drivers/net/qede/qede_rxtx.c

   1 /*
   2  * Copyright (c) 2016 QLogic Corporation.
   3  * All rights reserved.
   4  * www.qlogic.com
   5  *
   6  * See LICENSE.qede_pmd for copyright and licensing details.
   7  */
   8
   9 #include "qede_rxtx.h"
  10
  11 static bool gro_disable = 1;    /* mod_param */
  12
  13 static inline int qede_alloc_rx_buffer(struct qede_rx_queue *rxq)
  14 {
  15         struct rte_mbuf *new_mb = NULL;
  16         struct eth_rx_bd *rx_bd;
  17         dma_addr_t mapping;
  18         uint16_t idx = rxq->sw_rx_prod & NUM_RX_BDS(rxq);
  19
  20         new_mb = rte_mbuf_raw_alloc(rxq->mb_pool);
  21         if (unlikely(!new_mb)) {
  22                 PMD_RX_LOG(ERR, rxq,
  23                            "Failed to allocate rx buffer "
  24                            "sw_rx_prod %u sw_rx_cons %u mp entries %u free %u",
  25                            idx, rxq->sw_rx_cons & NUM_RX_BDS(rxq),
  26                            rte_mempool_count(rxq->mb_pool),
  27                            rte_mempool_free_count(rxq->mb_pool));
  28                 return -ENOMEM;
  29         }
  30         rxq->sw_rx_ring[idx].mbuf = new_mb;
  31         rxq->sw_rx_ring[idx].page_offset = 0;
  32         mapping = rte_mbuf_data_dma_addr_default(new_mb);
  33         /* Advance PROD and get BD pointer */
  34         rx_bd = (struct eth_rx_bd *)ecore_chain_produce(&rxq->rx_bd_ring);
  35         rx_bd->addr.hi = rte_cpu_to_le_32(U64_HI(mapping));
  36         rx_bd->addr.lo = rte_cpu_to_le_32(U64_LO(mapping));
  37         rxq->sw_rx_prod++;
  38         return 0;
  39 }
  40
  41 static void qede_rx_queue_release_mbufs(struct qede_rx_queue *rxq)
  42 {
  43         uint16_t i;
  44
  45         if (rxq->sw_rx_ring != NULL) {
  46                 for (i = 0; i < rxq->nb_rx_desc; i++) {
  47                         if (rxq->sw_rx_ring[i].mbuf != NULL) {
  48                                 rte_pktmbuf_free(rxq->sw_rx_ring[i].mbuf);
  49                                 rxq->sw_rx_ring[i].mbuf = NULL;
  50                         }
  51                 }
  52         }
  53 }
  54
  55 void qede_rx_queue_release(void *rx_queue)
  56 {
  57         struct qede_rx_queue *rxq = rx_queue;
  58
  59         if (rxq != NULL) {
  60                 qede_rx_queue_release_mbufs(rxq);
  61                 rte_free(rxq->sw_rx_ring);
  62                 rxq->sw_rx_ring = NULL;
  63                 rte_free(rxq);
  64                 rx_queue = NULL;
  65         }
  66 }
  67
  68 int
  69 qede_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
  70                     uint16_t nb_desc, unsigned int socket_id,
  71                     const struct rte_eth_rxconf *rx_conf,
  72                     struct rte_mempool *mp)
  73 {
  74         struct qede_dev *qdev = dev->data->dev_private;
  75         struct ecore_dev *edev = &qdev->edev;
  76         struct rte_eth_dev_data *eth_data = dev->data;
  77         struct qede_rx_queue *rxq;
  78         uint16_t pkt_len = (uint16_t)dev->data->dev_conf.rxmode.max_rx_pkt_len;
  79         size_t size;
  80         uint16_t data_size;
  81         int rc;
  82         int i;
  83
  84         PMD_INIT_FUNC_TRACE(edev);
  85
  86         /* Note: Ring size/align is controlled by struct rte_eth_desc_lim */
  87         if (!rte_is_power_of_2(nb_desc)) {
  88                 DP_ERR(edev, "Ring size %u is not power of 2\n",
  89                           nb_desc);
  90                 return -EINVAL;
  91         }
  92
  93         /* Free memory prior to re-allocation if needed... */
  94         if (dev->data->rx_queues[queue_idx] != NULL) {
  95                 qede_rx_queue_release(dev->data->rx_queues[queue_idx]);
  96                 dev->data->rx_queues[queue_idx] = NULL;
  97         }
  98
  99         /* First allocate the rx queue data structure */
 100         rxq = rte_zmalloc_socket("qede_rx_queue", sizeof(struct qede_rx_queue),
 101                                  RTE_CACHE_LINE_SIZE, socket_id);
 102
 103         if (!rxq) {
 104                 DP_ERR(edev, "Unable to allocate memory for rxq on socket %u",
 105                           socket_id);
 106                 return -ENOMEM;
 107         }
 108
 109         rxq->qdev = qdev;
 110         rxq->mb_pool = mp;
 111         rxq->nb_rx_desc = nb_desc;
 112         rxq->queue_id = queue_idx;
 113         rxq->port_id = dev->data->port_id;
 114
 115         /* Sanity check */
 116         data_size = (uint16_t)rte_pktmbuf_data_room_size(mp) -
 117                                 RTE_PKTMBUF_HEADROOM;
 118
 119         if (pkt_len > data_size) {
 120                 DP_ERR(edev, "MTU %u should not exceed dataroom %u\n",
 121                        pkt_len, data_size);
 122                 rte_free(rxq);
 123                 return -EINVAL;
 124         }
 125
 126         qdev->mtu = pkt_len;
 127         rxq->rx_buf_size = pkt_len + QEDE_ETH_OVERHEAD;
 128
 129         DP_INFO(edev, "MTU = %u ; RX buffer = %u\n",
 130                 qdev->mtu, rxq->rx_buf_size);
 131
 132         if (pkt_len > ETHER_MAX_LEN) {
 133                 dev->data->dev_conf.rxmode.jumbo_frame = 1;
 134                 DP_NOTICE(edev, false, "jumbo frame enabled\n");
 135         } else {
 136                 dev->data->dev_conf.rxmode.jumbo_frame = 0;
 137         }
 138
 139         /* Allocate the parallel driver ring for Rx buffers */
 140         size = sizeof(*rxq->sw_rx_ring) * rxq->nb_rx_desc;
 141         rxq->sw_rx_ring = rte_zmalloc_socket("sw_rx_ring", size,
 142                                              RTE_CACHE_LINE_SIZE, socket_id);
 143         if (!rxq->sw_rx_ring) {
 144                 DP_NOTICE(edev, false,
 145                           "Unable to alloc memory for sw_rx_ring on socket %u\n",
 146                           socket_id);
 147                 rte_free(rxq);
 148                 rxq = NULL;
 149                 return -ENOMEM;
 150         }
 151
 152         /* Allocate FW Rx ring  */
 153         rc = qdev->ops->common->chain_alloc(edev,
 154                                             ECORE_CHAIN_USE_TO_CONSUME_PRODUCE,
 155                                             ECORE_CHAIN_MODE_NEXT_PTR,
 156                                             ECORE_CHAIN_CNT_TYPE_U16,
 157                                             rxq->nb_rx_desc,
 158                                             sizeof(struct eth_rx_bd),
 159                                             &rxq->rx_bd_ring);
 160
 161         if (rc != ECORE_SUCCESS) {
 162                 DP_NOTICE(edev, false,
 163                           "Unable to alloc memory for rxbd ring on socket %u\n",
 164                           socket_id);
 165                 rte_free(rxq->sw_rx_ring);
 166                 rxq->sw_rx_ring = NULL;
 167                 rte_free(rxq);
 168                 rxq = NULL;
 169         }
 170
 171         /* Allocate FW completion ring */
 172         rc = qdev->ops->common->chain_alloc(edev,
 173                                             ECORE_CHAIN_USE_TO_CONSUME,
 174                                             ECORE_CHAIN_MODE_PBL,
