lib/librte_bbdev/rte_bbdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Intel Corporation
   3  */
   4
   5 #include <stdint.h>
   6 #include <string.h>
   7 #include <stdbool.h>
   8
   9 #include <rte_compat.h>
  10 #include <rte_common.h>
  11 #include <rte_errno.h>
  12 #include <rte_log.h>
  13 #include <rte_debug.h>
  14 #include <rte_eal.h>
  15 #include <rte_malloc.h>
  16 #include <rte_mempool.h>
  17 #include <rte_memzone.h>
  18 #include <rte_lcore.h>
  19 #include <rte_dev.h>
  20 #include <rte_spinlock.h>
  21 #include <rte_tailq.h>
  22 #include <rte_interrupts.h>
  23
  24 #include "rte_bbdev_op.h"
  25 #include "rte_bbdev.h"
  26 #include "rte_bbdev_pmd.h"
  27
  28 #define DEV_NAME "BBDEV"
  29
  30
  31 /* BBDev library logging ID */
  32 RTE_LOG_REGISTER(bbdev_logtype, lib.bbdev, NOTICE);
  33
  34 /* Helper macro for logging */
  35 #define rte_bbdev_log(level, fmt, ...) \
  36         rte_log(RTE_LOG_ ## level, bbdev_logtype, fmt "\n", ##__VA_ARGS__)
  37
  38 #define rte_bbdev_log_debug(fmt, ...) \
  39         rte_bbdev_log(DEBUG, RTE_STR(__LINE__) ":%s() " fmt, __func__, \
  40                 ##__VA_ARGS__)
  41
  42 /* Helper macro to check dev_id is valid */
  43 #define VALID_DEV_OR_RET_ERR(dev, dev_id) do { \
  44         if (dev == NULL) { \
  45                 rte_bbdev_log(ERR, "device %u is invalid", dev_id); \
  46                 return -ENODEV; \
  47         } \
  48 } while (0)
  49
  50 /* Helper macro to check dev_ops is valid */
  51 #define VALID_DEV_OPS_OR_RET_ERR(dev, dev_id) do { \
  52         if (dev->dev_ops == NULL) { \
  53                 rte_bbdev_log(ERR, "NULL dev_ops structure in device %u", \
  54                                 dev_id); \
  55                 return -ENODEV; \
  56         } \
  57 } while (0)
  58
  59 /* Helper macro to check that driver implements required function pointer */
  60 #define VALID_FUNC_OR_RET_ERR(func, dev_id) do { \
  61         if (func == NULL) { \
  62                 rte_bbdev_log(ERR, "device %u does not support %s", \
  63                                 dev_id, #func); \
  64                 return -ENOTSUP; \
  65         } \
  66 } while (0)
  67
  68 /* Helper macro to check that queue is valid */
  69 #define VALID_QUEUE_OR_RET_ERR(queue_id, dev) do { \
  70         if (queue_id >= dev->data->num_queues) { \
  71                 rte_bbdev_log(ERR, "Invalid queue_id %u for device %u", \
  72                                 queue_id, dev->data->dev_id); \
  73                 return -ERANGE; \
  74         } \
  75 } while (0)
  76
  77 /* List of callback functions registered by an application */
  78 struct rte_bbdev_callback {
  79         TAILQ_ENTRY(rte_bbdev_callback) next;  /* Callbacks list */
  80         rte_bbdev_cb_fn cb_fn;  /* Callback address */
  81         void *cb_arg;  /* Parameter for callback */
  82         void *ret_param;  /* Return parameter */
  83         enum rte_bbdev_event_type event; /* Interrupt event type */
  84         uint32_t active; /* Callback is executing */
  85 };
  86
  87 /* spinlock for bbdev device callbacks */
  88 static rte_spinlock_t rte_bbdev_cb_lock = RTE_SPINLOCK_INITIALIZER;
  89
  90 /*
  91  * Global array of all devices. This is not static because it's used by the
  92  * inline enqueue and dequeue functions
  93  */
  94 struct rte_bbdev rte_bbdev_devices[RTE_BBDEV_MAX_DEVS];
  95
  96 /* Global array with rte_bbdev_data structures */
  97 static struct rte_bbdev_data *rte_bbdev_data;
  98
  99 /* Memzone name for global bbdev data pool */
 100 static const char *MZ_RTE_BBDEV_DATA = "rte_bbdev_data";
 101
 102 /* Number of currently valid devices */
 103 static uint16_t num_devs;
 104
 105 /* Return pointer to device structure, with validity check */
 106 static struct rte_bbdev *
 107 get_dev(uint16_t dev_id)
 108 {
 109         if (rte_bbdev_is_valid(dev_id))
 110                 return &rte_bbdev_devices[dev_id];
 111         return NULL;
 112 }
 113
 114 /* Allocate global data array */
 115 static int
 116 rte_bbdev_data_alloc(void)
 117 {
 118         const unsigned int flags = 0;
 119         const struct rte_memzone *mz;
 120
 121         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 122                 mz = rte_memzone_reserve(MZ_RTE_BBDEV_DATA,
 123                                 RTE_BBDEV_MAX_DEVS * sizeof(*rte_bbdev_data),
 124                                 rte_socket_id(), flags);
 125         } else
 126                 mz = rte_memzone_lookup(MZ_RTE_BBDEV_DATA);
 127         if (mz == NULL) {
 128                 rte_bbdev_log(CRIT,
 129                                 "Cannot allocate memzone for bbdev port data");
 130                 return -ENOMEM;
 131         }
 132
 133         rte_bbdev_data = mz->addr;
 134         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 135                 memset(rte_bbdev_data, 0,
 136                                 RTE_BBDEV_MAX_DEVS * sizeof(*rte_bbdev_data));
 137         return 0;
 138 }
 139
 140 /*
 141  * Find data alocated for the device or if not found return first unused bbdev
 142  * data. If all structures are in use and none is used by the device return
 143  * NULL.
