perf_event_intel.c 94.2 KB
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/*
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 * Per core/cpu state
 *
 * Used to coordinate shared registers between HT threads or
 * among events on a single PMU.
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 */
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/slab.h>
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#include <linux/export.h>
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#include <linux/watchdog.h>
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#include <asm/cpufeature.h>
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#include <asm/hardirq.h>
#include <asm/apic.h>

#include "perf_event.h"
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/*
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 * Intel PerfMon, used on Core and later.
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 */
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static u64 intel_perfmon_event_map[PERF_COUNT_HW_MAX] __read_mostly =
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{
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	[PERF_COUNT_HW_CPU_CYCLES]		= 0x003c,
	[PERF_COUNT_HW_INSTRUCTIONS]		= 0x00c0,
	[PERF_COUNT_HW_CACHE_REFERENCES]	= 0x4f2e,
	[PERF_COUNT_HW_CACHE_MISSES]		= 0x412e,
	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS]	= 0x00c4,
	[PERF_COUNT_HW_BRANCH_MISSES]		= 0x00c5,
	[PERF_COUNT_HW_BUS_CYCLES]		= 0x013c,
	[PERF_COUNT_HW_REF_CPU_CYCLES]		= 0x0300, /* pseudo-encoding */
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};

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static struct event_constraint intel_core_event_constraints[] __read_mostly =
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{
	INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
	INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
	INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
	INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
	INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
	INTEL_EVENT_CONSTRAINT(0xc1, 0x1), /* FP_COMP_INSTR_RET */
	EVENT_CONSTRAINT_END
};

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static struct event_constraint intel_core2_event_constraints[] __read_mostly =
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{
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	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
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	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
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	INTEL_EVENT_CONSTRAINT(0x10, 0x1), /* FP_COMP_OPS_EXE */
	INTEL_EVENT_CONSTRAINT(0x11, 0x2), /* FP_ASSIST */
	INTEL_EVENT_CONSTRAINT(0x12, 0x2), /* MUL */
	INTEL_EVENT_CONSTRAINT(0x13, 0x2), /* DIV */
	INTEL_EVENT_CONSTRAINT(0x14, 0x1), /* CYCLES_DIV_BUSY */
	INTEL_EVENT_CONSTRAINT(0x18, 0x1), /* IDLE_DURING_DIV */
	INTEL_EVENT_CONSTRAINT(0x19, 0x2), /* DELAYED_BYPASS */
	INTEL_EVENT_CONSTRAINT(0xa1, 0x1), /* RS_UOPS_DISPATCH_CYCLES */
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	INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */
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	INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
	EVENT_CONSTRAINT_END
};

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static struct event_constraint intel_nehalem_event_constraints[] __read_mostly =
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{
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	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
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	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
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	INTEL_EVENT_CONSTRAINT(0x40, 0x3), /* L1D_CACHE_LD */
	INTEL_EVENT_CONSTRAINT(0x41, 0x3), /* L1D_CACHE_ST */
	INTEL_EVENT_CONSTRAINT(0x42, 0x3), /* L1D_CACHE_LOCK */
	INTEL_EVENT_CONSTRAINT(0x43, 0x3), /* L1D_ALL_REF */
	INTEL_EVENT_CONSTRAINT(0x48, 0x3), /* L1D_PEND_MISS */
	INTEL_EVENT_CONSTRAINT(0x4e, 0x3), /* L1D_PREFETCH */
	INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
	INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
	EVENT_CONSTRAINT_END
};

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static struct extra_reg intel_nehalem_extra_regs[] __read_mostly =
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{
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	/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
	INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
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	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
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	EVENT_EXTRA_END
};

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static struct event_constraint intel_westmere_event_constraints[] __read_mostly =
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{
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	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
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	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
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	INTEL_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
	INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
	INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
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	INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
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	EVENT_CONSTRAINT_END
};

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static struct event_constraint intel_snb_event_constraints[] __read_mostly =
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{
	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
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	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
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	INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
	INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
	INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
	INTEL_UEVENT_CONSTRAINT(0x06a3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
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	INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */
	INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
	INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
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	INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
	INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
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	INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */

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	EVENT_CONSTRAINT_END
};

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static struct event_constraint intel_ivb_event_constraints[] __read_mostly =
{
	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
	INTEL_UEVENT_CONSTRAINT(0x0148, 0x4), /* L1D_PEND_MISS.PENDING */
	INTEL_UEVENT_CONSTRAINT(0x0279, 0xf), /* IDQ.EMTPY */
	INTEL_UEVENT_CONSTRAINT(0x019c, 0xf), /* IDQ_UOPS_NOT_DELIVERED.CORE */
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	INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_LDM_PENDING */
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	INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
	INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
	INTEL_UEVENT_CONSTRAINT(0x06a3, 0xf), /* CYCLE_ACTIVITY.STALLS_LDM_PENDING */
	INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
	INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
	INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
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	INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */

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	EVENT_CONSTRAINT_END
};

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static struct extra_reg intel_westmere_extra_regs[] __read_mostly =
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{
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	/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
	INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0xffff, RSP_0),
	INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0xffff, RSP_1),
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	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
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	EVENT_EXTRA_END
};

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static struct event_constraint intel_v1_event_constraints[] __read_mostly =
{
	EVENT_CONSTRAINT_END
};

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static struct event_constraint intel_gen_event_constraints[] __read_mostly =
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{
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	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
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	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
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	EVENT_CONSTRAINT_END
};

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static struct event_constraint intel_slm_event_constraints[] __read_mostly =
{
	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* pseudo CPU_CLK_UNHALTED.REF */
	EVENT_CONSTRAINT_END
};

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static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
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	/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
	INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3f807f8fffull, RSP_0),
	INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3f807f8fffull, RSP_1),
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	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
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	EVENT_EXTRA_END
};

static struct extra_reg intel_snbep_extra_regs[] __read_mostly = {
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	/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
	INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
	INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
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	INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
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	EVENT_EXTRA_END
};

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EVENT_ATTR_STR(mem-loads,	mem_ld_nhm,	"event=0x0b,umask=0x10,ldlat=3");
EVENT_ATTR_STR(mem-loads,	mem_ld_snb,	"event=0xcd,umask=0x1,ldlat=3");
EVENT_ATTR_STR(mem-stores,	mem_st_snb,	"event=0xcd,umask=0x2");
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struct attribute *nhm_events_attrs[] = {
	EVENT_PTR(mem_ld_nhm),
	NULL,
};

struct attribute *snb_events_attrs[] = {
	EVENT_PTR(mem_ld_snb),
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	EVENT_PTR(mem_st_snb),
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	NULL,
};

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static struct event_constraint intel_hsw_event_constraints[] = {
	FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
	FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
	INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.* */
	INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
	INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
	/* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
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	INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4),
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	/* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
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	INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4),
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	/* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
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	INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf),
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	INTEL_EXCLEVT_CONSTRAINT(0xd0, 0xf), /* MEM_UOPS_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd1, 0xf), /* MEM_LOAD_UOPS_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd2, 0xf), /* MEM_LOAD_UOPS_LLC_HIT_RETIRED.* */
	INTEL_EXCLEVT_CONSTRAINT(0xd3, 0xf), /* MEM_LOAD_UOPS_LLC_MISS_RETIRED.* */

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	EVENT_CONSTRAINT_END
};

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struct event_constraint intel_bdw_event_constraints[] = {
	FIXED_EVENT_CONSTRAINT(0x00c0, 0),	/* INST_RETIRED.ANY */
	FIXED_EVENT_CONSTRAINT(0x003c, 1),	/* CPU_CLK_UNHALTED.CORE */
	FIXED_EVENT_CONSTRAINT(0x0300, 2),	/* CPU_CLK_UNHALTED.REF */
	INTEL_UEVENT_CONSTRAINT(0x148, 0x4),	/* L1D_PEND_MISS.PENDING */
	INTEL_EVENT_CONSTRAINT(0xa3, 0x4),	/* CYCLE_ACTIVITY.* */
	EVENT_CONSTRAINT_END
};

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static u64 intel_pmu_event_map(int hw_event)
{
	return intel_perfmon_event_map[hw_event];
}

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#define SNB_DMND_DATA_RD	(1ULL << 0)
#define SNB_DMND_RFO		(1ULL << 1)
#define SNB_DMND_IFETCH		(1ULL << 2)
#define SNB_DMND_WB		(1ULL << 3)
#define SNB_PF_DATA_RD		(1ULL << 4)
#define SNB_PF_RFO		(1ULL << 5)
#define SNB_PF_IFETCH		(1ULL << 6)
#define SNB_LLC_DATA_RD		(1ULL << 7)
#define SNB_LLC_RFO		(1ULL << 8)
#define SNB_LLC_IFETCH		(1ULL << 9)
#define SNB_BUS_LOCKS		(1ULL << 10)
#define SNB_STRM_ST		(1ULL << 11)
#define SNB_OTHER		(1ULL << 15)
#define SNB_RESP_ANY		(1ULL << 16)
#define SNB_NO_SUPP		(1ULL << 17)
#define SNB_LLC_HITM		(1ULL << 18)
#define SNB_LLC_HITE		(1ULL << 19)
#define SNB_LLC_HITS		(1ULL << 20)
#define SNB_LLC_HITF		(1ULL << 21)
#define SNB_LOCAL		(1ULL << 22)
#define SNB_REMOTE		(0xffULL << 23)
#define SNB_SNP_NONE		(1ULL << 31)
#define SNB_SNP_NOT_NEEDED	(1ULL << 32)
#define SNB_SNP_MISS		(1ULL << 33)
#define SNB_NO_FWD		(1ULL << 34)
#define SNB_SNP_FWD		(1ULL << 35)
#define SNB_HITM		(1ULL << 36)
#define SNB_NON_DRAM		(1ULL << 37)

#define SNB_DMND_READ		(SNB_DMND_DATA_RD|SNB_LLC_DATA_RD)
#define SNB_DMND_WRITE		(SNB_DMND_RFO|SNB_LLC_RFO)
#define SNB_DMND_PREFETCH	(SNB_PF_DATA_RD|SNB_PF_RFO)

#define SNB_SNP_ANY		(SNB_SNP_NONE|SNB_SNP_NOT_NEEDED| \
				 SNB_SNP_MISS|SNB_NO_FWD|SNB_SNP_FWD| \
				 SNB_HITM)

#define SNB_DRAM_ANY		(SNB_LOCAL|SNB_REMOTE|SNB_SNP_ANY)
#define SNB_DRAM_REMOTE		(SNB_REMOTE|SNB_SNP_ANY)

#define SNB_L3_ACCESS		SNB_RESP_ANY
#define SNB_L3_MISS		(SNB_DRAM_ANY|SNB_NON_DRAM)

static __initconst const u64 snb_hw_cache_extra_regs
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_L3_ACCESS,
		[ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_L3_MISS,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_L3_ACCESS,
		[ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_L3_MISS,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_L3_ACCESS,
		[ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_L3_MISS,
	},
 },
 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = SNB_DMND_READ|SNB_DRAM_ANY,
		[ C(RESULT_MISS)   ] = SNB_DMND_READ|SNB_DRAM_REMOTE,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = SNB_DMND_WRITE|SNB_DRAM_ANY,
		[ C(RESULT_MISS)   ] = SNB_DMND_WRITE|SNB_DRAM_REMOTE,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = SNB_DMND_PREFETCH|SNB_DRAM_ANY,
		[ C(RESULT_MISS)   ] = SNB_DMND_PREFETCH|SNB_DRAM_REMOTE,
	},
 },
};

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static __initconst const u64 snb_hw_cache_event_ids
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0xf1d0, /* MEM_UOP_RETIRED.LOADS        */
		[ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPLACEMENT              */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0xf2d0, /* MEM_UOP_RETIRED.STORES       */
		[ C(RESULT_MISS)   ] = 0x0851, /* L1D.ALL_M_REPLACEMENT        */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x024e, /* HW_PRE_REQ.DL1_MISS          */
	},
 },
 [ C(L1I ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0280, /* ICACHE.MISSES */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
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		/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
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		[ C(RESULT_ACCESS) ] = 0x01b7,
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		/* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
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	},
	[ C(OP_WRITE) ] = {
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		/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
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		[ C(RESULT_ACCESS) ] = 0x01b7,
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		/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
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	},
	[ C(OP_PREFETCH) ] = {
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		/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
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		[ C(RESULT_ACCESS) ] = 0x01b7,
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		/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
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	},
 },
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x81d0, /* MEM_UOP_RETIRED.ALL_LOADS */
		[ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.CAUSES_A_WALK */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x82d0, /* MEM_UOP_RETIRED.ALL_STORES */
		[ C(RESULT_MISS)   ] = 0x0149, /* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x1085, /* ITLB_MISSES.STLB_HIT         */
		[ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.CAUSES_A_WALK    */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(BPU ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
		[ C(RESULT_MISS)   ] = 0x00c5, /* BR_MISP_RETIRED.ALL_BRANCHES */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
420 421
 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
422 423
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
424 425
	},
	[ C(OP_WRITE) ] = {
426 427
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
428 429
	},
	[ C(OP_PREFETCH) ] = {
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		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
432 433 434
	},
 },

435 436
};

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/*
 * Notes on the events:
 * - data reads do not include code reads (comparable to earlier tables)
 * - data counts include speculative execution (except L1 write, dtlb, bpu)
 * - remote node access includes remote memory, remote cache, remote mmio.
 * - prefetches are not included in the counts because they are not
 *   reliably counted.
 */

#define HSW_DEMAND_DATA_RD		BIT_ULL(0)
#define HSW_DEMAND_RFO			BIT_ULL(1)
#define HSW_ANY_RESPONSE		BIT_ULL(16)
#define HSW_SUPPLIER_NONE		BIT_ULL(17)
#define HSW_L3_MISS_LOCAL_DRAM		BIT_ULL(22)
#define HSW_L3_MISS_REMOTE_HOP0		BIT_ULL(27)
#define HSW_L3_MISS_REMOTE_HOP1		BIT_ULL(28)
#define HSW_L3_MISS_REMOTE_HOP2P	BIT_ULL(29)
#define HSW_L3_MISS			(HSW_L3_MISS_LOCAL_DRAM| \
					 HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
					 HSW_L3_MISS_REMOTE_HOP2P)
#define HSW_SNOOP_NONE			BIT_ULL(31)
#define HSW_SNOOP_NOT_NEEDED		BIT_ULL(32)
#define HSW_SNOOP_MISS			BIT_ULL(33)
#define HSW_SNOOP_HIT_NO_FWD		BIT_ULL(34)
#define HSW_SNOOP_HIT_WITH_FWD		BIT_ULL(35)
#define HSW_SNOOP_HITM			BIT_ULL(36)
#define HSW_SNOOP_NON_DRAM		BIT_ULL(37)
#define HSW_ANY_SNOOP			(HSW_SNOOP_NONE| \
					 HSW_SNOOP_NOT_NEEDED|HSW_SNOOP_MISS| \
					 HSW_SNOOP_HIT_NO_FWD|HSW_SNOOP_HIT_WITH_FWD| \
					 HSW_SNOOP_HITM|HSW_SNOOP_NON_DRAM)
#define HSW_SNOOP_DRAM			(HSW_ANY_SNOOP & ~HSW_SNOOP_NON_DRAM)
#define HSW_DEMAND_READ			HSW_DEMAND_DATA_RD
#define HSW_DEMAND_WRITE		HSW_DEMAND_RFO
#define HSW_L3_MISS_REMOTE		(HSW_L3_MISS_REMOTE_HOP0|\
					 HSW_L3_MISS_REMOTE_HOP1|HSW_L3_MISS_REMOTE_HOP2P)
#define HSW_LLC_ACCESS			HSW_ANY_RESPONSE

475 476 477 478 479 480
#define BDW_L3_MISS_LOCAL		BIT(26)
#define BDW_L3_MISS			(BDW_L3_MISS_LOCAL| \
					 HSW_L3_MISS_REMOTE_HOP0|HSW_L3_MISS_REMOTE_HOP1| \
					 HSW_L3_MISS_REMOTE_HOP2P)


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static __initconst const u64 hsw_hw_cache_event_ids
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x81d0,	/* MEM_UOPS_RETIRED.ALL_LOADS */
		[ C(RESULT_MISS)   ] = 0x151,	/* L1D.REPLACEMENT */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x82d0,	/* MEM_UOPS_RETIRED.ALL_STORES */
		[ C(RESULT_MISS)   ] = 0x0,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(L1I ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x280,	/* ICACHE.MISSES */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x1b7,	/* OFFCORE_RESPONSE */
		[ C(RESULT_MISS)   ] = 0x1b7,	/* OFFCORE_RESPONSE */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x1b7,	/* OFFCORE_RESPONSE */
		[ C(RESULT_MISS)   ] = 0x1b7,	/* OFFCORE_RESPONSE */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x81d0,	/* MEM_UOPS_RETIRED.ALL_LOADS */
		[ C(RESULT_MISS)   ] = 0x108,	/* DTLB_LOAD_MISSES.MISS_CAUSES_A_WALK */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x82d0,	/* MEM_UOPS_RETIRED.ALL_STORES */
		[ C(RESULT_MISS)   ] = 0x149,	/* DTLB_STORE_MISSES.MISS_CAUSES_A_WALK */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x6085,	/* ITLB_MISSES.STLB_HIT */
		[ C(RESULT_MISS)   ] = 0x185,	/* ITLB_MISSES.MISS_CAUSES_A_WALK */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(BPU ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0xc4,	/* BR_INST_RETIRED.ALL_BRANCHES */
		[ C(RESULT_MISS)   ] = 0xc5,	/* BR_MISP_RETIRED.ALL_BRANCHES */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x1b7,	/* OFFCORE_RESPONSE */
		[ C(RESULT_MISS)   ] = 0x1b7,	/* OFFCORE_RESPONSE */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x1b7,	/* OFFCORE_RESPONSE */
		[ C(RESULT_MISS)   ] = 0x1b7,	/* OFFCORE_RESPONSE */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
};

static __initconst const u64 hsw_hw_cache_extra_regs
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
				       HSW_LLC_ACCESS,
		[ C(RESULT_MISS)   ] = HSW_DEMAND_READ|
				       HSW_L3_MISS|HSW_ANY_SNOOP,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
				       HSW_LLC_ACCESS,
		[ C(RESULT_MISS)   ] = HSW_DEMAND_WRITE|
				       HSW_L3_MISS|HSW_ANY_SNOOP,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = HSW_DEMAND_READ|
				       HSW_L3_MISS_LOCAL_DRAM|
				       HSW_SNOOP_DRAM,
		[ C(RESULT_MISS)   ] = HSW_DEMAND_READ|
				       HSW_L3_MISS_REMOTE|
				       HSW_SNOOP_DRAM,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = HSW_DEMAND_WRITE|
				       HSW_L3_MISS_LOCAL_DRAM|
				       HSW_SNOOP_DRAM,
		[ C(RESULT_MISS)   ] = HSW_DEMAND_WRITE|
				       HSW_L3_MISS_REMOTE|
				       HSW_SNOOP_DRAM,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
};

633
static __initconst const u64 westmere_hw_cache_event_ids
634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
		[ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
		[ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
		[ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
	},
 },
 [ C(L1I ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
		[ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
668
		/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
669
		[ C(RESULT_ACCESS) ] = 0x01b7,
670 671
		/* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
672
	},
673 674 675 676
	/*
	 * Use RFO, not WRITEBACK, because a write miss would typically occur
	 * on RFO.
	 */
677
	[ C(OP_WRITE) ] = {
678 679 680
		/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
		[ C(RESULT_ACCESS) ] = 0x01b7,
		/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
681
		[ C(RESULT_MISS)   ] = 0x01b7,
682 683
	},
	[ C(OP_PREFETCH) ] = {
684
		/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
685
		[ C(RESULT_ACCESS) ] = 0x01b7,
686 687
		/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
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	},
 },
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
		[ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
		[ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
		[ C(RESULT_MISS)   ] = 0x0185, /* ITLB_MISSES.ANY              */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(BPU ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
		[ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
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 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
 },
746 747
};

748
/*
749 750
 * Nehalem/Westmere MSR_OFFCORE_RESPONSE bits;
 * See IA32 SDM Vol 3B 30.6.1.3
751 752
 */

753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769
#define NHM_DMND_DATA_RD	(1 << 0)
#define NHM_DMND_RFO		(1 << 1)
#define NHM_DMND_IFETCH		(1 << 2)
#define NHM_DMND_WB		(1 << 3)
#define NHM_PF_DATA_RD		(1 << 4)
#define NHM_PF_DATA_RFO		(1 << 5)
#define NHM_PF_IFETCH		(1 << 6)
#define NHM_OFFCORE_OTHER	(1 << 7)
#define NHM_UNCORE_HIT		(1 << 8)
#define NHM_OTHER_CORE_HIT_SNP	(1 << 9)
#define NHM_OTHER_CORE_HITM	(1 << 10)
        			/* reserved */
#define NHM_REMOTE_CACHE_FWD	(1 << 12)
#define NHM_REMOTE_DRAM		(1 << 13)
#define NHM_LOCAL_DRAM		(1 << 14)
#define NHM_NON_DRAM		(1 << 15)

770 771
#define NHM_LOCAL		(NHM_LOCAL_DRAM|NHM_REMOTE_CACHE_FWD)
#define NHM_REMOTE		(NHM_REMOTE_DRAM)
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#define NHM_DMND_READ		(NHM_DMND_DATA_RD)
#define NHM_DMND_WRITE		(NHM_DMND_RFO|NHM_DMND_WB)
#define NHM_DMND_PREFETCH	(NHM_PF_DATA_RD|NHM_PF_DATA_RFO)

#define NHM_L3_HIT	(NHM_UNCORE_HIT|NHM_OTHER_CORE_HIT_SNP|NHM_OTHER_CORE_HITM)
778
#define NHM_L3_MISS	(NHM_NON_DRAM|NHM_LOCAL_DRAM|NHM_REMOTE_DRAM|NHM_REMOTE_CACHE_FWD)
779
#define NHM_L3_ACCESS	(NHM_L3_HIT|NHM_L3_MISS)
780 781 782 783 784 785 786 787

static __initconst const u64 nehalem_hw_cache_extra_regs
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
788 789
		[ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_L3_ACCESS,
		[ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_L3_MISS,
790 791
	},
	[ C(OP_WRITE) ] = {
792 793
		[ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_L3_ACCESS,
		[ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_L3_MISS,
794 795
	},
	[ C(OP_PREFETCH) ] = {
796 797
		[ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_L3_ACCESS,
		[ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_L3_MISS,
798
	},
799 800 801
 },
 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
802 803
		[ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_LOCAL|NHM_REMOTE,
		[ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_REMOTE,
804 805
	},
	[ C(OP_WRITE) ] = {
806 807
		[ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_LOCAL|NHM_REMOTE,
		[ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_REMOTE,
808 809
	},
	[ C(OP_PREFETCH) ] = {
810 811
		[ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_LOCAL|NHM_REMOTE,
		[ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_REMOTE,
812 813
	},
 },
814 815
};

816
static __initconst const u64 nehalem_hw_cache_event_ids
817 818 819 820 821 822
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D) ] = {
	[ C(OP_READ) ] = {
823 824
		[ C(RESULT_ACCESS) ] = 0x010b, /* MEM_INST_RETIRED.LOADS       */
		[ C(RESULT_MISS)   ] = 0x0151, /* L1D.REPL                     */
825 826
	},
	[ C(OP_WRITE) ] = {
827 828
		[ C(RESULT_ACCESS) ] = 0x020b, /* MEM_INST_RETURED.STORES      */
		[ C(RESULT_MISS)   ] = 0x0251, /* L1D.M_REPL                   */
829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x014e, /* L1D_PREFETCH.REQUESTS        */
		[ C(RESULT_MISS)   ] = 0x024e, /* L1D_PREFETCH.MISS            */
	},
 },
 [ C(L1I ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                    */
		[ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                   */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
851 852 853 854
		/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
		[ C(RESULT_ACCESS) ] = 0x01b7,
		/* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
855
	},
856 857 858 859
	/*
	 * Use RFO, not WRITEBACK, because a write miss would typically occur
	 * on RFO.
	 */
860
	[ C(OP_WRITE) ] = {
861 862 863 864
		/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
		[ C(RESULT_ACCESS) ] = 0x01b7,
		/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
865 866
	},
	[ C(OP_PREFETCH) ] = {
867 868 869 870
		/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
		[ C(RESULT_ACCESS) ] = 0x01b7,
		/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914
	},
 },
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI   (alias)  */
		[ C(RESULT_MISS)   ] = 0x0108, /* DTLB_LOAD_MISSES.ANY         */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI   (alias)  */
		[ C(RESULT_MISS)   ] = 0x010c, /* MEM_STORE_RETIRED.DTLB_MISS  */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0x0,
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x01c0, /* INST_RETIRED.ANY_P           */
		[ C(RESULT_MISS)   ] = 0x20c8, /* ITLB_MISS_RETIRED            */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(BPU ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ALL_BRANCHES */
		[ C(RESULT_MISS)   ] = 0x03e8, /* BPU_CLEARS.ANY               */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
915 916 917 918 919 920 921 922 923 924 925 926 927 928
 [ C(NODE) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x01b7,
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
 },
929 930
};

931
static __initconst const u64 core2_hw_cache_event_ids
932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI          */
		[ C(RESULT_MISS)   ] = 0x0140, /* L1D_CACHE_LD.I_STATE       */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI          */
		[ C(RESULT_MISS)   ] = 0x0141, /* L1D_CACHE_ST.I_STATE       */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x104e, /* L1D_PREFETCH.REQUESTS      */
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(L1I ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0080, /* L1I.READS                  */
		[ C(RESULT_MISS)   ] = 0x0081, /* L1I.MISSES                 */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
		[ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
		[ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0f40, /* L1D_CACHE_LD.MESI  (alias) */
		[ C(RESULT_MISS)   ] = 0x0208, /* DTLB_MISSES.MISS_LD        */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x0f41, /* L1D_CACHE_ST.MESI  (alias) */
		[ C(RESULT_MISS)   ] = 0x0808, /* DTLB_MISSES.MISS_ST        */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
		[ C(RESULT_MISS)   ] = 0x1282, /* ITLBMISSES                 */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(BPU ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
		[ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
};

1022
static __initconst const u64 atom_hw_cache_event_ids
1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE.LD               */
		[ C(RESULT_MISS)   ] = 0,
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE.ST               */
		[ C(RESULT_MISS)   ] = 0,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0x0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(L1I ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0380, /* L1I.READS                  */
		[ C(RESULT_MISS)   ] = 0x0280, /* L1I.MISSES                 */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x4f29, /* L2_LD.MESI                 */
		[ C(RESULT_MISS)   ] = 0x4129, /* L2_LD.ISTATE               */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x4f2A, /* L2_ST.MESI                 */
		[ C(RESULT_MISS)   ] = 0x412A, /* L2_ST.ISTATE               */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x2140, /* L1D_CACHE_LD.MESI  (alias) */
		[ C(RESULT_MISS)   ] = 0x0508, /* DTLB_MISSES.MISS_LD        */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0x2240, /* L1D_CACHE_ST.MESI  (alias) */
		[ C(RESULT_MISS)   ] = 0x0608, /* DTLB_MISSES.MISS_ST        */
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P         */
		[ C(RESULT_MISS)   ] = 0x0282, /* ITLB.MISSES                */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(BPU ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY        */
		[ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED    */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
};

