drivers/net/ice/ice_dcf_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2020 Intel Corporation
   3  */
   4
   5 #include <errno.h>
   6 #include <stdbool.h>
   7 #include <sys/queue.h>
   8 #include <sys/types.h>
   9 #include <unistd.h>
  10
  11 #include <rte_interrupts.h>
  12 #include <rte_debug.h>
  13 #include <rte_pci.h>
  14 #include <rte_atomic.h>
  15 #include <rte_eal.h>
  16 #include <rte_ether.h>
  17 #include <ethdev_pci.h>
  18 #include <rte_kvargs.h>
  19 #include <rte_malloc.h>
  20 #include <rte_memzone.h>
  21 #include <rte_dev.h>
  22
  23 #include <iavf_devids.h>
  24
  25 #include "ice_generic_flow.h"
  26 #include "ice_dcf_ethdev.h"
  27 #include "ice_rxtx.h"
  28
  29 static int
  30 ice_dcf_dev_udp_tunnel_port_add(struct rte_eth_dev *dev,
  31                                 struct rte_eth_udp_tunnel *udp_tunnel);
  32 static int
  33 ice_dcf_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
  34                                 struct rte_eth_udp_tunnel *udp_tunnel);
  35
  36 static int
  37 ice_dcf_dev_init(struct rte_eth_dev *eth_dev);
  38
  39 static int
  40 ice_dcf_dev_uninit(struct rte_eth_dev *eth_dev);
  41
  42 static uint16_t
  43 ice_dcf_recv_pkts(__rte_unused void *rx_queue,
  44                   __rte_unused struct rte_mbuf **bufs,
  45                   __rte_unused uint16_t nb_pkts)
  46 {
  47         return 0;
  48 }
  49
  50 static uint16_t
  51 ice_dcf_xmit_pkts(__rte_unused void *tx_queue,
  52                   __rte_unused struct rte_mbuf **bufs,
  53                   __rte_unused uint16_t nb_pkts)
  54 {
  55         return 0;
  56 }
  57
  58 static int
  59 ice_dcf_init_rxq(struct rte_eth_dev *dev, struct ice_rx_queue *rxq)
  60 {
  61         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
  62         struct rte_eth_dev_data *dev_data = dev->data;
  63         struct iavf_hw *hw = &dcf_ad->real_hw.avf;
  64         uint16_t buf_size, max_pkt_len;
  65
  66         buf_size = rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM;
  67         rxq->rx_hdr_len = 0;
  68         rxq->rx_buf_len = RTE_ALIGN(buf_size, (1 << ICE_RLAN_CTX_DBUF_S));
  69         max_pkt_len = RTE_MIN(ICE_SUPPORT_CHAIN_NUM * rxq->rx_buf_len,
  70                               dev->data->mtu + ICE_ETH_OVERHEAD);
  71
  72         /* Check maximum packet length is set correctly.  */
  73         if (max_pkt_len <= RTE_ETHER_MIN_LEN ||
  74             max_pkt_len > ICE_FRAME_SIZE_MAX) {
  75                 PMD_DRV_LOG(ERR, "maximum packet length must be "
  76                             "larger than %u and smaller than %u",
  77                             (uint32_t)RTE_ETHER_MIN_LEN,
  78                             (uint32_t)ICE_FRAME_SIZE_MAX);
  79                 return -EINVAL;
  80         }
  81
  82         rxq->max_pkt_len = max_pkt_len;
  83         if ((dev_data->dev_conf.rxmode.offloads & RTE_ETH_RX_OFFLOAD_SCATTER) ||
  84             (rxq->max_pkt_len + 2 * ICE_VLAN_TAG_SIZE) > buf_size) {
  85                 dev_data->scattered_rx = 1;
  86         }
  87         rxq->qrx_tail = hw->hw_addr + IAVF_QRX_TAIL1(rxq->queue_id);
  88         IAVF_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
  89         IAVF_WRITE_FLUSH(hw);
  90
  91         return 0;
  92 }
  93
  94 static int
  95 ice_dcf_init_rx_queues(struct rte_eth_dev *dev)
  96 {
  97         struct ice_rx_queue **rxq =
  98                 (struct ice_rx_queue **)dev->data->rx_queues;
  99         int i, ret;
 100
 101         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 102                 if (!rxq[i] || !rxq[i]->q_set)
 103                         continue;
 104                 ret = ice_dcf_init_rxq(dev, rxq[i]);
 105                 if (ret)
 106                         return ret;
 107         }
 108
 109         ice_set_rx_function(dev);
 110         ice_set_tx_function(dev);
 111
 112         return 0;
 113 }
 114
 115 #define IAVF_MISC_VEC_ID                RTE_INTR_VEC_ZERO_OFFSET
 116 #define IAVF_RX_VEC_START               RTE_INTR_VEC_RXTX_OFFSET
 117
 118 #define IAVF_ITR_INDEX_DEFAULT          0
 119 #define IAVF_QUEUE_ITR_INTERVAL_DEFAULT 32 /* 32 us */
 120 #define IAVF_QUEUE_ITR_INTERVAL_MAX     8160 /* 8160 us */
 121
 122 static inline uint16_t
 123 iavf_calc_itr_interval(int16_t interval)
 124 {
 125         if (interval < 0 || interval > IAVF_QUEUE_ITR_INTERVAL_MAX)
 126                 interval = IAVF_QUEUE_ITR_INTERVAL_DEFAULT;
 127
 128         /* Convert to hardware count, as writing each 1 represents 2 us */
 129         return interval / 2;
 130 }
 131
 132 static int
 133 ice_dcf_config_rx_queues_irqs(struct rte_eth_dev *dev,
 134                                      struct rte_intr_handle *intr_handle)
 135 {
 136         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 137         struct ice_dcf_hw *hw = &adapter->real_hw;
 138         uint16_t interval, i;
 139         int vec;
 140
 141         if (rte_intr_cap_multiple(intr_handle) &&
 142             dev->data->dev_conf.intr_conf.rxq) {
 143                 if (rte_intr_efd_enable(intr_handle, dev->data->nb_rx_queues))
 144                         return -1;
 145         }
 146
 147         if (rte_intr_dp_is_en(intr_handle)) {
 148                 if (rte_intr_vec_list_alloc(intr_handle, "intr_vec",
 149                                                    dev->data->nb_rx_queues)) {
 150                         PMD_DRV_LOG(ERR, "Failed to allocate %d rx intr_vec",
 151                                     dev->data->nb_rx_queues);
 152                         return -1;
 153                 }
 154         }
 155
 156         if (!dev->data->dev_conf.intr_conf.rxq ||
 157             !rte_intr_dp_is_en(intr_handle)) {
 158                 /* Rx interrupt disabled, Map interrupt only for writeback */
 159                 hw->nb_msix = 1;
 160                 if (hw->vf_res->vf_cap_flags &
 161                     VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) {
 162                         /* If WB_ON_ITR supports, enable it */
 163                         hw->msix_base = IAVF_RX_VEC_START;
 164                         /* Set the ITR for index zero, to 2us to make sure that
 165                          * we leave time for aggregation to occur, but don't
 166                          * increase latency dramatically.
 167                          */
 168                         IAVF_WRITE_REG(&hw->avf,
 169                                        IAVF_VFINT_DYN_CTLN1(hw->msix_base - 1),
 170                                        (0 << IAVF_VFINT_DYN_CTLN1_ITR_INDX_SHIFT) |
 171                                        IAVF_VFINT_DYN_CTLN1_WB_ON_ITR_MASK |
 172                                        (2UL << IAVF_VFINT_DYN_CTLN1_INTERVAL_SHIFT));
 173                 } else {
 174                         /* If no WB_ON_ITR offload flags, need to set
 175                          * interrupt for descriptor write back.
 176                          */
 177                         hw->msix_base = IAVF_MISC_VEC_ID;
 178
 179                         /* set ITR to max */
 180                         interval =
 181                         iavf_calc_itr_interval(IAVF_QUEUE_ITR_INTERVAL_MAX);
 182                         IAVF_WRITE_REG(&hw->avf, IAVF_VFINT_DYN_CTL01,
 183                                        IAVF_VFINT_DYN_CTL01_INTENA_MASK |
 184                                        (IAVF_ITR_INDEX_DEFAULT <<
 185                                         IAVF_VFINT_DYN_CTL01_ITR_INDX_SHIFT) |
 186                                        (interval <<
 187                                         IAVF_VFINT_DYN_CTL01_INTERVAL_SHIFT));
 188                 }
 189                 IAVF_WRITE_FLUSH(&hw->avf);
 190                 /* map all queues to the same interrupt */
 191                 for (i = 0; i < dev->data->nb_rx_queues; i++)
 192                         hw->rxq_map[hw->msix_base] |= 1 << i;
 193         } else {
 194                 if (!rte_intr_allow_others(intr_handle)) {
 195                         hw->nb_msix = 1;
 196                         hw->msix_base = IAVF_MISC_VEC_ID;
 197                         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 198                                 hw->rxq_map[hw->msix_base] |= 1 << i;
 199                                 rte_intr_vec_list_index_set(intr_handle,
 200                                                         i, IAVF_MISC_VEC_ID);
 201                         }
 202                         PMD_DRV_LOG(DEBUG,
 203                                     "vector %u are mapping to all Rx queues",
 204                                     hw->msix_base);
 205                 } else {
 206                         /* If Rx interrupt is reuquired, and we can use
 207                          * multi interrupts, then the vec is from 1
 208                          */
 209                         hw->nb_msix = RTE_MIN(hw->vf_res->max_vectors,
 210                                       rte_intr_nb_efd_get(intr_handle));
 211                         hw->msix_base = IAVF_MISC_VEC_ID;
 212                         vec = IAVF_MISC_VEC_ID;
 213                         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 214                                 hw->rxq_map[vec] |= 1 << i;
 215                                 rte_intr_vec_list_index_set(intr_handle,
 216                                                                    i, vec++);
 217                                 if (vec >= hw->nb_msix)
 218                                         vec = IAVF_RX_VEC_START;
 219                         }
 220                         PMD_DRV_LOG(DEBUG,
 221                                     "%u vectors are mapping to %u Rx queues",
 222                                     hw->nb_msix, dev->data->nb_rx_queues);
 223                 }
 224         }
 225
 226         if (ice_dcf_config_irq_map(hw)) {
 227                 PMD_DRV_LOG(ERR, "config interrupt mapping failed");
 228                 return -1;
 229         }
 230         return 0;
 231 }
 232
 233 static int
 234 alloc_rxq_mbufs(struct ice_rx_queue *rxq)
 235 {
 236         volatile union ice_rx_flex_desc *rxd;
 237         struct rte_mbuf *mbuf = NULL;
 238         uint64_t dma_addr;
 239         uint16_t i;
 240
 241         for (i = 0; i < rxq->nb_rx_desc; i++) {
 242                 mbuf = rte_mbuf_raw_alloc(rxq->mp);
 243                 if (unlikely(!mbuf)) {
 244                         PMD_DRV_LOG(ERR, "Failed to allocate mbuf for RX");
 245                         return -ENOMEM;
 246                 }
 247
 248                 rte_mbuf_refcnt_set(mbuf, 1);
 249                 mbuf->next = NULL;
 250                 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 251                 mbuf->nb_segs = 1;
 252                 mbuf->port = rxq->port_id;
 253
 254                 dma_addr =
 255                         rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
 256
 257                 rxd = &rxq->rx_ring[i];
 258                 rxd->read.pkt_addr = dma_addr;
 259                 rxd->read.hdr_addr = 0;
 260 #ifndef RTE_LIBRTE_ICE_16BYTE_RX_DESC
 261                 rxd->read.rsvd1 = 0;
 262                 rxd->read.rsvd2 = 0;
 263 #endif
 264
 265                 rxq->sw_ring[i].mbuf = (void *)mbuf;
 266         }
 267
 268         return 0;
 269 }
 270
 271 static int
 272 ice_dcf_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 273 {
 274         struct ice_dcf_adapter *ad = dev->data->dev_private;
 275         struct iavf_hw *hw = &ad->real_hw.avf;
 276         struct ice_rx_queue *rxq;
 277         int err = 0;
 278
 279         if (rx_queue_id >= dev->data->nb_rx_queues)
 280                 return -EINVAL;
 281
 282         rxq = dev->data->rx_queues[rx_queue_id];
 283
 284         err = alloc_rxq_mbufs(rxq);
 285         if (err) {
 286                 PMD_DRV_LOG(ERR, "Failed to allocate RX queue mbuf");
 287                 return err;
 288         }
 289
 290         rte_wmb();
 291
 292         /* Init the RX tail register. */
 293         IAVF_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
 294         IAVF_WRITE_FLUSH(hw);
 295
 296         /* Ready to switch the queue on */
 297         err = ice_dcf_switch_queue(&ad->real_hw, rx_queue_id, true, true);
 298         if (err) {
 299                 PMD_DRV_LOG(ERR, "Failed to switch RX queue %u on",
 300                             rx_queue_id);
 301                 return err;
 302         }
 303
