/*
 * Copyright (c) 2009-2015 Solarflare Communications Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are
 * those of the authors and should not be interpreted as representing official
 * policies, either expressed or implied, of the FreeBSD Project.
 */

#include "efx.h"
#include "efx_impl.h"

#if EFSYS_OPT_MON_MCDI

#if EFSYS_OPT_MON_STATS

#define MCDI_MON_NEXT_PAGE  (uint16_t)0xfffe
#define MCDI_MON_INVALID_SENSOR (uint16_t)0xfffd
#define MCDI_MON_PAGE_SIZE 0x20

/* Bitmasks of valid port(s) for each sensor */
#define MCDI_MON_PORT_NONE      (0x00)
#define MCDI_MON_PORT_P1        (0x01)
#define MCDI_MON_PORT_P2        (0x02)
#define MCDI_MON_PORT_P3        (0x04)
#define MCDI_MON_PORT_P4        (0x08)
#define MCDI_MON_PORT_Px        (0xFFFF)

/* Entry for MCDI sensor in sensor map */
#define STAT(portmask, stat)    \
        { (MCDI_MON_PORT_##portmask), (EFX_MON_STAT_##stat) }

/* Entry for sensor next page flag in sensor map */
#define STAT_NEXT_PAGE()        \
        { MCDI_MON_PORT_NONE, MCDI_MON_NEXT_PAGE }

/* Placeholder for gaps in the array */
#define STAT_NO_SENSOR()        \
        { MCDI_MON_PORT_NONE, MCDI_MON_INVALID_SENSOR }

/* Map from MC sensors to monitor statistics */
static const struct mcdi_sensor_map_s {
        uint16_t        msm_port_mask;
        uint16_t        msm_stat;
} mcdi_sensor_map[] = {
        /* Sensor page 0                MC_CMD_SENSOR_xxx */
        STAT(Px, INT_TEMP),             /* 0x00 CONTROLLER_TEMP */
        STAT(Px, EXT_TEMP),             /* 0x01 PHY_COMMON_TEMP */
        STAT(Px, INT_COOLING),          /* 0x02 CONTROLLER_COOLING */
        STAT(P1, EXT_TEMP),             /* 0x03 PHY0_TEMP */
        STAT(P1, EXT_COOLING),          /* 0x04 PHY0_COOLING */
        STAT(P2, EXT_TEMP),             /* 0x05 PHY1_TEMP */
        STAT(P2, EXT_COOLING),          /* 0x06 PHY1_COOLING */
        STAT(Px, 1V),                   /* 0x07 IN_1V0 */
        STAT(Px, 1_2V),                 /* 0x08 IN_1V2 */
        STAT(Px, 1_8V),                 /* 0x09 IN_1V8 */
        STAT(Px, 2_5V),                 /* 0x0a IN_2V5 */
        STAT(Px, 3_3V),                 /* 0x0b IN_3V3 */
        STAT(Px, 12V),                  /* 0x0c IN_12V0 */
        STAT(Px, 1_2VA),                /* 0x0d IN_1V2A */
        STAT(Px, VREF),                 /* 0x0e IN_VREF */
        STAT(Px, VAOE),                 /* 0x0f OUT_VAOE */
        STAT(Px, AOE_TEMP),             /* 0x10 AOE_TEMP */
        STAT(Px, PSU_AOE_TEMP),         /* 0x11 PSU_AOE_TEMP */
        STAT(Px, PSU_TEMP),             /* 0x12 PSU_TEMP */
        STAT(Px, FAN0),                 /* 0x13 FAN_0 */
        STAT(Px, FAN1),                 /* 0x14 FAN_1 */
        STAT(Px, FAN2),                 /* 0x15 FAN_2 */
        STAT(Px, FAN3),                 /* 0x16 FAN_3 */
        STAT(Px, FAN4),                 /* 0x17 FAN_4 */
        STAT(Px, VAOE_IN),              /* 0x18 IN_VAOE */
        STAT(Px, IAOE),                 /* 0x19 OUT_IAOE */
        STAT(Px, IAOE_IN),              /* 0x1a IN_IAOE */
        STAT(Px, NIC_POWER),            /* 0x1b NIC_POWER */
        STAT(Px, 0_9V),                 /* 0x1c IN_0V9 */
        STAT(Px, I0_9V),                /* 0x1d IN_I0V9 */
        STAT(Px, I1_2V),                /* 0x1e IN_I1V2 */
        STAT_NEXT_PAGE(),               /* 0x1f Next page flag (not a sensor) */

