op_cpu_type.c revision 10e23eebca4175a8dfe3a788b2bebacb1fcfce54
1/** 2 * @file op_cpu_type.c 3 * CPU type determination 4 * 5 * @remark Copyright 2002 OProfile authors 6 * @remark Read the file COPYING 7 * 8 * @author John Levon 9 * @author Philippe Elie 10 */ 11 12#include <stdio.h> 13#include <stdlib.h> 14#include <string.h> 15 16#include "op_cpu_type.h" 17 18struct cpu_descr { 19 char const * pretty; 20 char const * name; 21 op_cpu cpu; 22 unsigned int nr_counters; 23}; 24 25static struct cpu_descr const cpu_descrs[MAX_CPU_TYPE] = { 26 { "Pentium Pro", "i386/ppro", CPU_PPRO, 2 }, 27 { "PII", "i386/pii", CPU_PII, 2 }, 28 { "PIII", "i386/piii", CPU_PIII, 2 }, 29 { "Athlon", "i386/athlon", CPU_ATHLON, 4 }, 30 { "CPU with timer interrupt", "timer", CPU_TIMER_INT, 1 }, 31 { "CPU with RTC device", "rtc", CPU_RTC, 1 }, 32 { "P4 / Xeon", "i386/p4", CPU_P4, 8 }, 33 { "IA64", "ia64/ia64", CPU_IA64, 4 }, 34 { "Itanium", "ia64/itanium", CPU_IA64_1, 4 }, 35 { "Itanium 2", "ia64/itanium2", CPU_IA64_2, 4 }, 36 { "AMD64 processors", "x86-64/hammer", CPU_HAMMER, 4 }, 37 { "P4 / Xeon with 2 hyper-threads", "i386/p4-ht", CPU_P4_HT2, 4 }, 38 { "Alpha EV4", "alpha/ev4", CPU_AXP_EV4, 2 }, 39 { "Alpha EV5", "alpha/ev5", CPU_AXP_EV5, 3 }, 40 { "Alpha PCA56", "alpha/pca56", CPU_AXP_PCA56, 3 }, 41 { "Alpha EV6", "alpha/ev6", CPU_AXP_EV6, 2 }, 42 { "Alpha EV67", "alpha/ev67", CPU_AXP_EV67, 20 }, 43 { "Pentium M (P6 core)", "i386/p6_mobile", CPU_P6_MOBILE, 2 }, 44 { "ARM/XScale PMU1", "arm/xscale1", CPU_ARM_XSCALE1, 3 }, 45 { "ARM/XScale PMU2", "arm/xscale2", CPU_ARM_XSCALE2, 5 }, 46 { "ppc64 POWER4", "ppc64/power4", CPU_PPC64_POWER4, 8 }, 47 { "ppc64 POWER5", "ppc64/power5", CPU_PPC64_POWER5, 6 }, 48 { "ppc64 POWER5+", "ppc64/power5+", CPU_PPC64_POWER5p, 6 }, 49 { "ppc64 970", "ppc64/970", CPU_PPC64_970, 8 }, 50 { "MIPS 20K", "mips/20K", CPU_MIPS_20K, 1}, 51 { "MIPS 24K", "mips/24K", CPU_MIPS_24K, 2}, 52 { "MIPS 25K", "mips/25K", CPU_MIPS_25K, 2}, 53 { "MIPS 34K", "mips/34K", CPU_MIPS_34K, 4}, 54 { "MIPS 5K", "mips/5K", CPU_MIPS_5K, 2}, 55 { "MIPS R10000", "mips/r10000", CPU_MIPS_R10000, 2 }, 56 { "MIPS R12000", "mips/r12000", CPU_MIPS_R12000, 4 }, 57 { "QED RM7000", "mips/rm7000", CPU_MIPS_RM7000, 1 }, 58 { "PMC-Sierra RM9000", "mips/rm9000", CPU_MIPS_RM9000, 2 }, 59 { "Sibyte SB1", "mips/sb1", CPU_MIPS_SB1, 4 }, 60 { "NEC VR5432", "mips/vr5432", CPU_MIPS_VR5432, 2 }, 61 { "NEC VR5500", "mips/vr5500", CPU_MIPS_VR5500, 2 }, 62 { "e500", "ppc/e500", CPU_PPC_E500, 4 }, 63 { "e500v2", "ppc/e500v2", CPU_PPC_E500_2, 4 }, 