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[ceph.git] / ceph / src / seastar / dpdk / lib / librte_eventdev / rte_eventdev.c
1 /*
2 * BSD LICENSE
3 *
4 * Copyright(c) 2016 Cavium networks. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 * * Neither the name of Cavium networks nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <ctype.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <stdarg.h>
38 #include <errno.h>
39 #include <stdint.h>
40 #include <inttypes.h>
41 #include <sys/types.h>
42 #include <sys/queue.h>
43
44 #include <rte_byteorder.h>
45 #include <rte_log.h>
46 #include <rte_debug.h>
47 #include <rte_dev.h>
48 #include <rte_pci.h>
49 #include <rte_memory.h>
50 #include <rte_memcpy.h>
51 #include <rte_memzone.h>
52 #include <rte_eal.h>
53 #include <rte_per_lcore.h>
54 #include <rte_lcore.h>
55 #include <rte_atomic.h>
56 #include <rte_branch_prediction.h>
57 #include <rte_common.h>
58 #include <rte_malloc.h>
59 #include <rte_errno.h>
60
61 #include "rte_eventdev.h"
62 #include "rte_eventdev_pmd.h"
63
64 struct rte_eventdev rte_event_devices[RTE_EVENT_MAX_DEVS];
65
66 struct rte_eventdev *rte_eventdevs = &rte_event_devices[0];
67
68 static struct rte_eventdev_global eventdev_globals = {
69 .nb_devs = 0
70 };
71
72 struct rte_eventdev_global *rte_eventdev_globals = &eventdev_globals;
73
74 /* Event dev north bound API implementation */
75
76 uint8_t
77 rte_event_dev_count(void)
78 {
79 return rte_eventdev_globals->nb_devs;
80 }
81
82 int
83 rte_event_dev_get_dev_id(const char *name)
84 {
85 int i;
86
87 if (!name)
88 return -EINVAL;
89
90 for (i = 0; i < rte_eventdev_globals->nb_devs; i++)
91 if ((strcmp(rte_event_devices[i].data->name, name)
92 == 0) &&
93 (rte_event_devices[i].attached ==
94 RTE_EVENTDEV_ATTACHED))
95 return i;
96 return -ENODEV;
97 }
98
99 int
100 rte_event_dev_socket_id(uint8_t dev_id)
101 {
102 struct rte_eventdev *dev;
103
104 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
105 dev = &rte_eventdevs[dev_id];
106
107 return dev->data->socket_id;
108 }
109
110 int
111 rte_event_dev_info_get(uint8_t dev_id, struct rte_event_dev_info *dev_info)
112 {
113 struct rte_eventdev *dev;
114
115 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
116 dev = &rte_eventdevs[dev_id];
117
118 if (dev_info == NULL)
119 return -EINVAL;
120
121 memset(dev_info, 0, sizeof(struct rte_event_dev_info));
122
123 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
124 (*dev->dev_ops->dev_infos_get)(dev, dev_info);
125
126 dev_info->dequeue_timeout_ns = dev->data->dev_conf.dequeue_timeout_ns;
127
128 dev_info->dev = dev->dev;
129 if (dev->driver)
130 dev_info->driver_name = dev->driver->pci_drv.driver.name;
131 return 0;
132 }
133
134 static inline int
135 rte_event_dev_queue_config(struct rte_eventdev *dev, uint8_t nb_queues)
136 {
137 uint8_t old_nb_queues = dev->data->nb_queues;
138 uint8_t *queues_prio;
139 unsigned int i;
140
141 RTE_EDEV_LOG_DEBUG("Setup %d queues on device %u", nb_queues,
142 dev->data->dev_id);
143
144 /* First time configuration */
145 if (dev->data->queues_prio == NULL && nb_queues != 0) {
146 /* Allocate memory to store queue priority */
147 dev->data->queues_prio = rte_zmalloc_socket(
148 "eventdev->data->queues_prio",
149 sizeof(dev->data->queues_prio[0]) * nb_queues,
150 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
151 if (dev->data->queues_prio == NULL) {
152 dev->data->nb_queues = 0;
153 RTE_EDEV_LOG_ERR("failed to get mem for queue priority,"
154 "nb_queues %u", nb_queues);
155 return -(ENOMEM);
156 }
157 /* Re-configure */
158 } else if (dev->data->queues_prio != NULL && nb_queues != 0) {
159 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_release, -ENOTSUP);
160
161 for (i = nb_queues; i < old_nb_queues; i++)
162 (*dev->dev_ops->queue_release)(dev, i);
163
164 /* Re allocate memory to store queue priority */
165 queues_prio = dev->data->queues_prio;
166 queues_prio = rte_realloc(queues_prio,
167 sizeof(queues_prio[0]) * nb_queues,
168 RTE_CACHE_LINE_SIZE);
169 if (queues_prio == NULL) {
170 RTE_EDEV_LOG_ERR("failed to realloc queue priority,"
171 " nb_queues %u", nb_queues);
172 return -(ENOMEM);
173 }
174 dev->data->queues_prio = queues_prio;
175
176 if (nb_queues > old_nb_queues) {
177 uint8_t new_qs = nb_queues - old_nb_queues;
178
179 memset(queues_prio + old_nb_queues, 0,
180 sizeof(queues_prio[0]) * new_qs);
181 }
182 } else if (dev->data->queues_prio != NULL && nb_queues == 0) {
183 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_release, -ENOTSUP);
184
185 for (i = nb_queues; i < old_nb_queues; i++)
186 (*dev->dev_ops->queue_release)(dev, i);
187 }
188
189 dev->data->nb_queues = nb_queues;
190 return 0;
191 }
192
193 #define EVENT_QUEUE_SERVICE_PRIORITY_INVALID (0xdead)
194
195 static inline int
196 rte_event_dev_port_config(struct rte_eventdev *dev, uint8_t nb_ports)
