drivers/event/sw/sw_evdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2017 Intel Corporation
   3  */
   4
   5 #include <inttypes.h>
   6 #include <string.h>
   7
   8 #include <rte_bus_vdev.h>
   9 #include <rte_kvargs.h>
  10 #include <rte_ring.h>
  11 #include <rte_errno.h>
  12 #include <rte_event_ring.h>
  13 #include <rte_service_component.h>
  14
  15 #include "sw_evdev.h"
  16 #include "iq_chunk.h"
  17
  18 #define EVENTDEV_NAME_SW_PMD event_sw
  19 #define NUMA_NODE_ARG "numa_node"
  20 #define SCHED_QUANTA_ARG "sched_quanta"
  21 #define CREDIT_QUANTA_ARG "credit_quanta"
  22
  23 static void
  24 sw_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *info);
  25
  26 static int
  27 sw_port_link(struct rte_eventdev *dev, void *port, const uint8_t queues[],
  28                 const uint8_t priorities[], uint16_t num)
  29 {
  30         struct sw_port *p = port;
  31         struct sw_evdev *sw = sw_pmd_priv(dev);
  32         int i;
  33
  34         RTE_SET_USED(priorities);
  35         for (i = 0; i < num; i++) {
  36                 struct sw_qid *q = &sw->qids[queues[i]];
  37                 unsigned int j;
  38
  39                 /* check for qid map overflow */
  40                 if (q->cq_num_mapped_cqs >= RTE_DIM(q->cq_map)) {
  41                         rte_errno = -EDQUOT;
  42                         break;
  43                 }
  44
  45                 if (p->is_directed && p->num_qids_mapped > 0) {
  46                         rte_errno = -EDQUOT;
  47                         break;
  48                 }
  49
  50                 for (j = 0; j < q->cq_num_mapped_cqs; j++) {
  51                         if (q->cq_map[j] == p->id)
  52                                 break;
  53                 }
  54
  55                 /* check if port is already linked */
  56                 if (j < q->cq_num_mapped_cqs)
  57                         continue;
  58
  59                 if (q->type == SW_SCHED_TYPE_DIRECT) {
  60                         /* check directed qids only map to one port */
  61                         if (p->num_qids_mapped > 0) {
  62                                 rte_errno = -EDQUOT;
  63                                 break;
  64                         }
  65                         /* check port only takes a directed flow */
  66                         if (num > 1) {
  67                                 rte_errno = -EDQUOT;
  68                                 break;
  69                         }
  70
  71                         p->is_directed = 1;
  72                         p->num_qids_mapped = 1;
  73                 } else if (q->type == RTE_SCHED_TYPE_ORDERED) {
  74                         p->num_ordered_qids++;
  75                         p->num_qids_mapped++;
  76                 } else if (q->type == RTE_SCHED_TYPE_ATOMIC ||
  77                                 q->type == RTE_SCHED_TYPE_PARALLEL) {
  78                         p->num_qids_mapped++;
  79                 }
  80
  81                 q->cq_map[q->cq_num_mapped_cqs] = p->id;
  82                 rte_smp_wmb();
  83                 q->cq_num_mapped_cqs++;
  84         }
  85         return i;
  86 }
  87
  88 static int
  89 sw_port_unlink(struct rte_eventdev *dev, void *port, uint8_t queues[],
  90                 uint16_t nb_unlinks)
  91 {
  92         struct sw_port *p = port;
  93         struct sw_evdev *sw = sw_pmd_priv(dev);
  94         unsigned int i, j;
  95
  96         int unlinked = 0;
  97         for (i = 0; i < nb_unlinks; i++) {
  98                 struct sw_qid *q = &sw->qids[queues[i]];
  99                 for (j = 0; j < q->cq_num_mapped_cqs; j++) {
 100                         if (q->cq_map[j] == p->id) {
 101                                 q->cq_map[j] =
 102                                         q->cq_map[q->cq_num_mapped_cqs - 1];
 103                                 rte_smp_wmb();
 104                                 q->cq_num_mapped_cqs--;
 105                                 unlinked++;
 106
 107                                 p->num_qids_mapped--;
 108
 109                                 if (q->type == RTE_SCHED_TYPE_ORDERED)
 110                                         p->num_ordered_qids--;
 111
 112                                 continue;
 113                         }
 114                 }
 115         }
 116         return unlinked;
 117 }
 118
 119 static int
 120 sw_port_setup(struct rte_eventdev *dev, uint8_t port_id,
 121                 const struct rte_event_port_conf *conf)
 122 {
 123         struct sw_evdev *sw = sw_pmd_priv(dev);
 124         struct sw_port *p = &sw->ports[port_id];
