sfxge/common/ef10_ev.c

/*
 * Copyright (c) 2012-2015 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_STATS
#include "mcdi_mon.h"
#endif

#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD

#if EFSYS_OPT_QSTATS
#define EFX_EV_QSTAT_INCR(_eep, _stat)                  \
    do {                                \
        (_eep)->ee_stat[_stat]++;               \
    _NOTE(CONSTANTCONDITION)                    \
    } while (B_FALSE)
#else
#define EFX_EV_QSTAT_INCR(_eep, _stat)
#endif


static  __checkReturn   boolean_t
ef10_ev_rx(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg);

static  __checkReturn   boolean_t
ef10_ev_tx(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg);

static  __checkReturn   boolean_t
ef10_ev_driver(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg);

static  __checkReturn   boolean_t
ef10_ev_drv_gen(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg);

static  __checkReturn   boolean_t
ef10_ev_mcdi(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg);


static  __checkReturn   efx_rc_t
efx_mcdi_init_evq(
    __in        efx_nic_t *enp,
    __in        unsigned int instance,
    __in        efsys_mem_t *esmp,
    __in        size_t nevs,
    __in        uint32_t irq,
    __out_opt   uint32_t *irqp)
{
    efx_mcdi_req_t req;
    uint8_t payload[
        MAX(MC_CMD_INIT_EVQ_IN_LEN(EFX_EVQ_NBUFS(EFX_EVQ_MAXNEVS)),
        MC_CMD_INIT_EVQ_OUT_LEN)];
    efx_qword_t *dma_addr;
    uint64_t addr;
    int npages;
    int i;
    int supports_rx_batching;
    efx_rc_t rc;

    npages = EFX_EVQ_NBUFS(nevs);
    if (MC_CMD_INIT_EVQ_IN_LEN(npages) > MC_CMD_INIT_EVQ_IN_LENMAX) {
        rc = EINVAL;
        goto fail1;
    }

    (void) memset(payload, 0, sizeof (payload));
    req.emr_cmd = MC_CMD_INIT_EVQ;
    req.emr_in_buf = payload;
    req.emr_in_length = MC_CMD_INIT_EVQ_IN_LEN(npages);
    req.emr_out_buf = payload;
    req.emr_out_length = MC_CMD_INIT_EVQ_OUT_LEN;

    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_SIZE, nevs);
    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_INSTANCE, instance);
    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_IRQ_NUM, irq);

    /*
     * On Huntington RX and TX event batching can only be requested
     * together (even if the datapath firmware doesn't actually support RX
     * batching).
     * Cut through is incompatible with RX batching and so enabling cut
     * through disables RX batching (but it does not affect TX batching).
     *
     * So always enable RX and TX event batching, and enable cut through
     * if RX event batching isn't supported (i.e. on low latency firmware).
     */
    supports_rx_batching = enp->en_nic_cfg.enc_rx_batching_enabled ? 1 : 0;
    MCDI_IN_POPULATE_DWORD_6(req, INIT_EVQ_IN_FLAGS,
        INIT_EVQ_IN_FLAG_INTERRUPTING, 1,
        INIT_EVQ_IN_FLAG_RPTR_DOS, 0,
        INIT_EVQ_IN_FLAG_INT_ARMD, 0,
        INIT_EVQ_IN_FLAG_CUT_THRU, !supports_rx_batching,
        INIT_EVQ_IN_FLAG_RX_MERGE, 1,
        INIT_EVQ_IN_FLAG_TX_MERGE, 1);

    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_TMR_MODE,
        MC_CMD_INIT_EVQ_IN_TMR_MODE_DIS);
    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_TMR_LOAD, 0);
    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_TMR_RELOAD, 0);

