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.cookie_size = sizeof(struct qat_comp_op_cookie);
 128         qat_qp_conf.nb_descriptors = max_inflight_ops;
 129         qat_qp_conf.socket_id = socket_id;
 130         qat_qp_conf.service_str = "comp";
 131
 132         ret = qat_qp_setup(qat_private->qat_dev, qp_addr, qp_id, &qat_qp_conf);
 133         if (ret != 0)
 134                 return ret;
 135
 136         /* store a link to the qp in the qat_pci_device */
 137         qat_private->qat_dev->qps_in_use[QAT_SERVICE_COMPRESSION][qp_id]
 138                                                                 = *qp_addr;
 139
 140         qp = (struct qat_qp *)*qp_addr;
 141         qp->min_enq_burst_threshold = qat_private->min_enq_burst_threshold;
 142
 143         for (i = 0; i < qp->nb_descriptors; i++) {
 144
 145                 struct qat_comp_op_cookie *cookie =
 146                                 qp->op_cookies[i];
 147
 148                 cookie->qp = qp;
 149                 cookie->cookie_index = i;
 150
 151                 cookie->qat_sgl_src_d = rte_zmalloc_socket(NULL,
 152                                         sizeof(struct qat_sgl) +
 153                                         sizeof(struct qat_flat_buf) *
 154                                         QAT_PMD_COMP_SGL_DEF_SEGMENTS,
 155                                         64, dev->data->socket_id);
 156
 157                 cookie->qat_sgl_dst_d = rte_zmalloc_socket(NULL,
 158                                         sizeof(struct qat_sgl) +
 159                                         sizeof(struct qat_flat_buf) *
 160                                         QAT_PMD_COMP_SGL_DEF_SEGMENTS,
 161                                         64, dev->data->socket_id);
 162
 163                 if (cookie->qat_sgl_src_d == NULL ||
 164                                 cookie->qat_sgl_dst_d == NULL) {
 165                         QAT_LOG(ERR, "Can't allocate SGL"
 166                                      " for device %s",
 167                                      qat_private->qat_dev->name);
 168                         return -ENOMEM;
 169                 }
 170
 171                 cookie->qat_sgl_src_phys_addr =
 172                                 rte_malloc_virt2iova(cookie->qat_sgl_src_d);
 173
 174                 cookie->qat_sgl_dst_phys_addr =
 175                                 rte_malloc_virt2iova(cookie->qat_sgl_dst_d);
 176
 177                 cookie->dst_nb_elems = cookie->src_nb_elems =
 178                                 QAT_PMD_COMP_SGL_DEF_SEGMENTS;
 179
 180                 cookie->socket_id = dev->data->socket_id;
 181
 182                 cookie->error = 0;
 183         }
 184
 185         return ret;
 186 }
 187
 188
 189 #define QAT_IM_BUFFER_DEBUG 0
 190 static const struct rte_memzone *
 191 qat_comp_setup_inter_buffers(struct qat_comp_dev_private *comp_dev,
 192                               uint32_t buff_size)
 193 {
 194         char inter_buff_mz_name[RTE_MEMZONE_NAMESIZE];
 195         const struct rte_memzone *memzone;
 196         uint8_t *mz_start = NULL;
 197         rte_iova_t mz_start_phys = 0;
 198         struct array_of_ptrs *array_of_pointers;
 199         int size_of_ptr_array;
 200         uint32_t full_size;
 201         uint32_t offset_of_sgls, offset_of_flat_buffs = 0;
 202         int i;
 203         int num_im_sgls = qat_gen_config[
 204                 comp_dev->qat_dev->qat_dev_gen].comp_num_im_bufs_required;
 205
 206         QAT_LOG(DEBUG, "QAT COMP device %s needs %d sgls",
 207                                 comp_dev->qat_dev->name, num_im_sgls);
 208         snprintf(inter_buff_mz_name, RTE_MEMZONE_NAMESIZE,
 209                                 "%s_inter_buff", comp_dev->qat_dev->name);
 210         memzone = rte_memzone_lookup(inter_buff_mz_name);
 211         if (memzone != NULL) {
 212                 QAT_LOG(DEBUG, "QAT COMP im buffer memzone created already");
 213                 return memzone;
 214         }
 215
 216         /* Create a memzone to hold intermediate buffers and associated