 125         char buf[RTE_RING_NAMESIZE];
 126         unsigned int i;
 127
 128         struct rte_event_dev_info info;
 129         sw_info_get(dev, &info);
 130
 131         /* detect re-configuring and return credits to instance if needed */
 132         if (p->initialized) {
 133                 /* taking credits from pool is done one quanta at a time, and
 134                  * credits may be spend (counted in p->inflights) or still
 135                  * available in the port (p->inflight_credits). We must return
 136                  * the sum to no leak credits
 137                  */
 138                 int possible_inflights = p->inflight_credits + p->inflights;
 139                 rte_atomic32_sub(&sw->inflights, possible_inflights);
 140         }
 141
 142         *p = (struct sw_port){0}; /* zero entire structure */
 143         p->id = port_id;
 144         p->sw = sw;
 145
 146         /* check to see if rings exists - port_setup() can be called multiple
 147          * times legally (assuming device is stopped). If ring exists, free it
 148          * to so it gets re-created with the correct size
 149          */
 150         snprintf(buf, sizeof(buf), "sw%d_p%u_%s", dev->data->dev_id,
 151                         port_id, "rx_worker_ring");
 152         struct rte_event_ring *existing_ring = rte_event_ring_lookup(buf);
 153         if (existing_ring)
 154                 rte_event_ring_free(existing_ring);
 155
 156         p->rx_worker_ring = rte_event_ring_create(buf, MAX_SW_PROD_Q_DEPTH,
 157                         dev->data->socket_id,
 158                         RING_F_SP_ENQ | RING_F_SC_DEQ | RING_F_EXACT_SZ);
 159         if (p->rx_worker_ring == NULL) {
 160                 SW_LOG_ERR("Error creating RX worker ring for port %d\n",
 161                                 port_id);
 162                 return -1;
 163         }
 164
 165         p->inflight_max = conf->new_event_threshold;
 166         p->implicit_release = !conf->disable_implicit_release;
 167
 168         /* check if ring exists, same as rx_worker above */
 169         snprintf(buf, sizeof(buf), "sw%d_p%u, %s", dev->data->dev_id,
 170                         port_id, "cq_worker_ring");
 171         existing_ring = rte_event_ring_lookup(buf);
 172         if (existing_ring)
 173                 rte_event_ring_free(existing_ring);
 174
 175         p->cq_worker_ring = rte_event_ring_create(buf, conf->dequeue_depth,
 176                         dev->data->socket_id,
 177                         RING_F_SP_ENQ | RING_F_SC_DEQ | RING_F_EXACT_SZ);
 178         if (p->cq_worker_ring == NULL) {
 179                 rte_event_ring_free(p->rx_worker_ring);
 180                 SW_LOG_ERR("Error creating CQ worker ring for port %d\n",
 181                                 port_id);
 182                 return -1;
 183         }
 184         sw->cq_ring_space[port_id] = conf->dequeue_depth;
 185
 186         /* set hist list contents to empty */
 187         for (i = 0; i < SW_PORT_HIST_LIST; i++) {
 188                 p->hist_list[i].fid = -1;
 189                 p->hist_list[i].qid = -1;
 190         }
 191         dev->data->ports[port_id] = p;
 192
 193         rte_smp_wmb();
 194         p->initialized = 1;
 195         return 0;
 196 }
 197
 198 static void
 199 sw_port_release(void *port)
 200 {
 201         struct sw_port *p = (void *)port;
 202         if (p == NULL)
 203                 return;
 204
 205         rte_event_ring_free(p->rx_worker_ring);
 206         rte_event_ring_free(p->cq_worker_ring);
 207         memset(p, 0, sizeof(*p));
 208 }
 209
 210 static int32_t
 211 qid_init(struct sw_evdev *sw, unsigned int idx, int type,
 212                 const struct rte_event_queue_conf *queue_conf)
 213 {
 214         unsigned int i;
 215         int dev_id = sw->data->dev_id;
 216         int socket_id = sw->data->socket_id;
 217         char buf[IQ_ROB_NAMESIZE];
 218         struct sw_qid *qid = &sw->qids[idx];
 219
 220         /* Initialize the FID structures to no pinning (-1), and zero packets */
 221         const struct sw_fid_t fid = {.cq = -1, .pcount = 0};
 222         for (i = 0; i < RTE_DIM(qid->fids); i++)
 223                 qid->fids[i] = fid;
 224
 225         qid->id = idx;
 226         qid->type = type;
 227         qid->priority = queue_conf->priority;
 228
 229         if (qid->type == RTE_SCHED_TYPE_ORDERED) {
 230                 char ring_name[RTE_RING_NAMESIZE];
 231                 uint32_t window_size;
 232
 233                 /* rte_ring and window_size_mask require require window_size to
 234                  * be a power-of-2.
