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_CPB 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 #define CPUPOWER_CAP_AMD_RDPRU 0x00000080
73 #define CPUPOWER_CAP_AMD_HW_PSTATE 0x00000100
74 #define CPUPOWER_CAP_AMD_PSTATEDEF 0x00000200
75 #define CPUPOWER_CAP_AMD_CPB_MSR 0x00000400
76
77 #define CPUPOWER_AMD_CPBDIS 0x02000000
78
79 #define MAX_HW_PSTATES 10
80
81 struct cpupower_cpu_info {
82 enum cpupower_cpu_vendor vendor;
83 unsigned int family;
84 unsigned int model;
85 unsigned int stepping;
86 /* CPU capabilities read out from cpuid */
87 unsigned long long caps;
88 };
89
90 /* get_cpu_info
91 *
92 * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo
93 *
94 * Returns 0 on success or a negative error code
95 * Only used on x86, below global's struct values are zero/unknown on
96 * other archs
97 */
98 extern int get_cpu_info(struct cpupower_cpu_info *cpu_info);
99 extern struct cpupower_cpu_info cpupower_cpu_info;
100
101
102 /* cpuid and cpuinfo helpers **************************/
103
104 /* X86 ONLY ****************************************/
105 #if defined(__i386__) || defined(__x86_64__)
106
107 #include <pci/pci.h>
108
109 /* Read/Write msr ****************************/
110 extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
111 extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
112
113 extern int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val);
114 extern int cpupower_intel_get_perf_bias(unsigned int cpu);
115 extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
116
117 /* Read/Write msr ****************************/
118
119 /* PCI stuff ****************************/
120 extern int amd_pci_get_num_boost_states(int *active, int *states);
121 extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
122 int bus, int slot, int func, int vendor,
123 int dev);
124 extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,
125 int slot, int func);
126
127 /* PCI stuff ****************************/
128
129 /* AMD HW pstate decoding **************************/
130
131 extern int decode_pstates(unsigned int cpu, int boost_states,
132 unsigned long *pstates, int *no);
133
134 /* AMD HW pstate decoding **************************/
135
136 extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
137 int *active, int * states);
138 /*
139 * CPUID functions returning a single datum
140 */
141 unsigned int cpuid_eax(unsigned int op);
142 unsigned int cpuid_ebx(unsigned int op);
143 unsigned int cpuid_ecx(unsigned int op);
144 unsigned int cpuid_edx(unsigned int op);
145
146 /* cpuid and cpuinfo helpers **************************/
147 /* X86 ONLY ********************************************/
148 #else
decode_pstates(unsigned int cpu,int boost_states,unsigned long * pstates,int * no)149 static inline int decode_pstates(unsigned int cpu, int boost_states,
150 unsigned long *pstates, int *no)
151 { return -1; };
152
read_msr(int cpu,unsigned int idx,unsigned long long * val)153 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
154 { return -1; };
write_msr(int cpu,unsigned int idx,unsigned long long val)155 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
156 { return -1; };
cpupower_intel_set_perf_bias(unsigned int cpu,unsigned int val)157 static inline int cpupower_intel_set_perf_bias(unsigned int cpu, unsigned int val)
158 { return -1; };
cpupower_intel_get_perf_bias(unsigned int cpu)159 static inline int cpupower_intel_get_perf_bias(unsigned int cpu)
160 { return -1; };
msr_intel_get_turbo_ratio(unsigned int cpu)161 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
162 { return 0; };
163
164 /* Read/Write msr ****************************/
165
cpufreq_has_boost_support(unsigned int cpu,int * support,int * active,int * states)166 static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
167 int *active, int * states)
168 { return -1; }
169
170 /* cpuid and cpuinfo helpers **************************/
171
cpuid_eax(unsigned int op)172 static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
cpuid_ebx(unsigned int op)173 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
cpuid_ecx(unsigned int op)174 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
cpuid_edx(unsigned int op)175 static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
176 #endif /* defined(__i386__) || defined(__x86_64__) */
177
178 /*
179 * CPU State related functions
180 */
181 extern struct bitmask *online_cpus;
182 extern struct bitmask *offline_cpus;
183
184 void get_cpustate(void);
185 void print_online_cpus(void);
186 void print_offline_cpus(void);
187
188 #endif /* __CPUPOWERUTILS_HELPERS__ */
189