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, 640 deletions

diff --git a/drivers/char/watchdog/wdt.c b/drivers/char/watchdog/wdt.c
deleted file mode 100644
index 0a3de6a0244..00000000000
--- a/drivers/char/watchdog/wdt.c
+++ /dev/null
@@ -1,640 +0,0 @@
-/*
- *	Industrial Computer Source WDT500/501 driver
- *
- *	(c) Copyright 1996-1997 Alan Cox <alan@redhat.com>, All Rights Reserved.
- *				http://www.redhat.com
- *
- *	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.
- *
- *	Neither Alan Cox nor CymruNet Ltd. admit liability nor provide
- *	warranty for any of this software. This material is provided
- *	"AS-IS" and at no charge.
- *
- *	(c) Copyright 1995    Alan Cox <alan@lxorguk.ukuu.org.uk>
- *
- *	Release 0.10.
- *
- *	Fixes
- *		Dave Gregorich	:	Modularisation and minor bugs
- *		Alan Cox	:	Added the watchdog ioctl() stuff
- *		Alan Cox	:	Fixed the reboot problem (as noted by
- *					Matt Crocker).
- *		Alan Cox	:	Added wdt= boot option
- *		Alan Cox	:	Cleaned up copy/user stuff
- *		Tim Hockin	:	Added insmod parameters, comment cleanup
- *					Parameterized timeout
- *		Tigran Aivazian	:	Restructured wdt_init() to handle failures
- *		Joel Becker	:	Added WDIOC_GET/SETTIMEOUT
- *		Matt Domsch	:	Added nowayout module option
- */
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.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>
-#include "wd501p.h"
-
-static unsigned long wdt_is_open;
-static char expect_close;
-
-/*
- *	Module parameters
- */
-
-#define WD_TIMO 60			/* Default heartbeat = 60 seconds */
-
-static int heartbeat = WD_TIMO;
-static int wd_heartbeat;
-module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WD_TIMO) ")");
-
-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) ")");
-
-/* You must set these - there is no sane way to probe for this board. */
-static int io=0x240;
-static int irq=11;
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "WDT io port (default=0x240)");
-module_param(irq, int, 0);
-MODULE_PARM_DESC(irq, "WDT irq (default=11)");
-
-#ifdef CONFIG_WDT_501
-/* Support for the Fan Tachometer on the WDT501-P */
-static int tachometer;
-
-module_param(tachometer, int, 0);
-MODULE_PARM_DESC(tachometer, "WDT501-P Fan Tachometer support (0=disable, default=0)");
-#endif /* CONFIG_WDT_501 */
-
-/*
- *	Programming support
- */
-
-static void wdt_ctr_mode(int ctr, int mode)
-{
-	ctr<<=6;
-	ctr|=0x30;
-	ctr|=(mode<<1);
-	outb_p(ctr, WDT_CR);
-}
-
-static void wdt_ctr_load(int ctr, int val)
-{
-	outb_p(val&0xFF, WDT_COUNT0+ctr);
-	outb_p(val>>8, WDT_COUNT0+ctr);
-}
-
-/**
- *	wdt_start:
- *
- *	Start the watchdog driver.
- */
-
-static int wdt_start(void)
-{
-	inb_p(WDT_DC);			/* Disable watchdog */
-	wdt_ctr_mode(0,3);		/* Program CTR0 for Mode 3: Square Wave Generator */
-	wdt_ctr_mode(1,2);		/* Program CTR1 for Mode 2: Rate Generator */
-	wdt_ctr_mode(2,0);		/* Program CTR2 for Mode 0: Pulse on Terminal Count */
-	wdt_ctr_load(0, 8948);		/* Count at 100Hz */
-	wdt_ctr_load(1,wd_heartbeat);	/* Heartbeat */
-	wdt_ctr_load(2,65535);		/* Length of reset pulse */
-	outb_p(0, WDT_DC);		/* Enable watchdog */
-	return 0;
-}
-
-/**
- *	wdt_stop:
- *
- *	Stop the watchdog driver.