    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_COUNT_MODE,
        MC_CMD_INIT_EVQ_IN_COUNT_MODE_DIS);
    MCDI_IN_SET_DWORD(req, INIT_EVQ_IN_COUNT_THRSHLD, 0);

    dma_addr = MCDI_IN2(req, efx_qword_t, INIT_EVQ_IN_DMA_ADDR);
    addr = EFSYS_MEM_ADDR(esmp);

    for (i = 0; i < npages; i++) {
        EFX_POPULATE_QWORD_2(*dma_addr,
            EFX_DWORD_1, (uint32_t)(addr >> 32),
            EFX_DWORD_0, (uint32_t)(addr & 0xffffffff));

        dma_addr++;
        addr += EFX_BUF_SIZE;
    }

    efx_mcdi_execute(enp, &req);

    if (req.emr_rc != 0) {
        rc = req.emr_rc;
        goto fail2;
    }

    if (req.emr_out_length_used < MC_CMD_INIT_EVQ_OUT_LEN) {
        rc = EMSGSIZE;
        goto fail3;
    }

    if (irqp != NULL)
        *irqp = MCDI_OUT_DWORD(req, INIT_EVQ_OUT_IRQ);

    return (0);

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

    return (rc);
}

static  __checkReturn   efx_rc_t
efx_mcdi_fini_evq(
    __in        efx_nic_t *enp,
    __in        uint32_t instance)
{
    efx_mcdi_req_t req;
    uint8_t payload[MAX(MC_CMD_FINI_EVQ_IN_LEN,
                MC_CMD_FINI_EVQ_OUT_LEN)];
    efx_rc_t rc;

    (void) memset(payload, 0, sizeof (payload));
    req.emr_cmd = MC_CMD_FINI_EVQ;
    req.emr_in_buf = payload;
    req.emr_in_length = MC_CMD_FINI_EVQ_IN_LEN;
    req.emr_out_buf = payload;
    req.emr_out_length = MC_CMD_FINI_EVQ_OUT_LEN;

    MCDI_IN_SET_DWORD(req, FINI_EVQ_IN_INSTANCE, instance);

    efx_mcdi_execute(enp, &req);

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

    return (0);

fail1:
    EFSYS_PROBE1(fail1, efx_rc_t, rc);

    return (rc);
}


    __checkReturn   efx_rc_t
ef10_ev_init(
    __in        efx_nic_t *enp)
{
    _NOTE(ARGUNUSED(enp))
    return (0);
}

            void
ef10_ev_fini(
    __in        efx_nic_t *enp)
{
    _NOTE(ARGUNUSED(enp))
}

    __checkReturn   efx_rc_t
ef10_ev_qcreate(
    __in        efx_nic_t *enp,
    __in        unsigned int index,
    __in        efsys_mem_t *esmp,
    __in        size_t n,
    __in        uint32_t id,
    __in        efx_evq_t *eep)
{
    efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
    uint32_t irq;
    efx_rc_t rc;

    _NOTE(ARGUNUSED(id))    /* buftbl id managed by MC */
    EFX_STATIC_ASSERT(ISP2(EFX_EVQ_MAXNEVS));
    EFX_STATIC_ASSERT(ISP2(EFX_EVQ_MINNEVS));

    if (!ISP2(n) || (n < EFX_EVQ_MINNEVS) || (n > EFX_EVQ_MAXNEVS)) {
        rc = EINVAL;
        goto fail1;
    }

    if (index >= encp->enc_evq_limit) {
        rc = EINVAL;
        goto fail2;
    }

    /* Set up the handler table */
    eep->ee_rx  = ef10_ev_rx;
    eep->ee_tx  = ef10_ev_tx;
    eep->ee_driver  = ef10_ev_driver;
    eep->ee_drv_gen = ef10_ev_drv_gen;
    eep->ee_mcdi    = ef10_ev_mcdi;

    /*
     * Set up the event queue
     * NOTE: ignore the returned IRQ param as firmware does not set it.
     */
    irq = index;    /* INIT_EVQ expects function-relative vector number */
    if ((rc = efx_mcdi_init_evq(enp, index, esmp, n, irq, NULL)) != 0)
        goto fail3;

    return (0);

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

    return (rc);
}

            void
ef10_ev_qdestroy(
    __in        efx_evq_t *eep)
{
    efx_nic_t *enp = eep->ee_enp;

    EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
        enp->en_family == EFX_FAMILY_MEDFORD);

