DragonFly On-Line Manual Pages


KM(4)		      DragonFly Kernel Interfaces Manual		 KM(4)

NAME

km -- AMD K10 temperature sensor

SYNOPSIS

To compile this driver into the kernel, place the following lines in your kernel configuration file: device pci device km Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): km_load="YES"

DESCRIPTION

The km driver provides support for the temperature sensors available in the AMD Family 10h, 11h, 12h, 14h, 15h and 16h processors. Each chip reports one temperature sensor. Multiprocessor systems have one instance of km per chip. The highest resolution supported by the driver is 0.125 degC. Sensor values are made available through the HW_SENSORS sysctl(3) inter- face, and can be monitored with the systat(1) sensors display, sensorsd(8) and sysctl(8) hw.sensors. For example, with an AMD Phenom X4 9850 Black Edition 2.5GHz Socket AM2+ 125W quad-core processor: %sysctl hw.sensors.km0 hw.sensors.km0.temp0: 60.50 degC

SEE ALSO

systat(1), sysctl(3), intro(4), kate(4), pci(4), sensorsd(8), sysctl(8) BIOS and Kernel Developer's Guide for AMD Family 10h Processors, Publication # 31116, pp. 236--237 and pp. 243--244, March 26, 2008. BIOS and Kernel Developer's Guide for AMD Family 11h Processors, Publication # 41256, pp. 156--157 and pp. 159--160, July 07, 2008. BIOS and Kernel Developer's Guide for AMD Family 12h Processors, Publication # 41131 Rev 3.02, pp. 303--304 and p. 316, October 06, 2011. BIOS and Kernel Developer's Guide for AMD Family 14h Models 00h-04h Processors, Publication # 43170, pp. 277--278 and pp. 280--282, May 02, 2011. BIOS and Kernel Developer's Guide for AMD Family 15h Models 00h-0Fh Procesors, Publication # 42301 Rev 3.14, pp. 374--375 and pp. 293--294, January 23, 2013. BIOS and Kernel Developer's Guide for AMD Family 15h Models 10h-1Fh Procesors, Publication # 42300 Rev 3.10, p. 419 and pp. 432--433, June 04, 2013. BIOS and Kernel Developer's Guide for AMD Family 15h Models 30h-3Fh Procesors, Publication # 49125 Rev 3.03, p. 440 and pp. 457--458, June 17, 2014. Preliminary BIOS and Kernel Developer's Guide for AMD Family 16h Models 00h-0Fh Procesors, Publication # 48751 Rev 3.00, p. 400 and pp. 418--419, May 30, 2013.

HISTORY

The km driver first appeared in OpenBSD 4.4 and DragonFly 2.5.

AUTHORS

The km driver was written for OpenBSD and DragonFly by Constantine A. Murenin <http://cnst.su/>, Raouf Boutaba Research Group, David R. Cheri- ton School of Computer Science, University of Waterloo. DragonFly 3.9 July 12, 2014 DragonFly 3.9