ixgbe_dcb.c revision 315333
1/****************************************************************************** 2 3 Copyright (c) 2001-2017, Intel Corporation 4 All rights reserved. 5 6 Redistribution and use in source and binary forms, with or without 7 modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 16 3. Neither the name of the Intel Corporation nor the names of its 17 contributors may be used to endorse or promote products derived from 18 this software without specific prior written permission. 19 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 POSSIBILITY OF SUCH DAMAGE. 31 32******************************************************************************/ 33/*$FreeBSD: stable/10/sys/dev/ixgbe/ixgbe_dcb.c 315333 2017-03-15 21:20:17Z erj $*/ 34 35 36#include "ixgbe_type.h" 37#include "ixgbe_dcb.h" 38#include "ixgbe_dcb_82598.h" 39#include "ixgbe_dcb_82599.h" 40 41/** 42 * ixgbe_dcb_calculate_tc_credits - This calculates the ieee traffic class 43 * credits from the configured bandwidth percentages. Credits 44 * are the smallest unit programmable into the underlying 45 * hardware. The IEEE 802.1Qaz specification do not use bandwidth 46 * groups so this is much simplified from the CEE case. 47 */ 48s32 ixgbe_dcb_calculate_tc_credits(u8 *bw, u16 *refill, u16 *max, 49 int max_frame_size) 50{ 51 int min_percent = 100; 52 int min_credit, multiplier; 53 int i; 54 55 min_credit = ((max_frame_size / 2) + IXGBE_DCB_CREDIT_QUANTUM - 1) / 56 IXGBE_DCB_CREDIT_QUANTUM; 57 58 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) { 59 if (bw[i] < min_percent && bw[i]) 60 min_percent = bw[i]; 61 } 62 63 multiplier = (min_credit / min_percent) + 1; 64 65 /* Find out the hw credits for each TC */ 66 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) { 67 int val = min(bw[i] * multiplier, IXGBE_DCB_MAX_CREDIT_REFILL); 68 69 if (val < min_credit) 70 val = min_credit; 71 refill[i] = (u16)val; 72 73 max[i] = bw[i] ? (bw[i]*IXGBE_DCB_MAX_CREDIT)/100 : min_credit; 74 } 75 76 return 0; 77} 78 79/** 80 * ixgbe_dcb_calculate_tc_credits_cee - Calculates traffic class credits 81 * @ixgbe_dcb_config: Struct containing DCB settings. 82 * @direction: Configuring either Tx or Rx. 83 * 84 * This function calculates the credits allocated to each traffic class. 85 * It should be called only after the rules are checked by 86 * ixgbe_dcb_check_config_cee(). 87 */ 88s32 ixgbe_dcb_calculate_tc_credits_cee(struct ixgbe_hw *hw, 89 struct ixgbe_dcb_config *dcb_config, 90 u32 max_frame_size, u8 direction) 91{ 92 struct ixgbe_dcb_tc_path *p; 93 u32 min_multiplier = 0; 94 u16 min_percent = 100; 95 s32 ret_val = IXGBE_SUCCESS; 96 /* Initialization values default for Tx settings */ 97 u32 min_credit = 0; 98 u32 credit_refill = 0; 99 u32 credit_max = 0; 100 u16 link_percentage = 0; 101 u8 bw_percent = 0; 102 u8 i; 103 104 if (dcb_config == NULL) { 105 ret_val = IXGBE_ERR_CONFIG; 106 goto out; 107 } 108 109 min_credit = ((max_frame_size / 2) + IXGBE_DCB_CREDIT_QUANTUM - 1) / 110 IXGBE_DCB_CREDIT_QUANTUM; 111 112 /* Find smallest link percentage */ 113 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) { 114 p = &dcb_config->tc_config[i].path[direction]; 115 bw_percent = dcb_config->bw_percentage[direction][p->bwg_id]; 116 link_percentage = p->bwg_percent; 117 118 link_percentage = (link_percentage * bw_percent) / 100; 119 120 if (link_percentage && link_percentage < min_percent) 121 min_percent = link_percentage; 122 } 123 124 /* 125 * The ratio between traffic classes will control the bandwidth 126 * percentages seen on the wire. To calculate this ratio we use 127 * a multiplier. It is required that the refill credits must be 128 * larger than the max frame size so here we find the smallest 129 * multiplier that will allow all bandwidth percentages to be 130 * greater than the max frame size. 131 */ 132 