--- /dev/null
+/*
+ * 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_HUNTINGTON || EFSYS_OPT_MEDFORD
+
+#if EFSYS_OPT_MCDI
+
+#ifndef WITH_MCDI_V2
+#error "WITH_MCDI_V2 required for EF10 MCDIv2 commands."
+#endif
+
+
+ __checkReturn efx_rc_t
+ef10_mcdi_init(
+ __in efx_nic_t *enp,
+ __in const efx_mcdi_transport_t *emtp)
+{
+ efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+ efsys_mem_t *esmp = emtp->emt_dma_mem;
+ efx_dword_t dword;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+ enp->en_family == EFX_FAMILY_MEDFORD);
+ EFSYS_ASSERT(enp->en_features & EFX_FEATURE_MCDI_DMA);
+
+ /*
+ * All EF10 firmware supports MCDIv2 and MCDIv1.
+ * Medford BootROM supports MCDIv2 and MCDIv1.
+ * Huntington BootROM supports MCDIv1 only.
+ */
+ emip->emi_max_version = 2;
+
+ /* A host DMA buffer is required for EF10 MCDI */
+ if (esmp == NULL) {
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ /*
+ * Ensure that the MC doorbell is in a known state before issuing MCDI
+ * commands. The recovery algorithm requires that the MC command buffer
+ * must be 256 byte aligned. See bug24769.
+ */
+ if ((EFSYS_MEM_ADDR(esmp) & 0xFF) != 0) {
+ rc = EINVAL;
+ goto fail2;
+ }
+ EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 1);
+ EFX_BAR_WRITED(enp, ER_DZ_MC_DB_HWRD_REG, &dword, B_FALSE);
+
+ /* Save initial MC reboot status */
+ (void) ef10_mcdi_poll_reboot(enp);
+
+ /* Start a new epoch (allow fresh MCDI requests to succeed) */
+ efx_mcdi_new_epoch(enp);
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ void
+ef10_mcdi_fini(
+ __in efx_nic_t *enp)
+{
+ efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+
+ emip->emi_new_epoch = B_FALSE;
+}
+
+/*
+ * In older firmware all commands are processed in a single thread, so a long
+ * running command for one PCIe function can block processing for another
+ * function (see bug 61269).
+ *
+ * In newer firmware that supports multithreaded MCDI processing, we can extend
+ * the timeout for long-running requests which we know firmware may choose to
+ * process in a background thread.
+ */
+#define EF10_MCDI_CMD_TIMEOUT_US (10 * 1000 * 1000)
+#define EF10_MCDI_CMD_LONG_TIMEOUT_US (60 * 1000 * 1000)
+
+ void
+ef10_mcdi_get_timeout(
+ __in efx_nic_t *enp,
+ __in efx_mcdi_req_t *emrp,
+ __out uint32_t *timeoutp)
+{
+ efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
+
+ switch (emrp->emr_cmd) {
+ case MC_CMD_POLL_BIST:
+ case MC_CMD_NVRAM_ERASE:
+ case MC_CMD_LICENSING_V3:
+ case MC_CMD_NVRAM_UPDATE_FINISH:
+ if (encp->enc_fw_verified_nvram_update_required != B_FALSE) {
+ /*
+ * Potentially longer running commands, which firmware
+ * may choose to process in a background thread.
+ */
+ *timeoutp = EF10_MCDI_CMD_LONG_TIMEOUT_US;
+ break;
+ }
+ /* FALLTHRU */
+ default:
+ *timeoutp = EF10_MCDI_CMD_TIMEOUT_US;
+ break;
+ }
+}
+
+ void
+ef10_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)
+{
+ const efx_mcdi_transport_t *emtp = enp->en_mcdi.em_emtp;
+ efsys_mem_t *esmp = emtp->emt_dma_mem;
+ efx_dword_t dword;
+ unsigned int pos;
+
+ EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+ enp->en_family == EFX_FAMILY_MEDFORD);
+
+ /* Write the header */
+ for (pos = 0; pos < hdr_len; pos += sizeof (efx_dword_t)) {
+ dword = *(efx_dword_t *)((uint8_t *)hdrp + pos);
+ EFSYS_MEM_WRITED(esmp, pos, &dword);
+ }
+
+ /* Write the payload */
+ for (pos = 0; pos < sdu_len; pos += sizeof (efx_dword_t)) {
+ dword = *(efx_dword_t *)((uint8_t *)sdup + pos);
+ EFSYS_MEM_WRITED(esmp, hdr_len + pos, &dword);
+ }
+
+ /* Guarantee ordering of memory (MCDI request) and PIO (MC doorbell) */
+ EFSYS_DMA_SYNC_FOR_DEVICE(esmp, 0, hdr_len + sdu_len);
+ EFSYS_PIO_WRITE_BARRIER();
+
+ /* Ring the doorbell to post the command DMA address to the MC */
+ EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0,
+ EFSYS_MEM_ADDR(esmp) >> 32);
+ EFX_BAR_WRITED(enp, ER_DZ_MC_DB_LWRD_REG, &dword, B_FALSE);
+
+ EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0,
+ EFSYS_MEM_ADDR(esmp) & 0xffffffff);