 175                                             ECORE_CHAIN_CNT_TYPE_U16,
 176                                             rxq->nb_rx_desc,
 177                                             sizeof(union eth_rx_cqe),
 178                                             &rxq->rx_comp_ring);
 179
 180         if (rc != ECORE_SUCCESS) {
 181                 DP_NOTICE(edev, false,
 182                           "Unable to alloc memory for cqe ring on socket %u\n",
 183                           socket_id);
 184                 /* TBD: Freeing RX BD ring */
 185                 rte_free(rxq->sw_rx_ring);
 186                 rxq->sw_rx_ring = NULL;
 187                 rte_free(rxq);
 188         }
 189
 190         /* Allocate buffers for the Rx ring */
 191         for (i = 0; i < rxq->nb_rx_desc; i++) {
 192                 rc = qede_alloc_rx_buffer(rxq);
 193                 if (rc) {
 194                         DP_NOTICE(edev, false,
 195                                   "RX buffer allocation failed at idx=%d\n", i);
 196                         goto err4;
 197                 }
 198         }
 199
 200         dev->data->rx_queues[queue_idx] = rxq;
 201         if (!qdev->rx_queues)
 202                 qdev->rx_queues = (struct qede_rx_queue **)dev->data->rx_queues;
 203
 204         DP_INFO(edev, "rxq %d num_desc %u rx_buf_size=%u socket %u\n",
 205                   queue_idx, nb_desc, qdev->mtu, socket_id);
 206
 207         return 0;
 208 err4:
 209         qede_rx_queue_release(rxq);
 210         return -ENOMEM;
 211 }
 212
 213 static void qede_tx_queue_release_mbufs(struct qede_tx_queue *txq)
 214 {
 215         unsigned int i;
 216
 217         PMD_TX_LOG(DEBUG, txq, "releasing %u mbufs\n", txq->nb_tx_desc);
 218
 219         if (txq->sw_tx_ring != NULL) {
 220                 for (i = 0; i < txq->nb_tx_desc; i++) {
 221                         if (txq->sw_tx_ring[i].mbuf != NULL) {
 222                                 rte_pktmbuf_free(txq->sw_tx_ring[i].mbuf);
 223                                 txq->sw_tx_ring[i].mbuf = NULL;
 224                         }
 225                 }
 226         }
 227 }
 228
 229 void qede_tx_queue_release(void *tx_queue)
 230 {
 231         struct qede_tx_queue *txq = tx_queue;
 232
 233         if (txq != NULL) {
 234                 qede_tx_queue_release_mbufs(txq);
 235                 if (txq->sw_tx_ring) {
 236                         rte_free(txq->sw_tx_ring);
 237                         txq->sw_tx_ring = NULL;
 238                 }
 239                 rte_free(txq);
 240         }
 241         tx_queue = NULL;
 242 }
 243
 244 int
 245 qede_tx_queue_setup(struct rte_eth_dev *dev,
 246                     uint16_t queue_idx,
 247                     uint16_t nb_desc,
 248                     unsigned int socket_id,
 249                     const struct rte_eth_txconf *tx_conf)
 250 {
 251         struct qede_dev *qdev = dev->data->dev_private;
 252         struct ecore_dev *edev = &qdev->edev;
 253         struct qede_tx_queue *txq;
 254         int rc;
 255
 256         PMD_INIT_FUNC_TRACE(edev);
 257
 258         if (!rte_is_power_of_2(nb_desc)) {
 259                 DP_ERR(edev, "Ring size %u is not power of 2\n",
 260                        nb_desc);
 261                 return -EINVAL;
 262         }
 263
 264         /* Free memory prior to re-allocation if needed... */
 265         if (dev->data->tx_queues[queue_idx] != NULL) {
 266                 qede_tx_queue_release(dev->data->tx_queues[queue_idx]);
 267                 dev->data->tx_queues[queue_idx] = NULL;
 268         }
 269
 270         txq = rte_zmalloc_socket("qede_tx_queue", sizeof(struct qede_tx_queue),
 271                                  RTE_CACHE_LINE_SIZE, socket_id);
 272
 273         if (txq == NULL) {
 274                 DP_ERR(edev,
 275                        "Unable to allocate memory for txq on socket %u",
 276                        socket_id);
 277                 return -ENOMEM;
 278         }
 279
 280         txq->nb_tx_desc = nb_desc;
 281         txq->qdev = qdev;
 282         txq->port_id = dev->data->port_id;
 283
 284         rc = qdev->ops->common->chain_alloc(edev,
 285                                             ECORE_CHAIN_USE_TO_CONSUME_PRODUCE,
 286                                             ECORE_CHAIN_MODE_PBL,
 287                                             ECORE_CHAIN_CNT_TYPE_U16,
 288                                             txq->nb_tx_desc,
 289                                             sizeof(union eth_tx_bd_types),
 290                                             &txq->tx_pbl);
 291         if (rc != ECORE_SUCCESS) {
 292                 DP_ERR(edev,
 293                        "Unable to allocate memory for txbd ring on socket %u",
 294                        socket_id);
 295                 qede_tx_queue_release(txq);
 296                 return -ENOMEM;
 297         }
 298
 299         /* Allocate software ring */
 300         txq->sw_tx_ring = rte_zmalloc_socket("txq->sw_tx_ring",
 301                                              (sizeof(struct qede_tx_entry) *
 302                                               txq->nb_tx_desc),
 303                                              RTE_CACHE_LINE_SIZE, socket_id);
 304
 305         if (!txq->sw_tx_ring) {
 306                 DP_ERR(edev,
 307                        "Unable to allocate memory for txbd ring on socket %u",
 308                        socket_id);
 309                 qede_tx_queue_release(txq);
 310                 return -ENOMEM;
 311         }
 312
 313         txq->queue_id = queue_idx;
 314
 315         txq->nb_tx_avail = txq->nb_tx_desc;
 316
 317         txq->tx_free_thresh =
 318             tx_conf->tx_free_thresh ? tx_conf->tx_free_thresh :
 319             (txq->nb_tx_desc - QEDE_DEFAULT_TX_FREE_THRESH);
 320
 321         dev->data->tx_queues[queue_idx] = txq;
 322         if (!qdev->tx_queues)
 323                 qdev->tx_queues = (struct qede_tx_queue **)dev->data->tx_queues;
 324
 325         txq->txq_counter = 0;
 326
 327         DP_INFO(edev,
 328                   "txq %u num_desc %u tx_free_thresh %u socket %u\n",
 329                   queue_idx, nb_desc, txq->tx_free_thresh, socket_id);
 330
 331         return 0;
 332 }
 333
 334 /* This function inits fp content and resets the SB, RXQ and TXQ arrays */
 335 static void qede_init_fp(struct qede_dev *qdev)
 336 {
 337         struct qede_fastpath *fp;
 338         int rss_id, txq_index, tc;
 339
 340         memset((void *)qdev->fp_array, 0, (QEDE_RSS_CNT(qdev) *
 341                                            sizeof(*qdev->fp_array)));
 342         memset((void *)qdev->sb_array, 0, (QEDE_RSS_CNT(qdev) *
 343                                            sizeof(*qdev->sb_array)));
 344         for_each_rss(rss_id) {
 345                 fp = &qdev->fp_array[rss_id];
 346
 347                 fp->qdev = qdev;
 348                 fp->rss_id = rss_id;
 349
 350                 /* Point rxq to generic rte queues that was created
 351                  * as part of queue creation.
