doc: add sample for ABI checks
[dpdk.git] / 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_NO_CNV,
195                                 ICP_QAT_FW_COMP_NO_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, "QAT has wrong firmware");
607                         ++(*dequeue_err_count);
608                         return 1;
609                 }
610         }
611
612         if (err) {
613                 if (unlikely((err & (1 << QAT_COMN_RESP_XLAT_STATUS_BITPOS))
614                              && (qat_xform->qat_comp_request_type
615                                  == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS))) {
616                         QAT_DP_LOG(ERR, "QAT intermediate buffer may be too "
617                             "small for output, try configuring a larger size");
618                 }
619
620                 int8_t cmp_err_code =
621                         (int8_t)resp_msg->comn_resp.comn_error.cmp_err_code;
622                 int8_t xlat_err_code =
623                         (int8_t)resp_msg->comn_resp.comn_error.xlat_err_code;
624
625                 /* handle recoverable out-of-buffer condition in stateful
626                  * decompression scenario
627                  */
628                 if (cmp_err_code == ERR_CODE_OVERFLOW_ERROR && !xlat_err_code
629                                 && qat_xform->qat_comp_request_type
630                                         == QAT_COMP_REQUEST_DECOMPRESS
631                                 && rx_op->op_type == RTE_COMP_OP_STATEFUL) {
632                         struct icp_qat_fw_resp_comp_pars *comp_resp =
633                                         &resp_msg->comp_resp_pars;
634                         rx_op->status =
635                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
636                         rx_op->consumed = comp_resp->input_byte_counter;
637                         rx_op->produced = comp_resp->output_byte_counter;
638                         stream->start_of_packet = 0;
639                 } else if ((cmp_err_code == ERR_CODE_OVERFLOW_ERROR
640                           && !xlat_err_code)
641                                 ||
642                     (!cmp_err_code && xlat_err_code == ERR_CODE_OVERFLOW_ERROR)
643                                 ||
644                     (cmp_err_code == ERR_CODE_OVERFLOW_ERROR &&
645                      xlat_err_code == ERR_CODE_OVERFLOW_ERROR)){
646
647                         struct icp_qat_fw_resp_comp_pars *comp_resp =
648                                         (struct icp_qat_fw_resp_comp_pars *)
649                                         &resp_msg->comp_resp_pars;
650
651                         /* handle recoverable out-of-buffer condition
652                          * in stateless compression scenario
653                          */
654                         if (comp_resp->input_byte_counter) {
655                                 if ((qat_xform->qat_comp_request_type
656                                 == QAT_COMP_REQUEST_FIXED_COMP_STATELESS) ||
657                                     (qat_xform->qat_comp_request_type
658                                 == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)) {
659
660                                         rx_op->status =
661                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
662                                         rx_op->consumed =
663                                                 comp_resp->input_byte_counter;
664                                         rx_op->produced =
665                                                 comp_resp->output_byte_counter;
666                                 } else
667                                         rx_op->status =
668                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
669                         } else
670                                 rx_op->status =
671                                 RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
672                 } else
673                         rx_op->status = RTE_COMP_OP_STATUS_ERROR;
674
675                 ++(*dequeue_err_count);
676                 rx_op->debug_status =
677                         *((uint16_t *)(&resp_msg->comn_resp.comn_error));
678         } else {
679                 struct icp_qat_fw_resp_comp_pars *comp_resp =
680                   (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
681
682                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
683                 rx_op->consumed = comp_resp->input_byte_counter;
684                 rx_op->produced = comp_resp->output_byte_counter;
685                 if (stream)
686                         stream->start_of_packet = 0;
687
688                 if (qat_xform->checksum_type != RTE_COMP_CHECKSUM_NONE) {
689                         if (qat_xform->checksum_type == RTE_COMP_CHECKSUM_CRC32)
690                                 rx_op->output_chksum = comp_resp->curr_crc32;
691                         else if (qat_xform->checksum_type ==
692                                         RTE_COMP_CHECKSUM_ADLER32)
693                                 rx_op->output_chksum = comp_resp->curr_adler_32;
694                         else
695                                 rx_op->output_chksum = comp_resp->curr_chksum;
696                 }
697         }
698         QAT_DP_LOG(DEBUG, "About to check for split op :cookies: %p %p, split:%u",
699                 cookie, cookie->parent_cookie, cookie->split_op);
700
701         if (cookie->split_op) {
702                 *op = NULL;
703                 struct qat_comp_op_cookie *pc = cookie->parent_cookie;
704
705                 if (cookie->nb_children > 0) {
706                         QAT_DP_LOG(DEBUG, "Parent");
707                         /* parent - don't return until all children
708                          * responses are collected
709                          */
710                         cookie->total_consumed = rx_op->consumed;
711                         cookie->total_produced = rx_op->produced;
712                         if (err) {
713                                 cookie->error = rx_op->status;
714                                 rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
715                         } else {
716                                 /* calculate dst mbuf and offset for child op */
