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         qp->min_enq_burst_threshold = qat_private->min_enq_burst_threshold;
 143
 144         for (i = 0; i < qp->nb_descriptors; i++) {
 145
 146                 struct qat_comp_op_cookie *cookie =
 147                                 qp->op_cookies[i];
 148
 149                 cookie->qp = qp;
 150                 cookie->cookie_index = i;
 151
 152                 cookie->qat_sgl_src_d = rte_zmalloc_socket(NULL,
 153                                         sizeof(struct qat_sgl) +
 154                                         sizeof(struct qat_flat_buf) *
 155                                         QAT_PMD_COMP_SGL_DEF_SEGMENTS,
 156                                         64, dev->data->socket_id);
 157
 158                 cookie->qat_sgl_dst_d = rte_zmalloc_socket(NULL,
 159                                         sizeof(struct qat_sgl) +
 160                                         sizeof(struct qat_flat_buf) *
 161                                         QAT_PMD_COMP_SGL_DEF_SEGMENTS,
 162                                         64, dev->data->socket_id);
 163
 164                 if (cookie->qat_sgl_src_d == NULL ||
 165                                 cookie->qat_sgl_dst_d == NULL) {
 166                         QAT_LOG(ERR, "Can't allocate SGL"
 167                                      " for device %s",
 168                                      qat_private->qat_dev->name);
 169                         return -ENOMEM;
 170                 }
 171
 172                 cookie->qat_sgl_src_phys_addr =
 173                                 rte_malloc_virt2iova(cookie->qat_sgl_src_d);
 174
 175                 cookie->qat_sgl_dst_phys_addr =
 176                                 rte_malloc_virt2iova(cookie->qat_sgl_dst_d);
 177
 178                 cookie->dst_nb_elems = cookie->src_nb_elems =
 179                                 QAT_PMD_COMP_SGL_DEF_SEGMENTS;
 180
 181                 cookie->socket_id = dev->data->socket_id;
 182
 183                 cookie->error = 0;
 184         }
 185
 186         return ret;
 187 }
 188
 189
 190 #define QAT_IM_BUFFER_DEBUG 0
 191 static const struct rte_memzone *
 192 qat_comp_setup_inter_buffers(struct qat_comp_dev_private *comp_dev,
 193                               uint32_t buff_size)
 194 {
 195         char inter_buff_mz_name[RTE_MEMZONE_NAMESIZE];
 196         const struct rte_memzone *memzone;
 197         uint8_t *mz_start = NULL;
 198         rte_iova_t mz_start_phys = 0;
 199         struct array_of_ptrs *array_of_pointers;
 200         int size_of_ptr_array;
 201         uint32_t full_size;
 202         uint32_t offset_of_sgls, offset_of_flat_buffs = 0;
 203         int i;
 204         int num_im_sgls = qat_gen_config[
 205                 comp_dev->qat_dev->qat_dev_gen].comp_num_im_bufs_required;
 206
 207         QAT_LOG(DEBUG, "QAT COMP device %s needs %d sgls",
 208                                 comp_dev->qat_dev->name, num_im_sgls);
 209         snprintf(inter_buff_mz_name, RTE_MEMZONE_NAMESIZE,
 210                                 "%s_inter_buff", comp_dev->qat_dev->name);
 211         memzone = rte_memzone_lookup(inter_buff_mz_name);
 212         if (memzone != NULL) {
 213                 QAT_LOG(DEBUG, "QAT COMP im buffer memzone created already");
 214                 return memzone;
 215         }
 216
 217         /* Create a memzone to hold intermediate buffers and associated
 218          * meta-data needed by the firmware. The memzone contains 3 parts:
 219          *  - a list of num_im_sgls physical pointers to sgls
 220          *  - the num_im_sgl sgl structures, each pointing to
 221          *    QAT_NUM_BUFS_IN_IM_SGL flat buffers
 222          *  - the flat buffers: num_im_sgl * QAT_NUM_BUFS_IN_IM_SGL
 223          *    buffers, each of buff_size
 224          * num_im_sgls depends on the hardware generation of the device
 225          * buff_size comes from the user via the config file
 226          */
 227
