/*
 * Per core/cpu state
 *
 * Used to coordinate shared registers between HT threads or
 * among events on a single PMU.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/nmi.h>

#include <asm/cpufeature.h>
#include <asm/hardirq.h>
#include <asm/apic.h>

#include "../perf_event.h"

/*
 * Intel PerfMon, used on Core and later.
 */
static u64 intel_perfmon_event_map[PERF_COUNT_HW_MAX] __read_mostly =
{
        [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 */
};

static struct event_constraint intel_core_event_constraints[] __read_mostly =
{
        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
};

static struct event_constraint intel_core2_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_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 */
        INTEL_EVENT_CONSTRAINT(0xc9, 0x1), /* ITLB_MISS_RETIRED (T30-9) */
        INTEL_EVENT_CONSTRAINT(0xcb, 0x1), /* MEM_LOAD_RETIRED */
        EVENT_CONSTRAINT_END
};

static struct event_constraint intel_nehalem_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_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
};

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

static struct event_constraint intel_westmere_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_EVENT_CONSTRAINT(0x51, 0x3), /* L1D */
        INTEL_EVENT_CONSTRAINT(0x60, 0x1), /* OFFCORE_REQUESTS_OUTSTANDING */
        INTEL_EVENT_CONSTRAINT(0x63, 0x3), /* CACHE_LOCK_CYCLES */
        INTEL_EVENT_CONSTRAINT(0xb3, 0x1), /* SNOOPQ_REQUEST_OUTSTANDING */
        EVENT_CONSTRAINT_END
};

static struct event_constraint intel_snb_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(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 */
        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 */
        INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
        INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */

        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.* */

        EVENT_CONSTRAINT_END
};

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 */
        INTEL_UEVENT_CONSTRAINT(0x02a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_LDM_PENDING */
        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 */

        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.* */

        EVENT_CONSTRAINT_END
};

static struct extra_reg intel_westmere_extra_regs[] __read_mostly =
{
        /* 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),
        INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x100b),
        EVENT_EXTRA_END
};

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

static struct event_constraint intel_gen_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 */
        EVENT_CONSTRAINT_END
};

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
};

struct event_constraint intel_skl_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(0x1c0, 0x2),    /* INST_RETIRED.PREC_DIST */
        EVENT_CONSTRAINT_END
};

static struct extra_reg intel_knl_extra_regs[] __read_mostly = {
        INTEL_UEVENT_EXTRA_REG(0x01b7,
                               MSR_OFFCORE_RSP_0, 0x7f9ffbffffull, RSP_0),
        INTEL_UEVENT_EXTRA_REG(0x02b7,
                               MSR_OFFCORE_RSP_1, 0x3f9ffbffffull, RSP_1),
        EVENT_EXTRA_END
};

static struct extra_reg intel_snb_extra_regs[] __read_mostly = {
        /* 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),
        INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
        EVENT_EXTRA_END
};

static struct extra_reg intel_snbep_extra_regs[] __read_mostly = {
        /* 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),
        INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
        EVENT_EXTRA_END
};

static struct extra_reg intel_skl_extra_regs[] __read_mostly = {
        INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x3fffff8fffull, RSP_0),
        INTEL_UEVENT_EXTRA_REG(0x01bb, MSR_OFFCORE_RSP_1, 0x3fffff8fffull, RSP_1),
        INTEL_UEVENT_PEBS_LDLAT_EXTRA_REG(0x01cd),
        /*
         * Note the low 8 bits eventsel code is not a continuous field, containing
         * some #GPing bits. These are masked out.
         */
        INTEL_UEVENT_EXTRA_REG(0x01c6, MSR_PEBS_FRONTEND, 0x7fff17, FE),
        EVENT_EXTRA_END
};

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");

struct attribute *nhm_events_attrs[] = {
        EVENT_PTR(mem_ld_nhm),
        NULL,
};

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

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_UEVENT_CONSTRAINT(0x148, 0x4),    /* L1D_PEND_MISS.PENDING */
        INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
        INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
        /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
        INTEL_UEVENT_CONSTRAINT(0x08a3, 0x4),
        /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
        INTEL_UEVENT_CONSTRAINT(0x0ca3, 0x4),
        /* CYCLE_ACTIVITY.CYCLES_NO_EXECUTE */
        INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf),

        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.* */

        EVENT_CONSTRAINT_END
};

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_UBIT_EVENT_CONSTRAINT(0x8a3, 0x4),        /* CYCLE_ACTIVITY.CYCLES_L1D_MISS */
        EVENT_CONSTRAINT_END
};

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

/*
 * 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.
 * - icache miss does not include decoded icache
 */

#define SKL_DEMAND_DATA_RD              BIT_ULL(0)
#define SKL_DEMAND_RFO                  BIT_ULL(1)
#define SKL_ANY_RESPONSE                BIT_ULL(16)
#define SKL_SUPPLIER_NONE               BIT_ULL(17)
#define SKL_L3_MISS_LOCAL_DRAM          BIT_ULL(26)
#define SKL_L3_MISS_REMOTE_HOP0_DRAM    BIT_ULL(27)
#define SKL_L3_MISS_REMOTE_HOP1_DRAM    BIT_ULL(28)
#define SKL_L3_MISS_REMOTE_HOP2P_DRAM   BIT_ULL(29)
#define SKL_L3_MISS                     (SKL_L3_MISS_LOCAL_DRAM| \
                                         SKL_L3_MISS_REMOTE_HOP0_DRAM| \
                                         SKL_L3_MISS_REMOTE_HOP1_DRAM| \
                                         SKL_L3_MISS_REMOTE_HOP2P_DRAM)
#define SKL_SPL_HIT                     BIT_ULL(30)
#define SKL_SNOOP_NONE                  BIT_ULL(31)
#define SKL_SNOOP_NOT_NEEDED            BIT_ULL(32)
#define SKL_SNOOP_MISS                  BIT_ULL(33)
#define SKL_SNOOP_HIT_NO_FWD            BIT_ULL(34)
#define SKL_SNOOP_HIT_WITH_FWD          BIT_ULL(35)
#define SKL_SNOOP_HITM                  BIT_ULL(36)
#define SKL_SNOOP_NON_DRAM              BIT_ULL(37)
#define SKL_ANY_SNOOP                   (SKL_SPL_HIT|SKL_SNOOP_NONE| \
                                         SKL_SNOOP_NOT_NEEDED|SKL_SNOOP_MISS| \
                                         SKL_SNOOP_HIT_NO_FWD|SKL_SNOOP_HIT_WITH_FWD| \
                                         SKL_SNOOP_HITM|SKL_SNOOP_NON_DRAM)
#define SKL_DEMAND_READ                 SKL_DEMAND_DATA_RD
#define SKL_SNOOP_DRAM                  (SKL_SNOOP_NONE| \
                                         SKL_SNOOP_NOT_NEEDED|SKL_SNOOP_MISS| \
                                         SKL_SNOOP_HIT_NO_FWD|SKL_SNOOP_HIT_WITH_FWD| \
                                         SKL_SNOOP_HITM|SKL_SPL_HIT)
#define SKL_DEMAND_WRITE                SKL_DEMAND_RFO
#define SKL_LLC_ACCESS                  SKL_ANY_RESPONSE
#define SKL_L3_MISS_REMOTE              (SKL_L3_MISS_REMOTE_HOP0_DRAM| \
                                         SKL_L3_MISS_REMOTE_HOP1_DRAM| \
                                         SKL_L3_MISS_REMOTE_HOP2P_DRAM)