 304         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 305
 306         return 0;
 307 }
 308
 309 static inline void
 310 reset_rx_queue(struct ice_rx_queue *rxq)
 311 {
 312         uint16_t len;
 313         uint32_t i;
 314
 315         if (!rxq)
 316                 return;
 317
 318         len = rxq->nb_rx_desc + ICE_RX_MAX_BURST;
 319
 320         for (i = 0; i < len * sizeof(union ice_rx_flex_desc); i++)
 321                 ((volatile char *)rxq->rx_ring)[i] = 0;
 322
 323         memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
 324
 325         for (i = 0; i < ICE_RX_MAX_BURST; i++)
 326                 rxq->sw_ring[rxq->nb_rx_desc + i].mbuf = &rxq->fake_mbuf;
 327
 328         /* for rx bulk */
 329         rxq->rx_nb_avail = 0;
 330         rxq->rx_next_avail = 0;
 331         rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
 332
 333         rxq->rx_tail = 0;
 334         rxq->nb_rx_hold = 0;
 335         rxq->pkt_first_seg = NULL;
 336         rxq->pkt_last_seg = NULL;
 337 }
 338
 339 static inline void
 340 reset_tx_queue(struct ice_tx_queue *txq)
 341 {
 342         struct ice_tx_entry *txe;
 343         uint32_t i, size;
 344         uint16_t prev;
 345
 346         if (!txq) {
 347                 PMD_DRV_LOG(DEBUG, "Pointer to txq is NULL");
 348                 return;
 349         }
 350
 351         txe = txq->sw_ring;
 352         size = sizeof(struct ice_tx_desc) * txq->nb_tx_desc;
 353         for (i = 0; i < size; i++)
 354                 ((volatile char *)txq->tx_ring)[i] = 0;
 355
 356         prev = (uint16_t)(txq->nb_tx_desc - 1);
 357         for (i = 0; i < txq->nb_tx_desc; i++) {
 358                 txq->tx_ring[i].cmd_type_offset_bsz =
 359                         rte_cpu_to_le_64(IAVF_TX_DESC_DTYPE_DESC_DONE);
 360                 txe[i].mbuf =  NULL;
 361                 txe[i].last_id = i;
 362                 txe[prev].next_id = i;
 363                 prev = i;
 364         }
 365
 366         txq->tx_tail = 0;
 367         txq->nb_tx_used = 0;
 368
 369         txq->last_desc_cleaned = txq->nb_tx_desc - 1;
 370         txq->nb_tx_free = txq->nb_tx_desc - 1;
 371
 372         txq->tx_next_dd = txq->tx_rs_thresh - 1;
 373         txq->tx_next_rs = txq->tx_rs_thresh - 1;
 374 }
 375
 376 static int
 377 ice_dcf_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 378 {
 379         struct ice_dcf_adapter *ad = dev->data->dev_private;
 380         struct ice_dcf_hw *hw = &ad->real_hw;
 381         struct ice_rx_queue *rxq;
 382         int err;
 383
 384         if (rx_queue_id >= dev->data->nb_rx_queues)
 385                 return -EINVAL;
 386
 387         err = ice_dcf_switch_queue(hw, rx_queue_id, true, false);
 388         if (err) {
 389                 PMD_DRV_LOG(ERR, "Failed to switch RX queue %u off",
 390                             rx_queue_id);
 391                 return err;
 392         }
 393
 394         rxq = dev->data->rx_queues[rx_queue_id];
 395         rxq->rx_rel_mbufs(rxq);
 396         reset_rx_queue(rxq);
 397         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 398
 399         return 0;
 400 }
 401
 402 static int
 403 ice_dcf_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 404 {
 405         struct ice_dcf_adapter *ad = dev->data->dev_private;
 406         struct iavf_hw *hw = &ad->real_hw.avf;
 407         struct ice_tx_queue *txq;
 408         int err = 0;
 409
 410         if (tx_queue_id >= dev->data->nb_tx_queues)
 411                 return -EINVAL;
 412
 413         txq = dev->data->tx_queues[tx_queue_id];
 414
 415         /* Init the RX tail register. */
 416         txq->qtx_tail = hw->hw_addr + IAVF_QTX_TAIL1(tx_queue_id);
 417         IAVF_PCI_REG_WRITE(txq->qtx_tail, 0);
 418         IAVF_WRITE_FLUSH(hw);
 419
 420         /* Ready to switch the queue on */
 421         err = ice_dcf_switch_queue(&ad->real_hw, tx_queue_id, false, true);
 422
 423         if (err) {
 424                 PMD_DRV_LOG(ERR, "Failed to switch TX queue %u on",
 425                             tx_queue_id);
 426                 return err;
 427         }
 428
 429         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 430
 431         return 0;
 432 }
 433
 434 static int
 435 ice_dcf_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 436 {
 437         struct ice_dcf_adapter *ad = dev->data->dev_private;
 438         struct ice_dcf_hw *hw = &ad->real_hw;
 439         struct ice_tx_queue *txq;
 440         int err;
 441
 442         if (tx_queue_id >= dev->data->nb_tx_queues)
 443                 return -EINVAL;
 444
 445         err = ice_dcf_switch_queue(hw, tx_queue_id, false, false);
 446         if (err) {
 447                 PMD_DRV_LOG(ERR, "Failed to switch TX queue %u off",
 448                             tx_queue_id);
 449                 return err;
 450         }
 451
 452         txq = dev->data->tx_queues[tx_queue_id];
 453         txq->tx_rel_mbufs(txq);
 454         reset_tx_queue(txq);
 455         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 456
 457         return 0;
 458 }
 459
 460 static int
 461 ice_dcf_start_queues(struct rte_eth_dev *dev)
 462 {
 463         struct ice_rx_queue *rxq;
 464         struct ice_tx_queue *txq;
 465         int nb_rxq = 0;
 466         int nb_txq, i;
 467
 468         for (nb_txq = 0; nb_txq < dev->data->nb_tx_queues; nb_txq++) {
 469                 txq = dev->data->tx_queues[nb_txq];
 470                 if (txq->tx_deferred_start)
 471                         continue;
 472                 if (ice_dcf_tx_queue_start(dev, nb_txq) != 0) {
 473                         PMD_DRV_LOG(ERR, "Fail to start queue %u", nb_txq);
 474                         goto tx_err;
 475                 }
 476         }
 477
 478         for (nb_rxq = 0; nb_rxq < dev->data->nb_rx_queues; nb_rxq++) {
 479                 rxq = dev->data->rx_queues[nb_rxq];
 480                 if (rxq->rx_deferred_start)
 481                         continue;
 482                 if (ice_dcf_rx_queue_start(dev, nb_rxq) != 0) {
 483                         PMD_DRV_LOG(ERR, "Fail to start queue %u", nb_rxq);
 484                         goto rx_err;