 228         size_of_ptr_array = num_im_sgls * sizeof(phys_addr_t);
 229         offset_of_sgls = (size_of_ptr_array + (~QAT_64_BYTE_ALIGN_MASK))
 230                         & QAT_64_BYTE_ALIGN_MASK;
 231         offset_of_flat_buffs =
 232             offset_of_sgls + num_im_sgls * sizeof(struct qat_inter_sgl);
 233         full_size = offset_of_flat_buffs +
 234                         num_im_sgls * buff_size * QAT_NUM_BUFS_IN_IM_SGL;
 235
 236         memzone = rte_memzone_reserve_aligned(inter_buff_mz_name, full_size,
 237                         comp_dev->compressdev->data->socket_id,
 238                         RTE_MEMZONE_IOVA_CONTIG, QAT_64_BYTE_ALIGN);
 239         if (memzone == NULL) {
 240                 QAT_LOG(ERR, "Can't allocate intermediate buffers"
 241                                 " for device %s", comp_dev->qat_dev->name);
 242                 return NULL;
 243         }
 244
 245         mz_start = (uint8_t *)memzone->addr;
 246         mz_start_phys = memzone->phys_addr;
 247         QAT_LOG(DEBUG, "Memzone %s: addr = %p, phys = 0x%"PRIx64
 248                         ", size required %d, size created %zu",
 249                         inter_buff_mz_name, mz_start, mz_start_phys,
 250                         full_size, memzone->len);
 251
 252         array_of_pointers = (struct array_of_ptrs *)mz_start;
 253         for (i = 0; i < num_im_sgls; i++) {
 254                 uint32_t curr_sgl_offset =
 255                     offset_of_sgls + i * sizeof(struct qat_inter_sgl);
 256                 struct qat_inter_sgl *sgl =
 257                     (struct qat_inter_sgl *)(mz_start + curr_sgl_offset);
 258                 int lb;
 259                 array_of_pointers->pointer[i] = mz_start_phys + curr_sgl_offset;
 260
 261                 sgl->num_bufs = QAT_NUM_BUFS_IN_IM_SGL;
 262                 sgl->num_mapped_bufs = 0;
 263                 sgl->resrvd = 0;
 264
 265 #if QAT_IM_BUFFER_DEBUG
 266                 QAT_LOG(DEBUG, "  : phys addr of sgl[%i] in array_of_pointers"
 267                         " = 0x%"PRIx64, i, array_of_pointers->pointer[i]);
 268                 QAT_LOG(DEBUG, "  : virt address of sgl[%i] = %p", i, sgl);
 269 #endif
 270                 for (lb = 0; lb < QAT_NUM_BUFS_IN_IM_SGL; lb++) {
 271                         sgl->buffers[lb].addr =
 272                           mz_start_phys + offset_of_flat_buffs +
 273                           (((i * QAT_NUM_BUFS_IN_IM_SGL) + lb) * buff_size);
 274                         sgl->buffers[lb].len = buff_size;
 275                         sgl->buffers[lb].resrvd = 0;
 276 #if QAT_IM_BUFFER_DEBUG
 277                         QAT_LOG(DEBUG,
 278                           "  : sgl->buffers[%d].addr = 0x%"PRIx64", len=%d",
 279                           lb, sgl->buffers[lb].addr, sgl->buffers[lb].len);
 280 #endif
 281                 }
 282         }
 283 #if QAT_IM_BUFFER_DEBUG
 284         QAT_DP_HEXDUMP_LOG(DEBUG,  "IM buffer memzone start:",
 285                         mz_start, offset_of_flat_buffs + 32);
 286 #endif
 287         return memzone;
 288 }
 289
 290 static struct rte_mempool *
 291 qat_comp_create_xform_pool(struct qat_comp_dev_private *comp_dev,
 292                            struct rte_compressdev_config *config,
 293                            uint32_t num_elements)
 294 {
 295         char xform_pool_name[RTE_MEMPOOL_NAMESIZE];
 296         struct rte_mempool *mp;
 297
 298         snprintf(xform_pool_name, RTE_MEMPOOL_NAMESIZE,
 299                         "%s_xforms", comp_dev->qat_dev->name);
 300
 301         QAT_LOG(DEBUG, "xformpool: %s", xform_pool_name);
 302         mp = rte_mempool_lookup(xform_pool_name);
 303
 304         if (mp != NULL) {
 305                 QAT_LOG(DEBUG, "xformpool already created");
 306                 if (mp->size != num_elements) {
 307                         QAT_LOG(DEBUG, "xformpool wrong size - delete it");
 308                         rte_mempool_free(mp);
 309                         mp = NULL;