197 {
198 uint8_t old_nb_ports = dev->data->nb_ports;
199 void **ports;
200 uint16_t *links_map;
201 uint8_t *ports_dequeue_depth;
202 uint8_t *ports_enqueue_depth;
203 unsigned int i;
204
205 RTE_EDEV_LOG_DEBUG("Setup %d ports on device %u", nb_ports,
206 dev->data->dev_id);
207
208 /* First time configuration */
209 if (dev->data->ports == NULL && nb_ports != 0) {
210 dev->data->ports = rte_zmalloc_socket("eventdev->data->ports",
211 sizeof(dev->data->ports[0]) * nb_ports,
212 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
213 if (dev->data->ports == NULL) {
214 dev->data->nb_ports = 0;
215 RTE_EDEV_LOG_ERR("failed to get mem for port meta data,"
216 "nb_ports %u", nb_ports);
217 return -(ENOMEM);
218 }
219
220 /* Allocate memory to store ports dequeue depth */
221 dev->data->ports_dequeue_depth =
222 rte_zmalloc_socket("eventdev->ports_dequeue_depth",
223 sizeof(dev->data->ports_dequeue_depth[0]) * nb_ports,
224 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
225 if (dev->data->ports_dequeue_depth == NULL) {
226 dev->data->nb_ports = 0;
227 RTE_EDEV_LOG_ERR("failed to get mem for port deq meta,"
228 "nb_ports %u", nb_ports);
229 return -(ENOMEM);
230 }
231
232 /* Allocate memory to store ports enqueue depth */
233 dev->data->ports_enqueue_depth =
234 rte_zmalloc_socket("eventdev->ports_enqueue_depth",
235 sizeof(dev->data->ports_enqueue_depth[0]) * nb_ports,
236 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
237 if (dev->data->ports_enqueue_depth == NULL) {
238 dev->data->nb_ports = 0;
239 RTE_EDEV_LOG_ERR("failed to get mem for port enq meta,"
240 "nb_ports %u", nb_ports);
241 return -(ENOMEM);
242 }
243
244 /* Allocate memory to store queue to port link connection */
245 dev->data->links_map =
246 rte_zmalloc_socket("eventdev->links_map",
247 sizeof(dev->data->links_map[0]) * nb_ports *
248 RTE_EVENT_MAX_QUEUES_PER_DEV,
249 RTE_CACHE_LINE_SIZE, dev->data->socket_id);
250 if (dev->data->links_map == NULL) {
251 dev->data->nb_ports = 0;
252 RTE_EDEV_LOG_ERR("failed to get mem for port_map area,"
253 "nb_ports %u", nb_ports);
254 return -(ENOMEM);
255 }
256 for (i = 0; i < nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV; i++)
257 dev->data->links_map[i] =
258 EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
259 } else if (dev->data->ports != NULL && nb_ports != 0) {/* re-config */
260 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_release, -ENOTSUP);
261
262 ports = dev->data->ports;
263 ports_dequeue_depth = dev->data->ports_dequeue_depth;
264 ports_enqueue_depth = dev->data->ports_enqueue_depth;
265 links_map = dev->data->links_map;
266
267 for (i = nb_ports; i < old_nb_ports; i++)
268 (*dev->dev_ops->port_release)(ports[i]);
269
270 /* Realloc memory for ports */
271 ports = rte_realloc(ports, sizeof(ports[0]) * nb_ports,
272 RTE_CACHE_LINE_SIZE);
273 if (ports == NULL) {
274 RTE_EDEV_LOG_ERR("failed to realloc port meta data,"
275 " nb_ports %u", nb_ports);
276 return -(ENOMEM);
277 }
278
279 /* Realloc memory for ports_dequeue_depth */
280 ports_dequeue_depth = rte_realloc(ports_dequeue_depth,
281 sizeof(ports_dequeue_depth[0]) * nb_ports,
282 RTE_CACHE_LINE_SIZE);
283 if (ports_dequeue_depth == NULL) {
284 RTE_EDEV_LOG_ERR("failed to realloc port dequeue meta,"
285 " nb_ports %u", nb_ports);
286 return -(ENOMEM);
287 }
288
289 /* Realloc memory for ports_enqueue_depth */
290 ports_enqueue_depth = rte_realloc(ports_enqueue_depth,
291 sizeof(ports_enqueue_depth[0]) * nb_ports,
292 RTE_CACHE_LINE_SIZE);
293 if (ports_enqueue_depth == NULL) {
294 RTE_EDEV_LOG_ERR("failed to realloc port enqueue meta,"
295 " nb_ports %u", nb_ports);
296 return -(ENOMEM);
297 }
298
299 /* Realloc memory to store queue to port link connection */
300 links_map = rte_realloc(links_map,
301 sizeof(dev->data->links_map[0]) * nb_ports *
302 RTE_EVENT_MAX_QUEUES_PER_DEV,
303 RTE_CACHE_LINE_SIZE);
304 if (dev->data->links_map == NULL) {
305 dev->data->nb_ports = 0;
306 RTE_EDEV_LOG_ERR("failed to realloc mem for port_map,"
307 "nb_ports %u", nb_ports);
308 return -(ENOMEM);
309 }
310
311 if (nb_ports > old_nb_ports) {
312 uint8_t new_ps = nb_ports - old_nb_ports;
313 unsigned int old_links_map_end =
314 old_nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV;
315 unsigned int links_map_end =
316 nb_ports * RTE_EVENT_MAX_QUEUES_PER_DEV;
317
318 memset(ports + old_nb_ports, 0,
319 sizeof(ports[0]) * new_ps);
320 memset(ports_dequeue_depth + old_nb_ports, 0,
321 sizeof(ports_dequeue_depth[0]) * new_ps);
322 memset(ports_enqueue_depth + old_nb_ports, 0,
323 sizeof(ports_enqueue_depth[0]) * new_ps);
324 for (i = old_links_map_end; i < links_map_end; i++)
325 links_map[i] =
326 EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
327 }
328
329 dev->data->ports = ports;
