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