drivers/compress/qat/qat_comp_pmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015-2019 Intel Corporation
   3  */
   4
   5 #include <rte_malloc.h>
   6
   7 #include "qat_comp.h"
   8 #include "qat_comp_pmd.h"
   9
  10 #define QAT_PMD_COMP_SGL_DEF_SEGMENTS 16
  11
  12 struct stream_create_info {
  13         struct qat_comp_dev_private *comp_dev;
  14         int socket_id;
  15         int error;
  16 };
  17
  18 static const struct rte_compressdev_capabilities qat_comp_gen_capabilities[] = {
  19         {/* COMPRESSION - deflate */
  20          .algo = RTE_COMP_ALGO_DEFLATE,
  21          .comp_feature_flags = RTE_COMP_FF_MULTI_PKT_CHECKSUM |
  22                                 RTE_COMP_FF_CRC32_CHECKSUM |
  23                                 RTE_COMP_FF_ADLER32_CHECKSUM |
  24                                 RTE_COMP_FF_CRC32_ADLER32_CHECKSUM |
  25                                 RTE_COMP_FF_SHAREABLE_PRIV_XFORM |
  26                                 RTE_COMP_FF_HUFFMAN_FIXED |
  27                                 RTE_COMP_FF_HUFFMAN_DYNAMIC |
  28                                 RTE_COMP_FF_OOP_SGL_IN_SGL_OUT |
  29                                 RTE_COMP_FF_OOP_SGL_IN_LB_OUT |
  30                                 RTE_COMP_FF_OOP_LB_IN_SGL_OUT |
  31                                 RTE_COMP_FF_STATEFUL_DECOMPRESSION,
  32          .window_size = {.min = 15, .max = 15, .increment = 0} },
  33         {RTE_COMP_ALGO_LIST_END, 0, {0, 0, 0} } };
  34
  35 static void
  36 qat_comp_stats_get(struct rte_compressdev *dev,
  37                 struct rte_compressdev_stats *stats)
  38 {
  39         struct qat_common_stats qat_stats = {0};
  40         struct qat_comp_dev_private *qat_priv;
  41
  42         if (stats == NULL || dev == NULL) {
  43                 QAT_LOG(ERR, "invalid ptr: stats %p, dev %p", stats, dev);
  44                 return;
  45         }
  46         qat_priv = dev->data->dev_private;
  47
  48         qat_stats_get(qat_priv->qat_dev, &qat_stats, QAT_SERVICE_COMPRESSION);
  49         stats->enqueued_count = qat_stats.enqueued_count;
  50         stats->dequeued_count = qat_stats.dequeued_count;
  51         stats->enqueue_err_count = qat_stats.enqueue_err_count;
  52         stats->dequeue_err_count = qat_stats.dequeue_err_count;
  53 }
  54
  55 static void
  56 qat_comp_stats_reset(struct rte_compressdev *dev)
  57 {
  58         struct qat_comp_dev_private *qat_priv;
  59
  60         if (dev == NULL) {
  61                 QAT_LOG(ERR, "invalid compressdev ptr %p", dev);
  62                 return;
  63         }
  64         qat_priv = dev->data->dev_private;
  65
  66         qat_stats_reset(qat_priv->qat_dev, QAT_SERVICE_COMPRESSION);
  67
  68 }
  69
  70 static int
  71 qat_comp_qp_release(struct rte_compressdev *dev, uint16_t queue_pair_id)
  72 {
  73         struct qat_comp_dev_private *qat_private = dev->data->dev_private;
  74         struct qat_qp **qp_addr =
  75                 (struct qat_qp **)&(dev->data->queue_pairs[queue_pair_id]);
  76         struct qat_qp *qp = (struct qat_qp *)*qp_addr;
  77         uint32_t i;
  78
  79         QAT_LOG(DEBUG, "Release comp qp %u on device %d",
  80                                 queue_pair_id, dev->data->dev_id);
  81
  82         qat_private->qat_dev->qps_in_use[QAT_SERVICE_COMPRESSION][queue_pair_id]
  83                                                 = NULL;
  84
  85         for (i = 0; i < qp->nb_descriptors; i++) {
  86
  87                 struct qat_comp_op_cookie *cookie = qp->op_cookies[i];
  88
  89                 rte_free(cookie->qat_sgl_src_d);
  90                 rte_free(cookie->qat_sgl_dst_d);
  91         }
  92
  93         return qat_qp_release((struct qat_qp **)
  94                         &(dev->data->queue_pairs[queue_pair_id]));
  95 }
  96
  97 static int
  98 qat_comp_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
  99                   uint32_t max_inflight_ops, int socket_id)
 100 {
 101         struct qat_qp *qp;