1113 1114 1115
static struct extra_reg intel_slm_extra_regs[] __read_mostly =
{
	/* must define OFFCORE_RSP_X first, see intel_fixup_er() */
1116 1117
	INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x768005ffffull, RSP_0),
	INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x768005ffffull, RSP_1),
1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136
	EVENT_EXTRA_END
};

#define SLM_DMND_READ		SNB_DMND_DATA_RD
#define SLM_DMND_WRITE		SNB_DMND_RFO
#define SLM_DMND_PREFETCH	(SNB_PF_DATA_RD|SNB_PF_RFO)

#define SLM_SNP_ANY		(SNB_SNP_NONE|SNB_SNP_MISS|SNB_NO_FWD|SNB_HITM)
#define SLM_LLC_ACCESS		SNB_RESP_ANY
#define SLM_LLC_MISS		(SLM_SNP_ANY|SNB_NON_DRAM)

static __initconst const u64 slm_hw_cache_extra_regs
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = SLM_DMND_READ|SLM_LLC_ACCESS,
1137
		[ C(RESULT_MISS)   ] = 0,
1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = SLM_DMND_WRITE|SLM_LLC_ACCESS,
		[ C(RESULT_MISS)   ] = SLM_DMND_WRITE|SLM_LLC_MISS,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = SLM_DMND_PREFETCH|SLM_LLC_ACCESS,
		[ C(RESULT_MISS)   ] = SLM_DMND_PREFETCH|SLM_LLC_MISS,
	},
 },
};

static __initconst const u64 slm_hw_cache_event_ids
				[PERF_COUNT_HW_CACHE_MAX]
				[PERF_COUNT_HW_CACHE_OP_MAX]
				[PERF_COUNT_HW_CACHE_RESULT_MAX] =
{
 [ C(L1D) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0x0104, /* LD_DCU_MISS */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(L1I ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x0380, /* ICACHE.ACCESSES */
		[ C(RESULT_MISS)   ] = 0x0280, /* ICACGE.MISSES */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(LL  ) ] = {
	[ C(OP_READ) ] = {
		/* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
		[ C(RESULT_ACCESS) ] = 0x01b7,
1187
		[ C(RESULT_MISS)   ] = 0,
1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218
	},
	[ C(OP_WRITE) ] = {
		/* OFFCORE_RESPONSE.ANY_RFO.LOCAL_CACHE */
		[ C(RESULT_ACCESS) ] = 0x01b7,
		/* OFFCORE_RESPONSE.ANY_RFO.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
	[ C(OP_PREFETCH) ] = {
		/* OFFCORE_RESPONSE.PREFETCH.LOCAL_CACHE */
		[ C(RESULT_ACCESS) ] = 0x01b7,
		/* OFFCORE_RESPONSE.PREFETCH.ANY_LLC_MISS */
		[ C(RESULT_MISS)   ] = 0x01b7,
	},
 },
 [ C(DTLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0x0804, /* LD_DTLB_MISS */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = 0,
		[ C(RESULT_MISS)   ] = 0,
	},
 },
 [ C(ITLB) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c0, /* INST_RETIRED.ANY_P */
1219
		[ C(RESULT_MISS)   ] = 0x40205, /* PAGE_WALKS.I_SIDE_WALKS */
1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
 [ C(BPU ) ] = {
	[ C(OP_READ) ] = {
		[ C(RESULT_ACCESS) ] = 0x00c4, /* BR_INST_RETIRED.ANY */
		[ C(RESULT_MISS)   ] = 0x00c5, /* BP_INST_RETIRED.MISPRED */
	},
	[ C(OP_WRITE) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
	[ C(OP_PREFETCH) ] = {
		[ C(RESULT_ACCESS) ] = -1,
		[ C(RESULT_MISS)   ] = -1,
	},
 },
};

1246 1247 1248 1249
/*
 * Use from PMIs where the LBRs are already disabled.
 */
static void __intel_pmu_disable_all(void)
1250
{
1251
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1252 1253 1254

	wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);

1255
	if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask))
1256
		intel_pmu_disable_bts();
1257 1258
	else
		intel_bts_disable_local();
1259 1260

	intel_pmu_pebs_disable_all();
1261 1262 1263 1264 1265
}

static void intel_pmu_disable_all(void)
{
	__intel_pmu_disable_all();
1266
	intel_pmu_lbr_disable_all();
1267 1268
}

1269
static void __intel_pmu_enable_all(int added, bool pmi)
1270
{
1271
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1272

1273
	intel_pmu_pebs_enable_all();
1274
	intel_pmu_lbr_enable_all(pmi);
1275 1276
	wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL,
			x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask);
1277

1278
	if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
1279
		struct perf_event *event =
1280
			cpuc->events[INTEL_PMC_IDX_FIXED_BTS];
1281 1282 1283 1284 1285

		if (WARN_ON_ONCE(!event))
			return;

		intel_pmu_enable_bts(event->hw.config);
1286 1287
	} else
		intel_bts_enable_local();
1288 1289
}

1290 1291 1292 1293 1294
static void intel_pmu_enable_all(int added)
{
	__intel_pmu_enable_all(added, false);
}

1295 1296 1297 1298
/*
 * Workaround for:
 *   Intel Errata AAK100 (model 26)
 *   Intel Errata AAP53  (model 30)
1299
 *   Intel Errata BD53   (model 44)
1300
 *
1301 1302 1303 1304 1305 1306 1307
 * The official story:
 *   These chips need to be 'reset' when adding counters by programming the
 *   magic three (non-counting) events 0x4300B5, 0x4300D2, and 0x4300B1 either
 *   in sequence on the same PMC or on different PMCs.
 *
 * In practise it appears some of these events do in fact count, and
 * we need to programm all 4 events.
1308
 */
1309
static void intel_pmu_nhm_workaround(void)
1310
{
1311
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1312 1313 1314 1315 1316 1317 1318 1319
	static const unsigned long nhm_magic[4] = {
		0x4300B5,
		0x4300D2,
		0x4300B1,
		0x4300B1
	};
	struct perf_event *event;
	int i;
1320

1321 1322 1323 1324 1325 1326 1327 1328 1329
	/*
	 * The Errata requires below steps:
	 * 1) Clear MSR_IA32_PEBS_ENABLE and MSR_CORE_PERF_GLOBAL_CTRL;
	 * 2) Configure 4 PERFEVTSELx with the magic events and clear
	 *    the corresponding PMCx;
	 * 3) set bit0~bit3 of MSR_CORE_PERF_GLOBAL_CTRL;
	 * 4) Clear MSR_CORE_PERF_GLOBAL_CTRL;
	 * 5) Clear 4 pairs of ERFEVTSELx and PMCx;
	 */
1330

1331 1332 1333 1334 1335 1336 1337 1338 1339 1340
	/*
	 * The real steps we choose are a little different from above.
	 * A) To reduce MSR operations, we don't run step 1) as they
	 *    are already cleared before this function is called;
	 * B) Call x86_perf_event_update to save PMCx before configuring
	 *    PERFEVTSELx with magic number;
	 * C) With step 5), we do clear only when the PERFEVTSELx is
	 *    not used currently.
	 * D) Call x86_perf_event_set_period to restore PMCx;
	 */
1341

1342 1343 1344 1345 1346 1347
	/* We always operate 4 pairs of PERF Counters */
	for (i = 0; i < 4; i++) {
		event = cpuc->events[i];
		if (event)
			x86_perf_event_update(event);
	}
1348

1349 1350 1351 1352 1353 1354 1355
	for (i = 0; i < 4; i++) {
		wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, nhm_magic[i]);
		wrmsrl(MSR_ARCH_PERFMON_PERFCTR0 + i, 0x0);
	}

	wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0xf);
	wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0x0);
1356

1357 1358 1359 1360 1361
	for (i = 0; i < 4; i++) {
		event = cpuc->events[i];

		if (event) {
			x86_perf_event_set_period(event);
1362
			__x86_pmu_enable_event(&event->hw,
1363 1364 1365
					ARCH_PERFMON_EVENTSEL_ENABLE);
		} else
			wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, 0x0);
1366
	}
1367 1368 1369 1370 1371 1372
}

static void intel_pmu_nhm_enable_all(int added)
{
	if (added)
		intel_pmu_nhm_workaround();
1373 1374 1375
	intel_pmu_enable_all(added);
}

1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389
static inline u64 intel_pmu_get_status(void)
{
	u64 status;

	rdmsrl(MSR_CORE_PERF_GLOBAL_STATUS, status);

	return status;
}

static inline void intel_pmu_ack_status(u64 ack)
{
	wrmsrl(MSR_CORE_PERF_GLOBAL_OVF_CTRL, ack);
}

1390
static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
1391
{
1392
	int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1393 1394 1395 1396 1397 1398
	u64 ctrl_val, mask;

	mask = 0xfULL << (idx * 4);

	rdmsrl(hwc->config_base, ctrl_val);
	ctrl_val &= ~mask;
1399
	wrmsrl(hwc->config_base, ctrl_val);
1400 1401
}

1402 1403 1404 1405 1406
static inline bool event_is_checkpointed(struct perf_event *event)
{
	return (event->hw.config & HSW_IN_TX_CHECKPOINTED) != 0;
}

1407
static void intel_pmu_disable_event(struct perf_event *event)
1408
{
1409
	struct hw_perf_event *hwc = &event->hw;
1410
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1411

1412
	if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
1413 1414 1415 1416 1417
		intel_pmu_disable_bts();
		intel_pmu_drain_bts_buffer();
		return;
	}

1418 1419
	cpuc->intel_ctrl_guest_mask &= ~(1ull << hwc->idx);
	cpuc->intel_ctrl_host_mask &= ~(1ull << hwc->idx);
1420
	cpuc->intel_cp_status &= ~(1ull << hwc->idx);
1421

1422 1423 1424 1425
	/*
	 * must disable before any actual event
	 * because any event may be combined with LBR
	 */
1426
	if (needs_branch_stack(event))
1427 1428
		intel_pmu_lbr_disable(event);

1429
	if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1430
		intel_pmu_disable_fixed(hwc);
1431 1432 1433
		return;
	}

1434
	x86_pmu_disable_event(event);
1435

P
Peter Zijlstra 已提交
1436
	if (unlikely(event->attr.precise_ip))
1437
		intel_pmu_pebs_disable(event);
1438 1439
}

1440
static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
1441
{
1442
	int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467
	u64 ctrl_val, bits, mask;

	/*
	 * Enable IRQ generation (0x8),
	 * and enable ring-3 counting (0x2) and ring-0 counting (0x1)
	 * if requested:
	 */
	bits = 0x8ULL;
	if (hwc->config & ARCH_PERFMON_EVENTSEL_USR)
		bits |= 0x2;
	if (hwc->config & ARCH_PERFMON_EVENTSEL_OS)
		bits |= 0x1;

	/*
	 * ANY bit is supported in v3 and up
	 */
	if (x86_pmu.version > 2 && hwc->config & ARCH_PERFMON_EVENTSEL_ANY)
		bits |= 0x4;

	bits <<= (idx * 4);
	mask = 0xfULL << (idx * 4);

	rdmsrl(hwc->config_base, ctrl_val);
	ctrl_val &= ~mask;
	ctrl_val |= bits;
1468
	wrmsrl(hwc->config_base, ctrl_val);
1469 1470
}

1471
static void intel_pmu_enable_event(struct perf_event *event)
1472
{
1473
	struct hw_perf_event *hwc = &event->hw;
1474
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
1475

1476
	if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
T
Tejun Heo 已提交
1477
		if (!__this_cpu_read(cpu_hw_events.enabled))
1478 1479 1480 1481 1482
			return;

		intel_pmu_enable_bts(hwc->config);
		return;
	}
1483 1484 1485 1486
	/*
	 * must enabled before any actual event
	 * because any event may be combined with LBR
	 */
1487
	if (needs_branch_stack(event))
1488
		intel_pmu_lbr_enable(event);
1489

1490 1491 1492 1493 1494
	if (event->attr.exclude_host)
		cpuc->intel_ctrl_guest_mask |= (1ull << hwc->idx);
	if (event->attr.exclude_guest)
		cpuc->intel_ctrl_host_mask |= (1ull << hwc->idx);

1495 1496 1497
	if (unlikely(event_is_checkpointed(event)))
		cpuc->intel_cp_status |= (1ull << hwc->idx);

1498
	if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
1499
		intel_pmu_enable_fixed(hwc);
1500 1501 1502
		return;
	}

P
Peter Zijlstra 已提交
1503
	if (unlikely(event->attr.precise_ip))
1504
		intel_pmu_pebs_enable(event);
1505

1506
	__x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
1507 1508 1509 1510 1511 1512
}

/*
 * Save and restart an expired event. Called by NMI contexts,
 * so it has to be careful about preempting normal event ops:
 */
1513
int intel_pmu_save_and_restart(struct perf_event *event)
1514
{
1515
	x86_perf_event_update(event);
1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526
	/*
	 * For a checkpointed counter always reset back to 0.  This
	 * avoids a situation where the counter overflows, aborts the
	 * transaction and is then set back to shortly before the
	 * overflow, and overflows and aborts again.
	 */
	if (unlikely(event_is_checkpointed(event))) {
		/* No race with NMIs because the counter should not be armed */
		wrmsrl(event->hw.event_base, 0);
		local64_set(&event->hw.prev_count, 0);
	}
1527
	return x86_perf_event_set_period(event);
1528 1529 1530 1531
}

static void intel_pmu_reset(void)
{
T
Tejun Heo 已提交
1532
	struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
1533 1534 1535
	unsigned long flags;
	int idx;

