LXR linux/tools/power/cpupower/utils/helpers/helpers.h

   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
  35extern int run_as_root;
  36extern 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
  46extern 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
  55static inline void dprint(const char *fmt, ...) { }
  56#endif
  57extern int be_verbose;
  58/* Global verbose (-v) stuff *********************************/
  59
  60/* cpuid and cpuinfo helpers  **************************/
  61enum 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             0x00000011
  70#define CPUPOWER_CAP_INTEL_IDA          0x00000012
  71
  72#define MAX_HW_PSTATES 10
  73
  74struct 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 */
  91extern int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info);
  92extern struct cpupower_cpu_info cpupower_cpu_info;
  93/* cpuid and cpuinfo helpers  **************************/
  94
  95
  96/* CPU topology/hierarchy parsing ******************/
  97struct cpupower_topology {
  98        /* Amount of CPU cores, packages and threads per core in the system */
  99        unsigned int cores;
 100        unsigned int pkgs;
 101        unsigned int threads; /* per core */
 102
 103        /* Array gets mallocated with cores entries, holding per core info */
 104        struct {
 105                int pkg;
 106                int core;
 107                int cpu;
 108
 109                /* flags */
 110                unsigned int is_online:1;
 111        } *core_info;
 112};
 113
 114extern int get_cpu_topology(struct cpupower_topology *cpu_top);
 115extern void cpu_topology_release(struct cpupower_topology cpu_top);
 116/* CPU topology/hierarchy parsing ******************/
 117
 118/* X86 ONLY ****************************************/
 119#if defined(__i386__) || defined(__x86_64__)
 120
 121#include <pci/pci.h>
 122
 123/* Read/Write msr ****************************/
 124extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
 125extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
 126
 127extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
 128extern int msr_intel_get_perf_bias(unsigned int cpu);
 129extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
 130
 131/* Read/Write msr ****************************/
 132
 133/* PCI stuff ****************************/
 134extern int amd_pci_get_num_boost_states(int *active, int *states);
 135extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int vendor_id,
 136                                    int *dev_ids);
 137
 138/* PCI stuff ****************************/
 139
 140/* AMD HW pstate decoding **************************/
 141
 142extern int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 143                          int boost_states, unsigned long *pstates, int *no);
 144
 145/* AMD HW pstate decoding **************************/
 146
 147extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
 148                                     int *active, int * states);
 149/*
 150 * CPUID functions returning a single datum
 151 */
 152unsigned int cpuid_eax(unsigned int op);
 153unsigned int cpuid_ebx(unsigned int op);
 154unsigned int cpuid_ecx(unsigned int op);
 155unsigned int cpuid_edx(unsigned int op);
 156
 157/* cpuid and cpuinfo helpers  **************************/
 158/* X86 ONLY ********************************************/
 159#else
 160static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 161                                 int boost_states, unsigned long *pstates,
 162                                 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 msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
 170{ return -1; };
 171static inline int msr_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
 182/* cpuid and cpuinfo helpers  **************************/
 183
 184static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
 185static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
 186static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
 187static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
 188#endif /* defined(__i386__) || defined(__x86_64__) */
 189
 190#endif /* __CPUPOWERUTILS_HELPERS__ */
 191