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path: root/drivers/tty/serial/crisv10.c
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Diffstat (limited to 'drivers/tty/serial/crisv10.c')
-rw-r--r--drivers/tty/serial/crisv10.c168
1 files changed, 73 insertions, 95 deletions
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 5f37c31e32bc..477f22f773fc 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -169,7 +169,6 @@ static int get_lsr_info(struct e100_serial *info, unsigned int *value);
#define DEF_BAUD 115200 /* 115.2 kbit/s */
-#define STD_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
#define DEF_RX 0x20 /* or SERIAL_CTRL_W >> 8 */
/* Default value of tx_ctrl register: has txd(bit 7)=1 (idle) as default */
#define DEF_TX 0x80 /* or SERIAL_CTRL_B */
@@ -246,7 +245,6 @@ static struct e100_serial rs_table[] = {
.ifirstadr = R_DMA_CH7_FIRST,
.icmdadr = R_DMA_CH7_CMD,
.idescradr = R_DMA_CH7_DESCR,
- .flags = STD_FLAGS,
.rx_ctrl = DEF_RX,
.tx_ctrl = DEF_TX,
.iseteop = 2,
@@ -300,7 +298,6 @@ static struct e100_serial rs_table[] = {
.ifirstadr = R_DMA_CH9_FIRST,
.icmdadr = R_DMA_CH9_CMD,
.idescradr = R_DMA_CH9_DESCR,
- .flags = STD_FLAGS,
.rx_ctrl = DEF_RX,
.tx_ctrl = DEF_TX,
.iseteop = 3,
@@ -356,7 +353,6 @@ static struct e100_serial rs_table[] = {
.ifirstadr = R_DMA_CH3_FIRST,
.icmdadr = R_DMA_CH3_CMD,
.idescradr = R_DMA_CH3_DESCR,
- .flags = STD_FLAGS,
.rx_ctrl = DEF_RX,
.tx_ctrl = DEF_TX,
.iseteop = 0,
@@ -410,7 +406,6 @@ static struct e100_serial rs_table[] = {
.ifirstadr = R_DMA_CH5_FIRST,
.icmdadr = R_DMA_CH5_CMD,
.idescradr = R_DMA_CH5_DESCR,
- .flags = STD_FLAGS,
.rx_ctrl = DEF_RX,
.tx_ctrl = DEF_TX,
.iseteop = 1,
@@ -2263,8 +2258,7 @@ TODO: The break will be delayed until an F or V character is received.
*/
-static
-struct e100_serial * handle_ser_rx_interrupt_no_dma(struct e100_serial *info)
+static void handle_ser_rx_interrupt_no_dma(struct e100_serial *info)
{
unsigned long data_read;
@@ -2370,10 +2364,9 @@ more_data:
}
tty_flip_buffer_push(&info->port);
- return info;
}
-static struct e100_serial* handle_ser_rx_interrupt(struct e100_serial *info)
+static void handle_ser_rx_interrupt(struct e100_serial *info)
{
unsigned char rstat;
@@ -2382,7 +2375,8 @@ static struct e100_serial* handle_ser_rx_interrupt(struct e100_serial *info)
#endif
/* DEBUG_LOG(info->line, "ser_interrupt stat %03X\n", rstat | (i << 8)); */
if (!info->uses_dma_in) {
- return handle_ser_rx_interrupt_no_dma(info);
+ handle_ser_rx_interrupt_no_dma(info);
+ return;
}
/* DMA is used */
rstat = info->ioport[REG_STATUS];
@@ -2489,7 +2483,6 @@ static struct e100_serial* handle_ser_rx_interrupt(struct e100_serial *info)
/* Restarting the DMA never hurts */
*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, restart);
START_FLUSH_FAST_TIMER(info, "ser_int");
- return info;
} /* handle_ser_rx_interrupt */
static void handle_ser_tx_interrupt(struct e100_serial *info)
@@ -2534,8 +2527,7 @@ static void handle_ser_tx_interrupt(struct e100_serial *info)
}
/* Normal char-by-char interrupt */
if (info->xmit.head == info->xmit.tail
- || info->port.tty->stopped
- || info->port.tty->hw_stopped) {
+ || info->port.tty->stopped) {
DFLOW(DEBUG_LOG(info->line, "tx_int: stopped %i\n",
info->port.tty->stopped));
e100_disable_serial_tx_ready_irq(info);
@@ -2722,7 +2714,7 @@ startup(struct e100_serial * info)
/* if it was already initialized, skip this */
- if (info->flags & ASYNC_INITIALIZED) {
+ if (info->port.flags & ASYNC_INITIALIZED) {
local_irq_restore(flags);
free_page(xmit_page);
return 0;
@@ -2847,7 +2839,7 @@ startup(struct e100_serial * info)
#endif /* CONFIG_SVINTO_SIM */
- info->flags |= ASYNC_INITIALIZED;
+ info->port.flags |= ASYNC_INITIALIZED;
local_irq_restore(flags);
return 0;
@@ -2892,7 +2884,7 @@ shutdown(struct e100_serial * info)
#endif /* CONFIG_SVINTO_SIM */
- if (!(info->flags & ASYNC_INITIALIZED))
+ if (!(info->port.flags & ASYNC_INITIALIZED))
return;
#ifdef SERIAL_DEBUG_OPEN
@@ -2923,7 +2915,7 @@ shutdown(struct e100_serial * info)
if (info->port.tty)
set_bit(TTY_IO_ERROR, &info->port.tty->flags);
- info->flags &= ~ASYNC_INITIALIZED;
+ info->port.flags &= ~ASYNC_INITIALIZED;
