drivers/net/hns3/hns3_dcb.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2019 Hisilicon Limited.
   3  */
   4
   5 #include <errno.h>
   6 #include <inttypes.h>
   7 #include <stdbool.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 #include <rte_io.h>
  11 #include <rte_common.h>
  12 #include <rte_ethdev.h>
  13
  14 #include "hns3_logs.h"
  15 #include "hns3_regs.h"
  16 #include "hns3_ethdev.h"
  17 #include "hns3_dcb.h"
  18
  19 #define HNS3_SHAPER_BS_U_DEF    5
  20 #define HNS3_SHAPER_BS_S_DEF    20
  21 #define BW_MAX_PERCENT          100
  22 #define HNS3_ETHER_MAX_RATE     100000
  23
  24 /*
  25  * hns3_shaper_para_calc: calculate ir parameter for the shaper
  26  * @ir: Rate to be config, its unit is Mbps
  27  * @shaper_level: the shaper level. eg: port, pg, priority, queueset
  28  * @shaper_para: shaper parameter of IR shaper
  29  *
  30  * the formula:
  31  *
  32  *              IR_b * (2 ^ IR_u) * 8
  33  * IR(Mbps) = -------------------------  *  CLOCK(1000Mbps)
  34  *              Tick * (2 ^ IR_s)
  35  *
  36  * @return: 0: calculate sucessful, negative: fail
  37  */
  38 static int
  39 hns3_shaper_para_calc(struct hns3_hw *hw, uint32_t ir, uint8_t shaper_level,
  40                       struct hns3_shaper_parameter *shaper_para)
  41 {
  42 #define SHAPER_DEFAULT_IR_B     126
  43 #define DIVISOR_CLK             (1000 * 8)
  44 #define DIVISOR_IR_B_126        (126 * DIVISOR_CLK)
  45
  46         const uint16_t tick_array[HNS3_SHAPER_LVL_CNT] = {
  47                 6 * 256,    /* Prioriy level */
  48                 6 * 32,     /* Prioriy group level */
  49                 6 * 8,      /* Port level */
  50                 6 * 256     /* Qset level */
  51         };
  52         uint8_t ir_u_calc = 0;
  53         uint8_t ir_s_calc = 0;
  54         uint32_t denominator;
  55         uint32_t ir_calc;
  56         uint32_t tick;
  57
  58         /* Calc tick */
  59         if (shaper_level >= HNS3_SHAPER_LVL_CNT) {
  60                 hns3_err(hw,
  61                          "shaper_level(%d) is greater than HNS3_SHAPER_LVL_CNT(%d)",
  62                          shaper_level, HNS3_SHAPER_LVL_CNT);
  63                 return -EINVAL;
  64         }
  65
  66         if (ir > HNS3_ETHER_MAX_RATE) {
  67                 hns3_err(hw, "rate(%d) exceeds the rate driver supported "
  68                          "HNS3_ETHER_MAX_RATE(%d)", ir, HNS3_ETHER_MAX_RATE);
  69                 return -EINVAL;
  70         }
  71
  72         tick = tick_array[shaper_level];
  73
  74         /*
  75          * Calc the speed if ir_b = 126, ir_u = 0 and ir_s = 0
  76          * the formula is changed to:
  77          *              126 * 1 * 8
  78          * ir_calc = ---------------- * 1000
  79          *              tick * 1
  80          */
  81         ir_calc = (DIVISOR_IR_B_126 + (tick >> 1) - 1) / tick;
  82
  83         if (ir_calc == ir) {
  84                 shaper_para->ir_b = SHAPER_DEFAULT_IR_B;
  85         } else if (ir_calc > ir) {
  86                 /* Increasing the denominator to select ir_s value */
  87                 do {
  88                         ir_s_calc++;
  89                         ir_calc = DIVISOR_IR_B_126 / (tick * (1 << ir_s_calc));
  90                 } while (ir_calc > ir);
  91
  92                 if (ir_calc == ir)
  93                         shaper_para->ir_b = SHAPER_DEFAULT_IR_B;
  94                 else
  95                         shaper_para->ir_b = (ir * tick * (1 << ir_s_calc) +
  96                                  (DIVISOR_CLK >> 1)) / DIVISOR_CLK;
  97         } else {
  98                 /*
  99                  * Increasing the numerator to select ir_u value. ir_u_calc will
 100                  * get maximum value when ir_calc is minimum and ir is maximum.
 101                  * ir_calc gets minimum value when tick is the maximum value.
 102                  * At the same time, value of ir_u_calc can only be increased up
 103                  * to eight after the while loop if the value of ir is equal
 104                  * to HNS3_ETHER_MAX_RATE.
 105                  */
 106                 uint32_t numerator;
 107                 do {
 108                         ir_u_calc++;
 109                         numerator = DIVISOR_IR_B_126 * (1 << ir_u_calc);
 110                         ir_calc = (numerator + (tick >> 1)) / tick;
 111                 } while (ir_calc < ir);
 112
 113                 if (ir_calc == ir) {
 114                         shaper_para->ir_b = SHAPER_DEFAULT_IR_B;
 115                 } else {
 116                         --ir_u_calc;
 117
 118                         /*
 119                          * The maximum value of ir_u_calc in this branch is
 120                          * seven in all cases. Thus, value of denominator can
 121                          * not be zero here.
 122                          */
 123                         denominator = DIVISOR_CLK * (1 << ir_u_calc);
 124                         shaper_para->ir_b =
 125                                 (ir * tick + (denominator >> 1)) / denominator;
 126                 }
 127         }
 128
 129         shaper_para->ir_u = ir_u_calc;
 130         shaper_para->ir_s = ir_s_calc;
 131
 132         return 0;
 133 }
 134
 135 static int
 136 hns3_fill_pri_array(struct hns3_hw *hw, uint8_t *pri, uint8_t pri_id)
 137 {
 138 #define HNS3_HALF_BYTE_BIT_OFFSET 4
 139         uint8_t tc = hw->dcb_info.prio_tc[pri_id];
 140
 141         if (tc >= hw->dcb_info.num_tc)
 142                 return -EINVAL;
 143
 144         /*
 145          * The register for priority has four bytes, the first bytes includes
 146          *  priority0 and priority1, the higher 4bit stands for priority1
 147          *  while the lower 4bit stands for priority0, as below:
 148          * first byte:  | pri_1 | pri_0 |
 149          * second byte: | pri_3 | pri_2 |
 150          * third byte:  | pri_5 | pri_4 |
 151          * fourth byte: | pri_7 | pri_6 |
 152          */
 153         pri[pri_id >> 1] |= tc << ((pri_id & 1) * HNS3_HALF_BYTE_BIT_OFFSET);
 154
 155         return 0;
 156 }
 157
 158 static int
 159 hns3_up_to_tc_map(struct hns3_hw *hw)
 160 {
 161         struct hns3_cmd_desc desc;
 162         uint8_t *pri = (uint8_t *)desc.data;
 163         uint8_t pri_id;
 164         int ret;
 165
 166         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_PRI_TO_TC_MAPPING, false);
 167
 168         for (pri_id = 0; pri_id < HNS3_MAX_USER_PRIO; pri_id++) {
 169                 ret = hns3_fill_pri_array(hw, pri, pri_id);
 170                 if (ret)
 171                         return ret;
 172         }
 173
 174         return hns3_cmd_send(hw, &desc, 1);
 175 }
 176
 177 static int
 178 hns3_pg_to_pri_map_cfg(struct hns3_hw *hw, uint8_t pg_id, uint8_t pri_bit_map)
 179 {
 180         struct hns3_pg_to_pri_link_cmd *map;
 181         struct hns3_cmd_desc desc;
 182
 183         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_PG_TO_PRI_LINK, false);
 184
 185         map = (struct hns3_pg_to_pri_link_cmd *)desc.data;
 186
 187         map->pg_id = pg_id;
 188         map->pri_bit_map = pri_bit_map;
 189
 190         return hns3_cmd_send(hw, &desc, 1);
 191 }
 192
 193 static int
 194 hns3_pg_to_pri_map(struct hns3_hw *hw)
 195 {
 196         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 197         struct hns3_pf *pf = &hns->pf;
 198         struct hns3_pg_info *pg_info;
 199         int ret, i;
 200
 201         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE)
