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_byteorder.h>
  17 #include <rte_log.h>
  18 #include <rte_debug.h>
  19 #include <rte_dev.h>
  20 #include <rte_memory.h>
  21 #include <rte_memcpy.h>
  22 #include <rte_memzone.h>
  23 #include <rte_eal.h>
  24 #include <rte_per_lcore.h>
  25 #include <rte_lcore.h>
  26 #include <rte_atomic.h>
  27 #include <rte_branch_prediction.h>
  28 #include <rte_common.h>
  29 #include <rte_malloc.h>
  30 #include <rte_errno.h>
  31 #include <rte_ethdev.h>
  32 #include <rte_cryptodev.h>
  33 #include <rte_cryptodev_pmd.h>
  34
  35 #include "rte_eventdev.h"
  36 #include "rte_eventdev_pmd.h"
  37
  38 static struct rte_eventdev rte_event_devices[RTE_EVENT_MAX_DEVS];
  39
  40 struct rte_eventdev *rte_eventdevs = &rte_event_devices[0];
  41
  42 static struct rte_eventdev_global eventdev_globals = {
  43         .nb_devs                = 0
  44 };
  45
  46 struct rte_eventdev_global *rte_eventdev_globals = &eventdev_globals;
  47
  48 /* Event dev north bound API implementation */
  49
  50 uint8_t
  51 rte_event_dev_count(void)
  52 {
  53         return rte_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 < rte_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 __rte_experimental
 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 __rte_experimental
 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 __rte_experimental
 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         return diag;
 529 }
 530
 531 static inline int
 532 is_valid_queue(struct rte_eventdev *dev, uint8_t queue_id)
 533 {
 534         if (queue_id < dev->data->nb_queues && queue_id <
 535                                 RTE_EVENT_MAX_QUEUES_PER_DEV)
 536                 return 1;
 537         else
 538                 return 0;
 539 }
 540
 541 int
 542 rte_event_queue_default_conf_get(uint8_t dev_id, uint8_t queue_id,
 543                                  struct rte_event_queue_conf *queue_conf)
 544 {
 545         struct rte_eventdev *dev;
 546
 547         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 548         dev = &rte_eventdevs[dev_id];
 549
 550         if (queue_conf == NULL)
 551                 return -EINVAL;
 552
 553         if (!is_valid_queue(dev, queue_id)) {
 554                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 555                 return -EINVAL;
 556         }
 557
 558         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf, -ENOTSUP);
 559         memset(queue_conf, 0, sizeof(struct rte_event_queue_conf));
 560         (*dev->dev_ops->queue_def_conf)(dev, queue_id, queue_conf);
 561         return 0;
 562 }
 563
 564 static inline int
 565 is_valid_atomic_queue_conf(const struct rte_event_queue_conf *queue_conf)
 566 {
 567         if (queue_conf &&
 568                 !(queue_conf->event_queue_cfg &
 569                   RTE_EVENT_QUEUE_CFG_SINGLE_LINK) &&
 570                 ((queue_conf->event_queue_cfg &
 571                          RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 572                 (queue_conf->schedule_type
 573                         == RTE_SCHED_TYPE_ATOMIC)
 574                 ))
 575                 return 1;
 576         else
 577                 return 0;
 578 }
 579
 580 static inline int
 581 is_valid_ordered_queue_conf(const struct rte_event_queue_conf *queue_conf)
 582 {
 583         if (queue_conf &&
 584                 !(queue_conf->event_queue_cfg &
 585                   RTE_EVENT_QUEUE_CFG_SINGLE_LINK) &&
 586                 ((queue_conf->event_queue_cfg &
 587                          RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
 588                 (queue_conf->schedule_type
 589                         == RTE_SCHED_TYPE_ORDERED)
 590                 ))
 591                 return 1;
 592         else
 593                 return 0;
 594 }
 595
 596
 597 int
 598 rte_event_queue_setup(uint8_t dev_id, uint8_t queue_id,
 599                       const struct rte_event_queue_conf *queue_conf)
 600 {
 601         struct rte_eventdev *dev;
 602         struct rte_event_queue_conf def_conf;
 603
