// SPDX-License-Identifier: GPL-2.0
/* Nehalem/SandBridge/Haswell/Broadwell/Skylake uncore support */
#include "uncore.h"

/* Uncore IMC PCI IDs */
#define PCI_DEVICE_ID_INTEL_SNB_IMC     0x0100
#define PCI_DEVICE_ID_INTEL_IVB_IMC     0x0154
#define PCI_DEVICE_ID_INTEL_IVB_E3_IMC  0x0150
#define PCI_DEVICE_ID_INTEL_HSW_IMC     0x0c00
#define PCI_DEVICE_ID_INTEL_HSW_U_IMC   0x0a04
#define PCI_DEVICE_ID_INTEL_BDW_IMC     0x1604
#define PCI_DEVICE_ID_INTEL_SKL_U_IMC   0x1904
#define PCI_DEVICE_ID_INTEL_SKL_Y_IMC   0x190c
#define PCI_DEVICE_ID_INTEL_SKL_HD_IMC  0x1900
#define PCI_DEVICE_ID_INTEL_SKL_HQ_IMC  0x1910
#define PCI_DEVICE_ID_INTEL_SKL_SD_IMC  0x190f
#define PCI_DEVICE_ID_INTEL_SKL_SQ_IMC  0x191f

/* SNB event control */
#define SNB_UNC_CTL_EV_SEL_MASK                 0x000000ff
#define SNB_UNC_CTL_UMASK_MASK                  0x0000ff00
#define SNB_UNC_CTL_EDGE_DET                    (1 << 18)
#define SNB_UNC_CTL_EN                          (1 << 22)
#define SNB_UNC_CTL_INVERT                      (1 << 23)
#define SNB_UNC_CTL_CMASK_MASK                  0x1f000000
#define NHM_UNC_CTL_CMASK_MASK                  0xff000000
#define NHM_UNC_FIXED_CTR_CTL_EN                (1 << 0)

#define SNB_UNC_RAW_EVENT_MASK                  (SNB_UNC_CTL_EV_SEL_MASK | \
                                                 SNB_UNC_CTL_UMASK_MASK | \
                                                 SNB_UNC_CTL_EDGE_DET | \
                                                 SNB_UNC_CTL_INVERT | \
                                                 SNB_UNC_CTL_CMASK_MASK)

#define NHM_UNC_RAW_EVENT_MASK                  (SNB_UNC_CTL_EV_SEL_MASK | \
                                                 SNB_UNC_CTL_UMASK_MASK | \
                                                 SNB_UNC_CTL_EDGE_DET | \
                                                 SNB_UNC_CTL_INVERT | \
                                                 NHM_UNC_CTL_CMASK_MASK)

/* SNB global control register */
#define SNB_UNC_PERF_GLOBAL_CTL                 0x391
#define SNB_UNC_FIXED_CTR_CTRL                  0x394
#define SNB_UNC_FIXED_CTR                       0x395

/* SNB uncore global control */
#define SNB_UNC_GLOBAL_CTL_CORE_ALL             ((1 << 4) - 1)
#define SNB_UNC_GLOBAL_CTL_EN                   (1 << 29)

/* SNB Cbo register */
#define SNB_UNC_CBO_0_PERFEVTSEL0               0x700
#define SNB_UNC_CBO_0_PER_CTR0                  0x706
#define SNB_UNC_CBO_MSR_OFFSET                  0x10

/* SNB ARB register */
#define SNB_UNC_ARB_PER_CTR0                    0x3b0
#define SNB_UNC_ARB_PERFEVTSEL0                 0x3b2
#define SNB_UNC_ARB_MSR_OFFSET                  0x10

/* NHM global control register */
#define NHM_UNC_PERF_GLOBAL_CTL                 0x391
#define NHM_UNC_FIXED_CTR                       0x394
#define NHM_UNC_FIXED_CTR_CTRL                  0x395