 352                  */
 353                 fp->rxq = qdev->rx_queues[rss_id];
 354                 fp->sb_info = &qdev->sb_array[rss_id];
 355
 356                 for (tc = 0; tc < qdev->num_tc; tc++) {
 357                         txq_index = tc * QEDE_RSS_CNT(qdev) + rss_id;
 358                         fp->txqs[tc] = qdev->tx_queues[txq_index];
 359                         fp->txqs[tc]->queue_id = txq_index;
 360                         /* Updating it to main structure */
 361                         snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
 362                                  "qdev", rss_id);
 363                 }
 364         }
 365
 366         qdev->gro_disable = gro_disable;
 367 }
 368
 369 void qede_free_fp_arrays(struct qede_dev *qdev)
 370 {
 371         /* It asseumes qede_free_mem_load() is called before */
 372         if (qdev->fp_array != NULL) {
 373                 rte_free(qdev->fp_array);
 374                 qdev->fp_array = NULL;
 375         }
 376
 377         if (qdev->sb_array != NULL) {
 378                 rte_free(qdev->sb_array);
 379                 qdev->sb_array = NULL;
 380         }
 381 }
 382
 383 int qede_alloc_fp_array(struct qede_dev *qdev)
 384 {
 385         struct qede_fastpath *fp;
 386         struct ecore_dev *edev = &qdev->edev;
 387         int i;
 388
 389         qdev->fp_array = rte_calloc("fp", QEDE_RSS_CNT(qdev),
 390                                     sizeof(*qdev->fp_array),
 391                                     RTE_CACHE_LINE_SIZE);
 392
 393         if (!qdev->fp_array) {
 394                 DP_ERR(edev, "fp array allocation failed\n");
 395                 return -ENOMEM;
 396         }
 397
 398         qdev->sb_array = rte_calloc("sb", QEDE_RSS_CNT(qdev),
 399                                     sizeof(*qdev->sb_array),
 400                                     RTE_CACHE_LINE_SIZE);
 401
 402         if (!qdev->sb_array) {
 403                 DP_ERR(edev, "sb array allocation failed\n");
 404                 rte_free(qdev->fp_array);
 405                 return -ENOMEM;
 406         }
 407
 408         return 0;
 409 }
 410
 411 /* This function allocates fast-path status block memory */
 412 static int
 413 qede_alloc_mem_sb(struct qede_dev *qdev, struct ecore_sb_info *sb_info,
 414                   uint16_t sb_id)
 415 {
 416         struct ecore_dev *edev = &qdev->edev;
 417         struct status_block *sb_virt;
 418         dma_addr_t sb_phys;
 419         int rc;
 420
 421         sb_virt = OSAL_DMA_ALLOC_COHERENT(edev, &sb_phys, sizeof(*sb_virt));
 422
 423         if (!sb_virt) {
 424                 DP_ERR(edev, "Status block allocation failed\n");
 425                 return -ENOMEM;
 426         }
 427
 428         rc = qdev->ops->common->sb_init(edev, sb_info,
 429                                         sb_virt, sb_phys, sb_id,
 430                                         QED_SB_TYPE_L2_QUEUE);
 431         if (rc) {
 432                 DP_ERR(edev, "Status block initialization failed\n");
 433                 /* TBD: No dma_free_coherent possible */
 434                 return rc;
 435         }
 436
 437         return 0;
 438 }
 439
 440 static int qede_alloc_mem_fp(struct qede_dev *qdev, struct qede_fastpath *fp)
 441 {
 442         return qede_alloc_mem_sb(qdev, fp->sb_info, fp->rss_id);
 443 }
 444
 445 static void qede_shrink_txq(struct qede_dev *qdev, uint16_t num_rss)
 446 {
 447         /* @@@TBD - this should also re-set the qed interrupts */
 448 }
 449
 450 /* This function allocates all qede memory at NIC load. */
 451 static int qede_alloc_mem_load(struct qede_dev *qdev)
 452 {
 453         int rc = 0, rss_id;
 454         struct ecore_dev *edev = &qdev->edev;
 455
 456         for (rss_id = 0; rss_id < QEDE_RSS_CNT(qdev); rss_id++) {
 457                 struct qede_fastpath *fp = &qdev->fp_array[rss_id];
 458
 459                 rc = qede_alloc_mem_fp(qdev, fp);
 460                 if (rc)
 461                         break;
 462         }
 463
 464         if (rss_id != QEDE_RSS_CNT(qdev)) {
 465                 /* Failed allocating memory for all the queues */
 466                 if (!rss_id) {
 467                         DP_ERR(edev,
 468                                "Failed to alloc memory for leading queue\n");
 469                         rc = -ENOMEM;
 470                 } else {
 471                         DP_NOTICE(edev, false,
 472                                   "Failed to allocate memory for all of "
 473                                   "RSS queues\n"
 474                                   "Desired: %d queues, allocated: %d queues\n",
 475                                   QEDE_RSS_CNT(qdev), rss_id);
 476                         qede_shrink_txq(qdev, rss_id);
 477                 }
 478                 qdev->num_rss = rss_id;
 479         }
 480
 481         return 0;
 482 }
 483
 484 static inline void
 485 qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq)
 486 {
 487         uint16_t bd_prod = ecore_chain_get_prod_idx(&rxq->rx_bd_ring);
 488         uint16_t cqe_prod = ecore_chain_get_prod_idx(&rxq->rx_comp_ring);
 489         struct eth_rx_prod_data rx_prods = { 0 };
 490
 491         /* Update producers */
 492         rx_prods.bd_prod = rte_cpu_to_le_16(bd_prod);
 493         rx_prods.cqe_prod = rte_cpu_to_le_16(cqe_prod);
 494
 495         /* Make sure that the BD and SGE data is updated before updating the
 496          * producers since FW might read the BD/SGE right after the producer
 497          * is updated.
 498          */
 499         rte_wmb();
 500
 501         internal_ram_wr(rxq->hw_rxq_prod_addr, sizeof(rx_prods),
 502                         (uint32_t *)&rx_prods);
 503
 504         /* mmiowb is needed to synchronize doorbell writes from more than one
 505          * processor. It guarantees that the write arrives to the device before
 506          * the napi lock is released and another qede_poll is called (possibly
 507          * on another CPU). Without this barrier, the next doorbell can bypass
 508          * this doorbell. This is applicable to IA64/Altix systems.
