drivers/net/szedata2/rte_eth_szedata2.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (c) 2015 - 2016 CESNET
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of CESNET nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdint.h>
  35 #include <unistd.h>
  36 #include <stdbool.h>
  37 #include <err.h>
  38 #include <sys/types.h>
  39 #include <dirent.h>
  40 #include <sys/stat.h>
  41 #include <fcntl.h>
  42 #include <sys/mman.h>
  43
  44 #include <libsze2.h>
  45
  46 #include <rte_mbuf.h>
  47 #include <rte_ethdev.h>
  48 #include <rte_malloc.h>
  49 #include <rte_memcpy.h>
  50 #include <rte_kvargs.h>
  51 #include <rte_dev.h>
  52 #include <rte_atomic.h>
  53
  54 #include "rte_eth_szedata2.h"
  55
  56 #define RTE_ETH_SZEDATA2_MAX_RX_QUEUES 32
  57 #define RTE_ETH_SZEDATA2_MAX_TX_QUEUES 32
  58 #define RTE_ETH_SZEDATA2_TX_LOCK_SIZE (32 * 1024 * 1024)
  59
  60 /**
  61  * size of szedata2_packet header with alignment
  62  */
  63 #define RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED 8
  64
  65 #define RTE_SZEDATA2_DRIVER_NAME net_szedata2
  66 #define RTE_SZEDATA2_PCI_DRIVER_NAME "rte_szedata2_pmd"
  67
  68 #define SZEDATA2_DEV_PATH_FMT "/dev/szedataII%u"
  69
  70 struct szedata2_rx_queue {
  71         struct szedata *sze;
  72         uint8_t rx_channel;
  73         uint8_t in_port;
  74         struct rte_mempool *mb_pool;
  75         volatile uint64_t rx_pkts;
  76         volatile uint64_t rx_bytes;
  77         volatile uint64_t err_pkts;
  78 };
  79
  80 struct szedata2_tx_queue {
  81         struct szedata *sze;
  82         uint8_t tx_channel;
  83         volatile uint64_t tx_pkts;
  84         volatile uint64_t tx_bytes;
  85         volatile uint64_t err_pkts;
  86 };
  87
  88 struct pmd_internals {
  89         struct szedata2_rx_queue rx_queue[RTE_ETH_SZEDATA2_MAX_RX_QUEUES];
  90         struct szedata2_tx_queue tx_queue[RTE_ETH_SZEDATA2_MAX_TX_QUEUES];
  91         uint16_t max_rx_queues;
  92         uint16_t max_tx_queues;
  93         char sze_dev[PATH_MAX];
  94 };
  95
  96 static struct ether_addr eth_addr = {
  97         .addr_bytes = { 0x00, 0x11, 0x17, 0x00, 0x00, 0x00 }
  98 };
  99
 100 static uint16_t
 101 eth_szedata2_rx(void *queue,
 102                 struct rte_mbuf **bufs,
 103                 uint16_t nb_pkts)
 104 {
 105         unsigned int i;
 106         struct rte_mbuf *mbuf;
 107         struct szedata2_rx_queue *sze_q = queue;
 108         struct rte_pktmbuf_pool_private *mbp_priv;
 109         uint16_t num_rx = 0;
 110         uint16_t buf_size;
 111         uint16_t sg_size;
 112         uint16_t hw_size;
 113         uint16_t packet_size;
 114         uint64_t num_bytes = 0;
 115         struct szedata *sze = sze_q->sze;
 116         uint8_t *header_ptr = NULL; /* header of packet */
 117         uint8_t *packet_ptr1 = NULL;
 118         uint8_t *packet_ptr2 = NULL;
 119         uint16_t packet_len1 = 0;
 120         uint16_t packet_len2 = 0;
 121         uint16_t hw_data_align;
 122
 123         if (unlikely(sze_q->sze == NULL || nb_pkts == 0))
 124                 return 0;
 125
 126         /*
 127          * Reads the given number of packets from szedata2 channel given
 128          * by queue and copies the packet data into a newly allocated mbuf
 129          * to return.
 130          */
 131         for (i = 0; i < nb_pkts; i++) {
 132                 mbuf = rte_pktmbuf_alloc(sze_q->mb_pool);
 133
 134                 if (unlikely(mbuf == NULL))
 135                         break;
 136
 137                 /* get the next sze packet */
 138                 if (sze->ct_rx_lck != NULL && !sze->ct_rx_rem_bytes &&
 139                                 sze->ct_rx_lck->next == NULL) {
 140                         /* unlock old data */
 141                         szedata_rx_unlock_data(sze_q->sze, sze->ct_rx_lck_orig);
 142                         sze->ct_rx_lck_orig = NULL;
 143                         sze->ct_rx_lck = NULL;
 144                 }
 145
 146                 if (!sze->ct_rx_rem_bytes && sze->ct_rx_lck_orig == NULL) {
 147                         /* nothing to read, lock new data */
 148                         sze->ct_rx_lck = szedata_rx_lock_data(sze_q->sze, ~0U);
 149                         sze->ct_rx_lck_orig = sze->ct_rx_lck;
 150
 151                         if (sze->ct_rx_lck == NULL) {
 152                                 /* nothing to lock */
 153                                 rte_pktmbuf_free(mbuf);
 154                                 break;
 155                         }
 156
 157                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 158                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len;
 159
 160                         if (!sze->ct_rx_rem_bytes) {
 161                                 rte_pktmbuf_free(mbuf);
 162                                 break;
 163                         }
 164                 }
 165
 166                 if (sze->ct_rx_rem_bytes < RTE_SZE2_PACKET_HEADER_SIZE) {
 167                         /*
 168                          * cut in header
 169                          * copy parts of header to merge buffer
 170                          */
 171                         if (sze->ct_rx_lck->next == NULL) {
 172                                 rte_pktmbuf_free(mbuf);
 173                                 break;
 174                         }
 175
 176                         /* copy first part of header */
 177                         rte_memcpy(sze->ct_rx_buffer, sze->ct_rx_cur_ptr,
 178                                         sze->ct_rx_rem_bytes);
 179
 180                         /* copy second part of header */
 181                         sze->ct_rx_lck = sze->ct_rx_lck->next;
 182                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 183                         rte_memcpy(sze->ct_rx_buffer + sze->ct_rx_rem_bytes,
 184                                 sze->ct_rx_cur_ptr,
 185                                 RTE_SZE2_PACKET_HEADER_SIZE -
 186                                 sze->ct_rx_rem_bytes);
 187
 188                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE -
 189                                 sze->ct_rx_rem_bytes;
 190                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 191                                 RTE_SZE2_PACKET_HEADER_SIZE +
 192                                 sze->ct_rx_rem_bytes;
 193
 194                         header_ptr = (uint8_t *)sze->ct_rx_buffer;
 195                 } else {
 196                         /* not cut */
 197                         header_ptr = (uint8_t *)sze->ct_rx_cur_ptr;
 198                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE;
 199                         sze->ct_rx_rem_bytes -= RTE_SZE2_PACKET_HEADER_SIZE;
 200                 }
 201
 202                 sg_size = le16toh(*((uint16_t *)header_ptr));
 203                 hw_size = le16toh(*(((uint16_t *)header_ptr) + 1));
 204                 packet_size = sg_size -
 205                         RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size);
 206
 207
 208                 /* checks if packet all right */
 209                 if (!sg_size)
 210                         errx(5, "Zero segsize");
 211
 212                 /* check sg_size and hwsize */
 213                 if (hw_size > sg_size - RTE_SZE2_PACKET_HEADER_SIZE) {
 214                         errx(10, "Hwsize bigger than expected. Segsize: %d, "
 215                                 "hwsize: %d", sg_size, hw_size);
 216                 }
 217
 218                 hw_data_align =
 219                         RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size) -
 220                         RTE_SZE2_PACKET_HEADER_SIZE;
 221
 222                 if (sze->ct_rx_rem_bytes >=
 223                                 (uint16_t)(sg_size -
 224                                 RTE_SZE2_PACKET_HEADER_SIZE)) {
 225                         /* no cut */
 226                         /* one packet ready - go to another */
 227                         packet_ptr1 = sze->ct_rx_cur_ptr + hw_data_align;
 228                         packet_len1 = packet_size;
