lib/librte_eventdev/rte_eventdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016 Cavium, Inc
   3  */
   4
   5 #include <ctype.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <stdarg.h>
  10 #include <errno.h>
  11 #include <stdint.h>
  12 #include <inttypes.h>
  13 #include <sys/types.h>
  14 #include <sys/queue.h>
  15
  16 #include <rte_byteorder.h>
  17 #include <rte_log.h>
  18 #include <rte_debug.h>
  19 #include <rte_dev.h>
  20 #include <rte_memory.h>
  21 #include <rte_memcpy.h>
  22 #include <rte_memzone.h>
  23 #include <rte_eal.h>
  24 #include <rte_per_lcore.h>
  25 #include <rte_lcore.h>
  26 #include <rte_atomic.h>
  27 #include <rte_branch_prediction.h>
  28 #include <rte_common.h>
  29 #include <rte_malloc.h>
  30 #include <rte_errno.h>
  31 #include <rte_ethdev.h>
  32
  33 #include "rte_eventdev.h"
  34 #include "rte_eventdev_pmd.h"
  35
  36 struct rte_eventdev rte_event_devices[RTE_EVENT_MAX_DEVS];
  37
  38 struct rte_eventdev *rte_eventdevs = &rte_event_devices[0];
  39
  40 static struct rte_eventdev_global eventdev_globals = {
  41         .nb_devs                = 0
  42 };
  43
  44 struct rte_eventdev_global *rte_eventdev_globals = &eventdev_globals;
  45
  46 /* Event dev north bound API implementation */
  47
  48 uint8_t
  49 rte_event_dev_count(void)
  50 {
  51         return rte_eventdev_globals->nb_devs;
  52 }
  53
  54 int
  55 rte_event_dev_get_dev_id(const char *name)
  56 {
  57         int i;
  58
  59         if (!name)
  60                 return -EINVAL;
  61
  62         for (i = 0; i < rte_eventdev_globals->nb_devs; i++)
  63                 if ((strcmp(rte_event_devices[i].data->name, name)
  64                                 == 0) &&
  65                                 (rte_event_devices[i].attached ==
  66                                                 RTE_EVENTDEV_ATTACHED))
  67                         return i;
  68         return -ENODEV;
  69 }
  70
  71 int
  72 rte_event_dev_socket_id(uint8_t dev_id)
  73 {
  74         struct rte_eventdev *dev;
  75
  76         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
  77         dev = &rte_eventdevs[dev_id];
  78
  79         return dev->data->socket_id;
  80 }
  81
  82 int
  83 rte_event_dev_info_get(uint8_t dev_id, struct rte_event_dev_info *dev_info)
  84 {
  85         struct rte_eventdev *dev;
  86
  87         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
  88         dev = &rte_eventdevs[dev_id];
  89
  90         if (dev_info == NULL)
  91                 return -EINVAL;
  92
  93         memset(dev_info, 0, sizeof(struct rte_event_dev_info));
  94
  95         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
  96         (*dev->dev_ops->dev_infos_get)(dev, dev_info);
  97
  98         dev_info->dequeue_timeout_ns = dev->data->dev_conf.dequeue_timeout_ns;
  99
 100         dev_info->dev = dev->dev;
 101         return 0;
 102 }
 103
 104 int
 105 rte_event_eth_rx_adapter_caps_get(uint8_t dev_id, uint8_t eth_port_id,
 106                                 uint32_t *caps)
 107 {
 108         struct rte_eventdev *dev;
 109
 110         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 111         RTE_ETH_VALID_PORTID_OR_ERR_RET(eth_port_id, -EINVAL);
 112
 113         dev = &rte_eventdevs[dev_id];
 114
 115         if (caps == NULL)
 116                 return -EINVAL;
 117         *caps = 0;
 118
 119         return dev->dev_ops->eth_rx_adapter_caps_get ?
 120                                 (*dev->dev_ops->eth_rx_adapter_caps_get)(dev,
 121                                                 &rte_eth_devices[eth_port_id],
 122                                                 caps)
 123                                 : 0;
 124 }
 125
 126 static inline int
 127 rte_event_dev_queue_config(struct rte_eventdev *dev, uint8_t nb_queues)
 128 {
 129         uint8_t old_nb_queues = dev->data->nb_queues;
 130         struct rte_event_queue_conf *queues_cfg;
 131         unsigned int i;
 132
 133         RTE_EDEV_LOG_DEBUG("Setup %d queues on device %u", nb_queues,
 134                          dev->data->dev_id);
 135
 136         /* First time configuration */
 137         if (dev->data->queues_cfg == NULL && nb_queues != 0) {
 138                 /* Allocate memory to store queue configuration */
 139                 dev->data->queues_cfg = rte_zmalloc_socket(
 140                                 "eventdev->data->queues_cfg",
 141                                 sizeof(dev->data->queues_cfg[0]) * nb_queues,
 142                                 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 143                 if (dev->data->queues_cfg == NULL) {
 144                         dev->data->nb_queues = 0;
 145                         RTE_EDEV_LOG_ERR("failed to get mem for queue cfg,"
 146                                         "nb_queues %u", nb_queues);
 147                         return -(ENOMEM);
 148                 }
 149         /* Re-configure */
 150         } else if (dev->data->queues_cfg != NULL && nb_queues != 0) {
 151                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_release, -ENOTSUP);
 152
 153                 for (i = nb_queues; i < old_nb_queues; i++)
 154                         (*dev->dev_ops->queue_release)(dev, i);
 155
 156                 /* Re allocate memory to store queue configuration */
 157                 queues_cfg = dev->data->queues_cfg;
 158                 queues_cfg = rte_realloc(queues_cfg,
 159                                 sizeof(queues_cfg[0]) * nb_queues,
 160                                 RTE_CACHE_LINE_SIZE);
 161                 if (queues_cfg == NULL) {
 162                         RTE_EDEV_LOG_ERR("failed to realloc queue cfg memory,"
 163                                                 " nb_queues %u", nb_queues);
 164                         return -(ENOMEM);
 165                 }
 166                 dev->data->queues_cfg = queues_cfg;
 167
 168                 if (nb_queues > old_nb_queues) {
 169                         uint8_t new_qs = nb_queues - old_nb_queues;
 170
 171                         memset(queues_cfg + old_nb_queues, 0,
 172                                 sizeof(queues_cfg[0]) * new_qs);
 173                 }
 174         } else if (dev->data->queues_cfg != NULL && nb_queues == 0) {
 175                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_release, -ENOTSUP);
 176