static __initconst const u64 skl_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_INST_RETIRED.ALL_LOADS */
                [ C(RESULT_MISS)   ] = 0x151,   /* L1D.REPLACEMENT */
        },
        [ C(OP_WRITE) ] = {
                [ C(RESULT_ACCESS) ] = 0x82d0,  /* MEM_INST_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)   ] = 0x283,   /* ICACHE_64B.MISS */
        },
        [ 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_INST_RETIRED.ALL_LOADS */
                [ C(RESULT_MISS)   ] = 0x608,   /* DTLB_LOAD_MISSES.WALK_COMPLETED */
        },
        [ C(OP_WRITE) ] = {
                [ C(RESULT_ACCESS) ] = 0x82d0,  /* MEM_INST_RETIRED.ALL_STORES */
                [ C(RESULT_MISS)   ] = 0x649,   /* DTLB_STORE_MISSES.WALK_COMPLETED */
        },
        [ C(OP_PREFETCH) ] = {
                [ C(RESULT_ACCESS) ] = 0x0,
                [ C(RESULT_MISS)   ] = 0x0,
        },
 },
 [ C(ITLB) ] = {
        [ C(OP_READ) ] = {
                [ C(RESULT_ACCESS) ] = 0x2085,  /* ITLB_MISSES.STLB_HIT */
                [ C(RESULT_MISS)   ] = 0xe85,   /* ITLB_MISSES.WALK_COMPLETED */
        },
        [ 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 skl_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) ] = SKL_DEMAND_READ|
                                       SKL_LLC_ACCESS|SKL_ANY_SNOOP,
                [ C(RESULT_MISS)   ] = SKL_DEMAND_READ|
                                       SKL_L3_MISS|SKL_ANY_SNOOP|
                                       SKL_SUPPLIER_NONE,
        },
        [ C(OP_WRITE) ] = {
                [ C(RESULT_ACCESS) ] = SKL_DEMAND_WRITE|
                                       SKL_LLC_ACCESS|SKL_ANY_SNOOP,
                [ C(RESULT_MISS)   ] = SKL_DEMAND_WRITE|
                                       SKL_L3_MISS|SKL_ANY_SNOOP|
                                       SKL_SUPPLIER_NONE,
        },
        [ C(OP_PREFETCH) ] = {
                [ C(RESULT_ACCESS) ] = 0x0,
                [ C(RESULT_MISS)   ] = 0x0,
        },
 },
 [ C(NODE) ] = {
        [ C(OP_READ) ] = {
                [ C(RESULT_ACCESS) ] = SKL_DEMAND_READ|
                                       SKL_L3_MISS_LOCAL_DRAM|SKL_SNOOP_DRAM,
                [ C(RESULT_MISS)   ] = SKL_DEMAND_READ|
                                       SKL_L3_MISS_REMOTE|SKL_SNOOP_DRAM,
        },
        [ C(OP_WRITE) ] = {
                [ C(RESULT_ACCESS) ] = SKL_DEMAND_WRITE|
                                       SKL_L3_MISS_LOCAL_DRAM|SKL_SNOOP_DRAM,
                [ C(RESULT_MISS)   ] = SKL_DEMAND_WRITE|
                                       SKL_L3_MISS_REMOTE|SKL_SNOOP_DRAM,
        },
        [ C(OP_PREFETCH) ] = {
                [ C(RESULT_ACCESS) ] = 0x0,
                [ C(RESULT_MISS)   ] = 0x0,
        },
 },
};

#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,
        },
 },
};

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) ] = {
                /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
                [ C(RESULT_ACCESS) ] = 0x01b7,
                /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
                [ C(RESULT_MISS)   ] = 0x01b7,
        },
        [ 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) ] = 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,
        },
 },
 [ 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,
        },
 },

};

/*
 * 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

#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)


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,
        },
 },
};

static __initconst const u64 westmere_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) ] = 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) ] = {
                /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
                [ C(RESULT_ACCESS) ] = 0x01b7,
                /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
                [ C(RESULT_MISS)   ] = 0x01b7,
        },
        /*
         * Use RFO, not WRITEBACK, because a write miss would typically occur
         * on RFO.
         */
        [ 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) ] = 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,
        },
 },
 [ 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,
        },
 },
};

/*
 * Nehalem/Westmere MSR_OFFCORE_RESPONSE bits;
 * See IA32 SDM Vol 3B 30.6.1.3
 */

#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)

#define NHM_LOCAL               (NHM_LOCAL_DRAM|NHM_REMOTE_CACHE_FWD)
#define NHM_REMOTE              (NHM_REMOTE_DRAM)

#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)
#define NHM_L3_MISS     (NHM_NON_DRAM|NHM_LOCAL_DRAM|NHM_REMOTE_DRAM|NHM_REMOTE_CACHE_FWD)

#define NHM_L3_ACCESS   (NHM_L3_HIT|NHM_L3_MISS)

