Pawel Worach wrote: > Nate Lawson wrote: > >> Attached is a patch that I'd like to get tested. After applying it, >> rebuild and load the cpufreq.ko module. Be sure you do _not_ have >> "options CPU_ENABLE_TCC" in your kernel config or the new driver will >> conflict with the old. > > > Hi Nate, > > This is what I get on a TP T41, do the cpufreq results below look right? > Also if I loaded both modules all I got for dev.cpu.0.freq was -1 or > 1700 and no levels. > > CPU: Intel(R) Pentium(R) M processor 1700MHz (1698.56-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0x695 Stepping = 5 > Features=0xa7e9f9bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,TM,PBE> Apologies. I found 2 bugs, one was not calling cpufreq_register() and the other was that the code to detect acpi_perf (in ichss and est) was incorrect. I've committed fixes for that and have updated the patch. Please ues this version and test again. Thanks, -- Nate Index: conf/files.i386 =================================================================== RCS file: /home/ncvs/src/sys/conf/files.i386,v retrieving revision 1.516 diff -u -r1.516 files.i386 --- conf/files.i386 9 Feb 2005 20:03:39 -0000 1.516 +++ conf/files.i386 16 Feb 2005 16:05:02 -0000 _at__at_ -218,6 +218,8 _at__at_ i386/bios/smapi_bios.S optional smapi i386/bios/smbios.c optional smbios i386/bios/vpd.c optional vpd +i386/cpufreq/est.c optional cpufreq +i386/cpufreq/p4tcc.c optional cpufreq #i386/i386/apic_vector.s optional apic i386/i386/atomic.c standard \ compile-with "${CC} -c ${CFLAGS} ${DEFINED_PROF:S/^$/-fomit-frame-pointer/} ${.IMPSRC}" Index: modules/cpufreq/Makefile =================================================================== RCS file: /home/ncvs/src/sys/modules/cpufreq/Makefile,v retrieving revision 1.1 diff -u -r1.1 Makefile --- modules/cpufreq/Makefile 4 Feb 2005 05:49:36 -0000 1.1 +++ modules/cpufreq/Makefile 17 Feb 2005 01:03:30 -0000 _at__at_ -1,10 +1,15 _at__at_ # $FreeBSD$ -.PATH: ${.CURDIR}/../../dev/cpufreq +.PATH: ${.CURDIR}/../../dev/cpufreq \ + ${.CURDIR}/../../${MACHINE_ARCH}/cpufreq KMOD= cpufreq WARNS?= 2 SRCS= ichss.c SRCS+= bus_if.h cpufreq_if.h device_if.h pci_if.h +.if ${MACHINE} == "i386" +SRCS+= est.c p4tcc.c +.endif + .include <bsd.kmod.mk> Index: i386/cpufreq/est.c =================================================================== RCS file: i386/cpufreq/est.c diff -N i386/cpufreq/est.c --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ i386/cpufreq/est.c 18 Feb 2005 00:09:59 -0000 _at__at_ -0,0 +1,788 _at__at_ +/*- + * Copyright (c) 2004 Colin Percival + * Copyright (c) 2005 Nate Lawson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted providing that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/cpu.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/smp.h> +#include <sys/systm.h> + +#include "cpufreq_if.h" +#include <machine/md_var.h> + +/* Status/control registers (from the IA-32 System Programming Guide). */ +#define MSR_PERF_STATUS 0x198 +#define MSR_PERF_CTL 0x199 + +/* Register and bit for enabling SpeedStep. */ +#define MSR_MISC_ENABLE 0x1a0 +#define MSR_SS_ENABLE (1<<16) + +/* Frequency and MSR control values. */ +typedef struct { + uint16_t freq; + uint16_t volts; + uint16_t id16; +} freq_info; + +/* Identifying characteristics of a processor and supported frequencies. */ +typedef struct { + const char *vendor; + uint32_t id32; + uint32_t bus_clk; + const freq_info *freqtab; +} cpu_info; + +struct est_softc { + device_t dev; + const freq_info *freq_list; +}; + +/* Convert MHz and mV into IDs for passing to the MSR. */ +#define ID16(MHz, mV, bus_clk) \ + (((MHz / bus_clk) << 8) | ((mV ? mV - 700 : 0) >> 4)) +#define ID32(MHz_hi, mV_hi, MHz_lo, mV_lo, bus_clk) \ + ((ID16(MHz_lo, mV_lo, bus_clk) << 16) | (ID16(MHz_hi, mV_hi, bus_clk))) + +/* Format for storing IDs in our table. */ +#define FREQ_INFO(MHz, mV, bus_clk) \ + { MHz, mV, ID16(MHz, mV, bus_clk) } +#define INTEL(tab, zhi, vhi, zlo, vlo, bus_clk) \ + { GenuineIntel, ID32(zhi, vhi, zlo, vlo, bus_clk), bus_clk, tab } + +const char GenuineIntel[] = "GenuineIntel"; + +/* Default bus clock value for Centrino processors. */ +#define INTEL_BUS_CLK 100 + +/* XXX Update this if new CPUs have more settings. */ +#define EST_MAX_SETTINGS 10 +CTASSERT(EST_MAX_SETTINGS <= MAX_SETTINGS); + +/* Estimate in microseconds of latency for performing a transition. */ +#define EST_TRANS_LAT 10 + +/* + * Frequency (MHz) and voltage (mV) settings. Data from the + * Intel Pentium M Processor Datasheet (Order Number 252612), Table 5. + * + * XXX New Dothan processors have multiple VID# with different + * settings for each VID#. Since we can't uniquely identify this info + * without undisclosed methods from Intel, we can't support newer + * processors with this table method. If ACPI Px states are supported, + * we can get info from them. + */ +const freq_info PM17_130[] = { + /* 130nm 1.70GHz Pentium M */ + FREQ_INFO(1700, 1484, INTEL_BUS_CLK), + FREQ_INFO(1400, 1308, INTEL_BUS_CLK), + FREQ_INFO(1200, 1228, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1004, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM16_130[] = { + /* 130nm 1.60GHz Pentium M */ + FREQ_INFO(1600, 1484, INTEL_BUS_CLK), + FREQ_INFO(1400, 1420, INTEL_BUS_CLK), + FREQ_INFO(1200, 1276, INTEL_BUS_CLK), + FREQ_INFO(1000, 1164, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM15_130[] = { + /* 130nm 1.50GHz Pentium M */ + FREQ_INFO(1500, 1484, INTEL_BUS_CLK), + FREQ_INFO(1400, 1452, INTEL_BUS_CLK), + FREQ_INFO(1200, 1356, INTEL_BUS_CLK), + FREQ_INFO(1000, 1228, INTEL_BUS_CLK), + FREQ_INFO( 800, 1116, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM14_130[] = { + /* 130nm 1.40GHz Pentium M */ + FREQ_INFO(1400, 1484, INTEL_BUS_CLK), + FREQ_INFO(1200, 1436, INTEL_BUS_CLK), + FREQ_INFO(1000, 1308, INTEL_BUS_CLK), + FREQ_INFO( 800, 1180, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM13_130[] = { + /* 130nm 1.30GHz Pentium M */ + FREQ_INFO(1300, 1388, INTEL_BUS_CLK), + FREQ_INFO(1200, 1356, INTEL_BUS_CLK), + FREQ_INFO(1000, 1292, INTEL_BUS_CLK), + FREQ_INFO( 800, 1260, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM13_LV_130[] = { + /* 130nm 1.30GHz Low Voltage Pentium M */ + FREQ_INFO(1300, 1180, INTEL_BUS_CLK), + FREQ_INFO(1200, 1164, INTEL_BUS_CLK), + FREQ_INFO(1100, 1100, INTEL_BUS_CLK), + FREQ_INFO(1000, 1020, INTEL_BUS_CLK), + FREQ_INFO( 900, 1004, INTEL_BUS_CLK), + FREQ_INFO( 800, 988, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM12_LV_130[] = { + /* 130 nm 1.20GHz Low Voltage Pentium M */ + FREQ_INFO(1200, 1180, INTEL_BUS_CLK), + FREQ_INFO(1100, 1164, INTEL_BUS_CLK), + FREQ_INFO(1000, 1100, INTEL_BUS_CLK), + FREQ_INFO( 900, 1020, INTEL_BUS_CLK), + FREQ_INFO( 800, 1004, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM11_LV_130[] = { + /* 130 nm 1.10GHz Low Voltage Pentium M */ + FREQ_INFO(1100, 1180, INTEL_BUS_CLK), + FREQ_INFO(1000, 1164, INTEL_BUS_CLK), + FREQ_INFO( 900, 1100, INTEL_BUS_CLK), + FREQ_INFO( 800, 1020, INTEL_BUS_CLK), + FREQ_INFO( 600, 956, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM11_ULV_130[] = { + /* 130 nm 1.10GHz Ultra Low Voltage Pentium M */ + FREQ_INFO(1100, 1004, INTEL_BUS_CLK), + FREQ_INFO(1000, 988, INTEL_BUS_CLK), + FREQ_INFO( 900, 972, INTEL_BUS_CLK), + FREQ_INFO( 800, 956, INTEL_BUS_CLK), + FREQ_INFO( 600, 844, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM10_ULV_130[] = { + /* 130 nm 1.00GHz Ultra Low