 177                 for (i = nb_queues; i < old_nb_queues; i++)
 178                         (*dev->dev_ops->queue_release)(dev, i);
 179         }
 180
 181         dev->data->nb_queues = nb_queues;
 182         return 0;
 183 }
 184
 185 #define EVENT_QUEUE_SERVICE_PRIORITY_INVALID (0xdead)
 186
 187 static inline int
 188 rte_event_dev_port_config(struct rte_eventdev *dev, uint8_t nb_ports)
 189 {
 190         uint8_t old_nb_ports = dev->data->nb_ports;
 191         void **ports;
 192         uint16_t *links_map;
 193         struct rte_event_port_conf *ports_cfg;
 194         unsigned int i;
 195
 196         RTE_EDEV_LOG_DEBUG("Setup %d ports on device %u", nb_ports,
 197                          dev->data->dev_id);
 198
 199         /* First time configuration */
 200         if (dev->data->ports == NULL && nb_ports != 0) {
 201                 dev->data->ports = rte_zmalloc_socket("eventdev->data->ports",
 202                                 sizeof(dev->data->ports[0]) * nb_ports,
 203                                 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 204                 if (dev->data->ports == NULL) {
 205                         dev->data->nb_ports = 0;
 206                         RTE_EDEV_LOG_ERR("failed to get mem for port meta data,"
 207                                         "nb_ports %u", nb_ports);
 208                         return -(ENOMEM);
 209                 }
 210
 211                 /* Allocate memory to store port configurations */
 212                 dev->data->ports_cfg =
 213                         rte_zmalloc_socket("eventdev->ports_cfg",
 214                         sizeof(dev->data->ports_cfg[0]) * nb_ports,
 215                         RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 216                 if (dev->data->ports_cfg == NULL) {
 217                         dev->data->nb_ports = 0;
 218                         RTE_EDEV_LOG_ERR("failed to get mem for port cfg,"
 219                                         "nb_ports %u", nb_ports);
 220                         return -(ENOMEM);
 221                 }
 222
 223                 /* Allocate memory to store queue to port link connection */
 224                 dev->data->links_map =
 225                         rte_zmalloc_socket("eventdev->links_map",
 226                         sizeof(dev->data->links_map[0]) * nb_ports *
 227                         RTE_EVENT_MAX_QUEUES_PER_DEV,
 228                         RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 229                 if (dev->data->links_map == NULL) {
 230                         dev->data->nb_ports = 0;
 231                         RTE_EDEV_LOG_ERR("failed to get mem for port_map area,"
 232                                         "nb_ports %u", nb_ports);
 233                         return -(ENOMEM);
 234                 }
 235                 for (i = 0; i < nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV; i++)
 236                         dev->data->links_map[i] =
 237                                 EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
 238         } else if (dev->data->ports != NULL && nb_ports != 0) {/* re-config */
 239                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_release, -ENOTSUP);
 240
 241                 ports = dev->data->ports;
 242                 ports_cfg = dev->data->ports_cfg;
 243                 links_map = dev->data->links_map;
 244
 245                 for (i = nb_ports; i < old_nb_ports; i++)
 246                         (*dev->dev_ops->port_release)(ports[i]);
 247
 248                 /* Realloc memory for ports */
 249                 ports = rte_realloc(ports, sizeof(ports[0]) * nb_ports,
 250                                 RTE_CACHE_LINE_SIZE);
 251                 if (ports == NULL) {
 252                         RTE_EDEV_LOG_ERR("failed to realloc port meta data,"
 253                                                 " nb_ports %u", nb_ports);
 254                         return -(ENOMEM);
 255                 }
 256
 257                 /* Realloc memory for ports_cfg */
 258                 ports_cfg = rte_realloc(ports_cfg,
 259                         sizeof(ports_cfg[0]) * nb_ports,
 260                         RTE_CACHE_LINE_SIZE);
 261                 if (ports_cfg == NULL) {
 262                         RTE_EDEV_LOG_ERR("failed to realloc port cfg mem,"
 263                                                 " nb_ports %u", nb_ports);
 264                         return -(ENOMEM);
 265                 }
 266
 267                 /* Realloc memory to store queue to port link connection */
 268                 links_map = rte_realloc(links_map,
 269                         sizeof(dev->data->links_map[0]) * nb_ports *
 270                         RTE_EVENT_MAX_QUEUES_PER_DEV,
 271                         RTE_CACHE_LINE_SIZE);
 272                 if (links_map == NULL) {
 273                         dev->data->nb_ports = 0;
 274                         RTE_EDEV_LOG_ERR("failed to realloc mem for port_map,"
 275                                         "nb_ports %u", nb_ports);
 276                         return -(ENOMEM);
 277                 }
 278
 279                 if (nb_ports > old_nb_ports) {
 280                         uint8_t new_ps = nb_ports - old_nb_ports;
 281                         unsigned int old_links_map_end =
 282                                 old_nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV;
 283                         unsigned int links_map_end =
 284                                 nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV;
 285
 286                         memset(ports + old_nb_ports, 0,
 287                                 sizeof(ports[0]) * new_ps);
 288                         memset(ports_cfg + old_nb_ports, 0,
 289                                 sizeof(ports_cfg[0]) * new_ps);
 290                         for (i = old_links_map_end; i < links_map_end; i++)
 291                                 links_map[i] =
 292                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
 293                 }
 294
 295                 dev->data->ports = ports;
 296                 dev->data->ports_cfg = ports_cfg;
 297                 dev->data->links_map = links_map;
 298         } else if (dev->data->ports != NULL && nb_ports == 0) {
 299                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_release, -ENOTSUP);
