 last_port; /* Last port to service */ -}; - -#endif - -/*********** end of file ***********/ diff --git a/drivers/char/rio/linux_compat.h b/drivers/char/rio/linux_compat.h deleted file mode 100644 index 34c0d2899ef1..000000000000 --- a/drivers/char/rio/linux_compat.h +++ /dev/null @@ -1,77 +0,0 @@ -/* - * (C) 2000 R.E.Wolff@BitWizard.nl - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include - - -#define DEBUG_ALL - -struct ttystatics { - struct termios tm; -}; - -extern int rio_debug; - -#define RIO_DEBUG_INIT 0x000001 -#define RIO_DEBUG_BOOT 0x000002 -#define RIO_DEBUG_CMD 0x000004 -#define RIO_DEBUG_CTRL 0x000008 -#define RIO_DEBUG_INTR 0x000010 -#define RIO_DEBUG_PARAM 0x000020 -#define RIO_DEBUG_ROUTE 0x000040 -#define RIO_DEBUG_TABLE 0x000080 -#define RIO_DEBUG_TTY 0x000100 -#define RIO_DEBUG_FLOW 0x000200 -#define RIO_DEBUG_MODEMSIGNALS 0x000400 -#define RIO_DEBUG_PROBE 0x000800 -#define RIO_DEBUG_CLEANUP 0x001000 -#define RIO_DEBUG_IFLOW 0x002000 -#define RIO_DEBUG_PFE 0x004000 -#define RIO_DEBUG_REC 0x008000 -#define RIO_DEBUG_SPINLOCK 0x010000 -#define RIO_DEBUG_DELAY 0x020000 -#define RIO_DEBUG_MOD_COUNT 0x040000 - - -/* Copied over from riowinif.h . This is ugly. The winif file declares -also much other stuff which is incompatible with the headers from -the older driver. The older driver includes "brates.h" which shadows -the definitions from Linux, and is incompatible... */ - -/* RxBaud and TxBaud definitions... */ -#define RIO_B0 0x00 /* RTS / DTR signals dropped */ -#define RIO_B50 0x01 /* 50 baud */ -#define RIO_B75 0x02 /* 75 baud */ -#define RIO_B110 0x03 /* 110 baud */ -#define RIO_B134 0x04 /* 134.5 baud */ -#define RIO_B150 0x05 /* 150 baud */ -#define RIO_B200 0x06 /* 200 baud */ -#define RIO_B300 0x07 /* 300 baud */ -#define RIO_B600 0x08 /* 600 baud */ -#define RIO_B1200 0x09 /* 1200 baud */ -#define RIO_B1800 0x0A /* 1800 baud */ -#define RIO_B2400 0x0B /* 2400 baud */ -#define RIO_B4800 0x0C /* 4800 baud */ -#define RIO_B9600 0x0D /* 9600 baud */ -#define RIO_B19200 0x0E /* 19200 baud */ -#define RIO_B38400 0x0F /* 38400 baud */ -#define RIO_B56000 0x10 /* 56000 baud */ -#define RIO_B57600 0x11 /* 57600 baud */ -#define RIO_B64000 0x12 /* 64000 baud */ -#define RIO_B115200 0x13 /* 115200 baud */ -#define RIO_B2000 0x14 /* 2000 baud */ diff --git a/drivers/char/rio/map.h b/drivers/char/rio/map.h deleted file mode 100644 index 8366978578c1..000000000000 --- a/drivers/char/rio/map.h +++ /dev/null @@ -1,98 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : map.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:11 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)map.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_map_h__ -#define __rio_map_h__ - -/* -** mapping structure passed to and from the config.rio program to -** determine the current topology of the world -*/ - -#define MAX_MAP_ENTRY 17 -#define TOTAL_MAP_ENTRIES (MAX_MAP_ENTRY*RIO_SLOTS) -#define MAX_NAME_LEN 32 - -struct Map { - unsigned int HostUniqueNum; /* Supporting hosts unique number */ - unsigned int RtaUniqueNum; /* Unique number */ - /* - ** The next two IDs must be swapped on big-endian architectures - ** when using a v2.04 /etc/rio/config with a v3.00 driver (when - ** upgrading for example). - */ - unsigned short ID; /* ID used in the subnet */ - unsigned short ID2; /* ID of 2nd block of 8 for 16 port */ - unsigned long Flags; /* Booted, ID Given, Disconnected */ - unsigned long SysPort; /* First tty mapped to this port */ - struct Top Topology[LINKS_PER_UNIT]; /* ID connected to each link */ - char Name[MAX_NAME_LEN]; /* Cute name by which RTA is known */ -}; - -/* -** Flag values: -*/ -#define RTA_BOOTED 0x00000001 -#define RTA_NEWBOOT 0x00000010 -#define MSG_DONE 0x00000020 -#define RTA_INTERCONNECT 0x00000040 -#define RTA16_SECOND_SLOT 0x00000080 -#define BEEN_HERE 0x00000100 -#define SLOT_TENTATIVE 0x40000000 -#define SLOT_IN_USE 0x80000000 - -/* -** HostUniqueNum is the unique number from the host card that this RTA -** is to be connected to. -** RtaUniqueNum is the unique number of the RTA concerned. It will be ZERO -** if the slot in the table is unused. If it is the same as the HostUniqueNum -** then this slot represents a host card. -** Flags contains current boot/route state info -** SysPort is a value in the range 0-504, being the number of the first tty -** on this RTA. Each RTA supports 8 ports. The SysPort value must be modulo 8. -** SysPort 0-127 correspond to /dev/ttyr001 to /dev/ttyr128, with minor -** numbers 0-127. SysPort 128-255 correspond to /dev/ttyr129 to /dev/ttyr256, -** again with minor numbers 0-127, and so on for SysPorts 256-383 and 384-511 -** ID will be in the range 0-16 for a `known' RTA. ID will be 0xFFFF for an -** unused slot/unknown ID etc. -** The Topology array contains the ID of the unit connected to each of the -** four links on this unit. The entry will be 0xFFFF if NOTHING is connected -** to the link, or will be 0xFF00 if an UNKNOWN unit is connected to the link. -** The Name field is a null-terminated string, upto 31 characters, containing -** the 'cute' name that the sysadmin/users know the RTA by. It is permissible -** for this string to contain any character in the range \040 to \176 inclusive. -** In particular, ctrl sequences and DEL (0x7F, \177) are not allowed. The -** special character '%' IS allowable, and needs no special action. -** -*/ - -#endif diff --git a/drivers/char/rio/param.h b/drivers/char/rio/param.h deleted file mode 100644 index 7e9b6283e8aa..000000000000 --- a/drivers/char/rio/param.h +++ /dev/null @@ -1,55 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : param.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:12 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)param.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_param_h__ -#define __rio_param_h__ - -/* -** the param command block, as used in OPEN and PARAM calls. -*/ - -struct phb_param { - u8 Cmd; /* It is very important that these line up */ - u8 Cor1; /* with what is expected at the other end. */ - u8 Cor2; /* to confirm that you've got it right, */ - u8 Cor4; /* check with cirrus/cirrus.h */ - u8 Cor5; - u8 TxXon; /* Transmit X-On character */ - u8 TxXoff; /* Transmit X-Off character */ - u8 RxXon; /* Receive X-On character */ - u8 RxXoff; /* Receive X-Off character */ - u8 LNext; /* Literal-next character */ - u8 TxBaud; /* Transmit baudrate */ - u8 RxBaud; /* Receive baudrate */ -}; - -#endif diff --git a/drivers/char/rio/parmmap.h b/drivers/char/rio/parmmap.h deleted file mode 100644 index acc8fa439df5..000000000000 --- a/drivers/char/rio/parmmap.h +++ /dev/null @@ -1,81 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* H O S T M E M O R Y M A P - ******* ******* - **************************************************************************** - - Author : Ian Nandhra / Jeremy Rolls - Date : - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- -6/4/1991 jonb Made changes to accommodate Mips R3230 bus - ***************************************************************************/ - -#ifndef _parmap_h -#define _parmap_h - -typedef struct PARM_MAP PARM_MAP; - -struct PARM_MAP { - u16 phb_ptr; /* Pointer to the PHB array */ - u16 phb_num_ptr; /* Ptr to Number of PHB's */ - u16 free_list; /* Free List pointer */ - u16 free_list_end; /* Free List End pointer */ - u16 q_free_list_ptr; /* Ptr to Q_BUF variable */ - u16 unit_id_ptr; /* Unit Id */ - u16 link_str_ptr; /* Link Structure Array */ - u16 bootloader_1; /* 1st Stage Boot Loader */ - u16 bootloader_2; /* 2nd Stage Boot Loader */ - u16 port_route_map_ptr; /* Port Route Map */ - u16 route_ptr; /* Unit Route Map */ - u16 map_present; /* Route Map present */ - s16 pkt_num; /* Total number of packets */ - s16 q_num; /* Total number of Q packets */ - u16 buffers_per_port; /* Number of buffers per port */ - u16 heap_size; /* Initial size of heap */ - u16 heap_left; /* Current Heap left */ - u16 error; /* Error code */ - u16 tx_max; /* Max number of tx pkts per phb */ - u16 rx_max; /* Max number of rx pkts per phb */ - u16 rx_limit; /* For high / low watermarks */ - s16 links; /* Links to use */ - s16 timer; /* Interrupts per second */ - u16 rups; /* Pointer to the RUPs */ - u16 max_phb; /* Mostly for debugging */ - u16 living; /* Just increments!! */ - u16 init_done; /* Initialisation over */ - u16 booting_link; - u16 idle_count; /* Idle time counter */ - u16 busy_count; /* Busy counter */ - u16 idle_control; /* Control Idle Process */ - u16 tx_intr; /* TX interrupt pending */ - u16 rx_intr; /* RX interrupt pending */ - u16 rup_intr; /* RUP interrupt pending */ -}; - -#endif - -/*********** end of file ***********/ diff --git a/drivers/char/rio/pci.h b/drivers/char/rio/pci.h deleted file mode 100644 index 6032f9135956..000000000000 --- a/drivers/char/rio/pci.h +++ /dev/null @@ -1,72 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : pci.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:12 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)pci.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_pci_h__ -#define __rio_pci_h__ - -/* -** PCI stuff -*/ - -#define PCITpFastClock 0x80 -#define PCITpSlowClock 0x00 -#define PCITpFastLinks 0x40 -#define PCITpSlowLinks 0x00 -#define PCITpIntEnable 0x04 -#define PCITpIntDisable 0x00 -#define PCITpBusEnable 0x02 -#define PCITpBusDisable 0x00 -#define PCITpBootFromRam 0x01 -#define PCITpBootFromLink 0x00 - -#define RIO_PCI_VENDOR 0x11CB -#define RIO_PCI_DEVICE 0x8000 -#define RIO_PCI_BASE_CLASS 0x02 -#define RIO_PCI_SUB_CLASS 0x80 -#define RIO_PCI_PROG_IFACE 0x00 - -#define RIO_PCI_RID 0x0008 -#define RIO_PCI_BADR0 0x0010 -#define RIO_PCI_INTLN 0x003C -#define RIO_PCI_INTPIN 0x003D - -#define RIO_PCI_MEM_SIZE 65536 - -#define RIO_PCI_TURBO_TP 0x80 -#define RIO_PCI_FAST_LINKS 0x40 -#define RIO_PCI_INT_ENABLE 0x04 -#define RIO_PCI_TP_BUS_ENABLE 0x02 -#define RIO_PCI_BOOT_FROM_RAM 0x01 - -#define RIO_PCI_DEFAULT_MODE 0x05 - -#endif /* __rio_pci_h__ */ diff --git a/drivers/char/rio/phb.h b/drivers/char/rio/phb.h deleted file mode 100644 index a4c48ae4e365..000000000000 --- a/drivers/char/rio/phb.h +++ /dev/null @@ -1,142 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* P H B H E A D E R ******* - ******* ******* - **************************************************************************** - - Author : Ian Nandhra, Jeremy Rolls - Date : - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- - - ***************************************************************************/ - -#ifndef _phb_h -#define _phb_h 1 - -/************************************************* - * Handshake asserted. Deasserted by the LTT(s) - ************************************************/ -#define PHB_HANDSHAKE_SET ((ushort) 0x001) /* Set by LRT */ - -#define PHB_HANDSHAKE_RESET ((ushort) 0x002) /* Set by ISR / driver */ - -#define PHB_HANDSHAKE_FLAGS (PHB_HANDSHAKE_RESET | PHB_HANDSHAKE_SET) - /* Reset by ltt */ - - -/************************************************* - * Maximum number of PHB's - ************************************************/ -#define MAX_PHB ((ushort) 128) /* range 0-127 */ - -/************************************************* - * Defines for the mode fields - ************************************************/ -#define TXPKT_INCOMPLETE 0x0001 /* Previous tx packet not completed */ -#define TXINTR_ENABLED 0x0002 /* Tx interrupt is enabled */ -#define TX_TAB3 0x0004 /* TAB3 mode */ -#define TX_OCRNL 0x0008 /* OCRNL mode */ -#define TX_ONLCR 0x0010 /* ONLCR mode */ -#define TX_SENDSPACES 0x0020 /* Send n spaces command needs - completing */ -#define TX_SENDNULL 0x0040 /* Escaping NULL needs completing */ -#define TX_SENDLF 0x0080 /* LF -> CR LF needs completing */ -#define TX_PARALLELBUG 0x0100 /* CD1400 LF -> CR LF bug on parallel - port */ -#define TX_HANGOVER (TX_SENDSPACES | TX_SENDLF | TX_SENDNULL) -#define TX_DTRFLOW 0x0200 /* DTR tx flow control */ -#define TX_DTRFLOWED 0x0400 /* DTR is low - don't allow more data - into the FIFO */ -#define TX_DATAINFIFO 0x0800 /* There is data in the FIFO */ -#define TX_BUSY 0x1000 /* Data in FIFO, shift or holding regs */ - -#define RX_SPARE 0x0001 /* SPARE */ -#define RXINTR_ENABLED 0x0002 /* Rx interrupt enabled */ -#define RX_ICRNL 0x0008 /* ICRNL mode */ -#define RX_INLCR 0x0010 /* INLCR mode */ -#define RX_IGNCR 0x0020 /* IGNCR mode */ -#define RX_CTSFLOW 0x0040 /* CTSFLOW enabled */ -#define RX_IXOFF 0x0080 /* IXOFF enabled */ -#define RX_CTSFLOWED 0x0100 /* CTSFLOW and CTS dropped */ -#define RX_IXOFFED 0x0200 /* IXOFF and xoff sent */ -#define RX_BUFFERED 0x0400 /* Try and pass on complete packets */ - -#define PORT_ISOPEN 0x0001 /* Port open? */ -#define PORT_HUPCL 0x0002 /* Hangup on close? */ -#define PORT_MOPENPEND 0x0004 /* Modem open pending */ -#define PORT_ISPARALLEL 0x0008 /* Parallel port */ -#define PORT_BREAK 0x0010 /* Port on break */ -#define PORT_STATUSPEND 0x0020 /* Status packet pending */ -#define PORT_BREAKPEND 0x0040 /* Break packet pending */ -#define PORT_MODEMPEND 0x0080 /* Modem status packet pending */ -#define PORT_PARALLELBUG 0x0100 /* CD1400 LF -> CR LF bug on parallel - port */ -#define PORT_FULLMODEM 0x0200 /* Full modem signals */ -#define PORT_RJ45 0x0400 /* RJ45 connector - no RI signal */ -#define PORT_RESTRICTED 0x0600 /* Restricted connector - no RI / DTR */ - -#define PORT_MODEMBITS 0x0600 /* Mask for modem fields */ - -#define PORT_WCLOSE 0x0800 /* Waiting for close */ -#define PORT_HANDSHAKEFIX 0x1000 /* Port has H/W flow control fix */ -#define PORT_WASPCLOSED 0x2000 /* Port closed with PCLOSE */ -#define DUMPMODE 0x4000 /* Dump RTA mem */ -#define READ_REG 0x8000 /* Read CD1400 register */ - - - -/************************************************************************** - * PHB Structure - * A few words. - * - * Normally Packets are added to the end of the list and removed from - * the start. The pointer tx_add points to a SPACE to put a Packet. - * The pointer tx_remove points to the next Packet to remove - *************************************************************************/ - -struct PHB { - u8 source; - u8 handshake; - u8 status; - u16 timeout; /* Maximum of 1.9 seconds */ - u8 link; /* Send down this link */ - u8 destination; - u16 tx_start; - u16 tx_end; - u16 tx_add; - u16 tx_remove; - - u16 rx_start; - u16 rx_end; - u16 rx_add; - u16 rx_remove; - -}; - -#endif - -/*********** end of file ***********/ diff --git a/drivers/char/rio/pkt.h b/drivers/char/rio/pkt.h deleted file mode 100644 index a9458164f02f..000000000000 --- a/drivers/char/rio/pkt.h +++ /dev/null @@ -1,77 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* P A C K E T H E A D E R F I L E - ******* ******* - **************************************************************************** - - Author : Ian Nandhra / Jeremy Rolls - Date : - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- - - ***************************************************************************/ - -#ifndef _pkt_h -#define _pkt_h 1 - -#define PKT_CMD_BIT ((ushort) 0x080) -#define PKT_CMD_DATA ((ushort) 0x080) - -#define PKT_ACK ((ushort) 0x040) - -#define PKT_TGL ((ushort) 0x020) - -#define PKT_LEN_MASK ((ushort) 0x07f) - -#define DATA_WNDW ((ushort) 0x10) -#define PKT_TTL_MASK ((ushort) 0x0f) - -#define PKT_MAX_DATA_LEN 72 - -#define PKT_LENGTH sizeof(struct PKT) -#define SYNC_PKT_LENGTH (PKT_LENGTH + 4) - -#define CONTROL_PKT_LEN_MASK PKT_LEN_MASK -#define CONTROL_PKT_CMD_BIT PKT_CMD_BIT -#define CONTROL_PKT_ACK (PKT_ACK << 8) -#define CONTROL_PKT_TGL (PKT_TGL << 8) -#define CONTROL_PKT_TTL_MASK (PKT_TTL_MASK << 8) -#define CONTROL_DATA_WNDW (DATA_WNDW << 8) - -struct PKT { - u8 dest_unit; /* Destination Unit Id */ - u8 dest_port; /* Destination POrt */ - u8 src_unit; /* Source Unit Id */ - u8 src_port; /* Source POrt */ - u8 len; - u8 control; - u8 data[PKT_MAX_DATA_LEN]; - /* Actual data :-) */ - u16 csum; /* C-SUM */ -}; -#endif - -/*********** end of file ***********/ diff --git a/drivers/char/rio/port.h b/drivers/char/rio/port.h deleted file mode 100644 index 49cf6d15ee54..000000000000 --- a/drivers/char/rio/port.h +++ /dev/null @@ -1,179 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : port.h -** SID : 1.3 -** Last Modified : 11/6/98 11:34:12 -** Retrieved : 11/6/98 11:34:21 -** -** ident @(#)port.h 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_port_h__ -#define __rio_port_h__ - -/* -** Port data structure -*/ -struct Port { - struct gs_port gs; - int PortNum; /* RIO port no., 0-511 */ - struct Host *HostP; - void __iomem *Caddr; - unsigned short HostPort; /* Port number on host card */ - unsigned char RupNum; /* Number of RUP for port */ - unsigned char ID2; /* Second ID of RTA for port */ - unsigned long State; /* FLAGS for open & xopen */ -#define RIO_LOPEN 0x00001 /* Local open */ -#define RIO_MOPEN 0x00002 /* Modem open */ -#define RIO_WOPEN 0x00004 /* Waiting for open */ -#define RIO_CLOSING 0x00008 /* The port is being close */ -#define RIO_XPBUSY 0x00010 /* Transparent printer busy */ -#define RIO_BREAKING 0x00020 /* Break in progress */ -#define RIO_DIRECT 0x00040 /* Doing Direct output */ -#define RIO_EXCLUSIVE 0x00080 /* Stream open for exclusive use */ -#define RIO_NDELAY 0x00100 /* Stream is open FNDELAY */ -#define RIO_CARR_ON 0x00200 /* Stream has carrier present */ -#define RIO_XPWANTR 0x00400 /* Stream wanted by Xprint */ -#define RIO_RBLK 0x00800 /* Stream is read-blocked */ -#define RIO_BUSY 0x01000 /* Stream is BUSY for write */ -#define RIO_TIMEOUT 0x02000 /* Stream timeout in progress */ -#define RIO_TXSTOP 0x04000 /* Stream output is stopped */ -#define RIO_WAITFLUSH 0x08000 /* Stream waiting for flush */ -#define RIO_DYNOROD 0x10000 /* Drain failed */ -#define RIO_DELETED 0x20000 /* RTA has been deleted */ -#define RIO_ISSCANCODE 0x40000 /* This line is in scancode mode */ -#define RIO_USING_EUC 0x100000 /* Using extended Unix chars */ -#define RIO_CAN_COOK 0x200000 /* This line can do cooking */ -#define RIO_TRIAD_MODE 0x400000 /* Enable TRIAD special ops. */ -#define RIO_TRIAD_BLOCK 0x800000 /* Next read will block */ -#define RIO_TRIAD_FUNC 0x1000000 /* Seen a function key coming in */ -#define RIO_THROTTLE_RX 0x2000000 /* RX needs to be throttled. */ - - unsigned long Config; /* FLAGS for NOREAD.... */ -#define RIO_NOREAD 0x0001 /* Are not allowed to read port */ -#define RIO_NOWRITE 0x0002 /* Are not allowed to write port */ -#define RIO_NOXPRINT 0x0004 /* Are not allowed to xprint port */ -#define RIO_NOMASK 0x0007 /* All not allowed things */ -#define RIO_IXANY 0x0008 /* Port is allowed ixany */ -#define RIO_MODEM 0x0010 /* Stream is a modem device */ -#define RIO_IXON 0x0020 /* Port is allowed ixon */ -#define RIO_WAITDRAIN 0x0040 /* Wait for port to completely drain */ -#define RIO_MAP_50_TO_50 0x0080 /* Map 50 baud to 50 baud */ -#define RIO_MAP_110_TO_110 0x0100 /* Map 110 baud to 110 baud */ - -/* -** 15.10.1998 ARG - ESIL 0761 prt fix -** As LynxOS does not appear to support Hardware Flow Control ..... -** Define our own flow control flags in 'Config'. -*/ -#define RIO_CTSFLOW 0x0200 /* RIO's own CTSFLOW flag */ -#define RIO_RTSFLOW 0x0400 /* RIO's own RTSFLOW flag */ - - - struct PHB __iomem *PhbP; /* pointer to PHB for port */ - u16 __iomem *TxAdd; /* Add packets here */ - u16 __iomem *TxStart; /* Start of add array */ - u16 __iomem *TxEnd; /* End of add array */ - u16 __iomem *RxRemove; /* Remove packets here */ - u16 __iomem *RxStart; /* Start of remove array */ - u16 __iomem *RxEnd; /* End of remove array */ - unsigned int RtaUniqueNum; /* Unique number of RTA */ - unsigned short PortState; /* status of port */ - unsigned short ModemState; /* status of modem lines */ - unsigned long ModemLines; /* Modem bits sent to RTA */ - unsigned char CookMode; /* who expands CR/LF? */ - unsigned char ParamSem; /* Prevent write during param */ - unsigned char Mapped; /* if port mapped onto host */ - unsigned char SecondBlock; /* if port belongs to 2nd block - of 16 port RTA */ - unsigned char InUse; /* how many pre-emptive cmds */ - unsigned char Lock; /* if params locked */ - unsigned char Store; /* if params stored across closes */ - unsigned char FirstOpen; /* TRUE if first time port opened */ - unsigned char FlushCmdBodge; /* if doing a (non)flush */ - unsigned char MagicFlags; /* require intr processing */ -#define MAGIC_FLUSH 0x01 /* mirror of WflushFlag */ -#define MAGIC_REBOOT 0x02 /* RTA re-booted, re-open ports */ -#define MORE_OUTPUT_EYGOR 0x04 /* riotproc failed to empty clists */ - unsigned char WflushFlag; /* 1 How many WFLUSHs active */ -/* -** Transparent print stuff -*/ - struct Xprint { -#ifndef MAX_XP_CTRL_LEN -#define MAX_XP_CTRL_LEN 16 /* ALSO IN DAEMON.H */ -#endif - unsigned int XpCps; - char XpOn[MAX_XP_CTRL_LEN]; - char XpOff[MAX_XP_CTRL_LEN]; - unsigned short XpLen; /* strlen(XpOn)+strlen(XpOff) */ - unsigned char XpActive; - unsigned char XpLastTickOk; /* TRUE if we can process */ -#define XP_OPEN 00001 -#define XP_RUNABLE 00002 - struct ttystatics *XttyP; - } Xprint; - unsigned char RxDataStart; - unsigned char Cor2Copy; /* copy of COR2 */ - char *Name; /* points to the Rta's name */ - char *TxRingBuffer; - unsigned short TxBufferIn; /* New data arrives here */ - unsigned short TxBufferOut; /* Intr removes data here */ - unsigned short OldTxBufferOut; /* Indicates if draining */ - int TimeoutId; /* Timeout ID */ - unsigned int Debug; - unsigned char WaitUntilBooted; /* True if open should block */ - unsigned int statsGather; /* True if gathering stats */ - unsigned long txchars; /* Chars transmitted */ - unsigned long rxchars; /* Chars received */ - unsigned long opens; /* port open count */ - unsigned long closes; /* port close count */ - unsigned long ioctls; /* ioctl count */ - unsigned char LastRxTgl; /* Last state of rx toggle bit */ - spinlock_t portSem; /* Lock using this sem */ - int MonitorTstate; /* Monitoring ? */ - int timeout_id; /* For calling 100 ms delays */ - int timeout_sem; /* For calling 100 ms delays */ - int firstOpen; /* First time open ? */ - char *p; /* save the global struc here .. */ -}; - -struct ModuleInfo { - char *Name; - unsigned int Flags[4]; /* one per port on a module */ -}; - -/* -** This struct is required because trying to grab an entire Port structure -** runs into problems with differing struct sizes between driver and config. -*/ -struct PortParams { - unsigned int Port; - unsigned long Config; - unsigned long State; - struct ttystatics *TtyP; -}; - -#endif diff --git a/drivers/char/rio/protsts.h b/drivers/char/rio/protsts.h deleted file mode 100644 index 8ab79401d3ee..000000000000 --- a/drivers/char/rio/protsts.h +++ /dev/null @@ -1,110 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* P R O T O C O L S T A T U S S T R U C T U R E ******* - ******* ******* - **************************************************************************** - - Author : Ian Nandhra / Jeremy Rolls - Date : - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- - - ***************************************************************************/ - -#ifndef _protsts_h -#define _protsts_h 1 - -/************************************************* - * ACK bit. Last Packet received OK. Set by - * rxpkt to indicate that the Packet has been - * received OK and that the LTT must set the ACK - * bit in the next outward bound Packet - * and re-set by LTT's after xmit. - * - * Gets shoved into rx_status - ************************************************/ -#define PHB_RX_LAST_PKT_ACKED ((ushort) 0x080) - -/******************************************************* - * The Rx TOGGLE bit. - * Stuffed into rx_status by RXPKT - ******************************************************/ -#define PHB_RX_DATA_WNDW ((ushort) 0x040) - -/******************************************************* - * The Rx TOGGLE bit. Matches the setting in PKT.H - * Stuffed into rx_status - ******************************************************/ -#define PHB_RX_TGL ((ushort) 0x2000) - - -/************************************************* - * This bit is set by the LRT to indicate that - * an ACK (packet) must be returned. - * - * Gets shoved into tx_status - ************************************************/ -#define PHB_TX_SEND_PKT_ACK ((ushort) 0x08) - -/************************************************* - * Set by LTT to indicate that an ACK is required - *************************************************/ -#define PHB_TX_ACK_RQRD ((ushort) 0x01) - - -/******************************************************* - * The Tx TOGGLE bit. - * Stuffed into tx_status by RXPKT from the PKT WndW - * field. Looked by the LTT when the NEXT Packet - * is going to be sent. - ******************************************************/ -#define PHB_TX_DATA_WNDW ((ushort) 0x04) - - -/******************************************************* - * The Tx TOGGLE bit. Matches the setting in PKT.H - * Stuffed into tx_status - ******************************************************/ -#define PHB_TX_TGL ((ushort) 0x02) - -/******************************************************* - * Request intr bit. Set when the queue has gone quiet - * and the PHB has requested an interrupt. - ******************************************************/ -#define PHB_TX_INTR ((ushort) 0x100) - -/******************************************************* - * SET if the PHB cannot send any more data down the - * Link - ******************************************************/ -#define PHB_TX_HANDSHAKE ((ushort) 0x010) - - -#define RUP_SEND_WNDW ((ushort) 0x08) ; - -#endif - -/*********** end of file ***********/ diff --git a/drivers/char/rio/rio.h b/drivers/char/rio/rio.h deleted file mode 100644 index 1bf36223a4e8..000000000000 --- a/drivers/char/rio/rio.h +++ /dev/null @@ -1,208 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 1998 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rio.h -** SID : 1.3 -** Last Modified : 11/6/98 11:34:13 -** Retrieved : 11/6/98 11:34:22 -** -** ident @(#)rio.h 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_rio_h__ -#define __rio_rio_h__ - -/* -** Maximum numbers of things -*/ -#define RIO_SLOTS 4 /* number of configuration slots */ -#define RIO_HOSTS 4 /* number of hosts that can be found */ -#define PORTS_PER_HOST 128 /* number of ports per host */ -#define LINKS_PER_UNIT 4 /* number of links from a host */ -#define RIO_PORTS (PORTS_PER_HOST * RIO_HOSTS) /* max. no. of ports */ -#define RTAS_PER_HOST (MAX_RUP) /* number of RTAs per host */ -#define PORTS_PER_RTA (PORTS_PER_HOST/RTAS_PER_HOST) /* ports on a rta */ -#define PORTS_PER_MODULE 4 /* number of ports on a plug-in module */ - /* number of modules on an RTA */ -#define MODULES_PER_RTA (PORTS_PER_RTA/PORTS_PER_MODULE) -#define MAX_PRODUCT 16 /* numbr of different product codes */ -#define MAX_MODULE_TYPES 16 /* number of different types of module */ - -#define RIO_CONTROL_DEV 128 /* minor number of host/control device */ -#define RIO_INVALID_MAJOR 0 /* test first host card's major no for validity */ - -/* -** number of RTAs that can be bound to a master -*/ -#define MAX_RTA_BINDINGS (MAX_RUP * RIO_HOSTS) - -/* -** Unit types -*/ -#define PC_RTA16 0x90000000 -#define PC_RTA8 0xe0000000 -#define TYPE_HOST 0 -#define TYPE_RTA8 1 -#define TYPE_RTA16 2 - -/* -** Flag values returned by functions -*/ - -#define RIO_FAIL -1 - -/* -** SysPort value for something that hasn't any ports -*/ -#define NO_PORT 0xFFFFFFFF - -/* -** Unit ID Of all hosts -*/ -#define HOST_ID 0 - -/* -** Break bytes into nybles -*/ -#define LONYBLE(X) ((X) & 0xF) -#define HINYBLE(X) (((X)>>4) & 0xF) - -/* -** Flag values passed into some functions -*/ -#define DONT_SLEEP 0 -#define OK_TO_SLEEP 1 - -#define DONT_PRINT 1 -#define DO_PRINT 0 - -#define PRINT_TO_LOG_CONS 0 -#define PRINT_TO_CONS 1 -#define PRINT_TO_LOG 2 - -/* -** Timeout has trouble with times of less than 3 ticks... -*/ -#define MIN_TIMEOUT 3 - -/* -** Generally useful constants -*/ - -#define HUNDRED_MS ((HZ/10)?(HZ/10):1) -#define ONE_MEG 0x100000 -#define SIXTY_FOUR_K 0x10000 - -#define RIO_AT_MEM_SIZE SIXTY_FOUR_K -#define RIO_EISA_MEM_SIZE SIXTY_FOUR_K -#define RIO_MCA_MEM_SIZE SIXTY_FOUR_K - -#define COOK_WELL 0 -#define COOK_MEDIUM 1 -#define COOK_RAW 2 - -/* -** Pointer manipulation stuff -** RIO_PTR takes hostp->Caddr and the offset into the DP RAM area -** and produces a UNIX caddr_t (pointer) to the object -** RIO_OBJ takes hostp->Caddr and a UNIX pointer to an object and -** returns the offset into the DP RAM area. -*/ -#define RIO_PTR(C,O) (((unsigned char __iomem *)(C))+(0xFFFF&(O))) -#define RIO_OFF(C,O) ((unsigned char __iomem *)(O)-(unsigned char __iomem *)(C)) - -/* -** How to convert from various different device number formats: -** DEV is a dev number, as passed to open, close etc - NOT a minor -** number! -**/ - -#define RIO_MODEM_MASK 0x1FF -#define RIO_MODEM_BIT 0x200 -#define RIO_UNMODEM(DEV) (MINOR(DEV) & RIO_MODEM_MASK) -#define RIO_ISMODEM(DEV) (MINOR(DEV) & RIO_MODEM_BIT) -#define RIO_PORT(DEV,FIRST_MAJ) ( (MAJOR(DEV) - FIRST_MAJ) * PORTS_PER_HOST) \ - + MINOR(DEV) -#define CSUM(pkt_ptr) (((u16 *)(pkt_ptr))[0] + ((u16 *)(pkt_ptr))[1] + \ - ((u16 *)(pkt_ptr))[2] + ((u16 *)(pkt_ptr))[3] + \ - ((u16 *)(pkt_ptr))[4] + ((u16 *)(pkt_ptr))[5] + \ - ((u16 *)(pkt_ptr))[6] + ((u16 *)(pkt_ptr))[7] + \ - ((u16 *)(pkt_ptr))[8] + ((u16 *)(pkt_ptr))[9] ) - -#define RIO_LINK_ENABLE 0x80FF /* FF is a hack, mainly for Mips, to */ - /* prevent a really stupid race condition. */ - -#define NOT_INITIALISED 0 -#define INITIALISED 1 - -#define NOT_POLLING 0 -#define POLLING 1 - -#define NOT_CHANGED 0 -#define CHANGED 1 - -#define NOT_INUSE 0 - -#define DISCONNECT 0 -#define CONNECT 1 - -/* ------ Control Codes ------ */ - -#define CONTROL '^' -#define IFOAD ( CONTROL + 1 ) -#define IDENTIFY ( CONTROL + 2 ) -#define ZOMBIE ( CONTROL + 3 ) -#define UFOAD ( CONTROL + 4 ) -#define IWAIT ( CONTROL + 5 ) - -#define IFOAD_MAGIC 0xF0AD /* of course */ -#define ZOMBIE_MAGIC (~0xDEAD) /* not dead -> zombie */ -#define UFOAD_MAGIC 0xD1E /* kill-your-neighbour */ -#define IWAIT_MAGIC 0xB1DE /* Bide your time */ - -/* ------ Error Codes ------ */ - -#define E_NO_ERROR ((ushort) 0) - -/* ------ Free Lists ------ */ - -struct rio_free_list { - u16 next; - u16 prev; -}; - -/* NULL for card side linked lists */ -#define TPNULL ((ushort)(0x8000)) -/* We can add another packet to a transmit queue if the packet pointer pointed - * to by the TxAdd pointer has PKT_IN_USE clear in its address. */ -#define PKT_IN_USE 0x1 - -/* ------ Topology ------ */ - -struct Top { - u8 Unit; - u8 Link; -}; - -#endif /* __rio_h__ */ diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c deleted file mode 100644 index 5e33293d24e3..000000000000 --- a/drivers/char/rio/rio_linux.c +++ /dev/null @@ -1,1204 +0,0 @@ - -/* rio_linux.c -- Linux driver for the Specialix RIO series cards. - * - * - * (C) 1999 R.E.Wolff@BitWizard.nl - * - * Specialix pays for the development and support of this driver. - * Please DO contact support@specialix.co.uk if you require - * support. But please read the documentation (rio.txt) first. - * - * - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, - * USA. - * - * */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include "linux_compat.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" -#include "param.h" -#include "protsts.h" -#include "rioboard.h" - - -#include "rio_linux.h" - -/* I don't think that this driver can handle more than 512 ports on -one machine. Specialix specifies max 4 boards in one machine. I don't -know why. If you want to try anyway you'll have to increase the number -of boards in rio.h. You'll have to allocate more majors if you need -more than 512 ports.... */ - -#ifndef RIO_NORMAL_MAJOR0 -/* This allows overriding on the compiler commandline, or in a "major.h" - include or something like that */ -#define RIO_NORMAL_MAJOR0 154 -#define RIO_NORMAL_MAJOR1 156 -#endif - -#ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 -#define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 -#endif - -#ifndef RIO_WINDOW_LEN -#define RIO_WINDOW_LEN 0x10000 -#endif - - -/* Configurable options: - (Don't be too sure that it'll work if you toggle them) */ - -/* Am I paranoid or not ? ;-) */ -#undef RIO_PARANOIA_CHECK - - -/* 20 -> 2000 per second. The card should rate-limit interrupts at 1000 - Hz, but it is user configurable. I don't recommend going above 1000 - Hz. The interrupt ratelimit might trigger if the interrupt is - shared with a very active other device. - undef this if you want to disable the check.... -*/ -#define IRQ_RATE_LIMIT 200 - - -/* These constants are derived from SCO Source */ -static DEFINE_MUTEX(rio_fw_mutex); -static struct Conf - RIOConf = { - /* locator */ "RIO Config here", - /* startuptime */ HZ * 2, - /* how long to wait for card to run */ - /* slowcook */ 0, - /* TRUE -> always use line disc. */ - /* intrpolltime */ 1, - /* The frequency of OUR polls */ - /* breakinterval */ 25, - /* x10 mS XXX: units seem to be 1ms not 10! -- REW */ - /* timer */ 10, - /* mS */ - /* RtaLoadBase */ 0x7000, - /* HostLoadBase */ 0x7C00, - /* XpHz */ 5, - /* number of Xprint hits per second */ - /* XpCps */ 120, - /* Xprint characters per second */ - /* XpOn */ "\033d#", - /* start Xprint for a wyse 60 */ - /* XpOff */ "\024", - /* end Xprint for a wyse 60 */ - /* MaxXpCps */ 2000, - /* highest Xprint speed */ - /* MinXpCps */ 10, - /* slowest Xprint speed */ - /* SpinCmds */ 1, - /* non-zero for mega fast boots */ - /* First Addr */ 0x0A0000, - /* First address to look at */ - /* Last Addr */ 0xFF0000, - /* Last address looked at */ - /* BufferSize */ 1024, - /* Bytes per port of buffering */ - /* LowWater */ 256, - /* how much data left before wakeup */ - /* LineLength */ 80, - /* how wide is the console? */ - /* CmdTimeout */ HZ, - /* how long a close command may take */ -}; - - - - -/* Function prototypes */ - -static void rio_disable_tx_interrupts(void *ptr); -static void rio_enable_tx_interrupts(void *ptr); -static void rio_disable_rx_interrupts(void *ptr); -static void rio_enable_rx_interrupts(void *ptr); -static int rio_carrier_raised(struct tty_port *port); -static void rio_shutdown_port(void *ptr); -static int rio_set_real_termios(void *ptr); -static void rio_hungup(void *ptr); -static void rio_close(void *ptr); -static int rio_chars_in_buffer(void *ptr); -static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); -static int rio_init_drivers(void); - -static void my_hd(void *addr, int len); - -static struct tty_driver *rio_driver, *rio_driver2; - -/* The name "p" is a bit non-descript. But that's what the rio-lynxos -sources use all over the place. */ -struct rio_info *p; - -int rio_debug; - - -/* You can have the driver poll your card. - - Set rio_poll to 1 to poll every timer tick (10ms on Intel). - This is used when the card cannot use an interrupt for some reason. -*/ -static int rio_poll = 1; - - -/* These are the only open spaces in my computer. Yours may have more - or less.... */ -static int rio_probe_addrs[] = { 0xc0000, 0xd0000, 0xe0000 }; - -#define NR_RIO_ADDRS ARRAY_SIZE(rio_probe_addrs) - - -/* Set the mask to all-ones. This alas, only supports 32 interrupts. - Some architectures may need more. -- Changed to LONG to - support up to 64 bits on 64bit architectures. -- REW 20/06/99 */ -static long rio_irqmask = -1; - -MODULE_AUTHOR("Rogier Wolff , Patrick van de Lageweg "); -MODULE_DESCRIPTION("RIO driver"); -MODULE_LICENSE("GPL"); -module_param(rio_poll, int, 0); -module_param(rio_debug, int, 0644); -module_param(rio_irqmask, long, 0); - -static struct real_driver rio_real_driver = { - rio_disable_tx_interrupts, - rio_enable_tx_interrupts, - rio_disable_rx_interrupts, - rio_enable_rx_interrupts, - rio_shutdown_port, - rio_set_real_termios, - rio_chars_in_buffer, - rio_close, - rio_hungup, - NULL -}; - -/* - * Firmware loader driver specific routines - * - */ - -static const struct file_operations rio_fw_fops = { - .owner = THIS_MODULE, - .unlocked_ioctl = rio_fw_ioctl, - .llseek = noop_llseek, -}; - -static struct miscdevice rio_fw_device = { - RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops -}; - - - - - -#ifdef RIO_PARANOIA_CHECK - -/* This doesn't work. Who's paranoid around here? Not me! */ - -static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine) -{ - - static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n"; - static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n"; - - if (!port) { - printk(badinfo, name, routine); - return 1; - } - if (port->magic != RIO_MAGIC) { - printk(badmagic, name, routine); - return 1; - } - - return 0; -} -#else -#define rio_paranoia_check(a,b,c) 0 -#endif - - -#ifdef DEBUG -static void my_hd(void *ad, int len) -{ - int i, j, ch; - unsigned char *addr = ad; - - for (i = 0; i < len; i += 16) { - rio_dprintk(RIO_DEBUG_PARAM, "%08lx ", (unsigned long) addr + i); - for (j = 0; j < 16; j++) { - rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : ""); - } - for (j = 0; j < 16; j++) { - ch = addr[j + i]; - rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch)); - } - rio_dprintk(RIO_DEBUG_PARAM, "\n"); - } -} -#else -#define my_hd(ad,len) do{/* nothing*/ } while (0) -#endif - - -/* Delay a number of jiffies, allowing a signal to interrupt */ -int RIODelay(struct Port *PortP, int njiffies) -{ - func_enter(); - - rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies); - msleep_interruptible(jiffies_to_msecs(njiffies)); - func_exit(); - - if (signal_pending(current)) - return RIO_FAIL; - else - return !RIO_FAIL; -} - - -/* Delay a number of jiffies, disallowing a signal to interrupt */ -int RIODelay_ni(struct Port *PortP, int njiffies) -{ - func_enter(); - - rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies); - msleep(jiffies_to_msecs(njiffies)); - func_exit(); - return !RIO_FAIL; -} - -void rio_copy_to_card(void *from, void __iomem *to, int len) -{ - rio_copy_toio(to, from, len); -} - -int rio_minor(struct tty_struct *tty) -{ - return tty->index + ((tty->driver == rio_driver) ? 0 : 256); -} - -static int rio_set_real_termios(void *ptr) -{ - return RIOParam((struct Port *) ptr, RIOC_CONFIG, 1, 1); -} - - -static void rio_reset_interrupt(struct Host *HostP) -{ - func_enter(); - - switch (HostP->Type) { - case RIO_AT: - case RIO_MCA: - case RIO_PCI: - writeb(0xFF, &HostP->ResetInt); - } - - func_exit(); -} - - -static irqreturn_t rio_interrupt(int irq, void *ptr) -{ - struct Host *HostP; - func_enter(); - - HostP = ptr; /* &p->RIOHosts[(long)ptr]; */ - rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec); - - /* AAargh! The order in which to do these things is essential and - not trivial. - - - hardware twiddling goes before "recursive". Otherwise when we - poll the card, and a recursive interrupt happens, we won't - ack the card, so it might keep on interrupting us. (especially - level sensitive interrupt systems like PCI). - - - Rate limit goes before hardware twiddling. Otherwise we won't - catch a card that has gone bonkers. - - - The "initialized" test goes after the hardware twiddling. Otherwise - the card will stick us in the interrupt routine again. - - - The initialized test goes before recursive. - */ - - rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n"); - if (HostP->Ivec == irq) { - /* Tell the card we've noticed the interrupt. */ - rio_reset_interrupt(HostP); - } - - if ((HostP->Flags & RUN_STATE) != RC_RUNNING) - return IRQ_HANDLED; - - if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) { - printk(KERN_ERR "Recursive interrupt! (host %p/irq%d)\n", ptr, HostP->Ivec); - return IRQ_HANDLED; - } - - RIOServiceHost(p, HostP); - - rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type); - - clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks); - rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec); - func_exit(); - return IRQ_HANDLED; -} - - -static void rio_pollfunc(unsigned long data) -{ - func_enter(); - - rio_interrupt(0, &p->RIOHosts[data]); - mod_timer(&p->RIOHosts[data].timer, jiffies + rio_poll); - - func_exit(); -} - - -/* ********************************************************************** * - * Here are the routines that actually * - * interface with the generic_serial driver * - * ********************************************************************** */ - -/* Ehhm. I don't know how to fiddle with interrupts on the Specialix - cards. .... Hmm. Ok I figured it out. You don't. -- REW */ - -static void rio_disable_tx_interrupts(void *ptr) -{ - func_enter(); - - /* port->gs.port.flags &= ~GS_TX_INTEN; */ - - func_exit(); -} - - -static void rio_enable_tx_interrupts(void *ptr) -{ - struct Port *PortP = ptr; - /* int hn; */ - - func_enter(); - - /* hn = PortP->HostP - p->RIOHosts; - - rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn); - rio_interrupt (-1,(void *) hn, NULL); */ - - RIOTxEnable((char *) PortP); - - /* - * In general we cannot count on "tx empty" interrupts, although - * the interrupt routine seems to be able to tell the difference. - */ - PortP->gs.port.flags &= ~GS_TX_INTEN; - - func_exit(); -} - - -static void rio_disable_rx_interrupts(void *ptr) -{ - func_enter(); - func_exit(); -} - -static void rio_enable_rx_interrupts(void *ptr) -{ - /* struct rio_port *port = ptr; */ - func_enter(); - func_exit(); -} - - -/* Jeez. Isn't this simple? */ -static int rio_carrier_raised(struct tty_port *port) -{ - struct Port *PortP = container_of(port, struct Port, gs.port); - int rv; - - func_enter(); - rv = (PortP->ModemState & RIOC_MSVR1_CD) != 0; - - rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv); - - func_exit(); - return rv; -} - - -/* Jeez. Isn't this simple? Actually, we can sync with the actual port - by just pushing stuff into the queue going to the port... */ -static int rio_chars_in_buffer(void *ptr) -{ - func_enter(); - - func_exit(); - return 0; -} - - -/* Nothing special here... */ -static void rio_shutdown_port(void *ptr) -{ - struct Port *PortP; - - func_enter(); - - PortP = (struct Port *) ptr; - PortP->gs.port.tty = NULL; - func_exit(); -} - - -/* I haven't the foggiest why the decrement use count has to happen - here. The whole linux serial drivers stuff needs to be redesigned. - My guess is that this is a hack to minimize the impact of a bug - elsewhere. Thinking about it some more. (try it sometime) Try - running minicom on a serial port that is driven by a modularized - driver. Have the modem hangup. Then remove the driver module. Then - exit minicom. I expect an "oops". -- REW */ -static void rio_hungup(void *ptr) -{ - struct Port *PortP; - - func_enter(); - - PortP = (struct Port *) ptr; - PortP->gs.port.tty = NULL; - - func_exit(); -} - - -/* The standard serial_close would become shorter if you'd wrap it like - this. - rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;} - */ -static void rio_close(void *ptr) -{ - struct Port *PortP; - - func_enter(); - - PortP = (struct Port *) ptr; - - riotclose(ptr); - - if (PortP->gs.port.count) { - printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.port.count); - PortP->gs.port.count = 0; - } - - PortP->gs.port.tty = NULL; - func_exit(); -} - - - -static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) -{ - int rc = 0; - func_enter(); - - /* The "dev" argument isn't used. */ - mutex_lock(&rio_fw_mutex); - rc = riocontrol(p, 0, cmd, arg, capable(CAP_SYS_ADMIN)); - mutex_unlock(&rio_fw_mutex); - - func_exit(); - return rc; -} - -extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg); - -static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg) -{ - void __user *argp = (void __user *)arg; - int rc; - struct Port *PortP; - int ival; - - func_enter(); - - PortP = (struct Port *) tty->driver_data; - - rc = 0; - switch (cmd) { - case TIOCSSOFTCAR: - if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) { - tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0); - } - break; - case TIOCGSERIAL: - rc = -EFAULT; - if (access_ok(VERIFY_WRITE, argp, sizeof(struct serial_struct))) - rc = gs_getserial(&PortP->gs, argp); - break; - case TCSBRK: - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); - rc = -EIO; - } else { - if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, 250) == - RIO_FAIL) { - rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); - rc = -EIO; - } - } - break; - case TCSBRKP: - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); - rc = -EIO; - } else { - int l; - l = arg ? arg * 100 : 250; - if (l > 255) - l = 255; - if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, - arg ? arg * 100 : 250) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); - rc = -EIO; - } - } - break; - case TIOCSSERIAL: - rc = -EFAULT; - if (access_ok(VERIFY_READ, argp, sizeof(struct serial_struct))) - rc = gs_setserial(&PortP->gs, argp); - break; - default: - rc = -ENOIOCTLCMD; - break; - } - func_exit(); - return rc; -} - - -/* The throttle/unthrottle scheme for the Specialix card is different - * from other drivers and deserves some explanation. - * The Specialix hardware takes care of XON/XOFF - * and CTS/RTS flow control itself. This means that all we have to - * do when signalled by the upper tty layer to throttle/unthrottle is - * to make a note of it here. When we come to read characters from the - * rx buffers on the card (rio_receive_chars()) we look to see if the - * upper layer can accept more (as noted here in rio_rx_throt[]). - * If it can't we simply don't remove chars from the cards buffer. - * When the tty layer can accept chars, we again note that here and when - * rio_receive_chars() is called it will remove them from the cards buffer. - * The card will notice that a ports buffer has drained below some low - * water mark and will unflow control the line itself, using whatever - * flow control scheme is in use for that port. -- Simon Allen - */ - -static void rio_throttle(struct tty_struct *tty) -{ - struct Port *port = (struct Port *) tty->driver_data; - - func_enter(); - /* If the port is using any type of input flow - * control then throttle the port. - */ - - if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) { - port->State |= RIO_THROTTLE_RX; - } - - func_exit(); -} - - -static void rio_unthrottle(struct tty_struct *tty) -{ - struct Port *port = (struct Port *) tty->driver_data; - - func_enter(); - /* Always unthrottle even if flow control is not enabled on - * this port in case we disabled flow control while the port - * was throttled - */ - - port->State &= ~RIO_THROTTLE_RX; - - func_exit(); - return; -} - - - - - -/* ********************************************************************** * - * Here are the initialization routines. * - * ********************************************************************** */ - - -static struct vpd_prom *get_VPD_PROM(struct Host *hp) -{ - static struct vpd_prom vpdp; - char *p; - int i; - - func_enter(); - rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM); - - p = (char *) &vpdp; - for (i = 0; i < sizeof(struct vpd_prom); i++) - *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2); - /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */ - - /* Terminate the identifier string. - *** requires one extra byte in struct vpd_prom *** */ - *p++ = 0; - - if (rio_debug & RIO_DEBUG_PROBE) - my_hd((char *) &vpdp, 0x20); - - func_exit(); - - return &vpdp; -} - -static const struct tty_operations rio_ops = { - .open = riotopen, - .close = gs_close, - .write = gs_write, - .put_char = gs_put_char, - .flush_chars = gs_flush_chars, - .write_room = gs_write_room, - .chars_in_buffer = gs_chars_in_buffer, - .flush_buffer = gs_flush_buffer, - .ioctl = rio_ioctl, - .throttle = rio_throttle, - .unthrottle = rio_unthrottle, - .set_termios = gs_set_termios, - .stop = gs_stop, - .start = gs_start, - .hangup = gs_hangup, -}; - -static int rio_init_drivers(void) -{ - int error = -ENOMEM; - - rio_driver = alloc_tty_driver(256); - if (!rio_driver) - goto out; - rio_driver2 = alloc_tty_driver(256); - if (!rio_driver2) - goto out1; - - func_enter(); - - rio_driver->owner = THIS_MODULE; - rio_driver->driver_name = "specialix_rio"; - rio_driver->name = "ttySR"; - rio_driver->major = RIO_NORMAL_MAJOR0; - rio_driver->type = TTY_DRIVER_TYPE_SERIAL; - rio_driver->subtype = SERIAL_TYPE_NORMAL; - rio_driver->init_termios = tty_std_termios; - rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - rio_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(rio_driver, &rio_ops); - - rio_driver2->owner = THIS_MODULE; - rio_driver2->driver_name = "specialix_rio"; - rio_driver2->name = "ttySR"; - rio_driver2->major = RIO_NORMAL_MAJOR1; - rio_driver2->type = TTY_DRIVER_TYPE_SERIAL; - rio_driver2->subtype = SERIAL_TYPE_NORMAL; - rio_driver2->init_termios = tty_std_termios; - rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - rio_driver2->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(rio_driver2, &rio_ops); - - rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios); - - if ((error = tty_register_driver(rio_driver))) - goto out2; - if ((error = tty_register_driver(rio_driver2))) - goto out3; - func_exit(); - return 0; - out3: - tty_unregister_driver(rio_driver); - out2: - put_tty_driver(rio_driver2); - out1: - put_tty_driver(rio_driver); - out: - printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error); - return 1; -} - -static const struct tty_port_operations rio_port_ops = { - .carrier_raised = rio_carrier_raised, -}; - -static int rio_init_datastructures(void) -{ - int i; - struct Port *port; - func_enter(); - - /* Many drivers statically allocate the maximum number of ports - There is no reason not to allocate them dynamically. Is there? -- REW */ - /* However, the RIO driver allows users to configure their first - RTA as the ports numbered 504-511. We therefore need to allocate - the whole range. :-( -- REW */ - -#define RI_SZ sizeof(struct rio_info) -#define HOST_SZ sizeof(struct Host) -#define PORT_SZ sizeof(struct Port *) -#define TMIO_SZ sizeof(struct termios *) - rio_dprintk(RIO_DEBUG_INIT, "getting : %Zd %Zd %Zd %Zd %Zd bytes\n", RI_SZ, RIO_HOSTS * HOST_SZ, RIO_PORTS * PORT_SZ, RIO_PORTS * TMIO_SZ, RIO_PORTS * TMIO_SZ); - - if (!(p = kzalloc(RI_SZ, GFP_KERNEL))) - goto free0; - if (!(p->RIOHosts = kzalloc(RIO_HOSTS * HOST_SZ, GFP_KERNEL))) - goto free1; - if (!(p->RIOPortp = kzalloc(RIO_PORTS * PORT_SZ, GFP_KERNEL))) - goto free2; - p->RIOConf = RIOConf; - rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp); - -#if 1 - for (i = 0; i < RIO_PORTS; i++) { - port = p->RIOPortp[i] = kzalloc(sizeof(struct Port), GFP_KERNEL); - if (!port) { - goto free6; - } - rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped); - tty_port_init(&port->gs.port); - port->gs.port.ops = &rio_port_ops; - port->PortNum = i; - port->gs.magic = RIO_MAGIC; - port->gs.close_delay = HZ / 2; - port->gs.closing_wait = 30 * HZ; - port->gs.rd = &rio_real_driver; - spin_lock_init(&port->portSem); - } -#else - /* We could postpone initializing them to when they are configured. */ -#endif - - - - if (rio_debug & RIO_DEBUG_INIT) { - my_hd(&rio_real_driver, sizeof(rio_real_driver)); - } - - - func_exit(); - return 0; - - free6:for (i--; i >= 0; i--) - kfree(p->RIOPortp[i]); -/*free5: - free4: - free3:*/ kfree(p->RIOPortp); - free2:kfree(p->RIOHosts); - free1: - rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp); - kfree(p); - free0: - return -ENOMEM; -} - -static void __exit rio_release_drivers(void) -{ - func_enter(); - tty_unregister_driver(rio_driver2); - tty_unregister_driver(rio_driver); - put_tty_driver(rio_driver2); - put_tty_driver(rio_driver); - func_exit(); -} - - -#ifdef CONFIG_PCI - /* This was written for SX, but applies to RIO too... - (including bugs....) - - There is another bit besides Bit 17. Turning that bit off - (on boards shipped with the fix in the eeprom) results in a - hang on the next access to the card. - */ - - /******************************************************** - * Setting bit 17 in the CNTRL register of the PLX 9050 * - * chip forces a retry on writes while a read is pending.* - * This is to prevent the card locking up on Intel Xeon * - * multiprocessor systems with the NX chipset. -- NV * - ********************************************************/ - -/* Newer cards are produced with this bit set from the configuration - EEprom. As the bit is read/write for the CPU, we can fix it here, - if we detect that it isn't set correctly. -- REW */ - -static void fix_rio_pci(struct pci_dev *pdev) -{ - unsigned long hwbase; - unsigned char __iomem *rebase; - unsigned int t; - -#define CNTRL_REG_OFFSET 0x50 -#define CNTRL_REG_GOODVALUE 0x18260000 - - hwbase = pci_resource_start(pdev, 0); - rebase = ioremap(hwbase, 0x80); - t = readl(rebase + CNTRL_REG_OFFSET); - if (t != CNTRL_REG_GOODVALUE) { - printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE); - writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); - } - iounmap(rebase); -} -#endif - - -static int __init rio_init(void) -{ - int found = 0; - int i; - struct Host *hp; - int retval; - struct vpd_prom *vpdp; - int okboard; - -#ifdef CONFIG_PCI - struct pci_dev *pdev = NULL; - unsigned short tshort; -#endif - - func_enter(); - rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug); - - if (abs((long) (&rio_debug) - rio_debug) < 0x10000) { - printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug); - rio_debug = -1; - } - - if (misc_register(&rio_fw_device) < 0) { - printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n"); - return -EIO; - } - - retval = rio_init_datastructures(); - if (retval < 0) { - misc_deregister(&rio_fw_device); - return retval; - } -#ifdef CONFIG_PCI - /* First look for the JET devices: */ - while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) { - u32 tint; - - if (pci_enable_device(pdev)) - continue; - - /* Specialix has a whole bunch of cards with - 0x2000 as the device ID. They say its because - the standard requires it. Stupid standard. */ - /* It seems that reading a word doesn't work reliably on 2.0. - Also, reading a non-aligned dword doesn't work. So we read the - whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID) - ourselves */ - pci_read_config_dword(pdev, 0x2c, &tint); - tshort = (tint >> 16) & 0xffff; - rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint); - if (tshort != 0x0100) { - rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort); - continue; - } - rio_dprintk(RIO_DEBUG_PROBE, "cp1\n"); - - hp = &p->RIOHosts[p->RIONumHosts]; - hp->PaddrP = pci_resource_start(pdev, 2); - hp->Ivec = pdev->irq; - if (((1 << hp->Ivec) & rio_irqmask) == 0) - hp->Ivec = 0; - hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); - hp->CardP = (struct DpRam __iomem *) hp->Caddr; - hp->Type = RIO_PCI; - hp->Copy = rio_copy_to_card; - hp->Mode = RIO_PCI_BOOT_FROM_RAM; - spin_lock_init(&hp->HostLock); - rio_reset_interrupt(hp); - rio_start_card_running(hp); - - rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); - if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) { - rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n"); - writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); - p->RIOHosts[p->RIONumHosts].UniqueNum = - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); - rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); - - fix_rio_pci(pdev); - - p->RIOHosts[p->RIONumHosts].pdev = pdev; - pci_dev_get(pdev); - - p->RIOLastPCISearch = 0; - p->RIONumHosts++; - found++; - } else { - iounmap(p->RIOHosts[p->RIONumHosts].Caddr); - p->RIOHosts[p->RIONumHosts].Caddr = NULL; - } - } - - /* Then look for the older PCI card.... : */ - - /* These older PCI cards have problems (only byte-mode access is - supported), which makes them a bit awkward to support. - They also have problems sharing interrupts. Be careful. - (The driver now refuses to share interrupts for these - cards. This should be sufficient). - */ - - /* Then look for the older RIO/PCI devices: */ - while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_RIO, pdev))) { - if (pci_enable_device(pdev)) - continue; - -#ifdef CONFIG_RIO_OLDPCI - hp = &p->RIOHosts[p->RIONumHosts]; - hp->PaddrP = pci_resource_start(pdev, 0); - hp->Ivec = pdev->irq; - if (((1 << hp->Ivec) & rio_irqmask) == 0) - hp->Ivec = 0; - hp->Ivec |= 0x8000; /* Mark as non-sharable */ - hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); - hp->CardP = (struct DpRam __iomem *) hp->Caddr; - hp->Type = RIO_PCI; - hp->Copy = rio_copy_to_card; - hp->Mode = RIO_PCI_BOOT_FROM_RAM; - spin_lock_init(&hp->HostLock); - - rio_dprintk(RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec); - rio_dprintk(RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode); - - rio_reset_interrupt(hp); - rio_start_card_running(hp); - rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); - if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) { - writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); - p->RIOHosts[p->RIONumHosts].UniqueNum = - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); - rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); - - p->RIOHosts[p->RIONumHosts].pdev = pdev; - pci_dev_get(pdev); - - p->RIOLastPCISearch = 0; - p->RIONumHosts++; - found++; - } else { - iounmap(p->RIOHosts[p->RIONumHosts].Caddr); - p->RIOHosts[p->RIONumHosts].Caddr = NULL; - } -#else - printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n"); -#endif - } -#endif /* PCI */ - - /* Now probe for ISA cards... */ - for (i = 0; i < NR_RIO_ADDRS; i++) { - hp = &p->RIOHosts[p->RIONumHosts]; - hp->PaddrP = rio_probe_addrs[i]; - /* There was something about the IRQs of these cards. 'Forget what.--REW */ - hp->Ivec = 0; - hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); - hp->CardP = (struct DpRam __iomem *) hp->Caddr; - hp->Type = RIO_AT; - hp->Copy = rio_copy_to_card; /* AT card PCI???? - PVDL - * -- YES! this is now a normal copy. Only the - * old PCI card uses the special PCI copy. - * Moreover, the ISA card will work with the - * special PCI copy anyway. -- REW */ - hp->Mode = 0; - spin_lock_init(&hp->HostLock); - - vpdp = get_VPD_PROM(hp); - rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n"); - okboard = 0; - if ((strncmp(vpdp->identifier, RIO_ISA_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA2_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA3_IDENT, 16) == 0)) { - /* Board is present... */ - if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == 0) { - /* ... and feeling fine!!!! */ - rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); - if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) { - rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum); - okboard++; - found++; - } - } - - if (!okboard) { - iounmap(hp->Caddr); - hp->Caddr = NULL; - } - } - } - - - for (i = 0; i < p->RIONumHosts; i++) { - hp = &p->RIOHosts[i]; - if (hp->Ivec) { - int mode = IRQF_SHARED; - if (hp->Ivec & 0x8000) { - mode = 0; - hp->Ivec &= 0x7fff; - } - rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode); - retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp); - rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval); - if (retval) { - printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec); - hp->Ivec = 0; - } - rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec); - if (hp->Ivec != 0) { - rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n"); - hp->Mode |= RIO_PCI_INT_ENABLE; - } else - hp->Mode &= ~RIO_PCI_INT_ENABLE; - rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode); - rio_start_card_running(hp); - } - /* Init the timer "always" to make sure that it can safely be - deleted when we unload... */ - - setup_timer(&hp->timer, rio_pollfunc, i); - if (!hp->Ivec) { - rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll); - mod_timer(&hp->timer, jiffies + rio_poll); - } - } - - if (found) { - rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found); - rio_init_drivers(); - } else { - /* deregister the misc device we created earlier */ - misc_deregister(&rio_fw_device); - } - - func_exit(); - return found ? 0 : -EIO; -} - - -static void __exit rio_exit(void) -{ - int i; - struct Host *hp; - - func_enter(); - - for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) { - RIOHostReset(hp->Type, hp->CardP, hp->Slot); - if (hp->Ivec) { - free_irq(hp->Ivec, hp); - rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec); - } - /* It is safe/allowed to del_timer a non-active timer */ - del_timer_sync(&hp->timer); - if (hp->Caddr) - iounmap(hp->Caddr); - if (hp->Type == RIO_PCI) - pci_dev_put(hp->pdev); - } - - if (misc_deregister(&rio_fw_device) < 0) { - printk(KERN_INFO "rio: couldn't deregister control-device\n"); - } - - - rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n"); - - rio_release_drivers(); - - /* Release dynamically allocated memory */ - kfree(p->RIOPortp); - kfree(p->RIOHosts); - kfree(p); - - func_exit(); -} - -module_init(rio_init); -module_exit(rio_exit); diff --git a/drivers/char/rio/rio_linux.h b/drivers/char/rio/rio_linux.h deleted file mode 100644 index 7f26cd7c815e..000000000000 --- a/drivers/char/rio/rio_linux.h +++ /dev/null @@ -1,197 +0,0 @@ - -/* - * rio_linux.h - * - * Copyright (C) 1998,1999,2000 R.E.Wolff@BitWizard.nl - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * RIO serial driver. - * - * Version 1.0 -- July, 1999. - * - */ - -#define RIO_NBOARDS 4 -#define RIO_PORTSPERBOARD 128 -#define RIO_NPORTS (RIO_NBOARDS * RIO_PORTSPERBOARD) - -#define MODEM_SUPPORT - -#ifdef __KERNEL__ - -#define RIO_MAGIC 0x12345678 - - -struct vpd_prom { - unsigned short id; - char hwrev; - char hwass; - int uniqid; - char myear; - char mweek; - char hw_feature[5]; - char oem_id; - char identifier[16]; -}; - - -#define RIO_DEBUG_ALL 0xffffffff - -#define O_OTHER(tty) \ - ((O_OLCUC(tty)) ||\ - (O_ONLCR(tty)) ||\ - (O_OCRNL(tty)) ||\ - (O_ONOCR(tty)) ||\ - (O_ONLRET(tty)) ||\ - (O_OFILL(tty)) ||\ - (O_OFDEL(tty)) ||\ - (O_NLDLY(tty)) ||\ - (O_CRDLY(tty)) ||\ - (O_TABDLY(tty)) ||\ - (O_BSDLY(tty)) ||\ - (O_VTDLY(tty)) ||\ - (O_FFDLY(tty))) - -/* Same for input. */ -#define I_OTHER(tty) \ - ((I_INLCR(tty)) ||\ - (I_IGNCR(tty)) ||\ - (I_ICRNL(tty)) ||\ - (I_IUCLC(tty)) ||\ - (L_ISIG(tty))) - - -#endif /* __KERNEL__ */ - - -#define RIO_BOARD_INTR_LOCK 1 - - -#ifndef RIOCTL_MISC_MINOR -/* Allow others to gather this into "major.h" or something like that */ -#define RIOCTL_MISC_MINOR 169 -#endif - - -/* Allow us to debug "in the field" without requiring clients to - recompile.... */ -#if 1 -#define rio_spin_lock_irqsave(sem, flags) do { \ - rio_dprintk (RIO_DEBUG_SPINLOCK, "spinlockirqsave: %p %s:%d\n", \ - sem, __FILE__, __LINE__);\ - spin_lock_irqsave(sem, flags);\ - } while (0) - -#define rio_spin_unlock_irqrestore(sem, flags) do { \ - rio_dprintk (RIO_DEBUG_SPINLOCK, "spinunlockirqrestore: %p %s:%d\n",\ - sem, __FILE__, __LINE__);\ - spin_unlock_irqrestore(sem, flags);\ - } while (0) - -#define rio_spin_lock(sem) do { \ - rio_dprintk (RIO_DEBUG_SPINLOCK, "spinlock: %p %s:%d\n",\ - sem, __FILE__, __LINE__);\ - spin_lock(sem);\ - } while (0) - -#define rio_spin_unlock(sem) do { \ - rio_dprintk (RIO_DEBUG_SPINLOCK, "spinunlock: %p %s:%d\n",\ - sem, __FILE__, __LINE__);\ - spin_unlock(sem);\ - } while (0) -#else -#define rio_spin_lock_irqsave(sem, flags) \ - spin_lock_irqsave(sem, flags) - -#define rio_spin_unlock_irqrestore(sem, flags) \ - spin_unlock_irqrestore(sem, flags) - -#define rio_spin_lock(sem) \ - spin_lock(sem) - -#define rio_spin_unlock(sem) \ - spin_unlock(sem) - -#endif - - - -#ifdef CONFIG_RIO_OLDPCI -static inline void __iomem *rio_memcpy_toio(void __iomem *dummy, void __iomem *dest, void *source, int n) -{ - char __iomem *dst = dest; - char *src = source; - - while (n--) { - writeb(*src++, dst++); - (void) readb(dummy); - } - - return dest; -} - -static inline void __iomem *rio_copy_toio(void __iomem *dest, void *source, int n) -{ - char __iomem *dst = dest; - char *src = source; - - while (n--) - writeb(*src++, dst++); - - return dest; -} - - -static inline void *rio_memcpy_fromio(void *dest, void __iomem *source, int n) -{ - char *dst = dest; - char __iomem *src = source; - - while (n--) - *dst++ = readb(src++); - - return dest; -} - -#else -#define rio_memcpy_toio(dummy,dest,source,n) memcpy_toio(dest, source, n) -#define rio_copy_toio memcpy_toio -#define rio_memcpy_fromio memcpy_fromio -#endif - -#define DEBUG 1 - - -/* - This driver can spew a whole lot of debugging output at you. If you - need maximum performance, you should disable the DEBUG define. To - aid in debugging in the field, I'm leaving the compile-time debug - features enabled, and disable them "runtime". That allows me to - instruct people with problems to enable debugging without requiring - them to recompile... -*/ - -#ifdef DEBUG -#define rio_dprintk(f, str...) do { if (rio_debug & f) printk (str);} while (0) -#define func_enter() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s\n", __func__) -#define func_exit() rio_dprintk (RIO_DEBUG_FLOW, "rio: exit %s\n", __func__) -#define func_enter2() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s (port %d)\n",__func__, port->line) -#else -#define rio_dprintk(f, str...) /* nothing */ -#define func_enter() -#define func_exit() -#define func_enter2() -#endif diff --git a/drivers/char/rio/rioboard.h b/drivers/char/rio/rioboard.h deleted file mode 100644 index 252230043c82..000000000000 --- a/drivers/char/rio/rioboard.h +++ /dev/null @@ -1,275 +0,0 @@ -/************************************************************************/ -/* */ -/* Title : RIO Host Card Hardware Definitions */ -/* */ -/* Author : N.P.Vassallo */ -/* */ -/* Creation : 26th April 1999 */ -/* */ -/* Version : 1.0.0 */ -/* */ -/* Copyright : (c) Specialix International Ltd. 1999 * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * */ -/* Description : Prototypes, structures and definitions */ -/* describing the RIO board hardware */ -/* */ -/************************************************************************/ - -#ifndef _rioboard_h /* If RIOBOARD.H not already defined */ -#define _rioboard_h 1 - -/***************************************************************************** -*********************** *********************** -*********************** Hardware Control Registers *********************** -*********************** *********************** -*****************************************************************************/ - -/* Hardware Registers... */ - -#define RIO_REG_BASE 0x7C00 /* Base of control registers */ - -#define RIO_CONFIG RIO_REG_BASE + 0x0000 /* WRITE: Configuration Register */ -#define RIO_INTSET RIO_REG_BASE + 0x0080 /* WRITE: Interrupt Set */ -#define RIO_RESET RIO_REG_BASE + 0x0100 /* WRITE: Host Reset */ -#define RIO_INTRESET RIO_REG_BASE + 0x0180 /* WRITE: Interrupt Reset */ - -#define RIO_VPD_ROM RIO_REG_BASE + 0x0000 /* READ: Vital Product Data ROM */ -#define RIO_INTSTAT RIO_REG_BASE + 0x0080 /* READ: Interrupt Status (Jet boards only) */ -#define RIO_RESETSTAT RIO_REG_BASE + 0x0100 /* READ: Reset Status (Jet boards only) */ - -/* RIO_VPD_ROM definitions... */ -#define VPD_SLX_ID1 0x00 /* READ: Specialix Identifier #1 */ -#define VPD_SLX_ID2 0x01 /* READ: Specialix Identifier #2 */ -#define VPD_HW_REV 0x02 /* READ: Hardware Revision */ -#define VPD_HW_ASSEM 0x03 /* READ: Hardware Assembly Level */ -#define VPD_UNIQUEID4 0x04 /* READ: Unique Identifier #4 */ -#define VPD_UNIQUEID3 0x05 /* READ: Unique Identifier #3 */ -#define VPD_UNIQUEID2 0x06 /* READ: Unique Identifier #2 */ -#define VPD_UNIQUEID1 0x07 /* READ: Unique Identifier #1 */ -#define VPD_MANU_YEAR 0x08 /* READ: Year Of Manufacture (0 = 1970) */ -#define VPD_MANU_WEEK 0x09 /* READ: Week Of Manufacture (0 = week 1 Jan) */ -#define VPD_HWFEATURE1 0x0A /* READ: Hardware Feature Byte 1 */ -#define VPD_HWFEATURE2 0x0B /* READ: Hardware Feature Byte 2 */ -#define VPD_HWFEATURE3 0x0C /* READ: Hardware Feature Byte 3 */ -#define VPD_HWFEATURE4 0x0D /* READ: Hardware Feature Byte 4 */ -#define VPD_HWFEATURE5 0x0E /* READ: Hardware Feature Byte 5 */ -#define VPD_OEMID 0x0F /* READ: OEM Identifier */ -#define VPD_IDENT 0x10 /* READ: Identifier string (16 bytes) */ -#define VPD_IDENT_LEN 0x10 - -/* VPD ROM Definitions... */ -#define SLX_ID1 0x4D -#define SLX_ID2 0x98 - -#define PRODUCT_ID(a) ((a>>4)&0xF) /* Use to obtain Product ID from VPD_UNIQUEID1 */ - -#define ID_SX_ISA 0x2 -#define ID_RIO_EISA 0x3 -#define ID_SX_PCI 0x5 -#define ID_SX_EISA 0x7 -#define ID_RIO_RTA16 0x9 -#define ID_RIO_ISA 0xA -#define ID_RIO_MCA 0xB -#define ID_RIO_SBUS 0xC -#define ID_RIO_PCI 0xD -#define ID_RIO_RTA8 0xE - -/* Transputer bootstrap definitions... */ - -#define BOOTLOADADDR (0x8000 - 6) -#define BOOTINDICATE (0x8000 - 2) - -/* Firmware load position... */ - -#define FIRMWARELOADADDR 0x7C00 /* Firmware is loaded _before_ this address */ - -/***************************************************************************** -***************************** ***************************** -***************************** RIO (Rev1) ISA ***************************** -***************************** ***************************** -*****************************************************************************/ - -/* Control Register Definitions... */ -#define RIO_ISA_IDENT "JBJGPGGHINSMJPJR" - -#define RIO_ISA_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ -#define RIO_ISA_CFG_BUSENABLE 0x02 /* Enable processor bus */ -#define RIO_ISA_CFG_IRQMASK 0x30 /* Interrupt mask */ -#define RIO_ISA_CFG_IRQ12 0x10 /* Interrupt Level 12 */ -#define RIO_ISA_CFG_IRQ11 0x20 /* Interrupt Level 11 */ -#define RIO_ISA_CFG_IRQ9 0x30 /* Interrupt Level 9 */ -#define RIO_ISA_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ -#define RIO_ISA_CFG_WAITSTATE0 0x80 /* 0 waitstates, else 1 */ - -/***************************************************************************** -***************************** ***************************** -***************************** RIO (Rev2) ISA ***************************** -***************************** ***************************** -*****************************************************************************/ - -/* Control Register Definitions... */ -#define RIO_ISA2_IDENT "JBJGPGGHINSMJPJR" - -#define RIO_ISA2_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ -#define RIO_ISA2_CFG_BUSENABLE 0x02 /* Enable processor bus */ -#define RIO_ISA2_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ -#define RIO_ISA2_CFG_16BIT 0x08 /* 16bit mode, else 8bit */ -#define RIO_ISA2_CFG_IRQMASK 0x30 /* Interrupt mask */ -#define RIO_ISA2_CFG_IRQ15 0x00 /* Interrupt Level 15 */ -#define RIO_ISA2_CFG_IRQ12 0x10 /* Interrupt Level 12 */ -#define RIO_ISA2_CFG_IRQ11 0x20 /* Interrupt Level 11 */ -#define RIO_ISA2_CFG_IRQ9 0x30 /* Interrupt Level 9 */ -#define RIO_ISA2_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ -#define RIO_ISA2_CFG_WAITSTATE0 0x80 /* 0 waitstates, else 1 */ - -/***************************************************************************** -***************************** ****************************** -***************************** RIO (Jet) ISA ****************************** -***************************** ****************************** -*****************************************************************************/ - -/* Control Register Definitions... */ -#define RIO_ISA3_IDENT "JET HOST BY KEV#" - -#define RIO_ISA3_CFG_BUSENABLE 0x02 /* Enable processor bus */ -#define RIO_ISA3_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ -#define RIO_ISA32_CFG_IRQMASK 0xF30 /* Interrupt mask */ -#define RIO_ISA3_CFG_IRQ15 0xF0 /* Interrupt Level 15 */ -#define RIO_ISA3_CFG_IRQ12 0xC0 /* Interrupt Level 12 */ -#define RIO_ISA3_CFG_IRQ11 0xB0 /* Interrupt Level 11 */ -#define RIO_ISA3_CFG_IRQ10 0xA0 /* Interrupt Level 10 */ -#define RIO_ISA3_CFG_IRQ9 0x90 /* Interrupt Level 9 */ - -/***************************************************************************** -********************************* ******************************** -********************************* RIO MCA ******************************** -********************************* ******************************** -*****************************************************************************/ - -/* Control Register Definitions... */ -#define RIO_MCA_IDENT "JBJGPGGHINSMJPJR" - -#define RIO_MCA_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ -#define RIO_MCA_CFG_BUSENABLE 0x02 /* Enable processor bus */ -#define RIO_MCA_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ - -/***************************************************************************** -******************************** ******************************** -******************************** RIO EISA ******************************** -******************************** ******************************** -*****************************************************************************/ - -/* EISA Configuration Space Definitions... */ -#define EISA_PRODUCT_ID1 0xC80 -#define EISA_PRODUCT_ID2 0xC81 -#define EISA_PRODUCT_NUMBER 0xC82 -#define EISA_REVISION_NUMBER 0xC83 -#define EISA_CARD_ENABLE 0xC84 -#define EISA_VPD_UNIQUEID4 0xC88 /* READ: Unique Identifier #4 */ -#define EISA_VPD_UNIQUEID3 0xC8A /* READ: Unique Identifier #3 */ -#define EISA_VPD_UNIQUEID2 0xC90 /* READ: Unique Identifier #2 */ -#define EISA_VPD_UNIQUEID1 0xC92 /* READ: Unique Identifier #1 */ -#define EISA_VPD_MANU_YEAR 0xC98 /* READ: Year Of Manufacture (0 = 1970) */ -#define EISA_VPD_MANU_WEEK 0xC9A /* READ: Week Of Manufacture (0 = week 1 Jan) */ -#define EISA_MEM_ADDR_23_16 0xC00 -#define EISA_MEM_ADDR_31_24 0xC01 -#define EISA_RIO_CONFIG 0xC02 /* WRITE: Configuration Register */ -#define EISA_RIO_INTSET 0xC03 /* WRITE: Interrupt Set */ -#define EISA_RIO_INTRESET 0xC03 /* READ: Interrupt Reset */ - -/* Control Register Definitions... */ -#define RIO_EISA_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ -#define RIO_EISA_CFG_LINK20 0x02 /* 20Mbps link, else 10Mbps */ -#define RIO_EISA_CFG_BUSENABLE 0x04 /* Enable processor bus */ -#define RIO_EISA_CFG_PROCRUN 0x08 /* Processor running, else reset */ -#define RIO_EISA_CFG_IRQMASK 0xF0 /* Interrupt mask */ -#define RIO_EISA_CFG_IRQ15 0xF0 /* Interrupt Level 15 */ -#define RIO_EISA_CFG_IRQ14 0xE0 /* Interrupt Level 14 */ -#define RIO_EISA_CFG_IRQ12 0xC0 /* Interrupt Level 12 */ -#define RIO_EISA_CFG_IRQ11 0xB0 /* Interrupt Level 11 */ -#define RIO_EISA_CFG_IRQ10 0xA0 /* Interrupt Level 10 */ -#define RIO_EISA_CFG_IRQ9 0x90 /* Interrupt Level 9 */ -#define RIO_EISA_CFG_IRQ7 0x70 /* Interrupt Level 7 */ -#define RIO_EISA_CFG_IRQ6 0x60 /* Interrupt Level 6 */ -#define RIO_EISA_CFG_IRQ5 0x50 /* Interrupt Level 5 */ -#define RIO_EISA_CFG_IRQ4 0x40 /* Interrupt Level 4 */ -#define RIO_EISA_CFG_IRQ3 0x30 /* Interrupt Level 3 */ - -/***************************************************************************** -******************************** ******************************** -******************************** RIO SBus ******************************** -******************************** ******************************** -*****************************************************************************/ - -/* Control Register Definitions... */ -#define RIO_SBUS_IDENT "JBPGK#\0\0\0\0\0\0\0\0\0\0" - -#define RIO_SBUS_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ -#define RIO_SBUS_CFG_BUSENABLE 0x02 /* Enable processor bus */ -#define RIO_SBUS_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ -#define RIO_SBUS_CFG_IRQMASK 0x38 /* Interrupt mask */ -#define RIO_SBUS_CFG_IRQNONE 0x00 /* No Interrupt */ -#define RIO_SBUS_CFG_IRQ7 0x38 /* Interrupt Level 7 */ -#define RIO_SBUS_CFG_IRQ6 0x30 /* Interrupt Level 6 */ -#define RIO_SBUS_CFG_IRQ5 0x28 /* Interrupt Level 5 */ -#define RIO_SBUS_CFG_IRQ4 0x20 /* Interrupt Level 4 */ -#define RIO_SBUS_CFG_IRQ3 0x18 /* Interrupt Level 3 */ -#define RIO_SBUS_CFG_IRQ2 0x10 /* Interrupt Level 2 */ -#define RIO_SBUS_CFG_IRQ1 0x08 /* Interrupt Level 1 */ -#define RIO_SBUS_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ -#define RIO_SBUS_CFG_PROC25 0x80 /* 25Mhz processor clock, else 20Mhz */ - -/***************************************************************************** -********************************* ******************************** -********************************* RIO PCI ******************************** -********************************* ******************************** -*****************************************************************************/ - -/* Control Register Definitions... */ -#define RIO_PCI_IDENT "ECDDPGJGJHJRGSK#" - -#define RIO_PCI_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ -#define RIO_PCI_CFG_BUSENABLE 0x02 /* Enable processor bus */ -#define RIO_PCI_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ -#define RIO_PCI_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ -#define RIO_PCI_CFG_PROC25 0x80 /* 25Mhz processor clock, else 20Mhz */ - -/* PCI Definitions... */ -#define SPX_VENDOR_ID 0x11CB /* Assigned by the PCI SIG */ -#define SPX_DEVICE_ID 0x8000 /* RIO bridge boards */ -#define SPX_PLXDEVICE_ID 0x2000 /* PLX bridge boards */ -#define SPX_SUB_VENDOR_ID SPX_VENDOR_ID /* Same as vendor id */ -#define RIO_SUB_SYS_ID 0x0800 /* RIO PCI board */ - -/***************************************************************************** -***************************** ****************************** -***************************** RIO (Jet) PCI ****************************** -***************************** ****************************** -*****************************************************************************/ - -/* Control Register Definitions... */ -#define RIO_PCI2_IDENT "JET HOST BY KEV#" - -#define RIO_PCI2_CFG_BUSENABLE 0x02 /* Enable processor bus */ -#define RIO_PCI2_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ - -/* PCI Definitions... */ -#define RIO2_SUB_SYS_ID 0x0100 /* RIO (Jet) PCI board */ - -#endif /*_rioboard_h */ - -/* End of RIOBOARD.H */ diff --git a/drivers/char/rio/rioboot.c b/drivers/char/rio/rioboot.c deleted file mode 100644 index d956dd316005..000000000000 --- a/drivers/char/rio/rioboot.c +++ /dev/null @@ -1,1113 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rioboot.c -** SID : 1.3 -** Last Modified : 11/6/98 10:33:36 -** Retrieved : 11/6/98 10:33:48 -** -** ident @(#)rioboot.c 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" - -static int RIOBootComplete(struct rio_info *p, struct Host *HostP, unsigned int Rup, struct PktCmd __iomem *PktCmdP); - -static const unsigned char RIOAtVec2Ctrl[] = { - /* 0 */ INTERRUPT_DISABLE, - /* 1 */ INTERRUPT_DISABLE, - /* 2 */ INTERRUPT_DISABLE, - /* 3 */ INTERRUPT_DISABLE, - /* 4 */ INTERRUPT_DISABLE, - /* 5 */ INTERRUPT_DISABLE, - /* 6 */ INTERRUPT_DISABLE, - /* 7 */ INTERRUPT_DISABLE, - /* 8 */ INTERRUPT_DISABLE, - /* 9 */ IRQ_9 | INTERRUPT_ENABLE, - /* 10 */ INTERRUPT_DISABLE, - /* 11 */ IRQ_11 | INTERRUPT_ENABLE, - /* 12 */ IRQ_12 | INTERRUPT_ENABLE, - /* 13 */ INTERRUPT_DISABLE, - /* 14 */ INTERRUPT_DISABLE, - /* 15 */ IRQ_15 | INTERRUPT_ENABLE -}; - -/** - * RIOBootCodeRTA - Load RTA boot code - * @p: RIO to load - * @rbp: Download descriptor - * - * Called when the user process initiates booting of the card firmware. - * Lads the firmware - */ - -int RIOBootCodeRTA(struct rio_info *p, struct DownLoad * rbp) -{ - int offset; - - func_enter(); - - rio_dprintk(RIO_DEBUG_BOOT, "Data at user address %p\n", rbp->DataP); - - /* - ** Check that we have set asside enough memory for this - */ - if (rbp->Count > SIXTY_FOUR_K) { - rio_dprintk(RIO_DEBUG_BOOT, "RTA Boot Code Too Large!\n"); - p->RIOError.Error = HOST_FILE_TOO_LARGE; - func_exit(); - return -ENOMEM; - } - - if (p->RIOBooting) { - rio_dprintk(RIO_DEBUG_BOOT, "RTA Boot Code : BUSY BUSY BUSY!\n"); - p->RIOError.Error = BOOT_IN_PROGRESS; - func_exit(); - return -EBUSY; - } - - /* - ** The data we load in must end on a (RTA_BOOT_DATA_SIZE) byte boundary, - ** so calculate how far we have to move the data up the buffer - ** to achieve this. - */ - offset = (RTA_BOOT_DATA_SIZE - (rbp->Count % RTA_BOOT_DATA_SIZE)) % RTA_BOOT_DATA_SIZE; - - /* - ** Be clean, and clear the 'unused' portion of the boot buffer, - ** because it will (eventually) be part of the Rta run time environment - ** and so should be zeroed. - */ - memset(p->RIOBootPackets, 0, offset); - - /* - ** Copy the data from user space into the array - */ - - if (copy_from_user(((u8 *)p->RIOBootPackets) + offset, rbp->DataP, rbp->Count)) { - rio_dprintk(RIO_DEBUG_BOOT, "Bad data copy from user space\n"); - p->RIOError.Error = COPYIN_FAILED; - func_exit(); - return -EFAULT; - } - - /* - ** Make sure that our copy of the size includes that offset we discussed - ** earlier. - */ - p->RIONumBootPkts = (rbp->Count + offset) / RTA_BOOT_DATA_SIZE; - p->RIOBootCount = rbp->Count; - - func_exit(); - return 0; -} - -/** - * rio_start_card_running - host card start - * @HostP: The RIO to kick off - * - * Start a RIO processor unit running. Encapsulates the knowledge - * of the card type. - */ - -void rio_start_card_running(struct Host *HostP) -{ - switch (HostP->Type) { - case RIO_AT: - rio_dprintk(RIO_DEBUG_BOOT, "Start ISA card running\n"); - writeb(BOOT_FROM_RAM | EXTERNAL_BUS_ON | HostP->Mode | RIOAtVec2Ctrl[HostP->Ivec & 0xF], &HostP->Control); - break; - case RIO_PCI: - /* - ** PCI is much the same as MCA. Everything is once again memory - ** mapped, so we are writing to memory registers instead of io - ** ports. - */ - rio_dprintk(RIO_DEBUG_BOOT, "Start PCI card running\n"); - writeb(PCITpBootFromRam | PCITpBusEnable | HostP->Mode, &HostP->Control); - break; - default: - rio_dprintk(RIO_DEBUG_BOOT, "Unknown host type %d\n", HostP->Type); - break; - } - return; -} - -/* -** Load in the host boot code - load it directly onto all halted hosts -** of the correct type. -** -** Put your rubber pants on before messing with this code - even the magic -** numbers have trouble understanding what they are doing here. -*/ - -int RIOBootCodeHOST(struct rio_info *p, struct DownLoad *rbp) -{ - struct Host *HostP; - u8 __iomem *Cad; - PARM_MAP __iomem *ParmMapP; - int RupN; - int PortN; - unsigned int host; - u8 __iomem *StartP; - u8 __iomem *DestP; - int wait_count; - u16 OldParmMap; - u16 offset; /* It is very important that this is a u16 */ - u8 *DownCode = NULL; - unsigned long flags; - - HostP = NULL; /* Assure the compiler we've initialized it */ - - - /* Walk the hosts */ - for (host = 0; host < p->RIONumHosts; host++) { - rio_dprintk(RIO_DEBUG_BOOT, "Attempt to boot host %d\n", host); - HostP = &p->RIOHosts[host]; - - rio_dprintk(RIO_DEBUG_BOOT, "Host Type = 0x%x, Mode = 0x%x, IVec = 0x%x\n", HostP->Type, HostP->Mode, HostP->Ivec); - - /* Don't boot hosts already running */ - if ((HostP->Flags & RUN_STATE) != RC_WAITING) { - rio_dprintk(RIO_DEBUG_BOOT, "%s %d already running\n", "Host", host); - continue; - } - - /* - ** Grab a pointer to the card (ioremapped) - */ - Cad = HostP->Caddr; - - /* - ** We are going to (try) and load in rbp->Count bytes. - ** The last byte will reside at p->RIOConf.HostLoadBase-1; - ** Therefore, we need to start copying at address - ** (caddr+p->RIOConf.HostLoadBase-rbp->Count) - */ - StartP = &Cad[p->RIOConf.HostLoadBase - rbp->Count]; - - rio_dprintk(RIO_DEBUG_BOOT, "kernel virtual address for host is %p\n", Cad); - rio_dprintk(RIO_DEBUG_BOOT, "kernel virtual address for download is %p\n", StartP); - rio_dprintk(RIO_DEBUG_BOOT, "host loadbase is 0x%x\n", p->RIOConf.HostLoadBase); - rio_dprintk(RIO_DEBUG_BOOT, "size of download is 0x%x\n", rbp->Count); - - /* Make sure it fits */ - if (p->RIOConf.HostLoadBase < rbp->Count) { - rio_dprintk(RIO_DEBUG_BOOT, "Bin too large\n"); - p->RIOError.Error = HOST_FILE_TOO_LARGE; - func_exit(); - return -EFBIG; - } - /* - ** Ensure that the host really is stopped. - ** Disable it's external bus & twang its reset line. - */ - RIOHostReset(HostP->Type, HostP->CardP, HostP->Slot); - - /* - ** Copy the data directly from user space to the SRAM. - ** This ain't going to be none too clever if the download - ** code is bigger than this segment. - */ - rio_dprintk(RIO_DEBUG_BOOT, "Copy in code\n"); - - /* Buffer to local memory as we want to use I/O space and - some cards only do 8 or 16 bit I/O */ - - DownCode = vmalloc(rbp->Count); - if (!DownCode) { - p->RIOError.Error = NOT_ENOUGH_CORE_FOR_PCI_COPY; - func_exit(); - return -ENOMEM; - } - if (copy_from_user(DownCode, rbp->DataP, rbp->Count)) { - kfree(DownCode); - p->RIOError.Error = COPYIN_FAILED; - func_exit(); - return -EFAULT; - } - HostP->Copy(DownCode, StartP, rbp->Count); - vfree(DownCode); - - rio_dprintk(RIO_DEBUG_BOOT, "Copy completed\n"); - - /* - ** S T O P ! - ** - ** Upto this point the code has been fairly rational, and possibly - ** even straight forward. What follows is a pile of crud that will - ** magically turn into six bytes of transputer assembler. Normally - ** you would expect an array or something, but, being me, I have - ** chosen [been told] to use a technique whereby the startup code - ** will be correct if we change the loadbase for the code. Which - ** brings us onto another issue - the loadbase is the *end* of the - ** code, not the start. - ** - ** If I were you I wouldn't start from here. - */ - - /* - ** We now need to insert a short boot section into - ** the memory at the end of Sram2. This is normally (de)composed - ** of the last eight bytes of the download code. The - ** download has been assembled/compiled to expect to be - ** loaded from 0x7FFF downwards. We have loaded it - ** at some other address. The startup code goes into the small - ** ram window at Sram2, in the last 8 bytes, which are really - ** at addresses 0x7FF8-0x7FFF. - ** - ** If the loadbase is, say, 0x7C00, then we need to branch to - ** address 0x7BFE to run the host.bin startup code. We assemble - ** this jump manually. - ** - ** The two byte sequence 60 08 is loaded into memory at address - ** 0x7FFE,F. This is a local branch to location 0x7FF8 (60 is nfix 0, - ** which adds '0' to the .O register, complements .O, and then shifts - ** it left by 4 bit positions, 08 is a jump .O+8 instruction. This will - ** add 8 to .O (which was 0xFFF0), and will branch RELATIVE to the new - ** location. Now, the branch starts from the value of .PC (or .IP or - ** whatever the bloody register is called on this chip), and the .PC - ** will be pointing to the location AFTER the branch, in this case - ** .PC == 0x8000, so the branch will be to 0x8000+0xFFF8 = 0x7FF8. - ** - ** A long branch is coded at 0x7FF8. This consists of loading a four - ** byte offset into .O using nfix (as above) and pfix operators. The - ** pfix operates in exactly the same way as the nfix operator, but - ** without the complement operation. The offset, of course, must be - ** relative to the address of the byte AFTER the branch instruction, - ** which will be (urm) 0x7FFC, so, our final destination of the branch - ** (loadbase-2), has to be reached from here. Imagine that the loadbase - ** is 0x7C00 (which it is), then we will need to branch to 0x7BFE (which - ** is the first byte of the initial two byte short local branch of the - ** download code). - ** - ** To code a jump from 0x7FFC (which is where the branch will start - ** from) to 0x7BFE, we will need to branch 0xFC02 bytes (0x7FFC+0xFC02)= - ** 0x7BFE. - ** This will be coded as four bytes: - ** 60 2C 20 02 - ** being nfix .O+0 - ** pfix .O+C - ** pfix .O+0 - ** jump .O+2 - ** - ** The nfix operator is used, so that the startup code will be - ** compatible with the whole Tp family. (lies, damn lies, it'll never - ** work in a month of Sundays). - ** - ** The nfix nyble is the 1s complement of the nyble value you - ** want to load - in this case we wanted 'F' so we nfix loaded '0'. - */ - - - /* - ** Dest points to the top 8 bytes of Sram2. The Tp jumps - ** to 0x7FFE at reset time, and starts executing. This is - ** a short branch to 0x7FF8, where a long branch is coded. - */ - - DestP = &Cad[0x7FF8]; /* <<<---- READ THE ABOVE COMMENTS */ - -#define NFIX(N) (0x60 | (N)) /* .O = (~(.O + N))<<4 */ -#define PFIX(N) (0x20 | (N)) /* .O = (.O + N)<<4 */ -#define JUMP(N) (0x00 | (N)) /* .PC = .PC + .O */ - - /* - ** 0x7FFC is the address of the location following the last byte of - ** the four byte jump instruction. - ** READ THE ABOVE COMMENTS - ** - ** offset is (TO-FROM) % MEMSIZE, but with compound buggering about. - ** Memsize is 64K for this range of Tp, so offset is a short (unsigned, - ** cos I don't understand 2's complement). - */ - offset = (p->RIOConf.HostLoadBase - 2) - 0x7FFC; - - writeb(NFIX(((unsigned short) (~offset) >> (unsigned short) 12) & 0xF), DestP); - writeb(PFIX((offset >> 8) & 0xF), DestP + 1); - writeb(PFIX((offset >> 4) & 0xF), DestP + 2); - writeb(JUMP(offset & 0xF), DestP + 3); - - writeb(NFIX(0), DestP + 6); - writeb(JUMP(8), DestP + 7); - - rio_dprintk(RIO_DEBUG_BOOT, "host loadbase is 0x%x\n", p->RIOConf.HostLoadBase); - rio_dprintk(RIO_DEBUG_BOOT, "startup offset is 0x%x\n", offset); - - /* - ** Flag what is going on - */ - HostP->Flags &= ~RUN_STATE; - HostP->Flags |= RC_STARTUP; - - /* - ** Grab a copy of the current ParmMap pointer, so we - ** can tell when it has changed. - */ - OldParmMap = readw(&HostP->__ParmMapR); - - rio_dprintk(RIO_DEBUG_BOOT, "Original parmmap is 0x%x\n", OldParmMap); - - /* - ** And start it running (I hope). - ** As there is nothing dodgy or obscure about the - ** above code, this is guaranteed to work every time. - */ - rio_dprintk(RIO_DEBUG_BOOT, "Host Type = 0x%x, Mode = 0x%x, IVec = 0x%x\n", HostP->Type, HostP->Mode, HostP->Ivec); - - rio_start_card_running(HostP); - - rio_dprintk(RIO_DEBUG_BOOT, "Set control port\n"); - - /* - ** Now, wait for upto five seconds for the Tp to setup the parmmap - ** pointer: - */ - for (wait_count = 0; (wait_count < p->RIOConf.StartupTime) && (readw(&HostP->__ParmMapR) == OldParmMap); wait_count++) { - rio_dprintk(RIO_DEBUG_BOOT, "Checkout %d, 0x%x\n", wait_count, readw(&HostP->__ParmMapR)); - mdelay(100); - - } - - /* - ** If the parmmap pointer is unchanged, then the host code - ** has crashed & burned in a really spectacular way - */ - if (readw(&HostP->__ParmMapR) == OldParmMap) { - rio_dprintk(RIO_DEBUG_BOOT, "parmmap 0x%x\n", readw(&HostP->__ParmMapR)); - rio_dprintk(RIO_DEBUG_BOOT, "RIO Mesg Run Fail\n"); - HostP->Flags &= ~RUN_STATE; - HostP->Flags |= RC_STUFFED; - RIOHostReset( HostP->Type, HostP->CardP, HostP->Slot ); - continue; - } - - rio_dprintk(RIO_DEBUG_BOOT, "Running 0x%x\n", readw(&HostP->__ParmMapR)); - - /* - ** Well, the board thought it was OK, and setup its parmmap - ** pointer. For the time being, we will pretend that this - ** board is running, and check out what the error flag says. - */ - - /* - ** Grab a 32 bit pointer to the parmmap structure - */ - ParmMapP = (PARM_MAP __iomem *) RIO_PTR(Cad, readw(&HostP->__ParmMapR)); - rio_dprintk(RIO_DEBUG_BOOT, "ParmMapP : %p\n", ParmMapP); - ParmMapP = (PARM_MAP __iomem *)(Cad + readw(&HostP->__ParmMapR)); - rio_dprintk(RIO_DEBUG_BOOT, "ParmMapP : %p\n", ParmMapP); - - /* - ** The links entry should be 0xFFFF; we set it up - ** with a mask to say how many PHBs to use, and - ** which links to use. - */ - if (readw(&ParmMapP->links) != 0xFFFF) { - rio_dprintk(RIO_DEBUG_BOOT, "RIO Mesg Run Fail %s\n", HostP->Name); - rio_dprintk(RIO_DEBUG_BOOT, "Links = 0x%x\n", readw(&ParmMapP->links)); - HostP->Flags &= ~RUN_STATE; - HostP->Flags |= RC_STUFFED; - RIOHostReset( HostP->Type, HostP->CardP, HostP->Slot ); - continue; - } - - writew(RIO_LINK_ENABLE, &ParmMapP->links); - - /* - ** now wait for the card to set all the parmmap->XXX stuff - ** this is a wait of upto two seconds.... - */ - rio_dprintk(RIO_DEBUG_BOOT, "Looking for init_done - %d ticks\n", p->RIOConf.StartupTime); - HostP->timeout_id = 0; - for (wait_count = 0; (wait_count < p->RIOConf.StartupTime) && !readw(&ParmMapP->init_done); wait_count++) { - rio_dprintk(RIO_DEBUG_BOOT, "Waiting for init_done\n"); - mdelay(100); - } - rio_dprintk(RIO_DEBUG_BOOT, "OK! init_done!\n"); - - if (readw(&ParmMapP->error) != E_NO_ERROR || !readw(&ParmMapP->init_done)) { - rio_dprintk(RIO_DEBUG_BOOT, "RIO Mesg Run Fail %s\n", HostP->Name); - rio_dprintk(RIO_DEBUG_BOOT, "Timedout waiting for init_done\n"); - HostP->Flags &= ~RUN_STATE; - HostP->Flags |= RC_STUFFED; - RIOHostReset( HostP->Type, HostP->CardP, HostP->Slot ); - continue; - } - - rio_dprintk(RIO_DEBUG_BOOT, "Got init_done\n"); - - /* - ** It runs! It runs! - */ - rio_dprintk(RIO_DEBUG_BOOT, "Host ID %x Running\n", HostP->UniqueNum); - - /* - ** set the time period between interrupts. - */ - writew(p->RIOConf.Timer, &ParmMapP->timer); - - /* - ** Translate all the 16 bit pointers in the __ParmMapR into - ** 32 bit pointers for the driver in ioremap space. - */ - HostP->ParmMapP = ParmMapP; - HostP->PhbP = (struct PHB __iomem *) RIO_PTR(Cad, readw(&ParmMapP->phb_ptr)); - HostP->RupP = (struct RUP __iomem *) RIO_PTR(Cad, readw(&ParmMapP->rups)); - HostP->PhbNumP = (unsigned short __iomem *) RIO_PTR(Cad, readw(&ParmMapP->phb_num_ptr)); - HostP->LinkStrP = (struct LPB __iomem *) RIO_PTR(Cad, readw(&ParmMapP->link_str_ptr)); - - /* - ** point the UnixRups at the real Rups - */ - for (RupN = 0; RupN < MAX_RUP; RupN++) { - HostP->UnixRups[RupN].RupP = &HostP->RupP[RupN]; - HostP->UnixRups[RupN].Id = RupN + 1; - HostP->UnixRups[RupN].BaseSysPort = NO_PORT; - spin_lock_init(&HostP->UnixRups[RupN].RupLock); - } - - for (RupN = 0; RupN < LINKS_PER_UNIT; RupN++) { - HostP->UnixRups[RupN + MAX_RUP].RupP = &HostP->LinkStrP[RupN].rup; - HostP->UnixRups[RupN + MAX_RUP].Id = 0; - HostP->UnixRups[RupN + MAX_RUP].BaseSysPort = NO_PORT; - spin_lock_init(&HostP->UnixRups[RupN + MAX_RUP].RupLock); - } - - /* - ** point the PortP->Phbs at the real Phbs - */ - for (PortN = p->RIOFirstPortsMapped; PortN < p->RIOLastPortsMapped + PORTS_PER_RTA; PortN++) { - if (p->RIOPortp[PortN]->HostP == HostP) { - struct Port *PortP = p->RIOPortp[PortN]; - struct PHB __iomem *PhbP; - /* int oldspl; */ - - if (!PortP->Mapped) - continue; - - PhbP = &HostP->PhbP[PortP->HostPort]; - rio_spin_lock_irqsave(&PortP->portSem, flags); - - PortP->PhbP = PhbP; - - PortP->TxAdd = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->tx_add)); - PortP->TxStart = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->tx_start)); - PortP->TxEnd = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->tx_end)); - PortP->RxRemove = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->rx_remove)); - PortP->RxStart = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->rx_start)); - PortP->RxEnd = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->rx_end)); - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - /* - ** point the UnixRup at the base SysPort - */ - if (!(PortN % PORTS_PER_RTA)) - HostP->UnixRups[PortP->RupNum].BaseSysPort = PortN; - } - } - - rio_dprintk(RIO_DEBUG_BOOT, "Set the card running... \n"); - /* - ** last thing - show the world that everything is in place - */ - HostP->Flags &= ~RUN_STATE; - HostP->Flags |= RC_RUNNING; - } - /* - ** MPX always uses a poller. This is actually patched into the system - ** configuration and called directly from each clock tick. - ** - */ - p->RIOPolling = 1; - - p->RIOSystemUp++; - - rio_dprintk(RIO_DEBUG_BOOT, "Done everything %x\n", HostP->Ivec); - func_exit(); - return 0; -} - - - -/** - * RIOBootRup - Boot an RTA - * @p: rio we are working with - * @Rup: Rup number - * @HostP: host object - * @PacketP: packet to use - * - * If we have successfully processed this boot, then - * return 1. If we havent, then return 0. - */ - -int RIOBootRup(struct rio_info *p, unsigned int Rup, struct Host *HostP, struct PKT __iomem *PacketP) -{ - struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *) PacketP->data; - struct PktCmd_M *PktReplyP; - struct CmdBlk *CmdBlkP; - unsigned int sequence; - - /* - ** If we haven't been told what to boot, we can't boot it. - */ - if (p->RIONumBootPkts == 0) { - rio_dprintk(RIO_DEBUG_BOOT, "No RTA code to download yet\n"); - return 0; - } - - /* - ** Special case of boot completed - if we get one of these then we - ** don't need a command block. For all other cases we do, so handle - ** this first and then get a command block, then handle every other - ** case, relinquishing the command block if disaster strikes! - */ - if ((readb(&PacketP->len) & PKT_CMD_BIT) && (readb(&PktCmdP->Command) == BOOT_COMPLETED)) - return RIOBootComplete(p, HostP, Rup, PktCmdP); - - /* - ** Try to allocate a command block. This is in kernel space - */ - if (!(CmdBlkP = RIOGetCmdBlk())) { - rio_dprintk(RIO_DEBUG_BOOT, "No command blocks to boot RTA! come back later.\n"); - return 0; - } - - /* - ** Fill in the default info on the command block - */ - CmdBlkP->Packet.dest_unit = Rup < (unsigned short) MAX_RUP ? Rup : 0; - CmdBlkP->Packet.dest_port = BOOT_RUP; - CmdBlkP->Packet.src_unit = 0; - CmdBlkP->Packet.src_port = BOOT_RUP; - - CmdBlkP->PreFuncP = CmdBlkP->PostFuncP = NULL; - PktReplyP = (struct PktCmd_M *) CmdBlkP->Packet.data; - - /* - ** process COMMANDS on the boot rup! - */ - if (readb(&PacketP->len) & PKT_CMD_BIT) { - /* - ** We only expect one type of command - a BOOT_REQUEST! - */ - if (readb(&PktCmdP->Command) != BOOT_REQUEST) { - rio_dprintk(RIO_DEBUG_BOOT, "Unexpected command %d on BOOT RUP %d of host %Zd\n", readb(&PktCmdP->Command), Rup, HostP - p->RIOHosts); - RIOFreeCmdBlk(CmdBlkP); - return 1; - } - - /* - ** Build a Boot Sequence command block - ** - ** We no longer need to use "Boot Mode", we'll always allow - ** boot requests - the boot will not complete if the device - ** appears in the bindings table. - ** - ** We'll just (always) set the command field in packet reply - ** to allow an attempted boot sequence : - */ - PktReplyP->Command = BOOT_SEQUENCE; - - PktReplyP->BootSequence.NumPackets = p->RIONumBootPkts; - PktReplyP->BootSequence.LoadBase = p->RIOConf.RtaLoadBase; - PktReplyP->BootSequence.CodeSize = p->RIOBootCount; - - CmdBlkP->Packet.len = BOOT_SEQUENCE_LEN | PKT_CMD_BIT; - - memcpy((void *) &CmdBlkP->Packet.data[BOOT_SEQUENCE_LEN], "BOOT", 4); - - rio_dprintk(RIO_DEBUG_BOOT, "Boot RTA on Host %Zd Rup %d - %d (0x%x) packets to 0x%x\n", HostP - p->RIOHosts, Rup, p->RIONumBootPkts, p->RIONumBootPkts, p->RIOConf.RtaLoadBase); - - /* - ** If this host is in slave mode, send the RTA an invalid boot - ** sequence command block to force it to kill the boot. We wait - ** for half a second before sending this packet to prevent the RTA - ** attempting to boot too often. The master host should then grab - ** the RTA and make it its own. - */ - p->RIOBooting++; - RIOQueueCmdBlk(HostP, Rup, CmdBlkP); - return 1; - } - - /* - ** It is a request for boot data. - */ - sequence = readw(&PktCmdP->Sequence); - - rio_dprintk(RIO_DEBUG_BOOT, "Boot block %d on Host %Zd Rup%d\n", sequence, HostP - p->RIOHosts, Rup); - - if (sequence >= p->RIONumBootPkts) { - rio_dprintk(RIO_DEBUG_BOOT, "Got a request for packet %d, max is %d\n", sequence, p->RIONumBootPkts); - } - - PktReplyP->Sequence = sequence; - memcpy(PktReplyP->BootData, p->RIOBootPackets[p->RIONumBootPkts - sequence - 1], RTA_BOOT_DATA_SIZE); - CmdBlkP->Packet.len = PKT_MAX_DATA_LEN; - RIOQueueCmdBlk(HostP, Rup, CmdBlkP); - return 1; -} - -/** - * RIOBootComplete - RTA boot is done - * @p: RIO we are working with - * @HostP: Host structure - * @Rup: RUP being used - * @PktCmdP: Packet command that was used - * - * This function is called when an RTA been booted. - * If booted by a host, HostP->HostUniqueNum is the booting host. - * If booted by an RTA, HostP->Mapping[Rup].RtaUniqueNum is the booting RTA. - * RtaUniq is the booted RTA. - */ - -static int RIOBootComplete(struct rio_info *p, struct Host *HostP, unsigned int Rup, struct PktCmd __iomem *PktCmdP) -{ - struct Map *MapP = NULL; - struct Map *MapP2 = NULL; - int Flag; - int found; - int host, rta; - int EmptySlot = -1; - int entry, entry2; - char *MyType, *MyName; - unsigned int MyLink; - unsigned short RtaType; - u32 RtaUniq = (readb(&PktCmdP->UniqNum[0])) + (readb(&PktCmdP->UniqNum[1]) << 8) + (readb(&PktCmdP->UniqNum[2]) << 16) + (readb(&PktCmdP->UniqNum[3]) << 24); - - p->RIOBooting = 0; - - rio_dprintk(RIO_DEBUG_BOOT, "RTA Boot completed - BootInProgress now %d\n", p->RIOBooting); - - /* - ** Determine type of unit (16/8 port RTA). - */ - - RtaType = GetUnitType(RtaUniq); - if (Rup >= (unsigned short) MAX_RUP) - rio_dprintk(RIO_DEBUG_BOOT, "RIO: Host %s has booted an RTA(%d) on link %c\n", HostP->Name, 8 * RtaType, readb(&PktCmdP->LinkNum) + 'A'); - else - rio_dprintk(RIO_DEBUG_BOOT, "RIO: RTA %s has booted an RTA(%d) on link %c\n", HostP->Mapping[Rup].Name, 8 * RtaType, readb(&PktCmdP->LinkNum) + 'A'); - - rio_dprintk(RIO_DEBUG_BOOT, "UniqNum is 0x%x\n", RtaUniq); - - if (RtaUniq == 0x00000000 || RtaUniq == 0xffffffff) { - rio_dprintk(RIO_DEBUG_BOOT, "Illegal RTA Uniq Number\n"); - return 1; - } - - /* - ** If this RTA has just booted an RTA which doesn't belong to this - ** system, or the system is in slave mode, do not attempt to create - ** a new table entry for it. - */ - - if (!RIOBootOk(p, HostP, RtaUniq)) { - MyLink = readb(&PktCmdP->LinkNum); - if (Rup < (unsigned short) MAX_RUP) { - /* - ** RtaUniq was clone booted (by this RTA). Instruct this RTA - ** to hold off further attempts to boot on this link for 30 - ** seconds. - */ - if (RIOSuspendBootRta(HostP, HostP->Mapping[Rup].ID, MyLink)) { - rio_dprintk(RIO_DEBUG_BOOT, "RTA failed to suspend booting on link %c\n", 'A' + MyLink); - } - } else - /* - ** RtaUniq was booted by this host. Set the booting link - ** to hold off for 30 seconds to give another unit a - ** chance to boot it. - */ - writew(30, &HostP->LinkStrP[MyLink].WaitNoBoot); - rio_dprintk(RIO_DEBUG_BOOT, "RTA %x not owned - suspend booting down link %c on unit %x\n", RtaUniq, 'A' + MyLink, HostP->Mapping[Rup].RtaUniqueNum); - return 1; - } - - /* - ** Check for a SLOT_IN_USE entry for this RTA attached to the - ** current host card in the driver table. - ** - ** If it exists, make a note that we have booted it. Other parts of - ** the driver are interested in this information at a later date, - ** in particular when the booting RTA asks for an ID for this unit, - ** we must have set the BOOTED flag, and the NEWBOOT flag is used - ** to force an open on any ports that where previously open on this - ** unit. - */ - for (entry = 0; entry < MAX_RUP; entry++) { - unsigned int sysport; - - if ((HostP->Mapping[entry].Flags & SLOT_IN_USE) && (HostP->Mapping[entry].RtaUniqueNum == RtaUniq)) { - HostP->Mapping[entry].Flags |= RTA_BOOTED | RTA_NEWBOOT; - if ((sysport = HostP->Mapping[entry].SysPort) != NO_PORT) { - if (sysport < p->RIOFirstPortsBooted) - p->RIOFirstPortsBooted = sysport; - if (sysport > p->RIOLastPortsBooted) - p->RIOLastPortsBooted = sysport; - /* - ** For a 16 port RTA, check the second bank of 8 ports - */ - if (RtaType == TYPE_RTA16) { - entry2 = HostP->Mapping[entry].ID2 - 1; - HostP->Mapping[entry2].Flags |= RTA_BOOTED | RTA_NEWBOOT; - sysport = HostP->Mapping[entry2].SysPort; - if (sysport < p->RIOFirstPortsBooted) - p->RIOFirstPortsBooted = sysport; - if (sysport > p->RIOLastPortsBooted) - p->RIOLastPortsBooted = sysport; - } - } - if (RtaType == TYPE_RTA16) - rio_dprintk(RIO_DEBUG_BOOT, "RTA will be given IDs %d+%d\n", entry + 1, entry2 + 1); - else - rio_dprintk(RIO_DEBUG_BOOT, "RTA will be given ID %d\n", entry + 1); - return 1; - } - } - - rio_dprintk(RIO_DEBUG_BOOT, "RTA not configured for this host\n"); - - if (Rup >= (unsigned short) MAX_RUP) { - /* - ** It was a host that did the booting - */ - MyType = "Host"; - MyName = HostP->Name; - } else { - /* - ** It was an RTA that did the booting - */ - MyType = "RTA"; - MyName = HostP->Mapping[Rup].Name; - } - MyLink = readb(&PktCmdP->LinkNum); - - /* - ** There is no SLOT_IN_USE entry for this RTA attached to the current - ** host card in the driver table. - ** - ** Check for a SLOT_TENTATIVE entry for this RTA attached to the - ** current host card in the driver table. - ** - ** If we find one, then we re-use that slot. - */ - for (entry = 0; entry < MAX_RUP; entry++) { - if ((HostP->Mapping[entry].Flags & SLOT_TENTATIVE) && (HostP->Mapping[entry].RtaUniqueNum == RtaUniq)) { - if (RtaType == TYPE_RTA16) { - entry2 = HostP->Mapping[entry].ID2 - 1; - if ((HostP->Mapping[entry2].Flags & SLOT_TENTATIVE) && (HostP->Mapping[entry2].RtaUniqueNum == RtaUniq)) - rio_dprintk(RIO_DEBUG_BOOT, "Found previous tentative slots (%d+%d)\n", entry, entry2); - else - continue; - } else - rio_dprintk(RIO_DEBUG_BOOT, "Found previous tentative slot (%d)\n", entry); - if (!p->RIONoMessage) - printk("RTA connected to %s '%s' (%c) not configured.\n", MyType, MyName, MyLink + 'A'); - return 1; - } - } - - /* - ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA - ** attached to the current host card in the driver table. - ** - ** Check if there is a SLOT_IN_USE or SLOT_TENTATIVE entry on another - ** host for this RTA in the driver table. - ** - ** For a SLOT_IN_USE entry on another host, we need to delete the RTA - ** entry from the other host and add it to this host (using some of - ** the functions from table.c which do this). - ** For a SLOT_TENTATIVE entry on another host, we must cope with the - ** following scenario: - ** - ** + Plug 8 port RTA into host A. (This creates SLOT_TENTATIVE entry - ** in table) - ** + Unplug RTA and plug into host B. (We now have 2 SLOT_TENTATIVE - ** entries) - ** + Configure RTA on host B. (This slot now becomes SLOT_IN_USE) - ** + Unplug RTA and plug back into host A. - ** + Configure RTA on host A. We now have the same RTA configured - ** with different ports on two different hosts. - */ - rio_dprintk(RIO_DEBUG_BOOT, "Have we seen RTA %x before?\n", RtaUniq); - found = 0; - Flag = 0; /* Convince the compiler this variable is initialized */ - for (host = 0; !found && (host < p->RIONumHosts); host++) { - for (rta = 0; rta < MAX_RUP; rta++) { - if ((p->RIOHosts[host].Mapping[rta].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) && (p->RIOHosts[host].Mapping[rta].RtaUniqueNum == RtaUniq)) { - Flag = p->RIOHosts[host].Mapping[rta].Flags; - MapP = &p->RIOHosts[host].Mapping[rta]; - if (RtaType == TYPE_RTA16) { - MapP2 = &p->RIOHosts[host].Mapping[MapP->ID2 - 1]; - rio_dprintk(RIO_DEBUG_BOOT, "This RTA is units %d+%d from host %s\n", rta + 1, MapP->ID2, p->RIOHosts[host].Name); - } else - rio_dprintk(RIO_DEBUG_BOOT, "This RTA is unit %d from host %s\n", rta + 1, p->RIOHosts[host].Name); - found = 1; - break; - } - } - } - - /* - ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA - ** attached to the current host card in the driver table. - ** - ** If we have not found a SLOT_IN_USE or SLOT_TENTATIVE entry on - ** another host for this RTA in the driver table... - ** - ** Check for a SLOT_IN_USE entry for this RTA in the config table. - */ - if (!MapP) { - rio_dprintk(RIO_DEBUG_BOOT, "Look for RTA %x in RIOSavedTable\n", RtaUniq); - for (rta = 0; rta < TOTAL_MAP_ENTRIES; rta++) { - rio_dprintk(RIO_DEBUG_BOOT, "Check table entry %d (%x)", rta, p->RIOSavedTable[rta].RtaUniqueNum); - - if ((p->RIOSavedTable[rta].Flags & SLOT_IN_USE) && (p->RIOSavedTable[rta].RtaUniqueNum == RtaUniq)) { - MapP = &p->RIOSavedTable[rta]; - Flag = p->RIOSavedTable[rta].Flags; - if (RtaType == TYPE_RTA16) { - for (entry2 = rta + 1; entry2 < TOTAL_MAP_ENTRIES; entry2++) { - if (p->RIOSavedTable[entry2].RtaUniqueNum == RtaUniq) - break; - } - MapP2 = &p->RIOSavedTable[entry2]; - rio_dprintk(RIO_DEBUG_BOOT, "This RTA is from table entries %d+%d\n", rta, entry2); - } else - rio_dprintk(RIO_DEBUG_BOOT, "This RTA is from table entry %d\n", rta); - break; - } - } - } - - /* - ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA - ** attached to the current host card in the driver table. - ** - ** We may have found a SLOT_IN_USE entry on another host for this - ** RTA in the config table, or a SLOT_IN_USE or SLOT_TENTATIVE entry - ** on another host for this RTA in the driver table. - ** - ** Check the driver table for room to fit this newly discovered RTA. - ** RIOFindFreeID() first looks for free slots and if it does not - ** find any free slots it will then attempt to oust any - ** tentative entry in the table. - */ - EmptySlot = 1; - if (RtaType == TYPE_RTA16) { - if (RIOFindFreeID(p, HostP, &entry, &entry2) == 0) { - RIODefaultName(p, HostP, entry); - rio_fill_host_slot(entry, entry2, RtaUniq, HostP); - EmptySlot = 0; - } - } else { - if (RIOFindFreeID(p, HostP, &entry, NULL) == 0) { - RIODefaultName(p, HostP, entry); - rio_fill_host_slot(entry, 0, RtaUniq, HostP); - EmptySlot = 0; - } - } - - /* - ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA - ** attached to the current host card in the driver table. - ** - ** If we found a SLOT_IN_USE entry on another host for this - ** RTA in the config or driver table, and there are enough free - ** slots in the driver table, then we need to move it over and - ** delete it from the other host. - ** If we found a SLOT_TENTATIVE entry on another host for this - ** RTA in the driver table, just delete the other host entry. - */ - if (EmptySlot == 0) { - if (MapP) { - if (Flag & SLOT_IN_USE) { - rio_dprintk(RIO_DEBUG_BOOT, "This RTA configured on another host - move entry to current host (1)\n"); - HostP->Mapping[entry].SysPort = MapP->SysPort; - memcpy(HostP->Mapping[entry].Name, MapP->Name, MAX_NAME_LEN); - HostP->Mapping[entry].Flags = SLOT_IN_USE | RTA_BOOTED | RTA_NEWBOOT; - RIOReMapPorts(p, HostP, &HostP->Mapping[entry]); - if (HostP->Mapping[entry].SysPort < p->RIOFirstPortsBooted) - p->RIOFirstPortsBooted = HostP->Mapping[entry].SysPort; - if (HostP->Mapping[entry].SysPort > p->RIOLastPortsBooted) - p->RIOLastPortsBooted = HostP->Mapping[entry].SysPort; - rio_dprintk(RIO_DEBUG_BOOT, "SysPort %d, Name %s\n", (int) MapP->SysPort, MapP->Name); - } else { - rio_dprintk(RIO_DEBUG_BOOT, "This RTA has a tentative entry on another host - delete that entry (1)\n"); - HostP->Mapping[entry].Flags = SLOT_TENTATIVE | RTA_BOOTED | RTA_NEWBOOT; - } - if (RtaType == TYPE_RTA16) { - if (Flag & SLOT_IN_USE) { - HostP->Mapping[entry2].Flags = SLOT_IN_USE | RTA_BOOTED | RTA_NEWBOOT | RTA16_SECOND_SLOT; - HostP->Mapping[entry2].SysPort = MapP2->SysPort; - /* - ** Map second block of ttys for 16 port RTA - */ - RIOReMapPorts(p, HostP, &HostP->Mapping[entry2]); - if (HostP->Mapping[entry2].SysPort < p->RIOFirstPortsBooted) - p->RIOFirstPortsBooted = HostP->Mapping[entry2].SysPort; - if (HostP->Mapping[entry2].SysPort > p->RIOLastPortsBooted) - p->RIOLastPortsBooted = HostP->Mapping[entry2].SysPort; - rio_dprintk(RIO_DEBUG_BOOT, "SysPort %d, Name %s\n", (int) HostP->Mapping[entry2].SysPort, HostP->Mapping[entry].Name); - } else - HostP->Mapping[entry2].Flags = SLOT_TENTATIVE | RTA_BOOTED | RTA_NEWBOOT | RTA16_SECOND_SLOT; - memset(MapP2, 0, sizeof(struct Map)); - } - memset(MapP, 0, sizeof(struct Map)); - if (!p->RIONoMessage) - printk("An orphaned RTA has been adopted by %s '%s' (%c).\n", MyType, MyName, MyLink + 'A'); - } else if (!p->RIONoMessage) - printk("RTA connected to %s '%s' (%c) not configured.\n", MyType, MyName, MyLink + 'A'); - RIOSetChange(p); - return 1; - } - - /* - ** There is no room in the driver table to make an entry for the - ** booted RTA. Keep a note of its Uniq Num in the overflow table, - ** so we can ignore it's ID requests. - */ - if (!p->RIONoMessage) - printk("The RTA connected to %s '%s' (%c) cannot be configured. You cannot configure more than 128 ports to one host card.\n", MyType, MyName, MyLink + 'A'); - for (entry = 0; entry < HostP->NumExtraBooted; entry++) { - if (HostP->ExtraUnits[entry] == RtaUniq) { - /* - ** already got it! - */ - return 1; - } - } - /* - ** If there is room, add the unit to the list of extras - */ - if (HostP->NumExtraBooted < MAX_EXTRA_UNITS) - HostP->ExtraUnits[HostP->NumExtraBooted++] = RtaUniq; - return 1; -} - - -/* -** If the RTA or its host appears in the RIOBindTab[] structure then -** we mustn't boot the RTA and should return 0. -** This operation is slightly different from the other drivers for RIO -** in that this is designed to work with the new utilities -** not config.rio and is FAR SIMPLER. -** We no longer support the RIOBootMode variable. It is all done from the -** "boot/noboot" field in the rio.cf file. -*/ -int RIOBootOk(struct rio_info *p, struct Host *HostP, unsigned long RtaUniq) -{ - int Entry; - unsigned int HostUniq = HostP->UniqueNum; - - /* - ** Search bindings table for RTA or its parent. - ** If it exists, return 0, else 1. - */ - for (Entry = 0; (Entry < MAX_RTA_BINDINGS) && (p->RIOBindTab[Entry] != 0); Entry++) { - if ((p->RIOBindTab[Entry] == HostUniq) || (p->RIOBindTab[Entry] == RtaUniq)) - return 0; - } - return 1; -} - -/* -** Make an empty slot tentative. If this is a 16 port RTA, make both -** slots tentative, and the second one RTA_SECOND_SLOT as well. -*/ - -void rio_fill_host_slot(int entry, int entry2, unsigned int rta_uniq, struct Host *host) -{ - int link; - - rio_dprintk(RIO_DEBUG_BOOT, "rio_fill_host_slot(%d, %d, 0x%x...)\n", entry, entry2, rta_uniq); - - host->Mapping[entry].Flags = (RTA_BOOTED | RTA_NEWBOOT | SLOT_TENTATIVE); - host->Mapping[entry].SysPort = NO_PORT; - host->Mapping[entry].RtaUniqueNum = rta_uniq; - host->Mapping[entry].HostUniqueNum = host->UniqueNum; - host->Mapping[entry].ID = entry + 1; - host->Mapping[entry].ID2 = 0; - if (entry2) { - host->Mapping[entry2].Flags = (RTA_BOOTED | RTA_NEWBOOT | SLOT_TENTATIVE | RTA16_SECOND_SLOT); - host->Mapping[entry2].SysPort = NO_PORT; - host->Mapping[entry2].RtaUniqueNum = rta_uniq; - host->Mapping[entry2].HostUniqueNum = host->UniqueNum; - host->Mapping[entry2].Name[0] = '\0'; - host->Mapping[entry2].ID = entry2 + 1; - host->Mapping[entry2].ID2 = entry + 1; - host->Mapping[entry].ID2 = entry2 + 1; - } - /* - ** Must set these up, so that utilities show - ** topology of 16 port RTAs correctly - */ - for (link = 0; link < LINKS_PER_UNIT; link++) { - host->Mapping[entry].Topology[link].Unit = ROUTE_DISCONNECT; - host->Mapping[entry].Topology[link].Link = NO_LINK; - if (entry2) { - host->Mapping[entry2].Topology[link].Unit = ROUTE_DISCONNECT; - host->Mapping[entry2].Topology[link].Link = NO_LINK; - } - } -} diff --git a/drivers/char/rio/riocmd.c b/drivers/char/rio/riocmd.c deleted file mode 100644 index f121357e5af0..000000000000 --- a/drivers/char/rio/riocmd.c +++ /dev/null @@ -1,939 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** ported from the existing SCO driver source -** - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : riocmd.c -** SID : 1.2 -** Last Modified : 11/6/98 10:33:41 -** Retrieved : 11/6/98 10:33:49 -** -** ident @(#)riocmd.c 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" - - -static struct IdentifyRta IdRta; -static struct KillNeighbour KillUnit; - -int RIOFoadRta(struct Host *HostP, struct Map *MapP) -{ - struct CmdBlk *CmdBlkP; - - rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA\n"); - - CmdBlkP = RIOGetCmdBlk(); - - if (!CmdBlkP) { - rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: GetCmdBlk failed\n"); - return -ENXIO; - } - - CmdBlkP->Packet.dest_unit = MapP->ID; - CmdBlkP->Packet.dest_port = BOOT_RUP; - CmdBlkP->Packet.src_unit = 0; - CmdBlkP->Packet.src_port = BOOT_RUP; - CmdBlkP->Packet.len = 0x84; - CmdBlkP->Packet.data[0] = IFOAD; - CmdBlkP->Packet.data[1] = 0; - CmdBlkP->Packet.data[2] = IFOAD_MAGIC & 0xFF; - CmdBlkP->Packet.data[3] = (IFOAD_MAGIC >> 8) & 0xFF; - - if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: Failed to queue foad command\n"); - return -EIO; - } - return 0; -} - -int RIOZombieRta(struct Host *HostP, struct Map *MapP) -{ - struct CmdBlk *CmdBlkP; - - rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA\n"); - - CmdBlkP = RIOGetCmdBlk(); - - if (!CmdBlkP) { - rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: GetCmdBlk failed\n"); - return -ENXIO; - } - - CmdBlkP->Packet.dest_unit = MapP->ID; - CmdBlkP->Packet.dest_port = BOOT_RUP; - CmdBlkP->Packet.src_unit = 0; - CmdBlkP->Packet.src_port = BOOT_RUP; - CmdBlkP->Packet.len = 0x84; - CmdBlkP->Packet.data[0] = ZOMBIE; - CmdBlkP->Packet.data[1] = 0; - CmdBlkP->Packet.data[2] = ZOMBIE_MAGIC & 0xFF; - CmdBlkP->Packet.data[3] = (ZOMBIE_MAGIC >> 8) & 0xFF; - - if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: Failed to queue zombie command\n"); - return -EIO; - } - return 0; -} - -int RIOCommandRta(struct rio_info *p, unsigned long RtaUnique, int (*func) (struct Host * HostP, struct Map * MapP)) -{ - unsigned int Host; - - rio_dprintk(RIO_DEBUG_CMD, "Command RTA 0x%lx func %p\n", RtaUnique, func); - - if (!RtaUnique) - return (0); - - for (Host = 0; Host < p->RIONumHosts; Host++) { - unsigned int Rta; - struct Host *HostP = &p->RIOHosts[Host]; - - for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { - struct Map *MapP = &HostP->Mapping[Rta]; - - if (MapP->RtaUniqueNum == RtaUnique) { - uint Link; - - /* - ** now, lets just check we have a route to it... - ** IF the routing stuff is working, then one of the - ** topology entries for this unit will have a legit - ** route *somewhere*. We care not where - if its got - ** any connections, we can get to it. - */ - for (Link = 0; Link < LINKS_PER_UNIT; Link++) { - if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { - /* - ** Its worth trying the operation... - */ - return (*func) (HostP, MapP); - } - } - } - } - } - return -ENXIO; -} - - -int RIOIdentifyRta(struct rio_info *p, void __user * arg) -{ - unsigned int Host; - - if (copy_from_user(&IdRta, arg, sizeof(IdRta))) { - rio_dprintk(RIO_DEBUG_CMD, "RIO_IDENTIFY_RTA copy failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - - for (Host = 0; Host < p->RIONumHosts; Host++) { - unsigned int Rta; - struct Host *HostP = &p->RIOHosts[Host]; - - for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { - struct Map *MapP = &HostP->Mapping[Rta]; - - if (MapP->RtaUniqueNum == IdRta.RtaUnique) { - uint Link; - /* - ** now, lets just check we have a route to it... - ** IF the routing stuff is working, then one of the - ** topology entries for this unit will have a legit - ** route *somewhere*. We care not where - if its got - ** any connections, we can get to it. - */ - for (Link = 0; Link < LINKS_PER_UNIT; Link++) { - if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { - /* - ** Its worth trying the operation... - */ - struct CmdBlk *CmdBlkP; - - rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA\n"); - - CmdBlkP = RIOGetCmdBlk(); - - if (!CmdBlkP) { - rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: GetCmdBlk failed\n"); - return -ENXIO; - } - - CmdBlkP->Packet.dest_unit = MapP->ID; - CmdBlkP->Packet.dest_port = BOOT_RUP; - CmdBlkP->Packet.src_unit = 0; - CmdBlkP->Packet.src_port = BOOT_RUP; - CmdBlkP->Packet.len = 0x84; - CmdBlkP->Packet.data[0] = IDENTIFY; - CmdBlkP->Packet.data[1] = 0; - CmdBlkP->Packet.data[2] = IdRta.ID; - - if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: Failed to queue command\n"); - return -EIO; - } - return 0; - } - } - } - } - } - return -ENOENT; -} - - -int RIOKillNeighbour(struct rio_info *p, void __user * arg) -{ - uint Host; - uint ID; - struct Host *HostP; - struct CmdBlk *CmdBlkP; - - rio_dprintk(RIO_DEBUG_CMD, "KILL HOST NEIGHBOUR\n"); - - if (copy_from_user(&KillUnit, arg, sizeof(KillUnit))) { - rio_dprintk(RIO_DEBUG_CMD, "RIO_KILL_NEIGHBOUR copy failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - - if (KillUnit.Link > 3) - return -ENXIO; - - CmdBlkP = RIOGetCmdBlk(); - - if (!CmdBlkP) { - rio_dprintk(RIO_DEBUG_CMD, "UFOAD: GetCmdBlk failed\n"); - return -ENXIO; - } - - CmdBlkP->Packet.dest_unit = 0; - CmdBlkP->Packet.src_unit = 0; - CmdBlkP->Packet.dest_port = BOOT_RUP; - CmdBlkP->Packet.src_port = BOOT_RUP; - CmdBlkP->Packet.len = 0x84; - CmdBlkP->Packet.data[0] = UFOAD; - CmdBlkP->Packet.data[1] = KillUnit.Link; - CmdBlkP->Packet.data[2] = UFOAD_MAGIC & 0xFF; - CmdBlkP->Packet.data[3] = (UFOAD_MAGIC >> 8) & 0xFF; - - for (Host = 0; Host < p->RIONumHosts; Host++) { - ID = 0; - HostP = &p->RIOHosts[Host]; - - if (HostP->UniqueNum == KillUnit.UniqueNum) { - if (RIOQueueCmdBlk(HostP, RTAS_PER_HOST + KillUnit.Link, CmdBlkP) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); - return -EIO; - } - return 0; - } - - for (ID = 0; ID < RTAS_PER_HOST; ID++) { - if (HostP->Mapping[ID].RtaUniqueNum == KillUnit.UniqueNum) { - CmdBlkP->Packet.dest_unit = ID + 1; - if (RIOQueueCmdBlk(HostP, ID, CmdBlkP) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); - return -EIO; - } - return 0; - } - } - } - RIOFreeCmdBlk(CmdBlkP); - return -ENXIO; -} - -int RIOSuspendBootRta(struct Host *HostP, int ID, int Link) -{ - struct CmdBlk *CmdBlkP; - - rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA ID %d, link %c\n", ID, 'A' + Link); - - CmdBlkP = RIOGetCmdBlk(); - - if (!CmdBlkP) { - rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: GetCmdBlk failed\n"); - return -ENXIO; - } - - CmdBlkP->Packet.dest_unit = ID; - CmdBlkP->Packet.dest_port = BOOT_RUP; - CmdBlkP->Packet.src_unit = 0; - CmdBlkP->Packet.src_port = BOOT_RUP; - CmdBlkP->Packet.len = 0x84; - CmdBlkP->Packet.data[0] = IWAIT; - CmdBlkP->Packet.data[1] = Link; - CmdBlkP->Packet.data[2] = IWAIT_MAGIC & 0xFF; - CmdBlkP->Packet.data[3] = (IWAIT_MAGIC >> 8) & 0xFF; - - if (RIOQueueCmdBlk(HostP, ID - 1, CmdBlkP) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: Failed to queue iwait command\n"); - return -EIO; - } - return 0; -} - -int RIOFoadWakeup(struct rio_info *p) -{ - int port; - struct Port *PortP; - unsigned long flags; - - for (port = 0; port < RIO_PORTS; port++) { - PortP = p->RIOPortp[port]; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->Config = 0; - PortP->State = 0; - PortP->InUse = NOT_INUSE; - PortP->PortState = 0; - PortP->FlushCmdBodge = 0; - PortP->ModemLines = 0; - PortP->ModemState = 0; - PortP->CookMode = 0; - PortP->ParamSem = 0; - PortP->Mapped = 0; - PortP->WflushFlag = 0; - PortP->MagicFlags = 0; - PortP->RxDataStart = 0; - PortP->TxBufferIn = 0; - PortP->TxBufferOut = 0; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - } - return (0); -} - -/* -** Incoming command on the COMMAND_RUP to be processed. -*/ -static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struct PKT __iomem *PacketP) -{ - struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *)PacketP->data; - struct Port *PortP; - struct UnixRup *UnixRupP; - unsigned short SysPort; - unsigned short ReportedModemStatus; - unsigned short rup; - unsigned short subCommand; - unsigned long flags; - - func_enter(); - - /* - ** 16 port RTA note: - ** Command rup packets coming from the RTA will have pkt->data[1] (which - ** translates to PktCmdP->PhbNum) set to the host port number for the - ** particular unit. To access the correct BaseSysPort for a 16 port RTA, - ** we can use PhbNum to get the rup number for the appropriate 8 port - ** block (for the first block, this should be equal to 'Rup'). - */ - rup = readb(&PktCmdP->PhbNum) / (unsigned short) PORTS_PER_RTA; - UnixRupP = &HostP->UnixRups[rup]; - SysPort = UnixRupP->BaseSysPort + (readb(&PktCmdP->PhbNum) % (unsigned short) PORTS_PER_RTA); - rio_dprintk(RIO_DEBUG_CMD, "Command on rup %d, port %d\n", rup, SysPort); - - if (UnixRupP->BaseSysPort == NO_PORT) { - rio_dprintk(RIO_DEBUG_CMD, "OBSCURE ERROR!\n"); - rio_dprintk(RIO_DEBUG_CMD, "Diagnostics follow. Please WRITE THESE DOWN and report them to Specialix Technical Support\n"); - rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Host number %Zd, name ``%s''\n", HostP - p->RIOHosts, HostP->Name); - rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Rup number 0x%x\n", rup); - - if (Rup < (unsigned short) MAX_RUP) { - rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for RTA ``%s''\n", HostP->Mapping[Rup].Name); - } else - rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for link ``%c'' of host ``%s''\n", ('A' + Rup - MAX_RUP), HostP->Name); - - rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Destination 0x%x:0x%x\n", readb(&PacketP->dest_unit), readb(&PacketP->dest_port)); - rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Source 0x%x:0x%x\n", readb(&PacketP->src_unit), readb(&PacketP->src_port)); - rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Length 0x%x (%d)\n", readb(&PacketP->len), readb(&PacketP->len)); - rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Control 0x%x (%d)\n", readb(&PacketP->control), readb(&PacketP->control)); - rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Check 0x%x (%d)\n", readw(&PacketP->csum), readw(&PacketP->csum)); - rio_dprintk(RIO_DEBUG_CMD, "COMMAND information: Host Port Number 0x%x, " "Command Code 0x%x\n", readb(&PktCmdP->PhbNum), readb(&PktCmdP->Command)); - return 1; - } - PortP = p->RIOPortp[SysPort]; - rio_spin_lock_irqsave(&PortP->portSem, flags); - switch (readb(&PktCmdP->Command)) { - case RIOC_BREAK_RECEIVED: - rio_dprintk(RIO_DEBUG_CMD, "Received a break!\n"); - /* If the current line disc. is not multi-threading and - the current processor is not the default, reset rup_intr - and return 0 to ensure that the command packet is - not freed. */ - /* Call tmgr HANGUP HERE */ - /* Fix this later when every thing works !!!! RAMRAJ */ - gs_got_break(&PortP->gs); - break; - - case RIOC_COMPLETE: - rio_dprintk(RIO_DEBUG_CMD, "Command complete on phb %d host %Zd\n", readb(&PktCmdP->PhbNum), HostP - p->RIOHosts); - subCommand = 1; - switch (readb(&PktCmdP->SubCommand)) { - case RIOC_MEMDUMP: - rio_dprintk(RIO_DEBUG_CMD, "Memory dump cmd (0x%x) from addr 0x%x\n", readb(&PktCmdP->SubCommand), readw(&PktCmdP->SubAddr)); - break; - case RIOC_READ_REGISTER: - rio_dprintk(RIO_DEBUG_CMD, "Read register (0x%x)\n", readw(&PktCmdP->SubAddr)); - p->CdRegister = (readb(&PktCmdP->ModemStatus) & RIOC_MSVR1_HOST); - break; - default: - subCommand = 0; - break; - } - if (subCommand) - break; - rio_dprintk(RIO_DEBUG_CMD, "New status is 0x%x was 0x%x\n", readb(&PktCmdP->PortStatus), PortP->PortState); - if (PortP->PortState != readb(&PktCmdP->PortStatus)) { - rio_dprintk(RIO_DEBUG_CMD, "Mark status & wakeup\n"); - PortP->PortState = readb(&PktCmdP->PortStatus); - /* What should we do here ... - wakeup( &PortP->PortState ); - */ - } else - rio_dprintk(RIO_DEBUG_CMD, "No change\n"); - - /* FALLTHROUGH */ - case RIOC_MODEM_STATUS: - /* - ** Knock out the tbusy and tstop bits, as these are not relevant - ** to the check for modem status change (they're just there because - ** it's a convenient place to put them!). - */ - ReportedModemStatus = readb(&PktCmdP->ModemStatus); - if ((PortP->ModemState & RIOC_MSVR1_HOST) == - (ReportedModemStatus & RIOC_MSVR1_HOST)) { - rio_dprintk(RIO_DEBUG_CMD, "Modem status unchanged 0x%x\n", PortP->ModemState); - /* - ** Update ModemState just in case tbusy or tstop states have - ** changed. - */ - PortP->ModemState = ReportedModemStatus; - } else { - rio_dprintk(RIO_DEBUG_CMD, "Modem status change from 0x%x to 0x%x\n", PortP->ModemState, ReportedModemStatus); - PortP->ModemState = ReportedModemStatus; -#ifdef MODEM_SUPPORT - if (PortP->Mapped) { - /***********************************************************\ - ************************************************************* - *** *** - *** M O D E M S T A T E C H A N G E *** - *** *** - ************************************************************* - \***********************************************************/ - /* - ** If the device is a modem, then check the modem - ** carrier. - */ - if (PortP->gs.port.tty == NULL) - break; - if (PortP->gs.port.tty->termios == NULL) - break; - - if (!(PortP->gs.port.tty->termios->c_cflag & CLOCAL) && ((PortP->State & (RIO_MOPEN | RIO_WOPEN)))) { - - rio_dprintk(RIO_DEBUG_CMD, "Is there a Carrier?\n"); - /* - ** Is there a carrier? - */ - if (PortP->ModemState & RIOC_MSVR1_CD) { - /* - ** Has carrier just appeared? - */ - if (!(PortP->State & RIO_CARR_ON)) { - rio_dprintk(RIO_DEBUG_CMD, "Carrier just came up.\n"); - PortP->State |= RIO_CARR_ON; - /* - ** wakeup anyone in WOPEN - */ - if (PortP->State & (PORT_ISOPEN | RIO_WOPEN)) - wake_up_interruptible(&PortP->gs.port.open_wait); - } - } else { - /* - ** Has carrier just dropped? - */ - if (PortP->State & RIO_CARR_ON) { - if (PortP->State & (PORT_ISOPEN | RIO_WOPEN | RIO_MOPEN)) - tty_hangup(PortP->gs.port.tty); - PortP->State &= ~RIO_CARR_ON; - rio_dprintk(RIO_DEBUG_CMD, "Carrirer just went down\n"); - } - } - } - } -#endif - } - break; - - default: - rio_dprintk(RIO_DEBUG_CMD, "Unknown command %d on CMD_RUP of host %Zd\n", readb(&PktCmdP->Command), HostP - p->RIOHosts); - break; - } - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - - func_exit(); - - return 1; -} - -/* -** The command mechanism: -** Each rup has a chain of commands associated with it. -** This chain is maintained by routines in this file. -** Periodically we are called and we run a quick check of all the -** active chains to determine if there is a command to be executed, -** and if the rup is ready to accept it. -** -*/ - -/* -** Allocate an empty command block. -*/ -struct CmdBlk *RIOGetCmdBlk(void) -{ - struct CmdBlk *CmdBlkP; - - CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC); - return CmdBlkP; -} - -/* -** Return a block to the head of the free list. -*/ -void RIOFreeCmdBlk(struct CmdBlk *CmdBlkP) -{ - kfree(CmdBlkP); -} - -/* -** attach a command block to the list of commands to be performed for -** a given rup. -*/ -int RIOQueueCmdBlk(struct Host *HostP, uint Rup, struct CmdBlk *CmdBlkP) -{ - struct CmdBlk **Base; - struct UnixRup *UnixRupP; - unsigned long flags; - - if (Rup >= (unsigned short) (MAX_RUP + LINKS_PER_UNIT)) { - rio_dprintk(RIO_DEBUG_CMD, "Illegal rup number %d in RIOQueueCmdBlk\n", Rup); - RIOFreeCmdBlk(CmdBlkP); - return RIO_FAIL; - } - - UnixRupP = &HostP->UnixRups[Rup]; - - rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); - - /* - ** If the RUP is currently inactive, then put the request - ** straight on the RUP.... - */ - if ((UnixRupP->CmdsWaitingP == NULL) && (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) && (CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) - : 1)) { - rio_dprintk(RIO_DEBUG_CMD, "RUP inactive-placing command straight on. Cmd byte is 0x%x\n", CmdBlkP->Packet.data[0]); - - /* - ** Whammy! blat that pack! - */ - HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT)); - - /* - ** place command packet on the pending position. - */ - UnixRupP->CmdPendingP = CmdBlkP; - - /* - ** set the command register - */ - writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); - - rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); - - return 0; - } - rio_dprintk(RIO_DEBUG_CMD, "RUP active - en-queing\n"); - - if (UnixRupP->CmdsWaitingP != NULL) - rio_dprintk(RIO_DEBUG_CMD, "Rup active - command waiting\n"); - if (UnixRupP->CmdPendingP != NULL) - rio_dprintk(RIO_DEBUG_CMD, "Rup active - command pending\n"); - if (readw(&UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE) - rio_dprintk(RIO_DEBUG_CMD, "Rup active - command rup not ready\n"); - - Base = &UnixRupP->CmdsWaitingP; - - rio_dprintk(RIO_DEBUG_CMD, "First try to queue cmdblk %p at %p\n", CmdBlkP, Base); - - while (*Base) { - rio_dprintk(RIO_DEBUG_CMD, "Command cmdblk %p here\n", *Base); - Base = &((*Base)->NextP); - rio_dprintk(RIO_DEBUG_CMD, "Now try to queue cmd cmdblk %p at %p\n", CmdBlkP, Base); - } - - rio_dprintk(RIO_DEBUG_CMD, "Will queue cmdblk %p at %p\n", CmdBlkP, Base); - - *Base = CmdBlkP; - - CmdBlkP->NextP = NULL; - - rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); - - return 0; -} - -/* -** Here we go - if there is an empty rup, fill it! -** must be called at splrio() or higher. -*/ -void RIOPollHostCommands(struct rio_info *p, struct Host *HostP) -{ - struct CmdBlk *CmdBlkP; - struct UnixRup *UnixRupP; - struct PKT __iomem *PacketP; - unsigned short Rup; - unsigned long flags; - - - Rup = MAX_RUP + LINKS_PER_UNIT; - - do { /* do this loop for each RUP */ - /* - ** locate the rup we are processing & lock it - */ - UnixRupP = &HostP->UnixRups[--Rup]; - - spin_lock_irqsave(&UnixRupP->RupLock, flags); - - /* - ** First check for incoming commands: - */ - if (readw(&UnixRupP->RupP->rxcontrol) != RX_RUP_INACTIVE) { - int FreeMe; - - PacketP = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->rxpkt)); - - switch (readb(&PacketP->dest_port)) { - case BOOT_RUP: - rio_dprintk(RIO_DEBUG_CMD, "Incoming Boot %s packet '%x'\n", readb(&PacketP->len) & 0x80 ? "Command" : "Data", readb(&PacketP->data[0])); - rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); - FreeMe = RIOBootRup(p, Rup, HostP, PacketP); - rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); - break; - - case COMMAND_RUP: - /* - ** Free the RUP lock as loss of carrier causes a - ** ttyflush which will (eventually) call another - ** routine that uses the RUP lock. - */ - rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); - FreeMe = RIOCommandRup(p, Rup, HostP, PacketP); - if (readb(&PacketP->data[5]) == RIOC_MEMDUMP) { - rio_dprintk(RIO_DEBUG_CMD, "Memdump from 0x%x complete\n", readw(&(PacketP->data[6]))); - rio_memcpy_fromio(p->RIOMemDump, &(PacketP->data[8]), 32); - } - rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); - break; - - case ROUTE_RUP: - rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); - FreeMe = RIORouteRup(p, Rup, HostP, PacketP); - rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); - break; - - default: - rio_dprintk(RIO_DEBUG_CMD, "Unknown RUP %d\n", readb(&PacketP->dest_port)); - FreeMe = 1; - break; - } - - if (FreeMe) { - rio_dprintk(RIO_DEBUG_CMD, "Free processed incoming command packet\n"); - put_free_end(HostP, PacketP); - - writew(RX_RUP_INACTIVE, &UnixRupP->RupP->rxcontrol); - - if (readw(&UnixRupP->RupP->handshake) == PHB_HANDSHAKE_SET) { - rio_dprintk(RIO_DEBUG_CMD, "Handshake rup %d\n", Rup); - writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &UnixRupP->RupP->handshake); - } - } - } - - /* - ** IF a command was running on the port, - ** and it has completed, then tidy it up. - */ - if ((CmdBlkP = UnixRupP->CmdPendingP) && /* ASSIGN! */ - (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { - /* - ** we are idle. - ** there is a command in pending. - ** Therefore, this command has finished. - ** So, wakeup whoever is waiting for it (and tell them - ** what happened). - */ - if (CmdBlkP->Packet.dest_port == BOOT_RUP) - rio_dprintk(RIO_DEBUG_CMD, "Free Boot %s Command Block '%x'\n", CmdBlkP->Packet.len & 0x80 ? "Command" : "Data", CmdBlkP->Packet.data[0]); - - rio_dprintk(RIO_DEBUG_CMD, "Command %p completed\n", CmdBlkP); - - /* - ** Clear the Rup lock to prevent mutual exclusion. - */ - if (CmdBlkP->PostFuncP) { - rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); - (*CmdBlkP->PostFuncP) (CmdBlkP->PostArg, CmdBlkP); - rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); - } - - /* - ** ....clear the pending flag.... - */ - UnixRupP->CmdPendingP = NULL; - - /* - ** ....and return the command block to the freelist. - */ - RIOFreeCmdBlk(CmdBlkP); - } - - /* - ** If there is a command for this rup, and the rup - ** is idle, then process the command - */ - if ((CmdBlkP = UnixRupP->CmdsWaitingP) && /* ASSIGN! */ - (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { - /* - ** if the pre-function is non-zero, call it. - ** If it returns RIO_FAIL then don't - ** send this command yet! - */ - if (!(CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) : 1)) { - rio_dprintk(RIO_DEBUG_CMD, "Not ready to start command %p\n", CmdBlkP); - } else { - rio_dprintk(RIO_DEBUG_CMD, "Start new command %p Cmd byte is 0x%x\n", CmdBlkP, CmdBlkP->Packet.data[0]); - /* - ** Whammy! blat that pack! - */ - HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT)); - - /* - ** remove the command from the rup command queue... - */ - UnixRupP->CmdsWaitingP = CmdBlkP->NextP; - - /* - ** ...and place it on the pending position. - */ - UnixRupP->CmdPendingP = CmdBlkP; - - /* - ** set the command register - */ - writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); - - /* - ** the command block will be freed - ** when the command has been processed. - */ - } - } - spin_unlock_irqrestore(&UnixRupP->RupLock, flags); - } while (Rup); -} - -int RIOWFlushMark(unsigned long iPortP, struct CmdBlk *CmdBlkP) -{ - struct Port *PortP = (struct Port *) iPortP; - unsigned long flags; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->WflushFlag++; - PortP->MagicFlags |= MAGIC_FLUSH; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return RIOUnUse(iPortP, CmdBlkP); -} - -int RIORFlushEnable(unsigned long iPortP, struct CmdBlk *CmdBlkP) -{ - struct Port *PortP = (struct Port *) iPortP; - struct PKT __iomem *PacketP; - unsigned long flags; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - - while (can_remove_receive(&PacketP, PortP)) { - remove_receive(PortP); - put_free_end(PortP->HostP, PacketP); - } - - if (readw(&PortP->PhbP->handshake) == PHB_HANDSHAKE_SET) { - /* - ** MAGIC! (Basically, handshake the RX buffer, so that - ** the RTAs upstream can be re-enabled.) - */ - rio_dprintk(RIO_DEBUG_CMD, "Util: Set RX handshake bit\n"); - writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake); - } - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return RIOUnUse(iPortP, CmdBlkP); -} - -int RIOUnUse(unsigned long iPortP, struct CmdBlk *CmdBlkP) -{ - struct Port *PortP = (struct Port *) iPortP; - unsigned long flags; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - - rio_dprintk(RIO_DEBUG_CMD, "Decrement in use count for port\n"); - - if (PortP->InUse) { - if (--PortP->InUse != NOT_INUSE) { - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return 0; - } - } - /* - ** While PortP->InUse is set (i.e. a preemptive command has been sent to - ** the RTA and is awaiting completion), any transmit data is prevented from - ** being transferred from the write queue into the transmit packets - ** (add_transmit) and no furthur transmit interrupt will be sent for that - ** data. The next interrupt will occur up to 500ms later (RIOIntr is called - ** twice a second as a saftey measure). This was the case when kermit was - ** used to send data into a RIO port. After each packet was sent, TCFLSH - ** was called to flush the read queue preemptively. PortP->InUse was - ** incremented, thereby blocking the 6 byte acknowledgement packet - ** transmitted back. This acknowledgment hung around for 500ms before - ** being sent, thus reducing input performance substantially!. - ** When PortP->InUse becomes NOT_INUSE, we must ensure that any data - ** hanging around in the transmit buffer is sent immediately. - */ - writew(1, &PortP->HostP->ParmMapP->tx_intr); - /* What to do here .. - wakeup( (caddr_t)&(PortP->InUse) ); - */ - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return 0; -} - -/* -** -** How to use this file: -** -** To send a command down a rup, you need to allocate a command block, fill -** in the packet information, fill in the command number, fill in the pre- -** and post- functions and arguments, and then add the command block to the -** queue of command blocks for the port in question. When the port is idle, -** then the pre-function will be called. If this returns RIO_FAIL then the -** command will be re-queued and tried again at a later date (probably in one -** clock tick). If the pre-function returns NOT RIO_FAIL, then the command -** packet will be queued on the RUP, and the txcontrol field set to the -** command number. When the txcontrol field has changed from being the -** command number, then the post-function will be called, with the argument -** specified earlier, a pointer to the command block, and the value of -** txcontrol. -** -** To allocate a command block, call RIOGetCmdBlk(). This returns a pointer -** to the command block structure allocated, or NULL if there aren't any. -** The block will have been zeroed for you. -** -** The structure has the following fields: -** -** struct CmdBlk -** { -** struct CmdBlk *NextP; ** Pointer to next command block ** -** struct PKT Packet; ** A packet, to copy to the rup ** -** int (*PreFuncP)(); ** The func to call to check if OK ** -** int PreArg; ** The arg for the func ** -** int (*PostFuncP)(); ** The func to call when completed ** -** int PostArg; ** The arg for the func ** -** }; -** -** You need to fill in ALL fields EXCEPT NextP, which is used to link the -** blocks together either on the free list or on the Rup list. -** -** Packet is an actual packet structure to be filled in with the packet -** information associated with the command. You need to fill in everything, -** as the command processor doesn't process the command packet in any way. -** -** The PreFuncP is called before the packet is enqueued on the host rup. -** PreFuncP is called as (*PreFuncP)(PreArg, CmdBlkP);. PreFuncP must -** return !RIO_FAIL to have the packet queued on the rup, and RIO_FAIL -** if the packet is NOT to be queued. -** -** The PostFuncP is called when the command has completed. It is called -** as (*PostFuncP)(PostArg, CmdBlkP, txcontrol);. PostFuncP is not expected -** to return a value. PostFuncP does NOT need to free the command block, -** as this happens automatically after PostFuncP returns. -** -** Once the command block has been filled in, it is attached to the correct -** queue by calling RIOQueueCmdBlk( HostP, Rup, CmdBlkP ) where HostP is -** a pointer to the struct Host, Rup is the NUMBER of the rup (NOT a pointer -** to it!), and CmdBlkP is the pointer to the command block allocated using -** RIOGetCmdBlk(). -** -*/ diff --git a/drivers/char/rio/rioctrl.c b/drivers/char/rio/rioctrl.c deleted file mode 100644 index 780506326a73..000000000000 --- a/drivers/char/rio/rioctrl.c +++ /dev/null @@ -1,1504 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rioctrl.c -** SID : 1.3 -** Last Modified : 11/6/98 10:33:42 -** Retrieved : 11/6/98 10:33:49 -** -** ident @(#)rioctrl.c 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" - - -static struct LpbReq LpbReq; -static struct RupReq RupReq; -static struct PortReq PortReq; -static struct HostReq HostReq; /* oh really? global? and no locking? */ -static struct HostDpRam HostDpRam; -static struct DebugCtrl DebugCtrl; -static struct Map MapEnt; -static struct PortSetup PortSetup; -static struct DownLoad DownLoad; -static struct SendPack SendPack; -/* static struct StreamInfo StreamInfo; */ -/* static char modemtable[RIO_PORTS]; */ -static struct SpecialRupCmd SpecialRupCmd; -static struct PortParams PortParams; -static struct portStats portStats; - -static struct SubCmdStruct { - ushort Host; - ushort Rup; - ushort Port; - ushort Addr; -} SubCmd; - -struct PortTty { - uint port; - struct ttystatics Tty; -}; - -static struct PortTty PortTty; -typedef struct ttystatics TERMIO; - -/* -** This table is used when the config.rio downloads bin code to the -** driver. We index the table using the product code, 0-F, and call -** the function pointed to by the entry, passing the information -** about the boot. -** The RIOBootCodeUNKNOWN entry is there to politely tell the calling -** process to bog off. -*/ -static int - (*RIOBootTable[MAX_PRODUCT]) (struct rio_info *, struct DownLoad *) = { - /* 0 */ RIOBootCodeHOST, - /* Host Card */ - /* 1 */ RIOBootCodeRTA, - /* RTA */ -}; - -#define drv_makedev(maj, min) ((((uint) maj & 0xff) << 8) | ((uint) min & 0xff)) - -static int copy_from_io(void __user *to, void __iomem *from, size_t size) -{ - void *buf = kmalloc(size, GFP_KERNEL); - int res = -ENOMEM; - if (buf) { - rio_memcpy_fromio(buf, from, size); - res = copy_to_user(to, buf, size); - kfree(buf); - } - return res; -} - -int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su) -{ - uint Host; /* leave me unsigned! */ - uint port; /* and me! */ - struct Host *HostP; - ushort loop; - int Entry; - struct Port *PortP; - struct PKT __iomem *PacketP; - int retval = 0; - unsigned long flags; - void __user *argp = (void __user *)arg; - - func_enter(); - - /* Confuse the compiler to think that we've initialized these */ - Host = 0; - PortP = NULL; - - rio_dprintk(RIO_DEBUG_CTRL, "control ioctl cmd: 0x%x arg: %p\n", cmd, argp); - - switch (cmd) { - /* - ** RIO_SET_TIMER - ** - ** Change the value of the host card interrupt timer. - ** If the host card number is -1 then all host cards are changed - ** otherwise just the specified host card will be changed. - */ - case RIO_SET_TIMER: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_TIMER to %ldms\n", arg); - { - int host, value; - host = (arg >> 16) & 0x0000FFFF; - value = arg & 0x0000ffff; - if (host == -1) { - for (host = 0; host < p->RIONumHosts; host++) { - if (p->RIOHosts[host].Flags == RC_RUNNING) { - writew(value, &p->RIOHosts[host].ParmMapP->timer); - } - } - } else if (host >= p->RIONumHosts) { - return -EINVAL; - } else { - if (p->RIOHosts[host].Flags == RC_RUNNING) { - writew(value, &p->RIOHosts[host].ParmMapP->timer); - } - } - } - return 0; - - case RIO_FOAD_RTA: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_FOAD_RTA\n"); - return RIOCommandRta(p, arg, RIOFoadRta); - - case RIO_ZOMBIE_RTA: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_ZOMBIE_RTA\n"); - return RIOCommandRta(p, arg, RIOZombieRta); - - case RIO_IDENTIFY_RTA: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_IDENTIFY_RTA\n"); - return RIOIdentifyRta(p, argp); - - case RIO_KILL_NEIGHBOUR: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_KILL_NEIGHBOUR\n"); - return RIOKillNeighbour(p, argp); - - case SPECIAL_RUP_CMD: - { - struct CmdBlk *CmdBlkP; - - rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD\n"); - if (copy_from_user(&SpecialRupCmd, argp, sizeof(SpecialRupCmd))) { - rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD copy failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - CmdBlkP = RIOGetCmdBlk(); - if (!CmdBlkP) { - rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD GetCmdBlk failed\n"); - return -ENXIO; - } - CmdBlkP->Packet = SpecialRupCmd.Packet; - if (SpecialRupCmd.Host >= p->RIONumHosts) - SpecialRupCmd.Host = 0; - rio_dprintk(RIO_DEBUG_CTRL, "Queue special rup command for host %d rup %d\n", SpecialRupCmd.Host, SpecialRupCmd.RupNum); - if (RIOQueueCmdBlk(&p->RIOHosts[SpecialRupCmd.Host], SpecialRupCmd.RupNum, CmdBlkP) == RIO_FAIL) { - printk(KERN_WARNING "rio: FAILED TO QUEUE SPECIAL RUP COMMAND\n"); - } - return 0; - } - - case RIO_DEBUG_MEM: - return -EPERM; - - case RIO_ALL_MODEM: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_ALL_MODEM\n"); - p->RIOError.Error = IOCTL_COMMAND_UNKNOWN; - return -EINVAL; - - case RIO_GET_TABLE: - /* - ** Read the routing table from the device driver to user space - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_TABLE\n"); - - if ((retval = RIOApel(p)) != 0) - return retval; - - if (copy_to_user(argp, p->RIOConnectTable, TOTAL_MAP_ENTRIES * sizeof(struct Map))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_TABLE copy failed\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - - { - int entry; - rio_dprintk(RIO_DEBUG_CTRL, "*****\nMAP ENTRIES\n"); - for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) { - if ((p->RIOConnectTable[entry].ID == 0) && (p->RIOConnectTable[entry].HostUniqueNum == 0) && (p->RIOConnectTable[entry].RtaUniqueNum == 0)) - continue; - - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.HostUniqueNum = 0x%x\n", entry, p->RIOConnectTable[entry].HostUniqueNum); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.RtaUniqueNum = 0x%x\n", entry, p->RIOConnectTable[entry].RtaUniqueNum); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.ID = 0x%x\n", entry, p->RIOConnectTable[entry].ID); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.ID2 = 0x%x\n", entry, p->RIOConnectTable[entry].ID2); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Flags = 0x%x\n", entry, (int) p->RIOConnectTable[entry].Flags); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.SysPort = 0x%x\n", entry, (int) p->RIOConnectTable[entry].SysPort); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[0].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[0].Unit); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[0].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[0].Link); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[1].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[1].Unit); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[1].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[1].Link); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[2].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[2].Unit); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[2].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[2].Link); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[3].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[3].Unit); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[4].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[3].Link); - rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Name = %s\n", entry, p->RIOConnectTable[entry].Name); - } - rio_dprintk(RIO_DEBUG_CTRL, "*****\nEND MAP ENTRIES\n"); - } - p->RIOQuickCheck = NOT_CHANGED; /* a table has been gotten */ - return 0; - - case RIO_PUT_TABLE: - /* - ** Write the routing table to the device driver from user space - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_TABLE\n"); - - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_TABLE !Root\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_from_user(&p->RIOConnectTable[0], argp, TOTAL_MAP_ENTRIES * sizeof(struct Map))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_TABLE copy failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } -/* -*********************************** - { - int entry; - rio_dprint(RIO_DEBUG_CTRL, ("*****\nMAP ENTRIES\n") ); - for ( entry=0; entryRIOConnectTable[entry].HostUniqueNum ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.RtaUniqueNum = 0x%x\n", entry, p->RIOConnectTable[entry].RtaUniqueNum ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.ID = 0x%x\n", entry, p->RIOConnectTable[entry].ID ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.ID2 = 0x%x\n", entry, p->RIOConnectTable[entry].ID2 ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Flags = 0x%x\n", entry, p->RIOConnectTable[entry].Flags ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.SysPort = 0x%x\n", entry, p->RIOConnectTable[entry].SysPort ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[0].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[0].Unit ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[0].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[0].Link ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[1].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[1].Unit ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[1].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[1].Link ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[2].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[2].Unit ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[2].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[2].Link ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[3].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[3].Unit ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[4].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[3].Link ) ); - rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Name = %s\n", entry, p->RIOConnectTable[entry].Name ) ); - } - rio_dprint(RIO_DEBUG_CTRL, ("*****\nEND MAP ENTRIES\n") ); - } -*********************************** -*/ - return RIONewTable(p); - - case RIO_GET_BINDINGS: - /* - ** Send bindings table, containing unique numbers of RTAs owned - ** by this system to user space - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_BINDINGS\n"); - - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_BINDINGS !Root\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_to_user(argp, p->RIOBindTab, (sizeof(ulong) * MAX_RTA_BINDINGS))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_BINDINGS copy failed\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return 0; - - case RIO_PUT_BINDINGS: - /* - ** Receive a bindings table, containing unique numbers of RTAs owned - ** by this system - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_BINDINGS\n"); - - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_BINDINGS !Root\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_from_user(&p->RIOBindTab[0], argp, (sizeof(ulong) * MAX_RTA_BINDINGS))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_BINDINGS copy failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - return 0; - - case RIO_BIND_RTA: - { - int EmptySlot = -1; - /* - ** Bind this RTA to host, so that it will be booted by - ** host in 'boot owned RTAs' mode. - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_BIND_RTA\n"); - - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_BIND_RTA !Root\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - for (Entry = 0; Entry < MAX_RTA_BINDINGS; Entry++) { - if ((EmptySlot == -1) && (p->RIOBindTab[Entry] == 0L)) - EmptySlot = Entry; - else if (p->RIOBindTab[Entry] == arg) { - /* - ** Already exists - delete - */ - p->RIOBindTab[Entry] = 0L; - rio_dprintk(RIO_DEBUG_CTRL, "Removing Rta %ld from p->RIOBindTab\n", arg); - return 0; - } - } - /* - ** Dosen't exist - add - */ - if (EmptySlot != -1) { - p->RIOBindTab[EmptySlot] = arg; - rio_dprintk(RIO_DEBUG_CTRL, "Adding Rta %lx to p->RIOBindTab\n", arg); - } else { - rio_dprintk(RIO_DEBUG_CTRL, "p->RIOBindTab full! - Rta %lx not added\n", arg); - return -ENOMEM; - } - return 0; - } - - case RIO_RESUME: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME\n"); - port = arg; - if ((port < 0) || (port > 511)) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Bad port number %d\n", port); - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - PortP = p->RIOPortp[port]; - if (!PortP->Mapped) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Port %d not mapped\n", port); - p->RIOError.Error = PORT_NOT_MAPPED_INTO_SYSTEM; - return -EINVAL; - } - if (!(PortP->State & (RIO_LOPEN | RIO_MOPEN))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Port %d not open\n", port); - return -EINVAL; - } - - rio_spin_lock_irqsave(&PortP->portSem, flags); - if (RIOPreemptiveCmd(p, (p->RIOPortp[port]), RIOC_RESUME) == - RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME failed\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return -EBUSY; - } else { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Port %d resumed\n", port); - PortP->State |= RIO_BUSY; - } - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - - case RIO_ASSIGN_RTA: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_ASSIGN_RTA\n"); - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_ASSIGN_RTA !Root\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) { - rio_dprintk(RIO_DEBUG_CTRL, "Copy from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - return RIOAssignRta(p, &MapEnt); - - case RIO_CHANGE_NAME: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_CHANGE_NAME\n"); - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_CHANGE_NAME !Root\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) { - rio_dprintk(RIO_DEBUG_CTRL, "Copy from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - return RIOChangeName(p, &MapEnt); - - case RIO_DELETE_RTA: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_DELETE_RTA\n"); - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_DELETE_RTA !Root\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) { - rio_dprintk(RIO_DEBUG_CTRL, "Copy from data space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - return RIODeleteRta(p, &MapEnt); - - case RIO_QUICK_CHECK: - if (copy_to_user(argp, &p->RIORtaDisCons, sizeof(unsigned int))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return 0; - - case RIO_LAST_ERROR: - if (copy_to_user(argp, &p->RIOError, sizeof(struct Error))) - return -EFAULT; - return 0; - - case RIO_GET_LOG: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_LOG\n"); - return -EINVAL; - - case RIO_GET_MODTYPE: - if (copy_from_user(&port, argp, sizeof(unsigned int))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - rio_dprintk(RIO_DEBUG_CTRL, "Get module type for port %d\n", port); - if (port < 0 || port > 511) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_MODTYPE: Bad port number %d\n", port); - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - PortP = (p->RIOPortp[port]); - if (!PortP->Mapped) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_MODTYPE: Port %d not mapped\n", port); - p->RIOError.Error = PORT_NOT_MAPPED_INTO_SYSTEM; - return -EINVAL; - } - /* - ** Return module type of port - */ - port = PortP->HostP->UnixRups[PortP->RupNum].ModTypes; - if (copy_to_user(argp, &port, sizeof(unsigned int))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return (0); - case RIO_BLOCK_OPENS: - rio_dprintk(RIO_DEBUG_CTRL, "Opens block until booted\n"); - for (Entry = 0; Entry < RIO_PORTS; Entry++) { - rio_spin_lock_irqsave(&PortP->portSem, flags); - p->RIOPortp[Entry]->WaitUntilBooted = 1; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - } - return 0; - - case RIO_SETUP_PORTS: - rio_dprintk(RIO_DEBUG_CTRL, "Setup ports\n"); - if (copy_from_user(&PortSetup, argp, sizeof(PortSetup))) { - p->RIOError.Error = COPYIN_FAILED; - rio_dprintk(RIO_DEBUG_CTRL, "EFAULT"); - return -EFAULT; - } - if (PortSetup.From > PortSetup.To || PortSetup.To >= RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - rio_dprintk(RIO_DEBUG_CTRL, "ENXIO"); - return -ENXIO; - } - if (PortSetup.XpCps > p->RIOConf.MaxXpCps || PortSetup.XpCps < p->RIOConf.MinXpCps) { - p->RIOError.Error = XPRINT_CPS_OUT_OF_RANGE; - rio_dprintk(RIO_DEBUG_CTRL, "EINVAL"); - return -EINVAL; - } - if (!p->RIOPortp) { - printk(KERN_ERR "rio: No p->RIOPortp array!\n"); - rio_dprintk(RIO_DEBUG_CTRL, "No p->RIOPortp array!\n"); - return -EIO; - } - rio_dprintk(RIO_DEBUG_CTRL, "entering loop (%d %d)!\n", PortSetup.From, PortSetup.To); - for (loop = PortSetup.From; loop <= PortSetup.To; loop++) { - rio_dprintk(RIO_DEBUG_CTRL, "in loop (%d)!\n", loop); - } - rio_dprintk(RIO_DEBUG_CTRL, "after loop (%d)!\n", loop); - rio_dprintk(RIO_DEBUG_CTRL, "Retval:%x\n", retval); - return retval; - - case RIO_GET_PORT_SETUP: - rio_dprintk(RIO_DEBUG_CTRL, "Get port setup\n"); - if (copy_from_user(&PortSetup, argp, sizeof(PortSetup))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (PortSetup.From >= RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - - port = PortSetup.To = PortSetup.From; - PortSetup.IxAny = (p->RIOPortp[port]->Config & RIO_IXANY) ? 1 : 0; - PortSetup.IxOn = (p->RIOPortp[port]->Config & RIO_IXON) ? 1 : 0; - PortSetup.Drain = (p->RIOPortp[port]->Config & RIO_WAITDRAIN) ? 1 : 0; - PortSetup.Store = p->RIOPortp[port]->Store; - PortSetup.Lock = p->RIOPortp[port]->Lock; - PortSetup.XpCps = p->RIOPortp[port]->Xprint.XpCps; - memcpy(PortSetup.XpOn, p->RIOPortp[port]->Xprint.XpOn, MAX_XP_CTRL_LEN); - memcpy(PortSetup.XpOff, p->RIOPortp[port]->Xprint.XpOff, MAX_XP_CTRL_LEN); - PortSetup.XpOn[MAX_XP_CTRL_LEN - 1] = '\0'; - PortSetup.XpOff[MAX_XP_CTRL_LEN - 1] = '\0'; - - if (copy_to_user(argp, &PortSetup, sizeof(PortSetup))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - case RIO_GET_PORT_PARAMS: - rio_dprintk(RIO_DEBUG_CTRL, "Get port params\n"); - if (copy_from_user(&PortParams, argp, sizeof(struct PortParams))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (PortParams.Port >= RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - PortP = (p->RIOPortp[PortParams.Port]); - PortParams.Config = PortP->Config; - PortParams.State = PortP->State; - rio_dprintk(RIO_DEBUG_CTRL, "Port %d\n", PortParams.Port); - - if (copy_to_user(argp, &PortParams, sizeof(struct PortParams))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - case RIO_GET_PORT_TTY: - rio_dprintk(RIO_DEBUG_CTRL, "Get port tty\n"); - if (copy_from_user(&PortTty, argp, sizeof(struct PortTty))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (PortTty.port >= RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - - rio_dprintk(RIO_DEBUG_CTRL, "Port %d\n", PortTty.port); - PortP = (p->RIOPortp[PortTty.port]); - if (copy_to_user(argp, &PortTty, sizeof(struct PortTty))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - case RIO_SET_PORT_TTY: - if (copy_from_user(&PortTty, argp, sizeof(struct PortTty))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - rio_dprintk(RIO_DEBUG_CTRL, "Set port %d tty\n", PortTty.port); - if (PortTty.port >= (ushort) RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - PortP = (p->RIOPortp[PortTty.port]); - RIOParam(PortP, RIOC_CONFIG, PortP->State & RIO_MODEM, - OK_TO_SLEEP); - return retval; - - case RIO_SET_PORT_PARAMS: - rio_dprintk(RIO_DEBUG_CTRL, "Set port params\n"); - if (copy_from_user(&PortParams, argp, sizeof(PortParams))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (PortParams.Port >= (ushort) RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - PortP = (p->RIOPortp[PortParams.Port]); - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->Config = PortParams.Config; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - - case RIO_GET_PORT_STATS: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_PORT_STATS\n"); - if (copy_from_user(&portStats, argp, sizeof(struct portStats))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (portStats.port < 0 || portStats.port >= RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - PortP = (p->RIOPortp[portStats.port]); - portStats.gather = PortP->statsGather; - portStats.txchars = PortP->txchars; - portStats.rxchars = PortP->rxchars; - portStats.opens = PortP->opens; - portStats.closes = PortP->closes; - portStats.ioctls = PortP->ioctls; - if (copy_to_user(argp, &portStats, sizeof(struct portStats))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - case RIO_RESET_PORT_STATS: - port = arg; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESET_PORT_STATS\n"); - if (port >= RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - PortP = (p->RIOPortp[port]); - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->txchars = 0; - PortP->rxchars = 0; - PortP->opens = 0; - PortP->closes = 0; - PortP->ioctls = 0; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - - case RIO_GATHER_PORT_STATS: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GATHER_PORT_STATS\n"); - if (copy_from_user(&portStats, argp, sizeof(struct portStats))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (portStats.port < 0 || portStats.port >= RIO_PORTS) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - PortP = (p->RIOPortp[portStats.port]); - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->statsGather = portStats.gather; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - - case RIO_READ_CONFIG: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_CONFIG\n"); - if (copy_to_user(argp, &p->RIOConf, sizeof(struct Conf))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - case RIO_SET_CONFIG: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_CONFIG\n"); - if (!su) { - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_from_user(&p->RIOConf, argp, sizeof(struct Conf))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - /* - ** move a few value around - */ - for (Host = 0; Host < p->RIONumHosts; Host++) - if ((p->RIOHosts[Host].Flags & RUN_STATE) == RC_RUNNING) - writew(p->RIOConf.Timer, &p->RIOHosts[Host].ParmMapP->timer); - return retval; - - case RIO_START_POLLER: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_START_POLLER\n"); - return -EINVAL; - - case RIO_STOP_POLLER: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_STOP_POLLER\n"); - if (!su) { - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - p->RIOPolling = NOT_POLLING; - return retval; - - case RIO_SETDEBUG: - case RIO_GETDEBUG: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SETDEBUG/RIO_GETDEBUG\n"); - if (copy_from_user(&DebugCtrl, argp, sizeof(DebugCtrl))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (DebugCtrl.SysPort == NO_PORT) { - if (cmd == RIO_SETDEBUG) { - if (!su) { - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - p->rio_debug = DebugCtrl.Debug; - p->RIODebugWait = DebugCtrl.Wait; - rio_dprintk(RIO_DEBUG_CTRL, "Set global debug to 0x%x set wait to 0x%x\n", p->rio_debug, p->RIODebugWait); - } else { - rio_dprintk(RIO_DEBUG_CTRL, "Get global debug 0x%x wait 0x%x\n", p->rio_debug, p->RIODebugWait); - DebugCtrl.Debug = p->rio_debug; - DebugCtrl.Wait = p->RIODebugWait; - if (copy_to_user(argp, &DebugCtrl, sizeof(DebugCtrl))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET/GET DEBUG: bad port number %d\n", DebugCtrl.SysPort); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - } - } else if (DebugCtrl.SysPort >= RIO_PORTS && DebugCtrl.SysPort != NO_PORT) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET/GET DEBUG: bad port number %d\n", DebugCtrl.SysPort); - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } else if (cmd == RIO_SETDEBUG) { - if (!su) { - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - p->RIOPortp[DebugCtrl.SysPort]->Debug = DebugCtrl.Debug; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SETDEBUG 0x%x\n", p->RIOPortp[DebugCtrl.SysPort]->Debug); - } else { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GETDEBUG 0x%x\n", p->RIOPortp[DebugCtrl.SysPort]->Debug); - DebugCtrl.Debug = p->RIOPortp[DebugCtrl.SysPort]->Debug; - if (copy_to_user(argp, &DebugCtrl, sizeof(DebugCtrl))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_GETDEBUG: Bad copy to user space\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - } - return retval; - - case RIO_VERSID: - /* - ** Enquire about the release and version. - ** We return MAX_VERSION_LEN bytes, being a - ** textual null terminated string. - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_VERSID\n"); - if (copy_to_user(argp, RIOVersid(), sizeof(struct rioVersion))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_VERSID: Bad copy to user space (host=%d)\n", Host); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - case RIO_NUM_HOSTS: - /* - ** Enquire as to the number of hosts located - ** at init time. - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_NUM_HOSTS\n"); - if (copy_to_user(argp, &p->RIONumHosts, sizeof(p->RIONumHosts))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_NUM_HOSTS: Bad copy to user space\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - case RIO_HOST_FOAD: - /* - ** Kill host. This may not be in the final version... - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_FOAD %ld\n", arg); - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_FOAD: Not super user\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - p->RIOHalted = 1; - p->RIOSystemUp = 0; - - for (Host = 0; Host < p->RIONumHosts; Host++) { - (void) RIOBoardTest(p->RIOHosts[Host].PaddrP, p->RIOHosts[Host].Caddr, p->RIOHosts[Host].Type, p->RIOHosts[Host].Slot); - memset(&p->RIOHosts[Host].Flags, 0, ((char *) &p->RIOHosts[Host].____end_marker____) - ((char *) &p->RIOHosts[Host].Flags)); - p->RIOHosts[Host].Flags = RC_WAITING; - } - RIOFoadWakeup(p); - p->RIONumBootPkts = 0; - p->RIOBooting = 0; - printk("HEEEEELP!\n"); - - for (loop = 0; loop < RIO_PORTS; loop++) { - spin_lock_init(&p->RIOPortp[loop]->portSem); - p->RIOPortp[loop]->InUse = NOT_INUSE; - } - - p->RIOSystemUp = 0; - return retval; - - case RIO_DOWNLOAD: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD\n"); - if (!su) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Not super user\n"); - p->RIOError.Error = NOT_SUPER_USER; - return -EPERM; - } - if (copy_from_user(&DownLoad, argp, sizeof(DownLoad))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Copy in from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - rio_dprintk(RIO_DEBUG_CTRL, "Copied in download code for product code 0x%x\n", DownLoad.ProductCode); - - /* - ** It is important that the product code is an unsigned object! - */ - if (DownLoad.ProductCode >= MAX_PRODUCT) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Bad product code %d passed\n", DownLoad.ProductCode); - p->RIOError.Error = NO_SUCH_PRODUCT; - return -ENXIO; - } - /* - ** do something! - */ - retval = (*(RIOBootTable[DownLoad.ProductCode])) (p, &DownLoad); - /* <-- Panic */ - p->RIOHalted = 0; - /* - ** and go back, content with a job well completed. - */ - return retval; - - case RIO_PARMS: - { - unsigned int host; - - if (copy_from_user(&host, argp, sizeof(host))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Copy in from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - /* - ** Fetch the parmmap - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PARMS\n"); - if (copy_from_io(argp, p->RIOHosts[host].ParmMapP, sizeof(PARM_MAP))) { - p->RIOError.Error = COPYOUT_FAILED; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_PARMS: Copy out to user space failed\n"); - return -EFAULT; - } - } - return retval; - - case RIO_HOST_REQ: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ\n"); - if (copy_from_user(&HostReq, argp, sizeof(HostReq))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Copy in from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (HostReq.HostNum >= p->RIONumHosts) { - p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Illegal host number %d\n", HostReq.HostNum); - return -ENXIO; - } - rio_dprintk(RIO_DEBUG_CTRL, "Request for host %d\n", HostReq.HostNum); - - if (copy_to_user(HostReq.HostP, &p->RIOHosts[HostReq.HostNum], sizeof(struct Host))) { - p->RIOError.Error = COPYOUT_FAILED; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Bad copy to user space\n"); - return -EFAULT; - } - return retval; - - case RIO_HOST_DPRAM: - rio_dprintk(RIO_DEBUG_CTRL, "Request for DPRAM\n"); - if (copy_from_user(&HostDpRam, argp, sizeof(HostDpRam))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Copy in from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (HostDpRam.HostNum >= p->RIONumHosts) { - p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Illegal host number %d\n", HostDpRam.HostNum); - return -ENXIO; - } - rio_dprintk(RIO_DEBUG_CTRL, "Request for host %d\n", HostDpRam.HostNum); - - if (p->RIOHosts[HostDpRam.HostNum].Type == RIO_PCI) { - int off; - /* It's hardware like this that really gets on my tits. */ - static unsigned char copy[sizeof(struct DpRam)]; - for (off = 0; off < sizeof(struct DpRam); off++) - copy[off] = readb(p->RIOHosts[HostDpRam.HostNum].Caddr + off); - if (copy_to_user(HostDpRam.DpRamP, copy, sizeof(struct DpRam))) { - p->RIOError.Error = COPYOUT_FAILED; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Bad copy to user space\n"); - return -EFAULT; - } - } else if (copy_from_io(HostDpRam.DpRamP, p->RIOHosts[HostDpRam.HostNum].Caddr, sizeof(struct DpRam))) { - p->RIOError.Error = COPYOUT_FAILED; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Bad copy to user space\n"); - return -EFAULT; - } - return retval; - - case RIO_SET_BUSY: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_BUSY\n"); - if (arg > 511) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_BUSY: Bad port number %ld\n", arg); - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - p->RIOPortp[arg]->State |= RIO_BUSY; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - - case RIO_HOST_PORT: - /* - ** The daemon want port information - ** (probably for debug reasons) - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT\n"); - if (copy_from_user(&PortReq, argp, sizeof(PortReq))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT: Copy in from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - - if (PortReq.SysPort >= RIO_PORTS) { /* SysPort is unsigned */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT: Illegal port number %d\n", PortReq.SysPort); - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - rio_dprintk(RIO_DEBUG_CTRL, "Request for port %d\n", PortReq.SysPort); - if (copy_to_user(PortReq.PortP, p->RIOPortp[PortReq.SysPort], sizeof(struct Port))) { - p->RIOError.Error = COPYOUT_FAILED; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT: Bad copy to user space\n"); - return -EFAULT; - } - return retval; - - case RIO_HOST_RUP: - /* - ** The daemon want rup information - ** (probably for debug reasons) - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP\n"); - if (copy_from_user(&RupReq, argp, sizeof(RupReq))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Copy in from user space failed\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (RupReq.HostNum >= p->RIONumHosts) { /* host is unsigned */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Illegal host number %d\n", RupReq.HostNum); - p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - if (RupReq.RupNum >= MAX_RUP + LINKS_PER_UNIT) { /* eek! */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Illegal rup number %d\n", RupReq.RupNum); - p->RIOError.Error = RUP_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - HostP = &p->RIOHosts[RupReq.HostNum]; - - if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Host %d not running\n", RupReq.HostNum); - p->RIOError.Error = HOST_NOT_RUNNING; - return -EIO; - } - rio_dprintk(RIO_DEBUG_CTRL, "Request for rup %d from host %d\n", RupReq.RupNum, RupReq.HostNum); - - if (copy_from_io(RupReq.RupP, HostP->UnixRups[RupReq.RupNum].RupP, sizeof(struct RUP))) { - p->RIOError.Error = COPYOUT_FAILED; - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Bad copy to user space\n"); - return -EFAULT; - } - return retval; - - case RIO_HOST_LPB: - /* - ** The daemon want lpb information - ** (probably for debug reasons) - */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB\n"); - if (copy_from_user(&LpbReq, argp, sizeof(LpbReq))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Bad copy from user space\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (LpbReq.Host >= p->RIONumHosts) { /* host is unsigned */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Illegal host number %d\n", LpbReq.Host); - p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - if (LpbReq.Link >= LINKS_PER_UNIT) { /* eek! */ - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Illegal link number %d\n", LpbReq.Link); - p->RIOError.Error = LINK_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - HostP = &p->RIOHosts[LpbReq.Host]; - - if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Host %d not running\n", LpbReq.Host); - p->RIOError.Error = HOST_NOT_RUNNING; - return -EIO; - } - rio_dprintk(RIO_DEBUG_CTRL, "Request for lpb %d from host %d\n", LpbReq.Link, LpbReq.Host); - - if (copy_from_io(LpbReq.LpbP, &HostP->LinkStrP[LpbReq.Link], sizeof(struct LPB))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Bad copy to user space\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return retval; - - /* - ** Here 3 IOCTL's that allow us to change the way in which - ** rio logs errors. send them just to syslog or send them - ** to both syslog and console or send them to just the console. - ** - ** See RioStrBuf() in util.c for the other half. - */ - case RIO_SYSLOG_ONLY: - p->RIOPrintLogState = PRINT_TO_LOG; /* Just syslog */ - return 0; - - case RIO_SYSLOG_CONS: - p->RIOPrintLogState = PRINT_TO_LOG_CONS; /* syslog and console */ - return 0; - - case RIO_CONS_ONLY: - p->RIOPrintLogState = PRINT_TO_CONS; /* Just console */ - return 0; - - case RIO_SIGNALS_ON: - if (p->RIOSignalProcess) { - p->RIOError.Error = SIGNALS_ALREADY_SET; - return -EBUSY; - } - /* FIXME: PID tracking */ - p->RIOSignalProcess = current->pid; - p->RIOPrintDisabled = DONT_PRINT; - return retval; - - case RIO_SIGNALS_OFF: - if (p->RIOSignalProcess != current->pid) { - p->RIOError.Error = NOT_RECEIVING_PROCESS; - return -EPERM; - } - rio_dprintk(RIO_DEBUG_CTRL, "Clear signal process to zero\n"); - p->RIOSignalProcess = 0; - return retval; - - case RIO_SET_BYTE_MODE: - for (Host = 0; Host < p->RIONumHosts; Host++) - if (p->RIOHosts[Host].Type == RIO_AT) - p->RIOHosts[Host].Mode &= ~WORD_OPERATION; - return retval; - - case RIO_SET_WORD_MODE: - for (Host = 0; Host < p->RIONumHosts; Host++) - if (p->RIOHosts[Host].Type == RIO_AT) - p->RIOHosts[Host].Mode |= WORD_OPERATION; - return retval; - - case RIO_SET_FAST_BUS: - for (Host = 0; Host < p->RIONumHosts; Host++) - if (p->RIOHosts[Host].Type == RIO_AT) - p->RIOHosts[Host].Mode |= FAST_AT_BUS; - return retval; - - case RIO_SET_SLOW_BUS: - for (Host = 0; Host < p->RIONumHosts; Host++) - if (p->RIOHosts[Host].Type == RIO_AT) - p->RIOHosts[Host].Mode &= ~FAST_AT_BUS; - return retval; - - case RIO_MAP_B50_TO_50: - case RIO_MAP_B50_TO_57600: - case RIO_MAP_B110_TO_110: - case RIO_MAP_B110_TO_115200: - rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping\n"); - port = arg; - if (port < 0 || port > 511) { - rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping: Bad port number %d\n", port); - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - switch (cmd) { - case RIO_MAP_B50_TO_50: - p->RIOPortp[port]->Config |= RIO_MAP_50_TO_50; - break; - case RIO_MAP_B50_TO_57600: - p->RIOPortp[port]->Config &= ~RIO_MAP_50_TO_50; - break; - case RIO_MAP_B110_TO_110: - p->RIOPortp[port]->Config |= RIO_MAP_110_TO_110; - break; - case RIO_MAP_B110_TO_115200: - p->RIOPortp[port]->Config &= ~RIO_MAP_110_TO_110; - break; - } - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - - case RIO_STREAM_INFO: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_STREAM_INFO\n"); - return -EINVAL; - - case RIO_SEND_PACKET: - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SEND_PACKET\n"); - if (copy_from_user(&SendPack, argp, sizeof(SendPack))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_SEND_PACKET: Bad copy from user space\n"); - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - if (SendPack.PortNum >= 128) { - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -ENXIO; - } - - PortP = p->RIOPortp[SendPack.PortNum]; - rio_spin_lock_irqsave(&PortP->portSem, flags); - - if (!can_add_transmit(&PacketP, PortP)) { - p->RIOError.Error = UNIT_IS_IN_USE; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return -ENOSPC; - } - - for (loop = 0; loop < (ushort) (SendPack.Len & 127); loop++) - writeb(SendPack.Data[loop], &PacketP->data[loop]); - - writeb(SendPack.Len, &PacketP->len); - - add_transmit(PortP); - /* - ** Count characters transmitted for port statistics reporting - */ - if (PortP->statsGather) - PortP->txchars += (SendPack.Len & 127); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - - case RIO_NO_MESG: - if (su) - p->RIONoMessage = 1; - return su ? 0 : -EPERM; - - case RIO_MESG: - if (su) - p->RIONoMessage = 0; - return su ? 0 : -EPERM; - - case RIO_WHAT_MESG: - if (copy_to_user(argp, &p->RIONoMessage, sizeof(p->RIONoMessage))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_WHAT_MESG: Bad copy to user space\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return 0; - - case RIO_MEM_DUMP: - if (copy_from_user(&SubCmd, argp, sizeof(struct SubCmdStruct))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP host %d rup %d addr %x\n", SubCmd.Host, SubCmd.Rup, SubCmd.Addr); - - if (SubCmd.Rup >= MAX_RUP + LINKS_PER_UNIT) { - p->RIOError.Error = RUP_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - - if (SubCmd.Host >= p->RIONumHosts) { - p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - - port = p->RIOHosts[SubCmd.Host].UnixRups[SubCmd.Rup].BaseSysPort; - - PortP = p->RIOPortp[port]; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - - if (RIOPreemptiveCmd(p, PortP, RIOC_MEMDUMP) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP failed\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return -EBUSY; - } else - PortP->State |= RIO_BUSY; - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (copy_to_user(argp, p->RIOMemDump, MEMDUMP_SIZE)) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP copy failed\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return 0; - - case RIO_TICK: - if (arg >= p->RIONumHosts) - return -EINVAL; - rio_dprintk(RIO_DEBUG_CTRL, "Set interrupt for host %ld\n", arg); - writeb(0xFF, &p->RIOHosts[arg].SetInt); - return 0; - - case RIO_TOCK: - if (arg >= p->RIONumHosts) - return -EINVAL; - rio_dprintk(RIO_DEBUG_CTRL, "Clear interrupt for host %ld\n", arg); - writeb(0xFF, &p->RIOHosts[arg].ResetInt); - return 0; - - case RIO_READ_CHECK: - /* Check reads for pkts with data[0] the same */ - p->RIOReadCheck = !p->RIOReadCheck; - if (copy_to_user(argp, &p->RIOReadCheck, sizeof(unsigned int))) { - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return 0; - - case RIO_READ_REGISTER: - if (copy_from_user(&SubCmd, argp, sizeof(struct SubCmdStruct))) { - p->RIOError.Error = COPYIN_FAILED; - return -EFAULT; - } - rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER host %d rup %d port %d reg %x\n", SubCmd.Host, SubCmd.Rup, SubCmd.Port, SubCmd.Addr); - - if (SubCmd.Port > 511) { - rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping: Bad port number %d\n", SubCmd.Port); - p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - - if (SubCmd.Rup >= MAX_RUP + LINKS_PER_UNIT) { - p->RIOError.Error = RUP_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - - if (SubCmd.Host >= p->RIONumHosts) { - p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - - port = p->RIOHosts[SubCmd.Host].UnixRups[SubCmd.Rup].BaseSysPort + SubCmd.Port; - PortP = p->RIOPortp[port]; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - - if (RIOPreemptiveCmd(p, PortP, RIOC_READ_REGISTER) == - RIO_FAIL) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER failed\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return -EBUSY; - } else - PortP->State |= RIO_BUSY; - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (copy_to_user(argp, &p->CdRegister, sizeof(unsigned int))) { - rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER copy failed\n"); - p->RIOError.Error = COPYOUT_FAILED; - return -EFAULT; - } - return 0; - /* - ** rio_make_dev: given port number (0-511) ORed with port type - ** (RIO_DEV_DIRECT, RIO_DEV_MODEM, RIO_DEV_XPRINT) return dev_t - ** value to pass to mknod to create the correct device node. - */ - case RIO_MAKE_DEV: - { - unsigned int port = arg & RIO_MODEM_MASK; - unsigned int ret; - - switch (arg & RIO_DEV_MASK) { - case RIO_DEV_DIRECT: - ret = drv_makedev(MAJOR(dev), port); - rio_dprintk(RIO_DEBUG_CTRL, "Makedev direct 0x%x is 0x%x\n", port, ret); - return ret; - case RIO_DEV_MODEM: - ret = drv_makedev(MAJOR(dev), (port | RIO_MODEM_BIT)); - rio_dprintk(RIO_DEBUG_CTRL, "Makedev modem 0x%x is 0x%x\n", port, ret); - return ret; - case RIO_DEV_XPRINT: - ret = drv_makedev(MAJOR(dev), port); - rio_dprintk(RIO_DEBUG_CTRL, "Makedev printer 0x%x is 0x%x\n", port, ret); - return ret; - } - rio_dprintk(RIO_DEBUG_CTRL, "MAKE Device is called\n"); - return -EINVAL; - } - /* - ** rio_minor: given a dev_t from a stat() call, return - ** the port number (0-511) ORed with the port type - ** ( RIO_DEV_DIRECT, RIO_DEV_MODEM, RIO_DEV_XPRINT ) - */ - case RIO_MINOR: - { - dev_t dv; - int mino; - unsigned long ret; - - dv = (dev_t) (arg); - mino = RIO_UNMODEM(dv); - - if (RIO_ISMODEM(dv)) { - rio_dprintk(RIO_DEBUG_CTRL, "Minor for device 0x%x: modem %d\n", dv, mino); - ret = mino | RIO_DEV_MODEM; - } else { - rio_dprintk(RIO_DEBUG_CTRL, "Minor for device 0x%x: direct %d\n", dv, mino); - ret = mino | RIO_DEV_DIRECT; - } - return ret; - } - } - rio_dprintk(RIO_DEBUG_CTRL, "INVALID DAEMON IOCTL 0x%x\n", cmd); - p->RIOError.Error = IOCTL_COMMAND_UNKNOWN; - - func_exit(); - return -EINVAL; -} - -/* -** Pre-emptive commands go on RUPs and are only one byte long. -*/ -int RIOPreemptiveCmd(struct rio_info *p, struct Port *PortP, u8 Cmd) -{ - struct CmdBlk *CmdBlkP; - struct PktCmd_M *PktCmdP; - int Ret; - ushort rup; - int port; - - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_CTRL, "Preemptive command to deleted RTA ignored\n"); - return RIO_FAIL; - } - - if ((PortP->InUse == (typeof(PortP->InUse))-1) || - !(CmdBlkP = RIOGetCmdBlk())) { - rio_dprintk(RIO_DEBUG_CTRL, "Cannot allocate command block " - "for command %d on port %d\n", Cmd, PortP->PortNum); - return RIO_FAIL; - } - - rio_dprintk(RIO_DEBUG_CTRL, "Command blk %p - InUse now %d\n", - CmdBlkP, PortP->InUse); - - PktCmdP = (struct PktCmd_M *)&CmdBlkP->Packet.data[0]; - - CmdBlkP->Packet.src_unit = 0; - if (PortP->SecondBlock) - rup = PortP->ID2; - else - rup = PortP->RupNum; - CmdBlkP->Packet.dest_unit = rup; - CmdBlkP->Packet.src_port = COMMAND_RUP; - CmdBlkP->Packet.dest_port = COMMAND_RUP; - CmdBlkP->Packet.len = PKT_CMD_BIT | 2; - CmdBlkP->PostFuncP = RIOUnUse; - CmdBlkP->PostArg = (unsigned long) PortP; - PktCmdP->Command = Cmd; - port = PortP->HostPort % (ushort) PORTS_PER_RTA; - /* - ** Index ports 8-15 for 2nd block of 16 port RTA. - */ - if (PortP->SecondBlock) - port += (ushort) PORTS_PER_RTA; - PktCmdP->PhbNum = port; - - switch (Cmd) { - case RIOC_MEMDUMP: - rio_dprintk(RIO_DEBUG_CTRL, "Queue MEMDUMP command blk %p " - "(addr 0x%x)\n", CmdBlkP, (int) SubCmd.Addr); - PktCmdP->SubCommand = RIOC_MEMDUMP; - PktCmdP->SubAddr = SubCmd.Addr; - break; - case RIOC_FCLOSE: - rio_dprintk(RIO_DEBUG_CTRL, "Queue FCLOSE command blk %p\n", - CmdBlkP); - break; - case RIOC_READ_REGISTER: - rio_dprintk(RIO_DEBUG_CTRL, "Queue READ_REGISTER (0x%x) " - "command blk %p\n", (int) SubCmd.Addr, CmdBlkP); - PktCmdP->SubCommand = RIOC_READ_REGISTER; - PktCmdP->SubAddr = SubCmd.Addr; - break; - case RIOC_RESUME: - rio_dprintk(RIO_DEBUG_CTRL, "Queue RESUME command blk %p\n", - CmdBlkP); - break; - case RIOC_RFLUSH: - rio_dprintk(RIO_DEBUG_CTRL, "Queue RFLUSH command blk %p\n", - CmdBlkP); - CmdBlkP->PostFuncP = RIORFlushEnable; - break; - case RIOC_SUSPEND: - rio_dprintk(RIO_DEBUG_CTRL, "Queue SUSPEND command blk %p\n", - CmdBlkP); - break; - - case RIOC_MGET: - rio_dprintk(RIO_DEBUG_CTRL, "Queue MGET command blk %p\n", - CmdBlkP); - break; - - case RIOC_MSET: - case RIOC_MBIC: - case RIOC_MBIS: - CmdBlkP->Packet.data[4] = (char) PortP->ModemLines; - rio_dprintk(RIO_DEBUG_CTRL, "Queue MSET/MBIC/MBIS command " - "blk %p\n", CmdBlkP); - break; - - case RIOC_WFLUSH: - /* - ** If we have queued up the maximum number of Write flushes - ** allowed then we should not bother sending any more to the - ** RTA. - */ - if (PortP->WflushFlag == (typeof(PortP->WflushFlag))-1) { - rio_dprintk(RIO_DEBUG_CTRL, "Trashed WFLUSH, " - "WflushFlag about to wrap!"); - RIOFreeCmdBlk(CmdBlkP); - return (RIO_FAIL); - } else { - rio_dprintk(RIO_DEBUG_CTRL, "Queue WFLUSH command " - "blk %p\n", CmdBlkP); - CmdBlkP->PostFuncP = RIOWFlushMark; - } - break; - } - - PortP->InUse++; - - Ret = RIOQueueCmdBlk(PortP->HostP, rup, CmdBlkP); - - return Ret; -} diff --git a/drivers/char/rio/riodrvr.h b/drivers/char/rio/riodrvr.h deleted file mode 100644 index 0907e711b355..000000000000 --- a/drivers/char/rio/riodrvr.h +++ /dev/null @@ -1,138 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : riodrvr.h -** SID : 1.3 -** Last Modified : 11/6/98 09:22:46 -** Retrieved : 11/6/98 09:22:46 -** -** ident @(#)riodrvr.h 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __riodrvr_h -#define __riodrvr_h - -#include /* for HZ */ - -#define MEMDUMP_SIZE 32 -#define MOD_DISABLE (RIO_NOREAD|RIO_NOWRITE|RIO_NOXPRINT) - - -struct rio_info { - int mode; /* Intr or polled, word/byte */ - spinlock_t RIOIntrSem; /* Interrupt thread sem */ - int current_chan; /* current channel */ - int RIOFailed; /* Not initialised ? */ - int RIOInstallAttempts; /* no. of rio-install() calls */ - int RIOLastPCISearch; /* status of last search */ - int RIONumHosts; /* Number of RIO Hosts */ - struct Host *RIOHosts; /* RIO Host values */ - struct Port **RIOPortp; /* RIO port values */ -/* -** 02.03.1999 ARG - ESIL 0820 fix -** We no longer use RIOBootMode -** - int RIOBootMode; * RIO boot mode * -** -*/ - int RIOPrintDisabled; /* RIO printing disabled ? */ - int RIOPrintLogState; /* RIO printing state ? */ - int RIOPolling; /* Polling ? */ -/* -** 09.12.1998 ARG - ESIL 0776 part fix -** The 'RIO_QUICK_CHECK' ioctl was using RIOHalted. -** The fix for this ESIL introduces another member (RIORtaDisCons) here to be -** updated in RIOConCon() - to keep track of RTA connections/disconnections. -** 'RIO_QUICK_CHECK' now returns the value of RIORtaDisCons. -*/ - int RIOHalted; /* halted ? */ - int RIORtaDisCons; /* RTA connections/disconnections */ - unsigned int RIOReadCheck; /* Rio read check */ - unsigned int RIONoMessage; /* To display message or not */ - unsigned int RIONumBootPkts; /* how many packets for an RTA */ - unsigned int RIOBootCount; /* size of RTA code */ - unsigned int RIOBooting; /* count of outstanding boots */ - unsigned int RIOSystemUp; /* Booted ?? */ - unsigned int RIOCounting; /* for counting interrupts */ - unsigned int RIOIntCount; /* # of intr since last check */ - unsigned int RIOTxCount; /* number of xmit intrs */ - unsigned int RIORxCount; /* number of rx intrs */ - unsigned int RIORupCount; /* number of rup intrs */ - int RIXTimer; - int RIOBufferSize; /* Buffersize */ - int RIOBufferMask; /* Buffersize */ - - int RIOFirstMajor; /* First host card's major no */ - - unsigned int RIOLastPortsMapped; /* highest port number known */ - unsigned int RIOFirstPortsMapped; /* lowest port number known */ - - unsigned int RIOLastPortsBooted; /* highest port number running */ - unsigned int RIOFirstPortsBooted; /* lowest port number running */ - - unsigned int RIOLastPortsOpened; /* highest port number running */ - unsigned int RIOFirstPortsOpened; /* lowest port number running */ - - /* Flag to say that the topology information has been changed. */ - unsigned int RIOQuickCheck; - unsigned int CdRegister; /* ??? */ - int RIOSignalProcess; /* Signalling process */ - int rio_debug; /* To debug ... */ - int RIODebugWait; /* For what ??? */ - int tpri; /* Thread prio */ - int tid; /* Thread id */ - unsigned int _RIO_Polled; /* Counter for polling */ - unsigned int _RIO_Interrupted; /* Counter for interrupt */ - int intr_tid; /* iointset return value */ - int TxEnSem; /* TxEnable Semaphore */ - - - struct Error RIOError; /* to Identify what went wrong */ - struct Conf RIOConf; /* Configuration ??? */ - struct ttystatics channel[RIO_PORTS]; /* channel information */ - char RIOBootPackets[1 + (SIXTY_FOUR_K / RTA_BOOT_DATA_SIZE)] - [RTA_BOOT_DATA_SIZE]; - struct Map RIOConnectTable[TOTAL_MAP_ENTRIES]; - struct Map RIOSavedTable[TOTAL_MAP_ENTRIES]; - - /* RTA to host binding table for master/slave operation */ - unsigned long RIOBindTab[MAX_RTA_BINDINGS]; - /* RTA memory dump variable */ - unsigned char RIOMemDump[MEMDUMP_SIZE]; - struct ModuleInfo RIOModuleTypes[MAX_MODULE_TYPES]; - -}; - - -#ifdef linux -#define debug(x) printk x -#else -#define debug(x) kkprintf x -#endif - - - -#define RIO_RESET_INT 0x7d80 - -#endif /* __riodrvr.h */ diff --git a/drivers/char/rio/rioinfo.h b/drivers/char/rio/rioinfo.h deleted file mode 100644 index 42ff1e79d96f..000000000000 --- a/drivers/char/rio/rioinfo.h +++ /dev/null @@ -1,92 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rioinfo.h -** SID : 1.2 -** Last Modified : 11/6/98 14:07:49 -** Retrieved : 11/6/98 14:07:50 -** -** ident @(#)rioinfo.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rioinfo_h -#define __rioinfo_h - -/* -** Host card data structure -*/ -struct RioHostInfo { - long location; /* RIO Card Base I/O address */ - long vector; /* RIO Card IRQ vector */ - int bus; /* ISA/EISA/MCA/PCI */ - int mode; /* pointer to host mode - INTERRUPT / POLLED */ - struct old_sgttyb - *Sg; /* pointer to default term characteristics */ -}; - - -/* Mode in rio device info */ -#define INTERRUPTED_MODE 0x01 /* Interrupt is generated */ -#define POLLED_MODE 0x02 /* No interrupt */ -#define AUTO_MODE 0x03 /* Auto mode */ - -#define WORD_ACCESS_MODE 0x10 /* Word Access Mode */ -#define BYTE_ACCESS_MODE 0x20 /* Byte Access Mode */ - - -/* Bus type that RIO supports */ -#define ISA_BUS 0x01 /* The card is ISA */ -#define EISA_BUS 0x02 /* The card is EISA */ -#define MCA_BUS 0x04 /* The card is MCA */ -#define PCI_BUS 0x08 /* The card is PCI */ - -/* -** 11.11.1998 ARG - ESIL ???? part fix -** Moved definition for 'CHAN' here from rioinfo.c (it is now -** called 'DEF_TERM_CHARACTERISTICS'). -*/ - -#define DEF_TERM_CHARACTERISTICS \ -{ \ - B19200, B19200, /* input and output speed */ \ - 'H' - '@', /* erase char */ \ - -1, /* 2nd erase char */ \ - 'U' - '@', /* kill char */ \ - ECHO | CRMOD, /* mode */ \ - 'C' - '@', /* interrupt character */ \ - '\\' - '@', /* quit char */ \ - 'Q' - '@', /* start char */ \ - 'S' - '@', /* stop char */ \ - 'D' - '@', /* EOF */ \ - -1, /* brk */ \ - (LCRTBS | LCRTERA | LCRTKIL | LCTLECH), /* local mode word */ \ - 'Z' - '@', /* process stop */ \ - 'Y' - '@', /* delayed stop */ \ - 'R' - '@', /* reprint line */ \ - 'O' - '@', /* flush output */ \ - 'W' - '@', /* word erase */ \ - 'V' - '@' /* literal next char */ \ -} - -#endif /* __rioinfo_h */ diff --git a/drivers/char/rio/rioinit.c b/drivers/char/rio/rioinit.c deleted file mode 100644 index 24a282bb89d4..000000000000 --- a/drivers/char/rio/rioinit.c +++ /dev/null @@ -1,421 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rioinit.c -** SID : 1.3 -** Last Modified : 11/6/98 10:33:43 -** Retrieved : 11/6/98 10:33:49 -** -** ident @(#)rioinit.c 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - - -#include "linux_compat.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" -#include "rio_linux.h" - -int RIOPCIinit(struct rio_info *p, int Mode); - -static int RIOScrub(int, u8 __iomem *, int); - - -/** -** RIOAssignAT : -** -** Fill out the fields in the p->RIOHosts structure now we know we know -** we have a board present. -** -** bits < 0 indicates 8 bit operation requested, -** bits > 0 indicates 16 bit operation. -*/ - -int RIOAssignAT(struct rio_info *p, int Base, void __iomem *virtAddr, int mode) -{ - int bits; - struct DpRam __iomem *cardp = (struct DpRam __iomem *)virtAddr; - - if ((Base < ONE_MEG) || (mode & BYTE_ACCESS_MODE)) - bits = BYTE_OPERATION; - else - bits = WORD_OPERATION; - - /* - ** Board has passed its scrub test. Fill in all the - ** transient stuff. - */ - p->RIOHosts[p->RIONumHosts].Caddr = virtAddr; - p->RIOHosts[p->RIONumHosts].CardP = virtAddr; - - /* - ** Revision 01 AT host cards don't support WORD operations, - */ - if (readb(&cardp->DpRevision) == 01) - bits = BYTE_OPERATION; - - p->RIOHosts[p->RIONumHosts].Type = RIO_AT; - p->RIOHosts[p->RIONumHosts].Copy = rio_copy_to_card; - /* set this later */ - p->RIOHosts[p->RIONumHosts].Slot = -1; - p->RIOHosts[p->RIONumHosts].Mode = SLOW_LINKS | SLOW_AT_BUS | bits; - writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE , - &p->RIOHosts[p->RIONumHosts].Control); - writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); - writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE, - &p->RIOHosts[p->RIONumHosts].Control); - writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); - p->RIOHosts[p->RIONumHosts].UniqueNum = - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0])&0xFF)<<0)| - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1])&0xFF)<<8)| - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2])&0xFF)<<16)| - ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3])&0xFF)<<24); - rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Uniquenum 0x%x\n",p->RIOHosts[p->RIONumHosts].UniqueNum); - - p->RIONumHosts++; - rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Tests Passed at 0x%x\n", Base); - return(1); -} - -static u8 val[] = { -#ifdef VERY_LONG_TEST - 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, - 0xa5, 0xff, 0x5a, 0x00, 0xff, 0xc9, 0x36, -#endif - 0xff, 0x00, 0x00 }; - -#define TEST_END sizeof(val) - -/* -** RAM test a board. -** Nothing too complicated, just enough to check it out. -*/ -int RIOBoardTest(unsigned long paddr, void __iomem *caddr, unsigned char type, int slot) -{ - struct DpRam __iomem *DpRam = caddr; - void __iomem *ram[4]; - int size[4]; - int op, bank; - int nbanks; - - rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Reset host type=%d, DpRam=%p, slot=%d\n", - type, DpRam, slot); - - RIOHostReset(type, DpRam, slot); - - /* - ** Scrub the memory. This comes in several banks: - ** DPsram1 - 7000h bytes - ** DPsram2 - 200h bytes - ** DPsram3 - 7000h bytes - ** scratch - 1000h bytes - */ - - rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Setup ram/size arrays\n"); - - size[0] = DP_SRAM1_SIZE; - size[1] = DP_SRAM2_SIZE; - size[2] = DP_SRAM3_SIZE; - size[3] = DP_SCRATCH_SIZE; - - ram[0] = DpRam->DpSram1; - ram[1] = DpRam->DpSram2; - ram[2] = DpRam->DpSram3; - nbanks = (type == RIO_PCI) ? 3 : 4; - if (nbanks == 4) - ram[3] = DpRam->DpScratch; - - - if (nbanks == 3) { - rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Memory: %p(0x%x), %p(0x%x), %p(0x%x)\n", - ram[0], size[0], ram[1], size[1], ram[2], size[2]); - } else { - rio_dprintk (RIO_DEBUG_INIT, "RIO-init: %p(0x%x), %p(0x%x), %p(0x%x), %p(0x%x)\n", - ram[0], size[0], ram[1], size[1], ram[2], size[2], ram[3], size[3]); - } - - /* - ** This scrub operation will test for crosstalk between - ** banks. TEST_END is a magic number, and relates to the offset - ** within the 'val' array used by Scrub. - */ - for (op=0; opMapping[UnitId].Name, "UNKNOWN RTA X-XX", 17); - HostP->Mapping[UnitId].Name[12]='1'+(HostP-p->RIOHosts); - if ((UnitId+1) > 9) { - HostP->Mapping[UnitId].Name[14]='0'+((UnitId+1)/10); - HostP->Mapping[UnitId].Name[15]='0'+((UnitId+1)%10); - } - else { - HostP->Mapping[UnitId].Name[14]='1'+UnitId; - HostP->Mapping[UnitId].Name[15]=0; - } - return 0; -} - -#define RIO_RELEASE "Linux" -#define RELEASE_ID "1.0" - -static struct rioVersion stVersion; - -struct rioVersion *RIOVersid(void) -{ - strlcpy(stVersion.version, "RIO driver for linux V1.0", - sizeof(stVersion.version)); - strlcpy(stVersion.buildDate, __DATE__, - sizeof(stVersion.buildDate)); - - return &stVersion; -} - -void RIOHostReset(unsigned int Type, struct DpRam __iomem *DpRamP, unsigned int Slot) -{ - /* - ** Reset the Tpu - */ - rio_dprintk (RIO_DEBUG_INIT, "RIOHostReset: type 0x%x", Type); - switch ( Type ) { - case RIO_AT: - rio_dprintk (RIO_DEBUG_INIT, " (RIO_AT)\n"); - writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | BYTE_OPERATION | - SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl); - writeb(0xFF, &DpRamP->DpResetTpu); - udelay(3); - rio_dprintk (RIO_DEBUG_INIT, "RIOHostReset: Don't know if it worked. Try reset again\n"); - writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | - BYTE_OPERATION | SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl); - writeb(0xFF, &DpRamP->DpResetTpu); - udelay(3); - break; - case RIO_PCI: - rio_dprintk (RIO_DEBUG_INIT, " (RIO_PCI)\n"); - writeb(RIO_PCI_BOOT_FROM_RAM, &DpRamP->DpControl); - writeb(0xFF, &DpRamP->DpResetInt); - writeb(0xFF, &DpRamP->DpResetTpu); - udelay(100); - break; - default: - rio_dprintk (RIO_DEBUG_INIT, " (UNKNOWN)\n"); - break; - } - return; -} diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c deleted file mode 100644 index 2e71aecae206..000000000000 --- a/drivers/char/rio/riointr.c +++ /dev/null @@ -1,645 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : riointr.c -** SID : 1.2 -** Last Modified : 11/6/98 10:33:44 -** Retrieved : 11/6/98 10:33:49 -** -** ident @(#)riointr.c 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - -#include - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" - - -static void RIOReceive(struct rio_info *, struct Port *); - - -static char *firstchars(char *p, int nch) -{ - static char buf[2][128]; - static int t = 0; - t = !t; - memcpy(buf[t], p, nch); - buf[t][nch] = 0; - return buf[t]; -} - - -#define INCR( P, I ) ((P) = (((P)+(I)) & p->RIOBufferMask)) -/* Enable and start the transmission of packets */ -void RIOTxEnable(char *en) -{ - struct Port *PortP; - struct rio_info *p; - struct tty_struct *tty; - int c; - struct PKT __iomem *PacketP; - unsigned long flags; - - PortP = (struct Port *) en; - p = (struct rio_info *) PortP->p; - tty = PortP->gs.port.tty; - - - rio_dprintk(RIO_DEBUG_INTR, "tx port %d: %d chars queued.\n", PortP->PortNum, PortP->gs.xmit_cnt); - - if (!PortP->gs.xmit_cnt) - return; - - - /* This routine is an order of magnitude simpler than the specialix - version. One of the disadvantages is that this version will send - an incomplete packet (usually 64 bytes instead of 72) once for - every 4k worth of data. Let's just say that this won't influence - performance significantly..... */ - - rio_spin_lock_irqsave(&PortP->portSem, flags); - - while (can_add_transmit(&PacketP, PortP)) { - c = PortP->gs.xmit_cnt; - if (c > PKT_MAX_DATA_LEN) - c = PKT_MAX_DATA_LEN; - - /* Don't copy past the end of the source buffer */ - if (c > SERIAL_XMIT_SIZE - PortP->gs.xmit_tail) - c = SERIAL_XMIT_SIZE - PortP->gs.xmit_tail; - - { - int t; - t = (c > 10) ? 10 : c; - - rio_dprintk(RIO_DEBUG_INTR, "rio: tx port %d: copying %d chars: %s - %s\n", PortP->PortNum, c, firstchars(PortP->gs.xmit_buf + PortP->gs.xmit_tail, t), firstchars(PortP->gs.xmit_buf + PortP->gs.xmit_tail + c - t, t)); - } - /* If for one reason or another, we can't copy more data, - we're done! */ - if (c == 0) - break; - - rio_memcpy_toio(PortP->HostP->Caddr, PacketP->data, PortP->gs.xmit_buf + PortP->gs.xmit_tail, c); - /* udelay (1); */ - - writeb(c, &(PacketP->len)); - if (!(PortP->State & RIO_DELETED)) { - add_transmit(PortP); - /* - ** Count chars tx'd for port statistics reporting - */ - if (PortP->statsGather) - PortP->txchars += c; - } - PortP->gs.xmit_tail = (PortP->gs.xmit_tail + c) & (SERIAL_XMIT_SIZE - 1); - PortP->gs.xmit_cnt -= c; - } - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - - if (PortP->gs.xmit_cnt <= (PortP->gs.wakeup_chars + 2 * PKT_MAX_DATA_LEN)) - tty_wakeup(PortP->gs.port.tty); - -} - - -/* -** RIO Host Service routine. Does all the work traditionally associated with an -** interrupt. -*/ -static int RupIntr; -static int RxIntr; -static int TxIntr; - -void RIOServiceHost(struct rio_info *p, struct Host *HostP) -{ - rio_spin_lock(&HostP->HostLock); - if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { - static int t = 0; - rio_spin_unlock(&HostP->HostLock); - if ((t++ % 200) == 0) - rio_dprintk(RIO_DEBUG_INTR, "Interrupt but host not running. flags=%x.\n", (int) HostP->Flags); - return; - } - rio_spin_unlock(&HostP->HostLock); - - if (readw(&HostP->ParmMapP->rup_intr)) { - writew(0, &HostP->ParmMapP->rup_intr); - p->RIORupCount++; - RupIntr++; - rio_dprintk(RIO_DEBUG_INTR, "rio: RUP interrupt on host %Zd\n", HostP - p->RIOHosts); - RIOPollHostCommands(p, HostP); - } - - if (readw(&HostP->ParmMapP->rx_intr)) { - int port; - - writew(0, &HostP->ParmMapP->rx_intr); - p->RIORxCount++; - RxIntr++; - - rio_dprintk(RIO_DEBUG_INTR, "rio: RX interrupt on host %Zd\n", HostP - p->RIOHosts); - /* - ** Loop through every port. If the port is mapped into - ** the system ( i.e. has /dev/ttyXXXX associated ) then it is - ** worth checking. If the port isn't open, grab any packets - ** hanging on its receive queue and stuff them on the free - ** list; check for commands on the way. - */ - for (port = p->RIOFirstPortsBooted; port < p->RIOLastPortsBooted + PORTS_PER_RTA; port++) { - struct Port *PortP = p->RIOPortp[port]; - struct tty_struct *ttyP; - struct PKT __iomem *PacketP; - - /* - ** not mapped in - most of the RIOPortp[] information - ** has not been set up! - ** Optimise: ports come in bundles of eight. - */ - if (!PortP->Mapped) { - port += 7; - continue; /* with the next port */ - } - - /* - ** If the host board isn't THIS host board, check the next one. - ** optimise: ports come in bundles of eight. - */ - if (PortP->HostP != HostP) { - port += 7; - continue; - } - - /* - ** Let us see - is the port open? If not, then don't service it. - */ - if (!(PortP->PortState & PORT_ISOPEN)) { - continue; - } - - /* - ** find corresponding tty structure. The process of mapping - ** the ports puts these here. - */ - ttyP = PortP->gs.port.tty; - - /* - ** Lock the port before we begin working on it. - */ - rio_spin_lock(&PortP->portSem); - - /* - ** Process received data if there is any. - */ - if (can_remove_receive(&PacketP, PortP)) - RIOReceive(p, PortP); - - /* - ** If there is no data left to be read from the port, and - ** it's handshake bit is set, then we must clear the handshake, - ** so that that downstream RTA is re-enabled. - */ - if (!can_remove_receive(&PacketP, PortP) && (readw(&PortP->PhbP->handshake) == PHB_HANDSHAKE_SET)) { - /* - ** MAGIC! ( Basically, handshake the RX buffer, so that - ** the RTAs upstream can be re-enabled. ) - */ - rio_dprintk(RIO_DEBUG_INTR, "Set RX handshake bit\n"); - writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake); - } - rio_spin_unlock(&PortP->portSem); - } - } - - if (readw(&HostP->ParmMapP->tx_intr)) { - int port; - - writew(0, &HostP->ParmMapP->tx_intr); - - p->RIOTxCount++; - TxIntr++; - rio_dprintk(RIO_DEBUG_INTR, "rio: TX interrupt on host %Zd\n", HostP - p->RIOHosts); - - /* - ** Loop through every port. - ** If the port is mapped into the system ( i.e. has /dev/ttyXXXX - ** associated ) then it is worth checking. - */ - for (port = p->RIOFirstPortsBooted; port < p->RIOLastPortsBooted + PORTS_PER_RTA; port++) { - struct Port *PortP = p->RIOPortp[port]; - struct tty_struct *ttyP; - struct PKT __iomem *PacketP; - - /* - ** not mapped in - most of the RIOPortp[] information - ** has not been set up! - */ - if (!PortP->Mapped) { - port += 7; - continue; /* with the next port */ - } - - /* - ** If the host board isn't running, then its data structures - ** are no use to us - continue quietly. - */ - if (PortP->HostP != HostP) { - port += 7; - continue; /* with the next port */ - } - - /* - ** Let us see - is the port open? If not, then don't service it. - */ - if (!(PortP->PortState & PORT_ISOPEN)) { - continue; - } - - rio_dprintk(RIO_DEBUG_INTR, "rio: Looking into port %d.\n", port); - /* - ** Lock the port before we begin working on it. - */ - rio_spin_lock(&PortP->portSem); - - /* - ** If we can't add anything to the transmit queue, then - ** we need do none of this processing. - */ - if (!can_add_transmit(&PacketP, PortP)) { - rio_dprintk(RIO_DEBUG_INTR, "Can't add to port, so skipping.\n"); - rio_spin_unlock(&PortP->portSem); - continue; - } - - /* - ** find corresponding tty structure. The process of mapping - ** the ports puts these here. - */ - ttyP = PortP->gs.port.tty; - /* If ttyP is NULL, the port is getting closed. Forget about it. */ - if (!ttyP) { - rio_dprintk(RIO_DEBUG_INTR, "no tty, so skipping.\n"); - rio_spin_unlock(&PortP->portSem); - continue; - } - /* - ** If there is more room available we start up the transmit - ** data process again. This can be direct I/O, if the cookmode - ** is set to COOK_RAW or COOK_MEDIUM, or will be a call to the - ** riotproc( T_OUTPUT ) if we are in COOK_WELL mode, to fetch - ** characters via the line discipline. We must always call - ** the line discipline, - ** so that user input characters can be echoed correctly. - ** - ** ++++ Update +++++ - ** With the advent of double buffering, we now see if - ** TxBufferOut-In is non-zero. If so, then we copy a packet - ** to the output place, and set it going. If this empties - ** the buffer, then we must issue a wakeup( ) on OUT. - ** If it frees space in the buffer then we must issue - ** a wakeup( ) on IN. - ** - ** ++++ Extra! Extra! If PortP->WflushFlag is set, then we - ** have to send a WFLUSH command down the PHB, to mark the - ** end point of a WFLUSH. We also need to clear out any - ** data from the double buffer! ( note that WflushFlag is a - ** *count* of the number of WFLUSH commands outstanding! ) - ** - ** ++++ And there's more! - ** If an RTA is powered off, then on again, and rebooted, - ** whilst it has ports open, then we need to re-open the ports. - ** ( reasonable enough ). We can't do this when we spot the - ** re-boot, in interrupt time, because the queue is probably - ** full. So, when we come in here, we need to test if any - ** ports are in this condition, and re-open the port before - ** we try to send any more data to it. Now, the re-booted - ** RTA will be discarding packets from the PHB until it - ** receives this open packet, but don't worry tooo much - ** about that. The one thing that is interesting is the - ** combination of this effect and the WFLUSH effect! - */ - /* For now don't handle RTA reboots. -- REW. - Reenabled. Otherwise RTA reboots didn't work. Duh. -- REW */ - if (PortP->MagicFlags) { - if (PortP->MagicFlags & MAGIC_REBOOT) { - /* - ** well, the RTA has been rebooted, and there is room - ** on its queue to add the open packet that is required. - ** - ** The messy part of this line is trying to decide if - ** we need to call the Param function as a tty or as - ** a modem. - ** DONT USE CLOCAL AS A TEST FOR THIS! - ** - ** If we can't param the port, then move on to the - ** next port. - */ - PortP->InUse = NOT_INUSE; - - rio_spin_unlock(&PortP->portSem); - if (RIOParam(PortP, RIOC_OPEN, ((PortP->Cor2Copy & (RIOC_COR2_RTSFLOW | RIOC_COR2_CTSFLOW)) == (RIOC_COR2_RTSFLOW | RIOC_COR2_CTSFLOW)) ? 1 : 0, DONT_SLEEP) == RIO_FAIL) - continue; /* with next port */ - rio_spin_lock(&PortP->portSem); - PortP->MagicFlags &= ~MAGIC_REBOOT; - } - - /* - ** As mentioned above, this is a tacky hack to cope - ** with WFLUSH - */ - if (PortP->WflushFlag) { - rio_dprintk(RIO_DEBUG_INTR, "Want to WFLUSH mark this port\n"); - - if (PortP->InUse) - rio_dprintk(RIO_DEBUG_INTR, "FAILS - PORT IS IN USE\n"); - } - - while (PortP->WflushFlag && can_add_transmit(&PacketP, PortP) && (PortP->InUse == NOT_INUSE)) { - int p; - struct PktCmd __iomem *PktCmdP; - - rio_dprintk(RIO_DEBUG_INTR, "Add WFLUSH marker to data queue\n"); - /* - ** make it look just like a WFLUSH command - */ - PktCmdP = (struct PktCmd __iomem *) &PacketP->data[0]; - - writeb(RIOC_WFLUSH, &PktCmdP->Command); - - p = PortP->HostPort % (u16) PORTS_PER_RTA; - - /* - ** If second block of ports for 16 port RTA, add 8 - ** to index 8-15. - */ - if (PortP->SecondBlock) - p += PORTS_PER_RTA; - - writeb(p, &PktCmdP->PhbNum); - - /* - ** to make debuggery easier - */ - writeb('W', &PacketP->data[2]); - writeb('F', &PacketP->data[3]); - writeb('L', &PacketP->data[4]); - writeb('U', &PacketP->data[5]); - writeb('S', &PacketP->data[6]); - writeb('H', &PacketP->data[7]); - writeb(' ', &PacketP->data[8]); - writeb('0' + PortP->WflushFlag, &PacketP->data[9]); - writeb(' ', &PacketP->data[10]); - writeb(' ', &PacketP->data[11]); - writeb('\0', &PacketP->data[12]); - - /* - ** its two bytes long! - */ - writeb(PKT_CMD_BIT | 2, &PacketP->len); - - /* - ** queue it! - */ - if (!(PortP->State & RIO_DELETED)) { - add_transmit(PortP); - /* - ** Count chars tx'd for port statistics reporting - */ - if (PortP->statsGather) - PortP->txchars += 2; - } - - if (--(PortP->WflushFlag) == 0) { - PortP->MagicFlags &= ~MAGIC_FLUSH; - } - - rio_dprintk(RIO_DEBUG_INTR, "Wflush count now stands at %d\n", PortP->WflushFlag); - } - if (PortP->MagicFlags & MORE_OUTPUT_EYGOR) { - if (PortP->MagicFlags & MAGIC_FLUSH) { - PortP->MagicFlags |= MORE_OUTPUT_EYGOR; - } else { - if (!can_add_transmit(&PacketP, PortP)) { - rio_spin_unlock(&PortP->portSem); - continue; - } - rio_spin_unlock(&PortP->portSem); - RIOTxEnable((char *) PortP); - rio_spin_lock(&PortP->portSem); - PortP->MagicFlags &= ~MORE_OUTPUT_EYGOR; - } - } - } - - - /* - ** If we can't add anything to the transmit queue, then - ** we need do none of the remaining processing. - */ - if (!can_add_transmit(&PacketP, PortP)) { - rio_spin_unlock(&PortP->portSem); - continue; - } - - rio_spin_unlock(&PortP->portSem); - RIOTxEnable((char *) PortP); - } - } -} - -/* -** Routine for handling received data for tty drivers -*/ -static void RIOReceive(struct rio_info *p, struct Port *PortP) -{ - struct tty_struct *TtyP; - unsigned short transCount; - struct PKT __iomem *PacketP; - register unsigned int DataCnt; - unsigned char __iomem *ptr; - unsigned char *buf; - int copied = 0; - - static int intCount, RxIntCnt; - - /* - ** The receive data process is to remove packets from the - ** PHB until there aren't any more or the current cblock - ** is full. When this occurs, there will be some left over - ** data in the packet, that we must do something with. - ** As we haven't unhooked the packet from the read list - ** yet, we can just leave the packet there, having first - ** made a note of how far we got. This means that we need - ** a pointer per port saying where we start taking the - ** data from - this will normally be zero, but when we - ** run out of space it will be set to the offset of the - ** next byte to copy from the packet data area. The packet - ** length field is decremented by the number of bytes that - ** we successfully removed from the packet. When this reaches - ** zero, we reset the offset pointer to be zero, and free - ** the packet from the front of the queue. - */ - - intCount++; - - TtyP = PortP->gs.port.tty; - if (!TtyP) { - rio_dprintk(RIO_DEBUG_INTR, "RIOReceive: tty is null. \n"); - return; - } - - if (PortP->State & RIO_THROTTLE_RX) { - rio_dprintk(RIO_DEBUG_INTR, "RIOReceive: Throttled. Can't handle more input.\n"); - return; - } - - if (PortP->State & RIO_DELETED) { - while (can_remove_receive(&PacketP, PortP)) { - remove_receive(PortP); - put_free_end(PortP->HostP, PacketP); - } - } else { - /* - ** loop, just so long as: - ** i ) there's some data ( i.e. can_remove_receive ) - ** ii ) we haven't been blocked - ** iii ) there's somewhere to put the data - ** iv ) we haven't outstayed our welcome - */ - transCount = 1; - while (can_remove_receive(&PacketP, PortP) - && transCount) { - RxIntCnt++; - - /* - ** check that it is not a command! - */ - if (readb(&PacketP->len) & PKT_CMD_BIT) { - rio_dprintk(RIO_DEBUG_INTR, "RIO: unexpected command packet received on PHB\n"); - /* rio_dprint(RIO_DEBUG_INTR, (" sysport = %d\n", p->RIOPortp->PortNum)); */ - rio_dprintk(RIO_DEBUG_INTR, " dest_unit = %d\n", readb(&PacketP->dest_unit)); - rio_dprintk(RIO_DEBUG_INTR, " dest_port = %d\n", readb(&PacketP->dest_port)); - rio_dprintk(RIO_DEBUG_INTR, " src_unit = %d\n", readb(&PacketP->src_unit)); - rio_dprintk(RIO_DEBUG_INTR, " src_port = %d\n", readb(&PacketP->src_port)); - rio_dprintk(RIO_DEBUG_INTR, " len = %d\n", readb(&PacketP->len)); - rio_dprintk(RIO_DEBUG_INTR, " control = %d\n", readb(&PacketP->control)); - rio_dprintk(RIO_DEBUG_INTR, " csum = %d\n", readw(&PacketP->csum)); - rio_dprintk(RIO_DEBUG_INTR, " data bytes: "); - for (DataCnt = 0; DataCnt < PKT_MAX_DATA_LEN; DataCnt++) - rio_dprintk(RIO_DEBUG_INTR, "%d\n", readb(&PacketP->data[DataCnt])); - remove_receive(PortP); - put_free_end(PortP->HostP, PacketP); - continue; /* with next packet */ - } - - /* - ** How many characters can we move 'upstream' ? - ** - ** Determine the minimum of the amount of data - ** available and the amount of space in which to - ** put it. - ** - ** 1. Get the packet length by masking 'len' - ** for only the length bits. - ** 2. Available space is [buffer size] - [space used] - ** - ** Transfer count is the minimum of packet length - ** and available space. - */ - - transCount = tty_buffer_request_room(TtyP, readb(&PacketP->len) & PKT_LEN_MASK); - rio_dprintk(RIO_DEBUG_REC, "port %d: Copy %d bytes\n", PortP->PortNum, transCount); - /* - ** To use the following 'kkprintfs' for debugging - change the '#undef' - ** to '#define', (this is the only place ___DEBUG_IT___ occurs in the - ** driver). - */ - ptr = (unsigned char __iomem *) PacketP->data + PortP->RxDataStart; - - tty_prepare_flip_string(TtyP, &buf, transCount); - rio_memcpy_fromio(buf, ptr, transCount); - PortP->RxDataStart += transCount; - writeb(readb(&PacketP->len)-transCount, &PacketP->len); - copied += transCount; - - - - if (readb(&PacketP->len) == 0) { - /* - ** If we have emptied the packet, then we can - ** free it, and reset the start pointer for - ** the next packet. - */ - remove_receive(PortP); - put_free_end(PortP->HostP, PacketP); - PortP->RxDataStart = 0; - } - } - } - if (copied) { - rio_dprintk(RIO_DEBUG_REC, "port %d: pushing tty flip buffer: %d total bytes copied.\n", PortP->PortNum, copied); - tty_flip_buffer_push(TtyP); - } - - return; -} - diff --git a/drivers/char/rio/rioioctl.h b/drivers/char/rio/rioioctl.h deleted file mode 100644 index e8af5b30519e..000000000000 --- a/drivers/char/rio/rioioctl.h +++ /dev/null @@ -1,57 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rioioctl.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:13 -** Retrieved : 11/6/98 11:34:22 -** -** ident @(#)rioioctl.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rioioctl_h__ -#define __rioioctl_h__ - -/* -** RIO device driver - user ioctls and associated structures. -*/ - -struct portStats { - int port; - int gather; - unsigned long txchars; - unsigned long rxchars; - unsigned long opens; - unsigned long closes; - unsigned long ioctls; -}; - -#define RIOC ('R'<<8)|('i'<<16)|('o'<<24) - -#define RIO_QUICK_CHECK (RIOC | 105) -#define RIO_GATHER_PORT_STATS (RIOC | 193) -#define RIO_RESET_PORT_STATS (RIOC | 194) -#define RIO_GET_PORT_STATS (RIOC | 195) - -#endif /* __rioioctl_h__ */ diff --git a/drivers/char/rio/rioparam.c b/drivers/char/rio/rioparam.c deleted file mode 100644 index 6415f3f32a72..000000000000 --- a/drivers/char/rio/rioparam.c +++ /dev/null @@ -1,663 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rioparam.c -** SID : 1.3 -** Last Modified : 11/6/98 10:33:45 -** Retrieved : 11/6/98 10:33:50 -** -** ident @(#)rioparam.c 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" -#include "param.h" - - - -/* -** The Scam, based on email from jeremyr@bugs.specialix.co.uk.... -** -** To send a command on a particular port, you put a packet with the -** command bit set onto the port. The command bit is in the len field, -** and gets ORed in with the actual byte count. -** -** When you send a packet with the command bit set the first -** data byte (data[0]) is interpreted as the command to execute. -** It also governs what data structure overlay should accompany the packet. -** Commands are defined in cirrus/cirrus.h -** -** If you want the command to pre-emt data already on the queue for the -** port, set the pre-emptive bit in conjunction with the command bit. -** It is not defined what will happen if you set the preemptive bit -** on a packet that is NOT a command. -** -** Pre-emptive commands should be queued at the head of the queue using -** add_start(), whereas normal commands and data are enqueued using -** add_end(). -** -** Most commands do not use the remaining bytes in the data array. The -** exceptions are OPEN MOPEN and CONFIG. (NB. As with the SI CONFIG and -** OPEN are currently analogous). With these three commands the following -** 11 data bytes are all used to pass config information such as baud rate etc. -** The fields are also defined in cirrus.h. Some contain straightforward -** information such as the transmit XON character. Two contain the transmit and -** receive baud rates respectively. For most baud rates there is a direct -** mapping between the rates defined in and the byte in the -** packet. There are additional (non UNIX-standard) rates defined in -** /u/dos/rio/cirrus/h/brates.h. -** -** The rest of the data fields contain approximations to the Cirrus registers -** that are used to program number of bits etc. Each registers bit fields is -** defined in cirrus.h. -** -** NB. Only use those bits that are defined as being driver specific -** or common to the RTA and the driver. -** -** All commands going from RTA->Host will be dealt with by the Host code - you -** will never see them. As with the SI there will be three fields to look out -** for in each phb (not yet defined - needs defining a.s.a.p). -** -** modem_status - current state of handshake pins. -** -** port_status - current port status - equivalent to hi_stat for SI, indicates -** if port is IDLE_OPEN, IDLE_CLOSED etc. -** -** break_status - bit X set if break has been received. -** -** Happy hacking. -** -*/ - -/* -** RIOParam is used to open or configure a port. You pass it a PortP, -** which will have a tty struct attached to it. You also pass a command, -** either OPEN or CONFIG. The port's setup is taken from the t_ fields -** of the tty struct inside the PortP, and the port is either opened -** or re-configured. You must also tell RIOParam if the device is a modem -** device or not (i.e. top bit of minor number set or clear - take special -** care when deciding on this!). -** RIOParam neither flushes nor waits for drain, and is NOT preemptive. -** -** RIOParam assumes it will be called at splrio(), and also assumes -** that CookMode is set correctly in the port structure. -** -** NB. for MPX -** tty lock must NOT have been previously acquired. -*/ -int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) -{ - struct tty_struct *TtyP; - int retval; - struct phb_param __iomem *phb_param_ptr; - struct PKT __iomem *PacketP; - int res; - u8 Cor1 = 0, Cor2 = 0, Cor4 = 0, Cor5 = 0; - u8 TxXon = 0, TxXoff = 0, RxXon = 0, RxXoff = 0; - u8 LNext = 0, TxBaud = 0, RxBaud = 0; - int retries = 0xff; - unsigned long flags; - - func_enter(); - - TtyP = PortP->gs.port.tty; - - rio_dprintk(RIO_DEBUG_PARAM, "RIOParam: Port:%d cmd:%d Modem:%d SleepFlag:%d Mapped: %d, tty=%p\n", PortP->PortNum, cmd, Modem, SleepFlag, PortP->Mapped, TtyP); - - if (!TtyP) { - rio_dprintk(RIO_DEBUG_PARAM, "Can't call rioparam with null tty.\n"); - - func_exit(); - - return RIO_FAIL; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - - if (cmd == RIOC_OPEN) { - /* - ** If the port is set to store or lock the parameters, and it is - ** paramed with OPEN, we want to restore the saved port termio, but - ** only if StoredTermio has been saved, i.e. NOT 1st open after reboot. - */ - } - - /* - ** wait for space - */ - while (!(res = can_add_transmit(&PacketP, PortP)) || (PortP->InUse != NOT_INUSE)) { - if (retries-- <= 0) { - break; - } - if (PortP->InUse != NOT_INUSE) { - rio_dprintk(RIO_DEBUG_PARAM, "Port IN_USE for pre-emptive command\n"); - } - - if (!res) { - rio_dprintk(RIO_DEBUG_PARAM, "Port has no space on transmit queue\n"); - } - - if (SleepFlag != OK_TO_SLEEP) { - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - func_exit(); - - return RIO_FAIL; - } - - rio_dprintk(RIO_DEBUG_PARAM, "wait for can_add_transmit\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - retval = RIODelay(PortP, HUNDRED_MS); - rio_spin_lock_irqsave(&PortP->portSem, flags); - if (retval == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_PARAM, "wait for can_add_transmit broken by signal\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - func_exit(); - return -EINTR; - } - if (PortP->State & RIO_DELETED) { - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - func_exit(); - return 0; - } - } - - if (!res) { - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - func_exit(); - - return RIO_FAIL; - } - - rio_dprintk(RIO_DEBUG_PARAM, "can_add_transmit() returns %x\n", res); - rio_dprintk(RIO_DEBUG_PARAM, "Packet is %p\n", PacketP); - - phb_param_ptr = (struct phb_param __iomem *) PacketP->data; - - - switch (TtyP->termios->c_cflag & CSIZE) { - case CS5: - { - rio_dprintk(RIO_DEBUG_PARAM, "5 bit data\n"); - Cor1 |= RIOC_COR1_5BITS; - break; - } - case CS6: - { - rio_dprintk(RIO_DEBUG_PARAM, "6 bit data\n"); - Cor1 |= RIOC_COR1_6BITS; - break; - } - case CS7: - { - rio_dprintk(RIO_DEBUG_PARAM, "7 bit data\n"); - Cor1 |= RIOC_COR1_7BITS; - break; - } - case CS8: - { - rio_dprintk(RIO_DEBUG_PARAM, "8 bit data\n"); - Cor1 |= RIOC_COR1_8BITS; - break; - } - } - - if (TtyP->termios->c_cflag & CSTOPB) { - rio_dprintk(RIO_DEBUG_PARAM, "2 stop bits\n"); - Cor1 |= RIOC_COR1_2STOP; - } else { - rio_dprintk(RIO_DEBUG_PARAM, "1 stop bit\n"); - Cor1 |= RIOC_COR1_1STOP; - } - - if (TtyP->termios->c_cflag & PARENB) { - rio_dprintk(RIO_DEBUG_PARAM, "Enable parity\n"); - Cor1 |= RIOC_COR1_NORMAL; - } else { - rio_dprintk(RIO_DEBUG_PARAM, "Disable parity\n"); - Cor1 |= RIOC_COR1_NOP; - } - if (TtyP->termios->c_cflag & PARODD) { - rio_dprintk(RIO_DEBUG_PARAM, "Odd parity\n"); - Cor1 |= RIOC_COR1_ODD; - } else { - rio_dprintk(RIO_DEBUG_PARAM, "Even parity\n"); - Cor1 |= RIOC_COR1_EVEN; - } - - /* - ** COR 2 - */ - if (TtyP->termios->c_iflag & IXON) { - rio_dprintk(RIO_DEBUG_PARAM, "Enable start/stop output control\n"); - Cor2 |= RIOC_COR2_IXON; - } else { - if (PortP->Config & RIO_IXON) { - rio_dprintk(RIO_DEBUG_PARAM, "Force enable start/stop output control\n"); - Cor2 |= RIOC_COR2_IXON; - } else - rio_dprintk(RIO_DEBUG_PARAM, "IXON has been disabled.\n"); - } - - if (TtyP->termios->c_iflag & IXANY) { - if (PortP->Config & RIO_IXANY) { - rio_dprintk(RIO_DEBUG_PARAM, "Enable any key to restart output\n"); - Cor2 |= RIOC_COR2_IXANY; - } else - rio_dprintk(RIO_DEBUG_PARAM, "IXANY has been disabled due to sanity reasons.\n"); - } - - if (TtyP->termios->c_iflag & IXOFF) { - rio_dprintk(RIO_DEBUG_PARAM, "Enable start/stop input control 2\n"); - Cor2 |= RIOC_COR2_IXOFF; - } - - if (TtyP->termios->c_cflag & HUPCL) { - rio_dprintk(RIO_DEBUG_PARAM, "Hangup on last close\n"); - Cor2 |= RIOC_COR2_HUPCL; - } - - if (C_CRTSCTS(TtyP)) { - rio_dprintk(RIO_DEBUG_PARAM, "Rx hardware flow control enabled\n"); - Cor2 |= RIOC_COR2_CTSFLOW; - Cor2 |= RIOC_COR2_RTSFLOW; - } else { - rio_dprintk(RIO_DEBUG_PARAM, "Rx hardware flow control disabled\n"); - Cor2 &= ~RIOC_COR2_CTSFLOW; - Cor2 &= ~RIOC_COR2_RTSFLOW; - } - - - if (TtyP->termios->c_cflag & CLOCAL) { - rio_dprintk(RIO_DEBUG_PARAM, "Local line\n"); - } else { - rio_dprintk(RIO_DEBUG_PARAM, "Possible Modem line\n"); - } - - /* - ** COR 4 (there is no COR 3) - */ - if (TtyP->termios->c_iflag & IGNBRK) { - rio_dprintk(RIO_DEBUG_PARAM, "Ignore break condition\n"); - Cor4 |= RIOC_COR4_IGNBRK; - } - if (!(TtyP->termios->c_iflag & BRKINT)) { - rio_dprintk(RIO_DEBUG_PARAM, "Break generates NULL condition\n"); - Cor4 |= RIOC_COR4_NBRKINT; - } else { - rio_dprintk(RIO_DEBUG_PARAM, "Interrupt on break condition\n"); - } - - if (TtyP->termios->c_iflag & INLCR) { - rio_dprintk(RIO_DEBUG_PARAM, "Map newline to carriage return on input\n"); - Cor4 |= RIOC_COR4_INLCR; - } - - if (TtyP->termios->c_iflag & IGNCR) { - rio_dprintk(RIO_DEBUG_PARAM, "Ignore carriage return on input\n"); - Cor4 |= RIOC_COR4_IGNCR; - } - - if (TtyP->termios->c_iflag & ICRNL) { - rio_dprintk(RIO_DEBUG_PARAM, "Map carriage return to newline on input\n"); - Cor4 |= RIOC_COR4_ICRNL; - } - if (TtyP->termios->c_iflag & IGNPAR) { - rio_dprintk(RIO_DEBUG_PARAM, "Ignore characters with parity errors\n"); - Cor4 |= RIOC_COR4_IGNPAR; - } - if (TtyP->termios->c_iflag & PARMRK) { - rio_dprintk(RIO_DEBUG_PARAM, "Mark parity errors\n"); - Cor4 |= RIOC_COR4_PARMRK; - } - - /* - ** Set the RAISEMOD flag to ensure that the modem lines are raised - ** on reception of a config packet. - ** The download code handles the zero baud condition. - */ - Cor4 |= RIOC_COR4_RAISEMOD; - - /* - ** COR 5 - */ - - Cor5 = RIOC_COR5_CMOE; - - /* - ** Set to monitor tbusy/tstop (or not). - */ - - if (PortP->MonitorTstate) - Cor5 |= RIOC_COR5_TSTATE_ON; - else - Cor5 |= RIOC_COR5_TSTATE_OFF; - - /* - ** Could set LNE here if you wanted LNext processing. SVR4 will use it. - */ - if (TtyP->termios->c_iflag & ISTRIP) { - rio_dprintk(RIO_DEBUG_PARAM, "Strip input characters\n"); - if (!(PortP->State & RIO_TRIAD_MODE)) { - Cor5 |= RIOC_COR5_ISTRIP; - } - } - - if (TtyP->termios->c_oflag & ONLCR) { - rio_dprintk(RIO_DEBUG_PARAM, "Map newline to carriage-return, newline on output\n"); - if (PortP->CookMode == COOK_MEDIUM) - Cor5 |= RIOC_COR5_ONLCR; - } - if (TtyP->termios->c_oflag & OCRNL) { - rio_dprintk(RIO_DEBUG_PARAM, "Map carriage return to newline on output\n"); - if (PortP->CookMode == COOK_MEDIUM) - Cor5 |= RIOC_COR5_OCRNL; - } - if ((TtyP->termios->c_oflag & TABDLY) == TAB3) { - rio_dprintk(RIO_DEBUG_PARAM, "Tab delay 3 set\n"); - if (PortP->CookMode == COOK_MEDIUM) - Cor5 |= RIOC_COR5_TAB3; - } - - /* - ** Flow control bytes. - */ - TxXon = TtyP->termios->c_cc[VSTART]; - TxXoff = TtyP->termios->c_cc[VSTOP]; - RxXon = TtyP->termios->c_cc[VSTART]; - RxXoff = TtyP->termios->c_cc[VSTOP]; - /* - ** LNEXT byte - */ - LNext = 0; - - /* - ** Baud rate bytes - */ - rio_dprintk(RIO_DEBUG_PARAM, "Mapping of rx/tx baud %x (%x)\n", TtyP->termios->c_cflag, CBAUD); - - switch (TtyP->termios->c_cflag & CBAUD) { -#define e(b) case B ## b : RxBaud = TxBaud = RIO_B ## b ;break - e(50); - e(75); - e(110); - e(134); - e(150); - e(200); - e(300); - e(600); - e(1200); - e(1800); - e(2400); - e(4800); - e(9600); - e(19200); - e(38400); - e(57600); - e(115200); /* e(230400);e(460800); e(921600); */ - } - - rio_dprintk(RIO_DEBUG_PARAM, "tx baud 0x%x, rx baud 0x%x\n", TxBaud, RxBaud); - - - /* - ** Leftovers - */ - if (TtyP->termios->c_cflag & CREAD) - rio_dprintk(RIO_DEBUG_PARAM, "Enable receiver\n"); -#ifdef RCV1EN - if (TtyP->termios->c_cflag & RCV1EN) - rio_dprintk(RIO_DEBUG_PARAM, "RCV1EN (?)\n"); -#endif -#ifdef XMT1EN - if (TtyP->termios->c_cflag & XMT1EN) - rio_dprintk(RIO_DEBUG_PARAM, "XMT1EN (?)\n"); -#endif - if (TtyP->termios->c_lflag & ISIG) - rio_dprintk(RIO_DEBUG_PARAM, "Input character signal generating enabled\n"); - if (TtyP->termios->c_lflag & ICANON) - rio_dprintk(RIO_DEBUG_PARAM, "Canonical input: erase and kill enabled\n"); - if (TtyP->termios->c_lflag & XCASE) - rio_dprintk(RIO_DEBUG_PARAM, "Canonical upper/lower presentation\n"); - if (TtyP->termios->c_lflag & ECHO) - rio_dprintk(RIO_DEBUG_PARAM, "Enable input echo\n"); - if (TtyP->termios->c_lflag & ECHOE) - rio_dprintk(RIO_DEBUG_PARAM, "Enable echo erase\n"); - if (TtyP->termios->c_lflag & ECHOK) - rio_dprintk(RIO_DEBUG_PARAM, "Enable echo kill\n"); - if (TtyP->termios->c_lflag & ECHONL) - rio_dprintk(RIO_DEBUG_PARAM, "Enable echo newline\n"); - if (TtyP->termios->c_lflag & NOFLSH) - rio_dprintk(RIO_DEBUG_PARAM, "Disable flush after interrupt or quit\n"); -#ifdef TOSTOP - if (TtyP->termios->c_lflag & TOSTOP) - rio_dprintk(RIO_DEBUG_PARAM, "Send SIGTTOU for background output\n"); -#endif -#ifdef XCLUDE - if (TtyP->termios->c_lflag & XCLUDE) - rio_dprintk(RIO_DEBUG_PARAM, "Exclusive use of this line\n"); -#endif - if (TtyP->termios->c_iflag & IUCLC) - rio_dprintk(RIO_DEBUG_PARAM, "Map uppercase to lowercase on input\n"); - if (TtyP->termios->c_oflag & OPOST) - rio_dprintk(RIO_DEBUG_PARAM, "Enable output post-processing\n"); - if (TtyP->termios->c_oflag & OLCUC) - rio_dprintk(RIO_DEBUG_PARAM, "Map lowercase to uppercase on output\n"); - if (TtyP->termios->c_oflag & ONOCR) - rio_dprintk(RIO_DEBUG_PARAM, "No carriage return output at column 0\n"); - if (TtyP->termios->c_oflag & ONLRET) - rio_dprintk(RIO_DEBUG_PARAM, "Newline performs carriage return function\n"); - if (TtyP->termios->c_oflag & OFILL) - rio_dprintk(RIO_DEBUG_PARAM, "Use fill characters for delay\n"); - if (TtyP->termios->c_oflag & OFDEL) - rio_dprintk(RIO_DEBUG_PARAM, "Fill character is DEL\n"); - if (TtyP->termios->c_oflag & NLDLY) - rio_dprintk(RIO_DEBUG_PARAM, "Newline delay set\n"); - if (TtyP->termios->c_oflag & CRDLY) - rio_dprintk(RIO_DEBUG_PARAM, "Carriage return delay set\n"); - if (TtyP->termios->c_oflag & TABDLY) - rio_dprintk(RIO_DEBUG_PARAM, "Tab delay set\n"); - /* - ** These things are kind of useful in a later life! - */ - PortP->Cor2Copy = Cor2; - - if (PortP->State & RIO_DELETED) { - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - func_exit(); - - return RIO_FAIL; - } - - /* - ** Actually write the info into the packet to be sent - */ - writeb(cmd, &phb_param_ptr->Cmd); - writeb(Cor1, &phb_param_ptr->Cor1); - writeb(Cor2, &phb_param_ptr->Cor2); - writeb(Cor4, &phb_param_ptr->Cor4); - writeb(Cor5, &phb_param_ptr->Cor5); - writeb(TxXon, &phb_param_ptr->TxXon); - writeb(RxXon, &phb_param_ptr->RxXon); - writeb(TxXoff, &phb_param_ptr->TxXoff); - writeb(RxXoff, &phb_param_ptr->RxXoff); - writeb(LNext, &phb_param_ptr->LNext); - writeb(TxBaud, &phb_param_ptr->TxBaud); - writeb(RxBaud, &phb_param_ptr->RxBaud); - - /* - ** Set the length/command field - */ - writeb(12 | PKT_CMD_BIT, &PacketP->len); - - /* - ** The packet is formed - now, whack it off - ** to its final destination: - */ - add_transmit(PortP); - /* - ** Count characters transmitted for port statistics reporting - */ - if (PortP->statsGather) - PortP->txchars += 12; - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - - rio_dprintk(RIO_DEBUG_PARAM, "add_transmit returned.\n"); - /* - ** job done. - */ - func_exit(); - - return 0; -} - - -/* -** We can add another packet to a transmit queue if the packet pointer pointed -** to by the TxAdd pointer has PKT_IN_USE clear in its address. -*/ -int can_add_transmit(struct PKT __iomem **PktP, struct Port *PortP) -{ - struct PKT __iomem *tp; - - *PktP = tp = (struct PKT __iomem *) RIO_PTR(PortP->Caddr, readw(PortP->TxAdd)); - - return !((unsigned long) tp & PKT_IN_USE); -} - -/* -** To add a packet to the queue, you set the PKT_IN_USE bit in the address, -** and then move the TxAdd pointer along one position to point to the next -** packet pointer. You must wrap the pointer from the end back to the start. -*/ -void add_transmit(struct Port *PortP) -{ - if (readw(PortP->TxAdd) & PKT_IN_USE) { - rio_dprintk(RIO_DEBUG_PARAM, "add_transmit: Packet has been stolen!"); - } - writew(readw(PortP->TxAdd) | PKT_IN_USE, PortP->TxAdd); - PortP->TxAdd = (PortP->TxAdd == PortP->TxEnd) ? PortP->TxStart : PortP->TxAdd + 1; - writew(RIO_OFF(PortP->Caddr, PortP->TxAdd), &PortP->PhbP->tx_add); -} - -/**************************************** - * Put a packet onto the end of the - * free list - ****************************************/ -void put_free_end(struct Host *HostP, struct PKT __iomem *PktP) -{ - struct rio_free_list __iomem *tmp_pointer; - unsigned short old_end, new_end; - unsigned long flags; - - rio_spin_lock_irqsave(&HostP->HostLock, flags); - - /************************************************* - * Put a packet back onto the back of the free list - * - ************************************************/ - - rio_dprintk(RIO_DEBUG_PFE, "put_free_end(PktP=%p)\n", PktP); - - if ((old_end = readw(&HostP->ParmMapP->free_list_end)) != TPNULL) { - new_end = RIO_OFF(HostP->Caddr, PktP); - tmp_pointer = (struct rio_free_list __iomem *) RIO_PTR(HostP->Caddr, old_end); - writew(new_end, &tmp_pointer->next); - writew(old_end, &((struct rio_free_list __iomem *) PktP)->prev); - writew(TPNULL, &((struct rio_free_list __iomem *) PktP)->next); - writew(new_end, &HostP->ParmMapP->free_list_end); - } else { /* First packet on the free list this should never happen! */ - rio_dprintk(RIO_DEBUG_PFE, "put_free_end(): This should never happen\n"); - writew(RIO_OFF(HostP->Caddr, PktP), &HostP->ParmMapP->free_list_end); - tmp_pointer = (struct rio_free_list __iomem *) PktP; - writew(TPNULL, &tmp_pointer->prev); - writew(TPNULL, &tmp_pointer->next); - } - rio_dprintk(RIO_DEBUG_CMD, "Before unlock: %p\n", &HostP->HostLock); - rio_spin_unlock_irqrestore(&HostP->HostLock, flags); -} - -/* -** can_remove_receive(PktP,P) returns non-zero if PKT_IN_USE is set -** for the next packet on the queue. It will also set PktP to point to the -** relevant packet, [having cleared the PKT_IN_USE bit]. If PKT_IN_USE is clear, -** then can_remove_receive() returns 0. -*/ -int can_remove_receive(struct PKT __iomem **PktP, struct Port *PortP) -{ - if (readw(PortP->RxRemove) & PKT_IN_USE) { - *PktP = (struct PKT __iomem *) RIO_PTR(PortP->Caddr, readw(PortP->RxRemove) & ~PKT_IN_USE); - return 1; - } - return 0; -} - -/* -** To remove a packet from the receive queue you clear its PKT_IN_USE bit, -** and then bump the pointers. Once the pointers get to the end, they must -** be wrapped back to the start. -*/ -void remove_receive(struct Port *PortP) -{ - writew(readw(PortP->RxRemove) & ~PKT_IN_USE, PortP->RxRemove); - PortP->RxRemove = (PortP->RxRemove == PortP->RxEnd) ? PortP->RxStart : PortP->RxRemove + 1; - writew(RIO_OFF(PortP->Caddr, PortP->RxRemove), &PortP->PhbP->rx_remove); -} diff --git a/drivers/char/rio/rioroute.c b/drivers/char/rio/rioroute.c deleted file mode 100644 index f9b936ac3394..000000000000 --- a/drivers/char/rio/rioroute.c +++ /dev/null @@ -1,1039 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : rioroute.c -** SID : 1.3 -** Last Modified : 11/6/98 10:33:46 -** Retrieved : 11/6/98 10:33:50 -** -** ident @(#)rioroute.c 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include -#include - -#include -#include - -#include - - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" -#include "param.h" - -static int RIOCheckIsolated(struct rio_info *, struct Host *, unsigned int); -static int RIOIsolate(struct rio_info *, struct Host *, unsigned int); -static int RIOCheck(struct Host *, unsigned int); -static void RIOConCon(struct rio_info *, struct Host *, unsigned int, unsigned int, unsigned int, unsigned int, int); - - -/* -** Incoming on the ROUTE_RUP -** I wrote this while I was tired. Forgive me. -*/ -int RIORouteRup(struct rio_info *p, unsigned int Rup, struct Host *HostP, struct PKT __iomem * PacketP) -{ - struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *) PacketP->data; - struct PktCmd_M *PktReplyP; - struct CmdBlk *CmdBlkP; - struct Port *PortP; - struct Map *MapP; - struct Top *TopP; - int ThisLink, ThisLinkMin, ThisLinkMax; - int port; - int Mod, Mod1, Mod2; - unsigned short RtaType; - unsigned int RtaUniq; - unsigned int ThisUnit, ThisUnit2; /* 2 ids to accommodate 16 port RTA */ - unsigned int OldUnit, NewUnit, OldLink, NewLink; - char *MyType, *MyName; - int Lies; - unsigned long flags; - - /* - ** Is this unit telling us it's current link topology? - */ - if (readb(&PktCmdP->Command) == ROUTE_TOPOLOGY) { - MapP = HostP->Mapping; - - /* - ** The packet can be sent either by the host or by an RTA. - ** If it comes from the host, then we need to fill in the - ** Topology array in the host structure. If it came in - ** from an RTA then we need to fill in the Mapping structure's - ** Topology array for the unit. - */ - if (Rup >= (unsigned short) MAX_RUP) { - ThisUnit = HOST_ID; - TopP = HostP->Topology; - MyType = "Host"; - MyName = HostP->Name; - ThisLinkMin = ThisLinkMax = Rup - MAX_RUP; - } else { - ThisUnit = Rup + 1; - TopP = HostP->Mapping[Rup].Topology; - MyType = "RTA"; - MyName = HostP->Mapping[Rup].Name; - ThisLinkMin = 0; - ThisLinkMax = LINKS_PER_UNIT - 1; - } - - /* - ** Lies will not be tolerated. - ** If any pair of links claim to be connected to the same - ** place, then ignore this packet completely. - */ - Lies = 0; - for (ThisLink = ThisLinkMin + 1; ThisLink <= ThisLinkMax; ThisLink++) { - /* - ** it won't lie about network interconnect, total disconnects - ** and no-IDs. (or at least, it doesn't *matter* if it does) - */ - if (readb(&PktCmdP->RouteTopology[ThisLink].Unit) > (unsigned short) MAX_RUP) - continue; - - for (NewLink = ThisLinkMin; NewLink < ThisLink; NewLink++) { - if ((readb(&PktCmdP->RouteTopology[ThisLink].Unit) == readb(&PktCmdP->RouteTopology[NewLink].Unit)) && (readb(&PktCmdP->RouteTopology[ThisLink].Link) == readb(&PktCmdP->RouteTopology[NewLink].Link))) { - Lies++; - } - } - } - - if (Lies) { - rio_dprintk(RIO_DEBUG_ROUTE, "LIES! DAMN LIES! %d LIES!\n", Lies); - rio_dprintk(RIO_DEBUG_ROUTE, "%d:%c %d:%c %d:%c %d:%c\n", - readb(&PktCmdP->RouteTopology[0].Unit), - 'A' + readb(&PktCmdP->RouteTopology[0].Link), - readb(&PktCmdP->RouteTopology[1].Unit), - 'A' + readb(&PktCmdP->RouteTopology[1].Link), readb(&PktCmdP->RouteTopology[2].Unit), 'A' + readb(&PktCmdP->RouteTopology[2].Link), readb(&PktCmdP->RouteTopology[3].Unit), 'A' + readb(&PktCmdP->RouteTopology[3].Link)); - return 1; - } - - /* - ** now, process each link. - */ - for (ThisLink = ThisLinkMin; ThisLink <= ThisLinkMax; ThisLink++) { - /* - ** this is what it was connected to - */ - OldUnit = TopP[ThisLink].Unit; - OldLink = TopP[ThisLink].Link; - - /* - ** this is what it is now connected to - */ - NewUnit = readb(&PktCmdP->RouteTopology[ThisLink].Unit); - NewLink = readb(&PktCmdP->RouteTopology[ThisLink].Link); - - if (OldUnit != NewUnit || OldLink != NewLink) { - /* - ** something has changed! - */ - - if (NewUnit > MAX_RUP && NewUnit != ROUTE_DISCONNECT && NewUnit != ROUTE_NO_ID && NewUnit != ROUTE_INTERCONNECT) { - rio_dprintk(RIO_DEBUG_ROUTE, "I have a link from %s %s to unit %d:%d - I don't like it.\n", MyType, MyName, NewUnit, NewLink); - } else { - /* - ** put the new values in - */ - TopP[ThisLink].Unit = NewUnit; - TopP[ThisLink].Link = NewLink; - - RIOSetChange(p); - - if (OldUnit <= MAX_RUP) { - /* - ** If something has become bust, then re-enable them messages - */ - if (!p->RIONoMessage) - RIOConCon(p, HostP, ThisUnit, ThisLink, OldUnit, OldLink, DISCONNECT); - } - - if ((NewUnit <= MAX_RUP) && !p->RIONoMessage) - RIOConCon(p, HostP, ThisUnit, ThisLink, NewUnit, NewLink, CONNECT); - - if (NewUnit == ROUTE_NO_ID) - rio_dprintk(RIO_DEBUG_ROUTE, "%s %s (%c) is connected to an unconfigured unit.\n", MyType, MyName, 'A' + ThisLink); - - if (NewUnit == ROUTE_INTERCONNECT) { - if (!p->RIONoMessage) - printk(KERN_DEBUG "rio: %s '%s' (%c) is connected to another network.\n", MyType, MyName, 'A' + ThisLink); - } - - /* - ** perform an update for 'the other end', so that these messages - ** only appears once. Only disconnect the other end if it is pointing - ** at us! - */ - if (OldUnit == HOST_ID) { - if (HostP->Topology[OldLink].Unit == ThisUnit && HostP->Topology[OldLink].Link == ThisLink) { - rio_dprintk(RIO_DEBUG_ROUTE, "SETTING HOST (%c) TO DISCONNECTED!\n", OldLink + 'A'); - HostP->Topology[OldLink].Unit = ROUTE_DISCONNECT; - HostP->Topology[OldLink].Link = NO_LINK; - } else { - rio_dprintk(RIO_DEBUG_ROUTE, "HOST(%c) WAS NOT CONNECTED TO %s (%c)!\n", OldLink + 'A', HostP->Mapping[ThisUnit - 1].Name, ThisLink + 'A'); - } - } else if (OldUnit <= MAX_RUP) { - if (HostP->Mapping[OldUnit - 1].Topology[OldLink].Unit == ThisUnit && HostP->Mapping[OldUnit - 1].Topology[OldLink].Link == ThisLink) { - rio_dprintk(RIO_DEBUG_ROUTE, "SETTING RTA %s (%c) TO DISCONNECTED!\n", HostP->Mapping[OldUnit - 1].Name, OldLink + 'A'); - HostP->Mapping[OldUnit - 1].Topology[OldLink].Unit = ROUTE_DISCONNECT; - HostP->Mapping[OldUnit - 1].Topology[OldLink].Link = NO_LINK; - } else { - rio_dprintk(RIO_DEBUG_ROUTE, "RTA %s (%c) WAS NOT CONNECTED TO %s (%c)\n", HostP->Mapping[OldUnit - 1].Name, OldLink + 'A', HostP->Mapping[ThisUnit - 1].Name, ThisLink + 'A'); - } - } - if (NewUnit == HOST_ID) { - rio_dprintk(RIO_DEBUG_ROUTE, "MARKING HOST (%c) CONNECTED TO %s (%c)\n", NewLink + 'A', MyName, ThisLink + 'A'); - HostP->Topology[NewLink].Unit = ThisUnit; - HostP->Topology[NewLink].Link = ThisLink; - } else if (NewUnit <= MAX_RUP) { - rio_dprintk(RIO_DEBUG_ROUTE, "MARKING RTA %s (%c) CONNECTED TO %s (%c)\n", HostP->Mapping[NewUnit - 1].Name, NewLink + 'A', MyName, ThisLink + 'A'); - HostP->Mapping[NewUnit - 1].Topology[NewLink].Unit = ThisUnit; - HostP->Mapping[NewUnit - 1].Topology[NewLink].Link = ThisLink; - } - } - RIOSetChange(p); - RIOCheckIsolated(p, HostP, OldUnit); - } - } - return 1; - } - - /* - ** The only other command we recognise is a route_request command - */ - if (readb(&PktCmdP->Command) != ROUTE_REQUEST) { - rio_dprintk(RIO_DEBUG_ROUTE, "Unknown command %d received on rup %d host %p ROUTE_RUP\n", readb(&PktCmdP->Command), Rup, HostP); - return 1; - } - - RtaUniq = (readb(&PktCmdP->UniqNum[0])) + (readb(&PktCmdP->UniqNum[1]) << 8) + (readb(&PktCmdP->UniqNum[2]) << 16) + (readb(&PktCmdP->UniqNum[3]) << 24); - - /* - ** Determine if 8 or 16 port RTA - */ - RtaType = GetUnitType(RtaUniq); - - rio_dprintk(RIO_DEBUG_ROUTE, "Received a request for an ID for serial number %x\n", RtaUniq); - - Mod = readb(&PktCmdP->ModuleTypes); - Mod1 = LONYBLE(Mod); - if (RtaType == TYPE_RTA16) { - /* - ** Only one ident is set for a 16 port RTA. To make compatible - ** with 8 port, set 2nd ident in Mod2 to the same as Mod1. - */ - Mod2 = Mod1; - rio_dprintk(RIO_DEBUG_ROUTE, "Backplane type is %s (all ports)\n", p->RIOModuleTypes[Mod1].Name); - } else { - Mod2 = HINYBLE(Mod); - rio_dprintk(RIO_DEBUG_ROUTE, "Module types are %s (ports 0-3) and %s (ports 4-7)\n", p->RIOModuleTypes[Mod1].Name, p->RIOModuleTypes[Mod2].Name); - } - - /* - ** try to unhook a command block from the command free list. - */ - if (!(CmdBlkP = RIOGetCmdBlk())) { - rio_dprintk(RIO_DEBUG_ROUTE, "No command blocks to route RTA! come back later.\n"); - return 0; - } - - /* - ** Fill in the default info on the command block - */ - CmdBlkP->Packet.dest_unit = Rup; - CmdBlkP->Packet.dest_port = ROUTE_RUP; - CmdBlkP->Packet.src_unit = HOST_ID; - CmdBlkP->Packet.src_port = ROUTE_RUP; - CmdBlkP->Packet.len = PKT_CMD_BIT | 1; - CmdBlkP->PreFuncP = CmdBlkP->PostFuncP = NULL; - PktReplyP = (struct PktCmd_M *) CmdBlkP->Packet.data; - - if (!RIOBootOk(p, HostP, RtaUniq)) { - rio_dprintk(RIO_DEBUG_ROUTE, "RTA %x tried to get an ID, but does not belong - FOAD it!\n", RtaUniq); - PktReplyP->Command = ROUTE_FOAD; - memcpy(PktReplyP->CommandText, "RT_FOAD", 7); - RIOQueueCmdBlk(HostP, Rup, CmdBlkP); - return 1; - } - - /* - ** Check to see if the RTA is configured for this host - */ - for (ThisUnit = 0; ThisUnit < MAX_RUP; ThisUnit++) { - rio_dprintk(RIO_DEBUG_ROUTE, "Entry %d Flags=%s %s UniqueNum=0x%x\n", - ThisUnit, HostP->Mapping[ThisUnit].Flags & SLOT_IN_USE ? "Slot-In-Use" : "Not In Use", HostP->Mapping[ThisUnit].Flags & SLOT_TENTATIVE ? "Slot-Tentative" : "Not Tentative", HostP->Mapping[ThisUnit].RtaUniqueNum); - - /* - ** We have an entry for it. - */ - if ((HostP->Mapping[ThisUnit].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) && (HostP->Mapping[ThisUnit].RtaUniqueNum == RtaUniq)) { - if (RtaType == TYPE_RTA16) { - ThisUnit2 = HostP->Mapping[ThisUnit].ID2 - 1; - rio_dprintk(RIO_DEBUG_ROUTE, "Found unit 0x%x at slots %d+%d\n", RtaUniq, ThisUnit, ThisUnit2); - } else - rio_dprintk(RIO_DEBUG_ROUTE, "Found unit 0x%x at slot %d\n", RtaUniq, ThisUnit); - /* - ** If we have no knowledge of booting it, then the host has - ** been re-booted, and so we must kill the RTA, so that it - ** will be booted again (potentially with new bins) - ** and it will then re-ask for an ID, which we will service. - */ - if ((HostP->Mapping[ThisUnit].Flags & SLOT_IN_USE) && !(HostP->Mapping[ThisUnit].Flags & RTA_BOOTED)) { - if (!(HostP->Mapping[ThisUnit].Flags & MSG_DONE)) { - if (!p->RIONoMessage) - printk(KERN_DEBUG "rio: RTA '%s' is being updated.\n", HostP->Mapping[ThisUnit].Name); - HostP->Mapping[ThisUnit].Flags |= MSG_DONE; - } - PktReplyP->Command = ROUTE_FOAD; - memcpy(PktReplyP->CommandText, "RT_FOAD", 7); - RIOQueueCmdBlk(HostP, Rup, CmdBlkP); - return 1; - } - - /* - ** Send the ID (entry) to this RTA. The ID number is implicit as - ** the offset into the table. It is worth noting at this stage - ** that offset zero in the table contains the entries for the - ** RTA with ID 1!!!! - */ - PktReplyP->Command = ROUTE_ALLOCATE; - PktReplyP->IDNum = ThisUnit + 1; - if (RtaType == TYPE_RTA16) { - if (HostP->Mapping[ThisUnit].Flags & SLOT_IN_USE) - /* - ** Adjust the phb and tx pkt dest_units for 2nd block of 8 - ** only if the RTA has ports associated (SLOT_IN_USE) - */ - RIOFixPhbs(p, HostP, ThisUnit2); - PktReplyP->IDNum2 = ThisUnit2 + 1; - rio_dprintk(RIO_DEBUG_ROUTE, "RTA '%s' has been allocated IDs %d+%d\n", HostP->Mapping[ThisUnit].Name, PktReplyP->IDNum, PktReplyP->IDNum2); - } else { - PktReplyP->IDNum2 = ROUTE_NO_ID; - rio_dprintk(RIO_DEBUG_ROUTE, "RTA '%s' has been allocated ID %d\n", HostP->Mapping[ThisUnit].Name, PktReplyP->IDNum); - } - memcpy(PktReplyP->CommandText, "RT_ALLOCAT", 10); - - RIOQueueCmdBlk(HostP, Rup, CmdBlkP); - - /* - ** If this is a freshly booted RTA, then we need to re-open - ** the ports, if any where open, so that data may once more - ** flow around the system! - */ - if ((HostP->Mapping[ThisUnit].Flags & RTA_NEWBOOT) && (HostP->Mapping[ThisUnit].SysPort != NO_PORT)) { - /* - ** look at the ports associated with this beast and - ** see if any where open. If they was, then re-open - ** them, using the info from the tty flags. - */ - for (port = 0; port < PORTS_PER_RTA; port++) { - PortP = p->RIOPortp[port + HostP->Mapping[ThisUnit].SysPort]; - if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) { - rio_dprintk(RIO_DEBUG_ROUTE, "Re-opened this port\n"); - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->MagicFlags |= MAGIC_REBOOT; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - } - } - if (RtaType == TYPE_RTA16) { - for (port = 0; port < PORTS_PER_RTA; port++) { - PortP = p->RIOPortp[port + HostP->Mapping[ThisUnit2].SysPort]; - if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) { - rio_dprintk(RIO_DEBUG_ROUTE, "Re-opened this port\n"); - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->MagicFlags |= MAGIC_REBOOT; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - } - } - } - } - - /* - ** keep a copy of the module types! - */ - HostP->UnixRups[ThisUnit].ModTypes = Mod; - if (RtaType == TYPE_RTA16) - HostP->UnixRups[ThisUnit2].ModTypes = Mod; - - /* - ** If either of the modules on this unit is read-only or write-only - ** or none-xprint, then we need to transfer that info over to the - ** relevant ports. - */ - if (HostP->Mapping[ThisUnit].SysPort != NO_PORT) { - for (port = 0; port < PORTS_PER_MODULE; port++) { - p->RIOPortp[port + HostP->Mapping[ThisUnit].SysPort]->Config &= ~RIO_NOMASK; - p->RIOPortp[port + HostP->Mapping[ThisUnit].SysPort]->Config |= p->RIOModuleTypes[Mod1].Flags[port]; - p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit].SysPort]->Config &= ~RIO_NOMASK; - p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit].SysPort]->Config |= p->RIOModuleTypes[Mod2].Flags[port]; - } - if (RtaType == TYPE_RTA16) { - for (port = 0; port < PORTS_PER_MODULE; port++) { - p->RIOPortp[port + HostP->Mapping[ThisUnit2].SysPort]->Config &= ~RIO_NOMASK; - p->RIOPortp[port + HostP->Mapping[ThisUnit2].SysPort]->Config |= p->RIOModuleTypes[Mod1].Flags[port]; - p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit2].SysPort]->Config &= ~RIO_NOMASK; - p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit2].SysPort]->Config |= p->RIOModuleTypes[Mod2].Flags[port]; - } - } - } - - /* - ** Job done, get on with the interrupts! - */ - return 1; - } - } - /* - ** There is no table entry for this RTA at all. - ** - ** Lets check to see if we actually booted this unit - if not, - ** then we reset it and it will go round the loop of being booted - ** we can then worry about trying to fit it into the table. - */ - for (ThisUnit = 0; ThisUnit < HostP->NumExtraBooted; ThisUnit++) - if (HostP->ExtraUnits[ThisUnit] == RtaUniq) - break; - if (ThisUnit == HostP->NumExtraBooted && ThisUnit != MAX_EXTRA_UNITS) { - /* - ** if the unit wasn't in the table, and the table wasn't full, then - ** we reset the unit, because we didn't boot it. - ** However, if the table is full, it could be that we did boot - ** this unit, and so we won't reboot it, because it isn't really - ** all that disasterous to keep the old bins in most cases. This - ** is a rather tacky feature, but we are on the edge of reallity - ** here, because the implication is that someone has connected - ** 16+MAX_EXTRA_UNITS onto one host. - */ - static int UnknownMesgDone = 0; - - if (!UnknownMesgDone) { - if (!p->RIONoMessage) - printk(KERN_DEBUG "rio: One or more unknown RTAs are being updated.\n"); - UnknownMesgDone = 1; - } - - PktReplyP->Command = ROUTE_FOAD; - memcpy(PktReplyP->CommandText, "RT_FOAD", 7); - } else { - /* - ** we did boot it (as an extra), and there may now be a table - ** slot free (because of a delete), so we will try to make - ** a tentative entry for it, so that the configurator can see it - ** and fill in the details for us. - */ - if (RtaType == TYPE_RTA16) { - if (RIOFindFreeID(p, HostP, &ThisUnit, &ThisUnit2) == 0) { - RIODefaultName(p, HostP, ThisUnit); - rio_fill_host_slot(ThisUnit, ThisUnit2, RtaUniq, HostP); - } - } else { - if (RIOFindFreeID(p, HostP, &ThisUnit, NULL) == 0) { - RIODefaultName(p, HostP, ThisUnit); - rio_fill_host_slot(ThisUnit, 0, RtaUniq, HostP); - } - } - PktReplyP->Command = ROUTE_USED; - memcpy(PktReplyP->CommandText, "RT_USED", 7); - } - RIOQueueCmdBlk(HostP, Rup, CmdBlkP); - return 1; -} - - -void RIOFixPhbs(struct rio_info *p, struct Host *HostP, unsigned int unit) -{ - unsigned short link, port; - struct Port *PortP; - unsigned long flags; - int PortN = HostP->Mapping[unit].SysPort; - - rio_dprintk(RIO_DEBUG_ROUTE, "RIOFixPhbs unit %d sysport %d\n", unit, PortN); - - if (PortN != -1) { - unsigned short dest_unit = HostP->Mapping[unit].ID2; - - /* - ** Get the link number used for the 1st 8 phbs on this unit. - */ - PortP = p->RIOPortp[HostP->Mapping[dest_unit - 1].SysPort]; - - link = readw(&PortP->PhbP->link); - - for (port = 0; port < PORTS_PER_RTA; port++, PortN++) { - unsigned short dest_port = port + 8; - u16 __iomem *TxPktP; - struct PKT __iomem *Pkt; - - PortP = p->RIOPortp[PortN]; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - /* - ** If RTA is not powered on, the tx packets will be - ** unset, so go no further. - */ - if (!PortP->TxStart) { - rio_dprintk(RIO_DEBUG_ROUTE, "Tx pkts not set up yet\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - break; - } - - /* - ** For the second slot of a 16 port RTA, the driver needs to - ** sort out the phb to port mappings. The dest_unit for this - ** group of 8 phbs is set to the dest_unit of the accompanying - ** 8 port block. The dest_port of the second unit is set to - ** be in the range 8-15 (i.e. 8 is added). Thus, for a 16 port - ** RTA with IDs 5 and 6, traffic bound for port 6 of unit 6 - ** (being the second map ID) will be sent to dest_unit 5, port - ** 14. When this RTA is deleted, dest_unit for ID 6 will be - ** restored, and the dest_port will be reduced by 8. - ** Transmit packets also have a destination field which needs - ** adjusting in the same manner. - ** Note that the unit/port bytes in 'dest' are swapped. - ** We also need to adjust the phb and rup link numbers for the - ** second block of 8 ttys. - */ - for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) { - /* - ** *TxPktP is the pointer to the transmit packet on the host - ** card. This needs to be translated into a 32 bit pointer - ** so it can be accessed from the driver. - */ - Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(TxPktP)); - - /* - ** If the packet is used, reset it. - */ - Pkt = (struct PKT __iomem *) ((unsigned long) Pkt & ~PKT_IN_USE); - writeb(dest_unit, &Pkt->dest_unit); - writeb(dest_port, &Pkt->dest_port); - } - rio_dprintk(RIO_DEBUG_ROUTE, "phb dest: Old %x:%x New %x:%x\n", readw(&PortP->PhbP->destination) & 0xff, (readw(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port); - writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination); - writew(link, &PortP->PhbP->link); - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - } - /* - ** Now make sure the range of ports to be serviced includes - ** the 2nd 8 on this 16 port RTA. - */ - if (link > 3) - return; - if (((unit * 8) + 7) > readw(&HostP->LinkStrP[link].last_port)) { - rio_dprintk(RIO_DEBUG_ROUTE, "last port on host link %d: %d\n", link, (unit * 8) + 7); - writew((unit * 8) + 7, &HostP->LinkStrP[link].last_port); - } - } -} - -/* -** Check to see if the new disconnection has isolated this unit. -** If it has, then invalidate all its link information, and tell -** the world about it. This is done to ensure that the configurator -** only gets up-to-date information about what is going on. -*/ -static int RIOCheckIsolated(struct rio_info *p, struct Host *HostP, unsigned int UnitId) -{ - unsigned long flags; - rio_spin_lock_irqsave(&HostP->HostLock, flags); - - if (RIOCheck(HostP, UnitId)) { - rio_dprintk(RIO_DEBUG_ROUTE, "Unit %d is NOT isolated\n", UnitId); - rio_spin_unlock_irqrestore(&HostP->HostLock, flags); - return (0); - } - - RIOIsolate(p, HostP, UnitId); - RIOSetChange(p); - rio_spin_unlock_irqrestore(&HostP->HostLock, flags); - return 1; -} - -/* -** Invalidate all the link interconnectivity of this unit, and of -** all the units attached to it. This will mean that the entire -** subnet will re-introduce itself. -*/ -static int RIOIsolate(struct rio_info *p, struct Host *HostP, unsigned int UnitId) -{ - unsigned int link, unit; - - UnitId--; /* this trick relies on the Unit Id being UNSIGNED! */ - - if (UnitId >= MAX_RUP) /* dontcha just lurv unsigned maths! */ - return (0); - - if (HostP->Mapping[UnitId].Flags & BEEN_HERE) - return (0); - - HostP->Mapping[UnitId].Flags |= BEEN_HERE; - - if (p->RIOPrintDisabled == DO_PRINT) - rio_dprintk(RIO_DEBUG_ROUTE, "RIOMesgIsolated %s", HostP->Mapping[UnitId].Name); - - for (link = 0; link < LINKS_PER_UNIT; link++) { - unit = HostP->Mapping[UnitId].Topology[link].Unit; - HostP->Mapping[UnitId].Topology[link].Unit = ROUTE_DISCONNECT; - HostP->Mapping[UnitId].Topology[link].Link = NO_LINK; - RIOIsolate(p, HostP, unit); - } - HostP->Mapping[UnitId].Flags &= ~BEEN_HERE; - return 1; -} - -static int RIOCheck(struct Host *HostP, unsigned int UnitId) -{ - unsigned char link; - -/* rio_dprint(RIO_DEBUG_ROUTE, ("Check to see if unit %d has a route to the host\n",UnitId)); */ - rio_dprintk(RIO_DEBUG_ROUTE, "RIOCheck : UnitID = %d\n", UnitId); - - if (UnitId == HOST_ID) { - /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d is NOT isolated - it IS the host!\n", UnitId)); */ - return 1; - } - - UnitId--; - - if (UnitId >= MAX_RUP) { - /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d - ignored.\n", UnitId)); */ - return 0; - } - - for (link = 0; link < LINKS_PER_UNIT; link++) { - if (HostP->Mapping[UnitId].Topology[link].Unit == HOST_ID) { - /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d is connected directly to host via link (%c).\n", - UnitId, 'A'+link)); */ - return 1; - } - } - - if (HostP->Mapping[UnitId].Flags & BEEN_HERE) { - /* rio_dprint(RIO_DEBUG_ROUTE, ("Been to Unit %d before - ignoring\n", UnitId)); */ - return 0; - } - - HostP->Mapping[UnitId].Flags |= BEEN_HERE; - - for (link = 0; link < LINKS_PER_UNIT; link++) { - /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d check link (%c)\n", UnitId,'A'+link)); */ - if (RIOCheck(HostP, HostP->Mapping[UnitId].Topology[link].Unit)) { - /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d is connected to something that knows the host via link (%c)\n", UnitId,link+'A')); */ - HostP->Mapping[UnitId].Flags &= ~BEEN_HERE; - return 1; - } - } - - HostP->Mapping[UnitId].Flags &= ~BEEN_HERE; - - /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d DOESNT KNOW THE HOST!\n", UnitId)); */ - - return 0; -} - -/* -** Returns the type of unit (host, 16/8 port RTA) -*/ - -unsigned int GetUnitType(unsigned int Uniq) -{ - switch ((Uniq >> 28) & 0xf) { - case RIO_AT: - case RIO_MCA: - case RIO_EISA: - case RIO_PCI: - rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: Host\n"); - return (TYPE_HOST); - case RIO_RTA_16: - rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: 16 port RTA\n"); - return (TYPE_RTA16); - case RIO_RTA: - rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: 8 port RTA\n"); - return (TYPE_RTA8); - default: - rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: Unrecognised\n"); - return (99); - } -} - -int RIOSetChange(struct rio_info *p) -{ - if (p->RIOQuickCheck != NOT_CHANGED) - return (0); - p->RIOQuickCheck = CHANGED; - if (p->RIOSignalProcess) { - rio_dprintk(RIO_DEBUG_ROUTE, "Send SIG-HUP"); - /* - psignal( RIOSignalProcess, SIGHUP ); - */ - } - return (0); -} - -static void RIOConCon(struct rio_info *p, - struct Host *HostP, - unsigned int FromId, - unsigned int FromLink, - unsigned int ToId, - unsigned int ToLink, - int Change) -{ - char *FromName; - char *FromType; - char *ToName; - char *ToType; - unsigned int tp; - -/* -** 15.10.1998 ARG - ESIL 0759 -** (Part) fix for port being trashed when opened whilst RTA "disconnected" -** -** What's this doing in here anyway ? -** It was causing the port to be 'unmapped' if opened whilst RTA "disconnected" -** -** 09.12.1998 ARG - ESIL 0776 - part fix -** Okay, We've found out what this was all about now ! -** Someone had botched this to use RIOHalted to indicated the number of RTAs -** 'disconnected'. The value in RIOHalted was then being used in the -** 'RIO_QUICK_CHECK' ioctl. A none zero value indicating that a least one RTA -** is 'disconnected'. The change was put in to satisfy a customer's needs. -** Having taken this bit of code out 'RIO_QUICK_CHECK' now no longer works for -** the customer. -** - if (Change == CONNECT) { - if (p->RIOHalted) p->RIOHalted --; - } - else { - p->RIOHalted ++; - } -** -** So - we need to implement it slightly differently - a new member of the -** rio_info struct - RIORtaDisCons (RIO RTA connections) keeps track of RTA -** connections and disconnections. -*/ - if (Change == CONNECT) { - if (p->RIORtaDisCons) - p->RIORtaDisCons--; - } else { - p->RIORtaDisCons++; - } - - if (p->RIOPrintDisabled == DONT_PRINT) - return; - - if (FromId > ToId) { - tp = FromId; - FromId = ToId; - ToId = tp; - tp = FromLink; - FromLink = ToLink; - ToLink = tp; - } - - FromName = FromId ? HostP->Mapping[FromId - 1].Name : HostP->Name; - FromType = FromId ? "RTA" : "HOST"; - ToName = ToId ? HostP->Mapping[ToId - 1].Name : HostP->Name; - ToType = ToId ? "RTA" : "HOST"; - - rio_dprintk(RIO_DEBUG_ROUTE, "Link between %s '%s' (%c) and %s '%s' (%c) %s.\n", FromType, FromName, 'A' + FromLink, ToType, ToName, 'A' + ToLink, (Change == CONNECT) ? "established" : "disconnected"); - printk(KERN_DEBUG "rio: Link between %s '%s' (%c) and %s '%s' (%c) %s.\n", FromType, FromName, 'A' + FromLink, ToType, ToName, 'A' + ToLink, (Change == CONNECT) ? "established" : "disconnected"); -} - -/* -** RIORemoveFromSavedTable : -** -** Delete and RTA entry from the saved table given to us -** by the configuration program. -*/ -static int RIORemoveFromSavedTable(struct rio_info *p, struct Map *pMap) -{ - int entry; - - /* - ** We loop for all entries even after finding an entry and - ** zeroing it because we may have two entries to delete if - ** it's a 16 port RTA. - */ - for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) { - if (p->RIOSavedTable[entry].RtaUniqueNum == pMap->RtaUniqueNum) { - memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map)); - } - } - return 0; -} - - -/* -** RIOCheckDisconnected : -** -** Scan the unit links to and return zero if the unit is completely -** disconnected. -*/ -static int RIOFreeDisconnected(struct rio_info *p, struct Host *HostP, int unit) -{ - int link; - - - rio_dprintk(RIO_DEBUG_ROUTE, "RIOFreeDisconnect unit %d\n", unit); - /* - ** If the slot is tentative and does not belong to the - ** second half of a 16 port RTA then scan to see if - ** is disconnected. - */ - for (link = 0; link < LINKS_PER_UNIT; link++) { - if (HostP->Mapping[unit].Topology[link].Unit != ROUTE_DISCONNECT) - break; - } - - /* - ** If not all links are disconnected then we can forget about it. - */ - if (link < LINKS_PER_UNIT) - return 1; - -#ifdef NEED_TO_FIX_THIS - /* Ok so all the links are disconnected. But we may have only just - ** made this slot tentative and not yet received a topology update. - ** Lets check how long ago we made it tentative. - */ - rio_dprintk(RIO_DEBUG_ROUTE, "Just about to check LBOLT on entry %d\n", unit); - if (drv_getparm(LBOLT, (ulong_t *) & current_time)) - rio_dprintk(RIO_DEBUG_ROUTE, "drv_getparm(LBOLT,....) Failed.\n"); - - elapse_time = current_time - TentTime[unit]; - rio_dprintk(RIO_DEBUG_ROUTE, "elapse %d = current %d - tent %d (%d usec)\n", elapse_time, current_time, TentTime[unit], drv_hztousec(elapse_time)); - if (drv_hztousec(elapse_time) < WAIT_TO_FINISH) { - rio_dprintk(RIO_DEBUG_ROUTE, "Skipping slot %d, not timed out yet %d\n", unit, drv_hztousec(elapse_time)); - return 1; - } -#endif - - /* - ** We have found an usable slot. - ** If it is half of a 16 port RTA then delete the other half. - */ - if (HostP->Mapping[unit].ID2 != 0) { - int nOther = (HostP->Mapping[unit].ID2) - 1; - - rio_dprintk(RIO_DEBUG_ROUTE, "RioFreedis second slot %d.\n", nOther); - memset(&HostP->Mapping[nOther], 0, sizeof(struct Map)); - } - RIORemoveFromSavedTable(p, &HostP->Mapping[unit]); - - return 0; -} - - -/* -** RIOFindFreeID : -** -** This function scans the given host table for either one -** or two free unit ID's. -*/ - -int RIOFindFreeID(struct rio_info *p, struct Host *HostP, unsigned int * pID1, unsigned int * pID2) -{ - int unit, tempID; - - /* - ** Initialise the ID's to MAX_RUP. - ** We do this to make the loop for setting the ID's as simple as - ** possible. - */ - *pID1 = MAX_RUP; - if (pID2 != NULL) - *pID2 = MAX_RUP; - - /* - ** Scan all entries of the host mapping table for free slots. - ** We scan for free slots first and then if that is not successful - ** we start all over again looking for tentative slots we can re-use. - */ - for (unit = 0; unit < MAX_RUP; unit++) { - rio_dprintk(RIO_DEBUG_ROUTE, "Scanning unit %d\n", unit); - /* - ** If the flags are zero then the slot is empty. - */ - if (HostP->Mapping[unit].Flags == 0) { - rio_dprintk(RIO_DEBUG_ROUTE, " This slot is empty.\n"); - /* - ** If we haven't allocated the first ID then do it now. - */ - if (*pID1 == MAX_RUP) { - rio_dprintk(RIO_DEBUG_ROUTE, "Make tentative entry for first unit %d\n", unit); - *pID1 = unit; - - /* - ** If the second ID is not needed then we can return - ** now. - */ - if (pID2 == NULL) - return 0; - } else { - /* - ** Allocate the second slot and return. - */ - rio_dprintk(RIO_DEBUG_ROUTE, "Make tentative entry for second unit %d\n", unit); - *pID2 = unit; - return 0; - } - } - } - - /* - ** If we manage to come out of the free slot loop then we - ** need to start all over again looking for tentative slots - ** that we can re-use. - */ - rio_dprintk(RIO_DEBUG_ROUTE, "Starting to scan for tentative slots\n"); - for (unit = 0; unit < MAX_RUP; unit++) { - if (((HostP->Mapping[unit].Flags & SLOT_TENTATIVE) || (HostP->Mapping[unit].Flags == 0)) && !(HostP->Mapping[unit].Flags & RTA16_SECOND_SLOT)) { - rio_dprintk(RIO_DEBUG_ROUTE, " Slot %d looks promising.\n", unit); - - if (unit == *pID1) { - rio_dprintk(RIO_DEBUG_ROUTE, " No it isn't, its the 1st half\n"); - continue; - } - - /* - ** Slot is Tentative or Empty, but not a tentative second - ** slot of a 16 porter. - ** Attempt to free up this slot (and its parnter if - ** it is a 16 port slot. The second slot will become - ** empty after a call to RIOFreeDisconnected so thats why - ** we look for empty slots above as well). - */ - if (HostP->Mapping[unit].Flags != 0) - if (RIOFreeDisconnected(p, HostP, unit) != 0) - continue; - /* - ** If we haven't allocated the first ID then do it now. - */ - if (*pID1 == MAX_RUP) { - rio_dprintk(RIO_DEBUG_ROUTE, "Grab tentative entry for first unit %d\n", unit); - *pID1 = unit; - - /* - ** Clear out this slot now that we intend to use it. - */ - memset(&HostP->Mapping[unit], 0, sizeof(struct Map)); - - /* - ** If the second ID is not needed then we can return - ** now. - */ - if (pID2 == NULL) - return 0; - } else { - /* - ** Allocate the second slot and return. - */ - rio_dprintk(RIO_DEBUG_ROUTE, "Grab tentative/empty entry for second unit %d\n", unit); - *pID2 = unit; - - /* - ** Clear out this slot now that we intend to use it. - */ - memset(&HostP->Mapping[unit], 0, sizeof(struct Map)); - - /* At this point under the right(wrong?) conditions - ** we may have a first unit ID being higher than the - ** second unit ID. This is a bad idea if we are about - ** to fill the slots with a 16 port RTA. - ** Better check and swap them over. - */ - - if (*pID1 > *pID2) { - rio_dprintk(RIO_DEBUG_ROUTE, "Swapping IDS %d %d\n", *pID1, *pID2); - tempID = *pID1; - *pID1 = *pID2; - *pID2 = tempID; - } - return 0; - } - } - } - - /* - ** If we manage to get to the end of the second loop then we - ** can give up and return a failure. - */ - return 1; -} - - -/* -** The link switch scenario. -** -** Rta Wun (A) is connected to Tuw (A). -** The tables are all up to date, and the system is OK. -** -** If Wun (A) is now moved to Wun (B) before Wun (A) can -** become disconnected, then the follow happens: -** -** Tuw (A) spots the change of unit:link at the other end -** of its link and Tuw sends a topology packet reflecting -** the change: Tuw (A) now disconnected from Wun (A), and -** this is closely followed by a packet indicating that -** Tuw (A) is now connected to Wun (B). -** -** Wun (B) will spot that it has now become connected, and -** Wun will send a topology packet, which indicates that -** both Wun (A) and Wun (B) is connected to Tuw (A). -** -** Eventually Wun (A) realises that it is now disconnected -** and Wun will send out a topology packet indicating that -** Wun (A) is now disconnected. -*/ diff --git a/drivers/char/rio/riospace.h b/drivers/char/rio/riospace.h deleted file mode 100644 index ffb31d4332b9..000000000000 --- a/drivers/char/rio/riospace.h +++ /dev/null @@ -1,154 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : riospace.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:13 -** Retrieved : 11/6/98 11:34:22 -** -** ident @(#)riospace.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_riospace_h__ -#define __rio_riospace_h__ - -#define RIO_LOCATOR_LEN 16 -#define MAX_RIO_BOARDS 4 - -/* -** DONT change this file. At all. Unless you can rebuild the entire -** device driver, which you probably can't, then the rest of the -** driver won't see any changes you make here. So don't make any. -** In particular, it won't be able to see changes to RIO_SLOTS -*/ - -struct Conf { - char Locator[24]; - unsigned int StartupTime; - unsigned int SlowCook; - unsigned int IntrPollTime; - unsigned int BreakInterval; - unsigned int Timer; - unsigned int RtaLoadBase; - unsigned int HostLoadBase; - unsigned int XpHz; - unsigned int XpCps; - char *XpOn; - char *XpOff; - unsigned int MaxXpCps; - unsigned int MinXpCps; - unsigned int SpinCmds; - unsigned int FirstAddr; - unsigned int LastAddr; - unsigned int BufferSize; - unsigned int LowWater; - unsigned int LineLength; - unsigned int CmdTime; -}; - -/* -** Board types - these MUST correspond to product codes! -*/ -#define RIO_EMPTY 0x0 -#define RIO_EISA 0x3 -#define RIO_RTA_16 0x9 -#define RIO_AT 0xA -#define RIO_MCA 0xB -#define RIO_PCI 0xD -#define RIO_RTA 0xE - -/* -** Board data structure. This is used for configuration info -*/ -struct Brd { - unsigned char Type; /* RIO_EISA, RIO_MCA, RIO_AT, RIO_EMPTY... */ - unsigned char Ivec; /* POLLED or ivec number */ - unsigned char Mode; /* Control stuff, see below */ -}; - -struct Board { - char Locator[RIO_LOCATOR_LEN]; - int NumSlots; - struct Brd Boards[MAX_RIO_BOARDS]; -}; - -#define BOOT_FROM_LINK 0x00 -#define BOOT_FROM_RAM 0x01 -#define EXTERNAL_BUS_OFF 0x00 -#define EXTERNAL_BUS_ON 0x02 -#define INTERRUPT_DISABLE 0x00 -#define INTERRUPT_ENABLE 0x04 -#define BYTE_OPERATION 0x00 -#define WORD_OPERATION 0x08 -#define POLLED INTERRUPT_DISABLE -#define IRQ_15 (0x00 | INTERRUPT_ENABLE) -#define IRQ_12 (0x10 | INTERRUPT_ENABLE) -#define IRQ_11 (0x20 | INTERRUPT_ENABLE) -#define IRQ_9 (0x30 | INTERRUPT_ENABLE) -#define SLOW_LINKS 0x00 -#define FAST_LINKS 0x40 -#define SLOW_AT_BUS 0x00 -#define FAST_AT_BUS 0x80 -#define SLOW_PCI_TP 0x00 -#define FAST_PCI_TP 0x80 -/* -** Debug levels -*/ -#define DBG_NONE 0x00000000 - -#define DBG_INIT 0x00000001 -#define DBG_OPEN 0x00000002 -#define DBG_CLOSE 0x00000004 -#define DBG_IOCTL 0x00000008 - -#define DBG_READ 0x00000010 -#define DBG_WRITE 0x00000020 -#define DBG_INTR 0x00000040 -#define DBG_PROC 0x00000080 - -#define DBG_PARAM 0x00000100 -#define DBG_CMD 0x00000200 -#define DBG_XPRINT 0x00000400 -#define DBG_POLL 0x00000800 - -#define DBG_DAEMON 0x00001000 -#define DBG_FAIL 0x00002000 -#define DBG_MODEM 0x00004000 -#define DBG_LIST 0x00008000 - -#define DBG_ROUTE 0x00010000 -#define DBG_UTIL 0x00020000 -#define DBG_BOOT 0x00040000 -#define DBG_BUFFER 0x00080000 - -#define DBG_MON 0x00100000 -#define DBG_SPECIAL 0x00200000 -#define DBG_VPIX 0x00400000 -#define DBG_FLUSH 0x00800000 - -#define DBG_QENABLE 0x01000000 - -#define DBG_ALWAYS 0x80000000 - -#endif /* __rio_riospace_h__ */ diff --git a/drivers/char/rio/riotable.c b/drivers/char/rio/riotable.c deleted file mode 100644 index 3d15802dc0f3..000000000000 --- a/drivers/char/rio/riotable.c +++ /dev/null @@ -1,941 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : riotable.c -** SID : 1.2 -** Last Modified : 11/6/98 10:33:47 -** Retrieved : 11/6/98 10:33:50 -** -** ident @(#)riotable.c 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#include -#include -#include -#include -#include - -#include -#include -#include -#include - -#include -#include - -#include - - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" -#include "param.h" -#include "protsts.h" - -/* -** A configuration table has been loaded. It is now up to us -** to sort it out and use the information contained therein. -*/ -int RIONewTable(struct rio_info *p) -{ - int Host, Host1, Host2, NameIsUnique, Entry, SubEnt; - struct Map *MapP; - struct Map *HostMapP; - struct Host *HostP; - - char *cptr; - - /* - ** We have been sent a new table to install. We need to break - ** it down into little bits and spread it around a bit to see - ** what we have got. - */ - /* - ** Things to check: - ** (things marked 'xx' aren't checked any more!) - ** (1) That there are no booted Hosts/RTAs out there. - ** (2) That the names are properly formed - ** (3) That blank entries really are. - ** xx (4) That hosts mentioned in the table actually exist. xx - ** (5) That the IDs are unique (per host). - ** (6) That host IDs are zero - ** (7) That port numbers are valid - ** (8) That port numbers aren't duplicated - ** (9) That names aren't duplicated - ** xx (10) That hosts that actually exist are mentioned in the table. xx - */ - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n"); - if (p->RIOSystemUp) { /* (1) */ - p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED; - return -EBUSY; - } - - p->RIOError.Error = NOTHING_WRONG_AT_ALL; - p->RIOError.Entry = -1; - p->RIOError.Other = -1; - - for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) { - MapP = &p->RIOConnectTable[Entry]; - if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) { - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n"); - cptr = MapP->Name; /* (2) */ - cptr[MAX_NAME_LEN - 1] = '\0'; - if (cptr[0] == '\0') { - memcpy(MapP->Name, MapP->RtaUniqueNum ? "RTA NN" : "HOST NN", 8); - MapP->Name[5] = '0' + Entry / 10; - MapP->Name[6] = '0' + Entry % 10; - } - while (*cptr) { - if (*cptr < ' ' || *cptr > '~') { - p->RIOError.Error = BAD_CHARACTER_IN_NAME; - p->RIOError.Entry = Entry; - return -ENXIO; - } - cptr++; - } - } - - /* - ** If the entry saved was a tentative entry then just forget - ** about it. - */ - if (MapP->Flags & SLOT_TENTATIVE) { - MapP->HostUniqueNum = 0; - MapP->RtaUniqueNum = 0; - continue; - } - - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n"); - if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) { /* (3) */ - if (MapP->ID || MapP->SysPort || MapP->Flags) { - rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name); - p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL; - p->RIOError.Entry = Entry; - return -ENXIO; - } - rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n"); - continue; - } - - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n"); - for (Host = 0; Host < p->RIONumHosts; Host++) { /* (4) */ - if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) { - HostP = &p->RIOHosts[Host]; - /* - ** having done the lookup, we don't really want to do - ** it again, so hang the host number in a safe place - */ - MapP->Topology[0].Unit = Host; - break; - } - } - - if (Host >= p->RIONumHosts) { - rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum); - MapP->HostUniqueNum = 0; - /* MapP->RtaUniqueNum = 0; */ - /* MapP->ID = 0; */ - /* MapP->Flags = 0; */ - /* MapP->SysPort = 0; */ - /* MapP->Name[0] = 0; */ - continue; - } - - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n"); - if (MapP->RtaUniqueNum) { /* (5) */ - if (!MapP->ID) { - rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name); - p->RIOError.Error = ZERO_RTA_ID; - p->RIOError.Entry = Entry; - return -ENXIO; - } - if (MapP->ID > MAX_RUP) { - rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID); - p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE; - p->RIOError.Entry = Entry; - return -ENXIO; - } - for (SubEnt = 0; SubEnt < Entry; SubEnt++) { - if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) { - rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name); - p->RIOError.Error = DUPLICATED_RTA_ID; - p->RIOError.Entry = Entry; - p->RIOError.Other = SubEnt; - return -ENXIO; - } - /* - ** If the RtaUniqueNum is the same, it may be looking at both - ** entries for a 16 port RTA, so check the ids - */ - if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum) - && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) { - rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name); - rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name); - p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER; - p->RIOError.Entry = Entry; - p->RIOError.Other = SubEnt; - return -ENXIO; - } - } - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n"); - /* (7a) */ - if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) { - rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d-RTA %s is not a multiple of %d!