 217          * meta-data needed by the firmware. The memzone contains 3 parts:
 218          *  - a list of num_im_sgls physical pointers to sgls
 219          *  - the num_im_sgl sgl structures, each pointing to
 220          *    QAT_NUM_BUFS_IN_IM_SGL flat buffers
 221          *  - the flat buffers: num_im_sgl * QAT_NUM_BUFS_IN_IM_SGL
 222          *    buffers, each of buff_size
 223          * num_im_sgls depends on the hardware generation of the device
 224          * buff_size comes from the user via the config file
 225          */
 226
 227         size_of_ptr_array = num_im_sgls * sizeof(phys_addr_t);
 228         offset_of_sgls = (size_of_ptr_array + (~QAT_64_BYTE_ALIGN_MASK))
 229                         & QAT_64_BYTE_ALIGN_MASK;
 230         offset_of_flat_buffs =
 231             offset_of_sgls + num_im_sgls * sizeof(struct qat_inter_sgl);
 232         full_size = offset_of_flat_buffs +
 233                         num_im_sgls * buff_size * QAT_NUM_BUFS_IN_IM_SGL;
 234
 235         memzone = rte_memzone_reserve_aligned(inter_buff_mz_name, full_size,
 236                         comp_dev->compressdev->data->socket_id,
 237                         RTE_MEMZONE_IOVA_CONTIG, QAT_64_BYTE_ALIGN);
 238         if (memzone == NULL) {
 239                 QAT_LOG(ERR, "Can't allocate intermediate buffers"
 240                                 " for device %s", comp_dev->qat_dev->name);
 241                 return NULL;
 242         }
 243
 244         mz_start = (uint8_t *)memzone->addr;
 245         mz_start_phys = memzone->phys_addr;
 246         QAT_LOG(DEBUG, "Memzone %s: addr = %p, phys = 0x%"PRIx64
 247                         ", size required %d, size created %zu",
 248                         inter_buff_mz_name, mz_start, mz_start_phys,
 249                         full_size, memzone->len);
 250
 251         array_of_pointers = (struct array_of_ptrs *)mz_start;
 252         for (i = 0; i < num_im_sgls; i++) {
 253                 uint32_t curr_sgl_offset =
 254                     offset_of_sgls + i * sizeof(struct qat_inter_sgl);
 255                 struct qat_inter_sgl *sgl =
 256                     (struct qat_inter_sgl *)(mz_start + curr_sgl_offset);
 257                 int lb;
 258                 array_of_pointers->pointer[i] = mz_start_phys + curr_sgl_offset;
 259
 260                 sgl->num_bufs = QAT_NUM_BUFS_IN_IM_SGL;
 261                 sgl->num_mapped_bufs = 0;
 262                 sgl->resrvd = 0;
 263
 264 #if QAT_IM_BUFFER_DEBUG
 265                 QAT_LOG(DEBUG, "  : phys addr of sgl[%i] in array_of_pointers"
 266                         " = 0x%"PRIx64, i, array_of_pointers->pointer[i]);
 267                 QAT_LOG(DEBUG, "  : virt address of sgl[%i] = %p", i, sgl);
 268 #endif
 269                 for (lb = 0; lb < QAT_NUM_BUFS_IN_IM_SGL; lb++) {
 270                         sgl->buffers[lb].addr =
 271                           mz_start_phys + offset_of_flat_buffs +
 272                           (((i * QAT_NUM_BUFS_IN_IM_SGL) + lb) * buff_size);
 273                         sgl->buffers[lb].len = buff_size;
 274                         sgl->buffers[lb].resrvd = 0;
 275 #if QAT_IM_BUFFER_DEBUG
 276                         QAT_LOG(DEBUG,
 277                           "  : sgl->buffers[%d].addr = 0x%"PRIx64", len=%d",
 278                           lb, sgl->buffers[lb].addr, sgl->buffers[lb].len);
 279 #endif
 280                 }
 281         }
 282 #if QAT_IM_BUFFER_DEBUG
 283         QAT_DP_HEXDUMP_LOG(DEBUG,  "IM buffer memzone start:",
 284                         mz_start, offset_of_flat_buffs + 32);
 285 #endif
 286         return memzone;
 287 }
 288
 289 static struct rte_mempool *
 290 qat_comp_create_xform_pool(struct qat_comp_dev_private *comp_dev,
 291                            struct rte_compressdev_config *config,
 292                            uint32_t num_elements)
 293 {
 294         char xform_pool_name[RTE_MEMPOOL_NAMESIZE];
 295         struct rte_mempool *mp;
 296
 297         snprintf(xform_pool_name, RTE_MEMPOOL_NAMESIZE,
 298                         "%s_xforms", comp_dev->qat_dev->name);
 299
