lib/librte_eventdev/rte_eventdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016 Cavium, Inc
   3  */
   4
   5 #include <ctype.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <stdarg.h>
  10 #include <errno.h>
  11 #include <stdint.h>
  12 #include <inttypes.h>
  13 #include <sys/types.h>
  14 #include <sys/queue.h>
  15
  16 #include <rte_string_fns.h>
  17 #include <rte_byteorder.h>
  18 #include <rte_log.h>
  19 #include <rte_debug.h>
  20 #include <rte_dev.h>
  21 #include <rte_memory.h>
  22 #include <rte_memcpy.h>
  23 #include <rte_memzone.h>
  24 #include <rte_eal.h>
  25 #include <rte_per_lcore.h>
  26 #include <rte_lcore.h>
  27 #include <rte_atomic.h>
  28 #include <rte_branch_prediction.h>
  29 #include <rte_common.h>
  30 #include <rte_malloc.h>
  31 #include <rte_errno.h>
  32 #include <rte_ethdev.h>
  33 #include <rte_cryptodev.h>
  34 #include <rte_cryptodev_pmd.h>
  35
  36 #include "rte_eventdev.h"
  37 #include "rte_eventdev_pmd.h"
  38 #include "rte_eventdev_trace.h"
  39
  40 static struct rte_eventdev rte_event_devices[RTE_EVENT_MAX_DEVS];
  41
  42 struct rte_eventdev *rte_eventdevs = rte_event_devices;
  43
  44 static struct rte_eventdev_global eventdev_globals = {
  45         .nb_devs                = 0
  46 };
  47
  48 /* Event dev north bound API implementation */
  49
  50 uint8_t
  51 rte_event_dev_count(void)
  52 {
  53         return eventdev_globals.nb_devs;
  54 }
  55
  56 int
  57 rte_event_dev_get_dev_id(const char *name)
  58 {
  59         int i;
  60         uint8_t cmp;
  61
  62         if (!name)
  63                 return -EINVAL;
  64
  65         for (i = 0; i < eventdev_globals.nb_devs; i++) {
  66                 cmp = (strncmp(rte_event_devices[i].data->name, name,
  67                                 RTE_EVENTDEV_NAME_MAX_LEN) == 0) ||
  68                         (rte_event_devices[i].dev ? (strncmp(
  69                                 rte_event_devices[i].dev->driver->name, name,
  70                                          RTE_EVENTDEV_NAME_MAX_LEN) == 0) : 0);
  71                 if (cmp && (rte_event_devices[i].attached ==
  72                                         RTE_EVENTDEV_ATTACHED))
  73                         return i;
  74         }
  75         return -ENODEV;
  76 }
  77
  78 int
  79 rte_event_dev_socket_id(uint8_t dev_id)
  80 {
  81         struct rte_eventdev *dev;
  82
  83         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
  84         dev = &rte_eventdevs[dev_id];
  85
  86         return dev->data->socket_id;
  87 }
  88
  89 int
  90 rte_event_dev_info_get(uint8_t dev_id, struct rte_event_dev_info *dev_info)
  91 {
  92         struct rte_eventdev *dev;
  93
  94         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
  95         dev = &rte_eventdevs[dev_id];
  96
  97         if (dev_info == NULL)
  98                 return -EINVAL;
  99
 100         memset(dev_info, 0, sizeof(struct rte_event_dev_info));
 101
 102         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
 103         (*dev->dev_ops->dev_infos_get)(dev, dev_info);
 104
 105         dev_info->dequeue_timeout_ns = dev->data->dev_conf.dequeue_timeout_ns;
 106
 107         dev_info->dev = dev->dev;
 108         return 0;
 109 }
 110
 111 int
 112 rte_event_eth_rx_adapter_caps_get(uint8_t dev_id, uint16_t eth_port_id,
 113                                 uint32_t *caps)
 114 {
 115         struct rte_eventdev *dev;
 116
 117         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 118         RTE_ETH_VALID_PORTID_OR_ERR_RET(eth_port_id, -EINVAL);
 119
 120         dev = &rte_eventdevs[dev_id];
 121
 122         if (caps == NULL)
 123                 return -EINVAL;
 124         *caps = 0;
 125
 126         return dev->dev_ops->eth_rx_adapter_caps_get ?
 127                                 (*dev->dev_ops->eth_rx_adapter_caps_get)(dev,
 128                                                 &rte_eth_devices[eth_port_id],
 129                                                 caps)
 130                                 : 0;
 131 }
 132
 133 int
 134 rte_event_timer_adapter_caps_get(uint8_t dev_id, uint32_t *caps)
 135 {
 136         struct rte_eventdev *dev;
 137         const struct rte_event_timer_adapter_ops *ops;
 138
 139         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_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->timer_adapter_caps_get ?
 148                                 (*dev->dev_ops->timer_adapter_caps_get)(dev,
 149                                                                         0,
 150                                                                         caps,
 151                                                                         &ops)
 152                                 : 0;
 153 }
 154
 155 int
 156 rte_event_crypto_adapter_caps_get(uint8_t dev_id, uint8_t cdev_id,
 157                                   uint32_t *caps)
 158 {
 159         struct rte_eventdev *dev;
 160         struct rte_cryptodev *cdev;
 161
 162         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 163         if (!rte_cryptodev_pmd_is_valid_dev(cdev_id))
 164                 return -EINVAL;
 165
 166         dev = &rte_eventdevs[dev_id];
 167         cdev = rte_cryptodev_pmd_get_dev(cdev_id);
 168
 169         if (caps == NULL)
 170                 return -EINVAL;
 171         *caps = 0;
 172
 173         return dev->dev_ops->crypto_adapter_caps_get ?
 174                 (*dev->dev_ops->crypto_adapter_caps_get)
 175                 (dev, cdev, caps) : -ENOTSUP;
 176 }
 177
 178 int
 179 rte_event_eth_tx_adapter_caps_get(uint8_t dev_id, uint16_t eth_port_id,
 180                                 uint32_t *caps)
 181 {
 182         struct rte_eventdev *dev;
 183         struct rte_eth_dev *eth_dev;
 184
 185         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 186         RTE_ETH_VALID_PORTID_OR_ERR_RET(eth_port_id, -EINVAL);
 187
 188         dev = &rte_eventdevs[dev_id];
 189         eth_dev = &rte_eth_devices[eth_port_id];
 190
 191         if (caps == NULL)
 192                 return -EINVAL;
 193
 194         *caps = 0;
 195
 196         return dev->dev_ops->eth_tx_adapter_caps_get ?