1536
	if (!x86_pmu.num_counters)
1537 1538 1539 1540
		return;

	local_irq_save(flags);

1541
	pr_info("clearing PMU state on CPU#%d\n", smp_processor_id());
1542

1543
	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
1544 1545
		wrmsrl_safe(x86_pmu_config_addr(idx), 0ull);
		wrmsrl_safe(x86_pmu_event_addr(idx),  0ull);
1546
	}
1547
	for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
1548
		wrmsrl_safe(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);
1549

1550 1551 1552
	if (ds)
		ds->bts_index = ds->bts_buffer_base;

1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564
	/* Ack all overflows and disable fixed counters */
	if (x86_pmu.version >= 2) {
		intel_pmu_ack_status(intel_pmu_get_status());
		wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);
	}

	/* Reset LBRs and LBR freezing */
	if (x86_pmu.lbr_nr) {
		update_debugctlmsr(get_debugctlmsr() &
			~(DEBUGCTLMSR_FREEZE_LBRS_ON_PMI|DEBUGCTLMSR_LBR));
	}

1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576
	local_irq_restore(flags);
}

/*
 * This handler is triggered by the local APIC, so the APIC IRQ handling
 * rules apply:
 */
static int intel_pmu_handle_irq(struct pt_regs *regs)
{
	struct perf_sample_data data;
	struct cpu_hw_events *cpuc;
	int bit, loops;
1577
	u64 status;
1578
	int handled;
1579

1580
	cpuc = this_cpu_ptr(&cpu_hw_events);
1581

1582
	/*
1583 1584
	 * No known reason to not always do late ACK,
	 * but just in case do it opt-in.
1585
	 */
1586 1587
	if (!x86_pmu.late_ack)
		apic_write(APIC_LVTPC, APIC_DM_NMI);
1588
	__intel_pmu_disable_all();
1589
	handled = intel_pmu_drain_bts_buffer();
1590
	handled += intel_bts_interrupt();
1591
	status = intel_pmu_get_status();
1592 1593
	if (!status)
		goto done;
1594 1595 1596

	loops = 0;
again:
1597
	intel_pmu_ack_status(status);
1598
	if (++loops > 100) {
1599 1600 1601 1602 1603 1604
		static bool warned = false;
		if (!warned) {
			WARN(1, "perfevents: irq loop stuck!\n");
			perf_event_print_debug();
			warned = true;
		}
1605
		intel_pmu_reset();
1606
		goto done;
1607 1608 1609
	}

	inc_irq_stat(apic_perf_irqs);
1610

1611 1612
	intel_pmu_lbr_read();

1613 1614 1615 1616 1617 1618 1619 1620 1621
	/*
	 * CondChgd bit 63 doesn't mean any overflow status. Ignore
	 * and clear the bit.
	 */
	if (__test_and_clear_bit(63, (unsigned long *)&status)) {
		if (!status)
			goto done;
	}

1622 1623 1624
	/*
	 * PEBS overflow sets bit 62 in the global status register
	 */
1625 1626
	if (__test_and_clear_bit(62, (unsigned long *)&status)) {
		handled++;
1627
		x86_pmu.drain_pebs(regs);
1628
	}
1629

1630 1631 1632 1633 1634 1635 1636 1637
	/*
	 * Intel PT
	 */
	if (__test_and_clear_bit(55, (unsigned long *)&status)) {
		handled++;
		intel_pt_interrupt();
	}

1638
	/*
1639 1640 1641
	 * Checkpointed counters can lead to 'spurious' PMIs because the
	 * rollback caused by the PMI will have cleared the overflow status
	 * bit. Therefore always force probe these counters.
1642
	 */
1643
	status |= cpuc->intel_cp_status;
1644

1645
	for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
1646 1647
		struct perf_event *event = cpuc->events[bit];

1648 1649
		handled++;

1650 1651 1652 1653 1654 1655
		if (!test_bit(bit, cpuc->active_mask))
			continue;

		if (!intel_pmu_save_and_restart(event))
			continue;

1656
		perf_sample_data_init(&data, 0, event->hw.last_period);
1657

1658 1659 1660
		if (has_branch_stack(event))
			data.br_stack = &cpuc->lbr_stack;

1661
		if (perf_event_overflow(event, &data, regs))
P
Peter Zijlstra 已提交
1662
			x86_pmu_stop(event, 0);
1663 1664 1665 1666 1667 1668 1669 1670 1671
	}

	/*
	 * Repeat if there is more work to be done:
	 */
	status = intel_pmu_get_status();
	if (status)
		goto again;

1672
done:
1673
	__intel_pmu_enable_all(0, true);
1674 1675 1676 1677 1678 1679 1680
	/*
	 * Only unmask the NMI after the overflow counters
	 * have been reset. This avoids spurious NMIs on
	 * Haswell CPUs.
	 */
	if (x86_pmu.late_ack)
		apic_write(APIC_LVTPC, APIC_DM_NMI);
1681
	return handled;
1682 1683 1684
}

static struct event_constraint *
1685
intel_bts_constraints(struct perf_event *event)
1686
{
1687 1688
	struct hw_perf_event *hwc = &event->hw;
	unsigned int hw_event, bts_event;
1689

P
Peter Zijlstra 已提交
1690 1691 1692
	if (event->attr.freq)
		return NULL;

1693 1694
	hw_event = hwc->config & INTEL_ARCH_EVENT_MASK;
	bts_event = x86_pmu.event_map(PERF_COUNT_HW_BRANCH_INSTRUCTIONS);
1695

1696
	if (unlikely(hw_event == bts_event && hwc->sample_period == 1))
1697
		return &bts_constraint;
1698

1699 1700 1701
	return NULL;
}

1702
static int intel_alt_er(int idx)
1703
{
1704
	if (!(x86_pmu.flags & PMU_FL_HAS_RSP_1))
1705
		return idx;
1706

1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720
	if (idx == EXTRA_REG_RSP_0)
		return EXTRA_REG_RSP_1;

	if (idx == EXTRA_REG_RSP_1)
		return EXTRA_REG_RSP_0;

	return idx;
}

static void intel_fixup_er(struct perf_event *event, int idx)
{
	event->hw.extra_reg.idx = idx;

	if (idx == EXTRA_REG_RSP_0) {
1721
		event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1722
		event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_0].event;
1723
		event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
1724 1725
	} else if (idx == EXTRA_REG_RSP_1) {
		event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
1726
		event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_1].event;
1727
		event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
1728 1729 1730
	}
}

1731 1732 1733 1734 1735 1736 1737
/*
 * manage allocation of shared extra msr for certain events
 *
 * sharing can be:
 * per-cpu: to be shared between the various events on a single PMU
 * per-core: per-cpu + shared by HT threads
 */
1738
static struct event_constraint *
1739
__intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
1740 1741
				   struct perf_event *event,
				   struct hw_perf_event_extra *reg)
1742
{
1743
	struct event_constraint *c = &emptyconstraint;
1744
	struct er_account *era;
1745
	unsigned long flags;
1746
	int idx = reg->idx;
1747

1748 1749 1750 1751 1752 1753
	/*
	 * reg->alloc can be set due to existing state, so for fake cpuc we
	 * need to ignore this, otherwise we might fail to allocate proper fake
	 * state for this extra reg constraint. Also see the comment below.
	 */
	if (reg->alloc && !cpuc->is_fake)
1754
		return NULL; /* call x86_get_event_constraint() */
1755

1756
again:
1757
	era = &cpuc->shared_regs->regs[idx];
1758 1759 1760 1761 1762
	/*
	 * we use spin_lock_irqsave() to avoid lockdep issues when
	 * passing a fake cpuc
	 */
	raw_spin_lock_irqsave(&era->lock, flags);
1763 1764 1765

	if (!atomic_read(&era->ref) || era->config == reg->config) {

1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788
		/*
		 * If its a fake cpuc -- as per validate_{group,event}() we
		 * shouldn't touch event state and we can avoid doing so
		 * since both will only call get_event_constraints() once
		 * on each event, this avoids the need for reg->alloc.
		 *
		 * Not doing the ER fixup will only result in era->reg being
		 * wrong, but since we won't actually try and program hardware
		 * this isn't a problem either.
		 */
		if (!cpuc->is_fake) {
			if (idx != reg->idx)
				intel_fixup_er(event, idx);

			/*
			 * x86_schedule_events() can call get_event_constraints()
			 * multiple times on events in the case of incremental
			 * scheduling(). reg->alloc ensures we only do the ER
			 * allocation once.
			 */
			reg->alloc = 1;
		}

1789 1790 1791 1792 1793 1794 1795
		/* lock in msr value */
		era->config = reg->config;
		era->reg = reg->reg;

		/* one more user */
		atomic_inc(&era->ref);

1796
		/*
1797 1798
		 * need to call x86_get_event_constraint()
		 * to check if associated event has constraints
1799
		 */
1800
		c = NULL;
1801 1802 1803 1804 1805 1806
	} else {
		idx = intel_alt_er(idx);
		if (idx != reg->idx) {
			raw_spin_unlock_irqrestore(&era->lock, flags);
			goto again;
		}
1807
	}
1808
	raw_spin_unlock_irqrestore(&era->lock, flags);
1809

1810 1811 1812 1813 1814 1815 1816 1817 1818 1819
	return c;
}

static void
__intel_shared_reg_put_constraints(struct cpu_hw_events *cpuc,
				   struct hw_perf_event_extra *reg)
{
	struct er_account *era;

	/*
1820 1821 1822 1823 1824 1825
	 * Only put constraint if extra reg was actually allocated. Also takes
	 * care of event which do not use an extra shared reg.
	 *
	 * Also, if this is a fake cpuc we shouldn't touch any event state
	 * (reg->alloc) and we don't care about leaving inconsistent cpuc state
	 * either since it'll be thrown out.
1826
	 */
1827
	if (!reg->alloc || cpuc->is_fake)
1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842
		return;

	era = &cpuc->shared_regs->regs[reg->idx];

	/* one fewer user */
	atomic_dec(&era->ref);

	/* allocate again next time */
	reg->alloc = 0;
}

static struct event_constraint *
intel_shared_regs_constraints(struct cpu_hw_events *cpuc,
			      struct perf_event *event)
{
1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859
	struct event_constraint *c = NULL, *d;
	struct hw_perf_event_extra *xreg, *breg;

	xreg = &event->hw.extra_reg;
	if (xreg->idx != EXTRA_REG_NONE) {
		c = __intel_shared_reg_get_constraints(cpuc, event, xreg);
		if (c == &emptyconstraint)
			return c;
	}
	breg = &event->hw.branch_reg;
	if (breg->idx != EXTRA_REG_NONE) {
		d = __intel_shared_reg_get_constraints(cpuc, event, breg);
		if (d == &emptyconstraint) {
			__intel_shared_reg_put_constraints(cpuc, xreg);
			c = d;
		}
	}
1860
	return c;
1861 1862
}

1863
struct event_constraint *
1864 1865
x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
			  struct perf_event *event)
1866 1867 1868 1869 1870
{
	struct event_constraint *c;

	if (x86_pmu.event_constraints) {
		for_each_event_constraint(c, x86_pmu.event_constraints) {
1871 1872
			if ((event->hw.config & c->cmask) == c->code) {
				event->hw.flags |= c->flags;
1873
				return c;
1874
			}
1875 1876 1877 1878 1879 1880
		}
	}

	return &unconstrained;
}

1881
static struct event_constraint *
1882
__intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
1883
			    struct perf_event *event)
1884 1885 1886
{
	struct event_constraint *c;

1887 1888 1889 1890
	c = intel_bts_constraints(event);
	if (c)
		return c;

1891
	c = intel_shared_regs_constraints(cpuc, event);
1892 1893 1894
	if (c)
		return c;

1895
	c = intel_pebs_constraints(event);
1896 1897 1898
	if (c)
		return c;

1899
	return x86_get_event_constraints(cpuc, idx, event);
1900 1901
}

1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912
static void
intel_start_scheduling(struct cpu_hw_events *cpuc)
{
	struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
	struct intel_excl_states *xl, *xlo;
	int tid = cpuc->excl_thread_id;
	int o_tid = 1 - tid; /* sibling thread */

	/*
	 * nothing needed if in group validation mode
	 */
1913
	if (cpuc->is_fake || !is_ht_workaround_enabled())
1914
		return;
1915

1916 1917 1918 1919 1920 1921 1922 1923 1924 1925
	/*
	 * no exclusion needed
	 */
	if (!excl_cntrs)
		return;

	xlo = &excl_cntrs->states[o_tid];
	xl = &excl_cntrs->states[tid];

	xl->sched_started = true;
1926
	xl->num_alloc_cntrs = 0;
1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951
	/*
	 * lock shared state until we are done scheduling
	 * in stop_event_scheduling()
	 * makes scheduling appear as a transaction
	 */
	WARN_ON_ONCE(!irqs_disabled());
	raw_spin_lock(&excl_cntrs->lock);

	/*
	 * save initial state of sibling thread
	 */
	memcpy(xlo->init_state, xlo->state, sizeof(xlo->init_state));
}

static void
intel_stop_scheduling(struct cpu_hw_events *cpuc)
{
	struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
	struct intel_excl_states *xl, *xlo;
	int tid = cpuc->excl_thread_id;
	int o_tid = 1 - tid; /* sibling thread */

