1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2021 Mellanox Technologies, Ltd
3 */
4
5 #include <rte_malloc.h>
6 #include <rte_log.h>
7 #include <rte_errno.h>
8 #include <rte_bus_pci.h>
9 #include <rte_spinlock.h>
10 #include <rte_comp.h>
11 #include <rte_compressdev.h>
12 #include <rte_compressdev_pmd.h>
13
14 #include <mlx5_glue.h>
15 #include <mlx5_common.h>
16 #include <mlx5_devx_cmds.h>
17 #include <mlx5_common_os.h>
18 #include <mlx5_common_devx.h>
19 #include <mlx5_common_mr.h>
20 #include <mlx5_prm.h>
21
22 #include "mlx5_compress_utils.h"
23
24 #define MLX5_COMPRESS_DRIVER_NAME mlx5_compress
25 #define MLX5_COMPRESS_MAX_QPS 1024
26 #define MLX5_COMP_MAX_WIN_SIZE_CONF 6u
27
28 struct mlx5_compress_devarg_params {
29 uint32_t log_block_sz;
30 };
31
32 struct mlx5_compress_xform {
33 LIST_ENTRY(mlx5_compress_xform) next;
34 enum rte_comp_xform_type type;
35 enum rte_comp_checksum_type csum_type;
36 uint32_t opcode;
37 uint32_t gga_ctrl1; /* BE. */
38 };
39
40 struct mlx5_compress_priv {
41 TAILQ_ENTRY(mlx5_compress_priv) next;
42 struct rte_compressdev *compressdev;
43 struct mlx5_common_device *cdev; /* Backend mlx5 device. */
44 struct mlx5_uar uar;
45 uint8_t min_block_size;
46 /* Minimum huffman block size supported by the device. */
47 struct rte_compressdev_config dev_config;
48 LIST_HEAD(xform_list, mlx5_compress_xform) xform_list;
49 rte_spinlock_t xform_sl;
50 /* HCA caps */
51 uint32_t mmo_decomp_sq:1;
52 uint32_t mmo_decomp_qp:1;
53 uint32_t mmo_comp_sq:1;
54 uint32_t mmo_comp_qp:1;
55 uint32_t mmo_dma_sq:1;
56 uint32_t mmo_dma_qp:1;
57 uint32_t log_block_sz;
58 };
59
60 struct mlx5_compress_qp {
61 uint16_t qp_id;
62 uint16_t entries_n;
63 uint16_t pi;
64 uint16_t ci;
65 struct mlx5_mr_ctrl mr_ctrl;
66 int socket_id;
67 struct mlx5_devx_cq cq;
68 struct mlx5_devx_qp qp;
69 struct mlx5_pmd_mr opaque_mr;
70 struct rte_comp_op **ops;
71 struct mlx5_compress_priv *priv;
72 struct rte_compressdev_stats stats;
73 };
74
75 TAILQ_HEAD(mlx5_compress_privs, mlx5_compress_priv) mlx5_compress_priv_list =
76 TAILQ_HEAD_INITIALIZER(mlx5_compress_priv_list);
77 static pthread_mutex_t priv_list_lock = PTHREAD_MUTEX_INITIALIZER;
78
79 int mlx5_compress_logtype;
80
81 static const struct rte_compressdev_capabilities mlx5_caps[] = {
82 {
83 .algo = RTE_COMP_ALGO_NULL,
84 .comp_feature_flags = RTE_COMP_FF_ADLER32_CHECKSUM |
85 RTE_COMP_FF_CRC32_CHECKSUM |
86 RTE_COMP_FF_CRC32_ADLER32_CHECKSUM |
87 RTE_COMP_FF_SHAREABLE_PRIV_XFORM,
88 },
89 {
90 .algo = RTE_COMP_ALGO_DEFLATE,
91 .comp_feature_flags = RTE_COMP_FF_ADLER32_CHECKSUM |
92 RTE_COMP_FF_CRC32_CHECKSUM |
93 RTE_COMP_FF_CRC32_ADLER32_CHECKSUM |
94 RTE_COMP_FF_SHAREABLE_PRIV_XFORM |
95 RTE_COMP_FF_HUFFMAN_FIXED |
96 RTE_COMP_FF_HUFFMAN_DYNAMIC,
97 .window_size = {.min = 10, .max = 15, .increment = 1},
98 },
99 {
100 .algo = RTE_COMP_ALGO_LIST_END,
101 }
102 };
103
104 static void
mlx5_compress_dev_info_get(struct rte_compressdev * dev,struct rte_compressdev_info * info)105 mlx5_compress_dev_info_get(struct rte_compressdev *dev,
106 struct rte_compressdev_info *info)
107 {
108 RTE_SET_USED(dev);
109 if (info != NULL) {
110 info->max_nb_queue_pairs = MLX5_COMPRESS_MAX_QPS;
111 info->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
112 info->capabilities = mlx5_caps;
113 }
