X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/5d5c5d0d5b79ade9a973d55186ffda2638ba2b6e..22ba694c5857e62b5a553b1505dcf2e509177f28:/osfmk/i386/cpuid.c diff --git a/osfmk/i386/cpuid.c b/osfmk/i386/cpuid.c index adcfa5608..fb171c4dc 100644 --- a/osfmk/i386/cpuid.c +++ b/osfmk/i386/cpuid.c @@ -1,337 +1,268 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2012 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. The rights granted to you under the - * License may not be used to create, or enable the creation or - * redistribution of, unlawful or unlicensed copies of an Apple operating - * system, or to circumvent, violate, or enable the circumvention or - * violation of, any terms of an Apple operating system software license - * agreement. - * - * Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, + * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and * limitations under the License. - * - * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ #include -#include +#include #include -#include "cpuid.h" -#if MACH_KDB -#include -#include -#include -#include -#include -#include -#include -#include +#include + +static boolean_t cpuid_dbg +#if DEBUG + = TRUE; +#else + = FALSE; #endif +#define DBG(x...) \ + do { \ + if (cpuid_dbg) \ + kprintf(x); \ + } while (0) \ #define min(a,b) ((a) < (b) ? (a) : (b)) #define quad(hi,lo) (((uint64_t)(hi)) << 32 | (lo)) -#define bit(n) (1UL << (n)) -#define bitmask(h,l) ((bit(h)|(bit(h)-1)) & ~(bit(l)-1)) -#define bitfield(x,h,l) (((x) & bitmask(h,l)) >> l) +/* Only for 32bit values */ +#define bit32(n) (1U << (n)) +#define bitmask32(h,l) ((bit32(h)|(bit32(h)-1)) & ~(bit32(l)-1)) +#define bitfield32(x,h,l) ((((x) & bitmask32(h,l)) >> l)) /* - * CPU identification routines. - * - * Note that this code assumes a processor that supports the - * 'cpuid' instruction. + * Leaf 2 cache descriptor encodings. */ +typedef enum { + _NULL_, /* NULL (empty) descriptor */ + CACHE, /* Cache */ + TLB, /* TLB */ + STLB, /* Shared second-level unified TLB */ + PREFETCH /* Prefetch size */ +} cpuid_leaf2_desc_type_t; + +typedef enum { + NA, /* Not Applicable */ + FULLY, /* Fully-associative */ + TRACE, /* Trace Cache (P4 only) */ + INST, /* Instruction TLB */ + DATA, /* Data TLB */ + DATA0, /* Data TLB, 1st level */ + DATA1, /* Data TLB, 2nd level */ + L1, /* L1 (unified) cache */ + L1_INST, /* L1 Instruction cache */ + L1_DATA, /* L1 Data cache */ + L2, /* L2 (unified) cache */ + L3, /* L3 (unified) cache */ + L2_2LINESECTOR, /* L2 (unified) cache with 2 lines per sector */ + L3_2LINESECTOR, /* L3(unified) cache with 2 lines per sector */ + SMALL, /* Small page TLB */ + LARGE, /* Large page TLB */ + BOTH /* Small and Large page TLB */ +} cpuid_leaf2_qualifier_t; + +typedef struct cpuid_cache_descriptor { + uint8_t value; /* descriptor code */ + uint8_t type; /* cpuid_leaf2_desc_type_t */ + uint8_t level; /* level of cache/TLB hierachy */ + uint8_t ways; /* wayness of cache */ + uint16_t size; /* cachesize or TLB pagesize */ + uint16_t entries; /* number of TLB entries or linesize */ +} cpuid_cache_descriptor_t; -static unsigned int cpuid_maxcpuid; - -static i386_cpu_info_t cpuid_cpu_info; - -uint32_t cpuid_feature; /* XXX obsolescent for compat */ +/* + * These multipliers are used to encode 1*K .. 64*M in a 16 bit size field + */ +#define K (1) +#define M (1024) /* - * We only identify Intel CPUs here. Adding support - * for others would be straightforward. + * Intel cache descriptor table: */ -static void set_cpu_generic(i386_cpu_info_t *); -static void set_cpu_intel(i386_cpu_info_t *); -static void set_cpu_amd(i386_cpu_info_t *); -static void set_cpu_nsc(i386_cpu_info_t *); -static void set_cpu_unknown(i386_cpu_info_t *); - -struct { - const char *vendor; - void (* func)(i386_cpu_info_t *); -} cpu_vendors[] = { - {CPUID_VID_INTEL, set_cpu_intel}, - {CPUID_VID_AMD, set_cpu_amd}, - {CPUID_VID_NSC, set_cpu_nsc}, - {0, set_cpu_unknown} +static cpuid_cache_descriptor_t intel_cpuid_leaf2_descriptor_table[] = { +// ------------------------------------------------------- +// value type level ways size entries +// ------------------------------------------------------- + { 0x00, _NULL_, NA, NA, NA, NA }, + { 0x01, TLB, INST, 4, SMALL, 32 }, + { 0x02, TLB, INST, FULLY, LARGE, 2 }, + { 0x03, TLB, DATA, 4, SMALL, 64 }, + { 0x04, TLB, DATA, 4, LARGE, 8 }, + { 0x05, TLB, DATA1, 4, LARGE, 32 }, + { 0x06, CACHE, L1_INST, 4, 8*K, 32 }, + { 0x08, CACHE, L1_INST, 4, 16*K, 32 }, + { 0x09, CACHE, L1_INST, 4, 32*K, 64 }, + { 0x0A, CACHE, L1_DATA, 2, 8*K, 32 }, + { 0x0B, TLB, INST, 4, LARGE, 4 }, + { 0x0C, CACHE, L1_DATA, 4, 16*K, 32 }, + { 0x0D, CACHE, L1_DATA, 4, 16*K, 64 }, + { 0x0E, CACHE, L1_DATA, 6, 24*K, 64 }, + { 0x21, CACHE, L2, 8, 256*K, 64 }, + { 0x22, CACHE, L3_2LINESECTOR, 4, 512*K, 64 }, + { 0x23, CACHE, L3_2LINESECTOR, 8, 1*M, 64 }, + { 0x25, CACHE, L3_2LINESECTOR, 8, 2*M, 64 }, + { 0x29, CACHE, L3_2LINESECTOR, 8, 4*M, 64 }, + { 0x2C, CACHE, L1_DATA, 8, 32*K, 64 }, + { 0x30, CACHE, L1_INST, 8, 32*K, 64 }, + { 0x40, CACHE, L2, NA, 0, NA }, + { 0x41, CACHE, L2, 4, 128*K, 32 }, + { 0x42, CACHE, L2, 4, 256*K, 32 }, + { 0x43, CACHE, L2, 4, 512*K, 32 }, + { 0x44, CACHE, L2, 4, 1*M, 32 }, + { 0x45, CACHE, L2, 4, 2*M, 32 }, + { 0x46, CACHE, L3, 4, 4*M, 64 }, + { 0x47, CACHE, L3, 8, 8*M, 64 }, + { 0x48, CACHE, L2, 12, 3*M, 64 }, + { 0x49, CACHE, L2, 16, 4*M, 64 }, + { 0x4A, CACHE, L3, 12, 6*M, 64 }, + { 0x4B, CACHE, L3, 16, 8*M, 64 }, + { 0x4C, CACHE, L3, 12, 12*M, 64 }, + { 0x4D, CACHE, L3, 16, 16*M, 64 }, + { 0x4E, CACHE, L2, 24, 6*M, 64 }, + { 0x4F, TLB, INST, NA, SMALL, 32 }, + { 0x50, TLB, INST, NA, BOTH, 64 }, + { 0x51, TLB, INST, NA, BOTH, 128 }, + { 0x52, TLB, INST, NA, BOTH, 256 }, + { 0x55, TLB, INST, FULLY, BOTH, 7 }, + { 0x56, TLB, DATA0, 4, LARGE, 16 }, + { 0x57, TLB, DATA0, 4, SMALL, 16 }, + { 0x59, TLB, DATA0, FULLY, SMALL, 16 }, + { 0x5A, TLB, DATA0, 4, LARGE, 32 }, + { 0x5B, TLB, DATA, NA, BOTH, 64 }, + { 0x5C, TLB, DATA, NA, BOTH, 128 }, + { 0x5D, TLB, DATA, NA, BOTH, 256 }, + { 0x60, CACHE, L1, 16*K, 8, 64 }, + { 0x61, CACHE, L1, 4, 8*K, 64 }, + { 0x62, CACHE, L1, 4, 16*K, 64 }, + { 0x63, CACHE, L1, 4, 32*K, 64 }, + { 0x70, CACHE, TRACE, 8, 12*K, NA }, + { 0x71, CACHE, TRACE, 8, 16*K, NA }, + { 0x72, CACHE, TRACE, 8, 32*K, NA }, + { 0x76, TLB, INST, NA, BOTH, 8 }, + { 0x78, CACHE, L2, 4, 1*M, 64 }, + { 0x79, CACHE, L2_2LINESECTOR, 8, 128*K, 64 }, + { 0x7A, CACHE, L2_2LINESECTOR, 8, 256*K, 64 }, + { 0x7B, CACHE, L2_2LINESECTOR, 8, 512*K, 64 }, + { 0x7C, CACHE, L2_2LINESECTOR, 8, 1*M, 64 }, + { 0x7D, CACHE, L2, 8, 2*M, 64 }, + { 0x7F, CACHE, L2, 2, 512*K, 64 }, + { 0x80, CACHE, L2, 8, 512*K, 64 }, + { 0x82, CACHE, L2, 8, 256*K, 32 }, + { 0x83, CACHE, L2, 8, 512*K, 32 }, + { 0x84, CACHE, L2, 8, 1*M, 32 }, + { 0x85, CACHE, L2, 8, 2*M, 32 }, + { 0x86, CACHE, L2, 4, 512*K, 64 }, + { 0x87, CACHE, L2, 8, 1*M, 64 }, + { 0xB0, TLB, INST, 4, SMALL, 128 }, + { 0xB1, TLB, INST, 4, LARGE, 8 }, + { 0xB2, TLB, INST, 4, SMALL, 64 }, + { 0xB3, TLB, DATA, 4, SMALL, 128 }, + { 0xB4, TLB, DATA1, 4, SMALL, 256 }, + { 0xB5, TLB, DATA1, 8, SMALL, 64 }, + { 0xB6, TLB, DATA1, 8, SMALL, 128 }, + { 0xBA, TLB, DATA1, 4, BOTH, 64 }, + { 0xC1, STLB, DATA1, 8, SMALL, 1024}, + { 0xCA, STLB, DATA1, 4, SMALL, 512 }, + { 0xD0, CACHE, L3, 4, 512*K, 64 }, + { 0xD1, CACHE, L3, 4, 1*M, 64 }, + { 0xD2, CACHE, L3, 4, 2*M, 64 }, + { 0xD3, CACHE, L3, 4, 4*M, 64 }, + { 0xD4, CACHE, L3, 4, 8*M, 64 }, + { 0xD6, CACHE, L3, 8, 1*M, 64 }, + { 0xD7, CACHE, L3, 8, 2*M, 64 }, + { 0xD8, CACHE, L3, 8, 4*M, 64 }, + { 0xD9, CACHE, L3, 8, 8*M, 64 }, + { 0xDA, CACHE, L3, 8, 12*M, 64 }, + { 0xDC, CACHE, L3, 12, 1536*K, 64 }, + { 0xDD, CACHE, L3, 12, 3*M, 64 }, + { 0xDE, CACHE, L3, 12, 6*M, 64 }, + { 0xDF, CACHE, L3, 12, 12*M, 64 }, + { 0xE0, CACHE, L3, 12, 18*M, 64 }, + { 0xE2, CACHE, L3, 16, 2*M, 64 }, + { 0xE3, CACHE, L3, 16, 4*M, 64 }, + { 0xE4, CACHE, L3, 16, 8*M, 64 }, + { 0xE5, CACHE, L3, 16, 16*M, 64 }, + { 0xE6, CACHE, L3, 16, 24*M, 64 }, + { 0xF0, PREFETCH, NA, NA, 64, NA }, + { 0xF1, PREFETCH, NA, NA, 128, NA }, + { 0xFF, CACHE, NA, NA, 0, NA } }; +#define INTEL_LEAF2_DESC_NUM (sizeof(intel_cpuid_leaf2_descriptor_table) / \ + sizeof(cpuid_cache_descriptor_t)) -void -cpuid_get_info(i386_cpu_info_t *info_p) +static inline cpuid_cache_descriptor_t * +cpuid_leaf2_find(uint8_t value) { - uint32_t cpuid_result[4]; - int i; - - bzero((void *)info_p, sizeof(i386_cpu_info_t)); - - /* do cpuid 0 to get vendor */ - do_cpuid(0, cpuid_result); - cpuid_maxcpuid = cpuid_result[eax]; - bcopy((char *)&cpuid_result[ebx], &info_p->cpuid_vendor[0], 4); /* ug */ - bcopy((char *)&cpuid_result[ecx], &info_p->cpuid_vendor[8], 4); - bcopy((char *)&cpuid_result[edx], &info_p->cpuid_vendor[4], 4); - info_p->cpuid_vendor[12] = 0; + unsigned int i; - /* look up vendor */ - for (i = 0; ; i++) { - if ((cpu_vendors[i].vendor == 0) || - (!strcmp(cpu_vendors[i].vendor, info_p->cpuid_vendor))) { - cpu_vendors[i].func(info_p); - break; - } - } + for (i = 0; i < INTEL_LEAF2_DESC_NUM; i++) + if (intel_cpuid_leaf2_descriptor_table[i].value == value) + return &intel_cpuid_leaf2_descriptor_table[i]; + return NULL; } /* - * Cache descriptor table. Each row has the form: - * (descriptor_value, cache, size, linesize, - * description) - * Note: the CACHE_DESC macro does not expand description text in the kernel. + * CPU identification routines. */ -static cpuid_cache_desc_t cpuid_cache_desc_tab[] = { -CACHE_DESC(CPUID_CACHE_ITLB_4K, Lnone, 0, 0, \ - "Instruction TLB, 4K, pages 4-way set associative, 64 entries"), -CACHE_DESC(CPUID_CACHE_ITLB_4M, Lnone, 0, 0, \ - "Instruction TLB, 4M, pages 4-way set associative, 2 entries"), -CACHE_DESC(CPUID_CACHE_DTLB_4K, Lnone, 0, 0, \ - "Data TLB, 4K pages, 4-way set associative, 64 entries"), -CACHE_DESC(CPUID_CACHE_DTLB_4M, Lnone, 0, 0, \ - "Data TLB, 4M pages, 4-way set associative, 8 entries"), -CACHE_DESC(CPUID_CACHE_ITLB_64, Lnone, 0, 0, \ - "Instruction TLB, 4K and 2M or 4M pages, 64 entries"), -CACHE_DESC(CPUID_CACHE_ITLB_128, Lnone, 0, 0, \ - "Instruction TLB, 4K and 2M or 4M pages, 128 entries"), -CACHE_DESC(CPUID_CACHE_ITLB_256, Lnone, 0, 0, \ - "Instruction TLB, 4K and 2M or 4M pages, 256 entries"), -CACHE_DESC(CPUID_CACHE_DTLB_64, Lnone, 0, 0, \ - "Data TLB, 4K and 4M pages, 64 entries"), -CACHE_DESC(CPUID_CACHE_DTLB_128, Lnone, 0, 0, \ - "Data TLB, 4K and 4M pages, 128 entries"), -CACHE_DESC(CPUID_CACHE_DTLB_256, Lnone, 0, 0, \ - "Data TLB, 4K and 4M pages, 256 entries"), -CACHE_DESC(CPUID_CACHE_ITLB_128_4, Lnone, 0, 0, \ - "Instruction TLB, 4K pages, 4-way set associative, 128 entries"), -CACHE_DESC(CPUID_CACHE_DTLB_128_4, Lnone, 0, 0, \ - "Data TLB, 4K pages, 4-way set associative, 128 entries"), -CACHE_DESC(CPUID_CACHE_ICACHE_8K, L1I, 8*1024, 32, \ - "Instruction L1 cache, 8K, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_DCACHE_8K, L1D, 8*1024, 32, \ - "Data L1 cache, 8K, 2-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_ICACHE_16K, L1I, 16*1024, 32, \ - "Instruction L1 cache, 16K, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_DCACHE_16K, L1D, 16*1024, 32, \ - "Data L1 cache, 16K, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_DCACHE_8K_64, L1D, 8*1024, 64, \ - "Data L1 cache, 8K, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_DCACHE_16K_64, L1D, 16*1024, 64, \ - "Data L1 cache, 16K, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_DCACHE_32K_64, L1D, 32*1024, 64, \ - "Data L1 cache, 32K, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_DCACHE_32K, L1D, 32*1024, 64, \ - "Data L1 cache, 32K, 8-way set assocative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_ICACHE_32K, L1I, 32*1024, 64, \ - "Instruction L1 cache, 32K, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_DCACHE_16K_8, L1D, 16*1024, 64, \ - "Data L1 cache, 16K, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_TRACE_12K, L1I, 12*1024, 64, \ - "Trace cache, 12K-uop, 8-way set associative"), -CACHE_DESC(CPUID_CACHE_TRACE_16K, L1I, 16*1024, 64, \ - "Trace cache, 16K-uop, 8-way set associative"), -CACHE_DESC(CPUID_CACHE_TRACE_32K, L1I, 32*1024, 64, \ - "Trace cache, 32K-uop, 8-way set associative"), -CACHE_DESC(CPUID_CACHE_UCACHE_128K, L2U, 128*1024, 32, \ - "Unified L2 cache, 128K, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_256K, L2U, 128*1024, 32, \ - "Unified L2 cache, 256K, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_512K, L2U, 512*1024, 32, \ - "Unified L2 cache, 512K, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_1M, L2U, 1*1024*1024, 32, \ - "Unified L2 cache, 1M, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_2M, L2U, 2*1024*1024, 32, \ - "Unified L2 cache, 2M, 4-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_4M, L2U, 4*1024*1024, 64, \ - "Unified L2 cache, 4M, 16-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_128K_64, L2U, 128*1024, 64, \ - "Unified L2 cache, 128K, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_256K_64, L2U, 256*1024, 64, \ - "Unified L2 cache, 256K, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_512K_64, L2U, 512*1024, 64, \ - "Unified L2 cache, 512K, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_1M_64, L2U, 1*1024*1024, 64, \ - "Unified L2 cache, 1M, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_256K_32, L2U, 256*1024, 32, \ - "Unified L2 cache, 256K, 8-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_512K_32, L2U, 512*1024, 32, \ - "Unified L2 cache, 512K, 8-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_1M_32, L2U, 1*1024*1024, 32, \ - "Unified L2 cache, 1M, 8-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_2M_32, L2U, 2*1024*1024, 32, \ - "Unified L2 cache, 2M, 8-way set associative, 32byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_1M_64_4, L2U, 1*1024*1024, 64, \ - "Unified L2 cache, 1M, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_2M_64, L2U, 