56 lines
1.8 KiB
Groff
56 lines
1.8 KiB
Groff
.\" $NetBSD: pwdog.4,v 1.4 2014/03/18 18:20:39 riastradh Exp $
|
|
.\" $OpenBSD: pwdog.4,v 1.6 2007/12/23 22:16:39 jmc Exp $
|
|
.\"
|
|
.\" Copyright (c) 2011 Marc Balmer <mbalmer@NetBSD.org>
|
|
.\" Copyright (c) 2006 Marc Balmer <marc@msys.ch>
|
|
.\"
|
|
.\" Permission to use, copy, modify, and distribute this software for any
|
|
.\" purpose with or without fee is hereby granted, provided that the above
|
|
.\" copyright notice and this permission notice appear in all copies.
|
|
.\"
|
|
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
.\"
|
|
.Dd August 11, 2011
|
|
.Dt PWDOG 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm pwdog
|
|
.Nd Quancom PWDOG1 watchdog timer device
|
|
.Sh SYNOPSIS
|
|
.Cd "pwdog0 at pci?"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for Quancom PWDOG1 boards.
|
|
.Pp
|
|
If the kernel crashes, the watchdog timer is not reset and the system will
|
|
reboot (assuming a proper connection is made between the PWDOG1 and
|
|
the motherboard).
|
|
Alternatively, the watchdog can be reinitialized via a userland process which
|
|
ensures that process scheduling, not just kernel timeout processing, is still
|
|
taking place.
|
|
.Pp
|
|
The timeout period of the PWDOG1 card is set using DIP switches and cannot
|
|
be changed by software.
|
|
.Sh SEE ALSO
|
|
.Xr intro 4 ,
|
|
.Xr pci 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver first appeared in
|
|
.Ox 4.1
|
|
and
|
|
.Nx 6.0 .
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm
|
|
driver was written by
|
|
.An Marc Balmer Aq Mt mbalmer@NetBSD.org .
|