 300         QAT_LOG(DEBUG, "xformpool: %s", xform_pool_name);
 301         mp = rte_mempool_lookup(xform_pool_name);
 302
 303         if (mp != NULL) {
 304                 QAT_LOG(DEBUG, "xformpool already created");
 305                 if (mp->size != num_elements) {
 306                         QAT_LOG(DEBUG, "xformpool wrong size - delete it");
 307                         rte_mempool_free(mp);
 308                         mp = NULL;
 309                         comp_dev->xformpool = NULL;
 310                 }
 311         }
 312
 313         if (mp == NULL)
 314                 mp = rte_mempool_create(xform_pool_name,
 315                                 num_elements,
 316                                 qat_comp_xform_size(), 0, 0,
 317                                 NULL, NULL, NULL, NULL, config->socket_id,
 318                                 0);
 319         if (mp == NULL) {
 320                 QAT_LOG(ERR, "Err creating mempool %s w %d elements of size %d",
 321                         xform_pool_name, num_elements, qat_comp_xform_size());
 322                 return NULL;
 323         }
 324
 325         return mp;
 326 }
 327
 328 static void
 329 qat_comp_stream_init(struct rte_mempool *mp __rte_unused, void *opaque,
 330                      void *obj, unsigned int obj_idx)
 331 {
 332         struct stream_create_info *info = opaque;
 333         struct qat_comp_stream *stream = obj;
 334         char mz_name[RTE_MEMZONE_NAMESIZE];
 335         const struct rte_memzone *memzone;
 336         struct qat_inter_sgl *ram_banks_desc;
 337
 338         /* find a memzone for RAM banks */
 339         snprintf(mz_name, RTE_MEMZONE_NAMESIZE, "%s_%u_rambanks",
 340                  info->comp_dev->qat_dev->name, obj_idx);
 341         memzone = rte_memzone_lookup(mz_name);
 342         if (memzone == NULL) {
 343                 /* allocate a memzone for compression state and RAM banks */
 344                 memzone = rte_memzone_reserve_aligned(mz_name,
 345                         QAT_STATE_REGISTERS_MAX_SIZE
 346                                 + sizeof(struct qat_inter_sgl)
 347                                 + QAT_INFLATE_CONTEXT_SIZE,
 348                         info->socket_id,
 349                         RTE_MEMZONE_IOVA_CONTIG, QAT_64_BYTE_ALIGN);
 350                 if (memzone == NULL) {
 351                         QAT_LOG(ERR,
 352                             "Can't allocate RAM banks for device %s, object %u",
 353                                 info->comp_dev->qat_dev->name, obj_idx);
 354                         info->error = -ENOMEM;
 355                         return;
 356                 }
 357         }
 358
 359         /* prepare the buffer list descriptor for RAM banks */
 360         ram_banks_desc = (struct qat_inter_sgl *)
 361                 (((uint8_t *) memzone->addr) + QAT_STATE_REGISTERS_MAX_SIZE);
 362         ram_banks_desc->num_bufs = 1;
 363         ram_banks_desc->buffers[0].len = QAT_INFLATE_CONTEXT_SIZE;
 364         ram_banks_desc->buffers[0].addr = memzone->iova
 365                         + QAT_STATE_REGISTERS_MAX_SIZE
 366                         + sizeof(struct qat_inter_sgl);
 367
 368         memset(stream, 0, qat_comp_stream_size());
 369         stream->memzone = memzone;
 370         stream->state_registers_decomp = memzone->addr;
 371         stream->state_registers_decomp_phys = memzone->iova;
 372         stream->inflate_context = ((uint8_t *) memzone->addr)
 373                         + QAT_STATE_REGISTERS_MAX_SIZE;
 374         stream->inflate_context_phys = memzone->iova
 375                         + QAT_STATE_REGISTERS_MAX_SIZE;
 376 }
 377
 378 static void
 379 qat_comp_stream_destroy(struct rte_mempool *mp __rte_unused,
 380                         void *opaque __rte_unused, void *obj,
 381                         unsigned obj_idx __rte_unused)
 382 {
 383         struct qat_comp_stream *stream = obj;
 384
 385         rte_memzone_free(stream->memzone);
 386 }
 387
 388 static struct rte_mempool *
 389 qat_comp_create_stream_pool(struct qat_comp_dev_private *comp_dev,