 202                 return -EINVAL;
 203
 204         for (i = 0; i < hw->dcb_info.num_pg; i++) {
 205                 /* Cfg pg to priority mapping */
 206                 pg_info = &hw->dcb_info.pg_info[i];
 207                 ret = hns3_pg_to_pri_map_cfg(hw, i, pg_info->tc_bit_map);
 208                 if (ret)
 209                         return ret;
 210         }
 211
 212         return 0;
 213 }
 214
 215 static int
 216 hns3_qs_to_pri_map_cfg(struct hns3_hw *hw, uint16_t qs_id, uint8_t pri)
 217 {
 218         struct hns3_qs_to_pri_link_cmd *map;
 219         struct hns3_cmd_desc desc;
 220
 221         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_QS_TO_PRI_LINK, false);
 222
 223         map = (struct hns3_qs_to_pri_link_cmd *)desc.data;
 224
 225         map->qs_id = rte_cpu_to_le_16(qs_id);
 226         map->priority = pri;
 227         map->link_vld = HNS3_DCB_QS_PRI_LINK_VLD_MSK;
 228
 229         return hns3_cmd_send(hw, &desc, 1);
 230 }
 231
 232 static int
 233 hns3_dcb_qs_weight_cfg(struct hns3_hw *hw, uint16_t qs_id, uint8_t dwrr)
 234 {
 235         struct hns3_qs_weight_cmd *weight;
 236         struct hns3_cmd_desc desc;
 237
 238         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_QS_WEIGHT, false);
 239
 240         weight = (struct hns3_qs_weight_cmd *)desc.data;
 241
 242         weight->qs_id = rte_cpu_to_le_16(qs_id);
 243         weight->dwrr = dwrr;
 244
 245         return hns3_cmd_send(hw, &desc, 1);
 246 }
 247
 248 static int
 249 hns3_dcb_ets_tc_dwrr_cfg(struct hns3_hw *hw)
 250 {
 251 #define DEFAULT_TC_WEIGHT       1
 252 #define DEFAULT_TC_OFFSET       14
 253         struct hns3_ets_tc_weight_cmd *ets_weight;
 254         struct hns3_cmd_desc desc;
 255         uint8_t i;
 256
 257         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_ETS_TC_WEIGHT, false);
 258         ets_weight = (struct hns3_ets_tc_weight_cmd *)desc.data;
 259
 260         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 261                 struct hns3_pg_info *pg_info;
 262
 263                 ets_weight->tc_weight[i] = DEFAULT_TC_WEIGHT;
 264
 265                 if (!(hw->hw_tc_map & BIT(i)))
 266                         continue;
 267
 268                 pg_info = &hw->dcb_info.pg_info[hw->dcb_info.tc_info[i].pgid];
 269                 ets_weight->tc_weight[i] = pg_info->tc_dwrr[i];
 270         }
 271
 272         ets_weight->weight_offset = DEFAULT_TC_OFFSET;
 273
 274         return hns3_cmd_send(hw, &desc, 1);
 275 }
 276
 277 static int
 278 hns3_dcb_pri_weight_cfg(struct hns3_hw *hw, uint8_t pri_id, uint8_t dwrr)
 279 {
 280         struct hns3_priority_weight_cmd *weight;
 281         struct hns3_cmd_desc desc;
 282
 283         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_PRI_WEIGHT, false);
 284
 285         weight = (struct hns3_priority_weight_cmd *)desc.data;
 286
 287         weight->pri_id = pri_id;
 288         weight->dwrr = dwrr;
 289
 290         return hns3_cmd_send(hw, &desc, 1);
 291 }
 292
 293 static int
 294 hns3_dcb_pg_weight_cfg(struct hns3_hw *hw, uint8_t pg_id, uint8_t dwrr)
 295 {
 296         struct hns3_pg_weight_cmd *weight;
 297         struct hns3_cmd_desc desc;
 298
 299         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_PG_WEIGHT, false);
 300
 301         weight = (struct hns3_pg_weight_cmd *)desc.data;
 302
 303         weight->pg_id = pg_id;
 304         weight->dwrr = dwrr;
 305
 306         return hns3_cmd_send(hw, &desc, 1);
 307 }
 308 static int
 309 hns3_dcb_pg_schd_mode_cfg(struct hns3_hw *hw, uint8_t pg_id)
 310 {
 311         struct hns3_cmd_desc desc;
 312
 313         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_PG_SCH_MODE_CFG, false);
 314
 315         if (hw->dcb_info.pg_info[pg_id].pg_sch_mode == HNS3_SCH_MODE_DWRR)
 316                 desc.data[1] = rte_cpu_to_le_32(HNS3_DCB_TX_SCHD_DWRR_MSK);
 317         else
 318                 desc.data[1] = 0;
 319
 320         desc.data[0] = rte_cpu_to_le_32(pg_id);
 321
 322         return hns3_cmd_send(hw, &desc, 1);
 323 }
 324
 325 static uint32_t
 326 hns3_dcb_get_shapping_para(uint8_t ir_b, uint8_t ir_u, uint8_t ir_s,
 327                            uint8_t bs_b, uint8_t bs_s)
 328 {
 329         uint32_t shapping_para = 0;
 330
 331         hns3_dcb_set_field(shapping_para, IR_B, ir_b);
 332         hns3_dcb_set_field(shapping_para, IR_U, ir_u);
 333         hns3_dcb_set_field(shapping_para, IR_S, ir_s);
 334         hns3_dcb_set_field(shapping_para, BS_B, bs_b);
 335         hns3_dcb_set_field(shapping_para, BS_S, bs_s);
 336
 337         return shapping_para;
 338 }
 339
 340 static int
 341 hns3_dcb_port_shaper_cfg(struct hns3_hw *hw)
 342 {
 343         struct hns3_port_shapping_cmd *shap_cfg_cmd;
 344         struct hns3_shaper_parameter shaper_parameter;
 345         uint32_t shapping_para;
 346         uint32_t ir_u, ir_b, ir_s;
 347         struct hns3_cmd_desc desc;
 348         int ret;
 349
 350         ret = hns3_shaper_para_calc(hw, hw->mac.link_speed,
 351                                     HNS3_SHAPER_LVL_PORT, &shaper_parameter);
 352         if (ret) {
 353                 hns3_err(hw, "calculate shaper parameter failed: %d", ret);
 354                 return ret;
 355         }
 356
 357         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_PORT_SHAPPING, false);
 358         shap_cfg_cmd = (struct hns3_port_shapping_cmd *)desc.data;
 359
 360         ir_b = shaper_parameter.ir_b;
 361         ir_u = shaper_parameter.ir_u;
 362         ir_s = shaper_parameter.ir_s;
 363         shapping_para = hns3_dcb_get_shapping_para(ir_b, ir_u, ir_s,
 364                                                    HNS3_SHAPER_BS_U_DEF,
 365                                                    HNS3_SHAPER_BS_S_DEF);
 366
 367         shap_cfg_cmd->port_shapping_para = rte_cpu_to_le_32(shapping_para);
 368
 369         return hns3_cmd_send(hw, &desc, 1);
 370 }
 371
 372 static int
 373 hns3_dcb_pg_shapping_cfg(struct hns3_hw *hw, enum hns3_shap_bucket bucket,
 374                          uint8_t pg_id, uint32_t shapping_para)
 375 {
 376         struct hns3_pg_shapping_cmd *shap_cfg_cmd;
 377         enum hns3_opcode_type opcode;
 378         struct hns3_cmd_desc desc;
 379
 380         opcode = bucket ? HNS3_OPC_TM_PG_P_SHAPPING :
 381                  HNS3_OPC_TM_PG_C_SHAPPING;
 382         hns3_cmd_setup_basic_desc(&desc, opcode, false);
 383
 384         shap_cfg_cmd = (struct hns3_pg_shapping_cmd *)desc.data;
 385
 386         shap_cfg_cmd->pg_id = pg_id;
 387
 388         shap_cfg_cmd->pg_shapping_para = rte_cpu_to_le_32(shapping_para);
 389
 390         return hns3_cmd_send(hw, &desc, 1);
 391 }
 392
 393 static int
 394 hns3_dcb_pg_shaper_cfg(struct hns3_hw *hw)
 395 {
 396         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 397         struct hns3_shaper_parameter shaper_parameter;
 398         struct hns3_pf *pf = &hns->pf;
 399         uint32_t ir_u, ir_b, ir_s;
 400         uint32_t shaper_para;
 401         uint8_t i;
 402         int ret;
 403
 404         /* Cfg pg schd */
 405         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE)
 406                 return -EINVAL;
 407
 408         /* Pg to pri */
 409         for (i = 0; i < hw->dcb_info.num_pg; i++) {
 410                 /* Calc shaper para */
 411                 ret = hns3_shaper_para_calc(hw,
 412                                             hw->dcb_info.pg_info[i].bw_limit,
 413                                             HNS3_SHAPER_LVL_PG,
 414                                             &shaper_parameter);
