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authorWim Van Sebroeck <wim@iguana.be>2007-08-17 08:38:02 +0000
committerWim Van Sebroeck <wim@iguana.be>2007-10-18 10:39:03 +0000
commitb7e04f8c61a46d742de23af5d7ca2b41b33e40ac (patch)
treec52a7ea568648e2d8ed0d423098b42298de2058b /drivers/char/watchdog/indydog.c
parentd85714d81cc0408daddb68c10f7fd69eafe7c213 (diff)
mv watchdog tree under drivers
move watchdog tree from drivers/char/watchdog to drivers/watchdog. Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/char/watchdog/indydog.c')
-rw-r--r--drivers/char/watchdog/indydog.c215
1 files changed, 0 insertions, 215 deletions
diff --git a/drivers/char/watchdog/indydog.c b/drivers/char/watchdog/indydog.c
deleted file mode 100644
index 788245bdaa7f..000000000000
--- a/drivers/char/watchdog/indydog.c
+++ /dev/null
@@ -1,215 +0,0 @@
-/*
- * IndyDog 0.3 A Hardware Watchdog Device for SGI IP22
- *
- * (c) Copyright 2002 Guido Guenther <agx@sigxcpu.org>, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * based on softdog.c by Alan Cox <alan@redhat.com>
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
-#include <asm/sgi/mc.h>
-
-#define PFX "indydog: "
-static int indydog_alive;
-
-#define WATCHDOG_TIMEOUT 30 /* 30 sec default timeout */
-
-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 indydog_start(void)
-{
- u32 mc_ctrl0 = sgimc->cpuctrl0;
-
- mc_ctrl0 = sgimc->cpuctrl0 | SGIMC_CCTRL0_WDOG;
- sgimc->cpuctrl0 = mc_ctrl0;
-}
-
-static void indydog_stop(void)
-{
- u32 mc_ctrl0 = sgimc->cpuctrl0;
-
- mc_ctrl0 &= ~SGIMC_CCTRL0_WDOG;
- sgimc->cpuctrl0 = mc_ctrl0;
-
- printk(KERN_INFO PFX "Stopped watchdog timer.\n");
-}
-
-static void indydog_ping(void)
-{
- sgimc->watchdogt = 0;
-}
-
-/*
- * Allow only one person to hold it open
- */
-static int indydog_open(struct inode *inode, struct file *file)
-{
- if (indydog_alive)
- return -EBUSY;
-
- if (nowayout)
- __module_get(THIS_MODULE);
-
- /* Activate timer */
- indydog_start();
- indydog_ping();
-
- indydog_alive = 1;
- printk(KERN_INFO "Started watchdog timer.\n");
-
- return nonseekable_open(inode, file);
-}
-
-static int indydog_release(struct inode *inode, struct file *file)
-{
- /* Shut off the timer.
- * Lock it in if it's a module and we defined ...NOWAYOUT */
- if (!nowayout)
- indydog_stop(); /* Turn the WDT off */
-
- indydog_alive = 0;
-
- return 0;
-}
-
-static ssize_t indydog_write(struct file *file, const char *data, size_t len, loff_t *ppos)
-{
- /* Refresh the timer. */
- if (len) {
- indydog_ping();
- }
- return len;
-}
-
-static int indydog_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int options, retval = -EINVAL;
- static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING |
- WDIOF_MAGICCLOSE,
- .firmware_version = 0,
- .identity = "Hardware Watchdog for SGI IP22",
- };
-
- switch (cmd) {
- default:
- return -ENOTTY;
- case WDIOC_GETSUPPORT:
- if (copy_to_user((struct watchdog_info *)arg,
- &ident, sizeof(ident)))
- return -EFAULT;
- return 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0,(int *)arg);
- case WDIOC_KEEPALIVE:
- indydog_ping();
- return 0;
- case WDIOC_GETTIMEOUT:
- return put_user(WATCHDOG_TIMEOUT,(int *)arg);
- case WDIOC_SETOPTIONS:
- {
- if (get_user(options, (int *)arg))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD) {
- indydog_stop();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- indydog_start();
- retval = 0;
- }
-
- return retval;
- }
- }
-}
-
-static int indydog_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
-{
- if (code == SYS_DOWN || code == SYS_HALT)
- indydog_stop(); /* Turn the WDT off */
-
- return NOTIFY_DONE;
-}
-
-static const struct file_operations indydog_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = indydog_write,
- .ioctl = indydog_ioctl,
- .open = indydog_open,
- .release = indydog_release,
-};
-
-static struct miscdevice indydog_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &indydog_fops,
-};
-
-static struct notifier_block indydog_notifier = {
- .notifier_call = indydog_notify_sys,
-};
-
-static char banner[] __initdata =
- KERN_INFO PFX "Hardware Watchdog Timer for SGI IP22: 0.3\n";
-
-static int __init watchdog_init(void)
-{
- int ret;
-
- ret = register_reboot_notifier(&indydog_notifier);
- if (ret) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
- return ret;
- }
-
- ret = misc_register(&indydog_miscdev);
- if (ret) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
- unregister_reboot_notifier(&indydog_notifier);
- return ret;
- }
-
- printk(banner);
-
- return 0;
-}
-
-static void __exit watchdog_exit(void)
-{
- misc_deregister(&indydog_miscdev);
- unregister_reboot_notifier(&indydog_notifier);
-}
-
-module_init(watchdog_init);
-module_exit(watchdog_exit);
-
-MODULE_AUTHOR("Guido Guenther <agx@sigxcpu.org>");
-MODULE_DESCRIPTION("Hardware Watchdog Device for SGI IP22");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);