 509          */
 510         rte_wmb();
 511
 512         PMD_RX_LOG(DEBUG, rxq, "bd_prod %u  cqe_prod %u\n", bd_prod, cqe_prod);
 513 }
 514
 515 static inline uint32_t
 516 qede_rxfh_indir_default(uint32_t index, uint32_t n_rx_rings)
 517 {
 518         return index % n_rx_rings;
 519 }
 520
 521 static void qede_prandom_bytes(uint32_t *buff, size_t bytes)
 522 {
 523         unsigned int i;
 524
 525         srand((unsigned int)time(NULL));
 526
 527         for (i = 0; i < ECORE_RSS_KEY_SIZE; i++)
 528                 buff[i] = rand();
 529 }
 530
 531 static int
 532 qede_config_rss(struct rte_eth_dev *eth_dev,
 533                 struct qed_update_vport_rss_params *rss_params)
 534 {
 535         enum rte_eth_rx_mq_mode mode = eth_dev->data->dev_conf.rxmode.mq_mode;
 536         struct rte_eth_rss_conf rss_conf =
 537             eth_dev->data->dev_conf.rx_adv_conf.rss_conf;
 538         struct qede_dev *qdev = eth_dev->data->dev_private;
 539         struct ecore_dev *edev = &qdev->edev;
 540         unsigned int i;
 541
 542         PMD_INIT_FUNC_TRACE(edev);
 543
 544         /* Check if RSS conditions are met.
 545          * Note: Even though its meaningless to enable RSS with one queue, it
 546          * could be used to produce RSS Hash, so skipping that check.
 547          */
 548
 549         if (!(mode & ETH_MQ_RX_RSS)) {
 550                 DP_INFO(edev, "RSS flag is not set\n");
 551                 return -EINVAL;
 552         }
 553
 554         DP_INFO(edev, "RSS flag is set\n");
 555
 556         if (rss_conf.rss_hf == 0) {
 557                 DP_NOTICE(edev, false, "No RSS hash function to apply\n");
 558                 return -EINVAL;
 559         }
 560
 561         if (rss_conf.rss_key != NULL) {
 562                 DP_NOTICE(edev, false,
 563                           "User provided RSS key is not supported\n");
 564                 return -EINVAL;
 565         }
 566
 567         memset(rss_params, 0, sizeof(*rss_params));
 568
 569         for (i = 0; i < ECORE_RSS_IND_TABLE_SIZE; i++)
 570                 rss_params->rss_ind_table[i] = qede_rxfh_indir_default(i,
 571                                                         QEDE_RSS_CNT(qdev));
 572
 573         qede_prandom_bytes(rss_params->rss_key,
 574                            sizeof(rss_params->rss_key));
 575
 576         DP_INFO(edev, "RSS check passes\n");
 577
 578         return 0;
 579 }
 580
 581 static int qede_start_queues(struct rte_eth_dev *eth_dev, bool clear_stats)
 582 {
 583         struct qede_dev *qdev = eth_dev->data->dev_private;
 584         struct ecore_dev *edev = &qdev->edev;
 585         struct qed_update_vport_rss_params *rss_params = &qdev->rss_params;
 586         struct qed_dev_info *qed_info = &qdev->dev_info.common;
 587         struct qed_update_vport_params vport_update_params;
 588         struct qed_start_vport_params start = { 0 };
 589         int vlan_removal_en = 1;
 590         int rc, tc, i;
 591
 592         if (!qdev->num_rss) {
 593                 DP_ERR(edev,
 594                        "Cannot update V-VPORT as active as "
 595                        "there are no Rx queues\n");
 596                 return -EINVAL;
 597         }
 598
 599         start.remove_inner_vlan = vlan_removal_en;
 600         start.gro_enable = !qdev->gro_disable;
 601         start.mtu = qdev->mtu;
 602         start.vport_id = 0;
 603         start.drop_ttl0 = true;
 604         start.clear_stats = clear_stats;
 605
 606         rc = qdev->ops->vport_start(edev, &start);
 607         if (rc) {
 608                 DP_ERR(edev, "Start V-PORT failed %d\n", rc);
 609                 return rc;
 610         }
 611
 612         DP_INFO(edev,
 613                 "Start vport ramrod passed, vport_id = %d,"
 614                 " MTU = %d, vlan_removal_en = %d\n",
 615                 start.vport_id, qdev->mtu, vlan_removal_en);
 616
 617         for_each_rss(i) {
 618                 struct qede_fastpath *fp = &qdev->fp_array[i];
 619                 dma_addr_t p_phys_table;
 620                 uint16_t page_cnt;
 621
 622                 p_phys_table = ecore_chain_get_pbl_phys(&fp->rxq->rx_comp_ring);
 623                 page_cnt = ecore_chain_get_page_cnt(&fp->rxq->rx_comp_ring);
 624
 625                 ecore_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);  /* @DPDK */
 626
 627                 rc = qdev->ops->q_rx_start(edev, i, i, 0,
 628                                            fp->sb_info->igu_sb_id,
 629                                            RX_PI,
 630                                            fp->rxq->rx_buf_size,
 631                                            fp->rxq->rx_bd_ring.p_phys_addr,
 632                                            p_phys_table,
 633                                            page_cnt,
 634                                            &fp->rxq->hw_rxq_prod_addr);
 635                 if (rc) {
 636                         DP_ERR(edev, "Start RXQ #%d failed %d\n", i, rc);
 637                         return rc;
 638                 }
 639
 640                 fp->rxq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[RX_PI];
 641
 642                 qede_update_rx_prod(qdev, fp->rxq);
 643
 644                 for (tc = 0; tc < qdev->num_tc; tc++) {
 645                         struct qede_tx_queue *txq = fp->txqs[tc];
 646                         int txq_index = tc * QEDE_RSS_CNT(qdev) + i;
 647
 648                         p_phys_table = ecore_chain_get_pbl_phys(&txq->tx_pbl);
 649                         page_cnt = ecore_chain_get_page_cnt(&txq->tx_pbl);
 650                         rc = qdev->ops->q_tx_start(edev, i, txq_index,
 651                                                    0,
 652                                                    fp->sb_info->igu_sb_id,
 653                                                    TX_PI(tc),
 654                                                    p_phys_table, page_cnt,
 655                                                    &txq->doorbell_addr);
 656                         if (rc) {
 657                                 DP_ERR(edev, "Start txq %u failed %d\n",
 658                                        txq_index, rc);
 659                                 return rc;
 660                         }
 661
 662                         txq->hw_cons_ptr =
 663                             &fp->sb_info->sb_virt->pi_array[TX_PI(tc)];
 664                         SET_FIELD(txq->tx_db.data.params,
 665                                   ETH_DB_DATA_DEST, DB_DEST_XCM);
 666                         SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD,
 667                                   DB_AGG_CMD_SET);
 668                         SET_FIELD(txq->tx_db.data.params,
 669                                   ETH_DB_DATA_AGG_VAL_SEL,
 670                                   DQ_XCM_ETH_TX_BD_PROD_CMD);
 671
 672                         txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
 673                 }
 674         }
 675
 676         /* Prepare and send the vport enable */