2*1024*1024, 64, \ - "Unified L2 cache, 2M, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_512K_64_2,L2U, 512*1024, 64, \ - "Unified L2 cache, 512K, 2-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_512K_64_4,L2U, 512*1024, 64, \ - "Unified L2 cache, 512K, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_1M_64_8, L2U, 1*1024*1024, 64, \ - "Unified L2 cache, 1M, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_128K_S4, L2U, 128*1024, 64, \ - "Unified L2 sectored cache, 128K, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_128K_S2, L2U, 128*1024, 64, \ - "Unified L2 sectored cache, 128K, 2-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_UCACHE_256K_S4, L2U, 256*1024, 64, \ - "Unified L2 sectored cache, 256K, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_L3CACHE_512K, L3U, 512*1024, 64, \ - "Unified L3 cache, 512K, 4-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_L3CACHE_1M, L3U, 1*1024*1024, 64, \ - "Unified L3 cache, 1M, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_L3CACHE_2M, L3U, 2*1024*1024, 64, \ - "Unified L3 cache, 2M, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_L3CACHE_4M, L3U, 4*1024*1024, 64, \ - "Unified L3 cache, 4M, 8-way set associative, 64byte line size"), -CACHE_DESC(CPUID_CACHE_PREFETCH_64, Lnone, 0, 0, \ - "64-Byte Prefetching"), -CACHE_DESC(CPUID_CACHE_PREFETCH_128, Lnone, 0, 0, \ - "128-Byte Prefetching"), -CACHE_DESC(CPUID_CACHE_NOCACHE, Lnone, 0, 0, \ - "No L2 cache or, if valid L2 cache, no L3 cache"), -CACHE_DESC(CPUID_CACHE_NULL, Lnone, 0, 0, \ - (char *)0), -}; -static const char * get_intel_model_string( i386_cpu_info_t * info_p, cpu_type_t* type, cpu_subtype_t* subtype) +static i386_cpu_info_t cpuid_cpu_info; +static i386_cpu_info_t *cpuid_cpu_infop = NULL; + +static void cpuid_fn(uint32_t selector, uint32_t *result) { - *type = CPU_TYPE_X86; - *subtype = CPU_SUBTYPE_X86_ARCH1; - - /* check for brand id string */ - switch(info_p->cpuid_brand) { - case CPUID_BRAND_UNSUPPORTED: - /* brand ID not supported; use alternate method. */ - switch(info_p->cpuid_family) { - case CPUID_FAMILY_486: - return "Intel 486"; - case CPUID_FAMILY_586: - return "Intel Pentium"; - case CPUID_FAMILY_686: - switch(info_p->cpuid_model) { - case CPUID_MODEL_P6: - return "Intel Pentium Pro"; - case CPUID_MODEL_PII: - return "Intel Pentium II"; - case CPUID_MODEL_P65: - case CPUID_MODEL_P66: - return "Intel Celeron"; - case CPUID_MODEL_P67: - case CPUID_MODEL_P68: - case CPUID_MODEL_P6A: - case CPUID_MODEL_P6B: - return "Intel Pentium III"; - case CPUID_MODEL_PM9: - case CPUID_MODEL_PMD: - return "Intel Pentium M"; - default: - return "Unknown Intel P6 Family"; - } - case CPUID_FAMILY_EXTENDED: - switch (info_p->cpuid_extfamily) { - case CPUID_EXTFAMILY_PENTIUM4: - *subtype = CPU_SUBTYPE_PENTIUM_4; - return "Intel Pentium 4"; - default: - return "Unknown Intel Extended Family"; - } - default: - return "Unknown Intel Family"; - } - break; - case CPUID_BRAND_CELERON_1: - case CPUID_BRAND_CELERON_A: - case CPUID_BRAND_CELERON_14: - return "Intel Celeron"; - case CPUID_BRAND_PENTIUM_III_2: - case CPUID_BRAND_PENTIUM_III_4: - return "Pentium III"; - case CPUID_BRAND_PIII_XEON: - if (info_p->cpuid_signature == 0x6B1) { - return "Intel Celeron"; - } else { - return "Intel Pentium III Xeon"; - } - case CPUID_BRAND_PENTIUM_III_M: - return "Mobile Intel Pentium III-M"; - case CPUID_BRAND_M_CELERON_7: - case CPUID_BRAND_M_CELERON_F: - case CPUID_BRAND_M_CELERON_13: - case CPUID_BRAND_M_CELERON_17: - return "Mobile Intel Celeron"; - case CPUID_BRAND_PENTIUM4_8: - case CPUID_BRAND_PENTIUM4_9: - *subtype = CPU_SUBTYPE_PENTIUM_4; - return "Intel Pentium 4"; - case CPUID_BRAND_XEON: - return "Intel Xeon"; - case CPUID_BRAND_XEON_MP: - return "Intel Xeon MP"; - case CPUID_BRAND_PENTIUM4_M: - if (info_p->cpuid_signature == 0xF13) { - return "Intel Xeon"; - } else { - *subtype = CPU_SUBTYPE_PENTIUM_4; - return "Mobile Intel Pentium 4"; - } - case CPUID_BRAND_CELERON_M: - return "Intel Celeron M"; - case CPUID_BRAND_PENTIUM_M: - return "Intel Pentium M"; - case CPUID_BRAND_MOBILE_15: - case CPUID_BRAND_MOBILE_17: - return "Mobile Intel"; - } - return "Unknown Intel"; + do_cpuid(selector, result); + DBG("cpuid_fn(0x%08x) eax:0x%08x ebx:0x%08x ecx:0x%08x edx:0x%08x\n", + selector, result[0], result[1], result[2], result[3]); } -static void set_intel_cache_info( i386_cpu_info_t * info_p ) +static const char *cache_type_str[LCACHE_MAX] = { + "Lnone", "L1I", "L1D", "L2U", "L3U" +}; + +/* this function is Intel-specific */ +static void +cpuid_set_cache_info( i386_cpu_info_t * info_p ) { uint32_t cpuid_result[4]; - uint32_t l1d_cache_linesize = 0; + uint32_t reg[4]; + uint32_t index; + uint32_t linesizes[LCACHE_MAX]; unsigned int i; unsigned int j; + boolean_t cpuid_deterministic_supported = FALSE; + + DBG("cpuid_set_cache_info(%p)\n", info_p); - /* get processor cache descriptor info */ - do_cpuid(2, cpuid_result); + bzero( linesizes, sizeof(linesizes) ); + + /* Get processor cache descriptor info using leaf 2. We don't use + * this internally, but must publish it for KEXTs. + */ + cpuid_fn(2, cpuid_result); for (j = 0; j < 4; j++) { if ((cpuid_result[j] >> 31) == 1) /* bit31 is validity */ continue; @@ -341,7 +272,7 @@ static void set_intel_cache_info( i386_cpu_info_t * info_p ) for (i = 1; i < info_p->cache_info[0]; i++) { if (i*16 > sizeof(info_p->cache_info)) break; - do_cpuid(2, cpuid_result); + cpuid_fn(2, cpuid_result); for (j = 0; j < 4; j++) { if ((cpuid_result[j] >> 31) == 1) continue; @@ -350,386 +281,689 @@ static void set_intel_cache_info( i386_cpu_info_t * info_p ) } } - /* decode the descriptors looking for L1/L2/L3 size info */ - for (i = 1; i < sizeof(info_p->cache_info); i++) { - cpuid_cache_desc_t *descp; - uint8_t desc = info_p->cache_info[i]; - - if (desc == CPUID_CACHE_NULL) - continue; - for (descp = cpuid_cache_desc_tab; - descp->value != CPUID_CACHE_NULL; descp++) { - if (descp->value != desc) - continue; - info_p->cache_size[descp->type] = descp->size; - if (descp->type == L2U) - info_p->cache_linesize = descp->linesize; - if (descp->type == L1D) - l1d_cache_linesize = descp->linesize; + /* + * Get cache info using leaf 4, the "deterministic cache parameters." + * Most processors Mac OS X supports implement this flavor of CPUID. + * Loop over each cache on the processor. + */ + cpuid_fn(0, cpuid_result); + if (cpuid_result[eax] >= 4) + cpuid_deterministic_supported = TRUE; + + for (index = 0; cpuid_deterministic_supported; index++) { + cache_type_t type = Lnone; + uint32_t cache_type; + uint32_t cache_level; + uint32_t cache_sharing; + uint32_t cache_linesize; + uint32_t cache_sets; + uint32_t cache_associativity; + uint32_t cache_size; + uint32_t cache_partitions; + uint32_t colors; + + reg[eax] = 4; /* cpuid request 4 */ + reg[ecx] = index; /* index starting at 0 */ + cpuid(reg); + DBG("cpuid(4) index=%d