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/types.h>
   8 #include <sys/ioctl.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 <rte_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 uint16_t
  30 ice_dcf_recv_pkts(__rte_unused void *rx_queue,
  31                   __rte_unused struct rte_mbuf **bufs,
  32                   __rte_unused uint16_t nb_pkts)
  33 {
  34         return 0;
  35 }
  36
  37 static uint16_t
  38 ice_dcf_xmit_pkts(__rte_unused void *tx_queue,
  39                   __rte_unused struct rte_mbuf **bufs,
  40                   __rte_unused uint16_t nb_pkts)
  41 {
  42         return 0;
  43 }
  44
  45 static int
  46 ice_dcf_init_rxq(struct rte_eth_dev *dev, struct ice_rx_queue *rxq)
  47 {
  48         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
  49         struct rte_eth_dev_data *dev_data = dev->data;
  50         struct iavf_hw *hw = &dcf_ad->real_hw.avf;
  51         uint16_t buf_size, max_pkt_len, len;
  52
  53         buf_size = rte_pktmbuf_data_room_size(rxq->mp) - RTE_PKTMBUF_HEADROOM;
  54         rxq->rx_hdr_len = 0;
  55         rxq->rx_buf_len = RTE_ALIGN(buf_size, (1 << ICE_RLAN_CTX_DBUF_S));
  56         len = ICE_SUPPORT_CHAIN_NUM * rxq->rx_buf_len;
  57         max_pkt_len = RTE_MIN(len, dev->data->dev_conf.rxmode.max_rx_pkt_len);
  58
  59         /* Check if the jumbo frame and maximum packet length are set
  60          * correctly.
  61          */
  62         if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) {
  63                 if (max_pkt_len <= RTE_ETHER_MAX_LEN ||
  64                     max_pkt_len > ICE_FRAME_SIZE_MAX) {
  65                         PMD_DRV_LOG(ERR, "maximum packet length must be "
  66                                     "larger than %u and smaller than %u, "
  67                                     "as jumbo frame is enabled",
  68                                     (uint32_t)RTE_ETHER_MAX_LEN,
  69                                     (uint32_t)ICE_FRAME_SIZE_MAX);
  70                         return -EINVAL;
  71                 }
  72         } else {
  73                 if (max_pkt_len < RTE_ETHER_MIN_LEN ||
  74                     max_pkt_len > RTE_ETHER_MAX_LEN) {
  75                         PMD_DRV_LOG(ERR, "maximum packet length must be "
  76                                     "larger than %u and smaller than %u, "
  77                                     "as jumbo frame is disabled",
  78                                     (uint32_t)RTE_ETHER_MIN_LEN,
  79                                     (uint32_t)RTE_ETHER_MAX_LEN);
  80                         return -EINVAL;
  81                 }
  82         }
  83
  84         rxq->max_pkt_len = max_pkt_len;
  85         if ((dev_data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_SCATTER) ||
  86             (rxq->max_pkt_len + 2 * ICE_VLAN_TAG_SIZE) > buf_size) {
  87                 dev_data->scattered_rx = 1;
  88         }
  89         rxq->qrx_tail = hw->hw_addr + IAVF_QRX_TAIL1(rxq->queue_id);
  90         IAVF_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
  91         IAVF_WRITE_FLUSH(hw);
  92
  93         return 0;
  94 }
  95
  96 static int
  97 ice_dcf_init_rx_queues(struct rte_eth_dev *dev)
  98 {
  99         struct ice_rx_queue **rxq =
 100                 (struct ice_rx_queue **)dev->data->rx_queues;
 101         int i, ret;
 102
 103         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 104                 if (!rxq[i] || !rxq[i]->q_set)
 105                         continue;
 106                 ret = ice_dcf_init_rxq(dev, rxq[i]);
 107                 if (ret)
 108                         return ret;
 109         }
 110
 111         ice_set_rx_function(dev);
 112         ice_set_tx_function(dev);
 113
 114         return 0;
 115 }
 116
 117 #define IAVF_MISC_VEC_ID                RTE_INTR_VEC_ZERO_OFFSET
 118 #define IAVF_RX_VEC_START               RTE_INTR_VEC_RXTX_OFFSET
 119
 120 #define IAVF_ITR_INDEX_DEFAULT          0
 121 #define IAVF_QUEUE_ITR_INTERVAL_DEFAULT 32 /* 32 us */
 122 #define IAVF_QUEUE_ITR_INTERVAL_MAX     8160 /* 8160 us */
 123
 124 static inline uint16_t
 125 iavf_calc_itr_interval(int16_t interval)
 126 {
 127         if (interval < 0 || interval > IAVF_QUEUE_ITR_INTERVAL_MAX)
 128                 interval = IAVF_QUEUE_ITR_INTERVAL_DEFAULT;
 129
 130         /* Convert to hardware count, as writing each 1 represents 2 us */
 131         return interval / 2;
 132 }
 133
 134 static int
 135 ice_dcf_config_rx_queues_irqs(struct rte_eth_dev *dev,
 136                                      struct rte_intr_handle *intr_handle)
 137 {