- */
-
-static int wdt_stop (void)
-{
-	/* Turn the card off */
-	inb_p(WDT_DC);			/* Disable watchdog */
-	wdt_ctr_load(2,0);		/* 0 length reset pulses now */
-	return 0;
-}
-
-/**
- *	wdt_ping:
- *
- *	Reload counter one with the watchdog heartbeat. We don't bother reloading
- *	the cascade counter.
- */
-
-static int wdt_ping(void)
-{
-	/* Write a watchdog value */
-	inb_p(WDT_DC);			/* Disable watchdog */
-	wdt_ctr_mode(1,2);		/* Re-Program CTR1 for Mode 2: Rate Generator */
-	wdt_ctr_load(1,wd_heartbeat);	/* Heartbeat */
-	outb_p(0, WDT_DC);		/* Enable watchdog */
-	return 0;
-}
-
-/**
- *	wdt_set_heartbeat:
- *	@t:		the new heartbeat value that needs to be set.
- *
- *	Set a new heartbeat value for the watchdog device. If the heartbeat value is
- *	incorrect we keep the old value and return -EINVAL. If successfull we
- *	return 0.
- */
-static int wdt_set_heartbeat(int t)
-{
-	if ((t < 1) || (t > 65535))
-		return -EINVAL;
-
-	heartbeat = t;
-	wd_heartbeat = t * 100;
-	return 0;
-}
-
-/**
- *	wdt_get_status:
- *	@status:		the new status.
- *
- *	Extract the status information from a WDT watchdog device. There are
- *	several board variants so we have to know which bits are valid. Some
- *	bits default to one and some to zero in order to be maximally painful.
- *
- *	we then map the bits onto the status ioctl flags.
- */
-
-static int wdt_get_status(int *status)
-{
-	unsigned char new_status=inb_p(WDT_SR);
-
-	*status=0;
-	if (new_status & WDC_SR_ISOI0)
-		*status |= WDIOF_EXTERN1;
-	if (new_status & WDC_SR_ISII1)
-		*status |= WDIOF_EXTERN2;
-#ifdef CONFIG_WDT_501
-	if (!(new_status & WDC_SR_TGOOD))
-		*status |= WDIOF_OVERHEAT;
-	if (!(new_status & WDC_SR_PSUOVER))
-		*status |= WDIOF_POWEROVER;
-	if (!(new_status & WDC_SR_PSUUNDR))
-		*status |= WDIOF_POWERUNDER;
-	if (tachometer) {
-		if (!(new_status & WDC_SR_FANGOOD))
-			*status |= WDIOF_FANFAULT;
-	}
-#endif /* CONFIG_WDT_501 */
-	return 0;
-}
-
-#ifdef CONFIG_WDT_501
-/**
- *	wdt_get_temperature:
- *
- *	Reports the temperature in degrees Fahrenheit. The API is in
- *	farenheit. It was designed by an imperial measurement luddite.
- */
-
-static int wdt_get_temperature(int *temperature)
-{
-	unsigned short c=inb_p(WDT_RT);
-
-	*temperature = (c * 11 / 15) + 7;
-	return 0;
-}
-#endif /* CONFIG_WDT_501 */
-
-/**
- *	wdt_interrupt:
- *	@irq:		Interrupt number
- *	@dev_id:	Unused as we don't allow multiple devices.
- *
- *	Handle an interrupt from the board. These are raised when the status
- *	map changes in what the board considers an interesting way. That means
- *	a failure condition occurring.
- */
-
-static irqreturn_t wdt_interrupt(int irq, void *dev_id)
-{
-	/*
-	 *	Read the status register see what is up and
-	 *	then printk it.
