net/bnxt: use first completion ring for fwd and async event
[dpdk.git] / 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 static int bbdev_logtype;
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 * __rte_experimental
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 __rte_experimental
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 * __rte_experimental
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 __rte_experimental
289 rte_bbdev_count(void)
290 {
291         return num_devs;
292 }
293
294 bool __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 bdev %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 bdev %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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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 __rte_experimental
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->bus = rte_bus_find_by_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 __rte_experimental
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         default:
850                 break;
851         }
852
853         return result;
854 }
855
856 /* Initialise a bbdev_op structure */
857 static void
858 bbdev_op_init(struct rte_mempool *mempool, void *arg, void *element,
859                 __rte_unused unsigned int n)
860 {
861         enum rte_bbdev_op_type type = *(enum rte_bbdev_op_type *)arg;
862
863         if (type == RTE_BBDEV_OP_TURBO_DEC) {
864                 struct rte_bbdev_dec_op *op = element;
865                 memset(op, 0, mempool->elt_size);
866                 op->mempool = mempool;
867         } else if (type == RTE_BBDEV_OP_TURBO_ENC) {
868                 struct rte_bbdev_enc_op *op = element;
869                 memset(op, 0, mempool->elt_size);
870                 op->mempool = mempool;
871         }
872 }
873
874 struct rte_mempool * __rte_experimental
875 rte_bbdev_op_pool_create(const char *name, enum rte_bbdev_op_type type,
876                 unsigned int num_elements, unsigned int cache_size,
877                 int socket_id)
878 {
879         struct rte_bbdev_op_pool_private *priv;
880         struct rte_mempool *mp;
881         const char *op_type_str;
882
883         if (name == NULL) {
884                 rte_bbdev_log(ERR, "NULL name for op pool");
885                 return NULL;
886         }
887
888         if (type >= RTE_BBDEV_OP_TYPE_COUNT) {
889                 rte_bbdev_log(ERR,
890                                 "Invalid op type (%u), should be less than %u",
891                                 type, RTE_BBDEV_OP_TYPE_COUNT);
892                 return NULL;
893         }
894
895         mp = rte_mempool_create(name, num_elements, get_bbdev_op_size(type),
896                         cache_size, sizeof(struct rte_bbdev_op_pool_private),
897                         NULL, NULL, bbdev_op_init, &type, socket_id, 0);
898         if (mp == NULL) {
899                 rte_bbdev_log(ERR,
900                                 "Failed to create op pool %s (num ops=%u, op size=%u) with error: %s",
901                                 name, num_elements, get_bbdev_op_size(type),
902                                 rte_strerror(rte_errno));
903                 return NULL;
904         }
905
906         op_type_str = rte_bbdev_op_type_str(type);
907         if (op_type_str == NULL)
908                 return NULL;
909
910         rte_bbdev_log_debug(
911                         "Op pool %s created for %u ops (type=%s, cache=%u, socket=%u, size=%u)",
912                         name, num_elements, op_type_str, cache_size, socket_id,
913                         get_bbdev_op_size(type));
914
915         priv = (struct rte_bbdev_op_pool_private *)rte_mempool_get_priv(mp);
916         priv->type = type;
917
918         return mp;
919 }
920
921 int __rte_experimental
922 rte_bbdev_callback_register(uint16_t dev_id, enum rte_bbdev_event_type event,
923                 rte_bbdev_cb_fn cb_fn, void *cb_arg)
924 {
925         struct rte_bbdev_callback *user_cb;