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) ] = {
                [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_L3_ACCESS,
                [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_L3_MISS,
        },
        [ C(OP_WRITE) ] = {
                [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_L3_ACCESS,
                [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_L3_MISS,
        },
        [ C(OP_PREFETCH) ] = {
                [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_L3_ACCESS,
                [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_L3_MISS,
        },
 },
 [ C(NODE) ] = {
        [ C(OP_READ) ] = {
                [ C(RESULT_ACCESS) ] = NHM_DMND_READ|NHM_LOCAL|NHM_REMOTE,
                [ C(RESULT_MISS)   ] = NHM_DMND_READ|NHM_REMOTE,
        },
        [ C(OP_WRITE) ] = {
                [ C(RESULT_ACCESS) ] = NHM_DMND_WRITE|NHM_LOCAL|NHM_REMOTE,
                [ C(RESULT_MISS)   ] = NHM_DMND_WRITE|NHM_REMOTE,
        },
        [ C(OP_PREFETCH) ] = {
                [ C(RESULT_ACCESS) ] = NHM_DMND_PREFETCH|NHM_LOCAL|NHM_REMOTE,
                [ C(RESULT_MISS)   ] = NHM_DMND_PREFETCH|NHM_REMOTE,
        },
 },
};

static __initconst const u64 nehalem_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) ] = 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) ] = {
                /* OFFCORE_RESPONSE.ANY_DATA.LOCAL_CACHE */
                [ C(RESULT_ACCESS) ] = 0x01b7,
                /* OFFCORE_RESPONSE.ANY_DATA.ANY_LLC_MISS */
                [ C(RESULT_MISS)   ] = 0x01b7,
        },
        /*
         * Use RFO, not WRITEBACK, because a write miss would typically occur
         * on RFO.
         */
        [ 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) ] = 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,
        },
 },
 [ 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,
        },
 },
};

static __initconst const u64 core2_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) ] = 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,
        },
 },
};

static __initconst const u64 atom_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) ] = 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,
        },
 },
};

static struct extra_reg intel_slm_extra_regs[] __read_mostly =
{
        /* must define OFFCORE_RSP_X first, see intel_fixup_er() */
        INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x768005ffffull, RSP_0),
        INTEL_UEVENT_EXTRA_REG(0x02b7, MSR_OFFCORE_RSP_1, 0x368005ffffull, RSP_1),
        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,
                [ C(RESULT_MISS)   ] = 0,
        },
        [ 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,
                [ C(RESULT_MISS)   ] = 0,
        },
        [ 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 */
                [ C(RESULT_MISS)   ] = 0x40205, /* PAGE_WALKS.I_SIDE_WALKS */
        },
        [ 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,
        },
 },
};

#define KNL_OT_L2_HITE          BIT_ULL(19) /* Other Tile L2 Hit */
#define KNL_OT_L2_HITF          BIT_ULL(20) /* Other Tile L2 Hit */
#define KNL_MCDRAM_LOCAL        BIT_ULL(21)
#define KNL_MCDRAM_FAR          BIT_ULL(22)
#define KNL_DDR_LOCAL           BIT_ULL(23)
#define KNL_DDR_FAR             BIT_ULL(24)
#define KNL_DRAM_ANY            (KNL_MCDRAM_LOCAL | KNL_MCDRAM_FAR | \
                                    KNL_DDR_LOCAL | KNL_DDR_FAR)
#define KNL_L2_READ             SLM_DMND_READ
#define KNL_L2_WRITE            SLM_DMND_WRITE
#define KNL_L2_PREFETCH         SLM_DMND_PREFETCH
#define KNL_L2_ACCESS           SLM_LLC_ACCESS
#define KNL_L2_MISS             (KNL_OT_L2_HITE | KNL_OT_L2_HITF | \
                                   KNL_DRAM_ANY | SNB_SNP_ANY | \
                                                  SNB_NON_DRAM)

static __initconst const u64 knl_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)] = KNL_L2_READ | KNL_L2_ACCESS,
                        [C(RESULT_MISS)]   = 0,
                },
                [C(OP_WRITE)] = {
                        [C(RESULT_ACCESS)] = KNL_L2_WRITE | KNL_L2_ACCESS,
                        [C(RESULT_MISS)]   = KNL_L2_WRITE | KNL_L2_MISS,
                },
                [C(OP_PREFETCH)] = {
                        [C(RESULT_ACCESS)] = KNL_L2_PREFETCH | KNL_L2_ACCESS,
                        [C(RESULT_MISS)]   = KNL_L2_PREFETCH | KNL_L2_MISS,
                },
        },
};

/*
 * Used from PMIs where the LBRs are already disabled.
 *
 * This function could be called consecutively. It is required to remain in
 * disabled state if called consecutively.
 *
 * During consecutive calls, the same disable value will be written to related
 * registers, so the PMU state remains unchanged. hw.state in
 * intel_bts_disable_local will remain PERF_HES_STOPPED too in consecutive
 * calls.
 */
static void __intel_pmu_disable_all(void)
{
        struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);

        wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL, 0);

        if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask))
                intel_pmu_disable_bts();
        else
                intel_bts_disable_local();

        intel_pmu_pebs_disable_all();
}

static void intel_pmu_disable_all(void)
{
        __intel_pmu_disable_all();
        intel_pmu_lbr_disable_all();
}

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

        intel_pmu_pebs_enable_all();
        intel_pmu_lbr_enable_all(pmi);
        wrmsrl(MSR_CORE_PERF_GLOBAL_CTRL,
                        x86_pmu.intel_ctrl & ~cpuc->intel_ctrl_guest_mask);

        if (test_bit(INTEL_PMC_IDX_FIXED_BTS, cpuc->active_mask)) {
                struct perf_event *event =
                        cpuc->events[INTEL_PMC_IDX_FIXED_BTS];

                if (WARN_ON_ONCE(!event))
                        return;

                intel_pmu_enable_bts(event->hw.config);
        } else
                intel_bts_enable_local();
}

static void intel_pmu_enable_all(int added)
{
        __intel_pmu_enable_all(added, false);
}

/*
 * Workaround for:
 *   Intel Errata AAK100 (model 26)
 *   Intel Errata AAP53  (model 30)
 *   Intel Errata BD53   (model 44)
 *
 * 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.
 */
static void intel_pmu_nhm_workaround(void)
{
        struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        static const unsigned long nhm_magic[4] = {
                0x4300B5,
                0x4300D2,
                0x4300B1,
                0x4300B1
        };
        struct perf_event *event;
        int i;

        /*
         * 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;
         */

        /*
         * 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;
         */

        /* 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);
        }

        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);

        for (i = 0; i < 4; i++) {
                event = cpuc->events[i];

                if (event) {
                        x86_perf_event_set_period(event);
                        __x86_pmu_enable_event(&event->hw,
                                        ARCH_PERFMON_EVENTSEL_ENABLE);
                } else
                        wrmsrl(MSR_ARCH_PERFMON_EVENTSEL0 + i, 0x0);
        }
}

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

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);
}

static void intel_pmu_disable_fixed(struct hw_perf_event *hwc)
{
        int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
        u64 ctrl_val, mask;

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

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

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

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

        if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
                intel_pmu_disable_bts();
                intel_pmu_drain_bts_buffer();
                return;
        }

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

        /*
         * must disable before any actual event
         * because any event may be combined with LBR
         */
        if (needs_branch_stack(event))
                intel_pmu_lbr_disable(event);

        if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
                intel_pmu_disable_fixed(hwc);
                return;
        }

        x86_pmu_disable_event(event);

        if (unlikely(event->attr.precise_ip))
                intel_pmu_pebs_disable(event);
}

static void intel_pmu_enable_fixed(struct hw_perf_event *hwc)
{
        int idx = hwc->idx - INTEL_PMC_IDX_FIXED;
        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;
        wrmsrl(hwc->config_base, ctrl_val);
}