Voltage Pentium M */ + FREQ_INFO(1000, 1004, INTEL_BUS_CLK), + FREQ_INFO( 900, 988, INTEL_BUS_CLK), + FREQ_INFO( 800, 972, INTEL_BUS_CLK), + FREQ_INFO( 600, 844, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; + +/* + * Data from "Intel Pentium M Processor on 90nm Process with + * 2-MB L2 Cache Datasheet", Order Number 302189, Table 5. + */ +const freq_info PM_765A_90[] = { + /* 90 nm 2.10GHz Pentium M, VID #A */ + FREQ_INFO(2100, 1340, INTEL_BUS_CLK), + FREQ_INFO(1800, 1276, INTEL_BUS_CLK), + FREQ_INFO(1600, 1228, INTEL_BUS_CLK), + FREQ_INFO(1400, 1180, INTEL_BUS_CLK), + FREQ_INFO(1200, 1132, INTEL_BUS_CLK), + FREQ_INFO(1000, 1084, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_765B_90[] = { + /* 90 nm 2.10GHz Pentium M, VID #B */ + FREQ_INFO(2100, 1324, INTEL_BUS_CLK), + FREQ_INFO(1800, 1260, INTEL_BUS_CLK), + FREQ_INFO(1600, 1212, INTEL_BUS_CLK), + FREQ_INFO(1400, 1180, INTEL_BUS_CLK), + FREQ_INFO(1200, 1132, INTEL_BUS_CLK), + FREQ_INFO(1000, 1084, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_765C_90[] = { + /* 90 nm 2.10GHz Pentium M, VID #C */ + FREQ_INFO(2100, 1308, INTEL_BUS_CLK), + FREQ_INFO(1800, 1244, INTEL_BUS_CLK), + FREQ_INFO(1600, 1212, INTEL_BUS_CLK), + FREQ_INFO(1400, 1164, INTEL_BUS_CLK), + FREQ_INFO(1200, 1116, INTEL_BUS_CLK), + FREQ_INFO(1000, 1084, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_765E_90[] = { + /* 90 nm 2.10GHz Pentium M, VID #E */ + FREQ_INFO(2100, 1356, INTEL_BUS_CLK), + FREQ_INFO(1800, 1292, INTEL_BUS_CLK), + FREQ_INFO(1600, 1244, INTEL_BUS_CLK), + FREQ_INFO(1400, 1196, INTEL_BUS_CLK), + FREQ_INFO(1200, 1148, INTEL_BUS_CLK), + FREQ_INFO(1000, 1100, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_755A_90[] = { + /* 90 nm 2.00GHz Pentium M, VID #A */ + FREQ_INFO(2000, 1340, INTEL_BUS_CLK), + FREQ_INFO(1800, 1292, INTEL_BUS_CLK), + FREQ_INFO(1600, 1244, INTEL_BUS_CLK), + FREQ_INFO(1400, 1196, INTEL_BUS_CLK), + FREQ_INFO(1200, 1148, INTEL_BUS_CLK), + FREQ_INFO(1000, 1100, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_755B_90[] = { + /* 90 nm 2.00GHz Pentium M, VID #B */ + FREQ_INFO(2000, 1324, INTEL_BUS_CLK), + FREQ_INFO(1800, 1276, INTEL_BUS_CLK), + FREQ_INFO(1600, 1228, INTEL_BUS_CLK), + FREQ_INFO(1400, 1180, INTEL_BUS_CLK), + FREQ_INFO(1200, 1132, INTEL_BUS_CLK), + FREQ_INFO(1000, 1084, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_755C_90[] = { + /* 90 nm 2.00GHz Pentium M, VID #C */ + FREQ_INFO(2000, 1308, INTEL_BUS_CLK), + FREQ_INFO(1800, 1276, INTEL_BUS_CLK), + FREQ_INFO(1600, 1228, INTEL_BUS_CLK), + FREQ_INFO(1400, 1180, INTEL_BUS_CLK), + FREQ_INFO(1200, 1132, INTEL_BUS_CLK), + FREQ_INFO(1000, 1084, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_755D_90[] = { + /* 90 nm 2.00GHz Pentium M, VID #D */ + FREQ_INFO(2000, 1276, INTEL_BUS_CLK), + FREQ_INFO(1800, 1244, INTEL_BUS_CLK), + FREQ_INFO(1600, 1196, INTEL_BUS_CLK), + FREQ_INFO(1400, 1164, INTEL_BUS_CLK), + FREQ_INFO(1200, 1116, INTEL_BUS_CLK), + FREQ_INFO(1000, 1084, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_745A_90[] = { + /* 90 nm 1.80GHz Pentium M, VID #A */ + FREQ_INFO(1800, 1340, INTEL_BUS_CLK), + FREQ_INFO(1600, 1292, INTEL_BUS_CLK), + FREQ_INFO(1400, 1228, INTEL_BUS_CLK), + FREQ_INFO(1200, 1164, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_745B_90[] = { + /* 90 nm 1.80GHz Pentium M, VID #B */ + FREQ_INFO(1800, 1324, INTEL_BUS_CLK), + FREQ_INFO(1600, 1276, INTEL_BUS_CLK), + FREQ_INFO(1400, 1212, INTEL_BUS_CLK), + FREQ_INFO(1200, 1164, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_745C_90[] = { + /* 90 nm 1.80GHz Pentium M, VID #C */ + FREQ_INFO(1800, 1308, INTEL_BUS_CLK), + FREQ_INFO(1600, 1260, INTEL_BUS_CLK), + FREQ_INFO(1400, 1212, INTEL_BUS_CLK), + FREQ_INFO(1200, 