    (void) efx_mcdi_fini_evq(eep->ee_enp, eep->ee_index);
}

    __checkReturn   efx_rc_t
ef10_ev_qprime(
    __in        efx_evq_t *eep,
    __in        unsigned int count)
{
    efx_nic_t *enp = eep->ee_enp;
    uint32_t rptr;
    efx_dword_t dword;

    rptr = count & eep->ee_mask;

    if (enp->en_nic_cfg.enc_bug35388_workaround) {
        EFX_STATIC_ASSERT(EFX_EVQ_MINNEVS >
            (1 << ERF_DD_EVQ_IND_RPTR_WIDTH));
        EFX_STATIC_ASSERT(EFX_EVQ_MAXNEVS <
            (1 << 2 * ERF_DD_EVQ_IND_RPTR_WIDTH));

        EFX_POPULATE_DWORD_2(dword,
            ERF_DD_EVQ_IND_RPTR_FLAGS,
            EFE_DD_EVQ_IND_RPTR_FLAGS_HIGH,
            ERF_DD_EVQ_IND_RPTR,
            (rptr >> ERF_DD_EVQ_IND_RPTR_WIDTH));
        EFX_BAR_TBL_WRITED(enp, ER_DD_EVQ_INDIRECT, eep->ee_index,
            &dword, B_FALSE);

        EFX_POPULATE_DWORD_2(dword,
            ERF_DD_EVQ_IND_RPTR_FLAGS,
            EFE_DD_EVQ_IND_RPTR_FLAGS_LOW,
            ERF_DD_EVQ_IND_RPTR,
            rptr & ((1 << ERF_DD_EVQ_IND_RPTR_WIDTH) - 1));
        EFX_BAR_TBL_WRITED(enp, ER_DD_EVQ_INDIRECT, eep->ee_index,
            &dword, B_FALSE);
    } else {
        EFX_POPULATE_DWORD_1(dword, ERF_DZ_EVQ_RPTR, rptr);
        EFX_BAR_TBL_WRITED(enp, ER_DZ_EVQ_RPTR_REG, eep->ee_index,
            &dword, B_FALSE);
    }

    return (0);
}

static  __checkReturn   efx_rc_t
efx_mcdi_driver_event(
    __in        efx_nic_t *enp,
    __in        uint32_t evq,
    __in        efx_qword_t data)
{
    efx_mcdi_req_t req;
    uint8_t payload[MAX(MC_CMD_DRIVER_EVENT_IN_LEN,
                MC_CMD_DRIVER_EVENT_OUT_LEN)];
    efx_rc_t rc;

    req.emr_cmd = MC_CMD_DRIVER_EVENT;
    req.emr_in_buf = payload;
    req.emr_in_length = MC_CMD_DRIVER_EVENT_IN_LEN;
    req.emr_out_buf = payload;
    req.emr_out_length = MC_CMD_DRIVER_EVENT_OUT_LEN;

    MCDI_IN_SET_DWORD(req, DRIVER_EVENT_IN_EVQ, evq);

    MCDI_IN_SET_DWORD(req, DRIVER_EVENT_IN_DATA_LO,
        EFX_QWORD_FIELD(data, EFX_DWORD_0));
    MCDI_IN_SET_DWORD(req, DRIVER_EVENT_IN_DATA_HI,
        EFX_QWORD_FIELD(data, EFX_DWORD_1));

    efx_mcdi_execute(enp, &req);

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

    return (0);

fail1:
    EFSYS_PROBE1(fail1, efx_rc_t, rc);

    return (rc);
}

            void
ef10_ev_qpost(
    __in    efx_evq_t *eep,
    __in    uint16_t data)
{
    efx_nic_t *enp = eep->ee_enp;
    efx_qword_t event;

    EFX_POPULATE_QWORD_3(event,
        ESF_DZ_DRV_CODE, ESE_DZ_EV_CODE_DRV_GEN_EV,
        ESF_DZ_DRV_SUB_CODE, 0,
        ESF_DZ_DRV_SUB_DATA_DW0, (uint32_t)data);

    (void) efx_mcdi_driver_event(enp, eep->ee_index, event);
}

    __checkReturn   efx_rc_t
ef10_ev_qmoderate(
    __in        efx_evq_t *eep,
    __in        unsigned int us)
{
    efx_nic_t *enp = eep->ee_enp;
    efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
    efx_dword_t dword;
    uint32_t timer_val, mode;
    efx_rc_t rc;

    if (us > encp->enc_evq_timer_max_us) {
        rc = EINVAL;
        goto fail1;
    }