 604         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 605         dev = &rte_eventdevs[dev_id];
 606
 607         if (!is_valid_queue(dev, queue_id)) {
 608                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 609                 return -EINVAL;
 610         }
 611
 612         /* Check nb_atomic_flows limit */
 613         if (is_valid_atomic_queue_conf(queue_conf)) {
 614                 if (queue_conf->nb_atomic_flows == 0 ||
 615                     queue_conf->nb_atomic_flows >
 616                         dev->data->dev_conf.nb_event_queue_flows) {
 617                         RTE_EDEV_LOG_ERR(
 618                 "dev%d queue%d Invalid nb_atomic_flows=%d max_flows=%d",
 619                         dev_id, queue_id, queue_conf->nb_atomic_flows,
 620                         dev->data->dev_conf.nb_event_queue_flows);
 621                         return -EINVAL;
 622                 }
 623         }
 624
 625         /* Check nb_atomic_order_sequences limit */
 626         if (is_valid_ordered_queue_conf(queue_conf)) {
 627                 if (queue_conf->nb_atomic_order_sequences == 0 ||
 628                     queue_conf->nb_atomic_order_sequences >
 629                         dev->data->dev_conf.nb_event_queue_flows) {
 630                         RTE_EDEV_LOG_ERR(
 631                 "dev%d queue%d Invalid nb_atomic_order_seq=%d max_flows=%d",
 632                         dev_id, queue_id, queue_conf->nb_atomic_order_sequences,
 633                         dev->data->dev_conf.nb_event_queue_flows);
 634                         return -EINVAL;
 635                 }
 636         }
 637
 638         if (dev->data->dev_started) {
 639                 RTE_EDEV_LOG_ERR(
 640                     "device %d must be stopped to allow queue setup", dev_id);
 641                 return -EBUSY;
 642         }
 643
 644         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_setup, -ENOTSUP);
 645
 646         if (queue_conf == NULL) {
 647                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf,
 648                                         -ENOTSUP);
 649                 (*dev->dev_ops->queue_def_conf)(dev, queue_id, &def_conf);
 650                 queue_conf = &def_conf;
 651         }
 652
 653         dev->data->queues_cfg[queue_id] = *queue_conf;
 654         return (*dev->dev_ops->queue_setup)(dev, queue_id, queue_conf);
 655 }
 656
 657 static inline int
 658 is_valid_port(struct rte_eventdev *dev, uint8_t port_id)
 659 {
 660         if (port_id < dev->data->nb_ports)
 661                 return 1;
 662         else
 663                 return 0;
 664 }
 665
 666 int
 667 rte_event_port_default_conf_get(uint8_t dev_id, uint8_t port_id,
 668                                  struct rte_event_port_conf *port_conf)
 669 {
 670         struct rte_eventdev *dev;
 671
 672         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 673         dev = &rte_eventdevs[dev_id];
 674
 675         if (port_conf == NULL)
 676                 return -EINVAL;
 677
 678         if (!is_valid_port(dev, port_id)) {
 679                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 680                 return -EINVAL;
 681         }
 682
 683         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf, -ENOTSUP);
 684         memset(port_conf, 0, sizeof(struct rte_event_port_conf));
 685         (*dev->dev_ops->port_def_conf)(dev, port_id, port_conf);
 686         return 0;
 687 }
 688
 689 int
 690 rte_event_port_setup(uint8_t dev_id, uint8_t port_id,
 691                      const struct rte_event_port_conf *port_conf)
 692 {
 693         struct rte_eventdev *dev;
 694         struct rte_event_port_conf def_conf;
 695         int diag;
 696
 697         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 698         dev = &rte_eventdevs[dev_id];
 699
 700         if (!is_valid_port(dev, port_id)) {
 701                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 702                 return -EINVAL;
 703         }
 704
 705         /* Check new_event_threshold limit */
 706         if ((port_conf && !port_conf->new_event_threshold) ||
