io/fpc/fpc-kstats.c

	fpc-kstats.c revision ae53df47ce6510c89a72cb9868322dc60bce861b
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <sys/types.h>
#include <sys/sunddi.h>
#include <sys/sunndi.h>
#include <sys/kstat.h>
#include <fpc.h>

/*
 * CLEAR_PIC is needed by busstat to extract the current event type of a PIC.
 * There will be an entry for CLEAR_PIC in each fi_kev_mask_t table below, but
 * they are different from the other entries in that busstat won't show them to
 * the user.
 */
#define DEVICE_NAME_LEN     4
#define PIC_STR_LEN     12

/*
 * Data structure used to build array of event-names and pcr-mask values
 */
typedef struct fi_kev_mask {
    char        *event_name;
    uint64_t    pcr_mask;
} fi_kev_mask_t;

typedef struct fi_ksinfo {
    uint32_t    pic_num_events;
    uint32_t    pic_leaf_id;
    uint8_t     pic_sel_shift[NUM_MAX_COUNTERS];
    kstat_t     *pic_name_ksp[NUM_MAX_COUNTERS];
    kstat_t     *cntr_ksp;
    fire_perfcnt_t  pic_reg_group;
} fi_ksinfo_t;

static fi_ksinfo_t *fi_imu_kstats[NUM_LEAVES];
static fi_ksinfo_t *fi_mmu_kstats[NUM_LEAVES];
static fi_ksinfo_t *fi_tlu_kstats[NUM_LEAVES];
static fi_ksinfo_t *fi_lpu_kstats[NUM_LEAVES];
static fi_ksinfo_t *fi_jbc_kstat;

static int fpc_create_name_kstat(char *name, fi_ksinfo_t *pp, fi_kev_mask_t *ev,
    int base, int num_cntrs);
static void fpc_delete_name_kstat(fi_ksinfo_t *pp);
static kstat_t *fpc_create_cntr_kstat(char *name, int instance,
    int (*update)(kstat_t *, int), void *ksinfop, int num_pics);
static int fpc_cntr_kstat_update(kstat_t *ksp, int rw);
static int fpc_dev_kstat(fire_perfcnt_t reg_group, uint8_t num_inst);
static kstat_t *fpc_create_picN_kstat(char *mod_name, int pic,
    int pic_sel_shift, int num_ev, fi_kev_mask_t *ev_array);
/*
 * Below are event lists, which map an event name specified on the commandline
 * with a value to program the event register with.
 *
 * The last entry will be the mask of the entire event field for the PIC and
 * counter type.
 */

/*
 * JBC performance events.
 */
static fi_kev_mask_t
fire_jbc_events[] = {
    {JBC01_S_EVT_NONE,      JBC01_EVT_NONE},
    {JBC01_S_EVT_CLK,       JBC01_EVT_CLK},
    {JBC01_S_EVT_IDLE,      JBC01_EVT_IDLE},
    {JBC01_S_EVT_FIRE,      JBC01_EVT_FIRE},
    {JBC01_S_EVT_READ_LATENCY,  JBC01_EVT_READ_LATENCY},
    {JBC01_S_EVT_READ_SAMPLE,   JBC01_EVT_READ_SAMPLE},
    {JBC01_S_EVT_I2C_PIO,       JBC01_EVT_I2C_PIO},
    {JBC01_S_EVT_EBUS_PIO,      JBC01_EVT_EBUS_PIO},
    {JBC01_S_EVT_RINGA_PIO,     JBC01_EVT_RINGA_PIO},
    {JBC01_S_EVT_RINGB_PIO,     JBC01_EVT_RINGB_PIO},
    {JBC01_S_EVT_PARTIAL_WR,    JBC01_EVT_PARTIAL_WR},
    {JBC01_S_EVT_TOTAL_WR,      JBC01_EVT_TOTAL_WR},
    {JBC01_S_EVT_TOTAL_RD,      JBC01_EVT_TOTAL_RD},
    {JBC01_S_EVT_AOKOFF,        JBC01_EVT_AOKOFF},
    {JBC01_S_EVT_DOKOFF,        JBC01_EVT_DOKOFF},
    {JBC01_S_EVT_DAOKOFF,       JBC01_EVT_DAOKOFF},
    {JBC01_S_EVT_JBUS_COH_XACT, JBC01_EVT_JBUS_COH_XACT},
    {JBC01_S_EVT_FIRE_COH_XACT, JBC01_EVT_FIRE_COH_XACT},
    {JBC01_S_EVT_JBUS_NCOH_XACT,    JBC01_EVT_JBUS_NCOH_XACT},
    {JBC01_S_EVT_FGN_IO_HIT,    JBC01_EVT_FGN_IO_HIT},
    {JBC01_S_EVT_FIRE_WBS,      JBC01_EVT_FIRE_WBS},
    {JBC01_S_EVT_PCIEA_PIO_WR,  JBC01_EVT_PCIEA_PIO_WR},
    {JBC01_S_EVT_PCIEA_PIO_RD,  JBC01_EVT_PCIEA_PIO_RD},
    {JBC01_S_EVT_PCIEB_PIO_WR,  JBC01_EVT_PCIEB_PIO_WR},
    {JBC01_S_EVT_PCIEB_PIO_RD,  JBC01_EVT_PCIEB_PIO_RD},
    {COMMON_S_CLEAR_PIC,        JBC01_EVT_MASK}
};

