drivers/compress/qat/qat_comp.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2021 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 #include <rte_memzone.h>
  17
  18 #include "qat_logs.h"
  19 #include "qat_comp.h"
  20 #include "qat_comp_pmd.h"
  21
  22 static void
  23 qat_comp_fallback_to_fixed(struct icp_qat_fw_comp_req *comp_req)
  24 {
  25         QAT_DP_LOG(DEBUG, "QAT PMD: fallback to fixed compression!");
  26
  27         comp_req->comn_hdr.service_cmd_id =
  28                         ICP_QAT_FW_COMP_CMD_STATIC;
  29
  30         ICP_QAT_FW_COMN_NEXT_ID_SET(
  31                         &comp_req->comp_cd_ctrl,
  32                         ICP_QAT_FW_SLICE_DRAM_WR);
  33
  34         ICP_QAT_FW_COMN_NEXT_ID_SET(
  35                         &comp_req->u2.xlt_cd_ctrl,
  36                         ICP_QAT_FW_SLICE_NULL);
  37         ICP_QAT_FW_COMN_CURR_ID_SET(
  38                         &comp_req->u2.xlt_cd_ctrl,
  39                         ICP_QAT_FW_SLICE_NULL);
  40 }
  41
  42 void
  43 qat_comp_free_split_op_memzones(struct qat_comp_op_cookie *cookie,
  44                                 unsigned int nb_children)
  45 {
  46         unsigned int i;
  47
  48         /* free all memzones allocated for child descriptors */
  49         for (i = 0; i < nb_children; i++)
  50                 rte_memzone_free(cookie->dst_memzones[i]);
  51
  52         /* and free the pointer table */
  53         rte_free(cookie->dst_memzones);
  54         cookie->dst_memzones = NULL;
  55 }
  56
  57 static int
  58 qat_comp_allocate_split_op_memzones(struct qat_comp_op_cookie *cookie,
  59                                     unsigned int nb_descriptors_needed)
  60 {
  61         struct qat_queue *txq = &(cookie->qp->tx_q);
  62         char dst_memz_name[RTE_MEMZONE_NAMESIZE];
  63         unsigned int i;
  64
  65         /* allocate the array of memzone pointers */
  66         cookie->dst_memzones = rte_zmalloc_socket("qat PMD im buf mz pointers",
  67                         (nb_descriptors_needed - 1) *
  68                                 sizeof(const struct rte_memzone *),
  69                         RTE_CACHE_LINE_SIZE, cookie->socket_id);
  70
  71         if (cookie->dst_memzones == NULL) {
  72                 QAT_DP_LOG(ERR,
  73                         "QAT PMD: failed to allocate im buf mz pointers");
  74                 return -ENOMEM;
  75         }
  76
  77         for (i = 0; i < nb_descriptors_needed - 1; i++) {
  78                 snprintf(dst_memz_name,
  79                                 sizeof(dst_memz_name),
  80                                 "dst_%u_%u_%u_%u_%u",
  81                                 cookie->qp->qat_dev->qat_dev_id,
  82                                 txq->hw_bundle_number, txq->hw_queue_number,
  83                                 cookie->cookie_index, i);
  84
  85                 cookie->dst_memzones[i] = rte_memzone_reserve_aligned(
  86                                 dst_memz_name, RTE_PMD_QAT_COMP_IM_BUFFER_SIZE,
  87                                 cookie->socket_id, RTE_MEMZONE_IOVA_CONTIG,
  88                                 RTE_CACHE_LINE_SIZE);
  89
  90                 if (cookie->dst_memzones[i] == NULL) {
  91                         QAT_DP_LOG(ERR,
  92                                 "QAT PMD: failed to allocate dst buffer memzone");
  93
  94                         /* let's free all memzones allocated up to now */
  95                         qat_comp_free_split_op_memzones(cookie, i);
  96
  97                         return -ENOMEM;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 int
 105 qat_comp_build_request(void *in_op, uint8_t *out_msg,
 106                        void *op_cookie,
 107                        enum qat_device_gen qat_dev_gen __rte_unused)
 108 {
 109         struct rte_comp_op *op = in_op;
 110         struct qat_comp_op_cookie *cookie =
 111                         (struct qat_comp_op_cookie *)op_cookie;
 112         struct qat_comp_stream *stream;
 113         struct qat_comp_xform *qat_xform;
 114         const uint8_t *tmpl;
 115         struct icp_qat_fw_comp_req *comp_req =
 116             (struct icp_qat_fw_comp_req *)out_msg;
 117
 118         if (op->op_type == RTE_COMP_OP_STATEFUL) {
 119                 stream = op->stream;
 120                 qat_xform = &stream->qat_xform;
 121                 if (unlikely(qat_xform->qat_comp_request_type !=
 122                              QAT_COMP_REQUEST_DECOMPRESS)) {
 123                         QAT_DP_LOG(ERR, "QAT PMD does not support stateful compression");
 124                         op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 125                         return -EINVAL;
 126                 }
 127                 if (unlikely(stream->op_in_progress)) {
 128                         QAT_DP_LOG(ERR, "QAT PMD does not support running multiple stateful operations on the same stream at once");
 129                         op->status = RTE_COMP_OP_STATUS_INVALID_STATE;
 130                         return -EINVAL;
 131                 }
 132                 stream->op_in_progress = 1;
 133         } else {
 134                 stream = NULL;
 135                 qat_xform = op->private_xform;
 136         }
 137         tmpl = (uint8_t *)&qat_xform->qat_comp_req_tmpl;
 138
 139         rte_mov128(out_msg, tmpl);
 140         comp_req->comn_mid.opaque_data = (uint64_t)(uintptr_t)op;
 141
 142         if (likely(qat_xform->qat_comp_request_type ==
 143                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)) {
 144
 145                 if (unlikely(op->src.length > QAT_FALLBACK_THLD)) {
 146                         /* the operation must be split into pieces */
 147                         if (qat_xform->checksum_type !=
 148                                         RTE_COMP_CHECKSUM_NONE) {
 149                                 /* fallback to fixed compression in case any
 150                                  * checksum calculation was requested
 151                                  */
 152                                 qat_comp_fallback_to_fixed(comp_req);
 153                         } else {
 154                                 /* calculate num. of descriptors for split op */
 155                                 unsigned int nb_descriptors_needed =
 156                                         op->src.length / QAT_FALLBACK_THLD + 1;
 157                                 /* allocate memzone for output data */
 158                                 if (qat_comp_allocate_split_op_memzones(
 159                                                cookie, nb_descriptors_needed)) {
 160                                         /* out of memory, fallback to fixed */
 161                                         qat_comp_fallback_to_fixed(comp_req);
 162                                 } else {
 163                                         QAT_DP_LOG(DEBUG,
 164                                                         "Input data is too big, op must be split into %u descriptors",
 165                                                         nb_descriptors_needed);
 166                                         return (int) nb_descriptors_needed;
 167                                 }
 168                         }
 169                 }
 170
 171                 /* set BFINAL bit according to flush_flag */
 172                 comp_req->comp_pars.req_par_flags =
 173                         ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 174                                 ICP_QAT_FW_COMP_SOP,
 175                                 ICP_QAT_FW_COMP_EOP,
 176                                 op->flush_flag == RTE_COMP_FLUSH_FINAL ?