\n", (int) MapP->SysPort, MapP->Name, PORTS_PER_RTA); - p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; - p->RIOError.Entry = Entry; - return -ENXIO; - } - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n"); - /* (7b) */ - if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) { - rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name); - p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; - p->RIOError.Entry = Entry; - return -ENXIO; - } - for (SubEnt = 0; SubEnt < Entry; SubEnt++) { - if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT) - continue; - if (p->RIOConnectTable[SubEnt].RtaUniqueNum) { - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n"); - /* (8) */ - if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) { - rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort); - p->RIOError.Error = TTY_NUMBER_IN_USE; - p->RIOError.Entry = Entry; - p->RIOError.Other = SubEnt; - return -ENXIO; - } - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n"); - if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) { /* (9) */ - rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name); - p->RIOError.Error = NAME_USED_TWICE; - p->RIOError.Entry = Entry; - p->RIOError.Other = SubEnt; - return -ENXIO; - } - } - } - } else { /* (6) */ - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n"); - if (MapP->ID) { - rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name); - p->RIOError.Error = HOST_ID_NOT_ZERO; - p->RIOError.Entry = Entry; - return -ENXIO; - } - if (MapP->SysPort != NO_PORT) { - rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name); - p->RIOError.Error = HOST_SYSPORT_BAD; - p->RIOError.Entry = Entry; - return -ENXIO; - } - } - } - - /* - ** wow! if we get here then it's a goody! - */ - - /* - ** Zero the (old) entries for each host... - */ - for (Host = 0; Host < RIO_HOSTS; Host++) { - for (Entry = 0; Entry < MAX_RUP; Entry++) { - memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map)); - } - memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name)); - } - - /* - ** Copy in the new table entries - */ - for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) { - rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry); - MapP = &p->RIOConnectTable[Entry]; - - /* - ** Now, if it is an empty slot ignore it! - */ - if (MapP->HostUniqueNum == 0) - continue; - - /* - ** we saved the host number earlier, so grab it back - */ - HostP = &p->RIOHosts[MapP->Topology[0].Unit]; - - /* - ** If it is a host, then we only need to fill in the name field. - */ - if (MapP->ID == 0) { - rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name); - memcpy(HostP->Name, MapP->Name, MAX_NAME_LEN); - continue; - } - - /* - ** Its an RTA entry, so fill in the host mapping entries for it - ** and the port mapping entries. Notice that entry zero is for - ** ID one. - */ - HostMapP = &HostP->Mapping[MapP->ID - 1]; - - if (MapP->Flags & SLOT_IN_USE) { - rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name); - /* - ** structure assign, then sort out the bits we shouldn't have done - */ - *HostMapP = *MapP; - - HostMapP->Flags = SLOT_IN_USE; - if (MapP->Flags & RTA16_SECOND_SLOT) - HostMapP->Flags |= RTA16_SECOND_SLOT; - - RIOReMapPorts(p, HostP, HostMapP); - } else { - rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name); - } - } - - for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) { - p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry]; - } - - for (Host = 0; Host < p->RIONumHosts; Host++) { - for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) { - p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT; - p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK; - } - for (Entry = 0; Entry < MAX_RUP; Entry++) { - for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) { - p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT; - p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK; - } - } - if (!p->RIOHosts[Host].Name[0]) { - memcpy(p->RIOHosts[Host].Name, "HOST 1", 7); - p->RIOHosts[Host].Name[5] += Host; - } - /* - ** Check that default name assigned is unique. - */ - Host1 = Host; - NameIsUnique = 0; - while (!NameIsUnique) { - NameIsUnique = 1; - for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) { - if (Host2 == Host) - continue; - if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name) - == 0) { - NameIsUnique = 0; - Host1++; - if (Host1 >= p->RIONumHosts) - Host1 = 0; - p->RIOHosts[Host].Name[5] = '1' + Host1; - } - } - } - /* - ** Rename host if name already used. - */ - if (Host1 != Host) { - rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name); - memcpy(p->RIOHosts[Host].Name, "HOST 1", 7); - p->RIOHosts[Host].Name[5] += Host1; - } - rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name); - } - return 0; -} - -/* -** User process needs the config table - build it from first -** principles. -** -* FIXME: SMP locking -*/ -int RIOApel(struct rio_info *p) -{ - int Host; - int link; - int Rup; - int Next = 0; - struct Map *MapP; - struct Host *HostP; - unsigned long flags; - - rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n"); - - memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES); - - for (Host = 0; Host < RIO_HOSTS; Host++) { - rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host); - HostP = &p->RIOHosts[Host]; - rio_spin_lock_irqsave(&HostP->HostLock, flags); - - MapP = &p->RIOConnectTable[Next++]; - MapP->HostUniqueNum = HostP->UniqueNum; - if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { - rio_spin_unlock_irqrestore(&HostP->HostLock, flags); - continue; - } - MapP->RtaUniqueNum = 0; - MapP->ID = 0; - MapP->Flags = SLOT_IN_USE; - MapP->SysPort = NO_PORT; - for (link = 0; link < LINKS_PER_UNIT; link++) - MapP->Topology[link] = HostP->Topology[link]; - memcpy(MapP->Name, HostP->Name, MAX_NAME_LEN); - for (Rup = 0; Rup < MAX_RUP; Rup++) { - if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) { - p->RIOConnectTable[Next] = HostP->Mapping[Rup]; - if (HostP->Mapping[Rup].Flags & SLOT_IN_USE) - p->RIOConnectTable[Next].Flags |= SLOT_IN_USE; - if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE) - p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE; - if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT) - p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT; - Next++; - } - } - rio_spin_unlock_irqrestore(&HostP->HostLock, flags); - } - return 0; -} - -/* -** config.rio has taken a dislike to one of the gross maps entries. -** if the entry is suitably inactive, then we can gob on it and remove -** it from the table. -*/ -int RIODeleteRta(struct rio_info *p, struct Map *MapP) -{ - int host, entry, port, link; - int SysPort; - struct Host *HostP; - struct Map *HostMapP; - struct Port *PortP; - int work_done = 0; - unsigned long lock_flags, sem_flags; - - rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum); - - for (host = 0; host < p->RIONumHosts; host++) { - HostP = &p->RIOHosts[host]; - - rio_spin_lock_irqsave(&HostP->HostLock, lock_flags); - - if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { - rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags); - continue; - } - - for (entry = 0; entry < MAX_RUP; entry++) { - if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) { - HostMapP = &HostP->Mapping[entry]; - rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name); - - /* - ** Check all four links of the unit are disconnected - */ - for (link = 0; link < LINKS_PER_UNIT; link++) { - if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) { - rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n"); - p->RIOError.Error = UNIT_IS_IN_USE; - rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags); - return -EBUSY; - } - } - /* - ** Slot has been allocated, BUT not booted/routed/ - ** connected/selected or anything else-ed - */ - SysPort = HostMapP->SysPort; - - if (SysPort != NO_PORT) { - for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) { - PortP = p->RIOPortp[port]; - rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n"); - - rio_spin_lock_irqsave(&PortP->portSem, sem_flags); - - PortP->Mapped = 0; - - if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) { - - rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n"); - PortP->TxBufferIn = PortP->TxBufferOut = 0; - /* What should I do - wakeup( &PortP->TxBufferIn ); - wakeup( &PortP->TxBufferOut); - */ - PortP->InUse = NOT_INUSE; - /* What should I do - wakeup( &PortP->InUse ); - signal(PortP->TtyP->t_pgrp,SIGKILL); - ttyflush(PortP->TtyP,(FREAD|FWRITE)); - */ - PortP->State |= RIO_CLOSING | RIO_DELETED; - } - - /* - ** For the second slot of a 16 port RTA, the - ** driver needs to reset the changes made to - ** the phb to port mappings in RIORouteRup. - */ - if (PortP->SecondBlock) { - u16 dest_unit = HostMapP->ID; - u16 dest_port = port - SysPort; - u16 __iomem *TxPktP; - struct PKT __iomem *Pkt; - - for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) { - /* - ** *TxPktP is the pointer to the - ** transmit packet on the host card. - ** This needs to be translated into - ** a 32 bit pointer so it can be - ** accessed from the driver. - */ - Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&*TxPktP)); - rio_dprintk(RIO_DEBUG_TABLE, "Tx packet (%x) destination: Old %x:%x New %x:%x\n", readw(TxPktP), readb(&Pkt->dest_unit), readb(&Pkt->dest_port), dest_unit, dest_port); - writew(dest_unit, &Pkt->dest_unit); - writew(dest_port, &Pkt->dest_port); - } - rio_dprintk(RIO_DEBUG_TABLE, "Port %d phb destination: Old %x:%x New %x:%x\n", port, readb(&PortP->PhbP->destination) & 0xff, (readb(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port); - writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination); - } - rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags); - } - } - rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n"); - memset(HostMapP, 0, sizeof(struct Map)); - work_done++; - } - } - rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags); - } - - /* XXXXX lock me up */ - for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) { - if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) { - memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map)); - work_done++; - } - if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) { - memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map)); - work_done++; - } - } - if (work_done) - return 0; - - rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n"); - p->RIOError.Error = COULDNT_FIND_ENTRY; - return -ENXIO; -} - -int RIOAssignRta(struct rio_info *p, struct Map *MapP) -{ - int host; - struct Map *HostMapP; - char *sptr; - int link; - - - rio_dprintk(RIO_DEBUG_TABLE, "Assign entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort); - - if ((MapP->ID != (u16) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) { - rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n"); - p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - if (MapP->RtaUniqueNum == 0) { - rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n"); - p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO; - return -EINVAL; - } - if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) { - rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA); - p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) { - rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort); - p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - - /* - ** Copy the name across to the map entry. - */ - MapP->Name[MAX_NAME_LEN - 1] = '\0'; - sptr = MapP->Name; - while (*sptr) { - if (*sptr < ' ' || *sptr > '~') { - rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n"); - p->RIOError.Error = BAD_CHARACTER_IN_NAME; - return -EINVAL; - } - sptr++; - } - - for (host = 0; host < p->RIONumHosts; host++) { - if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) { - if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) { - p->RIOError.Error = HOST_NOT_RUNNING; - return -ENXIO; - } - - /* - ** Now we have a host we need to allocate an ID - ** if the entry does not already have one. - */ - if (MapP->ID == (u16) - 1) { - int nNewID; - - rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name); - /* - ** The idea here is to allow RTA's to be assigned - ** before they actually appear on the network. - ** This allows the addition of RTA's without having - ** to plug them in. - ** What we do is: - ** - Find a free ID and allocate it to the RTA. - ** - If this map entry is the second half of a - ** 16 port entry then find the other half and - ** make sure the 2 cross reference each other. - */ - if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) { - p->RIOError.Error = COULDNT_FIND_ENTRY; - return -EBUSY; - } - MapP->ID = (u16) nNewID + 1; - rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID); - HostMapP = &p->RIOHosts[host].Mapping[nNewID]; - HostMapP->RtaUniqueNum = MapP->RtaUniqueNum; - HostMapP->HostUniqueNum = MapP->HostUniqueNum; - HostMapP->ID = MapP->ID; - for (link = 0; link < LINKS_PER_UNIT; link++) { - HostMapP->Topology[link].Unit = ROUTE_DISCONNECT; - HostMapP->Topology[link].Link = NO_LINK; - } - if (MapP->Flags & RTA16_SECOND_SLOT) { - int unit; - - for (unit = 0; unit < MAX_RUP; unit++) - if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum) - break; - if (unit == MAX_RUP) { - p->RIOError.Error = COULDNT_FIND_ENTRY; - return -EBUSY; - } - HostMapP->Flags |= RTA16_SECOND_SLOT; - HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID; - p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID; - rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID); - } - } - - HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1]; - - if (HostMapP->Flags & SLOT_IN_USE) { - rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID); - p->RIOError.Error = ID_ALREADY_IN_USE; - return -EBUSY; - } - - /* - ** Assign the sys ports and the name, and mark the slot as - ** being in use. - */ - HostMapP->SysPort = MapP->SysPort; - if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) - memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN); - HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED; -#ifdef NEED_TO_FIX - RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]); -#endif - if (MapP->Flags & RTA16_SECOND_SLOT) - HostMapP->Flags |= RTA16_SECOND_SLOT; - - RIOReMapPorts(p, &p->RIOHosts[host], HostMapP); - /* - ** Adjust 2nd block of 8 phbs - */ - if (MapP->Flags & RTA16_SECOND_SLOT) - RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1); - - if (HostMapP->SysPort != NO_PORT) { - if (HostMapP->SysPort < p->RIOFirstPortsBooted) - p->RIOFirstPortsBooted = HostMapP->SysPort; - if (HostMapP->SysPort > p->RIOLastPortsBooted) - p->RIOLastPortsBooted = HostMapP->SysPort; - } - if (MapP->Flags & RTA16_SECOND_SLOT) - rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name); - else - rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name); - return 0; - } - } - p->RIOError.Error = UNKNOWN_HOST_NUMBER; - rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum); - return -ENXIO; -} - - -int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP) -{ - struct Port *PortP; - unsigned int SubEnt; - unsigned int HostPort; - unsigned int SysPort; - u16 RtaType; - unsigned long flags; - - rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID); - - /* - ** We need to tell the UnixRups which sysport the rup corresponds to - */ - HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort; - - if (HostMapP->SysPort == NO_PORT) - return (0); - - RtaType = GetUnitType(HostMapP->RtaUniqueNum); - rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1); - - /* - ** now map each of its eight ports - */ - for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) { - rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort); - SysPort = HostMapP->SysPort + SubEnt; /* portnumber within system */ - /* portnumber on host */ - - HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt; - - rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp); - PortP = p->RIOPortp[SysPort]; - rio_dprintk(RIO_DEBUG_TABLE, "Map port\n"); - - /* - ** Point at all the real neat data structures - */ - rio_spin_lock_irqsave(&PortP->portSem, flags); - PortP->HostP = HostP; - PortP->Caddr = HostP->Caddr; - - /* - ** The PhbP cannot be filled in yet - ** unless the host has been booted - */ - if ((HostP->Flags & RUN_STATE) == RC_RUNNING) { - struct PHB __iomem *PhbP = PortP->PhbP = &HostP->PhbP[HostPort]; - PortP->TxAdd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add)); - PortP->TxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start)); - PortP->TxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end)); - PortP->RxRemove = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove)); - PortP->RxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start)); - PortP->RxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end)); - } else - PortP->PhbP = NULL; - - /* - ** port related flags - */ - PortP->HostPort = HostPort; - /* - ** For each part of a 16 port RTA, RupNum is ID - 1. - */ - PortP->RupNum = HostMapP->ID - 1; - if (HostMapP->Flags & RTA16_SECOND_SLOT) { - PortP->ID2 = HostMapP->ID2 - 1; - PortP->SecondBlock = 1; - } else { - PortP->ID2 = 0; - PortP->SecondBlock = 0; - } - PortP->RtaUniqueNum = HostMapP->RtaUniqueNum; - - /* - ** If the port was already mapped then thats all we need to do. - */ - if (PortP->Mapped) { - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - continue; - } else - HostMapP->Flags &= ~RTA_NEWBOOT; - - PortP->State = 0; - PortP->Config = 0; - /* - ** Check out the module type - if it is special (read only etc.) - ** then we need to set flags in the PortP->Config. - ** Note: For 16 port RTA, all ports are of the same type. - */ - if (RtaType == TYPE_RTA16) { - PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE]; - } else { - if (SubEnt < PORTS_PER_MODULE) - PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE]; - else - PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE]; - } - - /* - ** more port related flags - */ - PortP->PortState = 0; - PortP->ModemLines = 0; - PortP->ModemState = 0; - PortP->CookMode = COOK_WELL; - PortP->ParamSem = 0; - PortP->FlushCmdBodge = 0; - PortP->WflushFlag = 0; - PortP->MagicFlags = 0; - PortP->Lock = 0; - PortP->Store = 0; - PortP->FirstOpen = 1; - - /* - ** Buffers 'n things - */ - PortP->RxDataStart = 0; - PortP->Cor2Copy = 0; - PortP->Name = &HostMapP->Name[0]; - PortP->statsGather = 0; - PortP->txchars = 0; - PortP->rxchars = 0; - PortP->opens = 0; - PortP->closes = 0; - PortP->ioctls = 0; - if (PortP->TxRingBuffer) - memset(PortP->TxRingBuffer, 0, p->RIOBufferSize); - else if (p->RIOBufferSize) { - PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL); - } - PortP->TxBufferOut = 0; - PortP->TxBufferIn = 0; - PortP->Debug = 0; - /* - ** LastRxTgl stores the state of the rx toggle bit for this - ** port, to be compared with the state of the next pkt received. - ** If the same, we have received the same rx pkt from the RTA - ** twice. Initialise to a value not equal to PHB_RX_TGL or 0. - */ - PortP->LastRxTgl = ~(u8) PHB_RX_TGL; - - /* - ** and mark the port as usable - */ - PortP->Mapped = 1; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - } - if (HostMapP->SysPort < p->RIOFirstPortsMapped) - p->RIOFirstPortsMapped = HostMapP->SysPort; - if (HostMapP->SysPort > p->RIOLastPortsMapped) - p->RIOLastPortsMapped = HostMapP->SysPort; - - return 0; -} - -int RIOChangeName(struct rio_info *p, struct Map *MapP) -{ - int host; - struct Map *HostMapP; - char *sptr; - - rio_dprintk(RIO_DEBUG_TABLE, "Change name entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort); - - if (MapP->ID > MAX_RUP) { - rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n"); - p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE; - return -EINVAL; - } - - MapP->Name[MAX_NAME_LEN - 1] = '\0'; - sptr = MapP->Name; - - while (*sptr) { - if (*sptr < ' ' || *sptr > '~') { - rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n"); - p->RIOError.Error = BAD_CHARACTER_IN_NAME; - return -EINVAL; - } - sptr++; - } - - for (host = 0; host < p->RIONumHosts; host++) { - if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) { - if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) { - p->RIOError.Error = HOST_NOT_RUNNING; - return -ENXIO; - } - if (MapP->ID == 0) { - memcpy(p->RIOHosts[host].Name, MapP->Name, MAX_NAME_LEN); - return 0; - } - - HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1]; - - if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) { - p->RIOError.Error = RTA_NUMBER_WRONG; - return -ENXIO; - } - memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN); - return 0; - } - } - p->RIOError.Error = UNKNOWN_HOST_NUMBER; - rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum); - return -ENXIO; -} diff --git a/drivers/char/rio/riotty.c b/drivers/char/rio/riotty.c deleted file mode 100644 index 8a90393faf3c..000000000000 --- a/drivers/char/rio/riotty.c +++ /dev/null @@ -1,654 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : riotty.c -** SID : 1.3 -** Last Modified : 11/6/98 10:33:47 -** Retrieved : 11/6/98 10:33:50 -** -** ident @(#)riotty.c 1.3 -** -** ----------------------------------------------------------------------------- -*/ - -#define __EXPLICIT_DEF_H__ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include - -#include - - -#include "linux_compat.h" -#include "rio_linux.h" -#include "pkt.h" -#include "daemon.h" -#include "rio.h" -#include "riospace.h" -#include "cmdpkt.h" -#include "map.h" -#include "rup.h" -#include "port.h" -#include "riodrvr.h" -#include "rioinfo.h" -#include "func.h" -#include "errors.h" -#include "pci.h" - -#include "parmmap.h" -#include "unixrup.h" -#include "board.h" -#include "host.h" -#include "phb.h" -#include "link.h" -#include "cmdblk.h" -#include "route.h" -#include "cirrus.h" -#include "rioioctl.h" -#include "param.h" - -static void RIOClearUp(struct Port *PortP); - -/* Below belongs in func.h */ -int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg); - - -extern struct rio_info *p; - - -int riotopen(struct tty_struct *tty, struct file *filp) -{ - unsigned int SysPort; - int repeat_this = 250; - struct Port *PortP; /* pointer to the port structure */ - unsigned long flags; - int retval = 0; - - func_enter(); - - /* Make sure driver_data is NULL in case the rio isn't booted jet. Else gs_close - is going to oops. - */ - tty->driver_data = NULL; - - SysPort = rio_minor(tty); - - if (p->RIOFailed) { - rio_dprintk(RIO_DEBUG_TTY, "System initialisation failed\n"); - func_exit(); - return -ENXIO; - } - - rio_dprintk(RIO_DEBUG_TTY, "port open SysPort %d (mapped:%d)\n", SysPort, p->RIOPortp[SysPort]->Mapped); - - /* - ** Validate that we have received a legitimate request. - ** Currently, just check that we are opening a port on - ** a host card that actually exists, and that the port - ** has been mapped onto a host. - */ - if (SysPort >= RIO_PORTS) { /* out of range ? */ - rio_dprintk(RIO_DEBUG_TTY, "Illegal port number %d\n", SysPort); - func_exit(); - return -ENXIO; - } - - /* - ** Grab pointer to the port stucture - */ - PortP = p->RIOPortp[SysPort]; /* Get control struc */ - rio_dprintk(RIO_DEBUG_TTY, "PortP: %p\n", PortP); - if (!PortP->Mapped) { /* we aren't mapped yet! */ - /* - ** The system doesn't know which RTA this port - ** corresponds to. - */ - rio_dprintk(RIO_DEBUG_TTY, "port not mapped into system\n"); - func_exit(); - return -ENXIO; - } - - tty->driver_data = PortP; - - PortP->gs.port.tty = tty; - PortP->gs.port.count++; - - rio_dprintk(RIO_DEBUG_TTY, "%d bytes in tx buffer\n", PortP->gs.xmit_cnt); - - retval = gs_init_port(&PortP->gs); - if (retval) { - PortP->gs.port.count--; - return -ENXIO; - } - /* - ** If the host hasn't been booted yet, then - ** fail - */ - if ((PortP->HostP->Flags & RUN_STATE) != RC_RUNNING) { - rio_dprintk(RIO_DEBUG_TTY, "Host not running\n"); - func_exit(); - return -ENXIO; - } - - /* - ** If the RTA has not booted yet and the user has choosen to block - ** until the RTA is present then we must spin here waiting for - ** the RTA to boot. - */ - /* I find the above code a bit hairy. I find the below code - easier to read and shorter. Now, if it works too that would - be great... -- REW - */ - rio_dprintk(RIO_DEBUG_TTY, "Checking if RTA has booted... \n"); - while (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)) { - if (!PortP->WaitUntilBooted) { - rio_dprintk(RIO_DEBUG_TTY, "RTA never booted\n"); - func_exit(); - return -ENXIO; - } - - /* Under Linux you'd normally use a wait instead of this - busy-waiting. I'll stick with the old implementation for - now. --REW - */ - if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_TTY, "RTA_wait_for_boot: EINTR in delay \n"); - func_exit(); - return -EINTR; - } - if (repeat_this-- <= 0) { - rio_dprintk(RIO_DEBUG_TTY, "Waiting for RTA to boot timeout\n"); - func_exit(); - return -EIO; - } - } - rio_dprintk(RIO_DEBUG_TTY, "RTA has been booted\n"); - rio_spin_lock_irqsave(&PortP->portSem, flags); - if (p->RIOHalted) { - goto bombout; - } - - /* - ** If the port is in the final throws of being closed, - ** we should wait here (politely), waiting - ** for it to finish, so that it doesn't close us! - */ - while ((PortP->State & RIO_CLOSING) && !p->RIOHalted) { - rio_dprintk(RIO_DEBUG_TTY, "Waiting for RIO_CLOSING to go away\n"); - if (repeat_this-- <= 0) { - rio_dprintk(RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); - RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); - retval = -EINTR; - goto bombout; - } - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { - rio_spin_lock_irqsave(&PortP->portSem, flags); - retval = -EINTR; - goto bombout; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - } - - if (!PortP->Mapped) { - rio_dprintk(RIO_DEBUG_TTY, "Port unmapped while closing!\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - retval = -ENXIO; - func_exit(); - return retval; - } - - if (p->RIOHalted) { - goto bombout; - } - -/* -** 15.10.1998 ARG - ESIL 0761 part fix -** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure, -** we need to make sure that the flags are clear when the port is opened. -*/ - /* Uh? Suppose I turn these on and then another process opens - the port again? The flags get cleared! Not good. -- REW */ - if (!(PortP->State & (RIO_LOPEN | RIO_MOPEN))) { - PortP->Config &= ~(RIO_CTSFLOW | RIO_RTSFLOW); - } - - if (!(PortP->firstOpen)) { /* First time ? */ - rio_dprintk(RIO_DEBUG_TTY, "First open for this port\n"); - - - PortP->firstOpen++; - PortP->CookMode = 0; /* XXX RIOCookMode(tp); */ - PortP->InUse = NOT_INUSE; - - /* Tentative fix for bug PR27. Didn't work. */ - /* PortP->gs.xmit_cnt = 0; */ - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - - /* Someone explain to me why this delay/config is - here. If I read the docs correctly the "open" - command piggybacks the parameters immediately. - -- REW */ - RIOParam(PortP, RIOC_OPEN, 1, OK_TO_SLEEP); /* Open the port */ - rio_spin_lock_irqsave(&PortP->portSem, flags); - - /* - ** wait for the port to be not closed. - */ - while (!(PortP->PortState & PORT_ISOPEN) && !p->RIOHalted) { - rio_dprintk(RIO_DEBUG_TTY, "Waiting for PORT_ISOPEN-currently %x\n", PortP->PortState); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_TTY, "Waiting for open to finish broken by signal\n"); - RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); - func_exit(); - return -EINTR; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - } - - if (p->RIOHalted) { - retval = -EIO; - bombout: - /* RIOClearUp( PortP ); */ - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return retval; - } - rio_dprintk(RIO_DEBUG_TTY, "PORT_ISOPEN found\n"); - } - rio_dprintk(RIO_DEBUG_TTY, "Modem - test for carrier\n"); - /* - ** ACTION - ** insert test for carrier here. -- ??? - ** I already see that test here. What's the deal? -- REW - */ - if ((PortP->gs.port.tty->termios->c_cflag & CLOCAL) || - (PortP->ModemState & RIOC_MSVR1_CD)) { - rio_dprintk(RIO_DEBUG_TTY, "open(%d) Modem carr on\n", SysPort); - /* - tp->tm.c_state |= CARR_ON; - wakeup((caddr_t) &tp->tm.c_canq); - */ - PortP->State |= RIO_CARR_ON; - wake_up_interruptible(&PortP->gs.port.open_wait); - } else { /* no carrier - wait for DCD */ - /* - while (!(PortP->gs.port.tty->termios->c_state & CARR_ON) && - !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted ) - */ - while (!(PortP->State & RIO_CARR_ON) && !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted) { - rio_dprintk(RIO_DEBUG_TTY, "open(%d) sleeping for carr on\n", SysPort); - /* - PortP->gs.port.tty->termios->c_state |= WOPEN; - */ - PortP->State |= RIO_WOPEN; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { - rio_spin_lock_irqsave(&PortP->portSem, flags); - /* - ** ACTION: verify that this is a good thing - ** to do here. -- ??? - ** I think it's OK. -- REW - */ - rio_dprintk(RIO_DEBUG_TTY, "open(%d) sleeping for carr broken by signal\n", SysPort); - RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); - /* - tp->tm.c_state &= ~WOPEN; - */ - PortP->State &= ~RIO_WOPEN; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - func_exit(); - return -EINTR; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - } - PortP->State &= ~RIO_WOPEN; - } - if (p->RIOHalted) - goto bombout; - rio_dprintk(RIO_DEBUG_TTY, "Setting RIO_MOPEN\n"); - PortP->State |= RIO_MOPEN; - - if (p->RIOHalted) - goto bombout; - - rio_dprintk(RIO_DEBUG_TTY, "high level open done\n"); - - /* - ** Count opens for port statistics reporting - */ - if (PortP->statsGather) - PortP->opens++; - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - rio_dprintk(RIO_DEBUG_TTY, "Returning from open\n"); - func_exit(); - return 0; -} - -/* -** RIOClose the port. -** The operating system thinks that this is last close for the device. -** As there are two interfaces to the port (Modem and tty), we need to -** check that both are closed before we close the device. -*/ -int riotclose(void *ptr) -{ - struct Port *PortP = ptr; /* pointer to the port structure */ - int deleted = 0; - int try = -1; /* Disable the timeouts by setting them to -1 */ - int repeat_this = -1; /* Congrats to those having 15 years of - uptime! (You get to break the driver.) */ - unsigned long end_time; - struct tty_struct *tty; - unsigned long flags; - int rv = 0; - - rio_dprintk(RIO_DEBUG_TTY, "port close SysPort %d\n", PortP->PortNum); - - /* PortP = p->RIOPortp[SysPort]; */ - rio_dprintk(RIO_DEBUG_TTY, "Port is at address %p\n", PortP); - /* tp = PortP->TtyP; *//* Get tty */ - tty = PortP->gs.port.tty; - rio_dprintk(RIO_DEBUG_TTY, "TTY is at address %p\n", tty); - - if (PortP->gs.closing_wait) - end_time = jiffies + PortP->gs.closing_wait; - else - end_time = jiffies + MAX_SCHEDULE_TIMEOUT; - - rio_spin_lock_irqsave(&PortP->portSem, flags); - - /* - ** Setting this flag will make any process trying to open - ** this port block until we are complete closing it. - */ - PortP->State |= RIO_CLOSING; - - if ((PortP->State & RIO_DELETED)) { - rio_dprintk(RIO_DEBUG_TTY, "Close on deleted RTA\n"); - deleted = 1; - } - - if (p->RIOHalted) { - RIOClearUp(PortP); - rv = -EIO; - goto close_end; - } - - rio_dprintk(RIO_DEBUG_TTY, "Clear bits\n"); - /* - ** clear the open bits for this device - */ - PortP->State &= ~RIO_MOPEN; - PortP->State &= ~RIO_CARR_ON; - PortP->ModemState &= ~RIOC_MSVR1_CD; - /* - ** If the device was open as both a Modem and a tty line - ** then we need to wimp out here, as the port has not really - ** been finally closed (gee, whizz!) The test here uses the - ** bit for the OTHER mode of operation, to see if THAT is - ** still active! - */ - if ((PortP->State & (RIO_LOPEN | RIO_MOPEN))) { - /* - ** The port is still open for the other task - - ** return, pretending that we are still active. - */ - rio_dprintk(RIO_DEBUG_TTY, "Channel %d still open !\n", PortP->PortNum); - PortP->State &= ~RIO_CLOSING; - if (PortP->firstOpen) - PortP->firstOpen--; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return -EIO; - } - - rio_dprintk(RIO_DEBUG_TTY, "Closing down - everything must go!\n"); - - PortP->State &= ~RIO_DYNOROD; - - /* - ** This is where we wait for the port - ** to drain down before closing. Bye-bye.... - ** (We never meant to do this) - */ - rio_dprintk(RIO_DEBUG_TTY, "Timeout 1 starts\n"); - - if (!deleted) - while ((PortP->InUse != NOT_INUSE) && !p->RIOHalted && (PortP->TxBufferIn != PortP->TxBufferOut)) { - if (repeat_this-- <= 0) { - rv = -EINTR; - rio_dprintk(RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); - RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); - goto close_end; - } - rio_dprintk(RIO_DEBUG_TTY, "Calling timeout to flush in closing\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (RIODelay_ni(PortP, HUNDRED_MS * 10) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_TTY, "RTA EINTR in delay \n"); - rv = -EINTR; - rio_spin_lock_irqsave(&PortP->portSem, flags); - goto close_end; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - } - - PortP->TxBufferIn = PortP->TxBufferOut = 0; - repeat_this = 0xff; - - PortP->InUse = 0; - if ((PortP->State & (RIO_LOPEN | RIO_MOPEN))) { - /* - ** The port has been re-opened for the other task - - ** return, pretending that we are still active. - */ - rio_dprintk(RIO_DEBUG_TTY, "Channel %d re-open!\n", PortP->PortNum); - PortP->State &= ~RIO_CLOSING; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (PortP->firstOpen) - PortP->firstOpen--; - return -EIO; - } - - if (p->RIOHalted) { - RIOClearUp(PortP); - goto close_end; - } - - /* Can't call RIOShortCommand with the port locked. */ - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - - if (RIOShortCommand(p, PortP, RIOC_CLOSE, 1, 0) == RIO_FAIL) { - RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); - rio_spin_lock_irqsave(&PortP->portSem, flags); - goto close_end; - } - - if (!deleted) - while (try && (PortP->PortState & PORT_ISOPEN)) { - try--; - if (time_after(jiffies, end_time)) { - rio_dprintk(RIO_DEBUG_TTY, "Run out of tries - force the bugger shut!\n"); - RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); - break; - } - rio_dprintk(RIO_DEBUG_TTY, "Close: PortState:ISOPEN is %d\n", PortP->PortState & PORT_ISOPEN); - - if (p->RIOHalted) { - RIOClearUp(PortP); - rio_spin_lock_irqsave(&PortP->portSem, flags); - goto close_end; - } - if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_TTY, "RTA EINTR in delay \n"); - RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); - break; - } - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - rio_dprintk(RIO_DEBUG_TTY, "Close: try was %d on completion\n", try); - - /* RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); */ - -/* -** 15.10.1998 ARG - ESIL 0761 part fix -** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure,** we need to make sure that the flags are clear when the port is opened. -*/ - PortP->Config &= ~(RIO_CTSFLOW | RIO_RTSFLOW); - - /* - ** Count opens for port statistics reporting - */ - if (PortP->statsGather) - PortP->closes++; - -close_end: - /* XXX: Why would a "DELETED" flag be reset here? I'd have - thought that a "deleted" flag means that the port was - permanently gone, but here we can make it reappear by it - being in close during the "deletion". - */ - PortP->State &= ~(RIO_CLOSING | RIO_DELETED); - if (PortP->firstOpen) - PortP->firstOpen--; - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - rio_dprintk(RIO_DEBUG_TTY, "Return from close\n"); - return rv; -} - - - -static void RIOClearUp(struct Port *PortP) -{ - rio_dprintk(RIO_DEBUG_TTY, "RIOHalted set\n"); - PortP->Config = 0; /* Direct semaphore */ - PortP->PortState = 0; - PortP->firstOpen = 0; - PortP->FlushCmdBodge = 0; - PortP->ModemState = PortP->CookMode = 0; - PortP->Mapped = 0; - PortP->WflushFlag = 0; - PortP->MagicFlags = 0; - PortP->RxDataStart = 0; - PortP->TxBufferIn = 0; - PortP->TxBufferOut = 0; -} - -/* -** Put a command onto a port. -** The PortPointer, command, length and arg are passed. -** The len is the length *inclusive* of the command byte, -** and so for a command that takes no data, len==1. -** The arg is a single byte, and is only used if len==2. -** Other values of len aren't allowed, and will cause -** a panic. -*/ -int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg) -{ - struct PKT __iomem *PacketP; - int retries = 20; /* at 10 per second -> 2 seconds */ - unsigned long flags; - - rio_dprintk(RIO_DEBUG_TTY, "entering shortcommand.\n"); - - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n"); - return RIO_FAIL; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - - /* - ** If the port is in use for pre-emptive command, then wait for it to - ** be free again. - */ - while ((PortP->InUse != NOT_INUSE) && !p->RIOHalted) { - rio_dprintk(RIO_DEBUG_TTY, "Waiting for not in use (%d)\n", retries); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (retries-- <= 0) { - return RIO_FAIL; - } - if (RIODelay_ni(PortP, HUNDRED_MS) == RIO_FAIL) { - return RIO_FAIL; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - } - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n"); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return RIO_FAIL; - } - - while (!can_add_transmit(&PacketP, PortP) && !p->RIOHalted) { - rio_dprintk(RIO_DEBUG_TTY, "Waiting to add short command to queue (%d)\n", retries); - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - if (retries-- <= 0) { - rio_dprintk(RIO_DEBUG_TTY, "out of tries. Failing\n"); - return RIO_FAIL; - } - if (RIODelay_ni(PortP, HUNDRED_MS) == RIO_FAIL) { - return RIO_FAIL; - } - rio_spin_lock_irqsave(&PortP->portSem, flags); - } - - if (p->RIOHalted) { - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return RIO_FAIL; - } - - /* - ** set the command byte and the argument byte - */ - writeb(command, &PacketP->data[0]); - - if (len == 2) - writeb(arg, &PacketP->data[1]); - - /* - ** set the length of the packet and set the command bit. - */ - writeb(PKT_CMD_BIT | len, &PacketP->len); - - add_transmit(PortP); - /* - ** Count characters transmitted for port statistics reporting - */ - if (PortP->statsGather) - PortP->txchars += len; - - rio_spin_unlock_irqrestore(&PortP->portSem, flags); - return p->RIOHalted ? RIO_FAIL : ~RIO_FAIL; -} - - diff --git a/drivers/char/rio/route.h b/drivers/char/rio/route.h deleted file mode 100644 index 46e963771c30..000000000000 --- a/drivers/char/rio/route.h +++ /dev/null @@ -1,101 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* R O U T E H E A D E R - ******* ******* - **************************************************************************** - - Author : Ian Nandhra / Jeremy Rolls - Date : - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- - - ***************************************************************************/ - -#ifndef _route_h -#define _route_h - -#define MAX_LINKS 4 -#define MAX_NODES 17 /* Maximum nodes in a subnet */ -#define NODE_BYTES ((MAX_NODES / 8) + 1) /* Number of bytes needed for - 1 bit per node */ -#define ROUTE_DATA_SIZE (NODE_BYTES + 2) /* Number of bytes for complete - info about cost etc. */ -#define ROUTES_PER_PACKET ((PKT_MAX_DATA_LEN -2)/ ROUTE_DATA_SIZE) - /* Number of nodes we can squeeze - into one packet */ -#define MAX_TOPOLOGY_PACKETS (MAX_NODES / ROUTES_PER_PACKET + 1) -/************************************************ - * Define the types of command for the ROUTE RUP. - ************************************************/ -#define ROUTE_REQUEST 0 /* Request an ID */ -#define ROUTE_FOAD 1 /* Kill the RTA */ -#define ROUTE_ALREADY 2 /* ID given already */ -#define ROUTE_USED 3 /* All ID's used */ -#define ROUTE_ALLOCATE 4 /* Here it is */ -#define ROUTE_REQ_TOP 5 /* I bet you didn't expect.... - the Topological Inquisition */ -#define ROUTE_TOPOLOGY 6 /* Topology request answered FD */ -/******************************************************************* - * Define the Route Map Structure - * - * The route map gives a pointer to a Link Structure to use. - * This allows Disconnected Links to be checked quickly - ******************************************************************/ -typedef struct COST_ROUTE COST_ROUTE; -struct COST_ROUTE { - unsigned char cost; /* Cost down this link */ - unsigned char route[NODE_BYTES]; /* Nodes through this route */ -}; - -typedef struct ROUTE_STR ROUTE_STR; -struct ROUTE_STR { - COST_ROUTE cost_route[MAX_LINKS]; - /* cost / route for this link */ - ushort favoured; /* favoured link */ -}; - - -#define NO_LINK (short) 5 /* Link unattached */ -#define ROUTE_NO_ID (short) 100 /* No Id */ -#define ROUTE_DISCONNECT (ushort) 0xff /* Not connected */ -#define ROUTE_INTERCONNECT (ushort) 0x40 /* Sub-net interconnect */ - - -#define SYNC_RUP (ushort) 255 -#define COMMAND_RUP (ushort) 254 -#define ERROR_RUP (ushort) 253 -#define POLL_RUP (ushort) 252 -#define BOOT_RUP (ushort) 251 -#define ROUTE_RUP (ushort) 250 -#define STATUS_RUP (ushort) 249 -#define POWER_RUP (ushort) 248 - -#define HIGHEST_RUP (ushort) 255 /* Set to Top one */ -#define LOWEST_RUP (ushort) 248 /* Set to bottom one */ - -#endif - -/*********** end of file ***********/ diff --git a/drivers/char/rio/rup.h b/drivers/char/rio/rup.h deleted file mode 100644 index 4ae90cb207a9..000000000000 --- a/drivers/char/rio/rup.h +++ /dev/null @@ -1,69 +0,0 @@ -/**************************************************************************** - ******* ******* - ******* R U P S T R U C T U R E - ******* ******* - **************************************************************************** - - Author : Ian Nandhra - Date : - - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Version : 0.01 - - - Mods - ---------------------------------------------------------------------------- - Date By Description - ---------------------------------------------------------------------------- - - ***************************************************************************/ - -#ifndef _rup_h -#define _rup_h 1 - -#define MAX_RUP ((short) 16) -#define PKTS_PER_RUP ((short) 2) /* They are always used in pairs */ - -/************************************************* - * Define all the packet request stuff - ************************************************/ -#define TX_RUP_INACTIVE 0 /* Nothing to transmit */ -#define TX_PACKET_READY 1 /* Transmit packet ready */ -#define TX_LOCK_RUP 2 /* Transmit side locked */ - -#define RX_RUP_INACTIVE 0 /* Nothing received */ -#define RX_PACKET_READY 1 /* Packet received */ - -#define RUP_NO_OWNER 0xff /* RUP not owned by any process */ - -struct RUP { - u16 txpkt; /* Outgoing packet */ - u16 rxpkt; /* Incoming packet */ - u16 link; /* Which link to send down? */ - u8 rup_dest_unit[2]; /* Destination unit */ - u16 handshake; /* For handshaking */ - u16 timeout; /* Timeout */ - u16 status; /* Status */ - u16 txcontrol; /* Transmit control */ - u16 rxcontrol; /* Receive control */ -}; - -#endif - -/*********** end of file ***********/ diff --git a/drivers/char/rio/unixrup.h b/drivers/char/rio/unixrup.h deleted file mode 100644 index 7abf0cba0f2c..000000000000 --- a/drivers/char/rio/unixrup.h +++ /dev/null @@ -1,51 +0,0 @@ -/* -** ----------------------------------------------------------------------------- -** -** Perle Specialix driver for Linux -** Ported from existing RIO Driver for SCO sources. - * - * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -** -** Module : unixrup.h -** SID : 1.2 -** Last Modified : 11/6/98 11:34:20 -** Retrieved : 11/6/98 11:34:22 -** -** ident @(#)unixrup.h 1.2 -** -** ----------------------------------------------------------------------------- -*/ - -#ifndef __rio_unixrup_h__ -#define __rio_unixrup_h__ - -/* -** UnixRup data structure. This contains pointers to actual RUPs on the -** host card, and all the command/boot control stuff. -*/ -struct UnixRup { - struct CmdBlk *CmdsWaitingP; /* Commands waiting to be done */ - struct CmdBlk *CmdPendingP; /* The command currently being sent */ - struct RUP __iomem *RupP; /* the Rup to send it to */ - unsigned int Id; /* Id number */ - unsigned int BaseSysPort; /* SysPort of first tty on this RTA */ - unsigned int ModTypes; /* Modules on this RTA */ - spinlock_t RupLock; /* Lock structure for MPX */ - /* struct lockb RupLock; *//* Lock structure for MPX */ -}; - -#endif /* __rio_unixrup_h__ */ diff --git a/drivers/char/ser_a2232.c b/drivers/char/ser_a2232.c deleted file mode 100644 index 3f47c2ead8e5..000000000000 --- a/drivers/char/ser_a2232.c +++ /dev/null @@ -1,831 +0,0 @@ -/* drivers/char/ser_a2232.c */ - -/* $Id: ser_a2232.c,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */ - -/* Linux serial driver for the Amiga A2232 board */ - -/* This driver is MAINTAINED. Before applying any changes, please contact - * the author. - */ - -/* Copyright (c) 2000-2001 Enver Haase - * alias The A2232 driver project - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ -/***************************** Documentation ************************/ -/* - * This driver is in EXPERIMENTAL state. That means I could not find - * someone with five A2232 boards with 35 ports running at 19200 bps - * at the same time and test the machine's behaviour. - * However, I know that you can performance-tweak this driver (see - * the source code). - * One thing to consider is the time this driver consumes during the - * Amiga's vertical blank interrupt. Everything that is to be done - * _IS DONE_ when entering the vertical blank interrupt handler of - * this driver. - * However, it would be more sane to only do the job for only ONE card - * instead of ALL cards at a time; or, more generally, to handle only - * SOME ports instead of ALL ports at a time. - * However, as long as no-one runs into problems I guess I shouldn't - * change the driver as it runs fine for me :) . - * - * Version history of this file: - * 0.4 Resolved licensing issues. - * 0.3 Inclusion in the Linux/m68k tree, small fixes. - * 0.2 Added documentation, minor typo fixes. - * 0.1 Initial release. - * - * TO DO: - * - Handle incoming BREAK events. I guess "Stevens: Advanced - * Programming in the UNIX(R) Environment" is a good reference - * on what is to be done. - * - When installing as a module, don't simply 'printk' text, but - * send it to the TTY used by the user. - * - * THANKS TO: - * - Jukka Marin (65EC02 code). - * - The other NetBSD developers on whose A2232 driver I had a - * pretty close look. However, I didn't copy any code so it - * is okay to put my code under the GPL and include it into - * Linux. - */ -/***************************** End of Documentation *****************/ - -/***************************** Defines ******************************/ -/* - * Enables experimental 115200 (normal) 230400 (turbo) baud rate. - * The A2232 specification states it can only operate at speeds up to - * 19200 bits per second, and I was not able to send a file via - * "sz"/"rz" and a null-modem cable from one A2232 port to another - * at 115200 bits per second. - * However, this might work for you. - */ -#undef A2232_SPEEDHACK -/* - * Default is not to use RTS/CTS so you could be talked to death. - */ -#define A2232_SUPPRESS_RTSCTS_WARNING -/************************* End of Defines ***************************/ - -/***************************** Includes *****************************/ -#include - -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include - -#include "ser_a2232.h" -#include "ser_a2232fw.h" -/************************* End of Includes **************************/ - -/***************************** Prototypes ***************************/ -/* The interrupt service routine */ -static irqreturn_t a2232_vbl_inter(int irq, void *data); -/* Initialize the port structures */ -static void a2232_init_portstructs(void); -/* Initialize and register TTY drivers. */ -/* returns 0 IFF successful */ -static int a2232_init_drivers(void); - -/* BEGIN GENERIC_SERIAL PROTOTYPES */ -static void a2232_disable_tx_interrupts(void *ptr); -static void a2232_enable_tx_interrupts(void *ptr); -static void a2232_disable_rx_interrupts(void *ptr); -static void a2232_enable_rx_interrupts(void *ptr); -static int a2232_carrier_raised(struct tty_port *port); -static void a2232_shutdown_port(void *ptr); -static int a2232_set_real_termios(void *ptr); -static int a2232_chars_in_buffer(void *ptr); -static void a2232_close(void *ptr); -static void a2232_hungup(void *ptr); -/* static void a2232_getserial (void *ptr, struct serial_struct *sp); */ -/* END GENERIC_SERIAL PROTOTYPES */ - -/* Functions that the TTY driver struct expects */ -static int a2232_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg); -static void a2232_throttle(struct tty_struct *tty); -static void a2232_unthrottle(struct tty_struct *tty); -static int a2232_open(struct tty_struct * tty, struct file * filp); -/************************* End of Prototypes ************************/ - -/***************************** Global variables *********************/ -/*--------------------------------------------------------------------------- - * Interface from generic_serial.c back here - *--------------------------------------------------------------------------*/ -static struct real_driver a2232_real_driver = { - a2232_disable_tx_interrupts, - a2232_enable_tx_interrupts, - a2232_disable_rx_interrupts, - a2232_enable_rx_interrupts, - a2232_shutdown_port, - a2232_set_real_termios, - a2232_chars_in_buffer, - a2232_close, - a2232_hungup, - NULL /* a2232_getserial */ -}; - -static void *a2232_driver_ID = &a2232_driver_ID; // Some memory address WE own. - -/* Ports structs */ -static struct a2232_port a2232_ports[MAX_A2232_BOARDS*NUMLINES]; - -/* TTY driver structs */ -static struct tty_driver *a2232_driver; - -/* nr of cards completely (all ports) and correctly configured */ -static int nr_a2232; - -/* zorro_dev structs for the A2232's */ -static struct zorro_dev *zd_a2232[MAX_A2232_BOARDS]; -/***************************** End of Global variables **************/ - -/* Helper functions */ - -static inline volatile struct a2232memory *a2232mem(unsigned int board) -{ - return (volatile struct a2232memory *)ZTWO_VADDR(zd_a2232[board]->resource.start); -} - -static inline volatile struct a2232status *a2232stat(unsigned int board, - unsigned int portonboard) -{ - volatile struct a2232memory *mem = a2232mem(board); - return &(mem->Status[portonboard]); -} - -static inline void a2232_receive_char(struct a2232_port *port, int ch, int err) -{ -/* Mostly stolen from other drivers. - Maybe one could implement a more efficient version by not only - transferring one character at a time. -*/ - struct tty_struct *tty = port->gs.port.tty; - -#if 0 - switch(err) { - case TTY_BREAK: - break; - case TTY_PARITY: - break; - case TTY_OVERRUN: - break; - case TTY_FRAME: - break; - } -#endif - - tty_insert_flip_char(tty, ch, err); - tty_flip_buffer_push(tty); -} - -/***************************** Functions ****************************/ -/*** BEGIN OF REAL_DRIVER FUNCTIONS ***/ - -static void a2232_disable_tx_interrupts(void *ptr) -{ - struct a2232_port *port; - volatile struct a2232status *stat; - unsigned long flags; - - port = ptr; - stat = a2232stat(port->which_a2232, port->which_port_on_a2232); - stat->OutDisable = -1; - - /* Does this here really have to be? */ - local_irq_save(flags); - port->gs.port.flags &= ~GS_TX_INTEN; - local_irq_restore(flags); -} - -static void a2232_enable_tx_interrupts(void *ptr) -{ - struct a2232_port *port; - volatile struct a2232status *stat; - unsigned long flags; - - port = ptr; - stat = a2232stat(port->which_a2232, port->which_port_on_a2232); - stat->OutDisable = 0; - - /* Does this here really have to be? */ - local_irq_save(flags); - port->gs.port.flags |= GS_TX_INTEN; - local_irq_restore(flags); -} - -static void a2232_disable_rx_interrupts(void *ptr) -{ - struct a2232_port *port; - port = ptr; - port->disable_rx = -1; -} - -static void a2232_enable_rx_interrupts(void *ptr) -{ - struct a2232_port *port; - port = ptr; - port->disable_rx = 0; -} - -static int a2232_carrier_raised(struct tty_port *port) -{ - struct a2232_port *ap = container_of(port, struct a2232_port, gs.port); - return ap->cd_status; -} - -static void a2232_shutdown_port(void *ptr) -{ - struct a2232_port *port; - volatile struct a2232status *stat; - unsigned long flags; - - port = ptr; - stat = a2232stat(port->which_a2232, port->which_port_on_a2232); - - local_irq_save(flags); - - port->gs.port.flags &= ~GS_ACTIVE; - - if (port->gs.port.tty && port->gs.port.tty->termios->c_cflag & HUPCL) { - /* Set DTR and RTS to Low, flush output. - The NetBSD driver "msc.c" does it this way. */ - stat->Command = ( (stat->Command & ~A2232CMD_CMask) | - A2232CMD_Close ); - stat->OutFlush = -1; - stat->Setup = -1; - } - - local_irq_restore(flags); - - /* After analyzing control flow, I think a2232_shutdown_port - is actually the last call from the system when at application - level someone issues a "echo Hello >>/dev/ttyY0". - Therefore I think the MOD_DEC_USE_COUNT should be here and - not in "a2232_close()". See the comment in "sx.c", too. - If you run into problems, compile this driver into the - kernel instead of compiling it as a module. */ -} - -static int a2232_set_real_termios(void *ptr) -{ - unsigned int cflag, baud, chsize, stopb, parity, softflow; - int rate; - int a2232_param, a2232_cmd; - unsigned long flags; - unsigned int i; - struct a2232_port *port = ptr; - volatile struct a2232status *status; - volatile struct a2232memory *mem; - - if (!port->gs.port.tty || !port->gs.port.tty->termios) return 0; - - status = a2232stat(port->which_a2232, port->which_port_on_a2232); - mem = a2232mem(port->which_a2232); - - a2232_param = a2232_cmd = 0; - - // get baud rate - baud = port->gs.baud; - if (baud == 0) { - /* speed == 0 -> drop DTR, do nothing else */ - local_irq_save(flags); - // Clear DTR (and RTS... mhhh). - status->Command = ( (status->Command & ~A2232CMD_CMask) | - A2232CMD_Close ); - status->OutFlush = -1; - status->Setup = -1; - - local_irq_restore(flags); - return 0; - } - - rate = A2232_BAUD_TABLE_NOAVAIL; - for (i=0; i < A2232_BAUD_TABLE_NUM_RATES * 3; i += 3){ - if (a2232_baud_table[i] == baud){ - if (mem->Common.Crystal == A2232_TURBO) rate = a2232_baud_table[i+2]; - else rate = a2232_baud_table[i+1]; - } - } - if (rate == A2232_BAUD_TABLE_NOAVAIL){ - printk("a2232: Board %d Port %d unsupported baud rate: %d baud. Using another.\n",port->which_a2232,port->which_port_on_a2232,baud); - // This is useful for both (turbo or normal) Crystal versions. - rate = A2232PARAM_B9600; - } - a2232_param |= rate; - - cflag = port->gs.port.tty->termios->c_cflag; - - // get character size - chsize = cflag & CSIZE; - switch (chsize){ - case CS8: a2232_param |= A2232PARAM_8Bit; break; - case CS7: a2232_param |= A2232PARAM_7Bit; break; - case CS6: a2232_param |= A2232PARAM_6Bit; break; - case CS5: a2232_param |= A2232PARAM_5Bit; break; - default: printk("a2232: Board %d Port %d unsupported character size: %d. Using 8 data bits.\n", - port->which_a2232,port->which_port_on_a2232,chsize); - a2232_param |= A2232PARAM_8Bit; break; - } - - // get number of stop bits - stopb = cflag & CSTOPB; - if (stopb){ // two stop bits instead of one - printk("a2232: Board %d Port %d 2 stop bits unsupported. Using 1 stop bit.\n", - port->which_a2232,port->which_port_on_a2232); - } - - // Warn if RTS/CTS not wanted - if (!(cflag & CRTSCTS)){ -#ifndef A2232_SUPPRESS_RTSCTS_WARNING - printk("a2232: Board %d Port %d cannot switch off firmware-implemented RTS/CTS hardware flow control.\n", - port->which_a2232,port->which_port_on_a2232); -#endif - } - - /* I think this is correct. - However, IXOFF means _input_ flow control and I wonder - if one should care about IXON _output_ flow control, - too. If this makes problems, one should turn the A2232 - firmware XON/XOFF "SoftFlow" flow control off and use - the conventional way of inserting START/STOP characters - by hand in throttle()/unthrottle(). - */ - softflow = !!( port->gs.port.tty->termios->c_iflag & IXOFF ); - - // get Parity (Enabled/Disabled? If Enabled, Odd or Even?) - parity = cflag & (PARENB | PARODD); - if (parity & PARENB){ - if (parity & PARODD){ - a2232_cmd |= A2232CMD_OddParity; - } - else{ - a2232_cmd |= A2232CMD_EvenParity; - } - } - else a2232_cmd |= A2232CMD_NoParity; - - - /* Hmm. Maybe an own a2232_port structure - member would be cleaner? */ - if (cflag & CLOCAL) - port->gs.port.flags &= ~ASYNC_CHECK_CD; - else - port->gs.port.flags |= ASYNC_CHECK_CD; - - - /* Now we have all parameters and can go to set them: */ - local_irq_save(flags); - - status->Param = a2232_param | A2232PARAM_RcvBaud; - status->Command = a2232_cmd | A2232CMD_Open | A2232CMD_Enable; - status->SoftFlow = softflow; - status->OutDisable = 0; - status->Setup = -1; - - local_irq_restore(flags); - return 0; -} - -static int a2232_chars_in_buffer(void *ptr) -{ - struct a2232_port *port; - volatile struct a2232status *status; - unsigned char ret; /* we need modulo-256 arithmetics */ - port = ptr; - status = a2232stat(port->which_a2232, port->which_port_on_a2232); -#if A2232_IOBUFLEN != 256 -#error "Re-Implement a2232_chars_in_buffer()!" -#endif - ret = (status->OutHead - status->OutTail); - return ret; -} - -static void a2232_close(void *ptr) -{ - a2232_disable_tx_interrupts(ptr); - a2232_disable_rx_interrupts(ptr); - /* see the comment in a2232_shutdown_port above. */ -} - -static void a2232_hungup(void *ptr) -{ - a2232_close(ptr); -} -/*** END OF REAL_DRIVER FUNCTIONS ***/ - -/*** BEGIN FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/ -static int a2232_ioctl( struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - return -ENOIOCTLCMD; -} - -static void a2232_throttle(struct tty_struct *tty) -{ -/* Throttle: System cannot take another chars: Drop RTS or - send the STOP char or whatever. - The A2232 firmware does RTS/CTS anyway, and XON/XOFF - if switched on. So the only thing we can do at this - layer here is not taking any characters out of the - A2232 buffer any more. */ - struct a2232_port *port = tty->driver_data; - port->throttle_input = -1; -} - -static void a2232_unthrottle(struct tty_struct *tty) -{ -/* Unthrottle: dual to "throttle()" above. */ - struct a2232_port *port = tty->driver_data; - port->throttle_input = 0; -} - -static int a2232_open(struct tty_struct * tty, struct file * filp) -{ -/* More or less stolen from other drivers. */ - int line; - int retval; - struct a2232_port *port; - - line = tty->index; - port = &a2232_ports[line]; - - tty->driver_data = port; - port->gs.port.tty = tty; - port->gs.port.count++; - retval = gs_init_port(&port->gs); - if (retval) { - port->gs.port.count--; - return retval; - } - port->gs.port.flags |= GS_ACTIVE; - retval = gs_block_til_ready(port, filp); - - if (retval) { - port->gs.port.count--; - return retval; - } - - a2232_enable_rx_interrupts(port); - - return 0; -} -/*** END OF FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/ - -static irqreturn_t a2232_vbl_inter(int irq, void *data) -{ -#if A2232_IOBUFLEN != 256 -#error "Re-Implement a2232_vbl_inter()!" -#endif - -struct a2232_port *port; -volatile struct a2232memory *mem; -volatile struct a2232status *status; -unsigned char newhead; -unsigned char bufpos; /* Must be unsigned char. We need the modulo-256 arithmetics */ -unsigned char ncd, ocd, ccd; /* names consistent with the NetBSD driver */ -volatile u_char *ibuf, *cbuf, *obuf; -int ch, err, n, p; - for (n = 0; n < nr_a2232; n++){ /* for every completely initialized A2232 board */ - mem = a2232mem(n); - for (p = 0; p < NUMLINES; p++){ /* for every port on this board */ - err = 0; - port = &a2232_ports[n*NUMLINES+p]; - if ( port->gs.port.flags & GS_ACTIVE ){ /* if the port is used */ - - status = a2232stat(n,p); - - if (!port->disable_rx && !port->throttle_input){ /* If input is not disabled */ - newhead = status->InHead; /* 65EC02 write pointer */ - bufpos = status->InTail; - - /* check for input for this port */ - if (newhead != bufpos) { - /* buffer for input chars/events */ - ibuf = mem->InBuf[p]; - - /* data types of bytes in ibuf */ - cbuf = mem->InCtl[p]; - - /* do for all chars */ - while (bufpos != newhead) { - /* which type of input data? */ - switch (cbuf[bufpos]) { - /* switch on input event (CD, BREAK, etc.) */ - case A2232INCTL_EVENT: - switch (ibuf[bufpos++]) { - case A2232EVENT_Break: - /* TODO: Handle BREAK signal */ - break; - /* A2232EVENT_CarrierOn and A2232EVENT_CarrierOff are - handled in a separate queue and should not occur here. */ - case A2232EVENT_Sync: - printk("A2232: 65EC02 software sent SYNC event, don't know what to do. Ignoring."); - break; - default: - printk("A2232: 65EC02 software broken, unknown event type %d occurred.\n",ibuf[bufpos-1]); - } /* event type switch */ - break; - case A2232INCTL_CHAR: - /* Receive incoming char */ - a2232_receive_char(port, ibuf[bufpos], err); - bufpos++; - break; - default: - printk("A2232: 65EC02 software broken, unknown data type %d occurred.\n",cbuf[bufpos]); - bufpos++; - } /* switch on input data type */ - } /* while there's something in the buffer */ - - status->InTail = bufpos; /* tell 65EC02 what we've read */ - - } /* if there was something in the buffer */ - } /* If input is not disabled */ - - /* Now check if there's something to output */ - obuf = mem->OutBuf[p]; - bufpos = status->OutHead; - while ( (port->gs.xmit_cnt > 0) && - (!port->gs.port.tty->stopped) && - (!port->gs.port.tty->hw_stopped) ){ /* While there are chars to transmit */ - if (((bufpos+1) & A2232_IOBUFLENMASK) != status->OutTail) { /* If the A2232 buffer is not full */ - ch = port->gs.xmit_buf[port->gs.xmit_tail]; /* get the next char to transmit */ - port->gs.xmit_tail = (port->gs.xmit_tail+1) & (SERIAL_XMIT_SIZE-1); /* modulo-addition for the gs.xmit_buf ring-buffer */ - obuf[bufpos++] = ch; /* put it into the A2232 buffer */ - port->gs.xmit_cnt--; - } - else{ /* If A2232 the buffer is full */ - break; /* simply stop filling it. */ - } - } - status->OutHead = bufpos; - - /* WakeUp if output buffer runs low */ - if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) { - tty_wakeup(port->gs.port.tty); - } - } // if the port is used - } // for every port on the board - - /* Now check the CD message queue */ - newhead = mem->Common.CDHead; - bufpos = mem->Common.CDTail; - if (newhead != bufpos){ /* There are CD events in queue */ - ocd = mem->Common.CDStatus; /* get old status bits */ - while (newhead != bufpos){ /* read all events */ - ncd = mem->CDBuf[bufpos++]; /* get one event */ - ccd = ncd ^ ocd; /* mask of changed lines */ - ocd = ncd; /* save new status bits */ - for(p=0; p < NUMLINES; p++){ /* for all ports */ - if (ccd & 1){ /* this one changed */ - - struct a2232_port *port = &a2232_ports[n*7+p]; - port->cd_status = !(ncd & 1); /* ncd&1 <=> CD is now off */ - - if (!(port->gs.port.flags & ASYNC_CHECK_CD)) - ; /* Don't report DCD changes */ - else if (port->cd_status) { // if DCD on: DCD went UP! - - /* Are we blocking in open?*/ - wake_up_interruptible(&port->gs.port.open_wait); - } - else { // if DCD off: DCD went DOWN! - if (port->gs.port.tty) - tty_hangup (port->gs.port.tty); - } - - } // if CD changed for this port - ccd >>= 1; - ncd >>= 1; /* Shift bits for next line */ - } // for every port - } // while CD events in queue - mem->Common.CDStatus = ocd; /* save new status */ - mem->Common.CDTail = bufpos; /* remove events */ - } // if events in CD queue - - } // for every completely initialized A2232 board - return IRQ_HANDLED; -} - -static const struct tty_port_operations a2232_port_ops = { - .carrier_raised = a2232_carrier_raised, -}; - -static void a2232_init_portstructs(void) -{ - struct a2232_port *port; - int i; - - for (i = 0; i < MAX_A2232_BOARDS*NUMLINES; i++) { - port = a2232_ports + i; - tty_port_init(&port->gs.port); - port->gs.port.ops = &a2232_port_ops; - port->which_a2232 = i/NUMLINES; - port->which_port_on_a2232 = i%NUMLINES; - port->disable_rx = port->throttle_input = port->cd_status = 0; - port->gs.magic = A2232_MAGIC; - port->gs.close_delay = HZ/2; - port->gs.closing_wait = 30 * HZ; - port->gs.rd = &a2232_real_driver; - } -} - -static const struct tty_operations a2232_ops = { - .open = a2232_open, - .close = gs_close, - .write = gs_write, - .put_char = gs_put_char, - .flush_chars = gs_flush_chars, - .write_room = gs_write_room, - .chars_in_buffer = gs_chars_in_buffer, - .flush_buffer = gs_flush_buffer, - .ioctl = a2232_ioctl, - .throttle = a2232_throttle, - .unthrottle = a2232_unthrottle, - .set_termios = gs_set_termios, - .stop = gs_stop, - .start = gs_start, - .hangup = gs_hangup, -}; - -static int a2232_init_drivers(void) -{ - int error; - - a2232_driver = alloc_tty_driver(NUMLINES * nr_a2232); - if (!a2232_driver) - return -ENOMEM; - a2232_driver->owner = THIS_MODULE; - a2232_driver->driver_name = "commodore_a2232"; - a2232_driver->name = "ttyY"; - a2232_driver->major = A2232_NORMAL_MAJOR; - a2232_driver->type = TTY_DRIVER_TYPE_SERIAL; - a2232_driver->subtype = SERIAL_TYPE_NORMAL; - a2232_driver->init_termios = tty_std_termios; - a2232_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - a2232_driver->init_termios.c_ispeed = 9600; - a2232_driver->init_termios.c_ospeed = 9600; - a2232_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(a2232_driver, &a2232_ops); - if ((error = tty_register_driver(a2232_driver))) { - printk(KERN_ERR "A2232: Couldn't register A2232 driver, error = %d\n", - error); - put_tty_driver(a2232_driver); - return 1; - } - return 0; -} - -static int __init a2232board_init(void) -{ - struct zorro_dev *z; - - unsigned int boardaddr; - int bcount; - short start; - u_char *from; - volatile u_char *to; - volatile struct a2232memory *mem; - int error, i; - -#ifdef CONFIG_SMP - return -ENODEV; /* This driver is not SMP aware. Is there an SMP ZorroII-bus-machine? */ -#endif - - if (!MACH_IS_AMIGA){ - return -ENODEV; - } - - printk("Commodore A2232 driver initializing.\n"); /* Say that we're alive. */ - - z = NULL; - nr_a2232 = 0; - while ( (z = zorro_find_device(ZORRO_WILDCARD, z)) ){ - if ( (z->id != ZORRO_PROD_CBM_A2232_PROTOTYPE) && - (z->id != ZORRO_PROD_CBM_A2232) ){ - continue; // The board found was no A2232 - } - if (!zorro_request_device(z,"A2232 driver")) - continue; - - printk("Commodore A2232 found (#%d).\n",nr_a2232); - - zd_a2232[nr_a2232] = z; - - boardaddr = ZTWO_VADDR( z->resource.start ); - printk("Board is located at address 0x%x, size is 0x%x.\n", boardaddr, (unsigned int) ((z->resource.end+1) - (z->resource.start))); - - mem = (volatile struct a2232memory *) boardaddr; - - (void) mem->Enable6502Reset; /* copy the code across to the board */ - to = (u_char *)mem; from = a2232_65EC02code; bcount = sizeof(a2232_65EC02code) - 2; - start = *(short *)from; - from += sizeof(start); - to += start; - while(bcount--) *to++ = *from++; - printk("65EC02 software uploaded to the A2232 memory.\n"); - - mem->Common.Crystal = A2232_UNKNOWN; /* use automatic speed check */ - - /* start 6502 running */ - (void) mem->ResetBoard; - printk("A2232's 65EC02 CPU up and running.\n"); - - /* wait until speed detector has finished */ - for (bcount = 0; bcount < 2000; bcount++) { - udelay(1000); - if (mem->Common.Crystal) - break; - } - printk((mem->Common.Crystal?"A2232 oscillator crystal detected by 65EC02 software: ":"65EC02 software could not determine A2232 oscillator crystal: ")); - switch (mem->Common.Crystal){ - case A2232_UNKNOWN: - printk("Unknown crystal.\n"); - break; - case A2232_NORMAL: - printk ("Normal crystal.\n"); - break; - case A2232_TURBO: - printk ("Turbo crystal.\n"); - break; - default: - printk ("0x%x. Huh?\n",mem->Common.Crystal); - } - - nr_a2232++; - - } - - printk("Total: %d A2232 boards initialized.\n", nr_a2232); /* Some status report if no card was found */ - - a2232_init_portstructs(); - - /* - a2232_init_drivers also registers the drivers. Must be here because all boards - have to be detected first. - */ - if (a2232_init_drivers()) return -ENODEV; // maybe we should use a different -Exxx? - - error = request_irq(IRQ_AMIGA_VERTB, a2232_vbl_inter, 0, - "A2232 serial VBL", a2232_driver_ID); - if (error) { - for (i = 0; i < nr_a2232; i++) - zorro_release_device(zd_a2232[i]); - tty_unregister_driver(a2232_driver); - put_tty_driver(a2232_driver); - } - return error; -} - -static void __exit a2232board_exit(void) -{ - int i; - - for (i = 0; i < nr_a2232; i++) { - zorro_release_device(zd_a2232[i]); - } - - tty_unregister_driver(a2232_driver); - put_tty_driver(a2232_driver); - free_irq(IRQ_AMIGA_VERTB, a2232_driver_ID); -} - -module_init(a2232board_init); -module_exit(a2232board_exit); - -MODULE_AUTHOR("Enver Haase"); -MODULE_DESCRIPTION("Amiga A2232 multi-serial board driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/char/ser_a2232.h b/drivers/char/ser_a2232.h deleted file mode 100644 index bc09eb9e118b..000000000000 --- a/drivers/char/ser_a2232.h +++ /dev/null @@ -1,202 +0,0 @@ -/* drivers/char/ser_a2232.h */ - -/* $Id: ser_a2232.h,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */ - -/* Linux serial driver for the Amiga A2232 board */ - -/* This driver is MAINTAINED. Before applying any changes, please contact - * the author. - */ - -/* Copyright (c) 2000-2001 Enver Haase - * alias The A2232 driver project - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#ifndef _SER_A2232_H_ -#define _SER_A2232_H_ - -/* - How many boards are to be supported at maximum; - "up to five A2232 Multiport Serial Cards may be installed in a - single Amiga 2000" states the A2232 User's Guide. If you have - more slots available, you might want to change the value below. -*/ -#define MAX_A2232_BOARDS 5 - -#ifndef A2232_NORMAL_MAJOR -/* This allows overriding on the compiler commandline, or in a "major.h" - include or something like that */ -#define A2232_NORMAL_MAJOR 224 /* /dev/ttyY* */ -#define A2232_CALLOUT_MAJOR 225 /* /dev/cuy* */ -#endif - -/* Some magic is always good - Who knows :) */ -#define A2232_MAGIC 0x000a2232 - -/* A2232 port structure to keep track of the - status of every single line used */ -struct a2232_port{ - struct gs_port gs; - unsigned int which_a2232; - unsigned int which_port_on_a2232; - short disable_rx; - short throttle_input; - short cd_status; -}; - -#define NUMLINES 7 /* number of lines per board */ -#define A2232_IOBUFLEN 256 /* number of bytes per buffer */ -#define A2232_IOBUFLENMASK 0xff /* mask for maximum number of bytes */ - - -#define A2232_UNKNOWN 0 /* crystal not known */ -#define A2232_NORMAL 1 /* normal A2232 (1.8432 MHz oscillator) */ -#define A2232_TURBO 2 /* turbo A2232 (3.6864 MHz oscillator) */ - - -struct a2232common { - char Crystal; /* normal (1) or turbo (2) board? */ - u_char Pad_a; - u_char TimerH; /* timer value after speed check */ - u_char TimerL; - u_char CDHead; /* head pointer for CD message queue */ - u_char CDTail; /* tail pointer for CD message queue */ - u_char CDStatus; - u_char Pad_b; -}; - -struct a2232status { - u_char InHead; /* input queue head */ - u_char InTail; /* input queue tail */ - u_char OutDisable; /* disables output */ - u_char OutHead; /* output queue head */ - u_char OutTail; /* output queue tail */ - u_char OutCtrl; /* soft flow control character to send */ - u_char OutFlush; /* flushes output buffer */ - u_char Setup; /* causes reconfiguration */ - u_char Param; /* parameter byte - see A2232PARAM */ - u_char Command; /* command byte - see A2232CMD */ - u_char SoftFlow; /* enables xon/xoff flow control */ - /* private 65EC02 fields: */ - u_char XonOff; /* stores XON/XOFF enable/disable */ -}; - -#define A2232_MEMPAD1 \ - (0x0200 - NUMLINES * sizeof(struct a2232status) - \ - sizeof(struct a2232common)) -#define A2232_MEMPAD2 (0x2000 - NUMLINES * A2232_IOBUFLEN - A2232_IOBUFLEN) - -struct a2232memory { - struct a2232status Status[NUMLINES]; /* 0x0000-0x006f status areas */ - struct a2232common Common; /* 0x0070-0x0077 common flags */ - u_char Dummy1[A2232_MEMPAD1]; /* 0x00XX-0x01ff */ - u_char OutBuf[NUMLINES][A2232_IOBUFLEN];/* 0x0200-0x08ff output bufs */ - u_char InBuf[NUMLINES][A2232_IOBUFLEN]; /* 0x0900-0x0fff input bufs */ - u_char InCtl[NUMLINES][A2232_IOBUFLEN]; /* 0x1000-0x16ff control data */ - u_char CDBuf[A2232_IOBUFLEN]; /* 0x1700-0x17ff CD event buffer */ - u_char Dummy2[A2232_MEMPAD2]; /* 0x1800-0x2fff */ - u_char Code[0x1000]; /* 0x3000-0x3fff code area */ - u_short InterruptAck; /* 0x4000 intr ack */ - u_char Dummy3[0x3ffe]; /* 0x4002-0x7fff */ - u_short Enable6502Reset; /* 0x8000 Stop board, */ - /* 6502 RESET line held low */ - u_char Dummy4[0x3ffe]; /* 0x8002-0xbfff */ - u_short ResetBoard; /* 0xc000 reset board & run, */ - /* 6502 RESET line held high */ -}; - -#undef A2232_MEMPAD1 -#undef A2232_MEMPAD2 - -#define A2232INCTL_CHAR 0 /* corresponding byte in InBuf is a character */ -#define A2232INCTL_EVENT 1 /* corresponding byte in InBuf is an event */ - -#define A2232EVENT_Break 1 /* break set */ -#define A2232EVENT_CarrierOn 2 /* carrier raised */ -#define A2232EVENT_CarrierOff 3 /* carrier dropped */ -#define A2232EVENT_Sync 4 /* don't know, defined in 2232.ax */ - -#define A2232CMD_Enable 0x1 /* enable/DTR bit */ -#define A2232CMD_Close 0x2 /* close the device */ -#define A2232CMD_Open 0xb /* open the device */ -#define A2232CMD_CMask 0xf /* command mask */ -#define A2232CMD_RTSOff 0x0 /* turn off RTS */ -#define A2232CMD_RTSOn 0x8 /* turn on RTS */ -#define A2232CMD_Break 0xd /* transmit a break */ -#define A2232CMD_RTSMask 0xc /* mask for RTS stuff */ -#define A2232CMD_NoParity 0x00 /* don't use parity */ -#define A2232CMD_OddParity 0x20 /* odd parity */ -#define A2232CMD_EvenParity 0x60 /* even parity */ -#define A2232CMD_ParityMask 0xe0 /* parity mask */ - -#define A2232PARAM_B115200 0x0 /* baud rates */ -#define A2232PARAM_B50 0x1 -#define A2232PARAM_B75 0x2 -#define A2232PARAM_B110 0x3 -#define A2232PARAM_B134 0x4 -#define A2232PARAM_B150 0x5 -#define A2232PARAM_B300 0x6 -#define A2232PARAM_B600 0x7 -#define A2232PARAM_B1200 0x8 -#define A2232PARAM_B1800 0x9 -#define A2232PARAM_B2400 0xa -#define A2232PARAM_B3600 0xb -#define A2232PARAM_B4800 0xc -#define A2232PARAM_B7200 0xd -#define A2232PARAM_B9600 0xe -#define A2232PARAM_B19200 0xf -#define A2232PARAM_BaudMask 0xf /* baud rate mask */ -#define A2232PARAM_RcvBaud 0x10 /* enable receive baud rate */ -#define A2232PARAM_8Bit 0x00 /* numbers of bits */ -#define A2232PARAM_7Bit 0x20 -#define A2232PARAM_6Bit 0x40 -#define A2232PARAM_5Bit 0x60 -#define A2232PARAM_BitMask 0x60 /* numbers of bits mask */ - - -/* Standard speeds tables, -1 means unavailable, -2 means 0 baud: switch off line */ -#define A2232_BAUD_TABLE_NOAVAIL -1 -#define A2232_BAUD_TABLE_NUM_RATES (18) -static int a2232_baud_table[A2232_BAUD_TABLE_NUM_RATES*3] = { - //Baud //Normal //Turbo - 50, A2232PARAM_B50, A2232_BAUD_TABLE_NOAVAIL, - 75, A2232PARAM_B75, A2232_BAUD_TABLE_NOAVAIL, - 110, A2232PARAM_B110, A2232_BAUD_TABLE_NOAVAIL, - 134, A2232PARAM_B134, A2232_BAUD_TABLE_NOAVAIL, - 150, A2232PARAM_B150, A2232PARAM_B75, - 200, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL, - 300, A2232PARAM_B300, A2232PARAM_B150, - 600, A2232PARAM_B600, A2232PARAM_B300, - 1200, A2232PARAM_B1200, A2232PARAM_B600, - 1800, A2232PARAM_B1800, A2232_BAUD_TABLE_NOAVAIL, - 2400, A2232PARAM_B2400, A2232PARAM_B1200, - 4800, A2232PARAM_B4800, A2232PARAM_B2400, - 9600, A2232PARAM_B9600, A2232PARAM_B4800, - 19200, A2232PARAM_B19200, A2232PARAM_B9600, - 38400, A2232_BAUD_TABLE_NOAVAIL, A2232PARAM_B19200, - 57600, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL, -#ifdef A2232_SPEEDHACK - 115200, A2232PARAM_B115200, A2232_BAUD_TABLE_NOAVAIL, - 230400, A2232_BAUD_TABLE_NOAVAIL, A2232PARAM_B115200 -#else - 115200, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL, - 230400, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL -#endif -}; -#endif diff --git a/drivers/char/ser_a2232fw.ax b/drivers/char/ser_a2232fw.ax deleted file mode 100644 index 736438032768..000000000000 --- a/drivers/char/ser_a2232fw.ax +++ /dev/null @@ -1,529 +0,0 @@ -;.lib "axm" -; -;begin -;title "A2232 serial board driver" -; -;set modules "2232" -;set executable "2232.bin" -; -;;;;set nolink -; -;set temporary directory "t:" -; -;set assembly options "-m6502 -l60:t:list" -;set link options "bin"; loadadr" -;;;bin2c 2232.bin msc6502.h msc6502code -;end -; -; -; ### Commodore A2232 serial board driver for NetBSD by JM v1.3 ### -; -; - Created 950501 by JM - -; -; -; Serial board driver software. -; -; -% Copyright (c) 1995 Jukka Marin . -% All rights reserved. -% -% Redistribution and use in source and binary forms, with or without -% modification, are permitted provided that the following conditions -% are met: -% 1. Redistributions of source code must retain the above copyright -% notice, and the entire permission notice in its entirety, -% including the disclaimer of warranties. -% 2. Redistributions in binary form must reproduce the above copyright -% notice, this list of conditions and the following disclaimer in the -% documentation and/or other materials provided with the distribution. -% 3. The name of the author may not be used to endorse or promote -% products derived from this software without specific prior -% written permission. -% -% ALTERNATIVELY, this product may be distributed under the terms of -% the GNU General Public License, in which case the provisions of the -% GPL are required INSTEAD OF the above restrictions. (This clause is -% necessary due to a potential bad interaction between the GPL and -% the restrictions contained in a BSD-style copyright.) -% -% THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED -% WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES -% OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -% DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, -% INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -% (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR -% SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -% HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, -% STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED -% OF THE POSSIBILITY OF SUCH DAMAGE. -; -; -; Bugs: -; -; - Can't send a break yet -; -; -; -; Edited: -; -; - 950501 by JM -> v0.1 - Created this file. -; - 951029 by JM -> v1.3 - Carrier Detect events now queued in a separate -; queue. -; -; - - -CODE equ $3800 ; start address for program code - - -CTL_CHAR equ $00 ; byte in ibuf is a character -CTL_EVENT equ $01 ; byte in ibuf is an event - -EVENT_BREAK equ $01 -EVENT_CDON equ $02 -EVENT_CDOFF equ $03 -EVENT_SYNC equ $04 - -XON equ $11 -XOFF equ $13 - - -VARBASE macro *starting_address ; was VARINIT -_varbase set \1 - endm - -VARDEF macro *name space_needs -\1 equ _varbase -_varbase set _varbase+\2 - endm - - -stz macro * address - db $64,\1 - endm - -stzax macro * address - db $9e,<\1,>\1 - endm - - -biti macro * immediate value - db $89,\1 - endm - -smb0 macro * address - db $87,\1 - endm -smb1 macro * address - db $97,\1 - endm -smb2 macro * address - db $a7,\1 - endm -smb3 macro * address - db $b7,\1 - endm -smb4 macro * address - db $c7,\1 - endm -smb5 macro * address - db $d7,\1 - endm -smb6 macro * address - db $e7,\1 - endm -smb7 macro * address - db $f7,\1 - endm - - - -;-----------------------------------------------------------------------; -; ; -; stuff common for all ports, non-critical (run once / loop) ; -; ; -DO_SLOW macro * port_number ; - .local ; ; - lda CIA+C_PA ; check all CD inputs ; - cmp CommonCDo ; changed from previous accptd? ; - beq =over ; nope, do nothing else here ; - ; ; - cmp CommonCDb ; bouncing? ; - beq =nobounce ; nope -> ; - ; ; - sta CommonCDb ; save current state ; - lda #64 ; reinitialize counter ; - sta CommonCDc ; ; - jmp =over ; skip CD save ; - ; ; -=nobounce dec CommonCDc ; no, decrement bounce counter ; - bpl =over ; not done yet, so skip CD save ; - ; ; -=saveCD ldx CDHead ; get write index ; - sta cdbuf,x ; save status in buffer ; - inx ; ; - cpx CDTail ; buffer full? ; - .if ne ; no: preserve status: ; - stx CDHead ; update index in RAM ; - sta CommonCDo ; save state for the next check ; - .end ; ; -=over .end local ; - endm ; - ; -;-----------------------------------------------------------------------; - - -; port specific stuff (no data transfer) - -DO_PORT macro * port_number - .local ; ; - lda SetUp\1 ; reconfiguration request? ; - .if ne ; yes: ; - lda SoftFlow\1 ; get XON/XOFF flag ; - sta XonOff\1 ; save it ; - lda Param\1 ; get parameter ; - ora #%00010000 ; use baud generator for Rx ; - sta ACIA\1+A_CTRL ; store in control register ; - stz OutDisable\1 ; enable transmit output ; - stz SetUp\1 ; no reconfiguration no more ; - .end ; ; - ; ; - lda InHead\1 ; get write index ; - sbc InTail\1 ; buffer full soon? ; - cmp #200 ; 200 chars or more in buffer? ; - lda Command\1 ; get Command reg value ; - and #%11110011 ; turn RTS OFF by default ; - .if cc ; still room in buffer: ; - ora #%00001000 ; turn RTS ON ; - .end ; ; - sta ACIA\1+A_CMD ; set/clear RTS ; - ; ; - lda OutFlush\1 ; request to flush output buffer; - .if ne ; yessh! ; - lda OutHead\1 ; get head ; - sta OutTail\1 ; save as tail ; - stz OutDisable\1 ; enable transmit output ; - stz OutFlush\1 ; clear request ; - .end - .end local - endm - - -DO_DATA macro * port number - .local - lda ACIA\1+A_SR ; read ACIA status register ; - biti [1<<3] ; something received? ; - .if ne ; yes: ; - biti [1<<1] ; framing error? ; - .if ne ; yes: ; - lda ACIA\1+A_DATA ; read received character ; - bne =SEND ; not break -> ignore it ; - ldx InHead\1 ; get write pointer ; - lda #CTL_EVENT ; get type of byte ; - sta ictl\1,x ; save it in InCtl buffer ; - lda #EVENT_BREAK ; event code ; - sta ibuf\1,x ; save it as well ; - inx ; ; - cpx InTail\1 ; still room in buffer? ; - .if ne ; absolutely: ; - stx InHead\1 ; update index in memory ; - .end ; ; - jmp =SEND ; go check if anything to send ; - .end ; ; - ; normal char received: ; - ldx InHead\1 ; get write index ; - lda ACIA\1+A_DATA ; read received character ; - sta ibuf\1,x ; save char in buffer ; - stzax ictl\1 ; set type to CTL_CHAR ; - inx ; ; - cpx InTail\1 ; buffer full? ; - .if ne ; no: preserve character: ; - stx InHead\1 ; update index in RAM ; - .end ; ; - and #$7f ; mask off parity if any ; - cmp #XOFF ; XOFF from remote host? ; - .if eq ; yes: ; - lda XonOff\1 ; if XON/XOFF handshaking.. ; - sta OutDisable\1 ; ..disable transmitter ; - .end ; ; - .end ; ; - ; ; - ; BUFFER FULL CHECK WAS HERE ; - ; ; -=SEND lda ACIA\1+A_SR ; transmit register empty? ; - and #[1<<4] ; ; - .if ne ; yes: ; - ldx OutCtrl\1 ; sending out XON/XOFF? ; - .if ne ; yes: ; - lda CIA+C_PB ; check CTS signal ; - and #[1<<\1] ; (for this port only) ; - bne =DONE ; not allowed to send -> done ; - stx ACIA\1+A_DATA ; transmit control char ; - stz OutCtrl\1 ; clear flag ; - jmp =DONE ; and we're done ; - .end ; ; - ; ; - ldx OutTail\1 ; anything to transmit? ; - cpx OutHead\1 ; ; - .if ne ; yes: ; - lda OutDisable\1 ; allowed to transmit? ; - .if eq ; yes: ; - lda CIA+C_PB ; check CTS signal ; - and #[1<<\1] ; (for this port only) ; - bne =DONE ; not allowed to send -> done ; - lda obuf\1,x ; get a char from buffer ; - sta ACIA\1+A_DATA ; send it away ; - inc OutTail\1 ; update read index ; - .end ; ; - .end ; ; - .end ; ; -=DONE .end local - endm - - - -PORTVAR macro * port number - VARDEF InHead\1 1 - VARDEF InTail\1 1 - VARDEF OutDisable\1 1 - VARDEF OutHead\1 1 - VARDEF OutTail\1 1 - VARDEF OutCtrl\1 1 - VARDEF OutFlush\1 1 - VARDEF SetUp\1 1 - VARDEF Param\1 1 - VARDEF Command\1 1 - VARDEF SoftFlow\1 1 - ; private: - VARDEF XonOff\1 1 - endm - - - VARBASE 0 ; start variables at address $0000 - PORTVAR 0 ; define variables for port 0 - PORTVAR 1 ; define variables for port 1 - PORTVAR 2 ; define variables for port 2 - PORTVAR 3 ; define variables for port 3 - PORTVAR 4 ; define variables for port 4 - PORTVAR 5 ; define variables for port 5 - PORTVAR 6 ; define variables for port 6 - - - - VARDEF Crystal 1 ; 0 = unknown, 1 = normal, 2 = turbo - VARDEF Pad_a 1 - VARDEF TimerH 1 - VARDEF TimerL 1 - VARDEF CDHead 1 - VARDEF CDTail 1 - VARDEF CDStatus 1 - VARDEF Pad_b 1 - - VARDEF CommonCDo 1 ; for carrier detect optimization - VARDEF CommonCDc 1 ; for carrier detect debouncing - VARDEF CommonCDb 1 ; for carrier detect debouncing - - - VARBASE $0200 - VARDEF obuf0 256 ; output data (characters only) - VARDEF obuf1 256 - VARDEF obuf2 256 - VARDEF obuf3 256 - VARDEF obuf4 256 - VARDEF obuf5 256 - VARDEF obuf6 256 - - VARDEF ibuf0 256 ; input data (characters, events etc - see ictl) - VARDEF ibuf1 256 - VARDEF ibuf2 256 - VARDEF ibuf3 256 - VARDEF ibuf4 256 - VARDEF ibuf5 256 - VARDEF ibuf6 256 - - VARDEF ictl0 256 ; input control information (type of data in ibuf) - VARDEF ictl1 256 - VARDEF ictl2 256 - VARDEF ictl3 256 - VARDEF ictl4 256 - VARDEF ictl5 256 - VARDEF ictl6 256 - - VARDEF cdbuf 256 ; CD event queue - - -ACIA0 equ $4400 -ACIA1 equ $4c00 -ACIA2 equ $5400 -ACIA3 equ $5c00 -ACIA4 equ $6400 -ACIA5 equ $6c00 -ACIA6 equ $7400 - -A_DATA equ $00 -A_SR equ $02 -A_CMD equ $04 -A_CTRL equ $06 -; 00 write transmit data read received data -; 02 reset ACIA read status register -; 04 write command register read command register -; 06 write control register read control register - -CIA equ $7c00 ; 8520 CIA -C_PA equ $00 ; port A data register -C_PB equ $02 ; port B data register -C_DDRA equ $04 ; data direction register for port A -C_DDRB equ $06 ; data direction register for port B -C_TAL equ $08 ; timer A -C_TAH equ $0a -C_TBL equ $0c ; timer B -C_TBH equ $0e -C_TODL equ $10 ; TOD LSB -C_TODM equ $12 ; TOD middle byte -C_TODH equ $14 ; TOD MSB -C_DATA equ $18 ; serial data register -C_INTCTRL equ $1a ; interrupt control register -C_CTRLA equ $1c ; control register A -C_CTRLB equ $1e ; control register B - - - - - - section main,code,CODE-2 - - db >CODE,. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, and the entire permission notice in its entirety, - * including the disclaimer of warranties. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote - * products derived from this software without specific prior - * written permission. - * - * ALTERNATIVELY, this product may be distributed under the terms of - * the GNU Public License, in which case the provisions of the GPL are - * required INSTEAD OF the above restrictions. (This clause is - * necessary due to a potential bad interaction between the GPL and - * the restrictions contained in a BSD-style copyright.) - * - * THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -/* This is the 65EC02 code by Jukka Marin that is executed by - the A2232's 65EC02 processor (base address: 0x3800) - Source file: ser_a2232fw.ax - Version: 1.3 (951029) - Known Bugs: Cannot send a break yet -*/ -static unsigned char a2232_65EC02code[] = { - 0x38, 0x00, 0xA2, 0xFF, 0x9A, 0xD8, 0xA2, 0x00, - 0xA9, 0x00, 0xA0, 0x54, 0x95, 0x00, 0xE8, 0x88, - 0xD0, 0xFA, 0x64, 0x5C, 0x64, 0x5E, 0x64, 0x58, - 0x64, 0x59, 0xA9, 0x00, 0x85, 0x55, 0xA9, 0xAA, - 0xC9, 0x64, 0x90, 0x02, 0xE6, 0x55, 0xA5, 0x54, - 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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xD0, 0xD0, 0x00, 0x38, - 0xCE, 0xC0, -}; diff --git a/drivers/char/sx.c b/drivers/char/sx.c deleted file mode 100644 index 1291462bcddb..000000000000 --- a/drivers/char/sx.c +++ /dev/null @@ -1,2894 +0,0 @@ -/* sx.c -- driver for the Specialix SX series cards. - * - * This driver will also support the older SI, and XIO cards. - * - * - * (C) 1998 - 2004 R.E.Wolff@BitWizard.nl - * - * Simon Allen (simonallen@cix.compulink.co.uk) wrote a previous - * version of this driver. Some fragments may have been copied. (none - * yet :-) - * - * Specialix pays for the development and support of this driver. - * Please DO contact support@specialix.co.uk if you require - * support. But please read the documentation (sx.txt) first. - * - * - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, - * USA. - * - * Revision history: - * Revision 1.33 2000/03/09 10:00:00 pvdl,wolff - * - Fixed module and port counting - * - Fixed signal handling - * - Fixed an Ooops - * - * Revision 1.32 2000/03/07 09:00:00 wolff,pvdl - * - Fixed some sx_dprintk typos - * - added detection for an invalid board/module configuration - * - * Revision 1.31 2000/03/06 12:00:00 wolff,pvdl - * - Added support for EISA - * - * Revision 1.30 2000/01/21 17:43:06 wolff - * - Added support for SX+ - * - * Revision 1.26 1999/08/05 15:22:14 wolff - * - Port to 2.3.x - * - Reformatted to Linus' liking. - * - * Revision 1.25 1999/07/30 14:24:08 wolff - * Had accidentally left "gs_debug" set to "-1" instead of "off" (=0). - * - * Revision 1.24 1999/07/28 09:41:52 wolff - * - I noticed the remark about use-count straying in sx.txt. I checked - * sx_open, and found a few places where that could happen. I hope it's - * fixed now. - * - * Revision 1.23 1999/07/28 08:56:06 wolff - * - Fixed crash when sx_firmware run twice. - * - Added sx_slowpoll as a module parameter (I guess nobody really wanted - * to change it from the default... ) - * - Fixed a stupid editing problem I introduced in 1.22. - * - Fixed dropping characters on a termios change. - * - * Revision 1.22 1999/07/26 21:01:43 wolff - * Russell Brown noticed that I had overlooked 4 out of six modem control - * signals in sx_getsignals. Ooops. - * - * Revision 1.21 1999/07/23 09:11:33 wolff - * I forgot to free dynamically allocated memory when the driver is unloaded. - * - * Revision 1.20 1999/07/20 06:25:26 wolff - * The "closing wait" wasn't honoured. Thanks to James Griffiths for - * reporting this. - * - * Revision 1.19 1999/07/11 08:59:59 wolff - * Fixed an oops in close, when an open was pending. Changed the memtest - * a bit. Should also test the board in word-mode, however my card fails the - * memtest then. I still have to figure out what is wrong... - * - * Revision 1.18 1999/06/10 09:38:42 wolff - * Changed the format of the firmware revision from %04x to %x.%02x . - * - * Revision 1.17 1999/06/04 09:44:35 wolff - * fixed problem: reference to pci stuff when config_pci was off... - * Thanks to Jorge Novo for noticing this. - * - * Revision 1.16 1999/06/02 08:30:15 wolff - * added/removed the workaround for the DCD bug in the Firmware. - * A bit more debugging code to locate that... - * - * Revision 1.15 1999/06/01 11:35:30 wolff - * when DCD is left low (floating?), on TA's the firmware first tells us - * that DCD is high, but after a short while suddenly comes to the - * conclusion that it is low. All this would be fine, if it weren't that - * Unix requires us to send a "hangup" signal in that case. This usually - * all happens BEFORE the program has had a chance to ioctl the device - * into clocal mode.. - * - * Revision 1.14 1999/05/25 11:18:59 wolff - * Added PCI-fix. - * Added checks for return code of sx_sendcommand. - * Don't issue "reconfig" if port isn't open yet. (bit us on TA modules...) - * - * Revision 1.13 1999/04/29 15:18:01 wolff - * Fixed an "oops" that showed on SuSE 6.0 systems. - * Activate DTR again after stty 0. - * - * Revision 1.12 1999/04/29 07:49:52 wolff - * Improved "stty 0" handling a bit. (used to change baud to 9600 assuming - * the connection would be dropped anyway. That is not always the case, - * and confuses people). - * Told the card to always monitor the modem signals. - * Added support for dynamic gs_debug adjustments. - * Now tells the rest of the system the number of ports. - * - * Revision 1.11 1999/04/24 11:11:30 wolff - * Fixed two stupid typos in the memory test. - * - * Revision 1.10 1999/04/24 10:53:39 wolff - * Added some of Christian's suggestions. - * Fixed an HW_COOK_IN bug (ISIG was not in I_OTHER. We used to trust the - * card to send the signal to the process.....) - * - * Revision 1.9 1999/04/23 07:26:38 wolff - * Included Christian Lademann's 2.0 compile-warning fixes and interrupt - * assignment redesign. - * Cleanup of some other stuff. - * - * Revision 1.8 1999/04/16 13:05:30 wolff - * fixed a DCD change unnoticed bug. - * - * Revision 1.7 1999/04/14 22:19:51 wolff - * Fixed typo that showed up in 2.0.x builds (get_user instead of Get_user!) - * - * Revision 1.6 1999/04/13 18:40:20 wolff - * changed misc-minor to 161, as assigned by HPA. - * - * Revision 1.5 1999/04/13 15:12:25 wolff - * Fixed use-count leak when "hangup" occurred. - * Added workaround for a stupid-PCIBIOS bug. - * - * - * Revision 1.4 1999/04/01 22:47:40 wolff - * Fixed < 1M linux-2.0 problem. - * (vremap isn't compatible with ioremap in that case) - * - * Revision 1.3 1999/03/31 13:45:45 wolff - * Firmware loading is now done through a separate IOCTL. - * - * Revision 1.2 1999/03/28 12:22:29 wolff - * rcs cleanup - * - * Revision 1.1 1999/03/28 12:10:34 wolff - * Readying for release on 2.0.x (sorry David, 1.01 becomes 1.1 for RCS). - * - * Revision 0.12 1999/03/28 09:20:10 wolff - * Fixed problem in 0.11, continueing cleanup. - * - * Revision 0.11 1999/03/28 08:46:44 wolff - * cleanup. Not good. - * - * Revision 0.10 1999/03/28 08:09:43 wolff - * Fixed loosing characters on close. - * - * Revision 0.9 1999/03/21 22:52:01 wolff - * Ported back to 2.2.... (minor things) - * - * Revision 0.8 1999/03/21 22:40:33 wolff - * Port to 2.0 - * - * Revision 0.7 1999/03/21 19:06:34 wolff - * Fixed hangup processing. - * - * Revision 0.6 1999/02/05 08:45:14 wolff - * fixed real_raw problems. Inclusion into kernel imminent. - * - * Revision 0.5 1998/12/21 23:51:06 wolff - * Snatched a nasty bug: sx_transmit_chars was getting re-entered, and it - * shouldn't have. THATs why I want to have transmit interrupts even when - * the buffer is empty. - * - * Revision 0.4 1998/12/17 09:34:46 wolff - * PPP works. ioctl works. Basically works! - * - * Revision 0.3 1998/12/15 13:05:18 wolff - * It works! Wow! Gotta start implementing IOCTL and stuff.... - * - * Revision 0.2 1998/12/01 08:33:53 wolff - * moved over to 2.1.130 - * - * Revision 0.1 1998/11/03 21:23:51 wolff - * Initial revision. Detects SX card. - * - * */ - -#define SX_VERSION 1.33 - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -/* The 3.0.0 version of sxboards/sxwindow.h uses BYTE and WORD.... */ -#define BYTE u8 -#define WORD u16 - -/* .... but the 3.0.4 version uses _u8 and _u16. */ -#define _u8 u8 -#define _u16 u16 - -#include "sxboards.h" -#include "sxwindow.h" - -#include -#include "sx.h" - -/* I don't think that this driver can handle more than 256 ports on - one machine. You'll have to increase the number of boards in sx.h - if you want more than 4 boards. */ - -#ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 -#define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 -#endif - -/* Configurable options: - (Don't be too sure that it'll work if you toggle them) */ - -/* Am I paranoid or not ? ;-) */ -#undef SX_PARANOIA_CHECK - -/* 20 -> 2000 per second. The card should rate-limit interrupts at 100 - Hz, but it is user configurable. I don't recommend going above 1000 - Hz. The interrupt ratelimit might trigger if the interrupt is - shared with a very active other device. */ -#define IRQ_RATE_LIMIT 20 - -/* Sharing interrupts is possible now. If the other device wants more - than 2000 interrupts per second, we'd gracefully decline further - interrupts. That's not what we want. On the other hand, if the - other device interrupts 2000 times a second, don't use the SX - interrupt. Use polling. */ -#undef IRQ_RATE_LIMIT - -#if 0 -/* Not implemented */ -/* - * The following defines are mostly for testing purposes. But if you need - * some nice reporting in your syslog, you can define them also. - */ -#define SX_REPORT_FIFO -#define SX_REPORT_OVERRUN -#endif - -/* Function prototypes */ -static void sx_disable_tx_interrupts(void *ptr); -static void sx_enable_tx_interrupts(void *ptr); -static void sx_disable_rx_interrupts(void *ptr); -static void sx_enable_rx_interrupts(void *ptr); -static int sx_carrier_raised(struct tty_port *port); -static void sx_shutdown_port(void *ptr); -static int sx_set_real_termios(void *ptr); -static void sx_close(void *ptr); -static int sx_chars_in_buffer(void *ptr); -static int sx_init_board(struct sx_board *board); -static int sx_init_portstructs(int nboards, int nports); -static long sx_fw_ioctl(struct file *filp, unsigned int cmd, - unsigned long arg); -static int sx_init_drivers(void); - -static struct tty_driver *sx_driver; - -static DEFINE_MUTEX(sx_boards_lock); -static struct sx_board boards[SX_NBOARDS]; -static struct sx_port *sx_ports; -static int sx_initialized; -static int sx_nports; -static int sx_debug; - -/* You can have the driver poll your card. - - Set sx_poll to 1 to poll every timer tick (10ms on Intel). - This is used when the card cannot use an interrupt for some reason. - - - set sx_slowpoll to 100 to do an extra poll once a second (on Intel). If - the driver misses an interrupt (report this if it DOES happen to you!) - everything will continue to work.... - */ -static int sx_poll = 1; -static int sx_slowpoll; - -/* The card limits the number of interrupts per second. - At 115k2 "100" should be sufficient. - If you're using higher baudrates, you can increase this... - */ - -static int sx_maxints = 100; - -#ifdef CONFIG_ISA - -/* These are the only open spaces in my computer. Yours may have more - or less.... -- REW - duh: Card at 0xa0000 is possible on HP Netserver?? -- pvdl -*/ -static int sx_probe_addrs[] = { - 0xc0000, 0xd0000, 0xe0000, - 0xc8000, 0xd8000, 0xe8000 -}; -static int si_probe_addrs[] = { - 0xc0000, 0xd0000, 0xe0000, - 0xc8000, 0xd8000, 0xe8000, 0xa0000 -}; -static int si1_probe_addrs[] = { - 0xd0000 -}; - -#define NR_SX_ADDRS ARRAY_SIZE(sx_probe_addrs) -#define NR_SI_ADDRS ARRAY_SIZE(si_probe_addrs) -#define NR_SI1_ADDRS ARRAY_SIZE(si1_probe_addrs) - -module_param_array(sx_probe_addrs, int, NULL, 0); -module_param_array(si_probe_addrs, int, NULL, 0); -#endif - -/* Set the mask to all-ones. This alas, only supports 32 interrupts. - Some architectures may need more. */ -static int sx_irqmask = -1; - -module_param(sx_poll, int, 0); -module_param(sx_slowpoll, int, 0); -module_param(sx_maxints, int, 0); -module_param(sx_debug, int, 0); -module_param(sx_irqmask, int, 0); - -MODULE_LICENSE("GPL"); - -static struct real_driver sx_real_driver = { - sx_disable_tx_interrupts, - sx_enable_tx_interrupts, - sx_disable_rx_interrupts, - sx_enable_rx_interrupts, - sx_shutdown_port, - sx_set_real_termios, - sx_chars_in_buffer, - sx_close, -}; - -/* - This driver can spew a whole lot of debugging output at you. If you - need maximum performance, you should disable the DEBUG define. To - aid in debugging in the field, I'm leaving the compile-time debug - features enabled, and disable them "runtime". That allows me to - instruct people with problems to enable debugging without requiring - them to recompile... -*/ -#define DEBUG - -#ifdef DEBUG -#define sx_dprintk(f, str...) if (sx_debug & f) printk (str) -#else -#define sx_dprintk(f, str...) /* nothing */ -#endif - -#define func_enter() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s\n",__func__) -#define func_exit() sx_dprintk(SX_DEBUG_FLOW, "sx: exit %s\n",__func__) - -#define func_enter2() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s (port %d)\n", \ - __func__, port->line) - -/* - * Firmware loader driver specific routines - * - */ - -static const struct file_operations sx_fw_fops = { - .owner = THIS_MODULE, - .unlocked_ioctl = sx_fw_ioctl, - .llseek = noop_llseek, -}; - -static struct miscdevice sx_fw_device = { - SXCTL_MISC_MINOR, "sxctl", &sx_fw_fops -}; - -#ifdef SX_PARANOIA_CHECK - -/* This doesn't work. Who's paranoid around here? Not me! */ - -static inline int sx_paranoia_check(struct sx_port const *port, - char *name, const char *routine) -{ - static const char *badmagic = KERN_ERR "sx: Warning: bad sx port magic " - "number for device %s in %s\n"; - static const char *badinfo = KERN_ERR "sx: Warning: null sx port for " - "device %s in %s\n"; - - if (!port) { - printk(badinfo, name, routine); - return 1; - } - if (port->magic != SX_MAGIC) { - printk(badmagic, name, routine); - return 1; - } - - return 0; -} -#else -#define sx_paranoia_check(a,b,c) 0 -#endif - -/* The timeouts. First try 30 times as fast as possible. Then give - the card some time to breathe between accesses. (Otherwise the - processor on the card might not be able to access its OWN bus... */ - -#define TIMEOUT_1 30 -#define TIMEOUT_2 1000000 - -#ifdef DEBUG -static void my_hd_io(void __iomem *p, int len) -{ - int i, j, ch; - unsigned char __iomem *addr = p; - - for (i = 0; i < len; i += 16) { - printk("%p ", addr + i); - for (j = 0; j < 16; j++) { - printk("%02x %s", readb(addr + j + i), - (j == 7) ? " " : ""); - } - for (j = 0; j < 16; j++) { - ch = readb(addr + j + i); - printk("%c", (ch < 0x20) ? '.' : - ((ch > 0x7f) ? '.' : ch)); - } - printk("\n"); - } -} -static void my_hd(void *p, int len) -{ - int i, j, ch; - unsigned char *addr = p; - - for (i = 0; i < len; i += 16) { - printk("%p ", addr + i); - for (j = 0; j < 16; j++) { - printk("%02x %s", addr[j + i], (j == 7) ? " " : ""); - } - for (j = 0; j < 16; j++) { - ch = addr[j + i]; - printk("%c", (ch < 0x20) ? '.' : - ((ch > 0x7f) ? '.' : ch)); - } - printk("\n"); - } -} -#endif - -/* This needs redoing for Alpha -- REW -- Done. */ - -static inline void write_sx_byte(struct sx_board *board, int offset, u8 byte) -{ - writeb(byte, board->base + offset); -} - -static inline u8 read_sx_byte(struct sx_board *board, int offset) -{ - return readb(board->base + offset); -} - -static inline void write_sx_word(struct sx_board *board, int offset, u16 word) -{ - writew(word, board->base + offset); -} - -static inline u16 read_sx_word(struct sx_board *board, int offset) -{ - return readw(board->base + offset); -} - -static int sx_busy_wait_eq(struct sx_board *board, - int offset, int mask, int correctval) -{ - int i; - - func_enter(); - - for (i = 0; i < TIMEOUT_1; i++) - if ((read_sx_byte(board, offset) & mask) == correctval) { - func_exit(); - return 1; - } - - for (i = 0; i < TIMEOUT_2; i++) { - if ((read_sx_byte(board, offset) & mask) == correctval) { - func_exit(); - return 1; - } - udelay(1); - } - - func_exit(); - return 0; -} - -static int sx_busy_wait_neq(struct sx_board *board, - int offset, int mask, int badval) -{ - int i; - - func_enter(); - - for (i = 0; i < TIMEOUT_1; i++) - if ((read_sx_byte(board, offset) & mask) != badval) { - func_exit(); - return 1; - } - - for (i = 0; i < TIMEOUT_2; i++) { - if ((read_sx_byte(board, offset) & mask) != badval) { - func_exit(); - return 1; - } - udelay(1); - } - - func_exit(); - return 0; -} - -/* 5.6.4 of 6210028 r2.3 */ -static int sx_reset(struct sx_board *board) -{ - func_enter(); - - if (IS_SX_BOARD(board)) { - - write_sx_byte(board, SX_CONFIG, 0); - write_sx_byte(board, SX_RESET, 1); /* Value doesn't matter */ - - if (!sx_busy_wait_eq(board, SX_RESET_STATUS, 1, 0)) { - printk(KERN_INFO "sx: Card doesn't respond to " - "reset...\n"); - return 0; - } - } else if (IS_EISA_BOARD(board)) { - outb(board->irq << 4, board->eisa_base + 0xc02); - } else if (IS_SI1_BOARD(board)) { - write_sx_byte(board, SI1_ISA_RESET, 0); /*value doesn't matter*/ - } else { - /* Gory details of the SI/ISA board */ - write_sx_byte(board, SI2_ISA_RESET, SI2_ISA_RESET_SET); - write_sx_byte(board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_CLEAR); - write_sx_byte(board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_CLEAR); - write_sx_byte(board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_CLEAR); - write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); - write_sx_byte(board, SI2_ISA_IRQSET, SI2_ISA_IRQSET_CLEAR); - } - - func_exit(); - return 1; -} - -/* This doesn't work on machines where "NULL" isn't 0 */ -/* If you have one of those, someone will need to write - the equivalent of this, which will amount to about 3 lines. I don't - want to complicate this right now. -- REW - (See, I do write comments every now and then :-) */ -#define OFFSETOF(strct, elem) ((long)&(((struct strct *)NULL)->elem)) - -#define CHAN_OFFSET(port,elem) (port->ch_base + OFFSETOF (_SXCHANNEL, elem)) -#define MODU_OFFSET(board,addr,elem) (addr + OFFSETOF (_SXMODULE, elem)) -#define BRD_OFFSET(board,elem) (OFFSETOF (_SXCARD, elem)) - -#define sx_write_channel_byte(port, elem, val) \ - write_sx_byte (port->board, CHAN_OFFSET (port, elem), val) - -#define sx_read_channel_byte(port, elem) \ - read_sx_byte (port->board, CHAN_OFFSET (port, elem)) - -#define sx_write_channel_word(port, elem, val) \ - write_sx_word (port->board, CHAN_OFFSET (port, elem), val) - -#define sx_read_channel_word(port, elem) \ - read_sx_word (port->board, CHAN_OFFSET (port, elem)) - -#define sx_write_module_byte(board, addr, elem, val) \ - write_sx_byte (board, MODU_OFFSET (board, addr, elem), val) - -#define sx_read_module_byte(board, addr, elem) \ - read_sx_byte (board, MODU_OFFSET (board, addr, elem)) - -#define sx_write_module_word(board, addr, elem, val) \ - write_sx_word (board, MODU_OFFSET (board, addr, elem), val) - -#define sx_read_module_word(board, addr, elem) \ - read_sx_word (board, MODU_OFFSET (board, addr, elem)) - -#define sx_write_board_byte(board, elem, val) \ - write_sx_byte (board, BRD_OFFSET (board, elem), val) - -#define sx_read_board_byte(board, elem) \ - read_sx_byte (board, BRD_OFFSET (board, elem)) - -#define sx_write_board_word(board, elem, val) \ - write_sx_word (board, BRD_OFFSET (board, elem), val) - -#define sx_read_board_word(board, elem) \ - read_sx_word (board, BRD_OFFSET (board, elem)) - -static int sx_start_board(struct sx_board *board) -{ - if (IS_SX_BOARD(board)) { - write_sx_byte(board, SX_CONFIG, SX_CONF_BUSEN); - } else if (IS_EISA_BOARD(board)) { - write_sx_byte(board, SI2_EISA_OFF, SI2_EISA_VAL); - outb((board->irq << 4) | 4, board->eisa_base + 0xc02); - } else if (IS_SI1_BOARD(board)) { - write_sx_byte(board, SI1_ISA_RESET_CLEAR, 0); - write_sx_byte(board, SI1_ISA_INTCL, 0); - } else { - /* Don't bug me about the clear_set. - I haven't the foggiest idea what it's about -- REW */ - write_sx_byte(board, SI2_ISA_RESET, SI2_ISA_RESET_CLEAR); - write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); - } - return 1; -} - -#define SX_IRQ_REG_VAL(board) \ - ((board->flags & SX_ISA_BOARD) ? (board->irq << 4) : 0) - -/* Note. The SX register is write-only. Therefore, we have to enable the - bus too. This is a no-op, if you don't mess with this driver... */ -static int sx_start_interrupts(struct sx_board *board) -{ - - /* Don't call this with board->irq == 0 */ - - if (IS_SX_BOARD(board)) { - write_sx_byte(board, SX_CONFIG, SX_IRQ_REG_VAL(board) | - SX_CONF_BUSEN | SX_CONF_HOSTIRQ); - } else if (IS_EISA_BOARD(board)) { - inb(board->eisa_base + 0xc03); - } else if (IS_SI1_BOARD(board)) { - write_sx_byte(board, SI1_ISA_INTCL, 0); - write_sx_byte(board, SI1_ISA_INTCL_CLEAR, 0); - } else { - switch (board->irq) { - case 11: - write_sx_byte(board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_SET); - break; - case 12: - write_sx_byte(board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_SET); - break; - case 15: - write_sx_byte(board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_SET); - break; - default: - printk(KERN_INFO "sx: SI/XIO card doesn't support " - "interrupt %d.\n", board->irq); - return 0; - } - write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); - } - - return 1; -} - -static int sx_send_command(struct sx_port *port, - int command, int mask, int newstat) -{ - func_enter2(); - write_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat), command); - func_exit(); - return sx_busy_wait_eq(port->board, CHAN_OFFSET(port, hi_hstat), mask, - newstat); -} - -static char *mod_type_s(int module_type) -{ - switch (module_type) { - case TA4: - return "TA4"; - case TA8: - return "TA8"; - case TA4_ASIC: - return "TA4_ASIC"; - case TA8_ASIC: - return "TA8_ASIC"; - case MTA_CD1400: - return "MTA_CD1400"; - case SXDC: - return "SXDC"; - default: - return "Unknown/invalid"; - } -} - -static char *pan_type_s(int pan_type) -{ - switch (pan_type) { - case MOD_RS232DB25: - return "MOD_RS232DB25"; - case MOD_RS232RJ45: - return "MOD_RS232RJ45"; - case MOD_RS422DB25: - return "MOD_RS422DB25"; - case MOD_PARALLEL: - return "MOD_PARALLEL"; - case MOD_2_RS232DB25: - return "MOD_2_RS232DB25"; - case MOD_2_RS232RJ45: - return "MOD_2_RS232RJ45"; - case MOD_2_RS422DB25: - return "MOD_2_RS422DB25"; - case MOD_RS232DB25MALE: - return "MOD_RS232DB25MALE"; - case MOD_2_PARALLEL: - return "MOD_2_PARALLEL"; - case MOD_BLANK: - return "empty"; - default: - return "invalid"; - } -} - -static int mod_compat_type(int module_type) -{ - return module_type >> 4; -} - -static void sx_reconfigure_port(struct sx_port *port) -{ - if (sx_read_channel_byte(port, hi_hstat) == HS_IDLE_OPEN) { - if (sx_send_command(port, HS_CONFIG, -1, HS_IDLE_OPEN) != 1) { - printk(KERN_WARNING "sx: Sent reconfigure command, but " - "card didn't react.\n"); - } - } else { - sx_dprintk(SX_DEBUG_TERMIOS, "sx: Not sending reconfigure: " - "port isn't open (%02x).\n", - sx_read_channel_byte(port, hi_hstat)); - } -} - -static void sx_setsignals(struct sx_port *port, int dtr, int rts) -{ - int t; - func_enter2(); - - t = sx_read_channel_byte(port, hi_op); - if (dtr >= 0) - t = dtr ? (t | OP_DTR) : (t & ~OP_DTR); - if (rts >= 0) - t = rts ? (t | OP_RTS) : (t & ~OP_RTS); - sx_write_channel_byte(port, hi_op, t); - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "setsignals: %d/%d\n", dtr, rts); - - func_exit(); -} - -static int sx_getsignals(struct sx_port *port) -{ - int i_stat, o_stat; - - o_stat = sx_read_channel_byte(port, hi_op); - i_stat = sx_read_channel_byte(port, hi_ip); - - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) " - "%02x/%02x\n", - (o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0, - port->c_dcd, tty_port_carrier_raised(&port->gs.port), - sx_read_channel_byte(port, hi_ip), - sx_read_channel_byte(port, hi_state)); - - return (((o_stat & OP_DTR) ? TIOCM_DTR : 0) | - ((o_stat & OP_RTS) ? TIOCM_RTS : 0) | - ((i_stat & IP_CTS) ? TIOCM_CTS : 0) | - ((i_stat & IP_DCD) ? TIOCM_CAR : 0) | - ((i_stat & IP_DSR) ? TIOCM_DSR : 0) | - ((i_stat & IP_RI) ? TIOCM_RNG : 0)); -} - -static void sx_set_baud(struct sx_port *port) -{ - int t; - - if (port->board->ta_type == MOD_SXDC) { - switch (port->gs.baud) { - /* Save some typing work... */ -#define e(x) case x: t = BAUD_ ## x; break - e(50); - e(75); - e(110); - e(150); - e(200); - e(300); - e(600); - e(1200); - e(1800); - e(2000); - e(2400); - e(4800); - e(7200); - e(9600); - e(14400); - e(19200); - e(28800); - e(38400); - e(56000); - e(57600); - e(64000); - e(76800); - e(115200); - e(128000); - e(150000); - e(230400); - e(256000); - e(460800); - e(921600); - case 134: - t = BAUD_134_5; - break; - case 0: - t = -1; - break; - default: - /* Can I return "invalid"? */ - t = BAUD_9600; - printk(KERN_INFO "sx: unsupported baud rate: %d.\n", - port->gs.baud); - break; - } -#undef e - if (t > 0) { -/* The baud rate is not set to 0, so we're enabeling DTR... -- REW */ - sx_setsignals(port, 1, -1); - /* XXX This is not TA & MTA compatible */ - sx_write_channel_byte(port, hi_csr, 0xff); - - sx_write_channel_byte(port, hi_txbaud, t); - sx_write_channel_byte(port, hi_rxbaud, t); - } else { - sx_setsignals(port, 0, -1); - } - } else { - switch (port->gs.baud) { -#define e(x) case x: t = CSR_ ## x; break - e(75); - e(150); - e(300); - e(600); - e(1200); - e(2400); - e(4800); - e(1800); - e(9600); - e(19200); - e(57600); - e(38400); -/* TA supports 110, but not 115200, MTA supports 115200, but not 110 */ - case 110: - if (port->board->ta_type == MOD_TA) { - t = CSR_110; - break; - } else { - t = CSR_9600; - printk(KERN_INFO "sx: Unsupported baud rate: " - "%d.\n", port->gs.baud); - break; - } - case 115200: - if (port->board->ta_type == MOD_TA) { - t = CSR_9600; - printk(KERN_INFO "sx: Unsupported baud rate: " - "%d.\n", port->gs.baud); - break; - } else { - t = CSR_110; - break; - } - case 0: - t = -1; - break; - default: - t = CSR_9600; - printk(KERN_INFO "sx: Unsupported baud rate: %d.\n", - port->gs.baud); - break; - } -#undef e - if (t >= 0) { - sx_setsignals(port, 1, -1); - sx_write_channel_byte(port, hi_csr, t * 0x11); - } else { - sx_setsignals(port, 0, -1); - } - } -} - -/* Simon Allen's version of this routine was 225 lines long. 85 is a lot - better. -- REW */ - -static int sx_set_real_termios(void *ptr) -{ - struct sx_port *port = ptr; - - func_enter2(); - - if (!port->gs.port.tty) - return 0; - - /* What is this doing here? -- REW - Ha! figured it out. It is to allow you to get DTR active again - if you've dropped it with stty 0. Moved to set_baud, where it - belongs (next to the drop dtr if baud == 0) -- REW */ - /* sx_setsignals (port, 1, -1); */ - - sx_set_baud(port); - -#define CFLAG port->gs.port.tty->termios->c_cflag - sx_write_channel_byte(port, hi_mr1, - (C_PARENB(port->gs.port.tty) ? MR1_WITH : MR1_NONE) | - (C_PARODD(port->gs.port.tty) ? MR1_ODD : MR1_EVEN) | - (C_CRTSCTS(port->gs.port.tty) ? MR1_RTS_RXFLOW : 0) | - (((CFLAG & CSIZE) == CS8) ? MR1_8_BITS : 0) | - (((CFLAG & CSIZE) == CS7) ? MR1_7_BITS : 0) | - (((CFLAG & CSIZE) == CS6) ? MR1_6_BITS : 0) | - (((CFLAG & CSIZE) == CS5) ? MR1_5_BITS : 0)); - - sx_write_channel_byte(port, hi_mr2, - (C_CRTSCTS(port->gs.port.tty) ? MR2_CTS_TXFLOW : 0) | - (C_CSTOPB(port->gs.port.tty) ? MR2_2_STOP : - MR2_1_STOP)); - - switch (CFLAG & CSIZE) { - case CS8: - sx_write_channel_byte(port, hi_mask, 0xff); - break; - case CS7: - sx_write_channel_byte(port, hi_mask, 0x7f); - break; - case CS6: - sx_write_channel_byte(port, hi_mask, 0x3f); - break; - case CS5: - sx_write_channel_byte(port, hi_mask, 0x1f); - break; - default: - printk(KERN_INFO "sx: Invalid wordsize: %u\n", - (unsigned int)CFLAG & CSIZE); - break; - } - - sx_write_channel_byte(port, hi_prtcl, - (I_IXON(port->gs.port.tty) ? SP_TXEN : 0) | - (I_IXOFF(port->gs.port.tty) ? SP_RXEN : 0) | - (I_IXANY(port->gs.port.tty) ? SP_TANY : 0) | SP_DCEN); - - sx_write_channel_byte(port, hi_break, - (I_IGNBRK(port->gs.port.tty) ? BR_IGN : 0 | - I_BRKINT(port->gs.port.tty) ? BR_INT : 0)); - - sx_write_channel_byte(port, hi_txon, START_CHAR(port->gs.port.tty)); - sx_write_channel_byte(port, hi_rxon, START_CHAR(port->gs.port.tty)); - sx_write_channel_byte(port, hi_txoff, STOP_CHAR(port->gs.port.tty)); - sx_write_channel_byte(port, hi_rxoff, STOP_CHAR(port->gs.port.tty)); - - sx_reconfigure_port(port); - - /* Tell line discipline whether we will do input cooking */ - if (I_OTHER(port->gs.port.tty)) { - clear_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags); - } else { - set_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags); - } - sx_dprintk(SX_DEBUG_TERMIOS, "iflags: %x(%d) ", - (unsigned int)port->gs.port.tty->termios->c_iflag, - I_OTHER(port->gs.port.tty)); - -/* Tell line discipline whether we will do output cooking. - * If OPOST is set and no other output flags are set then we can do output - * processing. Even if only *one* other flag in the O_OTHER group is set - * we do cooking in software. - */ - if (O_OPOST(port->gs.port.tty) && !O_OTHER(port->gs.port.tty)) { - set_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags); - } else { - clear_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags); - } - sx_dprintk(SX_DEBUG_TERMIOS, "oflags: %x(%d)\n", - (unsigned int)port->gs.port.tty->termios->c_oflag, - O_OTHER(port->gs.port.tty)); - /* port->c_dcd = sx_get_CD (port); */ - func_exit(); - return 0; -} - -/* ********************************************************************** * - * the interrupt related routines * - * ********************************************************************** */ - -/* Note: - Other drivers use the macro "MIN" to calculate how much to copy. - This has the disadvantage that it will evaluate parts twice. That's - expensive when it's IO (and the compiler cannot optimize those away!). - Moreover, I'm not sure that you're race-free. - - I assign a value, and then only allow the value to decrease. This - is always safe. This makes the code a few lines longer, and you - know I'm dead against that, but I think it is required in this - case. */ - -static void sx_transmit_chars(struct sx_port *port) -{ - int c; - int tx_ip; - int txroom; - - func_enter2(); - sx_dprintk(SX_DEBUG_TRANSMIT, "Port %p: transmit %d chars\n", - port, port->gs.xmit_cnt); - - if (test_and_set_bit(SX_PORT_TRANSMIT_LOCK, &port->locks)) { - return; - } - - while (1) { - c = port->gs.xmit_cnt; - - sx_dprintk(SX_DEBUG_TRANSMIT, "Copying %d ", c); - tx_ip = sx_read_channel_byte(port, hi_txipos); - - /* Took me 5 minutes to deduce this formula. - Luckily it is literally in the manual in section 6.5.4.3.5 */ - txroom = (sx_read_channel_byte(port, hi_txopos) - tx_ip - 1) & - 0xff; - - /* Don't copy more bytes than there is room for in the buffer */ - if (c > txroom) - c = txroom; - sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%d) ", c, txroom); - - /* Don't copy past the end of the hardware transmit buffer */ - if (c > 0x100 - tx_ip) - c = 0x100 - tx_ip; - - sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%d) ", c, 0x100 - tx_ip); - - /* Don't copy pas the end of the source buffer */ - if (c > SERIAL_XMIT_SIZE - port->gs.xmit_tail) - c = SERIAL_XMIT_SIZE - port->gs.xmit_tail; - - sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%ld) \n", - c, SERIAL_XMIT_SIZE - port->gs.xmit_tail); - - /* If for one reason or another, we can't copy more data, we're - done! */ - if (c == 0) - break; - - memcpy_toio(port->board->base + CHAN_OFFSET(port, hi_txbuf) + - tx_ip, port->gs.xmit_buf + port->gs.xmit_tail, c); - - /* Update the pointer in the card */ - sx_write_channel_byte(port, hi_txipos, (tx_ip + c) & 0xff); - - /* Update the kernel buffer end */ - port->gs.xmit_tail = (port->gs.xmit_tail + c) & - (SERIAL_XMIT_SIZE - 1); - - /* This one last. (this is essential) - It would allow others to start putting more data into the - buffer! */ - port->gs.xmit_cnt -= c; - } - - if (port->gs.xmit_cnt == 0) { - sx_disable_tx_interrupts(port); - } - - if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) { - tty_wakeup(port->gs.port.tty); - sx_dprintk(SX_DEBUG_TRANSMIT, "Waking up.... ldisc (%d)....\n", - port->gs.wakeup_chars); - } - - clear_bit(SX_PORT_TRANSMIT_LOCK, &port->locks); - func_exit(); -} - -/* Note the symmetry between receiving chars and transmitting them! - Note: The kernel should have implemented both a receive buffer and - a transmit buffer. */ - -/* Inlined: Called only once. Remove the inline when you add another call */ -static inline void sx_receive_chars(struct sx_port *port) -{ - int c; - int rx_op; - struct tty_struct *tty; - int copied = 0; - unsigned char *rp; - - func_enter2(); - tty = port->gs.port.tty; - while (1) { - rx_op = sx_read_channel_byte(port, hi_rxopos); - c = (sx_read_channel_byte(port, hi_rxipos) - rx_op) & 0xff; - - sx_dprintk(SX_DEBUG_RECEIVE, "rxop=%d, c = %d.\n", rx_op, c); - - /* Don't copy past the end of the hardware receive buffer */ - if (rx_op + c > 0x100) - c = 0x100 - rx_op; - - sx_dprintk(SX_DEBUG_RECEIVE, "c = %d.\n", c); - - /* Don't copy more bytes than there is room for in the buffer */ - - c = tty_prepare_flip_string(tty, &rp, c); - - sx_dprintk(SX_DEBUG_RECEIVE, "c = %d.\n", c); - - /* If for one reason or another, we can't copy more data, we're done! */ - if (c == 0) - break; - - sx_dprintk(SX_DEBUG_RECEIVE, "Copying over %d chars. First is " - "%d at %lx\n", c, read_sx_byte(port->board, - CHAN_OFFSET(port, hi_rxbuf) + rx_op), - CHAN_OFFSET(port, hi_rxbuf)); - memcpy_fromio(rp, port->board->base + - CHAN_OFFSET(port, hi_rxbuf) + rx_op, c); - - /* This one last. ( Not essential.) - It allows the card to start putting more data into the - buffer! - Update the pointer in the card */ - sx_write_channel_byte(port, hi_rxopos, (rx_op + c) & 0xff); - - copied += c; - } - if (copied) { - struct timeval tv; - - do_gettimeofday(&tv); - sx_dprintk(SX_DEBUG_RECEIVE, "pushing flipq port %d (%3d " - "chars): %d.%06d (%d/%d)\n", port->line, - copied, (int)(tv.tv_sec % 60), (int)tv.tv_usec, - tty->raw, tty->real_raw); - - /* Tell the rest of the system the news. Great news. New - characters! */ - tty_flip_buffer_push(tty); - /* tty_schedule_flip (tty); */ - } - - func_exit(); -} - -/* Inlined: it is called only once. Remove the inline if you add another - call */ -static inline void sx_check_modem_signals(struct sx_port *port) -{ - int hi_state; - int c_dcd; - - hi_state = sx_read_channel_byte(port, hi_state); - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n", - port->c_dcd, tty_port_carrier_raised(&port->gs.port)); - - if (hi_state & ST_BREAK) { - hi_state &= ~ST_BREAK; - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a break.\n"); - sx_write_channel_byte(port, hi_state, hi_state); - gs_got_break(&port->gs); - } - if (hi_state & ST_DCD) { - hi_state &= ~ST_DCD; - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n"); - sx_write_channel_byte(port, hi_state, hi_state); - c_dcd = tty_port_carrier_raised(&port->gs.port); - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd); - if (c_dcd != port->c_dcd) { - port->c_dcd = c_dcd; - if (tty_port_carrier_raised(&port->gs.port)) { - /* DCD went UP */ - if ((sx_read_channel_byte(port, hi_hstat) != - HS_IDLE_CLOSED) && - !(port->gs.port.tty->termios-> - c_cflag & CLOCAL)) { - /* Are we blocking in open? */ - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " - "active, unblocking open\n"); - wake_up_interruptible(&port->gs.port. - open_wait); - } else { - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " - "raised. Ignoring.\n"); - } - } else { - /* DCD went down! */ - if (!(port->gs.port.tty->termios->c_cflag & CLOCAL)){ - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " - "dropped. hanging up....\n"); - tty_hangup(port->gs.port.tty); - } else { - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " - "dropped. ignoring.\n"); - } - } - } else { - sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Hmmm. card told us " - "DCD changed, but it didn't.\n"); - } - } -} - -/* This is what an interrupt routine should look like. - * Small, elegant, clear. - */ - -static irqreturn_t sx_interrupt(int irq, void *ptr) -{ - struct sx_board *board = ptr; - struct sx_port *port; - int i; - - func_enter(); - sx_dprintk(SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n", irq, - board->irq); - - /* AAargh! The order in which to do these things is essential and - not trivial. - - - Rate limit goes before "recursive". Otherwise a series of - recursive calls will hang the machine in the interrupt routine. - - - hardware twiddling goes before "recursive". Otherwise when we - poll the card, and a recursive interrupt happens, we won't - ack the card, so it might keep on interrupting us. (especially - level sensitive interrupt systems like PCI). - - - Rate limit goes before hardware twiddling. Otherwise we won't - catch a card that has gone bonkers. - - - The "initialized" test goes after the hardware twiddling. Otherwise - the card will stick us in the interrupt routine again. - - - The initialized test goes before recursive. - */ - -#ifdef IRQ_RATE_LIMIT - /* Aaargh! I'm ashamed. This costs more lines-of-code than the - actual interrupt routine!. (Well, used to when I wrote that - comment) */ - { - static int lastjif; - static int nintr = 0; - - if (lastjif == jiffies) { - if (++nintr > IRQ_RATE_LIMIT) { - free_irq(board->irq, board); - printk(KERN_ERR "sx: Too many interrupts. " - "Turning off interrupt %d.\n", - board->irq); - } - } else { - lastjif = jiffies; - nintr = 0; - } - } -#endif - - if (board->irq == irq) { - /* Tell the card we've noticed the interrupt. */ - - sx_write_board_word(board, cc_int_pending, 0); - if (IS_SX_BOARD(board)) { - write_sx_byte(board, SX_RESET_IRQ, 1); - } else if (IS_EISA_BOARD(board)) { - inb(board->eisa_base + 0xc03); - write_sx_word(board, 8, 0); - } else { - write_sx_byte(board, SI2_ISA_INTCLEAR, - SI2_ISA_INTCLEAR_CLEAR); - write_sx_byte(board, SI2_ISA_INTCLEAR, - SI2_ISA_INTCLEAR_SET); - } - } - - if (!sx_initialized) - return IRQ_HANDLED; - if (!(board->flags & SX_BOARD_INITIALIZED)) - return IRQ_HANDLED; - - if (test_and_set_bit(SX_BOARD_INTR_LOCK, &board->locks)) { - printk(KERN_ERR "Recursive interrupt! (%d)\n", board->irq); - return IRQ_HANDLED; - } - - for (i = 0; i < board->nports; i++) { - port = &board->ports[i]; - if (port->gs.port.flags & GS_ACTIVE) { - if (sx_read_channel_byte(port, hi_state)) { - sx_dprintk(SX_DEBUG_INTERRUPTS, "Port %d: " - "modem signal change?... \n",i); - sx_check_modem_signals(port); - } - if (port->gs.xmit_cnt) { - sx_transmit_chars(port); - } - if (!(port->gs.port.flags & SX_RX_THROTTLE)) { - sx_receive_chars(port); - } - } - } - - clear_bit(SX_BOARD_INTR_LOCK, &board->locks); - - sx_dprintk(SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n", irq, - board->irq); - func_exit(); - return IRQ_HANDLED; -} - -static void sx_pollfunc(unsigned long data) -{ - struct sx_board *board = (struct sx_board *)data; - - func_enter(); - - sx_interrupt(0, board); - - mod_timer(&board->timer, jiffies + sx_poll); - func_exit(); -} - -/* ********************************************************************** * - * Here are the routines that actually * - * interface with the generic_serial driver * - * ********************************************************************** */ - -/* Ehhm. I don't know how to fiddle with interrupts on the SX card. --REW */ -/* Hmm. Ok I figured it out. You don't. */ - -static void sx_disable_tx_interrupts(void *ptr) -{ - struct sx_port *port = ptr; - func_enter2(); - - port->gs.port.flags &= ~GS_TX_INTEN; - - func_exit(); -} - -static void sx_enable_tx_interrupts(void *ptr) -{ - struct sx_port *port = ptr; - int data_in_buffer; - func_enter2(); - - /* First transmit the characters that we're supposed to */ - sx_transmit_chars(port); - - /* The sx card will never interrupt us if we don't fill the buffer - past 25%. So we keep considering interrupts off if that's the case. */ - data_in_buffer = (sx_read_channel_byte(port, hi_txipos) - - sx_read_channel_byte(port, hi_txopos)) & 0xff; - - /* XXX Must be "HIGH_WATER" for SI card according to doc. */ - if (data_in_buffer < LOW_WATER) - port->gs.port.flags &= ~GS_TX_INTEN; - - func_exit(); -} - -static void sx_disable_rx_interrupts(void *ptr) -{ - /* struct sx_port *port = ptr; */ - func_enter(); - - func_exit(); -} - -static void sx_enable_rx_interrupts(void *ptr) -{ - /* struct sx_port *port = ptr; */ - func_enter(); - - func_exit(); -} - -/* Jeez. Isn't this simple? */ -static int sx_carrier_raised(struct tty_port *port) -{ - struct sx_port *sp = container_of(port, struct sx_port, gs.port); - return ((sx_read_channel_byte(sp, hi_ip) & IP_DCD) != 0); -} - -/* Jeez. Isn't this simple? */ -static int sx_chars_in_buffer(void *ptr) -{ - struct sx_port *port = ptr; - func_enter2(); - - func_exit(); - return ((sx_read_channel_byte(port, hi_txipos) - - sx_read_channel_byte(port, hi_txopos)) & 0xff); -} - -static void sx_shutdown_port(void *ptr) -{ - struct sx_port *port = ptr; - - func_enter(); - - port->gs.port.flags &= ~GS_ACTIVE; - if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) { - sx_setsignals(port, 0, 0); - sx_reconfigure_port(port); - } - - func_exit(); -} - -/* ********************************************************************** * - * Here are the routines that actually * - * interface with the rest of the system * - * ********************************************************************** */ - -static int sx_open(struct tty_struct *tty, struct file *filp) -{ - struct sx_port *port; - int retval, line; - unsigned long flags; - - func_enter(); - - if (!sx_initialized) { - return -EIO; - } - - line = tty->index; - sx_dprintk(SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, " - "np=%d)\n", task_pid_nr(current), line, tty, - current->signal->tty, sx_nports); - - if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports)) - return -ENODEV; - - port = &sx_ports[line]; - port->c_dcd = 0; /* Make sure that the first interrupt doesn't detect a - 1 -> 0 transition. */ - - sx_dprintk(SX_DEBUG_OPEN, "port = %p c_dcd = %d\n", port, port->c_dcd); - - spin_lock_irqsave(&port->gs.driver_lock, flags); - - tty->driver_data = port; - port->gs.port.tty = tty; - port->gs.port.count++; - spin_unlock_irqrestore(&port->gs.driver_lock, flags); - - sx_dprintk(SX_DEBUG_OPEN, "starting port\n"); - - /* - * Start up serial port - */ - retval = gs_init_port(&port->gs); - sx_dprintk(SX_DEBUG_OPEN, "done gs_init\n"); - if (retval) { - port->gs.port.count--; - return retval; - } - - port->gs.port.flags |= GS_ACTIVE; - if (port->gs.port.count <= 1) - sx_setsignals(port, 1, 1); - -#if 0 - if (sx_debug & SX_DEBUG_OPEN) - my_hd(port, sizeof(*port)); -#else - if (sx_debug & SX_DEBUG_OPEN) - my_hd_io(port->board->base + port->ch_base, sizeof(*port)); -#endif - - if (port->gs.port.count <= 1) { - if (sx_send_command(port, HS_LOPEN, -1, HS_IDLE_OPEN) != 1) { - printk(KERN_ERR "sx: Card didn't respond to LOPEN " - "command.\n"); - spin_lock_irqsave(&port->gs.driver_lock, flags); - port->gs.port.count--; - spin_unlock_irqrestore(&port->gs.driver_lock, flags); - return -EIO; - } - } - - retval = gs_block_til_ready(port, filp); - sx_dprintk(SX_DEBUG_OPEN, "Block til ready returned %d. Count=%d\n", - retval, port->gs.port.count); - - if (retval) { -/* - * Don't lower gs.port.count here because sx_close() will be called later - */ - - return retval; - } - /* tty->low_latency = 1; */ - - port->c_dcd = sx_carrier_raised(&port->gs.port); - sx_dprintk(SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd); - - func_exit(); - return 0; - -} - -static void sx_close(void *ptr) -{ - struct sx_port *port = ptr; - /* Give the port 5 seconds to close down. */ - int to = 5 * HZ; - - func_enter(); - - sx_setsignals(port, 0, 0); - sx_reconfigure_port(port); - sx_send_command(port, HS_CLOSE, 0, 0); - - while (to-- && (sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED)) - if (msleep_interruptible(10)) - break; - if (sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED) { - if (sx_send_command(port, HS_FORCE_CLOSED, -1, HS_IDLE_CLOSED) - != 1) { - printk(KERN_ERR "sx: sent the force_close command, but " - "card didn't react\n"); - } else - sx_dprintk(SX_DEBUG_CLOSE, "sent the force_close " - "command.\n"); - } - - sx_dprintk(SX_DEBUG_CLOSE, "waited %d jiffies for close. count=%d\n", - 5 * HZ - to - 1, port->gs.port.count); - - if (port->gs.port.count) { - sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n", - port->gs.port.count); - /*printk("%s SETTING port count to zero: %p count: %d\n", - __func__, port, port->gs.port.count); - port->gs.port.count = 0;*/ - } - - func_exit(); -} - -/* This is relatively thorough. But then again it is only 20 lines. */ -#define MARCHUP for (i = min; i < max; i++) -#define MARCHDOWN for (i = max - 1; i >= min; i--) -#define W0 write_sx_byte(board, i, 0x55) -#define W1 write_sx_byte(board, i, 0xaa) -#define R0 if (read_sx_byte(board, i) != 0x55) return 1 -#define R1 if (read_sx_byte(board, i) != 0xaa) return 1 - -/* This memtest takes a human-noticable time. You normally only do it - once a boot, so I guess that it is worth it. */ -static int do_memtest(struct sx_board *board, int min, int max) -{ - int i; - - /* This is a marchb. Theoretically, marchb catches much more than - simpler tests. In practise, the longer test just catches more - intermittent errors. -- REW - (For the theory behind memory testing see: - Testing Semiconductor Memories by A.J. van de Goor.) */ - MARCHUP { - W0; - } - MARCHUP { - R0; - W1; - R1; - W0; - R0; - W1; - } - MARCHUP { - R1; - W0; - W1; - } - MARCHDOWN { - R1; - W0; - W1; - W0; - } - MARCHDOWN { - R0; - W1; - W0; - } - - return 0; -} - -#undef MARCHUP -#undef MARCHDOWN -#undef W0 -#undef W1 -#undef R0 -#undef R1 - -#define MARCHUP for (i = min; i < max; i += 2) -#define MARCHDOWN for (i = max - 1; i >= min; i -= 2) -#define W0 write_sx_word(board, i, 0x55aa) -#define W1 write_sx_word(board, i, 0xaa55) -#define R0 if (read_sx_word(board, i) != 0x55aa) return 1 -#define R1 if (read_sx_word(board, i) != 0xaa55) return 1 - -#if 0 -/* This memtest takes a human-noticable time. You normally only do it - once a boot, so I guess that it is worth it. */ -static int do_memtest_w(struct sx_board *board, int min, int max) -{ - int i; - - MARCHUP { - W0; - } - MARCHUP { - R0; - W1; - R1; - W0; - R0; - W1; - } - MARCHUP { - R1; - W0; - W1; - } - MARCHDOWN { - R1; - W0; - W1; - W0; - } - MARCHDOWN { - R0; - W1; - W0; - } - - return 0; -} -#endif - -static long sx_fw_ioctl(struct file *filp, unsigned int cmd, - unsigned long arg) -{ - long rc = 0; - int __user *descr = (int __user *)arg; - int i; - static struct sx_board *board = NULL; - int nbytes, offset; - unsigned long data; - char *tmp; - - func_enter(); - - if (!capable(CAP_SYS_RAWIO)) - return -EPERM; - - tty_lock(); - - sx_dprintk(SX_DEBUG_FIRMWARE, "IOCTL %x: %lx\n", cmd, arg); - - if (!board) - board = &boards[0]; - if (board->flags & SX_BOARD_PRESENT) { - sx_dprintk(SX_DEBUG_FIRMWARE, "Board present! (%x)\n", - board->flags); - } else { - sx_dprintk(SX_DEBUG_FIRMWARE, "Board not present! (%x) all:", - board->flags); - for (i = 0; i < SX_NBOARDS; i++) - sx_dprintk(SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags); - sx_dprintk(SX_DEBUG_FIRMWARE, "\n"); - rc = -EIO; - goto out; - } - - switch (cmd) { - case SXIO_SET_BOARD: - sx_dprintk(SX_DEBUG_FIRMWARE, "set board to %ld\n", arg); - rc = -EIO; - if (arg >= SX_NBOARDS) - break; - sx_dprintk(SX_DEBUG_FIRMWARE, "not out of range\n"); - if (!(boards[arg].flags & SX_BOARD_PRESENT)) - break; - sx_dprintk(SX_DEBUG_FIRMWARE, ".. and present!\n"); - board = &boards[arg]; - rc = 0; - /* FIXME: And this does ... nothing?? */ - break; - case SXIO_GET_TYPE: - rc = -ENOENT; /* If we manage to miss one, return error. */ - if (IS_SX_BOARD(board)) - rc = SX_TYPE_SX; - if (IS_CF_BOARD(board)) - rc = SX_TYPE_CF; - if (IS_SI_BOARD(board)) - rc = SX_TYPE_SI; - if (IS_SI1_BOARD(board)) - rc = SX_TYPE_SI; - if (IS_EISA_BOARD(board)) - rc = SX_TYPE_SI; - sx_dprintk(SX_DEBUG_FIRMWARE, "returning type= %ld\n", rc); - break; - case SXIO_DO_RAMTEST: - if (sx_initialized) { /* Already initialized: better not ramtest the board. */ - rc = -EPERM; - break; - } - if (IS_SX_BOARD(board)) { - rc = do_memtest(board, 0, 0x7000); - if (!rc) - rc = do_memtest(board, 0, 0x7000); - /*if (!rc) rc = do_memtest_w (board, 0, 0x7000); */ - } else { - rc = do_memtest(board, 0, 0x7ff8); - /* if (!rc) rc = do_memtest_w (board, 0, 0x7ff8); */ - } - sx_dprintk(SX_DEBUG_FIRMWARE, - "returning memtest result= %ld\n", rc); - break; - case SXIO_DOWNLOAD: - if (sx_initialized) {/* Already initialized */ - rc = -EEXIST; - break; - } - if (!sx_reset(board)) { - rc = -EIO; - break; - } - sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); - - tmp = kmalloc(SX_CHUNK_SIZE, GFP_USER); - if (!tmp) { - rc = -ENOMEM; - break; - } - /* FIXME: check returns */ - get_user(nbytes, descr++); - get_user(offset, descr++); - get_user(data, descr++); - while (nbytes && data) { - for (i = 0; i < nbytes; i += SX_CHUNK_SIZE) { - if (copy_from_user(tmp, (char __user *)data + i, - (i + SX_CHUNK_SIZE > nbytes) ? - nbytes - i : SX_CHUNK_SIZE)) { - kfree(tmp); - rc = -EFAULT; - goto out; - } - memcpy_toio(board->base2 + offset + i, tmp, - (i + SX_CHUNK_SIZE > nbytes) ? - nbytes - i : SX_CHUNK_SIZE); - } - - get_user(nbytes, descr++); - get_user(offset, descr++); - get_user(data, descr++); - } - kfree(tmp); - sx_nports += sx_init_board(board); - rc = sx_nports; - break; - case SXIO_INIT: - if (sx_initialized) { /* Already initialized */ - rc = -EEXIST; - break; - } - /* This is not allowed until all boards are initialized... */ - for (i = 0; i < SX_NBOARDS; i++) { - if ((boards[i].flags & SX_BOARD_PRESENT) && - !(boards[i].flags & SX_BOARD_INITIALIZED)) { - rc = -EIO; - break; - } - } - for (i = 0; i < SX_NBOARDS; i++) - if (!(boards[i].flags & SX_BOARD_PRESENT)) - break; - - sx_dprintk(SX_DEBUG_FIRMWARE, "initing portstructs, %d boards, " - "%d channels, first board: %d ports\n", - i, sx_nports, boards[0].nports); - rc = sx_init_portstructs(i, sx_nports); - sx_init_drivers(); - if (rc >= 0) - sx_initialized++; - break; - case SXIO_SETDEBUG: - sx_debug = arg; - break; - case SXIO_GETDEBUG: - rc = sx_debug; - break; - case SXIO_GETGSDEBUG: - case SXIO_SETGSDEBUG: - rc = -EINVAL; - break; - case SXIO_GETNPORTS: - rc = sx_nports; - break; - default: - rc = -ENOTTY; - break; - } -out: - tty_unlock(); - func_exit(); - return rc; -} - -static int sx_break(struct tty_struct *tty, int flag) -{ - struct sx_port *port = tty->driver_data; - int rv; - - func_enter(); - tty_lock(); - - if (flag) - rv = sx_send_command(port, HS_START, -1, HS_IDLE_BREAK); - else - rv = sx_send_command(port, HS_STOP, -1, HS_IDLE_OPEN); - if (rv != 1) - printk(KERN_ERR "sx: couldn't send break (%x).\n", - read_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat))); - tty_unlock(); - func_exit(); - return 0; -} - -static int sx_tiocmget(struct tty_struct *tty) -{ - struct sx_port *port = tty->driver_data; - return sx_getsignals(port); -} - -static int sx_tiocmset(struct tty_struct *tty, - unsigned int set, unsigned int clear) -{ - struct sx_port *port = tty->driver_data; - int rts = -1, dtr = -1; - - if (set & TIOCM_RTS) - rts = 1; - if (set & TIOCM_DTR) - dtr = 1; - if (clear & TIOCM_RTS) - rts = 0; - if (clear & TIOCM_DTR) - dtr = 0; - - sx_setsignals(port, dtr, rts); - sx_reconfigure_port(port); - return 0; -} - -static int sx_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - int rc; - struct sx_port *port = tty->driver_data; - void __user *argp = (void __user *)arg; - - /* func_enter2(); */ - - rc = 0; - tty_lock(); - switch (cmd) { - case TIOCGSERIAL: - rc = gs_getserial(&port->gs, argp); - break; - case TIOCSSERIAL: - rc = gs_setserial(&port->gs, argp); - break; - default: - rc = -ENOIOCTLCMD; - break; - } - tty_unlock(); - - /* func_exit(); */ - return rc; -} - -/* The throttle/unthrottle scheme for the Specialix card is different - * from other drivers and deserves some explanation. - * The Specialix hardware takes care of XON/XOFF - * and CTS/RTS flow control itself. This means that all we have to - * do when signalled by the upper tty layer to throttle/unthrottle is - * to make a note of it here. When we come to read characters from the - * rx buffers on the card (sx_receive_chars()) we look to see if the - * upper layer can accept more (as noted here in sx_rx_throt[]). - * If it can't we simply don't remove chars from the cards buffer. - * When the tty layer can accept chars, we again note that here and when - * sx_receive_chars() is called it will remove them from the cards buffer. - * The card will notice that a ports buffer has drained below some low - * water mark and will unflow control the line itself, using whatever - * flow control scheme is in use for that port. -- Simon Allen - */ - -static void sx_throttle(struct tty_struct *tty) -{ - struct sx_port *port = tty->driver_data; - - func_enter2(); - /* If the port is using any type of input flow - * control then throttle the port. - */ - if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) { - port->gs.port.flags |= SX_RX_THROTTLE; - } - func_exit(); -} - -static void sx_unthrottle(struct tty_struct *tty) -{ - struct sx_port *port = tty->driver_data; - - func_enter2(); - /* Always unthrottle even if flow control is not enabled on - * this port in case we disabled flow control while the port - * was throttled - */ - port->gs.port.flags &= ~SX_RX_THROTTLE; - func_exit(); - return; -} - -/* ********************************************************************** * - * Here are the initialization routines. * - * ********************************************************************** */ - -static int sx_init_board(struct sx_board *board) -{ - int addr; - int chans; - int type; - - func_enter(); - - /* This is preceded by downloading the download code. */ - - board->flags |= SX_BOARD_INITIALIZED; - - if (read_sx_byte(board, 0)) - /* CF boards may need this. */ - write_sx_byte(board, 0, 0); - - /* This resets the processor again, to make sure it didn't do any - foolish things while we were downloading the image */ - if (!sx_reset(board)) - return 0; - - sx_start_board(board); - udelay(10); - if (!sx_busy_wait_neq(board, 0, 0xff, 0)) { - printk(KERN_ERR "sx: Ooops. Board won't initialize.\n"); - return 0; - } - - /* Ok. So now the processor on the card is running. It gathered - some info for us... */ - sx_dprintk(SX_DEBUG_INIT, "The sxcard structure:\n"); - if (sx_debug & SX_DEBUG_INIT) - my_hd_io(board->base, 0x10); - sx_dprintk(SX_DEBUG_INIT, "the first sx_module structure:\n"); - if (sx_debug & SX_DEBUG_INIT) - my_hd_io(board->base + 0x80, 0x30); - - sx_dprintk(SX_DEBUG_INIT, "init_status: %x, %dk memory, firmware " - "V%x.%02x,\n", - read_sx_byte(board, 0), read_sx_byte(board, 1), - read_sx_byte(board, 5), read_sx_byte(board, 4)); - - if (read_sx_byte(board, 0) == 0xff) { - printk(KERN_INFO "sx: No modules found. Sorry.\n"); - board->nports = 0; - return 0; - } - - chans = 0; - - if (IS_SX_BOARD(board)) { - sx_write_board_word(board, cc_int_count, sx_maxints); - } else { - if (sx_maxints) - sx_write_board_word(board, cc_int_count, - SI_PROCESSOR_CLOCK / 8 / sx_maxints); - } - - /* grab the first module type... */ - /* board->ta_type = mod_compat_type (read_sx_byte (board, 0x80 + 0x08)); */ - board->ta_type = mod_compat_type(sx_read_module_byte(board, 0x80, - mc_chip)); - - /* XXX byteorder */ - for (addr = 0x80; addr != 0; addr = read_sx_word(board, addr) & 0x7fff){ - type = sx_read_module_byte(board, addr, mc_chip); - sx_dprintk(SX_DEBUG_INIT, "Module at %x: %d channels\n", - addr, read_sx_byte(board, addr + 2)); - - chans += sx_read_module_byte(board, addr, mc_type); - - sx_dprintk(SX_DEBUG_INIT, "module is an %s, which has %s/%s " - "panels\n", - mod_type_s(type), - pan_type_s(sx_read_module_byte(board, addr, - mc_mods) & 0xf), - pan_type_s(sx_read_module_byte(board, addr, - mc_mods) >> 4)); - - sx_dprintk(SX_DEBUG_INIT, "CD1400 versions: %x/%x, ASIC " - "version: %x\n", - sx_read_module_byte(board, addr, mc_rev1), - sx_read_module_byte(board, addr, mc_rev2), - sx_read_module_byte(board, addr, mc_mtaasic_rev)); - - /* The following combinations are illegal: It should theoretically - work, but timing problems make the bus HANG. */ - - if (mod_compat_type(type) != board->ta_type) { - printk(KERN_ERR "sx: This is an invalid " - "configuration.