#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/ipmi.h>
#include <linux/ipmi_smi.h>
#include <linux/mutex.h>
#include <linux/watchdog.h>
#include <linux/miscdevice.h>
#include <linux/init.h>
#include <linux/completion.h>
#include <linux/kdebug.h>
#include <linux/rwsem.h>
#include <linux/errno.h>
#include <asm/uaccess.h>
#include <linux/notifier.h>
#include <linux/nmi.h>
#include <linux/reboot.h>
#include <linux/wait.h>
#include <linux/poll.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/atomic.h>

Macros
#define	PFX "IPMI Watchdog: "

#define	WDOG_DONT_LOG (1 << 7)

#define	WDOG_DONT_STOP_ON_SET (1 << 6)

#define	WDOG_SET_TIMER_USE(byte, use) byte = ((byte) & 0xf8) \| ((use) & 0x7)

#define	WDOG_GET_TIMER_USE(byte) ((byte) & 0x7)

#define	WDOG_TIMER_USE_BIOS_FRB2 1

#define	WDOG_TIMER_USE_BIOS_POST 2

#define	WDOG_TIMER_USE_OS_LOAD 3

#define	WDOG_TIMER_USE_SMS_OS 4

#define	WDOG_TIMER_USE_OEM 5

#define	WDOG_SET_PRETIMEOUT_ACT(byte, use) byte = ((byte) & 0x8f) \| (((use) & 0x7) << 4)

#define	WDOG_GET_PRETIMEOUT_ACT(byte) (((byte) >> 4) & 0x7)

#define	WDOG_PRETIMEOUT_NONE 0

#define	WDOG_PRETIMEOUT_SMI 1

#define	WDOG_PRETIMEOUT_NMI 2

#define	WDOG_PRETIMEOUT_MSG_INT 3

#define	WDOG_PREOP_NONE 0

#define	WDOG_PREOP_PANIC 1

#define	WDOG_PREOP_GIVE_DATA 2

#define	WDOG_SET_TIMEOUT_ACT(byte, use) byte = ((byte) & 0xf8) \| ((use) & 0x7)

#define	WDOG_GET_TIMEOUT_ACT(byte) ((byte) & 0x7)

#define	WDOG_TIMEOUT_NONE 0

#define	WDOG_TIMEOUT_RESET 1

#define	WDOG_TIMEOUT_POWER_DOWN 2

#define	WDOG_TIMEOUT_POWER_CYCLE 3

#define	WDOG_EXPIRE_CLEAR_BIOS_FRB2 (1 << 1)

#define	WDOG_EXPIRE_CLEAR_BIOS_POST (1 << 2)

#define	WDOG_EXPIRE_CLEAR_OS_LOAD (1 << 3)

#define	WDOG_EXPIRE_CLEAR_SMS_OS (1 << 4)

#define	WDOG_EXPIRE_CLEAR_OEM (1 << 5)

#define	WDOG_SET_TIMEOUT(byte1, byte2, val) (byte1) = (((val) * 10) & 0xff), (byte2) = (((val) * 10) >> 8)

#define	WDOG_GET_TIMEOUT(byte1, byte2) (((byte1) \| ((byte2) << 8)) / 10)

#define	IPMI_WDOG_RESET_TIMER 0x22

#define	IPMI_WDOG_SET_TIMER 0x24

#define	IPMI_WDOG_GET_TIMER 0x25

#define	IPMI_WDOG_TIMER_NOT_INIT_RESP 0x80

#define	IPMI_SET_TIMEOUT_NO_HB 0

#define	IPMI_SET_TIMEOUT_HB_IF_NECESSARY 1

#define	IPMI_SET_TIMEOUT_FORCE_HB 2

#define	param_check_timeout param_check_int

#define	param_check_wdog_ifnum param_check_int

Typedefs
typedef int(*	action_fn )(const char intval, char outval)

Functions
	module_param (ifnum_to_use, wdog_ifnum, 0644)

	MODULE_PARM_DESC (ifnum_to_use,"The interface number to use for the watchdog ""timer. Setting to -1 defaults to the first registered ""interface")

	module_param (timeout, timeout, 0644)

	MODULE_PARM_DESC (timeout,"Timeout value in seconds.")

	module_param (pretimeout, timeout, 0644)

	MODULE_PARM_DESC (pretimeout,"Pretimeout value in seconds.")

	module_param_cb (action,&param_ops_str, action_op, 0644)

	MODULE_PARM_DESC (action,"Timeout action. One of: ""reset, none, power_cycle, power_off.")