 310                         comp_dev->xformpool = NULL;
 311                 }
 312         }
 313
 314         if (mp == NULL)
 315                 mp = rte_mempool_create(xform_pool_name,
 316                                 num_elements,
 317                                 qat_comp_xform_size(), 0, 0,
 318                                 NULL, NULL, NULL, NULL, config->socket_id,
 319                                 0);
 320         if (mp == NULL) {
 321                 QAT_LOG(ERR, "Err creating mempool %s w %d elements of size %d",
 322                         xform_pool_name, num_elements, qat_comp_xform_size());
 323                 return NULL;
 324         }
 325
 326         return mp;
 327 }
 328
 329 static void
 330 qat_comp_stream_init(struct rte_mempool *mp __rte_unused, void *opaque,
 331                      void *obj, unsigned int obj_idx)
 332 {
 333         struct stream_create_info *info = opaque;
 334         struct qat_comp_stream *stream = obj;
 335         char mz_name[RTE_MEMZONE_NAMESIZE];
 336         const struct rte_memzone *memzone;
 337         struct qat_inter_sgl *ram_banks_desc;
 338
 339         /* find a memzone for RAM banks */
 340         snprintf(mz_name, RTE_MEMZONE_NAMESIZE, "%s_%u_rambanks",
 341                  info->comp_dev->qat_dev->name, obj_idx);
 342         memzone = rte_memzone_lookup(mz_name);
 343         if (memzone == NULL) {
 344                 /* allocate a memzone for compression state and RAM banks */
 345                 memzone = rte_memzone_reserve_aligned(mz_name,
 346                         QAT_STATE_REGISTERS_MAX_SIZE
 347                                 + sizeof(struct qat_inter_sgl)
 348                                 + QAT_INFLATE_CONTEXT_SIZE,
 349                         info->socket_id,
 350                         RTE_MEMZONE_IOVA_CONTIG, QAT_64_BYTE_ALIGN);
 351                 if (memzone == NULL) {
 352                         QAT_LOG(ERR,
 353                             "Can't allocate RAM banks for device %s, object %u",
 354                                 info->comp_dev->qat_dev->name, obj_idx);
 355                         info->error = -ENOMEM;
 356                         return;
 357                 }
 358         }
 359
 360         /* prepare the buffer list descriptor for RAM banks */
 361         ram_banks_desc = (struct qat_inter_sgl *)
 362                 (((uint8_t *) memzone->addr) + QAT_STATE_REGISTERS_MAX_SIZE);
 363         ram_banks_desc->num_bufs = 1;
 364         ram_banks_desc->buffers[0].len = QAT_INFLATE_CONTEXT_SIZE;
 365         ram_banks_desc->buffers[0].addr = memzone->iova
 366                         + QAT_STATE_REGISTERS_MAX_SIZE
 367                         + sizeof(struct qat_inter_sgl);
 368
 369         memset(stream, 0, qat_comp_stream_size());
 370         stream->memzone = memzone;
 371         stream->state_registers_decomp = memzone->addr;
 372         stream->state_registers_decomp_phys = memzone->iova;
 373         stream->inflate_context = ((uint8_t *) memzone->addr)
 374                         + QAT_STATE_REGISTERS_MAX_SIZE;
 375         stream->inflate_context_phys = memzone->iova
 376                         + QAT_STATE_REGISTERS_MAX_SIZE;
 377 }
 378
 379 static void
 380 qat_comp_stream_destroy(struct rte_mempool *mp __rte_unused,
 381                         void *opaque __rte_unused, void *obj,
 382                         unsigned obj_idx __rte_unused)
 383 {
 384         struct qat_comp_stream *stream = obj;
 385
 386         rte_memzone_free(stream->memzone);
 387 }
 388
 389 static struct rte_mempool *
 390 qat_comp_create_stream_pool(struct qat_comp_dev_private *comp_dev,
 391                             int socket_id,
 392                             uint32_t num_elements)
 393 {
 394         char stream_pool_name[RTE_MEMPOOL_NAMESIZE];
 395         struct rte_mempool *mp;
 396
 397         snprintf(stream_pool_name, RTE_MEMPOOL_NAMESIZE,
 398                  "%s_streams", comp_dev->qat_dev->name);
 399
