snowbird/watchdog/piclwatchdog.c

4  * The contents of this file are subject to the terms of the
24  * Use is subject to license terms.
30  * This module is used to monitor and control watchdog timer for
73 typedef struct { /* used to keep track of time taken for last 5 pats */
83 static int	wd_fd = -1;	/* fd used to send watchdog commands */
126  * This function parses wd.conf file to set the tunables
189 	/* make a call to smc library to send cmd */
220 	/* make a call to smc library to send cmd */
374  * Sends a command to SMC to reset the watchdog-timers
399 	/* make a call to smc library to send cmd */
421 /* used to set the new values for watchdog and start the watchdog */
449 	/* make a call to smc library to send cmd */
534 	timestruc_t to;
546 		/* reset pat-time to zero */
554 		/* change the priority of thread to realtime class */
582 			/* no need to pat */
600 			/* no need to pat */
660 			to.tv_sec = tp.tv_sec + sec;
662 				to.tv_sec +=  1;
663 				to.tv_nsec = (nano_sec +
666 				to.tv_nsec = nano_sec + (tp.tv_usec * 1000);
669 			err = cond_timedwait(&patting_cv, &patting_lock, &to);
711  * Sends a cmd to SMC to stop watchdog timers
734 	/* make a call to smc library to send cmd */
745  * under controller. This is used to arm, disarm the watchdog-timers
746  * in response to user actions
803 	 * check to see if the owner is still alive using procfs
952 /* volatile call back function to read the watchdog L1 status */
986  * this function is used to read the state of L2 timer
1022 /* volatile call back function to read the watchdog L2 status */
1207 		 * watchdog from os level and continue to pat
1224  * wrapper for ptree interface to create property
1235 	picl_prophdl_t	*propp,		/* pointer to prop_handle */
1296 	/* Add wd-op property to watchdog controller node */
1309 	/* create L1 node and add to controller */
1317 	/* create L2 node and add to controller */
1585 	/* thread used to pat watchdog */
1617 	/* if watchdog-enable is set to false dont intialize wd subsystem */
1643  * volatile function to read the timeout
1660  * volatile function to read the action
1700  * volatile function to write the action
1767  * volatile function to write the timeout