diff options
Diffstat (limited to 'sys/hwpmc/hwpmc_intel.c')
| -rw-r--r-- | sys/hwpmc/hwpmc_intel.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/sys/hwpmc/hwpmc_intel.c b/sys/hwpmc/hwpmc_intel.c new file mode 100644 index 0000000..2448b37 --- /dev/null +++ b/sys/hwpmc/hwpmc_intel.c @@ -0,0 +1,142 @@ +/*- + * Copyright (c) 2003-2005 Joseph Koshy + * 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 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 AUTHOR 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/pmckern.h> +#include <sys/smp.h> +#include <sys/systm.h> + +#include <machine/cputypes.h> +#include <machine/md_var.h> +#include <machine/pmc_mdep.h> +#include <machine/specialreg.h> + +struct pmc_mdep * +pmc_intel_initialize(void) +{ + struct pmc_mdep *pmc_mdep; + enum pmc_cputype cputype; + int error, model; + + KASSERT(strcmp(cpu_vendor, "GenuineIntel") == 0, + ("[intel,%d] Initializing non-intel processor", __LINE__)); + + PMCDBG(MDP,INI,0, "intel-initialize cpuid=0x%x", cpu_id); + + cputype = -1; + + switch (cpu_id & 0xF00) { + case 0x500: /* Pentium family processors */ + cputype = PMC_CPU_INTEL_P5; + break; + case 0x600: /* Pentium Pro, Celeron, Pentium II & III */ + switch ((cpu_id & 0xF0) >> 4) { /* model number field */ + case 0x1: + cputype = PMC_CPU_INTEL_P6; + break; + case 0x3: case 0x5: + cputype = PMC_CPU_INTEL_PII; + break; + case 0x6: + cputype = PMC_CPU_INTEL_CL; + break; + case 0x7: case 0x8: case 0xA: case 0xB: + cputype = PMC_CPU_INTEL_PIII; + break; + case 0x9: case 0xD: + cputype = PMC_CPU_INTEL_PM; + break; + } + break; + case 0xF00: /* P4 */ + model = ((cpu_id & 0xF0000) >> 12) | ((cpu_id & 0xF0) >> 4); + if (model >= 0 && model <= 3) /* known models */ + cputype = PMC_CPU_INTEL_PIV; + break; + } + + if ((int) cputype == -1) { + printf("pmc: Unknown Intel CPU.\n"); + return NULL; + } + + MALLOC(pmc_mdep, struct pmc_mdep *, sizeof(struct pmc_mdep), + M_PMC, M_WAITOK|M_ZERO); + + pmc_mdep->pmd_cputype = cputype; + pmc_mdep->pmd_nclass = 2; + pmc_mdep->pmd_classes[0] = PMC_CLASS_TSC; + pmc_mdep->pmd_nclasspmcs[0] = 1; + + error = 0; + + switch (cputype) { + + /* + * Intel Pentium 4 Processors + */ + + case PMC_CPU_INTEL_PIV: + error = pmc_initialize_p4(pmc_mdep); + break; + + /* + * P6 Family Processors + */ + + case PMC_CPU_INTEL_P6: + case PMC_CPU_INTEL_CL: + case PMC_CPU_INTEL_PII: + case PMC_CPU_INTEL_PIII: + case PMC_CPU_INTEL_PM: + + error = pmc_initialize_p6(pmc_mdep); + break; + + /* + * Intel Pentium PMCs. + */ + + case PMC_CPU_INTEL_P5: + error = pmc_initialize_p5(pmc_mdep); + break; + + default: + KASSERT(0,("[intel,%d] Unknown CPU type", __LINE__)); + } + + if (error) { + FREE(pmc_mdep, M_PMC); + pmc_mdep = NULL; + } + + return pmc_mdep; +} |
