1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2009-2016 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 #include "efx.h" 35 #include "efx_impl.h" 36 37 #if EFSYS_OPT_SIENA 38 39 void 40 siena_sram_init( 41 __in efx_nic_t *enp) 42 { 43 efx_nic_cfg_t *encp = &(enp->en_nic_cfg); 44 efx_oword_t oword; 45 uint32_t rx_base, tx_base; 46 47 EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC); 48 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); 49 50 rx_base = encp->enc_buftbl_limit; 51 tx_base = rx_base + (encp->enc_rxq_limit * 52 EFX_RXQ_DC_NDESCS(EFX_RXQ_DC_SIZE)); 53 54 /* Initialize the transmit descriptor cache */ 55 EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_TX_DC_BASE_ADR, tx_base); 56 EFX_BAR_WRITEO(enp, FR_AZ_SRM_TX_DC_CFG_REG, &oword); 57 58 EFX_POPULATE_OWORD_1(oword, FRF_AZ_TX_DC_SIZE, EFX_TXQ_DC_SIZE); 59 EFX_BAR_WRITEO(enp, FR_AZ_TX_DC_CFG_REG, &oword); 60 61 /* Initialize the receive descriptor cache */ 62 EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_RX_DC_BASE_ADR, rx_base); 63 EFX_BAR_WRITEO(enp, FR_AZ_SRM_RX_DC_CFG_REG, &oword); 64 65 EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DC_SIZE, EFX_RXQ_DC_SIZE); 66 EFX_BAR_WRITEO(enp, FR_AZ_RX_DC_CFG_REG, &oword); 67 68 /* Set receive descriptor pre-fetch low water mark */ 69 EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DC_PF_LWM, 56); 70 EFX_BAR_WRITEO(enp, FR_AZ_RX_DC_PF_WM_REG, &oword); 71 72 /* Set the event queue to use for SRAM updates */ 73 EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_UPD_EVQ_ID, 0); 74 EFX_BAR_WRITEO(enp, FR_AZ_SRM_UPD_EVQ_REG, &oword); 75 } 76 77 #if EFSYS_OPT_DIAG 78 79 __checkReturn efx_rc_t 80 siena_sram_test( 81 __in efx_nic_t *enp, 82 __in efx_sram_pattern_fn_t func) 83 { 84 efx_oword_t oword; 85 efx_qword_t qword; 86 efx_qword_t verify; 87 size_t rows; 88 unsigned int wptr; 89 unsigned int rptr; 90 efx_rc_t rc; 91 92 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); 93 94 /* Reconfigure into HALF buffer table mode */ 95 EFX_POPULATE_OWORD_1(oword, FRF_AZ_BUF_TBL_MODE, 0); 96 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_CFG_REG, &oword); 97 98 /* 99 * Move the descriptor caches up to the top of SRAM, and test 100 * all of SRAM below them. We only miss out one row here. 101 */ 102 rows = SIENA_SRAM_ROWS - 1; 103 EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_RX_DC_BASE_ADR, rows); 104 EFX_BAR_WRITEO(enp, FR_AZ_SRM_RX_DC_CFG_REG, &oword); 105 106 EFX_POPULATE_OWORD_1(oword, FRF_AZ_SRM_TX_DC_BASE_ADR, rows + 1); 107 EFX_BAR_WRITEO(enp, FR_AZ_SRM_TX_DC_CFG_REG, &oword); 108 109 /* 110 * Write the pattern through BUF_HALF_TBL. Write 111 * in 64 entry batches, waiting 1us in between each batch 112 * to guarantee not to overflow the SRAM fifo 113 */ 114 for (wptr = 0, rptr = 0; wptr < rows; ++wptr) { 115 func(wptr, B_FALSE, &qword); 116 EFX_BAR_TBL_WRITEQ(enp, FR_AZ_BUF_HALF_TBL, wptr, &qword); 117 118 if ((wptr - rptr) < 64 && wptr < rows - 1) 119 continue; 120 121 EFSYS_SPIN(1); 122 123 for (; rptr <= wptr; ++rptr) { 124 func(rptr, B_FALSE, &qword); 125 EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_HALF_TBL, rptr, 126 &verify); 127 128 if (!EFX_QWORD_IS_EQUAL(verify, qword)) { 129 rc = EFAULT; 130 goto fail1; 131 } 132 } 133 } 134 135 /* And do the same negated */ 136 for (wptr = 0, rptr = 0; wptr < rows; ++wptr) { 137 func(wptr, B_TRUE, &qword); 138 EFX_BAR_TBL_WRITEQ(enp, FR_AZ_BUF_HALF_TBL, wptr, &qword); 139 140 if ((wptr - rptr) < 64 && wptr < rows - 1) 141 continue; 142 143 EFSYS_SPIN(1); 144 145 for (; rptr <= wptr; ++rptr) { 146 func(rptr, B_TRUE, &qword); 147 EFX_BAR_TBL_READQ(enp, FR_AZ_BUF_HALF_TBL, rptr, 148 &verify); 149 150 if (!EFX_QWORD_IS_EQUAL(verify, qword)) { 151 rc = EFAULT; 152 goto fail2; 153 } 154 } 155 } 156 157 /* Restore back to FULL buffer table mode */ 158 EFX_POPULATE_OWORD_1(oword, FRF_AZ_BUF_TBL_MODE, 1); 159 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_CFG_REG, &oword); 160 161 /* 162 * We don't need to reconfigure SRAM again because the API 163 * requires efx_nic_fini() to be called after an sram test. 164 */ 165 return (0); 166 167 fail2: 168 EFSYS_PROBE(fail2); 169 fail1: 170 EFSYS_PROBE1(fail1, efx_rc_t, rc); 171 172 /* Restore back to FULL buffer table mode */ 173 EFX_POPULATE_OWORD_1(oword, FRF_AZ_BUF_TBL_MODE, 1); 174 EFX_BAR_WRITEO(enp, FR_AZ_BUF_TBL_CFG_REG, &oword); 175 176 return (rc); 177 } 178 179 #endif /* EFSYS_OPT_DIAG */ 180 181 #endif /* EFSYS_OPT_SIENA */ 182