 229                         packet_ptr2 = NULL;
 230                         packet_len2 = 0;
 231
 232                         sze->ct_rx_cur_ptr += RTE_SZE2_ALIGN8(sg_size) -
 233                                 RTE_SZE2_PACKET_HEADER_SIZE;
 234                         sze->ct_rx_rem_bytes -= RTE_SZE2_ALIGN8(sg_size) -
 235                                 RTE_SZE2_PACKET_HEADER_SIZE;
 236                 } else {
 237                         /* cut in data */
 238                         if (sze->ct_rx_lck->next == NULL) {
 239                                 errx(6, "Need \"next\" lock, "
 240                                         "but it is missing: %u",
 241                                         sze->ct_rx_rem_bytes);
 242                         }
 243
 244                         /* skip hw data */
 245                         if (sze->ct_rx_rem_bytes <= hw_data_align) {
 246                                 uint16_t rem_size = hw_data_align -
 247                                         sze->ct_rx_rem_bytes;
 248
 249                                 /* MOVE to next lock */
 250                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 251                                 sze->ct_rx_cur_ptr =
 252                                         (void *)(((uint8_t *)
 253                                         (sze->ct_rx_lck->start)) + rem_size);
 254
 255                                 packet_ptr1 = sze->ct_rx_cur_ptr;
 256                                 packet_len1 = packet_size;
 257                                 packet_ptr2 = NULL;
 258                                 packet_len2 = 0;
 259
 260                                 sze->ct_rx_cur_ptr +=
 261                                         RTE_SZE2_ALIGN8(packet_size);
 262                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 263                                         rem_size - RTE_SZE2_ALIGN8(packet_size);
 264                         } else {
 265                                 /* get pointer and length from first part */
 266                                 packet_ptr1 = sze->ct_rx_cur_ptr +
 267                                         hw_data_align;
 268                                 packet_len1 = sze->ct_rx_rem_bytes -
 269                                         hw_data_align;
 270
 271                                 /* MOVE to next lock */
 272                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 273                                 sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 274
 275                                 /* get pointer and length from second part */
 276                                 packet_ptr2 = sze->ct_rx_cur_ptr;
 277                                 packet_len2 = packet_size - packet_len1;
 278
 279                                 sze->ct_rx_cur_ptr +=
 280                                         RTE_SZE2_ALIGN8(packet_size) -
 281                                         packet_len1;
 282                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 283                                         (RTE_SZE2_ALIGN8(packet_size) -
 284                                          packet_len1);
 285                         }
 286                 }
 287
 288                 if (unlikely(packet_ptr1 == NULL)) {
 289                         rte_pktmbuf_free(mbuf);
 290                         break;
 291                 }
 292
 293                 /* get the space available for data in the mbuf */
 294                 mbp_priv = rte_mempool_get_priv(sze_q->mb_pool);
 295                 buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
 296                                 RTE_PKTMBUF_HEADROOM);
 297
 298                 if (packet_size <= buf_size) {
 299                         /* sze packet will fit in one mbuf, go ahead and copy */
 300                         rte_memcpy(rte_pktmbuf_mtod(mbuf, void *),
 301                                         packet_ptr1, packet_len1);
 302                         if (packet_ptr2 != NULL) {
 303                                 rte_memcpy((void *)(rte_pktmbuf_mtod(mbuf,
 304                                         uint8_t *) + packet_len1),
 305                                         packet_ptr2, packet_len2);
 306                         }
 307                         mbuf->data_len = (uint16_t)packet_size;
 308
 309                         mbuf->pkt_len = packet_size;
 310                         mbuf->port = sze_q->in_port;
 311                         bufs[num_rx] = mbuf;
 312                         num_rx++;
 313                         num_bytes += packet_size;
 314                 } else {
 315                         /*
 316                          * sze packet will not fit in one mbuf,
 317                          * scattered mode is not enabled, drop packet
 318                          */
 319                         RTE_LOG(ERR, PMD,
 320                                 "SZE segment %d bytes will not fit in one mbuf "
 321                                 "(%d bytes), scattered mode is not enabled, "
 322                                 "drop packet!!\n",
 323                                 packet_size, buf_size);
 324                         rte_pktmbuf_free(mbuf);
 325                 }
 326         }
 327
 328         sze_q->rx_pkts += num_rx;
 329         sze_q->rx_bytes += num_bytes;
 330         return num_rx;
 331 }
 332
 333 static uint16_t
 334 eth_szedata2_rx_scattered(void *queue,
 335                 struct rte_mbuf **bufs,
 336                 uint16_t nb_pkts)
 337 {
 338         unsigned int i;
 339         struct rte_mbuf *mbuf;
 340         struct szedata2_rx_queue *sze_q = queue;
 341         struct rte_pktmbuf_pool_private *mbp_priv;
 342         uint16_t num_rx = 0;
 343         uint16_t buf_size;
 344         uint16_t sg_size;
 345         uint16_t hw_size;
 346         uint16_t packet_size;
 347         uint64_t num_bytes = 0;
 348         struct szedata *sze = sze_q->sze;
 349         uint8_t *header_ptr = NULL; /* header of packet */
 350         uint8_t *packet_ptr1 = NULL;
 351         uint8_t *packet_ptr2 = NULL;
 352         uint16_t packet_len1 = 0;
 353         uint16_t packet_len2 = 0;
 354         uint16_t hw_data_align;
 355
 356         if (unlikely(sze_q->sze == NULL || nb_pkts == 0))
 357                 return 0;
 358
 359         /*
 360          * Reads the given number of packets from szedata2 channel given
 361          * by queue and copies the packet data into a newly allocated mbuf
 362          * to return.
 363          */
 364         for (i = 0; i < nb_pkts; i++) {
 365                 const struct szedata_lock *ct_rx_lck_backup;
 366                 unsigned int ct_rx_rem_bytes_backup;
 367                 unsigned char *ct_rx_cur_ptr_backup;
 368
 369                 /* get the next sze packet */
 370                 if (sze->ct_rx_lck != NULL && !sze->ct_rx_rem_bytes &&
 371                                 sze->ct_rx_lck->next == NULL) {
 372                         /* unlock old data */
 373                         szedata_rx_unlock_data(sze_q->sze, sze->ct_rx_lck_orig);
 374                         sze->ct_rx_lck_orig = NULL;
 375                         sze->ct_rx_lck = NULL;
 376                 }
 377
 378                 /*
 379                  * Store items from sze structure which can be changed
 380                  * before mbuf allocating. Use these items in case of mbuf
 381                  * allocating failure.
 382                  */
 383                 ct_rx_lck_backup = sze->ct_rx_lck;
 384                 ct_rx_rem_bytes_backup = sze->ct_rx_rem_bytes;
 385                 ct_rx_cur_ptr_backup = sze->ct_rx_cur_ptr;
 386
 387                 if (!sze->ct_rx_rem_bytes && sze->ct_rx_lck_orig == NULL) {
 388                         /* nothing to read, lock new data */
 389                         sze->ct_rx_lck = szedata_rx_lock_data(sze_q->sze, ~0U);
 390                         sze->ct_rx_lck_orig = sze->ct_rx_lck;
 391
 392                         /*
 393                          * Backup items from sze structure must be updated
 394                          * after locking to contain pointers to new locks.