 177                                         ICP_QAT_FW_COMP_BFINAL
 178                                         : ICP_QAT_FW_COMP_NOT_BFINAL,
 179                                 ICP_QAT_FW_COMP_CNV,
 180                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 181
 182         } else if (op->op_type == RTE_COMP_OP_STATEFUL) {
 183
 184                 comp_req->comp_pars.req_par_flags =
 185                         ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 186                                 (stream->start_of_packet) ?
 187                                         ICP_QAT_FW_COMP_SOP
 188                                       : ICP_QAT_FW_COMP_NOT_SOP,
 189                                 (op->flush_flag == RTE_COMP_FLUSH_FULL ||
 190                                  op->flush_flag == RTE_COMP_FLUSH_FINAL) ?
 191                                         ICP_QAT_FW_COMP_EOP
 192                                       : ICP_QAT_FW_COMP_NOT_EOP,
 193                                 ICP_QAT_FW_COMP_NOT_BFINAL,
 194                                 ICP_QAT_FW_COMP_CNV,
 195                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 196         }
 197
 198         /* common for sgl and flat buffers */
 199         comp_req->comp_pars.comp_len = op->src.length;
 200         comp_req->comp_pars.out_buffer_sz = rte_pktmbuf_pkt_len(op->m_dst) -
 201                         op->dst.offset;
 202
 203         if (op->m_src->next != NULL || op->m_dst->next != NULL) {
 204                 /* sgl */
 205                 int ret = 0;
 206
 207                 ICP_QAT_FW_COMN_PTR_TYPE_SET(comp_req->comn_hdr.comn_req_flags,
 208                                 QAT_COMN_PTR_TYPE_SGL);
 209
 210                 if (unlikely(op->m_src->nb_segs > cookie->src_nb_elems)) {
 211                         /* we need to allocate more elements in SGL*/
 212                         void *tmp;
 213
 214                         tmp = rte_realloc_socket(cookie->qat_sgl_src_d,
 215                                           sizeof(struct qat_sgl) +
 216                                           sizeof(struct qat_flat_buf) *
 217                                           op->m_src->nb_segs, 64,
 218                                           cookie->socket_id);
 219
 220                         if (unlikely(tmp == NULL)) {
 221                                 QAT_DP_LOG(ERR, "QAT PMD can't allocate memory"
 222                                            " for %d elements of SGL",
 223                                            op->m_src->nb_segs);
 224                                 op->status = RTE_COMP_OP_STATUS_ERROR;
 225                                 /* clear op-in-progress flag */
 226                                 if (stream)
 227                                         stream->op_in_progress = 0;
 228                                 return -ENOMEM;
 229                         }
 230                         /* new SGL is valid now */
 231                         cookie->qat_sgl_src_d = (struct qat_sgl *)tmp;
 232                         cookie->src_nb_elems = op->m_src->nb_segs;
 233                         cookie->qat_sgl_src_phys_addr =
 234                                 rte_malloc_virt2iova(cookie->qat_sgl_src_d);
 235                 }
 236
 237                 ret = qat_sgl_fill_array(op->m_src,
 238                                 op->src.offset,
 239                                 cookie->qat_sgl_src_d,
 240                                 op->src.length,
 241                                 cookie->src_nb_elems);
 242                 if (ret) {
 243                         QAT_DP_LOG(ERR, "QAT PMD Cannot fill source sgl array");
 244                         op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 245                         /* clear op-in-progress flag */
 246                         if (stream)
 247                                 stream->op_in_progress = 0;
 248                         return ret;
 249                 }
 250
 251                 if (unlikely(op->m_dst->nb_segs > cookie->dst_nb_elems)) {
 252                         /* we need to allocate more elements in SGL*/
 253                         struct qat_sgl *tmp;
 254
 255                         tmp = rte_realloc_socket(cookie->qat_sgl_dst_d,
 256                                           sizeof(struct qat_sgl) +
 257                                           sizeof(struct qat_flat_buf) *
 258                                           op->m_dst->nb_segs, 64,
 259                                           cookie->socket_id);
 260
 261                         if (unlikely(tmp == NULL)) {
 262                                 QAT_DP_LOG(ERR, "QAT PMD can't allocate memory"
 263                                            " for %d elements of SGL",
 264                                            op->m_dst->nb_segs);
 265                                 op->status = RTE_COMP_OP_STATUS_ERROR;
 266                                 /* clear op-in-progress flag */
 267                                 if (stream)
 268                                         stream->op_in_progress = 0;
 269                                 return -ENOMEM;
 270                         }
 271                         /* new SGL is valid now */
 272                         cookie->qat_sgl_dst_d = (struct qat_sgl *)tmp;
 273                         cookie->dst_nb_elems = op->m_dst->nb_segs;
 274                         cookie->qat_sgl_dst_phys_addr =
 275                                 rte_malloc_virt2iova(cookie->qat_sgl_dst_d);
 276                 }
 277
 278                 ret = qat_sgl_fill_array(op->m_dst,
 279                                 op->dst.offset,
 280                                 cookie->qat_sgl_dst_d,
 281                                 comp_req->comp_pars.out_buffer_sz,
 282                                 cookie->dst_nb_elems);
 283                 if (ret) {
 284                         QAT_DP_LOG(ERR, "QAT PMD Cannot fill dest. sgl array");
 285                         op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
 286                         /* clear op-in-progress flag */
 287                         if (stream)
 288                                 stream->op_in_progress = 0;
