ceph/src/spdk/dpdk/lib/librte_bbdev/rte_bbdev.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Intel Corporation
   3  */
   4
   5 #ifndef _RTE_BBDEV_H_
   6 #define _RTE_BBDEV_H_
   7
   8 /**
   9  * @file rte_bbdev.h
  10  *
  11  * Wireless base band device abstraction APIs.
  12  *
  13  * @warning
  14  * @b EXPERIMENTAL: this API may change without prior notice
  15  *
  16  * This API allows an application to discover, configure and use a device to
  17  * process operations. An asynchronous API (enqueue, followed by later dequeue)
  18  * is used for processing operations.
  19  *
  20  * The functions in this API are not thread-safe when called on the same
  21  * target object (a device, or a queue on a device), with the exception that
  22  * one thread can enqueue operations to a queue while another thread dequeues
  23  * from the same queue.
  24  */
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 #include <stdint.h>
  31 #include <stdbool.h>
  32 #include <string.h>
  33
  34 #include <rte_compat.h>
  35 #include <rte_atomic.h>
  36 #include <rte_bus.h>
  37 #include <rte_cpuflags.h>
  38 #include <rte_memory.h>
  39
  40 #include "rte_bbdev_op.h"
  41
  42 #ifndef RTE_BBDEV_MAX_DEVS
  43 #define RTE_BBDEV_MAX_DEVS 128  /**< Max number of devices */
  44 #endif
  45
  46 /** Flags indicate current state of BBDEV device */
  47 enum rte_bbdev_state {
  48         RTE_BBDEV_UNUSED,
  49         RTE_BBDEV_INITIALIZED
  50 };
  51
  52 /**
  53  * Get the total number of devices that have been successfully initialised.
  54  *
  55  * @return
  56  *   The total number of usable devices.
  57  */
  58 uint16_t __rte_experimental
  59 rte_bbdev_count(void);
  60
  61 /**
  62  * Check if a device is valid.
  63  *
  64  * @param dev_id
  65  *   The identifier of the device.
  66  *
  67  * @return
  68  *   true if device ID is valid and device is attached, false otherwise.
  69  */
  70 bool __rte_experimental
  71 rte_bbdev_is_valid(uint16_t dev_id);
  72
  73 /**
  74  * Get the next enabled device.
  75  *
  76  * @param dev_id
  77  *   The current device
  78  *
  79  * @return
  80  *   - The next device, or
  81  *   - RTE_BBDEV_MAX_DEVS if none found
  82  */
  83 uint16_t __rte_experimental
  84 rte_bbdev_find_next(uint16_t dev_id);
  85
  86 /** Iterate through all enabled devices */
  87 #define RTE_BBDEV_FOREACH(i) for (i = rte_bbdev_find_next(-1); \
  88                 i < RTE_BBDEV_MAX_DEVS; \
  89                 i = rte_bbdev_find_next(i))
  90
  91 /**
  92  * Setup up device queues.
  93  * This function must be called on a device before setting up the queues and
  94  * starting the device. It can also be called when a device is in the stopped
  95  * state. If any device queues have been configured their configuration will be
  96  * cleared by a call to this function.
  97  *
  98  * @param dev_id
  99  *   The identifier of the device.
 100  * @param num_queues
 101  *   Number of queues to configure on device.
 102  * @param socket_id
 103  *   ID of a socket which will be used to allocate memory.
 104  *
 105  * @return
 106  *   - 0 on success
 107  *   - -ENODEV if dev_id is invalid or the device is corrupted
 108  *   - -EINVAL if num_queues is invalid, 0 or greater than maximum
 109  *   - -EBUSY if the identified device has already started
 110  *   - -ENOMEM if unable to allocate memory
 111  */
 112 int __rte_experimental
 113 rte_bbdev_setup_queues(uint16_t dev_id, uint16_t num_queues, int socket_id);
 114
 115 /**
 116  * Enable interrupts.
 117  * This function may be called before starting the device to enable the
 118  * interrupts if they are available.