717                                 qat_comp_mbuf_skip(&cookie->dst_data,
718                                                 &cookie->dst_data_offset,
719                                                 rx_op->produced);
720                         }
721                 } else {
722                         QAT_DP_LOG(DEBUG, "Child");
723                         if (pc->error == RTE_COMP_OP_STATUS_SUCCESS) {
724                                 if (err)
725                                         pc->error = rx_op->status;
726                                 if (rx_op->produced) {
727                                         /* this covers both SUCCESS and
728                                          * OUT_OF_SPACE_RECOVERABLE cases
729                                          */
730                                         qat_comp_response_data_copy(cookie,
731                                                         rx_op);
732                                         pc->total_consumed += rx_op->consumed;
733                                         pc->total_produced += rx_op->produced;
734                                 }
735                         }
736                         rx_op->status = RTE_COMP_OP_STATUS_SUCCESS;
737
738                         pc->nb_child_responses++;
739
740                         /* (child) cookie fields have to be reset
741                          * to avoid problems with reusability -
742                          * rx and tx queue starting from index zero
743                          */
744                         cookie->nb_children = 0;
745                         cookie->split_op = 0;
746                         cookie->nb_child_responses = 0;
747                         cookie->dest_buffer = NULL;
748
749                         if (pc->nb_child_responses == pc->nb_children) {
750                                 uint8_t child_resp;
751
752                                 /* parent should be included as well */
753                                 child_resp = pc->nb_child_responses + 1;
754
755                                 rx_op->status = pc->error;
756                                 rx_op->consumed = pc->total_consumed;
757                                 rx_op->produced = pc->total_produced;
758                                 *op = (void *)rx_op;
759
760                                 /* free memzones used for dst data */
761                                 qat_comp_free_split_op_memzones(pc,
762                                                 pc->nb_children);
763
764                                 /* (parent) cookie fields have to be reset
765                                  * to avoid problems with reusability -
766                                  * rx and tx queue starting from index zero
767                                  */
768                                 pc->nb_children = 0;
769                                 pc->split_op = 0;
770                                 pc->nb_child_responses = 0;
771                                 pc->error = RTE_COMP_OP_STATUS_SUCCESS;
772
773                                 return child_resp;
774                         }
775                 }
776                 return 0;
777         }
778
779         *op = (void *)rx_op;
780         return 1;
781 }
782
783 unsigned int
784 qat_comp_xform_size(void)
785 {
786         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_xform), 8);
787 }
788
789 unsigned int
790 qat_comp_stream_size(void)
791 {
792         return RTE_ALIGN_CEIL(sizeof(struct qat_comp_stream), 8);
793 }
794
795 static void qat_comp_create_req_hdr(struct icp_qat_fw_comn_req_hdr *header,
796                                     enum qat_comp_request_type request)
797 {
798         if (request == QAT_COMP_REQUEST_FIXED_COMP_STATELESS)
799                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_STATIC;
800         else if (request == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)
801                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DYNAMIC;
802         else if (request == QAT_COMP_REQUEST_DECOMPRESS)
803                 header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DECOMPRESS;
804
805         header->service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_COMP;
806         header->hdr_flags =
807             ICP_QAT_FW_COMN_HDR_FLAGS_BUILD(ICP_QAT_FW_COMN_REQ_FLAG_SET);
808
809         header->comn_req_flags = ICP_QAT_FW_COMN_FLAGS_BUILD(
810             QAT_COMN_CD_FLD_TYPE_16BYTE_DATA, QAT_COMN_PTR_TYPE_FLAT);
811 }
812
813 static int qat_comp_create_templates(struct qat_comp_xform *qat_xform,
814                         const struct rte_memzone *interm_buff_mz,
815                         const struct rte_comp_xform *xform,
816                         const struct qat_comp_stream *stream,
817                         enum rte_comp_op_type op_type)
818 {
819         struct icp_qat_fw_comp_req *comp_req;
820         int comp_level, algo;
821         uint32_t req_par_flags;
822         int direction = ICP_QAT_HW_COMPRESSION_DIR_COMPRESS;
823
824         if (unlikely(qat_xform == NULL)) {
825                 QAT_LOG(ERR, "Session was not created for this device");
826                 return -EINVAL;
827         }
828
829         if (op_type == RTE_COMP_OP_STATEFUL) {
830                 if (unlikely(stream == NULL)) {
831                         QAT_LOG(ERR, "Stream must be non null for stateful op");
832                         return -EINVAL;
833                 }
834                 if (unlikely(qat_xform->qat_comp_request_type !=
835                              QAT_COMP_REQUEST_DECOMPRESS)) {
836                         QAT_LOG(ERR, "QAT PMD does not support stateful compression");
837                         return -ENOTSUP;
838                 }
839         }
840
841         if (qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
842                 direction = ICP_QAT_HW_COMPRESSION_DIR_DECOMPRESS;
843                 comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
844                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
845                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
846                                 ICP_QAT_FW_COMP_BFINAL,
847                                 ICP_QAT_FW_COMP_CNV,
848                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
849         } else {
850                 if (xform->compress.level == RTE_COMP_LEVEL_PMD_DEFAULT)