    /* If the value is zero then disable the timer */
    if (us == 0) {
        timer_val = 0;
        mode = FFE_CZ_TIMER_MODE_DIS;
    } else {
        /* Calculate the timer value in quanta */
        timer_val = us * 1000 / encp->enc_evq_timer_quantum_ns;

        /* Moderation value is base 0 so we need to deduct 1 */
        if (timer_val > 0)
            timer_val--;

        mode = FFE_CZ_TIMER_MODE_INT_HLDOFF;
    }

    if (encp->enc_bug35388_workaround) {
        EFX_POPULATE_DWORD_3(dword,
            ERF_DD_EVQ_IND_TIMER_FLAGS,
            EFE_DD_EVQ_IND_TIMER_FLAGS,
            ERF_DD_EVQ_IND_TIMER_MODE, mode,
            ERF_DD_EVQ_IND_TIMER_VAL, timer_val);
        EFX_BAR_TBL_WRITED(enp, ER_DD_EVQ_INDIRECT,
            eep->ee_index, &dword, 0);
    } else {
        EFX_POPULATE_DWORD_2(dword,
            ERF_DZ_TC_TIMER_MODE, mode,
            ERF_DZ_TC_TIMER_VAL, timer_val);
        EFX_BAR_TBL_WRITED(enp, ER_DZ_EVQ_TMR_REG,
            eep->ee_index, &dword, 0);
    }

    return (0);

fail1:
    EFSYS_PROBE1(fail1, efx_rc_t, rc);

    return (rc);
}


#if EFSYS_OPT_QSTATS
            void
ef10_ev_qstats_update(
    __in                efx_evq_t *eep,
    __inout_ecount(EV_NQSTATS)  efsys_stat_t *stat)
{
    unsigned int id;

    for (id = 0; id < EV_NQSTATS; id++) {
        efsys_stat_t *essp = &stat[id];

        EFSYS_STAT_INCR(essp, eep->ee_stat[id]);
        eep->ee_stat[id] = 0;
    }
}
#endif /* EFSYS_OPT_QSTATS */


static  __checkReturn   boolean_t
ef10_ev_rx(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg)
{
    efx_nic_t *enp = eep->ee_enp;
    uint32_t size;
    uint32_t label;
    uint32_t mac_class;
    uint32_t eth_tag_class;
    uint32_t l3_class;
    uint32_t l4_class;
    uint32_t next_read_lbits;
    uint16_t flags;
    boolean_t cont;
    boolean_t should_abort;
    efx_evq_rxq_state_t *eersp;
    unsigned int desc_count;
    unsigned int last_used_id;

    EFX_EV_QSTAT_INCR(eep, EV_RX);

    /* Discard events after RXQ/TXQ errors */
    if (enp->en_reset_flags & (EFX_RESET_RXQ_ERR | EFX_RESET_TXQ_ERR))
        return (B_FALSE);

    /* Basic packet information */
    size = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_BYTES);
    next_read_lbits = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_DSC_PTR_LBITS);
    label = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_QLABEL);
    eth_tag_class = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_ETH_TAG_CLASS);
    mac_class = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_MAC_CLASS);
    l3_class = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_L3_CLASS);
    l4_class = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_L4_CLASS);
    cont = EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_CONT);

    if (EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_DROP_EVENT) != 0) {
        /* Drop this event */
        return (B_FALSE);
    }
    flags = 0;

    if (cont != 0) {
        /*
         * This may be part of a scattered frame, or it may be a
         * truncated frame if scatter is disabled on this RXQ.
         * Overlength frames can be received if e.g. a VF is configured
         * for 1500 MTU but connected to a port set to 9000 MTU
         * (see bug56567).
         * FIXME: There is not yet any driver that supports scatter on
         * Huntington.  Scatter support is required for OSX.
         */
        flags |= EFX_PKT_CONT;
    }

    if (mac_class == ESE_DZ_MAC_CLASS_UCAST)
        flags |= EFX_PKT_UNICAST;

    /* Increment the count of descriptors read */
    eersp = &eep->ee_rxq_state[label];
    desc_count = (next_read_lbits - eersp->eers_rx_read_ptr) &
        EFX_MASK32(ESF_DZ_RX_DSC_PTR_LBITS);
    eersp->eers_rx_read_ptr += desc_count;

    /*
     * FIXME: add error checking to make sure this a batched event.
     * This could also be an aborted scatter, see Bug36629.
     */
    if (desc_count > 1) {
        EFX_EV_QSTAT_INCR(eep, EV_RX_BATCH);
        flags |= EFX_PKT_PREFIX_LEN;
    }

    /* Calculate the index of the the last descriptor consumed */
    last_used_id = (eersp->eers_rx_read_ptr - 1) & eersp->eers_rx_mask;

    /* Check for errors that invalidate checksum and L3/L4 fields */
    if (EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_ECC_ERR) != 0) {
        /* RX frame truncated (error flag is misnamed) */
        EFX_EV_QSTAT_INCR(eep, EV_RX_FRM_TRUNC);
        flags |= EFX_DISCARD;
        goto deliver;
    }
    if (EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_ECRC_ERR) != 0) {
        /* Bad Ethernet frame CRC */
        EFX_EV_QSTAT_INCR(eep, EV_RX_ETH_CRC_ERR);
        flags |= EFX_DISCARD;
        goto deliver;
    }
    if (EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_PARSE_INCOMPLETE)) {
        /*
         * Hardware parse failed, due to malformed headers
         * or headers that are too long for the parser.
         * Headers and checksums must be validated by the host.
         */
        // TODO: EFX_EV_QSTAT_INCR(eep, EV_RX_PARSE_INCOMPLETE);
        goto deliver;
    }

    if ((eth_tag_class == ESE_DZ_ETH_TAG_CLASS_VLAN1) ||
        (eth_tag_class == ESE_DZ_ETH_TAG_CLASS_VLAN2)) {
        flags |= EFX_PKT_VLAN_TAGGED;
    }

    switch (l3_class) {
    case ESE_DZ_L3_CLASS_IP4:
    case ESE_DZ_L3_CLASS_IP4_FRAG:
        flags |= EFX_PKT_IPV4;
        if (EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_IPCKSUM_ERR)) {
            EFX_EV_QSTAT_INCR(eep, EV_RX_IPV4_HDR_CHKSUM_ERR);
        } else {
            flags |= EFX_CKSUM_IPV4;
        }

        if (l4_class == ESE_DZ_L4_CLASS_TCP) {
            EFX_EV_QSTAT_INCR(eep, EV_RX_TCP_IPV4);
            flags |= EFX_PKT_TCP;
        } else if (l4_class == ESE_DZ_L4_CLASS_UDP) {
            EFX_EV_QSTAT_INCR(eep, EV_RX_UDP_IPV4);
            flags |= EFX_PKT_UDP;
        } else {
            EFX_EV_QSTAT_INCR(eep, EV_RX_OTHER_IPV4);
        }
        break;

    case ESE_DZ_L3_CLASS_IP6:
    case ESE_DZ_L3_CLASS_IP6_FRAG:
        flags |= EFX_PKT_IPV6;

        if (l4_class == ESE_DZ_L4_CLASS_TCP) {
            EFX_EV_QSTAT_INCR(eep, EV_RX_TCP_IPV6);
            flags |= EFX_PKT_TCP;
        } else if (l4_class == ESE_DZ_L4_CLASS_UDP) {
            EFX_EV_QSTAT_INCR(eep, EV_RX_UDP_IPV6);
            flags |= EFX_PKT_UDP;
        } else {
            EFX_EV_QSTAT_INCR(eep, EV_RX_OTHER_IPV6);
        }
        break;

    default:
        EFX_EV_QSTAT_INCR(eep, EV_RX_NON_IP);
        break;
    }

    if (flags & (EFX_PKT_TCP | EFX_PKT_UDP)) {
        if (EFX_QWORD_FIELD(*eqp, ESF_DZ_RX_TCPUDP_CKSUM_ERR)) {
            EFX_EV_QSTAT_INCR(eep, EV_RX_TCP_UDP_CHKSUM_ERR);
        } else {
            flags |= EFX_CKSUM_TCPUDP;
        }
    }

deliver:
    /* If we're not discarding the packet then it is ok */
    if (~flags & EFX_DISCARD)
        EFX_EV_QSTAT_INCR(eep, EV_RX_OK);

