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path: root/drivers/char/watchdog/pcwd_pci.c
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Diffstat (limited to 'drivers/char/watchdog/pcwd_pci.c')
-rw-r--r--drivers/char/watchdog/pcwd_pci.c34
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/char/watchdog/pcwd_pci.c b/drivers/char/watchdog/pcwd_pci.c
index f4872c871063..61a89e959642 100644
--- a/drivers/char/watchdog/pcwd_pci.c
+++ b/drivers/char/watchdog/pcwd_pci.c
@@ -1,7 +1,7 @@
/*
* Berkshire PCI-PC Watchdog Card Driver
*
- * (c) Copyright 2003-2005 Wim Van Sebroeck <wim@iguana.be>.
+ * (c) Copyright 2003-2007 Wim Van Sebroeck <wim@iguana.be>.
*
* Based on source code of the following authors:
* Ken Hollis <kenji@bitgate.com>,
@@ -51,8 +51,8 @@
#include <asm/io.h> /* For inb/outb/... */
/* Module and version information */
-#define WATCHDOG_VERSION "1.02"
-#define WATCHDOG_DATE "03 Sep 2005"
+#define WATCHDOG_VERSION "1.03"
+#define WATCHDOG_DATE "21 Jan 2007"
#define WATCHDOG_DRIVER_NAME "PCI-PC Watchdog"
#define WATCHDOG_NAME "pcwd_pci"
#define PFX WATCHDOG_NAME ": "
@@ -96,6 +96,18 @@
#define CMD_WRITE_WATCHDOG_TIMEOUT 0x19
#define CMD_GET_CLEAR_RESET_COUNT 0x84
+/* Watchdog's Dip Switch heartbeat values */
+static const int heartbeat_tbl [] = {
+ 5, /* OFF-OFF-OFF = 5 Sec */
+ 10, /* OFF-OFF-ON = 10 Sec */
+ 30, /* OFF-ON-OFF = 30 Sec */
+ 60, /* OFF-ON-ON = 1 Min */
+ 300, /* ON-OFF-OFF = 5 Min */
+ 600, /* ON-OFF-ON = 10 Min */
+ 1800, /* ON-ON-OFF = 30 Min */
+ 3600, /* ON-ON-ON = 1 hour */
+};
+
/* We can only use 1 card due to the /dev/watchdog restriction */
static int cards_found;
@@ -119,14 +131,14 @@ static int debug = QUIET;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level: 0=Quiet, 1=Verbose, 2=Debug (default=0)");
-#define WATCHDOG_HEARTBEAT 2 /* 2 sec default heartbeat */
+#define WATCHDOG_HEARTBEAT 0 /* default heartbeat = delay-time from dip-switches */
static int heartbeat = WATCHDOG_HEARTBEAT;
module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)");
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Internal functions
@@ -286,7 +298,9 @@ static int pcipcwd_stop(void)
static int pcipcwd_keepalive(void)
{
/* Re-trigger watchdog by writing to port 0 */
+ spin_lock(&pcipcwd_private.io_lock);
outb_p(0x42, pcipcwd_private.io_addr); /* send out any data */
+ spin_unlock(&pcipcwd_private.io_lock);
if (debug >= DEBUG)
printk(KERN_DEBUG PFX "Watchdog keepalive signal send\n");
@@ -373,7 +387,9 @@ static int pcipcwd_get_temperature(int *temperature)
if (!pcipcwd_private.supports_temp)
return -ENODEV;
+ spin_lock(&pcipcwd_private.io_lock);
*temperature = inb_p(pcipcwd_private.io_addr);
+ spin_unlock(&pcipcwd_private.io_lock);
/*
* Convert celsius to fahrenheit, since this was
@@ -711,6 +727,10 @@ static int __devinit pcipcwd_card_init(struct pci_dev *pdev,
/* Show info about the card itself */
pcipcwd_show_card_info();
+ /* If heartbeat = 0 then we use the heartbeat from the dip-switches */
+ if (heartbeat == 0)
+ heartbeat = heartbeat_tbl[(pcipcwd_get_option_switches() & 0x07)];
+
/* Check that the heartbeat value is within it's range ; if not reset to the default */
if (pcipcwd_set_heartbeat(heartbeat)) {
pcipcwd_set_heartbeat(WATCHDOG_HEARTBEAT);
@@ -798,6 +818,8 @@ static int __init pcipcwd_init_module(void)
static void __exit pcipcwd_cleanup_module(void)
{
pci_unregister_driver(&pcipcwd_driver);
+
+ printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
}
module_init(pcipcwd_init_module);