 119  *
 120  * @param dev_id
 121  *   The identifier of the device.
 122  *
 123  * @return
 124  *   - 0 on success
 125  *   - -ENODEV if dev_id is invalid or the device is corrupted
 126  *   - -EBUSY if the identified device has already started
 127  *   - -ENOTSUP if the interrupts are not supported by the device
 128  */
 129 int __rte_experimental
 130 rte_bbdev_intr_enable(uint16_t dev_id);
 131
 132 /** Device queue configuration structure */
 133 struct rte_bbdev_queue_conf {
 134         int socket;  /**< NUMA socket used for memory allocation */
 135         uint32_t queue_size;  /**< Size of queue */
 136         uint8_t priority;  /**< Queue priority */
 137         bool deferred_start; /**< Do not start queue when device is started. */
 138         enum rte_bbdev_op_type op_type; /**< Operation type */
 139 };
 140
 141 /**
 142  * Configure a queue on a device.
 143  * This function can be called after device configuration, and before starting.
 144  * It can also be called when the device or the queue is in the stopped state.
 145  *
 146  * @param dev_id
 147  *   The identifier of the device.
 148  * @param queue_id
 149  *   The index of the queue.
 150  * @param conf
 151  *   The queue configuration. If NULL, a default configuration will be used.
 152  *
 153  * @return
 154  *   - 0 on success
 155  *   - EINVAL if the identified queue size or priority are invalid
 156  *   - EBUSY if the identified queue or its device have already started
 157  */
 158 int __rte_experimental
 159 rte_bbdev_queue_configure(uint16_t dev_id, uint16_t queue_id,
 160                 const struct rte_bbdev_queue_conf *conf);
 161
 162 /**
 163  * Start a device.
 164  * This is the last step needed before enqueuing operations is possible.
 165  *
 166  * @param dev_id
 167  *   The identifier of the device.
 168  *
 169  * @return
 170  *   - 0 on success
 171  *   - negative value on failure - as returned from PMD driver
 172  */
 173 int __rte_experimental
 174 rte_bbdev_start(uint16_t dev_id);
 175
 176 /**
 177  * Stop a device.
 178  * The device can be reconfigured, and restarted after being stopped.
 179  *
 180  * @param dev_id
 181  *   The identifier of the device.
 182  *
 183  * @return
 184  *   - 0 on success
 185  */
 186 int __rte_experimental
 187 rte_bbdev_stop(uint16_t dev_id);
 188
 189 /**
 190  * Close a device.
 191  * The device cannot be restarted without reconfiguration!
 192  *
 193  * @param dev_id
 194  *   The identifier of the device.
 195  *
 196  * @return
 197  *   - 0 on success
 198  */
 199 int __rte_experimental
 200 rte_bbdev_close(uint16_t dev_id);
 201
 202 /**
 203  * Start a specified queue on a device.
 204  * This is only needed if the queue has been stopped, or if the deferred_start
 205  * flag has been set when configuring the queue.
 206  *
 207  * @param dev_id
 208  *   The identifier of the device.
 209  * @param queue_id
 210  *   The index of the queue.
 211  *
 212  * @return
 213  *   - 0 on success
 214  *   - negative value on failure - as returned from PMD driver
 215  */
 216 int __rte_experimental
 217 rte_bbdev_queue_start(uint16_t dev_id, uint16_t queue_id);
 218
 219 /**
 220  * Stop a specified queue on a device, to allow re configuration.
 221  *
 222  * @param dev_id
 223  *   The identifier of the device.
 224  * @param queue_id
 225  *   The index of the queue.