        /* Sensor page 1                MC_CMD_SENSOR_xxx */
        STAT(Px, 0_9V_ADC),             /* 0x20 IN_0V9_ADC */
        STAT(Px, INT_TEMP2),            /* 0x21 CONTROLLER_2_TEMP */
        STAT(Px, VREG_TEMP),            /* 0x22 VREG_INTERNAL_TEMP */
        STAT(Px, VREG_0_9V_TEMP),       /* 0x23 VREG_0V9_TEMP */
        STAT(Px, VREG_1_2V_TEMP),       /* 0x24 VREG_1V2_TEMP */
        STAT(Px, INT_VPTAT),            /* 0x25 CTRLR. VPTAT */
        STAT(Px, INT_ADC_TEMP),         /* 0x26 CTRLR. INTERNAL_TEMP */
        STAT(Px, EXT_VPTAT),            /* 0x27 CTRLR. VPTAT_EXTADC */
        STAT(Px, EXT_ADC_TEMP),         /* 0x28 CTRLR. INTERNAL_TEMP_EXTADC */
        STAT(Px, AMBIENT_TEMP),         /* 0x29 AMBIENT_TEMP */
        STAT(Px, AIRFLOW),              /* 0x2a AIRFLOW */
        STAT(Px, VDD08D_VSS08D_CSR),    /* 0x2b VDD08D_VSS08D_CSR */
        STAT(Px, VDD08D_VSS08D_CSR_EXTADC), /* 0x2c VDD08D_VSS08D_CSR_EXTADC */
        STAT(Px, HOTPOINT_TEMP),        /* 0x2d HOTPOINT_TEMP */
        STAT(P1, PHY_POWER_SWITCH_PORT0),   /* 0x2e PHY_POWER_SWITCH_PORT0 */
        STAT(P2, PHY_POWER_SWITCH_PORT1),   /* 0x2f PHY_POWER_SWITCH_PORT1 */
        STAT(Px, MUM_VCC),              /* 0x30 MUM_VCC */
        STAT(Px, 0V9_A),                /* 0x31 0V9_A */
        STAT(Px, I0V9_A),               /* 0x32 I0V9_A */
        STAT(Px, 0V9_A_TEMP),           /* 0x33 0V9_A_TEMP */
        STAT(Px, 0V9_B),                /* 0x34 0V9_B */
        STAT(Px, I0V9_B),               /* 0x35 I0V9_B */
        STAT(Px, 0V9_B_TEMP),           /* 0x36 0V9_B_TEMP */
        STAT(Px, CCOM_AVREG_1V2_SUPPLY),  /* 0x37 CCOM_AVREG_1V2_SUPPLY */
        STAT(Px, CCOM_AVREG_1V2_SUPPLY_EXT_ADC),
                                        /* 0x38 CCOM_AVREG_1V2_SUPPLY_EXT_ADC */
        STAT(Px, CCOM_AVREG_1V8_SUPPLY),  /* 0x39 CCOM_AVREG_1V8_SUPPLY */
        STAT(Px, CCOM_AVREG_1V8_SUPPLY_EXT_ADC),
                                        /* 0x3a CCOM_AVREG_1V8_SUPPLY_EXT_ADC */
        STAT_NO_SENSOR(),               /* 0x3b (no sensor) */
        STAT_NO_SENSOR(),               /* 0x3c (no sensor) */
        STAT_NO_SENSOR(),               /* 0x3d (no sensor) */
        STAT_NO_SENSOR(),               /* 0x3e (no sensor) */
        STAT_NEXT_PAGE(),               /* 0x3f Next page flag (not a sensor) */