/* NHM uncore global control */
#define NHM_UNC_GLOBAL_CTL_EN_PC_ALL            ((1ULL << 8) - 1)
#define NHM_UNC_GLOBAL_CTL_EN_FC                (1ULL << 32)

/* NHM uncore register */
#define NHM_UNC_PERFEVTSEL0                     0x3c0
#define NHM_UNC_UNCORE_PMC0                     0x3b0

/* SKL uncore global control */
#define SKL_UNC_PERF_GLOBAL_CTL                 0xe01
#define SKL_UNC_GLOBAL_CTL_CORE_ALL             ((1 << 5) - 1)

DEFINE_UNCORE_FORMAT_ATTR(event, event, "config:0-7");
DEFINE_UNCORE_FORMAT_ATTR(umask, umask, "config:8-15");
DEFINE_UNCORE_FORMAT_ATTR(edge, edge, "config:18");
DEFINE_UNCORE_FORMAT_ATTR(inv, inv, "config:23");
DEFINE_UNCORE_FORMAT_ATTR(cmask5, cmask, "config:24-28");
DEFINE_UNCORE_FORMAT_ATTR(cmask8, cmask, "config:24-31");

/* Sandy Bridge uncore support */
static void snb_uncore_msr_enable_event(struct intel_uncore_box *box, struct perf_event *event)
{
        struct hw_perf_event *hwc = &event->hw;

        if (hwc->idx < UNCORE_PMC_IDX_FIXED)
                wrmsrl(hwc->config_base, hwc->config | SNB_UNC_CTL_EN);
        else
                wrmsrl(hwc->config_base, SNB_UNC_CTL_EN);
}

static void snb_uncore_msr_disable_event(struct intel_uncore_box *box, struct perf_event *event)
{
        wrmsrl(event->hw.config_base, 0);
}

static void snb_uncore_msr_init_box(struct intel_uncore_box *box)
{
        if (box->pmu->pmu_idx == 0) {
                wrmsrl(SNB_UNC_PERF_GLOBAL_CTL,
                        SNB_UNC_GLOBAL_CTL_EN | SNB_UNC_GLOBAL_CTL_CORE_ALL);
        }
}

static void snb_uncore_msr_enable_box(struct intel_uncore_box *box)
{
        wrmsrl(SNB_UNC_PERF_GLOBAL_CTL,
                SNB_UNC_GLOBAL_CTL_EN | SNB_UNC_GLOBAL_CTL_CORE_ALL);
}

static void snb_uncore_msr_exit_box(struct intel_uncore_box *box)
{
        if (box->pmu->pmu_idx == 0)
                wrmsrl(SNB_UNC_PERF_GLOBAL_CTL, 0);
}

static struct uncore_event_desc snb_uncore_events[] = {
        INTEL_UNCORE_EVENT_DESC(clockticks, "event=0xff,umask=0x00"),
        { /* end: all zeroes */ },
};

static struct attribute *snb_uncore_formats_attr[] = {
        &format_attr_event.attr,
        &format_attr_umask.attr,
        &format_attr_edge.attr,
        &format_attr_inv.attr,
        &format_attr_cmask5.attr,
        NULL,
};

static const struct attribute_group snb_uncore_format_group = {
        .name           = "format",
        .attrs          = snb_uncore_formats_attr,
};

static struct intel_uncore_ops snb_uncore_msr_ops = {
        .init_box       = snb_uncore_msr_init_box,
        .enable_box     = snb_uncore_msr_enable_box,
        .exit_box       = snb_uncore_msr_exit_box,
        .disable_event  = snb_uncore_msr_disable_event,
        .enable_event   = snb_uncore_msr_enable_event,
        .read_counter   = uncore_msr_read_counter,
};

static struct event_constraint snb_uncore_arb_constraints[] = {
        UNCORE_EVENT_CONSTRAINT(0x80, 0x1),
        UNCORE_EVENT_CONSTRAINT(0x83, 0x1),
        EVENT_CONSTRAINT_END
};