 197                         (*dev->dev_ops->eth_tx_adapter_caps_get)(dev,
 198                                                                 eth_dev,
 199                                                                 caps)
 200                         : 0;
 201 }
 202
 203 static inline int
 204 rte_event_dev_queue_config(struct rte_eventdev *dev, uint8_t nb_queues)
 205 {
 206         uint8_t old_nb_queues = dev->data->nb_queues;
 207         struct rte_event_queue_conf *queues_cfg;
 208         unsigned int i;
 209
 210         RTE_EDEV_LOG_DEBUG("Setup %d queues on device %u", nb_queues,
 211                          dev->data->dev_id);
 212
 213         /* First time configuration */
 214         if (dev->data->queues_cfg == NULL && nb_queues != 0) {
 215                 /* Allocate memory to store queue configuration */
 216                 dev->data->queues_cfg = rte_zmalloc_socket(
 217                                 "eventdev->data->queues_cfg",
 218                                 sizeof(dev->data->queues_cfg[0]) * nb_queues,
 219                                 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 220                 if (dev->data->queues_cfg == NULL) {
 221                         dev->data->nb_queues = 0;
 222                         RTE_EDEV_LOG_ERR("failed to get mem for queue cfg,"
 223                                         "nb_queues %u", nb_queues);
 224                         return -(ENOMEM);
 225                 }
 226         /* Re-configure */
 227         } else if (dev->data->queues_cfg != NULL && nb_queues != 0) {
 228                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_release, -ENOTSUP);
 229
 230                 for (i = nb_queues; i < old_nb_queues; i++)
 231                         (*dev->dev_ops->queue_release)(dev, i);
 232
 233                 /* Re allocate memory to store queue configuration */
 234                 queues_cfg = dev->data->queues_cfg;
 235                 queues_cfg = rte_realloc(queues_cfg,
 236                                 sizeof(queues_cfg[0]) * nb_queues,
 237                                 RTE_CACHE_LINE_SIZE);
 238                 if (queues_cfg == NULL) {
 239                         RTE_EDEV_LOG_ERR("failed to realloc queue cfg memory,"
 240                                                 " nb_queues %u", nb_queues);
 241                         return -(ENOMEM);
 242                 }
 243                 dev->data->queues_cfg = queues_cfg;
 244
 245                 if (nb_queues > old_nb_queues) {
 246                         uint8_t new_qs = nb_queues - old_nb_queues;
 247
 248                         memset(queues_cfg + old_nb_queues, 0,
 249                                 sizeof(queues_cfg[0]) * new_qs);
 250                 }
 251         } else if (dev->data->queues_cfg != NULL && nb_queues == 0) {
 252                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_release, -ENOTSUP);
 253
 254                 for (i = nb_queues; i < old_nb_queues; i++)
 255                         (*dev->dev_ops->queue_release)(dev, i);
 256         }
 257
 258         dev->data->nb_queues = nb_queues;
 259         return 0;
 260 }
 261
 262 #define EVENT_QUEUE_SERVICE_PRIORITY_INVALID (0xdead)
 263
 264 static inline int
 265 rte_event_dev_port_config(struct rte_eventdev *dev, uint8_t nb_ports)
 266 {
 267         uint8_t old_nb_ports = dev->data->nb_ports;
 268         void **ports;
 269         uint16_t *links_map;
 270         struct rte_event_port_conf *ports_cfg;
 271         unsigned int i;
 272
 273         RTE_EDEV_LOG_DEBUG("Setup %d ports on device %u", nb_ports,
 274                          dev->data->dev_id);
 275
 276         /* First time configuration */
 277         if (dev->data->ports == NULL && nb_ports != 0) {
 278                 dev->data->ports = rte_zmalloc_socket("eventdev->data->ports",
 279                                 sizeof(dev->data->ports[0]) * nb_ports,
 280                                 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 281                 if (dev->data->ports == NULL) {
 282                         dev->data->nb_ports = 0;
 283                         RTE_EDEV_LOG_ERR("failed to get mem for port meta data,"
 284                                         "nb_ports %u", nb_ports);
 285                         return -(ENOMEM);
 286                 }
 287
 288                 /* Allocate memory to store port configurations */
 289                 dev->data->ports_cfg =
 290                         rte_zmalloc_socket("eventdev->ports_cfg",
 291                         sizeof(dev->data->ports_cfg[0]) * nb_ports,
 292                         RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 293                 if (dev->data->ports_cfg == NULL) {
 294                         dev->data->nb_ports = 0;
 295                         RTE_EDEV_LOG_ERR("failed to get mem for port cfg,"
 296                                         "nb_ports %u", nb_ports);
 297                         return -(ENOMEM);
 298                 }
 299
 300                 /* Allocate memory to store queue to port link connection */
 301                 dev->data->links_map =
 302                         rte_zmalloc_socket("eventdev->links_map",
 303                         sizeof(dev->data->links_map[0]) * nb_ports *
 304                         RTE_EVENT_MAX_QUEUES_PER_DEV,
 305                         RTE_CACHE_LINE_SIZE, dev->data->socket_id);
 306                 if (dev->data->links_map == NULL) {
 307                         dev->data->nb_ports = 0;
 308                         RTE_EDEV_LOG_ERR("failed to get mem for port_map area,"
 309                                         "nb_ports %u", nb_ports);
 310                         return -(ENOMEM);
 311                 }
 312                 for (i = 0; i < nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV; i++)
 313                         dev->data->links_map[i] =
 314                                 EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
 315         } else if (dev->data->ports != NULL && nb_ports != 0) {/* re-config */
 316                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_release, -ENOTSUP);
 317
 318                 ports = dev->data->ports;
 319                 ports_cfg = dev->data->ports_cfg;
 320                 links_map = dev->data->links_map;
 321
 322                 for (i = nb_ports; i < old_nb_ports; i++)
 323                         (*dev->dev_ops->port_release)(ports[i]);
 324
 325                 /* Realloc memory for ports */
 326                 ports = rte_realloc(ports, sizeof(ports[0]) * nb_ports,
 327                                 RTE_CACHE_LINE_SIZE);
 328                 if (ports == NULL) {
 329                         RTE_EDEV_LOG_ERR("failed to realloc port meta data,"
 330                                                 " nb_ports %u", nb_ports);
 331                         return -(ENOMEM);
 332                 }
 333
 334                 /* Realloc memory for ports_cfg */
 335                 ports_cfg = rte_realloc(ports_cfg,
 336                         sizeof(ports_cfg[0]) * nb_ports,