330 dev->data->ports_dequeue_depth = ports_dequeue_depth;
331 dev->data->ports_enqueue_depth = ports_enqueue_depth;
332 dev->data->links_map = links_map;
333 } else if (dev->data->ports != NULL && nb_ports == 0) {
334 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_release, -ENOTSUP);
335
336 ports = dev->data->ports;
337 for (i = nb_ports; i < old_nb_ports; i++)
338 (*dev->dev_ops->port_release)(ports[i]);
339 }
340
341 dev->data->nb_ports = nb_ports;
342 return 0;
343 }
344
345 int
346 rte_event_dev_configure(uint8_t dev_id,
347 const struct rte_event_dev_config *dev_conf)
348 {
349 struct rte_eventdev *dev;
350 struct rte_event_dev_info info;
351 int diag;
352
353 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
354 dev = &rte_eventdevs[dev_id];
355
356 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
357 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_configure, -ENOTSUP);
358
359 if (dev->data->dev_started) {
360 RTE_EDEV_LOG_ERR(
361 "device %d must be stopped to allow configuration", dev_id);
362 return -EBUSY;
363 }
364
365 if (dev_conf == NULL)
366 return -EINVAL;
367
368 (*dev->dev_ops->dev_infos_get)(dev, &info);
369
370 /* Check dequeue_timeout_ns value is in limit */
371 if (!(dev_conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT)) {
372 if (dev_conf->dequeue_timeout_ns < info.min_dequeue_timeout_ns
373 || dev_conf->dequeue_timeout_ns >
374 info.max_dequeue_timeout_ns) {
375 RTE_EDEV_LOG_ERR("dev%d invalid dequeue_timeout_ns=%d"
376 " min_dequeue_timeout_ns=%d max_dequeue_timeout_ns=%d",
377 dev_id, dev_conf->dequeue_timeout_ns,
378 info.min_dequeue_timeout_ns,
379 info.max_dequeue_timeout_ns);
380 return -EINVAL;
381 }
382 }
383
384 /* Check nb_events_limit is in limit */
385 if (dev_conf->nb_events_limit > info.max_num_events) {
386 RTE_EDEV_LOG_ERR("dev%d nb_events_limit=%d > max_num_events=%d",
387 dev_id, dev_conf->nb_events_limit, info.max_num_events);
388 return -EINVAL;
389 }
390
391 /* Check nb_event_queues is in limit */
392 if (!dev_conf->nb_event_queues) {
393 RTE_EDEV_LOG_ERR("dev%d nb_event_queues cannot be zero",
394 dev_id);
395 return -EINVAL;
396 }
397 if (dev_conf->nb_event_queues > info.max_event_queues) {
398 RTE_EDEV_LOG_ERR("%d nb_event_queues=%d > max_event_queues=%d",
399 dev_id, dev_conf->nb_event_queues, info.max_event_queues);
400 return -EINVAL;
401 }
402
403 /* Check nb_event_ports is in limit */
404 if (!dev_conf->nb_event_ports) {
405 RTE_EDEV_LOG_ERR("dev%d nb_event_ports cannot be zero", dev_id);
406 return -EINVAL;
407 }
408 if (dev_conf->nb_event_ports > info.max_event_ports) {
409 RTE_EDEV_LOG_ERR("id%d nb_event_ports=%d > max_event_ports= %d",
410 dev_id, dev_conf->nb_event_ports, info.max_event_ports);
411 return -EINVAL;
412 }
413
414 /* Check nb_event_queue_flows is in limit */
415 if (!dev_conf->nb_event_queue_flows) {
416 RTE_EDEV_LOG_ERR("dev%d nb_flows cannot be zero", dev_id);
417 return -EINVAL;
418 }
419 if (dev_conf->nb_event_queue_flows > info.max_event_queue_flows) {
420 RTE_EDEV_LOG_ERR("dev%d nb_flows=%x > max_flows=%x",
421 dev_id, dev_conf->nb_event_queue_flows,
422 info.max_event_queue_flows);
423 return -EINVAL;
424 }
425
426 /* Check nb_event_port_dequeue_depth is in limit */
427 if (!dev_conf->nb_event_port_dequeue_depth) {
428 RTE_EDEV_LOG_ERR("dev%d nb_dequeue_depth cannot be zero",
429 dev_id);
430 return -EINVAL;
431 }
432 if (dev_conf->nb_event_port_dequeue_depth >
433 info.max_event_port_dequeue_depth) {
434 RTE_EDEV_LOG_ERR("dev%d nb_dq_depth=%d > max_dq_depth=%d",
435 dev_id, dev_conf->nb_event_port_dequeue_depth,
436 info.max_event_port_dequeue_depth);
437 return -EINVAL;
438 }
439
440 /* Check nb_event_port_enqueue_depth is in limit */
441 if (!dev_conf->nb_event_port_enqueue_depth) {
442 RTE_EDEV_LOG_ERR("dev%d nb_enqueue_depth cannot be zero",
443 dev_id);
444 return -EINVAL;
445 }
446 if (dev_conf->nb_event_port_enqueue_depth >
447 info.max_event_port_enqueue_depth) {
448 RTE_EDEV_LOG_ERR("dev%d nb_enq_depth=%d > max_enq_depth=%d",
449 dev_id, dev_conf->nb_event_port_enqueue_depth,
450 info.max_event_port_enqueue_depth);
451 return -EINVAL;
452 }
453
454 /* Copy the dev_conf parameter into the dev structure */
455 memcpy(&dev->data->dev_conf, dev_conf, sizeof(dev->data->dev_conf));
456
457 /* Setup new number of queues and reconfigure device. */
458 diag = rte_event_dev_queue_config(dev, dev_conf->nb_event_queues);
459 if (diag != 0) {
460 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_queue_config = %d",
461 dev_id, diag);
462 return diag;
463 }
464
465 /* Setup new number of ports and reconfigure device. */
466 diag = rte_event_dev_port_config(dev, dev_conf->nb_event_ports);
467 if (diag != 0) {
468 rte_event_dev_queue_config(dev, 0);
469 RTE_EDEV_LOG_ERR("dev%d rte_event_dev_port_config = %d",
470 dev_id, diag);