\nDon't mix TA/MTA/SXDC on the " - "same hostadapter.\n"); - chans = 0; - break; - } - if ((IS_EISA_BOARD(board) || - IS_SI_BOARD(board)) && - (mod_compat_type(type) == 4)) { - printk(KERN_ERR "sx: This is an invalid " - "configuration.\nDon't use SXDCs on an SI/XIO " - "adapter.\n"); - chans = 0; - break; - } -#if 0 /* Problem fixed: firmware 3.05 */ - if (IS_SX_BOARD(board) && (type == TA8)) { - /* There are some issues with the firmware and the DCD/RTS - lines. It might work if you tie them together or something. - It might also work if you get a newer sx_firmware. Therefore - this is just a warning. */ - printk(KERN_WARNING - "sx: The SX host doesn't work too well " - "with the TA8 adapters.\nSpecialix is working on it.\n"); - } -#endif - } - - if (chans) { - if (board->irq > 0) { - /* fixed irq, probably PCI */ - if (sx_irqmask & (1 << board->irq)) { /* may we use this irq? */ - if (request_irq(board->irq, sx_interrupt, - IRQF_SHARED | IRQF_DISABLED, - "sx", board)) { - printk(KERN_ERR "sx: Cannot allocate " - "irq %d.\n", board->irq); - board->irq = 0; - } - } else - board->irq = 0; - } else if (board->irq < 0 && sx_irqmask) { - /* auto-allocate irq */ - int irqnr; - int irqmask = sx_irqmask & (IS_SX_BOARD(board) ? - SX_ISA_IRQ_MASK : SI2_ISA_IRQ_MASK); - for (irqnr = 15; irqnr > 0; irqnr--) - if (irqmask & (1 << irqnr)) - if (!request_irq(irqnr, sx_interrupt, - IRQF_SHARED | IRQF_DISABLED, - "sx", board)) - break; - if (!irqnr) - printk(KERN_ERR "sx: Cannot allocate IRQ.\n"); - board->irq = irqnr; - } else - board->irq = 0; - - if (board->irq) { - /* Found a valid interrupt, start up interrupts! */ - sx_dprintk(SX_DEBUG_INIT, "Using irq %d.\n", - board->irq); - sx_start_interrupts(board); - board->poll = sx_slowpoll; - board->flags |= SX_IRQ_ALLOCATED; - } else { - /* no irq: setup board for polled operation */ - board->poll = sx_poll; - sx_dprintk(SX_DEBUG_INIT, "Using poll-interval %d.\n", - board->poll); - } - - /* The timer should be initialized anyway: That way we can - safely del_timer it when the module is unloaded. */ - setup_timer(&board->timer, sx_pollfunc, (unsigned long)board); - - if (board->poll) - mod_timer(&board->timer, jiffies + board->poll); - } else { - board->irq = 0; - } - - board->nports = chans; - sx_dprintk(SX_DEBUG_INIT, "returning %d ports.", board->nports); - - func_exit(); - return chans; -} - -static void __devinit printheader(void) -{ - static int header_printed; - - if (!header_printed) { - printk(KERN_INFO "Specialix SX driver " - "(C) 1998/1999 R.E.Wolff@BitWizard.nl\n"); - printk(KERN_INFO "sx: version " __stringify(SX_VERSION) "\n"); - header_printed = 1; - } -} - -static int __devinit probe_sx(struct sx_board *board) -{ - struct vpd_prom vpdp; - char *p; - int i; - - func_enter(); - - if (!IS_CF_BOARD(board)) { - sx_dprintk(SX_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", - board->base + SX_VPD_ROM); - - if (sx_debug & SX_DEBUG_PROBE) - my_hd_io(board->base + SX_VPD_ROM, 0x40); - - p = (char *)&vpdp; - for (i = 0; i < sizeof(struct vpd_prom); i++) - *p++ = read_sx_byte(board, SX_VPD_ROM + i * 2); - - if (sx_debug & SX_DEBUG_PROBE) - my_hd(&vpdp, 0x20); - - sx_dprintk(SX_DEBUG_PROBE, "checking identifier...\n"); - - if (strncmp(vpdp.identifier, SX_VPD_IDENT_STRING, 16) != 0) { - sx_dprintk(SX_DEBUG_PROBE, "Got non-SX identifier: " - "'%s'\n", vpdp.identifier); - return 0; - } - } - - printheader(); - - if (!IS_CF_BOARD(board)) { - printk(KERN_DEBUG "sx: Found an SX board at %lx\n", - board->hw_base); - printk(KERN_DEBUG "sx: hw_rev: %d, assembly level: %d, " - "uniq ID:%08x, ", - vpdp.hwrev, vpdp.hwass, vpdp.uniqid); - printk("Manufactured: %d/%d\n", 1970 + vpdp.myear, vpdp.mweek); - - if ((((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != - SX_PCI_UNIQUEID1) && (((vpdp.uniqid >> 24) & - SX_UNIQUEID_MASK) != SX_ISA_UNIQUEID1)) { - /* This might be a bit harsh. This was the primary - reason the SX/ISA card didn't work at first... */ - printk(KERN_ERR "sx: Hmm. Not an SX/PCI or SX/ISA " - "card. Sorry: giving up.\n"); - return (0); - } - - if (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) == - SX_ISA_UNIQUEID1) { - if (((unsigned long)board->hw_base) & 0x8000) { - printk(KERN_WARNING "sx: Warning: There may be " - "hardware problems with the card at " - "%lx.\n", board->hw_base); - printk(KERN_WARNING "sx: Read sx.txt for more " - "info.\n"); - } - } - } - - board->nports = -1; - - /* This resets the processor, and keeps it off the bus. */ - if (!sx_reset(board)) - return 0; - sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); - - func_exit(); - return 1; -} - -#if defined(CONFIG_ISA) || defined(CONFIG_EISA) - -/* Specialix probes for this card at 32k increments from 640k to 16M. - I consider machines with less than 16M unlikely nowadays, so I'm - not probing above 1Mb. Also, 0xa0000, 0xb0000, are taken by the VGA - card. 0xe0000 and 0xf0000 are taken by the BIOS. That only leaves - 0xc0000, 0xc8000, 0xd0000 and 0xd8000 . */ - -static int __devinit probe_si(struct sx_board *board) -{ - int i; - - func_enter(); - sx_dprintk(SX_DEBUG_PROBE, "Going to verify SI signature hw %lx at " - "%p.\n", board->hw_base, board->base + SI2_ISA_ID_BASE); - - if (sx_debug & SX_DEBUG_PROBE) - my_hd_io(board->base + SI2_ISA_ID_BASE, 0x8); - - if (!IS_EISA_BOARD(board)) { - if (IS_SI1_BOARD(board)) { - for (i = 0; i < 8; i++) { - write_sx_byte(board, SI2_ISA_ID_BASE + 7 - i,i); - } - } - for (i = 0; i < 8; i++) { - if ((read_sx_byte(board, SI2_ISA_ID_BASE + 7 - i) & 7) - != i) { - func_exit(); - return 0; - } - } - } - - /* Now we're pretty much convinced that there is an SI board here, - but to prevent trouble, we'd better double check that we don't - have an SI1 board when we're probing for an SI2 board.... */ - - write_sx_byte(board, SI2_ISA_ID_BASE, 0x10); - if (IS_SI1_BOARD(board)) { - /* This should be an SI1 board, which has this - location writable... */ - if (read_sx_byte(board, SI2_ISA_ID_BASE) != 0x10) { - func_exit(); - return 0; - } - } else { - /* This should be an SI2 board, which has the bottom - 3 bits non-writable... */ - if (read_sx_byte(board, SI2_ISA_ID_BASE) == 0x10) { - func_exit(); - return 0; - } - } - - /* Now we're pretty much convinced that there is an SI board here, - but to prevent trouble, we'd better double check that we don't - have an SI1 board when we're probing for an SI2 board.... */ - - write_sx_byte(board, SI2_ISA_ID_BASE, 0x10); - if (IS_SI1_BOARD(board)) { - /* This should be an SI1 board, which has this - location writable... */ - if (read_sx_byte(board, SI2_ISA_ID_BASE) != 0x10) { - func_exit(); - return 0; - } - } else { - /* This should be an SI2 board, which has the bottom - 3 bits non-writable... */ - if (read_sx_byte(board, SI2_ISA_ID_BASE) == 0x10) { - func_exit(); - return 0; - } - } - - printheader(); - - printk(KERN_DEBUG "sx: Found an SI board at %lx\n", board->hw_base); - /* Compared to the SX boards, it is a complete guess as to what - this card is up to... */ - - board->nports = -1; - - /* This resets the processor, and keeps it off the bus. */ - if (!sx_reset(board)) - return 0; - sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); - - func_exit(); - return 1; -} -#endif - -static const struct tty_operations sx_ops = { - .break_ctl = sx_break, - .open = sx_open, - .close = gs_close, - .write = gs_write, - .put_char = gs_put_char, - .flush_chars = gs_flush_chars, - .write_room = gs_write_room, - .chars_in_buffer = gs_chars_in_buffer, - .flush_buffer = gs_flush_buffer, - .ioctl = sx_ioctl, - .throttle = sx_throttle, - .unthrottle = sx_unthrottle, - .set_termios = gs_set_termios, - .stop = gs_stop, - .start = gs_start, - .hangup = gs_hangup, - .tiocmget = sx_tiocmget, - .tiocmset = sx_tiocmset, -}; - -static const struct tty_port_operations sx_port_ops = { - .carrier_raised = sx_carrier_raised, -}; - -static int sx_init_drivers(void) -{ - int error; - - func_enter(); - - sx_driver = alloc_tty_driver(sx_nports); - if (!sx_driver) - return 1; - sx_driver->owner = THIS_MODULE; - sx_driver->driver_name = "specialix_sx"; - sx_driver->name = "ttyX"; - sx_driver->major = SX_NORMAL_MAJOR; - sx_driver->type = TTY_DRIVER_TYPE_SERIAL; - sx_driver->subtype = SERIAL_TYPE_NORMAL; - sx_driver->init_termios = tty_std_termios; - sx_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - sx_driver->init_termios.c_ispeed = 9600; - sx_driver->init_termios.c_ospeed = 9600; - sx_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(sx_driver, &sx_ops); - - if ((error = tty_register_driver(sx_driver))) { - put_tty_driver(sx_driver); - printk(KERN_ERR "sx: Couldn't register sx driver, error = %d\n", - error); - return 1; - } - func_exit(); - return 0; -} - -static int sx_init_portstructs(int nboards, int nports) -{ - struct sx_board *board; - struct sx_port *port; - int i, j; - int addr, chans; - int portno; - - func_enter(); - - /* Many drivers statically allocate the maximum number of ports - There is no reason not to allocate them dynamically. - Is there? -- REW */ - sx_ports = kcalloc(nports, sizeof(struct sx_port), GFP_KERNEL); - if (!sx_ports) - return -ENOMEM; - - port = sx_ports; - for (i = 0; i < nboards; i++) { - board = &boards[i]; - board->ports = port; - for (j = 0; j < boards[i].nports; j++) { - sx_dprintk(SX_DEBUG_INIT, "initing port %d\n", j); - tty_port_init(&port->gs.port); - port->gs.port.ops = &sx_port_ops; - port->gs.magic = SX_MAGIC; - port->gs.close_delay = HZ / 2; - port->gs.closing_wait = 30 * HZ; - port->board = board; - port->gs.rd = &sx_real_driver; -#ifdef NEW_WRITE_LOCKING - port->gs.port_write_mutex = MUTEX; -#endif - spin_lock_init(&port->gs.driver_lock); - /* - * Initializing wait queue - */ - port++; - } - } - - port = sx_ports; - portno = 0; - for (i = 0; i < nboards; i++) { - board = &boards[i]; - board->port_base = portno; - /* Possibly the configuration was rejected. */ - sx_dprintk(SX_DEBUG_PROBE, "Board has %d channels\n", - board->nports); - if (board->nports <= 0) - continue; - /* XXX byteorder ?? */ - for (addr = 0x80; addr != 0; - addr = read_sx_word(board, addr) & 0x7fff) { - chans = sx_read_module_byte(board, addr, mc_type); - sx_dprintk(SX_DEBUG_PROBE, "Module at %x: %d " - "channels\n", addr, chans); - sx_dprintk(SX_DEBUG_PROBE, "Port at"); - for (j = 0; j < chans; j++) { - /* The "sx-way" is the way it SHOULD be done. - That way in the future, the firmware may for - example pack the structures a bit more - efficient. Neil tells me it isn't going to - happen anytime soon though. */ - if (IS_SX_BOARD(board)) - port->ch_base = sx_read_module_word( - board, addr + j * 2, - mc_chan_pointer); - else - port->ch_base = addr + 0x100 + 0x300 *j; - - sx_dprintk(SX_DEBUG_PROBE, " %x", - port->ch_base); - port->line = portno++; - port++; - } - sx_dprintk(SX_DEBUG_PROBE, "\n"); - } - /* This has to be done earlier. */ - /* board->flags |= SX_BOARD_INITIALIZED; */ - } - - func_exit(); - return 0; -} - -static unsigned int sx_find_free_board(void) -{ - unsigned int i; - - for (i = 0; i < SX_NBOARDS; i++) - if (!(boards[i].flags & SX_BOARD_PRESENT)) - break; - - return i; -} - -static void __exit sx_release_drivers(void) -{ - func_enter(); - tty_unregister_driver(sx_driver); - put_tty_driver(sx_driver); - func_exit(); -} - -static void __devexit sx_remove_card(struct sx_board *board, - struct pci_dev *pdev) -{ - if (board->flags & SX_BOARD_INITIALIZED) { - /* The board should stop messing with us. (actually I mean the - interrupt) */ - sx_reset(board); - if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED)) - free_irq(board->irq, board); - - /* It is safe/allowed to del_timer a non-active timer */ - del_timer(&board->timer); - if (pdev) { -#ifdef CONFIG_PCI - iounmap(board->base2); - pci_release_region(pdev, IS_CF_BOARD(board) ? 3 : 2); -#endif - } else { - iounmap(board->base); - release_region(board->hw_base, board->hw_len); - } - - board->flags &= ~(SX_BOARD_INITIALIZED | SX_BOARD_PRESENT); - } -} - -#ifdef CONFIG_EISA - -static int __devinit sx_eisa_probe(struct device *dev) -{ - struct eisa_device *edev = to_eisa_device(dev); - struct sx_board *board; - unsigned long eisa_slot = edev->base_addr; - unsigned int i; - int retval = -EIO; - - mutex_lock(&sx_boards_lock); - i = sx_find_free_board(); - if (i == SX_NBOARDS) { - mutex_unlock(&sx_boards_lock); - goto err; - } - board = &boards[i]; - board->flags |= SX_BOARD_PRESENT; - mutex_unlock(&sx_boards_lock); - - dev_info(dev, "XIO : Signature found in EISA slot %lu, " - "Product %d Rev %d (REPORT THIS TO LKLM)\n", - eisa_slot >> 12, - inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 2), - inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 3)); - - board->eisa_base = eisa_slot; - board->flags &= ~SX_BOARD_TYPE; - board->flags |= SI_EISA_BOARD; - - board->hw_base = ((inb(eisa_slot + 0xc01) << 8) + - inb(eisa_slot + 0xc00)) << 16; - board->hw_len = SI2_EISA_WINDOW_LEN; - if (!request_region(board->hw_base, board->hw_len, "sx")) { - dev_err(dev, "can't request region\n"); - goto err_flag; - } - board->base2 = - board->base = ioremap_nocache(board->hw_base, SI2_EISA_WINDOW_LEN); - if (!board->base) { - dev_err(dev, "can't remap memory\n"); - goto err_reg; - } - - sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base); - sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base); - board->irq = inb(eisa_slot + 0xc02) >> 4; - sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq); - - if (!probe_si(board)) - goto err_unmap; - - dev_set_drvdata(dev, board); - - return 0; -err_unmap: - iounmap(board->base); -err_reg: - release_region(board->hw_base, board->hw_len); -err_flag: - board->flags &= ~SX_BOARD_PRESENT; -err: - return retval; -} - -static int __devexit sx_eisa_remove(struct device *dev) -{ - struct sx_board *board = dev_get_drvdata(dev); - - sx_remove_card(board, NULL); - - return 0; -} - -static struct eisa_device_id sx_eisa_tbl[] = { - { "SLX" }, - { "" } -}; - -MODULE_DEVICE_TABLE(eisa, sx_eisa_tbl); - -static struct eisa_driver sx_eisadriver = { - .id_table = sx_eisa_tbl, - .driver = { - .name = "sx", - .probe = sx_eisa_probe, - .remove = __devexit_p(sx_eisa_remove), - } -}; - -#endif - -#ifdef CONFIG_PCI - /******************************************************** - * Setting bit 17 in the CNTRL register of the PLX 9050 * - * chip forces a retry on writes while a read is pending.* - * This is to prevent the card locking up on Intel Xeon * - * multiprocessor systems with the NX chipset. -- NV * - ********************************************************/ - -/* Newer cards are produced with this bit set from the configuration - EEprom. As the bit is read/write for the CPU, we can fix it here, - if we detect that it isn't set correctly. -- REW */ - -static void __devinit fix_sx_pci(struct pci_dev *pdev, struct sx_board *board) -{ - unsigned int hwbase; - void __iomem *rebase; - unsigned int t; - -#define CNTRL_REG_OFFSET 0x50 -#define CNTRL_REG_GOODVALUE 0x18260000 - - pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); - hwbase &= PCI_BASE_ADDRESS_MEM_MASK; - rebase = ioremap_nocache(hwbase, 0x80); - t = readl(rebase + CNTRL_REG_OFFSET); - if (t != CNTRL_REG_GOODVALUE) { - printk(KERN_DEBUG "sx: performing cntrl reg fix: %08x -> " - "%08x\n", t, CNTRL_REG_GOODVALUE); - writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); - } - iounmap(rebase); -} -#endif - -static int __devinit sx_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ -#ifdef CONFIG_PCI - struct sx_board *board; - unsigned int i, reg; - int retval = -EIO; - - mutex_lock(&sx_boards_lock); - i = sx_find_free_board(); - if (i == SX_NBOARDS) { - mutex_unlock(&sx_boards_lock); - goto err; - } - board = &boards[i]; - board->flags |= SX_BOARD_PRESENT; - mutex_unlock(&sx_boards_lock); - - retval = pci_enable_device(pdev); - if (retval) - goto err_flag; - - board->flags &= ~SX_BOARD_TYPE; - board->flags |= (pdev->subsystem_vendor == 0x200) ? SX_PCI_BOARD : - SX_CFPCI_BOARD; - - /* CF boards use base address 3.... */ - reg = IS_CF_BOARD(board) ? 3 : 2; - retval = pci_request_region(pdev, reg, "sx"); - if (retval) { - dev_err(&pdev->dev, "can't request region\n"); - goto err_flag; - } - board->hw_base = pci_resource_start(pdev, reg); - board->base2 = - board->base = ioremap_nocache(board->hw_base, WINDOW_LEN(board)); - if (!board->base) { - dev_err(&pdev->dev, "ioremap failed\n"); - goto err_reg; - } - - /* Most of the stuff on the CF board is offset by 0x18000 .... */ - if (IS_CF_BOARD(board)) - board->base += 0x18000; - - board->irq = pdev->irq; - - dev_info(&pdev->dev, "Got a specialix card: %p(%d) %x.\n", board->base, - board->irq, board->flags); - - if (!probe_sx(board)) { - retval = -EIO; - goto err_unmap; - } - - fix_sx_pci(pdev, board); - - pci_set_drvdata(pdev, board); - - return 0; -err_unmap: - iounmap(board->base2); -err_reg: - pci_release_region(pdev, reg); -err_flag: - board->flags &= ~SX_BOARD_PRESENT; -err: - return retval; -#else - return -ENODEV; -#endif -} - -static void __devexit sx_pci_remove(struct pci_dev *pdev) -{ - struct sx_board *board = pci_get_drvdata(pdev); - - sx_remove_card(board, pdev); -} - -/* Specialix has a whole bunch of cards with 0x2000 as the device ID. They say - its because the standard requires it. So check for SUBVENDOR_ID. */ -static struct pci_device_id sx_pci_tbl[] = { - { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, - .subvendor = PCI_ANY_ID, .subdevice = 0x0200 }, - { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, - .subvendor = PCI_ANY_ID, .subdevice = 0x0300 }, - { 0 } -}; - -MODULE_DEVICE_TABLE(pci, sx_pci_tbl); - -static struct pci_driver sx_pcidriver = { - .name = "sx", - .id_table = sx_pci_tbl, - .probe = sx_pci_probe, - .remove = __devexit_p(sx_pci_remove) -}; - -static int __init sx_init(void) -{ -#ifdef CONFIG_EISA - int retval1; -#endif -#ifdef CONFIG_ISA - struct sx_board *board; - unsigned int i; -#endif - unsigned int found = 0; - int retval; - - func_enter(); - sx_dprintk(SX_DEBUG_INIT, "Initing sx module... (sx_debug=%d)\n", - sx_debug); - if (abs((long)(&sx_debug) - sx_debug) < 0x10000) { - printk(KERN_WARNING "sx: sx_debug is an address, instead of a " - "value. Assuming -1.\n(%p)\n", &sx_debug); - sx_debug = -1; - } - - if (misc_register(&sx_fw_device) < 0) { - printk(KERN_ERR "SX: Unable to register firmware loader " - "driver.\n"); - return -EIO; - } -#ifdef CONFIG_ISA - for (i = 0; i < NR_SX_ADDRS; i++) { - board = &boards[found]; - board->hw_base = sx_probe_addrs[i]; - board->hw_len = SX_WINDOW_LEN; - if (!request_region(board->hw_base, board->hw_len, "sx")) - continue; - board->base2 = - board->base = ioremap_nocache(board->hw_base, board->hw_len); - if (!board->base) - goto err_sx_reg; - board->flags &= ~SX_BOARD_TYPE; - board->flags |= SX_ISA_BOARD; - board->irq = sx_irqmask ? -1 : 0; - - if (probe_sx(board)) { - board->flags |= SX_BOARD_PRESENT; - found++; - } else { - iounmap(board->base); -err_sx_reg: - release_region(board->hw_base, board->hw_len); - } - } - - for (i = 0; i < NR_SI_ADDRS; i++) { - board = &boards[found]; - board->hw_base = si_probe_addrs[i]; - board->hw_len = SI2_ISA_WINDOW_LEN; - if (!request_region(board->hw_base, board->hw_len, "sx")) - continue; - board->base2 = - board->base = ioremap_nocache(board->hw_base, board->hw_len); - if (!board->base) - goto err_si_reg; - board->flags &= ~SX_BOARD_TYPE; - board->flags |= SI_ISA_BOARD; - board->irq = sx_irqmask ? -1 : 0; - - if (probe_si(board)) { - board->flags |= SX_BOARD_PRESENT; - found++; - } else { - iounmap(board->base); -err_si_reg: - release_region(board->hw_base, board->hw_len); - } - } - for (i = 0; i < NR_SI1_ADDRS; i++) { - board = &boards[found]; - board->hw_base = si1_probe_addrs[i]; - board->hw_len = SI1_ISA_WINDOW_LEN; - if (!request_region(board->hw_base, board->hw_len, "sx")) - continue; - board->base2 = - board->base = ioremap_nocache(board->hw_base, board->hw_len); - if (!board->base) - goto err_si1_reg; - board->flags &= ~SX_BOARD_TYPE; - board->flags |= SI1_ISA_BOARD; - board->irq = sx_irqmask ? -1 : 0; - - if (probe_si(board)) { - board->flags |= SX_BOARD_PRESENT; - found++; - } else { - iounmap(board->base); -err_si1_reg: - release_region(board->hw_base, board->hw_len); - } - } -#endif -#ifdef CONFIG_EISA - retval1 = eisa_driver_register(&sx_eisadriver); -#endif - retval = pci_register_driver(&sx_pcidriver); - - if (found) { - printk(KERN_INFO "sx: total of %d boards detected.\n", found); - retval = 0; - } else if (retval) { -#ifdef CONFIG_EISA - retval = retval1; - if (retval1) -#endif - misc_deregister(&sx_fw_device); - } - - func_exit(); - return retval; -} - -static void __exit sx_exit(void) -{ - int i; - - func_enter(); -#ifdef CONFIG_EISA - eisa_driver_unregister(&sx_eisadriver); -#endif - pci_unregister_driver(&sx_pcidriver); - - for (i = 0; i < SX_NBOARDS; i++) - sx_remove_card(&boards[i], NULL); - - if (misc_deregister(&sx_fw_device) < 0) { - printk(KERN_INFO "sx: couldn't deregister firmware loader " - "device\n"); - } - sx_dprintk(SX_DEBUG_CLEANUP, "Cleaning up drivers (%d)\n", - sx_initialized); - if (sx_initialized) - sx_release_drivers(); - - kfree(sx_ports); - func_exit(); -} - -module_init(sx_init); -module_exit(sx_exit); diff --git a/drivers/char/sx.h b/drivers/char/sx.h deleted file mode 100644 index 87c2defdead7..000000000000 --- a/drivers/char/sx.h +++ /dev/null @@ -1,201 +0,0 @@ - -/* - * sx.h - * - * Copyright (C) 1998/1999 R.E.Wolff@BitWizard.nl - * - * SX serial driver. - * -- Supports SI, XIO and SX host cards. - * -- Supports TAs, MTAs and SXDCs. - * - * Version 1.3 -- March, 1999. - * - */ - -#define SX_NBOARDS 4 -#define SX_PORTSPERBOARD 32 -#define SX_NPORTS (SX_NBOARDS * SX_PORTSPERBOARD) - -#ifdef __KERNEL__ - -#define SX_MAGIC 0x12345678 - -struct sx_port { - struct gs_port gs; - struct wait_queue *shutdown_wait; - int ch_base; - int c_dcd; - struct sx_board *board; - int line; - unsigned long locks; -}; - -struct sx_board { - int magic; - void __iomem *base; - void __iomem *base2; - unsigned long hw_base; - resource_size_t hw_len; - int eisa_base; - int port_base; /* Number of the first port */ - struct sx_port *ports; - int nports; - int flags; - int irq; - int poll; - int ta_type; - struct timer_list timer; - unsigned long locks; -}; - -struct vpd_prom { - unsigned short id; - char hwrev; - char hwass; - int uniqid; - char myear; - char mweek; - char hw_feature[5]; - char oem_id; - char identifier[16]; -}; - -#ifndef MOD_RS232DB25MALE -#define MOD_RS232DB25MALE 0x0a -#endif - -#define SI_ISA_BOARD 0x00000001 -#define SX_ISA_BOARD 0x00000002 -#define SX_PCI_BOARD 0x00000004 -#define SX_CFPCI_BOARD 0x00000008 -#define SX_CFISA_BOARD 0x00000010 -#define SI_EISA_BOARD 0x00000020 -#define SI1_ISA_BOARD 0x00000040 - -#define SX_BOARD_PRESENT 0x00001000 -#define SX_BOARD_INITIALIZED 0x00002000 -#define SX_IRQ_ALLOCATED 0x00004000 - -#define SX_BOARD_TYPE 0x000000ff - -#define IS_SX_BOARD(board) (board->flags & (SX_PCI_BOARD | SX_CFPCI_BOARD | \ - SX_ISA_BOARD | SX_CFISA_BOARD)) - -#define IS_SI_BOARD(board) (board->flags & SI_ISA_BOARD) -#define IS_SI1_BOARD(board) (board->flags & SI1_ISA_BOARD) - -#define IS_EISA_BOARD(board) (board->flags & SI_EISA_BOARD) - -#define IS_CF_BOARD(board) (board->flags & (SX_CFISA_BOARD | SX_CFPCI_BOARD)) - -/* The SI processor clock is required to calculate the cc_int_count register - value for the SI cards. */ -#define SI_PROCESSOR_CLOCK 25000000 - - -/* port flags */ -/* Make sure these don't clash with gs flags or async flags */ -#define SX_RX_THROTTLE 0x0000001 - - - -#define SX_PORT_TRANSMIT_LOCK 0 -#define SX_BOARD_INTR_LOCK 0 - - - -/* Debug flags. Add these together to get more debug info. */ - -#define SX_DEBUG_OPEN 0x00000001 -#define SX_DEBUG_SETTING 0x00000002 -#define SX_DEBUG_FLOW 0x00000004 -#define SX_DEBUG_MODEMSIGNALS 0x00000008 -#define SX_DEBUG_TERMIOS 0x00000010 -#define SX_DEBUG_TRANSMIT 0x00000020 -#define SX_DEBUG_RECEIVE 0x00000040 -#define SX_DEBUG_INTERRUPTS 0x00000080 -#define SX_DEBUG_PROBE 0x00000100 -#define SX_DEBUG_INIT 0x00000200 -#define SX_DEBUG_CLEANUP 0x00000400 -#define SX_DEBUG_CLOSE 0x00000800 -#define SX_DEBUG_FIRMWARE 0x00001000 -#define SX_DEBUG_MEMTEST 0x00002000 - -#define SX_DEBUG_ALL 0xffffffff - - -#define O_OTHER(tty) \ - ((O_OLCUC(tty)) ||\ - (O_ONLCR(tty)) ||\ - (O_OCRNL(tty)) ||\ - (O_ONOCR(tty)) ||\ - (O_ONLRET(tty)) ||\ - (O_OFILL(tty)) ||\ - (O_OFDEL(tty)) ||\ - (O_NLDLY(tty)) ||\ - (O_CRDLY(tty)) ||\ - (O_TABDLY(tty)) ||\ - (O_BSDLY(tty)) ||\ - (O_VTDLY(tty)) ||\ - (O_FFDLY(tty))) - -/* Same for input. */ -#define I_OTHER(tty) \ - ((I_INLCR(tty)) ||\ - (I_IGNCR(tty)) ||\ - (I_ICRNL(tty)) ||\ - (I_IUCLC(tty)) ||\ - (L_ISIG(tty))) - -#define MOD_TA ( TA>>4) -#define MOD_MTA (MTA_CD1400>>4) -#define MOD_SXDC ( SXDC>>4) - - -/* We copy the download code over to the card in chunks of ... bytes */ -#define SX_CHUNK_SIZE 128 - -#endif /* __KERNEL__ */ - - - -/* Specialix document 6210046-11 page 3 */ -#define SPX(X) (('S'<<24) | ('P' << 16) | (X)) - -/* Specialix-Linux specific IOCTLS. */ -#define SPXL(X) (SPX(('L' << 8) | (X))) - - -#define SXIO_SET_BOARD SPXL(0x01) -#define SXIO_GET_TYPE SPXL(0x02) -#define SXIO_DOWNLOAD SPXL(0x03) -#define SXIO_INIT SPXL(0x04) -#define SXIO_SETDEBUG SPXL(0x05) -#define SXIO_GETDEBUG SPXL(0x06) -#define SXIO_DO_RAMTEST SPXL(0x07) -#define SXIO_SETGSDEBUG SPXL(0x08) -#define SXIO_GETGSDEBUG SPXL(0x09) -#define SXIO_GETNPORTS SPXL(0x0a) - - -#ifndef SXCTL_MISC_MINOR -/* Allow others to gather this into "major.h" or something like that */ -#define SXCTL_MISC_MINOR 167 -#endif - -#ifndef SX_NORMAL_MAJOR -/* This allows overriding on the compiler commandline, or in a "major.h" - include or something like that */ -#define SX_NORMAL_MAJOR 32 -#define SX_CALLOUT_MAJOR 33 -#endif - - -#define SX_TYPE_SX 0x01 -#define SX_TYPE_SI 0x02 -#define SX_TYPE_CF 0x03 - - -#define WINDOW_LEN(board) (IS_CF_BOARD(board)?0x20000:SX_WINDOW_LEN) -/* Need a #define for ^^^^^^^ !!! */ - diff --git a/drivers/char/sxboards.h b/drivers/char/sxboards.h deleted file mode 100644 index 427927dc7dbf..000000000000 --- a/drivers/char/sxboards.h +++ /dev/null @@ -1,206 +0,0 @@ -/************************************************************************/ -/* */ -/* Title : SX/SI/XIO Board Hardware Definitions */ -/* */ -/* Author : N.P.Vassallo */ -/* */ -/* Creation : 16th March 1998 */ -/* */ -/* Version : 3.0.0 */ -/* */ -/* Copyright : (c) Specialix International Ltd. 1998 */ -/* */ -/* Description : Prototypes, structures and definitions */ -/* describing the SX/SI/XIO board hardware */ -/* */ -/************************************************************************/ - -/* History... - -3.0.0 16/03/98 NPV Creation. - -*/ - -#ifndef _sxboards_h /* If SXBOARDS.H not already defined */ -#define _sxboards_h 1 - -/***************************************************************************** -******************************* ****************************** -******************************* Board Types ****************************** -******************************* ****************************** -*****************************************************************************/ - -/* BUS types... */ -#define BUS_ISA 0 -#define BUS_MCA 1 -#define BUS_EISA 2 -#define BUS_PCI 3 - -/* Board phases... */ -#define SI1_Z280 1 -#define SI2_Z280 2 -#define SI3_T225 3 - -/* Board types... */ -#define CARD_TYPE(bus,phase) (bus<<4|phase) -#define CARD_BUS(type) ((type>>4)&0xF) -#define CARD_PHASE(type) (type&0xF) - -#define TYPE_SI1_ISA CARD_TYPE(BUS_ISA,SI1_Z280) -#define TYPE_SI2_ISA CARD_TYPE(BUS_ISA,SI2_Z280) -#define TYPE_SI2_EISA CARD_TYPE(BUS_EISA,SI2_Z280) -#define TYPE_SI2_PCI CARD_TYPE(BUS_PCI,SI2_Z280) - -#define TYPE_SX_ISA CARD_TYPE(BUS_ISA,SI3_T225) -#define TYPE_SX_PCI CARD_TYPE(BUS_PCI,SI3_T225) -/***************************************************************************** -****************************** ****************************** -****************************** Phase 1 Z280 ****************************** -****************************** ****************************** -*****************************************************************************/ - -/* ISA board details... */ -#define SI1_ISA_WINDOW_LEN 0x10000 /* 64 Kbyte shared memory window */ -//#define SI1_ISA_MEMORY_LEN 0x8000 /* Usable memory - unused define*/ -//#define SI1_ISA_ADDR_LOW 0x0A0000 /* Lowest address = 640 Kbyte */ -//#define SI1_ISA_ADDR_HIGH 0xFF8000 /* Highest address = 16Mbyte - 32Kbyte */ -//#define SI2_ISA_ADDR_STEP SI2_ISA_WINDOW_LEN/* ISA board address step */ -//#define SI2_ISA_IRQ_MASK 0x9800 /* IRQs 15,12,11 */ - -/* ISA board, register definitions... */ -//#define SI2_ISA_ID_BASE 0x7FF8 /* READ: Board ID string */ -#define SI1_ISA_RESET 0x8000 /* WRITE: Host Reset */ -#define SI1_ISA_RESET_CLEAR 0xc000 /* WRITE: Host Reset clear*/ -#define SI1_ISA_WAIT 0x9000 /* WRITE: Host wait */ -#define SI1_ISA_WAIT_CLEAR 0xd000 /* WRITE: Host wait clear */ -#define SI1_ISA_INTCL 0xa000 /* WRITE: Host Reset */ -#define SI1_ISA_INTCL_CLEAR 0xe000 /* WRITE: Host Reset */ - - -/***************************************************************************** -****************************** ****************************** -****************************** Phase 2 Z280 ****************************** -****************************** ****************************** -*****************************************************************************/ - -/* ISA board details... */ -#define SI2_ISA_WINDOW_LEN 0x8000 /* 32 Kbyte shared memory window */ -#define SI2_ISA_MEMORY_LEN 0x7FF8 /* Usable memory */ -#define SI2_ISA_ADDR_LOW 0x0A0000 /* Lowest address = 640 Kbyte */ -#define SI2_ISA_ADDR_HIGH 0xFF8000 /* Highest address = 16Mbyte - 32Kbyte */ -#define SI2_ISA_ADDR_STEP SI2_ISA_WINDOW_LEN/* ISA board address step */ -#define SI2_ISA_IRQ_MASK 0x9800 /* IRQs 15,12,11 */ - -/* ISA board, register definitions... */ -#define SI2_ISA_ID_BASE 0x7FF8 /* READ: Board ID string */ -#define SI2_ISA_RESET SI2_ISA_ID_BASE /* WRITE: Host Reset */ -#define SI2_ISA_IRQ11 (SI2_ISA_ID_BASE+1) /* WRITE: Set IRQ11 */ -#define SI2_ISA_IRQ12 (SI2_ISA_ID_BASE+2) /* WRITE: Set IRQ12 */ -#define SI2_ISA_IRQ15 (SI2_ISA_ID_BASE+3) /* WRITE: Set IRQ15 */ -#define SI2_ISA_IRQSET (SI2_ISA_ID_BASE+4) /* WRITE: Set Host Interrupt */ -#define SI2_ISA_INTCLEAR (SI2_ISA_ID_BASE+5) /* WRITE: Enable Host Interrupt */ - -#define SI2_ISA_IRQ11_SET 0x10 -#define SI2_ISA_IRQ11_CLEAR 0x00 -#define SI2_ISA_IRQ12_SET 0x10 -#define SI2_ISA_IRQ12_CLEAR 0x00 -#define SI2_ISA_IRQ15_SET 0x10 -#define SI2_ISA_IRQ15_CLEAR 0x00 -#define SI2_ISA_INTCLEAR_SET 0x10 -#define SI2_ISA_INTCLEAR_CLEAR 0x00 -#define SI2_ISA_IRQSET_CLEAR 0x10 -#define SI2_ISA_IRQSET_SET 0x00 -#define SI2_ISA_RESET_SET 0x00 -#define SI2_ISA_RESET_CLEAR 0x10 - -/* PCI board details... */ -#define SI2_PCI_WINDOW_LEN 0x100000 /* 1 Mbyte memory window */ - -/* PCI board register definitions... */ -#define SI2_PCI_SET_IRQ 0x40001 /* Set Host Interrupt */ -#define SI2_PCI_RESET 0xC0001 /* Host Reset */ - -/***************************************************************************** -****************************** ****************************** -****************************** Phase 3 T225 ****************************** -****************************** ****************************** -*****************************************************************************/ - -/* General board details... */ -#define SX_WINDOW_LEN 64*1024 /* 64 Kbyte memory window */ - -/* ISA board details... */ -#define SX_ISA_ADDR_LOW 0x0A0000 /* Lowest address = 640 Kbyte */ -#define SX_ISA_ADDR_HIGH 0xFF8000 /* Highest address = 16Mbyte - 32Kbyte */ -#define SX_ISA_ADDR_STEP SX_WINDOW_LEN /* ISA board address step */ -#define SX_ISA_IRQ_MASK 0x9E00 /* IRQs 15,12,11,10,9 */ - -/* Hardware register definitions... */ -#define SX_EVENT_STATUS 0x7800 /* READ: T225 Event Status */ -#define SX_EVENT_STROBE 0x7800 /* WRITE: T225 Event Strobe */ -#define SX_EVENT_ENABLE 0x7880 /* WRITE: T225 Event Enable */ -#define SX_VPD_ROM 0x7C00 /* READ: Vital Product Data ROM */ -#define SX_CONFIG 0x7C00 /* WRITE: Host Configuration Register */ -#define SX_IRQ_STATUS 0x7C80 /* READ: Host Interrupt Status */ -#define SX_SET_IRQ 0x7C80 /* WRITE: Set Host Interrupt */ -#define SX_RESET_STATUS 0x7D00 /* READ: Host Reset Status */ -#define SX_RESET 0x7D00 /* WRITE: Host Reset */ -#define SX_RESET_IRQ 0x7D80 /* WRITE: Reset Host Interrupt */ - -/* SX_VPD_ROM definitions... */ -#define SX_VPD_SLX_ID1 0x00 -#define SX_VPD_SLX_ID2 0x01 -#define SX_VPD_HW_REV 0x02 -#define SX_VPD_HW_ASSEM 0x03 -#define SX_VPD_UNIQUEID4 0x04 -#define SX_VPD_UNIQUEID3 0x05 -#define SX_VPD_UNIQUEID2 0x06 -#define SX_VPD_UNIQUEID1 0x07 -#define SX_VPD_MANU_YEAR 0x08 -#define SX_VPD_MANU_WEEK 0x09 -#define SX_VPD_IDENT 0x10 -#define SX_VPD_IDENT_STRING "JET HOST BY KEV#" - -/* SX unique identifiers... */ -#define SX_UNIQUEID_MASK 0xF0 -#define SX_ISA_UNIQUEID1 0x20 -#define SX_PCI_UNIQUEID1 0x50 - -/* SX_CONFIG definitions... */ -#define SX_CONF_BUSEN 0x02 /* Enable T225 memory and I/O */ -#define SX_CONF_HOSTIRQ 0x04 /* Enable board to host interrupt */ - -/* SX bootstrap... */ -#define SX_BOOTSTRAP "\x28\x20\x21\x02\x60\x0a" -#define SX_BOOTSTRAP_SIZE 6 -#define SX_BOOTSTRAP_ADDR (0x8000-SX_BOOTSTRAP_SIZE) - -/***************************************************************************** -********************************** ********************************** -********************************** EISA ********************************** -********************************** ********************************** -*****************************************************************************/ - -#define SI2_EISA_OFF 0x42 -#define SI2_EISA_VAL 0x01 -#define SI2_EISA_WINDOW_LEN 0x10000 - -/***************************************************************************** -*********************************** ********************************** -*********************************** PCI ********************************** -*********************************** ********************************** -*****************************************************************************/ - -/* General definitions... */ - -#define SPX_VENDOR_ID 0x11CB /* Assigned by the PCI SIG */ -#define SPX_DEVICE_ID 0x4000 /* SI/XIO boards */ -#define SPX_PLXDEVICE_ID 0x2000 /* SX boards */ - -#define SPX_SUB_VENDOR_ID SPX_VENDOR_ID /* Same as vendor id */ -#define SI2_SUB_SYS_ID 0x400 /* Phase 2 (Z280) board */ -#define SX_SUB_SYS_ID 0x200 /* Phase 3 (t225) board */ - -#endif /*_sxboards_h */ - -/* End of SXBOARDS.H */ diff --git a/drivers/char/sxwindow.h b/drivers/char/sxwindow.h deleted file mode 100644 index cf01b662aefc..000000000000 --- a/drivers/char/sxwindow.h +++ /dev/null @@ -1,393 +0,0 @@ -/************************************************************************/ -/* */ -/* Title : SX Shared Memory Window Structure */ -/* */ -/* Author : N.P.Vassallo */ -/* */ -/* Creation : 16th March 1998 */ -/* */ -/* Version : 3.0.0 */ -/* */ -/* Copyright : (c) Specialix International Ltd. 1998 */ -/* */ -/* Description : Prototypes, structures and definitions */ -/* describing the SX/SI/XIO cards shared */ -/* memory window structure: */ -/* SXCARD */ -/* SXMODULE */ -/* SXCHANNEL */ -/* */ -/************************************************************************/ - -/* History... - -3.0.0 16/03/98 NPV Creation. (based on STRUCT.H) - -*/ - -#ifndef _sxwindow_h /* If SXWINDOW.H not already defined */ -#define _sxwindow_h 1 - -/***************************************************************************** -*************************** *************************** -*************************** Common Definitions *************************** -*************************** *************************** -*****************************************************************************/ - -typedef struct _SXCARD *PSXCARD; /* SXCARD structure pointer */ -typedef struct _SXMODULE *PMOD; /* SXMODULE structure pointer */ -typedef struct _SXCHANNEL *PCHAN; /* SXCHANNEL structure pointer */ - -/***************************************************************************** -********************************* ********************************* -********************************* SXCARD ********************************* -********************************* ********************************* -*****************************************************************************/ - -typedef struct _SXCARD -{ - BYTE cc_init_status; /* 0x00 Initialisation status */ - BYTE cc_mem_size; /* 0x01 Size of memory on card */ - WORD cc_int_count; /* 0x02 Interrupt count */ - WORD cc_revision; /* 0x04 Download code revision */ - BYTE cc_isr_count; /* 0x06 Count when ISR is run */ - BYTE cc_main_count; /* 0x07 Count when main loop is run */ - WORD cc_int_pending; /* 0x08 Interrupt pending */ - WORD cc_poll_count; /* 0x0A Count when poll is run */ - BYTE cc_int_set_count; /* 0x0C Count when host interrupt is set */ - BYTE cc_rfu[0x80 - 0x0D]; /* 0x0D Pad structure to 128 bytes (0x80) */ - -} SXCARD; - -/* SXCARD.cc_init_status definitions... */ -#define ADAPTERS_FOUND (BYTE)0x01 -#define NO_ADAPTERS_FOUND (BYTE)0xFF - -/* SXCARD.cc_mem_size definitions... */ -#define SX_MEMORY_SIZE (BYTE)0x40 - -/* SXCARD.cc_int_count definitions... */ -#define INT_COUNT_DEFAULT 100 /* Hz */ - -/***************************************************************************** -******************************** ******************************** -******************************** SXMODULE ******************************** -******************************** ******************************** -*****************************************************************************/ - -#define TOP_POINTER(a) ((a)|0x8000) /* Sets top bit of word */ -#define UNTOP_POINTER(a) ((a)&~0x8000) /* Clears top bit of word */ - -typedef struct _SXMODULE -{ - WORD mc_next; /* 0x00 Next module "pointer" (ORed with 0x8000) */ - BYTE mc_type; /* 0x02 Type of TA in terms of number of channels */ - BYTE mc_mod_no; /* 0x03 Module number on SI bus cable (0 closest to card) */ - BYTE mc_dtr; /* 0x04 Private DTR copy (TA only) */ - BYTE mc_rfu1; /* 0x05 Reserved */ - WORD mc_uart; /* 0x06 UART base address for this module */ - BYTE mc_chip; /* 0x08 Chip type / number of ports */ - BYTE mc_current_uart; /* 0x09 Current uart selected for this module */ -#ifdef DOWNLOAD - PCHAN mc_chan_pointer[8]; /* 0x0A Pointer to each channel structure */ -#else - WORD mc_chan_pointer[8]; /* 0x0A Define as WORD if not compiling into download */ -#endif - WORD mc_rfu2; /* 0x1A Reserved */ - BYTE mc_opens1; /* 0x1C Number of open ports on first four ports on MTA/SXDC */ - BYTE mc_opens2; /* 0x1D Number of open ports on second four ports on MTA/SXDC */ - BYTE mc_mods; /* 0x1E Types of connector module attached to MTA/SXDC */ - BYTE mc_rev1; /* 0x1F Revision of first CD1400 on MTA/SXDC */ - BYTE mc_rev2; /* 0x20 Revision of second CD1400 on MTA/SXDC */ - BYTE mc_mtaasic_rev; /* 0x21 Revision of MTA ASIC 1..4 -> A, B, C, D */ - BYTE mc_rfu3[0x100 - 0x22]; /* 0x22 Pad structure to 256 bytes (0x100) */ - -} SXMODULE; - -/* SXMODULE.mc_type definitions... */ -#define FOUR_PORTS (BYTE)4 -#define EIGHT_PORTS (BYTE)8 - -/* SXMODULE.mc_chip definitions... */ -#define CHIP_MASK 0xF0 -#define TA (BYTE)0 -#define TA4 (TA | FOUR_PORTS) -#define TA8 (TA | EIGHT_PORTS) -#define TA4_ASIC (BYTE)0x0A -#define TA8_ASIC (BYTE)0x0B -#define MTA_CD1400 (BYTE)0x28 -#define SXDC (BYTE)0x48 - -/* SXMODULE.mc_mods definitions... */ -#define MOD_RS232DB25 0x00 /* RS232 DB25 (socket/plug) */ -#define MOD_RS232RJ45 0x01 /* RS232 RJ45 (shielded/opto-isolated) */ -#define MOD_RESERVED_2 0x02 /* Reserved (RS485) */ -#define MOD_RS422DB25 0x03 /* RS422 DB25 Socket */ -#define MOD_RESERVED_4 0x04 /* Reserved */ -#define MOD_PARALLEL 0x05 /* Parallel */ -#define MOD_RESERVED_6 0x06 /* Reserved (RS423) */ -#define MOD_RESERVED_7 0x07 /* Reserved */ -#define MOD_2_RS232DB25 0x08 /* Rev 2.0 RS232 DB25 (socket/plug) */ -#define MOD_2_RS232RJ45 0x09 /* Rev 2.0 RS232 RJ45 */ -#define MOD_RESERVED_A 0x0A /* Rev 2.0 Reserved */ -#define MOD_2_RS422DB25 0x0B /* Rev 2.0 RS422 DB25 */ -#define MOD_RESERVED_C 0x0C /* Rev 2.0 Reserved */ -#define MOD_2_PARALLEL 0x0D /* Rev 2.0 Parallel */ -#define MOD_RESERVED_E 0x0E /* Rev 2.0 Reserved */ -#define MOD_BLANK 0x0F /* Blank Panel */ - -/***************************************************************************** -******************************** ******************************* -******************************** SXCHANNEL ******************************* -******************************** ******************************* -*****************************************************************************/ - -#define TX_BUFF_OFFSET 0x60 /* Transmit buffer offset in channel structure */ -#define BUFF_POINTER(a) (((a)+TX_BUFF_OFFSET)|0x8000) -#define UNBUFF_POINTER(a) (jet_channel*)(((a)&~0x8000)-TX_BUFF_OFFSET) -#define BUFFER_SIZE 256 -#define HIGH_WATER ((BUFFER_SIZE / 4) * 3) -#define LOW_WATER (BUFFER_SIZE / 4) - -typedef struct _SXCHANNEL -{ - WORD next_item; /* 0x00 Offset from window base of next channels hi_txbuf (ORred with 0x8000) */ - WORD addr_uart; /* 0x02 INTERNAL pointer to uart address. Includes FASTPATH bit */ - WORD module; /* 0x04 Offset from window base of parent SXMODULE structure */ - BYTE type; /* 0x06 Chip type / number of ports (copy of mc_chip) */ - BYTE chan_number; /* 0x07 Channel number on the TA/MTA/SXDC */ - WORD xc_status; /* 0x08 Flow control and I/O status */ - BYTE hi_rxipos; /* 0x0A Receive buffer input index */ - BYTE hi_rxopos; /* 0x0B Receive buffer output index */ - BYTE hi_txopos; /* 0x0C Transmit buffer output index */ - BYTE hi_txipos; /* 0x0D Transmit buffer input index */ - BYTE hi_hstat; /* 0x0E Command register */ - BYTE dtr_bit; /* 0x0F INTERNAL DTR control byte (TA only) */ - BYTE txon; /* 0x10 INTERNAL copy of hi_txon */ - BYTE txoff; /* 0x11 INTERNAL copy of hi_txoff */ - BYTE rxon; /* 0x12 INTERNAL copy of hi_rxon */ - BYTE rxoff; /* 0x13 INTERNAL copy of hi_rxoff */ - BYTE hi_mr1; /* 0x14 Mode Register 1 (databits,parity,RTS rx flow)*/ - BYTE hi_mr2; /* 0x15 Mode Register 2 (stopbits,local,CTS tx flow)*/ - BYTE hi_csr; /* 0x16 Clock Select Register (baud rate) */ - BYTE hi_op; /* 0x17 Modem Output Signal */ - BYTE hi_ip; /* 0x18 Modem Input Signal */ - BYTE hi_state; /* 0x19 Channel status */ - BYTE hi_prtcl; /* 0x1A Channel protocol (flow control) */ - BYTE hi_txon; /* 0x1B Transmit XON character */ - BYTE hi_txoff; /* 0x1C Transmit XOFF character */ - BYTE hi_rxon; /* 0x1D Receive XON character */ - BYTE hi_rxoff; /* 0x1E Receive XOFF character */ - BYTE close_prev; /* 0x1F INTERNAL channel previously closed flag */ - BYTE hi_break; /* 0x20 Break and error control */ - BYTE break_state; /* 0x21 INTERNAL copy of hi_break */ - BYTE hi_mask; /* 0x22 Mask for received data */ - BYTE mask; /* 0x23 INTERNAL copy of hi_mask */ - BYTE mod_type; /* 0x24 MTA/SXDC hardware module type */ - BYTE ccr_state; /* 0x25 INTERNAL MTA/SXDC state of CCR register */ - BYTE ip_mask; /* 0x26 Input handshake mask */ - BYTE hi_parallel; /* 0x27 Parallel port flag */ - BYTE par_error; /* 0x28 Error code for parallel loopback test */ - BYTE any_sent; /* 0x29 INTERNAL data sent flag */ - BYTE asic_txfifo_size; /* 0x2A INTERNAL SXDC transmit FIFO size */ - BYTE rfu1[2]; /* 0x2B Reserved */ - BYTE csr; /* 0x2D INTERNAL copy of hi_csr */ -#ifdef DOWNLOAD - PCHAN nextp; /* 0x2E Offset from window base of next channel structure */ -#else - WORD nextp; /* 0x2E Define as WORD if not compiling into download */ -#endif - BYTE prtcl; /* 0x30 INTERNAL copy of hi_prtcl */ - BYTE mr1; /* 0x31 INTERNAL copy of hi_mr1 */ - BYTE mr2; /* 0x32 INTERNAL copy of hi_mr2 */ - BYTE hi_txbaud; /* 0x33 Extended transmit baud rate (SXDC only if((hi_csr&0x0F)==0x0F) */ - BYTE hi_rxbaud; /* 0x34 Extended receive baud rate (SXDC only if((hi_csr&0xF0)==0xF0) */ - BYTE txbreak_state; /* 0x35 INTERNAL MTA/SXDC transmit break state */ - BYTE txbaud; /* 0x36 INTERNAL copy of hi_txbaud */ - BYTE rxbaud; /* 0x37 INTERNAL copy of hi_rxbaud */ - WORD err_framing; /* 0x38 Count of receive framing errors */ - WORD err_parity; /* 0x3A Count of receive parity errors */ - WORD err_overrun; /* 0x3C Count of receive overrun errors */ - WORD err_overflow; /* 0x3E Count of receive buffer overflow errors */ - BYTE rfu2[TX_BUFF_OFFSET - 0x40]; /* 0x40 Reserved until hi_txbuf */ - BYTE hi_txbuf[BUFFER_SIZE]; /* 0x060 Transmit buffer */ - BYTE hi_rxbuf[BUFFER_SIZE]; /* 0x160 Receive buffer */ - BYTE rfu3[0x300 - 0x260]; /* 0x260 Reserved until 768 bytes (0x300) */ - -} SXCHANNEL; - -/* SXCHANNEL.addr_uart definitions... */ -#define FASTPATH 0x1000 /* Set to indicate fast rx/tx processing (TA only) */ - -/* SXCHANNEL.xc_status definitions... */ -#define X_TANY 0x0001 /* XON is any character (TA only) */ -#define X_TION 0x0001 /* Tx interrupts on (MTA only) */ -#define X_TXEN 0x0002 /* Tx XON/XOFF enabled (TA only) */ -#define X_RTSEN 0x0002 /* RTS FLOW enabled (MTA only) */ -#define X_TXRC 0x0004 /* XOFF received (TA only) */ -#define X_RTSLOW 0x0004 /* RTS dropped (MTA only) */ -#define X_RXEN 0x0008 /* Rx XON/XOFF enabled */ -#define X_ANYXO 0x0010 /* XOFF pending/sent or RTS dropped */ -#define X_RXSE 0x0020 /* Rx XOFF sent */ -#define X_NPEND 0x0040 /* Rx XON pending or XOFF pending */ -#define X_FPEND 0x0080 /* Rx XOFF pending */ -#define C_CRSE 0x0100 /* Carriage return sent (TA only) */ -#define C_TEMR 0x0100 /* Tx empty requested (MTA only) */ -#define C_TEMA 0x0200 /* Tx empty acked (MTA only) */ -#define C_ANYP 0x0200 /* Any protocol bar tx XON/XOFF (TA only) */ -#define C_EN 0x0400 /* Cooking enabled (on MTA means port is also || */ -#define C_HIGH 0x0800 /* Buffer previously hit high water */ -#define C_CTSEN 0x1000 /* CTS automatic flow-control enabled */ -#define C_DCDEN 0x2000 /* DCD/DTR checking enabled */ -#define C_BREAK 0x4000 /* Break detected */ -#define C_RTSEN 0x8000 /* RTS automatic flow control enabled (MTA only) */ -#define C_PARITY 0x8000 /* Parity checking enabled (TA only) */ - -/* SXCHANNEL.hi_hstat definitions... */ -#define HS_IDLE_OPEN 0x00 /* Channel open state */ -#define HS_LOPEN 0x02 /* Local open command (no modem monitoring) */ -#define HS_MOPEN 0x04 /* Modem open command (wait for DCD signal) */ -#define HS_IDLE_MPEND 0x06 /* Waiting for DCD signal state */ -#define HS_CONFIG 0x08 /* Configuration command */ -#define HS_CLOSE 0x0A /* Close command */ -#define HS_START 0x0C /* Start transmit break command */ -#define HS_STOP 0x0E /* Stop transmit break command */ -#define HS_IDLE_CLOSED 0x10 /* Closed channel state */ -#define HS_IDLE_BREAK 0x12 /* Transmit break state */ -#define HS_FORCE_CLOSED 0x14 /* Force close command */ -#define HS_RESUME 0x16 /* Clear pending XOFF command */ -#define HS_WFLUSH 0x18 /* Flush transmit buffer command */ -#define HS_RFLUSH 0x1A /* Flush receive buffer command */ -#define HS_SUSPEND 0x1C /* Suspend output command (like XOFF received) */ -#define PARALLEL 0x1E /* Parallel port loopback test command (Diagnostics Only) */ -#define ENABLE_RX_INTS 0x20 /* Enable receive interrupts command (Diagnostics Only) */ -#define ENABLE_TX_INTS 0x22 /* Enable transmit interrupts command (Diagnostics Only) */ -#define ENABLE_MDM_INTS 0x24 /* Enable modem interrupts command (Diagnostics Only) */ -#define DISABLE_INTS 0x26 /* Disable interrupts command (Diagnostics Only) */ - -/* SXCHANNEL.hi_mr1 definitions... */ -#define MR1_BITS 0x03 /* Data bits mask */ -#define MR1_5_BITS 0x00 /* 5 data bits */ -#define MR1_6_BITS 0x01 /* 6 data bits */ -#define MR1_7_BITS 0x02 /* 7 data bits */ -#define MR1_8_BITS 0x03 /* 8 data bits */ -#define MR1_PARITY 0x1C /* Parity mask */ -#define MR1_ODD 0x04 /* Odd parity */ -#define MR1_EVEN 0x00 /* Even parity */ -#define MR1_WITH 0x00 /* Parity enabled */ -#define MR1_FORCE 0x08 /* Force parity */ -#define MR1_NONE 0x10 /* No parity */ -#define MR1_NOPARITY MR1_NONE /* No parity */ -#define MR1_ODDPARITY (MR1_WITH|MR1_ODD) /* Odd parity */ -#define MR1_EVENPARITY (MR1_WITH|MR1_EVEN) /* Even parity */ -#define MR1_MARKPARITY (MR1_FORCE|MR1_ODD) /* Mark parity */ -#define MR1_SPACEPARITY (MR1_FORCE|MR1_EVEN) /* Space parity */ -#define MR1_RTS_RXFLOW 0x80 /* RTS receive flow control */ - -/* SXCHANNEL.hi_mr2 definitions... */ -#define MR2_STOP 0x0F /* Stop bits mask */ -#define MR2_1_STOP 0x07 /* 1 stop bit */ -#define MR2_2_STOP 0x0F /* 2 stop bits */ -#define MR2_CTS_TXFLOW 0x10 /* CTS transmit flow control */ -#define MR2_RTS_TOGGLE 0x20 /* RTS toggle on transmit */ -#define MR2_NORMAL 0x00 /* Normal mode */ -#define MR2_AUTO 0x40 /* Auto-echo mode (TA only) */ -#define MR2_LOCAL 0x80 /* Local echo mode */ -#define MR2_REMOTE 0xC0 /* Remote echo mode (TA only) */ - -/* SXCHANNEL.hi_csr definitions... */ -#define CSR_75 0x0 /* 75 baud */ -#define CSR_110 0x1 /* 110 baud (TA), 115200 (MTA/SXDC) */ -#define CSR_38400 0x2 /* 38400 baud */ -#define CSR_150 0x3 /* 150 baud */ -#define CSR_300 0x4 /* 300 baud */ -#define CSR_600 0x5 /* 600 baud */ -#define CSR_1200 0x6 /* 1200 baud */ -#define CSR_2000 0x7 /* 2000 baud */ -#define CSR_2400 0x8 /* 2400 baud */ -#define CSR_4800 0x9 /* 4800 baud */ -#define CSR_1800 0xA /* 1800 baud */ -#define CSR_9600 0xB /* 9600 baud */ -#define CSR_19200 0xC /* 19200 baud */ -#define CSR_57600 0xD /* 57600 baud */ -#define CSR_EXTBAUD 0xF /* Extended baud rate (hi_txbaud/hi_rxbaud) */ - -/* SXCHANNEL.hi_op definitions... */ -#define OP_RTS 0x01 /* RTS modem output signal */ -#define OP_DTR 0x02 /* DTR modem output signal */ - -/* SXCHANNEL.hi_ip definitions... */ -#define IP_CTS 0x02 /* CTS modem input signal */ -#define IP_DCD 0x04 /* DCD modem input signal */ -#define IP_DSR 0x20 /* DTR modem input signal */ -#define IP_RI 0x40 /* RI modem input signal */ - -/* SXCHANNEL.hi_state definitions... */ -#define ST_BREAK 0x01 /* Break received (clear with config) */ -#define ST_DCD 0x02 /* DCD signal changed state */ - -/* SXCHANNEL.hi_prtcl definitions... */ -#define SP_TANY 0x01 /* Transmit XON/XANY (if SP_TXEN enabled) */ -#define SP_TXEN 0x02 /* Transmit XON/XOFF flow control */ -#define SP_CEN 0x04 /* Cooking enabled */ -#define SP_RXEN 0x08 /* Rx XON/XOFF enabled */ -#define SP_DCEN 0x20 /* DCD / DTR check */ -#define SP_DTR_RXFLOW 0x40 /* DTR receive flow control */ -#define SP_PAEN 0x80 /* Parity checking enabled */ - -/* SXCHANNEL.hi_break definitions... */ -#define BR_IGN 0x01 /* Ignore any received breaks */ -#define BR_INT 0x02 /* Interrupt on received break */ -#define BR_PARMRK 0x04 /* Enable parmrk parity error processing */ -#define BR_PARIGN 0x08 /* Ignore chars with parity errors */ -#define BR_ERRINT 0x80 /* Treat parity/framing/overrun errors as exceptions */ - -/* SXCHANNEL.par_error definitions.. */ -#define DIAG_IRQ_RX 0x01 /* Indicate serial receive interrupt (diags only) */ -#define DIAG_IRQ_TX 0x02 /* Indicate serial transmit interrupt (diags only) */ -#define DIAG_IRQ_MD 0x04 /* Indicate serial modem interrupt (diags only) */ - -/* SXCHANNEL.hi_txbaud/hi_rxbaud definitions... (SXDC only) */ -#define BAUD_75 0x00 /* 75 baud */ -#define BAUD_115200 0x01 /* 115200 baud */ -#define BAUD_38400 0x02 /* 38400 baud */ -#define BAUD_150 0x03 /* 150 baud */ -#define BAUD_300 0x04 /* 300 baud */ -#define BAUD_600 0x05 /* 600 baud */ -#define BAUD_1200 0x06 /* 1200 baud */ -#define BAUD_2000 0x07 /* 2000 baud */ -#define BAUD_2400 0x08 /* 2400 baud */ -#define BAUD_4800 0x09 /* 4800 baud */ -#define BAUD_1800 0x0A /* 1800 baud */ -#define BAUD_9600 0x0B /* 9600 baud */ -#define BAUD_19200 0x0C /* 19200 baud */ -#define BAUD_57600 0x0D /* 57600 baud */ -#define BAUD_230400 0x0E /* 230400 baud */ -#define BAUD_460800 0x0F /* 460800 baud */ -#define BAUD_921600 0x10 /* 921600 baud */ -#define BAUD_50 0x11 /* 50 baud */ -#define BAUD_110 0x12 /* 110 baud */ -#define BAUD_134_5 0x13 /* 134.5 baud */ -#define BAUD_200 0x14 /* 200 baud */ -#define BAUD_7200 0x15 /* 7200 baud */ -#define BAUD_56000 0x16 /* 56000 baud */ -#define BAUD_64000 0x17 /* 64000 baud */ -#define BAUD_76800 0x18 /* 76800 baud */ -#define BAUD_128000 0x19 /* 128000 baud */ -#define BAUD_150000 0x1A /* 150000 baud */ -#define BAUD_14400 0x1B /* 14400 baud */ -#define BAUD_256000 0x1C /* 256000 baud */ -#define BAUD_28800 0x1D /* 28800 baud */ - -/* SXCHANNEL.txbreak_state definiions... */ -#define TXBREAK_OFF 0 /* Not sending break */ -#define TXBREAK_START 1 /* Begin sending break */ -#define TXBREAK_START1 2 /* Begin sending break, part 1 */ -#define TXBREAK_ON 3 /* Sending break */ -#define TXBREAK_STOP 4 /* Stop sending break */ -#define TXBREAK_STOP1 5 /* Stop sending break, part 1 */ - -#endif /* _sxwindow_h */ - -/* End of SXWINDOW.H */ - diff --git a/drivers/char/vme_scc.c b/drivers/char/vme_scc.c deleted file mode 100644 index 96838640f575..000000000000 --- a/drivers/char/vme_scc.c +++ /dev/null @@ -1,1145 +0,0 @@ -/* - * drivers/char/vme_scc.c: MVME147, MVME162, BVME6000 SCC serial ports - * implementation. - * Copyright 1999 Richard Hirst - * - * Based on atari_SCC.c which was - * Copyright 1994-95 Roman Hodek - * Partially based on PC-Linux serial.c by Linus Torvalds and Theodore Ts'o - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifdef CONFIG_MVME147_SCC -#include -#endif -#ifdef CONFIG_MVME162_SCC -#include -#endif -#ifdef CONFIG_BVME6000_SCC -#include -#endif - -#include -#include "scc.h" - - -#define CHANNEL_A 0 -#define CHANNEL_B 1 - -#define SCC_MINOR_BASE 64 - -/* Shadows for all SCC write registers */ -static unsigned char scc_shadow[2][16]; - -/* Location to access for SCC register access delay */ -static volatile unsigned char *scc_del = NULL; - -/* To keep track of STATUS_REG state for detection of Ext/Status int source */ -static unsigned char scc_last_status_reg[2]; - -/***************************** Prototypes *****************************/ - -/* Function prototypes */ -static void scc_disable_tx_interrupts(void * ptr); -static void scc_enable_tx_interrupts(void * ptr); -static void scc_disable_rx_interrupts(void * ptr); -static void scc_enable_rx_interrupts(void * ptr); -static int scc_carrier_raised(struct tty_port *port); -static void scc_shutdown_port(void * ptr); -static int scc_set_real_termios(void *ptr); -static void scc_hungup(void *ptr); -static void scc_close(void *ptr); -static int scc_chars_in_buffer(void * ptr); -static int scc_open(struct tty_struct * tty, struct file * filp); -static int scc_ioctl(struct tty_struct * tty, - unsigned int cmd, unsigned long arg); -static void scc_throttle(struct tty_struct *tty); -static void scc_unthrottle(struct tty_struct *tty); -static irqreturn_t scc_tx_int(int irq, void *data); -static irqreturn_t scc_rx_int(int irq, void *data); -static irqreturn_t scc_stat_int(int irq, void *data); -static irqreturn_t scc_spcond_int(int irq, void *data); -static void scc_setsignals(struct scc_port *port, int dtr, int rts); -static int scc_break_ctl(struct tty_struct *tty, int break_state); - -static struct tty_driver *scc_driver; - -static struct scc_port scc_ports[2]; - -/*--------------------------------------------------------------------------- - * Interface from generic_serial.c back here - *--------------------------------------------------------------------------*/ - -static struct real_driver scc_real_driver = { - scc_disable_tx_interrupts, - scc_enable_tx_interrupts, - scc_disable_rx_interrupts, - scc_enable_rx_interrupts, - scc_shutdown_port, - scc_set_real_termios, - scc_chars_in_buffer, - scc_close, - scc_hungup, - NULL -}; - - -static const struct tty_operations scc_ops = { - .open = scc_open, - .close = gs_close, - .write = gs_write, - .put_char = gs_put_char, - .flush_chars = gs_flush_chars, - .write_room = gs_write_room, - .chars_in_buffer = gs_chars_in_buffer, - .flush_buffer = gs_flush_buffer, - .ioctl = scc_ioctl, - .throttle = scc_throttle, - .unthrottle = scc_unthrottle, - .set_termios = gs_set_termios, - .stop = gs_stop, - .start = gs_start, - .hangup = gs_hangup, - .break_ctl = scc_break_ctl, -}; - -static const struct tty_port_operations scc_port_ops = { - .carrier_raised = scc_carrier_raised, -}; - -/*---------------------------------------------------------------------------- - * vme_scc_init() and support functions - *---------------------------------------------------------------------------*/ - -static int __init scc_init_drivers(void) -{ - int error; - - scc_driver = alloc_tty_driver(2); - if (!scc_driver) - return -ENOMEM; - scc_driver->owner = THIS_MODULE; - scc_driver->driver_name = "scc"; - scc_driver->name = "ttyS"; - scc_driver->major = TTY_MAJOR; - scc_driver->minor_start = SCC_MINOR_BASE; - scc_driver->type = TTY_DRIVER_TYPE_SERIAL; - scc_driver->subtype = SERIAL_TYPE_NORMAL; - scc_driver->init_termios = tty_std_termios; - scc_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - scc_driver->init_termios.c_ispeed = 9600; - scc_driver->init_termios.c_ospeed = 9600; - scc_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(scc_driver, &scc_ops); - - if ((error = tty_register_driver(scc_driver))) { - printk(KERN_ERR "scc: Couldn't register scc driver, error = %d\n", - error); - put_tty_driver(scc_driver); - return 1; - } - - return 0; -} - - -/* ports[] array is indexed by line no (i.e. [0] for ttyS0, [1] for ttyS1). - */ - -static void __init scc_init_portstructs(void) -{ - struct scc_port *port; - int i; - - for (i = 0; i < 2; i++) { - port = scc_ports + i; - tty_port_init(&port->gs.port); - port->gs.port.ops = &scc_port_ops; - port->gs.magic = SCC_MAGIC; - port->gs.close_delay = HZ/2; - port->gs.closing_wait = 30 * HZ; - port->gs.rd = &scc_real_driver; -#ifdef NEW_WRITE_LOCKING - port->gs.port_write_mutex = MUTEX; -#endif - init_waitqueue_head(&port->gs.port.open_wait); - init_waitqueue_head(&port->gs.port.close_wait); - } -} - - -#ifdef CONFIG_MVME147_SCC -static int __init mvme147_scc_init(void) -{ - struct scc_port *port; - int error; - - printk(KERN_INFO "SCC: MVME147 Serial Driver\n"); - /* Init channel A */ - port = &scc_ports[0]; - port->channel = CHANNEL_A; - port->ctrlp = (volatile unsigned char *)M147_SCC_A_ADDR; - port->datap = port->ctrlp + 1; - port->port_a = &scc_ports[0]; - port->port_b = &scc_ports[1]; - error = request_irq(MVME147_IRQ_SCCA_TX, scc_tx_int, IRQF_DISABLED, - "SCC-A TX", port); - if (error) - goto fail; - error = request_irq(MVME147_IRQ_SCCA_STAT, scc_stat_int, IRQF_DISABLED, - "SCC-A status", port); - if (error) - goto fail_free_a_tx; - error = request_irq(MVME147_IRQ_SCCA_RX, scc_rx_int, IRQF_DISABLED, - "SCC-A RX", port); - if (error) - goto fail_free_a_stat; - error = request_irq(MVME147_IRQ_SCCA_SPCOND, scc_spcond_int, - IRQF_DISABLED, "SCC-A special cond", port); - if (error) - goto fail_free_a_rx; - - { - SCC_ACCESS_INIT(port); - - /* disable interrupts for this channel */ - SCCwrite(INT_AND_DMA_REG, 0); - /* Set the interrupt vector */ - SCCwrite(INT_VECTOR_REG, MVME147_IRQ_SCC_BASE); - /* Interrupt parameters: vector includes status, status low */ - SCCwrite(MASTER_INT_CTRL, MIC_VEC_INCL_STAT); - SCCmod(MASTER_INT_CTRL, 0xff, MIC_MASTER_INT_ENAB); - } - - /* Init channel B */ - port = &scc_ports[1]; - port->channel = CHANNEL_B; - port->ctrlp = (volatile unsigned char *)M147_SCC_B_ADDR; - port->datap = port->ctrlp + 1; - port->port_a = &scc_ports[0]; - port->port_b = &scc_ports[1]; - error = request_irq(MVME147_IRQ_SCCB_TX, scc_tx_int, IRQF_DISABLED, - "SCC-B TX", port); - if (error) - goto fail_free_a_spcond; - error = request_irq(MVME147_IRQ_SCCB_STAT, scc_stat_int, IRQF_DISABLED, - "SCC-B status", port); - if (error) - goto fail_free_b_tx; - error = request_irq(MVME147_IRQ_SCCB_RX, scc_rx_int, IRQF_DISABLED, - "SCC-B RX", port); - if (error) - goto fail_free_b_stat; - error = request_irq(MVME147_IRQ_SCCB_SPCOND, scc_spcond_int, - IRQF_DISABLED, "SCC-B special cond", port); - if (error) - goto fail_free_b_rx; - - { - SCC_ACCESS_INIT(port); - - /* disable interrupts for this channel */ - SCCwrite(INT_AND_DMA_REG, 0); - } - - /* Ensure interrupts are enabled in the PCC chip */ - m147_pcc->serial_cntrl=PCC_LEVEL_SERIAL|PCC_INT_ENAB; - - /* Initialise the tty driver structures and register */ - scc_init_portstructs(); - scc_init_drivers(); - - return 0; - -fail_free_b_rx: - free_irq(MVME147_IRQ_SCCB_RX, port); -fail_free_b_stat: - free_irq(MVME147_IRQ_SCCB_STAT, port); -fail_free_b_tx: - free_irq(MVME147_IRQ_SCCB_TX, port); -fail_free_a_spcond: - free_irq(MVME147_IRQ_SCCA_SPCOND, port); -fail_free_a_rx: - free_irq(MVME147_IRQ_SCCA_RX, port); -fail_free_a_stat: - free_irq(MVME147_IRQ_SCCA_STAT, port); -fail_free_a_tx: - free_irq(MVME147_IRQ_SCCA_TX, port); -fail: - return error; -} -#endif - - -#ifdef CONFIG_MVME162_SCC -static int __init mvme162_scc_init(void) -{ - struct scc_port *port; - int error; - - if (!(mvme16x_config & MVME16x_CONFIG_GOT_SCCA)) - return (-ENODEV); - - printk(KERN_INFO "SCC: MVME162 Serial Driver\n"); - /* Init channel A */ - port = &scc_ports[0]; - port->channel = CHANNEL_A; - port->ctrlp = (volatile unsigned char *)MVME_SCC_A_ADDR; - port->datap = port->ctrlp + 2; - port->port_a = &scc_ports[0]; - port->port_b = &scc_ports[1]; - error = request_irq(MVME162_IRQ_SCCA_TX, scc_tx_int, IRQF_DISABLED, - "SCC-A TX", port); - if (error) - goto fail; - error = request_irq(MVME162_IRQ_SCCA_STAT, scc_stat_int, IRQF_DISABLED, - "SCC-A status", port); - if (error) - goto fail_free_a_tx; - error = request_irq(MVME162_IRQ_SCCA_RX, scc_rx_int, IRQF_DISABLED, - "SCC-A RX", port); - if (error) - goto fail_free_a_stat; - error = request_irq(MVME162_IRQ_SCCA_SPCOND, scc_spcond_int, - IRQF_DISABLED, "SCC-A special cond", port); - if (error) - goto fail_free_a_rx; - - { - SCC_ACCESS_INIT(port); - - /* disable interrupts for this channel */ - SCCwrite(INT_AND_DMA_REG, 0); - /* Set the interrupt vector */ - SCCwrite(INT_VECTOR_REG, MVME162_IRQ_SCC_BASE); - /* Interrupt parameters: vector includes status, status low */ - SCCwrite(MASTER_INT_CTRL, MIC_VEC_INCL_STAT); - SCCmod(MASTER_INT_CTRL, 0xff, MIC_MASTER_INT_ENAB); - } - - /* Init channel B */ - port = &scc_ports[1]; - port->channel = CHANNEL_B; - port->ctrlp = (volatile unsigned char *)MVME_SCC_B_ADDR; - port->datap = port->ctrlp + 2; - port->port_a = &scc_ports[0]; - port->port_b = &scc_ports[1]; - error = request_irq(MVME162_IRQ_SCCB_TX, scc_tx_int, IRQF_DISABLED, - "SCC-B TX", port); - if (error) - goto fail_free_a_spcond; - error = request_irq(MVME162_IRQ_SCCB_STAT, scc_stat_int, IRQF_DISABLED, - "SCC-B status", port); - if (error) - goto fail_free_b_tx; - error = request_irq(MVME162_IRQ_SCCB_RX, scc_rx_int, IRQF_DISABLED, - "SCC-B RX", port); - if (error) - goto fail_free_b_stat; - error = request_irq(MVME162_IRQ_SCCB_SPCOND, scc_spcond_int, - IRQF_DISABLED, "SCC-B special cond", port); - if (error) - goto fail_free_b_rx; - - { - SCC_ACCESS_INIT(port); /* Either channel will do */ - - /* disable interrupts for this channel */ - SCCwrite(INT_AND_DMA_REG, 0); - } - - /* Ensure interrupts are enabled in the MC2 chip */ - *(volatile char *)0xfff4201d = 0x14; - - /* Initialise the tty driver structures and register */ - scc_init_portstructs(); - scc_init_drivers(); - - return 0; - -fail_free_b_rx: - free_irq(MVME162_IRQ_SCCB_RX, port); -fail_free_b_stat: - free_irq(MVME162_IRQ_SCCB_STAT, port); -fail_free_b_tx: - free_irq(MVME162_IRQ_SCCB_TX, port); -fail_free_a_spcond: - free_irq(MVME162_IRQ_SCCA_SPCOND, port); -fail_free_a_rx: - free_irq(MVME162_IRQ_SCCA_RX, port); -fail_free_a_stat: - free_irq(MVME162_IRQ_SCCA_STAT, port); -fail_free_a_tx: - free_irq(MVME162_IRQ_SCCA_TX, port); -fail: - return error; -} -#endif - - -#ifdef CONFIG_BVME6000_SCC -static int __init bvme6000_scc_init(void) -{ - struct scc_port *port; - int error; - - printk(KERN_INFO "SCC: BVME6000 Serial Driver\n"); - /* Init channel A */ - port = &scc_ports[0]; - port->channel = CHANNEL_A; - port->ctrlp = (volatile unsigned char *)BVME_SCC_A_ADDR; - port->datap = port->ctrlp + 4; - port->port_a = &scc_ports[0]; - port->port_b = &scc_ports[1]; - error = request_irq(BVME_IRQ_SCCA_TX, scc_tx_int, IRQF_DISABLED, - "SCC-A TX", port); - if (error) - goto fail; - error = request_irq(BVME_IRQ_SCCA_STAT, scc_stat_int, IRQF_DISABLED, - "SCC-A status", port); - if (error) - goto fail_free_a_tx; - error = request_irq(BVME_IRQ_SCCA_RX, scc_rx_int, IRQF_DISABLED, - "SCC-A RX", port); - if (error) - goto fail_free_a_stat; - error = request_irq(BVME_IRQ_SCCA_SPCOND, scc_spcond_int, - IRQF_DISABLED, "SCC-A special cond", port); - if (error) - goto fail_free_a_rx; - - { - SCC_ACCESS_INIT(port); - - /* disable interrupts for this channel */ - SCCwrite(INT_AND_DMA_REG, 0); - /* Set the interrupt vector */ - SCCwrite(INT_VECTOR_REG, BVME_IRQ_SCC_BASE); - /* Interrupt parameters: vector includes status, status low */ - SCCwrite(MASTER_INT_CTRL, MIC_VEC_INCL_STAT); - SCCmod(MASTER_INT_CTRL, 0xff, MIC_MASTER_INT_ENAB); - } - - /* Init channel B */ - port = &scc_ports[1]; - port->channel = CHANNEL_B; - port->ctrlp = (volatile unsigned char *)BVME_SCC_B_ADDR; - port->datap = port->ctrlp + 4; - port->port_a = &scc_ports[0]; - port->port_b = &scc_ports[1]; - error = request_irq(BVME_IRQ_SCCB_TX, scc_tx_int, IRQF_DISABLED, - "SCC-B TX", port); - if (error) - goto fail_free_a_spcond; - error = request_irq(BVME_IRQ_SCCB_STAT, scc_stat_int, IRQF_DISABLED, - "SCC-B status", port); - if (error) - goto fail_free_b_tx; - error = request_irq(BVME_IRQ_SCCB_RX, scc_rx_int, IRQF_DISABLED, - "SCC-B RX", port); - if (error) - goto fail_free_b_stat; - error = request_irq(BVME_IRQ_SCCB_SPCOND, scc_spcond_int, - IRQF_DISABLED, "SCC-B special cond", port); - if (error) - goto fail_free_b_rx; - - { - SCC_ACCESS_INIT(port); /* Either channel will do */ - - /* disable interrupts for this channel */ - SCCwrite(INT_AND_DMA_REG, 0); - } - - /* Initialise the tty driver structures and register */ - scc_init_portstructs(); - scc_init_drivers(); - - return 0; - -fail: - free_irq(BVME_IRQ_SCCA_STAT, port); -fail_free_a_tx: - free_irq(BVME_IRQ_SCCA_RX, port); -fail_free_a_stat: - free_irq(BVME_IRQ_SCCA_SPCOND, port); -fail_free_a_rx: - free_irq(BVME_IRQ_SCCB_TX, port); -fail_free_a_spcond: - free_irq(BVME_IRQ_SCCB_STAT, port); -fail_free_b_tx: - free_irq(BVME_IRQ_SCCB_RX, port); -fail_free_b_stat: - free_irq(BVME_IRQ_SCCB_SPCOND, port); -fail_free_b_rx: - return error; -} -#endif - - -static int __init vme_scc_init(void) -{ - int res = -ENODEV; - -#ifdef CONFIG_MVME147_SCC - if (MACH_IS_MVME147) - res = mvme147_scc_init(); -#endif -#ifdef CONFIG_MVME162_SCC - if (MACH_IS_MVME16x) - res = mvme162_scc_init(); -#endif -#ifdef CONFIG_BVME6000_SCC - if (MACH_IS_BVME6000) - res = bvme6000_scc_init(); -#endif - return res; -} - -module_init(vme_scc_init); - - -/*--------------------------------------------------------------------------- - * Interrupt handlers - *--------------------------------------------------------------------------*/ - -static irqreturn_t scc_rx_int(int irq, void *data) -{ - unsigned char ch; - struct scc_port *port = data; - struct tty_struct *tty = port->gs.port.tty; - SCC_ACCESS_INIT(port); - - ch = SCCread_NB(RX_DATA_REG); - if (!tty) { - printk(KERN_WARNING "scc_rx_int with NULL tty!\n"); - SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); - return IRQ_HANDLED; - } - tty_insert_flip_char(tty, ch, 0); - - /* Check if another character is already ready; in that case, the - * spcond_int() function must be used, because this character may have an - * error condition that isn't signalled by the interrupt vector used! - */ - if (SCCread(INT_PENDING_REG) & - (port->channel == CHANNEL_A ? IPR_A_RX : IPR_B_RX)) { - scc_spcond_int (irq, data); - return IRQ_HANDLED; - } - - SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); - - tty_flip_buffer_push(tty); - return IRQ_HANDLED; -} - - -static irqreturn_t scc_spcond_int(int irq, void *data) -{ - struct scc_port *port = data; - struct tty_struct *tty = port->gs.port.tty; - unsigned char stat, ch, err; - int int_pending_mask = port->channel == CHANNEL_A ? - IPR_A_RX : IPR_B_RX; - SCC_ACCESS_INIT(port); - - if (!tty) { - printk(KERN_WARNING "scc_spcond_int with NULL tty!\n"); - SCCwrite(COMMAND_REG, CR_ERROR_RESET); - SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); - return IRQ_HANDLED; - } - do { - stat = SCCread(SPCOND_STATUS_REG); - ch = SCCread_NB(RX_DATA_REG); - - if (stat & SCSR_RX_OVERRUN) - err = TTY_OVERRUN; - else if (stat & SCSR_PARITY_ERR) - err = TTY_PARITY; - else if (stat & SCSR_CRC_FRAME_ERR) - err = TTY_FRAME; - else - err = 0; - - tty_insert_flip_char(tty, ch, err); - - /* ++TeSche: *All* errors have to be cleared manually, - * else the condition persists for the next chars - */ - if (err) - SCCwrite(COMMAND_REG, CR_ERROR_RESET); - - } while(SCCread(INT_PENDING_REG) & int_pending_mask); - - SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); - - tty_flip_buffer_push(tty); - return IRQ_HANDLED; -} - - -static irqreturn_t scc_tx_int(int irq, void *data) -{ - struct scc_port *port = data; - SCC_ACCESS_INIT(port); - - if (!port->gs.port.tty) { - printk(KERN_WARNING "scc_tx_int with NULL tty!\n"); - SCCmod (INT_AND_DMA_REG, ~IDR_TX_INT_ENAB, 0); - SCCwrite(COMMAND_REG, CR_TX_PENDING_RESET); - SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); - return IRQ_HANDLED; - } - while ((SCCread_NB(STATUS_REG) & SR_TX_BUF_EMPTY)) { - if (port->x_char) { - SCCwrite(TX_DATA_REG, port->x_char); - port->x_char = 0; - } - else if ((port->gs.xmit_cnt <= 0) || - port->gs.port.tty->stopped || - port->gs.port.tty->hw_stopped) - break; - else { - SCCwrite(TX_DATA_REG, port->gs.xmit_buf[port->gs.xmit_tail++]); - port->gs.xmit_tail = port->gs.xmit_tail & (SERIAL_XMIT_SIZE-1); - if (--port->gs.xmit_cnt <= 0) - break; - } - } - if ((port->gs.xmit_cnt <= 0) || port->gs.port.tty->stopped || - port->gs.port.tty->hw_stopped) { - /* disable tx interrupts */ - SCCmod (INT_AND_DMA_REG, ~IDR_TX_INT_ENAB, 0); - SCCwrite(COMMAND_REG, CR_TX_PENDING_RESET); /* disable tx_int on next tx underrun? */ - port->gs.port.flags &= ~GS_TX_INTEN; - } - if (port->gs.port.tty && port->gs.xmit_cnt <= port->gs.wakeup_chars) - tty_wakeup(port->gs.port.tty); - - SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); - return IRQ_HANDLED; -} - - -static irqreturn_t scc_stat_int(int irq, void *data) -{ - struct scc_port *port = data; - unsigned channel = port->channel; - unsigned char last_sr, sr, changed; - SCC_ACCESS_INIT(port); - - last_sr = scc_last_status_reg[channel]; - sr = scc_last_status_reg[channel] = SCCread_NB(STATUS_REG); - changed = last_sr ^ sr; - - if (changed & SR_DCD) { - port->c_dcd = !!(sr & SR_DCD); - if (!(port->gs.port.flags & ASYNC_CHECK_CD)) - ; /* Don't report DCD changes */ - else if (port->c_dcd) { - wake_up_interruptible(&port->gs.port.open_wait); - } - else { - if (port->gs.port.tty) - tty_hangup (port->gs.port.tty); - } - } - SCCwrite(COMMAND_REG, CR_EXTSTAT_RESET); - SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); - return IRQ_HANDLED; -} - - -/*--------------------------------------------------------------------------- - * generic_serial.c callback funtions - *--------------------------------------------------------------------------*/ - -static void scc_disable_tx_interrupts(void *ptr) -{ - struct scc_port *port = ptr; - unsigned long flags; - SCC_ACCESS_INIT(port); - - local_irq_save(flags); - SCCmod(INT_AND_DMA_REG, ~IDR_TX_INT_ENAB, 0); - port->gs.port.flags &= ~GS_TX_INTEN; - local_irq_restore(flags); -} - - -static void scc_enable_tx_interrupts(void *ptr) -{ - struct scc_port *port = ptr; - unsigned long flags; - SCC_ACCESS_INIT(port); - - local_irq_save(flags); - SCCmod(INT_AND_DMA_REG, 0xff, IDR_TX_INT_ENAB); - /* restart the transmitter */ - scc_tx_int (0, port); - local_irq_restore(flags); -} - - -static void scc_disable_rx_interrupts(void *ptr) -{ - struct scc_port *port = ptr; - unsigned long flags; - SCC_ACCESS_INIT(port); - - local_irq_save(flags); - SCCmod(INT_AND_DMA_REG, - ~(IDR_RX_INT_MASK|IDR_PARERR_AS_SPCOND|IDR_EXTSTAT_INT_ENAB), 0); - local_irq_restore(flags); -} - - -static void scc_enable_rx_interrupts(void *ptr) -{ - struct scc_port *port = ptr; - unsigned long flags; - SCC_ACCESS_INIT(port); - - local_irq_save(flags); - SCCmod(INT_AND_DMA_REG, 0xff, - IDR_EXTSTAT_INT_ENAB|IDR_PARERR_AS_SPCOND|IDR_RX_INT_ALL); - local_irq_restore(flags); -} - - -static int scc_carrier_raised(struct tty_port *port) -{ - struct scc_port *sc = container_of(port, struct scc_port, gs.port); - unsigned channel = sc->channel; - - return !!(scc_last_status_reg[channel] & SR_DCD); -} - - -static void scc_shutdown_port(void *ptr) -{ - struct scc_port *port = ptr; - - port->gs.port.flags &= ~ GS_ACTIVE; - if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) { - scc_setsignals (port, 0, 0); - } -} - - -static int scc_set_real_termios (void *ptr) -{ - /* the SCC has char sizes 5,7,6,8 in that order! */ - static int chsize_map[4] = { 0, 2, 1, 3 }; - unsigned cflag, baud, chsize, channel, brgval = 0; - unsigned long flags; - struct scc_port *port = ptr; - SCC_ACCESS_INIT(port); - - if (!port->gs.port.tty || !port->gs.port.tty->termios) return 0; - - channel = port->channel; - - if (channel == CHANNEL_A) - return 0; /* Settings controlled by boot PROM */ - - cflag = port->gs.port.tty->termios->c_cflag; - baud = port->gs.baud; - chsize = (cflag & CSIZE) >> 4; - - if (baud == 0) { - /* speed == 0 -> drop DTR */ - local_irq_save(flags); - SCCmod(TX_CTRL_REG, ~TCR_DTR, 0); - local_irq_restore(flags); - return 0; - } - else if ((MACH_IS_MVME16x && (baud < 50 || baud > 38400)) || - (MACH_IS_MVME147 && (baud < 50 || baud > 19200)) || - (MACH_IS_BVME6000 &&(baud < 50 || baud > 76800))) { - printk(KERN_NOTICE "SCC: Bad speed requested, %d\n", baud); - return 0; - } - - if (cflag & CLOCAL) - port->gs.port.flags &= ~ASYNC_CHECK_CD; - else - port->gs.port.flags |= ASYNC_CHECK_CD; - -#ifdef CONFIG_MVME147_SCC - if (MACH_IS_MVME147) - brgval = (M147_SCC_PCLK + baud/2) / (16 * 2 * baud) - 2; -#endif -#ifdef CONFIG_MVME162_SCC - if (MACH_IS_MVME16x) - brgval = (MVME_SCC_PCLK + baud/2) / (16 * 2 * baud) - 2; -#endif -#ifdef CONFIG_BVME6000_SCC - if (MACH_IS_BVME6000) - brgval = (BVME_SCC_RTxC + baud/2) / (16 * 2 * baud) - 2; -#endif - /* Now we have all parameters and can go to set them: */ - local_irq_save(flags); - - /* receiver's character size and auto-enables */ - SCCmod(RX_CTRL_REG, ~(RCR_CHSIZE_MASK|RCR_AUTO_ENAB_MODE), - (chsize_map[chsize] << 6) | - ((cflag & CRTSCTS) ? RCR_AUTO_ENAB_MODE : 0)); - /* parity and stop bits (both, Tx and Rx), clock mode never changes */ - SCCmod (AUX1_CTRL_REG, - ~(A1CR_PARITY_MASK | A1CR_MODE_MASK), - ((cflag & PARENB - ? (cflag & PARODD ? A1CR_PARITY_ODD : A1CR_PARITY_EVEN) - : A1CR_PARITY_NONE) - | (cflag & CSTOPB ? A1CR_MODE_ASYNC_2 : A1CR_MODE_ASYNC_1))); - /* sender's character size, set DTR for valid baud rate */ - SCCmod(TX_CTRL_REG, ~TCR_CHSIZE_MASK, chsize_map[chsize] << 5 | TCR_DTR); - /* clock sources never change */ - /* disable BRG before changing the value */ - SCCmod(DPLL_CTRL_REG, ~DCR_BRG_ENAB, 0); - /* BRG value */ - SCCwrite(TIMER_LOW_REG, brgval & 0xff); - SCCwrite(TIMER_HIGH_REG, (brgval >> 8) & 0xff); - /* BRG enable, and clock source never changes */ - SCCmod(DPLL_CTRL_REG, 0xff, DCR_BRG_ENAB); - - local_irq_restore(flags); - - return 0; -} - - -static int scc_chars_in_buffer (void *ptr) -{ - struct scc_port *port = ptr; - SCC_ACCESS_INIT(port); - - return (SCCread (SPCOND_STATUS_REG) & SCSR_ALL_SENT) ? 0 : 1; -} - - -/* Comment taken from sx.c (2.4.0): - I haven't the foggiest why the decrement use count has to happen - here. The whole linux serial drivers stuff needs to be redesigned. - My guess is that this is a hack to minimize the impact of a bug - elsewhere. Thinking about it some more. (try it sometime) Try - running minicom on a serial port that is driven by a modularized - driver. Have the modem hangup. Then remove the driver module. Then - exit minicom. I expect an "oops". -- REW */ - -static void scc_hungup(void *ptr) -{ - scc_disable_tx_interrupts(ptr); - scc_disable_rx_interrupts(ptr); -} - - -static void scc_close(void *ptr) -{ - scc_disable_tx_interrupts(ptr); - scc_disable_rx_interrupts(ptr); -} - - -/*--------------------------------------------------------------------------- - * Internal support functions - *--------------------------------------------------------------------------*/ - -static void scc_setsignals(struct scc_port *port, int dtr, int rts) -{ - unsigned long flags; - unsigned char t; - SCC_ACCESS_INIT(port); - - local_irq_save(flags); - t = SCCread(TX_CTRL_REG); - if (dtr >= 0) t = dtr? (t | TCR_DTR): (t & ~TCR_DTR); - if (rts >= 0) t = rts? (t | TCR_RTS): (t & ~TCR_RTS); - SCCwrite(TX_CTRL_REG, t); - local_irq_restore(flags); -} - - -static void scc_send_xchar(struct tty_struct *tty, char ch) -{ - struct scc_port *port = tty->driver_data; - - port->x_char = ch; - if (ch) - scc_enable_tx_interrupts(port); -} - - -/*--------------------------------------------------------------------------- - * Driver entrypoints referenced from above - *--------------------------------------------------------------------------*/ - -static int scc_open (struct tty_struct * tty, struct file * filp) -{ - int line = tty->index; - int retval; - struct scc_port *port = &scc_ports[line]; - int i, channel = port->channel; - unsigned long flags; - SCC_ACCESS_INIT(port); -#if defined(CONFIG_MVME162_SCC) || defined(CONFIG_MVME147_SCC) - static const struct { - unsigned reg, val; - } mvme_init_tab[] = { - /* Values for MVME162 and MVME147 */ - /* no parity, 1 stop bit, async, 1:16 */ - { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, - /* parity error is special cond, ints disabled, no DMA */ - { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, - /* Rx 8 bits/char, no auto enable, Rx off */ - { RX_CTRL_REG, RCR_CHSIZE_8 }, - /* DTR off, Tx 8 bits/char, RTS off, Tx off */ - { TX_CTRL_REG, TCR_CHSIZE_8 }, - /* special features off */ - { AUX2_CTRL_REG, 0 }, - { CLK_CTRL_REG, CCR_RXCLK_BRG | CCR_TXCLK_BRG }, - { DPLL_CTRL_REG, DCR_BRG_ENAB | DCR_BRG_USE_PCLK }, - /* Start Rx */ - { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, - /* Start Tx */ - { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, - /* Ext/Stat ints: DCD only */ - { INT_CTRL_REG, ICR_ENAB_DCD_INT }, - /* Reset Ext/Stat ints */ - { COMMAND_REG, CR_EXTSTAT_RESET }, - /* ...again */ - { COMMAND_REG, CR_EXTSTAT_RESET }, - }; -#endif -#if defined(CONFIG_BVME6000_SCC) - static const struct { - unsigned reg, val; - } bvme_init_tab[] = { - /* Values for BVME6000 */ - /* no parity, 1 stop bit, async, 1:16 */ - { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, - /* parity error is special cond, ints disabled, no DMA */ - { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, - /* Rx 8 bits/char, no auto enable, Rx off */ - { RX_CTRL_REG, RCR_CHSIZE_8 }, - /* DTR off, Tx 8 bits/char, RTS off, Tx off */ - { TX_CTRL_REG, TCR_CHSIZE_8 }, - /* special features off */ - { AUX2_CTRL_REG, 0 }, - { CLK_CTRL_REG, CCR_RTxC_XTAL | CCR_RXCLK_BRG | CCR_TXCLK_BRG }, - { DPLL_CTRL_REG, DCR_BRG_ENAB }, - /* Start Rx */ - { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, - /* Start Tx */ - { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, - /* Ext/Stat ints: DCD only */ - { INT_CTRL_REG, ICR_ENAB_DCD_INT }, - /* Reset Ext/Stat ints */ - { COMMAND_REG, CR_EXTSTAT_RESET }, - /* ...again */ - { COMMAND_REG, CR_EXTSTAT_RESET }, - }; -#endif - if (!(port->gs.port.flags & ASYNC_INITIALIZED)) { - local_irq_save(flags); -#if defined(CONFIG_MVME147_SCC) || defined(CONFIG_MVME162_SCC) - if (MACH_IS_MVME147 || MACH_IS_MVME16x) { - for (i = 0; i < ARRAY_SIZE(mvme_init_tab); ++i) - SCCwrite(mvme_init_tab[i].reg, mvme_init_tab[i].val); - } -#endif -#if defined(CONFIG_BVME6000_SCC) - if (MACH_IS_BVME6000) { - for (i = 0; i < ARRAY_SIZE(bvme_init_tab); ++i) - SCCwrite(bvme_init_tab[i].reg, bvme_init_tab[i].val); - } -#endif - - /* remember status register for detection of DCD and CTS changes */ - scc_last_status_reg[channel] = SCCread(STATUS_REG); - - port->c_dcd = 0; /* Prevent initial 1->0 interrupt */ - scc_setsignals (port, 1,1); - local_irq_restore(flags); - } - - tty->driver_data = port; - port->gs.port.tty = tty; - port->gs.port.count++; - retval = gs_init_port(&port->gs); - if (retval) { - port->gs.port.count--; - return retval; - } - port->gs.port.flags |= GS_ACTIVE; - retval = gs_block_til_ready(port, filp); - - if (retval) { - port->gs.port.count--; - return retval; - } - - port->c_dcd = tty_port_carrier_raised(&port->gs.port); - - scc_enable_rx_interrupts(port); - - return 0; -} - - -static void scc_throttle (struct tty_struct * tty) -{ - struct scc_port *port = tty->driver_data; - unsigned long flags; - SCC_ACCESS_INIT(port); - - if (tty->termios->c_cflag & CRTSCTS) { - local_irq_save(flags); - SCCmod(TX_CTRL_REG, ~TCR_RTS, 0); - local_irq_restore(flags); - } - if (I_IXOFF(tty)) - scc_send_xchar(tty, STOP_CHAR(tty)); -} - - -static void scc_unthrottle (struct tty_struct * tty) -{ - struct scc_port *port = tty->driver_data; - unsigned long flags; - SCC_ACCESS_INIT(port); - - if (tty->termios->c_cflag & CRTSCTS) { - local_irq_save(flags); - SCCmod(TX_CTRL_REG, 0xff, TCR_RTS); - local_irq_restore(flags); - } - if (I_IXOFF(tty)) - scc_send_xchar(tty, START_CHAR(tty)); -} - - -static int scc_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - return -ENOIOCTLCMD; -} - - -static int scc_break_ctl(struct tty_struct *tty, int break_state) -{ - struct scc_port *port = tty->driver_data; - unsigned long flags; - SCC_ACCESS_INIT(port); - - local_irq_save(flags); - SCCmod(TX_CTRL_REG, ~TCR_SEND_BREAK, - break_state ? TCR_SEND_BREAK : 0); - local_irq_restore(flags); - return 0; -} - - -/*--------------------------------------------------------------------------- - * Serial console stuff... - *--------------------------------------------------------------------------*/ - -#define scc_delay() do { __asm__ __volatile__ (" nop; nop"); } while (0) - -static void scc_ch_write (char ch) -{ - volatile char *p = NULL; - -#ifdef CONFIG_MVME147_SCC - if (MACH_IS_MVME147) - p = (volatile char *)M147_SCC_A_ADDR; -#endif -#ifdef CONFIG_MVME162_SCC - if (MACH_IS_MVME16x) - p = (volatile char *)MVME_SCC_A_ADDR; -#endif -#ifdef CONFIG_BVME6000_SCC - if (MACH_IS_BVME6000) - p = (volatile char *)BVME_SCC_A_ADDR; -#endif - - do { - scc_delay(); - } - while (!(*p & 4)); - scc_delay(); - *p = 8; - scc_delay(); - *p = ch; -} - -/* The console must be locked when we get here. */ - -static void scc_console_write (struct console *co, const char *str, unsigned count) -{ - unsigned long flags; - - local_irq_save(flags); - - while (count--) - { - if (*str == '\n') - scc_ch_write ('\r'); - scc_ch_write (*str++); - } - local_irq_restore(flags); -} - -static struct tty_driver *scc_console_device(struct console *c, int *index) -{ - *index = c->index; - return scc_driver; -} - -static struct console sercons = { - .name = "ttyS", - .write = scc_console_write, - .device = scc_console_device, - .flags = CON_PRINTBUFFER, - .index = -1, -}; - - -static int __init vme_scc_console_init(void) -{ - if (vme_brdtype == VME_TYPE_MVME147 || - vme_brdtype == VME_TYPE_MVME162 || - vme_brdtype == VME_TYPE_MVME172 || - vme_brdtype == VME_TYPE_BVME4000 || - vme_brdtype == VME_TYPE_BVME6000) - register_console(&sercons); - return 0; -} -console_initcall(vme_scc_console_init); diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index fb1fc4e5a8cb..58e4a8e15a0e 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -43,6 +43,8 @@ if !STAGING_EXCLUDE_BUILD source "drivers/staging/tty/Kconfig" +source "drivers/staging/generic_serial/Kconfig" + source "drivers/staging/et131x/Kconfig" source "drivers/staging/slicoss/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index f498e345a01d..ff7372d25c91 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_STAGING) += staging.o obj-y += tty/ +obj-y += generic_serial/ obj-$(CONFIG_ET131X) += et131x/ obj-$(CONFIG_SLICOSS) += slicoss/ obj-$(CONFIG_VIDEO_GO7007) += go7007/ diff --git a/drivers/staging/generic_serial/Kconfig b/drivers/staging/generic_serial/Kconfig new file mode 100644 index 000000000000..795daea37750 --- /dev/null +++ b/drivers/staging/generic_serial/Kconfig @@ -0,0 +1,45 @@ +config A2232 + tristate "Commodore A2232 serial support (EXPERIMENTAL)" + depends on EXPERIMENTAL && ZORRO && BROKEN + ---help--- + This option supports the 2232 7-port serial card shipped with the + Amiga 2000 and other Zorro-bus machines, dating from 1989. At + a max of 19,200 bps, the ports are served by a 6551 ACIA UART chip + each, plus a 8520 CIA, and a master 6502 CPU and buffer as well. The + ports were connected with 8 pin DIN connectors on the card bracket, + for which 8 pin to DB25 adapters were supplied. The card also had + jumpers internally to toggle various pinning configurations. + + This driver can be built as a module; but then "generic_serial" + will also be built as a module. This has to be loaded before + "ser_a2232". If you want to do this, answer M here. + +config SX + tristate "Specialix SX (and SI) card support" + depends on SERIAL_NONSTANDARD && (PCI || EISA || ISA) && BROKEN + help + This is a driver for the SX and SI multiport serial cards. + Please read the file for details. + + This driver can only be built as a module ( = code which can be + inserted in and removed from the running kernel whenever you want). + The module will be called sx. If you want to do that, say M here. + +config RIO + tristate "Specialix RIO system support" + depends on SERIAL_NONSTANDARD && BROKEN + help + This is a driver for the Specialix RIO, a smart serial card which + drives an outboard box that can support up to 128 ports. Product + information is at . + There are both ISA and PCI versions. + +config RIO_OLDPCI + bool "Support really old RIO/PCI cards" + depends on RIO + help + Older RIO PCI cards need some initialization-time configuration to + determine the IRQ and some control addresses. If you have a RIO and + this doesn't seem to work, try setting this to Y. + + diff --git a/drivers/staging/generic_serial/Makefile b/drivers/staging/generic_serial/Makefile new file mode 100644 index 000000000000..ffc90c8b013c --- /dev/null +++ b/drivers/staging/generic_serial/Makefile @@ -0,0 +1,6 @@ +obj-$(CONFIG_MVME147_SCC) += generic_serial.o vme_scc.o +obj-$(CONFIG_MVME162_SCC) += generic_serial.o vme_scc.o +obj-$(CONFIG_BVME6000_SCC) += generic_serial.o vme_scc.o +obj-$(CONFIG_A2232) += ser_a2232.o generic_serial.o +obj-$(CONFIG_SX) += sx.o generic_serial.o +obj-$(CONFIG_RIO) += rio/ generic_serial.o diff --git a/drivers/staging/generic_serial/TODO b/drivers/staging/generic_serial/TODO new file mode 100644 index 000000000000..88756453ac6c --- /dev/null +++ b/drivers/staging/generic_serial/TODO @@ -0,0 +1,6 @@ +These are a few tty/serial drivers that either do not build, +or work if they do build, or if they seem to work, are for obsolete +hardware, or are full of unfixable races and no one uses them anymore. + +If no one steps up to adopt any of these drivers, they will be removed +in the 2.6.41 release. diff --git a/drivers/staging/generic_serial/generic_serial.c b/drivers/staging/generic_serial/generic_serial.c new file mode 100644 index 000000000000..5954ee1dc953 --- /dev/null +++ b/drivers/staging/generic_serial/generic_serial.c @@ -0,0 +1,844 @@ +/* + * generic_serial.c + * + * Copyright (C) 1998/1999 R.E.Wolff@BitWizard.nl + * + * written for the SX serial driver. + * Contains the code that should be shared over all the serial drivers. + * + * Credit for the idea to do it this way might go to Alan Cox. + * + * + * Version 0.1 -- December, 1998. Initial version. + * Version 0.2 -- March, 1999. Some more routines. Bugfixes. Etc. + * Version 0.5 -- August, 1999. Some more fixes. Reformat for Linus. + * + * BitWizard is actively maintaining this file. We sometimes find + * that someone submitted changes to this file. We really appreciate + * your help, but please submit changes through us. We're doing our + * best to be responsive. -- REW + * */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DEBUG + +static int gs_debug; + +#ifdef DEBUG +#define gs_dprintk(f, str...) if (gs_debug & f) printk (str) +#else +#define gs_dprintk(f, str...) /* nothing */ +#endif + +#define func_enter() gs_dprintk (GS_DEBUG_FLOW, "gs: enter %s\n", __func__) +#define func_exit() gs_dprintk (GS_DEBUG_FLOW, "gs: exit %s\n", __func__) + +#define RS_EVENT_WRITE_WAKEUP 1 + +module_param(gs_debug, int, 0644); + + +int gs_put_char(struct tty_struct * tty, unsigned char ch) +{ + struct gs_port *port; + + func_enter (); + + port = tty->driver_data; + + if (!port) return 0; + + if (! (port->port.flags & ASYNC_INITIALIZED)) return 0; + + /* Take a lock on the serial tranmit buffer! */ + mutex_lock(& port->port_write_mutex); + + if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { + /* Sorry, buffer is full, drop character. Update statistics???? -- REW */ + mutex_unlock(&port->port_write_mutex); + return 0; + } + + port->xmit_buf[port->xmit_head++] = ch; + port->xmit_head &= SERIAL_XMIT_SIZE - 1; + port->xmit_cnt++; /* Characters in buffer */ + + mutex_unlock(&port->port_write_mutex); + func_exit (); + return 1; +} + + +/* +> Problems to take into account are: +> -1- Interrupts that empty part of the buffer. +> -2- page faults on the access to userspace. +> -3- Other processes that are also trying to do a "write". +*/ + +int gs_write(struct tty_struct * tty, + const unsigned char *buf, int count) +{ + struct gs_port *port; + int c, total = 0; + int t; + + func_enter (); + + port = tty->driver_data; + + if (!port) return 0; + + if (! (port->port.flags & ASYNC_INITIALIZED)) + return 0; + + /* get exclusive "write" access to this port (problem 3) */ + /* This is not a spinlock because we can have a disk access (page + fault) in copy_from_user */ + mutex_lock(& port->port_write_mutex); + + while (1) { + + c = count; + + /* This is safe because we "OWN" the "head". Noone else can + change the "head": we own the port_write_mutex. */ + /* Don't overrun the end of the buffer */ + t = SERIAL_XMIT_SIZE - port->xmit_head; + if (t < c) c = t; + + /* This is safe because the xmit_cnt can only decrease. This + would increase "t", so we might copy too little chars. */ + /* Don't copy past the "head" of the buffer */ + t = SERIAL_XMIT_SIZE - 1 - port->xmit_cnt; + if (t < c) c = t; + + /* Can't copy more? break out! */ + if (c <= 0) break; + + memcpy (port->xmit_buf + port->xmit_head, buf, c); + + port -> xmit_cnt += c; + port -> xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE -1); + buf += c; + count -= c; + total += c; + } + mutex_unlock(& port->port_write_mutex); + + gs_dprintk (GS_DEBUG_WRITE, "write: interrupts are %s\n", + (port->port.flags & GS_TX_INTEN)?"enabled": "disabled"); + + if (port->xmit_cnt && + !tty->stopped && + !tty->hw_stopped && + !(port->port.flags & GS_TX_INTEN)) { + port->port.flags |= GS_TX_INTEN; + port->rd->enable_tx_interrupts (port); + } + func_exit (); + return total; +} + + + +int gs_write_room(struct tty_struct * tty) +{ + struct gs_port *port = tty->driver_data; + int ret; + + func_enter (); + ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; + if (ret < 0) + ret = 0; + func_exit (); + return ret; +} + + +int gs_chars_in_buffer(struct tty_struct *tty) +{ + struct gs_port *port = tty->driver_data; + func_enter (); + + func_exit (); + return port->xmit_cnt; +} + + +static int gs_real_chars_in_buffer(struct tty_struct *tty) +{ + struct gs_port *port; + func_enter (); + + port = tty->driver_data; + + if (!port->rd) return 0; + if (!port->rd->chars_in_buffer) return 0; + + func_exit (); + return port->xmit_cnt + port->rd->chars_in_buffer (port); +} + + +static int gs_wait_tx_flushed (void * ptr, unsigned long timeout) +{ + struct gs_port *port = ptr; + unsigned long end_jiffies; + int jiffies_to_transmit, charsleft = 0, rv = 0; + int rcib; + + func_enter(); + + gs_dprintk (GS_DEBUG_FLUSH, "port=%p.\n", port); + if (port) { + gs_dprintk (GS_DEBUG_FLUSH, "xmit_cnt=%x, xmit_buf=%p, tty=%p.\n", + port->xmit_cnt, port->xmit_buf, port->port.tty); + } + + if (!port || port->xmit_cnt < 0 || !port->xmit_buf) { + gs_dprintk (GS_DEBUG_FLUSH, "ERROR: !port, !port->xmit_buf or prot->xmit_cnt < 0.\n"); + func_exit(); + return -EINVAL; /* This is an error which we don't know how to handle. */ + } + + rcib = gs_real_chars_in_buffer(port->port.tty); + + if(rcib <= 0) { + gs_dprintk (GS_DEBUG_FLUSH, "nothing to wait for.\n"); + func_exit(); + return rv; + } + /* stop trying: now + twice the time it would normally take + seconds */ + if (timeout == 0) timeout = MAX_SCHEDULE_TIMEOUT; + end_jiffies = jiffies; + if (timeout != MAX_SCHEDULE_TIMEOUT) + end_jiffies += port->baud?(2 * rcib * 10 * HZ / port->baud):0; + end_jiffies += timeout; + + gs_dprintk (GS_DEBUG_FLUSH, "now=%lx, end=%lx (%ld).\n", + jiffies, end_jiffies, end_jiffies-jiffies); + + /* the expression is actually jiffies < end_jiffies, but that won't + work around the wraparound. Tricky eh? */ + while ((charsleft = gs_real_chars_in_buffer (port->port.tty)) && + time_after (end_jiffies, jiffies)) { + /* Units check: + chars * (bits/char) * (jiffies /sec) / (bits/sec) = jiffies! + check! */ + + charsleft += 16; /* Allow 16 chars more to be transmitted ... */ + jiffies_to_transmit = port->baud?(1 + charsleft * 10 * HZ / port->baud):0; + /* ^^^ Round up.... */ + if (jiffies_to_transmit <= 0) jiffies_to_transmit = 1; + + gs_dprintk (GS_DEBUG_FLUSH, "Expect to finish in %d jiffies " + "(%d chars).\n", jiffies_to_transmit, charsleft); + + msleep_interruptible(jiffies_to_msecs(jiffies_to_transmit)); + if (signal_pending (current)) { + gs_dprintk (GS_DEBUG_FLUSH, "Signal pending. Bombing out: "); + rv = -EINTR; + break; + } + } + + gs_dprintk (GS_DEBUG_FLUSH, "charsleft = %d.\n", charsleft); + set_current_state (TASK_RUNNING); + + func_exit(); + return rv; +} + + + +void gs_flush_buffer(struct tty_struct *tty) +{ + struct gs_port *port; + unsigned long flags; + + func_enter (); + + port = tty->driver_data; + + if (!port) return; + + /* XXX Would the write semaphore do? */ + spin_lock_irqsave (&port->driver_lock, flags); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore (&port->driver_lock, flags); + + tty_wakeup(tty); + func_exit (); +} + + +void gs_flush_chars(struct tty_struct * tty) +{ + struct gs_port *port; + + func_enter (); + + port = tty->driver_data; + + if (!port) return; + + if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || + !port->xmit_buf) { + func_exit (); + return; + } + + /* Beats me -- REW */ + port->port.flags |= GS_TX_INTEN; + port->rd->enable_tx_interrupts (port); + func_exit (); +} + + +void gs_stop(struct tty_struct * tty) +{ + struct gs_port *port; + + func_enter (); + + port = tty->driver_data; + + if (!port) return; + + if (port->xmit_cnt && + port->xmit_buf && + (port->port.flags & GS_TX_INTEN) ) { + port->port.flags &= ~GS_TX_INTEN; + port->rd->disable_tx_interrupts (port); + } + func_exit (); +} + + +void gs_start(struct tty_struct * tty) +{ + struct gs_port *port; + + port = tty->driver_data; + + if (!port) return; + + if (port->xmit_cnt && + port->xmit_buf && + !(port->port.flags & GS_TX_INTEN) ) { + port->port.flags |= GS_TX_INTEN; + port->rd->enable_tx_interrupts (port); + } + func_exit (); +} + + +static void gs_shutdown_port (struct gs_port *port) +{ + unsigned long flags; + + func_enter(); + + if (!port) return; + + if (!(port->port.flags & ASYNC_INITIALIZED)) + return; + + spin_lock_irqsave(&port->driver_lock, flags); + + if (port->xmit_buf) { + free_page((unsigned long) port->xmit_buf); + port->xmit_buf = NULL; + } + + if (port->port.tty) + set_bit(TTY_IO_ERROR, &port->port.tty->flags); + + port->rd->shutdown_port (port); + + port->port.flags &= ~ASYNC_INITIALIZED; + spin_unlock_irqrestore(&port->driver_lock, flags); + + func_exit(); +} + + +void gs_hangup(struct tty_struct *tty) +{ + struct gs_port *port; + unsigned long flags; + + func_enter (); + + port = tty->driver_data; + tty = port->port.tty; + if (!tty) + return; + + gs_shutdown_port (port); + spin_lock_irqsave(&port->port.lock, flags); + port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|GS_ACTIVE); + port->port.tty = NULL; + port->port.count = 0; + spin_unlock_irqrestore(&port->port.lock, flags); + + wake_up_interruptible(&port->port.open_wait); + func_exit (); +} + + +int gs_block_til_ready(void *port_, struct file * filp) +{ + struct gs_port *gp = port_; + struct tty_port *port = &gp->port; + DECLARE_WAITQUEUE(wait, current); + int retval; + int do_clocal = 0; + int CD; + struct tty_struct *tty; + unsigned long flags; + + func_enter (); + + if (!port) return 0; + + tty = port->tty; + + gs_dprintk (GS_DEBUG_BTR, "Entering gs_block_till_ready.\n"); + /* + * If the device is in the middle of being closed, then block + * until it's done, and then try again. + */ + if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { + interruptible_sleep_on(&port->close_wait); + if (port->flags & ASYNC_HUP_NOTIFY) + return -EAGAIN; + else + return -ERESTARTSYS; + } + + gs_dprintk (GS_DEBUG_BTR, "after hung up\n"); + + /* + * If non-blocking mode is set, or the port is not enabled, + * then make the check up front and then exit. + */ + if ((filp->f_flags & O_NONBLOCK) || + (tty->flags & (1 << TTY_IO_ERROR))) { + port->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + gs_dprintk (GS_DEBUG_BTR, "after nonblock\n"); + + if (C_CLOCAL(tty)) + do_clocal = 1; + + /* + * Block waiting for the carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, port->count is dropped by one, so that + * rs_close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + retval = 0; + + add_wait_queue(&port->open_wait, &wait); + + gs_dprintk (GS_DEBUG_BTR, "after add waitq.\n"); + spin_lock_irqsave(&port->lock, flags); + if (!tty_hung_up_p(filp)) { + port->count--; + } + port->blocked_open++; + spin_unlock_irqrestore(&port->lock, flags); + while (1) { + CD = tty_port_carrier_raised(port); + gs_dprintk (GS_DEBUG_BTR, "CD is now %d.\n", CD); + set_current_state (TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp) || + !(port->flags & ASYNC_INITIALIZED)) { + if (port->flags & ASYNC_HUP_NOTIFY) + retval = -EAGAIN; + else + retval = -ERESTARTSYS; + break; + } + if (!(port->flags & ASYNC_CLOSING) && + (do_clocal || CD)) + break; + gs_dprintk (GS_DEBUG_BTR, "signal_pending is now: %d (%lx)\n", + (int)signal_pending (current), *(long*)(¤t->blocked)); + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + schedule(); + } + gs_dprintk (GS_DEBUG_BTR, "Got out of the loop. (%d)\n", + port->blocked_open); + set_current_state (TASK_RUNNING); + remove_wait_queue(&port->open_wait, &wait); + + spin_lock_irqsave(&port->lock, flags); + if (!tty_hung_up_p(filp)) { + port->count++; + } + port->blocked_open--; + if (retval == 0) + port->flags |= ASYNC_NORMAL_ACTIVE; + spin_unlock_irqrestore(&port->lock, flags); + func_exit (); + return retval; +} + + +void gs_close(struct tty_struct * tty, struct file * filp) +{ + unsigned long flags; + struct gs_port *port; + + func_enter (); + + port = tty->driver_data; + + if (!port) return; + + if (!port->port.tty) { + /* This seems to happen when this is called from vhangup. */ + gs_dprintk (GS_DEBUG_CLOSE, "gs: Odd: port->port.tty is NULL\n"); + port->port.tty = tty; + } + + spin_lock_irqsave(&port->port.lock, flags); + + if (tty_hung_up_p(filp)) { + spin_unlock_irqrestore(&port->port.lock, flags); + if (port->rd->hungup) + port->rd->hungup (port); + func_exit (); + return; + } + + if ((tty->count == 1) && (port->port.count != 1)) { + printk(KERN_ERR "gs: gs_close port %p: bad port count;" + " tty->count is 1, port count is %d\n", port, port->port.count); + port->port.count = 1; + } + if (--port->port.count < 0) { + printk(KERN_ERR "gs: gs_close port %p: bad port count: %d\n", port, port->port.count); + port->port.count = 0; + } + + if (port->port.count) { + gs_dprintk(GS_DEBUG_CLOSE, "gs_close port %p: count: %d\n", port, port->port.count); + spin_unlock_irqrestore(&port->port.lock, flags); + func_exit (); + return; + } + port->port.flags |= ASYNC_CLOSING; + + /* + * Now we wait for the transmit buffer to clear; and we notify + * the line discipline to only process XON/XOFF characters. + */ + tty->closing = 1; + /* if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) + tty_wait_until_sent(tty, port->closing_wait); */ + + /* + * At this point we stop accepting input. To do this, we + * disable the receive line status interrupts, and tell the + * interrupt driver to stop checking the data ready bit in the + * line status register. + */ + + spin_lock_irqsave(&port->driver_lock, flags); + port->rd->disable_rx_interrupts (port); + spin_unlock_irqrestore(&port->driver_lock, flags); + spin_unlock_irqrestore(&port->port.lock, flags); + + /* close has no way of returning "EINTR", so discard return value */ + if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) + gs_wait_tx_flushed (port, port->closing_wait); + + port->port.flags &= ~GS_ACTIVE; + + gs_flush_buffer(tty); + + tty_ldisc_flush(tty); + tty->closing = 0; + + spin_lock_irqsave(&port->driver_lock, flags); + port->event = 0; + port->rd->close (port); + port->rd->shutdown_port (port); + spin_unlock_irqrestore(&port->driver_lock, flags); + + spin_lock_irqsave(&port->port.lock, flags); + port->port.tty = NULL; + + if (port->port.blocked_open) { + if (port->close_delay) { + spin_unlock_irqrestore(&port->port.lock, flags); + msleep_interruptible(jiffies_to_msecs(port->close_delay)); + spin_lock_irqsave(&port->port.lock, flags); + } + wake_up_interruptible(&port->port.open_wait); + } + port->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING | ASYNC_INITIALIZED); + spin_unlock_irqrestore(&port->port.lock, flags); + wake_up_interruptible(&port->port.close_wait); + + func_exit (); +} + + +void gs_set_termios (struct tty_struct * tty, + struct ktermios * old_termios) +{ + struct gs_port *port; + int baudrate, tmp, rv; + struct ktermios *tiosp; + + func_enter(); + + port = tty->driver_data; + + if (!port) return; + if (!port->port.tty) { + /* This seems to happen when this is called after gs_close. */ + gs_dprintk (GS_DEBUG_TERMIOS, "gs: Odd: port->port.tty is NULL\n"); + port->port.tty = tty; + } + + + tiosp = tty->termios; + + if (gs_debug & GS_DEBUG_TERMIOS) { + gs_dprintk (GS_DEBUG_TERMIOS, "termios structure (%p):\n", tiosp); + } + + if(old_termios && (gs_debug & GS_DEBUG_TERMIOS)) { + if(tiosp->c_iflag != old_termios->c_iflag) printk("c_iflag changed\n"); + if(tiosp->c_oflag != old_termios->c_oflag) printk("c_oflag changed\n"); + if(tiosp->c_cflag != old_termios->c_cflag) printk("c_cflag changed\n"); + if(tiosp->c_lflag != old_termios->c_lflag) printk("c_lflag changed\n"); + if(tiosp->c_line != old_termios->c_line) printk("c_line changed\n"); + if(!memcmp(tiosp->c_cc, old_termios->c_cc, NCC)) printk("c_cc changed\n"); + } + + baudrate = tty_get_baud_rate(tty); + + if ((tiosp->c_cflag & CBAUD) == B38400) { + if ( (port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + baudrate = 57600; + else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + baudrate = 115200; + else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + baudrate = 230400; + else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + baudrate = 460800; + else if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) + baudrate = (port->baud_base / port->custom_divisor); + } + + /* I recommend using THIS instead of the mess in termios (and + duplicating the above code). Next we should create a clean + interface towards this variable. If your card supports arbitrary + baud rates, (e.g. CD1400 or 16550 based cards) then everything + will be very easy..... */ + port->baud = baudrate; + + /* Two timer ticks seems enough to wakeup something like SLIP driver */ + /* Baudrate/10 is cps. Divide by HZ to get chars per tick. */ + tmp = (baudrate / 10 / HZ) * 2; + + if (tmp < 0) tmp = 0; + if (tmp >= SERIAL_XMIT_SIZE) tmp = SERIAL_XMIT_SIZE-1; + + port->wakeup_chars = tmp; + + /* We should really wait for the characters to be all sent before + changing the settings. -- CAL */ + rv = gs_wait_tx_flushed (port, MAX_SCHEDULE_TIMEOUT); + if (rv < 0) return /* rv */; + + rv = port->rd->set_real_termios(port); + if (rv < 0) return /* rv */; + + if ((!old_termios || + (old_termios->c_cflag & CRTSCTS)) && + !( tiosp->c_cflag & CRTSCTS)) { + tty->stopped = 0; + gs_start(tty); + } + +#ifdef tytso_patch_94Nov25_1726 + /* This "makes sense", Why is it commented out? */ + + if (!(old_termios->c_cflag & CLOCAL) && + (tty->termios->c_cflag & CLOCAL)) + wake_up_interruptible(&port->gs.open_wait); +#endif + + func_exit(); + return /* 0 */; +} + + + +/* Must be called with interrupts enabled */ +int gs_init_port(struct gs_port *port) +{ + unsigned long flags; + + func_enter (); + + if (port->port.flags & ASYNC_INITIALIZED) { + func_exit (); + return 0; + } + if (!port->xmit_buf) { + /* We may sleep in get_zeroed_page() */ + unsigned long tmp; + + tmp = get_zeroed_page(GFP_KERNEL); + spin_lock_irqsave (&port->driver_lock, flags); + if (port->xmit_buf) + free_page (tmp); + else + port->xmit_buf = (unsigned char *) tmp; + spin_unlock_irqrestore(&port->driver_lock, flags); + if (!port->xmit_buf) { + func_exit (); + return -ENOMEM; + } + } + + spin_lock_irqsave (&port->driver_lock, flags); + if (port->port.tty) + clear_bit(TTY_IO_ERROR, &port->port.tty->flags); + mutex_init(&port->port_write_mutex); + port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; + spin_unlock_irqrestore(&port->driver_lock, flags); + gs_set_termios(port->port.tty, NULL); + spin_lock_irqsave (&port->driver_lock, flags); + port->port.flags |= ASYNC_INITIALIZED; + port->port.flags &= ~GS_TX_INTEN; + + spin_unlock_irqrestore(&port->driver_lock, flags); + func_exit (); + return 0; +} + + +int gs_setserial(struct gs_port *port, struct serial_struct __user *sp) +{ + struct serial_struct sio; + + if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) + return(-EFAULT); + + if (!capable(CAP_SYS_ADMIN)) { + if ((sio.baud_base != port->baud_base) || + (sio.close_delay != port->close_delay) || + ((sio.flags & ~ASYNC_USR_MASK) != + (port->port.flags & ~ASYNC_USR_MASK))) + return(-EPERM); + } + + port->port.flags = (port->port.flags & ~ASYNC_USR_MASK) | + (sio.flags & ASYNC_USR_MASK); + + port->baud_base = sio.baud_base; + port->close_delay = sio.close_delay; + port->closing_wait = sio.closing_wait; + port->custom_divisor = sio.custom_divisor; + + gs_set_termios (port->port.tty, NULL); + + return 0; +} + + +/*****************************************************************************/ + +/* + * Generate the serial struct info. + */ + +int gs_getserial(struct gs_port *port, struct serial_struct __user *sp) +{ + struct serial_struct sio; + + memset(&sio, 0, sizeof(struct serial_struct)); + sio.flags = port->port.flags; + sio.baud_base = port->baud_base; + sio.close_delay = port->close_delay; + sio.closing_wait = port->closing_wait; + sio.custom_divisor = port->custom_divisor; + sio.hub6 = 0; + + /* If you want you can override these. */ + sio.type = PORT_UNKNOWN; + sio.xmit_fifo_size = -1; + sio.line = -1; + sio.port = -1; + sio.irq = -1; + + if (port->rd->getserial) + port->rd->getserial (port, &sio); + + if (copy_to_user(sp, &sio, sizeof(struct serial_struct))) + return -EFAULT; + return 0; + +} + + +void gs_got_break(struct gs_port *port) +{ + func_enter (); + + tty_insert_flip_char(port->port.tty, 0, TTY_BREAK); + tty_schedule_flip(port->port.tty); + if (port->port.flags & ASYNC_SAK) { + do_SAK (port->port.tty); + } + + func_exit (); +} + + +EXPORT_SYMBOL(gs_put_char); +EXPORT_SYMBOL(gs_write); +EXPORT_SYMBOL(gs_write_room); +EXPORT_SYMBOL(gs_chars_in_buffer); +EXPORT_SYMBOL(gs_flush_buffer); +EXPORT_SYMBOL(gs_flush_chars); +EXPORT_SYMBOL(gs_stop); +EXPORT_SYMBOL(gs_start); +EXPORT_SYMBOL(gs_hangup); +EXPORT_SYMBOL(gs_block_til_ready); +EXPORT_SYMBOL(gs_close); +EXPORT_SYMBOL(gs_set_termios); +EXPORT_SYMBOL(gs_init_port); +EXPORT_SYMBOL(gs_setserial); +EXPORT_SYMBOL(gs_getserial); +EXPORT_SYMBOL(gs_got_break); + +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/generic_serial/rio/Makefile b/drivers/staging/generic_serial/rio/Makefile new file mode 100644 index 000000000000..1661875883fb --- /dev/null +++ b/drivers/staging/generic_serial/rio/Makefile @@ -0,0 +1,12 @@ +# +# Makefile for the linux rio-subsystem. +# +# (C) R.E.Wolff@BitWizard.nl +# +# This file is GPL. See other files for the full Blurb. I'm lazy today. +# + +obj-$(CONFIG_RIO) += rio.o + +rio-y := rio_linux.o rioinit.o rioboot.o riocmd.o rioctrl.o riointr.o \ + rioparam.o rioroute.o riotable.o riotty.o diff --git a/drivers/staging/generic_serial/rio/board.h b/drivers/staging/generic_serial/rio/board.h new file mode 100644 index 000000000000..bdea633a9076 --- /dev/null +++ b/drivers/staging/generic_serial/rio/board.h @@ -0,0 +1,132 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : board.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:07 +** Retrieved : 11/6/98 11:34:20 +** +** ident @(#)board.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_board_h__ +#define __rio_board_h__ + +/* +** board.h contains the definitions for the *hardware* of the host cards. +** It describes the memory overlay for the dual port RAM area. +*/ + +#define DP_SRAM1_SIZE 0x7C00 +#define DP_SRAM2_SIZE 0x0200 +#define DP_SRAM3_SIZE 0x7000 +#define DP_SCRATCH_SIZE 0x1000 +#define DP_PARMMAP_ADDR 0x01FE /* offset into SRAM2 */ +#define DP_STARTUP_ADDR 0x01F8 /* offset into SRAM2 */ + +/* +** The shape of the Host Control area, at offset 0x7C00, Write Only +*/ +struct s_Ctrl { + u8 DpCtl; /* 7C00 */ + u8 Dp_Unused2_[127]; + u8 DpIntSet; /* 7C80 */ + u8 Dp_Unused3_[127]; + u8 DpTpuReset; /* 7D00 */ + u8 Dp_Unused4_[127]; + u8 DpIntReset; /* 7D80 */ + u8 Dp_Unused5_[127]; +}; + +/* +** The PROM data area on the host (0x7C00), Read Only +*/ +struct s_Prom { + u16 DpSlxCode[2]; + u16 DpRev; + u16 Dp_Unused6_; + u16 DpUniq[4]; + u16 DpJahre; + u16 DpWoche; + u16 DpHwFeature[5]; + u16 DpOemId; + u16 DpSiggy[16]; +}; + +/* +** Union of the Ctrl and Prom areas +*/ +union u_CtrlProm { /* This is the control/PROM area (0x7C00) */ + struct s_Ctrl DpCtrl; + struct s_Prom DpProm; +}; + +/* +** The top end of memory! +*/ +struct s_ParmMapS { /* Area containing Parm Map Pointer */ + u8 Dp_Unused8_[DP_PARMMAP_ADDR]; + u16 DpParmMapAd; +}; + +struct s_StartUpS { + u8 Dp_Unused9_[DP_STARTUP_ADDR]; + u8 Dp_LongJump[0x4]; + u8 Dp_Unused10_[2]; + u8 Dp_ShortJump[0x2]; +}; + +union u_Sram2ParmMap { /* This is the top of memory (0x7E00-0x7FFF) */ + u8 DpSramMem[DP_SRAM2_SIZE]; + struct s_ParmMapS DpParmMapS; + struct s_StartUpS DpStartUpS; +}; + +/* +** This is the DP RAM overlay. +*/ +struct DpRam { + u8 DpSram1[DP_SRAM1_SIZE]; /* 0000 - 7BFF */ + union u_CtrlProm DpCtrlProm; /* 7C00 - 7DFF */ + union u_Sram2ParmMap DpSram2ParmMap; /* 7E00 - 7FFF */ + u8 DpScratch[DP_SCRATCH_SIZE]; /* 8000 - 8FFF */ + u8 DpSram3[DP_SRAM3_SIZE]; /* 9000 - FFFF */ +}; + +#define DpControl DpCtrlProm.DpCtrl.DpCtl +#define DpSetInt DpCtrlProm.DpCtrl.DpIntSet +#define DpResetTpu DpCtrlProm.DpCtrl.DpTpuReset +#define DpResetInt DpCtrlProm.DpCtrl.DpIntReset + +#define DpSlx DpCtrlProm.DpProm.DpSlxCode +#define DpRevision DpCtrlProm.DpProm.DpRev +#define DpUnique DpCtrlProm.DpProm.DpUniq +#define DpYear DpCtrlProm.DpProm.DpJahre +#define DpWeek DpCtrlProm.DpProm.DpWoche +#define DpSignature DpCtrlProm.DpProm.DpSiggy + +#define DpParmMapR DpSram2ParmMap.DpParmMapS.DpParmMapAd +#define DpSram2 DpSram2ParmMap.DpSramMem + +#endif diff --git a/drivers/staging/generic_serial/rio/cirrus.h b/drivers/staging/generic_serial/rio/cirrus.h new file mode 100644 index 000000000000..5ab51679caa2 --- /dev/null +++ b/drivers/staging/generic_serial/rio/cirrus.h @@ -0,0 +1,210 @@ +/**************************************************************************** + ******* ******* + ******* CIRRUS.H ******* + ******* ******* + **************************************************************************** + + Author : Jeremy Rolls + Date : 3 Aug 1990 + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- + + ***************************************************************************/ + +#ifndef _cirrus_h +#define _cirrus_h 1 + +/* Bit fields for particular registers shared with driver */ + +/* COR1 - driver and RTA */ +#define RIOC_COR1_ODD 0x80 /* Odd parity */ +#define RIOC_COR1_EVEN 0x00 /* Even parity */ +#define RIOC_COR1_NOP 0x00 /* No parity */ +#define RIOC_COR1_FORCE 0x20 /* Force parity */ +#define RIOC_COR1_NORMAL 0x40 /* With parity */ +#define RIOC_COR1_1STOP 0x00 /* 1 stop bit */ +#define RIOC_COR1_15STOP 0x04 /* 1.5 stop bits */ +#define RIOC_COR1_2STOP 0x08 /* 2 stop bits */ +#define RIOC_COR1_5BITS 0x00 /* 5 data bits */ +#define RIOC_COR1_6BITS 0x01 /* 6 data bits */ +#define RIOC_COR1_7BITS 0x02 /* 7 data bits */ +#define RIOC_COR1_8BITS 0x03 /* 8 data bits */ + +#define RIOC_COR1_HOST 0xef /* Safe host bits */ + +/* RTA only */ +#define RIOC_COR1_CINPCK 0x00 /* Check parity of received characters */ +#define RIOC_COR1_CNINPCK 0x10 /* Don't check parity */ + +/* COR2 bits for both RTA and driver use */ +#define RIOC_COR2_IXANY 0x80 /* IXANY - any character is XON */ +#define RIOC_COR2_IXON 0x40 /* IXON - enable tx soft flowcontrol */ +#define RIOC_COR2_RTSFLOW 0x02 /* Enable tx hardware flow control */ + +/* Additional driver bits */ +#define RIOC_COR2_HUPCL 0x20 /* Hang up on close */ +#define RIOC_COR2_CTSFLOW 0x04 /* Enable rx hardware flow control */ +#define RIOC_COR2_IXOFF 0x01 /* Enable rx software flow control */ +#define RIOC_COR2_DTRFLOW 0x08 /* Enable tx hardware flow control */ + +/* RTA use only */ +#define RIOC_COR2_ETC 0x20 /* Embedded transmit options */ +#define RIOC_COR2_LOCAL 0x10 /* Local loopback mode */ +#define RIOC_COR2_REMOTE 0x08 /* Remote loopback mode */ +#define RIOC_COR2_HOST 0xc2 /* Safe host bits */ + +/* COR3 - RTA use only */ +#define RIOC_COR3_SCDRNG 0x80 /* Enable special char detect for range */ +#define RIOC_COR3_SCD34 0x40 /* Special character detect for SCHR's 3 + 4 */ +#define RIOC_COR3_FCT 0x20 /* Flow control transparency */ +#define RIOC_COR3_SCD12 0x10 /* Special character detect for SCHR's 1 + 2 */ +#define RIOC_COR3_FIFO12 0x0c /* 12 chars for receive FIFO threshold */ +#define RIOC_COR3_FIFO10 0x0a /* 10 chars for receive FIFO threshold */ +#define RIOC_COR3_FIFO8 0x08 /* 8 chars for receive FIFO threshold */ +#define RIOC_COR3_FIFO6 0x06 /* 6 chars for receive FIFO threshold */ + +#define RIOC_COR3_THRESHOLD RIOC_COR3_FIFO8 /* MUST BE LESS THAN MCOR_THRESHOLD */ + +#define RIOC_COR3_DEFAULT (RIOC_COR3_FCT | RIOC_COR3_THRESHOLD) + /* Default bits for COR3 */ + +/* COR4 driver and RTA use */ +#define RIOC_COR4_IGNCR 0x80 /* Throw away CR's on input */ +#define RIOC_COR4_ICRNL 0x40 /* Map CR -> NL on input */ +#define RIOC_COR4_INLCR 0x20 /* Map NL -> CR on input */ +#define RIOC_COR4_IGNBRK 0x10 /* Ignore Break */ +#define RIOC_COR4_NBRKINT 0x08 /* No interrupt on break (-BRKINT) */ +#define RIOC_COR4_RAISEMOD 0x01 /* Raise modem output lines on non-zero baud */ + + +/* COR4 driver only */ +#define RIOC_COR4_IGNPAR 0x04 /* IGNPAR (ignore characters with errors) */ +#define RIOC_COR4_PARMRK 0x02 /* PARMRK */ + +#define RIOC_COR4_HOST 0xf8 /* Safe host bits */ + +/* COR4 RTA only */ +#define RIOC_COR4_CIGNPAR 0x02 /* Thrown away bad characters */ +#define RIOC_COR4_CPARMRK 0x04 /* PARMRK characters */ +#define RIOC_COR4_CNPARMRK 0x03 /* Don't PARMRK */ + +/* COR5 driver and RTA use */ +#define RIOC_COR5_ISTRIP 0x80 /* Strip input chars to 7 bits */ +#define RIOC_COR5_LNE 0x40 /* Enable LNEXT processing */ +#define RIOC_COR5_CMOE 0x20 /* Match good and errored characters */ +#define RIOC_COR5_ONLCR 0x02 /* NL -> CR NL on output */ +#define RIOC_COR5_OCRNL 0x01 /* CR -> NL on output */ + +/* +** Spare bits - these are not used in the CIRRUS registers, so we use +** them to set various other features. +*/ +/* +** tstop and tbusy indication +*/ +#define RIOC_COR5_TSTATE_ON 0x08 /* Turn on monitoring of tbusy and tstop */ +#define RIOC_COR5_TSTATE_OFF 0x04 /* Turn off monitoring of tbusy and tstop */ +/* +** TAB3 +*/ +#define RIOC_COR5_TAB3 0x10 /* TAB3 mode */ + +#define RIOC_COR5_HOST 0xc3 /* Safe host bits */ + +/* CCSR */ +#define RIOC_CCSR_TXFLOFF 0x04 /* Tx is xoffed */ + +/* MSVR1 */ +/* NB. DTR / CD swapped from Cirrus spec as the pins are also reversed on the + RTA. This is because otherwise DCD would get lost on the 1 parallel / 3 + serial option. +*/ +#define RIOC_MSVR1_CD 0x80 /* CD (DSR on Cirrus) */ +#define RIOC_MSVR1_RTS 0x40 /* RTS (CTS on Cirrus) */ +#define RIOC_MSVR1_RI 0x20 /* RI */ +#define RIOC_MSVR1_DTR 0x10 /* DTR (CD on Cirrus) */ +#define RIOC_MSVR1_CTS 0x01 /* CTS output pin (RTS on Cirrus) */ +/* Next two used to indicate state of tbusy and tstop to driver */ +#define RIOC_MSVR1_TSTOP 0x08 /* Set if port flow controlled */ +#define RIOC_MSVR1_TEMPTY 0x04 /* Set if port tx buffer empty */ + +#define RIOC_MSVR1_HOST 0xf3 /* The bits the host wants */ + +/* Defines for the subscripts of a CONFIG packet */ +#define RIOC_CONFIG_COR1 1 /* Option register 1 */ +#define RIOC_CONFIG_COR2 2 /* Option register 2 */ +#define RIOC_CONFIG_COR4 3 /* Option register 4 */ +#define RIOC_CONFIG_COR5 4 /* Option register 5 */ +#define RIOC_CONFIG_TXXON 5 /* Tx XON character */ +#define RIOC_CONFIG_TXXOFF 6 /* Tx XOFF character */ +#define RIOC_CONFIG_RXXON 7 /* Rx XON character */ +#define RIOC_CONFIG_RXXOFF 8 /* Rx XOFF character */ +#define RIOC_CONFIG_LNEXT 9 /* LNEXT character */ +#define RIOC_CONFIG_TXBAUD 10 /* Tx baud rate */ +#define RIOC_CONFIG_RXBAUD 11 /* Rx baud rate */ + +#define RIOC_PRE_EMPTIVE 0x80 /* Pre-emptive bit in command field */ + +/* Packet types going from Host to remote - with the exception of OPEN, MOPEN, + CONFIG, SBREAK and MEMDUMP the remaining bytes of the data array will not + be used +*/ +#define RIOC_OPEN 0x00 /* Open a port */ +#define RIOC_CONFIG 0x01 /* Configure a port */ +#define RIOC_MOPEN 0x02 /* Modem open (block for DCD) */ +#define RIOC_CLOSE 0x03 /* Close a port */ +#define RIOC_WFLUSH (0x04 | RIOC_PRE_EMPTIVE) /* Write flush */ +#define RIOC_RFLUSH (0x05 | RIOC_PRE_EMPTIVE) /* Read flush */ +#define RIOC_RESUME (0x06 | RIOC_PRE_EMPTIVE) /* Resume if xoffed */ +#define RIOC_SBREAK 0x07 /* Start break */ +#define RIOC_EBREAK 0x08 /* End break */ +#define RIOC_SUSPEND (0x09 | RIOC_PRE_EMPTIVE) /* Susp op (behave as tho xoffed) */ +#define RIOC_FCLOSE (0x0a | RIOC_PRE_EMPTIVE) /* Force close */ +#define RIOC_XPRINT 0x0b /* Xprint packet */ +#define RIOC_MBIS (0x0c | RIOC_PRE_EMPTIVE) /* Set modem lines */ +#define RIOC_MBIC (0x0d | RIOC_PRE_EMPTIVE) /* Clear modem lines */ +#define RIOC_MSET (0x0e | RIOC_PRE_EMPTIVE) /* Set modem lines */ +#define RIOC_PCLOSE 0x0f /* Pseudo close - Leaves rx/tx enabled */ +#define RIOC_MGET (0x10 | RIOC_PRE_EMPTIVE) /* Force update of modem status */ +#define RIOC_MEMDUMP (0x11 | RIOC_PRE_EMPTIVE) /* Send back mem from addr supplied */ +#define RIOC_READ_REGISTER (0x12 | RIOC_PRE_EMPTIVE) /* Read CD1400 register (debug) */ + +/* "Command" packets going from remote to host COMPLETE and MODEM_STATUS + use data[4] / data[3] to indicate current state and modem status respectively +*/ + +#define RIOC_COMPLETE (0x20 | RIOC_PRE_EMPTIVE) + /* Command complete */ +#define RIOC_BREAK_RECEIVED (0x21 | RIOC_PRE_EMPTIVE) + /* Break received */ +#define RIOC_MODEM_STATUS (0x22 | RIOC_PRE_EMPTIVE) + /* Change in modem status */ + +/* "Command" packet that could go either way - handshake wake-up */ +#define RIOC_HANDSHAKE (0x23 | RIOC_PRE_EMPTIVE) + /* Wake-up to HOST / RTA */ + +#endif diff --git a/drivers/staging/generic_serial/rio/cmdblk.h b/drivers/staging/generic_serial/rio/cmdblk.h new file mode 100644 index 000000000000..9ed4f861675a --- /dev/null +++ b/drivers/staging/generic_serial/rio/cmdblk.h @@ -0,0 +1,53 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : cmdblk.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:09 +** Retrieved : 11/6/98 11:34:20 +** +** ident @(#)cmdblk.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_cmdblk_h__ +#define __rio_cmdblk_h__ + +/* +** the structure of a command block, used to queue commands destined for +** a rup. +*/ + +struct CmdBlk { + struct CmdBlk *NextP; /* Pointer to next command block */ + struct PKT Packet; /* A packet, to copy to the rup */ + /* The func to call to check if OK */ + int (*PreFuncP) (unsigned long, struct CmdBlk *); + int PreArg; /* The arg for the func */ + /* The func to call when completed */ + int (*PostFuncP) (unsigned long, struct CmdBlk *); + int PostArg; /* The arg for the func */ +}; + +#define NUM_RIO_CMD_BLKS (3 * (MAX_RUP * 4 + LINKS_PER_UNIT * 4)) +#endif diff --git a/drivers/staging/generic_serial/rio/cmdpkt.h b/drivers/staging/generic_serial/rio/cmdpkt.h new file mode 100644 index 000000000000..c1e7a2798070 --- /dev/null +++ b/drivers/staging/generic_serial/rio/cmdpkt.h @@ -0,0 +1,177 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : cmdpkt.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:09 +** Retrieved : 11/6/98 11:34:20 +** +** ident @(#)cmdpkt.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ +#ifndef __rio_cmdpkt_h__ +#define __rio_cmdpkt_h__ + +/* +** overlays for the data area of a packet. Used in both directions +** (to build a packet to send, and to interpret a packet that arrives) +** and is very inconvenient for MIPS, so they appear as two separate +** structures - those used for modifying/reading packets on the card +** and those for modifying/reading packets in real memory, which have an _M +** suffix. +*/ + +#define RTA_BOOT_DATA_SIZE (PKT_MAX_DATA_LEN-2) + +/* +** The boot information packet looks like this: +** This structure overlays a PktCmd->CmdData structure, and so starts +** at Data[2] in the actual pkt! +*/ +struct BootSequence { + u16 NumPackets; + u16 LoadBase; + u16 CodeSize; +}; + +#define BOOT_SEQUENCE_LEN 8 + +struct SamTop { + u8 Unit; + u8 Link; +}; + +struct CmdHdr { + u8 PcCommand; + union { + u8 PcPhbNum; + u8 PcLinkNum; + u8 PcIDNum; + } U0; +}; + + +struct PktCmd { + union { + struct { + struct CmdHdr CmdHdr; + struct BootSequence PcBootSequence; + } S1; + struct { + u16 PcSequence; + u8 PcBootData[RTA_BOOT_DATA_SIZE]; + } S2; + struct { + u16 __crud__; + u8 PcUniqNum[4]; /* this is really a uint. */ + u8 PcModuleTypes; /* what modules are fitted */ + } S3; + struct { + struct CmdHdr CmdHdr; + u8 __undefined__; + u8 PcModemStatus; + u8 PcPortStatus; + u8 PcSubCommand; /* commands like mem or register dump */ + u16 PcSubAddr; /* Address for command */ + u8 PcSubData[64]; /* Date area for command */ + } S4; + struct { + struct CmdHdr CmdHdr; + u8 PcCommandText[1]; + u8 __crud__[20]; + u8 PcIDNum2; /* It had to go somewhere! */ + } S5; + struct { + struct CmdHdr CmdHdr; + struct SamTop Topology[LINKS_PER_UNIT]; + } S6; + } U1; +}; + +struct PktCmd_M { + union { + struct { + struct { + u8 PcCommand; + union { + u8 PcPhbNum; + u8 PcLinkNum; + u8 PcIDNum; + } U0; + } CmdHdr; + struct { + u16 NumPackets; + u16 LoadBase; + u16 CodeSize; + } PcBootSequence; + } S1; + struct { + u16 PcSequence; + u8 PcBootData[RTA_BOOT_DATA_SIZE]; + } S2; + struct { + u16 __crud__; + u8 PcUniqNum[4]; /* this is really a uint. */ + u8 PcModuleTypes; /* what modules are fitted */ + } S3; + struct { + u16 __cmd_hdr__; + u8 __undefined__; + u8 PcModemStatus; + u8 PcPortStatus; + u8 PcSubCommand; + u16 PcSubAddr; + u8 PcSubData[64]; + } S4; + struct { + u16 __cmd_hdr__; + u8 PcCommandText[1]; + u8 __crud__[20]; + u8 PcIDNum2; /* Tacked on end */ + } S5; + struct { + u16 __cmd_hdr__; + struct Top Topology[LINKS_PER_UNIT]; + } S6; + } U1; +}; + +#define Command U1.S1.CmdHdr.PcCommand +#define PhbNum U1.S1.CmdHdr.U0.PcPhbNum +#define IDNum U1.S1.CmdHdr.U0.PcIDNum +#define IDNum2 U1.S5.PcIDNum2 +#define LinkNum U1.S1.CmdHdr.U0.PcLinkNum +#define Sequence U1.S2.PcSequence +#define BootData U1.S2.PcBootData +#define BootSequence U1.S1.PcBootSequence +#define UniqNum U1.S3.PcUniqNum +#define ModemStatus U1.S4.PcModemStatus +#define PortStatus U1.S4.PcPortStatus +#define SubCommand U1.S4.PcSubCommand +#define SubAddr U1.S4.PcSubAddr +#define SubData U1.S4.PcSubData +#define CommandText U1.S5.PcCommandText +#define RouteTopology U1.S6.Topology +#define ModuleTypes U1.S3.PcModuleTypes + +#endif diff --git a/drivers/staging/generic_serial/rio/daemon.h b/drivers/staging/generic_serial/rio/daemon.h new file mode 100644 index 000000000000..4af90323fd00 --- /dev/null +++ b/drivers/staging/generic_serial/rio/daemon.h @@ -0,0 +1,307 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : daemon.h +** SID : 1.3 +** Last Modified : 11/6/98 11:34:09 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)daemon.h 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_daemon_h__ +#define __rio_daemon_h__ + + +/* +** structures used on /dev/rio +*/ + +struct Error { + unsigned int Error; + unsigned int Entry; + unsigned int Other; +}; + +struct DownLoad { + char __user *DataP; + unsigned int Count; + unsigned int ProductCode; +}; + +/* +** A few constants.... +*/ +#ifndef MAX_VERSION_LEN +#define MAX_VERSION_LEN 256 +#endif + +#ifndef MAX_XP_CTRL_LEN +#define MAX_XP_CTRL_LEN 16 /* ALSO IN PORT.H */ +#endif + +struct PortSetup { + unsigned int From; /* Set/Clear XP & IXANY Control from this port.... */ + unsigned int To; /* .... to this port */ + unsigned int XpCps; /* at this speed */ + char XpOn[MAX_XP_CTRL_LEN]; /* this is the start string */ + char XpOff[MAX_XP_CTRL_LEN]; /* this is the stop string */ + u8 IxAny; /* enable/disable IXANY */ + u8 IxOn; /* enable/disable IXON */ + u8 Lock; /* lock port params */ + u8 Store; /* store params across closes */ + u8 Drain; /* close only when drained */ +}; + +struct LpbReq { + unsigned int Host; + unsigned int Link; + struct LPB __user *LpbP; +}; + +struct RupReq { + unsigned int HostNum; + unsigned int RupNum; + struct RUP __user *RupP; +}; + +struct PortReq { + unsigned int SysPort; + struct Port __user *PortP; +}; + +struct StreamInfo { + unsigned int SysPort; + int RQueue; + int WQueue; +}; + +struct HostReq { + unsigned int HostNum; + struct Host __user *HostP; +}; + +struct HostDpRam { + unsigned int HostNum; + struct DpRam __user *DpRamP; +}; + +struct DebugCtrl { + unsigned int SysPort; + unsigned int Debug; + unsigned int Wait; +}; + +struct MapInfo { + unsigned int FirstPort; /* 8 ports, starting from this (tty) number */ + unsigned int RtaUnique; /* reside on this RTA (unique number) */ +}; + +struct MapIn { + unsigned int NumEntries; /* How many port sets are we mapping? */ + struct MapInfo *MapInfoP; /* Pointer to (user space) info */ +}; + +struct SendPack { + unsigned int PortNum; + unsigned char Len; + unsigned char Data[PKT_MAX_DATA_LEN]; +}; + +struct SpecialRupCmd { + struct PKT Packet; + unsigned short Host; + unsigned short RupNum; +}; + +struct IdentifyRta { + unsigned long RtaUnique; + u8 ID; +}; + +struct KillNeighbour { + unsigned long UniqueNum; + u8 Link; +}; + +struct rioVersion { + char version[MAX_VERSION_LEN]; + char relid[MAX_VERSION_LEN]; + int buildLevel; + char buildDate[MAX_VERSION_LEN]; +}; + + +/* +** RIOC commands are for the daemon type operations +** +** 09.12.1998 ARG - ESIL 0776 part fix +** Definition for 'RIOC' also appears in rioioctl.h, so we'd better do a +** #ifndef here first. +** rioioctl.h also now has #define 'RIO_QUICK_CHECK' as this ioctl is now +** allowed to be used by customers. +*/ +#ifndef RIOC +#define RIOC ('R'<<8)|('i'<<16)|('o'<<24) +#endif + +/* +** Boot stuff +*/ +#define RIO_GET_TABLE (RIOC | 100) +#define RIO_PUT_TABLE (RIOC | 101) +#define RIO_ASSIGN_RTA (RIOC | 102) +#define RIO_DELETE_RTA (RIOC | 103) +#define RIO_HOST_FOAD (RIOC | 104) +#define RIO_QUICK_CHECK (RIOC | 105) +#define RIO_SIGNALS_ON (RIOC | 106) +#define RIO_SIGNALS_OFF (RIOC | 107) +#define RIO_CHANGE_NAME (RIOC | 108) +#define RIO_DOWNLOAD (RIOC | 109) +#define RIO_GET_LOG (RIOC | 110) +#define RIO_SETUP_PORTS (RIOC | 111) +#define RIO_ALL_MODEM (RIOC | 112) + +/* +** card state, debug stuff +*/ +#define RIO_NUM_HOSTS (RIOC | 120) +#define RIO_HOST_LPB (RIOC | 121) +#define RIO_HOST_RUP (RIOC | 122) +#define RIO_HOST_PORT (RIOC | 123) +#define RIO_PARMS (RIOC | 124) +#define RIO_HOST_REQ (RIOC | 125) +#define RIO_READ_CONFIG (RIOC | 126) +#define RIO_SET_CONFIG (RIOC | 127) +#define RIO_VERSID (RIOC | 128) +#define RIO_FLAGS (RIOC | 129) +#define RIO_SETDEBUG (RIOC | 130) +#define RIO_GETDEBUG (RIOC | 131) +#define RIO_READ_LEVELS (RIOC | 132) +#define RIO_SET_FAST_BUS (RIOC | 133) +#define RIO_SET_SLOW_BUS (RIOC | 134) +#define RIO_SET_BYTE_MODE (RIOC | 135) +#define RIO_SET_WORD_MODE (RIOC | 136) +#define RIO_STREAM_INFO (RIOC | 137) +#define RIO_START_POLLER (RIOC | 138) +#define RIO_STOP_POLLER (RIOC | 139) +#define RIO_LAST_ERROR (RIOC | 140) +#define RIO_TICK (RIOC | 141) +#define RIO_TOCK (RIOC | 241) /* I did this on purpose, you know. */ +#define RIO_SEND_PACKET (RIOC | 142) +#define RIO_SET_BUSY (RIOC | 143) +#define SPECIAL_RUP_CMD (RIOC | 144) +#define RIO_FOAD_RTA (RIOC | 145) +#define RIO_ZOMBIE_RTA (RIOC | 146) +#define RIO_IDENTIFY_RTA (RIOC | 147) +#define RIO_KILL_NEIGHBOUR (RIOC | 148) +#define RIO_DEBUG_MEM (RIOC | 149) +/* +** 150 - 167 used..... See below +*/ +#define RIO_GET_PORT_SETUP (RIOC | 168) +#define RIO_RESUME (RIOC | 169) +#define RIO_MESG (RIOC | 170) +#define RIO_NO_MESG (RIOC | 171) +#define RIO_WHAT_MESG (RIOC | 172) +#define RIO_HOST_DPRAM (RIOC | 173) +#define RIO_MAP_B50_TO_50 (RIOC | 174) +#define RIO_MAP_B50_TO_57600 (RIOC | 175) +#define RIO_MAP_B110_TO_110 (RIOC | 176) +#define RIO_MAP_B110_TO_115200 (RIOC | 177) +#define RIO_GET_PORT_PARAMS (RIOC | 178) +#define RIO_SET_PORT_PARAMS (RIOC | 179) +#define RIO_GET_PORT_TTY (RIOC | 180) +#define RIO_SET_PORT_TTY (RIOC | 181) +#define RIO_SYSLOG_ONLY (RIOC | 182) +#define RIO_SYSLOG_CONS (RIOC | 183) +#define RIO_CONS_ONLY (RIOC | 184) +#define RIO_BLOCK_OPENS (RIOC | 185) + +/* +** 02.03.1999 ARG - ESIL 0820 fix : +** RIOBootMode is no longer use by the driver, so these ioctls +** are now obsolete : +** +#define RIO_GET_BOOT_MODE (RIOC | 186) +#define RIO_SET_BOOT_MODE (RIOC | 187) +** +*/ + +#define RIO_MEM_DUMP (RIOC | 189) +#define RIO_READ_REGISTER (RIOC | 190) +#define RIO_GET_MODTYPE (RIOC | 191) +#define RIO_SET_TIMER (RIOC | 192) +#define RIO_READ_CHECK (RIOC | 196) +#define RIO_WAITING_FOR_RESTART (RIOC | 197) +#define RIO_BIND_RTA (RIOC | 198) +#define RIO_GET_BINDINGS (RIOC | 199) +#define RIO_PUT_BINDINGS (RIOC | 200) + +#define RIO_MAKE_DEV (RIOC | 201) +#define RIO_MINOR (RIOC | 202) + +#define RIO_IDENTIFY_DRIVER (RIOC | 203) +#define RIO_DISPLAY_HOST_CFG (RIOC | 204) + + +/* +** MAKE_DEV / MINOR stuff +*/ +#define RIO_DEV_DIRECT 0x0000 +#define RIO_DEV_MODEM 0x0200 +#define RIO_DEV_XPRINT 0x0400 +#define RIO_DEV_MASK 0x0600 + +/* +** port management, xprint stuff +*/ +#define rIOCN(N) (RIOC|(N)) +#define rIOCR(N,T) (RIOC|(N)) +#define rIOCW(N,T) (RIOC|(N)) + +#define RIO_GET_XP_ON rIOCR(150,char[16]) /* start xprint string */ +#define RIO_SET_XP_ON rIOCW(151,char[16]) +#define RIO_GET_XP_OFF rIOCR(152,char[16]) /* finish xprint string */ +#define RIO_SET_XP_OFF rIOCW(153,char[16]) +#define RIO_GET_XP_CPS rIOCR(154,int) /* xprint CPS */ +#define RIO_SET_XP_CPS rIOCW(155,int) +#define RIO_GET_IXANY rIOCR(156,int) /* ixany allowed? */ +#define RIO_SET_IXANY rIOCW(157,int) +#define RIO_SET_IXANY_ON rIOCN(158) /* allow ixany */ +#define RIO_SET_IXANY_OFF rIOCN(159) /* disallow ixany */ +#define RIO_GET_MODEM rIOCR(160,int) /* port is modem/direct line? */ +#define RIO_SET_MODEM rIOCW(161,int) +#define RIO_SET_MODEM_ON rIOCN(162) /* port is a modem */ +#define RIO_SET_MODEM_OFF rIOCN(163) /* port is direct */ +#define RIO_GET_IXON rIOCR(164,int) /* ixon allowed? */ +#define RIO_SET_IXON rIOCW(165,int) +#define RIO_SET_IXON_ON rIOCN(166) /* allow ixon */ +#define RIO_SET_IXON_OFF rIOCN(167) /* disallow ixon */ + +#define RIO_GET_SIVIEW ((('s')<<8) | 106) /* backwards compatible with SI */ + +#define RIO_IOCTL_UNKNOWN -2 + +#endif diff --git a/drivers/staging/generic_serial/rio/errors.h b/drivers/staging/generic_serial/rio/errors.h new file mode 100644 index 000000000000..bdb05234090a --- /dev/null +++ b/drivers/staging/generic_serial/rio/errors.h @@ -0,0 +1,98 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : errors.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:10 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)errors.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_errors_h__ +#define __rio_errors_h__ + +/* +** error codes +*/ + +#define NOTHING_WRONG_AT_ALL 0 +#define BAD_CHARACTER_IN_NAME 1 +#define TABLE_ENTRY_ISNT_PROPERLY_NULL 2 +#define UNKNOWN_HOST_NUMBER 3 +#define ZERO_RTA_ID 4 +#define BAD_RTA_ID 5 +#define DUPLICATED_RTA_ID 6 +#define DUPLICATE_UNIQUE_NUMBER 7 +#define BAD_TTY_NUMBER 8 +#define TTY_NUMBER_IN_USE 9 +#define NAME_USED_TWICE 10 +#define HOST_ID_NOT_ZERO 11 +#define BOOT_IN_PROGRESS 12 +#define COPYIN_FAILED 13 +#define HOST_FILE_TOO_LARGE 14 +#define COPYOUT_FAILED 15 +#define NOT_SUPER_USER 16 +#define RIO_ALREADY_POLLING 17 + +#define ID_NUMBER_OUT_OF_RANGE 18 +#define PORT_NUMBER_OUT_OF_RANGE 19 +#define HOST_NUMBER_OUT_OF_RANGE 20 +#define RUP_NUMBER_OUT_OF_RANGE 21 +#define TTY_NUMBER_OUT_OF_RANGE 22 +#define LINK_NUMBER_OUT_OF_RANGE 23 + +#define HOST_NOT_RUNNING 24 +#define IOCTL_COMMAND_UNKNOWN 25 +#define RIO_SYSTEM_HALTED 26 +#define WAIT_FOR_DRAIN_BROKEN 27 +#define PORT_NOT_MAPPED_INTO_SYSTEM 28 +#define EXCLUSIVE_USE_SET 29 +#define WAIT_FOR_NOT_CLOSING_BROKEN 30 +#define WAIT_FOR_PORT_TO_OPEN_BROKEN 31 +#define WAIT_FOR_CARRIER_BROKEN 32 +#define WAIT_FOR_NOT_IN_USE_BROKEN 33 +#define WAIT_FOR_CAN_ADD_COMMAND_BROKEN 34 +#define WAIT_FOR_ADD_COMMAND_BROKEN 35 +#define WAIT_FOR_NOT_PARAM_BROKEN 36 +#define WAIT_FOR_RETRY_BROKEN 37 +#define HOST_HAS_ALREADY_BEEN_BOOTED 38 +#define UNIT_IS_IN_USE 39 +#define COULDNT_FIND_ENTRY 40 +#define RTA_UNIQUE_NUMBER_ZERO 41 +#define CLOSE_COMMAND_FAILED 42 +#define WAIT_FOR_CLOSE_BROKEN 43 +#define CPS_VALUE_OUT_OF_RANGE 44 +#define ID_ALREADY_IN_USE 45 +#define SIGNALS_ALREADY_SET 46 +#define NOT_RECEIVING_PROCESS 47 +#define RTA_NUMBER_WRONG 48 +#define NO_SUCH_PRODUCT 49 +#define HOST_SYSPORT_BAD 50 +#define ID_NOT_TENTATIVE 51 +#define XPRINT_CPS_OUT_OF_RANGE 52 +#define NOT_ENOUGH_CORE_FOR_PCI_COPY 53 + + +#endif /* __rio_errors_h__ */ diff --git a/drivers/staging/generic_serial/rio/func.h b/drivers/staging/generic_serial/rio/func.h new file mode 100644 index 000000000000..078d44f85e45 --- /dev/null +++ b/drivers/staging/generic_serial/rio/func.h @@ -0,0 +1,143 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : func.h +** SID : 1.3 +** Last Modified : 11/6/98 11:34:10 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)func.h 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __func_h_def +#define __func_h_def + +#include + +/* rioboot.c */ +int RIOBootCodeRTA(struct rio_info *, struct DownLoad *); +int RIOBootCodeHOST(struct rio_info *, struct DownLoad *); +int RIOBootCodeUNKNOWN(struct rio_info *, struct DownLoad *); +void msec_timeout(struct Host *); +int RIOBootRup(struct rio_info *, unsigned int, struct Host *, struct PKT __iomem *); +int RIOBootOk(struct rio_info *, struct Host *, unsigned long); +int RIORtaBound(struct rio_info *, unsigned int); +void rio_fill_host_slot(int, int, unsigned int, struct Host *); + +/* riocmd.c */ +int RIOFoadRta(struct Host *, struct Map *); +int RIOZombieRta(struct Host *, struct Map *); +int RIOCommandRta(struct rio_info *, unsigned long, int (*func) (struct Host *, struct Map *)); +int RIOIdentifyRta(struct rio_info *, void __user *); +int RIOKillNeighbour(struct rio_info *, void __user *); +int RIOSuspendBootRta(struct Host *, int, int); +int RIOFoadWakeup(struct rio_info *); +struct CmdBlk *RIOGetCmdBlk(void); +void RIOFreeCmdBlk(struct CmdBlk *); +int RIOQueueCmdBlk(struct Host *, unsigned int, struct CmdBlk *); +void RIOPollHostCommands(struct rio_info *, struct Host *); +int RIOWFlushMark(unsigned long, struct CmdBlk *); +int RIORFlushEnable(unsigned long, struct CmdBlk *); +int RIOUnUse(unsigned long, struct CmdBlk *); + +/* rioctrl.c */ +int riocontrol(struct rio_info *, dev_t, int, unsigned long, int); + +int RIOPreemptiveCmd(struct rio_info *, struct Port *, unsigned char); + +/* rioinit.c */ +void rioinit(struct rio_info *, struct RioHostInfo *); +void RIOInitHosts(struct rio_info *, struct RioHostInfo *); +void RIOISAinit(struct rio_info *, int); +int RIODoAT(struct rio_info *, int, int); +caddr_t RIOCheckForATCard(int); +int RIOAssignAT(struct rio_info *, int, void __iomem *, int); +int RIOBoardTest(unsigned long, void __iomem *, unsigned char, int); +void RIOAllocDataStructs(struct rio_info *); +void RIOSetupDataStructs(struct rio_info *); +int RIODefaultName(struct rio_info *, struct Host *, unsigned int); +struct rioVersion *RIOVersid(void); +void RIOHostReset(unsigned int, struct DpRam __iomem *, unsigned int); + +/* riointr.c */ +void RIOTxEnable(char *); +void RIOServiceHost(struct rio_info *, struct Host *); +int riotproc(struct rio_info *, struct ttystatics *, int, int); + +/* rioparam.c */ +int RIOParam(struct Port *, int, int, int); +int RIODelay(struct Port *PortP, int); +int RIODelay_ni(struct Port *PortP, int); +void ms_timeout(struct Port *); +int can_add_transmit(struct PKT __iomem **, struct Port *); +void add_transmit(struct Port *); +void put_free_end(struct Host *, struct PKT __iomem *); +int can_remove_receive(struct PKT __iomem **, struct Port *); +void remove_receive(struct Port *); + +/* rioroute.c */ +int RIORouteRup(struct rio_info *, unsigned int, struct Host *, struct PKT __iomem *); +void RIOFixPhbs(struct rio_info *, struct Host *, unsigned int); +unsigned int GetUnitType(unsigned int); +int RIOSetChange(struct rio_info *); +int RIOFindFreeID(struct rio_info *, struct Host *, unsigned int *, unsigned int *); + + +/* riotty.c */ + +int riotopen(struct tty_struct *tty, struct file *filp); +int riotclose(void *ptr); +int riotioctl(struct rio_info *, struct tty_struct *, int, caddr_t); +void ttyseth(struct Port *, struct ttystatics *, struct old_sgttyb *sg); + +/* riotable.c */ +int RIONewTable(struct rio_info *); +int RIOApel(struct rio_info *); +int RIODeleteRta(struct rio_info *, struct Map *); +int RIOAssignRta(struct rio_info *, struct Map *); +int RIOReMapPorts(struct rio_info *, struct Host *, struct Map *); +int RIOChangeName(struct rio_info *, struct Map *); + +#if 0 +/* riodrvr.c */ +struct rio_info *rio_install(struct RioHostInfo *); +int rio_uninstall(struct rio_info *); +int rio_open(struct rio_info *, int, struct file *); +int rio_close(struct rio_info *, struct file *); +int rio_read(struct rio_info *, struct file *, char *, int); +int rio_write(struct rio_info *, struct file *f, char *, int); +int rio_ioctl(struct rio_info *, struct file *, int, char *); +int rio_select(struct rio_info *, struct file *f, int, struct sel *); +int rio_intr(char *); +int rio_isr_thread(char *); +struct rio_info *rio_info_store(int cmd, struct rio_info *p); +#endif + +extern void rio_copy_to_card(void *from, void __iomem *to, int len); +extern int rio_minor(struct tty_struct *tty); +extern int rio_ismodem(struct tty_struct *tty); + +extern void rio_start_card_running(struct Host *HostP); + +#endif /* __func_h_def */ diff --git a/drivers/staging/generic_serial/rio/host.h b/drivers/staging/generic_serial/rio/host.h new file mode 100644 index 000000000000..78f24540c224 --- /dev/null +++ b/drivers/staging/generic_serial/rio/host.h @@ -0,0 +1,123 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : host.