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Diffstat (limited to 'drivers/char/watchdog/mixcomwd.c')
-rw-r--r--drivers/char/watchdog/mixcomwd.c330
1 files changed, 0 insertions, 330 deletions
diff --git a/drivers/char/watchdog/mixcomwd.c b/drivers/char/watchdog/mixcomwd.c
deleted file mode 100644
index 1adf1d56027..00000000000
--- a/drivers/char/watchdog/mixcomwd.c
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- * MixCom Watchdog: A Simple Hardware Watchdog Device
- * Based on Softdog driver by Alan Cox and PC Watchdog driver by Ken Hollis
- *
- * Author: Gergely Madarasz <gorgo@itc.hu>
- *
- * Copyright (c) 1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * 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.
- *
- * Version 0.1 (99/04/15):
- * - first version
- *
- * Version 0.2 (99/06/16):
- * - added kernel timer watchdog ping after close
- * since the hardware does not support watchdog shutdown
- *
- * Version 0.3 (99/06/21):
- * - added WDIOC_GETSTATUS and WDIOC_GETSUPPORT ioctl calls
- *
- * Version 0.3.1 (99/06/22):
- * - allow module removal while internal timer is active,
- * print warning about probable reset
- *
- * Version 0.4 (99/11/15):
- * - support for one more type board
- *
- * Version 0.5 (2001/12/14) Matt Domsch <Matt_Domsch@dell.com>
- * - added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
- *
- * Version 0.6 (2002/04/12): Rob Radez <rob@osinvestor.com>
- * - make mixcomwd_opened unsigned,
- * removed lock_kernel/unlock_kernel from mixcomwd_release,
- * modified ioctl a bit to conform to API
- *
- */
-
-#define VERSION "0.6"
-#define WATCHDOG_NAME "mixcomwd"
-#define PFX WATCHDOG_NAME ": "
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/miscdevice.h>
-#include <linux/ioport.h>
-#include <linux/watchdog.h>
-#include <linux/fs.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/jiffies.h>
-#include <linux/timer.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-/*
- * We have two types of cards that can be probed:
- * 1) The Mixcom cards: these cards can be found at addresses
- * 0x180, 0x280, 0x380 with an additional offset of 0xc10.
- * (Or 0xd90, 0xe90, 0xf90).
- * 2) The FlashCOM cards: these cards can be set up at
- * 0x300 -> 0x378, in 0x8 jumps with an offset of 0x04.
- * (Or 0x304 -> 0x37c in 0x8 jumps).
- * Each card has it's own ID.
- */
-#define MIXCOM_ID 0x11
-#define FLASHCOM_ID 0x18
-static struct {
- int ioport;
- int id;
-} mixcomwd_io_info[] __devinitdata = {
- /* The Mixcom cards */
- {0x0d90, MIXCOM_ID},
- {0x0e90, MIXCOM_ID},
- {0x0f90, MIXCOM_ID},
- /* The FlashCOM cards */
- {0x0304, FLASHCOM_ID},
- {0x030c, FLASHCOM_ID},
- {0x0314, FLASHCOM_ID},
- {0x031c, FLASHCOM_ID},
- {0x0324, FLASHCOM_ID},
- {0x032c, FLASHCOM_ID},
- {0x0334, FLASHCOM_ID},
- {0x033c, FLASHCOM_ID},
- {0x0344, FLASHCOM_ID},
- {0x034c, FLASHCOM_ID},
- {0x0354, FLASHCOM_ID},
- {0x035c, FLASHCOM_ID},
- {0x0364, FLASHCOM_ID},
- {0x036c, FLASHCOM_ID},
- {0x0374, FLASHCOM_ID},
- {0x037c, FLASHCOM_ID},
- /* The end of the list */
- {0x0000, 0},
-};
-
-static void mixcomwd_timerfun(unsigned long d);
-
-static unsigned long mixcomwd_opened; /* long req'd for setbit --RR */
-
-static int watchdog_port;
-static int mixcomwd_timer_alive;
-static DEFINE_TIMER(mixcomwd_timer, mixcomwd_timerfun, 0, 0);
-static char expect_close;
-
-static int nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
-
-static void mixcomwd_ping(void)
-{
- outb_p(55,watchdog_port);
- return;
-}
-
-static void mixcomwd_timerfun(unsigned long d)
-{
- mixcomwd_ping();
-
- mod_timer(&mixcomwd_timer, jiffies + 5 * HZ);
-}
-
-/*
- * Allow only one person to hold it open
- */
-
-static int mixcomwd_open(struct inode *inode, struct file *file)
-{
- if(test_and_set_bit(0,&mixcomwd_opened)) {
- return -EBUSY;
- }
- mixcomwd_ping();
-
- if (nowayout) {
- /*
- * fops_get() code via open() has already done
- * a try_module_get() so it is safe to do the
- * __module_get().