 289                         return ret;
 290                 }
 291
 292                 comp_req->comn_mid.src_data_addr =
 293                                 cookie->qat_sgl_src_phys_addr;
 294                 comp_req->comn_mid.dest_data_addr =
 295                                 cookie->qat_sgl_dst_phys_addr;
 296                 comp_req->comn_mid.src_length = 0;
 297                 comp_req->comn_mid.dst_length = 0;
 298
 299         } else {
 300                 /* flat aka linear buffer */
 301                 ICP_QAT_FW_COMN_PTR_TYPE_SET(comp_req->comn_hdr.comn_req_flags,
 302                                 QAT_COMN_PTR_TYPE_FLAT);
 303                 comp_req->comn_mid.src_length = op->src.length;
 304                 comp_req->comn_mid.dst_length =
 305                                 comp_req->comp_pars.out_buffer_sz;
 306
 307                 comp_req->comn_mid.src_data_addr =
 308                     rte_pktmbuf_iova_offset(op->m_src, op->src.offset);
 309                 comp_req->comn_mid.dest_data_addr =
 310                     rte_pktmbuf_iova_offset(op->m_dst, op->dst.offset);
 311         }
 312
 313         if (unlikely(rte_pktmbuf_pkt_len(op->m_dst) < QAT_MIN_OUT_BUF_SIZE)) {
 314                 /* QAT doesn't support dest. buffer lower
 315                  * than QAT_MIN_OUT_BUF_SIZE. Propagate error mark
 316                  * by converting this request to the null one
 317                  * and check the status in the response.
 318                  */
 319                 QAT_DP_LOG(WARNING, "QAT destination buffer too small - resend with larger buffer");
 320                 comp_req->comn_hdr.service_type = ICP_QAT_FW_COMN_REQ_NULL;
 321                 comp_req->comn_hdr.service_cmd_id = ICP_QAT_FW_NULL_REQ_SERV_ID;
 322                 cookie->error = RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 323         }
 324
 325 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 326         QAT_DP_LOG(DEBUG, "Direction: %s",
 327             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS ?
 328                             "decompression" : "compression");
 329         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message:", comp_req,
 330                     sizeof(struct icp_qat_fw_comp_req));
 331 #endif
 332         return 0;
 333 }
 334
 335 static inline uint32_t
 336 adf_modulo(uint32_t data, uint32_t modulo_mask)
 337 {
 338         return data & modulo_mask;
 339 }
 340
 341 static inline void
 342 qat_comp_mbuf_skip(struct rte_mbuf **mbuf, uint32_t *offset, uint32_t len)
 343 {
 344         while (*offset + len >= rte_pktmbuf_data_len(*mbuf)) {
 345                 len -= (rte_pktmbuf_data_len(*mbuf) - *offset);
 346                 *mbuf = (*mbuf)->next;
 347                 *offset = 0;
 348         }
 349         *offset = len;
 350 }
 351
 352 int
 353 qat_comp_build_multiple_requests(void *in_op, struct qat_qp *qp,
 354                                  uint32_t parent_tail, int nb_descr)
 355 {
 356         struct rte_comp_op op_backup;
 357         struct rte_mbuf dst_mbuf;
 358         struct rte_comp_op *op = in_op;
 359         struct qat_queue *txq = &(qp->tx_q);
 360         uint8_t *base_addr = (uint8_t *)txq->base_addr;
 361         uint8_t *out_msg = base_addr + parent_tail;
 362         uint32_t tail = parent_tail;
 363         struct icp_qat_fw_comp_req *comp_req =
 364                         (struct icp_qat_fw_comp_req *)out_msg;
 365         struct qat_comp_op_cookie *parent_cookie =
 366                         (struct qat_comp_op_cookie *)
 367                         qp->op_cookies[parent_tail / txq->msg_size];
 368         struct qat_comp_op_cookie *child_cookie;
 369         uint16_t dst_data_size =
 370                         RTE_MIN(RTE_PMD_QAT_COMP_IM_BUFFER_SIZE, 65535);
 371         uint32_t data_to_enqueue = op->src.length - QAT_FALLBACK_THLD;
 372         int num_descriptors_built = 1;
 373         int ret;
 374
 375         QAT_DP_LOG(DEBUG, "op %p, parent_cookie %p", op, parent_cookie);
 376
 377         /* copy original op to the local variable for restoring later */
 378         rte_memcpy(&op_backup, op, sizeof(op_backup));
 379
 380         parent_cookie->nb_child_responses = 0;
 381         parent_cookie->nb_children = 0;
 382         parent_cookie->split_op = 1;
 383         parent_cookie->dst_data = op->m_dst;
 384         parent_cookie->dst_data_offset = op->dst.offset;
 385
 386         op->src.length = QAT_FALLBACK_THLD;
 387         op->flush_flag = RTE_COMP_FLUSH_FULL;
 388
 389         QAT_DP_LOG(DEBUG, "parent op src len %u dst len %u",
 390                         op->src.length, op->m_dst->pkt_len);
 391
 392         ret = qat_comp_build_request(in_op, out_msg, parent_cookie,
 393                         qp->qat_dev_gen);
 394         if (ret != 0) {
 395                 /* restore op and clear cookie */
 396                 QAT_DP_LOG(WARNING, "Failed to build parent descriptor");
 397                 op->src.length = op_backup.src.length;
 398                 op->flush_flag = op_backup.flush_flag;
 399                 parent_cookie->split_op = 0;
 400                 return ret;
 401         }
 402
 403         /* prepare local dst mbuf */
 404         rte_memcpy(&dst_mbuf, op->m_dst, sizeof(dst_mbuf));
 405         rte_pktmbuf_reset(&dst_mbuf);
 406         dst_mbuf.buf_len = dst_data_size;
 407         dst_mbuf.data_len = dst_data_size;
 408         dst_mbuf.pkt_len = dst_data_size;
 409         dst_mbuf.data_off = 0;
 410
 411         /* update op for the child operations */
 412         op->m_dst = &dst_mbuf;
 413         op->dst.offset = 0;
 414
 415         while (data_to_enqueue) {
 416                 const struct rte_memzone *mz =
 417                         parent_cookie->dst_memzones[num_descriptors_built - 1];
 418                 uint32_t src_data_size = RTE_MIN(data_to_enqueue,
 419                                 QAT_FALLBACK_THLD);
 420                 uint32_t cookie_index;
 421
 422                 /* update params for the next op */
 423                 op->src.offset += QAT_FALLBACK_THLD;
 424                 op->src.length = src_data_size;
 425                 op->flush_flag = (src_data_size == data_to_enqueue) ?
 426                         op_backup.flush_flag : RTE_COMP_FLUSH_FULL;
 427
 428                 /* update dst mbuf for the next op (use memzone for dst data) */
 429                 dst_mbuf.buf_addr = mz->addr;
 430                 dst_mbuf.buf_iova = mz->iova;
 431
 432                 /* move the tail and calculate next cookie index */
 433                 tail = adf_modulo(tail + txq->msg_size, txq->modulo_mask);
 434                 cookie_index = tail / txq->msg_size;
 435                 child_cookie = (struct qat_comp_op_cookie *)
 436                                 qp->op_cookies[cookie_index];
 437                 comp_req = (struct icp_qat_fw_comp_req *)(base_addr + tail);
 438
 439                 /* update child cookie */
 440                 child_cookie->split_op = 1; /* must be set for child as well */
 441                 child_cookie->parent_cookie = parent_cookie; /* same as above */
 442                 child_cookie->nb_children = 0;
 443                 child_cookie->dest_buffer = mz->addr;
 444
 445                 QAT_DP_LOG(DEBUG,
 446                                 "cookie_index %u, child_cookie %p, comp_req %p",
 447                                 cookie_index, child_cookie, comp_req);
 448                 QAT_DP_LOG(DEBUG,
 449                                 "data_to_enqueue %u, num_descriptors_built %d",
 450                                 data_to_enqueue, num_descriptors_built);
 451                 QAT_DP_LOG(DEBUG, "child op src len %u dst len %u",
 452                                 op->src.length, op->m_dst->pkt_len);
 453
 454                 /* build the request */
 455                 ret = qat_comp_build_request(op, (uint8_t *)comp_req,
 456                                 child_cookie, qp->qat_dev_gen);
 457                 if (ret < 0) {
 458                         QAT_DP_LOG(WARNING, "Failed to build child descriptor");
 459                         /* restore op and clear cookie */
 460                         rte_memcpy(op, &op_backup, sizeof(op_backup));
 461                         parent_cookie->split_op = 0;
 462                         parent_cookie->nb_children = 0;
 463                         return ret;
 464                 }
 465
 466                 data_to_enqueue -= src_data_size;
 467                 num_descriptors_built++;
 468         }
 469
 470         /* restore backed up original op */
 471         rte_memcpy(op, &op_backup, sizeof(op_backup));
 472
 473         if (nb_descr != num_descriptors_built)
 474                 QAT_DP_LOG(ERR, "split op. expected %d, built %d",
 475                                 nb_descr, num_descriptors_built);
 476
 477         parent_cookie->nb_children = num_descriptors_built - 1;
 478         return num_descriptors_built;
 479 }
 480
 481 static inline void
 482 qat_comp_response_data_copy(struct qat_comp_op_cookie *cookie,
 483                        struct rte_comp_op *rx_op)
 484 {
 485         struct qat_comp_op_cookie *pc = cookie->parent_cookie;
 486         struct rte_mbuf *sgl_buf = pc->dst_data;
 487         void *op_dst_addr = rte_pktmbuf_mtod_offset(sgl_buf, uint8_t *,
 488                                                     pc->dst_data_offset);
 489
 490         /* number of bytes left in the current segment */
 491         uint32_t left_in_current = rte_pktmbuf_data_len(sgl_buf) -
 492                         pc->dst_data_offset;
 493
 494         uint32_t prod, sent;
 495
 496         if (rx_op->produced <= left_in_current) {
 497                 rte_memcpy(op_dst_addr, cookie->dest_buffer,
 498                                 rx_op->produced);
 499                 /* calculate dst mbuf and offset for the next child op */
 500                 if (rx_op->produced == left_in_current) {
 501                         pc->dst_data = sgl_buf->next;
 502                         pc->dst_data_offset = 0;
 503                 } else
 504                         pc->dst_data_offset += rx_op->produced;
 505         } else {
 506                 rte_memcpy(op_dst_addr, cookie->dest_buffer,
 507                                 left_in_current);
 508                 sgl_buf = sgl_buf->next;
 509                 prod = rx_op->produced - left_in_current;
 510                 sent = left_in_current;
 511                 while (prod > rte_pktmbuf_data_len(sgl_buf)) {
 512                         op_dst_addr = rte_pktmbuf_mtod_offset(sgl_buf,
 513                                         uint8_t *, 0);
 514
 515                         rte_memcpy(op_dst_addr,
 516                                         ((uint8_t *)cookie->dest_buffer) +
 517                                         sent,
 518                                         rte_pktmbuf_data_len(sgl_buf));
 519
 520                         prod -= rte_pktmbuf_data_len(sgl_buf);
 521                         sent += rte_pktmbuf_data_len(sgl_buf);
 522
 523                         sgl_buf = sgl_buf->next;
 524                 }
 525
 526                 op_dst_addr = rte_pktmbuf_mtod_offset(sgl_buf, uint8_t *, 0);
 527
 528                 rte_memcpy(op_dst_addr,
 529                                 ((uint8_t *)cookie->dest_buffer) + sent,
 530                                 prod);
 531
 532                 /* calculate dst mbuf and offset for the next child op */
 533                 if (prod == rte_pktmbuf_data_len(sgl_buf)) {
 534                         pc->dst_data = sgl_buf->next;
 535                         pc->dst_data_offset = 0;
 536                 } else {
 537                         pc->dst_data = sgl_buf;
 538                         pc->dst_data_offset = prod;
 539                 }
 540         }
 541 }
 542
 543 int
 544 qat_comp_process_response(void **op, uint8_t *resp, void *op_cookie,
 545                           uint64_t *dequeue_err_count)
 546 {
 547         struct icp_qat_fw_comp_resp *resp_msg =
 548                         (struct icp_qat_fw_comp_resp *)resp;
 549         struct qat_comp_op_cookie *cookie =
 550                         (struct qat_comp_op_cookie *)op_cookie;
 551
 552         struct icp_qat_fw_resp_comp_pars *comp_resp1 =
 553           (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
 554
 555         QAT_DP_LOG(DEBUG, "input counter = %u, output counter = %u",
 556                    comp_resp1->input_byte_counter,
 557                    comp_resp1->output_byte_counter);
 558
 559         struct rte_comp_op *rx_op = (struct rte_comp_op *)(uintptr_t)
 560                         (resp_msg->opaque_data);
 561         struct qat_comp_stream *stream;
 562         struct qat_comp_xform *qat_xform;
 563         int err = resp_msg->comn_resp.comn_status &
 564                         ((1 << QAT_COMN_RESP_CMP_STATUS_BITPOS) |
 565                          (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS));
 566
 567         if (rx_op->op_type == RTE_COMP_OP_STATEFUL) {
 568                 stream = rx_op->stream;
 569                 qat_xform = &stream->qat_xform;
 570                 /* clear op-in-progress flag */
 571                 stream->op_in_progress = 0;
 572         } else {
 573                 stream = NULL;
 574                 qat_xform = rx_op->private_xform;
 575         }
 576
 577 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 578         QAT_DP_LOG(DEBUG, "Direction: %s",
 579             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS ?
 580             "decompression" : "compression");
