diff options
Diffstat (limited to 'drivers/net/sfc/base/siena_mcdi.c')
| -rw-r--r-- | drivers/net/sfc/base/siena_mcdi.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/drivers/net/sfc/base/siena_mcdi.c b/drivers/net/sfc/base/siena_mcdi.c new file mode 100644 index 00000000..63c29fcb --- /dev/null +++ b/drivers/net/sfc/base/siena_mcdi.c @@ -0,0 +1,263 @@ +/* + * Copyright (c) 2012-2016 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_SIENA && EFSYS_OPT_MCDI + +#define SIENA_MCDI_PDU(_emip) \ + (((emip)->emi_port == 1) \ + ? MC_SMEM_P0_PDU_OFST >> 2 \ + : MC_SMEM_P1_PDU_OFST >> 2) + +#define SIENA_MCDI_DOORBELL(_emip) \ + (((emip)->emi_port == 1) \ + ? MC_SMEM_P0_DOORBELL_OFST >> 2 \ + : MC_SMEM_P1_DOORBELL_OFST >> 2) + +#define SIENA_MCDI_STATUS(_emip) \ + (((emip)->emi_port == 1) \ + ? MC_SMEM_P0_STATUS_OFST >> 2 \ + : MC_SMEM_P1_STATUS_OFST >> 2) + + + void +siena_mcdi_send_request( + __in efx_nic_t *enp, + __in_bcount(hdr_len) void *hdrp, + __in size_t hdr_len, + __in_bcount(sdu_len) void *sdup, + __in size_t sdu_len) +{ + efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); + efx_dword_t dword; + unsigned int pdur; + unsigned int dbr; + unsigned int pos; + + EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); + + EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); + pdur = SIENA_MCDI_PDU(emip); + dbr = SIENA_MCDI_DOORBELL(emip); + + /* Write the header */ + EFSYS_ASSERT3U(hdr_len, ==, sizeof (efx_dword_t)); + dword = *(efx_dword_t *)hdrp; + EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, pdur, &dword, B_TRUE); + + /* Write the payload */ + for (pos = 0; pos < sdu_len; pos += sizeof (efx_dword_t)) { + dword = *(efx_dword_t *)((uint8_t *)sdup + pos); + EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, + pdur + 1 + (pos >> 2), &dword, B_FALSE); + } + + /* Ring the doorbell */ + EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xd004be11); + EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, dbr, &dword, B_FALSE); +} + + efx_rc_t +siena_mcdi_poll_reboot( + __in efx_nic_t *enp) +{ +#if 1 + /* + * XXX Bug 25922, bug 26099: This function is not being used + * properly. Until its callers are fixed, it should always + * return 0. + */ + _NOTE(ARGUNUSED(enp)) + return (0); +#else + efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); + unsigned int rebootr; + efx_dword_t dword; + uint32_t value; + + EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); + EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); + rebootr = SIENA_MCDI_STATUS(emip); + + EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE); + value = EFX_DWORD_FIELD(dword, EFX_DWORD_0); + + if (value == 0) + return (0); + + EFX_ZERO_DWORD(dword); + EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE); + + if (value == MC_STATUS_DWORD_ASSERT) + return (EINTR); + else + return (EIO); +#endif +} + +extern __checkReturn boolean_t +siena_mcdi_poll_response( + __in efx_nic_t *enp) +{ + efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); + efx_dword_t hdr; + unsigned int pdur; + + EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); + pdur = SIENA_MCDI_PDU(emip); + + EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, pdur, &hdr, B_FALSE); + return (EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE) ? B_TRUE : B_FALSE); +} + + void +siena_mcdi_read_response( + __in efx_nic_t *enp, + __out_bcount(length) void *bufferp, + __in size_t offset, + __in size_t length) +{ + efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); + unsigned int pdur; + unsigned int pos; + efx_dword_t data; + + EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); + pdur = SIENA_MCDI_PDU(emip); + + for (pos = 0; pos < length; pos += sizeof (efx_dword_t)) { + EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, + pdur + ((offset + pos) >> 2), &data, B_FALSE); + memcpy((uint8_t *)bufferp + pos, &data, + MIN(sizeof (data), length - pos)); + } +} + + __checkReturn efx_rc_t +siena_mcdi_init( + __in efx_nic_t *enp, + __in const efx_mcdi_transport_t *mtp) +{ + efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); + efx_oword_t oword; + unsigned int portnum; + efx_rc_t rc; + + _NOTE(ARGUNUSED(mtp)) + + EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); + + /* Determine the port number to use for MCDI */ + EFX_BAR_READO(enp, FR_AZ_CS_DEBUG_REG, &oword); + portnum = EFX_OWORD_FIELD(oword, FRF_CZ_CS_PORT_NUM); + + if (portnum == 0) { + /* Presumably booted from ROM; only MCDI port 1 will work */ + emip->emi_port = 1; + } else if (portnum <= 2) { + emip->emi_port = portnum; + } else { + rc = EINVAL; + goto fail1; + } + + /* Siena BootROM and firmware only support MCDIv1 */ + emip->emi_max_version = 1; + + /* + * Wipe the atomic reboot status so subsequent MCDI requests succeed. + * BOOT_STATUS is preserved so eno_nic_probe() can boot out of the + * assertion handler. + */ + (void) siena_mcdi_poll_reboot(enp); + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + + void +siena_mcdi_fini( + __in efx_nic_t *enp) +{ + _NOTE(ARGUNUSED(enp)) +} + + __checkReturn efx_rc_t +siena_mcdi_feature_supported( + __in efx_nic_t *enp, + __in efx_mcdi_feature_id_t id, + __out boolean_t *supportedp) +{ + efx_rc_t rc; + + EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA); + + switch (id) { + case EFX_MCDI_FEATURE_FW_UPDATE: + case EFX_MCDI_FEATURE_LINK_CONTROL: + case EFX_MCDI_FEATURE_MACADDR_CHANGE: + case EFX_MCDI_FEATURE_MAC_SPOOFING: + *supportedp = B_TRUE; + break; + default: + rc = ENOTSUP; + goto fail1; + } + + return (0); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + +/* Default timeout for MCDI command processing. */ +#define SIENA_MCDI_CMD_TIMEOUT_US (10 * 1000 * 1000) + + void +siena_mcdi_get_timeout( + __in efx_nic_t *enp, + __in efx_mcdi_req_t *emrp, + __out uint32_t *timeoutp) +{ + _NOTE(ARGUNUSED(enp, emrp)) + + *timeoutp = SIENA_MCDI_CMD_TIMEOUT_US; +} + + +#endif /* EFSYS_OPT_SIENA && EFSYS_OPT_MCDI */ |