 400         QAT_LOG(DEBUG, "streampool: %s", stream_pool_name);
 401         mp = rte_mempool_lookup(stream_pool_name);
 402
 403         if (mp != NULL) {
 404                 QAT_LOG(DEBUG, "streampool already created");
 405                 if (mp->size != num_elements) {
 406                         QAT_LOG(DEBUG, "streampool wrong size - delete it");
 407                         rte_mempool_obj_iter(mp, qat_comp_stream_destroy, NULL);
 408                         rte_mempool_free(mp);
 409                         mp = NULL;
 410                         comp_dev->streampool = NULL;
 411                 }
 412         }
 413
 414         if (mp == NULL) {
 415                 struct stream_create_info info = {
 416                         .comp_dev = comp_dev,
 417                         .socket_id = socket_id,
 418                         .error = 0
 419                 };
 420                 mp = rte_mempool_create(stream_pool_name,
 421                                 num_elements,
 422                                 qat_comp_stream_size(), 0, 0,
 423                                 NULL, NULL, qat_comp_stream_init, &info,
 424                                 socket_id, 0);
 425                 if (mp == NULL) {
 426                         QAT_LOG(ERR,
 427                              "Err creating mempool %s w %d elements of size %d",
 428                              stream_pool_name, num_elements,
 429                              qat_comp_stream_size());
 430                 } else if (info.error) {
 431                         rte_mempool_obj_iter(mp, qat_comp_stream_destroy, NULL);
 432                         QAT_LOG(ERR,
 433                              "Destoying mempool %s as at least one element failed initialisation",
 434                              stream_pool_name);
 435                         rte_mempool_free(mp);
 436                         mp = NULL;
 437                 }
 438         }
 439
 440         return mp;
 441 }
 442
 443 static void
 444 _qat_comp_dev_config_clear(struct qat_comp_dev_private *comp_dev)
 445 {
 446         /* Free intermediate buffers */
 447         if (comp_dev->interm_buff_mz) {
 448                 rte_memzone_free(comp_dev->interm_buff_mz);
 449                 comp_dev->interm_buff_mz = NULL;
 450         }
 451
 452         /* Free private_xform pool */
 453         if (comp_dev->xformpool) {
 454                 /* Free internal mempool for private xforms */
 455                 rte_mempool_free(comp_dev->xformpool);
 456                 comp_dev->xformpool = NULL;
 457         }
 458
 459         /* Free stream pool */
 460         if (comp_dev->streampool) {
 461                 rte_mempool_obj_iter(comp_dev->streampool,
 462                                      qat_comp_stream_destroy, NULL);
 463                 rte_mempool_free(comp_dev->streampool);
 464                 comp_dev->streampool = NULL;
 465         }
 466 }
 467
 468 static int
 469 qat_comp_dev_config(struct rte_compressdev *dev,
 470                 struct rte_compressdev_config *config)
 471 {
 472         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 473         int ret = 0;
 474
 475         if (RTE_PMD_QAT_COMP_IM_BUFFER_SIZE == 0) {
 476                 QAT_LOG(WARNING,
 477                         "RTE_PMD_QAT_COMP_IM_BUFFER_SIZE = 0 in config file, so"
 478                         " QAT device can't be used for Dynamic Deflate. "
 479                         "Did you really intend to do this?");
 480         } else {
 481                 comp_dev->interm_buff_mz =
 482                                 qat_comp_setup_inter_buffers(comp_dev,
 483                                         RTE_PMD_QAT_COMP_IM_BUFFER_SIZE);
 484                 if (comp_dev->interm_buff_mz == NULL) {
 485                         ret = -ENOMEM;
 486                         goto error_out;
 487                 }
 488         }
 489
 490         if (config->max_nb_priv_xforms) {
 491                 comp_dev->xformpool = qat_comp_create_xform_pool(comp_dev,
