ICHWD(4FREEBSD) - Linux man page online | Special files
Device driver for the Intel ICH watchdog interrupt timer.
Chapter
August 20, 2008
ICHWD(4) BSD Kernel Interfaces Manual ICHWD(4)
@tamu.edu> of Texas A&M Univer‐
sity and Dag-Erling Smørgrav <
@FreeBSD.org>. This manual page was written by Dag-Erling
Smørgrav <@FreeBSD.org>.
NAME
ichwd — device driver for the Intel ICH watchdog interrupt timerSYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configura‐ tion file: device ichwd Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): ichwd_load="YES"DESCRIPTION
The ichwd driver provides watchdog(4) support for the watchdog interrupt timer present on all Intel ICH motherboard chipsets. The ICH WDT counts down in ticks of approximately 0.6 seconds; the exact value depends on hardware quality and environmental factors. Supported watchdog intervals range from 2 to 63 ticks. Note that on some ICH-based systems, the WDT may be present but disabled, either in hardware or by the BIOS. The ichwd driver attempts to detect this condition and will refuse to attach if it believes the WDT is disabled.SEE ALSO
watchdog(4), watchdog(8), watchdogd(8), watchdog(9) Using the Intel ICH Family Watchdog Timer (WDT), Intel Application Note AP-725, Document Number 292273-001.HISTORY
The ichwd driver first appeared in FreeBSD 5.3.AUTHORS
The ichwd driver was written by Wm. Daryl Hawkins <@tamu.edu> of Texas A&M Univer‐
sity and Dag-Erling Smørgrav <@FreeBSD.org>. This manual page was written by Dag-Erling
Smørgrav <@FreeBSD.org>.| This manual | Reference | Other manuals |
|---|---|---|
| ichwd(4freebsd) | referred by | |
| refer to | watchdog(4freebsd) | watchdog(8) | watchdog(9freebsd) |