1148, INTEL_BUS_CLK), + FREQ_INFO(1000, 1100, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_745D_90[] = { + /* 90 nm 1.80GHz Pentium M, VID #D */ + FREQ_INFO(1800, 1276, INTEL_BUS_CLK), + FREQ_INFO(1600, 1228, INTEL_BUS_CLK), + FREQ_INFO(1400, 1180, INTEL_BUS_CLK), + FREQ_INFO(1200, 1132, INTEL_BUS_CLK), + FREQ_INFO(1000, 1084, INTEL_BUS_CLK), + FREQ_INFO( 800, 1036, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_735A_90[] = { + /* 90 nm 1.70GHz Pentium M, VID #A */ + FREQ_INFO(1700, 1340, INTEL_BUS_CLK), + FREQ_INFO(1400, 1244, INTEL_BUS_CLK), + FREQ_INFO(1200, 1180, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_735B_90[] = { + /* 90 nm 1.70GHz Pentium M, VID #B */ + FREQ_INFO(1700, 1324, INTEL_BUS_CLK), + FREQ_INFO(1400, 1244, INTEL_BUS_CLK), + FREQ_INFO(1200, 1180, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_735C_90[] = { + /* 90 nm 1.70GHz Pentium M, VID #C */ + FREQ_INFO(1700, 1308, INTEL_BUS_CLK), + FREQ_INFO(1400, 1228, INTEL_BUS_CLK), + FREQ_INFO(1200, 1164, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_735D_90[] = { + /* 90 nm 1.70GHz Pentium M, VID #D */ + FREQ_INFO(1700, 1276, INTEL_BUS_CLK), + FREQ_INFO(1400, 1212, INTEL_BUS_CLK), + FREQ_INFO(1200, 1148, INTEL_BUS_CLK), + FREQ_INFO(1000, 1100, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_725A_90[] = { + /* 90 nm 1.60GHz Pentium M, VID #A */ + FREQ_INFO(1600, 1340, INTEL_BUS_CLK), + FREQ_INFO(1400, 1276, INTEL_BUS_CLK), + FREQ_INFO(1200, 1212, INTEL_BUS_CLK), + FREQ_INFO(1000, 1132, INTEL_BUS_CLK), + FREQ_INFO( 800, 1068, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_725B_90[] = { + /* 90 nm 1.60GHz Pentium M, VID #B */ + FREQ_INFO(1600, 1324, INTEL_BUS_CLK), + FREQ_INFO(1400, 1260, INTEL_BUS_CLK), + FREQ_INFO(1200, 1196, INTEL_BUS_CLK), + FREQ_INFO(1000, 1132, INTEL_BUS_CLK), + FREQ_INFO( 800, 1068, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_725C_90[] = { + /* 90 nm 1.60GHz Pentium M, VID #C */ + FREQ_INFO(1600, 1308, INTEL_BUS_CLK), + FREQ_INFO(1400, 1244, INTEL_BUS_CLK), + FREQ_INFO(1200, 1180, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_725D_90[] = { + /* 90 nm 1.60GHz Pentium M, VID #D */ + FREQ_INFO(1600, 1276, INTEL_BUS_CLK), + FREQ_INFO(1400, 1228, INTEL_BUS_CLK), + FREQ_INFO(1200, 1164, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_715A_90[] = { + /* 90 nm 1.50GHz Pentium M, VID #A */ + FREQ_INFO(1500, 1340, INTEL_BUS_CLK), + FREQ_INFO(1200, 1228, INTEL_BUS_CLK), + FREQ_INFO(1000, 1148, INTEL_BUS_CLK), + FREQ_INFO( 800, 1068, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_715B_90[] = { + /* 90 nm 1.50GHz Pentium M, VID #B */ + FREQ_INFO(1500, 1324, INTEL_BUS_CLK), + FREQ_INFO(1200, 1212, INTEL_BUS_CLK), + FREQ_INFO(1000, 1148, INTEL_BUS_CLK), + FREQ_INFO( 800, 1068, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_715C_90[] = { + /* 90 nm 1.50GHz Pentium M, VID #C */ + FREQ_INFO(1500, 1308, INTEL_BUS_CLK), + FREQ_INFO(1200, 1212, INTEL_BUS_CLK), + FREQ_INFO(1000, 1132, INTEL_BUS_CLK), + FREQ_INFO( 800, 1068, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_715D_90[] = { + /* 90 nm 1.50GHz Pentium M, VID #D */ + FREQ_INFO(1500, 1276, INTEL_BUS_CLK), + FREQ_INFO(1200, 1180, INTEL_BUS_CLK), + FREQ_INFO(1000, 1116, INTEL_BUS_CLK), + FREQ_INFO( 800, 1052, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_738_90[] = { + /* 90 nm 1.40GHz Low Voltage Pentium M */ + FREQ_INFO(1400, 1116, INTEL_BUS_CLK), + FREQ_INFO(1300, 1116, INTEL_BUS_CLK), + FREQ_INFO(1200, 1100, INTEL_BUS_CLK), + FREQ_INFO(1100, 1068, INTEL_BUS_CLK), + FREQ_INFO(1000, 1052, INTEL_BUS_CLK), + FREQ_INFO( 900, 1036, INTEL_BUS_CLK), + FREQ_INFO( 800, 1020, INTEL_BUS_CLK), + FREQ_INFO( 600, 988, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_733_90[] = { + /* 