 415                 if (ret) {
 416                         hns3_err(hw, "calculate shaper parameter failed: %d",
 417                                  ret);
 418                         return ret;
 419                 }
 420
 421                 shaper_para = hns3_dcb_get_shapping_para(0, 0, 0,
 422                                                          HNS3_SHAPER_BS_U_DEF,
 423                                                          HNS3_SHAPER_BS_S_DEF);
 424
 425                 ret = hns3_dcb_pg_shapping_cfg(hw, HNS3_DCB_SHAP_C_BUCKET, i,
 426                                                shaper_para);
 427                 if (ret) {
 428                         hns3_err(hw,
 429                                  "config PG CIR shaper parameter failed: %d",
 430                                  ret);
 431                         return ret;
 432                 }
 433
 434                 ir_b = shaper_parameter.ir_b;
 435                 ir_u = shaper_parameter.ir_u;
 436                 ir_s = shaper_parameter.ir_s;
 437                 shaper_para = hns3_dcb_get_shapping_para(ir_b, ir_u, ir_s,
 438                                                          HNS3_SHAPER_BS_U_DEF,
 439                                                          HNS3_SHAPER_BS_S_DEF);
 440
 441                 ret = hns3_dcb_pg_shapping_cfg(hw, HNS3_DCB_SHAP_P_BUCKET, i,
 442                                                shaper_para);
 443                 if (ret) {
 444                         hns3_err(hw,
 445                                  "config PG PIR shaper parameter failed: %d",
 446                                  ret);
 447                         return ret;
 448                 }
 449         }
 450
 451         return 0;
 452 }
 453
 454 static int
 455 hns3_dcb_qs_schd_mode_cfg(struct hns3_hw *hw, uint16_t qs_id, uint8_t mode)
 456 {
 457         struct hns3_cmd_desc desc;
 458
 459         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_QS_SCH_MODE_CFG, false);
 460
 461         if (mode == HNS3_SCH_MODE_DWRR)
 462                 desc.data[1] = rte_cpu_to_le_32(HNS3_DCB_TX_SCHD_DWRR_MSK);
 463         else
 464                 desc.data[1] = 0;
 465
 466         desc.data[0] = rte_cpu_to_le_32(qs_id);
 467
 468         return hns3_cmd_send(hw, &desc, 1);
 469 }
 470
 471 static int
 472 hns3_dcb_pri_schd_mode_cfg(struct hns3_hw *hw, uint8_t pri_id)
 473 {
 474         struct hns3_cmd_desc desc;
 475
 476         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_PRI_SCH_MODE_CFG, false);
 477
 478         if (hw->dcb_info.tc_info[pri_id].tc_sch_mode == HNS3_SCH_MODE_DWRR)
 479                 desc.data[1] = rte_cpu_to_le_32(HNS3_DCB_TX_SCHD_DWRR_MSK);
 480         else
 481                 desc.data[1] = 0;
 482
 483         desc.data[0] = rte_cpu_to_le_32(pri_id);
 484
 485         return hns3_cmd_send(hw, &desc, 1);
 486 }
 487
 488 static int
 489 hns3_dcb_pri_shapping_cfg(struct hns3_hw *hw, enum hns3_shap_bucket bucket,
 490                           uint8_t pri_id, uint32_t shapping_para)
 491 {
 492         struct hns3_pri_shapping_cmd *shap_cfg_cmd;
 493         enum hns3_opcode_type opcode;
 494         struct hns3_cmd_desc desc;
 495
 496         opcode = bucket ? HNS3_OPC_TM_PRI_P_SHAPPING :
 497                  HNS3_OPC_TM_PRI_C_SHAPPING;
 498
 499         hns3_cmd_setup_basic_desc(&desc, opcode, false);
 500
 501         shap_cfg_cmd = (struct hns3_pri_shapping_cmd *)desc.data;
 502
 503         shap_cfg_cmd->pri_id = pri_id;
 504
 505         shap_cfg_cmd->pri_shapping_para = rte_cpu_to_le_32(shapping_para);
 506
 507         return hns3_cmd_send(hw, &desc, 1);
 508 }
 509
 510 static int
 511 hns3_dcb_pri_tc_base_shaper_cfg(struct hns3_hw *hw)
 512 {
 513         struct hns3_shaper_parameter shaper_parameter;
 514         uint32_t ir_u, ir_b, ir_s;
 515         uint32_t shaper_para;
 516         int ret, i;
 517
 518         for (i = 0; i < hw->dcb_info.num_tc; i++) {
 519                 ret = hns3_shaper_para_calc(hw,
 520                                             hw->dcb_info.tc_info[i].bw_limit,
 521                                             HNS3_SHAPER_LVL_PRI,
 522                                             &shaper_parameter);
 523                 if (ret) {
 524                         hns3_err(hw, "calculate shaper parameter failed: %d",
 525                                  ret);
 526                         return ret;
 527                 }
 528
 529                 shaper_para = hns3_dcb_get_shapping_para(0, 0, 0,
 530                                                          HNS3_SHAPER_BS_U_DEF,
 531                                                          HNS3_SHAPER_BS_S_DEF);
 532
 533                 ret = hns3_dcb_pri_shapping_cfg(hw, HNS3_DCB_SHAP_C_BUCKET, i,
 534                                                 shaper_para);
 535                 if (ret) {
 536                         hns3_err(hw,
 537                                  "config priority CIR shaper parameter failed: %d",
 538                                  ret);
 539                         return ret;
 540                 }
 541
 542                 ir_b = shaper_parameter.ir_b;
 543                 ir_u = shaper_parameter.ir_u;
 544                 ir_s = shaper_parameter.ir_s;
 545                 shaper_para = hns3_dcb_get_shapping_para(ir_b, ir_u, ir_s,
 546                                                          HNS3_SHAPER_BS_U_DEF,
 547                                                          HNS3_SHAPER_BS_S_DEF);
 548
 549                 ret = hns3_dcb_pri_shapping_cfg(hw, HNS3_DCB_SHAP_P_BUCKET, i,
 550                                                 shaper_para);
 551                 if (ret) {
 552                         hns3_err(hw,
 553                                  "config priority PIR shaper parameter failed: %d",
 554                                  ret);
 555                         return ret;
 556                 }
 557         }
 558
 559         return 0;
 560 }
 561
 562
 563 static int
 564 hns3_dcb_pri_shaper_cfg(struct hns3_hw *hw)
 565 {
 566         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 567         struct hns3_pf *pf = &hns->pf;
 568         int ret;
 569
 570         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE)
 571                 return -EINVAL;
 572
 573         ret = hns3_dcb_pri_tc_base_shaper_cfg(hw);
 574         if (ret)
 575                 hns3_err(hw, "config port shaper failed: %d", ret);
 576
 577         return ret;
 578 }
 579
 580 void
 581 hns3_set_rss_size(struct hns3_hw *hw, uint16_t nb_rx_q)
 582 {
 583         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 584         uint16_t rx_qnum_per_tc;
 585         int i;
 586
 587         rx_qnum_per_tc = nb_rx_q / hw->num_tc;
 588         rx_qnum_per_tc = RTE_MIN(hw->rss_size_max, rx_qnum_per_tc);
 589         if (hw->alloc_rss_size != rx_qnum_per_tc) {
 590                 hns3_info(hw, "rss size changes from %u to %u",
 591                           hw->alloc_rss_size, rx_qnum_per_tc);
 592                 hw->alloc_rss_size = rx_qnum_per_tc;
 593         }
 594         hw->used_rx_queues = hw->num_tc * hw->alloc_rss_size;
 595
 596         /*
 597          * When rss size is changed, we need to update rss redirection table
 598          * maintained by driver. Besides, during the entire reset process, we
 599          * need to ensure that the rss table information are not overwritten
 600          * and configured directly to the hardware in the RESET_STAGE_RESTORE
 601          * stage of the reset process.
