drivers/compress/qat/qat_comp.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2019 Intel Corporation
   3  */
   4
   5 #include <rte_mempool.h>
   6 #include <rte_mbuf.h>
   7 #include <rte_hexdump.h>
   8 #include <rte_comp.h>
   9 #include <rte_bus_pci.h>
  10 #include <rte_byteorder.h>
  11 #include <rte_memcpy.h>
  12 #include <rte_common.h>
  13 #include <rte_spinlock.h>
  14 #include <rte_log.h>
  15 #include <rte_malloc.h>
  16
  17 #include "qat_logs.h"
  18 #include "qat_comp.h"
  19 #include "qat_comp_pmd.h"
  20
  21
  22 int
  23 qat_comp_build_request(void *in_op, uint8_t *out_msg,
  24                        void *op_cookie,
  25                        enum qat_device_gen qat_dev_gen __rte_unused)
  26 {
  27         struct rte_comp_op *op = in_op;
  28         struct qat_comp_op_cookie *cookie =
  29                         (struct qat_comp_op_cookie *)op_cookie;
  30         struct qat_comp_xform *qat_xform = op->private_xform;
  31         const uint8_t *tmpl = (uint8_t *)&qat_xform->qat_comp_req_tmpl;
  32         struct icp_qat_fw_comp_req *comp_req =
  33             (struct icp_qat_fw_comp_req *)out_msg;
  34
  35         if (unlikely(op->op_type != RTE_COMP_OP_STATELESS)) {
  36                 QAT_DP_LOG(ERR, "QAT PMD only supports stateless compression "
  37                                 "operation requests, op (%p) is not a "
  38                                 "stateless operation.", op);
  39                 op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
  40                 return -EINVAL;
  41         }
  42
  43         rte_mov128(out_msg, tmpl);
  44         comp_req->comn_mid.opaque_data = (uint64_t)(uintptr_t)op;
  45
  46         if (likely(qat_xform->qat_comp_request_type ==
  47                     QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)) {
  48                 if (unlikely(op->src.length > QAT_FALLBACK_THLD)) {
  49
  50                         /* fallback to fixed compression */
  51                         comp_req->comn_hdr.service_cmd_id =
  52                                         ICP_QAT_FW_COMP_CMD_STATIC;
  53
  54                         ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
  55                                         ICP_QAT_FW_SLICE_DRAM_WR);
  56
  57                         ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->u2.xlt_cd_ctrl,
  58                                         ICP_QAT_FW_SLICE_NULL);
  59                         ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->u2.xlt_cd_ctrl,
  60                                         ICP_QAT_FW_SLICE_NULL);
  61
  62                         QAT_DP_LOG(DEBUG, "QAT PMD: fallback to fixed "
  63                                    "compression! IM buffer size can be too low "
  64                                    "for produced data.\n Please use input "
  65                                    "buffer length lower than %d bytes",
  66                                    QAT_FALLBACK_THLD);
  67                 }
  68         }
  69
  70         /* common for sgl and flat buffers */
  71         comp_req->comp_pars.comp_len = op->src.length;
  72         comp_req->comp_pars.out_buffer_sz = rte_pktmbuf_pkt_len(op->m_dst) -
  73                         op->dst.offset;
  74
  75         if (op->m_src->next != NULL || op->m_dst->next != NULL) {
  76                 /* sgl */
  77                 int ret = 0;
  78
  79                 ICP_QAT_FW_COMN_PTR_TYPE_SET(comp_req->comn_hdr.comn_req_flags,
  80                                 QAT_COMN_PTR_TYPE_SGL);
  81
  82                 if (unlikely(op->m_src->nb_segs > cookie->src_nb_elems)) {
  83                         /* we need to allocate more elements in SGL*/
  84                         void *tmp;
  85
  86                         tmp = rte_realloc_socket(cookie->qat_sgl_src_d,
  87                                           sizeof(struct qat_sgl) +
  88                                           sizeof(struct qat_flat_buf) *
  89                                           op->m_src->nb_segs, 64,
  90                                           cookie->socket_id);
  91
  92                         if (unlikely(tmp == NULL)) {
  93                                 QAT_DP_LOG(ERR, "QAT PMD can't allocate memory"
  94                                            " for %d elements of SGL",
  95                                            op->m_src->nb_segs);
  96                                 op->status = RTE_COMP_OP_STATUS_ERROR;
  97                                 return -ENOMEM;
  98                         }
  99                         /* new SGL is valid now */
 100                         cookie->qat_sgl_src_d = (struct qat_sgl *)tmp;