eax=0x%x\n", index, reg[eax]); + cache_type = bitfield32(reg[eax], 4, 0); + if (cache_type == 0) + break; /* no more caches */ + cache_level = bitfield32(reg[eax], 7, 5); + cache_sharing = bitfield32(reg[eax], 25, 14) + 1; + info_p->cpuid_cores_per_package + = bitfield32(reg[eax], 31, 26) + 1; + cache_linesize = bitfield32(reg[ebx], 11, 0) + 1; + cache_partitions = bitfield32(reg[ebx], 21, 12) + 1; + cache_associativity = bitfield32(reg[ebx], 31, 22) + 1; + cache_sets = bitfield32(reg[ecx], 31, 0) + 1; + + /* Map type/levels returned by CPUID into cache_type_t */ + switch (cache_level) { + case 1: + type = cache_type == 1 ? L1D : + cache_type == 2 ? L1I : + Lnone; + break; + case 2: + type = cache_type == 3 ? L2U : + Lnone; break; + case 3: + type = cache_type == 3 ? L3U : + Lnone; + break; + default: + type = Lnone; } + + /* The total size of a cache is: + * ( linesize * sets * associativity * partitions ) + */ + if (type != Lnone) { + cache_size = cache_linesize * cache_sets * + cache_associativity * cache_partitions; + info_p->cache_size[type] = cache_size; + info_p->cache_sharing[type] = cache_sharing; + info_p->cache_partitions[type] = cache_partitions; + linesizes[type] = cache_linesize; + + DBG(" cache_size[%s] : %d\n", + cache_type_str[type], cache_size); + DBG(" cache_sharing[%s] : %d\n", + cache_type_str[type], cache_sharing); + DBG(" cache_partitions[%s]: %d\n", + cache_type_str[type], cache_partitions); + + /* + * Overwrite associativity determined via + * CPUID.0x80000006 -- this leaf is more + * accurate + */ + if (type == L2U) + info_p->cpuid_cache_L2_associativity = cache_associativity; + + /* Compute the number of page colors for this cache, + * which is: + * ( linesize * sets ) / page_size + * + * To help visualize this, consider two views of a + * physical address. To the cache, it is composed + * of a line offset, a set selector, and a tag. + * To VM, it is composed of a page offset, a page + * color, and other bits in the pageframe number: + * + * +-----------------+---------+--------+ + * cache: | tag | set | offset | + * +-----------------+---------+--------+ + * + * +-----------------+-------+----------+ + * VM: | don't care | color | pg offset| + * +-----------------+-------+----------+ + * + * The color is those bits in (set+offset) not covered + * by the page offset. + */ + colors = ( cache_linesize * cache_sets ) >> 12; + + if ( colors > vm_cache_geometry_colors ) + vm_cache_geometry_colors = colors; + } + } + DBG(" vm_cache_geometry_colors: %d\n", vm_cache_geometry_colors); + + /* + * If deterministic cache parameters are not available, use + * something else + */ + if (info_p->cpuid_cores_per_package == 0) { + info_p->cpuid_cores_per_package = 1; + + /* cpuid define in 1024 quantities */ + info_p->cache_size[L2U] = info_p->cpuid_cache_size * 1024; + info_p->cache_sharing[L2U] = 1; + info_p->cache_partitions[L2U] = 1; + + linesizes[L2U] = info_p->cpuid_cache_linesize; + + DBG(" cache_size[L2U] : %d\n", + info_p->cache_size[L2U]); + DBG(" cache_sharing[L2U] : 1\n"); + DBG(" cache_partitions[L2U]: 1\n"); + DBG(" linesizes[L2U] : %d\n", + info_p->cpuid_cache_linesize); } - /* For P-IIIs, L2 could be 256k or 512k but we can't tell */ - if (info_p->cache_size[L2U] == 0 && - info_p->cpuid_family == 0x6 && info_p->cpuid_model == 0xb) { - info_p->cache_size[L2U] = 256*1024; - info_p->cache_linesize = 32; - } - /* If we have no L2 cache, use the L1 data cache line size */ - if (info_p->cache_size[L2U] == 0) - info_p->cache_linesize = l1d_cache_linesize; + + /* + * What linesize to publish? We use the L2 linesize if any, + * else the L1D. + */ + if ( linesizes[L2U] ) + info_p->cache_linesize = linesizes[L2U]; + else if (linesizes[L1D]) + info_p->cache_linesize = linesizes[L1D]; + else panic("no linesize"); + DBG(" cache_linesize : %d\n", info_p->cache_linesize); /* - * Get cache sharing info if available. + * Extract and publish TLB information from Leaf 2 descriptors. */ - do_cpuid(0, cpuid_result); - if (cpuid_result[eax] >= 4) { - uint32_t reg[4]; - uint32_t index; - for (index = 0;; index++) { - /* - * Scan making calls for cpuid with %eax = 4 - * to get info about successive cache levels - * until a null type is returned. - */ - cache_type_t type = Lnone; - uint32_t cache_type; - uint32_t cache_level; - uint32_t cache_sharing; - - reg[eax] = 4; /* cpuid request 4 */ - reg[ecx] = index; /* index starting at 0 */ - cpuid(reg); -//kprintf("cpuid(4) index=%d eax=%p\n", index, reg[eax]); - cache_type = bitfield(reg[eax], 4, 0); - if (cache_type == 0) - break; /* done with cache info */ - cache_level = bitfield(reg[eax], 7, 5); - cache_sharing = bitfield(reg[eax], 25, 14); - info_p->cpuid_cores_per_package = - bitfield(reg[eax], 31, 26) + 1; - switch (cache_level) { - case 1: - type = cache_type == 1 ? L1D : - cache_type == 2 ? L1I : - Lnone; + DBG(" %ld leaf2 descriptors:\n", sizeof(info_p->cache_info)); + for (i = 1; i < sizeof(info_p->cache_info); i++) { + cpuid_cache_descriptor_t *descp; + int id; + int level; + int page; + + DBG(" 0x%02x", info_p->cache_info[i]); + descp = cpuid_leaf2_find(info_p->cache_info[i]); + if (descp == NULL) + continue; + + switch (descp->type) { + case TLB: + page = (descp->size == SMALL) ? TLB_SMALL : TLB_LARGE; + /* determine I or D: */ + switch (descp->level) { + case INST: + id = TLB_INST; + break; + case DATA: + case DATA0: + case DATA1: + id = TLB_DATA; break; - case 2: - type = cache_type == 3 ? L2U : - Lnone; + default: + continue; + } + /* determine level: */ + switch (descp->level) { + case DATA1: + level = 1; break; - case 3: - type = cache_type == 3 ? L3U : - Lnone; + default: + level = 0; } - if (type != Lnone) - info_p->cache_sharing[type] = cache_sharing + 1; - } + info_p->cpuid_tlb[id][page][level] = descp->entries; + break; + case STLB: + info_p->cpuid_stlb = descp->entries; + } } -} - -static void set_cpu_intel( i386_cpu_info_t * info_p ) -{ - set_cpu_generic(info_p); - set_intel_cache_info(info_p); - info_p->cpuid_model_string = get_intel_model_string(info_p, &info_p->cpuid_cpu_type, &info_p->cpuid_cpu_subtype); -} - -static const char * get_amd_model_string( i386_cpu_info_t * info_p, cpu_type_t* type, cpu_subtype_t* subtype ) -{ - *type = CPU_TYPE_X86; - *subtype = CPU_SUBTYPE_X86_ARCH1; - - /* check for brand id string */ - switch (info_p->cpuid_family) - { - case CPUID_FAMILY_486: - switch (info_p->cpuid_model) { - case CPUID_MODEL_AM486_DX: - case CPUID_MODEL_AM486_DX2: - case CPUID_MODEL_AM486_DX2WB: - case CPUID_MODEL_AM486_DX4: - case CPUID_MODEL_AM486_DX4WB: - return "Am486"; - case CPUID_MODEL_AM486_5X86: - case CPUID_MODEL_AM486_5X86WB: - return "Am5x86"; - } - break; - case CPUID_FAMILY_586: - switch (info_p->cpuid_model) { - case CPUID_MODEL_K5M0: - case CPUID_MODEL_K5M1: - case CPUID_MODEL_K5M2: - case CPUID_MODEL_K5M3: - return "AMD-K5"; - case CPUID_MODEL_K6M6: - case CPUID_MODEL_K6M7: - return "AMD-K6"; - case