 707                         (port_conf && port_conf->new_event_threshold >
 708                                  dev->data->dev_conf.nb_events_limit)) {
 709                 RTE_EDEV_LOG_ERR(
 710                    "dev%d port%d Invalid event_threshold=%d nb_events_limit=%d",
 711                         dev_id, port_id, port_conf->new_event_threshold,
 712                         dev->data->dev_conf.nb_events_limit);
 713                 return -EINVAL;
 714         }
 715
 716         /* Check dequeue_depth limit */
 717         if ((port_conf && !port_conf->dequeue_depth) ||
 718                         (port_conf && port_conf->dequeue_depth >
 719                 dev->data->dev_conf.nb_event_port_dequeue_depth)) {
 720                 RTE_EDEV_LOG_ERR(
 721                    "dev%d port%d Invalid dequeue depth=%d max_dequeue_depth=%d",
 722                         dev_id, port_id, port_conf->dequeue_depth,
 723                         dev->data->dev_conf.nb_event_port_dequeue_depth);
 724                 return -EINVAL;
 725         }
 726
 727         /* Check enqueue_depth limit */
 728         if ((port_conf && !port_conf->enqueue_depth) ||
 729                         (port_conf && port_conf->enqueue_depth >
 730                 dev->data->dev_conf.nb_event_port_enqueue_depth)) {
 731                 RTE_EDEV_LOG_ERR(
 732                    "dev%d port%d Invalid enqueue depth=%d max_enqueue_depth=%d",
 733                         dev_id, port_id, port_conf->enqueue_depth,
 734                         dev->data->dev_conf.nb_event_port_enqueue_depth);
 735                 return -EINVAL;
 736         }
 737
 738         if (port_conf && port_conf->disable_implicit_release &&
 739             !(dev->data->event_dev_cap &
 740               RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE)) {
 741                 RTE_EDEV_LOG_ERR(
 742                    "dev%d port%d Implicit release disable not supported",
 743                         dev_id, port_id);
 744                 return -EINVAL;
 745         }
 746
 747         if (dev->data->dev_started) {
 748                 RTE_EDEV_LOG_ERR(
 749                     "device %d must be stopped to allow port setup", dev_id);
 750                 return -EBUSY;
 751         }
 752
 753         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_setup, -ENOTSUP);
 754
 755         if (port_conf == NULL) {
 756                 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf,
 757                                         -ENOTSUP);
 758                 (*dev->dev_ops->port_def_conf)(dev, port_id, &def_conf);
 759                 port_conf = &def_conf;
 760         }
 761
 762         dev->data->ports_cfg[port_id] = *port_conf;
 763
 764         diag = (*dev->dev_ops->port_setup)(dev, port_id, port_conf);
 765
 766         /* Unlink all the queues from this port(default state after setup) */
 767         if (!diag)
 768                 diag = rte_event_port_unlink(dev_id, port_id, NULL, 0);
 769
 770         if (diag < 0)
 771                 return diag;
 772
 773         return 0;
 774 }
 775
 776 int
 777 rte_event_dev_attr_get(uint8_t dev_id, uint32_t attr_id,
 778                        uint32_t *attr_value)
 779 {
 780         struct rte_eventdev *dev;
 781
 782         if (!attr_value)
 783                 return -EINVAL;
 784         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 785         dev = &rte_eventdevs[dev_id];
 786
 787         switch (attr_id) {
 788         case RTE_EVENT_DEV_ATTR_PORT_COUNT:
 789                 *attr_value = dev->data->nb_ports;
 790                 break;
 791         case RTE_EVENT_DEV_ATTR_QUEUE_COUNT:
 792                 *attr_value = dev->data->nb_queues;
 793                 break;
 794         case RTE_EVENT_DEV_ATTR_STARTED:
 795                 *attr_value = dev->data->dev_started;
 796                 break;
 797         default:
 798                 return -EINVAL;
 799         }
 800
 801         return 0;
 802 }
 803
 804 int
 805 rte_event_port_attr_get(uint8_t dev_id, uint8_t port_id, uint32_t attr_id,
 806                         uint32_t *attr_value)
 807 {
 808         struct rte_eventdev *dev;
