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