+++ /dev/null
-/* $NetBSD: est.c,v 1.25 2006/06/18 16:39:56 nonaka Exp $ */
-/*
- * Copyright (c) 2003 Michael Eriksson.
- * 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.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * 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.
- */
-/*-
- * Copyright (c) 2004 The NetBSD Foundation, Inc.
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the NetBSD
- * Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``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 FOUNDATION OR CONTRIBUTORS
- * 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.
- */
-
-/*
- * This is a driver for Intel's Enhanced SpeedStep Technology (EST),
- * as implemented in Pentium M processors.
- *
- * Reference documentation:
- *
- * - IA-32 Intel Architecture Software Developer's Manual, Volume 3:
- * System Programming Guide.
- * Section 13.14, Enhanced Intel SpeedStep technology.
- * Table B-2, MSRs in Pentium M Processors.
- * http://www.intel.com/design/pentium4/manuals/253668.htm
- *
- * - Intel Pentium M Processor Datasheet.
- * Table 5, Voltage and Current Specifications.
- * http://www.intel.com/design/mobile/datashts/252612.htm
- *
- * - Intel Pentium M Processor on 90 nm Process with 2-MB L2 Cache Datasheet
- * Table 3-4, 3-5, 3-6, Voltage and Current Specifications.
- * http://www.intel.com/design/mobile/datashts/302189.htm
- *
- * - Linux cpufreq patches, speedstep-centrino.c.
- * Encoding of MSR_PERF_CTL and MSR_PERF_STATUS.
- * http://www.codemonkey.org.uk/projects/cpufreq/cpufreq-2.4.22-pre6-1.gz
- *
- * ACPI objects: _PCT is MSR location, _PSS is freq/voltage, _PPC is caps.
- *
- * $NetBSD: est.c,v 1.25 2006/06/18 16:39:56 nonaka Exp $
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/malloc.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/sysctl.h>
-
-#include <machine/cpu.h>
-#include <machine/md_var.h>
-#include <machine/specialreg.h>
-
-
-struct fq_info {
- int mhz;
- int mv;
-};
-
-/* Ultra Low Voltage Intel Pentium M processor 900 MHz */
-static const struct fq_info pentium_m_900[] = {
- { 900, 1004 },
- { 800, 988 },
- { 600, 844 },
-};
-
-/* Ultra Low Voltage Intel Pentium M processor 1.00 GHz */
-static const struct fq_info pentium_m_1000[] = {
- { 1000, 1004 },
- { 900, 988 },
- { 800, 972 },
- { 600, 844 },
-};
-
-/* Low Voltage Intel Pentium M processor 1.10 GHz */
-static const struct fq_info pentium_m_1100[] = {
- { 1100, 1180 },
- { 1000, 1164 },
- { 900, 1100 },
- { 800, 1020 },
- { 600, 956 },
-};
-
-/* Low Voltage Intel Pentium M processor 1.20 GHz */
-static const struct fq_info pentium_m_1200[] = {
- { 1200, 1180 },
- { 1100, 1164 },
- { 1000, 1100 },
- { 900, 1020 },
- { 800, 1004 },
- { 600, 956 },
-};
-
-/* Low Voltage Intel Pentium M processor 1.30 GHz */
-static const struct fq_info pentium_m_1300_lv[] = {
- { 1300, 1180 },
- { 1200, 1164 },
- { 1100, 1100 },
- { 1000, 1020 },
- { 900, 1004 },
- { 800, 988 },
- { 600, 956 },
-};
-
-/* Intel Pentium M processor 1.30 GHz */
-static const struct fq_info pentium_m_1300[] = {
