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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 
36 extern int run_as_root;
37 extern int base_cpu;
38 extern 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
48 extern 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
dprint(const char * fmt,...)57 static inline void dprint(const char *fmt, ...) { }
58 #endif
59 extern int be_verbose;
60 /* Global verbose (-v) stuff *********************************/
61 
62 /* cpuid and cpuinfo helpers  **************************/
63 enum 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 
78 struct 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  */
95 extern int get_cpu_info(struct cpupower_cpu_info *cpu_info);
96 extern 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 ****************************/
105 extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
106 extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
107 
108 extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
109 extern int msr_intel_get_perf_bias(unsigned int cpu);
110 extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
111 
112 /* Read/Write msr ****************************/
113 
114 /* PCI stuff ****************************/
115 extern int amd_pci_get_num_boost_states(int *active, int *states);
116 extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
117 				    int bus, int slot, int func, int vendor,
118 				    int dev);
119 extern 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 
126 extern 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 
131 extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
132 				     int *active, int * states);
133 /*
134  * CPUID functions returning a single datum
135  */
136 unsigned int cpuid_eax(unsigned int op);
137 unsigned int cpuid_ebx(unsigned int op);
138 unsigned int cpuid_ecx(unsigned int op);
139 unsigned int cpuid_edx(unsigned int op);
140 
141 /* cpuid and cpuinfo helpers  **************************/
142 /* X86 ONLY ********************************************/
143 #else
decode_pstates(unsigned int cpu,unsigned int cpu_family,int boost_states,unsigned long * pstates,int * no)144 static 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 
read_msr(int cpu,unsigned int idx,unsigned long long * val)149 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
150 { return -1; };
write_msr(int cpu,unsigned int idx,unsigned long long val)151 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
152 { return -1; };
msr_intel_set_perf_bias(unsigned int cpu,unsigned int val)153 static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
154 { return -1; };
msr_intel_get_perf_bias(unsigned int cpu)155 static inline int msr_intel_get_perf_bias(unsigned int cpu)
156 { return -1; };
msr_intel_get_turbo_ratio(unsigned int cpu)157 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
158 { return 0; };
159 
160 /* Read/Write msr ****************************/
161 
cpufreq_has_boost_support(unsigned int cpu,int * support,int * active,int * states)162 static 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 
cpuid_eax(unsigned int op)168 static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
cpuid_ebx(unsigned int op)169 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
cpuid_ecx(unsigned int op)170 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
cpuid_edx(unsigned int op)171 static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
172 #endif /* defined(__i386__) || defined(__x86_64__) */
173 
174 #endif /* __CPUPOWERUTILS_HELPERS__ */
175