471 return diag;
472 }
473
474 /* Configure the device */
475 diag = (*dev->dev_ops->dev_configure)(dev);
476 if (diag != 0) {
477 RTE_EDEV_LOG_ERR("dev%d dev_configure = %d", dev_id, diag);
478 rte_event_dev_queue_config(dev, 0);
479 rte_event_dev_port_config(dev, 0);
480 }
481
482 dev->data->event_dev_cap = info.event_dev_cap;
483 return diag;
484 }
485
486 static inline int
487 is_valid_queue(struct rte_eventdev *dev, uint8_t queue_id)
488 {
489 if (queue_id < dev->data->nb_queues && queue_id <
490 RTE_EVENT_MAX_QUEUES_PER_DEV)
491 return 1;
492 else
493 return 0;
494 }
495
496 int
497 rte_event_queue_default_conf_get(uint8_t dev_id, uint8_t queue_id,
498 struct rte_event_queue_conf *queue_conf)
499 {
500 struct rte_eventdev *dev;
501
502 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
503 dev = &rte_eventdevs[dev_id];
504
505 if (queue_conf == NULL)
506 return -EINVAL;
507
508 if (!is_valid_queue(dev, queue_id)) {
509 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
510 return -EINVAL;
511 }
512
513 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf, -ENOTSUP);
514 memset(queue_conf, 0, sizeof(struct rte_event_queue_conf));
515 (*dev->dev_ops->queue_def_conf)(dev, queue_id, queue_conf);
516 return 0;
517 }
518
519 static inline int
520 is_valid_atomic_queue_conf(const struct rte_event_queue_conf *queue_conf)
521 {
522 if (queue_conf && (
523 ((queue_conf->event_queue_cfg &
524 RTE_EVENT_QUEUE_CFG_TYPE_MASK)
525 == RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
526 ((queue_conf->event_queue_cfg &
527 RTE_EVENT_QUEUE_CFG_TYPE_MASK)
528 == RTE_EVENT_QUEUE_CFG_ATOMIC_ONLY)
529 ))
530 return 1;
531 else
532 return 0;
533 }
534
535 static inline int
536 is_valid_ordered_queue_conf(const struct rte_event_queue_conf *queue_conf)
537 {
538 if (queue_conf && (
539 ((queue_conf->event_queue_cfg &
540 RTE_EVENT_QUEUE_CFG_TYPE_MASK)
541 == RTE_EVENT_QUEUE_CFG_ALL_TYPES) ||
542 ((queue_conf->event_queue_cfg &
543 RTE_EVENT_QUEUE_CFG_TYPE_MASK)
544 == RTE_EVENT_QUEUE_CFG_ORDERED_ONLY)
545 ))
546 return 1;
547 else
548 return 0;
549 }
550
551
552 int
553 rte_event_queue_setup(uint8_t dev_id, uint8_t queue_id,
554 const struct rte_event_queue_conf *queue_conf)
555 {
556 struct rte_eventdev *dev;
557 struct rte_event_queue_conf def_conf;
558
559 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
560 dev = &rte_eventdevs[dev_id];
561
562 if (!is_valid_queue(dev, queue_id)) {
563 RTE_EDEV_LOG_ERR("Invalid queue_id=%" PRIu8, queue_id);
564 return -EINVAL;
565 }
566
567 /* Check nb_atomic_flows limit */
568 if (is_valid_atomic_queue_conf(queue_conf)) {
569 if (queue_conf->nb_atomic_flows == 0 ||
570 queue_conf->nb_atomic_flows >
571 dev->data->dev_conf.nb_event_queue_flows) {
572 RTE_EDEV_LOG_ERR(
573 "dev%d queue%d Invalid nb_atomic_flows=%d max_flows=%d",
574 dev_id, queue_id, queue_conf->nb_atomic_flows,
575 dev->data->dev_conf.nb_event_queue_flows);
576 return -EINVAL;
577 }
578 }
579
580 /* Check nb_atomic_order_sequences limit */
581 if (is_valid_ordered_queue_conf(queue_conf)) {
582 if (queue_conf->nb_atomic_order_sequences == 0 ||
583 queue_conf->nb_atomic_order_sequences >
584 dev->data->dev_conf.nb_event_queue_flows) {
585 RTE_EDEV_LOG_ERR(
586 "dev%d queue%d Invalid nb_atomic_order_seq=%d max_flows=%d",
587 dev_id, queue_id, queue_conf->nb_atomic_order_sequences,
588 dev->data->dev_conf.nb_event_queue_flows);
589 return -EINVAL;
590 }
591 }
592
593 if (dev->data->dev_started) {
594 RTE_EDEV_LOG_ERR(
595 "device %d must be stopped to allow queue setup", dev_id);
596 return -EBUSY;
597 }
598
599 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_setup, -ENOTSUP);
600
601 if (queue_conf == NULL) {
602 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_def_conf,
603 -ENOTSUP);
604 (*dev->dev_ops->queue_def_conf)(dev, queue_id, &def_conf);
605 queue_conf = &def_conf;
606 }
607
608 dev->data->queues_prio[queue_id] = queue_conf->priority;
609 return (*dev->dev_ops->queue_setup)(dev, queue_id, queue_conf);
610 }
611
612 uint8_t
613 rte_event_queue_count(uint8_t dev_id)
614 {
615 struct rte_eventdev *dev;
616
617 dev = &rte_eventdevs[dev_id];
618 return dev->data->nb_queues;
619 }
620
621 uint8_t
622 rte_event_queue_priority(uint8_t dev_id, uint8_t queue_id)
623 {
624 struct rte_eventdev *dev;
625
626 dev = &rte_eventdevs[dev_id];
627 if (dev->data->event_dev_cap & RTE_EVENT_DEV_CAP_QUEUE_QOS)
628 return dev->data->queues_prio[queue_id];
629 else
630 return RTE_EVENT_DEV_PRIORITY_NORMAL;
631 }
632
633 static inline int
634 is_valid_port(struct rte_eventdev *dev, uint8_t port_id)
635 {
636 if (port_id < dev->data->nb_ports)
637 return 1;
638 else
639 return 0;
640 }
641
642 int
643 rte_event_port_default_conf_get(uint8_t dev_id, uint8_t port_id,
644 struct rte_event_port_conf *port_conf)
645 {
646 struct rte_eventdev *dev;