 390                             int socket_id,
 391                             uint32_t num_elements)
 392 {
 393         char stream_pool_name[RTE_MEMPOOL_NAMESIZE];
 394         struct rte_mempool *mp;
 395
 396         snprintf(stream_pool_name, RTE_MEMPOOL_NAMESIZE,
 397                  "%s_streams", comp_dev->qat_dev->name);
 398
 399         QAT_LOG(DEBUG, "streampool: %s", stream_pool_name);
 400         mp = rte_mempool_lookup(stream_pool_name);
 401
 402         if (mp != NULL) {
 403                 QAT_LOG(DEBUG, "streampool already created");
 404                 if (mp->size != num_elements) {
 405                         QAT_LOG(DEBUG, "streampool wrong size - delete it");
 406                         rte_mempool_obj_iter(mp, qat_comp_stream_destroy, NULL);
 407                         rte_mempool_free(mp);
 408                         mp = NULL;
 409                         comp_dev->streampool = NULL;
 410                 }
 411         }
 412
 413         if (mp == NULL) {
 414                 struct stream_create_info info = {
 415                         .comp_dev = comp_dev,
 416                         .socket_id = socket_id,
 417                         .error = 0
 418                 };
 419                 mp = rte_mempool_create(stream_pool_name,
 420                                 num_elements,
 421                                 qat_comp_stream_size(), 0, 0,
 422                                 NULL, NULL, qat_comp_stream_init, &info,
 423                                 socket_id, 0);
 424                 if (mp == NULL) {
 425                         QAT_LOG(ERR,
 426                              "Err creating mempool %s w %d elements of size %d",
 427                              stream_pool_name, num_elements,
 428                              qat_comp_stream_size());
 429                 } else if (info.error) {
 430                         rte_mempool_obj_iter(mp, qat_comp_stream_destroy, NULL);
 431                         QAT_LOG(ERR,
 432                              "Destoying mempool %s as at least one element failed initialisation",
 433                              stream_pool_name);
 434                         rte_mempool_free(mp);
 435                         mp = NULL;
 436                 }
 437         }
 438
 439         return mp;
 440 }
 441
 442 static void
 443 _qat_comp_dev_config_clear(struct qat_comp_dev_private *comp_dev)
 444 {
 445         /* Free intermediate buffers */
 446         if (comp_dev->interm_buff_mz) {
 447                 rte_memzone_free(comp_dev->interm_buff_mz);
 448                 comp_dev->interm_buff_mz = NULL;
 449         }
 450
 451         /* Free private_xform pool */
 452         if (comp_dev->xformpool) {
 453                 /* Free internal mempool for private xforms */
 454                 rte_mempool_free(comp_dev->xformpool);
 455                 comp_dev->xformpool = NULL;
 456         }
 457
 458         /* Free stream pool */
 459         if (comp_dev->streampool) {
 460                 rte_mempool_obj_iter(comp_dev->streampool,
 461                                      qat_comp_stream_destroy, NULL);
 462                 rte_mempool_free(comp_dev->streampool);
 463                 comp_dev->streampool = NULL;
 464         }
 465 }
 466
 467 static int
 468 qat_comp_dev_config(struct rte_compressdev *dev,
 469                 struct rte_compressdev_config *config)
 470 {
 471         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 472         int ret = 0;
 473
 474         if (RTE_PMD_QAT_COMP_IM_BUFFER_SIZE == 0) {
 475                 QAT_LOG(WARNING,
 476                         "RTE_PMD_QAT_COMP_IM_BUFFER_SIZE = 0 in config file, so"
 477                         " QAT device can't be used for Dynamic Deflate. "
 478                         "Did you really intend to do this?");
 479         } else {
 480                 comp_dev->interm_buff_mz =
 481                                 qat_comp_setup_inter_buffers(comp_dev,
 482                                         RTE_PMD_QAT_COMP_IM_BUFFER_SIZE);
 483                 if (comp_dev->interm_buff_mz == NULL) {