114 }
115
116 static int
mlx5_compress_dev_configure(struct rte_compressdev * dev,struct rte_compressdev_config * config)117 mlx5_compress_dev_configure(struct rte_compressdev *dev,
118 struct rte_compressdev_config *config)
119 {
120 struct mlx5_compress_priv *priv;
121
122 if (dev == NULL || config == NULL)
123 return -EINVAL;
124 priv = dev->data->dev_private;
125 priv->dev_config = *config;
126 return 0;
127 }
128
129 static int
mlx5_compress_dev_close(struct rte_compressdev * dev)130 mlx5_compress_dev_close(struct rte_compressdev *dev)
131 {
132 RTE_SET_USED(dev);
133 return 0;
134 }
135
136 static int
mlx5_compress_qp_release(struct rte_compressdev * dev,uint16_t qp_id)137 mlx5_compress_qp_release(struct rte_compressdev *dev, uint16_t qp_id)
138 {
139 struct mlx5_compress_qp *qp = dev->data->queue_pairs[qp_id];
140
141 if (qp->qp.qp != NULL)
142 mlx5_devx_qp_destroy(&qp->qp);
143 if (qp->cq.cq != NULL)
144 mlx5_devx_cq_destroy(&qp->cq);
145 if (qp->opaque_mr.obj != NULL) {
146 void *opaq = qp->opaque_mr.addr;
147
148 mlx5_common_verbs_dereg_mr(&qp->opaque_mr);
149 rte_free(opaq);
150 }
151 mlx5_mr_btree_free(&qp->mr_ctrl.cache_bh);
152 rte_free(qp);
153 dev->data->queue_pairs[qp_id] = NULL;
154 return 0;
155 }
156
157 static void
mlx5_compress_init_qp(struct mlx5_compress_qp * qp)158 mlx5_compress_init_qp(struct mlx5_compress_qp *qp)
159 {
160 volatile struct mlx5_gga_wqe *restrict wqe =
161 (volatile struct mlx5_gga_wqe *)qp->qp.wqes;
162 volatile struct mlx5_gga_compress_opaque *opaq = qp->opaque_mr.addr;
163 const uint32_t sq_ds = rte_cpu_to_be_32((qp->qp.qp->id << 8) | 4u);
164 const uint32_t flags = RTE_BE32(MLX5_COMP_ALWAYS <<
165 MLX5_COMP_MODE_OFFSET);
166 const uint32_t opaq_lkey = rte_cpu_to_be_32(qp->opaque_mr.lkey);
167 int i;
168
169 /* All the next fields state should stay constant. */
170 for (i = 0; i < qp->entries_n; ++i, ++wqe) {
171 wqe->sq_ds = sq_ds;
172 wqe->flags = flags;
173 wqe->opaque_lkey = opaq_lkey;
174 wqe->opaque_vaddr = rte_cpu_to_be_64
175 ((uint64_t)(uintptr_t)&opaq[i]);
176 }
177 }
178
179 static int
mlx5_compress_qp_setup(struct rte_compressdev * dev,uint16_t qp_id,uint32_t max_inflight_ops,int socket_id)180 mlx5_compress_qp_setup(struct rte_compressdev *dev, uint16_t qp_id,
181 uint32_t max_inflight_ops, int socket_id)
182 {
183 struct mlx5_compress_priv *priv = dev->data->dev_private;
184 struct mlx5_compress_qp *qp;
185 struct mlx5_devx_cq_attr cq_attr = {
186 .uar_page_id = mlx5_os_get_devx_uar_page_id(priv->uar.obj),
187 };
188 struct mlx5_devx_qp_attr qp_attr = {
189 .pd = priv->cdev->pdn,
190 .uar_index = mlx5_os_get_devx_uar_page_id(priv->uar.obj),
191 .user_index = qp_id,
192 };
193 uint32_t log_ops_n = rte_log2_u32(max_inflight_ops);
194 uint32_t alloc_size = sizeof(*qp);
195 void *opaq_buf;
196 int ret;
197
198 alloc_size = RTE_ALIGN(alloc_size, RTE_CACHE_LINE_SIZE);
199 alloc_size += sizeof(struct rte_comp_op *) * (1u << log_ops_n);
200 qp = rte_zmalloc_socket(__func__, alloc_size, RTE_CACHE_LINE_SIZE,
201 socket_id);
202 if (qp == NULL) {
203 DRV_LOG(ERR, "Failed to allocate qp memory.");
204 rte_errno = ENOMEM;
205 return -rte_errno;
206 }
207 dev->data->queue_pairs[qp_id] = qp;
208 if (mlx5_mr_ctrl_init(&qp->mr_ctrl, &priv->cdev->mr_scache.dev_gen,
209 priv->dev_config.socket_id)) {