851                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
852                 else if (xform->compress.level == 1)
853                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
854                 else if (xform->compress.level == 2)
855                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_4;
856                 else if (xform->compress.level == 3)
857                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
858                 else if (xform->compress.level >= 4 &&
859                          xform->compress.level <= 9)
860                         comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_16;
861                 else {
862                         QAT_LOG(ERR, "compression level not supported");
863                         return -EINVAL;
864                 }
865                 req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
866                                 ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
867                                 ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_CNV,
868                                 ICP_QAT_FW_COMP_CNV_RECOVERY);
869         }
870
871         switch (xform->compress.algo) {
872         case RTE_COMP_ALGO_DEFLATE:
873                 algo = ICP_QAT_HW_COMPRESSION_ALGO_DEFLATE;
874                 break;
875         case RTE_COMP_ALGO_LZS:
876         default:
877                 /* RTE_COMP_NULL */
878                 QAT_LOG(ERR, "compression algorithm not supported");
879                 return -EINVAL;
880         }
881
882         comp_req = &qat_xform->qat_comp_req_tmpl;
883
884         /* Initialize header */
885         qat_comp_create_req_hdr(&comp_req->comn_hdr,
886                                         qat_xform->qat_comp_request_type);
887
888         if (op_type == RTE_COMP_OP_STATEFUL) {
889                 comp_req->comn_hdr.serv_specif_flags =
890                                 ICP_QAT_FW_COMP_FLAGS_BUILD(
891                         ICP_QAT_FW_COMP_STATEFUL_SESSION,
892                         ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
893                         ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
894                         ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
895                         ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
896
897                 /* Decompression state registers */
898                 comp_req->comp_cd_ctrl.comp_state_addr =
899                                 stream->state_registers_decomp_phys;
900
901                 /* Enable A, B, C, D, and E (CAMs). */
902                 comp_req->comp_cd_ctrl.ram_bank_flags =
903                         ICP_QAT_FW_COMP_RAM_FLAGS_BUILD(
904                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank I */
905                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank H */
906                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank G */
907                                 ICP_QAT_FW_COMP_BANK_DISABLED, /* Bank F */
908                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank E */
909                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank D */
910                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank C */
911                                 ICP_QAT_FW_COMP_BANK_ENABLED,  /* Bank B */
912                                 ICP_QAT_FW_COMP_BANK_ENABLED); /* Bank A */
913
914                 comp_req->comp_cd_ctrl.ram_banks_addr =
915                                 stream->inflate_context_phys;
916         } else {
917                 comp_req->comn_hdr.serv_specif_flags =
918                                 ICP_QAT_FW_COMP_FLAGS_BUILD(
919                         ICP_QAT_FW_COMP_STATELESS_SESSION,
920                         ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
921                         ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
922                         ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
923                         ICP_QAT_FW_COMP_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
924         }
925
926         comp_req->cd_pars.sl.comp_slice_cfg_word[0] =
927             ICP_QAT_HW_COMPRESSION_CONFIG_BUILD(
928                 direction,
929                 /* In CPM 1.6 only valid mode ! */
930                 ICP_QAT_HW_COMPRESSION_DELAYED_MATCH_ENABLED, algo,
931                 /* Translate level to depth */
932                 comp_level, ICP_QAT_HW_COMPRESSION_FILE_TYPE_0);
933
934         comp_req->comp_pars.initial_adler = 1;
935         comp_req->comp_pars.initial_crc32 = 0;
936         comp_req->comp_pars.req_par_flags = req_par_flags;
937
938
939         if (qat_xform->qat_comp_request_type ==
940                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS ||
941             qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
942                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
943                                             ICP_QAT_FW_SLICE_DRAM_WR);
944                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
945                                             ICP_QAT_FW_SLICE_COMP);
946         } else if (qat_xform->qat_comp_request_type ==
947                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS) {
948
949                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
950                                 ICP_QAT_FW_SLICE_XLAT);
951                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
952                                 ICP_QAT_FW_SLICE_COMP);
953
954                 ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->u2.xlt_cd_ctrl,
955                                 ICP_QAT_FW_SLICE_DRAM_WR);
956                 ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->u2.xlt_cd_ctrl,
957                                 ICP_QAT_FW_SLICE_XLAT);
958
959                 comp_req->u1.xlt_pars.inter_buff_ptr =
960                                 interm_buff_mz->iova;
961         }
962
963 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
964         QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message template:", comp_req,
965                     sizeof(struct icp_qat_fw_comp_req));
966 #endif
967         return 0;
968 }
969
970 /**
971  * Create driver private_xform data.
