xref: /openbmc/linux/include/uapi/linux/watchdog.h (revision 6f52b16c)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3  *	Generic watchdog defines. Derived from..
4  *
5  * Berkshire PC Watchdog Defines
6  * by Ken Hollis <khollis@bitgate.com>
7  *
8  */
9 
10 #ifndef _UAPI_LINUX_WATCHDOG_H
11 #define _UAPI_LINUX_WATCHDOG_H
12 
13 #include <linux/ioctl.h>
14 #include <linux/types.h>
15 
16 #define	WATCHDOG_IOCTL_BASE	'W'
17 
18 struct watchdog_info {
19 	__u32 options;		/* Options the card/driver supports */
20 	__u32 firmware_version;	/* Firmware version of the card */
21 	__u8  identity[32];	/* Identity of the board */
22 };
23 
24 #define	WDIOC_GETSUPPORT	_IOR(WATCHDOG_IOCTL_BASE, 0, struct watchdog_info)
25 #define	WDIOC_GETSTATUS		_IOR(WATCHDOG_IOCTL_BASE, 1, int)
26 #define	WDIOC_GETBOOTSTATUS	_IOR(WATCHDOG_IOCTL_BASE, 2, int)
27 #define	WDIOC_GETTEMP		_IOR(WATCHDOG_IOCTL_BASE, 3, int)
28 #define	WDIOC_SETOPTIONS	_IOR(WATCHDOG_IOCTL_BASE, 4, int)
29 #define	WDIOC_KEEPALIVE		_IOR(WATCHDOG_IOCTL_BASE, 5, int)
30 #define	WDIOC_SETTIMEOUT        _IOWR(WATCHDOG_IOCTL_BASE, 6, int)
31 #define	WDIOC_GETTIMEOUT        _IOR(WATCHDOG_IOCTL_BASE, 7, int)
32 #define	WDIOC_SETPRETIMEOUT	_IOWR(WATCHDOG_IOCTL_BASE, 8, int)
33 #define	WDIOC_GETPRETIMEOUT	_IOR(WATCHDOG_IOCTL_BASE, 9, int)
34 #define	WDIOC_GETTIMELEFT	_IOR(WATCHDOG_IOCTL_BASE, 10, int)
35 
36 #define	WDIOF_UNKNOWN		-1	/* Unknown flag error */
37 #define	WDIOS_UNKNOWN		-1	/* Unknown status error */
38 
39 #define	WDIOF_OVERHEAT		0x0001	/* Reset due to CPU overheat */
40 #define	WDIOF_FANFAULT		0x0002	/* Fan failed */
41 #define	WDIOF_EXTERN1		0x0004	/* External relay 1 */
42 #define	WDIOF_EXTERN2		0x0008	/* External relay 2 */
43 #define	WDIOF_POWERUNDER	0x0010	/* Power bad/power fault */
44 #define	WDIOF_CARDRESET		0x0020	/* Card previously reset the CPU */
45 #define	WDIOF_POWEROVER		0x0040	/* Power over voltage */
46 #define	WDIOF_SETTIMEOUT	0x0080  /* Set timeout (in seconds) */
47 #define	WDIOF_MAGICCLOSE	0x0100	/* Supports magic close char */
48 #define	WDIOF_PRETIMEOUT	0x0200  /* Pretimeout (in seconds), get/set */
49 #define	WDIOF_ALARMONLY		0x0400	/* Watchdog triggers a management or
50 					   other external alarm not a reboot */
51 #define	WDIOF_KEEPALIVEPING	0x8000	/* Keep alive ping reply */
52 
53 #define	WDIOS_DISABLECARD	0x0001	/* Turn off the watchdog timer */
54 #define	WDIOS_ENABLECARD	0x0002	/* Turn on the watchdog timer */
55 #define	WDIOS_TEMPPANIC		0x0004	/* Kernel panic on temperature trip */
56 
57 
58 #endif /* _UAPI_LINUX_WATCHDOG_H */
59