lib/librte_eventdev/rte_eventdev.c

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2016 Cavium networks. 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 networks 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 (dev->data->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 < info.min_dequeue_timeout_ns
 370                         || dev_conf->dequeue_timeout_ns >
 371                                  info.max_dequeue_timeout_ns) {
 372                         RTE_EDEV_LOG_ERR("dev%d invalid dequeue_timeout_ns=%d"
 373                         " min_dequeue_timeout_ns=%d max_dequeue_timeout_ns=%d",
 374                         dev_id, dev_conf->dequeue_timeout_ns,
 375                         info.min_dequeue_timeout_ns,
 376                         info.max_dequeue_timeout_ns);
 377                         return -EINVAL;
 378                 }
 379         }
 380
 381         /* Check nb_events_limit is in limit */
 382         if (dev_conf->nb_events_limit > info.max_num_events) {
 383                 RTE_EDEV_LOG_ERR("dev%d nb_events_limit=%d > max_num_events=%d",
 384                 dev_id, dev_conf->nb_events_limit, info.max_num_events);
 385                 return -EINVAL;
 386         }
 387
 388         /* Check nb_event_queues is in limit */
 389         if (!dev_conf->nb_event_queues) {
 390                 RTE_EDEV_LOG_ERR("dev%d nb_event_queues cannot be zero",
 391                                         dev_id);
 392                 return -EINVAL;
 393         }
 394         if (dev_conf->nb_event_queues > info.max_event_queues) {
 395                 RTE_EDEV_LOG_ERR("%d nb_event_queues=%d > max_event_queues=%d",
 396                 dev_id, dev_conf->nb_event_queues, info.max_event_queues);
 397                 return -EINVAL;
 398         }
 399
 400         /* Check nb_event_ports is in limit */
 401         if (!dev_conf->nb_event_ports) {
 402                 RTE_EDEV_LOG_ERR("dev%d nb_event_ports cannot be zero", dev_id);
 403                 return -EINVAL;
 404         }
 405         if (dev_conf->nb_event_ports > info.max_event_ports) {
 406                 RTE_EDEV_LOG_ERR("id%d nb_event_ports=%d > max_event_ports= %d",
 407                 dev_id, dev_conf->nb_event_ports, info.max_event_ports);
 408                 return -EINVAL;
 409         }
 410
 411         /* Check nb_event_queue_flows is in limit */
 412         if (!dev_conf->nb_event_queue_flows) {
 413                 RTE_EDEV_LOG_ERR("dev%d nb_flows cannot be zero", dev_id);
 414                 return -EINVAL;
 415         }
 416         if (dev_conf->nb_event_queue_flows > info.max_event_queue_flows) {
 417                 RTE_EDEV_LOG_ERR("dev%d nb_flows=%x > max_flows=%x",
 418                 dev_id, dev_conf->nb_event_queue_flows,
 419                 info.max_event_queue_flows);
 420                 return -EINVAL;
 421         }
 422
 423         /* Check nb_event_port_dequeue_depth is in limit */
 424         if (!dev_conf->nb_event_port_dequeue_depth) {
 425                 RTE_EDEV_LOG_ERR("dev%d nb_dequeue_depth cannot be zero",
 426                                         dev_id);
 427                 return -EINVAL;
 428         }
 429         if (dev_conf->nb_event_port_dequeue_depth >
 430                          info.max_event_port_dequeue_depth) {
 431                 RTE_EDEV_LOG_ERR("dev%d nb_dq_depth=%d > max_dq_depth=%d",
 432                 dev_id, dev_conf->nb_event_port_dequeue_depth,
 433                 info.max_event_port_dequeue_depth);
 434                 return -EINVAL;
 435         }
 436
 437         /* Check nb_event_port_enqueue_depth is in limit */
 438         if (!dev_conf->nb_event_port_enqueue_depth) {
 439                 RTE_EDEV_LOG_ERR("dev%d nb_enqueue_depth cannot be zero",
 440                                         dev_id);
 441                 return -EINVAL;
 442         }
 443         if (dev_conf->nb_event_port_enqueue_depth >
 444                          info.max_event_port_enqueue_depth) {
 445                 RTE_EDEV_LOG_ERR("dev%d nb_enq_depth=%d > max_enq_depth=%d",
 446                 dev_id, dev_conf->nb_event_port_enqueue_depth,
 447                 info.max_event_port_enqueue_depth);
 448                 return -EINVAL;
 449         }
 450
 451         /* Copy the dev_conf parameter into the dev structure */
 452         memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
 453
 454         /* Setup new number of queues and reconfigure device. */
 455         diag = rte_event_dev_queue_config(dev, dev_conf->nb_event_queues);
 456         if (diag != 0) {
 457                 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_queue_config = %d",
 458                                 dev_id, diag);
 459                 return diag;
 460         }
 461
 462         /* Setup new number of ports and reconfigure device. */
 463         diag = rte_event_dev_port_config(dev, dev_conf->nb_event_ports);
 464         if (diag != 0) {
 465                 rte_event_dev_queue_config(dev, 0);
 466                 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_port_config = %d",
 467                                 dev_id, diag);
 468                 return diag;
 469         }
 470
 471         /* Configure the device */
 472         diag = (*dev->dev_ops->dev_configure)(dev);
 473         if (diag != 0) {
 474                 RTE_EDEV_LOG_ERR("dev%d dev_configure = %d", dev_id, diag);
 475                 rte_event_dev_queue_config(dev, 0);
 476                 rte_event_dev_port_config(dev, 0);
 477         }
 478
 479         dev->data->event_dev_cap = info.event_dev_cap;
 480         return diag;
 481 }
 482
 483 static inline int
 484 is_valid_queue(struct rte_eventdev *dev, uint8_t queue_id)
 485 {
 486         if (queue_id < dev->data->nb_queues && queue_id <
 487                                 RTE_EVENT_MAX_QUEUES_PER_DEV)
 488                 return 1;
 489         else
 490                 return 0;
 491 }
 492
 493 int
 494 rte_event_queue_default_conf_get(uint8_t dev_id, uint8_t queue_id,
 495                                  struct rte_event_queue_conf *queue_conf)
 496 {
 497         struct rte_eventdev *dev;
 498
 499         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 500         dev = &rte_eventdevs[dev_id];
 501
 502         if (queue_conf == NULL)
 503                 return -EINVAL;
 504
 505         if (!is_valid_queue(dev, queue_id)) {
 506                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 507                 return -EINVAL;
 508         }
 509
 510         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf, -ENOTSUP);
 511         memset(queue_conf, 0, sizeof(struct rte_event_queue_conf));
 512         (*dev->dev_ops->queue_def_conf)(dev, queue_id, queue_conf);
 513         return 0;
 514 }
 515
 516 static inline int
 517 is_valid_atomic_queue_conf(const struct rte_event_queue_conf *queue_conf)
 518 {
 519         if (queue_conf && (
 520                 ((queue_conf->event_queue_cfg &
 521                         RTE_EVENT_QUEUE_CFG_TYPE_MASK)
 522                         == RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 523                 ((queue_conf->event_queue_cfg &
 524                         RTE_EVENT_QUEUE_CFG_TYPE_MASK)
 525                         == RTE_EVENT_QUEUE_CFG_ATOMIC_ONLY)
 526                 ))
 527                 return 1;
 528         else
 529                 return 0;
 530 }
 531
 532 static inline int
 533 is_valid_ordered_queue_conf(const struct rte_event_queue_conf *queue_conf)
 534 {
 535         if (queue_conf && (
 536                 ((queue_conf->event_queue_cfg &
 537                         RTE_EVENT_QUEUE_CFG_TYPE_MASK)
 538                         == RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 539                 ((queue_conf->event_queue_cfg &
 540                         RTE_EVENT_QUEUE_CFG_TYPE_MASK)
 541                         == RTE_EVENT_QUEUE_CFG_ORDERED_ONLY)
 542                 ))
 543                 return 1;
 544         else
 545                 return 0;
 546 }
 547
 548
 549 int
 550 rte_event_queue_setup(uint8_t dev_id, uint8_t queue_id,
 551                       const struct rte_event_queue_conf *queue_conf)
 552 {
 553         struct rte_eventdev *dev;
 554         struct rte_event_queue_conf def_conf;
 555
 556         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 557         dev = &rte_eventdevs[dev_id];
 558
 559         if (!is_valid_queue(dev, queue_id)) {
 560                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 561                 return -EINVAL;
 562         }
 563
 564         /* Check nb_atomic_flows limit */
 565         if (is_valid_atomic_queue_conf(queue_conf)) {
 566                 if (queue_conf->nb_atomic_flows == 0 ||
 567                     queue_conf->nb_atomic_flows >
 568                         dev->data->dev_conf.nb_event_queue_flows) {
 569                         RTE_EDEV_LOG_ERR(
 570                 "dev%d queue%d Invalid nb_atomic_flows=%d max_flows=%d",
 571                         dev_id, queue_id, queue_conf->nb_atomic_flows,
 572                         dev->data->dev_conf.nb_event_queue_flows);
 573                         return -EINVAL;
 574                 }
 575         }
 576
 577         /* Check nb_atomic_order_sequences limit */
 578         if (is_valid_ordered_queue_conf(queue_conf)) {
 579                 if (queue_conf->nb_atomic_order_sequences == 0 ||
 580                     queue_conf->nb_atomic_order_sequences >
 581                         dev->data->dev_conf.nb_event_queue_flows) {
 582                         RTE_EDEV_LOG_ERR(
 583                 "dev%d queue%d Invalid nb_atomic_order_seq=%d max_flows=%d",
 584                         dev_id, queue_id, queue_conf->nb_atomic_order_sequences,
 585                         dev->data->dev_conf.nb_event_queue_flows);
 586                         return -EINVAL;
 587                 }
 588         }
 589
 590         if (dev->data->dev_started) {
 591                 RTE_EDEV_LOG_ERR(
 592                     "device %d must be stopped to allow queue setup", dev_id);
 593                 return -EBUSY;
 594         }
 595
 596         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_setup, -ENOTSUP);
 597
 598         if (queue_conf == NULL) {
 599                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf,
 600                                         -ENOTSUP);
 601                 (*dev->dev_ops->queue_def_conf)(dev, queue_id, &def_conf);
 602                 queue_conf = &def_conf;
 603         }
 604
 605         dev->data->queues_prio[queue_id] = queue_conf->priority;
 606         return (*dev->dev_ops->queue_setup)(dev, queue_id, queue_conf);
 607 }
 608
 609 uint8_t
 610 rte_event_queue_count(uint8_t dev_id)
 611 {
 612         struct rte_eventdev *dev;
 613
 614         dev = &rte_eventdevs[dev_id];
 615         return dev->data->nb_queues;
 616 }
 617
 618 uint8_t
 619 rte_event_queue_priority(uint8_t dev_id, uint8_t queue_id)
 620 {
 621         struct rte_eventdev *dev;
 622
 623         dev = &rte_eventdevs[dev_id];
 624         if (dev->data->event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_QOS)
 625                 return dev->data->queues_prio[queue_id];
 626         else
 627                 return RTE_EVENT_DEV_PRIORITY_NORMAL;
 628 }
 629
 630 static inline int
 631 is_valid_port(struct rte_eventdev *dev, uint8_t port_id)
 632 {
 633         if (port_id < dev->data->nb_ports)
 634                 return 1;
 635         else
 636                 return 0;
 637 }
 638
 639 int
 640 rte_event_port_default_conf_get(uint8_t dev_id, uint8_t port_id,
 641                                  struct rte_event_port_conf *port_conf)
 642 {
 643         struct rte_eventdev *dev;
 644
 645         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 646         dev = &rte_eventdevs[dev_id];
 647
 648         if (port_conf == NULL)
 649                 return -EINVAL;
 650
 651         if (!is_valid_port(dev, port_id)) {
 652                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 653                 return -EINVAL;
 654         }
 655
 656         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf, -ENOTSUP);
 657         memset(port_conf, 0, sizeof(struct rte_event_port_conf));
 658         (*dev->dev_ops->port_def_conf)(dev, port_id, port_conf);
 659         return 0;
 660 }
 661
 662 int
 663 rte_event_port_setup(uint8_t dev_id, uint8_t port_id,
 664                      const struct rte_event_port_conf *port_conf)
 665 {
 666         struct rte_eventdev *dev;
 667         struct rte_event_port_conf def_conf;
 668         int diag;
 669
 670         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 671         dev = &rte_eventdevs[dev_id];
