ceph/src/seastar/dpdk/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
 173         return ret;
 174 }
 175
 176
 177 #define QAT_IM_BUFFER_DEBUG 0
 178 static const struct rte_memzone *
 179 qat_comp_setup_inter_buffers(struct qat_comp_dev_private *comp_dev,
 180                               uint32_t buff_size)
 181 {
 182         char inter_buff_mz_name[RTE_MEMZONE_NAMESIZE];
 183         const struct rte_memzone *memzone;
 184         uint8_t *mz_start = NULL;
 185         rte_iova_t mz_start_phys = 0;
 186         struct array_of_ptrs *array_of_pointers;
 187         int size_of_ptr_array;
 188         uint32_t full_size;
 189         uint32_t offset_of_sgls, offset_of_flat_buffs = 0;
 190         int i;
 191         int num_im_sgls = qat_gen_config[
 192                 comp_dev->qat_dev->qat_dev_gen].comp_num_im_bufs_required;
 193
 194         QAT_LOG(DEBUG, "QAT COMP device %s needs %d sgls",
 195                                 comp_dev->qat_dev->name, num_im_sgls);
 196         snprintf(inter_buff_mz_name, RTE_MEMZONE_NAMESIZE,
 197                                 "%s_inter_buff", comp_dev->qat_dev->name);
 198         memzone = rte_memzone_lookup(inter_buff_mz_name);
 199         if (memzone != NULL) {
 200                 QAT_LOG(DEBUG, "QAT COMP im buffer memzone created already");
 201                 return memzone;
 202         }
 203
 204         /* Create a memzone to hold intermediate buffers and associated
 205          * meta-data needed by the firmware. The memzone contains 3 parts:
 206          *  - a list of num_im_sgls physical pointers to sgls
 207          *  - the num_im_sgl sgl structures, each pointing to
 208          *    QAT_NUM_BUFS_IN_IM_SGL flat buffers
 209          *  - the flat buffers: num_im_sgl * QAT_NUM_BUFS_IN_IM_SGL
 210          *    buffers, each of buff_size
 211          * num_im_sgls depends on the hardware generation of the device
 212          * buff_size comes from the user via the config file
 213          */
 214
 215         size_of_ptr_array = num_im_sgls * sizeof(phys_addr_t);
 216         offset_of_sgls = (size_of_ptr_array + (~QAT_64_BYTE_ALIGN_MASK))
 217                         & QAT_64_BYTE_ALIGN_MASK;
 218         offset_of_flat_buffs =
 219             offset_of_sgls + num_im_sgls * sizeof(struct qat_inter_sgl);
 220         full_size = offset_of_flat_buffs +
 221                         num_im_sgls * buff_size * QAT_NUM_BUFS_IN_IM_SGL;
 222
 223         memzone = rte_memzone_reserve_aligned(inter_buff_mz_name, full_size,
 224                         comp_dev->compressdev->data->socket_id,
 225                         RTE_MEMZONE_IOVA_CONTIG, QAT_64_BYTE_ALIGN);
 226         if (memzone == NULL) {
 227                 QAT_LOG(ERR, "Can't allocate intermediate buffers"
 228                                 " for device %s", comp_dev->qat_dev->name);
 229                 return NULL;
 230         }
 231
 232         mz_start = (uint8_t *)memzone->addr;
 233         mz_start_phys = memzone->phys_addr;
 234         QAT_LOG(DEBUG, "Memzone %s: addr = %p, phys = 0x%"PRIx64
 235                         ", size required %d, size created %zu",
 236                         inter_buff_mz_name, mz_start, mz_start_phys,
 237                         full_size, memzone->len);
 238
 239         array_of_pointers = (struct array_of_ptrs *)mz_start;
 240         for (i = 0; i < num_im_sgls; i++) {
 241                 uint32_t curr_sgl_offset =
 242                     offset_of_sgls + i * sizeof(struct qat_inter_sgl);
 243                 struct qat_inter_sgl *sgl =
 244                     (struct qat_inter_sgl *)(mz_start + curr_sgl_offset);
 245                 int lb;
 246                 array_of_pointers->pointer[i] = mz_start_phys + curr_sgl_offset;
 247
 248                 sgl->num_bufs = QAT_NUM_BUFS_IN_IM_SGL;
 249                 sgl->num_mapped_bufs = 0;
 250                 sgl->resrvd = 0;
 251
 252 #if QAT_IM_BUFFER_DEBUG
 253                 QAT_LOG(DEBUG, "  : phys addr of sgl[%i] in array_of_pointers"
 254                         " = 0x%"PRIx64, i, array_of_pointers->pointer[i]);
 255                 QAT_LOG(DEBUG, "  : virt address of sgl[%i] = %p", i, sgl);
 256 #endif
 257                 for (lb = 0; lb < QAT_NUM_BUFS_IN_IM_SGL; lb++) {
 258                         sgl->buffers[lb].addr =
 259                           mz_start_phys + offset_of_flat_buffs +
 260                           (((i * QAT_NUM_BUFS_IN_IM_SGL) + lb) * buff_size);
 261                         sgl->buffers[lb].len = buff_size;
 262                         sgl->buffers[lb].resrvd = 0;
 263 #if QAT_IM_BUFFER_DEBUG
 264                         QAT_LOG(DEBUG,
 265                           "  : sgl->buffers[%d].addr = 0x%"PRIx64", len=%d",
