AIBS(4) OpenBSD Programmer's Manual AIBS(4)NAME
aibs - ASUSTeK AI Booster ACPI ATK0110 temperature, voltage, and fan
sensor
SYNOPSIS
aibs* at acpi?
DESCRIPTION
The aibs driver provides support for the voltage, temperature and fan
sensors available through the ATK0110 ACPI device on ASUSTeK
motherboards. The number of sensors of each type, as well as the
description of each sensor, varies according to the motherboard.
The driver supports an arbitrary set of sensors, provides a description
regarding what each sensor is used for, and reports whether each sensor
is within the specifications as defined by the motherboard manufacturer
through ACPI.
The aibs driver supports sensor states as follows: temperature sensors
can have a state of OK, WARN, CRIT or UNKNOWN; fan and voltage sensors
can have a state of OK or WARN only. Temperature sensors that have a
reading of 0 are marked as invalid and their state is set to UNKNOWN,
whereas all other sensors are always assumed valid. Temperature sensors
have two upper limits (WARN and CRIT), fan sensors have either only the
lower limit, or one lower and one upper limit, and voltage sensors always
have a lower and an upper limit.
Sensor values are made available through the HW_SENSORS sysctl(3)
interface, and can be monitored with the systat(1) sensors view,
sensorsd(8), or sysctl(8) hw.sensors. For example, on an Asus Stricker
Extreme motherboard:
$ sysctl hw.sensors.aibs0
hw.sensors.aibs0.temp0=31.00 degC (CPU Temperature), OK
hw.sensors.aibs0.temp1=43.00 degC (MB Temperature), OK
hw.sensors.aibs0.fan0=2490 RPM (CPU FAN Speed), OK
hw.sensors.aibs0.fan1=0 RPM (CHASSIS FAN Speed), WARNING
hw.sensors.aibs0.fan2=0 RPM (OPT1 FAN Speed), WARNING
hw.sensors.aibs0.fan3=0 RPM (OPT2 FAN Speed), WARNING
hw.sensors.aibs0.fan4=0 RPM (OPT3 FAN Speed), WARNING
hw.sensors.aibs0.fan5=0 RPM (OPT4 FAN Speed), WARNING
hw.sensors.aibs0.fan6=0 RPM (OPT5 FAN Speed), WARNING
hw.sensors.aibs0.fan7=0 RPM (PWR FAN Speed), WARNING
hw.sensors.aibs0.volt0=1.26 VDC (Vcore Voltage), OK
hw.sensors.aibs0.volt1=3.25 VDC ( +3.3 Voltage), OK
hw.sensors.aibs0.volt2=4.95 VDC ( +5.0 Voltage), OK
hw.sensors.aibs0.volt3=11.78 VDC (+12.0 Voltage), OK
hw.sensors.aibs0.volt4=1.23 VDC (1.2VHT Voltage), OK
hw.sensors.aibs0.volt5=1.50 VDC (SB CORE Voltage), OK
hw.sensors.aibs0.volt6=1.25 VDC (CPU VTT Voltage), OK
hw.sensors.aibs0.volt7=0.93 VDC (DDR2 TERM Voltage), OK
hw.sensors.aibs0.volt8=1.23 VDC (NB CORE Voltage), OK
hw.sensors.aibs0.volt9=1.87 VDC (MEMORY Voltage), OK
Generally, sensors provided by the aibs driver may also be supported by a
variety of other drivers, such as lm(4) or it(4). The precise collection
of aibs sensors is comprised of the sensors specifically utilised in the
motherboard design, which may be supported through a combination of one
or more physical hardware monitoring chips.
The aibs driver, however, provides the following advantages when compared
to the native hardware monitoring drivers:
o Sensor values from aibs are expected to be more reliable. For
example, voltage sensors in many hardware monitoring chips can only
sense voltage from 0 to 2 or 4 volts, and the excessive voltage is
removed by the resistors, which may vary with the motherboard and
with the voltage that is being sensed. In aibs, the required
resistor factors are provided by the motherboard manufacturer through
ACPI; in the native drivers, the resistor factors are encoded into
the driver based on the chip manufacturer's recommendations. In
essence, sensor values from aibs are very likely to be identical to
the readings from the Hardware Monitor screen in the BIOS.
o Sensor descriptions from aibs are more likely to match the markings
on the motherboard.
o Sensor status is supported by aibs. The status is reported based on
the acceptable range of values for each individual sensor as
suggested by the motherboard manufacturer. For example, the
threshold for the CPU temperature sensor is likely to be
significantly higher than that for the chassis temperature sensor.
o Support for newer chips in aibs. Newer chips may miss a native
driver, but should be supported through aibs regardless.
As a result, sensor readings from the actual native hardware monitoring
drivers may be ignored as appropriate.
SEE ALSOsystat(1), sysctl(3), acpi(4), intro(4), sensorsd(8), sysctl(8)HISTORY
The aibs driver first appeared in OpenBSD 4.7.
AUTHORS
The aibs driver was written by Constantine A. Murenin <cnst@openbsd.org>,
University of Waterloo.
OpenBSD 4.9 July 30, 2009 OpenBSD 4.9