 485                 }
 486         }
 487
 488         return 0;
 489
 490         /* stop the started queues if failed to start all queues */
 491 rx_err:
 492         for (i = 0; i < nb_rxq; i++)
 493                 ice_dcf_rx_queue_stop(dev, i);
 494 tx_err:
 495         for (i = 0; i < nb_txq; i++)
 496                 ice_dcf_tx_queue_stop(dev, i);
 497
 498         return -1;
 499 }
 500
 501 static int
 502 ice_dcf_dev_start(struct rte_eth_dev *dev)
 503 {
 504         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
 505         struct rte_intr_handle *intr_handle = dev->intr_handle;
 506         struct ice_adapter *ad = &dcf_ad->parent;
 507         struct ice_dcf_hw *hw = &dcf_ad->real_hw;
 508         int ret;
 509
 510         if (hw->resetting) {
 511                 PMD_DRV_LOG(ERR,
 512                             "The DCF has been reset by PF, please reinit first");
 513                 return -EIO;
 514         }
 515
 516         if (hw->tm_conf.root && !hw->tm_conf.committed) {
 517                 PMD_DRV_LOG(ERR,
 518                         "please call hierarchy_commit() before starting the port");
 519                 return -EIO;
 520         }
 521
 522         ad->pf.adapter_stopped = 0;
 523
 524         hw->num_queue_pairs = RTE_MAX(dev->data->nb_rx_queues,
 525                                       dev->data->nb_tx_queues);
 526
 527         ret = ice_dcf_init_rx_queues(dev);
 528         if (ret) {
 529                 PMD_DRV_LOG(ERR, "Fail to init queues");
 530                 return ret;
 531         }
 532
 533         if (hw->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
 534                 ret = ice_dcf_init_rss(hw);
 535                 if (ret) {
 536                         PMD_DRV_LOG(ERR, "Failed to configure RSS");
 537                         return ret;
 538                 }
 539         }
 540
 541         ret = ice_dcf_configure_queues(hw);
 542         if (ret) {
 543                 PMD_DRV_LOG(ERR, "Fail to config queues");
 544                 return ret;
 545         }
 546
 547         ret = ice_dcf_config_rx_queues_irqs(dev, intr_handle);
 548         if (ret) {
 549                 PMD_DRV_LOG(ERR, "Fail to config rx queues' irqs");
 550                 return ret;
 551         }
 552
 553         if (dev->data->dev_conf.intr_conf.rxq != 0) {
 554                 rte_intr_disable(intr_handle);
 555                 rte_intr_enable(intr_handle);
 556         }
 557
 558         ret = ice_dcf_start_queues(dev);
 559         if (ret) {
 560                 PMD_DRV_LOG(ERR, "Failed to enable queues");
 561                 return ret;
 562         }
 563
 564         ret = ice_dcf_add_del_all_mac_addr(hw, true);
 565         if (ret) {
 566                 PMD_DRV_LOG(ERR, "Failed to add mac addr");
 567                 return ret;
 568         }
 569
 570         dev->data->dev_link.link_status = RTE_ETH_LINK_UP;
 571
 572         return 0;
 573 }
 574
 575 static void
 576 ice_dcf_stop_queues(struct rte_eth_dev *dev)
 577 {
 578         struct ice_dcf_adapter *ad = dev->data->dev_private;
 579         struct ice_dcf_hw *hw = &ad->real_hw;
 580         struct ice_rx_queue *rxq;
 581         struct ice_tx_queue *txq;
 582         int ret, i;
 583
 584         /* Stop All queues */
 585         ret = ice_dcf_disable_queues(hw);
 586         if (ret)
 587                 PMD_DRV_LOG(WARNING, "Fail to stop queues");
 588
 589         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 590                 txq = dev->data->tx_queues[i];
 591                 if (!txq)
 592                         continue;
 593                 txq->tx_rel_mbufs(txq);
 594                 reset_tx_queue(txq);
 595                 dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
 596         }
 597         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 598                 rxq = dev->data->rx_queues[i];
 599                 if (!rxq)
 600                         continue;
 601                 rxq->rx_rel_mbufs(rxq);
 602                 reset_rx_queue(rxq);
 603                 dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
 604         }
 605 }
 606
 607 static int
 608 ice_dcf_dev_stop(struct rte_eth_dev *dev)
 609 {
 610         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
 611         struct rte_intr_handle *intr_handle = dev->intr_handle;
 612         struct ice_adapter *ad = &dcf_ad->parent;
 613         struct ice_dcf_hw *hw = &dcf_ad->real_hw;
 614
 615         if (ad->pf.adapter_stopped == 1) {
 616                 PMD_DRV_LOG(DEBUG, "Port is already stopped");
 617                 return 0;
 618         }
 619
 620         /* Stop the VF representors for this device */
 621         ice_dcf_vf_repr_stop_all(dcf_ad);
 622
 623         ice_dcf_stop_queues(dev);
 624
 625         rte_intr_efd_disable(intr_handle);
 626         rte_intr_vec_list_free(intr_handle);
 627
 628         ice_dcf_add_del_all_mac_addr(&dcf_ad->real_hw, false);
 629         dev->data->dev_link.link_status = RTE_ETH_LINK_DOWN;
 630         ad->pf.adapter_stopped = 1;
 631         hw->tm_conf.committed = false;
 632
 633         return 0;
 634 }
 635
 636 static int
 637 ice_dcf_dev_configure(struct rte_eth_dev *dev)
 638 {
 639         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
 640         struct ice_adapter *ad = &dcf_ad->parent;
 641
 642         ad->rx_bulk_alloc_allowed = true;
 643         ad->tx_simple_allowed = true;
 644
 645         if (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)
 646                 dev->data->dev_conf.rxmode.offloads |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
 647
 648         return 0;
 649 }
 650
 651 static int
 652 ice_dcf_dev_info_get(struct rte_eth_dev *dev,
 653                      struct rte_eth_dev_info *dev_info)
 654 {
 655         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 656         struct ice_dcf_hw *hw = &adapter->real_hw;
 657
 658         dev_info->max_mac_addrs = 1;
 659         dev_info->max_rx_queues = hw->vsi_res->num_queue_pairs;
 660         dev_info->max_tx_queues = hw->vsi_res->num_queue_pairs;
 661         dev_info->min_rx_bufsize = ICE_BUF_SIZE_MIN;
