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 (dev->data->dev_started) {
 662                 RTE_EDEV_LOG_ERR(
 663                     "device %d must be stopped to allow port setup", dev_id);
 664                 return -EBUSY;
 665         }
 666
 667         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_setup, -ENOTSUP);
 668
 669         if (port_conf == NULL) {
 670                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf,
 671                                         -ENOTSUP);
 672                 (*dev->dev_ops->port_def_conf)(dev, port_id, &def_conf);
 673                 port_conf = &def_conf;
 674         }
 675
 676         dev->data->ports_cfg[port_id] = *port_conf;
 677
 678         diag = (*dev->dev_ops->port_setup)(dev, port_id, port_conf);
 679
 680         /* Unlink all the queues from this port(default state after setup) */
 681         if (!diag)
 682                 diag = rte_event_port_unlink(dev_id, port_id, NULL, 0);
 683
 684         if (diag < 0)
 685                 return diag;
 686
 687         return 0;
 688 }
 689
 690 int
 691 rte_event_dev_attr_get(uint8_t dev_id, uint32_t attr_id,
 692                        uint32_t *attr_value)
 693 {
 694         struct rte_eventdev *dev;
 695
 696         if (!attr_value)
 697                 return -EINVAL;
 698         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 699         dev = &rte_eventdevs[dev_id];
 700
 701         switch (attr_id) {
 702         case RTE_EVENT_DEV_ATTR_PORT_COUNT:
 703                 *attr_value = dev->data->nb_ports;
 704                 break;
 705         case RTE_EVENT_DEV_ATTR_QUEUE_COUNT:
 706                 *attr_value = dev->data->nb_queues;
 707                 break;
 708         case RTE_EVENT_DEV_ATTR_STARTED:
 709                 *attr_value = dev->data->dev_started;
 710                 break;
 711         default:
 712                 return -EINVAL;
 713         }
 714
 715         return 0;
 716 }
 717
 718 int
 719 rte_event_port_attr_get(uint8_t dev_id, uint8_t port_id, uint32_t attr_id,
 720                         uint32_t *attr_value)
 721 {
 722         struct rte_eventdev *dev;
 723
 724         if (!attr_value)
 725                 return -EINVAL;
 726
 727         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 728         dev = &rte_eventdevs[dev_id];
 729         if (!is_valid_port(dev, port_id)) {
 730                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 731                 return -EINVAL;
 732         }
 733
 734         switch (attr_id) {
 735         case RTE_EVENT_PORT_ATTR_ENQ_DEPTH:
 736                 *attr_value = dev->data->ports_cfg[port_id].enqueue_depth;
 737                 break;
 738         case RTE_EVENT_PORT_ATTR_DEQ_DEPTH:
 739                 *attr_value = dev->data->ports_cfg[port_id].dequeue_depth;
 740                 break;
 741         case RTE_EVENT_PORT_ATTR_NEW_EVENT_THRESHOLD:
 742                 *attr_value = dev->data->ports_cfg[port_id].new_event_threshold;
 743                 break;
 744         default:
 745                 return -EINVAL;
 746         };
 747         return 0;
 748 }
 749
 750 int
 751 rte_event_queue_attr_get(uint8_t dev_id, uint8_t queue_id, uint32_t attr_id,
 752                         uint32_t *attr_value)
 753 {
 754         struct rte_event_queue_conf *conf;
 755         struct rte_eventdev *dev;
 756
 757         if (!attr_value)
 758                 return -EINVAL;
 759
 760         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 761         dev = &rte_eventdevs[dev_id];
 762         if (!is_valid_queue(dev, queue_id)) {
 763                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 764                 return -EINVAL;
 765         }
 766
 767         conf = &dev->data->queues_cfg[queue_id];
 768
 769         switch (attr_id) {
 770         case RTE_EVENT_QUEUE_ATTR_PRIORITY:
 771                 *attr_value = RTE_EVENT_DEV_PRIORITY_NORMAL;
 772                 if (dev->data->event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_QOS)
 773                         *attr_value = conf->priority;
 774                 break;
 775         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_FLOWS:
 776                 *attr_value = conf->nb_atomic_flows;
 777                 break;
 778         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_ORDER_SEQUENCES:
 779                 *attr_value = conf->nb_atomic_order_sequences;
 780                 break;
 781         case RTE_EVENT_QUEUE_ATTR_EVENT_QUEUE_CFG:
 782                 *attr_value = conf->event_queue_cfg;
 783                 break;
 784         case RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE:
 785                 if (conf->event_queue_cfg & RTE_EVENT_QUEUE_CFG_ALL_TYPES)
 786                         return -EOVERFLOW;
 787
 788                 *attr_value = conf->schedule_type;
 789                 break;
 790         default:
 791                 return -EINVAL;
 792         };
 793         return 0;
 794 }
 795
 796 int
 797 rte_event_port_link(uint8_t dev_id, uint8_t port_id,
 798                     const uint8_t queues[], const uint8_t priorities[],
 799                     uint16_t nb_links)
 800 {
 801         struct rte_eventdev *dev;