/*
 * IMU performance events
 */
static fi_kev_mask_t
fire_imu_events[] = {
    {IMU01_S_EVT_NONE,      IMU01_EVT_NONE},
    {IMU01_S_EVT_CLK,       IMU01_EVT_CLK},
    {IMU01_S_EVT_MONDO,     IMU01_EVT_MONDO},
    {IMU01_S_EVT_MSI,       IMU01_EVT_MSI},
    {IMU01_S_EVT_MONDO_NAKS,    IMU01_EVT_MONDO_NAKS},
    {IMU01_S_EVT_EQ_WR,     IMU01_EVT_EQ_WR},
    {IMU01_S_EVT_EQ_MONDO,      IMU01_EVT_EQ_MONDO},
    {COMMON_S_CLEAR_PIC,        IMU01_EVT_MASK}
};

/*
 * MMU performance events
 */
static fi_kev_mask_t
fire_mmu_events[] = {
    {MMU01_S_EVT_NONE,      MMU01_EVT_NONE},
    {MMU01_S_EVT_CLK,       MMU01_EVT_CLK},
    {MMU01_S_EVT_TRANS,     MMU01_EVT_TRANSL},
    {MMU01_S_EVT_STALL,     MMU01_EVT_STALL},
    {MMU01_S_EVT_TRANSL_MISS,   MMU01_EVT_TRANSL_MISS},
    {MMU01_S_EVT_TBLWLK_STALL,  MMU01_EVT_TBLWLK_STALL},
    {MMU01_S_EVT_BYPASS_TRANSL, MMU01_EVT_BYPASS_TRANSL},
    {MMU01_S_EVT_TRANSL_TRANSL, MMU01_EVT_TRANSL_TRANSL},
    {MMU01_S_EVT_FLOW_CNTL_STALL,   MMU01_EVT_FLOW_CNTL_STALL},
    {MMU01_S_EVT_FLUSH_CACHE_ENT,   MMU01_EVT_FLUSH_CACHE_ENT},
    {COMMON_S_CLEAR_PIC,        MMU01_EVT_MASK}
};