	/*
	 * nothing needed if in group validation mode
	 */
1952
	if (cpuc->is_fake || !is_ht_workaround_enabled())
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989
		return;
	/*
	 * no exclusion needed
	 */
	if (!excl_cntrs)
		return;

	xlo = &excl_cntrs->states[o_tid];
	xl = &excl_cntrs->states[tid];

	/*
	 * make new sibling thread state visible
	 */
	memcpy(xlo->state, xlo->init_state, sizeof(xlo->state));

	xl->sched_started = false;
	/*
	 * release shared state lock (acquired in intel_start_scheduling())
	 */
	raw_spin_unlock(&excl_cntrs->lock);
}

static struct event_constraint *
intel_get_excl_constraints(struct cpu_hw_events *cpuc, struct perf_event *event,
			   int idx, struct event_constraint *c)
{
	struct event_constraint *cx;
	struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
	struct intel_excl_states *xl, *xlo;
	int is_excl, i;
	int tid = cpuc->excl_thread_id;
	int o_tid = 1 - tid; /* alternate */

	/*
	 * validating a group does not require
	 * enforcing cross-thread  exclusion
	 */
1990 1991 1992 1993 1994 1995 1996
	if (cpuc->is_fake || !is_ht_workaround_enabled())
		return c;

	/*
	 * no exclusion needed
	 */
	if (!excl_cntrs)
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
		return c;
	/*
	 * event requires exclusive counter access
	 * across HT threads
	 */
	is_excl = c->flags & PERF_X86_EVENT_EXCL;

	/*
	 * xl = state of current HT
	 * xlo = state of sibling HT
	 */
	xl = &excl_cntrs->states[tid];
	xlo = &excl_cntrs->states[o_tid];

2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
	/*
	 * do not allow scheduling of more than max_alloc_cntrs
	 * which is set to half the available generic counters.
	 * this helps avoid counter starvation of sibling thread
	 * by ensuring at most half the counters cannot be in
	 * exclusive mode. There is not designated counters for the
	 * limits. Any N/2 counters can be used. This helps with
	 * events with specifix counter constraints
	 */
	if (xl->num_alloc_cntrs++ == xl->max_alloc_cntrs)
		return &emptyconstraint;

2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108
	cx = c;

	/*
	 * because we modify the constraint, we need
	 * to make a copy. Static constraints come
	 * from static const tables.
	 *
	 * only needed when constraint has not yet
	 * been cloned (marked dynamic)
	 */
	if (!(c->flags & PERF_X86_EVENT_DYNAMIC)) {

		/* sanity check */
		if (idx < 0)
			return &emptyconstraint;

		/*
		 * grab pre-allocated constraint entry
		 */
		cx = &cpuc->constraint_list[idx];

		/*
		 * initialize dynamic constraint
		 * with static constraint
		 */
		memcpy(cx, c, sizeof(*cx));

		/*
		 * mark constraint as dynamic, so we
		 * can free it later on
		 */
		cx->flags |= PERF_X86_EVENT_DYNAMIC;
	}

	/*
	 * From here on, the constraint is dynamic.
	 * Either it was just allocated above, or it
	 * was allocated during a earlier invocation
	 * of this function
	 */

	/*
	 * Modify static constraint with current dynamic
	 * state of thread
	 *
	 * EXCLUSIVE: sibling counter measuring exclusive event
	 * SHARED   : sibling counter measuring non-exclusive event
	 * UNUSED   : sibling counter unused
	 */
	for_each_set_bit(i, cx->idxmsk, X86_PMC_IDX_MAX) {
		/*
		 * exclusive event in sibling counter
		 * our corresponding counter cannot be used
		 * regardless of our event
		 */
		if (xl->state[i] == INTEL_EXCL_EXCLUSIVE)
			__clear_bit(i, cx->idxmsk);
		/*
		 * if measuring an exclusive event, sibling
		 * measuring non-exclusive, then counter cannot
		 * be used
		 */
		if (is_excl && xl->state[i] == INTEL_EXCL_SHARED)
			__clear_bit(i, cx->idxmsk);
	}

	/*
	 * recompute actual bit weight for scheduling algorithm
	 */
	cx->weight = hweight64(cx->idxmsk64);

	/*
	 * if we return an empty mask, then switch
	 * back to static empty constraint to avoid
	 * the cost of freeing later on
	 */
	if (cx->weight == 0)
		cx = &emptyconstraint;

	return cx;
}

static struct event_constraint *
intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
			    struct perf_event *event)
{
2109 2110
	struct event_constraint *c1 = event->hw.constraint;
	struct event_constraint *c2;
2111 2112 2113 2114 2115 2116

	/*
	 * first time only
	 * - static constraint: no change across incremental scheduling calls
	 * - dynamic constraint: handled by intel_get_excl_constraints()
	 */
2117 2118 2119 2120 2121 2122
	c2 = __intel_get_event_constraints(cpuc, idx, event);
	if (c1 && (c1->flags & PERF_X86_EVENT_DYNAMIC)) {
		bitmap_copy(c1->idxmsk, c2->idxmsk, X86_PMC_IDX_MAX);
		c1->weight = c2->weight;
		c2 = c1;
	}
2123 2124

	if (cpuc->excl_cntrs)
2125
		return intel_get_excl_constraints(cpuc, event, idx, c2);
2126

2127
	return c2;
2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172
}

static void intel_put_excl_constraints(struct cpu_hw_events *cpuc,
		struct perf_event *event)
{
	struct hw_perf_event *hwc = &event->hw;
	struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
	struct intel_excl_states *xlo, *xl;
	unsigned long flags = 0; /* keep compiler happy */
	int tid = cpuc->excl_thread_id;
	int o_tid = 1 - tid;

	/*
	 * nothing needed if in group validation mode
	 */
	if (cpuc->is_fake)
		return;

	WARN_ON_ONCE(!excl_cntrs);

	if (!excl_cntrs)
		return;

	xl = &excl_cntrs->states[tid];
	xlo = &excl_cntrs->states[o_tid];

	/*
	 * put_constraint may be called from x86_schedule_events()
	 * which already has the lock held so here make locking
	 * conditional
	 */
	if (!xl->sched_started)
		raw_spin_lock_irqsave(&excl_cntrs->lock, flags);

	/*
	 * if event was actually assigned, then mark the
	 * counter state as unused now
	 */
	if (hwc->idx >= 0)
		xlo->state[hwc->idx] = INTEL_EXCL_UNUSED;

	if (!xl->sched_started)
		raw_spin_unlock_irqrestore(&excl_cntrs->lock, flags);
}

2173 2174
static void
intel_put_shared_regs_event_constraints(struct cpu_hw_events *cpuc,
2175 2176
					struct perf_event *event)
{
2177
	struct hw_perf_event_extra *reg;
2178

2179 2180 2181
	reg = &event->hw.extra_reg;
	if (reg->idx != EXTRA_REG_NONE)
		__intel_shared_reg_put_constraints(cpuc, reg);
2182 2183 2184 2185

	reg = &event->hw.branch_reg;
	if (reg->idx != EXTRA_REG_NONE)
		__intel_shared_reg_put_constraints(cpuc, reg);
2186
}
2187

2188 2189 2190
static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
					struct perf_event *event)
{
2191 2192
	struct event_constraint *c = event->hw.constraint;

2193
	intel_put_shared_regs_event_constraints(cpuc, event);
2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241

	/*
	 * is PMU has exclusive counter restrictions, then
	 * all events are subject to and must call the
	 * put_excl_constraints() routine
	 */
	if (c && cpuc->excl_cntrs)
		intel_put_excl_constraints(cpuc, event);

	/* cleanup dynamic constraint */
	if (c && (c->flags & PERF_X86_EVENT_DYNAMIC))
		event->hw.constraint = NULL;
}

static void intel_commit_scheduling(struct cpu_hw_events *cpuc,
				    struct perf_event *event, int cntr)
{
	struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
	struct event_constraint *c = event->hw.constraint;
	struct intel_excl_states *xlo, *xl;
	int tid = cpuc->excl_thread_id;
	int o_tid = 1 - tid;
	int is_excl;

	if (cpuc->is_fake || !c)
		return;

	is_excl = c->flags & PERF_X86_EVENT_EXCL;

	if (!(c->flags & PERF_X86_EVENT_DYNAMIC))
		return;

	WARN_ON_ONCE(!excl_cntrs);

	if (!excl_cntrs)
		return;

	xl = &excl_cntrs->states[tid];
	xlo = &excl_cntrs->states[o_tid];

	WARN_ON_ONCE(!raw_spin_is_locked(&excl_cntrs->lock));

	if (cntr >= 0) {
		if (is_excl)
			xlo->init_state[cntr] = INTEL_EXCL_EXCLUSIVE;
		else
			xlo->init_state[cntr] = INTEL_EXCL_SHARED;
	}
2242 2243
}

2244
static void intel_pebs_aliases_core2(struct perf_event *event)
2245
{
2246
	if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264
		/*
		 * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
		 * (0x003c) so that we can use it with PEBS.
		 *
		 * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
		 * PEBS capable. However we can use INST_RETIRED.ANY_P
		 * (0x00c0), which is a PEBS capable event, to get the same
		 * count.
		 *
		 * INST_RETIRED.ANY_P counts the number of cycles that retires
		 * CNTMASK instructions. By setting CNTMASK to a value (16)
		 * larger than the maximum number of instructions that can be
		 * retired per cycle (4) and then inverting the condition, we
		 * count all cycles that retire 16 or less instructions, which
		 * is every cycle.
		 *
		 * Thereby we gain a PEBS capable cycle counter.
		 */
2265 2266
		u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);

2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293
		alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
		event->hw.config = alt_config;
	}
}

static void intel_pebs_aliases_snb(struct perf_event *event)
{
	if ((event->hw.config & X86_RAW_EVENT_MASK) == 0x003c) {
		/*
		 * Use an alternative encoding for CPU_CLK_UNHALTED.THREAD_P
		 * (0x003c) so that we can use it with PEBS.
		 *
		 * The regular CPU_CLK_UNHALTED.THREAD_P event (0x003c) isn't
		 * PEBS capable. However we can use UOPS_RETIRED.ALL
		 * (0x01c2), which is a PEBS capable event, to get the same
		 * count.
		 *
		 * UOPS_RETIRED.ALL counts the number of cycles that retires
		 * CNTMASK micro-ops. By setting CNTMASK to a value (16)
		 * larger than the maximum number of micro-ops that can be
		 * retired per cycle (4) and then inverting the condition, we
		 * count all cycles that retire 16 or less micro-ops, which
		 * is every cycle.
		 *
		 * Thereby we gain a PEBS capable cycle counter.
		 */
		u64 alt_config = X86_CONFIG(.event=0xc2, .umask=0x01, .inv=1, .cmask=16);
2294 2295 2296 2297

		alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
		event->hw.config = alt_config;
	}
2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308
}

static int intel_pmu_hw_config(struct perf_event *event)
{
	int ret = x86_pmu_hw_config(event);

	if (ret)
		return ret;

	if (event->attr.precise_ip && x86_pmu.pebs_aliases)
		x86_pmu.pebs_aliases(event);
2309

2310
	if (needs_branch_stack(event)) {
2311 2312 2313
		ret = intel_pmu_setup_lbr_filter(event);
		if (ret)
			return ret;
2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324

		/*
		 * BTS is set up earlier in this path, so don't account twice
		 */
		if (!intel_pmu_has_bts(event)) {
			/* disallow lbr if conflicting events are present */
			if (x86_add_exclusive(x86_lbr_exclusive_lbr))
				return -EBUSY;

			event->destroy = hw_perf_lbr_event_destroy;
		}
2325 2326
	}

2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343
	if (event->attr.type != PERF_TYPE_RAW)
		return 0;

	if (!(event->attr.config & ARCH_PERFMON_EVENTSEL_ANY))
		return 0;

	if (x86_pmu.version < 3)
		return -EINVAL;

	if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
		return -EACCES;

	event->hw.config |= ARCH_PERFMON_EVENTSEL_ANY;

	return 0;
}

2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354
struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
{
	if (x86_pmu.guest_get_msrs)
		return x86_pmu.guest_get_msrs(nr);
	*nr = 0;
	return NULL;
}
EXPORT_SYMBOL_GPL(perf_guest_get_msrs);

static struct perf_guest_switch_msr *intel_guest_get_msrs(int *nr)
{
2355
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2356 2357 2358 2359 2360
	struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;

	arr[0].msr = MSR_CORE_PERF_GLOBAL_CTRL;
	arr[0].host = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask;
	arr[0].guest = x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_host_mask;
2361 2362 2363 2364 2365 2366 2367 2368
	/*
	 * If PMU counter has PEBS enabled it is not enough to disable counter
	 * on a guest entry since PEBS memory write can overshoot guest entry
	 * and corrupt guest memory. Disabling PEBS solves the problem.
	 */
	arr[1].msr = MSR_IA32_PEBS_ENABLE;
	arr[1].host = cpuc->pebs_enabled;
	arr[1].guest = 0;
2369

2370
	*nr = 2;
2371 2372 2373 2374 2375
	return arr;
}

static struct perf_guest_switch_msr *core_guest_get_msrs(int *nr)
{
2376
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409
	struct perf_guest_switch_msr *arr = cpuc->guest_switch_msrs;
	int idx;

	for (idx = 0; idx < x86_pmu.num_counters; idx++)  {
		struct perf_event *event = cpuc->events[idx];

		arr[idx].msr = x86_pmu_config_addr(idx);
		arr[idx].host = arr[idx].guest = 0;

		if (!test_bit(idx, cpuc->active_mask))
			continue;

		arr[idx].host = arr[idx].guest =
			event->hw.config | ARCH_PERFMON_EVENTSEL_ENABLE;

		if (event->attr.exclude_host)
			arr[idx].host &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
		else if (event->attr.exclude_guest)
			arr[idx].guest &= ~ARCH_PERFMON_EVENTSEL_ENABLE;
	}

