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nexedi
linux
Commits
3c8ba560
Commit
3c8ba560
authored
Jan 09, 2003
by
Dave Jones
Committed by
Dave Jones
Jan 09, 2003
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[WATCHDOG] pcwd driver update from 2.4
parent
a9e7da60
Changes
1
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1 changed file
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35 additions
and
12 deletions
+35
-12
drivers/char/watchdog/pcwd.c
drivers/char/watchdog/pcwd.c
+35
-12
No files found.
drivers/char/watchdog/pcwd.c
View file @
3c8ba560
...
...
@@ -40,6 +40,8 @@
* fairly useless proc entry.
* 990610 removed said useless proc code for the merge <alan>
* 000403 Removed last traces of proc code. <davej>
* 011214 Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT <Matt_Domsch@dell.com>
* Added timeout module option to override default
*/
#include <linux/module.h>
...
...
@@ -76,7 +78,7 @@
*/
static
int
pcwd_ioports
[]
=
{
0x270
,
0x350
,
0x370
,
0x000
};
#define WD_VER "1.1
0 (06/05/99
)"
#define WD_VER "1.1
2 (12/14/2001
)"
/*
* It should be noted that PCWD_REVISION_B was removed because A and B
...
...
@@ -88,7 +90,22 @@ static int pcwd_ioports[] = { 0x270, 0x350, 0x370, 0x000 };
#define PCWD_REVISION_A 1
#define PCWD_REVISION_C 2
#define WD_TIMEOUT 3
/* 1 1/2 seconds for a timeout */
#define WD_TIMEOUT 4
/* 2 seconds for a timeout */
static
int
timeout_val
=
WD_TIMEOUT
;
static
int
timeout
=
2
;
MODULE_PARM
(
timeout
,
"i"
);
MODULE_PARM_DESC
(
timeout
,
"Watchdog timeout in seconds (default=2)"
);
#ifdef CONFIG_WATCHDOG_NOWAYOUT
static
int
nowayout
=
1
;
#else
static
int
nowayout
=
0
;
#endif
MODULE_PARM
(
nowayout
,
"i"
);
MODULE_PARM_DESC
(
nowayout
,
"Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"
);
/*
* These are the defines for the PC Watchdog card, revision A.
...
...
@@ -121,7 +138,7 @@ static int __init pcwd_checkcard(void)
if
(
prev_card_dat
==
0xFF
)
return
0
;
while
(
count
<
WD_TIMEOUT
)
{
while
(
count
<
timeout_val
)
{
/* Read the raw card data from the port, and strip off the
first 4 bits */
...
...
@@ -450,16 +467,16 @@ static int pcwd_close(struct inode *ino, struct file *filep)
{
if
(
minor
(
ino
->
i_rdev
)
==
WATCHDOG_MINOR
)
{
#ifndef CONFIG_WATCHDOG_NOWAYOUT
/* Disable the board */
if
(
revision
==
PCWD_REVISION_C
)
{
spin_lock
(
&
io_lock
);
outb_p
(
0xA5
,
current_readport
+
3
);
outb_p
(
0xA5
,
current_readport
+
3
);
spin_unlock
(
&
io_lock
);
if
(
!
nowayout
)
{
/* Disable the board */
if
(
revision
==
PCWD_REVISION_C
)
{
spin_lock
(
&
io_lock
);
outb_p
(
0xA5
,
current_readport
+
3
);
outb_p
(
0xA5
,
current_readport
+
3
);
spin_unlock
(
&
io_lock
);
}
atomic_inc
(
&
open_allowed
);
}
atomic_inc
(
&
open_allowed
);
#endif
}
return
0
;
}
...
...
@@ -560,9 +577,15 @@ static struct miscdevice temp_miscdev = {
&
pcwd_fops
};
static
void
__init
pcwd_validate_timeout
(
void
)
{
timeout_val
=
timeout
*
2
;
}
static
int
__init
pcwatchdog_init
(
void
)
{
int
i
,
found
=
0
;
pcwd_validate_timeout
();
spin_lock_init
(
&
io_lock
);
revision
=
PCWD_REVISION_A
;
...
...
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