 802         uint8_t queues_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 803         uint8_t priorities_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 804         uint16_t *links_map;
 805         int i, diag;
 806
 807         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 808         dev = &rte_eventdevs[dev_id];
 809         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_link, -ENOTSUP);
 810
 811         if (!is_valid_port(dev, port_id)) {
 812                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 813                 return -EINVAL;
 814         }
 815
 816         if (queues == NULL) {
 817                 for (i = 0; i < dev->data->nb_queues; i++)
 818                         queues_list[i] = i;
 819
 820                 queues = queues_list;
 821                 nb_links = dev->data->nb_queues;
 822         }
 823
 824         if (priorities == NULL) {
 825                 for (i = 0; i < nb_links; i++)
 826                         priorities_list[i] = RTE_EVENT_DEV_PRIORITY_NORMAL;
 827
 828                 priorities = priorities_list;
 829         }
 830
 831         for (i = 0; i < nb_links; i++)
 832                 if (queues[i] >= dev->data->nb_queues)
 833                         return -EINVAL;
 834
 835         diag = (*dev->dev_ops->port_link)(dev, dev->data->ports[port_id],
 836                                                 queues, priorities, nb_links);
 837         if (diag < 0)
 838                 return diag;
 839
 840         links_map = dev->data->links_map;
 841         /* Point links_map to this port specific area */
 842         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 843         for (i = 0; i < diag; i++)
 844                 links_map[queues[i]] = (uint8_t)priorities[i];
 845
 846         return diag;
 847 }
 848
 849 int
 850 rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
 851                       uint8_t queues[], uint16_t nb_unlinks)
 852 {
 853         struct rte_eventdev *dev;
 854         uint8_t all_queues[RTE_EVENT_MAX_QUEUES_PER_DEV];
 855         int i, diag;
 856         uint16_t *links_map;
 857
 858         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 859         dev = &rte_eventdevs[dev_id];
 860         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_unlink, -ENOTSUP);
 861
 862         if (!is_valid_port(dev, port_id)) {
 863                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 864                 return -EINVAL;
 865         }
 866
 867         if (queues == NULL) {
 868                 for (i = 0; i < dev->data->nb_queues; i++)
 869                         all_queues[i] = i;
 870                 queues = all_queues;
 871                 nb_unlinks = dev->data->nb_queues;
 872         }
 873
 874         for (i = 0; i < nb_unlinks; i++)
 875                 if (queues[i] >= dev->data->nb_queues)
 876                         return -EINVAL;
 877
 878         diag = (*dev->dev_ops->port_unlink)(dev, dev->data->ports[port_id],
 879                                         queues, nb_unlinks);
 880
 881         if (diag < 0)
 882                 return diag;
 883
 884         links_map = dev->data->links_map;
 885         /* Point links_map to this port specific area */
 886         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 887         for (i = 0; i < diag; i++)
 888                 links_map[queues[i]] = EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
 889
 890         return diag;
 891 }
 892
 893 int
 894 rte_event_port_links_get(uint8_t dev_id, uint8_t port_id,
 895                          uint8_t queues[], uint8_t priorities[])
 896 {
 897         struct rte_eventdev *dev;
 898         uint16_t *links_map;
 899         int i, count = 0;
 900
 901         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 902         dev = &rte_eventdevs[dev_id];
 903         if (!is_valid_port(dev, port_id)) {
 904                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 905                 return -EINVAL;
 906         }
 907
 908         links_map = dev->data->links_map;
 909         /* Point links_map to this port specific area */
 910         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 911         for (i = 0; i < dev->data->nb_queues; i++) {
 912                 if (links_map[i] != EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
 913                         queues[count] = i;
 914                         priorities[count] = (uint8_t)links_map[i];
 915                         ++count;
 916                 }
 917         }
 918         return count;
 919 }
 920
 921 int
 922 rte_event_dequeue_timeout_ticks(uint8_t dev_id, uint64_t ns,
 923                                  uint64_t *timeout_ticks)
 924 {
 925         struct rte_eventdev *dev;
 926
 927         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 928         dev = &rte_eventdevs[dev_id];
 929         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timeout_ticks, -ENOTSUP);
 930
 931         if (timeout_ticks == NULL)
 932                 return -EINVAL;
 933
 934         return (*dev->dev_ops->timeout_ticks)(dev, ns, timeout_ticks);
 935 }
 936
 937 int
 938 rte_event_dev_service_id_get(uint8_t dev_id, uint32_t *service_id)
 939 {
 940         struct rte_eventdev *dev;
 941
 942         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 943         dev = &rte_eventdevs[dev_id];