 102         int ret = 0;
 103         uint32_t i;
 104         struct qat_qp_config qat_qp_conf;
 105
 106         struct qat_qp **qp_addr =
 107                         (struct qat_qp **)&(dev->data->queue_pairs[qp_id]);
 108         struct qat_comp_dev_private *qat_private = dev->data->dev_private;
 109         const struct qat_qp_hw_data *comp_hw_qps =
 110                         qat_gen_config[qat_private->qat_dev->qat_dev_gen]
 111                                       .qp_hw_data[QAT_SERVICE_COMPRESSION];
 112         const struct qat_qp_hw_data *qp_hw_data = comp_hw_qps + qp_id;
 113
 114         /* If qp is already in use free ring memory and qp metadata. */
 115         if (*qp_addr != NULL) {
 116                 ret = qat_comp_qp_release(dev, qp_id);
 117                 if (ret < 0)
 118                         return ret;
 119         }
 120         if (qp_id >= qat_qps_per_service(comp_hw_qps,
 121                                          QAT_SERVICE_COMPRESSION)) {
 122                 QAT_LOG(ERR, "qp_id %u invalid for this device", qp_id);
 123                 return -EINVAL;
 124         }
 125
 126         qat_qp_conf.hw = qp_hw_data;
 127         qat_qp_conf.build_request = qat_comp_build_request;
 128         qat_qp_conf.cookie_size = sizeof(struct qat_comp_op_cookie);
 129         qat_qp_conf.nb_descriptors = max_inflight_ops;
 130         qat_qp_conf.socket_id = socket_id;
 131         qat_qp_conf.service_str = "comp";
 132
 133         ret = qat_qp_setup(qat_private->qat_dev, qp_addr, qp_id, &qat_qp_conf);
 134         if (ret != 0)
 135                 return ret;
 136
 137         /* store a link to the qp in the qat_pci_device */
 138         qat_private->qat_dev->qps_in_use[QAT_SERVICE_COMPRESSION][qp_id]
 139                                                                 = *qp_addr;
 140
 141         qp = (struct qat_qp *)*qp_addr;
 142
 143         for (i = 0; i < qp->nb_descriptors; i++) {
 144
 145                 struct qat_comp_op_cookie *cookie =
 146                                 qp->op_cookies[i];
 147
 148                 cookie->qat_sgl_src_d = rte_zmalloc_socket(NULL,
 149                                         sizeof(struct qat_sgl) +
 150                                         sizeof(struct qat_flat_buf) *
 151                                         QAT_PMD_COMP_SGL_DEF_SEGMENTS,
 152                                         64, dev->data->socket_id);
 153
 154                 cookie->qat_sgl_dst_d = rte_zmalloc_socket(NULL,
 155                                         sizeof(struct qat_sgl) +
 156                                         sizeof(struct qat_flat_buf) *
 157                                         QAT_PMD_COMP_SGL_DEF_SEGMENTS,
 158                                         64, dev->data->socket_id);
 159
 160                 if (cookie->qat_sgl_src_d == NULL ||
 161                                 cookie->qat_sgl_dst_d == NULL) {
 162                         QAT_LOG(ERR, "Can't allocate SGL"
 163                                      " for device %s",
 164                                      qat_private->qat_dev->name);
 165                         return -ENOMEM;
 166                 }
 167
 168                 cookie->qat_sgl_src_phys_addr =
 169                                 rte_malloc_virt2iova(cookie->qat_sgl_src_d);
 170
 171                 cookie->qat_sgl_dst_phys_addr =
 172                                 rte_malloc_virt2iova(cookie->qat_sgl_dst_d);
 173
 174                 cookie->dst_nb_elems = cookie->src_nb_elems =
 175                                 QAT_PMD_COMP_SGL_DEF_SEGMENTS;
 176
 177                 cookie->socket_id = dev->data->socket_id;
 178
 179                 cookie->error = 0;
 180         }
 181
 182         return ret;
 183 }
 184
 185
 186 #define QAT_IM_BUFFER_DEBUG 0
 187 static const struct rte_memzone *
 188 qat_comp_setup_inter_buffers(struct qat_comp_dev_private *comp_dev,
 189                               uint32_t buff_size)
 190 {
 191         char inter_buff_mz_name[RTE_MEMZONE_NAMESIZE];
 192         const struct rte_memzone *memzone;
 193         uint8_t *mz_start = NULL;
 194         rte_iova_t mz_start_phys = 0;
 195         struct array_of_ptrs *array_of_pointers;
 196         int size_of_ptr_array;
 197         uint32_t full_size;
 198         uint32_t offset_of_sgls, offset_of_flat_buffs = 0;
 199         int i;
 200         int num_im_sgls = qat_gen_config[
 201                 comp_dev->qat_dev->qat_dev_gen].comp_num_im_bufs_required;
 202
 203         QAT_LOG(DEBUG, "QAT COMP device %s needs %d sgls",
 204                                 comp_dev->qat_dev->name, num_im_sgls);
 205         snprintf(inter_buff_mz_name, RTE_MEMZONE_NAMESIZE,
 206                                 "%s_inter_buff", comp_dev->qat_dev->name);
 207         memzone = rte_memzone_lookup(inter_buff_mz_name);
 208         if (memzone != NULL) {
 209                 QAT_LOG(DEBUG, "QAT COMP im buffer memzone created already");
 210                 return memzone;
 211         }
 212
 213         /* Create a memzone to hold intermediate buffers and associated
 214          * meta-data needed by the firmware. The memzone contains 3 parts:
 215          *  - a list of num_im_sgls physical pointers to sgls
 216          *  - the num_im_sgl sgl structures, each pointing to
 217          *    QAT_NUM_BUFS_IN_IM_SGL flat buffers
 218          *  - the flat buffers: num_im_sgl * QAT_NUM_BUFS_IN_IM_SGL
 219          *    buffers, each of buff_size
 220          * num_im_sgls depends on the hardware generation of the device
 221          * buff_size comes from the user via the config file
 222          */
 223
 224         size_of_ptr_array = num_im_sgls * sizeof(phys_addr_t);
 225         offset_of_sgls = (size_of_ptr_array + (~QAT_64_BYTE_ALIGN_MASK))
 226                         & QAT_64_BYTE_ALIGN_MASK;
 227         offset_of_flat_buffs =
 228             offset_of_sgls + num_im_sgls * sizeof(struct qat_inter_sgl);
 229         full_size = offset_of_flat_buffs +
 230                         num_im_sgls * buff_size * QAT_NUM_BUFS_IN_IM_SGL;
 231
 232         memzone = rte_memzone_reserve_aligned(inter_buff_mz_name, full_size,
 233                         comp_dev->compressdev->data->socket_id,
 234                         RTE_MEMZONE_IOVA_CONTIG, QAT_64_BYTE_ALIGN);
 235         if (memzone == NULL) {
 236                 QAT_LOG(ERR, "Can't allocate intermediate buffers"
 237                                 " for device %s", comp_dev->qat_dev->name);
 238                 return NULL;
 239         }
 240
 241         mz_start = (uint8_t *)memzone->addr;
 242         mz_start_phys = memzone->phys_addr;
 243         QAT_LOG(DEBUG, "Memzone %s: addr = %p, phys = 0x%"PRIx64
 244                         ", size required %d, size created %zu",
 245                         inter_buff_mz_name, mz_start, mz_start_phys,
 246                         full_size, memzone->len);
 247
 248         array_of_pointers = (struct array_of_ptrs *)mz_start;
 249         for (i = 0; i < num_im_sgls; i++) {
 250                 uint32_t curr_sgl_offset =
 251                     offset_of_sgls + i * sizeof(struct qat_inter_sgl);
 252                 struct qat_inter_sgl *sgl =
 253                     (struct qat_inter_sgl *)(mz_start + curr_sgl_offset);
 254                 int lb;
 255                 array_of_pointers->pointer[i] = mz_start_phys + curr_sgl_offset;
 256
 257                 sgl->num_bufs = QAT_NUM_BUFS_IN_IM_SGL;
 258                 sgl->num_mapped_bufs = 0;
 259                 sgl->resrvd = 0;
 260
 261 #if QAT_IM_BUFFER_DEBUG
 262                 QAT_LOG(DEBUG, "  : phys addr of sgl[%i] in array_of_pointers"
 263                         " = 0x%"PRIx64, i, array_of_pointers->pointer[i]);
 264                 QAT_LOG(DEBUG, "  : virt address of sgl[%i] = %p", i, sgl);
 265 #endif
 266                 for (lb = 0; lb < QAT_NUM_BUFS_IN_IM_SGL; lb++) {
 267                         sgl->buffers[lb].addr =
 268                           mz_start_phys + offset_of_flat_buffs +
 269                           (((i * QAT_NUM_BUFS_IN_IM_SGL) + lb) * buff_size);
 270                         sgl->buffers[lb].len = buff_size;
 271                         sgl->buffers[lb].resrvd = 0;
 272 #if QAT_IM_BUFFER_DEBUG
 273                         QAT_LOG(DEBUG,
 274                           "  : sgl->buffers[%d].addr = 0x%"PRIx64", len=%d",
 275                           lb, sgl->buffers[lb].addr, sgl->buffers[lb].len);
 276 #endif
 277                 }
 278         }
 279 #if QAT_IM_BUFFER_DEBUG
 280         QAT_DP_HEXDUMP_LOG(DEBUG,  "IM buffer memzone start:",
 281                         mz_start, offset_of_flat_buffs + 32);
 282 #endif
 283         return memzone;
 284 }
 285
 286 static struct rte_mempool *
 287 qat_comp_create_xform_pool(struct qat_comp_dev_private *comp_dev,
 288                            struct rte_compressdev_config *config,
 289                            uint32_t num_elements)
 290 {
 291         char xform_pool_name[RTE_MEMPOOL_NAMESIZE];
 292         struct rte_mempool *mp;
 293
 294         snprintf(xform_pool_name, RTE_MEMPOOL_NAMESIZE,
 295                         "%s_xforms", comp_dev->qat_dev->name);
 296
 297         QAT_LOG(DEBUG, "xformpool: %s", xform_pool_name);
 298         mp = rte_mempool_lookup(xform_pool_name);
 299
 300         if (mp != NULL) {
 301                 QAT_LOG(DEBUG, "xformpool already created");
 302                 if (mp->size != num_elements) {
 303                         QAT_LOG(DEBUG, "xformpool wrong size - delete it");
 304                         rte_mempool_free(mp);
 305                         mp = NULL;
 306                         comp_dev->xformpool = NULL;
 307                 }
 308         }
 309
 310         if (mp == NULL)
 311                 mp = rte_mempool_create(xform_pool_name,
 312                                 num_elements,
 313                                 qat_comp_xform_size(), 0, 0,
 314                                 NULL, NULL, NULL, NULL, config->socket_id,
 315                                 0);
 316         if (mp == NULL) {
 317                 QAT_LOG(ERR, "Err creating mempool %s w %d elements of size %d",
 318                         xform_pool_name, num_elements, qat_comp_xform_size());
 319                 return NULL;
 320         }
 321
 322         return mp;
 323 }
 324
 325 static void
 326 qat_comp_stream_init(struct rte_mempool *mp __rte_unused, void *opaque,
 327                      void *obj, unsigned int obj_idx)
 328 {
 329         struct stream_create_info *info = opaque;
 330         struct qat_comp_stream *stream = obj;
 331         char mz_name[RTE_MEMZONE_NAMESIZE];
 332         const struct rte_memzone *memzone;
 333         struct qat_inter_sgl *ram_banks_desc;
 334
 335         /* find a memzone for RAM banks */
 336         snprintf(mz_name, RTE_MEMZONE_NAMESIZE, "%s_%u_rambanks",
 337                  info->comp_dev->qat_dev->name, obj_idx);
 338         memzone = rte_memzone_lookup(mz_name);
 339         if (memzone == NULL) {
 340                 /* allocate a memzone for compression state and RAM banks */
 341                 memzone = rte_memzone_reserve_aligned(mz_name,
 342                         QAT_STATE_REGISTERS_MAX_SIZE
 343                                 + sizeof(struct qat_inter_sgl)
 344                                 + QAT_INFLATE_CONTEXT_SIZE,
 345                         info->socket_id,
 346                         RTE_MEMZONE_IOVA_CONTIG, QAT_64_BYTE_ALIGN);
 347                 if (memzone == NULL) {
 348                         QAT_LOG(ERR,
 349                             "Can't allocate RAM banks for device %s, object %u",
 350                                 info->comp_dev->qat_dev->name, obj_idx);
 351                         info->error = -ENOMEM;
 352                         return;
 353                 }
 354         }
 355
 356         /* prepare the buffer list descriptor for RAM banks */