 226  *
 227  * @return
 228  *   - 0 on success
 229  *   - negative value on failure - as returned from PMD driver
 230  */
 231 int __rte_experimental
 232 rte_bbdev_queue_stop(uint16_t dev_id, uint16_t queue_id);
 233
 234 /** Device statistics. */
 235 struct rte_bbdev_stats {
 236         uint64_t enqueued_count;  /**< Count of all operations enqueued */
 237         uint64_t dequeued_count;  /**< Count of all operations dequeued */
 238         /** Total error count on operations enqueued */
 239         uint64_t enqueue_err_count;
 240         /** Total error count on operations dequeued */
 241         uint64_t dequeue_err_count;
 242         /** CPU cycles consumed by the (HW/SW) accelerator device to offload
 243          *  the enqueue request to its internal queues.
 244          *  - For a HW device this is the cycles consumed in MMIO write
 245          *  - For a SW (vdev) device, this is the processing time of the
 246          *     bbdev operation
 247          */
 248         uint64_t acc_offload_cycles;
 249 };
 250
 251 /**
 252  * Retrieve the general I/O statistics of a device.
 253  *
 254  * @param dev_id
 255  *   The identifier of the device.
 256  * @param stats
 257  *   Pointer to structure to where statistics will be copied. On error, this
 258  *   location may or may not have been modified.
 259  *
 260  * @return
 261  *   - 0 on success
 262  *   - EINVAL if invalid parameter pointer is provided
 263  */
 264 int __rte_experimental
 265 rte_bbdev_stats_get(uint16_t dev_id, struct rte_bbdev_stats *stats);
 266
 267 /**
 268  * Reset the statistics of a device.
 269  *
 270  * @param dev_id
 271  *   The identifier of the device.
 272  * @return
 273  *   - 0 on success
 274  */
 275 int __rte_experimental
 276 rte_bbdev_stats_reset(uint16_t dev_id);
 277
 278 /** Device information supplied by the device's driver */
 279 struct rte_bbdev_driver_info {
 280         /** Driver name */
 281         const char *driver_name;
 282
 283         /** Maximum number of queues supported by the device */
 284         unsigned int max_num_queues;
 285         /** Queue size limit (queue size must also be power of 2) */
 286         uint32_t queue_size_lim;
 287         /** Set if device off-loads operation to hardware  */
 288         bool hardware_accelerated;
 289         /** Max value supported by queue priority for DL */
 290         uint8_t max_dl_queue_priority;
 291         /** Max value supported by queue priority for UL */
 292         uint8_t max_ul_queue_priority;
 293         /** Set if device supports per-queue interrupts */
 294         bool queue_intr_supported;
 295         /** Minimum alignment of buffers, in bytes */
 296         uint16_t min_alignment;
 297         /** Default queue configuration used if none is supplied  */
 298         struct rte_bbdev_queue_conf default_queue_conf;
 299         /** Device operation capabilities */
 300         const struct rte_bbdev_op_cap *capabilities;
 301         /** Device cpu_flag requirements */
 302         const enum rte_cpu_flag_t *cpu_flag_reqs;
 303 };
 304
 305 /** Macro used at end of bbdev PMD list */
 306 #define RTE_BBDEV_END_OF_CAPABILITIES_LIST() \
 307         { RTE_BBDEV_OP_NONE }
 308
 309 /**
 310  * Device information structure used by an application to discover a devices
 311  * capabilities and current configuration
 312  */
 313 struct rte_bbdev_info {
 314         int socket_id;  /**< NUMA socket that device is on */
 315         const char *dev_name;  /**< Unique device name */
 316         const struct rte_bus *bus;  /**< Bus information */
 317         uint16_t num_queues;  /**< Number of queues currently configured */
 318         bool started;  /**< Set if device is currently started */
 319         struct rte_bbdev_driver_info drv;  /**< Info from device driver */
 320 };
 321
 322 /**
 323  * Retrieve information about a device.
 324  *
 325  * @param dev_id
 326  *   The identifier of the device.
 327  * @param dev_info
 328  *   Pointer to structure to where information will be copied. On error, this
 329  *   location may or may not have been modified.
