268 lines
6.9 KiB
C
268 lines
6.9 KiB
C
/*-
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* Copyright (c) 2012-2016 Solarflare Communications Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation are
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* those of the authors and should not be interpreted as representing official
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* policies, either expressed or implied, of the FreeBSD Project.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "efx.h"
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#include "efx_impl.h"
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#if EFSYS_OPT_SIENA && EFSYS_OPT_MCDI
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#define SIENA_MCDI_PDU(_emip) \
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(((emip)->emi_port == 1) \
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? MC_SMEM_P0_PDU_OFST >> 2 \
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: MC_SMEM_P1_PDU_OFST >> 2)
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#define SIENA_MCDI_DOORBELL(_emip) \
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(((emip)->emi_port == 1) \
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? MC_SMEM_P0_DOORBELL_OFST >> 2 \
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: MC_SMEM_P1_DOORBELL_OFST >> 2)
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#define SIENA_MCDI_STATUS(_emip) \
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(((emip)->emi_port == 1) \
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? MC_SMEM_P0_STATUS_OFST >> 2 \
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: MC_SMEM_P1_STATUS_OFST >> 2)
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void
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siena_mcdi_send_request(
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__in efx_nic_t *enp,
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__in_bcount(hdr_len) void *hdrp,
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__in size_t hdr_len,
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__in_bcount(sdu_len) void *sdup,
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__in size_t sdu_len)
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{
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efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
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efx_dword_t dword;
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unsigned int pdur;
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unsigned int dbr;
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unsigned int pos;
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EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
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EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2);
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pdur = SIENA_MCDI_PDU(emip);
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dbr = SIENA_MCDI_DOORBELL(emip);
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/* Write the header */
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EFSYS_ASSERT3U(hdr_len, ==, sizeof (efx_dword_t));
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dword = *(efx_dword_t *)hdrp;
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EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, pdur, &dword, B_TRUE);
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/* Write the payload */
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for (pos = 0; pos < sdu_len; pos += sizeof (efx_dword_t)) {
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dword = *(efx_dword_t *)((uint8_t *)sdup + pos);
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EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM,
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pdur + 1 + (pos >> 2), &dword, B_FALSE);
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}
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/* Ring the doorbell */
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EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xd004be11);
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EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, dbr, &dword, B_FALSE);
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}
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efx_rc_t
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siena_mcdi_poll_reboot(
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__in efx_nic_t *enp)
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{
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#ifndef EFX_GRACEFUL_MC_REBOOT
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/*
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* This function is not being used properly.
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* Until its callers are fixed, it should always return 0.
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*/
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_NOTE(ARGUNUSED(enp))
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return (0);
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#else
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efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
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unsigned int rebootr;
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efx_dword_t dword;
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uint32_t value;
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EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
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EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2);
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rebootr = SIENA_MCDI_STATUS(emip);
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EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE);
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value = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
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if (value == 0)
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return (0);
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EFX_ZERO_DWORD(dword);
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EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE);
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if (value == MC_STATUS_DWORD_ASSERT)
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return (EINTR);
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else
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return (EIO);
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#endif
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}
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extern __checkReturn boolean_t
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siena_mcdi_poll_response(
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__in efx_nic_t *enp)
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{
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efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
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efx_dword_t hdr;
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unsigned int pdur;
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EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2);
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pdur = SIENA_MCDI_PDU(emip);
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EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, pdur, &hdr, B_FALSE);
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return (EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE) ? B_TRUE : B_FALSE);
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}
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void
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siena_mcdi_read_response(
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__in efx_nic_t *enp,
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__out_bcount(length) void *bufferp,
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__in size_t offset,
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__in size_t length)
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{
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efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
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unsigned int pdur;
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unsigned int pos = 0;
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efx_dword_t data;
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size_t remaining = length;
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EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2);
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pdur = SIENA_MCDI_PDU(emip);
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while (remaining > 0) {
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size_t chunk = MIN(remaining, sizeof (data));
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EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM,
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pdur + ((offset + pos) >> 2), &data, B_FALSE);
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memcpy((uint8_t *)bufferp + pos, &data, chunk);
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pos += chunk;
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remaining -= chunk;
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}
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}
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__checkReturn efx_rc_t
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siena_mcdi_init(
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__in efx_nic_t *enp,
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__in const efx_mcdi_transport_t *mtp)
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{
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efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
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efx_oword_t oword;
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unsigned int portnum;
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efx_rc_t rc;
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_NOTE(ARGUNUSED(mtp))
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EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA);
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/* Determine the port number to use for MCDI */
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EFX_BAR_READO(enp, FR_AZ_CS_DEBUG_REG, &oword);
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portnum = EFX_OWORD_FIELD(oword, FRF_CZ_CS_PORT_NUM);
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if (portnum == 0) {
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/* Presumably booted from ROM; only MCDI port 1 will work */
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emip->emi_port = 1;
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} else if (portnum <= 2) {
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emip->emi_port = portnum;
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} else {
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rc = EINVAL;
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goto fail1;
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}
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/* Siena BootROM and firmware only support MCDIv1 */
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emip->emi_max_version = 1;
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/*
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* Wipe the atomic reboot status so subsequent MCDI requests succeed.
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* BOOT_STATUS is preserved so eno_nic_probe() can boot out of the
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* assertion handler.
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*/
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(void) siena_mcdi_poll_reboot(enp);
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return (0);
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fail1:
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EFSYS_PROBE1(fail1, efx_rc_t, rc);
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return (rc);
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}
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void
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siena_mcdi_fini(
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__in efx_nic_t *enp)
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{
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_NOTE(ARGUNUSED(enp))
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}
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__checkReturn efx_rc_t
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siena_mcdi_feature_supported(
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__in efx_nic_t *enp,
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__in efx_mcdi_feature_id_t id,
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__out boolean_t *supportedp)
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{
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efx_rc_t rc;
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EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA);
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switch (id) {
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case EFX_MCDI_FEATURE_FW_UPDATE:
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case EFX_MCDI_FEATURE_LINK_CONTROL:
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case EFX_MCDI_FEATURE_MACADDR_CHANGE:
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case EFX_MCDI_FEATURE_MAC_SPOOFING:
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*supportedp = B_TRUE;
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break;
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default:
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rc = ENOTSUP;
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goto fail1;
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}
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return (0);
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fail1:
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EFSYS_PROBE1(fail1, efx_rc_t, rc);
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return (rc);
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}
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/* Default timeout for MCDI command processing. */
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#define SIENA_MCDI_CMD_TIMEOUT_US (10 * 1000 * 1000)
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void
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siena_mcdi_get_timeout(
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__in efx_nic_t *enp,
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__in efx_mcdi_req_t *emrp,
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__out uint32_t *timeoutp)
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{
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_NOTE(ARGUNUSED(enp, emrp))
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*timeoutp = SIENA_MCDI_CMD_TIMEOUT_US;
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}
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#endif /* EFSYS_OPT_SIENA && EFSYS_OPT_MCDI */
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