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 * RTE_VLAN_HLEN) > 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         dev_info->dev_capa &= ~RTE_ETH_DEV_CAPA_FLOW_RULE_KEEP;
 667
 668         dev_info->rx_offload_capa =
 669                 RTE_ETH_RX_OFFLOAD_VLAN_STRIP |
 670                 RTE_ETH_RX_OFFLOAD_IPV4_CKSUM |
 671                 RTE_ETH_RX_OFFLOAD_UDP_CKSUM |
 672                 RTE_ETH_RX_OFFLOAD_TCP_CKSUM |
 673                 RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM |
 674                 RTE_ETH_RX_OFFLOAD_SCATTER |
 675                 RTE_ETH_RX_OFFLOAD_VLAN_FILTER |
 676                 RTE_ETH_RX_OFFLOAD_RSS_HASH;
 677         dev_info->tx_offload_capa =
 678                 RTE_ETH_TX_OFFLOAD_VLAN_INSERT |
 679                 RTE_ETH_TX_OFFLOAD_IPV4_CKSUM |
 680                 RTE_ETH_TX_OFFLOAD_UDP_CKSUM |
 681                 RTE_ETH_TX_OFFLOAD_TCP_CKSUM |
 682                 RTE_ETH_TX_OFFLOAD_SCTP_CKSUM |
 683                 RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM |
 684                 RTE_ETH_TX_OFFLOAD_TCP_TSO |
 685                 RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO |
 686                 RTE_ETH_TX_OFFLOAD_GRE_TNL_TSO |
 687                 RTE_ETH_TX_OFFLOAD_IPIP_TNL_TSO |
 688                 RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO |
 689                 RTE_ETH_TX_OFFLOAD_MULTI_SEGS;
 690
 691         dev_info->default_rxconf = (struct rte_eth_rxconf) {
 692                 .rx_thresh = {
 693                         .pthresh = ICE_DEFAULT_RX_PTHRESH,
 694                         .hthresh = ICE_DEFAULT_RX_HTHRESH,
 695                         .wthresh = ICE_DEFAULT_RX_WTHRESH,
 696                 },
 697                 .rx_free_thresh = ICE_DEFAULT_RX_FREE_THRESH,
 698                 .rx_drop_en = 0,
 699                 .offloads = 0,
 700         };
 701
 702         dev_info->default_txconf = (struct rte_eth_txconf) {
 703                 .tx_thresh = {
 704                         .pthresh = ICE_DEFAULT_TX_PTHRESH,
 705                         .hthresh = ICE_DEFAULT_TX_HTHRESH,
 706                         .wthresh = ICE_DEFAULT_TX_WTHRESH,
 707                 },
 708                 .tx_free_thresh = ICE_DEFAULT_TX_FREE_THRESH,
 709                 .tx_rs_thresh = ICE_DEFAULT_TX_RSBIT_THRESH,
 710                 .offloads = 0,
 711         };
 712
 713         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
 714                 .nb_max = ICE_MAX_RING_DESC,
 715                 .nb_min = ICE_MIN_RING_DESC,
 716                 .nb_align = ICE_ALIGN_RING_DESC,
 717         };
 718
 719         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
 720                 .nb_max = ICE_MAX_RING_DESC,
 721                 .nb_min = ICE_MIN_RING_DESC,
 722                 .nb_align = ICE_ALIGN_RING_DESC,
 723         };
 724
 725         return 0;
 726 }
 727
 728 static int
 729 ice_dcf_dev_promiscuous_enable(__rte_unused struct rte_eth_dev *dev)
 730 {
 731         return 0;
 732 }
 733
 734 static int
 735 ice_dcf_dev_promiscuous_disable(__rte_unused struct rte_eth_dev *dev)
 736 {