 602          */
 603         if (rte_atomic16_read(&hw->reset.resetting) == 0) {
 604                 for (i = 0; i < HNS3_RSS_IND_TBL_SIZE; i++)
 605                         rss_cfg->rss_indirection_tbl[i] =
 606                                                         i % hw->alloc_rss_size;
 607         }
 608 }
 609
 610 void
 611 hns3_tc_queue_mapping_cfg(struct hns3_hw *hw, uint16_t nb_queue)
 612 {
 613         struct hns3_tc_queue_info *tc_queue;
 614         uint8_t i;
 615
 616         hw->tx_qnum_per_tc = nb_queue / hw->num_tc;
 617         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 618                 tc_queue = &hw->tc_queue[i];
 619                 if (hw->hw_tc_map & BIT(i) && i < hw->num_tc) {
 620                         tc_queue->enable = true;
 621                         tc_queue->tqp_offset = i * hw->tx_qnum_per_tc;
 622                         tc_queue->tqp_count = hw->tx_qnum_per_tc;
 623                         tc_queue->tc = i;
 624                 } else {
 625                         /* Set to default queue if TC is disable */
 626                         tc_queue->enable = false;
 627                         tc_queue->tqp_offset = 0;
 628                         tc_queue->tqp_count = 0;
 629                         tc_queue->tc = 0;
 630                 }
 631         }
 632         hw->used_tx_queues = hw->num_tc * hw->tx_qnum_per_tc;
 633 }
 634
 635 static void
 636 hns3_dcb_update_tc_queue_mapping(struct hns3_hw *hw, uint16_t nb_rx_q,
 637                                  uint16_t nb_tx_q)
 638 {
 639         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 640         struct hns3_pf *pf = &hns->pf;
 641
 642         hw->num_tc = hw->dcb_info.num_tc;
 643         hns3_set_rss_size(hw, nb_rx_q);
 644         hns3_tc_queue_mapping_cfg(hw, nb_tx_q);
 645
 646         if (!hns->is_vf)
 647                 memcpy(pf->prio_tc, hw->dcb_info.prio_tc, HNS3_MAX_USER_PRIO);
 648 }
 649
 650 int
 651 hns3_dcb_info_init(struct hns3_hw *hw)
 652 {
 653         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 654         struct hns3_pf *pf = &hns->pf;
 655         int i, k;
 656
 657         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE &&
 658             hw->dcb_info.num_pg != 1)
 659                 return -EINVAL;
 660
 661         /* Initializing PG information */
 662         memset(hw->dcb_info.pg_info, 0,
 663                sizeof(struct hns3_pg_info) * HNS3_PG_NUM);
 664         for (i = 0; i < hw->dcb_info.num_pg; i++) {
 665                 hw->dcb_info.pg_dwrr[i] = i ? 0 : BW_MAX_PERCENT;
 666                 hw->dcb_info.pg_info[i].pg_id = i;
 667                 hw->dcb_info.pg_info[i].pg_sch_mode = HNS3_SCH_MODE_DWRR;
 668                 hw->dcb_info.pg_info[i].bw_limit = HNS3_ETHER_MAX_RATE;
 669
 670                 if (i != 0)
 671                         continue;
 672
 673                 hw->dcb_info.pg_info[i].tc_bit_map = hw->hw_tc_map;
 674                 for (k = 0; k < hw->dcb_info.num_tc; k++)
 675                         hw->dcb_info.pg_info[i].tc_dwrr[k] = BW_MAX_PERCENT;
 676         }
 677
 678         /* All UPs mapping to TC0 */
 679         for (i = 0; i < HNS3_MAX_USER_PRIO; i++)
 680                 hw->dcb_info.prio_tc[i] = 0;
 681
 682         /* Initializing tc information */
 683         memset(hw->dcb_info.tc_info, 0,
 684                sizeof(struct hns3_tc_info) * HNS3_MAX_TC_NUM);
 685         for (i = 0; i < hw->dcb_info.num_tc; i++) {
 686                 hw->dcb_info.tc_info[i].tc_id = i;
 687                 hw->dcb_info.tc_info[i].tc_sch_mode = HNS3_SCH_MODE_DWRR;
 688                 hw->dcb_info.tc_info[i].pgid = 0;
 689                 hw->dcb_info.tc_info[i].bw_limit =
 690                         hw->dcb_info.pg_info[0].bw_limit;
 691         }
 692
 693         return 0;
 694 }
 695
 696 static int
 697 hns3_dcb_lvl2_schd_mode_cfg(struct hns3_hw *hw)
 698 {
 699         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 700         struct hns3_pf *pf = &hns->pf;
 701         int ret, i;
 702
 703         /* Only being config on TC-Based scheduler mode */
 704         if (pf->tx_sch_mode == HNS3_FLAG_VNET_BASE_SCH_MODE)
 705                 return -EINVAL;
 706
 707         for (i = 0; i < hw->dcb_info.num_pg; i++) {
 708                 ret = hns3_dcb_pg_schd_mode_cfg(hw, i);
 709                 if (ret)
 710                         return ret;
 711         }
 712
 713         return 0;
 714 }
 715
 716 static int
 717 hns3_dcb_lvl34_schd_mode_cfg(struct hns3_hw *hw)
 718 {
 719         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 720         struct hns3_pf *pf = &hns->pf;
 721         uint8_t i;
 722         int ret;
 723
 724         if (pf->tx_sch_mode == HNS3_FLAG_TC_BASE_SCH_MODE) {
 725                 for (i = 0; i < hw->dcb_info.num_tc; i++) {
 726                         ret = hns3_dcb_pri_schd_mode_cfg(hw, i);
 727                         if (ret)
 728                                 return ret;
 729
 730                         ret = hns3_dcb_qs_schd_mode_cfg(hw, i,
 731                                                         HNS3_SCH_MODE_DWRR);
 732                         if (ret)
 733                                 return ret;
 734                 }
 735         }
 736
 737         return 0;
 738 }
 739
 740 static int
 741 hns3_dcb_schd_mode_cfg(struct hns3_hw *hw)
 742 {
 743         int ret;
 744
 745         ret = hns3_dcb_lvl2_schd_mode_cfg(hw);
 746         if (ret) {
 747                 hns3_err(hw, "config lvl2_schd_mode failed: %d", ret);
 748                 return ret;
 749         }
 750
 751         ret = hns3_dcb_lvl34_schd_mode_cfg(hw);
 752         if (ret)
 753                 hns3_err(hw, "config lvl34_schd_mode failed: %d", ret);
 754
 755         return ret;
 756 }
 757
 758 static int
 759 hns3_dcb_pri_tc_base_dwrr_cfg(struct hns3_hw *hw)
 760 {
 761         struct hns3_pg_info *pg_info;
 762         uint8_t dwrr;
 763         int ret, i;
 764
 765         for (i = 0; i < hw->dcb_info.num_tc; i++) {
 766                 pg_info = &hw->dcb_info.pg_info[hw->dcb_info.tc_info[i].pgid];
 767                 dwrr = pg_info->tc_dwrr[i];
 768
 769                 ret = hns3_dcb_pri_weight_cfg(hw, i, dwrr);
 770                 if (ret) {
 771                         hns3_err(hw, "fail to send priority weight cmd: %d", i);
 772                         return ret;
 773                 }
 774
 775                 ret = hns3_dcb_qs_weight_cfg(hw, i, BW_MAX_PERCENT);
 776                 if (ret) {
 777                         hns3_err(hw, "fail to send qs_weight cmd: %d", i);
 778                         return ret;
 779                 }
 780         }
 781
 782         return 0;
 783 }
 784
 785 static int
 786 hns3_dcb_pri_dwrr_cfg(struct hns3_hw *hw)
 787 {
 788         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 789         struct hns3_pf *pf = &hns->pf;
 790         uint32_t version;
 791         int ret;
 792
 793         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE)
 794                 return -EINVAL;
 795
 796         ret = hns3_dcb_pri_tc_base_dwrr_cfg(hw);
 797         if (ret)
 798                 return ret;
 799
 800         if (!hns3_dev_dcb_supported(hw))
 801                 return 0;
 802
 803         ret = hns3_dcb_ets_tc_dwrr_cfg(hw);
 804         if (ret == -EOPNOTSUPP) {
 805                 version = hw->fw_version;
 806                 hns3_warn(hw,
 807                           "fw %lu.%lu.%lu.%lu doesn't support ets tc weight cmd",