        /* Sensor page 2                MC_CMD_SENSOR_xxx */
        STAT(Px, CONTROLLER_MASTER_VPTAT),         /* 0x40 MASTER_VPTAT */
        STAT(Px, CONTROLLER_MASTER_INTERNAL_TEMP), /* 0x41 MASTER_INT_TEMP */
        STAT(Px, CONTROLLER_MASTER_VPTAT_EXT_ADC), /* 0x42 MAST_VPTAT_EXT_ADC */
        STAT(Px, CONTROLLER_MASTER_INTERNAL_TEMP_EXT_ADC),
                                        /* 0x43 MASTER_INTERNAL_TEMP_EXT_ADC */
        STAT(Px, CONTROLLER_SLAVE_VPTAT),         /* 0x44 SLAVE_VPTAT */
        STAT(Px, CONTROLLER_SLAVE_INTERNAL_TEMP), /* 0x45 SLAVE_INTERNAL_TEMP */
        STAT(Px, CONTROLLER_SLAVE_VPTAT_EXT_ADC), /* 0x46 SLAVE_VPTAT_EXT_ADC */
        STAT(Px, CONTROLLER_SLAVE_INTERNAL_TEMP_EXT_ADC),
                                        /* 0x47 SLAVE_INTERNAL_TEMP_EXT_ADC */
        STAT_NO_SENSOR(),               /* 0x48 (no sensor) */
        STAT(Px, SODIMM_VOUT),          /* 0x49 SODIMM_VOUT */
        STAT(Px, SODIMM_0_TEMP),        /* 0x4a SODIMM_0_TEMP */
        STAT(Px, SODIMM_1_TEMP),        /* 0x4b SODIMM_1_TEMP */
        STAT(Px, PHY0_VCC),             /* 0x4c PHY0_VCC */
        STAT(Px, PHY1_VCC),             /* 0x4d PHY1_VCC */
        STAT(Px, CONTROLLER_TDIODE_TEMP), /* 0x4e CONTROLLER_TDIODE_TEMP */
        STAT(Px, BOARD_FRONT_TEMP),     /* 0x4f BOARD_FRONT_TEMP */
        STAT(Px, BOARD_BACK_TEMP),      /* 0x50 BOARD_BACK_TEMP */
};

#define MCDI_STATIC_SENSOR_ASSERT(_field)                               \
        EFX_STATIC_ASSERT(MC_CMD_SENSOR_STATE_ ## _field                \
                            == EFX_MON_STAT_STATE_ ## _field)

static                                          void
mcdi_mon_decode_stats(
        __in                                    efx_nic_t *enp,
        __in_ecount(sensor_mask_size)           uint32_t *sensor_mask,
        __in                                    size_t sensor_mask_size,
        __in_opt                                efsys_mem_t *esmp,
        __out_ecount_opt(sensor_mask_size)      uint32_t *stat_maskp,
        __inout_ecount_opt(EFX_MON_NSTATS)      efx_mon_stat_value_t *stat)
{
        efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
        uint16_t port_mask;
        uint16_t sensor;
        size_t sensor_max;
        uint32_t stat_mask[(EFX_ARRAY_SIZE(mcdi_sensor_map) + 31) / 32];
        uint32_t idx = 0;
        uint32_t page = 0;

        /* Assert the MC_CMD_SENSOR and EFX_MON_STATE namespaces agree */
        MCDI_STATIC_SENSOR_ASSERT(OK);
        MCDI_STATIC_SENSOR_ASSERT(WARNING);
        MCDI_STATIC_SENSOR_ASSERT(FATAL);
        MCDI_STATIC_SENSOR_ASSERT(BROKEN);
        MCDI_STATIC_SENSOR_ASSERT(NO_READING);

        EFX_STATIC_ASSERT(sizeof (stat_mask[0]) * 8 ==
            EFX_MON_MASK_ELEMENT_SIZE);
        sensor_max =
            MIN((8 * sensor_mask_size), EFX_ARRAY_SIZE(mcdi_sensor_map));

        port_mask = 1U << emip->emi_port;

        (void) memset(stat_mask, 0, sizeof (stat_mask));

