--- /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_MON_MCDI
+#include "mcdi_mon.h"
+#endif
+
+#if EFSYS_OPT_HUNTINGTON
+
+#include "ef10_tlv_layout.h"
+
+static __checkReturn efx_rc_t
+hunt_nic_get_required_pcie_bandwidth(
+ __in efx_nic_t *enp,
+ __out uint32_t *bandwidth_mbpsp)
+{
+ uint32_t port_modes;
+ uint32_t max_port_mode;
+ uint32_t bandwidth;
+ efx_rc_t rc;
+
+ /*
+ * On Huntington, the firmware may not give us the current port mode, so
+ * we need to go by the set of available port modes and assume the most
+ * capable mode is in use.
+ */
+
+ if ((rc = efx_mcdi_get_port_modes(enp, &port_modes, NULL)) != 0) {
+ /* No port mode info available */
+ bandwidth = 0;
+ goto out;
+ }
+
+ if (port_modes & (1 << TLV_PORT_MODE_40G_40G)) {
+ /*
+ * This needs the full PCIe bandwidth (and could use
+ * more) - roughly 64 Gbit/s for 8 lanes of Gen3.
+ */
+ if ((rc = efx_nic_calculate_pcie_link_bandwidth(8,
+ EFX_PCIE_LINK_SPEED_GEN3, &bandwidth)) != 0)
+ goto fail1;
+ } else {
+ if (port_modes & (1 << TLV_PORT_MODE_40G)) {
+ max_port_mode = TLV_PORT_MODE_40G;
+ } else if (port_modes & (1 << TLV_PORT_MODE_10G_10G_10G_10G)) {
+ max_port_mode = TLV_PORT_MODE_10G_10G_10G_10G;
+ } else {
+ /* Assume two 10G ports */
+ max_port_mode = TLV_PORT_MODE_10G_10G;
+ }
+
+ if ((rc = ef10_nic_get_port_mode_bandwidth(max_port_mode,
+ &bandwidth)) != 0)
+ goto fail2;
+ }
+
+out:
+ *bandwidth_mbpsp = bandwidth;
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+hunt_board_cfg(
+ __in efx_nic_t *enp)
+{
+ efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+ efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
+ uint8_t mac_addr[6] = { 0 };
+ uint32_t board_type = 0;
+ ef10_link_state_t els;
+ efx_port_t *epp = &(enp->en_port);
+ uint32_t port;
+ uint32_t pf;
+ uint32_t vf;
+ uint32_t mask;
+ uint32_t flags;
+ uint32_t sysclk, dpcpu_clk;
+ uint32_t base, nvec;
+ uint32_t bandwidth;
+ efx_rc_t rc;
+
+ if ((rc = efx_mcdi_get_port_assignment(enp, &port)) != 0)
+ goto fail1;
+
+ /*
+ * NOTE: The MCDI protocol numbers ports from zero.
+ * The common code MCDI interface numbers ports from one.
+ */
+ emip->emi_port = port + 1;
+
+ if ((rc = ef10_external_port_mapping(enp, port,
+ &encp->enc_external_port)) != 0)
+ goto fail2;
+
+ /*
+ * Get PCIe function number from firmware (used for
+ * per-function privilege and dynamic config info).
+ * - PCIe PF: pf = PF number, vf = 0xffff.
+ * - PCIe VF: pf = parent PF, vf = VF number.
+ */
+ if ((rc = efx_mcdi_get_function_info(enp, &pf, &vf)) != 0)
+ goto fail3;
+
+ encp->enc_pf = pf;
+ encp->enc_vf = vf;
+
+ /* MAC address for this function */
+ if (EFX_PCI_FUNCTION_IS_PF(encp)) {
+ rc = efx_mcdi_get_mac_address_pf(enp, mac_addr);
+ if ((rc == 0) && (mac_addr[0] & 0x02)) {
+ /*
+ * If the static config does not include a global MAC
+ * address pool then the board may return a locally
+ * administered MAC address (this should only happen on
+ * incorrectly programmed boards).
+ */
+ rc = EINVAL;
+ }
+ } else {
+ rc = efx_mcdi_get_mac_address_vf(enp, mac_addr);
+ }
+ if (rc != 0)
+ goto fail4;
+
+ EFX_MAC_ADDR_COPY(encp->enc_mac_addr, mac_addr);
+
+ /* Board configuration */
+ rc = efx_mcdi_get_board_cfg(enp, &board_type, NULL, NULL);
+ if (rc != 0) {
+ /* Unprivileged functions may not be able to read board cfg */
+ if (rc == EACCES)
+ board_type = 0;
+ else
+ goto fail5;
+ }
+
+ encp->enc_board_type = board_type;
+ encp->enc_clk_mult = 1; /* not used for Huntington */
+
+ /* Fill out fields in enp->en_port and enp->en_nic_cfg from MCDI */
+ if ((rc = efx_mcdi_get_phy_cfg(enp)) != 0)
+ goto fail6;
+
+ /* Obtain the default PHY advertised capabilities */
+ if ((rc = ef10_phy_get_link(enp, &els)) != 0)
+ goto fail7;
+ epp->ep_default_adv_cap_mask = els.els_adv_cap_mask;
+ epp->ep_adv_cap_mask = els.els_adv_cap_mask;
+
+ /*
+ * Enable firmware workarounds for hardware errata.
