77 lines
2.6 KiB
Groff
77 lines
2.6 KiB
Groff
.\"-
|
|
.\" Copyright (c) 2004 Dag-Erling Coïdan Smørgrav
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. The name of the author may not be used to endorse or promote products
|
|
.\" derived from this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 11, 2004
|
|
.Dt ICHWD 4 i386
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ichwd
|
|
.Nd Intel ICH watchdog timer driver
|
|
.Sh SYNOPSIS
|
|
.Cd device ichwd
|
|
.Sh DESCRIPTION
|
|
This driver provides access to the watchdog timer (WDT) present on all
|
|
Intel ICH chipsets.
|
|
.Pp
|
|
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.
|
|
.Pp
|
|
Note that on some ICH-based systems, the WDT may be present but
|
|
disabled, either in hardware or by the BIOS.
|
|
The
|
|
.Nm
|
|
driver attempts to detect this condition and will refuse to attach if
|
|
it believes the WDT is disabled.
|
|
.Sh SEE ALSO
|
|
.Xr watchdog 4 ,
|
|
.Xr watchdog 8 ,
|
|
.Xr watchdogd 8 ,
|
|
.Xr watchdog 9
|
|
.Rs
|
|
.%T Using the Intel ICH Family Watchdog Timer (WDT)
|
|
.%R Intel Application Note AP-725
|
|
.%O Document Number 292273-001
|
|
.Re
|
|
.Sh AUTHORS
|
|
.An -nosplit
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Wm. Daryl Hawkins Aq dhawkins@tamu.edu
|
|
and
|
|
.An Dag-Erling Sm\(/orgrav Aq des@FreeBSD.org .
|
|
This manual page was written by
|
|
.An Dag-Erling Sm\(/orgrav Aq des@FreeBSD.org .
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver appeared in
|
|
.Fx 5.3 .
|