1 // SPDX-License-Identifier: GPL-2.0
3 * Broadcom BM2835 V4L2 driver
5 * Copyright © 2013 Raspberry Pi (Trading) Ltd.
7 * Authors: Vincent Sanders @ Collabora
8 * Dave Stevenson @ Broadcom
9 * (now dave.stevenson@raspberrypi.org)
10 * Simon Mellor @ Broadcom
11 * Luke Diamand @ Broadcom
13 * V4L2 driver MMAL vchiq interface code
16 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18 #include <linux/errno.h>
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/mutex.h>
23 #include <linux/slab.h>
24 #include <linux/completion.h>
25 #include <linux/vmalloc.h>
26 #include <linux/raspberrypi/vchiq.h>
27 #include <media/videobuf2-vmalloc.h>
29 #include "mmal-common.h"
30 #include "mmal-vchiq.h"
34 * maximum number of components supported.
35 * This matches the maximum permitted by default on the VPU
37 #define VCHIQ_MMAL_MAX_COMPONENTS 64
40 * Timeout for synchronous msg responses in seconds.
41 * Helpful to increase this if stopping in the VPU debugger.
43 #define SYNC_MSG_TIMEOUT 3
45 /*#define FULL_MSG_DUMP 1*/
48 static const char *const msg_type_names
[] = {
66 "GET_CORE_STATS_FOR_PORT",
70 "OPAQUE_ALLOCATOR_DESC",
73 "BUFFER_FROM_HOST_ZEROLEN",
79 static const char *const port_action_type_names
[] = {
90 #if defined(FULL_MSG_DUMP)
91 #define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE) \
93 pr_debug(TITLE" type:%s(%d) length:%d\n", \
94 msg_type_names[(MSG)->h.type], \
95 (MSG)->h.type, (MSG_LEN)); \
96 print_hex_dump(KERN_DEBUG, "<<h: ", DUMP_PREFIX_OFFSET, \
98 sizeof(struct mmal_msg_header), 1); \
99 print_hex_dump(KERN_DEBUG, "<<p: ", DUMP_PREFIX_OFFSET, \
101 ((u8 *)(MSG)) + sizeof(struct mmal_msg_header),\
102 (MSG_LEN) - sizeof(struct mmal_msg_header), 1); \
105 #define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE) \
107 pr_debug(TITLE" type:%s(%d) length:%d\n", \
108 msg_type_names[(MSG)->h.type], \
109 (MSG)->h.type, (MSG_LEN)); \
113 #define DBG_DUMP_MSG(MSG, MSG_LEN, TITLE)
116 struct vchiq_mmal_instance
;
118 /* normal message context */
119 struct mmal_msg_context
{
120 struct vchiq_mmal_instance
*instance
;
122 /* Index in the context_map idr so that we can find the
123 * mmal_msg_context again when servicing the VCHI reply.
129 /* work struct for buffer_cb callback */
130 struct work_struct work
;
131 /* work struct for deferred callback */
132 struct work_struct buffer_to_host_work
;
134 struct vchiq_mmal_instance
*instance
;
136 struct vchiq_mmal_port
*port
;
137 /* actual buffer used to store bulk reply */
138 struct mmal_buffer
*buffer
;
139 /* amount of buffer used */
140 unsigned long buffer_used
;
141 /* MMAL buffer flags */
143 /* Presentation and Decode timestamps */
147 int status
; /* context status */
149 } bulk
; /* bulk data */
152 /* message handle to release */
153 struct vchiq_header
*msg_handle
;
154 /* pointer to received message */
155 struct mmal_msg
*msg
;
156 /* received message length */
158 /* completion upon reply */
159 struct completion cmplt
;
160 } sync
; /* synchronous response */
165 struct vchiq_mmal_instance
{
166 unsigned int service_handle
;
168 /* ensure serialised access to service */
169 struct mutex vchiq_mutex
;
171 /* vmalloc page to receive scratch bulk xfers into */
174 struct idr context_map
;
175 /* protect accesses to context_map */
176 struct mutex context_map_lock
;
178 struct vchiq_mmal_component component
[VCHIQ_MMAL_MAX_COMPONENTS
];
180 /* ordered workqueue to process all bulk operations */
181 struct workqueue_struct
*bulk_wq
;
184 static struct mmal_msg_context
*
185 get_msg_context(struct vchiq_mmal_instance
*instance
)
187 struct mmal_msg_context
*msg_context
;
190 /* todo: should this be allocated from a pool to avoid kzalloc */
191 msg_context
= kzalloc(sizeof(*msg_context
), GFP_KERNEL
);
194 return ERR_PTR(-ENOMEM
);
196 /* Create an ID that will be passed along with our message so
197 * that when we service the VCHI reply, we can look up what
198 * message is being replied to.