 484                         ret = -ENOMEM;
 485                         goto error_out;
 486                 }
 487         }
 488
 489         if (config->max_nb_priv_xforms) {
 490                 comp_dev->xformpool = qat_comp_create_xform_pool(comp_dev,
 491                                             config, config->max_nb_priv_xforms);
 492                 if (comp_dev->xformpool == NULL) {
 493                         ret = -ENOMEM;
 494                         goto error_out;
 495                 }
 496         } else
 497                 comp_dev->xformpool = NULL;
 498
 499         if (config->max_nb_streams) {
 500                 comp_dev->streampool = qat_comp_create_stream_pool(comp_dev,
 501                                      config->socket_id, config->max_nb_streams);
 502                 if (comp_dev->streampool == NULL) {
 503                         ret = -ENOMEM;
 504                         goto error_out;
 505                 }
 506         } else
 507                 comp_dev->streampool = NULL;
 508
 509         return 0;
 510
 511 error_out:
 512         _qat_comp_dev_config_clear(comp_dev);
 513         return ret;
 514 }
 515
 516 static int
 517 qat_comp_dev_start(struct rte_compressdev *dev __rte_unused)
 518 {
 519         return 0;
 520 }
 521
 522 static void
 523 qat_comp_dev_stop(struct rte_compressdev *dev __rte_unused)
 524 {
 525
 526 }
 527
 528 static int
 529 qat_comp_dev_close(struct rte_compressdev *dev)
 530 {
 531         int i;
 532         int ret = 0;
 533         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 534
 535         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
 536                 ret = qat_comp_qp_release(dev, i);
 537                 if (ret < 0)
 538                         return ret;
 539         }
 540
 541         _qat_comp_dev_config_clear(comp_dev);
 542
 543         return ret;
 544 }
 545
 546
 547 static void
 548 qat_comp_dev_info_get(struct rte_compressdev *dev,
 549                         struct rte_compressdev_info *info)
 550 {
 551         struct qat_comp_dev_private *comp_dev = dev->data->dev_private;
 552         const struct qat_qp_hw_data *comp_hw_qps =
 553                 qat_gen_config[comp_dev->qat_dev->qat_dev_gen]
 554                               .qp_hw_data[QAT_SERVICE_COMPRESSION];
 555
 556         if (info != NULL) {
 557                 info->max_nb_queue_pairs =
 558                         qat_qps_per_service(comp_hw_qps,
 559                                             QAT_SERVICE_COMPRESSION);
 560                 info->feature_flags = dev->feature_flags;
 561                 info->capabilities = comp_dev->qat_dev_capabilities;
 562         }
 563 }
 564
 565 static uint16_t
 566 qat_comp_pmd_enq_deq_dummy_op_burst(void *qp __rte_unused,
 567                                     struct rte_comp_op **ops __rte_unused,
 568                                     uint16_t nb_ops __rte_unused)
 569 {
 570         QAT_DP_LOG(ERR, "QAT PMD detected wrong FW version !");
 571         return 0;
 572 }
 573
 574 static struct rte_compressdev_ops compress_qat_dummy_ops = {
 575
 576         /* Device related operations */
 577         .dev_configure          = NULL,
 578         .dev_start              = NULL,
 579         .dev_stop               = qat_comp_dev_stop,
 580         .dev_close              = qat_comp_dev_close,
 581         .dev_infos_get          = NULL,
 582
 583         .stats_get              = NULL,
 584         .stats_reset            = qat_comp_stats_reset,
 585         .queue_pair_setup       = NULL,
 586         .queue_pair_release     = qat_comp_qp_release,
 587
 588         /* Compression related operations */
 589         .private_xform_create   = NULL,
 590         .private_xform_free     = qat_comp_private_xform_free
 591 };
 592
 593 static uint16_t
 594 qat_comp_pmd_dequeue_first_op_burst(void *qp, struct rte_comp_op **ops,
 595                                    uint16_t nb_ops)
 596 {
 597         uint16_t ret = qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 598         struct qat_qp *tmp_qp = (struct qat_qp *)qp;