	*nr = x86_pmu.num_counters;
	return arr;
}

static void core_pmu_enable_event(struct perf_event *event)
{
	if (!event->attr.exclude_host)
		x86_pmu_enable_event(event);
}

static void core_pmu_enable_all(int added)
{
2410
	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423
	int idx;

	for (idx = 0; idx < x86_pmu.num_counters; idx++) {
		struct hw_perf_event *hwc = &cpuc->events[idx]->hw;

		if (!test_bit(idx, cpuc->active_mask) ||
				cpuc->events[idx]->attr.exclude_host)
			continue;

		__x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
	}
}

2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443
static int hsw_hw_config(struct perf_event *event)
{
	int ret = intel_pmu_hw_config(event);

	if (ret)
		return ret;
	if (!boot_cpu_has(X86_FEATURE_RTM) && !boot_cpu_has(X86_FEATURE_HLE))
		return 0;
	event->hw.config |= event->attr.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED);

	/*
	 * IN_TX/IN_TX-CP filters are not supported by the Haswell PMU with
	 * PEBS or in ANY thread mode. Since the results are non-sensical forbid
	 * this combination.
	 */
	if ((event->hw.config & (HSW_IN_TX|HSW_IN_TX_CHECKPOINTED)) &&
	     ((event->hw.config & ARCH_PERFMON_EVENTSEL_ANY) ||
	      event->attr.precise_ip > 0))
		return -EOPNOTSUPP;

2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457
	if (event_is_checkpointed(event)) {
		/*
		 * Sampling of checkpointed events can cause situations where
		 * the CPU constantly aborts because of a overflow, which is
		 * then checkpointed back and ignored. Forbid checkpointing
		 * for sampling.
		 *
		 * But still allow a long sampling period, so that perf stat
		 * from KVM works.
		 */
		if (event->attr.sample_period > 0 &&
		    event->attr.sample_period < 0x7fffffff)
			return -EOPNOTSUPP;
	}
2458 2459 2460 2461 2462 2463 2464
	return 0;
}

static struct event_constraint counter2_constraint =
			EVENT_CONSTRAINT(0, 0x4, 0);

static struct event_constraint *
2465 2466
hsw_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
			  struct perf_event *event)
2467
{
2468 2469 2470
	struct event_constraint *c;

	c = intel_get_event_constraints(cpuc, idx, event);
2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481

	/* Handle special quirk on in_tx_checkpointed only in counter 2 */
	if (event->hw.config & HSW_IN_TX_CHECKPOINTED) {
		if (c->idxmsk64 & (1U << 2))
			return &counter2_constraint;
		return &emptyconstraint;
	}

	return c;
}

2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507
/*
 * Broadwell:
 *
 * The INST_RETIRED.ALL period always needs to have lowest 6 bits cleared
 * (BDM55) and it must not use a period smaller than 100 (BDM11). We combine
 * the two to enforce a minimum period of 128 (the smallest value that has bits
 * 0-5 cleared and >= 100).
 *
 * Because of how the code in x86_perf_event_set_period() works, the truncation
 * of the lower 6 bits is 'harmless' as we'll occasionally add a longer period
 * to make up for the 'lost' events due to carrying the 'error' in period_left.
 *
 * Therefore the effective (average) period matches the requested period,
 * despite coarser hardware granularity.
 */
static unsigned bdw_limit_period(struct perf_event *event, unsigned left)
{
	if ((event->hw.config & INTEL_ARCH_EVENT_MASK) ==
			X86_CONFIG(.event=0xc0, .umask=0x01)) {
		if (left < 128)
			left = 128;
		left &= ~0x3fu;
	}
	return left;
}

2508 2509 2510 2511 2512 2513 2514
PMU_FORMAT_ATTR(event,	"config:0-7"	);
PMU_FORMAT_ATTR(umask,	"config:8-15"	);
PMU_FORMAT_ATTR(edge,	"config:18"	);
PMU_FORMAT_ATTR(pc,	"config:19"	);
PMU_FORMAT_ATTR(any,	"config:21"	); /* v3 + */
PMU_FORMAT_ATTR(inv,	"config:23"	);
PMU_FORMAT_ATTR(cmask,	"config:24-31"	);
2515 2516
PMU_FORMAT_ATTR(in_tx,  "config:32");
PMU_FORMAT_ATTR(in_tx_cp, "config:33");
2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527

static struct attribute *intel_arch_formats_attr[] = {
	&format_attr_event.attr,
	&format_attr_umask.attr,
	&format_attr_edge.attr,
	&format_attr_pc.attr,
	&format_attr_inv.attr,
	&format_attr_cmask.attr,
	NULL,
};

2528 2529 2530 2531 2532 2533 2534
ssize_t intel_event_sysfs_show(char *page, u64 config)
{
	u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT);

	return x86_event_sysfs_show(page, config, event);
}

2535
struct intel_shared_regs *allocate_shared_regs(int cpu)
2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553
{
	struct intel_shared_regs *regs;
	int i;

	regs = kzalloc_node(sizeof(struct intel_shared_regs),
			    GFP_KERNEL, cpu_to_node(cpu));
	if (regs) {
		/*
		 * initialize the locks to keep lockdep happy
		 */
		for (i = 0; i < EXTRA_REG_MAX; i++)
			raw_spin_lock_init(&regs->regs[i].lock);

		regs->core_id = -1;
	}
	return regs;
}

2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574
static struct intel_excl_cntrs *allocate_excl_cntrs(int cpu)
{
	struct intel_excl_cntrs *c;
	int i;

	c = kzalloc_node(sizeof(struct intel_excl_cntrs),
			 GFP_KERNEL, cpu_to_node(cpu));
	if (c) {
		raw_spin_lock_init(&c->lock);
		for (i = 0; i < X86_PMC_IDX_MAX; i++) {
			c->states[0].state[i] = INTEL_EXCL_UNUSED;
			c->states[0].init_state[i] = INTEL_EXCL_UNUSED;

			c->states[1].state[i] = INTEL_EXCL_UNUSED;
			c->states[1].init_state[i] = INTEL_EXCL_UNUSED;
		}
		c->core_id = -1;
	}
	return c;
}

2575 2576 2577 2578
static int intel_pmu_cpu_prepare(int cpu)
{
	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);

2579 2580 2581 2582 2583
	if (x86_pmu.extra_regs || x86_pmu.lbr_sel_map) {
		cpuc->shared_regs = allocate_shared_regs(cpu);
		if (!cpuc->shared_regs)
			return NOTIFY_BAD;
	}
2584

2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599
	if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
		size_t sz = X86_PMC_IDX_MAX * sizeof(struct event_constraint);

		cpuc->constraint_list = kzalloc(sz, GFP_KERNEL);
		if (!cpuc->constraint_list)
			return NOTIFY_BAD;

		cpuc->excl_cntrs = allocate_excl_cntrs(cpu);
		if (!cpuc->excl_cntrs) {
			kfree(cpuc->constraint_list);
			kfree(cpuc->shared_regs);
			return NOTIFY_BAD;
		}
		cpuc->excl_thread_id = 0;
	}
2600 2601 2602 2603

	return NOTIFY_OK;
}

2604 2605
static void intel_pmu_cpu_starting(int cpu)
{
2606 2607 2608 2609
	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
	int core_id = topology_core_id(cpu);
	int i;

2610 2611 2612 2613 2614 2615
	init_debug_store_on_cpu(cpu);
	/*
	 * Deal with CPUs that don't clear their LBRs on power-up.
	 */
	intel_pmu_lbr_reset();

2616 2617 2618
	cpuc->lbr_sel = NULL;

	if (!cpuc->shared_regs)
2619 2620
		return;

2621
	if (!(x86_pmu.flags & PMU_FL_NO_HT_SHARING)) {
2622 2623
		void **onln = &cpuc->kfree_on_online[X86_PERF_KFREE_SHARED];

2624 2625
		for_each_cpu(i, topology_thread_cpumask(cpu)) {
			struct intel_shared_regs *pc;
2626

2627 2628
			pc = per_cpu(cpu_hw_events, i).shared_regs;
			if (pc && pc->core_id == core_id) {
2629
				*onln = cpuc->shared_regs;
2630 2631 2632
				cpuc->shared_regs = pc;
				break;
			}
2633
		}
2634 2635
		cpuc->shared_regs->core_id = core_id;
		cpuc->shared_regs->refcnt++;
2636 2637
	}

2638 2639
	if (x86_pmu.lbr_sel_map)
		cpuc->lbr_sel = &cpuc->shared_regs->regs[EXTRA_REG_LBR];
2640 2641

	if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
2642 2643
		int h = x86_pmu.num_counters >> 1;

2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656
		for_each_cpu(i, topology_thread_cpumask(cpu)) {
			struct intel_excl_cntrs *c;

			c = per_cpu(cpu_hw_events, i).excl_cntrs;
			if (c && c->core_id == core_id) {
				cpuc->kfree_on_online[1] = cpuc->excl_cntrs;
				cpuc->excl_cntrs = c;
				cpuc->excl_thread_id = 1;
				break;
			}
		}
		cpuc->excl_cntrs->core_id = core_id;
		cpuc->excl_cntrs->refcnt++;
2657 2658 2659 2660 2661
		/*
		 * set hard limit to half the number of generic counters
		 */
		cpuc->excl_cntrs->states[0].max_alloc_cntrs = h;
		cpuc->excl_cntrs->states[1].max_alloc_cntrs = h;
2662
	}
2663 2664
}

2665
static void free_excl_cntrs(int cpu)
2666
{
2667
	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
2668
	struct intel_excl_cntrs *c;
2669

2670 2671 2672 2673 2674 2675 2676 2677
	c = cpuc->excl_cntrs;
	if (c) {
		if (c->core_id == -1 || --c->refcnt == 0)
			kfree(c);
		cpuc->excl_cntrs = NULL;
		kfree(cpuc->constraint_list);
		cpuc->constraint_list = NULL;
	}
2678
}
2679

2680 2681 2682 2683 2684 2685 2686 2687 2688 2689
static void intel_pmu_cpu_dying(int cpu)
{
	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
	struct intel_shared_regs *pc;

	pc = cpuc->shared_regs;
	if (pc) {
		if (pc->core_id == -1 || --pc->refcnt == 0)
			kfree(pc);
		cpuc->shared_regs = NULL;
2690 2691
	}

2692 2693
	free_excl_cntrs(cpu);

2694 2695 2696
	fini_debug_store_on_cpu(cpu);
}

2697 2698
PMU_FORMAT_ATTR(offcore_rsp, "config1:0-63");

2699 2700
PMU_FORMAT_ATTR(ldlat, "config1:0-15");

2701 2702 2703 2704 2705 2706 2707 2708
static struct attribute *intel_arch3_formats_attr[] = {
	&format_attr_event.attr,
	&format_attr_umask.attr,
	&format_attr_edge.attr,
	&format_attr_pc.attr,
	&format_attr_any.attr,
	&format_attr_inv.attr,
	&format_attr_cmask.attr,
2709 2710
	&format_attr_in_tx.attr,
	&format_attr_in_tx_cp.attr,
2711 2712

	&format_attr_offcore_rsp.attr, /* XXX do NHM/WSM + SNB breakout */
2713
	&format_attr_ldlat.attr, /* PEBS load latency */
2714 2715 2716
	NULL,
};

2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754
static __initconst const struct x86_pmu core_pmu = {
	.name			= "core",
	.handle_irq		= x86_pmu_handle_irq,
	.disable_all		= x86_pmu_disable_all,
	.enable_all		= core_pmu_enable_all,
	.enable			= core_pmu_enable_event,
	.disable		= x86_pmu_disable_event,
	.hw_config		= x86_pmu_hw_config,
	.schedule_events	= x86_schedule_events,
	.eventsel		= MSR_ARCH_PERFMON_EVENTSEL0,
	.perfctr		= MSR_ARCH_PERFMON_PERFCTR0,
	.event_map		= intel_pmu_event_map,
	.max_events		= ARRAY_SIZE(intel_perfmon_event_map),
	.apic			= 1,
	/*
	 * Intel PMCs cannot be accessed sanely above 32-bit width,
	 * so we install an artificial 1<<31 period regardless of
	 * the generic event period:
	 */
	.max_period		= (1ULL<<31) - 1,
	.get_event_constraints	= intel_get_event_constraints,
	.put_event_constraints	= intel_put_event_constraints,
	.event_constraints	= intel_core_event_constraints,
	.guest_get_msrs		= core_guest_get_msrs,
	.format_attrs		= intel_arch_formats_attr,
	.events_sysfs_show	= intel_event_sysfs_show,

	/*
	 * Virtual (or funny metal) CPU can define x86_pmu.extra_regs
	 * together with PMU version 1 and thus be using core_pmu with
	 * shared_regs. We need following callbacks here to allocate
	 * it properly.
	 */
	.cpu_prepare		= intel_pmu_cpu_prepare,
	.cpu_starting		= intel_pmu_cpu_starting,
	.cpu_dying		= intel_pmu_cpu_dying,
};

