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