mv watchdog tree under drivers

move watchdog tree from drivers/char/watchdog to drivers/watchdog.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 0 insertions, 489 deletions

diff --git a/drivers/char/watchdog/machzwd.c b/drivers/char/watchdog/machzwd.c
deleted file mode 100644
index 6d35bb112a5..00000000000
--- a/drivers/char/watchdog/machzwd.c
+++ /dev/null
@@ -1,489 +0,0 @@
-/*
- *  MachZ ZF-Logic Watchdog Timer driver for Linux
- *
- *
- *  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.
- *
- *  The author does NOT admit liability nor provide warranty for
- *  any of this software. This material is provided "AS-IS" in
- *  the hope that it may be useful for others.
- *
- *  Author: Fernando Fuganti <fuganti@conectiva.com.br>
- *
- *  Based on sbc60xxwdt.c by Jakob Oestergaard
- *
- *
- *  We have two timers (wd#1, wd#2) driven by a 32 KHz clock with the
- *  following periods:
- *      wd#1 - 2 seconds;
- *      wd#2 - 7.2 ms;
- *  After the expiration of wd#1, it can generate a NMI, SCI, SMI, or
- *  a system RESET and it starts wd#2 that unconditionaly will RESET
- *  the system when the counter reaches zero.
- *
- *  14-Dec-2001 Matt Domsch <Matt_Domsch@dell.com>
- *      Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/timer.h>
-#include <linux/jiffies.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/fs.h>
-#include <linux/ioport.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
-/* ports */
-#define ZF_IOBASE	0x218
-#define INDEX		0x218
-#define DATA_B		0x219
-#define DATA_W		0x21A
-#define DATA_D		0x21A
-
-/* indexes */			/* size */
-#define ZFL_VERSION	0x02	/* 16   */
-#define CONTROL 	0x10	/* 16   */
-#define STATUS		0x12	/* 8    */
-#define COUNTER_1	0x0C	/* 16   */
-#define COUNTER_2	0x0E	/* 8    */
-#define PULSE_LEN	0x0F	/* 8    */
-
-/* controls */
-#define ENABLE_WD1	0x0001
-#define ENABLE_WD2	0x0002
-#define RESET_WD1	0x0010
-#define RESET_WD2	0x0020
-#define GEN_SCI		0x0100
-#define GEN_NMI		0x0200
-#define GEN_SMI		0x0400
-#define GEN_RESET	0x0800
-
-
-/* utilities */
-
-#define WD1	0
-#define WD2	1
-
-#define zf_writew(port, data)  { outb(port, INDEX); outw(data, DATA_W); }
-#define zf_writeb(port, data)  { outb(port, INDEX); outb(data, DATA_B); }
-#define zf_get_ZFL_version()   zf_readw(ZFL_VERSION)
-
-
-static unsigned short zf_readw(unsigned char port)
-{
-	outb(port, INDEX);
-	return inw(DATA_W);
-}
-
-
-MODULE_AUTHOR("Fernando Fuganti <fuganti@conectiva.com.br>");
-MODULE_DESCRIPTION("MachZ ZF-Logic Watchdog driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-
-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) ")");
-
-#define PFX "machzwd"
-
-static struct watchdog_info zf_info = {
-	.options		= WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
-	.firmware_version	= 1,
-	.identity		= "ZF-Logic watchdog",
-};
-
-
-/*
- * action refers to action taken when watchdog resets
- * 0 = GEN_RESET
- * 1 = GEN_SMI
- * 2 = GEN_NMI
- * 3 = GEN_SCI
- * defaults to GEN_RESET (0)
- */
-static int action = 0;
-module_param(action, int, 0);
-MODULE_PARM_DESC(action, "after watchdog resets, generate: 0 = RESET(*)  1 = SMI  2 = NMI  3 = SCI");
-
-static void zf_ping(unsigned long data);
-
-static int zf_action = GEN_RESET;
-static unsigned long zf_is_open;
-static char zf_expect_close;
-static spinlock_t zf_lock;
-static spinlock_t zf_port_lock;
-static DEFINE_TIMER(zf_timer, zf_ping, 0, 0);
-static unsigned long next_heartbeat = 0;
-
-
-/* timeout for user land heart beat (10 seconds) */
-#define ZF_USER_TIMEO (HZ*10)
-
-/* timeout for hardware watchdog (~500ms) */
-#define ZF_HW_TIMEO (HZ/2)
-
-/* number of ticks on WD#1 (driven by a 32KHz clock, 2s) */
-#define ZF_CTIMEOUT 0xffff
-
-#ifndef ZF_DEBUG
-#	define dprintk(format, args...)