 492                                             config, config->max_nb_priv_xforms);
 493                 if (comp_dev->xformpool == NULL) {
 494                         ret = -ENOMEM;
 495                         goto error_out;
 496                 }
 497         } else
 498                 comp_dev->xformpool = NULL;
 499
 500         if (config->max_nb_streams) {
 501                 comp_dev->streampool = qat_comp_create_stream_pool(comp_dev,
 502                                      config->socket_id, config->max_nb_streams);
 503                 if (comp_dev->streampool == NULL) {
 504                         ret = -ENOMEM;
 505                         goto error_out;
 506                 }
 507         } else
 508                 comp_dev->streampool = NULL;
 509
 510         return 0;
 511
 512 error_out:
 513         _qat_comp_dev_config_clear(comp_dev);
 514         return ret;
 515 }
 516
 517 static int
 518 qat_comp_dev_start(struct rte_compressdev *dev __rte_unused)
 519 {
 520         return 0;
 521 }
 522
 523 static void
 524 qat_comp_dev_stop(struct rte_compressdev *dev __rte_unused)
 525 {
 526
 527 }
 528
 529 static int
 530 qat_comp_dev_close(struct rte_compressdev *dev)
 531 {
 532         int i;
 533         int ret = 0;
 534         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 535
 536         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
 537                 ret = qat_comp_qp_release(dev, i);
 538                 if (ret < 0)
 539                         return ret;
 540         }
 541
 542         _qat_comp_dev_config_clear(comp_dev);
 543
 544         return ret;
 545 }
 546
 547
 548 static void
 549 qat_comp_dev_info_get(struct rte_compressdev *dev,
 550                         struct rte_compressdev_info *info)
 551 {
 552         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 553         const struct qat_qp_hw_data *comp_hw_qps =
 554                 qat_gen_config[comp_dev->qat_dev->qat_dev_gen]
 555                               .qp_hw_data[QAT_SERVICE_COMPRESSION];
 556
 557         if (info != NULL) {
 558                 info->max_nb_queue_pairs =
 559                         qat_qps_per_service(comp_hw_qps,
 560                                             QAT_SERVICE_COMPRESSION);
 561                 info->feature_flags = dev->feature_flags;
 562                 info->capabilities = comp_dev->qat_dev_capabilities;
 563         }
 564 }
 565
 566 static uint16_t
 567 qat_comp_pmd_enq_deq_dummy_op_burst(void *qp __rte_unused,
 568                                     struct rte_comp_op **ops __rte_unused,
 569                                     uint16_t nb_ops __rte_unused)
 570 {
 571         QAT_DP_LOG(ERR, "QAT PMD detected wrong FW version !");
 572         return 0;
 573 }
 574
 575 static struct rte_compressdev_ops compress_qat_dummy_ops = {
 576
 577         /* Device related operations */
 578         .dev_configure          = NULL,
 579         .dev_start              = NULL,
 580         .dev_stop               = qat_comp_dev_stop,
 581         .dev_close              = qat_comp_dev_close,
 582         .dev_infos_get          = NULL,
 583
 584         .stats_get              = NULL,
 585         .stats_reset            = qat_comp_stats_reset,
 586         .queue_pair_setup       = NULL,
 587         .queue_pair_release     = qat_comp_qp_release,
 588
 589         /* Compression related operations */
 590         .private_xform_create   = NULL,
 591         .private_xform_free     = qat_comp_private_xform_free
 592 };
 593
 594 static uint16_t
 595 qat_comp_pmd_dequeue_first_op_burst(void *qp, struct rte_comp_op **ops,
 596                                    uint16_t nb_ops)
 597 {
 598         uint16_t ret = qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 599         struct qat_qp *tmp_qp = (struct qat_qp *)qp;
 600
 601         if (ret) {
 602                 if ((*ops)->debug_status ==
 603                                 (uint64_t)ERR_CODE_QAT_COMP_WRONG_FW) {