static struct intel_uncore_type snb_uncore_cbox = {
        .name           = "cbox",
        .num_counters   = 2,
        .num_boxes      = 4,
        .perf_ctr_bits  = 44,
        .fixed_ctr_bits = 48,
        .perf_ctr       = SNB_UNC_CBO_0_PER_CTR0,
        .event_ctl      = SNB_UNC_CBO_0_PERFEVTSEL0,
        .fixed_ctr      = SNB_UNC_FIXED_CTR,
        .fixed_ctl      = SNB_UNC_FIXED_CTR_CTRL,
        .single_fixed   = 1,
        .event_mask     = SNB_UNC_RAW_EVENT_MASK,
        .msr_offset     = SNB_UNC_CBO_MSR_OFFSET,
        .ops            = &snb_uncore_msr_ops,
        .format_group   = &snb_uncore_format_group,
        .event_descs    = snb_uncore_events,
};

static struct intel_uncore_type snb_uncore_arb = {
        .name           = "arb",
        .num_counters   = 2,
        .num_boxes      = 1,
        .perf_ctr_bits  = 44,
        .perf_ctr       = SNB_UNC_ARB_PER_CTR0,
        .event_ctl      = SNB_UNC_ARB_PERFEVTSEL0,
        .event_mask     = SNB_UNC_RAW_EVENT_MASK,
        .msr_offset     = SNB_UNC_ARB_MSR_OFFSET,
        .constraints    = snb_uncore_arb_constraints,
        .ops            = &snb_uncore_msr_ops,
        .format_group   = &snb_uncore_format_group,
};

static struct intel_uncore_type *snb_msr_uncores[] = {
        &snb_uncore_cbox,
        &snb_uncore_arb,
        NULL,
};

void snb_uncore_cpu_init(void)
{
        uncore_msr_uncores = snb_msr_uncores;
        if (snb_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores)
                snb_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores;
}

static void skl_uncore_msr_init_box(struct intel_uncore_box *box)
{
        if (box->pmu->pmu_idx == 0) {
                wrmsrl(SKL_UNC_PERF_GLOBAL_CTL,
                        SNB_UNC_GLOBAL_CTL_EN | SKL_UNC_GLOBAL_CTL_CORE_ALL);
        }
}

static void skl_uncore_msr_enable_box(struct intel_uncore_box *box)
{
        wrmsrl(SKL_UNC_PERF_GLOBAL_CTL,
                SNB_UNC_GLOBAL_CTL_EN | SKL_UNC_GLOBAL_CTL_CORE_ALL);
}

static void skl_uncore_msr_exit_box(struct intel_uncore_box *box)
{
        if (box->pmu->pmu_idx == 0)
                wrmsrl(SKL_UNC_PERF_GLOBAL_CTL, 0);
}

static struct intel_uncore_ops skl_uncore_msr_ops = {
        .init_box       = skl_uncore_msr_init_box,
        .enable_box     = skl_uncore_msr_enable_box,
        .exit_box       = skl_uncore_msr_exit_box,
        .disable_event  = snb_uncore_msr_disable_event,
        .enable_event   = snb_uncore_msr_enable_event,
        .read_counter   = uncore_msr_read_counter,
};

static struct intel_uncore_type skl_uncore_cbox = {
        .name           = "cbox",
        .num_counters   = 4,
        .num_boxes      = 5,
        .perf_ctr_bits  = 44,
        .fixed_ctr_bits = 48,
        .perf_ctr       = SNB_UNC_CBO_0_PER_CTR0,
        .event_ctl      = SNB_UNC_CBO_0_PERFEVTSEL0,
        .fixed_ctr      = SNB_UNC_FIXED_CTR,
        .fixed_ctl      = SNB_UNC_FIXED_CTR_CTRL,
        .single_fixed   = 1,
        .event_mask     = SNB_UNC_RAW_EVENT_MASK,
        .msr_offset     = SNB_UNC_CBO_MSR_OFFSET,
        .ops            = &skl_uncore_msr_ops,
        .format_group   = &snb_uncore_format_group,
        .event_descs    = snb_uncore_events,
};