 330  *
 331  * @return
 332  *   - 0 on success
 333  *   - EINVAL if invalid parameter pointer is provided
 334  */
 335 int __rte_experimental
 336 rte_bbdev_info_get(uint16_t dev_id, struct rte_bbdev_info *dev_info);
 337
 338 /** Queue information */
 339 struct rte_bbdev_queue_info {
 340         /** Current device configuration */
 341         struct rte_bbdev_queue_conf conf;
 342         /** Set if queue is currently started */
 343         bool started;
 344 };
 345
 346 /**
 347  * Retrieve information about a specific queue on a device.
 348  *
 349  * @param dev_id
 350  *   The identifier of the device.
 351  * @param queue_id
 352  *   The index of the queue.
 353  * @param queue_info
 354  *   Pointer to structure to where information will be copied. On error, this
 355  *   location may or may not have been modified.
 356  *
 357  * @return
 358  *   - 0 on success
 359  *   - EINVAL if invalid parameter pointer is provided
 360  */
 361 int __rte_experimental
 362 rte_bbdev_queue_info_get(uint16_t dev_id, uint16_t queue_id,
 363                 struct rte_bbdev_queue_info *queue_info);
 364
 365 /** @internal The data structure associated with each queue of a device. */
 366 struct rte_bbdev_queue_data {
 367         void *queue_private;  /**< Driver-specific per-queue data */
 368         struct rte_bbdev_queue_conf conf;  /**< Current configuration */
 369         struct rte_bbdev_stats queue_stats;  /**< Queue statistics */
 370         bool started;  /**< Queue state */
 371 };
 372
 373 /** @internal Enqueue encode operations for processing on queue of a device. */
 374 typedef uint16_t (*rte_bbdev_enqueue_enc_ops_t)(
 375                 struct rte_bbdev_queue_data *q_data,
 376                 struct rte_bbdev_enc_op **ops,
 377                 uint16_t num);
 378
 379 /** @internal Enqueue decode operations for processing on queue of a device. */
 380 typedef uint16_t (*rte_bbdev_enqueue_dec_ops_t)(
 381                 struct rte_bbdev_queue_data *q_data,
 382                 struct rte_bbdev_dec_op **ops,
 383                 uint16_t num);
 384
 385 /** @internal Dequeue encode operations from a queue of a device. */
 386 typedef uint16_t (*rte_bbdev_dequeue_enc_ops_t)(
 387                 struct rte_bbdev_queue_data *q_data,
 388                 struct rte_bbdev_enc_op **ops, uint16_t num);
 389
 390 /** @internal Dequeue decode operations from a queue of a device. */
 391 typedef uint16_t (*rte_bbdev_dequeue_dec_ops_t)(
 392                 struct rte_bbdev_queue_data *q_data,
 393                 struct rte_bbdev_dec_op **ops, uint16_t num);
 394
 395 #define RTE_BBDEV_NAME_MAX_LEN  64  /**< Max length of device name */
 396
 397 /**
 398  * @internal The data associated with a device, with no function pointers.
 399  * This structure is safe to place in shared memory to be common among
 400  * different processes in a multi-process configuration. Drivers can access
 401  * these fields, but should never write to them!
 402  */
 403 struct rte_bbdev_data {
 404         char name[RTE_BBDEV_NAME_MAX_LEN]; /**< Unique identifier name */
 405         void *dev_private;  /**< Driver-specific private data */
 406         uint16_t num_queues;  /**< Number of currently configured queues */
 407         struct rte_bbdev_queue_data *queues;  /**< Queue structures */
 408         uint16_t dev_id;  /**< Device ID */
 409         int socket_id;  /**< NUMA socket that device is on */
 410         bool started;  /**< Device run-time state */
 411         /** Counter of processes using the device */
 412         rte_atomic16_t process_cnt;
 413 };
 414
 415 /* Forward declarations */
 416 struct rte_bbdev_ops;
 417 struct rte_bbdev_callback;
 418 struct rte_intr_handle;
 419
 420 /** Structure to keep track of registered callbacks */
 421 TAILQ_HEAD(rte_bbdev_cb_list, rte_bbdev_callback);
 422
 423 /**
 424  * @internal The data structure associated with a device. Drivers can access
 425  * these fields, but should only write to the *_ops fields.
