helpers.h (6388B)
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); 118 119/* Read/Write msr ****************************/ 120 121/* PCI stuff ****************************/ 122extern int amd_pci_get_num_boost_states(int *active, int *states); 123extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain, 124 int bus, int slot, int func, int vendor, 125 int dev); 126extern 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 133extern int decode_pstates(unsigned int cpu, int boost_states, 134 unsigned long *pstates, int *no); 135 136/* AMD HW pstate decoding **************************/ 137 138extern int cpufreq_has_boost_support(unsigned int cpu, int *support, 139 int *active, int * states); 140 141/* AMD P-State stuff **************************/ 142bool cpupower_amd_pstate_enabled(void); 143void amd_pstate_boost_init(unsigned int cpu, 144 int *support, int *active); 145void 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 */ 153unsigned int cpuid_eax(unsigned int op); 154unsigned int cpuid_ebx(unsigned int op); 155unsigned int cpuid_ecx(unsigned int op); 156unsigned int cpuid_edx(unsigned int op); 157 158/* cpuid and cpuinfo helpers **************************/ 159/* X86 ONLY ********************************************/ 160#else 161static inline int decode_pstates(unsigned int cpu, int boost_states, 162 unsigned long *pstates, int *no) 163{ return -1; }; 164 165static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val) 166{ return -1; }; 167static inline int write_msr(int cpu, unsigned int idx, unsigned long long val) 168{ return -1; }; 169static inline int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val) 170{ return -1; }; 171static inline int cpupower_intel_get_perf_bias(unsigned int cpu) 172{ return -1; }; 173static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu) 174{ return 0; }; 175 176/* Read/Write msr ****************************/ 177 178static inline int cpufreq_has_boost_support(unsigned int cpu, int *support, 179 int *active, int * states) 180{ return -1; } 181 182static inline bool cpupower_amd_pstate_enabled(void) 183{ return false; } 184static inline void amd_pstate_boost_init(unsigned int cpu, int *support, 185 int *active) 186{} 187static inline void amd_pstate_show_perf_and_freq(unsigned int cpu, 188 int no_rounding) 189{} 190 191/* cpuid and cpuinfo helpers **************************/ 192 193static inline unsigned int cpuid_eax(unsigned int op) { return 0; }; 194static inline unsigned int cpuid_ebx(unsigned int op) { return 0; }; 195static inline unsigned int cpuid_ecx(unsigned int op) { return 0; }; 196static 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 */ 202extern struct bitmask *online_cpus; 203extern struct bitmask *offline_cpus; 204 205void get_cpustate(void); 206void print_online_cpus(void); 207void print_offline_cpus(void); 208void print_speed(unsigned long speed, int no_rounding); 209 210#endif /* __CPUPOWERUTILS_HELPERS__ */