 337                         RTE_CACHE_LINE_SIZE);
 338                 if (ports_cfg == NULL) {
 339                         RTE_EDEV_LOG_ERR("failed to realloc port cfg mem,"
 340                                                 " nb_ports %u", nb_ports);
 341                         return -(ENOMEM);
 342                 }
 343
 344                 /* Realloc memory to store queue to port link connection */
 345                 links_map = rte_realloc(links_map,
 346                         sizeof(dev->data->links_map[0]) * nb_ports *
 347                         RTE_EVENT_MAX_QUEUES_PER_DEV,
 348                         RTE_CACHE_LINE_SIZE);
 349                 if (links_map == NULL) {
 350                         dev->data->nb_ports = 0;
 351                         RTE_EDEV_LOG_ERR("failed to realloc mem for port_map,"
 352                                         "nb_ports %u", nb_ports);
 353                         return -(ENOMEM);
 354                 }
 355
 356                 if (nb_ports > old_nb_ports) {
 357                         uint8_t new_ps = nb_ports - old_nb_ports;
 358                         unsigned int old_links_map_end =
 359                                 old_nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV;
 360                         unsigned int links_map_end =
 361                                 nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV;
 362
 363                         memset(ports + old_nb_ports, 0,
 364                                 sizeof(ports[0]) * new_ps);
 365                         memset(ports_cfg + old_nb_ports, 0,
 366                                 sizeof(ports_cfg[0]) * new_ps);
 367                         for (i = old_links_map_end; i < links_map_end; i++)
 368                                 links_map[i] =
 369                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
 370                 }
 371
 372                 dev->data->ports = ports;
 373                 dev->data->ports_cfg = ports_cfg;
 374                 dev->data->links_map = links_map;
 375         } else if (dev->data->ports != NULL && nb_ports == 0) {
 376                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_release, -ENOTSUP);
 377
 378                 ports = dev->data->ports;
 379                 for (i = nb_ports; i < old_nb_ports; i++)
 380                         (*dev->dev_ops->port_release)(ports[i]);
 381         }
 382
 383         dev->data->nb_ports = nb_ports;
 384         return 0;
 385 }
 386
 387 int
 388 rte_event_dev_configure(uint8_t dev_id,
 389                         const struct rte_event_dev_config *dev_conf)
 390 {
 391         struct rte_eventdev *dev;
 392         struct rte_event_dev_info info;
 393         int diag;
 394
 395         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 396         dev = &rte_eventdevs[dev_id];
 397
 398         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
 399         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
 400
 401         if (dev->data->dev_started) {
 402                 RTE_EDEV_LOG_ERR(
 403                     "device %d must be stopped to allow configuration", dev_id);
 404                 return -EBUSY;
 405         }
 406
 407         if (dev_conf == NULL)
 408                 return -EINVAL;
 409
 410         (*dev->dev_ops->dev_infos_get)(dev, &info);
 411
 412         /* Check dequeue_timeout_ns value is in limit */
 413         if (!(dev_conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT)) {
 414                 if (dev_conf->dequeue_timeout_ns &&
 415                     (dev_conf->dequeue_timeout_ns < info.min_dequeue_timeout_ns
 416                         || dev_conf->dequeue_timeout_ns >
 417                                  info.max_dequeue_timeout_ns)) {
 418                         RTE_EDEV_LOG_ERR("dev%d invalid dequeue_timeout_ns=%d"
 419                         " min_dequeue_timeout_ns=%d max_dequeue_timeout_ns=%d",
 420                         dev_id, dev_conf->dequeue_timeout_ns,
 421                         info.min_dequeue_timeout_ns,
 422                         info.max_dequeue_timeout_ns);
 423                         return -EINVAL;
 424                 }
 425         }
 426
 427         /* Check nb_events_limit is in limit */
 428         if (dev_conf->nb_events_limit > info.max_num_events) {
 429                 RTE_EDEV_LOG_ERR("dev%d nb_events_limit=%d > max_num_events=%d",
 430                 dev_id, dev_conf->nb_events_limit, info.max_num_events);
 431                 return -EINVAL;
 432         }
 433
 434         /* Check nb_event_queues is in limit */
 435         if (!dev_conf->nb_event_queues) {
 436                 RTE_EDEV_LOG_ERR("dev%d nb_event_queues cannot be zero",
 437                                         dev_id);
 438                 return -EINVAL;
 439         }
 440         if (dev_conf->nb_event_queues > info.max_event_queues) {
 441                 RTE_EDEV_LOG_ERR("%d nb_event_queues=%d > max_event_queues=%d",
 442                 dev_id, dev_conf->nb_event_queues, info.max_event_queues);
 443                 return -EINVAL;
 444         }
 445
 446         /* Check nb_event_ports is in limit */
 447         if (!dev_conf->nb_event_ports) {
 448                 RTE_EDEV_LOG_ERR("dev%d nb_event_ports cannot be zero", dev_id);
 449                 return -EINVAL;
 450         }
 451         if (dev_conf->nb_event_ports > info.max_event_ports) {
 452                 RTE_EDEV_LOG_ERR("id%d nb_event_ports=%d > max_event_ports= %d",
 453                 dev_id, dev_conf->nb_event_ports, info.max_event_ports);
 454                 return -EINVAL;
 455         }
 456
 457         /* Check nb_event_queue_flows is in limit */
 458         if (!dev_conf->nb_event_queue_flows) {
 459                 RTE_EDEV_LOG_ERR("dev%d nb_flows cannot be zero", dev_id);
 460                 return -EINVAL;
 461         }
 462         if (dev_conf->nb_event_queue_flows > info.max_event_queue_flows) {
 463                 RTE_EDEV_LOG_ERR("dev%d nb_flows=%x > max_flows=%x",
 464                 dev_id, dev_conf->nb_event_queue_flows,
 465                 info.max_event_queue_flows);
 466                 return -EINVAL;
 467         }
 468
 469         /* Check nb_event_port_dequeue_depth is in limit */
 470         if (!dev_conf->nb_event_port_dequeue_depth) {
 471                 RTE_EDEV_LOG_ERR("dev%d nb_dequeue_depth cannot be zero",
 472                                         dev_id);
 473                 return -EINVAL;
 474         }
 475         if ((info.event_dev_cap & RTE_EVENT_DEV_CAP_BURST_MODE) &&
 476                  (dev_conf->nb_event_port_dequeue_depth >
 477                          info.max_event_port_dequeue_depth)) {
 478                 RTE_EDEV_LOG_ERR("dev%d nb_dq_depth=%d > max_dq_depth=%d",
 479                 dev_id, dev_conf->nb_event_port_dequeue_depth,
 480                 info.max_event_port_dequeue_depth);
 481                 return -EINVAL;
 482         }
 483
 484         /* Check nb_event_port_enqueue_depth is in limit */
 485         if (!dev_conf->nb_event_port_enqueue_depth) {
