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path: root/drivers/char/watchdog/cpu5wdt.c
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Diffstat (limited to 'drivers/char/watchdog/cpu5wdt.c')
-rw-r--r--drivers/char/watchdog/cpu5wdt.c304
1 files changed, 0 insertions, 304 deletions
diff --git a/drivers/char/watchdog/cpu5wdt.c b/drivers/char/watchdog/cpu5wdt.c
deleted file mode 100644
index 5941ca601a3..00000000000
--- a/drivers/char/watchdog/cpu5wdt.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * sma cpu5 watchdog driver
- *
- * Copyright (C) 2003 Heiko Ronsdorf <hero@ihg.uni-duisburg.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/miscdevice.h>
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/timer.h>
-#include <linux/completion.h>
-#include <linux/jiffies.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
-#include <linux/watchdog.h>
-
-/* adjustable parameters */
-
-static int verbose = 0;
-static int port = 0x91;
-static int ticks = 10000;
-
-#define PFX "cpu5wdt: "
-
-#define CPU5WDT_EXTENT 0x0A
-
-#define CPU5WDT_STATUS_REG 0x00
-#define CPU5WDT_TIME_A_REG 0x02
-#define CPU5WDT_TIME_B_REG 0x03
-#define CPU5WDT_MODE_REG 0x04
-#define CPU5WDT_TRIGGER_REG 0x07
-#define CPU5WDT_ENABLE_REG 0x08
-#define CPU5WDT_RESET_REG 0x09
-
-#define CPU5WDT_INTERVAL (HZ/10+1)
-
-/* some device data */
-
-static struct {
- struct completion stop;
- volatile int running;
- struct timer_list timer;
- volatile int queue;
- int default_ticks;
- unsigned long inuse;
-} cpu5wdt_device;
-
-/* generic helper functions */
-
-static void cpu5wdt_trigger(unsigned long unused)
-{
- if ( verbose > 2 )
- printk(KERN_DEBUG PFX "trigger at %i ticks\n", ticks);
-
- if( cpu5wdt_device.running )
- ticks--;
-
- /* keep watchdog alive */
- outb(1, port + CPU5WDT_TRIGGER_REG);
-
- /* requeue?? */
- if (cpu5wdt_device.queue && ticks)
- mod_timer(&cpu5wdt_device.timer, jiffies + CPU5WDT_INTERVAL);
- else {
- /* ticks doesn't matter anyway */
- complete(&cpu5wdt_device.stop);
- }
-
-}
-
-static void cpu5wdt_reset(void)
-{
- ticks = cpu5wdt_device.default_ticks;
-
- if ( verbose )
- printk(KERN_DEBUG PFX "reset (%i ticks)\n", (int) ticks);
-
-}
-
-static void cpu5wdt_start(void)
-{
- if ( !cpu5wdt_device.queue ) {
- cpu5wdt_device.queue = 1;
- outb(0, port + CPU5WDT_TIME_A_REG);
- outb(0, port + CPU5WDT_TIME_B_REG);
- outb(1, port + CPU5WDT_MODE_REG);
- outb(0, port + CPU5WDT_RESET_REG);
- outb(0, port + CPU5WDT_ENABLE_REG);
- mod_timer(&cpu5wdt_device.timer, jiffies + CPU5WDT_INTERVAL);
- }
- /* if process dies, counter is not decremented */
- cpu5wdt_device.running++;
-}
-
-static int cpu5wdt_stop(void)
-{
- if ( cpu5wdt_device.running )
- cpu5wdt_device.running = 0;
-
- ticks = cpu5wdt_device.default_ticks;
-
- if ( verbose )
- printk(KERN_CRIT PFX "stop not possible\n");
-
- return -EIO;
-}
-
-/* filesystem operations */
-
-static int cpu5wdt_open(struct inode *inode, struct file *file)
-{
- if ( test_and_set_bit(0, &cpu5wdt_device.inuse) )
- return -EBUSY;
-
- return nonseekable_open(inode, file);
-}
-
-static int cpu5wdt_release(struct inode *inode, struct file *file)
-{
- clear_bit(0, &cpu5wdt_device.inuse);
- return 0;
-}
-
-static int cpu5wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
- void __user *argp = (void __user *)arg;