 809
 810         if (!attr_value)
 811                 return -EINVAL;
 812
 813         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 814         dev = &rte_eventdevs[dev_id];
 815         if (!is_valid_port(dev, port_id)) {
 816                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 817                 return -EINVAL;
 818         }
 819
 820         switch (attr_id) {
 821         case RTE_EVENT_PORT_ATTR_ENQ_DEPTH:
 822                 *attr_value = dev->data->ports_cfg[port_id].enqueue_depth;
 823                 break;
 824         case RTE_EVENT_PORT_ATTR_DEQ_DEPTH:
 825                 *attr_value = dev->data->ports_cfg[port_id].dequeue_depth;
 826                 break;
 827         case RTE_EVENT_PORT_ATTR_NEW_EVENT_THRESHOLD:
 828                 *attr_value = dev->data->ports_cfg[port_id].new_event_threshold;
 829                 break;
 830         default:
 831                 return -EINVAL;
 832         };
 833         return 0;
 834 }
 835
 836 int
 837 rte_event_queue_attr_get(uint8_t dev_id, uint8_t queue_id, uint32_t attr_id,
 838                         uint32_t *attr_value)
 839 {
 840         struct rte_event_queue_conf *conf;
 841         struct rte_eventdev *dev;
 842
 843         if (!attr_value)
 844                 return -EINVAL;
 845
 846         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
 847         dev = &rte_eventdevs[dev_id];
 848         if (!is_valid_queue(dev, queue_id)) {
 849                 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
 850                 return -EINVAL;
 851         }
 852
 853         conf = &dev->data->queues_cfg[queue_id];
 854
 855         switch (attr_id) {
 856         case RTE_EVENT_QUEUE_ATTR_PRIORITY:
 857                 *attr_value = RTE_EVENT_DEV_PRIORITY_NORMAL;
 858                 if (dev->data->event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_QOS)
 859                         *attr_value = conf->priority;
 860                 break;
 861         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_FLOWS:
 862                 *attr_value = conf->nb_atomic_flows;
 863                 break;
 864         case RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_ORDER_SEQUENCES:
 865                 *attr_value = conf->nb_atomic_order_sequences;
 866                 break;
 867         case RTE_EVENT_QUEUE_ATTR_EVENT_QUEUE_CFG:
 868                 *attr_value = conf->event_queue_cfg;
 869                 break;
 870         case RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE:
 871                 if (conf->event_queue_cfg & RTE_EVENT_QUEUE_CFG_ALL_TYPES)
 872                         return -EOVERFLOW;
 873
 874                 *attr_value = conf->schedule_type;
 875                 break;
 876         default:
 877                 return -EINVAL;
 878         };
 879         return 0;
 880 }
 881
 882 int
 883 rte_event_port_link(uint8_t dev_id, uint8_t port_id,
 884                     const uint8_t queues[], const uint8_t priorities[],
 885                     uint16_t nb_links)
 886 {
 887         struct rte_eventdev *dev;
 888         uint8_t queues_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 889         uint8_t priorities_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
 890         uint16_t *links_map;
 891         int i, diag;
 892
 893         RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, -EINVAL, 0);
 894         dev = &rte_eventdevs[dev_id];
 895
 896         if (*dev->dev_ops->port_link == NULL) {
 897                 RTE_PMD_DEBUG_TRACE("Function not supported\n");
 898                 rte_errno = -ENOTSUP;
 899                 return 0;
 900         }
 901
 902         if (!is_valid_port(dev, port_id)) {
 903                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 904                 rte_errno = -EINVAL;
 905                 return 0;
 906         }
 907
 908         if (queues == NULL) {
 909                 for (i = 0; i < dev->data->nb_queues; i++)
 910                         queues_list[i] = i;
 911
 912                 queues = queues_list;
 913                 nb_links = dev->data->nb_queues;
 914         }
 915
 916         if (priorities == NULL) {
 917                 for (i = 0; i < nb_links; i++)
 918                         priorities_list[i] = RTE_EVENT_DEV_PRIORITY_NORMAL;
 919
 920                 priorities = priorities_list;
 921         }
 922
 923         for (i = 0; i < nb_links; i++)
 924                 if (queues[i] >= dev->data->nb_queues) {
 925                         rte_errno = -EINVAL;
 926                         return 0;
 927                 }
 928
 929         diag = (*dev->dev_ops->port_link)(dev, dev->data->ports[port_id],
 930                                                 queues, priorities, nb_links);
 931         if (diag < 0)
 932                 return diag;
 933
 934         links_map = dev->data->links_map;
 935         /* Point links_map to this port specific area */
 936         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 937         for (i = 0; i < diag; i++)
 938                 links_map[queues[i]] = (uint8_t)priorities[i];
 939
 940         return diag;
 941 }
 942
 943 int
 944 rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
 945                       uint8_t queues[], uint16_t nb_unlinks)
 946 {
 947         struct rte_eventdev *dev;
 948         uint8_t all_queues[RTE_EVENT_MAX_QUEUES_PER_DEV];
 949         int i, diag, j;
 950         uint16_t *links_map;
 951
 952         RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, -EINVAL, 0);
 953         dev = &rte_eventdevs[dev_id];
 954
 955         if (*dev->dev_ops->port_unlink == NULL) {
 956                 RTE_PMD_DEBUG_TRACE("Function not supported\n");
 957                 rte_errno = -ENOTSUP;
 958                 return 0;
 959         }
 960
 961         if (!is_valid_port(dev, port_id)) {
 962                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
 963                 rte_errno = -EINVAL;
 964                 return 0;
 965         }
 966
 967         links_map = dev->data->links_map;
 968         /* Point links_map to this port specific area */
 969         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
 970
 971         if (queues == NULL) {
 972                 j = 0;
 973                 for (i = 0; i < dev->data->nb_queues; i++) {
 974                         if (links_map[i] !=
 975                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
 976                                 all_queues[j] = i;
 977                                 j++;
 978                         }
 979                 }
 980                 queues = all_queues;
 981         } else {
 982                 for (j = 0; j < nb_unlinks; j++) {
 983                         if (links_map[queues[j]] ==
 984                                         EVENT_QUEUE_SERVICE_PRIORITY_INVALID)
 985                                 break;
 986                 }
 987         }
 988
 989         nb_unlinks = j;
 990         for (i = 0; i < nb_unlinks; i++)
 991                 if (queues[i] >= dev->data->nb_queues) {
 992                         rte_errno = -EINVAL;
 993                         return 0;
 994                 }
 995
 996         diag = (*dev->dev_ops->port_unlink)(dev, dev->data->ports[port_id],
 997                                         queues, nb_unlinks);
 998
 999         if (diag < 0)
1000                 return diag;
1001
1002         for (i = 0; i < diag; i++)
1003                 links_map[queues[i]] = EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
1004
1005         return diag;
1006 }
1007
1008 int __rte_experimental
1009 rte_event_port_unlinks_in_progress(uint8_t dev_id, uint8_t port_id)
1010 {
1011         struct rte_eventdev *dev;
1012
1013         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1014         dev = &rte_eventdevs[dev_id];
1015         if (!is_valid_port(dev, port_id)) {
1016                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
1017                 return -EINVAL;
1018         }
1019
1020         /* Return 0 if the PMD does not implement unlinks in progress.
1021          * This allows PMDs which handle unlink synchronously to not implement
1022          * this function at all.