+ * Expected responses are:
+ * - 0 (zero):
+ * Success: workaround enabled or disabled as requested.
+ * - MC_CMD_ERR_ENOSYS (reported as ENOTSUP):
+ * Firmware does not support the MC_CMD_WORKAROUND request.
+ * (assume that the workaround is not supported).
+ * - MC_CMD_ERR_ENOENT (reported as ENOENT):
+ * Firmware does not support the requested workaround.
+ * - MC_CMD_ERR_EPERM (reported as EACCES):
+ * Unprivileged function cannot enable/disable workarounds.
+ *
+ * See efx_mcdi_request_errcode() for MCDI error translations.
+ */
+
+ /*
+ * If the bug35388 workaround is enabled, then use an indirect access
+ * method to avoid unsafe EVQ writes.
+ */
+ rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG35388, B_TRUE,
+ NULL);
+ if ((rc == 0) || (rc == EACCES))
+ encp->enc_bug35388_workaround = B_TRUE;
+ else if ((rc == ENOTSUP) || (rc == ENOENT))
+ encp->enc_bug35388_workaround = B_FALSE;
+ else
+ goto fail8;
+
+ /*
+ * If the bug41750 workaround is enabled, then do not test interrupts,
+ * as the test will fail (seen with Greenport controllers).
+ */
+ rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG41750, B_TRUE,
+ NULL);
+ if (rc == 0) {
+ encp->enc_bug41750_workaround = B_TRUE;
+ } else if (rc == EACCES) {
+ /* Assume a controller with 40G ports needs the workaround. */
+ if (epp->ep_default_adv_cap_mask & EFX_PHY_CAP_40000FDX)
+ encp->enc_bug41750_workaround = B_TRUE;
+ else
+ encp->enc_bug41750_workaround = B_FALSE;
+ } else if ((rc == ENOTSUP) || (rc == ENOENT)) {
+ encp->enc_bug41750_workaround = B_FALSE;
+ } else {
+ goto fail9;
+ }
+ if (EFX_PCI_FUNCTION_IS_VF(encp)) {
+ /* Interrupt testing does not work for VFs. See bug50084. */
+ encp->enc_bug41750_workaround = B_TRUE;
+ }
+
+ /*
+ * If the bug26807 workaround is enabled, then firmware has enabled
+ * support for chained multicast filters. Firmware will reset (FLR)
+ * functions which have filters in the hardware filter table when the
+ * workaround is enabled/disabled.
+ *
+ * We must recheck if the workaround is enabled after inserting the
+ * first hardware filter, in case it has been changed since this check.
+ */
+ rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG26807,
+ B_TRUE, &flags);
+ if (rc == 0) {
+ encp->enc_bug26807_workaround = B_TRUE;
+ if (flags & (1 << MC_CMD_WORKAROUND_EXT_OUT_FLR_DONE_LBN)) {
+ /*
+ * Other functions had installed filters before the
+ * workaround was enabled, and they have been reset
+ * by firmware.
+ */
+ EFSYS_PROBE(bug26807_workaround_flr_done);
+ /* FIXME: bump MC warm boot count ? */
+ }
+ } else if (rc == EACCES) {
+ /*
+ * Unprivileged functions cannot enable the workaround in older
+ * firmware.
+ */
+ encp->enc_bug26807_workaround = B_FALSE;
+ } else if ((rc == ENOTSUP) || (rc == ENOENT)) {
+ encp->enc_bug26807_workaround = B_FALSE;
+ } else {
+ goto fail10;
+ }
+
+ /* Get clock frequencies (in MHz). */
+ if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0)
+ goto fail11;
+
+ /*
+ * The Huntington timer quantum is 1536 sysclk cycles, documented for
+ * the EV_TMR_VAL field of EV_TIMER_TBL. Scale for MHz and ns units.