 144  */
 145 static struct rte_bbdev_data *
 146 find_bbdev_data(const char *name)
 147 {
 148         uint16_t data_id;
 149
 150         for (data_id = 0; data_id < RTE_BBDEV_MAX_DEVS; ++data_id) {
 151                 if (strlen(rte_bbdev_data[data_id].name) == 0) {
 152                         memset(&rte_bbdev_data[data_id], 0,
 153                                         sizeof(struct rte_bbdev_data));
 154                         return &rte_bbdev_data[data_id];
 155                 } else if (strncmp(rte_bbdev_data[data_id].name, name,
 156                                 RTE_BBDEV_NAME_MAX_LEN) == 0)
 157                         return &rte_bbdev_data[data_id];
 158         }
 159
 160         return NULL;
 161 }
 162
 163 /* Find lowest device id with no attached device */
 164 static uint16_t
 165 find_free_dev_id(void)
 166 {
 167         uint16_t i;
 168         for (i = 0; i < RTE_BBDEV_MAX_DEVS; i++) {
 169                 if (rte_bbdev_devices[i].state == RTE_BBDEV_UNUSED)
 170                         return i;
 171         }
 172         return RTE_BBDEV_MAX_DEVS;
 173 }
 174
 175 struct rte_bbdev *
 176 rte_bbdev_allocate(const char *name)
 177 {
 178         int ret;
 179         struct rte_bbdev *bbdev;
 180         uint16_t dev_id;
 181
 182         if (name == NULL) {
 183                 rte_bbdev_log(ERR, "Invalid null device name");
 184                 return NULL;
 185         }
 186
 187         if (rte_bbdev_get_named_dev(name) != NULL) {
 188                 rte_bbdev_log(ERR, "Device \"%s\" is already allocated", name);
 189                 return NULL;
 190         }
 191
 192         dev_id = find_free_dev_id();
 193         if (dev_id == RTE_BBDEV_MAX_DEVS) {
 194                 rte_bbdev_log(ERR, "Reached maximum number of devices");
 195                 return NULL;
 196         }
 197
 198         bbdev = &rte_bbdev_devices[dev_id];
 199
 200         if (rte_bbdev_data == NULL) {
 201                 ret = rte_bbdev_data_alloc();
 202                 if (ret != 0)
 203                         return NULL;
 204         }
 205
 206         bbdev->data = find_bbdev_data(name);
 207         if (bbdev->data == NULL) {
 208                 rte_bbdev_log(ERR,
 209                                 "Max BBDevs already allocated in multi-process environment!");
 210                 return NULL;
 211         }
 212
 213         rte_atomic16_inc(&bbdev->data->process_cnt);
 214         bbdev->data->dev_id = dev_id;
 215         bbdev->state = RTE_BBDEV_INITIALIZED;
 216
 217         ret = snprintf(bbdev->data->name, RTE_BBDEV_NAME_MAX_LEN, "%s", name);
 218         if ((ret < 0) || (ret >= RTE_BBDEV_NAME_MAX_LEN)) {
 219                 rte_bbdev_log(ERR, "Copying device name \"%s\" failed", name);
 220                 return NULL;
 221         }
 222
 223         /* init user callbacks */
 224         TAILQ_INIT(&(bbdev->list_cbs));
 225
 226         num_devs++;
 227
 228         rte_bbdev_log_debug("Initialised device %s (id = %u). Num devices = %u",
 229                         name, dev_id, num_devs);
 230
 231         return bbdev;
 232 }
 233
 234 int
 235 rte_bbdev_release(struct rte_bbdev *bbdev)
 236 {
 237         uint16_t dev_id;
 238         struct rte_bbdev_callback *cb, *next;
 239
 240         if (bbdev == NULL) {
 241                 rte_bbdev_log(ERR, "NULL bbdev");
 242                 return -ENODEV;
 243         }
 244         dev_id = bbdev->data->dev_id;
 245
 246         /* free all callbacks from the device's list */
 247         for (cb = TAILQ_FIRST(&bbdev->list_cbs); cb != NULL; cb = next) {
 248
 249                 next = TAILQ_NEXT(cb, next);
 250                 TAILQ_REMOVE(&(bbdev->list_cbs), cb, next);
 251                 rte_free(cb);
 252         }
 253
 254         /* clear shared BBDev Data if no process is using the device anymore */
 255         if (rte_atomic16_dec_and_test(&bbdev->data->process_cnt))
 256                 memset(bbdev->data, 0, sizeof(*bbdev->data));
 257
 258         memset(bbdev, 0, sizeof(*bbdev));
 259         num_devs--;
 260         bbdev->state = RTE_BBDEV_UNUSED;
 261
 262         rte_bbdev_log_debug(
 263                         "Un-initialised device id = %u. Num devices = %u",
 264                         dev_id, num_devs);
 265         return 0;
 266 }
 267
 268 struct rte_bbdev *
 269 rte_bbdev_get_named_dev(const char *name)
 270 {
 271         unsigned int i;
 272
 273         if (name == NULL) {
 274                 rte_bbdev_log(ERR, "NULL driver name");
 275                 return NULL;
 276         }
 277
 278         for (i = 0; i < RTE_BBDEV_MAX_DEVS; i++) {
 279                 struct rte_bbdev *dev = get_dev(i);
 280                 if (dev && (strncmp(dev->data->name,
 281                                 name, RTE_BBDEV_NAME_MAX_LEN) == 0))
 282                         return dev;
 283         }
 284
 285         return NULL;
 286 }
 287
 288 uint16_t
 289 rte_bbdev_count(void)
 290 {
 291         return num_devs;
 292 }
 293
 294 bool
 295 rte_bbdev_is_valid(uint16_t dev_id)
 296 {
 297         if ((dev_id < RTE_BBDEV_MAX_DEVS) &&
