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 #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 adf_modulo(uint32_t data, uint32_t modulo_mask)
 336 {
 337         return data & modulo_mask;
 338 }
 339
 340 static inline void
 341 qat_comp_mbuf_skip(struct rte_mbuf **mbuf, uint32_t *offset, uint32_t len)
 342 {
 343         while (*offset + len >= rte_pktmbuf_data_len(*mbuf)) {
 344                 len -= (rte_pktmbuf_data_len(*mbuf) - *offset);
 345                 *mbuf = (*mbuf)->next;
 346                 *offset = 0;
 347         }
 348         *offset = len;
 349 }
 350
 351 int
 352 qat_comp_build_multiple_requests(void *in_op, struct qat_qp *qp,
 353                                  uint32_t parent_tail, int nb_descr)
 354 {
 355         struct rte_comp_op op_backup;
 356         struct rte_mbuf dst_mbuf;
 357         struct rte_comp_op *op = in_op;
 358         struct qat_queue *txq = &(qp->tx_q);
 359         uint8_t *base_addr = (uint8_t *)txq->base_addr;
 360         uint8_t *out_msg = base_addr + parent_tail;
 361         uint32_t tail = parent_tail;
 362         struct icp_qat_fw_comp_req *comp_req =
 363                         (struct icp_qat_fw_comp_req *)out_msg;
 364         struct qat_comp_op_cookie *parent_cookie =
 365                         (struct qat_comp_op_cookie *)
 366                         qp->op_cookies[parent_tail / txq->msg_size];
 367         struct qat_comp_op_cookie *child_cookie;
 368         uint16_t dst_data_size =
 369                         RTE_MIN(RTE_PMD_QAT_COMP_IM_BUFFER_SIZE, 65535);
 370         uint32_t data_to_enqueue = op->src.length - QAT_FALLBACK_THLD;
 371         int num_descriptors_built = 1;
 372         int ret;
 373
 374         QAT_DP_LOG(DEBUG, "op %p, parent_cookie %p", op, parent_cookie);
 375
 376         /* copy original op to the local variable for restoring later */
 377         rte_memcpy(&op_backup, op, sizeof(op_backup));
 378
 379         parent_cookie->nb_child_responses = 0;
 380         parent_cookie->nb_children = 0;
 381         parent_cookie->split_op = 1;
 382         parent_cookie->dst_data = op->m_dst;
 383         parent_cookie->dst_data_offset = op->dst.offset;
 384
 385         op->src.length = QAT_FALLBACK_THLD;
 386         op->flush_flag = RTE_COMP_FLUSH_FULL;
 387
 388         QAT_DP_LOG(DEBUG, "parent op src len %u dst len %u",
 389                         op->src.length, op->m_dst->pkt_len);
 390
 391         ret = qat_comp_build_request(in_op, out_msg, parent_cookie,
 392                         qp->qat_dev_gen);
 393         if (ret != 0) {
 394                 /* restore op and clear cookie */
 395                 QAT_DP_LOG(WARNING, "Failed to build parent descriptor");
 396                 op->src.length = op_backup.src.length;
 397                 op->flush_flag = op_backup.flush_flag;
 398                 parent_cookie->split_op = 0;
 399                 return ret;
 400         }
 401
 402         /* prepare local dst mbuf */
 403         rte_memcpy(&dst_mbuf, op->m_dst, sizeof(dst_mbuf));
 404         rte_pktmbuf_reset(&dst_mbuf);
 405         dst_mbuf.buf_len = dst_data_size;
 406         dst_mbuf.data_len = dst_data_size;
 407         dst_mbuf.pkt_len = dst_data_size;
 408         dst_mbuf.data_off = 0;
 409
 410         /* update op for the child operations */
 411         op->m_dst = &dst_mbuf;
 412         op->dst.offset = 0;
 413
 414         while (data_to_enqueue) {
 415                 const struct rte_memzone *mz =
 416                         parent_cookie->dst_memzones[num_descriptors_built - 1];
 417                 uint32_t src_data_size = RTE_MIN(data_to_enqueue,
 418                                 QAT_FALLBACK_THLD);
 419                 uint32_t cookie_index;
 420
 421                 /* update params for the next op */
 422                 op->src.offset += QAT_FALLBACK_THLD;
 423                 op->src.length = src_data_size;
 424                 op->flush_flag = (src_data_size == data_to_enqueue) ?