926         struct rte_bbdev *dev = get_dev(dev_id);
927         VALID_DEV_OR_RET_ERR(dev, dev_id);
928
929         if (event >= RTE_BBDEV_EVENT_MAX) {
930                 rte_bbdev_log(ERR,
931                                 "Invalid event type (%u), should be less than %u",
932                                 event, RTE_BBDEV_EVENT_MAX);
933                 return -EINVAL;
934         }
935
936         if (cb_fn == NULL) {
937                 rte_bbdev_log(ERR, "NULL callback function");
938                 return -EINVAL;
939         }
940
941         rte_spinlock_lock(&rte_bbdev_cb_lock);
942
943         TAILQ_FOREACH(user_cb, &(dev->list_cbs), next) {
944                 if (user_cb->cb_fn == cb_fn &&
945                                 user_cb->cb_arg == cb_arg &&
946                                 user_cb->event == event)
947                         break;
948         }
949
950         /* create a new callback. */
951         if (user_cb == NULL) {
952                 user_cb = rte_zmalloc("INTR_USER_CALLBACK",
953                                 sizeof(struct rte_bbdev_callback), 0);
954                 if (user_cb != NULL) {
955                         user_cb->cb_fn = cb_fn;
956                         user_cb->cb_arg = cb_arg;
957                         user_cb->event = event;
958                         TAILQ_INSERT_TAIL(&(dev->list_cbs), user_cb, next);
959                 }
960         }
961
962         rte_spinlock_unlock(&rte_bbdev_cb_lock);
963         return (user_cb == NULL) ? -ENOMEM : 0;
964 }
965
966 int __rte_experimental
967 rte_bbdev_callback_unregister(uint16_t dev_id, enum rte_bbdev_event_type event,
968                 rte_bbdev_cb_fn cb_fn, void *cb_arg)
969 {
970         int ret = 0;
971         struct rte_bbdev_callback *cb, *next;
972         struct rte_bbdev *dev = get_dev(dev_id);
973         VALID_DEV_OR_RET_ERR(dev, dev_id);
974
975         if (event >= RTE_BBDEV_EVENT_MAX) {
976                 rte_bbdev_log(ERR,
977                                 "Invalid event type (%u), should be less than %u",
978                                 event, RTE_BBDEV_EVENT_MAX);
979                 return -EINVAL;
980         }
981
982         if (cb_fn == NULL) {
983                 rte_bbdev_log(ERR,
984                                 "NULL callback function cannot be unregistered");
985                 return -EINVAL;
986         }
987
988         dev = &rte_bbdev_devices[dev_id];
989         rte_spinlock_lock(&rte_bbdev_cb_lock);
990
991         for (cb = TAILQ_FIRST(&dev->list_cbs); cb != NULL; cb = next) {
992
993                 next = TAILQ_NEXT(cb, next);
994
995                 if (cb->cb_fn != cb_fn || cb->event != event ||
996                                 (cb_arg != (void *)-1 && cb->cb_arg != cb_arg))
997                         continue;
998
999                 /* If this callback is not executing right now, remove it. */
1000                 if (cb->active == 0) {
1001                         TAILQ_REMOVE(&(dev->list_cbs), cb, next);
1002                         rte_free(cb);
1003                 } else
1004                         ret = -EAGAIN;
1005         }
1006
1007         rte_spinlock_unlock(&rte_bbdev_cb_lock);
1008         return ret;
1009 }
1010
1011 void __rte_experimental
1012 rte_bbdev_pmd_callback_process(struct rte_bbdev *dev,
1013         enum rte_bbdev_event_type event, void *ret_param)
1014 {
1015         struct rte_bbdev_callback *cb_lst;
1016         struct rte_bbdev_callback dev_cb;
1017
1018         if (dev == NULL) {
1019                 rte_bbdev_log(ERR, "NULL device");
1020                 return;
1021         }
1022
1023         if (dev->data == NULL) {
1024                 rte_bbdev_log(ERR, "NULL data structure");
1025                 return;
1026         }
1027
1028         if (event >= RTE_BBDEV_EVENT_MAX) {
1029                 rte_bbdev_log(ERR,
1030                                 "Invalid event type (%u), should be less than %u",