 298                 rte_bbdev_devices[dev_id].state == RTE_BBDEV_INITIALIZED)
 299                 return true;
 300         return false;
 301 }
 302
 303 uint16_t
 304 rte_bbdev_find_next(uint16_t dev_id)
 305 {
 306         dev_id++;
 307         for (; dev_id < RTE_BBDEV_MAX_DEVS; dev_id++)
 308                 if (rte_bbdev_is_valid(dev_id))
 309                         break;
 310         return dev_id;
 311 }
 312
 313 int
 314 rte_bbdev_setup_queues(uint16_t dev_id, uint16_t num_queues, int socket_id)
 315 {
 316         unsigned int i;
 317         int ret;
 318         struct rte_bbdev_driver_info dev_info;
 319         struct rte_bbdev *dev = get_dev(dev_id);
 320         VALID_DEV_OR_RET_ERR(dev, dev_id);
 321
 322         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 323
 324         if (dev->data->started) {
 325                 rte_bbdev_log(ERR,
 326                                 "Device %u cannot be configured when started",
 327                                 dev_id);
 328                 return -EBUSY;
 329         }
 330
 331         /* Get device driver information to get max number of queues */
 332         VALID_FUNC_OR_RET_ERR(dev->dev_ops->info_get, dev_id);
 333         memset(&dev_info, 0, sizeof(dev_info));
 334         dev->dev_ops->info_get(dev, &dev_info);
 335
 336         if ((num_queues == 0) || (num_queues > dev_info.max_num_queues)) {
 337                 rte_bbdev_log(ERR,
 338                                 "Device %u supports 0 < N <= %u queues, not %u",
 339                                 dev_id, dev_info.max_num_queues, num_queues);
 340                 return -EINVAL;
 341         }
 342
 343         /* If re-configuration, get driver to free existing internal memory */
 344         if (dev->data->queues != NULL) {
 345                 VALID_FUNC_OR_RET_ERR(dev->dev_ops->queue_release, dev_id);
 346                 for (i = 0; i < dev->data->num_queues; i++) {
 347                         int ret = dev->dev_ops->queue_release(dev, i);
 348                         if (ret < 0) {
 349                                 rte_bbdev_log(ERR,
 350                                                 "Device %u queue %u release failed",
 351                                                 dev_id, i);
 352                                 return ret;
 353                         }
 354                 }
 355                 /* Call optional device close */
 356                 if (dev->dev_ops->close) {
 357                         ret = dev->dev_ops->close(dev);
 358                         if (ret < 0) {
 359                                 rte_bbdev_log(ERR,
 360                                                 "Device %u couldn't be closed",
 361                                                 dev_id);
 362                                 return ret;
 363                         }
 364                 }
 365                 rte_free(dev->data->queues);
 366         }
 367
 368         /* Allocate queue pointers */
 369         dev->data->queues = rte_calloc_socket(DEV_NAME, num_queues,
 370                         sizeof(dev->data->queues[0]), RTE_CACHE_LINE_SIZE,
 371                                 dev->data->socket_id);
 372         if (dev->data->queues == NULL) {
 373                 rte_bbdev_log(ERR,
 374                                 "calloc of %u queues for device %u on socket %i failed",
 375                                 num_queues, dev_id, dev->data->socket_id);
 376                 return -ENOMEM;
 377         }
 378
 379         dev->data->num_queues = num_queues;
 380
 381         /* Call optional device configuration */
 382         if (dev->dev_ops->setup_queues) {
 383                 ret = dev->dev_ops->setup_queues(dev, num_queues, socket_id);
 384                 if (ret < 0) {
 385                         rte_bbdev_log(ERR,
 386                                         "Device %u memory configuration failed",
 387                                         dev_id);
 388                         goto error;
 389                 }
 390         }
 391
 392         rte_bbdev_log_debug("Device %u set up with %u queues", dev_id,
 393                         num_queues);
 394         return 0;
 395
 396 error:
 397         dev->data->num_queues = 0;
 398         rte_free(dev->data->queues);
 399         dev->data->queues = NULL;
 400         return ret;
 401 }
 402
 403 int
 404 rte_bbdev_intr_enable(uint16_t dev_id)
 405 {
 406         int ret;
 407         struct rte_bbdev *dev = get_dev(dev_id);
 408         VALID_DEV_OR_RET_ERR(dev, dev_id);
 409
 410         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 411
 412         if (dev->data->started) {
 413                 rte_bbdev_log(ERR,
 414                                 "Device %u cannot be configured when started",
 415                                 dev_id);
 416                 return -EBUSY;
 417         }
 418
 419         if (dev->dev_ops->intr_enable) {
 420                 ret = dev->dev_ops->intr_enable(dev);
 421                 if (ret < 0) {
 422                         rte_bbdev_log(ERR,
 423                                         "Device %u interrupts configuration failed",
