1 files changed, 0 insertions, 465 deletions
diff --git a/drivers/char/watchdog/alim1535_wdt.c b/drivers/char/watchdog/alim1535_wdt.c
deleted file mode 100644
index c404fc69e7e6..000000000000
--- a/drivers/char/watchdog/alim1535_wdt.c
+++ /dev/null
@@ -1,465 +0,0 @@
-/*
- *	Watchdog for the 7101 PMU version found in the ALi M1535 chipsets
- *
- *	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.
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/ioport.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/pci.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#define WATCHDOG_NAME "ALi_M1535"
-#define PFX WATCHDOG_NAME ": "
-#define WATCHDOG_TIMEOUT 60	/* 60 sec default timeout */
-
-/* internal variables */
-static unsigned long ali_is_open;
-static char ali_expect_release;
-static struct pci_dev *ali_pci;
-static u32 ali_timeout_bits;	/* stores the computed timeout */
-static spinlock_t ali_lock;	/* Guards the hardware */
-
-/* module parameters */
-static int timeout = WATCHDOG_TIMEOUT;
-module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (0<timeout<18000, default=" __MODULE_STRING(WATCHDOG_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) ")");
-
-/*
- *	ali_start	-	start watchdog countdown
- *
- *	Starts the timer running providing the timer has a counter
- *	configuration set.
- */
-
-static void ali_start(void)
-{
-	u32 val;
-
-	spin_lock(&ali_lock);
-
-	pci_read_config_dword(ali_pci, 0xCC, &val);
-	val &= ~0x3F;	/* Mask count */
-	val |= (1<<25) | ali_timeout_bits;
-	pci_write_config_dword(ali_pci, 0xCC, val);
-
-	spin_unlock(&ali_lock);
-}
-
-/*
- *	ali_stop	-	stop the timer countdown
- *
- *	Stop the ALi watchdog countdown
- */
-
-static void ali_stop(void)
-{
-	u32 val;
-
-	spin_lock(&ali_lock);
-
-	pci_read_config_dword(ali_pci, 0xCC, &val);
-	val &= ~0x3F;	/* Mask count to zero (disabled) */
-	val &= ~(1<<25);/* and for safety mask the reset enable */
-	pci_write_config_dword(ali_pci, 0xCC, val);
-
-	spin_unlock(&ali_lock);
-}
-
-/*
- *	ali_keepalive	-	send a keepalive to the watchdog
- *
- *      Send a keepalive to the timer (actually we restart the timer).
- */
-
-static void ali_keepalive(void)
-{
-	ali_start();
-}
-
-/*
- *	ali_settimer	-	compute the timer reload value
- *	@t: time in seconds
- *
- *	Computes the timeout values needed
- */
-
-static int ali_settimer(int t)
-{
-	if(t < 0)
-		return -EINVAL;
-	else if(t < 60)
-		ali_timeout_bits = t|(1<<6);
-	else if(t < 3600)
-		ali_timeout_bits = (t/60)|(1<<7);
-	else if(t < 18000)
-		ali_timeout_bits = (t/300)|(1<<6)|(1<<7);
-	else return -EINVAL;
-
-	timeout = t;
-	return 0;
-}
-
-/*
- *	/dev/watchdog handling
- */
-
-/*
- *	ali_write	-	writes to ALi watchdog
- *	@file: file from VFS
- *	@data: user address of data
- *	@len: length of data
- *	@ppos: pointer to the file offset
- *
- *	Handle a write to the ALi watchdog. Writing to the file pings
- *	the watchdog and resets it. Writing the magic 'V' sequence allows
- *	the next close to turn off the watchdog.