 486                 RTE_EDEV_LOG_ERR("dev%d nb_enqueue_depth cannot be zero",
 487                                         dev_id);
 488                 return -EINVAL;
 489         }
 490         if ((info.event_dev_cap & RTE_EVENT_DEV_CAP_BURST_MODE) &&
 491                 (dev_conf->nb_event_port_enqueue_depth >
 492                          info.max_event_port_enqueue_depth)) {
 493                 RTE_EDEV_LOG_ERR("dev%d nb_enq_depth=%d > max_enq_depth=%d",
 494                 dev_id, dev_conf->nb_event_port_enqueue_depth,
 495                 info.max_event_port_enqueue_depth);
 496                 return -EINVAL;
 497         }
 498
 499         /* Copy the dev_conf parameter into the dev structure */
 500         memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
 501
 502         /* Setup new number of queues and reconfigure device. */
 503         diag = rte_event_dev_queue_config(dev, dev_conf->nb_event_queues);
 504         if (diag != 0) {
 505                 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_queue_config = %d",
 506                                 dev_id, diag);
 507                 return diag;
 508         }
 509
 510         /* Setup new number of ports and reconfigure device. */
 511         diag = rte_event_dev_port_config(dev, dev_conf->nb_event_ports);
 512         if (diag != 0) {
 513                 rte_event_dev_queue_config(dev, 0);
 514                 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_port_config = %d",
 515                                 dev_id, diag);
 516                 return diag;
 517         }
 518
 519         /* Configure the device */
 520         diag = (*dev->dev_ops->dev_configure)(dev);
 521         if (diag != 0) {
 522                 RTE_EDEV_LOG_ERR("dev%d dev_configure = %d", dev_id, diag);
 523                 rte_event_dev_queue_config(dev, 0);
 524                 rte_event_dev_port_config(dev, 0);
 525         }
 526
 527         dev->data->event_dev_cap = info.event_dev_cap;
 528         rte_eventdev_trace_configure(dev_id, dev_conf, diag);
 529         return diag;
 530 }
 531
 532 static inline int
 533 is_valid_queue(struct rte_eventdev *dev, uint8_t queue_id)
 534 {
 535         if (queue_id < dev->data->nb_queues && queue_id <
 536                                 RTE_EVENT_MAX_QUEUES_PER_DEV)
 537                 return 1;
 538         else
 539                 return 0;
 540 }
 541
 542 int
 543 rte_event_queue_default_conf_get(uint8_t dev_id, uint8_t queue_id,
 544                                  struct rte_event_queue_conf *queue_conf)
 545 {
 546         struct rte_eventdev *dev;
 547
 548         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 549         dev = &rte_eventdevs[dev_id];
 550
 551         if (queue_conf == NULL)
 552                 return -EINVAL;
 553
 554         if (!is_valid_queue(dev, queue_id)) {
 555                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 556                 return -EINVAL;
 557         }
 558
 559         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf, -ENOTSUP);
 560         memset(queue_conf, 0, sizeof(struct rte_event_queue_conf));
 561         (*dev->dev_ops->queue_def_conf)(dev, queue_id, queue_conf);
 562         return 0;
 563 }
 564
 565 static inline int
 566 is_valid_atomic_queue_conf(const struct rte_event_queue_conf *queue_conf)
 567 {
 568         if (queue_conf &&
 569                 !(queue_conf->event_queue_cfg &
 570                   RTE_EVENT_QUEUE_CFG_SINGLE_LINK) &&
 571                 ((queue_conf->event_queue_cfg &
 572                          RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 573                 (queue_conf->schedule_type
 574                         == RTE_SCHED_TYPE_ATOMIC)
 575                 ))
 576                 return 1;
 577         else
 578                 return 0;
 579 }
 580
 581 static inline int
 582 is_valid_ordered_queue_conf(const struct rte_event_queue_conf *queue_conf)
 583 {
 584         if (queue_conf &&
 585                 !(queue_conf->event_queue_cfg &
 586                   RTE_EVENT_QUEUE_CFG_SINGLE_LINK) &&
 587                 ((queue_conf->event_queue_cfg &
 588                          RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 589                 (queue_conf->schedule_type
 590                         == RTE_SCHED_TYPE_ORDERED)
 591                 ))
 592                 return 1;
 593         else
 594                 return 0;
 595 }
 596
 597
 598 int
 599 rte_event_queue_setup(uint8_t dev_id, uint8_t queue_id,
 600                       const struct rte_event_queue_conf *queue_conf)
 601 {
 602         struct rte_eventdev *dev;
 603         struct rte_event_queue_conf def_conf;
 604
 605         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 606         dev = &rte_eventdevs[dev_id];
 607
 608         if (!is_valid_queue(dev, queue_id)) {
 609                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 610                 return -EINVAL;
 611         }
 612
 613         /* Check nb_atomic_flows limit */
 614         if (is_valid_atomic_queue_conf(queue_conf)) {
 615                 if (queue_conf->nb_atomic_flows == 0 ||
 616                     queue_conf->nb_atomic_flows >
 617                         dev->data->dev_conf.nb_event_queue_flows) {
 618                         RTE_EDEV_LOG_ERR(
 619                 "dev%d queue%d Invalid nb_atomic_flows=%d max_flows=%d",
 620                         dev_id, queue_id, queue_conf->nb_atomic_flows,
 621                         dev->data->dev_conf.nb_event_queue_flows);
 622                         return -EINVAL;
 623                 }
 624         }
 625
 626         /* Check nb_atomic_order_sequences limit */
 627         if (is_valid_ordered_queue_conf(queue_conf)) {
 628                 if (queue_conf->nb_atomic_order_sequences == 0 ||
 629                     queue_conf->nb_atomic_order_sequences >
 630                         dev->data->dev_conf.nb_event_queue_flows) {
 631                         RTE_EDEV_LOG_ERR(
 632                 "dev%d queue%d Invalid nb_atomic_order_seq=%d max_flows=%d",
 633                         dev_id, queue_id, queue_conf->nb_atomic_order_sequences,
 634                         dev->data->dev_conf.nb_event_queue_flows);
 635                         return -EINVAL;
 636                 }
 637         }
 638
 639         if (dev->data->dev_started) {
 640                 RTE_EDEV_LOG_ERR(
 641                     "device %d must be stopped to allow queue setup", dev_id);
 642                 return -EBUSY;
 643         }
 644
 645         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_setup, -ENOTSUP);
 646
 647         if (queue_conf == NULL) {
 648                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf,
 649                                         -ENOTSUP);
 650                 (*dev->dev_ops->queue_def_conf)(dev, queue_id, &def_conf);
 651                 queue_conf = &def_conf;
 652         }
 653
 654         dev->data->queues_cfg[queue_id] = *queue_conf;
 655         rte_eventdev_trace_queue_setup(dev_id, queue_id, queue_conf);