/*
 * TLU performance events for counters 0 and 1
 */
static fi_kev_mask_t
fire_tlu_events[] = {
    {TLU01_S_EVT_NONE,          TLU01_EVT_NONE},
    {TLU01_S_EVT_CLK,           TLU01_EVT_CLK},
    {TLU01_S_EVT_COMPL,         TLU01_EVT_COMPL},
    {TLU01_S_EVT_XMT_POST_CR_UNAV,      TLU01_EVT_XMT_POST_CR_UNAV},
    {TLU01_S_EVT_XMT_NPOST_CR_UNAV,     TLU01_EVT_XMT_NPOST_CR_UNAV},
    {TLU01_S_EVT_XMT_CMPL_CR_UNAV,      TLU01_EVT_XMT_CMPL_CR_UNAV},
    {TLU01_S_EVT_XMT_ANY_CR_UNAV,       TLU01_EVT_XMT_ANY_CR_UNAV},
    {TLU01_S_EVT_RETRY_CR_UNAV,     TLU01_EVT_RETRY_CR_UNAV},
    {TLU01_S_EVT_MEMRD_PKT_RCVD,        TLU01_EVT_MEMRD_PKT_RCVD},
    {TLU01_S_EVT_MEMWR_PKT_RCVD,        TLU01_EVT_MEMWR_PKT_RCVD},
    {TLU01_S_EVT_RCV_CR_THRESH,     TLU01_EVT_RCV_CR_THRESH},
    {TLU01_S_EVT_RCV_PST_HDR_CR_EXH,    TLU01_EVT_RCV_PST_HDR_CR_EXH},
    {TLU01_S_EVT_RCV_PST_DA_CR_MPS,     TLU01_EVT_RCV_PST_DA_CR_MPS},
    {TLU01_S_EVT_RCV_NPST_HDR_CR_EXH,   TLU01_EVT_RCV_NPST_HDR_CR_EXH},
    {TLU01_S_EVT_RCVR_L0S,          TLU01_EVT_RCVR_L0S},
    {TLU01_S_EVT_RCVR_L0S_TRANS,        TLU01_EVT_RCVR_L0S_TRANS},
    {TLU01_S_EVT_XMTR_L0S,          TLU01_EVT_XMTR_L0S},
    {TLU01_S_EVT_XMTR_L0S_TRANS,        TLU01_EVT_XMTR_L0S_TRANS},
    {TLU01_S_EVT_RCVR_ERR,          TLU01_EVT_RCVR_ERR},
    {TLU01_S_EVT_BAD_TLP,           TLU01_EVT_BAD_TLP},
    {TLU01_S_EVT_BAD_DLLP,          TLU01_EVT_BAD_DLLP},
    {TLU01_S_EVT_REPLAY_ROLLOVER,       TLU01_EVT_REPLAY_ROLLOVER},
    {TLU01_S_EVT_REPLAY_TMO,        TLU01_EVT_REPLAY_TMO},
    {COMMON_S_CLEAR_PIC,            TLU01_EVT_MASK}
};

/*
 * TLU performance events for counter 2
 */
static fi_kev_mask_t
fire_tlu2_events[] = {
    {TLU2_S_EVT_NONE,           TLU2_EVT_NONE},
    {TLU2_S_EVT_NON_POST_COMPL_TIME,    TLU2_EVT_NON_POST_COMPL_TIME},
    {TLU2_S_EVT_XMT_DATA_WORD,      TLU2_EVT_XMT_DATA_WORD},
    {TLU2_S_EVT_RCVD_DATA_WORD,     TLU2_EVT_RCVD_DATA_WORD},
    {COMMON_S_CLEAR_PIC,            TLU2_EVT_MASK}
};

