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#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 struct bitmask *cpus_chosen;
  38
  39/* Global verbose (-d) stuff *********************************/
  40/*
  41 * define DEBUG via global Makefile variable
  42 * Debug output is sent to stderr, do:
  43 * cpupower monitor 2>/tmp/debug
  44 * to split debug output away from normal output
  45*/
  46#ifdef DEBUG
  47extern int be_verbose;
  48
  49#define dprint(fmt, ...) {                                      \
  50                if (be_verbose) {                               \
  51                        fprintf(stderr, "%s: " fmt,             \
  52                                __func__, ##__VA_ARGS__);       \
  53                }                                               \
  54        }
  55#else
  56static inline void dprint(const char *fmt, ...) { }
  57#endif
  58extern int be_verbose;
  59/* Global verbose (-v) stuff *********************************/
  60
  61/* cpuid and cpuinfo helpers  **************************/
  62enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,
  63                          X86_VENDOR_AMD, X86_VENDOR_MAX};
  64
  65#define CPUPOWER_CAP_INV_TSC            0x00000001
  66#define CPUPOWER_CAP_APERF              0x00000002
  67#define CPUPOWER_CAP_AMD_CBP            0x00000004
  68#define CPUPOWER_CAP_PERF_BIAS          0x00000008
  69#define CPUPOWER_CAP_HAS_TURBO_RATIO    0x00000010
  70#define CPUPOWER_CAP_IS_SNB             0x00000020
  71#define CPUPOWER_CAP_INTEL_IDA          0x00000040
  72
  73#define MAX_HW_PSTATES 10
  74
  75struct cpupower_cpu_info {
  76        enum cpupower_cpu_vendor vendor;
  77        unsigned int family;
  78        unsigned int model;
  79        unsigned int stepping;
  80        /* CPU capabilities read out from cpuid */
  81        unsigned long long caps;
  82};
  83
  84/* get_cpu_info
  85 *
  86 * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo
  87 *
  88 * Returns 0 on success or a negativ error code
  89 * Only used on x86, below global's struct values are zero/unknown on
  90 * other archs
  91 */
  92extern int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info);
  93extern struct cpupower_cpu_info cpupower_cpu_info;
  94/* cpuid and cpuinfo helpers  **************************/
  95
  96/* X86 ONLY ****************************************/
  97#if defined(__i386__) || defined(__x86_64__)
  98
  99#include <pci/pci.h>
 100
 101/* Read/Write msr ****************************/
 102extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
 103extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
 104
 105extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
 106extern int msr_intel_get_perf_bias(unsigned int cpu);
 107extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
 108
 109/* Read/Write msr ****************************/
 110
 111/* PCI stuff ****************************/
 112extern int amd_pci_get_num_boost_states(int *active, int *states);
 113extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
 114                                    int bus, int slot, int func, int vendor,
 115                                    int dev);
 116extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,
 117                                              int slot, int func);
 118
 119/* PCI stuff ****************************/
 120
 121/* AMD HW pstate decoding **************************/
 122
 123extern int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 124                          int boost_states, unsigned long *pstates, int *no);
 125
 126/* AMD HW pstate decoding **************************/
 127
 128extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
 129                                     int *active, int * states);
 130/*
 131 * CPUID functions returning a single datum
 132 */
 133unsigned int cpuid_eax(unsigned int op);
 134unsigned int cpuid_ebx(unsigned int op);
 135unsigned int cpuid_ecx(unsigned int op);
 136unsigned int cpuid_edx(unsigned int op);
 137
 138/* cpuid and cpuinfo helpers  **************************/
 139/* X86 ONLY ********************************************/
 140#else
 141static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 142                                 int boost_states, unsigned long *pstates,
 143                                 int *no)
 144{ return -1; };
 145
 146static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
 147{ return -1; };
 148static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
 149{ return -1; };
 150static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
 151{ return -1; };
 152static inline int msr_intel_get_perf_bias(unsigned int cpu)
 153{ return -1; };
 154static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
 155{ return 0; };
 156
 157/* Read/Write msr ****************************/
 158
 159static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
 160                                            int *active, int * states)
 161{ return -1; }
 162
 163/* cpuid and cpuinfo helpers  **************************/
 164
 165static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
 166static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
 167static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
 168static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
 169#endif /* defined(__i386__) || defined(__x86_64__) */
 170
 171#endif /* __CPUPOWERUTILS_HELPERS__ */
 172