- { 1300, 1388 },
- { 1200, 1356 },
- { 1000, 1292 },
- { 800, 1260 },
- { 600, 956 },
-};
-
-/* Intel Pentium M processor 1.40 GHz */
-static const struct fq_info pentium_m_1400[] = {
- { 1400, 1484 },
- { 1200, 1436 },
- { 1000, 1308 },
- { 800, 1180 },
- { 600, 956 }
-};
-
-/* Intel Pentium M processor 1.50 GHz */
-static const struct fq_info pentium_m_1500[] = {
- { 1500, 1484 },
- { 1400, 1452 },
- { 1200, 1356 },
- { 1000, 1228 },
- { 800, 1116 },
- { 600, 956 }
-};
-
-/* Intel Pentium M processor 1.60 GHz */
-static const struct fq_info pentium_m_1600[] = {
- { 1600, 1484 },
- { 1400, 1420 },
- { 1200, 1276 },
- { 1000, 1164 },
- { 800, 1036 },
- { 600, 956 }
-};
-
-/* Intel Pentium M processor 1.70 GHz */
-static const struct fq_info pentium_m_1700[] = {
- { 1700, 1484 },
- { 1400, 1308 },
- { 1200, 1228 },
- { 1000, 1116 },
- { 800, 1004 },
- { 600, 956 }
-};
-
-/* Intel Pentium M processor 723 Ultra Low Voltage 1.0 GHz */
-static const struct fq_info pentium_m_n723[] = {
- { 1000, 940 },
- { 900, 908 },
- { 800, 876 },
- { 600, 812 }
-};
-
-/* Intel Pentium M processor 733 Ultra Low Voltage 1.1 GHz */
-static const struct fq_info pentium_m_n733[] = {
- { 1100, 940 },
- { 1000, 924 },
- { 900, 892 },
- { 800, 876 },
- { 600, 812 }
-};
-
-/* Intel Pentium M processor 753 Ultra Low Voltage 1.2 GHz */
-static const struct fq_info pentium_m_n753[] = {
- { 1200, 940 },
- { 1100, 924 },
- { 1000, 908 },
- { 900, 876 },
- { 800, 860 },
- { 600, 812 }
-};
-
-/* Intel Pentium M processor 773 Ultra Low Voltage 1.3 GHz */
-static const struct fq_info pentium_m_n773[] = {
- { 1300, 940 },
- { 1200, 924 },
- { 1100, 908 },
- { 1000, 892 },
- { 900, 876 },
- { 800, 860 },
- { 600, 812 }
-};
-
-/* Intel Pentium M processor 738 Low Voltage 1.4 GHz */
-static const struct fq_info pentium_m_n738[] = {
- { 1400, 1116 },
- { 1300, 1116 },
- { 1200, 1100 },
- { 1100, 1068 },
- { 1000, 1052 },
- { 900, 1036 },
- { 800, 1020 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 758 Low Voltage 1.5 GHz */
-static const struct fq_info pentium_m_n758[] = {
- { 1500, 1116 },
- { 1400, 1116 },
- { 1300, 1100 },
- { 1200, 1084 },
- { 1100, 1068 },
- { 1000, 1052 },
- { 900, 1036 },
- { 800, 1020 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 778 Low Voltage 1.6 GHz */
-static const struct fq_info pentium_m_n778[] = {
- { 1600, 1116 },
- { 1500, 1116 },
- { 1400, 1100 },
- { 1300, 1184 },
- { 1200, 1068 },
- { 1100, 1052 },
- { 1000, 1052 },
- { 900, 1036 },
- { 800, 1020 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 710 1.4 GHz */
-static const struct fq_info pentium_m_n710[] = {
- { 1400, 1340 },
- { 1200, 1228 },
- { 1000, 1148 },
- { 800, 1068 },
- { 600, 998 }
-};
-
-/* Intel Pentium M processor 715 1.5 GHz */
-static const struct fq_info pentium_m_n715[] = {
- { 1500, 1340 },
- { 1200, 1228 },
- { 1000, 1148 },
- { 800, 1068 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 725 1.6 GHz */
-static const struct fq_info pentium_m_n725[] = {
- { 1600, 1340 },
- { 1400, 1276 },
- { 1200, 1212 },