 677         memset(&vport_update_params, 0, sizeof(vport_update_params));
 678         vport_update_params.vport_id = start.vport_id;
 679         vport_update_params.update_vport_active_flg = 1;
 680         vport_update_params.vport_active_flg = 1;
 681
 682         /* @DPDK */
 683         if (qed_info->mf_mode == MF_NPAR && qed_info->tx_switching) {
 684                 /* TBD: Check SRIOV enabled for VF */
 685                 vport_update_params.update_tx_switching_flg = 1;
 686                 vport_update_params.tx_switching_flg = 1;
 687         }
 688
 689         if (!qede_config_rss(eth_dev, rss_params)) {
 690                 vport_update_params.update_rss_flg = 1;
 691
 692                 qdev->rss_enabled = 1;
 693                 DP_INFO(edev, "Updating RSS flag\n");
 694         } else {
 695                 qdev->rss_enabled = 0;
 696                 DP_INFO(edev, "Not Updating RSS flag\n");
 697         }
 698
 699         rte_memcpy(&vport_update_params.rss_params, rss_params,
 700                sizeof(*rss_params));
 701
 702         rc = qdev->ops->vport_update(edev, &vport_update_params);
 703         if (rc) {
 704                 DP_ERR(edev, "Update V-PORT failed %d\n", rc);
 705                 return rc;
 706         }
 707
 708         return 0;
 709 }
 710
 711 #ifdef ENC_SUPPORTED
 712 static bool qede_tunn_exist(uint16_t flag)
 713 {
 714         return !!((PARSING_AND_ERR_FLAGS_TUNNELEXIST_MASK <<
 715                     PARSING_AND_ERR_FLAGS_TUNNELEXIST_SHIFT) & flag);
 716 }
 717
 718 static inline uint8_t qede_check_tunn_csum(uint16_t flag)
 719 {
 720         uint8_t tcsum = 0;
 721         uint16_t csum_flag = 0;
 722
 723         if ((PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_MASK <<
 724              PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMWASCALCULATED_SHIFT) & flag)
 725                 csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_MASK <<
 726                     PARSING_AND_ERR_FLAGS_TUNNELL4CHKSMERROR_SHIFT;
 727
 728         if ((PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
 729              PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT) & flag) {
 730                 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
 731                     PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
 732                 tcsum = QEDE_TUNN_CSUM_UNNECESSARY;
 733         }
 734
 735         csum_flag |= PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_MASK <<
 736             PARSING_AND_ERR_FLAGS_TUNNELIPHDRERROR_SHIFT |
 737             PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
 738             PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;
 739
 740         if (csum_flag & flag)
 741                 return QEDE_CSUM_ERROR;
 742
 743         return QEDE_CSUM_UNNECESSARY | tcsum;
 744 }
 745 #else
 746 static inline uint8_t qede_tunn_exist(uint16_t flag)
 747 {
 748         return 0;
 749 }
 750
 751 static inline uint8_t qede_check_tunn_csum(uint16_t flag)
 752 {
 753         return 0;
 754 }
 755 #endif
 756
 757 static inline uint8_t qede_check_notunn_csum(uint16_t flag)
 758 {
 759         uint8_t csum = 0;
 760         uint16_t csum_flag = 0;
 761
 762         if ((PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_MASK <<
 763              PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED_SHIFT) & flag) {
 764                 csum_flag |= PARSING_AND_ERR_FLAGS_L4CHKSMERROR_MASK <<
 765                     PARSING_AND_ERR_FLAGS_L4CHKSMERROR_SHIFT;
 766                 csum = QEDE_CSUM_UNNECESSARY;
 767         }
 768
 769         csum_flag |= PARSING_AND_ERR_FLAGS_IPHDRERROR_MASK <<
 770             PARSING_AND_ERR_FLAGS_IPHDRERROR_SHIFT;
 771
 772         if (csum_flag & flag)
 773                 return QEDE_CSUM_ERROR;
 774
 775         return csum;
 776 }
 777
 778 static inline uint8_t qede_check_csum(uint16_t flag)
 779 {
 780         if (likely(!qede_tunn_exist(flag)))
 781                 return qede_check_notunn_csum(flag);
 782         else
 783                 return qede_check_tunn_csum(flag);
 784 }
 785
 786 static inline void qede_rx_bd_ring_consume(struct qede_rx_queue *rxq)
 787 {
 788         ecore_chain_consume(&rxq->rx_bd_ring);
 789         rxq->sw_rx_cons++;
 790 }
 791
 792 static inline void
 793 qede_reuse_page(struct qede_dev *qdev,
 794                 struct qede_rx_queue *rxq, struct qede_rx_entry *curr_cons)
 795 {
 796         struct eth_rx_bd *rx_bd_prod = ecore_chain_produce(&rxq->rx_bd_ring);
 797         uint16_t idx = rxq->sw_rx_cons & NUM_RX_BDS(rxq);
 798         struct qede_rx_entry *curr_prod;
 799         dma_addr_t new_mapping;
 800
 801         curr_prod = &rxq->sw_rx_ring[idx];
 802         *curr_prod = *curr_cons;
 803
 804         new_mapping = rte_mbuf_data_dma_addr_default(curr_prod->mbuf) +
 805                       curr_prod->page_offset;
 806
 807         rx_bd_prod->addr.hi = rte_cpu_to_le_32(U64_HI(new_mapping));
 808         rx_bd_prod->addr.lo = rte_cpu_to_le_32(U64_LO(new_mapping));
 809
 810         rxq->sw_rx_prod++;
 811 }
 812
 813 static inline void
 814 qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq,
 815                         struct qede_dev *qdev, uint8_t count)
 816 {
 817         struct qede_rx_entry *curr_cons;
 818
 819         for (; count > 0; count--) {
 820                 curr_cons = &rxq->sw_rx_ring[rxq->sw_rx_cons & NUM_RX_BDS(rxq)];
 821                 qede_reuse_page(qdev, rxq, curr_cons);
 822                 qede_rx_bd_ring_consume(rxq);
 823         }
 824 }
 825
 826 static inline uint32_t qede_rx_cqe_to_pkt_type(uint16_t flags)
 827 {
 828         uint32_t p_type;
 829         /* TBD - L4 indications needed ? */
 830         uint16_t protocol = ((PARSING_AND_ERR_FLAGS_L3TYPE_MASK <<
 831                               PARSING_AND_ERR_FLAGS_L3TYPE_SHIFT) & flags);
 832
 833         /* protocol = 3 means LLC/SNAP over Ethernet */
 834         if (unlikely(protocol == 0 || protocol == 3))
 835                 p_type = RTE_PTYPE_UNKNOWN;
 836         else if (protocol == 1)
 837                 p_type = RTE_PTYPE_L3_IPV4;
 838         else if (protocol == 2)
 839                 p_type = RTE_PTYPE_L3_IPV6;
 840
 841         return RTE_PTYPE_L2_ETHER | p_type;
 842 }
 843
 844 uint16_t
 845 qede_recv_pkts(void *p_rxq, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
 846 {
 847         struct qede_rx_queue *rxq = p_rxq;
 848         struct qede_dev *qdev = rxq->qdev;
 849         struct ecore_dev *edev = &qdev->edev;
 850         struct qede_fastpath *fp = &qdev->fp_array[rxq->queue_id];
 851         uint16_t hw_comp_cons, sw_comp_cons, sw_rx_index;
 852         uint16_t rx_pkt = 0;
 853         union eth_rx_cqe *cqe;
 854         struct eth_fast_path_rx_reg_cqe *fp_cqe;
 855         register struct rte_mbuf *rx_mb = NULL;
 856         enum eth_rx_cqe_type cqe_type;
 857         uint16_t len, pad;
 858         uint16_t preload_idx;
 859         uint8_t csum_flag;
 860         uint16_t parse_flag;
 861         enum rss_hash_type htype;
