/*
 * 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 */