 300
 301                 ports = dev->data->ports;
 302                 for (i = nb_ports; i < old_nb_ports; i++)
 303                         (*dev->dev_ops->port_release)(ports[i]);
 304         }
 305
 306         dev->data->nb_ports = nb_ports;
 307         return 0;
 308 }
 309
 310 int
 311 rte_event_dev_configure(uint8_t dev_id,
 312                         const struct rte_event_dev_config *dev_conf)
 313 {
 314         struct rte_eventdev *dev;
 315         struct rte_event_dev_info info;
 316         int diag;
 317
 318         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 319         dev = &rte_eventdevs[dev_id];
 320
 321         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
 322         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
 323
 324         if (dev->data->dev_started) {
 325                 RTE_EDEV_LOG_ERR(
 326                     "device %d must be stopped to allow configuration", dev_id);
 327                 return -EBUSY;
 328         }
 329
 330         if (dev_conf == NULL)
 331                 return -EINVAL;
 332
 333         (*dev->dev_ops->dev_infos_get)(dev, &info);
 334
 335         /* Check dequeue_timeout_ns value is in limit */
 336         if (!(dev_conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT)) {
 337                 if (dev_conf->dequeue_timeout_ns &&
 338                     (dev_conf->dequeue_timeout_ns < info.min_dequeue_timeout_ns
 339                         || dev_conf->dequeue_timeout_ns >
 340                                  info.max_dequeue_timeout_ns)) {
 341                         RTE_EDEV_LOG_ERR("dev%d invalid dequeue_timeout_ns=%d"
 342                         " min_dequeue_timeout_ns=%d max_dequeue_timeout_ns=%d",
 343                         dev_id, dev_conf->dequeue_timeout_ns,
 344                         info.min_dequeue_timeout_ns,
 345                         info.max_dequeue_timeout_ns);
 346                         return -EINVAL;
 347                 }
 348         }
 349
 350         /* Check nb_events_limit is in limit */
 351         if (dev_conf->nb_events_limit > info.max_num_events) {
 352                 RTE_EDEV_LOG_ERR("dev%d nb_events_limit=%d > max_num_events=%d",
 353                 dev_id, dev_conf->nb_events_limit, info.max_num_events);
 354                 return -EINVAL;
 355         }
 356
 357         /* Check nb_event_queues is in limit */
 358         if (!dev_conf->nb_event_queues) {
 359                 RTE_EDEV_LOG_ERR("dev%d nb_event_queues cannot be zero",
 360                                         dev_id);
 361                 return -EINVAL;
 362         }
 363         if (dev_conf->nb_event_queues > info.max_event_queues) {
 364                 RTE_EDEV_LOG_ERR("%d nb_event_queues=%d > max_event_queues=%d",
 365                 dev_id, dev_conf->nb_event_queues, info.max_event_queues);
 366                 return -EINVAL;
 367         }
 368
 369         /* Check nb_event_ports is in limit */
 370         if (!dev_conf->nb_event_ports) {
 371                 RTE_EDEV_LOG_ERR("dev%d nb_event_ports cannot be zero", dev_id);
 372                 return -EINVAL;
 373         }
 374         if (dev_conf->nb_event_ports > info.max_event_ports) {
 375                 RTE_EDEV_LOG_ERR("id%d nb_event_ports=%d > max_event_ports= %d",
 376                 dev_id, dev_conf->nb_event_ports, info.max_event_ports);
 377                 return -EINVAL;
 378         }
 379
 380         /* Check nb_event_queue_flows is in limit */
 381         if (!dev_conf->nb_event_queue_flows) {
 382                 RTE_EDEV_LOG_ERR("dev%d nb_flows cannot be zero", dev_id);
 383                 return -EINVAL;
 384         }
 385         if (dev_conf->nb_event_queue_flows > info.max_event_queue_flows) {
 386                 RTE_EDEV_LOG_ERR("dev%d nb_flows=%x > max_flows=%x",
 387                 dev_id, dev_conf->nb_event_queue_flows,
 388                 info.max_event_queue_flows);
 389                 return -EINVAL;
 390         }
 391
 392         /* Check nb_event_port_dequeue_depth is in limit */
 393         if (!dev_conf->nb_event_port_dequeue_depth) {
 394                 RTE_EDEV_LOG_ERR("dev%d nb_dequeue_depth cannot be zero",
 395                                         dev_id);
 396                 return -EINVAL;
 397         }
 398         if ((info.event_dev_cap & RTE_EVENT_DEV_CAP_BURST_MODE) &&
 399                  (dev_conf->nb_event_port_dequeue_depth >
 400                          info.max_event_port_dequeue_depth)) {
 401                 RTE_EDEV_LOG_ERR("dev%d nb_dq_depth=%d > max_dq_depth=%d",
 402                 dev_id, dev_conf->nb_event_port_dequeue_depth,
 403                 info.max_event_port_dequeue_depth);
 404                 return -EINVAL;
 405         }
 406
 407         /* Check nb_event_port_enqueue_depth is in limit */
 408         if (!dev_conf->nb_event_port_enqueue_depth) {
 409                 RTE_EDEV_LOG_ERR("dev%d nb_enqueue_depth cannot be zero",
 410                                         dev_id);
 411                 return -EINVAL;
 412         }
 413         if ((info.event_dev_cap & RTE_EVENT_DEV_CAP_BURST_MODE) &&
 414                 (dev_conf->nb_event_port_enqueue_depth >
 415                          info.max_event_port_enqueue_depth)) {
 416                 RTE_EDEV_LOG_ERR("dev%d nb_enq_depth=%d > max_enq_depth=%d",
 417                 dev_id, dev_conf->nb_event_port_enqueue_depth,
 418                 info.max_event_port_enqueue_depth);
 419                 return -EINVAL;
 420         }
 421
 422         /* Copy the dev_conf parameter into the dev structure */
 423         memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
 424
 425         /* Setup new number of queues and reconfigure device. */
 426         diag = rte_event_dev_queue_config(dev, dev_conf->nb_event_queues);
 427         if (diag != 0) {
 428                 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_queue_config = %d",
 429                                 dev_id, diag);
 430                 return diag;
 431         }
 432
 433         /* Setup new number of ports and reconfigure device. */
 434         diag = rte_event_dev_port_config(dev, dev_conf->nb_event_ports);
 435         if (diag != 0) {
 436                 rte_event_dev_queue_config(dev, 0);
 437                 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_port_config = %d",