        /*
         * The MCDI sensor readings in the DMA buffer are a packed array of
         * MC_CMD_SENSOR_VALUE_ENTRY structures, which only includes entries for
         * supported sensors (bit set in sensor_mask). The sensor_mask and
         * sensor readings do not include entries for the per-page NEXT_PAGE
         * flag.
         *
         * sensor_mask may legitimately contain MCDI sensors that the driver
         * does not understand.
         */
        for (sensor = 0; sensor < sensor_max; ++sensor) {
                efx_mon_stat_t id = mcdi_sensor_map[sensor].msm_stat;

                if ((sensor % MCDI_MON_PAGE_SIZE) == MC_CMD_SENSOR_PAGE0_NEXT) {
                        EFSYS_ASSERT3U(id, ==, MCDI_MON_NEXT_PAGE);
                        page++;
                        continue;
                }
                if (~(sensor_mask[page]) & (1U << sensor))
                        continue;
                idx++;

                if ((port_mask & mcdi_sensor_map[sensor].msm_port_mask) == 0)
                        continue;
                EFSYS_ASSERT(id < EFX_MON_NSTATS);

                /*
                 * stat_mask is a bitmask indexed by EFX_MON_* monitor statistic
                 * identifiers from efx_mon_stat_t (without NEXT_PAGE bits).
                 *
                 * If there is an entry in the MCDI sensor to monitor statistic
                 * map then the sensor reading is used for the value of the
                 * monitor statistic.
                 */
                stat_mask[id / EFX_MON_MASK_ELEMENT_SIZE] |=
                    (1U << (id % EFX_MON_MASK_ELEMENT_SIZE));

                if (stat != NULL && esmp != NULL && !EFSYS_MEM_IS_NULL(esmp)) {
                        efx_dword_t dword;

                        /* Get MCDI sensor reading from DMA buffer */
                        EFSYS_MEM_READD(esmp, 4 * (idx - 1), &dword);

                        /* Update EFX monitor stat from MCDI sensor reading */
                        stat[id].emsv_value = (uint16_t)EFX_DWORD_FIELD(dword,
                            MC_CMD_SENSOR_VALUE_ENTRY_TYPEDEF_VALUE);

                        stat[id].emsv_state = (uint16_t)EFX_DWORD_FIELD(dword,
                            MC_CMD_SENSOR_VALUE_ENTRY_TYPEDEF_STATE);
                }
        }

        if (stat_maskp != NULL) {
                (void) memcpy(stat_maskp, stat_mask, sizeof (stat_mask));
        }
}

        __checkReturn                   efx_rc_t
mcdi_mon_ev(
        __in                            efx_nic_t *enp,
        __in                            efx_qword_t *eqp,
        __out                           efx_mon_stat_t *idp,
        __out                           efx_mon_stat_value_t *valuep)
{
        efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
        efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
        uint16_t port_mask;
        uint16_t sensor;
        uint16_t state;
        uint16_t value;
        efx_mon_stat_t id;
        efx_rc_t rc;

        port_mask = (emip->emi_port == 1)
            ? MCDI_MON_PORT_P1
            : MCDI_MON_PORT_P2;

        sensor = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_MONITOR);
        state = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_STATE);
        value = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_VALUE);

        /* Hardware must support this MCDI sensor */
        EFSYS_ASSERT3U(sensor, <, (8 * encp->enc_mcdi_sensor_mask_size));
        EFSYS_ASSERT((sensor % MCDI_MON_PAGE_SIZE) != MC_CMD_SENSOR_PAGE0_NEXT);
        EFSYS_ASSERT(encp->enc_mcdi_sensor_maskp != NULL);
        EFSYS_ASSERT((encp->enc_mcdi_sensor_maskp[sensor / MCDI_MON_PAGE_SIZE] &
                (1U << (sensor % MCDI_MON_PAGE_SIZE))) != 0);

        /* But we don't have to understand it */
        if (sensor >= EFX_ARRAY_SIZE(mcdi_sensor_map)) {
                rc = ENOTSUP;
                goto fail1;
        }
        id = mcdi_sensor_map[sensor].msm_stat;
        if ((port_mask & mcdi_sensor_map[sensor].msm_port_mask) == 0)
                return (ENODEV);
        EFSYS_ASSERT(id < EFX_MON_NSTATS);