 101                         cookie->src_nb_elems = op->m_src->nb_segs;
 102                         cookie->qat_sgl_src_phys_addr =
 103                                 rte_malloc_virt2iova(cookie->qat_sgl_src_d);
 104                 }
 105
 106                 ret = qat_sgl_fill_array(op->m_src,
 107                                 op->src.offset,
 108                                 cookie->qat_sgl_src_d,
 109                                 op->src.length,
 110                                 cookie->src_nb_elems);
 111                 if (ret) {
 112                         QAT_DP_LOG(ERR, "QAT PMD Cannot fill source sgl array");
 113                         op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 114                         return ret;
 115                 }
 116
 117                 if (unlikely(op->m_dst->nb_segs > cookie->dst_nb_elems)) {
 118                         /* we need to allocate more elements in SGL*/
 119                         struct qat_sgl *tmp;
 120
 121                         tmp = rte_realloc_socket(cookie->qat_sgl_dst_d,
 122                                           sizeof(struct qat_sgl) +
 123                                           sizeof(struct qat_flat_buf) *
 124                                           op->m_dst->nb_segs, 64,
 125                                           cookie->socket_id);
 126
 127                         if (unlikely(tmp == NULL)) {
 128                                 QAT_DP_LOG(ERR, "QAT PMD can't allocate memory"
 129                                            " for %d elements of SGL",
 130                                            op->m_dst->nb_segs);
 131                                 op->status = RTE_COMP_OP_STATUS_ERROR;
 132                                 return -ENOMEM;
 133                         }
 134                         /* new SGL is valid now */
 135                         cookie->qat_sgl_dst_d = (struct qat_sgl *)tmp;
 136                         cookie->dst_nb_elems = op->m_dst->nb_segs;
 137                         cookie->qat_sgl_dst_phys_addr =
 138                                 rte_malloc_virt2iova(cookie->qat_sgl_dst_d);
 139                 }
 140
 141                 ret = qat_sgl_fill_array(op->m_dst,
 142                                 op->dst.offset,
 143                                 cookie->qat_sgl_dst_d,
 144                                 comp_req->comp_pars.out_buffer_sz,
 145                                 cookie->dst_nb_elems);
 146                 if (ret) {
 147                         QAT_DP_LOG(ERR, "QAT PMD Cannot fill dest. sgl array");
 148                         op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 149                         return ret;
 150                 }
 151
 152                 comp_req->comn_mid.src_data_addr =
 153                                 cookie->qat_sgl_src_phys_addr;
 154                 comp_req->comn_mid.dest_data_addr =
 155                                 cookie->qat_sgl_dst_phys_addr;
 156                 comp_req->comn_mid.src_length = 0;
 157                 comp_req->comn_mid.dst_length = 0;
 158
 159         } else {
 160                 /* flat aka linear buffer */
 161                 ICP_QAT_FW_COMN_PTR_TYPE_SET(comp_req->comn_hdr.comn_req_flags,
 162                                 QAT_COMN_PTR_TYPE_FLAT);
 163                 comp_req->comn_mid.src_length = op->src.length;
 164                 comp_req->comn_mid.dst_length =
 165                                 comp_req->comp_pars.out_buffer_sz;
 166
 167                 comp_req->comn_mid.src_data_addr =
 168                     rte_pktmbuf_mtophys_offset(op->m_src, op->src.offset);
 169                 comp_req->comn_mid.dest_data_addr =
 170                     rte_pktmbuf_mtophys_offset(op->m_dst, op->dst.offset);
 171         }
 172
 173         if (unlikely(rte_pktmbuf_pkt_len(op->m_dst) < QAT_MIN_OUT_BUF_SIZE)) {
 174                 /* QAT doesn't support dest. buffer lower
 175                  * than QAT_MIN_OUT_BUF_SIZE. Propagate error mark
 176                  * by converting this request to the null one
 177                  * and check the status in the response.
 178                  */
 179                 QAT_DP_LOG(WARNING, "QAT destination buffer too small - resend with larger buffer");
 180                 comp_req->comn_hdr.service_type = ICP_QAT_FW_COMN_REQ_NULL;
 181                 comp_req->comn_hdr.service_cmd_id = ICP_QAT_FW_NULL_REQ_SERV_ID;
 182                 cookie->error = RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 183         }
 184
 185 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 186         QAT_DP_LOG(DEBUG, "Direction: %s",
 187             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS ?