210 DRV_LOG(ERR, "Cannot allocate MR Btree for qp %u.",
211 (uint32_t)qp_id);
212 rte_errno = ENOMEM;
213 goto err;
214 }
215 opaq_buf = rte_calloc(__func__, (size_t)1 << log_ops_n,
216 sizeof(struct mlx5_gga_compress_opaque),
217 sizeof(struct mlx5_gga_compress_opaque));
218 if (opaq_buf == NULL) {
219 DRV_LOG(ERR, "Failed to allocate opaque memory.");
220 rte_errno = ENOMEM;
221 goto err;
222 }
223 qp->entries_n = 1 << log_ops_n;
224 qp->socket_id = socket_id;
225 qp->qp_id = qp_id;
226 qp->priv = priv;
227 qp->ops = (struct rte_comp_op **)RTE_ALIGN((uintptr_t)(qp + 1),
228 RTE_CACHE_LINE_SIZE);
229 if (mlx5_common_verbs_reg_mr(priv->cdev->pd, opaq_buf, qp->entries_n *
230 sizeof(struct mlx5_gga_compress_opaque),
231 &qp->opaque_mr) != 0) {
232 rte_free(opaq_buf);
233 DRV_LOG(ERR, "Failed to register opaque MR.");
234 rte_errno = ENOMEM;
235 goto err;
236 }
237 ret = mlx5_devx_cq_create(priv->cdev->ctx, &qp->cq, log_ops_n, &cq_attr,
238 socket_id);
239 if (ret != 0) {
240 DRV_LOG(ERR, "Failed to create CQ.");
241 goto err;
242 }
243 qp_attr.cqn = qp->cq.cq->id;
244 qp_attr.ts_format =
245 mlx5_ts_format_conv(priv->cdev->config.hca_attr.qp_ts_format);
246 qp_attr.num_of_receive_wqes = 0;
247 qp_attr.num_of_send_wqbbs = RTE_BIT32(log_ops_n);
248 qp_attr.mmo = priv->mmo_decomp_qp && priv->mmo_comp_qp
249 && priv->mmo_dma_qp;
250 ret = mlx5_devx_qp_create(priv->cdev->ctx, &qp->qp,
251 qp_attr.num_of_send_wqbbs *
252 MLX5_WQE_SIZE, &qp_attr, socket_id);
253 if (ret != 0) {
254 DRV_LOG(ERR, "Failed to create QP.");
255 goto err;
256 }
257 mlx5_compress_init_qp(qp);
258 ret = mlx5_devx_qp2rts(&qp->qp, 0);
259 if (ret)
260 goto err;
261 DRV_LOG(INFO, "QP %u: SQN=0x%X CQN=0x%X entries num = %u",
262 (uint32_t)qp_id, qp->qp.qp->id, qp->cq.cq->id, qp->entries_n);
263 return 0;
264 err:
265 mlx5_compress_qp_release(dev, qp_id);
266 return -1;
267 }
268
269 static int
mlx5_compress_xform_free(struct rte_compressdev * dev,void * xform)270 mlx5_compress_xform_free(struct rte_compressdev *dev, void *xform)
271 {
272 struct mlx5_compress_priv *priv = dev->data->dev_private;
273
274 rte_spinlock_lock(&priv->xform_sl);
275 LIST_REMOVE((struct mlx5_compress_xform *)xform, next);
276 rte_spinlock_unlock(&priv->xform_sl);
277 rte_free(xform);
278 return 0;
279 }
280
281 static int
mlx5_compress_xform_create(struct rte_compressdev * dev,const struct rte_comp_xform * xform,void ** private_xform)282 mlx5_compress_xform_create(struct rte_compressdev *dev,
283 const struct rte_comp_xform *xform,
284 void **private_xform)
285 {
286 struct mlx5_compress_priv *priv = dev->data->dev_private;
287 struct mlx5_compress_xform *xfrm;
288 uint32_t size;
289
290 switch (xform->type) {
291 case RTE_COMP_COMPRESS:
292 if (xform->compress.algo == RTE_COMP_ALGO_NULL &&
293 !priv->mmo_dma_qp && !priv->mmo_dma_sq) {
294 DRV_LOG(ERR, "Not enough capabilities to support DMA operation, maybe old FW/OFED version?");
295 return -ENOTSUP;
296 } else if (!priv->mmo_comp_qp && !priv->mmo_comp_sq) {
297 DRV_LOG(ERR, "Not enough capabilities to support compress operation, maybe old FW/OFED version?");
298 return -ENOTSUP;
299 }
300 if (xform->compress.level == RTE_COMP_LEVEL_NONE) {
301 DRV_LOG(ERR, "Non-compressed block is not supported.");
302 return -ENOTSUP;
303 }