/*
 * LPU performance events
 */
static fi_kev_mask_t
fire_lpu_events[] = {
    {LPU12_S_EVT_RESET,     LPU12_EVT_RESET},
    {LPU12_S_EVT_TLP_RCVD,      LPU12_EVT_TLP_RCVD},
    {LPU12_S_EVT_DLLP_RCVD,     LPU12_EVT_DLLP_RCVD},
    {LPU12_S_EVT_ACK_DLLP_RCVD, LPU12_EVT_ACK_DLLP_RCVD},
    {LPU12_S_EVT_NAK_DLLP_RCVD, LPU12_EVT_NAK_DLLP_RCVD},
    {LPU12_S_EVT_RETRY_START,   LPU12_EVT_RETRY_START},
    {LPU12_S_EVT_REPLAY_TMO,    LPU12_EVT_REPLAY_TMO},
    {LPU12_S_EVT_ACK_NAK_LAT_TMO,   LPU12_EVT_ACK_NAK_LAT_TMO},
    {LPU12_S_EVT_BAD_DLLP,      LPU12_EVT_BAD_DLLP},
    {LPU12_S_EVT_BAD_TLP,       LPU12_EVT_BAD_TLP},
    {LPU12_S_EVT_NAK_DLLP_SENT, LPU12_EVT_NAK_DLLP_SENT},
    {LPU12_S_EVT_ACK_DLLP_SENT, LPU12_EVT_ACK_DLLP_SENT},
    {LPU12_S_EVT_RCVR_ERROR,    LPU12_EVT_RCVR_ERROR},
    {LPU12_S_EVT_LTSSM_RECOV_ENTRY, LPU12_EVT_LTSSM_RECOV_ENTRY},
    {LPU12_S_EVT_REPLAY_IN_PROG,    LPU12_EVT_REPLAY_IN_PROG},
    {LPU12_S_EVT_TLP_XMT_IN_PROG,   LPU12_EVT_TLP_XMT_IN_PROG},
    {LPU12_S_EVT_CLK_CYC,       LPU12_EVT_CLK_CYC},
    {LPU12_S_EVT_TLP_DLLP_XMT_PROG, LPU12_EVT_TLP_DLLP_XMT_PROG},
    {LPU12_S_EVT_TLP_DLLP_RCV_PROG, LPU12_EVT_TLP_DLLP_RCV_PROG},
    {COMMON_S_CLEAR_PIC,        LPU12_EVT_MASK}
};

int
fpc_kstat_init(dev_info_t *dip)
{
    fire_perfcnt_t i;
    int avail;
    uint8_t num_inst = 0;

    if (fpc_perfcnt_module_init(dip, &avail) != DDI_SUCCESS)
        return (DDI_FAILURE);

    if (avail & PCIE_A_REGS_AVAIL)
        num_inst++;
    if (avail & PCIE_B_REGS_AVAIL)
        num_inst++;

    for (i = jbc; i < MAX_REG_TYPES; i++) {
        if (i == jbc) {
            if (avail & JBUS_REGS_AVAIL) {
                if (fpc_dev_kstat(i, 1) != SUCCESS)
                    return (DDI_FAILURE);
            }
        } else {
            if (!num_inst)
                break;
            if (fpc_dev_kstat(i, num_inst) != SUCCESS)
                return (DDI_FAILURE);
        }
    }

    return (DDI_SUCCESS);
}

static int
fpc_dev_kstat(fire_perfcnt_t reg_group, uint8_t num_inst)
{
    int i, base_cntrid, num_cntrs;
    uint32_t num_events, num_events2;
    char dev_name[DEVICE_NAME_LEN];
    fi_ksinfo_t *ksinfop;
    fi_kev_mask_t *fire_events, *fire_events2;

    switch (reg_group) {
    case imu:
        (void) strncpy(dev_name, "imu", sizeof (dev_name));
        num_events = sizeof (fire_imu_events) / sizeof (fi_kev_mask_t);
        fire_events = fire_imu_events;
        num_cntrs = NUM_IMU_COUNTERS;
        break;
    case mmu:
        (void) strncpy(dev_name, "mmu", sizeof (dev_name));
        num_events = sizeof (fire_mmu_events) / sizeof (fi_kev_mask_t);
        fire_events = fire_mmu_events;
        num_cntrs = NUM_MMU_COUNTERS;
        break;
    case lpu:
        (void) strncpy(dev_name, "lpu", sizeof (dev_name));
        num_events = sizeof (fire_lpu_events) / sizeof (fi_kev_mask_t);
        fire_events = fire_lpu_events;
        num_cntrs = NUM_LPU_COUNTERS;
        break;
    case tlu:
        (void) strncpy(dev_name, "tlu", sizeof (dev_name));
        num_events = sizeof (fire_tlu_events) / sizeof (fi_kev_mask_t);
        num_events2 = sizeof (fire_tlu2_events) /
                    sizeof (fi_kev_mask_t);
        fire_events = fire_tlu_events;
        fire_events2 = fire_tlu2_events;
        num_cntrs = NUM_TLU_COUNTERS;
        break;
    case jbc:
        (void) strncpy(dev_name, "jbc", sizeof (dev_name));
        num_events = sizeof (fire_jbc_events) / sizeof (fi_kev_mask_t);
        fire_events = fire_jbc_events;
        num_cntrs = NUM_JBC_COUNTERS;
        break;
    default:
        return (FAILURE);
    }