 357         ram_banks_desc = (struct qat_inter_sgl *)
 358                 (((uint8_t *) memzone->addr) + QAT_STATE_REGISTERS_MAX_SIZE);
 359         ram_banks_desc->num_bufs = 1;
 360         ram_banks_desc->buffers[0].len = QAT_INFLATE_CONTEXT_SIZE;
 361         ram_banks_desc->buffers[0].addr = memzone->iova
 362                         + QAT_STATE_REGISTERS_MAX_SIZE
 363                         + sizeof(struct qat_inter_sgl);
 364
 365         memset(stream, 0, qat_comp_stream_size());
 366         stream->memzone = memzone;
 367         stream->state_registers_decomp = memzone->addr;
 368         stream->state_registers_decomp_phys = memzone->iova;
 369         stream->inflate_context = ((uint8_t *) memzone->addr)
 370                         + QAT_STATE_REGISTERS_MAX_SIZE;
 371         stream->inflate_context_phys = memzone->iova
 372                         + QAT_STATE_REGISTERS_MAX_SIZE;
 373 }
 374
 375 static void
 376 qat_comp_stream_destroy(struct rte_mempool *mp __rte_unused,
 377                         void *opaque __rte_unused, void *obj,
 378                         unsigned obj_idx __rte_unused)
 379 {
 380         struct qat_comp_stream *stream = obj;
 381
 382         rte_memzone_free(stream->memzone);
 383 }
 384
 385 static struct rte_mempool *
 386 qat_comp_create_stream_pool(struct qat_comp_dev_private *comp_dev,
 387                             int socket_id,
 388                             uint32_t num_elements)
 389 {
 390         char stream_pool_name[RTE_MEMPOOL_NAMESIZE];
 391         struct rte_mempool *mp;
 392
 393         snprintf(stream_pool_name, RTE_MEMPOOL_NAMESIZE,
 394                  "%s_streams", comp_dev->qat_dev->name);
 395
 396         QAT_LOG(DEBUG, "streampool: %s", stream_pool_name);
 397         mp = rte_mempool_lookup(stream_pool_name);
 398
 399         if (mp != NULL) {
 400                 QAT_LOG(DEBUG, "streampool already created");
 401                 if (mp->size != num_elements) {
 402                         QAT_LOG(DEBUG, "streampool wrong size - delete it");
 403                         rte_mempool_obj_iter(mp, qat_comp_stream_destroy, NULL);
 404                         rte_mempool_free(mp);
 405                         mp = NULL;
 406                         comp_dev->streampool = NULL;
 407                 }
 408         }
 409
 410         if (mp == NULL) {
 411                 struct stream_create_info info = {
 412                         .comp_dev = comp_dev,
 413                         .socket_id = socket_id,
 414                         .error = 0
 415                 };
 416                 mp = rte_mempool_create(stream_pool_name,
 417                                 num_elements,
 418                                 qat_comp_stream_size(), 0, 0,
 419                                 NULL, NULL, qat_comp_stream_init, &info,
 420                                 socket_id, 0);
 421                 if (mp == NULL) {
 422                         QAT_LOG(ERR,
 423                              "Err creating mempool %s w %d elements of size %d",
 424                              stream_pool_name, num_elements,
 425                              qat_comp_stream_size());
 426                 } else if (info.error) {
 427                         rte_mempool_obj_iter(mp, qat_comp_stream_destroy, NULL);
 428                         QAT_LOG(ERR,
 429                              "Destoying mempool %s as at least one element failed initialisation",
 430                              stream_pool_name);
 431                         rte_mempool_free(mp);
 432                         mp = NULL;
 433                 }
 434         }
 435
 436         return mp;
 437 }
 438
 439 static void
 440 _qat_comp_dev_config_clear(struct qat_comp_dev_private *comp_dev)
 441 {
 442         /* Free intermediate buffers */
 443         if (comp_dev->interm_buff_mz) {
 444                 rte_memzone_free(comp_dev->interm_buff_mz);
 445                 comp_dev->interm_buff_mz = NULL;
 446         }
 447
 448         /* Free private_xform pool */