 395                          */
 396                         ct_rx_lck_backup = sze->ct_rx_lck;
 397                         ct_rx_rem_bytes_backup = sze->ct_rx_rem_bytes;
 398                         ct_rx_cur_ptr_backup = sze->ct_rx_cur_ptr;
 399
 400                         if (sze->ct_rx_lck == NULL)
 401                                 /* nothing to lock */
 402                                 break;
 403
 404                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 405                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len;
 406
 407                         if (!sze->ct_rx_rem_bytes)
 408                                 break;
 409                 }
 410
 411                 if (sze->ct_rx_rem_bytes < RTE_SZE2_PACKET_HEADER_SIZE) {
 412                         /*
 413                          * cut in header - copy parts of header to merge buffer
 414                          */
 415                         if (sze->ct_rx_lck->next == NULL)
 416                                 break;
 417
 418                         /* copy first part of header */
 419                         rte_memcpy(sze->ct_rx_buffer, sze->ct_rx_cur_ptr,
 420                                         sze->ct_rx_rem_bytes);
 421
 422                         /* copy second part of header */
 423                         sze->ct_rx_lck = sze->ct_rx_lck->next;
 424                         sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 425                         rte_memcpy(sze->ct_rx_buffer + sze->ct_rx_rem_bytes,
 426                                 sze->ct_rx_cur_ptr,
 427                                 RTE_SZE2_PACKET_HEADER_SIZE -
 428                                 sze->ct_rx_rem_bytes);
 429
 430                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE -
 431                                 sze->ct_rx_rem_bytes;
 432                         sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 433                                 RTE_SZE2_PACKET_HEADER_SIZE +
 434                                 sze->ct_rx_rem_bytes;
 435
 436                         header_ptr = (uint8_t *)sze->ct_rx_buffer;
 437                 } else {
 438                         /* not cut */
 439                         header_ptr = (uint8_t *)sze->ct_rx_cur_ptr;
 440                         sze->ct_rx_cur_ptr += RTE_SZE2_PACKET_HEADER_SIZE;
 441                         sze->ct_rx_rem_bytes -= RTE_SZE2_PACKET_HEADER_SIZE;
 442                 }
 443
 444                 sg_size = le16toh(*((uint16_t *)header_ptr));
 445                 hw_size = le16toh(*(((uint16_t *)header_ptr) + 1));
 446                 packet_size = sg_size -
 447                         RTE_SZE2_ALIGN8(RTE_SZE2_PACKET_HEADER_SIZE + hw_size);
 448
 449
 450                 /* checks if packet all right */
 451                 if (!sg_size)
 452                         errx(5, "Zero segsize");
 453
 454                 /* check sg_size and hwsize */
 455                 if (hw_size > sg_size - RTE_SZE2_PACKET_HEADER_SIZE) {
 456                         errx(10, "Hwsize bigger than expected. Segsize: %d, "
 457                                         "hwsize: %d", sg_size, hw_size);
 458                 }
 459
 460                 hw_data_align =
 461                         RTE_SZE2_ALIGN8((RTE_SZE2_PACKET_HEADER_SIZE +
 462                         hw_size)) - RTE_SZE2_PACKET_HEADER_SIZE;
 463
 464                 if (sze->ct_rx_rem_bytes >=
 465                                 (uint16_t)(sg_size -
 466                                 RTE_SZE2_PACKET_HEADER_SIZE)) {
 467                         /* no cut */
 468                         /* one packet ready - go to another */
 469                         packet_ptr1 = sze->ct_rx_cur_ptr + hw_data_align;
 470                         packet_len1 = packet_size;
 471                         packet_ptr2 = NULL;
 472                         packet_len2 = 0;
 473
 474                         sze->ct_rx_cur_ptr += RTE_SZE2_ALIGN8(sg_size) -
 475                                 RTE_SZE2_PACKET_HEADER_SIZE;
 476                         sze->ct_rx_rem_bytes -= RTE_SZE2_ALIGN8(sg_size) -
 477                                 RTE_SZE2_PACKET_HEADER_SIZE;
 478                 } else {
 479                         /* cut in data */
 480                         if (sze->ct_rx_lck->next == NULL) {
 481                                 errx(6, "Need \"next\" lock, but it is "
 482                                         "missing: %u", sze->ct_rx_rem_bytes);
 483                         }
 484
 485                         /* skip hw data */
 486                         if (sze->ct_rx_rem_bytes <= hw_data_align) {
 487                                 uint16_t rem_size = hw_data_align -
 488                                         sze->ct_rx_rem_bytes;
 489
 490                                 /* MOVE to next lock */
 491                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 492                                 sze->ct_rx_cur_ptr =
 493                                         (void *)(((uint8_t *)
 494                                         (sze->ct_rx_lck->start)) + rem_size);
 495
 496                                 packet_ptr1 = sze->ct_rx_cur_ptr;
 497                                 packet_len1 = packet_size;
 498                                 packet_ptr2 = NULL;
 499                                 packet_len2 = 0;
 500
 501                                 sze->ct_rx_cur_ptr +=
 502                                         RTE_SZE2_ALIGN8(packet_size);
 503                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 504                                         rem_size - RTE_SZE2_ALIGN8(packet_size);
 505                         } else {
 506                                 /* get pointer and length from first part */
 507                                 packet_ptr1 = sze->ct_rx_cur_ptr +
 508                                         hw_data_align;
 509                                 packet_len1 = sze->ct_rx_rem_bytes -
 510                                         hw_data_align;
 511
 512                                 /* MOVE to next lock */
 513                                 sze->ct_rx_lck = sze->ct_rx_lck->next;
 514                                 sze->ct_rx_cur_ptr = sze->ct_rx_lck->start;
 515
 516                                 /* get pointer and length from second part */
 517                                 packet_ptr2 = sze->ct_rx_cur_ptr;
 518                                 packet_len2 = packet_size - packet_len1;
 519
 520                                 sze->ct_rx_cur_ptr +=
 521                                         RTE_SZE2_ALIGN8(packet_size) -
 522                                         packet_len1;
 523                                 sze->ct_rx_rem_bytes = sze->ct_rx_lck->len -
 524                                         (RTE_SZE2_ALIGN8(packet_size) -
 525                                          packet_len1);
 526                         }
 527                 }
 528
 529                 if (unlikely(packet_ptr1 == NULL))
 530                         break;
 531
 532                 mbuf = rte_pktmbuf_alloc(sze_q->mb_pool);
 533
 534                 if (unlikely(mbuf == NULL)) {
 535                         /*
 536                          * Restore items from sze structure to state after
 537                          * unlocking (eventually locking).
 538                          */
 539                         sze->ct_rx_lck = ct_rx_lck_backup;
 540                         sze->ct_rx_rem_bytes = ct_rx_rem_bytes_backup;
 541                         sze->ct_rx_cur_ptr = ct_rx_cur_ptr_backup;
 542                         break;
 543                 }
 544
 545                 /* get the space available for data in the mbuf */
 546                 mbp_priv = rte_mempool_get_priv(sze_q->mb_pool);
 547                 buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size -
 548                                 RTE_PKTMBUF_HEADROOM);
 549
 550                 if (packet_size <= buf_size) {
 551                         /* sze packet will fit in one mbuf, go ahead and copy */
 552                         rte_memcpy(rte_pktmbuf_mtod(mbuf, void *),
 553                                         packet_ptr1, packet_len1);
 554                         if (packet_ptr2 != NULL) {
 555                                 rte_memcpy((void *)
 556                                         (rte_pktmbuf_mtod(mbuf, uint8_t *) +
 557                                         packet_len1), packet_ptr2, packet_len2);
 558                         }
 559                         mbuf->data_len = (uint16_t)packet_size;
 560                 } else {
 561                         /*
 562                          * sze packet will not fit in one mbuf,
 563                          * scatter packet into more mbufs
 564                          */
 565                         struct rte_mbuf *m = mbuf;
 566                         uint16_t len = rte_pktmbuf_tailroom(mbuf);
 567
 568                         /* copy first part of packet */
 569                         /* fill first mbuf */
 570                         rte_memcpy(rte_pktmbuf_append(mbuf, len), packet_ptr1,
 571                                 len);
 572                         packet_len1 -= len;
 573                         packet_ptr1 = ((uint8_t *)packet_ptr1) + len;
 574
 575                         while (packet_len1 > 0) {
 576                                 /* fill new mbufs */
 577                                 m->next = rte_pktmbuf_alloc(sze_q->mb_pool);
 578
 579                                 if (unlikely(m->next == NULL)) {
 580                                         rte_pktmbuf_free(mbuf);
 581                                         /*
 582                                          * Restore items from sze structure
 583                                          * to state after unlocking (eventually
 584                                          * locking).