 438                                 dev_id, diag);
 439                 return diag;
 440         }
 441
 442         /* Configure the device */
 443         diag = (*dev->dev_ops->dev_configure)(dev);
 444         if (diag != 0) {
 445                 RTE_EDEV_LOG_ERR("dev%d dev_configure = %d", dev_id, diag);
 446                 rte_event_dev_queue_config(dev, 0);
 447                 rte_event_dev_port_config(dev, 0);
 448         }
 449
 450         dev->data->event_dev_cap = info.event_dev_cap;
 451         return diag;
 452 }
 453
 454 static inline int
 455 is_valid_queue(struct rte_eventdev *dev, uint8_t queue_id)
 456 {
 457         if (queue_id < dev->data->nb_queues && queue_id <
 458                                 RTE_EVENT_MAX_QUEUES_PER_DEV)
 459                 return 1;
 460         else
 461                 return 0;
 462 }
 463
 464 int
 465 rte_event_queue_default_conf_get(uint8_t dev_id, uint8_t queue_id,
 466                                  struct rte_event_queue_conf *queue_conf)
 467 {
 468         struct rte_eventdev *dev;
 469
 470         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 471         dev = &rte_eventdevs[dev_id];
 472
 473         if (queue_conf == NULL)
 474                 return -EINVAL;
 475
 476         if (!is_valid_queue(dev, queue_id)) {
 477                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 478                 return -EINVAL;
 479         }
 480
 481         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf, -ENOTSUP);
 482         memset(queue_conf, 0, sizeof(struct rte_event_queue_conf));
 483         (*dev->dev_ops->queue_def_conf)(dev, queue_id, queue_conf);
 484         return 0;
 485 }
 486
 487 static inline int
 488 is_valid_atomic_queue_conf(const struct rte_event_queue_conf *queue_conf)
 489 {
 490         if (queue_conf &&
 491                 !(queue_conf->event_queue_cfg &
 492                   RTE_EVENT_QUEUE_CFG_SINGLE_LINK) &&
 493                 ((queue_conf->event_queue_cfg &
 494                          RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 495                 (queue_conf->schedule_type
 496                         == RTE_SCHED_TYPE_ATOMIC)
 497                 ))
 498                 return 1;
 499         else
 500                 return 0;
 501 }
 502
 503 static inline int
 504 is_valid_ordered_queue_conf(const struct rte_event_queue_conf *queue_conf)
 505 {
 506         if (queue_conf &&
 507                 !(queue_conf->event_queue_cfg &
 508                   RTE_EVENT_QUEUE_CFG_SINGLE_LINK) &&
 509                 ((queue_conf->event_queue_cfg &
 510                          RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 511                 (queue_conf->schedule_type
 512                         == RTE_SCHED_TYPE_ORDERED)
 513                 ))
 514                 return 1;
 515         else
 516                 return 0;
 517 }
 518
 519
 520 int
 521 rte_event_queue_setup(uint8_t dev_id, uint8_t queue_id,
 522                       const struct rte_event_queue_conf *queue_conf)
 523 {
 524         struct rte_eventdev *dev;
 525         struct rte_event_queue_conf def_conf;
 526
 527         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 528         dev = &rte_eventdevs[dev_id];
 529
 530         if (!is_valid_queue(dev, queue_id)) {
 531                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 532                 return -EINVAL;
 533         }
 534
 535         /* Check nb_atomic_flows limit */
 536         if (is_valid_atomic_queue_conf(queue_conf)) {
 537                 if (queue_conf->nb_atomic_flows == 0 ||
 538                     queue_conf->nb_atomic_flows >
 539                         dev->data->dev_conf.nb_event_queue_flows) {
 540                         RTE_EDEV_LOG_ERR(
 541                 "dev%d queue%d Invalid nb_atomic_flows=%d max_flows=%d",
 542                         dev_id, queue_id, queue_conf->nb_atomic_flows,
 543                         dev->data->dev_conf.nb_event_queue_flows);
 544                         return -EINVAL;
 545                 }
 546         }
 547
 548         /* Check nb_atomic_order_sequences limit */
 549         if (is_valid_ordered_queue_conf(queue_conf)) {
 550                 if (queue_conf->nb_atomic_order_sequences == 0 ||
 551                     queue_conf->nb_atomic_order_sequences >
 552                         dev->data->dev_conf.nb_event_queue_flows) {
 553                         RTE_EDEV_LOG_ERR(
 554                 "dev%d queue%d Invalid nb_atomic_order_seq=%d max_flows=%d",
 555                         dev_id, queue_id, queue_conf->nb_atomic_order_sequences,
 556                         dev->data->dev_conf.nb_event_queue_flows);
 557                         return -EINVAL;
 558                 }
 559         }
 560
 561         if (dev->data->dev_started) {
 562                 RTE_EDEV_LOG_ERR(
 563                     "device %d must be stopped to allow queue setup", dev_id);
 564                 return -EBUSY;
 565         }
 566
 567         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_setup, -ENOTSUP);
 568
 569         if (queue_conf == NULL) {
 570                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf,
 571                                         -ENOTSUP);
 572                 (*dev->dev_ops->queue_def_conf)(dev, queue_id, &def_conf);
 573                 queue_conf = &def_conf;
 574         }
 575
 576         dev->data->queues_cfg[queue_id] = *queue_conf;
 577         return (*dev->dev_ops->queue_setup)(dev, queue_id, queue_conf);
 578 }
 579
 580 static inline int
 581 is_valid_port(struct rte_eventdev *dev, uint8_t port_id)
 582 {
 583         if (port_id < dev->data->nb_ports)
 584                 return 1;
 585         else
 586                 return 0;
 587 }
 588
 589 int
 590 rte_event_port_default_conf_get(uint8_t dev_id, uint8_t port_id,
 591                                  struct rte_event_port_conf *port_conf)
 592 {
 593         struct rte_eventdev *dev;
 594
 595         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 596         dev = &rte_eventdevs[dev_id];
 597
 598         if (port_conf == NULL)
 599                 return -EINVAL;
 600
 601         if (!is_valid_port(dev, port_id)) {
 602                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 603                 return -EINVAL;
