/*- * 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 <sys/cdefs.h> #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 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, NULL)) != 0) { /* No port mode info available */ bandwidth = 0; goto out; } if (port_modes & (1U << 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 & (1U << TLV_PORT_MODE_40G)) { bandwidth = 40000; } else if (port_modes & (1U << TLV_PORT_MODE_10G_10G_10G_10G)) { bandwidth = 4 * 10000; } else { /* Assume two 10G ports */ bandwidth = 2 * 10000; } } out: *bandwidth_mbpsp = bandwidth; return (0); fail1: EFSYS_PROBE1(fail1, efx_rc_t, rc); return (rc); } __checkReturn efx_rc_t hunt_board_cfg( __in efx_nic_t *enp) { efx_nic_cfg_t *encp = &(enp->en_nic_cfg); efx_port_t *epp = &(enp->en_port); uint32_t flags; uint32_t sysclk, dpcpu_clk; uint32_t bandwidth; efx_rc_t rc; /* * 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 fail1; /* * 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 fail2; } 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 fail3; } /* Get clock frequencies (in MHz). */ if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0) goto fail4; /* * 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 */ /* Checksums for TSO sends can be incorrect on Huntington. */ encp->enc_bug61297_workaround = B_TRUE; /* Alignment for receive packet DMA buffers */ encp->enc_rx_buf_align_start = 1; encp->enc_rx_buf_align_end = 64; /* RX DMA end padding */ /* * 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; EFX_STATIC_ASSERT(HUNT_PIOBUF_NBUFS <= EF10_MAX_PIOBUF_NBUFS); 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; if ((rc = hunt_nic_get_required_pcie_bandwidth(enp, &bandwidth)) != 0) goto fail5; 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); 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 */