        *idp = id;
        valuep->emsv_value = value;
        valuep->emsv_state = state;

        return (0);

fail1:
        EFSYS_PROBE1(fail1, efx_rc_t, rc);

        return (rc);
}


static  __checkReturn   efx_rc_t
efx_mcdi_read_sensors(
        __in            efx_nic_t *enp,
        __in            efsys_mem_t *esmp,
        __in            uint32_t size)
{
        efx_mcdi_req_t req;
        uint8_t payload[MAX(MC_CMD_READ_SENSORS_EXT_IN_LEN,
                            MC_CMD_READ_SENSORS_EXT_OUT_LEN)];
        uint32_t addr_lo, addr_hi;

        req.emr_cmd = MC_CMD_READ_SENSORS;
        req.emr_in_buf = payload;
        req.emr_in_length = MC_CMD_READ_SENSORS_EXT_IN_LEN;
        req.emr_out_buf = payload;
        req.emr_out_length = MC_CMD_READ_SENSORS_EXT_OUT_LEN;

        addr_lo = (uint32_t)(EFSYS_MEM_ADDR(esmp) & 0xffffffff);
        addr_hi = (uint32_t)(EFSYS_MEM_ADDR(esmp) >> 32);

        MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_DMA_ADDR_LO, addr_lo);
        MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_DMA_ADDR_HI, addr_hi);
        MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_LENGTH, size);

        efx_mcdi_execute(enp, &req);

        return (req.emr_rc);
}

static  __checkReturn   efx_rc_t
efx_mcdi_sensor_info_npages(
        __in            efx_nic_t *enp,
        __out           uint32_t *npagesp)
{
        efx_mcdi_req_t req;
        uint8_t payload[MAX(MC_CMD_SENSOR_INFO_EXT_IN_LEN,
                            MC_CMD_SENSOR_INFO_OUT_LENMAX)];
        int page;
        efx_rc_t rc;

        EFSYS_ASSERT(npagesp != NULL);

        page = 0;
        do {
                (void) memset(payload, 0, sizeof (payload));
                req.emr_cmd = MC_CMD_SENSOR_INFO;
                req.emr_in_buf = payload;
                req.emr_in_length = MC_CMD_SENSOR_INFO_EXT_IN_LEN;
                req.emr_out_buf = payload;
                req.emr_out_length = MC_CMD_SENSOR_INFO_OUT_LENMAX;

                MCDI_IN_SET_DWORD(req, SENSOR_INFO_EXT_IN_PAGE, page++);

                efx_mcdi_execute_quiet(enp, &req);

                if (req.emr_rc != 0) {
                        rc = req.emr_rc;
                        goto fail1;
                }
        } while (MCDI_OUT_DWORD(req, SENSOR_INFO_OUT_MASK) &
            (1U << MC_CMD_SENSOR_PAGE0_NEXT));

        *npagesp = page;

        return (0);

fail1:
        EFSYS_PROBE1(fail1, efx_rc_t, rc);

        return (rc);
}

static  __checkReturn           efx_rc_t
efx_mcdi_sensor_info(
        __in                    efx_nic_t *enp,
        __out_ecount(npages)    uint32_t *sensor_maskp,
        __in                    size_t npages)
{
        efx_mcdi_req_t req;
        uint8_t payload[MAX(MC_CMD_SENSOR_INFO_EXT_IN_LEN,
                            MC_CMD_SENSOR_INFO_OUT_LENMAX)];
        uint32_t page;
        efx_rc_t rc;

        EFSYS_ASSERT(sensor_maskp != NULL);

        for (page = 0; page < npages; page++) {
                uint32_t mask;

                (void) memset(payload, 0, sizeof (payload));
                req.emr_cmd = MC_CMD_SENSOR_INFO;
                req.emr_in_buf = payload;
                req.emr_in_length = MC_CMD_SENSOR_INFO_EXT_IN_LEN;
                req.emr_out_buf = payload;
                req.emr_out_length = MC_CMD_SENSOR_INFO_OUT_LENMAX;