 235                  */
 236                 window_size = rte_align32pow2(
 237                                 queue_conf->nb_atomic_order_sequences);
 238
 239                 qid->window_size = window_size - 1;
 240
 241                 if (!window_size) {
 242                         SW_LOG_DBG(
 243                                 "invalid reorder_window_size for ordered queue\n"
 244                                 );
 245                         goto cleanup;
 246                 }
 247
 248                 snprintf(buf, sizeof(buf), "sw%d_iq_%d_rob", dev_id, i);
 249                 qid->reorder_buffer = rte_zmalloc_socket(buf,
 250                                 window_size * sizeof(qid->reorder_buffer[0]),
 251                                 0, socket_id);
 252                 if (!qid->reorder_buffer) {
 253                         SW_LOG_DBG("reorder_buffer malloc failed\n");
 254                         goto cleanup;
 255                 }
 256
 257                 memset(&qid->reorder_buffer[0],
 258                        0,
 259                        window_size * sizeof(qid->reorder_buffer[0]));
 260
 261                 snprintf(ring_name, sizeof(ring_name), "sw%d_q%d_freelist",
 262                                 dev_id, idx);
 263
 264                 /* lookup the ring, and if it already exists, free it */
 265                 struct rte_ring *cleanup = rte_ring_lookup(ring_name);
 266                 if (cleanup)
 267                         rte_ring_free(cleanup);
 268
 269                 qid->reorder_buffer_freelist = rte_ring_create(ring_name,
 270                                 window_size,
 271                                 socket_id,
 272                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 273                 if (!qid->reorder_buffer_freelist) {
 274                         SW_LOG_DBG("freelist ring create failed");
 275                         goto cleanup;
 276                 }
 277
 278                 /* Populate the freelist with reorder buffer entries. Enqueue
 279                  * 'window_size - 1' entries because the rte_ring holds only
 280                  * that many.
 281                  */
 282                 for (i = 0; i < window_size - 1; i++) {
 283                         if (rte_ring_sp_enqueue(qid->reorder_buffer_freelist,
 284                                                 &qid->reorder_buffer[i]) < 0)
 285                                 goto cleanup;
 286                 }
 287
 288                 qid->reorder_buffer_index = 0;
 289                 qid->cq_next_tx = 0;
 290         }
 291
 292         qid->initialized = 1;
 293
 294         return 0;
 295
 296 cleanup:
 297         if (qid->reorder_buffer) {
 298                 rte_free(qid->reorder_buffer);
 299                 qid->reorder_buffer = NULL;
 300         }
 301
 302         if (qid->reorder_buffer_freelist) {
 303                 rte_ring_free(qid->reorder_buffer_freelist);
 304                 qid->reorder_buffer_freelist = NULL;
 305         }
 306
 307         return -EINVAL;
 308 }
 309
 310 static void
 311 sw_queue_release(struct rte_eventdev *dev, uint8_t id)
 312 {
 313         struct sw_evdev *sw = sw_pmd_priv(dev);
 314         struct sw_qid *qid = &sw->qids[id];
 315
 316         if (qid->type == RTE_SCHED_TYPE_ORDERED) {
 317                 rte_free(qid->reorder_buffer);
 318                 rte_ring_free(qid->reorder_buffer_freelist);
 319         }
 320         memset(qid, 0, sizeof(*qid));
 321 }
 322
 323 static int
 324 sw_queue_setup(struct rte_eventdev *dev, uint8_t queue_id,
 325                 const struct rte_event_queue_conf *conf)
 326 {
 327         int type;
 328
 329         type = conf->schedule_type;
 330
 331         if (RTE_EVENT_QUEUE_CFG_SINGLE_LINK & conf->event_queue_cfg) {
 332                 type = SW_SCHED_TYPE_DIRECT;
 333         } else if (RTE_EVENT_QUEUE_CFG_ALL_TYPES
 334                         & conf->event_queue_cfg) {
 335                 SW_LOG_ERR("QUEUE_CFG_ALL_TYPES not supported\n");
 336                 return -ENOTSUP;
 337         }
 338
 339         struct sw_evdev *sw = sw_pmd_priv(dev);
 340
 341         if (sw->qids[queue_id].initialized)
 342                 sw_queue_release(dev, queue_id);
 343
 344         return qid_init(sw, queue_id, type, conf);
 345 }
 346
 347 static void
 348 sw_init_qid_iqs(struct sw_evdev *sw)
 349 {
 350         int i, j;
 351
 352         /* Initialize the IQ memory of all configured qids */
 353         for (i = 0; i < RTE_EVENT_MAX_QUEUES_PER_DEV; i++) {
 354                 struct sw_qid *qid = &sw->qids[i];
 355
 356                 if (!qid->initialized)
 357                         continue;
 358
 359                 for (j = 0; j < SW_IQS_MAX; j++)
 360                         iq_init(sw, &qid->iq[j]);
 361         }
 362 }
 363
 364 static void
 365 sw_clean_qid_iqs(struct sw_evdev *sw)
 366 {
 367         int i, j;
 368
 369         /* Release the IQ memory of all configured qids */