- { 1000, 1132 },
- { 800, 1068 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 730 1.6 GHz */
-static const struct fq_info pentium_m_n730[] = {
- { 1600, 1308 },
- { 1333, 1260 },
- { 1200, 1212 },
- { 1067, 1180 },
- { 800, 988 }
-};
-
-/* Intel Pentium M processor 735 1.7 GHz */
-static const struct fq_info pentium_m_n735[] = {
- { 1700, 1340 },
- { 1400, 1244 },
- { 1200, 1180 },
- { 1000, 1116 },
- { 800, 1052 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 740 1.73 GHz */
-static const struct fq_info pentium_m_n740[] = {
- { 1733, 1356 },
- { 1333, 1212 },
- { 1067, 1100 },
- { 800, 988 },
-};
-
-/* Intel Pentium M processor 740 1.73 GHz (988-1308mV version?) */
-static const struct fq_info pentium_m_n740_2[] = {
- { 1733, 1308 },
- { 1333, 1148 },
- { 1067, 1068 },
- { 800, 988 }
-};
-
-/* Intel Pentium M processor 745 1.8 GHz */
-static const struct fq_info pentium_m_n745[] = {
- { 1800, 1340 },
- { 1600, 1292 },
- { 1400, 1228 },
- { 1200, 1164 },
- { 1000, 1116 },
- { 800, 1052 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 750 1.86 GHz */
-/* values extracted from \_PR\NPSS (via _PSS) SDST ACPI table */
-static const struct fq_info pentium_m_n750[] = {
- { 1867, 1308 },
- { 1600, 1228 },
- { 1333, 1148 },
- { 1067, 1068 },
- { 800, 988 }
-};
-
-static const struct fq_info pentium_m_n750_2[] = {
- { 1867, 1356 },
- { 1600, 1228 },
- { 1333, 1148 },
- { 1067, 1068 },
- { 800, 988 }
-};
-
-/* Intel Pentium M processor 755 2.0 GHz */
-static const struct fq_info pentium_m_n755[] = {
- { 2000, 1340 },
- { 1800, 1292 },
- { 1600, 1244 },
- { 1400, 1196 },
- { 1200, 1148 },
- { 1000, 1100 },
- { 800, 1052 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 760 2.0 GHz */
-static const struct fq_info pentium_m_n760[] = {
- { 2000, 1356 },
- { 1600, 1244 },
- { 1333, 1164 },
- { 1067, 1084 },
- { 800, 988 }
-};
-
-/* Intel Pentium M processor 760 2.0 GHz */
-static const struct fq_info pentium_m_n760_2[] = {
- { 2000, 1308 },
- { 1600, 1244 },
- { 1333, 1164 },
- { 1067, 1084 },
- { 800, 988 }
-};
-
-/* Intel Pentium M processor 765 2.1 GHz */
-static const struct fq_info pentium_m_n765[] = {
- { 2100, 1340 },
- { 1800, 1276 },
- { 1600, 1228 },
- { 1400, 1180 },
- { 1200, 1132 },
- { 1000, 1084 },
- { 800, 1036 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 770 2.13 GHz */
-static const struct fq_info pentium_m_n770[] = {
- { 2133, 1551 },
- { 1800, 1429 },
- { 1600, 1356 },
- { 1400, 1180 },
- { 1200, 1132 },
- { 1000, 1084 },
- { 800, 1036 },
- { 600, 988 }
-};
-
-/* Intel Pentium M processor 770 2.13 GHz */
-static const struct fq_info pentium_m_n770_2[] = {
- { 2133, 1356 },
- { 1867, 1292 },
- { 1600, 1212 },
- { 1333, 1148 },
- { 1067, 1068 },
- { 800, 988 }
-};
-
-/* Intel Pentium Core Duo T2300 */
-static const struct fq_info pentium_core_duo_t2300[] = {
- { 1666, 1404 },
- { 1500, 1404 },
- { 1333, 1404 },
- { 1167, 1404 },
- { 1000, 1004 },
- { 667, 1004 },
- { 333, 1004 },
- { 167, 1004 },
-};
-
-static const struct fq_info pentium_core2_duo_t7500[] = {
- { 2200, 1420 },