 425                         op_backup.flush_flag : RTE_COMP_FLUSH_FULL;
 426
 427                 /* update dst mbuf for the next op (use memzone for dst data) */
 428                 dst_mbuf.buf_addr = mz->addr;
 429                 dst_mbuf.buf_iova = mz->iova;
 430
 431                 /* move the tail and calculate next cookie index */
 432                 tail = adf_modulo(tail + txq->msg_size, txq->modulo_mask);
 433                 cookie_index = tail / txq->msg_size;
 434                 child_cookie = (struct qat_comp_op_cookie *)
 435                                 qp->op_cookies[cookie_index];
 436                 comp_req = (struct icp_qat_fw_comp_req *)(base_addr + tail);
 437
 438                 /* update child cookie */
 439                 child_cookie->split_op = 1; /* must be set for child as well */
 440                 child_cookie->parent_cookie = parent_cookie; /* same as above */
 441                 child_cookie->nb_children = 0;
 442                 child_cookie->dest_buffer = mz->addr;
 443
 444                 QAT_DP_LOG(DEBUG,
 445                                 "cookie_index %u, child_cookie %p, comp_req %p",
 446                                 cookie_index, child_cookie, comp_req);
 447                 QAT_DP_LOG(DEBUG,
 448                                 "data_to_enqueue %u, num_descriptors_built %d",
 449                                 data_to_enqueue, num_descriptors_built);
 450                 QAT_DP_LOG(DEBUG, "child op src len %u dst len %u",
 451                                 op->src.length, op->m_dst->pkt_len);
 452
 453                 /* build the request */
 454                 ret = qat_comp_build_request(op, (uint8_t *)comp_req,
 455                                 child_cookie, qp->qat_dev_gen);
 456                 if (ret < 0) {
 457                         QAT_DP_LOG(WARNING, "Failed to build child descriptor");
 458                         /* restore op and clear cookie */
 459                         rte_memcpy(op, &op_backup, sizeof(op_backup));
 460                         parent_cookie->split_op = 0;
 461                         parent_cookie->nb_children = 0;
 462                         return ret;
 463                 }
 464
 465                 data_to_enqueue -= src_data_size;
 466                 num_descriptors_built++;
 467         }
 468
 469         /* restore backed up original op */
 470         rte_memcpy(op, &op_backup, sizeof(op_backup));
 471
 472         if (nb_descr != num_descriptors_built)
 473                 QAT_DP_LOG(ERR, "split op. expected %d, built %d",
 474                                 nb_descr, num_descriptors_built);
 475
 476         parent_cookie->nb_children = num_descriptors_built - 1;
 477         return num_descriptors_built;
 478 }
 479
 480 static inline void
 481 qat_comp_response_data_copy(struct qat_comp_op_cookie *cookie,
 482                        struct rte_comp_op *rx_op)
 483 {
 484         struct qat_comp_op_cookie *pc = cookie->parent_cookie;
 485         struct rte_mbuf *sgl_buf = pc->dst_data;
 486         void *op_dst_addr = rte_pktmbuf_mtod_offset(sgl_buf, uint8_t *,
 487                                                     pc->dst_data_offset);
 488
 489         /* number of bytes left in the current segment */
 490         uint32_t left_in_current = rte_pktmbuf_data_len(sgl_buf) -
 491                         pc->dst_data_offset;
 492
 493         uint32_t prod, sent;
 494
 495         if (rx_op->produced <= left_in_current) {
 496                 rte_memcpy(op_dst_addr, cookie->dest_buffer,
 497                                 rx_op->produced);
 498                 /* calculate dst mbuf and offset for the next child op */
 499                 if (rx_op->produced == left_in_current) {
 500                         pc->dst_data = sgl_buf->next;
 501                         pc->dst_data_offset = 0;
 502                 } else
 503                         pc->dst_data_offset += rx_op->produced;
 504         } else {
 505                 rte_memcpy(op_dst_addr, cookie->dest_buffer,
 506                                 left_in_current);
 507                 sgl_buf = sgl_buf->next;
 508                 prod = rx_op->produced - left_in_current;
 509                 sent = left_in_current;
 510                 while (prod > rte_pktmbuf_data_len(sgl_buf)) {
 511                         op_dst_addr = rte_pktmbuf_mtod_offset(sgl_buf,
 512                                         uint8_t *, 0);
 513
 514                         rte_memcpy(op_dst_addr,
 515                                         ((uint8_t *)cookie->dest_buffer) +
 516                                         sent,
 517                                         rte_pktmbuf_data_len(sgl_buf));
 518
 519                         prod -= rte_pktmbuf_data_len(sgl_buf);
 520                         sent += rte_pktmbuf_data_len(sgl_buf);
 521
 522                         sgl_buf = sgl_buf->next;
 523                 }
 524
 525                 op_dst_addr = rte_pktmbuf_mtod_offset(sgl_buf, uint8_t *, 0);
 526
 527                 rte_memcpy(op_dst_addr,
 528                                 ((uint8_t *)cookie->dest_buffer) + sent,
 529                                 prod);
 530
 531                 /* calculate dst mbuf and offset for the next child op */
 532                 if (prod == rte_pktmbuf_data_len(sgl_buf)) {
 533                         pc->dst_data = sgl_buf->next;
 534                         pc->dst_data_offset = 0;
 535                 } else {
 536                         pc->dst_data = sgl_buf;
 537                         pc->dst_data_offset = prod;
 538                 }
