/*
* intel TCO vendor specific watchdog driver support
*
- * (c) Copyright 2006 Wim Van Sebroeck <wim@iguana.be>.
+ * (c) Copyright 2006-2008 Wim Van Sebroeck <wim@iguana.be>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
*/
/* Module and version information */
-#define DRV_NAME "iTCO_vendor_support"
-#define DRV_VERSION "1.01"
-#define DRV_RELDATE "11-Nov-2006"
+#define DRV_NAME "iTCO_vendor_support"
+#define DRV_VERSION "1.02"
#define PFX DRV_NAME ": "
/* Includes */
#include <linux/kernel.h> /* For printk/panic/... */
#include <linux/init.h> /* For __init/__exit/... */
#include <linux/ioport.h> /* For io-port access */
+#include <linux/io.h> /* For inb/outb/... */
-#include <asm/io.h> /* For inb/outb/... */
+#include "iTCO_vendor.h"
/* iTCO defines */
#define SMI_EN acpibase + 0x30 /* SMI Control and Enable Register */
-#define TCOBASE acpibase + 0x60 /* TCO base address */
-#define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */
+#define TCOBASE acpibase + 0x60 /* TCO base address */
+#define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */
/* List of vendor support modes */
-#define SUPERMICRO_OLD_BOARD 1 /* SuperMicro Pentium 3 Era 370SSE+-OEM1/P3TSSE */
-#define SUPERMICRO_NEW_BOARD 2 /* SuperMicro Pentium 4 / Xeon 4 / EMT64T Era Systems */
+/* SuperMicro Pentium 3 Era 370SSE+-OEM1/P3TSSE */
+#define SUPERMICRO_OLD_BOARD 1
+/* SuperMicro Pentium 4 / Xeon 4 / EMT64T Era Systems */
+#define SUPERMICRO_NEW_BOARD 2
-static int vendorsupport = 0;
+static int vendorsupport;
module_param(vendorsupport, int, 0);
MODULE_PARM_DESC(vendorsupport, "iTCO vendor specific support mode, default=0 (none), 1=SuperMicro Pent3, 2=SuperMicro Pent4+");
* 20.6 seconds.
*/
-static void supermicro_old_pre_start(unsigned long acpibase)
-{
- unsigned long val32;
-
- val32 = inl(SMI_EN);
- val32 &= 0xffffdfff; /* Turn off SMI clearing watchdog */
- outl(val32, SMI_EN); /* Needed to activate watchdog */
-}
-
-static void supermicro_old_pre_stop(unsigned long acpibase)
-{
- unsigned long val32;
-
- val32 = inl(SMI_EN);
- val32 &= 0x00002000; /* Turn on SMI clearing watchdog */
- outl(val32, SMI_EN); /* Needed to deactivate watchdog */
-}
-
static void supermicro_old_pre_keepalive(unsigned long acpibase)
{
/* Reload TCO Timer (done in iTCO_wdt_keepalive) + */
* For P4DPx:
* BIOS setup -> Advanced -> I/O Device Configuration -> Watch Dog
* This setting enables or disables Watchdog function. When enabled, the
- * default watchdog timer is set to be 5 minutes (about 4’35”). It is
+ * default watchdog timer is set to be 5 minutes (about 4m35s). It is
* enough to load and run the OS. The application (service or driver) has
* to take over the control once OS is running up and before watchdog
* expires.