972  *
973  * @param dev
974  *   Compressdev device
975  * @param xform
976  *   xform data from application
977  * @param private_xform
978  *   ptr where handle of pmd's private_xform data should be stored
979  * @return
980  *  - if successful returns 0
981  *    and valid private_xform handle
982  *  - <0 in error cases
983  *  - Returns -EINVAL if input parameters are invalid.
984  *  - Returns -ENOTSUP if comp device does not support the comp transform.
985  *  - Returns -ENOMEM if the private_xform could not be allocated.
986  */
987 int
988 qat_comp_private_xform_create(struct rte_compressdev *dev,
989                               const struct rte_comp_xform *xform,
990                               void **private_xform)
991 {
992         struct qat_comp_dev_private *qat = dev->data->dev_private;
993
994         if (unlikely(private_xform == NULL)) {
995                 QAT_LOG(ERR, "QAT: private_xform parameter is NULL");
996                 return -EINVAL;
997         }
998         if (unlikely(qat->xformpool == NULL)) {
999                 QAT_LOG(ERR, "QAT device has no private_xform mempool");
1000                 return -ENOMEM;
1001         }
1002         if (rte_mempool_get(qat->xformpool, private_xform)) {
1003                 QAT_LOG(ERR, "Couldn't get object from qat xform mempool");
1004                 return -ENOMEM;
1005         }
1006
1007         struct qat_comp_xform *qat_xform =
1008                         (struct qat_comp_xform *)*private_xform;
1009
1010         if (xform->type == RTE_COMP_COMPRESS) {
1011
1012                 if (xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED ||
1013                   ((xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_DEFAULT)
1014                                    && qat->interm_buff_mz == NULL))
1015                         qat_xform->qat_comp_request_type =
1016                                         QAT_COMP_REQUEST_FIXED_COMP_STATELESS;
1017
1018                 else if ((xform->compress.deflate.huffman ==
1019                                 RTE_COMP_HUFFMAN_DYNAMIC ||
1020                                 xform->compress.deflate.huffman ==
1021                                                 RTE_COMP_HUFFMAN_DEFAULT) &&
1022                                 qat->interm_buff_mz != NULL)
1023
1024                         qat_xform->qat_comp_request_type =
1025                                         QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS;
1026
1027                 else {
1028                         QAT_LOG(ERR,
1029                                         "IM buffers needed for dynamic deflate. Set size in config file");
1030                         return -EINVAL;
1031                 }
1032
1033                 qat_xform->checksum_type = xform->compress.chksum;
1034
1035         } else {
1036                 qat_xform->qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
1037                 qat_xform->checksum_type = xform->decompress.chksum;
1038         }
1039
1040         if (qat_comp_create_templates(qat_xform, qat->interm_buff_mz, xform,
1041                                       NULL, RTE_COMP_OP_STATELESS)) {
1042                 QAT_LOG(ERR, "QAT: Problem with setting compression");
1043                 return -EINVAL;
1044         }
1045         return 0;
1046 }
1047
1048 /**
1049  * Free driver private_xform data.
1050  *
1051  * @param dev
1052  *   Compressdev device
1053  * @param private_xform
1054  *   handle of pmd's private_xform data
1055  * @return
1056  *  - 0 if successful
1057  *  - <0 in error cases
1058  *  - Returns -EINVAL if input parameters are invalid.