 604         }
 605
 606         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf, -ENOTSUP);
 607         memset(port_conf, 0, sizeof(struct rte_event_port_conf));
 608         (*dev->dev_ops->port_def_conf)(dev, port_id, port_conf);
 609         return 0;
 610 }
 611
 612 int
 613 rte_event_port_setup(uint8_t dev_id, uint8_t port_id,
 614                      const struct rte_event_port_conf *port_conf)
 615 {
 616         struct rte_eventdev *dev;
 617         struct rte_event_port_conf def_conf;
 618         int diag;
 619
 620         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 621         dev = &rte_eventdevs[dev_id];
 622
 623         if (!is_valid_port(dev, port_id)) {
 624                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 625                 return -EINVAL;
 626         }
 627
 628         /* Check new_event_threshold limit */
 629         if ((port_conf && !port_conf->new_event_threshold) ||
 630                         (port_conf && port_conf->new_event_threshold >
 631                                  dev->data->dev_conf.nb_events_limit)) {
 632                 RTE_EDEV_LOG_ERR(
 633                    "dev%d port%d Invalid event_threshold=%d nb_events_limit=%d",
 634                         dev_id, port_id, port_conf->new_event_threshold,
 635                         dev->data->dev_conf.nb_events_limit);
 636                 return -EINVAL;
 637         }
 638
 639         /* Check dequeue_depth limit */
 640         if ((port_conf && !port_conf->dequeue_depth) ||
 641                         (port_conf && port_conf->dequeue_depth >
 642                 dev->data->dev_conf.nb_event_port_dequeue_depth)) {
 643                 RTE_EDEV_LOG_ERR(
 644                    "dev%d port%d Invalid dequeue depth=%d max_dequeue_depth=%d",
 645                         dev_id, port_id, port_conf->dequeue_depth,
 646                         dev->data->dev_conf.nb_event_port_dequeue_depth);
 647                 return -EINVAL;
 648         }
 649
 650         /* Check enqueue_depth limit */
 651         if ((port_conf && !port_conf->enqueue_depth) ||
 652                         (port_conf && port_conf->enqueue_depth >
 653                 dev->data->dev_conf.nb_event_port_enqueue_depth)) {
 654                 RTE_EDEV_LOG_ERR(
 655                    "dev%d port%d Invalid enqueue depth=%d max_enqueue_depth=%d",
 656                         dev_id, port_id, port_conf->enqueue_depth,
 657                         dev->data->dev_conf.nb_event_port_enqueue_depth);
 658                 return -EINVAL;
 659         }
 660
 661         if (port_conf && port_conf->disable_implicit_release &&
 662             !(dev->data->event_dev_cap &
 663               RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE)) {
 664                 RTE_EDEV_LOG_ERR(
 665                    "dev%d port%d Implicit release disable not supported",
 666                         dev_id, port_id);
 667                 return -EINVAL;
 668         }
 669
 670         if (dev->data->dev_started) {
 671                 RTE_EDEV_LOG_ERR(
 672                     "device %d must be stopped to allow port setup", dev_id);
 673                 return -EBUSY;
 674         }
 675
 676         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_setup, -ENOTSUP);
 677
 678         if (port_conf == NULL) {
 679                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf,
 680                                         -ENOTSUP);
 681                 (*dev->dev_ops->port_def_conf)(dev, port_id, &def_conf);
 682                 port_conf = &def_conf;
 683         }
 684
 685         dev->data->ports_cfg[port_id] = *port_conf;
 686
 687         diag = (*dev->dev_ops->port_setup)(dev, port_id, port_conf);
 688
 689         /* Unlink all the queues from this port(default state after setup) */
 690         if (!diag)
 691                 diag = rte_event_port_unlink(dev_id, port_id, NULL, 0);
 692
 693         if (diag < 0)
 694                 return diag;
 695
 696         return 0;
 697 }
 698
 699 int
 700 rte_event_dev_attr_get(uint8_t dev_id, uint32_t attr_id,
 701                        uint32_t *attr_value)
 702 {
 703         struct rte_eventdev *dev;
 704
 705         if (!attr_value)
 706                 return -EINVAL;
 707         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 708         dev = &rte_eventdevs[dev_id];
 709
 710         switch (attr_id) {
 711         case RTE_EVENT_DEV_ATTR_PORT_COUNT:
 712                 *attr_value = dev->data->nb_ports;
 713                 break;
 714         case RTE_EVENT_DEV_ATTR_QUEUE_COUNT:
 715                 *attr_value = dev->data->nb_queues;
 716                 break;
 717         case RTE_EVENT_DEV_ATTR_STARTED:
 718                 *attr_value = dev->data->dev_started;
 719                 break;
 720         default:
 721                 return -EINVAL;
 722         }
 723
 724         return 0;
 725 }
 726
 727 int
 728 rte_event_port_attr_get(uint8_t dev_id, uint8_t port_id, uint32_t attr_id,
 729                         uint32_t *attr_value)
 730 {
 731         struct rte_eventdev *dev;
 732
 733         if (!attr_value)
 734                 return -EINVAL;
 735
 736         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 737         dev = &rte_eventdevs[dev_id];
 738         if (!is_valid_port(dev, port_id)) {
 739                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 740                 return -EINVAL;
 741         }
 742
 743         switch (attr_id) {
 744         case RTE_EVENT_PORT_ATTR_ENQ_DEPTH:
 745                 *attr_value = dev->data->ports_cfg[port_id].enqueue_depth;
 746                 break;
 747         case RTE_EVENT_PORT_ATTR_DEQ_DEPTH:
 748                 *attr_value = dev->data->ports_cfg[port_id].dequeue_depth;
 749                 break;
 750         case RTE_EVENT_PORT_ATTR_NEW_EVENT_THRESHOLD:
 751                 *attr_value = dev->data->ports_cfg[port_id].new_event_threshold;
 752                 break;
 753         default:
 754                 return -EINVAL;
 755         };
 756         return 0;
 757 }
 758
 759 int
 760 rte_event_queue_attr_get(uint8_t dev_id, uint8_t queue_id, uint32_t attr_id,
 761                         uint32_t *attr_value)
 762 {
 763         struct rte_event_queue_conf *conf;
 764         struct rte_eventdev *dev;
 765
 766         if (!attr_value)