- { 1600, 1212 },
- { 1200, 1068 },
- { 800, 988 },
-};
-
-struct fqlist {
- const char *brand_tag;
- const u_int cpu_id;
- size_t tablec;
- const struct fq_info *table;
- const int fsbmult; /* in multiples of 133 MHz */
-};
-
-#define ENTRY(s, i, v, f) { s, i, sizeof(v) / sizeof((v)[0]), v, f }
-static const struct fqlist pentium_m[] = { /* Banias */
- ENTRY(" 900", 0x0695, pentium_m_900, 3),
- ENTRY("1000", 0x0695, pentium_m_1000, 3),
- ENTRY("1100", 0x0695, pentium_m_1100, 3),
- ENTRY("1200", 0x0695, pentium_m_1200, 3),
- ENTRY("1300", 0x0695, pentium_m_1300, 3),
- ENTRY("1300", 0x0695, pentium_m_1300_lv, 3),
- ENTRY("1400", 0x0695, pentium_m_1400, 3),
- ENTRY("1500", 0x0695, pentium_m_1500, 3),
- ENTRY("1600", 0x0695, pentium_m_1600, 3),
- ENTRY("1700", 0x0695, pentium_m_1700, 3),
-};
-
-static const struct fqlist pentium_m_dothan[] = {
-
- /* low voltage CPUs */
- ENTRY("1.00", 0x06d8, pentium_m_n723, 3),
- ENTRY("1.10", 0x06d6, pentium_m_n733, 3),
- ENTRY("1.20", 0x06d8, pentium_m_n753, 3),
- ENTRY("1.30", 0, pentium_m_n773, 3), /* does this exist? */
-
- /* ultra low voltage CPUs */
- ENTRY("1.40", 0x06d6, pentium_m_n738, 3),
- ENTRY("1.50", 0x06d8, pentium_m_n758, 3),
- ENTRY("1.60", 0x06d8, pentium_m_n778, 3),
-
- /* 'regular' 400 MHz FSB CPUs */
- ENTRY("1.40", 0x06d6, pentium_m_n710, 3),
- ENTRY("1.50", 0x06d6, pentium_m_n715, 3),
- ENTRY("1.50", 0x06d8, pentium_m_n715, 3),
- ENTRY("1.60", 0x06d6, pentium_m_n725, 3),
- ENTRY("1.70", 0x06d6, pentium_m_n735, 3),
- ENTRY("1.80", 0x06d6, pentium_m_n745, 3),
- ENTRY("2.00", 0x06d6, pentium_m_n755, 3),
- ENTRY("2.10", 0x06d6, pentium_m_n765, 3),
-
- /* 533 MHz FSB CPUs */
- ENTRY("1.60", 0x06d8, pentium_m_n730, 4),
- ENTRY("1.73", 0x06d8, pentium_m_n740, 4),
- ENTRY("1.73", 0x06d8, pentium_m_n740_2, 4),
- ENTRY("1.86", 0x06d8, pentium_m_n750, 4),
- ENTRY("1.86", 0x06d8, pentium_m_n750_2, 4),
- ENTRY("2.00", 0x06d8, pentium_m_n760, 4),
- ENTRY("2.00", 0x06d8, pentium_m_n760_2, 4),
- ENTRY("2.13", 0x06d8, pentium_m_n770, 4),
- ENTRY("2.13", 0x06d8, pentium_m_n770_2, 4),
-
-
-};
-
-static const struct fqlist pentium_yonah[] = {
-
- /* 666 MHz FSB CPUs */
- ENTRY("1.66", 0x06e8, pentium_core_duo_t2300, 5 ),
-};
-
-static const struct fqlist pentium_merom[] = {
-
- /* 800 MHz FSB CPUs */
- ENTRY("2.20", 0x06fa, pentium_core2_duo_t7500, 6 ),
-};
-
-#undef ENTRY
-
-struct est_cpu {
- const char *brand_prefix;
- const char *brand_suffix;
- size_t listc;
- const struct fqlist *list;
-};
-
-static const struct est_cpu est_cpus[] = {
- {
- "Intel(R) Pentium(R) M processor ", "MHz",
- NELEM(pentium_m),
- pentium_m
- },
- {
- "Intel(R) Pentium(R) M processor ", "GHz",
- NELEM(pentium_m_dothan),
- pentium_m_dothan
- },
- {
- "Genuine Intel(R) CPU T2300 @ ", "GHz",
- NELEM(pentium_yonah),
- pentium_yonah
- },
- {
- "Intel(R) Core(TM)2 Duo CPU T7500 @ ", "GHz",
- NELEM(pentium_merom),
- pentium_merom
- },
-};
-
-#define NESTCPUS NELEM(est_cpus)
-
-#define MSR2MV(msr) (((int) (msr) & 0xff) * 16 + 700)
-#define MSR2MHZ(msr) (((((int) (msr) >> 8) & 0xff) * 100 * fsbmult + 1)/ 3)