 599
 600         if (ret) {
 601                 if ((*ops)->debug_status ==
 602                                 (uint64_t)ERR_CODE_QAT_COMP_WRONG_FW) {
 603                         tmp_qp->qat_dev->comp_dev->compressdev->enqueue_burst =
 604                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 605                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 606                                         qat_comp_pmd_enq_deq_dummy_op_burst;
 607
 608                         tmp_qp->qat_dev->comp_dev->compressdev->dev_ops =
 609                                         &compress_qat_dummy_ops;
 610                         QAT_LOG(ERR, "QAT PMD detected wrong FW version !");
 611
 612                 } else {
 613                         tmp_qp->qat_dev->comp_dev->compressdev->dequeue_burst =
 614                                         (compressdev_dequeue_pkt_burst_t)
 615                                         qat_dequeue_op_burst;
 616                 }
 617         }
 618         return ret;
 619 }
 620
 621 static struct rte_compressdev_ops compress_qat_ops = {
 622
 623         /* Device related operations */
 624         .dev_configure          = qat_comp_dev_config,
 625         .dev_start              = qat_comp_dev_start,
 626         .dev_stop               = qat_comp_dev_stop,
 627         .dev_close              = qat_comp_dev_close,
 628         .dev_infos_get          = qat_comp_dev_info_get,
 629
 630         .stats_get              = qat_comp_stats_get,
 631         .stats_reset            = qat_comp_stats_reset,
 632         .queue_pair_setup       = qat_comp_qp_setup,
 633         .queue_pair_release     = qat_comp_qp_release,
 634
 635         /* Compression related operations */
 636         .private_xform_create   = qat_comp_private_xform_create,
 637         .private_xform_free     = qat_comp_private_xform_free,
 638         .stream_create          = qat_comp_stream_create,
 639         .stream_free            = qat_comp_stream_free
 640 };
 641
 642 /* An rte_driver is needed in the registration of the device with compressdev.
 643  * The actual qat pci's rte_driver can't be used as its name represents
 644  * the whole pci device with all services. Think of this as a holder for a name
 645  * for the compression part of the pci device.
 646  */
 647 static const char qat_comp_drv_name[] = RTE_STR(COMPRESSDEV_NAME_QAT_PMD);
 648 static const struct rte_driver compdev_qat_driver = {
 649         .name = qat_comp_drv_name,
 650         .alias = qat_comp_drv_name
 651 };
 652 int
 653 qat_comp_dev_create(struct qat_pci_device *qat_pci_dev,
 654                 struct qat_dev_cmd_param *qat_dev_cmd_param)
 655 {
 656         int i = 0;
 657         struct qat_device_info *qat_dev_instance =
 658                         &qat_pci_devs[qat_pci_dev->qat_dev_id];
 659         if (qat_pci_dev->qat_dev_gen == QAT_GEN3) {
 660                 QAT_LOG(ERR, "Compression PMD not supported on QAT c4xxx");
 661                 return 0;
 662         }
 663
 664         struct rte_compressdev_pmd_init_params init_params = {
 665                 .name = "",
 666                 .socket_id = qat_dev_instance->pci_dev->device.numa_node,
 667         };
 668         char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
 669         char capa_memz_name[RTE_COMPRESSDEV_NAME_MAX_LEN];
 670         struct rte_compressdev *compressdev;
 671         struct qat_comp_dev_private *comp_dev;
 672         const struct rte_compressdev_capabilities *capabilities;
 673         uint64_t capa_size;
 674
 675         snprintf(name, RTE_COMPRESSDEV_NAME_MAX_LEN, "%s_%s",
 676                         qat_pci_dev->name, "comp");
 677         QAT_LOG(DEBUG, "Creating QAT COMP device %s", name);
 678
 679         /* Populate subset device to use in compressdev device creation */
 680         qat_dev_instance->comp_rte_dev.driver = &compdev_qat_driver;
 681         qat_dev_instance->comp_rte_dev.numa_node =
 682                         qat_dev_instance->pci_dev->device.numa_node;
 683         qat_dev_instance->comp_rte_dev.devargs = NULL;
