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
35extern int run_as_root;
36extern int base_cpu;
37extern 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
47extern 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
56static inline void dprint(const char *fmt, ...) { }
57#endif
58extern int be_verbose;
59/* Global verbose (-v) stuff *********************************/
60
61/* cpuid and cpuinfo helpers  **************************/
62enum 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#define CPUPOWER_CAP_AMD_RDPRU		0x00000080
73
74#define CPUPOWER_AMD_CPBDIS		0x02000000
75
76#define MAX_HW_PSTATES 10
77
78struct 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 */
95extern int get_cpu_info(struct cpupower_cpu_info *cpu_info);
96extern 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 ****************************/
105extern int read_msr(int cpu, unsigned int idx, unsigned long long *val);
106extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
107
108extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
109extern int msr_intel_get_perf_bias(unsigned int cpu);
110extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
111
112/* Read/Write msr ****************************/
113
114/* PCI stuff ****************************/
115extern int amd_pci_get_num_boost_states(int *active, int *states);
116extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain,
117				    int bus, int slot, int func, int vendor,
118				    int dev);
119extern 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
126extern 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
131extern int cpufreq_has_boost_support(unsigned int cpu, int *support,
132				     int *active, int * states);
133/*
134 * CPUID functions returning a single datum
135 */
136unsigned int cpuid_eax(unsigned int op);
137unsigned int cpuid_ebx(unsigned int op);
138unsigned int cpuid_ecx(unsigned int op);
139unsigned int cpuid_edx(unsigned int op);
140
141/* cpuid and cpuinfo helpers  **************************/
142/* X86 ONLY ********************************************/
143#else
144static 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
149static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val)
150{ return -1; };
151static inline int write_msr(int cpu, unsigned int idx, unsigned long long val)
152{ return -1; };
153static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
154{ return -1; };
155static inline int msr_intel_get_perf_bias(unsigned int cpu)
156{ return -1; };
157static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
158{ return 0; };
159
160/* Read/Write msr ****************************/
161
162static 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
168static inline unsigned int cpuid_eax(unsigned int op) { return 0; };
169static inline unsigned int cpuid_ebx(unsigned int op) { return 0; };
170static inline unsigned int cpuid_ecx(unsigned int op) { return 0; };
171static inline unsigned int cpuid_edx(unsigned int op) { return 0; };
172#endif /* defined(__i386__) || defined(__x86_64__) */
173
174#endif /* __CPUPOWERUTILS_HELPERS__ */
175