 539         }
 540 }
 541
 542 int
 543 qat_comp_process_response(void **op, uint8_t *resp, void *op_cookie,
 544                           uint64_t *dequeue_err_count)
 545 {
 546         struct icp_qat_fw_comp_resp *resp_msg =
 547                         (struct icp_qat_fw_comp_resp *)resp;
 548         struct qat_comp_op_cookie *cookie =
 549                         (struct qat_comp_op_cookie *)op_cookie;
 550
 551         struct icp_qat_fw_resp_comp_pars *comp_resp1 =
 552           (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
 553
 554         QAT_DP_LOG(DEBUG, "input counter = %u, output counter = %u",
 555                    comp_resp1->input_byte_counter,
 556                    comp_resp1->output_byte_counter);
 557
 558         struct rte_comp_op *rx_op = (struct rte_comp_op *)(uintptr_t)
 559                         (resp_msg->opaque_data);
 560         struct qat_comp_stream *stream;
 561         struct qat_comp_xform *qat_xform;
 562         int err = resp_msg->comn_resp.comn_status &
 563                         ((1 << QAT_COMN_RESP_CMP_STATUS_BITPOS) |
 564                          (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS));
 565
 566         if (rx_op->op_type == RTE_COMP_OP_STATEFUL) {
 567                 stream = rx_op->stream;
 568                 qat_xform = &stream->qat_xform;
 569                 /* clear op-in-progress flag */
 570                 stream->op_in_progress = 0;
 571         } else {
 572                 stream = NULL;
 573                 qat_xform = rx_op->private_xform;
 574         }
 575
 576 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 577         QAT_DP_LOG(DEBUG, "Direction: %s",
 578             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS ?
 579             "decompression" : "compression");
 580         QAT_DP_HEXDUMP_LOG(DEBUG,  "qat_response:", (uint8_t *)resp_msg,
 581                         sizeof(struct icp_qat_fw_comp_resp));
 582 #endif
 583
 584         if (unlikely(cookie->error)) {
 585                 rx_op->status = cookie->error;
 586                 cookie->error = 0;
 587                 ++(*dequeue_err_count);
 588                 rx_op->debug_status = 0;
 589                 rx_op->consumed = 0;
 590                 rx_op->produced = 0;
 591                 *op = (void *)rx_op;
 592                 /* also in this case number of returned ops */
 593                 /* must be equal to one, */
 594                 /* appropriate status (error) must be set as well */
 595                 return 1;
 596         }
 597
 598         if (likely(qat_xform->qat_comp_request_type
 599                         != QAT_COMP_REQUEST_DECOMPRESS)) {
 600                 if (unlikely(ICP_QAT_FW_COMN_HDR_CNV_FLAG_GET(
 601                                 resp_msg->comn_resp.hdr_flags)
 602                                         == ICP_QAT_FW_COMP_NO_CNV)) {
 603                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 604                         rx_op->debug_status = ERR_CODE_QAT_COMP_WRONG_FW;
 605                         *op = (void *)rx_op;
 606                         QAT_DP_LOG(ERR,
 607                                         "This QAT hardware doesn't support compression operation");
 608                         ++(*dequeue_err_count);
 609                         return 1;
 610                 }
 611         }
 612
 613         if (err) {
 614                 if (unlikely((err & (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS))
 615                              && (qat_xform->qat_comp_request_type
 616                                  == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS))) {
 617                         QAT_DP_LOG(ERR, "QAT intermediate buffer may be too "
 618                             "small for output, try configuring a larger size");
 619                 }
 620
 621                 int8_t cmp_err_code =
 622                         (int8_t)resp_msg->comn_resp.comn_error.cmp_err_code;
 623                 int8_t xlat_err_code =
 624                         (int8_t)resp_msg->comn_resp.comn_error.xlat_err_code;
 625
 626                 /* handle recoverable out-of-buffer condition in stateful
 627                  * decompression scenario
 628                  */
 629                 if (cmp_err_code == ERR_CODE_OVERFLOW_ERROR && !xlat_err_code
 630                                 && qat_xform->qat_comp_request_type
 631                                         == QAT_COMP_REQUEST_DECOMPRESS
 632                                 && rx_op->op_type == RTE_COMP_OP_STATEFUL) {
 633                         struct icp_qat_fw_resp_comp_pars *comp_resp =
 634                                         &resp_msg->comp_resp_pars;
 635                         rx_op->status =
 636                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
 637                         rx_op->consumed = comp_resp->input_byte_counter;
 638                         rx_op->produced = comp_resp->output_byte_counter;
 639                         stream->start_of_packet = 0;
 640                 } else if ((cmp_err_code == ERR_CODE_OVERFLOW_ERROR
 641                           && !xlat_err_code)
 642                                 ||
 643                     (!cmp_err_code && xlat_err_code == ERR_CODE_OVERFLOW_ERROR)
 644                                 ||
 645                     (cmp_err_code == ERR_CODE_OVERFLOW_ERROR &&
 646                      xlat_err_code == ERR_CODE_OVERFLOW_ERROR)){
 647
 648                         struct icp_qat_fw_resp_comp_pars *comp_resp =
 649                                         (struct icp_qat_fw_resp_comp_pars *)
