Add coretemp(4). A new driver for Intel Core's on-die thermal sensor,
available on Intel Core or newer CPUs. Ported from FreeBSD. Tested by rmind on i386 and joerg on amd64. Enabled with "options INTEL_CORETEMP".
This commit is contained in:
xtraeme
parent
79606bd6fa
commit
e3b08fdabe
@ -1,4 +1,4 @@
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LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.938 $>
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LIST OF CHANGES FROM LAST RELEASE: <$Revision: 1.939 $>
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[Note: This file does not mention every change made to the NetBSD source tree.
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@ -226,3 +226,6 @@ Changes from NetBSD 4.0 to NetBSD 5.0:
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msk(4): Add support for Marvell 88CO55 gigabit ethernet, which
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is used by newer iMacs [manu 20071022]
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shark: Removed pccons(4), obsoleted by wscons(4). [jmmv 20071028]
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coretemp(4): Driver for Intel Core's on-die thermal sensor,
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available on Core or newer CPUs. Ported from FreeBSD.
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[xtraeme 20071029]
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.445 2007/10/25 17:32:23 christos Exp $
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# $NetBSD: Makefile,v 1.446 2007/10/29 00:42:28 xtraeme Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/18/93
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MAN= aac.4 ac97.4 acardide.4 aceride.4 acphy.4 adbbt.4 adbkbd.4 adbms.4 \
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@ -14,7 +14,7 @@ MAN= aac.4 ac97.4 acardide.4 aceride.4 acphy.4 adbbt.4 adbkbd.4 adbms.4 \
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btuart.4 cac.4 cardbus.4 carp.4 ccd.4 cd.4 \
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cec.4 cgd.4 cfb.4 ch.4 chipsfb.4 ciphy.4 ciss.4 clcs.4 clct.4 clnp.4 \
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clockctl.4 cltp.4 cmdide.4 cmpci.4 cms.4 cnw.4 \
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com.4 crypto.4 cs80bus.4 cuda.4 cypide.4 geodeide.4 \
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com.4 coretemp.4 crypto.4 cs80bus.4 cuda.4 cypide.4 geodeide.4 \
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ddb.4 ddc.4 de.4 dge.4 dk.4 dmoverio.4 \
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dmphy.4 dpt.4 dpti.4 drm.4 drum.4 eap.4 ebus.4 edc.4 \
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elmc.4 emuxki.4 en.4 envsys.4 ep.4 esh.4 esis.4 \
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81
share/man/man4/coretemp.4
Normal file
81
share/man/man4/coretemp.4
Normal file
@ -0,0 +1,81 @@
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.\" $NetBSD: coretemp.4,v 1.1 2007/10/29 00:42:28 xtraeme Exp $
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.\"-
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.\" Copyright (c) 2007 Juan Romero Pardines.
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.\" Copyright (c) 2007 Dag-Erling Coïdan Smørgrav
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD: src/share/man/man4/coretemp.4,v 1.4 2007/10/15 20:00:19 netchild Exp $
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.\"
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.Dd October 29, 2007
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.Dt CORETEMP 4
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.Os
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.Sh NAME
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.Nm coretemp
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.Nd Intel Core on-die digital thermal sensor
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.Sh SYNOPSIS
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.Cd "options INTEL_CORETEMP"
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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 on-die digital thermal sensor present
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on Intel Core and newer CPUs.
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.Pp
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The
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.Nm
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driver reports each core's temperature through the
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.Xr envsys 4
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API. The driver has only 1 temperature sensor:
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.Bl -column "Sensor" "Units" "Typical" -offset indent
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.It Sy "Sensor" Ta Sy "Units" Ta Sy "Typical Use"
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.It Li "sensor0" Ta "uK" Ta "cpuN temperature"
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.El
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.Sh EVENTS
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The
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.Nm
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driver is able to send a
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.Em critical
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event to the
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.Fa /etc/powerd/scripts/sensor_temperature
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.Xr powerd 8
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script (if running) when the temperature has reached a critical state.
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.Sh SEE ALSO
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.Xr envstat 4 ,
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.Xr powerd 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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.Fx 7.0 .
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And then was ported to
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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 by
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.An Rui Paulo Aq rpaulo@FreeBSD.org
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as part of a Google Summer of Code project. It was adapted to
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.Nx
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by
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.An Juan Romero Pardines .