 426  */
 427 struct __rte_cache_aligned rte_bbdev {
 428         /**< Enqueue encode function */
 429         rte_bbdev_enqueue_enc_ops_t enqueue_enc_ops;
 430         /**< Enqueue decode function */
 431         rte_bbdev_enqueue_dec_ops_t enqueue_dec_ops;
 432         /**< Dequeue encode function */
 433         rte_bbdev_dequeue_enc_ops_t dequeue_enc_ops;
 434         /**< Dequeue decode function */
 435         rte_bbdev_dequeue_dec_ops_t dequeue_dec_ops;
 436         const struct rte_bbdev_ops *dev_ops;  /**< Functions exported by PMD */
 437         struct rte_bbdev_data *data;  /**< Pointer to device data */
 438         enum rte_bbdev_state state;  /**< If device is currently used or not */
 439         struct rte_device *device; /**< Backing device */
 440         /** User application callback for interrupts if present */
 441         struct rte_bbdev_cb_list list_cbs;
 442         struct rte_intr_handle *intr_handle; /**< Device interrupt handle */
 443 };
 444
 445 /** @internal array of all devices */
 446 extern struct rte_bbdev rte_bbdev_devices[];
 447
 448 /**
 449  * Enqueue a burst of processed encode operations to a queue of the device.
 450  * This functions only enqueues as many operations as currently possible and
 451  * does not block until @p num_ops entries in the queue are available.
 452  * This function does not provide any error notification to avoid the
 453  * corresponding overhead.
 454  *
 455  * @param dev_id
 456  *   The identifier of the device.
 457  * @param queue_id
 458  *   The index of the queue.
 459  * @param ops
 460  *   Pointer array containing operations to be enqueued Must have at least
 461  *   @p num_ops entries
 462  * @param num_ops
 463  *   The maximum number of operations to enqueue.
 464  *
 465  * @return
 466  *   The number of operations actually enqueued (this is the number of processed
 467  *   entries in the @p ops array).
 468  */
 469 static inline uint16_t __rte_experimental
 470 rte_bbdev_enqueue_enc_ops(uint16_t dev_id, uint16_t queue_id,
 471                 struct rte_bbdev_enc_op **ops, uint16_t num_ops)
 472 {
 473         struct rte_bbdev *dev = &rte_bbdev_devices[dev_id];
 474         struct rte_bbdev_queue_data *q_data = &dev->data->queues[queue_id];
 475         return dev->enqueue_enc_ops(q_data, ops, num_ops);
 476 }
 477
 478 /**
 479  * Enqueue a burst of processed decode operations to a queue of the device.
 480  * This functions only enqueues as many operations as currently possible and
 481  * does not block until @p num_ops entries in the queue are available.
 482  * This function does not provide any error notification to avoid the
 483  * corresponding overhead.
 484  *
 485  * @param dev_id
 486  *   The identifier of the device.
 487  * @param queue_id
 488  *   The index of the queue.
 489  * @param ops
 490  *   Pointer array containing operations to be enqueued Must have at least
 491  *   @p num_ops entries
 492  * @param num_ops
 493  *   The maximum number of operations to enqueue.
 494  *
 495  * @return
 496  *   The number of operations actually enqueued (this is the number of processed
 497  *   entries in the @p ops array).
 498  */
 499 static inline uint16_t __rte_experimental
 500 rte_bbdev_enqueue_dec_ops(uint16_t dev_id, uint16_t queue_id,
 501                 struct rte_bbdev_dec_op **ops, uint16_t num_ops)
 502 {
 503         struct rte_bbdev *dev = &rte_bbdev_devices[dev_id];
 504         struct rte_bbdev_queue_data *q_data = &dev->data->queues[queue_id];
 505         return dev->enqueue_dec_ops(q_data, ops, num_ops);
 506 }
 507
 508 /**
 509  * Dequeue a burst of processed encode operations from a queue of the device.