 585                                          */
 586                                         sze->ct_rx_lck = ct_rx_lck_backup;
 587                                         sze->ct_rx_rem_bytes =
 588                                                 ct_rx_rem_bytes_backup;
 589                                         sze->ct_rx_cur_ptr =
 590                                                 ct_rx_cur_ptr_backup;
 591                                         goto finish;
 592                                 }
 593
 594                                 m = m->next;
 595
 596                                 len = RTE_MIN(rte_pktmbuf_tailroom(m),
 597                                         packet_len1);
 598                                 rte_memcpy(rte_pktmbuf_append(mbuf, len),
 599                                         packet_ptr1, len);
 600
 601                                 (mbuf->nb_segs)++;
 602                                 packet_len1 -= len;
 603                                 packet_ptr1 = ((uint8_t *)packet_ptr1) + len;
 604                         }
 605
 606                         if (packet_ptr2 != NULL) {
 607                                 /* copy second part of packet, if exists */
 608                                 /* fill the rest of currently last mbuf */
 609                                 len = rte_pktmbuf_tailroom(m);
 610                                 rte_memcpy(rte_pktmbuf_append(mbuf, len),
 611                                         packet_ptr2, len);
 612                                 packet_len2 -= len;
 613                                 packet_ptr2 = ((uint8_t *)packet_ptr2) + len;
 614
 615                                 while (packet_len2 > 0) {
 616                                         /* fill new mbufs */
 617                                         m->next = rte_pktmbuf_alloc(
 618                                                         sze_q->mb_pool);
 619
 620                                         if (unlikely(m->next == NULL)) {
 621                                                 rte_pktmbuf_free(mbuf);
 622                                                 /*
 623                                                  * Restore items from sze
 624                                                  * structure to state after
 625                                                  * unlocking (eventually
 626                                                  * locking).
 627                                                  */
 628                                                 sze->ct_rx_lck =
 629                                                         ct_rx_lck_backup;
 630                                                 sze->ct_rx_rem_bytes =
 631                                                         ct_rx_rem_bytes_backup;
 632                                                 sze->ct_rx_cur_ptr =
 633                                                         ct_rx_cur_ptr_backup;
 634                                                 goto finish;
 635                                         }
 636
 637                                         m = m->next;
 638
 639                                         len = RTE_MIN(rte_pktmbuf_tailroom(m),
 640                                                 packet_len2);
 641                                         rte_memcpy(
 642                                                 rte_pktmbuf_append(mbuf, len),
 643                                                 packet_ptr2, len);
 644
 645                                         (mbuf->nb_segs)++;
 646                                         packet_len2 -= len;
 647                                         packet_ptr2 = ((uint8_t *)packet_ptr2) +
 648                                                 len;
 649                                 }
 650                         }
 651                 }
 652                 mbuf->pkt_len = packet_size;
 653                 mbuf->port = sze_q->in_port;
 654                 bufs[num_rx] = mbuf;
 655                 num_rx++;
 656                 num_bytes += packet_size;
 657         }
 658
 659 finish:
 660         sze_q->rx_pkts += num_rx;
 661         sze_q->rx_bytes += num_bytes;
 662         return num_rx;
 663 }
 664
 665 static uint16_t
 666 eth_szedata2_tx(void *queue,
 667                 struct rte_mbuf **bufs,
 668                 uint16_t nb_pkts)
 669 {
 670         struct rte_mbuf *mbuf;
 671         struct szedata2_tx_queue *sze_q = queue;
 672         uint16_t num_tx = 0;
 673         uint64_t num_bytes = 0;
 674
 675         const struct szedata_lock *lck;
 676         uint32_t lock_size;
 677         uint32_t lock_size2;
 678         void *dst;
 679         uint32_t pkt_len;
 680         uint32_t hwpkt_len;
 681         uint32_t unlock_size;
 682         uint32_t rem_len;
 683         uint8_t mbuf_segs;
 684         uint16_t pkt_left = nb_pkts;
 685
 686         if (sze_q->sze == NULL || nb_pkts == 0)
 687                 return 0;
 688
 689         while (pkt_left > 0) {
 690                 unlock_size = 0;
 691                 lck = szedata_tx_lock_data(sze_q->sze,
 692                         RTE_ETH_SZEDATA2_TX_LOCK_SIZE,
 693                         sze_q->tx_channel);
 694                 if (lck == NULL)
 695                         continue;
 696
 697                 dst = lck->start;
 698                 lock_size = lck->len;
 699                 lock_size2 = lck->next ? lck->next->len : 0;
 700
 701 next_packet:
 702                 mbuf = bufs[nb_pkts - pkt_left];
 703
 704                 pkt_len = mbuf->pkt_len;
 705                 mbuf_segs = mbuf->nb_segs;
 706
 707                 hwpkt_len = RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
 708                         RTE_SZE2_ALIGN8(pkt_len);
 709
 710                 if (lock_size + lock_size2 < hwpkt_len) {
 711                         szedata_tx_unlock_data(sze_q->sze, lck, unlock_size);
 712                         continue;
 713                 }
 714
 715                 num_bytes += pkt_len;
 716
 717                 if (lock_size > hwpkt_len) {
 718                         void *tmp_dst;
 719
 720                         rem_len = 0;
 721
 722                         /* write packet length at first 2 bytes in 8B header */
 723                         *((uint16_t *)dst) = htole16(
 724                                         RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
 725                                         pkt_len);
 726                         *(((uint16_t *)dst) + 1) = htole16(0);
 727
 728                         /* copy packet from mbuf */
 729                         tmp_dst = ((uint8_t *)(dst)) +
 730                                 RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
 731                         if (mbuf_segs == 1) {
 732                                 /*
 733                                  * non-scattered packet,
 734                                  * transmit from one mbuf
 735                                  */
 736                                 rte_memcpy(tmp_dst,
 737                                         rte_pktmbuf_mtod(mbuf, const void *),
 738                                         pkt_len);
 739                         } else {
 740                                 /* scattered packet, transmit from more mbufs */
 741                                 struct rte_mbuf *m = mbuf;
 742                                 while (m) {
 743                                         rte_memcpy(tmp_dst,
 744                                                 rte_pktmbuf_mtod(m,
 745                                                 const void *),
 746                                                 m->data_len);
 747                                         tmp_dst = ((uint8_t *)(tmp_dst)) +
 748                                                 m->data_len;
 749                                         m = m->next;
 750                                 }
 751                         }
 752
 753
 754                         dst = ((uint8_t *)dst) + hwpkt_len;
 755                         unlock_size += hwpkt_len;
 756                         lock_size -= hwpkt_len;
 757
 758                         rte_pktmbuf_free(mbuf);
 759                         num_tx++;
 760                         pkt_left--;
 761                         if (pkt_left == 0) {
 762                                 szedata_tx_unlock_data(sze_q->sze, lck,
 763                                         unlock_size);
 764                                 break;
 765                         }
 766                         goto next_packet;
 767                 } else if (lock_size + lock_size2 >= hwpkt_len) {
 768                         void *tmp_dst;
 769                         uint16_t write_len;
 770
 771                         /* write packet length at first 2 bytes in 8B header */
 772                         *((uint16_t *)dst) =
 773                                 htole16(RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED +
 774                                         pkt_len);
 775                         *(((uint16_t *)dst) + 1) = htole16(0);
 776
 777                         /*
 778                          * If the raw packet (pkt_len) is smaller than lock_size