 581         QAT_DP_HEXDUMP_LOG(DEBUG,  "qat_response:", (uint8_t *)resp_msg,
 582                         sizeof(struct icp_qat_fw_comp_resp));
 583 #endif
 584
 585         if (unlikely(cookie->error)) {
 586                 rx_op->status = cookie->error;
 587                 cookie->error = 0;
 588                 ++(*dequeue_err_count);
 589                 rx_op->debug_status = 0;
 590                 rx_op->consumed = 0;
 591                 rx_op->produced = 0;
 592                 *op = (void *)rx_op;
 593                 /* also in this case number of returned ops */
 594                 /* must be equal to one, */
 595                 /* appropriate status (error) must be set as well */
 596                 return 1;
 597         }
 598
 599         if (likely(qat_xform->qat_comp_request_type
 600                         != QAT_COMP_REQUEST_DECOMPRESS)) {
 601                 if (unlikely(ICP_QAT_FW_COMN_HDR_CNV_FLAG_GET(
 602                                 resp_msg->comn_resp.hdr_flags)
 603                                         == ICP_QAT_FW_COMP_NO_CNV)) {
 604                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 605                         rx_op->debug_status = ERR_CODE_QAT_COMP_WRONG_FW;
 606                         *op = (void *)rx_op;
 607                         QAT_DP_LOG(ERR,
 608                                         "This QAT hardware doesn't support compression operation");
 609                         ++(*dequeue_err_count);
 610                         return 1;
 611                 }
 612         }
 613
 614         if (err) {
 615                 if (unlikely((err & (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS))
 616                              && (qat_xform->qat_comp_request_type
 617                                  == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS))) {
 618                         QAT_DP_LOG(ERR, "QAT intermediate buffer may be too "
 619                             "small for output, try configuring a larger size");
 620                 }
 621
 622                 int8_t cmp_err_code =
 623                         (int8_t)resp_msg->comn_resp.comn_error.cmp_err_code;
 624                 int8_t xlat_err_code =
 625                         (int8_t)resp_msg->comn_resp.comn_error.xlat_err_code;
 626
 627                 /* handle recoverable out-of-buffer condition in stateful
 628                  * decompression scenario
 629                  */
 630                 if (cmp_err_code == ERR_CODE_OVERFLOW_ERROR && !xlat_err_code
 631                                 && qat_xform->qat_comp_request_type
 632                                         == QAT_COMP_REQUEST_DECOMPRESS
 633                                 && rx_op->op_type == RTE_COMP_OP_STATEFUL) {
 634                         struct icp_qat_fw_resp_comp_pars *comp_resp =
 635                                         &resp_msg->comp_resp_pars;
 636                         rx_op->status =
 637                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
 638                         rx_op->consumed = comp_resp->input_byte_counter;
 639                         rx_op->produced = comp_resp->output_byte_counter;
 640                         stream->start_of_packet = 0;
 641                 } else if ((cmp_err_code == ERR_CODE_OVERFLOW_ERROR
 642                           && !xlat_err_code)
 643                                 ||
 644                     (!cmp_err_code && xlat_err_code == ERR_CODE_OVERFLOW_ERROR)
 645                                 ||
 646                     (cmp_err_code == ERR_CODE_OVERFLOW_ERROR &&
 647                      xlat_err_code == ERR_CODE_OVERFLOW_ERROR)){
 648
 649                         struct icp_qat_fw_resp_comp_pars *comp_resp =
 650                                         (struct icp_qat_fw_resp_comp_pars *)
 651                                         &resp_msg->comp_resp_pars;
 652
 653                         /* handle recoverable out-of-buffer condition
 654                          * in stateless compression scenario
 655                          */
 656                         if (comp_resp->input_byte_counter) {
 657                                 if ((qat_xform->qat_comp_request_type
 658                                 == QAT_COMP_REQUEST_FIXED_COMP_STATELESS) ||
 659                                     (qat_xform->qat_comp_request_type
 660                                 == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)) {
 661
 662                                         rx_op->status =
 663                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
 664                                         rx_op->consumed =
 665                                                 comp_resp->input_byte_counter;
 666                                         rx_op->produced =
 667                                                 comp_resp->output_byte_counter;
 668                                 } else
 669                                         rx_op->status =
 670                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 671                         } else
 672                                 rx_op->status =
 673                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 674                 } else
 675                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 676
 677                 ++(*dequeue_err_count);
 678                 rx_op->debug_status =
 679                         *((uint16_t *)(&resp_msg->comn_resp.comn_error));
 680         } else {
 681                 struct icp_qat_fw_resp_comp_pars *comp_resp =
 682                   (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
 683
 684                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 685                 rx_op->consumed = comp_resp->input_byte_counter;
 686                 rx_op->produced = comp_resp->output_byte_counter;
 687                 if (stream)
 688                         stream->start_of_packet = 0;
 689
 690                 if (qat_xform->checksum_type != RTE_COMP_CHECKSUM_NONE) {
 691                         if (qat_xform->checksum_type == RTE_COMP_CHECKSUM_CRC32)
 692                                 rx_op->output_chksum = comp_resp->curr_crc32;
 693                         else if (qat_xform->checksum_type ==
 694                                         RTE_COMP_CHECKSUM_ADLER32)
 695                                 rx_op->output_chksum = comp_resp->curr_adler_32;
 696                         else
 697                                 rx_op->output_chksum = comp_resp->curr_chksum;
 698                 }
 699         }
 700         QAT_DP_LOG(DEBUG, "About to check for split op :cookies: %p %p, split:%u",
 701                 cookie, cookie->parent_cookie, cookie->split_op);
 702
 703         if (cookie->split_op) {
 704                 *op = NULL;
 705                 struct qat_comp_op_cookie *pc = cookie->parent_cookie;
 706
 707                 if (cookie->nb_children > 0) {
 708                         QAT_DP_LOG(DEBUG, "Parent");
 709                         /* parent - don't return until all children
 710                          * responses are collected
 711                          */
 712                         cookie->total_consumed = rx_op->consumed;
 713                         cookie->total_produced = rx_op->produced;
 714                         if (err) {