304 if (xform->compress.hash_algo != RTE_COMP_HASH_ALGO_NONE) {
305 DRV_LOG(ERR, "SHA is not supported.");
306 return -ENOTSUP;
307 }
308 break;
309 case RTE_COMP_DECOMPRESS:
310 if (xform->decompress.algo == RTE_COMP_ALGO_NULL &&
311 !priv->mmo_dma_qp && !priv->mmo_dma_sq) {
312 DRV_LOG(ERR, "Not enough capabilities to support DMA operation, maybe old FW/OFED version?");
313 return -ENOTSUP;
314 } else if (!priv->mmo_decomp_qp && !priv->mmo_decomp_sq) {
315 DRV_LOG(ERR, "Not enough capabilities to support decompress operation, maybe old FW/OFED version?");
316 return -ENOTSUP;
317 }
318 if (xform->compress.hash_algo != RTE_COMP_HASH_ALGO_NONE) {
319 DRV_LOG(ERR, "SHA is not supported.");
320 return -ENOTSUP;
321 }
322 break;
323 default:
324 DRV_LOG(ERR, "Xform type should be compress/decompress");
325 return -ENOTSUP;
326 }
327
328 xfrm = rte_zmalloc_socket(__func__, sizeof(*xfrm), 0,
329 priv->dev_config.socket_id);
330 if (xfrm == NULL)
331 return -ENOMEM;
332 xfrm->opcode = MLX5_OPCODE_MMO;
333 xfrm->type = xform->type;
334 switch (xform->type) {
335 case RTE_COMP_COMPRESS:
336 switch (xform->compress.algo) {
337 case RTE_COMP_ALGO_NULL:
338 xfrm->opcode += MLX5_OPC_MOD_MMO_DMA <<
339 WQE_CSEG_OPC_MOD_OFFSET;
340 break;
341 case RTE_COMP_ALGO_DEFLATE:
342 size = 1 << xform->compress.window_size;
343 size /= MLX5_GGA_COMP_WIN_SIZE_UNITS;
344 xfrm->gga_ctrl1 += RTE_MIN(rte_log2_u32(size),
345 MLX5_COMP_MAX_WIN_SIZE_CONF) <<
346 WQE_GGA_COMP_WIN_SIZE_OFFSET;
347 size = priv->log_block_sz;
348 xfrm->gga_ctrl1 += size <<
349 WQE_GGA_COMP_BLOCK_SIZE_OFFSET;
350 xfrm->opcode += MLX5_OPC_MOD_MMO_COMP <<
351 WQE_CSEG_OPC_MOD_OFFSET;
352 size = xform->compress.deflate.huffman ==
353 RTE_COMP_HUFFMAN_DYNAMIC ?
354 MLX5_GGA_COMP_LOG_DYNAMIC_SIZE_MAX :
355 MLX5_GGA_COMP_LOG_DYNAMIC_SIZE_MIN;
356 xfrm->gga_ctrl1 += size <<
357 WQE_GGA_COMP_DYNAMIC_SIZE_OFFSET;
358 break;
359 default:
360 goto err;
361 }
362 xfrm->csum_type = xform->compress.chksum;
363 break;
364 case RTE_COMP_DECOMPRESS:
365 switch (xform->decompress.algo) {
366 case RTE_COMP_ALGO_NULL:
367 xfrm->opcode += MLX5_OPC_MOD_MMO_DMA <<
368 WQE_CSEG_OPC_MOD_OFFSET;
369 break;
370 case RTE_COMP_ALGO_DEFLATE:
371 xfrm->opcode += MLX5_OPC_MOD_MMO_DECOMP <<
372 WQE_CSEG_OPC_MOD_OFFSET;
373 break;
374 default:
375 goto err;
376 }
377 xfrm->csum_type = xform->decompress.chksum;
378 break;
379 default:
380 DRV_LOG(ERR, "Algorithm %u is not supported.", xform->type);
381 goto err;
382 }
383 DRV_LOG(DEBUG, "New xform: gga ctrl1 = 0x%08X opcode = 0x%08X csum "
384 "type = %d.", xfrm->gga_ctrl1, xfrm->opcode, xfrm->csum_type);
385 xfrm->gga_ctrl1 = rte_cpu_to_be_32(xfrm->gga_ctrl1);
386 rte_spinlock_lock(&priv->xform_sl);
387 LIST_INSERT_HEAD(&priv->xform_list, xfrm, next);
388 rte_spinlock_unlock(&priv->xform_sl);
389 *private_xform = xfrm;
390 return 0;
391 err:
392 rte_free(xfrm);
393 return -ENOTSUP;
394 }
395
396 static void
mlx5_compress_dev_stop(struct rte_compressdev * dev)397 mlx5_compress_dev_stop(struct rte_compressdev *dev)
398 {
399 RTE_SET_USED(dev);
400 }
401
402 static int
mlx5_compress_dev_start(struct rte_compressdev * dev)403 mlx5_compress_dev_start(struct rte_compressdev *dev)
404 {
405 struct mlx5_compress_priv *priv = dev->data->dev_private;
406
407 return mlx5_dev_mempool_subscribe(priv->cdev);