- */
- __module_get(THIS_MODULE);
- } else {
- if(mixcomwd_timer_alive) {
- del_timer(&mixcomwd_timer);
- mixcomwd_timer_alive=0;
- }
- }
- return nonseekable_open(inode, file);
-}
-
-static int mixcomwd_release(struct inode *inode, struct file *file)
-{
- if (expect_close == 42) {
- if(mixcomwd_timer_alive) {
- printk(KERN_ERR PFX "release called while internal timer alive");
- return -EBUSY;
- }
- mixcomwd_timer_alive=1;
- mod_timer(&mixcomwd_timer, jiffies + 5 * HZ);
- } else {
- printk(KERN_CRIT PFX "WDT device closed unexpectedly. WDT will not stop!\n");
- }
-
- clear_bit(0,&mixcomwd_opened);
- expect_close=0;
- return 0;
-}
-
-
-static ssize_t mixcomwd_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
-{
- if(len)
- {
- if (!nowayout) {
- size_t i;
-
- /* In case it was set long ago */
- expect_close = 0;
-
- for (i = 0; i != len; i++) {
- char c;
- if (get_user(c, data + i))
- return -EFAULT;
- if (c == 'V')
- expect_close = 42;
- }
- }
- mixcomwd_ping();
- }
- return len;
-}
-
-static int mixcomwd_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- void __user *argp = (void __user *)arg;
- int __user *p = argp;
- int status;
- static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
- .firmware_version = 1,
- .identity = "MixCOM watchdog",
- };
-
- switch(cmd)
- {
- case WDIOC_GETSTATUS:
- status=mixcomwd_opened;
- if (!nowayout) {
- status|=mixcomwd_timer_alive;
- }
- if (copy_to_user(p, &status, sizeof(int))) {
- return -EFAULT;
- }
- break;
- case WDIOC_GETBOOTSTATUS:
- if (copy_to_user(p, &status, sizeof(int))) {
- return -EFAULT;
- }
- break;
- case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &ident, sizeof(ident))) {
- return -EFAULT;
- }
- break;
- case WDIOC_KEEPALIVE:
- mixcomwd_ping();
- break;
- default:
- return -ENOTTY;
- }
- return 0;
-}
-
-static const struct file_operations mixcomwd_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = mixcomwd_write,
- .ioctl = mixcomwd_ioctl,
- .open = mixcomwd_open,
- .release = mixcomwd_release,
-};
-
-static struct miscdevice mixcomwd_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &mixcomwd_fops,
-};
-
-static int __init checkcard(int port, int card_id)
-{
- int id;
-
- if (!request_region(port, 1, "MixCOM watchdog")) {
- return 0;
- }
-
- id=inb_p(port);
- if (card_id==MIXCOM_ID)
- id &= 0x3f;
-
- if (id!=card_id) {
- release_region(port, 1);
- return 0;
- }
- return 1;
-}
-
-static int __init mixcomwd_init(void)
-{
- int i;
- int ret;
- int found=0;
-
- for (i = 0; !found && mixcomwd_io_info[i].ioport != 0; i++) {
- if (checkcard(mixcomwd_io_info[i].ioport,
- mixcomwd_io_info[i].id)) {
- found = 1;
- watchdog_port = mixcomwd_io_info[i].ioport;
- }
- }
-
- if (!found) {
- printk(KERN_ERR PFX "No card detected, or port not available.\n");
- return -ENODEV;
- }
-
- ret = misc_register(&mixcomwd_miscdev);
- if (ret)
- {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
- goto error_misc_register_watchdog;
- }
-
- printk(KERN_INFO "MixCOM watchdog driver v%s, watchdog port at 0x%3x\n",
- VERSION, watchdog_port);
-
- return 0;
-
-error_misc_register_watchdog:
- release_region(watchdog_port, 1);
- watchdog_port = 0x0000;
- return ret;
-}
-
-static void __exit mixcomwd_exit(void)
-{
- if (!nowayout) {
- if(mixcomwd_timer_alive) {
- printk(KERN_WARNING PFX "I quit now, hardware will"
- " probably reboot!\n");
- del_timer_sync(&mixcomwd_timer);
- mixcomwd_timer_alive=0;
- }
- }
- misc_deregister(&mixcomwd_miscdev);
- release_region(watchdog_port,1);
-}
-
-module_init(mixcomwd_init);
-module_exit(mixcomwd_exit);
-
-MODULE_AUTHOR("Gergely Madarasz <gorgo@itc.hu>");
-MODULE_DESCRIPTION("MixCom Watchdog driver");
-MODULE_VERSION(VERSION);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 05:04:24 +0000