- */
-
-static ssize_t ali_write(struct file *file, const char __user *data,
-			      size_t len, loff_t * ppos)
-{
-	/* See if we got the magic character 'V' and reload the timer */
-	if (len) {
-		if (!nowayout) {
-			size_t i;
-
-			/* note: just in case someone wrote the magic character
-			 * five months ago... */
-			ali_expect_release = 0;
-
-			/* scan to see whether or not we got the magic character */
-			for (i = 0; i != len; i++) {
-				char c;
-				if(get_user(c, data+i))
-					return -EFAULT;
-				if (c == 'V')
-					ali_expect_release = 42;
-			}
-		}
-
-		/* someone wrote to us, we should reload the timer */
-		ali_start();
-	}
-	return len;
-}
-
-/*
- *	ali_ioctl	-	handle watchdog ioctls
- *	@inode: VFS inode
- *	@file: VFS file pointer
- *	@cmd: ioctl number
- *	@arg: arguments to the ioctl
- *
- *	Handle the watchdog ioctls supported by the ALi driver. Really
- *	we want an extension to enable irq ack monitoring and the like
- */
-
-static int ali_ioctl(struct inode *inode, struct file *file,
-			  unsigned int cmd, unsigned long arg)
-{
-	void __user *argp = (void __user *)arg;
-	int __user *p = argp;
-	static struct watchdog_info ident = {
-		.options =		WDIOF_KEEPALIVEPING |
-					WDIOF_SETTIMEOUT |
-					WDIOF_MAGICCLOSE,
-		.firmware_version =	0,
-		.identity =		"ALi M1535 WatchDog Timer",
-	};
-
-	switch (cmd) {
-		case WDIOC_GETSUPPORT:
-			return copy_to_user(argp, &ident,
-				sizeof (ident)) ? -EFAULT : 0;
-
-		case WDIOC_GETSTATUS:
-		case WDIOC_GETBOOTSTATUS:
-			return put_user(0, p);
-
-		case WDIOC_KEEPALIVE:
-			ali_keepalive();
-			return 0;
-
-		case WDIOC_SETOPTIONS:
-		{
-			int new_options, retval = -EINVAL;
-
-			if (get_user (new_options, p))
-				return -EFAULT;
-
-			if (new_options & WDIOS_DISABLECARD) {
-				ali_stop();
-				retval = 0;
-			}
-
-			if (new_options & WDIOS_ENABLECARD) {
-				ali_start();
-				retval = 0;
-			}
-
-			return retval;
-		}
-
-		case WDIOC_SETTIMEOUT:
-		{
-			int new_timeout;
-
-			if (get_user(new_timeout, p))
-				return -EFAULT;
-
-			if (ali_settimer(new_timeout))
-			    return -EINVAL;
-
-			ali_keepalive();
-			/* Fall */
-		}
-
-		case WDIOC_GETTIMEOUT:
-			return put_user(timeout, p);
-
-		default:
-			return -ENOTTY;
-	}
-}
-
-/*
- *	ali_open	-	handle open of ali watchdog
- *	@inode: inode from VFS
- *	@file: file from VFS
- *
- *	Open the ALi watchdog device. Ensure only one person opens it
- *	at a time. Also start the watchdog running.
- */
-
-static int ali_open(struct inode *inode, struct file *file)
-{
-	/* /dev/watchdog can only be opened once */
-	if (test_and_set_bit(0, &ali_is_open))
-		return -EBUSY;
-
-	/* Activate */
-	ali_start();
-	return nonseekable_open(inode, file);
-}
-
-/*
- *	ali_release	-	close an ALi watchdog
- *	@inode: inode from VFS
- *	@file: file from VFS
- *
- *	Close the ALi watchdog device. Actual shutdown of the timer
- *	only occurs if the magic sequence has been set.
- */
-
-static int ali_release(struct inode *inode, struct file *file)
-{
-	/*
-	 *      Shut off the timer.
-	 */
-	if (ali_expect_release == 42) {
-		ali_stop();
-	} else {
-		printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
-		ali_keepalive();
-	}
-	clear_bit(0, &ali_is_open);
-	ali_expect_release = 0;
-	return 0;
-}
-
-/*
- *	ali_notify_sys	-	System down notifier
- *
- *	Notifier for system down
- */
-
-
-static int ali_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
-{
-	if (code==SYS_DOWN || code==SYS_HALT) {
-		/* Turn the WDT off */
-		ali_stop();
-	}
-
-	return NOTIFY_DONE;
-}
-
-/*
- *	Data for PCI driver interface
- *
- *	This data only exists for exporting the supported
- *	PCI ids via MODULE_DEVICE_TABLE.  We do not actually
- *	register a pci_driver, because someone else might one day
- *	want to register another driver on the same PCI id.
