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
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
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 
148 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
149 { return -1; };
150 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
151 { return -1; };
152 static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
153 { return -1; };
154 static inline int msr_intel_get_perf_bias(unsigned int cpu)
155 { return -1; };
156 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
157 { return 0; };
158 
159 /* Read/Write msr ****************************/
160 
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 
167 static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
168 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
169 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
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