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

        if (unlikely(hwc->idx == INTEL_PMC_IDX_FIXED_BTS)) {
                if (!__this_cpu_read(cpu_hw_events.enabled))
                        return;

                intel_pmu_enable_bts(hwc->config);
                return;
        }
        /*
         * must enabled before any actual event
         * because any event may be combined with LBR
         */
        if (needs_branch_stack(event))
                intel_pmu_lbr_enable(event);

        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);

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

        if (unlikely(hwc->config_base == MSR_ARCH_PERFMON_FIXED_CTR_CTRL)) {
                intel_pmu_enable_fixed(hwc);
                return;
        }

        if (unlikely(event->attr.precise_ip))
                intel_pmu_pebs_enable(event);

        __x86_pmu_enable_event(hwc, ARCH_PERFMON_EVENTSEL_ENABLE);
}

/*
 * Save and restart an expired event. Called by NMI contexts,
 * so it has to be careful about preempting normal event ops:
 */
int intel_pmu_save_and_restart(struct perf_event *event)
{
        x86_perf_event_update(event);
        /*
         * 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);
        }
        return x86_perf_event_set_period(event);
}

static void intel_pmu_reset(void)
{
        struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds);
        unsigned long flags;
        int idx;

        if (!x86_pmu.num_counters)
                return;

        local_irq_save(flags);

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

        for (idx = 0; idx < x86_pmu.num_counters; idx++) {
                wrmsrl_safe(x86_pmu_config_addr(idx), 0ull);
                wrmsrl_safe(x86_pmu_event_addr(idx),  0ull);
        }
        for (idx = 0; idx < x86_pmu.num_counters_fixed; idx++)
                wrmsrl_safe(MSR_ARCH_PERFMON_FIXED_CTR0 + idx, 0ull);

        if (ds)
                ds->bts_index = ds->bts_buffer_base;

        /* 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));
        }

        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;
        u64 status;
        int handled;

        cpuc = this_cpu_ptr(&cpu_hw_events);

        /*
         * No known reason to not always do late ACK,
         * but just in case do it opt-in.
         */
        if (!x86_pmu.late_ack)
                apic_write(APIC_LVTPC, APIC_DM_NMI);
        __intel_pmu_disable_all();
        handled = intel_pmu_drain_bts_buffer();
        handled += intel_bts_interrupt();
        status = intel_pmu_get_status();
        if (!status)
                goto done;

        loops = 0;
again:
        intel_pmu_lbr_read();
        intel_pmu_ack_status(status);
        if (++loops > 100) {
                static bool warned = false;
                if (!warned) {
                        WARN(1, "perfevents: irq loop stuck!\n");
                        perf_event_print_debug();
                        warned = true;
                }
                intel_pmu_reset();
                goto done;
        }

        inc_irq_stat(apic_perf_irqs);


        /*
         * Ignore a range of extra bits in status that do not indicate
         * overflow by themselves.
         */
        status &= ~(GLOBAL_STATUS_COND_CHG |
                    GLOBAL_STATUS_ASIF |
                    GLOBAL_STATUS_LBRS_FROZEN);
        if (!status)
                goto done;

        /*
         * PEBS overflow sets bit 62 in the global status register
         */
        if (__test_and_clear_bit(62, (unsigned long *)&status)) {
                handled++;
                x86_pmu.drain_pebs(regs);
                /*
                 * There are cases where, even though, the PEBS ovfl bit is set
                 * in GLOBAL_OVF_STATUS, the PEBS events may also have their
                 * overflow bits set for their counters. We must clear them
                 * here because they have been processed as exact samples in
                 * the drain_pebs() routine. They must not be processed again
                 * in the for_each_bit_set() loop for regular samples below.
                 */
                status &= ~cpuc->pebs_enabled;
                status &= x86_pmu.intel_ctrl | GLOBAL_STATUS_TRACE_TOPAPMI;
        }

        /*
         * Intel PT
         */
        if (__test_and_clear_bit(55, (unsigned long *)&status)) {
                handled++;
                intel_pt_interrupt();
        }

        /*
         * 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.
         */
        status |= cpuc->intel_cp_status;

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

                handled++;

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

                if (!intel_pmu_save_and_restart(event))
                        continue;

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

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

                if (perf_event_overflow(event, &data, regs))
                        x86_pmu_stop(event, 0);
        }

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

done:
        /* Only restore PMU state when it's active. See x86_pmu_disable(). */
        if (cpuc->enabled)
                __intel_pmu_enable_all(0, true);

        /*
         * 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);
        return handled;
}

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

        if (event->attr.freq)
                return NULL;

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

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

        return NULL;
}

static int intel_alt_er(int idx, u64 config)
{
        int alt_idx = idx;

        if (!(x86_pmu.flags & PMU_FL_HAS_RSP_1))
                return idx;

        if (idx == EXTRA_REG_RSP_0)
                alt_idx = EXTRA_REG_RSP_1;

        if (idx == EXTRA_REG_RSP_1)
                alt_idx = EXTRA_REG_RSP_0;

        if (config & ~x86_pmu.extra_regs[alt_idx].valid_mask)
                return idx;

        return alt_idx;
}

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

        if (idx == EXTRA_REG_RSP_0) {
                event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
                event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_0].event;
                event->hw.extra_reg.reg = MSR_OFFCORE_RSP_0;
        } else if (idx == EXTRA_REG_RSP_1) {
                event->hw.config &= ~INTEL_ARCH_EVENT_MASK;
                event->hw.config |= x86_pmu.extra_regs[EXTRA_REG_RSP_1].event;
                event->hw.extra_reg.reg = MSR_OFFCORE_RSP_1;
        }
}

/*
 * 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
 */
static struct event_constraint *
__intel_shared_reg_get_constraints(struct cpu_hw_events *cpuc,
                                   struct perf_event *event,
                                   struct hw_perf_event_extra *reg)
{
        struct event_constraint *c = &emptyconstraint;
        struct er_account *era;
        unsigned long flags;
        int idx = reg->idx;

        /*
         * 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)
                return NULL; /* call x86_get_event_constraint() */

again:
        era = &cpuc->shared_regs->regs[idx];
        /*
         * we use spin_lock_irqsave() to avoid lockdep issues when
         * passing a fake cpuc
         */
        raw_spin_lock_irqsave(&era->lock, flags);

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

                /*
                 * 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;
                }

                /* lock in msr value */
                era->config = reg->config;
                era->reg = reg->reg;