 656         return (*dev->dev_ops->queue_setup)(dev, queue_id, queue_conf);
 657 }
 658
 659 static inline int
 660 is_valid_port(struct rte_eventdev *dev, uint8_t port_id)
 661 {
 662         if (port_id < dev->data->nb_ports)
 663                 return 1;
 664         else
 665                 return 0;
 666 }
 667
 668 int
 669 rte_event_port_default_conf_get(uint8_t dev_id, uint8_t port_id,
 670                                  struct rte_event_port_conf *port_conf)
 671 {
 672         struct rte_eventdev *dev;
 673
 674         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 675         dev = &rte_eventdevs[dev_id];
 676
 677         if (port_conf == NULL)
 678                 return -EINVAL;
 679
 680         if (!is_valid_port(dev, port_id)) {
 681                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 682                 return -EINVAL;
 683         }
 684
 685         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf, -ENOTSUP);
 686         memset(port_conf, 0, sizeof(struct rte_event_port_conf));
 687         (*dev->dev_ops->port_def_conf)(dev, port_id, port_conf);
 688         return 0;
 689 }
 690
 691 int
 692 rte_event_port_setup(uint8_t dev_id, uint8_t port_id,
 693                      const struct rte_event_port_conf *port_conf)
 694 {
 695         struct rte_eventdev *dev;
 696         struct rte_event_port_conf def_conf;
 697         int diag;
 698
 699         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 700         dev = &rte_eventdevs[dev_id];
 701
 702         if (!is_valid_port(dev, port_id)) {
 703                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 704                 return -EINVAL;
 705         }
 706
 707         /* Check new_event_threshold limit */
 708         if ((port_conf && !port_conf->new_event_threshold) ||
 709                         (port_conf && port_conf->new_event_threshold >
 710                                  dev->data->dev_conf.nb_events_limit)) {
 711                 RTE_EDEV_LOG_ERR(
 712                    "dev%d port%d Invalid event_threshold=%d nb_events_limit=%d",
 713                         dev_id, port_id, port_conf->new_event_threshold,
 714                         dev->data->dev_conf.nb_events_limit);
 715                 return -EINVAL;
 716         }
 717
 718         /* Check dequeue_depth limit */
 719         if ((port_conf && !port_conf->dequeue_depth) ||
 720                         (port_conf && port_conf->dequeue_depth >
 721                 dev->data->dev_conf.nb_event_port_dequeue_depth)) {
 722                 RTE_EDEV_LOG_ERR(
 723                    "dev%d port%d Invalid dequeue depth=%d max_dequeue_depth=%d",
 724                         dev_id, port_id, port_conf->dequeue_depth,
 725                         dev->data->dev_conf.nb_event_port_dequeue_depth);
 726                 return -EINVAL;
 727         }
 728
 729         /* Check enqueue_depth limit */
 730         if ((port_conf && !port_conf->enqueue_depth) ||
 731                         (port_conf && port_conf->enqueue_depth >
 732                 dev->data->dev_conf.nb_event_port_enqueue_depth)) {
 733                 RTE_EDEV_LOG_ERR(
 734                    "dev%d port%d Invalid enqueue depth=%d max_enqueue_depth=%d",
 735                         dev_id, port_id, port_conf->enqueue_depth,
 736                         dev->data->dev_conf.nb_event_port_enqueue_depth);
 737                 return -EINVAL;
 738         }
 739
 740         if (port_conf && port_conf->disable_implicit_release &&
 741             !(dev->data->event_dev_cap &
 742               RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE)) {
 743                 RTE_EDEV_LOG_ERR(
 744                    "dev%d port%d Implicit release disable not supported",
 745                         dev_id, port_id);
 746                 return -EINVAL;
 747         }
 748
 749         if (dev->data->dev_started) {
 750                 RTE_EDEV_LOG_ERR(
 751                     "device %d must be stopped to allow port setup", dev_id);
 752                 return -EBUSY;
 753         }
 754
 755         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_setup, -ENOTSUP);
 756
 757         if (port_conf == NULL) {
 758                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf,
 759                                         -ENOTSUP);
 760                 (*dev->dev_ops->port_def_conf)(dev, port_id, &def_conf);
 761                 port_conf = &def_conf;
 762         }
 763
 764         dev->data->ports_cfg[port_id] = *port_conf;
 765
 766         diag = (*dev->dev_ops->port_setup)(dev, port_id, port_conf);
 767
 768         /* Unlink all the queues from this port(default state after setup) */
 769         if (!diag)
 770                 diag = rte_event_port_unlink(dev_id, port_id, NULL, 0);
 771
 772         rte_eventdev_trace_port_setup(dev_id, port_id, port_conf, diag);
 773         if (diag < 0)
 774                 return diag;
 775
 776         return 0;
 777 }
 778
 779 int
 780 rte_event_dev_attr_get(uint8_t dev_id, uint32_t attr_id,
 781                        uint32_t *attr_value)
 782 {
 783         struct rte_eventdev *dev;
 784
 785         if (!attr_value)
 786                 return -EINVAL;
 787         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 788         dev = &rte_eventdevs[dev_id];
 789
 790         switch (attr_id) {
 791         case RTE_EVENT_DEV_ATTR_PORT_COUNT:
 792                 *attr_value = dev->data->nb_ports;
 793                 break;
 794         case RTE_EVENT_DEV_ATTR_QUEUE_COUNT:
 795                 *attr_value = dev->data->nb_queues;
 796                 break;
 797         case RTE_EVENT_DEV_ATTR_STARTED:
 798                 *attr_value = dev->data->dev_started;
 799                 break;
 800         default:
 801                 return -EINVAL;
 802         }
 803
 804         return 0;
 805 }
 806
 807 int
 808 rte_event_port_attr_get(uint8_t dev_id, uint8_t port_id, uint32_t attr_id,
 809                         uint32_t *attr_value)
 810 {
 811         struct rte_eventdev *dev;
 812
 813         if (!attr_value)
 814                 return -EINVAL;
 815
 816         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 817         dev = &rte_eventdevs[dev_id];
 818         if (!is_valid_port(dev, port_id)) {
 819                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 820                 return -EINVAL;
 821         }
 822
 823         switch (attr_id) {
 824         case RTE_EVENT_PORT_ATTR_ENQ_DEPTH:
 825                 *attr_value = dev->data->ports_cfg[port_id].enqueue_depth;
 826                 break;
 827         case RTE_EVENT_PORT_ATTR_DEQ_DEPTH:
 828                 *attr_value = dev->data->ports_cfg[port_id].dequeue_depth;
 829                 break;
 830         case RTE_EVENT_PORT_ATTR_NEW_EVENT_THRESHOLD:
 831                 *attr_value = dev->data->ports_cfg[port_id].new_event_threshold;
 832                 break;
 833         default:
 834                 return -EINVAL;
 835         };
 836         return 0;
 837 }
 838
 839 int
 840 rte_event_queue_attr_get(uint8_t dev_id, uint8_t queue_id, uint32_t attr_id,
