lib/librte_eventdev/rte_eventdev.c

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