- */
-
-static struct pci_device_id ali_pci_tbl[] = {
-	{ PCI_VENDOR_ID_AL, 0x1533, PCI_ANY_ID, PCI_ANY_ID,},
-	{ PCI_VENDOR_ID_AL, 0x1535, PCI_ANY_ID, PCI_ANY_ID,},
-	{ 0, },
-};
-MODULE_DEVICE_TABLE(pci, ali_pci_tbl);
-
-/*
- *	ali_find_watchdog	-	find a 1535 and 7101
- *
- *	Scans the PCI hardware for a 1535 series bridge and matching 7101
- *	watchdog device. This may be overtight but it is better to be safe
- */
-
-static int __init ali_find_watchdog(void)
-{
-	struct pci_dev *pdev;
-	u32 wdog;
-
-	/* Check for a 1533/1535 series bridge */
-	pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x1535, NULL);
-	if (pdev == NULL)
-		pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x1533, NULL);
-	if (pdev == NULL)
-		return -ENODEV;
-	pci_dev_put(pdev);
-
-	/* Check for the a 7101 PMU */
-	pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x7101, NULL);
-	if(pdev == NULL)
-		return -ENODEV;
-
-	if(pci_enable_device(pdev)) {
-		pci_dev_put(pdev);
-		return -EIO;
-	}
-
-	ali_pci = pdev;
-
-	/*
-	 *	Initialize the timer bits
-	 */
-	pci_read_config_dword(pdev, 0xCC, &wdog);
-
-	wdog &= ~0x3F;		/* Timer bits */
-	wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24));	/* Issued events */
-	wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9));	/* No monitor bits */
-
-	pci_write_config_dword(pdev, 0xCC, wdog);
-
-	return 0;
-}
-
-/*
- *	Kernel Interfaces
- */
-
-static const struct file_operations ali_fops = {
-	.owner =	THIS_MODULE,
-	.llseek =	no_llseek,
-	.write =	ali_write,
-	.ioctl =	ali_ioctl,
-	.open =		ali_open,
-	.release =	ali_release,
-};
-
-static struct miscdevice ali_miscdev = {
-	.minor =	WATCHDOG_MINOR,
-	.name =		"watchdog",
-	.fops =		&ali_fops,
-};
-
-static struct notifier_block ali_notifier = {
-	.notifier_call =	ali_notify_sys,
-};
-
-/*
- *	watchdog_init	-	module initialiser
- *
- *	Scan for a suitable watchdog and if so initialize it. Return an error
- *	if we cannot, the error causes the module to unload
- */
-
-static int __init watchdog_init(void)
-{
-	int ret;
-
-	spin_lock_init(&ali_lock);
-
-	/* Check whether or not the hardware watchdog is there */
-	if (ali_find_watchdog() != 0) {
-		return -ENODEV;
-	}
-
-	/* Check that the timeout value is within it's range ; if not reset to the default */
-	if (timeout < 1 || timeout >= 18000) {
-		timeout = WATCHDOG_TIMEOUT;
-		printk(KERN_INFO PFX "timeout value must be 0<timeout<18000, using %d\n",
-			timeout);
-	}
-
-	/* Calculate the watchdog's timeout */
-	ali_settimer(timeout);
-
-	ret = misc_register(&ali_miscdev);
-	if (ret != 0) {
-		printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-			WATCHDOG_MINOR, ret);
-		goto out;
-	}
-
-	ret = register_reboot_notifier(&ali_notifier);
-	if (ret != 0) {
-		printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
-			ret);
-		goto unreg_miscdev;
-	}
-
-	printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
-		timeout, nowayout);
-
-out:
-	return ret;
-unreg_miscdev:
-	misc_deregister(&ali_miscdev);
-	goto out;
-}
-
-/*
- *	watchdog_exit	-	module de-initialiser
- *
- *	Called while unloading a successfully installed watchdog module.
- */
-
-static void __exit watchdog_exit(void)
-{
-	/* Stop the timer before we leave */
-	ali_stop();
-
-	/* Deregister */
-	unregister_reboot_notifier(&ali_notifier);
-	misc_deregister(&ali_miscdev);
-	pci_dev_put(ali_pci);
-}
-
-module_init(watchdog_init);
-module_exit(watchdog_exit);
-
-MODULE_AUTHOR("Alan Cox");
-MODULE_DESCRIPTION("ALi M1535 PMU Watchdog Timer driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);