408 }
409
410 static void
mlx5_compress_stats_get(struct rte_compressdev * dev,struct rte_compressdev_stats * stats)411 mlx5_compress_stats_get(struct rte_compressdev *dev,
412 struct rte_compressdev_stats *stats)
413 {
414 int qp_id;
415
416 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
417 struct mlx5_compress_qp *qp = dev->data->queue_pairs[qp_id];
418
419 stats->enqueued_count += qp->stats.enqueued_count;
420 stats->dequeued_count += qp->stats.dequeued_count;
421 stats->enqueue_err_count += qp->stats.enqueue_err_count;
422 stats->dequeue_err_count += qp->stats.dequeue_err_count;
423 }
424 }
425
426 static void
mlx5_compress_stats_reset(struct rte_compressdev * dev)427 mlx5_compress_stats_reset(struct rte_compressdev *dev)
428 {
429 int qp_id;
430
431 for (qp_id = 0; qp_id < dev->data->nb_queue_pairs; qp_id++) {
432 struct mlx5_compress_qp *qp = dev->data->queue_pairs[qp_id];
433
434 memset(&qp->stats, 0, sizeof(qp->stats));
435 }
436 }
437
438 static struct rte_compressdev_ops mlx5_compress_ops = {
439 .dev_configure = mlx5_compress_dev_configure,
440 .dev_start = mlx5_compress_dev_start,
441 .dev_stop = mlx5_compress_dev_stop,
442 .dev_close = mlx5_compress_dev_close,
443 .dev_infos_get = mlx5_compress_dev_info_get,
444 .stats_get = mlx5_compress_stats_get,
445 .stats_reset = mlx5_compress_stats_reset,
446 .queue_pair_setup = mlx5_compress_qp_setup,
447 .queue_pair_release = mlx5_compress_qp_release,
448 .private_xform_create = mlx5_compress_xform_create,
449 .private_xform_free = mlx5_compress_xform_free,
450 .stream_create = NULL,
451 .stream_free = NULL,
452 };
453
454 static __rte_always_inline uint32_t
mlx5_compress_dseg_set(struct mlx5_compress_qp * qp,volatile struct mlx5_wqe_dseg * restrict dseg,struct rte_mbuf * restrict mbuf,uint32_t offset,uint32_t len)455 mlx5_compress_dseg_set(struct mlx5_compress_qp *qp,
456 volatile struct mlx5_wqe_dseg *restrict dseg,
457 struct rte_mbuf *restrict mbuf,
458 uint32_t offset, uint32_t len)
459 {
460 uintptr_t addr = rte_pktmbuf_mtod_offset(mbuf, uintptr_t, offset);
461
462 dseg->bcount = rte_cpu_to_be_32(len);
463 dseg->lkey = mlx5_mr_mb2mr(&qp->mr_ctrl, mbuf);
464 dseg->pbuf = rte_cpu_to_be_64(addr);
465 return dseg->lkey;
466 }
467
468 static uint16_t
mlx5_compress_enqueue_burst(void * queue_pair,struct rte_comp_op ** ops,uint16_t nb_ops)469 mlx5_compress_enqueue_burst(void *queue_pair, struct rte_comp_op **ops,
470 uint16_t nb_ops)
471 {
472 struct mlx5_compress_qp *qp = queue_pair;
473 volatile struct mlx5_gga_wqe *wqes = (volatile struct mlx5_gga_wqe *)
474 qp->qp.wqes, *wqe;
475 struct mlx5_compress_xform *xform;
476 struct rte_comp_op *op;
477 uint16_t mask = qp->entries_n - 1;
478 uint16_t remain = qp->entries_n - (qp->pi - qp->ci);
479 uint16_t idx;
480 bool invalid;
481
482 if (remain < nb_ops)
483 nb_ops = remain;
484 else
485 remain = nb_ops;
486 if (unlikely(remain == 0))
487 return 0;
488 do {
489 idx = qp->pi & mask;
490 wqe = &wqes[idx];
491 rte_prefetch0(&wqes[(qp->pi + 1) & mask]);
492 op = *ops++;
493 xform = op->private_xform;
494 /*
495 * Check operation arguments and error cases:
496 * - Operation type must be state-less.
497 * - Compress operation flush flag must be FULL or FINAL.
498 * - Source and destination buffers must be mapped internally.