min_multiplier = (min_credit / min_percent) + 1; 133 134 /* Find out the link percentage for each TC first */ 135 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) { 136 p = &dcb_config->tc_config[i].path[direction]; 137 bw_percent = dcb_config->bw_percentage[direction][p->bwg_id]; 138 139 link_percentage = p->bwg_percent; 140 /* Must be careful of integer division for very small nums */ 141 link_percentage = (link_percentage * bw_percent) / 100; 142 if (p->bwg_percent > 0 && link_percentage == 0) 143 link_percentage = 1; 144 145 /* Save link_percentage for reference */ 146 p->link_percent = (u8)link_percentage; 147 148 /* Calculate credit refill ratio using multiplier */ 149 credit_refill = min(link_percentage * min_multiplier, 150 (u32)IXGBE_DCB_MAX_CREDIT_REFILL); 151 152 /* Refill at least minimum credit */ 153 if (credit_refill < min_credit) 154 credit_refill = min_credit; 155 156 p->data_credits_refill = (u16)credit_refill; 157 158 /* Calculate maximum credit for the TC */ 159 credit_max = (link_percentage * IXGBE_DCB_MAX_CREDIT) / 100; 160 161 /* 162 * Adjustment based on rule checking, if the percentage 163 * of a TC is too small, the maximum credit may not be 164 * enough to send out a jumbo frame in data plane arbitration. 165 */ 166 if (credit_max < min_credit) 167 credit_max = min_credit; 168 169 if (direction == IXGBE_DCB_TX_CONFIG) { 170 /* 171 * Adjustment based on rule checking, if the 172 * percentage of a TC is too small, the maximum 173 * credit may not be enough to send out a TSO 174 * packet in descriptor plane arbitration. 175 */ 176 if (credit_max && (credit_max < 177 IXGBE_DCB_MIN_TSO_CREDIT) 178 && (hw->mac.type == ixgbe_mac_82598EB)) 179 credit_max = IXGBE_DCB_MIN_TSO_CREDIT; 180 181 dcb_config->tc_config[i].desc_credits_max = 182 (u16)credit_max; 183 } 184 185 p->data_credits_max = (u16)credit_max; 186 } 187 188out: 189 return ret_val; 190} 191 192/** 193 * ixgbe_dcb_unpack_pfc_cee - Unpack dcb_config PFC info 194 * @cfg: dcb configuration to unpack into hardware consumable fields 195 * @map: user priority to traffic class map 196 * @pfc_up: u8 to store user priority PFC bitmask 197 * 198 * This unpacks the dcb configuration PFC info which is stored per 199 * traffic class into a 8bit user priority bitmask that can be 200 * consumed by hardware routines. The priority to tc map must be 201 * updated before calling this routine to use current up-to maps. 202 */ 203void ixgbe_dcb_unpack_pfc_cee(struct ixgbe_dcb_config *cfg, u8 *map, u8 *pfc_up) 204{ 205 struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0]; 206 int up; 207 208 /* 209 * If the TC for this user priority has PFC enabled then set the 210 * matching bit in 'pfc_up' to reflect that PFC is enabled. 211 */ 212 for (*pfc_up = 0, up = 0; up < IXGBE_DCB_MAX_USER_PRIORITY; up++) { 213 if (tc_config[map[up]].pfc != ixgbe_dcb_pfc_disabled) 214 *pfc_up |= 1 << up; 215 } 216} 217 218void ixgbe_dcb_unpack_refill_cee(struct ixgbe_dcb_config *cfg, int direction, 219 u16 *refill) 220{ 221 struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0]; 222 int tc; 223 224 for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++) 225 refill[tc] = tc_config[tc].path[direction].data_credits_refill; 226} 227 228void ixgbe_dcb_unpack_max_cee(struct ixgbe_dcb_config *cfg, u16 *max) 229{ 230 struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0]; 231 int tc; 232 233 for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++) 234 max[tc] = tc_config[tc].desc_credits_max; 235} 236 237void ixgbe_dcb_unpack_bwgid_cee(struct ixgbe_dcb_config *cfg, int direction, 238 u8 *bwgid) 239{ 240 struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0]; 241 int tc; 242 243 for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++) 244 bwgid[tc] = tc_config[tc].path[direction].bwg_id; 245} 246 247void ixgbe_dcb_unpack_tsa_cee(struct