static struct intel_uncore_type *skl_msr_uncores[] = {
        &skl_uncore_cbox,
        &snb_uncore_arb,
        NULL,
};

void skl_uncore_cpu_init(void)
{
        uncore_msr_uncores = skl_msr_uncores;
        if (skl_uncore_cbox.num_boxes > boot_cpu_data.x86_max_cores)
                skl_uncore_cbox.num_boxes = boot_cpu_data.x86_max_cores;
        snb_uncore_arb.ops = &skl_uncore_msr_ops;
}

enum {
        SNB_PCI_UNCORE_IMC,
};

static struct uncore_event_desc snb_uncore_imc_events[] = {
        INTEL_UNCORE_EVENT_DESC(data_reads,  "event=0x01"),
        INTEL_UNCORE_EVENT_DESC(data_reads.scale, "6.103515625e-5"),
        INTEL_UNCORE_EVENT_DESC(data_reads.unit, "MiB"),

        INTEL_UNCORE_EVENT_DESC(data_writes, "event=0x02"),
        INTEL_UNCORE_EVENT_DESC(data_writes.scale, "6.103515625e-5"),
        INTEL_UNCORE_EVENT_DESC(data_writes.unit, "MiB"),

        { /* end: all zeroes */ },
};

#define SNB_UNCORE_PCI_IMC_EVENT_MASK           0xff
#define SNB_UNCORE_PCI_IMC_BAR_OFFSET           0x48

/* page size multiple covering all config regs */
#define SNB_UNCORE_PCI_IMC_MAP_SIZE             0x6000

#define SNB_UNCORE_PCI_IMC_DATA_READS           0x1
#define SNB_UNCORE_PCI_IMC_DATA_READS_BASE      0x5050
#define SNB_UNCORE_PCI_IMC_DATA_WRITES          0x2
#define SNB_UNCORE_PCI_IMC_DATA_WRITES_BASE     0x5054
#define SNB_UNCORE_PCI_IMC_CTR_BASE             SNB_UNCORE_PCI_IMC_DATA_READS_BASE

static struct attribute *snb_uncore_imc_formats_attr[] = {
        &format_attr_event.attr,
        NULL,
};

static const struct attribute_group snb_uncore_imc_format_group = {
        .name = "format",
        .attrs = snb_uncore_imc_formats_attr,
};

static void snb_uncore_imc_init_box(struct intel_uncore_box *box)
{
        struct pci_dev *pdev = box->pci_dev;
        int where = SNB_UNCORE_PCI_IMC_BAR_OFFSET;
        resource_size_t addr;
        u32 pci_dword;

        pci_read_config_dword(pdev, where, &pci_dword);
        addr = pci_dword;

#ifdef CONFIG_PHYS_ADDR_T_64BIT
        pci_read_config_dword(pdev, where + 4, &pci_dword);
        addr |= ((resource_size_t)pci_dword << 32);
#endif

        addr &= ~(PAGE_SIZE - 1);

        box->io_addr = ioremap(addr, SNB_UNCORE_PCI_IMC_MAP_SIZE);
        box->hrtimer_duration = UNCORE_SNB_IMC_HRTIMER_INTERVAL;
}

static void snb_uncore_imc_exit_box(struct intel_uncore_box *box)
{
        iounmap(box->io_addr);
}

static void snb_uncore_imc_enable_box(struct intel_uncore_box *box)
{}

static void snb_uncore_imc_disable_box(struct intel_uncore_box *box)
{}

static void snb_uncore_imc_enable_event(struct intel_uncore_box *box, struct perf_event *event)
{}

static void snb_uncore_imc_disable_event(struct intel_uncore_box *box, struct perf_event *event)
{}

static u64 snb_uncore_imc_read_counter(struct intel_uncore_box *box, struct perf_event *event)
{
        struct hw_perf_event *hwc = &event->hw;