-	 */
-	unsigned char status=inb_p(WDT_SR);
-
-	printk(KERN_CRIT "WDT status %d\n", status);
-
-#ifdef CONFIG_WDT_501
-	if (!(status & WDC_SR_TGOOD))
-		printk(KERN_CRIT "Overheat alarm.(%d)\n",inb_p(WDT_RT));
-	if (!(status & WDC_SR_PSUOVER))
-		printk(KERN_CRIT "PSU over voltage.\n");
-	if (!(status & WDC_SR_PSUUNDR))
-		printk(KERN_CRIT "PSU under voltage.\n");
-	if (tachometer) {
-		if (!(status & WDC_SR_FANGOOD))
-			printk(KERN_CRIT "Possible fan fault.\n");
-	}
-#endif /* CONFIG_WDT_501 */
-	if (!(status & WDC_SR_WCCR))
-#ifdef SOFTWARE_REBOOT
-#ifdef ONLY_TESTING
-		printk(KERN_CRIT "Would Reboot.\n");
-#else
-		printk(KERN_CRIT "Initiating system reboot.\n");
-		emergency_restart();
-#endif
-#else
-		printk(KERN_CRIT "Reset in 5ms.\n");
-#endif
-	return IRQ_HANDLED;
-}
-
-
-/**
- *	wdt_write:
- *	@file: file handle to the watchdog
- *	@buf: buffer to write (unused as data does not matter here
- *	@count: count of bytes
- *	@ppos: pointer to the position to write. No seeks allowed
- *
- *	A write to a watchdog device is defined as a keepalive signal. Any
- *	write of data will do, as we we don't define content meaning.
- */
-
-static ssize_t wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
-{
-	if(count) {
-		if (!nowayout) {
-			size_t i;
-
-			/* In case it was set long ago */
-			expect_close = 0;
-
-			for (i = 0; i != count; i++) {
-				char c;
-				if (get_user(c, buf + i))
-					return -EFAULT;
-				if (c == 'V')
-					expect_close = 42;
-			}
-		}
-		wdt_ping();
-	}
-	return count;
-}
-
-/**
- *	wdt_ioctl:
- *	@inode: inode of the device
- *	@file: file handle to the device
- *	@cmd: watchdog command
- *	@arg: argument pointer
- *
- *	The watchdog API defines a common set of functions for all watchdogs
- *	according to their available features. We only actually usefully support
- *	querying capabilities and current status.
- */
-
-static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-	unsigned long arg)
-{
-	void __user *argp = (void __user *)arg;
-	int __user *p = argp;
-	int new_heartbeat;
-	int status;
-
-	static struct watchdog_info ident = {
-		.options =		WDIOF_SETTIMEOUT|
-					WDIOF_MAGICCLOSE|
-					WDIOF_KEEPALIVEPING,
-		.firmware_version =	1,
-		.identity =		"WDT500/501",
-	};
-
-	/* Add options according to the card we have */
-	ident.options |= (WDIOF_EXTERN1|WDIOF_EXTERN2);
-#ifdef CONFIG_WDT_501
-	ident.options |= (WDIOF_OVERHEAT|WDIOF_POWERUNDER|WDIOF_POWEROVER);
-	if (tachometer)
-		ident.options |= WDIOF_FANFAULT;
-#endif /* CONFIG_WDT_501 */
-
-	switch(cmd)
-	{
-		default:
-			return -ENOTTY;
-		case WDIOC_GETSUPPORT:
-			return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
-
-		case WDIOC_GETSTATUS:
-			wdt_get_status(&status);
-			return put_user(status, p);
-		case WDIOC_GETBOOTSTATUS:
-			return put_user(0, p);
-		case WDIOC_KEEPALIVE:
-			wdt_ping();
-			return 0;
-		case WDIOC_SETTIMEOUT:
-			if (get_user(new_heartbeat, p))
-				return -EFAULT;
-
-			if (wdt_set_heartbeat(new_heartbeat))
-				return -EINVAL;
-
-			wdt_ping();
-			/* Fall */
-		case WDIOC_GETTIMEOUT:
-			return put_user(heartbeat, p);
-	}
-}
-
-/**
- *	wdt_open:
- *	@inode: inode of device
- *	@file: file handle to device
- *
- *	The watchdog device has been opened. The watchdog device is single
- *	open and on opening we load the counters. Counter zero is a 100Hz
- *	cascade, into counter 1 which downcounts to reboot. When the counter
- *	triggers counter 2 downcounts the length of the reset pulse which
- *	set set to be as long as possible.