200 mutex_lock(&instance
->context_map_lock
);
201 handle
= idr_alloc(&instance
->context_map
, msg_context
,
203 mutex_unlock(&instance
->context_map_lock
);
207 return ERR_PTR(handle
);
210 msg_context
->instance
= instance
;
211 msg_context
->handle
= handle
;
216 static struct mmal_msg_context
*
217 lookup_msg_context(struct vchiq_mmal_instance
*instance
, int handle
)
219 return idr_find(&instance
->context_map
, handle
);
223 release_msg_context(struct mmal_msg_context
*msg_context
)
225 struct vchiq_mmal_instance
*instance
= msg_context
->instance
;
227 mutex_lock(&instance
->context_map_lock
);
228 idr_remove(&instance
->context_map
, msg_context
->handle
);
229 mutex_unlock(&instance
->context_map_lock
);
233 /* deals with receipt of event to host message */
234 static void event_to_host_cb(struct vchiq_mmal_instance
*instance
,
235 struct mmal_msg
*msg
, u32 msg_len
)
237 pr_debug("unhandled event\n");
238 pr_debug("component:%u port type:%d num:%d cmd:0x%x length:%d\n",
239 msg
->u
.event_to_host
.client_component
,
240 msg
->u
.event_to_host
.port_type
,
241 msg
->u
.event_to_host
.port_num
,
242 msg
->u
.event_to_host
.cmd
, msg
->u
.event_to_host
.length
);
245 /* workqueue scheduled callback
247 * we do this because it is important we do not call any other vchiq
248 * sync calls from witin the message delivery thread
250 static void buffer_work_cb(struct work_struct
*work
)
252 struct mmal_msg_context
*msg_context
=
253 container_of(work
, struct mmal_msg_context
, u
.bulk
.work
);
254 struct mmal_buffer
*buffer
= msg_context
->u
.bulk
.buffer
;
257 pr_err("%s: ctx: %p, No mmal buffer to pass details\n",
258 __func__
, msg_context
);
262 buffer
->length
= msg_context
->u
.bulk
.buffer_used
;
263 buffer
->mmal_flags
= msg_context
->u
.bulk
.mmal_flags
;
264 buffer
->dts
= msg_context
->u
.bulk
.dts
;
265 buffer
->pts
= msg_context
->u
.bulk
.pts
;
267 atomic_dec(&msg_context
->u
.bulk
.port
->buffers_with_vpu
);
269 msg_context
->u
.bulk
.port
->buffer_cb(msg_context
->u
.bulk
.instance
,
270 msg_context
->u
.bulk
.port
,
271 msg_context
->u
.bulk
.status
,
272 msg_context
->u
.bulk
.buffer
);
275 /* workqueue scheduled callback to handle receiving buffers
277 * VCHI will allow up to 4 bulk receives to be scheduled before blocking.
278 * If we block in the service_callback context then we can't process the
279 * VCHI_CALLBACK_BULK_RECEIVED message that would otherwise allow the blocked
280 * vchiq_bulk_receive() call to complete.
282 static void buffer_to_host_work_cb(struct work_struct
*work
)
284 struct mmal_msg_context
*msg_context
=
285 container_of(work
, struct mmal_msg_context
,
286 u
.bulk
.buffer_to_host_work
);
287 struct vchiq_mmal_instance
*instance
= msg_context
->instance
;
288 unsigned long len
= msg_context
->u
.bulk
.buffer_used
;
292 /* Dummy receive to ensure the buffers remain in order */
294 /* queue the bulk submission */
295 vchiq_use_service(instance
->service_handle
);
296 ret
= vchiq_bulk_receive(instance
->service_handle
,
297 msg_context
->u
.bulk
.buffer
->buffer
,
298 /* Actual receive needs to be a multiple
303 VCHIQ_BULK_MODE_CALLBACK
);
305 vchiq_release_service(instance
->service_handle
);
308 pr_err("%s: ctx: %p, vchiq_bulk_receive failed %d\n",
309 __func__
, msg_context
, ret
);
312 /* enqueue a bulk receive for a given message context */
313 static int bulk_receive(struct vchiq_mmal_instance
*instance
,
314 struct mmal_msg
*msg
,
315 struct mmal_msg_context
*msg_context
)
317 unsigned long rd_len
;
319 rd_len
= msg
->u
.buffer_from_host
.buffer_header
.length
;
321 if (!msg_context
->u
.bulk
.buffer
) {
322 pr_err("bulk.buffer not configured - error in buffer_from_host\n");
324 /* todo: this is a serious error, we should never have
325 * committed a buffer_to_host operation to the mmal
326 * port without the buffer to back it up (underflow
327 * handling) and there is no obvious way to deal with
328 * this - how is the mmal servie going to react when
329 * we fail to do the xfer and reschedule a buffer when
330 * it arrives? perhaps a starved flag to indicate a
331 * waiting bulk receive?