ixgbe_dcb_config *cfg, int direction, 248 u8 *tsa) 249{ 250 struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0]; 251 int tc; 252 253 for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++) 254 tsa[tc] = tc_config[tc].path[direction].tsa; 255} 256 257u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *cfg, int direction, u8 up) 258{ 259 struct ixgbe_dcb_tc_config *tc_config = &cfg->tc_config[0]; 260 u8 prio_mask = 1 << up; 261 u8 tc = cfg->num_tcs.pg_tcs; 262 263 /* If tc is 0 then DCB is likely not enabled or supported */ 264 if (!tc) 265 goto out; 266 267 /* 268 * Test from maximum TC to 1 and report the first match we find. If 269 * we find no match we can assume that the TC is 0 since the TC must 270 * be set for all user priorities 271 */ 272 for (tc--; tc; tc--) { 273 if (prio_mask & tc_config[tc].path[direction].up_to_tc_bitmap) 274 break; 275 } 276out: 277 return tc; 278} 279 280void ixgbe_dcb_unpack_map_cee(struct ixgbe_dcb_config *cfg, int direction, 281 u8 *map) 282{ 283 u8 up; 284 285 for (up = 0; up < IXGBE_DCB_MAX_USER_PRIORITY; up++) 286 map[up] = ixgbe_dcb_get_tc_from_up(cfg, direction, up); 287} 288 289/** 290 * ixgbe_dcb_config - Struct containing DCB settings. 291 * @dcb_config: Pointer to DCB config structure 292 * 293 * This function checks DCB rules for DCB settings. 294 * The following rules are checked: 295 * 1. The sum of bandwidth percentages of all Bandwidth Groups must total 100%. 296 * 2. The sum of bandwidth percentages of all Traffic Classes within a Bandwidth 297 * Group must total 100. 298 * 3. A Traffic Class should not be set to both Link Strict Priority 299 * and Group Strict Priority. 300 * 4. Link strict Bandwidth Groups can only have link strict traffic classes 301 * with zero bandwidth. 302 */ 303s32 ixgbe_dcb_check_config_cee(struct ixgbe_dcb_config *dcb_config) 304{ 305 struct ixgbe_dcb_tc_path *p; 306 s32 ret_val = IXGBE_SUCCESS; 307 u8 i, j, bw = 0, bw_id; 308 u8 bw_sum[2][IXGBE_DCB_MAX_BW_GROUP]; 309 bool link_strict[2][IXGBE_DCB_MAX_BW_GROUP]; 310 311 memset(bw_sum, 0, sizeof(bw_sum)); 312 memset(link_strict, 0, sizeof(link_strict)); 313 314 /* First Tx, then Rx */ 315 for (i = 0; i < 2; i++) { 316 /* Check each traffic class for rule violation */ 317 for (j = 0; j < IXGBE_DCB_MAX_TRAFFIC_CLASS; j++) { 318 p = &dcb_config->tc_config[j].path[i]; 319 320 bw = p->bwg_percent; 321 bw_id = p->bwg_id; 322 323 if (bw_id >= IXGBE_DCB_MAX_BW_GROUP) { 324 ret_val = IXGBE_ERR_CONFIG; 325 goto err_config; 326 } 327 if (p->tsa == ixgbe_dcb_tsa_strict) { 328 link_strict[i][bw_id] = TRUE; 329 /* Link strict should have zero bandwidth */ 330 if (bw) { 331 ret_val = IXGBE_ERR_CONFIG; 332 goto err_config; 333 } 334 } else if (!bw) { 335 /* 336 * Traffic classes without link strict 337 * should have non-zero bandwidth. 338 */ 339 ret_val = IXGBE_ERR_CONFIG; 340 goto err_config; 341 } 342 bw_sum[i][bw_id] += bw; 343 } 344 345 bw = 0; 346 347 /* Check each bandwidth group for rule violation */ 348 for (j = 0; j < IXGBE_DCB_MAX_BW_GROUP; j++) { 349 bw += dcb_config->bw_percentage[i][j]; 350 /* 351 * Sum of bandwidth percentages of all traffic classes 352 * within a Bandwidth Group must total 100 except for 353 * link strict group (zero bandwidth). 354 */ 355 if (link_strict[i][j]) { 356 if (bw_sum[i][j]) { 357 /* 358 * Link strict group should have zero 359 * bandwidth. 360 */ 361 ret_val = IXGBE_ERR_CONFIG; 362 goto err_config; 363 } 364 } else if (bw_sum[i][j] != IXGBE_DCB_BW_PERCENT && 365 bw_sum[i][j] != 0) { 366 ret_val = IXGBE_ERR_CONFIG; 367 goto err_config; 368 } 369 } 370 371 if (bw != IXGBE_DCB_BW_PERCENT) { 372 ret_val = IXGBE_ERR_CONFIG; 373 goto err_config; 374 } 375 } 376 377err_config: 378 DEBUGOUT2("DCB error code %d while checking %s settings.