1*bbf21555SRichard Lowe.\" 2*bbf21555SRichard Lowe.\" This file and its contents are supplied under the terms of the 3*bbf21555SRichard Lowe.\" Common Development and Distribution License ("CDDL"), version 1.0. 4*bbf21555SRichard Lowe.\" You may only use this file in accordance with the terms of version 5*bbf21555SRichard Lowe.\" 1.0 of the CDDL. 6*bbf21555SRichard Lowe.\" 7*bbf21555SRichard Lowe.\" A full copy of the text of the CDDL should have accompanied this 8*bbf21555SRichard Lowe.\" source. A copy of the CDDL is also available via the Internet at 9*bbf21555SRichard Lowe.\" http://www.illumos.org/license/CDDL. 10*bbf21555SRichard Lowe.\" 11*bbf21555SRichard Lowe.\" 12*bbf21555SRichard Lowe.\" Copyright 2019, Joyent, Inc. 13*bbf21555SRichard Lowe.\" Copyright 2020 Oxide Computer Company 14*bbf21555SRichard Lowe.\" 15*bbf21555SRichard Lowe.Dd September 1, 2020 16*bbf21555SRichard Lowe.Dt SMNTEMP 4D 17*bbf21555SRichard Lowe.Os 18*bbf21555SRichard Lowe.Sh NAME 19*bbf21555SRichard Lowe.Nm smntemp 20*bbf21555SRichard Lowe.Nd AMD SMN Temperature Sensor Driver 21*bbf21555SRichard Lowe.Sh SYNOPSIS 22*bbf21555SRichard Lowe.Pa /dev/sensors/temperature/cpu/* 23*bbf21555SRichard Lowe.Sh DESCRIPTION 24*bbf21555SRichard LoweThe 25*bbf21555SRichard Lowe.Nm 26*bbf21555SRichard Lowedriver provides the system access to the temperature sensor found in the 27*bbf21555SRichard LoweAMD System Management Network 28*bbf21555SRichard Lowe.Pq SMN 29*bbf21555SRichard Loweon AMD Family 17h 30*bbf21555SRichard Lowe.Pq Zen, Zen+, and Zen 2 31*bbf21555SRichard Loweprocessors. 32*bbf21555SRichard Lowe.Pp 33*bbf21555SRichard LoweFrom this, the driver exposes temperature sensors. 34*bbf21555SRichard LoweOn Family 17h systems, temperature sensors exist for each Zeppelin die, 35*bbf21555SRichard Loweof which there may be multiple in a single package. 36*bbf21555SRichard LoweThis means that each sensor covers more than one core. 37*bbf21555SRichard Lowe.Pp 38*bbf21555SRichard LoweTemperature information is available to the system via the fault 39*bbf21555SRichard Lowemanagement architecture 40*bbf21555SRichard Lowe.Pq FMA . 41*bbf21555SRichard LoweThe file system location and programming interface to the 42*bbf21555SRichard Lowe.Nm 43*bbf21555SRichard Lowedriver are considered 44*bbf21555SRichard Lowe.Sy Volatile , 45*bbf21555SRichard Lowesubject to change without notice, and should not be used directly. 46*bbf21555SRichard LoweRaw temperature information can be dumped through the FMA developer 47*bbf21555SRichard Loweutility fmtopo. 48*bbf21555SRichard Lowe.Sh SEE ALSO 49*bbf21555SRichard Lowe.Xr amdnbtemp 4D , 50*bbf21555SRichard Lowe.Xr amdzen 4D , 51*bbf21555SRichard Lowe.Xr fmadm 8 52*bbf21555SRichard Lowe.Rs 53*bbf21555SRichard Lowe.%A AMD 54*bbf21555SRichard Lowe.%B Open-Source Register Reference For AMD Family 17h Processors Models 00h-2Fh 55*bbf21555SRichard Lowe.%D July, 2018 56*bbf21555SRichard Lowe.Re 57