 510  * This functions returns only the current contents of the queue, and does not
 511  * block until @ num_ops is available.
 512  * This function does not provide any error notification to avoid the
 513  * corresponding overhead.
 514  *
 515  * @param dev_id
 516  *   The identifier of the device.
 517  * @param queue_id
 518  *   The index of the queue.
 519  * @param ops
 520  *   Pointer array where operations will be dequeued to. Must have at least
 521  *   @p num_ops entries
 522  * @param num_ops
 523  *   The maximum number of operations to dequeue.
 524  *
 525  * @return
 526  *   The number of operations actually dequeued (this is the number of entries
 527  *   copied into the @p ops array).
 528  */
 529 static inline uint16_t __rte_experimental
 530 rte_bbdev_dequeue_enc_ops(uint16_t dev_id, uint16_t queue_id,
 531                 struct rte_bbdev_enc_op **ops, uint16_t num_ops)
 532 {
 533         struct rte_bbdev *dev = &rte_bbdev_devices[dev_id];
 534         struct rte_bbdev_queue_data *q_data = &dev->data->queues[queue_id];
 535         return dev->dequeue_enc_ops(q_data, ops, num_ops);
 536 }
 537
 538 /**
 539  * Dequeue a burst of processed decode operations from a queue of the device.
 540  * This functions returns only the current contents of the queue, and does not
 541  * block until @ num_ops is available.
 542  * This function does not provide any error notification to avoid the
 543  * corresponding overhead.
 544  *
 545  * @param dev_id
 546  *   The identifier of the device.
 547  * @param queue_id
 548  *   The index of the queue.
 549  * @param ops
 550  *   Pointer array where operations will be dequeued to. Must have at least
 551  *   @p num_ops entries
 552  * @param num_ops
 553  *   The maximum number of operations to dequeue.
 554  *
 555  * @return
 556  *   The number of operations actually dequeued (this is the number of entries
 557  *   copied into the @p ops array).
 558  */
 559
 560 static inline uint16_t __rte_experimental
 561 rte_bbdev_dequeue_dec_ops(uint16_t dev_id, uint16_t queue_id,
 562                 struct rte_bbdev_dec_op **ops, uint16_t num_ops)
 563 {
 564         struct rte_bbdev *dev = &rte_bbdev_devices[dev_id];
 565         struct rte_bbdev_queue_data *q_data = &dev->data->queues[queue_id];
 566         return dev->dequeue_dec_ops(q_data, ops, num_ops);
 567 }
 568
 569 /** Definitions of device event types */
 570 enum rte_bbdev_event_type {
 571         RTE_BBDEV_EVENT_UNKNOWN,  /**< unknown event type */
 572         RTE_BBDEV_EVENT_ERROR,  /**< error interrupt event */
 573         RTE_BBDEV_EVENT_DEQUEUE,  /**< dequeue event */
 574         RTE_BBDEV_EVENT_MAX  /**< max value of this enum */
 575 };
 576
 577 /**
 578  * Typedef for application callback function registered by application
 579  * software for notification of device events
 580  *
 581  * @param dev_id
 582  *   Device identifier
 583  * @param event
 584  *   Device event to register for notification of.
 585  * @param cb_arg
 586  *   User specified parameter to be passed to user's callback function.
 587  * @param ret_param
 588  *   To pass data back to user application.
 589  */
 590 typedef void (*rte_bbdev_cb_fn)(uint16_t dev_id,
 591                 enum rte_bbdev_event_type event, void *cb_arg,
 592                 void *ret_param);
 593
 594 /**
 595  * Register a callback function for specific device id. Multiple callbacks can
 596  * be added and will be called in the order they are added when an event is
 597  * triggered. Callbacks are called in a separate thread created by the DPDK EAL.
 598  *
 599  * @param dev_id
 600  *   Device id.
 601  * @param event
 602  *   The event that the callback will be registered for.
 603  * @param cb_fn
 604  *   User supplied callback function to be called.
