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Diffstat (limited to 'tools/power/cpupower/utils/helpers/helpers.h')
| -rw-r--r-- | tools/power/cpupower/utils/helpers/helpers.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/helpers/helpers.h b/tools/power/cpupower/utils/helpers/helpers.h new file mode 100644 index 000000000000..a487dadb4cf0 --- /dev/null +++ b/tools/power/cpupower/utils/helpers/helpers.h @@ -0,0 +1,180 @@ +/* + * (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc. + * + * Licensed under the terms of the GNU GPL License version 2. + * + * Miscellaneous helpers which do not fit or are worth + * to put into separate headers + */ + +#ifndef __CPUPOWERUTILS_HELPERS__ +#define __CPUPOWERUTILS_HELPERS__ + +#include <libintl.h> +#include <locale.h> + +#include "helpers/bitmask.h" + +/* Internationalization ****************************/ +#define _(String) gettext(String) +#ifndef gettext_noop +#define gettext_noop(String) String +#endif +#define N_(String) gettext_noop (String) +/* Internationalization ****************************/ + +extern int run_as_root; +extern struct bitmask *cpus_chosen; + +/* Global verbose (-d) stuff *********************************/ +/* + * define DEBUG via global Makefile variable + * Debug output is sent to stderr, do: + * cpupower monitor 2>/tmp/debug + * to split debug output away from normal output +*/ +#ifdef DEBUG +extern int be_verbose; + +#define dprint(fmt, ...) { \ + if (be_verbose) { \ + fprintf(stderr, "%s: " fmt, \ + __FUNCTION__, ##__VA_ARGS__); \ + } \ + } +#else +static inline void dprint(const char *fmt, ...) { } +#endif +extern int be_verbose; +/* Global verbose (-v) stuff *********************************/ + +/* cpuid and cpuinfo helpers **************************/ +enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL, + X86_VENDOR_AMD, X86_VENDOR_MAX}; + +#define CPUPOWER_CAP_INV_TSC 0x00000001 +#define CPUPOWER_CAP_APERF 0x00000002 +#define CPUPOWER_CAP_AMD_CBP 0x00000004 +#define CPUPOWER_CAP_PERF_BIAS 0x00000008 + +#define MAX_HW_PSTATES 10 + +struct cpupower_cpu_info { + enum cpupower_cpu_vendor vendor; + unsigned int family; + unsigned int model; + unsigned int stepping; + /* CPU capabilities read out from cpuid */ + unsigned long long caps; +}; + +/* get_cpu_info + * + * Extract CPU vendor, family, model, stepping info from /proc/cpuinfo + * + * Returns 0 on success or a negativ error code + * Only used on x86, below global's struct values are zero/unknown on + * other archs + */ +extern int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info); +extern struct cpupower_cpu_info cpupower_cpu_info; +/* cpuid and cpuinfo helpers **************************/ + + +/* CPU topology/hierarchy parsing ******************/ +struct cpupower_topology { + /* Amount of CPU cores, packages and threads per core in the system */ + unsigned int cores; + unsigned int pkgs; + unsigned int threads; /* per core */ + + /* Array gets mallocated with cores entries, holding per core info */ + struct { + int pkg; + int core; + int cpu; + } *core_info; +}; + +extern int get_cpu_topology(struct cpupower_topology *cpu_top); +extern void cpu_topology_release(struct cpupower_topology cpu_top); +/* CPU topology/hierarchy parsing ******************/ + +/* X86 ONLY ****************************************/ +#if defined(__i386__) || defined(__x86_64__) + +#include <pci/pci.h> + +/* Read/Write msr ****************************/ +extern int read_msr(int cpu, unsigned int idx, unsigned long long *val); +extern int write_msr(int cpu, unsigned int idx, unsigned long long val); + +extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val); +extern int msr_intel_get_perf_bias(unsigned int cpu); + +extern int msr_intel_has_boost_support(unsigned int cpu); +extern int msr_intel_boost_is_active(unsigned int cpu); + +/* Read/Write msr ****************************/ + +/* PCI stuff ****************************/ +extern int amd_pci_get_num_boost_states(int *active, int *states); +extern struct pci_dev *pci_acc_init(struct pci_access **pacc, int vendor_id, + int *dev_ids); + +/* PCI stuff ****************************/ + +/* AMD HW pstate decoding **************************/ + +extern int decode_pstates(unsigned int cpu, unsigned int cpu_family, + int boost_states, unsigned long *pstates, int *no); + +/* AMD HW pstate decoding **************************/ + +extern int cpufreq_has_boost_support(unsigned int cpu, int *support, + int *active, int * states); +/* + * CPUID functions returning a single datum + */ +unsigned int cpuid_eax(unsigned int op); +unsigned int cpuid_ebx(unsigned int op); +unsigned int cpuid_ecx(unsigned int op); +unsigned int cpuid_edx(unsigned int op); + +/* cpuid and cpuinfo helpers **************************/ +/* X86 ONLY ********************************************/ +#else +static inline int decode_pstates(unsigned int cpu, unsigned int cpu_family, + int boost_states, unsigned long *pstates, + int *no) +{ return -1; }; + +static inline int read_msr(int cpu, unsigned int idx, unsigned long long *val) +{ return -1; }; +static inline int write_msr(int cpu, unsigned int idx, unsigned long long val) +{ return -1; }; +static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val) +{ return -1; }; +static inline int msr_intel_get_perf_bias(unsigned int cpu) +{ return -1; }; + +static inline int msr_intel_has_boost_support(unsigned int cpu) +{ return -1; }; +static inline int msr_intel_boost_is_active(unsigned int cpu) +{ return -1; }; + +/* Read/Write msr ****************************/ + +static inline int cpufreq_has_boost_support(unsigned int cpu, int *support, + int *active, int * states) +{ return -1; } + +/* cpuid and cpuinfo helpers **************************/ + +static inline unsigned int cpuid_eax(unsigned int op) { return 0; }; +static inline unsigned int cpuid_ebx(unsigned int op) { return 0; }; +static inline unsigned int cpuid_ecx(unsigned int op) { return 0; }; +static inline unsigned int cpuid_edx(unsigned int op) { return 0; }; +#endif /* defined(__i386__) || defined(__x86_64__) */ + +#endif /* __CPUPOWERUTILS_HELPERS__ */ |