499 */
500 invalid = op->op_type != RTE_COMP_OP_STATELESS ||
501 (xform->type == RTE_COMP_COMPRESS &&
502 op->flush_flag < RTE_COMP_FLUSH_FULL);
503 if (unlikely(invalid ||
504 (mlx5_compress_dseg_set(qp, &wqe->gather,
505 op->m_src,
506 op->src.offset,
507 op->src.length) ==
508 UINT32_MAX) ||
509 (mlx5_compress_dseg_set(qp, &wqe->scatter,
510 op->m_dst,
511 op->dst.offset,
512 rte_pktmbuf_pkt_len(op->m_dst) -
513 op->dst.offset) ==
514 UINT32_MAX))) {
515 op->status = invalid ? RTE_COMP_OP_STATUS_INVALID_ARGS :
516 RTE_COMP_OP_STATUS_ERROR;
517 nb_ops -= remain;
518 if (unlikely(nb_ops == 0))
519 return 0;
520 break;
521 }
522 wqe->gga_ctrl1 = xform->gga_ctrl1;
523 wqe->opcode = rte_cpu_to_be_32(xform->opcode + (qp->pi << 8));
524 qp->ops[idx] = op;
525 qp->pi++;
526 } while (--remain);
527 qp->stats.enqueued_count += nb_ops;
528 mlx5_doorbell_ring(&qp->priv->uar.bf_db, *(volatile uint64_t *)wqe,
529 qp->pi, &qp->qp.db_rec[MLX5_SND_DBR],
530 !qp->priv->uar.dbnc);
531 return nb_ops;
532 }
533
534 static void
mlx5_compress_dump_err_objs(volatile uint32_t * cqe,volatile uint32_t * wqe,volatile uint32_t * opaq)535 mlx5_compress_dump_err_objs(volatile uint32_t *cqe, volatile uint32_t *wqe,
536 volatile uint32_t *opaq)
537 {
538 size_t i;
539
540 DRV_LOG(ERR, "Error cqe:");
541 for (i = 0; i < sizeof(struct mlx5_err_cqe) >> 2; i += 4)
542 DRV_LOG(ERR, "%08X %08X %08X %08X", cqe[i], cqe[i + 1],
543 cqe[i + 2], cqe[i + 3]);
544 DRV_LOG(ERR, "\nError wqe:");
545 for (i = 0; i < sizeof(struct mlx5_gga_wqe) >> 2; i += 4)
546 DRV_LOG(ERR, "%08X %08X %08X %08X", wqe[i], wqe[i + 1],
547 wqe[i + 2], wqe[i + 3]);
548 DRV_LOG(ERR, "\nError opaq:");
549 for (i = 0; i < sizeof(struct mlx5_gga_compress_opaque) >> 2; i += 4)
550 DRV_LOG(ERR, "%08X %08X %08X %08X", opaq[i], opaq[i + 1],
551 opaq[i + 2], opaq[i + 3]);
552 }
553
554 static void
mlx5_compress_cqe_err_handle(struct mlx5_compress_qp * qp,struct rte_comp_op * op)555 mlx5_compress_cqe_err_handle(struct mlx5_compress_qp *qp,
556 struct rte_comp_op *op)
557 {
558 const uint32_t idx = qp->ci & (qp->entries_n - 1);
559 volatile struct mlx5_err_cqe *cqe = (volatile struct mlx5_err_cqe *)
560 &qp->cq.cqes[idx];
561 volatile struct mlx5_gga_wqe *wqes = (volatile struct mlx5_gga_wqe *)
562 qp->qp.wqes;
563 volatile struct mlx5_gga_compress_opaque *opaq = qp->opaque_mr.addr;
564
565 volatile uint32_t *synd_word = RTE_PTR_ADD(cqe, MLX5_ERROR_CQE_SYNDROME_OFFSET);
566 switch (*synd_word) {
567 case MLX5_GGA_COMP_OUT_OF_SPACE_SYNDROME_BE:
568 op->status = RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
569 DRV_LOG(DEBUG, "OUT OF SPACE error, output is bigger than dst buffer.");
570 break;
571 case MLX5_GGA_COMP_MISSING_BFINAL_SYNDROME_BE:
572 DRV_LOG(DEBUG, "The last compressed block missed the B-final flag; maybe the compressed data is not complete or garbaged?");
573 /* fallthrough */
574 default:
575 op->status = RTE_COMP_OP_STATUS_ERROR;
576 }
577 op->consumed = 0;
578 op->produced = 0;
579 op->output_chksum = 0;
580 op->debug_status = rte_be_to_cpu_32(opaq[idx].syndrom) |
581 ((uint64_t)rte_be_to_cpu_32(cqe->syndrome) << 32);
582 mlx5_compress_dump_err_objs((volatile uint32_t *)cqe,
583 (volatile uint32_t *)&wqes[idx],
584 (volatile uint32_t *)&opaq[idx]);
585 qp->stats.dequeue_err_count++;
586 }
587
588 static uint16_t
mlx5_compress_dequeue_burst(void * queue_pair,struct rte_comp_op ** ops,uint16_t nb_ops)589 mlx5_compress_dequeue_burst(void *queue_pair, struct rte_comp_op **ops,
590 uint16_t nb_ops)
591 {
592 struct mlx5_compress_qp *qp = queue_pair;
593 volatile struct mlx5_compress_xform *restrict xform;
594 volatile struct mlx5_cqe *restrict cqe;
595 volatile struct mlx5_gga_compress_opaque *opaq = qp->opaque_mr.addr;
596 struct rte_comp_op *restrict op;
597 const unsigned int cq_size = qp->entries_n;
598 const unsigned int mask = cq_size - 1;
599 uint32_t idx;
600 uint32_t next_idx = qp->ci & mask;
601 const uint16_t max = RTE_MIN((uint16_t)(qp->pi - qp->ci), nb_ops);
602 uint16_t i = 0;
603 int ret;
604
605 if (unlikely(max == 0))
606 return 0;
607 do {
608 idx = next_idx;
609 next_idx = (qp->ci + 1) & mask;
610 rte_prefetch0(&qp->cq.cqes[next_idx]);
611 rte_prefetch0(qp->ops[next_idx]);
612 op = qp->ops[idx];
613 cqe = &qp->cq.cqes[idx];
614 ret = check_cqe(cqe, cq_size, qp->ci);
615 /*
616 * Be sure owner read is done before any other cookie field or
617 * opaque field.
