1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc. 4 * 5 * Miscellaneous helpers which do not fit or are worth 6 * to put into separate headers 7 */ 8 9 #ifndef __CPUPOWERUTILS_HELPERS__ 10 #define __CPUPOWERUTILS_HELPERS__ 11 12 #include <libintl.h> 13 #include <locale.h> 14 #include <stdbool.h> 15 16 #include "helpers/bitmask.h" 17 #include <cpupower.h> 18 19 /* Internationalization ****************************/ 20 #ifdef NLS 21 22 #define _(String) gettext(String) 23 #ifndef gettext_noop 24 #define gettext_noop(String) String 25 #endif 26 #define N_(String) gettext_noop(String) 27 28 #else /* !NLS */ 29 30 #define _(String) String 31 #define N_(String) String 32 33 #endif 34 /* Internationalization ****************************/ 35 36 extern int run_as_root; 37 extern int base_cpu; 38 extern struct bitmask *cpus_chosen; 39 40 /* Global verbose (-d) stuff *********************************/ 41 /* 42 * define DEBUG via global Makefile variable 43 * Debug output is sent to stderr, do: 44 * cpupower monitor 2>/tmp/debug 45 * to split debug output away from normal output 46 */ 47 #ifdef DEBUG 48 extern int be_verbose; 49 50 #define dprint(fmt, ...) { \ 51 if (be_verbose) { \ 52 fprintf(stderr, "%s: " fmt, \ 53 __func__, ##__VA_ARGS__); \ 54 } \ 55 } 56 #else 57 static inline void dprint(const char *fmt, ...) { } 58 #endif 59 extern int be_verbose; 60 /* Global verbose (-v) stuff *********************************/ 61 62 /* cpuid and cpuinfo helpers **************************/ 63 enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL, 64 X86_VENDOR_AMD, X86_VENDOR_HYGON, X86_VENDOR_MAX}; 65 66 #define CPUPOWER_CAP_INV_TSC 0x00000001 67 #define CPUPOWER_CAP_APERF 0x00000002 68 #define CPUPOWER_CAP_AMD_CPB 0x00000004 69 #define CPUPOWER_CAP_PERF_BIAS 0x00000008 70 #define CPUPOWER_CAP_HAS_TURBO_RATIO 0x00000010 71 #define CPUPOWER_CAP_IS_SNB 0x00000020 72 #define CPUPOWER_CAP_INTEL_IDA 0x00000040 73 #define CPUPOWER_CAP_AMD_RDPRU 0x00000080 74 #define CPUPOWER_CAP_AMD_HW_PSTATE 0x00000100 75 #define CPUPOWER_CAP_AMD_PSTATEDEF 0x00000200 76 #define CPUPOWER_CAP_AMD_CPB_MSR 0x00000400 77 #define CPUPOWER_CAP_AMD_PSTATE 0x00000800 78 79 #define CPUPOWER_AMD_CPBDIS 0x02000000 80 81 #define MAX_HW_PSTATES 10 82 83 struct cpupower_cpu_info { 84 enum cpupower_cpu_vendor vendor; 85 unsigned int family; 86 unsigned int model; 87 unsigned int stepping; 88 /* CPU capabilities read out from cpuid */ 89 unsigned long long caps; 90 }; 91 92 /* get_cpu_info 93 * 94 * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo 95 * 96 * Returns 0 on success or a negative error code 97 * Only used on x86, below global's struct values are zero/unknown on 98 * other archs 99 */ 100 extern int get_cpu_info(struct cpupower_cpu_info *cpu_info); 101 extern struct cpupower_cpu_info cpupower_cpu_info; 102 103 104 /* cpuid and cpuinfo helpers **************************/ 105 106 /* X86 ONLY ****************************************/ 107 #if defined(__i386__) || defined(__x86_64__) 108 109 #include <pci/pci.h> 110 111 /* Read/Write msr ****************************/ 112 extern int read_msr(int cpu, unsigned int idx, unsigned long long *val); 113 extern int write_msr(int cpu, unsigned int idx, unsigned long long val); 114 115 extern int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val); 116 extern int cpupower_intel_get_perf_bias(unsigned int cpu); 117 extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu); 118 119 extern int cpupower_set_epp(unsigned int cpu, char *epp); 120 extern int cpupower_set_amd_pstate_mode(char *mode); 121 extern int cpupower_set_turbo_boost(int turbo_boost); 122 123 /* Read/Write msr ****************************/ 124 125 /* PCI stuff ****************************/ 126 extern int amd_pci_get_num_boost_states(int *active, int *states); 127 extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain, 128 int bus, int slot, int func, int vendor, 129 int dev); 130 extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc, 131 int slot, int func); 132 133 /* PCI stuff ****************************/ 134 135 /* AMD HW pstate decoding **************************/ 136 137 extern int decode_pstates(unsigned int cpu, int boost_states, 138 unsigned long *pstates, int *no); 139 140 /* AMD HW pstate decoding **************************/ 141 142 extern int cpufreq_has_boost_support(unsigned int cpu, int *support, 143 int *active, int * states); 144 145 /* AMD P-State stuff **************************/ 146 bool cpupower_amd_pstate_enabled(void); 147 void amd_pstate_boost_init(unsigned int cpu, 148 int *support, int *active); 149 void amd_pstate_show_perf_and_freq(unsigned int cpu, 150 int no_rounding); 151 152 /* AMD P-State stuff **************************/ 153 154 /* 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, int boost_states, 166 unsigned long *pstates, int *no) 167 { return -1; }; 168 169 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val) 170 { return -1; }; 171 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val) 172 { return -1; }; 173 static inline int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val) 174 { return -1; }; 175 static inline int cpupower_intel_get_perf_bias(unsigned int cpu) 176 { return -1; }; 177 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu) 178 { return 0; }; 179 180 static inline int cpupower_set_epp(unsigned int cpu, char *epp) 181 { return -1; }; 182 static inline int cpupower_set_amd_pstate_mode(char *mode) 183 { return -1; }; 184 static inline int cpupower_set_turbo_boost(int turbo_boost) 185 { return -1; }; 186 187 /* Read/Write msr ****************************/ 188 189 static inline int cpufreq_has_boost_support(unsigned int cpu, int *support, 190 int *active, int * states) 191 { return -1; } 192 193 static inline bool cpupower_amd_pstate_enabled(void) 194 { return false; } 195 static inline void amd_pstate_boost_init(unsigned int cpu, int *support, 196 int *active) 197 {} 198 static inline void amd_pstate_show_perf_and_freq(unsigned int cpu, 199 int no_rounding) 200 {} 201 202 /* cpuid and cpuinfo helpers **************************/ 203 204 static inline unsigned int cpuid_eax(unsigned int op) { return 0; }; 205 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; }; 206 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; }; 207 static inline unsigned int cpuid_edx(unsigned int op) { return 0; }; 208 #endif /* defined(__i386__) || defined(__x86_64__) */ 209 210 /* 211 * CPU State related functions 212 */ 213 extern struct bitmask *online_cpus; 214 extern struct bitmask *offline_cpus; 215 216 void get_cpustate(void); 217 void print_online_cpus(void); 218 void print_offline_cpus(void); 219 void print_speed(unsigned long speed, int no_rounding); 220 221 #endif /* __CPUPOWERUTILS_HELPERS__ */ 222