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 #include "op_hw_specific.h" 18 19 struct cpu_descr { 20 char const * pretty; 21 char const * name; 22 op_cpu cpu; 23 unsigned int nr_counters; 24 }; 25 26 static struct cpu_descr const cpu_descrs[MAX_CPU_TYPE] = { 27 { "Pentium Pro", "i386/ppro", CPU_PPRO, 2 }, 28 { "PII", "i386/pii", CPU_PII, 2 }, 29 { "PIII", "i386/piii", CPU_PIII, 2 }, 30 { "Athlon", "i386/athlon", CPU_ATHLON, 4 }, 31 { "CPU with timer interrupt", "timer", CPU_TIMER_INT, 1 }, 32 { "CPU with RTC device", "rtc", CPU_RTC, 1 }, 33 { "P4 / Xeon", "i386/p4", CPU_P4, 8 }, 34 { "IA64", "ia64/ia64", CPU_IA64, 4 }, 35 { "Itanium", "ia64/itanium", CPU_IA64_1, 4 }, 36 { "Itanium 2", "ia64/itanium2", CPU_IA64_2, 4 }, 37 { "AMD64 processors", "x86-64/hammer", CPU_HAMMER, 4 }, 38 { "P4 / Xeon with 2 hyper-threads", "i386/p4-ht", CPU_P4_HT2, 4 }, 39 { "Alpha EV4", "alpha/ev4", CPU_AXP_EV4, 2 }, 40 { "Alpha EV5", "alpha/ev5", CPU_AXP_EV5, 3 }, 41 { "Alpha PCA56", "alpha/pca56", CPU_AXP_PCA56, 3 }, 42 { "Alpha EV6", "alpha/ev6", CPU_AXP_EV6, 2 }, 43 { "Alpha EV67", "alpha/ev67", CPU_AXP_EV67, 20 }, 44 { "Pentium M (P6 core)", "i386/p6_mobile", CPU_P6_MOBILE, 2 }, 45 { "ARM/XScale PMU1", "arm/xscale1", CPU_ARM_XSCALE1, 3 }, 46 { "ARM/XScale PMU2", "arm/xscale2", CPU_ARM_XSCALE2, 5 }, 47 { "ppc64 POWER4", "ppc64/power4", CPU_PPC64_POWER4, 8 }, 48 { "ppc64 POWER5", "ppc64/power5", CPU_PPC64_POWER5, 6 }, 49 { "ppc64 POWER5+", "ppc64/power5+", CPU_PPC64_POWER5p, 6 }, 50 { "ppc64 970", "ppc64/970", CPU_PPC64_970, 8 }, 51 { "MIPS 20K", "mips/20K", CPU_MIPS_20K, 1}, 52 { "MIPS 24K", "mips/24K", CPU_MIPS_24K, 2}, 53 { "MIPS 25K", "mips/25K", CPU_MIPS_25K, 2}, 54 { "MIPS 34K", "mips/34K", CPU_MIPS_34K, 4}, 55 { "MIPS 5K", "mips/5K", CPU_MIPS_5K, 2}, 56 { "MIPS R10000", "mips/r10000", CPU_MIPS_R10000, 2 }, 57 { "MIPS R12000", "mips/r12000", CPU_MIPS_R12000, 4 }, 58 { "QED RM7000", "mips/rm7000", CPU_MIPS_RM7000, 1 }, 59 { "PMC-Sierra RM9000", "mips/rm9000", CPU_MIPS_RM9000, 2 }, 60 { "Sibyte SB1", "mips/sb1", CPU_MIPS_SB1, 4 }, 61 { "NEC VR5432", "mips/vr5432", CPU_MIPS_VR5432, 2 }, 62 { "NEC VR5500", "mips/vr5500", CPU_MIPS_VR5500, 2 }, 63 { "e500", "ppc/e500", CPU_PPC_E500, 4 }, 64 { "e500v2", "ppc/e500v2", CPU_PPC_E500_2, 4 }, 65 { "Core Solo / Duo", "i386/core", CPU_CORE, 2 }, 66 { "PowerPC G4", "ppc/7450", CPU_PPC_7450, 6 }, 67 { "Core 2", "i386/core_2", CPU_CORE_2, 2 }, 68 { "ppc64 POWER6", "ppc64/power6", CPU_PPC64_POWER6, 4 }, 69 { "ppc64 970MP", "ppc64/970MP", CPU_PPC64_970MP, 8 }, 70 { "ppc64 Cell Broadband Engine", "ppc64/cell-be", CPU_PPC64_CELL, 8 }, 71 { "AMD64 family10", "x86-64/family10", CPU_FAMILY10, 4 }, 72 { "ppc64 