 944
 945         if (service_id == NULL)
 946                 return -EINVAL;
 947
 948         if (dev->data->service_inited)
 949                 *service_id = dev->data->service_id;
 950
 951         return dev->data->service_inited ? 0 : -ESRCH;
 952 }
 953
 954 int
 955 rte_event_dev_dump(uint8_t dev_id, FILE *f)
 956 {
 957         struct rte_eventdev *dev;
 958
 959         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 960         dev = &rte_eventdevs[dev_id];
 961         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dump, -ENOTSUP);
 962
 963         (*dev->dev_ops->dump)(dev, f);
 964         return 0;
 965
 966 }
 967
 968 static int
 969 xstats_get_count(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
 970                 uint8_t queue_port_id)
 971 {
 972         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
 973         if (dev->dev_ops->xstats_get_names != NULL)
 974                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
 975                                                         queue_port_id,
 976                                                         NULL, NULL, 0);
 977         return 0;
 978 }
 979
 980 int
 981 rte_event_dev_xstats_names_get(uint8_t dev_id,
 982                 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
 983                 struct rte_event_dev_xstats_name *xstats_names,
 984                 unsigned int *ids, unsigned int size)
 985 {
 986         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
 987         const int cnt_expected_entries = xstats_get_count(dev_id, mode,
 988                                                           queue_port_id);
 989         if (xstats_names == NULL || cnt_expected_entries < 0 ||
 990                         (int)size < cnt_expected_entries)
 991                 return cnt_expected_entries;
 992
 993         /* dev_id checked above */
 994         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
 995
 996         if (dev->dev_ops->xstats_get_names != NULL)
 997                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
 998                                 queue_port_id, xstats_names, ids, size);
 999
1000         return -ENOTSUP;
1001 }
1002
1003 /* retrieve eventdev extended statistics */
1004 int
1005 rte_event_dev_xstats_get(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
1006                 uint8_t queue_port_id, const unsigned int ids[],
1007                 uint64_t values[], unsigned int n)
1008 {
1009         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
1010         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1011
1012         /* implemented by the driver */
1013         if (dev->dev_ops->xstats_get != NULL)
1014                 return (*dev->dev_ops->xstats_get)(dev, mode, queue_port_id,
1015                                 ids, values, n);
1016         return -ENOTSUP;
1017 }
1018
1019 uint64_t
1020 rte_event_dev_xstats_by_name_get(uint8_t dev_id, const char *name,
1021                 unsigned int *id)
1022 {
1023         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, 0);
1024         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1025         unsigned int temp = -1;
1026
1027         if (id != NULL)
1028                 *id = (unsigned int)-1;
1029         else
1030                 id = &temp; /* ensure driver never gets a NULL value */
1031
1032         /* implemented by driver */
1033         if (dev->dev_ops->xstats_get_by_name != NULL)
1034                 return (*dev->dev_ops->xstats_get_by_name)(dev, name, id);
1035         return -ENOTSUP;
1036 }
1037
1038 int rte_event_dev_xstats_reset(uint8_t dev_id,
1039                 enum rte_event_dev_xstats_mode mode, int16_t queue_port_id,
1040                 const uint32_t ids[], uint32_t nb_ids)
1041 {
1042         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1043         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1044
1045         if (dev->dev_ops->xstats_reset != NULL)
1046                 return (*dev->dev_ops->xstats_reset)(dev, mode, queue_port_id,
1047                                                         ids, nb_ids);
1048         return -ENOTSUP;
1049 }
1050
1051 int
1052 rte_event_dev_start(uint8_t dev_id)
1053 {
1054         struct rte_eventdev *dev;
1055         int diag;
1056
1057         RTE_EDEV_LOG_DEBUG("Start dev_id=%" PRIu8, dev_id);
1058
1059         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1060         dev = &rte_eventdevs[dev_id];
1061         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
1062
1063         if (dev->data->dev_started != 0) {
1064                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already started",
1065                         dev_id);
1066                 return 0;
1067         }
1068
1069         diag = (*dev->dev_ops->dev_start)(dev);
1070         if (diag == 0)
1071                 dev->data->dev_started = 1;
1072         else
1073                 return diag;
1074
1075         return 0;
1076 }
1077
1078 void
1079 rte_event_dev_stop(uint8_t dev_id)
1080 {
1081         struct rte_eventdev *dev;
1082
1083         RTE_EDEV_LOG_DEBUG("Stop dev_id=%" PRIu8, dev_id);
1084
1085         RTE_EVENTDEV_VALID_DEVID_OR_RET(dev_id);
1086         dev = &rte_eventdevs[dev_id];
