1.\" $OpenBSD: km.4,v 1.9 2013/07/16 16:05:49 schwarze Exp $ 2.\" 3.\" Copyright (c) 2008/2010 Constantine A. Murenin <cnst+dfly@bugmail.mojo.ru> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd August 2, 2020 18.Dt KM 4 19.Os 20.Sh NAME 21.Nm km 22.Nd AMD K10 temperature sensor 23.Sh SYNOPSIS 24To compile this driver into the kernel, 25place the following lines in your 26kernel configuration file: 27.Bd -ragged -offset indent 28.Cd "device pci" 29.Cd "device km" 30.Ed 31.Pp 32Alternatively, to load the driver as a 33module at boot time, place the following line in 34.Xr loader.conf 5 : 35.Bd -literal -offset indent 36km_load="YES" 37.Ed 38.Sh DESCRIPTION 39The 40.Nm 41driver provides support for the temperature sensors available in the 42AMD Family 10h, 11h, 12h, 14h, 15h and 16h processors. 43.Pp 44Each chip reports one temperature sensor. 45Multiprocessor systems have one instance of 46.Nm 47per chip. 48The highest resolution supported by the driver is 0.125 degC. 49.Pp 50Sensor values are made available through the 51.Dv HW_SENSORS 52.Xr sysctl 3 53interface, 54and can be monitored with the 55.Xr systat 1 56.Ar sensors 57display, 58.Xr sensorsd 8 59and 60.Xr sysctl 8 61.Ar hw.sensors . 62For example, with an 63.Tn AMD 64.Tn Phenom X4 659850 Black Edition 2.5GHz 66.Tn Socket AM2+ 67125W quad-core processor: 68.Bd -literal -offset indent 69%sysctl hw.sensors.km0 70hw.sensors.km0.temp0: 60.50 degC 71.Ed 72.Sh SEE ALSO 73.Xr systat 1 , 74.Xr sysctl 3 , 75.Xr amdtemp 4 , 76.Xr intro 4 , 77.Xr kate 4 , 78.Xr pci 4 , 79.Xr sensorsd 8 , 80.Xr sysctl 8 81.Rs 82.%T "BIOS and Kernel Developer's Guide for AMD Family 10h Processors" 83.%D March 26, 2008 84.%R Publication # 31116 85.%P pp. 236--237 and pp. 243--244 86.Re 87.Rs 88.%T "BIOS and Kernel Developer's Guide for AMD Family 11h Processors" 89.%D July 07, 2008 90.%R Publication # 41256 91.%P pp. 156--157 and pp. 159--160 92.Re 93.Rs 94.%T "BIOS and Kernel Developer's Guide for AMD Family 12h Processors" 95.%D October 06, 2011 96.%R Publication # 41131 Rev 3.02 97.%P pp. 303--304 and p. 316 98.Re 99.Rs 100.%T "BIOS and Kernel Developer's Guide for AMD Family 14h Models 00h-04h Processors" 101.%D May 02, 2011 102.%R Publication # 43170 103.%P pp. 277--278 and pp. 280--282 104.Re 105.Rs 106.%T "BIOS and Kernel Developer's Guide for AMD Family 15h Models 00h-0Fh Processors" 107.%D January 23, 2013 108.%R Publication # 42301 Rev 3.14 109.%P pp. 374--375 and pp. 293--294 110.Re 111.Rs 112.%T "BIOS and Kernel Developer's Guide for AMD Family 15h Models 10h-1Fh Processors" 113.%D June 04, 2013 114.%R Publication # 42300 Rev 3.10 115.%P p. 419 and pp. 432--433 116.Re 117.Rs 118.%T "BIOS and Kernel Developer's Guide for AMD Family 15h Models 30h-3Fh Processors" 119.%D June 17, 2014 120.%R Publication # 49125 Rev 3.03 121.%P p. 440 and pp. 457--458 122.Re 123.Rs 124.%T "Preliminary BIOS and Kernel Developer's Guide for AMD Family 16h Models 00h-0Fh Processors" 125.%D May 30, 2013 126.%R Publication # 48751 Rev 3.00 127.%P p. 400 and pp. 418--419 128.Re 129.Sh HISTORY 130The 131.Nm 132driver first appeared in 133.Ox 4.4 134and 135.Dx 2.5 . 136.Sh AUTHORS 137.An -nosplit 138The 139.Nm 140driver was written for 141.Ox 142and 143.Dx 144by 145.An Constantine A. Murenin Aq Lk http://cnst.su/ , 146Raouf Boutaba Research Group, 147David R. Cheriton School of Computer Science, 148University of Waterloo. 149