1 /* 2 * AMD 10Gb Ethernet driver 3 * 4 * This file is available to you under your choice of the following two 5 * licenses: 6 * 7 * License 1: GPLv2 8 * 9 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc. 10 * 11 * This file is free software; you may copy, redistribute and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation, either version 2 of the License, or (at 14 * your option) any later version. 15 * 16 * This file is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program. If not, see <http://www.gnu.org/licenses/>. 23 * 24 * This file incorporates work covered by the following copyright and 25 * permission notice: 26 * The Synopsys DWC ETHER XGMAC Software Driver and documentation 27 * (hereinafter "Software") is an unsupported proprietary work of Synopsys, 28 * Inc. unless otherwise expressly agreed to in writing between Synopsys 29 * and you. 30 * 31 * The Software IS NOT an item of Licensed Software or Licensed Product 32 * under any End User Software License Agreement or Agreement for Licensed 33 * Product with Synopsys or any supplement thereto. Permission is hereby 34 * granted, free of charge, to any person obtaining a copy of this software 35 * annotated with this license and the Software, to deal in the Software 36 * without restriction, including without limitation the rights to use, 37 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies 38 * of the Software, and to permit persons to whom the Software is furnished 39 * to do so, subject to the following conditions: 40 * 41 * The above copyright notice and this permission notice shall be included 42 * in all copies or substantial portions of the Software. 43 * 44 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" 45 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 47 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 48 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 49 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 51 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 54 * THE POSSIBILITY OF SUCH DAMAGE. 55 * 56 * 57 * License 2: Modified BSD 58 * 59 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc. 60 * All rights reserved. 61 * 62 * Redistribution and use in source and binary forms, with or without 63 * modification, are permitted provided that the following conditions are met: 64 * * Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * * Redistributions in binary form must reproduce the above copyright 67 * notice, this list of conditions and the following disclaimer in the 68 * documentation and/or other materials provided with the distribution. 69 * * Neither the name of Advanced Micro Devices, Inc. nor the 70 * names of its contributors may be used to endorse or promote products 71 * derived from this software without specific prior written permission. 72 * 73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 74 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 76 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY 77 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 78 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 80 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 82 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 83 * 84 * This file incorporates work covered by the following copyright and 85 * permission notice: 86 * The Synopsys DWC ETHER XGMAC Software Driver and documentation 87 * (hereinafter "Software") is an unsupported proprietary work of Synopsys, 88 * Inc. unless otherwise expressly agreed to in writing between Synopsys 89 * and you. 90 * 91 * The Software IS NOT an item of Licensed Software or Licensed Product 92 * under any End User Software License Agreement or Agreement for Licensed 93 * Product with Synopsys or any supplement thereto. Permission is hereby 94 * granted, free of charge, to any person obtaining a copy of this software 95 * annotated with this license and the Software, to deal in the Software 96 * without restriction, including without limitation the rights to use, 97 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies 98 * of the Software, and to permit persons to whom the Software is furnished 99 * to do so, subject to the following conditions: 100 * 101 * The above copyright notice and this permission notice shall be included 102 * in all copies or substantial portions of the Software. 