$OpenBSD: pwdog.4,v 1.7 2013/07/16 16:05:49 schwarze Exp $
Copyright (c) 2006 Marc Balmer <mbalmer@openbsd.org>
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 $Mdocdate: December 23 2007 $ .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.
Copyright (c) 2006 Marc Balmer <mbalmer@openbsd.org>
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 $Mdocdate: December 23 2007 $ .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.
p 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. See .Xr watchdog 4 and .Xr watchdogd 8 for more information.
p 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 , .Xr watchdog 4 , .Xr watchdogd 8 .Sh HISTORY The .Nm driver first appeared in .Ox 4.1 . .Sh AUTHORS The .Nm driver was written by .An Marc Balmer Aq Mt mbalmer@openbsd.org .