 767                 return -EINVAL;
 768
 769         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 770         dev = &rte_eventdevs[dev_id];
 771         if (!is_valid_queue(dev, queue_id)) {
 772                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 773                 return -EINVAL;
 774         }
 775
 776         conf = &dev->data->queues_cfg[queue_id];
 777
 778         switch (attr_id) {
 779         case RTE_EVENT_QUEUE_ATTR_PRIORITY:
 780                 *attr_value = RTE_EVENT_DEV_PRIORITY_NORMAL;
 781                 if (dev->data->event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_QOS)
 782                         *attr_value = conf->priority;
 783                 break;
 784         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_FLOWS:
 785                 *attr_value = conf->nb_atomic_flows;
 786                 break;
 787         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_ORDER_SEQUENCES:
 788                 *attr_value = conf->nb_atomic_order_sequences;
 789                 break;
 790         case RTE_EVENT_QUEUE_ATTR_EVENT_QUEUE_CFG:
 791                 *attr_value = conf->event_queue_cfg;
 792                 break;
 793         case RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE:
 794                 if (conf->event_queue_cfg & RTE_EVENT_QUEUE_CFG_ALL_TYPES)
 795                         return -EOVERFLOW;
 796
 797                 *attr_value = conf->schedule_type;
 798                 break;
 799         default:
 800                 return -EINVAL;
 801         };
 802         return 0;
 803 }
 804
 805 int
 806 rte_event_port_link(uint8_t dev_id, uint8_t port_id,
 807                     const uint8_t queues[], const uint8_t priorities[],
 808                     uint16_t nb_links)
 809 {
 810         struct rte_eventdev *dev;
 811         uint8_t queues_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 812         uint8_t priorities_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 813         uint16_t *links_map;
 814         int i, diag;
 815
 816         RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, -EINVAL, 0);
 817         dev = &rte_eventdevs[dev_id];
 818
 819         if (*dev->dev_ops->port_link == NULL) {
 820                 RTE_PMD_DEBUG_TRACE("Function not supported\n");
 821                 rte_errno = -ENOTSUP;
 822                 return 0;
 823         }
 824
 825         if (!is_valid_port(dev, port_id)) {
 826                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 827                 rte_errno = -EINVAL;
 828                 return 0;
 829         }
 830
 831         if (queues == NULL) {
 832                 for (i = 0; i < dev->data->nb_queues; i++)
 833                         queues_list[i] = i;
 834
 835                 queues = queues_list;
 836                 nb_links = dev->data->nb_queues;
 837         }
 838
 839         if (priorities == NULL) {
 840                 for (i = 0; i < nb_links; i++)
 841                         priorities_list[i] = RTE_EVENT_DEV_PRIORITY_NORMAL;
 842
 843                 priorities = priorities_list;
 844         }
 845
 846         for (i = 0; i < nb_links; i++)
 847                 if (queues[i] >= dev->data->nb_queues) {
 848                         rte_errno = -EINVAL;
 849                         return 0;
 850                 }
 851
 852         diag = (*dev->dev_ops->port_link)(dev, dev->data->ports[port_id],
 853                                                 queues, priorities, nb_links);
 854         if (diag < 0)
 855                 return diag;
 856
 857         links_map = dev->data->links_map;
 858         /* Point links_map to this port specific area */
 859         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 860         for (i = 0; i < diag; i++)
 861                 links_map[queues[i]] = (uint8_t)priorities[i];
 862
 863         return diag;
 864 }
 865
 866 int
 867 rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
 868                       uint8_t queues[], uint16_t nb_unlinks)
 869 {
 870         struct rte_eventdev *dev;
 871         uint8_t all_queues[RTE_EVENT_MAX_QUEUES_PER_DEV];
 872         int i, diag, j;
 873         uint16_t *links_map;
 874
 875         RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, -EINVAL, 0);
 876         dev = &rte_eventdevs[dev_id];
 877
 878         if (*dev->dev_ops->port_unlink == NULL) {
 879                 RTE_PMD_DEBUG_TRACE("Function not supported\n");
 880                 rte_errno = -ENOTSUP;
 881                 return 0;
 882         }
 883
 884         if (!is_valid_port(dev, port_id)) {
 885                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 886                 rte_errno = -EINVAL;
 887                 return 0;
 888         }
 889
 890         links_map = dev->data->links_map;
 891         /* Point links_map to this port specific area */
 892         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 893
 894         if (queues == NULL) {
 895                 j = 0;
 896                 for (i = 0; i < dev->data->nb_queues; i++) {
 897                         if (links_map[i] !=
 898                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
 899                                 all_queues[j] = i;
 900                                 j++;
 901                         }
 902                 }
 903                 queues = all_queues;
 904         } else {
 905                 for (j = 0; j < nb_unlinks; j++) {
 906                         if (links_map[queues[j]] ==
 907                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID)
 908                                 break;
 909                 }
 910         }
 911
 912         nb_unlinks = j;
 913         for (i = 0; i < nb_unlinks; i++)
 914                 if (queues[i] >= dev->data->nb_queues) {
 915                         rte_errno = -EINVAL;
 916                         return 0;
 917                 }
 918
 919         diag = (*dev->dev_ops->port_unlink)(dev, dev->data->ports[port_id],
 920                                         queues, nb_unlinks);
 921
 922         if (diag < 0)
 923                 return diag;
 924
 925         for (i = 0; i < diag; i++)
 926                 links_map[queues[i]] = EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
 927
 928         return diag;
 929 }
 930
 931 int
 932 rte_event_port_links_get(uint8_t dev_id, uint8_t port_id,