103 * 104 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" 105 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 106 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 107 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS 108 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 109 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 111 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 112 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 113 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 114 * THE POSSIBILITY OF SUCH DAMAGE. 115 */ 116 #include <sys/cdefs.h> 117 #include "xgbe.h" 118 119 #if 0 120 static int xgbe_dcb_ieee_getets(struct xgbe_prv_data *pdata, 121 struct ieee_ets *ets) 122 { 123 /* Set number of supported traffic classes */ 124 ets->ets_cap = pdata->hw_feat.tc_cnt; 125 126 if (pdata->ets) { 127 ets->cbs = pdata->ets->cbs; 128 memcpy(ets->tc_tx_bw, pdata->ets->tc_tx_bw, 129 sizeof(ets->tc_tx_bw)); 130 memcpy(ets->tc_tsa, pdata->ets->tc_tsa, 131 sizeof(ets->tc_tsa)); 132 memcpy(ets->prio_tc, pdata->ets->prio_tc, 133 sizeof(ets->prio_tc)); 134 } 135 136 return (0); 137 } 138 139 static int xgbe_dcb_ieee_setets(struct xgbe_prv_data *pdata, 140 struct ieee_ets *ets) 141 { 142 unsigned int i, tc_ets, tc_ets_weight; 143 u8 max_tc = 0; 144 145 tc_ets = 0; 146 tc_ets_weight = 0; 147 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { 148 axgbe_printf(1, 149 "TC%u: tx_bw=%hhu, rx_bw=%hhu, tsa=%hhu\n", i, 150 ets->tc_tx_bw[i], ets->tc_rx_bw[i], 151 ets->tc_tsa[i]); 152 axgbe_printf(1, "PRIO%u: TC=%hhu\n", i, 153 ets->prio_tc[i]); 154 155 max_tc = max_t(u8, max_tc, ets->prio_tc[i]); 156 if ((ets->tc_tx_bw[i] || ets->tc_tsa[i])) 157 max_tc = max_t(u8, max_tc, i); 158 159 switch (ets->tc_tsa[i]) { 160 case IEEE_8021QAZ_TSA_STRICT: 161 break; 162 case IEEE_8021QAZ_TSA_ETS: 163 tc_ets = 1; 164 tc_ets_weight += ets->tc_tx_bw[i]; 165 break; 166 default: 167 axgbe_error( 168 "unsupported TSA algorithm (%hhu)\n", 169 ets->tc_tsa[i]); 170 return (-EINVAL); 171 } 172 } 173 174 /* Check maximum traffic class requested */ 175 if (max_tc >= pdata->hw_feat.tc_cnt) { 176 axgbe_error( 177 "exceeded number of supported traffic classes\n"); 178 return (-EINVAL); 179 } 180 181 /* Weights must add up to 100% */ 182 if (tc_ets && (tc_ets_weight != 100)) { 183 axgbe_error( 184 "sum of ETS algorithm weights is not 100 (%u)\n", 185 tc_ets_weight); 186 return (-EINVAL); 187 } 188 189 if (!pdata->ets) { 190 pdata->ets = (struct ieee_ets *)malloc(sizeof(struct ieee_ets), 191 M_AXGBE, M_NOWAIT); //TODO - when to free? 192 193 if (!pdata->ets) 194 return (-ENOMEM); 195 } 196 197 pdata->num_tcs = max_tc + 1; 198 memcpy(pdata->ets, ets, sizeof(*pdata->ets)); 199 200 pdata->hw_if.config_dcb_tc(pdata); 201 202 return (0); 203 } 204 205 static int xgbe_dcb_ieee_getpfc(struct xgbe_prv_data *pdata, 206 struct ieee_pfc *pfc) 207 { 208 209 /* Set number of supported PFC traffic classes */ 210 pfc->pfc_cap = pdata->hw_feat.tc_cnt; 211 212 if (pdata->pfc) { 213 pfc->pfc_en = pdata->pfc->pfc_en; 214 pfc->mbc = pdata->pfc->mbc; 215 pfc->delay = pdata->pfc->delay; 216 } 217 218 return (0); 219 } 220 221 static int xgbe_dcb_ieee_setpfc(struct xgbe_prv_data *pdata, 222 struct ieee_pfc *pfc) 223 { 224 225 axgbe_printf(1, 226 "cap=%hhu, en=%#hhx, mbc=%hhu, delay=%d\n", 227 pfc->pfc_cap, pfc->pfc_en, pfc->mbc, pfc->delay); 228 229 /* Check PFC for supported number of traffic classes */ 230 if (pfc->pfc_en & ~((1 << pdata->hw_feat.tc_cnt) - 1)) { 231 axgbe_error( 232 "PFC requested for unsupported traffic class\n"); 233 return (-EINVAL); 234 } 235 236 if (!pdata->pfc) { 237 pdata->pfc = (struct ieee_pfc *)malloc(sizeof(struct ieee_pfc), 238 M_AXGBE, M_NOWAIT); //TODO - when to free? 239 240 if (!pdata->pfc) 241 return (-ENOMEM); 242 } 243 244 memcpy(pdata->pfc, pfc, sizeof(*pdata->pfc)); 245 246 pdata->hw_if.config_dcb_pfc(pdata); 247 248 return (0); 249 } 250 251 static u8 xgbe_dcb_getdcbx(struct xgbe_prv_data *pdata) 252 { 253 return (DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_IEEE); 254 } 255 256 static u8 xgbe_dcb_setdcbx(struct xgbe_prv_data *pdata, u8 dcbx) 257 { 258 u8 support = xgbe_dcb_getdcbx(pdata); 259 260 axgbe_printf(1, "DCBX=%#hhx\n", dcbx); 261 262 if (dcbx & ~support) 263 return (1); 264 265 if ((dcbx & support) != support) 266 return (1); 267 268 return (0); 269 } 270 #endif 271