\n", 379 ret_val, (i == IXGBE_DCB_TX_CONFIG) ? "Tx" : "Rx"); 380 381 return ret_val; 382} 383 384/** 385 * ixgbe_dcb_get_tc_stats - Returns status of each traffic class 386 * @hw: pointer to hardware structure 387 * @stats: pointer to statistics structure 388 * @tc_count: Number of elements in bwg_array. 389 * 390 * This function returns the status data for each of the Traffic Classes in use. 391 */ 392s32 ixgbe_dcb_get_tc_stats(struct ixgbe_hw *hw, struct ixgbe_hw_stats *stats, 393 u8 tc_count) 394{ 395 s32 ret = IXGBE_NOT_IMPLEMENTED; 396 switch (hw->mac.type) { 397 case ixgbe_mac_82598EB: 398 ret = ixgbe_dcb_get_tc_stats_82598(hw, stats, tc_count); 399 break; 400 case ixgbe_mac_82599EB: 401 case ixgbe_mac_X540: 402 case ixgbe_mac_X550: 403 case ixgbe_mac_X550EM_x: 404 case ixgbe_mac_X550EM_a: 405#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 406 ret = ixgbe_dcb_get_tc_stats_82599(hw, stats, tc_count); 407 break; 408#endif 409 default: 410 break; 411 } 412 return ret; 413} 414 415/** 416 * ixgbe_dcb_get_pfc_stats - Returns CBFC status of each traffic class 417 * @hw: pointer to hardware structure 418 * @stats: pointer to statistics structure 419 * @tc_count: Number of elements in bwg_array. 420 * 421 * This function returns the CBFC status data for each of the Traffic Classes. 422 */ 423s32 ixgbe_dcb_get_pfc_stats(struct ixgbe_hw *hw, struct ixgbe_hw_stats *stats, 424 u8 tc_count) 425{ 426 s32 ret = IXGBE_NOT_IMPLEMENTED; 427 switch (hw->mac.type) { 428 case ixgbe_mac_82598EB: 429 ret = ixgbe_dcb_get_pfc_stats_82598(hw, stats, tc_count); 430 break; 431 case ixgbe_mac_82599EB: 432 case ixgbe_mac_X540: 433 case ixgbe_mac_X550: 434 case ixgbe_mac_X550EM_x: 435 case ixgbe_mac_X550EM_a: 436#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 437 ret = ixgbe_dcb_get_pfc_stats_82599(hw, stats, tc_count); 438 break; 439#endif 440 default: 441 break; 442 } 443 return ret; 444} 445 446/** 447 * ixgbe_dcb_config_rx_arbiter_cee - Config Rx arbiter 448 * @hw: pointer to hardware structure 449 * @dcb_config: pointer to ixgbe_dcb_config structure 450 * 451 * Configure Rx Data Arbiter and credits for each traffic class. 452 */ 453s32 ixgbe_dcb_config_rx_arbiter_cee(struct ixgbe_hw *hw, 454 struct ixgbe_dcb_config *dcb_config) 455{ 456 s32 ret = IXGBE_NOT_IMPLEMENTED; 457 u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS] = { 0 }; 458 u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS] = { 0 }; 459 u8 map[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 }; 460 u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS] = { 0 }; 461 u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS] = { 0 }; 462 463 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill); 464 ixgbe_dcb_unpack_max_cee(dcb_config, max); 465 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid); 466 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa); 467 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map); 468 469 switch (hw->mac.type) { 470 case ixgbe_mac_82598EB: 471 ret = ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa); 472 break; 473 case ixgbe_mac_82599EB: 474 case ixgbe_mac_X540: 475 case ixgbe_mac_X550: 476 case ixgbe_mac_X550EM_x: 477 case ixgbe_mac_X550EM_a: 478#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 479 ret = ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwgid, 480 tsa, map); 481 break; 482#endif 483 default: 484 break; 485 } 486 return ret; 487} 488 489/** 490 * ixgbe_dcb_config_tx_desc_arbiter_cee - Config Tx Desc arbiter 491 * @hw: pointer to hardware structure 492 * @dcb_config: pointer to ixgbe_dcb_config structure 493 * 494 * Configure Tx Descriptor Arbiter and credits for each traffic class. 