 650                                         &resp_msg->comp_resp_pars;
 651
 652                         /* handle recoverable out-of-buffer condition
 653                          * in stateless compression scenario
 654                          */
 655                         if (comp_resp->input_byte_counter) {
 656                                 if ((qat_xform->qat_comp_request_type
 657                                 == QAT_COMP_REQUEST_FIXED_COMP_STATELESS) ||
 658                                     (qat_xform->qat_comp_request_type
 659                                 == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)) {
 660
 661                                         rx_op->status =
 662                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
 663                                         rx_op->consumed =
 664                                                 comp_resp->input_byte_counter;
 665                                         rx_op->produced =
 666                                                 comp_resp->output_byte_counter;
 667                                 } else
 668                                         rx_op->status =
 669                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 670                         } else
 671                                 rx_op->status =
 672                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
 673                 } else
 674                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 675
 676                 ++(*dequeue_err_count);
 677                 rx_op->debug_status =
 678                         *((uint16_t *)(&resp_msg->comn_resp.comn_error));
 679         } else {
 680                 struct icp_qat_fw_resp_comp_pars *comp_resp =
 681                   (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
 682
 683                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 684                 rx_op->consumed = comp_resp->input_byte_counter;
 685                 rx_op->produced = comp_resp->output_byte_counter;
 686                 if (stream)
 687                         stream->start_of_packet = 0;
 688
 689                 if (qat_xform->checksum_type != RTE_COMP_CHECKSUM_NONE) {
 690                         if (qat_xform->checksum_type == RTE_COMP_CHECKSUM_CRC32)
 691                                 rx_op->output_chksum = comp_resp->curr_crc32;
 692                         else if (qat_xform->checksum_type ==
 693                                         RTE_COMP_CHECKSUM_ADLER32)
 694                                 rx_op->output_chksum = comp_resp->curr_adler_32;
 695                         else
 696                                 rx_op->output_chksum = comp_resp->curr_chksum;
 697                 }
 698         }
 699         QAT_DP_LOG(DEBUG, "About to check for split op :cookies: %p %p, split:%u",
 700                 cookie, cookie->parent_cookie, cookie->split_op);
 701
 702         if (cookie->split_op) {
 703                 *op = NULL;
 704                 struct qat_comp_op_cookie *pc = cookie->parent_cookie;
 705
 706                 if (cookie->nb_children > 0) {
 707                         QAT_DP_LOG(DEBUG, "Parent");
 708                         /* parent - don't return until all children
 709                          * responses are collected
 710                          */
 711                         cookie->total_consumed = rx_op->consumed;
 712                         cookie->total_produced = rx_op->produced;
 713                         if (err) {
 714                                 cookie->error = rx_op->status;
 715                                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 716                         } else {
 717                                 /* calculate dst mbuf and offset for child op */
 718                                 qat_comp_mbuf_skip(&cookie->dst_data,
 719                                                 &cookie->dst_data_offset,
 720                                                 rx_op->produced);
 721                         }
 722                 } else {
 723                         QAT_DP_LOG(DEBUG, "Child");
 724                         if (pc->error == RTE_COMP_OP_STATUS_SUCCESS) {
 725                                 if (err)
 726                                         pc->error = rx_op->status;
 727                                 if (rx_op->produced) {
 728                                         /* this covers both SUCCESS and
 729                                          * OUT_OF_SPACE_RECOVERABLE cases
 730                                          */
 731                                         qat_comp_response_data_copy(cookie,
 732                                                         rx_op);
 733                                         pc->total_consumed += rx_op->consumed;
 734                                         pc->total_produced += rx_op->produced;
 735                                 }
 736                         }
 737                         rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
 738
 739                         pc->nb_child_responses++;
 740
 741                         /* (child) cookie fields have to be reset
 742                          * to avoid problems with reusability -
 743                          * rx and tx queue starting from index zero
 744                          */
 745                         cookie->nb_children = 0;
 746                         cookie->split_op = 0;
 747                         cookie->nb_child_responses = 0;
 748                         cookie->dest_buffer = NULL;