-#define MV2MSR(mv) ((((int) (mv) - 700) >> 4) & 0xff)
-#define MHZ2MSR(mhz) (((3 * (mhz + 30) / (100 * fsbmult)) & 0xff) << 8)
-/* XXX 30 is slop to deal with the 33.333 MHz roundoff values */
-
-/*
- * Names and numbers from IA-32 System Programming Guide
- * (not found in <machine/specialregs.h>
- */
-#define MSR_PERF_STATUS 0x198
-#define MSR_PERF_CTL 0x199
-
-static const struct fqlist *est_fqlist; /* not NULL if functional */
-static int fsbmult;
-
-static const char est_desc[] = "Enhanced SpeedStep";
-
-static char freqs_available[80];
-
-static int
-est_sysctl_helper(SYSCTL_HANDLER_ARGS)
-{
- uint64_t msr;
- int fq, oldfq, err = 0;
- int i;
-
- if (est_fqlist == NULL)
- return (EOPNOTSUPP);
-
- oldfq = MSR2MHZ(rdmsr(MSR_PERF_CTL));
-
- if (req->newptr != NULL) {
- err = SYSCTL_IN(req, &fq, sizeof(fq));
- if (err)
- return err;
-
- if (fq != oldfq) {
- for (i = est_fqlist->tablec - 1; i > 0; i--) {
- if (est_fqlist->table[i].mhz >= fq)
- break;
- }
- fq = est_fqlist->table[i].mhz;
- msr = (rdmsr(MSR_PERF_CTL) & ~0xffffULL) |
- MV2MSR(est_fqlist->table[i].mv) |
- MHZ2MSR(est_fqlist->table[i].mhz);
- wrmsr(MSR_PERF_CTL, msr);
- }
- } else {
- err = SYSCTL_OUT(req, &oldfq, sizeof(oldfq));
- }
-
- return err;
-}
-
-/*
- * Look for a CPU matching hw.model
- */
-static const struct fqlist *
-findcpu(const char *hwmodel, int mv)
-{
- const struct est_cpu *ccpu;
- const struct fqlist *fql;
- const char *tag;
- size_t len;
- size_t i;
- int k;
-
- for (ccpu = est_cpus; ccpu < est_cpus + NESTCPUS; ++ccpu) {
- len = strlen(ccpu->brand_prefix);
- if (strncmp(ccpu->brand_prefix, hwmodel, len) != 0)
- continue;
- tag = hwmodel + len;
- for (i = 0; i < ccpu->listc; i++) {
- fql = &ccpu->list[i];
- len = strlen(fql->brand_tag);
- if (strncmp(fql->brand_tag, tag, len) != 0 ||
- strcmp(ccpu->brand_suffix, tag + len))
- continue;
-
- if (fql->cpu_id == 0 || fql->cpu_id == cpu_id) {
- /* verify operating point is in table, because
- CPUID + brand_tag still isn't unique. */
- for (k = fql->tablec - 1; k >= 0; k--) {
- if (fql->table[k].mv == mv)
- return fql;
- }
- }
- }
- }
- return(NULL);
-}
-
-
-static struct sysctl_ctx_list machdep_est_ctx;
-
-static int
-est_init(void)
-{
- char hwmodel[128];
- int mib[] = { CTL_HW, HW_MODEL };
- size_t modellen = sizeof(hwmodel);
- struct sysctl_oid *oid, *leaf;
- uint64_t msr;
- int mv;
- size_t len, freq_len;
- int err;
- size_t i;
-
- if ((cpu_feature2 & CPUID2_EST) == 0) {
- kprintf("Enhanced SpeedStep unsupported on this hardware.\n");
- return(EOPNOTSUPP);
- }
-
- modellen = sizeof(hwmodel);
- err = kernel_sysctl(mib, 2, hwmodel, &modellen, NULL, 0, NULL);
- if (err) {
- kprintf("kernel_sysctl hw.model failed\n");
- return(err);
- }
-
- msr = rdmsr(MSR_PERF_STATUS);
- mv = MSR2MV(msr);
- kprintf("%s (%d mV) ", est_desc, mv);
-
- est_fqlist = findcpu(hwmodel, mv);
- if (est_fqlist == NULL) {
- kprintf(" - unknown CPU or operating point"
- "(cpu_id:%#x, msr:%#llx).\n", cpu_id, msr);
- return(EOPNOTSUPP);
- }
-
- /*
- * OK, tell the user the available frequencies.
