1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2015-2018 Solarflare Communications Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * The views and conclusions contained in the software and documentation are 29 * those of the authors and should not be interpreted as representing official 30 * policies, either expressed or implied, of the FreeBSD Project. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include "efx.h" 37 #include "efx_impl.h" 38 39 #if EFSYS_OPT_MEDFORD2 40 41 static __checkReturn efx_rc_t 42 medford2_nic_get_required_pcie_bandwidth( 43 __in efx_nic_t *enp, 44 __out uint32_t *bandwidth_mbpsp) 45 { 46 uint32_t bandwidth; 47 efx_rc_t rc; 48 49 /* FIXME: support new Medford2 dynamic port modes */ 50 51 if ((rc = ef10_nic_get_port_mode_bandwidth(enp, 52 &bandwidth)) != 0) 53 goto fail1; 54 55 *bandwidth_mbpsp = bandwidth; 56 57 return (0); 58 59 fail1: 60 EFSYS_PROBE1(fail1, efx_rc_t, rc); 61 62 return (rc); 63 } 64 65 __checkReturn efx_rc_t 66 medford2_board_cfg( 67 __in efx_nic_t *enp) 68 { 69 efx_nic_cfg_t *encp = &(enp->en_nic_cfg); 70 uint32_t sysclk, dpcpu_clk; 71 uint32_t end_padding; 72 uint32_t bandwidth; 73 efx_rc_t rc; 74 75 /* 76 * Enable firmware workarounds for hardware errata. 77 * Expected responses are: 78 * - 0 (zero): 79 * Success: workaround enabled or disabled as requested. 80 * - MC_CMD_ERR_ENOSYS (reported as ENOTSUP): 81 * Firmware does not support the MC_CMD_WORKAROUND request. 82 * (assume that the workaround is not supported). 83 * - MC_CMD_ERR_ENOENT (reported as ENOENT): 84 * Firmware does not support the requested workaround. 85 * - MC_CMD_ERR_EPERM (reported as EACCES): 86 * Unprivileged function cannot enable/disable workarounds. 87 * 88 * See efx_mcdi_request_errcode() for MCDI error translations. 89 */ 90 91 if (EFX_PCI_FUNCTION_IS_VF(encp)) { 92 /* 93 * Interrupt testing does not work for VFs on Medford2. 94 * See bug50084 and bug71432 comment 21. 95 */ 96 encp->enc_bug41750_workaround = B_TRUE; 97 } 98 99 /* Chained multicast is always enabled on Medford2 */ 100 encp->enc_bug26807_workaround = B_TRUE; 101 102 /* 103 * If the bug61265 workaround is enabled, then interrupt holdoff timers 104 * cannot be controlled by timer table writes, so MCDI must be used 105 * (timer table writes can still be used for wakeup timers). 106 */ 107 rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG61265, B_TRUE, 108 NULL); 109 if ((rc == 0) || (rc == EACCES)) 110 encp->enc_bug61265_workaround = B_TRUE; 111 else if ((rc == ENOTSUP) || (rc == ENOENT)) 112 encp->enc_bug61265_workaround = B_FALSE; 113 else 114 goto fail1; 115 116 /* Checksums for TSO sends should always be correct on Medford2. */ 117 encp->enc_bug61297_workaround = B_FALSE; 118 119 /* Get clock frequencies (in MHz). */ 120 if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0) 121 goto fail2; 122 123 /* 124 * The Medford2 timer quantum is 1536 dpcpu_clk cycles, documented for 125 * the EV_TMR_VAL field of EV_TIMER_TBL. Scale for MHz and ns units. 126 */ 127 encp->enc_evq_timer_quantum_ns = 1536000UL / dpcpu_clk; /* 1536 cycles */ 128 encp->enc_evq_timer_max_us = (encp->enc_evq_timer_quantum_ns << 129 FRF_CZ_TC_TIMER_VAL_WIDTH) / 1000; 130 131 /* Alignment for receive packet DMA buffers */ 132 encp->enc_rx_buf_align_start = 1; 133 134 /* Get the RX DMA end padding alignment configuration */ 135 if ((rc = efx_mcdi_get_rxdp_config(enp, &end_padding)) != 0) { 136 if (rc != EACCES) 137 goto fail3; 138 139 /* Assume largest tail padding size supported by hardware */ 140 end_padding = 256; 141 } 142 encp->enc_rx_buf_align_end = end_padding; 143 144 /* 145 * The maximum supported transmit queue size is 2048. TXQs with 4096 146 * descriptors are not supported as the top bit is used for vfifo 147 * stuffing. 148 */ 149 encp->enc_txq_max_ndescs = 2048; 150 151 EFX_STATIC_ASSERT(MEDFORD2_PIOBUF_NBUFS <= EF10_MAX_PIOBUF_NBUFS); 152 encp->enc_piobuf_limit = MEDFORD2_PIOBUF_NBUFS; 153 encp->enc_piobuf_size = MEDFORD2_PIOBUF_SIZE; 154 encp->enc_piobuf_min_alloc_size = MEDFORD2_MIN_PIO_ALLOC_SIZE; 155 156 /* 157 * Medford2 stores a single global copy of VPD, not per-PF as on 158 * Huntington. 159 */ 160 encp->enc_vpd_is_global = B_TRUE; 161 162 rc = medford2_nic_get_required_pcie_bandwidth(enp, &bandwidth); 163 if (rc != 0) 164 goto fail4; 165 encp->enc_required_pcie_bandwidth_mbps = bandwidth; 166 encp->enc_max_pcie_link_gen = EFX_PCIE_LINK_SPEED_GEN3; 167 168 return (0); 169 170 fail4: 171 EFSYS_PROBE(fail4); 172 fail3: 173 EFSYS_PROBE(fail3); 174 fail2: 175 EFSYS_PROBE(fail2); 176 fail1: 177 EFSYS_PROBE1(fail1, efx_rc_t, rc); 178 179 return (rc); 180 } 181 182 #endif /* EFSYS_OPT_MEDFORD2 */ 183