495 */ 496s32 ixgbe_dcb_config_tx_desc_arbiter_cee(struct ixgbe_hw *hw, 497 struct ixgbe_dcb_config *dcb_config) 498{ 499 s32 ret = IXGBE_NOT_IMPLEMENTED; 500 u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 501 u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 502 u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 503 u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 504 505 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill); 506 ixgbe_dcb_unpack_max_cee(dcb_config, max); 507 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid); 508 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa); 509 510 switch (hw->mac.type) { 511 case ixgbe_mac_82598EB: 512 ret = ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, 513 bwgid, tsa); 514 break; 515 case ixgbe_mac_82599EB: 516 case ixgbe_mac_X540: 517 case ixgbe_mac_X550: 518 case ixgbe_mac_X550EM_x: 519 case ixgbe_mac_X550EM_a: 520#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 521 ret = ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, 522 bwgid, tsa); 523 break; 524#endif 525 default: 526 break; 527 } 528 return ret; 529} 530 531/** 532 * ixgbe_dcb_config_tx_data_arbiter_cee - Config Tx data arbiter 533 * @hw: pointer to hardware structure 534 * @dcb_config: pointer to ixgbe_dcb_config structure 535 * 536 * Configure Tx Data Arbiter and credits for each traffic class. 537 */ 538s32 ixgbe_dcb_config_tx_data_arbiter_cee(struct ixgbe_hw *hw, 539 struct ixgbe_dcb_config *dcb_config) 540{ 541 s32 ret = IXGBE_NOT_IMPLEMENTED; 542 u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 543 u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 544 u8 map[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 }; 545 u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 546 u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 547 548 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill); 549 ixgbe_dcb_unpack_max_cee(dcb_config, max); 550 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid); 551 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa); 552 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map); 553 554 switch (hw->mac.type) { 555 case ixgbe_mac_82598EB: 556 ret = ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, 557 bwgid, tsa); 558 break; 559 case ixgbe_mac_82599EB: 560 case ixgbe_mac_X540: 561 case ixgbe_mac_X550: 562 case ixgbe_mac_X550EM_x: 563 case ixgbe_mac_X550EM_a: 564#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 565 ret = ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, 566 bwgid, tsa, 567 map); 568 break; 569#endif 570 default: 571 break; 572 } 573 return ret; 574} 575 576/** 577 * ixgbe_dcb_config_pfc_cee - Config priority flow control 578 * @hw: pointer to hardware structure 579 * @dcb_config: pointer to ixgbe_dcb_config structure 580 * 581 * Configure Priority Flow Control for each traffic class. 582 */ 583s32 ixgbe_dcb_config_pfc_cee(struct ixgbe_hw *hw, 584 struct ixgbe_dcb_config *dcb_config) 585{ 586 s32 ret = IXGBE_NOT_IMPLEMENTED; 587 u8 pfc_en; 588 u8 map[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 }; 589 590 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map); 591 ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en); 592 593 switch (hw->mac.type) { 594 case ixgbe_mac_82598EB: 595 ret = ixgbe_dcb_config_pfc_82598(hw, pfc_en); 596 break; 597 case ixgbe_mac_82599EB: 598 case ixgbe_mac_X540: 599 case ixgbe_mac_X550: 600 case ixgbe_mac_X550EM_x: 601 case ixgbe_mac_X550EM_a: 602#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 603 ret = ixgbe_dcb_config_pfc_82599(hw, pfc_en, map); 604 break; 605#endif 606 default: 607 break; 608 } 609 return ret; 610} 611 612/** 613 * ixgbe_dcb_config_tc_stats - Config traffic class statistics 614 * @hw: pointer to hardware structure 615 * 616 * Configure queue statistics registers, all queues belonging to same traffic 617 * class uses a single set of queue statistics counters. 