647
648 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
649 dev = &rte_eventdevs[dev_id];
650
651 if (port_conf == NULL)
652 return -EINVAL;
653
654 if (!is_valid_port(dev, port_id)) {
655 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
656 return -EINVAL;
657 }
658
659 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf, -ENOTSUP);
660 memset(port_conf, 0, sizeof(struct rte_event_port_conf));
661 (*dev->dev_ops->port_def_conf)(dev, port_id, port_conf);
662 return 0;
663 }
664
665 int
666 rte_event_port_setup(uint8_t dev_id, uint8_t port_id,
667 const struct rte_event_port_conf *port_conf)
668 {
669 struct rte_eventdev *dev;
670 struct rte_event_port_conf def_conf;
671 int diag;
672
673 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
674 dev = &rte_eventdevs[dev_id];
675
676 if (!is_valid_port(dev, port_id)) {
677 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
678 return -EINVAL;
679 }
680
681 /* Check new_event_threshold limit */
682 if ((port_conf && !port_conf->new_event_threshold) ||
683 (port_conf && port_conf->new_event_threshold >
684 dev->data->dev_conf.nb_events_limit)) {
685 RTE_EDEV_LOG_ERR(
686 "dev%d port%d Invalid event_threshold=%d nb_events_limit=%d",
687 dev_id, port_id, port_conf->new_event_threshold,
688 dev->data->dev_conf.nb_events_limit);
689 return -EINVAL;
690 }
691
692 /* Check dequeue_depth limit */
693 if ((port_conf && !port_conf->dequeue_depth) ||
694 (port_conf && port_conf->dequeue_depth >
695 dev->data->dev_conf.nb_event_port_dequeue_depth)) {
696 RTE_EDEV_LOG_ERR(
697 "dev%d port%d Invalid dequeue depth=%d max_dequeue_depth=%d",
698 dev_id, port_id, port_conf->dequeue_depth,
699 dev->data->dev_conf.nb_event_port_dequeue_depth);
700 return -EINVAL;
701 }
702
703 /* Check enqueue_depth limit */
704 if ((port_conf && !port_conf->enqueue_depth) ||
705 (port_conf && port_conf->enqueue_depth >
706 dev->data->dev_conf.nb_event_port_enqueue_depth)) {
707 RTE_EDEV_LOG_ERR(
708 "dev%d port%d Invalid enqueue depth=%d max_enqueue_depth=%d",
709 dev_id, port_id, port_conf->enqueue_depth,
710 dev->data->dev_conf.nb_event_port_enqueue_depth);
711 return -EINVAL;
712 }
713
714 if (dev->data->dev_started) {
715 RTE_EDEV_LOG_ERR(
716 "device %d must be stopped to allow port setup", dev_id);
717 return -EBUSY;
718 }
719
720 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_setup, -ENOTSUP);
721
722 if (port_conf == NULL) {
723 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_def_conf,
724 -ENOTSUP);
725 (*dev->dev_ops->port_def_conf)(dev, port_id, &def_conf);
726 port_conf = &def_conf;
727 }
728
729 dev->data->ports_dequeue_depth[port_id] =
730 port_conf->dequeue_depth;
731 dev->data->ports_enqueue_depth[port_id] =
732 port_conf->enqueue_depth;
733
734 diag = (*dev->dev_ops->port_setup)(dev, port_id, port_conf);
735
736 /* Unlink all the queues from this port(default state after setup) */
737 if (!diag)
738 diag = rte_event_port_unlink(dev_id, port_id, NULL, 0);
739
740 if (diag < 0)
741 return diag;
742
743 return 0;
744 }
745
746 uint8_t
747 rte_event_port_dequeue_depth(uint8_t dev_id, uint8_t port_id)
748 {
749 struct rte_eventdev *dev;
750
751 dev = &rte_eventdevs[dev_id];
752 return dev->data->ports_dequeue_depth[port_id];
753 }
754
755 uint8_t
756 rte_event_port_enqueue_depth(uint8_t dev_id, uint8_t port_id)
757 {
758 struct rte_eventdev *dev;
759
760 dev = &rte_eventdevs[dev_id];
761 return dev->data->ports_enqueue_depth[port_id];
762 }
763
764 uint8_t
765 rte_event_port_count(uint8_t dev_id)
766 {
767 struct rte_eventdev *dev;
768
769 dev = &rte_eventdevs[dev_id];
770 return dev->data->nb_ports;
771 }
772
773 int
774 rte_event_port_link(uint8_t dev_id, uint8_t port_id,
775 const uint8_t queues[], const uint8_t priorities[],
776 uint16_t nb_links)
777 {
778 struct rte_eventdev *dev;
779 uint8_t queues_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
780 uint8_t priorities_list[RTE_EVENT_MAX_QUEUES_PER_DEV];
781 uint16_t *links_map;
782 int i, diag;
783
784 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
785 dev = &rte_eventdevs[dev_id];
786 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_link, -ENOTSUP);
787
788 if (!is_valid_port(dev, port_id)) {
789 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
790 return -EINVAL;
791 }
792
793 if (queues == NULL) {
794 for (i = 0; i < dev->data->nb_queues; i++)
795 queues_list[i] = i;
796
797 queues = queues_list;
798 nb_links = dev->data->nb_queues;
799 }
800
801 if (priorities == NULL) {
802 for (i = 0; i < nb_links; i++)
803 priorities_list[i] = RTE_EVENT_DEV_PRIORITY_NORMAL;
804
805 priorities = priorities_list;
806 }
807
808 for (i = 0; i < nb_links; i++)
809 if (queues[i] >= dev->data->nb_queues)
810 return -EINVAL;
811
812 diag = (*dev->dev_ops->port_link)(dev, dev->data->ports[port_id],
