diff options
Diffstat (limited to 'drivers/char/istallion.c')
| -rw-r--r-- | drivers/char/istallion.c | 4507 |
1 files changed, 0 insertions, 4507 deletions
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c deleted file mode 100644 index 7c6de4c92458..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 <linux/module.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/serial.h> -#include <linux/seq_file.h> -#include <linux/cdk.h> -#include <linux/comstats.h> -#include <linux/istallion.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/wait.h> -#include <linux/eisa.h> -#include <linux/ctype.h> - -#include <asm/io.h> -#include <asm/uaccess.h> - -#include <linux/pci.h> - -/*****************************************************************************/ - -/* - * 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, struct file *file, 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 file *file) -{ - 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, struct file *file, - 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, struct file *file, 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); |