    EFSYS_ASSERT(eecp->eec_rx != NULL);
    should_abort = eecp->eec_rx(arg, label, last_used_id, size, flags);

    return (should_abort);
}

static  __checkReturn   boolean_t
ef10_ev_tx(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg)
{
    efx_nic_t *enp = eep->ee_enp;
    uint32_t id;
    uint32_t label;
    boolean_t should_abort;

    EFX_EV_QSTAT_INCR(eep, EV_TX);

    /* Discard events after RXQ/TXQ errors */
    if (enp->en_reset_flags & (EFX_RESET_RXQ_ERR | EFX_RESET_TXQ_ERR))
        return (B_FALSE);

    if (EFX_QWORD_FIELD(*eqp, ESF_DZ_TX_DROP_EVENT) != 0) {
        /* Drop this event */
        return (B_FALSE);
    }

    /* Per-packet TX completion (was per-descriptor for Falcon/Siena) */
    id = EFX_QWORD_FIELD(*eqp, ESF_DZ_TX_DESCR_INDX);
    label = EFX_QWORD_FIELD(*eqp, ESF_DZ_TX_QLABEL);

    EFSYS_PROBE2(tx_complete, uint32_t, label, uint32_t, id);

    EFSYS_ASSERT(eecp->eec_tx != NULL);
    should_abort = eecp->eec_tx(arg, label, id);

    return (should_abort);
}

static  __checkReturn   boolean_t
ef10_ev_driver(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg)
{
    unsigned int code;
    boolean_t should_abort;

    EFX_EV_QSTAT_INCR(eep, EV_DRIVER);
    should_abort = B_FALSE;

    code = EFX_QWORD_FIELD(*eqp, ESF_DZ_DRV_SUB_CODE);
    switch (code) {
    case ESE_DZ_DRV_TIMER_EV: {
        uint32_t id;

        id = EFX_QWORD_FIELD(*eqp, ESF_DZ_DRV_TMR_ID);

        EFSYS_ASSERT(eecp->eec_timer != NULL);
        should_abort = eecp->eec_timer(arg, id);
        break;
    }

    case ESE_DZ_DRV_WAKE_UP_EV: {
        uint32_t id;

        id = EFX_QWORD_FIELD(*eqp, ESF_DZ_DRV_EVQ_ID);

        EFSYS_ASSERT(eecp->eec_wake_up != NULL);
        should_abort = eecp->eec_wake_up(arg, id);
        break;
    }

    case ESE_DZ_DRV_START_UP_EV:
        EFSYS_ASSERT(eecp->eec_initialized != NULL);
        should_abort = eecp->eec_initialized(arg);
        break;

    default:
        EFSYS_PROBE3(bad_event, unsigned int, eep->ee_index,
            uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_1),
            uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_0));
        break;
    }

    return (should_abort);
}

static  __checkReturn   boolean_t
ef10_ev_drv_gen(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg)
{
    uint32_t data;
    boolean_t should_abort;

    EFX_EV_QSTAT_INCR(eep, EV_DRV_GEN);
    should_abort = B_FALSE;

    data = EFX_QWORD_FIELD(*eqp, ESF_DZ_DRV_SUB_DATA_DW0);
    if (data >= ((uint32_t)1 << 16)) {
        EFSYS_PROBE3(bad_event, unsigned int, eep->ee_index,
            uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_1),
            uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_0));

        return (B_TRUE);
    }

    EFSYS_ASSERT(eecp->eec_software != NULL);
    should_abort = eecp->eec_software(arg, (uint16_t)data);

    return (should_abort);
}

static  __checkReturn   boolean_t
ef10_ev_mcdi(
    __in        efx_evq_t *eep,
    __in        efx_qword_t *eqp,
    __in        const efx_ev_callbacks_t *eecp,
    __in_opt    void *arg)
{
    efx_nic_t *enp = eep->ee_enp;
    unsigned code;
    boolean_t should_abort = B_FALSE;

    EFX_EV_QSTAT_INCR(eep, EV_MCDI_RESPONSE);

    code = EFX_QWORD_FIELD(*eqp, MCDI_EVENT_CODE);
    switch (code) {
    case MCDI_EVENT_CODE_BADSSERT:
        efx_mcdi_ev_death(enp, EINTR);
        break;

    case MCDI_EVENT_CODE_CMDDONE:
        efx_mcdi_ev_cpl(enp,
            MCDI_EV_FIELD(eqp, CMDDONE_SEQ),
            MCDI_EV_FIELD(eqp, CMDDONE_DATALEN),
            MCDI_EV_FIELD(eqp, CMDDONE_ERRNO));
        break;

