2008-04-12 14:08:24 +00:00
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.\"-
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.\" Copyright (c) 2008 Rui Paulo
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.\" All rights reserved.
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd April 8, 2008
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2009-03-13 16:42:24 +00:00
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.Dt AMDTEMP 4
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2008-04-12 14:08:24 +00:00
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.Os
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.Sh NAME
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2009-03-13 16:42:24 +00:00
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.Nm amdtemp
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.Nd device driver for AMD K8, K10 and K11 on-die digital thermal sensor
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2008-04-12 14:08:24 +00:00
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.Sh SYNOPSIS
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To compile this driver into the kernel,
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place the following line in your
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kernel configuration file:
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.Bd -ragged -offset indent
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2009-03-13 16:42:24 +00:00
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.Cd "device amdtemp"
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2008-04-12 14:08:24 +00:00
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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2009-03-13 16:42:24 +00:00
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amdtemp_load="YES"
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2008-04-12 14:08:24 +00:00
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.Ed
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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 on-die digital thermal sensor present
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2009-03-13 16:42:24 +00:00
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in AMD K8, K10 and K11 processors.
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2008-04-12 14:08:24 +00:00
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.Pp
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2009-03-13 16:42:24 +00:00
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For the K8 family, the
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2008-04-12 14:08:24 +00:00
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.Nm
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2011-02-07 11:20:58 +00:00
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driver reports each core's temperature through a sysctl node in the
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2008-04-12 14:08:24 +00:00
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corresponding CPU devices's sysctl tree, named
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.Va dev.amdtemp.%d.sensor{0,1}.core{0,1} .
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The driver also creates
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2008-04-12 14:08:24 +00:00
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.Va dev.cpu.%d.temperature
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2009-03-13 16:42:24 +00:00
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displaying the maximum temperature of the two sensors
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2008-04-12 14:08:24 +00:00
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located in each CPU core.
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2009-03-13 16:42:24 +00:00
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.Pp
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For the K10 and K11 families, the driver creates
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.Va dev.cpu.%d.temperature
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with the temperature of each core.
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2008-04-12 14:08:24 +00:00
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.Sh SEE ALSO
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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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.Fx 7.1 .
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.Sh AUTHORS
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.An Rui Paulo Aq rpaulo@FreeBSD.org
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2009-03-13 16:42:24 +00:00
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.An Norikatsu Shigemura Aq nork@FreeBSD.org
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2010-05-13 12:07:55 +00:00
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.Sh BUGS
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AMD K9 is not supported because temperature reporting has been replaced
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by Maltese.
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