 737         return 0;
 738 }
 739
 740 static int
 741 ice_dcf_dev_allmulticast_enable(__rte_unused struct rte_eth_dev *dev)
 742 {
 743         return 0;
 744 }
 745
 746 static int
 747 ice_dcf_dev_allmulticast_disable(__rte_unused struct rte_eth_dev *dev)
 748 {
 749         return 0;
 750 }
 751
 752 static int
 753 ice_dcf_dev_flow_ops_get(struct rte_eth_dev *dev,
 754                          const struct rte_flow_ops **ops)
 755 {
 756         if (!dev)
 757                 return -EINVAL;
 758
 759         *ops = &ice_flow_ops;
 760         return 0;
 761 }
 762
 763 #define ICE_DCF_32_BIT_WIDTH (CHAR_BIT * 4)
 764 #define ICE_DCF_48_BIT_WIDTH (CHAR_BIT * 6)
 765 #define ICE_DCF_48_BIT_MASK  RTE_LEN2MASK(ICE_DCF_48_BIT_WIDTH, uint64_t)
 766
 767 static void
 768 ice_dcf_stat_update_48(uint64_t *offset, uint64_t *stat)
 769 {
 770         if (*stat >= *offset)
 771                 *stat = *stat - *offset;
 772         else
 773                 *stat = (uint64_t)((*stat +
 774                         ((uint64_t)1 << ICE_DCF_48_BIT_WIDTH)) - *offset);
 775
 776         *stat &= ICE_DCF_48_BIT_MASK;
 777 }
 778
 779 static void
 780 ice_dcf_stat_update_32(uint64_t *offset, uint64_t *stat)
 781 {
 782         if (*stat >= *offset)
 783                 *stat = (uint64_t)(*stat - *offset);
 784         else
 785                 *stat = (uint64_t)((*stat +
 786                         ((uint64_t)1 << ICE_DCF_32_BIT_WIDTH)) - *offset);
 787 }
 788
 789 static void
 790 ice_dcf_update_stats(struct virtchnl_eth_stats *oes,
 791                      struct virtchnl_eth_stats *nes)
 792 {
 793         ice_dcf_stat_update_48(&oes->rx_bytes, &nes->rx_bytes);
 794         ice_dcf_stat_update_48(&oes->rx_unicast, &nes->rx_unicast);
 795         ice_dcf_stat_update_48(&oes->rx_multicast, &nes->rx_multicast);
 796         ice_dcf_stat_update_48(&oes->rx_broadcast, &nes->rx_broadcast);
 797         ice_dcf_stat_update_32(&oes->rx_discards, &nes->rx_discards);
 798         ice_dcf_stat_update_48(&oes->tx_bytes, &nes->tx_bytes);
 799         ice_dcf_stat_update_48(&oes->tx_unicast, &nes->tx_unicast);
 800         ice_dcf_stat_update_48(&oes->tx_multicast, &nes->tx_multicast);
 801         ice_dcf_stat_update_48(&oes->tx_broadcast, &nes->tx_broadcast);
 802         ice_dcf_stat_update_32(&oes->tx_errors, &nes->tx_errors);
 803         ice_dcf_stat_update_32(&oes->tx_discards, &nes->tx_discards);
 804 }
 805
 806
 807 static int
 808 ice_dcf_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 809 {
 810         struct ice_dcf_adapter *ad = dev->data->dev_private;
 811         struct ice_dcf_hw *hw = &ad->real_hw;
 812         struct virtchnl_eth_stats pstats;
 813         int ret;
 814
 815         if (hw->resetting) {
 816                 PMD_DRV_LOG(ERR,
 817                             "The DCF has been reset by PF, please reinit first");
 818                 return -EIO;
 819         }
 820
 821         ret = ice_dcf_query_stats(hw, &pstats);
 822         if (ret == 0) {
 823                 ice_dcf_update_stats(&hw->eth_stats_offset, &pstats);
 824                 stats->ipackets = pstats.rx_unicast + pstats.rx_multicast +