 779                          * get the correct length for memcpy
 780                          */
 781                         write_len =
 782                                 pkt_len < lock_size -
 783                                 RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED ?
 784                                 pkt_len :
 785                                 lock_size - RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
 786
 787                         rem_len = hwpkt_len - lock_size;
 788
 789                         tmp_dst = ((uint8_t *)(dst)) +
 790                                 RTE_SZE2_PACKET_HEADER_SIZE_ALIGNED;
 791                         if (mbuf_segs == 1) {
 792                                 /*
 793                                  * non-scattered packet,
 794                                  * transmit from one mbuf
 795                                  */
 796                                 /* copy part of packet to first area */
 797                                 rte_memcpy(tmp_dst,
 798                                         rte_pktmbuf_mtod(mbuf, const void *),
 799                                         write_len);
 800
 801                                 if (lck->next)
 802                                         dst = lck->next->start;
 803
 804                                 /* copy part of packet to second area */
 805                                 rte_memcpy(dst,
 806                                         (const void *)(rte_pktmbuf_mtod(mbuf,
 807                                                         const uint8_t *) +
 808                                         write_len), pkt_len - write_len);
 809                         } else {
 810                                 /* scattered packet, transmit from more mbufs */
 811                                 struct rte_mbuf *m = mbuf;
 812                                 uint16_t written = 0;
 813                                 uint16_t to_write = 0;
 814                                 bool new_mbuf = true;
 815                                 uint16_t write_off = 0;
 816
 817                                 /* copy part of packet to first area */
 818                                 while (m && written < write_len) {
 819                                         to_write = RTE_MIN(m->data_len,
 820                                                         write_len - written);
 821                                         rte_memcpy(tmp_dst,
 822                                                 rte_pktmbuf_mtod(m,
 823                                                         const void *),
 824                                                 to_write);
 825
 826                                         tmp_dst = ((uint8_t *)(tmp_dst)) +
 827                                                 to_write;
 828                                         if (m->data_len <= write_len -
 829                                                         written) {
 830                                                 m = m->next;
 831                                                 new_mbuf = true;
 832                                         } else {
 833                                                 new_mbuf = false;
 834                                         }
 835                                         written += to_write;
 836                                 }
 837
 838                                 if (lck->next)
 839                                         dst = lck->next->start;
 840
 841                                 tmp_dst = dst;
 842                                 written = 0;
 843                                 write_off = new_mbuf ? 0 : to_write;
 844
 845                                 /* copy part of packet to second area */
 846                                 while (m && written < pkt_len - write_len) {
 847                                         rte_memcpy(tmp_dst, (const void *)
 848                                                 (rte_pktmbuf_mtod(m,
 849                                                 uint8_t *) + write_off),
 850                                                 m->data_len - write_off);
 851
 852                                         tmp_dst = ((uint8_t *)(tmp_dst)) +
 853                                                 (m->data_len - write_off);
 854                                         written += m->data_len - write_off;
 855                                         m = m->next;
 856                                         write_off = 0;
 857                                 }
 858                         }
 859
 860                         dst = ((uint8_t *)dst) + rem_len;
 861                         unlock_size += hwpkt_len;
 862                         lock_size = lock_size2 - rem_len;
 863                         lock_size2 = 0;
 864
 865                         rte_pktmbuf_free(mbuf);
 866                         num_tx++;
 867                 }
 868
 869                 szedata_tx_unlock_data(sze_q->sze, lck, unlock_size);
 870                 pkt_left--;
 871         }
 872
 873         sze_q->tx_pkts += num_tx;
 874         sze_q->err_pkts += nb_pkts - num_tx;
 875         sze_q->tx_bytes += num_bytes;
 876         return num_tx;
 877 }
 878
 879 static int
 880 eth_rx_queue_start(struct rte_eth_dev *dev, uint16_t rxq_id)
 881 {
 882         struct szedata2_rx_queue *rxq = dev->data->rx_queues[rxq_id];
 883         int ret;
 884         struct pmd_internals *internals = (struct pmd_internals *)
 885                 dev->data->dev_private;
 886
 887         if (rxq->sze == NULL) {
 888                 uint32_t rx = 1 << rxq->rx_channel;
 889                 uint32_t tx = 0;
 890                 rxq->sze = szedata_open(internals->sze_dev);
 891                 if (rxq->sze == NULL)
 892                         return -EINVAL;
 893                 ret = szedata_subscribe3(rxq->sze, &rx, &tx);
 894                 if (ret != 0 || rx == 0)
 895                         goto err;
 896         }
 897
 898         ret = szedata_start(rxq->sze);
 899         if (ret != 0)
 900                 goto err;
 901         dev->data->rx_queue_state[rxq_id] = RTE_ETH_QUEUE_STATE_STARTED;
 902         return 0;
 903
 904 err:
 905         szedata_close(rxq->sze);
 906         rxq->sze = NULL;
 907         return -EINVAL;
 908 }
 909
 910 static int
 911 eth_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rxq_id)
 912 {
 913         struct szedata2_rx_queue *rxq = dev->data->rx_queues[rxq_id];
 914
 915         if (rxq->sze != NULL) {
 916                 szedata_close(rxq->sze);
 917                 rxq->sze = NULL;
 918         }
 919
 920         dev->data->rx_queue_state[rxq_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 921         return 0;
 922 }
 923
 924 static int
 925 eth_tx_queue_start(struct rte_eth_dev *dev, uint16_t txq_id)
 926 {
 927         struct szedata2_tx_queue *txq = dev->data->tx_queues[txq_id];
 928         int ret;
 929         struct pmd_internals *internals = (struct pmd_internals *)
 930                 dev->data->dev_private;
 931
 932         if (txq->sze == NULL) {
 933                 uint32_t rx = 0;
 934                 uint32_t tx = 1 << txq->tx_channel;
 935                 txq->sze = szedata_open(internals->sze_dev);
 936                 if (txq->sze == NULL)
 937                         return -EINVAL;
 938                 ret = szedata_subscribe3(txq->sze, &rx, &tx);
 939                 if (ret != 0 || tx == 0)
 940                         goto err;
 941         }
 942
 943         ret = szedata_start(txq->sze);
 944         if (ret != 0)
 945                 goto err;
 946         dev->data->tx_queue_state[txq_id] = RTE_ETH_QUEUE_STATE_STARTED;
 947         return 0;
 948
 949 err:
 950         szedata_close(txq->sze);
 951         txq->sze = NULL;
