watchdog.h

Go to the documentation of this file.

/*
 *  Generic watchdog defines. Derived from..
 *
 * Berkshire PC Watchdog Defines
 * by Ken Hollis <[email protected]>
 *
 */

#ifndef _UAPI_LINUX_WATCHDOG_H
#define _UAPI_LINUX_WATCHDOG_H

#include <linux/ioctl.h>
#include <linux/types.h>

#define WATCHDOG_IOCTL_BASE 'W'

struct watchdog_info {
    __u32 options;      /* Options the card/driver supports */
    __u32 firmware_version; /* Firmware version of the card */
    __u8  identity[32]; /* Identity of the board */
};

#define WDIOC_GETSUPPORT    _IOR(WATCHDOG_IOCTL_BASE, 0, struct watchdog_info)
#define WDIOC_GETSTATUS     _IOR(WATCHDOG_IOCTL_BASE, 1, int)
#define WDIOC_GETBOOTSTATUS _IOR(WATCHDOG_IOCTL_BASE, 2, int)
#define WDIOC_GETTEMP       _IOR(WATCHDOG_IOCTL_BASE, 3, int)
#define WDIOC_SETOPTIONS    _IOR(WATCHDOG_IOCTL_BASE, 4, int)
#define WDIOC_KEEPALIVE     _IOR(WATCHDOG_IOCTL_BASE, 5, int)
#define WDIOC_SETTIMEOUT        _IOWR(WATCHDOG_IOCTL_BASE, 6, int)
#define WDIOC_GETTIMEOUT        _IOR(WATCHDOG_IOCTL_BASE, 7, int)
#define WDIOC_SETPRETIMEOUT _IOWR(WATCHDOG_IOCTL_BASE, 8, int)
#define WDIOC_GETPRETIMEOUT _IOR(WATCHDOG_IOCTL_BASE, 9, int)
#define WDIOC_GETTIMELEFT   _IOR(WATCHDOG_IOCTL_BASE, 10, int)

#define WDIOF_UNKNOWN       -1  /* Unknown flag error */
#define WDIOS_UNKNOWN       -1  /* Unknown status error */

#define WDIOF_OVERHEAT      0x0001  /* Reset due to CPU overheat */
#define WDIOF_FANFAULT      0x0002  /* Fan failed */
#define WDIOF_EXTERN1       0x0004  /* External relay 1 */
#define WDIOF_EXTERN2       0x0008  /* External relay 2 */
#define WDIOF_POWERUNDER    0x0010  /* Power bad/power fault */
#define WDIOF_CARDRESET     0x0020  /* Card previously reset the CPU */
#define WDIOF_POWEROVER     0x0040  /* Power over voltage */
#define WDIOF_SETTIMEOUT    0x0080  /* Set timeout (in seconds) */
#define WDIOF_MAGICCLOSE    0x0100  /* Supports magic close char */
#define WDIOF_PRETIMEOUT    0x0200  /* Pretimeout (in seconds), get/set */
#define WDIOF_ALARMONLY     0x0400  /* Watchdog triggers a management or
                       other external alarm not a reboot */
#define WDIOF_KEEPALIVEPING 0x8000  /* Keep alive ping reply */

#define WDIOS_DISABLECARD   0x0001  /* Turn off the watchdog timer */
#define WDIOS_ENABLECARD    0x0002  /* Turn on the watchdog timer */
#define WDIOS_TEMPPANIC     0x0004  /* Kernel panic on temperature trip */


#endif /* _UAPI_LINUX_WATCHDOG_H */