 424                                         dev_id);
 425                         return ret;
 426                 }
 427                 rte_bbdev_log_debug("Enabled interrupts for dev %u", dev_id);
 428                 return 0;
 429         }
 430
 431         rte_bbdev_log(ERR, "Device %u doesn't support interrupts", dev_id);
 432         return -ENOTSUP;
 433 }
 434
 435 int
 436 rte_bbdev_queue_configure(uint16_t dev_id, uint16_t queue_id,
 437                 const struct rte_bbdev_queue_conf *conf)
 438 {
 439         int ret = 0;
 440         struct rte_bbdev_driver_info dev_info;
 441         struct rte_bbdev *dev = get_dev(dev_id);
 442         const struct rte_bbdev_op_cap *p;
 443         struct rte_bbdev_queue_conf *stored_conf;
 444         const char *op_type_str;
 445         VALID_DEV_OR_RET_ERR(dev, dev_id);
 446
 447         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 448
 449         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
 450
 451         if (dev->data->queues[queue_id].started || dev->data->started) {
 452                 rte_bbdev_log(ERR,
 453                                 "Queue %u of device %u cannot be configured when started",
 454                                 queue_id, dev_id);
 455                 return -EBUSY;
 456         }
 457
 458         VALID_FUNC_OR_RET_ERR(dev->dev_ops->queue_release, dev_id);
 459         VALID_FUNC_OR_RET_ERR(dev->dev_ops->queue_setup, dev_id);
 460
 461         /* Get device driver information to verify config is valid */
 462         VALID_FUNC_OR_RET_ERR(dev->dev_ops->info_get, dev_id);
 463         memset(&dev_info, 0, sizeof(dev_info));
 464         dev->dev_ops->info_get(dev, &dev_info);
 465
 466         /* Check configuration is valid */
 467         if (conf != NULL) {
 468                 if ((conf->op_type == RTE_BBDEV_OP_NONE) &&
 469                                 (dev_info.capabilities[0].type ==
 470                                 RTE_BBDEV_OP_NONE)) {
 471                         ret = 1;
 472                 } else {
 473                         for (p = dev_info.capabilities;
 474                                         p->type != RTE_BBDEV_OP_NONE; p++) {
 475                                 if (conf->op_type == p->type) {
 476                                         ret = 1;
 477                                         break;
 478                                 }
 479                         }
 480                 }
 481                 if (ret == 0) {
 482                         rte_bbdev_log(ERR, "Invalid operation type");
 483                         return -EINVAL;
 484                 }
 485                 if (conf->queue_size > dev_info.queue_size_lim) {
 486                         rte_bbdev_log(ERR,
 487                                         "Size (%u) of queue %u of device %u must be: <= %u",
 488                                         conf->queue_size, queue_id, dev_id,
 489                                         dev_info.queue_size_lim);
 490                         return -EINVAL;
 491                 }
 492                 if (!rte_is_power_of_2(conf->queue_size)) {
 493                         rte_bbdev_log(ERR,
 494                                         "Size (%u) of queue %u of device %u must be a power of 2",
 495                                         conf->queue_size, queue_id, dev_id);
 496                         return -EINVAL;
 497                 }
 498                 if (conf->op_type == RTE_BBDEV_OP_TURBO_DEC &&
 499                         conf->priority > dev_info.max_ul_queue_priority) {
 500                         rte_bbdev_log(ERR,
 501                                         "Priority (%u) of queue %u of bbdev %u must be <= %u",
 502                                         conf->priority, queue_id, dev_id,
 503                                         dev_info.max_ul_queue_priority);
 504                         return -EINVAL;
 505                 }
 506                 if (conf->op_type == RTE_BBDEV_OP_TURBO_ENC &&
 507                         conf->priority > dev_info.max_dl_queue_priority) {
 508                         rte_bbdev_log(ERR,
 509                                         "Priority (%u) of queue %u of bbdev %u must be <= %u",
 510                                         conf->priority, queue_id, dev_id,
 511                                         dev_info.max_dl_queue_priority);
 512                         return -EINVAL;
 513                 }
 514         }
 515
 516         /* Release existing queue (in case of queue reconfiguration) */
 517         if (dev->data->queues[queue_id].queue_private != NULL) {
 518                 ret = dev->dev_ops->queue_release(dev, queue_id);
 519                 if (ret < 0) {
 520                         rte_bbdev_log(ERR, "Device %u queue %u release failed",
 521                                         dev_id, queue_id);
 522                         return ret;
 523                 }
 524         }
 525
 526         /* Get driver to setup the queue */
 527         ret = dev->dev_ops->queue_setup(dev, queue_id, (conf != NULL) ?