-#else
-#	define dprintk(format, args...) printk(KERN_DEBUG PFX ":%s:%d: " format, __FUNCTION__, __LINE__ , ## args)
-#endif
-
-
-static inline void zf_set_status(unsigned char new)
-{
-	zf_writeb(STATUS, new);
-}
-
-
-/* CONTROL register functions */
-
-static inline unsigned short zf_get_control(void)
-{
-	return zf_readw(CONTROL);
-}
-
-static inline void zf_set_control(unsigned short new)
-{
-	zf_writew(CONTROL, new);
-}
-
-
-/* WD#? counter functions */
-/*
- *	Just set counter value
- */
-
-static inline void zf_set_timer(unsigned short new, unsigned char n)
-{
-	switch(n){
-		case WD1:
-			zf_writew(COUNTER_1, new);
-		case WD2:
-			zf_writeb(COUNTER_2, new > 0xff ? 0xff : new);
-		default:
-			return;
-	}
-}
-
-/*
- * stop hardware timer
- */
-static void zf_timer_off(void)
-{
-	unsigned int ctrl_reg = 0;
-	unsigned long flags;
-
-	/* stop internal ping */
-	del_timer_sync(&zf_timer);
-
-	spin_lock_irqsave(&zf_port_lock, flags);
-	/* stop watchdog timer */
-	ctrl_reg = zf_get_control();
-	ctrl_reg |= (ENABLE_WD1|ENABLE_WD2);	/* disable wd1 and wd2 */
-	ctrl_reg &= ~(ENABLE_WD1|ENABLE_WD2);
-	zf_set_control(ctrl_reg);
-	spin_unlock_irqrestore(&zf_port_lock, flags);
-
-	printk(KERN_INFO PFX ": Watchdog timer is now disabled\n");
-}
-
-
-/*
- * start hardware timer
- */
-static void zf_timer_on(void)
-{
-	unsigned int ctrl_reg = 0;
-	unsigned long flags;
-
-	spin_lock_irqsave(&zf_port_lock, flags);
-
-	zf_writeb(PULSE_LEN, 0xff);
-
-	zf_set_timer(ZF_CTIMEOUT, WD1);
-
-	/* user land ping */
-	next_heartbeat = jiffies + ZF_USER_TIMEO;
-
-	/* start the timer for internal ping */
-	mod_timer(&zf_timer, jiffies + ZF_HW_TIMEO);
-
-	/* start watchdog timer */
-	ctrl_reg = zf_get_control();
-	ctrl_reg |= (ENABLE_WD1|zf_action);
-	zf_set_control(ctrl_reg);
-	spin_unlock_irqrestore(&zf_port_lock, flags);
-
-	printk(KERN_INFO PFX ": Watchdog timer is now enabled\n");
-}
-
-
-static void zf_ping(unsigned long data)
-{
-	unsigned int ctrl_reg = 0;
-	unsigned long flags;
-
-	zf_writeb(COUNTER_2, 0xff);
-
-	if(time_before(jiffies, next_heartbeat)){
-
-		dprintk("time_before: %ld\n", next_heartbeat - jiffies);
-
-		/*
-		 * reset event is activated by transition from 0 to 1 on
-		 * RESET_WD1 bit and we assume that it is already zero...
-		 */
-
-		spin_lock_irqsave(&zf_port_lock, flags);
-		ctrl_reg = zf_get_control();
-		ctrl_reg |= RESET_WD1;
-		zf_set_control(ctrl_reg);
-
-		/* ...and nothing changes until here */
-		ctrl_reg &= ~(RESET_WD1);
-		zf_set_control(ctrl_reg);
-		spin_unlock_irqrestore(&zf_port_lock, flags);
-
-		mod_timer(&zf_timer, jiffies + ZF_HW_TIMEO);
-	}else{
-		printk(KERN_CRIT PFX ": I will reset your machine\n");
-	}
-}
-
-static ssize_t zf_write(struct file *file, const char __user *buf, size_t count,
-								loff_t *ppos)
-{
-	/* See if we got the magic character */
-	if(count){
-
-		/*
-		 * no need to check for close confirmation
-		 * no way to disable watchdog ;)
-		 */
-		if (!nowayout) {
-			size_t ofs;
-
-			/*
-			 * note: just in case someone wrote the magic character
-			 * five months ago...