 715                                 cookie->error = rx_op->status;
 716                                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 717                         } else {
 718                                 /* calculate dst mbuf and offset for child op */
 719                                 qat_comp_mbuf_skip(&cookie->dst_data,
 720                                                 &cookie->dst_data_offset,
 721                                                 rx_op->produced);
 722                         }
 723                 } else {
 724                         QAT_DP_LOG(DEBUG, "Child");
 725                         if (pc->error == RTE_COMP_OP_STATUS_SUCCESS) {
 726                                 if (err)
 727                                         pc->error = rx_op->status;
 728                                 if (rx_op->produced) {
 729                                         /* this covers both SUCCESS and
 730                                          * OUT_OF_SPACE_RECOVERABLE cases
 731                                          */
 732                                         qat_comp_response_data_copy(cookie,
 733                                                         rx_op);
 734                                         pc->total_consumed += rx_op->consumed;
 735                                         pc->total_produced += rx_op->produced;
 736                                 }
 737                         }
 738                         rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 739
 740                         pc->nb_child_responses++;
 741
 742                         /* (child) cookie fields have to be reset
 743                          * to avoid problems with reusability -
 744                          * rx and tx queue starting from index zero
 745                          */
 746                         cookie->nb_children = 0;
 747                         cookie->split_op = 0;
 748                         cookie->nb_child_responses = 0;
 749                         cookie->dest_buffer = NULL;
 750
 751                         if (pc->nb_child_responses == pc->nb_children) {
 752                                 uint8_t child_resp;
 753
 754                                 /* parent should be included as well */
 755                                 child_resp = pc->nb_child_responses + 1;
 756
 757                                 rx_op->status = pc->error;
 758                                 rx_op->consumed = pc->total_consumed;
 759                                 rx_op->produced = pc->total_produced;
 760                                 *op = (void *)rx_op;
 761
 762                                 /* free memzones used for dst data */
 763                                 qat_comp_free_split_op_memzones(pc,
 764                                                 pc->nb_children);
 765
 766                                 /* (parent) cookie fields have to be reset
 767                                  * to avoid problems with reusability -
 768                                  * rx and tx queue starting from index zero
 769                                  */
 770                                 pc->nb_children = 0;
 771                                 pc->split_op = 0;
 772                                 pc->nb_child_responses = 0;
 773                                 pc->error = RTE_COMP_OP_STATUS_SUCCESS;
 774
 775                                 return child_resp;
 776                         }
 777                 }
 778                 return 0;
 779         }
 780
 781         *op = (void *)rx_op;
 782         return 1;
 783 }
 784
 785 unsigned int
 786 qat_comp_xform_size(void)
 787 {
 788         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_xform), 8);
 789 }
 790
 791 unsigned int
 792 qat_comp_stream_size(void)
 793 {
 794         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_stream), 8);
 795 }
 796
 797 static void
 798 qat_comp_create_req_hdr(struct icp_qat_fw_comn_req_hdr *header,
 799             enum qat_comp_request_type request)
 800 {
 801         if (request == QAT_COMP_REQUEST_FIXED_COMP_STATELESS)
 802                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_STATIC;
 803         else if (request == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)
 804                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DYNAMIC;
 805         else if (request == QAT_COMP_REQUEST_DECOMPRESS)
 806                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DECOMPRESS;
 807
 808         header->service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_COMP;
 809         header->hdr_flags =
 810             ICP_QAT_FW_COMN_HDR_FLAGS_BUILD(ICP_QAT_FW_COMN_REQ_FLAG_SET);
 811
 812         header->comn_req_flags = ICP_QAT_FW_COMN_FLAGS_BUILD(
 813             QAT_COMN_CD_FLD_TYPE_16BYTE_DATA, QAT_COMN_PTR_TYPE_FLAT);
 814 }
 815
 816 static int
 817 qat_comp_create_templates(struct qat_comp_xform *qat_xform,
 818                           const struct rte_memzone *interm_buff_mz,
 819                           const struct rte_comp_xform *xform,
 820                           const struct qat_comp_stream *stream,
 821                           enum rte_comp_op_type op_type,
 822                           enum qat_device_gen qat_dev_gen)
 823 {
 824         struct icp_qat_fw_comp_req *comp_req;
 825         uint32_t req_par_flags;
 826         int res;
 827
 828         if (unlikely(qat_xform == NULL)) {
 829                 QAT_LOG(ERR, "Session was not created for this device");
 830                 return -EINVAL;
 831         }
 832
 833         if (op_type == RTE_COMP_OP_STATEFUL) {
 834                 if (unlikely(stream == NULL)) {
 835                         QAT_LOG(ERR, "Stream must be non null for stateful op");
 836                         return -EINVAL;
 837                 }
 838                 if (unlikely(qat_xform->qat_comp_request_type !=
 839                              QAT_COMP_REQUEST_DECOMPRESS)) {
 840                         QAT_LOG(ERR, "QAT PMD does not support stateful compression");
 841                         return -ENOTSUP;
 842                 }
 843         }
 844
 845         if (qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS)
 846                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 847                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 848                                 ICP_QAT_FW_COMP_BFINAL,
 849                                 ICP_QAT_FW_COMP_CNV,
 850                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 851         else
 852                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 853                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 854                                 ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_CNV,
 855                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 856
 857         comp_req = &qat_xform->qat_comp_req_tmpl;
 858
 859         /* Initialize header */
 860         qat_comp_create_req_hdr(&comp_req->comn_hdr,
 861                                         qat_xform->qat_comp_request_type);
 862
 863         if (op_type == RTE_COMP_OP_STATEFUL) {
 864                 comp_req->comn_hdr.serv_specif_flags =
 865                                 ICP_QAT_FW_COMP_FLAGS_BUILD(
 866                         ICP_QAT_FW_COMP_STATEFUL_SESSION,