 808                           hns3_get_field(version, HNS3_FW_VERSION_BYTE3_M,
 809                                          HNS3_FW_VERSION_BYTE3_S),
 810                           hns3_get_field(version, HNS3_FW_VERSION_BYTE2_M,
 811                                          HNS3_FW_VERSION_BYTE2_S),
 812                           hns3_get_field(version, HNS3_FW_VERSION_BYTE1_M,
 813                                          HNS3_FW_VERSION_BYTE1_S),
 814                           hns3_get_field(version, HNS3_FW_VERSION_BYTE0_M,
 815                                          HNS3_FW_VERSION_BYTE0_S));
 816                 ret = 0;
 817         }
 818
 819         return ret;
 820 }
 821
 822 static int
 823 hns3_dcb_pg_dwrr_cfg(struct hns3_hw *hw)
 824 {
 825         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 826         struct hns3_pf *pf = &hns->pf;
 827         int ret, i;
 828
 829         /* Cfg pg schd */
 830         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE)
 831                 return -EINVAL;
 832
 833         /* Cfg pg to prio */
 834         for (i = 0; i < hw->dcb_info.num_pg; i++) {
 835                 /* Cfg dwrr */
 836                 ret = hns3_dcb_pg_weight_cfg(hw, i, hw->dcb_info.pg_dwrr[i]);
 837                 if (ret)
 838                         return ret;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static int
 845 hns3_dcb_dwrr_cfg(struct hns3_hw *hw)
 846 {
 847         int ret;
 848
 849         ret = hns3_dcb_pg_dwrr_cfg(hw);
 850         if (ret) {
 851                 hns3_err(hw, "config pg_dwrr failed: %d", ret);
 852                 return ret;
 853         }
 854
 855         ret = hns3_dcb_pri_dwrr_cfg(hw);
 856         if (ret)
 857                 hns3_err(hw, "config pri_dwrr failed: %d", ret);
 858
 859         return ret;
 860 }
 861
 862 static int
 863 hns3_dcb_shaper_cfg(struct hns3_hw *hw)
 864 {
 865         int ret;
 866
 867         ret = hns3_dcb_port_shaper_cfg(hw);
 868         if (ret) {
 869                 hns3_err(hw, "config port shaper failed: %d", ret);
 870                 return ret;
 871         }
 872
 873         ret = hns3_dcb_pg_shaper_cfg(hw);
 874         if (ret) {
 875                 hns3_err(hw, "config pg shaper failed: %d", ret);
 876                 return ret;
 877         }
 878
 879         return hns3_dcb_pri_shaper_cfg(hw);
 880 }
 881
 882 static int
 883 hns3_q_to_qs_map_cfg(struct hns3_hw *hw, uint16_t q_id, uint16_t qs_id)
 884 {
 885         struct hns3_nq_to_qs_link_cmd *map;
 886         struct hns3_cmd_desc desc;
 887
 888         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_NQ_TO_QS_LINK, false);
 889
 890         map = (struct hns3_nq_to_qs_link_cmd *)desc.data;
 891
 892         map->nq_id = rte_cpu_to_le_16(q_id);
 893         map->qset_id = rte_cpu_to_le_16(qs_id | HNS3_DCB_Q_QS_LINK_VLD_MSK);
 894
 895         return hns3_cmd_send(hw, &desc, 1);
 896 }
 897
 898 static int
 899 hns3_q_to_qs_map(struct hns3_hw *hw)
 900 {
 901         struct hns3_tc_queue_info *tc_queue;
 902         uint16_t q_id;
 903         uint32_t i, j;
 904         int ret;
 905
 906         for (i = 0; i < hw->num_tc; i++) {
 907                 tc_queue = &hw->tc_queue[i];
 908                 for (j = 0; j < tc_queue->tqp_count; j++) {
 909                         q_id = tc_queue->tqp_offset + j;
 910                         ret = hns3_q_to_qs_map_cfg(hw, q_id, i);
 911                         if (ret)
 912                                 return ret;
 913                 }
 914         }
 915
 916         return 0;
 917 }
 918
 919 static int
 920 hns3_pri_q_qs_cfg(struct hns3_hw *hw)
 921 {
 922         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 923         struct hns3_pf *pf = &hns->pf;
 924         uint32_t i;
 925         int ret;
 926
 927         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE)
 928                 return -EINVAL;
 929
 930         /* Cfg qs -> pri mapping */
 931         for (i = 0; i < hw->num_tc; i++) {
 932                 ret = hns3_qs_to_pri_map_cfg(hw, i, i);
 933                 if (ret) {
 934                         hns3_err(hw, "qs_to_pri mapping fail: %d", ret);
 935                         return ret;
 936                 }
 937         }
 938
 939         /* Cfg q -> qs mapping */
 940         ret = hns3_q_to_qs_map(hw);
 941         if (ret)
 942                 hns3_err(hw, "nq_to_qs mapping fail: %d", ret);
 943
 944         return ret;
 945 }
 946
 947 static int
 948 hns3_dcb_map_cfg(struct hns3_hw *hw)
 949 {
 950         int ret;
 951
 952         ret = hns3_up_to_tc_map(hw);
 953         if (ret) {
 954                 hns3_err(hw, "up_to_tc mapping fail: %d", ret);
 955                 return ret;
 956         }
 957
 958         ret = hns3_pg_to_pri_map(hw);
 959         if (ret) {
 960                 hns3_err(hw, "pri_to_pg mapping fail: %d", ret);
 961                 return ret;
 962         }
 963
 964         return hns3_pri_q_qs_cfg(hw);
 965 }
 966
 967 static int
 968 hns3_dcb_schd_setup_hw(struct hns3_hw *hw)
 969 {
 970         int ret;
 971
 972         /* Cfg dcb mapping  */
 973         ret = hns3_dcb_map_cfg(hw);
 974         if (ret)
 975                 return ret;
 976
 977         /* Cfg dcb shaper */
 978         ret = hns3_dcb_shaper_cfg(hw);
 979         if (ret)
 980                 return ret;
 981
 982         /* Cfg dwrr */
 983         ret = hns3_dcb_dwrr_cfg(hw);
 984         if (ret)
 985                 return ret;
 986
 987         /* Cfg schd mode for each level schd */
 988         return hns3_dcb_schd_mode_cfg(hw);
 989 }
 990
 991 static int
 992 hns3_pause_param_cfg(struct hns3_hw *hw, const uint8_t *addr,
 993                      uint8_t pause_trans_gap, uint16_t pause_trans_time)
 994 {
 995         struct hns3_cfg_pause_param_cmd *pause_param;
 996         struct hns3_cmd_desc desc;
 997
 998         pause_param = (struct hns3_cfg_pause_param_cmd *)desc.data;
 999
1000         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_CFG_MAC_PARA, false);
1001
1002         memcpy(pause_param->mac_addr, addr, RTE_ETHER_ADDR_LEN);
1003         memcpy(pause_param->mac_addr_extra, addr, RTE_ETHER_ADDR_LEN);
1004         pause_param->pause_trans_gap = pause_trans_gap;
1005         pause_param->pause_trans_time = rte_cpu_to_le_16(pause_trans_time);
1006
1007         return hns3_cmd_send(hw, &desc, 1);
1008 }
1009
1010 int
1011 hns3_pause_addr_cfg(struct hns3_hw *hw, const uint8_t *mac_addr)
1012 {
1013         struct hns3_cfg_pause_param_cmd *pause_param;
1014         struct hns3_cmd_desc desc;
1015         uint16_t trans_time;
1016         uint8_t trans_gap;
1017         int ret;
1018
1019         pause_param = (struct hns3_cfg_pause_param_cmd *)desc.data;
1020
1021         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_CFG_MAC_PARA, true);
1022
1023         ret = hns3_cmd_send(hw, &desc, 1);
1024         if (ret)
1025                 return ret;
1026
1027         trans_gap = pause_param->pause_trans_gap;
1028         trans_time = rte_le_to_cpu_16(pause_param->pause_trans_time);
1029
1030         return hns3_pause_param_cfg(hw, mac_addr, trans_gap, trans_time);
1031 }
1032
1033 static int
1034 hns3_pause_param_setup_hw(struct hns3_hw *hw, uint16_t pause_time)
1035 {
1036 #define PAUSE_TIME_DIV_BY       2
1037 #define PAUSE_TIME_MIN_VALUE    0x4
1038
1039         struct hns3_mac *mac = &hw->mac;
1040         uint8_t pause_trans_gap;
1041
1042         /*
1043          * Pause transmit gap must be less than "pause_time / 2", otherwise
1044          * the behavior of MAC is undefined.