    for (i = 0; i < num_inst; i++) {
        ksinfop = (fi_ksinfo_t *)kmem_zalloc(sizeof (fi_ksinfo_t),
                        KM_SLEEP);

        ksinfop->pic_num_events = num_events;
        ksinfop->pic_reg_group = reg_group;
        ksinfop->pic_leaf_id = i;
        ksinfop->pic_sel_shift[0] = PIC0_EVT_SEL_SHIFT;

        if (reg_group == lpu)
            ksinfop->pic_sel_shift[1] = PIC2_EVT_SEL_SHIFT;
        else
            ksinfop->pic_sel_shift[1] = PIC1_EVT_SEL_SHIFT;

        /*
         * All error cleanup (deleting kstats and freeing memory) is
         * done in fire_kstat_fini. So we need to save the ksinfop
         * pointer before any possible error exit so fire_kstat_fini
         * can find it.
         */
        if (reg_group == imu)
            fi_imu_kstats[i] = ksinfop;
        else if (reg_group == mmu)
            fi_mmu_kstats[i] = ksinfop;
        else if (reg_group == lpu)
            fi_lpu_kstats[i] = ksinfop;
        else if (reg_group == tlu)
            fi_tlu_kstats[i] = ksinfop;
        else if (reg_group == jbc)
            fi_jbc_kstat = ksinfop;

        /* Create basic pic event-type pair (only once) */
        if (i == 0) {
            base_cntrid = 0;

            /* The extra counter for TLU is handled separately */
            if (reg_group == tlu)
                num_cntrs--;

            if (fpc_create_name_kstat(dev_name, ksinfop,
                fire_events, base_cntrid, num_cntrs) != SUCCESS)
                goto err;

            /*
             * extra counter for TLU. The events associated with
             * this third counter are different from the events
             * for the first and second counters.
             */
            if (reg_group == tlu) {
                ksinfop->pic_sel_shift[2] = PIC2_EVT_SEL_SHIFT;
                base_cntrid += num_cntrs;
                num_cntrs = 1;
                ksinfop->pic_num_events = num_events2;
                if (fpc_create_name_kstat(dev_name, ksinfop,
                    fire_events2, base_cntrid, num_cntrs)
                    != SUCCESS)
                    goto err;

                num_cntrs = NUM_TLU_COUNTERS;
            }

        }

        /* create counter kstats */
        ksinfop->cntr_ksp = fpc_create_cntr_kstat(dev_name, i,
                fpc_cntr_kstat_update, ksinfop, num_cntrs);
        if (ksinfop->cntr_ksp == NULL)
            goto err;

    }
    return (SUCCESS);
err:
    return (FAILURE);

}

static int
fpc_create_name_kstat(char *name, fi_ksinfo_t *pp, fi_kev_mask_t *ev,
    int base, int num_cntrs)
{
    int i;

#ifdef DEBUG
    FPC_DBG2("fpc_create_name_kstat: name: %s\n", name);
#endif

    for (i = base; i < (base + num_cntrs); i++) {
        pp->pic_name_ksp[i] = fpc_create_picN_kstat(name, i,
            pp->pic_sel_shift[i], pp->pic_num_events, ev);

        if (pp->pic_name_ksp[i] == NULL)
            return (FAILURE);
    }
    return (SUCCESS);
}