813 queues, priorities, nb_links);
814 if (diag < 0)
815 return diag;
816
817 links_map = dev->data->links_map;
818 /* Point links_map to this port specific area */
819 links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
820 for (i = 0; i < diag; i++)
821 links_map[queues[i]] = (uint8_t)priorities[i];
822
823 return diag;
824 }
825
826 int
827 rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
828 uint8_t queues[], uint16_t nb_unlinks)
829 {
830 struct rte_eventdev *dev;
831 uint8_t all_queues[RTE_EVENT_MAX_QUEUES_PER_DEV];
832 int i, diag;
833 uint16_t *links_map;
834
835 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
836 dev = &rte_eventdevs[dev_id];
837 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->port_unlink, -ENOTSUP);
838
839 if (!is_valid_port(dev, port_id)) {
840 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
841 return -EINVAL;
842 }
843
844 if (queues == NULL) {
845 for (i = 0; i < dev->data->nb_queues; i++)
846 all_queues[i] = i;
847 queues = all_queues;
848 nb_unlinks = dev->data->nb_queues;
849 }
850
851 for (i = 0; i < nb_unlinks; i++)
852 if (queues[i] >= dev->data->nb_queues)
853 return -EINVAL;
854
855 diag = (*dev->dev_ops->port_unlink)(dev, dev->data->ports[port_id],
856 queues, nb_unlinks);
857
858 if (diag < 0)
859 return diag;
860
861 links_map = dev->data->links_map;
862 /* Point links_map to this port specific area */
863 links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
864 for (i = 0; i < diag; i++)
865 links_map[queues[i]] = EVENT_QUEUE_SERVICE_PRIORITY_INVALID;
866
867 return diag;
868 }
869
870 int
871 rte_event_port_links_get(uint8_t dev_id, uint8_t port_id,
872 uint8_t queues[], uint8_t priorities[])
873 {
874 struct rte_eventdev *dev;
875 uint16_t *links_map;
876 int i, count = 0;
877
878 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
879 dev = &rte_eventdevs[dev_id];
880 if (!is_valid_port(dev, port_id)) {
881 RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
882 return -EINVAL;
883 }
884
885 links_map = dev->data->links_map;
886 /* Point links_map to this port specific area */
887 links_map += (port_id * RTE_EVENT_MAX_QUEUES_PER_DEV);
888 for (i = 0; i < dev->data->nb_queues; i++) {
889 if (links_map[i] != EVENT_QUEUE_SERVICE_PRIORITY_INVALID) {
890 queues[count] = i;
891 priorities[count] = (uint8_t)links_map[i];
892 ++count;
893 }
894 }
895 return count;
896 }
897
898 int
899 rte_event_dequeue_timeout_ticks(uint8_t dev_id, uint64_t ns,
900 uint64_t *timeout_ticks)
901 {
902 struct rte_eventdev *dev;
903
904 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
905 dev = &rte_eventdevs[dev_id];
906 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->timeout_ticks, -ENOTSUP);
907
908 if (timeout_ticks == NULL)
909 return -EINVAL;
910
911 return (*dev->dev_ops->timeout_ticks)(dev, ns, timeout_ticks);
912 }
913
914 int
915 rte_event_dev_dump(uint8_t dev_id, FILE *f)
916 {
917 struct rte_eventdev *dev;
918
919 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
920 dev = &rte_eventdevs[dev_id];
921 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dump, -ENOTSUP);
922
923 (*dev->dev_ops->dump)(dev, f);
924 return 0;
925
926 }
927
928 static int
929 xstats_get_count(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
930 uint8_t queue_port_id)
931 {
932 struct rte_eventdev *dev = &rte_eventdevs[dev_id];
933 if (dev->dev_ops->xstats_get_names != NULL)
934 return (*dev->dev_ops->xstats_get_names)(dev, mode,
935 queue_port_id,
936 NULL, NULL, 0);
937 return 0;
938 }
939
940 int
941 rte_event_dev_xstats_names_get(uint8_t dev_id,
942 enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
943 struct rte_event_dev_xstats_name *xstats_names,
944 unsigned int *ids, unsigned int size)
945 {
946 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
947 const int cnt_expected_entries = xstats_get_count(dev_id, mode,
948 queue_port_id);
949 if (xstats_names == NULL || cnt_expected_entries < 0 ||
950 (int)size < cnt_expected_entries)
951 return cnt_expected_entries;
952
953 /* dev_id checked above */
954 const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
955
956 if (dev->dev_ops->xstats_get_names != NULL)
957 return (*dev->dev_ops->xstats_get_names)(dev, mode,
958 queue_port_id, xstats_names, ids, size);
959
960 return -ENOTSUP;
961 }
962
963 /* retrieve eventdev extended statistics */
964 int
965 rte_event_dev_xstats_get(uint8_t dev_id, enum rte_event_dev_xstats_mode mode,
966 uint8_t queue_port_id, const unsigned int ids[],
967 uint64_t values[], unsigned int n)
968 {
969 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -ENODEV);
970 const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
971
972 /* implemented by the driver */
973 if (dev->dev_ops->xstats_get != NULL)
974 return (*dev->dev_ops->xstats_get)(dev, mode, queue_port_id,