1059  */
1060 int
1061 qat_comp_private_xform_free(struct rte_compressdev *dev __rte_unused,
1062                             void *private_xform)
1063 {
1064         struct qat_comp_xform *qat_xform =
1065                         (struct qat_comp_xform *)private_xform;
1066
1067         if (qat_xform) {
1068                 memset(qat_xform, 0, qat_comp_xform_size());
1069                 struct rte_mempool *mp = rte_mempool_from_obj(qat_xform);
1070
1071                 rte_mempool_put(mp, qat_xform);
1072                 return 0;
1073         }
1074         return -EINVAL;
1075 }
1076
1077 /**
1078  * Reset stream state for the next use.
1079  *
1080  * @param stream
1081  *   handle of pmd's private stream data
1082  */
1083 static void
1084 qat_comp_stream_reset(struct qat_comp_stream *stream)
1085 {
1086         if (stream) {
1087                 memset(&stream->qat_xform, 0, sizeof(struct qat_comp_xform));
1088                 stream->start_of_packet = 1;
1089                 stream->op_in_progress = 0;
1090         }
1091 }
1092
1093 /**
1094  * Create driver private stream data.
1095  *
1096  * @param dev
1097  *   Compressdev device
1098  * @param xform
1099  *   xform data
1100  * @param stream
1101  *   ptr where handle of pmd's private stream data should be stored
1102  * @return
1103  *  - Returns 0 if private stream structure has been created successfully.
1104  *  - Returns -EINVAL if input parameters are invalid.
1105  *  - Returns -ENOTSUP if comp device does not support STATEFUL operations.
1106  *  - Returns -ENOTSUP if comp device does not support the comp transform.
1107  *  - Returns -ENOMEM if the private stream could not be allocated.
1108  */
1109 int
1110 qat_comp_stream_create(struct rte_compressdev *dev,
1111                        const struct rte_comp_xform *xform,
1112                        void **stream)
1113 {
1114         struct qat_comp_dev_private *qat = dev->data->dev_private;
1115         struct qat_comp_stream *ptr;
1116
1117         if (unlikely(stream == NULL)) {
1118                 QAT_LOG(ERR, "QAT: stream parameter is NULL");
1119                 return -EINVAL;
1120         }
1121         if (unlikely(xform->type == RTE_COMP_COMPRESS)) {
1122                 QAT_LOG(ERR, "QAT: stateful compression not supported");
1123                 return -ENOTSUP;
1124         }
1125         if (unlikely(qat->streampool == NULL)) {
1126                 QAT_LOG(ERR, "QAT device has no stream mempool");
1127                 return -ENOMEM;
1128         }
1129         if (rte_mempool_get(qat->streampool, stream)) {
1130                 QAT_LOG(ERR, "Couldn't get object from qat stream mempool");
1131                 return -ENOMEM;
1132         }
1133
1134         ptr = (struct qat_comp_stream *) *stream;
1135         qat_comp_stream_reset(ptr);
1136         ptr->qat_xform.qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
1137         ptr->qat_xform.checksum_type = xform->decompress.chksum;
1138
1139         if (qat_comp_create_templates(&ptr->qat_xform, qat->interm_buff_mz,
1140                                       xform, ptr, RTE_COMP_OP_STATEFUL)) {
1141                 QAT_LOG(ERR, "QAT: problem with creating descriptor template for stream");
1142                 rte_mempool_put(qat->streampool, *stream);
1143                 *stream = NULL;
1144                 return -EINVAL;
1145         }
1146
1147         return 0;
1148 }
1149
1150 /**
1151  * Free driver private stream data.
1152  *
1153  * @param dev
1154  *   Compressdev device
1155  * @param stream
1156  *   handle of pmd's private stream data
1157  * @return
1158  *  - 0 if successful
1159  *  - <0 in error cases
1160  *  - Returns -EINVAL if input parameters are invalid.
1161  *  - Returns -ENOTSUP if comp device does not support STATEFUL operations.
1162  *  - Returns -EBUSY if can't free stream as there are inflight operations
1163  */
1164 int
1165 qat_comp_stream_free(struct rte_compressdev *dev, void *stream)
1166 {
1167         if (stream) {
1168                 struct qat_comp_dev_private *qat = dev->data->dev_private;
1169                 qat_comp_stream_reset((struct qat_comp_stream *) stream);
1170                 rte_mempool_put(qat->streampool, stream);
1171                 return 0;
1172         }
1173         return -EINVAL;
1174 }