- */
- fsbmult = est_fqlist->fsbmult;
- kprintf("%d MHz\n", MSR2MHZ(msr));
-
- freq_len = est_fqlist->tablec * (sizeof("9999 ")-1) + 1;
- if (freq_len >= sizeof(freqs_available)) {
- kprintf("increase the size of freqs_available[]\n");
- return(ENOMEM);
- }
- freqs_available[0] = '\0';
- len = 0;
- for (i = 0; i < est_fqlist->tablec; i++) {
- len += ksnprintf(freqs_available + len, freq_len - len, "%d%s",
- est_fqlist->table[i].mhz,
- i < est_fqlist->tablec - 1 ? " " : "");
- }
- kprintf("%s frequencies available (MHz): %s\n", est_desc,
- freqs_available);
-
- /*
- * Setup the sysctl sub-tree machdep.est.*
- */
- oid = SYSCTL_ADD_NODE(&machdep_est_ctx,
- SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO, "est",
- CTLFLAG_RD, NULL, "");
- if (oid == NULL)
- return(EOPNOTSUPP);
- oid = SYSCTL_ADD_NODE(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
- OID_AUTO, "frequency", CTLFLAG_RD, NULL, "");
- if (oid == NULL)
- return(EOPNOTSUPP);
- leaf = SYSCTL_ADD_PROC(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
- OID_AUTO, "target", CTLTYPE_INT | CTLFLAG_RW, NULL, 0,
- est_sysctl_helper, "I",
- "Target CPU frequency for Enhanced SpeedStep");
- if (leaf == NULL)
- return(EOPNOTSUPP);
- leaf = SYSCTL_ADD_PROC(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
- OID_AUTO, "current", CTLTYPE_INT | CTLFLAG_RD, NULL, 0,
- est_sysctl_helper, "I",
- "Current CPU frequency for Enhanced SpeedStep");
- if (leaf == NULL)
- return(EOPNOTSUPP);
- leaf = SYSCTL_ADD_STRING(&machdep_est_ctx, SYSCTL_CHILDREN(oid),
- OID_AUTO, "available", CTLFLAG_RD, freqs_available,
- sizeof(freqs_available),
- "CPU frequencies supported by Enhanced SpeedStep");
- if (leaf == NULL)
- return(EOPNOTSUPP);
-
- return(0);
-}
-
-static int
-est_modevh(struct module *m __unused, int what, void *arg __unused)
-{
- int error;
-
- switch (what) {
- case MOD_LOAD:
- error = sysctl_ctx_init(&machdep_est_ctx);
- if (error != 0)
- break;
- error = est_init();
- break;
- case MOD_UNLOAD:
- error = sysctl_ctx_free(&machdep_est_ctx);
- break;
- default:
- error = EINVAL;
- break;
- }
- return(error);
-}
-
-static moduledata_t est_mod = {
- "est",
- est_modevh,
- NULL,
-};
-
-DECLARE_MODULE(est, est_mod, SI_BOOT2_KLD, SI_ORDER_ANY);
projects / dragonfly.git / commitdiff