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 
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 struct bitmask *cpus_chosen;
37 
38 /* Global verbose (-d) stuff *********************************/
39 /*
40  * define DEBUG via global Makefile variable
41  * Debug output is sent to stderr, do:
42  * cpupower monitor 2>/tmp/debug
43  * to split debug output away from normal output
44 */
45 #ifdef DEBUG
46 extern int be_verbose;
47 
48 #define dprint(fmt, ...) {					\
49 		if (be_verbose) {				\
50 			fprintf(stderr, "%s: " fmt,		\
51 				__func__, ##__VA_ARGS__);	\
52 		}						\
53 	}
54 #else
55 static inline void dprint(const char *fmt, ...) { }
56 #endif
57 extern int be_verbose;
58 /* Global verbose (-v) stuff *********************************/
59 
60 /* cpuid and cpuinfo helpers  **************************/
61 enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,
62 			  X86_VENDOR_AMD, X86_VENDOR_MAX};
63 
64 #define CPUPOWER_CAP_INV_TSC		0x00000001
65 #define CPUPOWER_CAP_APERF		0x00000002
66 #define CPUPOWER_CAP_AMD_CBP		0x00000004
67 #define CPUPOWER_CAP_PERF_BIAS		0x00000008
68 #define CPUPOWER_CAP_HAS_TURBO_RATIO	0x00000010
69 #define CPUPOWER_CAP_IS_SNB		0x00000020
70 #define CPUPOWER_CAP_INTEL_IDA		0x00000040
71 
72 #define MAX_HW_PSTATES 10
73 
74 struct cpupower_cpu_info {
75 	enum cpupower_cpu_vendor vendor;
76 	unsigned int family;
77 	unsigned int model;
78 	unsigned int stepping;
79 	/* CPU capabilities read out from cpuid */
80 	unsigned long long caps;
81 };
82 
83 /* get_cpu_info
84  *
85  * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo
86  *
87  * Returns 0 on success or a negativ error code
88  * Only used on x86, below global's struct values are zero/unknown on
89  * other archs
90  */
91 extern int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info);
92 extern struct cpupower_cpu_info cpupower_cpu_info;
93 /* cpuid and cpuinfo helpers  **************************/
94 
95 
96 /* CPU topology/hierarchy parsing ******************/
97 struct cpupower_topology {
98 	/* Amount of CPU cores, packages and threads per core in the system */
99 	unsigned int cores;
100 	unsigned int pkgs;
101 	unsigned int threads; /* per core */
102 
103 	/* Array gets mallocated with cores entries, holding per core info */
104 	struct {
105 		int pkg;
106 		int core;
107 		int cpu;
108 
109 		/* flags */
110 		unsigned int is_online:1;
111 	} *core_info;
112 };
113 
114 extern int get_cpu_topology(struct cpupower_topology *cpu_top);
115 extern void cpu_topology_release(struct cpupower_topology cpu_top);
116 /* CPU topology/hierarchy parsing ******************/
117 
118 /* X86 ONLY ****************************************/
119 #if defined(__i386__) || defined(__x86_64__)
120 
121 #include <pci/pci.h>
122 
123 /* Read/Write msr ****************************/
124 extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
125 extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
126 
127 extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
128 extern int msr_intel_get_perf_bias(unsigned int cpu);
129 extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
130 
131 /* Read/Write msr ****************************/
132 
133 /* PCI stuff ****************************/
134 extern int amd_pci_get_num_boost_states(int *active, int *states);
135 extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
136 				    int bus, int slot, int func, int vendor,
137 				    int dev);
138 extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,
139 					      int slot, int func);
140 
141 /* PCI stuff ****************************/
142 
143 /* AMD HW pstate decoding **************************/
144 
145 extern int decode_pstates(unsigned int cpu, unsigned int cpu_family,
146 			  int boost_states, unsigned long *pstates, int *no);
147 
148 /* AMD HW pstate decoding **************************/
149 
150 extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
151 				     int *active, int * states);
152 /*
153  * CPUID functions returning a single datum
154  */
155 unsigned int cpuid_eax(unsigned int op);
156 unsigned int cpuid_ebx(unsigned int op);
157 unsigned int cpuid_ecx(unsigned int op);
158 unsigned int cpuid_edx(unsigned int op);
159 
160 /* cpuid and cpuinfo helpers  **************************/
161 /* X86 ONLY ********************************************/
162 #else
163 static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family,
164 				 int boost_states, unsigned long *pstates,
165 				 int *no)
166 { return -1; };
167 
168 static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
169 { return -1; };
170 static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
171 { return -1; };
172 static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
173 { return -1; };
174 static inline int msr_intel_get_perf_bias(unsigned int cpu)
175 { return -1; };
176 static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
177 { return 0; };
178 
179 /* Read/Write msr ****************************/
180 
181 static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
182 					    int *active, int * states)
183 { return -1; }
184 
185 /* cpuid and cpuinfo helpers  **************************/
186 
187 static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
188 static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
189 static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
190 static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
191 #endif /* defined(__i386__) || defined(__x86_64__) */
192 
193 #endif /* __CPUPOWERUTILS_HELPERS__ */
194