2755
static __initconst const struct x86_pmu intel_pmu = {
2756 2757 2758 2759 2760 2761
	.name			= "Intel",
	.handle_irq		= intel_pmu_handle_irq,
	.disable_all		= intel_pmu_disable_all,
	.enable_all		= intel_pmu_enable_all,
	.enable			= intel_pmu_enable_event,
	.disable		= intel_pmu_disable_event,
2762
	.hw_config		= intel_pmu_hw_config,
2763
	.schedule_events	= x86_schedule_events,
2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774
	.eventsel		= MSR_ARCH_PERFMON_EVENTSEL0,
	.perfctr		= MSR_ARCH_PERFMON_PERFCTR0,
	.event_map		= intel_pmu_event_map,
	.max_events		= ARRAY_SIZE(intel_perfmon_event_map),
	.apic			= 1,
	/*
	 * Intel PMCs cannot be accessed sanely above 32 bit width,
	 * so we install an artificial 1<<31 period regardless of
	 * the generic event period:
	 */
	.max_period		= (1ULL << 31) - 1,
2775
	.get_event_constraints	= intel_get_event_constraints,
2776
	.put_event_constraints	= intel_put_event_constraints,
2777
	.pebs_aliases		= intel_pebs_aliases_core2,
2778

2779
	.format_attrs		= intel_arch3_formats_attr,
2780
	.events_sysfs_show	= intel_event_sysfs_show,
2781

2782
	.cpu_prepare		= intel_pmu_cpu_prepare,
2783 2784
	.cpu_starting		= intel_pmu_cpu_starting,
	.cpu_dying		= intel_pmu_cpu_dying,
2785
	.guest_get_msrs		= intel_guest_get_msrs,
2786
	.sched_task		= intel_pmu_lbr_sched_task,
2787 2788
};

2789
static __init void intel_clovertown_quirk(void)
2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804
{
	/*
	 * PEBS is unreliable due to:
	 *
	 *   AJ67  - PEBS may experience CPL leaks
	 *   AJ68  - PEBS PMI may be delayed by one event
	 *   AJ69  - GLOBAL_STATUS[62] will only be set when DEBUGCTL[12]
	 *   AJ106 - FREEZE_LBRS_ON_PMI doesn't work in combination with PEBS
	 *
	 * AJ67 could be worked around by restricting the OS/USR flags.
	 * AJ69 could be worked around by setting PMU_FREEZE_ON_PMI.
	 *
	 * AJ106 could possibly be worked around by not allowing LBR
	 *       usage from PEBS, including the fixup.
	 * AJ68  could possibly be worked around by always programming
2805
	 *	 a pebs_event_reset[0] value and coping with the lost events.
2806 2807 2808 2809
	 *
	 * But taken together it might just make sense to not enable PEBS on
	 * these chips.
	 */
2810
	pr_warn("PEBS disabled due to CPU errata\n");
2811 2812 2813 2814
	x86_pmu.pebs = 0;
	x86_pmu.pebs_constraints = NULL;
}

2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860
static int intel_snb_pebs_broken(int cpu)
{
	u32 rev = UINT_MAX; /* default to broken for unknown models */

	switch (cpu_data(cpu).x86_model) {
	case 42: /* SNB */
		rev = 0x28;
		break;

	case 45: /* SNB-EP */
		switch (cpu_data(cpu).x86_mask) {
		case 6: rev = 0x618; break;
		case 7: rev = 0x70c; break;
		}
	}

	return (cpu_data(cpu).microcode < rev);
}

static void intel_snb_check_microcode(void)
{
	int pebs_broken = 0;
	int cpu;

	get_online_cpus();
	for_each_online_cpu(cpu) {
		if ((pebs_broken = intel_snb_pebs_broken(cpu)))
			break;
	}
	put_online_cpus();

	if (pebs_broken == x86_pmu.pebs_broken)
		return;

	/*
	 * Serialized by the microcode lock..
	 */
	if (x86_pmu.pebs_broken) {
		pr_info("PEBS enabled due to microcode update\n");
		x86_pmu.pebs_broken = 0;
	} else {
		pr_info("PEBS disabled due to CPU errata, please upgrade microcode\n");
		x86_pmu.pebs_broken = 1;
	}
}

2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895
/*
 * Under certain circumstances, access certain MSR may cause #GP.
 * The function tests if the input MSR can be safely accessed.
 */
static bool check_msr(unsigned long msr, u64 mask)
{
	u64 val_old, val_new, val_tmp;

	/*
	 * Read the current value, change it and read it back to see if it
	 * matches, this is needed to detect certain hardware emulators
	 * (qemu/kvm) that don't trap on the MSR access and always return 0s.
	 */
	if (rdmsrl_safe(msr, &val_old))
		return false;

	/*
	 * Only change the bits which can be updated by wrmsrl.
	 */
	val_tmp = val_old ^ mask;
	if (wrmsrl_safe(msr, val_tmp) ||
	    rdmsrl_safe(msr, &val_new))
		return false;

	if (val_new != val_tmp)
		return false;

	/* Here it's sure that the MSR can be safely accessed.
	 * Restore the old value and return.
	 */
	wrmsrl(msr, val_old);

	return true;
}

2896
static __init void intel_sandybridge_quirk(void)
2897
{
2898 2899
	x86_pmu.check_microcode = intel_snb_check_microcode;
	intel_snb_check_microcode();
2900 2901
}

2902 2903 2904 2905 2906 2907 2908 2909
static const struct { int id; char *name; } intel_arch_events_map[] __initconst = {
	{ PERF_COUNT_HW_CPU_CYCLES, "cpu cycles" },
	{ PERF_COUNT_HW_INSTRUCTIONS, "instructions" },
	{ PERF_COUNT_HW_BUS_CYCLES, "bus cycles" },
	{ PERF_COUNT_HW_CACHE_REFERENCES, "cache references" },
	{ PERF_COUNT_HW_CACHE_MISSES, "cache misses" },
	{ PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branch instructions" },
	{ PERF_COUNT_HW_BRANCH_MISSES, "branch misses" },
2910 2911
};

2912 2913 2914 2915 2916 2917 2918
static __init void intel_arch_events_quirk(void)
{
	int bit;

	/* disable event that reported as not presend by cpuid */
	for_each_set_bit(bit, x86_pmu.events_mask, ARRAY_SIZE(intel_arch_events_map)) {
		intel_perfmon_event_map[intel_arch_events_map[bit].id] = 0;
2919 2920
		pr_warn("CPUID marked event: \'%s\' unavailable\n",
			intel_arch_events_map[bit].name);
2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938
	}
}

static __init void intel_nehalem_quirk(void)
{
	union cpuid10_ebx ebx;

	ebx.full = x86_pmu.events_maskl;
	if (ebx.split.no_branch_misses_retired) {
		/*
		 * Erratum AAJ80 detected, we work it around by using
		 * the BR_MISP_EXEC.ANY event. This will over-count
		 * branch-misses, but it's still much better than the
		 * architectural event which is often completely bogus:
		 */
		intel_perfmon_event_map[PERF_COUNT_HW_BRANCH_MISSES] = 0x7f89;
		ebx.split.no_branch_misses_retired = 0;
		x86_pmu.events_maskl = ebx.full;
2939
		pr_info("CPU erratum AAJ80 worked around\n");
2940 2941 2942
	}
}

2943 2944 2945 2946 2947 2948 2949
/*
 * enable software workaround for errata:
 * SNB: BJ122
 * IVB: BV98
 * HSW: HSD29
 *
 * Only needed when HT is enabled. However detecting
2950 2951 2952 2953
 * if HT is enabled is difficult (model specific). So instead,
 * we enable the workaround in the early boot, and verify if
 * it is needed in a later initcall phase once we have valid
 * topology information to check if HT is actually enabled
2954 2955 2956
 */
static __init void intel_ht_bug(void)
{
2957
	x86_pmu.flags |= PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED;
2958 2959 2960 2961 2962 2963

	x86_pmu.commit_scheduling = intel_commit_scheduling;
	x86_pmu.start_scheduling = intel_start_scheduling;
	x86_pmu.stop_scheduling = intel_stop_scheduling;
}

2964 2965
EVENT_ATTR_STR(mem-loads,	mem_ld_hsw,	"event=0xcd,umask=0x1,ldlat=3");
EVENT_ATTR_STR(mem-stores,	mem_st_hsw,	"event=0xd0,umask=0x82")
2966

2967
/* Haswell special events */
2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979
EVENT_ATTR_STR(tx-start,	tx_start,	"event=0xc9,umask=0x1");
EVENT_ATTR_STR(tx-commit,	tx_commit,	"event=0xc9,umask=0x2");
EVENT_ATTR_STR(tx-abort,	tx_abort,	"event=0xc9,umask=0x4");
EVENT_ATTR_STR(tx-capacity,	tx_capacity,	"event=0x54,umask=0x2");
EVENT_ATTR_STR(tx-conflict,	tx_conflict,	"event=0x54,umask=0x1");
EVENT_ATTR_STR(el-start,	el_start,	"event=0xc8,umask=0x1");
EVENT_ATTR_STR(el-commit,	el_commit,	"event=0xc8,umask=0x2");
EVENT_ATTR_STR(el-abort,	el_abort,	"event=0xc8,umask=0x4");
EVENT_ATTR_STR(el-capacity,	el_capacity,	"event=0x54,umask=0x2");
EVENT_ATTR_STR(el-conflict,	el_conflict,	"event=0x54,umask=0x1");
EVENT_ATTR_STR(cycles-t,	cycles_t,	"event=0x3c,in_tx=1");
EVENT_ATTR_STR(cycles-ct,	cycles_ct,	"event=0x3c,in_tx=1,in_tx_cp=1");
2980

2981
static struct attribute *hsw_events_attrs[] = {
2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993
	EVENT_PTR(tx_start),
	EVENT_PTR(tx_commit),
	EVENT_PTR(tx_abort),
	EVENT_PTR(tx_capacity),
	EVENT_PTR(tx_conflict),
	EVENT_PTR(el_start),
	EVENT_PTR(el_commit),
	EVENT_PTR(el_abort),
	EVENT_PTR(el_capacity),
	EVENT_PTR(el_conflict),
	EVENT_PTR(cycles_t),
	EVENT_PTR(cycles_ct),
2994 2995 2996 2997 2998
	EVENT_PTR(mem_ld_hsw),
	EVENT_PTR(mem_st_hsw),
	NULL
};

2999
__init int intel_pmu_init(void)
3000 3001 3002
{
	union cpuid10_edx edx;
	union cpuid10_eax eax;
3003
	union cpuid10_ebx ebx;
3004
	struct event_constraint *c;
3005
	unsigned int unused;
3006 3007
	struct extra_reg *er;
	int version, i;
3008 3009

	if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
3010 3011 3012
		switch (boot_cpu_data.x86) {
		case 0x6:
			return p6_pmu_init();
3013 3014
		case 0xb:
			return knc_pmu_init();
3015 3016 3017
		case 0xf:
			return p4_pmu_init();
		}
3018 3019 3020 3021 3022 3023 3024
		return -ENODEV;
	}

	/*
	 * Check whether the Architectural PerfMon supports
	 * Branch Misses Retired hw_event or not.
	 */
3025 3026
	cpuid(10, &eax.full, &ebx.full, &unused, &edx.full);
	if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
3027 3028 3029 3030 3031 3032 3033 3034 3035
		return -ENODEV;

	version = eax.split.version_id;
	if (version < 2)
		x86_pmu = core_pmu;
	else
		x86_pmu = intel_pmu;

	x86_pmu.version			= version;
3036 3037 3038
	x86_pmu.num_counters		= eax.split.num_counters;
	x86_pmu.cntval_bits		= eax.split.bit_width;
	x86_pmu.cntval_mask		= (1ULL << eax.split.bit_width) - 1;
3039

3040 3041 3042
	x86_pmu.events_maskl		= ebx.full;
	x86_pmu.events_mask_len		= eax.split.mask_length;

3043 3044
	x86_pmu.max_pebs_events		= min_t(unsigned, MAX_PEBS_EVENTS, x86_pmu.num_counters);

3045 3046 3047 3048 3049
	/*
	 * Quirk: v2 perfmon does not report fixed-purpose events, so
	 * assume at least 3 events:
	 */
	if (version > 1)
3050
		x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
3051

3052
	if (boot_cpu_has(X86_FEATURE_PDCM)) {
3053 3054 3055 3056 3057 3058
		u64 capabilities;

		rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
		x86_pmu.intel_cap.capabilities = capabilities;
	}

3059 3060
	intel_ds_init();

3061 3062
	x86_add_quirk(intel_arch_events_quirk); /* Install first, so it runs last */

3063 3064 3065 3066
	/*
	 * Install the hw-cache-events table:
	 */
	switch (boot_cpu_data.x86_model) {
3067
	case 14: /* 65nm Core "Yonah" */
3068 3069 3070
		pr_cont("Core events, ");
		break;

3071
	case 15: /* 65nm Core2 "Merom"          */
3072
		x86_add_quirk(intel_clovertown_quirk);
3073 3074 3075
	case 22: /* 65nm Core2 "Merom-L"        */
	case 23: /* 45nm Core2 "Penryn"         */
	case 29: /* 45nm Core2 "Dunnington (MP) */
3076 3077 3078
		memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
		       sizeof(hw_cache_event_ids));

3079 3080
		intel_pmu_lbr_init_core();

3081
		x86_pmu.event_constraints = intel_core2_event_constraints;
3082
		x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
3083 3084 3085
		pr_cont("Core2 events, ");
		break;

3086 3087 3088
	case 30: /* 45nm Nehalem    */
	case 26: /* 45nm Nehalem-EP */
	case 46: /* 45nm Nehalem-EX */
3089 3090
		memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
		       sizeof(hw_cache_event_ids));
3091 3092
		memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
		       sizeof(hw_cache_extra_regs));
3093

3094 3095
		intel_pmu_lbr_init_nhm();

3096
		x86_pmu.event_constraints = intel_nehalem_event_constraints;
3097
		x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
3098
		x86_pmu.enable_all = intel_pmu_nhm_enable_all;
3099
		x86_pmu.extra_regs = intel_nehalem_extra_regs;
3100

