drivers/watchdog/pcwd.c

9  * 960108	Fixed end-of-file pointer (Thanks to Dan Hollis), added
12  * 960716	Made functional and cosmetic changes to the source for
23  *		added watchdog disable/re-enable routines.  Added firmware
28  *		drivers to panic the system if it's overheating at bootup.
35  *		Michael Meskes <meskes@debian.org>.
57 #include <linux/errno.h>	/* For the -ENODEV/... values */
68 #include <linux/ioport.h>	/* For io-port access */
76 #define WATCHDOG_DRIVER_NAME "ISA-PC Watchdog"
92  * These are the auto-probe addresses available.
102  * PCI-PC Watchdog card.
115 							on-board processor */
123 							(1:SW1 <-> 0:SW2) */
148 	20,	/* OFF-OFF-OFF	= 20 Sec  */
149 	40,	/* OFF-OFF-ON	= 40 Sec  */
150 	60,	/* OFF-ON-OFF	=  1 Min  */
151 	300,	/* OFF-ON-ON	=  5 Min  */
152 	600,	/* ON-OFF-OFF	= 10 Min  */
153 	1800,	/* ON-OFF-ON	= 30 Min  */
154 	3600,	/* ON-ON-OFF	=  1 Hour */
155 	7200,	/* ON-ON-ON	=  2 hour */
174 /* this is private data for each ISA-PC watchdog card */
198 /* default heartbeat = delay-time from dip-switches */
203 	"(2 <= heartbeat <= 7200 or 0=delay-time from dip-switches, default="
340 			"ISA-PC Watchdog (REV.A) detected at port 0x%04x\n",  in pcwd_show_card_info()
344 		printk(KERN_INFO PFX "ISA-PC Watchdog (REV.C) detected at port "  in pcwd_show_card_info()
377 			"No previous trip detected - Cold boot or reset\n");  in pcwd_show_card_info()
398 			/* Re-trigger watchdog by writing to port 0 */  in pcwd_timer_ping()
402 		/* Re-set the timer interval */  in pcwd_timer_ping()
430 			return -EIO;  in pcwd_start()
458 			return -EIO;  in pcwd_stop()
482 		return -EINVAL;  in pcwd_set_heartbeat()
508 		 * over-temperature condition. And the reboot  in pcwd_get_status()
576 		return -1;  in pcwd_get_temperature()
580 		return -ENODEV;  in pcwd_get_temperature()
622 			return -EFAULT;  in pcwd_ioctl()
634 			return -EFAULT;  in pcwd_ioctl()
641 				return -EFAULT;  in pcwd_ioctl()
656 		return -EINVAL;  in pcwd_ioctl()
664 			return -EFAULT;  in pcwd_ioctl()
667 			return -EINVAL;  in pcwd_ioctl()
676 		return -ENOTTY;  in pcwd_ioctl()
696 					return -EFAULT;  in pcwd_write()
709 		return -EBUSY;  in pcwd_open()
742 		return -EFAULT;  in pcwd_temp_read()
745 		return -EFAULT;  in pcwd_temp_read()
753 		return -ENODEV;  in pcwd_temp_open()
883 		return -ENODEV;  in pcwd_isa_probe()
887 		printk(KERN_ERR PFX "No I/O-Address for card detected\n");  in pcwd_isa_probe()
888 		return -ENODEV;  in pcwd_isa_probe()
901 		ret = -EIO;  in pcwd_isa_probe()
927 	/* If heartbeat = 0 then we use the heartbeat from the dip-switches */  in pcwd_isa_probe()
971 	cards_found--;  in pcwd_isa_probe()
995 	cards_found--;  in pcwd_isa_remove()
1036 MODULE_DESCRIPTION("Berkshire ISA-PC Watchdog driver");