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
35extern int run_as_root;
36extern 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
46extern 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
55static inline void dprint(const char *fmt, ...) { }
56#endif
57extern int be_verbose;
58/* Global verbose (-v) stuff *********************************/
59
60/* cpuid and cpuinfo helpers  **************************/
61enum 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
74struct 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 */
91extern int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info);
92extern struct cpupower_cpu_info cpupower_cpu_info;
93/* cpuid and cpuinfo helpers  **************************/
94
95struct cpuid_core_info {
96	int pkg;
97	int core;
98	int cpu;
99
100	/* flags */
101	unsigned int is_online:1;
102};
103
104/* CPU topology/hierarchy parsing ******************/
105struct cpupower_topology {
106	/* Amount of CPU cores, packages and threads per core in the system */
107	unsigned int cores;
108	unsigned int pkgs;
109	unsigned int threads; /* per core */
110
111	/* Array gets mallocated with cores entries, holding per core info */
112	struct cpuid_core_info *core_info;
113};
114
115extern int get_cpu_topology(struct cpupower_topology *cpu_top);
116extern void cpu_topology_release(struct cpupower_topology cpu_top);
117
118/* CPU topology/hierarchy parsing ******************/
119
120/* X86 ONLY ****************************************/
121#if defined(__i386__) || defined(__x86_64__)
122
123#include <pci/pci.h>
124
125/* Read/Write msr ****************************/
126extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
127extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
128
129extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
130extern int msr_intel_get_perf_bias(unsigned int cpu);
131extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
132
133/* Read/Write msr ****************************/
134
135/* PCI stuff ****************************/
136extern int amd_pci_get_num_boost_states(int *active, int *states);
137extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
138				    int bus, int slot, int func, int vendor,
139				    int dev);
140extern struct pci_dev *pci_slot_func_init(struct pci_access **pacc,
141					      int slot, int func);
142
143/* PCI stuff ****************************/
144
145/* AMD HW pstate decoding **************************/
146
147extern int decode_pstates(unsigned int cpu, unsigned int cpu_family,
148			  int boost_states, unsigned long *pstates, int *no);
149
150/* AMD HW pstate decoding **************************/
151
152extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
153				     int *active, int * states);
154/*
155 * CPUID functions returning a single datum
156 */
157unsigned int cpuid_eax(unsigned int op);
158unsigned int cpuid_ebx(unsigned int op);
159unsigned int cpuid_ecx(unsigned int op);
160unsigned int cpuid_edx(unsigned int op);
161
162/* cpuid and cpuinfo helpers  **************************/
163/* X86 ONLY ********************************************/
164#else
165static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family,
166				 int boost_states, unsigned long *pstates,
167				 int *no)
168{ return -1; };
169
170static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
171{ return -1; };
172static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
173{ return -1; };
174static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
175{ return -1; };
176static inline int msr_intel_get_perf_bias(unsigned int cpu)
177{ return -1; };
178static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
179{ return 0; };
180
181/* Read/Write msr ****************************/
182
183static inline int cpufreq_has_boost_support(unsigned int cpu, int *support,
184					    int *active, int * states)
185{ return -1; }
186
187/* cpuid and cpuinfo helpers  **************************/
188
189static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
190static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
191static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
192static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
193#endif /* defined(__i386__) || defined(__x86_64__) */
194
195#endif /* __CPUPOWERUTILS_HELPERS__ */
196