/*
 * Create the picN kstat. Returns a pointer to the
 * kstat which the driver must store to allow it
 * to be deleted when necessary.
 */
static kstat_t *
fpc_create_picN_kstat(char *mod_name, int pic, int pic_sel_shift, int num_ev,
    fi_kev_mask_t *ev_array)
{
    int event;
    char pic_name[PIC_STR_LEN];
    kstat_t *picN_ksp = NULL;
    struct kstat_named *pic_named_data;

    (void) snprintf(pic_name, sizeof (pic_name), "pic%d", pic);
    if ((picN_ksp = kstat_create(mod_name, 0, pic_name,
        "bus", KSTAT_TYPE_NAMED, num_ev, NULL)) == NULL) {
        cmn_err(CE_WARN, "%s %s : kstat create failed",
            mod_name, pic_name);
        return (NULL);
    }

    pic_named_data = (struct kstat_named *)picN_ksp->ks_data;

    /*
     * Fill up data section of the kstat
     * Write event names and their associated pcr masks.
     * num_ev - 1 is because CLEAR_PIC is added separately.
     */
    for (event = 0; event < num_ev - 1; event++) {
        pic_named_data[event].value.ui64 =
            (ev_array[event].pcr_mask << pic_sel_shift);

        kstat_named_init(&pic_named_data[event],
            ev_array[event].event_name, KSTAT_DATA_UINT64);
    }

    /*
     * add the clear_pic entry
     */
    pic_named_data[event].value.ui64 =
            (uint64_t)~(ev_array[event].pcr_mask << pic_sel_shift);

    kstat_named_init(&pic_named_data[event], ev_array[event].event_name,
        KSTAT_DATA_UINT64);

    kstat_install(picN_ksp);

#ifdef DEBUG
    FPC_DBG2("fpc_create_picN_kstat: name %s, pic %d, num_ev %d, "
        "pic_sel_shift %d\n", mod_name, pic, num_ev, pic_sel_shift);
#endif

    return (picN_ksp);
}

/*
 * Create the "counters" kstat.
 */
static kstat_t *
fpc_create_cntr_kstat(char *name, int instance, int (*update)(kstat_t *, int),
    void *ksinfop, int num_pics)
{
    int i;
    char pic_str[PIC_STR_LEN];
    struct kstat *counters_ksp;
    struct kstat_named *counters_named_data;

#ifdef DEBUG
    FPC_DBG1("fpc_create_cntr_kstat: name: %s instance: %d\n",
        name, instance);
#endif

    /*
     * Size of kstat is num_pics + 1. extra one for pcr.
     */
    if ((counters_ksp = kstat_create(name, instance, "counters", "bus",
        KSTAT_TYPE_NAMED, num_pics + 1, KSTAT_FLAG_WRITABLE)) == NULL) {
        cmn_err(CE_WARN, "kstat_create for %s%d failed",
                        name, instance);
        return (NULL);
    }

    counters_named_data = (struct kstat_named *)(counters_ksp->ks_data);
    kstat_named_init(&counters_named_data[0], "pcr", KSTAT_DATA_UINT64);

    for (i = 0; i < num_pics; i++) {
        (void) snprintf(pic_str, sizeof (pic_str), "pic%d", i);

        kstat_named_init(&counters_named_data[i+1], pic_str,
            KSTAT_DATA_UINT64);
    }

    /*
     * Store the reg type and other info. in the kstat's private field
     * so that they are available to the update function.
     */
    counters_ksp->ks_private = (void *)ksinfop;
    counters_ksp->ks_update = update;

    kstat_install(counters_ksp);

    return (counters_ksp);
}

/*
 * kstat update function. Handles reads/writes
 * from/to kstat.
 */
static int
fpc_cntr_kstat_update(kstat_t *ksp, int rw)
{
    struct kstat_named *data_p;
    fi_ksinfo_t *ksinfop = ksp->ks_private;
    uint64_t counters[NUM_MAX_COUNTERS];
    uint64_t event;

    data_p = (struct kstat_named *)ksp->ks_data;