337 /* ensure we do not overrun the available buffer */
338 if (rd_len
> msg_context
->u
.bulk
.buffer
->buffer_size
) {
339 rd_len
= msg_context
->u
.bulk
.buffer
->buffer_size
;
340 pr_warn("short read as not enough receive buffer space\n");
341 /* todo: is this the correct response, what happens to
342 * the rest of the message data?
347 msg_context
->u
.bulk
.buffer_used
= rd_len
;
348 msg_context
->u
.bulk
.dts
= msg
->u
.buffer_from_host
.buffer_header
.dts
;
349 msg_context
->u
.bulk
.pts
= msg
->u
.buffer_from_host
.buffer_header
.pts
;
351 queue_work(msg_context
->instance
->bulk_wq
,
352 &msg_context
->u
.bulk
.buffer_to_host_work
);
357 /* data in message, memcpy from packet into output buffer */
358 static int inline_receive(struct vchiq_mmal_instance
*instance
,
359 struct mmal_msg
*msg
,
360 struct mmal_msg_context
*msg_context
)
362 memcpy(msg_context
->u
.bulk
.buffer
->buffer
,
363 msg
->u
.buffer_from_host
.short_data
,
364 msg
->u
.buffer_from_host
.payload_in_message
);
366 msg_context
->u
.bulk
.buffer_used
=
367 msg
->u
.buffer_from_host
.payload_in_message
;
372 /* queue the buffer availability with MMAL_MSG_TYPE_BUFFER_FROM_HOST */
374 buffer_from_host(struct vchiq_mmal_instance
*instance
,
375 struct vchiq_mmal_port
*port
, struct mmal_buffer
*buf
)
377 struct mmal_msg_context
*msg_context
;
384 pr_debug("instance:%u buffer:%p\n", instance
->service_handle
, buf
);
387 if (!buf
->msg_context
) {
388 pr_err("%s: msg_context not allocated, buf %p\n", __func__
,
392 msg_context
= buf
->msg_context
;
394 /* store bulk message context for when data arrives */
395 msg_context
->u
.bulk
.instance
= instance
;
396 msg_context
->u
.bulk
.port
= port
;
397 msg_context
->u
.bulk
.buffer
= buf
;
398 msg_context
->u
.bulk
.buffer_used
= 0;
400 /* initialise work structure ready to schedule callback */
401 INIT_WORK(&msg_context
->u
.bulk
.work
, buffer_work_cb
);
402 INIT_WORK(&msg_context
->u
.bulk
.buffer_to_host_work
,
403 buffer_to_host_work_cb
);
405 atomic_inc(&port
->buffers_with_vpu
);
407 /* prep the buffer from host message */
408 memset(&m
, 0xbc, sizeof(m
)); /* just to make debug clearer */
410 m
.h
.type
= MMAL_MSG_TYPE_BUFFER_FROM_HOST
;
411 m
.h
.magic
= MMAL_MAGIC
;
412 m
.h
.context
= msg_context
->handle
;
415 /* drvbuf is our private data passed back */
416 m
.u
.buffer_from_host
.drvbuf
.magic
= MMAL_MAGIC
;
417 m
.u
.buffer_from_host
.drvbuf
.component_handle
= port
->component
->handle
;
418 m
.u
.buffer_from_host
.drvbuf
.port_handle
= port
->handle
;
419 m
.u
.buffer_from_host
.drvbuf
.client_context
= msg_context
->handle
;
422 m
.u
.buffer_from_host
.buffer_header
.cmd
= 0;
423 m
.u
.buffer_from_host
.buffer_header
.data
=
424 (u32
)(unsigned long)buf
->buffer
;
425 m
.u
.buffer_from_host
.buffer_header
.alloc_size
= buf
->buffer_size
;
426 m
.u
.buffer_from_host
.buffer_header
.length
= 0; /* nothing used yet */
427 m
.u
.buffer_from_host
.buffer_header
.offset
= 0; /* no offset */
428 m
.u
.buffer_from_host
.buffer_header
.flags
= 0; /* no flags */
429 m
.u
.buffer_from_host
.buffer_header
.pts
= MMAL_TIME_UNKNOWN
;
430 m
.u
.buffer_from_host
.buffer_header
.dts
= MMAL_TIME_UNKNOWN
;
432 /* clear buffer type sepecific data */
433 memset(&m
.u
.buffer_from_host
.buffer_header_type_specific
, 0,
434 sizeof(m
.u
.buffer_from_host
.buffer_header_type_specific
));
436 /* no payload in message */
437 m
.u
.buffer_from_host
.payload_in_message
= 0;
439 vchiq_use_service(instance
->service_handle
);
441 ret
= vchiq_queue_kernel_message(instance
->service_handle
, &m
,
442 sizeof(struct mmal_msg_header
) +
443 sizeof(m
.u
.buffer_from_host
));
445 atomic_dec(&port
->buffers_with_vpu
);