	module_param_cb (preaction,&param_ops_str, preaction_op, 0644)

	MODULE_PARM_DESC (preaction,"Pretimeout action. One of: ""pre_none, pre_smi, pre_nmi, pre_int.")

	module_param_cb (preop,&param_ops_str, preop_op, 0644)

	MODULE_PARM_DESC (preop,"Pretimeout driver operation. One of: ""preop_none, preop_panic, preop_give_data.")

	module_param (start_now, int, 0444)

	MODULE_PARM_DESC (start_now,"Set to 1 to start the watchdog as""soon as the driver is loaded.")

	module_param (nowayout, bool, 0644)

	MODULE_PARM_DESC (nowayout,"Watchdog cannot be stopped once started ""(default=CONFIG_WATCHDOG_NOWAYOUT)")

	module_exit (ipmi_wdog_exit)

	module_init (ipmi_wdog_init)

	MODULE_LICENSE ("GPL")

	MODULE_AUTHOR ("Corey Minyard <[email protected]>")

	MODULE_DESCRIPTION ("watchdog timer based upon the IPMI interface.")

Macro Definition Documentation

#define IPMI_SET_TIMEOUT_FORCE_HB 2

Definition at line 180 of file ipmi_watchdog.c.

#define IPMI_SET_TIMEOUT_HB_IF_NECESSARY 1

Definition at line 179 of file ipmi_watchdog.c.

#define IPMI_SET_TIMEOUT_NO_HB 0

Definition at line 178 of file ipmi_watchdog.c.

#define IPMI_WDOG_GET_TIMER 0x25

Definition at line 140 of file ipmi_watchdog.c.

#define IPMI_WDOG_RESET_TIMER 0x22

Definition at line 138 of file ipmi_watchdog.c.

#define IPMI_WDOG_SET_TIMER 0x24

Definition at line 139 of file ipmi_watchdog.c.

#define IPMI_WDOG_TIMER_NOT_INIT_RESP 0x80

Definition at line 142 of file ipmi_watchdog.c.

#define param_check_timeout param_check_int

Definition at line 215 of file ipmi_watchdog.c.

#define param_check_wdog_ifnum param_check_int

Definition at line 278 of file ipmi_watchdog.c.

#define PFX "IPMI Watchdog: "

Definition at line 72 of file ipmi_watchdog.c.

#define WDOG_DONT_LOG (1 << 7)

Definition at line 79 of file ipmi_watchdog.c.

#define WDOG_DONT_STOP_ON_SET (1 << 6)

Definition at line 80 of file ipmi_watchdog.c.

#define WDOG_EXPIRE_CLEAR_BIOS_FRB2 (1 << 1)

Definition at line 120 of file ipmi_watchdog.c.

#define WDOG_EXPIRE_CLEAR_BIOS_POST (1 << 2)

Definition at line 121 of file ipmi_watchdog.c.

#define WDOG_EXPIRE_CLEAR_OEM (1 << 5)

Definition at line 124 of file ipmi_watchdog.c.

#define WDOG_EXPIRE_CLEAR_OS_LOAD (1 << 3)

Definition at line 122 of file ipmi_watchdog.c.

#define WDOG_EXPIRE_CLEAR_SMS_OS (1 << 4)

Definition at line 123 of file ipmi_watchdog.c.

#define WDOG_GET_PRETIMEOUT_ACT ( byte ) (((byte) >> 4) & 0x7)

Definition at line 93 of file ipmi_watchdog.c.

#define WDOG_GET_TIMEOUT	(	byte1,
		byte2
	)	(((byte1) \| ((byte2) << 8)) / 10)

Definition at line 135 of file ipmi_watchdog.c.

#define WDOG_GET_TIMEOUT_ACT ( byte ) ((byte) & 0x7)

Definition at line 108 of file ipmi_watchdog.c.

#define WDOG_GET_TIMER_USE ( byte ) ((byte) & 0x7)

Definition at line 83 of file ipmi_watchdog.c.

#define WDOG_PREOP_GIVE_DATA 2

Definition at line 103 of file ipmi_watchdog.c.

#define WDOG_PREOP_NONE 0

Definition at line 100 of file ipmi_watchdog.c.

#define WDOG_PREOP_PANIC 1

Definition at line 101 of file ipmi_watchdog.c.

#define WDOG_PRETIMEOUT_MSG_INT 3

Definition at line 97 of file ipmi_watchdog.c.

#define WDOG_PRETIMEOUT_NMI 2

Definition at line 96 of file ipmi_watchdog.c.

