190 lines
4.5 KiB
C
190 lines
4.5 KiB
C
/*-
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* Copyright (c) 2005, Joseph Koshy
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/pmc.h>
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#include <sys/systm.h>
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#include <machine/apicreg.h>
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#include <machine/pmc_mdep.h>
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#include <machine/md_var.h>
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extern volatile lapic_t *lapic;
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void
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pmc_x86_lapic_enable_pmc_interrupt(void)
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{
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uint32_t value;
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value = lapic->lvt_pcint;
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value &= ~APIC_LVT_M;
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lapic->lvt_pcint = value;
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}
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static struct pmc_mdep *
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pmc_intel_initialize(void)
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{
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struct pmc_mdep *pmc_mdep;
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enum pmc_cputype cputype;
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int error, model;
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KASSERT(strcmp(cpu_vendor, "GenuineIntel") == 0,
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("[intel,%d] Initializing non-intel processor", __LINE__));
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PMCDBG(MDP,INI,0, "intel-initialize cpuid=0x%x", cpu_id);
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cputype = -1;
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switch (cpu_id & 0xF00) {
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#if defined(__i386__)
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case 0x500: /* Pentium family processors */
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cputype = PMC_CPU_INTEL_P5;
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break;
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case 0x600: /* Pentium Pro, Celeron, Pentium II & III */
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switch ((cpu_id & 0xF0) >> 4) { /* model number field */
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case 0x1:
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cputype = PMC_CPU_INTEL_P6;
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break;
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case 0x3: case 0x5:
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cputype = PMC_CPU_INTEL_PII;
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break;
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case 0x6:
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cputype = PMC_CPU_INTEL_CL;
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break;
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case 0x7: case 0x8: case 0xA: case 0xB:
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cputype = PMC_CPU_INTEL_PIII;
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break;
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case 0x9: case 0xD: case 0xE:
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cputype = PMC_CPU_INTEL_PM;
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break;
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}
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break;
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#endif
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#if defined(__i386__) || defined(__amd64__)
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case 0xF00: /* P4 */
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model = ((cpu_id & 0xF0000) >> 12) | ((cpu_id & 0xF0) >> 4);
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if (model >= 0 && model <= 4) /* known models */
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cputype = PMC_CPU_INTEL_PIV;
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break;
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}
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#endif
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if ((int) cputype == -1) {
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printf("pmc: Unknown Intel CPU.\n");
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return NULL;
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}
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MALLOC(pmc_mdep, struct pmc_mdep *, sizeof(struct pmc_mdep),
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M_PMC, M_WAITOK|M_ZERO);
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pmc_mdep->pmd_cputype = cputype;
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pmc_mdep->pmd_nclass = 2;
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pmc_mdep->pmd_classes[0].pm_class = PMC_CLASS_TSC;
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pmc_mdep->pmd_classes[0].pm_caps = PMC_CAP_READ;
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pmc_mdep->pmd_classes[0].pm_width = 64;
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pmc_mdep->pmd_nclasspmcs[0] = 1;
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error = 0;
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switch (cputype) {
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#if defined(__i386__) || defined(__amd64__)
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/*
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* Intel Pentium 4 Processors, and P4/EMT64 processors.
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*/
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case PMC_CPU_INTEL_PIV:
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error = pmc_initialize_p4(pmc_mdep);
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break;
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#endif
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#if defined(__i386__)
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/*
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* P6 Family Processors
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*/
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case PMC_CPU_INTEL_P6:
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case PMC_CPU_INTEL_CL:
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case PMC_CPU_INTEL_PII:
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case PMC_CPU_INTEL_PIII:
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case PMC_CPU_INTEL_PM:
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error = pmc_initialize_p6(pmc_mdep);
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break;
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/*
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* Intel Pentium PMCs.
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*/
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case PMC_CPU_INTEL_P5:
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error = pmc_initialize_p5(pmc_mdep);
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break;
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#endif
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default:
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KASSERT(0,("[intel,%d] Unknown CPU type", __LINE__));
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}
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if (error) {
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FREE(pmc_mdep, M_PMC);
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pmc_mdep = NULL;
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}
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return pmc_mdep;
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}
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/*
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* Machine dependent initialization for x86 class platforms.
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*/
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struct pmc_mdep *
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pmc_md_initialize()
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{
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int i;
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struct pmc_mdep *md;
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/* determine the CPU kind */
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md = NULL;
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if (strcmp(cpu_vendor, "AuthenticAMD") == 0)
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md = pmc_amd_initialize();
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else if (strcmp(cpu_vendor, "GenuineIntel") == 0)
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md = pmc_intel_initialize();
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/* disallow sampling if we do not have an LAPIC */
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if (md != NULL && lapic == NULL)
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for (i = 1; i < md->pmd_nclass; i++)
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md->pmd_classes[i].pm_caps &= ~PMC_CAP_INTERRUPT;
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return md;
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}
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