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

                /*
                 * need to call x86_get_event_constraint()
                 * to check if associated event has constraints
                 */
                c = NULL;
        } else {
                idx = intel_alt_er(idx, reg->config);
                if (idx != reg->idx) {
                        raw_spin_unlock_irqrestore(&era->lock, flags);
                        goto again;
                }
        }
        raw_spin_unlock_irqrestore(&era->lock, flags);

        return c;
}

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

        /*
         * 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.
         */
        if (!reg->alloc || cpuc->is_fake)
                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)
{
        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;
                }
        }
        return c;
}

struct event_constraint *
x86_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
                          struct perf_event *event)
{
        struct event_constraint *c;

        if (x86_pmu.event_constraints) {
                for_each_event_constraint(c, x86_pmu.event_constraints) {
                        if ((event->hw.config & c->cmask) == c->code) {
                                event->hw.flags |= c->flags;
                                return c;
                        }
                }
        }

        return &unconstrained;
}

static struct event_constraint *
__intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
                            struct perf_event *event)
{
        struct event_constraint *c;

        c = intel_bts_constraints(event);
        if (c)
                return c;

        c = intel_shared_regs_constraints(cpuc, event);
        if (c)
                return c;

        c = intel_pebs_constraints(event);
        if (c)
                return c;

        return x86_get_event_constraints(cpuc, idx, event);
}

static void
intel_start_scheduling(struct cpu_hw_events *cpuc)
{
        struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
        struct intel_excl_states *xl;
        int tid = cpuc->excl_thread_id;

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

        /*
         * no exclusion needed
         */
        if (WARN_ON_ONCE(!excl_cntrs))
                return;

        xl = &excl_cntrs->states[tid];

        xl->sched_started = true;
        /*
         * lock shared state until we are done scheduling
         * in stop_event_scheduling()
         * makes scheduling appear as a transaction
         */
        raw_spin_lock(&excl_cntrs->lock);
}

static void intel_commit_scheduling(struct cpu_hw_events *cpuc, int idx, int cntr)
{
        struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
        struct event_constraint *c = cpuc->event_constraint[idx];
        struct intel_excl_states *xl;
        int tid = cpuc->excl_thread_id;

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

        if (WARN_ON_ONCE(!excl_cntrs))
                return;

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

        xl = &excl_cntrs->states[tid];

        lockdep_assert_held(&excl_cntrs->lock);

        if (c->flags & PERF_X86_EVENT_EXCL)
                xl->state[cntr] = INTEL_EXCL_EXCLUSIVE;
        else
                xl->state[cntr] = INTEL_EXCL_SHARED;
}

static void
intel_stop_scheduling(struct cpu_hw_events *cpuc)
{
        struct intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
        struct intel_excl_states *xl;
        int tid = cpuc->excl_thread_id;

        /*
         * nothing needed if in group validation mode
         */
        if (cpuc->is_fake || !is_ht_workaround_enabled())
                return;
        /*
         * no exclusion needed
         */
        if (WARN_ON_ONCE(!excl_cntrs))
                return;

        xl = &excl_cntrs->states[tid];

        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 intel_excl_cntrs *excl_cntrs = cpuc->excl_cntrs;
        struct intel_excl_states *xlo;
        int tid = cpuc->excl_thread_id;
        int is_excl, i;

        /*
         * validating a group does not require
         * enforcing cross-thread  exclusion
         */
        if (cpuc->is_fake || !is_ht_workaround_enabled())
                return c;

        /*
         * no exclusion needed
         */
        if (WARN_ON_ONCE(!excl_cntrs))
                return 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)) {
                struct event_constraint *cx;

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

                /*
                 * initialize dynamic constraint
                 * with static constraint
                 */
                *cx = *c;

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

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

        /*
         * state of sibling HT
         */
        xlo = &excl_cntrs->states[tid ^ 1];

        /*
         * event requires exclusive counter access
         * across HT threads
         */
        is_excl = c->flags & PERF_X86_EVENT_EXCL;
        if (is_excl && !(event->hw.flags & PERF_X86_EVENT_EXCL_ACCT)) {
                event->hw.flags |= PERF_X86_EVENT_EXCL_ACCT;
                if (!cpuc->n_excl++)
                        WRITE_ONCE(excl_cntrs->has_exclusive[tid], 1);
        }

        /*
         * 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, c->idxmsk, X86_PMC_IDX_MAX) {
                /*
                 * exclusive event in sibling counter
                 * our corresponding counter cannot be used
                 * regardless of our event
                 */
                if (xlo->state[i] == INTEL_EXCL_EXCLUSIVE)
                        __clear_bit(i, c->idxmsk);
                /*
                 * if measuring an exclusive event, sibling
                 * measuring non-exclusive, then counter cannot
                 * be used
                 */
                if (is_excl && xlo->state[i] == INTEL_EXCL_SHARED)
                        __clear_bit(i, c->idxmsk);
        }

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

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

        return c;
}

static struct event_constraint *
intel_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
                            struct perf_event *event)
{
        struct event_constraint *c1 = NULL;
        struct event_constraint *c2;

        if (idx >= 0) /* fake does < 0 */
                c1 = cpuc->event_constraint[idx];

        /*
         * first time only
         * - static constraint: no change across incremental scheduling calls
         * - dynamic constraint: handled by intel_get_excl_constraints()
         */
        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;
        }

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

        return c2;
}

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;
        int tid = cpuc->excl_thread_id;
        struct intel_excl_states *xl;

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

        if (WARN_ON_ONCE(!excl_cntrs))
                return;

        if (hwc->flags & PERF_X86_EVENT_EXCL_ACCT) {
                hwc->flags &= ~PERF_X86_EVENT_EXCL_ACCT;
                if (!--cpuc->n_excl)
                        WRITE_ONCE(excl_cntrs->has_exclusive[tid], 0);
        }

        /*
         * If event was actually assigned, then mark the counter state as
         * unused now.
         */
        if (hwc->idx >= 0) {
                xl = &excl_cntrs->states[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(&excl_cntrs->lock);

                xl->state[hwc->idx] = INTEL_EXCL_UNUSED;

                if (!xl->sched_started)
                        raw_spin_unlock(&excl_cntrs->lock);
        }
}

static void
intel_put_shared_regs_event_constraints(struct cpu_hw_events *cpuc,
                                        struct perf_event *event)
{
        struct hw_perf_event_extra *reg;

        reg = &event->hw.extra_reg;
        if (reg->idx != EXTRA_REG_NONE)
                __intel_shared_reg_put_constraints(cpuc, reg);

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

static void intel_put_event_constraints(struct cpu_hw_events *cpuc,
                                        struct perf_event *event)
{
        intel_put_shared_regs_event_constraints(cpuc, event);

