sfxge/common/ef10_intr.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_HUNTINGTON || EFSYS_OPT_MEDFORD

    __checkReturn   efx_rc_t
ef10_intr_init(
    __in        efx_nic_t *enp,
    __in        efx_intr_type_t type,
    __in        efsys_mem_t *esmp)
{
    _NOTE(ARGUNUSED(enp, type, esmp))
    return (0);
}


            void
ef10_intr_enable(
    __in        efx_nic_t *enp)
{
    _NOTE(ARGUNUSED(enp))
}


            void
ef10_intr_disable(
    __in        efx_nic_t *enp)
{
    _NOTE(ARGUNUSED(enp))
}


            void
ef10_intr_disable_unlocked(
    __in        efx_nic_t *enp)
{
    _NOTE(ARGUNUSED(enp))
}


static  __checkReturn   efx_rc_t
efx_mcdi_trigger_interrupt(
    __in        efx_nic_t *enp,
    __in        unsigned int level)
{
    efx_mcdi_req_t req;
    uint8_t payload[MAX(MC_CMD_TRIGGER_INTERRUPT_IN_LEN,
                MC_CMD_TRIGGER_INTERRUPT_OUT_LEN)];
    efx_rc_t rc;

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

    if (level >= enp->en_nic_cfg.enc_intr_limit) {
        rc = EINVAL;
        goto fail1;
    }

    (void) memset(payload, 0, sizeof (payload));
    req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT;
    req.emr_in_buf = payload;
    req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN;
    req.emr_out_buf = payload;
    req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN;

    MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level);

    efx_mcdi_execute(enp, &req);

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

    return (0);

fail2:
    EFSYS_PROBE(fail2);

fail1:
    EFSYS_PROBE1(fail1, efx_rc_t, rc);

    return (rc);
}

    __checkReturn   efx_rc_t
ef10_intr_trigger(
    __in        efx_nic_t *enp,
    __in        unsigned int level)
{
    efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
    efx_rc_t rc;

    if (encp->enc_bug41750_workaround) {
        /*
         * bug 41750: Test interrupts don't work on Greenport
         * bug 50084: Test interrupts don't work on VFs
         */
        rc = ENOTSUP;
        goto fail1;
    }

    if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0)
        goto fail2;

    return (0);

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

    return (rc);
}

            void
ef10_intr_status_line(
    __in        efx_nic_t *enp,
    __out       boolean_t *fatalp,
    __out       uint32_t *qmaskp)
{
    efx_dword_t dword;

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

    /* Read the queue mask and implicitly acknowledge the interrupt. */
    EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE);
    *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);

    EFSYS_PROBE1(qmask, uint32_t, *qmaskp);

    *fatalp = B_FALSE;
}

            void
ef10_intr_status_message(
    __in        efx_nic_t *enp,
    __in        unsigned int message,
    __out       boolean_t *fatalp)
{
    EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
            enp->en_family == EFX_FAMILY_MEDFORD);

    _NOTE(ARGUNUSED(enp, message))

    /* EF10 fatal errors are reported via events */
    *fatalp = B_FALSE;
}

            void
ef10_intr_fatal(
    __in        efx_nic_t *enp)
{
    /* EF10 fatal errors are reported via events */
    _NOTE(ARGUNUSED(enp))
}

            void
ef10_intr_fini(
    __in        efx_nic_t *enp)
{
    _NOTE(ARGUNUSED(enp))
}

#endif  /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */