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