 749
 750                         if (pc->nb_child_responses == pc->nb_children) {
 751                                 uint8_t child_resp;
 752
 753                                 /* parent should be included as well */
 754                                 child_resp = pc->nb_child_responses + 1;
 755
 756                                 rx_op->status = pc->error;
 757                                 rx_op->consumed = pc->total_consumed;
 758                                 rx_op->produced = pc->total_produced;
 759                                 *op = (void *)rx_op;
 760
 761                                 /* free memzones used for dst data */
 762                                 qat_comp_free_split_op_memzones(pc,
 763                                                 pc->nb_children);
 764
 765                                 /* (parent) cookie fields have to be reset
 766                                  * to avoid problems with reusability -
 767                                  * rx and tx queue starting from index zero
 768                                  */
 769                                 pc->nb_children = 0;
 770                                 pc->split_op = 0;
 771                                 pc->nb_child_responses = 0;
 772                                 pc->error = RTE_COMP_OP_STATUS_SUCCESS;
 773
 774                                 return child_resp;
 775                         }
 776                 }
 777                 return 0;
 778         }
 779
 780         *op = (void *)rx_op;
 781         return 1;
 782 }
 783
 784 unsigned int
 785 qat_comp_xform_size(void)
 786 {
 787         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_xform), 8);
 788 }
 789
 790 unsigned int
 791 qat_comp_stream_size(void)
 792 {
 793         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_stream), 8);
 794 }
 795
 796 static void qat_comp_create_req_hdr(struct icp_qat_fw_comn_req_hdr *header,
 797                                     enum qat_comp_request_type request)
 798 {
 799         if (request == QAT_COMP_REQUEST_FIXED_COMP_STATELESS)
 800                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_STATIC;
 801         else if (request == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)
 802                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DYNAMIC;
 803         else if (request == QAT_COMP_REQUEST_DECOMPRESS)
 804                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DECOMPRESS;
 805
 806         header->service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_COMP;
 807         header->hdr_flags =
 808             ICP_QAT_FW_COMN_HDR_FLAGS_BUILD(ICP_QAT_FW_COMN_REQ_FLAG_SET);
 809
 810         header->comn_req_flags = ICP_QAT_FW_COMN_FLAGS_BUILD(
 811             QAT_COMN_CD_FLD_TYPE_16BYTE_DATA, QAT_COMN_PTR_TYPE_FLAT);
 812 }
 813
 814 static int qat_comp_create_templates(struct qat_comp_xform *qat_xform,
 815                         const struct rte_memzone *interm_buff_mz,
 816                         const struct rte_comp_xform *xform,
 817                         const struct qat_comp_stream *stream,
 818                         enum rte_comp_op_type op_type)
 819 {
 820         struct icp_qat_fw_comp_req *comp_req;
 821         int comp_level, algo;
 822         uint32_t req_par_flags;
 823         int direction = ICP_QAT_HW_COMPRESSION_DIR_COMPRESS;
 824
 825         if (unlikely(qat_xform == NULL)) {
 826                 QAT_LOG(ERR, "Session was not created for this device");
 827                 return -EINVAL;
 828         }
 829
 830         if (op_type == RTE_COMP_OP_STATEFUL) {
 831                 if (unlikely(stream == NULL)) {
 832                         QAT_LOG(ERR, "Stream must be non null for stateful op");
 833                         return -EINVAL;
 834                 }
 835                 if (unlikely(qat_xform->qat_comp_request_type !=
 836                              QAT_COMP_REQUEST_DECOMPRESS)) {
 837                         QAT_LOG(ERR, "QAT PMD does not support stateful compression");
 838                         return -ENOTSUP;
 839                 }
 840         }
 841
 842         if (qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
 843                 direction = ICP_QAT_HW_COMPRESSION_DIR_DECOMPRESS;
 844                 comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
 845                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 846                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 847                                 ICP_QAT_FW_COMP_BFINAL,
 848                                 ICP_QAT_FW_COMP_CNV,
 849                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 850         } else {
 851                 if (xform->compress.level == RTE_COMP_LEVEL_PMD_DEFAULT)
 852                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
 853                 else if (xform->compress.level == 1)
 854                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
 855                 else if (xform->compress.level == 2)
 856                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_4;
 857                 else if (xform->compress.level == 3)
 858                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
 859                 else if (xform->compress.level >= 4 &&
 860                          xform->compress.level <= 9)
 861                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_16;
 862                 else {
 863                         QAT_LOG(ERR, "compression level not supported");
 864                         return -EINVAL;
