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
15 #include "helpers/bitmask.h"
16 #include <cpupower.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
35 extern int run_as_root;
36 extern int base_cpu;
37 extern 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
47 extern 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
dprint(const char * fmt,...)56 static inline void dprint(const char *fmt, ...) { }
57 #endif
58 extern int be_verbose;
59 /* Global verbose (-v) stuff *********************************/
60
61 /* cpuid and cpuinfo helpers **************************/
62 enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,
63 X86_VENDOR_AMD, X86_VENDOR_HYGON, 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 CPUPOWER_AMD_CPBDIS 0x02000000
74
75 #define MAX_HW_PSTATES 10
76
77 struct cpupower_cpu_info {
78 enum cpupower_cpu_vendor vendor;
79 unsigned int family;
80 unsigned int model;
81 unsigned int stepping;
82 /* CPU capabilities read out from cpuid */
83 unsigned long long caps;
84 };
85
86 /* get_cpu_info
87 *
88 * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo
89 *
90 * Returns 0 on success or a negative error code
91 * Only used on x86, below global's struct values are zero/unknown on
92 * other archs
93 */
94 extern int get_cpu_info(struct cpupower_cpu_info *cpu_info);
95 extern struct cpupower_cpu_info cpupower_cpu_info;
96 /* cpuid and cpuinfo helpers **************************/
97
98 /* X86 ONLY ****************************************/
99 #if defined(__i386__) || defined(__x86_64__)
100
101 #include <pci/pci.h>
102
103 /* Read/Write msr ****************************/
104 extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
105 extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
106
107 extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
108 extern int msr_intel_get_perf_bias(unsigned int cpu);
109 extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
110
111 /* Read/Write msr ****************************/
112
113 /* PCI stuff ****************************/
114 extern int amd_pci_get_num_boost_states(int *active, int *states);
115 extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
116 int bus, int slot, int func, int vendor,
117 int dev);
118 extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,
119 int slot, int func);
120
121 /* PCI stuff ****************************/
122
123 /* AMD HW pstate decoding **************************/
124
125 extern int decode_pstates(unsigned int cpu, unsigned int cpu_family,
126 int boost_states, unsigned long *pstates, int *no);
127
128 /* AMD HW pstate decoding **************************/
129
130 extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
131 int *active, int * states);
132 /*
133 * CPUID functions returning a single datum
134 */
135 unsigned int cpuid_eax(unsigned int op);
136 unsigned int cpuid_ebx(unsigned int op);
137 unsigned int cpuid_ecx(unsigned int op);
138 unsigned int cpuid_edx(unsigned int op);
139
140 /* cpuid and cpuinfo helpers **************************/
141 /* X86 ONLY ********************************************/
142 #else
decode_pstates(unsigned int cpu,unsigned int cpu_family,int boost_states,unsigned long * pstates,int * no)143 static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family,
144 int boost_states, unsigned long *pstates,
145 int *no)
146 { return -1; };
147
read_msr(int cpu,unsigned int idx,unsigned long long * val)148 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
149 { return -1; };
write_msr(int cpu,unsigned int idx,unsigned long long val)150 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
151 { return -1; };
msr_intel_set_perf_bias(unsigned int cpu,unsigned int val)152 static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
153 { return -1; };
msr_intel_get_perf_bias(unsigned int cpu)154 static inline int msr_intel_get_perf_bias(unsigned int cpu)
155 { return -1; };
msr_intel_get_turbo_ratio(unsigned int cpu)156 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
157 { return 0; };
158
159 /* Read/Write msr ****************************/
160
cpufreq_has_boost_support(unsigned int cpu,int * support,int * active,int * states)161 static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
162 int *active, int * states)
163 { return -1; }
164
165 /* cpuid and cpuinfo helpers **************************/
166
cpuid_eax(unsigned int op)167 static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
cpuid_ebx(unsigned int op)168 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
cpuid_ecx(unsigned int op)169 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
cpuid_edx(unsigned int op)170 static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
171 #endif /* defined(__i386__) || defined(__x86_64__) */
172
173 #endif /* __CPUPOWERUTILS_HELPERS__ */
174