1045          */
1046         if (pause_time > PAUSE_TIME_DIV_BY * HNS3_DEFAULT_PAUSE_TRANS_GAP)
1047                 pause_trans_gap = HNS3_DEFAULT_PAUSE_TRANS_GAP;
1048         else if (pause_time >= PAUSE_TIME_MIN_VALUE &&
1049                  pause_time <= PAUSE_TIME_DIV_BY * HNS3_DEFAULT_PAUSE_TRANS_GAP)
1050                 pause_trans_gap = pause_time / PAUSE_TIME_DIV_BY - 1;
1051         else {
1052                 hns3_warn(hw, "pause_time(%d) is adjusted to 4", pause_time);
1053                 pause_time = PAUSE_TIME_MIN_VALUE;
1054                 pause_trans_gap = pause_time / PAUSE_TIME_DIV_BY - 1;
1055         }
1056
1057         return hns3_pause_param_cfg(hw, mac->mac_addr,
1058                                     pause_trans_gap, pause_time);
1059 }
1060
1061 static int
1062 hns3_mac_pause_en_cfg(struct hns3_hw *hw, bool tx, bool rx)
1063 {
1064         struct hns3_cmd_desc desc;
1065
1066         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_CFG_MAC_PAUSE_EN, false);
1067
1068         desc.data[0] = rte_cpu_to_le_32((tx ? HNS3_TX_MAC_PAUSE_EN_MSK : 0) |
1069                 (rx ? HNS3_RX_MAC_PAUSE_EN_MSK : 0));
1070
1071         return hns3_cmd_send(hw, &desc, 1);
1072 }
1073
1074 static int
1075 hns3_pfc_pause_en_cfg(struct hns3_hw *hw, uint8_t pfc_bitmap, bool tx, bool rx)
1076 {
1077         struct hns3_cmd_desc desc;
1078         struct hns3_pfc_en_cmd *pfc = (struct hns3_pfc_en_cmd *)desc.data;
1079
1080         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_CFG_PFC_PAUSE_EN, false);
1081
1082         pfc->tx_rx_en_bitmap = (uint8_t)((tx ? HNS3_TX_MAC_PAUSE_EN_MSK : 0) |
1083                                         (rx ? HNS3_RX_MAC_PAUSE_EN_MSK : 0));
1084
1085         pfc->pri_en_bitmap = pfc_bitmap;
1086
1087         return hns3_cmd_send(hw, &desc, 1);
1088 }
1089
1090 static int
1091 hns3_qs_bp_cfg(struct hns3_hw *hw, uint8_t tc, uint8_t grp_id, uint32_t bit_map)
1092 {
1093         struct hns3_bp_to_qs_map_cmd *bp_to_qs_map_cmd;
1094         struct hns3_cmd_desc desc;
1095
1096         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_TM_BP_TO_QSET_MAPPING, false);
1097
1098         bp_to_qs_map_cmd = (struct hns3_bp_to_qs_map_cmd *)desc.data;
1099
1100         bp_to_qs_map_cmd->tc_id = tc;
1101         bp_to_qs_map_cmd->qs_group_id = grp_id;
1102         bp_to_qs_map_cmd->qs_bit_map = rte_cpu_to_le_32(bit_map);
1103
1104         return hns3_cmd_send(hw, &desc, 1);
1105 }
1106
1107 static void
1108 hns3_get_rx_tx_en_status(struct hns3_hw *hw, bool *tx_en, bool *rx_en)
1109 {
1110         switch (hw->current_mode) {
1111         case HNS3_FC_NONE:
1112                 *tx_en = false;
1113                 *rx_en = false;
1114                 break;
1115         case HNS3_FC_RX_PAUSE:
1116                 *tx_en = false;
1117                 *rx_en = true;
1118                 break;
1119         case HNS3_FC_TX_PAUSE:
1120                 *tx_en = true;
1121                 *rx_en = false;
1122                 break;
1123         case HNS3_FC_FULL:
1124                 *tx_en = true;
1125                 *rx_en = true;
1126                 break;
1127         default:
1128                 *tx_en = false;
1129                 *rx_en = false;
1130                 break;
1131         }
1132 }
1133
1134 static int
1135 hns3_mac_pause_setup_hw(struct hns3_hw *hw)
1136 {
1137         bool tx_en, rx_en;
1138
1139         if (hw->current_fc_status == HNS3_FC_STATUS_MAC_PAUSE)
1140                 hns3_get_rx_tx_en_status(hw, &tx_en, &rx_en);
1141         else {
1142                 tx_en = false;
1143                 rx_en = false;
1144         }
1145
1146         return hns3_mac_pause_en_cfg(hw, tx_en, rx_en);
1147 }
1148
1149 static int
1150 hns3_pfc_setup_hw(struct hns3_hw *hw)
1151 {
1152         bool tx_en, rx_en;
1153
1154         if (hw->current_fc_status == HNS3_FC_STATUS_PFC)
1155                 hns3_get_rx_tx_en_status(hw, &tx_en, &rx_en);
1156         else {
1157                 tx_en = false;
1158                 rx_en = false;
1159         }
1160
1161         return hns3_pfc_pause_en_cfg(hw, hw->dcb_info.pfc_en, tx_en, rx_en);
1162 }
1163
1164 /*
1165  * Each Tc has a 1024 queue sets to backpress, it divides to
1166  * 32 group, each group contains 32 queue sets, which can be
1167  * represented by uint32_t bitmap.
1168  */
1169 static int
1170 hns3_bp_setup_hw(struct hns3_hw *hw, uint8_t tc)
1171 {
1172         uint32_t qs_bitmap;
1173         int ret;
1174         int i;
1175
1176         for (i = 0; i < HNS3_BP_GRP_NUM; i++) {
1177                 uint8_t grp, sub_grp;
1178                 qs_bitmap = 0;
1179
1180                 grp = hns3_get_field(tc, HNS3_BP_GRP_ID_M, HNS3_BP_GRP_ID_S);
1181                 sub_grp = hns3_get_field(tc, HNS3_BP_SUB_GRP_ID_M,
1182                                          HNS3_BP_SUB_GRP_ID_S);
1183                 if (i == grp)
1184                         qs_bitmap |= (1 << sub_grp);
1185
1186                 ret = hns3_qs_bp_cfg(hw, tc, i, qs_bitmap);
1187                 if (ret)
1188                         return ret;
1189         }
1190
1191         return 0;
1192 }
1193
1194 static int
1195 hns3_dcb_bp_setup(struct hns3_hw *hw)
1196 {
1197         int ret, i;
1198
1199         for (i = 0; i < hw->dcb_info.num_tc; i++) {
1200                 ret = hns3_bp_setup_hw(hw, i);
1201                 if (ret)
1202                         return ret;
1203         }
1204
1205         return 0;
1206 }
1207
1208 static int
1209 hns3_dcb_pause_setup_hw(struct hns3_hw *hw)
1210 {
1211         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
1212         struct hns3_pf *pf = &hns->pf;
1213         int ret;
1214
1215         ret = hns3_pause_param_setup_hw(hw, pf->pause_time);
1216         if (ret) {
1217                 hns3_err(hw, "Fail to set pause parameter. ret = %d", ret);
1218                 return ret;
1219         }
1220
1221         ret = hns3_mac_pause_setup_hw(hw);
1222         if (ret) {
1223                 hns3_err(hw, "Fail to setup MAC pause. ret = %d", ret);
1224                 return ret;
1225         }
1226
1227         /* Only DCB-supported dev supports qset back pressure and pfc cmd */
1228         if (!hns3_dev_dcb_supported(hw))
1229                 return 0;
1230
1231         ret = hns3_pfc_setup_hw(hw);
1232         if (ret) {
1233                 hns3_err(hw, "config pfc failed! ret = %d", ret);
1234                 return ret;
1235         }
1236
1237         return hns3_dcb_bp_setup(hw);
1238 }
1239
1240 static uint8_t
1241 hns3_dcb_undrop_tc_map(struct hns3_hw *hw, uint8_t pfc_en)
1242 {
1243         uint8_t pfc_map = 0;
1244         uint8_t *prio_tc;
1245         uint8_t i, j;
1246
1247         prio_tc = hw->dcb_info.prio_tc;
1248         for (i = 0; i < hw->dcb_info.num_tc; i++) {
1249                 for (j = 0; j < HNS3_MAX_USER_PRIO; j++) {
1250                         if (prio_tc[j] == i && pfc_en & BIT(j)) {
1251                                 pfc_map |= BIT(i);
1252                                 break;
1253                         }
1254                 }
1255         }
1256
1257         return pfc_map;
1258 }
1259
1260 static void
1261 hns3_dcb_cfg_validate(struct hns3_adapter *hns, uint8_t *tc, bool *changed)
1262 {
1263         struct rte_eth_dcb_rx_conf *dcb_rx_conf;
1264         struct hns3_hw *hw = &hns->hw;
1265         uint8_t max_tc = 0;
1266         uint8_t pfc_en;
1267         int i;
1268
1269         dcb_rx_conf = &hw->data->dev_conf.rx_adv_conf.dcb_rx_conf;
1270         for (i = 0; i < HNS3_MAX_USER_PRIO; i++) {
1271                 if (dcb_rx_conf->dcb_tc[i] != hw->dcb_info.prio_tc[i])
1272                         *changed = true;
1273
1274                 if (dcb_rx_conf->dcb_tc[i] > max_tc)
1275                         max_tc = dcb_rx_conf->dcb_tc[i];
1276         }
1277         *tc = max_tc + 1;
1278         if (*tc != hw->dcb_info.num_tc)
1279                 *changed = true;
1280
1281         /*
1282          * We ensure that dcb information can be reconfigured
1283          * after the hns3_priority_flow_ctrl_set function called.