 138         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 139         struct ice_dcf_hw *hw = &adapter->real_hw;
 140         uint16_t interval, i;
 141         int vec;
 142
 143         if (rte_intr_cap_multiple(intr_handle) &&
 144             dev->data->dev_conf.intr_conf.rxq) {
 145                 if (rte_intr_efd_enable(intr_handle, dev->data->nb_rx_queues))
 146                         return -1;
 147         }
 148
 149         if (rte_intr_dp_is_en(intr_handle) && !intr_handle->intr_vec) {
 150                 intr_handle->intr_vec =
 151                         rte_zmalloc("intr_vec",
 152                                     dev->data->nb_rx_queues * sizeof(int), 0);
 153                 if (!intr_handle->intr_vec) {
 154                         PMD_DRV_LOG(ERR, "Failed to allocate %d rx intr_vec",
 155                                     dev->data->nb_rx_queues);
 156                         return -1;
 157                 }
 158         }
 159
 160         if (!dev->data->dev_conf.intr_conf.rxq ||
 161             !rte_intr_dp_is_en(intr_handle)) {
 162                 /* Rx interrupt disabled, Map interrupt only for writeback */
 163                 hw->nb_msix = 1;
 164                 if (hw->vf_res->vf_cap_flags &
 165                     VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) {
 166                         /* If WB_ON_ITR supports, enable it */
 167                         hw->msix_base = IAVF_RX_VEC_START;
 168                         IAVF_WRITE_REG(&hw->avf,
 169                                        IAVF_VFINT_DYN_CTLN1(hw->msix_base - 1),
 170                                        IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK |
 171                                        IAVF_VFINT_DYN_CTLN1_WB_ON_ITR_MASK);
 172                 } else {
 173                         /* If no WB_ON_ITR offload flags, need to set
 174                          * interrupt for descriptor write back.
 175                          */
 176                         hw->msix_base = IAVF_MISC_VEC_ID;
 177
 178                         /* set ITR to max */
 179                         interval =
 180                         iavf_calc_itr_interval(IAVF_QUEUE_ITR_INTERVAL_MAX);
 181                         IAVF_WRITE_REG(&hw->avf, IAVF_VFINT_DYN_CTL01,
 182                                        IAVF_VFINT_DYN_CTL01_INTENA_MASK |
 183                                        (IAVF_ITR_INDEX_DEFAULT <<
 184                                         IAVF_VFINT_DYN_CTL01_ITR_INDX_SHIFT) |
 185                                        (interval <<
 186                                         IAVF_VFINT_DYN_CTL01_INTERVAL_SHIFT));
 187                 }
 188                 IAVF_WRITE_FLUSH(&hw->avf);
 189                 /* map all queues to the same interrupt */
 190                 for (i = 0; i < dev->data->nb_rx_queues; i++)
 191                         hw->rxq_map[hw->msix_base] |= 1 << i;
 192         } else {
 193                 if (!rte_intr_allow_others(intr_handle)) {
 194                         hw->nb_msix = 1;
 195                         hw->msix_base = IAVF_MISC_VEC_ID;
 196                         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 197                                 hw->rxq_map[hw->msix_base] |= 1 << i;
 198                                 intr_handle->intr_vec[i] = IAVF_MISC_VEC_ID;
 199                         }
 200                         PMD_DRV_LOG(DEBUG,
 201                                     "vector %u are mapping to all Rx queues",
 202                                     hw->msix_base);
 203                 } else {
 204                         /* If Rx interrupt is reuquired, and we can use
 205                          * multi interrupts, then the vec is from 1
 206                          */
 207                         hw->nb_msix = RTE_MIN(hw->vf_res->max_vectors,
 208                                               intr_handle->nb_efd);
 209                         hw->msix_base = IAVF_MISC_VEC_ID;
 210                         vec = IAVF_MISC_VEC_ID;
 211                         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 212                                 hw->rxq_map[vec] |= 1 << i;
 213                                 intr_handle->intr_vec[i] = vec++;
 214                                 if (vec >= hw->nb_msix)
 215                                         vec = IAVF_RX_VEC_START;
 216                         }
 217                         PMD_DRV_LOG(DEBUG,
 218                                     "%u vectors are mapping to %u Rx queues",
 219                                     hw->nb_msix, dev->data->nb_rx_queues);
 220                 }
 221         }
 222
 223         if (ice_dcf_config_irq_map(hw)) {
 224                 PMD_DRV_LOG(ERR, "config interrupt mapping failed");
 225                 return -1;
 226         }
 227         return 0;
 228 }
 229
 230 static int
 231 alloc_rxq_mbufs(struct ice_rx_queue *rxq)
 232 {
 233         volatile union ice_32b_rx_flex_desc *rxd;
 234         struct rte_mbuf *mbuf = NULL;
 235         uint64_t dma_addr;
 236         uint16_t i;
 237
 238         for (i = 0; i < rxq->nb_rx_desc; i++) {
 239                 mbuf = rte_mbuf_raw_alloc(rxq->mp);
 240                 if (unlikely(!mbuf)) {
 241                         PMD_DRV_LOG(ERR, "Failed to allocate mbuf for RX");
 242                         return -ENOMEM;
 243                 }
 244
 245                 rte_mbuf_refcnt_set(mbuf, 1);
 246                 mbuf->next = NULL;
 247                 mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 248                 mbuf->nb_segs = 1;
 249                 mbuf->port = rxq->port_id;
 250
 251                 dma_addr =
 252                         rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
 253
 254                 rxd = &rxq->rx_ring[i];
 255                 rxd->read.pkt_addr = dma_addr;
 256                 rxd->read.hdr_addr = 0;
 257                 rxd->read.rsvd1 = 0;
 258                 rxd->read.rsvd2 = 0;
 259
 260                 rxq->sw_ring[i].mbuf = (void *)mbuf;
 261         }
 262
 263         return 0;
 264 }
 265
 266 static int
 267 ice_dcf_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 268 {
 269         struct ice_dcf_adapter *ad = dev->data->dev_private;
 270         struct iavf_hw *hw = &ad->real_hw.avf;
 271         struct ice_rx_queue *rxq;
 272         int err = 0;
 273
 274         if (rx_queue_id >= dev->data->nb_rx_queues)
 275                 return -EINVAL;
 276
 277         rxq = dev->data->rx_queues[rx_queue_id];
 278
 279         err = alloc_rxq_mbufs(rxq);
 280         if (err) {
 281                 PMD_DRV_LOG(ERR, "Failed to allocate RX queue mbuf");
 282                 return err;
 283         }
 284
 285         rte_wmb();
 286
 287         /* Init the RX tail register. */
 288         IAVF_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1);
 289         IAVF_WRITE_FLUSH(hw);
 290
 291         /* Ready to switch the queue on */
 292         err = ice_dcf_switch_queue(&ad->real_hw, rx_queue_id, true, true);
 293         if (err) {
 294                 PMD_DRV_LOG(ERR, "Failed to switch RX queue %u on",
 295                             rx_queue_id);
 296                 return err;
 297         }
 298
 299         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 300
 301         return 0;
 302 }
 303
 304 static inline void
 305 reset_rx_queue(struct ice_rx_queue *rxq)
 306 {
 307         uint16_t len;
 308         uint32_t i;
 309
 310         if (!rxq)
 311                 return;
 312
 313         len = rxq->nb_rx_desc + ICE_RX_MAX_BURST;
 314
 315         for (i = 0; i < len * sizeof(union ice_rx_flex_desc); i++)
 316                 ((volatile char *)rxq->rx_ring)[i] = 0;
 317
 318         memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf));
 319
 320         for (i = 0; i < ICE_RX_MAX_BURST; i++)
 321                 rxq->sw_ring[rxq->nb_rx_desc + i].mbuf = &rxq->fake_mbuf;
 322
 323         /* for rx bulk */
 324         rxq->rx_nb_avail = 0;
 325         rxq->rx_next_avail = 0;
 326         rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
 327
 328         rxq->rx_tail = 0;
 329         rxq->nb_rx_hold = 0;
 330         rxq->pkt_first_seg = NULL;
 331         rxq->pkt_last_seg = NULL;
 332 }
 333
 334 static inline void
 335 reset_tx_queue(struct ice_tx_queue *txq)
 336 {
 337         struct ice_tx_entry *txe;
 338         uint32_t i, size;
 339         uint16_t prev;
 340
 341         if (!txq) {
 342                 PMD_DRV_LOG(DEBUG, "Pointer to txq is NULL");
 343                 return;
 344         }
 345
 346         txe = txq->sw_ring;
 347         size = sizeof(struct ice_tx_desc) * txq->nb_tx_desc;
 348         for (i = 0; i < size; i++)
 349                 ((volatile char *)txq->tx_ring)[i] = 0;
 350
 351         prev = (uint16_t)(txq->nb_tx_desc - 1);
 352         for (i = 0; i < txq->nb_tx_desc; i++) {
 353                 txq->tx_ring[i].cmd_type_offset_bsz =
 354                         rte_cpu_to_le_64(IAVF_TX_DESC_DTYPE_DESC_DONE);
 355                 txe[i].mbuf =  NULL;
 356                 txe[i].last_id = i;
 357                 txe[prev].next_id = i;
 358                 prev = i;
 359         }
 360
 361         txq->tx_tail = 0;
 362         txq->nb_tx_used = 0;
 363
 364         txq->last_desc_cleaned = txq->nb_tx_desc - 1;
 365         txq->nb_tx_free = txq->nb_tx_desc - 1;
 366
 367         txq->tx_next_dd = txq->tx_rs_thresh - 1;
 368         txq->tx_next_rs = txq->tx_rs_thresh - 1;
 369 }
 370
 371 static int
 372 ice_dcf_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 373 {
 374         struct ice_dcf_adapter *ad = dev->data->dev_private;
 375         struct ice_dcf_hw *hw = &ad->real_hw;
 376         struct ice_rx_queue *rxq;
 377         int err;
 378
 379         if (rx_queue_id >= dev->data->nb_rx_queues)
 380                 return -EINVAL;
 381
 382         err = ice_dcf_switch_queue(hw, rx_queue_id, true, false);
 383         if (err) {
 384                 PMD_DRV_LOG(ERR, "Failed to switch RX queue %u off",
 385                             rx_queue_id);
 386                 return err;
 387         }
 388
 389         rxq = dev->data->rx_queues[rx_queue_id];
 390         rxq->rx_rel_mbufs(rxq);
 391         reset_rx_queue(rxq);
 392         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 393
 394         return 0;
 395 }
 396
 397 static int
 398 ice_dcf_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 399 {
 400         struct ice_dcf_adapter *ad = dev->data->dev_private;
 401         struct iavf_hw *hw = &ad->real_hw.avf;
 402         struct ice_tx_queue *txq;
 403         int err = 0;
 404
 405         if (tx_queue_id >= dev->data->nb_tx_queues)
 406                 return -EINVAL;
 407
 408         txq = dev->data->tx_queues[tx_queue_id];
 409
 410         /* Init the RX tail register. */
 411         txq->qtx_tail = hw->hw_addr + IAVF_QTX_TAIL1(tx_queue_id);
 412         IAVF_PCI_REG_WRITE(txq->qtx_tail, 0);
 413         IAVF_WRITE_FLUSH(hw);
 414
 415         /* Ready to switch the queue on */
 416         err = ice_dcf_switch_queue(&ad->real_hw, tx_queue_id, false, true);
 417
 418         if (err) {
 419                 PMD_DRV_LOG(ERR, "Failed to switch TX queue %u on",
 420                             tx_queue_id);
 421                 return err;
 422         }
 423
 424         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 425
 426         return 0;
 427 }
 428
 429 static int
 430 ice_dcf_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 431 {
 432         struct ice_dcf_adapter *ad = dev->data->dev_private;
 433         struct ice_dcf_hw *hw = &ad->real_hw;
 434         struct ice_tx_queue *txq;
 435         int err;
 436
 437         if (tx_queue_id >= dev->data->nb_tx_queues)
 438                 return -EINVAL;
 439
 440         err = ice_dcf_switch_queue(hw, tx_queue_id, false, false);
 441         if (err) {
 442                 PMD_DRV_LOG(ERR, "Failed to switch TX queue %u off",
 443                             tx_queue_id);
 444                 return err;
 445         }
 446
 447         txq = dev->data->tx_queues[tx_queue_id];
 448         txq->tx_rel_mbufs(txq);
 449         reset_tx_queue(txq);
 450         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 451
 452         return 0;
 453 }
 454
 455 static int
 456 ice_dcf_start_queues(struct rte_eth_dev *dev)
 457 {
 458         struct ice_rx_queue *rxq;
 459         struct ice_tx_queue *txq;
 460         int nb_rxq = 0;
 461         int nb_txq, i;
 462
 463         for (nb_txq = 0; nb_txq < dev->data->nb_tx_queues; nb_txq++) {
 464                 txq = dev->data->tx_queues[nb_txq];
 465                 if (txq->tx_deferred_start)
 466                         continue;
 467                 if (ice_dcf_tx_queue_start(dev, nb_txq) != 0) {
 468                         PMD_DRV_LOG(ERR, "Fail to start queue %u", nb_txq);
 469                         goto tx_err;
 470                 }
 471         }
 472
 473         for (nb_rxq = 0; nb_rxq < dev->data->nb_rx_queues; nb_rxq++) {
 474                 rxq = dev->data->rx_queues[nb_rxq];
 475                 if (rxq->rx_deferred_start)
 476                         continue;
 477                 if (ice_dcf_rx_queue_start(dev, nb_rxq) != 0) {
 478                         PMD_DRV_LOG(ERR, "Fail to start queue %u", nb_rxq);
 479                         goto rx_err;
 480                 }
 481         }
 482
 483         return 0;
 484
 485         /* stop the started queues if failed to start all queues */
 486 rx_err:
 487         for (i = 0; i < nb_rxq; i++)
 488                 ice_dcf_rx_queue_stop(dev, i);
 489 tx_err:
 490         for (i = 0; i < nb_txq; i++)
 491                 ice_dcf_tx_queue_stop(dev, i);
 492
 493         return -1;
 494 }
 495
 496 static int
 497 ice_dcf_dev_start(struct rte_eth_dev *dev)
 498 {
 499         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
 500         struct rte_intr_handle *intr_handle = dev->intr_handle;
 501         struct ice_adapter *ad = &dcf_ad->parent;
 502         struct ice_dcf_hw *hw = &dcf_ad->real_hw;
 503         int ret;
 504
 505         ad->pf.adapter_stopped = 0;
 506
 507         hw->num_queue_pairs = RTE_MAX(dev->data->nb_rx_queues,
 508                                       dev->data->nb_tx_queues);
 509
 510         ret = ice_dcf_init_rx_queues(dev);
 511         if (ret) {
 512                 PMD_DRV_LOG(ERR, "Fail to init queues");
 513                 return ret;
 514         }
 515
 516         if (hw->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
 517                 ret = ice_dcf_init_rss(hw);
 518                 if (ret) {
 519                         PMD_DRV_LOG(ERR, "Failed to configure RSS");
 520                         return ret;
 521                 }
 522         }
 523
 524         ret = ice_dcf_configure_queues(hw);
 525         if (ret) {
 526                 PMD_DRV_LOG(ERR, "Fail to config queues");
 527                 return ret;
 528         }
 529
 530         ret = ice_dcf_config_rx_queues_irqs(dev, intr_handle);
 531         if (ret) {
 532                 PMD_DRV_LOG(ERR, "Fail to config rx queues' irqs");
 533                 return ret;
 534         }
 535
 536         if (dev->data->dev_conf.intr_conf.rxq != 0) {
 537                 rte_intr_disable(intr_handle);
 538                 rte_intr_enable(intr_handle);
 539         }
 540
 541         ret = ice_dcf_start_queues(dev);
 542         if (ret) {
 543                 PMD_DRV_LOG(ERR, "Failed to enable queues");
 544                 return ret;
 545         }
 546
 547         dev->data->dev_link.link_status = ETH_LINK_UP;
 548
 549         return 0;
 550 }
 551
 552 static void
 553 ice_dcf_stop_queues(struct rte_eth_dev *dev)
 554 {
 555         struct ice_dcf_adapter *ad = dev->data->dev_private;
 556         struct ice_dcf_hw *hw = &ad->real_hw;
 557         struct ice_rx_queue *rxq;
 558         struct ice_tx_queue *txq;
 559         int ret, i;
 560
 561         /* Stop All queues */
 562         ret = ice_dcf_disable_queues(hw);
 563         if (ret)
 564                 PMD_DRV_LOG(WARNING, "Fail to stop queues");
 565
 566         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 567                 txq = dev->data->tx_queues[i];
 568                 if (!txq)
 569                         continue;
 570                 txq->tx_rel_mbufs(txq);
 571                 reset_tx_queue(txq);
 572                 dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
 573         }
 574         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 575                 rxq = dev->data->rx_queues[i];
 576                 if (!rxq)
 577                         continue;
 578                 rxq->rx_rel_mbufs(rxq);
 579                 reset_rx_queue(rxq);
 580                 dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
 581         }
 582 }
 583
 584 static void
 585 ice_dcf_dev_stop(struct rte_eth_dev *dev)
 586 {
 587         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
 588         struct rte_intr_handle *intr_handle = dev->intr_handle;
 589         struct ice_adapter *ad = &dcf_ad->parent;
 590
 591         if (ad->pf.adapter_stopped == 1) {
 592                 PMD_DRV_LOG(DEBUG, "Port is already stopped");
 593                 return;
 594         }
 595
 596         ice_dcf_stop_queues(dev);
 597
 598         rte_intr_efd_disable(intr_handle);
 599         if (intr_handle->intr_vec) {
 600                 rte_free(intr_handle->intr_vec);
 601                 intr_handle->intr_vec = NULL;
 602         }
 603
 604         dev->data->dev_link.link_status = ETH_LINK_DOWN;
 605         ad->pf.adapter_stopped = 1;
 606 }
 607
 608 static int
 609 ice_dcf_dev_configure(struct rte_eth_dev *dev)
 610 {
 611         struct ice_dcf_adapter *dcf_ad = dev->data->dev_private;
 612         struct ice_adapter *ad = &dcf_ad->parent;
 613
 614         ad->rx_bulk_alloc_allowed = true;
 615         ad->tx_simple_allowed = true;
 616
 617         if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
 618                 dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
 619
 620         return 0;
 621 }
 622
 623 static int
 624 ice_dcf_dev_info_get(struct rte_eth_dev *dev,
 625                      struct rte_eth_dev_info *dev_info)
 626 {
 627         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 628         struct ice_dcf_hw *hw = &adapter->real_hw;
 629
 630         dev_info->max_mac_addrs = 1;
 631         dev_info->max_rx_queues = hw->vsi_res->num_queue_pairs;
 632         dev_info->max_tx_queues = hw->vsi_res->num_queue_pairs;
 633         dev_info->min_rx_bufsize = ICE_BUF_SIZE_MIN;
 634         dev_info->max_rx_pktlen = ICE_FRAME_SIZE_MAX;
 635         dev_info->hash_key_size = hw->vf_res->rss_key_size;
 636         dev_info->reta_size = hw->vf_res->rss_lut_size;
 637         dev_info->flow_type_rss_offloads = ICE_RSS_OFFLOAD_ALL;
 638
 639         dev_info->rx_offload_capa =
 640                 DEV_RX_OFFLOAD_VLAN_STRIP |
 641                 DEV_RX_OFFLOAD_IPV4_CKSUM |
 642                 DEV_RX_OFFLOAD_UDP_CKSUM |
 643                 DEV_RX_OFFLOAD_TCP_CKSUM |
 644                 DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
 645                 DEV_RX_OFFLOAD_SCATTER |
 646                 DEV_RX_OFFLOAD_JUMBO_FRAME |
 647                 DEV_RX_OFFLOAD_VLAN_FILTER |
 648                 DEV_RX_OFFLOAD_RSS_HASH;
 649         dev_info->tx_offload_capa =
 650                 DEV_TX_OFFLOAD_VLAN_INSERT |
 651                 DEV_TX_OFFLOAD_IPV4_CKSUM |
 652                 DEV_TX_OFFLOAD_UDP_CKSUM |
 653                 DEV_TX_OFFLOAD_TCP_CKSUM |
 654                 DEV_TX_OFFLOAD_SCTP_CKSUM |
 655                 DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
 656                 DEV_TX_OFFLOAD_TCP_TSO |
 657                 DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
 658                 DEV_TX_OFFLOAD_GRE_TNL_TSO |
 659                 DEV_TX_OFFLOAD_IPIP_TNL_TSO |
 660                 DEV_TX_OFFLOAD_GENEVE_TNL_TSO |
 661                 DEV_TX_OFFLOAD_MULTI_SEGS;
 662
 663         dev_info->default_rxconf = (struct rte_eth_rxconf) {
 664                 .rx_thresh = {
 665                         .pthresh = ICE_DEFAULT_RX_PTHRESH,
 666                         .hthresh = ICE_DEFAULT_RX_HTHRESH,
 667                         .wthresh = ICE_DEFAULT_RX_WTHRESH,
 668                 },
 669                 .rx_free_thresh = ICE_DEFAULT_RX_FREE_THRESH,
 670                 .rx_drop_en = 0,
 671                 .offloads = 0,
 672         };
 673
 674         dev_info->default_txconf = (struct rte_eth_txconf) {
 675                 .tx_thresh = {
 676                         .pthresh = ICE_DEFAULT_TX_PTHRESH,
 677                         .hthresh = ICE_DEFAULT_TX_HTHRESH,
 678                         .wthresh = ICE_DEFAULT_TX_WTHRESH,
 679                 },
 680                 .tx_free_thresh = ICE_DEFAULT_TX_FREE_THRESH,
 681                 .tx_rs_thresh = ICE_DEFAULT_TX_RSBIT_THRESH,
 682                 .offloads = 0,
 683         };
 684
 685         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
 686                 .nb_max = ICE_MAX_RING_DESC,
 687                 .nb_min = ICE_MIN_RING_DESC,
 688                 .nb_align = ICE_ALIGN_RING_DESC,
 689         };
 690
 691         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
 692                 .nb_max = ICE_MAX_RING_DESC,
 693                 .nb_min = ICE_MIN_RING_DESC,
 694                 .nb_align = ICE_ALIGN_RING_DESC,
 695         };
 696
 697         return 0;
 698 }
 699
 700 static int
 701 ice_dcf_dev_promiscuous_enable(__rte_unused struct rte_eth_dev *dev)
 702 {
 703         return 0;
 704 }
 705
 706 static int
 707 ice_dcf_dev_promiscuous_disable(__rte_unused struct rte_eth_dev *dev)
 708 {
 709         return 0;
 710 }
 711
 712 static int
 713 ice_dcf_dev_allmulticast_enable(__rte_unused struct rte_eth_dev *dev)
 714 {
 715         return 0;
 716 }
 717
 718 static int
 719 ice_dcf_dev_allmulticast_disable(__rte_unused struct rte_eth_dev *dev)
 720 {
 721         return 0;
 722 }
 723
 724 static int
 725 ice_dcf_dev_filter_ctrl(struct rte_eth_dev *dev,
 726                         enum rte_filter_type filter_type,
 727                         enum rte_filter_op filter_op,
 728                         void *arg)
 729 {
 730         int ret = 0;
 731
 732         if (!dev)
 733                 return -EINVAL;
 734
 735         switch (filter_type) {
 736         case RTE_ETH_FILTER_GENERIC:
 737                 if (filter_op != RTE_ETH_FILTER_GET)
 738                         return -EINVAL;
 739                 *(const void **)arg = &ice_flow_ops;
 740                 break;
 741
 742         default:
 743                 PMD_DRV_LOG(WARNING, "Filter type (%d) not supported",
 744                             filter_type);
 745                 ret = -EINVAL;
 746                 break;
 747         }
 748
 749         return ret;
 750 }
 751
 752 #define ICE_DCF_32_BIT_WIDTH (CHAR_BIT * 4)
 753 #define ICE_DCF_48_BIT_WIDTH (CHAR_BIT * 6)
 754 #define ICE_DCF_48_BIT_MASK  RTE_LEN2MASK(ICE_DCF_48_BIT_WIDTH, uint64_t)
 755
 756 static void
 757 ice_dcf_stat_update_48(uint64_t *offset, uint64_t *stat)
 758 {
 759         if (*stat >= *offset)
 760                 *stat = *stat - *offset;
 761         else
 762                 *stat = (uint64_t)((*stat +
 763                         ((uint64_t)1 << ICE_DCF_48_BIT_WIDTH)) - *offset);
 764
 765         *stat &= ICE_DCF_48_BIT_MASK;
 766 }
 767
 768 static void
 769 ice_dcf_stat_update_32(uint64_t *offset, uint64_t *stat)
 770 {
 771         if (*stat >= *offset)
 772                 *stat = (uint64_t)(*stat - *offset);
 773         else
 774                 *stat = (uint64_t)((*stat +
 775                         ((uint64_t)1 << ICE_DCF_32_BIT_WIDTH)) - *offset);
 776 }
 777
 778 static void
 779 ice_dcf_update_stats(struct virtchnl_eth_stats *oes,
 780                      struct virtchnl_eth_stats *nes)
 781 {
 782         ice_dcf_stat_update_48(&oes->rx_bytes, &nes->rx_bytes);
 783         ice_dcf_stat_update_48(&oes->rx_unicast, &nes->rx_unicast);
 784         ice_dcf_stat_update_48(&oes->rx_multicast, &nes->rx_multicast);
 785         ice_dcf_stat_update_48(&oes->rx_broadcast, &nes->rx_broadcast);
 786         ice_dcf_stat_update_32(&oes->rx_discards, &nes->rx_discards);
 787         ice_dcf_stat_update_48(&oes->tx_bytes, &nes->tx_bytes);
 788         ice_dcf_stat_update_48(&oes->tx_unicast, &nes->tx_unicast);
 789         ice_dcf_stat_update_48(&oes->tx_multicast, &nes->tx_multicast);
 790         ice_dcf_stat_update_48(&oes->tx_broadcast, &nes->tx_broadcast);
 791         ice_dcf_stat_update_32(&oes->tx_errors, &nes->tx_errors);
 792         ice_dcf_stat_update_32(&oes->tx_discards, &nes->tx_discards);
 793 }
 794
 795
 796 static int
 797 ice_dcf_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 798 {
 799         struct ice_dcf_adapter *ad = dev->data->dev_private;
 800         struct ice_dcf_hw *hw = &ad->real_hw;
 801         struct virtchnl_eth_stats pstats;
 802         int ret;
 803
 804         ret = ice_dcf_query_stats(hw, &pstats);
 805         if (ret == 0) {
 806                 ice_dcf_update_stats(&hw->eth_stats_offset, &pstats);
 807                 stats->ipackets = pstats.rx_unicast + pstats.rx_multicast +
 808                                 pstats.rx_broadcast - pstats.rx_discards;
 809                 stats->opackets = pstats.tx_broadcast + pstats.tx_multicast +
 810                                                 pstats.tx_unicast;
 811                 stats->imissed = pstats.rx_discards;
 812                 stats->oerrors = pstats.tx_errors + pstats.tx_discards;
 813                 stats->ibytes = pstats.rx_bytes;
 814                 stats->ibytes -= stats->ipackets * RTE_ETHER_CRC_LEN;
 815                 stats->obytes = pstats.tx_bytes;
 816         } else {
 817                 PMD_DRV_LOG(ERR, "Get statistics failed");
 818         }
 819         return ret;
 820 }
 821
 822 static int
 823 ice_dcf_stats_reset(struct rte_eth_dev *dev)
 824 {
 825         struct ice_dcf_adapter *ad = dev->data->dev_private;
 826         struct ice_dcf_hw *hw = &ad->real_hw;
 827         struct virtchnl_eth_stats pstats;
 828         int ret;
 829
 830         /* read stat values to clear hardware registers */
 831         ret = ice_dcf_query_stats(hw, &pstats);
 832         if (ret != 0)
 833                 return ret;
 834
 835         /* set stats offset base on current values */
 836         hw->eth_stats_offset = pstats;
 837
 838         return 0;
 839 }
 840
 841 static void
 842 ice_dcf_dev_close(struct rte_eth_dev *dev)
 843 {
 844         struct ice_dcf_adapter *adapter = dev->data->dev_private;
 845
 846         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 847                 return;
 848
 849         dev->dev_ops = NULL;
 850         dev->rx_pkt_burst = NULL;
 851         dev->tx_pkt_burst = NULL;
 852
 853         ice_dcf_uninit_parent_adapter(dev);
 854         ice_dcf_uninit_hw(dev, &adapter->real_hw);
 855 }
 856
 857 static int
 858 ice_dcf_link_update(__rte_unused struct rte_eth_dev *dev,
 859                     __rte_unused int wait_to_complete)
 860 {
 861         return 0;
 862 }
 863
 864 static const struct eth_dev_ops ice_dcf_eth_dev_ops = {
 865         .dev_start               = ice_dcf_dev_start,
 866         .dev_stop                = ice_dcf_dev_stop,
 867         .dev_close               = ice_dcf_dev_close,
 868         .dev_configure           = ice_dcf_dev_configure,
 869         .dev_infos_get           = ice_dcf_dev_info_get,
 870         .rx_queue_setup          = ice_rx_queue_setup,
 871         .tx_queue_setup          = ice_tx_queue_setup,
 872         .rx_queue_release        = ice_rx_queue_release,
 873         .tx_queue_release        = ice_tx_queue_release,
 874         .rx_queue_start          = ice_dcf_rx_queue_start,
 875         .tx_queue_start          = ice_dcf_tx_queue_start,
 876         .rx_queue_stop           = ice_dcf_rx_queue_stop,
 877         .tx_queue_stop           = ice_dcf_tx_queue_stop,
 878         .link_update             = ice_dcf_link_update,
 879         .stats_get               = ice_dcf_stats_get,
 880         .stats_reset             = ice_dcf_stats_reset,
 881         .promiscuous_enable      = ice_dcf_dev_promiscuous_enable,
 882         .promiscuous_disable     = ice_dcf_dev_promiscuous_disable,
 883         .allmulticast_enable     = ice_dcf_dev_allmulticast_enable,
 884         .allmulticast_disable    = ice_dcf_dev_allmulticast_disable,
 885         .filter_ctrl             = ice_dcf_dev_filter_ctrl,
 886 };
 887
 888 static int
 889 ice_dcf_dev_init(struct rte_eth_dev *eth_dev)
 890 {
 891         struct ice_dcf_adapter *adapter = eth_dev->data->dev_private;
 892
 893         eth_dev->dev_ops = &ice_dcf_eth_dev_ops;
 894         eth_dev->rx_pkt_burst = ice_dcf_recv_pkts;
 895         eth_dev->tx_pkt_burst = ice_dcf_xmit_pkts;
 896
 897         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 898                 return 0;
 899
 900         eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
 901
 902         adapter->real_hw.vc_event_msg_cb = ice_dcf_handle_pf_event_msg;
 903         if (ice_dcf_init_hw(eth_dev, &adapter->real_hw) != 0) {
 904                 PMD_INIT_LOG(ERR, "Failed to init DCF hardware");
 905                 return -1;
 906         }
 907
 908         if (ice_dcf_init_parent_adapter(eth_dev) != 0) {
 909                 PMD_INIT_LOG(ERR, "Failed to init DCF parent adapter");
 910                 ice_dcf_uninit_hw(eth_dev, &adapter->real_hw);
 911                 return -1;
 912         }
 913
 914         return 0;
 915 }
 916
 917 static int
 918 ice_dcf_dev_uninit(struct rte_eth_dev *eth_dev)
 919 {
 920         ice_dcf_dev_close(eth_dev);
 921
 922         return 0;
 923 }
 924
 925 static int
 926 ice_dcf_cap_check_handler(__rte_unused const char *key,
 927                           const char *value, __rte_unused void *opaque)
 928 {
 929         if (strcmp(value, "dcf"))
 930                 return -1;
 931
 932         return 0;
 933 }
 934
 935 static int
 936 ice_dcf_cap_selected(struct rte_devargs *devargs)
 937 {
 938         struct rte_kvargs *kvlist;
 939         const char *key = "cap";
 940         int ret = 0;
 941
 942         if (devargs == NULL)
 943                 return 0;
 944
 945         kvlist = rte_kvargs_parse(devargs->args, NULL);
 946         if (kvlist == NULL)
 947                 return 0;
 948
 949         if (!rte_kvargs_count(kvlist, key))
 950                 goto exit;
 951
 952         /* dcf capability selected when there's a key-value pair: cap=dcf */
 953         if (rte_kvargs_process(kvlist, key,
 954                                ice_dcf_cap_check_handler, NULL) < 0)
 955                 goto exit;
 956
 957         ret = 1;
 958
 959 exit:
 960         rte_kvargs_free(kvlist);
 961         return ret;
 962 }
 963
 964 static int eth_ice_dcf_pci_probe(__rte_unused struct rte_pci_driver *pci_drv,
 965                              struct rte_pci_device *pci_dev)
 966 {
 967         if (!ice_dcf_cap_selected(pci_dev->device.devargs))
 968                 return 1;
 969
 970         return rte_eth_dev_pci_generic_probe(pci_dev,
 971                                              sizeof(struct ice_dcf_adapter),
 972                                              ice_dcf_dev_init);
 973 }
 974
 975 static int eth_ice_dcf_pci_remove(struct rte_pci_device *pci_dev)
 976 {
 977         return rte_eth_dev_pci_generic_remove(pci_dev, ice_dcf_dev_uninit);
 978 }
 979
 980 static const struct rte_pci_id pci_id_ice_dcf_map[] = {
 981         { RTE_PCI_DEVICE(IAVF_INTEL_VENDOR_ID, IAVF_DEV_ID_ADAPTIVE_VF) },
 982         { .vendor_id = 0, /* sentinel */ },
 983 };
 984
 985 static struct rte_pci_driver rte_ice_dcf_pmd = {
 986         .id_table = pci_id_ice_dcf_map,
 987         .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 988         .probe = eth_ice_dcf_pci_probe,
 989         .remove = eth_ice_dcf_pci_remove,
 990 };
 991
 992 RTE_PMD_REGISTER_PCI(net_ice_dcf, rte_ice_dcf_pmd);
 993 RTE_PMD_REGISTER_PCI_TABLE(net_ice_dcf, pci_id_ice_dcf_map);
 994 RTE_PMD_REGISTER_KMOD_DEP(net_ice_dcf, "* igb_uio | vfio-pci");
 995 RTE_PMD_REGISTER_PARAM_STRING(net_ice_dcf, "cap=dcf");