618 */
619 rte_io_rmb();
620 if (unlikely(ret != MLX5_CQE_STATUS_SW_OWN)) {
621 if (likely(ret == MLX5_CQE_STATUS_HW_OWN))
622 break;
623 mlx5_compress_cqe_err_handle(qp, op);
624 } else {
625 xform = op->private_xform;
626 op->status = RTE_COMP_OP_STATUS_SUCCESS;
627 op->consumed = op->src.length;
628 op->produced = rte_be_to_cpu_32(cqe->byte_cnt);
629 MLX5_ASSERT(cqe->byte_cnt ==
630 opaq[idx].scattered_length);
631 switch (xform->csum_type) {
632 case RTE_COMP_CHECKSUM_CRC32:
633 op->output_chksum = (uint64_t)rte_be_to_cpu_32
634 (opaq[idx].crc32);
635 break;
636 case RTE_COMP_CHECKSUM_ADLER32:
637 op->output_chksum = (uint64_t)rte_be_to_cpu_32
638 (opaq[idx].adler32) << 32;
639 break;
640 case RTE_COMP_CHECKSUM_CRC32_ADLER32:
641 op->output_chksum = (uint64_t)rte_be_to_cpu_32
642 (opaq[idx].crc32) |
643 ((uint64_t)rte_be_to_cpu_32
644 (opaq[idx].adler32) << 32);
645 break;
646 default:
647 break;
648 }
649 }
650 ops[i++] = op;
651 qp->ci++;
652 } while (i < max);
653 if (likely(i != 0)) {
654 rte_io_wmb();
655 qp->cq.db_rec[0] = rte_cpu_to_be_32(qp->ci);
656 qp->stats.dequeued_count += i;
657 }
658 return i;
659 }
660
661 static int
mlx5_compress_args_check_handler(const char * key,const char * val,void * opaque)662 mlx5_compress_args_check_handler(const char *key, const char *val, void *opaque)
663 {
664 struct mlx5_compress_devarg_params *devarg_prms = opaque;
665
666 if (strcmp(key, "log-block-size") == 0) {
667 errno = 0;
668 devarg_prms->log_block_sz = (uint32_t)strtoul(val, NULL, 10);
669 if (errno) {
670 DRV_LOG(WARNING, "%s: \"%s\" is an invalid integer.",
671 key, val);
672 return -errno;
673 }
674 }
675 return 0;
676 }
677
678 static int
mlx5_compress_handle_devargs(struct mlx5_kvargs_ctrl * mkvlist,struct mlx5_compress_devarg_params * devarg_prms,struct mlx5_hca_attr * att)679 mlx5_compress_handle_devargs(struct mlx5_kvargs_ctrl *mkvlist,
680 struct mlx5_compress_devarg_params *devarg_prms,
681 struct mlx5_hca_attr *att)
682 {
683 const char **params = (const char *[]){
684 "log-block-size",
685 NULL,
686 };
687
688 devarg_prms->log_block_sz = MLX5_GGA_COMP_LOG_BLOCK_SIZE_MAX;
689 if (mkvlist == NULL)
690 return 0;
691 if (mlx5_kvargs_process(mkvlist, params,
692 mlx5_compress_args_check_handler,
693 devarg_prms) != 0) {
694 DRV_LOG(ERR, "Devargs handler function Failed.");
695 rte_errno = EINVAL;
696 return -1;
697 }
698 if (devarg_prms->log_block_sz > MLX5_GGA_COMP_LOG_BLOCK_SIZE_MAX ||
699 devarg_prms->log_block_sz < att->compress_min_block_size) {
700 DRV_LOG(WARNING, "Log block size provided is out of range("
701 "%u); default it to %u.",
702 devarg_prms->log_block_sz,
703 MLX5_GGA_COMP_LOG_BLOCK_SIZE_MAX);
704 devarg_prms->log_block_sz = MLX5_GGA_COMP_LOG_BLOCK_SIZE_MAX;
705 }
706 return 0;
707 }
708
709 static int
mlx5_compress_dev_probe(struct mlx5_common_device * cdev,struct mlx5_kvargs_ctrl * mkvlist)710 mlx5_compress_dev_probe(struct mlx5_common_device *cdev,
711 struct mlx5_kvargs_ctrl *mkvlist)
712 {
713 struct rte_compressdev *compressdev;
714 struct mlx5_compress_priv *priv;
715 struct mlx5_hca_attr *attr = &cdev->config.hca_attr;
716 struct mlx5_compress_devarg_params devarg_prms = {0};
717 struct rte_compressdev_pmd_init_params init_params = {
718 .name = "",
719 .socket_id = cdev->dev->numa_node,
720 };
721 const char *ibdev_name = mlx5_os_get_ctx_device_name(cdev->ctx);
722
723 if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