 841                         uint32_t *attr_value)
 842 {
 843         struct rte_event_queue_conf *conf;
 844         struct rte_eventdev *dev;
 845
 846         if (!attr_value)
 847                 return -EINVAL;
 848
 849         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 850         dev = &rte_eventdevs[dev_id];
 851         if (!is_valid_queue(dev, queue_id)) {
 852                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 853                 return -EINVAL;
 854         }
 855
 856         conf = &dev->data->queues_cfg[queue_id];
 857
 858         switch (attr_id) {
 859         case RTE_EVENT_QUEUE_ATTR_PRIORITY:
 860                 *attr_value = RTE_EVENT_DEV_PRIORITY_NORMAL;
 861                 if (dev->data->event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_QOS)
 862                         *attr_value = conf->priority;
 863                 break;
 864         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_FLOWS:
 865                 *attr_value = conf->nb_atomic_flows;
 866                 break;
 867         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_ORDER_SEQUENCES:
 868                 *attr_value = conf->nb_atomic_order_sequences;
 869                 break;
 870         case RTE_EVENT_QUEUE_ATTR_EVENT_QUEUE_CFG:
 871                 *attr_value = conf->event_queue_cfg;
 872                 break;
 873         case RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE:
 874                 if (conf->event_queue_cfg & RTE_EVENT_QUEUE_CFG_ALL_TYPES)
 875                         return -EOVERFLOW;
 876
 877                 *attr_value = conf->schedule_type;
 878                 break;
 879         default:
 880                 return -EINVAL;
 881         };
 882         return 0;
 883 }
 884
 885 int
 886 rte_event_port_link(uint8_t dev_id, uint8_t port_id,
 887                     const uint8_t queues[], const uint8_t priorities[],
 888                     uint16_t nb_links)
 889 {
 890         struct rte_eventdev *dev;
 891         uint8_t queues_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 892         uint8_t priorities_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 893         uint16_t *links_map;
 894         int i, diag;
 895
 896         RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, EINVAL, 0);
 897         dev = &rte_eventdevs[dev_id];
 898
 899         if (*dev->dev_ops->port_link == NULL) {
 900                 RTE_EDEV_LOG_ERR("Function not supported\n");
 901                 rte_errno = ENOTSUP;
 902                 return 0;
 903         }
 904
 905         if (!is_valid_port(dev, port_id)) {
 906                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 907                 rte_errno = EINVAL;
 908                 return 0;
 909         }
 910
 911         if (queues == NULL) {
 912                 for (i = 0; i < dev->data->nb_queues; i++)
 913                         queues_list[i] = i;
 914
 915                 queues = queues_list;
 916                 nb_links = dev->data->nb_queues;
 917         }
 918
 919         if (priorities == NULL) {
 920                 for (i = 0; i < nb_links; i++)
 921                         priorities_list[i] = RTE_EVENT_DEV_PRIORITY_NORMAL;
 922
 923                 priorities = priorities_list;
 924         }
 925
 926         for (i = 0; i < nb_links; i++)
 927                 if (queues[i] >= dev->data->nb_queues) {
 928                         rte_errno = EINVAL;
 929                         return 0;
 930                 }
 931
 932         diag = (*dev->dev_ops->port_link)(dev, dev->data->ports[port_id],
 933                                                 queues, priorities, nb_links);
 934         if (diag < 0)
 935                 return diag;
 936
 937         links_map = dev->data->links_map;
 938         /* Point links_map to this port specific area */
 939         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 940         for (i = 0; i < diag; i++)
 941                 links_map[queues[i]] = (uint8_t)priorities[i];
 942
 943         rte_eventdev_trace_port_link(dev_id, port_id, nb_links, diag);
 944         return diag;
 945 }
 946
 947 int
 948 rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
 949                       uint8_t queues[], uint16_t nb_unlinks)
 950 {
 951         struct rte_eventdev *dev;
 952         uint8_t all_queues[RTE_EVENT_MAX_QUEUES_PER_DEV];
 953         int i, diag, j;
 954         uint16_t *links_map;
 955
 956         RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, EINVAL, 0);
 957         dev = &rte_eventdevs[dev_id];
 958
 959         if (*dev->dev_ops->port_unlink == NULL) {
 960                 RTE_EDEV_LOG_ERR("Function not supported");
 961                 rte_errno = ENOTSUP;
 962                 return 0;
 963         }
 964
 965         if (!is_valid_port(dev, port_id)) {
 966                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 967                 rte_errno = EINVAL;
 968                 return 0;
 969         }
 970
 971         links_map = dev->data->links_map;
 972         /* Point links_map to this port specific area */
 973         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 974
 975         if (queues == NULL) {
 976                 j = 0;
 977                 for (i = 0; i < dev->data->nb_queues; i++) {
 978                         if (links_map[i] !=
 979                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
 980                                 all_queues[j] = i;
 981                                 j++;
 982                         }
 983                 }
 984                 queues = all_queues;
 985         } else {
 986                 for (j = 0; j < nb_unlinks; j++) {
 987                         if (links_map[queues[j]] ==
 988                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID)
 989                                 break;
 990                 }
 991         }
 992
 993         nb_unlinks = j;
 994         for (i = 0; i < nb_unlinks; i++)
 995                 if (queues[i] >= dev->data->nb_queues) {
 996                         rte_errno = EINVAL;
 997                         return 0;
 998                 }
 999
1000         diag = (*dev->dev_ops->port_unlink)(dev, dev->data->ports[port_id],
1001                                         queues, nb_unlinks);
1002
1003         if (diag < 0)
1004                 return diag;
1005
1006         for (i = 0; i < diag; i++)
1007                 links_map[queues[i]] = EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
1008
1009         rte_eventdev_trace_port_unlink(dev_id, port_id, nb_unlinks, diag);
1010         return diag;
1011 }
1012
1013 int
1014 rte_event_port_unlinks_in_progress(uint8_t dev_id, uint8_t port_id)
1015 {
1016         struct rte_eventdev *dev;
1017
1018         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1019         dev = &rte_eventdevs[dev_id];
1020         if (!is_valid_port(dev, port_id)) {
1021                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
1022                 return -EINVAL;
1023         }
1024
1025         /* Return 0 if the PMD does not implement unlinks in progress.