64 { "Core Solo / Duo", "i386/core", CPU_CORE, 2 }, 65 { "PowerPC G4", "ppc/7450", CPU_PPC_7450, 6 }, 66 { "Core 2", "i386/core_2", CPU_CORE_2, 2 }, 67 { "ppc64 POWER6", "ppc64/power6", CPU_PPC64_POWER6, 4 }, 68 { "ppc64 970MP", "ppc64/970MP", CPU_PPC64_970MP, 8 }, 69 { "ppc64 Cell Broadband Engine", "ppc64/cell-be", CPU_PPC64_CELL, 8 }, 70 { "AMD64 family10", "x86-64/family10", CPU_FAMILY10, 4 }, 71 { "ppc64 PA6T", "ppc64/pa6t", CPU_PPC64_PA6T, 6 }, 72 { "ARM MPCore", "arm/mpcore", CPU_ARM_MPCORE, 2 }, 73 { "ARM V6 PMU", "arm/armv6", CPU_ARM_V6, 3 }, 74 { "ppc64 POWER5++", "ppc64/power5++", CPU_PPC64_POWER5pp, 6 }, 75 { "e300", "ppc/e300", CPU_PPC_E300, 4 }, 76 { "AVR32", "avr32", CPU_AVR32, 3 }, 77}; 78 79static size_t const nr_cpu_descrs = sizeof(cpu_descrs) / sizeof(struct cpu_descr); 80 81op_cpu op_get_cpu_type(void) 82{ 83 int cpu_type = CPU_NO_GOOD; 84 char str[100]; 85 FILE * fp; 86 87 fp = fopen("/proc/sys/dev/oprofile/cpu_type", "r"); 88 if (!fp) { 89 /* Try 2.6's oprofilefs one instead. */ 90 fp = fopen("/dev/oprofile/cpu_type", "r"); 91 if (!fp) { 92 fprintf(stderr, "Unable to open cpu_type file for reading\n"); 93 fprintf(stderr, "Make sure you have done opcontrol --init\n"); 94 return cpu_type; 95 } 96 } 97 98 if (!fgets(str, 99, fp)) { 99 fprintf(stderr, "Could not read cpu type.\n"); 100 return CPU_NO_GOOD; 101 } 102 103 cpu_type = op_get_cpu_number(str); 104 105 fclose(fp); 106 107 return cpu_type; 108} 109 110 111op_cpu op_get_cpu_number(char const * cpu_string) 112{ 113 int cpu_type = CPU_NO_GOOD; 114 size_t i; 115 116 for (i = 0; i < nr_cpu_descrs; ++i) { 117 if (!strcmp(cpu_descrs[i].name, cpu_string)) { 118 cpu_type = cpu_descrs[i].cpu; 119 break; 120 } 121 } 122 123 /* Attempt to convert into a number */ 124 if (cpu_type == CPU_NO_GOOD) 125 sscanf(cpu_string, "%d\n", &cpu_type); 126 127 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 128 cpu_type = CPU_NO_GOOD; 129 130 return cpu_type; 131} 132 133 134char const * op_get_cpu_type_str(op_cpu cpu_type) 135{ 136 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 137 return "invalid cpu type"; 138 139 return cpu_descrs[cpu_type].pretty; 140} 141 142 143char const * op_get_cpu_name(op_cpu cpu_type) 144{ 145 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 146 return "invalid cpu type"; 147 148 return cpu_descrs[cpu_type].name; 149} 150 151 152int op_get_nr_counters(op_cpu cpu_type) 153{ 154 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 155 return 0; 156 157 return cpu_descrs[cpu_type].nr_counters; 158} 159