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[WATCHDOG] wdt.c: remove #ifdef CONFIG_WDT_501

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Change the wdt.c watchdog driver so that the code is the same for
both the WDT500 as the WDT501-P card. The selection of the card
is now being done via the module parameter: 'type' instead of the
config option CONFIG_WDT_501.

Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Alan Cox 2009-03-22 10:46:42 +00:00 committed by Wim Van Sebroeck
parent 278aefc51b
commit 04bedfa542
2 changed files with 74 additions and 93 deletions
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15
drivers/watchdog/Kconfig
View File

@ -940,21 +940,6 @@ config WDT
To compile this driver as a module, choose M here: the
module will be called wdt.
config WDT_501
bool "WDT501 features"
depends on WDT
help
Saying Y here and creating a character special file /dev/temperature
with major number 10 and minor number 131 ("man mknod") will give
you a thermometer inside your computer: reading from
/dev/temperature yields one byte, the temperature in degrees
Fahrenheit. This works only if you have a WDT501P watchdog board
installed.
If you want to enable the Fan Tachometer on the WDT501P, then you
can do this via the tachometer parameter. Only do this if you have a
fan tachometer actually set up.
#
# PCI-based Watchdog Cards
#

152
drivers/watchdog/wdt.c
View File

@ -1,5 +1,5 @@
/*
* Industrial Computer Source WDT500/501 driver
* Industrial Computer Source WDT501 driver
*
* (c) Copyright 1996-1997 Alan Cox <alan@lxorguk.ukuu.org.uk>,
* All Rights Reserved.
@ -82,14 +82,16 @@ 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 */
static int type = 500;
module_param(type, int, 0);
MODULE_PARM_DESC(type,
"WDT501-P Card type (500 or 501 , default=500)");
/*
* Programming support
@ -158,7 +160,7 @@ static int wdt_stop(void)
* reloading the cascade counter.
*/
static int wdt_ping(void)
static void wdt_ping(void)
{
unsigned long flags;
spin_lock_irqsave(&wdt_lock, flags);
@ -169,7 +171,6 @@ static int wdt_ping(void)
wdt_ctr_load(1, wd_heartbeat); /* Heartbeat */
outb_p(0, WDT_DC); /* Enable watchdog */
spin_unlock_irqrestore(&wdt_lock, flags);
return 0;
}
/**
@ -193,7 +194,6 @@ static int wdt_set_heartbeat(int t)
/**
* 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
@ -202,36 +202,35 @@ static int wdt_set_heartbeat(int t)
* we then map the bits onto the status ioctl flags.
*/
static int wdt_get_status(int *status)
static int wdt_get_status(void)
{
unsigned char new_status;
int status = 0;
unsigned long flags;
spin_lock_irqsave(&wdt_lock, flags);
new_status = inb_p(WDT_SR);
spin_unlock_irqrestore(&wdt_lock, flags);
*status = 0;
if (new_status & WDC_SR_ISOI0)
*status |= WDIOF_EXTERN1;
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;
status |= WDIOF_EXTERN2;
if (type == 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;
return status;
}
#ifdef CONFIG_WDT_501
/**
* wdt_get_temperature:
*
@ -239,7 +238,7 @@ static int wdt_get_status(int *status)
* farenheit. It was designed by an imperial measurement luddite.
*/
static int wdt_get_temperature(int *temperature)
static int wdt_get_temperature(void)
{
unsigned short c;
unsigned long flags;
@ -247,10 +246,18 @@ static int wdt_get_temperature(int *temperature)
spin_lock_irqsave(&wdt_lock, flags);
c = inb_p(WDT_RT);
spin_unlock_irqrestore(&wdt_lock, flags);
*temperature = (c * 11 / 15) + 7;
return 0;
return (c * 11 / 15) + 7;
}
static void wdt_decode_501(int status)
{
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");
}
#endif /* CONFIG_WDT_501 */
/**
* wdt_interrupt:
@ -275,18 +282,13 @@ static irqreturn_t wdt_interrupt(int irq, void *dev_id)
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");
if (type == 501) {
wdt_decode_501(status);
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
@ -366,17 +368,18 @@ static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
/* 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 */
if (type == 501) {
ident.options |= (WDIOF_OVERHEAT|WDIOF_POWERUNDER|
WDIOF_POWEROVER);
if (tachometer)
ident.options |= WDIOF_FANFAULT;
}
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
wdt_get_status(&status);
status = wdt_get_status();
return put_user(status, p);
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
@ -446,7 +449,6 @@ static int wdt_release(struct inode *inode, struct file *file)
return 0;
}
#ifdef CONFIG_WDT_501
/**
* wdt_temp_read:
* @file: file handle to the watchdog board
@ -461,10 +463,7 @@ static int wdt_release(struct inode *inode, struct file *file)
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;
int temperature = wdt_get_temperature();
if (copy_to_user(buf, &temperature, 1))
return -EFAULT;
@ -497,7 +496,6 @@ static int wdt_temp_release(struct inode *inode, struct file *file)
{
return 0;
}
#endif /* CONFIG_WDT_501 */
/**
* notify_sys:
@ -539,7 +537,6 @@ static struct miscdevice wdt_miscdev = {
.fops = &wdt_fops,
};
#ifdef CONFIG_WDT_501
static const struct file_operations wdt_temp_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
@ -553,7 +550,6 @@ static struct miscdevice temp_miscdev = {
.name = "temperature",
.fops = &wdt_temp_fops,
};
#endif /* CONFIG_WDT_501 */
/*
* The WDT card needs to learn about soft shutdowns in order to
@ -577,9 +573,8 @@ static struct notifier_block wdt_notifier = {
static void __exit wdt_exit(void)
{
misc_deregister(&wdt_miscdev);
#ifdef CONFIG_WDT_501
misc_deregister(&temp_miscdev);
#endif /* CONFIG_WDT_501 */
if (type == 501)
misc_deregister(&temp_miscdev);
unregister_reboot_notifier(&wdt_notifier);
free_irq(irq, NULL);
release_region(io, 8);
@ -597,12 +592,17 @@ static int __init wdt_init(void)
{
int ret;
if (type != 500 && type != 501) {
printk(KERN_ERR "wdt: unknown card type '%d'.\n", type);
return -ENODEV;
}
/* 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);
printk(KERN_INFO "wdt: heartbeat value must be "
"0 < heartbeat < 65536, using %d\n", WD_TIMO);
}
if (!request_region(io, 8, "wdt501p")) {
@ -625,15 +625,14 @@ static int __init wdt_init(void)
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;
if (type == 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) {
@ -643,28 +642,25 @@ static int __init wdt_init(void)
goto outmisc;
}
ret = 0;
printk(KERN_INFO "WDT500/501-P driver 0.10 at 0x%04x (Interrupt %d). heartbeat=%d sec (nowayout=%d)\n",
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",
if (type == 501)
printk(KERN_INFO "wdt: Fan Tachometer is %s\n",
(tachometer ? "Enabled" : "Disabled"));
#endif /* CONFIG_WDT_501 */
out:
return ret;
return 0;
outmisc:
#ifdef CONFIG_WDT_501
misc_deregister(&temp_miscdev);
if (type == 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;
out:
return ret;
}
module_init(wdt_init);