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@ -1,4 +1,4 @@
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/* $NetBSD: identcpu.c,v 1.26 2007/10/17 19:53:00 garbled Exp $ */
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/* $NetBSD: identcpu.c,v 1.27 2007/10/29 00:42:29 xtraeme Exp $ */
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/*
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* Copyright (c) 2003 Wasabi Systems, Inc.
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@ -36,9 +36,10 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.26 2007/10/17 19:53:00 garbled Exp $");
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__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.27 2007/10/29 00:42:29 xtraeme Exp $");
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#include "opt_enhanced_speedstep.h"
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#include "opt_intel_coretemp.h"
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#include "opt_intel_odcm.h"
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#include "opt_powernow_k8.h"
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@ -178,6 +179,10 @@ identifycpu(struct cpu_info *ci)
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}
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#endif
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#ifdef INTEL_CORETEMP
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if (vendor == CPUVENDOR_INTEL)
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coretemp_register(ci);
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#endif
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}
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void
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@ -1,4 +1,4 @@
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/* $NetBSD: identcpu.c,v 1.76 2007/10/17 19:54:45 garbled Exp $ */
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/* $NetBSD: identcpu.c,v 1.77 2007/10/29 00:42:28 xtraeme Exp $ */
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/*-
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* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
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@ -37,11 +37,12 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.76 2007/10/17 19:54:45 garbled Exp $");
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__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.77 2007/10/29 00:42:28 xtraeme Exp $");
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#include "opt_cputype.h"
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#include "opt_enhanced_speedstep.h"
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#include "opt_intel_odcm.h"
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#include "opt_intel_coretemp.h"
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#include "opt_powernow_k7.h"
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#include "opt_powernow_k8.h"
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@ -1629,6 +1630,11 @@ identifycpu(struct cpu_info *ci)
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}
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#endif /* ENHANCED_SPEEDSTEP */
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#ifdef INTEL_CORETEMP
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if (cpu_vendor == CPUVENDOR_INTEL)
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coretemp_register(ci);
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#endif
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#if defined(POWERNOW_K7) || defined(POWERNOW_K8)
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if (cpu_vendor == CPUVENDOR_AMD && powernow_probe(ci)) {
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switch (CPUID2FAMILY(ci->ci_signature)) {
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@ -1,4 +1,4 @@
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# $NetBSD: files.x86,v 1.32 2007/10/26 21:49:52 xtraeme Exp $
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# $NetBSD: files.x86,v 1.33 2007/10/29 00:42:29 xtraeme Exp $
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# options for MP configuration through the MP spec
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defflag opt_mpbios.h MPBIOS MPVERBOSE MPDEBUG MPBIOS_SCANPCI
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@ -14,6 +14,9 @@ defflag opt_pcifixup.h PCI_ADDR_FIXUP PCI_BUS_FIXUP
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defflag ENHANCED_SPEEDSTEP
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defflag opt_est.h EST_FREQ_USERWRITE
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# Intel On Die Temperature sensor
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defflag opt_intel_coretemp.h INTEL_CORETEMP: sysmon_envsys
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# Pentium 4+ Thermal Monitor ODCM (aka On Demand Clock Modulation)
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defflag opt_intel_odcm.h INTEL_ONDEMAND_CLOCKMOD
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@ -86,6 +89,9 @@ file arch/x86/x86/iclockmod.c intel_ondemand_clockmod
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file arch/x86/x86/est.c enhanced_speedstep
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file arch/x86/x86/intel_busclock.c enhanced_speedstep
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# Intel On-Die Temperature sensor
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file arch/x86/x86/coretemp.c intel_coretemp
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# IPMI device
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device ipmi: sysmon_envsys, sysmon_wdog
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attach ipmi at ipmibus
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@ -1,4 +1,4 @@
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/* $NetBSD: cpuvar.h,v 1.15 2007/10/17 19:58:14 garbled Exp $ */
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/* $NetBSD: cpuvar.h,v 1.16 2007/10/29 00:42:29 xtraeme Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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@ -96,6 +96,7 @@ struct cpu_attach_args {
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#include "opt_multiprocessor.h"
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#ifndef XEN
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#include "opt_enhanced_speedstep.h"
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#include "opt_intel_coretemp.h"
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#include "opt_intel_odcm.h"
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#endif
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@ -112,6 +113,10 @@ void identifycpu(struct cpu_info *);
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void cpu_init(struct cpu_info *);
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void cpu_init_first(void);
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#ifdef INTEL_CORETEMP
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void coretemp_register(struct cpu_info *);
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#endif