 528                         conf : &dev_info.default_queue_conf);
 529         if (ret < 0) {
 530                 rte_bbdev_log(ERR,
 531                                 "Device %u queue %u setup failed", dev_id,
 532                                 queue_id);
 533                 return ret;
 534         }
 535
 536         /* Store configuration */
 537         stored_conf = &dev->data->queues[queue_id].conf;
 538         memcpy(stored_conf,
 539                         (conf != NULL) ? conf : &dev_info.default_queue_conf,
 540                         sizeof(*stored_conf));
 541
 542         op_type_str = rte_bbdev_op_type_str(stored_conf->op_type);
 543         if (op_type_str == NULL)
 544                 return -EINVAL;
 545
 546         rte_bbdev_log_debug("Configured dev%uq%u (size=%u, type=%s, prio=%u)",
 547                         dev_id, queue_id, stored_conf->queue_size, op_type_str,
 548                         stored_conf->priority);
 549
 550         return 0;
 551 }
 552
 553 int
 554 rte_bbdev_start(uint16_t dev_id)
 555 {
 556         int i;
 557         struct rte_bbdev *dev = get_dev(dev_id);
 558         VALID_DEV_OR_RET_ERR(dev, dev_id);
 559
 560         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 561
 562         if (dev->data->started) {
 563                 rte_bbdev_log_debug("Device %u is already started", dev_id);
 564                 return 0;
 565         }
 566
 567         if (dev->dev_ops->start) {
 568                 int ret = dev->dev_ops->start(dev);
 569                 if (ret < 0) {
 570                         rte_bbdev_log(ERR, "Device %u start failed", dev_id);
 571                         return ret;
 572                 }
 573         }
 574
 575         /* Store new state */
 576         for (i = 0; i < dev->data->num_queues; i++)
 577                 if (!dev->data->queues[i].conf.deferred_start)
 578                         dev->data->queues[i].started = true;
 579         dev->data->started = true;
 580
 581         rte_bbdev_log_debug("Started device %u", dev_id);
 582         return 0;
 583 }
 584
 585 int
 586 rte_bbdev_stop(uint16_t dev_id)
 587 {
 588         struct rte_bbdev *dev = get_dev(dev_id);
 589         VALID_DEV_OR_RET_ERR(dev, dev_id);
 590
 591         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 592
 593         if (!dev->data->started) {
 594                 rte_bbdev_log_debug("Device %u is already stopped", dev_id);
 595                 return 0;
 596         }
 597
 598         if (dev->dev_ops->stop)
 599                 dev->dev_ops->stop(dev);
 600         dev->data->started = false;
 601
 602         rte_bbdev_log_debug("Stopped device %u", dev_id);
 603         return 0;
 604 }
 605
 606 int
 607 rte_bbdev_close(uint16_t dev_id)
 608 {
 609         int ret;
 610         uint16_t i;
 611         struct rte_bbdev *dev = get_dev(dev_id);
 612         VALID_DEV_OR_RET_ERR(dev, dev_id);
 613
 614         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 615
 616         if (dev->data->started) {
 617                 ret = rte_bbdev_stop(dev_id);
 618                 if (ret < 0) {
 619                         rte_bbdev_log(ERR, "Device %u stop failed", dev_id);
 620                         return ret;
 621                 }
 622         }
 623
 624         /* Free memory used by queues */
 625         for (i = 0; i < dev->data->num_queues; i++) {
 626                 ret = dev->dev_ops->queue_release(dev, i);
 627                 if (ret < 0) {
 628                         rte_bbdev_log(ERR, "Device %u queue %u release failed",
 629                                         dev_id, i);
 630                         return ret;
 631                 }
 632         }
 633         rte_free(dev->data->queues);
 634
 635         if (dev->dev_ops->close) {
 636                 ret = dev->dev_ops->close(dev);
 637                 if (ret < 0) {
 638                         rte_bbdev_log(ERR, "Device %u close failed", dev_id);
 639                         return ret;
 640                 }
 641         }
 642
 643         /* Clear configuration */
 644         dev->data->queues = NULL;
 645         dev->data->num_queues = 0;
 646
 647         rte_bbdev_log_debug("Closed device %u", dev_id);
 648         return 0;
 649 }
 650
 651 int
 652 rte_bbdev_queue_start(uint16_t dev_id, uint16_t queue_id)
 653 {
 654         struct rte_bbdev *dev = get_dev(dev_id);
 655         VALID_DEV_OR_RET_ERR(dev, dev_id);
 656
 657         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 658
 659         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
 660
 661         if (dev->data->queues[queue_id].started) {
 662                 rte_bbdev_log_debug("Queue %u of device %u already started",
 663                                 queue_id, dev_id);
 664                 return 0;
 665         }
 666
 667         if (dev->dev_ops->queue_start) {
 668                 int ret = dev->dev_ops->queue_start(dev, queue_id);
 669                 if (ret < 0) {
 670                         rte_bbdev_log(ERR, "Device %u queue %u start failed",
 671                                         dev_id, queue_id);
 672                         return ret;
 673                 }
 674         }
 675         dev->data->queues[queue_id].started = true;
 676
 677         rte_bbdev_log_debug("Started queue %u of device %u", queue_id, dev_id);
 678         return 0;
 679 }
 680
 681 int
 682 rte_bbdev_queue_stop(uint16_t dev_id, uint16_t queue_id)
 683 {
 684         struct rte_bbdev *dev = get_dev(dev_id);
 685         VALID_DEV_OR_RET_ERR(dev, dev_id);
 686
 687         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 688
 689         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
 690
 691         if (!dev->data->queues[queue_id].started) {
 692                 rte_bbdev_log_debug("Queue %u of device %u already stopped",
 693                                 queue_id, dev_id);
 694                 return 0;
 695         }
 696
 697         if (dev->dev_ops->queue_stop) {
 698                 int ret = dev->dev_ops->queue_stop(dev, queue_id);
 699                 if (ret < 0) {
 700                         rte_bbdev_log(ERR, "Device %u queue %u stop failed",
 701                                         dev_id, queue_id);
 702                         return ret;
 703                 }
 704         }
 705         dev->data->queues[queue_id].started = false;
 706
 707         rte_bbdev_log_debug("Stopped queue %u of device %u", queue_id, dev_id);
 708         return 0;
 709 }
 710
 711 /* Get device statistics */
 712 static void
 713 get_stats_from_queues(struct rte_bbdev *dev, struct rte_bbdev_stats *stats)
 714 {
 715         unsigned int q_id;
 716         for (q_id = 0; q_id < dev->data->num_queues; q_id++) {
 717                 struct rte_bbdev_stats *q_stats =
 718                                 &dev->data->queues[q_id].queue_stats;
 719
 720                 stats->enqueued_count += q_stats->enqueued_count;
 721                 stats->dequeued_count += q_stats->dequeued_count;
 722                 stats->enqueue_err_count += q_stats->enqueue_err_count;
 723                 stats->dequeue_err_count += q_stats->dequeue_err_count;
 724         }
 725         rte_bbdev_log_debug("Got stats on %u", dev->data->dev_id);
 726 }
 727
 728 static void
 729 reset_stats_in_queues(struct rte_bbdev *dev)
 730 {
 731         unsigned int q_id;
 732         for (q_id = 0; q_id < dev->data->num_queues; q_id++) {
 733                 struct rte_bbdev_stats *q_stats =
 734                                 &dev->data->queues[q_id].queue_stats;
 735
 736                 memset(q_stats, 0, sizeof(*q_stats));
 737         }
 738         rte_bbdev_log_debug("Reset stats on %u", dev->data->dev_id);
 739 }
 740
 741 int
 742 rte_bbdev_stats_get(uint16_t dev_id, struct rte_bbdev_stats *stats)
 743 {
 744         struct rte_bbdev *dev = get_dev(dev_id);
 745         VALID_DEV_OR_RET_ERR(dev, dev_id);
 746
 747         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 748
 749         if (stats == NULL) {
 750                 rte_bbdev_log(ERR, "NULL stats structure");
 751                 return -EINVAL;
 752         }
 753
 754         memset(stats, 0, sizeof(*stats));
 755         if (dev->dev_ops->stats_get != NULL)
 756                 dev->dev_ops->stats_get(dev, stats);
 757         else
 758                 get_stats_from_queues(dev, stats);
 759
 760         rte_bbdev_log_debug("Retrieved stats of device %u", dev_id);
 761         return 0;
 762 }
 763
 764 int
 765 rte_bbdev_stats_reset(uint16_t dev_id)
 766 {
 767         struct rte_bbdev *dev = get_dev(dev_id);
 768         VALID_DEV_OR_RET_ERR(dev, dev_id);
 769
 770         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
 771
 772         if (dev->dev_ops->stats_reset != NULL)
 773                 dev->dev_ops->stats_reset(dev);
 774         else
 775                 reset_stats_in_queues(dev);
 776
 777         rte_bbdev_log_debug("Reset stats of device %u", dev_id);
 778         return 0;
 779 }
 780
 781 int
 782 rte_bbdev_info_get(uint16_t dev_id, struct rte_bbdev_info *dev_info)
 783 {
 784         struct rte_bbdev *dev = get_dev(dev_id);
 785         VALID_DEV_OR_RET_ERR(dev, dev_id);
 786
 787         VALID_FUNC_OR_RET_ERR(dev->dev_ops->info_get, dev_id);
 788
 789         if (dev_info == NULL) {
 790                 rte_bbdev_log(ERR, "NULL dev info structure");
 791                 return -EINVAL;
 792         }
 793
 794         /* Copy data maintained by device interface layer */
 795         memset(dev_info, 0, sizeof(*dev_info));
 796         dev_info->dev_name = dev->data->name;
 797         dev_info->num_queues = dev->data->num_queues;
 798         dev_info->device = dev->device;
 799         dev_info->socket_id = dev->data->socket_id;
 800         dev_info->started = dev->data->started;
 801
 802         /* Copy data maintained by device driver layer */
 803         dev->dev_ops->info_get(dev, &dev_info->drv);
 804
 805         rte_bbdev_log_debug("Retrieved info of device %u", dev_id);
 806         return 0;
 807 }
 808
 809 int
 810 rte_bbdev_queue_info_get(uint16_t dev_id, uint16_t queue_id,
 811                 struct rte_bbdev_queue_info *queue_info)
 812 {
 813         struct rte_bbdev *dev = get_dev(dev_id);
 814         VALID_DEV_OR_RET_ERR(dev, dev_id);
 815
 816         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
 817
 818         if (queue_info == NULL) {
 819                 rte_bbdev_log(ERR, "NULL queue info structure");
 820                 return -EINVAL;
 821         }
 822
 823         /* Copy data to output */
 824         memset(queue_info, 0, sizeof(*queue_info));
 825         queue_info->conf = dev->data->queues[queue_id].conf;
 826         queue_info->started = dev->data->queues[queue_id].started;
 827
 828         rte_bbdev_log_debug("Retrieved info of queue %u of device %u",
 829                         queue_id, dev_id);
 830         return 0;
 831 }
 832
 833 /* Calculate size needed to store bbdev_op, depending on type */
 834 static unsigned int
 835 get_bbdev_op_size(enum rte_bbdev_op_type type)
 836 {
 837         unsigned int result = 0;
 838         switch (type) {
 839         case RTE_BBDEV_OP_NONE:
 840                 result = RTE_MAX(sizeof(struct rte_bbdev_dec_op),
 841                                 sizeof(struct rte_bbdev_enc_op));
 842                 break;