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

static void intel_pebs_aliases_core2(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 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.
                 */
                u64 alt_config = X86_CONFIG(.event=0xc0, .inv=1, .cmask=16);

                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);

                alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
                event->hw.config = alt_config;
        }
}

static void intel_pebs_aliases_precdist(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 INST_RETIRED.PREC_DIST
                 * (0x01c0), which is a PEBS capable event, to get the same
                 * count.
                 *
                 * The PREC_DIST event has special support to minimize sample
                 * shadowing effects. One drawback is that it can be
                 * only programmed on counter 1, but that seems like an
                 * acceptable trade off.
                 */
                u64 alt_config = X86_CONFIG(.event=0xc0, .umask=0x01, .inv=1, .cmask=16);

                alt_config |= (event->hw.config & ~X86_RAW_EVENT_MASK);
                event->hw.config = alt_config;
        }
}

static void intel_pebs_aliases_ivb(struct perf_event *event)
{
        if (event->attr.precise_ip < 3)
                return intel_pebs_aliases_snb(event);
        return intel_pebs_aliases_precdist(event);
}

static void intel_pebs_aliases_skl(struct perf_event *event)
{
        if (event->attr.precise_ip < 3)
                return intel_pebs_aliases_core2(event);
        return intel_pebs_aliases_precdist(event);
}

static unsigned long intel_pmu_free_running_flags(struct perf_event *event)
{
        unsigned long flags = x86_pmu.free_running_flags;

        if (event->attr.use_clockid)
                flags &= ~PERF_SAMPLE_TIME;
        return flags;
}

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) {
                if (!event->attr.freq) {
                        event->hw.flags |= PERF_X86_EVENT_AUTO_RELOAD;
                        if (!(event->attr.sample_type &
                              ~intel_pmu_free_running_flags(event)))
                                event->hw.flags |= PERF_X86_EVENT_FREERUNNING;
                }
                if (x86_pmu.pebs_aliases)
                        x86_pmu.pebs_aliases(event);
        }

        if (needs_branch_stack(event)) {
                ret = intel_pmu_setup_lbr_filter(event);
                if (ret)
                        return ret;

                /*
                 * 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;
                }
        }

        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;
}

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)
{
        struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        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;
        /*
         * 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;

        *nr = 2;
        return arr;
}

static struct perf_guest_switch_msr *core_guest_get_msrs(int *nr)
{
        struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        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)
{
        struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
        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);
        }
}

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;

        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;
        }
        return 0;
}

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

static struct event_constraint *
hsw_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
                          struct perf_event *event)
{
        struct event_constraint *c;

        c = intel_get_event_constraints(cpuc, idx, event);

        /* 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;
}

/*
 * 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;
}

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"  );
PMU_FORMAT_ATTR(in_tx,  "config:32");
PMU_FORMAT_ATTR(in_tx_cp, "config:33");

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,
};

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);
}

struct intel_shared_regs *allocate_shared_regs(int cpu)
{
        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;
}

static struct intel_excl_cntrs *allocate_excl_cntrs(int cpu)
{
        struct intel_excl_cntrs *c;

        c = kzalloc_node(sizeof(struct intel_excl_cntrs),
                         GFP_KERNEL, cpu_to_node(cpu));
        if (c) {
                raw_spin_lock_init(&c->lock);
                c->core_id = -1;
        }
        return c;
}

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

        if (x86_pmu.extra_regs || x86_pmu.lbr_sel_map) {
                cpuc->shared_regs = allocate_shared_regs(cpu);
                if (!cpuc->shared_regs)
                        goto err;
        }

        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)
                        goto err_shared_regs;

                cpuc->excl_cntrs = allocate_excl_cntrs(cpu);
                if (!cpuc->excl_cntrs)
                        goto err_constraint_list;

                cpuc->excl_thread_id = 0;
        }

        return NOTIFY_OK;

err_constraint_list:
        kfree(cpuc->constraint_list);
        cpuc->constraint_list = NULL;

err_shared_regs:
        kfree(cpuc->shared_regs);
        cpuc->shared_regs = NULL;

err:
        return NOTIFY_BAD;
}

static void intel_pmu_cpu_starting(int cpu)
{
        struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
        int core_id = topology_core_id(cpu);
        int i;

        init_debug_store_on_cpu(cpu);
        /*
         * Deal with CPUs that don't clear their LBRs on power-up.
         */
        intel_pmu_lbr_reset();

        cpuc->lbr_sel = NULL;

        if (!cpuc->shared_regs)
                return;

        if (!(x86_pmu.flags & PMU_FL_NO_HT_SHARING)) {
                for_each_cpu(i, topology_sibling_cpumask(cpu)) {
                        struct intel_shared_regs *pc;

                        pc = per_cpu(cpu_hw_events, i).shared_regs;
                        if (pc && pc->core_id == core_id) {
                                cpuc->kfree_on_online[0] = cpuc->shared_regs;
                                cpuc->shared_regs = pc;
                                break;
                        }
                }
                cpuc->shared_regs->core_id = core_id;
                cpuc->shared_regs->refcnt++;
        }

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

        if (x86_pmu.flags & PMU_FL_EXCL_CNTRS) {
                for_each_cpu(i, topology_sibling_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++;
        }
}

static void free_excl_cntrs(int cpu)
{
        struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
        struct intel_excl_cntrs *c;

        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;
        }
}

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;
        }

        free_excl_cntrs(cpu);

        fini_debug_store_on_cpu(cpu);
}

static void intel_pmu_sched_task(struct perf_event_context *ctx,
                                 bool sched_in)
{
        if (x86_pmu.pebs_active)
                intel_pmu_pebs_sched_task(ctx, sched_in);
        if (x86_pmu.lbr_nr)
                intel_pmu_lbr_sched_task(ctx, sched_in);
}

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

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

PMU_FORMAT_ATTR(frontend, "config1:0-23");

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,
        &format_attr_in_tx.attr,
        &format_attr_in_tx_cp.attr,

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

static struct attribute *skl_format_attr[] = {
        &format_attr_frontend.attr,
        NULL,
};

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,
        .free_running_flags     = PEBS_FREERUNNING_FLAGS,

        /*
         * 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,
};

static __initconst const struct x86_pmu intel_pmu = {
        .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,
        .hw_config              = intel_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,
        .free_running_flags     = PEBS_FREERUNNING_FLAGS,
        /*
         * 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,
        .pebs_aliases           = intel_pebs_aliases_core2,

        .format_attrs           = intel_arch3_formats_attr,
        .events_sysfs_show      = intel_event_sysfs_show,