 825                                 pstats.rx_broadcast - pstats.rx_discards;
 826                 stats->opackets = pstats.tx_broadcast + pstats.tx_multicast +
 827                                                 pstats.tx_unicast;
 828                 stats->imissed = pstats.rx_discards;
 829                 stats->oerrors = pstats.tx_errors + pstats.tx_discards;
 830                 stats->ibytes = pstats.rx_bytes;
 831                 stats->ibytes -= stats->ipackets * RTE_ETHER_CRC_LEN;
 832                 stats->obytes = pstats.tx_bytes;
 833         } else {
 834                 PMD_DRV_LOG(ERR, "Get statistics failed");
 835         }
 836         return ret;
 837 }
 838
 839 static int
 840 ice_dcf_stats_reset(struct rte_eth_dev *dev)
 841 {
 842         struct ice_dcf_adapter *ad = dev->data->dev_private;
 843         struct ice_dcf_hw *hw = &ad->real_hw;
 844         struct virtchnl_eth_stats pstats;
 845         int ret;
 846
 847         if (hw->resetting)
 848                 return 0;
 849
 850         /* read stat values to clear hardware registers */
 851         ret = ice_dcf_query_stats(hw, &pstats);
 852         if (ret != 0)
 853                 return ret;
 854
 855         /* set stats offset base on current values */
 856         hw->eth_stats_offset = pstats;
 857
 858         return 0;
 859 }
 860
 861 static void
 862 ice_dcf_free_repr_info(struct ice_dcf_adapter *dcf_adapter)
 863 {
 864         if (dcf_adapter->repr_infos) {
 865                 rte_free(dcf_adapter->repr_infos);
 866                 dcf_adapter->repr_infos = NULL;
 867         }
 868 }
 869
 870 static int
 871 ice_dcf_init_repr_info(struct ice_dcf_adapter *dcf_adapter)
 872 {
 873         dcf_adapter->repr_infos =
 874                         rte_calloc("ice_dcf_rep_info",
 875                                    dcf_adapter->real_hw.num_vfs,
 876                                    sizeof(dcf_adapter->repr_infos[0]), 0);
 877         if (!dcf_adapter->repr_infos) {
 878                 PMD_DRV_LOG(ERR, "Failed to alloc memory for VF representors\n");
 879                 return -ENOMEM;
 880         }
 881
 882         return 0;
 883 }
 884
 885 static int
 886 ice_dcf_dev_close(struct rte_eth_dev *dev)
 887 {
 888         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 889
 890         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 891                 return 0;
 892
 893         (void)ice_dcf_dev_stop(dev);
 894
 895         ice_free_queues(dev);
 896
 897         ice_dcf_free_repr_info(adapter);
 898         ice_dcf_uninit_parent_adapter(dev);
 899         ice_dcf_uninit_hw(dev, &adapter->real_hw);
 900
 901         return 0;
 902 }
 903
 904 int
 905 ice_dcf_link_update(struct rte_eth_dev *dev,
 906                     __rte_unused int wait_to_complete)
 907 {
 908         struct ice_dcf_adapter *ad = dev->data->dev_private;
 909         struct ice_dcf_hw *hw = &ad->real_hw;
 910         struct rte_eth_link new_link;
 911
 912         memset(&new_link, 0, sizeof(new_link));
 913
 914         /* Only read status info stored in VF, and the info is updated
 915          * when receive LINK_CHANGE event from PF by virtchnl.