*/
/* I/O Port's */
-#define SM_REGINDEX 0x2e /* SuperMicro ICH4+ Register Index */
-#define SM_DATAIO 0x2f /* SuperMicro ICH4+ Register Data I/O */
+#define SM_REGINDEX 0x2e /* SuperMicro ICH4+ Register Index */
+#define SM_DATAIO 0x2f /* SuperMicro ICH4+ Register Data I/O */
/* Control Register's */
-#define SM_CTLPAGESW 0x07 /* SuperMicro ICH4+ Control Page Switch */
-#define SM_CTLPAGE 0x08 /* SuperMicro ICH4+ Control Page Num */
+#define SM_CTLPAGESW 0x07 /* SuperMicro ICH4+ Control Page Switch */
+#define SM_CTLPAGE 0x08 /* SuperMicro ICH4+ Control Page Num */
-#define SM_WATCHENABLE 0x30 /* Watchdog enable: Bit 0: 0=off, 1=on */
+#define SM_WATCHENABLE 0x30 /* Watchdog enable: Bit 0: 0=off, 1=on */
-#define SM_WATCHPAGE 0x87 /* Watchdog unlock control page */
+#define SM_WATCHPAGE 0x87 /* Watchdog unlock control page */
-#define SM_ENDWATCH 0xAA /* Watchdog lock control page */
+#define SM_ENDWATCH 0xAA /* Watchdog lock control page */
-#define SM_COUNTMODE 0xf5 /* Watchdog count mode select */
- /* (Bit 3: 0 = seconds, 1 = minutes */
+#define SM_COUNTMODE 0xf5 /* Watchdog count mode select */
+ /* (Bit 3: 0 = seconds, 1 = minutes */
-#define SM_WATCHTIMER 0xf6 /* 8-bits, Watchdog timer counter (RW) */
+#define SM_WATCHTIMER 0xf6 /* 8-bits, Watchdog timer counter (RW) */
-#define SM_RESETCONTROL 0xf7 /* Watchdog reset control */
- /* Bit 6: timer is reset by kbd interrupt */
- /* Bit 7: timer is reset by mouse interrupt */
+#define SM_RESETCONTROL 0xf7 /* Watchdog reset control */
+ /* Bit 6: timer is reset by kbd interrupt */
+ /* Bit 7: timer is reset by mouse interrupt */
static void supermicro_new_unlock_watchdog(void)
{
- outb(SM_WATCHPAGE, SM_REGINDEX); /* Write 0x87 to port 0x2e twice */
+ /* Write 0x87 to port 0x2e twice */
outb(SM_WATCHPAGE, SM_REGINDEX);
-
- outb(SM_CTLPAGESW, SM_REGINDEX); /* Switch to watchdog control page */
+ outb(SM_WATCHPAGE, SM_REGINDEX);
+ /* Switch to watchdog control page */
+ outb(SM_CTLPAGESW, SM_REGINDEX);
outb(SM_CTLPAGE, SM_DATAIO);
}
outb(val, SM_DATAIO);
/* Write heartbeat interval to WDOG */
- outb (SM_WATCHTIMER, SM_REGINDEX);
+ outb(SM_WATCHTIMER, SM_REGINDEX);
outb((heartbeat & 255), SM_DATAIO);
/* Make sure keyboard/mouse interrupts don't interfere */
void iTCO_vendor_pre_start(unsigned long acpibase,
unsigned int heartbeat)
{
- if (vendorsupport == SUPERMICRO_OLD_BOARD)
- supermicro_old_pre_start(acpibase);
- else if (vendorsupport == SUPERMICRO_NEW_BOARD)
+ if (vendorsupport == SUPERMICRO_NEW_BOARD)
supermicro_new_pre_start(heartbeat);
}
EXPORT_SYMBOL(iTCO_vendor_pre_start);
void iTCO_vendor_pre_stop(unsigned long acpibase)
{
- if (vendorsupport == SUPERMICRO_OLD_BOARD)
- supermicro_old_pre_stop(acpibase);
- else if (vendorsupport == SUPERMICRO_NEW_BOARD)
+ if (vendorsupport == SUPERMICRO_NEW_BOARD)
supermicro_new_pre_stop();
}
EXPORT_SYMBOL(iTCO_vendor_pre_stop);
int iTCO_vendor_check_noreboot_on(void)
{
- switch(vendorsupport) {
+ switch (vendorsupport) {
case SUPERMICRO_OLD_BOARD:
return 0;
default:
static int __init iTCO_vendor_init_module(void)
{
- printk (KERN_INFO PFX "vendor-support=%d\n", vendorsupport);
+ printk(KERN_INFO PFX "vendor-support=%d\n", vendorsupport);
return 0;
}
static void __exit iTCO_vendor_exit_module(void)
{
- printk (KERN_INFO PFX "Module Unloaded\n");
+ printk(KERN_INFO PFX "Module Unloaded\n");
}
module_init(iTCO_vendor_init_module);
git.openpandora.org / pandora-kernel.git / blobdiff