 662         dev_info->max_rx_pktlen = ICE_FRAME_SIZE_MAX;
 663         dev_info->hash_key_size = hw->vf_res->rss_key_size;
 664         dev_info->reta_size = hw->vf_res->rss_lut_size;
 665         dev_info->flow_type_rss_offloads = ICE_RSS_OFFLOAD_ALL;
 666
 667         dev_info->rx_offload_capa =
 668                 RTE_ETH_RX_OFFLOAD_VLAN_STRIP |
 669                 RTE_ETH_RX_OFFLOAD_IPV4_CKSUM |
 670                 RTE_ETH_RX_OFFLOAD_UDP_CKSUM |
 671                 RTE_ETH_RX_OFFLOAD_TCP_CKSUM |
 672                 RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM |
 673                 RTE_ETH_RX_OFFLOAD_SCATTER |
 674                 RTE_ETH_RX_OFFLOAD_VLAN_FILTER |
 675                 RTE_ETH_RX_OFFLOAD_RSS_HASH;
 676         dev_info->tx_offload_capa =
 677                 RTE_ETH_TX_OFFLOAD_VLAN_INSERT |
 678                 RTE_ETH_TX_OFFLOAD_IPV4_CKSUM |
 679                 RTE_ETH_TX_OFFLOAD_UDP_CKSUM |
 680                 RTE_ETH_TX_OFFLOAD_TCP_CKSUM |
 681                 RTE_ETH_TX_OFFLOAD_SCTP_CKSUM |
 682                 RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM |
 683                 RTE_ETH_TX_OFFLOAD_TCP_TSO |
 684                 RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO |
 685                 RTE_ETH_TX_OFFLOAD_GRE_TNL_TSO |
 686                 RTE_ETH_TX_OFFLOAD_IPIP_TNL_TSO |
 687                 RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO |
 688                 RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
 689
 690         dev_info->default_rxconf = (struct rte_eth_rxconf) {
 691                 .rx_thresh = {
 692                         .pthresh = ICE_DEFAULT_RX_PTHRESH,
 693                         .hthresh = ICE_DEFAULT_RX_HTHRESH,
 694                         .wthresh = ICE_DEFAULT_RX_WTHRESH,
 695                 },
 696                 .rx_free_thresh = ICE_DEFAULT_RX_FREE_THRESH,
 697                 .rx_drop_en = 0,
 698                 .offloads = 0,
 699         };
 700
 701         dev_info->default_txconf = (struct rte_eth_txconf) {
 702                 .tx_thresh = {
 703                         .pthresh = ICE_DEFAULT_TX_PTHRESH,
 704                         .hthresh = ICE_DEFAULT_TX_HTHRESH,
 705                         .wthresh = ICE_DEFAULT_TX_WTHRESH,
 706                 },
 707                 .tx_free_thresh = ICE_DEFAULT_TX_FREE_THRESH,
 708                 .tx_rs_thresh = ICE_DEFAULT_TX_RSBIT_THRESH,
 709                 .offloads = 0,
 710         };
 711
 712         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
 713                 .nb_max = ICE_MAX_RING_DESC,
 714                 .nb_min = ICE_MIN_RING_DESC,
 715                 .nb_align = ICE_ALIGN_RING_DESC,
 716         };
 717
 718         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
 719                 .nb_max = ICE_MAX_RING_DESC,
 720                 .nb_min = ICE_MIN_RING_DESC,
 721                 .nb_align = ICE_ALIGN_RING_DESC,
 722         };
 723
 724         return 0;
 725 }
 726
 727 static int
 728 ice_dcf_dev_promiscuous_enable(__rte_unused struct rte_eth_dev *dev)
 729 {
 730         return 0;
 731 }
 732
 733 static int
 734 ice_dcf_dev_promiscuous_disable(__rte_unused struct rte_eth_dev *dev)
 735 {
 736         return 0;
 737 }
 738
 739 static int
 740 ice_dcf_dev_allmulticast_enable(__rte_unused struct rte_eth_dev *dev)
 741 {
 742         return 0;
 743 }
 744
 745 static int
 746 ice_dcf_dev_allmulticast_disable(__rte_unused struct rte_eth_dev *dev)
 747 {
 748         return 0;
 749 }
 750
 751 static int
 752 ice_dcf_dev_flow_ops_get(struct rte_eth_dev *dev,
 753                          const struct rte_flow_ops **ops)
 754 {
 755         if (!dev)
 756                 return -EINVAL;
 757
 758         *ops = &ice_flow_ops;
 759         return 0;
 760 }
 761
 762 #define ICE_DCF_32_BIT_WIDTH (CHAR_BIT * 4)
 763 #define ICE_DCF_48_BIT_WIDTH (CHAR_BIT * 6)
 764 #define ICE_DCF_48_BIT_MASK  RTE_LEN2MASK(ICE_DCF_48_BIT_WIDTH, uint64_t)
 765
 766 static void
 767 ice_dcf_stat_update_48(uint64_t *offset, uint64_t *stat)
 768 {
 769         if (*stat >= *offset)
 770                 *stat = *stat - *offset;
 771         else
 772                 *stat = (uint64_t)((*stat +
 773                         ((uint64_t)1 << ICE_DCF_48_BIT_WIDTH)) - *offset);
 774
 775         *stat &= ICE_DCF_48_BIT_MASK;
 776 }
 777
 778 static void
 779 ice_dcf_stat_update_32(uint64_t *offset, uint64_t *stat)
 780 {
 781         if (*stat >= *offset)
 782                 *stat = (uint64_t)(*stat - *offset);
 783         else
 784                 *stat = (uint64_t)((*stat +
 785                         ((uint64_t)1 << ICE_DCF_32_BIT_WIDTH)) - *offset);
 786 }
 787
 788 static void
 789 ice_dcf_update_stats(struct virtchnl_eth_stats *oes,
 790                      struct virtchnl_eth_stats *nes)
 791 {
 792         ice_dcf_stat_update_48(&oes->rx_bytes, &nes->rx_bytes);
 793         ice_dcf_stat_update_48(&oes->rx_unicast, &nes->rx_unicast);
 794         ice_dcf_stat_update_48(&oes->rx_multicast, &nes->rx_multicast);
 795         ice_dcf_stat_update_48(&oes->rx_broadcast, &nes->rx_broadcast);
 796         ice_dcf_stat_update_32(&oes->rx_discards, &nes->rx_discards);
 797         ice_dcf_stat_update_48(&oes->tx_bytes, &nes->tx_bytes);
 798         ice_dcf_stat_update_48(&oes->tx_unicast, &nes->tx_unicast);
 799         ice_dcf_stat_update_48(&oes->tx_multicast, &nes->tx_multicast);
 800         ice_dcf_stat_update_48(&oes->tx_broadcast, &nes->tx_broadcast);
 801         ice_dcf_stat_update_32(&oes->tx_errors, &nes->tx_errors);
 802         ice_dcf_stat_update_32(&oes->tx_discards, &nes->tx_discards);
 803 }
 804
 805
 806 static int
 807 ice_dcf_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 808 {
 809         struct ice_dcf_adapter *ad = dev->data->dev_private;
 810         struct ice_dcf_hw *hw = &ad->real_hw;
 811         struct virtchnl_eth_stats pstats;
 812         int ret;
 813
 814         if (hw->resetting) {
 815                 PMD_DRV_LOG(ERR,
 816                             "The DCF has been reset by PF, please reinit first");
 817                 return -EIO;
