1 /* 2 * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc. 3 * 4 * Licensed under the terms of the GNU GPL License version 2. 5 * 6 * Miscellaneous helpers which do not fit or are worth 7 * to put into separate headers 8 */ 9 10 #ifndef __CPUPOWERUTILS_HELPERS__ 11 #define __CPUPOWERUTILS_HELPERS__ 12 13 #include <libintl.h> 14 #include <locale.h> 15 16 #include "helpers/bitmask.h" 17 18 /* Internationalization ****************************/ 19 #ifdef NLS 20 21 #define _(String) gettext(String) 22 #ifndef gettext_noop 23 #define gettext_noop(String) String 24 #endif 25 #define N_(String) gettext_noop(String) 26 27 #else /* !NLS */ 28 29 #define _(String) String 30 #define N_(String) String 31 32 #endif 33 /* Internationalization ****************************/ 34 35 extern int run_as_root; 36 extern struct bitmask *cpus_chosen; 37 38 /* Global verbose (-d) stuff *********************************/ 39 /* 40 * define DEBUG via global Makefile variable 41 * Debug output is sent to stderr, do: 42 * cpupower monitor 2>/tmp/debug 43 * to split debug output away from normal output 44 */ 45 #ifdef DEBUG 46 extern int be_verbose; 47 48 #define dprint(fmt, ...) { \ 49 if (be_verbose) { \ 50 fprintf(stderr, "%s: " fmt, \ 51 __func__, ##__VA_ARGS__); \ 52 } \ 53 } 54 #else 55 static inline void dprint(const char *fmt, ...) { } 56 #endif 57 extern int be_verbose; 58 /* Global verbose (-v) stuff *********************************/ 59 60 /* cpuid and cpuinfo helpers **************************/ 61 enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL, 62 X86_VENDOR_AMD, X86_VENDOR_MAX}; 63 64 #define CPUPOWER_CAP_INV_TSC 0x00000001 65 #define CPUPOWER_CAP_APERF 0x00000002 66 #define CPUPOWER_CAP_AMD_CBP 0x00000004 67 #define CPUPOWER_CAP_PERF_BIAS 0x00000008 68 #define CPUPOWER_CAP_HAS_TURBO_RATIO 0x00000010 69 #define CPUPOWER_CAP_IS_SNB 0x00000020 70 #define CPUPOWER_CAP_INTEL_IDA 0x00000040 71 72 #define MAX_HW_PSTATES 10 73 74 struct cpupower_cpu_info { 75 enum cpupower_cpu_vendor vendor; 76 unsigned int family; 77 unsigned int model; 78 unsigned int stepping; 79 /* CPU capabilities read out from cpuid */ 80 unsigned long long caps; 81 }; 82 83 /* get_cpu_info 84 * 85 * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo 86 * 87 * Returns 0 on success or a negativ error code 88 * Only used on x86, below global's struct values are zero/unknown on 89 * other archs 90 */ 91 extern int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info); 92 extern struct cpupower_cpu_info cpupower_cpu_info; 93 /* cpuid and cpuinfo helpers **************************/ 94 95 struct cpuid_core_info { 96 int pkg; 97 int core; 98 int cpu; 99 100 /* flags */ 101 unsigned int is_online:1; 102 }; 103 104 /* CPU topology/hierarchy parsing ******************/ 105 struct cpupower_topology { 106 /* Amount of CPU cores, packages and threads per core in the system */ 107 unsigned int cores; 108 unsigned int pkgs; 109 unsigned int threads; /* per core */ 110 111 /* Array gets mallocated with cores entries, holding per core info */ 112 struct cpuid_core_info *core_info; 113 }; 114 115 extern int get_cpu_topology(struct cpupower_topology *cpu_top); 116 extern void cpu_topology_release(struct cpupower_topology cpu_top); 117 118 /* CPU topology/hierarchy parsing ******************/ 119 120 /* X86 ONLY ****************************************/ 121 #if defined(__i386__) || defined(__x86_64__) 122 123 #include <pci/pci.h> 124 125 /* Read/Write msr ****************************/ 126 extern int read_msr(int cpu, unsigned int idx, unsigned long long *val); 127 extern int write_msr(int cpu, unsigned int idx, unsigned long long val); 128 129 extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val); 130 extern int msr_intel_get_perf_bias(unsigned int cpu); 131 extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu); 132 133 /* Read/Write msr ****************************/ 134 135 /* PCI stuff ****************************/ 136 extern int amd_pci_get_num_boost_states(int *active, int *states); 137 extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain, 138 int bus, int slot, int func, int vendor, 139 int dev); 140 extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc, 141 int slot, int func); 142 143 /* PCI stuff ****************************/ 144 145 /* AMD HW pstate decoding **************************/ 146 147 extern int decode_pstates(unsigned int cpu, unsigned int cpu_family, 148 int boost_states, unsigned long *pstates, int *no); 149 150 /* AMD HW pstate decoding **************************/ 151 152 extern int cpufreq_has_boost_support(unsigned int cpu, int *support, 153 int *active, int * states); 154 /* 155 * CPUID functions returning a single datum 156 */ 157 unsigned int cpuid_eax(unsigned int op); 158 unsigned int cpuid_ebx(unsigned int op); 159 unsigned int cpuid_ecx(unsigned int op); 160 unsigned int cpuid_edx(unsigned int op); 161 162 /* cpuid and cpuinfo helpers **************************/ 163 /* X86 ONLY ********************************************/ 164 #else 165 static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family, 166 int boost_states, unsigned long *pstates, 167 int *no) 168 { return -1; }; 169 170 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val) 171 { return -1; }; 172 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val) 173 { return -1; }; 174 static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val) 175 { return -1; }; 176 static inline int msr_intel_get_perf_bias(unsigned int cpu) 177 { return -1; }; 178 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu) 179 { return 0; }; 180 181 /* Read/Write msr ****************************/ 182 183 static inline int cpufreq_has_boost_support(unsigned int cpu, int *support, 184 int *active, int * states) 185 { return -1; } 186 187 /* cpuid and cpuinfo helpers **************************/ 188 189 static inline unsigned int cpuid_eax(unsigned int op) { return 0; }; 190 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; }; 191 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; }; 192 static inline unsigned int cpuid_edx(unsigned int op) { return 0; }; 193 #endif /* defined(__i386__) || defined(__x86_64__) */ 194 195 #endif /* __CPUPOWERUTILS_HELPERS__ */ 196