        return (u64)*(unsigned int *)(box->io_addr + hwc->event_base);
}

/*
 * custom event_init() function because we define our own fixed, free
 * running counters, so we do not want to conflict with generic uncore
 * logic. Also simplifies processing
 */
static int snb_uncore_imc_event_init(struct perf_event *event)
{
        struct intel_uncore_pmu *pmu;
        struct intel_uncore_box *box;
        struct hw_perf_event *hwc = &event->hw;
        u64 cfg = event->attr.config & SNB_UNCORE_PCI_IMC_EVENT_MASK;
        int idx, base;

        if (event->attr.type != event->pmu->type)
                return -ENOENT;

        pmu = uncore_event_to_pmu(event);
        /* no device found for this pmu */
        if (pmu->func_id < 0)
                return -ENOENT;

        /* Sampling not supported yet */
        if (hwc->sample_period)
                return -EINVAL;

        /* unsupported modes and filters */
        if (event->attr.exclude_user   ||
            event->attr.exclude_kernel ||
            event->attr.exclude_hv     ||
            event->attr.exclude_idle   ||
            event->attr.exclude_host   ||
            event->attr.exclude_guest  ||
            event->attr.sample_period) /* no sampling */
                return -EINVAL;

        /*
         * Place all uncore events for a particular physical package
         * onto a single cpu
         */
        if (event->cpu < 0)
                return -EINVAL;

        /* check only supported bits are set */
        if (event->attr.config & ~SNB_UNCORE_PCI_IMC_EVENT_MASK)
                return -EINVAL;

        box = uncore_pmu_to_box(pmu, event->cpu);
        if (!box || box->cpu < 0)
                return -EINVAL;

        event->cpu = box->cpu;
        event->pmu_private = box;

        event->event_caps |= PERF_EV_CAP_READ_ACTIVE_PKG;

        event->hw.idx = -1;
        event->hw.last_tag = ~0ULL;
        event->hw.extra_reg.idx = EXTRA_REG_NONE;
        event->hw.branch_reg.idx = EXTRA_REG_NONE;
        /*
         * check event is known (whitelist, determines counter)
         */
        switch (cfg) {
        case SNB_UNCORE_PCI_IMC_DATA_READS:
                base = SNB_UNCORE_PCI_IMC_DATA_READS_BASE;
                idx = UNCORE_PMC_IDX_FIXED;
                break;
        case SNB_UNCORE_PCI_IMC_DATA_WRITES:
                base = SNB_UNCORE_PCI_IMC_DATA_WRITES_BASE;
                idx = UNCORE_PMC_IDX_FIXED + 1;
                break;
        default:
                return -EINVAL;
        }

        /* must be done before validate_group */
        event->hw.event_base = base;
        event->hw.config = cfg;
        event->hw.idx = idx;

        /* no group validation needed, we have free running counters */

        return 0;
}

static int snb_uncore_imc_hw_config(struct intel_uncore_box *box, struct perf_event *event)
{
        return 0;
}

static void snb_uncore_imc_event_start(struct perf_event *event, int flags)
{
        struct intel_uncore_box *box = uncore_event_to_box(event);
        u64 count;

        if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED)))
                return;

        event->hw.state = 0;
        box->n_active++;

        list_add_tail(&event->active_entry, &box->active_list);

        count = snb_uncore_imc_read_counter(box, event);
        local64_set(&event->hw.prev_count, count);

        if (box->n_active == 1)
                uncore_pmu_start_hrtimer(box);
}

static void snb_uncore_imc_event_stop(struct perf_event *event, int flags)
{
        struct intel_uncore_box *box = uncore_event_to_box(event);
        struct hw_perf_event *hwc = &event->hw;

        if (!(hwc->state & PERF_HES_STOPPED)) {
                box->n_active--;

                WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED);
                hwc->state |= PERF_HES_STOPPED;

                list_del(&event->active_entry);

                if (box->n_active == 0)
                        uncore_pmu_cancel_hrtimer(box);
        }

        if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) {
                /*
                 * Drain the remaining delta count out of a event
                 * that we are disabling:
                 */
                uncore_perf_event_update(box, event);
                hwc->state |= PERF_HES_UPTODATE;
        }
}

static int snb_uncore_imc_event_add(struct perf_event *event, int flags)
{
        struct intel_uncore_box *box = uncore_event_to_box(event);
        struct hw_perf_event *hwc = &event->hw;

        if (!box)
                return -ENODEV;

        hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
        if (!(flags & PERF_EF_START))
                hwc->state |= PERF_HES_ARCH;

        snb_uncore_imc_event_start(event, 0);

        return 0;
}

static void snb_uncore_imc_event_del(struct perf_event *event, int flags)
{
        snb_uncore_imc_event_stop(event, PERF_EF_UPDATE);
}

int snb_pci2phy_map_init(int devid)
{
        struct pci_dev *dev = NULL;
        struct pci2phy_map *map;
        int bus, segment;

        dev = pci_get_device(PCI_VENDOR_ID_INTEL, devid, dev);
        if (!dev)
                return -ENOTTY;

        bus = dev->bus->number;
        segment = pci_domain_nr(dev->bus);

        raw_spin_lock(&pci2phy_map_lock);
        map = __find_pci2phy_map(segment);
        if (!map) {
                raw_spin_unlock(&pci2phy_map_lock);
                pci_dev_put(dev);
                return -ENOMEM;
        }
        map->pbus_to_physid[bus] = 0;
        raw_spin_unlock(&pci2phy_map_lock);

        pci_dev_put(dev);

        return 0;
}

static struct pmu snb_uncore_imc_pmu = {
        .task_ctx_nr    = perf_invalid_context,
        .event_init     = snb_uncore_imc_event_init,
        .add            = snb_uncore_imc_event_add,
        .del            = snb_uncore_imc_event_del,
        .start          = snb_uncore_imc_event_start,
        .stop           = snb_uncore_imc_event_stop,
        .read           = uncore_pmu_event_read,
};

static struct intel_uncore_ops snb_uncore_imc_ops = {
        .init_box       = snb_uncore_imc_init_box,
        .exit_box       = snb_uncore_imc_exit_box,
        .enable_box     = snb_uncore_imc_enable_box,
        .disable_box    = snb_uncore_imc_disable_box,
        .disable_event  = snb_uncore_imc_disable_event,
        .enable_event   = snb_uncore_imc_enable_event,
        .hw_config      = snb_uncore_imc_hw_config,
        .read_counter   = snb_uncore_imc_read_counter,
};

static struct intel_uncore_type snb_uncore_imc = {
        .name           = "imc",
        .num_counters   = 2,
        .num_boxes      = 1,
        .fixed_ctr_bits = 32,
        .fixed_ctr      = SNB_UNCORE_PCI_IMC_CTR_BASE,
        .event_descs    = snb_uncore_imc_events,
        .format_group   = &snb_uncore_imc_format_group,
        .perf_ctr       = SNB_UNCORE_PCI_IMC_DATA_READS_BASE,
        .event_mask     = SNB_UNCORE_PCI_IMC_EVENT_MASK,
        .ops            = &snb_uncore_imc_ops,
        .pmu            = &snb_uncore_imc_pmu,
};

static struct intel_uncore_type *snb_pci_uncores[] = {
        [SNB_PCI_UNCORE_IMC]    = &snb_uncore_imc,
        NULL,
};

static const struct pci_device_id snb_uncore_pci_ids[] = {
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SNB_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* end: all zeroes */ },
};

static const struct pci_device_id ivb_uncore_pci_ids[] = {
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_E3_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* end: all zeroes */ },
};

static const struct pci_device_id hsw_uncore_pci_ids[] = {
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_HSW_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_HSW_U_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* end: all zeroes */ },
};

static const struct pci_device_id bdw_uncore_pci_ids[] = {
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BDW_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* end: all zeroes */ },
};

static const struct pci_device_id skl_uncore_pci_ids[] = {
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_Y_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_U_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_HD_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_HQ_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_SD_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },
        { /* IMC */
                PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SKL_SQ_IMC),
                .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
        },