3101 3102
		x86_pmu.cpu_events = nhm_events_attrs;

3103
		/* UOPS_ISSUED.STALLED_CYCLES */
3104 3105
		intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
			X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
3106
		/* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
3107 3108
		intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
			X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
3109

3110
		x86_add_quirk(intel_nehalem_quirk);
3111

3112
		pr_cont("Nehalem events, ");
3113
		break;
3114

3115 3116 3117 3118 3119
	case 28: /* 45nm Atom "Pineview"   */
	case 38: /* 45nm Atom "Lincroft"   */
	case 39: /* 32nm Atom "Penwell"    */
	case 53: /* 32nm Atom "Cloverview" */
	case 54: /* 32nm Atom "Cedarview"  */
3120 3121 3122
		memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
		       sizeof(hw_cache_event_ids));

3123 3124
		intel_pmu_lbr_init_atom();

3125
		x86_pmu.event_constraints = intel_gen_event_constraints;
3126
		x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
3127 3128 3129
		pr_cont("Atom events, ");
		break;

3130
	case 55: /* 22nm Atom "Silvermont"                */
3131
	case 76: /* 14nm Atom "Airmont"                   */
3132
	case 77: /* 22nm Atom "Silvermont Avoton/Rangely" */
3133 3134 3135 3136 3137 3138 3139 3140 3141 3142
		memcpy(hw_cache_event_ids, slm_hw_cache_event_ids,
			sizeof(hw_cache_event_ids));
		memcpy(hw_cache_extra_regs, slm_hw_cache_extra_regs,
		       sizeof(hw_cache_extra_regs));

		intel_pmu_lbr_init_atom();

		x86_pmu.event_constraints = intel_slm_event_constraints;
		x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
		x86_pmu.extra_regs = intel_slm_extra_regs;
3143
		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3144 3145 3146
		pr_cont("Silvermont events, ");
		break;

3147 3148 3149
	case 37: /* 32nm Westmere    */
	case 44: /* 32nm Westmere-EP */
	case 47: /* 32nm Westmere-EX */
3150 3151
		memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
		       sizeof(hw_cache_event_ids));
3152 3153
		memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
		       sizeof(hw_cache_extra_regs));
3154

3155 3156
		intel_pmu_lbr_init_nhm();

3157
		x86_pmu.event_constraints = intel_westmere_event_constraints;
3158
		x86_pmu.enable_all = intel_pmu_nhm_enable_all;
3159
		x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
3160
		x86_pmu.extra_regs = intel_westmere_extra_regs;
3161
		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
3162

3163 3164
		x86_pmu.cpu_events = nhm_events_attrs;

3165
		/* UOPS_ISSUED.STALLED_CYCLES */
3166 3167
		intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
			X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
3168
		/* UOPS_EXECUTED.CORE_ACTIVE_CYCLES,c=1,i=1 */
3169 3170
		intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
			X86_CONFIG(.event=0xb1, .umask=0x3f, .inv=1, .cmask=1);
3171

3172 3173
		pr_cont("Westmere events, ");
		break;
3174

3175 3176
	case 42: /* 32nm SandyBridge         */
	case 45: /* 32nm SandyBridge-E/EN/EP */
3177
		x86_add_quirk(intel_sandybridge_quirk);
3178
		x86_add_quirk(intel_ht_bug);
3179 3180
		memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
		       sizeof(hw_cache_event_ids));
3181 3182
		memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
		       sizeof(hw_cache_extra_regs));
3183

3184
		intel_pmu_lbr_init_snb();
3185 3186

		x86_pmu.event_constraints = intel_snb_event_constraints;
3187
		x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
3188
		x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3189 3190 3191 3192
		if (boot_cpu_data.x86_model == 45)
			x86_pmu.extra_regs = intel_snbep_extra_regs;
		else
			x86_pmu.extra_regs = intel_snb_extra_regs;
3193 3194


3195
		/* all extra regs are per-cpu when HT is on */
3196 3197
		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3198

3199 3200
		x86_pmu.cpu_events = snb_events_attrs;

3201
		/* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
3202 3203
		intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
			X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);
3204
		/* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/
3205 3206
		intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
			X86_CONFIG(.event=0xb1, .umask=0x01, .inv=1, .cmask=1);
3207

3208 3209
		pr_cont("SandyBridge events, ");
		break;
3210 3211 3212

	case 58: /* 22nm IvyBridge       */
	case 62: /* 22nm IvyBridge-EP/EX */
3213
		x86_add_quirk(intel_ht_bug);
3214 3215
		memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
		       sizeof(hw_cache_event_ids));
3216 3217 3218
		/* dTLB-load-misses on IVB is different than SNB */
		hw_cache_event_ids[C(DTLB)][C(OP_READ)][C(RESULT_MISS)] = 0x8108; /* DTLB_LOAD_MISSES.DEMAND_LD_MISS_CAUSES_A_WALK */

3219 3220 3221 3222 3223
		memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
		       sizeof(hw_cache_extra_regs));

		intel_pmu_lbr_init_snb();

3224
		x86_pmu.event_constraints = intel_ivb_event_constraints;
3225 3226
		x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
		x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3227 3228 3229 3230
		if (boot_cpu_data.x86_model == 62)
			x86_pmu.extra_regs = intel_snbep_extra_regs;
		else
			x86_pmu.extra_regs = intel_snb_extra_regs;
3231
		/* all extra regs are per-cpu when HT is on */
3232 3233
		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3234

3235 3236
		x86_pmu.cpu_events = snb_events_attrs;

3237 3238 3239 3240 3241 3242 3243
		/* UOPS_ISSUED.ANY,c=1,i=1 to count stall cycles */
		intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =
			X86_CONFIG(.event=0x0e, .umask=0x01, .inv=1, .cmask=1);

		pr_cont("IvyBridge events, ");
		break;

3244

3245 3246 3247 3248
	case 60: /* 22nm Haswell Core */
	case 63: /* 22nm Haswell Server */
	case 69: /* 22nm Haswell ULT */
	case 70: /* 22nm Haswell + GT3e (Intel Iris Pro graphics) */
3249
		x86_add_quirk(intel_ht_bug);
3250
		x86_pmu.late_ack = true;
3251 3252
		memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
		memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
3253

3254
		intel_pmu_lbr_init_hsw();
3255 3256

		x86_pmu.event_constraints = intel_hsw_event_constraints;
3257
		x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
3258
		x86_pmu.extra_regs = intel_snbep_extra_regs;
3259
		x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
3260
		/* all extra regs are per-cpu when HT is on */
3261 3262
		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3263 3264 3265

		x86_pmu.hw_config = hsw_hw_config;
		x86_pmu.get_event_constraints = hsw_get_event_constraints;
3266
		x86_pmu.cpu_events = hsw_events_attrs;
3267
		x86_pmu.lbr_double_abort = true;
3268 3269 3270
		pr_cont("Haswell events, ");
		break;

3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286
	case 61: /* 14nm Broadwell Core-M */
	case 86: /* 14nm Broadwell Xeon D */
		x86_pmu.late_ack = true;
		memcpy(hw_cache_event_ids, hsw_hw_cache_event_ids, sizeof(hw_cache_event_ids));
		memcpy(hw_cache_extra_regs, hsw_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));

		/* L3_MISS_LOCAL_DRAM is BIT(26) in Broadwell */
		hw_cache_extra_regs[C(LL)][C(OP_READ)][C(RESULT_MISS)] = HSW_DEMAND_READ |
									 BDW_L3_MISS|HSW_SNOOP_DRAM;
		hw_cache_extra_regs[C(LL)][C(OP_WRITE)][C(RESULT_MISS)] = HSW_DEMAND_WRITE|BDW_L3_MISS|
									  HSW_SNOOP_DRAM;
		hw_cache_extra_regs[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = HSW_DEMAND_READ|
									     BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;
		hw_cache_extra_regs[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = HSW_DEMAND_WRITE|
									      BDW_L3_MISS_LOCAL|HSW_SNOOP_DRAM;

3287
		intel_pmu_lbr_init_hsw();
3288 3289 3290 3291 3292 3293

		x86_pmu.event_constraints = intel_bdw_event_constraints;
		x86_pmu.pebs_constraints = intel_hsw_pebs_event_constraints;
		x86_pmu.extra_regs = intel_snbep_extra_regs;
		x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
		/* all extra regs are per-cpu when HT is on */
3294 3295
		x86_pmu.flags |= PMU_FL_HAS_RSP_1;
		x86_pmu.flags |= PMU_FL_NO_HT_SHARING;
3296 3297 3298 3299

		x86_pmu.hw_config = hsw_hw_config;
		x86_pmu.get_event_constraints = hsw_get_event_constraints;
		x86_pmu.cpu_events = hsw_events_attrs;
3300
		x86_pmu.limit_period = bdw_limit_period;
3301 3302 3303
		pr_cont("Broadwell events, ");
		break;

3304
	default:
3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317
		switch (x86_pmu.version) {
		case 1:
			x86_pmu.event_constraints = intel_v1_event_constraints;
			pr_cont("generic architected perfmon v1, ");
			break;
		default:
			/*
			 * default constraints for v2 and up
			 */
			x86_pmu.event_constraints = intel_gen_event_constraints;
			pr_cont("generic architected perfmon, ");
			break;
		}
3318
	}
3319

3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341
	if (x86_pmu.num_counters > INTEL_PMC_MAX_GENERIC) {
		WARN(1, KERN_ERR "hw perf events %d > max(%d), clipping!",
		     x86_pmu.num_counters, INTEL_PMC_MAX_GENERIC);
		x86_pmu.num_counters = INTEL_PMC_MAX_GENERIC;
	}
	x86_pmu.intel_ctrl = (1 << x86_pmu.num_counters) - 1;

	if (x86_pmu.num_counters_fixed > INTEL_PMC_MAX_FIXED) {
		WARN(1, KERN_ERR "hw perf events fixed %d > max(%d), clipping!",
		     x86_pmu.num_counters_fixed, INTEL_PMC_MAX_FIXED);
		x86_pmu.num_counters_fixed = INTEL_PMC_MAX_FIXED;
	}

	x86_pmu.intel_ctrl |=
		((1LL << x86_pmu.num_counters_fixed)-1) << INTEL_PMC_IDX_FIXED;

	if (x86_pmu.event_constraints) {
		/*
		 * event on fixed counter2 (REF_CYCLES) only works on this
		 * counter, so do not extend mask to generic counters
		 */
		for_each_event_constraint(c, x86_pmu.event_constraints) {
3342
			if (c->cmask != FIXED_EVENT_FLAGS
3343 3344 3345 3346 3347 3348 3349 3350 3351
			    || c->idxmsk64 == INTEL_PMC_MSK_FIXED_REF_CYCLES) {
				continue;
			}

			c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
			c->weight += x86_pmu.num_counters;
		}
	}

3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379
	/*
	 * Access LBR MSR may cause #GP under certain circumstances.
	 * E.g. KVM doesn't support LBR MSR
	 * Check all LBT MSR here.
	 * Disable LBR access if any LBR MSRs can not be accessed.
	 */
	if (x86_pmu.lbr_nr && !check_msr(x86_pmu.lbr_tos, 0x3UL))
		x86_pmu.lbr_nr = 0;
	for (i = 0; i < x86_pmu.lbr_nr; i++) {
		if (!(check_msr(x86_pmu.lbr_from + i, 0xffffUL) &&
		      check_msr(x86_pmu.lbr_to + i, 0xffffUL)))
			x86_pmu.lbr_nr = 0;
	}

	/*
	 * Access extra MSR may cause #GP under certain circumstances.
	 * E.g. KVM doesn't support offcore event
	 * Check all extra_regs here.
	 */
	if (x86_pmu.extra_regs) {
		for (er = x86_pmu.extra_regs; er->msr; er++) {
			er->extra_msr_access = check_msr(er->msr, 0x1ffUL);
			/* Disable LBR select mapping */
			if ((er->idx == EXTRA_REG_LBR) && !er->extra_msr_access)
				x86_pmu.lbr_sel_map = NULL;
		}
	}

3380 3381 3382 3383 3384 3385 3386
	/* Support full width counters using alternative MSR range */
	if (x86_pmu.intel_cap.full_width_write) {
		x86_pmu.max_period = x86_pmu.cntval_mask;
		x86_pmu.perfctr = MSR_IA32_PMC0;
		pr_cont("full-width counters, ");
	}

3387 3388
	return 0;
}
3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432

/*
 * HT bug: phase 2 init
 * Called once we have valid topology information to check
 * whether or not HT is enabled
 * If HT is off, then we disable the workaround
 */
static __init int fixup_ht_bug(void)
{
	int cpu = smp_processor_id();
	int w, c;
	/*
	 * problem not present on this CPU model, nothing to do
	 */
	if (!(x86_pmu.flags & PMU_FL_EXCL_ENABLED))
		return 0;

	w = cpumask_weight(topology_thread_cpumask(cpu));
	if (w > 1) {
		pr_info("PMU erratum BJ122, BV98, HSD29 worked around, HT is on\n");
		return 0;
	}

	watchdog_nmi_disable_all();

	x86_pmu.flags &= ~(PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED);

	x86_pmu.commit_scheduling = NULL;
	x86_pmu.start_scheduling = NULL;
	x86_pmu.stop_scheduling = NULL;

	watchdog_nmi_enable_all();

	get_online_cpus();

	for_each_online_cpu(c) {
		free_excl_cntrs(c);
	}

	put_online_cpus();
	pr_info("PMU erratum BJ122, BV98, HSD29 workaround disabled, HT off\n");
	return 0;
}
subsys_initcall(fixup_ht_bug)