 818         }
 819
 820         ret = ice_dcf_query_stats(hw, &pstats);
 821         if (ret == 0) {
 822                 ice_dcf_update_stats(&hw->eth_stats_offset, &pstats);
 823                 stats->ipackets = pstats.rx_unicast + pstats.rx_multicast +
 824                                 pstats.rx_broadcast - pstats.rx_discards;
 825                 stats->opackets = pstats.tx_broadcast + pstats.tx_multicast +
 826                                                 pstats.tx_unicast;
 827                 stats->imissed = pstats.rx_discards;
 828                 stats->oerrors = pstats.tx_errors + pstats.tx_discards;
 829                 stats->ibytes = pstats.rx_bytes;
 830                 stats->ibytes -= stats->ipackets * RTE_ETHER_CRC_LEN;
 831                 stats->obytes = pstats.tx_bytes;
 832         } else {
 833                 PMD_DRV_LOG(ERR, "Get statistics failed");
 834         }
 835         return ret;
 836 }
 837
 838 static int
 839 ice_dcf_stats_reset(struct rte_eth_dev *dev)
 840 {
 841         struct ice_dcf_adapter *ad = dev->data->dev_private;
 842         struct ice_dcf_hw *hw = &ad->real_hw;
 843         struct virtchnl_eth_stats pstats;
 844         int ret;
 845
 846         if (hw->resetting)
 847                 return 0;
 848
 849         /* read stat values to clear hardware registers */
 850         ret = ice_dcf_query_stats(hw, &pstats);
 851         if (ret != 0)
 852                 return ret;
 853
 854         /* set stats offset base on current values */
 855         hw->eth_stats_offset = pstats;
 856
 857         return 0;
 858 }
 859
 860 static void
 861 ice_dcf_free_repr_info(struct ice_dcf_adapter *dcf_adapter)
 862 {
 863         if (dcf_adapter->repr_infos) {
 864                 rte_free(dcf_adapter->repr_infos);
 865                 dcf_adapter->repr_infos = NULL;
 866         }
 867 }
 868
 869 static int
 870 ice_dcf_init_repr_info(struct ice_dcf_adapter *dcf_adapter)
 871 {
 872         dcf_adapter->repr_infos =
 873                         rte_calloc("ice_dcf_rep_info",
 874                                    dcf_adapter->real_hw.num_vfs,
 875                                    sizeof(dcf_adapter->repr_infos[0]), 0);
 876         if (!dcf_adapter->repr_infos) {
 877                 PMD_DRV_LOG(ERR, "Failed to alloc memory for VF representors\n");
 878                 return -ENOMEM;
 879         }
 880
 881         return 0;
 882 }
 883
 884 static int
 885 ice_dcf_dev_close(struct rte_eth_dev *dev)
 886 {
 887         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 888
 889         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 890                 return 0;
 891
 892         (void)ice_dcf_dev_stop(dev);
 893
 894         ice_free_queues(dev);
 895
 896         ice_dcf_free_repr_info(adapter);
 897         ice_dcf_uninit_parent_adapter(dev);
 898         ice_dcf_uninit_hw(dev, &adapter->real_hw);
 899
 900         return 0;
 901 }
 902
 903 int
 904 ice_dcf_link_update(struct rte_eth_dev *dev,
 905                     __rte_unused int wait_to_complete)
 906 {
 907         struct ice_dcf_adapter *ad = dev->data->dev_private;
 908         struct ice_dcf_hw *hw = &ad->real_hw;
 909         struct rte_eth_link new_link;
 910
 911         memset(&new_link, 0, sizeof(new_link));
 912
 913         /* Only read status info stored in VF, and the info is updated
 914          * when receive LINK_CHANGE event from PF by virtchnl.
 915          */
 916         switch (hw->link_speed) {
 917         case 10:
 918                 new_link.link_speed = RTE_ETH_SPEED_NUM_10M;
 919                 break;
 920         case 100:
 921                 new_link.link_speed = RTE_ETH_SPEED_NUM_100M;
 922                 break;
 923         case 1000:
 924                 new_link.link_speed = RTE_ETH_SPEED_NUM_1G;
 925                 break;
 926         case 10000:
 927                 new_link.link_speed = RTE_ETH_SPEED_NUM_10G;
 928                 break;
 929         case 20000:
 930                 new_link.link_speed = RTE_ETH_SPEED_NUM_20G;
 931                 break;
 932         case 25000:
 933                 new_link.link_speed = RTE_ETH_SPEED_NUM_25G;
 934                 break;
 935         case 40000:
 936                 new_link.link_speed = RTE_ETH_SPEED_NUM_40G;
 937                 break;
 938         case 50000:
 939                 new_link.link_speed = RTE_ETH_SPEED_NUM_50G;
 940                 break;
 941         case 100000:
 942                 new_link.link_speed = RTE_ETH_SPEED_NUM_100G;
 943                 break;
 944         default:
 945                 new_link.link_speed = RTE_ETH_SPEED_NUM_NONE;
 946                 break;
 947         }
 948
 949         new_link.link_duplex = RTE_ETH_LINK_FULL_DUPLEX;
 950         new_link.link_status = hw->link_up ? RTE_ETH_LINK_UP :
 951                                              RTE_ETH_LINK_DOWN;
 952         new_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 953                                 RTE_ETH_LINK_SPEED_FIXED);
 954
 955         return rte_eth_linkstatus_set(dev, &new_link);
 956 }
 957
 958 /* Add UDP tunneling port */
 959 static int
 960 ice_dcf_dev_udp_tunnel_port_add(struct rte_eth_dev *dev,
 961                                 struct rte_eth_udp_tunnel *udp_tunnel)
 962 {
 963         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 964         struct ice_adapter *parent_adapter = &adapter->parent;
 965         struct ice_hw *parent_hw = &parent_adapter->hw;
 966         int ret = 0;
 967
 968         if (!udp_tunnel)
 969                 return -EINVAL;
 970
 971         switch (udp_tunnel->prot_type) {
 972         case RTE_ETH_TUNNEL_TYPE_VXLAN:
 973                 ret = ice_create_tunnel(parent_hw, TNL_VXLAN,
 974                                         udp_tunnel->udp_port);
 975                 break;
 976         case RTE_ETH_TUNNEL_TYPE_ECPRI:
 977                 ret = ice_create_tunnel(parent_hw, TNL_ECPRI,
 978                                         udp_tunnel->udp_port);
 979                 break;
 980         default:
 981                 PMD_DRV_LOG(ERR, "Invalid tunnel type");
 982                 ret = -EINVAL;