1023          */
1024         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_unlinks_in_progress, 0);
1025
1026         return (*dev->dev_ops->port_unlinks_in_progress)(dev,
1027                         dev->data->ports[port_id]);
1028 }
1029
1030 int
1031 rte_event_port_links_get(uint8_t dev_id, uint8_t port_id,
1032                          uint8_t queues[], uint8_t priorities[])
1033 {
1034         struct rte_eventdev *dev;
1035         uint16_t *links_map;
1036         int i, count = 0;
1037
1038         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1039         dev = &rte_eventdevs[dev_id];
1040         if (!is_valid_port(dev, port_id)) {
1041                 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
1042                 return -EINVAL;
1043         }
1044
1045         links_map = dev->data->links_map;
1046         /* Point links_map to this port specific area */
1047         links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
1048         for (i = 0; i < dev->data->nb_queues; i++) {
1049                 if (links_map[i] != EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
1050                         queues[count] = i;
1051                         priorities[count] = (uint8_t)links_map[i];
1052                         ++count;
1053                 }
1054         }
1055         return count;
1056 }
1057
1058 int
1059 rte_event_dequeue_timeout_ticks(uint8_t dev_id, uint64_t ns,
1060                                  uint64_t *timeout_ticks)
1061 {
1062         struct rte_eventdev *dev;
1063
1064         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1065         dev = &rte_eventdevs[dev_id];
1066         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timeout_ticks, -ENOTSUP);
1067
1068         if (timeout_ticks == NULL)
1069                 return -EINVAL;
1070
1071         return (*dev->dev_ops->timeout_ticks)(dev, ns, timeout_ticks);
1072 }
1073
1074 int
1075 rte_event_dev_service_id_get(uint8_t dev_id, uint32_t *service_id)
1076 {
1077         struct rte_eventdev *dev;
1078
1079         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1080         dev = &rte_eventdevs[dev_id];
1081
1082         if (service_id == NULL)
1083                 return -EINVAL;
1084
1085         if (dev->data->service_inited)
1086                 *service_id = dev->data->service_id;
1087
1088         return dev->data->service_inited ? 0 : -ESRCH;
1089 }
1090
1091 int
1092 rte_event_dev_dump(uint8_t dev_id, FILE *f)
1093 {
1094         struct rte_eventdev *dev;
1095
1096         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1097         dev = &rte_eventdevs[dev_id];
1098         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dump, -ENOTSUP);
1099
1100         (*dev->dev_ops->dump)(dev, f);
1101         return 0;
1102
1103 }
1104
1105 static int
1106 xstats_get_count(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
1107                 uint8_t queue_port_id)
1108 {
1109         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1110         if (dev->dev_ops->xstats_get_names != NULL)
1111                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
1112                                                         queue_port_id,
1113                                                         NULL, NULL, 0);
1114         return 0;
1115 }
1116
1117 int
1118 rte_event_dev_xstats_names_get(uint8_t dev_id,
1119                 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
1120                 struct rte_event_dev_xstats_name *xstats_names,
1121                 unsigned int *ids, unsigned int size)
1122 {
1123         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
1124         const int cnt_expected_entries = xstats_get_count(dev_id, mode,
1125                                                           queue_port_id);
1126         if (xstats_names == NULL || cnt_expected_entries < 0 ||
1127                         (int)size < cnt_expected_entries)
1128                 return cnt_expected_entries;
1129
1130         /* dev_id checked above */
1131         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1132
1133         if (dev->dev_ops->xstats_get_names != NULL)
1134                 return (*dev->dev_ops->xstats_get_names)(dev, mode,
1135                                 queue_port_id, xstats_names, ids, size);
1136
1137         return -ENOTSUP;
1138 }
1139
1140 /* retrieve eventdev extended statistics */
1141 int
1142 rte_event_dev_xstats_get(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
1143                 uint8_t queue_port_id, const unsigned int ids[],
1144                 uint64_t values[], unsigned int n)
1145 {