 370         for (i = 0; i < RTE_EVENT_MAX_QUEUES_PER_DEV; i++) {
 371                 struct sw_qid *qid = &sw->qids[i];
 372
 373                 for (j = 0; j < SW_IQS_MAX; j++) {
 374                         if (!qid->iq[j].head)
 375                                 continue;
 376                         iq_free_chunk_list(sw, qid->iq[j].head);
 377                         qid->iq[j].head = NULL;
 378                 }
 379         }
 380 }
 381
 382 static void
 383 sw_queue_def_conf(struct rte_eventdev *dev, uint8_t queue_id,
 384                                  struct rte_event_queue_conf *conf)
 385 {
 386         RTE_SET_USED(dev);
 387         RTE_SET_USED(queue_id);
 388
 389         static const struct rte_event_queue_conf default_conf = {
 390                 .nb_atomic_flows = 4096,
 391                 .nb_atomic_order_sequences = 1,
 392                 .schedule_type = RTE_SCHED_TYPE_ATOMIC,
 393                 .priority = RTE_EVENT_DEV_PRIORITY_NORMAL,
 394         };
 395
 396         *conf = default_conf;
 397 }
 398
 399 static void
 400 sw_port_def_conf(struct rte_eventdev *dev, uint8_t port_id,
 401                  struct rte_event_port_conf *port_conf)
 402 {
 403         RTE_SET_USED(dev);
 404         RTE_SET_USED(port_id);
 405
 406         port_conf->new_event_threshold = 1024;
 407         port_conf->dequeue_depth = 16;
 408         port_conf->enqueue_depth = 16;
 409         port_conf->disable_implicit_release = 0;
 410 }
 411
 412 static int
 413 sw_dev_configure(const struct rte_eventdev *dev)
 414 {
 415         struct sw_evdev *sw = sw_pmd_priv(dev);
 416         const struct rte_eventdev_data *data = dev->data;
 417         const struct rte_event_dev_config *conf = &data->dev_conf;
 418         int num_chunks, i;
 419
 420         sw->qid_count = conf->nb_event_queues;
 421         sw->port_count = conf->nb_event_ports;
 422         sw->nb_events_limit = conf->nb_events_limit;
 423         rte_atomic32_set(&sw->inflights, 0);
 424
 425         /* Number of chunks sized for worst-case spread of events across IQs */
 426         num_chunks = ((SW_INFLIGHT_EVENTS_TOTAL/SW_EVS_PER_Q_CHUNK)+1) +
 427                         sw->qid_count*SW_IQS_MAX*2;
 428
 429         /* If this is a reconfiguration, free the previous IQ allocation. All
 430          * IQ chunk references were cleaned out of the QIDs in sw_stop(), and
 431          * will be reinitialized in sw_start().
 432          */
 433         if (sw->chunks)
 434                 rte_free(sw->chunks);
 435
 436         sw->chunks = rte_malloc_socket(NULL,
 437                                        sizeof(struct sw_queue_chunk) *
 438                                        num_chunks,
 439                                        0,
 440                                        sw->data->socket_id);
 441         if (!sw->chunks)
 442                 return -ENOMEM;
 443
 444         sw->chunk_list_head = NULL;
 445         for (i = 0; i < num_chunks; i++)
 446                 iq_free_chunk(sw, &sw->chunks[i]);
 447
 448         if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT)
 449                 return -ENOTSUP;
 450
 451         return 0;
 452 }
 453
 454 struct rte_eth_dev;
 455
 456 static int
 457 sw_eth_rx_adapter_caps_get(const struct rte_eventdev *dev,
 458                         const struct rte_eth_dev *eth_dev,
 459                         uint32_t *caps)
 460 {
 461         RTE_SET_USED(dev);
 462         RTE_SET_USED(eth_dev);
 463         *caps = RTE_EVENT_ETH_RX_ADAPTER_SW_CAP;
 464         return 0;
 465 }
 466
 467 static int
 468 sw_timer_adapter_caps_get(const struct rte_eventdev *dev,
 469                           uint64_t flags,
 470                           uint32_t *caps,
 471                           const struct rte_event_timer_adapter_ops **ops)
 472 {
 473         RTE_SET_USED(dev);
 474         RTE_SET_USED(flags);
 475         *caps = 0;
 476
 477         /* Use default SW ops */
 478         *ops = NULL;
 479
 480         return 0;
 481 }
 482
 483 static void
 484 sw_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *info)
 485 {
 486         RTE_SET_USED(dev);
 487
 488         static const struct rte_event_dev_info evdev_sw_info = {
 489                         .driver_name = SW_PMD_NAME,
 490                         .max_event_queues = RTE_EVENT_MAX_QUEUES_PER_DEV,
 491                         .max_event_queue_flows = SW_QID_NUM_FIDS,
 492                         .max_event_queue_priority_levels = SW_Q_PRIORITY_MAX,
 493                         .max_event_priority_levels = SW_IQS_MAX,
 494                         .max_event_ports = SW_PORTS_MAX,
 495                         .max_event_port_dequeue_depth = MAX_SW_CONS_Q_DEPTH,
 496                         .max_event_port_enqueue_depth = MAX_SW_PROD_Q_DEPTH,
 497                         .max_num_events = SW_INFLIGHT_EVENTS_TOTAL,
 498                         .event_dev_cap = (
 499                                 RTE_EVENT_DEV_CAP_QUEUE_QOS |