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#ifdef INTEL_ONDEMAND_CLOCKMOD
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void clockmod_init(void);
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#endif
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@ -1,4 +1,4 @@
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/* $NetBSD: specialreg.h,v 1.20 2007/10/17 19:58:15 garbled Exp $ */
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/* $NetBSD: specialreg.h,v 1.21 2007/10/29 00:42:29 xtraeme Exp $ */
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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@ -220,6 +220,7 @@
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#define MSR_PERFCTR0 0x0c1
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#define MSR_PERFCTR1 0x0c2
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#define MSR_FSB_FREQ 0x0cd /* Core Duo/Solo only */
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#define MSR_IA32_EXT_CONFIG 0x0ee /* Undocumented. Core Solo/Duo only */
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#define MSR_MTRRcap 0x0fe
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#define MSR_BBL_CR_ADDR 0x116 /* PII+ only */
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#define MSR_BBL_CR_DECC 0x118 /* PII+ only */
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222
sys/arch/x86/x86/coretemp.c
Normal file
222
sys/arch/x86/x86/coretemp.c
Normal file
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/* $NetBSD: coretemp.c,v 1.1 2007/10/29 00:42:29 xtraeme Exp $ */
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/*-
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* Copyright (c) 2007 Juan Romero Pardines.
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* Copyright (c) 2007 Rui Paulo <rpaulo@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD: src/sys/dev/coretemp/coretemp.c,v 1.4 2007/10/15 20:00:21 netchild Exp $
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*
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*/
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/*
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* Device driver for Intel's On Die thermal sensor via MSR.
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* First introduced in Intel's Core line of processors.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: coretemp.c,v 1.1 2007/10/29 00:42:29 xtraeme Exp $");
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#include <sys/param.h>
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#include <sys/kmem.h>
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#include <sys/xcall.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <machine/cpu.h>
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#include <machine/cpuvar.h>
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#include <machine/specialreg.h>
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struct coretemp_softc {
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struct cpu_info *sc_ci;
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struct sysmon_envsys sc_sme;
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envsys_data_t sc_sensor[1];
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char sc_dvname[32];
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int sc_tjmax;
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};
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static int coretemp_refresh(struct sysmon_envsys *, envsys_data_t *);
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static void coretemp_refresh_xcall(void *, void *);
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void
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coretemp_register(struct cpu_info *ci)
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{
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struct coretemp_softc *sc;
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uint32_t regs[4];
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uint64_t msr;
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int cpumodel, cpumask;
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/*
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* CPUID 0x06 returns 1 if the processor has on-die thermal
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* sensors. EBX[0:3] contains the number of sensors.
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*/
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x86_cpuid(0x06, regs);
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if ((regs[0] & 0x1) != 1)
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return;
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sc = kmem_zalloc(sizeof(*sc), KM_NOSLEEP);
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if (!sc)
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return;
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(void)snprintf(sc->sc_dvname, sizeof(sc->sc_dvname), "coretemp%d",
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(int)ci->ci_cpuid);
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cpumodel = CPUID2MODEL(ci->ci_cpuid);
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/* extended model */
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cpumodel += CPUID2EXTMODEL(ci->ci_cpuid);
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cpumask = ci->ci_cpuid & 15;
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/*
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* Check for errata AE18.
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* "Processor Digital Thermal Sensor (DTS) Readout stops
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* updating upon returning from C3/C4 state."
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*
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* Adapted from the Linux coretemp driver.
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*/
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if (cpumodel == 0xe && cpumask < 0xc) {
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msr = rdmsr(MSR_BIOS_SIGN);
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msr = msr >> 32;
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if (msr < 0x39) {
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aprint_debug("%s: not supported (Intel errata AE18), "
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"try updating your BIOS\n", sc->sc_dvname);
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kmem_free(sc, sizeof(*sc));
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return;
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}
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}
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/*
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* On some Core 2 CPUs, there's an undocumented MSR that
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* can tell us if Tj(max) is 100 or 85.
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*
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* The if-clause for CPUs having the MSR_IA32_EXT_CONFIG was adapted
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* from the Linux coretemp driver.