#define WDOG_PRETIMEOUT_NONE 0

Definition at line 94 of file ipmi_watchdog.c.

#define WDOG_PRETIMEOUT_SMI 1

Definition at line 95 of file ipmi_watchdog.c.

#define WDOG_SET_PRETIMEOUT_ACT	(	byte,
		use
	)	byte = ((byte) & 0x8f) \| (((use) & 0x7) << 4)

Definition at line 91 of file ipmi_watchdog.c.

#define WDOG_SET_TIMEOUT	(	byte1,
		byte2,
		val
	)	(byte1) = (((val) * 10) & 0xff), (byte2) = (((val) * 10) >> 8)

Definition at line 133 of file ipmi_watchdog.c.

#define WDOG_SET_TIMEOUT_ACT	(	byte,
		use
	)	byte = ((byte) & 0xf8) \| ((use) & 0x7)

Definition at line 106 of file ipmi_watchdog.c.

#define WDOG_SET_TIMER_USE	(	byte,
		use
	)	byte = ((byte) & 0xf8) \| ((use) & 0x7)

Definition at line 81 of file ipmi_watchdog.c.

#define WDOG_TIMEOUT_NONE 0

Definition at line 109 of file ipmi_watchdog.c.

#define WDOG_TIMEOUT_POWER_CYCLE 3

Definition at line 112 of file ipmi_watchdog.c.

#define WDOG_TIMEOUT_POWER_DOWN 2

Definition at line 111 of file ipmi_watchdog.c.

#define WDOG_TIMEOUT_RESET 1

Definition at line 110 of file ipmi_watchdog.c.

#define WDOG_TIMER_USE_BIOS_FRB2 1

Definition at line 84 of file ipmi_watchdog.c.

#define WDOG_TIMER_USE_BIOS_POST 2

Definition at line 85 of file ipmi_watchdog.c.

#define WDOG_TIMER_USE_OEM 5

Definition at line 88 of file ipmi_watchdog.c.

#define WDOG_TIMER_USE_OS_LOAD 3

Definition at line 86 of file ipmi_watchdog.c.

#define WDOG_TIMER_USE_SMS_OS 4

Definition at line 87 of file ipmi_watchdog.c.

Typedef Documentation

typedef int(* action_fn)(const char *intval, char *outval)

Definition at line 217 of file ipmi_watchdog.c.

Function Documentation

MODULE_AUTHOR ( "Corey Minyard <[email protected]>" )

MODULE_DESCRIPTION ( "watchdog timer based upon the IPMI interface." )

module_exit ( ipmi_wdog_exit )

module_init ( ipmi_wdog_init )

MODULE_LICENSE ( "GPL" )

module_param	(	ifnum_to_use	,
		wdog_ifnum	,
		0644
	)

module_param	(	timeout	,
		timeout	,
		0644
	)

module_param	(	pretimeout	,
		timeout	,
		0644
	)

module_param	(	start_now	,
		int	,
		0444
	)

module_param	(	nowayout	,
		bool	,
		0644
	)

module_param_cb	(	action	,
		&	param_ops_str,
		action_op	,
		0644
	)

module_param_cb	(	preaction	,
		&	param_ops_str,
		preaction_op	,
		0644
	)

module_param_cb	(	preop	,
		&	param_ops_str,
		preop_op	,
		0644
	)

MODULE_PARM_DESC	(	ifnum_to_use	,
		"The interface number to use for the watchdog ""timer. Setting to -1 defaults to the first registered ""interface"
	)

MODULE_PARM_DESC	(	timeout	,
		"Timeout value in seconds."
	)

MODULE_PARM_DESC	(	pretimeout	,
		"Pretimeout value in seconds."
	)

MODULE_PARM_DESC	(	action	,
		"Timeout action. One of: ""	reset,
		none	,
		power_cycle	,
		power_off."
	)

MODULE_PARM_DESC	(	preaction	,
		"Pretimeout action. One of: ""	pre_none,
		pre_smi	,
		pre_nmi	,
		pre_int."
	)

MODULE_PARM_DESC	(	preop	,
		"Pretimeout driver operation. One of: ""	preop_none,
		preop_panic	,
		preop_give_data."
	)

MODULE_PARM_DESC	(	start_now	,
		"Set to 1 to start the watchdog as""soon as the driver is loaded."
	)

MODULE_PARM_DESC	(	nowayout	,
		"Watchdog cannot be stopped once started ""(default=CONFIG_WATCHDOG_NOWAYOUT)"
	)

Macros

Typedefs

Functions

Macro Definition Documentation

Typedef Documentation

Function Documentation