 862
 863         hw_comp_cons = rte_le_to_cpu_16(*rxq->hw_cons_ptr);
 864         sw_comp_cons = ecore_chain_get_cons_idx(&rxq->rx_comp_ring);
 865
 866         rte_rmb();
 867
 868         if (hw_comp_cons == sw_comp_cons)
 869                 return 0;
 870
 871         while (sw_comp_cons != hw_comp_cons) {
 872                 /* Get the CQE from the completion ring */
 873                 cqe =
 874                     (union eth_rx_cqe *)ecore_chain_consume(&rxq->rx_comp_ring);
 875                 cqe_type = cqe->fast_path_regular.type;
 876
 877                 if (unlikely(cqe_type == ETH_RX_CQE_TYPE_SLOW_PATH)) {
 878                         PMD_RX_LOG(DEBUG, rxq, "Got a slowath CQE\n");
 879
 880                         qdev->ops->eth_cqe_completion(edev, fp->rss_id,
 881                                 (struct eth_slow_path_rx_cqe *)cqe);
 882                         goto next_cqe;
 883                 }
 884
 885                 /* Get the data from the SW ring */
 886                 sw_rx_index = rxq->sw_rx_cons & NUM_RX_BDS(rxq);
 887                 rx_mb = rxq->sw_rx_ring[sw_rx_index].mbuf;
 888                 assert(rx_mb != NULL);
 889
 890                 /* non GRO */
 891                 fp_cqe = &cqe->fast_path_regular;
 892
 893                 len = rte_le_to_cpu_16(fp_cqe->len_on_first_bd);
 894                 pad = fp_cqe->placement_offset;
 895                 assert((len + pad) <= rx_mb->buf_len);
 896
 897                 PMD_RX_LOG(DEBUG, rxq,
 898                            "CQE type = 0x%x, flags = 0x%x, vlan = 0x%x"
 899                            " len = %u, parsing_flags = %d\n",
 900                            cqe_type, fp_cqe->bitfields,
 901                            rte_le_to_cpu_16(fp_cqe->vlan_tag),
 902                            len, rte_le_to_cpu_16(fp_cqe->pars_flags.flags));
 903
 904                 /* If this is an error packet then drop it */
 905                 parse_flag =
 906                     rte_le_to_cpu_16(cqe->fast_path_regular.pars_flags.flags);
 907                 csum_flag = qede_check_csum(parse_flag);
 908                 if (unlikely(csum_flag == QEDE_CSUM_ERROR)) {
 909                         PMD_RX_LOG(ERR, rxq,
 910                                    "CQE in CONS = %u has error, flags = 0x%x "
 911                                    "dropping incoming packet\n",
 912                                    sw_comp_cons, parse_flag);
 913                         rxq->rx_hw_errors++;
 914                         qede_recycle_rx_bd_ring(rxq, qdev, fp_cqe->bd_num);
 915                         goto next_cqe;
 916                 }
 917
 918                 if (unlikely(qede_alloc_rx_buffer(rxq) != 0)) {
 919                         PMD_RX_LOG(ERR, rxq,
 920                                    "New buffer allocation failed,"
 921                                    "dropping incoming packet\n");
 922                         qede_recycle_rx_bd_ring(rxq, qdev, fp_cqe->bd_num);
 923                         rte_eth_devices[rxq->port_id].
 924                             data->rx_mbuf_alloc_failed++;
 925                         rxq->rx_alloc_errors++;
 926                         break;
 927                 }
 928
 929                 qede_rx_bd_ring_consume(rxq);
 930
 931                 /* Prefetch next mbuf while processing current one. */
 932                 preload_idx = rxq->sw_rx_cons & NUM_RX_BDS(rxq);
 933                 rte_prefetch0(rxq->sw_rx_ring[preload_idx].mbuf);
 934
 935                 if (fp_cqe->bd_num != 1)
 936                         PMD_RX_LOG(DEBUG, rxq,
 937                                    "Jumbo-over-BD packet not supported\n");
 938
 939                 /* Update MBUF fields */
 940                 rx_mb->ol_flags = 0;
 941                 rx_mb->data_off = pad + RTE_PKTMBUF_HEADROOM;
 942                 rx_mb->nb_segs = 1;
 943                 rx_mb->data_len = len;
 944                 rx_mb->pkt_len = len;
 945                 rx_mb->port = rxq->port_id;
 946                 rx_mb->packet_type = qede_rx_cqe_to_pkt_type(parse_flag);
 947
 948                 htype = (uint8_t)GET_FIELD(fp_cqe->bitfields,
 949                                 ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE);
 950                 if (qdev->rss_enabled && htype) {
 951                         rx_mb->ol_flags |= PKT_RX_RSS_HASH;
 952                         rx_mb->hash.rss = rte_le_to_cpu_32(fp_cqe->rss_hash);
 953                         PMD_RX_LOG(DEBUG, rxq, "Hash result 0x%x\n",
 954                                    rx_mb->hash.rss);
 955                 }
 956
 957                 rte_prefetch1(rte_pktmbuf_mtod(rx_mb, void *));
 958
 959                 if (CQE_HAS_VLAN(parse_flag)) {
 960                         rx_mb->vlan_tci = rte_le_to_cpu_16(fp_cqe->vlan_tag);
 961                         rx_mb->ol_flags |= PKT_RX_VLAN_PKT;
 962                 }
 963
 964                 if (CQE_HAS_OUTER_VLAN(parse_flag)) {
 965                         /* FW does not provide indication of Outer VLAN tag,
 966                          * which is always stripped, so vlan_tci_outer is set
 967                          * to 0. Here vlan_tag represents inner VLAN tag.
 968                          */
 969                         rx_mb->vlan_tci = rte_le_to_cpu_16(fp_cqe->vlan_tag);
 970                         rx_mb->ol_flags |= PKT_RX_QINQ_PKT;
 971                 }
 972
 973                 rx_pkts[rx_pkt] = rx_mb;
 974                 rx_pkt++;
 975 next_cqe:
 976                 ecore_chain_recycle_consumed(&rxq->rx_comp_ring);
 977                 sw_comp_cons = ecore_chain_get_cons_idx(&rxq->rx_comp_ring);
 978                 if (rx_pkt == nb_pkts) {
 979                         PMD_RX_LOG(DEBUG, rxq,
 980                                    "Budget reached nb_pkts=%u received=%u\n",
 981                                    rx_pkt, nb_pkts);
 982                         break;
 983                 }
 984         }
 985
 986         qede_update_rx_prod(qdev, rxq);
 987
 988         PMD_RX_LOG(DEBUG, rxq, "rx_pkts=%u core=%d\n", rx_pkt, rte_lcore_id());
 989
 990         return rx_pkt;
 991 }
 992
 993 static inline int
 994 qede_free_tx_pkt(struct ecore_dev *edev, struct qede_tx_queue *txq)
 995 {
 996         uint16_t idx = TX_CONS(txq);
 997         struct eth_tx_bd *tx_data_bd;
 998         struct rte_mbuf *mbuf = txq->sw_tx_ring[idx].mbuf;
 999
1000         if (unlikely(!mbuf)) {
1001                 PMD_TX_LOG(ERR, txq,
1002                            "null mbuf nb_tx_desc %u nb_tx_avail %u "
1003                            "sw_tx_cons %u sw_tx_prod %u\n",
1004                            txq->nb_tx_desc, txq->nb_tx_avail, idx,
1005                            TX_PROD(txq));
1006                 return -1;
1007         }
1008
1009         /* Free now */
1010         rte_pktmbuf_free_seg(mbuf);
1011         txq->sw_tx_ring[idx].mbuf = NULL;
1012         ecore_chain_consume(&txq->tx_pbl);
1013         txq->nb_tx_avail++;
1014
1015         return 0;
1016 }
1017
1018 static inline uint16_t