#if EFSYS_OPT_MCDI_PROXY_AUTH
    case MCDI_EVENT_CODE_PROXY_RESPONSE:
        /*
         * This event notifies a function that an authorization request
         * has been processed. If the request was authorized then the
         * function can now re-send the original MCDI request.
         * See SF-113652-SW "SR-IOV Proxied Network Access Control".
         */
        efx_mcdi_ev_proxy_response(enp,
            MCDI_EV_FIELD(eqp, PROXY_RESPONSE_HANDLE),
            MCDI_EV_FIELD(eqp, PROXY_RESPONSE_RC));
        break;
#endif /* EFSYS_OPT_MCDI_PROXY_AUTH */

    case MCDI_EVENT_CODE_LINKCHANGE: {
        efx_link_mode_t link_mode;

        ef10_phy_link_ev(enp, eqp, &link_mode);
        should_abort = eecp->eec_link_change(arg, link_mode);
        break;
    }

    case MCDI_EVENT_CODE_SENSOREVT: {
#if EFSYS_OPT_MON_STATS
        efx_mon_stat_t id;
        efx_mon_stat_value_t value;
        efx_rc_t rc;

        /* Decode monitor stat for MCDI sensor (if supported) */
        if ((rc = mcdi_mon_ev(enp, eqp, &id, &value)) == 0) {
            /* Report monitor stat change */
            should_abort = eecp->eec_monitor(arg, id, value);
        } else if (rc == ENOTSUP) {
            should_abort = eecp->eec_exception(arg,
                EFX_EXCEPTION_UNKNOWN_SENSOREVT,
                MCDI_EV_FIELD(eqp, DATA));
        } else {
            EFSYS_ASSERT(rc == ENODEV); /* Wrong port */
        }
#endif
        break;
    }

    case MCDI_EVENT_CODE_SCHEDERR:
        /* Informational only */
        break;

    case MCDI_EVENT_CODE_REBOOT:
        /* Falcon/Siena only (should not been seen with Huntington). */
        efx_mcdi_ev_death(enp, EIO);
        break;

    case MCDI_EVENT_CODE_MC_REBOOT:
        /* MC_REBOOT event is used for Huntington (EF10) and later. */
        efx_mcdi_ev_death(enp, EIO);
        break;

    case MCDI_EVENT_CODE_MAC_STATS_DMA:
#if EFSYS_OPT_MAC_STATS
        if (eecp->eec_mac_stats != NULL) {
            eecp->eec_mac_stats(arg,
                MCDI_EV_FIELD(eqp, MAC_STATS_DMA_GENERATION));
        }
#endif
        break;

    case MCDI_EVENT_CODE_FWALERT: {
        uint32_t reason = MCDI_EV_FIELD(eqp, FWALERT_REASON);

        if (reason == MCDI_EVENT_FWALERT_REASON_SRAM_ACCESS)
            should_abort = eecp->eec_exception(arg,
                EFX_EXCEPTION_FWALERT_SRAM,
                MCDI_EV_FIELD(eqp, FWALERT_DATA));
        else
            should_abort = eecp->eec_exception(arg,
                EFX_EXCEPTION_UNKNOWN_FWALERT,
                MCDI_EV_FIELD(eqp, DATA));
        break;
    }

    case MCDI_EVENT_CODE_TX_ERR: {
        /*
         * After a TXQ error is detected, firmware sends a TX_ERR event.
         * This may be followed by TX completions (which we discard),
         * and then finally by a TX_FLUSH event. Firmware destroys the
         * TXQ automatically after sending the TX_FLUSH event.
         */
        enp->en_reset_flags |= EFX_RESET_TXQ_ERR;

        EFSYS_PROBE1(tx_descq_err, uint32_t, MCDI_EV_FIELD(eqp, DATA));