90 nm 1.10GHz Ultra Low Voltage Pentium M */ + FREQ_INFO(1100, 940, INTEL_BUS_CLK), + FREQ_INFO(1000, 924, INTEL_BUS_CLK), + FREQ_INFO( 900, 892, INTEL_BUS_CLK), + FREQ_INFO( 800, 876, INTEL_BUS_CLK), + FREQ_INFO( 600, 812, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; +const freq_info PM_723_90[] = { + /* 90 nm 1.00GHz Ultra Low Voltage Pentium M */ + FREQ_INFO(1000, 940, INTEL_BUS_CLK), + FREQ_INFO( 900, 908, INTEL_BUS_CLK), + FREQ_INFO( 800, 876, INTEL_BUS_CLK), + FREQ_INFO( 600, 812, INTEL_BUS_CLK), + FREQ_INFO( 0, 0, 1), +}; + +const cpu_info ESTprocs[] = { + INTEL(PM17_130, 1700, 1484, 600, 956, INTEL_BUS_CLK), + INTEL(PM16_130, 1600, 1484, 600, 956, INTEL_BUS_CLK), + INTEL(PM15_130, 1500, 1484, 600, 956, INTEL_BUS_CLK), + INTEL(PM14_130, 1400, 1484, 600, 956, INTEL_BUS_CLK), + INTEL(PM13_130, 1300, 1388, 600, 956, INTEL_BUS_CLK), + INTEL(PM13_LV_130, 1300, 1180, 600, 956, INTEL_BUS_CLK), + INTEL(PM12_LV_130, 1200, 1180, 600, 956, INTEL_BUS_CLK), + INTEL(PM11_LV_130, 1100, 1180, 600, 956, INTEL_BUS_CLK), + INTEL(PM11_ULV_130, 1100, 1004, 600, 844, INTEL_BUS_CLK), + INTEL(PM10_ULV_130, 1000, 1004, 600, 844, INTEL_BUS_CLK), + INTEL(PM_765A_90, 2100, 1340, 600, 988, INTEL_BUS_CLK), + INTEL(PM_765B_90, 2100, 1324, 600, 988, INTEL_BUS_CLK), + INTEL(PM_765C_90, 2100, 1308, 600, 988, INTEL_BUS_CLK), + INTEL(PM_765E_90, 2100, 1356, 600, 988, INTEL_BUS_CLK), + INTEL(PM_755A_90, 2000, 1340, 600, 988, INTEL_BUS_CLK), + INTEL(PM_755B_90, 2000, 1324, 600, 988, INTEL_BUS_CLK), + INTEL(PM_755C_90, 2000, 1308, 600, 988, INTEL_BUS_CLK), + INTEL(PM_755D_90, 2000, 1276, 600, 988, INTEL_BUS_CLK), + INTEL(PM_745A_90, 1800, 1340, 600, 988, INTEL_BUS_CLK), + INTEL(PM_745B_90, 1800, 1324, 600, 988, INTEL_BUS_CLK), + INTEL(PM_745C_90, 1800, 1308, 600, 988, INTEL_BUS_CLK), + INTEL(PM_745D_90, 1800, 1276, 600, 988, INTEL_BUS_CLK), + INTEL(PM_735A_90, 1700, 1340, 600, 988, INTEL_BUS_CLK), + INTEL(PM_735B_90, 1700, 1324, 600, 988, INTEL_BUS_CLK), + INTEL(PM_735C_90, 1700, 1308, 600, 988, INTEL_BUS_CLK), + INTEL(PM_735D_90, 1700, 1276, 600, 988, INTEL_BUS_CLK), + INTEL(PM_725A_90, 1600, 1340, 600, 988, INTEL_BUS_CLK), + INTEL(PM_725B_90, 1600, 1324, 600, 988, INTEL_BUS_CLK), + INTEL(PM_725C_90, 1600, 1308, 600, 988, INTEL_BUS_CLK), + INTEL(PM_725D_90, 1600, 1276, 600, 988, INTEL_BUS_CLK), + INTEL(PM_715A_90, 1500, 1340, 600, 988, INTEL_BUS_CLK), + INTEL(PM_715B_90, 1500, 1324, 600, 988, INTEL_BUS_CLK), + INTEL(PM_715C_90, 1500, 1308, 600, 988, INTEL_BUS_CLK), + INTEL(PM_715D_90, 1500, 1276, 600, 988, INTEL_BUS_CLK), + INTEL(PM_738_90, 1400, 1116, 600, 988, INTEL_BUS_CLK), + INTEL(PM_733_90, 1100, 940, 600, 812, INTEL_BUS_CLK), + INTEL(PM_723_90, 1000, 940, 600, 812, INTEL_BUS_CLK), + { NULL, 0, 0, NULL }, +}; + +static void est_identify(driver_t *driver, device_t parent); +static int est_probe(device_t parent); +static int est_attach(device_t parent); +static int est_detach(device_t parent); +static int est_find_cpu(const char *vendor, uint64_t msr, uint32_t bus_clk, + const freq_info **freqs); +static const freq_info *est_get_current(const freq_info *freq_list); +static int est_settings(device_t dev, struct cf_setting *sets, int *count); +static int est_set(device_t dev, const struct cf_setting *set); +static int est_get(device_t dev, struct cf_setting *set); +static int est_type(device_t dev, int *type); + +static device_method_t est_methods[] = { + /* Device interface */ + DEVMETHOD(device_identify, est_identify), + DEVMETHOD(device_probe, est_probe), + DEVMETHOD(device_attach, est_attach), + DEVMETHOD(device_detach, est_detach), + + /* cpufreq interface */ + DEVMETHOD(cpufreq_drv_set, est_set), + DEVMETHOD(cpufreq_drv_get, est_get), + DEVMETHOD(cpufreq_drv_type, est_type), + DEVMETHOD(cpufreq_drv_settings, est_settings), + {0, 0} +}; + +static driver_t est_driver = { + "est", + est_methods, + sizeof(struct est_softc), +}; + +static devclass_t est_devclass; +DRIVER_MODULE(est, cpu, est_driver, est_devclass, 0, 0); + +static void +est_identify(driver_t *driver, device_t parent) +{ + u_int p[4]; + + /* + * XXX If we're not on cpu 0, don't add a child. We should add + * MP support instead. + */ + if (device_get_unit(parent) != 0) + return; + + /* Make sure we're not being doubly invoked. */ + if (device_find_child(parent, "est", -1) != NULL) + return; + + /* Check that CPUID is supported and the vendor is Intel.*/ + if (cpu_high == 0 || strcmp(cpu_vendor, GenuineIntel) != 0) + return; + + /* Read capability bits and check if the CPU supports EST. */ + do_cpuid(1, p); + if ((p[2] & 0x80) == 0) + return; + + if (BUS_ADD_CHILD(parent, 0, "est", -1) == NULL) + device_printf(parent, "add est child failed\n"); +} + +static int +est_probe(device_t dev) +{ + const freq_info *f; + device_t perf_dev; + uint64_t msr; + int error, type; + + /* + * If the ACPI perf driver has attached and is not just offering + * info, let it manage things. + */ + perf_dev = device_find_child(device_get_parent(dev), "acpi_perf", -1); + if (perf_dev && device_is_attached(perf_dev)) { + error = CPUFREQ_DRV_TYPE(perf_dev, &type); + if (error == 0 && (type & CPUFREQ_FLAG_INFO_ONLY) == 0) + return (ENXIO); + } + + /* Attempt to enable SpeedStep if not currently enabled. */ + msr = rdmsr(MSR_MISC_ENABLE); + if ((msr & MSR_SS_ENABLE) == 0) { + msr |= MSR_SS_ENABLE; + wrmsr(MSR_MISC_ENABLE, msr); + + /* Check if the enable failed. */ + msr = rdmsr(MSR_MISC_ENABLE); + if ((msr & MSR_SS_ENABLE) == 0) { + device_printf(dev, "failed to enable SpeedStep\n"); + return (ENXIO); + } + } + + /* Identify the exact CPU model */ + msr = rdmsr(MSR_PERF_STATUS); + if (est_find_cpu(cpu_vendor, msr, INTEL_BUS_CLK, &f) != 0) { + printf( + "CPU claims to support Enhanced Speedstep, but is not recognized.\n" + "Please update driver or contact the maintainer.\n" + "cpu_vendor = %s msr = %0jx, bus_clk = %x\n", + cpu_vendor, msr, INTEL_BUS_CLK); + return (ENXIO); + } + + device_set_desc(dev, "Enhanced SpeedStep Frequency Control"); + return (0); +} + +static int +est_attach(device_t dev) +{ + struct est_softc *sc; + uint64_t msr; + + sc = device_get_softc(dev); + sc->dev = dev; + msr = rdmsr(MSR_PERF_STATUS); + est_find_cpu(cpu_vendor, msr, INTEL_BUS_CLK, &sc->freq_list); + cpufreq_register(dev); + + return (0); +} + +static int +est_detach(device_t dev) +{ + return (ENXIO); +} + +static int +est_find_cpu(const char *vendor, uint64_t msr, uint32_t bus_clk, + const freq_info **freqs) +{ + const cpu_info *p; + uint32_t id; + + /* Find a table which matches (vendor, id, bus_clk). */ + id = msr >> 32; + for (p = ESTprocs; p->id32 != 0; p++) { + if (strcmp(p->vendor, vendor) == 0 && p->id32 == id && + p->bus_clk == bus_clk) + break; + } + if (p->id32 == 0) + return (EOPNOTSUPP); + + /* Make sure the current setpoint is valid. */ + if (est_get_current(p->freqtab) == NULL) + return (EOPNOTSUPP); + + *freqs = p->freqtab; + return (0); +} + +static const freq_info * +est_get_current(const freq_info *freq_list) +{ + const freq_info *f; + int i; + uint16_t id16; + + /* + * Try a few times to get a valid value. Sometimes, if the CPU + * is in the middle of an asynchronous transition (i.e., P4TCC), + * we get a temporary invalid result. + */ + for (i = 0; i < 5; i++) { + id16 = rdmsr(MSR_PERF_STATUS) & 0xffff; + for (f = freq_list; f->id16 != 0; f++) { + if (f->id16 == id16) + return (f); + } + } + return (NULL); +} + +static int +est_settings(device_t