+ */
+ encp->enc_evq_timer_quantum_ns = 1536000UL / sysclk; /* 1536 cycles */
+ if (encp->enc_bug35388_workaround) {
+ encp->enc_evq_timer_max_us = (encp->enc_evq_timer_quantum_ns <<
+ ERF_DD_EVQ_IND_TIMER_VAL_WIDTH) / 1000;
+ } else {
+ encp->enc_evq_timer_max_us = (encp->enc_evq_timer_quantum_ns <<
+ FRF_CZ_TC_TIMER_VAL_WIDTH) / 1000;
+ }
+
+ encp->enc_bug61265_workaround = B_FALSE; /* Medford only */
+
+ /* Check capabilities of running datapath firmware */
+ if ((rc = ef10_get_datapath_caps(enp)) != 0)
+ goto fail12;
+
+ /* Alignment for receive packet DMA buffers */
+ encp->enc_rx_buf_align_start = 1;
+ encp->enc_rx_buf_align_end = 64; /* RX DMA end padding */
+
+ /* Alignment for WPTR updates */
+ encp->enc_rx_push_align = EF10_RX_WPTR_ALIGN;
+
+ encp->enc_tx_dma_desc_size_max = EFX_MASK32(ESF_DZ_RX_KER_BYTE_CNT);
+ /* No boundary crossing limits */
+ encp->enc_tx_dma_desc_boundary = 0;
+
+ /*
+ * Set resource limits for MC_CMD_ALLOC_VIS. Note that we cannot use
+ * MC_CMD_GET_RESOURCE_LIMITS here as that reports the available
+ * resources (allocated to this PCIe function), which is zero until
+ * after we have allocated VIs.
+ */
+ encp->enc_evq_limit = 1024;
+ encp->enc_rxq_limit = EFX_RXQ_LIMIT_TARGET;
+ encp->enc_txq_limit = EFX_TXQ_LIMIT_TARGET;
+
+ /*
+ * The workaround for bug35388 uses the top bit of transmit queue
+ * descriptor writes, preventing the use of 4096 descriptor TXQs.
+ */
+ encp->enc_txq_max_ndescs = encp->enc_bug35388_workaround ? 2048 : 4096;
+
+ encp->enc_buftbl_limit = 0xFFFFFFFF;
+
+ encp->enc_piobuf_limit = HUNT_PIOBUF_NBUFS;
+ encp->enc_piobuf_size = HUNT_PIOBUF_SIZE;
+ encp->enc_piobuf_min_alloc_size = HUNT_MIN_PIO_ALLOC_SIZE;
+
+ /*
+ * Get the current privilege mask. Note that this may be modified
+ * dynamically, so this value is informational only. DO NOT use
+ * the privilege mask to check for sufficient privileges, as that
+ * can result in time-of-check/time-of-use bugs.
+ */
+ if ((rc = ef10_get_privilege_mask(enp, &mask)) != 0)
+ goto fail13;
+ encp->enc_privilege_mask = mask;
+
+ /* Get interrupt vector limits */
+ if ((rc = efx_mcdi_get_vector_cfg(enp, &base, &nvec, NULL)) != 0) {
+ if (EFX_PCI_FUNCTION_IS_PF(encp))
+ goto fail14;
+
+ /* Ignore error (cannot query vector limits from a VF). */
+ base = 0;
+ nvec = 1024;
+ }
+ encp->enc_intr_vec_base = base;
+ encp->enc_intr_limit = nvec;
+
+ /*
+ * Maximum number of bytes into the frame the TCP header can start for
+ * firmware assisted TSO to work.
+ */
+ encp->enc_tx_tso_tcp_header_offset_limit = EF10_TCP_HEADER_OFFSET_LIMIT;
+
+ if ((rc = hunt_nic_get_required_pcie_bandwidth(enp, &bandwidth)) != 0)
+ goto fail15;
+ encp->enc_required_pcie_bandwidth_mbps = bandwidth;
+
+ /* All Huntington devices have a PCIe Gen3, 8 lane connector */
+ encp->enc_max_pcie_link_gen = EFX_PCIE_LINK_SPEED_GEN3;
+
+ return (0);
+
+fail15:
+ EFSYS_PROBE(fail15);
+fail14:
+ EFSYS_PROBE(fail14);
+fail13:
+ EFSYS_PROBE(fail13);
+fail12:
+ EFSYS_PROBE(fail12);
+fail11:
+ EFSYS_PROBE(fail11);
+fail10:
+ EFSYS_PROBE(fail10);
+fail9:
+ EFSYS_PROBE(fail9);
+fail8:
+ EFSYS_PROBE(fail8);
+fail7:
+ EFSYS_PROBE(fail7);
+fail6:
+ EFSYS_PROBE(fail6);
+fail5:
+ EFSYS_PROBE(fail5);
+fail4:
+ EFSYS_PROBE(fail4);
+fail3:
+ EFSYS_PROBE(fail3);
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+
+#endif /* EFSYS_OPT_HUNTINGTON */
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