208 lines
5.4 KiB
Groff
208 lines
5.4 KiB
Groff
.\" $FreeBSD$
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.\" $NetBSD: aibs.4,v 1.2 2010/02/09 05:37:25 cnst Exp $
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.\" $OpenBSD: aibs.4,v 1.4 2009/07/30 06:30:45 jmc Exp $
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.\"
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.\" Copyright (c) 2009/2010 Constantine A. Murenin <cnst++@FreeBSD.org>
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd April 4, 2010
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.Dt AIBS 4
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.Os
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.Sh NAME
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.Nm aibs
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.Nd "ASUSTeK AI Booster ACPI ATK0110 voltage, temperature and fan sensor"
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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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.Cd "device aibs"
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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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aibs_load="YES"
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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 voltage, temperature and fan sensors
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available through the
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.Tn ATK0110
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.Tn ASOC
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.Tn ACPI
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device
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on
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.Tn ASUSTeK
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motherboards.
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The number of sensors of each type,
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as well as the description of each sensor,
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varies according to the motherboard.
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.Pp
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The driver supports an arbitrary set of sensors,
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provides descriptions regarding what each sensor is used for,
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and reports the current values as well as
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the supposed range specifications of each sensor's input
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as defined by the motherboard manufacturer through
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.Tn ACPI .
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.Pp
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The range specifications are as follows:
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.Bl -bullet
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.It
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Voltage sensors have a lower and an upper range specification.
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.It
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Temperature sensors have two upper specifications.
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.It
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Fan sensors may either have only the lower specification,
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or, depending on the
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.Tn DSDT ,
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one lower and one upper specification.
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.El
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.Pp
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Sensor readings and the range specifications are made available through the
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.Xr sysctl 3
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interface,
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and can be monitored with
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.Xr sysctl 8 .
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For example, on an ASUS V3-P5G965 barebone:
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.Bd -literal -offset indent
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> sysctl dev.aibs.0.{volt,temp,fan}
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dev.aibs.0.volt.0: 1192 850 1600
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dev.aibs.0.volt.1: 3312 2970 3630
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dev.aibs.0.volt.2: 5017 4500 5500
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dev.aibs.0.volt.3: 12302 10200 13800
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dev.aibs.0.temp.0: 28.0C 80.0C 95.0C
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dev.aibs.0.temp.1: 55.0C 60.0C 95.0C
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dev.aibs.0.fan.0: 878 600 7200
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dev.aibs.0.fan.1: 0 700 7200
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.Pp
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> sysctl -d dev.aibs.0.{volt,temp,fan}
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dev.aibs.0.volt:
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dev.aibs.0.volt.0: Vcore Voltage
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dev.aibs.0.volt.1: +3.3 Voltage
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dev.aibs.0.volt.2: +5 Voltage
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dev.aibs.0.volt.3: +12 Voltage
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dev.aibs.0.temp:
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dev.aibs.0.temp.0: CPU Temperature
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dev.aibs.0.temp.1: MB Temperature
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dev.aibs.0.fan:
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dev.aibs.0.fan.0: CPU FAN Speed
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dev.aibs.0.fan.1: CHASSIS FAN Speed
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.Ed
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.Pp
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Generally, sensors provided by the
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.Nm
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driver may also be supported by certain other drivers or utilities
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that access the
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.Tn ISA /
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.Tn LPC
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or
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.Tn I2C /
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.Tn SMBus
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devices directly.
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The precise collection of
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.Nm
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sensors is comprised of the sensors
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specifically utilised in the motherboard
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design, which may be supported through
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a combination of one or more physical hardware monitoring chips.
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.Pp
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The
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.Nm
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driver, however, provides the following advantages
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when compared to the native hardware monitoring drivers or other utilities:
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.Bl -bullet
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.It
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Sensor values from
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.Nm
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are expected to be more reliable.
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For example, voltage sensors in many hardware monitoring chips
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can only sense voltage from 0 to 2 or 4 volts, and the excessive
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voltage is removed by the resistors, which may vary with the motherboard
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and with the voltage that is being sensed.
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In
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.Nm ,
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the required resistor factors are provided by
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the motherboard manufacturer through
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.Tn ACPI ;
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in the native drivers, the resistor factors
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are encoded into the driver based on the chip manufacturer's recommendations.
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In essence, sensor values from
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.Nm
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are very likely to be identical to the readings from the
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Hardware Monitor screen in the BIOS.
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.It
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Sensor descriptions from
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.Nm
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are more likely to match the markings on the motherboard.
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.It
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Sensor range specifications are supported by
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.Nm .
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The range specification is reported
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for each individual sensor as suggested by the motherboard manufacturer.
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For example, the threshold for the CPU temperature sensor is likely
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to be significantly higher than that for the chassis temperature sensor.
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.It
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Support for newer chips in
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.Nm .
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Newer chips may miss a native driver,
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but should be supported through
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.Nm
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regardless.
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.El
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.Sh SEE ALSO
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.Xr sysctl 3 ,
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.Xr acpi 4 ,
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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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.Ox 4.7 ,
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.Dx 2.5 ,
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.Nx 6.0
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and
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.Fx 9.0 .
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.Pp
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An earlier version of the driver,
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.Nm acpi_aiboost ,
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first appeared in
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.Fx 7.0
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and
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.Nx 5.0 .
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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 for
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.Ox ,
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.Dx ,
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.Nx
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and
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.Fx
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by
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.An Constantine A. Murenin Aq Mt cnst@FreeBSD.org ,
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Raouf Boutaba Research Group,
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David R. Cheriton School of Computer Science,
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University of Waterloo.
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.Pp
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An earlier version of the driver, named
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.Nm acpi_aiboost ,
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was written for
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.Fx
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by
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.An Takanori Watanabe .
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