CPUID_MODEL_K6_2: - return "AMD-K6-2"; - case CPUID_MODEL_K6_III: - return "AMD-K6-III"; - } - break; - case CPUID_FAMILY_686: - switch (info_p->cpuid_model) { - case CPUID_MODEL_ATHLON_M1: - case CPUID_MODEL_ATHLON_M2: - case CPUID_MODEL_ATHLON_M4: - case CPUID_MODEL_ATHLON_M6: - case CPUID_MODEL_ATHLON_M8: - case CPUID_MODEL_ATHLON_M10: - return "AMD Athlon"; - case CPUID_MODEL_DURON_M3: - case CPUID_MODEL_DURON_M7: - return "AMD Duron"; - default: - return "Unknown AMD Athlon"; - } - case CPUID_FAMILY_EXTENDED: - switch (info_p->cpuid_model) { - case CPUID_MODEL_ATHLON64: - return "AMD Athlon 64"; - case CPUID_MODEL_OPTERON: - return "AMD Opteron"; - default: - return "Unknown AMD-64"; - } - } - return "Unknown AMD"; -} - -static void set_amd_cache_info( i386_cpu_info_t * info_p ) -{ - uint32_t cpuid_result[4]; - - /* It would make sense to fill in info_p->cache_info with complete information - * on the TLBs and data cache associativity, lines, etc, either by mapping - * to the Intel tags (if possible), or replacing cache_info with a generic - * mechanism. But right now, nothing makes use of that information (that I know - * of). - */ - - /* L1 Cache and TLB Information */ - do_cpuid(0x80000005, cpuid_result); - - /* EAX: TLB Information for 2-Mbyte and 4-MByte Pages */ - /* (ignore) */ - - /* EBX: TLB Information for 4-Kbyte Pages */ - /* (ignore) */ - - /* ECX: L1 Data Cache Information */ - info_p->cache_size[L1D] = ((cpuid_result[ecx] >> 24) & 0xFF) * 1024; - info_p->cache_linesize = (cpuid_result[ecx] & 0xFF); - - /* EDX: L1 Instruction Cache Information */ - info_p->cache_size[L1I] = ((cpuid_result[edx] >> 24) & 0xFF) * 1024; - - /* L2 Cache Information */ - do_cpuid(0x80000006, cpuid_result); - - /* EAX: L2 TLB Information for 2-Mbyte and 4-Mbyte Pages */ - /* (ignore) */ - - /* EBX: L2 TLB Information for 4-Kbyte Pages */ - /* (ignore) */ - - /* ECX: L2 Cache Information */ - info_p->cache_size[L2U] = ((cpuid_result[ecx] >> 16) & 0xFFFF) * 1024; - if (info_p->cache_size[L2U] > 0) - info_p->cache_linesize = cpuid_result[ecx] & 0xFF; -} - -static void set_cpu_amd( i386_cpu_info_t * info_p ) -{ - set_cpu_generic(info_p); - set_amd_cache_info(info_p); - info_p->cpuid_model_string = get_amd_model_string(info_p, &info_p->cpuid_cpu_type, &info_p->cpuid_cpu_subtype); -} - -static void set_cpu_nsc( i386_cpu_info_t * info_p ) -{ - set_cpu_generic(info_p); - set_amd_cache_info(info_p); - - /* check for brand id string */ - if (info_p->cpuid_family == CPUID_FAMILY_586 && info_p->cpuid_model == CPUID_MODEL_GX1) { - info_p->cpuid_model_string = "AMD Geode GX1"; - } else if (info_p->cpuid_family == CPUID_FAMILY_586 && info_p->cpuid_model == CPUID_MODEL_GX2) { - info_p->cpuid_model_string = "AMD Geode GX"; - } else { - info_p->cpuid_model_string = "Unknown National Semiconductor"; - } - info_p->cpuid_cpu_type = CPU_TYPE_X86; - info_p->cpuid_cpu_subtype = CPU_SUBTYPE_X86_ARCH1; + DBG("\n"); } static void -set_cpu_generic(i386_cpu_info_t *info_p) +cpuid_set_generic_info(i386_cpu_info_t *info_p) { - uint32_t cpuid_result[4]; - uint32_t max_extid; + uint32_t reg[4]; char str[128], *p; + DBG("cpuid_set_generic_info(%p)\n", info_p); + + /* do cpuid 0 to get vendor */ + cpuid_fn(0, reg); + info_p->cpuid_max_basic = reg[eax]; + bcopy((char *)®[ebx], &info_p->cpuid_vendor[0], 4); /* ug */ + bcopy((char *)®[ecx], &info_p->cpuid_vendor[8], 4); + bcopy((char *)®[edx], &info_p->cpuid_vendor[4], 4); + info_p->cpuid_vendor[12] = 0; + /* get extended cpuid results */ - do_cpuid(0x80000000, cpuid_result); - max_extid = cpuid_result[eax]; + cpuid_fn(0x80000000, reg); + info_p->cpuid_max_ext = reg[eax]; /* check to see if we can get brand string */ - if (max_extid >= 0x80000004) { + if (info_p->cpuid_max_ext >= 0x80000004) { /* * The brand string 48 bytes (max), guaranteed to * be NUL terminated. */ - do_cpuid(0x80000002, cpuid_result); - bcopy((char *)cpuid_result, &str[0], 16); - do_cpuid(0x80000003, cpuid_result); - bcopy((char *)cpuid_result, &str[16], 16); - do_cpuid(0x80000004, cpuid_result); - bcopy((char *)cpuid_result, &str[32], 16); + cpuid_fn(0x80000002, reg); + bcopy((char *)reg, &str[0], 16); + cpuid_fn(0x80000003, reg); + bcopy((char *)reg, &str[16], 16); + cpuid_fn(0x80000004, reg); + bcopy((char *)reg, &str[32], 16); for (p = str; *p != '\0'; p++) { if (*p != ' ') break; } - strncpy(info_p->cpuid_brand_string, - p, sizeof(info_p->cpuid_brand_string)-1); - info_p->cpuid_brand_string[sizeof(info_p->cpuid_brand_string)-1] = '\0'; + strlcpy(info_p->cpuid_brand_string, + p, sizeof(info_p->cpuid_brand_string)); - if (!strcmp(info_p->cpuid_brand_string, CPUID_STRING_UNKNOWN)) { + if (!strncmp(info_p->cpuid_brand_string, CPUID_STRING_UNKNOWN, + min(sizeof(info_p->cpuid_brand_string), + strlen(CPUID_STRING_UNKNOWN) + 1))) { /* - * This string means we have a BIOS-programmable brand string, - * and the BIOS couldn't figure out what sort of CPU we have. + * This string means we have a firmware-programmable brand string, + * and the firmware couldn't figure out what sort of CPU we have. */ info_p->cpuid_brand_string[0] = '\0'; } } - /* get processor signature and decode */ - do_cpuid(1, cpuid_result); - info_p->cpuid_signature = cpuid_result[eax]; - info_p->cpuid_stepping = bitfield(cpuid_result[eax], 3, 0); - info_p->cpuid_model = bitfield(cpuid_result[eax], 7, 4); - info_p->cpuid_family = bitfield(cpuid_result[eax], 11, 8); - info_p->cpuid_type = bitfield(cpuid_result[eax], 13, 12); - info_p->cpuid_extmodel = bitfield(cpuid_result[eax], 19, 16); - info_p->cpuid_extfamily = bitfield(cpuid_result[eax], 27, 20); - info_p->cpuid_brand = bitfield(cpuid_result[ebx], 7, 0); - info_p->cpuid_logical_per_package = - bitfield(cpuid_result[ebx], 23, 16); - info_p->cpuid_features = quad(cpuid_result[ecx], cpuid_result[edx]); - - if (max_extid >= 0x80000001) { - do_cpuid(0x80000001, cpuid_result); + /* Get cache and addressing info. */ + if (info_p->cpuid_max_ext >= 0x80000006) { + uint32_t assoc; + cpuid_fn(0x80000006, reg); + info_p->cpuid_cache_linesize = bitfield32(reg[ecx], 7, 0); + assoc = bitfield32(reg[ecx],15,12); + /* + * L2 associativity is encoded, though in an insufficiently + * descriptive fashion, e.g. 24-way is mapped to 16-way. + * Represent a fully associative cache as 0xFFFF. + * Overwritten by associativity as determined via CPUID.4 + * if available. + */ + if (assoc == 6) + assoc = 8; + else if (assoc == 8) + assoc = 16; + else if (assoc == 0xF) + assoc = 0xFFFF; + info_p->cpuid_cache_L2_associativity = assoc; + info_p->cpuid_cache_size = bitfield32(reg[ecx],31,16); + cpuid_fn(0x80000008, reg); + info_p->cpuid_address_bits_physical = + bitfield32(reg[eax], 7, 0); + info_p->cpuid_address_bits_virtual = + bitfield32(reg[eax],15, 8); + } + + /* + * Get processor signature and decode + * and bracket this with the approved procedure for reading the + * the microcode version number a.k.a. signature a.k.a. BIOS ID + */ + wrmsr64(MSR_IA32_BIOS_SIGN_ID, 0); + cpuid_fn(1, reg); + info_p->cpuid_microcode_version = + (uint32_t) (rdmsr64(MSR_IA32_BIOS_SIGN_ID) >> 32); + info_p->cpuid_signature = reg[eax]; + info_p->cpuid_stepping = bitfield32(reg[eax], 3, 0); + info_p->cpuid_model = bitfield32(reg[eax], 7, 4); + info_p->cpuid_family = bitfield32(reg[eax], 11, 8); + info_p->cpuid_type = bitfield32(reg[eax], 13, 12); + info_p->cpuid_extmodel = bitfield32(reg[eax], 19, 16); + info_p->cpuid_extfamily = bitfield32(reg[eax], 27, 20); + info_p->cpuid_brand = bitfield32(reg[ebx], 7, 0); + info_p->cpuid_features = quad(reg[ecx], reg[edx]); + + /* Get "processor flag"; necessary for microcode update matching */ + info_p->cpuid_processor_flag = (rdmsr64(MSR_IA32_PLATFORM_ID)>> 50) & 0x7; + + /* Fold extensions into family/model */ + if (info_p->cpuid_family == 0x0f) + info_p->cpuid_family += info_p->cpuid_extfamily; + if (info_p->cpuid_family == 0x0f || info_p->cpuid_family == 0x06) + info_p->cpuid_model += (info_p->cpuid_extmodel << 4); + + if (info_p->cpuid_features & CPUID_FEATURE_HTT) + info_p->cpuid_logical_per_package = + bitfield32(reg[ebx], 23, 16); + else + info_p->cpuid_logical_per_package = 1; + + if (info_p->cpuid_max_ext >= 0x80000001) { + cpuid_fn(0x80000001, reg); info_p->cpuid_extfeatures = - quad(cpuid_result[ecx], cpuid_result[edx]); + quad(reg[ecx], reg[edx]); + } + + DBG(" max_basic : %d\n", info_p->cpuid_max_basic); + DBG(" max_ext : 0x%08x\n", info_p->cpuid_max_ext); + DBG(" vendor : %s\n", info_p->cpuid_vendor); + DBG(" brand_string : %s\n", info_p->cpuid_brand_string); + DBG(" signature : 0x%08x\n", info_p->cpuid_signature); + DBG(" stepping : %d\n", info_p->cpuid_stepping); + DBG(" model : %d\n", info_p->cpuid_model); + DBG(" family : %d\n", info_p->cpuid_family); + DBG(" type : %d\n", info_p->cpuid_type); + DBG(" extmodel : %d\n", info_p->cpuid_extmodel); + DBG(" extfamily : %d\n", info_p->cpuid_extfamily); + DBG(" brand : %d\n", info_p->cpuid_brand); + DBG(" features : 0x%016llx\n", info_p->cpuid_features); + DBG(" extfeatures : 0x%016llx\n", info_p->cpuid_extfeatures); + DBG(" logical_per_package : %d\n", info_p->cpuid_logical_per_package); + DBG(" microcode_version : 0x%08x\n", info_p->cpuid_microcode_version); + + /* Fold in the Invariant TSC feature bit, if present */ + if (info_p->cpuid_max_ext >= 0x80000007) { + cpuid_fn(0x80000007, reg); + info_p->cpuid_extfeatures |= + reg[edx] & (uint32_t)CPUID_EXTFEATURE_TSCI; + DBG(" extfeatures : 0x%016llx\n", + info_p->cpuid_extfeatures); + } + + if (info_p->cpuid_max_basic >= 0x5) { + cpuid_mwait_leaf_t *cmp = &info_p->cpuid_mwait_leaf; + + /* + * Extract the Monitor/Mwait Leaf info: + */ + cpuid_fn(5, reg); + cmp->linesize_min = reg[eax]; + cmp->linesize_max = reg[ebx]; + cmp->extensions = reg[ecx]; + cmp->sub_Cstates = reg[edx]; + info_p->cpuid_mwait_leafp = cmp; + + DBG(" Monitor/Mwait Leaf:\n"); + DBG(" linesize_min : %d\n", cmp->linesize_min); + DBG(" linesize_max : %d\n", cmp->linesize_max); + DBG(" extensions : %d\n", cmp->extensions); + DBG(" sub_Cstates : 0x%08x\n", cmp->sub_Cstates); + } + + if (info_p->cpuid_max_basic >= 0x6) { + cpuid_thermal_leaf_t *ctp = &info_p->cpuid_thermal_leaf; + + /* + * The thermal and Power Leaf: + */ + cpuid_fn(6, reg); + ctp->sensor = bitfield32(reg[eax], 0, 0); + ctp->dynamic_acceleration = bitfield32(reg[eax], 1, 1); + ctp->invariant_APIC_timer = bitfield32(reg[eax], 2, 2); + ctp->core_power_limits = bitfield32(reg[eax], 4, 4); + ctp->fine_grain_clock_mod = bitfield32(reg[eax], 5, 5); + ctp->package_thermal_intr = bitfield32(reg[eax], 6, 6); + ctp->thresholds = bitfield32(reg[ebx], 3, 0); + ctp->ACNT_MCNT = bitfield32(reg[ecx], 0, 0); + ctp->hardware_feedback = bitfield32(reg[ecx], 1, 1); + ctp->energy_policy = bitfield32(reg[ecx], 3, 3); + info_p->cpuid_thermal_leafp = ctp; + + DBG(" Thermal/Power Leaf:\n"); + DBG(" sensor : %d\n", ctp->sensor); + DBG(" dynamic_acceleration : %d\n", ctp->dynamic_acceleration); + DBG(" invariant_APIC_timer : %d\n", ctp->invariant_APIC_timer); + DBG(" core_power_limits : %d\n", ctp->core_power_limits); + DBG(" fine_grain_clock_mod : %d\n", ctp->fine_grain_clock_mod); + DBG(" package_thermal_intr : %d\n", ctp->package_thermal_intr); + DBG(" thresholds : %d\n", ctp->thresholds); + DBG(" ACNT_MCNT : %d\n", ctp->ACNT_MCNT); + DBG(" ACNT2 : %d\n", ctp->hardware_feedback); + DBG(" energy_policy : %d\n", ctp->energy_policy); + } + + if (info_p->cpuid_max_basic >= 0xa) { + cpuid_arch_perf_leaf_t *capp = &info_p->cpuid_arch_perf_leaf; + + /* + * Architectural Performance Monitoring Leaf: + */ + cpuid_fn(0xa, reg); + capp->version = bitfield32(reg[eax], 7, 0); + capp->number = bitfield32(reg[eax], 15, 8); + capp->width = bitfield32(reg[eax], 23, 16); + capp->events_number = bitfield32(reg[eax], 31, 24); + capp->events = reg[ebx]; + capp->fixed_number = bitfield32(reg[edx], 4, 0); + capp->fixed_width = bitfield32(reg[edx], 12, 5); + info_p->cpuid_arch_perf_leafp = capp; + + DBG(" Architectural Performance Monitoring Leaf:\n"); + DBG(" version : %d\n", capp->version); + DBG(" number : %d\n", capp->number); + DBG(" width : %d\n", capp->width); + DBG(" events_number : %d\n", capp->events_number); + DBG(" events : %d\n", capp->events); + DBG(" fixed_number : %d\n", capp->fixed_number); + DBG(" fixed_width : %d\n", capp->fixed_width); + } + + if (info_p->cpuid_max_basic >= 0xd) { + cpuid_xsave_leaf_t *xsp = &info_p->cpuid_xsave_leaf; + /* + * XSAVE Features: + */ + cpuid_fn(0xd, info_p->cpuid_xsave_leaf.extended_state); + info_p->cpuid_xsave_leafp = xsp; + + DBG(" XSAVE Leaf:\n"); + DBG(" EAX : 0x%x\n", xsp->extended_state[eax]); + DBG(" EBX : 0x%x\n", xsp->extended_state[ebx]); + DBG(" ECX : 0x%x\n", xsp->extended_state[ecx]); + DBG(" EDX : 0x%x\n", xsp->extended_state[edx]); + } + + if (info_p->cpuid_model >= CPUID_MODEL_IVYBRIDGE) { + /* + * Leaf7 Features: + */ + cpuid_fn(0x7, reg); + info_p->cpuid_leaf7_features = reg[ebx]; + + DBG(" Feature Leaf7:\n"); + DBG(" EBX : 0x%x\n", reg[ebx]); } return; } -static void -set_cpu_unknown(__unused i386_cpu_info_t *info_p) +static uint32_t +cpuid_set_cpufamily(i386_cpu_info_t *info_p) { - info_p->cpuid_model_string = "Unknown"; + uint32_t cpufamily = CPUFAMILY_UNKNOWN; + + switch (info_p->cpuid_family) { + case 6: + switch (info_p->cpuid_model) { + case 15: + cpufamily = CPUFAMILY_INTEL_MEROM; + break; + case 23: + cpufamily = CPUFAMILY_INTEL_PENRYN; + break; + case CPUID_MODEL_NEHALEM: + case CPUID_MODEL_FIELDS: + case CPUID_MODEL_DALES: + case CPUID_MODEL_NEHALEM_EX: + cpufamily = CPUFAMILY_INTEL_NEHALEM; + break; + case CPUID_MODEL_DALES_32NM: + case CPUID_MODEL_WESTMERE: + case CPUID_MODEL_WESTMERE_EX: + cpufamily = CPUFAMILY_INTEL_WESTMERE; + break; + case CPUID_MODEL_SANDYBRIDGE: + case CPUID_MODEL_JAKETOWN: + cpufamily = CPUFAMILY_INTEL_SANDYBRIDGE; + break; + case CPUID_MODEL_IVYBRIDGE: + case CPUID_MODEL_IVYBRIDGE_EP: + cpufamily = CPUFAMILY_INTEL_IVYBRIDGE; + break; + case CPUID_MODEL_HASWELL: + case CPUID_MODEL_HASWELL_ULT: + case CPUID_MODEL_CRYSTALWELL: + cpufamily = CPUFAMILY_INTEL_HASWELL; + break; + } + break; + } + + info_p->cpuid_cpufamily = cpufamily; + DBG("cpuid_set_cpufamily(%p) returning 0x%x\n", info_p, cpufamily); + return cpufamily; } +/* + * Must be invoked either when executing single threaded, or with + * independent synchronization. + */ +void +cpuid_set_info(void) +{ + i386_cpu_info_t *info_p = &cpuid_cpu_info; + cpuid_set_generic_info(info_p); -static struct { + /* verify we are running on a supported CPU */ + if ((strncmp(CPUID_VID_INTEL, info_p->cpuid_vendor, + min(strlen(CPUID_STRING_UNKNOWN) + 1, + sizeof(info_p->cpuid_vendor)))) || + (cpuid_set_cpufamily(info_p) == CPUFAMILY_UNKNOWN)) + panic("Unsupported CPU"); + + info_p->cpuid_cpu_type = CPU_TYPE_X86; + info_p->cpuid_cpu_subtype = CPU_SUBTYPE_X86_ARCH1; + /* Must be invoked after set_generic_info */ + cpuid_set_cache_info(info_p); + + /* + * Find the number of enabled cores and threads + * (which determines whether SMT/Hyperthreading is active). + */ + switch (info_p->cpuid_cpufamily) { + case CPUFAMILY_INTEL_WESTMERE: { + uint64_t msr = rdmsr64(MSR_CORE_THREAD_COUNT); + info_p->core_count = bitfield32((uint32_t)msr, 19, 16); + info_p->thread_count = bitfield32((uint32_t)msr, 15, 0); + break; + } + case CPUFAMILY_INTEL_HASWELL: + case CPUFAMILY_INTEL_IVYBRIDGE: + case CPUFAMILY_INTEL_SANDYBRIDGE: + case CPUFAMILY_INTEL_NEHALEM: { + uint64_t msr = rdmsr64(MSR_CORE_THREAD_COUNT); + info_p->core_count = bitfield32((uint32_t)msr, 31, 16); + info_p->thread_count = bitfield32((uint32_t)msr, 15, 0); + break; + } + } + if (info_p->core_count == 0) { + info_p->core_count = info_p->cpuid_cores_per_package; + info_p->thread_count = info_p->cpuid_logical_per_package; + } + DBG("cpuid_set_info():\n"); + DBG(" core_count : %d\n", info_p->core_count); + DBG(" thread_count : %d\n", info_p->thread_count); + + info_p->cpuid_model_string = ""; /* deprecated */ +} + +static struct table { uint64_t mask; const char *name; } feature_map[] = { - {CPUID_FEATURE_FPU, "FPU",}, - {CPUID_FEATURE_VME, "VME",}, - {CPUID_FEATURE_DE, "DE",}, - {CPUID_FEATURE_PSE, "PSE",}, - {CPUID_FEATURE_TSC, "TSC",}, - {CPUID_FEATURE_MSR, "MSR",}, - {CPUID_FEATURE_PAE, "PAE",}, - {CPUID_FEATURE_MCE, "MCE",}, - {CPUID_FEATURE_CX8, "CX8",}, - {CPUID_FEATURE_APIC, "APIC",}, - {CPUID_FEATURE_SEP, "SEP",}, - {CPUID_FEATURE_MTRR, "MTRR",}, - {CPUID_FEATURE_PGE, "PGE",}, - {CPUID_FEATURE_MCA, "MCA",}, - {CPUID_FEATURE_CMOV, "CMOV",}, - {CPUID_FEATURE_PAT, "PAT",}, - {CPUID_FEATURE_PSE36, "PSE36",}, - {CPUID_FEATURE_PSN, "PSN",}, - {CPUID_FEATURE_CLFSH, "CLFSH",}, - {CPUID_FEATURE_DS, "DS",}, - {CPUID_FEATURE_ACPI, "ACPI",}, - {CPUID_FEATURE_MMX, "MMX",}, - {CPUID_FEATURE_FXSR, "FXSR",}, - {CPUID_FEATURE_SSE, "SSE",}, - {CPUID_FEATURE_SSE2, "SSE2",}, - {CPUID_FEATURE_SS, "SS",}, - {CPUID_FEATURE_HTT, "HTT",}, - {CPUID_FEATURE_TM, "TM",}, - {CPUID_FEATURE_SSE3, "SSE3"}, - {CPUID_FEATURE_MONITOR, "MON"}, - {CPUID_FEATURE_DSCPL, "DSCPL"}, - {CPUID_FEATURE_VMX, "VMX"}, - {CPUID_FEATURE_SMX, "SMX"}, - {CPUID_FEATURE_EST, "EST"}, - {CPUID_FEATURE_TM2, "TM2"}, - {CPUID_FEATURE_MNI, "MNI"}, - {CPUID_FEATURE_CID, "CID"}, - {CPUID_FEATURE_CX16, "CX16"}, - {CPUID_FEATURE_xTPR, "TPR"}, + {CPUID_FEATURE_FPU, "FPU"}, + {CPUID_FEATURE_VME, "VME"}, + {CPUID_FEATURE_DE, "DE"}, + {CPUID_FEATURE_PSE, "PSE"}, + {CPUID_FEATURE_TSC, "TSC"}, + {CPUID_FEATURE_MSR, "MSR"}, + {CPUID_FEATURE_PAE, "PAE"}, + {CPUID_FEATURE_MCE, "MCE"}, + {CPUID_FEATURE_CX8, "CX8"}, + {CPUID_FEATURE_APIC, "APIC"}, + {CPUID_FEATURE_SEP, "SEP"}, + {CPUID_FEATURE_MTRR, "MTRR"}, + {CPUID_FEATURE_PGE, "PGE"}, + {CPUID_FEATURE_MCA, "MCA"}, + {CPUID_FEATURE_CMOV, "CMOV"}, + {CPUID_FEATURE_PAT, "PAT"}, + {CPUID_FEATURE_PSE36, "PSE36"}, + {CPUID_FEATURE_PSN, "PSN"}, + {CPUID_FEATURE_CLFSH, "CLFSH"}, + {CPUID_FEATURE_DS, "DS"}, + {CPUID_FEATURE_ACPI, "ACPI"}, + {CPUID_FEATURE_MMX, "MMX"}, + {CPUID_FEATURE_FXSR, "FXSR"}, + {CPUID_FEATURE_SSE, "SSE"}, + {CPUID_FEATURE_SSE2, "SSE2"}, + {CPUID_FEATURE_SS, "SS"}, + {CPUID_FEATURE_HTT, "HTT"}, + {CPUID_FEATURE_TM, "TM"}, + {CPUID_FEATURE_PBE, "PBE"}, + {CPUID_FEATURE_SSE3, "SSE3"}, + {CPUID_FEATURE_PCLMULQDQ, "PCLMULQDQ"}, + {CPUID_FEATURE_DTES64, "DTES64"}, + {CPUID_FEATURE_MONITOR, "MON"}, + {CPUID_FEATURE_DSCPL, "DSCPL"}, + {CPUID_FEATURE_VMX, "VMX"}, + {CPUID_FEATURE_SMX, "SMX"}, + {CPUID_FEATURE_EST, "EST"}, + {CPUID_FEATURE_TM2, "TM2"}, + {CPUID_FEATURE_SSSE3, "SSSE3"}, + {CPUID_FEATURE_CID, "CID"}, + {CPUID_FEATURE_FMA, "FMA"}, + {CPUID_FEATURE_CX16, "CX16"}, + {CPUID_FEATURE_xTPR, "TPR"}, + {CPUID_FEATURE_PDCM, "PDCM"}, + {CPUID_FEATURE_SSE4_1, "SSE4.1"}, + {CPUID_FEATURE_SSE4_2, "SSE4.2"}, + {CPUID_FEATURE_x2APIC, "x2APIC"}, + {CPUID_FEATURE_MOVBE, "MOVBE"}, + {CPUID_FEATURE_POPCNT, "POPCNT"}, + {CPUID_FEATURE_AES, "AES"}, + {CPUID_FEATURE_VMM, "VMM"}, + {CPUID_FEATURE_PCID, "PCID"}, + {CPUID_FEATURE_XSAVE, "XSAVE"}, + {CPUID_FEATURE_OSXSAVE, "OSXSAVE"}, + {CPUID_FEATURE_SEGLIM64, "SEGLIM64"}, + {CPUID_FEATURE_TSCTMR, "TSCTMR"}, + {CPUID_FEATURE_AVX1_0, "AVX1.0"}, + {CPUID_FEATURE_RDRAND, "RDRAND"}, + {CPUID_FEATURE_F16C, "F16C"}, {0, 0} }, extfeature_map[] = { {CPUID_EXTFEATURE_SYSCALL, "SYSCALL"}, {CPUID_EXTFEATURE_XD, "XD"}, + {CPUID_EXTFEATURE_1GBPAGE, "1GBPAGE"}, {CPUID_EXTFEATURE_EM64T, "EM64T"}, {CPUID_EXTFEATURE_LAHF, "LAHF"}, + {CPUID_EXTFEATURE_RDTSCP, "RDTSCP"}, + {CPUID_EXTFEATURE_TSCI, "TSCI"}, + {0, 0} + +}, +leaf7_feature_map[] = { + {CPUID_LEAF7_FEATURE_SMEP, "SMEP"}, + {CPUID_LEAF7_FEATURE_ENFSTRG, "ENFSTRG"}, + {CPUID_LEAF7_FEATURE_RDWRFSGS, "RDWRFSGS"}, + {CPUID_LEAF7_FEATURE_TSCOFF, "TSC_THREAD_OFFSET"}, + {CPUID_LEAF7_FEATURE_BMI1, "BMI1"}, + {CPUID_LEAF7_FEATURE_HLE, "HLE"}, + {CPUID_LEAF7_FEATURE_AVX2, "AVX2"}, + {CPUID_LEAF7_FEATURE_BMI2, "BMI2"}, + {CPUID_LEAF7_FEATURE_INVPCID, "INVPCID"}, + {CPUID_LEAF7_FEATURE_RTM, "RTM"}, {0, 0} }; -char * -cpuid_get_feature_names(uint64_t features, char *buf, unsigned buf_len) +static char * +cpuid_get_names(struct table *map, uint64_t bits, char *buf, unsigned buf_len) { - int len = -1; + size_t len = 0; char *p = buf; int i; - for (i = 0; feature_map[i].mask != 0; i++) { - if ((features & feature_map[i].mask) == 0) + for (i = 0; map[i].mask != 0; i++) { + if ((bits & map[i].mask) == 0) continue; - if (len > 0) + if (len && ((size_t) (p - buf) < (buf_len - 1))) *p++ = ' '; - len = min(strlen(feature_map[i].name), (buf_len-1) - (p-buf)); + len = min(strlen(map[i].name), (size_t)((buf_len-1)-(p-buf))); if (len == 0) break; - bcopy(feature_map[i].name, p, len); + bcopy(map[i].name, p, len); p += len; } *p = '\0'; return buf; } +i386_cpu_info_t * +cpuid_info(void) +{ + /* Set-up the cpuid_info stucture lazily */ + if (cpuid_cpu_infop == NULL) { + PE_parse_boot_argn("-cpuid", &cpuid_dbg, sizeof(cpuid_dbg)); + cpuid_set_info(); + cpuid_cpu_infop = &cpuid_cpu_info; + } + return cpuid_cpu_infop; +} + +char * +cpuid_get_feature_names(uint64_t features, char *buf, unsigned buf_len) +{ + return cpuid_get_names(feature_map, features, buf, buf_len); +} + char * cpuid_get_extfeature_names(uint64_t extfeatures, char *buf, unsigned buf_len) { - int len = -1; - char *p = buf; - int i; + return cpuid_get_names(extfeature_map, extfeatures, buf, buf_len); +} - for (i = 0; extfeature_map[i].mask != 0; i++) { - if ((extfeatures & extfeature_map[i].mask) == 0) - continue; - if (len > 0) - *p++ = ' '; - len = min(strlen(extfeature_map[i].name), (buf_len-1)-(p-buf)); - if (len == 0) - break; - bcopy(extfeature_map[i].name, p, len); - p += len; - } - *p = '\0'; - return buf; +char * +cpuid_get_leaf7_feature_names(uint64_t features, char *buf, unsigned buf_len) +{ + return cpuid_get_names(leaf7_feature_map, features, buf, buf_len); } void @@ -738,17 +972,20 @@ cpuid_feature_display( { char buf[256]; - kprintf("%s: %s\n", header, - cpuid_get_feature_names(cpuid_features(), - buf, sizeof(buf))); + kprintf("%s: %s", header, + cpuid_get_feature_names(cpuid_features(), buf, sizeof(buf))); + if (cpuid_leaf7_features()) + kprintf(" %s", cpuid_get_leaf7_feature_names( + cpuid_leaf7_features(), buf, sizeof(buf))); + kprintf("\n"); if (cpuid_features() & CPUID_FEATURE_HTT) { #define s_if_plural(n) ((n > 1) ? "s" : "") kprintf(" HTT: %d core%s per package;" " %d logical cpu%s per package\n", - cpuid_cpu_info.cpuid_cores_per_package, - s_if_plural(cpuid_cpu_info.cpuid_cores_per_package), - cpuid_cpu_info.cpuid_logical_per_package, - s_if_plural(cpuid_cpu_info.cpuid_logical_per_package)); + cpuid_cpu_infop->cpuid_cores_per_package, + s_if_plural(cpuid_cpu_infop->cpuid_cores_per_package), + cpuid_cpu_infop->cpuid_logical_per_package, + s_if_plural(cpuid_cpu_infop->cpuid_logical_per_package)); } } @@ -767,110 +1004,135 @@ void cpuid_cpu_display( const char *header) { - if (cpuid_cpu_info.cpuid_brand_string[0] != '\0') { - kprintf("%s: %s\n", header, cpuid_cpu_info.cpuid_brand_string); + if (cpuid_cpu_infop->cpuid_brand_string[0] != '\0') { + kprintf("%s: %s\n", header, cpuid_cpu_infop->cpuid_brand_string); } } unsigned int cpuid_family(void) { - return cpuid_cpu_info.cpuid_family; + return cpuid_info()->cpuid_family; +} + +uint32_t +cpuid_cpufamily(void) +{ + return cpuid_info()->cpuid_cpufamily; } cpu_type_t cpuid_cputype(void) { - return cpuid_cpu_info.cpuid_cpu_type; + return cpuid_info()->cpuid_cpu_type; } cpu_subtype_t cpuid_cpusubtype(void) { - return cpuid_cpu_info.cpuid_cpu_subtype; + return cpuid_info()->cpuid_cpu_subtype; } uint64_t cpuid_features(void) { static int checked = 0; - char fpu_arg[16] = { 0 }; + char fpu_arg[20] = { 0 }; + + (void) cpuid_info(); if (!checked) { /* check for boot-time fpu limitations */ - if (PE_parse_boot_arg("_fpu", &fpu_arg[0])) { + if (PE_parse_boot_argn("_fpu", &fpu_arg[0], sizeof (fpu_arg))) { printf("limiting fpu features to: %s\n", fpu_arg); - if (!strncmp("387", fpu_arg, sizeof "387") || !strncmp("mmx", fpu_arg, sizeof "mmx")) { + if (!strncmp("387", fpu_arg, sizeof("387")) || !strncmp("mmx", fpu_arg, sizeof("mmx"))) { printf("no sse or sse2\n"); - cpuid_cpu_info.cpuid_features &= ~(CPUID_FEATURE_SSE | CPUID_FEATURE_SSE2 | CPUID_FEATURE_FXSR); - } else if (!strncmp("sse", fpu_arg, sizeof "sse")) { + cpuid_cpu_infop->cpuid_features &= ~(CPUID_FEATURE_SSE | CPUID_FEATURE_SSE2 | CPUID_FEATURE_FXSR); + } else if (!strncmp("sse", fpu_arg, sizeof("sse"))) { printf("no sse2\n"); - cpuid_cpu_info.cpuid_features &= ~(CPUID_FEATURE_SSE2); + cpuid_cpu_infop->cpuid_features &= ~(CPUID_FEATURE_SSE2); } } checked = 1; } - return cpuid_cpu_info.cpuid_features; + return cpuid_cpu_infop->cpuid_features; } uint64_t cpuid_extfeatures(void) { - return cpuid_cpu_info.cpuid_extfeatures; + return cpuid_info()->cpuid_extfeatures; } -i386_cpu_info_t * -cpuid_info(void) +uint64_t +cpuid_leaf7_features(void) { - return &cpuid_cpu_info; + return cpuid_info()->cpuid_leaf7_features; } -void -cpuid_set_info(void) +static i386_vmm_info_t *_cpuid_vmm_infop = NULL; +static i386_vmm_info_t _cpuid_vmm_info; + +static void +cpuid_init_vmm_info(i386_vmm_info_t *info_p) { - cpuid_get_info(&cpuid_cpu_info); -} + uint32_t reg[4]; + uint32_t max_vmm_leaf; -#if MACH_KDB + bzero(info_p, sizeof(*info_p)); -/* - * Display the cpuid - * * - * cp - */ -void -db_cpuid(__unused db_expr_t addr, - __unused int have_addr, - __unused db_expr_t count, - __unused char *modif) -{ + if (!cpuid_vmm_present()) + return; - uint32_t i, mid; - uint32_t cpid[4]; + DBG("cpuid_init_vmm_info(%p)\n", info_p); - do_cpuid(0, cpid); /* Get the first cpuid which is the number of - * basic ids */ - db_printf("%08X - %08X %08X %08X %08X\n", - 0, cpid[eax], cpid[ebx], cpid[ecx], cpid[edx]); + /* do cpuid 0x40000000 to get VMM vendor */ + cpuid_fn(0x40000000, reg); + max_vmm_leaf = reg[eax]; + bcopy((char *)®[ebx], &info_p->cpuid_vmm_vendor[0], 4); + bcopy((char *)®[ecx], &info_p->cpuid_vmm_vendor[4], 4); + bcopy((char *)®[edx], &info_p->cpuid_vmm_vendor[8], 4); + info_p->cpuid_vmm_vendor[12] = '\0'; - mid = cpid[eax]; /* Set the number */ - for (i = 1; i <= mid; i++) { /* Dump 'em out */ - do_cpuid(i, cpid); /* Get the next */ - db_printf("%08X - %08X %08X %08X %08X\n", - i, cpid[eax], cpid[ebx], cpid[ecx], cpid[edx]); + if (0 == strcmp(info_p->cpuid_vmm_vendor, CPUID_VMM_ID_VMWARE)) { + /* VMware identification string: kb.vmware.com/kb/1009458 */ + info_p->cpuid_vmm_family = CPUID_VMM_FAMILY_VMWARE; + } else { + info_p->cpuid_vmm_family = CPUID_VMM_FAMILY_UNKNOWN; } - db_printf("\n"); - - do_cpuid(0x80000000, cpid); /* Get the first extended cpuid which - * is the number of extended ids */ - db_printf("%08X - %08X %08X %08X %08X\n", - 0x80000000, cpid[eax], cpid[ebx], cpid[ecx], cpid[edx]); - - mid = cpid[eax]; /* Set the number */ - for (i = 0x80000001; i <= mid; i++) { /* Dump 'em out */ - do_cpuid(i, cpid); /* Get the next */ - db_printf("%08X - %08X %08X %08X %08X\n", - i, cpid[eax], cpid[ebx], cpid[ecx], cpid[edx]); + + /* VMM generic leaves: https://lkml.org/lkml/2008/10/1/246 */ + if (max_vmm_leaf >= 0x40000010) { + cpuid_fn(0x40000010, reg); + + info_p->cpuid_vmm_tsc_frequency = reg[eax]; + info_p->cpuid_vmm_bus_frequency = reg[ebx]; } + + DBG(" vmm_vendor : %s\n", info_p->cpuid_vmm_vendor); + DBG(" vmm_family : %u\n", info_p->cpuid_vmm_family); + DBG(" vmm_bus_frequency : %u\n", info_p->cpuid_vmm_bus_frequency); + DBG(" vmm_tsc_frequency : %u\n", info_p->cpuid_vmm_tsc_frequency); +} + +boolean_t +cpuid_vmm_present(void) +{ + return (cpuid_features() & CPUID_FEATURE_VMM) ? TRUE : FALSE; +} + +i386_vmm_info_t * +cpuid_vmm_info(void) +{ + if (_cpuid_vmm_infop == NULL) { + cpuid_init_vmm_info(&_cpuid_vmm_info); + _cpuid_vmm_infop = &_cpuid_vmm_info; + } + return _cpuid_vmm_infop; +} + +uint32_t +cpuid_vmm_family(void) +{ + return cpuid_vmm_info()->cpuid_vmm_family; } -#endif