 449         if (comp_dev->xformpool) {
 450                 /* Free internal mempool for private xforms */
 451                 rte_mempool_free(comp_dev->xformpool);
 452                 comp_dev->xformpool = NULL;
 453         }
 454
 455         /* Free stream pool */
 456         if (comp_dev->streampool) {
 457                 rte_mempool_obj_iter(comp_dev->streampool,
 458                                      qat_comp_stream_destroy, NULL);
 459                 rte_mempool_free(comp_dev->streampool);
 460                 comp_dev->streampool = NULL;
 461         }
 462 }
 463
 464 static int
 465 qat_comp_dev_config(struct rte_compressdev *dev,
 466                 struct rte_compressdev_config *config)
 467 {
 468         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 469         int ret = 0;
 470
 471         if (RTE_PMD_QAT_COMP_IM_BUFFER_SIZE == 0) {
 472                 QAT_LOG(WARNING,
 473                         "RTE_PMD_QAT_COMP_IM_BUFFER_SIZE = 0 in config file, so"
 474                         " QAT device can't be used for Dynamic Deflate. "
 475                         "Did you really intend to do this?");
 476         } else {
 477                 comp_dev->interm_buff_mz =
 478                                 qat_comp_setup_inter_buffers(comp_dev,
 479                                         RTE_PMD_QAT_COMP_IM_BUFFER_SIZE);
 480                 if (comp_dev->interm_buff_mz == NULL) {
 481                         ret = -ENOMEM;
 482                         goto error_out;
 483                 }
 484         }
 485
 486         if (config->max_nb_priv_xforms) {
 487                 comp_dev->xformpool = qat_comp_create_xform_pool(comp_dev,
 488                                             config, config->max_nb_priv_xforms);
 489                 if (comp_dev->xformpool == NULL) {
 490                         ret = -ENOMEM;
 491                         goto error_out;
 492                 }
 493         } else
 494                 comp_dev->xformpool = NULL;
 495
 496         if (config->max_nb_streams) {
 497                 comp_dev->streampool = qat_comp_create_stream_pool(comp_dev,
 498                                      config->socket_id, config->max_nb_streams);
 499                 if (comp_dev->streampool == NULL) {
 500                         ret = -ENOMEM;
 501                         goto error_out;
 502                 }
 503         } else
 504                 comp_dev->streampool = NULL;
 505
 506         return 0;
 507
 508 error_out:
 509         _qat_comp_dev_config_clear(comp_dev);
 510         return ret;
 511 }
 512
 513 static int
 514 qat_comp_dev_start(struct rte_compressdev *dev __rte_unused)
 515 {
 516         return 0;
 517 }
 518
 519 static void
 520 qat_comp_dev_stop(struct rte_compressdev *dev __rte_unused)
 521 {
 522
 523 }
 524
 525 static int
 526 qat_comp_dev_close(struct rte_compressdev *dev)
 527 {
 528         int i;
 529         int ret = 0;
 530         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 531
 532         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
 533                 ret = qat_comp_qp_release(dev, i);
 534                 if (ret < 0)
 535                         return ret;
 536         }
 537
 538         _qat_comp_dev_config_clear(comp_dev);
 539
 540         return ret;
 541 }
 542
 543
 544 static void
 545 qat_comp_dev_info_get(struct rte_compressdev *dev,
 546                         struct rte_compressdev_info *info)
 547 {
 548         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 549         const struct qat_qp_hw_data *comp_hw_qps =
 550                 qat_gen_config[comp_dev->qat_dev->qat_dev_gen]
 551                               .qp_hw_data[QAT_SERVICE_COMPRESSION];
 552
 553         if (info != NULL) {
 554                 info->max_nb_queue_pairs =
 555                         qat_qps_per_service(comp_hw_qps,
 556                                             QAT_SERVICE_COMPRESSION);