 266                           lb, sgl->buffers[lb].addr, sgl->buffers[lb].len);
 267 #endif
 268                 }
 269         }
 270 #if QAT_IM_BUFFER_DEBUG
 271         QAT_DP_HEXDUMP_LOG(DEBUG,  "IM buffer memzone start:",
 272                         mz_start, offset_of_flat_buffs + 32);
 273 #endif
 274         return memzone;
 275 }
 276
 277 static struct rte_mempool *
 278 qat_comp_create_xform_pool(struct qat_comp_dev_private *comp_dev,
 279                            struct rte_compressdev_config *config,
 280                            uint32_t num_elements)
 281 {
 282         char xform_pool_name[RTE_MEMPOOL_NAMESIZE];
 283         struct rte_mempool *mp;
 284
 285         snprintf(xform_pool_name, RTE_MEMPOOL_NAMESIZE,
 286                         "%s_xforms", comp_dev->qat_dev->name);
 287
 288         QAT_LOG(DEBUG, "xformpool: %s", xform_pool_name);
 289         mp = rte_mempool_lookup(xform_pool_name);
 290
 291         if (mp != NULL) {
 292                 QAT_LOG(DEBUG, "xformpool already created");
 293                 if (mp->size != num_elements) {
 294                         QAT_LOG(DEBUG, "xformpool wrong size - delete it");
 295                         rte_mempool_free(mp);
 296                         mp = NULL;
 297                         comp_dev->xformpool = NULL;
 298                 }
 299         }
 300
 301         if (mp == NULL)
 302                 mp = rte_mempool_create(xform_pool_name,
 303                                 num_elements,
 304                                 qat_comp_xform_size(), 0, 0,
 305                                 NULL, NULL, NULL, NULL, config->socket_id,
 306                                 0);
 307         if (mp == NULL) {
 308                 QAT_LOG(ERR, "Err creating mempool %s w %d elements of size %d",
 309                         xform_pool_name, num_elements, qat_comp_xform_size());
 310                 return NULL;
 311         }
 312
 313         return mp;
 314 }
 315
 316 static void
 317 _qat_comp_dev_config_clear(struct qat_comp_dev_private *comp_dev)
 318 {
 319         /* Free intermediate buffers */
 320         if (comp_dev->interm_buff_mz) {
 321                 rte_memzone_free(comp_dev->interm_buff_mz);
 322                 comp_dev->interm_buff_mz = NULL;
 323         }
 324
 325         /* Free private_xform pool */
 326         if (comp_dev->xformpool) {
 327                 /* Free internal mempool for private xforms */
 328                 rte_mempool_free(comp_dev->xformpool);
 329                 comp_dev->xformpool = NULL;
 330         }
 331 }
 332
 333 static int
 334 qat_comp_dev_config(struct rte_compressdev *dev,
 335                 struct rte_compressdev_config *config)
 336 {
 337         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 338         int ret = 0;
 339
 340         if (config->max_nb_streams != 0) {
 341                 QAT_LOG(ERR,
 342         "QAT device does not support STATEFUL so max_nb_streams must be 0");
 343                 return -EINVAL;
 344         }
 345
 346         if (RTE_PMD_QAT_COMP_IM_BUFFER_SIZE == 0) {
 347                 QAT_LOG(WARNING,
 348                         "RTE_PMD_QAT_COMP_IM_BUFFER_SIZE = 0 in config file, so"
 349                         " QAT device can't be used for Dynamic Deflate. "
 350                         "Did you really intend to do this?");
 351         } else {
 352                 comp_dev->interm_buff_mz =
 353                                 qat_comp_setup_inter_buffers(comp_dev,
 354                                         RTE_PMD_QAT_COMP_IM_BUFFER_SIZE);
 355                 if (comp_dev->interm_buff_mz == NULL) {
 356                         ret = -ENOMEM;
 357                         goto error_out;
 358                 }
 359         }
 360
 361         comp_dev->xformpool = qat_comp_create_xform_pool(comp_dev, config,
 362                                         config->max_nb_priv_xforms);
 363         if (comp_dev->xformpool == NULL) {
 364
 365                 ret = -ENOMEM;
 366                 goto error_out;
 367         }
 368         return 0;
 369
 370 error_out:
 371         _qat_comp_dev_config_clear(comp_dev);
 372         return ret;
 373 }
 374
 375 static int
 376 qat_comp_dev_start(struct rte_compressdev *dev __rte_unused)
 377 {
 378         return 0;
 379 }
 380
 381 static void
 382 qat_comp_dev_stop(struct rte_compressdev *dev __rte_unused)
 383 {
 384
 385 }
 386
 387 static int
 388 qat_comp_dev_close(struct rte_compressdev *dev)
 389 {
 390         int i;
 391         int ret = 0;
 392         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 393
 394         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
 395                 ret = qat_comp_qp_release(dev, i);