975 ids, values, n);
976 return -ENOTSUP;
977 }
978
979 uint64_t
980 rte_event_dev_xstats_by_name_get(uint8_t dev_id, const char *name,
981 unsigned int *id)
982 {
983 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, 0);
984 const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
985 unsigned int temp = -1;
986
987 if (id != NULL)
988 *id = (unsigned int)-1;
989 else
990 id = &temp; /* ensure driver never gets a NULL value */
991
992 /* implemented by driver */
993 if (dev->dev_ops->xstats_get_by_name != NULL)
994 return (*dev->dev_ops->xstats_get_by_name)(dev, name, id);
995 return -ENOTSUP;
996 }
997
998 int rte_event_dev_xstats_reset(uint8_t dev_id,
999 enum rte_event_dev_xstats_mode mode, int16_t queue_port_id,
1000 const uint32_t ids[], uint32_t nb_ids)
1001 {
1002 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1003 struct rte_eventdev *dev = &rte_eventdevs[dev_id];
1004
1005 if (dev->dev_ops->xstats_reset != NULL)
1006 return (*dev->dev_ops->xstats_reset)(dev, mode, queue_port_id,
1007 ids, nb_ids);
1008 return -ENOTSUP;
1009 }
1010
1011 int
1012 rte_event_dev_start(uint8_t dev_id)
1013 {
1014 struct rte_eventdev *dev;
1015 int diag;
1016
1017 RTE_EDEV_LOG_DEBUG("Start dev_id=%" PRIu8, dev_id);
1018
1019 RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, -EINVAL);
1020 dev = &rte_eventdevs[dev_id];
1021 RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_start, -ENOTSUP);
1022
1023 if (dev->data->dev_started != 0) {
1024 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already started",
1025 dev_id);
1026 return 0;
1027 }
1028
1029 diag = (*dev->dev_ops->dev_start)(dev);
1030 if (diag == 0)
1031 dev->data->dev_started = 1;
1032 else
1033 return diag;
1034
1035 return 0;
1036 }
1037
1038 void
1039 rte_event_dev_stop(uint8_t dev_id)
1040 {
1041 struct rte_eventdev *dev;
1042
1043 RTE_EDEV_LOG_DEBUG("Stop dev_id=%" PRIu8, dev_id);
1044
1045 RTE_EVENTDEV_VALID_DEVID_OR_RET(dev_id);
1046 dev = &rte_eventdevs[dev_id];
1047 RTE_FUNC_PTR_OR_RET(*dev->dev_ops->dev_stop);
1048
1049 if (dev->data->dev_started == 0) {
1050 RTE_EDEV_LOG_ERR("Device with dev_id=%" PRIu8 "already stopped",
1051 dev_id);
1052 return;
1053 }
1054
1055 dev->data->dev_started = 0;
1056 (*dev->dev_ops->dev_stop)(dev);
1057 }
1058
1059 int
1060 rte_event_dev_close(uint8_t dev_id)
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->dev_close, -ENOTSUP);
1067
1068 /* Device must be stopped before it can be closed */
1069 if (dev->data->dev_started == 1) {
1070 RTE_EDEV_LOG_ERR("Device %u must be stopped before closing",
1071 dev_id);
1072 return -EBUSY;
1073 }
1074
1075 return (*dev->dev_ops->dev_close)(dev);
1076 }
1077
1078 static inline int
1079 rte_eventdev_data_alloc(uint8_t dev_id, struct rte_eventdev_data **data,
1080 int socket_id)
1081 {
1082 char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1083 const struct rte_memzone *mz;
1084 int n;
1085
1086 /* Generate memzone name */
1087 n = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u", dev_id);
1088 if (n >= (int)sizeof(mz_name))
1089 return -EINVAL;
1090
1091 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1092 mz = rte_memzone_reserve(mz_name,
1093 sizeof(struct rte_eventdev_data),
1094 socket_id, 0);
1095 } else
1096 mz = rte_memzone_lookup(mz_name);
1097
1098 if (mz == NULL)
1099 return -ENOMEM;
1100
1101 *data = mz->addr;
1102 if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1103 memset(*data, 0, sizeof(struct rte_eventdev_data));
1104
1105 return 0;
1106 }
1107
1108 static inline uint8_t
1109 rte_eventdev_find_free_device_index(void)
1110 {
1111 uint8_t dev_id;
1112
1113 for (dev_id = 0; dev_id < RTE_EVENT_MAX_DEVS; dev_id++) {
1114 if (rte_eventdevs[dev_id].attached ==
1115 RTE_EVENTDEV_DETACHED)
1116 return dev_id;
1117 }
1118 return RTE_EVENT_MAX_DEVS;
1119 }
1120
1121 struct rte_eventdev *
1122 rte_event_pmd_allocate(const char *name, int socket_id)
1123 {
1124 struct rte_eventdev *eventdev;
1125 uint8_t dev_id;
1126
1127 if (rte_event_pmd_get_named_dev(name) != NULL) {
1128 RTE_EDEV_LOG_ERR("Event device with name %s already "
1129 "allocated!", name);
1130 return NULL;
1131 }
1132
1133 dev_id = rte_eventdev_find_free_device_index();
1134 if (dev_id == RTE_EVENT_MAX_DEVS) {
1135 RTE_EDEV_LOG_ERR("Reached maximum number of event devices");
1136 return NULL;
1137 }
1138
1139 eventdev = &rte_eventdevs[dev_id];
1140
1141 if (eventdev->data == NULL) {
1142 struct rte_eventdev_data *eventdev_data = NULL;
1143
1144 int retval = rte_eventdev_data_alloc(dev_id, &eventdev_data,
1145 socket_id);
1146
1147 if (retval < 0 || eventdev_data == NULL)
1148 return NULL;
1149
1150 eventdev->data = eventdev_data;
1151
1152 snprintf(eventdev->data->name, RTE_EVENTDEV_NAME_MAX_LEN,
1153 "%s", name);
1154
1155 eventdev->data->dev_id = dev_id;
1156 eventdev->data->socket_id = socket_id;
1157 eventdev->data->dev_started = 0;
1158
1159 eventdev->attached = RTE_EVENTDEV_ATTACHED;
1160
1161 eventdev_globals.nb_devs++;
1162 }
1163
1164 return eventdev;
1165 }
1166
1167 int
1168 rte_event_pmd_release(struct rte_eventdev *eventdev)
1169 {
1170 int ret;
1171 char mz_name[RTE_EVENTDEV_NAME_MAX_LEN];
1172 const struct rte_memzone *mz;
1173
1174 if (eventdev == NULL)
1175 return -EINVAL;
1176
1177 ret = rte_event_dev_close(eventdev->data->dev_id);
1178 if (ret < 0)
1179 return ret;
1180
1181 eventdev->attached = RTE_EVENTDEV_DETACHED;
1182 eventdev_globals.nb_devs--;
1183
1184 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1185 rte_free(eventdev->data->dev_private);
1186
1187 /* Generate memzone name */
1188 ret = snprintf(mz_name, sizeof(mz_name), "rte_eventdev_data_%u",
1189 eventdev->data->dev_id);
1190 if (ret >= (int)sizeof(mz_name))
1191 return -EINVAL;
1192
1193 mz = rte_memzone_lookup(mz_name);
1194 if (mz == NULL)
1195 return -ENOMEM;
1196
1197 ret = rte_memzone_free(mz);
1198 if (ret)
1199 return ret;
1200 }
1201
1202 eventdev->data = NULL;
1203 return 0;
1204 }
1205
1206 struct rte_eventdev *
1207 rte_event_pmd_vdev_init(const char *name, size_t dev_private_size,
1208 int socket_id)
1209 {
1210 struct rte_eventdev *eventdev;
1211
1212 /* Allocate device structure */
1213 eventdev = rte_event_pmd_allocate(name, socket_id);
1214 if (eventdev == NULL)
1215 return NULL;
1216
1217 /* Allocate private device structure */
1218 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1219 eventdev->data->dev_private =
1220 rte_zmalloc_socket("eventdev device private",
1221 dev_private_size,
1222 RTE_CACHE_LINE_SIZE,
1223 socket_id);
1224
1225 if (eventdev->data->dev_private == NULL)
1226 rte_panic("Cannot allocate memzone for private device"
1227 " data");
1228 }
1229
1230 return eventdev;
1231 }
1232
1233 int
1234 rte_event_pmd_vdev_uninit(const char *name)
1235 {
1236 struct rte_eventdev *eventdev;
1237
1238 if (name == NULL)
1239 return -EINVAL;
1240
1241 eventdev = rte_event_pmd_get_named_dev(name);
1242 if (eventdev == NULL)
1243 return -ENODEV;
1244
1245 /* Free the event device */
1246 rte_event_pmd_release(eventdev);
1247
1248 return 0;
1249 }
1250
1251 int
1252 rte_event_pmd_pci_probe(struct rte_pci_driver *pci_drv,
1253 struct rte_pci_device *pci_dev)
1254 {
1255 struct rte_eventdev_driver *eventdrv;
1256 struct rte_eventdev *eventdev;
1257
1258 char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
1259
1260 int retval;
1261
1262 eventdrv = (struct rte_eventdev_driver *)pci_drv;
1263 if (eventdrv == NULL)
1264 return -ENODEV;
1265
1266 rte_pci_device_name(&pci_dev->addr, eventdev_name,
1267 sizeof(eventdev_name));
1268
1269 eventdev = rte_event_pmd_allocate(eventdev_name,
1270 pci_dev->device.numa_node);
1271 if (eventdev == NULL)
1272 return -ENOMEM;
1273
1274 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
1275 eventdev->data->dev_private =
1276 rte_zmalloc_socket(
1277 "eventdev private structure",
1278 eventdrv->dev_private_size,
1279 RTE_CACHE_LINE_SIZE,
1280 rte_socket_id());
1281
1282 if (eventdev->data->dev_private == NULL)
1283 rte_panic("Cannot allocate memzone for private "
1284 "device data");
1285 }
1286
1287 eventdev->dev = &pci_dev->device;
1288 eventdev->driver = eventdrv;
1289
1290 /* Invoke PMD device initialization function */
1291 retval = (*eventdrv->eventdev_init)(eventdev);
1292 if (retval == 0)
1293 return 0;
1294
1295 RTE_EDEV_LOG_ERR("driver %s: (vendor_id=0x%x device_id=0x%x)"
1296 " failed", pci_drv->driver.name,
1297 (unsigned int) pci_dev->id.vendor_id,
1298 (unsigned int) pci_dev->id.device_id);
1299
1300 if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1301 rte_free(eventdev->data->dev_private);
1302
1303 eventdev->attached = RTE_EVENTDEV_DETACHED;
1304 eventdev_globals.nb_devs--;
1305
1306 return -ENXIO;
1307 }
1308
1309 int
1310 rte_event_pmd_pci_remove(struct rte_pci_device *pci_dev)
1311 {
1312 const struct rte_eventdev_driver *eventdrv;
1313 struct rte_eventdev *eventdev;
1314 char eventdev_name[RTE_EVENTDEV_NAME_MAX_LEN];
1315 int ret;
1316
1317 if (pci_dev == NULL)
1318 return -EINVAL;
1319
1320 rte_pci_device_name(&pci_dev->addr, eventdev_name,
1321 sizeof(eventdev_name));
1322
1323 eventdev = rte_event_pmd_get_named_dev(eventdev_name);
1324 if (eventdev == NULL)
1325 return -ENODEV;
1326
1327 eventdrv = (const struct rte_eventdev_driver *)pci_dev->driver;
1328 if (eventdrv == NULL)
1329 return -ENODEV;
1330
1331 /* Invoke PMD device un-init function */
1332 if (*eventdrv->eventdev_uninit) {
1333 ret = (*eventdrv->eventdev_uninit)(eventdev);
1334 if (ret)
1335 return ret;
1336 }
1337
1338 /* Free event device */
1339 rte_event_pmd_release(eventdev);
1340
1341 eventdev->dev = NULL;
1342 eventdev->driver = NULL;
1343
1344 return 0;
1345 }
Ceph