1019 qede_process_tx_compl(struct ecore_dev *edev, struct qede_tx_queue *txq)
1020 {
1021         uint16_t tx_compl = 0;
1022         uint16_t hw_bd_cons;
1023         int rc;
1024
1025         hw_bd_cons = rte_le_to_cpu_16(*txq->hw_cons_ptr);
1026         rte_compiler_barrier();
1027
1028         while (hw_bd_cons != ecore_chain_get_cons_idx(&txq->tx_pbl)) {
1029                 rc = qede_free_tx_pkt(edev, txq);
1030                 if (rc) {
1031                         DP_NOTICE(edev, false,
1032                                   "hw_bd_cons = %d, chain_cons=%d\n",
1033                                   hw_bd_cons,
1034                                   ecore_chain_get_cons_idx(&txq->tx_pbl));
1035                         break;
1036                 }
1037                 txq->sw_tx_cons++;      /* Making TXD available */
1038                 tx_compl++;
1039         }
1040
1041         PMD_TX_LOG(DEBUG, txq, "Tx compl %u sw_tx_cons %u avail %u\n",
1042                    tx_compl, txq->sw_tx_cons, txq->nb_tx_avail);
1043         return tx_compl;
1044 }
1045
1046 uint16_t
1047 qede_xmit_pkts(void *p_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
1048 {
1049         struct qede_tx_queue *txq = p_txq;
1050         struct qede_dev *qdev = txq->qdev;
1051         struct ecore_dev *edev = &qdev->edev;
1052         struct qede_fastpath *fp = &qdev->fp_array[txq->queue_id];
1053         struct eth_tx_1st_bd *first_bd;
1054         uint16_t nb_tx_pkts;
1055         uint16_t nb_pkt_sent = 0;
1056         uint16_t bd_prod;
1057         uint16_t idx;
1058         uint16_t tx_count;
1059
1060         if (unlikely(txq->nb_tx_avail < txq->tx_free_thresh)) {
1061                 PMD_TX_LOG(DEBUG, txq, "send=%u avail=%u free_thresh=%u\n",
1062                            nb_pkts, txq->nb_tx_avail, txq->tx_free_thresh);
1063                 (void)qede_process_tx_compl(edev, txq);
1064         }
1065
1066         nb_tx_pkts = RTE_MIN(nb_pkts, (txq->nb_tx_avail / MAX_NUM_TX_BDS));
1067         if (unlikely(nb_tx_pkts == 0)) {
1068                 PMD_TX_LOG(DEBUG, txq, "Out of BDs nb_pkts=%u avail=%u\n",
1069                            nb_pkts, txq->nb_tx_avail);
1070                 return 0;
1071         }
1072
1073         tx_count = nb_tx_pkts;
1074         while (nb_tx_pkts--) {
1075                 /* Fill the entry in the SW ring and the BDs in the FW ring */
1076                 idx = TX_PROD(txq);
1077                 struct rte_mbuf *mbuf = *tx_pkts++;
1078                 txq->sw_tx_ring[idx].mbuf = mbuf;
1079                 first_bd = (struct eth_tx_1st_bd *)
1080                     ecore_chain_produce(&txq->tx_pbl);
1081                 first_bd->data.bd_flags.bitfields =
1082                     1 << ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT;
1083                 /* Map MBUF linear data for DMA and set in the first BD */
1084                 QEDE_BD_SET_ADDR_LEN(first_bd, rte_mbuf_data_dma_addr(mbuf),
1085                                      mbuf->data_len);
1086
1087                 /* Descriptor based VLAN insertion */
1088                 if (mbuf->ol_flags & (PKT_TX_VLAN_PKT | PKT_TX_QINQ_PKT)) {
1089                         first_bd->data.vlan = rte_cpu_to_le_16(mbuf->vlan_tci);
1090                         first_bd->data.bd_flags.bitfields |=
1091                             1 << ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_SHIFT;
1092                 }
1093
1094                 /* Offload the IP checksum in the hardware */
1095                 if (mbuf->ol_flags & PKT_TX_IP_CKSUM) {
1096                         first_bd->data.bd_flags.bitfields |=
1097                             1 << ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT;
1098                 }
1099
1100                 /* L4 checksum offload (tcp or udp) */
1101                 if (mbuf->ol_flags & (PKT_TX_TCP_CKSUM | PKT_TX_UDP_CKSUM)) {
1102                         first_bd->data.bd_flags.bitfields |=
1103                             1 << ETH_TX_1ST_BD_FLAGS_L4_CSUM_SHIFT;
1104                         /* IPv6 + extn. -> later */
1105                 }
1106                 first_bd->data.nbds = MAX_NUM_TX_BDS;
1107                 txq->sw_tx_prod++;
1108                 rte_prefetch0(txq->sw_tx_ring[TX_PROD(txq)].mbuf);
1109                 txq->nb_tx_avail--;
1110                 bd_prod =
1111                     rte_cpu_to_le_16(ecore_chain_get_prod_idx(&txq->tx_pbl));
1112                 nb_pkt_sent++;
1113         }
1114
1115         /* Write value of prod idx into bd_prod */
1116         txq->tx_db.data.bd_prod = bd_prod;
1117         rte_wmb();
1118         rte_compiler_barrier();
1119         DIRECT_REG_WR(edev, txq->doorbell_addr, txq->tx_db.raw);
1120         rte_wmb();
1121
1122         /* Check again for Tx completions */
1123         (void)qede_process_tx_compl(edev, txq);
1124
1125         PMD_TX_LOG(DEBUG, txq, "to_send=%u can_send=%u sent=%u core=%d\n",
1126                    nb_pkts, tx_count, nb_pkt_sent, rte_lcore_id());
1127
1128         return nb_pkt_sent;
1129 }
1130
1131 int qede_dev_start(struct rte_eth_dev *eth_dev)
1132 {
1133         struct qede_dev *qdev = eth_dev->data->dev_private;
1134         struct ecore_dev *edev = &qdev->edev;
1135         struct qed_link_output link_output;
1136         int rc;
1137
1138         DP_INFO(edev, "port %u\n", eth_dev->data->port_id);
1139
1140         if (qdev->state == QEDE_START) {
1141                 DP_INFO(edev, "device already started\n");
1142                 return 0;
1143         }
1144
1145         if (qdev->state == QEDE_CLOSE) {
1146                 rc = qede_alloc_fp_array(qdev);
1147                 qede_init_fp(qdev);
1148                 rc = qede_alloc_mem_load(qdev);
1149                 DP_INFO(edev, "Allocated %d RSS queues on %d TC/s\n",
1150                         QEDE_RSS_CNT(qdev), qdev->num_tc);
1151         } else if (qdev->state == QEDE_STOP) {
1152                 DP_INFO(edev, "restarting port %u\n", eth_dev->data->port_id);
1153         } else {
1154                 DP_INFO(edev, "unknown state port %u\n",
1155                         eth_dev->data->port_id);
1156                 return -EINVAL;
1157         }
1158
1159         rc = qede_start_queues(eth_dev, true);
1160
1161         if (rc) {
1162                 DP_ERR(edev, "Failed to start queues\n");
1163                 /* TBD: free */
1164                 return rc;
1165         }
1166
1167         DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
1168
1169         qede_dev_set_link_state(eth_dev, true);
1170
1171         /* Query whether link is already-up */
1172         memset(&link_output, 0, sizeof(link_output));
1173         qdev->ops->common->get_link(edev, &link_output);
1174         DP_NOTICE(edev, false, "link status: %s\n",
1175                   link_output.link_up ? "up" : "down");
1176
1177         qdev->state = QEDE_START;
1178
1179         qede_config_rx_mode(eth_dev);
1180
1181         DP_INFO(edev, "dev_state is QEDE_START\n");
1182
1183         return 0;
1184 }
1185