 865                 }
 866                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
 867                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
 868                                 ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_CNV,
 869                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
 870         }
 871
 872         switch (xform->compress.algo) {
 873         case RTE_COMP_ALGO_DEFLATE:
 874                 algo = ICP_QAT_HW_COMPRESSION_ALGO_DEFLATE;
 875                 break;
 876         case RTE_COMP_ALGO_LZS:
 877         default:
 878                 /* RTE_COMP_NULL */
 879                 QAT_LOG(ERR, "compression algorithm not supported");
 880                 return -EINVAL;
 881         }
 882
 883         comp_req = &qat_xform->qat_comp_req_tmpl;
 884
 885         /* Initialize header */
 886         qat_comp_create_req_hdr(&comp_req->comn_hdr,
 887                                         qat_xform->qat_comp_request_type);
 888
 889         if (op_type == RTE_COMP_OP_STATEFUL) {
 890                 comp_req->comn_hdr.serv_specif_flags =
 891                                 ICP_QAT_FW_COMP_FLAGS_BUILD(
 892                         ICP_QAT_FW_COMP_STATEFUL_SESSION,
 893                         ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
 894                         ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
 895                         ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
 896                         ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
 897
 898                 /* Decompression state registers */
 899                 comp_req->comp_cd_ctrl.comp_state_addr =
 900                                 stream->state_registers_decomp_phys;
 901
 902                 /* Enable A, B, C, D, and E (CAMs). */
 903                 comp_req->comp_cd_ctrl.ram_bank_flags =
 904                         ICP_QAT_FW_COMP_RAM_FLAGS_BUILD(
 905                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank I */
 906                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank H */
 907                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank G */
 908                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank F */
 909                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank E */
 910                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank D */
 911                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank C */
 912                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank B */
 913                                 ICP_QAT_FW_COMP_BANK_ENABLED); /* Bank A */
 914
 915                 comp_req->comp_cd_ctrl.ram_banks_addr =
 916                                 stream->inflate_context_phys;
 917         } else {
 918                 comp_req->comn_hdr.serv_specif_flags =
 919                                 ICP_QAT_FW_COMP_FLAGS_BUILD(
 920                         ICP_QAT_FW_COMP_STATELESS_SESSION,
 921                         ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
 922                         ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
 923                         ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
 924                         ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
 925         }
 926
 927         comp_req->cd_pars.sl.comp_slice_cfg_word[0] =
 928             ICP_QAT_HW_COMPRESSION_CONFIG_BUILD(
 929                 direction,
 930                 /* In CPM 1.6 only valid mode ! */
 931                 ICP_QAT_HW_COMPRESSION_DELAYED_MATCH_ENABLED, algo,
 932                 /* Translate level to depth */
 933                 comp_level, ICP_QAT_HW_COMPRESSION_FILE_TYPE_0);
 934
 935         comp_req->comp_pars.initial_adler = 1;
 936         comp_req->comp_pars.initial_crc32 = 0;
 937         comp_req->comp_pars.req_par_flags = req_par_flags;
 938
 939
 940         if (qat_xform->qat_comp_request_type ==
 941                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS ||
 942             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
 943                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 944                                             ICP_QAT_FW_SLICE_DRAM_WR);
 945                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 946                                             ICP_QAT_FW_SLICE_COMP);
 947         } else if (qat_xform->qat_comp_request_type ==
 948                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS) {
 949
 950                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
 951                                 ICP_QAT_FW_SLICE_XLAT);
 952                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
 953                                 ICP_QAT_FW_SLICE_COMP);
 954
 955                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 956                                 ICP_QAT_FW_SLICE_DRAM_WR);
 957                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->u2.xlt_cd_ctrl,
 958                                 ICP_QAT_FW_SLICE_XLAT);
 959
 960                 comp_req->u1.xlt_pars.inter_buff_ptr =
 961                                 interm_buff_mz->iova;
 962         }
 963
 964 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 965         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message template:", comp_req,
 966                     sizeof(struct icp_qat_fw_comp_req));
 967 #endif
 968         return 0;
 969 }
 970
 971 /**
 972  * Create driver private_xform data.