724 DRV_LOG(ERR, "Non-primary process type is not supported.");
725 rte_errno = ENOTSUP;
726 return -rte_errno;
727 }
728 if (!attr->mmo_decompress_qp_en && !attr->mmo_decompress_sq_en
729 && !attr->mmo_compress_qp_en && !attr->mmo_compress_sq_en
730 && !attr->mmo_dma_qp_en && !attr->mmo_dma_sq_en) {
731 DRV_LOG(ERR, "Not enough capabilities to support compress operations, maybe old FW/OFED version?");
732 rte_errno = ENOTSUP;
733 return -ENOTSUP;
734 }
735 mlx5_compress_handle_devargs(mkvlist, &devarg_prms, attr);
736 compressdev = rte_compressdev_pmd_create(ibdev_name, cdev->dev,
737 sizeof(*priv), &init_params);
738 if (compressdev == NULL) {
739 DRV_LOG(ERR, "Failed to create device \"%s\".", ibdev_name);
740 return -ENODEV;
741 }
742 DRV_LOG(INFO,
743 "Compress device %s was created successfully.", ibdev_name);
744 compressdev->dev_ops = &mlx5_compress_ops;
745 compressdev->dequeue_burst = mlx5_compress_dequeue_burst;
746 compressdev->enqueue_burst = mlx5_compress_enqueue_burst;
747 compressdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED;
748 priv = compressdev->data->dev_private;
749 priv->log_block_sz = devarg_prms.log_block_sz;
750 priv->mmo_decomp_sq = attr->mmo_decompress_sq_en;
751 priv->mmo_decomp_qp = attr->mmo_decompress_qp_en;
752 priv->mmo_comp_sq = attr->mmo_compress_sq_en;
753 priv->mmo_comp_qp = attr->mmo_compress_qp_en;
754 priv->mmo_dma_sq = attr->mmo_dma_sq_en;
755 priv->mmo_dma_qp = attr->mmo_dma_qp_en;
756 priv->cdev = cdev;
757 priv->compressdev = compressdev;
758 priv->min_block_size = attr->compress_min_block_size;
759 if (mlx5_devx_uar_prepare(cdev, &priv->uar) != 0) {
760 rte_compressdev_pmd_destroy(priv->compressdev);
761 return -1;
762 }
763 pthread_mutex_lock(&priv_list_lock);
764 TAILQ_INSERT_TAIL(&mlx5_compress_priv_list, priv, next);
765 pthread_mutex_unlock(&priv_list_lock);
766 return 0;
767 }
768
769 static int
mlx5_compress_dev_remove(struct mlx5_common_device * cdev)770 mlx5_compress_dev_remove(struct mlx5_common_device *cdev)
771 {
772 struct mlx5_compress_priv *priv = NULL;
773
774 pthread_mutex_lock(&priv_list_lock);
775 TAILQ_FOREACH(priv, &mlx5_compress_priv_list, next)
776 if (priv->compressdev->device == cdev->dev)
777 break;
778 if (priv)
779 TAILQ_REMOVE(&mlx5_compress_priv_list, priv, next);
780 pthread_mutex_unlock(&priv_list_lock);
781 if (priv) {
782 mlx5_devx_uar_release(&priv->uar);
783 rte_compressdev_pmd_destroy(priv->compressdev);
784 }
785 return 0;
786 }
787
788 static const struct rte_pci_id mlx5_compress_pci_id_map[] = {
789 {
790 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
791 PCI_DEVICE_ID_MELLANOX_CONNECTX6DXBF)
792 },
793 {
794 .vendor_id = 0
795 }
796 };
797
798 static struct mlx5_class_driver mlx5_compress_driver = {
799 .drv_class = MLX5_CLASS_COMPRESS,
800 .name = RTE_STR(MLX5_COMPRESS_DRIVER_NAME),
801 .id_table = mlx5_compress_pci_id_map,
802 .probe = mlx5_compress_dev_probe,
803 .remove = mlx5_compress_dev_remove,
804 };
805
RTE_INIT(rte_mlx5_compress_init)806 RTE_INIT(rte_mlx5_compress_init)
807 {
808 mlx5_common_init();
809 if (mlx5_glue != NULL)
810 mlx5_class_driver_register(&mlx5_compress_driver);
811 }
812
813 RTE_LOG_REGISTER_DEFAULT(mlx5_compress_logtype, NOTICE)
814 RTE_PMD_EXPORT_NAME(MLX5_COMPRESS_DRIVER_NAME, __COUNTER__);
815 RTE_PMD_REGISTER_PCI_TABLE(MLX5_COMPRESS_DRIVER_NAME, mlx5_compress_pci_id_map);
816 RTE_PMD_REGISTER_KMOD_DEP(MLX5_COMPRESS_DRIVER_NAME, "* ib_uverbs & mlx5_core & mlx5_ib");
817