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:10 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)host.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_host_h__ +#define __rio_host_h__ + +/* +** the host structure - one per host card in the system. +*/ + +#define MAX_EXTRA_UNITS 64 + +/* +** Host data structure. This is used for the software equiv. of +** the host. +*/ +struct Host { + struct pci_dev *pdev; + unsigned char Type; /* RIO_EISA, RIO_MCA, ... */ + unsigned char Ivec; /* POLLED or ivec number */ + unsigned char Mode; /* Control stuff */ + unsigned char Slot; /* Slot */ + void __iomem *Caddr; /* KV address of DPRAM */ + struct DpRam __iomem *CardP; /* KV address of DPRAM, with overlay */ + unsigned long PaddrP; /* Phys. address of DPRAM */ + char Name[MAX_NAME_LEN]; /* The name of the host */ + unsigned int UniqueNum; /* host unique number */ + spinlock_t HostLock; /* Lock structure for MPX */ + unsigned int WorkToBeDone; /* set to true each interrupt */ + unsigned int InIntr; /* Being serviced? */ + unsigned int IntSrvDone; /* host's interrupt has been serviced */ + void (*Copy) (void *, void __iomem *, int); /* copy func */ + struct timer_list timer; + /* + ** I M P O R T A N T ! + ** + ** The rest of this data structure is cleared to zero after + ** a RIO_HOST_FOAD command. + */ + + unsigned long Flags; /* Whats going down */ +#define RC_WAITING 0 +#define RC_STARTUP 1 +#define RC_RUNNING 2 +#define RC_STUFFED 3 +#define RC_READY 7 +#define RUN_STATE 7 +/* +** Boot mode applies to the way in which hosts in this system will +** boot RTAs +*/ +#define RC_BOOT_ALL 0x8 /* Boot all RTAs attached */ +#define RC_BOOT_OWN 0x10 /* Only boot RTAs bound to this system */ +#define RC_BOOT_NONE 0x20 /* Don't boot any RTAs (slave mode) */ + + struct Top Topology[LINKS_PER_UNIT]; /* one per link */ + struct Map Mapping[MAX_RUP]; /* Mappings for host */ + struct PHB __iomem *PhbP; /* Pointer to the PHB array */ + unsigned short __iomem *PhbNumP; /* Ptr to Number of PHB's */ + struct LPB __iomem *LinkStrP; /* Link Structure Array */ + struct RUP __iomem *RupP; /* Sixteen real rups here */ + struct PARM_MAP __iomem *ParmMapP; /* points to the parmmap */ + unsigned int ExtraUnits[MAX_EXTRA_UNITS]; /* unknown things */ + unsigned int NumExtraBooted; /* how many of the above */ + /* + ** Twenty logical rups. + ** The first sixteen are the real Rup entries (above), the last four + ** are the link RUPs. + */ + struct UnixRup UnixRups[MAX_RUP + LINKS_PER_UNIT]; + int timeout_id; /* For calling 100 ms delays */ + int timeout_sem; /* For calling 100 ms delays */ + unsigned long locks; /* long req'd for set_bit --RR */ + char ____end_marker____; +}; +#define Control CardP->DpControl +#define SetInt CardP->DpSetInt +#define ResetTpu CardP->DpResetTpu +#define ResetInt CardP->DpResetInt +#define Signature CardP->DpSignature +#define Sram1 CardP->DpSram1 +#define Sram2 CardP->DpSram2 +#define Sram3 CardP->DpSram3 +#define Scratch CardP->DpScratch +#define __ParmMapR CardP->DpParmMapR +#define SLX CardP->DpSlx +#define Revision CardP->DpRevision +#define Unique CardP->DpUnique +#define Year CardP->DpYear +#define Week CardP->DpWeek + +#define RIO_DUMBPARM 0x0860 /* what not to expect */ + +#endif diff --git a/drivers/staging/generic_serial/rio/link.h b/drivers/staging/generic_serial/rio/link.h new file mode 100644 index 000000000000..f3bf11a04d41 --- /dev/null +++ b/drivers/staging/generic_serial/rio/link.h @@ -0,0 +1,96 @@ +/**************************************************************************** + ******* ******* + ******* L I N K + ******* ******* + **************************************************************************** + + Author : Ian Nandhra / Jeremy Rolls + Date : + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- + + ***************************************************************************/ + +#ifndef _link_h +#define _link_h 1 + +/************************************************* + * Define the Link Status stuff + ************************************************/ +/* Boot request stuff */ +#define BOOT_REQUEST ((ushort) 0) /* Request for a boot */ +#define BOOT_ABORT ((ushort) 1) /* Abort a boot */ +#define BOOT_SEQUENCE ((ushort) 2) /* Packet with the number of packets + and load address */ +#define BOOT_COMPLETED ((ushort) 3) /* Boot completed */ + + +struct LPB { + u16 link_number; /* Link Number */ + u16 in_ch; /* Link In Channel */ + u16 out_ch; /* Link Out Channel */ + u8 attached_serial[4]; /* Attached serial number */ + u8 attached_host_serial[4]; + /* Serial number of Host who + booted the other end */ + u16 descheduled; /* Currently Descheduled */ + u16 state; /* Current state */ + u16 send_poll; /* Send a Poll Packet */ + u16 ltt_p; /* Process Descriptor */ + u16 lrt_p; /* Process Descriptor */ + u16 lrt_status; /* Current lrt status */ + u16 ltt_status; /* Current ltt status */ + u16 timeout; /* Timeout value */ + u16 topology; /* Topology bits */ + u16 mon_ltt; + u16 mon_lrt; + u16 WaitNoBoot; /* Secs to hold off booting */ + u16 add_packet_list; /* Add packets to here */ + u16 remove_packet_list; /* Send packets from here */ + + u16 lrt_fail_chan; /* Lrt's failure channel */ + u16 ltt_fail_chan; /* Ltt's failure channel */ + + /* RUP structure for HOST to driver communications */ + struct RUP rup; + struct RUP link_rup; /* RUP for the link (POLL, + topology etc.) */ + u16 attached_link; /* Number of attached link */ + u16 csum_errors; /* csum errors */ + u16 num_disconnects; /* number of disconnects */ + u16 num_sync_rcvd; /* # sync's received */ + u16 num_sync_rqst; /* # sync requests */ + u16 num_tx; /* Num pkts sent */ + u16 num_rx; /* Num pkts received */ + u16 module_attached; /* Module tpyes of attached */ + u16 led_timeout; /* LED timeout */ + u16 first_port; /* First port to service */ + u16 last_port; /* Last port to service */ +}; + +#endif + +/*********** end of file ***********/ diff --git a/drivers/staging/generic_serial/rio/linux_compat.h b/drivers/staging/generic_serial/rio/linux_compat.h new file mode 100644 index 000000000000..34c0d2899ef1 --- /dev/null +++ b/drivers/staging/generic_serial/rio/linux_compat.h @@ -0,0 +1,77 @@ +/* + * (C) 2000 R.E.Wolff@BitWizard.nl + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include + + +#define DEBUG_ALL + +struct ttystatics { + struct termios tm; +}; + +extern int rio_debug; + +#define RIO_DEBUG_INIT 0x000001 +#define RIO_DEBUG_BOOT 0x000002 +#define RIO_DEBUG_CMD 0x000004 +#define RIO_DEBUG_CTRL 0x000008 +#define RIO_DEBUG_INTR 0x000010 +#define RIO_DEBUG_PARAM 0x000020 +#define RIO_DEBUG_ROUTE 0x000040 +#define RIO_DEBUG_TABLE 0x000080 +#define RIO_DEBUG_TTY 0x000100 +#define RIO_DEBUG_FLOW 0x000200 +#define RIO_DEBUG_MODEMSIGNALS 0x000400 +#define RIO_DEBUG_PROBE 0x000800 +#define RIO_DEBUG_CLEANUP 0x001000 +#define RIO_DEBUG_IFLOW 0x002000 +#define RIO_DEBUG_PFE 0x004000 +#define RIO_DEBUG_REC 0x008000 +#define RIO_DEBUG_SPINLOCK 0x010000 +#define RIO_DEBUG_DELAY 0x020000 +#define RIO_DEBUG_MOD_COUNT 0x040000 + + +/* Copied over from riowinif.h . This is ugly. The winif file declares +also much other stuff which is incompatible with the headers from +the older driver. The older driver includes "brates.h" which shadows +the definitions from Linux, and is incompatible... */ + +/* RxBaud and TxBaud definitions... */ +#define RIO_B0 0x00 /* RTS / DTR signals dropped */ +#define RIO_B50 0x01 /* 50 baud */ +#define RIO_B75 0x02 /* 75 baud */ +#define RIO_B110 0x03 /* 110 baud */ +#define RIO_B134 0x04 /* 134.5 baud */ +#define RIO_B150 0x05 /* 150 baud */ +#define RIO_B200 0x06 /* 200 baud */ +#define RIO_B300 0x07 /* 300 baud */ +#define RIO_B600 0x08 /* 600 baud */ +#define RIO_B1200 0x09 /* 1200 baud */ +#define RIO_B1800 0x0A /* 1800 baud */ +#define RIO_B2400 0x0B /* 2400 baud */ +#define RIO_B4800 0x0C /* 4800 baud */ +#define RIO_B9600 0x0D /* 9600 baud */ +#define RIO_B19200 0x0E /* 19200 baud */ +#define RIO_B38400 0x0F /* 38400 baud */ +#define RIO_B56000 0x10 /* 56000 baud */ +#define RIO_B57600 0x11 /* 57600 baud */ +#define RIO_B64000 0x12 /* 64000 baud */ +#define RIO_B115200 0x13 /* 115200 baud */ +#define RIO_B2000 0x14 /* 2000 baud */ diff --git a/drivers/staging/generic_serial/rio/map.h b/drivers/staging/generic_serial/rio/map.h new file mode 100644 index 000000000000..8366978578c1 --- /dev/null +++ b/drivers/staging/generic_serial/rio/map.h @@ -0,0 +1,98 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : map.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:11 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)map.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_map_h__ +#define __rio_map_h__ + +/* +** mapping structure passed to and from the config.rio program to +** determine the current topology of the world +*/ + +#define MAX_MAP_ENTRY 17 +#define TOTAL_MAP_ENTRIES (MAX_MAP_ENTRY*RIO_SLOTS) +#define MAX_NAME_LEN 32 + +struct Map { + unsigned int HostUniqueNum; /* Supporting hosts unique number */ + unsigned int RtaUniqueNum; /* Unique number */ + /* + ** The next two IDs must be swapped on big-endian architectures + ** when using a v2.04 /etc/rio/config with a v3.00 driver (when + ** upgrading for example). + */ + unsigned short ID; /* ID used in the subnet */ + unsigned short ID2; /* ID of 2nd block of 8 for 16 port */ + unsigned long Flags; /* Booted, ID Given, Disconnected */ + unsigned long SysPort; /* First tty mapped to this port */ + struct Top Topology[LINKS_PER_UNIT]; /* ID connected to each link */ + char Name[MAX_NAME_LEN]; /* Cute name by which RTA is known */ +}; + +/* +** Flag values: +*/ +#define RTA_BOOTED 0x00000001 +#define RTA_NEWBOOT 0x00000010 +#define MSG_DONE 0x00000020 +#define RTA_INTERCONNECT 0x00000040 +#define RTA16_SECOND_SLOT 0x00000080 +#define BEEN_HERE 0x00000100 +#define SLOT_TENTATIVE 0x40000000 +#define SLOT_IN_USE 0x80000000 + +/* +** HostUniqueNum is the unique number from the host card that this RTA +** is to be connected to. +** RtaUniqueNum is the unique number of the RTA concerned. It will be ZERO +** if the slot in the table is unused. If it is the same as the HostUniqueNum +** then this slot represents a host card. +** Flags contains current boot/route state info +** SysPort is a value in the range 0-504, being the number of the first tty +** on this RTA. Each RTA supports 8 ports. The SysPort value must be modulo 8. +** SysPort 0-127 correspond to /dev/ttyr001 to /dev/ttyr128, with minor +** numbers 0-127. SysPort 128-255 correspond to /dev/ttyr129 to /dev/ttyr256, +** again with minor numbers 0-127, and so on for SysPorts 256-383 and 384-511 +** ID will be in the range 0-16 for a `known' RTA. ID will be 0xFFFF for an +** unused slot/unknown ID etc. +** The Topology array contains the ID of the unit connected to each of the +** four links on this unit. The entry will be 0xFFFF if NOTHING is connected +** to the link, or will be 0xFF00 if an UNKNOWN unit is connected to the link. +** The Name field is a null-terminated string, upto 31 characters, containing +** the 'cute' name that the sysadmin/users know the RTA by. It is permissible +** for this string to contain any character in the range \040 to \176 inclusive. +** In particular, ctrl sequences and DEL (0x7F, \177) are not allowed. The +** special character '%' IS allowable, and needs no special action. +** +*/ + +#endif diff --git a/drivers/staging/generic_serial/rio/param.h b/drivers/staging/generic_serial/rio/param.h new file mode 100644 index 000000000000..7e9b6283e8aa --- /dev/null +++ b/drivers/staging/generic_serial/rio/param.h @@ -0,0 +1,55 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : param.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:12 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)param.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_param_h__ +#define __rio_param_h__ + +/* +** the param command block, as used in OPEN and PARAM calls. +*/ + +struct phb_param { + u8 Cmd; /* It is very important that these line up */ + u8 Cor1; /* with what is expected at the other end. */ + u8 Cor2; /* to confirm that you've got it right, */ + u8 Cor4; /* check with cirrus/cirrus.h */ + u8 Cor5; + u8 TxXon; /* Transmit X-On character */ + u8 TxXoff; /* Transmit X-Off character */ + u8 RxXon; /* Receive X-On character */ + u8 RxXoff; /* Receive X-Off character */ + u8 LNext; /* Literal-next character */ + u8 TxBaud; /* Transmit baudrate */ + u8 RxBaud; /* Receive baudrate */ +}; + +#endif diff --git a/drivers/staging/generic_serial/rio/parmmap.h b/drivers/staging/generic_serial/rio/parmmap.h new file mode 100644 index 000000000000..acc8fa439df5 --- /dev/null +++ b/drivers/staging/generic_serial/rio/parmmap.h @@ -0,0 +1,81 @@ +/**************************************************************************** + ******* ******* + ******* H O S T M E M O R Y M A P + ******* ******* + **************************************************************************** + + Author : Ian Nandhra / Jeremy Rolls + Date : + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- +6/4/1991 jonb Made changes to accommodate Mips R3230 bus + ***************************************************************************/ + +#ifndef _parmap_h +#define _parmap_h + +typedef struct PARM_MAP PARM_MAP; + +struct PARM_MAP { + u16 phb_ptr; /* Pointer to the PHB array */ + u16 phb_num_ptr; /* Ptr to Number of PHB's */ + u16 free_list; /* Free List pointer */ + u16 free_list_end; /* Free List End pointer */ + u16 q_free_list_ptr; /* Ptr to Q_BUF variable */ + u16 unit_id_ptr; /* Unit Id */ + u16 link_str_ptr; /* Link Structure Array */ + u16 bootloader_1; /* 1st Stage Boot Loader */ + u16 bootloader_2; /* 2nd Stage Boot Loader */ + u16 port_route_map_ptr; /* Port Route Map */ + u16 route_ptr; /* Unit Route Map */ + u16 map_present; /* Route Map present */ + s16 pkt_num; /* Total number of packets */ + s16 q_num; /* Total number of Q packets */ + u16 buffers_per_port; /* Number of buffers per port */ + u16 heap_size; /* Initial size of heap */ + u16 heap_left; /* Current Heap left */ + u16 error; /* Error code */ + u16 tx_max; /* Max number of tx pkts per phb */ + u16 rx_max; /* Max number of rx pkts per phb */ + u16 rx_limit; /* For high / low watermarks */ + s16 links; /* Links to use */ + s16 timer; /* Interrupts per second */ + u16 rups; /* Pointer to the RUPs */ + u16 max_phb; /* Mostly for debugging */ + u16 living; /* Just increments!! */ + u16 init_done; /* Initialisation over */ + u16 booting_link; + u16 idle_count; /* Idle time counter */ + u16 busy_count; /* Busy counter */ + u16 idle_control; /* Control Idle Process */ + u16 tx_intr; /* TX interrupt pending */ + u16 rx_intr; /* RX interrupt pending */ + u16 rup_intr; /* RUP interrupt pending */ +}; + +#endif + +/*********** end of file ***********/ diff --git a/drivers/staging/generic_serial/rio/pci.h b/drivers/staging/generic_serial/rio/pci.h new file mode 100644 index 000000000000..6032f9135956 --- /dev/null +++ b/drivers/staging/generic_serial/rio/pci.h @@ -0,0 +1,72 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : pci.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:12 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)pci.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_pci_h__ +#define __rio_pci_h__ + +/* +** PCI stuff +*/ + +#define PCITpFastClock 0x80 +#define PCITpSlowClock 0x00 +#define PCITpFastLinks 0x40 +#define PCITpSlowLinks 0x00 +#define PCITpIntEnable 0x04 +#define PCITpIntDisable 0x00 +#define PCITpBusEnable 0x02 +#define PCITpBusDisable 0x00 +#define PCITpBootFromRam 0x01 +#define PCITpBootFromLink 0x00 + +#define RIO_PCI_VENDOR 0x11CB +#define RIO_PCI_DEVICE 0x8000 +#define RIO_PCI_BASE_CLASS 0x02 +#define RIO_PCI_SUB_CLASS 0x80 +#define RIO_PCI_PROG_IFACE 0x00 + +#define RIO_PCI_RID 0x0008 +#define RIO_PCI_BADR0 0x0010 +#define RIO_PCI_INTLN 0x003C +#define RIO_PCI_INTPIN 0x003D + +#define RIO_PCI_MEM_SIZE 65536 + +#define RIO_PCI_TURBO_TP 0x80 +#define RIO_PCI_FAST_LINKS 0x40 +#define RIO_PCI_INT_ENABLE 0x04 +#define RIO_PCI_TP_BUS_ENABLE 0x02 +#define RIO_PCI_BOOT_FROM_RAM 0x01 + +#define RIO_PCI_DEFAULT_MODE 0x05 + +#endif /* __rio_pci_h__ */ diff --git a/drivers/staging/generic_serial/rio/phb.h b/drivers/staging/generic_serial/rio/phb.h new file mode 100644 index 000000000000..a4c48ae4e365 --- /dev/null +++ b/drivers/staging/generic_serial/rio/phb.h @@ -0,0 +1,142 @@ +/**************************************************************************** + ******* ******* + ******* P H B H E A D E R ******* + ******* ******* + **************************************************************************** + + Author : Ian Nandhra, Jeremy Rolls + Date : + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- + + ***************************************************************************/ + +#ifndef _phb_h +#define _phb_h 1 + +/************************************************* + * Handshake asserted. Deasserted by the LTT(s) + ************************************************/ +#define PHB_HANDSHAKE_SET ((ushort) 0x001) /* Set by LRT */ + +#define PHB_HANDSHAKE_RESET ((ushort) 0x002) /* Set by ISR / driver */ + +#define PHB_HANDSHAKE_FLAGS (PHB_HANDSHAKE_RESET | PHB_HANDSHAKE_SET) + /* Reset by ltt */ + + +/************************************************* + * Maximum number of PHB's + ************************************************/ +#define MAX_PHB ((ushort) 128) /* range 0-127 */ + +/************************************************* + * Defines for the mode fields + ************************************************/ +#define TXPKT_INCOMPLETE 0x0001 /* Previous tx packet not completed */ +#define TXINTR_ENABLED 0x0002 /* Tx interrupt is enabled */ +#define TX_TAB3 0x0004 /* TAB3 mode */ +#define TX_OCRNL 0x0008 /* OCRNL mode */ +#define TX_ONLCR 0x0010 /* ONLCR mode */ +#define TX_SENDSPACES 0x0020 /* Send n spaces command needs + completing */ +#define TX_SENDNULL 0x0040 /* Escaping NULL needs completing */ +#define TX_SENDLF 0x0080 /* LF -> CR LF needs completing */ +#define TX_PARALLELBUG 0x0100 /* CD1400 LF -> CR LF bug on parallel + port */ +#define TX_HANGOVER (TX_SENDSPACES | TX_SENDLF | TX_SENDNULL) +#define TX_DTRFLOW 0x0200 /* DTR tx flow control */ +#define TX_DTRFLOWED 0x0400 /* DTR is low - don't allow more data + into the FIFO */ +#define TX_DATAINFIFO 0x0800 /* There is data in the FIFO */ +#define TX_BUSY 0x1000 /* Data in FIFO, shift or holding regs */ + +#define RX_SPARE 0x0001 /* SPARE */ +#define RXINTR_ENABLED 0x0002 /* Rx interrupt enabled */ +#define RX_ICRNL 0x0008 /* ICRNL mode */ +#define RX_INLCR 0x0010 /* INLCR mode */ +#define RX_IGNCR 0x0020 /* IGNCR mode */ +#define RX_CTSFLOW 0x0040 /* CTSFLOW enabled */ +#define RX_IXOFF 0x0080 /* IXOFF enabled */ +#define RX_CTSFLOWED 0x0100 /* CTSFLOW and CTS dropped */ +#define RX_IXOFFED 0x0200 /* IXOFF and xoff sent */ +#define RX_BUFFERED 0x0400 /* Try and pass on complete packets */ + +#define PORT_ISOPEN 0x0001 /* Port open? */ +#define PORT_HUPCL 0x0002 /* Hangup on close? */ +#define PORT_MOPENPEND 0x0004 /* Modem open pending */ +#define PORT_ISPARALLEL 0x0008 /* Parallel port */ +#define PORT_BREAK 0x0010 /* Port on break */ +#define PORT_STATUSPEND 0x0020 /* Status packet pending */ +#define PORT_BREAKPEND 0x0040 /* Break packet pending */ +#define PORT_MODEMPEND 0x0080 /* Modem status packet pending */ +#define PORT_PARALLELBUG 0x0100 /* CD1400 LF -> CR LF bug on parallel + port */ +#define PORT_FULLMODEM 0x0200 /* Full modem signals */ +#define PORT_RJ45 0x0400 /* RJ45 connector - no RI signal */ +#define PORT_RESTRICTED 0x0600 /* Restricted connector - no RI / DTR */ + +#define PORT_MODEMBITS 0x0600 /* Mask for modem fields */ + +#define PORT_WCLOSE 0x0800 /* Waiting for close */ +#define PORT_HANDSHAKEFIX 0x1000 /* Port has H/W flow control fix */ +#define PORT_WASPCLOSED 0x2000 /* Port closed with PCLOSE */ +#define DUMPMODE 0x4000 /* Dump RTA mem */ +#define READ_REG 0x8000 /* Read CD1400 register */ + + + +/************************************************************************** + * PHB Structure + * A few words. + * + * Normally Packets are added to the end of the list and removed from + * the start. The pointer tx_add points to a SPACE to put a Packet. + * The pointer tx_remove points to the next Packet to remove + *************************************************************************/ + +struct PHB { + u8 source; + u8 handshake; + u8 status; + u16 timeout; /* Maximum of 1.9 seconds */ + u8 link; /* Send down this link */ + u8 destination; + u16 tx_start; + u16 tx_end; + u16 tx_add; + u16 tx_remove; + + u16 rx_start; + u16 rx_end; + u16 rx_add; + u16 rx_remove; + +}; + +#endif + +/*********** end of file ***********/ diff --git a/drivers/staging/generic_serial/rio/pkt.h b/drivers/staging/generic_serial/rio/pkt.h new file mode 100644 index 000000000000..a9458164f02f --- /dev/null +++ b/drivers/staging/generic_serial/rio/pkt.h @@ -0,0 +1,77 @@ +/**************************************************************************** + ******* ******* + ******* P A C K E T H E A D E R F I L E + ******* ******* + **************************************************************************** + + Author : Ian Nandhra / Jeremy Rolls + Date : + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- + + ***************************************************************************/ + +#ifndef _pkt_h +#define _pkt_h 1 + +#define PKT_CMD_BIT ((ushort) 0x080) +#define PKT_CMD_DATA ((ushort) 0x080) + +#define PKT_ACK ((ushort) 0x040) + +#define PKT_TGL ((ushort) 0x020) + +#define PKT_LEN_MASK ((ushort) 0x07f) + +#define DATA_WNDW ((ushort) 0x10) +#define PKT_TTL_MASK ((ushort) 0x0f) + +#define PKT_MAX_DATA_LEN 72 + +#define PKT_LENGTH sizeof(struct PKT) +#define SYNC_PKT_LENGTH (PKT_LENGTH + 4) + +#define CONTROL_PKT_LEN_MASK PKT_LEN_MASK +#define CONTROL_PKT_CMD_BIT PKT_CMD_BIT +#define CONTROL_PKT_ACK (PKT_ACK << 8) +#define CONTROL_PKT_TGL (PKT_TGL << 8) +#define CONTROL_PKT_TTL_MASK (PKT_TTL_MASK << 8) +#define CONTROL_DATA_WNDW (DATA_WNDW << 8) + +struct PKT { + u8 dest_unit; /* Destination Unit Id */ + u8 dest_port; /* Destination POrt */ + u8 src_unit; /* Source Unit Id */ + u8 src_port; /* Source POrt */ + u8 len; + u8 control; + u8 data[PKT_MAX_DATA_LEN]; + /* Actual data :-) */ + u16 csum; /* C-SUM */ +}; +#endif + +/*********** end of file ***********/ diff --git a/drivers/staging/generic_serial/rio/port.h b/drivers/staging/generic_serial/rio/port.h new file mode 100644 index 000000000000..49cf6d15ee54 --- /dev/null +++ b/drivers/staging/generic_serial/rio/port.h @@ -0,0 +1,179 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : port.h +** SID : 1.3 +** Last Modified : 11/6/98 11:34:12 +** Retrieved : 11/6/98 11:34:21 +** +** ident @(#)port.h 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_port_h__ +#define __rio_port_h__ + +/* +** Port data structure +*/ +struct Port { + struct gs_port gs; + int PortNum; /* RIO port no., 0-511 */ + struct Host *HostP; + void __iomem *Caddr; + unsigned short HostPort; /* Port number on host card */ + unsigned char RupNum; /* Number of RUP for port */ + unsigned char ID2; /* Second ID of RTA for port */ + unsigned long State; /* FLAGS for open & xopen */ +#define RIO_LOPEN 0x00001 /* Local open */ +#define RIO_MOPEN 0x00002 /* Modem open */ +#define RIO_WOPEN 0x00004 /* Waiting for open */ +#define RIO_CLOSING 0x00008 /* The port is being close */ +#define RIO_XPBUSY 0x00010 /* Transparent printer busy */ +#define RIO_BREAKING 0x00020 /* Break in progress */ +#define RIO_DIRECT 0x00040 /* Doing Direct output */ +#define RIO_EXCLUSIVE 0x00080 /* Stream open for exclusive use */ +#define RIO_NDELAY 0x00100 /* Stream is open FNDELAY */ +#define RIO_CARR_ON 0x00200 /* Stream has carrier present */ +#define RIO_XPWANTR 0x00400 /* Stream wanted by Xprint */ +#define RIO_RBLK 0x00800 /* Stream is read-blocked */ +#define RIO_BUSY 0x01000 /* Stream is BUSY for write */ +#define RIO_TIMEOUT 0x02000 /* Stream timeout in progress */ +#define RIO_TXSTOP 0x04000 /* Stream output is stopped */ +#define RIO_WAITFLUSH 0x08000 /* Stream waiting for flush */ +#define RIO_DYNOROD 0x10000 /* Drain failed */ +#define RIO_DELETED 0x20000 /* RTA has been deleted */ +#define RIO_ISSCANCODE 0x40000 /* This line is in scancode mode */ +#define RIO_USING_EUC 0x100000 /* Using extended Unix chars */ +#define RIO_CAN_COOK 0x200000 /* This line can do cooking */ +#define RIO_TRIAD_MODE 0x400000 /* Enable TRIAD special ops. */ +#define RIO_TRIAD_BLOCK 0x800000 /* Next read will block */ +#define RIO_TRIAD_FUNC 0x1000000 /* Seen a function key coming in */ +#define RIO_THROTTLE_RX 0x2000000 /* RX needs to be throttled. */ + + unsigned long Config; /* FLAGS for NOREAD.... */ +#define RIO_NOREAD 0x0001 /* Are not allowed to read port */ +#define RIO_NOWRITE 0x0002 /* Are not allowed to write port */ +#define RIO_NOXPRINT 0x0004 /* Are not allowed to xprint port */ +#define RIO_NOMASK 0x0007 /* All not allowed things */ +#define RIO_IXANY 0x0008 /* Port is allowed ixany */ +#define RIO_MODEM 0x0010 /* Stream is a modem device */ +#define RIO_IXON 0x0020 /* Port is allowed ixon */ +#define RIO_WAITDRAIN 0x0040 /* Wait for port to completely drain */ +#define RIO_MAP_50_TO_50 0x0080 /* Map 50 baud to 50 baud */ +#define RIO_MAP_110_TO_110 0x0100 /* Map 110 baud to 110 baud */ + +/* +** 15.10.1998 ARG - ESIL 0761 prt fix +** As LynxOS does not appear to support Hardware Flow Control ..... +** Define our own flow control flags in 'Config'. +*/ +#define RIO_CTSFLOW 0x0200 /* RIO's own CTSFLOW flag */ +#define RIO_RTSFLOW 0x0400 /* RIO's own RTSFLOW flag */ + + + struct PHB __iomem *PhbP; /* pointer to PHB for port */ + u16 __iomem *TxAdd; /* Add packets here */ + u16 __iomem *TxStart; /* Start of add array */ + u16 __iomem *TxEnd; /* End of add array */ + u16 __iomem *RxRemove; /* Remove packets here */ + u16 __iomem *RxStart; /* Start of remove array */ + u16 __iomem *RxEnd; /* End of remove array */ + unsigned int RtaUniqueNum; /* Unique number of RTA */ + unsigned short PortState; /* status of port */ + unsigned short ModemState; /* status of modem lines */ + unsigned long ModemLines; /* Modem bits sent to RTA */ + unsigned char CookMode; /* who expands CR/LF? */ + unsigned char ParamSem; /* Prevent write during param */ + unsigned char Mapped; /* if port mapped onto host */ + unsigned char SecondBlock; /* if port belongs to 2nd block + of 16 port RTA */ + unsigned char InUse; /* how many pre-emptive cmds */ + unsigned char Lock; /* if params locked */ + unsigned char Store; /* if params stored across closes */ + unsigned char FirstOpen; /* TRUE if first time port opened */ + unsigned char FlushCmdBodge; /* if doing a (non)flush */ + unsigned char MagicFlags; /* require intr processing */ +#define MAGIC_FLUSH 0x01 /* mirror of WflushFlag */ +#define MAGIC_REBOOT 0x02 /* RTA re-booted, re-open ports */ +#define MORE_OUTPUT_EYGOR 0x04 /* riotproc failed to empty clists */ + unsigned char WflushFlag; /* 1 How many WFLUSHs active */ +/* +** Transparent print stuff +*/ + struct Xprint { +#ifndef MAX_XP_CTRL_LEN +#define MAX_XP_CTRL_LEN 16 /* ALSO IN DAEMON.H */ +#endif + unsigned int XpCps; + char XpOn[MAX_XP_CTRL_LEN]; + char XpOff[MAX_XP_CTRL_LEN]; + unsigned short XpLen; /* strlen(XpOn)+strlen(XpOff) */ + unsigned char XpActive; + unsigned char XpLastTickOk; /* TRUE if we can process */ +#define XP_OPEN 00001 +#define XP_RUNABLE 00002 + struct ttystatics *XttyP; + } Xprint; + unsigned char RxDataStart; + unsigned char Cor2Copy; /* copy of COR2 */ + char *Name; /* points to the Rta's name */ + char *TxRingBuffer; + unsigned short TxBufferIn; /* New data arrives here */ + unsigned short TxBufferOut; /* Intr removes data here */ + unsigned short OldTxBufferOut; /* Indicates if draining */ + int TimeoutId; /* Timeout ID */ + unsigned int Debug; + unsigned char WaitUntilBooted; /* True if open should block */ + unsigned int statsGather; /* True if gathering stats */ + unsigned long txchars; /* Chars transmitted */ + unsigned long rxchars; /* Chars received */ + unsigned long opens; /* port open count */ + unsigned long closes; /* port close count */ + unsigned long ioctls; /* ioctl count */ + unsigned char LastRxTgl; /* Last state of rx toggle bit */ + spinlock_t portSem; /* Lock using this sem */ + int MonitorTstate; /* Monitoring ? */ + int timeout_id; /* For calling 100 ms delays */ + int timeout_sem; /* For calling 100 ms delays */ + int firstOpen; /* First time open ? */ + char *p; /* save the global struc here .. */ +}; + +struct ModuleInfo { + char *Name; + unsigned int Flags[4]; /* one per port on a module */ +}; + +/* +** This struct is required because trying to grab an entire Port structure +** runs into problems with differing struct sizes between driver and config. +*/ +struct PortParams { + unsigned int Port; + unsigned long Config; + unsigned long State; + struct ttystatics *TtyP; +}; + +#endif diff --git a/drivers/staging/generic_serial/rio/protsts.h b/drivers/staging/generic_serial/rio/protsts.h new file mode 100644 index 000000000000..8ab79401d3ee --- /dev/null +++ b/drivers/staging/generic_serial/rio/protsts.h @@ -0,0 +1,110 @@ +/**************************************************************************** + ******* ******* + ******* P R O T O C O L S T A T U S S T R U C T U R E ******* + ******* ******* + **************************************************************************** + + Author : Ian Nandhra / Jeremy Rolls + Date : + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- + + ***************************************************************************/ + +#ifndef _protsts_h +#define _protsts_h 1 + +/************************************************* + * ACK bit. Last Packet received OK. Set by + * rxpkt to indicate that the Packet has been + * received OK and that the LTT must set the ACK + * bit in the next outward bound Packet + * and re-set by LTT's after xmit. + * + * Gets shoved into rx_status + ************************************************/ +#define PHB_RX_LAST_PKT_ACKED ((ushort) 0x080) + +/******************************************************* + * The Rx TOGGLE bit. + * Stuffed into rx_status by RXPKT + ******************************************************/ +#define PHB_RX_DATA_WNDW ((ushort) 0x040) + +/******************************************************* + * The Rx TOGGLE bit. Matches the setting in PKT.H + * Stuffed into rx_status + ******************************************************/ +#define PHB_RX_TGL ((ushort) 0x2000) + + +/************************************************* + * This bit is set by the LRT to indicate that + * an ACK (packet) must be returned. + * + * Gets shoved into tx_status + ************************************************/ +#define PHB_TX_SEND_PKT_ACK ((ushort) 0x08) + +/************************************************* + * Set by LTT to indicate that an ACK is required + *************************************************/ +#define PHB_TX_ACK_RQRD ((ushort) 0x01) + + +/******************************************************* + * The Tx TOGGLE bit. + * Stuffed into tx_status by RXPKT from the PKT WndW + * field. Looked by the LTT when the NEXT Packet + * is going to be sent. + ******************************************************/ +#define PHB_TX_DATA_WNDW ((ushort) 0x04) + + +/******************************************************* + * The Tx TOGGLE bit. Matches the setting in PKT.H + * Stuffed into tx_status + ******************************************************/ +#define PHB_TX_TGL ((ushort) 0x02) + +/******************************************************* + * Request intr bit. Set when the queue has gone quiet + * and the PHB has requested an interrupt. + ******************************************************/ +#define PHB_TX_INTR ((ushort) 0x100) + +/******************************************************* + * SET if the PHB cannot send any more data down the + * Link + ******************************************************/ +#define PHB_TX_HANDSHAKE ((ushort) 0x010) + + +#define RUP_SEND_WNDW ((ushort) 0x08) ; + +#endif + +/*********** end of file ***********/ diff --git a/drivers/staging/generic_serial/rio/rio.h b/drivers/staging/generic_serial/rio/rio.h new file mode 100644 index 000000000000..1bf36223a4e8 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rio.h @@ -0,0 +1,208 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 1998 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rio.h +** SID : 1.3 +** Last Modified : 11/6/98 11:34:13 +** Retrieved : 11/6/98 11:34:22 +** +** ident @(#)rio.h 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_rio_h__ +#define __rio_rio_h__ + +/* +** Maximum numbers of things +*/ +#define RIO_SLOTS 4 /* number of configuration slots */ +#define RIO_HOSTS 4 /* number of hosts that can be found */ +#define PORTS_PER_HOST 128 /* number of ports per host */ +#define LINKS_PER_UNIT 4 /* number of links from a host */ +#define RIO_PORTS (PORTS_PER_HOST * RIO_HOSTS) /* max. no. of ports */ +#define RTAS_PER_HOST (MAX_RUP) /* number of RTAs per host */ +#define PORTS_PER_RTA (PORTS_PER_HOST/RTAS_PER_HOST) /* ports on a rta */ +#define PORTS_PER_MODULE 4 /* number of ports on a plug-in module */ + /* number of modules on an RTA */ +#define MODULES_PER_RTA (PORTS_PER_RTA/PORTS_PER_MODULE) +#define MAX_PRODUCT 16 /* numbr of different product codes */ +#define MAX_MODULE_TYPES 16 /* number of different types of module */ + +#define RIO_CONTROL_DEV 128 /* minor number of host/control device */ +#define RIO_INVALID_MAJOR 0 /* test first host card's major no for validity */ + +/* +** number of RTAs that can be bound to a master +*/ +#define MAX_RTA_BINDINGS (MAX_RUP * RIO_HOSTS) + +/* +** Unit types +*/ +#define PC_RTA16 0x90000000 +#define PC_RTA8 0xe0000000 +#define TYPE_HOST 0 +#define TYPE_RTA8 1 +#define TYPE_RTA16 2 + +/* +** Flag values returned by functions +*/ + +#define RIO_FAIL -1 + +/* +** SysPort value for something that hasn't any ports +*/ +#define NO_PORT 0xFFFFFFFF + +/* +** Unit ID Of all hosts +*/ +#define HOST_ID 0 + +/* +** Break bytes into nybles +*/ +#define LONYBLE(X) ((X) & 0xF) +#define HINYBLE(X) (((X)>>4) & 0xF) + +/* +** Flag values passed into some functions +*/ +#define DONT_SLEEP 0 +#define OK_TO_SLEEP 1 + +#define DONT_PRINT 1 +#define DO_PRINT 0 + +#define PRINT_TO_LOG_CONS 0 +#define PRINT_TO_CONS 1 +#define PRINT_TO_LOG 2 + +/* +** Timeout has trouble with times of less than 3 ticks... +*/ +#define MIN_TIMEOUT 3 + +/* +** Generally useful constants +*/ + +#define HUNDRED_MS ((HZ/10)?(HZ/10):1) +#define ONE_MEG 0x100000 +#define SIXTY_FOUR_K 0x10000 + +#define RIO_AT_MEM_SIZE SIXTY_FOUR_K +#define RIO_EISA_MEM_SIZE SIXTY_FOUR_K +#define RIO_MCA_MEM_SIZE SIXTY_FOUR_K + +#define COOK_WELL 0 +#define COOK_MEDIUM 1 +#define COOK_RAW 2 + +/* +** Pointer manipulation stuff +** RIO_PTR takes hostp->Caddr and the offset into the DP RAM area +** and produces a UNIX caddr_t (pointer) to the object +** RIO_OBJ takes hostp->Caddr and a UNIX pointer to an object and +** returns the offset into the DP RAM area. +*/ +#define RIO_PTR(C,O) (((unsigned char __iomem *)(C))+(0xFFFF&(O))) +#define RIO_OFF(C,O) ((unsigned char __iomem *)(O)-(unsigned char __iomem *)(C)) + +/* +** How to convert from various different device number formats: +** DEV is a dev number, as passed to open, close etc - NOT a minor +** number! +**/ + +#define RIO_MODEM_MASK 0x1FF +#define RIO_MODEM_BIT 0x200 +#define RIO_UNMODEM(DEV) (MINOR(DEV) & RIO_MODEM_MASK) +#define RIO_ISMODEM(DEV) (MINOR(DEV) & RIO_MODEM_BIT) +#define RIO_PORT(DEV,FIRST_MAJ) ( (MAJOR(DEV) - FIRST_MAJ) * PORTS_PER_HOST) \ + + MINOR(DEV) +#define CSUM(pkt_ptr) (((u16 *)(pkt_ptr))[0] + ((u16 *)(pkt_ptr))[1] + \ + ((u16 *)(pkt_ptr))[2] + ((u16 *)(pkt_ptr))[3] + \ + ((u16 *)(pkt_ptr))[4] + ((u16 *)(pkt_ptr))[5] + \ + ((u16 *)(pkt_ptr))[6] + ((u16 *)(pkt_ptr))[7] + \ + ((u16 *)(pkt_ptr))[8] + ((u16 *)(pkt_ptr))[9] ) + +#define RIO_LINK_ENABLE 0x80FF /* FF is a hack, mainly for Mips, to */ + /* prevent a really stupid race condition. */ + +#define NOT_INITIALISED 0 +#define INITIALISED 1 + +#define NOT_POLLING 0 +#define POLLING 1 + +#define NOT_CHANGED 0 +#define CHANGED 1 + +#define NOT_INUSE 0 + +#define DISCONNECT 0 +#define CONNECT 1 + +/* ------ Control Codes ------ */ + +#define CONTROL '^' +#define IFOAD ( CONTROL + 1 ) +#define IDENTIFY ( CONTROL + 2 ) +#define ZOMBIE ( CONTROL + 3 ) +#define UFOAD ( CONTROL + 4 ) +#define IWAIT ( CONTROL + 5 ) + +#define IFOAD_MAGIC 0xF0AD /* of course */ +#define ZOMBIE_MAGIC (~0xDEAD) /* not dead -> zombie */ +#define UFOAD_MAGIC 0xD1E /* kill-your-neighbour */ +#define IWAIT_MAGIC 0xB1DE /* Bide your time */ + +/* ------ Error Codes ------ */ + +#define E_NO_ERROR ((ushort) 0) + +/* ------ Free Lists ------ */ + +struct rio_free_list { + u16 next; + u16 prev; +}; + +/* NULL for card side linked lists */ +#define TPNULL ((ushort)(0x8000)) +/* We can add another packet to a transmit queue if the packet pointer pointed + * to by the TxAdd pointer has PKT_IN_USE clear in its address. */ +#define PKT_IN_USE 0x1 + +/* ------ Topology ------ */ + +struct Top { + u8 Unit; + u8 Link; +}; + +#endif /* __rio_h__ */ diff --git a/drivers/staging/generic_serial/rio/rio_linux.c b/drivers/staging/generic_serial/rio/rio_linux.c new file mode 100644 index 000000000000..5e33293d24e3 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rio_linux.c @@ -0,0 +1,1204 @@ + +/* rio_linux.c -- Linux driver for the Specialix RIO series cards. + * + * + * (C) 1999 R.E.Wolff@BitWizard.nl + * + * Specialix pays for the development and support of this driver. + * Please DO contact support@specialix.co.uk if you require + * support. But please read the documentation (rio.txt) first. + * + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be + * useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, + * USA. + * + * */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "linux_compat.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" +#include "param.h" +#include "protsts.h" +#include "rioboard.h" + + +#include "rio_linux.h" + +/* I don't think that this driver can handle more than 512 ports on +one machine. Specialix specifies max 4 boards in one machine. I don't +know why. If you want to try anyway you'll have to increase the number +of boards in rio.h. You'll have to allocate more majors if you need +more than 512 ports.... */ + +#ifndef RIO_NORMAL_MAJOR0 +/* This allows overriding on the compiler commandline, or in a "major.h" + include or something like that */ +#define RIO_NORMAL_MAJOR0 154 +#define RIO_NORMAL_MAJOR1 156 +#endif + +#ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 +#define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 +#endif + +#ifndef RIO_WINDOW_LEN +#define RIO_WINDOW_LEN 0x10000 +#endif + + +/* Configurable options: + (Don't be too sure that it'll work if you toggle them) */ + +/* Am I paranoid or not ? ;-) */ +#undef RIO_PARANOIA_CHECK + + +/* 20 -> 2000 per second. The card should rate-limit interrupts at 1000 + Hz, but it is user configurable. I don't recommend going above 1000 + Hz. The interrupt ratelimit might trigger if the interrupt is + shared with a very active other device. + undef this if you want to disable the check.... +*/ +#define IRQ_RATE_LIMIT 200 + + +/* These constants are derived from SCO Source */ +static DEFINE_MUTEX(rio_fw_mutex); +static struct Conf + RIOConf = { + /* locator */ "RIO Config here", + /* startuptime */ HZ * 2, + /* how long to wait for card to run */ + /* slowcook */ 0, + /* TRUE -> always use line disc. */ + /* intrpolltime */ 1, + /* The frequency of OUR polls */ + /* breakinterval */ 25, + /* x10 mS XXX: units seem to be 1ms not 10! -- REW */ + /* timer */ 10, + /* mS */ + /* RtaLoadBase */ 0x7000, + /* HostLoadBase */ 0x7C00, + /* XpHz */ 5, + /* number of Xprint hits per second */ + /* XpCps */ 120, + /* Xprint characters per second */ + /* XpOn */ "\033d#", + /* start Xprint for a wyse 60 */ + /* XpOff */ "\024", + /* end Xprint for a wyse 60 */ + /* MaxXpCps */ 2000, + /* highest Xprint speed */ + /* MinXpCps */ 10, + /* slowest Xprint speed */ + /* SpinCmds */ 1, + /* non-zero for mega fast boots */ + /* First Addr */ 0x0A0000, + /* First address to look at */ + /* Last Addr */ 0xFF0000, + /* Last address looked at */ + /* BufferSize */ 1024, + /* Bytes per port of buffering */ + /* LowWater */ 256, + /* how much data left before wakeup */ + /* LineLength */ 80, + /* how wide is the console? */ + /* CmdTimeout */ HZ, + /* how long a close command may take */ +}; + + + + +/* Function prototypes */ + +static void rio_disable_tx_interrupts(void *ptr); +static void rio_enable_tx_interrupts(void *ptr); +static void rio_disable_rx_interrupts(void *ptr); +static void rio_enable_rx_interrupts(void *ptr); +static int rio_carrier_raised(struct tty_port *port); +static void rio_shutdown_port(void *ptr); +static int rio_set_real_termios(void *ptr); +static void rio_hungup(void *ptr); +static void rio_close(void *ptr); +static int rio_chars_in_buffer(void *ptr); +static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +static int rio_init_drivers(void); + +static void my_hd(void *addr, int len); + +static struct tty_driver *rio_driver, *rio_driver2; + +/* The name "p" is a bit non-descript. But that's what the rio-lynxos +sources use all over the place. */ +struct rio_info *p; + +int rio_debug; + + +/* You can have the driver poll your card. + - Set rio_poll to 1 to poll every timer tick (10ms on Intel). + This is used when the card cannot use an interrupt for some reason. +*/ +static int rio_poll = 1; + + +/* These are the only open spaces in my computer. Yours may have more + or less.... */ +static int rio_probe_addrs[] = { 0xc0000, 0xd0000, 0xe0000 }; + +#define NR_RIO_ADDRS ARRAY_SIZE(rio_probe_addrs) + + +/* Set the mask to all-ones. This alas, only supports 32 interrupts. + Some architectures may need more. -- Changed to LONG to + support up to 64 bits on 64bit architectures. -- REW 20/06/99 */ +static long rio_irqmask = -1; + +MODULE_AUTHOR("Rogier Wolff , Patrick van de Lageweg "); +MODULE_DESCRIPTION("RIO driver"); +MODULE_LICENSE("GPL"); +module_param(rio_poll, int, 0); +module_param(rio_debug, int, 0644); +module_param(rio_irqmask, long, 0); + +static struct real_driver rio_real_driver = { + rio_disable_tx_interrupts, + rio_enable_tx_interrupts, + rio_disable_rx_interrupts, + rio_enable_rx_interrupts, + rio_shutdown_port, + rio_set_real_termios, + rio_chars_in_buffer, + rio_close, + rio_hungup, + NULL +}; + +/* + * Firmware loader driver specific routines + * + */ + +static const struct file_operations rio_fw_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = rio_fw_ioctl, + .llseek = noop_llseek, +}; + +static struct miscdevice rio_fw_device = { + RIOCTL_MISC_MINOR, "rioctl", &rio_fw_fops +}; + + + + + +#ifdef RIO_PARANOIA_CHECK + +/* This doesn't work. Who's paranoid around here? Not me! */ + +static inline int rio_paranoia_check(struct rio_port const *port, char *name, const char *routine) +{ + + static const char *badmagic = KERN_ERR "rio: Warning: bad rio port magic number for device %s in %s\n"; + static const char *badinfo = KERN_ERR "rio: Warning: null rio port for device %s in %s\n"; + + if (!port) { + printk(badinfo, name, routine); + return 1; + } + if (port->magic != RIO_MAGIC) { + printk(badmagic, name, routine); + return 1; + } + + return 0; +} +#else +#define rio_paranoia_check(a,b,c) 0 +#endif + + +#ifdef DEBUG +static void my_hd(void *ad, int len) +{ + int i, j, ch; + unsigned char *addr = ad; + + for (i = 0; i < len; i += 16) { + rio_dprintk(RIO_DEBUG_PARAM, "%08lx ", (unsigned long) addr + i); + for (j = 0; j < 16; j++) { + rio_dprintk(RIO_DEBUG_PARAM, "%02x %s", addr[j + i], (j == 7) ? " " : ""); + } + for (j = 0; j < 16; j++) { + ch = addr[j + i]; + rio_dprintk(RIO_DEBUG_PARAM, "%c", (ch < 0x20) ? '.' : ((ch > 0x7f) ? '.' : ch)); + } + rio_dprintk(RIO_DEBUG_PARAM, "\n"); + } +} +#else +#define my_hd(ad,len) do{/* nothing*/ } while (0) +#endif + + +/* Delay a number of jiffies, allowing a signal to interrupt */ +int RIODelay(struct Port *PortP, int njiffies) +{ + func_enter(); + + rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies\n", njiffies); + msleep_interruptible(jiffies_to_msecs(njiffies)); + func_exit(); + + if (signal_pending(current)) + return RIO_FAIL; + else + return !RIO_FAIL; +} + + +/* Delay a number of jiffies, disallowing a signal to interrupt */ +int RIODelay_ni(struct Port *PortP, int njiffies) +{ + func_enter(); + + rio_dprintk(RIO_DEBUG_DELAY, "delaying %d jiffies (ni)\n", njiffies); + msleep(jiffies_to_msecs(njiffies)); + func_exit(); + return !RIO_FAIL; +} + +void rio_copy_to_card(void *from, void __iomem *to, int len) +{ + rio_copy_toio(to, from, len); +} + +int rio_minor(struct tty_struct *tty) +{ + return tty->index + ((tty->driver == rio_driver) ? 0 : 256); +} + +static int rio_set_real_termios(void *ptr) +{ + return RIOParam((struct Port *) ptr, RIOC_CONFIG, 1, 1); +} + + +static void rio_reset_interrupt(struct Host *HostP) +{ + func_enter(); + + switch (HostP->Type) { + case RIO_AT: + case RIO_MCA: + case RIO_PCI: + writeb(0xFF, &HostP->ResetInt); + } + + func_exit(); +} + + +static irqreturn_t rio_interrupt(int irq, void *ptr) +{ + struct Host *HostP; + func_enter(); + + HostP = ptr; /* &p->RIOHosts[(long)ptr]; */ + rio_dprintk(RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n", irq, HostP->Ivec); + + /* AAargh! The order in which to do these things is essential and + not trivial. + + - hardware twiddling goes before "recursive". Otherwise when we + poll the card, and a recursive interrupt happens, we won't + ack the card, so it might keep on interrupting us. (especially + level sensitive interrupt systems like PCI). + + - Rate limit goes before hardware twiddling. Otherwise we won't + catch a card that has gone bonkers. + + - The "initialized" test goes after the hardware twiddling. Otherwise + the card will stick us in the interrupt routine again. + + - The initialized test goes before recursive. + */ + + rio_dprintk(RIO_DEBUG_IFLOW, "rio: We've have noticed the interrupt\n"); + if (HostP->Ivec == irq) { + /* Tell the card we've noticed the interrupt. */ + rio_reset_interrupt(HostP); + } + + if ((HostP->Flags & RUN_STATE) != RC_RUNNING) + return IRQ_HANDLED; + + if (test_and_set_bit(RIO_BOARD_INTR_LOCK, &HostP->locks)) { + printk(KERN_ERR "Recursive interrupt! (host %p/irq%d)\n", ptr, HostP->Ivec); + return IRQ_HANDLED; + } + + RIOServiceHost(p, HostP); + + rio_dprintk(RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n", ptr, HostP->Type); + + clear_bit(RIO_BOARD_INTR_LOCK, &HostP->locks); + rio_dprintk(RIO_DEBUG_IFLOW, "rio: exit rio_interrupt (%d/%d)\n", irq, HostP->Ivec); + func_exit(); + return IRQ_HANDLED; +} + + +static void rio_pollfunc(unsigned long data) +{ + func_enter(); + + rio_interrupt(0, &p->RIOHosts[data]); + mod_timer(&p->RIOHosts[data].timer, jiffies + rio_poll); + + func_exit(); +} + + +/* ********************************************************************** * + * Here are the routines that actually * + * interface with the generic_serial driver * + * ********************************************************************** */ + +/* Ehhm. I don't know how to fiddle with interrupts on the Specialix + cards. .... Hmm. Ok I figured it out. You don't. -- REW */ + +static void rio_disable_tx_interrupts(void *ptr) +{ + func_enter(); + + /* port->gs.port.flags &= ~GS_TX_INTEN; */ + + func_exit(); +} + + +static void rio_enable_tx_interrupts(void *ptr) +{ + struct Port *PortP = ptr; + /* int hn; */ + + func_enter(); + + /* hn = PortP->HostP - p->RIOHosts; + + rio_dprintk (RIO_DEBUG_TTY, "Pushing host %d\n", hn); + rio_interrupt (-1,(void *) hn, NULL); */ + + RIOTxEnable((char *) PortP); + + /* + * In general we cannot count on "tx empty" interrupts, although + * the interrupt routine seems to be able to tell the difference. + */ + PortP->gs.port.flags &= ~GS_TX_INTEN; + + func_exit(); +} + + +static void rio_disable_rx_interrupts(void *ptr) +{ + func_enter(); + func_exit(); +} + +static void rio_enable_rx_interrupts(void *ptr) +{ + /* struct rio_port *port = ptr; */ + func_enter(); + func_exit(); +} + + +/* Jeez. Isn't this simple? */ +static int rio_carrier_raised(struct tty_port *port) +{ + struct Port *PortP = container_of(port, struct Port, gs.port); + int rv; + + func_enter(); + rv = (PortP->ModemState & RIOC_MSVR1_CD) != 0; + + rio_dprintk(RIO_DEBUG_INIT, "Getting CD status: %d\n", rv); + + func_exit(); + return rv; +} + + +/* Jeez. Isn't this simple? Actually, we can sync with the actual port + by just pushing stuff into the queue going to the port... */ +static int rio_chars_in_buffer(void *ptr) +{ + func_enter(); + + func_exit(); + return 0; +} + + +/* Nothing special here... */ +static void rio_shutdown_port(void *ptr) +{ + struct Port *PortP; + + func_enter(); + + PortP = (struct Port *) ptr; + PortP->gs.port.tty = NULL; + func_exit(); +} + + +/* I haven't the foggiest why the decrement use count has to happen + here. The whole linux serial drivers stuff needs to be redesigned. + My guess is that this is a hack to minimize the impact of a bug + elsewhere. Thinking about it some more. (try it sometime) Try + running minicom on a serial port that is driven by a modularized + driver. Have the modem hangup. Then remove the driver module. Then + exit minicom. I expect an "oops". -- REW */ +static void rio_hungup(void *ptr) +{ + struct Port *PortP; + + func_enter(); + + PortP = (struct Port *) ptr; + PortP->gs.port.tty = NULL; + + func_exit(); +} + + +/* The standard serial_close would become shorter if you'd wrap it like + this. + rs_close (...){save_flags;cli;real_close();dec_use_count;restore_flags;} + */ +static void rio_close(void *ptr) +{ + struct Port *PortP; + + func_enter(); + + PortP = (struct Port *) ptr; + + riotclose(ptr); + + if (PortP->gs.port.count) { + printk(KERN_ERR "WARNING port count:%d\n", PortP->gs.port.count); + PortP->gs.port.count = 0; + } + + PortP->gs.port.tty = NULL; + func_exit(); +} + + + +static long rio_fw_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + int rc = 0; + func_enter(); + + /* The "dev" argument isn't used. */ + mutex_lock(&rio_fw_mutex); + rc = riocontrol(p, 0, cmd, arg, capable(CAP_SYS_ADMIN)); + mutex_unlock(&rio_fw_mutex); + + func_exit(); + return rc; +} + +extern int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg); + +static int rio_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, unsigned long arg) +{ + void __user *argp = (void __user *)arg; + int rc; + struct Port *PortP; + int ival; + + func_enter(); + + PortP = (struct Port *) tty->driver_data; + + rc = 0; + switch (cmd) { + case TIOCSSOFTCAR: + if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) { + tty->termios->c_cflag = (tty->termios->c_cflag & ~CLOCAL) | (ival ? CLOCAL : 0); + } + break; + case TIOCGSERIAL: + rc = -EFAULT; + if (access_ok(VERIFY_WRITE, argp, sizeof(struct serial_struct))) + rc = gs_getserial(&PortP->gs, argp); + break; + case TCSBRK: + if (PortP->State & RIO_DELETED) { + rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); + rc = -EIO; + } else { + if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, 250) == + RIO_FAIL) { + rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); + rc = -EIO; + } + } + break; + case TCSBRKP: + if (PortP->State & RIO_DELETED) { + rio_dprintk(RIO_DEBUG_TTY, "BREAK on deleted RTA\n"); + rc = -EIO; + } else { + int l; + l = arg ? arg * 100 : 250; + if (l > 255) + l = 255; + if (RIOShortCommand(p, PortP, RIOC_SBREAK, 2, + arg ? arg * 100 : 250) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); + rc = -EIO; + } + } + break; + case TIOCSSERIAL: + rc = -EFAULT; + if (access_ok(VERIFY_READ, argp, sizeof(struct serial_struct))) + rc = gs_setserial(&PortP->gs, argp); + break; + default: + rc = -ENOIOCTLCMD; + break; + } + func_exit(); + return rc; +} + + +/* The throttle/unthrottle scheme for the Specialix card is different + * from other drivers and deserves some explanation. + * The Specialix hardware takes care of XON/XOFF + * and CTS/RTS flow control itself. This means that all we have to + * do when signalled by the upper tty layer to throttle/unthrottle is + * to make a note of it here. When we come to read characters from the + * rx buffers on the card (rio_receive_chars()) we look to see if the + * upper layer can accept more (as noted here in rio_rx_throt[]). + * If it can't we simply don't remove chars from the cards buffer. + * When the tty layer can accept chars, we again note that here and when + * rio_receive_chars() is called it will remove them from the cards buffer. + * The card will notice that a ports buffer has drained below some low + * water mark and will unflow control the line itself, using whatever + * flow control scheme is in use for that port. -- Simon Allen + */ + +static void rio_throttle(struct tty_struct *tty) +{ + struct Port *port = (struct Port *) tty->driver_data; + + func_enter(); + /* If the port is using any type of input flow + * control then throttle the port. + */ + + if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) { + port->State |= RIO_THROTTLE_RX; + } + + func_exit(); +} + + +static void rio_unthrottle(struct tty_struct *tty) +{ + struct Port *port = (struct Port *) tty->driver_data; + + func_enter(); + /* Always unthrottle even if flow control is not enabled on + * this port in case we disabled flow control while the port + * was throttled + */ + + port->State &= ~RIO_THROTTLE_RX; + + func_exit(); + return; +} + + + + + +/* ********************************************************************** * + * Here are the initialization routines. * + * ********************************************************************** */ + + +static struct vpd_prom *get_VPD_PROM(struct Host *hp) +{ + static struct vpd_prom vpdp; + char *p; + int i; + + func_enter(); + rio_dprintk(RIO_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", hp->Caddr + RIO_VPD_ROM); + + p = (char *) &vpdp; + for (i = 0; i < sizeof(struct vpd_prom); i++) + *p++ = readb(hp->Caddr + RIO_VPD_ROM + i * 2); + /* read_rio_byte (hp, RIO_VPD_ROM + i*2); */ + + /* Terminate the identifier string. + *** requires one extra byte in struct vpd_prom *** */ + *p++ = 0; + + if (rio_debug & RIO_DEBUG_PROBE) + my_hd((char *) &vpdp, 0x20); + + func_exit(); + + return &vpdp; +} + +static const struct tty_operations rio_ops = { + .open = riotopen, + .close = gs_close, + .write = gs_write, + .put_char = gs_put_char, + .flush_chars = gs_flush_chars, + .write_room = gs_write_room, + .chars_in_buffer = gs_chars_in_buffer, + .flush_buffer = gs_flush_buffer, + .ioctl = rio_ioctl, + .throttle = rio_throttle, + .unthrottle = rio_unthrottle, + .set_termios = gs_set_termios, + .stop = gs_stop, + .start = gs_start, + .hangup = gs_hangup, +}; + +static int rio_init_drivers(void) +{ + int error = -ENOMEM; + + rio_driver = alloc_tty_driver(256); + if (!rio_driver) + goto out; + rio_driver2 = alloc_tty_driver(256); + if (!rio_driver2) + goto out1; + + func_enter(); + + rio_driver->owner = THIS_MODULE; + rio_driver->driver_name = "specialix_rio"; + rio_driver->name = "ttySR"; + rio_driver->major = RIO_NORMAL_MAJOR0; + rio_driver->type = TTY_DRIVER_TYPE_SERIAL; + rio_driver->subtype = SERIAL_TYPE_NORMAL; + rio_driver->init_termios = tty_std_termios; + rio_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; + rio_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(rio_driver, &rio_ops); + + rio_driver2->owner = THIS_MODULE; + rio_driver2->driver_name = "specialix_rio"; + rio_driver2->name = "ttySR"; + rio_driver2->major = RIO_NORMAL_MAJOR1; + rio_driver2->type = TTY_DRIVER_TYPE_SERIAL; + rio_driver2->subtype = SERIAL_TYPE_NORMAL; + rio_driver2->init_termios = tty_std_termios; + rio_driver2->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; + rio_driver2->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(rio_driver2, &rio_ops); + + rio_dprintk(RIO_DEBUG_INIT, "set_termios = %p\n", gs_set_termios); + + if ((error = tty_register_driver(rio_driver))) + goto out2; + if ((error = tty_register_driver(rio_driver2))) + goto out3; + func_exit(); + return 0; + out3: + tty_unregister_driver(rio_driver); + out2: + put_tty_driver(rio_driver2); + out1: + put_tty_driver(rio_driver); + out: + printk(KERN_ERR "rio: Couldn't register a rio driver, error = %d\n", error); + return 1; +} + +static const struct tty_port_operations rio_port_ops = { + .carrier_raised = rio_carrier_raised, +}; + +static int rio_init_datastructures(void) +{ + int i; + struct Port *port; + func_enter(); + + /* Many drivers statically allocate the maximum number of ports + There is no reason not to allocate them dynamically. Is there? -- REW */ + /* However, the RIO driver allows users to configure their first + RTA as the ports numbered 504-511. We therefore need to allocate + the whole range. :-( -- REW */ + +#define RI_SZ sizeof(struct rio_info) +#define HOST_SZ sizeof(struct Host) +#define PORT_SZ sizeof(struct Port *) +#define TMIO_SZ sizeof(struct termios *) + rio_dprintk(RIO_DEBUG_INIT, "getting : %Zd %Zd %Zd %Zd %Zd bytes\n", RI_SZ, RIO_HOSTS * HOST_SZ, RIO_PORTS * PORT_SZ, RIO_PORTS * TMIO_SZ, RIO_PORTS * TMIO_SZ); + + if (!(p = kzalloc(RI_SZ, GFP_KERNEL))) + goto free0; + if (!(p->RIOHosts = kzalloc(RIO_HOSTS * HOST_SZ, GFP_KERNEL))) + goto free1; + if (!(p->RIOPortp = kzalloc(RIO_PORTS * PORT_SZ, GFP_KERNEL))) + goto free2; + p->RIOConf = RIOConf; + rio_dprintk(RIO_DEBUG_INIT, "Got : %p %p %p\n", p, p->RIOHosts, p->RIOPortp); + +#if 1 + for (i = 0; i < RIO_PORTS; i++) { + port = p->RIOPortp[i] = kzalloc(sizeof(struct Port), GFP_KERNEL); + if (!port) { + goto free6; + } + rio_dprintk(RIO_DEBUG_INIT, "initing port %d (%d)\n", i, port->Mapped); + tty_port_init(&port->gs.port); + port->gs.port.ops = &rio_port_ops; + port->PortNum = i; + port->gs.magic = RIO_MAGIC; + port->gs.close_delay = HZ / 2; + port->gs.closing_wait = 30 * HZ; + port->gs.rd = &rio_real_driver; + spin_lock_init(&port->portSem); + } +#else + /* We could postpone initializing them to when they are configured. */ +#endif + + + + if (rio_debug & RIO_DEBUG_INIT) { + my_hd(&rio_real_driver, sizeof(rio_real_driver)); + } + + + func_exit(); + return 0; + + free6:for (i--; i >= 0; i--) + kfree(p->RIOPortp[i]); +/*free5: + free4: + free3:*/ kfree(p->RIOPortp); + free2:kfree(p->RIOHosts); + free1: + rio_dprintk(RIO_DEBUG_INIT, "Not enough memory! %p %p %p\n", p, p->RIOHosts, p->RIOPortp); + kfree(p); + free0: + return -ENOMEM; +} + +static void __exit rio_release_drivers(void) +{ + func_enter(); + tty_unregister_driver(rio_driver2); + tty_unregister_driver(rio_driver); + put_tty_driver(rio_driver2); + put_tty_driver(rio_driver); + func_exit(); +} + + +#ifdef CONFIG_PCI + /* This was written for SX, but applies to RIO too... + (including bugs....) + + There is another bit besides Bit 17. Turning that bit off + (on boards shipped with the fix in the eeprom) results in a + hang on the next access to the card. + */ + + /******************************************************** + * Setting bit 17 in the CNTRL register of the PLX 9050 * + * chip forces a retry on writes while a read is pending.* + * This is to prevent the card locking up on Intel Xeon * + * multiprocessor systems with the NX chipset. -- NV * + ********************************************************/ + +/* Newer cards are produced with this bit set from the configuration + EEprom. As the bit is read/write for the CPU, we can fix it here, + if we detect that it isn't set correctly. -- REW */ + +static void fix_rio_pci(struct pci_dev *pdev) +{ + unsigned long hwbase; + unsigned char __iomem *rebase; + unsigned int t; + +#define CNTRL_REG_OFFSET 0x50 +#define CNTRL_REG_GOODVALUE 0x18260000 + + hwbase = pci_resource_start(pdev, 0); + rebase = ioremap(hwbase, 0x80); + t = readl(rebase + CNTRL_REG_OFFSET); + if (t != CNTRL_REG_GOODVALUE) { + printk(KERN_DEBUG "rio: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE); + writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); + } + iounmap(rebase); +} +#endif + + +static int __init rio_init(void) +{ + int found = 0; + int i; + struct Host *hp; + int retval; + struct vpd_prom *vpdp; + int okboard; + +#ifdef CONFIG_PCI + struct pci_dev *pdev = NULL; + unsigned short tshort; +#endif + + func_enter(); + rio_dprintk(RIO_DEBUG_INIT, "Initing rio module... (rio_debug=%d)\n", rio_debug); + + if (abs((long) (&rio_debug) - rio_debug) < 0x10000) { + printk(KERN_WARNING "rio: rio_debug is an address, instead of a value. " "Assuming -1. Was %x/%p.\n", rio_debug, &rio_debug); + rio_debug = -1; + } + + if (misc_register(&rio_fw_device) < 0) { + printk(KERN_ERR "RIO: Unable to register firmware loader driver.\n"); + return -EIO; + } + + retval = rio_init_datastructures(); + if (retval < 0) { + misc_deregister(&rio_fw_device); + return retval; + } +#ifdef CONFIG_PCI + /* First look for the JET devices: */ + while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, pdev))) { + u32 tint; + + if (pci_enable_device(pdev)) + continue; + + /* Specialix has a whole bunch of cards with + 0x2000 as the device ID. They say its because + the standard requires it. Stupid standard. */ + /* It seems that reading a word doesn't work reliably on 2.0. + Also, reading a non-aligned dword doesn't work. So we read the + whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID) + ourselves */ + pci_read_config_dword(pdev, 0x2c, &tint); + tshort = (tint >> 16) & 0xffff; + rio_dprintk(RIO_DEBUG_PROBE, "Got a specialix card: %x.\n", tint); + if (tshort != 0x0100) { + rio_dprintk(RIO_DEBUG_PROBE, "But it's not a RIO card (%d)...\n", tshort); + continue; + } + rio_dprintk(RIO_DEBUG_PROBE, "cp1\n"); + + hp = &p->RIOHosts[p->RIONumHosts]; + hp->PaddrP = pci_resource_start(pdev, 2); + hp->Ivec = pdev->irq; + if (((1 << hp->Ivec) & rio_irqmask) == 0) + hp->Ivec = 0; + hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); + hp->CardP = (struct DpRam __iomem *) hp->Caddr; + hp->Type = RIO_PCI; + hp->Copy = rio_copy_to_card; + hp->Mode = RIO_PCI_BOOT_FROM_RAM; + spin_lock_init(&hp->HostLock); + rio_reset_interrupt(hp); + rio_start_card_running(hp); + + rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); + if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) { + rio_dprintk(RIO_DEBUG_INIT, "Done RIOBoardTest\n"); + writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); + p->RIOHosts[p->RIONumHosts].UniqueNum = + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); + rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); + + fix_rio_pci(pdev); + + p->RIOHosts[p->RIONumHosts].pdev = pdev; + pci_dev_get(pdev); + + p->RIOLastPCISearch = 0; + p->RIONumHosts++; + found++; + } else { + iounmap(p->RIOHosts[p->RIONumHosts].Caddr); + p->RIOHosts[p->RIONumHosts].Caddr = NULL; + } + } + + /* Then look for the older PCI card.... : */ + + /* These older PCI cards have problems (only byte-mode access is + supported), which makes them a bit awkward to support. + They also have problems sharing interrupts. Be careful. + (The driver now refuses to share interrupts for these + cards. This should be sufficient). + */ + + /* Then look for the older RIO/PCI devices: */ + while ((pdev = pci_get_device(PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_RIO, pdev))) { + if (pci_enable_device(pdev)) + continue; + +#ifdef CONFIG_RIO_OLDPCI + hp = &p->RIOHosts[p->RIONumHosts]; + hp->PaddrP = pci_resource_start(pdev, 0); + hp->Ivec = pdev->irq; + if (((1 << hp->Ivec) & rio_irqmask) == 0) + hp->Ivec = 0; + hp->Ivec |= 0x8000; /* Mark as non-sharable */ + hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); + hp->CardP = (struct DpRam __iomem *) hp->Caddr; + hp->Type = RIO_PCI; + hp->Copy = rio_copy_to_card; + hp->Mode = RIO_PCI_BOOT_FROM_RAM; + spin_lock_init(&hp->HostLock); + + rio_dprintk(RIO_DEBUG_PROBE, "Ivec: %x\n", hp->Ivec); + rio_dprintk(RIO_DEBUG_PROBE, "Mode: %x\n", hp->Mode); + + rio_reset_interrupt(hp); + rio_start_card_running(hp); + rio_dprintk(RIO_DEBUG_PROBE, "Going to test it (%p/%p).\n", (void *) p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr); + if (RIOBoardTest(p->RIOHosts[p->RIONumHosts].PaddrP, p->RIOHosts[p->RIONumHosts].Caddr, RIO_PCI, 0) == 0) { + writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); + p->RIOHosts[p->RIONumHosts].UniqueNum = + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0]) & 0xFF) << 0) | + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1]) & 0xFF) << 8) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2]) & 0xFF) << 16) | ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3]) & 0xFF) << 24); + rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); + + p->RIOHosts[p->RIONumHosts].pdev = pdev; + pci_dev_get(pdev); + + p->RIOLastPCISearch = 0; + p->RIONumHosts++; + found++; + } else { + iounmap(p->RIOHosts[p->RIONumHosts].Caddr); + p->RIOHosts[p->RIONumHosts].Caddr = NULL; + } +#else + printk(KERN_ERR "Found an older RIO PCI card, but the driver is not " "compiled to support it.\n"); +#endif + } +#endif /* PCI */ + + /* Now probe for ISA cards... */ + for (i = 0; i < NR_RIO_ADDRS; i++) { + hp = &p->RIOHosts[p->RIONumHosts]; + hp->PaddrP = rio_probe_addrs[i]; + /* There was something about the IRQs of these cards. 'Forget what.--REW */ + hp->Ivec = 0; + hp->Caddr = ioremap(p->RIOHosts[p->RIONumHosts].PaddrP, RIO_WINDOW_LEN); + hp->CardP = (struct DpRam __iomem *) hp->Caddr; + hp->Type = RIO_AT; + hp->Copy = rio_copy_to_card; /* AT card PCI???? - PVDL + * -- YES! this is now a normal copy. Only the + * old PCI card uses the special PCI copy. + * Moreover, the ISA card will work with the + * special PCI copy anyway. -- REW */ + hp->Mode = 0; + spin_lock_init(&hp->HostLock); + + vpdp = get_VPD_PROM(hp); + rio_dprintk(RIO_DEBUG_PROBE, "Got VPD ROM\n"); + okboard = 0; + if ((strncmp(vpdp->identifier, RIO_ISA_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA2_IDENT, 16) == 0) || (strncmp(vpdp->identifier, RIO_ISA3_IDENT, 16) == 0)) { + /* Board is present... */ + if (RIOBoardTest(hp->PaddrP, hp->Caddr, RIO_AT, 0) == 0) { + /* ... and feeling fine!!!! */ + rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, uniqid = %x.\n", p->RIOHosts[p->RIONumHosts].UniqueNum); + if (RIOAssignAT(p, hp->PaddrP, hp->Caddr, 0)) { + rio_dprintk(RIO_DEBUG_PROBE, "Hmm Tested ok, host%d uniqid = %x.\n", p->RIONumHosts, p->RIOHosts[p->RIONumHosts - 1].UniqueNum); + okboard++; + found++; + } + } + + if (!okboard) { + iounmap(hp->Caddr); + hp->Caddr = NULL; + } + } + } + + + for (i = 0; i < p->RIONumHosts; i++) { + hp = &p->RIOHosts[i]; + if (hp->Ivec) { + int mode = IRQF_SHARED; + if (hp->Ivec & 0x8000) { + mode = 0; + hp->Ivec &= 0x7fff; + } + rio_dprintk(RIO_DEBUG_INIT, "Requesting interrupt hp: %p rio_interrupt: %d Mode: %x\n", hp, hp->Ivec, hp->Mode); + retval = request_irq(hp->Ivec, rio_interrupt, mode, "rio", hp); + rio_dprintk(RIO_DEBUG_INIT, "Return value from request_irq: %d\n", retval); + if (retval) { + printk(KERN_ERR "rio: Cannot allocate irq %d.\n", hp->Ivec); + hp->Ivec = 0; + } + rio_dprintk(RIO_DEBUG_INIT, "Got irq %d.\n", hp->Ivec); + if (hp->Ivec != 0) { + rio_dprintk(RIO_DEBUG_INIT, "Enabling interrupts on rio card.\n"); + hp->Mode |= RIO_PCI_INT_ENABLE; + } else + hp->Mode &= ~RIO_PCI_INT_ENABLE; + rio_dprintk(RIO_DEBUG_INIT, "New Mode: %x\n", hp->Mode); + rio_start_card_running(hp); + } + /* Init the timer "always" to make sure that it can safely be + deleted when we unload... */ + + setup_timer(&hp->timer, rio_pollfunc, i); + if (!hp->Ivec) { + rio_dprintk(RIO_DEBUG_INIT, "Starting polling at %dj intervals.\n", rio_poll); + mod_timer(&hp->timer, jiffies + rio_poll); + } + } + + if (found) { + rio_dprintk(RIO_DEBUG_INIT, "rio: total of %d boards detected.\n", found); + rio_init_drivers(); + } else { + /* deregister the misc device we created earlier */ + misc_deregister(&rio_fw_device); + } + + func_exit(); + return found ? 0 : -EIO; +} + + +static void __exit rio_exit(void) +{ + int i; + struct Host *hp; + + func_enter(); + + for (i = 0, hp = p->RIOHosts; i < p->RIONumHosts; i++, hp++) { + RIOHostReset(hp->Type, hp->CardP, hp->Slot); + if (hp->Ivec) { + free_irq(hp->Ivec, hp); + rio_dprintk(RIO_DEBUG_INIT, "freed irq %d.\n", hp->Ivec); + } + /* It is safe/allowed to del_timer a non-active timer */ + del_timer_sync(&hp->timer); + if (hp->Caddr) + iounmap(hp->Caddr); + if (hp->Type == RIO_PCI) + pci_dev_put(hp->pdev); + } + + if (misc_deregister(&rio_fw_device) < 0) { + printk(KERN_INFO "rio: couldn't deregister control-device\n"); + } + + + rio_dprintk(RIO_DEBUG_CLEANUP, "Cleaning up drivers\n"); + + rio_release_drivers(); + + /* Release dynamically allocated memory */ + kfree(p->RIOPortp); + kfree(p->RIOHosts); + kfree(p); + + func_exit(); +} + +module_init(rio_init); +module_exit(rio_exit); diff --git a/drivers/staging/generic_serial/rio/rio_linux.h b/drivers/staging/generic_serial/rio/rio_linux.h new file mode 100644 index 000000000000..7f26cd7c815e --- /dev/null +++ b/drivers/staging/generic_serial/rio/rio_linux.h @@ -0,0 +1,197 @@ + +/* + * rio_linux.h + * + * Copyright (C) 1998,1999,2000 R.E.Wolff@BitWizard.nl + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * RIO serial driver. + * + * Version 1.0 -- July, 1999. + * + */ + +#define RIO_NBOARDS 4 +#define RIO_PORTSPERBOARD 128 +#define RIO_NPORTS (RIO_NBOARDS * RIO_PORTSPERBOARD) + +#define MODEM_SUPPORT + +#ifdef __KERNEL__ + +#define RIO_MAGIC 0x12345678 + + +struct vpd_prom { + unsigned short id; + char hwrev; + char hwass; + int uniqid; + char myear; + char mweek; + char hw_feature[5]; + char oem_id; + char identifier[16]; +}; + + +#define RIO_DEBUG_ALL 0xffffffff + +#define O_OTHER(tty) \ + ((O_OLCUC(tty)) ||\ + (O_ONLCR(tty)) ||\ + (O_OCRNL(tty)) ||\ + (O_ONOCR(tty)) ||\ + (O_ONLRET(tty)) ||\ + (O_OFILL(tty)) ||\ + (O_OFDEL(tty)) ||\ + (O_NLDLY(tty)) ||\ + (O_CRDLY(tty)) ||\ + (O_TABDLY(tty)) ||\ + (O_BSDLY(tty)) ||\ + (O_VTDLY(tty)) ||\ + (O_FFDLY(tty))) + +/* Same for input. */ +#define I_OTHER(tty) \ + ((I_INLCR(tty)) ||\ + (I_IGNCR(tty)) ||\ + (I_ICRNL(tty)) ||\ + (I_IUCLC(tty)) ||\ + (L_ISIG(tty))) + + +#endif /* __KERNEL__ */ + + +#define RIO_BOARD_INTR_LOCK 1 + + +#ifndef RIOCTL_MISC_MINOR +/* Allow others to gather this into "major.h" or something like that */ +#define RIOCTL_MISC_MINOR 169 +#endif + + +/* Allow us to debug "in the field" without requiring clients to + recompile.... */ +#if 1 +#define rio_spin_lock_irqsave(sem, flags) do { \ + rio_dprintk (RIO_DEBUG_SPINLOCK, "spinlockirqsave: %p %s:%d\n", \ + sem, __FILE__, __LINE__);\ + spin_lock_irqsave(sem, flags);\ + } while (0) + +#define rio_spin_unlock_irqrestore(sem, flags) do { \ + rio_dprintk (RIO_DEBUG_SPINLOCK, "spinunlockirqrestore: %p %s:%d\n",\ + sem, __FILE__, __LINE__);\ + spin_unlock_irqrestore(sem, flags);\ + } while (0) + +#define rio_spin_lock(sem) do { \ + rio_dprintk (RIO_DEBUG_SPINLOCK, "spinlock: %p %s:%d\n",\ + sem, __FILE__, __LINE__);\ + spin_lock(sem);\ + } while (0) + +#define rio_spin_unlock(sem) do { \ + rio_dprintk (RIO_DEBUG_SPINLOCK, "spinunlock: %p %s:%d\n",\ + sem, __FILE__, __LINE__);\ + spin_unlock(sem);\ + } while (0) +#else +#define rio_spin_lock_irqsave(sem, flags) \ + spin_lock_irqsave(sem, flags) + +#define rio_spin_unlock_irqrestore(sem, flags) \ + spin_unlock_irqrestore(sem, flags) + +#define rio_spin_lock(sem) \ + spin_lock(sem) + +#define rio_spin_unlock(sem) \ + spin_unlock(sem) + +#endif + + + +#ifdef CONFIG_RIO_OLDPCI +static inline void __iomem *rio_memcpy_toio(void __iomem *dummy, void __iomem *dest, void *source, int n) +{ + char __iomem *dst = dest; + char *src = source; + + while (n--) { + writeb(*src++, dst++); + (void) readb(dummy); + } + + return dest; +} + +static inline void __iomem *rio_copy_toio(void __iomem *dest, void *source, int n) +{ + char __iomem *dst = dest; + char *src = source; + + while (n--) + writeb(*src++, dst++); + + return dest; +} + + +static inline void *rio_memcpy_fromio(void *dest, void __iomem *source, int n) +{ + char *dst = dest; + char __iomem *src = source; + + while (n--) + *dst++ = readb(src++); + + return dest; +} + +#else +#define rio_memcpy_toio(dummy,dest,source,n) memcpy_toio(dest, source, n) +#define rio_copy_toio memcpy_toio +#define rio_memcpy_fromio memcpy_fromio +#endif + +#define DEBUG 1 + + +/* + This driver can spew a whole lot of debugging output at you. If you + need maximum performance, you should disable the DEBUG define. To + aid in debugging in the field, I'm leaving the compile-time debug + features enabled, and disable them "runtime". That allows me to + instruct people with problems to enable debugging without requiring + them to recompile... +*/ + +#ifdef DEBUG +#define rio_dprintk(f, str...) do { if (rio_debug & f) printk (str);} while (0) +#define func_enter() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s\n", __func__) +#define func_exit() rio_dprintk (RIO_DEBUG_FLOW, "rio: exit %s\n", __func__) +#define func_enter2() rio_dprintk (RIO_DEBUG_FLOW, "rio: enter %s (port %d)\n",__func__, port->line) +#else +#define rio_dprintk(f, str...) /* nothing */ +#define func_enter() +#define func_exit() +#define func_enter2() +#endif diff --git a/drivers/staging/generic_serial/rio/rioboard.h b/drivers/staging/generic_serial/rio/rioboard.h new file mode 100644 index 000000000000..252230043c82 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioboard.h @@ -0,0 +1,275 @@ +/************************************************************************/ +/* */ +/* Title : RIO Host Card Hardware Definitions */ +/* */ +/* Author : N.P.Vassallo */ +/* */ +/* Creation : 26th April 1999 */ +/* */ +/* Version : 1.0.0 */ +/* */ +/* Copyright : (c) Specialix International Ltd. 1999 * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * */ +/* Description : Prototypes, structures and definitions */ +/* describing the RIO board hardware */ +/* */ +/************************************************************************/ + +#ifndef _rioboard_h /* If RIOBOARD.H not already defined */ +#define _rioboard_h 1 + +/***************************************************************************** +*********************** *********************** +*********************** Hardware Control Registers *********************** +*********************** *********************** +*****************************************************************************/ + +/* Hardware Registers... */ + +#define RIO_REG_BASE 0x7C00 /* Base of control registers */ + +#define RIO_CONFIG RIO_REG_BASE + 0x0000 /* WRITE: Configuration Register */ +#define RIO_INTSET RIO_REG_BASE + 0x0080 /* WRITE: Interrupt Set */ +#define RIO_RESET RIO_REG_BASE + 0x0100 /* WRITE: Host Reset */ +#define RIO_INTRESET RIO_REG_BASE + 0x0180 /* WRITE: Interrupt Reset */ + +#define RIO_VPD_ROM RIO_REG_BASE + 0x0000 /* READ: Vital Product Data ROM */ +#define RIO_INTSTAT RIO_REG_BASE + 0x0080 /* READ: Interrupt Status (Jet boards only) */ +#define RIO_RESETSTAT RIO_REG_BASE + 0x0100 /* READ: Reset Status (Jet boards only) */ + +/* RIO_VPD_ROM definitions... */ +#define VPD_SLX_ID1 0x00 /* READ: Specialix Identifier #1 */ +#define VPD_SLX_ID2 0x01 /* READ: Specialix Identifier #2 */ +#define VPD_HW_REV 0x02 /* READ: Hardware Revision */ +#define VPD_HW_ASSEM 0x03 /* READ: Hardware Assembly Level */ +#define VPD_UNIQUEID4 0x04 /* READ: Unique Identifier #4 */ +#define VPD_UNIQUEID3 0x05 /* READ: Unique Identifier #3 */ +#define VPD_UNIQUEID2 0x06 /* READ: Unique Identifier #2 */ +#define VPD_UNIQUEID1 0x07 /* READ: Unique Identifier #1 */ +#define VPD_MANU_YEAR 0x08 /* READ: Year Of Manufacture (0 = 1970) */ +#define VPD_MANU_WEEK 0x09 /* READ: Week Of Manufacture (0 = week 1 Jan) */ +#define VPD_HWFEATURE1 0x0A /* READ: Hardware Feature Byte 1 */ +#define VPD_HWFEATURE2 0x0B /* READ: Hardware Feature Byte 2 */ +#define VPD_HWFEATURE3 0x0C /* READ: Hardware Feature Byte 3 */ +#define VPD_HWFEATURE4 0x0D /* READ: Hardware Feature Byte 4 */ +#define VPD_HWFEATURE5 0x0E /* READ: Hardware Feature Byte 5 */ +#define VPD_OEMID 0x0F /* READ: OEM Identifier */ +#define VPD_IDENT 0x10 /* READ: Identifier string (16 bytes) */ +#define VPD_IDENT_LEN 0x10 + +/* VPD ROM Definitions... */ +#define SLX_ID1 0x4D +#define SLX_ID2 0x98 + +#define PRODUCT_ID(a) ((a>>4)&0xF) /* Use to obtain Product ID from VPD_UNIQUEID1 */ + +#define ID_SX_ISA 0x2 +#define ID_RIO_EISA 0x3 +#define ID_SX_PCI 0x5 +#define ID_SX_EISA 0x7 +#define ID_RIO_RTA16 0x9 +#define ID_RIO_ISA 0xA +#define ID_RIO_MCA 0xB +#define ID_RIO_SBUS 0xC +#define ID_RIO_PCI 0xD +#define ID_RIO_RTA8 0xE + +/* Transputer bootstrap definitions... */ + +#define BOOTLOADADDR (0x8000 - 6) +#define BOOTINDICATE (0x8000 - 2) + +/* Firmware load position... */ + +#define FIRMWARELOADADDR 0x7C00 /* Firmware is loaded _before_ this address */ + +/***************************************************************************** +***************************** ***************************** +***************************** RIO (Rev1) ISA ***************************** +***************************** ***************************** +*****************************************************************************/ + +/* Control Register Definitions... */ +#define RIO_ISA_IDENT "JBJGPGGHINSMJPJR" + +#define RIO_ISA_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ +#define RIO_ISA_CFG_BUSENABLE 0x02 /* Enable processor bus */ +#define RIO_ISA_CFG_IRQMASK 0x30 /* Interrupt mask */ +#define RIO_ISA_CFG_IRQ12 0x10 /* Interrupt Level 12 */ +#define RIO_ISA_CFG_IRQ11 0x20 /* Interrupt Level 11 */ +#define RIO_ISA_CFG_IRQ9 0x30 /* Interrupt Level 9 */ +#define RIO_ISA_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ +#define RIO_ISA_CFG_WAITSTATE0 0x80 /* 0 waitstates, else 1 */ + +/***************************************************************************** +***************************** ***************************** +***************************** RIO (Rev2) ISA ***************************** +***************************** ***************************** +*****************************************************************************/ + +/* Control Register Definitions... */ +#define RIO_ISA2_IDENT "JBJGPGGHINSMJPJR" + +#define RIO_ISA2_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ +#define RIO_ISA2_CFG_BUSENABLE 0x02 /* Enable processor bus */ +#define RIO_ISA2_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ +#define RIO_ISA2_CFG_16BIT 0x08 /* 16bit mode, else 8bit */ +#define RIO_ISA2_CFG_IRQMASK 0x30 /* Interrupt mask */ +#define RIO_ISA2_CFG_IRQ15 0x00 /* Interrupt Level 15 */ +#define RIO_ISA2_CFG_IRQ12 0x10 /* Interrupt Level 12 */ +#define RIO_ISA2_CFG_IRQ11 0x20 /* Interrupt Level 11 */ +#define RIO_ISA2_CFG_IRQ9 0x30 /* Interrupt Level 9 */ +#define RIO_ISA2_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ +#define RIO_ISA2_CFG_WAITSTATE0 0x80 /* 0 waitstates, else 1 */ + +/***************************************************************************** +***************************** ****************************** +***************************** RIO (Jet) ISA ****************************** +***************************** ****************************** +*****************************************************************************/ + +/* Control Register Definitions... */ +#define RIO_ISA3_IDENT "JET HOST BY KEV#" + +#define RIO_ISA3_CFG_BUSENABLE 0x02 /* Enable processor bus */ +#define RIO_ISA3_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ +#define RIO_ISA32_CFG_IRQMASK 0xF30 /* Interrupt mask */ +#define RIO_ISA3_CFG_IRQ15 0xF0 /* Interrupt Level 15 */ +#define RIO_ISA3_CFG_IRQ12 0xC0 /* Interrupt Level 12 */ +#define RIO_ISA3_CFG_IRQ11 0xB0 /* Interrupt Level 11 */ +#define RIO_ISA3_CFG_IRQ10 0xA0 /* Interrupt Level 10 */ +#define RIO_ISA3_CFG_IRQ9 0x90 /* Interrupt Level 9 */ + +/***************************************************************************** +********************************* ******************************** +********************************* RIO MCA ******************************** +********************************* ******************************** +*****************************************************************************/ + +/* Control Register Definitions... */ +#define RIO_MCA_IDENT "JBJGPGGHINSMJPJR" + +#define RIO_MCA_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ +#define RIO_MCA_CFG_BUSENABLE 0x02 /* Enable processor bus */ +#define RIO_MCA_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ + +/***************************************************************************** +******************************** ******************************** +******************************** RIO EISA ******************************** +******************************** ******************************** +*****************************************************************************/ + +/* EISA Configuration Space Definitions... */ +#define EISA_PRODUCT_ID1 0xC80 +#define EISA_PRODUCT_ID2 0xC81 +#define EISA_PRODUCT_NUMBER 0xC82 +#define EISA_REVISION_NUMBER 0xC83 +#define EISA_CARD_ENABLE 0xC84 +#define EISA_VPD_UNIQUEID4 0xC88 /* READ: Unique Identifier #4 */ +#define EISA_VPD_UNIQUEID3 0xC8A /* READ: Unique Identifier #3 */ +#define EISA_VPD_UNIQUEID2 0xC90 /* READ: Unique Identifier #2 */ +#define EISA_VPD_UNIQUEID1 0xC92 /* READ: Unique Identifier #1 */ +#define EISA_VPD_MANU_YEAR 0xC98 /* READ: Year Of Manufacture (0 = 1970) */ +#define EISA_VPD_MANU_WEEK 0xC9A /* READ: Week Of Manufacture (0 = week 1 Jan) */ +#define EISA_MEM_ADDR_23_16 0xC00 +#define EISA_MEM_ADDR_31_24 0xC01 +#define EISA_RIO_CONFIG 0xC02 /* WRITE: Configuration Register */ +#define EISA_RIO_INTSET 0xC03 /* WRITE: Interrupt Set */ +#define EISA_RIO_INTRESET 0xC03 /* READ: Interrupt Reset */ + +/* Control Register Definitions... */ +#define RIO_EISA_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ +#define RIO_EISA_CFG_LINK20 0x02 /* 20Mbps link, else 10Mbps */ +#define RIO_EISA_CFG_BUSENABLE 0x04 /* Enable processor bus */ +#define RIO_EISA_CFG_PROCRUN 0x08 /* Processor running, else reset */ +#define RIO_EISA_CFG_IRQMASK 0xF0 /* Interrupt mask */ +#define RIO_EISA_CFG_IRQ15 0xF0 /* Interrupt Level 15 */ +#define RIO_EISA_CFG_IRQ14 0xE0 /* Interrupt Level 14 */ +#define RIO_EISA_CFG_IRQ12 0xC0 /* Interrupt Level 12 */ +#define RIO_EISA_CFG_IRQ11 0xB0 /* Interrupt Level 11 */ +#define RIO_EISA_CFG_IRQ10 0xA0 /* Interrupt Level 10 */ +#define RIO_EISA_CFG_IRQ9 0x90 /* Interrupt Level 9 */ +#define RIO_EISA_CFG_IRQ7 0x70 /* Interrupt Level 7 */ +#define RIO_EISA_CFG_IRQ6 0x60 /* Interrupt Level 6 */ +#define RIO_EISA_CFG_IRQ5 0x50 /* Interrupt Level 5 */ +#define RIO_EISA_CFG_IRQ4 0x40 /* Interrupt Level 4 */ +#define RIO_EISA_CFG_IRQ3 0x30 /* Interrupt Level 3 */ + +/***************************************************************************** +******************************** ******************************** +******************************** RIO SBus ******************************** +******************************** ******************************** +*****************************************************************************/ + +/* Control Register Definitions... */ +#define RIO_SBUS_IDENT "JBPGK#\0\0\0\0\0\0\0\0\0\0" + +#define RIO_SBUS_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ +#define RIO_SBUS_CFG_BUSENABLE 0x02 /* Enable processor bus */ +#define RIO_SBUS_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ +#define RIO_SBUS_CFG_IRQMASK 0x38 /* Interrupt mask */ +#define RIO_SBUS_CFG_IRQNONE 0x00 /* No Interrupt */ +#define RIO_SBUS_CFG_IRQ7 0x38 /* Interrupt Level 7 */ +#define RIO_SBUS_CFG_IRQ6 0x30 /* Interrupt Level 6 */ +#define RIO_SBUS_CFG_IRQ5 0x28 /* Interrupt Level 5 */ +#define RIO_SBUS_CFG_IRQ4 0x20 /* Interrupt Level 4 */ +#define RIO_SBUS_CFG_IRQ3 0x18 /* Interrupt Level 3 */ +#define RIO_SBUS_CFG_IRQ2 0x10 /* Interrupt Level 2 */ +#define RIO_SBUS_CFG_IRQ1 0x08 /* Interrupt Level 1 */ +#define RIO_SBUS_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ +#define RIO_SBUS_CFG_PROC25 0x80 /* 25Mhz processor clock, else 20Mhz */ + +/***************************************************************************** +********************************* ******************************** +********************************* RIO PCI ******************************** +********************************* ******************************** +*****************************************************************************/ + +/* Control Register Definitions... */ +#define RIO_PCI_IDENT "ECDDPGJGJHJRGSK#" + +#define RIO_PCI_CFG_BOOTRAM 0x01 /* Boot from RAM, else Link */ +#define RIO_PCI_CFG_BUSENABLE 0x02 /* Enable processor bus */ +#define RIO_PCI_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ +#define RIO_PCI_CFG_LINK20 0x40 /* 20Mbps link, else 10Mbps */ +#define RIO_PCI_CFG_PROC25 0x80 /* 25Mhz processor clock, else 20Mhz */ + +/* PCI Definitions... */ +#define SPX_VENDOR_ID 0x11CB /* Assigned by the PCI SIG */ +#define SPX_DEVICE_ID 0x8000 /* RIO bridge boards */ +#define SPX_PLXDEVICE_ID 0x2000 /* PLX bridge boards */ +#define SPX_SUB_VENDOR_ID SPX_VENDOR_ID /* Same as vendor id */ +#define RIO_SUB_SYS_ID 0x0800 /* RIO PCI board */ + +/***************************************************************************** +***************************** ****************************** +***************************** RIO (Jet) PCI ****************************** +***************************** ****************************** +*****************************************************************************/ + +/* Control Register Definitions... */ +#define RIO_PCI2_IDENT "JET HOST BY KEV#" + +#define RIO_PCI2_CFG_BUSENABLE 0x02 /* Enable processor bus */ +#define RIO_PCI2_CFG_INTENABLE 0x04 /* Interrupt enable, else disable */ + +/* PCI Definitions... */ +#define RIO2_SUB_SYS_ID 0x0100 /* RIO (Jet) PCI board */ + +#endif /*_rioboard_h */ + +/* End of RIOBOARD.H */ diff --git a/drivers/staging/generic_serial/rio/rioboot.c b/drivers/staging/generic_serial/rio/rioboot.c new file mode 100644 index 000000000000..d956dd316005 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioboot.c @@ -0,0 +1,1113 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rioboot.c +** SID : 1.3 +** Last Modified : 11/6/98 10:33:36 +** Retrieved : 11/6/98 10:33:48 +** +** ident @(#)rioboot.c 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" + +static int RIOBootComplete(struct rio_info *p, struct Host *HostP, unsigned int Rup, struct PktCmd __iomem *PktCmdP); + +static const unsigned char RIOAtVec2Ctrl[] = { + /* 0 */ INTERRUPT_DISABLE, + /* 1 */ INTERRUPT_DISABLE, + /* 2 */ INTERRUPT_DISABLE, + /* 3 */ INTERRUPT_DISABLE, + /* 4 */ INTERRUPT_DISABLE, + /* 5 */ INTERRUPT_DISABLE, + /* 6 */ INTERRUPT_DISABLE, + /* 7 */ INTERRUPT_DISABLE, + /* 8 */ INTERRUPT_DISABLE, + /* 9 */ IRQ_9 | INTERRUPT_ENABLE, + /* 10 */ INTERRUPT_DISABLE, + /* 11 */ IRQ_11 | INTERRUPT_ENABLE, + /* 12 */ IRQ_12 | INTERRUPT_ENABLE, + /* 13 */ INTERRUPT_DISABLE, + /* 14 */ INTERRUPT_DISABLE, + /* 15 */ IRQ_15 | INTERRUPT_ENABLE +}; + +/** + * RIOBootCodeRTA - Load RTA boot code + * @p: RIO to load + * @rbp: Download descriptor + * + * Called when the user process initiates booting of the card firmware. + * Lads the firmware + */ + +int RIOBootCodeRTA(struct rio_info *p, struct DownLoad * rbp) +{ + int offset; + + func_enter(); + + rio_dprintk(RIO_DEBUG_BOOT, "Data at user address %p\n", rbp->DataP); + + /* + ** Check that we have set asside enough memory for this + */ + if (rbp->Count > SIXTY_FOUR_K) { + rio_dprintk(RIO_DEBUG_BOOT, "RTA Boot Code Too Large!\n"); + p->RIOError.Error = HOST_FILE_TOO_LARGE; + func_exit(); + return -ENOMEM; + } + + if (p->RIOBooting) { + rio_dprintk(RIO_DEBUG_BOOT, "RTA Boot Code : BUSY BUSY BUSY!\n"); + p->RIOError.Error = BOOT_IN_PROGRESS; + func_exit(); + return -EBUSY; + } + + /* + ** The data we load in must end on a (RTA_BOOT_DATA_SIZE) byte boundary, + ** so calculate how far we have to move the data up the buffer + ** to achieve this. + */ + offset = (RTA_BOOT_DATA_SIZE - (rbp->Count % RTA_BOOT_DATA_SIZE)) % RTA_BOOT_DATA_SIZE; + + /* + ** Be clean, and clear the 'unused' portion of the boot buffer, + ** because it will (eventually) be part of the Rta run time environment + ** and so should be zeroed. + */ + memset(p->RIOBootPackets, 0, offset); + + /* + ** Copy the data from user space into the array + */ + + if (copy_from_user(((u8 *)p->RIOBootPackets) + offset, rbp->DataP, rbp->Count)) { + rio_dprintk(RIO_DEBUG_BOOT, "Bad data copy from user space\n"); + p->RIOError.Error = COPYIN_FAILED; + func_exit(); + return -EFAULT; + } + + /* + ** Make sure that our copy of the size includes that offset we discussed + ** earlier. + */ + p->RIONumBootPkts = (rbp->Count + offset) / RTA_BOOT_DATA_SIZE; + p->RIOBootCount = rbp->Count; + + func_exit(); + return 0; +} + +/** + * rio_start_card_running - host card start + * @HostP: The RIO to kick off + * + * Start a RIO processor unit running. Encapsulates the knowledge + * of the card type. + */ + +void rio_start_card_running(struct Host *HostP) +{ + switch (HostP->Type) { + case RIO_AT: + rio_dprintk(RIO_DEBUG_BOOT, "Start ISA card running\n"); + writeb(BOOT_FROM_RAM | EXTERNAL_BUS_ON | HostP->Mode | RIOAtVec2Ctrl[HostP->Ivec & 0xF], &HostP->Control); + break; + case RIO_PCI: + /* + ** PCI is much the same as MCA. Everything is once again memory + ** mapped, so we are writing to memory registers instead of io + ** ports. + */ + rio_dprintk(RIO_DEBUG_BOOT, "Start PCI card running\n"); + writeb(PCITpBootFromRam | PCITpBusEnable | HostP->Mode, &HostP->Control); + break; + default: + rio_dprintk(RIO_DEBUG_BOOT, "Unknown host type %d\n", HostP->Type); + break; + } + return; +} + +/* +** Load in the host boot code - load it directly onto all halted hosts +** of the correct type. +** +** Put your rubber pants on before messing with this code - even the magic +** numbers have trouble understanding what they are doing here. +*/ + +int RIOBootCodeHOST(struct rio_info *p, struct DownLoad *rbp) +{ + struct Host *HostP; + u8 __iomem *Cad; + PARM_MAP __iomem *ParmMapP; + int RupN; + int PortN; + unsigned int host; + u8 __iomem *StartP; + u8 __iomem *DestP; + int wait_count; + u16 OldParmMap; + u16 offset; /* It is very important that this is a u16 */ + u8 *DownCode = NULL; + unsigned long flags; + + HostP = NULL; /* Assure the compiler we've initialized it */ + + + /* Walk the hosts */ + for (host = 0; host < p->RIONumHosts; host++) { + rio_dprintk(RIO_DEBUG_BOOT, "Attempt to boot host %d\n", host); + HostP = &p->RIOHosts[host]; + + rio_dprintk(RIO_DEBUG_BOOT, "Host Type = 0x%x, Mode = 0x%x, IVec = 0x%x\n", HostP->Type, HostP->Mode, HostP->Ivec); + + /* Don't boot hosts already running */ + if ((HostP->Flags & RUN_STATE) != RC_WAITING) { + rio_dprintk(RIO_DEBUG_BOOT, "%s %d already running\n", "Host", host); + continue; + } + + /* + ** Grab a pointer to the card (ioremapped) + */ + Cad = HostP->Caddr; + + /* + ** We are going to (try) and load in rbp->Count bytes. + ** The last byte will reside at p->RIOConf.HostLoadBase-1; + ** Therefore, we need to start copying at address + ** (caddr+p->RIOConf.HostLoadBase-rbp->Count) + */ + StartP = &Cad[p->RIOConf.HostLoadBase - rbp->Count]; + + rio_dprintk(RIO_DEBUG_BOOT, "kernel virtual address for host is %p\n", Cad); + rio_dprintk(RIO_DEBUG_BOOT, "kernel virtual address for download is %p\n", StartP); + rio_dprintk(RIO_DEBUG_BOOT, "host loadbase is 0x%x\n", p->RIOConf.HostLoadBase); + rio_dprintk(RIO_DEBUG_BOOT, "size of download is 0x%x\n", rbp->Count); + + /* Make sure it fits */ + if (p->RIOConf.HostLoadBase < rbp->Count) { + rio_dprintk(RIO_DEBUG_BOOT, "Bin too large\n"); + p->RIOError.Error = HOST_FILE_TOO_LARGE; + func_exit(); + return -EFBIG; + } + /* + ** Ensure that the host really is stopped. + ** Disable it's external bus & twang its reset line. + */ + RIOHostReset(HostP->Type, HostP->CardP, HostP->Slot); + + /* + ** Copy the data directly from user space to the SRAM. + ** This ain't going to be none too clever if the download + ** code is bigger than this segment. + */ + rio_dprintk(RIO_DEBUG_BOOT, "Copy in code\n"); + + /* Buffer to local memory as we want to use I/O space and + some cards only do 8 or 16 bit I/O */ + + DownCode = vmalloc(rbp->Count); + if (!DownCode) { + p->RIOError.Error = NOT_ENOUGH_CORE_FOR_PCI_COPY; + func_exit(); + return -ENOMEM; + } + if (copy_from_user(DownCode, rbp->DataP, rbp->Count)) { + kfree(DownCode); + p->RIOError.Error = COPYIN_FAILED; + func_exit(); + return -EFAULT; + } + HostP->Copy(DownCode, StartP, rbp->Count); + vfree(DownCode); + + rio_dprintk(RIO_DEBUG_BOOT, "Copy completed\n"); + + /* + ** S T O P ! + ** + ** Upto this point the code has been fairly rational, and possibly + ** even straight forward. What follows is a pile of crud that will + ** magically turn into six bytes of transputer assembler. Normally + ** you would expect an array or something, but, being me, I have + ** chosen [been told] to use a technique whereby the startup code + ** will be correct if we change the loadbase for the code. Which + ** brings us onto another issue - the loadbase is the *end* of the + ** code, not the start. + ** + ** If I were you I wouldn't start from here. + */ + + /* + ** We now need to insert a short boot section into + ** the memory at the end of Sram2. This is normally (de)composed + ** of the last eight bytes of the download code. The + ** download has been assembled/compiled to expect to be + ** loaded from 0x7FFF downwards. We have loaded it + ** at some other address. The startup code goes into the small + ** ram window at Sram2, in the last 8 bytes, which are really + ** at addresses 0x7FF8-0x7FFF. + ** + ** If the loadbase is, say, 0x7C00, then we need to branch to + ** address 0x7BFE to run the host.bin startup code. We assemble + ** this jump manually. + ** + ** The two byte sequence 60 08 is loaded into memory at address + ** 0x7FFE,F. This is a local branch to location 0x7FF8 (60 is nfix 0, + ** which adds '0' to the .O register, complements .O, and then shifts + ** it left by 4 bit positions, 08 is a jump .O+8 instruction. This will + ** add 8 to .O (which was 0xFFF0), and will branch RELATIVE to the new + ** location. Now, the branch starts from the value of .PC (or .IP or + ** whatever the bloody register is called on this chip), and the .PC + ** will be pointing to the location AFTER the branch, in this case + ** .PC == 0x8000, so the branch will be to 0x8000+0xFFF8 = 0x7FF8. + ** + ** A long branch is coded at 0x7FF8. This consists of loading a four + ** byte offset into .O using nfix (as above) and pfix operators. The + ** pfix operates in exactly the same way as the nfix operator, but + ** without the complement operation. The offset, of course, must be + ** relative to the address of the byte AFTER the branch instruction, + ** which will be (urm) 0x7FFC, so, our final destination of the branch + ** (loadbase-2), has to be reached from here. Imagine that the loadbase + ** is 0x7C00 (which it is), then we will need to branch to 0x7BFE (which + ** is the first byte of the initial two byte short local branch of the + ** download code). + ** + ** To code a jump from 0x7FFC (which is where the branch will start + ** from) to 0x7BFE, we will need to branch 0xFC02 bytes (0x7FFC+0xFC02)= + ** 0x7BFE. + ** This will be coded as four bytes: + ** 60 2C 20 02 + ** being nfix .O+0 + ** pfix .O+C + ** pfix .O+0 + ** jump .O+2 + ** + ** The nfix operator is used, so that the startup code will be + ** compatible with the whole Tp family. (lies, damn lies, it'll never + ** work in a month of Sundays). + ** + ** The nfix nyble is the 1s complement of the nyble value you + ** want to load - in this case we wanted 'F' so we nfix loaded '0'. + */ + + + /* + ** Dest points to the top 8 bytes of Sram2. The Tp jumps + ** to 0x7FFE at reset time, and starts executing. This is + ** a short branch to 0x7FF8, where a long branch is coded. + */ + + DestP = &Cad[0x7FF8]; /* <<<---- READ THE ABOVE COMMENTS */ + +#define NFIX(N) (0x60 | (N)) /* .O = (~(.O + N))<<4 */ +#define PFIX(N) (0x20 | (N)) /* .O = (.O + N)<<4 */ +#define JUMP(N) (0x00 | (N)) /* .PC = .PC + .O */ + + /* + ** 0x7FFC is the address of the location following the last byte of + ** the four byte jump instruction. + ** READ THE ABOVE COMMENTS + ** + ** offset is (TO-FROM) % MEMSIZE, but with compound buggering about. + ** Memsize is 64K for this range of Tp, so offset is a short (unsigned, + ** cos I don't understand 2's complement). + */ + offset = (p->RIOConf.HostLoadBase - 2) - 0x7FFC; + + writeb(NFIX(((unsigned short) (~offset) >> (unsigned short) 12) & 0xF), DestP); + writeb(PFIX((offset >> 8) & 0xF), DestP + 1); + writeb(PFIX((offset >> 4) & 0xF), DestP + 2); + writeb(JUMP(offset & 0xF), DestP + 3); + + writeb(NFIX(0), DestP + 6); + writeb(JUMP(8), DestP + 7); + + rio_dprintk(RIO_DEBUG_BOOT, "host loadbase is 0x%x\n", p->RIOConf.HostLoadBase); + rio_dprintk(RIO_DEBUG_BOOT, "startup offset is 0x%x\n", offset); + + /* + ** Flag what is going on + */ + HostP->Flags &= ~RUN_STATE; + HostP->Flags |= RC_STARTUP; + + /* + ** Grab a copy of the current ParmMap pointer, so we + ** can tell when it has changed. + */ + OldParmMap = readw(&HostP->__ParmMapR); + + rio_dprintk(RIO_DEBUG_BOOT, "Original parmmap is 0x%x\n", OldParmMap); + + /* + ** And start it running (I hope). + ** As there is nothing dodgy or obscure about the + ** above code, this is guaranteed to work every time. + */ + rio_dprintk(RIO_DEBUG_BOOT, "Host Type = 0x%x, Mode = 0x%x, IVec = 0x%x\n", HostP->Type, HostP->Mode, HostP->Ivec); + + rio_start_card_running(HostP); + + rio_dprintk(RIO_DEBUG_BOOT, "Set control port\n"); + + /* + ** Now, wait for upto five seconds for the Tp to setup the parmmap + ** pointer: + */ + for (wait_count = 0; (wait_count < p->RIOConf.StartupTime) && (readw(&HostP->__ParmMapR) == OldParmMap); wait_count++) { + rio_dprintk(RIO_DEBUG_BOOT, "Checkout %d, 0x%x\n", wait_count, readw(&HostP->__ParmMapR)); + mdelay(100); + + } + + /* + ** If the parmmap pointer is unchanged, then the host code + ** has crashed & burned in a really spectacular way + */ + if (readw(&HostP->__ParmMapR) == OldParmMap) { + rio_dprintk(RIO_DEBUG_BOOT, "parmmap 0x%x\n", readw(&HostP->__ParmMapR)); + rio_dprintk(RIO_DEBUG_BOOT, "RIO Mesg Run Fail\n"); + HostP->Flags &= ~RUN_STATE; + HostP->Flags |= RC_STUFFED; + RIOHostReset( HostP->Type, HostP->CardP, HostP->Slot ); + continue; + } + + rio_dprintk(RIO_DEBUG_BOOT, "Running 0x%x\n", readw(&HostP->__ParmMapR)); + + /* + ** Well, the board thought it was OK, and setup its parmmap + ** pointer. For the time being, we will pretend that this + ** board is running, and check out what the error flag says. + */ + + /* + ** Grab a 32 bit pointer to the parmmap structure + */ + ParmMapP = (PARM_MAP __iomem *) RIO_PTR(Cad, readw(&HostP->__ParmMapR)); + rio_dprintk(RIO_DEBUG_BOOT, "ParmMapP : %p\n", ParmMapP); + ParmMapP = (PARM_MAP __iomem *)(Cad + readw(&HostP->__ParmMapR)); + rio_dprintk(RIO_DEBUG_BOOT, "ParmMapP : %p\n", ParmMapP); + + /* + ** The links entry should be 0xFFFF; we set it up + ** with a mask to say how many PHBs to use, and + ** which links to use. + */ + if (readw(&ParmMapP->links) != 0xFFFF) { + rio_dprintk(RIO_DEBUG_BOOT, "RIO Mesg Run Fail %s\n", HostP->Name); + rio_dprintk(RIO_DEBUG_BOOT, "Links = 0x%x\n", readw(&ParmMapP->links)); + HostP->Flags &= ~RUN_STATE; + HostP->Flags |= RC_STUFFED; + RIOHostReset( HostP->Type, HostP->CardP, HostP->Slot ); + continue; + } + + writew(RIO_LINK_ENABLE, &ParmMapP->links); + + /* + ** now wait for the card to set all the parmmap->XXX stuff + ** this is a wait of upto two seconds.... + */ + rio_dprintk(RIO_DEBUG_BOOT, "Looking for init_done - %d ticks\n", p->RIOConf.StartupTime); + HostP->timeout_id = 0; + for (wait_count = 0; (wait_count < p->RIOConf.StartupTime) && !readw(&ParmMapP->init_done); wait_count++) { + rio_dprintk(RIO_DEBUG_BOOT, "Waiting for init_done\n"); + mdelay(100); + } + rio_dprintk(RIO_DEBUG_BOOT, "OK! init_done!\n"); + + if (readw(&ParmMapP->error) != E_NO_ERROR || !readw(&ParmMapP->init_done)) { + rio_dprintk(RIO_DEBUG_BOOT, "RIO Mesg Run Fail %s\n", HostP->Name); + rio_dprintk(RIO_DEBUG_BOOT, "Timedout waiting for init_done\n"); + HostP->Flags &= ~RUN_STATE; + HostP->Flags |= RC_STUFFED; + RIOHostReset( HostP->Type, HostP->CardP, HostP->Slot ); + continue; + } + + rio_dprintk(RIO_DEBUG_BOOT, "Got init_done\n"); + + /* + ** It runs! It runs! + */ + rio_dprintk(RIO_DEBUG_BOOT, "Host ID %x Running\n", HostP->UniqueNum); + + /* + ** set the time period between interrupts. + */ + writew(p->RIOConf.Timer, &ParmMapP->timer); + + /* + ** Translate all the 16 bit pointers in the __ParmMapR into + ** 32 bit pointers for the driver in ioremap space. + */ + HostP->ParmMapP = ParmMapP; + HostP->PhbP = (struct PHB __iomem *) RIO_PTR(Cad, readw(&ParmMapP->phb_ptr)); + HostP->RupP = (struct RUP __iomem *) RIO_PTR(Cad, readw(&ParmMapP->rups)); + HostP->PhbNumP = (unsigned short __iomem *) RIO_PTR(Cad, readw(&ParmMapP->phb_num_ptr)); + HostP->LinkStrP = (struct LPB __iomem *) RIO_PTR(Cad, readw(&ParmMapP->link_str_ptr)); + + /* + ** point the UnixRups at the real Rups + */ + for (RupN = 0; RupN < MAX_RUP; RupN++) { + HostP->UnixRups[RupN].RupP = &HostP->RupP[RupN]; + HostP->UnixRups[RupN].Id = RupN + 1; + HostP->UnixRups[RupN].BaseSysPort = NO_PORT; + spin_lock_init(&HostP->UnixRups[RupN].RupLock); + } + + for (RupN = 0; RupN < LINKS_PER_UNIT; RupN++) { + HostP->UnixRups[RupN + MAX_RUP].RupP = &HostP->LinkStrP[RupN].rup; + HostP->UnixRups[RupN + MAX_RUP].Id = 0; + HostP->UnixRups[RupN + MAX_RUP].BaseSysPort = NO_PORT; + spin_lock_init(&HostP->UnixRups[RupN + MAX_RUP].RupLock); + } + + /* + ** point the PortP->Phbs at the real Phbs + */ + for (PortN = p->RIOFirstPortsMapped; PortN < p->RIOLastPortsMapped + PORTS_PER_RTA; PortN++) { + if (p->RIOPortp[PortN]->HostP == HostP) { + struct Port *PortP = p->RIOPortp[PortN]; + struct PHB __iomem *PhbP; + /* int oldspl; */ + + if (!PortP->Mapped) + continue; + + PhbP = &HostP->PhbP[PortP->HostPort]; + rio_spin_lock_irqsave(&PortP->portSem, flags); + + PortP->PhbP = PhbP; + + PortP->TxAdd = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->tx_add)); + PortP->TxStart = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->tx_start)); + PortP->TxEnd = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->tx_end)); + PortP->RxRemove = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->rx_remove)); + PortP->RxStart = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->rx_start)); + PortP->RxEnd = (u16 __iomem *) RIO_PTR(Cad, readw(&PhbP->rx_end)); + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + /* + ** point the UnixRup at the base SysPort + */ + if (!(PortN % PORTS_PER_RTA)) + HostP->UnixRups[PortP->RupNum].BaseSysPort = PortN; + } + } + + rio_dprintk(RIO_DEBUG_BOOT, "Set the card running... \n"); + /* + ** last thing - show the world that everything is in place + */ + HostP->Flags &= ~RUN_STATE; + HostP->Flags |= RC_RUNNING; + } + /* + ** MPX always uses a poller. This is actually patched into the system + ** configuration and called directly from each clock tick. + ** + */ + p->RIOPolling = 1; + + p->RIOSystemUp++; + + rio_dprintk(RIO_DEBUG_BOOT, "Done everything %x\n", HostP->Ivec); + func_exit(); + return 0; +} + + + +/** + * RIOBootRup - Boot an RTA + * @p: rio we are working with + * @Rup: Rup number + * @HostP: host object + * @PacketP: packet to use + * + * If we have successfully processed this boot, then + * return 1. If we havent, then return 0. + */ + +int RIOBootRup(struct rio_info *p, unsigned int Rup, struct Host *HostP, struct PKT __iomem *PacketP) +{ + struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *) PacketP->data; + struct PktCmd_M *PktReplyP; + struct CmdBlk *CmdBlkP; + unsigned int sequence; + + /* + ** If we haven't been told what to boot, we can't boot it. + */ + if (p->RIONumBootPkts == 0) { + rio_dprintk(RIO_DEBUG_BOOT, "No RTA code to download yet\n"); + return 0; + } + + /* + ** Special case of boot completed - if we get one of these then we + ** don't need a command block. For all other cases we do, so handle + ** this first and then get a command block, then handle every other + ** case, relinquishing the command block if disaster strikes! + */ + if ((readb(&PacketP->len) & PKT_CMD_BIT) && (readb(&PktCmdP->Command) == BOOT_COMPLETED)) + return RIOBootComplete(p, HostP, Rup, PktCmdP); + + /* + ** Try to allocate a command block. This is in kernel space + */ + if (!(CmdBlkP = RIOGetCmdBlk())) { + rio_dprintk(RIO_DEBUG_BOOT, "No command blocks to boot RTA! come back later.\n"); + return 0; + } + + /* + ** Fill in the default info on the command block + */ + CmdBlkP->Packet.dest_unit = Rup < (unsigned short) MAX_RUP ? Rup : 0; + CmdBlkP->Packet.dest_port = BOOT_RUP; + CmdBlkP->Packet.src_unit = 0; + CmdBlkP->Packet.src_port = BOOT_RUP; + + CmdBlkP->PreFuncP = CmdBlkP->PostFuncP = NULL; + PktReplyP = (struct PktCmd_M *) CmdBlkP->Packet.data; + + /* + ** process COMMANDS on the boot rup! + */ + if (readb(&PacketP->len) & PKT_CMD_BIT) { + /* + ** We only expect one type of command - a BOOT_REQUEST! + */ + if (readb(&PktCmdP->Command) != BOOT_REQUEST) { + rio_dprintk(RIO_DEBUG_BOOT, "Unexpected command %d on BOOT RUP %d of host %Zd\n", readb(&PktCmdP->Command), Rup, HostP - p->RIOHosts); + RIOFreeCmdBlk(CmdBlkP); + return 1; + } + + /* + ** Build a Boot Sequence command block + ** + ** We no longer need to use "Boot Mode", we'll always allow + ** boot requests - the boot will not complete if the device + ** appears in the bindings table. + ** + ** We'll just (always) set the command field in packet reply + ** to allow an attempted boot sequence : + */ + PktReplyP->Command = BOOT_SEQUENCE; + + PktReplyP->BootSequence.NumPackets = p->RIONumBootPkts; + PktReplyP->BootSequence.LoadBase = p->RIOConf.RtaLoadBase; + PktReplyP->BootSequence.CodeSize = p->RIOBootCount; + + CmdBlkP->Packet.len = BOOT_SEQUENCE_LEN | PKT_CMD_BIT; + + memcpy((void *) &CmdBlkP->Packet.data[BOOT_SEQUENCE_LEN], "BOOT", 4); + + rio_dprintk(RIO_DEBUG_BOOT, "Boot RTA on Host %Zd Rup %d - %d (0x%x) packets to 0x%x\n", HostP - p->RIOHosts, Rup, p->RIONumBootPkts, p->RIONumBootPkts, p->RIOConf.RtaLoadBase); + + /* + ** If this host is in slave mode, send the RTA an invalid boot + ** sequence command block to force it to kill the boot. We wait + ** for half a second before sending this packet to prevent the RTA + ** attempting to boot too often. The master host should then grab + ** the RTA and make it its own. + */ + p->RIOBooting++; + RIOQueueCmdBlk(HostP, Rup, CmdBlkP); + return 1; + } + + /* + ** It is a request for boot data. + */ + sequence = readw(&PktCmdP->Sequence); + + rio_dprintk(RIO_DEBUG_BOOT, "Boot block %d on Host %Zd Rup%d\n", sequence, HostP - p->RIOHosts, Rup); + + if (sequence >= p->RIONumBootPkts) { + rio_dprintk(RIO_DEBUG_BOOT, "Got a request for packet %d, max is %d\n", sequence, p->RIONumBootPkts); + } + + PktReplyP->Sequence = sequence; + memcpy(PktReplyP->BootData, p->RIOBootPackets[p->RIONumBootPkts - sequence - 1], RTA_BOOT_DATA_SIZE); + CmdBlkP->Packet.len = PKT_MAX_DATA_LEN; + RIOQueueCmdBlk(HostP, Rup, CmdBlkP); + return 1; +} + +/** + * RIOBootComplete - RTA boot is done + * @p: RIO we are working with + * @HostP: Host structure + * @Rup: RUP being used + * @PktCmdP: Packet command that was used + * + * This function is called when an RTA been booted. + * If booted by a host, HostP->HostUniqueNum is the booting host. + * If booted by an RTA, HostP->Mapping[Rup].RtaUniqueNum is the booting RTA. + * RtaUniq is the booted RTA. + */ + +static int RIOBootComplete(struct rio_info *p, struct Host *HostP, unsigned int Rup, struct PktCmd __iomem *PktCmdP) +{ + struct Map *MapP = NULL; + struct Map *MapP2 = NULL; + int Flag; + int found; + int host, rta; + int EmptySlot = -1; + int entry, entry2; + char *MyType, *MyName; + unsigned int MyLink; + unsigned short RtaType; + u32 RtaUniq = (readb(&PktCmdP->UniqNum[0])) + (readb(&PktCmdP->UniqNum[1]) << 8) + (readb(&PktCmdP->UniqNum[2]) << 16) + (readb(&PktCmdP->UniqNum[3]) << 24); + + p->RIOBooting = 0; + + rio_dprintk(RIO_DEBUG_BOOT, "RTA Boot completed - BootInProgress now %d\n", p->RIOBooting); + + /* + ** Determine type of unit (16/8 port RTA). + */ + + RtaType = GetUnitType(RtaUniq); + if (Rup >= (unsigned short) MAX_RUP) + rio_dprintk(RIO_DEBUG_BOOT, "RIO: Host %s has booted an RTA(%d) on link %c\n", HostP->Name, 8 * RtaType, readb(&PktCmdP->LinkNum) + 'A'); + else + rio_dprintk(RIO_DEBUG_BOOT, "RIO: RTA %s has booted an RTA(%d) on link %c\n", HostP->Mapping[Rup].Name, 8 * RtaType, readb(&PktCmdP->LinkNum) + 'A'); + + rio_dprintk(RIO_DEBUG_BOOT, "UniqNum is 0x%x\n", RtaUniq); + + if (RtaUniq == 0x00000000 || RtaUniq == 0xffffffff) { + rio_dprintk(RIO_DEBUG_BOOT, "Illegal RTA Uniq Number\n"); + return 1; + } + + /* + ** If this RTA has just booted an RTA which doesn't belong to this + ** system, or the system is in slave mode, do not attempt to create + ** a new table entry for it. + */ + + if (!RIOBootOk(p, HostP, RtaUniq)) { + MyLink = readb(&PktCmdP->LinkNum); + if (Rup < (unsigned short) MAX_RUP) { + /* + ** RtaUniq was clone booted (by this RTA). Instruct this RTA + ** to hold off further attempts to boot on this link for 30 + ** seconds. + */ + if (RIOSuspendBootRta(HostP, HostP->Mapping[Rup].ID, MyLink)) { + rio_dprintk(RIO_DEBUG_BOOT, "RTA failed to suspend booting on link %c\n", 'A' + MyLink); + } + } else + /* + ** RtaUniq was booted by this host. Set the booting link + ** to hold off for 30 seconds to give another unit a + ** chance to boot it. + */ + writew(30, &HostP->LinkStrP[MyLink].WaitNoBoot); + rio_dprintk(RIO_DEBUG_BOOT, "RTA %x not owned - suspend booting down link %c on unit %x\n", RtaUniq, 'A' + MyLink, HostP->Mapping[Rup].RtaUniqueNum); + return 1; + } + + /* + ** Check for a SLOT_IN_USE entry for this RTA attached to the + ** current host card in the driver table. + ** + ** If it exists, make a note that we have booted it. Other parts of + ** the driver are interested in this information at a later date, + ** in particular when the booting RTA asks for an ID for this unit, + ** we must have set the BOOTED flag, and the NEWBOOT flag is used + ** to force an open on any ports that where previously open on this + ** unit. + */ + for (entry = 0; entry < MAX_RUP; entry++) { + unsigned int sysport; + + if ((HostP->Mapping[entry].Flags & SLOT_IN_USE) && (HostP->Mapping[entry].RtaUniqueNum == RtaUniq)) { + HostP->Mapping[entry].Flags |= RTA_BOOTED | RTA_NEWBOOT; + if ((sysport = HostP->Mapping[entry].SysPort) != NO_PORT) { + if (sysport < p->RIOFirstPortsBooted) + p->RIOFirstPortsBooted = sysport; + if (sysport > p->RIOLastPortsBooted) + p->RIOLastPortsBooted = sysport; + /* + ** For a 16 port RTA, check the second bank of 8 ports + */ + if (RtaType == TYPE_RTA16) { + entry2 = HostP->Mapping[entry].ID2 - 1; + HostP->Mapping[entry2].Flags |= RTA_BOOTED | RTA_NEWBOOT; + sysport = HostP->Mapping[entry2].SysPort; + if (sysport < p->RIOFirstPortsBooted) + p->RIOFirstPortsBooted = sysport; + if (sysport > p->RIOLastPortsBooted) + p->RIOLastPortsBooted = sysport; + } + } + if (RtaType == TYPE_RTA16) + rio_dprintk(RIO_DEBUG_BOOT, "RTA will be given IDs %d+%d\n", entry + 1, entry2 + 1); + else + rio_dprintk(RIO_DEBUG_BOOT, "RTA will be given ID %d\n", entry + 1); + return 1; + } + } + + rio_dprintk(RIO_DEBUG_BOOT, "RTA not configured for this host\n"); + + if (Rup >= (unsigned short) MAX_RUP) { + /* + ** It was a host that did the booting + */ + MyType = "Host"; + MyName = HostP->Name; + } else { + /* + ** It was an RTA that did the booting + */ + MyType = "RTA"; + MyName = HostP->Mapping[Rup].Name; + } + MyLink = readb(&PktCmdP->LinkNum); + + /* + ** There is no SLOT_IN_USE entry for this RTA attached to the current + ** host card in the driver table. + ** + ** Check for a SLOT_TENTATIVE entry for this RTA attached to the + ** current host card in the driver table. + ** + ** If we find one, then we re-use that slot. + */ + for (entry = 0; entry < MAX_RUP; entry++) { + if ((HostP->Mapping[entry].Flags & SLOT_TENTATIVE) && (HostP->Mapping[entry].RtaUniqueNum == RtaUniq)) { + if (RtaType == TYPE_RTA16) { + entry2 = HostP->Mapping[entry].ID2 - 1; + if ((HostP->Mapping[entry2].Flags & SLOT_TENTATIVE) && (HostP->Mapping[entry2].RtaUniqueNum == RtaUniq)) + rio_dprintk(RIO_DEBUG_BOOT, "Found previous tentative slots (%d+%d)\n", entry, entry2); + else + continue; + } else + rio_dprintk(RIO_DEBUG_BOOT, "Found previous tentative slot (%d)\n", entry); + if (!p->RIONoMessage) + printk("RTA connected to %s '%s' (%c) not configured.\n", MyType, MyName, MyLink + 'A'); + return 1; + } + } + + /* + ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA + ** attached to the current host card in the driver table. + ** + ** Check if there is a SLOT_IN_USE or SLOT_TENTATIVE entry on another + ** host for this RTA in the driver table. + ** + ** For a SLOT_IN_USE entry on another host, we need to delete the RTA + ** entry from the other host and add it to this host (using some of + ** the functions from table.c which do this). + ** For a SLOT_TENTATIVE entry on another host, we must cope with the + ** following scenario: + ** + ** + Plug 8 port RTA into host A. (This creates SLOT_TENTATIVE entry + ** in table) + ** + Unplug RTA and plug into host B. (We now have 2 SLOT_TENTATIVE + ** entries) + ** + Configure RTA on host B. (This slot now becomes SLOT_IN_USE) + ** + Unplug RTA and plug back into host A. + ** + Configure RTA on host A. We now have the same RTA configured + ** with different ports on two different hosts. + */ + rio_dprintk(RIO_DEBUG_BOOT, "Have we seen RTA %x before?\n", RtaUniq); + found = 0; + Flag = 0; /* Convince the compiler this variable is initialized */ + for (host = 0; !found && (host < p->RIONumHosts); host++) { + for (rta = 0; rta < MAX_RUP; rta++) { + if ((p->RIOHosts[host].Mapping[rta].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) && (p->RIOHosts[host].Mapping[rta].RtaUniqueNum == RtaUniq)) { + Flag = p->RIOHosts[host].Mapping[rta].Flags; + MapP = &p->RIOHosts[host].Mapping[rta]; + if (RtaType == TYPE_RTA16) { + MapP2 = &p->RIOHosts[host].Mapping[MapP->ID2 - 1]; + rio_dprintk(RIO_DEBUG_BOOT, "This RTA is units %d+%d from host %s\n", rta + 1, MapP->ID2, p->RIOHosts[host].Name); + } else + rio_dprintk(RIO_DEBUG_BOOT, "This RTA is unit %d from host %s\n", rta + 1, p->RIOHosts[host].Name); + found = 1; + break; + } + } + } + + /* + ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA + ** attached to the current host card in the driver table. + ** + ** If we have not found a SLOT_IN_USE or SLOT_TENTATIVE entry on + ** another host for this RTA in the driver table... + ** + ** Check for a SLOT_IN_USE entry for this RTA in the config table. + */ + if (!MapP) { + rio_dprintk(RIO_DEBUG_BOOT, "Look for RTA %x in RIOSavedTable\n", RtaUniq); + for (rta = 0; rta < TOTAL_MAP_ENTRIES; rta++) { + rio_dprintk(RIO_DEBUG_BOOT, "Check table entry %d (%x)", rta, p->RIOSavedTable[rta].RtaUniqueNum); + + if ((p->RIOSavedTable[rta].Flags & SLOT_IN_USE) && (p->RIOSavedTable[rta].RtaUniqueNum == RtaUniq)) { + MapP = &p->RIOSavedTable[rta]; + Flag = p->RIOSavedTable[rta].Flags; + if (RtaType == TYPE_RTA16) { + for (entry2 = rta + 1; entry2 < TOTAL_MAP_ENTRIES; entry2++) { + if (p->RIOSavedTable[entry2].RtaUniqueNum == RtaUniq) + break; + } + MapP2 = &p->RIOSavedTable[entry2]; + rio_dprintk(RIO_DEBUG_BOOT, "This RTA is from table entries %d+%d\n", rta, entry2); + } else + rio_dprintk(RIO_DEBUG_BOOT, "This RTA is from table entry %d\n", rta); + break; + } + } + } + + /* + ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA + ** attached to the current host card in the driver table. + ** + ** We may have found a SLOT_IN_USE entry on another host for this + ** RTA in the config table, or a SLOT_IN_USE or SLOT_TENTATIVE entry + ** on another host for this RTA in the driver table. + ** + ** Check the driver table for room to fit this newly discovered RTA. + ** RIOFindFreeID() first looks for free slots and if it does not + ** find any free slots it will then attempt to oust any + ** tentative entry in the table. + */ + EmptySlot = 1; + if (RtaType == TYPE_RTA16) { + if (RIOFindFreeID(p, HostP, &entry, &entry2) == 0) { + RIODefaultName(p, HostP, entry); + rio_fill_host_slot(entry, entry2, RtaUniq, HostP); + EmptySlot = 0; + } + } else { + if (RIOFindFreeID(p, HostP, &entry, NULL) == 0) { + RIODefaultName(p, HostP, entry); + rio_fill_host_slot(entry, 0, RtaUniq, HostP); + EmptySlot = 0; + } + } + + /* + ** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA + ** attached to the current host card in the driver table. + ** + ** If we found a SLOT_IN_USE entry on another host for this + ** RTA in the config or driver table, and there are enough free + ** slots in the driver table, then we need to move it over and + ** delete it from the other host. + ** If we found a SLOT_TENTATIVE entry on another host for this + ** RTA in the driver table, just delete the other host entry. + */ + if (EmptySlot == 0) { + if (MapP) { + if (Flag & SLOT_IN_USE) { + rio_dprintk(RIO_DEBUG_BOOT, "This RTA configured on another host - move entry to current host (1)\n"); + HostP->Mapping[entry].SysPort = MapP->SysPort; + memcpy(HostP->Mapping[entry].Name, MapP->Name, MAX_NAME_LEN); + HostP->Mapping[entry].Flags = SLOT_IN_USE | RTA_BOOTED | RTA_NEWBOOT; + RIOReMapPorts(p, HostP, &HostP->Mapping[entry]); + if (HostP->Mapping[entry].SysPort < p->RIOFirstPortsBooted) + p->RIOFirstPortsBooted = HostP->Mapping[entry].SysPort; + if (HostP->Mapping[entry].SysPort > p->RIOLastPortsBooted) + p->RIOLastPortsBooted = HostP->Mapping[entry].SysPort; + rio_dprintk(RIO_DEBUG_BOOT, "SysPort %d, Name %s\n", (int) MapP->SysPort, MapP->Name); + } else { + rio_dprintk(RIO_DEBUG_BOOT, "This RTA has a tentative entry on another host - delete that entry (1)\n"); + HostP->Mapping[entry].Flags = SLOT_TENTATIVE | RTA_BOOTED | RTA_NEWBOOT; + } + if (RtaType == TYPE_RTA16) { + if (Flag & SLOT_IN_USE) { + HostP->Mapping[entry2].Flags = SLOT_IN_USE | RTA_BOOTED | RTA_NEWBOOT | RTA16_SECOND_SLOT; + HostP->Mapping[entry2].SysPort = MapP2->SysPort; + /* + ** Map second block of ttys for 16 port RTA + */ + RIOReMapPorts(p, HostP, &HostP->Mapping[entry2]); + if (HostP->Mapping[entry2].SysPort < p->RIOFirstPortsBooted) + p->RIOFirstPortsBooted = HostP->Mapping[entry2].SysPort; + if (HostP->Mapping[entry2].SysPort > p->RIOLastPortsBooted) + p->RIOLastPortsBooted = HostP->Mapping[entry2].SysPort; + rio_dprintk(RIO_DEBUG_BOOT, "SysPort %d, Name %s\n", (int) HostP->Mapping[entry2].SysPort, HostP->Mapping[entry].Name); + } else + HostP->Mapping[entry2].Flags = SLOT_TENTATIVE | RTA_BOOTED | RTA_NEWBOOT | RTA16_SECOND_SLOT; + memset(MapP2, 0, sizeof(struct Map)); + } + memset(MapP, 0, sizeof(struct Map)); + if (!p->RIONoMessage) + printk("An orphaned RTA has been adopted by %s '%s' (%c).\n", MyType, MyName, MyLink + 'A'); + } else if (!p->RIONoMessage) + printk("RTA connected to %s '%s' (%c) not configured.\n", MyType, MyName, MyLink + 'A'); + RIOSetChange(p); + return 1; + } + + /* + ** There is no room in the driver table to make an entry for the + ** booted RTA. Keep a note of its Uniq Num in the overflow table, + ** so we can ignore it's ID requests. + */ + if (!p->RIONoMessage) + printk("The RTA connected to %s '%s' (%c) cannot be configured. You cannot configure more than 128 ports to one host card.\n", MyType, MyName, MyLink + 'A'); + for (entry = 0; entry < HostP->NumExtraBooted; entry++) { + if (HostP->ExtraUnits[entry] == RtaUniq) { + /* + ** already got it! + */ + return 1; + } + } + /* + ** If there is room, add the unit to the list of extras + */ + if (HostP->NumExtraBooted < MAX_EXTRA_UNITS) + HostP->ExtraUnits[HostP->NumExtraBooted++] = RtaUniq; + return 1; +} + + +/* +** If the RTA or its host appears in the RIOBindTab[] structure then +** we mustn't boot the RTA and should return 0. +** This operation is slightly different from the other drivers for RIO +** in that this is designed to work with the new utilities +** not config.rio and is FAR SIMPLER. +** We no longer support the RIOBootMode variable. It is all done from the +** "boot/noboot" field in the rio.cf file. +*/ +int RIOBootOk(struct rio_info *p, struct Host *HostP, unsigned long RtaUniq) +{ + int Entry; + unsigned int HostUniq = HostP->UniqueNum; + + /* + ** Search bindings table for RTA or its parent. + ** If it exists, return 0, else 1. + */ + for (Entry = 0; (Entry < MAX_RTA_BINDINGS) && (p->RIOBindTab[Entry] != 0); Entry++) { + if ((p->RIOBindTab[Entry] == HostUniq) || (p->RIOBindTab[Entry] == RtaUniq)) + return 0; + } + return 1; +} + +/* +** Make an empty slot tentative. If this is a 16 port RTA, make both +** slots tentative, and the second one RTA_SECOND_SLOT as well. +*/ + +void rio_fill_host_slot(int entry, int entry2, unsigned int rta_uniq, struct Host *host) +{ + int link; + + rio_dprintk(RIO_DEBUG_BOOT, "rio_fill_host_slot(%d, %d, 0x%x...)\n", entry, entry2, rta_uniq); + + host->Mapping[entry].Flags = (RTA_BOOTED | RTA_NEWBOOT | SLOT_TENTATIVE); + host->Mapping[entry].SysPort = NO_PORT; + host->Mapping[entry].RtaUniqueNum = rta_uniq; + host->Mapping[entry].HostUniqueNum = host->UniqueNum; + host->Mapping[entry].ID = entry + 1; + host->Mapping[entry].ID2 = 0; + if (entry2) { + host->Mapping[entry2].Flags = (RTA_BOOTED | RTA_NEWBOOT | SLOT_TENTATIVE | RTA16_SECOND_SLOT); + host->Mapping[entry2].SysPort = NO_PORT; + host->Mapping[entry2].RtaUniqueNum = rta_uniq; + host->Mapping[entry2].HostUniqueNum = host->UniqueNum; + host->Mapping[entry2].Name[0] = '\0'; + host->Mapping[entry2].ID = entry2 + 1; + host->Mapping[entry2].ID2 = entry + 1; + host->Mapping[entry].ID2 = entry2 + 1; + } + /* + ** Must set these up, so that utilities show + ** topology of 16 port RTAs correctly + */ + for (link = 0; link < LINKS_PER_UNIT; link++) { + host->Mapping[entry].Topology[link].Unit = ROUTE_DISCONNECT; + host->Mapping[entry].Topology[link].Link = NO_LINK; + if (entry2) { + host->Mapping[entry2].Topology[link].Unit = ROUTE_DISCONNECT; + host->Mapping[entry2].Topology[link].Link = NO_LINK; + } + } +} diff --git a/drivers/staging/generic_serial/rio/riocmd.c b/drivers/staging/generic_serial/rio/riocmd.c new file mode 100644 index 000000000000..f121357e5af0 --- /dev/null +++ b/drivers/staging/generic_serial/rio/riocmd.c @@ -0,0 +1,939 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** ported from the existing SCO driver source +** + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : riocmd.c +** SID : 1.2 +** Last Modified : 11/6/98 10:33:41 +** Retrieved : 11/6/98 10:33:49 +** +** ident @(#)riocmd.c 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" + + +static struct IdentifyRta IdRta; +static struct KillNeighbour KillUnit; + +int RIOFoadRta(struct Host *HostP, struct Map *MapP) +{ + struct CmdBlk *CmdBlkP; + + rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA\n"); + + CmdBlkP = RIOGetCmdBlk(); + + if (!CmdBlkP) { + rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: GetCmdBlk failed\n"); + return -ENXIO; + } + + CmdBlkP->Packet.dest_unit = MapP->ID; + CmdBlkP->Packet.dest_port = BOOT_RUP; + CmdBlkP->Packet.src_unit = 0; + CmdBlkP->Packet.src_port = BOOT_RUP; + CmdBlkP->Packet.len = 0x84; + CmdBlkP->Packet.data[0] = IFOAD; + CmdBlkP->Packet.data[1] = 0; + CmdBlkP->Packet.data[2] = IFOAD_MAGIC & 0xFF; + CmdBlkP->Packet.data[3] = (IFOAD_MAGIC >> 8) & 0xFF; + + if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: Failed to queue foad command\n"); + return -EIO; + } + return 0; +} + +int RIOZombieRta(struct Host *HostP, struct Map *MapP) +{ + struct CmdBlk *CmdBlkP; + + rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA\n"); + + CmdBlkP = RIOGetCmdBlk(); + + if (!CmdBlkP) { + rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: GetCmdBlk failed\n"); + return -ENXIO; + } + + CmdBlkP->Packet.dest_unit = MapP->ID; + CmdBlkP->Packet.dest_port = BOOT_RUP; + CmdBlkP->Packet.src_unit = 0; + CmdBlkP->Packet.src_port = BOOT_RUP; + CmdBlkP->Packet.len = 0x84; + CmdBlkP->Packet.data[0] = ZOMBIE; + CmdBlkP->Packet.data[1] = 0; + CmdBlkP->Packet.data[2] = ZOMBIE_MAGIC & 0xFF; + CmdBlkP->Packet.data[3] = (ZOMBIE_MAGIC >> 8) & 0xFF; + + if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: Failed to queue zombie command\n"); + return -EIO; + } + return 0; +} + +int RIOCommandRta(struct rio_info *p, unsigned long RtaUnique, int (*func) (struct Host * HostP, struct Map * MapP)) +{ + unsigned int Host; + + rio_dprintk(RIO_DEBUG_CMD, "Command RTA 0x%lx func %p\n", RtaUnique, func); + + if (!RtaUnique) + return (0); + + for (Host = 0; Host < p->RIONumHosts; Host++) { + unsigned int Rta; + struct Host *HostP = &p->RIOHosts[Host]; + + for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { + struct Map *MapP = &HostP->Mapping[Rta]; + + if (MapP->RtaUniqueNum == RtaUnique) { + uint Link; + + /* + ** now, lets just check we have a route to it... + ** IF the routing stuff is working, then one of the + ** topology entries for this unit will have a legit + ** route *somewhere*. We care not where - if its got + ** any connections, we can get to it. + */ + for (Link = 0; Link < LINKS_PER_UNIT; Link++) { + if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { + /* + ** Its worth trying the operation... + */ + return (*func) (HostP, MapP); + } + } + } + } + } + return -ENXIO; +} + + +int RIOIdentifyRta(struct rio_info *p, void __user * arg) +{ + unsigned int Host; + + if (copy_from_user(&IdRta, arg, sizeof(IdRta))) { + rio_dprintk(RIO_DEBUG_CMD, "RIO_IDENTIFY_RTA copy failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + + for (Host = 0; Host < p->RIONumHosts; Host++) { + unsigned int Rta; + struct Host *HostP = &p->RIOHosts[Host]; + + for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { + struct Map *MapP = &HostP->Mapping[Rta]; + + if (MapP->RtaUniqueNum == IdRta.RtaUnique) { + uint Link; + /* + ** now, lets just check we have a route to it... + ** IF the routing stuff is working, then one of the + ** topology entries for this unit will have a legit + ** route *somewhere*. We care not where - if its got + ** any connections, we can get to it. + */ + for (Link = 0; Link < LINKS_PER_UNIT; Link++) { + if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { + /* + ** Its worth trying the operation... + */ + struct CmdBlk *CmdBlkP; + + rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA\n"); + + CmdBlkP = RIOGetCmdBlk(); + + if (!CmdBlkP) { + rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: GetCmdBlk failed\n"); + return -ENXIO; + } + + CmdBlkP->Packet.dest_unit = MapP->ID; + CmdBlkP->Packet.dest_port = BOOT_RUP; + CmdBlkP->Packet.src_unit = 0; + CmdBlkP->Packet.src_port = BOOT_RUP; + CmdBlkP->Packet.len = 0x84; + CmdBlkP->Packet.data[0] = IDENTIFY; + CmdBlkP->Packet.data[1] = 0; + CmdBlkP->Packet.data[2] = IdRta.ID; + + if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: Failed to queue command\n"); + return -EIO; + } + return 0; + } + } + } + } + } + return -ENOENT; +} + + +int RIOKillNeighbour(struct rio_info *p, void __user * arg) +{ + uint Host; + uint ID; + struct Host *HostP; + struct CmdBlk *CmdBlkP; + + rio_dprintk(RIO_DEBUG_CMD, "KILL HOST NEIGHBOUR\n"); + + if (copy_from_user(&KillUnit, arg, sizeof(KillUnit))) { + rio_dprintk(RIO_DEBUG_CMD, "RIO_KILL_NEIGHBOUR copy failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + + if (KillUnit.Link > 3) + return -ENXIO; + + CmdBlkP = RIOGetCmdBlk(); + + if (!CmdBlkP) { + rio_dprintk(RIO_DEBUG_CMD, "UFOAD: GetCmdBlk failed\n"); + return -ENXIO; + } + + CmdBlkP->Packet.dest_unit = 0; + CmdBlkP->Packet.src_unit = 0; + CmdBlkP->Packet.dest_port = BOOT_RUP; + CmdBlkP->Packet.src_port = BOOT_RUP; + CmdBlkP->Packet.len = 0x84; + CmdBlkP->Packet.data[0] = UFOAD; + CmdBlkP->Packet.data[1] = KillUnit.Link; + CmdBlkP->Packet.data[2] = UFOAD_MAGIC & 0xFF; + CmdBlkP->Packet.data[3] = (UFOAD_MAGIC >> 8) & 0xFF; + + for (Host = 0; Host < p->RIONumHosts; Host++) { + ID = 0; + HostP = &p->RIOHosts[Host]; + + if (HostP->UniqueNum == KillUnit.UniqueNum) { + if (RIOQueueCmdBlk(HostP, RTAS_PER_HOST + KillUnit.Link, CmdBlkP) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); + return -EIO; + } + return 0; + } + + for (ID = 0; ID < RTAS_PER_HOST; ID++) { + if (HostP->Mapping[ID].RtaUniqueNum == KillUnit.UniqueNum) { + CmdBlkP->Packet.dest_unit = ID + 1; + if (RIOQueueCmdBlk(HostP, ID, CmdBlkP) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); + return -EIO; + } + return 0; + } + } + } + RIOFreeCmdBlk(CmdBlkP); + return -ENXIO; +} + +int RIOSuspendBootRta(struct Host *HostP, int ID, int Link) +{ + struct CmdBlk *CmdBlkP; + + rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA ID %d, link %c\n", ID, 'A' + Link); + + CmdBlkP = RIOGetCmdBlk(); + + if (!CmdBlkP) { + rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: GetCmdBlk failed\n"); + return -ENXIO; + } + + CmdBlkP->Packet.dest_unit = ID; + CmdBlkP->Packet.dest_port = BOOT_RUP; + CmdBlkP->Packet.src_unit = 0; + CmdBlkP->Packet.src_port = BOOT_RUP; + CmdBlkP->Packet.len = 0x84; + CmdBlkP->Packet.data[0] = IWAIT; + CmdBlkP->Packet.data[1] = Link; + CmdBlkP->Packet.data[2] = IWAIT_MAGIC & 0xFF; + CmdBlkP->Packet.data[3] = (IWAIT_MAGIC >> 8) & 0xFF; + + if (RIOQueueCmdBlk(HostP, ID - 1, CmdBlkP) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: Failed to queue iwait command\n"); + return -EIO; + } + return 0; +} + +int RIOFoadWakeup(struct rio_info *p) +{ + int port; + struct Port *PortP; + unsigned long flags; + + for (port = 0; port < RIO_PORTS; port++) { + PortP = p->RIOPortp[port]; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->Config = 0; + PortP->State = 0; + PortP->InUse = NOT_INUSE; + PortP->PortState = 0; + PortP->FlushCmdBodge = 0; + PortP->ModemLines = 0; + PortP->ModemState = 0; + PortP->CookMode = 0; + PortP->ParamSem = 0; + PortP->Mapped = 0; + PortP->WflushFlag = 0; + PortP->MagicFlags = 0; + PortP->RxDataStart = 0; + PortP->TxBufferIn = 0; + PortP->TxBufferOut = 0; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + } + return (0); +} + +/* +** Incoming command on the COMMAND_RUP to be processed. +*/ +static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struct PKT __iomem *PacketP) +{ + struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *)PacketP->data; + struct Port *PortP; + struct UnixRup *UnixRupP; + unsigned short SysPort; + unsigned short ReportedModemStatus; + unsigned short rup; + unsigned short subCommand; + unsigned long flags; + + func_enter(); + + /* + ** 16 port RTA note: + ** Command rup packets coming from the RTA will have pkt->data[1] (which + ** translates to PktCmdP->PhbNum) set to the host port number for the + ** particular unit. To access the correct BaseSysPort for a 16 port RTA, + ** we can use PhbNum to get the rup number for the appropriate 8 port + ** block (for the first block, this should be equal to 'Rup'). + */ + rup = readb(&PktCmdP->PhbNum) / (unsigned short) PORTS_PER_RTA; + UnixRupP = &HostP->UnixRups[rup]; + SysPort = UnixRupP->BaseSysPort + (readb(&PktCmdP->PhbNum) % (unsigned short) PORTS_PER_RTA); + rio_dprintk(RIO_DEBUG_CMD, "Command on rup %d, port %d\n", rup, SysPort); + + if (UnixRupP->BaseSysPort == NO_PORT) { + rio_dprintk(RIO_DEBUG_CMD, "OBSCURE ERROR!\n"); + rio_dprintk(RIO_DEBUG_CMD, "Diagnostics follow. Please WRITE THESE DOWN and report them to Specialix Technical Support\n"); + rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Host number %Zd, name ``%s''\n", HostP - p->RIOHosts, HostP->Name); + rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Rup number 0x%x\n", rup); + + if (Rup < (unsigned short) MAX_RUP) { + rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for RTA ``%s''\n", HostP->Mapping[Rup].Name); + } else + rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for link ``%c'' of host ``%s''\n", ('A' + Rup - MAX_RUP), HostP->Name); + + rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Destination 0x%x:0x%x\n", readb(&PacketP->dest_unit), readb(&PacketP->dest_port)); + rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Source 0x%x:0x%x\n", readb(&PacketP->src_unit), readb(&PacketP->src_port)); + rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Length 0x%x (%d)\n", readb(&PacketP->len), readb(&PacketP->len)); + rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Control 0x%x (%d)\n", readb(&PacketP->control), readb(&PacketP->control)); + rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Check 0x%x (%d)\n", readw(&PacketP->csum), readw(&PacketP->csum)); + rio_dprintk(RIO_DEBUG_CMD, "COMMAND information: Host Port Number 0x%x, " "Command Code 0x%x\n", readb(&PktCmdP->PhbNum), readb(&PktCmdP->Command)); + return 1; + } + PortP = p->RIOPortp[SysPort]; + rio_spin_lock_irqsave(&PortP->portSem, flags); + switch (readb(&PktCmdP->Command)) { + case RIOC_BREAK_RECEIVED: + rio_dprintk(RIO_DEBUG_CMD, "Received a break!\n"); + /* If the current line disc. is not multi-threading and + the current processor is not the default, reset rup_intr + and return 0 to ensure that the command packet is + not freed. */ + /* Call tmgr HANGUP HERE */ + /* Fix this later when every thing works !!!! RAMRAJ */ + gs_got_break(&PortP->gs); + break; + + case RIOC_COMPLETE: + rio_dprintk(RIO_DEBUG_CMD, "Command complete on phb %d host %Zd\n", readb(&PktCmdP->PhbNum), HostP - p->RIOHosts); + subCommand = 1; + switch (readb(&PktCmdP->SubCommand)) { + case RIOC_MEMDUMP: + rio_dprintk(RIO_DEBUG_CMD, "Memory dump cmd (0x%x) from addr 0x%x\n", readb(&PktCmdP->SubCommand), readw(&PktCmdP->SubAddr)); + break; + case RIOC_READ_REGISTER: + rio_dprintk(RIO_DEBUG_CMD, "Read register (0x%x)\n", readw(&PktCmdP->SubAddr)); + p->CdRegister = (readb(&PktCmdP->ModemStatus) & RIOC_MSVR1_HOST); + break; + default: + subCommand = 0; + break; + } + if (subCommand) + break; + rio_dprintk(RIO_DEBUG_CMD, "New status is 0x%x was 0x%x\n", readb(&PktCmdP->PortStatus), PortP->PortState); + if (PortP->PortState != readb(&PktCmdP->PortStatus)) { + rio_dprintk(RIO_DEBUG_CMD, "Mark status & wakeup\n"); + PortP->PortState = readb(&PktCmdP->PortStatus); + /* What should we do here ... + wakeup( &PortP->PortState ); + */ + } else + rio_dprintk(RIO_DEBUG_CMD, "No change\n"); + + /* FALLTHROUGH */ + case RIOC_MODEM_STATUS: + /* + ** Knock out the tbusy and tstop bits, as these are not relevant + ** to the check for modem status change (they're just there because + ** it's a convenient place to put them!). + */ + ReportedModemStatus = readb(&PktCmdP->ModemStatus); + if ((PortP->ModemState & RIOC_MSVR1_HOST) == + (ReportedModemStatus & RIOC_MSVR1_HOST)) { + rio_dprintk(RIO_DEBUG_CMD, "Modem status unchanged 0x%x\n", PortP->ModemState); + /* + ** Update ModemState just in case tbusy or tstop states have + ** changed. + */ + PortP->ModemState = ReportedModemStatus; + } else { + rio_dprintk(RIO_DEBUG_CMD, "Modem status change from 0x%x to 0x%x\n", PortP->ModemState, ReportedModemStatus); + PortP->ModemState = ReportedModemStatus; +#ifdef MODEM_SUPPORT + if (PortP->Mapped) { + /***********************************************************\ + ************************************************************* + *** *** + *** M O D E M S T A T E C H A N G E *** + *** *** + ************************************************************* + \***********************************************************/ + /* + ** If the device is a modem, then check the modem + ** carrier. + */ + if (PortP->gs.port.tty == NULL) + break; + if (PortP->gs.port.tty->termios == NULL) + break; + + if (!(PortP->gs.port.tty->termios->c_cflag & CLOCAL) && ((PortP->State & (RIO_MOPEN | RIO_WOPEN)))) { + + rio_dprintk(RIO_DEBUG_CMD, "Is there a Carrier?\n"); + /* + ** Is there a carrier? + */ + if (PortP->ModemState & RIOC_MSVR1_CD) { + /* + ** Has carrier just appeared? + */ + if (!(PortP->State & RIO_CARR_ON)) { + rio_dprintk(RIO_DEBUG_CMD, "Carrier just came up.