1146         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
1147         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1148
1149         /* implemented by the driver */
1150         if (dev->dev_ops->xstats_get != NULL)
1151                 return (*dev->dev_ops->xstats_get)(dev, mode, queue_port_id,
1152                                 ids, values, n);
1153         return -ENOTSUP;
1154 }
1155
1156 uint64_t
1157 rte_event_dev_xstats_by_name_get(uint8_t dev_id, const char *name,
1158                 unsigned int *id)
1159 {
1160         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, 0);
1161         const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1162         unsigned int temp = -1;
1163
1164         if (id != NULL)
1165                 *id = (unsigned int)-1;
1166         else
1167                 id = &temp; /* ensure driver never gets a NULL value */
1168
1169         /* implemented by driver */
1170         if (dev->dev_ops->xstats_get_by_name != NULL)
1171                 return (*dev->dev_ops->xstats_get_by_name)(dev, name, id);
1172         return -ENOTSUP;
1173 }
1174
1175 int rte_event_dev_xstats_reset(uint8_t dev_id,
1176                 enum rte_event_dev_xstats_mode mode, int16_t queue_port_id,
1177                 const uint32_t ids[], uint32_t nb_ids)
1178 {
1179         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1180         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1181
1182         if (dev->dev_ops->xstats_reset != NULL)
1183                 return (*dev->dev_ops->xstats_reset)(dev, mode, queue_port_id,
1184                                                         ids, nb_ids);
1185         return -ENOTSUP;
1186 }
1187
1188 int rte_event_dev_selftest(uint8_t dev_id)
1189 {
1190         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1191         struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1192
1193         if (dev->dev_ops->dev_selftest != NULL)
1194                 return (*dev->dev_ops->dev_selftest)();
1195         return -ENOTSUP;
1196 }
1197
1198 int
1199 rte_event_dev_start(uint8_t dev_id)
1200 {
1201         struct rte_eventdev *dev;
1202         int diag;
1203
1204         RTE_EDEV_LOG_DEBUG("Start dev_id=%" PRIu8, dev_id);
1205
1206         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1207         dev = &rte_eventdevs[dev_id];
1208         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
1209
1210         if (dev->data->dev_started != 0) {
1211                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already started",
1212                         dev_id);
1213                 return 0;
1214         }
1215
1216         diag = (*dev->dev_ops->dev_start)(dev);
1217         if (diag == 0)
1218                 dev->data->dev_started = 1;
1219         else
1220                 return diag;
1221
1222         return 0;
1223 }
1224
1225 int
1226 rte_event_dev_stop_flush_callback_register(uint8_t dev_id,
1227                 eventdev_stop_flush_t callback, void *userdata)
1228 {
1229         struct rte_eventdev *dev;
1230
1231         RTE_EDEV_LOG_DEBUG("Stop flush register dev_id=%" PRIu8, dev_id);
1232
1233         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1234         dev = &rte_eventdevs[dev_id];
1235
1236         dev->dev_ops->dev_stop_flush = callback;
1237         dev->data->dev_stop_flush_arg = userdata;
1238
1239         return 0;
1240 }
1241
1242 void
1243 rte_event_dev_stop(uint8_t dev_id)
1244 {
1245         struct rte_eventdev *dev;
1246
1247         RTE_EDEV_LOG_DEBUG("Stop dev_id=%" PRIu8, dev_id);
1248
1249         RTE_EVENTDEV_VALID_DEVID_OR_RET(dev_id);
1250         dev = &rte_eventdevs[dev_id];
1251         RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
1252
1253         if (dev->data->dev_started == 0) {
1254                 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already stopped",
1255                         dev_id);
1256                 return;
1257         }
1258
1259         dev->data->dev_started = 0;
1260         (*dev->dev_ops->dev_stop)(dev);
1261 }
1262
1263 int
1264 rte_event_dev_close(uint8_t dev_id)
1265 {
1266         struct rte_eventdev *dev;
1267
1268         RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1269         dev = &rte_eventdevs[dev_id];
1270         RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
1271
1272         /* Device must be stopped before it can be closed */
1273         if (dev->data->dev_started == 1) {
1274                 RTE_EDEV_LOG_ERR("Device %u must be stopped before closing",
1275                                 dev_id);
1276                 return -EBUSY;
1277         }
1278
1279         return (*dev->dev_ops->dev_close)(dev);