 604                         tmp_qp->qat_dev->comp_dev->compressdev->enqueue_burst =
 605                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 606                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 607                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 608
 609                         tmp_qp->qat_dev->comp_dev->compressdev->dev_ops =
 610                                         &compress_qat_dummy_ops;
 611                         QAT_LOG(ERR, "QAT PMD detected wrong FW version !");
 612
 613                 } else {
 614                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 615                                         (compressdev_dequeue_pkt_burst_t)
 616                                         qat_dequeue_op_burst;
 617                 }
 618         }
 619         return ret;
 620 }
 621
 622 static struct rte_compressdev_ops compress_qat_ops = {
 623
 624         /* Device related operations */
 625         .dev_configure          = qat_comp_dev_config,
 626         .dev_start              = qat_comp_dev_start,
 627         .dev_stop               = qat_comp_dev_stop,
 628         .dev_close              = qat_comp_dev_close,
 629         .dev_infos_get          = qat_comp_dev_info_get,
 630
 631         .stats_get              = qat_comp_stats_get,
 632         .stats_reset            = qat_comp_stats_reset,
 633         .queue_pair_setup       = qat_comp_qp_setup,
 634         .queue_pair_release     = qat_comp_qp_release,
 635
 636         /* Compression related operations */
 637         .private_xform_create   = qat_comp_private_xform_create,
 638         .private_xform_free     = qat_comp_private_xform_free,
 639         .stream_create          = qat_comp_stream_create,
 640         .stream_free            = qat_comp_stream_free
 641 };
 642
 643 /* An rte_driver is needed in the registration of the device with compressdev.
 644  * The actual qat pci's rte_driver can't be used as its name represents
 645  * the whole pci device with all services. Think of this as a holder for a name
 646  * for the compression part of the pci device.
 647  */
 648 static const char qat_comp_drv_name[] = RTE_STR(COMPRESSDEV_NAME_QAT_PMD);
 649 static const struct rte_driver compdev_qat_driver = {
 650         .name = qat_comp_drv_name,
 651         .alias = qat_comp_drv_name
 652 };
 653 int
 654 qat_comp_dev_create(struct qat_pci_device *qat_pci_dev,
 655                 struct qat_dev_cmd_param *qat_dev_cmd_param)
 656 {
 657         int i = 0;
 658         struct qat_device_info *qat_dev_instance =
 659                         &qat_pci_devs[qat_pci_dev->qat_dev_id];
 660         if (qat_pci_dev->qat_dev_gen == QAT_GEN3) {
 661                 QAT_LOG(ERR, "Compression PMD not supported on QAT P5xxx");
 662                 return 0;
 663         }
 664
 665         struct rte_compressdev_pmd_init_params init_params = {
 666                 .name = "",
 667                 .socket_id = qat_dev_instance->pci_dev->device.numa_node,
 668         };
 669         char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
 670         char capa_memz_name[RTE_COMPRESSDEV_NAME_MAX_LEN];
 671         struct rte_compressdev *compressdev;
 672         struct qat_comp_dev_private *comp_dev;
 673         const struct rte_compressdev_capabilities *capabilities;
 674         uint64_t capa_size;
 675
 676         snprintf(name, RTE_COMPRESSDEV_NAME_MAX_LEN, "%s_%s",
 677                         qat_pci_dev->name, "comp");
 678         QAT_LOG(DEBUG, "Creating QAT COMP device %s", name);
 679
 680         /* Populate subset device to use in compressdev device creation */
 681         qat_dev_instance->comp_rte_dev.driver = &compdev_qat_driver;
 682         qat_dev_instance->comp_rte_dev.numa_node =
 683                         qat_dev_instance->pci_dev->device.numa_node;
 684         qat_dev_instance->comp_rte_dev.devargs = NULL;
 685
 686         compressdev = rte_compressdev_pmd_create(name,