 916          */
 917         switch (hw->link_speed) {
 918         case 10:
 919                 new_link.link_speed = RTE_ETH_SPEED_NUM_10M;
 920                 break;
 921         case 100:
 922                 new_link.link_speed = RTE_ETH_SPEED_NUM_100M;
 923                 break;
 924         case 1000:
 925                 new_link.link_speed = RTE_ETH_SPEED_NUM_1G;
 926                 break;
 927         case 10000:
 928                 new_link.link_speed = RTE_ETH_SPEED_NUM_10G;
 929                 break;
 930         case 20000:
 931                 new_link.link_speed = RTE_ETH_SPEED_NUM_20G;
 932                 break;
 933         case 25000:
 934                 new_link.link_speed = RTE_ETH_SPEED_NUM_25G;
 935                 break;
 936         case 40000:
 937                 new_link.link_speed = RTE_ETH_SPEED_NUM_40G;
 938                 break;
 939         case 50000:
 940                 new_link.link_speed = RTE_ETH_SPEED_NUM_50G;
 941                 break;
 942         case 100000:
 943                 new_link.link_speed = RTE_ETH_SPEED_NUM_100G;
 944                 break;
 945         default:
 946                 new_link.link_speed = RTE_ETH_SPEED_NUM_NONE;
 947                 break;
 948         }
 949
 950         new_link.link_duplex = RTE_ETH_LINK_FULL_DUPLEX;
 951         new_link.link_status = hw->link_up ? RTE_ETH_LINK_UP :
 952                                              RTE_ETH_LINK_DOWN;
 953         new_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 954                                 RTE_ETH_LINK_SPEED_FIXED);
 955
 956         return rte_eth_linkstatus_set(dev, &new_link);
 957 }
 958
 959 /* Add UDP tunneling port */
 960 static int
 961 ice_dcf_dev_udp_tunnel_port_add(struct rte_eth_dev *dev,
 962                                 struct rte_eth_udp_tunnel *udp_tunnel)
 963 {
 964         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 965         struct ice_adapter *parent_adapter = &adapter->parent;
 966         struct ice_hw *parent_hw = &parent_adapter->hw;
 967         int ret = 0;
 968
 969         if (!udp_tunnel)
 970                 return -EINVAL;
 971
 972         switch (udp_tunnel->prot_type) {
 973         case RTE_ETH_TUNNEL_TYPE_VXLAN:
 974                 ret = ice_create_tunnel(parent_hw, TNL_VXLAN,
 975                                         udp_tunnel->udp_port);
 976                 break;
 977         case RTE_ETH_TUNNEL_TYPE_ECPRI:
 978                 ret = ice_create_tunnel(parent_hw, TNL_ECPRI,
 979                                         udp_tunnel->udp_port);
 980                 break;
 981         default:
 982                 PMD_DRV_LOG(ERR, "Invalid tunnel type");
 983                 ret = -EINVAL;
 984                 break;
 985         }
 986
 987         return ret;
 988 }
 989
 990 /* Delete UDP tunneling port */
 991 static int
 992 ice_dcf_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
 993                                 struct rte_eth_udp_tunnel *udp_tunnel)
 994 {
 995         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 996         struct ice_adapter *parent_adapter = &adapter->parent;
 997         struct ice_hw *parent_hw = &parent_adapter->hw;
 998         int ret = 0;
 999
1000         if (!udp_tunnel)
1001                 return -EINVAL;
1002
1003         switch (udp_tunnel->prot_type) {
1004         case RTE_ETH_TUNNEL_TYPE_VXLAN:
1005         case RTE_ETH_TUNNEL_TYPE_ECPRI:
1006                 ret = ice_destroy_tunnel(parent_hw, udp_tunnel->udp_port, 0);
1007                 break;
1008         default:
1009                 PMD_DRV_LOG(ERR, "Invalid tunnel type");
1010                 ret = -EINVAL;
1011                 break;
1012         }
1013
1014         return ret;
1015 }
1016
1017 static int
1018 ice_dcf_tm_ops_get(struct rte_eth_dev *dev __rte_unused,
1019                 void *arg)
1020 {
1021         if (!arg)
1022                 return -EINVAL;
1023
1024         *(const void **)arg = &ice_dcf_tm_ops;
1025
1026         return 0;
1027 }
1028
1029 static inline void
1030 ice_dcf_reset_hw(struct rte_eth_dev *eth_dev, struct ice_dcf_hw *hw)
1031 {
1032         ice_dcf_uninit_hw(eth_dev, hw);
1033         ice_dcf_init_hw(eth_dev, hw);
1034 }
1035
1036 /* Check if reset has been triggered by PF */
1037 static inline bool
1038 ice_dcf_is_reset(struct rte_eth_dev *dev)
1039 {
1040         struct ice_dcf_adapter *ad = dev->data->dev_private;
1041         struct iavf_hw *hw = &ad->real_hw.avf;
1042
1043         return !(IAVF_READ_REG(hw, IAVF_VF_ARQLEN1) &
1044                  IAVF_VF_ARQLEN1_ARQENABLE_MASK);
1045 }
1046
1047 static int
1048 ice_dcf_dev_reset(struct rte_eth_dev *dev)
1049 {
1050         struct ice_dcf_adapter *ad = dev->data->dev_private;
1051         struct ice_dcf_hw *hw = &ad->real_hw;
1052         int ret;
1053
1054         if (ice_dcf_is_reset(dev)) {
1055                 if (!ad->real_hw.resetting)
1056                         ad->real_hw.resetting = true;
1057                 PMD_DRV_LOG(ERR, "The DCF has been reset by PF");
1058
1059                 /*
1060                  * Simply reset hw to trigger an additional DCF enable/disable
1061                  * cycle which help to workaround the issue that kernel driver
1062                  * may not clean up resource during previous reset.