\n"); + PortP->State |= RIO_CARR_ON; + /* + ** wakeup anyone in WOPEN + */ + if (PortP->State & (PORT_ISOPEN | RIO_WOPEN)) + wake_up_interruptible(&PortP->gs.port.open_wait); + } + } else { + /* + ** Has carrier just dropped? + */ + if (PortP->State & RIO_CARR_ON) { + if (PortP->State & (PORT_ISOPEN | RIO_WOPEN | RIO_MOPEN)) + tty_hangup(PortP->gs.port.tty); + PortP->State &= ~RIO_CARR_ON; + rio_dprintk(RIO_DEBUG_CMD, "Carrirer just went down\n"); + } + } + } + } +#endif + } + break; + + default: + rio_dprintk(RIO_DEBUG_CMD, "Unknown command %d on CMD_RUP of host %Zd\n", readb(&PktCmdP->Command), HostP - p->RIOHosts); + break; + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + + func_exit(); + + return 1; +} + +/* +** The command mechanism: +** Each rup has a chain of commands associated with it. +** This chain is maintained by routines in this file. +** Periodically we are called and we run a quick check of all the +** active chains to determine if there is a command to be executed, +** and if the rup is ready to accept it. +** +*/ + +/* +** Allocate an empty command block. +*/ +struct CmdBlk *RIOGetCmdBlk(void) +{ + struct CmdBlk *CmdBlkP; + + CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC); + return CmdBlkP; +} + +/* +** Return a block to the head of the free list. +*/ +void RIOFreeCmdBlk(struct CmdBlk *CmdBlkP) +{ + kfree(CmdBlkP); +} + +/* +** attach a command block to the list of commands to be performed for +** a given rup. +*/ +int RIOQueueCmdBlk(struct Host *HostP, uint Rup, struct CmdBlk *CmdBlkP) +{ + struct CmdBlk **Base; + struct UnixRup *UnixRupP; + unsigned long flags; + + if (Rup >= (unsigned short) (MAX_RUP + LINKS_PER_UNIT)) { + rio_dprintk(RIO_DEBUG_CMD, "Illegal rup number %d in RIOQueueCmdBlk\n", Rup); + RIOFreeCmdBlk(CmdBlkP); + return RIO_FAIL; + } + + UnixRupP = &HostP->UnixRups[Rup]; + + rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); + + /* + ** If the RUP is currently inactive, then put the request + ** straight on the RUP.... + */ + if ((UnixRupP->CmdsWaitingP == NULL) && (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) && (CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) + : 1)) { + rio_dprintk(RIO_DEBUG_CMD, "RUP inactive-placing command straight on. Cmd byte is 0x%x\n", CmdBlkP->Packet.data[0]); + + /* + ** Whammy! blat that pack! + */ + HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT)); + + /* + ** place command packet on the pending position. + */ + UnixRupP->CmdPendingP = CmdBlkP; + + /* + ** set the command register + */ + writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); + + rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); + + return 0; + } + rio_dprintk(RIO_DEBUG_CMD, "RUP active - en-queing\n"); + + if (UnixRupP->CmdsWaitingP != NULL) + rio_dprintk(RIO_DEBUG_CMD, "Rup active - command waiting\n"); + if (UnixRupP->CmdPendingP != NULL) + rio_dprintk(RIO_DEBUG_CMD, "Rup active - command pending\n"); + if (readw(&UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE) + rio_dprintk(RIO_DEBUG_CMD, "Rup active - command rup not ready\n"); + + Base = &UnixRupP->CmdsWaitingP; + + rio_dprintk(RIO_DEBUG_CMD, "First try to queue cmdblk %p at %p\n", CmdBlkP, Base); + + while (*Base) { + rio_dprintk(RIO_DEBUG_CMD, "Command cmdblk %p here\n", *Base); + Base = &((*Base)->NextP); + rio_dprintk(RIO_DEBUG_CMD, "Now try to queue cmd cmdblk %p at %p\n", CmdBlkP, Base); + } + + rio_dprintk(RIO_DEBUG_CMD, "Will queue cmdblk %p at %p\n", CmdBlkP, Base); + + *Base = CmdBlkP; + + CmdBlkP->NextP = NULL; + + rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); + + return 0; +} + +/* +** Here we go - if there is an empty rup, fill it! +** must be called at splrio() or higher. +*/ +void RIOPollHostCommands(struct rio_info *p, struct Host *HostP) +{ + struct CmdBlk *CmdBlkP; + struct UnixRup *UnixRupP; + struct PKT __iomem *PacketP; + unsigned short Rup; + unsigned long flags; + + + Rup = MAX_RUP + LINKS_PER_UNIT; + + do { /* do this loop for each RUP */ + /* + ** locate the rup we are processing & lock it + */ + UnixRupP = &HostP->UnixRups[--Rup]; + + spin_lock_irqsave(&UnixRupP->RupLock, flags); + + /* + ** First check for incoming commands: + */ + if (readw(&UnixRupP->RupP->rxcontrol) != RX_RUP_INACTIVE) { + int FreeMe; + + PacketP = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->rxpkt)); + + switch (readb(&PacketP->dest_port)) { + case BOOT_RUP: + rio_dprintk(RIO_DEBUG_CMD, "Incoming Boot %s packet '%x'\n", readb(&PacketP->len) & 0x80 ? "Command" : "Data", readb(&PacketP->data[0])); + rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); + FreeMe = RIOBootRup(p, Rup, HostP, PacketP); + rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); + break; + + case COMMAND_RUP: + /* + ** Free the RUP lock as loss of carrier causes a + ** ttyflush which will (eventually) call another + ** routine that uses the RUP lock. + */ + rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); + FreeMe = RIOCommandRup(p, Rup, HostP, PacketP); + if (readb(&PacketP->data[5]) == RIOC_MEMDUMP) { + rio_dprintk(RIO_DEBUG_CMD, "Memdump from 0x%x complete\n", readw(&(PacketP->data[6]))); + rio_memcpy_fromio(p->RIOMemDump, &(PacketP->data[8]), 32); + } + rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); + break; + + case ROUTE_RUP: + rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); + FreeMe = RIORouteRup(p, Rup, HostP, PacketP); + rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); + break; + + default: + rio_dprintk(RIO_DEBUG_CMD, "Unknown RUP %d\n", readb(&PacketP->dest_port)); + FreeMe = 1; + break; + } + + if (FreeMe) { + rio_dprintk(RIO_DEBUG_CMD, "Free processed incoming command packet\n"); + put_free_end(HostP, PacketP); + + writew(RX_RUP_INACTIVE, &UnixRupP->RupP->rxcontrol); + + if (readw(&UnixRupP->RupP->handshake) == PHB_HANDSHAKE_SET) { + rio_dprintk(RIO_DEBUG_CMD, "Handshake rup %d\n", Rup); + writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &UnixRupP->RupP->handshake); + } + } + } + + /* + ** IF a command was running on the port, + ** and it has completed, then tidy it up. + */ + if ((CmdBlkP = UnixRupP->CmdPendingP) && /* ASSIGN! */ + (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { + /* + ** we are idle. + ** there is a command in pending. + ** Therefore, this command has finished. + ** So, wakeup whoever is waiting for it (and tell them + ** what happened). + */ + if (CmdBlkP->Packet.dest_port == BOOT_RUP) + rio_dprintk(RIO_DEBUG_CMD, "Free Boot %s Command Block '%x'\n", CmdBlkP->Packet.len & 0x80 ? "Command" : "Data", CmdBlkP->Packet.data[0]); + + rio_dprintk(RIO_DEBUG_CMD, "Command %p completed\n", CmdBlkP); + + /* + ** Clear the Rup lock to prevent mutual exclusion. + */ + if (CmdBlkP->PostFuncP) { + rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); + (*CmdBlkP->PostFuncP) (CmdBlkP->PostArg, CmdBlkP); + rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); + } + + /* + ** ....clear the pending flag.... + */ + UnixRupP->CmdPendingP = NULL; + + /* + ** ....and return the command block to the freelist. + */ + RIOFreeCmdBlk(CmdBlkP); + } + + /* + ** If there is a command for this rup, and the rup + ** is idle, then process the command + */ + if ((CmdBlkP = UnixRupP->CmdsWaitingP) && /* ASSIGN! */ + (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { + /* + ** if the pre-function is non-zero, call it. + ** If it returns RIO_FAIL then don't + ** send this command yet! + */ + if (!(CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) : 1)) { + rio_dprintk(RIO_DEBUG_CMD, "Not ready to start command %p\n", CmdBlkP); + } else { + rio_dprintk(RIO_DEBUG_CMD, "Start new command %p Cmd byte is 0x%x\n", CmdBlkP, CmdBlkP->Packet.data[0]); + /* + ** Whammy! blat that pack! + */ + HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT)); + + /* + ** remove the command from the rup command queue... + */ + UnixRupP->CmdsWaitingP = CmdBlkP->NextP; + + /* + ** ...and place it on the pending position. + */ + UnixRupP->CmdPendingP = CmdBlkP; + + /* + ** set the command register + */ + writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); + + /* + ** the command block will be freed + ** when the command has been processed. + */ + } + } + spin_unlock_irqrestore(&UnixRupP->RupLock, flags); + } while (Rup); +} + +int RIOWFlushMark(unsigned long iPortP, struct CmdBlk *CmdBlkP) +{ + struct Port *PortP = (struct Port *) iPortP; + unsigned long flags; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->WflushFlag++; + PortP->MagicFlags |= MAGIC_FLUSH; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return RIOUnUse(iPortP, CmdBlkP); +} + +int RIORFlushEnable(unsigned long iPortP, struct CmdBlk *CmdBlkP) +{ + struct Port *PortP = (struct Port *) iPortP; + struct PKT __iomem *PacketP; + unsigned long flags; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + + while (can_remove_receive(&PacketP, PortP)) { + remove_receive(PortP); + put_free_end(PortP->HostP, PacketP); + } + + if (readw(&PortP->PhbP->handshake) == PHB_HANDSHAKE_SET) { + /* + ** MAGIC! (Basically, handshake the RX buffer, so that + ** the RTAs upstream can be re-enabled.) + */ + rio_dprintk(RIO_DEBUG_CMD, "Util: Set RX handshake bit\n"); + writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake); + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return RIOUnUse(iPortP, CmdBlkP); +} + +int RIOUnUse(unsigned long iPortP, struct CmdBlk *CmdBlkP) +{ + struct Port *PortP = (struct Port *) iPortP; + unsigned long flags; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + + rio_dprintk(RIO_DEBUG_CMD, "Decrement in use count for port\n"); + + if (PortP->InUse) { + if (--PortP->InUse != NOT_INUSE) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + } + } + /* + ** While PortP->InUse is set (i.e. a preemptive command has been sent to + ** the RTA and is awaiting completion), any transmit data is prevented from + ** being transferred from the write queue into the transmit packets + ** (add_transmit) and no furthur transmit interrupt will be sent for that + ** data. The next interrupt will occur up to 500ms later (RIOIntr is called + ** twice a second as a saftey measure). This was the case when kermit was + ** used to send data into a RIO port. After each packet was sent, TCFLSH + ** was called to flush the read queue preemptively. PortP->InUse was + ** incremented, thereby blocking the 6 byte acknowledgement packet + ** transmitted back. This acknowledgment hung around for 500ms before + ** being sent, thus reducing input performance substantially!. + ** When PortP->InUse becomes NOT_INUSE, we must ensure that any data + ** hanging around in the transmit buffer is sent immediately. + */ + writew(1, &PortP->HostP->ParmMapP->tx_intr); + /* What to do here .. + wakeup( (caddr_t)&(PortP->InUse) ); + */ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; +} + +/* +** +** How to use this file: +** +** To send a command down a rup, you need to allocate a command block, fill +** in the packet information, fill in the command number, fill in the pre- +** and post- functions and arguments, and then add the command block to the +** queue of command blocks for the port in question. When the port is idle, +** then the pre-function will be called. If this returns RIO_FAIL then the +** command will be re-queued and tried again at a later date (probably in one +** clock tick). If the pre-function returns NOT RIO_FAIL, then the command +** packet will be queued on the RUP, and the txcontrol field set to the +** command number. When the txcontrol field has changed from being the +** command number, then the post-function will be called, with the argument +** specified earlier, a pointer to the command block, and the value of +** txcontrol. +** +** To allocate a command block, call RIOGetCmdBlk(). This returns a pointer +** to the command block structure allocated, or NULL if there aren't any. +** The block will have been zeroed for you. +** +** The structure has the following fields: +** +** struct CmdBlk +** { +** struct CmdBlk *NextP; ** Pointer to next command block ** +** struct PKT Packet; ** A packet, to copy to the rup ** +** int (*PreFuncP)(); ** The func to call to check if OK ** +** int PreArg; ** The arg for the func ** +** int (*PostFuncP)(); ** The func to call when completed ** +** int PostArg; ** The arg for the func ** +** }; +** +** You need to fill in ALL fields EXCEPT NextP, which is used to link the +** blocks together either on the free list or on the Rup list. +** +** Packet is an actual packet structure to be filled in with the packet +** information associated with the command. You need to fill in everything, +** as the command processor doesn't process the command packet in any way. +** +** The PreFuncP is called before the packet is enqueued on the host rup. +** PreFuncP is called as (*PreFuncP)(PreArg, CmdBlkP);. PreFuncP must +** return !RIO_FAIL to have the packet queued on the rup, and RIO_FAIL +** if the packet is NOT to be queued. +** +** The PostFuncP is called when the command has completed. It is called +** as (*PostFuncP)(PostArg, CmdBlkP, txcontrol);. PostFuncP is not expected +** to return a value. PostFuncP does NOT need to free the command block, +** as this happens automatically after PostFuncP returns. +** +** Once the command block has been filled in, it is attached to the correct +** queue by calling RIOQueueCmdBlk( HostP, Rup, CmdBlkP ) where HostP is +** a pointer to the struct Host, Rup is the NUMBER of the rup (NOT a pointer +** to it!), and CmdBlkP is the pointer to the command block allocated using +** RIOGetCmdBlk(). +** +*/ diff --git a/drivers/staging/generic_serial/rio/rioctrl.c b/drivers/staging/generic_serial/rio/rioctrl.c new file mode 100644 index 000000000000..780506326a73 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioctrl.c @@ -0,0 +1,1504 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rioctrl.c +** SID : 1.3 +** Last Modified : 11/6/98 10:33:42 +** Retrieved : 11/6/98 10:33:49 +** +** ident @(#)rioctrl.c 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" + + +static struct LpbReq LpbReq; +static struct RupReq RupReq; +static struct PortReq PortReq; +static struct HostReq HostReq; /* oh really? global? and no locking? */ +static struct HostDpRam HostDpRam; +static struct DebugCtrl DebugCtrl; +static struct Map MapEnt; +static struct PortSetup PortSetup; +static struct DownLoad DownLoad; +static struct SendPack SendPack; +/* static struct StreamInfo StreamInfo; */ +/* static char modemtable[RIO_PORTS]; */ +static struct SpecialRupCmd SpecialRupCmd; +static struct PortParams PortParams; +static struct portStats portStats; + +static struct SubCmdStruct { + ushort Host; + ushort Rup; + ushort Port; + ushort Addr; +} SubCmd; + +struct PortTty { + uint port; + struct ttystatics Tty; +}; + +static struct PortTty PortTty; +typedef struct ttystatics TERMIO; + +/* +** This table is used when the config.rio downloads bin code to the +** driver. We index the table using the product code, 0-F, and call +** the function pointed to by the entry, passing the information +** about the boot. +** The RIOBootCodeUNKNOWN entry is there to politely tell the calling +** process to bog off. +*/ +static int + (*RIOBootTable[MAX_PRODUCT]) (struct rio_info *, struct DownLoad *) = { + /* 0 */ RIOBootCodeHOST, + /* Host Card */ + /* 1 */ RIOBootCodeRTA, + /* RTA */ +}; + +#define drv_makedev(maj, min) ((((uint) maj & 0xff) << 8) | ((uint) min & 0xff)) + +static int copy_from_io(void __user *to, void __iomem *from, size_t size) +{ + void *buf = kmalloc(size, GFP_KERNEL); + int res = -ENOMEM; + if (buf) { + rio_memcpy_fromio(buf, from, size); + res = copy_to_user(to, buf, size); + kfree(buf); + } + return res; +} + +int riocontrol(struct rio_info *p, dev_t dev, int cmd, unsigned long arg, int su) +{ + uint Host; /* leave me unsigned! */ + uint port; /* and me! */ + struct Host *HostP; + ushort loop; + int Entry; + struct Port *PortP; + struct PKT __iomem *PacketP; + int retval = 0; + unsigned long flags; + void __user *argp = (void __user *)arg; + + func_enter(); + + /* Confuse the compiler to think that we've initialized these */ + Host = 0; + PortP = NULL; + + rio_dprintk(RIO_DEBUG_CTRL, "control ioctl cmd: 0x%x arg: %p\n", cmd, argp); + + switch (cmd) { + /* + ** RIO_SET_TIMER + ** + ** Change the value of the host card interrupt timer. + ** If the host card number is -1 then all host cards are changed + ** otherwise just the specified host card will be changed. + */ + case RIO_SET_TIMER: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_TIMER to %ldms\n", arg); + { + int host, value; + host = (arg >> 16) & 0x0000FFFF; + value = arg & 0x0000ffff; + if (host == -1) { + for (host = 0; host < p->RIONumHosts; host++) { + if (p->RIOHosts[host].Flags == RC_RUNNING) { + writew(value, &p->RIOHosts[host].ParmMapP->timer); + } + } + } else if (host >= p->RIONumHosts) { + return -EINVAL; + } else { + if (p->RIOHosts[host].Flags == RC_RUNNING) { + writew(value, &p->RIOHosts[host].ParmMapP->timer); + } + } + } + return 0; + + case RIO_FOAD_RTA: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_FOAD_RTA\n"); + return RIOCommandRta(p, arg, RIOFoadRta); + + case RIO_ZOMBIE_RTA: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_ZOMBIE_RTA\n"); + return RIOCommandRta(p, arg, RIOZombieRta); + + case RIO_IDENTIFY_RTA: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_IDENTIFY_RTA\n"); + return RIOIdentifyRta(p, argp); + + case RIO_KILL_NEIGHBOUR: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_KILL_NEIGHBOUR\n"); + return RIOKillNeighbour(p, argp); + + case SPECIAL_RUP_CMD: + { + struct CmdBlk *CmdBlkP; + + rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD\n"); + if (copy_from_user(&SpecialRupCmd, argp, sizeof(SpecialRupCmd))) { + rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD copy failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + CmdBlkP = RIOGetCmdBlk(); + if (!CmdBlkP) { + rio_dprintk(RIO_DEBUG_CTRL, "SPECIAL_RUP_CMD GetCmdBlk failed\n"); + return -ENXIO; + } + CmdBlkP->Packet = SpecialRupCmd.Packet; + if (SpecialRupCmd.Host >= p->RIONumHosts) + SpecialRupCmd.Host = 0; + rio_dprintk(RIO_DEBUG_CTRL, "Queue special rup command for host %d rup %d\n", SpecialRupCmd.Host, SpecialRupCmd.RupNum); + if (RIOQueueCmdBlk(&p->RIOHosts[SpecialRupCmd.Host], SpecialRupCmd.RupNum, CmdBlkP) == RIO_FAIL) { + printk(KERN_WARNING "rio: FAILED TO QUEUE SPECIAL RUP COMMAND\n"); + } + return 0; + } + + case RIO_DEBUG_MEM: + return -EPERM; + + case RIO_ALL_MODEM: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_ALL_MODEM\n"); + p->RIOError.Error = IOCTL_COMMAND_UNKNOWN; + return -EINVAL; + + case RIO_GET_TABLE: + /* + ** Read the routing table from the device driver to user space + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_TABLE\n"); + + if ((retval = RIOApel(p)) != 0) + return retval; + + if (copy_to_user(argp, p->RIOConnectTable, TOTAL_MAP_ENTRIES * sizeof(struct Map))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_TABLE copy failed\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + + { + int entry; + rio_dprintk(RIO_DEBUG_CTRL, "*****\nMAP ENTRIES\n"); + for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) { + if ((p->RIOConnectTable[entry].ID == 0) && (p->RIOConnectTable[entry].HostUniqueNum == 0) && (p->RIOConnectTable[entry].RtaUniqueNum == 0)) + continue; + + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.HostUniqueNum = 0x%x\n", entry, p->RIOConnectTable[entry].HostUniqueNum); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.RtaUniqueNum = 0x%x\n", entry, p->RIOConnectTable[entry].RtaUniqueNum); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.ID = 0x%x\n", entry, p->RIOConnectTable[entry].ID); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.ID2 = 0x%x\n", entry, p->RIOConnectTable[entry].ID2); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Flags = 0x%x\n", entry, (int) p->RIOConnectTable[entry].Flags); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.SysPort = 0x%x\n", entry, (int) p->RIOConnectTable[entry].SysPort); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[0].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[0].Unit); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[0].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[0].Link); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[1].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[1].Unit); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[1].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[1].Link); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[2].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[2].Unit); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[2].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[2].Link); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[3].Unit = %x\n", entry, p->RIOConnectTable[entry].Topology[3].Unit); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Top[4].Link = %x\n", entry, p->RIOConnectTable[entry].Topology[3].Link); + rio_dprintk(RIO_DEBUG_CTRL, "Map entry %d.Name = %s\n", entry, p->RIOConnectTable[entry].Name); + } + rio_dprintk(RIO_DEBUG_CTRL, "*****\nEND MAP ENTRIES\n"); + } + p->RIOQuickCheck = NOT_CHANGED; /* a table has been gotten */ + return 0; + + case RIO_PUT_TABLE: + /* + ** Write the routing table to the device driver from user space + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_TABLE\n"); + + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_TABLE !Root\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_from_user(&p->RIOConnectTable[0], argp, TOTAL_MAP_ENTRIES * sizeof(struct Map))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_TABLE copy failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } +/* +*********************************** + { + int entry; + rio_dprint(RIO_DEBUG_CTRL, ("*****\nMAP ENTRIES\n") ); + for ( entry=0; entryRIOConnectTable[entry].HostUniqueNum ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.RtaUniqueNum = 0x%x\n", entry, p->RIOConnectTable[entry].RtaUniqueNum ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.ID = 0x%x\n", entry, p->RIOConnectTable[entry].ID ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.ID2 = 0x%x\n", entry, p->RIOConnectTable[entry].ID2 ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Flags = 0x%x\n", entry, p->RIOConnectTable[entry].Flags ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.SysPort = 0x%x\n", entry, p->RIOConnectTable[entry].SysPort ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[0].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[0].Unit ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[0].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[0].Link ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[1].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[1].Unit ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[1].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[1].Link ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[2].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[2].Unit ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[2].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[2].Link ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[3].Unit = %b\n", entry, p->RIOConnectTable[entry].Topology[3].Unit ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Top[4].Link = %b\n", entry, p->RIOConnectTable[entry].Topology[3].Link ) ); + rio_dprint(RIO_DEBUG_CTRL, ("Map entry %d.Name = %s\n", entry, p->RIOConnectTable[entry].Name ) ); + } + rio_dprint(RIO_DEBUG_CTRL, ("*****\nEND MAP ENTRIES\n") ); + } +*********************************** +*/ + return RIONewTable(p); + + case RIO_GET_BINDINGS: + /* + ** Send bindings table, containing unique numbers of RTAs owned + ** by this system to user space + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_BINDINGS\n"); + + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_BINDINGS !Root\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_to_user(argp, p->RIOBindTab, (sizeof(ulong) * MAX_RTA_BINDINGS))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_BINDINGS copy failed\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return 0; + + case RIO_PUT_BINDINGS: + /* + ** Receive a bindings table, containing unique numbers of RTAs owned + ** by this system + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_BINDINGS\n"); + + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_BINDINGS !Root\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_from_user(&p->RIOBindTab[0], argp, (sizeof(ulong) * MAX_RTA_BINDINGS))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PUT_BINDINGS copy failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + return 0; + + case RIO_BIND_RTA: + { + int EmptySlot = -1; + /* + ** Bind this RTA to host, so that it will be booted by + ** host in 'boot owned RTAs' mode. + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_BIND_RTA\n"); + + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_BIND_RTA !Root\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + for (Entry = 0; Entry < MAX_RTA_BINDINGS; Entry++) { + if ((EmptySlot == -1) && (p->RIOBindTab[Entry] == 0L)) + EmptySlot = Entry; + else if (p->RIOBindTab[Entry] == arg) { + /* + ** Already exists - delete + */ + p->RIOBindTab[Entry] = 0L; + rio_dprintk(RIO_DEBUG_CTRL, "Removing Rta %ld from p->RIOBindTab\n", arg); + return 0; + } + } + /* + ** Dosen't exist - add + */ + if (EmptySlot != -1) { + p->RIOBindTab[EmptySlot] = arg; + rio_dprintk(RIO_DEBUG_CTRL, "Adding Rta %lx to p->RIOBindTab\n", arg); + } else { + rio_dprintk(RIO_DEBUG_CTRL, "p->RIOBindTab full! - Rta %lx not added\n", arg); + return -ENOMEM; + } + return 0; + } + + case RIO_RESUME: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME\n"); + port = arg; + if ((port < 0) || (port > 511)) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Bad port number %d\n", port); + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + PortP = p->RIOPortp[port]; + if (!PortP->Mapped) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Port %d not mapped\n", port); + p->RIOError.Error = PORT_NOT_MAPPED_INTO_SYSTEM; + return -EINVAL; + } + if (!(PortP->State & (RIO_LOPEN | RIO_MOPEN))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Port %d not open\n", port); + return -EINVAL; + } + + rio_spin_lock_irqsave(&PortP->portSem, flags); + if (RIOPreemptiveCmd(p, (p->RIOPortp[port]), RIOC_RESUME) == + RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME failed\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EBUSY; + } else { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESUME: Port %d resumed\n", port); + PortP->State |= RIO_BUSY; + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + + case RIO_ASSIGN_RTA: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_ASSIGN_RTA\n"); + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_ASSIGN_RTA !Root\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) { + rio_dprintk(RIO_DEBUG_CTRL, "Copy from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + return RIOAssignRta(p, &MapEnt); + + case RIO_CHANGE_NAME: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_CHANGE_NAME\n"); + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_CHANGE_NAME !Root\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) { + rio_dprintk(RIO_DEBUG_CTRL, "Copy from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + return RIOChangeName(p, &MapEnt); + + case RIO_DELETE_RTA: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_DELETE_RTA\n"); + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_DELETE_RTA !Root\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_from_user(&MapEnt, argp, sizeof(MapEnt))) { + rio_dprintk(RIO_DEBUG_CTRL, "Copy from data space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + return RIODeleteRta(p, &MapEnt); + + case RIO_QUICK_CHECK: + if (copy_to_user(argp, &p->RIORtaDisCons, sizeof(unsigned int))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return 0; + + case RIO_LAST_ERROR: + if (copy_to_user(argp, &p->RIOError, sizeof(struct Error))) + return -EFAULT; + return 0; + + case RIO_GET_LOG: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_LOG\n"); + return -EINVAL; + + case RIO_GET_MODTYPE: + if (copy_from_user(&port, argp, sizeof(unsigned int))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + rio_dprintk(RIO_DEBUG_CTRL, "Get module type for port %d\n", port); + if (port < 0 || port > 511) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_MODTYPE: Bad port number %d\n", port); + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + PortP = (p->RIOPortp[port]); + if (!PortP->Mapped) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_MODTYPE: Port %d not mapped\n", port); + p->RIOError.Error = PORT_NOT_MAPPED_INTO_SYSTEM; + return -EINVAL; + } + /* + ** Return module type of port + */ + port = PortP->HostP->UnixRups[PortP->RupNum].ModTypes; + if (copy_to_user(argp, &port, sizeof(unsigned int))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return (0); + case RIO_BLOCK_OPENS: + rio_dprintk(RIO_DEBUG_CTRL, "Opens block until booted\n"); + for (Entry = 0; Entry < RIO_PORTS; Entry++) { + rio_spin_lock_irqsave(&PortP->portSem, flags); + p->RIOPortp[Entry]->WaitUntilBooted = 1; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + } + return 0; + + case RIO_SETUP_PORTS: + rio_dprintk(RIO_DEBUG_CTRL, "Setup ports\n"); + if (copy_from_user(&PortSetup, argp, sizeof(PortSetup))) { + p->RIOError.Error = COPYIN_FAILED; + rio_dprintk(RIO_DEBUG_CTRL, "EFAULT"); + return -EFAULT; + } + if (PortSetup.From > PortSetup.To || PortSetup.To >= RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + rio_dprintk(RIO_DEBUG_CTRL, "ENXIO"); + return -ENXIO; + } + if (PortSetup.XpCps > p->RIOConf.MaxXpCps || PortSetup.XpCps < p->RIOConf.MinXpCps) { + p->RIOError.Error = XPRINT_CPS_OUT_OF_RANGE; + rio_dprintk(RIO_DEBUG_CTRL, "EINVAL"); + return -EINVAL; + } + if (!p->RIOPortp) { + printk(KERN_ERR "rio: No p->RIOPortp array!\n"); + rio_dprintk(RIO_DEBUG_CTRL, "No p->RIOPortp array!\n"); + return -EIO; + } + rio_dprintk(RIO_DEBUG_CTRL, "entering loop (%d %d)!\n", PortSetup.From, PortSetup.To); + for (loop = PortSetup.From; loop <= PortSetup.To; loop++) { + rio_dprintk(RIO_DEBUG_CTRL, "in loop (%d)!\n", loop); + } + rio_dprintk(RIO_DEBUG_CTRL, "after loop (%d)!\n", loop); + rio_dprintk(RIO_DEBUG_CTRL, "Retval:%x\n", retval); + return retval; + + case RIO_GET_PORT_SETUP: + rio_dprintk(RIO_DEBUG_CTRL, "Get port setup\n"); + if (copy_from_user(&PortSetup, argp, sizeof(PortSetup))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (PortSetup.From >= RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + + port = PortSetup.To = PortSetup.From; + PortSetup.IxAny = (p->RIOPortp[port]->Config & RIO_IXANY) ? 1 : 0; + PortSetup.IxOn = (p->RIOPortp[port]->Config & RIO_IXON) ? 1 : 0; + PortSetup.Drain = (p->RIOPortp[port]->Config & RIO_WAITDRAIN) ? 1 : 0; + PortSetup.Store = p->RIOPortp[port]->Store; + PortSetup.Lock = p->RIOPortp[port]->Lock; + PortSetup.XpCps = p->RIOPortp[port]->Xprint.XpCps; + memcpy(PortSetup.XpOn, p->RIOPortp[port]->Xprint.XpOn, MAX_XP_CTRL_LEN); + memcpy(PortSetup.XpOff, p->RIOPortp[port]->Xprint.XpOff, MAX_XP_CTRL_LEN); + PortSetup.XpOn[MAX_XP_CTRL_LEN - 1] = '\0'; + PortSetup.XpOff[MAX_XP_CTRL_LEN - 1] = '\0'; + + if (copy_to_user(argp, &PortSetup, sizeof(PortSetup))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + case RIO_GET_PORT_PARAMS: + rio_dprintk(RIO_DEBUG_CTRL, "Get port params\n"); + if (copy_from_user(&PortParams, argp, sizeof(struct PortParams))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (PortParams.Port >= RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + PortP = (p->RIOPortp[PortParams.Port]); + PortParams.Config = PortP->Config; + PortParams.State = PortP->State; + rio_dprintk(RIO_DEBUG_CTRL, "Port %d\n", PortParams.Port); + + if (copy_to_user(argp, &PortParams, sizeof(struct PortParams))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + case RIO_GET_PORT_TTY: + rio_dprintk(RIO_DEBUG_CTRL, "Get port tty\n"); + if (copy_from_user(&PortTty, argp, sizeof(struct PortTty))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (PortTty.port >= RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + + rio_dprintk(RIO_DEBUG_CTRL, "Port %d\n", PortTty.port); + PortP = (p->RIOPortp[PortTty.port]); + if (copy_to_user(argp, &PortTty, sizeof(struct PortTty))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + case RIO_SET_PORT_TTY: + if (copy_from_user(&PortTty, argp, sizeof(struct PortTty))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + rio_dprintk(RIO_DEBUG_CTRL, "Set port %d tty\n", PortTty.port); + if (PortTty.port >= (ushort) RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + PortP = (p->RIOPortp[PortTty.port]); + RIOParam(PortP, RIOC_CONFIG, PortP->State & RIO_MODEM, + OK_TO_SLEEP); + return retval; + + case RIO_SET_PORT_PARAMS: + rio_dprintk(RIO_DEBUG_CTRL, "Set port params\n"); + if (copy_from_user(&PortParams, argp, sizeof(PortParams))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (PortParams.Port >= (ushort) RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + PortP = (p->RIOPortp[PortParams.Port]); + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->Config = PortParams.Config; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + + case RIO_GET_PORT_STATS: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GET_PORT_STATS\n"); + if (copy_from_user(&portStats, argp, sizeof(struct portStats))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (portStats.port < 0 || portStats.port >= RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + PortP = (p->RIOPortp[portStats.port]); + portStats.gather = PortP->statsGather; + portStats.txchars = PortP->txchars; + portStats.rxchars = PortP->rxchars; + portStats.opens = PortP->opens; + portStats.closes = PortP->closes; + portStats.ioctls = PortP->ioctls; + if (copy_to_user(argp, &portStats, sizeof(struct portStats))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + case RIO_RESET_PORT_STATS: + port = arg; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_RESET_PORT_STATS\n"); + if (port >= RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + PortP = (p->RIOPortp[port]); + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->txchars = 0; + PortP->rxchars = 0; + PortP->opens = 0; + PortP->closes = 0; + PortP->ioctls = 0; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + + case RIO_GATHER_PORT_STATS: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GATHER_PORT_STATS\n"); + if (copy_from_user(&portStats, argp, sizeof(struct portStats))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (portStats.port < 0 || portStats.port >= RIO_PORTS) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + PortP = (p->RIOPortp[portStats.port]); + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->statsGather = portStats.gather; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + + case RIO_READ_CONFIG: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_CONFIG\n"); + if (copy_to_user(argp, &p->RIOConf, sizeof(struct Conf))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + case RIO_SET_CONFIG: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_CONFIG\n"); + if (!su) { + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_from_user(&p->RIOConf, argp, sizeof(struct Conf))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + /* + ** move a few value around + */ + for (Host = 0; Host < p->RIONumHosts; Host++) + if ((p->RIOHosts[Host].Flags & RUN_STATE) == RC_RUNNING) + writew(p->RIOConf.Timer, &p->RIOHosts[Host].ParmMapP->timer); + return retval; + + case RIO_START_POLLER: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_START_POLLER\n"); + return -EINVAL; + + case RIO_STOP_POLLER: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_STOP_POLLER\n"); + if (!su) { + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + p->RIOPolling = NOT_POLLING; + return retval; + + case RIO_SETDEBUG: + case RIO_GETDEBUG: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SETDEBUG/RIO_GETDEBUG\n"); + if (copy_from_user(&DebugCtrl, argp, sizeof(DebugCtrl))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (DebugCtrl.SysPort == NO_PORT) { + if (cmd == RIO_SETDEBUG) { + if (!su) { + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + p->rio_debug = DebugCtrl.Debug; + p->RIODebugWait = DebugCtrl.Wait; + rio_dprintk(RIO_DEBUG_CTRL, "Set global debug to 0x%x set wait to 0x%x\n", p->rio_debug, p->RIODebugWait); + } else { + rio_dprintk(RIO_DEBUG_CTRL, "Get global debug 0x%x wait 0x%x\n", p->rio_debug, p->RIODebugWait); + DebugCtrl.Debug = p->rio_debug; + DebugCtrl.Wait = p->RIODebugWait; + if (copy_to_user(argp, &DebugCtrl, sizeof(DebugCtrl))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET/GET DEBUG: bad port number %d\n", DebugCtrl.SysPort); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + } + } else if (DebugCtrl.SysPort >= RIO_PORTS && DebugCtrl.SysPort != NO_PORT) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET/GET DEBUG: bad port number %d\n", DebugCtrl.SysPort); + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } else if (cmd == RIO_SETDEBUG) { + if (!su) { + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + p->RIOPortp[DebugCtrl.SysPort]->Debug = DebugCtrl.Debug; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SETDEBUG 0x%x\n", p->RIOPortp[DebugCtrl.SysPort]->Debug); + } else { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GETDEBUG 0x%x\n", p->RIOPortp[DebugCtrl.SysPort]->Debug); + DebugCtrl.Debug = p->RIOPortp[DebugCtrl.SysPort]->Debug; + if (copy_to_user(argp, &DebugCtrl, sizeof(DebugCtrl))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_GETDEBUG: Bad copy to user space\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + } + return retval; + + case RIO_VERSID: + /* + ** Enquire about the release and version. + ** We return MAX_VERSION_LEN bytes, being a + ** textual null terminated string. + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_VERSID\n"); + if (copy_to_user(argp, RIOVersid(), sizeof(struct rioVersion))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_VERSID: Bad copy to user space (host=%d)\n", Host); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + case RIO_NUM_HOSTS: + /* + ** Enquire as to the number of hosts located + ** at init time. + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_NUM_HOSTS\n"); + if (copy_to_user(argp, &p->RIONumHosts, sizeof(p->RIONumHosts))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_NUM_HOSTS: Bad copy to user space\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + case RIO_HOST_FOAD: + /* + ** Kill host. This may not be in the final version... + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_FOAD %ld\n", arg); + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_FOAD: Not super user\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + p->RIOHalted = 1; + p->RIOSystemUp = 0; + + for (Host = 0; Host < p->RIONumHosts; Host++) { + (void) RIOBoardTest(p->RIOHosts[Host].PaddrP, p->RIOHosts[Host].Caddr, p->RIOHosts[Host].Type, p->RIOHosts[Host].Slot); + memset(&p->RIOHosts[Host].Flags, 0, ((char *) &p->RIOHosts[Host].____end_marker____) - ((char *) &p->RIOHosts[Host].Flags)); + p->RIOHosts[Host].Flags = RC_WAITING; + } + RIOFoadWakeup(p); + p->RIONumBootPkts = 0; + p->RIOBooting = 0; + printk("HEEEEELP!\n"); + + for (loop = 0; loop < RIO_PORTS; loop++) { + spin_lock_init(&p->RIOPortp[loop]->portSem); + p->RIOPortp[loop]->InUse = NOT_INUSE; + } + + p->RIOSystemUp = 0; + return retval; + + case RIO_DOWNLOAD: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD\n"); + if (!su) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Not super user\n"); + p->RIOError.Error = NOT_SUPER_USER; + return -EPERM; + } + if (copy_from_user(&DownLoad, argp, sizeof(DownLoad))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Copy in from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + rio_dprintk(RIO_DEBUG_CTRL, "Copied in download code for product code 0x%x\n", DownLoad.ProductCode); + + /* + ** It is important that the product code is an unsigned object! + */ + if (DownLoad.ProductCode >= MAX_PRODUCT) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_DOWNLOAD: Bad product code %d passed\n", DownLoad.ProductCode); + p->RIOError.Error = NO_SUCH_PRODUCT; + return -ENXIO; + } + /* + ** do something! + */ + retval = (*(RIOBootTable[DownLoad.ProductCode])) (p, &DownLoad); + /* <-- Panic */ + p->RIOHalted = 0; + /* + ** and go back, content with a job well completed. + */ + return retval; + + case RIO_PARMS: + { + unsigned int host; + + if (copy_from_user(&host, argp, sizeof(host))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Copy in from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + /* + ** Fetch the parmmap + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PARMS\n"); + if (copy_from_io(argp, p->RIOHosts[host].ParmMapP, sizeof(PARM_MAP))) { + p->RIOError.Error = COPYOUT_FAILED; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_PARMS: Copy out to user space failed\n"); + return -EFAULT; + } + } + return retval; + + case RIO_HOST_REQ: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ\n"); + if (copy_from_user(&HostReq, argp, sizeof(HostReq))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Copy in from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (HostReq.HostNum >= p->RIONumHosts) { + p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Illegal host number %d\n", HostReq.HostNum); + return -ENXIO; + } + rio_dprintk(RIO_DEBUG_CTRL, "Request for host %d\n", HostReq.HostNum); + + if (copy_to_user(HostReq.HostP, &p->RIOHosts[HostReq.HostNum], sizeof(struct Host))) { + p->RIOError.Error = COPYOUT_FAILED; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_REQ: Bad copy to user space\n"); + return -EFAULT; + } + return retval; + + case RIO_HOST_DPRAM: + rio_dprintk(RIO_DEBUG_CTRL, "Request for DPRAM\n"); + if (copy_from_user(&HostDpRam, argp, sizeof(HostDpRam))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Copy in from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (HostDpRam.HostNum >= p->RIONumHosts) { + p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Illegal host number %d\n", HostDpRam.HostNum); + return -ENXIO; + } + rio_dprintk(RIO_DEBUG_CTRL, "Request for host %d\n", HostDpRam.HostNum); + + if (p->RIOHosts[HostDpRam.HostNum].Type == RIO_PCI) { + int off; + /* It's hardware like this that really gets on my tits. */ + static unsigned char copy[sizeof(struct DpRam)]; + for (off = 0; off < sizeof(struct DpRam); off++) + copy[off] = readb(p->RIOHosts[HostDpRam.HostNum].Caddr + off); + if (copy_to_user(HostDpRam.DpRamP, copy, sizeof(struct DpRam))) { + p->RIOError.Error = COPYOUT_FAILED; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Bad copy to user space\n"); + return -EFAULT; + } + } else if (copy_from_io(HostDpRam.DpRamP, p->RIOHosts[HostDpRam.HostNum].Caddr, sizeof(struct DpRam))) { + p->RIOError.Error = COPYOUT_FAILED; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_DPRAM: Bad copy to user space\n"); + return -EFAULT; + } + return retval; + + case RIO_SET_BUSY: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_BUSY\n"); + if (arg > 511) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SET_BUSY: Bad port number %ld\n", arg); + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + p->RIOPortp[arg]->State |= RIO_BUSY; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + + case RIO_HOST_PORT: + /* + ** The daemon want port information + ** (probably for debug reasons) + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT\n"); + if (copy_from_user(&PortReq, argp, sizeof(PortReq))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT: Copy in from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + + if (PortReq.SysPort >= RIO_PORTS) { /* SysPort is unsigned */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT: Illegal port number %d\n", PortReq.SysPort); + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + rio_dprintk(RIO_DEBUG_CTRL, "Request for port %d\n", PortReq.SysPort); + if (copy_to_user(PortReq.PortP, p->RIOPortp[PortReq.SysPort], sizeof(struct Port))) { + p->RIOError.Error = COPYOUT_FAILED; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_PORT: Bad copy to user space\n"); + return -EFAULT; + } + return retval; + + case RIO_HOST_RUP: + /* + ** The daemon want rup information + ** (probably for debug reasons) + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP\n"); + if (copy_from_user(&RupReq, argp, sizeof(RupReq))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Copy in from user space failed\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (RupReq.HostNum >= p->RIONumHosts) { /* host is unsigned */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Illegal host number %d\n", RupReq.HostNum); + p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + if (RupReq.RupNum >= MAX_RUP + LINKS_PER_UNIT) { /* eek! */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Illegal rup number %d\n", RupReq.RupNum); + p->RIOError.Error = RUP_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + HostP = &p->RIOHosts[RupReq.HostNum]; + + if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Host %d not running\n", RupReq.HostNum); + p->RIOError.Error = HOST_NOT_RUNNING; + return -EIO; + } + rio_dprintk(RIO_DEBUG_CTRL, "Request for rup %d from host %d\n", RupReq.RupNum, RupReq.HostNum); + + if (copy_from_io(RupReq.RupP, HostP->UnixRups[RupReq.RupNum].RupP, sizeof(struct RUP))) { + p->RIOError.Error = COPYOUT_FAILED; + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_RUP: Bad copy to user space\n"); + return -EFAULT; + } + return retval; + + case RIO_HOST_LPB: + /* + ** The daemon want lpb information + ** (probably for debug reasons) + */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB\n"); + if (copy_from_user(&LpbReq, argp, sizeof(LpbReq))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Bad copy from user space\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (LpbReq.Host >= p->RIONumHosts) { /* host is unsigned */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Illegal host number %d\n", LpbReq.Host); + p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + if (LpbReq.Link >= LINKS_PER_UNIT) { /* eek! */ + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Illegal link number %d\n", LpbReq.Link); + p->RIOError.Error = LINK_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + HostP = &p->RIOHosts[LpbReq.Host]; + + if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Host %d not running\n", LpbReq.Host); + p->RIOError.Error = HOST_NOT_RUNNING; + return -EIO; + } + rio_dprintk(RIO_DEBUG_CTRL, "Request for lpb %d from host %d\n", LpbReq.Link, LpbReq.Host); + + if (copy_from_io(LpbReq.LpbP, &HostP->LinkStrP[LpbReq.Link], sizeof(struct LPB))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_HOST_LPB: Bad copy to user space\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return retval; + + /* + ** Here 3 IOCTL's that allow us to change the way in which + ** rio logs errors. send them just to syslog or send them + ** to both syslog and console or send them to just the console. + ** + ** See RioStrBuf() in util.c for the other half. + */ + case RIO_SYSLOG_ONLY: + p->RIOPrintLogState = PRINT_TO_LOG; /* Just syslog */ + return 0; + + case RIO_SYSLOG_CONS: + p->RIOPrintLogState = PRINT_TO_LOG_CONS; /* syslog and console */ + return 0; + + case RIO_CONS_ONLY: + p->RIOPrintLogState = PRINT_TO_CONS; /* Just console */ + return 0; + + case RIO_SIGNALS_ON: + if (p->RIOSignalProcess) { + p->RIOError.Error = SIGNALS_ALREADY_SET; + return -EBUSY; + } + /* FIXME: PID tracking */ + p->RIOSignalProcess = current->pid; + p->RIOPrintDisabled = DONT_PRINT; + return retval; + + case RIO_SIGNALS_OFF: + if (p->RIOSignalProcess != current->pid) { + p->RIOError.Error = NOT_RECEIVING_PROCESS; + return -EPERM; + } + rio_dprintk(RIO_DEBUG_CTRL, "Clear signal process to zero\n"); + p->RIOSignalProcess = 0; + return retval; + + case RIO_SET_BYTE_MODE: + for (Host = 0; Host < p->RIONumHosts; Host++) + if (p->RIOHosts[Host].Type == RIO_AT) + p->RIOHosts[Host].Mode &= ~WORD_OPERATION; + return retval; + + case RIO_SET_WORD_MODE: + for (Host = 0; Host < p->RIONumHosts; Host++) + if (p->RIOHosts[Host].Type == RIO_AT) + p->RIOHosts[Host].Mode |= WORD_OPERATION; + return retval; + + case RIO_SET_FAST_BUS: + for (Host = 0; Host < p->RIONumHosts; Host++) + if (p->RIOHosts[Host].Type == RIO_AT) + p->RIOHosts[Host].Mode |= FAST_AT_BUS; + return retval; + + case RIO_SET_SLOW_BUS: + for (Host = 0; Host < p->RIONumHosts; Host++) + if (p->RIOHosts[Host].Type == RIO_AT) + p->RIOHosts[Host].Mode &= ~FAST_AT_BUS; + return retval; + + case RIO_MAP_B50_TO_50: + case RIO_MAP_B50_TO_57600: + case RIO_MAP_B110_TO_110: + case RIO_MAP_B110_TO_115200: + rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping\n"); + port = arg; + if (port < 0 || port > 511) { + rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping: Bad port number %d\n", port); + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + switch (cmd) { + case RIO_MAP_B50_TO_50: + p->RIOPortp[port]->Config |= RIO_MAP_50_TO_50; + break; + case RIO_MAP_B50_TO_57600: + p->RIOPortp[port]->Config &= ~RIO_MAP_50_TO_50; + break; + case RIO_MAP_B110_TO_110: + p->RIOPortp[port]->Config |= RIO_MAP_110_TO_110; + break; + case RIO_MAP_B110_TO_115200: + p->RIOPortp[port]->Config &= ~RIO_MAP_110_TO_110; + break; + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + + case RIO_STREAM_INFO: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_STREAM_INFO\n"); + return -EINVAL; + + case RIO_SEND_PACKET: + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SEND_PACKET\n"); + if (copy_from_user(&SendPack, argp, sizeof(SendPack))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_SEND_PACKET: Bad copy from user space\n"); + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + if (SendPack.PortNum >= 128) { + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -ENXIO; + } + + PortP = p->RIOPortp[SendPack.PortNum]; + rio_spin_lock_irqsave(&PortP->portSem, flags); + + if (!can_add_transmit(&PacketP, PortP)) { + p->RIOError.Error = UNIT_IS_IN_USE; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -ENOSPC; + } + + for (loop = 0; loop < (ushort) (SendPack.Len & 127); loop++) + writeb(SendPack.Data[loop], &PacketP->data[loop]); + + writeb(SendPack.Len, &PacketP->len); + + add_transmit(PortP); + /* + ** Count characters transmitted for port statistics reporting + */ + if (PortP->statsGather) + PortP->txchars += (SendPack.Len & 127); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + + case RIO_NO_MESG: + if (su) + p->RIONoMessage = 1; + return su ? 0 : -EPERM; + + case RIO_MESG: + if (su) + p->RIONoMessage = 0; + return su ? 0 : -EPERM; + + case RIO_WHAT_MESG: + if (copy_to_user(argp, &p->RIONoMessage, sizeof(p->RIONoMessage))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_WHAT_MESG: Bad copy to user space\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return 0; + + case RIO_MEM_DUMP: + if (copy_from_user(&SubCmd, argp, sizeof(struct SubCmdStruct))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP host %d rup %d addr %x\n", SubCmd.Host, SubCmd.Rup, SubCmd.Addr); + + if (SubCmd.Rup >= MAX_RUP + LINKS_PER_UNIT) { + p->RIOError.Error = RUP_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + + if (SubCmd.Host >= p->RIONumHosts) { + p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + + port = p->RIOHosts[SubCmd.Host].UnixRups[SubCmd.Rup].BaseSysPort; + + PortP = p->RIOPortp[port]; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + + if (RIOPreemptiveCmd(p, PortP, RIOC_MEMDUMP) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP failed\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EBUSY; + } else + PortP->State |= RIO_BUSY; + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (copy_to_user(argp, p->RIOMemDump, MEMDUMP_SIZE)) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_MEM_DUMP copy failed\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return 0; + + case RIO_TICK: + if (arg >= p->RIONumHosts) + return -EINVAL; + rio_dprintk(RIO_DEBUG_CTRL, "Set interrupt for host %ld\n", arg); + writeb(0xFF, &p->RIOHosts[arg].SetInt); + return 0; + + case RIO_TOCK: + if (arg >= p->RIONumHosts) + return -EINVAL; + rio_dprintk(RIO_DEBUG_CTRL, "Clear interrupt for host %ld\n", arg); + writeb(0xFF, &p->RIOHosts[arg].ResetInt); + return 0; + + case RIO_READ_CHECK: + /* Check reads for pkts with data[0] the same */ + p->RIOReadCheck = !p->RIOReadCheck; + if (copy_to_user(argp, &p->RIOReadCheck, sizeof(unsigned int))) { + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return 0; + + case RIO_READ_REGISTER: + if (copy_from_user(&SubCmd, argp, sizeof(struct SubCmdStruct))) { + p->RIOError.Error = COPYIN_FAILED; + return -EFAULT; + } + rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER host %d rup %d port %d reg %x\n", SubCmd.Host, SubCmd.Rup, SubCmd.Port, SubCmd.Addr); + + if (SubCmd.Port > 511) { + rio_dprintk(RIO_DEBUG_CTRL, "Baud rate mapping: Bad port number %d\n", SubCmd.Port); + p->RIOError.Error = PORT_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + + if (SubCmd.Rup >= MAX_RUP + LINKS_PER_UNIT) { + p->RIOError.Error = RUP_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + + if (SubCmd.Host >= p->RIONumHosts) { + p->RIOError.Error = HOST_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + + port = p->RIOHosts[SubCmd.Host].UnixRups[SubCmd.Rup].BaseSysPort + SubCmd.Port; + PortP = p->RIOPortp[port]; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + + if (RIOPreemptiveCmd(p, PortP, RIOC_READ_REGISTER) == + RIO_FAIL) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER failed\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EBUSY; + } else + PortP->State |= RIO_BUSY; + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (copy_to_user(argp, &p->CdRegister, sizeof(unsigned int))) { + rio_dprintk(RIO_DEBUG_CTRL, "RIO_READ_REGISTER copy failed\n"); + p->RIOError.Error = COPYOUT_FAILED; + return -EFAULT; + } + return 0; + /* + ** rio_make_dev: given port number (0-511) ORed with port type + ** (RIO_DEV_DIRECT, RIO_DEV_MODEM, RIO_DEV_XPRINT) return dev_t + ** value to pass to mknod to create the correct device node. + */ + case RIO_MAKE_DEV: + { + unsigned int port = arg & RIO_MODEM_MASK; + unsigned int ret; + + switch (arg & RIO_DEV_MASK) { + case RIO_DEV_DIRECT: + ret = drv_makedev(MAJOR(dev), port); + rio_dprintk(RIO_DEBUG_CTRL, "Makedev direct 0x%x is 0x%x\n", port, ret); + return ret; + case RIO_DEV_MODEM: + ret = drv_makedev(MAJOR(dev), (port | RIO_MODEM_BIT)); + rio_dprintk(RIO_DEBUG_CTRL, "Makedev modem 0x%x is 0x%x\n", port, ret); + return ret; + case RIO_DEV_XPRINT: + ret = drv_makedev(MAJOR(dev), port); + rio_dprintk(RIO_DEBUG_CTRL, "Makedev printer 0x%x is 0x%x\n", port, ret); + return ret; + } + rio_dprintk(RIO_DEBUG_CTRL, "MAKE Device is called\n"); + return -EINVAL; + } + /* + ** rio_minor: given a dev_t from a stat() call, return + ** the port number (0-511) ORed with the port type + ** ( RIO_DEV_DIRECT, RIO_DEV_MODEM, RIO_DEV_XPRINT ) + */ + case RIO_MINOR: + { + dev_t dv; + int mino; + unsigned long ret; + + dv = (dev_t) (arg); + mino = RIO_UNMODEM(dv); + + if (RIO_ISMODEM(dv)) { + rio_dprintk(RIO_DEBUG_CTRL, "Minor for device 0x%x: modem %d\n", dv, mino); + ret = mino | RIO_DEV_MODEM; + } else { + rio_dprintk(RIO_DEBUG_CTRL, "Minor for device 0x%x: direct %d\n", dv, mino); + ret = mino | RIO_DEV_DIRECT; + } + return ret; + } + } + rio_dprintk(RIO_DEBUG_CTRL, "INVALID DAEMON IOCTL 0x%x\n", cmd); + p->RIOError.Error = IOCTL_COMMAND_UNKNOWN; + + func_exit(); + return -EINVAL; +} + +/* +** Pre-emptive commands go on RUPs and are only one byte long. +*/ +int RIOPreemptiveCmd(struct rio_info *p, struct Port *PortP, u8 Cmd) +{ + struct CmdBlk *CmdBlkP; + struct PktCmd_M *PktCmdP; + int Ret; + ushort rup; + int port; + + if (PortP->State & RIO_DELETED) { + rio_dprintk(RIO_DEBUG_CTRL, "Preemptive command to deleted RTA ignored\n"); + return RIO_FAIL; + } + + if ((PortP->InUse == (typeof(PortP->InUse))-1) || + !(CmdBlkP = RIOGetCmdBlk())) { + rio_dprintk(RIO_DEBUG_CTRL, "Cannot allocate command block " + "for command %d on port %d\n", Cmd, PortP->PortNum); + return RIO_FAIL; + } + + rio_dprintk(RIO_DEBUG_CTRL, "Command blk %p - InUse now %d\n", + CmdBlkP, PortP->InUse); + + PktCmdP = (struct PktCmd_M *)&CmdBlkP->Packet.data[0]; + + CmdBlkP->Packet.src_unit = 0; + if (PortP->SecondBlock) + rup = PortP->ID2; + else + rup = PortP->RupNum; + CmdBlkP->Packet.dest_unit = rup; + CmdBlkP->Packet.src_port = COMMAND_RUP; + CmdBlkP->Packet.dest_port = COMMAND_RUP; + CmdBlkP->Packet.len = PKT_CMD_BIT | 2; + CmdBlkP->PostFuncP = RIOUnUse; + CmdBlkP->PostArg = (unsigned long) PortP; + PktCmdP->Command = Cmd; + port = PortP->HostPort % (ushort) PORTS_PER_RTA; + /* + ** Index ports 8-15 for 2nd block of 16 port RTA. + */ + if (PortP->SecondBlock) + port += (ushort) PORTS_PER_RTA; + PktCmdP->PhbNum = port; + + switch (Cmd) { + case RIOC_MEMDUMP: + rio_dprintk(RIO_DEBUG_CTRL, "Queue MEMDUMP command blk %p " + "(addr 0x%x)\n", CmdBlkP, (int) SubCmd.Addr); + PktCmdP->SubCommand = RIOC_MEMDUMP; + PktCmdP->SubAddr = SubCmd.Addr; + break; + case RIOC_FCLOSE: + rio_dprintk(RIO_DEBUG_CTRL, "Queue FCLOSE command blk %p\n", + CmdBlkP); + break; + case RIOC_READ_REGISTER: + rio_dprintk(RIO_DEBUG_CTRL, "Queue READ_REGISTER (0x%x) " + "command blk %p\n", (int) SubCmd.Addr, CmdBlkP); + PktCmdP->SubCommand = RIOC_READ_REGISTER; + PktCmdP->SubAddr = SubCmd.Addr; + break; + case RIOC_RESUME: + rio_dprintk(RIO_DEBUG_CTRL, "Queue RESUME command blk %p\n", + CmdBlkP); + break; + case RIOC_RFLUSH: + rio_dprintk(RIO_DEBUG_CTRL, "Queue RFLUSH command blk %p\n", + CmdBlkP); + CmdBlkP->PostFuncP = RIORFlushEnable; + break; + case RIOC_SUSPEND: + rio_dprintk(RIO_DEBUG_CTRL, "Queue SUSPEND command blk %p\n", + CmdBlkP); + break; + + case RIOC_MGET: + rio_dprintk(RIO_DEBUG_CTRL, "Queue MGET command blk %p\n", + CmdBlkP); + break; + + case RIOC_MSET: + case RIOC_MBIC: + case RIOC_MBIS: + CmdBlkP->Packet.data[4] = (char) PortP->ModemLines; + rio_dprintk(RIO_DEBUG_CTRL, "Queue MSET/MBIC/MBIS command " + "blk %p\n", CmdBlkP); + break; + + case RIOC_WFLUSH: + /* + ** If we have queued up the maximum number of Write flushes + ** allowed then we should not bother sending any more to the + ** RTA. + */ + if (PortP->WflushFlag == (typeof(PortP->WflushFlag))-1) { + rio_dprintk(RIO_DEBUG_CTRL, "Trashed WFLUSH, " + "WflushFlag about to wrap!"); + RIOFreeCmdBlk(CmdBlkP); + return (RIO_FAIL); + } else { + rio_dprintk(RIO_DEBUG_CTRL, "Queue WFLUSH command " + "blk %p\n", CmdBlkP); + CmdBlkP->PostFuncP = RIOWFlushMark; + } + break; + } + + PortP->InUse++; + + Ret = RIOQueueCmdBlk(PortP->HostP, rup, CmdBlkP); + + return Ret; +} diff --git a/drivers/staging/generic_serial/rio/riodrvr.h b/drivers/staging/generic_serial/rio/riodrvr.h new file mode 100644 index 000000000000..0907e711b355 --- /dev/null +++ b/drivers/staging/generic_serial/rio/riodrvr.h @@ -0,0 +1,138 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : riodrvr.h +** SID : 1.3 +** Last Modified : 11/6/98 09:22:46 +** Retrieved : 11/6/98 09:22:46 +** +** ident @(#)riodrvr.h 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __riodrvr_h +#define __riodrvr_h + +#include /* for HZ */ + +#define MEMDUMP_SIZE 32 +#define MOD_DISABLE (RIO_NOREAD|RIO_NOWRITE|RIO_NOXPRINT) + + +struct rio_info { + int mode; /* Intr or polled, word/byte */ + spinlock_t RIOIntrSem; /* Interrupt thread sem */ + int current_chan; /* current channel */ + int RIOFailed; /* Not initialised ? */ + int RIOInstallAttempts; /* no. of rio-install() calls */ + int RIOLastPCISearch; /* status of last search */ + int RIONumHosts; /* Number of RIO Hosts */ + struct Host *RIOHosts; /* RIO Host values */ + struct Port **RIOPortp; /* RIO port values */ +/* +** 02.03.1999 ARG - ESIL 0820 fix +** We no longer use RIOBootMode +** + int RIOBootMode; * RIO boot mode * +** +*/ + int RIOPrintDisabled; /* RIO printing disabled ? */ + int RIOPrintLogState; /* RIO printing state ? */ + int RIOPolling; /* Polling ? */ +/* +** 09.12.1998 ARG - ESIL 0776 part fix +** The 'RIO_QUICK_CHECK' ioctl was using RIOHalted. +** The fix for this ESIL introduces another member (RIORtaDisCons) here to be +** updated in RIOConCon() - to keep track of RTA connections/disconnections. +** 'RIO_QUICK_CHECK' now returns the value of RIORtaDisCons. +*/ + int RIOHalted; /* halted ? */ + int RIORtaDisCons; /* RTA connections/disconnections */ + unsigned int RIOReadCheck; /* Rio read check */ + unsigned int RIONoMessage; /* To display message or not */ + unsigned int RIONumBootPkts; /* how many packets for an RTA */ + unsigned int RIOBootCount; /* size of RTA code */ + unsigned int RIOBooting; /* count of outstanding boots */ + unsigned int RIOSystemUp; /* Booted ?? */ + unsigned int RIOCounting; /* for counting interrupts */ + unsigned int RIOIntCount; /* # of intr since last check */ + unsigned int RIOTxCount; /* number of xmit intrs */ + unsigned int RIORxCount; /* number of rx intrs */ + unsigned int RIORupCount; /* number of rup intrs */ + int RIXTimer; + int RIOBufferSize; /* Buffersize */ + int RIOBufferMask; /* Buffersize */ + + int RIOFirstMajor; /* First host card's major no */ + + unsigned int RIOLastPortsMapped; /* highest port number known */ + unsigned int RIOFirstPortsMapped; /* lowest port number known */ + + unsigned int RIOLastPortsBooted; /* highest port number running */ + unsigned int RIOFirstPortsBooted; /* lowest port number running */ + + unsigned int RIOLastPortsOpened; /* highest port number running */ + unsigned int RIOFirstPortsOpened; /* lowest port number running */ + + /* Flag to say that the topology information has been changed. */ + unsigned int RIOQuickCheck; + unsigned int CdRegister; /* ??? */ + int RIOSignalProcess; /* Signalling process */ + int rio_debug; /* To debug ... */ + int RIODebugWait; /* For what ??? */ + int tpri; /* Thread prio */ + int tid; /* Thread id */ + unsigned int _RIO_Polled; /* Counter for polling */ + unsigned int _RIO_Interrupted; /* Counter for interrupt */ + int intr_tid; /* iointset return value */ + int TxEnSem; /* TxEnable Semaphore */ + + + struct Error RIOError; /* to Identify what went wrong */ + struct Conf RIOConf; /* Configuration ??? */ + struct ttystatics channel[RIO_PORTS]; /* channel information */ + char RIOBootPackets[1 + (SIXTY_FOUR_K / RTA_BOOT_DATA_SIZE)] + [RTA_BOOT_DATA_SIZE]; + struct Map RIOConnectTable[TOTAL_MAP_ENTRIES]; + struct Map RIOSavedTable[TOTAL_MAP_ENTRIES]; + + /* RTA to host binding table for master/slave operation */ + unsigned long RIOBindTab[MAX_RTA_BINDINGS]; + /* RTA memory dump variable */ + unsigned char RIOMemDump[MEMDUMP_SIZE]; + struct ModuleInfo RIOModuleTypes[MAX_MODULE_TYPES]; + +}; + + +#ifdef linux +#define debug(x) printk x +#else +#define debug(x) kkprintf x +#endif + + + +#define RIO_RESET_INT 0x7d80 + +#endif /* __riodrvr.h */ diff --git a/drivers/staging/generic_serial/rio/rioinfo.h b/drivers/staging/generic_serial/rio/rioinfo.h new file mode 100644 index 000000000000..42ff1e79d96f --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioinfo.h @@ -0,0 +1,92 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rioinfo.h +** SID : 1.2 +** Last Modified : 11/6/98 14:07:49 +** Retrieved : 11/6/98 14:07:50 +** +** ident @(#)rioinfo.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rioinfo_h +#define __rioinfo_h + +/* +** Host card data structure +*/ +struct RioHostInfo { + long location; /* RIO Card Base I/O address */ + long vector; /* RIO Card IRQ vector */ + int bus; /* ISA/EISA/MCA/PCI */ + int mode; /* pointer to host mode - INTERRUPT / POLLED */ + struct old_sgttyb + *Sg; /* pointer to default term characteristics */ +}; + + +/* Mode in rio device info */ +#define INTERRUPTED_MODE 0x01 /* Interrupt is generated */ +#define POLLED_MODE 0x02 /* No interrupt */ +#define AUTO_MODE 0x03 /* Auto mode */ + +#define WORD_ACCESS_MODE 0x10 /* Word Access Mode */ +#define BYTE_ACCESS_MODE 0x20 /* Byte Access Mode */ + + +/* Bus type that RIO supports */ +#define ISA_BUS 0x01 /* The card is ISA */ +#define EISA_BUS 0x02 /* The card is EISA */ +#define MCA_BUS 0x04 /* The card is MCA */ +#define PCI_BUS 0x08 /* The card is PCI */ + +/* +** 11.11.1998 ARG - ESIL ???? part fix +** Moved definition for 'CHAN' here from rioinfo.c (it is now +** called 'DEF_TERM_CHARACTERISTICS'). +*/ + +#define DEF_TERM_CHARACTERISTICS \ +{ \ + B19200, B19200, /* input and output speed */ \ + 'H' - '@', /* erase char */ \ + -1, /* 2nd erase char */ \ + 'U' - '@', /* kill char */ \ + ECHO | CRMOD, /* mode */ \ + 'C' - '@', /* interrupt character */ \ + '\\' - '@', /* quit char */ \ + 'Q' - '@', /* start char */ \ + 'S' - '@', /* stop char */ \ + 'D' - '@', /* EOF */ \ + -1, /* brk */ \ + (LCRTBS | LCRTERA | LCRTKIL | LCTLECH), /* local mode word */ \ + 'Z' - '@', /* process stop */ \ + 'Y' - '@', /* delayed stop */ \ + 'R' - '@', /* reprint line */ \ + 'O' - '@', /* flush output */ \ + 'W' - '@', /* word erase */ \ + 'V' - '@' /* literal next char */ \ +} + +#endif /* __rioinfo_h */ diff --git a/drivers/staging/generic_serial/rio/rioinit.c b/drivers/staging/generic_serial/rio/rioinit.c new file mode 100644 index 000000000000..24a282bb89d4 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioinit.c @@ -0,0 +1,421 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rioinit.c +** SID : 1.3 +** Last Modified : 11/6/98 10:33:43 +** Retrieved : 11/6/98 10:33:49 +** +** ident @(#)rioinit.c 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + + +#include "linux_compat.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" +#include "rio_linux.h" + +int RIOPCIinit(struct rio_info *p, int Mode); + +static int RIOScrub(int, u8 __iomem *, int); + + +/** +** RIOAssignAT : +** +** Fill out the fields in the p->RIOHosts structure now we know we know +** we have a board present. +** +** bits < 0 indicates 8 bit operation requested, +** bits > 0 indicates 16 bit operation. +*/ + +int RIOAssignAT(struct rio_info *p, int Base, void __iomem *virtAddr, int mode) +{ + int bits; + struct DpRam __iomem *cardp = (struct DpRam __iomem *)virtAddr; + + if ((Base < ONE_MEG) || (mode & BYTE_ACCESS_MODE)) + bits = BYTE_OPERATION; + else + bits = WORD_OPERATION; + + /* + ** Board has passed its scrub test. Fill in all the + ** transient stuff. + */ + p->RIOHosts[p->RIONumHosts].Caddr = virtAddr; + p->RIOHosts[p->RIONumHosts].CardP = virtAddr; + + /* + ** Revision 01 AT host cards don't support WORD operations, + */ + if (readb(&cardp->DpRevision) == 01) + bits = BYTE_OPERATION; + + p->RIOHosts[p->RIONumHosts].Type = RIO_AT; + p->RIOHosts[p->RIONumHosts].Copy = rio_copy_to_card; + /* set this later */ + p->RIOHosts[p->RIONumHosts].Slot = -1; + p->RIOHosts[p->RIONumHosts].Mode = SLOW_LINKS | SLOW_AT_BUS | bits; + writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE , + &p->RIOHosts[p->RIONumHosts].Control); + writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); + writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE, + &p->RIOHosts[p->RIONumHosts].Control); + writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt); + p->RIOHosts[p->RIONumHosts].UniqueNum = + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0])&0xFF)<<0)| + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1])&0xFF)<<8)| + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2])&0xFF)<<16)| + ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3])&0xFF)<<24); + rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Uniquenum 0x%x\n",p->RIOHosts[p->RIONumHosts].UniqueNum); + + p->RIONumHosts++; + rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Tests Passed at 0x%x\n", Base); + return(1); +} + +static u8 val[] = { +#ifdef VERY_LONG_TEST + 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, + 0xa5, 0xff, 0x5a, 0x00, 0xff, 0xc9, 0x36, +#endif + 0xff, 0x00, 0x00 }; + +#define TEST_END sizeof(val) + +/* +** RAM test a board. +** Nothing too complicated, just enough to check it out. +*/ +int RIOBoardTest(unsigned long paddr, void __iomem *caddr, unsigned char type, int slot) +{ + struct DpRam __iomem *DpRam = caddr; + void __iomem *ram[4]; + int size[4]; + int op, bank; + int nbanks; + + rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Reset host type=%d, DpRam=%p, slot=%d\n", + type, DpRam, slot); + + RIOHostReset(type, DpRam, slot); + + /* + ** Scrub the memory. This comes in several banks: + ** DPsram1 - 7000h bytes + ** DPsram2 - 200h bytes + ** DPsram3 - 7000h bytes + ** scratch - 1000h bytes + */ + + rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Setup ram/size arrays\n"); + + size[0] = DP_SRAM1_SIZE; + size[1] = DP_SRAM2_SIZE; + size[2] = DP_SRAM3_SIZE; + size[3] = DP_SCRATCH_SIZE; + + ram[0] = DpRam->DpSram1; + ram[1] = DpRam->DpSram2; + ram[2] = DpRam->DpSram3; + nbanks = (type == RIO_PCI) ? 3 : 4; + if (nbanks == 4) + ram[3] = DpRam->DpScratch; + + + if (nbanks == 3) { + rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Memory: %p(0x%x), %p(0x%x), %p(0x%x)\n", + ram[0], size[0], ram[1], size[1], ram[2], size[2]); + } else { + rio_dprintk (RIO_DEBUG_INIT, "RIO-init: %p(0x%x), %p(0x%x), %p(0x%x), %p(0x%x)\n", + ram[0], size[0], ram[1], size[1], ram[2], size[2], ram[3], size[3]); + } + + /* + ** This scrub operation will test for crosstalk between + ** banks. TEST_END is a magic number, and relates to the offset + ** within the 'val' array used by Scrub. + */ + for (op=0; opMapping[UnitId].Name, "UNKNOWN RTA X-XX", 17); + HostP->Mapping[UnitId].Name[12]='1'+(HostP-p->RIOHosts); + if ((UnitId+1) > 9) { + HostP->Mapping[UnitId].Name[14]='0'+((UnitId+1)/10); + HostP->Mapping[UnitId].Name[15]='0'+((UnitId+1)%10); + } + else { + HostP->Mapping[UnitId].Name[14]='1'+UnitId; + HostP->Mapping[UnitId].Name[15]=0; + } + return 0; +} + +#define RIO_RELEASE "Linux" +#define RELEASE_ID "1.0" + +static struct rioVersion stVersion; + +struct rioVersion *RIOVersid(void) +{ + strlcpy(stVersion.version, "RIO driver for linux V1.0", + sizeof(stVersion.version)); + strlcpy(stVersion.buildDate, __DATE__, + sizeof(stVersion.buildDate)); + + return &stVersion; +} + +void RIOHostReset(unsigned int Type, struct DpRam __iomem *DpRamP, unsigned int Slot) +{ + /* + ** Reset the Tpu + */ + rio_dprintk (RIO_DEBUG_INIT, "RIOHostReset: type 0x%x", Type); + switch ( Type ) { + case RIO_AT: + rio_dprintk (RIO_DEBUG_INIT, " (RIO_AT)\n"); + writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | BYTE_OPERATION | + SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl); + writeb(0xFF, &DpRamP->DpResetTpu); + udelay(3); + rio_dprintk (RIO_DEBUG_INIT, "RIOHostReset: Don't know if it worked. Try reset again\n"); + writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | + BYTE_OPERATION | SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl); + writeb(0xFF, &DpRamP->DpResetTpu); + udelay(3); + break; + case RIO_PCI: + rio_dprintk (RIO_DEBUG_INIT, " (RIO_PCI)\n"); + writeb(RIO_PCI_BOOT_FROM_RAM, &DpRamP->DpControl); + writeb(0xFF, &DpRamP->DpResetInt); + writeb(0xFF, &DpRamP->DpResetTpu); + udelay(100); + break; + default: + rio_dprintk (RIO_DEBUG_INIT, " (UNKNOWN)\n"); + break; + } + return; +} diff --git a/drivers/staging/generic_serial/rio/riointr.c b/drivers/staging/generic_serial/rio/riointr.c new file mode 100644 index 000000000000..2e71aecae206 --- /dev/null +++ b/drivers/staging/generic_serial/rio/riointr.c @@ -0,0 +1,645 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : riointr.c +** SID : 1.2 +** Last Modified : 11/6/98 10:33:44 +** Retrieved : 11/6/98 10:33:49 +** +** ident @(#)riointr.c 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +#include + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" + + +static void RIOReceive(struct rio_info *, struct Port *); + + +static char *firstchars(char *p, int nch) +{ + static char buf[2][128]; + static int t = 0; + t = !t; + memcpy(buf[t], p, nch); + buf[t][nch] = 0; + return buf[t]; +} + + +#define INCR( P, I ) ((P) = (((P)+(I)) & p->RIOBufferMask)) +/* Enable and start the transmission of packets */ +void RIOTxEnable(char *en) +{ + struct Port *PortP; + struct rio_info *p; + struct tty_struct *tty; + int c; + struct PKT __iomem *PacketP; + unsigned long flags; + + PortP = (struct Port *) en; + p = (struct rio_info *) PortP->p; + tty = PortP->gs.port.tty; + + + rio_dprintk(RIO_DEBUG_INTR, "tx port %d: %d chars queued.\n", PortP->PortNum, PortP->gs.xmit_cnt); + + if (!PortP->gs.xmit_cnt) + return; + + + /* This routine is an order of magnitude simpler than the specialix + version. One of the disadvantages is that this version will send + an incomplete packet (usually 64 bytes instead of 72) once for + every 4k worth of data. Let's just say that this won't influence + performance significantly..... */ + + rio_spin_lock_irqsave(&PortP->portSem, flags); + + while (can_add_transmit(&PacketP, PortP)) { + c = PortP->gs.xmit_cnt; + if (c > PKT_MAX_DATA_LEN) + c = PKT_MAX_DATA_LEN; + + /* Don't copy past the end of the source buffer */ + if (c > SERIAL_XMIT_SIZE - PortP->gs.xmit_tail) + c = SERIAL_XMIT_SIZE - PortP->gs.xmit_tail; + + { + int t; + t = (c > 10) ? 10 : c; + + rio_dprintk(RIO_DEBUG_INTR, "rio: tx port %d: copying %d chars: %s - %s\n", PortP->PortNum, c, firstchars(PortP->gs.xmit_buf + PortP->gs.xmit_tail, t), firstchars(PortP->gs.xmit_buf + PortP->gs.xmit_tail + c - t, t)); + } + /* If for one reason or another, we can't copy more data, + we're done! */ + if (c == 0) + break; + + rio_memcpy_toio(PortP->HostP->Caddr, PacketP->data, PortP->gs.xmit_buf + PortP->gs.xmit_tail, c); + /* udelay (1); */ + + writeb(c, &(PacketP->len)); + if (!(PortP->State & RIO_DELETED)) { + add_transmit(PortP); + /* + ** Count chars tx'd for port statistics reporting + */ + if (PortP->statsGather) + PortP->txchars += c; + } + PortP->gs.xmit_tail = (PortP->gs.xmit_tail + c) & (SERIAL_XMIT_SIZE - 1); + PortP->gs.xmit_cnt -= c; + } + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + + if (PortP->gs.xmit_cnt <= (PortP->gs.wakeup_chars + 2 * PKT_MAX_DATA_LEN)) + tty_wakeup(PortP->gs.port.tty); + +} + + +/* +** RIO Host Service routine. Does all the work traditionally associated with an +** interrupt. +*/ +static int RupIntr; +static int RxIntr; +static int TxIntr; + +void RIOServiceHost(struct rio_info *p, struct Host *HostP) +{ + rio_spin_lock(&HostP->HostLock); + if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { + static int t = 0; + rio_spin_unlock(&HostP->HostLock); + if ((t++ % 200) == 0) + rio_dprintk(RIO_DEBUG_INTR, "Interrupt but host not running. flags=%x.\n", (int) HostP->Flags); + return; + } + rio_spin_unlock(&HostP->HostLock); + + if (readw(&HostP->ParmMapP->rup_intr)) { + writew(0, &HostP->ParmMapP->rup_intr); + p->RIORupCount++; + RupIntr++; + rio_dprintk(RIO_DEBUG_INTR, "rio: RUP interrupt on host %Zd\n", HostP - p->RIOHosts); + RIOPollHostCommands(p, HostP); + } + + if (readw(&HostP->ParmMapP->rx_intr)) { + int port; + + writew(0, &HostP->ParmMapP->rx_intr); + p->RIORxCount++; + RxIntr++; + + rio_dprintk(RIO_DEBUG_INTR, "rio: RX interrupt on host %Zd\n", HostP - p->RIOHosts); + /* + ** Loop through every port. If the port is mapped into + ** the system ( i.e. has /dev/ttyXXXX associated ) then it is + ** worth checking. If the port isn't open, grab any packets + ** hanging on its receive queue and stuff them on the free + ** list; check for commands on the way. + */ + for (port = p->RIOFirstPortsBooted; port < p->RIOLastPortsBooted + PORTS_PER_RTA; port++) { + struct Port *PortP = p->RIOPortp[port]; + struct tty_struct *ttyP; + struct PKT __iomem *PacketP; + + /* + ** not mapped in - most of the RIOPortp[] information + ** has not been set up! + ** Optimise: ports come in bundles of eight. + */ + if (!PortP->Mapped) { + port += 7; + continue; /* with the next port */ + } + + /* + ** If the host board isn't THIS host board, check the next one. + ** optimise: ports come in bundles of eight. + */ + if (PortP->HostP != HostP) { + port += 7; + continue; + } + + /* + ** Let us see - is the port open? If not, then don't service it. + */ + if (!(PortP->PortState & PORT_ISOPEN)) { + continue; + } + + /* + ** find corresponding tty structure. The process of mapping + ** the ports puts these here. + */ + ttyP = PortP->gs.port.tty; + + /* + ** Lock the port before we begin working on it. + */ + rio_spin_lock(&PortP->portSem); + + /* + ** Process received data if there is any. + */ + if (can_remove_receive(&PacketP, PortP)) + RIOReceive(p, PortP); + + /* + ** If there is no data left to be read from the port, and + ** it's handshake bit is set, then we must clear the handshake, + ** so that that downstream RTA is re-enabled. + */ + if (!can_remove_receive(&PacketP, PortP) && (readw(&PortP->PhbP->handshake) == PHB_HANDSHAKE_SET)) { + /* + ** MAGIC! ( Basically, handshake the RX buffer, so that + ** the RTAs upstream can be re-enabled. ) + */ + rio_dprintk(RIO_DEBUG_INTR, "Set RX handshake bit\n"); + writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake); + } + rio_spin_unlock(&PortP->portSem); + } + } + + if (readw(&HostP->ParmMapP->tx_intr)) { + int port; + + writew(0, &HostP->ParmMapP->tx_intr); + + p->RIOTxCount++; + TxIntr++; + rio_dprintk(RIO_DEBUG_INTR, "rio: TX interrupt on host %Zd\n", HostP - p->RIOHosts); + + /* + ** Loop through every port. + ** If the port is mapped into the system ( i.e. has /dev/ttyXXXX + ** associated ) then it is worth checking. + */ + for (port = p->RIOFirstPortsBooted; port < p->RIOLastPortsBooted + PORTS_PER_RTA; port++) { + struct Port *PortP = p->RIOPortp[port]; + struct tty_struct *ttyP; + struct PKT __iomem *PacketP; + + /* + ** not mapped in - most of the RIOPortp[] information + ** has not been set up! + */ + if (!PortP->Mapped) { + port += 7; + continue; /* with the next port */ + } + + /* + ** If the host board isn't running, then its data structures + ** are no use to us - continue quietly. + */ + if (PortP->HostP != HostP) { + port += 7; + continue; /* with the next port */ + } + + /* + ** Let us see - is the port open? If not, then don't service it. + */ + if (!(PortP->PortState & PORT_ISOPEN)) { + continue; + } + + rio_dprintk(RIO_DEBUG_INTR, "rio: Looking into port %d.\n", port); + /* + ** Lock the port before we begin working on it. + */ + rio_spin_lock(&PortP->portSem); + + /* + ** If we can't add anything to the transmit queue, then + ** we need do none of this processing. + */ + if (!can_add_transmit(&PacketP, PortP)) { + rio_dprintk(RIO_DEBUG_INTR, "Can't add to port, so skipping.\n"); + rio_spin_unlock(&PortP->portSem); + continue; + } + + /* + ** find corresponding tty structure. The process of mapping + ** the ports puts these here. + */ + ttyP = PortP->gs.port.tty; + /* If ttyP is NULL, the port is getting closed. Forget about it. */ + if (!ttyP) { + rio_dprintk(RIO_DEBUG_INTR, "no tty, so skipping.\n"); + rio_spin_unlock(&PortP->portSem); + continue; + } + /* + ** If there is more room available we start up the transmit + ** data process again. This can be direct I/O, if the cookmode + ** is set to COOK_RAW or COOK_MEDIUM, or will be a call to the + ** riotproc( T_OUTPUT ) if we are in COOK_WELL mode, to fetch + ** characters via the line discipline. We must always call + ** the line discipline, + ** so that user input characters can be echoed correctly. + ** + ** ++++ Update +++++ + ** With the advent of double buffering, we now see if + ** TxBufferOut-In is non-zero. If so, then we copy a packet + ** to the output place, and set it going. If this empties + ** the buffer, then we must issue a wakeup( ) on OUT. + ** If it frees space in the buffer then we must issue + ** a wakeup( ) on IN. + ** + ** ++++ Extra! Extra! If PortP->WflushFlag is set, then we + ** have to send a WFLUSH command down the PHB, to mark the + ** end point of a WFLUSH. We also need to clear out any + ** data from the double buffer! ( note that WflushFlag is a + ** *count* of the number of WFLUSH commands outstanding! ) + ** + ** ++++ And there's more! + ** If an RTA is powered off, then on again, and rebooted, + ** whilst it has ports open, then we need to re-open the ports. + ** ( reasonable enough ). We can't do this when we spot the + ** re-boot, in interrupt time, because the queue is probably + ** full. So, when we come in here, we need to test if any + ** ports are in this condition, and re-open the port before + ** we try to send any more data to it. Now, the re-booted + ** RTA will be discarding packets from the PHB until it + ** receives this open packet, but don't worry tooo much + ** about that. The one thing that is interesting is the + ** combination of this effect and the WFLUSH effect! + */ + /* For now don't handle RTA reboots. -- REW. + Reenabled. Otherwise RTA reboots didn't work. Duh. -- REW */ + if (PortP->MagicFlags) { + if (PortP->MagicFlags & MAGIC_REBOOT) { + /* + ** well, the RTA has been rebooted, and there is room + ** on its queue to add the open packet that is required. + ** + ** The messy part of this line is trying to decide if + ** we need to call the Param function as a tty or as + ** a modem. + ** DONT USE CLOCAL AS A TEST FOR THIS! + ** + ** If we can't param the port, then move on to the + ** next port. + */ + PortP->InUse = NOT_INUSE; + + rio_spin_unlock(&PortP->portSem); + if (RIOParam(PortP, RIOC_OPEN, ((PortP->Cor2Copy & (RIOC_COR2_RTSFLOW | RIOC_COR2_CTSFLOW)) == (RIOC_COR2_RTSFLOW | RIOC_COR2_CTSFLOW)) ? 1 : 0, DONT_SLEEP) == RIO_FAIL) + continue; /* with next port */ + rio_spin_lock(&PortP->portSem); + PortP->MagicFlags &= ~MAGIC_REBOOT; + } + + /* + ** As mentioned above, this is a tacky hack to cope + ** with WFLUSH + */ + if (PortP->WflushFlag) { + rio_dprintk(RIO_DEBUG_INTR, "Want to WFLUSH mark this port\n"); + + if (PortP->InUse) + rio_dprintk(RIO_DEBUG_INTR, "FAILS - PORT IS IN USE\n"); + } + + while (PortP->WflushFlag && can_add_transmit(&PacketP, PortP) && (PortP->InUse == NOT_INUSE)) { + int p; + struct PktCmd __iomem *PktCmdP; + + rio_dprintk(RIO_DEBUG_INTR, "Add WFLUSH marker to data queue\n"); + /* + ** make it look just like a WFLUSH command + */ + PktCmdP = (struct PktCmd __iomem *) &PacketP->data[0]; + + writeb(RIOC_WFLUSH, &PktCmdP->Command); + + p = PortP->HostPort % (u16) PORTS_PER_RTA; + + /* + ** If second block of ports for 16 port RTA, add 8 + ** to index 8-15. + */ + if (PortP->SecondBlock) + p += PORTS_PER_RTA; + + writeb(p, &PktCmdP->PhbNum); + + /* + ** to make debuggery easier + */ + writeb('W', &PacketP->data[2]); + writeb('F', &PacketP->data[3]); + writeb('L', &PacketP->data[4]); + writeb('U', &PacketP->data[5]); + writeb('S', &PacketP->data[6]); + writeb('H', &PacketP->data[7]); + writeb(' ', &PacketP->data[8]); + writeb('0' + PortP->WflushFlag, &PacketP->data[9]); + writeb(' ', &PacketP->data[10]); + writeb(' ', &PacketP->data[11]); + writeb('\0', &PacketP->data[12]); + + /* + ** its two bytes long! + */ + writeb(PKT_CMD_BIT | 2, &PacketP->len); + + /* + ** queue it! + */ + if (!(PortP->State & RIO_DELETED)) { + add_transmit(PortP); + /* + ** Count chars tx'd for port statistics reporting + */ + if (PortP->statsGather) + PortP->txchars += 2; + } + + if (--(PortP->WflushFlag) == 0) { + PortP->MagicFlags &= ~MAGIC_FLUSH; + } + + rio_dprintk(RIO_DEBUG_INTR, "Wflush count now stands at %d\n", PortP->WflushFlag); + } + if (PortP->MagicFlags & MORE_OUTPUT_EYGOR) { + if (PortP->MagicFlags & MAGIC_FLUSH) { + PortP->MagicFlags |= MORE_OUTPUT_EYGOR; + } else { + if (!can_add_transmit(&PacketP, PortP)) { + rio_spin_unlock(&PortP->portSem); + continue; + } + rio_spin_unlock(&PortP->portSem); + RIOTxEnable((char *) PortP); + rio_spin_lock(&PortP->portSem); + PortP->MagicFlags &= ~MORE_OUTPUT_EYGOR; + } + } + } + + + /* + ** If we can't add anything to the transmit queue, then + ** we need do none of the remaining processing. + */ + if (!can_add_transmit(&PacketP, PortP)) { + rio_spin_unlock(&PortP->portSem); + continue; + } + + rio_spin_unlock(&PortP->portSem); + RIOTxEnable((char *) PortP); + } + } +} + +/* +** Routine for handling received data for tty drivers +*/ +static void RIOReceive(struct rio_info *p, struct Port *PortP) +{ + struct tty_struct *TtyP; + unsigned short transCount; + struct PKT __iomem *PacketP; + register unsigned int DataCnt; + unsigned char __iomem *ptr; + unsigned char *buf; + int copied = 0; + + static int intCount, RxIntCnt; + + /* + ** The receive data process is to remove packets from the + ** PHB until there aren't any more or the current cblock + ** is full. When this occurs, there will be some left over + ** data in the packet, that we must do something with. + ** As we haven't unhooked the packet from the read list + ** yet, we can just leave the packet there, having first + ** made a note of how far we got. This means that we need + ** a pointer per port saying where we start taking the + ** data from - this will normally be zero, but when we + ** run out of space it will be set to the offset of the + ** next byte to copy from the packet data area. The packet + ** length field is decremented by the number of bytes that + ** we successfully removed from the packet. When this reaches + ** zero, we reset the offset pointer to be zero, and free + ** the packet from the front of the queue. + */ + + intCount++; + + TtyP = PortP->gs.port.tty; + if (!TtyP) { + rio_dprintk(RIO_DEBUG_INTR, "RIOReceive: tty is null. \n"); + return; + } + + if (PortP->State & RIO_THROTTLE_RX) { + rio_dprintk(RIO_DEBUG_INTR, "RIOReceive: Throttled. Can't handle more input.\n"); + return; + } + + if (PortP->State & RIO_DELETED) { + while (can_remove_receive(&PacketP, PortP)) { + remove_receive(PortP); + put_free_end(PortP->HostP, PacketP); + } + } else { + /* + ** loop, just so long as: + ** i ) there's some data ( i.e. can_remove_receive ) + ** ii ) we haven't been blocked + ** iii ) there's somewhere to put the data + ** iv ) we haven't outstayed our welcome + */ + transCount = 1; + while (can_remove_receive(&PacketP, PortP) + && transCount) { + RxIntCnt++; + + /* + ** check that it is not a command! + */ + if (readb(&PacketP->len) & PKT_CMD_BIT) { + rio_dprintk(RIO_DEBUG_INTR, "RIO: unexpected command packet received on PHB\n"); + /* rio_dprint(RIO_DEBUG_INTR, (" sysport = %d\n", p->RIOPortp->PortNum)); */ + rio_dprintk(RIO_DEBUG_INTR, " dest_unit = %d\n", readb(&PacketP->dest_unit)); + rio_dprintk(RIO_DEBUG_INTR, " dest_port = %d\n", readb(&PacketP->dest_port)); + rio_dprintk(RIO_DEBUG_INTR, " src_unit = %d\n", readb(&PacketP->src_unit)); + rio_dprintk(RIO_DEBUG_INTR, " src_port = %d\n", readb(&PacketP->src_port)); + rio_dprintk(RIO_DEBUG_INTR, " len = %d\n", readb(&PacketP->len)); + rio_dprintk(RIO_DEBUG_INTR, " control = %d\n", readb(&PacketP->control)); + rio_dprintk(RIO_DEBUG_INTR, " csum = %d\n", readw(&PacketP->csum)); + rio_dprintk(RIO_DEBUG_INTR, " data bytes: "); + for (DataCnt = 0; DataCnt < PKT_MAX_DATA_LEN; DataCnt++) + rio_dprintk(RIO_DEBUG_INTR, "%d\n", readb(&PacketP->data[DataCnt])); + remove_receive(PortP); + put_free_end(PortP->HostP, PacketP); + continue; /* with next packet */ + } + + /* + ** How many characters can we move 'upstream' ? + ** + ** Determine the minimum of the amount of data + ** available and the amount of space in which to + ** put it. + ** + ** 1. Get the packet length by masking 'len' + ** for only the length bits. + ** 2. Available space is [buffer size] - [space used] + ** + ** Transfer count is the minimum of packet length + ** and available space. + */ + + transCount = tty_buffer_request_room(TtyP, readb(&PacketP->len) & PKT_LEN_MASK); + rio_dprintk(RIO_DEBUG_REC, "port %d: Copy %d bytes\n", PortP->PortNum, transCount); + /* + ** To use the following 'kkprintfs' for debugging - change the '#undef' + ** to '#define', (this is the only place ___DEBUG_IT___ occurs in the + ** driver). + */ + ptr = (unsigned char __iomem *) PacketP->data + PortP->RxDataStart; + + tty_prepare_flip_string(TtyP, &buf, transCount); + rio_memcpy_fromio(buf, ptr, transCount); + PortP->RxDataStart += transCount; + writeb(readb(&PacketP->len)-transCount, &PacketP->len); + copied += transCount; + + + + if (readb(&PacketP->len) == 0) { + /* + ** If we have emptied the packet, then we can + ** free it, and reset the start pointer for + ** the next packet. + */ + remove_receive(PortP); + put_free_end(PortP->HostP, PacketP); + PortP->RxDataStart = 0; + } + } + } + if (copied) { + rio_dprintk(RIO_DEBUG_REC, "port %d: pushing tty flip buffer: %d total bytes copied.\n", PortP->PortNum, copied); + tty_flip_buffer_push(TtyP); + } + + return; +} + diff --git a/drivers/staging/generic_serial/rio/rioioctl.h b/drivers/staging/generic_serial/rio/rioioctl.h new file mode 100644 index 000000000000..e8af5b30519e --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioioctl.h @@ -0,0 +1,57 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rioioctl.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:13 +** Retrieved : 11/6/98 11:34:22 +** +** ident @(#)rioioctl.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rioioctl_h__ +#define __rioioctl_h__ + +/* +** RIO device driver - user ioctls and associated structures. +*/ + +struct portStats { + int port; + int gather; + unsigned long txchars; + unsigned long rxchars; + unsigned long opens; + unsigned long closes; + unsigned long ioctls; +}; + +#define RIOC ('R'<<8)|('i'<<16)|('o'<<24) + +#define RIO_QUICK_CHECK (RIOC | 105) +#define RIO_GATHER_PORT_STATS (RIOC | 193) +#define RIO_RESET_PORT_STATS (RIOC | 194) +#define RIO_GET_PORT_STATS (RIOC | 195) + +#endif /* __rioioctl_h__ */ diff --git a/drivers/staging/generic_serial/rio/rioparam.c b/drivers/staging/generic_serial/rio/rioparam.c new file mode 100644 index 000000000000..6415f3f32a72 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioparam.c @@ -0,0 +1,663 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rioparam.c +** SID : 1.3 +** Last Modified : 11/6/98 10:33:45 +** Retrieved : 11/6/98 10:33:50 +** +** ident @(#)rioparam.c 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" +#include "param.h" + + + +/* +** The Scam, based on email from jeremyr@bugs.specialix.co.uk.... +** +** To send a command on a particular port, you put a packet with the +** command bit set onto the port. The command bit is in the len field, +** and gets ORed in with the actual byte count. +** +** When you send a packet with the command bit set the first +** data byte (data[0]) is interpreted as the command to execute. +** It also governs what data structure overlay should accompany the packet. +** Commands are defined in cirrus/cirrus.h +** +** If you want the command to pre-emt data already on the queue for the +** port, set the pre-emptive bit in conjunction with the command bit. +** It is not defined what will happen if you set the preemptive bit +** on a packet that is NOT a command. +** +** Pre-emptive commands should be queued at the head of the queue using +** add_start(), whereas normal commands and data are enqueued using +** add_end(). +** +** Most commands do not use the remaining bytes in the data array. The +** exceptions are OPEN MOPEN and CONFIG. (NB. As with the SI CONFIG and +** OPEN are currently analogous). With these three commands the following +** 11 data bytes are all used to pass config information such as baud rate etc. +** The fields are also defined in cirrus.h. Some contain straightforward +** information such as the transmit XON character. Two contain the transmit and +** receive baud rates respectively. For most baud rates there is a direct +** mapping between the rates defined in and the byte in the +** packet. There are additional (non UNIX-standard) rates defined in +** /u/dos/rio/cirrus/h/brates.h. +** +** The rest of the data fields contain approximations to the Cirrus registers +** that are used to program number of bits etc. Each registers bit fields is +** defined in cirrus.h. +** +** NB. Only use those bits that are defined as being driver specific +** or common to the RTA and the driver. +** +** All commands going from RTA->Host will be dealt with by the Host code - you +** will never see them. As with the SI there will be three fields to look out +** for in each phb (not yet defined - needs defining a.s.a.p). +** +** modem_status - current state of handshake pins. +** +** port_status - current port status - equivalent to hi_stat for SI, indicates +** if port is IDLE_OPEN, IDLE_CLOSED etc. +** +** break_status - bit X set if break has been received. +** +** Happy hacking. +** +*/ + +/* +** RIOParam is used to open or configure a port. You pass it a PortP, +** which will have a tty struct attached to it. You also pass a command, +** either OPEN or CONFIG. The port's setup is taken from the t_ fields +** of the tty struct inside the PortP, and the port is either opened +** or re-configured. You must also tell RIOParam if the device is a modem +** device or not (i.e. top bit of minor number set or clear - take special +** care when deciding on this!). +** RIOParam neither flushes nor waits for drain, and is NOT preemptive. +** +** RIOParam assumes it will be called at splrio(), and also assumes +** that CookMode is set correctly in the port structure. +** +** NB. for MPX +** tty lock must NOT have been previously acquired. +*/ +int RIOParam(struct Port *PortP, int cmd, int Modem, int SleepFlag) +{ + struct tty_struct *TtyP; + int retval; + struct phb_param __iomem *phb_param_ptr; + struct PKT __iomem *PacketP; + int res; + u8 Cor1 = 0, Cor2 = 0, Cor4 = 0, Cor5 = 0; + u8 TxXon = 0, TxXoff = 0, RxXon = 0, RxXoff = 0; + u8 LNext = 0, TxBaud = 0, RxBaud = 0; + int retries = 0xff; + unsigned long flags; + + func_enter(); + + TtyP = PortP->gs.port.tty; + + rio_dprintk(RIO_DEBUG_PARAM, "RIOParam: Port:%d cmd:%d Modem:%d SleepFlag:%d Mapped: %d, tty=%p\n", PortP->PortNum, cmd, Modem, SleepFlag, PortP->Mapped, TtyP); + + if (!TtyP) { + rio_dprintk(RIO_DEBUG_PARAM, "Can't call rioparam with null tty.\n"); + + func_exit(); + + return RIO_FAIL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + + if (cmd == RIOC_OPEN) { + /* + ** If the port is set to store or lock the parameters, and it is + ** paramed with OPEN, we want to restore the saved port termio, but + ** only if StoredTermio has been saved, i.e. NOT 1st open after reboot. + */ + } + + /* + ** wait for space + */ + while (!(res = can_add_transmit(&PacketP, PortP)) || (PortP->InUse != NOT_INUSE)) { + if (retries-- <= 0) { + break; + } + if (PortP->InUse != NOT_INUSE) { + rio_dprintk(RIO_DEBUG_PARAM, "Port IN_USE for pre-emptive command\n"); + } + + if (!res) { + rio_dprintk(RIO_DEBUG_PARAM, "Port has no space on transmit queue\n"); + } + + if (SleepFlag != OK_TO_SLEEP) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + func_exit(); + + return RIO_FAIL; + } + + rio_dprintk(RIO_DEBUG_PARAM, "wait for can_add_transmit\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + retval = RIODelay(PortP, HUNDRED_MS); + rio_spin_lock_irqsave(&PortP->portSem, flags); + if (retval == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_PARAM, "wait for can_add_transmit broken by signal\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + func_exit(); + return -EINTR; + } + if (PortP->State & RIO_DELETED) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + func_exit(); + return 0; + } + } + + if (!res) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + func_exit(); + + return RIO_FAIL; + } + + rio_dprintk(RIO_DEBUG_PARAM, "can_add_transmit() returns %x\n", res); + rio_dprintk(RIO_DEBUG_PARAM, "Packet is %p\n", PacketP); + + phb_param_ptr = (struct phb_param __iomem *) PacketP->data; + + + switch (TtyP->termios->c_cflag & CSIZE) { + case CS5: + { + rio_dprintk(RIO_DEBUG_PARAM, "5 bit data\n"); + Cor1 |= RIOC_COR1_5BITS; + break; + } + case CS6: + { + rio_dprintk(RIO_DEBUG_PARAM, "6 bit data\n"); + Cor1 |= RIOC_COR1_6BITS; + break; + } + case CS7: + { + rio_dprintk(RIO_DEBUG_PARAM, "7 bit data\n"); + Cor1 |= RIOC_COR1_7BITS; + break; + } + case CS8: + { + rio_dprintk(RIO_DEBUG_PARAM, "8 bit data\n"); + Cor1 |= RIOC_COR1_8BITS; + break; + } + } + + if (TtyP->termios->c_cflag & CSTOPB) { + rio_dprintk(RIO_DEBUG_PARAM, "2 stop bits\n"); + Cor1 |= RIOC_COR1_2STOP; + } else { + rio_dprintk(RIO_DEBUG_PARAM, "1 stop bit\n"); + Cor1 |= RIOC_COR1_1STOP; + } + + if (TtyP->termios->c_cflag & PARENB) { + rio_dprintk(RIO_DEBUG_PARAM, "Enable parity\n"); + Cor1 |= RIOC_COR1_NORMAL; + } else { + rio_dprintk(RIO_DEBUG_PARAM, "Disable parity\n"); + Cor1 |= RIOC_COR1_NOP; + } + if (TtyP->termios->c_cflag & PARODD) { + rio_dprintk(RIO_DEBUG_PARAM, "Odd parity\n"); + Cor1 |= RIOC_COR1_ODD; + } else { + rio_dprintk(RIO_DEBUG_PARAM, "Even parity\n"); + Cor1 |= RIOC_COR1_EVEN; + } + + /* + ** COR 2 + */ + if (TtyP->termios->c_iflag & IXON) { + rio_dprintk(RIO_DEBUG_PARAM, "Enable start/stop output control\n"); + Cor2 |= RIOC_COR2_IXON; + } else { + if (PortP->Config & RIO_IXON) { + rio_dprintk(RIO_DEBUG_PARAM, "Force enable start/stop output control\n"); + Cor2 |= RIOC_COR2_IXON; + } else + rio_dprintk(RIO_DEBUG_PARAM, "IXON has been disabled.\n"); + } + + if (TtyP->termios->c_iflag & IXANY) { + if (PortP->Config & RIO_IXANY) { + rio_dprintk(RIO_DEBUG_PARAM, "Enable any key to restart output\n"); + Cor2 |= RIOC_COR2_IXANY; + } else + rio_dprintk(RIO_DEBUG_PARAM, "IXANY has been disabled due to sanity reasons.\n"); + } + + if (TtyP->termios->c_iflag & IXOFF) { + rio_dprintk(RIO_DEBUG_PARAM, "Enable start/stop input control 2\n"); + Cor2 |= RIOC_COR2_IXOFF; + } + + if (TtyP->termios->c_cflag & HUPCL) { + rio_dprintk(RIO_DEBUG_PARAM, "Hangup on last close\n"); + Cor2 |= RIOC_COR2_HUPCL; + } + + if (C_CRTSCTS(TtyP)) { + rio_dprintk(RIO_DEBUG_PARAM, "Rx hardware flow control enabled\n"); + Cor2 |= RIOC_COR2_CTSFLOW; + Cor2 |= RIOC_COR2_RTSFLOW; + } else { + rio_dprintk(RIO_DEBUG_PARAM, "Rx hardware flow control disabled\n"); + Cor2 &= ~RIOC_COR2_CTSFLOW; + Cor2 &= ~RIOC_COR2_RTSFLOW; + } + + + if (TtyP->termios->c_cflag & CLOCAL) { + rio_dprintk(RIO_DEBUG_PARAM, "Local line\n"); + } else { + rio_dprintk(RIO_DEBUG_PARAM, "Possible Modem line\n"); + } + + /* + ** COR 4 (there is no COR 3) + */ + if (TtyP->termios->c_iflag & IGNBRK) { + rio_dprintk(RIO_DEBUG_PARAM, "Ignore break condition\n"); + Cor4 |= RIOC_COR4_IGNBRK; + } + if (!(TtyP->termios->c_iflag & BRKINT)) { + rio_dprintk(RIO_DEBUG_PARAM, "Break generates NULL condition\n"); + Cor4 |= RIOC_COR4_NBRKINT; + } else { + rio_dprintk(RIO_DEBUG_PARAM, "Interrupt on break condition\n"); + } + + if (TtyP->termios->c_iflag & INLCR) { + rio_dprintk(RIO_DEBUG_PARAM, "Map newline to carriage return on input\n"); + Cor4 |= RIOC_COR4_INLCR; + } + + if (TtyP->termios->c_iflag & IGNCR) { + rio_dprintk(RIO_DEBUG_PARAM, "Ignore carriage return on input\n"); + Cor4 |= RIOC_COR4_IGNCR; + } + + if (TtyP->termios->c_iflag & ICRNL) { + rio_dprintk(RIO_DEBUG_PARAM, "Map carriage return to newline on input\n"); + Cor4 |= RIOC_COR4_ICRNL; + } + if (TtyP->termios->c_iflag & IGNPAR) { + rio_dprintk(RIO_DEBUG_PARAM, "Ignore characters with parity errors\n"); + Cor4 |= RIOC_COR4_IGNPAR; + } + if (TtyP->termios->c_iflag & PARMRK) { + rio_dprintk(RIO_DEBUG_PARAM, "Mark parity errors\n"); + Cor4 |= RIOC_COR4_PARMRK; + } + + /* + ** Set the RAISEMOD flag to ensure that the modem lines are raised + ** on reception of a config packet. + ** The download code handles the zero baud condition. + */ + Cor4 |= RIOC_COR4_RAISEMOD; + + /* + ** COR 5 + */ + + Cor5 = RIOC_COR5_CMOE; + + /* + ** Set to monitor tbusy/tstop (or not). + */ + + if (PortP->MonitorTstate) + Cor5 |= RIOC_COR5_TSTATE_ON; + else + Cor5 |= RIOC_COR5_TSTATE_OFF; + + /* + ** Could set LNE here if you wanted LNext processing. SVR4 will use it. + */ + if (TtyP->termios->c_iflag & ISTRIP) { + rio_dprintk(RIO_DEBUG_PARAM, "Strip input characters\n"); + if (!(PortP->State & RIO_TRIAD_MODE)) { + Cor5 |= RIOC_COR5_ISTRIP; + } + } + + if (TtyP->termios->c_oflag & ONLCR) { + rio_dprintk(RIO_DEBUG_PARAM, "Map newline to carriage-return, newline on output\n"); + if (PortP->CookMode == COOK_MEDIUM) + Cor5 |= RIOC_COR5_ONLCR; + } + if (TtyP->termios->c_oflag & OCRNL) { + rio_dprintk(RIO_DEBUG_PARAM, "Map carriage return to newline on output\n"); + if (PortP->CookMode == COOK_MEDIUM) + Cor5 |= RIOC_COR5_OCRNL; + } + if ((TtyP->termios->c_oflag & TABDLY) == TAB3) { + rio_dprintk(RIO_DEBUG_PARAM, "Tab delay 3 set\n"); + if (PortP->CookMode == COOK_MEDIUM) + Cor5 |= RIOC_COR5_TAB3; + } + + /* + ** Flow control bytes. + */ + TxXon = TtyP->termios->c_cc[VSTART]; + TxXoff = TtyP->termios->c_cc[VSTOP]; + RxXon = TtyP->termios->c_cc[VSTART]; + RxXoff = TtyP->termios->c_cc[VSTOP]; + /* + ** LNEXT byte + */ + LNext = 0; + + /* + ** Baud rate bytes + */ + rio_dprintk(RIO_DEBUG_PARAM, "Mapping of rx/tx baud %x (%x)\n", TtyP->termios->c_cflag, CBAUD); + + switch (TtyP->termios->c_cflag & CBAUD) { +#define e(b) case B ## b : RxBaud = TxBaud = RIO_B ## b ;break + e(50); + e(75); + e(110); + e(134); + e(150); + e(200); + e(300); + e(600); + e(1200); + e(1800); + e(2400); + e(4800); + e(9600); + e(19200); + e(38400); + e(57600); + e(115200); /* e(230400);e(460800); e(921600); */ + } + + rio_dprintk(RIO_DEBUG_PARAM, "tx baud 0x%x, rx baud 0x%x\n", TxBaud, RxBaud); + + + /* + ** Leftovers + */ + if (TtyP->termios->c_cflag & CREAD) + rio_dprintk(RIO_DEBUG_PARAM, "Enable receiver\n"); +#ifdef RCV1EN + if (TtyP->termios->c_cflag & RCV1EN) + rio_dprintk(RIO_DEBUG_PARAM, "RCV1EN (?)\n"); +#endif +#ifdef XMT1EN + if (TtyP->termios->c_cflag & XMT1EN) + rio_dprintk(RIO_DEBUG_PARAM, "XMT1EN (?)\n"); +#endif + if (TtyP->termios->c_lflag & ISIG) + rio_dprintk(RIO_DEBUG_PARAM, "Input character signal generating enabled\n"); + if (TtyP->termios->c_lflag & ICANON) + rio_dprintk(RIO_DEBUG_PARAM, "Canonical input: erase and kill enabled\n"); + if (TtyP->termios->c_lflag & XCASE) + rio_dprintk(RIO_DEBUG_PARAM, "Canonical upper/lower presentation\n"); + if (TtyP->termios->c_lflag & ECHO) + rio_dprintk(RIO_DEBUG_PARAM, "Enable input echo\n"); + if (TtyP->termios->c_lflag & ECHOE) + rio_dprintk(RIO_DEBUG_PARAM, "Enable echo erase\n"); + if (TtyP->termios->c_lflag & ECHOK) + rio_dprintk(RIO_DEBUG_PARAM, "Enable echo kill\n"); + if (TtyP->termios->c_lflag & ECHONL) + rio_dprintk(RIO_DEBUG_PARAM, "Enable echo newline\n"); + if (TtyP->termios->c_lflag & NOFLSH) + rio_dprintk(RIO_DEBUG_PARAM, "Disable flush after interrupt or quit\n"); +#ifdef TOSTOP + if (TtyP->termios->c_lflag & TOSTOP) + rio_dprintk(RIO_DEBUG_PARAM, "Send SIGTTOU for background output\n"); +#endif +#ifdef XCLUDE + if (TtyP->termios->c_lflag & XCLUDE) + rio_dprintk(RIO_DEBUG_PARAM, "Exclusive use of this line\n"); +#endif + if (TtyP->termios->c_iflag & IUCLC) + rio_dprintk(RIO_DEBUG_PARAM, "Map uppercase to lowercase on input\n"); + if (TtyP->termios->c_oflag & OPOST) + rio_dprintk(RIO_DEBUG_PARAM, "Enable output post-processing\n"); + if (TtyP->termios->c_oflag & OLCUC) + rio_dprintk(RIO_DEBUG_PARAM, "Map lowercase to uppercase on output\n"); + if (TtyP->termios->c_oflag & ONOCR) + rio_dprintk(RIO_DEBUG_PARAM, "No carriage return output at column 0\n"); + if (TtyP->termios->c_oflag & ONLRET) + rio_dprintk(RIO_DEBUG_PARAM, "Newline performs carriage return function\n"); + if (TtyP->termios->c_oflag & OFILL) + rio_dprintk(RIO_DEBUG_PARAM, "Use fill characters for delay\n"); + if (TtyP->termios->c_oflag & OFDEL) + rio_dprintk(RIO_DEBUG_PARAM, "Fill character is DEL\n"); + if (TtyP->termios->c_oflag & NLDLY) + rio_dprintk(RIO_DEBUG_PARAM, "Newline delay set\n"); + if (TtyP->termios->c_oflag & CRDLY) + rio_dprintk(RIO_DEBUG_PARAM, "Carriage return delay set\n"); + if (TtyP->termios->c_oflag & TABDLY) + rio_dprintk(RIO_DEBUG_PARAM, "Tab delay set\n"); + /* + ** These things are kind of useful in a later life! + */ + PortP->Cor2Copy = Cor2; + + if (PortP->State & RIO_DELETED) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + func_exit(); + + return RIO_FAIL; + } + + /* + ** Actually write the info into the packet to be sent + */ + writeb(cmd, &phb_param_ptr->Cmd); + writeb(Cor1, &phb_param_ptr->Cor1); + writeb(Cor2, &phb_param_ptr->Cor2); + writeb(Cor4, &phb_param_ptr->Cor4); + writeb(Cor5, &phb_param_ptr->Cor5); + writeb(TxXon, &phb_param_ptr->TxXon); + writeb(RxXon, &phb_param_ptr->RxXon); + writeb(TxXoff, &phb_param_ptr->TxXoff); + writeb(RxXoff, &phb_param_ptr->RxXoff); + writeb(LNext, &phb_param_ptr->LNext); + writeb(TxBaud, &phb_param_ptr->TxBaud); + writeb(RxBaud, &phb_param_ptr->RxBaud); + + /* + ** Set the length/command field + */ + writeb(12 | PKT_CMD_BIT, &PacketP->len); + + /* + ** The packet is formed - now, whack it off + ** to its final destination: + */ + add_transmit(PortP); + /* + ** Count characters transmitted for port statistics reporting + */ + if (PortP->statsGather) + PortP->txchars += 12; + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + + rio_dprintk(RIO_DEBUG_PARAM, "add_transmit returned.\n"); + /* + ** job done. + */ + func_exit(); + + return 0; +} + + +/* +** We can add another packet to a transmit queue if the packet pointer pointed +** to by the TxAdd pointer has PKT_IN_USE clear in its address. +*/ +int can_add_transmit(struct PKT __iomem **PktP, struct Port *PortP) +{ + struct PKT __iomem *tp; + + *PktP = tp = (struct PKT __iomem *) RIO_PTR(PortP->Caddr, readw(PortP->TxAdd)); + + return !((unsigned long) tp & PKT_IN_USE); +} + +/* +** To add a packet to the queue, you set the PKT_IN_USE bit in the address, +** and then move the TxAdd pointer along one position to point to the next +** packet pointer. You must wrap the pointer from the end back to the start. +*/ +void add_transmit(struct Port *PortP) +{ + if (readw(PortP->TxAdd) & PKT_IN_USE) { + rio_dprintk(RIO_DEBUG_PARAM, "add_transmit: Packet has been stolen!"); + } + writew(readw(PortP->TxAdd) | PKT_IN_USE, PortP->TxAdd); + PortP->TxAdd = (PortP->TxAdd == PortP->TxEnd) ? PortP->TxStart : PortP->TxAdd + 1; + writew(RIO_OFF(PortP->Caddr, PortP->TxAdd), &PortP->PhbP->tx_add); +} + +/**************************************** + * Put a packet onto the end of the + * free list + ****************************************/ +void put_free_end(struct Host *HostP, struct PKT __iomem *PktP) +{ + struct rio_free_list __iomem *tmp_pointer; + unsigned short old_end, new_end; + unsigned long flags; + + rio_spin_lock_irqsave(&HostP->HostLock, flags); + + /************************************************* + * Put a packet back onto the back of the free list + * + ************************************************/ + + rio_dprintk(RIO_DEBUG_PFE, "put_free_end(PktP=%p)\n", PktP); + + if ((old_end = readw(&HostP->ParmMapP->free_list_end)) != TPNULL) { + new_end = RIO_OFF(HostP->Caddr, PktP); + tmp_pointer = (struct rio_free_list __iomem *) RIO_PTR(HostP->Caddr, old_end); + writew(new_end, &tmp_pointer->next); + writew(old_end, &((struct rio_free_list __iomem *) PktP)->prev); + writew(TPNULL, &((struct rio_free_list __iomem *) PktP)->next); + writew(new_end, &HostP->ParmMapP->free_list_end); + } else { /* First packet on the free list this should never happen! */ + rio_dprintk(RIO_DEBUG_PFE, "put_free_end(): This should never happen\n"); + writew(RIO_OFF(HostP->Caddr, PktP), &HostP->ParmMapP->free_list_end); + tmp_pointer = (struct rio_free_list __iomem *) PktP; + writew(TPNULL, &tmp_pointer->prev); + writew(TPNULL, &tmp_pointer->next); + } + rio_dprintk(RIO_DEBUG_CMD, "Before unlock: %p\n", &HostP->HostLock); + rio_spin_unlock_irqrestore(&HostP->HostLock, flags); +} + +/* +** can_remove_receive(PktP,P) returns non-zero if PKT_IN_USE is set +** for the next packet on the queue. It will also set PktP to point to the +** relevant packet, [having cleared the PKT_IN_USE bit]. If PKT_IN_USE is clear, +** then can_remove_receive() returns 0. +*/ +int can_remove_receive(struct PKT __iomem **PktP, struct Port *PortP) +{ + if (readw(PortP->RxRemove) & PKT_IN_USE) { + *PktP = (struct PKT __iomem *) RIO_PTR(PortP->Caddr, readw(PortP->RxRemove) & ~PKT_IN_USE); + return 1; + } + return 0; +} + +/* +** To remove a packet from the receive queue you clear its PKT_IN_USE bit, +** and then bump the pointers. Once the pointers get to the end, they must +** be wrapped back to the start. +*/ +void remove_receive(struct Port *PortP) +{ + writew(readw(PortP->RxRemove) & ~PKT_IN_USE, PortP->RxRemove); + PortP->RxRemove = (PortP->RxRemove == PortP->RxEnd) ? PortP->RxStart : PortP->RxRemove + 1; + writew(RIO_OFF(PortP->Caddr, PortP->RxRemove), &PortP->PhbP->rx_remove); +} diff --git a/drivers/staging/generic_serial/rio/rioroute.c b/drivers/staging/generic_serial/rio/rioroute.c new file mode 100644 index 000000000000..f9b936ac3394 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rioroute.c @@ -0,0 +1,1039 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : rioroute.c +** SID : 1.3 +** Last Modified : 11/6/98 10:33:46 +** Retrieved : 11/6/98 10:33:50 +** +** ident @(#)rioroute.c 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" +#include "param.h" + +static int RIOCheckIsolated(struct rio_info *, struct Host *, unsigned int); +static int RIOIsolate(struct rio_info *, struct Host *, unsigned int); +static int RIOCheck(struct Host *, unsigned int); +static void RIOConCon(struct rio_info *, struct Host *, unsigned int, unsigned int, unsigned int, unsigned int, int); + + +/* +** Incoming on the ROUTE_RUP +** I wrote this while I was tired. Forgive me. +*/ +int RIORouteRup(struct rio_info *p, unsigned int Rup, struct Host *HostP, struct PKT __iomem * PacketP) +{ + struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *) PacketP->data; + struct PktCmd_M *PktReplyP; + struct CmdBlk *CmdBlkP; + struct Port *PortP; + struct Map *MapP; + struct Top *TopP; + int ThisLink, ThisLinkMin, ThisLinkMax; + int port; + int Mod, Mod1, Mod2; + unsigned short RtaType; + unsigned int RtaUniq; + unsigned int ThisUnit, ThisUnit2; /* 2 ids to accommodate 16 port RTA */ + unsigned int OldUnit, NewUnit, OldLink, NewLink; + char *MyType, *MyName; + int Lies; + unsigned long flags; + + /* + ** Is this unit telling us it's current link topology? + */ + if (readb(&PktCmdP->Command) == ROUTE_TOPOLOGY) { + MapP = HostP->Mapping; + + /* + ** The packet can be sent either by the host or by an RTA. + ** If it comes from the host, then we need to fill in the + ** Topology array in the host structure. If it came in + ** from an RTA then we need to fill in the Mapping structure's + ** Topology array for the unit. + */ + if (Rup >= (unsigned short) MAX_RUP) { + ThisUnit = HOST_ID; + TopP = HostP->Topology; + MyType = "Host"; + MyName = HostP->Name; + ThisLinkMin = ThisLinkMax = Rup - MAX_RUP; + } else { + ThisUnit = Rup + 1; + TopP = HostP->Mapping[Rup].Topology; + MyType = "RTA"; + MyName = HostP->Mapping[Rup].Name; + ThisLinkMin = 0; + ThisLinkMax = LINKS_PER_UNIT - 1; + } + + /* + ** Lies will not be tolerated. + ** If any pair of links claim to be connected to the same + ** place, then ignore this packet completely. + */ + Lies = 0; + for (ThisLink = ThisLinkMin + 1; ThisLink <= ThisLinkMax; ThisLink++) { + /* + ** it won't lie about network interconnect, total disconnects + ** and no-IDs. (or at least, it doesn't *matter* if it does) + */ + if (readb(&PktCmdP->RouteTopology[ThisLink].Unit) > (unsigned short) MAX_RUP) + continue; + + for (NewLink = ThisLinkMin; NewLink < ThisLink; NewLink++) { + if ((readb(&PktCmdP->RouteTopology[ThisLink].Unit) == readb(&PktCmdP->RouteTopology[NewLink].Unit)) && (readb(&PktCmdP->RouteTopology[ThisLink].Link) == readb(&PktCmdP->RouteTopology[NewLink].Link))) { + Lies++; + } + } + } + + if (Lies) { + rio_dprintk(RIO_DEBUG_ROUTE, "LIES! DAMN LIES! %d LIES!\n", Lies); + rio_dprintk(RIO_DEBUG_ROUTE, "%d:%c %d:%c %d:%c %d:%c\n", + readb(&PktCmdP->RouteTopology[0].Unit), + 'A' + readb(&PktCmdP->RouteTopology[0].Link), + readb(&PktCmdP->RouteTopology[1].Unit), + 'A' + readb(&PktCmdP->RouteTopology[1].Link), readb(&PktCmdP->RouteTopology[2].Unit), 'A' + readb(&PktCmdP->RouteTopology[2].Link), readb(&PktCmdP->RouteTopology[3].Unit), 'A' + readb(&PktCmdP->RouteTopology[3].Link)); + return 1; + } + + /* + ** now, process each link. + */ + for (ThisLink = ThisLinkMin; ThisLink <= ThisLinkMax; ThisLink++) { + /* + ** this is what it was connected to + */ + OldUnit = TopP[ThisLink].Unit; + OldLink = TopP[ThisLink].Link; + + /* + ** this is what it is now connected to + */ + NewUnit = readb(&PktCmdP->RouteTopology[ThisLink].Unit); + NewLink = readb(&PktCmdP->RouteTopology[ThisLink].Link); + + if (OldUnit != NewUnit || OldLink != NewLink) { + /* + ** something has changed! + */ + + if (NewUnit > MAX_RUP && NewUnit != ROUTE_DISCONNECT && NewUnit != ROUTE_NO_ID && NewUnit != ROUTE_INTERCONNECT) { + rio_dprintk(RIO_DEBUG_ROUTE, "I have a link from %s %s to unit %d:%d - I don't like it.\n", MyType, MyName, NewUnit, NewLink); + } else { + /* + ** put the new values in + */ + TopP[ThisLink].Unit = NewUnit; + TopP[ThisLink].Link = NewLink; + + RIOSetChange(p); + + if (OldUnit <= MAX_RUP) { + /* + ** If something has become bust, then re-enable them messages + */ + if (!p->RIONoMessage) + RIOConCon(p, HostP, ThisUnit, ThisLink, OldUnit, OldLink, DISCONNECT); + } + + if ((NewUnit <= MAX_RUP) && !p->RIONoMessage) + RIOConCon(p, HostP, ThisUnit, ThisLink, NewUnit, NewLink, CONNECT); + + if (NewUnit == ROUTE_NO_ID) + rio_dprintk(RIO_DEBUG_ROUTE, "%s %s (%c) is connected to an unconfigured unit.\n", MyType, MyName, 'A' + ThisLink); + + if (NewUnit == ROUTE_INTERCONNECT) { + if (!p->RIONoMessage) + printk(KERN_DEBUG "rio: %s '%s' (%c) is connected to another network.\n", MyType, MyName, 'A' + ThisLink); + } + + /* + ** perform an update for 'the other end', so that these messages + ** only appears once. Only disconnect the other end if it is pointing + ** at us! + */ + if (OldUnit == HOST_ID) { + if (HostP->Topology[OldLink].Unit == ThisUnit && HostP->Topology[OldLink].Link == ThisLink) { + rio_dprintk(RIO_DEBUG_ROUTE, "SETTING HOST (%c) TO DISCONNECTED!\n", OldLink + 'A'); + HostP->Topology[OldLink].Unit = ROUTE_DISCONNECT; + HostP->Topology[OldLink].Link = NO_LINK; + } else { + rio_dprintk(RIO_DEBUG_ROUTE, "HOST(%c) WAS NOT CONNECTED TO %s (%c)!\n", OldLink + 'A', HostP->Mapping[ThisUnit - 1].Name, ThisLink + 'A'); + } + } else if (OldUnit <= MAX_RUP) { + if (HostP->Mapping[OldUnit - 1].Topology[OldLink].Unit == ThisUnit && HostP->Mapping[OldUnit - 1].Topology[OldLink].Link == ThisLink) { + rio_dprintk(RIO_DEBUG_ROUTE, "SETTING RTA %s (%c) TO DISCONNECTED!\n", HostP->Mapping[OldUnit - 1].Name, OldLink + 'A'); + HostP->Mapping[OldUnit - 1].Topology[OldLink].Unit = ROUTE_DISCONNECT; + HostP->Mapping[OldUnit - 1].Topology[OldLink].Link = NO_LINK; + } else { + rio_dprintk(RIO_DEBUG_ROUTE, "RTA %s (%c) WAS NOT CONNECTED TO %s (%c)\n", HostP->Mapping[OldUnit - 1].Name, OldLink + 'A', HostP->Mapping[ThisUnit - 1].Name, ThisLink + 'A'); + } + } + if (NewUnit == HOST_ID) { + rio_dprintk(RIO_DEBUG_ROUTE, "MARKING HOST (%c) CONNECTED TO %s (%c)\n", NewLink + 'A', MyName, ThisLink + 'A'); + HostP->Topology[NewLink].Unit = ThisUnit; + HostP->Topology[NewLink].Link = ThisLink; + } else if (NewUnit <= MAX_RUP) { + rio_dprintk(RIO_DEBUG_ROUTE, "MARKING RTA %s (%c) CONNECTED TO %s (%c)\n", HostP->Mapping[NewUnit - 1].Name, NewLink + 'A', MyName, ThisLink + 'A'); + HostP->Mapping[NewUnit - 1].Topology[NewLink].Unit = ThisUnit; + HostP->Mapping[NewUnit - 1].Topology[NewLink].Link = ThisLink; + } + } + RIOSetChange(p); + RIOCheckIsolated(p, HostP, OldUnit); + } + } + return 1; + } + + /* + ** The only other command we recognise is a route_request command + */ + if (readb(&PktCmdP->Command) != ROUTE_REQUEST) { + rio_dprintk(RIO_DEBUG_ROUTE, "Unknown command %d received on rup %d host %p ROUTE_RUP\n", readb(&PktCmdP->Command), Rup, HostP); + return 1; + } + + RtaUniq = (readb(&PktCmdP->UniqNum[0])) + (readb(&PktCmdP->UniqNum[1]) << 8) + (readb(&PktCmdP->UniqNum[2]) << 16) + (readb(&PktCmdP->UniqNum[3]) << 24); + + /* + ** Determine if 8 or 16 port RTA + */ + RtaType = GetUnitType(RtaUniq); + + rio_dprintk(RIO_DEBUG_ROUTE, "Received a request for an ID for serial number %x\n", RtaUniq); + + Mod = readb(&PktCmdP->ModuleTypes); + Mod1 = LONYBLE(Mod); + if (RtaType == TYPE_RTA16) { + /* + ** Only one ident is set for a 16 port RTA. To make compatible + ** with 8 port, set 2nd ident in Mod2 to the same as Mod1. + */ + Mod2 = Mod1; + rio_dprintk(RIO_DEBUG_ROUTE, "Backplane type is %s (all ports)\n", p->RIOModuleTypes[Mod1].Name); + } else { + Mod2 = HINYBLE(Mod); + rio_dprintk(RIO_DEBUG_ROUTE, "Module types are %s (ports 0-3) and %s (ports 4-7)\n", p->RIOModuleTypes[Mod1].Name, p->RIOModuleTypes[Mod2].Name); + } + + /* + ** try to unhook a command block from the command free list. + */ + if (!(CmdBlkP = RIOGetCmdBlk())) { + rio_dprintk(RIO_DEBUG_ROUTE, "No command blocks to route RTA! come back later.\n"); + return 0; + } + + /* + ** Fill in the default info on the command block + */ + CmdBlkP->Packet.dest_unit = Rup; + CmdBlkP->Packet.dest_port = ROUTE_RUP; + CmdBlkP->Packet.src_unit = HOST_ID; + CmdBlkP->Packet.src_port = ROUTE_RUP; + CmdBlkP->Packet.len = PKT_CMD_BIT | 1; + CmdBlkP->PreFuncP = CmdBlkP->PostFuncP = NULL; + PktReplyP = (struct PktCmd_M *) CmdBlkP->Packet.data; + + if (!RIOBootOk(p, HostP, RtaUniq)) { + rio_dprintk(RIO_DEBUG_ROUTE, "RTA %x tried to get an ID, but does not belong - FOAD it!\n", RtaUniq); + PktReplyP->Command = ROUTE_FOAD; + memcpy(PktReplyP->CommandText, "RT_FOAD", 7); + RIOQueueCmdBlk(HostP, Rup, CmdBlkP); + return 1; + } + + /* + ** Check to see if the RTA is configured for this host + */ + for (ThisUnit = 0; ThisUnit < MAX_RUP; ThisUnit++) { + rio_dprintk(RIO_DEBUG_ROUTE, "Entry %d Flags=%s %s UniqueNum=0x%x\n", + ThisUnit, HostP->Mapping[ThisUnit].Flags & SLOT_IN_USE ? "Slot-In-Use" : "Not In Use", HostP->Mapping[ThisUnit].Flags & SLOT_TENTATIVE ? "Slot-Tentative" : "Not Tentative", HostP->Mapping[ThisUnit].RtaUniqueNum); + + /* + ** We have an entry for it. + */ + if ((HostP->Mapping[ThisUnit].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) && (HostP->Mapping[ThisUnit].RtaUniqueNum == RtaUniq)) { + if (RtaType == TYPE_RTA16) { + ThisUnit2 = HostP->Mapping[ThisUnit].ID2 - 1; + rio_dprintk(RIO_DEBUG_ROUTE, "Found unit 0x%x at slots %d+%d\n", RtaUniq, ThisUnit, ThisUnit2); + } else + rio_dprintk(RIO_DEBUG_ROUTE, "Found unit 0x%x at slot %d\n", RtaUniq, ThisUnit); + /* + ** If we have no knowledge of booting it, then the host has + ** been re-booted, and so we must kill the RTA, so that it + ** will be booted again (potentially with new bins) + ** and it will then re-ask for an ID, which we will service. + */ + if ((HostP->Mapping[ThisUnit].Flags & SLOT_IN_USE) && !(HostP->Mapping[ThisUnit].Flags & RTA_BOOTED)) { + if (!(HostP->Mapping[ThisUnit].Flags & MSG_DONE)) { + if (!p->RIONoMessage) + printk(KERN_DEBUG "rio: RTA '%s' is being updated.\n", HostP->Mapping[ThisUnit].Name); + HostP->Mapping[ThisUnit].Flags |= MSG_DONE; + } + PktReplyP->Command = ROUTE_FOAD; + memcpy(PktReplyP->CommandText, "RT_FOAD", 7); + RIOQueueCmdBlk(HostP, Rup, CmdBlkP); + return 1; + } + + /* + ** Send the ID (entry) to this RTA. The ID number is implicit as + ** the offset into the table. It is worth noting at this stage + ** that offset zero in the table contains the entries for the + ** RTA with ID 1!!!! + */ + PktReplyP->Command = ROUTE_ALLOCATE; + PktReplyP->IDNum = ThisUnit + 1; + if (RtaType == TYPE_RTA16) { + if (HostP->Mapping[ThisUnit].Flags & SLOT_IN_USE) + /* + ** Adjust the phb and tx pkt dest_units for 2nd block of 8 + ** only if the RTA has ports associated (SLOT_IN_USE) + */ + RIOFixPhbs(p, HostP, ThisUnit2); + PktReplyP->IDNum2 = ThisUnit2 + 1; + rio_dprintk(RIO_DEBUG_ROUTE, "RTA '%s' has been allocated IDs %d+%d\n", HostP->Mapping[ThisUnit].Name, PktReplyP->IDNum, PktReplyP->IDNum2); + } else { + PktReplyP->IDNum2 = ROUTE_NO_ID; + rio_dprintk(RIO_DEBUG_ROUTE, "RTA '%s' has been allocated ID %d\n", HostP->Mapping[ThisUnit].Name, PktReplyP->IDNum); + } + memcpy(PktReplyP->CommandText, "RT_ALLOCAT", 10); + + RIOQueueCmdBlk(HostP, Rup, CmdBlkP); + + /* + ** If this is a freshly booted RTA, then we need to re-open + ** the ports, if any where open, so that data may once more + ** flow around the system! + */ + if ((HostP->Mapping[ThisUnit].Flags & RTA_NEWBOOT) && (HostP->Mapping[ThisUnit].SysPort != NO_PORT)) { + /* + ** look at the ports associated with this beast and + ** see if any where open. If they was, then re-open + ** them, using the info from the tty flags. + */ + for (port = 0; port < PORTS_PER_RTA; port++) { + PortP = p->RIOPortp[port + HostP->Mapping[ThisUnit].SysPort]; + if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) { + rio_dprintk(RIO_DEBUG_ROUTE, "Re-opened this port\n"); + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->MagicFlags |= MAGIC_REBOOT; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + } + } + if (RtaType == TYPE_RTA16) { + for (port = 0; port < PORTS_PER_RTA; port++) { + PortP = p->RIOPortp[port + HostP->Mapping[ThisUnit2].SysPort]; + if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) { + rio_dprintk(RIO_DEBUG_ROUTE, "Re-opened this port\n"); + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->MagicFlags |= MAGIC_REBOOT; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + } + } + } + } + + /* + ** keep a copy of the module types! + */ + HostP->UnixRups[ThisUnit].ModTypes = Mod; + if (RtaType == TYPE_RTA16) + HostP->UnixRups[ThisUnit2].ModTypes = Mod; + + /* + ** If either of the modules on this unit is read-only or write-only + ** or none-xprint, then we need to transfer that info over to the + ** relevant ports. + */ + if (HostP->Mapping[ThisUnit].SysPort != NO_PORT) { + for (port = 0; port < PORTS_PER_MODULE; port++) { + p->RIOPortp[port + HostP->Mapping[ThisUnit].SysPort]->Config &= ~RIO_NOMASK; + p->RIOPortp[port + HostP->Mapping[ThisUnit].SysPort]->Config |= p->RIOModuleTypes[Mod1].Flags[port]; + p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit].SysPort]->Config &= ~RIO_NOMASK; + p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit].SysPort]->Config |= p->RIOModuleTypes[Mod2].Flags[port]; + } + if (RtaType == TYPE_RTA16) { + for (port = 0; port < PORTS_PER_MODULE; port++) { + p->RIOPortp[port + HostP->Mapping[ThisUnit2].SysPort]->Config &= ~RIO_NOMASK; + p->RIOPortp[port + HostP->Mapping[ThisUnit2].SysPort]->Config |= p->RIOModuleTypes[Mod1].Flags[port]; + p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit2].SysPort]->Config &= ~RIO_NOMASK; + p->RIOPortp[port + PORTS_PER_MODULE + HostP->Mapping[ThisUnit2].SysPort]->Config |= p->RIOModuleTypes[Mod2].Flags[port]; + } + } + } + + /* + ** Job done, get on with the interrupts! + */ + return 1; + } + } + /* + ** There is no table entry for this RTA at all. + ** + ** Lets check to see if we actually booted this unit - if not, + ** then we reset it and it will go round the loop of being booted + ** we can then worry about trying to fit it into the table. + */ + for (ThisUnit = 0; ThisUnit < HostP->NumExtraBooted; ThisUnit++) + if (HostP->ExtraUnits[ThisUnit] == RtaUniq) + break; + if (ThisUnit == HostP->NumExtraBooted && ThisUnit != MAX_EXTRA_UNITS) { + /* + ** if the unit wasn't in the table, and the table wasn't full, then + ** we reset the unit, because we didn't boot it. + ** However, if the table is full, it could be that we did boot + ** this unit, and so we won't reboot it, because it isn't really + ** all that disasterous to keep the old bins in most cases. This + ** is a rather tacky feature, but we are on the edge of reallity + ** here, because the implication is that someone has connected + ** 16+MAX_EXTRA_UNITS onto one host. + */ + static int UnknownMesgDone = 0; + + if (!UnknownMesgDone) { + if (!p->RIONoMessage) + printk(KERN_DEBUG "rio: One or more unknown RTAs are being updated.\n"); + UnknownMesgDone = 1; + } + + PktReplyP->Command = ROUTE_FOAD; + memcpy(PktReplyP->CommandText, "RT_FOAD", 7); + } else { + /* + ** we did boot it (as an extra), and there may now be a table + ** slot free (because of a delete), so we will try to make + ** a tentative entry for it, so that the configurator can see it + ** and fill in the details for us. + */ + if (RtaType == TYPE_RTA16) { + if (RIOFindFreeID(p, HostP, &ThisUnit, &ThisUnit2) == 0) { + RIODefaultName(p, HostP, ThisUnit); + rio_fill_host_slot(ThisUnit, ThisUnit2, RtaUniq, HostP); + } + } else { + if (RIOFindFreeID(p, HostP, &ThisUnit, NULL) == 0) { + RIODefaultName(p, HostP, ThisUnit); + rio_fill_host_slot(ThisUnit, 0, RtaUniq, HostP); + } + } + PktReplyP->Command = ROUTE_USED; + memcpy(PktReplyP->CommandText, "RT_USED", 7); + } + RIOQueueCmdBlk(HostP, Rup, CmdBlkP); + return 1; +} + + +void RIOFixPhbs(struct rio_info *p, struct Host *HostP, unsigned int unit) +{ + unsigned short link, port; + struct Port *PortP; + unsigned long flags; + int PortN = HostP->Mapping[unit].SysPort; + + rio_dprintk(RIO_DEBUG_ROUTE, "RIOFixPhbs unit %d sysport %d\n", unit, PortN); + + if (PortN != -1) { + unsigned short dest_unit = HostP->Mapping[unit].ID2; + + /* + ** Get the link number used for the 1st 8 phbs on this unit. + */ + PortP = p->RIOPortp[HostP->Mapping[dest_unit - 1].SysPort]; + + link = readw(&PortP->PhbP->link); + + for (port = 0; port < PORTS_PER_RTA; port++, PortN++) { + unsigned short dest_port = port + 8; + u16 __iomem *TxPktP; + struct PKT __iomem *Pkt; + + PortP = p->RIOPortp[PortN]; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + /* + ** If RTA is not powered on, the tx packets will be + ** unset, so go no further. + */ + if (!PortP->TxStart) { + rio_dprintk(RIO_DEBUG_ROUTE, "Tx pkts not set up yet\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + break; + } + + /* + ** For the second slot of a 16 port RTA, the driver needs to + ** sort out the phb to port mappings. The dest_unit for this + ** group of 8 phbs is set to the dest_unit of the accompanying + ** 8 port block. The dest_port of the second unit is set to + ** be in the range 8-15 (i.e. 8 is added). Thus, for a 16 port + ** RTA with IDs 5 and 6, traffic bound for port 6 of unit 6 + ** (being the second map ID) will be sent to dest_unit 5, port + ** 14. When this RTA is deleted, dest_unit for ID 6 will be + ** restored, and the dest_port will be reduced by 8. + ** Transmit packets also have a destination field which needs + ** adjusting in the same manner. + ** Note that the unit/port bytes in 'dest' are swapped. + ** We also need to adjust the phb and rup link numbers for the + ** second block of 8 ttys. + */ + for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) { + /* + ** *TxPktP is the pointer to the transmit packet on the host + ** card. This needs to be translated into a 32 bit pointer + ** so it can be accessed from the driver. + */ + Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(TxPktP)); + + /* + ** If the packet is used, reset it. + */ + Pkt = (struct PKT __iomem *) ((unsigned long) Pkt & ~PKT_IN_USE); + writeb(dest_unit, &Pkt->dest_unit); + writeb(dest_port, &Pkt->dest_port); + } + rio_dprintk(RIO_DEBUG_ROUTE, "phb dest: Old %x:%x New %x:%x\n", readw(&PortP->PhbP->destination) & 0xff, (readw(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port); + writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination); + writew(link, &PortP->PhbP->link); + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + } + /* + ** Now make sure the range of ports to be serviced includes + ** the 2nd 8 on this 16 port RTA. + */ + if (link > 3) + return; + if (((unit * 8) + 7) > readw(&HostP->LinkStrP[link].last_port)) { + rio_dprintk(RIO_DEBUG_ROUTE, "last port on host link %d: %d\n", link, (unit * 8) + 7); + writew((unit * 8) + 7, &HostP->LinkStrP[link].last_port); + } + } +} + +/* +** Check to see if the new disconnection has isolated this unit. +** If it has, then invalidate all its link information, and tell +** the world about it. This is done to ensure that the configurator +** only gets up-to-date information about what is going on. +*/ +static int RIOCheckIsolated(struct rio_info *p, struct Host *HostP, unsigned int UnitId) +{ + unsigned long flags; + rio_spin_lock_irqsave(&HostP->HostLock, flags); + + if (RIOCheck(HostP, UnitId)) { + rio_dprintk(RIO_DEBUG_ROUTE, "Unit %d is NOT isolated\n", UnitId); + rio_spin_unlock_irqrestore(&HostP->HostLock, flags); + return (0); + } + + RIOIsolate(p, HostP, UnitId); + RIOSetChange(p); + rio_spin_unlock_irqrestore(&HostP->HostLock, flags); + return 1; +} + +/* +** Invalidate all the link interconnectivity of this unit, and of +** all the units attached to it. This will mean that the entire +** subnet will re-introduce itself. +*/ +static int RIOIsolate(struct rio_info *p, struct Host *HostP, unsigned int UnitId) +{ + unsigned int link, unit; + + UnitId--; /* this trick relies on the Unit Id being UNSIGNED! */ + + if (UnitId >= MAX_RUP) /* dontcha just lurv unsigned maths! */ + return (0); + + if (HostP->Mapping[UnitId].Flags & BEEN_HERE) + return (0); + + HostP->Mapping[UnitId].Flags |= BEEN_HERE; + + if (p->RIOPrintDisabled == DO_PRINT) + rio_dprintk(RIO_DEBUG_ROUTE, "RIOMesgIsolated %s", HostP->Mapping[UnitId].Name); + + for (link = 0; link < LINKS_PER_UNIT; link++) { + unit = HostP->Mapping[UnitId].Topology[link].Unit; + HostP->Mapping[UnitId].Topology[link].Unit = ROUTE_DISCONNECT; + HostP->Mapping[UnitId].Topology[link].Link = NO_LINK; + RIOIsolate(p, HostP, unit); + } + HostP->Mapping[UnitId].Flags &= ~BEEN_HERE; + return 1; +} + +static int RIOCheck(struct Host *HostP, unsigned int UnitId) +{ + unsigned char link; + +/* rio_dprint(RIO_DEBUG_ROUTE, ("Check to see if unit %d has a route to the host\n",UnitId)); */ + rio_dprintk(RIO_DEBUG_ROUTE, "RIOCheck : UnitID = %d\n", UnitId); + + if (UnitId == HOST_ID) { + /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d is NOT isolated - it IS the host!\n", UnitId)); */ + return 1; + } + + UnitId--; + + if (UnitId >= MAX_RUP) { + /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d - ignored.\n", UnitId)); */ + return 0; + } + + for (link = 0; link < LINKS_PER_UNIT; link++) { + if (HostP->Mapping[UnitId].Topology[link].Unit == HOST_ID) { + /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d is connected directly to host via link (%c).\n", + UnitId, 'A'+link)); */ + return 1; + } + } + + if (HostP->Mapping[UnitId].Flags & BEEN_HERE) { + /* rio_dprint(RIO_DEBUG_ROUTE, ("Been to Unit %d before - ignoring\n", UnitId)); */ + return 0; + } + + HostP->Mapping[UnitId].Flags |= BEEN_HERE; + + for (link = 0; link < LINKS_PER_UNIT; link++) { + /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d check link (%c)\n", UnitId,'A'+link)); */ + if (RIOCheck(HostP, HostP->Mapping[UnitId].Topology[link].Unit)) { + /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d is connected to something that knows the host via link (%c)\n", UnitId,link+'A')); */ + HostP->Mapping[UnitId].Flags &= ~BEEN_HERE; + return 1; + } + } + + HostP->Mapping[UnitId].Flags &= ~BEEN_HERE; + + /* rio_dprint(RIO_DEBUG_ROUTE, ("Unit %d DOESNT KNOW THE HOST!\n", UnitId)); */ + + return 0; +} + +/* +** Returns the type of unit (host, 16/8 port RTA) +*/ + +unsigned int GetUnitType(unsigned int Uniq) +{ + switch ((Uniq >> 28) & 0xf) { + case RIO_AT: + case RIO_MCA: + case RIO_EISA: + case RIO_PCI: + rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: Host\n"); + return (TYPE_HOST); + case RIO_RTA_16: + rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: 16 port RTA\n"); + return (TYPE_RTA16); + case RIO_RTA: + rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: 8 port RTA\n"); + return (TYPE_RTA8); + default: + rio_dprintk(RIO_DEBUG_ROUTE, "Unit type: Unrecognised\n"); + return (99); + } +} + +int RIOSetChange(struct rio_info *p) +{ + if (p->RIOQuickCheck != NOT_CHANGED) + return (0); + p->RIOQuickCheck = CHANGED; + if (p->RIOSignalProcess) { + rio_dprintk(RIO_DEBUG_ROUTE, "Send SIG-HUP"); + /* + psignal( RIOSignalProcess, SIGHUP ); + */ + } + return (0); +} + +static void RIOConCon(struct rio_info *p, + struct Host *HostP, + unsigned int FromId, + unsigned int FromLink, + unsigned int ToId, + unsigned int ToLink, + int Change) +{ + char *FromName; + char *FromType; + char *ToName; + char *ToType; + unsigned int tp; + +/* +** 15.10.1998 ARG - ESIL 0759 +** (Part) fix for port being trashed when opened whilst RTA "disconnected" +** +** What's this doing in here anyway ? +** It was causing the port to be 'unmapped' if opened whilst RTA "disconnected" +** +** 09.12.1998 ARG - ESIL 0776 - part fix +** Okay, We've found out what this was all about now ! +** Someone had botched this to use RIOHalted to indicated the number of RTAs +** 'disconnected'. The value in RIOHalted was then being used in the +** 'RIO_QUICK_CHECK' ioctl. A none zero value indicating that a least one RTA +** is 'disconnected'. The change was put in to satisfy a customer's needs. +** Having taken this bit of code out 'RIO_QUICK_CHECK' now no longer works for +** the customer. +** + if (Change == CONNECT) { + if (p->RIOHalted) p->RIOHalted --; + } + else { + p->RIOHalted ++; + } +** +** So - we need to implement it slightly differently - a new member of the +** rio_info struct - RIORtaDisCons (RIO RTA connections) keeps track of RTA +** connections and disconnections. +*/ + if (Change == CONNECT) { + if (p->RIORtaDisCons) + p->RIORtaDisCons--; + } else { + p->RIORtaDisCons++; + } + + if (p->RIOPrintDisabled == DONT_PRINT) + return; + + if (FromId > ToId) { + tp = FromId; + FromId = ToId; + ToId = tp; + tp = FromLink; + FromLink = ToLink; + ToLink = tp; + } + + FromName = FromId ? HostP->Mapping[FromId - 1].Name : HostP->Name; + FromType = FromId ? "RTA" : "HOST"; + ToName = ToId ? HostP->Mapping[ToId - 1].Name : HostP->Name; + ToType = ToId ? "RTA" : "HOST"; + + rio_dprintk(RIO_DEBUG_ROUTE, "Link between %s '%s' (%c) and %s '%s' (%c) %s.\n", FromType, FromName, 'A' + FromLink, ToType, ToName, 'A' + ToLink, (Change == CONNECT) ? "established" : "disconnected"); + printk(KERN_DEBUG "rio: Link between %s '%s' (%c) and %s '%s' (%c) %s.\n", FromType, FromName, 'A' + FromLink, ToType, ToName, 'A' + ToLink, (Change == CONNECT) ? "established" : "disconnected"); +} + +/* +** RIORemoveFromSavedTable : +** +** Delete and RTA entry from the saved table given to us +** by the configuration program. +*/ +static int RIORemoveFromSavedTable(struct rio_info *p, struct Map *pMap) +{ + int entry; + + /* + ** We loop for all entries even after finding an entry and + ** zeroing it because we may have two entries to delete if + ** it's a 16 port RTA. + */ + for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) { + if (p->RIOSavedTable[entry].RtaUniqueNum == pMap->RtaUniqueNum) { + memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map)); + } + } + return 0; +} + + +/* +** RIOCheckDisconnected : +** +** Scan the unit links to and return zero if the unit is completely +** disconnected. +*/ +static int RIOFreeDisconnected(struct rio_info *p, struct Host *HostP, int unit) +{ + int link; + + + rio_dprintk(RIO_DEBUG_ROUTE, "RIOFreeDisconnect unit %d\n", unit); + /* + ** If the slot is tentative and does not belong to the + ** second half of a 16 port RTA then scan to see if + ** is disconnected. + */ + for (link = 0; link < LINKS_PER_UNIT; link++) { + if (HostP->Mapping[unit].Topology[link].Unit != ROUTE_DISCONNECT) + break; + } + + /* + ** If not all links are disconnected then we can forget about it. + */ + if (link < LINKS_PER_UNIT) + return 1; + +#ifdef NEED_TO_FIX_THIS + /* Ok so all the links are disconnected. But we may have only just + ** made this slot tentative and not yet received a topology update. + ** Lets check how long ago we made it tentative. + */ + rio_dprintk(RIO_DEBUG_ROUTE, "Just about to check LBOLT on entry %d\n", unit); + if (drv_getparm(LBOLT, (ulong_t *) & current_time)) + rio_dprintk(RIO_DEBUG_ROUTE, "drv_getparm(LBOLT,....) Failed.\n"); + + elapse_time = current_time - TentTime[unit]; + rio_dprintk(RIO_DEBUG_ROUTE, "elapse %d = current %d - tent %d (%d usec)\n", elapse_time, current_time, TentTime[unit], drv_hztousec(elapse_time)); + if (drv_hztousec(elapse_time) < WAIT_TO_FINISH) { + rio_dprintk(RIO_DEBUG_ROUTE, "Skipping slot %d, not timed out yet %d\n", unit, drv_hztousec(elapse_time)); + return 1; + } +#endif + + /* + ** We have found an usable slot. + ** If it is half of a 16 port RTA then delete the other half. + */ + if (HostP->Mapping[unit].ID2 != 0) { + int nOther = (HostP->Mapping[unit].ID2) - 1; + + rio_dprintk(RIO_DEBUG_ROUTE, "RioFreedis second slot %d.\n", nOther); + memset(&HostP->Mapping[nOther], 0, sizeof(struct Map)); + } + RIORemoveFromSavedTable(p, &HostP->Mapping[unit]); + + return 0; +} + + +/* +** RIOFindFreeID : +** +** This function scans the given host table for either one +** or two free unit ID's. +*/ + +int RIOFindFreeID(struct rio_info *p, struct Host *HostP, unsigned int * pID1, unsigned int * pID2) +{ + int unit, tempID; + + /* + ** Initialise the ID's to MAX_RUP. + ** We do this to make the loop for setting the ID's as simple as + ** possible. + */ + *pID1 = MAX_RUP; + if (pID2 != NULL) + *pID2 = MAX_RUP; + + /* + ** Scan all entries of the host mapping table for free slots. + ** We scan for free slots first and then if that is not successful + ** we start all over again looking for tentative slots we can re-use. + */ + for (unit = 0; unit < MAX_RUP; unit++) { + rio_dprintk(RIO_DEBUG_ROUTE, "Scanning unit %d\n", unit); + /* + ** If the flags are zero then the slot is empty. + */ + if (HostP->Mapping[unit].Flags == 0) { + rio_dprintk(RIO_DEBUG_ROUTE, " This slot is empty.\n"); + /* + ** If we haven't allocated the first ID then do it now. + */ + if (*pID1 == MAX_RUP) { + rio_dprintk(RIO_DEBUG_ROUTE, "Make tentative entry for first unit %d\n", unit); + *pID1 = unit; + + /* + ** If the second ID is not needed then we can return + ** now. + */ + if (pID2 == NULL) + return 0; + } else { + /* + ** Allocate the second slot and return. + */ + rio_dprintk(RIO_DEBUG_ROUTE, "Make tentative entry for second unit %d\n", unit); + *pID2 = unit; + return 0; + } + } + } + + /* + ** If we manage to come out of the free slot loop then we + ** need to start all over again looking for tentative slots + ** that we can re-use. + */ + rio_dprintk(RIO_DEBUG_ROUTE, "Starting to scan for tentative slots\n"); + for (unit = 0; unit < MAX_RUP; unit++) { + if (((HostP->Mapping[unit].Flags & SLOT_TENTATIVE) || (HostP->Mapping[unit].Flags == 0)) && !(HostP->Mapping[unit].Flags & RTA16_SECOND_SLOT)) { + rio_dprintk(RIO_DEBUG_ROUTE, " Slot %d looks promising.\n", unit); + + if (unit == *pID1) { + rio_dprintk(RIO_DEBUG_ROUTE, " No it isn't, its the 1st half\n"); + continue; + } + + /* + ** Slot is Tentative or Empty, but not a tentative second + ** slot of a 16 porter. + ** Attempt to free up this slot (and its parnter if + ** it is a 16 port slot. The second slot will become + ** empty after a call to RIOFreeDisconnected so thats why + ** we look for empty slots above as well). + */ + if (HostP->Mapping[unit].Flags != 0) + if (RIOFreeDisconnected(p, HostP, unit) != 0) + continue; + /* + ** If we haven't allocated the first ID then do it now. + */ + if (*pID1 == MAX_RUP) { + rio_dprintk(RIO_DEBUG_ROUTE, "Grab tentative entry for first unit %d\n", unit); + *pID1 = unit; + + /* + ** Clear out this slot now that we intend to use it. + */ + memset(&HostP->Mapping[unit], 0, sizeof(struct Map)); + + /* + ** If the second ID is not needed then we can return + ** now. + */ + if (pID2 == NULL) + return 0; + } else { + /* + ** Allocate the second slot and return. + */ + rio_dprintk(RIO_DEBUG_ROUTE, "Grab tentative/empty entry for second unit %d\n", unit); + *pID2 = unit; + + /* + ** Clear out this slot now that we intend to use it. + */ + memset(&HostP->Mapping[unit], 0, sizeof(struct Map)); + + /* At this point under the right(wrong?) conditions + ** we may have a first unit ID being higher than the + ** second unit ID. This is a bad idea if we are about + ** to fill the slots with a 16 port RTA. + ** Better check and swap them over. + */ + + if (*pID1 > *pID2) { + rio_dprintk(RIO_DEBUG_ROUTE, "Swapping IDS %d %d\n", *pID1, *pID2); + tempID = *pID1; + *pID1 = *pID2; + *pID2 = tempID; + } + return 0; + } + } + } + + /* + ** If we manage to get to the end of the second loop then we + ** can give up and return a failure. + */ + return 1; +} + + +/* +** The link switch scenario. +** +** Rta Wun (A) is connected to Tuw (A). +** The tables are all up to date, and the system is OK. +** +** If Wun (A) is now moved to Wun (B) before Wun (A) can +** become disconnected, then the follow happens: +** +** Tuw (A) spots the change of unit:link at the other end +** of its link and Tuw sends a topology packet reflecting +** the change: Tuw (A) now disconnected from Wun (A), and +** this is closely followed by a packet indicating that +** Tuw (A) is now connected to Wun (B). +** +** Wun (B) will spot that it has now become connected, and +** Wun will send a topology packet, which indicates that +** both Wun (A) and Wun (B) is connected to Tuw (A). +** +** Eventually Wun (A) realises that it is now disconnected +** and Wun will send out a topology packet indicating that +** Wun (A) is now disconnected. +*/ diff --git a/drivers/staging/generic_serial/rio/riospace.h b/drivers/staging/generic_serial/rio/riospace.h new file mode 100644 index 000000000000..ffb31d4332b9 --- /dev/null +++ b/drivers/staging/generic_serial/rio/riospace.h @@ -0,0 +1,154 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : riospace.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:13 +** Retrieved : 11/6/98 11:34:22 +** +** ident @(#)riospace.