1026          * This allows PMDs which handle unlink synchronously to not implement
1027          * this function at all.
1028          */
1029         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_unlinks_in_progress, 0);
1030
1031         return (*dev->dev_ops->port_unlinks_in_progress)(dev,
1032                         dev->data->ports[port_id]);
1033 }
1034
1035 int
1036 rte_event_port_links_get(uint8_t dev_id, uint8_t port_id,
1037                          uint8_t queues[], uint8_t priorities[])
1038 {
1039         struct rte_eventdev *dev;
1040         uint16_t *links_map;
1041         int i, count = 0;
1042
1043         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1044         dev = &rte_eventdevs[dev_id];
1045         if (!is_valid_port(dev, port_id)) {
1046                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
1047                 return -EINVAL;
1048         }
1049
1050         links_map = dev->data->links_map;
1051         /* Point links_map to this port specific area */
1052         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
1053         for (i = 0; i < dev->data->nb_queues; i++) {
1054                 if (links_map[i] != EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
1055                         queues[count] = i;
1056                         priorities[count] = (uint8_t)links_map[i];
1057                         ++count;
1058                 }
1059         }
1060         return count;
1061 }
1062
1063 int
1064 rte_event_dequeue_timeout_ticks(uint8_t dev_id, uint64_t ns,
1065                                  uint64_t *timeout_ticks)
1066 {
1067         struct rte_eventdev *dev;
1068
1069         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1070         dev = &rte_eventdevs[dev_id];
1071         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timeout_ticks, -ENOTSUP);
1072
1073         if (timeout_ticks == NULL)
1074                 return -EINVAL;
1075
1076         return (*dev->dev_ops->timeout_ticks)(dev, ns, timeout_ticks);
1077 }
1078
1079 int
1080 rte_event_dev_service_id_get(uint8_t dev_id, uint32_t *service_id)
1081 {
1082         struct rte_eventdev *dev;
1083
1084         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1085         dev = &rte_eventdevs[dev_id];
1086
1087         if (service_id == NULL)
1088                 return -EINVAL;
1089
1090         if (dev->data->service_inited)
1091                 *service_id = dev->data->service_id;
1092
1093         return dev->data->service_inited ? 0 : -ESRCH;
1094 }
1095
1096 int
1097 rte_event_dev_dump(uint8_t dev_id, FILE *f)
1098 {
1099         struct rte_eventdev *dev;
1100
1101         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1102         dev = &rte_eventdevs[dev_id];
1103         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dump, -ENOTSUP);
1104
1105         (*dev->dev_ops->dump)(dev, f);
1106         return 0;
1107
1108 }
1109
1110 static int
1111 xstats_get_count(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
1112                 uint8_t queue_port_id)
1113 {
1114         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1115         if (dev->dev_ops->xstats_get_names != NULL)
1116                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
1117                                                         queue_port_id,
1118                                                         NULL, NULL, 0);
1119         return 0;
1120 }
1121
1122 int
1123 rte_event_dev_xstats_names_get(uint8_t dev_id,
1124                 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
1125                 struct rte_event_dev_xstats_name *xstats_names,
1126                 unsigned int *ids, unsigned int size)
1127 {
1128         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
1129         const int cnt_expected_entries = xstats_get_count(dev_id, mode,
1130                                                           queue_port_id);
1131         if (xstats_names == NULL || cnt_expected_entries < 0 ||
1132                         (int)size < cnt_expected_entries)
1133                 return cnt_expected_entries;
1134
1135         /* dev_id checked above */
1136         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1137
1138         if (dev->dev_ops->xstats_get_names != NULL)
1139                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
1140                                 queue_port_id, xstats_names, ids, size);
1141
1142         return -ENOTSUP;
1143 }
1144
1145 /* retrieve eventdev extended statistics */
1146 int
1147 rte_event_dev_xstats_get(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
1148                 uint8_t queue_port_id, const unsigned int ids[],
1149                 uint64_t values[], unsigned int n)
1150 {
1151         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
1152         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1153
1154         /* implemented by the driver */
1155         if (dev->dev_ops->xstats_get != NULL)
1156                 return (*dev->dev_ops->xstats_get)(dev, mode, queue_port_id,
1157                                 ids, values, n);
1158         return -ENOTSUP;
1159 }
1160
1161 uint64_t
1162 rte_event_dev_xstats_by_name_get(uint8_t dev_id, const char *name,
1163                 unsigned int *id)
1164 {
1165         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, 0);
1166         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1167         unsigned int temp = -1;
1168
1169         if (id != NULL)
1170                 *id = (unsigned int)-1;
1171         else
1172                 id = &temp; /* ensure driver never gets a NULL value */
1173
1174         /* implemented by driver */
1175         if (dev->dev_ops->xstats_get_by_name != NULL)
1176                 return (*dev->dev_ops->xstats_get_by_name)(dev, name, id);
1177         return -ENOTSUP;
1178 }
1179
1180 int rte_event_dev_xstats_reset(uint8_t dev_id,
1181                 enum rte_event_dev_xstats_mode mode, int16_t queue_port_id,
1182                 const uint32_t ids[], uint32_t nb_ids)
1183 {
1184         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1185         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1186
1187         if (dev->dev_ops->xstats_reset != NULL)
1188                 return (*dev->dev_ops->xstats_reset)(dev, mode, queue_port_id,
1189                                                         ids, nb_ids);
1190         return -ENOTSUP;
1191 }
1192
1193 int rte_event_dev_selftest(uint8_t dev_id)
1194 {
1195         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1196         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1197
1198         if (dev->dev_ops->dev_selftest != NULL)
1199                 return (*dev->dev_ops->dev_selftest)();
1200         return -ENOTSUP;
1201 }
1202
1203 int
1204 rte_event_dev_start(uint8_t dev_id)
1205 {
1206         struct rte_eventdev *dev;
1207         int diag;
1208
1209         RTE_EDEV_LOG_DEBUG("Start dev_id=%" PRIu8, dev_id);
1210
1211         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1212         dev = &rte_eventdevs[dev_id];
1213         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
1214
1215         if (dev->data->dev_started != 0) {