- */
-
-static int wdt_open(struct inode *inode, struct file *file)
-{
-	if(test_and_set_bit(0, &wdt_is_open))
-		return -EBUSY;
-	/*
-	 *	Activate
-	 */
-	wdt_start();
-	return nonseekable_open(inode, file);
-}
-
-/**
- *	wdt_release:
- *	@inode: inode to board
- *	@file: file handle to board
- *
- *	The watchdog has a configurable API. There is a religious dispute
- *	between people who want their watchdog to be able to shut down and
- *	those who want to be sure if the watchdog manager dies the machine
- *	reboots. In the former case we disable the counters, in the latter
- *	case you have to open it again very soon.
- */
-
-static int wdt_release(struct inode *inode, struct file *file)
-{
-	if (expect_close == 42) {
-		wdt_stop();
-		clear_bit(0, &wdt_is_open);
-	} else {
-		printk(KERN_CRIT "wdt: WDT device closed unexpectedly.  WDT will not stop!\n");
-		wdt_ping();
-	}
-	expect_close = 0;
-	return 0;
-}
-
-#ifdef CONFIG_WDT_501
-/**
- *	wdt_temp_read:
- *	@file: file handle to the watchdog board
- *	@buf: buffer to write 1 byte into
- *	@count: length of buffer
- *	@ptr: offset (no seek allowed)
- *
- *	Temp_read reports the temperature in degrees Fahrenheit. The API is in
- *	farenheit. It was designed by an imperial measurement luddite.
- */
-
-static ssize_t wdt_temp_read(struct file *file, char __user *buf, size_t count, loff_t *ptr)
-{
-	int temperature;
-
-	if (wdt_get_temperature(&temperature))
-		return -EFAULT;
-
-	if (copy_to_user (buf, &temperature, 1))
-		return -EFAULT;
-
-	return 1;
-}
-
-/**
- *	wdt_temp_open:
- *	@inode: inode of device
- *	@file: file handle to device
- *
- *	The temperature device has been opened.
- */
-
-static int wdt_temp_open(struct inode *inode, struct file *file)
-{
-	return nonseekable_open(inode, file);
-}
-
-/**
- *	wdt_temp_release:
- *	@inode: inode to board
- *	@file: file handle to board
- *
- *	The temperature device has been closed.
- */
-
-static int wdt_temp_release(struct inode *inode, struct file *file)
-{
-	return 0;
-}
-#endif /* CONFIG_WDT_501 */
-
-/**
- *	notify_sys:
- *	@this: our notifier block
- *	@code: the event being reported
- *	@unused: unused
- *
- *	Our notifier is called on system shutdowns. We want to turn the card
- *	off at reboot otherwise the machine will reboot again during memory
- *	test or worse yet during the following fsck. This would suck, in fact
- *	trust me - if it happens it does suck.
- */
-
-static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
-	void *unused)
-{
-	if(code==SYS_DOWN || code==SYS_HALT) {
-		/* Turn the card off */
-		wdt_stop();
-	}
-	return NOTIFY_DONE;
-}
-
-/*
- *	Kernel Interfaces
- */
-
-
-static const struct file_operations wdt_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.write		= wdt_write,
-	.ioctl		= wdt_ioctl,
-	.open		= wdt_open,
-	.release	= wdt_release,
-};
-
-static struct miscdevice wdt_miscdev = {
-	.minor	= WATCHDOG_MINOR,
-	.name	= "watchdog",
-	.fops	= &wdt_fops,
-};
-
-#ifdef CONFIG_WDT_501
-static const struct file_operations wdt_temp_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.read		= wdt_temp_read,
-	.open		= wdt_temp_open,
-	.release	= wdt_temp_release,
-};
-
-static struct miscdevice temp_miscdev = {
-	.minor	= TEMP_MINOR,
-	.name	= "temperature",
-	.fops	= &wdt_temp_fops,
-};
-#endif /* CONFIG_WDT_501 */
-
-/*
- *	The WDT card needs to learn about soft shutdowns in order to
- *	turn the timebomb registers off.