        .cpu_prepare            = intel_pmu_cpu_prepare,
        .cpu_starting           = intel_pmu_cpu_starting,
        .cpu_dying              = intel_pmu_cpu_dying,
        .guest_get_msrs         = intel_guest_get_msrs,
        .sched_task             = intel_pmu_sched_task,
};

static __init void intel_clovertown_quirk(void)
{
        /*
         * 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
         *       a pebs_event_reset[0] value and coping with the lost events.
         *
         * But taken together it might just make sense to not enable PEBS on
         * these chips.
         */
        pr_warn("PEBS disabled due to CPU errata\n");
        x86_pmu.pebs = 0;
        x86_pmu.pebs_constraints = NULL;
}

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;
        }
}

/*
 * 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;
}

static __init void intel_sandybridge_quirk(void)
{
        x86_pmu.check_microcode = intel_snb_check_microcode;
        intel_snb_check_microcode();
}

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" },
};

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;
                pr_warn("CPUID marked event: \'%s\' unavailable\n",
                        intel_arch_events_map[bit].name);
        }
}

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;
                pr_info("CPU erratum AAJ80 worked around\n");
        }
}

/*
 * enable software workaround for errata:
 * SNB: BJ122
 * IVB: BV98
 * HSW: HSD29
 *
 * Only needed when HT is enabled. However detecting
 * 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
 */
static __init void intel_ht_bug(void)
{
        x86_pmu.flags |= PMU_FL_EXCL_CNTRS | PMU_FL_EXCL_ENABLED;

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

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")

/* Haswell special events */
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");

static struct attribute *hsw_events_attrs[] = {
        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),
        EVENT_PTR(mem_ld_hsw),
        EVENT_PTR(mem_st_hsw),
        NULL
};

__init int intel_pmu_init(void)
{
        union cpuid10_edx edx;
        union cpuid10_eax eax;
        union cpuid10_ebx ebx;
        struct event_constraint *c;
        unsigned int unused;
        struct extra_reg *er;
        int version, i;

        if (!cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
                switch (boot_cpu_data.x86) {
                case 0x6:
                        return p6_pmu_init();
                case 0xb:
                        return knc_pmu_init();
                case 0xf:
                        return p4_pmu_init();
                }
                return -ENODEV;
        }

        /*
         * Check whether the Architectural PerfMon supports
         * Branch Misses Retired hw_event or not.
         */
        cpuid(10, &eax.full, &ebx.full, &unused, &edx.full);
        if (eax.split.mask_length < ARCH_PERFMON_EVENTS_COUNT)
                return -ENODEV;

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

        x86_pmu.version                 = version;
        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;

        x86_pmu.events_maskl            = ebx.full;
        x86_pmu.events_mask_len         = eax.split.mask_length;

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

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

        if (boot_cpu_has(X86_FEATURE_PDCM)) {
                u64 capabilities;

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

        intel_ds_init();

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

        /*
         * Install the hw-cache-events table:
         */
        switch (boot_cpu_data.x86_model) {
        case 14: /* 65nm Core "Yonah" */
                pr_cont("Core events, ");
                break;

        case 15: /* 65nm Core2 "Merom"          */
                x86_add_quirk(intel_clovertown_quirk);
        case 22: /* 65nm Core2 "Merom-L"        */
        case 23: /* 45nm Core2 "Penryn"         */
        case 29: /* 45nm Core2 "Dunnington (MP) */
                memcpy(hw_cache_event_ids, core2_hw_cache_event_ids,
                       sizeof(hw_cache_event_ids));

                intel_pmu_lbr_init_core();

                x86_pmu.event_constraints = intel_core2_event_constraints;
                x86_pmu.pebs_constraints = intel_core2_pebs_event_constraints;
                pr_cont("Core2 events, ");
                break;

        case 30: /* 45nm Nehalem    */
        case 26: /* 45nm Nehalem-EP */
        case 46: /* 45nm Nehalem-EX */
                memcpy(hw_cache_event_ids, nehalem_hw_cache_event_ids,
                       sizeof(hw_cache_event_ids));
                memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
                       sizeof(hw_cache_extra_regs));

                intel_pmu_lbr_init_nhm();

                x86_pmu.event_constraints = intel_nehalem_event_constraints;
                x86_pmu.pebs_constraints = intel_nehalem_pebs_event_constraints;
                x86_pmu.enable_all = intel_pmu_nhm_enable_all;
                x86_pmu.extra_regs = intel_nehalem_extra_regs;

                x86_pmu.cpu_events = nhm_events_attrs;

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

                intel_pmu_pebs_data_source_nhm();
                x86_add_quirk(intel_nehalem_quirk);

                pr_cont("Nehalem events, ");
                break;

        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"  */
                memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
                       sizeof(hw_cache_event_ids));

                intel_pmu_lbr_init_atom();

                x86_pmu.event_constraints = intel_gen_event_constraints;
                x86_pmu.pebs_constraints = intel_atom_pebs_event_constraints;
                x86_pmu.pebs_aliases = intel_pebs_aliases_core2;
                pr_cont("Atom events, ");
                break;

        case 55: /* 22nm Atom "Silvermont"                */
        case 76: /* 14nm Atom "Airmont"                   */
        case 77: /* 22nm Atom "Silvermont Avoton/Rangely" */
                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;
                x86_pmu.flags |= PMU_FL_HAS_RSP_1;
                pr_cont("Silvermont events, ");
                break;

        case 37: /* 32nm Westmere    */
        case 44: /* 32nm Westmere-EP */
        case 47: /* 32nm Westmere-EX */
                memcpy(hw_cache_event_ids, westmere_hw_cache_event_ids,
                       sizeof(hw_cache_event_ids));
                memcpy(hw_cache_extra_regs, nehalem_hw_cache_extra_regs,
                       sizeof(hw_cache_extra_regs));

                intel_pmu_lbr_init_nhm();

                x86_pmu.event_constraints = intel_westmere_event_constraints;
                x86_pmu.enable_all = intel_pmu_nhm_enable_all;
                x86_pmu.pebs_constraints = intel_westmere_pebs_event_constraints;
                x86_pmu.extra_regs = intel_westmere_extra_regs;
                x86_pmu.flags |= PMU_FL_HAS_RSP_1;

                x86_pmu.cpu_events = nhm_events_attrs;