                MCDI_IN_SET_DWORD(req, SENSOR_INFO_EXT_IN_PAGE, page);

                efx_mcdi_execute(enp, &req);

                if (req.emr_rc != 0) {
                        rc = req.emr_rc;
                        goto fail1;
                }

                mask = MCDI_OUT_DWORD(req, SENSOR_INFO_OUT_MASK);

                if ((page != (npages - 1)) &&
                    ((mask & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) == 0)) {
                        rc = EINVAL;
                        goto fail2;
                }
                sensor_maskp[page] = mask;
        }

        if (sensor_maskp[npages - 1] & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) {
                rc = EINVAL;
                goto fail3;
        }

        return (0);

fail3:
        EFSYS_PROBE(fail3);
fail2:
        EFSYS_PROBE(fail2);
fail1:
        EFSYS_PROBE1(fail1, efx_rc_t, rc);

        return (rc);
}

        __checkReturn                   efx_rc_t
mcdi_mon_stats_update(
        __in                            efx_nic_t *enp,
        __in                            efsys_mem_t *esmp,
        __inout_ecount(EFX_MON_NSTATS)  efx_mon_stat_value_t *values)
{
        efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
        uint32_t size = encp->enc_mon_stat_dma_buf_size;
        efx_rc_t rc;

        if ((rc = efx_mcdi_read_sensors(enp, esmp, size)) != 0)
                goto fail1;

        EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, size);

        mcdi_mon_decode_stats(enp,
            encp->enc_mcdi_sensor_maskp,
            encp->enc_mcdi_sensor_mask_size,
            esmp, NULL, values);

        return (0);

fail1:
        EFSYS_PROBE1(fail1, efx_rc_t, rc);

        return (rc);
}

        __checkReturn   efx_rc_t
mcdi_mon_cfg_build(
        __in            efx_nic_t *enp)
{
        efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
        uint32_t npages;
        efx_rc_t rc;

        switch (enp->en_family) {
#if EFSYS_OPT_SIENA
        case EFX_FAMILY_SIENA:
                encp->enc_mon_type = EFX_MON_SFC90X0;
                break;
#endif
#if EFSYS_OPT_HUNTINGTON
        case EFX_FAMILY_HUNTINGTON:
                encp->enc_mon_type = EFX_MON_SFC91X0;
                break;
#endif
#if EFSYS_OPT_MEDFORD
        case EFX_FAMILY_MEDFORD:
                encp->enc_mon_type = EFX_MON_SFC92X0;
                break;
#endif
        default:
                rc = EINVAL;
                goto fail1;
        }

        /* Get mc sensor mask size */
        npages = 0;
        if ((rc = efx_mcdi_sensor_info_npages(enp, &npages)) != 0)
                goto fail2;

        encp->enc_mon_stat_dma_buf_size = npages * EFX_MON_STATS_PAGE_SIZE;
        encp->enc_mcdi_sensor_mask_size = npages * sizeof (uint32_t);

        /* Allocate mc sensor mask */
        EFSYS_KMEM_ALLOC(enp->en_esip,
            encp->enc_mcdi_sensor_mask_size,
            encp->enc_mcdi_sensor_maskp);

        if (encp->enc_mcdi_sensor_maskp == NULL) {
                rc = ENOMEM;
                goto fail3;
        }

        /* Read mc sensor mask */
        if ((rc = efx_mcdi_sensor_info(enp,
                    encp->enc_mcdi_sensor_maskp,
                    npages)) != 0)
                goto fail4;

        /* Build monitor statistics mask */
        mcdi_mon_decode_stats(enp,
            encp->enc_mcdi_sensor_maskp,
            encp->enc_mcdi_sensor_mask_size,
            NULL, encp->enc_mon_stat_mask, NULL);

        return (0);

fail4:
        EFSYS_PROBE(fail4);
        EFSYS_KMEM_FREE(enp->en_esip,
            encp->enc_mcdi_sensor_mask_size,
            encp->enc_mcdi_sensor_maskp);

fail3:
        EFSYS_PROBE(fail3);

fail2:
        EFSYS_PROBE(fail2);

fail1:
        EFSYS_PROBE1(fail1, efx_rc_t, rc);

        return (rc);
}

                        void
mcdi_mon_cfg_free(
        __in            efx_nic_t *enp)
{
        efx_nic_cfg_t *encp = &(enp->en_nic_cfg);

        if (encp->enc_mcdi_sensor_maskp != NULL) {
                EFSYS_KMEM_FREE(enp->en_esip,
                    encp->enc_mcdi_sensor_mask_size,
                    encp->enc_mcdi_sensor_maskp);
        }
}


#endif  /* EFSYS_OPT_MON_STATS */

#endif  /* EFSYS_OPT_MON_MCDI */