-			 */
-			zf_expect_close = 0;
-
-			/* now scan */
-			for (ofs = 0; ofs != count; ofs++){
-				char c;
-				if (get_user(c, buf + ofs))
-					return -EFAULT;
-				if (c == 'V'){
-					zf_expect_close = 42;
-					dprintk("zf_expect_close = 42\n");
-				}
-			}
-		}
-
-		/*
-		 * Well, anyhow someone wrote to us,
-		 * we should return that favour
-		 */
-		next_heartbeat = jiffies + ZF_USER_TIMEO;
-		dprintk("user ping at %ld\n", jiffies);
-
-	}
-
-	return count;
-}
-
-static int zf_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-	unsigned long arg)
-{
-	void __user *argp = (void __user *)arg;
-	int __user *p = argp;
-	switch (cmd) {
-	case WDIOC_GETSUPPORT:
-		if (copy_to_user(argp, &zf_info, sizeof(zf_info)))
-			return -EFAULT;
-		break;
-
-	case WDIOC_GETSTATUS:
-	case WDIOC_GETBOOTSTATUS:
-		return put_user(0, p);
-
-	case WDIOC_KEEPALIVE:
-		zf_ping(0);
-		break;
-
-	default:
-		return -ENOTTY;
-	}
-
-	return 0;
-}
-
-static int zf_open(struct inode *inode, struct file *file)
-{
-	spin_lock(&zf_lock);
-	if(test_and_set_bit(0, &zf_is_open)) {
-		spin_unlock(&zf_lock);
-		return -EBUSY;
-	}
-
-	if (nowayout)
-		__module_get(THIS_MODULE);
-
-	spin_unlock(&zf_lock);
-
-	zf_timer_on();
-
-	return nonseekable_open(inode, file);
-}
-
-static int zf_close(struct inode *inode, struct file *file)
-{
-	if(zf_expect_close == 42){
-		zf_timer_off();
-	} else {
-		del_timer(&zf_timer);
-		printk(KERN_ERR PFX ": device file closed unexpectedly. Will not stop the WDT!\n");
-	}
-
-	spin_lock(&zf_lock);
-	clear_bit(0, &zf_is_open);
-	spin_unlock(&zf_lock);
-
-	zf_expect_close = 0;
-
-	return 0;
-}
-
-/*
- * Notifier for system down
- */
-
-static int zf_notify_sys(struct notifier_block *this, unsigned long code,
-								void *unused)
-{
-	if(code == SYS_DOWN || code == SYS_HALT){
-		zf_timer_off();
-	}
-
-	return NOTIFY_DONE;
-}
-
-
-
-
-static const struct file_operations zf_fops = {
-	.owner          = THIS_MODULE,
-	.llseek         = no_llseek,
-	.write          = zf_write,
-	.ioctl          = zf_ioctl,
-	.open           = zf_open,
-	.release        = zf_close,
-};
-
-static struct miscdevice zf_miscdev = {
-	.minor = WATCHDOG_MINOR,
-	.name = "watchdog",
-	.fops = &zf_fops,
-};
- 
-
-/*
- * The device needs to learn about soft shutdowns in order to
- * turn the timebomb registers off.
- */
-static struct notifier_block zf_notifier = {
-	.notifier_call = zf_notify_sys,
-};
-
-static void __init zf_show_action(int act)
-{
-	char *str[] = { "RESET", "SMI", "NMI", "SCI" };
-
-	printk(KERN_INFO PFX ": Watchdog using action = %s\n", str[act]);
-}
-
-static int __init zf_init(void)
-{
-	int ret;
-
-	printk(KERN_INFO PFX ": MachZ ZF-Logic Watchdog driver initializing.\n");
-
-	ret = zf_get_ZFL_version();
-	if ((!ret) || (ret == 0xffff)) {
-		printk(KERN_WARNING PFX ": no ZF-Logic found\n");
-		return -ENODEV;
-	}
-
-	if((action <= 3) && (action >= 0)){
-		zf_action = zf_action>>action;
-	} else
-		action = 0;
-
-	zf_show_action(action);
-
-	spin_lock_init(&zf_lock);
-	spin_lock_init(&zf_port_lock);
-
-	if(!request_region(ZF_IOBASE, 3, "MachZ ZFL WDT")){
-		printk(KERN_ERR "cannot reserve I/O ports at %d\n",
-							ZF_IOBASE);
-		ret = -EBUSY;
-		goto no_region;
-	}
-
-	ret = register_reboot_notifier(&zf_notifier);
-	if(ret){
-		printk(KERN_ERR "can't register reboot notifier (err=%d)\n",
-									ret);
-		goto no_reboot;
-	}
-
-	ret = misc_register(&zf_miscdev);
-	if (ret){
-		printk(KERN_ERR "can't misc_register on minor=%d\n",
-							WATCHDOG_MINOR);
-		goto no_misc;
-	}
-
-	zf_set_status(0);
-	zf_set_control(0);
-
-	return 0;
-
-no_misc:
-	unregister_reboot_notifier(&zf_notifier);
-no_reboot:
-	release_region(ZF_IOBASE, 3);
-no_region:
-	return ret;
-}
-
-
-static void __exit zf_exit(void)
-{
-	zf_timer_off();
-
-	misc_deregister(&zf_miscdev);
-	unregister_reboot_notifier(&zf_notifier);
-	release_region(ZF_IOBASE, 3);
-}
-
-module_init(zf_init);
-module_exit(zf_exit);