 605  * @param cb_arg
 606  *   Pointer to parameter that will be passed to the callback.
 607  *
 608  * @return
 609  *   Zero on success, negative value on failure.
 610  */
 611 int __rte_experimental
 612 rte_bbdev_callback_register(uint16_t dev_id, enum rte_bbdev_event_type event,
 613                 rte_bbdev_cb_fn cb_fn, void *cb_arg);
 614
 615 /**
 616  * Unregister a callback function for specific device id.
 617  *
 618  * @param dev_id
 619  *   The device identifier.
 620  * @param event
 621  *   The event that the callback will be unregistered for.
 622  * @param cb_fn
 623  *   User supplied callback function to be unregistered.
 624  * @param cb_arg
 625  *   Pointer to the parameter supplied when registering the callback.
 626  *   (void *)-1 means to remove all registered callbacks with the specified
 627  *   function address.
 628  *
 629  * @return
 630  *   - 0 on success
 631  *   - EINVAL if invalid parameter pointer is provided
 632  *   - EAGAIN if the provided callback pointer does not exist
 633  */
 634 int __rte_experimental
 635 rte_bbdev_callback_unregister(uint16_t dev_id, enum rte_bbdev_event_type event,
 636                 rte_bbdev_cb_fn cb_fn, void *cb_arg);
 637
 638 /**
 639  * Enable a one-shot interrupt on the next operation enqueued to a particular
 640  * queue. The interrupt will be triggered when the operation is ready to be
 641  * dequeued. To handle the interrupt, an epoll file descriptor must be
 642  * registered using rte_bbdev_queue_intr_ctl(), and then an application
 643  * thread/lcore can wait for the interrupt using rte_epoll_wait().
 644  *
 645  * @param dev_id
 646  *   The device identifier.
 647  * @param queue_id
 648  *   The index of the queue.
 649  *
 650  * @return
 651  *   - 0 on success
 652  *   - negative value on failure - as returned from PMD driver
 653  */
 654 int __rte_experimental
 655 rte_bbdev_queue_intr_enable(uint16_t dev_id, uint16_t queue_id);
 656
 657 /**
 658  * Disable a one-shot interrupt on the next operation enqueued to a particular
 659  * queue (if it has been enabled).
 660  *
 661  * @param dev_id
 662  *   The device identifier.
 663  * @param queue_id
 664  *   The index of the queue.
 665  *
 666  * @return
 667  *   - 0 on success
 668  *   - negative value on failure - as returned from PMD driver
 669  */
 670 int __rte_experimental
 671 rte_bbdev_queue_intr_disable(uint16_t dev_id, uint16_t queue_id);
 672
 673 /**
 674  * Control interface for per-queue interrupts.
 675  *
 676  * @param dev_id
 677  *   The device identifier.
 678  * @param queue_id
 679  *   The index of the queue.
 680  * @param epfd
 681  *   Epoll file descriptor that will be associated with the interrupt source.
 682  *   If the special value RTE_EPOLL_PER_THREAD is provided, a per thread epoll
 683  *   file descriptor created by the EAL is used (RTE_EPOLL_PER_THREAD can also
 684  *   be used when calling rte_epoll_wait()).
 685  * @param op
 686  *   The operation be performed for the vector.RTE_INTR_EVENT_ADD or
 687  *   RTE_INTR_EVENT_DEL.
 688  * @param data
 689  *   User context, that will be returned in the epdata.data field of the
 690  *   rte_epoll_event structure filled in by rte_epoll_wait().
 691  *
 692  * @return
 693  *   - 0 on success
 694  *   - ENOTSUP if interrupts are not supported by the identified device
 695  *   - negative value on failure - as returned from PMD driver
 696  */
 697 int __rte_experimental
 698 rte_bbdev_queue_intr_ctl(uint16_t dev_id, uint16_t queue_id, int epfd, int op,
 699                 void *data);
 700
 701 #ifdef __cplusplus
 702 }
 703 #endif
 704
 705 #endif /* _RTE_BBDEV_H_ */