 933                          uint8_t queues[], uint8_t priorities[])
 934 {
 935         struct rte_eventdev *dev;
 936         uint16_t *links_map;
 937         int i, count = 0;
 938
 939         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 940         dev = &rte_eventdevs[dev_id];
 941         if (!is_valid_port(dev, port_id)) {
 942                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 943                 return -EINVAL;
 944         }
 945
 946         links_map = dev->data->links_map;
 947         /* Point links_map to this port specific area */
 948         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 949         for (i = 0; i < dev->data->nb_queues; i++) {
 950                 if (links_map[i] != EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
 951                         queues[count] = i;
 952                         priorities[count] = (uint8_t)links_map[i];
 953                         ++count;
 954                 }
 955         }
 956         return count;
 957 }
 958
 959 int
 960 rte_event_dequeue_timeout_ticks(uint8_t dev_id, uint64_t ns,
 961                                  uint64_t *timeout_ticks)
 962 {
 963         struct rte_eventdev *dev;
 964
 965         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 966         dev = &rte_eventdevs[dev_id];
 967         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timeout_ticks, -ENOTSUP);
 968
 969         if (timeout_ticks == NULL)
 970                 return -EINVAL;
 971
 972         return (*dev->dev_ops->timeout_ticks)(dev, ns, timeout_ticks);
 973 }
 974
 975 int
 976 rte_event_dev_service_id_get(uint8_t dev_id, uint32_t *service_id)
 977 {
 978         struct rte_eventdev *dev;
 979
 980         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 981         dev = &rte_eventdevs[dev_id];
 982
 983         if (service_id == NULL)
 984                 return -EINVAL;
 985
 986         if (dev->data->service_inited)
 987                 *service_id = dev->data->service_id;
 988
 989         return dev->data->service_inited ? 0 : -ESRCH;
 990 }
 991
 992 int
 993 rte_event_dev_dump(uint8_t dev_id, FILE *f)
 994 {
 995         struct rte_eventdev *dev;
 996
 997         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 998         dev = &rte_eventdevs[dev_id];
 999         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dump, -ENOTSUP);
1000
1001         (*dev->dev_ops->dump)(dev, f);
1002         return 0;
1003
1004 }
1005
1006 static int
1007 xstats_get_count(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
1008                 uint8_t queue_port_id)
1009 {
1010         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1011         if (dev->dev_ops->xstats_get_names != NULL)
1012                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
1013                                                         queue_port_id,
1014                                                         NULL, NULL, 0);
1015         return 0;
1016 }
1017
1018 int
1019 rte_event_dev_xstats_names_get(uint8_t dev_id,
1020                 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
1021                 struct rte_event_dev_xstats_name *xstats_names,
1022                 unsigned int *ids, unsigned int size)
1023 {
1024         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
1025         const int cnt_expected_entries = xstats_get_count(dev_id, mode,
1026                                                           queue_port_id);
1027         if (xstats_names == NULL || cnt_expected_entries < 0 ||
1028                         (int)size < cnt_expected_entries)
1029                 return cnt_expected_entries;
1030
1031         /* dev_id checked above */
1032         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1033
1034         if (dev->dev_ops->xstats_get_names != NULL)
1035                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
1036                                 queue_port_id, xstats_names, ids, size);
1037
1038         return -ENOTSUP;
1039 }
1040
1041 /* retrieve eventdev extended statistics */
1042 int
1043 rte_event_dev_xstats_get(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
1044                 uint8_t queue_port_id, const unsigned int ids[],
1045                 uint64_t values[], unsigned int n)
1046 {
1047         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
1048         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1049
1050         /* implemented by the driver */
1051         if (dev->dev_ops->xstats_get != NULL)
1052                 return (*dev->dev_ops->xstats_get)(dev, mode, queue_port_id,
1053                                 ids, values, n);
1054         return -ENOTSUP;
1055 }
1056
1057 uint64_t
1058 rte_event_dev_xstats_by_name_get(uint8_t dev_id, const char *name,
1059                 unsigned int *id)
1060 {
1061         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, 0);
1062         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1063         unsigned int temp = -1;
1064
1065         if (id != NULL)
1066                 *id = (unsigned int)-1;
1067         else
1068                 id = &temp; /* ensure driver never gets a NULL value */
1069
1070         /* implemented by driver */
1071         if (dev->dev_ops->xstats_get_by_name != NULL)
1072                 return (*dev->dev_ops->xstats_get_by_name)(dev, name, id);
1073         return -ENOTSUP;
1074 }
1075
1076 int rte_event_dev_xstats_reset(uint8_t dev_id,
1077                 enum rte_event_dev_xstats_mode mode, int16_t queue_port_id,
1078                 const uint32_t ids[], uint32_t nb_ids)
1079 {
1080         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1081         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1082
1083         if (dev->dev_ops->xstats_reset != NULL)
1084                 return (*dev->dev_ops->xstats_reset)(dev, mode, queue_port_id,
1085                                                         ids, nb_ids);
1086         return -ENOTSUP;
1087 }
1088
1089 int rte_event_dev_selftest(uint8_t dev_id)
1090 {
1091         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1092         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1093
1094         if (dev->dev_ops->dev_selftest != NULL)
1095                 return (*dev->dev_ops->dev_selftest)();
1096         return -ENOTSUP;
1097 }
1098
1099 int