 188                             "decompression" : "compression");
 189         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message:", comp_req,
 190                     sizeof(struct icp_qat_fw_comp_req));
 191 #endif
 192         return 0;
 193 }
 194
 195 int
 196 qat_comp_process_response(void **op, uint8_t *resp, void *op_cookie,
 197                           uint64_t *dequeue_err_count)
 198 {
 199         struct icp_qat_fw_comp_resp *resp_msg =
 200                         (struct icp_qat_fw_comp_resp *)resp;
 201         struct qat_comp_op_cookie *cookie =
 202                         (struct qat_comp_op_cookie *)op_cookie;
 203         struct rte_comp_op *rx_op = (struct rte_comp_op *)(uintptr_t)
 204                         (resp_msg->opaque_data);
 205         struct qat_comp_xform *qat_xform = (struct qat_comp_xform *)
 206                                 (rx_op->private_xform);
 207         int err = resp_msg->comn_resp.comn_status &
 208                         ((1 << QAT_COMN_RESP_CMP_STATUS_BITPOS) |
 209                          (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS));
 210
 211 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 212         QAT_DP_LOG(DEBUG, "Direction: %s",
 213             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS ?
 214             "decompression" : "compression");
 215         QAT_DP_HEXDUMP_LOG(DEBUG,  "qat_response:", (uint8_t *)resp_msg,
 216                         sizeof(struct icp_qat_fw_comp_resp));
 217 #endif
 218
 219         if (unlikely(cookie->error)) {
 220                 rx_op->status = cookie->error;
 221                 cookie->error = 0;
 222                 ++(*dequeue_err_count);
 223                 rx_op->debug_status = 0;
 224                 rx_op->consumed = 0;
 225                 rx_op->produced = 0;
 226                 *op = (void *)rx_op;
 227                 return 0;
 228         }
 229
 230         if (likely(qat_xform->qat_comp_request_type
 231                         != QAT_COMP_REQUEST_DECOMPRESS)) {
 232                 if (unlikely(ICP_QAT_FW_COMN_HDR_CNV_FLAG_GET(
 233                                 resp_msg->comn_resp.hdr_flags)
 234                                         == ICP_QAT_FW_COMP_NO_CNV)) {
 235                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 236                         rx_op->debug_status = ERR_CODE_QAT_COMP_WRONG_FW;
 237                         *op = (void *)rx_op;
 238                         QAT_DP_LOG(ERR, "QAT has wrong firmware");
 239                         ++(*dequeue_err_count);
 240                         return 0;
 241                 }
 242         }
 243
 244         if (err) {
 245                 if (unlikely((err & (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS))
 246                              && (qat_xform->qat_comp_request_type
 247                                  == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS))) {
 248                         QAT_DP_LOG(ERR, "QAT intermediate buffer may be too "
 249                             "small for output, try configuring a larger size");
 250                 }
 251
 252                 int8_t cmp_err_code =
 253                         (int8_t)resp_msg->comn_resp.comn_error.cmp_err_code;
 254                 int8_t xlat_err_code =
 255                         (int8_t)resp_msg->comn_resp.comn_error.xlat_err_code;
 256
 257                 if ((cmp_err_code == ERR_CODE_OVERFLOW_ERROR && !xlat_err_code)
 258                                 ||
 259                     (!cmp_err_code && xlat_err_code == ERR_CODE_OVERFLOW_ERROR)
 260                                 ||
 261                     (cmp_err_code == ERR_CODE_OVERFLOW_ERROR &&
 262                      xlat_err_code == ERR_CODE_OVERFLOW_ERROR))
 263                         rx_op->status =
 264                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 265                 else
 266                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 267
 268                 ++(*dequeue_err_count);
 269                 rx_op->debug_status =
 270                         *((uint16_t *)(&resp_msg->comn_resp.comn_error));
 271         } else {
 272                 struct icp_qat_fw_resp_comp_pars *comp_resp =
 273                   (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
 274
 275                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 276                 rx_op->consumed = comp_resp->input_byte_counter;
 277                 rx_op->produced = comp_resp->output_byte_counter;
 278
 279                 if (qat_xform->checksum_type != RTE_COMP_CHECKSUM_NONE) {
 280                         if (qat_xform->checksum_type == RTE_COMP_CHECKSUM_CRC32)
 281                                 rx_op->output_chksum = comp_resp->curr_crc32;
 282                         else if (qat_xform->checksum_type ==
 283                                         RTE_COMP_CHECKSUM_ADLER32)
 284                                 rx_op->output_chksum = comp_resp->curr_adler_32;
 285                         else
 286                                 rx_op->output_chksum = comp_resp->curr_chksum;
 287                 }
 288         }
 289         *op = (void *)rx_op;
 290
 291         return 0;
 292 }
 293
 294 unsigned int
 295 qat_comp_xform_size(void)
 296 {
 297         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_xform), 8);
 298 }
 299
 300 static void qat_comp_create_req_hdr(struct icp_qat_fw_comn_req_hdr *header,
 301                                     enum qat_comp_request_type request)
 302 {
 303         if (request == QAT_COMP_REQUEST_FIXED_COMP_STATELESS)
 304                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_STATIC;
 305         else if (request == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)
 306                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DYNAMIC;
 307         else if (request == QAT_COMP_REQUEST_DECOMPRESS)
 308                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DECOMPRESS;
 309