1087         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
1088
1089         if (dev->data->dev_started == 0) {
1090                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already stopped",
1091                         dev_id);
1092                 return;
1093         }
1094
1095         dev->data->dev_started = 0;
1096         (*dev->dev_ops->dev_stop)(dev);
1097 }
1098
1099 int
1100 rte_event_dev_close(uint8_t dev_id)
1101 {
1102         struct rte_eventdev *dev;
1103
1104         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1105         dev = &rte_eventdevs[dev_id];
1106         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
1107
1108         /* Device must be stopped before it can be closed */
1109         if (dev->data->dev_started == 1) {
1110                 RTE_EDEV_LOG_ERR("Device %u must be stopped before closing",
1111                                 dev_id);
1112                 return -EBUSY;
1113         }
1114
1115         return (*dev->dev_ops->dev_close)(dev);
1116 }
1117
1118 static inline int
1119 rte_eventdev_data_alloc(uint8_t dev_id, struct rte_eventdev_data **data,
1120                 int socket_id)
1121 {
1122         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1123         const struct rte_memzone *mz;
1124         int n;
1125
1126         /* Generate memzone name */
1127         n = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u", dev_id);
1128         if (n >= (int)sizeof(mz_name))
1129                 return -EINVAL;
1130
1131         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1132                 mz = rte_memzone_reserve(mz_name,
1133                                 sizeof(struct rte_eventdev_data),
1134                                 socket_id, 0);
1135         } else
1136                 mz = rte_memzone_lookup(mz_name);
1137
1138         if (mz == NULL)
1139                 return -ENOMEM;
1140
1141         *data = mz->addr;
1142         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1143                 memset(*data, 0, sizeof(struct rte_eventdev_data));
1144
1145         return 0;
1146 }
1147
1148 static inline uint8_t
1149 rte_eventdev_find_free_device_index(void)
1150 {
1151         uint8_t dev_id;
1152
1153         for (dev_id = 0; dev_id < RTE_EVENT_MAX_DEVS; dev_id++) {
1154                 if (rte_eventdevs[dev_id].attached ==
1155                                 RTE_EVENTDEV_DETACHED)
1156                         return dev_id;
1157         }
1158         return RTE_EVENT_MAX_DEVS;
1159 }
1160
1161 struct rte_eventdev *
1162 rte_event_pmd_allocate(const char *name, int socket_id)
1163 {
1164         struct rte_eventdev *eventdev;
1165         uint8_t dev_id;
1166
1167         if (rte_event_pmd_get_named_dev(name) != NULL) {
1168                 RTE_EDEV_LOG_ERR("Event device with name %s already "
1169                                 "allocated!", name);
1170                 return NULL;
1171         }
1172
1173         dev_id = rte_eventdev_find_free_device_index();
1174         if (dev_id == RTE_EVENT_MAX_DEVS) {
1175                 RTE_EDEV_LOG_ERR("Reached maximum number of event devices");
1176                 return NULL;
1177         }
1178
1179         eventdev = &rte_eventdevs[dev_id];
1180
1181         if (eventdev->data == NULL) {
1182                 struct rte_eventdev_data *eventdev_data = NULL;
1183
1184                 int retval = rte_eventdev_data_alloc(dev_id, &eventdev_data,
1185                                 socket_id);
1186
1187                 if (retval < 0 || eventdev_data == NULL)
1188                         return NULL;
1189
1190                 eventdev->data = eventdev_data;
1191
1192                 snprintf(eventdev->data->name, RTE_EVENTDEV_NAME_MAX_LEN,
1193                                 "%s", name);
1194
1195                 eventdev->data->dev_id = dev_id;
1196                 eventdev->data->socket_id = socket_id;
1197                 eventdev->data->dev_started = 0;
1198
1199                 eventdev->attached = RTE_EVENTDEV_ATTACHED;
1200
1201                 eventdev_globals.nb_devs++;
1202         }
1203
1204         return eventdev;
1205 }
1206
1207 int
1208 rte_event_pmd_release(struct rte_eventdev *eventdev)
1209 {
1210         int ret;
1211         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1212         const struct rte_memzone *mz;
1213
1214         if (eventdev == NULL)
1215                 return -EINVAL;
1216
1217         eventdev->attached = RTE_EVENTDEV_DETACHED;
1218         eventdev_globals.nb_devs--;
1219
1220         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1221                 rte_free(eventdev->data->dev_private);
1222
1223                 /* Generate memzone name */
1224                 ret = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u",
1225                                 eventdev->data->dev_id);
1226                 if (ret >= (int)sizeof(mz_name))
1227                         return -EINVAL;
1228
1229                 mz = rte_memzone_lookup(mz_name);
1230                 if (mz == NULL)
1231                         return -ENOMEM;
1232
1233                 ret = rte_memzone_free(mz);
1234                 if (ret)
1235                         return ret;
1236         }
1237
1238         eventdev->data = NULL;
1239         return 0;
1240 }