1284          */
1285         if (hw->current_mode != HNS3_FC_FULL)
1286                 *changed = true;
1287         pfc_en = RTE_LEN2MASK((uint8_t)dcb_rx_conf->nb_tcs, uint8_t);
1288         if (hw->dcb_info.pfc_en != pfc_en)
1289                 *changed = true;
1290 }
1291
1292 static void
1293 hns3_dcb_info_cfg(struct hns3_adapter *hns)
1294 {
1295         struct rte_eth_dcb_rx_conf *dcb_rx_conf;
1296         struct hns3_pf *pf = &hns->pf;
1297         struct hns3_hw *hw = &hns->hw;
1298         uint8_t tc_bw, bw_rest;
1299         uint8_t i, j;
1300
1301         dcb_rx_conf = &hw->data->dev_conf.rx_adv_conf.dcb_rx_conf;
1302         pf->local_max_tc = (uint8_t)dcb_rx_conf->nb_tcs;
1303         pf->pfc_max = (uint8_t)dcb_rx_conf->nb_tcs;
1304
1305         /* Config pg0 */
1306         memset(hw->dcb_info.pg_info, 0,
1307                sizeof(struct hns3_pg_info) * HNS3_PG_NUM);
1308         hw->dcb_info.pg_dwrr[0] = BW_MAX_PERCENT;
1309         hw->dcb_info.pg_info[0].pg_id = 0;
1310         hw->dcb_info.pg_info[0].pg_sch_mode = HNS3_SCH_MODE_DWRR;
1311         hw->dcb_info.pg_info[0].bw_limit = HNS3_ETHER_MAX_RATE;
1312         hw->dcb_info.pg_info[0].tc_bit_map = hw->hw_tc_map;
1313
1314         /* Each tc has same bw for valid tc by default */
1315         tc_bw = BW_MAX_PERCENT / hw->dcb_info.num_tc;
1316         for (i = 0; i < hw->dcb_info.num_tc; i++)
1317                 hw->dcb_info.pg_info[0].tc_dwrr[i] = tc_bw;
1318         /* To ensure the sum of tc_dwrr is equal to 100 */
1319         bw_rest = BW_MAX_PERCENT % hw->dcb_info.num_tc;
1320         for (j = 0; j < bw_rest; j++)
1321                 hw->dcb_info.pg_info[0].tc_dwrr[j]++;
1322         for (; i < dcb_rx_conf->nb_tcs; i++)
1323                 hw->dcb_info.pg_info[0].tc_dwrr[i] = 0;
1324
1325         /* All tcs map to pg0 */
1326         memset(hw->dcb_info.tc_info, 0,
1327                sizeof(struct hns3_tc_info) * HNS3_MAX_TC_NUM);
1328         for (i = 0; i < hw->dcb_info.num_tc; i++) {
1329                 hw->dcb_info.tc_info[i].tc_id = i;
1330                 hw->dcb_info.tc_info[i].tc_sch_mode = HNS3_SCH_MODE_DWRR;
1331                 hw->dcb_info.tc_info[i].pgid = 0;
1332                 hw->dcb_info.tc_info[i].bw_limit =
1333                                         hw->dcb_info.pg_info[0].bw_limit;
1334         }
1335
1336         for (i = 0; i < HNS3_MAX_USER_PRIO; i++)
1337                 hw->dcb_info.prio_tc[i] = dcb_rx_conf->dcb_tc[i];
1338
1339         hns3_dcb_update_tc_queue_mapping(hw, hw->data->nb_rx_queues,
1340                                          hw->data->nb_tx_queues);
1341 }
1342
1343 static int
1344 hns3_dcb_info_update(struct hns3_adapter *hns, uint8_t num_tc)
1345 {
1346         struct hns3_pf *pf = &hns->pf;
1347         struct hns3_hw *hw = &hns->hw;
1348         uint16_t nb_rx_q = hw->data->nb_rx_queues;
1349         uint16_t nb_tx_q = hw->data->nb_tx_queues;
1350         uint8_t bit_map = 0;
1351         uint8_t i;
1352
1353         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE &&
1354             hw->dcb_info.num_pg != 1)
1355                 return -EINVAL;
1356
1357         if (nb_rx_q < num_tc) {
1358                 hns3_err(hw, "number of Rx queues(%d) is less than tcs(%d).",
1359                          nb_rx_q, num_tc);
1360                 return -EINVAL;
1361         }
1362
1363         if (nb_tx_q < num_tc) {
1364                 hns3_err(hw, "number of Tx queues(%d) is less than tcs(%d).",
1365                          nb_tx_q, num_tc);
1366                 return -EINVAL;
1367         }
1368
1369         /* Currently not support uncontinuous tc */
1370         hw->dcb_info.num_tc = num_tc;
1371         for (i = 0; i < hw->dcb_info.num_tc; i++)
1372                 bit_map |= BIT(i);
1373
1374         if (!bit_map) {
1375                 bit_map = 1;
1376                 hw->dcb_info.num_tc = 1;
1377         }
1378         hw->hw_tc_map = bit_map;
1379         hns3_dcb_info_cfg(hns);
1380
1381         return 0;
1382 }
1383
1384 static int
1385 hns3_dcb_hw_configure(struct hns3_adapter *hns)
1386 {
1387         struct rte_eth_dcb_rx_conf *dcb_rx_conf;
1388         struct hns3_pf *pf = &hns->pf;
1389         struct hns3_hw *hw = &hns->hw;
1390         enum hns3_fc_status fc_status = hw->current_fc_status;
1391         enum hns3_fc_mode current_mode = hw->current_mode;
1392         uint8_t hw_pfc_map = hw->dcb_info.hw_pfc_map;
1393         int ret, status;
1394
1395         if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE &&
1396             pf->tx_sch_mode != HNS3_FLAG_VNET_BASE_SCH_MODE)
1397                 return -ENOTSUP;
1398
1399         ret = hns3_dcb_schd_setup_hw(hw);
1400         if (ret) {
1401                 hns3_err(hw, "dcb schdule configure failed! ret = %d", ret);
1402                 return ret;
1403         }
1404
1405         if (hw->data->dev_conf.dcb_capability_en & ETH_DCB_PFC_SUPPORT) {
1406                 dcb_rx_conf = &hw->data->dev_conf.rx_adv_conf.dcb_rx_conf;
1407                 if (dcb_rx_conf->nb_tcs == 0)
1408                         hw->dcb_info.pfc_en = 1; /* tc0 only */
1409                 else
1410                         hw->dcb_info.pfc_en =
1411                         RTE_LEN2MASK((uint8_t)dcb_rx_conf->nb_tcs, uint8_t);
1412
1413                 hw->dcb_info.hw_pfc_map =
1414                                 hns3_dcb_undrop_tc_map(hw, hw->dcb_info.pfc_en);
1415
1416                 ret = hns3_buffer_alloc(hw);
1417                 if (ret)
1418                         return ret;
1419
1420                 hw->current_fc_status = HNS3_FC_STATUS_PFC;
1421                 hw->current_mode = HNS3_FC_FULL;
1422                 ret = hns3_dcb_pause_setup_hw(hw);
1423                 if (ret) {
1424                         hns3_err(hw, "setup pfc failed! ret = %d", ret);
1425                         goto pfc_setup_fail;
1426                 }
1427         } else {
1428                 /*
1429                  * Although dcb_capability_en is lack of ETH_DCB_PFC_SUPPORT
1430                  * flag, the DCB information is configured, such as tc numbers.
1431                  * Therefore, refreshing the allocation of packet buffer is
1432                  * necessary.
1433                  */
1434                 ret = hns3_buffer_alloc(hw);
1435                 if (ret)
1436                         return ret;
1437         }
1438
1439         return 0;
1440
1441 pfc_setup_fail:
1442         hw->current_mode = current_mode;
1443         hw->current_fc_status = fc_status;
1444         hw->dcb_info.hw_pfc_map = hw_pfc_map;
1445         status = hns3_buffer_alloc(hw);
1446         if (status)
1447                 hns3_err(hw, "recover packet buffer fail! status = %d", status);
1448
1449         return ret;
1450 }
1451
1452 /*
1453  * hns3_dcb_configure - setup dcb related config
1454  * @hns: pointer to hns3 adapter
1455  * Returns 0 on success, negative value on failure.