 973  *
 974  * @param dev
 975  *   Compressdev device
 976  * @param xform
 977  *   xform data from application
 978  * @param private_xform
 979  *   ptr where handle of pmd's private_xform data should be stored
 980  * @return
 981  *  - if successful returns 0
 982  *    and valid private_xform handle
 983  *  - <0 in error cases
 984  *  - Returns -EINVAL if input parameters are invalid.
 985  *  - Returns -ENOTSUP if comp device does not support the comp transform.
 986  *  - Returns -ENOMEM if the private_xform could not be allocated.
 987  */
 988 int
 989 qat_comp_private_xform_create(struct rte_compressdev *dev,
 990                               const struct rte_comp_xform *xform,
 991                               void **private_xform)
 992 {
 993         struct qat_comp_dev_private *qat = dev->data->dev_private;
 994
 995         if (unlikely(private_xform == NULL)) {
 996                 QAT_LOG(ERR, "QAT: private_xform parameter is NULL");
 997                 return -EINVAL;
 998         }
 999         if (unlikely(qat->xformpool == NULL)) {
1000                 QAT_LOG(ERR, "QAT device has no private_xform mempool");
1001                 return -ENOMEM;
1002         }
1003         if (rte_mempool_get(qat->xformpool, private_xform)) {
1004                 QAT_LOG(ERR, "Couldn't get object from qat xform mempool");
1005                 return -ENOMEM;
1006         }
1007
1008         struct qat_comp_xform *qat_xform =
1009                         (struct qat_comp_xform *)*private_xform;
1010
1011         if (xform->type == RTE_COMP_COMPRESS) {
1012
1013                 if (xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED ||
1014                   ((xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_DEFAULT)
1015                                    && qat->interm_buff_mz == NULL))
1016                         qat_xform->qat_comp_request_type =
1017                                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS;
1018
1019                 else if ((xform->compress.deflate.huffman ==
1020                                 RTE_COMP_HUFFMAN_DYNAMIC ||
1021                                 xform->compress.deflate.huffman ==
1022                                                 RTE_COMP_HUFFMAN_DEFAULT) &&
1023                                 qat->interm_buff_mz != NULL)
1024
1025                         qat_xform->qat_comp_request_type =
1026                                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS;
1027
1028                 else {
1029                         QAT_LOG(ERR,
1030                                         "IM buffers needed for dynamic deflate. Set size in config file");
1031                         return -EINVAL;
1032                 }
1033
1034                 qat_xform->checksum_type = xform->compress.chksum;
1035
1036         } else {
1037                 qat_xform->qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
1038                 qat_xform->checksum_type = xform->decompress.chksum;
1039         }
1040
1041         if (qat_comp_create_templates(qat_xform, qat->interm_buff_mz, xform,
1042                                       NULL, RTE_COMP_OP_STATELESS)) {
1043                 QAT_LOG(ERR, "QAT: Problem with setting compression");
1044                 return -EINVAL;
1045         }
1046         return 0;
1047 }
1048
1049 /**
1050  * Free driver private_xform data.
1051  *
1052  * @param dev
1053  *   Compressdev device
1054  * @param private_xform
1055  *   handle of pmd's private_xform data
1056  * @return
1057  *  - 0 if successful
1058  *  - <0 in error cases
1059  *  - Returns -EINVAL if input parameters are invalid.