 983                 break;
 984         }
 985
 986         return ret;
 987 }
 988
 989 /* Delete UDP tunneling port */
 990 static int
 991 ice_dcf_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
 992                                 struct rte_eth_udp_tunnel *udp_tunnel)
 993 {
 994         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 995         struct ice_adapter *parent_adapter = &adapter->parent;
 996         struct ice_hw *parent_hw = &parent_adapter->hw;
 997         int ret = 0;
 998
 999         if (!udp_tunnel)
1000                 return -EINVAL;
1001
1002         switch (udp_tunnel->prot_type) {
1003         case RTE_ETH_TUNNEL_TYPE_VXLAN:
1004         case RTE_ETH_TUNNEL_TYPE_ECPRI:
1005                 ret = ice_destroy_tunnel(parent_hw, udp_tunnel->udp_port, 0);
1006                 break;
1007         default:
1008                 PMD_DRV_LOG(ERR, "Invalid tunnel type");
1009                 ret = -EINVAL;
1010                 break;
1011         }
1012
1013         return ret;
1014 }
1015
1016 static int
1017 ice_dcf_tm_ops_get(struct rte_eth_dev *dev __rte_unused,
1018                 void *arg)
1019 {
1020         if (!arg)
1021                 return -EINVAL;
1022
1023         *(const void **)arg = &ice_dcf_tm_ops;
1024
1025         return 0;
1026 }
1027
1028 static inline void
1029 ice_dcf_reset_hw(struct rte_eth_dev *eth_dev, struct ice_dcf_hw *hw)
1030 {
1031         ice_dcf_uninit_hw(eth_dev, hw);
1032         ice_dcf_init_hw(eth_dev, hw);
1033 }
1034
1035 /* Check if reset has been triggered by PF */
1036 static inline bool
1037 ice_dcf_is_reset(struct rte_eth_dev *dev)
1038 {
1039         struct ice_dcf_adapter *ad = dev->data->dev_private;
1040         struct iavf_hw *hw = &ad->real_hw.avf;
1041
1042         return !(IAVF_READ_REG(hw, IAVF_VF_ARQLEN1) &
1043                  IAVF_VF_ARQLEN1_ARQENABLE_MASK);
1044 }
1045
1046 static int
1047 ice_dcf_dev_reset(struct rte_eth_dev *dev)
1048 {
1049         struct ice_dcf_adapter *ad = dev->data->dev_private;
1050         struct ice_dcf_hw *hw = &ad->real_hw;
1051         int ret;
1052
1053         if (ice_dcf_is_reset(dev)) {
1054                 if (!ad->real_hw.resetting)
1055                         ad->real_hw.resetting = true;
1056                 PMD_DRV_LOG(ERR, "The DCF has been reset by PF");
1057
1058                 /*
1059                  * Simply reset hw to trigger an additional DCF enable/disable
1060                  * cycle which help to workaround the issue that kernel driver
1061                  * may not clean up resource during previous reset.
1062                  */
1063                 ice_dcf_reset_hw(dev, hw);
1064         }
1065
1066         ret = ice_dcf_dev_uninit(dev);
1067         if (ret)
1068                 return ret;
1069
1070         ret = ice_dcf_dev_init(dev);
1071
1072         return ret;
1073 }
1074
1075 static const struct eth_dev_ops ice_dcf_eth_dev_ops = {
1076         .dev_start               = ice_dcf_dev_start,
1077         .dev_stop                = ice_dcf_dev_stop,
1078         .dev_close               = ice_dcf_dev_close,
1079         .dev_reset               = ice_dcf_dev_reset,
1080         .dev_configure           = ice_dcf_dev_configure,
1081         .dev_infos_get           = ice_dcf_dev_info_get,
1082         .rx_queue_setup          = ice_rx_queue_setup,
1083         .tx_queue_setup          = ice_tx_queue_setup,
1084         .rx_queue_release        = ice_dev_rx_queue_release,
1085         .tx_queue_release        = ice_dev_tx_queue_release,
1086         .rx_queue_start          = ice_dcf_rx_queue_start,
1087         .tx_queue_start          = ice_dcf_tx_queue_start,
1088         .rx_queue_stop           = ice_dcf_rx_queue_stop,
1089         .tx_queue_stop           = ice_dcf_tx_queue_stop,
1090         .link_update             = ice_dcf_link_update,
1091         .stats_get               = ice_dcf_stats_get,
1092         .stats_reset             = ice_dcf_stats_reset,
1093         .promiscuous_enable      = ice_dcf_dev_promiscuous_enable,
1094         .promiscuous_disable     = ice_dcf_dev_promiscuous_disable,
1095         .allmulticast_enable     = ice_dcf_dev_allmulticast_enable,
1096         .allmulticast_disable    = ice_dcf_dev_allmulticast_disable,
1097         .flow_ops_get            = ice_dcf_dev_flow_ops_get,
1098         .udp_tunnel_port_add     = ice_dcf_dev_udp_tunnel_port_add,
1099         .udp_tunnel_port_del     = ice_dcf_dev_udp_tunnel_port_del,
1100         .tm_ops_get              = ice_dcf_tm_ops_get,
1101 };
1102
1103 static int
1104 ice_dcf_dev_init(struct rte_eth_dev *eth_dev)
1105 {
1106         struct ice_dcf_adapter *adapter = eth_dev->data->dev_private;
1107
1108         eth_dev->dev_ops = &ice_dcf_eth_dev_ops;
1109         eth_dev->rx_pkt_burst = ice_dcf_recv_pkts;
1110         eth_dev->tx_pkt_burst = ice_dcf_xmit_pkts;
1111
1112         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1113                 return 0;
1114
1115         adapter->real_hw.vc_event_msg_cb = ice_dcf_handle_pf_event_msg;
1116         if (ice_dcf_init_hw(eth_dev, &adapter->real_hw) != 0) {
1117                 PMD_INIT_LOG(ERR, "Failed to init DCF hardware");
1118                 return -1;
1119         }
1120
1121         if (ice_dcf_init_parent_adapter(eth_dev) != 0) {
1122                 PMD_INIT_LOG(ERR, "Failed to init DCF parent adapter");
1123                 ice_dcf_uninit_hw(eth_dev, &adapter->real_hw);
1124                 return -1;
1125         }
1126
1127         return 0;
1128 }
1129
1130 static int
1131 ice_dcf_dev_uninit(struct rte_eth_dev *eth_dev)
1132 {
1133         ice_dcf_dev_close(eth_dev);
1134
1135         return 0;
1136 }
1137
1138 static int
1139 ice_dcf_cap_check_handler(__rte_unused const char *key,
1140                           const char *value, __rte_unused void *opaque)
1141 {
1142         if (strcmp(value, "dcf"))
1143                 return -1;
1144
1145         return 0;
1146 }
1147
1148 static int
1149 ice_dcf_cap_selected(struct rte_devargs *devargs)
1150 {
1151         struct rte_kvargs *kvlist;
1152         const char *key = "cap";
1153         int ret = 0;
1154
1155         if (devargs == NULL)