1456  */
1457 int
1458 hns3_dcb_configure(struct hns3_adapter *hns)
1459 {
1460         struct hns3_hw *hw = &hns->hw;
1461         bool map_changed = false;
1462         uint8_t num_tc = 0;
1463         int ret;
1464
1465         hns3_dcb_cfg_validate(hns, &num_tc, &map_changed);
1466         if (map_changed || rte_atomic16_read(&hw->reset.resetting)) {
1467                 ret = hns3_dcb_info_update(hns, num_tc);
1468                 if (ret) {
1469                         hns3_err(hw, "dcb info update failed: %d", ret);
1470                         return ret;
1471                 }
1472
1473                 ret = hns3_dcb_hw_configure(hns);
1474                 if (ret) {
1475                         hns3_err(hw, "dcb sw configure failed: %d", ret);
1476                         return ret;
1477                 }
1478         }
1479
1480         return 0;
1481 }
1482
1483 int
1484 hns3_dcb_init_hw(struct hns3_hw *hw)
1485 {
1486         int ret;
1487
1488         ret = hns3_dcb_schd_setup_hw(hw);
1489         if (ret) {
1490                 hns3_err(hw, "dcb schedule setup failed: %d", ret);
1491                 return ret;
1492         }
1493
1494         ret = hns3_dcb_pause_setup_hw(hw);
1495         if (ret)
1496                 hns3_err(hw, "PAUSE setup failed: %d", ret);
1497
1498         return ret;
1499 }
1500
1501 int
1502 hns3_dcb_init(struct hns3_hw *hw)
1503 {
1504         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
1505         struct hns3_pf *pf = &hns->pf;
1506         int ret;
1507
1508         PMD_INIT_FUNC_TRACE();
1509
1510         /*
1511          * According to the 'adapter_state' identifier, the following branch
1512          * is only executed to initialize default configurations of dcb during
1513          * the initializing driver process. Due to driver saving dcb-related
1514          * information before reset triggered, the reinit dev stage of the
1515          * reset process can not access to the branch, or those information
1516          * will be changed.
1517          */
1518         if (hw->adapter_state == HNS3_NIC_UNINITIALIZED) {
1519                 hw->requested_mode = HNS3_FC_NONE;
1520                 hw->current_mode = hw->requested_mode;
1521                 pf->pause_time = HNS3_DEFAULT_PAUSE_TRANS_TIME;
1522                 hw->current_fc_status = HNS3_FC_STATUS_NONE;
1523
1524                 ret = hns3_dcb_info_init(hw);
1525                 if (ret) {
1526                         hns3_err(hw, "dcb info init failed: %d", ret);
1527                         return ret;
1528                 }
1529                 hns3_dcb_update_tc_queue_mapping(hw, hw->tqps_num,
1530                                                  hw->tqps_num);
1531         }
1532
1533         /*
1534          * DCB hardware will be configured by following the function during
1535          * the initializing driver process and the reset process. However,
1536          * driver will restore directly configurations of dcb hardware based
1537          * on dcb-related information soft maintained when driver
1538          * initialization has finished and reset is coming.
1539          */
1540         ret = hns3_dcb_init_hw(hw);
1541         if (ret) {
1542                 hns3_err(hw, "dcb init hardware failed: %d", ret);
1543                 return ret;
1544         }
1545
1546         return 0;
1547 }
1548
1549 static int
1550 hns3_update_queue_map_configure(struct hns3_adapter *hns)
1551 {
1552         struct hns3_hw *hw = &hns->hw;
1553         uint16_t nb_rx_q = hw->data->nb_rx_queues;
1554         uint16_t nb_tx_q = hw->data->nb_tx_queues;
1555         int ret;
1556
1557         hns3_dcb_update_tc_queue_mapping(hw, nb_rx_q, nb_tx_q);
1558         ret = hns3_q_to_qs_map(hw);
1559         if (ret)
1560                 hns3_err(hw, "failed to map nq to qs! ret = %d", ret);
1561
1562         return ret;
1563 }
1564
1565 int
1566 hns3_dcb_cfg_update(struct hns3_adapter *hns)
1567 {
1568         struct hns3_hw *hw = &hns->hw;
1569         enum rte_eth_rx_mq_mode mq_mode = hw->data->dev_conf.rxmode.mq_mode;
1570         int ret;
1571
1572         if ((uint32_t)mq_mode & ETH_MQ_RX_DCB_FLAG) {
1573                 ret = hns3_dcb_configure(hns);
1574                 if (ret)
1575                         hns3_err(hw, "Failed to config dcb: %d", ret);
1576         } else {
1577                 /*
1578                  * Update queue map without PFC configuration,
1579                  * due to queues reconfigured by user.
1580                  */
1581                 ret = hns3_update_queue_map_configure(hns);
1582                 if (ret)
1583                         hns3_err(hw,
1584                                  "Failed to update queue mapping configure: %d",
1585                                  ret);
1586         }
1587
1588         return ret;
1589 }
1590
1591 /*
1592  * hns3_dcb_pfc_enable - Enable priority flow control
1593  * @dev: pointer to ethernet device
1594  *
1595  * Configures the pfc settings for one porority.
1596  */
1597 int
1598 hns3_dcb_pfc_enable(struct rte_eth_dev *dev, struct rte_eth_pfc_conf *pfc_conf)
1599 {
1600         struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1601         struct hns3_pf *pf = HNS3_DEV_PRIVATE_TO_PF(dev->data->dev_private);
1602         enum hns3_fc_status fc_status = hw->current_fc_status;
1603         enum hns3_fc_mode current_mode = hw->current_mode;
1604         uint8_t hw_pfc_map = hw->dcb_info.hw_pfc_map;
1605         uint8_t pfc_en = hw->dcb_info.pfc_en;
1606         uint8_t priority = pfc_conf->priority;
1607         uint16_t pause_time = pf->pause_time;
1608         int ret, status;
1609
1610         pf->pause_time = pfc_conf->fc.pause_time;
1611         hw->current_mode = hw->requested_mode;
1612         hw->current_fc_status = HNS3_FC_STATUS_PFC;
1613         hw->dcb_info.pfc_en |= BIT(priority);
1614         hw->dcb_info.hw_pfc_map =
1615                         hns3_dcb_undrop_tc_map(hw, hw->dcb_info.pfc_en);
1616         ret = hns3_buffer_alloc(hw);
1617         if (ret)
1618                 goto pfc_setup_fail;
1619
1620         /*
1621          * The flow control mode of all UPs will be changed based on
1622          * current_mode coming from user.
1623          */
1624         ret = hns3_dcb_pause_setup_hw(hw);
1625         if (ret) {
1626                 hns3_err(hw, "enable pfc failed! ret = %d", ret);
1627                 goto pfc_setup_fail;
1628         }
1629
1630         return 0;
1631
1632 pfc_setup_fail:
1633         hw->current_mode = current_mode;
1634         hw->current_fc_status = fc_status;
1635         pf->pause_time = pause_time;
1636         hw->dcb_info.pfc_en = pfc_en;
1637         hw->dcb_info.hw_pfc_map = hw_pfc_map;
1638         status = hns3_buffer_alloc(hw);
1639         if (status)
1640                 hns3_err(hw, "recover packet buffer fail: %d", status);
1641
1642         return ret;
1643 }
1644
1645 /*
1646  * hns3_fc_enable - Enable MAC pause
1647  * @dev: pointer to ethernet device
1648  *
1649  * Configures the MAC pause settings.
1650  */
1651 int
1652 hns3_fc_enable(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1653 {
1654         struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
1655         struct hns3_pf *pf = HNS3_DEV_PRIVATE_TO_PF(dev->data->dev_private);
1656         enum hns3_fc_status fc_status = hw->current_fc_status;
1657         enum hns3_fc_mode current_mode = hw->current_mode;
1658         uint16_t pause_time = pf->pause_time;
1659         int ret;
1660
1661         pf->pause_time = fc_conf->pause_time;
1662         hw->current_mode = hw->requested_mode;
1663
1664         /*
1665          * In fact, current_fc_status is HNS3_FC_STATUS_NONE when mode
1666          * of flow control is configured to be HNS3_FC_NONE.
1667          */
1668         if (hw->current_mode == HNS3_FC_NONE)
1669                 hw->current_fc_status = HNS3_FC_STATUS_NONE;
1670         else
1671                 hw->current_fc_status = HNS3_FC_STATUS_MAC_PAUSE;
1672
1673         ret = hns3_dcb_pause_setup_hw(hw);
1674         if (ret) {
1675                 hns3_err(hw, "enable MAC Pause failed! ret = %d", ret);
1676                 goto setup_fc_fail;
1677         }
1678
1679         return 0;
1680
1681 setup_fc_fail:
1682         hw->current_mode = current_mode;
1683         hw->current_fc_status = fc_status;
1684         pf->pause_time = pause_time;
1685
1686         return ret;
1687 }