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*/
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sc->sc_tjmax = 100;
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if ((cpumodel == 0xf && cpumask >= 2) || cpumodel == 0xe) {
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msr = rdmsr(MSR_IA32_EXT_CONFIG);
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if (msr & (1 << 30))
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sc->sc_tjmax = 85;
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}
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sc->sc_ci = ci;
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/*
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* Only a temperature sensor and monitor for a critical state.
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*/
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sc->sc_sensor[0].sensor = 0;
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sc->sc_sensor[0].units = ENVSYS_STEMP;
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sc->sc_sensor[0].state = ENVSYS_SVALID;
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sc->sc_sensor[0].flags = ENVSYS_FMONCRITICAL;
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sc->sc_sensor[0].monitor = true;
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(void)snprintf(sc->sc_sensor[0].desc, sizeof(sc->sc_sensor[0].desc),
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"cpu%d temperature", (int)ci->ci_cpuid);
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/*
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* Hook into the system monitor.
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*/
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sc->sc_sme.sme_name = sc->sc_dvname;
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sc->sc_sme.sme_sensor_data = sc->sc_sensor;
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sc->sc_sme.sme_cookie = sc;
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sc->sc_sme.sme_gtredata = coretemp_refresh;
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sc->sc_sme.sme_nsensors = 1;
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if (sysmon_envsys_register(&sc->sc_sme)) {
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aprint_error("%s: unable to register with sysmon\n",
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sc->sc_dvname);
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kmem_free(sc, sizeof(*sc));
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}
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}
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static int
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coretemp_refresh(struct sysmon_envsys *sme, envsys_data_t *edata)
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{
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struct coretemp_softc *sc = sme->sme_cookie;
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/*
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* No need to cross-call if we are running on the same CPU.
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*/
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if (curcpu() != sc->sc_ci)
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(void)xc_unicast(0, coretemp_refresh_xcall,
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sc, edata, sc->sc_ci);
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else
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coretemp_refresh_xcall(sc, edata);
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return 0;
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}
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static void
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coretemp_refresh_xcall(void *arg0, void *arg1)
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{
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struct coretemp_softc *sc = (struct coretemp_softc *)arg0;
|
||||
envsys_data_t *edata = (envsys_data_t *)arg1;
|
||||
uint64_t msr;
|
||||
|
||||
/*
|
||||
* The digital temperature reading is located at bit 16
|
||||
* of MSR_THERM_STATUS.
|
||||
*
|
||||
* There is a bit on that MSR that indicates whether the
|
||||
* temperature is valid or not.
|
||||
*
|
||||
* The temperature is computed by subtracting the temperature
|
||||
* reading by Tj(max).
|
||||
*/
|
||||
msr = rdmsr(MSR_THERM_STATUS);
|
||||
|
||||
/*
|
||||
* Check for Thermal Status and Thermal Status Log.
|
||||
*/
|
||||
if ((msr & 0x3) == 0x3)
|
||||
aprint_debug("%s: PROCHOT asserted\n", sc->sc_dvname);
|
||||
|
||||
/*
|
||||
* Bit 31 contains "Reading valid"
|
||||
*/
|
||||
if (((msr >> 31) & 0x1) == 1) {
|
||||
/*
|
||||
* Starting on bit 16 and ending on bit 22.
|
||||
*/
|
||||
edata->value_cur = sc->sc_tjmax - ((msr >> 16) & 0x7f);
|
||||
/*
|
||||
* Convert to mK.
|
||||
*/
|
||||
edata->value_cur *= 1000000;
|
||||
edata->value_cur += 273150000;
|
||||
edata->state = ENVSYS_SVALID;
|
||||
} else
|
||||
edata->state = ENVSYS_SINVALID;
|
||||
|
||||
/*
|
||||
* Check for Critical Temperature Status and Critical
|
||||
* Temperature Log.
|
||||
* It doesn't really matter if the current temperature is
|
||||
* invalid because the "Critical Temperature Log" bit will
|
||||
* tell us if the Critical Temperature has been reached in
|
||||
* past. It's not directly related to the current temperature.
|
||||
*
|
||||
* If we reach a critical level, send a critical event to
|
||||
* powerd(8) (if running).
|
||||
*/
|
||||
if (((msr >> 4) & 0x3) == 0x3)
|
||||
edata->state = ENVSYS_SCRITICAL;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user