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 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_MAX};
  65
  66#define CPUPOWER_CAP_INV_TSC            0x00000001
  67#define CPUPOWER_CAP_APERF              0x00000002
  68#define CPUPOWER_CAP_AMD_CBP            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
  74#define CPUPOWER_AMD_CPBDIS             0x02000000
  75
  76#define MAX_HW_PSTATES 10
  77
  78struct cpupower_cpu_info {
  79        enum cpupower_cpu_vendor vendor;
  80        unsigned int family;
  81        unsigned int model;
  82        unsigned int stepping;
  83        /* CPU capabilities read out from cpuid */
  84        unsigned long long caps;
  85};
  86
  87/* get_cpu_info
  88 *
  89 * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo
  90 *
  91 * Returns 0 on success or a negative error code
  92 * Only used on x86, below global's struct values are zero/unknown on
  93 * other archs
  94 */
  95extern int get_cpu_info(struct cpupower_cpu_info *cpu_info);
  96extern struct cpupower_cpu_info cpupower_cpu_info;
  97/* cpuid and cpuinfo helpers  **************************/
  98
  99/* X86 ONLY ****************************************/
 100#if defined(__i386__) || defined(__x86_64__)
 101
 102#include <pci/pci.h>
 103
 104/* Read/Write msr ****************************/
 105extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
 106extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
 107
 108extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
 109extern int msr_intel_get_perf_bias(unsigned int cpu);
 110extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
 111
 112/* Read/Write msr ****************************/
 113
 114/* PCI stuff ****************************/
 115extern int amd_pci_get_num_boost_states(int *active, int *states);
 116extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
 117                                    int bus, int slot, int func, int vendor,
 118                                    int dev);
 119extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,
 120                                              int slot, int func);
 121
 122/* PCI stuff ****************************/
 123
 124/* AMD HW pstate decoding **************************/
 125
 126extern int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 127                          int boost_states, unsigned long *pstates, int *no);
 128
 129/* AMD HW pstate decoding **************************/
 130
 131extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
 132                                     int *active, int * states);
 133/*
 134 * CPUID functions returning a single datum
 135 */
 136unsigned int cpuid_eax(unsigned int op);
 137unsigned int cpuid_ebx(unsigned int op);
 138unsigned int cpuid_ecx(unsigned int op);
 139unsigned int cpuid_edx(unsigned int op);
 140
 141/* cpuid and cpuinfo helpers  **************************/
 142/* X86 ONLY ********************************************/
 143#else
 144static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 145                                 int boost_states, unsigned long *pstates,
 146                                 int *no)
 147{ return -1; };
 148
 149static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
 150{ return -1; };
 151static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
 152{ return -1; };
 153static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
 154{ return -1; };
 155static inline int msr_intel_get_perf_bias(unsigned int cpu)
 156{ return -1; };
 157static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
 158{ return 0; };
 159
 160/* Read/Write msr ****************************/
 161
 162static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
 163                                            int *active, int * states)
 164{ return -1; }
 165
 166/* cpuid and cpuinfo helpers  **************************/
 167
 168static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
 169static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
 170static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
 171static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
 172#endif /* defined(__i386__) || defined(__x86_64__) */
 173
 174#endif /* __CPUPOWERUTILS_HELPERS__ */
 175