PA6T", "ppc64/pa6t", CPU_PPC64_PA6T, 6 }, 73 { "ARM MPCore", "arm/mpcore", CPU_ARM_MPCORE, 2 }, 74 { "ARM V6 PMU", "arm/armv6", CPU_ARM_V6, 3 }, 75 { "ppc64 POWER5++", "ppc64/power5++", CPU_PPC64_POWER5pp, 6 }, 76 { "e300", "ppc/e300", CPU_PPC_E300, 4 }, 77 { "AVR32", "avr32", CPU_AVR32, 3 }, 78 { "ARM V7 PMNC", "arm/armv7", CPU_ARM_V7, 5 }, 79 { "Intel Architectural Perfmon", "i386/arch_perfmon", CPU_ARCH_PERFMON, 0}, 80 { "AMD64 family11h", "x86-64/family11h", CPU_FAMILY11H, 4 }, 81 { "ppc64 POWER7", "ppc64/power7", CPU_PPC64_POWER7, 6 }, 82 { "ppc64 compat version 1", "ppc64/ibm-compat-v1", CPU_PPC64_IBM_COMPAT_V1, 4 }, 83 { "Intel Core/i7", "i386/core_i7", CPU_CORE_I7, 4 }, 84 { "Intel Atom", "i386/atom", CPU_ATOM, 2 }, 85 }; 86 87 static size_t const nr_cpu_descrs = sizeof(cpu_descrs) / sizeof(struct cpu_descr); 88 89 op_cpu op_get_cpu_type(void) 90 { 91 int cpu_type = CPU_NO_GOOD; 92 char str[100]; 93 FILE * fp; 94 95 fp = fopen("/proc/sys/dev/oprofile/cpu_type", "r"); 96 if (!fp) { 97 /* Try 2.6's oprofilefs one instead. */ 98 fp = fopen("/dev/oprofile/cpu_type", "r"); 99 if (!fp) { 100 fprintf(stderr, "Unable to open cpu_type file for reading\n"); 101 fprintf(stderr, "Make sure you have done opcontrol --init\n"); 102 return cpu_type; 103 } 104 } 105 106 if (!fgets(str, 99, fp)) { 107 fprintf(stderr, "Could not read cpu type.\n"); 108 return CPU_NO_GOOD; 109 } 110 111 cpu_type = op_get_cpu_number(str); 112 113 fclose(fp); 114 115 return cpu_type; 116 } 117 118 119 op_cpu op_get_cpu_number(char const * cpu_string) 120 { 121 int cpu_type = CPU_NO_GOOD; 122 size_t i; 123 124 for (i = 0; i < nr_cpu_descrs; ++i) { 125 if (!strcmp(cpu_descrs[i].name, cpu_string)) { 126 cpu_type = cpu_descrs[i].cpu; 127 break; 128 } 129 } 130 131 /* Attempt to convert into a number */ 132 if (cpu_type == CPU_NO_GOOD) 133 sscanf(cpu_string, "%d\n", &cpu_type); 134 135 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 136 cpu_type = CPU_NO_GOOD; 137 138 return cpu_type; 139 } 140 141 142 char const * op_get_cpu_type_str(op_cpu cpu_type) 143 { 144 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 145 return "invalid cpu type"; 146 147 return cpu_descrs[cpu_type].pretty; 148 } 149 150 151 char const * op_get_cpu_name(op_cpu cpu_type) 152 { 153 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 154 return "invalid cpu type"; 155 156 return cpu_descrs[cpu_type].name; 157 } 158 159 160 int op_get_nr_counters(op_cpu cpu_type) 161 { 162 int cnt; 163 164 if (cpu_type <= CPU_NO_GOOD || cpu_type >= MAX_CPU_TYPE) 165 return 0; 166 167 cnt = arch_num_counters(cpu_type); 168 if (cnt >= 0) 169 return cnt; 170 171 return cpu_descrs[cpu_type].nr_counters; 172 } 173