1060  */
1061 int
1062 qat_comp_private_xform_free(struct rte_compressdev *dev __rte_unused,
1063                             void *private_xform)
1064 {
1065         struct qat_comp_xform *qat_xform =
1066                         (struct qat_comp_xform *)private_xform;
1067
1068         if (qat_xform) {
1069                 memset(qat_xform, 0, qat_comp_xform_size());
1070                 struct rte_mempool *mp = rte_mempool_from_obj(qat_xform);
1071
1072                 rte_mempool_put(mp, qat_xform);
1073                 return 0;
1074         }
1075         return -EINVAL;
1076 }
1077
1078 /**
1079  * Reset stream state for the next use.
1080  *
1081  * @param stream
1082  *   handle of pmd's private stream data
1083  */
1084 static void
1085 qat_comp_stream_reset(struct qat_comp_stream *stream)
1086 {
1087         if (stream) {
1088                 memset(&stream->qat_xform, 0, sizeof(struct qat_comp_xform));
1089                 stream->start_of_packet = 1;
1090                 stream->op_in_progress = 0;
1091         }
1092 }
1093
1094 /**
1095  * Create driver private stream data.
1096  *
1097  * @param dev
1098  *   Compressdev device
1099  * @param xform
1100  *   xform data
1101  * @param stream
1102  *   ptr where handle of pmd's private stream data should be stored
1103  * @return
1104  *  - Returns 0 if private stream structure has been created successfully.
1105  *  - Returns -EINVAL if input parameters are invalid.
1106  *  - Returns -ENOTSUP if comp device does not support STATEFUL operations.
1107  *  - Returns -ENOTSUP if comp device does not support the comp transform.
1108  *  - Returns -ENOMEM if the private stream could not be allocated.
1109  */
1110 int
1111 qat_comp_stream_create(struct rte_compressdev *dev,
1112                        const struct rte_comp_xform *xform,
1113                        void **stream)
1114 {
1115         struct qat_comp_dev_private *qat = dev->data->dev_private;
1116         struct qat_comp_stream *ptr;
1117
1118         if (unlikely(stream == NULL)) {
1119                 QAT_LOG(ERR, "QAT: stream parameter is NULL");
1120                 return -EINVAL;
1121         }
1122         if (unlikely(xform->type == RTE_COMP_COMPRESS)) {
1123                 QAT_LOG(ERR, "QAT: stateful compression not supported");
1124                 return -ENOTSUP;
1125         }
1126         if (unlikely(qat->streampool == NULL)) {
1127                 QAT_LOG(ERR, "QAT device has no stream mempool");
1128                 return -ENOMEM;
1129         }
1130         if (rte_mempool_get(qat->streampool, stream)) {
1131                 QAT_LOG(ERR, "Couldn't get object from qat stream mempool");
1132                 return -ENOMEM;
1133         }
1134
1135         ptr = (struct qat_comp_stream *) *stream;
1136         qat_comp_stream_reset(ptr);
1137         ptr->qat_xform.qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
1138         ptr->qat_xform.checksum_type = xform->decompress.chksum;
1139
1140         if (qat_comp_create_templates(&ptr->qat_xform, qat->interm_buff_mz,
1141                                       xform, ptr, RTE_COMP_OP_STATEFUL)) {
1142                 QAT_LOG(ERR, "QAT: problem with creating descriptor template for stream");
1143                 rte_mempool_put(qat->streampool, *stream);
1144                 *stream = NULL;
1145                 return -EINVAL;
1146         }
1147
1148         return 0;
1149 }
1150
1151 /**
1152  * Free driver private stream data.
1153  *
1154  * @param dev
1155  *   Compressdev device
1156  * @param stream
1157  *   handle of pmd's private stream data
1158  * @return
1159  *  - 0 if successful
1160  *  - <0 in error cases
1161  *  - Returns -EINVAL if input parameters are invalid.
1162  *  - Returns -ENOTSUP if comp device does not support STATEFUL operations.
1163  *  - Returns -EBUSY if can't free stream as there are inflight operations
1164  */
1165 int
1166 qat_comp_stream_free(struct rte_compressdev *dev, void *stream)
1167 {
1168         if (stream) {
1169                 struct qat_comp_dev_private *qat = dev->data->dev_private;
1170                 qat_comp_stream_reset((struct qat_comp_stream *) stream);
1171                 rte_mempool_put(qat->streampool, stream);
1172                 return 0;
1173         }
1174         return -EINVAL;
1175 }