- unsigned int value;
- static struct watchdog_info ident =
- {
- .options = WDIOF_CARDRESET,
- .identity = "CPU5 WDT",
- };
-
- switch(cmd) {
- case WDIOC_KEEPALIVE:
- cpu5wdt_reset();
- break;
- case WDIOC_GETSTATUS:
- value = inb(port + CPU5WDT_STATUS_REG);
- value = (value >> 2) & 1;
- if ( copy_to_user(argp, &value, sizeof(int)) )
- return -EFAULT;
- break;
- case WDIOC_GETBOOTSTATUS:
- if ( copy_to_user(argp, &value, sizeof(int)) )
- return -EFAULT;
- break;
- case WDIOC_GETSUPPORT:
- if ( copy_to_user(argp, &ident, sizeof(ident)) )
- return -EFAULT;
- break;
- case WDIOC_SETOPTIONS:
- if ( copy_from_user(&value, argp, sizeof(int)) )
- return -EFAULT;
- switch(value) {
- case WDIOS_ENABLECARD:
- cpu5wdt_start();
- break;
- case WDIOS_DISABLECARD:
- return cpu5wdt_stop();
- default:
- return -EINVAL;
- }
- break;
- default:
- return -ENOTTY;
- }
- return 0;
-}
-
-static ssize_t cpu5wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
-{
- if ( !count )
- return -EIO;
-
- cpu5wdt_reset();
-
- return count;
-}
-
-static const struct file_operations cpu5wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .ioctl = cpu5wdt_ioctl,
- .open = cpu5wdt_open,
- .write = cpu5wdt_write,
- .release = cpu5wdt_release,
-};
-
-static struct miscdevice cpu5wdt_misc = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &cpu5wdt_fops,
-};
-
-/* init/exit function */
-
-static int __devinit cpu5wdt_init(void)
-{
- unsigned int val;
- int err;
-
- if ( verbose )
- printk(KERN_DEBUG PFX "port=0x%x, verbose=%i\n", port, verbose);
-
- if ( !request_region(port, CPU5WDT_EXTENT, PFX) ) {
- printk(KERN_ERR PFX "request_region failed\n");
- err = -EBUSY;
- goto no_port;
- }
-
- if ( (err = misc_register(&cpu5wdt_misc)) < 0 ) {
- printk(KERN_ERR PFX "misc_register failed\n");
- goto no_misc;
- }
-
- /* watchdog reboot? */
- val = inb(port + CPU5WDT_STATUS_REG);
- val = (val >> 2) & 1;
- if ( !val )
- printk(KERN_INFO PFX "sorry, was my fault\n");
-
- init_completion(&cpu5wdt_device.stop);
- cpu5wdt_device.queue = 0;
-
- clear_bit(0, &cpu5wdt_device.inuse);
-
- setup_timer(&cpu5wdt_device.timer, cpu5wdt_trigger, 0);
-
- cpu5wdt_device.default_ticks = ticks;
-
- printk(KERN_INFO PFX "init success\n");
-
- return 0;
-
-no_misc:
- release_region(port, CPU5WDT_EXTENT);
-no_port:
- return err;
-}
-
-static int __devinit cpu5wdt_init_module(void)
-{
- return cpu5wdt_init();
-}
-
-static void __devexit cpu5wdt_exit(void)
-{
- if ( cpu5wdt_device.queue ) {
- cpu5wdt_device.queue = 0;
- wait_for_completion(&cpu5wdt_device.stop);
- }
-
- misc_deregister(&cpu5wdt_misc);
-
- release_region(port, CPU5WDT_EXTENT);
-
-}
-
-static void __devexit cpu5wdt_exit_module(void)
-{
- cpu5wdt_exit();
-}
-
-/* module entry points */
-
-module_init(cpu5wdt_init_module);
-module_exit(cpu5wdt_exit_module);
-
-MODULE_AUTHOR("Heiko Ronsdorf <hero@ihg.uni-duisburg.de>");
-MODULE_DESCRIPTION("sma cpu5 watchdog driver");
-MODULE_SUPPORTED_DEVICE("sma cpu5 watchdog");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-
-module_param(port, int, 0);
-MODULE_PARM_DESC(port, "base address of watchdog card, default is 0x91");
-
-module_param(verbose, int, 0);
-MODULE_PARM_DESC(verbose, "be verbose, default is 0 (no)");
-
-module_param(ticks, int, 0);
-MODULE_PARM_DESC(ticks, "count down ticks, default is 10000");