 557                 info->feature_flags = dev->feature_flags;
 558                 info->capabilities = comp_dev->qat_dev_capabilities;
 559         }
 560 }
 561
 562 static uint16_t
 563 qat_comp_pmd_enqueue_op_burst(void *qp, struct rte_comp_op **ops,
 564                 uint16_t nb_ops)
 565 {
 566         return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 567 }
 568
 569 static uint16_t
 570 qat_comp_pmd_dequeue_op_burst(void *qp, struct rte_comp_op **ops,
 571                               uint16_t nb_ops)
 572 {
 573         return qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 574 }
 575
 576 static uint16_t
 577 qat_comp_pmd_enq_deq_dummy_op_burst(void *qp __rte_unused,
 578                                     struct rte_comp_op **ops __rte_unused,
 579                                     uint16_t nb_ops __rte_unused)
 580 {
 581         QAT_DP_LOG(ERR, "QAT PMD detected wrong FW version !");
 582         return 0;
 583 }
 584
 585 static struct rte_compressdev_ops compress_qat_dummy_ops = {
 586
 587         /* Device related operations */
 588         .dev_configure          = NULL,
 589         .dev_start              = NULL,
 590         .dev_stop               = qat_comp_dev_stop,
 591         .dev_close              = qat_comp_dev_close,
 592         .dev_infos_get          = NULL,
 593
 594         .stats_get              = NULL,
 595         .stats_reset            = qat_comp_stats_reset,
 596         .queue_pair_setup       = NULL,
 597         .queue_pair_release     = qat_comp_qp_release,
 598
 599         /* Compression related operations */
 600         .private_xform_create   = NULL,
 601         .private_xform_free     = qat_comp_private_xform_free
 602 };
 603
 604 static uint16_t
 605 qat_comp_pmd_dequeue_frst_op_burst(void *qp, struct rte_comp_op **ops,
 606                                    uint16_t nb_ops)
 607 {
 608         uint16_t ret = qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 609         struct qat_qp *tmp_qp = (struct qat_qp *)qp;
 610
 611         if (ret) {
 612                 if ((*ops)->debug_status ==
 613                                 (uint64_t)ERR_CODE_QAT_COMP_WRONG_FW) {
 614                         tmp_qp->qat_dev->comp_dev->compressdev->enqueue_burst =
 615                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 616                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 617                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 618
 619                         tmp_qp->qat_dev->comp_dev->compressdev->dev_ops =
 620                                         &compress_qat_dummy_ops;
 621                         QAT_LOG(ERR, "QAT PMD detected wrong FW version !");
 622
 623                 } else {
 624                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 625                                         qat_comp_pmd_dequeue_op_burst;
 626                 }
 627         }
 628         return ret;
 629 }
 630
 631 static struct rte_compressdev_ops compress_qat_ops = {
 632
 633         /* Device related operations */
 634         .dev_configure          = qat_comp_dev_config,
 635         .dev_start              = qat_comp_dev_start,
 636         .dev_stop               = qat_comp_dev_stop,
 637         .dev_close              = qat_comp_dev_close,
 638         .dev_infos_get          = qat_comp_dev_info_get,
 639
 640         .stats_get              = qat_comp_stats_get,
 641         .stats_reset            = qat_comp_stats_reset,
 642         .queue_pair_setup       = qat_comp_qp_setup,
 643         .queue_pair_release     = qat_comp_qp_release,
 644
 645         /* Compression related operations */
 646         .private_xform_create   = qat_comp_private_xform_create,
 647         .private_xform_free     = qat_comp_private_xform_free,
 648         .stream_create          = qat_comp_stream_create,
 649         .stream_free            = qat_comp_stream_free
 650 };
 651
 652 /* An rte_driver is needed in the registration of the device with compressdev.