dev, struct cf_setting *sets, int *count) +{ + struct est_softc *sc; + const freq_info *f; + int i; + + if (*count < EST_MAX_SETTINGS) + return (E2BIG); + + i = 0; + for (f = sc->freq_list; f->freq != 0; f++) { + sets[i].freq = f->freq; + sets[i].volts = f->volts; + sets[i].power = CPUFREQ_VAL_UNKNOWN; + sets[i].lat = EST_TRANS_LAT; + sets[i].dev = dev; + i++; + } + *count = i + 1; + + return (0); +} + +static int +est_set(device_t dev, const struct cf_setting *set) +{ + struct est_softc *sc; + const freq_info *f; + uint64_t msr; + + /* Find the setting matching the requested one. */ + sc = device_get_softc(dev); + for (f = sc->freq_list; f->freq != 0; f++) { + if (f->freq == set->freq) + break; + } + if (f->freq == 0) + return (EINVAL); + + /* Read the current register, mask out the old, set the new id. */ + msr = rdmsr(MSR_PERF_CTL); + msr = (msr & ~0xffffLL) | f->id16; + wrmsr(MSR_PERF_CTL, msr); + + return (0); +} + +static int +est_get(device_t dev, struct cf_setting *set) +{ + struct est_softc *sc; + const freq_info *f; + + sc = device_get_softc(dev); + f = est_get_current(sc->freq_list); + if (f == NULL) + return (ENXIO); + + set->freq = f->freq; + set->volts = f->volts; + set->power = CPUFREQ_VAL_UNKNOWN; + set->lat = EST_TRANS_LAT; + set->dev = dev; + return (0); +} + +static int +est_type(device_t dev, int *type) +{ + + if (type == NULL) + return (EINVAL); + + *type = CPUFREQ_TYPE_ABSOLUTE; + return (0); +} Index: i386/cpufreq/p4tcc.c =================================================================== RCS file: i386/cpufreq/p4tcc.c diff -N i386/cpufreq/p4tcc.c --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ i386/cpufreq/p4tcc.c 18 Feb 2005 00:05:53 -0000 _at__at_ -0,0 +1,259 _at__at_ +/*- + * Copyright (c) 2003 Ted Unangst + * Copyright (c) 2004 Maxim Sobolev <sobomax_at_FreeBSD.org> + * Copyright (c) 2005 Nate Lawson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Throttle clock frequency by using the thermal control circuit. This + * operates independently of SpeedStep and ACPI throttling and is supported + * on Pentium 4 and later models (feature TM). + * + * Reference: Intel Developer's manual v.3 #245472-012 + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/cpu.h> +#include <sys/kernel.h> +#include <sys/module.h> + +#include <machine/md_var.h> +#include <machine/specialreg.h> + +#include "cpufreq_if.h" + +struct p4tcc_softc { + device_t dev; + int set_count; +}; + +#define TCC_NUM_SETTINGS 8 + +#define TCC_ENABLE_BIT (1<<4) +#define TCC_REG_OFFSET 1 +#define TCC_SPEED_PERCENT(x) ((10000 * (x)) / TCC_NUM_SETTINGS) + +static void p4tcc_identify(driver_t *driver, device_t parent); +static int p4tcc_probe(device_t dev); +static int p4tcc_attach(device_t dev); +static int p4tcc_settings(device_t dev, struct cf_setting *sets, + int *count); +static int p4tcc_set(device_t dev, const struct cf_setting *set); +static int p4tcc_get(device_t dev, struct cf_setting *set); +static int p4tcc_type(device_t dev, int *type); + +static device_method_t p4tcc_methods[] = { + /* Device interface */ + DEVMETHOD(device_identify, p4tcc_identify), + DEVMETHOD(device_probe, p4tcc_probe), + DEVMETHOD(device_attach, p4tcc_attach), + + /* cpufreq interface */ + DEVMETHOD(cpufreq_drv_set, p4tcc_set), + DEVMETHOD(cpufreq_drv_get, p4tcc_get), + DEVMETHOD(cpufreq_drv_type, p4tcc_type), + DEVMETHOD(cpufreq_drv_settings, p4tcc_settings), + {0, 0} +}; + +static driver_t p4tcc_driver = { + "p4tcc", + p4tcc_methods, + sizeof(struct p4tcc_softc), +}; + +static devclass_t p4tcc_devclass; +DRIVER_MODULE(p4tcc, cpu, p4tcc_driver, p4tcc_devclass, 0, 0); + +static void +p4tcc_identify(driver_t *driver, device_t parent) +{ + + if ((cpu_feature & (CPUID_ACPI | CPUID_TM)) != (CPUID_ACPI | CPUID_TM)) + return; + if (BUS_ADD_CHILD(parent, 0, "p4tcc", -1) == NULL) + device_printf(parent, "add p4tcc child failed\n"); +} + +static int +p4tcc_probe(device_t dev) +{ + + device_set_desc(dev, "CPU Frequency Thermal Control"); + return (0); +} + +static int +p4tcc_attach(device_t dev) +{ + struct p4tcc_softc *sc; + struct cf_setting set; + + sc = device_get_softc(dev); + sc->dev = dev; + sc->set_count = TCC_NUM_SETTINGS; + + switch (cpu_id & 0xf) { + case 0x22: + case 0x24: + case 0x25: + case 0x27: + case 0x29: + /* + * These CPU models hang when set to 12.5%. + * See Errata O50, P44, and Z21. + */ + sc->set_count -= 1; + break; + case 0x07: /* errata N44 and P18 */ + case 0x0a: + case 0x12: + case 0x13: + /* + * These CPU models hang when set to 12.5% or 25%. + * See Errata N44 and P18l. + */ + sc->set_count -= 2; + break; + } + + /* + * On boot, the TCC is usually in Automatic mode where reading the + * current performance level is likely to produce bogus results. + * We switch it to On-Demand mode and set a known performance level + * to avoid ambiguity. Unfortunately, there is no reliable way to + * check that TCC is in the Automatic mode. Reading bit 4 of ACPI + * Thermal Monitor Control Register produces 0 no matter what the + * current mode. + */ + set.freq = 10000; + set.dev = dev; + CPUFREQ_DRV_SET(dev, &set); + + cpufreq_register(dev); + return (0); +} + +static int +p4tcc_settings(device_t dev, struct cf_setting *sets, int *count) +{ + struct p4tcc_softc *sc; + int i, val; + + sc = device_get_softc(dev); + if (sets == NULL || count == NULL) + return (EINVAL); + if (*count < sc->set_count) + return (E2BIG); + + /* Return a list of valid settings for this driver. */ + memset(sets, CPUFREQ_VAL_UNKNOWN, sizeof(*sets) * sc->set_count); + for (i = 0, val = sc->set_count; val != 0; i++, val--) { + sets[i].freq = TCC_SPEED_PERCENT(val); + sets[i].dev = dev; + } + *count = sc->set_count; + + return (0); +} + +static int +p4tcc_set(device_t dev, const struct cf_setting *set) +{ + struct p4tcc_softc *sc; + uint64_t mask, msr; + int val; + + if (set == NULL) + return (EINVAL); + sc = device_get_softc(dev); + + /* + * Validate requested state converts to a setting that is an + * integer from [1 .. sc->set_count]. + */ + val = set->freq * sc->set_count / 10000; + if (val * 10000 != set->freq * sc->set_count || + val < 1 || val > sc->set_count) + return (EINVAL); + + /* Convert a setting of TCC_NUM_SETTINGS to 0. */ + if (val == TCC_NUM_SETTINGS) + val = 0; + + /* + * Read the current register and mask off the old setting/enable bit. + * If the new val is nonzero, set it and the enable bit. Finally, + * write the new register. + */ + msr = rdmsr(MSR_THERM_CONTROL); + mask = (TCC_NUM_SETTINGS - 1) << TCC_REG_OFFSET; + msr &= ~(mask | TCC_ENABLE_BIT); + if (val) + msr |= (val << TCC_REG_OFFSET) | TCC_ENABLE_BIT; + wrmsr(MSR_THERM_CONTROL, msr); + + return (0); +} + +static int +p4tcc_get(device_t dev, struct cf_setting *set) +{ + uint64_t msr; + int val; + + if (set == NULL) + return (EINVAL); + + /* Read the current register and extract the current setting. */ + msr = rdmsr(MSR_THERM_CONTROL); + val = (msr >> TCC_REG_OFFSET) & (TCC_NUM_SETTINGS - 1); + + /* Convert a setting of 0 to TCC_NUM_SETTINGS. */ + if (val == 0) + val = TCC_NUM_SETTINGS; + + memset(set, CPUFREQ_VAL_UNKNOWN, sizeof(*set)); + set->freq = TCC_SPEED_PERCENT(val); + set->dev = dev; + + return (0); +} + +static int +p4tcc_type(device_t dev, int *type) +{ + + if (type == NULL) + return (EINVAL); + + *type = CPUFREQ_TYPE_RELATIVE; + return (0); +}Received on Thu Feb 17 2005 - 23:33:50 UTC
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