1156                 return 0;
1157
1158         kvlist = rte_kvargs_parse(devargs->args, NULL);
1159         if (kvlist == NULL)
1160                 return 0;
1161
1162         if (!rte_kvargs_count(kvlist, key))
1163                 goto exit;
1164
1165         /* dcf capability selected when there's a key-value pair: cap=dcf */
1166         if (rte_kvargs_process(kvlist, key,
1167                                ice_dcf_cap_check_handler, NULL) < 0)
1168                 goto exit;
1169
1170         ret = 1;
1171
1172 exit:
1173         rte_kvargs_free(kvlist);
1174         return ret;
1175 }
1176
1177 static int
1178 eth_ice_dcf_pci_probe(__rte_unused struct rte_pci_driver *pci_drv,
1179                       struct rte_pci_device *pci_dev)
1180 {
1181         struct rte_eth_devargs eth_da = { .nb_representor_ports = 0 };
1182         struct ice_dcf_vf_repr_param repr_param;
1183         char repr_name[RTE_ETH_NAME_MAX_LEN];
1184         struct ice_dcf_adapter *dcf_adapter;
1185         struct rte_eth_dev *dcf_ethdev;
1186         uint16_t dcf_vsi_id;
1187         int i, ret;
1188
1189         if (!ice_dcf_cap_selected(pci_dev->device.devargs))
1190                 return 1;
1191
1192         ret = rte_eth_devargs_parse(pci_dev->device.devargs->args, &eth_da);
1193         if (ret)
1194                 return ret;
1195
1196         ret = rte_eth_dev_pci_generic_probe(pci_dev,
1197                                             sizeof(struct ice_dcf_adapter),
1198                                             ice_dcf_dev_init);
1199         if (ret || !eth_da.nb_representor_ports)
1200                 return ret;
1201         if (eth_da.type != RTE_ETH_REPRESENTOR_VF)
1202                 return -ENOTSUP;
1203
1204         dcf_ethdev = rte_eth_dev_allocated(pci_dev->device.name);
1205         if (dcf_ethdev == NULL)
1206                 return -ENODEV;
1207
1208         dcf_adapter = dcf_ethdev->data->dev_private;
1209         ret = ice_dcf_init_repr_info(dcf_adapter);
1210         if (ret)
1211                 return ret;
1212
1213         if (eth_da.nb_representor_ports > dcf_adapter->real_hw.num_vfs ||
1214             eth_da.nb_representor_ports >= RTE_MAX_ETHPORTS) {
1215                 PMD_DRV_LOG(ERR, "the number of port representors is too large: %u",
1216                             eth_da.nb_representor_ports);
1217                 ice_dcf_free_repr_info(dcf_adapter);
1218                 return -EINVAL;
1219         }
1220
1221         dcf_vsi_id = dcf_adapter->real_hw.vsi_id | VIRTCHNL_DCF_VF_VSI_VALID;
1222
1223         repr_param.dcf_eth_dev = dcf_ethdev;
1224         repr_param.switch_domain_id = 0;
1225
1226         for (i = 0; i < eth_da.nb_representor_ports; i++) {
1227                 uint16_t vf_id = eth_da.representor_ports[i];
1228                 struct rte_eth_dev *vf_rep_eth_dev;
1229
1230                 if (vf_id >= dcf_adapter->real_hw.num_vfs) {
1231                         PMD_DRV_LOG(ERR, "VF ID %u is out of range (0 ~ %u)",
1232                                     vf_id, dcf_adapter->real_hw.num_vfs - 1);
1233                         ret = -EINVAL;
1234                         break;
1235                 }
1236
1237                 if (dcf_adapter->real_hw.vf_vsi_map[vf_id] == dcf_vsi_id) {
1238                         PMD_DRV_LOG(ERR, "VF ID %u is DCF's ID.\n", vf_id);
1239                         ret = -EINVAL;
1240                         break;
1241                 }
1242
1243                 repr_param.vf_id = vf_id;
1244                 snprintf(repr_name, sizeof(repr_name), "net_%s_representor_%u",
1245                          pci_dev->device.name, vf_id);
1246                 ret = rte_eth_dev_create(&pci_dev->device, repr_name,
1247                                          sizeof(struct ice_dcf_vf_repr),
1248                                          NULL, NULL, ice_dcf_vf_repr_init,
1249                                          &repr_param);
1250                 if (ret) {
1251                         PMD_DRV_LOG(ERR, "failed to create DCF VF representor %s",
1252                                     repr_name);
1253                         break;
1254                 }
1255
1256                 vf_rep_eth_dev = rte_eth_dev_allocated(repr_name);
1257                 if (!vf_rep_eth_dev) {
1258                         PMD_DRV_LOG(ERR,
1259                                     "Failed to find the ethdev for DCF VF representor: %s",
1260                                     repr_name);
1261                         ret = -ENODEV;
1262                         break;
1263                 }
1264
1265                 dcf_adapter->repr_infos[vf_id].vf_rep_eth_dev = vf_rep_eth_dev;
1266                 dcf_adapter->num_reprs++;
1267         }
1268
1269         return ret;
1270 }
1271
1272 static int
1273 eth_ice_dcf_pci_remove(struct rte_pci_device *pci_dev)
1274 {
1275         struct rte_eth_dev *eth_dev;
1276
1277         eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
1278         if (!eth_dev)
1279                 return 0;
1280
1281         if (eth_dev->data->dev_flags & RTE_ETH_DEV_REPRESENTOR)
1282                 return rte_eth_dev_pci_generic_remove(pci_dev,
1283                                                       ice_dcf_vf_repr_uninit);
1284         else
1285                 return rte_eth_dev_pci_generic_remove(pci_dev,
1286                                                       ice_dcf_dev_uninit);
1287 }
1288
1289 static const struct rte_pci_id pci_id_ice_dcf_map[] = {
1290         { RTE_PCI_DEVICE(IAVF_INTEL_VENDOR_ID, IAVF_DEV_ID_ADAPTIVE_VF) },
1291         { .vendor_id = 0, /* sentinel */ },
1292 };
1293
1294 static struct rte_pci_driver rte_ice_dcf_pmd = {
1295         .id_table = pci_id_ice_dcf_map,
1296         .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
1297         .probe = eth_ice_dcf_pci_probe,
1298         .remove = eth_ice_dcf_pci_remove,
1299 };
1300
1301 RTE_PMD_REGISTER_PCI(net_ice_dcf, rte_ice_dcf_pmd);
1302 RTE_PMD_REGISTER_PCI_TABLE(net_ice_dcf, pci_id_ice_dcf_map);
1303 RTE_PMD_REGISTER_KMOD_DEP(net_ice_dcf, "* igb_uio | vfio-pci");
1304 RTE_PMD_REGISTER_PARAM_STRING(net_ice_dcf, "cap=dcf");