1100 rte_event_dev_start(uint8_t dev_id)
1101 {
1102         struct rte_eventdev *dev;
1103         int diag;
1104
1105         RTE_EDEV_LOG_DEBUG("Start dev_id=%" PRIu8, dev_id);
1106
1107         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1108         dev = &rte_eventdevs[dev_id];
1109         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
1110
1111         if (dev->data->dev_started != 0) {
1112                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already started",
1113                         dev_id);
1114                 return 0;
1115         }
1116
1117         diag = (*dev->dev_ops->dev_start)(dev);
1118         if (diag == 0)
1119                 dev->data->dev_started = 1;
1120         else
1121                 return diag;
1122
1123         return 0;
1124 }
1125
1126 void
1127 rte_event_dev_stop(uint8_t dev_id)
1128 {
1129         struct rte_eventdev *dev;
1130
1131         RTE_EDEV_LOG_DEBUG("Stop dev_id=%" PRIu8, dev_id);
1132
1133         RTE_EVENTDEV_VALID_DEVID_OR_RET(dev_id);
1134         dev = &rte_eventdevs[dev_id];
1135         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
1136
1137         if (dev->data->dev_started == 0) {
1138                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already stopped",
1139                         dev_id);
1140                 return;
1141         }
1142
1143         dev->data->dev_started = 0;
1144         (*dev->dev_ops->dev_stop)(dev);
1145 }
1146
1147 int
1148 rte_event_dev_close(uint8_t dev_id)
1149 {
1150         struct rte_eventdev *dev;
1151
1152         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1153         dev = &rte_eventdevs[dev_id];
1154         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
1155
1156         /* Device must be stopped before it can be closed */
1157         if (dev->data->dev_started == 1) {
1158                 RTE_EDEV_LOG_ERR("Device %u must be stopped before closing",
1159                                 dev_id);
1160                 return -EBUSY;
1161         }
1162
1163         return (*dev->dev_ops->dev_close)(dev);
1164 }
1165
1166 static inline int
1167 rte_eventdev_data_alloc(uint8_t dev_id, struct rte_eventdev_data **data,
1168                 int socket_id)
1169 {
1170         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1171         const struct rte_memzone *mz;
1172         int n;
1173
1174         /* Generate memzone name */
1175         n = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u", dev_id);
1176         if (n >= (int)sizeof(mz_name))
1177                 return -EINVAL;
1178
1179         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1180                 mz = rte_memzone_reserve(mz_name,
1181                                 sizeof(struct rte_eventdev_data),
1182                                 socket_id, 0);
1183         } else
1184                 mz = rte_memzone_lookup(mz_name);
1185
1186         if (mz == NULL)
1187                 return -ENOMEM;
1188
1189         *data = mz->addr;
1190         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1191                 memset(*data, 0, sizeof(struct rte_eventdev_data));
1192
1193         return 0;
1194 }
1195
1196 static inline uint8_t
1197 rte_eventdev_find_free_device_index(void)
1198 {
1199         uint8_t dev_id;
1200
1201         for (dev_id = 0; dev_id < RTE_EVENT_MAX_DEVS; dev_id++) {
1202                 if (rte_eventdevs[dev_id].attached ==
1203                                 RTE_EVENTDEV_DETACHED)
1204                         return dev_id;
1205         }
1206         return RTE_EVENT_MAX_DEVS;
1207 }
1208
1209 struct rte_eventdev *
1210 rte_event_pmd_allocate(const char *name, int socket_id)
1211 {
1212         struct rte_eventdev *eventdev;
1213         uint8_t dev_id;
1214
1215         if (rte_event_pmd_get_named_dev(name) != NULL) {
1216                 RTE_EDEV_LOG_ERR("Event device with name %s already "
1217                                 "allocated!", name);
1218                 return NULL;
1219         }
1220
1221         dev_id = rte_eventdev_find_free_device_index();
1222         if (dev_id == RTE_EVENT_MAX_DEVS) {
1223                 RTE_EDEV_LOG_ERR("Reached maximum number of event devices");
1224                 return NULL;
1225         }
1226
1227         eventdev = &rte_eventdevs[dev_id];
1228
1229         if (eventdev->data == NULL) {
1230                 struct rte_eventdev_data *eventdev_data = NULL;
1231
1232                 int retval = rte_eventdev_data_alloc(dev_id, &eventdev_data,
1233                                 socket_id);
1234
1235                 if (retval < 0 || eventdev_data == NULL)
1236                         return NULL;
1237
1238                 eventdev->data = eventdev_data;
1239
1240                 snprintf(eventdev->data->name, RTE_EVENTDEV_NAME_MAX_LEN,
1241                                 "%s", name);
1242
1243                 eventdev->data->dev_id = dev_id;
1244                 eventdev->data->socket_id = socket_id;
1245                 eventdev->data->dev_started = 0;
1246
1247                 eventdev->attached = RTE_EVENTDEV_ATTACHED;
1248
1249                 eventdev_globals.nb_devs++;
1250         }
1251
1252         return eventdev;
1253 }
1254
1255 int
1256 rte_event_pmd_release(struct rte_eventdev *eventdev)
1257 {
1258         int ret;
1259         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1260         const struct rte_memzone *mz;
1261
1262         if (eventdev == NULL)
1263                 return -EINVAL;
1264
1265         eventdev->attached = RTE_EVENTDEV_DETACHED;
1266         eventdev_globals.nb_devs--;
1267
1268         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1269                 rte_free(eventdev->data->dev_private);
1270
1271                 /* Generate memzone name */
1272                 ret = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u",
1273                                 eventdev->data->dev_id);
1274                 if (ret >= (int)sizeof(mz_name))
1275                         return -EINVAL;
1276
1277                 mz = rte_memzone_lookup(mz_name);
1278                 if (mz == NULL)
1279                         return -ENOMEM;
1280
1281                 ret = rte_memzone_free(mz);
1282                 if (ret)
1283                         return ret;
1284         }
1285
1286         eventdev->data = NULL;
1287         return 0;
1288 }