 500                                 RTE_EVENT_DEV_CAP_BURST_MODE |
 501                                 RTE_EVENT_DEV_CAP_EVENT_QOS |
 502                                 RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE|
 503                                 RTE_EVENT_DEV_CAP_RUNTIME_PORT_LINK |
 504                                 RTE_EVENT_DEV_CAP_MULTIPLE_QUEUE_PORT |
 505                                 RTE_EVENT_DEV_CAP_NONSEQ_MODE),
 506         };
 507
 508         *info = evdev_sw_info;
 509 }
 510
 511 static void
 512 sw_dump(struct rte_eventdev *dev, FILE *f)
 513 {
 514         const struct sw_evdev *sw = sw_pmd_priv(dev);
 515
 516         static const char * const q_type_strings[] = {
 517                         "Ordered", "Atomic", "Parallel", "Directed"
 518         };
 519         uint32_t i;
 520         fprintf(f, "EventDev %s: ports %d, qids %d\n", "todo-fix-name",
 521                         sw->port_count, sw->qid_count);
 522
 523         fprintf(f, "\trx   %"PRIu64"\n\tdrop %"PRIu64"\n\ttx   %"PRIu64"\n",
 524                 sw->stats.rx_pkts, sw->stats.rx_dropped, sw->stats.tx_pkts);
 525         fprintf(f, "\tsched calls: %"PRIu64"\n", sw->sched_called);
 526         fprintf(f, "\tsched cq/qid call: %"PRIu64"\n", sw->sched_cq_qid_called);
 527         fprintf(f, "\tsched no IQ enq: %"PRIu64"\n", sw->sched_no_iq_enqueues);
 528         fprintf(f, "\tsched no CQ enq: %"PRIu64"\n", sw->sched_no_cq_enqueues);
 529         uint32_t inflights = rte_atomic32_read(&sw->inflights);
 530         uint32_t credits = sw->nb_events_limit - inflights;
 531         fprintf(f, "\tinflight %d, credits: %d\n", inflights, credits);
 532
 533 #define COL_RED "\x1b[31m"
 534 #define COL_RESET "\x1b[0m"
 535
 536         for (i = 0; i < sw->port_count; i++) {
 537                 int max, j;
 538                 const struct sw_port *p = &sw->ports[i];
 539                 if (!p->initialized) {
 540                         fprintf(f, "  %sPort %d not initialized.%s\n",
 541                                 COL_RED, i, COL_RESET);
 542                         continue;
 543                 }
 544                 fprintf(f, "  Port %d %s\n", i,
 545                         p->is_directed ? " (SingleCons)" : "");
 546                 fprintf(f, "\trx   %"PRIu64"\tdrop %"PRIu64"\ttx   %"PRIu64
 547                         "\t%sinflight %d%s\n", sw->ports[i].stats.rx_pkts,
 548                         sw->ports[i].stats.rx_dropped,
 549                         sw->ports[i].stats.tx_pkts,
 550                         (p->inflights == p->inflight_max) ?
 551                                 COL_RED : COL_RESET,
 552                         sw->ports[i].inflights, COL_RESET);
 553
 554                 fprintf(f, "\tMax New: %u"
 555                         "\tAvg cycles PP: %"PRIu64"\tCredits: %u\n",
 556                         sw->ports[i].inflight_max,
 557                         sw->ports[i].avg_pkt_ticks,
 558                         sw->ports[i].inflight_credits);
 559                 fprintf(f, "\tReceive burst distribution:\n");
 560                 float zp_percent = p->zero_polls * 100.0 / p->total_polls;
 561                 fprintf(f, zp_percent < 10 ? "\t\t0:%.02f%% " : "\t\t0:%.0f%% ",
 562                                 zp_percent);
 563                 for (max = (int)RTE_DIM(p->poll_buckets); max-- > 0;)
 564                         if (p->poll_buckets[max] != 0)
 565                                 break;
 566                 for (j = 0; j <= max; j++) {
 567                         if (p->poll_buckets[j] != 0) {
 568                                 float poll_pc = p->poll_buckets[j] * 100.0 /
 569                                         p->total_polls;
 570                                 fprintf(f, "%u-%u:%.02f%% ",
 571                                         ((j << SW_DEQ_STAT_BUCKET_SHIFT) + 1),
 572                                         ((j+1) << SW_DEQ_STAT_BUCKET_SHIFT),
 573                                         poll_pc);
 574                         }
 575                 }
 576                 fprintf(f, "\n");
 577
 578                 if (p->rx_worker_ring) {
 579                         uint64_t used = rte_event_ring_count(p->rx_worker_ring);
 580                         uint64_t space = rte_event_ring_free_count(
 581                                         p->rx_worker_ring);
 582                         const char *col = (space == 0) ? COL_RED : COL_RESET;
 583                         fprintf(f, "\t%srx ring used: %4"PRIu64"\tfree: %4"
 584                                         PRIu64 COL_RESET"\n", col, used, space);
 585                 } else
 586                         fprintf(f, "\trx ring not initialized.\n");
 587
 588                 if (p->cq_worker_ring) {
 589                         uint64_t used = rte_event_ring_count(p->cq_worker_ring);
 590                         uint64_t space = rte_event_ring_free_count(
 591                                         p->cq_worker_ring);