        { /* end: all zeroes */ },
};

static struct pci_driver snb_uncore_pci_driver = {
        .name           = "snb_uncore",
        .id_table       = snb_uncore_pci_ids,
};

static struct pci_driver ivb_uncore_pci_driver = {
        .name           = "ivb_uncore",
        .id_table       = ivb_uncore_pci_ids,
};

static struct pci_driver hsw_uncore_pci_driver = {
        .name           = "hsw_uncore",
        .id_table       = hsw_uncore_pci_ids,
};

static struct pci_driver bdw_uncore_pci_driver = {
        .name           = "bdw_uncore",
        .id_table       = bdw_uncore_pci_ids,
};

static struct pci_driver skl_uncore_pci_driver = {
        .name           = "skl_uncore",
        .id_table       = skl_uncore_pci_ids,
};

struct imc_uncore_pci_dev {
        __u32 pci_id;
        struct pci_driver *driver;
};
#define IMC_DEV(a, d) \
        { .pci_id = PCI_DEVICE_ID_INTEL_##a, .driver = (d) }

static const struct imc_uncore_pci_dev desktop_imc_pci_ids[] = {
        IMC_DEV(SNB_IMC, &snb_uncore_pci_driver),
        IMC_DEV(IVB_IMC, &ivb_uncore_pci_driver),    /* 3rd Gen Core processor */
        IMC_DEV(IVB_E3_IMC, &ivb_uncore_pci_driver), /* Xeon E3-1200 v2/3rd Gen Core processor */
        IMC_DEV(HSW_IMC, &hsw_uncore_pci_driver),    /* 4th Gen Core Processor */
        IMC_DEV(HSW_U_IMC, &hsw_uncore_pci_driver),  /* 4th Gen Core ULT Mobile Processor */
        IMC_DEV(BDW_IMC, &bdw_uncore_pci_driver),    /* 5th Gen Core U */
        IMC_DEV(SKL_Y_IMC, &skl_uncore_pci_driver),  /* 6th Gen Core Y */
        IMC_DEV(SKL_U_IMC, &skl_uncore_pci_driver),  /* 6th Gen Core U */
        IMC_DEV(SKL_HD_IMC, &skl_uncore_pci_driver),  /* 6th Gen Core H Dual Core */
        IMC_DEV(SKL_HQ_IMC, &skl_uncore_pci_driver),  /* 6th Gen Core H Quad Core */
        IMC_DEV(SKL_SD_IMC, &skl_uncore_pci_driver),  /* 6th Gen Core S Dual Core */
        IMC_DEV(SKL_SQ_IMC, &skl_uncore_pci_driver),  /* 6th Gen Core S Quad Core */
        {  /* end marker */ }
};


#define for_each_imc_pci_id(x, t) \
        for (x = (t); (x)->pci_id; x++)

static struct pci_driver *imc_uncore_find_dev(void)
{
        const struct imc_uncore_pci_dev *p;
        int ret;

        for_each_imc_pci_id(p, desktop_imc_pci_ids) {
                ret = snb_pci2phy_map_init(p->pci_id);
                if (ret == 0)
                        return p->driver;
        }
        return NULL;
}

static int imc_uncore_pci_init(void)
{
        struct pci_driver *imc_drv = imc_uncore_find_dev();

        if (!imc_drv)
                return -ENODEV;

        uncore_pci_uncores = snb_pci_uncores;
        uncore_pci_driver = imc_drv;

        return 0;
}

int snb_uncore_pci_init(void)
{
        return imc_uncore_pci_init();
}

int ivb_uncore_pci_init(void)
{
        return imc_uncore_pci_init();
}
int hsw_uncore_pci_init(void)
{
        return imc_uncore_pci_init();
}

int bdw_uncore_pci_init(void)
{
        return imc_uncore_pci_init();
}

int skl_uncore_pci_init(void)
{
        return imc_uncore_pci_init();
}

/* end of Sandy Bridge uncore support */

/* Nehalem uncore support */
static void nhm_uncore_msr_disable_box(struct intel_uncore_box *box)
{
        wrmsrl(NHM_UNC_PERF_GLOBAL_CTL, 0);
}