 310         header->service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_COMP;
 311         header->hdr_flags =
 312             ICP_QAT_FW_COMN_HDR_FLAGS_BUILD(ICP_QAT_FW_COMN_REQ_FLAG_SET);
 313
 314         header->comn_req_flags = ICP_QAT_FW_COMN_FLAGS_BUILD(
 315             QAT_COMN_CD_FLD_TYPE_16BYTE_DATA, QAT_COMN_PTR_TYPE_FLAT);
 316 }
 317
 318 static int qat_comp_create_templates(struct qat_comp_xform *qat_xform,
 319                         const struct rte_memzone *interm_buff_mz,
 320                         const struct rte_comp_xform *xform)
 321 {
 322         struct icp_qat_fw_comp_req *comp_req;
 323         int comp_level, algo;
 324         uint32_t req_par_flags;
 325         int direction = ICP_QAT_HW_COMPRESSION_DIR_COMPRESS;
 326
 327         if (unlikely(qat_xform == NULL)) {
 328                 QAT_LOG(ERR, "Session was not created for this device");
 329                 return -EINVAL;
 330         }
 331
 332         if (qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
 333                 direction = ICP_QAT_HW_COMPRESSION_DIR_DECOMPRESS;
 334                 comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
 335                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 336                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 337                                 ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_NO_CNV,
 338                                 ICP_QAT_FW_COMP_NO_CNV_RECOVERY);
 339
 340         } else {
 341                 if (xform->compress.level == RTE_COMP_LEVEL_PMD_DEFAULT)
 342                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
 343                 else if (xform->compress.level == 1)
 344                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
 345                 else if (xform->compress.level == 2)
 346                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_4;
 347                 else if (xform->compress.level == 3)
 348                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
 349                 else if (xform->compress.level >= 4 &&
 350                          xform->compress.level <= 9)
 351                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_16;
 352                 else {
 353                         QAT_LOG(ERR, "compression level not supported");
 354                         return -EINVAL;
 355                 }
 356                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 357                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 358                                 ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_CNV,
 359                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 360         }
 361
 362         switch (xform->compress.algo) {
 363         case RTE_COMP_ALGO_DEFLATE:
 364                 algo = ICP_QAT_HW_COMPRESSION_ALGO_DEFLATE;
 365                 break;
 366         case RTE_COMP_ALGO_LZS:
 367         default:
 368                 /* RTE_COMP_NULL */
 369                 QAT_LOG(ERR, "compression algorithm not supported");
 370                 return -EINVAL;
 371         }
 372
 373         comp_req = &qat_xform->qat_comp_req_tmpl;
 374
 375         /* Initialize header */
 376         qat_comp_create_req_hdr(&comp_req->comn_hdr,
 377                                         qat_xform->qat_comp_request_type);
 378
 379         comp_req->comn_hdr.serv_specif_flags = ICP_QAT_FW_COMP_FLAGS_BUILD(
 380             ICP_QAT_FW_COMP_STATELESS_SESSION,
 381             ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
 382             ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
 383             ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
 384             ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
 385
 386         comp_req->cd_pars.sl.comp_slice_cfg_word[0] =
 387             ICP_QAT_HW_COMPRESSION_CONFIG_BUILD(
 388                 direction,
 389                 /* In CPM 1.6 only valid mode ! */
 390                 ICP_QAT_HW_COMPRESSION_DELAYED_MATCH_ENABLED, algo,
 391                 /* Translate level to depth */
 392                 comp_level, ICP_QAT_HW_COMPRESSION_FILE_TYPE_0);
 393
 394         comp_req->comp_pars.initial_adler = 1;
 395         comp_req->comp_pars.initial_crc32 = 0;
 396         comp_req->comp_pars.req_par_flags = req_par_flags;
 397
 398
 399         if (qat_xform->qat_comp_request_type ==
 400                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS ||
 401             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
 402                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 403                                             ICP_QAT_FW_SLICE_DRAM_WR);
 404                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 405                                             ICP_QAT_FW_SLICE_COMP);
 406         } else if (qat_xform->qat_comp_request_type ==
 407                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS) {
 408
 409                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 410                                 ICP_QAT_FW_SLICE_XLAT);
 411                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 412                                 ICP_QAT_FW_SLICE_COMP);
 413
 414                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 415                                 ICP_QAT_FW_SLICE_DRAM_WR);
 416                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 417                                 ICP_QAT_FW_SLICE_XLAT);
 418
 419                 comp_req->u1.xlt_pars.inter_buff_ptr =
 420                                 interm_buff_mz->phys_addr;
 421         }
 422
 423 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 424         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message template:", comp_req,
 425                     sizeof(struct icp_qat_fw_comp_req));
 426 #endif
 427         return 0;
 428 }
 429
 430 /**
 431  * Create driver private_xform data.