 843         case RTE_BBDEV_OP_TURBO_DEC:
 844                 result = sizeof(struct rte_bbdev_dec_op);
 845                 break;
 846         case RTE_BBDEV_OP_TURBO_ENC:
 847                 result = sizeof(struct rte_bbdev_enc_op);
 848                 break;
 849         case RTE_BBDEV_OP_LDPC_DEC:
 850                 result = sizeof(struct rte_bbdev_dec_op);
 851                 break;
 852         case RTE_BBDEV_OP_LDPC_ENC:
 853                 result = sizeof(struct rte_bbdev_enc_op);
 854                 break;
 855         default:
 856                 break;
 857         }
 858
 859         return result;
 860 }
 861
 862 /* Initialise a bbdev_op structure */
 863 static void
 864 bbdev_op_init(struct rte_mempool *mempool, void *arg, void *element,
 865                 __rte_unused unsigned int n)
 866 {
 867         enum rte_bbdev_op_type type = *(enum rte_bbdev_op_type *)arg;
 868
 869         if (type == RTE_BBDEV_OP_TURBO_DEC || type == RTE_BBDEV_OP_LDPC_DEC) {
 870                 struct rte_bbdev_dec_op *op = element;
 871                 memset(op, 0, mempool->elt_size);
 872                 op->mempool = mempool;
 873         } else if (type == RTE_BBDEV_OP_TURBO_ENC ||
 874                         type == RTE_BBDEV_OP_LDPC_ENC) {
 875                 struct rte_bbdev_enc_op *op = element;
 876                 memset(op, 0, mempool->elt_size);
 877                 op->mempool = mempool;
 878         }
 879 }
 880
 881 struct rte_mempool *
 882 rte_bbdev_op_pool_create(const char *name, enum rte_bbdev_op_type type,
 883                 unsigned int num_elements, unsigned int cache_size,
 884                 int socket_id)
 885 {
 886         struct rte_bbdev_op_pool_private *priv;
 887         struct rte_mempool *mp;
 888         const char *op_type_str;
 889
 890         if (name == NULL) {
 891                 rte_bbdev_log(ERR, "NULL name for op pool");
 892                 return NULL;
 893         }
 894
 895         if (type >= RTE_BBDEV_OP_TYPE_COUNT) {
 896                 rte_bbdev_log(ERR,
 897                                 "Invalid op type (%u), should be less than %u",
 898                                 type, RTE_BBDEV_OP_TYPE_COUNT);
 899                 return NULL;
 900         }
 901
 902         mp = rte_mempool_create(name, num_elements, get_bbdev_op_size(type),
 903                         cache_size, sizeof(struct rte_bbdev_op_pool_private),
 904                         NULL, NULL, bbdev_op_init, &type, socket_id, 0);
 905         if (mp == NULL) {
 906                 rte_bbdev_log(ERR,
 907                                 "Failed to create op pool %s (num ops=%u, op size=%u) with error: %s",
 908                                 name, num_elements, get_bbdev_op_size(type),
 909                                 rte_strerror(rte_errno));
 910                 return NULL;
 911         }
 912
 913         op_type_str = rte_bbdev_op_type_str(type);
 914         if (op_type_str == NULL)
 915                 return NULL;
 916
 917         rte_bbdev_log_debug(
 918                         "Op pool %s created for %u ops (type=%s, cache=%u, socket=%u, size=%u)",
 919                         name, num_elements, op_type_str, cache_size, socket_id,
 920                         get_bbdev_op_size(type));
 921
 922         priv = (struct rte_bbdev_op_pool_private *)rte_mempool_get_priv(mp);
 923         priv->type = type;
 924
 925         return mp;
 926 }
 927
 928 int
 929 rte_bbdev_callback_register(uint16_t dev_id, enum rte_bbdev_event_type event,
 930                 rte_bbdev_cb_fn cb_fn, void *cb_arg)
 931 {
 932         struct rte_bbdev_callback *user_cb;
 933         struct rte_bbdev *dev = get_dev(dev_id);
 934         VALID_DEV_OR_RET_ERR(dev, dev_id);
 935
 936         if (event >= RTE_BBDEV_EVENT_MAX) {
 937                 rte_bbdev_log(ERR,
 938                                 "Invalid event type (%u), should be less than %u",
 939                                 event, RTE_BBDEV_EVENT_MAX);
 940                 return -EINVAL;
 941         }
 942
 943         if (cb_fn == NULL) {
 944                 rte_bbdev_log(ERR, "NULL callback function");
 945                 return -EINVAL;
 946         }
 947
 948         rte_spinlock_lock(&rte_bbdev_cb_lock);
 949
 950         TAILQ_FOREACH(user_cb, &(dev->list_cbs), next) {
 951                 if (user_cb->cb_fn == cb_fn &&
 952                                 user_cb->cb_arg == cb_arg &&
 953                                 user_cb->event == event)
 954                         break;
 955         }
 956
 957         /* create a new callback. */
 958         if (user_cb == NULL) {
 959                 user_cb = rte_zmalloc("INTR_USER_CALLBACK",
 960                                 sizeof(struct rte_bbdev_callback), 0);
 961                 if (user_cb != NULL) {
 962                         user_cb->cb_fn = cb_fn;
 963                         user_cb->cb_arg = cb_arg;
 964                         user_cb->event = event;
 965                         TAILQ_INSERT_TAIL(&(dev->list_cbs), user_cb, next);
 966                 }
 967         }
 968
 969         rte_spinlock_unlock(&rte_bbdev_cb_lock);
 970         return (user_cb == NULL) ? -ENOMEM : 0;
 971 }
 972
 973 int
 974 rte_bbdev_callback_unregister(uint16_t dev_id, enum rte_bbdev_event_type event,
 975                 rte_bbdev_cb_fn cb_fn, void *cb_arg)
 976 {
 977         int ret = 0;
 978         struct rte_bbdev_callback *cb, *next;
 979         struct rte_bbdev *dev = get_dev(dev_id);
 980         VALID_DEV_OR_RET_ERR(dev, dev_id);
 981
 982         if (event >= RTE_BBDEV_EVENT_MAX) {
 983                 rte_bbdev_log(ERR,
 984                                 "Invalid event type (%u), should be less than %u",