local_irq_restore(flags);
}
@@ -2948,7 +2940,7 @@ change_speed(struct e100_serial *info)
/* possibly, the tx/rx should be disabled first to do this safely */
/* change baud-rate and write it to the hardware */
- if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) {
+ if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) {
/* Special baudrate */
u32 mask = 0xFF << (info->line*8); /* Each port has 8 bits */
unsigned long alt_source =
@@ -3098,7 +3090,6 @@ rs_flush_chars(struct tty_struct *tty)
if (info->tr_running ||
info->xmit.head == info->xmit.tail ||
tty->stopped ||
- tty->hw_stopped ||
!info->xmit.buf)
return;
@@ -3176,7 +3167,6 @@ static int rs_raw_write(struct tty_struct *tty,
if (info->xmit.head != info->xmit.tail &&
!tty->stopped &&
- !tty->hw_stopped &&
!info->tr_running) {
start_transmit(info);
}
@@ -3400,10 +3390,10 @@ get_serial_info(struct e100_serial * info,
tmp.line = info->line;
tmp.port = (int)info->ioport;
tmp.irq = info->irq;
- tmp.flags = info->flags;
+ tmp.flags = info->port.flags;
tmp.baud_base = info->baud_base;
- tmp.close_delay = info->close_delay;
- tmp.closing_wait = info->closing_wait;
+ tmp.close_delay = info->port.close_delay;
+ tmp.closing_wait = info->port.closing_wait;
tmp.custom_divisor = info->custom_divisor;
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
return -EFAULT;
@@ -3425,16 +3415,16 @@ set_serial_info(struct e100_serial *info,
if (!capable(CAP_SYS_ADMIN)) {
if ((new_serial.type != info->type) ||
- (new_serial.close_delay != info->close_delay) ||
+ (new_serial.close_delay != info->port.close_delay) ||
((new_serial.flags & ~ASYNC_USR_MASK) !=
- (info->flags & ~ASYNC_USR_MASK)))
+ (info->port.flags & ~ASYNC_USR_MASK)))
return -EPERM;
- info->flags = ((info->flags & ~ASYNC_USR_MASK) |
+ info->port.flags = ((info->port.flags & ~ASYNC_USR_MASK) |
(new_serial.flags & ASYNC_USR_MASK));
goto check_and_exit;
}
- if (info->count > 1)
+ if (info->port.count > 1)
return -EBUSY;
/*
@@ -3443,16 +3433,16 @@ set_serial_info(struct e100_serial *info,
*/
info->baud_base = new_serial.baud_base;
- info->flags = ((info->flags & ~ASYNC_FLAGS) |
+ info->port.flags = ((info->port.flags & ~ASYNC_FLAGS) |
(new_serial.flags & ASYNC_FLAGS));
info->custom_divisor = new_serial.custom_divisor;
info->type = new_serial.type;
- info->close_delay = new_serial.close_delay;
- info->closing_wait = new_serial.closing_wait;
- info->port.low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+ info->port.close_delay = new_serial.close_delay;
+ info->port.closing_wait = new_serial.closing_wait;
+ info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
check_and_exit:
- if (info->flags & ASYNC_INITIALIZED) {
+ if (info->port.flags & ASYNC_INITIALIZED) {
change_speed(info);
} else
retval = startup(info);
@@ -3733,10 +3723,8 @@ rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
/* Handle turning off CRTSCTS */
if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios.c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
+ !(tty->termios.c_cflag & CRTSCTS))
rs_start(tty);
- }
}
@@ -3772,7 +3760,7 @@ rs_close(struct tty_struct *tty, struct file * filp)
printk("[%d] rs_close ttyS%d, count = %d\n", current->pid,
info->line, info->count);
#endif
- if ((tty->count == 1) && (info->count != 1)) {
+ if ((tty->count == 1) && (info->port.count != 1)) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. Info->count should always
@@ -3782,32 +3770,32 @@ rs_close(struct tty_struct *tty, struct file * filp)
*/
printk(KERN_ERR
"rs_close: bad serial port count; tty->count is 1, "
- "info->count is %d\n", info->count);
- info->count = 1;
+ "info->count is %d\n", info->port.count);
+ info->port.count = 1;
}
- if (--info->count < 0) {
+ if (--info->port.count < 0) {
printk(KERN_ERR "rs_close: bad serial port count for ttyS%d: %d\n",
- info->line, info->count);
- info->count = 0;
+ info->line, info->port.count);
+ info->port.count = 0;
}
- if (info->count) {
+ if (info->port.count) {
local_irq_restore(flags);
return;
}
- info->flags |= ASYNC_CLOSING;
+ info->port.flags |= ASYNC_CLOSING;
/*
* Save the termios structure, since this port may have
* separate termios for callout and dialin.