1031                                 event, RTE_BBDEV_EVENT_MAX);
1032                 return;
1033         }
1034
1035         rte_spinlock_lock(&rte_bbdev_cb_lock);
1036         TAILQ_FOREACH(cb_lst, &(dev->list_cbs), next) {
1037                 if (cb_lst->cb_fn == NULL || cb_lst->event != event)
1038                         continue;
1039                 dev_cb = *cb_lst;
1040                 cb_lst->active = 1;
1041                 if (ret_param != NULL)
1042                         dev_cb.ret_param = ret_param;
1043
1044                 rte_spinlock_unlock(&rte_bbdev_cb_lock);
1045                 dev_cb.cb_fn(dev->data->dev_id, dev_cb.event,
1046                                 dev_cb.cb_arg, dev_cb.ret_param);
1047                 rte_spinlock_lock(&rte_bbdev_cb_lock);
1048                 cb_lst->active = 0;
1049         }
1050         rte_spinlock_unlock(&rte_bbdev_cb_lock);
1051 }
1052
1053 int __rte_experimental
1054 rte_bbdev_queue_intr_enable(uint16_t dev_id, uint16_t queue_id)
1055 {
1056         struct rte_bbdev *dev = get_dev(dev_id);
1057         VALID_DEV_OR_RET_ERR(dev, dev_id);
1058         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
1059         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
1060         VALID_FUNC_OR_RET_ERR(dev->dev_ops->queue_intr_enable, dev_id);
1061         return dev->dev_ops->queue_intr_enable(dev, queue_id);
1062 }
1063
1064 int __rte_experimental
1065 rte_bbdev_queue_intr_disable(uint16_t dev_id, uint16_t queue_id)
1066 {
1067         struct rte_bbdev *dev = get_dev(dev_id);
1068         VALID_DEV_OR_RET_ERR(dev, dev_id);
1069         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
1070         VALID_DEV_OPS_OR_RET_ERR(dev, dev_id);
1071         VALID_FUNC_OR_RET_ERR(dev->dev_ops->queue_intr_disable, dev_id);
1072         return dev->dev_ops->queue_intr_disable(dev, queue_id);
1073 }
1074
1075 int __rte_experimental
1076 rte_bbdev_queue_intr_ctl(uint16_t dev_id, uint16_t queue_id, int epfd, int op,
1077                 void *data)
1078 {
1079         uint32_t vec;
1080         struct rte_bbdev *dev = get_dev(dev_id);
1081         struct rte_intr_handle *intr_handle;
1082         int ret;
1083
1084         VALID_DEV_OR_RET_ERR(dev, dev_id);
1085         VALID_QUEUE_OR_RET_ERR(queue_id, dev);
1086
1087         intr_handle = dev->intr_handle;
1088         if (!intr_handle || !intr_handle->intr_vec) {
1089                 rte_bbdev_log(ERR, "Device %u intr handle unset\n", dev_id);
1090                 return -ENOTSUP;
1091         }
1092
1093         if (queue_id >= RTE_MAX_RXTX_INTR_VEC_ID) {
1094                 rte_bbdev_log(ERR, "Device %u queue_id %u is too big\n",
1095                                 dev_id, queue_id);
1096                 return -ENOTSUP;
1097         }
1098
1099         vec = intr_handle->intr_vec[queue_id];
1100         ret = rte_intr_rx_ctl(intr_handle, epfd, op, vec, data);
1101         if (ret && (ret != -EEXIST)) {
1102                 rte_bbdev_log(ERR,
1103                                 "dev %u q %u int ctl error op %d epfd %d vec %u\n",
1104                                 dev_id, queue_id, op, epfd, vec);
1105                 return ret;
1106         }
1107
1108         return 0;
1109 }
1110
1111
1112 const char * __rte_experimental
1113 rte_bbdev_op_type_str(enum rte_bbdev_op_type op_type)
1114 {
1115         static const char * const op_types[] = {
1116                 "RTE_BBDEV_OP_NONE",
1117                 "RTE_BBDEV_OP_TURBO_DEC",
1118                 "RTE_BBDEV_OP_TURBO_ENC",
1119         };
1120
1121         if (op_type < RTE_BBDEV_OP_TYPE_COUNT)
1122                 return op_types[op_type];
1123
1124         rte_bbdev_log(ERR, "Invalid operation type");
1125         return NULL;
1126 }
1127
1128 RTE_INIT(rte_bbdev_init_log);
1129 static void
1130 rte_bbdev_init_log(void)
1131 {
1132         bbdev_logtype = rte_log_register("lib.bbdev");
1133         if (bbdev_logtype >= 0)
1134                 rte_log_set_level(bbdev_logtype, RTE_LOG_NOTICE);
1135 }