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 36extern int run_as_root; 37extern int base_cpu; 38extern 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 48extern 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 57static inline void dprint(const char *fmt, ...) { } 58#endif 59extern int be_verbose; 60/* Global verbose (-v) stuff *********************************/ 61 62/* cpuid and cpuinfo helpers **************************/ 63enum 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 83struct 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 */ 100extern int get_cpu_info(struct cpupower_cpu_info *cpu_info); 101extern 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 ****************************/ 112extern int read_msr(int cpu, unsigned int idx, unsigned long long *val); 113extern int write_msr(int cpu, unsigned int idx, unsigned long long val); 114 115extern int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val); 116extern int cpupower_intel_get_perf_bias(unsigned int cpu); 117extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu); 118 119extern int cpupower_set_epp(unsigned int cpu, char *epp); 120extern int cpupower_set_amd_pstate_mode(char *mode); 121extern int cpupower_set_turbo_boost(int turbo_boost); 122 123/* Read/Write msr ****************************/ 124 125/* PCI stuff ****************************/ 126extern int amd_pci_get_num_boost_states(int *active, int *states); 127extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain, 128 int bus, int slot, int func, int vendor, 129 int dev); 130extern 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 137extern int decode_pstates(unsigned int cpu, int boost_states, 138 unsigned long *pstates, int *no); 139 140/* AMD HW pstate decoding **************************/ 141 142extern int cpufreq_has_boost_support(unsigned int cpu, int *support, 143 int *active, int * states); 144 145/* AMD P-State stuff **************************/ 146bool cpupower_amd_pstate_enabled(void); 147void amd_pstate_boost_init(unsigned int cpu, 148 int *support, int *active); 149void 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 */ 157unsigned int cpuid_eax(unsigned int op); 158unsigned int cpuid_ebx(unsigned int op); 159unsigned int cpuid_ecx(unsigned int op); 160unsigned int cpuid_edx(unsigned int op); 161 162/* cpuid and cpuinfo helpers **************************/ 163/* X86 ONLY ********************************************/ 164#else 165static inline int decode_pstates(unsigned int cpu, int boost_states, 166 unsigned long *pstates, int *no) 167{ return -1; }; 168 169static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val) 170{ return -1; }; 171static inline int write_msr(int cpu, unsigned int idx, unsigned long long val) 172{ return -1; }; 173static inline int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val) 174{ return -1; }; 175static inline int cpupower_intel_get_perf_bias(unsigned int cpu) 176{ return -1; }; 177static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu) 178{ return 0; }; 179 180static inline int cpupower_set_epp(unsigned int cpu, char *epp) 181{ return -1; }; 182static inline int cpupower_set_amd_pstate_mode(char *mode) 183{ return -1; }; 184static inline int cpupower_set_turbo_boost(int turbo_boost) 185{ return -1; }; 186 187/* Read/Write msr ****************************/ 188 189static inline int cpufreq_has_boost_support(unsigned int cpu, int *support, 190 int *active, int * states) 191{ return -1; } 192 193static inline bool cpupower_amd_pstate_enabled(void) 194{ return false; } 195static inline void amd_pstate_boost_init(unsigned int cpu, int *support, 196 int *active) 197{} 198static inline void amd_pstate_show_perf_and_freq(unsigned int cpu, 199 int no_rounding) 200{} 201 202/* cpuid and cpuinfo helpers **************************/ 203 204static inline unsigned int cpuid_eax(unsigned int op) { return 0; }; 205static inline unsigned int cpuid_ebx(unsigned int op) { return 0; }; 206static inline unsigned int cpuid_ecx(unsigned int op) { return 0; }; 207static 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 */ 213extern struct bitmask *online_cpus; 214extern struct bitmask *offline_cpus; 215 216void get_cpustate(void); 217void print_online_cpus(void); 218void print_offline_cpus(void); 219void print_speed(unsigned long speed, int no_rounding); 220 221#endif /* __CPUPOWERUTILS_HELPERS__ */ 222