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

                intel_pmu_pebs_data_source_nhm();
                pr_cont("Westmere events, ");
                break;

        case 42: /* 32nm SandyBridge         */
        case 45: /* 32nm SandyBridge-E/EN/EP */
                x86_add_quirk(intel_sandybridge_quirk);
                x86_add_quirk(intel_ht_bug);
                memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
                       sizeof(hw_cache_event_ids));
                memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
                       sizeof(hw_cache_extra_regs));

                intel_pmu_lbr_init_snb();

                x86_pmu.event_constraints = intel_snb_event_constraints;
                x86_pmu.pebs_constraints = intel_snb_pebs_event_constraints;
                x86_pmu.pebs_aliases = intel_pebs_aliases_snb;
                if (boot_cpu_data.x86_model == 45)
                        x86_pmu.extra_regs = intel_snbep_extra_regs;
                else
                        x86_pmu.extra_regs = intel_snb_extra_regs;


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

                x86_pmu.cpu_events = snb_events_attrs;

                /* 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);
                /* UOPS_DISPATCHED.THREAD,c=1,i=1 to count stall cycles*/
                intel_perfmon_event_map[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =
                        X86_CONFIG(.event=0xb1, .umask=0x01, .inv=1, .cmask=1);

                pr_cont("SandyBridge events, ");
                break;

        case 58: /* 22nm IvyBridge       */
        case 62: /* 22nm IvyBridge-EP/EX */
                x86_add_quirk(intel_ht_bug);
                memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
                       sizeof(hw_cache_event_ids));
                /* 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 */

                memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,
                       sizeof(hw_cache_extra_regs));

                intel_pmu_lbr_init_snb();

                x86_pmu.event_constraints = intel_ivb_event_constraints;
                x86_pmu.pebs_constraints = intel_ivb_pebs_event_constraints;
                x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
                x86_pmu.pebs_prec_dist = true;
                if (boot_cpu_data.x86_model == 62)
                        x86_pmu.extra_regs = intel_snbep_extra_regs;
                else
                        x86_pmu.extra_regs = intel_snb_extra_regs;
                /* all extra regs are per-cpu when HT is on */
                x86_pmu.flags |= PMU_FL_HAS_RSP_1;
                x86_pmu.flags |= PMU_FL_NO_HT_SHARING;

                x86_pmu.cpu_events = snb_events_attrs;

                /* 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;


        case 60: /* 22nm Haswell Core */
        case 63: /* 22nm Haswell Server */
        case 69: /* 22nm Haswell ULT */
        case 70: /* 22nm Haswell + GT3e (Intel Iris Pro graphics) */
                x86_add_quirk(intel_ht_bug);
                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));

                intel_pmu_lbr_init_hsw();

                x86_pmu.event_constraints = intel_hsw_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_ivb;
                x86_pmu.pebs_prec_dist = true;
                /* all extra regs are per-cpu when HT is on */
                x86_pmu.flags |= PMU_FL_HAS_RSP_1;
                x86_pmu.flags |= PMU_FL_NO_HT_SHARING;

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

        case 61: /* 14nm Broadwell Core-M */
        case 86: /* 14nm Broadwell Xeon D */
        case 71: /* 14nm Broadwell + GT3e (Intel Iris Pro graphics) */
        case 79: /* 14nm Broadwell Server */
                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;

                intel_pmu_lbr_init_hsw();

                x86_pmu.event_constraints = intel_bdw_event_constraints;
                x86_pmu.pebs_constraints = intel_bdw_pebs_event_constraints;
                x86_pmu.extra_regs = intel_snbep_extra_regs;
                x86_pmu.pebs_aliases = intel_pebs_aliases_ivb;
                x86_pmu.pebs_prec_dist = true;
                /* all extra regs are per-cpu when HT is on */
                x86_pmu.flags |= PMU_FL_HAS_RSP_1;
                x86_pmu.flags |= PMU_FL_NO_HT_SHARING;

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

        case 87: /* Knights Landing Xeon Phi */
                memcpy(hw_cache_event_ids,
                       slm_hw_cache_event_ids, sizeof(hw_cache_event_ids));
                memcpy(hw_cache_extra_regs,
                       knl_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
                intel_pmu_lbr_init_knl();

                x86_pmu.event_constraints = intel_slm_event_constraints;
                x86_pmu.pebs_constraints = intel_slm_pebs_event_constraints;
                x86_pmu.extra_regs = intel_knl_extra_regs;

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

                pr_cont("Knights Landing events, ");
                break;

        case 142: /* 14nm Kabylake Mobile */
        case 158: /* 14nm Kabylake Desktop */
        case 78: /* 14nm Skylake Mobile */
        case 94: /* 14nm Skylake Desktop */
        case 85: /* 14nm Skylake Server */
                x86_pmu.late_ack = true;
                memcpy(hw_cache_event_ids, skl_hw_cache_event_ids, sizeof(hw_cache_event_ids));
                memcpy(hw_cache_extra_regs, skl_hw_cache_extra_regs, sizeof(hw_cache_extra_regs));
                intel_pmu_lbr_init_skl();

                x86_pmu.event_constraints = intel_skl_event_constraints;
                x86_pmu.pebs_constraints = intel_skl_pebs_event_constraints;
                x86_pmu.extra_regs = intel_skl_extra_regs;
                x86_pmu.pebs_aliases = intel_pebs_aliases_skl;
                x86_pmu.pebs_prec_dist = true;
                /* all extra regs are per-cpu when HT is on */
                x86_pmu.flags |= PMU_FL_HAS_RSP_1;
                x86_pmu.flags |= PMU_FL_NO_HT_SHARING;

                x86_pmu.hw_config = hsw_hw_config;
                x86_pmu.get_event_constraints = hsw_get_event_constraints;
                x86_pmu.format_attrs = merge_attr(intel_arch3_formats_attr,
                                                  skl_format_attr);
                WARN_ON(!x86_pmu.format_attrs);
                x86_pmu.cpu_events = hsw_events_attrs;
                pr_cont("Skylake events, ");
                break;

        default:
                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;
                }
        }

        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) {
                        if (c->cmask == FIXED_EVENT_FLAGS
                            && c->idxmsk64 != INTEL_PMC_MSK_FIXED_REF_CYCLES) {
                                c->idxmsk64 |= (1ULL << x86_pmu.num_counters) - 1;
                        }
                        c->idxmsk64 &=
                                ~(~0ULL << (INTEL_PMC_IDX_FIXED + x86_pmu.num_counters_fixed));
                        c->weight = hweight64(c->idxmsk64);
                }
        }

        /*
         * 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, 0x11UL);
                        /* Disable LBR select mapping */
                        if ((er->idx == EXTRA_REG_LBR) && !er->extra_msr_access)
                                x86_pmu.lbr_sel_map = NULL;
                }
        }

        /* 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, ");
        }

        return 0;
}

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

        if (lockup_detector_suspend() != 0) {
                pr_debug("failed to disable PMU erratum BJ122, BV98, HSD29 workaround\n");
                return 0;
        }

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

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

        lockup_detector_resume();

        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)