 432  *
 433  * @param dev
 434  *   Compressdev device
 435  * @param xform
 436  *   xform data from application
 437  * @param private_xform
 438  *   ptr where handle of pmd's private_xform data should be stored
 439  * @return
 440  *  - if successful returns 0
 441  *    and valid private_xform handle
 442  *  - <0 in error cases
 443  *  - Returns -EINVAL if input parameters are invalid.
 444  *  - Returns -ENOTSUP if comp device does not support the comp transform.
 445  *  - Returns -ENOMEM if the private_xform could not be allocated.
 446  */
 447 int
 448 qat_comp_private_xform_create(struct rte_compressdev *dev,
 449                               const struct rte_comp_xform *xform,
 450                               void **private_xform)
 451 {
 452         struct qat_comp_dev_private *qat = dev->data->dev_private;
 453
 454         if (unlikely(private_xform == NULL)) {
 455                 QAT_LOG(ERR, "QAT: private_xform parameter is NULL");
 456                 return -EINVAL;
 457         }
 458         if (unlikely(qat->xformpool == NULL)) {
 459                 QAT_LOG(ERR, "QAT device has no private_xform mempool");
 460                 return -ENOMEM;
 461         }
 462         if (rte_mempool_get(qat->xformpool, private_xform)) {
 463                 QAT_LOG(ERR, "Couldn't get object from qat xform mempool");
 464                 return -ENOMEM;
 465         }
 466
 467         struct qat_comp_xform *qat_xform =
 468                         (struct qat_comp_xform *)*private_xform;
 469
 470         if (xform->type == RTE_COMP_COMPRESS) {
 471
 472                 if (xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED ||
 473                   ((xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_DEFAULT)
 474                                    && qat->interm_buff_mz == NULL))
 475                         qat_xform->qat_comp_request_type =
 476                                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS;
 477
 478                 else if ((xform->compress.deflate.huffman ==
 479                                 RTE_COMP_HUFFMAN_DYNAMIC ||
 480                                 xform->compress.deflate.huffman ==
 481                                                 RTE_COMP_HUFFMAN_DEFAULT) &&
 482                                 qat->interm_buff_mz != NULL)
 483
 484                         qat_xform->qat_comp_request_type =
 485                                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS;
 486
 487                 else {
 488                         QAT_LOG(ERR,
 489                                         "IM buffers needed for dynamic deflate. Set size in config file");
 490                         return -EINVAL;
 491                 }
 492
 493                 qat_xform->checksum_type = xform->compress.chksum;
 494
 495         } else {
 496                 qat_xform->qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
 497                 qat_xform->checksum_type = xform->decompress.chksum;
 498         }
 499
 500         if (qat_comp_create_templates(qat_xform, qat->interm_buff_mz, xform)) {
 501                 QAT_LOG(ERR, "QAT: Problem with setting compression");
 502                 return -EINVAL;
 503         }
 504         return 0;
 505 }
 506
 507 /**
 508  * Free driver private_xform data.
 509  *
 510  * @param dev
 511  *   Compressdev device
 512  * @param private_xform
 513  *   handle of pmd's private_xform data
 514  * @return
 515  *  - 0 if successful
 516  *  - <0 in error cases
 517  *  - Returns -EINVAL if input parameters are invalid.
 518  */
 519 int
 520 qat_comp_private_xform_free(struct rte_compressdev *dev __rte_unused,
 521                             void *private_xform)
 522 {
 523         struct qat_comp_xform *qat_xform =
 524                         (struct qat_comp_xform *)private_xform;
 525
 526         if (qat_xform) {
 527                 memset(qat_xform, 0, qat_comp_xform_size());
 528                 struct rte_mempool *mp = rte_mempool_from_obj(qat_xform);
 529
 530                 rte_mempool_put(mp, qat_xform);
 531                 return 0;
 532         }
 533         return -EINVAL;
 534 }