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#ifndef _ASM_X86_PERF_COUNTER_H
#define _ASM_X86_PERF_COUNTER_H
/*
* Performance counter hw details:
*/
#define X86_PMC_MAX_GENERIC 8
#define X86_PMC_MAX_FIXED 3
#define X86_PMC_IDX_GENERIC 0
#define X86_PMC_IDX_FIXED 32
#define X86_PMC_IDX_MAX 64
#define MSR_ARCH_PERFMON_PERFCTR0 0xc1
#define MSR_ARCH_PERFMON_PERFCTR1 0xc2
#define MSR_ARCH_PERFMON_EVENTSEL0 0x186
#define MSR_ARCH_PERFMON_EVENTSEL1 0x187
#define ARCH_PERFMON_EVENTSEL0_ENABLE (1 << 22)
#define ARCH_PERFMON_EVENTSEL_INT (1 << 20)
#define ARCH_PERFMON_EVENTSEL_OS (1 << 17)
#define ARCH_PERFMON_EVENTSEL_USR (1 << 16)
/*
* Includes eventsel and unit mask as well:
*/
#define ARCH_PERFMON_EVENT_MASK 0xffff
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL 0x3c
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK (0x00 << 8)
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX 0
#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
(1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))
#define ARCH_PERFMON_BRANCH_MISSES_RETIRED 6
/*
* Intel "Architectural Performance Monitoring" CPUID
* detection/enumeration details:
*/
union cpuid10_eax {
struct {
unsigned int version_id:8;
unsigned int num_counters:8;
unsigned int bit_width:8;
unsigned int mask_length:8;
} split;
unsigned int full;
};
union cpuid10_edx {
struct {
unsigned int num_counters_fixed:4;
unsigned int reserved:28;
} split;
unsigned int full;
};
/*
* Fixed-purpose performance counters:
*/
/*
* All 3 fixed-mode PMCs are configured via this single MSR:
*/
#define MSR_ARCH_PERFMON_FIXED_CTR_CTRL 0x38d
/*
* The counts are available in three separate MSRs:
*/
/* Instr_Retired.Any: */
#define MSR_ARCH_PERFMON_FIXED_CTR0 0x309
#define X86_PMC_IDX_FIXED_INSTRUCTIONS (X86_PMC_IDX_FIXED + 0)
/* CPU_CLK_Unhalted.Core: */
#define MSR_ARCH_PERFMON_FIXED_CTR1 0x30a
#define X86_PMC_IDX_FIXED_CPU_CYCLES (X86_PMC_IDX_FIXED + 1)
/* CPU_CLK_Unhalted.Ref: */
#define MSR_ARCH_PERFMON_FIXED_CTR2 0x30b
#define X86_PMC_IDX_FIXED_BUS_CYCLES (X86_PMC_IDX_FIXED + 2)
/*
* We model BTS tracing as another fixed-mode PMC.
*
* We choose a value in the middle of the fixed counter range, since lower
* values are used by actual fixed counters and higher values are used
* to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
*/
#define X86_PMC_IDX_FIXED_BTS (X86_PMC_IDX_FIXED + 16)
#ifdef CONFIG_PERF_COUNTERS
extern void init_hw_perf_counters(void);
extern void perf_counters_lapic_init(void);
#define PERF_COUNTER_INDEX_OFFSET 0
#else
static inline void init_hw_perf_counters(void) { }
static inline void perf_counters_lapic_init(void) { }
#endif
#endif /* _ASM_X86_PERF_COUNTER_H */
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