 952         return -EINVAL;
 953 }
 954
 955 static int
 956 eth_tx_queue_stop(struct rte_eth_dev *dev, uint16_t txq_id)
 957 {
 958         struct szedata2_tx_queue *txq = dev->data->tx_queues[txq_id];
 959
 960         if (txq->sze != NULL) {
 961                 szedata_close(txq->sze);
 962                 txq->sze = NULL;
 963         }
 964
 965         dev->data->tx_queue_state[txq_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 966         return 0;
 967 }
 968
 969 static int
 970 eth_dev_start(struct rte_eth_dev *dev)
 971 {
 972         int ret;
 973         uint16_t i;
 974         uint16_t nb_rx = dev->data->nb_rx_queues;
 975         uint16_t nb_tx = dev->data->nb_tx_queues;
 976
 977         for (i = 0; i < nb_rx; i++) {
 978                 ret = eth_rx_queue_start(dev, i);
 979                 if (ret != 0)
 980                         goto err_rx;
 981         }
 982
 983         for (i = 0; i < nb_tx; i++) {
 984                 ret = eth_tx_queue_start(dev, i);
 985                 if (ret != 0)
 986                         goto err_tx;
 987         }
 988
 989         return 0;
 990
 991 err_tx:
 992         for (i = 0; i < nb_tx; i++)
 993                 eth_tx_queue_stop(dev, i);
 994 err_rx:
 995         for (i = 0; i < nb_rx; i++)
 996                 eth_rx_queue_stop(dev, i);
 997         return ret;
 998 }
 999
1000 static void
1001 eth_dev_stop(struct rte_eth_dev *dev)
1002 {
1003         uint16_t i;
1004         uint16_t nb_rx = dev->data->nb_rx_queues;
1005         uint16_t nb_tx = dev->data->nb_tx_queues;
1006
1007         for (i = 0; i < nb_tx; i++)
1008                 eth_tx_queue_stop(dev, i);
1009
1010         for (i = 0; i < nb_rx; i++)
1011                 eth_rx_queue_stop(dev, i);
1012 }
1013
1014 static int
1015 eth_dev_configure(struct rte_eth_dev *dev)
1016 {
1017         struct rte_eth_dev_data *data = dev->data;
1018         if (data->dev_conf.rxmode.enable_scatter == 1) {
1019                 dev->rx_pkt_burst = eth_szedata2_rx_scattered;
1020                 data->scattered_rx = 1;
1021         } else {
1022                 dev->rx_pkt_burst = eth_szedata2_rx;
1023                 data->scattered_rx = 0;
1024         }
1025         return 0;
1026 }
1027
1028 static void
1029 eth_dev_info(struct rte_eth_dev *dev,
1030                 struct rte_eth_dev_info *dev_info)
1031 {
1032         struct pmd_internals *internals = dev->data->dev_private;
1033         dev_info->if_index = 0;
1034         dev_info->max_mac_addrs = 1;
1035         dev_info->max_rx_pktlen = (uint32_t)-1;
1036         dev_info->max_rx_queues = internals->max_rx_queues;
1037         dev_info->max_tx_queues = internals->max_tx_queues;
1038         dev_info->min_rx_bufsize = 0;
1039         dev_info->speed_capa = ETH_LINK_SPEED_100G;
1040 }
1041
1042 static void
1043 eth_stats_get(struct rte_eth_dev *dev,
1044                 struct rte_eth_stats *stats)
1045 {
1046         uint16_t i;
1047         uint16_t nb_rx = dev->data->nb_rx_queues;
1048         uint16_t nb_tx = dev->data->nb_tx_queues;
1049         uint64_t rx_total = 0;
1050         uint64_t tx_total = 0;
1051         uint64_t tx_err_total = 0;
1052         uint64_t rx_total_bytes = 0;
1053         uint64_t tx_total_bytes = 0;
1054         const struct pmd_internals *internals = dev->data->dev_private;
1055
1056         for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < nb_rx; i++) {
1057                 stats->q_ipackets[i] = internals->rx_queue[i].rx_pkts;
1058                 stats->q_ibytes[i] = internals->rx_queue[i].rx_bytes;
1059                 rx_total += stats->q_ipackets[i];
1060                 rx_total_bytes += stats->q_ibytes[i];
1061         }
1062
1063         for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS && i < nb_tx; i++) {
1064                 stats->q_opackets[i] = internals->tx_queue[i].tx_pkts;
1065                 stats->q_obytes[i] = internals->tx_queue[i].tx_bytes;
1066                 stats->q_errors[i] = internals->tx_queue[i].err_pkts;
1067                 tx_total += stats->q_opackets[i];
1068                 tx_total_bytes += stats->q_obytes[i];
1069                 tx_err_total += stats->q_errors[i];
1070         }
1071
1072         stats->ipackets = rx_total;
1073         stats->opackets = tx_total;
1074         stats->ibytes = rx_total_bytes;
1075         stats->obytes = tx_total_bytes;
1076         stats->oerrors = tx_err_total;
1077 }
1078
1079 static void
1080 eth_stats_reset(struct rte_eth_dev *dev)
1081 {
1082         uint16_t i;
1083         uint16_t nb_rx = dev->data->nb_rx_queues;
1084         uint16_t nb_tx = dev->data->nb_tx_queues;
1085         struct pmd_internals *internals = dev->data->dev_private;
1086
1087         for (i = 0; i < nb_rx; i++) {
1088                 internals->rx_queue[i].rx_pkts = 0;
1089                 internals->rx_queue[i].rx_bytes = 0;
1090                 internals->rx_queue[i].err_pkts = 0;
1091         }
1092         for (i = 0; i < nb_tx; i++) {
1093                 internals->tx_queue[i].tx_pkts = 0;
1094                 internals->tx_queue[i].tx_bytes = 0;
1095                 internals->tx_queue[i].err_pkts = 0;
1096         }
1097 }
1098
1099 static void
1100 eth_rx_queue_release(void *q)
1101 {
1102         struct szedata2_rx_queue *rxq = (struct szedata2_rx_queue *)q;
1103         if (rxq->sze != NULL) {
1104                 szedata_close(rxq->sze);
1105                 rxq->sze = NULL;
1106         }
1107 }
1108
1109 static void
1110 eth_tx_queue_release(void *q)
1111 {
1112         struct szedata2_tx_queue *txq = (struct szedata2_tx_queue *)q;
1113         if (txq->sze != NULL) {
1114                 szedata_close(txq->sze);
1115                 txq->sze = NULL;
1116         }
1117 }
1118
1119 static void
1120 eth_dev_close(struct rte_eth_dev *dev)
1121 {
1122         uint16_t i;
1123         uint16_t nb_rx = dev->data->nb_rx_queues;
1124         uint16_t nb_tx = dev->data->nb_tx_queues;
1125
1126         eth_dev_stop(dev);
1127
1128         for (i = 0; i < nb_rx; i++) {
1129                 eth_rx_queue_release(dev->data->rx_queues[i]);
1130                 dev->data->rx_queues[i] = NULL;
1131         }
1132         dev->data->nb_rx_queues = 0;
1133         for (i = 0; i < nb_tx; i++) {
1134                 eth_tx_queue_release(dev->data->tx_queues[i]);
1135                 dev->data->tx_queues[i] = NULL;
1136         }
1137         dev->data->nb_tx_queues = 0;
1138 }
1139
1140 static int
1141 eth_link_update(struct rte_eth_dev *dev,
1142                 int wait_to_complete __rte_unused)
1143 {
1144         struct rte_eth_link link;
1145         struct rte_eth_link *link_ptr = &link;
1146         struct rte_eth_link *dev_link = &dev->data->dev_link;
1147         volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
1148                         dev, SZEDATA2_CGMII_IBUF_BASE_OFF,
1149                         volatile struct szedata2_cgmii_ibuf *);
1150
1151         switch (cgmii_link_speed(ibuf)) {
1152         case SZEDATA2_LINK_SPEED_10G:
1153                 link.link_speed = ETH_SPEED_NUM_10G;
1154                 break;
1155         case SZEDATA2_LINK_SPEED_40G:
1156                 link.link_speed = ETH_SPEED_NUM_40G;
1157                 break;
1158         case SZEDATA2_LINK_SPEED_100G:
1159                 link.link_speed = ETH_SPEED_NUM_100G;
1160                 break;
1161         default:
1162                 link.link_speed = ETH_SPEED_NUM_10G;
1163                 break;
1164         }
1165
1166         /* szedata2 uses only full duplex */
1167         link.link_duplex = ETH_LINK_FULL_DUPLEX;
1168
1169         link.link_status = (cgmii_ibuf_is_enabled(ibuf) &&
1170                         cgmii_ibuf_is_link_up(ibuf)) ? ETH_LINK_UP : ETH_LINK_DOWN;
1171
1172         link.link_autoneg = ETH_LINK_FIXED;
1173