 653  * The actual qat pci's rte_driver can't be used as its name represents
 654  * the whole pci device with all services. Think of this as a holder for a name
 655  * for the compression part of the pci device.
 656  */
 657 static const char qat_comp_drv_name[] = RTE_STR(COMPRESSDEV_NAME_QAT_PMD);
 658 static const struct rte_driver compdev_qat_driver = {
 659         .name = qat_comp_drv_name,
 660         .alias = qat_comp_drv_name
 661 };
 662 int
 663 qat_comp_dev_create(struct qat_pci_device *qat_pci_dev)
 664 {
 665         if (qat_pci_dev->qat_dev_gen == QAT_GEN3) {
 666                 QAT_LOG(ERR, "Compression PMD not supported on QAT c4xxx");
 667                 return 0;
 668         }
 669
 670         struct rte_compressdev_pmd_init_params init_params = {
 671                 .name = "",
 672                 .socket_id = qat_pci_dev->pci_dev->device.numa_node,
 673         };
 674         char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
 675         struct rte_compressdev *compressdev;
 676         struct qat_comp_dev_private *comp_dev;
 677
 678         snprintf(name, RTE_COMPRESSDEV_NAME_MAX_LEN, "%s_%s",
 679                         qat_pci_dev->name, "comp");
 680         QAT_LOG(DEBUG, "Creating QAT COMP device %s", name);
 681
 682         /* Populate subset device to use in compressdev device creation */
 683         qat_pci_dev->comp_rte_dev.driver = &compdev_qat_driver;
 684         qat_pci_dev->comp_rte_dev.numa_node =
 685                                         qat_pci_dev->pci_dev->device.numa_node;
 686         qat_pci_dev->comp_rte_dev.devargs = NULL;
 687
 688         compressdev = rte_compressdev_pmd_create(name,
 689                         &(qat_pci_dev->comp_rte_dev),
 690                         sizeof(struct qat_comp_dev_private),
 691                         &init_params);
 692
 693         if (compressdev == NULL)
 694                 return -ENODEV;
 695
 696         compressdev->dev_ops = &compress_qat_ops;
 697
 698         compressdev->enqueue_burst = qat_comp_pmd_enqueue_op_burst;
 699         compressdev->dequeue_burst = qat_comp_pmd_dequeue_frst_op_burst;
 700
 701         compressdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
 702
 703         comp_dev = compressdev->data->dev_private;
 704         comp_dev->qat_dev = qat_pci_dev;
 705         comp_dev->compressdev = compressdev;
 706         qat_pci_dev->comp_dev = comp_dev;
 707
 708         switch (qat_pci_dev->qat_dev_gen) {
 709         case QAT_GEN1:
 710         case QAT_GEN2:
 711         case QAT_GEN3:
 712                 comp_dev->qat_dev_capabilities = qat_comp_gen_capabilities;
 713                 break;
 714         default:
 715                 comp_dev->qat_dev_capabilities = qat_comp_gen_capabilities;
 716                 QAT_LOG(DEBUG,
 717                         "QAT gen %d capabilities unknown, default to GEN1",
 718                                         qat_pci_dev->qat_dev_gen);
 719                 break;
 720         }
 721
 722         QAT_LOG(DEBUG,
 723                     "Created QAT COMP device %s as compressdev instance %d",
 724                         name, compressdev->data->dev_id);
 725         return 0;
 726 }
 727
 728 int
 729 qat_comp_dev_destroy(struct qat_pci_device *qat_pci_dev)
 730 {
 731         struct qat_comp_dev_private *comp_dev;
 732
 733         if (qat_pci_dev == NULL)
 734                 return -ENODEV;
 735
 736         comp_dev = qat_pci_dev->comp_dev;
 737         if (comp_dev == NULL)
 738                 return 0;
 739
 740         /* clean up any resources used by the device */
 741         qat_comp_dev_close(comp_dev->compressdev);
 742
 743         rte_compressdev_pmd_destroy(comp_dev->compressdev);
 744         qat_pci_dev->comp_dev = NULL;
 745
 746         return 0;
 747 }