 672
 673         if (!is_valid_port(dev, port_id)) {
 674                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 675                 return -EINVAL;
 676         }
 677
 678         /* Check new_event_threshold limit */
 679         if ((port_conf && !port_conf->new_event_threshold) ||
 680                         (port_conf && port_conf->new_event_threshold >
 681                                  dev->data->dev_conf.nb_events_limit)) {
 682                 RTE_EDEV_LOG_ERR(
 683                    "dev%d port%d Invalid event_threshold=%d nb_events_limit=%d",
 684                         dev_id, port_id, port_conf->new_event_threshold,
 685                         dev->data->dev_conf.nb_events_limit);
 686                 return -EINVAL;
 687         }
 688
 689         /* Check dequeue_depth limit */
 690         if ((port_conf && !port_conf->dequeue_depth) ||
 691                         (port_conf && port_conf->dequeue_depth >
 692                 dev->data->dev_conf.nb_event_port_dequeue_depth)) {
 693                 RTE_EDEV_LOG_ERR(
 694                    "dev%d port%d Invalid dequeue depth=%d max_dequeue_depth=%d",
 695                         dev_id, port_id, port_conf->dequeue_depth,
 696                         dev->data->dev_conf.nb_event_port_dequeue_depth);
 697                 return -EINVAL;
 698         }
 699
 700         /* Check enqueue_depth limit */
 701         if ((port_conf && !port_conf->enqueue_depth) ||
 702                         (port_conf && port_conf->enqueue_depth >
 703                 dev->data->dev_conf.nb_event_port_enqueue_depth)) {
 704                 RTE_EDEV_LOG_ERR(
 705                    "dev%d port%d Invalid enqueue depth=%d max_enqueue_depth=%d",
 706                         dev_id, port_id, port_conf->enqueue_depth,
 707                         dev->data->dev_conf.nb_event_port_enqueue_depth);
 708                 return -EINVAL;
 709         }
 710
 711         if (dev->data->dev_started) {
 712                 RTE_EDEV_LOG_ERR(
 713                     "device %d must be stopped to allow port setup", dev_id);
 714                 return -EBUSY;
 715         }
 716
 717         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_setup, -ENOTSUP);
 718
 719         if (port_conf == NULL) {
 720                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf,
 721                                         -ENOTSUP);
 722                 (*dev->dev_ops->port_def_conf)(dev, port_id, &def_conf);
 723                 port_conf = &def_conf;
 724         }
 725
 726         dev->data->ports_dequeue_depth[port_id] =
 727                         port_conf->dequeue_depth;
 728         dev->data->ports_enqueue_depth[port_id] =
 729                         port_conf->enqueue_depth;
 730
 731         diag = (*dev->dev_ops->port_setup)(dev, port_id, port_conf);
 732
 733         /* Unlink all the queues from this port(default state after setup) */
 734         if (!diag)
 735                 diag = rte_event_port_unlink(dev_id, port_id, NULL, 0);
 736
 737         if (diag < 0)
 738                 return diag;
 739
 740         return 0;
 741 }
 742
 743 uint8_t
 744 rte_event_port_dequeue_depth(uint8_t dev_id, uint8_t port_id)
 745 {
 746         struct rte_eventdev *dev;
 747
 748         dev = &rte_eventdevs[dev_id];
 749         return dev->data->ports_dequeue_depth[port_id];
 750 }
 751
 752 uint8_t
 753 rte_event_port_enqueue_depth(uint8_t dev_id, uint8_t port_id)
 754 {
 755         struct rte_eventdev *dev;
 756
 757         dev = &rte_eventdevs[dev_id];
 758         return dev->data->ports_enqueue_depth[port_id];
 759 }
 760
 761 uint8_t
 762 rte_event_port_count(uint8_t dev_id)
 763 {
 764         struct rte_eventdev *dev;
 765
 766         dev = &rte_eventdevs[dev_id];
 767         return dev->data->nb_ports;
 768 }
 769
 770 int
 771 rte_event_port_link(uint8_t dev_id, uint8_t port_id,
 772                     const uint8_t queues[], const uint8_t priorities[],
 773                     uint16_t nb_links)
 774 {
 775         struct rte_eventdev *dev;
 776         uint8_t queues_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 777         uint8_t priorities_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 778         uint16_t *links_map;
 779         int i, diag;
 780
 781         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 782         dev = &rte_eventdevs[dev_id];
 783         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_link, -ENOTSUP);
 784
 785         if (!is_valid_port(dev, port_id)) {
 786                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 787                 return -EINVAL;
 788         }
 789
 790         if (queues == NULL) {
 791                 for (i = 0; i < dev->data->nb_queues; i++)
 792                         queues_list[i] = i;
 793
 794                 queues = queues_list;
 795                 nb_links = dev->data->nb_queues;
 796         }
 797
 798         if (priorities == NULL) {
 799                 for (i = 0; i < nb_links; i++)
 800                         priorities_list[i] = RTE_EVENT_DEV_PRIORITY_NORMAL;
 801
 802                 priorities = priorities_list;
 803         }
 804
 805         for (i = 0; i < nb_links; i++)
 806                 if (queues[i] >= dev->data->nb_queues)
 807                         return -EINVAL;
 808
 809         diag = (*dev->dev_ops->port_link)(dev, dev->data->ports[port_id],
 810                                                 queues, priorities, nb_links);
 811         if (diag < 0)
 812                 return diag;
 813
 814         links_map = dev->data->links_map;
 815         /* Point links_map to this port specific area */
 816         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 817         for (i = 0; i < diag; i++)
 818                 links_map[queues[i]] = (uint8_t)priorities[i];
 819
 820         return diag;
 821 }
 822
 823 int
 824 rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
 825                       uint8_t queues[], uint16_t nb_unlinks)
 826 {
 827         struct rte_eventdev *dev;
 828         uint8_t all_queues[RTE_EVENT_MAX_QUEUES_PER_DEV];
 829         int i, diag;
 830         uint16_t *links_map;
 831
 832         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 833         dev = &rte_eventdevs[dev_id];
 834         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_unlink, -ENOTSUP);
 835
 836         if (!is_valid_port(dev, port_id)) {
 837                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 838                 return -EINVAL;
 839         }
 840
 841         if (queues == NULL) {
 842                 for (i = 0; i < dev->data->nb_queues; i++)
 843                         all_queues[i] = i;
 844                 queues = all_queues;
 845                 nb_unlinks = dev->data->nb_queues;
 846         }
 847
 848         for (i = 0; i < nb_unlinks; i++)
 849                 if (queues[i] >= dev->data->nb_queues)
 850                         return -EINVAL;
 851
 852         diag = (*dev->dev_ops->port_unlink)(dev, dev->data->ports[port_id],
 853                                         queues, nb_unlinks);
 854
 855         if (diag < 0)
 856                 return diag;
 857
 858         links_map = dev->data->links_map;
 859         /* Point links_map to this port specific area */
 860         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 861         for (i = 0; i < diag; i++)
 862                 links_map[queues[i]] = EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
 863
 864         return diag;
 865 }
 866
 867 int
 868 rte_event_port_links_get(uint8_t dev_id, uint8_t port_id,
 869                          uint8_t queues[], uint8_t priorities[])
 870 {
 871         struct rte_eventdev *dev;
 872         uint16_t *links_map;
 873         int i, count = 0;
 874
 875         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 876         dev = &rte_eventdevs[dev_id];
 877         if (!is_valid_port(dev, port_id)) {
 878                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 879                 return -EINVAL;
 880         }
 881
 882         links_map = dev->data->links_map;
 883         /* Point links_map to this port specific area */
 884         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 885         for (i = 0; i < dev->data->nb_queues; i++) {
 886                 if (links_map[i] != EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
 887                         queues[count] = i;
 888                         priorities[count] = (uint8_t)links_map[i];
 889                         ++count;
 890                 }
 891         }
 892         return count;
 893 }
 894
 895 int
 896 rte_event_dequeue_timeout_ticks(uint8_t dev_id, uint64_t ns,
 897                                  uint64_t *timeout_ticks)
 898 {
 899         struct rte_eventdev *dev;
 900
 901         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 902         dev = &rte_eventdevs[dev_id];
 903         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timeout_ticks, -ENOTSUP);
 904
 905         if (timeout_ticks == NULL)
 906                 return -EINVAL;
 907
 908         return (*dev->dev_ops->timeout_ticks)(dev, ns, timeout_ticks);
 909 }
 910
 911 int
 912 rte_event_dev_dump(uint8_t dev_id, FILE *f)
 913 {
 914         struct rte_eventdev *dev;
 915
 916         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 917         dev = &rte_eventdevs[dev_id];
 918         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dump, -ENOTSUP);
 919
 920         (*dev->dev_ops->dump)(dev, f);
 921         return 0;
 922
 923 }
 924
 925 static int
 926 xstats_get_count(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
 927                 uint8_t queue_port_id)
 928 {
 929         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
 930         if (dev->dev_ops->xstats_get_names != NULL)
 931                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
 932                                                         queue_port_id,
 933                                                         NULL, NULL, 0);
 934         return 0;
 935 }
 936
 937 int
 938 rte_event_dev_xstats_names_get(uint8_t dev_id,
 939                 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
 940                 struct rte_event_dev_xstats_name *xstats_names,
 941                 unsigned int *ids, unsigned int size)
 942 {
 943         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
 944         const int cnt_expected_entries = xstats_get_count(dev_id, mode,
 945                                                           queue_port_id);
 946         if (xstats_names == NULL || cnt_expected_entries < 0 ||
 947                         (int)size < cnt_expected_entries)
 948                 return cnt_expected_entries;
 949
 950         /* dev_id checked above */
 951         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
 952
 953         if (dev->dev_ops->xstats_get_names != NULL)
 954                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
 955                                 queue_port_id, xstats_names, ids, size);
 956
 957         return -ENOTSUP;
 958 }
 959
 960 /* retrieve eventdev extended statistics */
 961 int
 962 rte_event_dev_xstats_get(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
 963                 uint8_t queue_port_id, const unsigned int ids[],
 964                 uint64_t values[], unsigned int n)
 965 {
 966         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
 967         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
 968
 969         /* implemented by the driver */
 970         if (dev->dev_ops->xstats_get != NULL)
 971                 return (*dev->dev_ops->xstats_get)(dev, mode, queue_port_id,
 972                                 ids, values, n);
 973         return -ENOTSUP;
 974 }
 975
 976 uint64_t
 977 rte_event_dev_xstats_by_name_get(uint8_t dev_id, const char *name,
 978                 unsigned int *id)
 979 {
 980         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, 0);
 981         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
 982         unsigned int temp = -1;
 983
 984         if (id != NULL)
 985                 *id = (unsigned int)-1;
 986         else
 987                 id = &temp; /* ensure driver never gets a NULL value */
 988
 989         /* implemented by driver */
 990         if (dev->dev_ops->xstats_get_by_name != NULL)
 991                 return (*dev->dev_ops->xstats_get_by_name)(dev, name, id);
 992         return -ENOTSUP;
 993 }
 994
 995 int rte_event_dev_xstats_reset(uint8_t dev_id,
 996                 enum rte_event_dev_xstats_mode mode, int16_t queue_port_id,
 997                 const uint32_t ids[], uint32_t nb_ids)
 998 {
 999         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1000         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1001
1002         if (dev->dev_ops->xstats_reset != NULL)
1003                 return (*dev->dev_ops->xstats_reset)(dev, mode, queue_port_id,
1004                                                         ids, nb_ids);
1005         return -ENOTSUP;
1006 }
1007
1008 int
1009 rte_event_dev_start(uint8_t dev_id)
1010 {
1011         struct rte_eventdev *dev;
1012         int diag;
1013
1014         RTE_EDEV_LOG_DEBUG("Start dev_id=%" PRIu8, dev_id);
1015
1016         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1017         dev = &rte_eventdevs[dev_id];
1018         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
1019
1020         if (dev->data->dev_started != 0) {
1021                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already started",
1022                         dev_id);
1023                 return 0;
1024         }
1025
1026         diag = (*dev->dev_ops->dev_start)(dev);
1027         if (diag == 0)
1028                 dev->data->dev_started = 1;
1029         else
1030                 return diag;
1031
1032         return 0;
1033 }
1034
1035 void
1036 rte_event_dev_stop(uint8_t dev_id)
1037 {
1038         struct rte_eventdev *dev;
1039
1040         RTE_EDEV_LOG_DEBUG("Stop dev_id=%" PRIu8, dev_id);
1041
1042         RTE_EVENTDEV_VALID_DEVID_OR_RET(dev_id);
1043         dev = &rte_eventdevs[dev_id];
1044         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
1045
1046         if (dev->data->dev_started == 0) {
1047                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already stopped",
1048                         dev_id);
1049                 return;
1050         }
1051
1052         dev->data->dev_started = 0;
1053         (*dev->dev_ops->dev_stop)(dev);
1054 }
1055
1056 int
1057 rte_event_dev_close(uint8_t dev_id)
1058 {
1059         struct rte_eventdev *dev;
1060
1061         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1062         dev = &rte_eventdevs[dev_id];
1063         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
1064
1065         /* Device must be stopped before it can be closed */
1066         if (dev->data->dev_started == 1) {
1067                 RTE_EDEV_LOG_ERR("Device %u must be stopped before closing",
1068                                 dev_id);
1069                 return -EBUSY;
1070         }
1071
1072         return (*dev->dev_ops->dev_close)(dev);
1073 }
1074
1075 static inline int
1076 rte_eventdev_data_alloc(uint8_t dev_id, struct rte_eventdev_data **data,
1077                 int socket_id)
1078 {
1079         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1080         const struct rte_memzone *mz;
1081         int n;
1082
1083         /* Generate memzone name */
1084         n = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u", dev_id);
1085         if (n >= (int)sizeof(mz_name))
1086                 return -EINVAL;
1087
1088         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1089                 mz = rte_memzone_reserve(mz_name,
1090                                 sizeof(struct rte_eventdev_data),
1091                                 socket_id, 0);
1092         } else
1093                 mz = rte_memzone_lookup(mz_name);
1094
1095         if (mz == NULL)
1096                 return -ENOMEM;
1097
1098         *data = mz->addr;
1099         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1100                 memset(*data, 0, sizeof(struct rte_eventdev_data));
1101
1102         return 0;
1103 }
1104
1105 static inline uint8_t
1106 rte_eventdev_find_free_device_index(void)
1107 {
1108         uint8_t dev_id;
1109
1110         for (dev_id = 0; dev_id < RTE_EVENT_MAX_DEVS; dev_id++) {
1111                 if (rte_eventdevs[dev_id].attached ==
1112                                 RTE_EVENTDEV_DETACHED)
1113                         return dev_id;
1114         }
1115         return RTE_EVENT_MAX_DEVS;
1116 }
1117
1118 struct rte_eventdev *
1119 rte_event_pmd_allocate(const char *name, int socket_id)
1120 {
1121         struct rte_eventdev *eventdev;
1122         uint8_t dev_id;
1123
1124         if (rte_event_pmd_get_named_dev(name) != NULL) {