+ EFX_BAR_WRITED(enp, ER_DZ_MC_DB_HWRD_REG, &dword, B_FALSE);
+}
+
+ __checkReturn boolean_t
+ef10_mcdi_poll_response(
+ __in efx_nic_t *enp)
+{
+ const efx_mcdi_transport_t *emtp = enp->en_mcdi.em_emtp;
+ efsys_mem_t *esmp = emtp->emt_dma_mem;
+ efx_dword_t hdr;
+
+ EFSYS_MEM_READD(esmp, 0, &hdr);
+ EFSYS_MEM_READ_BARRIER();
+
+ return (EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE) ? B_TRUE : B_FALSE);
+}
+
+ void
+ef10_mcdi_read_response(
+ __in efx_nic_t *enp,
+ __out_bcount(length) void *bufferp,
+ __in size_t offset,
+ __in size_t length)
+{
+ const efx_mcdi_transport_t *emtp = enp->en_mcdi.em_emtp;
+ efsys_mem_t *esmp = emtp->emt_dma_mem;
+ unsigned int pos;
+ efx_dword_t data;
+
+ for (pos = 0; pos < length; pos += sizeof (efx_dword_t)) {
+ EFSYS_MEM_READD(esmp, offset + pos, &data);
+ memcpy((uint8_t *)bufferp + pos, &data,
+ MIN(sizeof (data), length - pos));
+ }
+}
+
+ efx_rc_t
+ef10_mcdi_poll_reboot(
+ __in efx_nic_t *enp)
+{
+ efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+ efx_dword_t dword;
+ uint32_t old_status;
+ uint32_t new_status;
+ efx_rc_t rc;
+
+ old_status = emip->emi_mc_reboot_status;
+
+ /* Update MC reboot status word */
+ EFX_BAR_TBL_READD(enp, ER_DZ_BIU_MC_SFT_STATUS_REG, 0, &dword, B_FALSE);
+ new_status = dword.ed_u32[0];
+
+ /* MC has rebooted if the value has changed */
+ if (new_status != old_status) {
+ emip->emi_mc_reboot_status = new_status;
+
+ /*
+ * FIXME: Ignore detected MC REBOOT for now.
+ *
+ * The Siena support for checking for MC reboot from status
+ * flags is broken - see comments in siena_mcdi_poll_reboot().
+ * As the generic MCDI code is shared the EF10 reboot
+ * detection suffers similar problems.
+ *
+ * Do not report an error when the boot status changes until
+ * this can be handled by common code drivers (and reworked to
+ * support Siena too).
+ */
+ _NOTE(CONSTANTCONDITION)
+ if (B_FALSE) {
+ rc = EIO;
+ goto fail1;
+ }
+ }
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+ef10_mcdi_feature_supported(
+ __in efx_nic_t *enp,
+ __in efx_mcdi_feature_id_t id,
+ __out boolean_t *supportedp)
+{
+ efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
+ uint32_t privilege_mask = encp->enc_privilege_mask;
+ efx_rc_t rc;
+
+ EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
+ enp->en_family == EFX_FAMILY_MEDFORD);
+
+ /*
+ * Use privilege mask state at MCDI attach.
+ */
+
+ switch (id) {
+ case EFX_MCDI_FEATURE_FW_UPDATE:
+ /*
+ * Admin privilege must be used prior to introduction of
+ * specific flag.
+ */
+ *supportedp =
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
+ break;
+ case EFX_MCDI_FEATURE_LINK_CONTROL:
+ /*
+ * Admin privilege used prior to introduction of
+ * specific flag.
+ */
+ *supportedp =
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, LINK) ||
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
+ break;
+ case EFX_MCDI_FEATURE_MACADDR_CHANGE:
+ /*
+ * Admin privilege must be used prior to introduction of
+ * mac spoofing privilege (at v4.6), which is used up to
+ * introduction of change mac spoofing privilege (at v4.7)
+ */
+ *supportedp =
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, CHANGE_MAC) ||
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, MAC_SPOOFING) ||
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
+ break;
+ case EFX_MCDI_FEATURE_MAC_SPOOFING:
+ /*
+ * Admin privilege must be used prior to introduction of
+ * mac spoofing privilege (at v4.6), which is used up to
+ * introduction of mac spoofing TX privilege (at v4.7)
+ */
+ *supportedp =
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, MAC_SPOOFING_TX) ||
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, MAC_SPOOFING) ||
+ EFX_MCDI_HAVE_PRIVILEGE(privilege_mask, ADMIN);
+ break;
+ default:
+ rc = ENOTSUP;
+ goto fail1;
+ }
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+#endif /* EFSYS_OPT_MCDI */
+
+#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
Code Review / deb_dpdk.git / blobdiff