140 lines
3.9 KiB
Groff
140 lines
3.9 KiB
Groff
.\" $OpenBSD: lm.4,v 1.16 2007/05/26 22:38:55 cnst Exp $
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.\" $NetBSD: lm.4,v 1.11 2001/09/22 01:22:49 wiz Exp $
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.\"
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.\" Copyright (c) 2000 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Bill Squier.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd August 19, 2007
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.Dt LM 4
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.Os
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.Sh NAME
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.Nm lm
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.Nd "NatSemi LM78/79/81 and Winbond Super I/O Hardware Monitor"
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.Sh SYNOPSIS
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.Cd "device isa"
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.Cd "device lm"
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.Pp
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In
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.Pa /boot/device.hints :
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.Cd hint.lm.0.at="isa"
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.Cd hint.lm.0.port="0x290"
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.Cd hint.lm.1.at="isa"
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.Cd hint.lm.1.port="0x280"
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.Cd hint.lm.2.at="isa"
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.Cd hint.lm.2.port="0x310"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the
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.Tn National Semiconductor
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LM 78/79/81 and
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.Tn Winbond
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Super I/O
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hardware monitors,
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and registers compatible chips under the
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.Dv HW_SENSORS
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.Xr sysctl 3
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tree.
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.Sh HARDWARE
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Chips supported by the
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.Nm
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driver include:
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.Pp
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.Bl -dash -offset indent -compact
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.It
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National Semiconductor LM78 and LM78-J
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.It
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National Semiconductor LM79
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.It
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National Semiconductor LM81
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.It
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Winbond W83627HF, W83627THF, W83637HF and W83697HF
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.It
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Winbond W83627DHG and W83627EHF
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.It
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Winbond W83781D, W83782D and W83783S
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.It
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Winbond W83791D, W83791SD and W83792D
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.It
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ASUS AS99127F
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.El
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.Sh SEE ALSO
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.Xr systat 1 ,
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.Xr sysctl 3 ,
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.Xr sensorsd 8 ,
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.Xr sysctl 8
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Nx 1.5 ;
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.Ox
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support was added in
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.Ox 3.4 ;
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.Fx
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support was added in
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.Fx 8.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Bill Squier
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and ported to
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.Ox 3.4
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by
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.An Alexander Yurchenko Aq grange@openbsd.org .
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The driver was largely rewritten for
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.Ox 3.9
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by
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.An Mark Kettenis Aq kettenis@openbsd.org .
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The driver was then ported to
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.Fx
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by
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.An Constantine A. Murenin Aq cnst@FreeBSD.org
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as a part of a Google Summer of Code 2007 project.
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.Sh CAVEATS
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Some vendors connect these chips to non-standard thermal diodes and
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resistors.
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This will result in bogus sensor values.
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.Sh BUGS
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Interrupt support is unimplemented.
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.Pp
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There are currently no known pnpbios IDs assigned to LM chips.
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.Pp
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This driver attaches to the Winbond W83791SD chip even though that
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chip does not have any sensors.
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