 592                         const char *col = (space == 0) ? COL_RED : COL_RESET;
 593                         fprintf(f, "\t%scq ring used: %4"PRIu64"\tfree: %4"
 594                                         PRIu64 COL_RESET"\n", col, used, space);
 595                 } else
 596                         fprintf(f, "\tcq ring not initialized.\n");
 597         }
 598
 599         for (i = 0; i < sw->qid_count; i++) {
 600                 const struct sw_qid *qid = &sw->qids[i];
 601                 if (!qid->initialized) {
 602                         fprintf(f, "  %sQueue %d not initialized.%s\n",
 603                                 COL_RED, i, COL_RESET);
 604                         continue;
 605                 }
 606                 int affinities_per_port[SW_PORTS_MAX] = {0};
 607                 uint32_t inflights = 0;
 608
 609                 fprintf(f, "  Queue %d (%s)\n", i, q_type_strings[qid->type]);
 610                 fprintf(f, "\trx   %"PRIu64"\tdrop %"PRIu64"\ttx   %"PRIu64"\n",
 611                         qid->stats.rx_pkts, qid->stats.rx_dropped,
 612                         qid->stats.tx_pkts);
 613                 if (qid->type == RTE_SCHED_TYPE_ORDERED) {
 614                         struct rte_ring *rob_buf_free =
 615                                 qid->reorder_buffer_freelist;
 616                         if (rob_buf_free)
 617                                 fprintf(f, "\tReorder entries in use: %u\n",
 618                                         rte_ring_free_count(rob_buf_free));
 619                         else
 620                                 fprintf(f,
 621                                         "\tReorder buffer not initialized\n");
 622                 }
 623
 624                 uint32_t flow;
 625                 for (flow = 0; flow < RTE_DIM(qid->fids); flow++)
 626                         if (qid->fids[flow].cq != -1) {
 627                                 affinities_per_port[qid->fids[flow].cq]++;
 628                                 inflights += qid->fids[flow].pcount;
 629                         }
 630
 631                 uint32_t port;
 632                 fprintf(f, "\tPer Port Stats:\n");
 633                 for (port = 0; port < sw->port_count; port++) {
 634                         fprintf(f, "\t  Port %d: Pkts: %"PRIu64, port,
 635                                         qid->to_port[port]);
 636                         fprintf(f, "\tFlows: %d\n", affinities_per_port[port]);
 637                 }
 638
 639                 uint32_t iq;
 640                 uint32_t iq_printed = 0;
 641                 for (iq = 0; iq < SW_IQS_MAX; iq++) {
 642                         if (!qid->iq[iq].head) {
 643                                 fprintf(f, "\tiq %d is not initialized.\n", iq);
 644                                 iq_printed = 1;
 645                                 continue;
 646                         }
 647                         uint32_t used = iq_count(&qid->iq[iq]);
 648                         const char *col = COL_RESET;
 649                         if (used > 0) {
 650                                 fprintf(f, "\t%siq %d: Used %d"
 651                                         COL_RESET"\n", col, iq, used);
 652                                 iq_printed = 1;
 653                         }
 654                 }
 655                 if (iq_printed == 0)
 656                         fprintf(f, "\t-- iqs empty --\n");
 657         }
 658 }
 659
 660 static int
 661 sw_start(struct rte_eventdev *dev)
 662 {
 663         unsigned int i, j;
 664         struct sw_evdev *sw = sw_pmd_priv(dev);
 665
 666         rte_service_component_runstate_set(sw->service_id, 1);
 667
 668         /* check a service core is mapped to this service */
 669         if (!rte_service_runstate_get(sw->service_id)) {
 670                 SW_LOG_ERR("Warning: No Service core enabled on service %s\n",
 671                                 sw->service_name);
 672                 return -ENOENT;
 673         }
 674
 675         /* check all ports are set up */
 676         for (i = 0; i < sw->port_count; i++)
 677                 if (sw->ports[i].rx_worker_ring == NULL) {
 678                         SW_LOG_ERR("Port %d not configured\n", i);
 679                         return -ESTALE;
 680                 }
 681
 682         /* check all queues are configured and mapped to ports*/
 683         for (i = 0; i < sw->qid_count; i++)
 684                 if (!sw->qids[i].initialized ||
 685                     sw->qids[i].cq_num_mapped_cqs == 0) {
 686                         SW_LOG_ERR("Queue %d not configured\n", i);
 687                         return -ENOLINK;
 688                 }
 689
 690         /* build up our prioritized array of qids */
 691         /* We don't use qsort here, as if all/multiple entries have the same
 692          * priority, the result is non-deterministic. From "man 3 qsort":
 693          * "If two members compare as equal, their order in the sorted
 694          * array is undefined."