 985                                 event, RTE_BBDEV_EVENT_MAX);
 986                 return -EINVAL;
 987         }
 988
 989         if (cb_fn == NULL) {
 990                 rte_bbdev_log(ERR,
 991                                 "NULL callback function cannot be unregistered");
 992                 return -EINVAL;
 993         }
 994
 995         dev = &rte_bbdev_devices[dev_id];
 996         rte_spinlock_lock(&rte_bbdev_cb_lock);
 997
 998         for (cb = TAILQ_FIRST(&dev->list_cbs); cb != NULL; cb = next) {
 999
1000                 next = TAILQ_NEXT(cb, next);
1001
1002                 if (cb->cb_fn != cb_fn || cb->event != event ||
1003                                 (cb_arg != (void *)-1 && cb->cb_arg != cb_arg))
1004                         continue;
1005
1006                 /* If this callback is not executing right now, remove it. */
1007                 if (cb->active == 0) {
1008                         TAILQ_REMOVE(&(dev->list_cbs), cb, next);
1009                         rte_free(cb);
1010                 } else
1011                         ret = -EAGAIN;
1012         }
1013
1014         rte_spinlock_unlock(&rte_bbdev_cb_lock);
1015         return ret;
1016 }
1017
1018 void
1019 rte_bbdev_pmd_callback_process(struct rte_bbdev *dev,
1020         enum rte_bbdev_event_type event, void *ret_param)
1021 {
1022         struct rte_bbdev_callback *cb_lst;
1023         struct rte_bbdev_callback dev_cb;
1024
1025         if (dev == NULL) {
1026                 rte_bbdev_log(ERR, "NULL device");
1027                 return;
1028         }
1029
1030         if (dev->data == NULL) {
1031                 rte_bbdev_log(ERR, "NULL data structure");
1032                 return;
1033         }
1034
1035         if (event >= RTE_BBDEV_EVENT_MAX) {
1036                 rte_bbdev_log(ERR,
1037                                 "Invalid event type (%u), should be less than %u",
1038                                 event, RTE_BBDEV_EVENT_MAX);
1039                 return;
1040         }
1041
1042         rte_spinlock_lock(&rte_bbdev_cb_lock);
1043         TAILQ_FOREACH(cb_lst, &(dev->list_cbs), next) {
1044                 if (cb_lst->cb_fn == NULL || cb_lst->event != event)
1045                         continue;
1046                 dev_cb = *cb_lst;
1047                 cb_lst->active = 1;
1048                 if (ret_param != NULL)
1049                         dev_cb.ret_param = ret_param;
1050
1051                 rte_spinlock_unlock(&rte_bbdev_cb_lock);
1052                 dev_cb.cb_fn(dev->data->dev_id, dev_cb.event,
1053                                 dev_cb.cb_arg, dev_cb.ret_param);
1054                 rte_spinlock_lock(&rte_bbdev_cb_lock);
1055                 cb_lst->active = 0;
1056         }
1057         rte_spinlock_unlock(&rte_bbdev_cb_lock);
1058 }
1059
1060 int
1061 rte_bbdev_queue_intr_enable(uint16_t dev_id, uint16_t queue_id)
1062 {
1063         struct rte_bbdev *dev = get_dev(dev_id);
1064         VALID_DEV_OR_RET_ERR(dev, dev_id);
1065         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
1066         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
1067         VALID_FUNC_OR_RET_ERR(dev->dev_ops->queue_intr_enable, dev_id);
1068         return dev->dev_ops->queue_intr_enable(dev, queue_id);
1069 }
1070
1071 int
1072 rte_bbdev_queue_intr_disable(uint16_t dev_id, uint16_t queue_id)
1073 {
1074         struct rte_bbdev *dev = get_dev(dev_id);
1075         VALID_DEV_OR_RET_ERR(dev, dev_id);
1076         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
1077         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
1078         VALID_FUNC_OR_RET_ERR(dev->dev_ops->queue_intr_disable, dev_id);
1079         return dev->dev_ops->queue_intr_disable(dev, queue_id);
1080 }
1081
1082 int
1083 rte_bbdev_queue_intr_ctl(uint16_t dev_id, uint16_t queue_id, int epfd, int op,
1084                 void *data)
1085 {
1086         uint32_t vec;
1087         struct rte_bbdev *dev = get_dev(dev_id);
1088         struct rte_intr_handle *intr_handle;
1089         int ret;
1090
1091         VALID_DEV_OR_RET_ERR(dev, dev_id);
1092         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
1093
1094         intr_handle = dev->intr_handle;
1095         if (!intr_handle || !intr_handle->intr_vec) {
1096                 rte_bbdev_log(ERR, "Device %u intr handle unset\n", dev_id);
1097                 return -ENOTSUP;
1098         }
1099
1100         if (queue_id >= RTE_MAX_RXTX_INTR_VEC_ID) {
1101                 rte_bbdev_log(ERR, "Device %u queue_id %u is too big\n",
1102                                 dev_id, queue_id);
1103                 return -ENOTSUP;
1104         }
1105
1106         vec = intr_handle->intr_vec[queue_id];
1107         ret = rte_intr_rx_ctl(intr_handle, epfd, op, vec, data);
1108         if (ret && (ret != -EEXIST)) {
1109                 rte_bbdev_log(ERR,
1110                                 "dev %u q %u int ctl error op %d epfd %d vec %u\n",
1111                                 dev_id, queue_id, op, epfd, vec);
1112                 return ret;
1113         }
1114
1115         return 0;
1116 }
1117
1118
1119 const char *
1120 rte_bbdev_op_type_str(enum rte_bbdev_op_type op_type)
1121 {
1122         static const char * const op_types[] = {
1123                 "RTE_BBDEV_OP_NONE",
1124                 "RTE_BBDEV_OP_TURBO_DEC",
1125                 "RTE_BBDEV_OP_TURBO_ENC",
1126                 "RTE_BBDEV_OP_LDPC_DEC",
1127                 "RTE_BBDEV_OP_LDPC_ENC",
1128         };
1129
1130         if (op_type < RTE_BBDEV_OP_TYPE_COUNT)
1131                 return op_types[op_type];
1132
1133         rte_bbdev_log(ERR, "Invalid operation type");
1134         return NULL;
1135 }