1174         rte_atomic64_cmpset((uint64_t *)dev_link, *(uint64_t *)dev_link,
1175                         *(uint64_t *)link_ptr);
1176
1177         return 0;
1178 }
1179
1180 static int
1181 eth_dev_set_link_up(struct rte_eth_dev *dev)
1182 {
1183         volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
1184                         dev, SZEDATA2_CGMII_IBUF_BASE_OFF,
1185                         volatile struct szedata2_cgmii_ibuf *);
1186         volatile struct szedata2_cgmii_obuf *obuf = SZEDATA2_PCI_RESOURCE_PTR(
1187                         dev, SZEDATA2_CGMII_OBUF_BASE_OFF,
1188                         volatile struct szedata2_cgmii_obuf *);
1189
1190         cgmii_ibuf_enable(ibuf);
1191         cgmii_obuf_enable(obuf);
1192         return 0;
1193 }
1194
1195 static int
1196 eth_dev_set_link_down(struct rte_eth_dev *dev)
1197 {
1198         volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
1199                         dev, SZEDATA2_CGMII_IBUF_BASE_OFF,
1200                         volatile struct szedata2_cgmii_ibuf *);
1201         volatile struct szedata2_cgmii_obuf *obuf = SZEDATA2_PCI_RESOURCE_PTR(
1202                         dev, SZEDATA2_CGMII_OBUF_BASE_OFF,
1203                         volatile struct szedata2_cgmii_obuf *);
1204
1205         cgmii_ibuf_disable(ibuf);
1206         cgmii_obuf_disable(obuf);
1207         return 0;
1208 }
1209
1210 static int
1211 eth_rx_queue_setup(struct rte_eth_dev *dev,
1212                 uint16_t rx_queue_id,
1213                 uint16_t nb_rx_desc __rte_unused,
1214                 unsigned int socket_id __rte_unused,
1215                 const struct rte_eth_rxconf *rx_conf __rte_unused,
1216                 struct rte_mempool *mb_pool)
1217 {
1218         struct pmd_internals *internals = dev->data->dev_private;
1219         struct szedata2_rx_queue *rxq = &internals->rx_queue[rx_queue_id];
1220         int ret;
1221         uint32_t rx = 1 << rx_queue_id;
1222         uint32_t tx = 0;
1223
1224         rxq->sze = szedata_open(internals->sze_dev);
1225         if (rxq->sze == NULL)
1226                 return -EINVAL;
1227         ret = szedata_subscribe3(rxq->sze, &rx, &tx);
1228         if (ret != 0 || rx == 0) {
1229                 szedata_close(rxq->sze);
1230                 rxq->sze = NULL;
1231                 return -EINVAL;
1232         }
1233         rxq->rx_channel = rx_queue_id;
1234         rxq->in_port = dev->data->port_id;
1235         rxq->mb_pool = mb_pool;
1236         rxq->rx_pkts = 0;
1237         rxq->rx_bytes = 0;
1238         rxq->err_pkts = 0;
1239
1240         dev->data->rx_queues[rx_queue_id] = rxq;
1241         return 0;
1242 }
1243
1244 static int
1245 eth_tx_queue_setup(struct rte_eth_dev *dev,
1246                 uint16_t tx_queue_id,
1247                 uint16_t nb_tx_desc __rte_unused,
1248                 unsigned int socket_id __rte_unused,
1249                 const struct rte_eth_txconf *tx_conf __rte_unused)
1250 {
1251         struct pmd_internals *internals = dev->data->dev_private;
1252         struct szedata2_tx_queue *txq = &internals->tx_queue[tx_queue_id];
1253         int ret;
1254         uint32_t rx = 0;
1255         uint32_t tx = 1 << tx_queue_id;
1256
1257         txq->sze = szedata_open(internals->sze_dev);
1258         if (txq->sze == NULL)
1259                 return -EINVAL;
1260         ret = szedata_subscribe3(txq->sze, &rx, &tx);
1261         if (ret != 0 || tx == 0) {
1262                 szedata_close(txq->sze);
1263                 txq->sze = NULL;
1264                 return -EINVAL;
1265         }
1266         txq->tx_channel = tx_queue_id;
1267         txq->tx_pkts = 0;
1268         txq->tx_bytes = 0;
1269         txq->err_pkts = 0;
1270
1271         dev->data->tx_queues[tx_queue_id] = txq;
1272         return 0;
1273 }
1274
1275 static void
1276 eth_mac_addr_set(struct rte_eth_dev *dev __rte_unused,
1277                 struct ether_addr *mac_addr __rte_unused)
1278 {
1279 }
1280
1281 static void
1282 eth_promiscuous_enable(struct rte_eth_dev *dev)
1283 {
1284         volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
1285                         dev, SZEDATA2_CGMII_IBUF_BASE_OFF,
1286                         volatile struct szedata2_cgmii_ibuf *);
1287         cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_PROMISC);
1288 }
1289
1290 static void
1291 eth_promiscuous_disable(struct rte_eth_dev *dev)
1292 {
1293         volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
1294                         dev, SZEDATA2_CGMII_IBUF_BASE_OFF,
1295                         volatile struct szedata2_cgmii_ibuf *);
1296         cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_ONLY_VALID);
1297 }
1298
1299 static void
1300 eth_allmulticast_enable(struct rte_eth_dev *dev)
1301 {
1302         volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
1303                         dev, SZEDATA2_CGMII_IBUF_BASE_OFF,
1304                         volatile struct szedata2_cgmii_ibuf *);
1305         cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_ALL_MULTICAST);
1306 }
1307
1308 static void
1309 eth_allmulticast_disable(struct rte_eth_dev *dev)
1310 {
1311         volatile struct szedata2_cgmii_ibuf *ibuf = SZEDATA2_PCI_RESOURCE_PTR(
1312                         dev, SZEDATA2_CGMII_IBUF_BASE_OFF,
1313                         volatile struct szedata2_cgmii_ibuf *);
1314         cgmii_ibuf_mac_mode_write(ibuf, SZEDATA2_MAC_CHMODE_ONLY_VALID);
1315 }
1316
1317 static const struct eth_dev_ops ops = {
1318         .dev_start          = eth_dev_start,
1319         .dev_stop           = eth_dev_stop,
1320         .dev_set_link_up    = eth_dev_set_link_up,
1321         .dev_set_link_down  = eth_dev_set_link_down,
1322         .dev_close          = eth_dev_close,
1323         .dev_configure      = eth_dev_configure,
1324         .dev_infos_get      = eth_dev_info,
1325         .promiscuous_enable   = eth_promiscuous_enable,
1326         .promiscuous_disable  = eth_promiscuous_disable,
1327         .allmulticast_enable  = eth_allmulticast_enable,
1328         .allmulticast_disable = eth_allmulticast_disable,
1329         .rx_queue_start     = eth_rx_queue_start,
1330         .rx_queue_stop      = eth_rx_queue_stop,
1331         .tx_queue_start     = eth_tx_queue_start,
1332         .tx_queue_stop      = eth_tx_queue_stop,
1333         .rx_queue_setup     = eth_rx_queue_setup,
1334         .tx_queue_setup     = eth_tx_queue_setup,
1335         .rx_queue_release   = eth_rx_queue_release,
1336         .tx_queue_release   = eth_tx_queue_release,
1337         .link_update        = eth_link_update,
1338         .stats_get          = eth_stats_get,
1339         .stats_reset        = eth_stats_reset,
1340         .mac_addr_set       = eth_mac_addr_set,
1341 };
1342
1343 /*
1344  * This function goes through sysfs and looks for an index of szedata2
1345  * device file (/dev/szedataIIX, where X is the index).
1346  *
1347  * @return
1348  *           0 on success
1349  *          -1 on error
1350  */
1351 static int
1352 get_szedata2_index(struct rte_eth_dev *dev, uint32_t *index)
1353 {
1354         DIR *dir;
1355         struct dirent *entry;
1356         int ret;
1357         uint32_t tmp_index;
1358         FILE *fd;
1359         char pcislot_path[PATH_MAX];
1360         struct rte_pci_addr pcislot_addr = dev->pci_dev->addr;
1361         uint32_t domain;
1362         uint32_t bus;
1363         uint32_t devid;
1364         uint32_t function;
1365
1366         dir = opendir("/sys/class/combo");
1367         if (dir == NULL)
1368                 return -1;
1369
1370         /*
1371          * Iterate through all combosixX directories.
1372          * When the value in /sys/class/combo/combosixX/device/pcislot
1373          * file is the location of the ethernet device dev, "X" is the
1374          * index of the device.