 695          */
 696         uint32_t qidx = 0;
 697         for (j = 0; j <= RTE_EVENT_DEV_PRIORITY_LOWEST; j++) {
 698                 for (i = 0; i < sw->qid_count; i++) {
 699                         if (sw->qids[i].priority == j) {
 700                                 sw->qids_prioritized[qidx] = &sw->qids[i];
 701                                 qidx++;
 702                         }
 703                 }
 704         }
 705
 706         sw_init_qid_iqs(sw);
 707
 708         if (sw_xstats_init(sw) < 0)
 709                 return -EINVAL;
 710
 711         rte_smp_wmb();
 712         sw->started = 1;
 713
 714         return 0;
 715 }
 716
 717 static void
 718 sw_stop(struct rte_eventdev *dev)
 719 {
 720         struct sw_evdev *sw = sw_pmd_priv(dev);
 721         sw_clean_qid_iqs(sw);
 722         sw_xstats_uninit(sw);
 723         sw->started = 0;
 724         rte_smp_wmb();
 725 }
 726
 727 static int
 728 sw_close(struct rte_eventdev *dev)
 729 {
 730         struct sw_evdev *sw = sw_pmd_priv(dev);
 731         uint32_t i;
 732
 733         for (i = 0; i < sw->qid_count; i++)
 734                 sw_queue_release(dev, i);
 735         sw->qid_count = 0;
 736
 737         for (i = 0; i < sw->port_count; i++)
 738                 sw_port_release(&sw->ports[i]);
 739         sw->port_count = 0;
 740
 741         memset(&sw->stats, 0, sizeof(sw->stats));
 742         sw->sched_called = 0;
 743         sw->sched_no_iq_enqueues = 0;
 744         sw->sched_no_cq_enqueues = 0;
 745         sw->sched_cq_qid_called = 0;
 746
 747         return 0;
 748 }
 749
 750 static int
 751 assign_numa_node(const char *key __rte_unused, const char *value, void *opaque)
 752 {
 753         int *socket_id = opaque;
 754         *socket_id = atoi(value);
 755         if (*socket_id >= RTE_MAX_NUMA_NODES)
 756                 return -1;
 757         return 0;
 758 }
 759
 760 static int
 761 set_sched_quanta(const char *key __rte_unused, const char *value, void *opaque)
 762 {
 763         int *quanta = opaque;
 764         *quanta = atoi(value);
 765         if (*quanta < 0 || *quanta >= 4096)
 766                 return -1;
 767         return 0;
 768 }
 769
 770 static int
 771 set_credit_quanta(const char *key __rte_unused, const char *value, void *opaque)
 772 {
 773         int *credit = opaque;
 774         *credit = atoi(value);
 775         if (*credit < 0 || *credit >= 128)
 776                 return -1;
 777         return 0;
 778 }
 779
 780
 781 static int32_t sw_sched_service_func(void *args)
 782 {
 783         struct rte_eventdev *dev = args;
 784         sw_event_schedule(dev);
 785         return 0;
 786 }
 787
 788 static int
 789 sw_probe(struct rte_vdev_device *vdev)
 790 {
 791         static struct rte_eventdev_ops evdev_sw_ops = {
 792                         .dev_configure = sw_dev_configure,
 793                         .dev_infos_get = sw_info_get,
 794                         .dev_close = sw_close,
 795                         .dev_start = sw_start,
 796                         .dev_stop = sw_stop,
 797                         .dump = sw_dump,
 798
 799                         .queue_def_conf = sw_queue_def_conf,
 800                         .queue_setup = sw_queue_setup,
 801                         .queue_release = sw_queue_release,
 802                         .port_def_conf = sw_port_def_conf,
 803                         .port_setup = sw_port_setup,
 804                         .port_release = sw_port_release,
 805                         .port_link = sw_port_link,
 806                         .port_unlink = sw_port_unlink,
 807
 808                         .eth_rx_adapter_caps_get = sw_eth_rx_adapter_caps_get,
 809
 810                         .timer_adapter_caps_get = sw_timer_adapter_caps_get,
 811
 812                         .xstats_get = sw_xstats_get,
 813                         .xstats_get_names = sw_xstats_get_names,
 814                         .xstats_get_by_name = sw_xstats_get_by_name,
 815                         .xstats_reset = sw_xstats_reset,
 816
 817                         .dev_selftest = test_sw_eventdev,
 818         };
 819
 820         static const char *const args[] = {
 821                 NUMA_NODE_ARG,
 822                 SCHED_QUANTA_ARG,
 823                 CREDIT_QUANTA_ARG,
 824                 NULL
 825         };
 826         const char *name;
 827         const char *params;
 828         struct rte_eventdev *dev;
 829         struct sw_evdev *sw;
 830         int socket_id = rte_socket_id();
 831         int sched_quanta  = SW_DEFAULT_SCHED_QUANTA;
 832         int credit_quanta = SW_DEFAULT_CREDIT_QUANTA;
 833
 834         name = rte_vdev_device_name(vdev);
 835         params = rte_vdev_device_args(vdev);
 836         if (params != NULL && params[0] != '\0') {
 837                 struct rte_kvargs *kvlist = rte_kvargs_parse(params, args);
 838
 839                 if (!kvlist) {
 840                         SW_LOG_INFO(
 841                                 "Ignoring unsupported parameters when creating device '%s'\n",