1216                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already started",
1217                         dev_id);
1218                 return 0;
1219         }
1220
1221         diag = (*dev->dev_ops->dev_start)(dev);
1222         rte_eventdev_trace_start(dev_id, diag);
1223         if (diag == 0)
1224                 dev->data->dev_started = 1;
1225         else
1226                 return diag;
1227
1228         return 0;
1229 }
1230
1231 int
1232 rte_event_dev_stop_flush_callback_register(uint8_t dev_id,
1233                 eventdev_stop_flush_t callback, void *userdata)
1234 {
1235         struct rte_eventdev *dev;
1236
1237         RTE_EDEV_LOG_DEBUG("Stop flush register dev_id=%" PRIu8, dev_id);
1238
1239         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1240         dev = &rte_eventdevs[dev_id];
1241
1242         dev->dev_ops->dev_stop_flush = callback;
1243         dev->data->dev_stop_flush_arg = userdata;
1244
1245         return 0;
1246 }
1247
1248 void
1249 rte_event_dev_stop(uint8_t dev_id)
1250 {
1251         struct rte_eventdev *dev;
1252
1253         RTE_EDEV_LOG_DEBUG("Stop dev_id=%" PRIu8, dev_id);
1254
1255         RTE_EVENTDEV_VALID_DEVID_OR_RET(dev_id);
1256         dev = &rte_eventdevs[dev_id];
1257         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
1258
1259         if (dev->data->dev_started == 0) {
1260                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already stopped",
1261                         dev_id);
1262                 return;
1263         }
1264
1265         dev->data->dev_started = 0;
1266         (*dev->dev_ops->dev_stop)(dev);
1267         rte_eventdev_trace_stop(dev_id);
1268 }
1269
1270 int
1271 rte_event_dev_close(uint8_t dev_id)
1272 {
1273         struct rte_eventdev *dev;
1274
1275         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1276         dev = &rte_eventdevs[dev_id];
1277         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
1278
1279         /* Device must be stopped before it can be closed */
1280         if (dev->data->dev_started == 1) {
1281                 RTE_EDEV_LOG_ERR("Device %u must be stopped before closing",
1282                                 dev_id);
1283                 return -EBUSY;
1284         }
1285
1286         rte_eventdev_trace_close(dev_id);
1287         return (*dev->dev_ops->dev_close)(dev);
1288 }
1289
1290 static inline int
1291 rte_eventdev_data_alloc(uint8_t dev_id, struct rte_eventdev_data **data,
1292                 int socket_id)
1293 {
1294         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1295         const struct rte_memzone *mz;
1296         int n;
1297
1298         /* Generate memzone name */
1299         n = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u", dev_id);
1300         if (n >= (int)sizeof(mz_name))
1301                 return -EINVAL;
1302
1303         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1304                 mz = rte_memzone_reserve(mz_name,
1305                                 sizeof(struct rte_eventdev_data),
1306                                 socket_id, 0);
1307         } else
1308                 mz = rte_memzone_lookup(mz_name);
1309
1310         if (mz == NULL)
1311                 return -ENOMEM;
1312
1313         *data = mz->addr;
1314         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1315                 memset(*data, 0, sizeof(struct rte_eventdev_data));
1316
1317         return 0;
1318 }
1319
1320 static inline uint8_t
1321 rte_eventdev_find_free_device_index(void)
1322 {
1323         uint8_t dev_id;
1324
1325         for (dev_id = 0; dev_id < RTE_EVENT_MAX_DEVS; dev_id++) {
1326                 if (rte_eventdevs[dev_id].attached ==
1327                                 RTE_EVENTDEV_DETACHED)
1328                         return dev_id;
1329         }
1330         return RTE_EVENT_MAX_DEVS;
1331 }
1332
1333 static uint16_t
1334 rte_event_tx_adapter_enqueue(__rte_unused void *port,
1335                         __rte_unused struct rte_event ev[],
1336                         __rte_unused uint16_t nb_events)
1337 {
1338         rte_errno = ENOTSUP;
1339         return 0;
1340 }
1341
1342 struct rte_eventdev *
1343 rte_event_pmd_allocate(const char *name, int socket_id)
1344 {
1345         struct rte_eventdev *eventdev;
1346         uint8_t dev_id;
1347
1348         if (rte_event_pmd_get_named_dev(name) != NULL) {
1349                 RTE_EDEV_LOG_ERR("Event device with name %s already "
1350                                 "allocated!", name);
1351                 return NULL;
1352         }
1353
1354         dev_id = rte_eventdev_find_free_device_index();
1355         if (dev_id == RTE_EVENT_MAX_DEVS) {
1356                 RTE_EDEV_LOG_ERR("Reached maximum number of event devices");
1357                 return NULL;
1358         }
1359
1360         eventdev = &rte_eventdevs[dev_id];
1361
1362         eventdev->txa_enqueue = rte_event_tx_adapter_enqueue;
1363         eventdev->txa_enqueue_same_dest = rte_event_tx_adapter_enqueue;
1364
1365         if (eventdev->data == NULL) {
1366                 struct rte_eventdev_data *eventdev_data = NULL;
1367
1368                 int retval = rte_eventdev_data_alloc(dev_id, &eventdev_data,
1369                                 socket_id);
1370
1371                 if (retval < 0 || eventdev_data == NULL)
1372                         return NULL;
1373
1374                 eventdev->data = eventdev_data;
1375
1376                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1377
1378                         strlcpy(eventdev->data->name, name,
1379                                 RTE_EVENTDEV_NAME_MAX_LEN);
1380
1381                         eventdev->data->dev_id = dev_id;
1382                         eventdev->data->socket_id = socket_id;
1383                         eventdev->data->dev_started = 0;
1384                 }
1385
1386                 eventdev->attached = RTE_EVENTDEV_ATTACHED;
1387                 eventdev_globals.nb_devs++;
1388         }
1389
1390         return eventdev;
1391 }
1392
1393 int
1394 rte_event_pmd_release(struct rte_eventdev *eventdev)
1395 {
1396         int ret;
1397         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1398         const struct rte_memzone *mz;
1399
1400         if (eventdev == NULL)
1401                 return -EINVAL;
1402
1403         eventdev->attached = RTE_EVENTDEV_DETACHED;
1404         eventdev_globals.nb_devs--;
1405
1406         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1407                 rte_free(eventdev->data->dev_private);
1408
1409                 /* Generate memzone name */
1410                 ret = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u",
1411                                 eventdev->data->dev_id);
1412                 if (ret >= (int)sizeof(mz_name))
1413                         return -EINVAL;
1414
1415                 mz = rte_memzone_lookup(mz_name);
1416                 if (mz == NULL)
1417                         return -ENOMEM;
1418
1419                 ret = rte_memzone_free(mz);
1420                 if (ret)
1421                         return ret;
1422         }
1423
1424         eventdev->data = NULL;
1425         return 0;
1426 }