 867                         ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
 868                         ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
 869                         ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
 870                         ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
 871
 872                 /* Decompression state registers */
 873                 comp_req->comp_cd_ctrl.comp_state_addr =
 874                                 stream->state_registers_decomp_phys;
 875
 876                 /* RAM bank flags */
 877                 comp_req->comp_cd_ctrl.ram_bank_flags =
 878                                 qat_comp_gen_dev_ops[qat_dev_gen]
 879                                         .qat_comp_get_ram_bank_flags();
 880
 881                 comp_req->comp_cd_ctrl.ram_banks_addr =
 882                                 stream->inflate_context_phys;
 883         } else {
 884                 comp_req->comn_hdr.serv_specif_flags =
 885                                 ICP_QAT_FW_COMP_FLAGS_BUILD(
 886                         ICP_QAT_FW_COMP_STATELESS_SESSION,
 887                         ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
 888                         ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
 889                         ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
 890                         ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
 891         }
 892
 893         res = qat_comp_gen_dev_ops[qat_dev_gen].qat_comp_set_slice_cfg_word(
 894                         qat_xform, xform, op_type,
 895                         comp_req->cd_pars.sl.comp_slice_cfg_word);
 896         if (res)
 897                 return res;
 898
 899         comp_req->comp_pars.initial_adler = 1;
 900         comp_req->comp_pars.initial_crc32 = 0;
 901         comp_req->comp_pars.req_par_flags = req_par_flags;
 902
 903
 904         if (qat_xform->qat_comp_request_type ==
 905                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS ||
 906             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
 907                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 908                                             ICP_QAT_FW_SLICE_DRAM_WR);
 909                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 910                                             ICP_QAT_FW_SLICE_COMP);
 911         } else if (qat_xform->qat_comp_request_type ==
 912                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS) {
 913
 914                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 915                                 ICP_QAT_FW_SLICE_XLAT);
 916                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 917                                 ICP_QAT_FW_SLICE_COMP);
 918
 919                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 920                                 ICP_QAT_FW_SLICE_DRAM_WR);
 921                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 922                                 ICP_QAT_FW_SLICE_XLAT);
 923
 924                 comp_req->u1.xlt_pars.inter_buff_ptr =
 925                                 (qat_comp_get_num_im_bufs_required(qat_dev_gen)
 926                                         == 0) ? 0 : interm_buff_mz->iova;
 927         }
 928
 929 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 930         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message template:", comp_req,
 931                     sizeof(struct icp_qat_fw_comp_req));
 932 #endif
 933         return 0;
 934 }
 935
 936 /**
 937  * Create driver private_xform data.
 938  *
 939  * @param dev
 940  *   Compressdev device
 941  * @param xform
 942  *   xform data from application
 943  * @param private_xform
 944  *   ptr where handle of pmd's private_xform data should be stored
 945  * @return
 946  *  - if successful returns 0
 947  *    and valid private_xform handle
 948  *  - <0 in error cases
 949  *  - Returns -EINVAL if input parameters are invalid.
 950  *  - Returns -ENOTSUP if comp device does not support the comp transform.
 951  *  - Returns -ENOMEM if the private_xform could not be allocated.
 952  */
 953 int
 954 qat_comp_private_xform_create(struct rte_compressdev *dev,
 955                               const struct rte_comp_xform *xform,
 956                               void **private_xform)
 957 {
 958         struct qat_comp_dev_private *qat = dev->data->dev_private;
 959         enum qat_device_gen qat_dev_gen = qat->qat_dev->qat_dev_gen;
 960         unsigned int im_bufs = qat_comp_get_num_im_bufs_required(qat_dev_gen);
 961
 962         if (unlikely(private_xform == NULL)) {
 963                 QAT_LOG(ERR, "QAT: private_xform parameter is NULL");
 964                 return -EINVAL;
 965         }
 966         if (unlikely(qat->xformpool == NULL)) {
 967                 QAT_LOG(ERR, "QAT device has no private_xform mempool");
 968                 return -ENOMEM;
 969         }
 970         if (rte_mempool_get(qat->xformpool, private_xform)) {
 971                 QAT_LOG(ERR, "Couldn't get object from qat xform mempool");
 972                 return -ENOMEM;
 973         }
 974
 975         struct qat_comp_xform *qat_xform =
 976                         (struct qat_comp_xform *)*private_xform;
 977
 978         if (xform->type == RTE_COMP_COMPRESS) {
 979
 980                 if (xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED ||
 981                   ((xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_DEFAULT)
 982                                    && qat->interm_buff_mz == NULL
 983                                    && im_bufs > 0))
 984                         qat_xform->qat_comp_request_type =
 985                                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS;
 986
 987                 else if ((xform->compress.deflate.huffman ==
 988                                 RTE_COMP_HUFFMAN_DYNAMIC ||
 989                                 xform->compress.deflate.huffman ==
 990                                                 RTE_COMP_HUFFMAN_DEFAULT) &&
 991                                 (qat->interm_buff_mz != NULL ||
 992                                                 im_bufs == 0))
 993
 994                         qat_xform->qat_comp_request_type =
 995                                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS;
 996
 997                 else {
 998                         QAT_LOG(ERR,
 999                                         "IM buffers needed for dynamic deflate. Set size in config file");
1000                         return -EINVAL;
1001                 }
1002
1003                 qat_xform->checksum_type = xform->compress.chksum;
1004
1005         } else {
1006                 qat_xform->qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
1007                 qat_xform->checksum_type = xform->decompress.chksum;
1008         }
1009
1010         if (qat_comp_create_templates(qat_xform, qat->interm_buff_mz, xform,
1011                                       NULL, RTE_COMP_OP_STATELESS,
1012                                       qat_dev_gen)) {
1013                 QAT_LOG(ERR, "QAT: Problem with setting compression");
1014                 return -EINVAL;
1015         }
1016         return 0;
1017 }
1018
1019 /**
1020  * Free driver private_xform data.