 687                         &(qat_dev_instance->comp_rte_dev),
 688                         sizeof(struct qat_comp_dev_private),
 689                         &init_params);
 690
 691         if (compressdev == NULL)
 692                 return -ENODEV;
 693
 694         compressdev->dev_ops = &compress_qat_ops;
 695
 696         compressdev->enqueue_burst = (compressdev_enqueue_pkt_burst_t)
 697                         qat_enqueue_comp_op_burst;
 698         compressdev->dequeue_burst = qat_comp_pmd_dequeue_first_op_burst;
 699
 700         compressdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
 701
 702         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 703                 return 0;
 704
 705         snprintf(capa_memz_name, RTE_COMPRESSDEV_NAME_MAX_LEN,
 706                         "QAT_COMP_CAPA_GEN_%d",
 707                         qat_pci_dev->qat_dev_gen);
 708
 709         comp_dev = compressdev->data->dev_private;
 710         comp_dev->qat_dev = qat_pci_dev;
 711         comp_dev->compressdev = compressdev;
 712
 713         switch (qat_pci_dev->qat_dev_gen) {
 714         case QAT_GEN1:
 715         case QAT_GEN2:
 716         case QAT_GEN3:
 717                 capabilities = qat_comp_gen_capabilities;
 718                 capa_size = sizeof(qat_comp_gen_capabilities);
 719                 break;
 720         default:
 721                 capabilities = qat_comp_gen_capabilities;
 722                 capa_size = sizeof(qat_comp_gen_capabilities);
 723                 QAT_LOG(DEBUG,
 724                         "QAT gen %d capabilities unknown, default to GEN1",
 725                                         qat_pci_dev->qat_dev_gen);
 726                 break;
 727         }
 728
 729         comp_dev->capa_mz = rte_memzone_lookup(capa_memz_name);
 730         if (comp_dev->capa_mz == NULL) {
 731                 comp_dev->capa_mz = rte_memzone_reserve(capa_memz_name,
 732                         capa_size,
 733                         rte_socket_id(), 0);
 734         }
 735         if (comp_dev->capa_mz == NULL) {
 736                 QAT_LOG(DEBUG,
 737                         "Error allocating memzone for capabilities, destroying PMD for %s",
 738                         name);
 739                 memset(&qat_dev_instance->comp_rte_dev, 0,
 740                         sizeof(qat_dev_instance->comp_rte_dev));
 741                 rte_compressdev_pmd_destroy(compressdev);
 742                 return -EFAULT;
 743         }
 744
 745         memcpy(comp_dev->capa_mz->addr, capabilities, capa_size);
 746         comp_dev->qat_dev_capabilities = comp_dev->capa_mz->addr;
 747
 748         while (1) {
 749                 if (qat_dev_cmd_param[i].name == NULL)
 750                         break;
 751                 if (!strcmp(qat_dev_cmd_param[i].name, COMP_ENQ_THRESHOLD_NAME))
 752                         comp_dev->min_enq_burst_threshold =
 753                                         qat_dev_cmd_param[i].val;
 754                 i++;
 755         }
 756         qat_pci_dev->comp_dev = comp_dev;
 757
 758         QAT_LOG(DEBUG,
 759                     "Created QAT COMP device %s as compressdev instance %d",
 760                         name, compressdev->data->dev_id);
 761         return 0;
 762 }
 763
 764 int
 765 qat_comp_dev_destroy(struct qat_pci_device *qat_pci_dev)
 766 {
 767         struct qat_comp_dev_private *comp_dev;
 768
 769         if (qat_pci_dev == NULL)
 770                 return -ENODEV;
 771
 772         comp_dev = qat_pci_dev->comp_dev;
 773         if (comp_dev == NULL)
 774                 return 0;
 775
 776         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 777                 rte_memzone_free(qat_pci_dev->comp_dev->capa_mz);
 778
 779         /* clean up any resources used by the device */
 780         qat_comp_dev_close(comp_dev->compressdev);
 781
 782         rte_compressdev_pmd_destroy(comp_dev->compressdev);
 783         qat_pci_dev->comp_dev = NULL;
 784
 785         return 0;
 786 }