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 /* Read/Write msr ****************************/ 120 121 /* PCI stuff ****************************/ 122 extern int amd_pci_get_num_boost_states(int *active, int *states); 123 extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain, 124 int bus, int slot, int func, int vendor, 125 int dev); 126 extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc, 127 int slot, int func); 128 129 /* PCI stuff ****************************/ 130 131 /* AMD HW pstate decoding **************************/ 132 133 extern int decode_pstates(unsigned int cpu, int boost_states, 134 unsigned long *pstates, int *no); 135 136 /* AMD HW pstate decoding **************************/ 137 138 extern int cpufreq_has_boost_support(unsigned int cpu, int *support, 139 int *active, int * states); 140 141 /* AMD P-State stuff **************************/ 142 bool cpupower_amd_pstate_enabled(void); 143 void amd_pstate_boost_init(unsigned int cpu, 144 int *support, int *active); 145 void amd_pstate_show_perf_and_freq(unsigned int cpu, 146 int no_rounding); 147 148 /* AMD P-State stuff **************************/ 149 150 /* 151 * CPUID functions returning a single datum 152 */ 153 unsigned int cpuid_eax(unsigned int op); 154 unsigned int cpuid_ebx(unsigned int op); 155 unsigned int cpuid_ecx(unsigned int op); 156 unsigned int cpuid_edx(unsigned int op); 157 158 /* cpuid and cpuinfo helpers **************************/ 159 /* X86 ONLY ********************************************/ 160 #else 161 static inline int decode_pstates(unsigned int cpu, int boost_states, 162 unsigned long *pstates, int *no) 163 { return -1; }; 164 165 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val) 166 { return -1; }; 167 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val) 168 { return -1; }; 169 static inline int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val) 170 { return -1; }; 171 static inline int cpupower_intel_get_perf_bias(unsigned int cpu) 172 { return -1; }; 173 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu) 174 { return 0; }; 175 176 /* Read/Write msr ****************************/ 177 178 static inline int cpufreq_has_boost_support(unsigned int cpu, int *support, 179 int *active, int * states) 180 { return -1; } 181 182 static inline bool cpupower_amd_pstate_enabled(void) 183 { return false; } 184 static inline void amd_pstate_boost_init(unsigned int cpu, int *support, 185 int *active) 186 {} 187 static inline void amd_pstate_show_perf_and_freq(unsigned int cpu, 188 int no_rounding) 189 {} 190 191 /* cpuid and cpuinfo helpers **************************/ 192 193 static inline unsigned int cpuid_eax(unsigned int op) { return 0; }; 194 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; }; 195 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; }; 196 static inline unsigned int cpuid_edx(unsigned int op) { return 0; }; 197 #endif /* defined(__i386__) || defined(__x86_64__) */ 198 199 /* 200 * CPU State related functions 201 */ 202 extern struct bitmask *online_cpus; 203 extern struct bitmask *offline_cpus; 204 205 void get_cpustate(void); 206 void print_online_cpus(void); 207 void print_offline_cpus(void); 208 void print_speed(unsigned long speed, int no_rounding); 209 210 #endif /* __CPUPOWERUTILS_HELPERS__ */ 211