1021  *
1022  * @param dev
1023  *   Compressdev device
1024  * @param private_xform
1025  *   handle of pmd's private_xform data
1026  * @return
1027  *  - 0 if successful
1028  *  - <0 in error cases
1029  *  - Returns -EINVAL if input parameters are invalid.
1030  */
1031 int
1032 qat_comp_private_xform_free(struct rte_compressdev *dev __rte_unused,
1033                             void *private_xform)
1034 {
1035         struct qat_comp_xform *qat_xform =
1036                         (struct qat_comp_xform *)private_xform;
1037
1038         if (qat_xform) {
1039                 memset(qat_xform, 0, qat_comp_xform_size());
1040                 struct rte_mempool *mp = rte_mempool_from_obj(qat_xform);
1041
1042                 rte_mempool_put(mp, qat_xform);
1043                 return 0;
1044         }
1045         return -EINVAL;
1046 }
1047
1048 /**
1049  * Reset stream state for the next use.
1050  *
1051  * @param stream
1052  *   handle of pmd's private stream data
1053  */
1054 static void
1055 qat_comp_stream_reset(struct qat_comp_stream *stream)
1056 {
1057         if (stream) {
1058                 memset(&stream->qat_xform, 0, sizeof(struct qat_comp_xform));
1059                 stream->start_of_packet = 1;
1060                 stream->op_in_progress = 0;
1061         }
1062 }
1063
1064 /**
1065  * Create driver private stream data.
1066  *
1067  * @param dev
1068  *   Compressdev device
1069  * @param xform
1070  *   xform data
1071  * @param stream
1072  *   ptr where handle of pmd's private stream data should be stored
1073  * @return
1074  *  - Returns 0 if private stream structure has been created successfully.
1075  *  - Returns -EINVAL if input parameters are invalid.
1076  *  - Returns -ENOTSUP if comp device does not support STATEFUL operations.
1077  *  - Returns -ENOTSUP if comp device does not support the comp transform.
1078  *  - Returns -ENOMEM if the private stream could not be allocated.
1079  */
1080 int
1081 qat_comp_stream_create(struct rte_compressdev *dev,
1082                        const struct rte_comp_xform *xform,
1083                        void **stream)
1084 {
1085         struct qat_comp_dev_private *qat = dev->data->dev_private;
1086         struct qat_comp_stream *ptr;
1087
1088         if (unlikely(stream == NULL)) {
1089                 QAT_LOG(ERR, "QAT: stream parameter is NULL");
1090                 return -EINVAL;
1091         }
1092         if (unlikely(xform->type == RTE_COMP_COMPRESS)) {
1093                 QAT_LOG(ERR, "QAT: stateful compression not supported");
1094                 return -ENOTSUP;
1095         }
1096         if (unlikely(qat->streampool == NULL)) {
1097                 QAT_LOG(ERR, "QAT device has no stream mempool");
1098                 return -ENOMEM;
1099         }
1100         if (rte_mempool_get(qat->streampool, stream)) {
1101                 QAT_LOG(ERR, "Couldn't get object from qat stream mempool");
1102                 return -ENOMEM;
1103         }
1104
1105         ptr = (struct qat_comp_stream *) *stream;
1106         qat_comp_stream_reset(ptr);
1107         ptr->qat_xform.qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
1108         ptr->qat_xform.checksum_type = xform->decompress.chksum;
1109
1110         if (qat_comp_create_templates(&ptr->qat_xform, qat->interm_buff_mz,
1111                                       xform, ptr, RTE_COMP_OP_STATEFUL,
1112                                       qat->qat_dev->qat_dev_gen)) {
1113                 QAT_LOG(ERR, "QAT: problem with creating descriptor template for stream");
1114                 rte_mempool_put(qat->streampool, *stream);
1115                 *stream = NULL;
1116                 return -EINVAL;
1117         }
1118
1119         return 0;
1120 }
1121
1122 /**
1123  * Free driver private stream data.
1124  *
1125  * @param dev
1126  *   Compressdev device
1127  * @param stream
1128  *   handle of pmd's private stream data
1129  * @return
1130  *  - 0 if successful
1131  *  - <0 in error cases
1132  *  - Returns -EINVAL if input parameters are invalid.
1133  *  - Returns -ENOTSUP if comp device does not support STATEFUL operations.
1134  *  - Returns -EBUSY if can't free stream as there are inflight operations
1135  */
1136 int
1137 qat_comp_stream_free(struct rte_compressdev *dev, void *stream)
1138 {
1139         if (stream) {
1140                 struct qat_comp_dev_private *qat = dev->data->dev_private;
1141                 qat_comp_stream_reset((struct qat_comp_stream *) stream);
1142                 rte_mempool_put(qat->streampool, stream);
1143                 return 0;
1144         }
1145         return -EINVAL;
1146 }