 684
 685         compressdev = rte_compressdev_pmd_create(name,
 686                         &(qat_dev_instance->comp_rte_dev),
 687                         sizeof(struct qat_comp_dev_private),
 688                         &init_params);
 689
 690         if (compressdev == NULL)
 691                 return -ENODEV;
 692
 693         compressdev->dev_ops = &compress_qat_ops;
 694
 695         compressdev->enqueue_burst = (compressdev_enqueue_pkt_burst_t)
 696                         qat_enqueue_comp_op_burst;
 697         compressdev->dequeue_burst = qat_comp_pmd_dequeue_first_op_burst;
 698
 699         compressdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
 700
 701         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 702                 return 0;
 703
 704         snprintf(capa_memz_name, RTE_COMPRESSDEV_NAME_MAX_LEN,
 705                         "QAT_COMP_CAPA_GEN_%d",
 706                         qat_pci_dev->qat_dev_gen);
 707
 708         comp_dev = compressdev->data->dev_private;
 709         comp_dev->qat_dev = qat_pci_dev;
 710         comp_dev->compressdev = compressdev;
 711
 712         switch (qat_pci_dev->qat_dev_gen) {
 713         case QAT_GEN1:
 714         case QAT_GEN2:
 715         case QAT_GEN3:
 716                 capabilities = qat_comp_gen_capabilities;
 717                 capa_size = sizeof(qat_comp_gen_capabilities);
 718                 break;
 719         default:
 720                 capabilities = qat_comp_gen_capabilities;
 721                 capa_size = sizeof(qat_comp_gen_capabilities);
 722                 QAT_LOG(DEBUG,
 723                         "QAT gen %d capabilities unknown, default to GEN1",
 724                                         qat_pci_dev->qat_dev_gen);
 725                 break;
 726         }
 727
 728         comp_dev->capa_mz = rte_memzone_lookup(capa_memz_name);
 729         if (comp_dev->capa_mz == NULL) {
 730                 comp_dev->capa_mz = rte_memzone_reserve(capa_memz_name,
 731                         capa_size,
 732                         rte_socket_id(), 0);
 733         }
 734         if (comp_dev->capa_mz == NULL) {
 735                 QAT_LOG(DEBUG,
 736                         "Error allocating memzone for capabilities, destroying PMD for %s",
 737                         name);
 738                 memset(&qat_dev_instance->comp_rte_dev, 0,
 739                         sizeof(qat_dev_instance->comp_rte_dev));
 740                 rte_compressdev_pmd_destroy(compressdev);
 741                 return -EFAULT;
 742         }
 743
 744         memcpy(comp_dev->capa_mz->addr, capabilities, capa_size);
 745         comp_dev->qat_dev_capabilities = comp_dev->capa_mz->addr;
 746
 747         while (1) {
 748                 if (qat_dev_cmd_param[i].name == NULL)
 749                         break;
 750                 if (!strcmp(qat_dev_cmd_param[i].name, COMP_ENQ_THRESHOLD_NAME))
 751                         comp_dev->min_enq_burst_threshold =
 752                                         qat_dev_cmd_param[i].val;
 753                 i++;
 754         }
 755         qat_pci_dev->comp_dev = comp_dev;
 756
 757         QAT_LOG(DEBUG,
 758                     "Created QAT COMP device %s as compressdev instance %d",
 759                         name, compressdev->data->dev_id);
 760         return 0;
 761 }
 762
 763 int
 764 qat_comp_dev_destroy(struct qat_pci_device *qat_pci_dev)
 765 {
 766         struct qat_comp_dev_private *comp_dev;
 767
 768         if (qat_pci_dev == NULL)
 769                 return -ENODEV;
 770
 771         comp_dev = qat_pci_dev->comp_dev;
 772         if (comp_dev == NULL)
 773                 return 0;
 774
 775         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 776                 rte_memzone_free(qat_pci_dev->comp_dev->capa_mz);
 777
 778         /* clean up any resources used by the device */
 779         qat_comp_dev_close(comp_dev->compressdev);
 780
 781         rte_compressdev_pmd_destroy(comp_dev->compressdev);
 782         qat_pci_dev->comp_dev = NULL;
 783
 784         return 0;
 785 }