- */
-
-static struct notifier_block wdt_notifier = {
-	.notifier_call = wdt_notify_sys,
-};
-
-/**
- *	cleanup_module:
- *
- *	Unload the watchdog. You cannot do this with any file handles open.
- *	If your watchdog is set to continue ticking on close and you unload
- *	it, well it keeps ticking. We won't get the interrupt but the board
- *	will not touch PC memory so all is fine. You just have to load a new
- *	module in 60 seconds or reboot.
- */
-
-static void __exit wdt_exit(void)
-{
-	misc_deregister(&wdt_miscdev);
-#ifdef CONFIG_WDT_501
-	misc_deregister(&temp_miscdev);
-#endif /* CONFIG_WDT_501 */
-	unregister_reboot_notifier(&wdt_notifier);
-	free_irq(irq, NULL);
-	release_region(io,8);
-}
-
-/**
- * 	wdt_init:
- *
- *	Set up the WDT watchdog board. All we have to do is grab the
- *	resources we require and bitch if anyone beat us to them.
- *	The open() function will actually kick the board off.
- */
-
-static int __init wdt_init(void)
-{
-	int ret;
-
-	/* Check that the heartbeat value is within it's range ; if not reset to the default */
-	if (wdt_set_heartbeat(heartbeat)) {
-		wdt_set_heartbeat(WD_TIMO);
-		printk(KERN_INFO "wdt: heartbeat value must be 0<heartbeat<65536, using %d\n",
-			WD_TIMO);
-	}
-
-	if (!request_region(io, 8, "wdt501p")) {
-		printk(KERN_ERR "wdt: I/O address 0x%04x already in use\n", io);
-		ret = -EBUSY;
-		goto out;
-	}
-
-	ret = request_irq(irq, wdt_interrupt, IRQF_DISABLED, "wdt501p", NULL);
-	if(ret) {
-		printk(KERN_ERR "wdt: IRQ %d is not free.\n", irq);
-		goto outreg;
-	}
-
-	ret = register_reboot_notifier(&wdt_notifier);
-	if(ret) {
-		printk(KERN_ERR "wdt: cannot register reboot notifier (err=%d)\n", ret);
-		goto outirq;
-	}
-
-#ifdef CONFIG_WDT_501
-	ret = misc_register(&temp_miscdev);
-	if (ret) {
-		printk(KERN_ERR "wdt: cannot register miscdev on minor=%d (err=%d)\n",
-			TEMP_MINOR, ret);
-		goto outrbt;
-	}
-#endif /* CONFIG_WDT_501 */
-
-	ret = misc_register(&wdt_miscdev);
-	if (ret) {
-		printk(KERN_ERR "wdt: cannot register miscdev on minor=%d (err=%d)\n",
-			WATCHDOG_MINOR, ret);
-		goto outmisc;
-	}
-
-	ret = 0;
-	printk(KERN_INFO "WDT500/501-P driver 0.10 at 0x%04x (Interrupt %d). heartbeat=%d sec (nowayout=%d)\n",
-		io, irq, heartbeat, nowayout);
-#ifdef CONFIG_WDT_501
-	printk(KERN_INFO "wdt: Fan Tachometer is %s\n", (tachometer ? "Enabled" : "Disabled"));
-#endif /* CONFIG_WDT_501 */
-
-out:
-	return ret;
-
-outmisc:
-#ifdef CONFIG_WDT_501
-	misc_deregister(&temp_miscdev);
-outrbt:
-#endif /* CONFIG_WDT_501 */
-	unregister_reboot_notifier(&wdt_notifier);
-outirq:
-	free_irq(irq, NULL);
-outreg:
-	release_region(io,8);
-	goto out;
-}
-
-module_init(wdt_init);
-module_exit(wdt_exit);
-
-MODULE_AUTHOR("Alan Cox");
-MODULE_DESCRIPTION("Driver for ISA ICS watchdog cards (WDT500/501)");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-MODULE_ALIAS_MISCDEV(TEMP_MINOR);
-MODULE_LICENSE("GPL");