static void nhm_uncore_msr_enable_box(struct intel_uncore_box *box)
{
        wrmsrl(NHM_UNC_PERF_GLOBAL_CTL, NHM_UNC_GLOBAL_CTL_EN_PC_ALL | NHM_UNC_GLOBAL_CTL_EN_FC);
}

static void nhm_uncore_msr_enable_event(struct intel_uncore_box *box, struct perf_event *event)
{
        struct hw_perf_event *hwc = &event->hw;

        if (hwc->idx < UNCORE_PMC_IDX_FIXED)
                wrmsrl(hwc->config_base, hwc->config | SNB_UNC_CTL_EN);
        else
                wrmsrl(hwc->config_base, NHM_UNC_FIXED_CTR_CTL_EN);
}

static struct attribute *nhm_uncore_formats_attr[] = {
        &format_attr_event.attr,
        &format_attr_umask.attr,
        &format_attr_edge.attr,
        &format_attr_inv.attr,
        &format_attr_cmask8.attr,
        NULL,
};

static const struct attribute_group nhm_uncore_format_group = {
        .name = "format",
        .attrs = nhm_uncore_formats_attr,
};

static struct uncore_event_desc nhm_uncore_events[] = {
        INTEL_UNCORE_EVENT_DESC(clockticks,                "event=0xff,umask=0x00"),
        INTEL_UNCORE_EVENT_DESC(qmc_writes_full_any,       "event=0x2f,umask=0x0f"),
        INTEL_UNCORE_EVENT_DESC(qmc_normal_reads_any,      "event=0x2c,umask=0x0f"),
        INTEL_UNCORE_EVENT_DESC(qhl_request_ioh_reads,     "event=0x20,umask=0x01"),
        INTEL_UNCORE_EVENT_DESC(qhl_request_ioh_writes,    "event=0x20,umask=0x02"),
        INTEL_UNCORE_EVENT_DESC(qhl_request_remote_reads,  "event=0x20,umask=0x04"),
        INTEL_UNCORE_EVENT_DESC(qhl_request_remote_writes, "event=0x20,umask=0x08"),
        INTEL_UNCORE_EVENT_DESC(qhl_request_local_reads,   "event=0x20,umask=0x10"),
        INTEL_UNCORE_EVENT_DESC(qhl_request_local_writes,  "event=0x20,umask=0x20"),
        { /* end: all zeroes */ },
};

static struct intel_uncore_ops nhm_uncore_msr_ops = {
        .disable_box    = nhm_uncore_msr_disable_box,
        .enable_box     = nhm_uncore_msr_enable_box,
        .disable_event  = snb_uncore_msr_disable_event,
        .enable_event   = nhm_uncore_msr_enable_event,
        .read_counter   = uncore_msr_read_counter,
};

static struct intel_uncore_type nhm_uncore = {
        .name           = "",
        .num_counters   = 8,
        .num_boxes      = 1,
        .perf_ctr_bits  = 48,
        .fixed_ctr_bits = 48,
        .event_ctl      = NHM_UNC_PERFEVTSEL0,
        .perf_ctr       = NHM_UNC_UNCORE_PMC0,
        .fixed_ctr      = NHM_UNC_FIXED_CTR,
        .fixed_ctl      = NHM_UNC_FIXED_CTR_CTRL,
        .event_mask     = NHM_UNC_RAW_EVENT_MASK,
        .event_descs    = nhm_uncore_events,
        .ops            = &nhm_uncore_msr_ops,
        .format_group   = &nhm_uncore_format_group,
};

static struct intel_uncore_type *nhm_msr_uncores[] = {
        &nhm_uncore,
        NULL,
};

void nhm_uncore_cpu_init(void)
{
        uncore_msr_uncores = nhm_msr_uncores;
}

/* end of Nehalem uncore support */