*/
- if (info->flags & ASYNC_NORMAL_ACTIVE)
+ if (info->port.flags & ASYNC_NORMAL_ACTIVE)
info->normal_termios = tty->termios;
/*
* 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);
+ if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
+ tty_wait_until_sent(tty, info->port.closing_wait);
/*
* At this point we stop accepting input. To do this, we
* disable the serial receiver and the DMA receive interrupt.
@@ -3820,7 +3808,7 @@ rs_close(struct tty_struct *tty, struct file * filp)
e100_disable_rx(info);
e100_disable_rx_irq(info);
- if (info->flags & ASYNC_INITIALIZED) {
+ if (info->port.flags & ASYNC_INITIALIZED) {
/*
* Before we drop DTR, make sure the UART transmitter
* has completely drained; this is especially
@@ -3836,13 +3824,13 @@ rs_close(struct tty_struct *tty, struct file * filp)
tty->closing = 0;
info->event = 0;
info->port.tty = NULL;
- if (info->blocked_open) {
- if (info->close_delay)
- schedule_timeout_interruptible(info->close_delay);
- wake_up_interruptible(&info->open_wait);
+ if (info->port.blocked_open) {
+ if (info->port.close_delay)
+ schedule_timeout_interruptible(info->port.close_delay);
+ wake_up_interruptible(&info->port.open_wait);
}
- info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
- wake_up_interruptible(&info->close_wait);
+ info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
+ wake_up_interruptible(&info->port.close_wait);
local_irq_restore(flags);
/* port closed */
@@ -3935,10 +3923,10 @@ rs_hangup(struct tty_struct *tty)
rs_flush_buffer(tty);
shutdown(info);
info->event = 0;
- info->count = 0;
- info->flags &= ~ASYNC_NORMAL_ACTIVE;
+ info->port.count = 0;
+ info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
info->port.tty = NULL;
- wake_up_interruptible(&info->open_wait);
+ wake_up_interruptible(&info->port.open_wait);
}
/*
@@ -3960,11 +3948,11 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
* until it's done, and then try again.