618 */ 619s32 ixgbe_dcb_config_tc_stats(struct ixgbe_hw *hw) 620{ 621 s32 ret = IXGBE_NOT_IMPLEMENTED; 622 switch (hw->mac.type) { 623 case ixgbe_mac_82598EB: 624 ret = ixgbe_dcb_config_tc_stats_82598(hw); 625 break; 626 case ixgbe_mac_82599EB: 627 case ixgbe_mac_X540: 628 case ixgbe_mac_X550: 629 case ixgbe_mac_X550EM_x: 630 case ixgbe_mac_X550EM_a: 631#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 632 ret = ixgbe_dcb_config_tc_stats_82599(hw, NULL); 633 break; 634#endif 635 default: 636 break; 637 } 638 return ret; 639} 640 641/** 642 * ixgbe_dcb_hw_config_cee - Config and enable DCB 643 * @hw: pointer to hardware structure 644 * @dcb_config: pointer to ixgbe_dcb_config structure 645 * 646 * Configure dcb settings and enable dcb mode. 647 */ 648s32 ixgbe_dcb_hw_config_cee(struct ixgbe_hw *hw, 649 struct ixgbe_dcb_config *dcb_config) 650{ 651 s32 ret = IXGBE_NOT_IMPLEMENTED; 652 u8 pfc_en; 653 u8 tsa[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 654 u8 bwgid[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 655 u8 map[IXGBE_DCB_MAX_USER_PRIORITY] = { 0 }; 656 u16 refill[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 657 u16 max[IXGBE_DCB_MAX_TRAFFIC_CLASS]; 658 659 /* Unpack CEE standard containers */ 660 ixgbe_dcb_unpack_refill_cee(dcb_config, IXGBE_DCB_TX_CONFIG, refill); 661 ixgbe_dcb_unpack_max_cee(dcb_config, max); 662 ixgbe_dcb_unpack_bwgid_cee(dcb_config, IXGBE_DCB_TX_CONFIG, bwgid); 663 ixgbe_dcb_unpack_tsa_cee(dcb_config, IXGBE_DCB_TX_CONFIG, tsa); 664 ixgbe_dcb_unpack_map_cee(dcb_config, IXGBE_DCB_TX_CONFIG, map); 665 666 hw->mac.ops.setup_rxpba(hw, dcb_config->num_tcs.pg_tcs, 667 0, dcb_config->rx_pba_cfg); 668 669 switch (hw->mac.type) { 670 case ixgbe_mac_82598EB: 671 ret = ixgbe_dcb_hw_config_82598(hw, dcb_config->link_speed, 672 refill, max, bwgid, tsa); 673 break; 674 case ixgbe_mac_82599EB: 675 case ixgbe_mac_X540: 676 case ixgbe_mac_X550: 677 case ixgbe_mac_X550EM_x: 678 case ixgbe_mac_X550EM_a: 679#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 680 ixgbe_dcb_config_82599(hw, dcb_config); 681 ret = ixgbe_dcb_hw_config_82599(hw, dcb_config->link_speed, 682 refill, max, bwgid, 683 tsa, map); 684 685 ixgbe_dcb_config_tc_stats_82599(hw, dcb_config); 686 break; 687#endif 688 default: 689 break; 690 } 691 692 if (!ret && dcb_config->pfc_mode_enable) { 693 ixgbe_dcb_unpack_pfc_cee(dcb_config, map, &pfc_en); 694 ret = ixgbe_dcb_config_pfc(hw, pfc_en, map); 695 } 696 697 return ret; 698} 699 700/* Helper routines to abstract HW specifics from DCB netlink ops */ 701s32 ixgbe_dcb_config_pfc(struct ixgbe_hw *hw, u8 pfc_en, u8 *map) 702{ 703 int ret = IXGBE_ERR_PARAM; 704 705 switch (hw->mac.type) { 706 case ixgbe_mac_82598EB: 707 ret = ixgbe_dcb_config_pfc_82598(hw, pfc_en); 708 break; 709 case ixgbe_mac_82599EB: 710 case ixgbe_mac_X540: 711 case ixgbe_mac_X550: 712 case ixgbe_mac_X550EM_x: 713 case ixgbe_mac_X550EM_a: 714#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 715 ret = ixgbe_dcb_config_pfc_82599(hw, pfc_en, map); 716 break; 717#endif 718 default: 719 break; 720 } 721 return ret; 722} 723 724s32 ixgbe_dcb_hw_config(struct ixgbe_hw *hw, u16 *refill, u16 *max, 725 u8 *bwg_id, u8 *tsa, u8 *map) 726{ 727 switch (hw->mac.type) { 728 case ixgbe_mac_82598EB: 729 ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa); 730 ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id, 731 tsa); 732 ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id, 733 tsa); 734 break; 735 case ixgbe_mac_82599EB: 736 case ixgbe_mac_X540: 737 case ixgbe_mac_X550: 738 case ixgbe_mac_X550EM_x: 739 case ixgbe_mac_X550EM_a: 740#if !defined(NO_82599_SUPPORT) || !defined(NO_X540_SUPPORT) 741 ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id, 742 tsa, map); 743 ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id, 744 tsa); 745 ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id, 746 tsa, map); 747 break; 748#endif 749 default: 750 break; 751 } 752 return 0; 753} 754