 396                 if (ret < 0)
 397                         return ret;
 398         }
 399
 400         _qat_comp_dev_config_clear(comp_dev);
 401
 402         return ret;
 403 }
 404
 405
 406 static void
 407 qat_comp_dev_info_get(struct rte_compressdev *dev,
 408                         struct rte_compressdev_info *info)
 409 {
 410         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 411         const struct qat_qp_hw_data *comp_hw_qps =
 412                 qat_gen_config[comp_dev->qat_dev->qat_dev_gen]
 413                               .qp_hw_data[QAT_SERVICE_COMPRESSION];
 414
 415         if (info != NULL) {
 416                 info->max_nb_queue_pairs =
 417                         qat_qps_per_service(comp_hw_qps,
 418                                             QAT_SERVICE_COMPRESSION);
 419                 info->feature_flags = dev->feature_flags;
 420                 info->capabilities = comp_dev->qat_dev_capabilities;
 421         }
 422 }
 423
 424 static uint16_t
 425 qat_comp_pmd_enqueue_op_burst(void *qp, struct rte_comp_op **ops,
 426                 uint16_t nb_ops)
 427 {
 428         return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 429 }
 430
 431 static uint16_t
 432 qat_comp_pmd_dequeue_op_burst(void *qp, struct rte_comp_op **ops,
 433                               uint16_t nb_ops)
 434 {
 435         return qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 436 }
 437
 438 static uint16_t
 439 qat_comp_pmd_enq_deq_dummy_op_burst(void *qp __rte_unused,
 440                                     struct rte_comp_op **ops __rte_unused,
 441                                     uint16_t nb_ops __rte_unused)
 442 {
 443         QAT_DP_LOG(ERR, "QAT PMD detected wrong FW version !");
 444         return 0;
 445 }
 446
 447 static struct rte_compressdev_ops compress_qat_dummy_ops = {
 448
 449         /* Device related operations */
 450         .dev_configure          = NULL,
 451         .dev_start              = NULL,
 452         .dev_stop               = qat_comp_dev_stop,
 453         .dev_close              = qat_comp_dev_close,
 454         .dev_infos_get          = NULL,
 455
 456         .stats_get              = NULL,
 457         .stats_reset            = qat_comp_stats_reset,
 458         .queue_pair_setup       = NULL,
 459         .queue_pair_release     = qat_comp_qp_release,
 460
 461         /* Compression related operations */
 462         .private_xform_create   = NULL,
 463         .private_xform_free     = qat_comp_private_xform_free
 464 };
 465
 466 static uint16_t
 467 qat_comp_pmd_dequeue_frst_op_burst(void *qp, struct rte_comp_op **ops,
 468                                    uint16_t nb_ops)
 469 {
 470         uint16_t ret = qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 471         struct qat_qp *tmp_qp = (struct qat_qp *)qp;
 472
 473         if (ret) {
 474                 if ((*ops)->debug_status ==
 475                                 (uint64_t)ERR_CODE_QAT_COMP_WRONG_FW) {
 476                         tmp_qp->qat_dev->comp_dev->compressdev->enqueue_burst =
 477                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 478                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 479                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 480
 481                         tmp_qp->qat_dev->comp_dev->compressdev->dev_ops =
 482                                         &compress_qat_dummy_ops;
 483                         QAT_LOG(ERR, "QAT PMD detected wrong FW version !");
 484
 485                 } else {
 486                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 487                                         qat_comp_pmd_dequeue_op_burst;
 488                 }
 489         }
 490         return ret;
 491 }
 492
 493 static struct rte_compressdev_ops compress_qat_ops = {
 494
 495         /* Device related operations */
 496         .dev_configure          = qat_comp_dev_config,
 497         .dev_start              = qat_comp_dev_start,
 498         .dev_stop               = qat_comp_dev_stop,
 499         .dev_close              = qat_comp_dev_close,
 500         .dev_infos_get          = qat_comp_dev_info_get,
 501
 502         .stats_get              = qat_comp_stats_get,
 503         .stats_reset            = qat_comp_stats_reset,
 504         .queue_pair_setup       = qat_comp_qp_setup,
 505         .queue_pair_release     = qat_comp_qp_release,
 506
 507         /* Compression related operations */
 508         .private_xform_create   = qat_comp_private_xform_create,
 509         .private_xform_free     = qat_comp_private_xform_free
 510 };
 511
 512 /* An rte_driver is needed in the registration of the device with compressdev.