*/
if (tty_hung_up_p(filp) ||
- (info->flags & ASYNC_CLOSING)) {
- wait_event_interruptible_tty(tty, info->close_wait,
- !(info->flags & ASYNC_CLOSING));
+ (info->port.flags & ASYNC_CLOSING)) {
+ wait_event_interruptible_tty(tty, info->port.close_wait,
+ !(info->port.flags & ASYNC_CLOSING));
#ifdef SERIAL_DO_RESTART
- if (info->flags & ASYNC_HUP_NOTIFY)
+ if (info->port.flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
@@ -3979,7 +3967,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
- info->flags |= ASYNC_NORMAL_ACTIVE;
+ info->port.flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -3990,23 +3978,23 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
/*
* 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
+ * this loop, info->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(&info->open_wait, &wait);
+ add_wait_queue(&info->port.open_wait, &wait);
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready before block: ttyS%d, count = %d\n",
- info->line, info->count);
+ info->line, info->port.count);
#endif
local_irq_save(flags);
if (!tty_hung_up_p(filp)) {
extra_count++;
- info->count--;
+ info->port.count--;
}
local_irq_restore(flags);
- info->blocked_open++;
+ info->port.blocked_open++;
while (1) {
local_irq_save(flags);
/* assert RTS and DTR */
@@ -4015,9 +4003,9 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
local_irq_restore(flags);
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
- !(info->flags & ASYNC_INITIALIZED)) {
+ !(info->port.flags & ASYNC_INITIALIZED)) {
#ifdef SERIAL_DO_RESTART
- if (info->flags & ASYNC_HUP_NOTIFY)
+ if (info->port.flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
@@ -4026,7 +4014,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
#endif
break;
}
- if (!(info->flags & ASYNC_CLOSING) && do_clocal)
+ if (!(info->port.flags & ASYNC_CLOSING) && do_clocal)
/* && (do_clocal || DCD_IS_ASSERTED) */
break;
if (signal_pending(current)) {
@@ -4035,24 +4023,24 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
}
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready blocking: ttyS%d, count = %d\n",
- info->line, info->count);
+ info->line, info->port.count);
#endif
tty_unlock(tty);
schedule();
tty_lock(tty);
}
set_current_state(TASK_RUNNING);
- remove_wait_queue(&info->open_wait, &wait);
+ remove_wait_queue(&info->port.open_wait, &wait);
if (extra_count)
- info->count++;
- info->blocked_open--;
+ info->port.count++;
+ info->port.blocked_open--;
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready after blocking: ttyS%d, count = %d\n",
- info->line, info->count);
+ info->line, info->port.count);
#endif
if (retval)
return retval;
- info->flags |= ASYNC_NORMAL_ACTIVE;
+ info->port.flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
@@ -4086,24 +4074,24 @@ rs_open(struct tty_struct *tty, struct file * filp)
#ifdef SERIAL_DEBUG_OPEN
printk("[%d] rs_open %s, count = %d\n", current->pid, tty->name,
- info->count);
+ info->port.count);
#endif
- info->count++;
+ info->port.count++;
tty->driver_data = info;
info->port.tty = tty;
- info->port.low_latency = !!(info->flags & ASYNC_LOW_LATENCY);
+ info->port.low_latency = !!(info->port.flags & ASYNC_LOW_LATENCY);
/*
* If the port is in the middle of closing, bail out now
*/
if (tty_hung_up_p(filp) ||
- (info->flags & ASYNC_CLOSING)) {
- wait_event_interruptible_tty(tty, info->close_wait,
- !(info->flags & ASYNC_CLOSING));
+ (info->port.flags & ASYNC_CLOSING)) {
+ wait_event_interruptible_tty(tty, info->port.close_wait,
+ !(info->port.flags & ASYNC_CLOSING));
#ifdef SERIAL_DO_RESTART
- return ((info->flags & ASYNC_HUP_NOTIFY) ?
+ return ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS);
#else
return -EAGAIN;
@@ -4113,7 +4101,7 @@ rs_open(struct tty_struct *tty, struct file * filp)
/*
* If DMA is enabled try to allocate the irq's.
*/
- if (info->count == 1) {
+ if (info->port.count == 1) {
allocated_resources = 1;
if (info->dma_in_enabled) {
if (request_irq(info->dma_in_irq_nbr,
@@ -4186,7 +4174,7 @@ rs_open(struct tty_struct *tty, struct file * filp)
if (allocated_resources)
deinit_port(info);
- /* FIXME Decrease count info->count here too? */
+ /* FIXME Decrease count info->port.count here too? */
return retval;
}
@@ -4203,7 +4191,7 @@ rs_open(struct tty_struct *tty, struct file * filp)
return retval;
}
- if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
+ if ((info->port.count == 1) && (info->port.flags & ASYNC_SPLIT_TERMIOS)) {
tty->termios = info->normal_termios;
change_speed(info);
}
@@ -4256,9 +4244,6 @@ static void seq_line_info(struct seq_file *m, struct e100_serial *info)
if (info->port.tty->stopped)
seq_printf(m, " stopped:%i",
(int)info->port.tty->stopped);
- if (info->port.tty->hw_stopped)
- seq_printf(m, " hw_stopped:%i",
- (int)info->port.tty->hw_stopped);
}
{
@@ -4455,16 +4440,9 @@ static int __init rs_init(void)
info->forced_eop = 0;
info->baud_base = DEF_BAUD_BASE;
info->custom_divisor = 0;
- info->flags = 0;
- info->close_delay = 5*HZ/10;
- info->closing_wait = 30*HZ;
info->x_char = 0;
info->event = 0;
- info->count = 0;
- info->blocked_open = 0;
info->normal_termios = driver->init_termios;
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
info->xmit.buf = NULL;
info->xmit.tail = info->xmit.head = 0;
info->first_recv_buffer = info->last_recv_buffer = NULL;