 842                                 name);
 843                 } else {
 844                         int ret = rte_kvargs_process(kvlist, NUMA_NODE_ARG,
 845                                         assign_numa_node, &socket_id);
 846                         if (ret != 0) {
 847                                 SW_LOG_ERR(
 848                                         "%s: Error parsing numa node parameter",
 849                                         name);
 850                                 rte_kvargs_free(kvlist);
 851                                 return ret;
 852                         }
 853
 854                         ret = rte_kvargs_process(kvlist, SCHED_QUANTA_ARG,
 855                                         set_sched_quanta, &sched_quanta);
 856                         if (ret != 0) {
 857                                 SW_LOG_ERR(
 858                                         "%s: Error parsing sched quanta parameter",
 859                                         name);
 860                                 rte_kvargs_free(kvlist);
 861                                 return ret;
 862                         }
 863
 864                         ret = rte_kvargs_process(kvlist, CREDIT_QUANTA_ARG,
 865                                         set_credit_quanta, &credit_quanta);
 866                         if (ret != 0) {
 867                                 SW_LOG_ERR(
 868                                         "%s: Error parsing credit quanta parameter",
 869                                         name);
 870                                 rte_kvargs_free(kvlist);
 871                                 return ret;
 872                         }
 873
 874                         rte_kvargs_free(kvlist);
 875                 }
 876         }
 877
 878         SW_LOG_INFO(
 879                         "Creating eventdev sw device %s, numa_node=%d, sched_quanta=%d, credit_quanta=%d\n",
 880                         name, socket_id, sched_quanta, credit_quanta);
 881
 882         dev = rte_event_pmd_vdev_init(name,
 883                         sizeof(struct sw_evdev), socket_id);
 884         if (dev == NULL) {
 885                 SW_LOG_ERR("eventdev vdev init() failed");
 886                 return -EFAULT;
 887         }
 888         dev->dev_ops = &evdev_sw_ops;
 889         dev->enqueue = sw_event_enqueue;
 890         dev->enqueue_burst = sw_event_enqueue_burst;
 891         dev->enqueue_new_burst = sw_event_enqueue_burst;
 892         dev->enqueue_forward_burst = sw_event_enqueue_burst;
 893         dev->dequeue = sw_event_dequeue;
 894         dev->dequeue_burst = sw_event_dequeue_burst;
 895
 896         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 897                 return 0;
 898
 899         sw = dev->data->dev_private;
 900         sw->data = dev->data;
 901
 902         /* copy values passed from vdev command line to instance */
 903         sw->credit_update_quanta = credit_quanta;
 904         sw->sched_quanta = sched_quanta;
 905
 906         /* register service with EAL */
 907         struct rte_service_spec service;
 908         memset(&service, 0, sizeof(struct rte_service_spec));
 909         snprintf(service.name, sizeof(service.name), "%s_service", name);
 910         snprintf(sw->service_name, sizeof(sw->service_name), "%s_service",
 911                         name);
 912         service.socket_id = socket_id;
 913         service.callback = sw_sched_service_func;
 914         service.callback_userdata = (void *)dev;
 915
 916         int32_t ret = rte_service_component_register(&service, &sw->service_id);
 917         if (ret) {
 918                 SW_LOG_ERR("service register() failed");
 919                 return -ENOEXEC;
 920         }
 921
 922         dev->data->service_inited = 1;
 923         dev->data->service_id = sw->service_id;
 924
 925         return 0;
 926 }
 927
 928 static int
 929 sw_remove(struct rte_vdev_device *vdev)
 930 {
 931         const char *name;
 932
 933         name = rte_vdev_device_name(vdev);
 934         if (name == NULL)
 935                 return -EINVAL;
 936
 937         SW_LOG_INFO("Closing eventdev sw device %s\n", name);
 938
 939         return rte_event_pmd_vdev_uninit(name);
 940 }
 941
 942 static struct rte_vdev_driver evdev_sw_pmd_drv = {
 943         .probe = sw_probe,
 944         .remove = sw_remove
 945 };
 946
 947 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_SW_PMD, evdev_sw_pmd_drv);
 948 RTE_PMD_REGISTER_PARAM_STRING(event_sw, NUMA_NODE_ARG "=<int> "
 949                 SCHED_QUANTA_ARG "=<int>" CREDIT_QUANTA_ARG "=<int>");
 950
 951 /* declared extern in header, for access from other .c files */
 952 int eventdev_sw_log_level;
 953
 954 RTE_INIT(evdev_sw_init_log);
 955 static void
 956 evdev_sw_init_log(void)
 957 {
 958         eventdev_sw_log_level = rte_log_register("pmd.event.sw");
 959         if (eventdev_sw_log_level >= 0)
 960                 rte_log_set_level(eventdev_sw_log_level, RTE_LOG_NOTICE);
 961 }