1186 static int qede_drain_txq(struct qede_dev *qdev,
1187                           struct qede_tx_queue *txq, bool allow_drain)
1188 {
1189         struct ecore_dev *edev = &qdev->edev;
1190         int rc, cnt = 1000;
1191
1192         while (txq->sw_tx_cons != txq->sw_tx_prod) {
1193                 qede_process_tx_compl(edev, txq);
1194                 if (!cnt) {
1195                         if (allow_drain) {
1196                                 DP_NOTICE(edev, false,
1197                                           "Tx queue[%u] is stuck,"
1198                                           "requesting MCP to drain\n",
1199                                           txq->queue_id);
1200                                 rc = qdev->ops->common->drain(edev);
1201                                 if (rc)
1202                                         return rc;
1203                                 return qede_drain_txq(qdev, txq, false);
1204                         }
1205
1206                         DP_NOTICE(edev, false,
1207                                   "Timeout waiting for tx queue[%d]:"
1208                                   "PROD=%d, CONS=%d\n",
1209                                   txq->queue_id, txq->sw_tx_prod,
1210                                   txq->sw_tx_cons);
1211                         return -ENODEV;
1212                 }
1213                 cnt--;
1214                 DELAY(1000);
1215                 rte_compiler_barrier();
1216         }
1217
1218         /* FW finished processing, wait for HW to transmit all tx packets */
1219         DELAY(2000);
1220
1221         return 0;
1222 }
1223
1224 static int qede_stop_queues(struct qede_dev *qdev)
1225 {
1226         struct qed_update_vport_params vport_update_params;
1227         struct ecore_dev *edev = &qdev->edev;
1228         int rc, tc, i;
1229
1230         /* Disable the vport */
1231         memset(&vport_update_params, 0, sizeof(vport_update_params));
1232         vport_update_params.vport_id = 0;
1233         vport_update_params.update_vport_active_flg = 1;
1234         vport_update_params.vport_active_flg = 0;
1235         vport_update_params.update_rss_flg = 0;
1236
1237         DP_INFO(edev, "vport_update\n");
1238
1239         rc = qdev->ops->vport_update(edev, &vport_update_params);
1240         if (rc) {
1241                 DP_ERR(edev, "Failed to update vport\n");
1242                 return rc;
1243         }
1244
1245         DP_INFO(edev, "Flushing tx queues\n");
1246
1247         /* Flush Tx queues. If needed, request drain from MCP */
1248         for_each_rss(i) {
1249                 struct qede_fastpath *fp = &qdev->fp_array[i];
1250                 for (tc = 0; tc < qdev->num_tc; tc++) {
1251                         struct qede_tx_queue *txq = fp->txqs[tc];
1252                         rc = qede_drain_txq(qdev, txq, true);
1253                         if (rc)
1254                                 return rc;
1255                 }
1256         }
1257
1258         /* Stop all Queues in reverse order */
1259         for (i = QEDE_RSS_CNT(qdev) - 1; i >= 0; i--) {
1260                 struct qed_stop_rxq_params rx_params;
1261
1262                 /* Stop the Tx Queue(s) */
1263                 for (tc = 0; tc < qdev->num_tc; tc++) {
1264                         struct qed_stop_txq_params tx_params;
1265
1266                         tx_params.rss_id = i;
1267                         tx_params.tx_queue_id = tc * QEDE_RSS_CNT(qdev) + i;
1268
1269                         DP_INFO(edev, "Stopping tx queues\n");
1270                         rc = qdev->ops->q_tx_stop(edev, &tx_params);
1271                         if (rc) {
1272                                 DP_ERR(edev, "Failed to stop TXQ #%d\n",
1273                                        tx_params.tx_queue_id);
1274                                 return rc;
1275                         }
1276                 }
1277
1278                 /* Stop the Rx Queue */
1279                 memset(&rx_params, 0, sizeof(rx_params));
1280                 rx_params.rss_id = i;
1281                 rx_params.rx_queue_id = i;
1282                 rx_params.eq_completion_only = 1;
1283
1284                 DP_INFO(edev, "Stopping rx queues\n");
1285
1286                 rc = qdev->ops->q_rx_stop(edev, &rx_params);
1287                 if (rc) {
1288                         DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
1289                         return rc;
1290                 }
1291         }
1292
1293         DP_INFO(edev, "Stopping vports\n");
1294
1295         /* Stop the vport */
1296         rc = qdev->ops->vport_stop(edev, 0);
1297         if (rc)
1298                 DP_ERR(edev, "Failed to stop VPORT\n");
1299
1300         return rc;
1301 }
1302
1303 void qede_reset_fp_rings(struct qede_dev *qdev)
1304 {
1305         uint16_t rss_id;
1306         uint8_t tc;
1307
1308         for_each_rss(rss_id) {
1309                 DP_INFO(&qdev->edev, "reset fp chain for rss %u\n", rss_id);
1310                 struct qede_fastpath *fp = &qdev->fp_array[rss_id];
1311                 ecore_chain_reset(&fp->rxq->rx_bd_ring);
1312                 ecore_chain_reset(&fp->rxq->rx_comp_ring);
1313                 for (tc = 0; tc < qdev->num_tc; tc++) {
1314                         struct qede_tx_queue *txq = fp->txqs[tc];
1315                         ecore_chain_reset(&txq->tx_pbl);
1316                 }
1317         }
1318 }
1319
1320 /* This function frees all memory of a single fp */
1321 static void qede_free_mem_fp(struct qede_dev *qdev, struct qede_fastpath *fp)
1322 {
1323         uint8_t tc;
1324
1325         qede_rx_queue_release(fp->rxq);
1326         for (tc = 0; tc < qdev->num_tc; tc++)
1327                 qede_tx_queue_release(fp->txqs[tc]);
1328 }
1329
1330 void qede_free_mem_load(struct qede_dev *qdev)
1331 {
1332         uint8_t rss_id;
1333
1334         for_each_rss(rss_id) {
1335                 struct qede_fastpath *fp = &qdev->fp_array[rss_id];
1336                 qede_free_mem_fp(qdev, fp);
1337         }
1338         /* qdev->num_rss = 0; */
1339 }
1340
1341 /*
1342  * Stop an Ethernet device. The device can be restarted with a call to
1343  * rte_eth_dev_start().
1344  * Do not change link state and do not release sw structures.
1345  */
1346 void qede_dev_stop(struct rte_eth_dev *eth_dev)
1347 {
1348         struct qede_dev *qdev = eth_dev->data->dev_private;
1349         struct ecore_dev *edev = &qdev->edev;
1350         int rc;
1351
1352         DP_INFO(edev, "port %u\n", eth_dev->data->port_id);
1353
1354         if (qdev->state != QEDE_START) {
1355                 DP_INFO(edev, "device not yet started\n");
1356                 return;
1357         }
1358
1359         rc = qede_stop_queues(qdev);
1360
1361         if (rc)
1362                 DP_ERR(edev, "Didn't succeed to close queues\n");
1363
1364         DP_INFO(edev, "Stopped queues\n");
1365
1366         qdev->ops->fastpath_stop(edev);
1367
1368         qede_reset_fp_rings(qdev);
1369
1370         qdev->state = QEDE_STOP;
1371
1372         DP_INFO(edev, "dev_state is QEDE_STOP\n");
1373 }