1280 }
1281
1282 static inline int
1283 rte_eventdev_data_alloc(uint8_t dev_id, struct rte_eventdev_data **data,
1284                 int socket_id)
1285 {
1286         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1287         const struct rte_memzone *mz;
1288         int n;
1289
1290         /* Generate memzone name */
1291         n = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u", dev_id);
1292         if (n >= (int)sizeof(mz_name))
1293                 return -EINVAL;
1294
1295         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1296                 mz = rte_memzone_reserve(mz_name,
1297                                 sizeof(struct rte_eventdev_data),
1298                                 socket_id, 0);
1299         } else
1300                 mz = rte_memzone_lookup(mz_name);
1301
1302         if (mz == NULL)
1303                 return -ENOMEM;
1304
1305         *data = mz->addr;
1306         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1307                 memset(*data, 0, sizeof(struct rte_eventdev_data));
1308
1309         return 0;
1310 }
1311
1312 static inline uint8_t
1313 rte_eventdev_find_free_device_index(void)
1314 {
1315         uint8_t dev_id;
1316
1317         for (dev_id = 0; dev_id < RTE_EVENT_MAX_DEVS; dev_id++) {
1318                 if (rte_eventdevs[dev_id].attached ==
1319                                 RTE_EVENTDEV_DETACHED)
1320                         return dev_id;
1321         }
1322         return RTE_EVENT_MAX_DEVS;
1323 }
1324
1325 static uint16_t
1326 rte_event_tx_adapter_enqueue(__rte_unused void *port,
1327                         __rte_unused struct rte_event ev[],
1328                         __rte_unused uint16_t nb_events)
1329 {
1330         rte_errno = ENOTSUP;
1331         return 0;
1332 }
1333
1334 struct rte_eventdev *
1335 rte_event_pmd_allocate(const char *name, int socket_id)
1336 {
1337         struct rte_eventdev *eventdev;
1338         uint8_t dev_id;
1339
1340         if (rte_event_pmd_get_named_dev(name) != NULL) {
1341                 RTE_EDEV_LOG_ERR("Event device with name %s already "
1342                                 "allocated!", name);
1343                 return NULL;
1344         }
1345
1346         dev_id = rte_eventdev_find_free_device_index();
1347         if (dev_id == RTE_EVENT_MAX_DEVS) {
1348                 RTE_EDEV_LOG_ERR("Reached maximum number of event devices");
1349                 return NULL;
1350         }
1351
1352         eventdev = &rte_eventdevs[dev_id];
1353
1354         eventdev->txa_enqueue = rte_event_tx_adapter_enqueue;
1355
1356         if (eventdev->data == NULL) {
1357                 struct rte_eventdev_data *eventdev_data = NULL;
1358
1359                 int retval = rte_eventdev_data_alloc(dev_id, &eventdev_data,
1360                                 socket_id);
1361
1362                 if (retval < 0 || eventdev_data == NULL)
1363                         return NULL;
1364
1365                 eventdev->data = eventdev_data;
1366
1367                 snprintf(eventdev->data->name, RTE_EVENTDEV_NAME_MAX_LEN,
1368                                 "%s", name);
1369
1370                 eventdev->data->dev_id = dev_id;
1371                 eventdev->data->socket_id = socket_id;
1372                 eventdev->data->dev_started = 0;
1373
1374                 eventdev->attached = RTE_EVENTDEV_ATTACHED;
1375
1376                 eventdev_globals.nb_devs++;
1377         }
1378
1379         return eventdev;
1380 }
1381
1382 int
1383 rte_event_pmd_release(struct rte_eventdev *eventdev)
1384 {
1385         int ret;
1386         char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1387         const struct rte_memzone *mz;
1388
1389         if (eventdev == NULL)
1390                 return -EINVAL;
1391
1392         eventdev->attached = RTE_EVENTDEV_DETACHED;
1393         eventdev_globals.nb_devs--;
1394
1395         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1396                 rte_free(eventdev->data->dev_private);
1397
1398                 /* Generate memzone name */
1399                 ret = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u",
1400                                 eventdev->data->dev_id);
1401                 if (ret >= (int)sizeof(mz_name))
1402                         return -EINVAL;
1403
1404                 mz = rte_memzone_lookup(mz_name);
1405                 if (mz == NULL)
1406                         return -ENOMEM;
1407
1408                 ret = rte_memzone_free(mz);
1409                 if (ret)
1410                         return ret;
1411         }
1412
1413         eventdev->data = NULL;
1414         return 0;
1415 }