        /* Inform the driver that a reset is required. */
        eecp->eec_exception(arg, EFX_EXCEPTION_TX_ERROR,
            MCDI_EV_FIELD(eqp, TX_ERR_DATA));
        break;
    }

    case MCDI_EVENT_CODE_TX_FLUSH: {
        uint32_t txq_index = MCDI_EV_FIELD(eqp, TX_FLUSH_TXQ);

        /*
         * EF10 firmware sends two TX_FLUSH events: one to the txq's
         * event queue, and one to evq 0 (with TX_FLUSH_TO_DRIVER set).
         * We want to wait for all completions, so ignore the events
         * with TX_FLUSH_TO_DRIVER.
         */
        if (MCDI_EV_FIELD(eqp, TX_FLUSH_TO_DRIVER) != 0) {
            should_abort = B_FALSE;
            break;
        }

        EFX_EV_QSTAT_INCR(eep, EV_DRIVER_TX_DESCQ_FLS_DONE);

        EFSYS_PROBE1(tx_descq_fls_done, uint32_t, txq_index);

        EFSYS_ASSERT(eecp->eec_txq_flush_done != NULL);
        should_abort = eecp->eec_txq_flush_done(arg, txq_index);
        break;
    }

    case MCDI_EVENT_CODE_RX_ERR: {
        /*
         * After an RXQ error is detected, firmware sends an RX_ERR
         * event. This may be followed by RX events (which we discard),
         * and then finally by an RX_FLUSH event. Firmware destroys the
         * RXQ automatically after sending the RX_FLUSH event.
         */
        enp->en_reset_flags |= EFX_RESET_RXQ_ERR;

        EFSYS_PROBE1(rx_descq_err, uint32_t, MCDI_EV_FIELD(eqp, DATA));

        /* Inform the driver that a reset is required. */
        eecp->eec_exception(arg, EFX_EXCEPTION_RX_ERROR,
            MCDI_EV_FIELD(eqp, RX_ERR_DATA));
        break;
    }

    case MCDI_EVENT_CODE_RX_FLUSH: {
        uint32_t rxq_index = MCDI_EV_FIELD(eqp, RX_FLUSH_RXQ);

        /*
         * EF10 firmware sends two RX_FLUSH events: one to the rxq's
         * event queue, and one to evq 0 (with RX_FLUSH_TO_DRIVER set).
         * We want to wait for all completions, so ignore the events
         * with RX_FLUSH_TO_DRIVER.
         */
        if (MCDI_EV_FIELD(eqp, RX_FLUSH_TO_DRIVER) != 0) {
            should_abort = B_FALSE;
            break;
        }

        EFX_EV_QSTAT_INCR(eep, EV_DRIVER_RX_DESCQ_FLS_DONE);

        EFSYS_PROBE1(rx_descq_fls_done, uint32_t, rxq_index);

        EFSYS_ASSERT(eecp->eec_rxq_flush_done != NULL);
        should_abort = eecp->eec_rxq_flush_done(arg, rxq_index);
        break;
    }

    default:
        EFSYS_PROBE3(bad_event, unsigned int, eep->ee_index,
            uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_1),
            uint32_t, EFX_QWORD_FIELD(*eqp, EFX_DWORD_0));
        break;
    }

    return (should_abort);
}

        void
ef10_ev_rxlabel_init(
    __in        efx_evq_t *eep,
    __in        efx_rxq_t *erp,
    __in        unsigned int label)
{
    efx_evq_rxq_state_t *eersp;

    EFSYS_ASSERT3U(label, <, EFX_ARRAY_SIZE(eep->ee_rxq_state));
    eersp = &eep->ee_rxq_state[label];

    EFSYS_ASSERT3U(eersp->eers_rx_mask, ==, 0);

    eersp->eers_rx_read_ptr = 0;
    eersp->eers_rx_mask = erp->er_mask;
}

        void
ef10_ev_rxlabel_fini(
    __in        efx_evq_t *eep,
    __in        unsigned int label)
{
    efx_evq_rxq_state_t *eersp;

    EFSYS_ASSERT3U(label, <, EFX_ARRAY_SIZE(eep->ee_rxq_state));
    eersp = &eep->ee_rxq_state[label];

    EFSYS_ASSERT3U(eersp->eers_rx_mask, !=, 0);

    eersp->eers_rx_read_ptr = 0;
    eersp->eers_rx_mask = 0;
}

#endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */