drivers/net/szedata2/rte_eth_szedata2.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015 - 2016 CESNET
   3  */
   4
   5 #include <stdint.h>
   6 #include <unistd.h>
   7 #include <stdbool.h>
   8 #include <err.h>
   9 #include <sys/types.h>
  10 #include <dirent.h>
  11 #include <sys/stat.h>
  12 #include <fcntl.h>
  13 #include <sys/mman.h>
  14
  15 #include <libsze2.h>
  16
  17 #include <rte_mbuf.h>
  18 #include <rte_ethdev_driver.h>
  19 #include <rte_ethdev_pci.h>
  20 #include <rte_malloc.h>
  21 #include <rte_memcpy.h>
  22 #include <rte_kvargs.h>
  23 #include <rte_dev.h>
  24
  25 #include "rte_eth_szedata2.h"
  26 #include "szedata2_logs.h"
  27
  28 #define RTE_ETH_SZEDATA2_MAX_RX_QUEUES 32
  29 #define RTE_ETH_SZEDATA2_MAX_TX_QUEUES 32
  30 #define RTE_ETH_SZEDATA2_TX_LOCK_SIZE (32 * 1024 * 1024)
  31
  32 /**
  33  * size of szedata2_packet header with alignment
  34  */
  35 #define RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED 8
  36
  37 #define RTE_SZEDATA2_DRIVER_NAME net_szedata2
  38
  39 #define SZEDATA2_DEV_PATH_FMT "/dev/szedataII%u"
  40
  41 /**
  42  * Format string for suffix used to differentiate between Ethernet ports
  43  * on the same PCI device.
  44  */
  45 #define SZEDATA2_ETH_DEV_NAME_SUFFIX_FMT "-port%u"
  46
  47 /**
  48  * Maximum number of ports for one device.
  49  */
  50 #define SZEDATA2_MAX_PORTS 2
  51
  52 /**
  53  * Entry in list of PCI devices for this driver.
  54  */
  55 struct pci_dev_list_entry;
  56 struct pci_dev_list_entry {
  57         LIST_ENTRY(pci_dev_list_entry) next;
  58         struct rte_pci_device *pci_dev;
  59         unsigned int port_count;
  60 };
  61
  62 /* List of PCI devices with number of ports for this driver. */
  63 LIST_HEAD(pci_dev_list, pci_dev_list_entry) szedata2_pci_dev_list =
  64         LIST_HEAD_INITIALIZER(szedata2_pci_dev_list);
  65
  66 struct port_info {
  67         unsigned int rx_base_id;
  68         unsigned int tx_base_id;
  69         unsigned int rx_count;
  70         unsigned int tx_count;
  71         int numa_node;
  72 };
  73
  74 struct pmd_internals {
  75         struct rte_eth_dev *dev;
  76         uint16_t max_rx_queues;
  77         uint16_t max_tx_queues;
  78         unsigned int rxq_base_id;
  79         unsigned int txq_base_id;
  80         char *sze_dev_path;
  81 };
  82
  83 struct szedata2_rx_queue {
  84         struct pmd_internals *priv;
  85         struct szedata *sze;
  86         uint8_t rx_channel;
  87         uint16_t qid;
  88         uint16_t in_port;
  89         struct rte_mempool *mb_pool;
  90         volatile uint64_t rx_pkts;
  91         volatile uint64_t rx_bytes;
  92         volatile uint64_t err_pkts;
  93 };
  94
  95 struct szedata2_tx_queue {
  96         struct pmd_internals *priv;
  97         struct szedata *sze;
  98         uint8_t tx_channel;
  99         uint16_t qid;
 100         volatile uint64_t tx_pkts;
 101         volatile uint64_t tx_bytes;
 102         volatile uint64_t err_pkts;
 103 };
 104
 105 int szedata2_logtype_init;
 106 int szedata2_logtype_driver;
 107
 108 static struct rte_ether_addr eth_addr = {
 109         .addr_bytes = { 0x00, 0x11, 0x17, 0x00, 0x00, 0x00 }
 110 };
 111
 112 static uint16_t
 113 eth_szedata2_rx(void *queue,
 114                 struct rte_mbuf **bufs,
 115                 uint16_t nb_pkts)
 116 {
 117         unsigned int i;
 118         struct rte_mbuf *mbuf;
 119         struct szedata2_rx_queue *sze_q = queue;
 120         struct rte_pktmbuf_pool_private *mbp_priv;
 121         uint16_t num_rx = 0;
 122         uint16_t buf_size;
 123         uint16_t sg_size;
 124         uint16_t hw_size;
 125         uint16_t packet_size;
 126         uint64_t num_bytes = 0;
 127         struct szedata *sze = sze_q->sze;
 128         uint8_t *header_ptr = NULL; /* header of packet */
 129         uint8_t *packet_ptr1 = NULL;
 130         uint8_t *packet_ptr2 = NULL;
 131         uint16_t packet_len1 = 0;
 132         uint16_t packet_len2 = 0;
 133         uint16_t hw_data_align;
 134
 135         if (unlikely(sze_q->sze == NULL || nb_pkts == 0))
 136                 return 0;
 137
 138         /*
 139          * Reads the given number of packets from szedata2 channel given
 140          * by queue and copies the packet data into a newly allocated mbuf
 141          * to return.
 142          */
 143         for (i = 0; i < nb_pkts; i++) {
 144                 mbuf = rte_pktmbuf_alloc(sze_q->mb_pool);
 145
 146                 if (unlikely(mbuf == NULL)) {
 147                         sze_q->priv->dev->data->rx_mbuf_alloc_failed++;
 148                         break;
 149                 }
 150
 151                 /* get the next sze packet */
 152                 if (sze->ct_rx_lck != NULL && !sze->ct_rx_rem_bytes &&
 153                                 sze->ct_rx_lck->next == NULL) {
 154                         /* unlock old data */
 155                         szedata_rx_unlock_data(sze_q->sze, sze->ct_rx_lck_orig);
 156                         sze->ct_rx_lck_orig = NULL;
 157                         sze->ct_rx_lck = NULL;
 158                 }
 159
 160                 if (!sze->ct_rx_rem_bytes && sze->ct_rx_lck_orig == NULL) {
 161                         /* nothing to read, lock new data */
 162                         sze->ct_rx_lck = szedata_rx_lock_data(sze_q->sze, ~0U);
 163                         sze->ct_rx_lck_orig = sze->ct_rx_lck;
 164
 165                         if (sze->ct_rx_lck == NULL) {
 166                                 /* nothing to lock */
 167                                 rte_pktmbuf_free(mbuf);
 168                                 break;
 169                         }
 170
 171                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 172                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len;
 173
 174                         if (!sze->ct_rx_rem_bytes) {
 175                                 rte_pktmbuf_free(mbuf);
 176                                 break;
 177                         }
 178                 }
 179
 180                 if (sze->ct_rx_rem_bytes < RTE_SZE2_PACKET_HEADER_SIZE) {
 181                         /*
 182                          * cut in header
 183                          * copy parts of header to merge buffer
 184                          */
 185                         if (sze->ct_rx_lck->next == NULL) {
 186                                 rte_pktmbuf_free(mbuf);
 187                                 break;
 188                         }
 189
 190                         /* copy first part of header */
 191                         rte_memcpy(sze->ct_rx_buffer, sze->ct_rx_cur_ptr,
 192                                         sze->ct_rx_rem_bytes);
 193
 194                         /* copy second part of header */
 195                         sze->ct_rx_lck = sze->ct_rx_lck->next;
 196                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 197                         rte_memcpy(sze->ct_rx_buffer + sze->ct_rx_rem_bytes,
 198                                 sze->ct_rx_cur_ptr,
 199                                 RTE_SZE2_PACKET_HEADER_SIZE -
 200                                 sze->ct_rx_rem_bytes);
 201
 202                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE -
 203                                 sze->ct_rx_rem_bytes;
 204                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 205                                 RTE_SZE2_PACKET_HEADER_SIZE +
 206                                 sze->ct_rx_rem_bytes;
 207
 208                         header_ptr = (uint8_t *)sze->ct_rx_buffer;
 209                 } else {
 210                         /* not cut */
 211                         header_ptr = (uint8_t *)sze->ct_rx_cur_ptr;
 212                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE;
 213                         sze->ct_rx_rem_bytes -= RTE_SZE2_PACKET_HEADER_SIZE;
 214                 }
 215
 216                 sg_size = le16toh(*((uint16_t *)header_ptr));
 217                 hw_size = le16toh(*(((uint16_t *)header_ptr) + 1));
 218                 packet_size = sg_size -
 219                         RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size);
 220
 221
 222                 /* checks if packet all right */
 223                 if (!sg_size)
 224                         errx(5, "Zero segsize");
 225
 226                 /* check sg_size and hwsize */
 227                 if (hw_size > sg_size - RTE_SZE2_PACKET_HEADER_SIZE) {
 228                         errx(10, "Hwsize bigger than expected. Segsize: %d, "
 229                                 "hwsize: %d", sg_size, hw_size);
 230                 }
 231
 232                 hw_data_align =
 233                         RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size) -
 234                         RTE_SZE2_PACKET_HEADER_SIZE;
 235
 236                 if (sze->ct_rx_rem_bytes >=
 237                                 (uint16_t)(sg_size -
 238                                 RTE_SZE2_PACKET_HEADER_SIZE)) {
 239                         /* no cut */
 240                         /* one packet ready - go to another */
 241                         packet_ptr1 = sze->ct_rx_cur_ptr + hw_data_align;
 242                         packet_len1 = packet_size;
 243                         packet_ptr2 = NULL;
 244                         packet_len2 = 0;
 245
 246                         sze->ct_rx_cur_ptr += RTE_SZE2_ALIGN8(sg_size) -
 247                                 RTE_SZE2_PACKET_HEADER_SIZE;
 248                         sze->ct_rx_rem_bytes -= RTE_SZE2_ALIGN8(sg_size) -
 249                                 RTE_SZE2_PACKET_HEADER_SIZE;
 250                 } else {
 251                         /* cut in data */
 252                         if (sze->ct_rx_lck->next == NULL) {
 253                                 errx(6, "Need \"next\" lock, "
 254                                         "but it is missing: %u",
 255                                         sze->ct_rx_rem_bytes);
 256                         }
 257
 258                         /* skip hw data */
 259                         if (sze->ct_rx_rem_bytes <= hw_data_align) {
 260                                 uint16_t rem_size = hw_data_align -
 261                                         sze->ct_rx_rem_bytes;
 262
 263                                 /* MOVE to next lock */
 264                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 265                                 sze->ct_rx_cur_ptr =
 266                                         (void *)(((uint8_t *)
 267                                         (sze->ct_rx_lck->start)) + rem_size);
 268
 269                                 packet_ptr1 = sze->ct_rx_cur_ptr;
 270                                 packet_len1 = packet_size;
 271                                 packet_ptr2 = NULL;
 272                                 packet_len2 = 0;
 273
 274                                 sze->ct_rx_cur_ptr +=
 275                                         RTE_SZE2_ALIGN8(packet_size);
 276                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 277                                         rem_size - RTE_SZE2_ALIGN8(packet_size);
 278                         } else {
 279                                 /* get pointer and length from first part */
 280                                 packet_ptr1 = sze->ct_rx_cur_ptr +
 281                                         hw_data_align;
 282                                 packet_len1 = sze->ct_rx_rem_bytes -
 283                                         hw_data_align;
 284
 285                                 /* MOVE to next lock */
 286                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 287                                 sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 288
 289                                 /* get pointer and length from second part */
 290                                 packet_ptr2 = sze->ct_rx_cur_ptr;
 291                                 packet_len2 = packet_size - packet_len1;
 292
 293                                 sze->ct_rx_cur_ptr +=
 294                                         RTE_SZE2_ALIGN8(packet_size) -
 295                                         packet_len1;
 296                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 297                                         (RTE_SZE2_ALIGN8(packet_size) -
 298                                          packet_len1);
 299                         }
 300                 }
 301
 302                 if (unlikely(packet_ptr1 == NULL)) {
 303                         rte_pktmbuf_free(mbuf);
 304                         break;
 305                 }
 306
 307                 /* get the space available for data in the mbuf */
 308                 mbp_priv = rte_mempool_get_priv(sze_q->mb_pool);
 309                 buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
 310                                 RTE_PKTMBUF_HEADROOM);
 311
 312                 if (packet_size <= buf_size) {
 313                         /* sze packet will fit in one mbuf, go ahead and copy */
 314                         rte_memcpy(rte_pktmbuf_mtod(mbuf, void *),
 315                                         packet_ptr1, packet_len1);
 316                         if (packet_ptr2 != NULL) {
 317                                 rte_memcpy((void *)(rte_pktmbuf_mtod(mbuf,
 318                                         uint8_t *) + packet_len1),
 319                                         packet_ptr2, packet_len2);
 320                         }
 321                         mbuf->data_len = (uint16_t)packet_size;
 322
 323                         mbuf->pkt_len = packet_size;
 324                         mbuf->port = sze_q->in_port;
 325                         bufs[num_rx] = mbuf;
 326                         num_rx++;
 327                         num_bytes += packet_size;
 328                 } else {
 329                         /*
 330                          * sze packet will not fit in one mbuf,
 331                          * scattered mode is not enabled, drop packet
 332                          */
 333                         PMD_DRV_LOG(ERR,
 334                                 "SZE segment %d bytes will not fit in one mbuf "
 335                                 "(%d bytes), scattered mode is not enabled, "
 336                                 "drop packet!!",
 337                                 packet_size, buf_size);
 338                         rte_pktmbuf_free(mbuf);
 339                 }
 340         }
 341
 342         sze_q->rx_pkts += num_rx;
 343         sze_q->rx_bytes += num_bytes;
 344         return num_rx;
 345 }
 346
 347 static uint16_t
 348 eth_szedata2_rx_scattered(void *queue,
 349                 struct rte_mbuf **bufs,
 350                 uint16_t nb_pkts)
 351 {
 352         unsigned int i;
 353         struct rte_mbuf *mbuf;
 354         struct szedata2_rx_queue *sze_q = queue;
 355         struct rte_pktmbuf_pool_private *mbp_priv;
 356         uint16_t num_rx = 0;
 357         uint16_t buf_size;
 358         uint16_t sg_size;
 359         uint16_t hw_size;
 360         uint16_t packet_size;
 361         uint64_t num_bytes = 0;
 362         struct szedata *sze = sze_q->sze;
 363         uint8_t *header_ptr = NULL; /* header of packet */
 364         uint8_t *packet_ptr1 = NULL;
 365         uint8_t *packet_ptr2 = NULL;
 366         uint16_t packet_len1 = 0;
 367         uint16_t packet_len2 = 0;
 368         uint16_t hw_data_align;
 369         uint64_t *mbuf_failed_ptr =
 370                 &sze_q->priv->dev->data->rx_mbuf_alloc_failed;
 371
 372         if (unlikely(sze_q->sze == NULL || nb_pkts == 0))
 373                 return 0;
 374
 375         /*
 376          * Reads the given number of packets from szedata2 channel given
 377          * by queue and copies the packet data into a newly allocated mbuf
 378          * to return.
 379          */
 380         for (i = 0; i < nb_pkts; i++) {
 381                 const struct szedata_lock *ct_rx_lck_backup;
 382                 unsigned int ct_rx_rem_bytes_backup;
 383                 unsigned char *ct_rx_cur_ptr_backup;
 384
 385                 /* get the next sze packet */
 386                 if (sze->ct_rx_lck != NULL && !sze->ct_rx_rem_bytes &&
 387                                 sze->ct_rx_lck->next == NULL) {
 388                         /* unlock old data */
 389                         szedata_rx_unlock_data(sze_q->sze, sze->ct_rx_lck_orig);
 390                         sze->ct_rx_lck_orig = NULL;
 391                         sze->ct_rx_lck = NULL;
 392                 }
 393
 394                 /*
 395                  * Store items from sze structure which can be changed
 396                  * before mbuf allocating. Use these items in case of mbuf
 397                  * allocating failure.
 398                  */
 399                 ct_rx_lck_backup = sze->ct_rx_lck;
 400                 ct_rx_rem_bytes_backup = sze->ct_rx_rem_bytes;
 401                 ct_rx_cur_ptr_backup = sze->ct_rx_cur_ptr;
 402
 403                 if (!sze->ct_rx_rem_bytes && sze->ct_rx_lck_orig == NULL) {
 404                         /* nothing to read, lock new data */
 405                         sze->ct_rx_lck = szedata_rx_lock_data(sze_q->sze, ~0U);
 406                         sze->ct_rx_lck_orig = sze->ct_rx_lck;
 407
 408                         /*
 409                          * Backup items from sze structure must be updated
 410                          * after locking to contain pointers to new locks.
 411                          */
 412                         ct_rx_lck_backup = sze->ct_rx_lck;
 413                         ct_rx_rem_bytes_backup = sze->ct_rx_rem_bytes;
 414                         ct_rx_cur_ptr_backup = sze->ct_rx_cur_ptr;
 415
 416                         if (sze->ct_rx_lck == NULL)
 417                                 /* nothing to lock */
 418                                 break;
 419
 420                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 421                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len;
 422
 423                         if (!sze->ct_rx_rem_bytes)
 424                                 break;
 425                 }
 426
 427                 if (sze->ct_rx_rem_bytes < RTE_SZE2_PACKET_HEADER_SIZE) {
 428                         /*
 429                          * cut in header - copy parts of header to merge buffer
 430                          */
 431                         if (sze->ct_rx_lck->next == NULL)
 432                                 break;
 433
 434                         /* copy first part of header */
 435                         rte_memcpy(sze->ct_rx_buffer, sze->ct_rx_cur_ptr,
 436                                         sze->ct_rx_rem_bytes);
 437
 438                         /* copy second part of header */
 439                         sze->ct_rx_lck = sze->ct_rx_lck->next;
 440                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 441                         rte_memcpy(sze->ct_rx_buffer + sze->ct_rx_rem_bytes,
 442                                 sze->ct_rx_cur_ptr,
 443                                 RTE_SZE2_PACKET_HEADER_SIZE -
 444                                 sze->ct_rx_rem_bytes);
 445
 446                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE -
 447                                 sze->ct_rx_rem_bytes;
 448                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 449                                 RTE_SZE2_PACKET_HEADER_SIZE +
 450                                 sze->ct_rx_rem_bytes;
 451
 452                         header_ptr = (uint8_t *)sze->ct_rx_buffer;
 453                 } else {
 454                         /* not cut */
 455                         header_ptr = (uint8_t *)sze->ct_rx_cur_ptr;
 456                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE;
 457                         sze->ct_rx_rem_bytes -= RTE_SZE2_PACKET_HEADER_SIZE;
 458                 }
 459
 460                 sg_size = le16toh(*((uint16_t *)header_ptr));
 461                 hw_size = le16toh(*(((uint16_t *)header_ptr) + 1));
 462                 packet_size = sg_size -
 463                         RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size);
 464
 465
 466                 /* checks if packet all right */
 467                 if (!sg_size)
 468                         errx(5, "Zero segsize");
 469
 470                 /* check sg_size and hwsize */
 471                 if (hw_size > sg_size - RTE_SZE2_PACKET_HEADER_SIZE) {
 472                         errx(10, "Hwsize bigger than expected. Segsize: %d, "
 473                                         "hwsize: %d", sg_size, hw_size);
 474                 }
 475
 476                 hw_data_align =
 477                         RTE_SZE2_ALIGN8((RTE_SZE2_PACKET_HEADER_SIZE +
 478                         hw_size)) - RTE_SZE2_PACKET_HEADER_SIZE;
 479
 480                 if (sze->ct_rx_rem_bytes >=
 481                                 (uint16_t)(sg_size -
 482                                 RTE_SZE2_PACKET_HEADER_SIZE)) {
 483                         /* no cut */
 484                         /* one packet ready - go to another */
 485                         packet_ptr1 = sze->ct_rx_cur_ptr + hw_data_align;
 486                         packet_len1 = packet_size;
 487                         packet_ptr2 = NULL;
 488                         packet_len2 = 0;
 489
 490                         sze->ct_rx_cur_ptr += RTE_SZE2_ALIGN8(sg_size) -
 491                                 RTE_SZE2_PACKET_HEADER_SIZE;
 492                         sze->ct_rx_rem_bytes -= RTE_SZE2_ALIGN8(sg_size) -
 493                                 RTE_SZE2_PACKET_HEADER_SIZE;
 494                 } else {
 495                         /* cut in data */
 496                         if (sze->ct_rx_lck->next == NULL) {
 497                                 errx(6, "Need \"next\" lock, but it is "
 498                                         "missing: %u", sze->ct_rx_rem_bytes);
 499                         }
 500
 501                         /* skip hw data */
 502                         if (sze->ct_rx_rem_bytes <= hw_data_align) {
 503                                 uint16_t rem_size = hw_data_align -
 504                                         sze->ct_rx_rem_bytes;
 505
 506                                 /* MOVE to next lock */
 507                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 508                                 sze->ct_rx_cur_ptr =
 509                                         (void *)(((uint8_t *)
 510                                         (sze->ct_rx_lck->start)) + rem_size);
 511
 512                                 packet_ptr1 = sze->ct_rx_cur_ptr;
 513                                 packet_len1 = packet_size;
 514                                 packet_ptr2 = NULL;
 515                                 packet_len2 = 0;
 516
 517                                 sze->ct_rx_cur_ptr +=
 518                                         RTE_SZE2_ALIGN8(packet_size);
 519                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 520                                         rem_size - RTE_SZE2_ALIGN8(packet_size);
 521                         } else {
 522                                 /* get pointer and length from first part */
 523                                 packet_ptr1 = sze->ct_rx_cur_ptr +
 524                                         hw_data_align;
 525                                 packet_len1 = sze->ct_rx_rem_bytes -
 526                                         hw_data_align;
 527
 528                                 /* MOVE to next lock */
 529                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 530                                 sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 531
 532                                 /* get pointer and length from second part */
 533                                 packet_ptr2 = sze->ct_rx_cur_ptr;
 534                                 packet_len2 = packet_size - packet_len1;
 535
 536                                 sze->ct_rx_cur_ptr +=
 537                                         RTE_SZE2_ALIGN8(packet_size) -
 538                                         packet_len1;
 539                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 540                                         (RTE_SZE2_ALIGN8(packet_size) -
 541                                          packet_len1);
 542                         }
 543                 }
 544
 545                 if (unlikely(packet_ptr1 == NULL))
 546                         break;
 547
 548                 mbuf = rte_pktmbuf_alloc(sze_q->mb_pool);
 549
 550                 if (unlikely(mbuf == NULL)) {
 551                         /*
 552                          * Restore items from sze structure to state after
 553                          * unlocking (eventually locking).
 554                          */
 555                         sze->ct_rx_lck = ct_rx_lck_backup;
 556                         sze->ct_rx_rem_bytes = ct_rx_rem_bytes_backup;
 557                         sze->ct_rx_cur_ptr = ct_rx_cur_ptr_backup;
 558                         sze_q->priv->dev->data->rx_mbuf_alloc_failed++;
 559                         break;
 560                 }
 561
 562                 /* get the space available for data in the mbuf */
 563                 mbp_priv = rte_mempool_get_priv(sze_q->mb_pool);
 564                 buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
 565                                 RTE_PKTMBUF_HEADROOM);
 566
 567                 if (packet_size <= buf_size) {
 568                         /* sze packet will fit in one mbuf, go ahead and copy */
 569                         rte_memcpy(rte_pktmbuf_mtod(mbuf, void *),
 570                                         packet_ptr1, packet_len1);
 571                         if (packet_ptr2 != NULL) {
 572                                 rte_memcpy((void *)
 573                                         (rte_pktmbuf_mtod(mbuf, uint8_t *) +
 574                                         packet_len1), packet_ptr2, packet_len2);
 575                         }
 576                         mbuf->data_len = (uint16_t)packet_size;
 577                 } else {
 578                         /*
 579                          * sze packet will not fit in one mbuf,
 580                          * scatter packet into more mbufs
 581                          */
 582                         struct rte_mbuf *m = mbuf;
 583                         uint16_t len = rte_pktmbuf_tailroom(mbuf);
 584
 585                         /* copy first part of packet */
 586                         /* fill first mbuf */
 587                         rte_memcpy(rte_pktmbuf_append(mbuf, len), packet_ptr1,
 588                                 len);
 589                         packet_len1 -= len;
 590                         packet_ptr1 = ((uint8_t *)packet_ptr1) + len;
 591
 592                         while (packet_len1 > 0) {
 593                                 /* fill new mbufs */
 594                                 m->next = rte_pktmbuf_alloc(sze_q->mb_pool);
 595
 596                                 if (unlikely(m->next == NULL)) {
 597                                         rte_pktmbuf_free(mbuf);
 598                                         /*
 599                                          * Restore items from sze structure
 600                                          * to state after unlocking (eventually
 601                                          * locking).
 602                                          */
 603                                         sze->ct_rx_lck = ct_rx_lck_backup;
 604                                         sze->ct_rx_rem_bytes =
 605                                                 ct_rx_rem_bytes_backup;
 606                                         sze->ct_rx_cur_ptr =
 607                                                 ct_rx_cur_ptr_backup;
 608                                         (*mbuf_failed_ptr)++;
 609                                         goto finish;
 610                                 }
 611
 612                                 m = m->next;
 613
 614                                 len = RTE_MIN(rte_pktmbuf_tailroom(m),
 615                                         packet_len1);
 616                                 rte_memcpy(rte_pktmbuf_append(mbuf, len),
 617                                         packet_ptr1, len);
 618
 619                                 (mbuf->nb_segs)++;
 620                                 packet_len1 -= len;
 621                                 packet_ptr1 = ((uint8_t *)packet_ptr1) + len;
 622                         }
 623
 624                         if (packet_ptr2 != NULL) {
 625                                 /* copy second part of packet, if exists */
 626                                 /* fill the rest of currently last mbuf */
 627                                 len = rte_pktmbuf_tailroom(m);
 628                                 rte_memcpy(rte_pktmbuf_append(mbuf, len),
 629                                         packet_ptr2, len);
 630                                 packet_len2 -= len;
 631                                 packet_ptr2 = ((uint8_t *)packet_ptr2) + len;
 632
 633                                 while (packet_len2 > 0) {
 634                                         /* fill new mbufs */
 635                                         m->next = rte_pktmbuf_alloc(
 636                                                         sze_q->mb_pool);
 637
 638                                         if (unlikely(m->next == NULL)) {
 639                                                 rte_pktmbuf_free(mbuf);
 640                                                 /*
 641                                                  * Restore items from sze
 642                                                  * structure to state after
 643                                                  * unlocking (eventually
 644                                                  * locking).
 645                                                  */
 646                                                 sze->ct_rx_lck =
 647                                                         ct_rx_lck_backup;
 648                                                 sze->ct_rx_rem_bytes =
 649                                                         ct_rx_rem_bytes_backup;
 650                                                 sze->ct_rx_cur_ptr =
 651                                                         ct_rx_cur_ptr_backup;
 652                                                 (*mbuf_failed_ptr)++;
 653                                                 goto finish;
 654                                         }
 655
 656                                         m = m->next;
 657
 658                                         len = RTE_MIN(rte_pktmbuf_tailroom(m),
 659                                                 packet_len2);
 660                                         rte_memcpy(
 661                                                 rte_pktmbuf_append(mbuf, len),
 662                                                 packet_ptr2, len);
 663
 664                                         (mbuf->nb_segs)++;
 665                                         packet_len2 -= len;
 666                                         packet_ptr2 = ((uint8_t *)packet_ptr2) +
 667                                                 len;
 668                                 }
 669                         }
 670                 }
 671                 mbuf->pkt_len = packet_size;
 672                 mbuf->port = sze_q->in_port;
 673                 bufs[num_rx] = mbuf;
 674                 num_rx++;
 675                 num_bytes += packet_size;
 676         }
 677
 678 finish:
 679         sze_q->rx_pkts += num_rx;
 680         sze_q->rx_bytes += num_bytes;
 681         return num_rx;
 682 }
 683
 684 static uint16_t
 685 eth_szedata2_tx(void *queue,
 686                 struct rte_mbuf **bufs,
 687                 uint16_t nb_pkts)
 688 {
 689         struct rte_mbuf *mbuf;
 690         struct szedata2_tx_queue *sze_q = queue;
 691         uint16_t num_tx = 0;
 692         uint64_t num_bytes = 0;
 693
 694         const struct szedata_lock *lck;
 695         uint32_t lock_size;
 696         uint32_t lock_size2;
 697         void *dst;
 698         uint32_t pkt_len;
 699         uint32_t hwpkt_len;
 700         uint32_t unlock_size;
 701         uint32_t rem_len;
 702         uint16_t mbuf_segs;
 703         uint16_t pkt_left = nb_pkts;
 704
 705         if (sze_q->sze == NULL || nb_pkts == 0)
 706                 return 0;
 707
 708         while (pkt_left > 0) {
 709                 unlock_size = 0;
 710                 lck = szedata_tx_lock_data(sze_q->sze,
 711                         RTE_ETH_SZEDATA2_TX_LOCK_SIZE,
 712                         sze_q->tx_channel);
 713                 if (lck == NULL)
 714                         continue;
 715
 716                 dst = lck->start;
 717                 lock_size = lck->len;
 718                 lock_size2 = lck->next ? lck->next->len : 0;
 719
 720 next_packet:
 721                 mbuf = bufs[nb_pkts - pkt_left];
 722
 723                 pkt_len = mbuf->pkt_len;
 724                 mbuf_segs = mbuf->nb_segs;
 725
 726                 hwpkt_len = RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
 727                         RTE_SZE2_ALIGN8(pkt_len);
 728
 729                 if (lock_size + lock_size2 < hwpkt_len) {
 730                         szedata_tx_unlock_data(sze_q->sze, lck, unlock_size);
 731                         continue;
 732                 }
 733
 734                 num_bytes += pkt_len;
 735
 736                 if (lock_size > hwpkt_len) {
 737                         void *tmp_dst;
 738
 739                         rem_len = 0;
 740
 741                         /* write packet length at first 2 bytes in 8B header */
 742                         *((uint16_t *)dst) = htole16(
 743                                         RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
 744                                         pkt_len);
 745                         *(((uint16_t *)dst) + 1) = htole16(0);
 746
 747                         /* copy packet from mbuf */
 748                         tmp_dst = ((uint8_t *)(dst)) +
 749                                 RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
 750                         if (mbuf_segs == 1) {
 751                                 /*
 752                                  * non-scattered packet,
 753                                  * transmit from one mbuf
 754                                  */
 755                                 rte_memcpy(tmp_dst,
 756                                         rte_pktmbuf_mtod(mbuf, const void *),
 757                                         pkt_len);
 758                         } else {
 759                                 /* scattered packet, transmit from more mbufs */
 760                                 struct rte_mbuf *m = mbuf;
 761                                 while (m) {
 762                                         rte_memcpy(tmp_dst,
 763                                                 rte_pktmbuf_mtod(m,
 764                                                 const void *),
 765                                                 m->data_len);
 766                                         tmp_dst = ((uint8_t *)(tmp_dst)) +
 767                                                 m->data_len;
 768                                         m = m->next;
 769                                 }
 770                         }
 771
 772
 773                         dst = ((uint8_t *)dst) + hwpkt_len;
 774                         unlock_size += hwpkt_len;
 775                         lock_size -= hwpkt_len;
 776
 777                         rte_pktmbuf_free(mbuf);
 778                         num_tx++;
 779                         pkt_left--;
 780                         if (pkt_left == 0) {
 781                                 szedata_tx_unlock_data(sze_q->sze, lck,
 782                                         unlock_size);
 783                                 break;
 784                         }
 785                         goto next_packet;
 786                 } else if (lock_size + lock_size2 >= hwpkt_len) {
 787                         void *tmp_dst;
 788                         uint16_t write_len;
 789
 790                         /* write packet length at first 2 bytes in 8B header */
 791                         *((uint16_t *)dst) =
 792                                 htole16(RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
 793                                         pkt_len);
 794                         *(((uint16_t *)dst) + 1) = htole16(0);
 795
 796                         /*
 797                          * If the raw packet (pkt_len) is smaller than lock_size
 798                          * get the correct length for memcpy
 799                          */
 800                         write_len =
 801                                 pkt_len < lock_size -
 802                                 RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED ?
 803                                 pkt_len :
 804                                 lock_size - RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
 805
 806                         rem_len = hwpkt_len - lock_size;
 807
 808                         tmp_dst = ((uint8_t *)(dst)) +
 809                                 RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
 810                         if (mbuf_segs == 1) {
 811                                 /*
 812                                  * non-scattered packet,
 813                                  * transmit from one mbuf
 814                                  */
 815                                 /* copy part of packet to first area */
 816                                 rte_memcpy(tmp_dst,
 817                                         rte_pktmbuf_mtod(mbuf, const void *),
 818                                         write_len);
 819
 820                                 if (lck->next)
 821                                         dst = lck->next->start;
 822
 823                                 /* copy part of packet to second area */
 824                                 rte_memcpy(dst,
 825                                         (const void *)(rte_pktmbuf_mtod(mbuf,
 826                                                         const uint8_t *) +
 827                                         write_len), pkt_len - write_len);
 828                         } else {
 829                                 /* scattered packet, transmit from more mbufs */
 830                                 struct rte_mbuf *m = mbuf;
 831                                 uint16_t written = 0;
 832                                 uint16_t to_write = 0;
 833                                 bool new_mbuf = true;
 834                                 uint16_t write_off = 0;
 835
 836                                 /* copy part of packet to first area */
 837                                 while (m && written < write_len) {
 838                                         to_write = RTE_MIN(m->data_len,
 839                                                         write_len - written);
 840                                         rte_memcpy(tmp_dst,
 841                                                 rte_pktmbuf_mtod(m,
 842                                                         const void *),
 843                                                 to_write);
 844
 845                                         tmp_dst = ((uint8_t *)(tmp_dst)) +
 846                                                 to_write;
 847                                         if (m->data_len <= write_len -
 848                                                         written) {
 849                                                 m = m->next;
 850                                                 new_mbuf = true;
 851                                         } else {
 852                                                 new_mbuf = false;
 853                                         }
 854                                         written += to_write;
 855                                 }
 856
 857                                 if (lck->next)
 858                                         dst = lck->next->start;
 859
 860                                 tmp_dst = dst;
 861                                 written = 0;
 862                                 write_off = new_mbuf ? 0 : to_write;
 863
 864                                 /* copy part of packet to second area */
 865                                 while (m && written < pkt_len - write_len) {
 866                                         rte_memcpy(tmp_dst, (const void *)
 867                                                 (rte_pktmbuf_mtod(m,
 868                                                 uint8_t *) + write_off),
 869                                                 m->data_len - write_off);
 870
 871                                         tmp_dst = ((uint8_t *)(tmp_dst)) +
 872                                                 (m->data_len - write_off);
 873                                         written += m->data_len - write_off;
 874                                         m = m->next;
 875                                         write_off = 0;
 876                                 }
 877                         }
 878
 879                         dst = ((uint8_t *)dst) + rem_len;
 880                         unlock_size += hwpkt_len;
 881                         lock_size = lock_size2 - rem_len;
 882                         lock_size2 = 0;
 883
 884                         rte_pktmbuf_free(mbuf);
 885                         num_tx++;
 886                 }
 887
 888                 szedata_tx_unlock_data(sze_q->sze, lck, unlock_size);
 889                 pkt_left--;
 890         }
 891
 892         sze_q->tx_pkts += num_tx;
 893         sze_q->err_pkts += nb_pkts - num_tx;
 894         sze_q->tx_bytes += num_bytes;
 895         return num_tx;
 896 }
 897
 898 static int
 899 eth_rx_queue_start(struct rte_eth_dev *dev, uint16_t rxq_id)
 900 {
 901         struct szedata2_rx_queue *rxq = dev->data->rx_queues[rxq_id];
 902         int ret;
 903         struct pmd_internals *internals = (struct pmd_internals *)
 904                 dev->data->dev_private;
 905
 906         if (rxq->sze == NULL) {
 907                 uint32_t rx = 1 << rxq->rx_channel;
 908                 uint32_t tx = 0;
 909                 rxq->sze = szedata_open(internals->sze_dev_path);
 910                 if (rxq->sze == NULL)
 911                         return -EINVAL;
 912                 ret = szedata_subscribe3(rxq->sze, &rx, &tx);
 913                 if (ret != 0 || rx == 0)
 914                         goto err;
 915         }
 916
 917         ret = szedata_start(rxq->sze);
 918         if (ret != 0)
 919                 goto err;
 920         dev->data->rx_queue_state[rxq_id] = RTE_ETH_QUEUE_STATE_STARTED;
 921         return 0;
 922
 923 err:
 924         szedata_close(rxq->sze);
 925         rxq->sze = NULL;
 926         return -EINVAL;
 927 }
 928
 929 static int
 930 eth_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rxq_id)
 931 {
 932         struct szedata2_rx_queue *rxq = dev->data->rx_queues[rxq_id];
 933
 934         if (rxq->sze != NULL) {
 935                 szedata_close(rxq->sze);
 936                 rxq->sze = NULL;
 937         }
 938
 939         dev->data->rx_queue_state[rxq_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 940         return 0;
 941 }
 942
 943 static int
 944 eth_tx_queue_start(struct rte_eth_dev *dev, uint16_t txq_id)
 945 {
 946         struct szedata2_tx_queue *txq = dev->data->tx_queues[txq_id];
 947         int ret;
 948         struct pmd_internals *internals = (struct pmd_internals *)
 949                 dev->data->dev_private;
 950
 951         if (txq->sze == NULL) {
 952                 uint32_t rx = 0;
 953                 uint32_t tx = 1 << txq->tx_channel;
 954                 txq->sze = szedata_open(internals->sze_dev_path);
 955                 if (txq->sze == NULL)
 956                         return -EINVAL;
 957                 ret = szedata_subscribe3(txq->sze, &rx, &tx);
 958                 if (ret != 0 || tx == 0)
 959                         goto err;
 960         }
 961
 962         ret = szedata_start(txq->sze);
 963         if (ret != 0)
 964                 goto err;
 965         dev->data->tx_queue_state[txq_id] = RTE_ETH_QUEUE_STATE_STARTED;
 966         return 0;
 967
 968 err:
 969         szedata_close(txq->sze);
 970         txq->sze = NULL;
 971         return -EINVAL;
 972 }
 973
 974 static int
 975 eth_tx_queue_stop(struct rte_eth_dev *dev, uint16_t txq_id)
 976 {
 977         struct szedata2_tx_queue *txq = dev->data->tx_queues[txq_id];
 978
 979         if (txq->sze != NULL) {
 980                 szedata_close(txq->sze);
 981                 txq->sze = NULL;
 982         }
 983
 984         dev->data->tx_queue_state[txq_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 985         return 0;
 986 }
 987
 988 static int
 989 eth_dev_start(struct rte_eth_dev *dev)
 990 {
 991         int ret;
 992         uint16_t i;
 993         uint16_t nb_rx = dev->data->nb_rx_queues;
 994         uint16_t nb_tx = dev->data->nb_tx_queues;
 995
 996         for (i = 0; i < nb_rx; i++) {
 997                 ret = eth_rx_queue_start(dev, i);
 998                 if (ret != 0)
 999                         goto err_rx;
1000         }
1001
1002         for (i = 0; i < nb_tx; i++) {
1003                 ret = eth_tx_queue_start(dev, i);
1004                 if (ret != 0)
1005                         goto err_tx;
1006         }
1007
1008         return 0;
1009
1010 err_tx:
1011         for (i = 0; i < nb_tx; i++)
1012                 eth_tx_queue_stop(dev, i);
1013 err_rx:
1014         for (i = 0; i < nb_rx; i++)
1015                 eth_rx_queue_stop(dev, i);
1016         return ret;
1017 }
1018
1019 static void
1020 eth_dev_stop(struct rte_eth_dev *dev)
1021 {
1022         uint16_t i;
1023         uint16_t nb_rx = dev->data->nb_rx_queues;
1024         uint16_t nb_tx = dev->data->nb_tx_queues;
1025
1026         for (i = 0; i < nb_tx; i++)
1027                 eth_tx_queue_stop(dev, i);
1028
1029         for (i = 0; i < nb_rx; i++)
1030                 eth_rx_queue_stop(dev, i);
1031 }
1032
1033 static int
1034 eth_dev_configure(struct rte_eth_dev *dev)
1035 {
1036         struct rte_eth_dev_data *data = dev->data;
1037         if (data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_SCATTER) {
1038                 dev->rx_pkt_burst = eth_szedata2_rx_scattered;
1039                 data->scattered_rx = 1;
1040         } else {
1041                 dev->rx_pkt_burst = eth_szedata2_rx;
1042                 data->scattered_rx = 0;
1043         }
1044         return 0;
1045 }
1046
1047 static void
1048 eth_dev_info(struct rte_eth_dev *dev,
1049                 struct rte_eth_dev_info *dev_info)
1050 {
1051         struct pmd_internals *internals = dev->data->dev_private;
1052
1053         dev_info->if_index = 0;
1054         dev_info->max_mac_addrs = 1;
1055         dev_info->max_rx_pktlen = (uint32_t)-1;
1056         dev_info->max_rx_queues = internals->max_rx_queues;
1057         dev_info->max_tx_queues = internals->max_tx_queues;
1058         dev_info->min_rx_bufsize = 0;
1059         dev_info->rx_offload_capa = DEV_RX_OFFLOAD_SCATTER;
1060         dev_info->tx_offload_capa = 0;
1061         dev_info->rx_queue_offload_capa = 0;
1062         dev_info->tx_queue_offload_capa = 0;
1063         dev_info->speed_capa = ETH_LINK_SPEED_100G;
1064 }
1065
1066 static int
1067 eth_stats_get(struct rte_eth_dev *dev,
1068                 struct rte_eth_stats *stats)
1069 {
1070         uint16_t i;
1071         uint16_t nb_rx = dev->data->nb_rx_queues;
1072         uint16_t nb_tx = dev->data->nb_tx_queues;
1073         uint64_t rx_total = 0;
1074         uint64_t tx_total = 0;
1075         uint64_t tx_err_total = 0;
1076         uint64_t rx_total_bytes = 0;
1077         uint64_t tx_total_bytes = 0;
1078
1079         for (i = 0; i < nb_rx; i++) {
1080                 struct szedata2_rx_queue *rxq = dev->data->rx_queues[i];
1081
1082                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
1083                         stats->q_ipackets[i] = rxq->rx_pkts;
1084                         stats->q_ibytes[i] = rxq->rx_bytes;
1085                 }
1086                 rx_total += rxq->rx_pkts;
1087                 rx_total_bytes += rxq->rx_bytes;
1088         }
1089
1090         for (i = 0; i < nb_tx; i++) {
1091                 struct szedata2_tx_queue *txq = dev->data->tx_queues[i];
1092
1093                 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
1094                         stats->q_opackets[i] = txq->tx_pkts;
1095                         stats->q_obytes[i] = txq->tx_bytes;
1096                 }
1097                 tx_total += txq->tx_pkts;
1098                 tx_total_bytes += txq->tx_bytes;
1099                 tx_err_total += txq->err_pkts;
1100         }
1101
1102         stats->ipackets = rx_total;
1103         stats->opackets = tx_total;
1104         stats->ibytes = rx_total_bytes;
1105         stats->obytes = tx_total_bytes;
1106         stats->oerrors = tx_err_total;
1107         stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
1108
1109         return 0;
1110 }
1111
1112 static void
1113 eth_stats_reset(struct rte_eth_dev *dev)
1114 {
1115         uint16_t i;
1116         uint16_t nb_rx = dev->data->nb_rx_queues;
1117         uint16_t nb_tx = dev->data->nb_tx_queues;
1118
1119         for (i = 0; i < nb_rx; i++) {
1120                 struct szedata2_rx_queue *rxq = dev->data->rx_queues[i];
1121                 rxq->rx_pkts = 0;
1122                 rxq->rx_bytes = 0;
1123                 rxq->err_pkts = 0;
1124         }
1125         for (i = 0; i < nb_tx; i++) {
1126                 struct szedata2_tx_queue *txq = dev->data->tx_queues[i];
1127                 txq->tx_pkts = 0;
1128                 txq->tx_bytes = 0;
1129                 txq->err_pkts = 0;
1130         }
1131 }
1132
1133 static void
1134 eth_rx_queue_release(void *q)
1135 {
1136         struct szedata2_rx_queue *rxq = (struct szedata2_rx_queue *)q;
1137
1138         if (rxq != NULL) {
1139                 if (rxq->sze != NULL)
1140                         szedata_close(rxq->sze);
1141                 rte_free(rxq);
1142         }
1143 }
1144
1145 static void
1146 eth_tx_queue_release(void *q)
1147 {
1148         struct szedata2_tx_queue *txq = (struct szedata2_tx_queue *)q;
1149
1150         if (txq != NULL) {
1151                 if (txq->sze != NULL)
1152                         szedata_close(txq->sze);
1153                 rte_free(txq);
1154         }
1155 }
1156
1157 static void
1158 eth_dev_close(struct rte_eth_dev *dev)
1159 {
1160         uint16_t i;
1161         uint16_t nb_rx = dev->data->nb_rx_queues;
1162         uint16_t nb_tx = dev->data->nb_tx_queues;
1163
1164         eth_dev_stop(dev);
1165
1166         for (i = 0; i < nb_rx; i++) {
1167                 eth_rx_queue_release(dev->data->rx_queues[i]);
1168                 dev->data->rx_queues[i] = NULL;
1169         }
1170         dev->data->nb_rx_queues = 0;
1171         for (i = 0; i < nb_tx; i++) {
1172                 eth_tx_queue_release(dev->data->tx_queues[i]);
1173                 dev->data->tx_queues[i] = NULL;
1174         }
1175         dev->data->nb_tx_queues = 0;
1176 }
1177
1178 static int
1179 eth_link_update(struct rte_eth_dev *dev,
1180                 int wait_to_complete __rte_unused)
1181 {
1182         struct rte_eth_link link;
1183
1184         memset(&link, 0, sizeof(link));
1185
1186         link.link_speed = ETH_SPEED_NUM_100G;
1187         link.link_duplex = ETH_LINK_FULL_DUPLEX;
1188         link.link_status = ETH_LINK_UP;
1189         link.link_autoneg = ETH_LINK_FIXED;
1190
1191         rte_eth_linkstatus_set(dev, &link);
1192         return 0;
1193 }
1194
1195 static int
1196 eth_dev_set_link_up(struct rte_eth_dev *dev __rte_unused)
1197 {
1198         PMD_DRV_LOG(WARNING, "Setting link up is not supported.");
1199         return 0;
1200 }
1201
1202 static int
1203 eth_dev_set_link_down(struct rte_eth_dev *dev __rte_unused)
1204 {
1205         PMD_DRV_LOG(WARNING, "Setting link down is not supported.");
1206         return 0;
1207 }
1208
1209 static int
1210 eth_rx_queue_setup(struct rte_eth_dev *dev,
1211                 uint16_t rx_queue_id,
1212                 uint16_t nb_rx_desc __rte_unused,
1213                 unsigned int socket_id,
1214                 const struct rte_eth_rxconf *rx_conf __rte_unused,
1215                 struct rte_mempool *mb_pool)
1216 {
1217         struct szedata2_rx_queue *rxq;
1218         int ret;
1219         struct pmd_internals *internals = dev->data->dev_private;
1220         uint8_t rx_channel = internals->rxq_base_id + rx_queue_id;
1221         uint32_t rx = 1 << rx_channel;
1222         uint32_t tx = 0;
1223
1224         PMD_INIT_FUNC_TRACE();
1225
1226         if (dev->data->rx_queues[rx_queue_id] != NULL) {
1227                 eth_rx_queue_release(dev->data->rx_queues[rx_queue_id]);
1228                 dev->data->rx_queues[rx_queue_id] = NULL;
1229         }
1230
1231         rxq = rte_zmalloc_socket("szedata2 rx queue",
1232                         sizeof(struct szedata2_rx_queue),
1233                         RTE_CACHE_LINE_SIZE, socket_id);
1234         if (rxq == NULL) {
1235                 PMD_INIT_LOG(ERR, "rte_zmalloc_socket() failed for rx queue id "
1236                                 "%" PRIu16 "!", rx_queue_id);
1237                 return -ENOMEM;
1238         }
1239
1240         rxq->priv = internals;
1241         rxq->sze = szedata_open(internals->sze_dev_path);
1242         if (rxq->sze == NULL) {
1243                 PMD_INIT_LOG(ERR, "szedata_open() failed for rx queue id "
1244                                 "%" PRIu16 "!", rx_queue_id);
1245                 eth_rx_queue_release(rxq);
1246                 return -EINVAL;
1247         }
1248         ret = szedata_subscribe3(rxq->sze, &rx, &tx);
1249         if (ret != 0 || rx == 0) {
1250                 PMD_INIT_LOG(ERR, "szedata_subscribe3() failed for rx queue id "
1251                                 "%" PRIu16 "!", rx_queue_id);
1252                 eth_rx_queue_release(rxq);
1253                 return -EINVAL;
1254         }
1255         rxq->rx_channel = rx_channel;
1256         rxq->qid = rx_queue_id;
1257         rxq->in_port = dev->data->port_id;
1258         rxq->mb_pool = mb_pool;
1259         rxq->rx_pkts = 0;
1260         rxq->rx_bytes = 0;
1261         rxq->err_pkts = 0;
1262
1263         dev->data->rx_queues[rx_queue_id] = rxq;
1264
1265         PMD_INIT_LOG(DEBUG, "Configured rx queue id %" PRIu16 " on socket "
1266                         "%u (channel id %u).", rxq->qid, socket_id,
1267                         rxq->rx_channel);
1268
1269         return 0;
1270 }
1271
1272 static int
1273 eth_tx_queue_setup(struct rte_eth_dev *dev,
1274                 uint16_t tx_queue_id,
1275                 uint16_t nb_tx_desc __rte_unused,
1276                 unsigned int socket_id,
1277                 const struct rte_eth_txconf *tx_conf __rte_unused)
1278 {
1279         struct szedata2_tx_queue *txq;
1280         int ret;
1281         struct pmd_internals *internals = dev->data->dev_private;
1282         uint8_t tx_channel = internals->txq_base_id + tx_queue_id;
1283         uint32_t rx = 0;
1284         uint32_t tx = 1 << tx_channel;
1285
1286         PMD_INIT_FUNC_TRACE();
1287
1288         if (dev->data->tx_queues[tx_queue_id] != NULL) {
1289                 eth_tx_queue_release(dev->data->tx_queues[tx_queue_id]);
1290                 dev->data->tx_queues[tx_queue_id] = NULL;
1291         }
1292
1293         txq = rte_zmalloc_socket("szedata2 tx queue",
1294                         sizeof(struct szedata2_tx_queue),
1295                         RTE_CACHE_LINE_SIZE, socket_id);
1296         if (txq == NULL) {
1297                 PMD_INIT_LOG(ERR, "rte_zmalloc_socket() failed for tx queue id "
1298                                 "%" PRIu16 "!", tx_queue_id);
1299                 return -ENOMEM;
1300         }
1301
1302         txq->priv = internals;
1303         txq->sze = szedata_open(internals->sze_dev_path);
1304         if (txq->sze == NULL) {
1305                 PMD_INIT_LOG(ERR, "szedata_open() failed for tx queue id "
1306                                 "%" PRIu16 "!", tx_queue_id);
1307                 eth_tx_queue_release(txq);
1308                 return -EINVAL;
1309         }
1310         ret = szedata_subscribe3(txq->sze, &rx, &tx);
1311         if (ret != 0 || tx == 0) {
1312                 PMD_INIT_LOG(ERR, "szedata_subscribe3() failed for tx queue id "
1313                                 "%" PRIu16 "!", tx_queue_id);
1314                 eth_tx_queue_release(txq);
1315                 return -EINVAL;
1316         }
1317         txq->tx_channel = tx_channel;
1318         txq->qid = tx_queue_id;
1319         txq->tx_pkts = 0;
1320         txq->tx_bytes = 0;
1321         txq->err_pkts = 0;
1322
1323         dev->data->tx_queues[tx_queue_id] = txq;
1324
1325         PMD_INIT_LOG(DEBUG, "Configured tx queue id %" PRIu16 " on socket "
1326                         "%u (channel id %u).", txq->qid, socket_id,
1327                         txq->tx_channel);
1328
1329         return 0;
1330 }
1331
1332 static int
1333 eth_mac_addr_set(struct rte_eth_dev *dev __rte_unused,
1334                 struct rte_ether_addr *mac_addr __rte_unused)
1335 {
1336         return 0;
1337 }
1338
1339 static void
1340 eth_promiscuous_enable(struct rte_eth_dev *dev __rte_unused)
1341 {
1342         PMD_DRV_LOG(WARNING, "Enabling promiscuous mode is not supported. "
1343                         "The card is always in promiscuous mode.");
1344 }
1345
1346 static void
1347 eth_promiscuous_disable(struct rte_eth_dev *dev __rte_unused)
1348 {
1349         PMD_DRV_LOG(WARNING, "Disabling promiscuous mode is not supported. "
1350                         "The card is always in promiscuous mode.");
1351 }
1352
1353 static void
1354 eth_allmulticast_enable(struct rte_eth_dev *dev __rte_unused)
1355 {
1356         PMD_DRV_LOG(WARNING, "Enabling allmulticast mode is not supported.");
1357 }
1358
1359 static void
1360 eth_allmulticast_disable(struct rte_eth_dev *dev __rte_unused)
1361 {
1362         PMD_DRV_LOG(WARNING, "Disabling allmulticast mode is not supported.");
1363 }
1364
1365 static const struct eth_dev_ops ops = {
1366         .dev_start          = eth_dev_start,
1367         .dev_stop           = eth_dev_stop,
1368         .dev_set_link_up    = eth_dev_set_link_up,
1369         .dev_set_link_down  = eth_dev_set_link_down,
1370         .dev_close          = eth_dev_close,
1371         .dev_configure      = eth_dev_configure,
1372         .dev_infos_get      = eth_dev_info,
1373         .promiscuous_enable   = eth_promiscuous_enable,
1374         .promiscuous_disable  = eth_promiscuous_disable,
1375         .allmulticast_enable  = eth_allmulticast_enable,
1376         .allmulticast_disable = eth_allmulticast_disable,
1377         .rx_queue_start     = eth_rx_queue_start,
1378         .rx_queue_stop      = eth_rx_queue_stop,
1379         .tx_queue_start     = eth_tx_queue_start,
1380         .tx_queue_stop      = eth_tx_queue_stop,
1381         .rx_queue_setup     = eth_rx_queue_setup,
1382         .tx_queue_setup     = eth_tx_queue_setup,
1383         .rx_queue_release   = eth_rx_queue_release,
1384         .tx_queue_release   = eth_tx_queue_release,
1385         .link_update        = eth_link_update,
1386         .stats_get          = eth_stats_get,
1387         .stats_reset        = eth_stats_reset,
1388         .mac_addr_set       = eth_mac_addr_set,
1389 };
1390
1391 /*
1392  * This function goes through sysfs and looks for an index of szedata2
1393  * device file (/dev/szedataIIX, where X is the index).
1394  *
1395  * @return
1396  *           0 on success
1397  *          -1 on error
1398  */
1399 static int
1400 get_szedata2_index(const struct rte_pci_addr *pcislot_addr, uint32_t *index)
1401 {
1402         DIR *dir;
1403         struct dirent *entry;
1404         int ret;
1405         uint32_t tmp_index;
1406         FILE *fd;
1407         char pcislot_path[PATH_MAX];
1408         uint32_t domain;
1409         uint8_t bus;
1410         uint8_t devid;
1411         uint8_t function;
1412
1413         dir = opendir("/sys/class/combo");
1414         if (dir == NULL)
1415                 return -1;
1416
1417         /*
1418          * Iterate through all combosixX directories.
1419          * When the value in /sys/class/combo/combosixX/device/pcislot
1420          * file is the location of the ethernet device dev, "X" is the
1421          * index of the device.
1422          */
1423         while ((entry = readdir(dir)) != NULL) {
1424                 ret = sscanf(entry->d_name, "combosix%u", &tmp_index);
1425                 if (ret != 1)
1426                         continue;
1427
1428                 snprintf(pcislot_path, PATH_MAX,
1429                         "/sys/class/combo/combosix%u/device/pcislot",
1430                         tmp_index);
1431
1432                 fd = fopen(pcislot_path, "r");
1433                 if (fd == NULL)
1434                         continue;
1435
1436                 ret = fscanf(fd, "%8" SCNx32 ":%2" SCNx8 ":%2" SCNx8 ".%" SCNx8,
1437                                 &domain, &bus, &devid, &function);
1438                 fclose(fd);
1439                 if (ret != 4)
1440                         continue;
1441
1442                 if (pcislot_addr->domain == domain &&
1443                                 pcislot_addr->bus == bus &&
1444                                 pcislot_addr->devid == devid &&
1445                                 pcislot_addr->function == function) {
1446                         *index = tmp_index;
1447                         closedir(dir);
1448                         return 0;
1449                 }
1450         }
1451
1452         closedir(dir);
1453         return -1;
1454 }
1455
1456 /**
1457  * @brief Initializes rte_eth_dev device.
1458  * @param dev Device to initialize.
1459  * @param pi Structure with info about DMA queues.
1460  * @return 0 on success, negative error code on error.
1461  */
1462 static int
1463 rte_szedata2_eth_dev_init(struct rte_eth_dev *dev, struct port_info *pi)
1464 {
1465         int ret;
1466         uint32_t szedata2_index;
1467         char name[PATH_MAX];
1468         struct rte_eth_dev_data *data = dev->data;
1469         struct pmd_internals *internals = (struct pmd_internals *)
1470                 data->dev_private;
1471         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
1472
1473         PMD_INIT_FUNC_TRACE();
1474
1475         PMD_INIT_LOG(INFO, "Initializing eth_dev %s (driver %s)", data->name,
1476                         RTE_STR(RTE_SZEDATA2_DRIVER_NAME));
1477
1478         /* Fill internal private structure. */
1479         internals->dev = dev;
1480         /* Get index of szedata2 device file and create path to device file */
1481         ret = get_szedata2_index(&pci_dev->addr, &szedata2_index);
1482         if (ret != 0) {
1483                 PMD_INIT_LOG(ERR, "Failed to get szedata2 device index!");
1484                 return -ENODEV;
1485         }
1486         snprintf(name, PATH_MAX, SZEDATA2_DEV_PATH_FMT, szedata2_index);
1487         internals->sze_dev_path = strdup(name);
1488         if (internals->sze_dev_path == NULL) {
1489                 PMD_INIT_LOG(ERR, "strdup() failed!");
1490                 return -ENOMEM;
1491         }
1492         PMD_INIT_LOG(INFO, "SZEDATA2 path: %s", internals->sze_dev_path);
1493         internals->max_rx_queues = pi->rx_count;
1494         internals->max_tx_queues = pi->tx_count;
1495         internals->rxq_base_id = pi->rx_base_id;
1496         internals->txq_base_id = pi->tx_base_id;
1497         PMD_INIT_LOG(INFO, "%u RX DMA channels from id %u",
1498                         internals->max_rx_queues, internals->rxq_base_id);
1499         PMD_INIT_LOG(INFO, "%u TX DMA channels from id %u",
1500                         internals->max_tx_queues, internals->txq_base_id);
1501
1502         /* Set rx, tx burst functions */
1503         if (data->scattered_rx == 1)
1504                 dev->rx_pkt_burst = eth_szedata2_rx_scattered;
1505         else
1506                 dev->rx_pkt_burst = eth_szedata2_rx;
1507         dev->tx_pkt_burst = eth_szedata2_tx;
1508
1509         /* Set function callbacks for Ethernet API */
1510         dev->dev_ops = &ops;
1511
1512         /* Get link state */
1513         eth_link_update(dev, 0);
1514
1515         /* Allocate space for one mac address */
1516         data->mac_addrs = rte_zmalloc(data->name, sizeof(struct rte_ether_addr),
1517                         RTE_CACHE_LINE_SIZE);
1518         if (data->mac_addrs == NULL) {
1519                 PMD_INIT_LOG(ERR, "Could not alloc space for MAC address!");
1520                 free(internals->sze_dev_path);
1521                 return -ENOMEM;
1522         }
1523
1524         rte_ether_addr_copy(&eth_addr, data->mac_addrs);
1525
1526         PMD_INIT_LOG(INFO, "%s device %s successfully initialized",
1527                         RTE_STR(RTE_SZEDATA2_DRIVER_NAME), data->name);
1528
1529         return 0;
1530 }
1531
1532 /**
1533  * @brief Unitializes rte_eth_dev device.
1534  * @param dev Device to uninitialize.
1535  * @return 0 on success, negative error code on error.
1536  */
1537 static int
1538 rte_szedata2_eth_dev_uninit(struct rte_eth_dev *dev)
1539 {
1540         struct pmd_internals *internals = (struct pmd_internals *)
1541                 dev->data->dev_private;
1542
1543         PMD_INIT_FUNC_TRACE();
1544
1545         free(internals->sze_dev_path);
1546
1547         PMD_DRV_LOG(INFO, "%s device %s successfully uninitialized",
1548                         RTE_STR(RTE_SZEDATA2_DRIVER_NAME), dev->data->name);
1549
1550         return 0;
1551 }
1552
1553 static const struct rte_pci_id rte_szedata2_pci_id_table[] = {
1554         {
1555                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
1556                                 PCI_DEVICE_ID_NETCOPE_COMBO80G)
1557         },
1558         {
1559                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
1560                                 PCI_DEVICE_ID_NETCOPE_COMBO100G)
1561         },
1562         {
1563                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
1564                                 PCI_DEVICE_ID_NETCOPE_COMBO100G2)
1565         },
1566         {
1567                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
1568                                 PCI_DEVICE_ID_NETCOPE_NFB200G2QL)
1569         },
1570         {
1571                 .vendor_id = 0,
1572         }
1573 };
1574
1575 /**
1576  * @brief Gets info about DMA queues for ports.
1577  * @param pci_dev PCI device structure.
1578  * @param port_count Pointer to variable set with number of ports.
1579  * @param pi Pointer to array of structures with info about DMA queues
1580  *           for ports.
1581  * @param max_ports Maximum number of ports.
1582  * @return 0 on success, negative error code on error.
1583  */
1584 static int
1585 get_port_info(struct rte_pci_device *pci_dev, unsigned int *port_count,
1586                 struct port_info *pi, unsigned int max_ports)
1587 {
1588         struct szedata *szedata_temp;
1589         char sze_dev_path[PATH_MAX];
1590         uint32_t szedata2_index;
1591         int ret;
1592         uint16_t max_rx_queues;
1593         uint16_t max_tx_queues;
1594
1595         if (max_ports == 0)
1596                 return -EINVAL;
1597
1598         memset(pi, 0, max_ports * sizeof(struct port_info));
1599         *port_count = 0;
1600
1601         /* Get index of szedata2 device file and create path to device file */
1602         ret = get_szedata2_index(&pci_dev->addr, &szedata2_index);
1603         if (ret != 0) {
1604                 PMD_INIT_LOG(ERR, "Failed to get szedata2 device index!");
1605                 return -ENODEV;
1606         }
1607         snprintf(sze_dev_path, PATH_MAX, SZEDATA2_DEV_PATH_FMT, szedata2_index);
1608
1609         /*
1610          * Get number of available DMA RX and TX channels, which is maximum
1611          * number of queues that can be created.
1612          */
1613         szedata_temp = szedata_open(sze_dev_path);
1614         if (szedata_temp == NULL) {
1615                 PMD_INIT_LOG(ERR, "szedata_open(%s) failed", sze_dev_path);
1616                 return -EINVAL;
1617         }
1618         max_rx_queues = szedata_ifaces_available(szedata_temp, SZE2_DIR_RX);
1619         max_tx_queues = szedata_ifaces_available(szedata_temp, SZE2_DIR_TX);
1620         PMD_INIT_LOG(INFO, "Available DMA channels RX: %u TX: %u",
1621                         max_rx_queues, max_tx_queues);
1622         if (max_rx_queues > RTE_ETH_SZEDATA2_MAX_RX_QUEUES) {
1623                 PMD_INIT_LOG(ERR, "%u RX queues exceeds supported number %u",
1624                                 max_rx_queues, RTE_ETH_SZEDATA2_MAX_RX_QUEUES);
1625                 szedata_close(szedata_temp);
1626                 return -EINVAL;
1627         }
1628         if (max_tx_queues > RTE_ETH_SZEDATA2_MAX_TX_QUEUES) {
1629                 PMD_INIT_LOG(ERR, "%u TX queues exceeds supported number %u",
1630                                 max_tx_queues, RTE_ETH_SZEDATA2_MAX_TX_QUEUES);
1631                 szedata_close(szedata_temp);
1632                 return -EINVAL;
1633         }
1634
1635         if (pci_dev->id.device_id == PCI_DEVICE_ID_NETCOPE_NFB200G2QL) {
1636                 unsigned int i;
1637                 unsigned int rx_queues = max_rx_queues / max_ports;
1638                 unsigned int tx_queues = max_tx_queues / max_ports;
1639
1640                 /*
1641                  * Number of queues reported by szedata_ifaces_available()
1642                  * is the number of all queues from all DMA controllers which
1643                  * may reside at different numa locations.
1644                  * All queues from the same DMA controller have the same numa
1645                  * node.
1646                  * Numa node from the first queue of each DMA controller is
1647                  * retrieved.
1648                  * If the numa node differs from the numa node of the queues
1649                  * from the previous DMA controller the queues are assigned
1650                  * to the next port.
1651                  */
1652
1653                 for (i = 0; i < max_ports; i++) {
1654                         int numa_rx = szedata_get_area_numa_node(szedata_temp,
1655                                 SZE2_DIR_RX, rx_queues * i);
1656                         int numa_tx = szedata_get_area_numa_node(szedata_temp,
1657                                 SZE2_DIR_TX, tx_queues * i);
1658                         unsigned int port_rx_queues = numa_rx != -1 ?
1659                                 rx_queues : 0;
1660                         unsigned int port_tx_queues = numa_tx != -1 ?
1661                                 tx_queues : 0;
1662                         PMD_INIT_LOG(DEBUG, "%u rx queues from id %u, numa %d",
1663                                         rx_queues, rx_queues * i, numa_rx);
1664                         PMD_INIT_LOG(DEBUG, "%u tx queues from id %u, numa %d",
1665                                         tx_queues, tx_queues * i, numa_tx);
1666
1667                         if (port_rx_queues != 0 && port_tx_queues != 0 &&
1668                                         numa_rx != numa_tx) {
1669                                 PMD_INIT_LOG(ERR, "RX queue %u numa %d differs "
1670                                                 "from TX queue %u numa %d "
1671                                                 "unexpectedly",
1672                                                 rx_queues * i, numa_rx,
1673                                                 tx_queues * i, numa_tx);
1674                                 szedata_close(szedata_temp);
1675                                 return -EINVAL;
1676                         } else if (port_rx_queues == 0 && port_tx_queues == 0) {
1677                                 continue;
1678                         } else {
1679                                 unsigned int j;
1680                                 unsigned int current = *port_count;
1681                                 int port_numa = port_rx_queues != 0 ?
1682                                         numa_rx : numa_tx;
1683
1684                                 for (j = 0; j < *port_count; j++) {
1685                                         if (pi[j].numa_node ==
1686                                                         port_numa) {
1687                                                 current = j;
1688                                                 break;
1689                                         }
1690                                 }
1691                                 if (pi[current].rx_count == 0 &&
1692                                                 pi[current].tx_count == 0) {
1693                                         pi[current].rx_base_id = rx_queues * i;
1694                                         pi[current].tx_base_id = tx_queues * i;
1695                                         (*port_count)++;
1696                                 } else if ((rx_queues * i !=
1697                                                 pi[current].rx_base_id +
1698                                                 pi[current].rx_count) ||
1699                                                 (tx_queues * i !=
1700                                                  pi[current].tx_base_id +
1701                                                  pi[current].tx_count)) {
1702                                         PMD_INIT_LOG(ERR, "Queue ids does not "
1703                                                         "fulfill constraints");
1704                                         szedata_close(szedata_temp);
1705                                         return -EINVAL;
1706                                 }
1707                                 pi[current].rx_count += port_rx_queues;
1708                                 pi[current].tx_count += port_tx_queues;
1709                                 pi[current].numa_node = port_numa;
1710                         }
1711                 }
1712         } else {
1713                 pi[0].rx_count = max_rx_queues;
1714                 pi[0].tx_count = max_tx_queues;
1715                 pi[0].numa_node = pci_dev->device.numa_node;
1716                 *port_count = 1;
1717         }
1718
1719         szedata_close(szedata_temp);
1720         return 0;
1721 }
1722
1723 /**
1724  * @brief Allocates rte_eth_dev device.
1725  * @param pci_dev Corresponding PCI device.
1726  * @param numa_node NUMA node on which device is allocated.
1727  * @param port_no Id of rte_eth_device created on PCI device pci_dev.
1728  * @return Pointer to allocated device or NULL on error.
1729  */
1730 static struct rte_eth_dev *
1731 szedata2_eth_dev_allocate(struct rte_pci_device *pci_dev, int numa_node,
1732                 unsigned int port_no)
1733 {
1734         struct rte_eth_dev *eth_dev;
1735         char name[RTE_ETH_NAME_MAX_LEN];
1736
1737         PMD_INIT_FUNC_TRACE();
1738
1739         snprintf(name, RTE_ETH_NAME_MAX_LEN, "%s"
1740                         SZEDATA2_ETH_DEV_NAME_SUFFIX_FMT,
1741                         pci_dev->device.name, port_no);
1742         PMD_INIT_LOG(DEBUG, "Allocating eth_dev %s", name);
1743
1744         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1745                 eth_dev = rte_eth_dev_allocate(name);
1746                 if (!eth_dev)
1747                         return NULL;
1748
1749                 eth_dev->data->dev_private = rte_zmalloc_socket(name,
1750                         sizeof(struct pmd_internals), RTE_CACHE_LINE_SIZE,
1751                         numa_node);
1752                 if (!eth_dev->data->dev_private) {
1753                         rte_eth_dev_release_port(eth_dev);
1754                         return NULL;
1755                 }
1756         } else {
1757                 eth_dev = rte_eth_dev_attach_secondary(name);
1758                 if (!eth_dev)
1759                         return NULL;
1760         }
1761
1762         eth_dev->device = &pci_dev->device;
1763         rte_eth_copy_pci_info(eth_dev, pci_dev);
1764         eth_dev->data->numa_node = numa_node;
1765         return eth_dev;
1766 }
1767
1768 /**
1769  * @brief Releases interval of rte_eth_dev devices from array.
1770  * @param eth_devs Array of pointers to rte_eth_dev devices.
1771  * @param from Index in array eth_devs to start with.
1772  * @param to Index in array right after the last element to release.
1773  *
1774  * Used for releasing at failed initialization.
1775  */
1776 static void
1777 szedata2_eth_dev_release_interval(struct rte_eth_dev **eth_devs,
1778                 unsigned int from, unsigned int to)
1779 {
1780         unsigned int i;
1781
1782         PMD_INIT_FUNC_TRACE();
1783
1784         for (i = from; i < to; i++) {
1785                 rte_szedata2_eth_dev_uninit(eth_devs[i]);
1786                 rte_eth_dev_pci_release(eth_devs[i]);
1787         }
1788 }
1789
1790 /**
1791  * @brief Callback .probe for struct rte_pci_driver.
1792  */
1793 static int szedata2_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1794         struct rte_pci_device *pci_dev)
1795 {
1796         struct port_info port_info[SZEDATA2_MAX_PORTS];
1797         unsigned int port_count;
1798         int ret;
1799         unsigned int i;
1800         struct pci_dev_list_entry *list_entry;
1801         struct rte_eth_dev *eth_devs[SZEDATA2_MAX_PORTS] = {NULL,};
1802
1803         PMD_INIT_FUNC_TRACE();
1804
1805         ret = get_port_info(pci_dev, &port_count, port_info,
1806                         SZEDATA2_MAX_PORTS);
1807         if (ret != 0)
1808                 return ret;
1809
1810         if (port_count == 0) {
1811                 PMD_INIT_LOG(ERR, "No available ports!");
1812                 return -ENODEV;
1813         }
1814
1815         list_entry = rte_zmalloc(NULL, sizeof(struct pci_dev_list_entry),
1816                         RTE_CACHE_LINE_SIZE);
1817         if (list_entry == NULL) {
1818                 PMD_INIT_LOG(ERR, "rte_zmalloc() failed!");
1819                 return -ENOMEM;
1820         }
1821
1822         for (i = 0; i < port_count; i++) {
1823                 eth_devs[i] = szedata2_eth_dev_allocate(pci_dev,
1824                                 port_info[i].numa_node, i);
1825                 if (eth_devs[i] == NULL) {
1826                         PMD_INIT_LOG(ERR, "Failed to alloc eth_dev for port %u",
1827                                         i);
1828                         szedata2_eth_dev_release_interval(eth_devs, 0, i);
1829                         rte_free(list_entry);
1830                         return -ENOMEM;
1831                 }
1832
1833                 ret = rte_szedata2_eth_dev_init(eth_devs[i], &port_info[i]);
1834                 if (ret != 0) {
1835                         PMD_INIT_LOG(ERR, "Failed to init eth_dev for port %u",
1836                                         i);
1837                         rte_eth_dev_pci_release(eth_devs[i]);
1838                         szedata2_eth_dev_release_interval(eth_devs, 0, i);
1839                         rte_free(list_entry);
1840                         return ret;
1841                 }
1842
1843                 rte_eth_dev_probing_finish(eth_devs[i]);
1844         }
1845
1846         /*
1847          * Add pci_dev to list of PCI devices for this driver
1848          * which is used at remove callback to release all created eth_devs.
1849          */
1850         list_entry->pci_dev = pci_dev;
1851         list_entry->port_count = port_count;
1852         LIST_INSERT_HEAD(&szedata2_pci_dev_list, list_entry, next);
1853         return 0;
1854 }
1855
1856 /**
1857  * @brief Callback .remove for struct rte_pci_driver.
1858  */
1859 static int szedata2_eth_pci_remove(struct rte_pci_device *pci_dev)
1860 {
1861         unsigned int i;
1862         unsigned int port_count;
1863         char name[RTE_ETH_NAME_MAX_LEN];
1864         struct rte_eth_dev *eth_dev;
1865         int ret;
1866         int retval = 0;
1867         bool found = false;
1868         struct pci_dev_list_entry *list_entry = NULL;
1869
1870         PMD_INIT_FUNC_TRACE();
1871
1872         LIST_FOREACH(list_entry, &szedata2_pci_dev_list, next) {
1873                 if (list_entry->pci_dev == pci_dev) {
1874                         port_count = list_entry->port_count;
1875                         found = true;
1876                         break;
1877                 }
1878         }
1879         LIST_REMOVE(list_entry, next);
1880         rte_free(list_entry);
1881
1882         if (!found) {
1883                 PMD_DRV_LOG(ERR, "PCI device " PCI_PRI_FMT " not found",
1884                                 pci_dev->addr.domain, pci_dev->addr.bus,
1885                                 pci_dev->addr.devid, pci_dev->addr.function);
1886                 return -ENODEV;
1887         }
1888
1889         for (i = 0; i < port_count; i++) {
1890                 snprintf(name, RTE_ETH_NAME_MAX_LEN, "%s"
1891                                 SZEDATA2_ETH_DEV_NAME_SUFFIX_FMT,
1892                                 pci_dev->device.name, i);
1893                 PMD_DRV_LOG(DEBUG, "Removing eth_dev %s", name);
1894                 eth_dev = rte_eth_dev_allocated(name);
1895                 if (!eth_dev) {
1896                         PMD_DRV_LOG(ERR, "eth_dev %s not found", name);
1897                         retval = retval ? retval : -ENODEV;
1898                 }
1899
1900                 ret = rte_szedata2_eth_dev_uninit(eth_dev);
1901                 if (ret != 0) {
1902                         PMD_DRV_LOG(ERR, "eth_dev %s uninit failed", name);
1903                         retval = retval ? retval : ret;
1904                 }
1905
1906                 rte_eth_dev_pci_release(eth_dev);
1907         }
1908
1909         return retval;
1910 }
1911
1912 static struct rte_pci_driver szedata2_eth_driver = {
1913         .id_table = rte_szedata2_pci_id_table,
1914         .probe = szedata2_eth_pci_probe,
1915         .remove = szedata2_eth_pci_remove,
1916 };
1917
1918 RTE_PMD_REGISTER_PCI(RTE_SZEDATA2_DRIVER_NAME, szedata2_eth_driver);
1919 RTE_PMD_REGISTER_PCI_TABLE(RTE_SZEDATA2_DRIVER_NAME, rte_szedata2_pci_id_table);
1920 RTE_PMD_REGISTER_KMOD_DEP(RTE_SZEDATA2_DRIVER_NAME,
1921         "* combo6core & combov3 & szedata2 & ( szedata2_cv3 | szedata2_cv3_fdt )");
1922
1923 RTE_INIT(szedata2_init_log)
1924 {
1925         szedata2_logtype_init = rte_log_register("pmd.net.szedata2.init");
1926         if (szedata2_logtype_init >= 0)
1927                 rte_log_set_level(szedata2_logtype_init, RTE_LOG_NOTICE);
1928         szedata2_logtype_driver = rte_log_register("pmd.net.szedata2.driver");
1929         if (szedata2_logtype_driver >= 0)
1930                 rte_log_set_level(szedata2_logtype_driver, RTE_LOG_NOTICE);
1931 }