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_riospace_h__ +#define __rio_riospace_h__ + +#define RIO_LOCATOR_LEN 16 +#define MAX_RIO_BOARDS 4 + +/* +** DONT change this file. At all. Unless you can rebuild the entire +** device driver, which you probably can't, then the rest of the +** driver won't see any changes you make here. So don't make any. +** In particular, it won't be able to see changes to RIO_SLOTS +*/ + +struct Conf { + char Locator[24]; + unsigned int StartupTime; + unsigned int SlowCook; + unsigned int IntrPollTime; + unsigned int BreakInterval; + unsigned int Timer; + unsigned int RtaLoadBase; + unsigned int HostLoadBase; + unsigned int XpHz; + unsigned int XpCps; + char *XpOn; + char *XpOff; + unsigned int MaxXpCps; + unsigned int MinXpCps; + unsigned int SpinCmds; + unsigned int FirstAddr; + unsigned int LastAddr; + unsigned int BufferSize; + unsigned int LowWater; + unsigned int LineLength; + unsigned int CmdTime; +}; + +/* +** Board types - these MUST correspond to product codes! +*/ +#define RIO_EMPTY 0x0 +#define RIO_EISA 0x3 +#define RIO_RTA_16 0x9 +#define RIO_AT 0xA +#define RIO_MCA 0xB +#define RIO_PCI 0xD +#define RIO_RTA 0xE + +/* +** Board data structure. This is used for configuration info +*/ +struct Brd { + unsigned char Type; /* RIO_EISA, RIO_MCA, RIO_AT, RIO_EMPTY... */ + unsigned char Ivec; /* POLLED or ivec number */ + unsigned char Mode; /* Control stuff, see below */ +}; + +struct Board { + char Locator[RIO_LOCATOR_LEN]; + int NumSlots; + struct Brd Boards[MAX_RIO_BOARDS]; +}; + +#define BOOT_FROM_LINK 0x00 +#define BOOT_FROM_RAM 0x01 +#define EXTERNAL_BUS_OFF 0x00 +#define EXTERNAL_BUS_ON 0x02 +#define INTERRUPT_DISABLE 0x00 +#define INTERRUPT_ENABLE 0x04 +#define BYTE_OPERATION 0x00 +#define WORD_OPERATION 0x08 +#define POLLED INTERRUPT_DISABLE +#define IRQ_15 (0x00 | INTERRUPT_ENABLE) +#define IRQ_12 (0x10 | INTERRUPT_ENABLE) +#define IRQ_11 (0x20 | INTERRUPT_ENABLE) +#define IRQ_9 (0x30 | INTERRUPT_ENABLE) +#define SLOW_LINKS 0x00 +#define FAST_LINKS 0x40 +#define SLOW_AT_BUS 0x00 +#define FAST_AT_BUS 0x80 +#define SLOW_PCI_TP 0x00 +#define FAST_PCI_TP 0x80 +/* +** Debug levels +*/ +#define DBG_NONE 0x00000000 + +#define DBG_INIT 0x00000001 +#define DBG_OPEN 0x00000002 +#define DBG_CLOSE 0x00000004 +#define DBG_IOCTL 0x00000008 + +#define DBG_READ 0x00000010 +#define DBG_WRITE 0x00000020 +#define DBG_INTR 0x00000040 +#define DBG_PROC 0x00000080 + +#define DBG_PARAM 0x00000100 +#define DBG_CMD 0x00000200 +#define DBG_XPRINT 0x00000400 +#define DBG_POLL 0x00000800 + +#define DBG_DAEMON 0x00001000 +#define DBG_FAIL 0x00002000 +#define DBG_MODEM 0x00004000 +#define DBG_LIST 0x00008000 + +#define DBG_ROUTE 0x00010000 +#define DBG_UTIL 0x00020000 +#define DBG_BOOT 0x00040000 +#define DBG_BUFFER 0x00080000 + +#define DBG_MON 0x00100000 +#define DBG_SPECIAL 0x00200000 +#define DBG_VPIX 0x00400000 +#define DBG_FLUSH 0x00800000 + +#define DBG_QENABLE 0x01000000 + +#define DBG_ALWAYS 0x80000000 + +#endif /* __rio_riospace_h__ */ diff --git a/drivers/staging/generic_serial/rio/riotable.c b/drivers/staging/generic_serial/rio/riotable.c new file mode 100644 index 000000000000..3d15802dc0f3 --- /dev/null +++ b/drivers/staging/generic_serial/rio/riotable.c @@ -0,0 +1,941 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : riotable.c +** SID : 1.2 +** Last Modified : 11/6/98 10:33:47 +** Retrieved : 11/6/98 10:33:50 +** +** ident @(#)riotable.c 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include + +#include + + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" +#include "param.h" +#include "protsts.h" + +/* +** A configuration table has been loaded. It is now up to us +** to sort it out and use the information contained therein. +*/ +int RIONewTable(struct rio_info *p) +{ + int Host, Host1, Host2, NameIsUnique, Entry, SubEnt; + struct Map *MapP; + struct Map *HostMapP; + struct Host *HostP; + + char *cptr; + + /* + ** We have been sent a new table to install. We need to break + ** it down into little bits and spread it around a bit to see + ** what we have got. + */ + /* + ** Things to check: + ** (things marked 'xx' aren't checked any more!) + ** (1) That there are no booted Hosts/RTAs out there. + ** (2) That the names are properly formed + ** (3) That blank entries really are. + ** xx (4) That hosts mentioned in the table actually exist. xx + ** (5) That the IDs are unique (per host). + ** (6) That host IDs are zero + ** (7) That port numbers are valid + ** (8) That port numbers aren't duplicated + ** (9) That names aren't duplicated + ** xx (10) That hosts that actually exist are mentioned in the table. xx + */ + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n"); + if (p->RIOSystemUp) { /* (1) */ + p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED; + return -EBUSY; + } + + p->RIOError.Error = NOTHING_WRONG_AT_ALL; + p->RIOError.Entry = -1; + p->RIOError.Other = -1; + + for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) { + MapP = &p->RIOConnectTable[Entry]; + if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) { + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n"); + cptr = MapP->Name; /* (2) */ + cptr[MAX_NAME_LEN - 1] = '\0'; + if (cptr[0] == '\0') { + memcpy(MapP->Name, MapP->RtaUniqueNum ? "RTA NN" : "HOST NN", 8); + MapP->Name[5] = '0' + Entry / 10; + MapP->Name[6] = '0' + Entry % 10; + } + while (*cptr) { + if (*cptr < ' ' || *cptr > '~') { + p->RIOError.Error = BAD_CHARACTER_IN_NAME; + p->RIOError.Entry = Entry; + return -ENXIO; + } + cptr++; + } + } + + /* + ** If the entry saved was a tentative entry then just forget + ** about it. + */ + if (MapP->Flags & SLOT_TENTATIVE) { + MapP->HostUniqueNum = 0; + MapP->RtaUniqueNum = 0; + continue; + } + + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n"); + if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) { /* (3) */ + if (MapP->ID || MapP->SysPort || MapP->Flags) { + rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name); + p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL; + p->RIOError.Entry = Entry; + return -ENXIO; + } + rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n"); + continue; + } + + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n"); + for (Host = 0; Host < p->RIONumHosts; Host++) { /* (4) */ + if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) { + HostP = &p->RIOHosts[Host]; + /* + ** having done the lookup, we don't really want to do + ** it again, so hang the host number in a safe place + */ + MapP->Topology[0].Unit = Host; + break; + } + } + + if (Host >= p->RIONumHosts) { + rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum); + MapP->HostUniqueNum = 0; + /* MapP->RtaUniqueNum = 0; */ + /* MapP->ID = 0; */ + /* MapP->Flags = 0; */ + /* MapP->SysPort = 0; */ + /* MapP->Name[0] = 0; */ + continue; + } + + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n"); + if (MapP->RtaUniqueNum) { /* (5) */ + if (!MapP->ID) { + rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name); + p->RIOError.Error = ZERO_RTA_ID; + p->RIOError.Entry = Entry; + return -ENXIO; + } + if (MapP->ID > MAX_RUP) { + rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID); + p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE; + p->RIOError.Entry = Entry; + return -ENXIO; + } + for (SubEnt = 0; SubEnt < Entry; SubEnt++) { + if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) { + rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name); + p->RIOError.Error = DUPLICATED_RTA_ID; + p->RIOError.Entry = Entry; + p->RIOError.Other = SubEnt; + return -ENXIO; + } + /* + ** If the RtaUniqueNum is the same, it may be looking at both + ** entries for a 16 port RTA, so check the ids + */ + if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum) + && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) { + rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name); + rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name); + p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER; + p->RIOError.Entry = Entry; + p->RIOError.Other = SubEnt; + return -ENXIO; + } + } + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n"); + /* (7a) */ + if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) { + rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d-RTA %s is not a multiple of %d!\n", (int) MapP->SysPort, MapP->Name, PORTS_PER_RTA); + p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; + p->RIOError.Entry = Entry; + return -ENXIO; + } + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n"); + /* (7b) */ + if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) { + rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name); + p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; + p->RIOError.Entry = Entry; + return -ENXIO; + } + for (SubEnt = 0; SubEnt < Entry; SubEnt++) { + if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT) + continue; + if (p->RIOConnectTable[SubEnt].RtaUniqueNum) { + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n"); + /* (8) */ + if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) { + rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort); + p->RIOError.Error = TTY_NUMBER_IN_USE; + p->RIOError.Entry = Entry; + p->RIOError.Other = SubEnt; + return -ENXIO; + } + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n"); + if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) { /* (9) */ + rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name); + p->RIOError.Error = NAME_USED_TWICE; + p->RIOError.Entry = Entry; + p->RIOError.Other = SubEnt; + return -ENXIO; + } + } + } + } else { /* (6) */ + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n"); + if (MapP->ID) { + rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name); + p->RIOError.Error = HOST_ID_NOT_ZERO; + p->RIOError.Entry = Entry; + return -ENXIO; + } + if (MapP->SysPort != NO_PORT) { + rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name); + p->RIOError.Error = HOST_SYSPORT_BAD; + p->RIOError.Entry = Entry; + return -ENXIO; + } + } + } + + /* + ** wow! if we get here then it's a goody! + */ + + /* + ** Zero the (old) entries for each host... + */ + for (Host = 0; Host < RIO_HOSTS; Host++) { + for (Entry = 0; Entry < MAX_RUP; Entry++) { + memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map)); + } + memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name)); + } + + /* + ** Copy in the new table entries + */ + for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) { + rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry); + MapP = &p->RIOConnectTable[Entry]; + + /* + ** Now, if it is an empty slot ignore it! + */ + if (MapP->HostUniqueNum == 0) + continue; + + /* + ** we saved the host number earlier, so grab it back + */ + HostP = &p->RIOHosts[MapP->Topology[0].Unit]; + + /* + ** If it is a host, then we only need to fill in the name field. + */ + if (MapP->ID == 0) { + rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name); + memcpy(HostP->Name, MapP->Name, MAX_NAME_LEN); + continue; + } + + /* + ** Its an RTA entry, so fill in the host mapping entries for it + ** and the port mapping entries. Notice that entry zero is for + ** ID one. + */ + HostMapP = &HostP->Mapping[MapP->ID - 1]; + + if (MapP->Flags & SLOT_IN_USE) { + rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name); + /* + ** structure assign, then sort out the bits we shouldn't have done + */ + *HostMapP = *MapP; + + HostMapP->Flags = SLOT_IN_USE; + if (MapP->Flags & RTA16_SECOND_SLOT) + HostMapP->Flags |= RTA16_SECOND_SLOT; + + RIOReMapPorts(p, HostP, HostMapP); + } else { + rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name); + } + } + + for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) { + p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry]; + } + + for (Host = 0; Host < p->RIONumHosts; Host++) { + for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) { + p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT; + p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK; + } + for (Entry = 0; Entry < MAX_RUP; Entry++) { + for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) { + p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT; + p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK; + } + } + if (!p->RIOHosts[Host].Name[0]) { + memcpy(p->RIOHosts[Host].Name, "HOST 1", 7); + p->RIOHosts[Host].Name[5] += Host; + } + /* + ** Check that default name assigned is unique. + */ + Host1 = Host; + NameIsUnique = 0; + while (!NameIsUnique) { + NameIsUnique = 1; + for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) { + if (Host2 == Host) + continue; + if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name) + == 0) { + NameIsUnique = 0; + Host1++; + if (Host1 >= p->RIONumHosts) + Host1 = 0; + p->RIOHosts[Host].Name[5] = '1' + Host1; + } + } + } + /* + ** Rename host if name already used. + */ + if (Host1 != Host) { + rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name); + memcpy(p->RIOHosts[Host].Name, "HOST 1", 7); + p->RIOHosts[Host].Name[5] += Host1; + } + rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name); + } + return 0; +} + +/* +** User process needs the config table - build it from first +** principles. +** +* FIXME: SMP locking +*/ +int RIOApel(struct rio_info *p) +{ + int Host; + int link; + int Rup; + int Next = 0; + struct Map *MapP; + struct Host *HostP; + unsigned long flags; + + rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n"); + + memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES); + + for (Host = 0; Host < RIO_HOSTS; Host++) { + rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host); + HostP = &p->RIOHosts[Host]; + rio_spin_lock_irqsave(&HostP->HostLock, flags); + + MapP = &p->RIOConnectTable[Next++]; + MapP->HostUniqueNum = HostP->UniqueNum; + if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { + rio_spin_unlock_irqrestore(&HostP->HostLock, flags); + continue; + } + MapP->RtaUniqueNum = 0; + MapP->ID = 0; + MapP->Flags = SLOT_IN_USE; + MapP->SysPort = NO_PORT; + for (link = 0; link < LINKS_PER_UNIT; link++) + MapP->Topology[link] = HostP->Topology[link]; + memcpy(MapP->Name, HostP->Name, MAX_NAME_LEN); + for (Rup = 0; Rup < MAX_RUP; Rup++) { + if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) { + p->RIOConnectTable[Next] = HostP->Mapping[Rup]; + if (HostP->Mapping[Rup].Flags & SLOT_IN_USE) + p->RIOConnectTable[Next].Flags |= SLOT_IN_USE; + if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE) + p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE; + if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT) + p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT; + Next++; + } + } + rio_spin_unlock_irqrestore(&HostP->HostLock, flags); + } + return 0; +} + +/* +** config.rio has taken a dislike to one of the gross maps entries. +** if the entry is suitably inactive, then we can gob on it and remove +** it from the table. +*/ +int RIODeleteRta(struct rio_info *p, struct Map *MapP) +{ + int host, entry, port, link; + int SysPort; + struct Host *HostP; + struct Map *HostMapP; + struct Port *PortP; + int work_done = 0; + unsigned long lock_flags, sem_flags; + + rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum); + + for (host = 0; host < p->RIONumHosts; host++) { + HostP = &p->RIOHosts[host]; + + rio_spin_lock_irqsave(&HostP->HostLock, lock_flags); + + if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { + rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags); + continue; + } + + for (entry = 0; entry < MAX_RUP; entry++) { + if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) { + HostMapP = &HostP->Mapping[entry]; + rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name); + + /* + ** Check all four links of the unit are disconnected + */ + for (link = 0; link < LINKS_PER_UNIT; link++) { + if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) { + rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n"); + p->RIOError.Error = UNIT_IS_IN_USE; + rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags); + return -EBUSY; + } + } + /* + ** Slot has been allocated, BUT not booted/routed/ + ** connected/selected or anything else-ed + */ + SysPort = HostMapP->SysPort; + + if (SysPort != NO_PORT) { + for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) { + PortP = p->RIOPortp[port]; + rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n"); + + rio_spin_lock_irqsave(&PortP->portSem, sem_flags); + + PortP->Mapped = 0; + + if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) { + + rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n"); + PortP->TxBufferIn = PortP->TxBufferOut = 0; + /* What should I do + wakeup( &PortP->TxBufferIn ); + wakeup( &PortP->TxBufferOut); + */ + PortP->InUse = NOT_INUSE; + /* What should I do + wakeup( &PortP->InUse ); + signal(PortP->TtyP->t_pgrp,SIGKILL); + ttyflush(PortP->TtyP,(FREAD|FWRITE)); + */ + PortP->State |= RIO_CLOSING | RIO_DELETED; + } + + /* + ** For the second slot of a 16 port RTA, the + ** driver needs to reset the changes made to + ** the phb to port mappings in RIORouteRup. + */ + if (PortP->SecondBlock) { + u16 dest_unit = HostMapP->ID; + u16 dest_port = port - SysPort; + u16 __iomem *TxPktP; + struct PKT __iomem *Pkt; + + for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) { + /* + ** *TxPktP is the pointer to the + ** transmit packet on the host card. + ** This needs to be translated into + ** a 32 bit pointer so it can be + ** accessed from the driver. + */ + Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&*TxPktP)); + rio_dprintk(RIO_DEBUG_TABLE, "Tx packet (%x) destination: Old %x:%x New %x:%x\n", readw(TxPktP), readb(&Pkt->dest_unit), readb(&Pkt->dest_port), dest_unit, dest_port); + writew(dest_unit, &Pkt->dest_unit); + writew(dest_port, &Pkt->dest_port); + } + rio_dprintk(RIO_DEBUG_TABLE, "Port %d phb destination: Old %x:%x New %x:%x\n", port, readb(&PortP->PhbP->destination) & 0xff, (readb(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port); + writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination); + } + rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags); + } + } + rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n"); + memset(HostMapP, 0, sizeof(struct Map)); + work_done++; + } + } + rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags); + } + + /* XXXXX lock me up */ + for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) { + if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) { + memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map)); + work_done++; + } + if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) { + memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map)); + work_done++; + } + } + if (work_done) + return 0; + + rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n"); + p->RIOError.Error = COULDNT_FIND_ENTRY; + return -ENXIO; +} + +int RIOAssignRta(struct rio_info *p, struct Map *MapP) +{ + int host; + struct Map *HostMapP; + char *sptr; + int link; + + + rio_dprintk(RIO_DEBUG_TABLE, "Assign entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort); + + if ((MapP->ID != (u16) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) { + rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n"); + p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + if (MapP->RtaUniqueNum == 0) { + rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n"); + p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO; + return -EINVAL; + } + if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) { + rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA); + p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) { + rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort); + p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + + /* + ** Copy the name across to the map entry. + */ + MapP->Name[MAX_NAME_LEN - 1] = '\0'; + sptr = MapP->Name; + while (*sptr) { + if (*sptr < ' ' || *sptr > '~') { + rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n"); + p->RIOError.Error = BAD_CHARACTER_IN_NAME; + return -EINVAL; + } + sptr++; + } + + for (host = 0; host < p->RIONumHosts; host++) { + if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) { + if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) { + p->RIOError.Error = HOST_NOT_RUNNING; + return -ENXIO; + } + + /* + ** Now we have a host we need to allocate an ID + ** if the entry does not already have one. + */ + if (MapP->ID == (u16) - 1) { + int nNewID; + + rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name); + /* + ** The idea here is to allow RTA's to be assigned + ** before they actually appear on the network. + ** This allows the addition of RTA's without having + ** to plug them in. + ** What we do is: + ** - Find a free ID and allocate it to the RTA. + ** - If this map entry is the second half of a + ** 16 port entry then find the other half and + ** make sure the 2 cross reference each other. + */ + if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) { + p->RIOError.Error = COULDNT_FIND_ENTRY; + return -EBUSY; + } + MapP->ID = (u16) nNewID + 1; + rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID); + HostMapP = &p->RIOHosts[host].Mapping[nNewID]; + HostMapP->RtaUniqueNum = MapP->RtaUniqueNum; + HostMapP->HostUniqueNum = MapP->HostUniqueNum; + HostMapP->ID = MapP->ID; + for (link = 0; link < LINKS_PER_UNIT; link++) { + HostMapP->Topology[link].Unit = ROUTE_DISCONNECT; + HostMapP->Topology[link].Link = NO_LINK; + } + if (MapP->Flags & RTA16_SECOND_SLOT) { + int unit; + + for (unit = 0; unit < MAX_RUP; unit++) + if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum) + break; + if (unit == MAX_RUP) { + p->RIOError.Error = COULDNT_FIND_ENTRY; + return -EBUSY; + } + HostMapP->Flags |= RTA16_SECOND_SLOT; + HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID; + p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID; + rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID); + } + } + + HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1]; + + if (HostMapP->Flags & SLOT_IN_USE) { + rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID); + p->RIOError.Error = ID_ALREADY_IN_USE; + return -EBUSY; + } + + /* + ** Assign the sys ports and the name, and mark the slot as + ** being in use. + */ + HostMapP->SysPort = MapP->SysPort; + if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) + memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN); + HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED; +#ifdef NEED_TO_FIX + RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]); +#endif + if (MapP->Flags & RTA16_SECOND_SLOT) + HostMapP->Flags |= RTA16_SECOND_SLOT; + + RIOReMapPorts(p, &p->RIOHosts[host], HostMapP); + /* + ** Adjust 2nd block of 8 phbs + */ + if (MapP->Flags & RTA16_SECOND_SLOT) + RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1); + + if (HostMapP->SysPort != NO_PORT) { + if (HostMapP->SysPort < p->RIOFirstPortsBooted) + p->RIOFirstPortsBooted = HostMapP->SysPort; + if (HostMapP->SysPort > p->RIOLastPortsBooted) + p->RIOLastPortsBooted = HostMapP->SysPort; + } + if (MapP->Flags & RTA16_SECOND_SLOT) + rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name); + else + rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name); + return 0; + } + } + p->RIOError.Error = UNKNOWN_HOST_NUMBER; + rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum); + return -ENXIO; +} + + +int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP) +{ + struct Port *PortP; + unsigned int SubEnt; + unsigned int HostPort; + unsigned int SysPort; + u16 RtaType; + unsigned long flags; + + rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID); + + /* + ** We need to tell the UnixRups which sysport the rup corresponds to + */ + HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort; + + if (HostMapP->SysPort == NO_PORT) + return (0); + + RtaType = GetUnitType(HostMapP->RtaUniqueNum); + rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1); + + /* + ** now map each of its eight ports + */ + for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) { + rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort); + SysPort = HostMapP->SysPort + SubEnt; /* portnumber within system */ + /* portnumber on host */ + + HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt; + + rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp); + PortP = p->RIOPortp[SysPort]; + rio_dprintk(RIO_DEBUG_TABLE, "Map port\n"); + + /* + ** Point at all the real neat data structures + */ + rio_spin_lock_irqsave(&PortP->portSem, flags); + PortP->HostP = HostP; + PortP->Caddr = HostP->Caddr; + + /* + ** The PhbP cannot be filled in yet + ** unless the host has been booted + */ + if ((HostP->Flags & RUN_STATE) == RC_RUNNING) { + struct PHB __iomem *PhbP = PortP->PhbP = &HostP->PhbP[HostPort]; + PortP->TxAdd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add)); + PortP->TxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start)); + PortP->TxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end)); + PortP->RxRemove = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove)); + PortP->RxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start)); + PortP->RxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end)); + } else + PortP->PhbP = NULL; + + /* + ** port related flags + */ + PortP->HostPort = HostPort; + /* + ** For each part of a 16 port RTA, RupNum is ID - 1. + */ + PortP->RupNum = HostMapP->ID - 1; + if (HostMapP->Flags & RTA16_SECOND_SLOT) { + PortP->ID2 = HostMapP->ID2 - 1; + PortP->SecondBlock = 1; + } else { + PortP->ID2 = 0; + PortP->SecondBlock = 0; + } + PortP->RtaUniqueNum = HostMapP->RtaUniqueNum; + + /* + ** If the port was already mapped then thats all we need to do. + */ + if (PortP->Mapped) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + continue; + } else + HostMapP->Flags &= ~RTA_NEWBOOT; + + PortP->State = 0; + PortP->Config = 0; + /* + ** Check out the module type - if it is special (read only etc.) + ** then we need to set flags in the PortP->Config. + ** Note: For 16 port RTA, all ports are of the same type. + */ + if (RtaType == TYPE_RTA16) { + PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE]; + } else { + if (SubEnt < PORTS_PER_MODULE) + PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE]; + else + PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE]; + } + + /* + ** more port related flags + */ + PortP->PortState = 0; + PortP->ModemLines = 0; + PortP->ModemState = 0; + PortP->CookMode = COOK_WELL; + PortP->ParamSem = 0; + PortP->FlushCmdBodge = 0; + PortP->WflushFlag = 0; + PortP->MagicFlags = 0; + PortP->Lock = 0; + PortP->Store = 0; + PortP->FirstOpen = 1; + + /* + ** Buffers 'n things + */ + PortP->RxDataStart = 0; + PortP->Cor2Copy = 0; + PortP->Name = &HostMapP->Name[0]; + PortP->statsGather = 0; + PortP->txchars = 0; + PortP->rxchars = 0; + PortP->opens = 0; + PortP->closes = 0; + PortP->ioctls = 0; + if (PortP->TxRingBuffer) + memset(PortP->TxRingBuffer, 0, p->RIOBufferSize); + else if (p->RIOBufferSize) { + PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL); + } + PortP->TxBufferOut = 0; + PortP->TxBufferIn = 0; + PortP->Debug = 0; + /* + ** LastRxTgl stores the state of the rx toggle bit for this + ** port, to be compared with the state of the next pkt received. + ** If the same, we have received the same rx pkt from the RTA + ** twice. Initialise to a value not equal to PHB_RX_TGL or 0. + */ + PortP->LastRxTgl = ~(u8) PHB_RX_TGL; + + /* + ** and mark the port as usable + */ + PortP->Mapped = 1; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + } + if (HostMapP->SysPort < p->RIOFirstPortsMapped) + p->RIOFirstPortsMapped = HostMapP->SysPort; + if (HostMapP->SysPort > p->RIOLastPortsMapped) + p->RIOLastPortsMapped = HostMapP->SysPort; + + return 0; +} + +int RIOChangeName(struct rio_info *p, struct Map *MapP) +{ + int host; + struct Map *HostMapP; + char *sptr; + + rio_dprintk(RIO_DEBUG_TABLE, "Change name entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort); + + if (MapP->ID > MAX_RUP) { + rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n"); + p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE; + return -EINVAL; + } + + MapP->Name[MAX_NAME_LEN - 1] = '\0'; + sptr = MapP->Name; + + while (*sptr) { + if (*sptr < ' ' || *sptr > '~') { + rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n"); + p->RIOError.Error = BAD_CHARACTER_IN_NAME; + return -EINVAL; + } + sptr++; + } + + for (host = 0; host < p->RIONumHosts; host++) { + if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) { + if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) { + p->RIOError.Error = HOST_NOT_RUNNING; + return -ENXIO; + } + if (MapP->ID == 0) { + memcpy(p->RIOHosts[host].Name, MapP->Name, MAX_NAME_LEN); + return 0; + } + + HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1]; + + if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) { + p->RIOError.Error = RTA_NUMBER_WRONG; + return -ENXIO; + } + memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN); + return 0; + } + } + p->RIOError.Error = UNKNOWN_HOST_NUMBER; + rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum); + return -ENXIO; +} diff --git a/drivers/staging/generic_serial/rio/riotty.c b/drivers/staging/generic_serial/rio/riotty.c new file mode 100644 index 000000000000..8a90393faf3c --- /dev/null +++ b/drivers/staging/generic_serial/rio/riotty.c @@ -0,0 +1,654 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : riotty.c +** SID : 1.3 +** Last Modified : 11/6/98 10:33:47 +** Retrieved : 11/6/98 10:33:50 +** +** ident @(#)riotty.c 1.3 +** +** ----------------------------------------------------------------------------- +*/ + +#define __EXPLICIT_DEF_H__ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include + + +#include "linux_compat.h" +#include "rio_linux.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "cmdpkt.h" +#include "map.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "cirrus.h" +#include "rioioctl.h" +#include "param.h" + +static void RIOClearUp(struct Port *PortP); + +/* Below belongs in func.h */ +int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg); + + +extern struct rio_info *p; + + +int riotopen(struct tty_struct *tty, struct file *filp) +{ + unsigned int SysPort; + int repeat_this = 250; + struct Port *PortP; /* pointer to the port structure */ + unsigned long flags; + int retval = 0; + + func_enter(); + + /* Make sure driver_data is NULL in case the rio isn't booted jet. Else gs_close + is going to oops. + */ + tty->driver_data = NULL; + + SysPort = rio_minor(tty); + + if (p->RIOFailed) { + rio_dprintk(RIO_DEBUG_TTY, "System initialisation failed\n"); + func_exit(); + return -ENXIO; + } + + rio_dprintk(RIO_DEBUG_TTY, "port open SysPort %d (mapped:%d)\n", SysPort, p->RIOPortp[SysPort]->Mapped); + + /* + ** Validate that we have received a legitimate request. + ** Currently, just check that we are opening a port on + ** a host card that actually exists, and that the port + ** has been mapped onto a host. + */ + if (SysPort >= RIO_PORTS) { /* out of range ? */ + rio_dprintk(RIO_DEBUG_TTY, "Illegal port number %d\n", SysPort); + func_exit(); + return -ENXIO; + } + + /* + ** Grab pointer to the port stucture + */ + PortP = p->RIOPortp[SysPort]; /* Get control struc */ + rio_dprintk(RIO_DEBUG_TTY, "PortP: %p\n", PortP); + if (!PortP->Mapped) { /* we aren't mapped yet! */ + /* + ** The system doesn't know which RTA this port + ** corresponds to. + */ + rio_dprintk(RIO_DEBUG_TTY, "port not mapped into system\n"); + func_exit(); + return -ENXIO; + } + + tty->driver_data = PortP; + + PortP->gs.port.tty = tty; + PortP->gs.port.count++; + + rio_dprintk(RIO_DEBUG_TTY, "%d bytes in tx buffer\n", PortP->gs.xmit_cnt); + + retval = gs_init_port(&PortP->gs); + if (retval) { + PortP->gs.port.count--; + return -ENXIO; + } + /* + ** If the host hasn't been booted yet, then + ** fail + */ + if ((PortP->HostP->Flags & RUN_STATE) != RC_RUNNING) { + rio_dprintk(RIO_DEBUG_TTY, "Host not running\n"); + func_exit(); + return -ENXIO; + } + + /* + ** If the RTA has not booted yet and the user has choosen to block + ** until the RTA is present then we must spin here waiting for + ** the RTA to boot. + */ + /* I find the above code a bit hairy. I find the below code + easier to read and shorter. Now, if it works too that would + be great... -- REW + */ + rio_dprintk(RIO_DEBUG_TTY, "Checking if RTA has booted... \n"); + while (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)) { + if (!PortP->WaitUntilBooted) { + rio_dprintk(RIO_DEBUG_TTY, "RTA never booted\n"); + func_exit(); + return -ENXIO; + } + + /* Under Linux you'd normally use a wait instead of this + busy-waiting. I'll stick with the old implementation for + now. --REW + */ + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_TTY, "RTA_wait_for_boot: EINTR in delay \n"); + func_exit(); + return -EINTR; + } + if (repeat_this-- <= 0) { + rio_dprintk(RIO_DEBUG_TTY, "Waiting for RTA to boot timeout\n"); + func_exit(); + return -EIO; + } + } + rio_dprintk(RIO_DEBUG_TTY, "RTA has been booted\n"); + rio_spin_lock_irqsave(&PortP->portSem, flags); + if (p->RIOHalted) { + goto bombout; + } + + /* + ** If the port is in the final throws of being closed, + ** we should wait here (politely), waiting + ** for it to finish, so that it doesn't close us! + */ + while ((PortP->State & RIO_CLOSING) && !p->RIOHalted) { + rio_dprintk(RIO_DEBUG_TTY, "Waiting for RIO_CLOSING to go away\n"); + if (repeat_this-- <= 0) { + rio_dprintk(RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); + retval = -EINTR; + goto bombout; + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_spin_lock_irqsave(&PortP->portSem, flags); + retval = -EINTR; + goto bombout; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + if (!PortP->Mapped) { + rio_dprintk(RIO_DEBUG_TTY, "Port unmapped while closing!\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + retval = -ENXIO; + func_exit(); + return retval; + } + + if (p->RIOHalted) { + goto bombout; + } + +/* +** 15.10.1998 ARG - ESIL 0761 part fix +** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure, +** we need to make sure that the flags are clear when the port is opened. +*/ + /* Uh? Suppose I turn these on and then another process opens + the port again? The flags get cleared! Not good. -- REW */ + if (!(PortP->State & (RIO_LOPEN | RIO_MOPEN))) { + PortP->Config &= ~(RIO_CTSFLOW | RIO_RTSFLOW); + } + + if (!(PortP->firstOpen)) { /* First time ? */ + rio_dprintk(RIO_DEBUG_TTY, "First open for this port\n"); + + + PortP->firstOpen++; + PortP->CookMode = 0; /* XXX RIOCookMode(tp); */ + PortP->InUse = NOT_INUSE; + + /* Tentative fix for bug PR27. Didn't work. */ + /* PortP->gs.xmit_cnt = 0; */ + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + + /* Someone explain to me why this delay/config is + here. If I read the docs correctly the "open" + command piggybacks the parameters immediately. + -- REW */ + RIOParam(PortP, RIOC_OPEN, 1, OK_TO_SLEEP); /* Open the port */ + rio_spin_lock_irqsave(&PortP->portSem, flags); + + /* + ** wait for the port to be not closed. + */ + while (!(PortP->PortState & PORT_ISOPEN) && !p->RIOHalted) { + rio_dprintk(RIO_DEBUG_TTY, "Waiting for PORT_ISOPEN-currently %x\n", PortP->PortState); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_TTY, "Waiting for open to finish broken by signal\n"); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); + func_exit(); + return -EINTR; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + if (p->RIOHalted) { + retval = -EIO; + bombout: + /* RIOClearUp( PortP ); */ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + } + rio_dprintk(RIO_DEBUG_TTY, "PORT_ISOPEN found\n"); + } + rio_dprintk(RIO_DEBUG_TTY, "Modem - test for carrier\n"); + /* + ** ACTION + ** insert test for carrier here. -- ??? + ** I already see that test here. What's the deal? -- REW + */ + if ((PortP->gs.port.tty->termios->c_cflag & CLOCAL) || + (PortP->ModemState & RIOC_MSVR1_CD)) { + rio_dprintk(RIO_DEBUG_TTY, "open(%d) Modem carr on\n", SysPort); + /* + tp->tm.c_state |= CARR_ON; + wakeup((caddr_t) &tp->tm.c_canq); + */ + PortP->State |= RIO_CARR_ON; + wake_up_interruptible(&PortP->gs.port.open_wait); + } else { /* no carrier - wait for DCD */ + /* + while (!(PortP->gs.port.tty->termios->c_state & CARR_ON) && + !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted ) + */ + while (!(PortP->State & RIO_CARR_ON) && !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted) { + rio_dprintk(RIO_DEBUG_TTY, "open(%d) sleeping for carr on\n", SysPort); + /* + PortP->gs.port.tty->termios->c_state |= WOPEN; + */ + PortP->State |= RIO_WOPEN; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_spin_lock_irqsave(&PortP->portSem, flags); + /* + ** ACTION: verify that this is a good thing + ** to do here. -- ??? + ** I think it's OK. -- REW + */ + rio_dprintk(RIO_DEBUG_TTY, "open(%d) sleeping for carr broken by signal\n", SysPort); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); + /* + tp->tm.c_state &= ~WOPEN; + */ + PortP->State &= ~RIO_WOPEN; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + func_exit(); + return -EINTR; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + PortP->State &= ~RIO_WOPEN; + } + if (p->RIOHalted) + goto bombout; + rio_dprintk(RIO_DEBUG_TTY, "Setting RIO_MOPEN\n"); + PortP->State |= RIO_MOPEN; + + if (p->RIOHalted) + goto bombout; + + rio_dprintk(RIO_DEBUG_TTY, "high level open done\n"); + + /* + ** Count opens for port statistics reporting + */ + if (PortP->statsGather) + PortP->opens++; + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + rio_dprintk(RIO_DEBUG_TTY, "Returning from open\n"); + func_exit(); + return 0; +} + +/* +** RIOClose the port. +** The operating system thinks that this is last close for the device. +** As there are two interfaces to the port (Modem and tty), we need to +** check that both are closed before we close the device. +*/ +int riotclose(void *ptr) +{ + struct Port *PortP = ptr; /* pointer to the port structure */ + int deleted = 0; + int try = -1; /* Disable the timeouts by setting them to -1 */ + int repeat_this = -1; /* Congrats to those having 15 years of + uptime! (You get to break the driver.) */ + unsigned long end_time; + struct tty_struct *tty; + unsigned long flags; + int rv = 0; + + rio_dprintk(RIO_DEBUG_TTY, "port close SysPort %d\n", PortP->PortNum); + + /* PortP = p->RIOPortp[SysPort]; */ + rio_dprintk(RIO_DEBUG_TTY, "Port is at address %p\n", PortP); + /* tp = PortP->TtyP; *//* Get tty */ + tty = PortP->gs.port.tty; + rio_dprintk(RIO_DEBUG_TTY, "TTY is at address %p\n", tty); + + if (PortP->gs.closing_wait) + end_time = jiffies + PortP->gs.closing_wait; + else + end_time = jiffies + MAX_SCHEDULE_TIMEOUT; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + + /* + ** Setting this flag will make any process trying to open + ** this port block until we are complete closing it. + */ + PortP->State |= RIO_CLOSING; + + if ((PortP->State & RIO_DELETED)) { + rio_dprintk(RIO_DEBUG_TTY, "Close on deleted RTA\n"); + deleted = 1; + } + + if (p->RIOHalted) { + RIOClearUp(PortP); + rv = -EIO; + goto close_end; + } + + rio_dprintk(RIO_DEBUG_TTY, "Clear bits\n"); + /* + ** clear the open bits for this device + */ + PortP->State &= ~RIO_MOPEN; + PortP->State &= ~RIO_CARR_ON; + PortP->ModemState &= ~RIOC_MSVR1_CD; + /* + ** If the device was open as both a Modem and a tty line + ** then we need to wimp out here, as the port has not really + ** been finally closed (gee, whizz!) The test here uses the + ** bit for the OTHER mode of operation, to see if THAT is + ** still active! + */ + if ((PortP->State & (RIO_LOPEN | RIO_MOPEN))) { + /* + ** The port is still open for the other task - + ** return, pretending that we are still active. + */ + rio_dprintk(RIO_DEBUG_TTY, "Channel %d still open !\n", PortP->PortNum); + PortP->State &= ~RIO_CLOSING; + if (PortP->firstOpen) + PortP->firstOpen--; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EIO; + } + + rio_dprintk(RIO_DEBUG_TTY, "Closing down - everything must go!\n"); + + PortP->State &= ~RIO_DYNOROD; + + /* + ** This is where we wait for the port + ** to drain down before closing. Bye-bye.... + ** (We never meant to do this) + */ + rio_dprintk(RIO_DEBUG_TTY, "Timeout 1 starts\n"); + + if (!deleted) + while ((PortP->InUse != NOT_INUSE) && !p->RIOHalted && (PortP->TxBufferIn != PortP->TxBufferOut)) { + if (repeat_this-- <= 0) { + rv = -EINTR; + rio_dprintk(RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); + goto close_end; + } + rio_dprintk(RIO_DEBUG_TTY, "Calling timeout to flush in closing\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay_ni(PortP, HUNDRED_MS * 10) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_TTY, "RTA EINTR in delay \n"); + rv = -EINTR; + rio_spin_lock_irqsave(&PortP->portSem, flags); + goto close_end; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + PortP->TxBufferIn = PortP->TxBufferOut = 0; + repeat_this = 0xff; + + PortP->InUse = 0; + if ((PortP->State & (RIO_LOPEN | RIO_MOPEN))) { + /* + ** The port has been re-opened for the other task - + ** return, pretending that we are still active. + */ + rio_dprintk(RIO_DEBUG_TTY, "Channel %d re-open!\n", PortP->PortNum); + PortP->State &= ~RIO_CLOSING; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (PortP->firstOpen) + PortP->firstOpen--; + return -EIO; + } + + if (p->RIOHalted) { + RIOClearUp(PortP); + goto close_end; + } + + /* Can't call RIOShortCommand with the port locked. */ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + + if (RIOShortCommand(p, PortP, RIOC_CLOSE, 1, 0) == RIO_FAIL) { + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); + rio_spin_lock_irqsave(&PortP->portSem, flags); + goto close_end; + } + + if (!deleted) + while (try && (PortP->PortState & PORT_ISOPEN)) { + try--; + if (time_after(jiffies, end_time)) { + rio_dprintk(RIO_DEBUG_TTY, "Run out of tries - force the bugger shut!\n"); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); + break; + } + rio_dprintk(RIO_DEBUG_TTY, "Close: PortState:ISOPEN is %d\n", PortP->PortState & PORT_ISOPEN); + + if (p->RIOHalted) { + RIOClearUp(PortP); + rio_spin_lock_irqsave(&PortP->portSem, flags); + goto close_end; + } + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_dprintk(RIO_DEBUG_TTY, "RTA EINTR in delay \n"); + RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); + break; + } + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + rio_dprintk(RIO_DEBUG_TTY, "Close: try was %d on completion\n", try); + + /* RIOPreemptiveCmd(p, PortP, RIOC_FCLOSE); */ + +/* +** 15.10.1998 ARG - ESIL 0761 part fix +** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure,** we need to make sure that the flags are clear when the port is opened. +*/ + PortP->Config &= ~(RIO_CTSFLOW | RIO_RTSFLOW); + + /* + ** Count opens for port statistics reporting + */ + if (PortP->statsGather) + PortP->closes++; + +close_end: + /* XXX: Why would a "DELETED" flag be reset here? I'd have + thought that a "deleted" flag means that the port was + permanently gone, but here we can make it reappear by it + being in close during the "deletion". + */ + PortP->State &= ~(RIO_CLOSING | RIO_DELETED); + if (PortP->firstOpen) + PortP->firstOpen--; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + rio_dprintk(RIO_DEBUG_TTY, "Return from close\n"); + return rv; +} + + + +static void RIOClearUp(struct Port *PortP) +{ + rio_dprintk(RIO_DEBUG_TTY, "RIOHalted set\n"); + PortP->Config = 0; /* Direct semaphore */ + PortP->PortState = 0; + PortP->firstOpen = 0; + PortP->FlushCmdBodge = 0; + PortP->ModemState = PortP->CookMode = 0; + PortP->Mapped = 0; + PortP->WflushFlag = 0; + PortP->MagicFlags = 0; + PortP->RxDataStart = 0; + PortP->TxBufferIn = 0; + PortP->TxBufferOut = 0; +} + +/* +** Put a command onto a port. +** The PortPointer, command, length and arg are passed. +** The len is the length *inclusive* of the command byte, +** and so for a command that takes no data, len==1. +** The arg is a single byte, and is only used if len==2. +** Other values of len aren't allowed, and will cause +** a panic. +*/ +int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg) +{ + struct PKT __iomem *PacketP; + int retries = 20; /* at 10 per second -> 2 seconds */ + unsigned long flags; + + rio_dprintk(RIO_DEBUG_TTY, "entering shortcommand.\n"); + + if (PortP->State & RIO_DELETED) { + rio_dprintk(RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n"); + return RIO_FAIL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + + /* + ** If the port is in use for pre-emptive command, then wait for it to + ** be free again. + */ + while ((PortP->InUse != NOT_INUSE) && !p->RIOHalted) { + rio_dprintk(RIO_DEBUG_TTY, "Waiting for not in use (%d)\n", retries); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (retries-- <= 0) { + return RIO_FAIL; + } + if (RIODelay_ni(PortP, HUNDRED_MS) == RIO_FAIL) { + return RIO_FAIL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + if (PortP->State & RIO_DELETED) { + rio_dprintk(RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return RIO_FAIL; + } + + while (!can_add_transmit(&PacketP, PortP) && !p->RIOHalted) { + rio_dprintk(RIO_DEBUG_TTY, "Waiting to add short command to queue (%d)\n", retries); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (retries-- <= 0) { + rio_dprintk(RIO_DEBUG_TTY, "out of tries. Failing\n"); + return RIO_FAIL; + } + if (RIODelay_ni(PortP, HUNDRED_MS) == RIO_FAIL) { + return RIO_FAIL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + if (p->RIOHalted) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return RIO_FAIL; + } + + /* + ** set the command byte and the argument byte + */ + writeb(command, &PacketP->data[0]); + + if (len == 2) + writeb(arg, &PacketP->data[1]); + + /* + ** set the length of the packet and set the command bit. + */ + writeb(PKT_CMD_BIT | len, &PacketP->len); + + add_transmit(PortP); + /* + ** Count characters transmitted for port statistics reporting + */ + if (PortP->statsGather) + PortP->txchars += len; + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return p->RIOHalted ? RIO_FAIL : ~RIO_FAIL; +} + + diff --git a/drivers/staging/generic_serial/rio/route.h b/drivers/staging/generic_serial/rio/route.h new file mode 100644 index 000000000000..46e963771c30 --- /dev/null +++ b/drivers/staging/generic_serial/rio/route.h @@ -0,0 +1,101 @@ +/**************************************************************************** + ******* ******* + ******* R O U T E H E A D E R + ******* ******* + **************************************************************************** + + Author : Ian Nandhra / Jeremy Rolls + Date : + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- + + ***************************************************************************/ + +#ifndef _route_h +#define _route_h + +#define MAX_LINKS 4 +#define MAX_NODES 17 /* Maximum nodes in a subnet */ +#define NODE_BYTES ((MAX_NODES / 8) + 1) /* Number of bytes needed for + 1 bit per node */ +#define ROUTE_DATA_SIZE (NODE_BYTES + 2) /* Number of bytes for complete + info about cost etc. */ +#define ROUTES_PER_PACKET ((PKT_MAX_DATA_LEN -2)/ ROUTE_DATA_SIZE) + /* Number of nodes we can squeeze + into one packet */ +#define MAX_TOPOLOGY_PACKETS (MAX_NODES / ROUTES_PER_PACKET + 1) +/************************************************ + * Define the types of command for the ROUTE RUP. + ************************************************/ +#define ROUTE_REQUEST 0 /* Request an ID */ +#define ROUTE_FOAD 1 /* Kill the RTA */ +#define ROUTE_ALREADY 2 /* ID given already */ +#define ROUTE_USED 3 /* All ID's used */ +#define ROUTE_ALLOCATE 4 /* Here it is */ +#define ROUTE_REQ_TOP 5 /* I bet you didn't expect.... + the Topological Inquisition */ +#define ROUTE_TOPOLOGY 6 /* Topology request answered FD */ +/******************************************************************* + * Define the Route Map Structure + * + * The route map gives a pointer to a Link Structure to use. + * This allows Disconnected Links to be checked quickly + ******************************************************************/ +typedef struct COST_ROUTE COST_ROUTE; +struct COST_ROUTE { + unsigned char cost; /* Cost down this link */ + unsigned char route[NODE_BYTES]; /* Nodes through this route */ +}; + +typedef struct ROUTE_STR ROUTE_STR; +struct ROUTE_STR { + COST_ROUTE cost_route[MAX_LINKS]; + /* cost / route for this link */ + ushort favoured; /* favoured link */ +}; + + +#define NO_LINK (short) 5 /* Link unattached */ +#define ROUTE_NO_ID (short) 100 /* No Id */ +#define ROUTE_DISCONNECT (ushort) 0xff /* Not connected */ +#define ROUTE_INTERCONNECT (ushort) 0x40 /* Sub-net interconnect */ + + +#define SYNC_RUP (ushort) 255 +#define COMMAND_RUP (ushort) 254 +#define ERROR_RUP (ushort) 253 +#define POLL_RUP (ushort) 252 +#define BOOT_RUP (ushort) 251 +#define ROUTE_RUP (ushort) 250 +#define STATUS_RUP (ushort) 249 +#define POWER_RUP (ushort) 248 + +#define HIGHEST_RUP (ushort) 255 /* Set to Top one */ +#define LOWEST_RUP (ushort) 248 /* Set to bottom one */ + +#endif + +/*********** end of file ***********/ diff --git a/drivers/staging/generic_serial/rio/rup.h b/drivers/staging/generic_serial/rio/rup.h new file mode 100644 index 000000000000..4ae90cb207a9 --- /dev/null +++ b/drivers/staging/generic_serial/rio/rup.h @@ -0,0 +1,69 @@ +/**************************************************************************** + ******* ******* + ******* R U P S T R U C T U R E + ******* ******* + **************************************************************************** + + Author : Ian Nandhra + Date : + + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + Version : 0.01 + + + Mods + ---------------------------------------------------------------------------- + Date By Description + ---------------------------------------------------------------------------- + + ***************************************************************************/ + +#ifndef _rup_h +#define _rup_h 1 + +#define MAX_RUP ((short) 16) +#define PKTS_PER_RUP ((short) 2) /* They are always used in pairs */ + +/************************************************* + * Define all the packet request stuff + ************************************************/ +#define TX_RUP_INACTIVE 0 /* Nothing to transmit */ +#define TX_PACKET_READY 1 /* Transmit packet ready */ +#define TX_LOCK_RUP 2 /* Transmit side locked */ + +#define RX_RUP_INACTIVE 0 /* Nothing received */ +#define RX_PACKET_READY 1 /* Packet received */ + +#define RUP_NO_OWNER 0xff /* RUP not owned by any process */ + +struct RUP { + u16 txpkt; /* Outgoing packet */ + u16 rxpkt; /* Incoming packet */ + u16 link; /* Which link to send down? */ + u8 rup_dest_unit[2]; /* Destination unit */ + u16 handshake; /* For handshaking */ + u16 timeout; /* Timeout */ + u16 status; /* Status */ + u16 txcontrol; /* Transmit control */ + u16 rxcontrol; /* Receive control */ +}; + +#endif + +/*********** end of file ***********/ diff --git a/drivers/staging/generic_serial/rio/unixrup.h b/drivers/staging/generic_serial/rio/unixrup.h new file mode 100644 index 000000000000..7abf0cba0f2c --- /dev/null +++ b/drivers/staging/generic_serial/rio/unixrup.h @@ -0,0 +1,51 @@ +/* +** ----------------------------------------------------------------------------- +** +** Perle Specialix driver for Linux +** Ported from existing RIO Driver for SCO sources. + * + * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +** +** Module : unixrup.h +** SID : 1.2 +** Last Modified : 11/6/98 11:34:20 +** Retrieved : 11/6/98 11:34:22 +** +** ident @(#)unixrup.h 1.2 +** +** ----------------------------------------------------------------------------- +*/ + +#ifndef __rio_unixrup_h__ +#define __rio_unixrup_h__ + +/* +** UnixRup data structure. This contains pointers to actual RUPs on the +** host card, and all the command/boot control stuff. +*/ +struct UnixRup { + struct CmdBlk *CmdsWaitingP; /* Commands waiting to be done */ + struct CmdBlk *CmdPendingP; /* The command currently being sent */ + struct RUP __iomem *RupP; /* the Rup to send it to */ + unsigned int Id; /* Id number */ + unsigned int BaseSysPort; /* SysPort of first tty on this RTA */ + unsigned int ModTypes; /* Modules on this RTA */ + spinlock_t RupLock; /* Lock structure for MPX */ + /* struct lockb RupLock; *//* Lock structure for MPX */ +}; + +#endif /* __rio_unixrup_h__ */ diff --git a/drivers/staging/generic_serial/ser_a2232.c b/drivers/staging/generic_serial/ser_a2232.c new file mode 100644 index 000000000000..3f47c2ead8e5 --- /dev/null +++ b/drivers/staging/generic_serial/ser_a2232.c @@ -0,0 +1,831 @@ +/* drivers/char/ser_a2232.c */ + +/* $Id: ser_a2232.c,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */ + +/* Linux serial driver for the Amiga A2232 board */ + +/* This driver is MAINTAINED. Before applying any changes, please contact + * the author. + */ + +/* Copyright (c) 2000-2001 Enver Haase + * alias The A2232 driver project + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +/***************************** Documentation ************************/ +/* + * This driver is in EXPERIMENTAL state. That means I could not find + * someone with five A2232 boards with 35 ports running at 19200 bps + * at the same time and test the machine's behaviour. + * However, I know that you can performance-tweak this driver (see + * the source code). + * One thing to consider is the time this driver consumes during the + * Amiga's vertical blank interrupt. Everything that is to be done + * _IS DONE_ when entering the vertical blank interrupt handler of + * this driver. + * However, it would be more sane to only do the job for only ONE card + * instead of ALL cards at a time; or, more generally, to handle only + * SOME ports instead of ALL ports at a time. + * However, as long as no-one runs into problems I guess I shouldn't + * change the driver as it runs fine for me :) . + * + * Version history of this file: + * 0.4 Resolved licensing issues. + * 0.3 Inclusion in the Linux/m68k tree, small fixes. + * 0.2 Added documentation, minor typo fixes. + * 0.1 Initial release. + * + * TO DO: + * - Handle incoming BREAK events. I guess "Stevens: Advanced + * Programming in the UNIX(R) Environment" is a good reference + * on what is to be done. + * - When installing as a module, don't simply 'printk' text, but + * send it to the TTY used by the user. + * + * THANKS TO: + * - Jukka Marin (65EC02 code). + * - The other NetBSD developers on whose A2232 driver I had a + * pretty close look. However, I didn't copy any code so it + * is okay to put my code under the GPL and include it into + * Linux. + */ +/***************************** End of Documentation *****************/ + +/***************************** Defines ******************************/ +/* + * Enables experimental 115200 (normal) 230400 (turbo) baud rate. + * The A2232 specification states it can only operate at speeds up to + * 19200 bits per second, and I was not able to send a file via + * "sz"/"rz" and a null-modem cable from one A2232 port to another + * at 115200 bits per second. + * However, this might work for you. + */ +#undef A2232_SPEEDHACK +/* + * Default is not to use RTS/CTS so you could be talked to death. + */ +#define A2232_SUPPRESS_RTSCTS_WARNING +/************************* End of Defines ***************************/ + +/***************************** Includes *****************************/ +#include + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include + +#include "ser_a2232.h" +#include "ser_a2232fw.h" +/************************* End of Includes **************************/ + +/***************************** Prototypes ***************************/ +/* The interrupt service routine */ +static irqreturn_t a2232_vbl_inter(int irq, void *data); +/* Initialize the port structures */ +static void a2232_init_portstructs(void); +/* Initialize and register TTY drivers. */ +/* returns 0 IFF successful */ +static int a2232_init_drivers(void); + +/* BEGIN GENERIC_SERIAL PROTOTYPES */ +static void a2232_disable_tx_interrupts(void *ptr); +static void a2232_enable_tx_interrupts(void *ptr); +static void a2232_disable_rx_interrupts(void *ptr); +static void a2232_enable_rx_interrupts(void *ptr); +static int a2232_carrier_raised(struct tty_port *port); +static void a2232_shutdown_port(void *ptr); +static int a2232_set_real_termios(void *ptr); +static int a2232_chars_in_buffer(void *ptr); +static void a2232_close(void *ptr); +static void a2232_hungup(void *ptr); +/* static void a2232_getserial (void *ptr, struct serial_struct *sp); */ +/* END GENERIC_SERIAL PROTOTYPES */ + +/* Functions that the TTY driver struct expects */ +static int a2232_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg); +static void a2232_throttle(struct tty_struct *tty); +static void a2232_unthrottle(struct tty_struct *tty); +static int a2232_open(struct tty_struct * tty, struct file * filp); +/************************* End of Prototypes ************************/ + +/***************************** Global variables *********************/ +/*--------------------------------------------------------------------------- + * Interface from generic_serial.c back here + *--------------------------------------------------------------------------*/ +static struct real_driver a2232_real_driver = { + a2232_disable_tx_interrupts, + a2232_enable_tx_interrupts, + a2232_disable_rx_interrupts, + a2232_enable_rx_interrupts, + a2232_shutdown_port, + a2232_set_real_termios, + a2232_chars_in_buffer, + a2232_close, + a2232_hungup, + NULL /* a2232_getserial */ +}; + +static void *a2232_driver_ID = &a2232_driver_ID; // Some memory address WE own. + +/* Ports structs */ +static struct a2232_port a2232_ports[MAX_A2232_BOARDS*NUMLINES]; + +/* TTY driver structs */ +static struct tty_driver *a2232_driver; + +/* nr of cards completely (all ports) and correctly configured */ +static int nr_a2232; + +/* zorro_dev structs for the A2232's */ +static struct zorro_dev *zd_a2232[MAX_A2232_BOARDS]; +/***************************** End of Global variables **************/ + +/* Helper functions */ + +static inline volatile struct a2232memory *a2232mem(unsigned int board) +{ + return (volatile struct a2232memory *)ZTWO_VADDR(zd_a2232[board]->resource.start); +} + +static inline volatile struct a2232status *a2232stat(unsigned int board, + unsigned int portonboard) +{ + volatile struct a2232memory *mem = a2232mem(board); + return &(mem->Status[portonboard]); +} + +static inline void a2232_receive_char(struct a2232_port *port, int ch, int err) +{ +/* Mostly stolen from other drivers. + Maybe one could implement a more efficient version by not only + transferring one character at a time. +*/ + struct tty_struct *tty = port->gs.port.tty; + +#if 0 + switch(err) { + case TTY_BREAK: + break; + case TTY_PARITY: + break; + case TTY_OVERRUN: + break; + case TTY_FRAME: + break; + } +#endif + + tty_insert_flip_char(tty, ch, err); + tty_flip_buffer_push(tty); +} + +/***************************** Functions ****************************/ +/*** BEGIN OF REAL_DRIVER FUNCTIONS ***/ + +static void a2232_disable_tx_interrupts(void *ptr) +{ + struct a2232_port *port; + volatile struct a2232status *stat; + unsigned long flags; + + port = ptr; + stat = a2232stat(port->which_a2232, port->which_port_on_a2232); + stat->OutDisable = -1; + + /* Does this here really have to be? */ + local_irq_save(flags); + port->gs.port.flags &= ~GS_TX_INTEN; + local_irq_restore(flags); +} + +static void a2232_enable_tx_interrupts(void *ptr) +{ + struct a2232_port *port; + volatile struct a2232status *stat; + unsigned long flags; + + port = ptr; + stat = a2232stat(port->which_a2232, port->which_port_on_a2232); + stat->OutDisable = 0; + + /* Does this here really have to be? */ + local_irq_save(flags); + port->gs.port.flags |= GS_TX_INTEN; + local_irq_restore(flags); +} + +static void a2232_disable_rx_interrupts(void *ptr) +{ + struct a2232_port *port; + port = ptr; + port->disable_rx = -1; +} + +static void a2232_enable_rx_interrupts(void *ptr) +{ + struct a2232_port *port; + port = ptr; + port->disable_rx = 0; +} + +static int a2232_carrier_raised(struct tty_port *port) +{ + struct a2232_port *ap = container_of(port, struct a2232_port, gs.port); + return ap->cd_status; +} + +static void a2232_shutdown_port(void *ptr) +{ + struct a2232_port *port; + volatile struct a2232status *stat; + unsigned long flags; + + port = ptr; + stat = a2232stat(port->which_a2232, port->which_port_on_a2232); + + local_irq_save(flags); + + port->gs.port.flags &= ~GS_ACTIVE; + + if (port->gs.port.tty && port->gs.port.tty->termios->c_cflag & HUPCL) { + /* Set DTR and RTS to Low, flush output. + The NetBSD driver "msc.c" does it this way. */ + stat->Command = ( (stat->Command & ~A2232CMD_CMask) | + A2232CMD_Close ); + stat->OutFlush = -1; + stat->Setup = -1; + } + + local_irq_restore(flags); + + /* After analyzing control flow, I think a2232_shutdown_port + is actually the last call from the system when at application + level someone issues a "echo Hello >>/dev/ttyY0". + Therefore I think the MOD_DEC_USE_COUNT should be here and + not in "a2232_close()". See the comment in "sx.c", too. + If you run into problems, compile this driver into the + kernel instead of compiling it as a module. */ +} + +static int a2232_set_real_termios(void *ptr) +{ + unsigned int cflag, baud, chsize, stopb, parity, softflow; + int rate; + int a2232_param, a2232_cmd; + unsigned long flags; + unsigned int i; + struct a2232_port *port = ptr; + volatile struct a2232status *status; + volatile struct a2232memory *mem; + + if (!port->gs.port.tty || !port->gs.port.tty->termios) return 0; + + status = a2232stat(port->which_a2232, port->which_port_on_a2232); + mem = a2232mem(port->which_a2232); + + a2232_param = a2232_cmd = 0; + + // get baud rate + baud = port->gs.baud; + if (baud == 0) { + /* speed == 0 -> drop DTR, do nothing else */ + local_irq_save(flags); + // Clear DTR (and RTS... mhhh). + status->Command = ( (status->Command & ~A2232CMD_CMask) | + A2232CMD_Close ); + status->OutFlush = -1; + status->Setup = -1; + + local_irq_restore(flags); + return 0; + } + + rate = A2232_BAUD_TABLE_NOAVAIL; + for (i=0; i < A2232_BAUD_TABLE_NUM_RATES * 3; i += 3){ + if (a2232_baud_table[i] == baud){ + if (mem->Common.Crystal == A2232_TURBO) rate = a2232_baud_table[i+2]; + else rate = a2232_baud_table[i+1]; + } + } + if (rate == A2232_BAUD_TABLE_NOAVAIL){ + printk("a2232: Board %d Port %d unsupported baud rate: %d baud. Using another.\n",port->which_a2232,port->which_port_on_a2232,baud); + // This is useful for both (turbo or normal) Crystal versions. + rate = A2232PARAM_B9600; + } + a2232_param |= rate; + + cflag = port->gs.port.tty->termios->c_cflag; + + // get character size + chsize = cflag & CSIZE; + switch (chsize){ + case CS8: a2232_param |= A2232PARAM_8Bit; break; + case CS7: a2232_param |= A2232PARAM_7Bit; break; + case CS6: a2232_param |= A2232PARAM_6Bit; break; + case CS5: a2232_param |= A2232PARAM_5Bit; break; + default: printk("a2232: Board %d Port %d unsupported character size: %d. Using 8 data bits.\n", + port->which_a2232,port->which_port_on_a2232,chsize); + a2232_param |= A2232PARAM_8Bit; break; + } + + // get number of stop bits + stopb = cflag & CSTOPB; + if (stopb){ // two stop bits instead of one + printk("a2232: Board %d Port %d 2 stop bits unsupported. Using 1 stop bit.\n", + port->which_a2232,port->which_port_on_a2232); + } + + // Warn if RTS/CTS not wanted + if (!(cflag & CRTSCTS)){ +#ifndef A2232_SUPPRESS_RTSCTS_WARNING + printk("a2232: Board %d Port %d cannot switch off firmware-implemented RTS/CTS hardware flow control.\n", + port->which_a2232,port->which_port_on_a2232); +#endif + } + + /* I think this is correct. + However, IXOFF means _input_ flow control and I wonder + if one should care about IXON _output_ flow control, + too. If this makes problems, one should turn the A2232 + firmware XON/XOFF "SoftFlow" flow control off and use + the conventional way of inserting START/STOP characters + by hand in throttle()/unthrottle(). + */ + softflow = !!( port->gs.port.tty->termios->c_iflag & IXOFF ); + + // get Parity (Enabled/Disabled? If Enabled, Odd or Even?) + parity = cflag & (PARENB | PARODD); + if (parity & PARENB){ + if (parity & PARODD){ + a2232_cmd |= A2232CMD_OddParity; + } + else{ + a2232_cmd |= A2232CMD_EvenParity; + } + } + else a2232_cmd |= A2232CMD_NoParity; + + + /* Hmm. Maybe an own a2232_port structure + member would be cleaner? */ + if (cflag & CLOCAL) + port->gs.port.flags &= ~ASYNC_CHECK_CD; + else + port->gs.port.flags |= ASYNC_CHECK_CD; + + + /* Now we have all parameters and can go to set them: */ + local_irq_save(flags); + + status->Param = a2232_param | A2232PARAM_RcvBaud; + status->Command = a2232_cmd | A2232CMD_Open | A2232CMD_Enable; + status->SoftFlow = softflow; + status->OutDisable = 0; + status->Setup = -1; + + local_irq_restore(flags); + return 0; +} + +static int a2232_chars_in_buffer(void *ptr) +{ + struct a2232_port *port; + volatile struct a2232status *status; + unsigned char ret; /* we need modulo-256 arithmetics */ + port = ptr; + status = a2232stat(port->which_a2232, port->which_port_on_a2232); +#if A2232_IOBUFLEN != 256 +#error "Re-Implement a2232_chars_in_buffer()!" +#endif + ret = (status->OutHead - status->OutTail); + return ret; +} + +static void a2232_close(void *ptr) +{ + a2232_disable_tx_interrupts(ptr); + a2232_disable_rx_interrupts(ptr); + /* see the comment in a2232_shutdown_port above. */ +} + +static void a2232_hungup(void *ptr) +{ + a2232_close(ptr); +} +/*** END OF REAL_DRIVER FUNCTIONS ***/ + +/*** BEGIN FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/ +static int a2232_ioctl( struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + return -ENOIOCTLCMD; +} + +static void a2232_throttle(struct tty_struct *tty) +{ +/* Throttle: System cannot take another chars: Drop RTS or + send the STOP char or whatever. + The A2232 firmware does RTS/CTS anyway, and XON/XOFF + if switched on. So the only thing we can do at this + layer here is not taking any characters out of the + A2232 buffer any more. */ + struct a2232_port *port = tty->driver_data; + port->throttle_input = -1; +} + +static void a2232_unthrottle(struct tty_struct *tty) +{ +/* Unthrottle: dual to "throttle()" above. */ + struct a2232_port *port = tty->driver_data; + port->throttle_input = 0; +} + +static int a2232_open(struct tty_struct * tty, struct file * filp) +{ +/* More or less stolen from other drivers. */ + int line; + int retval; + struct a2232_port *port; + + line = tty->index; + port = &a2232_ports[line]; + + tty->driver_data = port; + port->gs.port.tty = tty; + port->gs.port.count++; + retval = gs_init_port(&port->gs); + if (retval) { + port->gs.port.count--; + return retval; + } + port->gs.port.flags |= GS_ACTIVE; + retval = gs_block_til_ready(port, filp); + + if (retval) { + port->gs.port.count--; + return retval; + } + + a2232_enable_rx_interrupts(port); + + return 0; +} +/*** END OF FUNCTIONS EXPECTED BY TTY DRIVER STRUCTS ***/ + +static irqreturn_t a2232_vbl_inter(int irq, void *data) +{ +#if A2232_IOBUFLEN != 256 +#error "Re-Implement a2232_vbl_inter()!" +#endif + +struct a2232_port *port; +volatile struct a2232memory *mem; +volatile struct a2232status *status; +unsigned char newhead; +unsigned char bufpos; /* Must be unsigned char. We need the modulo-256 arithmetics */ +unsigned char ncd, ocd, ccd; /* names consistent with the NetBSD driver */ +volatile u_char *ibuf, *cbuf, *obuf; +int ch, err, n, p; + for (n = 0; n < nr_a2232; n++){ /* for every completely initialized A2232 board */ + mem = a2232mem(n); + for (p = 0; p < NUMLINES; p++){ /* for every port on this board */ + err = 0; + port = &a2232_ports[n*NUMLINES+p]; + if ( port->gs.port.flags & GS_ACTIVE ){ /* if the port is used */ + + status = a2232stat(n,p); + + if (!port->disable_rx && !port->throttle_input){ /* If input is not disabled */ + newhead = status->InHead; /* 65EC02 write pointer */ + bufpos = status->InTail; + + /* check for input for this port */ + if (newhead != bufpos) { + /* buffer for input chars/events */ + ibuf = mem->InBuf[p]; + + /* data types of bytes in ibuf */ + cbuf = mem->InCtl[p]; + + /* do for all chars */ + while (bufpos != newhead) { + /* which type of input data? */ + switch (cbuf[bufpos]) { + /* switch on input event (CD, BREAK, etc.) */ + case A2232INCTL_EVENT: + switch (ibuf[bufpos++]) { + case A2232EVENT_Break: + /* TODO: Handle BREAK signal */ + break; + /* A2232EVENT_CarrierOn and A2232EVENT_CarrierOff are + handled in a separate queue and should not occur here. */ + case A2232EVENT_Sync: + printk("A2232: 65EC02 software sent SYNC event, don't know what to do. Ignoring."); + break; + default: + printk("A2232: 65EC02 software broken, unknown event type %d occurred.\n",ibuf[bufpos-1]); + } /* event type switch */ + break; + case A2232INCTL_CHAR: + /* Receive incoming char */ + a2232_receive_char(port, ibuf[bufpos], err); + bufpos++; + break; + default: + printk("A2232: 65EC02 software broken, unknown data type %d occurred.\n",cbuf[bufpos]); + bufpos++; + } /* switch on input data type */ + } /* while there's something in the buffer */ + + status->InTail = bufpos; /* tell 65EC02 what we've read */ + + } /* if there was something in the buffer */ + } /* If input is not disabled */ + + /* Now check if there's something to output */ + obuf = mem->OutBuf[p]; + bufpos = status->OutHead; + while ( (port->gs.xmit_cnt > 0) && + (!port->gs.port.tty->stopped) && + (!port->gs.port.tty->hw_stopped) ){ /* While there are chars to transmit */ + if (((bufpos+1) & A2232_IOBUFLENMASK) != status->OutTail) { /* If the A2232 buffer is not full */ + ch = port->gs.xmit_buf[port->gs.xmit_tail]; /* get the next char to transmit */ + port->gs.xmit_tail = (port->gs.xmit_tail+1) & (SERIAL_XMIT_SIZE-1); /* modulo-addition for the gs.xmit_buf ring-buffer */ + obuf[bufpos++] = ch; /* put it into the A2232 buffer */ + port->gs.xmit_cnt--; + } + else{ /* If A2232 the buffer is full */ + break; /* simply stop filling it. */ + } + } + status->OutHead = bufpos; + + /* WakeUp if output buffer runs low */ + if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) { + tty_wakeup(port->gs.port.tty); + } + } // if the port is used + } // for every port on the board + + /* Now check the CD message queue */ + newhead = mem->Common.CDHead; + bufpos = mem->Common.CDTail; + if (newhead != bufpos){ /* There are CD events in queue */ + ocd = mem->Common.CDStatus; /* get old status bits */ + while (newhead != bufpos){ /* read all events */ + ncd = mem->CDBuf[bufpos++]; /* get one event */ + ccd = ncd ^ ocd; /* mask of changed lines */ + ocd = ncd; /* save new status bits */ + for(p=0; p < NUMLINES; p++){ /* for all ports */ + if (ccd & 1){ /* this one changed */ + + struct a2232_port *port = &a2232_ports[n*7+p]; + port->cd_status = !(ncd & 1); /* ncd&1 <=> CD is now off */ + + if (!(port->gs.port.flags & ASYNC_CHECK_CD)) + ; /* Don't report DCD changes */ + else if (port->cd_status) { // if DCD on: DCD went UP! + + /* Are we blocking in open?*/ + wake_up_interruptible(&port->gs.port.open_wait); + } + else { // if DCD off: DCD went DOWN! + if (port->gs.port.tty) + tty_hangup (port->gs.port.tty); + } + + } // if CD changed for this port + ccd >>= 1; + ncd >>= 1; /* Shift bits for next line */ + } // for every port + } // while CD events in queue + mem->Common.CDStatus = ocd; /* save new status */ + mem->Common.CDTail = bufpos; /* remove events */ + } // if events in CD queue + + } // for every completely initialized A2232 board + return IRQ_HANDLED; +} + +static const struct tty_port_operations a2232_port_ops = { + .carrier_raised = a2232_carrier_raised, +}; + +static void a2232_init_portstructs(void) +{ + struct a2232_port *port; + int i; + + for (i = 0; i < MAX_A2232_BOARDS*NUMLINES; i++) { + port = a2232_ports + i; + tty_port_init(&port->gs.port); + port->gs.port.ops = &a2232_port_ops; + port->which_a2232 = i/NUMLINES; + port->which_port_on_a2232 = i%NUMLINES; + port->disable_rx = port->throttle_input = port->cd_status = 0; + port->gs.magic = A2232_MAGIC; + port->gs.close_delay = HZ/2; + port->gs.closing_wait = 30 * HZ; + port->gs.rd = &a2232_real_driver; + } +} + +static const struct tty_operations a2232_ops = { + .open = a2232_open, + .close = gs_close, + .write = gs_write, + .put_char = gs_put_char, + .flush_chars = gs_flush_chars, + .write_room = gs_write_room, + .chars_in_buffer = gs_chars_in_buffer, + .flush_buffer = gs_flush_buffer, + .ioctl = a2232_ioctl, + .throttle = a2232_throttle, + .unthrottle = a2232_unthrottle, + .set_termios = gs_set_termios, + .stop = gs_stop, + .start = gs_start, + .hangup = gs_hangup, +}; + +static int a2232_init_drivers(void) +{ + int error; + + a2232_driver = alloc_tty_driver(NUMLINES * nr_a2232); + if (!a2232_driver) + return -ENOMEM; + a2232_driver->owner = THIS_MODULE; + a2232_driver->driver_name = "commodore_a2232"; + a2232_driver->name = "ttyY"; + a2232_driver->major = A2232_NORMAL_MAJOR; + a2232_driver->type = TTY_DRIVER_TYPE_SERIAL; + a2232_driver->subtype = SERIAL_TYPE_NORMAL; + a2232_driver->init_termios = tty_std_termios; + a2232_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + a2232_driver->init_termios.c_ispeed = 9600; + a2232_driver->init_termios.c_ospeed = 9600; + a2232_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(a2232_driver, &a2232_ops); + if ((error = tty_register_driver(a2232_driver))) { + printk(KERN_ERR "A2232: Couldn't register A2232 driver, error = %d\n", + error); + put_tty_driver(a2232_driver); + return 1; + } + return 0; +} + +static int __init a2232board_init(void) +{ + struct zorro_dev *z; + + unsigned int boardaddr; + int bcount; + short start; + u_char *from; + volatile u_char *to; + volatile struct a2232memory *mem; + int error, i; + +#ifdef CONFIG_SMP + return -ENODEV; /* This driver is not SMP aware. Is there an SMP ZorroII-bus-machine? */ +#endif + + if (!MACH_IS_AMIGA){ + return -ENODEV; + } + + printk("Commodore A2232 driver initializing.\n"); /* Say that we're alive. */ + + z = NULL; + nr_a2232 = 0; + while ( (z = zorro_find_device(ZORRO_WILDCARD, z)) ){ + if ( (z->id != ZORRO_PROD_CBM_A2232_PROTOTYPE) && + (z->id != ZORRO_PROD_CBM_A2232) ){ + continue; // The board found was no A2232 + } + if (!zorro_request_device(z,"A2232 driver")) + continue; + + printk("Commodore A2232 found (#%d).\n",nr_a2232); + + zd_a2232[nr_a2232] = z; + + boardaddr = ZTWO_VADDR( z->resource.start ); + printk("Board is located at address 0x%x, size is 0x%x.\n", boardaddr, (unsigned int) ((z->resource.end+1) - (z->resource.start))); + + mem = (volatile struct a2232memory *) boardaddr; + + (void) mem->Enable6502Reset; /* copy the code across to the board */ + to = (u_char *)mem; from = a2232_65EC02code; bcount = sizeof(a2232_65EC02code) - 2; + start = *(short *)from; + from += sizeof(start); + to += start; + while(bcount--) *to++ = *from++; + printk("65EC02 software uploaded to the A2232 memory.\n"); + + mem->Common.Crystal = A2232_UNKNOWN; /* use automatic speed check */ + + /* start 6502 running */ + (void) mem->ResetBoard; + printk("A2232's 65EC02 CPU up and running.\n"); + + /* wait until speed detector has finished */ + for (bcount = 0; bcount < 2000; bcount++) { + udelay(1000); + if (mem->Common.Crystal) + break; + } + printk((mem->Common.Crystal?"A2232 oscillator crystal detected by 65EC02 software: ":"65EC02 software could not determine A2232 oscillator crystal: ")); + switch (mem->Common.Crystal){ + case A2232_UNKNOWN: + printk("Unknown crystal.\n"); + break; + case A2232_NORMAL: + printk ("Normal crystal.\n"); + break; + case A2232_TURBO: + printk ("Turbo crystal.\n"); + break; + default: + printk ("0x%x. Huh?\n",mem->Common.Crystal); + } + + nr_a2232++; + + } + + printk("Total: %d A2232 boards initialized.\n", nr_a2232); /* Some status report if no card was found */ + + a2232_init_portstructs(); + + /* + a2232_init_drivers also registers the drivers. Must be here because all boards + have to be detected first. + */ + if (a2232_init_drivers()) return -ENODEV; // maybe we should use a different -Exxx? + + error = request_irq(IRQ_AMIGA_VERTB, a2232_vbl_inter, 0, + "A2232 serial VBL", a2232_driver_ID); + if (error) { + for (i = 0; i < nr_a2232; i++) + zorro_release_device(zd_a2232[i]); + tty_unregister_driver(a2232_driver); + put_tty_driver(a2232_driver); + } + return error; +} + +static void __exit a2232board_exit(void) +{ + int i; + + for (i = 0; i < nr_a2232; i++) { + zorro_release_device(zd_a2232[i]); + } + + tty_unregister_driver(a2232_driver); + put_tty_driver(a2232_driver); + free_irq(IRQ_AMIGA_VERTB, a2232_driver_ID); +} + +module_init(a2232board_init); +module_exit(a2232board_exit); + +MODULE_AUTHOR("Enver Haase"); +MODULE_DESCRIPTION("Amiga A2232 multi-serial board driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/generic_serial/ser_a2232.h b/drivers/staging/generic_serial/ser_a2232.h new file mode 100644 index 000000000000..bc09eb9e118b --- /dev/null +++ b/drivers/staging/generic_serial/ser_a2232.h @@ -0,0 +1,202 @@ +/* drivers/char/ser_a2232.h */ + +/* $Id: ser_a2232.h,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */ + +/* Linux serial driver for the Amiga A2232 board */ + +/* This driver is MAINTAINED. Before applying any changes, please contact + * the author. + */ + +/* Copyright (c) 2000-2001 Enver Haase + * alias The A2232 driver project + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#ifndef _SER_A2232_H_ +#define _SER_A2232_H_ + +/* + How many boards are to be supported at maximum; + "up to five A2232 Multiport Serial Cards may be installed in a + single Amiga 2000" states the A2232 User's Guide. If you have + more slots available, you might want to change the value below. +*/ +#define MAX_A2232_BOARDS 5 + +#ifndef A2232_NORMAL_MAJOR +/* This allows overriding on the compiler commandline, or in a "major.h" + include or something like that */ +#define A2232_NORMAL_MAJOR 224 /* /dev/ttyY* */ +#define A2232_CALLOUT_MAJOR 225 /* /dev/cuy* */ +#endif + +/* Some magic is always good - Who knows :) */ +#define A2232_MAGIC 0x000a2232 + +/* A2232 port structure to keep track of the + status of every single line used */ +struct a2232_port{ + struct gs_port gs; + unsigned int which_a2232; + unsigned int which_port_on_a2232; + short disable_rx; + short throttle_input; + short cd_status; +}; + +#define NUMLINES 7 /* number of lines per board */ +#define A2232_IOBUFLEN 256 /* number of bytes per buffer */ +#define A2232_IOBUFLENMASK 0xff /* mask for maximum number of bytes */ + + +#define A2232_UNKNOWN 0 /* crystal not known */ +#define A2232_NORMAL 1 /* normal A2232 (1.8432 MHz oscillator) */ +#define A2232_TURBO 2 /* turbo A2232 (3.6864 MHz oscillator) */ + + +struct a2232common { + char Crystal; /* normal (1) or turbo (2) board? */ + u_char Pad_a; + u_char TimerH; /* timer value after speed check */ + u_char TimerL; + u_char CDHead; /* head pointer for CD message queue */ + u_char CDTail; /* tail pointer for CD message queue */ + u_char CDStatus; + u_char Pad_b; +}; + +struct a2232status { + u_char InHead; /* input queue head */ + u_char InTail; /* input queue tail */ + u_char OutDisable; /* disables output */ + u_char OutHead; /* output queue head */ + u_char OutTail; /* output queue tail */ + u_char OutCtrl; /* soft flow control character to send */ + u_char OutFlush; /* flushes output buffer */ + u_char Setup; /* causes reconfiguration */ + u_char Param; /* parameter byte - see A2232PARAM */ + u_char Command; /* command byte - see A2232CMD */ + u_char SoftFlow; /* enables xon/xoff flow control */ + /* private 65EC02 fields: */ + u_char XonOff; /* stores XON/XOFF enable/disable */ +}; + +#define A2232_MEMPAD1 \ + (0x0200 - NUMLINES * sizeof(struct a2232status) - \ + sizeof(struct a2232common)) +#define A2232_MEMPAD2 (0x2000 - NUMLINES * A2232_IOBUFLEN - A2232_IOBUFLEN) + +struct a2232memory { + struct a2232status Status[NUMLINES]; /* 0x0000-0x006f status areas */ + struct a2232common Common; /* 0x0070-0x0077 common flags */ + u_char Dummy1[A2232_MEMPAD1]; /* 0x00XX-0x01ff */ + u_char OutBuf[NUMLINES][A2232_IOBUFLEN];/* 0x0200-0x08ff output bufs */ + u_char InBuf[NUMLINES][A2232_IOBUFLEN]; /* 0x0900-0x0fff input bufs */ + u_char InCtl[NUMLINES][A2232_IOBUFLEN]; /* 0x1000-0x16ff control data */ + u_char CDBuf[A2232_IOBUFLEN]; /* 0x1700-0x17ff CD event buffer */ + u_char Dummy2[A2232_MEMPAD2]; /* 0x1800-0x2fff */ + u_char Code[0x1000]; /* 0x3000-0x3fff code area */ + u_short InterruptAck; /* 0x4000 intr ack */ + u_char Dummy3[0x3ffe]; /* 0x4002-0x7fff */ + u_short Enable6502Reset; /* 0x8000 Stop board, */ + /* 6502 RESET line held low */ + u_char Dummy4[0x3ffe]; /* 0x8002-0xbfff */ + u_short ResetBoard; /* 0xc000 reset board & run, */ + /* 6502 RESET line held high */ +}; + +#undef A2232_MEMPAD1 +#undef A2232_MEMPAD2 + +#define A2232INCTL_CHAR 0 /* corresponding byte in InBuf is a character */ +#define A2232INCTL_EVENT 1 /* corresponding byte in InBuf is an event */ + +#define A2232EVENT_Break 1 /* break set */ +#define A2232EVENT_CarrierOn 2 /* carrier raised */ +#define A2232EVENT_CarrierOff 3 /* carrier dropped */ +#define A2232EVENT_Sync 4 /* don't know, defined in 2232.ax */ + +#define A2232CMD_Enable 0x1 /* enable/DTR bit */ +#define A2232CMD_Close 0x2 /* close the device */ +#define A2232CMD_Open 0xb /* open the device */ +#define A2232CMD_CMask 0xf /* command mask */ +#define A2232CMD_RTSOff 0x0 /* turn off RTS */ +#define A2232CMD_RTSOn 0x8 /* turn on RTS */ +#define A2232CMD_Break 0xd /* transmit a break */ +#define A2232CMD_RTSMask 0xc /* mask for RTS stuff */ +#define A2232CMD_NoParity 0x00 /* don't use parity */ +#define A2232CMD_OddParity 0x20 /* odd parity */ +#define A2232CMD_EvenParity 0x60 /* even parity */ +#define A2232CMD_ParityMask 0xe0 /* parity mask */ + +#define A2232PARAM_B115200 0x0 /* baud rates */ +#define A2232PARAM_B50 0x1 +#define A2232PARAM_B75 0x2 +#define A2232PARAM_B110 0x3 +#define A2232PARAM_B134 0x4 +#define A2232PARAM_B150 0x5 +#define A2232PARAM_B300 0x6 +#define A2232PARAM_B600 0x7 +#define A2232PARAM_B1200 0x8 +#define A2232PARAM_B1800 0x9 +#define A2232PARAM_B2400 0xa +#define A2232PARAM_B3600 0xb +#define A2232PARAM_B4800 0xc +#define A2232PARAM_B7200 0xd +#define A2232PARAM_B9600 0xe +#define A2232PARAM_B19200 0xf +#define A2232PARAM_BaudMask 0xf /* baud rate mask */ +#define A2232PARAM_RcvBaud 0x10 /* enable receive baud rate */ +#define A2232PARAM_8Bit 0x00 /* numbers of bits */ +#define A2232PARAM_7Bit 0x20 +#define A2232PARAM_6Bit 0x40 +#define A2232PARAM_5Bit 0x60 +#define A2232PARAM_BitMask 0x60 /* numbers of bits mask */ + + +/* Standard speeds tables, -1 means unavailable, -2 means 0 baud: switch off line */ +#define A2232_BAUD_TABLE_NOAVAIL -1 +#define A2232_BAUD_TABLE_NUM_RATES (18) +static int a2232_baud_table[A2232_BAUD_TABLE_NUM_RATES*3] = { + //Baud //Normal //Turbo + 50, A2232PARAM_B50, A2232_BAUD_TABLE_NOAVAIL, + 75, A2232PARAM_B75, A2232_BAUD_TABLE_NOAVAIL, + 110, A2232PARAM_B110, A2232_BAUD_TABLE_NOAVAIL, + 134, A2232PARAM_B134, A2232_BAUD_TABLE_NOAVAIL, + 150, A2232PARAM_B150, A2232PARAM_B75, + 200, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL, + 300, A2232PARAM_B300, A2232PARAM_B150, + 600, A2232PARAM_B600, A2232PARAM_B300, + 1200, A2232PARAM_B1200, A2232PARAM_B600, + 1800, A2232PARAM_B1800, A2232_BAUD_TABLE_NOAVAIL, + 2400, A2232PARAM_B2400, A2232PARAM_B1200, + 4800, A2232PARAM_B4800, A2232PARAM_B2400, + 9600, A2232PARAM_B9600, A2232PARAM_B4800, + 19200, A2232PARAM_B19200, A2232PARAM_B9600, + 38400, A2232_BAUD_TABLE_NOAVAIL, A2232PARAM_B19200, + 57600, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL, +#ifdef A2232_SPEEDHACK + 115200, A2232PARAM_B115200, A2232_BAUD_TABLE_NOAVAIL, + 230400, A2232_BAUD_TABLE_NOAVAIL, A2232PARAM_B115200 +#else + 115200, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL, + 230400, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL +#endif +}; +#endif diff --git a/drivers/staging/generic_serial/ser_a2232fw.ax b/drivers/staging/generic_serial/ser_a2232fw.ax new file mode 100644 index 000000000000..736438032768 --- /dev/null +++ b/drivers/staging/generic_serial/ser_a2232fw.ax @@ -0,0 +1,529 @@ +;.lib "axm" +; +;begin +;title "A2232 serial board driver" +; +;set modules "2232" +;set executable "2232.bin" +; +;;;;set nolink +; +;set temporary directory "t:" +; +;set assembly options "-m6502 -l60:t:list" +;set link options "bin"; loadadr" +;;;bin2c 2232.bin msc6502.h msc6502code +;end +; +; +; ### Commodore A2232 serial board driver for NetBSD by JM v1.3 ### +; +; - Created 950501 by JM - +; +; +; Serial board driver software. +; +; +% Copyright (c) 1995 Jukka Marin . +% All rights reserved. +% +% Redistribution and use in source and binary forms, with or without +% modification, are permitted provided that the following conditions +% are met: +% 1. Redistributions of source code must retain the above copyright +% notice, and the entire permission notice in its entirety, +% including the disclaimer of warranties. +% 2. Redistributions in binary form must reproduce the above copyright +% notice, this list of conditions and the following disclaimer in the +% documentation and/or other materials provided with the distribution. +% 3. The name of the author may not be used to endorse or promote +% products derived from this software without specific prior +% written permission. +% +% ALTERNATIVELY, this product may be distributed under the terms of +% the GNU General Public License, in which case the provisions of the +% GPL are required INSTEAD OF the above restrictions. (This clause is +% necessary due to a potential bad interaction between the GPL and +% the restrictions contained in a BSD-style copyright.) +% +% THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED +% WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +% OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +% DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, +% INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +% (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +% SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +% HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +% STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED +% OF THE POSSIBILITY OF SUCH DAMAGE. +; +; +; Bugs: +; +; - Can't send a break yet +; +; +; +; Edited: +; +; - 950501 by JM -> v0.1 - Created this file. +; - 951029 by JM -> v1.3 - Carrier Detect events now queued in a separate +; queue. +; +; + + +CODE equ $3800 ; start address for program code + + +CTL_CHAR equ $00 ; byte in ibuf is a character +CTL_EVENT equ $01 ; byte in ibuf is an event + +EVENT_BREAK equ $01 +EVENT_CDON equ $02 +EVENT_CDOFF equ $03 +EVENT_SYNC equ $04 + +XON equ $11 +XOFF equ $13 + + +VARBASE macro *starting_address ; was VARINIT +_varbase set \1 + endm + +VARDEF macro *name space_needs +\1 equ _varbase +_varbase set _varbase+\2 + endm + + +stz macro * address + db $64,\1 + endm + +stzax macro * address + db $9e,<\1,>\1 + endm + + +biti macro * immediate value + db $89,\1 + endm + +smb0 macro * address + db $87,\1 + endm +smb1 macro * address + db $97,\1 + endm +smb2 macro * address + db $a7,\1 + endm +smb3 macro * address + db $b7,\1 + endm +smb4 macro * address + db $c7,\1 + endm +smb5 macro * address + db $d7,\1 + endm +smb6 macro * address + db $e7,\1 + endm +smb7 macro * address + db $f7,\1 + endm + + + +;-----------------------------------------------------------------------; +; ; +; stuff common for all ports, non-critical (run once / loop) ; +; ; +DO_SLOW macro * port_number ; + .local ; ; + lda CIA+C_PA ; check all CD inputs ; + cmp CommonCDo ; changed from previous accptd? ; + beq =over ; nope, do nothing else here ; + ; ; + cmp CommonCDb ; bouncing? ; + beq =nobounce ; nope -> ; + ; ; + sta CommonCDb ; save current state ; + lda #64 ; reinitialize counter ; + sta CommonCDc ; ; + jmp =over ; skip CD save ; + ; ; +=nobounce dec CommonCDc ; no, decrement bounce counter ; + bpl =over ; not done yet, so skip CD save ; + ; ; +=saveCD ldx CDHead ; get write index ; + sta cdbuf,x ; save status in buffer ; + inx ; ; + cpx CDTail ; buffer full? ; + .if ne ; no: preserve status: ; + stx CDHead ; update index in RAM ; + sta CommonCDo ; save state for the next check ; + .end ; ; +=over .end local ; + endm ; + ; +;-----------------------------------------------------------------------; + + +; port specific stuff (no data transfer) + +DO_PORT macro * port_number + .local ; ; + lda SetUp\1 ; reconfiguration request? ; + .if ne ; yes: ; + lda SoftFlow\1 ; get XON/XOFF flag ; + sta XonOff\1 ; save it ; + lda Param\1 ; get parameter ; + ora #%00010000 ; use baud generator for Rx ; + sta ACIA\1+A_CTRL ; store in control register ; + stz OutDisable\1 ; enable transmit output ; + stz SetUp\1 ; no reconfiguration no more ; + .end ; ; + ; ; + lda InHead\1 ; get write index ; + sbc InTail\1 ; buffer full soon? ; + cmp #200 ; 200 chars or more in buffer? ; + lda Command\1 ; get Command reg value ; + and #%11110011 ; turn RTS OFF by default ; + .if cc ; still room in buffer: ; + ora #%00001000 ; turn RTS ON ; + .end ; ; + sta ACIA\1+A_CMD ; set/clear RTS ; + ; ; + lda OutFlush\1 ; request to flush output buffer; + .if ne ; yessh! ; + lda OutHead\1 ; get head ; + sta OutTail\1 ; save as tail ; + stz OutDisable\1 ; enable transmit output ; + stz OutFlush\1 ; clear request ; + .end + .end local + endm + + +DO_DATA macro * port number + .local + lda ACIA\1+A_SR ; read ACIA status register ; + biti [1<<3] ; something received? ; + .if ne ; yes: ; + biti [1<<1] ; framing error? ; + .if ne ; yes: ; + lda ACIA\1+A_DATA ; read received character ; + bne =SEND ; not break -> ignore it ; + ldx InHead\1 ; get write pointer ; + lda #CTL_EVENT ; get type of byte ; + sta ictl\1,x ; save it in InCtl buffer ; + lda #EVENT_BREAK ; event code ; + sta ibuf\1,x ; save it as well ; + inx ; ; + cpx InTail\1 ; still room in buffer? ; + .if ne ; absolutely: ; + stx InHead\1 ; update index in memory ; + .end ; ; + jmp =SEND ; go check if anything to send ; + .end ; ; + ; normal char received: ; + ldx InHead\1 ; get write index ; + lda ACIA\1+A_DATA ; read received character ; + sta ibuf\1,x ; save char in buffer ; + stzax ictl\1 ; set type to CTL_CHAR ; + inx ; ; + cpx InTail\1 ; buffer full? ; + .if ne ; no: preserve character: ; + stx InHead\1 ; update index in RAM ; + .end ; ; + and #$7f ; mask off parity if any ; + cmp #XOFF ; XOFF from remote host? ; + .if eq ; yes: ; + lda XonOff\1 ; if XON/XOFF handshaking.. ; + sta OutDisable\1 ; ..disable transmitter ; + .end ; ; + .end ; ; + ; ; + ; BUFFER FULL CHECK WAS HERE ; + ; ; +=SEND lda ACIA\1+A_SR ; transmit register empty? ; + and #[1<<4] ; ; + .if ne ; yes: ; + ldx OutCtrl\1 ; sending out XON/XOFF? ; + .if ne ; yes: ; + lda CIA+C_PB ; check CTS signal ; + and #[1<<\1] ; (for this port only) ; + bne =DONE ; not allowed to send -> done ; + stx ACIA\1+A_DATA ; transmit control char ; + stz OutCtrl\1 ; clear flag ; + jmp =DONE ; and we're done ; + .end ; ; + ; ; + ldx OutTail\1 ; anything to transmit? ; + cpx OutHead\1 ; ; + .if ne ; yes: ; + lda OutDisable\1 ; allowed to transmit? ; + .if eq ; yes: ; + lda CIA+C_PB ; check CTS signal ; + and #[1<<\1] ; (for this port only) ; + bne =DONE ; not allowed to send -> done ; + lda obuf\1,x ; get a char from buffer ; + sta ACIA\1+A_DATA ; send it away ; + inc OutTail\1 ; update read index ; + .end ; ; + .end ; ; + .end ; ; +=DONE .end local + endm + + + +PORTVAR macro * port number + VARDEF InHead\1 1 + VARDEF InTail\1 1 + VARDEF OutDisable\1 1 + VARDEF OutHead\1 1 + VARDEF OutTail\1 1 + VARDEF OutCtrl\1 1 + VARDEF OutFlush\1 1 + VARDEF SetUp\1 1 + VARDEF Param\1 1 + VARDEF Command\1 1 + VARDEF SoftFlow\1 1 + ; private: + VARDEF XonOff\1 1 + endm + + + VARBASE 0 ; start variables at address $0000 + PORTVAR 0 ; define variables for port 0 + PORTVAR 1 ; define variables for port 1 + PORTVAR 2 ; define variables for port 2 + PORTVAR 3 ; define variables for port 3 + PORTVAR 4 ; define variables for port 4 + PORTVAR 5 ; define variables for port 5 + PORTVAR 6 ; define variables for port 6 + + + + VARDEF Crystal 1 ; 0 = unknown, 1 = normal, 2 = turbo + VARDEF Pad_a 1 + VARDEF TimerH 1 + VARDEF TimerL 1 + VARDEF CDHead 1 + VARDEF CDTail 1 + VARDEF CDStatus 1 + VARDEF Pad_b 1 + + VARDEF CommonCDo 1 ; for carrier detect optimization + VARDEF CommonCDc 1 ; for carrier detect debouncing + VARDEF CommonCDb 1 ; for carrier detect debouncing + + + VARBASE $0200 + VARDEF obuf0 256 ; output data (characters only) + VARDEF obuf1 256 + VARDEF obuf2 256 + VARDEF obuf3 256 + VARDEF obuf4 256 + VARDEF obuf5 256 + VARDEF obuf6 256 + + VARDEF ibuf0 256 ; input data (characters, events etc - see ictl) + VARDEF ibuf1 256 + VARDEF ibuf2 256 + VARDEF ibuf3 256 + VARDEF ibuf4 256 + VARDEF ibuf5 256 + VARDEF ibuf6 256 + + VARDEF ictl0 256 ; input control information (type of data in ibuf) + VARDEF ictl1 256 + VARDEF ictl2 256 + VARDEF ictl3 256 + VARDEF ictl4 256 + VARDEF ictl5 256 + VARDEF ictl6 256 + + VARDEF cdbuf 256 ; CD event queue + + +ACIA0 equ $4400 +ACIA1 equ $4c00 +ACIA2 equ $5400 +ACIA3 equ $5c00 +ACIA4 equ $6400 +ACIA5 equ $6c00 +ACIA6 equ $7400 + +A_DATA equ $00 +A_SR equ $02 +A_CMD equ $04 +A_CTRL equ $06 +; 00 write transmit data read received data +; 02 reset ACIA read status register +; 04 write command register read command register +; 06 write control register read control register + +CIA equ $7c00 ; 8520 CIA +C_PA equ $00 ; port A data register +C_PB equ $02 ; port B data register +C_DDRA equ $04 ; data direction register for port A +C_DDRB equ $06 ; data direction register for port B +C_TAL equ $08 ; timer A +C_TAH equ $0a +C_TBL equ $0c ; timer B +C_TBH equ $0e +C_TODL equ $10 ; TOD LSB +C_TODM equ $12 ; TOD middle byte +C_TODH equ $14 ; TOD MSB +C_DATA equ $18 ; serial data register +C_INTCTRL equ $1a ; interrupt control register +C_CTRLA equ $1c ; control register A +C_CTRLB equ $1e ; control register B + + + + + + section main,code,CODE-2 + + db >CODE,. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, and the entire permission notice in its entirety, + * including the disclaimer of warranties. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * ALTERNATIVELY, this product may be distributed under the terms of + * the GNU Public License, in which case the provisions of the GPL are + * required INSTEAD OF the above restrictions. (This clause is + * necessary due to a potential bad interaction between the GPL and + * the restrictions contained in a BSD-style copyright.) + * + * THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* This is the 65EC02 code by Jukka Marin that is executed by + the A2232's 65EC02 processor (base address: 0x3800) + Source file: ser_a2232fw.ax + Version: 1.3 (951029) + Known Bugs: Cannot send a break yet +*/ +static unsigned char a2232_65EC02code[] = { + 0x38, 0x00, 0xA2, 0xFF, 0x9A, 0xD8, 0xA2, 0x00, + 0xA9, 0x00, 0xA0, 0x54, 0x95, 0x00, 0xE8, 0x88, + 0xD0, 0xFA, 0x64, 0x5C, 0x64, 0x5E, 0x64, 0x58, + 0x64, 0x59, 0xA9, 0x00, 0x85, 0x55, 0xA9, 0xAA, + 0xC9, 0x64, 0x90, 0x02, 0xE6, 0x55, 0xA5, 0x54, + 0xF0, 0x03, 0x4C, 0x92, 0x38, 0xA9, 0x98, 0x8D, + 0x06, 0x44, 0xA9, 0x0B, 0x8D, 0x04, 0x44, 0xAD, + 0x02, 0x44, 0xA9, 0x80, 0x8D, 0x1A, 0x7C, 0xA9, + 0xFF, 0x8D, 0x08, 0x7C, 0x8D, 0x0A, 0x7C, 0xA2, + 0x00, 0x8E, 0x00, 0x44, 0xEA, 0xEA, 0xAD, 0x02, + 0x44, 0xEA, 0xEA, 0x8E, 0x00, 0x44, 0xAD, 0x02, + 0x44, 0x29, 0x10, 0xF0, 0xF9, 0xA9, 0x11, 0x8E, + 0x00, 0x44, 0x8D, 0x1C, 0x7C, 0xAD, 0x02, 0x44, + 0x29, 0x10, 0xF0, 0xF9, 0x8E, 0x1C, 0x7C, 0xAD, + 0x08, 0x7C, 0x85, 0x57, 0xAD, 0x0A, 0x7C, 0x85, + 0x56, 0xC9, 0xD0, 0x90, 0x05, 0xA9, 0x02, 0x4C, + 0x82, 0x38, 0xA9, 0x01, 0x85, 0x54, 0xA9, 0x00, + 0x8D, 0x02, 0x44, 0x8D, 0x06, 0x44, 0x8D, 0x04, + 0x44, 0x4C, 0x92, 0x38, 0xAD, 0x00, 0x7C, 0xC5, + 0x5C, 0xF0, 0x1F, 0xC5, 0x5E, 0xF0, 0x09, 0x85, + 0x5E, 0xA9, 0x40, 0x85, 0x5D, 0x4C, 0xB8, 0x38, + 0xC6, 0x5D, 0x10, 0x0E, 0xA6, 0x58, 0x9D, 0x00, + 0x17, 0xE8, 0xE4, 0x59, 0xF0, 0x04, 0x86, 0x58, + 0x85, 0x5C, 0x20, 0x23, 0x3A, 0xA5, 0x07, 0xF0, + 0x0F, 0xA5, 0x0A, 0x85, 0x0B, 0xA5, 0x08, 0x09, + 0x10, 0x8D, 0x06, 0x44, 0x64, 0x02, 0x64, 0x07, + 0xA5, 0x00, 0xE5, 0x01, 0xC9, 0xC8, 0xA5, 0x09, + 0x29, 0xF3, 0xB0, 0x02, 0x09, 0x08, 0x8D, 0x04, + 0x44, 0xA5, 0x06, 0xF0, 0x08, 0xA5, 0x03, 0x85, + 0x04, 0x64, 0x02, 0x64, 0x06, 0x20, 0x23, 0x3A, + 0xA5, 0x13, 0xF0, 0x0F, 0xA5, 0x16, 0x85, 0x17, + 0xA5, 0x14, 0x09, 0x10, 0x8D, 0x06, 0x4C, 0x64, + 0x0E, 0x64, 0x13, 0xA5, 0x0C, 0xE5, 0x0D, 0xC9, + 0xC8, 0xA5, 0x15, 0x29, 0xF3, 0xB0, 0x02, 0x09, + 0x08, 0x8D, 0x04, 0x4C, 0xA5, 0x12, 0xF0, 0x08, + 0xA5, 0x0F, 0x85, 0x10, 0x64, 0x0E, 0x64, 0x12, + 0x20, 0x23, 0x3A, 0xA5, 0x1F, 0xF0, 0x0F, 0xA5, + 0x22, 0x85, 0x23, 0xA5, 0x20, 0x09, 0x10, 0x8D, + 0x06, 0x54, 0x64, 0x1A, 0x64, 0x1F, 0xA5, 0x18, + 0xE5, 0x19, 0xC9, 0xC8, 0xA5, 0x21, 0x29, 0xF3, + 0xB0, 0x02, 0x09, 0x08, 0x8D, 0x04, 0x54, 0xA5, + 0x1E, 0xF0, 0x08, 0xA5, 0x1B, 0x85, 0x1C, 0x64, + 0x1A, 0x64, 0x1E, 0x20, 0x23, 0x3A, 0xA5, 0x2B, + 0xF0, 0x0F, 0xA5, 0x2E, 0x85, 0x2F, 0xA5, 0x2C, + 0x09, 0x10, 0x8D, 0x06, 0x5C, 0x64, 0x26, 0x64, + 0x2B, 0xA5, 0x24, 0xE5, 0x25, 0xC9, 0xC8, 0xA5, + 0x2D, 0x29, 0xF3, 0xB0, 0x02, 0x09, 0x08, 0x8D, + 0x04, 0x5C, 0xA5, 0x2A, 0xF0, 0x08, 0xA5, 0x27, + 0x85, 0x28, 0x64, 0x26, 0x64, 0x2A, 0x20, 0x23, + 0x3A, 0xA5, 0x37, 0xF0, 0x0F, 0xA5, 0x3A, 0x85, + 0x3B, 0xA5, 0x38, 0x09, 0x10, 0x8D, 0x06, 0x64, + 0x64, 0x32, 0x64, 0x37, 0xA5, 0x30, 0xE5, 0x31, + 0xC9, 0xC8, 0xA5, 0x39, 0x29, 0xF3, 0xB0, 0x02, + 0x09, 0x08, 0x8D, 0x04, 0x64, 0xA5, 0x36, 0xF0, + 0x08, 0xA5, 0x33, 0x85, 0x34, 0x64, 0x32, 0x64, + 0x36, 0x20, 0x23, 0x3A, 0xA5, 0x43, 0xF0, 0x0F, + 0xA5, 0x46, 0x85, 0x47, 0xA5, 0x44, 0x09, 0x10, + 0x8D, 0x06, 0x6C, 0x64, 0x3E, 0x64, 0x43, 0xA5, + 0x3C, 0xE5, 0x3D, 0xC9, 0xC8, 0xA5, 0x45, 0x29, + 0xF3, 0xB0, 0x02, 0x09, 0x08, 0x8D, 0x04, 0x6C, + 0xA5, 0x42, 0xF0, 0x08, 0xA5, 0x3F, 0x85, 0x40, + 0x64, 0x3E, 0x64, 0x42, 0x20, 0x23, 0x3A, 0xA5, + 0x4F, 0xF0, 0x0F, 0xA5, 0x52, 0x85, 0x53, 0xA5, + 0x50, 0x09, 0x10, 0x8D, 0x06, 0x74, 0x64, 0x4A, + 0x64, 0x4F, 0xA5, 0x48, 0xE5, 0x49, 0xC9, 0xC8, + 0xA5, 0x51, 0x29, 0xF3, 0xB0, 0x02, 0x09, 0x08, + 0x8D, 0x04, 0x74, 0xA5, 0x4E, 0xF0, 0x08, 0xA5, + 0x4B, 0x85, 0x4C, 0x64, 0x4A, 0x64, 0x4E, 0x20, + 0x23, 0x3A, 0x4C, 0x92, 0x38, 0xAD, 0x02, 0x44, + 0x89, 0x08, 0xF0, 0x3B, 0x89, 0x02, 0xF0, 0x1B, + 0xAD, 0x00, 0x44, 0xD0, 0x32, 0xA6, 0x00, 0xA9, + 0x01, 0x9D, 0x00, 0x10, 0xA9, 0x01, 0x9D, 0x00, + 0x09, 0xE8, 0xE4, 0x01, 0xF0, 0x02, 0x86, 0x00, + 0x4C, 0x65, 0x3A, 0xA6, 0x00, 0xAD, 0x00, 0x44, + 0x9D, 0x00, 0x09, 0x9E, 0x00, 0x10, 0xE8, 0xE4, + 0x01, 0xF0, 0x02, 0x86, 0x00, 0x29, 0x7F, 0xC9, + 0x13, 0xD0, 0x04, 0xA5, 0x0B, 0x85, 0x02, 0xAD, + 0x02, 0x44, 0x29, 0x10, 0xF0, 0x2C, 0xA6, 0x05, + 0xF0, 0x0F, 0xAD, 0x02, 0x7C, 0x29, 0x01, 0xD0, + 0x21, 0x8E, 0x00, 0x44, 0x64, 0x05, 0x4C, 0x98, + 0x3A, 0xA6, 0x04, 0xE4, 0x03, 0xF0, 0x13, 0xA5, + 0x02, 0xD0, 0x0F, 0xAD, 0x02, 0x7C, 0x29, 0x01, + 0xD0, 0x08, 0xBD, 0x00, 0x02, 0x8D, 0x00, 0x44, + 0xE6, 0x04, 0xAD, 0x02, 0x4C, 0x89, 0x08, 0xF0, + 0x3B, 0x89, 0x02, 0xF0, 0x1B, 0xAD, 0x00, 0x4C, + 0xD0, 0x32, 0xA6, 0x0C, 0xA9, 0x01, 0x9D, 0x00, + 0x11, 0xA9, 0x01, 0x9D, 0x00, 0x0A, 0xE8, 0xE4, + 0x0D, 0xF0, 0x02, 0x86, 0x0C, 0x4C, 0xDA, 0x3A, + 0xA6, 0x0C, 0xAD, 0x00, 0x4C, 0x9D, 0x00, 0x0A, + 0x9E, 0x00, 0x11, 0xE8, 0xE4, 0x0D, 0xF0, 0x02, + 0x86, 0x0C, 0x29, 0x7F, 0xC9, 0x13, 0xD0, 0x04, + 0xA5, 0x17, 0x85, 0x0E, 0xAD, 0x02, 0x4C, 0x29, + 0x10, 0xF0, 0x2C, 0xA6, 0x11, 0xF0, 0x0F, 0xAD, + 0x02, 0x7C, 0x29, 0x02, 0xD0, 0x21, 0x8E, 0x00, + 0x4C, 0x64, 0x11, 0x4C, 0x0D, 0x3B, 0xA6, 0x10, + 0xE4, 0x0F, 0xF0, 0x13, 0xA5, 0x0E, 0xD0, 0x0F, + 0xAD, 0x02, 0x7C, 0x29, 0x02, 0xD0, 0x08, 0xBD, + 0x00, 0x03, 0x8D, 0x00, 0x4C, 0xE6, 0x10, 0xAD, + 0x02, 0x54, 0x89, 0x08, 0xF0, 0x3B, 0x89, 0x02, + 0xF0, 0x1B, 0xAD, 0x00, 0x54, 0xD0, 0x32, 0xA6, + 0x18, 0xA9, 0x01, 0x9D, 0x00, 0x12, 0xA9, 0x01, + 0x9D, 0x00, 0x0B, 0xE8, 0xE4, 0x19, 0xF0, 0x02, + 0x86, 0x18, 0x4C, 0x4F, 0x3B, 0xA6, 0x18, 0xAD, + 0x00, 0x54, 0x9D, 0x00, 0x0B, 0x9E, 0x00, 0x12, + 0xE8, 0xE4, 0x19, 0xF0, 0x02, 0x86, 0x18, 0x29, + 0x7F, 0xC9, 0x13, 0xD0, 0x04, 0xA5, 0x23, 0x85, + 0x1A, 0xAD, 0x02, 0x54, 0x29, 0x10, 0xF0, 0x2C, + 0xA6, 0x1D, 0xF0, 0x0F, 0xAD, 0x02, 0x7C, 0x29, + 0x04, 0xD0, 0x21, 0x8E, 0x00, 0x54, 0x64, 0x1D, + 0x4C, 0x82, 0x3B, 0xA6, 0x1C, 0xE4, 0x1B, 0xF0, + 0x13, 0xA5, 0x1A, 0xD0, 0x0F, 0xAD, 0x02, 0x7C, + 0x29, 0x04, 0xD0, 0x08, 0xBD, 0x00, 0x04, 0x8D, + 0x00, 0x54, 0xE6, 0x1C, 0xAD, 0x02, 0x5C, 0x89, + 0x08, 0xF0, 0x3B, 0x89, 0x02, 0xF0, 0x1B, 0xAD, + 0x00, 0x5C, 0xD0, 0x32, 0xA6, 0x24, 0xA9, 0x01, + 0x9D, 0x00, 0x13, 0xA9, 0x01, 0x9D, 0x00, 0x0C, + 0xE8, 0xE4, 0x25, 0xF0, 0x02, 0x86, 0x24, 0x4C, + 0xC4, 0x3B, 0xA6, 0x24, 0xAD, 0x00, 0x5C, 0x9D, + 0x00, 0x0C, 0x9E, 0x00, 0x13, 0xE8, 0xE4, 0x25, + 0xF0, 0x02, 0x86, 0x24, 0x29, 0x7F, 0xC9, 0x13, + 0xD0, 0x04, 0xA5, 0x2F, 0x85, 0x26, 0xAD, 0x02, + 0x5C, 0x29, 0x10, 0xF0, 0x2C, 0xA6, 0x29, 0xF0, + 0x0F, 0xAD, 0x02, 0x7C, 0x29, 0x08, 0xD0, 0x21, + 0x8E, 0x00, 0x5C, 0x64, 0x29, 0x4C, 0xF7, 0x3B, + 0xA6, 0x28, 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0x9D, 0x00, 0x15, 0xA9, 0x01, 0x9D, + 0x00, 0x0E, 0xE8, 0xE4, 0x3D, 0xF0, 0x02, 0x86, + 0x3C, 0x4C, 0xAE, 0x3C, 0xA6, 0x3C, 0xAD, 0x00, + 0x6C, 0x9D, 0x00, 0x0E, 0x9E, 0x00, 0x15, 0xE8, + 0xE4, 0x3D, 0xF0, 0x02, 0x86, 0x3C, 0x29, 0x7F, + 0xC9, 0x13, 0xD0, 0x04, 0xA5, 0x47, 0x85, 0x3E, + 0xAD, 0x02, 0x6C, 0x29, 0x10, 0xF0, 0x2C, 0xA6, + 0x41, 0xF0, 0x0F, 0xAD, 0x02, 0x7C, 0x29, 0x20, + 0xD0, 0x21, 0x8E, 0x00, 0x6C, 0x64, 0x41, 0x4C, + 0xE1, 0x3C, 0xA6, 0x40, 0xE4, 0x3F, 0xF0, 0x13, + 0xA5, 0x3E, 0xD0, 0x0F, 0xAD, 0x02, 0x7C, 0x29, + 0x20, 0xD0, 0x08, 0xBD, 0x00, 0x07, 0x8D, 0x00, + 0x6C, 0xE6, 0x40, 0xAD, 0x02, 0x74, 0x89, 0x08, + 0xF0, 0x3B, 0x89, 0x02, 0xF0, 0x1B, 0xAD, 0x00, + 0x74, 0xD0, 0x32, 0xA6, 0x48, 0xA9, 0x01, 0x9D, + 0x00, 0x16, 0xA9, 0x01, 0x9D, 0x00, 0x0F, 0xE8, + 0xE4, 0x49, 0xF0, 0x02, 0x86, 0x48, 0x4C, 0x23, + 0x3D, 0xA6, 0x48, 0xAD, 0x00, 0x74, 0x9D, 0x00, + 0x0F, 0x9E, 0x00, 0x16, 0xE8, 0xE4, 0x49, 0xF0, + 0x02, 0x86, 0x48, 0x29, 0x7F, 0xC9, 0x13, 0xD0, + 0x04, 0xA5, 0x53, 0x85, 0x4A, 0xAD, 0x02, 0x74, + 0x29, 0x10, 0xF0, 0x2C, 0xA6, 0x4D, 0xF0, 0x0F, + 0xAD, 0x02, 0x7C, 0x29, 0x40, 0xD0, 0x21, 0x8E, + 0x00, 0x74, 0x64, 0x4D, 0x4C, 0x56, 0x3D, 0xA6, + 0x4C, 0xE4, 0x4B, 0xF0, 0x13, 0xA5, 0x4A, 0xD0, + 0x0F, 0xAD, 0x02, 0x7C, 0x29, 0x40, 0xD0, 0x08, + 0xBD, 0x00, 0x08, 0x8D, 0x00, 0x74, 0xE6, 0x4C, + 0x60, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, + 0xFF, 0xFF, 0xFF, 0xFF, 0xD0, 0xD0, 0x00, 0x38, + 0xCE, 0xC0, +}; diff --git a/drivers/staging/generic_serial/sx.c b/drivers/staging/generic_serial/sx.c new file mode 100644 index 000000000000..1291462bcddb --- /dev/null +++ b/drivers/staging/generic_serial/sx.c @@ -0,0 +1,2894 @@ +/* sx.c -- driver for the Specialix SX series cards. + * + * This driver will also support the older SI, and XIO cards. + * + * + * (C) 1998 - 2004 R.E.Wolff@BitWizard.nl + * + * Simon Allen (simonallen@cix.compulink.co.uk) wrote a previous + * version of this driver. Some fragments may have been copied. (none + * yet :-) + * + * Specialix pays for the development and support of this driver. + * Please DO contact support@specialix.co.uk if you require + * support. But please read the documentation (sx.txt) first. + * + * + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be + * useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, + * USA. + * + * Revision history: + * Revision 1.33 2000/03/09 10:00:00 pvdl,wolff + * - Fixed module and port counting + * - Fixed signal handling + * - Fixed an Ooops + * + * Revision 1.32 2000/03/07 09:00:00 wolff,pvdl + * - Fixed some sx_dprintk typos + * - added detection for an invalid board/module configuration + * + * Revision 1.31 2000/03/06 12:00:00 wolff,pvdl + * - Added support for EISA + * + * Revision 1.30 2000/01/21 17:43:06 wolff + * - Added support for SX+ + * + * Revision 1.26 1999/08/05 15:22:14 wolff + * - Port to 2.3.x + * - Reformatted to Linus' liking. + * + * Revision 1.25 1999/07/30 14:24:08 wolff + * Had accidentally left "gs_debug" set to "-1" instead of "off" (=0). + * + * Revision 1.24 1999/07/28 09:41:52 wolff + * - I noticed the remark about use-count straying in sx.txt. I checked + * sx_open, and found a few places where that could happen. I hope it's + * fixed now. + * + * Revision 1.23 1999/07/28 08:56:06 wolff + * - Fixed crash when sx_firmware run twice. + * - Added sx_slowpoll as a module parameter (I guess nobody really wanted + * to change it from the default... ) + * - Fixed a stupid editing problem I introduced in 1.22. + * - Fixed dropping characters on a termios change. + * + * Revision 1.22 1999/07/26 21:01:43 wolff + * Russell Brown noticed that I had overlooked 4 out of six modem control + * signals in sx_getsignals. Ooops. + * + * Revision 1.21 1999/07/23 09:11:33 wolff + * I forgot to free dynamically allocated memory when the driver is unloaded. + * + * Revision 1.20 1999/07/20 06:25:26 wolff + * The "closing wait" wasn't honoured. Thanks to James Griffiths for + * reporting this. + * + * Revision 1.19 1999/07/11 08:59:59 wolff + * Fixed an oops in close, when an open was pending. Changed the memtest + * a bit. Should also test the board in word-mode, however my card fails the + * memtest then. I still have to figure out what is wrong... + * + * Revision 1.18 1999/06/10 09:38:42 wolff + * Changed the format of the firmware revision from %04x to %x.%02x . + * + * Revision 1.17 1999/06/04 09:44:35 wolff + * fixed problem: reference to pci stuff when config_pci was off... + * Thanks to Jorge Novo for noticing this. + * + * Revision 1.16 1999/06/02 08:30:15 wolff + * added/removed the workaround for the DCD bug in the Firmware. + * A bit more debugging code to locate that... + * + * Revision 1.15 1999/06/01 11:35:30 wolff + * when DCD is left low (floating?), on TA's the firmware first tells us + * that DCD is high, but after a short while suddenly comes to the + * conclusion that it is low. All this would be fine, if it weren't that + * Unix requires us to send a "hangup" signal in that case. This usually + * all happens BEFORE the program has had a chance to ioctl the device + * into clocal mode.. + * + * Revision 1.14 1999/05/25 11:18:59 wolff + * Added PCI-fix. + * Added checks for return code of sx_sendcommand. + * Don't issue "reconfig" if port isn't open yet. (bit us on TA modules...) + * + * Revision 1.13 1999/04/29 15:18:01 wolff + * Fixed an "oops" that showed on SuSE 6.0 systems. + * Activate DTR again after stty 0. + * + * Revision 1.12 1999/04/29 07:49:52 wolff + * Improved "stty 0" handling a bit. (used to change baud to 9600 assuming + * the connection would be dropped anyway. That is not always the case, + * and confuses people). + * Told the card to always monitor the modem signals. + * Added support for dynamic gs_debug adjustments. + * Now tells the rest of the system the number of ports. + * + * Revision 1.11 1999/04/24 11:11:30 wolff + * Fixed two stupid typos in the memory test. + * + * Revision 1.10 1999/04/24 10:53:39 wolff + * Added some of Christian's suggestions. + * Fixed an HW_COOK_IN bug (ISIG was not in I_OTHER. We used to trust the + * card to send the signal to the process.....) + * + * Revision 1.9 1999/04/23 07:26:38 wolff + * Included Christian Lademann's 2.0 compile-warning fixes and interrupt + * assignment redesign. + * Cleanup of some other stuff. + * + * Revision 1.8 1999/04/16 13:05:30 wolff + * fixed a DCD change unnoticed bug. + * + * Revision 1.7 1999/04/14 22:19:51 wolff + * Fixed typo that showed up in 2.0.x builds (get_user instead of Get_user!) + * + * Revision 1.6 1999/04/13 18:40:20 wolff + * changed misc-minor to 161, as assigned by HPA. + * + * Revision 1.5 1999/04/13 15:12:25 wolff + * Fixed use-count leak when "hangup" occurred. + * Added workaround for a stupid-PCIBIOS bug. + * + * + * Revision 1.4 1999/04/01 22:47:40 wolff + * Fixed < 1M linux-2.0 problem. + * (vremap isn't compatible with ioremap in that case) + * + * Revision 1.3 1999/03/31 13:45:45 wolff + * Firmware loading is now done through a separate IOCTL. + * + * Revision 1.2 1999/03/28 12:22:29 wolff + * rcs cleanup + * + * Revision 1.1 1999/03/28 12:10:34 wolff + * Readying for release on 2.0.x (sorry David, 1.01 becomes 1.1 for RCS). + * + * Revision 0.12 1999/03/28 09:20:10 wolff + * Fixed problem in 0.11, continueing cleanup. + * + * Revision 0.11 1999/03/28 08:46:44 wolff + * cleanup. Not good. + * + * Revision 0.10 1999/03/28 08:09:43 wolff + * Fixed loosing characters on close. + * + * Revision 0.9 1999/03/21 22:52:01 wolff + * Ported back to 2.2.... (minor things) + * + * Revision 0.8 1999/03/21 22:40:33 wolff + * Port to 2.0 + * + * Revision 0.7 1999/03/21 19:06:34 wolff + * Fixed hangup processing. + * + * Revision 0.6 1999/02/05 08:45:14 wolff + * fixed real_raw problems. Inclusion into kernel imminent. + * + * Revision 0.5 1998/12/21 23:51:06 wolff + * Snatched a nasty bug: sx_transmit_chars was getting re-entered, and it + * shouldn't have. THATs why I want to have transmit interrupts even when + * the buffer is empty. + * + * Revision 0.4 1998/12/17 09:34:46 wolff + * PPP works. ioctl works. Basically works! + * + * Revision 0.3 1998/12/15 13:05:18 wolff + * It works! Wow! Gotta start implementing IOCTL and stuff.... + * + * Revision 0.2 1998/12/01 08:33:53 wolff + * moved over to 2.1.130 + * + * Revision 0.1 1998/11/03 21:23:51 wolff + * Initial revision. Detects SX card. + * + * */ + +#define SX_VERSION 1.33 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +/* The 3.0.0 version of sxboards/sxwindow.h uses BYTE and WORD.... */ +#define BYTE u8 +#define WORD u16 + +/* .... but the 3.0.4 version uses _u8 and _u16. */ +#define _u8 u8 +#define _u16 u16 + +#include "sxboards.h" +#include "sxwindow.h" + +#include +#include "sx.h" + +/* I don't think that this driver can handle more than 256 ports on + one machine. You'll have to increase the number of boards in sx.h + if you want more than 4 boards. */ + +#ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 +#define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 +#endif + +/* Configurable options: + (Don't be too sure that it'll work if you toggle them) */ + +/* Am I paranoid or not ? ;-) */ +#undef SX_PARANOIA_CHECK + +/* 20 -> 2000 per second. The card should rate-limit interrupts at 100 + Hz, but it is user configurable. I don't recommend going above 1000 + Hz. The interrupt ratelimit might trigger if the interrupt is + shared with a very active other device. */ +#define IRQ_RATE_LIMIT 20 + +/* Sharing interrupts is possible now. If the other device wants more + than 2000 interrupts per second, we'd gracefully decline further + interrupts. That's not what we want. On the other hand, if the + other device interrupts 2000 times a second, don't use the SX + interrupt. Use polling. */ +#undef IRQ_RATE_LIMIT + +#if 0 +/* Not implemented */ +/* + * The following defines are mostly for testing purposes. But if you need + * some nice reporting in your syslog, you can define them also. + */ +#define SX_REPORT_FIFO +#define SX_REPORT_OVERRUN +#endif + +/* Function prototypes */ +static void sx_disable_tx_interrupts(void *ptr); +static void sx_enable_tx_interrupts(void *ptr); +static void sx_disable_rx_interrupts(void *ptr); +static void sx_enable_rx_interrupts(void *ptr); +static int sx_carrier_raised(struct tty_port *port); +static void sx_shutdown_port(void *ptr); +static int sx_set_real_termios(void *ptr); +static void sx_close(void *ptr); +static int sx_chars_in_buffer(void *ptr); +static int sx_init_board(struct sx_board *board); +static int sx_init_portstructs(int nboards, int nports); +static long sx_fw_ioctl(struct file *filp, unsigned int cmd, + unsigned long arg); +static int sx_init_drivers(void); + +static struct tty_driver *sx_driver; + +static DEFINE_MUTEX(sx_boards_lock); +static struct sx_board boards[SX_NBOARDS]; +static struct sx_port *sx_ports; +static int sx_initialized; +static int sx_nports; +static int sx_debug; + +/* You can have the driver poll your card. + - Set sx_poll to 1 to poll every timer tick (10ms on Intel). + This is used when the card cannot use an interrupt for some reason. + + - set sx_slowpoll to 100 to do an extra poll once a second (on Intel). If + the driver misses an interrupt (report this if it DOES happen to you!) + everything will continue to work.... + */ +static int sx_poll = 1; +static int sx_slowpoll; + +/* The card limits the number of interrupts per second. + At 115k2 "100" should be sufficient. + If you're using higher baudrates, you can increase this... + */ + +static int sx_maxints = 100; + +#ifdef CONFIG_ISA + +/* These are the only open spaces in my computer. Yours may have more + or less.... -- REW + duh: Card at 0xa0000 is possible on HP Netserver?? -- pvdl +*/ +static int sx_probe_addrs[] = { + 0xc0000, 0xd0000, 0xe0000, + 0xc8000, 0xd8000, 0xe8000 +}; +static int si_probe_addrs[] = { + 0xc0000, 0xd0000, 0xe0000, + 0xc8000, 0xd8000, 0xe8000, 0xa0000 +}; +static int si1_probe_addrs[] = { + 0xd0000 +}; + +#define NR_SX_ADDRS ARRAY_SIZE(sx_probe_addrs) +#define NR_SI_ADDRS ARRAY_SIZE(si_probe_addrs) +#define NR_SI1_ADDRS ARRAY_SIZE(si1_probe_addrs) + +module_param_array(sx_probe_addrs, int, NULL, 0); +module_param_array(si_probe_addrs, int, NULL, 0); +#endif + +/* Set the mask to all-ones. This alas, only supports 32 interrupts. + Some architectures may need more. */ +static int sx_irqmask = -1; + +module_param(sx_poll, int, 0); +module_param(sx_slowpoll, int, 0); +module_param(sx_maxints, int, 0); +module_param(sx_debug, int, 0); +module_param(sx_irqmask, int, 0); + +MODULE_LICENSE("GPL"); + +static struct real_driver sx_real_driver = { + sx_disable_tx_interrupts, + sx_enable_tx_interrupts, + sx_disable_rx_interrupts, + sx_enable_rx_interrupts, + sx_shutdown_port, + sx_set_real_termios, + sx_chars_in_buffer, + sx_close, +}; + +/* + This driver can spew a whole lot of debugging output at you. If you + need maximum performance, you should disable the DEBUG define. To + aid in debugging in the field, I'm leaving the compile-time debug + features enabled, and disable them "runtime". That allows me to + instruct people with problems to enable debugging without requiring + them to recompile... +*/ +#define DEBUG + +#ifdef DEBUG +#define sx_dprintk(f, str...) if (sx_debug & f) printk (str) +#else +#define sx_dprintk(f, str...) /* nothing */ +#endif + +#define func_enter() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s\n",__func__) +#define func_exit() sx_dprintk(SX_DEBUG_FLOW, "sx: exit %s\n",__func__) + +#define func_enter2() sx_dprintk(SX_DEBUG_FLOW, "sx: enter %s (port %d)\n", \ + __func__, port->line) + +/* + * Firmware loader driver specific routines + * + */ + +static const struct file_operations sx_fw_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = sx_fw_ioctl, + .llseek = noop_llseek, +}; + +static struct miscdevice sx_fw_device = { + SXCTL_MISC_MINOR, "sxctl", &sx_fw_fops +}; + +#ifdef SX_PARANOIA_CHECK + +/* This doesn't work. Who's paranoid around here? Not me! */ + +static inline int sx_paranoia_check(struct sx_port const *port, + char *name, const char *routine) +{ + static const char *badmagic = KERN_ERR "sx: Warning: bad sx port magic " + "number for device %s in %s\n"; + static const char *badinfo = KERN_ERR "sx: Warning: null sx port for " + "device %s in %s\n"; + + if (!port) { + printk(badinfo, name, routine); + return 1; + } + if (port->magic != SX_MAGIC) { + printk(badmagic, name, routine); + return 1; + } + + return 0; +} +#else +#define sx_paranoia_check(a,b,c) 0 +#endif + +/* The timeouts. First try 30 times as fast as possible. Then give + the card some time to breathe between accesses. (Otherwise the + processor on the card might not be able to access its OWN bus... */ + +#define TIMEOUT_1 30 +#define TIMEOUT_2 1000000 + +#ifdef DEBUG +static void my_hd_io(void __iomem *p, int len) +{ + int i, j, ch; + unsigned char __iomem *addr = p; + + for (i = 0; i < len; i += 16) { + printk("%p ", addr + i); + for (j = 0; j < 16; j++) { + printk("%02x %s", readb(addr + j + i), + (j == 7) ? " " : ""); + } + for (j = 0; j < 16; j++) { + ch = readb(addr + j + i); + printk("%c", (ch < 0x20) ? '.' : + ((ch > 0x7f) ? '.' : ch)); + } + printk("\n"); + } +} +static void my_hd(void *p, int len) +{ + int i, j, ch; + unsigned char *addr = p; + + for (i = 0; i < len; i += 16) { + printk("%p ", addr + i); + for (j = 0; j < 16; j++) { + printk("%02x %s", addr[j + i], (j == 7) ? " " : ""); + } + for (j = 0; j < 16; j++) { + ch = addr[j + i]; + printk("%c", (ch < 0x20) ? '.' : + ((ch > 0x7f) ? '.' : ch)); + } + printk("\n"); + } +} +#endif + +/* This needs redoing for Alpha -- REW -- Done. */ + +static inline void write_sx_byte(struct sx_board *board, int offset, u8 byte) +{ + writeb(byte, board->base + offset); +} + +static inline u8 read_sx_byte(struct sx_board *board, int offset) +{ + return readb(board->base + offset); +} + +static inline void write_sx_word(struct sx_board *board, int offset, u16 word) +{ + writew(word, board->base + offset); +} + +static inline u16 read_sx_word(struct sx_board *board, int offset) +{ + return readw(board->base + offset); +} + +static int sx_busy_wait_eq(struct sx_board *board, + int offset, int mask, int correctval) +{ + int i; + + func_enter(); + + for (i = 0; i < TIMEOUT_1; i++) + if ((read_sx_byte(board, offset) & mask) == correctval) { + func_exit(); + return 1; + } + + for (i = 0; i < TIMEOUT_2; i++) { + if ((read_sx_byte(board, offset) & mask) == correctval) { + func_exit(); + return 1; + } + udelay(1); + } + + func_exit(); + return 0; +} + +static int sx_busy_wait_neq(struct sx_board *board, + int offset, int mask, int badval) +{ + int i; + + func_enter(); + + for (i = 0; i < TIMEOUT_1; i++) + if ((read_sx_byte(board, offset) & mask) != badval) { + func_exit(); + return 1; + } + + for (i = 0; i < TIMEOUT_2; i++) { + if ((read_sx_byte(board, offset) & mask) != badval) { + func_exit(); + return 1; + } + udelay(1); + } + + func_exit(); + return 0; +} + +/* 5.6.4 of 6210028 r2.3 */ +static int sx_reset(struct sx_board *board) +{ + func_enter(); + + if (IS_SX_BOARD(board)) { + + write_sx_byte(board, SX_CONFIG, 0); + write_sx_byte(board, SX_RESET, 1); /* Value doesn't matter */ + + if (!sx_busy_wait_eq(board, SX_RESET_STATUS, 1, 0)) { + printk(KERN_INFO "sx: Card doesn't respond to " + "reset...\n"); + return 0; + } + } else if (IS_EISA_BOARD(board)) { + outb(board->irq << 4, board->eisa_base + 0xc02); + } else if (IS_SI1_BOARD(board)) { + write_sx_byte(board, SI1_ISA_RESET, 0); /*value doesn't matter*/ + } else { + /* Gory details of the SI/ISA board */ + write_sx_byte(board, SI2_ISA_RESET, SI2_ISA_RESET_SET); + write_sx_byte(board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_CLEAR); + write_sx_byte(board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_CLEAR); + write_sx_byte(board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_CLEAR); + write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); + write_sx_byte(board, SI2_ISA_IRQSET, SI2_ISA_IRQSET_CLEAR); + } + + func_exit(); + return 1; +} + +/* This doesn't work on machines where "NULL" isn't 0 */ +/* If you have one of those, someone will need to write + the equivalent of this, which will amount to about 3 lines. I don't + want to complicate this right now. -- REW + (See, I do write comments every now and then :-) */ +#define OFFSETOF(strct, elem) ((long)&(((struct strct *)NULL)->elem)) + +#define CHAN_OFFSET(port,elem) (port->ch_base + OFFSETOF (_SXCHANNEL, elem)) +#define MODU_OFFSET(board,addr,elem) (addr + OFFSETOF (_SXMODULE, elem)) +#define BRD_OFFSET(board,elem) (OFFSETOF (_SXCARD, elem)) + +#define sx_write_channel_byte(port, elem, val) \ + write_sx_byte (port->board, CHAN_OFFSET (port, elem), val) + +#define sx_read_channel_byte(port, elem) \ + read_sx_byte (port->board, CHAN_OFFSET (port, elem)) + +#define sx_write_channel_word(port, elem, val) \ + write_sx_word (port->board, CHAN_OFFSET (port, elem), val) + +#define sx_read_channel_word(port, elem) \ + read_sx_word (port->board, CHAN_OFFSET (port, elem)) + +#define sx_write_module_byte(board, addr, elem, val) \ + write_sx_byte (board, MODU_OFFSET (board, addr, elem), val) + +#define sx_read_module_byte(board, addr, elem) \ + read_sx_byte (board, MODU_OFFSET (board, addr, elem)) + +#define sx_write_module_word(board, addr, elem, val) \ + write_sx_word (board, MODU_OFFSET (board, addr, elem), val) + +#define sx_read_module_word(board, addr, elem) \ + read_sx_word (board, MODU_OFFSET (board, addr, elem)) + +#define sx_write_board_byte(board, elem, val) \ + write_sx_byte (board, BRD_OFFSET (board, elem), val) + +#define sx_read_board_byte(board, elem) \ + read_sx_byte (board, BRD_OFFSET (board, elem)) + +#define sx_write_board_word(board, elem, val) \ + write_sx_word (board, BRD_OFFSET (board, elem), val) + +#define sx_read_board_word(board, elem) \ + read_sx_word (board, BRD_OFFSET (board, elem)) + +static int sx_start_board(struct sx_board *board) +{ + if (IS_SX_BOARD(board)) { + write_sx_byte(board, SX_CONFIG, SX_CONF_BUSEN); + } else if (IS_EISA_BOARD(board)) { + write_sx_byte(board, SI2_EISA_OFF, SI2_EISA_VAL); + outb((board->irq << 4) | 4, board->eisa_base + 0xc02); + } else if (IS_SI1_BOARD(board)) { + write_sx_byte(board, SI1_ISA_RESET_CLEAR, 0); + write_sx_byte(board, SI1_ISA_INTCL, 0); + } else { + /* Don't bug me about the clear_set. + I haven't the foggiest idea what it's about -- REW */ + write_sx_byte(board, SI2_ISA_RESET, SI2_ISA_RESET_CLEAR); + write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); + } + return 1; +} + +#define SX_IRQ_REG_VAL(board) \ + ((board->flags & SX_ISA_BOARD) ? (board->irq << 4) : 0) + +/* Note. The SX register is write-only. Therefore, we have to enable the + bus too. This is a no-op, if you don't mess with this driver... */ +static int sx_start_interrupts(struct sx_board *board) +{ + + /* Don't call this with board->irq == 0 */ + + if (IS_SX_BOARD(board)) { + write_sx_byte(board, SX_CONFIG, SX_IRQ_REG_VAL(board) | + SX_CONF_BUSEN | SX_CONF_HOSTIRQ); + } else if (IS_EISA_BOARD(board)) { + inb(board->eisa_base + 0xc03); + } else if (IS_SI1_BOARD(board)) { + write_sx_byte(board, SI1_ISA_INTCL, 0); + write_sx_byte(board, SI1_ISA_INTCL_CLEAR, 0); + } else { + switch (board->irq) { + case 11: + write_sx_byte(board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_SET); + break; + case 12: + write_sx_byte(board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_SET); + break; + case 15: + write_sx_byte(board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_SET); + break; + default: + printk(KERN_INFO "sx: SI/XIO card doesn't support " + "interrupt %d.\n", board->irq); + return 0; + } + write_sx_byte(board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); + } + + return 1; +} + +static int sx_send_command(struct sx_port *port, + int command, int mask, int newstat) +{ + func_enter2(); + write_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat), command); + func_exit(); + return sx_busy_wait_eq(port->board, CHAN_OFFSET(port, hi_hstat), mask, + newstat); +} + +static char *mod_type_s(int module_type) +{ + switch (module_type) { + case TA4: + return "TA4"; + case TA8: + return "TA8"; + case TA4_ASIC: + return "TA4_ASIC"; + case TA8_ASIC: + return "TA8_ASIC"; + case MTA_CD1400: + return "MTA_CD1400"; + case SXDC: + return "SXDC"; + default: + return "Unknown/invalid"; + } +} + +static char *pan_type_s(int pan_type) +{ + switch (pan_type) { + case MOD_RS232DB25: + return "MOD_RS232DB25"; + case MOD_RS232RJ45: + return "MOD_RS232RJ45"; + case MOD_RS422DB25: + return "MOD_RS422DB25"; + case MOD_PARALLEL: + return "MOD_PARALLEL"; + case MOD_2_RS232DB25: + return "MOD_2_RS232DB25"; + case MOD_2_RS232RJ45: + return "MOD_2_RS232RJ45"; + case MOD_2_RS422DB25: + return "MOD_2_RS422DB25"; + case MOD_RS232DB25MALE: + return "MOD_RS232DB25MALE"; + case MOD_2_PARALLEL: + return "MOD_2_PARALLEL"; + case MOD_BLANK: + return "empty"; + default: + return "invalid"; + } +} + +static int mod_compat_type(int module_type) +{ + return module_type >> 4; +} + +static void sx_reconfigure_port(struct sx_port *port) +{ + if (sx_read_channel_byte(port, hi_hstat) == HS_IDLE_OPEN) { + if (sx_send_command(port, HS_CONFIG, -1, HS_IDLE_OPEN) != 1) { + printk(KERN_WARNING "sx: Sent reconfigure command, but " + "card didn't react.\n"); + } + } else { + sx_dprintk(SX_DEBUG_TERMIOS, "sx: Not sending reconfigure: " + "port isn't open (%02x).\n", + sx_read_channel_byte(port, hi_hstat)); + } +} + +static void sx_setsignals(struct sx_port *port, int dtr, int rts) +{ + int t; + func_enter2(); + + t = sx_read_channel_byte(port, hi_op); + if (dtr >= 0) + t = dtr ? (t | OP_DTR) : (t & ~OP_DTR); + if (rts >= 0) + t = rts ? (t | OP_RTS) : (t & ~OP_RTS); + sx_write_channel_byte(port, hi_op, t); + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "setsignals: %d/%d\n", dtr, rts); + + func_exit(); +} + +static int sx_getsignals(struct sx_port *port) +{ + int i_stat, o_stat; + + o_stat = sx_read_channel_byte(port, hi_op); + i_stat = sx_read_channel_byte(port, hi_ip); + + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) " + "%02x/%02x\n", + (o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0, + port->c_dcd, tty_port_carrier_raised(&port->gs.port), + sx_read_channel_byte(port, hi_ip), + sx_read_channel_byte(port, hi_state)); + + return (((o_stat & OP_DTR) ? TIOCM_DTR : 0) | + ((o_stat & OP_RTS) ? TIOCM_RTS : 0) | + ((i_stat & IP_CTS) ? TIOCM_CTS : 0) | + ((i_stat & IP_DCD) ? TIOCM_CAR : 0) | + ((i_stat & IP_DSR) ? TIOCM_DSR : 0) | + ((i_stat & IP_RI) ? TIOCM_RNG : 0)); +} + +static void sx_set_baud(struct sx_port *port) +{ + int t; + + if (port->board->ta_type == MOD_SXDC) { + switch (port->gs.baud) { + /* Save some typing work... */ +#define e(x) case x: t = BAUD_ ## x; break + e(50); + e(75); + e(110); + e(150); + e(200); + e(300); + e(600); + e(1200); + e(1800); + e(2000); + e(2400); + e(4800); + e(7200); + e(9600); + e(14400); + e(19200); + e(28800); + e(38400); + e(56000); + e(57600); + e(64000); + e(76800); + e(115200); + e(128000); + e(150000); + e(230400); + e(256000); + e(460800); + e(921600); + case 134: + t = BAUD_134_5; + break; + case 0: + t = -1; + break; + default: + /* Can I return "invalid"? */ + t = BAUD_9600; + printk(KERN_INFO "sx: unsupported baud rate: %d.\n", + port->gs.baud); + break; + } +#undef e + if (t > 0) { +/* The baud rate is not set to 0, so we're enabeling DTR... -- REW */ + sx_setsignals(port, 1, -1); + /* XXX This is not TA & MTA compatible */ + sx_write_channel_byte(port, hi_csr, 0xff); + + sx_write_channel_byte(port, hi_txbaud, t); + sx_write_channel_byte(port, hi_rxbaud, t); + } else { + sx_setsignals(port, 0, -1); + } + } else { + switch (port->gs.baud) { +#define e(x) case x: t = CSR_ ## x; break + e(75); + e(150); + e(300); + e(600); + e(1200); + e(2400); + e(4800); + e(1800); + e(9600); + e(19200); + e(57600); + e(38400); +/* TA supports 110, but not 115200, MTA supports 115200, but not 110 */ + case 110: + if (port->board->ta_type == MOD_TA) { + t = CSR_110; + break; + } else { + t = CSR_9600; + printk(KERN_INFO "sx: Unsupported baud rate: " + "%d.\n", port->gs.baud); + break; + } + case 115200: + if (port->board->ta_type == MOD_TA) { + t = CSR_9600; + printk(KERN_INFO "sx: Unsupported baud rate: " + "%d.\n", port->gs.baud); + break; + } else { + t = CSR_110; + break; + } + case 0: + t = -1; + break; + default: + t = CSR_9600; + printk(KERN_INFO "sx: Unsupported baud rate: %d.\n", + port->gs.baud); + break; + } +#undef e + if (t >= 0) { + sx_setsignals(port, 1, -1); + sx_write_channel_byte(port, hi_csr, t * 0x11); + } else { + sx_setsignals(port, 0, -1); + } + } +} + +/* Simon Allen's version of this routine was 225 lines long. 85 is a lot + better. -- REW */ + +static int sx_set_real_termios(void *ptr) +{ + struct sx_port *port = ptr; + + func_enter2(); + + if (!port->gs.port.tty) + return 0; + + /* What is this doing here? -- REW + Ha! figured it out. It is to allow you to get DTR active again + if you've dropped it with stty 0. Moved to set_baud, where it + belongs (next to the drop dtr if baud == 0) -- REW */ + /* sx_setsignals (port, 1, -1); */ + + sx_set_baud(port); + +#define CFLAG port->gs.port.tty->termios->c_cflag + sx_write_channel_byte(port, hi_mr1, + (C_PARENB(port->gs.port.tty) ? MR1_WITH : MR1_NONE) | + (C_PARODD(port->gs.port.tty) ? MR1_ODD : MR1_EVEN) | + (C_CRTSCTS(port->gs.port.tty) ? MR1_RTS_RXFLOW : 0) | + (((CFLAG & CSIZE) == CS8) ? MR1_8_BITS : 0) | + (((CFLAG & CSIZE) == CS7) ? MR1_7_BITS : 0) | + (((CFLAG & CSIZE) == CS6) ? MR1_6_BITS : 0) | + (((CFLAG & CSIZE) == CS5) ? MR1_5_BITS : 0)); + + sx_write_channel_byte(port, hi_mr2, + (C_CRTSCTS(port->gs.port.tty) ? MR2_CTS_TXFLOW : 0) | + (C_CSTOPB(port->gs.port.tty) ? MR2_2_STOP : + MR2_1_STOP)); + + switch (CFLAG & CSIZE) { + case CS8: + sx_write_channel_byte(port, hi_mask, 0xff); + break; + case CS7: + sx_write_channel_byte(port, hi_mask, 0x7f); + break; + case CS6: + sx_write_channel_byte(port, hi_mask, 0x3f); + break; + case CS5: + sx_write_channel_byte(port, hi_mask, 0x1f); + break; + default: + printk(KERN_INFO "sx: Invalid wordsize: %u\n", + (unsigned int)CFLAG & CSIZE); + break; + } + + sx_write_channel_byte(port, hi_prtcl, + (I_IXON(port->gs.port.tty) ? SP_TXEN : 0) | + (I_IXOFF(port->gs.port.tty) ? SP_RXEN : 0) | + (I_IXANY(port->gs.port.tty) ? SP_TANY : 0) | SP_DCEN); + + sx_write_channel_byte(port, hi_break, + (I_IGNBRK(port->gs.port.tty) ? BR_IGN : 0 | + I_BRKINT(port->gs.port.tty) ? BR_INT : 0)); + + sx_write_channel_byte(port, hi_txon, START_CHAR(port->gs.port.tty)); + sx_write_channel_byte(port, hi_rxon, START_CHAR(port->gs.port.tty)); + sx_write_channel_byte(port, hi_txoff, STOP_CHAR(port->gs.port.tty)); + sx_write_channel_byte(port, hi_rxoff, STOP_CHAR(port->gs.port.tty)); + + sx_reconfigure_port(port); + + /* Tell line discipline whether we will do input cooking */ + if (I_OTHER(port->gs.port.tty)) { + clear_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags); + } else { + set_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags); + } + sx_dprintk(SX_DEBUG_TERMIOS, "iflags: %x(%d) ", + (unsigned int)port->gs.port.tty->termios->c_iflag, + I_OTHER(port->gs.port.tty)); + +/* Tell line discipline whether we will do output cooking. + * If OPOST is set and no other output flags are set then we can do output + * processing. Even if only *one* other flag in the O_OTHER group is set + * we do cooking in software. + */ + if (O_OPOST(port->gs.port.tty) && !O_OTHER(port->gs.port.tty)) { + set_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags); + } else { + clear_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags); + } + sx_dprintk(SX_DEBUG_TERMIOS, "oflags: %x(%d)\n", + (unsigned int)port->gs.port.tty->termios->c_oflag, + O_OTHER(port->gs.port.tty)); + /* port->c_dcd = sx_get_CD (port); */ + func_exit(); + return 0; +} + +/* ********************************************************************** * + * the interrupt related routines * + * ********************************************************************** */ + +/* Note: + Other drivers use the macro "MIN" to calculate how much to copy. + This has the disadvantage that it will evaluate parts twice. That's + expensive when it's IO (and the compiler cannot optimize those away!). + Moreover, I'm not sure that you're race-free. + + I assign a value, and then only allow the value to decrease. This + is always safe. This makes the code a few lines longer, and you + know I'm dead against that, but I think it is required in this + case. */ + +static void sx_transmit_chars(struct sx_port *port) +{ + int c; + int tx_ip; + int txroom; + + func_enter2(); + sx_dprintk(SX_DEBUG_TRANSMIT, "Port %p: transmit %d chars\n", + port, port->gs.xmit_cnt); + + if (test_and_set_bit(SX_PORT_TRANSMIT_LOCK, &port->locks)) { + return; + } + + while (1) { + c = port->gs.xmit_cnt; + + sx_dprintk(SX_DEBUG_TRANSMIT, "Copying %d ", c); + tx_ip = sx_read_channel_byte(port, hi_txipos); + + /* Took me 5 minutes to deduce this formula. + Luckily it is literally in the manual in section 6.5.4.3.5 */ + txroom = (sx_read_channel_byte(port, hi_txopos) - tx_ip - 1) & + 0xff; + + /* Don't copy more bytes than there is room for in the buffer */ + if (c > txroom) + c = txroom; + sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%d) ", c, txroom); + + /* Don't copy past the end of the hardware transmit buffer */ + if (c > 0x100 - tx_ip) + c = 0x100 - tx_ip; + + sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%d) ", c, 0x100 - tx_ip); + + /* Don't copy pas the end of the source buffer */ + if (c > SERIAL_XMIT_SIZE - port->gs.xmit_tail) + c = SERIAL_XMIT_SIZE - port->gs.xmit_tail; + + sx_dprintk(SX_DEBUG_TRANSMIT, " %d(%ld) \n", + c, SERIAL_XMIT_SIZE - port->gs.xmit_tail); + + /* If for one reason or another, we can't copy more data, we're + done! */ + if (c == 0) + break; + + memcpy_toio(port->board->base + CHAN_OFFSET(port, hi_txbuf) + + tx_ip, port->gs.xmit_buf + port->gs.xmit_tail, c); + + /* Update the pointer in the card */ + sx_write_channel_byte(port, hi_txipos, (tx_ip + c) & 0xff); + + /* Update the kernel buffer end */ + port->gs.xmit_tail = (port->gs.xmit_tail + c) & + (SERIAL_XMIT_SIZE - 1); + + /* This one last. (this is essential) + It would allow others to start putting more data into the + buffer! */ + port->gs.xmit_cnt -= c; + } + + if (port->gs.xmit_cnt == 0) { + sx_disable_tx_interrupts(port); + } + + if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) { + tty_wakeup(port->gs.port.tty); + sx_dprintk(SX_DEBUG_TRANSMIT, "Waking up.... ldisc (%d)....\n", + port->gs.wakeup_chars); + } + + clear_bit(SX_PORT_TRANSMIT_LOCK, &port->locks); + func_exit(); +} + +/* Note the symmetry between receiving chars and transmitting them! + Note: The kernel should have implemented both a receive buffer and + a transmit buffer. */ + +/* Inlined: Called only once. Remove the inline when you add another call */ +static inline void sx_receive_chars(struct sx_port *port) +{ + int c; + int rx_op; + struct tty_struct *tty; + int copied = 0; + unsigned char *rp; + + func_enter2(); + tty = port->gs.port.tty; + while (1) { + rx_op = sx_read_channel_byte(port, hi_rxopos); + c = (sx_read_channel_byte(port, hi_rxipos) - rx_op) & 0xff; + + sx_dprintk(SX_DEBUG_RECEIVE, "rxop=%d, c = %d.\n", rx_op, c); + + /* Don't copy past the end of the hardware receive buffer */ + if (rx_op + c > 0x100) + c = 0x100 - rx_op; + + sx_dprintk(SX_DEBUG_RECEIVE, "c = %d.\n", c); + + /* Don't copy more bytes than there is room for in the buffer */ + + c = tty_prepare_flip_string(tty, &rp, c); + + sx_dprintk(SX_DEBUG_RECEIVE, "c = %d.\n", c); + + /* If for one reason or another, we can't copy more data, we're done! */ + if (c == 0) + break; + + sx_dprintk(SX_DEBUG_RECEIVE, "Copying over %d chars. First is " + "%d at %lx\n", c, read_sx_byte(port->board, + CHAN_OFFSET(port, hi_rxbuf) + rx_op), + CHAN_OFFSET(port, hi_rxbuf)); + memcpy_fromio(rp, port->board->base + + CHAN_OFFSET(port, hi_rxbuf) + rx_op, c); + + /* This one last. ( Not essential.) + It allows the card to start putting more data into the + buffer! + Update the pointer in the card */ + sx_write_channel_byte(port, hi_rxopos, (rx_op + c) & 0xff); + + copied += c; + } + if (copied) { + struct timeval tv; + + do_gettimeofday(&tv); + sx_dprintk(SX_DEBUG_RECEIVE, "pushing flipq port %d (%3d " + "chars): %d.%06d (%d/%d)\n", port->line, + copied, (int)(tv.tv_sec % 60), (int)tv.tv_usec, + tty->raw, tty->real_raw); + + /* Tell the rest of the system the news. Great news. New + characters! */ + tty_flip_buffer_push(tty); + /* tty_schedule_flip (tty); */ + } + + func_exit(); +} + +/* Inlined: it is called only once. Remove the inline if you add another + call */ +static inline void sx_check_modem_signals(struct sx_port *port) +{ + int hi_state; + int c_dcd; + + hi_state = sx_read_channel_byte(port, hi_state); + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n", + port->c_dcd, tty_port_carrier_raised(&port->gs.port)); + + if (hi_state & ST_BREAK) { + hi_state &= ~ST_BREAK; + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a break.\n"); + sx_write_channel_byte(port, hi_state, hi_state); + gs_got_break(&port->gs); + } + if (hi_state & ST_DCD) { + hi_state &= ~ST_DCD; + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n"); + sx_write_channel_byte(port, hi_state, hi_state); + c_dcd = tty_port_carrier_raised(&port->gs.port); + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd); + if (c_dcd != port->c_dcd) { + port->c_dcd = c_dcd; + if (tty_port_carrier_raised(&port->gs.port)) { + /* DCD went UP */ + if ((sx_read_channel_byte(port, hi_hstat) != + HS_IDLE_CLOSED) && + !(port->gs.port.tty->termios-> + c_cflag & CLOCAL)) { + /* Are we blocking in open? */ + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " + "active, unblocking open\n"); + wake_up_interruptible(&port->gs.port. + open_wait); + } else { + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " + "raised. Ignoring.\n"); + } + } else { + /* DCD went down! */ + if (!(port->gs.port.tty->termios->c_cflag & CLOCAL)){ + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " + "dropped. hanging up....\n"); + tty_hangup(port->gs.port.tty); + } else { + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD " + "dropped. ignoring.\n"); + } + } + } else { + sx_dprintk(SX_DEBUG_MODEMSIGNALS, "Hmmm. card told us " + "DCD changed, but it didn't.\n"); + } + } +} + +/* This is what an interrupt routine should look like. + * Small, elegant, clear. + */ + +static irqreturn_t sx_interrupt(int irq, void *ptr) +{ + struct sx_board *board = ptr; + struct sx_port *port; + int i; + + func_enter(); + sx_dprintk(SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n", irq, + board->irq); + + /* AAargh! The order in which to do these things is essential and + not trivial. + + - Rate limit goes before "recursive". Otherwise a series of + recursive calls will hang the machine in the interrupt routine. + + - hardware twiddling goes before "recursive". Otherwise when we + poll the card, and a recursive interrupt happens, we won't + ack the card, so it might keep on interrupting us. (especially + level sensitive interrupt systems like PCI). + + - Rate limit goes before hardware twiddling. Otherwise we won't + catch a card that has gone bonkers. + + - The "initialized" test goes after the hardware twiddling. Otherwise + the card will stick us in the interrupt routine again. + + - The initialized test goes before recursive. + */ + +#ifdef IRQ_RATE_LIMIT + /* Aaargh! I'm ashamed. This costs more lines-of-code than the + actual interrupt routine!. (Well, used to when I wrote that + comment) */ + { + static int lastjif; + static int nintr = 0; + + if (lastjif == jiffies) { + if (++nintr > IRQ_RATE_LIMIT) { + free_irq(board->irq, board); + printk(KERN_ERR "sx: Too many interrupts. " + "Turning off interrupt %d.\n", + board->irq); + } + } else { + lastjif = jiffies; + nintr = 0; + } + } +#endif + + if (board->irq == irq) { + /* Tell the card we've noticed the interrupt. */ + + sx_write_board_word(board, cc_int_pending, 0); + if (IS_SX_BOARD(board)) { + write_sx_byte(board, SX_RESET_IRQ, 1); + } else if (IS_EISA_BOARD(board)) { + inb(board->eisa_base + 0xc03); + write_sx_word(board, 8, 0); + } else { + write_sx_byte(board, SI2_ISA_INTCLEAR, + SI2_ISA_INTCLEAR_CLEAR); + write_sx_byte(board, SI2_ISA_INTCLEAR, + SI2_ISA_INTCLEAR_SET); + } + } + + if (!sx_initialized) + return IRQ_HANDLED; + if (!(board->flags & SX_BOARD_INITIALIZED)) + return IRQ_HANDLED; + + if (test_and_set_bit(SX_BOARD_INTR_LOCK, &board->locks)) { + printk(KERN_ERR "Recursive interrupt! (%d)\n", board->irq); + return IRQ_HANDLED; + } + + for (i = 0; i < board->nports; i++) { + port = &board->ports[i]; + if (port->gs.port.flags & GS_ACTIVE) { + if (sx_read_channel_byte(port, hi_state)) { + sx_dprintk(SX_DEBUG_INTERRUPTS, "Port %d: " + "modem signal change?... \n",i); + sx_check_modem_signals(port); + } + if (port->gs.xmit_cnt) { + sx_transmit_chars(port); + } + if (!