 513  * The actual qat pci's rte_driver can't be used as its name represents
 514  * the whole pci device with all services. Think of this as a holder for a name
 515  * for the compression part of the pci device.
 516  */
 517 static const char qat_comp_drv_name[] = RTE_STR(COMPRESSDEV_NAME_QAT_PMD);
 518 static const struct rte_driver compdev_qat_driver = {
 519         .name = qat_comp_drv_name,
 520         .alias = qat_comp_drv_name
 521 };
 522 int
 523 qat_comp_dev_create(struct qat_pci_device *qat_pci_dev)
 524 {
 525         if (qat_pci_dev->qat_dev_gen == QAT_GEN3) {
 526                 QAT_LOG(ERR, "Compression PMD not supported on QAT c4xxx");
 527                 return 0;
 528         }
 529
 530         struct rte_compressdev_pmd_init_params init_params = {
 531                 .name = "",
 532                 .socket_id = qat_pci_dev->pci_dev->device.numa_node,
 533         };
 534         char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
 535         struct rte_compressdev *compressdev;
 536         struct qat_comp_dev_private *comp_dev;
 537
 538         snprintf(name, RTE_COMPRESSDEV_NAME_MAX_LEN, "%s_%s",
 539                         qat_pci_dev->name, "comp");
 540         QAT_LOG(DEBUG, "Creating QAT COMP device %s", name);
 541
 542         /* Populate subset device to use in compressdev device creation */
 543         qat_pci_dev->comp_rte_dev.driver = &compdev_qat_driver;
 544         qat_pci_dev->comp_rte_dev.numa_node =
 545                                         qat_pci_dev->pci_dev->device.numa_node;
 546         qat_pci_dev->comp_rte_dev.devargs = NULL;
 547
 548         compressdev = rte_compressdev_pmd_create(name,
 549                         &(qat_pci_dev->comp_rte_dev),
 550                         sizeof(struct qat_comp_dev_private),
 551                         &init_params);
 552
 553         if (compressdev == NULL)
 554                 return -ENODEV;
 555
 556         compressdev->dev_ops = &compress_qat_ops;
 557
 558         compressdev->enqueue_burst = qat_comp_pmd_enqueue_op_burst;
 559         compressdev->dequeue_burst = qat_comp_pmd_dequeue_frst_op_burst;
 560
 561         compressdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
 562
 563         comp_dev = compressdev->data->dev_private;
 564         comp_dev->qat_dev = qat_pci_dev;
 565         comp_dev->compressdev = compressdev;
 566         qat_pci_dev->comp_dev = comp_dev;
 567
 568         switch (qat_pci_dev->qat_dev_gen) {
 569         case QAT_GEN1:
 570         case QAT_GEN2:
 571         case QAT_GEN3:
 572                 comp_dev->qat_dev_capabilities = qat_comp_gen_capabilities;
 573                 break;
 574         default:
 575                 comp_dev->qat_dev_capabilities = qat_comp_gen_capabilities;
 576                 QAT_LOG(DEBUG,
 577                         "QAT gen %d capabilities unknown, default to GEN1",
 578                                         qat_pci_dev->qat_dev_gen);
 579                 break;
 580         }
 581
 582         QAT_LOG(DEBUG,
 583                     "Created QAT COMP device %s as compressdev instance %d",
 584                         name, compressdev->data->dev_id);
 585         return 0;
 586 }
 587
 588 int
 589 qat_comp_dev_destroy(struct qat_pci_device *qat_pci_dev)
 590 {
 591         struct qat_comp_dev_private *comp_dev;
 592
 593         if (qat_pci_dev == NULL)
 594                 return -ENODEV;
 595
 596         comp_dev = qat_pci_dev->comp_dev;
 597         if (comp_dev == NULL)
 598                 return 0;
 599
 600         /* clean up any resources used by the device */
 601         qat_comp_dev_close(comp_dev->compressdev);
 602
 603         rte_compressdev_pmd_destroy(comp_dev->compressdev);
 604         qat_pci_dev->comp_dev = NULL;
 605
 606         return 0;
 607 }