    if (rw == KSTAT_WRITE) {
#ifdef DEBUG
        FPC_DBG2("fpc_cntr_kstat_update: wr %ld\n",
            data_p[0].value.ui64);
#endif

        if (fpc_perfcnt_program(ksinfop->pic_leaf_id,
            ksinfop->pic_reg_group, data_p[0].value.ui64) != SUCCESS)
            return (EIO);
    } else {
        counters[2] = 0;
        if (fpc_perfcnt_read(ksinfop->pic_leaf_id,
            ksinfop->pic_reg_group, &event, counters) != SUCCESS)
            return (EIO);

        data_p[0].value.ui64 = event;
        data_p[1].value.ui64 = counters[0];
        data_p[2].value.ui64 = counters[1];

        if (ksinfop->pic_reg_group == tlu) {
            data_p[3].value.ui64 = counters[2];
        }
#ifdef DEBUG
        FPC_DBG2("fpc_cntr_kstat_update: rd event %ld, cntr0"
            " %ld, cntr1 %ld, cntr2 %ld\n", data_p[0].value.ui64,
            counters[0], counters[1], counters[2]);
#endif
    }
    return (0);
}

void
fpc_kstat_fini(dev_info_t *dip)
{
    int i;

#ifdef DEBUG
    FPC_DBG1("fpc_kstat_fini called\n");
#endif

    for (i = 0; i < NUM_LEAVES; i++) {
        /* IMU */
        if (fi_imu_kstats[i] != NULL) {
            fpc_delete_name_kstat(fi_imu_kstats[i]);
            if (fi_imu_kstats[i]->cntr_ksp != NULL)
                kstat_delete(fi_imu_kstats[i]->cntr_ksp);
            kmem_free(fi_imu_kstats[i], sizeof (fi_ksinfo_t));
            fi_imu_kstats[i] = NULL;
        }

        /* MMU */
        if (fi_mmu_kstats[i] != NULL) {
            fpc_delete_name_kstat(fi_mmu_kstats[i]);
            if (fi_mmu_kstats[i]->cntr_ksp != NULL)
                kstat_delete(fi_mmu_kstats[i]->cntr_ksp);
            kmem_free(fi_mmu_kstats[i], sizeof (fi_ksinfo_t));
            fi_mmu_kstats[i] = NULL;
        }

        /* LPU */
        if (fi_lpu_kstats[i] != NULL) {
            fpc_delete_name_kstat(fi_lpu_kstats[i]);
            if (fi_lpu_kstats[i]->cntr_ksp != NULL)
                kstat_delete(fi_lpu_kstats[i]->cntr_ksp);
            kmem_free(fi_lpu_kstats[i], sizeof (fi_ksinfo_t));
            fi_lpu_kstats[i] = NULL;
        }

        /* TLU */
        if (fi_tlu_kstats[i] != NULL) {
            fpc_delete_name_kstat(fi_tlu_kstats[i]);
            if (fi_tlu_kstats[i]->cntr_ksp != NULL)
                kstat_delete(fi_tlu_kstats[i]->cntr_ksp);
            kmem_free(fi_tlu_kstats[i], sizeof (fi_ksinfo_t));
            fi_tlu_kstats[i] = NULL;
        }
    }

    /* JBC */
    if (fi_jbc_kstat != NULL) {
        fpc_delete_name_kstat(fi_jbc_kstat);
        if (fi_jbc_kstat->cntr_ksp != NULL)
            kstat_delete(fi_jbc_kstat->cntr_ksp);
        kmem_free(fi_jbc_kstat, sizeof (fi_ksinfo_t));
        fi_jbc_kstat = NULL;
    }

    (void) fpc_perfcnt_module_fini(dip);
}

static void
fpc_delete_name_kstat(fi_ksinfo_t *pp)
{
    int i;

    if (pp != NULL) {
        for (i = 0; i < NUM_MAX_COUNTERS; i++) {
            if (pp->pic_name_ksp[i] != NULL)
                kstat_delete(pp->pic_name_ksp[i]);
        }
    }
}