(port->gs.port.flags & SX_RX_THROTTLE)) { + sx_receive_chars(port); + } + } + } + + clear_bit(SX_BOARD_INTR_LOCK, &board->locks); + + sx_dprintk(SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n", irq, + board->irq); + func_exit(); + return IRQ_HANDLED; +} + +static void sx_pollfunc(unsigned long data) +{ + struct sx_board *board = (struct sx_board *)data; + + func_enter(); + + sx_interrupt(0, board); + + mod_timer(&board->timer, jiffies + sx_poll); + func_exit(); +} + +/* ********************************************************************** * + * Here are the routines that actually * + * interface with the generic_serial driver * + * ********************************************************************** */ + +/* Ehhm. I don't know how to fiddle with interrupts on the SX card. --REW */ +/* Hmm. Ok I figured it out. You don't. */ + +static void sx_disable_tx_interrupts(void *ptr) +{ + struct sx_port *port = ptr; + func_enter2(); + + port->gs.port.flags &= ~GS_TX_INTEN; + + func_exit(); +} + +static void sx_enable_tx_interrupts(void *ptr) +{ + struct sx_port *port = ptr; + int data_in_buffer; + func_enter2(); + + /* First transmit the characters that we're supposed to */ + sx_transmit_chars(port); + + /* The sx card will never interrupt us if we don't fill the buffer + past 25%. So we keep considering interrupts off if that's the case. */ + data_in_buffer = (sx_read_channel_byte(port, hi_txipos) - + sx_read_channel_byte(port, hi_txopos)) & 0xff; + + /* XXX Must be "HIGH_WATER" for SI card according to doc. */ + if (data_in_buffer < LOW_WATER) + port->gs.port.flags &= ~GS_TX_INTEN; + + func_exit(); +} + +static void sx_disable_rx_interrupts(void *ptr) +{ + /* struct sx_port *port = ptr; */ + func_enter(); + + func_exit(); +} + +static void sx_enable_rx_interrupts(void *ptr) +{ + /* struct sx_port *port = ptr; */ + func_enter(); + + func_exit(); +} + +/* Jeez. Isn't this simple? */ +static int sx_carrier_raised(struct tty_port *port) +{ + struct sx_port *sp = container_of(port, struct sx_port, gs.port); + return ((sx_read_channel_byte(sp, hi_ip) & IP_DCD) != 0); +} + +/* Jeez. Isn't this simple? */ +static int sx_chars_in_buffer(void *ptr) +{ + struct sx_port *port = ptr; + func_enter2(); + + func_exit(); + return ((sx_read_channel_byte(port, hi_txipos) - + sx_read_channel_byte(port, hi_txopos)) & 0xff); +} + +static void sx_shutdown_port(void *ptr) +{ + struct sx_port *port = ptr; + + func_enter(); + + port->gs.port.flags &= ~GS_ACTIVE; + if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) { + sx_setsignals(port, 0, 0); + sx_reconfigure_port(port); + } + + func_exit(); +} + +/* ********************************************************************** * + * Here are the routines that actually * + * interface with the rest of the system * + * ********************************************************************** */ + +static int sx_open(struct tty_struct *tty, struct file *filp) +{ + struct sx_port *port; + int retval, line; + unsigned long flags; + + func_enter(); + + if (!sx_initialized) { + return -EIO; + } + + line = tty->index; + sx_dprintk(SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, " + "np=%d)\n", task_pid_nr(current), line, tty, + current->signal->tty, sx_nports); + + if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports)) + return -ENODEV; + + port = &sx_ports[line]; + port->c_dcd = 0; /* Make sure that the first interrupt doesn't detect a + 1 -> 0 transition. */ + + sx_dprintk(SX_DEBUG_OPEN, "port = %p c_dcd = %d\n", port, port->c_dcd); + + spin_lock_irqsave(&port->gs.driver_lock, flags); + + tty->driver_data = port; + port->gs.port.tty = tty; + port->gs.port.count++; + spin_unlock_irqrestore(&port->gs.driver_lock, flags); + + sx_dprintk(SX_DEBUG_OPEN, "starting port\n"); + + /* + * Start up serial port + */ + retval = gs_init_port(&port->gs); + sx_dprintk(SX_DEBUG_OPEN, "done gs_init\n"); + if (retval) { + port->gs.port.count--; + return retval; + } + + port->gs.port.flags |= GS_ACTIVE; + if (port->gs.port.count <= 1) + sx_setsignals(port, 1, 1); + +#if 0 + if (sx_debug & SX_DEBUG_OPEN) + my_hd(port, sizeof(*port)); +#else + if (sx_debug & SX_DEBUG_OPEN) + my_hd_io(port->board->base + port->ch_base, sizeof(*port)); +#endif + + if (port->gs.port.count <= 1) { + if (sx_send_command(port, HS_LOPEN, -1, HS_IDLE_OPEN) != 1) { + printk(KERN_ERR "sx: Card didn't respond to LOPEN " + "command.\n"); + spin_lock_irqsave(&port->gs.driver_lock, flags); + port->gs.port.count--; + spin_unlock_irqrestore(&port->gs.driver_lock, flags); + return -EIO; + } + } + + retval = gs_block_til_ready(port, filp); + sx_dprintk(SX_DEBUG_OPEN, "Block til ready returned %d. Count=%d\n", + retval, port->gs.port.count); + + if (retval) { +/* + * Don't lower gs.port.count here because sx_close() will be called later + */ + + return retval; + } + /* tty->low_latency = 1; */ + + port->c_dcd = sx_carrier_raised(&port->gs.port); + sx_dprintk(SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd); + + func_exit(); + return 0; + +} + +static void sx_close(void *ptr) +{ + struct sx_port *port = ptr; + /* Give the port 5 seconds to close down. */ + int to = 5 * HZ; + + func_enter(); + + sx_setsignals(port, 0, 0); + sx_reconfigure_port(port); + sx_send_command(port, HS_CLOSE, 0, 0); + + while (to-- && (sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED)) + if (msleep_interruptible(10)) + break; + if (sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED) { + if (sx_send_command(port, HS_FORCE_CLOSED, -1, HS_IDLE_CLOSED) + != 1) { + printk(KERN_ERR "sx: sent the force_close command, but " + "card didn't react\n"); + } else + sx_dprintk(SX_DEBUG_CLOSE, "sent the force_close " + "command.\n"); + } + + sx_dprintk(SX_DEBUG_CLOSE, "waited %d jiffies for close. count=%d\n", + 5 * HZ - to - 1, port->gs.port.count); + + if (port->gs.port.count) { + sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n", + port->gs.port.count); + /*printk("%s SETTING port count to zero: %p count: %d\n", + __func__, port, port->gs.port.count); + port->gs.port.count = 0;*/ + } + + func_exit(); +} + +/* This is relatively thorough. But then again it is only 20 lines. */ +#define MARCHUP for (i = min; i < max; i++) +#define MARCHDOWN for (i = max - 1; i >= min; i--) +#define W0 write_sx_byte(board, i, 0x55) +#define W1 write_sx_byte(board, i, 0xaa) +#define R0 if (read_sx_byte(board, i) != 0x55) return 1 +#define R1 if (read_sx_byte(board, i) != 0xaa) return 1 + +/* This memtest takes a human-noticable time. You normally only do it + once a boot, so I guess that it is worth it. */ +static int do_memtest(struct sx_board *board, int min, int max) +{ + int i; + + /* This is a marchb. Theoretically, marchb catches much more than + simpler tests. In practise, the longer test just catches more + intermittent errors. -- REW + (For the theory behind memory testing see: + Testing Semiconductor Memories by A.J. van de Goor.) */ + MARCHUP { + W0; + } + MARCHUP { + R0; + W1; + R1; + W0; + R0; + W1; + } + MARCHUP { + R1; + W0; + W1; + } + MARCHDOWN { + R1; + W0; + W1; + W0; + } + MARCHDOWN { + R0; + W1; + W0; + } + + return 0; +} + +#undef MARCHUP +#undef MARCHDOWN +#undef W0 +#undef W1 +#undef R0 +#undef R1 + +#define MARCHUP for (i = min; i < max; i += 2) +#define MARCHDOWN for (i = max - 1; i >= min; i -= 2) +#define W0 write_sx_word(board, i, 0x55aa) +#define W1 write_sx_word(board, i, 0xaa55) +#define R0 if (read_sx_word(board, i) != 0x55aa) return 1 +#define R1 if (read_sx_word(board, i) != 0xaa55) return 1 + +#if 0 +/* This memtest takes a human-noticable time. You normally only do it + once a boot, so I guess that it is worth it. */ +static int do_memtest_w(struct sx_board *board, int min, int max) +{ + int i; + + MARCHUP { + W0; + } + MARCHUP { + R0; + W1; + R1; + W0; + R0; + W1; + } + MARCHUP { + R1; + W0; + W1; + } + MARCHDOWN { + R1; + W0; + W1; + W0; + } + MARCHDOWN { + R0; + W1; + W0; + } + + return 0; +} +#endif + +static long sx_fw_ioctl(struct file *filp, unsigned int cmd, + unsigned long arg) +{ + long rc = 0; + int __user *descr = (int __user *)arg; + int i; + static struct sx_board *board = NULL; + int nbytes, offset; + unsigned long data; + char *tmp; + + func_enter(); + + if (!capable(CAP_SYS_RAWIO)) + return -EPERM; + + tty_lock(); + + sx_dprintk(SX_DEBUG_FIRMWARE, "IOCTL %x: %lx\n", cmd, arg); + + if (!board) + board = &boards[0]; + if (board->flags & SX_BOARD_PRESENT) { + sx_dprintk(SX_DEBUG_FIRMWARE, "Board present! (%x)\n", + board->flags); + } else { + sx_dprintk(SX_DEBUG_FIRMWARE, "Board not present! (%x) all:", + board->flags); + for (i = 0; i < SX_NBOARDS; i++) + sx_dprintk(SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags); + sx_dprintk(SX_DEBUG_FIRMWARE, "\n"); + rc = -EIO; + goto out; + } + + switch (cmd) { + case SXIO_SET_BOARD: + sx_dprintk(SX_DEBUG_FIRMWARE, "set board to %ld\n", arg); + rc = -EIO; + if (arg >= SX_NBOARDS) + break; + sx_dprintk(SX_DEBUG_FIRMWARE, "not out of range\n"); + if (!(boards[arg].flags & SX_BOARD_PRESENT)) + break; + sx_dprintk(SX_DEBUG_FIRMWARE, ".. and present!\n"); + board = &boards[arg]; + rc = 0; + /* FIXME: And this does ... nothing?? */ + break; + case SXIO_GET_TYPE: + rc = -ENOENT; /* If we manage to miss one, return error. */ + if (IS_SX_BOARD(board)) + rc = SX_TYPE_SX; + if (IS_CF_BOARD(board)) + rc = SX_TYPE_CF; + if (IS_SI_BOARD(board)) + rc = SX_TYPE_SI; + if (IS_SI1_BOARD(board)) + rc = SX_TYPE_SI; + if (IS_EISA_BOARD(board)) + rc = SX_TYPE_SI; + sx_dprintk(SX_DEBUG_FIRMWARE, "returning type= %ld\n", rc); + break; + case SXIO_DO_RAMTEST: + if (sx_initialized) { /* Already initialized: better not ramtest the board. */ + rc = -EPERM; + break; + } + if (IS_SX_BOARD(board)) { + rc = do_memtest(board, 0, 0x7000); + if (!rc) + rc = do_memtest(board, 0, 0x7000); + /*if (!rc) rc = do_memtest_w (board, 0, 0x7000); */ + } else { + rc = do_memtest(board, 0, 0x7ff8); + /* if (!rc) rc = do_memtest_w (board, 0, 0x7ff8); */ + } + sx_dprintk(SX_DEBUG_FIRMWARE, + "returning memtest result= %ld\n", rc); + break; + case SXIO_DOWNLOAD: + if (sx_initialized) {/* Already initialized */ + rc = -EEXIST; + break; + } + if (!sx_reset(board)) { + rc = -EIO; + break; + } + sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); + + tmp = kmalloc(SX_CHUNK_SIZE, GFP_USER); + if (!tmp) { + rc = -ENOMEM; + break; + } + /* FIXME: check returns */ + get_user(nbytes, descr++); + get_user(offset, descr++); + get_user(data, descr++); + while (nbytes && data) { + for (i = 0; i < nbytes; i += SX_CHUNK_SIZE) { + if (copy_from_user(tmp, (char __user *)data + i, + (i + SX_CHUNK_SIZE > nbytes) ? + nbytes - i : SX_CHUNK_SIZE)) { + kfree(tmp); + rc = -EFAULT; + goto out; + } + memcpy_toio(board->base2 + offset + i, tmp, + (i + SX_CHUNK_SIZE > nbytes) ? + nbytes - i : SX_CHUNK_SIZE); + } + + get_user(nbytes, descr++); + get_user(offset, descr++); + get_user(data, descr++); + } + kfree(tmp); + sx_nports += sx_init_board(board); + rc = sx_nports; + break; + case SXIO_INIT: + if (sx_initialized) { /* Already initialized */ + rc = -EEXIST; + break; + } + /* This is not allowed until all boards are initialized... */ + for (i = 0; i < SX_NBOARDS; i++) { + if ((boards[i].flags & SX_BOARD_PRESENT) && + !(boards[i].flags & SX_BOARD_INITIALIZED)) { + rc = -EIO; + break; + } + } + for (i = 0; i < SX_NBOARDS; i++) + if (!(boards[i].flags & SX_BOARD_PRESENT)) + break; + + sx_dprintk(SX_DEBUG_FIRMWARE, "initing portstructs, %d boards, " + "%d channels, first board: %d ports\n", + i, sx_nports, boards[0].nports); + rc = sx_init_portstructs(i, sx_nports); + sx_init_drivers(); + if (rc >= 0) + sx_initialized++; + break; + case SXIO_SETDEBUG: + sx_debug = arg; + break; + case SXIO_GETDEBUG: + rc = sx_debug; + break; + case SXIO_GETGSDEBUG: + case SXIO_SETGSDEBUG: + rc = -EINVAL; + break; + case SXIO_GETNPORTS: + rc = sx_nports; + break; + default: + rc = -ENOTTY; + break; + } +out: + tty_unlock(); + func_exit(); + return rc; +} + +static int sx_break(struct tty_struct *tty, int flag) +{ + struct sx_port *port = tty->driver_data; + int rv; + + func_enter(); + tty_lock(); + + if (flag) + rv = sx_send_command(port, HS_START, -1, HS_IDLE_BREAK); + else + rv = sx_send_command(port, HS_STOP, -1, HS_IDLE_OPEN); + if (rv != 1) + printk(KERN_ERR "sx: couldn't send break (%x).\n", + read_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat))); + tty_unlock(); + func_exit(); + return 0; +} + +static int sx_tiocmget(struct tty_struct *tty) +{ + struct sx_port *port = tty->driver_data; + return sx_getsignals(port); +} + +static int sx_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct sx_port *port = tty->driver_data; + int rts = -1, dtr = -1; + + if (set & TIOCM_RTS) + rts = 1; + if (set & TIOCM_DTR) + dtr = 1; + if (clear & TIOCM_RTS) + rts = 0; + if (clear & TIOCM_DTR) + dtr = 0; + + sx_setsignals(port, dtr, rts); + sx_reconfigure_port(port); + return 0; +} + +static int sx_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + int rc; + struct sx_port *port = tty->driver_data; + void __user *argp = (void __user *)arg; + + /* func_enter2(); */ + + rc = 0; + tty_lock(); + switch (cmd) { + case TIOCGSERIAL: + rc = gs_getserial(&port->gs, argp); + break; + case TIOCSSERIAL: + rc = gs_setserial(&port->gs, argp); + break; + default: + rc = -ENOIOCTLCMD; + break; + } + tty_unlock(); + + /* func_exit(); */ + return rc; +} + +/* The throttle/unthrottle scheme for the Specialix card is different + * from other drivers and deserves some explanation. + * The Specialix hardware takes care of XON/XOFF + * and CTS/RTS flow control itself. This means that all we have to + * do when signalled by the upper tty layer to throttle/unthrottle is + * to make a note of it here. When we come to read characters from the + * rx buffers on the card (sx_receive_chars()) we look to see if the + * upper layer can accept more (as noted here in sx_rx_throt[]). + * If it can't we simply don't remove chars from the cards buffer. + * When the tty layer can accept chars, we again note that here and when + * sx_receive_chars() is called it will remove them from the cards buffer. + * The card will notice that a ports buffer has drained below some low + * water mark and will unflow control the line itself, using whatever + * flow control scheme is in use for that port. -- Simon Allen + */ + +static void sx_throttle(struct tty_struct *tty) +{ + struct sx_port *port = tty->driver_data; + + func_enter2(); + /* If the port is using any type of input flow + * control then throttle the port. + */ + if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) { + port->gs.port.flags |= SX_RX_THROTTLE; + } + func_exit(); +} + +static void sx_unthrottle(struct tty_struct *tty) +{ + struct sx_port *port = tty->driver_data; + + func_enter2(); + /* Always unthrottle even if flow control is not enabled on + * this port in case we disabled flow control while the port + * was throttled + */ + port->gs.port.flags &= ~SX_RX_THROTTLE; + func_exit(); + return; +} + +/* ********************************************************************** * + * Here are the initialization routines. * + * ********************************************************************** */ + +static int sx_init_board(struct sx_board *board) +{ + int addr; + int chans; + int type; + + func_enter(); + + /* This is preceded by downloading the download code. */ + + board->flags |= SX_BOARD_INITIALIZED; + + if (read_sx_byte(board, 0)) + /* CF boards may need this. */ + write_sx_byte(board, 0, 0); + + /* This resets the processor again, to make sure it didn't do any + foolish things while we were downloading the image */ + if (!sx_reset(board)) + return 0; + + sx_start_board(board); + udelay(10); + if (!sx_busy_wait_neq(board, 0, 0xff, 0)) { + printk(KERN_ERR "sx: Ooops. Board won't initialize.\n"); + return 0; + } + + /* Ok. So now the processor on the card is running. It gathered + some info for us... */ + sx_dprintk(SX_DEBUG_INIT, "The sxcard structure:\n"); + if (sx_debug & SX_DEBUG_INIT) + my_hd_io(board->base, 0x10); + sx_dprintk(SX_DEBUG_INIT, "the first sx_module structure:\n"); + if (sx_debug & SX_DEBUG_INIT) + my_hd_io(board->base + 0x80, 0x30); + + sx_dprintk(SX_DEBUG_INIT, "init_status: %x, %dk memory, firmware " + "V%x.%02x,\n", + read_sx_byte(board, 0), read_sx_byte(board, 1), + read_sx_byte(board, 5), read_sx_byte(board, 4)); + + if (read_sx_byte(board, 0) == 0xff) { + printk(KERN_INFO "sx: No modules found. Sorry.\n"); + board->nports = 0; + return 0; + } + + chans = 0; + + if (IS_SX_BOARD(board)) { + sx_write_board_word(board, cc_int_count, sx_maxints); + } else { + if (sx_maxints) + sx_write_board_word(board, cc_int_count, + SI_PROCESSOR_CLOCK / 8 / sx_maxints); + } + + /* grab the first module type... */ + /* board->ta_type = mod_compat_type (read_sx_byte (board, 0x80 + 0x08)); */ + board->ta_type = mod_compat_type(sx_read_module_byte(board, 0x80, + mc_chip)); + + /* XXX byteorder */ + for (addr = 0x80; addr != 0; addr = read_sx_word(board, addr) & 0x7fff){ + type = sx_read_module_byte(board, addr, mc_chip); + sx_dprintk(SX_DEBUG_INIT, "Module at %x: %d channels\n", + addr, read_sx_byte(board, addr + 2)); + + chans += sx_read_module_byte(board, addr, mc_type); + + sx_dprintk(SX_DEBUG_INIT, "module is an %s, which has %s/%s " + "panels\n", + mod_type_s(type), + pan_type_s(sx_read_module_byte(board, addr, + mc_mods) & 0xf), + pan_type_s(sx_read_module_byte(board, addr, + mc_mods) >> 4)); + + sx_dprintk(SX_DEBUG_INIT, "CD1400 versions: %x/%x, ASIC " + "version: %x\n", + sx_read_module_byte(board, addr, mc_rev1), + sx_read_module_byte(board, addr, mc_rev2), + sx_read_module_byte(board, addr, mc_mtaasic_rev)); + + /* The following combinations are illegal: It should theoretically + work, but timing problems make the bus HANG. */ + + if (mod_compat_type(type) != board->ta_type) { + printk(KERN_ERR "sx: This is an invalid " + "configuration.\nDon't mix TA/MTA/SXDC on the " + "same hostadapter.\n"); + chans = 0; + break; + } + if ((IS_EISA_BOARD(board) || + IS_SI_BOARD(board)) && + (mod_compat_type(type) == 4)) { + printk(KERN_ERR "sx: This is an invalid " + "configuration.\nDon't use SXDCs on an SI/XIO " + "adapter.\n"); + chans = 0; + break; + } +#if 0 /* Problem fixed: firmware 3.05 */ + if (IS_SX_BOARD(board) && (type == TA8)) { + /* There are some issues with the firmware and the DCD/RTS + lines. It might work if you tie them together or something. + It might also work if you get a newer sx_firmware. Therefore + this is just a warning. */ + printk(KERN_WARNING + "sx: The SX host doesn't work too well " + "with the TA8 adapters.\nSpecialix is working on it.\n"); + } +#endif + } + + if (chans) { + if (board->irq > 0) { + /* fixed irq, probably PCI */ + if (sx_irqmask & (1 << board->irq)) { /* may we use this irq? */ + if (request_irq(board->irq, sx_interrupt, + IRQF_SHARED | IRQF_DISABLED, + "sx", board)) { + printk(KERN_ERR "sx: Cannot allocate " + "irq %d.\n", board->irq); + board->irq = 0; + } + } else + board->irq = 0; + } else if (board->irq < 0 && sx_irqmask) { + /* auto-allocate irq */ + int irqnr; + int irqmask = sx_irqmask & (IS_SX_BOARD(board) ? + SX_ISA_IRQ_MASK : SI2_ISA_IRQ_MASK); + for (irqnr = 15; irqnr > 0; irqnr--) + if (irqmask & (1 << irqnr)) + if (!request_irq(irqnr, sx_interrupt, + IRQF_SHARED | IRQF_DISABLED, + "sx", board)) + break; + if (!irqnr) + printk(KERN_ERR "sx: Cannot allocate IRQ.\n"); + board->irq = irqnr; + } else + board->irq = 0; + + if (board->irq) { + /* Found a valid interrupt, start up interrupts! */ + sx_dprintk(SX_DEBUG_INIT, "Using irq %d.\n", + board->irq); + sx_start_interrupts(board); + board->poll = sx_slowpoll; + board->flags |= SX_IRQ_ALLOCATED; + } else { + /* no irq: setup board for polled operation */ + board->poll = sx_poll; + sx_dprintk(SX_DEBUG_INIT, "Using poll-interval %d.\n", + board->poll); + } + + /* The timer should be initialized anyway: That way we can + safely del_timer it when the module is unloaded. */ + setup_timer(&board->timer, sx_pollfunc, (unsigned long)board); + + if (board->poll) + mod_timer(&board->timer, jiffies + board->poll); + } else { + board->irq = 0; + } + + board->nports = chans; + sx_dprintk(SX_DEBUG_INIT, "returning %d ports.", board->nports); + + func_exit(); + return chans; +} + +static void __devinit printheader(void) +{ + static int header_printed; + + if (!header_printed) { + printk(KERN_INFO "Specialix SX driver " + "(C) 1998/1999 R.E.Wolff@BitWizard.nl\n"); + printk(KERN_INFO "sx: version " __stringify(SX_VERSION) "\n"); + header_printed = 1; + } +} + +static int __devinit probe_sx(struct sx_board *board) +{ + struct vpd_prom vpdp; + char *p; + int i; + + func_enter(); + + if (!IS_CF_BOARD(board)) { + sx_dprintk(SX_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", + board->base + SX_VPD_ROM); + + if (sx_debug & SX_DEBUG_PROBE) + my_hd_io(board->base + SX_VPD_ROM, 0x40); + + p = (char *)&vpdp; + for (i = 0; i < sizeof(struct vpd_prom); i++) + *p++ = read_sx_byte(board, SX_VPD_ROM + i * 2); + + if (sx_debug & SX_DEBUG_PROBE) + my_hd(&vpdp, 0x20); + + sx_dprintk(SX_DEBUG_PROBE, "checking identifier...\n"); + + if (strncmp(vpdp.identifier, SX_VPD_IDENT_STRING, 16) != 0) { + sx_dprintk(SX_DEBUG_PROBE, "Got non-SX identifier: " + "'%s'\n", vpdp.identifier); + return 0; + } + } + + printheader(); + + if (!IS_CF_BOARD(board)) { + printk(KERN_DEBUG "sx: Found an SX board at %lx\n", + board->hw_base); + printk(KERN_DEBUG "sx: hw_rev: %d, assembly level: %d, " + "uniq ID:%08x, ", + vpdp.hwrev, vpdp.hwass, vpdp.uniqid); + printk("Manufactured: %d/%d\n", 1970 + vpdp.myear, vpdp.mweek); + + if ((((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != + SX_PCI_UNIQUEID1) && (((vpdp.uniqid >> 24) & + SX_UNIQUEID_MASK) != SX_ISA_UNIQUEID1)) { + /* This might be a bit harsh. This was the primary + reason the SX/ISA card didn't work at first... */ + printk(KERN_ERR "sx: Hmm. Not an SX/PCI or SX/ISA " + "card. Sorry: giving up.\n"); + return (0); + } + + if (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) == + SX_ISA_UNIQUEID1) { + if (((unsigned long)board->hw_base) & 0x8000) { + printk(KERN_WARNING "sx: Warning: There may be " + "hardware problems with the card at " + "%lx.\n", board->hw_base); + printk(KERN_WARNING "sx: Read sx.txt for more " + "info.\n"); + } + } + } + + board->nports = -1; + + /* This resets the processor, and keeps it off the bus. */ + if (!sx_reset(board)) + return 0; + sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); + + func_exit(); + return 1; +} + +#if defined(CONFIG_ISA) || defined(CONFIG_EISA) + +/* Specialix probes for this card at 32k increments from 640k to 16M. + I consider machines with less than 16M unlikely nowadays, so I'm + not probing above 1Mb. Also, 0xa0000, 0xb0000, are taken by the VGA + card. 0xe0000 and 0xf0000 are taken by the BIOS. That only leaves + 0xc0000, 0xc8000, 0xd0000 and 0xd8000 . */ + +static int __devinit probe_si(struct sx_board *board) +{ + int i; + + func_enter(); + sx_dprintk(SX_DEBUG_PROBE, "Going to verify SI signature hw %lx at " + "%p.\n", board->hw_base, board->base + SI2_ISA_ID_BASE); + + if (sx_debug & SX_DEBUG_PROBE) + my_hd_io(board->base + SI2_ISA_ID_BASE, 0x8); + + if (!IS_EISA_BOARD(board)) { + if (IS_SI1_BOARD(board)) { + for (i = 0; i < 8; i++) { + write_sx_byte(board, SI2_ISA_ID_BASE + 7 - i,i); + } + } + for (i = 0; i < 8; i++) { + if ((read_sx_byte(board, SI2_ISA_ID_BASE + 7 - i) & 7) + != i) { + func_exit(); + return 0; + } + } + } + + /* Now we're pretty much convinced that there is an SI board here, + but to prevent trouble, we'd better double check that we don't + have an SI1 board when we're probing for an SI2 board.... */ + + write_sx_byte(board, SI2_ISA_ID_BASE, 0x10); + if (IS_SI1_BOARD(board)) { + /* This should be an SI1 board, which has this + location writable... */ + if (read_sx_byte(board, SI2_ISA_ID_BASE) != 0x10) { + func_exit(); + return 0; + } + } else { + /* This should be an SI2 board, which has the bottom + 3 bits non-writable... */ + if (read_sx_byte(board, SI2_ISA_ID_BASE) == 0x10) { + func_exit(); + return 0; + } + } + + /* Now we're pretty much convinced that there is an SI board here, + but to prevent trouble, we'd better double check that we don't + have an SI1 board when we're probing for an SI2 board.... */ + + write_sx_byte(board, SI2_ISA_ID_BASE, 0x10); + if (IS_SI1_BOARD(board)) { + /* This should be an SI1 board, which has this + location writable... */ + if (read_sx_byte(board, SI2_ISA_ID_BASE) != 0x10) { + func_exit(); + return 0; + } + } else { + /* This should be an SI2 board, which has the bottom + 3 bits non-writable... */ + if (read_sx_byte(board, SI2_ISA_ID_BASE) == 0x10) { + func_exit(); + return 0; + } + } + + printheader(); + + printk(KERN_DEBUG "sx: Found an SI board at %lx\n", board->hw_base); + /* Compared to the SX boards, it is a complete guess as to what + this card is up to... */ + + board->nports = -1; + + /* This resets the processor, and keeps it off the bus. */ + if (!sx_reset(board)) + return 0; + sx_dprintk(SX_DEBUG_INIT, "reset the board...\n"); + + func_exit(); + return 1; +} +#endif + +static const struct tty_operations sx_ops = { + .break_ctl = sx_break, + .open = sx_open, + .close = gs_close, + .write = gs_write, + .put_char = gs_put_char, + .flush_chars = gs_flush_chars, + .write_room = gs_write_room, + .chars_in_buffer = gs_chars_in_buffer, + .flush_buffer = gs_flush_buffer, + .ioctl = sx_ioctl, + .throttle = sx_throttle, + .unthrottle = sx_unthrottle, + .set_termios = gs_set_termios, + .stop = gs_stop, + .start = gs_start, + .hangup = gs_hangup, + .tiocmget = sx_tiocmget, + .tiocmset = sx_tiocmset, +}; + +static const struct tty_port_operations sx_port_ops = { + .carrier_raised = sx_carrier_raised, +}; + +static int sx_init_drivers(void) +{ + int error; + + func_enter(); + + sx_driver = alloc_tty_driver(sx_nports); + if (!sx_driver) + return 1; + sx_driver->owner = THIS_MODULE; + sx_driver->driver_name = "specialix_sx"; + sx_driver->name = "ttyX"; + sx_driver->major = SX_NORMAL_MAJOR; + sx_driver->type = TTY_DRIVER_TYPE_SERIAL; + sx_driver->subtype = SERIAL_TYPE_NORMAL; + sx_driver->init_termios = tty_std_termios; + sx_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; + sx_driver->init_termios.c_ispeed = 9600; + sx_driver->init_termios.c_ospeed = 9600; + sx_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(sx_driver, &sx_ops); + + if ((error = tty_register_driver(sx_driver))) { + put_tty_driver(sx_driver); + printk(KERN_ERR "sx: Couldn't register sx driver, error = %d\n", + error); + return 1; + } + func_exit(); + return 0; +} + +static int sx_init_portstructs(int nboards, int nports) +{ + struct sx_board *board; + struct sx_port *port; + int i, j; + int addr, chans; + int portno; + + func_enter(); + + /* Many drivers statically allocate the maximum number of ports + There is no reason not to allocate them dynamically. + Is there? -- REW */ + sx_ports = kcalloc(nports, sizeof(struct sx_port), GFP_KERNEL); + if (!sx_ports) + return -ENOMEM; + + port = sx_ports; + for (i = 0; i < nboards; i++) { + board = &boards[i]; + board->ports = port; + for (j = 0; j < boards[i].nports; j++) { + sx_dprintk(SX_DEBUG_INIT, "initing port %d\n", j); + tty_port_init(&port->gs.port); + port->gs.port.ops = &sx_port_ops; + port->gs.magic = SX_MAGIC; + port->gs.close_delay = HZ / 2; + port->gs.closing_wait = 30 * HZ; + port->board = board; + port->gs.rd = &sx_real_driver; +#ifdef NEW_WRITE_LOCKING + port->gs.port_write_mutex = MUTEX; +#endif + spin_lock_init(&port->gs.driver_lock); + /* + * Initializing wait queue + */ + port++; + } + } + + port = sx_ports; + portno = 0; + for (i = 0; i < nboards; i++) { + board = &boards[i]; + board->port_base = portno; + /* Possibly the configuration was rejected. */ + sx_dprintk(SX_DEBUG_PROBE, "Board has %d channels\n", + board->nports); + if (board->nports <= 0) + continue; + /* XXX byteorder ?? */ + for (addr = 0x80; addr != 0; + addr = read_sx_word(board, addr) & 0x7fff) { + chans = sx_read_module_byte(board, addr, mc_type); + sx_dprintk(SX_DEBUG_PROBE, "Module at %x: %d " + "channels\n", addr, chans); + sx_dprintk(SX_DEBUG_PROBE, "Port at"); + for (j = 0; j < chans; j++) { + /* The "sx-way" is the way it SHOULD be done. + That way in the future, the firmware may for + example pack the structures a bit more + efficient. Neil tells me it isn't going to + happen anytime soon though. */ + if (IS_SX_BOARD(board)) + port->ch_base = sx_read_module_word( + board, addr + j * 2, + mc_chan_pointer); + else + port->ch_base = addr + 0x100 + 0x300 *j; + + sx_dprintk(SX_DEBUG_PROBE, " %x", + port->ch_base); + port->line = portno++; + port++; + } + sx_dprintk(SX_DEBUG_PROBE, "\n"); + } + /* This has to be done earlier. */ + /* board->flags |= SX_BOARD_INITIALIZED; */ + } + + func_exit(); + return 0; +} + +static unsigned int sx_find_free_board(void) +{ + unsigned int i; + + for (i = 0; i < SX_NBOARDS; i++) + if (!(boards[i].flags & SX_BOARD_PRESENT)) + break; + + return i; +} + +static void __exit sx_release_drivers(void) +{ + func_enter(); + tty_unregister_driver(sx_driver); + put_tty_driver(sx_driver); + func_exit(); +} + +static void __devexit sx_remove_card(struct sx_board *board, + struct pci_dev *pdev) +{ + if (board->flags & SX_BOARD_INITIALIZED) { + /* The board should stop messing with us. (actually I mean the + interrupt) */ + sx_reset(board); + if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED)) + free_irq(board->irq, board); + + /* It is safe/allowed to del_timer a non-active timer */ + del_timer(&board->timer); + if (pdev) { +#ifdef CONFIG_PCI + iounmap(board->base2); + pci_release_region(pdev, IS_CF_BOARD(board) ? 3 : 2); +#endif + } else { + iounmap(board->base); + release_region(board->hw_base, board->hw_len); + } + + board->flags &= ~(SX_BOARD_INITIALIZED | SX_BOARD_PRESENT); + } +} + +#ifdef CONFIG_EISA + +static int __devinit sx_eisa_probe(struct device *dev) +{ + struct eisa_device *edev = to_eisa_device(dev); + struct sx_board *board; + unsigned long eisa_slot = edev->base_addr; + unsigned int i; + int retval = -EIO; + + mutex_lock(&sx_boards_lock); + i = sx_find_free_board(); + if (i == SX_NBOARDS) { + mutex_unlock(&sx_boards_lock); + goto err; + } + board = &boards[i]; + board->flags |= SX_BOARD_PRESENT; + mutex_unlock(&sx_boards_lock); + + dev_info(dev, "XIO : Signature found in EISA slot %lu, " + "Product %d Rev %d (REPORT THIS TO LKLM)\n", + eisa_slot >> 12, + inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 2), + inb(eisa_slot + EISA_VENDOR_ID_OFFSET + 3)); + + board->eisa_base = eisa_slot; + board->flags &= ~SX_BOARD_TYPE; + board->flags |= SI_EISA_BOARD; + + board->hw_base = ((inb(eisa_slot + 0xc01) << 8) + + inb(eisa_slot + 0xc00)) << 16; + board->hw_len = SI2_EISA_WINDOW_LEN; + if (!request_region(board->hw_base, board->hw_len, "sx")) { + dev_err(dev, "can't request region\n"); + goto err_flag; + } + board->base2 = + board->base = ioremap_nocache(board->hw_base, SI2_EISA_WINDOW_LEN); + if (!board->base) { + dev_err(dev, "can't remap memory\n"); + goto err_reg; + } + + sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base); + sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base); + board->irq = inb(eisa_slot + 0xc02) >> 4; + sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq); + + if (!probe_si(board)) + goto err_unmap; + + dev_set_drvdata(dev, board); + + return 0; +err_unmap: + iounmap(board->base); +err_reg: + release_region(board->hw_base, board->hw_len); +err_flag: + board->flags &= ~SX_BOARD_PRESENT; +err: + return retval; +} + +static int __devexit sx_eisa_remove(struct device *dev) +{ + struct sx_board *board = dev_get_drvdata(dev); + + sx_remove_card(board, NULL); + + return 0; +} + +static struct eisa_device_id sx_eisa_tbl[] = { + { "SLX" }, + { "" } +}; + +MODULE_DEVICE_TABLE(eisa, sx_eisa_tbl); + +static struct eisa_driver sx_eisadriver = { + .id_table = sx_eisa_tbl, + .driver = { + .name = "sx", + .probe = sx_eisa_probe, + .remove = __devexit_p(sx_eisa_remove), + } +}; + +#endif + +#ifdef CONFIG_PCI + /******************************************************** + * Setting bit 17 in the CNTRL register of the PLX 9050 * + * chip forces a retry on writes while a read is pending.* + * This is to prevent the card locking up on Intel Xeon * + * multiprocessor systems with the NX chipset. -- NV * + ********************************************************/ + +/* Newer cards are produced with this bit set from the configuration + EEprom. As the bit is read/write for the CPU, we can fix it here, + if we detect that it isn't set correctly. -- REW */ + +static void __devinit fix_sx_pci(struct pci_dev *pdev, struct sx_board *board) +{ + unsigned int hwbase; + void __iomem *rebase; + unsigned int t; + +#define CNTRL_REG_OFFSET 0x50 +#define CNTRL_REG_GOODVALUE 0x18260000 + + pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); + hwbase &= PCI_BASE_ADDRESS_MEM_MASK; + rebase = ioremap_nocache(hwbase, 0x80); + t = readl(rebase + CNTRL_REG_OFFSET); + if (t != CNTRL_REG_GOODVALUE) { + printk(KERN_DEBUG "sx: performing cntrl reg fix: %08x -> " + "%08x\n", t, CNTRL_REG_GOODVALUE); + writel(CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); + } + iounmap(rebase); +} +#endif + +static int __devinit sx_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ +#ifdef CONFIG_PCI + struct sx_board *board; + unsigned int i, reg; + int retval = -EIO; + + mutex_lock(&sx_boards_lock); + i = sx_find_free_board(); + if (i == SX_NBOARDS) { + mutex_unlock(&sx_boards_lock); + goto err; + } + board = &boards[i]; + board->flags |= SX_BOARD_PRESENT; + mutex_unlock(&sx_boards_lock); + + retval = pci_enable_device(pdev); + if (retval) + goto err_flag; + + board->flags &= ~SX_BOARD_TYPE; + board->flags |= (pdev->subsystem_vendor == 0x200) ? SX_PCI_BOARD : + SX_CFPCI_BOARD; + + /* CF boards use base address 3.... */ + reg = IS_CF_BOARD(board) ? 3 : 2; + retval = pci_request_region(pdev, reg, "sx"); + if (retval) { + dev_err(&pdev->dev, "can't request region\n"); + goto err_flag; + } + board->hw_base = pci_resource_start(pdev, reg); + board->base2 = + board->base = ioremap_nocache(board->hw_base, WINDOW_LEN(board)); + if (!board->base) { + dev_err(&pdev->dev, "ioremap failed\n"); + goto err_reg; + } + + /* Most of the stuff on the CF board is offset by 0x18000 .... */ + if (IS_CF_BOARD(board)) + board->base += 0x18000; + + board->irq = pdev->irq; + + dev_info(&pdev->dev, "Got a specialix card: %p(%d) %x.\n", board->base, + board->irq, board->flags); + + if (!probe_sx(board)) { + retval = -EIO; + goto err_unmap; + } + + fix_sx_pci(pdev, board); + + pci_set_drvdata(pdev, board); + + return 0; +err_unmap: + iounmap(board->base2); +err_reg: + pci_release_region(pdev, reg); +err_flag: + board->flags &= ~SX_BOARD_PRESENT; +err: + return retval; +#else + return -ENODEV; +#endif +} + +static void __devexit sx_pci_remove(struct pci_dev *pdev) +{ + struct sx_board *board = pci_get_drvdata(pdev); + + sx_remove_card(board, pdev); +} + +/* Specialix has a whole bunch of cards with 0x2000 as the device ID. They say + its because the standard requires it. So check for SUBVENDOR_ID. */ +static struct pci_device_id sx_pci_tbl[] = { + { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, + .subvendor = PCI_ANY_ID, .subdevice = 0x0200 }, + { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, + .subvendor = PCI_ANY_ID, .subdevice = 0x0300 }, + { 0 } +}; + +MODULE_DEVICE_TABLE(pci, sx_pci_tbl); + +static struct pci_driver sx_pcidriver = { + .name = "sx", + .id_table = sx_pci_tbl, + .probe = sx_pci_probe, + .remove = __devexit_p(sx_pci_remove) +}; + +static int __init sx_init(void) +{ +#ifdef CONFIG_EISA + int retval1; +#endif +#ifdef CONFIG_ISA + struct sx_board *board; + unsigned int i; +#endif + unsigned int found = 0; + int retval; + + func_enter(); + sx_dprintk(SX_DEBUG_INIT, "Initing sx module... (sx_debug=%d)\n", + sx_debug); + if (abs((long)(&sx_debug) - sx_debug) < 0x10000) { + printk(KERN_WARNING "sx: sx_debug is an address, instead of a " + "value. Assuming -1.\n(%p)\n", &sx_debug); + sx_debug = -1; + } + + if (misc_register(&sx_fw_device) < 0) { + printk(KERN_ERR "SX: Unable to register firmware loader " + "driver.\n"); + return -EIO; + } +#ifdef CONFIG_ISA + for (i = 0; i < NR_SX_ADDRS; i++) { + board = &boards[found]; + board->hw_base = sx_probe_addrs[i]; + board->hw_len = SX_WINDOW_LEN; + if (!request_region(board->hw_base, board->hw_len, "sx")) + continue; + board->base2 = + board->base = ioremap_nocache(board->hw_base, board->hw_len); + if (!board->base) + goto err_sx_reg; + board->flags &= ~SX_BOARD_TYPE; + board->flags |= SX_ISA_BOARD; + board->irq = sx_irqmask ? -1 : 0; + + if (probe_sx(board)) { + board->flags |= SX_BOARD_PRESENT; + found++; + } else { + iounmap(board->base); +err_sx_reg: + release_region(board->hw_base, board->hw_len); + } + } + + for (i = 0; i < NR_SI_ADDRS; i++) { + board = &boards[found]; + board->hw_base = si_probe_addrs[i]; + board->hw_len = SI2_ISA_WINDOW_LEN; + if (!request_region(board->hw_base, board->hw_len, "sx")) + continue; + board->base2 = + board->base = ioremap_nocache(board->hw_base, board->hw_len); + if (!board->base) + goto err_si_reg; + board->flags &= ~SX_BOARD_TYPE; + board->flags |= SI_ISA_BOARD; + board->irq = sx_irqmask ? -1 : 0; + + if (probe_si(board)) { + board->flags |= SX_BOARD_PRESENT; + found++; + } else { + iounmap(board->base); +err_si_reg: + release_region(board->hw_base, board->hw_len); + } + } + for (i = 0; i < NR_SI1_ADDRS; i++) { + board = &boards[found]; + board->hw_base = si1_probe_addrs[i]; + board->hw_len = SI1_ISA_WINDOW_LEN; + if (!request_region(board->hw_base, board->hw_len, "sx")) + continue; + board->base2 = + board->base = ioremap_nocache(board->hw_base, board->hw_len); + if (!board->base) + goto err_si1_reg; + board->flags &= ~SX_BOARD_TYPE; + board->flags |= SI1_ISA_BOARD; + board->irq = sx_irqmask ? -1 : 0; + + if (probe_si(board)) { + board->flags |= SX_BOARD_PRESENT; + found++; + } else { + iounmap(board->base); +err_si1_reg: + release_region(board->hw_base, board->hw_len); + } + } +#endif +#ifdef CONFIG_EISA + retval1 = eisa_driver_register(&sx_eisadriver); +#endif + retval = pci_register_driver(&sx_pcidriver); + + if (found) { + printk(KERN_INFO "sx: total of %d boards detected.\n", found); + retval = 0; + } else if (retval) { +#ifdef CONFIG_EISA + retval = retval1; + if (retval1) +#endif + misc_deregister(&sx_fw_device); + } + + func_exit(); + return retval; +} + +static void __exit sx_exit(void) +{ + int i; + + func_enter(); +#ifdef CONFIG_EISA + eisa_driver_unregister(&sx_eisadriver); +#endif + pci_unregister_driver(&sx_pcidriver); + + for (i = 0; i < SX_NBOARDS; i++) + sx_remove_card(&boards[i], NULL); + + if (misc_deregister(&sx_fw_device) < 0) { + printk(KERN_INFO "sx: couldn't deregister firmware loader " + "device\n"); + } + sx_dprintk(SX_DEBUG_CLEANUP, "Cleaning up drivers (%d)\n", + sx_initialized); + if (sx_initialized) + sx_release_drivers(); + + kfree(sx_ports); + func_exit(); +} + +module_init(sx_init); +module_exit(sx_exit); diff --git a/drivers/staging/generic_serial/sx.h b/drivers/staging/generic_serial/sx.h new file mode 100644 index 000000000000..87c2defdead7 --- /dev/null +++ b/drivers/staging/generic_serial/sx.h @@ -0,0 +1,201 @@ + +/* + * sx.h + * + * Copyright (C) 1998/1999 R.E.Wolff@BitWizard.nl + * + * SX serial driver. + * -- Supports SI, XIO and SX host cards. + * -- Supports TAs, MTAs and SXDCs. + * + * Version 1.3 -- March, 1999. + * + */ + +#define SX_NBOARDS 4 +#define SX_PORTSPERBOARD 32 +#define SX_NPORTS (SX_NBOARDS * SX_PORTSPERBOARD) + +#ifdef __KERNEL__ + +#define SX_MAGIC 0x12345678 + +struct sx_port { + struct gs_port gs; + struct wait_queue *shutdown_wait; + int ch_base; + int c_dcd; + struct sx_board *board; + int line; + unsigned long locks; +}; + +struct sx_board { + int magic; + void __iomem *base; + void __iomem *base2; + unsigned long hw_base; + resource_size_t hw_len; + int eisa_base; + int port_base; /* Number of the first port */ + struct sx_port *ports; + int nports; + int flags; + int irq; + int poll; + int ta_type; + struct timer_list timer; + unsigned long locks; +}; + +struct vpd_prom { + unsigned short id; + char hwrev; + char hwass; + int uniqid; + char myear; + char mweek; + char hw_feature[5]; + char oem_id; + char identifier[16]; +}; + +#ifndef MOD_RS232DB25MALE +#define MOD_RS232DB25MALE 0x0a +#endif + +#define SI_ISA_BOARD 0x00000001 +#define SX_ISA_BOARD 0x00000002 +#define SX_PCI_BOARD 0x00000004 +#define SX_CFPCI_BOARD 0x00000008 +#define SX_CFISA_BOARD 0x00000010 +#define SI_EISA_BOARD 0x00000020 +#define SI1_ISA_BOARD 0x00000040 + +#define SX_BOARD_PRESENT 0x00001000 +#define SX_BOARD_INITIALIZED 0x00002000 +#define SX_IRQ_ALLOCATED 0x00004000 + +#define SX_BOARD_TYPE 0x000000ff + +#define IS_SX_BOARD(board) (board->flags & (SX_PCI_BOARD | SX_CFPCI_BOARD | \ + SX_ISA_BOARD | SX_CFISA_BOARD)) + +#define IS_SI_BOARD(board) (board->flags & SI_ISA_BOARD) +#define IS_SI1_BOARD(board) (board->flags & SI1_ISA_BOARD) + +#define IS_EISA_BOARD(board) (board->flags & SI_EISA_BOARD) + +#define IS_CF_BOARD(board) (board->flags & (SX_CFISA_BOARD | SX_CFPCI_BOARD)) + +/* The SI processor clock is required to calculate the cc_int_count register + value for the SI cards. */ +#define SI_PROCESSOR_CLOCK 25000000 + + +/* port flags */ +/* Make sure these don't clash with gs flags or async flags */ +#define SX_RX_THROTTLE 0x0000001 + + + +#define SX_PORT_TRANSMIT_LOCK 0 +#define SX_BOARD_INTR_LOCK 0 + + + +/* Debug flags. Add these together to get more debug info. */ + +#define SX_DEBUG_OPEN 0x00000001 +#define SX_DEBUG_SETTING 0x00000002 +#define SX_DEBUG_FLOW 0x00000004 +#define SX_DEBUG_MODEMSIGNALS 0x00000008 +#define SX_DEBUG_TERMIOS 0x00000010 +#define SX_DEBUG_TRANSMIT 0x00000020 +#define SX_DEBUG_RECEIVE 0x00000040 +#define SX_DEBUG_INTERRUPTS 0x00000080 +#define SX_DEBUG_PROBE 0x00000100 +#define SX_DEBUG_INIT 0x00000200 +#define SX_DEBUG_CLEANUP 0x00000400 +#define SX_DEBUG_CLOSE 0x00000800 +#define SX_DEBUG_FIRMWARE 0x00001000 +#define SX_DEBUG_MEMTEST 0x00002000 + +#define SX_DEBUG_ALL 0xffffffff + + +#define O_OTHER(tty) \ + ((O_OLCUC(tty)) ||\ + (O_ONLCR(tty)) ||\ + (O_OCRNL(tty)) ||\ + (O_ONOCR(tty)) ||\ + (O_ONLRET(tty)) ||\ + (O_OFILL(tty)) ||\ + (O_OFDEL(tty)) ||\ + (O_NLDLY(tty)) ||\ + (O_CRDLY(tty)) ||\ + (O_TABDLY(tty)) ||\ + (O_BSDLY(tty)) ||\ + (O_VTDLY(tty)) ||\ + (O_FFDLY(tty))) + +/* Same for input. */ +#define I_OTHER(tty) \ + ((I_INLCR(tty)) ||\ + (I_IGNCR(tty)) ||\ + (I_ICRNL(tty)) ||\ + (I_IUCLC(tty)) ||\ + (L_ISIG(tty))) + +#define MOD_TA ( TA>>4) +#define MOD_MTA (MTA_CD1400>>4) +#define MOD_SXDC ( SXDC>>4) + + +/* We copy the download code over to the card in chunks of ... bytes */ +#define SX_CHUNK_SIZE 128 + +#endif /* __KERNEL__ */ + + + +/* Specialix document 6210046-11 page 3 */ +#define SPX(X) (('S'<<24) | ('P' << 16) | (X)) + +/* Specialix-Linux specific IOCTLS. */ +#define SPXL(X) (SPX(('L' << 8) | (X))) + + +#define SXIO_SET_BOARD SPXL(0x01) +#define SXIO_GET_TYPE SPXL(0x02) +#define SXIO_DOWNLOAD SPXL(0x03) +#define SXIO_INIT SPXL(0x04) +#define SXIO_SETDEBUG SPXL(0x05) +#define SXIO_GETDEBUG SPXL(0x06) +#define SXIO_DO_RAMTEST SPXL(0x07) +#define SXIO_SETGSDEBUG SPXL(0x08) +#define SXIO_GETGSDEBUG SPXL(0x09) +#define SXIO_GETNPORTS SPXL(0x0a) + + +#ifndef SXCTL_MISC_MINOR +/* Allow others to gather this into "major.h" or something like that */ +#define SXCTL_MISC_MINOR 167 +#endif + +#ifndef SX_NORMAL_MAJOR +/* This allows overriding on the compiler commandline, or in a "major.h" + include or something like that */ +#define SX_NORMAL_MAJOR 32 +#define SX_CALLOUT_MAJOR 33 +#endif + + +#define SX_TYPE_SX 0x01 +#define SX_TYPE_SI 0x02 +#define SX_TYPE_CF 0x03 + + +#define WINDOW_LEN(board) (IS_CF_BOARD(board)?0x20000:SX_WINDOW_LEN) +/* Need a #define for ^^^^^^^ !!! */ + diff --git a/drivers/staging/generic_serial/sxboards.h b/drivers/staging/generic_serial/sxboards.h new file mode 100644 index 000000000000..427927dc7dbf --- /dev/null +++ b/drivers/staging/generic_serial/sxboards.h @@ -0,0 +1,206 @@ +/************************************************************************/ +/* */ +/* Title : SX/SI/XIO Board Hardware Definitions */ +/* */ +/* Author : N.P.Vassallo */ +/* */ +/* Creation : 16th March 1998 */ +/* */ +/* Version : 3.0.0 */ +/* */ +/* Copyright : (c) Specialix International Ltd. 1998 */ +/* */ +/* Description : Prototypes, structures and definitions */ +/* describing the SX/SI/XIO board hardware */ +/* */ +/************************************************************************/ + +/* History... + +3.0.0 16/03/98 NPV Creation. + +*/ + +#ifndef _sxboards_h /* If SXBOARDS.H not already defined */ +#define _sxboards_h 1 + +/***************************************************************************** +******************************* ****************************** +******************************* Board Types ****************************** +******************************* ****************************** +*****************************************************************************/ + +/* BUS types... */ +#define BUS_ISA 0 +#define BUS_MCA 1 +#define BUS_EISA 2 +#define BUS_PCI 3 + +/* Board phases... */ +#define SI1_Z280 1 +#define SI2_Z280 2 +#define SI3_T225 3 + +/* Board types... */ +#define CARD_TYPE(bus,phase) (bus<<4|phase) +#define CARD_BUS(type) ((type>>4)&0xF) +#define CARD_PHASE(type) (type&0xF) + +#define TYPE_SI1_ISA CARD_TYPE(BUS_ISA,SI1_Z280) +#define TYPE_SI2_ISA CARD_TYPE(BUS_ISA,SI2_Z280) +#define TYPE_SI2_EISA CARD_TYPE(BUS_EISA,SI2_Z280) +#define TYPE_SI2_PCI CARD_TYPE(BUS_PCI,SI2_Z280) + +#define TYPE_SX_ISA CARD_TYPE(BUS_ISA,SI3_T225) +#define TYPE_SX_PCI CARD_TYPE(BUS_PCI,SI3_T225) +/***************************************************************************** +****************************** ****************************** +****************************** Phase 1 Z280 ****************************** +****************************** ****************************** +*****************************************************************************/ + +/* ISA board details... */ +#define SI1_ISA_WINDOW_LEN 0x10000 /* 64 Kbyte shared memory window */ +//#define SI1_ISA_MEMORY_LEN 0x8000 /* Usable memory - unused define*/ +//#define SI1_ISA_ADDR_LOW 0x0A0000 /* Lowest address = 640 Kbyte */ +//#define SI1_ISA_ADDR_HIGH 0xFF8000 /* Highest address = 16Mbyte - 32Kbyte */ +//#define SI2_ISA_ADDR_STEP SI2_ISA_WINDOW_LEN/* ISA board address step */ +//#define SI2_ISA_IRQ_MASK 0x9800 /* IRQs 15,12,11 */ + +/* ISA board, register definitions... */ +//#define SI2_ISA_ID_BASE 0x7FF8 /* READ: Board ID string */ +#define SI1_ISA_RESET 0x8000 /* WRITE: Host Reset */ +#define SI1_ISA_RESET_CLEAR 0xc000 /* WRITE: Host Reset clear*/ +#define SI1_ISA_WAIT 0x9000 /* WRITE: Host wait */ +#define SI1_ISA_WAIT_CLEAR 0xd000 /* WRITE: Host wait clear */ +#define SI1_ISA_INTCL 0xa000 /* WRITE: Host Reset */ +#define SI1_ISA_INTCL_CLEAR 0xe000 /* WRITE: Host Reset */ + + +/***************************************************************************** +****************************** ****************************** +****************************** Phase 2 Z280 ****************************** +****************************** ****************************** +*****************************************************************************/ + +/* ISA board details... */ +#define SI2_ISA_WINDOW_LEN 0x8000 /* 32 Kbyte shared memory window */ +#define SI2_ISA_MEMORY_LEN 0x7FF8 /* Usable memory */ +#define SI2_ISA_ADDR_LOW 0x0A0000 /* Lowest address = 640 Kbyte */ +#define SI2_ISA_ADDR_HIGH 0xFF8000 /* Highest address = 16Mbyte - 32Kbyte */ +#define SI2_ISA_ADDR_STEP SI2_ISA_WINDOW_LEN/* ISA board address step */ +#define SI2_ISA_IRQ_MASK 0x9800 /* IRQs 15,12,11 */ + +/* ISA board, register definitions... */ +#define SI2_ISA_ID_BASE 0x7FF8 /* READ: Board ID string */ +#define SI2_ISA_RESET SI2_ISA_ID_BASE /* WRITE: Host Reset */ +#define SI2_ISA_IRQ11 (SI2_ISA_ID_BASE+1) /* WRITE: Set IRQ11 */ +#define SI2_ISA_IRQ12 (SI2_ISA_ID_BASE+2) /* WRITE: Set IRQ12 */ +#define SI2_ISA_IRQ15 (SI2_ISA_ID_BASE+3) /* WRITE: Set IRQ15 */ +#define SI2_ISA_IRQSET (SI2_ISA_ID_BASE+4) /* WRITE: Set Host Interrupt */ +#define SI2_ISA_INTCLEAR (SI2_ISA_ID_BASE+5) /* WRITE: Enable Host Interrupt */ + +#define SI2_ISA_IRQ11_SET 0x10 +#define SI2_ISA_IRQ11_CLEAR 0x00 +#define SI2_ISA_IRQ12_SET 0x10 +#define SI2_ISA_IRQ12_CLEAR 0x00 +#define SI2_ISA_IRQ15_SET 0x10 +#define SI2_ISA_IRQ15_CLEAR 0x00 +#define SI2_ISA_INTCLEAR_SET 0x10 +#define SI2_ISA_INTCLEAR_CLEAR 0x00 +#define SI2_ISA_IRQSET_CLEAR 0x10 +#define SI2_ISA_IRQSET_SET 0x00 +#define SI2_ISA_RESET_SET 0x00 +#define SI2_ISA_RESET_CLEAR 0x10 + +/* PCI board details... */ +#define SI2_PCI_WINDOW_LEN 0x100000 /* 1 Mbyte memory window */ + +/* PCI board register definitions... */ +#define SI2_PCI_SET_IRQ 0x40001 /* Set Host Interrupt */ +#define SI2_PCI_RESET 0xC0001 /* Host Reset */ + +/***************************************************************************** +****************************** ****************************** +****************************** Phase 3 T225 ****************************** +****************************** ****************************** +*****************************************************************************/ + +/* General board details... */ +#define SX_WINDOW_LEN 64*1024 /* 64 Kbyte memory window */ + +/* ISA board details... */ +#define SX_ISA_ADDR_LOW 0x0A0000 /* Lowest address = 640 Kbyte */ +#define SX_ISA_ADDR_HIGH 0xFF8000 /* Highest address = 16Mbyte - 32Kbyte */ +#define SX_ISA_ADDR_STEP SX_WINDOW_LEN /* ISA board address step */ +#define SX_ISA_IRQ_MASK 0x9E00 /* IRQs 15,12,11,10,9 */ + +/* Hardware register definitions... */ +#define SX_EVENT_STATUS 0x7800 /* READ: T225 Event Status */ +#define SX_EVENT_STROBE 0x7800 /* WRITE: T225 Event Strobe */ +#define SX_EVENT_ENABLE 0x7880 /* WRITE: T225 Event Enable */ +#define SX_VPD_ROM 0x7C00 /* READ: Vital Product Data ROM */ +#define SX_CONFIG 0x7C00 /* WRITE: Host Configuration Register */ +#define SX_IRQ_STATUS 0x7C80 /* READ: Host Interrupt Status */ +#define SX_SET_IRQ 0x7C80 /* WRITE: Set Host Interrupt */ +#define SX_RESET_STATUS 0x7D00 /* READ: Host Reset Status */ +#define SX_RESET 0x7D00 /* WRITE: Host Reset */ +#define SX_RESET_IRQ 0x7D80 /* WRITE: Reset Host Interrupt */ + +/* SX_VPD_ROM definitions... */ +#define SX_VPD_SLX_ID1 0x00 +#define SX_VPD_SLX_ID2 0x01 +#define SX_VPD_HW_REV 0x02 +#define SX_VPD_HW_ASSEM 0x03 +#define SX_VPD_UNIQUEID4 0x04 +#define SX_VPD_UNIQUEID3 0x05 +#define SX_VPD_UNIQUEID2 0x06 +#define SX_VPD_UNIQUEID1 0x07 +#define SX_VPD_MANU_YEAR 0x08 +#define SX_VPD_MANU_WEEK 0x09 +#define SX_VPD_IDENT 0x10 +#define SX_VPD_IDENT_STRING "JET HOST BY KEV#" + +/* SX unique identifiers... */ +#define SX_UNIQUEID_MASK 0xF0 +#define SX_ISA_UNIQUEID1 0x20 +#define SX_PCI_UNIQUEID1 0x50 + +/* SX_CONFIG definitions... */ +#define SX_CONF_BUSEN 0x02 /* Enable T225 memory and I/O */ +#define SX_CONF_HOSTIRQ 0x04 /* Enable board to host interrupt */ + +/* SX bootstrap... */ +#define SX_BOOTSTRAP "\x28\x20\x21\x02\x60\x0a" +#define SX_BOOTSTRAP_SIZE 6 +#define SX_BOOTSTRAP_ADDR (0x8000-SX_BOOTSTRAP_SIZE) + +/***************************************************************************** +********************************** ********************************** +********************************** EISA ********************************** +********************************** ********************************** +*****************************************************************************/ + +#define SI2_EISA_OFF 0x42 +#define SI2_EISA_VAL 0x01 +#define SI2_EISA_WINDOW_LEN 0x10000 + +/***************************************************************************** +*********************************** ********************************** +*********************************** PCI ********************************** +*********************************** ********************************** +*****************************************************************************/ + +/* General definitions... */ + +#define SPX_VENDOR_ID 0x11CB /* Assigned by the PCI SIG */ +#define SPX_DEVICE_ID 0x4000 /* SI/XIO boards */ +#define SPX_PLXDEVICE_ID 0x2000 /* SX boards */ + +#define SPX_SUB_VENDOR_ID SPX_VENDOR_ID /* Same as vendor id */ +#define SI2_SUB_SYS_ID 0x400 /* Phase 2 (Z280) board */ +#define SX_SUB_SYS_ID 0x200 /* Phase 3 (t225) board */ + +#endif /*_sxboards_h */ + +/* End of SXBOARDS.H */ diff --git a/drivers/staging/generic_serial/sxwindow.h b/drivers/staging/generic_serial/sxwindow.h new file mode 100644 index 000000000000..cf01b662aefc --- /dev/null +++ b/drivers/staging/generic_serial/sxwindow.h @@ -0,0 +1,393 @@ +/************************************************************************/ +/* */ +/* Title : SX Shared Memory Window Structure */ +/* */ +/* Author : N.P.Vassallo */ +/* */ +/* Creation : 16th March 1998 */ +/* */ +/* Version : 3.0.0 */ +/* */ +/* Copyright : (c) Specialix International Ltd. 1998 */ +/* */ +/* Description : Prototypes, structures and definitions */ +/* describing the SX/SI/XIO cards shared */ +/* memory window structure: */ +/* SXCARD */ +/* SXMODULE */ +/* SXCHANNEL */ +/* */ +/************************************************************************/ + +/* History... + +3.0.0 16/03/98 NPV Creation. (based on STRUCT.H) + +*/ + +#ifndef _sxwindow_h /* If SXWINDOW.H not already defined */ +#define _sxwindow_h 1 + +/***************************************************************************** +*************************** *************************** +*************************** Common Definitions *************************** +*************************** *************************** +*****************************************************************************/ + +typedef struct _SXCARD *PSXCARD; /* SXCARD structure pointer */ +typedef struct _SXMODULE *PMOD; /* SXMODULE structure pointer */ +typedef struct _SXCHANNEL *PCHAN; /* SXCHANNEL structure pointer */ + +/***************************************************************************** +********************************* ********************************* +********************************* SXCARD ********************************* +********************************* ********************************* +*****************************************************************************/ + +typedef struct _SXCARD +{ + BYTE cc_init_status; /* 0x00 Initialisation status */ + BYTE cc_mem_size; /* 0x01 Size of memory on card */ + WORD cc_int_count; /* 0x02 Interrupt count */ + WORD cc_revision; /* 0x04 Download code revision */ + BYTE cc_isr_count; /* 0x06 Count when ISR is run */ + BYTE cc_main_count; /* 0x07 Count when main loop is run */ + WORD cc_int_pending; /* 0x08 Interrupt pending */ + WORD cc_poll_count; /* 0x0A Count when poll is run */ + BYTE cc_int_set_count; /* 0x0C Count when host interrupt is set */ + BYTE cc_rfu[0x80 - 0x0D]; /* 0x0D Pad structure to 128 bytes (0x80) */ + +} SXCARD; + +/* SXCARD.cc_init_status definitions... */ +#define ADAPTERS_FOUND (BYTE)0x01 +#define NO_ADAPTERS_FOUND (BYTE)0xFF + +/* SXCARD.cc_mem_size definitions... */ +#define SX_MEMORY_SIZE (BYTE)0x40 + +/* SXCARD.cc_int_count definitions... */ +#define INT_COUNT_DEFAULT 100 /* Hz */ + +/***************************************************************************** +******************************** ******************************** +******************************** SXMODULE ******************************** +******************************** ******************************** +*****************************************************************************/ + +#define TOP_POINTER(a) ((a)|0x8000) /* Sets top bit of word */ +#define UNTOP_POINTER(a) ((a)&~0x8000) /* Clears top bit of word */ + +typedef struct _SXMODULE +{ + WORD mc_next; /* 0x00 Next module "pointer" (ORed with 0x8000) */ + BYTE mc_type; /* 0x02 Type of TA in terms of number of channels */ + BYTE mc_mod_no; /* 0x03 Module number on SI bus cable (0 closest to card) */ + BYTE mc_dtr; /* 0x04 Private DTR copy (TA only) */ + BYTE mc_rfu1; /* 0x05 Reserved */ + WORD mc_uart; /* 0x06 UART base address for this module */ + BYTE mc_chip; /* 0x08 Chip type / number of ports */ + BYTE mc_current_uart; /* 0x09 Current uart selected for this module */ +#ifdef DOWNLOAD + PCHAN mc_chan_pointer[8]; /* 0x0A Pointer to each channel structure */ +#else + WORD mc_chan_pointer[8]; /* 0x0A Define as WORD if not compiling into download */ +#endif + WORD mc_rfu2; /* 0x1A Reserved */ + BYTE mc_opens1; /* 0x1C Number of open ports on first four ports on MTA/SXDC */ + BYTE mc_opens2; /* 0x1D Number of open ports on second four ports on MTA/SXDC */ + BYTE mc_mods; /* 0x1E Types of connector module attached to MTA/SXDC */ + BYTE mc_rev1; /* 0x1F Revision of first CD1400 on MTA/SXDC */ + BYTE mc_rev2; /* 0x20 Revision of second CD1400 on MTA/SXDC */ + BYTE mc_mtaasic_rev; /* 0x21 Revision of MTA ASIC 1..4 -> A, B, C, D */ + BYTE mc_rfu3[0x100 - 0x22]; /* 0x22 Pad structure to 256 bytes (0x100) */ + +} SXMODULE; + +/* SXMODULE.mc_type definitions... */ +#define FOUR_PORTS (BYTE)4 +#define EIGHT_PORTS (BYTE)8 + +/* SXMODULE.mc_chip definitions... */ +#define CHIP_MASK 0xF0 +#define TA (BYTE)0 +#define TA4 (TA | FOUR_PORTS) +#define TA8 (TA | EIGHT_PORTS) +#define TA4_ASIC (BYTE)0x0A +#define TA8_ASIC (BYTE)0x0B +#define MTA_CD1400 (BYTE)0x28 +#define SXDC (BYTE)0x48 + +/* SXMODULE.mc_mods definitions... */ +#define MOD_RS232DB25 0x00 /* RS232 DB25 (socket/plug) */ +#define MOD_RS232RJ45 0x01 /* RS232 RJ45 (shielded/opto-isolated) */ +#define MOD_RESERVED_2 0x02 /* Reserved (RS485) */ +#define MOD_RS422DB25 0x03 /* RS422 DB25 Socket */ +#define MOD_RESERVED_4 0x04 /* Reserved */ +#define MOD_PARALLEL 0x05 /* Parallel */ +#define MOD_RESERVED_6 0x06 /* Reserved (RS423) */ +#define MOD_RESERVED_7 0x07 /* Reserved */ +#define MOD_2_RS232DB25 0x08 /* Rev 2.0 RS232 DB25 (socket/plug) */ +#define MOD_2_RS232RJ45 0x09 /* Rev 2.0 RS232 RJ45 */ +#define MOD_RESERVED_A 0x0A /* Rev 2.0 Reserved */ +#define MOD_2_RS422DB25 0x0B /* Rev 2.0 RS422 DB25 */ +#define MOD_RESERVED_C 0x0C /* Rev 2.0 Reserved */ +#define MOD_2_PARALLEL 0x0D /* Rev 2.0 Parallel */ +#define MOD_RESERVED_E 0x0E /* Rev 2.0 Reserved */ +#define MOD_BLANK 0x0F /* Blank Panel */ + +/***************************************************************************** +******************************** ******************************* +******************************** SXCHANNEL ******************************* +******************************** ******************************* +*****************************************************************************/ + +#define TX_BUFF_OFFSET 0x60 /* Transmit buffer offset in channel structure */ +#define BUFF_POINTER(a) (((a)+TX_BUFF_OFFSET)|0x8000) +#define UNBUFF_POINTER(a) (jet_channel*)(((a)&~0x8000)-TX_BUFF_OFFSET) +#define BUFFER_SIZE 256 +#define HIGH_WATER ((BUFFER_SIZE / 4) * 3) +#define LOW_WATER (BUFFER_SIZE / 4) + +typedef struct _SXCHANNEL +{ + WORD next_item; /* 0x00 Offset from window base of next channels hi_txbuf (ORred with 0x8000) */ + WORD addr_uart; /* 0x02 INTERNAL pointer to uart address. Includes FASTPATH bit */ + WORD module; /* 0x04 Offset from window base of parent SXMODULE structure */ + BYTE type; /* 0x06 Chip type / number of ports (copy of mc_chip) */ + BYTE chan_number; /* 0x07 Channel number on the TA/MTA/SXDC */ + WORD xc_status; /* 0x08 Flow control and I/O status */ + BYTE hi_rxipos; /* 0x0A Receive buffer input index */ + BYTE hi_rxopos; /* 0x0B Receive buffer output index */ + BYTE hi_txopos; /* 0x0C Transmit buffer output index */ + BYTE hi_txipos; /* 0x0D Transmit buffer input index */ + BYTE hi_hstat; /* 0x0E Command register */ + BYTE dtr_bit; /* 0x0F INTERNAL DTR control byte (TA only) */ + BYTE txon; /* 0x10 INTERNAL copy of hi_txon */ + BYTE txoff; /* 0x11 INTERNAL copy of hi_txoff */ + BYTE rxon; /* 0x12 INTERNAL copy of hi_rxon */ + BYTE rxoff; /* 0x13 INTERNAL copy of hi_rxoff */ + BYTE hi_mr1; /* 0x14 Mode Register 1 (databits,parity,RTS rx flow)*/ + BYTE hi_mr2; /* 0x15 Mode Register 2 (stopbits,local,CTS tx flow)*/ + BYTE hi_csr; /* 0x16 Clock Select Register (baud rate) */ + BYTE hi_op; /* 0x17 Modem Output Signal */ + BYTE hi_ip; /* 0x18 Modem Input Signal */ + BYTE hi_state; /* 0x19 Channel status */ + BYTE hi_prtcl; /* 0x1A Channel protocol (flow control) */ + BYTE hi_txon; /* 0x1B Transmit XON character */ + BYTE hi_txoff; /* 0x1C Transmit XOFF character */ + BYTE hi_rxon; /* 0x1D Receive XON character */ + BYTE hi_rxoff; /* 0x1E Receive XOFF character */ + BYTE close_prev; /* 0x1F INTERNAL channel previously closed flag */ + BYTE hi_break; /* 0x20 Break and error control */ + BYTE break_state; /* 0x21 INTERNAL copy of hi_break */ + BYTE hi_mask; /* 0x22 Mask for received data */ + BYTE mask; /* 0x23 INTERNAL copy of hi_mask */ + BYTE mod_type; /* 0x24 MTA/SXDC hardware module type */ + BYTE ccr_state; /* 0x25 INTERNAL MTA/SXDC state of CCR register */ + BYTE ip_mask; /* 0x26 Input handshake mask */ + BYTE hi_parallel; /* 0x27 Parallel port flag */ + BYTE par_error; /* 0x28 Error code for parallel loopback test */ + BYTE any_sent; /* 0x29 INTERNAL data sent flag */ + BYTE asic_txfifo_size; /* 0x2A INTERNAL SXDC transmit FIFO size */ + BYTE rfu1[2]; /* 0x2B Reserved */ + BYTE csr; /* 0x2D INTERNAL copy of hi_csr */ +#ifdef DOWNLOAD + PCHAN nextp; /* 0x2E Offset from window base of next channel structure */ +#else + WORD nextp; /* 0x2E Define as WORD if not compiling into download */ +#endif + BYTE prtcl; /* 0x30 INTERNAL copy of hi_prtcl */ + BYTE mr1; /* 0x31 INTERNAL copy of hi_mr1 */ + BYTE mr2; /* 0x32 INTERNAL copy of hi_mr2 */ + BYTE hi_txbaud; /* 0x33 Extended transmit baud rate (SXDC only if((hi_csr&0x0F)==0x0F) */ + BYTE hi_rxbaud; /* 0x34 Extended receive baud rate (SXDC only if((hi_csr&0xF0)==0xF0) */ + BYTE txbreak_state; /* 0x35 INTERNAL MTA/SXDC transmit break state */ + BYTE txbaud; /* 0x36 INTERNAL copy of hi_txbaud */ + BYTE rxbaud; /* 0x37 INTERNAL copy of hi_rxbaud */ + WORD err_framing; /* 0x38 Count of receive framing errors */ + WORD err_parity; /* 0x3A Count of receive parity errors */ + WORD err_overrun; /* 0x3C Count of receive overrun errors */ + WORD err_overflow; /* 0x3E Count of receive buffer overflow errors */ + BYTE rfu2[TX_BUFF_OFFSET - 0x40]; /* 0x40 Reserved until hi_txbuf */ + BYTE hi_txbuf[BUFFER_SIZE]; /* 0x060 Transmit buffer */ + BYTE hi_rxbuf[BUFFER_SIZE]; /* 0x160 Receive buffer */ + BYTE rfu3[0x300 - 0x260]; /* 0x260 Reserved until 768 bytes (0x300) */ + +} SXCHANNEL; + +/* SXCHANNEL.addr_uart definitions... */ +#define FASTPATH 0x1000 /* Set to indicate fast rx/tx processing (TA only) */ + +/* SXCHANNEL.xc_status definitions... */ +#define X_TANY 0x0001 /* XON is any character (TA only) */ +#define X_TION 0x0001 /* Tx interrupts on (MTA only) */ +#define X_TXEN 0x0002 /* Tx XON/XOFF enabled (TA only) */ +#define X_RTSEN 0x0002 /* RTS FLOW enabled (MTA only) */ +#define X_TXRC 0x0004 /* XOFF received (TA only) */ +#define X_RTSLOW 0x0004 /* RTS dropped (MTA only) */ +#define X_RXEN 0x0008 /* Rx XON/XOFF enabled */ +#define X_ANYXO 0x0010 /* XOFF pending/sent or RTS dropped */ +#define X_RXSE 0x0020 /* Rx XOFF sent */ +#define X_NPEND 0x0040 /* Rx XON pending or XOFF pending */ +#define X_FPEND 0x0080 /* Rx XOFF pending */ +#define C_CRSE 0x0100 /* Carriage return sent (TA only) */ +#define C_TEMR 0x0100 /* Tx empty requested (MTA only) */ +#define C_TEMA 0x0200 /* Tx empty acked (MTA only) */ +#define C_ANYP 0x0200 /* Any protocol bar tx XON/XOFF (TA only) */ +#define C_EN 0x0400 /* Cooking enabled (on MTA means port is also || */ +#define C_HIGH 0x0800 /* Buffer previously hit high water */ +#define C_CTSEN 0x1000 /* CTS automatic flow-control enabled */ +#define C_DCDEN 0x2000 /* DCD/DTR checking enabled */ +#define C_BREAK 0x4000 /* Break detected */ +#define C_RTSEN 0x8000 /* RTS automatic flow control enabled (MTA only) */ +#define C_PARITY 0x8000 /* Parity checking enabled (TA only) */ + +/* SXCHANNEL.hi_hstat definitions... */ +#define HS_IDLE_OPEN 0x00 /* Channel open state */ +#define HS_LOPEN 0x02 /* Local open command (no modem monitoring) */ +#define HS_MOPEN 0x04 /* Modem open command (wait for DCD signal) */ +#define HS_IDLE_MPEND 0x06 /* Waiting for DCD signal state */ +#define HS_CONFIG 0x08 /* Configuration command */ +#define HS_CLOSE 0x0A /* Close command */ +#define HS_START 0x0C /* Start transmit break command */ +#define HS_STOP 0x0E /* Stop transmit break command */ +#define HS_IDLE_CLOSED 0x10 /* Closed channel state */ +#define HS_IDLE_BREAK 0x12 /* Transmit break state */ +#define HS_FORCE_CLOSED 0x14 /* Force close command */ +#define HS_RESUME 0x16 /* Clear pending XOFF command */ +#define HS_WFLUSH 0x18 /* Flush transmit buffer command */ +#define HS_RFLUSH 0x1A /* Flush receive buffer command */ +#define HS_SUSPEND 0x1C /* Suspend output command (like XOFF received) */ +#define PARALLEL 0x1E /* Parallel port loopback test command (Diagnostics Only) */ +#define ENABLE_RX_INTS 0x20 /* Enable receive interrupts command (Diagnostics Only) */ +#define ENABLE_TX_INTS 0x22 /* Enable transmit interrupts command (Diagnostics Only) */ +#define ENABLE_MDM_INTS 0x24 /* Enable modem interrupts command (Diagnostics Only) */ +#define DISABLE_INTS 0x26 /* Disable interrupts command (Diagnostics Only) */ + +/* SXCHANNEL.hi_mr1 definitions... */ +#define MR1_BITS 0x03 /* Data bits mask */ +#define MR1_5_BITS 0x00 /* 5 data bits */ +#define MR1_6_BITS 0x01 /* 6 data bits */ +#define MR1_7_BITS 0x02 /* 7 data bits */ +#define MR1_8_BITS 0x03 /* 8 data bits */ +#define MR1_PARITY 0x1C /* Parity mask */ +#define MR1_ODD 0x04 /* Odd parity */ +#define MR1_EVEN 0x00 /* Even parity */ +#define MR1_WITH 0x00 /* Parity enabled */ +#define MR1_FORCE 0x08 /* Force parity */ +#define MR1_NONE 0x10 /* No parity */ +#define MR1_NOPARITY MR1_NONE /* No parity */ +#define MR1_ODDPARITY (MR1_WITH|MR1_ODD) /* Odd parity */ +#define MR1_EVENPARITY (MR1_WITH|MR1_EVEN) /* Even parity */ +#define MR1_MARKPARITY (MR1_FORCE|MR1_ODD) /* Mark parity */ +#define MR1_SPACEPARITY (MR1_FORCE|MR1_EVEN) /* Space parity */ +#define MR1_RTS_RXFLOW 0x80 /* RTS receive flow control */ + +/* SXCHANNEL.hi_mr2 definitions... */ +#define MR2_STOP 0x0F /* Stop bits mask */ +#define MR2_1_STOP 0x07 /* 1 stop bit */ +#define MR2_2_STOP 0x0F /* 2 stop bits */ +#define MR2_CTS_TXFLOW 0x10 /* CTS transmit flow control */ +#define MR2_RTS_TOGGLE 0x20 /* RTS toggle on transmit */ +#define MR2_NORMAL 0x00 /* Normal mode */ +#define MR2_AUTO 0x40 /* Auto-echo mode (TA only) */ +#define MR2_LOCAL 0x80 /* Local echo mode */ +#define MR2_REMOTE 0xC0 /* Remote echo mode (TA only) */ + +/* SXCHANNEL.hi_csr definitions... */ +#define CSR_75 0x0 /* 75 baud */ +#define CSR_110 0x1 /* 110 baud (TA), 115200 (MTA/SXDC) */ +#define CSR_38400 0x2 /* 38400 baud */ +#define CSR_150 0x3 /* 150 baud */ +#define CSR_300 0x4 /* 300 baud */ +#define CSR_600 0x5 /* 600 baud */ +#define CSR_1200 0x6 /* 1200 baud */ +#define CSR_2000 0x7 /* 2000 baud */ +#define CSR_2400 0x8 /* 2400 baud */ +#define CSR_4800 0x9 /* 4800 baud */ +#define CSR_1800 0xA /* 1800 baud */ +#define CSR_9600 0xB /* 9600 baud */ +#define CSR_19200 0xC /* 19200 baud */ +#define CSR_57600 0xD /* 57600 baud */ +#define CSR_EXTBAUD 0xF /* Extended baud rate (hi_txbaud/hi_rxbaud) */ + +/* SXCHANNEL.hi_op definitions... */ +#define OP_RTS 0x01 /* RTS modem output signal */ +#define OP_DTR 0x02 /* DTR modem output signal */ + +/* SXCHANNEL.hi_ip definitions... */ +#define IP_CTS 0x02 /* CTS modem input signal */ +#define IP_DCD 0x04 /* DCD modem input signal */ +#define IP_DSR 0x20 /* DTR modem input signal */ +#define IP_RI 0x40 /* RI modem input signal */ + +/* SXCHANNEL.hi_state definitions... */ +#define ST_BREAK 0x01 /* Break received (clear with config) */ +#define ST_DCD 0x02 /* DCD signal changed state */ + +/* SXCHANNEL.hi_prtcl definitions... */ +#define SP_TANY 0x01 /* Transmit XON/XANY (if SP_TXEN enabled) */ +#define SP_TXEN 0x02 /* Transmit XON/XOFF flow control */ +#define SP_CEN 0x04 /* Cooking enabled */ +#define SP_RXEN 0x08 /* Rx XON/XOFF enabled */ +#define SP_DCEN 0x20 /* DCD / DTR check */ +#define SP_DTR_RXFLOW 0x40 /* DTR receive flow control */ +#define SP_PAEN 0x80 /* Parity checking enabled */ + +/* SXCHANNEL.hi_break definitions... */ +#define BR_IGN 0x01 /* Ignore any received breaks */ +#define BR_INT 0x02 /* Interrupt on received break */ +#define BR_PARMRK 0x04 /* Enable parmrk parity error processing */ +#define BR_PARIGN 0x08 /* Ignore chars with parity errors */ +#define BR_ERRINT 0x80 /* Treat parity/framing/overrun errors as exceptions */ + +/* SXCHANNEL.par_error definitions.. */ +#define DIAG_IRQ_RX 0x01 /* Indicate serial receive interrupt (diags only) */ +#define DIAG_IRQ_TX 0x02 /* Indicate serial transmit interrupt (diags only) */ +#define DIAG_IRQ_MD 0x04 /* Indicate serial modem interrupt (diags only) */ + +/* SXCHANNEL.hi_txbaud/hi_rxbaud definitions... (SXDC only) */ +#define BAUD_75 0x00 /* 75 baud */ +#define BAUD_115200 0x01 /* 115200 baud */ +#define BAUD_38400 0x02 /* 38400 baud */ +#define BAUD_150 0x03 /* 150 baud */ +#define BAUD_300 0x04 /* 300 baud */ +#define BAUD_600 0x05 /* 600 baud */ +#define BAUD_1200 0x06 /* 1200 baud */ +#define BAUD_2000 0x07 /* 2000 baud */ +#define BAUD_2400 0x08 /* 2400 baud */ +#define BAUD_4800 0x09 /* 4800 baud */ +#define BAUD_1800 0x0A /* 1800 baud */ +#define BAUD_9600 0x0B /* 9600 baud */ +#define BAUD_19200 0x0C /* 19200 baud */ +#define BAUD_57600 0x0D /* 57600 baud */ +#define BAUD_230400 0x0E /* 230400 baud */ +#define BAUD_460800 0x0F /* 460800 baud */ +#define BAUD_921600 0x10 /* 921600 baud */ +#define BAUD_50 0x11 /* 50 baud */ +#define BAUD_110 0x12 /* 110 baud */ +#define BAUD_134_5 0x13 /* 134.5 baud */ +#define BAUD_200 0x14 /* 200 baud */ +#define BAUD_7200 0x15 /* 7200 baud */ +#define BAUD_56000 0x16 /* 56000 baud */ +#define BAUD_64000 0x17 /* 64000 baud */ +#define BAUD_76800 0x18 /* 76800 baud */ +#define BAUD_128000 0x19 /* 128000 baud */ +#define BAUD_150000 0x1A /* 150000 baud */ +#define BAUD_14400 0x1B /* 14400 baud */ +#define BAUD_256000 0x1C /* 256000 baud */ +#define BAUD_28800 0x1D /* 28800 baud */ + +/* SXCHANNEL.txbreak_state definiions... */ +#define TXBREAK_OFF 0 /* Not sending break */ +#define TXBREAK_START 1 /* Begin sending break */ +#define TXBREAK_START1 2 /* Begin sending break, part 1 */ +#define TXBREAK_ON 3 /* Sending break */ +#define TXBREAK_STOP 4 /* Stop sending break */ +#define TXBREAK_STOP1 5 /* Stop sending break, part 1 */ + +#endif /* _sxwindow_h */ + +/* End of SXWINDOW.H */ + diff --git a/drivers/staging/generic_serial/vme_scc.c b/drivers/staging/generic_serial/vme_scc.c new file mode 100644 index 000000000000..96838640f575 --- /dev/null +++ b/drivers/staging/generic_serial/vme_scc.c @@ -0,0 +1,1145 @@ +/* + * drivers/char/vme_scc.c: MVME147, MVME162, BVME6000 SCC serial ports + * implementation. + * Copyright 1999 Richard Hirst + * + * Based on atari_SCC.c which was + * Copyright 1994-95 Roman Hodek + * Partially based on PC-Linux serial.c by Linus Torvalds and Theodore Ts'o + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef CONFIG_MVME147_SCC +#include +#endif +#ifdef CONFIG_MVME162_SCC +#include +#endif +#ifdef CONFIG_BVME6000_SCC +#include +#endif + +#include +#include "scc.h" + + +#define CHANNEL_A 0 +#define CHANNEL_B 1 + +#define SCC_MINOR_BASE 64 + +/* Shadows for all SCC write registers */ +static unsigned char scc_shadow[2][16]; + +/* Location to access for SCC register access delay */ +static volatile unsigned char *scc_del = NULL; + +/* To keep track of STATUS_REG state for detection of Ext/Status int source */ +static unsigned char scc_last_status_reg[2]; + +/***************************** Prototypes *****************************/ + +/* Function prototypes */ +static void scc_disable_tx_interrupts(void * ptr); +static void scc_enable_tx_interrupts(void * ptr); +static void scc_disable_rx_interrupts(void * ptr); +static void scc_enable_rx_interrupts(void * ptr); +static int scc_carrier_raised(struct tty_port *port); +static void scc_shutdown_port(void * ptr); +static int scc_set_real_termios(void *ptr); +static void scc_hungup(void *ptr); +static void scc_close(void *ptr); +static int scc_chars_in_buffer(void * ptr); +static int scc_open(struct tty_struct * tty, struct file * filp); +static int scc_ioctl(struct tty_struct * tty, + unsigned int cmd, unsigned long arg); +static void scc_throttle(struct tty_struct *tty); +static void scc_unthrottle(struct tty_struct *tty); +static irqreturn_t scc_tx_int(int irq, void *data); +static irqreturn_t scc_rx_int(int irq, void *data); +static irqreturn_t scc_stat_int(int irq, void *data); +static irqreturn_t scc_spcond_int(int irq, void *data); +static void scc_setsignals(struct scc_port *port, int dtr, int rts); +static int scc_break_ctl(struct tty_struct *tty, int break_state); + +static struct tty_driver *scc_driver; + +static struct scc_port scc_ports[2]; + +/*--------------------------------------------------------------------------- + * Interface from generic_serial.c back here + *--------------------------------------------------------------------------*/ + +static struct real_driver scc_real_driver = { + scc_disable_tx_interrupts, + scc_enable_tx_interrupts, + scc_disable_rx_interrupts, + scc_enable_rx_interrupts, + scc_shutdown_port, + scc_set_real_termios, + scc_chars_in_buffer, + scc_close, + scc_hungup, + NULL +}; + + +static const struct tty_operations scc_ops = { + .open = scc_open, + .close = gs_close, + .write = gs_write, + .put_char = gs_put_char, + .flush_chars = gs_flush_chars, + .write_room = gs_write_room, + .chars_in_buffer = gs_chars_in_buffer, + .flush_buffer = gs_flush_buffer, + .ioctl = scc_ioctl, + .throttle = scc_throttle, + .unthrottle = scc_unthrottle, + .set_termios = gs_set_termios, + .stop = gs_stop, + .start = gs_start, + .hangup = gs_hangup, + .break_ctl = scc_break_ctl, +}; + +static const struct tty_port_operations scc_port_ops = { + .carrier_raised = scc_carrier_raised, +}; + +/*---------------------------------------------------------------------------- + * vme_scc_init() and support functions + *---------------------------------------------------------------------------*/ + +static int __init scc_init_drivers(void) +{ + int error; + + scc_driver = alloc_tty_driver(2); + if (!scc_driver) + return -ENOMEM; + scc_driver->owner = THIS_MODULE; + scc_driver->driver_name = "scc"; + scc_driver->name = "ttyS"; + scc_driver->major = TTY_MAJOR; + scc_driver->minor_start = SCC_MINOR_BASE; + scc_driver->type = TTY_DRIVER_TYPE_SERIAL; + scc_driver->subtype = SERIAL_TYPE_NORMAL; + scc_driver->init_termios = tty_std_termios; + scc_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + scc_driver->init_termios.c_ispeed = 9600; + scc_driver->init_termios.c_ospeed = 9600; + scc_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(scc_driver, &scc_ops); + + if ((error = tty_register_driver(scc_driver))) { + printk(KERN_ERR "scc: Couldn't register scc driver, error = %d\n", + error); + put_tty_driver(scc_driver); + return 1; + } + + return 0; +} + + +/* ports[] array is indexed by line no (i.e. [0] for ttyS0, [1] for ttyS1). + */ + +static void __init scc_init_portstructs(void) +{ + struct scc_port *port; + int i; + + for (i = 0; i < 2; i++) { + port = scc_ports + i; + tty_port_init(&port->gs.port); + port->gs.port.ops = &scc_port_ops; + port->gs.magic = SCC_MAGIC; + port->gs.close_delay = HZ/2; + port->gs.closing_wait = 30 * HZ; + port->gs.rd = &scc_real_driver; +#ifdef NEW_WRITE_LOCKING + port->gs.port_write_mutex = MUTEX; +#endif + init_waitqueue_head(&port->gs.port.open_wait); + init_waitqueue_head(&port->gs.port.close_wait); + } +} + + +#ifdef CONFIG_MVME147_SCC +static int __init mvme147_scc_init(void) +{ + struct scc_port *port; + int error; + + printk(KERN_INFO "SCC: MVME147 Serial Driver\n"); + /* Init channel A */ + port = &scc_ports[0]; + port->channel = CHANNEL_A; + port->ctrlp = (volatile unsigned char *)M147_SCC_A_ADDR; + port->datap = port->ctrlp + 1; + port->port_a = &scc_ports[0]; + port->port_b = &scc_ports[1]; + error = request_irq(MVME147_IRQ_SCCA_TX, scc_tx_int, IRQF_DISABLED, + "SCC-A TX", port); + if (error) + goto fail; + error = request_irq(MVME147_IRQ_SCCA_STAT, scc_stat_int, IRQF_DISABLED, + "SCC-A status", port); + if (error) + goto fail_free_a_tx; + error = request_irq(MVME147_IRQ_SCCA_RX, scc_rx_int, IRQF_DISABLED, + "SCC-A RX", port); + if (error) + goto fail_free_a_stat; + error = request_irq(MVME147_IRQ_SCCA_SPCOND, scc_spcond_int, + IRQF_DISABLED, "SCC-A special cond", port); + if (error) + goto fail_free_a_rx; + + { + SCC_ACCESS_INIT(port); + + /* disable interrupts for this channel */ + SCCwrite(INT_AND_DMA_REG, 0); + /* Set the interrupt vector */ + SCCwrite(INT_VECTOR_REG, MVME147_IRQ_SCC_BASE); + /* Interrupt parameters: vector includes status, status low */ + SCCwrite(MASTER_INT_CTRL, MIC_VEC_INCL_STAT); + SCCmod(MASTER_INT_CTRL, 0xff, MIC_MASTER_INT_ENAB); + } + + /* Init channel B */ + port = &scc_ports[1]; + port->channel = CHANNEL_B; + port->ctrlp = (volatile unsigned char *)M147_SCC_B_ADDR; + port->datap = port->ctrlp + 1; + port->port_a = &scc_ports[0]; + port->port_b = &scc_ports[1]; + error = request_irq(MVME147_IRQ_SCCB_TX, scc_tx_int, IRQF_DISABLED, + "SCC-B TX", port); + if (error) + goto fail_free_a_spcond; + error = request_irq(MVME147_IRQ_SCCB_STAT, scc_stat_int, IRQF_DISABLED, + "SCC-B status", port); + if (error) + goto fail_free_b_tx; + error = request_irq(MVME147_IRQ_SCCB_RX, scc_rx_int, IRQF_DISABLED, + "SCC-B RX", port); + if (error) + goto fail_free_b_stat; + error = request_irq(MVME147_IRQ_SCCB_SPCOND, scc_spcond_int, + IRQF_DISABLED, "SCC-B special cond", port); + if (error) + goto fail_free_b_rx; + + { + SCC_ACCESS_INIT(port); + + /* disable interrupts for this channel */ + SCCwrite(INT_AND_DMA_REG, 0); + } + + /* Ensure interrupts are enabled in the PCC chip */ + m147_pcc->serial_cntrl=PCC_LEVEL_SERIAL|PCC_INT_ENAB; + + /* Initialise the tty driver structures and register */ + scc_init_portstructs(); + scc_init_drivers(); + + return 0; + +fail_free_b_rx: + free_irq(MVME147_IRQ_SCCB_RX, port); +fail_free_b_stat: + free_irq(MVME147_IRQ_SCCB_STAT, port); +fail_free_b_tx: + free_irq(MVME147_IRQ_SCCB_TX, port); +fail_free_a_spcond: + free_irq(MVME147_IRQ_SCCA_SPCOND, port); +fail_free_a_rx: + free_irq(MVME147_IRQ_SCCA_RX, port); +fail_free_a_stat: + free_irq(MVME147_IRQ_SCCA_STAT, port); +fail_free_a_tx: + free_irq(MVME147_IRQ_SCCA_TX, port); +fail: + return error; +} +#endif + + +#ifdef CONFIG_MVME162_SCC +static int __init mvme162_scc_init(void) +{ + struct scc_port *port; + int error; + + if (!(mvme16x_config & MVME16x_CONFIG_GOT_SCCA)) + return (-ENODEV); + + printk(KERN_INFO "SCC: MVME162 Serial Driver\n"); + /* Init channel A */ + port = &scc_ports[0]; + port->channel = CHANNEL_A; + port->ctrlp = (volatile unsigned char *)MVME_SCC_A_ADDR; + port->datap = port->ctrlp + 2; + port->port_a = &scc_ports[0]; + port->port_b = &scc_ports[1]; + error = request_irq(MVME162_IRQ_SCCA_TX, scc_tx_int, IRQF_DISABLED, + "SCC-A TX", port); + if (error) + goto fail; + error = request_irq(MVME162_IRQ_SCCA_STAT, scc_stat_int, IRQF_DISABLED, + "SCC-A status", port); + if (error) + goto fail_free_a_tx; + error = request_irq(MVME162_IRQ_SCCA_RX, scc_rx_int, IRQF_DISABLED, + "SCC-A RX", port); + if (error) + goto fail_free_a_stat; + error = request_irq(MVME162_IRQ_SCCA_SPCOND, scc_spcond_int, + IRQF_DISABLED, "SCC-A special cond", port); + if (error) + goto fail_free_a_rx; + + { + SCC_ACCESS_INIT(port); + + /* disable interrupts for this channel */ + SCCwrite(INT_AND_DMA_REG, 0); + /* Set the interrupt vector */ + SCCwrite(INT_VECTOR_REG, MVME162_IRQ_SCC_BASE); + /* Interrupt parameters: vector includes status, status low */ + SCCwrite(MASTER_INT_CTRL, MIC_VEC_INCL_STAT); + SCCmod(MASTER_INT_CTRL, 0xff, MIC_MASTER_INT_ENAB); + } + + /* Init channel B */ + port = &scc_ports[1]; + port->channel = CHANNEL_B; + port->ctrlp = (volatile unsigned char *)MVME_SCC_B_ADDR; + port->datap = port->ctrlp + 2; + port->port_a = &scc_ports[0]; + port->port_b = &scc_ports[1]; + error = request_irq(MVME162_IRQ_SCCB_TX, scc_tx_int, IRQF_DISABLED, + "SCC-B TX", port); + if (error) + goto fail_free_a_spcond; + error = request_irq(MVME162_IRQ_SCCB_STAT, scc_stat_int, IRQF_DISABLED, + "SCC-B status", port); + if (error) + goto fail_free_b_tx; + error = request_irq(MVME162_IRQ_SCCB_RX, scc_rx_int, IRQF_DISABLED, + "SCC-B RX", port); + if (error) + goto fail_free_b_stat; + error = request_irq(MVME162_IRQ_SCCB_SPCOND, scc_spcond_int, + IRQF_DISABLED, "SCC-B special cond", port); + if (error) + goto fail_free_b_rx; + + { + SCC_ACCESS_INIT(port); /* Either channel will do */ + + /* disable interrupts for this channel */ + SCCwrite(INT_AND_DMA_REG, 0); + } + + /* Ensure interrupts are enabled in the MC2 chip */ + *(volatile char *)0xfff4201d = 0x14; + + /* Initialise the tty driver structures and register */ + scc_init_portstructs(); + scc_init_drivers(); + + return 0; + +fail_free_b_rx: + free_irq(MVME162_IRQ_SCCB_RX, port); +fail_free_b_stat: + free_irq(MVME162_IRQ_SCCB_STAT, port); +fail_free_b_tx: + free_irq(MVME162_IRQ_SCCB_TX, port); +fail_free_a_spcond: + free_irq(MVME162_IRQ_SCCA_SPCOND, port); +fail_free_a_rx: + free_irq(MVME162_IRQ_SCCA_RX, port); +fail_free_a_stat: + free_irq(MVME162_IRQ_SCCA_STAT, port); +fail_free_a_tx: + free_irq(MVME162_IRQ_SCCA_TX, port); +fail: + return error; +} +#endif + + +#ifdef CONFIG_BVME6000_SCC +static int __init bvme6000_scc_init(void) +{ + struct scc_port *port; + int error; + + printk(KERN_INFO "SCC: BVME6000 Serial Driver\n"); + /* Init channel A */ + port = &scc_ports[0]; + port->channel = CHANNEL_A; + port->ctrlp = (volatile unsigned char *)BVME_SCC_A_ADDR; + port->datap = port->ctrlp + 4; + port->port_a = &scc_ports[0]; + port->port_b = &scc_ports[1]; + error = request_irq(BVME_IRQ_SCCA_TX, scc_tx_int, IRQF_DISABLED, + "SCC-A TX", port); + if (error) + goto fail; + error = request_irq(BVME_IRQ_SCCA_STAT, scc_stat_int, IRQF_DISABLED, + "SCC-A status", port); + if (error) + goto fail_free_a_tx; + error = request_irq(BVME_IRQ_SCCA_RX, scc_rx_int, IRQF_DISABLED, + "SCC-A RX", port); + if (error) + goto fail_free_a_stat; + error = request_irq(BVME_IRQ_SCCA_SPCOND, scc_spcond_int, + IRQF_DISABLED, "SCC-A special cond", port); + if (error) + goto fail_free_a_rx; + + { + SCC_ACCESS_INIT(port); + + /* disable interrupts for this channel */ + SCCwrite(INT_AND_DMA_REG, 0); + /* Set the interrupt vector */ + SCCwrite(INT_VECTOR_REG, BVME_IRQ_SCC_BASE); + /* Interrupt parameters: vector includes status, status low */ + SCCwrite(MASTER_INT_CTRL, MIC_VEC_INCL_STAT); + SCCmod(MASTER_INT_CTRL, 0xff, MIC_MASTER_INT_ENAB); + } + + /* Init channel B */ + port = &scc_ports[1]; + port->channel = CHANNEL_B; + port->ctrlp = (volatile unsigned char *)BVME_SCC_B_ADDR; + port->datap = port->ctrlp + 4; + port->port_a = &scc_ports[0]; + port->port_b = &scc_ports[1]; + error = request_irq(BVME_IRQ_SCCB_TX, scc_tx_int, IRQF_DISABLED, + "SCC-B TX", port); + if (error) + goto fail_free_a_spcond; + error = request_irq(BVME_IRQ_SCCB_STAT, scc_stat_int, IRQF_DISABLED, + "SCC-B status", port); + if (error) + goto fail_free_b_tx; + error = request_irq(BVME_IRQ_SCCB_RX, scc_rx_int, IRQF_DISABLED, + "SCC-B RX", port); + if (error) + goto fail_free_b_stat; + error = request_irq(BVME_IRQ_SCCB_SPCOND, scc_spcond_int, + IRQF_DISABLED, "SCC-B special cond", port); + if (error) + goto fail_free_b_rx; + + { + SCC_ACCESS_INIT(port); /* Either channel will do */ + + /* disable interrupts for this channel */ + SCCwrite(INT_AND_DMA_REG, 0); + } + + /* Initialise the tty driver structures and register */ + scc_init_portstructs(); + scc_init_drivers(); + + return 0; + +fail: + free_irq(BVME_IRQ_SCCA_STAT, port); +fail_free_a_tx: + free_irq(BVME_IRQ_SCCA_RX, port); +fail_free_a_stat: + free_irq(BVME_IRQ_SCCA_SPCOND, port); +fail_free_a_rx: + free_irq(BVME_IRQ_SCCB_TX, port); +fail_free_a_spcond: + free_irq(BVME_IRQ_SCCB_STAT, port); +fail_free_b_tx: + free_irq(BVME_IRQ_SCCB_RX, port); +fail_free_b_stat: + free_irq(BVME_IRQ_SCCB_SPCOND, port); +fail_free_b_rx: + return error; +} +#endif + + +static int __init vme_scc_init(void) +{ + int res = -ENODEV; + +#ifdef CONFIG_MVME147_SCC + if (MACH_IS_MVME147) + res = mvme147_scc_init(); +#endif +#ifdef CONFIG_MVME162_SCC + if (MACH_IS_MVME16x) + res = mvme162_scc_init(); +#endif +#ifdef CONFIG_BVME6000_SCC + if (MACH_IS_BVME6000) + res = bvme6000_scc_init(); +#endif + return res; +} + +module_init(vme_scc_init); + + +/*--------------------------------------------------------------------------- + * Interrupt handlers + *--------------------------------------------------------------------------*/ + +static irqreturn_t scc_rx_int(int irq, void *data) +{ + unsigned char ch; + struct scc_port *port = data; + struct tty_struct *tty = port->gs.port.tty; + SCC_ACCESS_INIT(port); + + ch = SCCread_NB(RX_DATA_REG); + if (!tty) { + printk(KERN_WARNING "scc_rx_int with NULL tty!\n"); + SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); + return IRQ_HANDLED; + } + tty_insert_flip_char(tty, ch, 0); + + /* Check if another character is already ready; in that case, the + * spcond_int() function must be used, because this character may have an + * error condition that isn't signalled by the interrupt vector used! + */ + if (SCCread(INT_PENDING_REG) & + (port->channel == CHANNEL_A ? IPR_A_RX : IPR_B_RX)) { + scc_spcond_int (irq, data); + return IRQ_HANDLED; + } + + SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); + + tty_flip_buffer_push(tty); + return IRQ_HANDLED; +} + + +static irqreturn_t scc_spcond_int(int irq, void *data) +{ + struct scc_port *port = data; + struct tty_struct *tty = port->gs.port.tty; + unsigned char stat, ch, err; + int int_pending_mask = port->channel == CHANNEL_A ? + IPR_A_RX : IPR_B_RX; + SCC_ACCESS_INIT(port); + + if (!tty) { + printk(KERN_WARNING "scc_spcond_int with NULL tty!\n"); + SCCwrite(COMMAND_REG, CR_ERROR_RESET); + SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); + return IRQ_HANDLED; + } + do { + stat = SCCread(SPCOND_STATUS_REG); + ch = SCCread_NB(RX_DATA_REG); + + if (stat & SCSR_RX_OVERRUN) + err = TTY_OVERRUN; + else if (stat & SCSR_PARITY_ERR) + err = TTY_PARITY; + else if (stat & SCSR_CRC_FRAME_ERR) + err = TTY_FRAME; + else + err = 0; + + tty_insert_flip_char(tty, ch, err); + + /* ++TeSche: *All* errors have to be cleared manually, + * else the condition persists for the next chars + */ + if (err) + SCCwrite(COMMAND_REG, CR_ERROR_RESET); + + } while(SCCread(INT_PENDING_REG) & int_pending_mask); + + SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); + + tty_flip_buffer_push(tty); + return IRQ_HANDLED; +} + + +static irqreturn_t scc_tx_int(int irq, void *data) +{ + struct scc_port *port = data; + SCC_ACCESS_INIT(port); + + if (!port->gs.port.tty) { + printk(KERN_WARNING "scc_tx_int with NULL tty!\n"); + SCCmod (INT_AND_DMA_REG, ~IDR_TX_INT_ENAB, 0); + SCCwrite(COMMAND_REG, CR_TX_PENDING_RESET); + SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); + return IRQ_HANDLED; + } + while ((SCCread_NB(STATUS_REG) & SR_TX_BUF_EMPTY)) { + if (port->x_char) { + SCCwrite(TX_DATA_REG, port->x_char); + port->x_char = 0; + } + else if ((port->gs.xmit_cnt <= 0) || + port->gs.port.tty->stopped || + port->gs.port.tty->hw_stopped) + break; + else { + SCCwrite(TX_DATA_REG, port->gs.xmit_buf[port->gs.xmit_tail++]); + port->gs.xmit_tail = port->gs.xmit_tail & (SERIAL_XMIT_SIZE-1); + if (--port->gs.xmit_cnt <= 0) + break; + } + } + if ((port->gs.xmit_cnt <= 0) || port->gs.port.tty->stopped || + port->gs.port.tty->hw_stopped) { + /* disable tx interrupts */ + SCCmod (INT_AND_DMA_REG, ~IDR_TX_INT_ENAB, 0); + SCCwrite(COMMAND_REG, CR_TX_PENDING_RESET); /* disable tx_int on next tx underrun? */ + port->gs.port.flags &= ~GS_TX_INTEN; + } + if (port->gs.port.tty && port->gs.xmit_cnt <= port->gs.wakeup_chars) + tty_wakeup(port->gs.port.tty); + + SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); + return IRQ_HANDLED; +} + + +static irqreturn_t scc_stat_int(int irq, void *data) +{ + struct scc_port *port = data; + unsigned channel = port->channel; + unsigned char last_sr, sr, changed; + SCC_ACCESS_INIT(port); + + last_sr = scc_last_status_reg[channel]; + sr = scc_last_status_reg[channel] = SCCread_NB(STATUS_REG); + changed = last_sr ^ sr; + + if (changed & SR_DCD) { + port->c_dcd = !!(sr & SR_DCD); + if (!(port->gs.port.flags & ASYNC_CHECK_CD)) + ; /* Don't report DCD changes */ + else if (port->c_dcd) { + wake_up_interruptible(&port->gs.port.open_wait); + } + else { + if (port->gs.port.tty) + tty_hangup (port->gs.port.tty); + } + } + SCCwrite(COMMAND_REG, CR_EXTSTAT_RESET); + SCCwrite_NB(COMMAND_REG, CR_HIGHEST_IUS_RESET); + return IRQ_HANDLED; +} + + +/*--------------------------------------------------------------------------- + * generic_serial.c callback funtions + *--------------------------------------------------------------------------*/ + +static void scc_disable_tx_interrupts(void *ptr) +{ + struct scc_port *port = ptr; + unsigned long flags; + SCC_ACCESS_INIT(port); + + local_irq_save(flags); + SCCmod(INT_AND_DMA_REG, ~IDR_TX_INT_ENAB, 0); + port->gs.port.flags &= ~GS_TX_INTEN; + local_irq_restore(flags); +} + + +static void scc_enable_tx_interrupts(void *ptr) +{ + struct scc_port *port = ptr; + unsigned long flags; + SCC_ACCESS_INIT(port); + + local_irq_save(flags); + SCCmod(INT_AND_DMA_REG, 0xff, IDR_TX_INT_ENAB); + /* restart the transmitter */ + scc_tx_int (0, port); + local_irq_restore(flags); +} + + +static void scc_disable_rx_interrupts(void *ptr) +{ + struct scc_port *port = ptr; + unsigned long flags; + SCC_ACCESS_INIT(port); + + local_irq_save(flags); + SCCmod(INT_AND_DMA_REG, + ~(IDR_RX_INT_MASK|IDR_PARERR_AS_SPCOND|IDR_EXTSTAT_INT_ENAB), 0); + local_irq_restore(flags); +} + + +static void scc_enable_rx_interrupts(void *ptr) +{ + struct scc_port *port = ptr; + unsigned long flags; + SCC_ACCESS_INIT(port); + + local_irq_save(flags); + SCCmod(INT_AND_DMA_REG, 0xff, + IDR_EXTSTAT_INT_ENAB|IDR_PARERR_AS_SPCOND|IDR_RX_INT_ALL); + local_irq_restore(flags); +} + + +static int scc_carrier_raised(struct tty_port *port) +{ + struct scc_port *sc = container_of(port, struct scc_port, gs.port); + unsigned channel = sc->channel; + + return !!(scc_last_status_reg[channel] & SR_DCD); +} + + +static void scc_shutdown_port(void *ptr) +{ + struct scc_port *port = ptr; + + port->gs.port.flags &= ~ GS_ACTIVE; + if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) { + scc_setsignals (port, 0, 0); + } +} + + +static int scc_set_real_termios (void *ptr) +{ + /* the SCC has char sizes 5,7,6,8 in that order! */ + static int chsize_map[4] = { 0, 2, 1, 3 }; + unsigned cflag, baud, chsize, channel, brgval = 0; + unsigned long flags; + struct scc_port *port = ptr; + SCC_ACCESS_INIT(port); + + if (!port->gs.port.tty || !port->gs.port.tty->termios) return 0; + + channel = port->channel; + + if (channel == CHANNEL_A) + return 0; /* Settings controlled by boot PROM */ + + cflag = port->gs.port.tty->termios->c_cflag; + baud = port->gs.baud; + chsize = (cflag & CSIZE) >> 4; + + if (baud == 0) { + /* speed == 0 -> drop DTR */ + local_irq_save(flags); + SCCmod(TX_CTRL_REG, ~TCR_DTR, 0); + local_irq_restore(flags); + return 0; + } + else if ((MACH_IS_MVME16x && (baud < 50 || baud > 38400)) || + (MACH_IS_MVME147 && (baud < 50 || baud > 19200)) || + (MACH_IS_BVME6000 &&(baud < 50 || baud > 76800))) { + printk(KERN_NOTICE "SCC: Bad speed requested, %d\n", baud); + return 0; + } + + if (cflag & CLOCAL) + port->gs.port.flags &= ~ASYNC_CHECK_CD; + else + port->gs.port.flags |= ASYNC_CHECK_CD; + +#ifdef CONFIG_MVME147_SCC + if (MACH_IS_MVME147) + brgval = (M147_SCC_PCLK + baud/2) / (16 * 2 * baud) - 2; +#endif +#ifdef CONFIG_MVME162_SCC + if (MACH_IS_MVME16x) + brgval = (MVME_SCC_PCLK + baud/2) / (16 * 2 * baud) - 2; +#endif +#ifdef CONFIG_BVME6000_SCC + if (MACH_IS_BVME6000) + brgval = (BVME_SCC_RTxC + baud/2) / (16 * 2 * baud) - 2; +#endif + /* Now we have all parameters and can go to set them: */ + local_irq_save(flags); + + /* receiver's character size and auto-enables */ + SCCmod(RX_CTRL_REG, ~(RCR_CHSIZE_MASK|RCR_AUTO_ENAB_MODE), + (chsize_map[chsize] << 6) | + ((cflag & CRTSCTS) ? RCR_AUTO_ENAB_MODE : 0)); + /* parity and stop bits (both, Tx and Rx), clock mode never changes */ + SCCmod (AUX1_CTRL_REG, + ~(A1CR_PARITY_MASK | A1CR_MODE_MASK), + ((cflag & PARENB + ? (cflag & PARODD ? A1CR_PARITY_ODD : A1CR_PARITY_EVEN) + : A1CR_PARITY_NONE) + | (cflag & CSTOPB ? A1CR_MODE_ASYNC_2 : A1CR_MODE_ASYNC_1))); + /* sender's character size, set DTR for valid baud rate */ + SCCmod(TX_CTRL_REG, ~TCR_CHSIZE_MASK, chsize_map[chsize] << 5 | TCR_DTR); + /* clock sources never change */ + /* disable BRG before changing the value */ + SCCmod(DPLL_CTRL_REG, ~DCR_BRG_ENAB, 0); + /* BRG value */ + SCCwrite(TIMER_LOW_REG, brgval & 0xff); + SCCwrite(TIMER_HIGH_REG, (brgval >> 8) & 0xff); + /* BRG enable, and clock source never changes */ + SCCmod(DPLL_CTRL_REG, 0xff, DCR_BRG_ENAB); + + local_irq_restore(flags); + + return 0; +} + + +static int scc_chars_in_buffer (void *ptr) +{ + struct scc_port *port = ptr; + SCC_ACCESS_INIT(port); + + return (SCCread (SPCOND_STATUS_REG) & SCSR_ALL_SENT) ? 0 : 1; +} + + +/* Comment taken from sx.c (2.4.0): + I haven't the foggiest why the decrement use count has to happen + here. The whole linux serial drivers stuff needs to be redesigned. + My guess is that this is a hack to minimize the impact of a bug + elsewhere. Thinking about it some more. (try it sometime) Try + running minicom on a serial port that is driven by a modularized + driver. Have the modem hangup. Then remove the driver module. Then + exit minicom. I expect an "oops". -- REW */ + +static void scc_hungup(void *ptr) +{ + scc_disable_tx_interrupts(ptr); + scc_disable_rx_interrupts(ptr); +} + + +static void scc_close(void *ptr) +{ + scc_disable_tx_interrupts(ptr); + scc_disable_rx_interrupts(ptr); +} + + +/*--------------------------------------------------------------------------- + * Internal support functions + *--------------------------------------------------------------------------*/ + +static void scc_setsignals(struct scc_port *port, int dtr, int rts) +{ + unsigned long flags; + unsigned char t; + SCC_ACCESS_INIT(port); + + local_irq_save(flags); + t = SCCread(TX_CTRL_REG); + if (dtr >= 0) t = dtr? (t | TCR_DTR): (t & ~TCR_DTR); + if (rts >= 0) t = rts? (t | TCR_RTS): (t & ~TCR_RTS); + SCCwrite(TX_CTRL_REG, t); + local_irq_restore(flags); +} + + +static void scc_send_xchar(struct tty_struct *tty, char ch) +{ + struct scc_port *port = tty->driver_data; + + port->x_char = ch; + if (ch) + scc_enable_tx_interrupts(port); +} + + +/*--------------------------------------------------------------------------- + * Driver entrypoints referenced from above + *--------------------------------------------------------------------------*/ + +static int scc_open (struct tty_struct * tty, struct file * filp) +{ + int line = tty->index; + int retval; + struct scc_port *port = &scc_ports[line]; + int i, channel = port->channel; + unsigned long flags; + SCC_ACCESS_INIT(port); +#if defined(CONFIG_MVME162_SCC) || defined(CONFIG_MVME147_SCC) + static const struct { + unsigned reg, val; + } mvme_init_tab[] = { + /* Values for MVME162 and MVME147 */ + /* no parity, 1 stop bit, async, 1:16 */ + { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, + /* parity error is special cond, ints disabled, no DMA */ + { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, + /* Rx 8 bits/char, no auto enable, Rx off */ + { RX_CTRL_REG, RCR_CHSIZE_8 }, + /* DTR off, Tx 8 bits/char, RTS off, Tx off */ + { TX_CTRL_REG, TCR_CHSIZE_8 }, + /* special features off */ + { AUX2_CTRL_REG, 0 }, + { CLK_CTRL_REG, CCR_RXCLK_BRG | CCR_TXCLK_BRG }, + { DPLL_CTRL_REG, DCR_BRG_ENAB | DCR_BRG_USE_PCLK }, + /* Start Rx */ + { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, + /* Start Tx */ + { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, + /* Ext/Stat ints: DCD only */ + { INT_CTRL_REG, ICR_ENAB_DCD_INT }, + /* Reset Ext/Stat ints */ + { COMMAND_REG, CR_EXTSTAT_RESET }, + /* ...again */ + { COMMAND_REG, CR_EXTSTAT_RESET }, + }; +#endif +#if defined(CONFIG_BVME6000_SCC) + static const struct { + unsigned reg, val; + } bvme_init_tab[] = { + /* Values for BVME6000 */ + /* no parity, 1 stop bit, async, 1:16 */ + { AUX1_CTRL_REG, A1CR_PARITY_NONE|A1CR_MODE_ASYNC_1|A1CR_CLKMODE_x16 }, + /* parity error is special cond, ints disabled, no DMA */ + { INT_AND_DMA_REG, IDR_PARERR_AS_SPCOND | IDR_RX_INT_DISAB }, + /* Rx 8 bits/char, no auto enable, Rx off */ + { RX_CTRL_REG, RCR_CHSIZE_8 }, + /* DTR off, Tx 8 bits/char, RTS off, Tx off */ + { TX_CTRL_REG, TCR_CHSIZE_8 }, + /* special features off */ + { AUX2_CTRL_REG, 0 }, + { CLK_CTRL_REG, CCR_RTxC_XTAL | CCR_RXCLK_BRG | CCR_TXCLK_BRG }, + { DPLL_CTRL_REG, DCR_BRG_ENAB }, + /* Start Rx */ + { RX_CTRL_REG, RCR_RX_ENAB | RCR_CHSIZE_8 }, + /* Start Tx */ + { TX_CTRL_REG, TCR_TX_ENAB | TCR_RTS | TCR_DTR | TCR_CHSIZE_8 }, + /* Ext/Stat ints: DCD only */ + { INT_CTRL_REG, ICR_ENAB_DCD_INT }, + /* Reset Ext/Stat ints */ + { COMMAND_REG, CR_EXTSTAT_RESET }, + /* ...again */ + { COMMAND_REG, CR_EXTSTAT_RESET }, + }; +#endif + if (!(port->gs.port.flags & ASYNC_INITIALIZED)) { + local_irq_save(flags); +#if defined(CONFIG_MVME147_SCC) || defined(CONFIG_MVME162_SCC) + if (MACH_IS_MVME147 || MACH_IS_MVME16x) { + for (i = 0; i < ARRAY_SIZE(mvme_init_tab); ++i) + SCCwrite(mvme_init_tab[i].reg, mvme_init_tab[i].val); + } +#endif +#if defined(CONFIG_BVME6000_SCC) + if (MACH_IS_BVME6000) { + for (i = 0; i < ARRAY_SIZE(bvme_init_tab); ++i) + SCCwrite(bvme_init_tab[i].reg, bvme_init_tab[i].val); + } +#endif + + /* remember status register for detection of DCD and CTS changes */ + scc_last_status_reg[channel] = SCCread(STATUS_REG); + + port->c_dcd = 0; /* Prevent initial 1->0 interrupt */ + scc_setsignals (port, 1,1); + local_irq_restore(flags); + } + + tty->driver_data = port; + port->gs.port.tty = tty; + port->gs.port.count++; + retval = gs_init_port(&port->gs); + if (retval) { + port->gs.port.count--; + return retval; + } + port->gs.port.flags |= GS_ACTIVE; + retval = gs_block_til_ready(port, filp); + + if (retval) { + port->gs.port.count--; + return retval; + } + + port->c_dcd = tty_port_carrier_raised(&port->gs.port); + + scc_enable_rx_interrupts(port); + + return 0; +} + + +static void scc_throttle (struct tty_struct * tty) +{ + struct scc_port *port = tty->driver_data; + unsigned long flags; + SCC_ACCESS_INIT(port); + + if (tty->termios->c_cflag & CRTSCTS) { + local_irq_save(flags); + SCCmod(TX_CTRL_REG, ~TCR_RTS, 0); + local_irq_restore(flags); + } + if (I_IXOFF(tty)) + scc_send_xchar(tty, STOP_CHAR(tty)); +} + + +static void scc_unthrottle (struct tty_struct * tty) +{ + struct scc_port *port = tty->driver_data; + unsigned long flags; + SCC_ACCESS_INIT(port); + + if (tty->termios->c_cflag & CRTSCTS) { + local_irq_save(flags); + SCCmod(TX_CTRL_REG, 0xff, TCR_RTS); + local_irq_restore(flags); + } + if (I_IXOFF(tty)) + scc_send_xchar(tty, START_CHAR(tty)); +} + + +static int scc_ioctl(struct tty_struct *tty, + unsigned int cmd, unsigned long arg) +{ + return -ENOIOCTLCMD; +} + + +static int scc_break_ctl(struct tty_struct *tty, int break_state) +{ + struct scc_port *port = tty->driver_data; + unsigned long flags; + SCC_ACCESS_INIT(port); + + local_irq_save(flags); + SCCmod(TX_CTRL_REG, ~TCR_SEND_BREAK, + break_state ? TCR_SEND_BREAK : 0); + local_irq_restore(flags); + return 0; +} + + +/*--------------------------------------------------------------------------- + * Serial console stuff... + *--------------------------------------------------------------------------*/ + +#define scc_delay() do { __asm__ __volatile__ (" nop; nop"); } while (0) + +static void scc_ch_write (char ch) +{ + volatile char *p = NULL; + +#ifdef CONFIG_MVME147_SCC + if (MACH_IS_MVME147) + p = (volatile char *)M147_SCC_A_ADDR; +#endif +#ifdef CONFIG_MVME162_SCC + if (MACH_IS_MVME16x) + p = (volatile char *)MVME_SCC_A_ADDR; +#endif +#ifdef CONFIG_BVME6000_SCC + if (MACH_IS_BVME6000) + p = (volatile char *)BVME_SCC_A_ADDR; +#endif + + do { + scc_delay(); + } + while (!(*p & 4)); + scc_delay(); + *p = 8; + scc_delay(); + *p = ch; +} + +/* The console must be locked when we get here. */ + +static void scc_console_write (struct console *co, const char *str, unsigned count) +{ + unsigned long flags; + + local_irq_save(flags); + + while (count--) + { + if (*str == '\n') + scc_ch_write ('\r'); + scc_ch_write (*str++); + } + local_irq_restore(flags); +} + +static struct tty_driver *scc_console_device(struct console *c, int *index) +{ + *index = c->index; + return scc_driver; +} + +static struct console sercons = { + .name = "ttyS", + .write = scc_console_write, + .device = scc_console_device, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + + +static int __init vme_scc_console_init(void) +{ + if (vme_brdtype == VME_TYPE_MVME147 || + vme_brdtype == VME_TYPE_MVME162 || + vme_brdtype == VME_TYPE_MVME172 || + vme_brdtype == VME_TYPE_BVME4000 || + vme_brdtype == VME_TYPE_BVME6000) + register_console(&sercons); + return 0; +} +console_initcall(vme_scc_console_init); -- cgit v1.2.3 From 310388beea4d00bb1c56e81ded82bdc25bdcf719 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 25 Feb 2011 09:53:41 -0800 Subject: tty: forgot to remove ipwireless from drivers/char/pcmcia/Makefile This caused a build error. Many thanks to Stephen Rothwell for pointing this mistake out. Reported-by: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman --- drivers/char/pcmcia/Makefile | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/pcmcia/Makefile b/drivers/char/pcmcia/Makefile index be8f287aa398..0aae20985d57 100644 --- a/drivers/char/pcmcia/Makefile +++ b/drivers/char/pcmcia/Makefile @@ -4,8 +4,6 @@ # Makefile for the Linux PCMCIA char device drivers. # -obj-y += ipwireless/ - obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o obj-$(CONFIG_CARDMAN_4000) += cm4000_cs.o obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o -- cgit v1.2.3 From 751b3840d216f1ecd3b91ff5251bf7703b690cd8 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 1 Mar 2011 13:12:47 +0800 Subject: pcmcia: synclink_cs: fix prototype for mgslpc_ioctl() The ioctl file pointer was removed in commit 6caa76 "tty: now phase out the ioctl file pointer for good". Thus fix the prototype for mgslpc_ioctl() and eliminate below warning: CC [M] drivers/char/pcmcia/synclink_cs.o drivers/char/pcmcia/synclink_cs.c:2787: warning: initialization from incompatible pointer type Signed-off-by: Axel Lin Cc: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/char/pcmcia/synclink_cs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index 02127cad0980..beca80bb9bdb 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -2222,13 +2222,12 @@ static int mgslpc_get_icount(struct tty_struct *tty, * Arguments: * * tty pointer to tty instance data - * file pointer to associated file object for device * cmd IOCTL command code * arg command argument/context * * Return Value: 0 if success, otherwise error code */ -static int mgslpc_ioctl(struct tty_struct *tty, struct file * file, +static int mgslpc_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; -- cgit v1.2.3 From 8d971e98a7be749445ac6eb9eb37b116f1a6d3c0 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 7 Mar 2011 12:03:07 -0800 Subject: Staging: tty: fix build with epca.c driver I forgot to move the digi*.h files from drivers/char/ to drivers/staging/tty/ Thanks to Randy for pointing out the issue. Reported-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- drivers/char/digi1.h | 100 ------------------------------ drivers/char/digiFep1.h | 136 ----------------------------------------- drivers/char/digiPCI.h | 42 ------------- drivers/staging/tty/digi1.h | 100 ++++++++++++++++++++++++++++++ drivers/staging/tty/digiFep1.h | 136 +++++++++++++++++++++++++++++++++++++++++ drivers/staging/tty/digiPCI.h | 42 +++++++++++++ 6 files changed, 278 insertions(+), 278 deletions(-) delete mode 100644 drivers/char/digi1.h delete mode 100644 drivers/char/digiFep1.h delete mode 100644 drivers/char/digiPCI.h create mode 100644 drivers/staging/tty/digi1.h create mode 100644 drivers/staging/tty/digiFep1.h create mode 100644 drivers/staging/tty/digiPCI.h (limited to 'drivers/char') diff --git a/drivers/char/digi1.h b/drivers/char/digi1.h deleted file mode 100644 index 94d4eab5d3ca..000000000000 --- a/drivers/char/digi1.h +++ /dev/null @@ -1,100 +0,0 @@ -/* Definitions for DigiBoard ditty(1) command. */ - -#if !defined(TIOCMODG) -#define TIOCMODG (('d'<<8) | 250) /* get modem ctrl state */ -#define TIOCMODS (('d'<<8) | 251) /* set modem ctrl state */ -#endif - -#if !defined(TIOCMSET) -#define TIOCMSET (('d'<<8) | 252) /* set modem ctrl state */ -#define TIOCMGET (('d'<<8) | 253) /* set modem ctrl state */ -#endif - -#if !defined(TIOCMBIC) -#define TIOCMBIC (('d'<<8) | 254) /* set modem ctrl state */ -#define TIOCMBIS (('d'<<8) | 255) /* set modem ctrl state */ -#endif - -#if !defined(TIOCSDTR) -#define TIOCSDTR (('e'<<8) | 0) /* set DTR */ -#define TIOCCDTR (('e'<<8) | 1) /* clear DTR */ -#endif - -/************************************************************************ - * Ioctl command arguments for DIGI parameters. - ************************************************************************/ -#define DIGI_GETA (('e'<<8) | 94) /* Read params */ - -#define DIGI_SETA (('e'<<8) | 95) /* Set params */ -#define DIGI_SETAW (('e'<<8) | 96) /* Drain & set params */ -#define DIGI_SETAF (('e'<<8) | 97) /* Drain, flush & set params */ - -#define DIGI_GETFLOW (('e'<<8) | 99) /* Get startc/stopc flow */ - /* control characters */ -#define DIGI_SETFLOW (('e'<<8) | 100) /* Set startc/stopc flow */ - /* control characters */ -#define DIGI_GETAFLOW (('e'<<8) | 101) /* Get Aux. startc/stopc */ - /* flow control chars */ -#define DIGI_SETAFLOW (('e'<<8) | 102) /* Set Aux. startc/stopc */ - /* flow control chars */ - -#define DIGI_GETINFO (('e'<<8) | 103) /* Fill in digi_info */ -#define DIGI_POLLER (('e'<<8) | 104) /* Turn on/off poller */ -#define DIGI_INIT (('e'<<8) | 105) /* Allow things to run. */ - -struct digiflow_struct -{ - unsigned char startc; /* flow cntl start char */ - unsigned char stopc; /* flow cntl stop char */ -}; - -typedef struct digiflow_struct digiflow_t; - - -/************************************************************************ - * Values for digi_flags - ************************************************************************/ -#define DIGI_IXON 0x0001 /* Handle IXON in the FEP */ -#define DIGI_FAST 0x0002 /* Fast baud rates */ -#define RTSPACE 0x0004 /* RTS input flow control */ -#define CTSPACE 0x0008 /* CTS output flow control */ -#define DSRPACE 0x0010 /* DSR output flow control */ -#define DCDPACE 0x0020 /* DCD output flow control */ -#define DTRPACE 0x0040 /* DTR input flow control */ -#define DIGI_FORCEDCD 0x0100 /* Force carrier */ -#define DIGI_ALTPIN 0x0200 /* Alternate RJ-45 pin config */ -#define DIGI_AIXON 0x0400 /* Aux flow control in fep */ - - -/************************************************************************ - * Values for digiDload - ************************************************************************/ -#define NORMAL 0 -#define PCI_CTL 1 - -#define SIZE8 0 -#define SIZE16 1 -#define SIZE32 2 - -/************************************************************************ - * Structure used with ioctl commands for DIGI parameters. - ************************************************************************/ -struct digi_struct -{ - unsigned short digi_flags; /* Flags (see above) */ -}; - -typedef struct digi_struct digi_t; - -struct digi_info -{ - unsigned long board; /* Which board is this ? */ - unsigned char status; /* Alive or dead */ - unsigned char type; /* see epca.h */ - unsigned char subtype; /* For future XEM, XR, etc ... */ - unsigned short numports; /* Number of ports configured */ - unsigned char *port; /* I/O Address */ - unsigned char *membase; /* DPR Address */ - unsigned char *version; /* For future ... */ - unsigned short windowData; /* For future ... */ -} ; diff --git a/drivers/char/digiFep1.h b/drivers/char/digiFep1.h deleted file mode 100644 index 3c1f1922c798..000000000000 --- a/drivers/char/digiFep1.h +++ /dev/null @@ -1,136 +0,0 @@ - -#define CSTART 0x400L -#define CMAX 0x800L -#define ISTART 0x800L -#define IMAX 0xC00L -#define CIN 0xD10L -#define GLOBAL 0xD10L -#define EIN 0xD18L -#define FEPSTAT 0xD20L -#define CHANSTRUCT 0x1000L -#define RXTXBUF 0x4000L - - -struct global_data -{ - u16 cin; - u16 cout; - u16 cstart; - u16 cmax; - u16 ein; - u16 eout; - u16 istart; - u16 imax; -}; - - -struct board_chan -{ - u32 filler1; - u32 filler2; - u16 tseg; - u16 tin; - u16 tout; - u16 tmax; - - u16 rseg; - u16 rin; - u16 rout; - u16 rmax; - - u16 tlow; - u16 rlow; - u16 rhigh; - u16 incr; - - u16 etime; - u16 edelay; - unchar *dev; - - u16 iflag; - u16 oflag; - u16 cflag; - u16 gmask; - - u16 col; - u16 delay; - u16 imask; - u16 tflush; - - u32 filler3; - u32 filler4; - u32 filler5; - u32 filler6; - - u8 num; - u8 ract; - u8 bstat; - u8 tbusy; - u8 iempty; - u8 ilow; - u8 idata; - u8 eflag; - - u8 tflag; - u8 rflag; - u8 xmask; - u8 xval; - u8 mstat; - u8 mchange; - u8 mint; - u8 lstat; - - u8 mtran; - u8 orun; - u8 startca; - u8 stopca; - u8 startc; - u8 stopc; - u8 vnext; - u8 hflow; - - u8 fillc; - u8 ochar; - u8 omask; - - u8 filler7; - u8 filler8[28]; -}; - - -#define SRXLWATER 0xE0 -#define SRXHWATER 0xE1 -#define STOUT 0xE2 -#define PAUSETX 0xE3 -#define RESUMETX 0xE4 -#define SAUXONOFFC 0xE6 -#define SENDBREAK 0xE8 -#define SETMODEM 0xE9 -#define SETIFLAGS 0xEA -#define SONOFFC 0xEB -#define STXLWATER 0xEC -#define PAUSERX 0xEE -#define RESUMERX 0xEF -#define SETBUFFER 0xF2 -#define SETCOOKED 0xF3 -#define SETHFLOW 0xF4 -#define SETCTRLFLAGS 0xF5 -#define SETVNEXT 0xF6 - - - -#define BREAK_IND 0x01 -#define LOWTX_IND 0x02 -#define EMPTYTX_IND 0x04 -#define DATA_IND 0x08 -#define MODEMCHG_IND 0x20 - -#define FEP_HUPCL 0002000 -#if 0 -#define RTS 0x02 -#define CD 0x08 -#define DSR 0x10 -#define CTS 0x20 -#define RI 0x40 -#define DTR 0x80 -#endif diff --git a/drivers/char/digiPCI.h b/drivers/char/digiPCI.h deleted file mode 100644 index 6ca7819e5069..000000000000 --- a/drivers/char/digiPCI.h +++ /dev/null @@ -1,42 +0,0 @@ -/************************************************************************* - * Defines and structure definitions for PCI BIOS Interface - *************************************************************************/ -#define PCIMAX 32 /* maximum number of PCI boards */ - - -#define PCI_VENDOR_DIGI 0x114F -#define PCI_DEVICE_EPC 0x0002 -#define PCI_DEVICE_RIGHTSWITCH 0x0003 /* For testing */ -#define PCI_DEVICE_XEM 0x0004 -#define PCI_DEVICE_XR 0x0005 -#define PCI_DEVICE_CX 0x0006 -#define PCI_DEVICE_XRJ 0x0009 /* Jupiter boards with */ -#define PCI_DEVICE_EPCJ 0x000a /* PLX 9060 chip for PCI */ - - -/* - * On the PCI boards, there is no IO space allocated - * The I/O registers will be in the first 3 bytes of the - * upper 2MB of the 4MB memory space. The board memory - * will be mapped into the low 2MB of the 4MB memory space - */ - -/* Potential location of PCI Bios from E0000 to FFFFF*/ -#define PCI_BIOS_SIZE 0x00020000 - -/* Size of Memory and I/O for PCI (4MB) */ -#define PCI_RAM_SIZE 0x00400000 - -/* Size of Memory (2MB) */ -#define PCI_MEM_SIZE 0x00200000 - -/* Offset of I/0 in Memory (2MB) */ -#define PCI_IO_OFFSET 0x00200000 - -#define MEMOUTB(basemem, pnum, setmemval) *(caddr_t)((basemem) + ( PCI_IO_OFFSET | pnum << 4 | pnum )) = (setmemval) -#define MEMINB(basemem, pnum) *(caddr_t)((basemem) + (PCI_IO_OFFSET | pnum << 4 | pnum )) /* for PCI I/O */ - - - - - diff --git a/drivers/staging/tty/digi1.h b/drivers/staging/tty/digi1.h new file mode 100644 index 000000000000..94d4eab5d3ca --- /dev/null +++ b/drivers/staging/tty/digi1.h @@ -0,0 +1,100 @@ +/* Definitions for DigiBoard ditty(1) command. */ + +#if !defined(TIOCMODG) +#define TIOCMODG (('d'<<8) | 250) /* get modem ctrl state */ +#define TIOCMODS (('d'<<8) | 251) /* set modem ctrl state */ +#endif + +#if !defined(TIOCMSET) +#define TIOCMSET (('d'<<8) | 252) /* set modem ctrl state */ +#define TIOCMGET (('d'<<8) | 253) /* set modem ctrl state */ +#endif + +#if !defined(TIOCMBIC) +#define TIOCMBIC (('d'<<8) | 254) /* set modem ctrl state */ +#define TIOCMBIS (('d'<<8) | 255) /* set modem ctrl state */ +#endif + +#if !defined(TIOCSDTR) +#define TIOCSDTR (('e'<<8) | 0) /* set DTR */ +#define TIOCCDTR (('e'<<8) | 1) /* clear DTR */ +#endif + +/************************************************************************ + * Ioctl command arguments for DIGI parameters. + ************************************************************************/ +#define DIGI_GETA (('e'<<8) | 94) /* Read params */ + +#define DIGI_SETA (('e'<<8) | 95) /* Set params */ +#define DIGI_SETAW (('e'<<8) | 96) /* Drain & set params */ +#define DIGI_SETAF (('e'<<8) | 97) /* Drain, flush & set params */ + +#define DIGI_GETFLOW (('e'<<8) | 99) /* Get startc/stopc flow */ + /* control characters */ +#define DIGI_SETFLOW (('e'<<8) | 100) /* Set startc/stopc flow */ + /* control characters */ +#define DIGI_GETAFLOW (('e'<<8) | 101) /* Get Aux. startc/stopc */ + /* flow control chars */ +#define DIGI_SETAFLOW (('e'<<8) | 102) /* Set Aux. startc/stopc */ + /* flow control chars */ + +#define DIGI_GETINFO (('e'<<8) | 103) /* Fill in digi_info */ +#define DIGI_POLLER (('e'<<8) | 104) /* Turn on/off poller */ +#define DIGI_INIT (('e'<<8) | 105) /* Allow things to run. */ + +struct digiflow_struct +{ + unsigned char startc; /* flow cntl start char */ + unsigned char stopc; /* flow cntl stop char */ +}; + +typedef struct digiflow_struct digiflow_t; + + +/************************************************************************ + * Values for digi_flags + ************************************************************************/ +#define DIGI_IXON 0x0001 /* Handle IXON in the FEP */ +#define DIGI_FAST 0x0002 /* Fast baud rates */ +#define RTSPACE 0x0004 /* RTS input flow control */ +#define CTSPACE 0x0008 /* CTS output flow control */ +#define DSRPACE 0x0010 /* DSR output flow control */ +#define DCDPACE 0x0020 /* DCD output flow control */ +#define DTRPACE 0x0040 /* DTR input flow control */ +#define DIGI_FORCEDCD 0x0100 /* Force carrier */ +#define DIGI_ALTPIN 0x0200 /* Alternate RJ-45 pin config */ +#define DIGI_AIXON 0x0400 /* Aux flow control in fep */ + + +/************************************************************************ + * Values for digiDload + ************************************************************************/ +#define NORMAL 0 +#define PCI_CTL 1 + +#define SIZE8 0 +#define SIZE16 1 +#define SIZE32 2 + +/************************************************************************ + * Structure used with ioctl commands for DIGI parameters. + ************************************************************************/ +struct digi_struct +{ + unsigned short digi_flags; /* Flags (see above) */ +}; + +typedef struct digi_struct digi_t; + +struct digi_info +{ + unsigned long board; /* Which board is this ? */ + unsigned char status; /* Alive or dead */ + unsigned char type; /* see epca.h */ + unsigned char subtype; /* For future XEM, XR, etc ... */ + unsigned short numports; /* Number of ports configured */ + unsigned char *port; /* I/O Address */ + unsigned char *membase; /* DPR Address */ + unsigned char *version; /* For future ... */ + unsigned short windowData; /* For future ... */ +} ; diff --git a/drivers/staging/tty/digiFep1.h b/drivers/staging/tty/digiFep1.h new file mode 100644 index 000000000000..3c1f1922c798 --- /dev/null +++ b/drivers/staging/tty/digiFep1.h @@ -0,0 +1,136 @@ + +#define CSTART 0x400L +#define CMAX 0x800L +#define ISTART 0x800L +#define IMAX 0xC00L +#define CIN 0xD10L +#define GLOBAL 0xD10L +#define EIN 0xD18L +#define FEPSTAT 0xD20L +#define CHANSTRUCT 0x1000L +#define RXTXBUF 0x4000L + + +struct global_data +{ + u16 cin; + u16 cout; + u16 cstart; + u16 cmax; + u16 ein; + u16 eout; + u16 istart; + u16 imax; +}; + + +struct board_chan +{ + u32 filler1; + u32 filler2; + u16 tseg; + u16 tin; + u16 tout; + u16 tmax; + + u16 rseg; + u16 rin; + u16 rout; + u16 rmax; + + u16 tlow; + u16 rlow; + u16 rhigh; + u16 incr; + + u16 etime; + u16 edelay; + unchar *dev; + + u16 iflag; + u16 oflag; + u16 cflag; + u16 gmask; + + u16 col; + u16 delay; + u16 imask; + u16 tflush; + + u32 filler3; + u32 filler4; + u32 filler5; + u32 filler6; + + u8 num; + u8 ract; + u8 bstat; + u8 tbusy; + u8 iempty; + u8 ilow; + u8 idata; + u8 eflag; + + u8 tflag; + u8 rflag; + u8 xmask; + u8 xval; + u8 mstat; + u8 mchange; + u8 mint; + u8 lstat; + + u8 mtran; + u8 orun; + u8 startca; + u8 stopca; + u8 startc; + u8 stopc; + u8 vnext; + u8 hflow; + + u8 fillc; + u8 ochar; + u8 omask; + + u8 filler7; + u8 filler8[28]; +}; + + +#define SRXLWATER 0xE0 +#define SRXHWATER 0xE1 +#define STOUT 0xE2 +#define PAUSETX 0xE3 +#define RESUMETX 0xE4 +#define SAUXONOFFC 0xE6 +#define SENDBREAK 0xE8 +#define SETMODEM 0xE9 +#define SETIFLAGS 0xEA +#define SONOFFC 0xEB +#define STXLWATER 0xEC +#define PAUSERX 0xEE +#define RESUMERX 0xEF +#define SETBUFFER 0xF2 +#define SETCOOKED 0xF3 +#define SETHFLOW 0xF4 +#define SETCTRLFLAGS 0xF5 +#define SETVNEXT 0xF6 + + + +#define BREAK_IND 0x01 +#define LOWTX_IND 0x02 +#define EMPTYTX_IND 0x04 +#define DATA_IND 0x08 +#define MODEMCHG_IND 0x20 + +#define FEP_HUPCL 0002000 +#if 0 +#define RTS 0x02 +#define CD 0x08 +#define DSR 0x10 +#define CTS 0x20 +#define RI 0x40 +#define DTR 0x80 +#endif diff --git a/drivers/staging/tty/digiPCI.h b/drivers/staging/tty/digiPCI.h new file mode 100644 index 000000000000..6ca7819e5069 --- /dev/null +++ b/drivers/staging/tty/digiPCI.h @@ -0,0 +1,42 @@ +/************************************************************************* + * Defines and structure definitions for PCI BIOS Interface + *************************************************************************/ +#define PCIMAX 32 /* maximum number of PCI boards */ + + +#define PCI_VENDOR_DIGI 0x114F +#define PCI_DEVICE_EPC 0x0002 +#define PCI_DEVICE_RIGHTSWITCH 0x0003 /* For testing */ +#define PCI_DEVICE_XEM 0x0004 +#define PCI_DEVICE_XR 0x0005 +#define PCI_DEVICE_CX 0x0006 +#define PCI_DEVICE_XRJ 0x0009 /* Jupiter boards with */ +#define PCI_DEVICE_EPCJ 0x000a /* PLX 9060 chip for PCI */ + + +/* + * On the PCI boards, there is no IO space allocated + * The I/O registers will be in the first 3 bytes of the + * upper 2MB of the 4MB memory space. The board memory + * will be mapped into the low 2MB of the 4MB memory space + */ + +/* Potential location of PCI Bios from E0000 to FFFFF*/ +#define PCI_BIOS_SIZE 0x00020000 + +/* Size of Memory and I/O for PCI (4MB) */ +#define PCI_RAM_SIZE 0x00400000 + +/* Size of Memory (2MB) */ +#define PCI_MEM_SIZE 0x00200000 + +/* Offset of I/0 in Memory (2MB) */ +#define PCI_IO_OFFSET 0x00200000 + +#define MEMOUTB(basemem, pnum, setmemval) *(caddr_t)((basemem) + ( PCI_IO_OFFSET | pnum << 4 | pnum )) = (setmemval) +#define MEMINB(basemem, pnum) *(caddr_t)((basemem) + (PCI_IO_OFFSET | pnum << 4 | pnum )) /* for PCI I/O */ + + + + + -- cgit v1.2.3 From b71dc8873427bb5bf0ce31b968c3f219a1d6d014 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 3 Mar 2011 18:38:22 +0100 Subject: tty: move cd1865.h to drivers/staging/tty/ The file is required by the specialix driver, which was moved to drivers/staging/. Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/char/cd1865.h | 263 ------------------------------------------- drivers/staging/tty/cd1865.h | 263 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 263 insertions(+), 263 deletions(-) delete mode 100644 drivers/char/cd1865.h create mode 100644 drivers/staging/tty/cd1865.h (limited to 'drivers/char') diff --git a/drivers/char/cd1865.h b/drivers/char/cd1865.h deleted file mode 100644 index 9940966e7a1d..000000000000 --- a/drivers/char/cd1865.h +++ /dev/null @@ -1,263 +0,0 @@ -/* - * linux/drivers/char/cd1865.h -- Definitions relating to the CD1865 - * for the Specialix IO8+ multiport serial driver. - * - * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl) - * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) - * - * Specialix pays for the development and support of this driver. - * Please DO contact io8-linux@specialix.co.uk if you require - * support. - * - * This driver was developped in the BitWizard linux device - * driver service. If you require a linux device driver for your - * product, please contact devices@BitWizard.nl for a quote. - * - */ - -/* - * Definitions for Driving CD180/CD1864/CD1865 based eightport serial cards. - */ - - -/* Values of choice for Interrupt ACKs */ -/* These values are "obligatory" if you use the register based - * interrupt acknowledgements. See page 99-101 of V2.0 of the CD1865 - * databook */ -#define SX_ACK_MINT 0x75 /* goes to PILR1 */ -#define SX_ACK_TINT 0x76 /* goes to PILR2 */ -#define SX_ACK_RINT 0x77 /* goes to PILR3 */ - -/* Chip ID (is used when chips ar daisy chained.) */ -#define SX_ID 0x10 - -/* Definitions for Cirrus Logic CL-CD186x 8-port async mux chip */ - -#define CD186x_NCH 8 /* Total number of channels */ -#define CD186x_TPC 16 /* Ticks per character */ -#define CD186x_NFIFO 8 /* TX FIFO size */ - - -/* Global registers */ - -#define CD186x_GIVR 0x40 /* Global Interrupt Vector Register */ -#define CD186x_GICR 0x41 /* Global Interrupting Channel Register */ -#define CD186x_PILR1 0x61 /* Priority Interrupt Level Register 1 */ -#define CD186x_PILR2 0x62 /* Priority Interrupt Level Register 2 */ -#define CD186x_PILR3 0x63 /* Priority Interrupt Level Register 3 */ -#define CD186x_CAR 0x64 /* Channel Access Register */ -#define CD186x_SRSR 0x65 /* Channel Access Register */ -#define CD186x_GFRCR 0x6b /* Global Firmware Revision Code Register */ -#define CD186x_PPRH 0x70 /* Prescaler Period Register High */ -#define CD186x_PPRL 0x71 /* Prescaler Period Register Low */ -#define CD186x_RDR 0x78 /* Receiver Data Register */ -#define CD186x_RCSR 0x7a /* Receiver Character Status Register */ -#define CD186x_TDR 0x7b /* Transmit Data Register */ -#define CD186x_EOIR 0x7f /* End of Interrupt Register */ -#define CD186x_MRAR 0x75 /* Modem Request Acknowledge register */ -#define CD186x_TRAR 0x76 /* Transmit Request Acknowledge register */ -#define CD186x_RRAR 0x77 /* Receive Request Acknowledge register */ -#define CD186x_SRCR 0x66 /* Service Request Configuration register */ - -/* Channel Registers */ - -#define CD186x_CCR 0x01 /* Channel Command Register */ -#define CD186x_IER 0x02 /* Interrupt Enable Register */ -#define CD186x_COR1 0x03 /* Channel Option Register 1 */ -#define CD186x_COR2 0x04 /* Channel Option Register 2 */ -#define CD186x_COR3 0x05 /* Channel Option Register 3 */ -#define CD186x_CCSR 0x06 /* Channel Control Status Register */ -#define CD186x_RDCR 0x07 /* Receive Data Count Register */ -#define CD186x_SCHR1 0x09 /* Special Character Register 1 */ -#define CD186x_SCHR2 0x0a /* Special Character Register 2 */ -#define CD186x_SCHR3 0x0b /* Special Character Register 3 */ -#define CD186x_SCHR4 0x0c /* Special Character Register 4 */ -#define CD186x_MCOR1 0x10 /* Modem Change Option 1 Register */ -#define CD186x_MCOR2 0x11 /* Modem Change Option 2 Register */ -#define CD186x_MCR 0x12 /* Modem Change Register */ -#define CD186x_RTPR 0x18 /* Receive Timeout Period Register */ -#define CD186x_MSVR 0x28 /* Modem Signal Value Register */ -#define CD186x_MSVRTS 0x29 /* Modem Signal Value Register */ -#define CD186x_MSVDTR 0x2a /* Modem Signal Value Register */ -#define CD186x_RBPRH 0x31 /* Receive Baud Rate Period Register High */ -#define CD186x_RBPRL 0x32 /* Receive Baud Rate Period Register Low */ -#define CD186x_TBPRH 0x39 /* Transmit Baud Rate Period Register High */ -#define CD186x_TBPRL 0x3a /* Transmit Baud Rate Period Register Low */ - - -/* Global Interrupt Vector Register (R/W) */ - -#define GIVR_ITMASK 0x07 /* Interrupt type mask */ -#define GIVR_IT_MODEM 0x01 /* Modem Signal Change Interrupt */ -#define GIVR_IT_TX 0x02 /* Transmit Data Interrupt */ -#define GIVR_IT_RCV 0x03 /* Receive Good Data Interrupt */ -#define GIVR_IT_REXC 0x07 /* Receive Exception Interrupt */ - - -/* Global Interrupt Channel Register (R/W) */ - -#define GICR_CHAN 0x1c /* Channel Number Mask */ -#define GICR_CHAN_OFF 2 /* Channel Number shift */ - - -/* Channel Address Register (R/W) */ - -#define CAR_CHAN 0x07 /* Channel Number Mask */ -#define CAR_A7 0x08 /* A7 Address Extension (unused) */ - - -/* Receive Character Status Register (R/O) */ - -#define RCSR_TOUT 0x80 /* Rx Timeout */ -#define RCSR_SCDET 0x70 /* Special Character Detected Mask */ -#define RCSR_NO_SC 0x00 /* No Special Characters Detected */ -#define RCSR_SC_1 0x10 /* Special Char 1 (or 1 & 3) Detected */ -#define RCSR_SC_2 0x20 /* Special Char 2 (or 2 & 4) Detected */ -#define RCSR_SC_3 0x30 /* Special Char 3 Detected */ -#define RCSR_SC_4 0x40 /* Special Char 4 Detected */ -#define RCSR_BREAK 0x08 /* Break has been detected */ -#define RCSR_PE 0x04 /* Parity Error */ -#define RCSR_FE 0x02 /* Frame Error */ -#define RCSR_OE 0x01 /* Overrun Error */ - - -/* Channel Command Register (R/W) (commands in groups can be OR-ed) */ - -#define CCR_HARDRESET 0x81 /* Reset the chip */ - -#define CCR_SOFTRESET 0x80 /* Soft Channel Reset */ - -#define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */ -#define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */ -#define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */ - -#define CCR_SSCH1 0x21 /* Send Special Character 1 */ - -#define CCR_SSCH2 0x22 /* Send Special Character 2 */ - -#define CCR_SSCH3 0x23 /* Send Special Character 3 */ - -#define CCR_SSCH4 0x24 /* Send Special Character 4 */ - -#define CCR_TXEN 0x18 /* Enable Transmitter */ -#define CCR_RXEN 0x12 /* Enable Receiver */ - -#define CCR_TXDIS 0x14 /* Disable Transmitter */ -#define CCR_RXDIS 0x11 /* Disable Receiver */ - - -/* Interrupt Enable Register (R/W) */ - -#define IER_DSR 0x80 /* Enable interrupt on DSR change */ -#define IER_CD 0x40 /* Enable interrupt on CD change */ -#define IER_CTS 0x20 /* Enable interrupt on CTS change */ -#define IER_RXD 0x10 /* Enable interrupt on Receive Data */ -#define IER_RXSC 0x08 /* Enable interrupt on Receive Spec. Char */ -#define IER_TXRDY 0x04 /* Enable interrupt on TX FIFO empty */ -#define IER_TXEMPTY 0x02 /* Enable interrupt on TX completely empty */ -#define IER_RET 0x01 /* Enable interrupt on RX Exc. Timeout */ - - -/* Channel Option Register 1 (R/W) */ - -#define COR1_ODDP 0x80 /* Odd Parity */ -#define COR1_PARMODE 0x60 /* Parity Mode mask */ -#define COR1_NOPAR 0x00 /* No Parity */ -#define COR1_FORCEPAR 0x20 /* Force Parity */ -#define COR1_NORMPAR 0x40 /* Normal Parity */ -#define COR1_IGNORE 0x10 /* Ignore Parity on RX */ -#define COR1_STOPBITS 0x0c /* Number of Stop Bits */ -#define COR1_1SB 0x00 /* 1 Stop Bit */ -#define COR1_15SB 0x04 /* 1.5 Stop Bits */ -#define COR1_2SB 0x08 /* 2 Stop Bits */ -#define COR1_CHARLEN 0x03 /* Character Length */ -#define COR1_5BITS 0x00 /* 5 bits */ -#define COR1_6BITS 0x01 /* 6 bits */ -#define COR1_7BITS 0x02 /* 7 bits */ -#define COR1_8BITS 0x03 /* 8 bits */ - - -/* Channel Option Register 2 (R/W) */ - -#define COR2_IXM 0x80 /* Implied XON mode */ -#define COR2_TXIBE 0x40 /* Enable In-Band (XON/XOFF) Flow Control */ -#define COR2_ETC 0x20 /* Embedded Tx Commands Enable */ -#define COR2_LLM 0x10 /* Local Loopback Mode */ -#define COR2_RLM 0x08 /* Remote Loopback Mode */ -#define COR2_RTSAO 0x04 /* RTS Automatic Output Enable */ -#define COR2_CTSAE 0x02 /* CTS Automatic Enable */ -#define COR2_DSRAE 0x01 /* DSR Automatic Enable */ - - -/* Channel Option Register 3 (R/W) */ - -#define COR3_XONCH 0x80 /* XON is a pair of characters (1 & 3) */ -#define COR3_XOFFCH 0x40 /* XOFF is a pair of characters (2 & 4) */ -#define COR3_FCT 0x20 /* Flow-Control Transparency Mode */ -#define COR3_SCDE 0x10 /* Special Character Detection Enable */ -#define COR3_RXTH 0x0f /* RX FIFO Threshold value (1-8) */ - - -/* Channel Control Status Register (R/O) */ - -#define CCSR_RXEN 0x80 /* Receiver Enabled */ -#define CCSR_RXFLOFF 0x40 /* Receive Flow Off (XOFF was sent) */ -#define CCSR_RXFLON 0x20 /* Receive Flow On (XON was sent) */ -#define CCSR_TXEN 0x08 /* Transmitter Enabled */ -#define CCSR_TXFLOFF 0x04 /* Transmit Flow Off (got XOFF) */ -#define CCSR_TXFLON 0x02 /* Transmit Flow On (got XON) */ - - -/* Modem Change Option Register 1 (R/W) */ - -#define MCOR1_DSRZD 0x80 /* Detect 0->1 transition of DSR */ -#define MCOR1_CDZD 0x40 /* Detect 0->1 transition of CD */ -#define MCOR1_CTSZD 0x20 /* Detect 0->1 transition of CTS */ -#define MCOR1_DTRTH 0x0f /* Auto DTR flow control Threshold (1-8) */ -#define MCOR1_NODTRFC 0x0 /* Automatic DTR flow control disabled */ - - -/* Modem Change Option Register 2 (R/W) */ - -#define MCOR2_DSROD 0x80 /* Detect 1->0 transition of DSR */ -#define MCOR2_CDOD 0x40 /* Detect 1->0 transition of CD */ -#define MCOR2_CTSOD 0x20 /* Detect 1->0 transition of CTS */ - -/* Modem Change Register (R/W) */ - -#define MCR_DSRCHG 0x80 /* DSR Changed */ -#define MCR_CDCHG 0x40 /* CD Changed */ -#define MCR_CTSCHG 0x20 /* CTS Changed */ - - -/* Modem Signal Value Register (R/W) */ - -#define MSVR_DSR 0x80 /* Current state of DSR input */ -#define MSVR_CD 0x40 /* Current state of CD input */ -#define MSVR_CTS 0x20 /* Current state of CTS input */ -#define MSVR_DTR 0x02 /* Current state of DTR output */ -#define MSVR_RTS 0x01 /* Current state of RTS output */ - - -/* Escape characters */ - -#define CD186x_C_ESC 0x00 /* Escape character */ -#define CD186x_C_SBRK 0x81 /* Start sending BREAK */ -#define CD186x_C_DELAY 0x82 /* Delay output */ -#define CD186x_C_EBRK 0x83 /* Stop sending BREAK */ - -#define SRSR_RREQint 0x10 /* This chip wants "rec" serviced */ -#define SRSR_TREQint 0x04 /* This chip wants "transmit" serviced */ -#define SRSR_MREQint 0x01 /* This chip wants "mdm change" serviced */ - - - -#define SRCR_PKGTYPE 0x80 -#define SRCR_REGACKEN 0x40 -#define SRCR_DAISYEN 0x20 -#define SRCR_GLOBPRI 0x10 -#define SRCR_UNFAIR 0x08 -#define SRCR_AUTOPRI 0x02 -#define SRCR_PRISEL 0x01 - - diff --git a/drivers/staging/tty/cd1865.h b/drivers/staging/tty/cd1865.h new file mode 100644 index 000000000000..9940966e7a1d --- /dev/null +++ b/drivers/staging/tty/cd1865.h @@ -0,0 +1,263 @@ +/* + * linux/drivers/char/cd1865.h -- Definitions relating to the CD1865 + * for the Specialix IO8+ multiport serial driver. + * + * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl) + * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) + * + * Specialix pays for the development and support of this driver. + * Please DO contact io8-linux@specialix.co.uk if you require + * support. + * + * This driver was developped in the BitWizard linux device + * driver service. If you require a linux device driver for your + * product, please contact devices@BitWizard.nl for a quote. + * + */ + +/* + * Definitions for Driving CD180/CD1864/CD1865 based eightport serial cards. + */ + + +/* Values of choice for Interrupt ACKs */ +/* These values are "obligatory" if you use the register based + * interrupt acknowledgements. See page 99-101 of V2.0 of the CD1865 + * databook */ +#define SX_ACK_MINT 0x75 /* goes to PILR1 */ +#define SX_ACK_TINT 0x76 /* goes to PILR2 */ +#define SX_ACK_RINT 0x77 /* goes to PILR3 */ + +/* Chip ID (is used when chips ar daisy chained.) */ +#define SX_ID 0x10 + +/* Definitions for Cirrus Logic CL-CD186x 8-port async mux chip */ + +#define CD186x_NCH 8 /* Total number of channels */ +#define CD186x_TPC 16 /* Ticks per character */ +#define CD186x_NFIFO 8 /* TX FIFO size */ + + +/* Global registers */ + +#define CD186x_GIVR 0x40 /* Global Interrupt Vector Register */ +#define CD186x_GICR 0x41 /* Global Interrupting Channel Register */ +#define CD186x_PILR1 0x61 /* Priority Interrupt Level Register 1 */ +#define CD186x_PILR2 0x62 /* Priority Interrupt Level Register 2 */ +#define CD186x_PILR3 0x63 /* Priority Interrupt Level Register 3 */ +#define CD186x_CAR 0x64 /* Channel Access Register */ +#define CD186x_SRSR 0x65 /* Channel Access Register */ +#define CD186x_GFRCR 0x6b /* Global Firmware Revision Code Register */ +#define CD186x_PPRH 0x70 /* Prescaler Period Register High */ +#define CD186x_PPRL 0x71 /* Prescaler Period Register Low */ +#define CD186x_RDR 0x78 /* Receiver Data Register */ +#define CD186x_RCSR 0x7a /* Receiver Character Status Register */ +#define CD186x_TDR 0x7b /* Transmit Data Register */ +#define CD186x_EOIR 0x7f /* End of Interrupt Register */ +#define CD186x_MRAR 0x75 /* Modem Request Acknowledge register */ +#define CD186x_TRAR 0x76 /* Transmit Request Acknowledge register */ +#define CD186x_RRAR 0x77 /* Receive Request Acknowledge register */ +#define CD186x_SRCR 0x66 /* Service Request Configuration register */ + +/* Channel Registers */ + +#define CD186x_CCR 0x01 /* Channel Command Register */ +#define CD186x_IER 0x02 /* Interrupt Enable Register */ +#define CD186x_COR1 0x03 /* Channel Option Register 1 */ +#define CD186x_COR2 0x04 /* Channel Option Register 2 */ +#define CD186x_COR3 0x05 /* Channel Option Register 3 */ +#define CD186x_CCSR 0x06 /* Channel Control Status Register */ +#define CD186x_RDCR 0x07 /* Receive Data Count Register */ +#define CD186x_SCHR1 0x09 /* Special Character Register 1 */ +#define CD186x_SCHR2 0x0a /* Special Character Register 2 */ +#define CD186x_SCHR3 0x0b /* Special Character Register 3 */ +#define CD186x_SCHR4 0x0c /* Special Character Register 4 */ +#define CD186x_MCOR1 0x10 /* Modem Change Option 1 Register */ +#define CD186x_MCOR2 0x11 /* Modem Change Option 2 Register */ +#define CD186x_MCR 0x12 /* Modem Change Register */ +#define CD186x_RTPR 0x18 /* Receive Timeout Period Register */ +#define CD186x_MSVR 0x28 /* Modem Signal Value Register */ +#define CD186x_MSVRTS 0x29 /* Modem Signal Value Register */ +#define CD186x_MSVDTR 0x2a /* Modem Signal Value Register */ +#define CD186x_RBPRH 0x31 /* Receive Baud Rate Period Register High */ +#define CD186x_RBPRL 0x32 /* Receive Baud Rate Period Register Low */ +#define CD186x_TBPRH 0x39 /* Transmit Baud Rate Period Register High */ +#define CD186x_TBPRL 0x3a /* Transmit Baud Rate Period Register Low */ + + +/* Global Interrupt Vector Register (R/W) */ + +#define GIVR_ITMASK 0x07 /* Interrupt type mask */ +#define GIVR_IT_MODEM 0x01 /* Modem Signal Change Interrupt */ +#define GIVR_IT_TX 0x02 /* Transmit Data Interrupt */ +#define GIVR_IT_RCV 0x03 /* Receive Good Data Interrupt */ +#define GIVR_IT_REXC 0x07 /* Receive Exception Interrupt */ + + +/* Global Interrupt Channel Register (R/W) */ + +#define GICR_CHAN 0x1c /* Channel Number Mask */ +#define GICR_CHAN_OFF 2 /* Channel Number shift */ + + +/* Channel Address Register (R/W) */ + +#define CAR_CHAN 0x07 /* Channel Number Mask */ +#define CAR_A7 0x08 /* A7 Address Extension (unused) */ + + +/* Receive Character Status Register (R/O) */ + +#define RCSR_TOUT 0x80 /* Rx Timeout */ +#define RCSR_SCDET 0x70 /* Special Character Detected Mask */ +#define RCSR_NO_SC 0x00 /* No Special Characters Detected */ +#define RCSR_SC_1 0x10 /* Special Char 1 (or 1 & 3) Detected */ +#define RCSR_SC_2 0x20 /* Special Char 2 (or 2 & 4) Detected */ +#define RCSR_SC_3 0x30 /* Special Char 3 Detected */ +#define RCSR_SC_4 0x40 /* Special Char 4 Detected */ +#define RCSR_BREAK 0x08 /* Break has been detected */ +#define RCSR_PE 0x04 /* Parity Error */ +#define RCSR_FE 0x02 /* Frame Error */ +#define RCSR_OE 0x01 /* Overrun Error */ + + +/* Channel Command Register (R/W) (commands in groups can be OR-ed) */ + +#define CCR_HARDRESET 0x81 /* Reset the chip */ + +#define CCR_SOFTRESET 0x80 /* Soft Channel Reset */ + +#define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */ +#define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */ +#define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */ + +#define CCR_SSCH1 0x21 /* Send Special Character 1 */ + +#define CCR_SSCH2 0x22 /* Send Special Character 2 */ + +#define CCR_SSCH3 0x23 /* Send Special Character 3 */ + +#define CCR_SSCH4 0x24 /* Send Special Character 4 */ + +#define CCR_TXEN 0x18 /* Enable Transmitter */ +#define CCR_RXEN 0x12 /* Enable Receiver */ + +#define CCR_TXDIS 0x14 /* Disable Transmitter */ +#define CCR_RXDIS 0x11 /* Disable Receiver */ + + +/* Interrupt Enable Register (R/W) */ + +#define IER_DSR 0x80 /* Enable interrupt on DSR change */ +#define IER_CD 0x40 /* Enable interrupt on CD change */ +#define IER_CTS 0x20 /* Enable interrupt on CTS change */ +#define IER_RXD 0x10 /* Enable interrupt on Receive Data */ +#define IER_RXSC 0x08 /* Enable interrupt on Receive Spec. Char */ +#define IER_TXRDY 0x04 /* Enable interrupt on TX FIFO empty */ +#define IER_TXEMPTY 0x02 /* Enable interrupt on TX completely empty */ +#define IER_RET 0x01 /* Enable interrupt on RX Exc. Timeout */ + + +/* Channel Option Register 1 (R/W) */ + +#define COR1_ODDP 0x80 /* Odd Parity */ +#define COR1_PARMODE 0x60 /* Parity Mode mask */ +#define COR1_NOPAR 0x00 /* No Parity */ +#define COR1_FORCEPAR 0x20 /* Force Parity */ +#define COR1_NORMPAR 0x40 /* Normal Parity */ +#define COR1_IGNORE 0x10 /* Ignore Parity on RX */ +#define COR1_STOPBITS 0x0c /* Number of Stop Bits */ +#define COR1_1SB 0x00 /* 1 Stop Bit */ +#define COR1_15SB 0x04 /* 1.5 Stop Bits */ +#define COR1_2SB 0x08 /* 2 Stop Bits */ +#define COR1_CHARLEN 0x03 /* Character Length */ +#define COR1_5BITS 0x00 /* 5 bits */ +#define COR1_6BITS 0x01 /* 6 bits */ +#define COR1_7BITS 0x02 /* 7 bits */ +#define COR1_8BITS 0x03 /* 8 bits */ + + +/* Channel Option Register 2 (R/W) */ + +#define COR2_IXM 0x80 /* Implied XON mode */ +#define COR2_TXIBE 0x40 /* Enable In-Band (XON/XOFF) Flow Control */ +#define COR2_ETC 0x20 /* Embedded Tx Commands Enable */ +#define COR2_LLM 0x10 /* Local Loopback Mode */ +#define COR2_RLM 0x08 /* Remote Loopback Mode */ +#define COR2_RTSAO 0x04 /* RTS Automatic Output Enable */ +#define COR2_CTSAE 0x02 /* CTS Automatic Enable */ +#define COR2_DSRAE 0x01 /* DSR Automatic Enable */ + + +/* Channel Option Register 3 (R/W) */ + +#define COR3_XONCH 0x80 /* XON is a pair of characters (1 & 3) */ +#define COR3_XOFFCH 0x40 /* XOFF is a pair of characters (2 & 4) */ +#define COR3_FCT 0x20 /* Flow-Control Transparency Mode */ +#define COR3_SCDE 0x10 /* Special Character Detection Enable */ +#define COR3_RXTH 0x0f /* RX FIFO Threshold value (1-8) */ + + +/* Channel Control Status Register (R/O) */ + +#define CCSR_RXEN 0x80 /* Receiver Enabled */ +#define CCSR_RXFLOFF 0x40 /* Receive Flow Off (XOFF was sent) */ +#define CCSR_RXFLON 0x20 /* Receive Flow On (XON was sent) */ +#define CCSR_TXEN 0x08 /* Transmitter Enabled */ +#define CCSR_TXFLOFF 0x04 /* Transmit Flow Off (got XOFF) */ +#define CCSR_TXFLON 0x02 /* Transmit Flow On (got XON) */ + + +/* Modem Change Option Register 1 (R/W) */ + +#define MCOR1_DSRZD 0x80 /* Detect 0->1 transition of DSR */ +#define MCOR1_CDZD 0x40 /* Detect 0->1 transition of CD */ +#define MCOR1_CTSZD 0x20 /* Detect 0->1 transition of CTS */ +#define MCOR1_DTRTH 0x0f /* Auto DTR flow control Threshold (1-8) */ +#define MCOR1_NODTRFC 0x0 /* Automatic DTR flow control disabled */ + + +/* Modem Change Option Register 2 (R/W) */ + +#define MCOR2_DSROD 0x80 /* Detect 1->0 transition of DSR */ +#define MCOR2_CDOD 0x40 /* Detect 1->0 transition of CD */ +#define MCOR2_CTSOD 0x20 /* Detect 1->0 transition of CTS */ + +/* Modem Change Register (R/W) */ + +#define MCR_DSRCHG 0x80 /* DSR Changed */ +#define MCR_CDCHG 0x40 /* CD Changed */ +#define MCR_CTSCHG 0x20 /* CTS Changed */ + + +/* Modem Signal Value Register (R/W) */ + +#define MSVR_DSR 0x80 /* Current state of DSR input */ +#define MSVR_CD 0x40 /* Current state of CD input */ +#define MSVR_CTS 0x20 /* Current state of CTS input */ +#define MSVR_DTR 0x02 /* Current state of DTR output */ +#define MSVR_RTS 0x01 /* Current state of RTS output */ + + +/* Escape characters */ + +#define CD186x_C_ESC 0x00 /* Escape character */ +#define CD186x_C_SBRK 0x81 /* Start sending BREAK */ +#define CD186x_C_DELAY 0x82 /* Delay output */ +#define CD186x_C_EBRK 0x83 /* Stop sending BREAK */ + +#define SRSR_RREQint 0x10 /* This chip wants "rec" serviced */ +#define SRSR_TREQint 0x04 /* This chip wants "transmit" serviced */ +#define SRSR_MREQint 0x01 /* This chip wants "mdm change" serviced */ + + + +#define SRCR_PKGTYPE 0x80 +#define SRCR_REGACKEN 0x40 +#define SRCR_DAISYEN 0x20 +#define SRCR_GLOBPRI 0x10 +#define SRCR_UNFAIR 0x08 +#define SRCR_AUTOPRI 0x02 +#define SRCR_PRISEL 0x01 + + -- cgit v1.2.3