1063                  */
1064                 ice_dcf_reset_hw(dev, hw);
1065         }
1066
1067         ret = ice_dcf_dev_uninit(dev);
1068         if (ret)
1069                 return ret;
1070
1071         ret = ice_dcf_dev_init(dev);
1072
1073         return ret;
1074 }
1075
1076 static const struct eth_dev_ops ice_dcf_eth_dev_ops = {
1077         .dev_start               = ice_dcf_dev_start,
1078         .dev_stop                = ice_dcf_dev_stop,
1079         .dev_close               = ice_dcf_dev_close,
1080         .dev_reset               = ice_dcf_dev_reset,
1081         .dev_configure           = ice_dcf_dev_configure,
1082         .dev_infos_get           = ice_dcf_dev_info_get,
1083         .rx_queue_setup          = ice_rx_queue_setup,
1084         .tx_queue_setup          = ice_tx_queue_setup,
1085         .rx_queue_release        = ice_dev_rx_queue_release,
1086         .tx_queue_release        = ice_dev_tx_queue_release,
1087         .rx_queue_start          = ice_dcf_rx_queue_start,
1088         .tx_queue_start          = ice_dcf_tx_queue_start,
1089         .rx_queue_stop           = ice_dcf_rx_queue_stop,
1090         .tx_queue_stop           = ice_dcf_tx_queue_stop,
1091         .link_update             = ice_dcf_link_update,
1092         .stats_get               = ice_dcf_stats_get,
1093         .stats_reset             = ice_dcf_stats_reset,
1094         .promiscuous_enable      = ice_dcf_dev_promiscuous_enable,
1095         .promiscuous_disable     = ice_dcf_dev_promiscuous_disable,
1096         .allmulticast_enable     = ice_dcf_dev_allmulticast_enable,
1097         .allmulticast_disable    = ice_dcf_dev_allmulticast_disable,
1098         .flow_ops_get            = ice_dcf_dev_flow_ops_get,
1099         .udp_tunnel_port_add     = ice_dcf_dev_udp_tunnel_port_add,
1100         .udp_tunnel_port_del     = ice_dcf_dev_udp_tunnel_port_del,
1101         .tm_ops_get              = ice_dcf_tm_ops_get,
1102 };
1103
1104 static int
1105 ice_dcf_dev_init(struct rte_eth_dev *eth_dev)
1106 {
1107         struct ice_dcf_adapter *adapter = eth_dev->data->dev_private;
1108
1109         eth_dev->dev_ops = &ice_dcf_eth_dev_ops;
1110         eth_dev->rx_pkt_burst = ice_dcf_recv_pkts;
1111         eth_dev->tx_pkt_burst = ice_dcf_xmit_pkts;
1112
1113         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1114                 return 0;
1115
1116         adapter->real_hw.vc_event_msg_cb = ice_dcf_handle_pf_event_msg;
1117         if (ice_dcf_init_hw(eth_dev, &adapter->real_hw) != 0) {
1118                 PMD_INIT_LOG(ERR, "Failed to init DCF hardware");
1119                 return -1;
1120         }
1121
1122         if (ice_dcf_init_parent_adapter(eth_dev) != 0) {
1123                 PMD_INIT_LOG(ERR, "Failed to init DCF parent adapter");
1124                 ice_dcf_uninit_hw(eth_dev, &adapter->real_hw);
1125                 return -1;
1126         }
1127
1128         return 0;
1129 }
1130
1131 static int
1132 ice_dcf_dev_uninit(struct rte_eth_dev *eth_dev)
1133 {
1134         ice_dcf_dev_close(eth_dev);
1135
1136         return 0;
1137 }
1138
1139 static int
1140 ice_dcf_cap_check_handler(__rte_unused const char *key,
1141                           const char *value, __rte_unused void *opaque)
1142 {
1143         if (strcmp(value, "dcf"))
1144                 return -1;
1145
1146         return 0;
1147 }
1148
1149 static int
1150 ice_dcf_cap_selected(struct rte_devargs *devargs)
1151 {
1152         struct rte_kvargs *kvlist;
1153         const char *key = "cap";
1154         int ret = 0;
1155
1156         if (devargs == NULL)
1157                 return 0;
1158
1159         kvlist = rte_kvargs_parse(devargs->args, NULL);
1160         if (kvlist == NULL)
1161                 return 0;
1162
1163         if (!rte_kvargs_count(kvlist, key))
1164                 goto exit;
1165
1166         /* dcf capability selected when there's a key-value pair: cap=dcf */
1167         if (rte_kvargs_process(kvlist, key,
1168                                ice_dcf_cap_check_handler, NULL) < 0)
1169                 goto exit;
1170
1171         ret = 1;
1172
1173 exit:
1174         rte_kvargs_free(kvlist);
1175         return ret;
1176 }
1177
1178 static int
1179 eth_ice_dcf_pci_probe(__rte_unused struct rte_pci_driver *pci_drv,
1180                       struct rte_pci_device *pci_dev)
1181 {
1182         struct rte_eth_devargs eth_da = { .nb_representor_ports = 0 };
1183         struct ice_dcf_vf_repr_param repr_param;
1184         char repr_name[RTE_ETH_NAME_MAX_LEN];
1185         struct ice_dcf_adapter *dcf_adapter;
1186         struct rte_eth_dev *dcf_ethdev;
1187         uint16_t dcf_vsi_id;
1188         int i, ret;
1189
1190         if (!ice_dcf_cap_selected(pci_dev->device.devargs))
1191                 return 1;
1192
1193         ret = rte_eth_devargs_parse(pci_dev->device.devargs->args, &eth_da);
1194         if (ret)
1195                 return ret;
1196
1197         ret = rte_eth_dev_pci_generic_probe(pci_dev,
1198                                             sizeof(struct ice_dcf_adapter),
1199                                             ice_dcf_dev_init);
1200         if (ret || !eth_da.nb_representor_ports)
1201                 return ret;
1202         if (eth_da.type != RTE_ETH_REPRESENTOR_VF)
1203                 return -ENOTSUP;
1204
1205         dcf_ethdev = rte_eth_dev_allocated(pci_dev->device.name);
1206         if (dcf_ethdev == NULL)
1207                 return -ENODEV;
1208
1209         dcf_adapter = dcf_ethdev->data->dev_private;
1210         ret = ice_dcf_init_repr_info(dcf_adapter);
1211         if (ret)
1212                 return ret;
1213
1214         if (eth_da.nb_representor_ports > dcf_adapter->real_hw.num_vfs ||
1215             eth_da.nb_representor_ports >= RTE_MAX_ETHPORTS) {
1216                 PMD_DRV_LOG(ERR, "the number of port representors is too large: %u",
1217                             eth_da.nb_representor_ports);
1218                 ice_dcf_free_repr_info(dcf_adapter);
1219                 return -EINVAL;
1220         }
1221
1222         dcf_vsi_id = dcf_adapter->real_hw.vsi_id | VIRTCHNL_DCF_VF_VSI_VALID;
1223
1224         repr_param.dcf_eth_dev = dcf_ethdev;
1225         repr_param.switch_domain_id = 0;
1226
1227         for (i = 0; i < eth_da.nb_representor_ports; i++) {
1228                 uint16_t vf_id = eth_da.representor_ports[i];
1229                 struct rte_eth_dev *vf_rep_eth_dev;
1230
1231                 if (vf_id >= dcf_adapter->real_hw.num_vfs) {
1232                         PMD_DRV_LOG(ERR, "VF ID %u is out of range (0 ~ %u)",
1233                                     vf_id, dcf_adapter->real_hw.num_vfs - 1);
1234                         ret = -EINVAL;
1235                         break;
1236                 }
1237
1238                 if (dcf_adapter->real_hw.vf_vsi_map[vf_id] == dcf_vsi_id) {
1239                         PMD_DRV_LOG(ERR, "VF ID %u is DCF's ID.\n", vf_id);
1240                         ret = -EINVAL;
1241                         break;
1242                 }
1243
1244                 repr_param.vf_id = vf_id;
1245                 snprintf(repr_name, sizeof(repr_name), "net_%s_representor_%u",
1246                          pci_dev->device.name, vf_id);
1247                 ret = rte_eth_dev_create(&pci_dev->device, repr_name,
1248                                          sizeof(struct ice_dcf_vf_repr),
1249                                          NULL, NULL, ice_dcf_vf_repr_init,
1250                                          &repr_param);
1251                 if (ret) {
1252                         PMD_DRV_LOG(ERR, "failed to create DCF VF representor %s",
1253                                     repr_name);
1254                         break;
1255                 }
1256
1257                 vf_rep_eth_dev = rte_eth_dev_allocated(repr_name);
1258                 if (!vf_rep_eth_dev) {
1259                         PMD_DRV_LOG(ERR,
1260                                     "Failed to find the ethdev for DCF VF representor: %s",
1261                                     repr_name);
1262                         ret = -ENODEV;
1263                         break;
1264                 }
1265
1266                 dcf_adapter->repr_infos[vf_id].vf_rep_eth_dev = vf_rep_eth_dev;
1267                 dcf_adapter->num_reprs++;
1268         }
1269
1270         return ret;
1271 }
1272
1273 static int
1274 eth_ice_dcf_pci_remove(struct rte_pci_device *pci_dev)
1275 {
1276         struct rte_eth_dev *eth_dev;
1277
1278         eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
1279         if (!eth_dev)
1280                 return 0;
1281
1282         if (eth_dev->data->dev_flags & RTE_ETH_DEV_REPRESENTOR)
1283                 return rte_eth_dev_pci_generic_remove(pci_dev,
1284                                                       ice_dcf_vf_repr_uninit);
1285         else
1286                 return rte_eth_dev_pci_generic_remove(pci_dev,
1287                                                       ice_dcf_dev_uninit);
1288 }
1289
1290 static const struct rte_pci_id pci_id_ice_dcf_map[] = {
1291         { RTE_PCI_DEVICE(IAVF_INTEL_VENDOR_ID, IAVF_DEV_ID_ADAPTIVE_VF) },
1292         { .vendor_id = 0, /* sentinel */ },
1293 };
1294
1295 static struct rte_pci_driver rte_ice_dcf_pmd = {
1296         .id_table = pci_id_ice_dcf_map,
1297         .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
1298         .probe = eth_ice_dcf_pci_probe,
1299         .remove = eth_ice_dcf_pci_remove,
1300 };
1301
1302 RTE_PMD_REGISTER_PCI(net_ice_dcf, rte_ice_dcf_pmd);
1303 RTE_PMD_REGISTER_PCI_TABLE(net_ice_dcf, pci_id_ice_dcf_map);
1304 RTE_PMD_REGISTER_KMOD_DEP(net_ice_dcf, "* igb_uio | vfio-pci");
1305 RTE_PMD_REGISTER_PARAM_STRING(net_ice_dcf, "cap=dcf");