1125                 RTE_EDEV_LOG_ERR("Event device with name %s already "
1126                                 "allocated!", name);
1127                 return NULL;
1128         }
1129
1130         dev_id = rte_eventdev_find_free_device_index();
1131         if (dev_id == RTE_EVENT_MAX_DEVS) {
1132                 RTE_EDEV_LOG_ERR("Reached maximum number of event devices");
1133                 return NULL;
1134         }
1135
1136         eventdev = &rte_eventdevs[dev_id];
1137
1138         if (eventdev->data == NULL) {
1139                 struct rte_eventdev_data *eventdev_data = NULL;
1140
1141                 int retval = rte_eventdev_data_alloc(dev_id, &eventdev_data,
1142                                 socket_id);
1143
1144                 if (retval < 0 || eventdev_data == NULL)
1145                         return NULL;
1146
1147                 eventdev->data = eventdev_data;
1148
1149                 snprintf(eventdev->data->name, RTE_EVENTDEV_NAME_MAX_LEN,
1150                                 "%s", name);
1151
1152                 eventdev->data->dev_id = dev_id;
1153                 eventdev->data->socket_id = socket_id;
1154                 eventdev->data->dev_started = 0;
1155
1156                 eventdev->attached = RTE_EVENTDEV_ATTACHED;
1157
1158                 eventdev_globals.nb_devs++;
1159         }
1160
1161         return eventdev;
1162 }
1163
1164 int
1165 rte_event_pmd_release(struct rte_eventdev *eventdev)
1166 {
1167         int ret;
1168         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1169         const struct rte_memzone *mz;
1170
1171         if (eventdev == NULL)
1172                 return -EINVAL;
1173
1174         eventdev->attached = RTE_EVENTDEV_DETACHED;
1175         eventdev_globals.nb_devs--;
1176
1177         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1178                 rte_free(eventdev->data->dev_private);
1179
1180                 /* Generate memzone name */
1181                 ret = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u",
1182                                 eventdev->data->dev_id);
1183                 if (ret >= (int)sizeof(mz_name))
1184                         return -EINVAL;
1185
1186                 mz = rte_memzone_lookup(mz_name);
1187                 if (mz == NULL)
1188                         return -ENOMEM;
1189
1190                 ret = rte_memzone_free(mz);
1191                 if (ret)
1192                         return ret;
1193         }
1194
1195         eventdev->data = NULL;
1196         return 0;
1197 }
1198
1199 struct rte_eventdev *
1200 rte_event_pmd_vdev_init(const char *name, size_t dev_private_size,
1201                 int socket_id)
1202 {
1203         struct rte_eventdev *eventdev;
1204
1205         /* Allocate device structure */
1206         eventdev = rte_event_pmd_allocate(name, socket_id);
1207         if (eventdev == NULL)
1208                 return NULL;
1209
1210         /* Allocate private device structure */
1211         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1212                 eventdev->data->dev_private =
1213                                 rte_zmalloc_socket("eventdev device private",
1214                                                 dev_private_size,
1215                                                 RTE_CACHE_LINE_SIZE,
1216                                                 socket_id);
1217
1218                 if (eventdev->data->dev_private == NULL)
1219                         rte_panic("Cannot allocate memzone for private device"
1220                                         " data");
1221         }
1222
1223         return eventdev;
1224 }
1225
1226 int
1227 rte_event_pmd_vdev_uninit(const char *name)
1228 {
1229         int ret;
1230         struct rte_eventdev *eventdev;
1231
1232         if (name == NULL)
1233                 return -EINVAL;
1234
1235         eventdev = rte_event_pmd_get_named_dev(name);
1236         if (eventdev == NULL)
1237                 return -ENODEV;
1238
1239         ret = rte_event_dev_close(eventdev->data->dev_id);
1240         if (ret < 0)
1241                 return ret;
1242
1243         /* Free the event device */
1244         rte_event_pmd_release(eventdev);
1245
1246         return 0;
1247 }