1375          */
1376         while ((entry = readdir(dir)) != NULL) {
1377                 ret = sscanf(entry->d_name, "combosix%u", &tmp_index);
1378                 if (ret != 1)
1379                         continue;
1380
1381                 snprintf(pcislot_path, PATH_MAX,
1382                         "/sys/class/combo/combosix%u/device/pcislot",
1383                         tmp_index);
1384
1385                 fd = fopen(pcislot_path, "r");
1386                 if (fd == NULL)
1387                         continue;
1388
1389                 ret = fscanf(fd, "%4" PRIx16 ":%2" PRIx8 ":%2" PRIx8 ".%" PRIx8,
1390                                 &domain, &bus, &devid, &function);
1391                 fclose(fd);
1392                 if (ret != 4)
1393                         continue;
1394
1395                 if (pcislot_addr.domain == domain &&
1396                                 pcislot_addr.bus == bus &&
1397                                 pcislot_addr.devid == devid &&
1398                                 pcislot_addr.function == function) {
1399                         *index = tmp_index;
1400                         closedir(dir);
1401                         return 0;
1402                 }
1403         }
1404
1405         closedir(dir);
1406         return -1;
1407 }
1408
1409 static int
1410 rte_szedata2_eth_dev_init(struct rte_eth_dev *dev)
1411 {
1412         struct rte_eth_dev_data *data = dev->data;
1413         struct pmd_internals *internals = (struct pmd_internals *)
1414                 data->dev_private;
1415         struct szedata *szedata_temp;
1416         int ret;
1417         uint32_t szedata2_index;
1418         struct rte_pci_addr *pci_addr = &dev->pci_dev->addr;
1419         struct rte_mem_resource *pci_rsc =
1420                 &dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER];
1421         char rsc_filename[PATH_MAX];
1422         void *pci_resource_ptr = NULL;
1423         int fd;
1424
1425         RTE_LOG(INFO, PMD, "Initializing szedata2 device (" PCI_PRI_FMT ")\n",
1426                         pci_addr->domain, pci_addr->bus, pci_addr->devid,
1427                         pci_addr->function);
1428
1429         /* Get index of szedata2 device file and create path to device file */
1430         ret = get_szedata2_index(dev, &szedata2_index);
1431         if (ret != 0) {
1432                 RTE_LOG(ERR, PMD, "Failed to get szedata2 device index!\n");
1433                 return -ENODEV;
1434         }
1435         snprintf(internals->sze_dev, PATH_MAX, SZEDATA2_DEV_PATH_FMT,
1436                         szedata2_index);
1437
1438         RTE_LOG(INFO, PMD, "SZEDATA2 path: %s\n", internals->sze_dev);
1439
1440         /*
1441          * Get number of available DMA RX and TX channels, which is maximum
1442          * number of queues that can be created and store it in private device
1443          * data structure.
1444          */
1445         szedata_temp = szedata_open(internals->sze_dev);
1446         if (szedata_temp == NULL) {
1447                 RTE_LOG(ERR, PMD, "szedata_open(): failed to open %s",
1448                                 internals->sze_dev);
1449                 return -EINVAL;
1450         }
1451         internals->max_rx_queues = szedata_ifaces_available(szedata_temp,
1452                         SZE2_DIR_RX);
1453         internals->max_tx_queues = szedata_ifaces_available(szedata_temp,
1454                         SZE2_DIR_TX);
1455         szedata_close(szedata_temp);
1456
1457         RTE_LOG(INFO, PMD, "Available DMA channels RX: %u TX: %u\n",
1458                         internals->max_rx_queues, internals->max_tx_queues);
1459
1460         /* Set rx, tx burst functions */
1461         if (data->dev_conf.rxmode.enable_scatter == 1 ||
1462                 data->scattered_rx == 1) {
1463                 dev->rx_pkt_burst = eth_szedata2_rx_scattered;
1464                 data->scattered_rx = 1;
1465         } else {
1466                 dev->rx_pkt_burst = eth_szedata2_rx;
1467                 data->scattered_rx = 0;
1468         }
1469         dev->tx_pkt_burst = eth_szedata2_tx;
1470
1471         /* Set function callbacks for Ethernet API */
1472         dev->dev_ops = &ops;
1473
1474         rte_eth_copy_pci_info(dev, dev->pci_dev);
1475
1476         /* mmap pci resource0 file to rte_mem_resource structure */
1477         if (dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER].phys_addr ==
1478                         0) {
1479                 RTE_LOG(ERR, PMD, "Missing resource%u file\n",
1480                                 PCI_RESOURCE_NUMBER);
1481                 return -EINVAL;
1482         }
1483         snprintf(rsc_filename, PATH_MAX,
1484                 "%s/" PCI_PRI_FMT "/resource%u", pci_get_sysfs_path(),
1485                 pci_addr->domain, pci_addr->bus,
1486                 pci_addr->devid, pci_addr->function, PCI_RESOURCE_NUMBER);
1487         fd = open(rsc_filename, O_RDWR);
1488         if (fd < 0) {
1489                 RTE_LOG(ERR, PMD, "Could not open file %s\n", rsc_filename);
1490                 return -EINVAL;
1491         }
1492
1493         pci_resource_ptr = mmap(0,
1494                         dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER].len,
1495                         PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1496         close(fd);
1497         if (pci_resource_ptr == MAP_FAILED) {
1498                 RTE_LOG(ERR, PMD, "Could not mmap file %s (fd = %d)\n",
1499                                 rsc_filename, fd);
1500                 return -EINVAL;
1501         }
1502         dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER].addr =
1503                 pci_resource_ptr;
1504
1505         RTE_LOG(DEBUG, PMD, "resource%u phys_addr = 0x%llx len = %llu "
1506                         "virt addr = %llx\n", PCI_RESOURCE_NUMBER,
1507                         (unsigned long long)pci_rsc->phys_addr,
1508                         (unsigned long long)pci_rsc->len,
1509                         (unsigned long long)pci_rsc->addr);
1510
1511         /* Get link state */
1512         eth_link_update(dev, 0);
1513
1514         /* Allocate space for one mac address */
1515         data->mac_addrs = rte_zmalloc(data->name, sizeof(struct ether_addr),
1516                         RTE_CACHE_LINE_SIZE);
1517         if (data->mac_addrs == NULL) {
1518                 RTE_LOG(ERR, PMD, "Could not alloc space for MAC address!\n");
1519                 munmap(dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER].addr,
1520                         dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER].len);
1521                 return -EINVAL;
1522         }
1523
1524         ether_addr_copy(&eth_addr, data->mac_addrs);
1525
1526         /* At initial state COMBO card is in promiscuous mode so disable it */
1527         eth_promiscuous_disable(dev);
1528
1529         RTE_LOG(INFO, PMD, "szedata2 device ("
1530                         PCI_PRI_FMT ") successfully initialized\n",
1531                         pci_addr->domain, pci_addr->bus, pci_addr->devid,
1532                         pci_addr->function);
1533
1534         return 0;
1535 }
1536
1537 static int
1538 rte_szedata2_eth_dev_uninit(struct rte_eth_dev *dev)
1539 {
1540         struct rte_pci_addr *pci_addr = &dev->pci_dev->addr;
1541
1542         rte_free(dev->data->mac_addrs);
1543         dev->data->mac_addrs = NULL;
1544         munmap(dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER].addr,
1545                 dev->pci_dev->mem_resource[PCI_RESOURCE_NUMBER].len);
1546
1547         RTE_LOG(INFO, PMD, "szedata2 device ("
1548                         PCI_PRI_FMT ") successfully uninitialized\n",
1549                         pci_addr->domain, pci_addr->bus, pci_addr->devid,
1550                         pci_addr->function);
1551
1552         return 0;
1553 }
1554
1555 static const struct rte_pci_id rte_szedata2_pci_id_table[] = {
1556         {
1557                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
1558                                 PCI_DEVICE_ID_NETCOPE_COMBO80G)
1559         },
1560         {
1561                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
1562                                 PCI_DEVICE_ID_NETCOPE_COMBO100G)
1563         },
1564         {
1565                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETCOPE,
1566                                 PCI_DEVICE_ID_NETCOPE_COMBO100G2)
1567         },
1568         {
1569                 .vendor_id = 0,
1570         }
1571 };
1572
1573 static struct eth_driver szedata2_eth_driver = {
1574         .pci_drv = {
1575                 .id_table = rte_szedata2_pci_id_table,
1576                 .probe = rte_eth_dev_pci_probe,
1577                 .remove = rte_eth_dev_pci_remove,
1578         },
1579         .eth_dev_init     = rte_szedata2_eth_dev_init,
1580         .eth_dev_uninit   = rte_szedata2_eth_dev_uninit,
1581         .dev_private_size = sizeof(struct pmd_internals),
1582 };
1583
1584 RTE_PMD_REGISTER_PCI(RTE_SZEDATA2_DRIVER_NAME, szedata2_eth_driver.pci_drv);
1585 RTE_PMD_REGISTER_PCI_TABLE(RTE_SZEDATA2_DRIVER_NAME, rte_szedata2_pci_id_table);