447 vchiq_release_service(instance
->service_handle
);
452 /* deals with receipt of buffer to host message */
453 static void buffer_to_host_cb(struct vchiq_mmal_instance
*instance
,
454 struct mmal_msg
*msg
, u32 msg_len
)
456 struct mmal_msg_context
*msg_context
;
459 pr_debug("%s: instance:%p msg:%p msg_len:%d\n",
460 __func__
, instance
, msg
, msg_len
);
462 if (msg
->u
.buffer_from_host
.drvbuf
.magic
== MMAL_MAGIC
) {
463 handle
= msg
->u
.buffer_from_host
.drvbuf
.client_context
;
464 msg_context
= lookup_msg_context(instance
, handle
);
467 pr_err("drvbuf.client_context(%u) is invalid\n",
472 pr_err("MMAL_MSG_TYPE_BUFFER_TO_HOST with bad magic\n");
476 msg_context
->u
.bulk
.mmal_flags
=
477 msg
->u
.buffer_from_host
.buffer_header
.flags
;
479 if (msg
->h
.status
!= MMAL_MSG_STATUS_SUCCESS
) {
480 /* message reception had an error */
481 pr_warn("error %d in reply\n", msg
->h
.status
);
483 msg_context
->u
.bulk
.status
= msg
->h
.status
;
485 } else if (msg
->u
.buffer_from_host
.buffer_header
.length
== 0) {
487 if (msg
->u
.buffer_from_host
.buffer_header
.flags
&
488 MMAL_BUFFER_HEADER_FLAG_EOS
) {
489 msg_context
->u
.bulk
.status
=
490 bulk_receive(instance
, msg
, msg_context
);
491 if (msg_context
->u
.bulk
.status
== 0)
492 return; /* successful bulk submission, bulk
493 * completion will trigger callback
496 /* do callback with empty buffer - not EOS though */
497 msg_context
->u
.bulk
.status
= 0;
498 msg_context
->u
.bulk
.buffer_used
= 0;
500 } else if (msg
->u
.buffer_from_host
.payload_in_message
== 0) {
501 /* data is not in message, queue a bulk receive */
502 msg_context
->u
.bulk
.status
=
503 bulk_receive(instance
, msg
, msg_context
);
504 if (msg_context
->u
.bulk
.status
== 0)
505 return; /* successful bulk submission, bulk
506 * completion will trigger callback
509 /* failed to submit buffer, this will end badly */
510 pr_err("error %d on bulk submission\n",
511 msg_context
->u
.bulk
.status
);
513 } else if (msg
->u
.buffer_from_host
.payload_in_message
<=
514 MMAL_VC_SHORT_DATA
) {
515 /* data payload within message */
516 msg_context
->u
.bulk
.status
= inline_receive(instance
, msg
,
519 pr_err("message with invalid short payload\n");
522 msg_context
->u
.bulk
.status
= -EINVAL
;
523 msg_context
->u
.bulk
.buffer_used
=
524 msg
->u
.buffer_from_host
.payload_in_message
;
527 /* schedule the port callback */
528 schedule_work(&msg_context
->u
.bulk
.work
);
531 static void bulk_receive_cb(struct vchiq_mmal_instance
*instance
,
532 struct mmal_msg_context
*msg_context
)
534 msg_context
->u
.bulk
.status
= 0;
536 /* schedule the port callback */
537 schedule_work(&msg_context
->u
.bulk
.work
);
540 static void bulk_abort_cb(struct vchiq_mmal_instance
*instance
,
541 struct mmal_msg_context
*msg_context
)
543 pr_err("%s: bulk ABORTED msg_context:%p\n", __func__
, msg_context
);
545 msg_context
->u
.bulk
.status
= -EINTR
;
547 schedule_work(&msg_context
->u
.bulk
.work
);
550 /* incoming event service callback */
551 static enum vchiq_status
service_callback(enum vchiq_reason reason
,
552 struct vchiq_header
*header
,
553 unsigned int handle
, void *bulk_ctx
)
555 struct vchiq_mmal_instance
*instance
= vchiq_get_service_userdata(handle
);
557 struct mmal_msg
*msg
;
558 struct mmal_msg_context
*msg_context
;
561 pr_err("Message callback passed NULL instance\n");
562 return VCHIQ_SUCCESS
;
566 case VCHIQ_MESSAGE_AVAILABLE
:
567 msg
= (void *)header
->data
;
568 msg_len
= header
->size
;
570 DBG_DUMP_MSG(msg
, msg_len
, "<<< reply message");
572 /* handling is different for buffer messages */
573 switch (msg
->h
.type
) {
574 case MMAL_MSG_TYPE_BUFFER_FROM_HOST
:
575 vchiq_release_message(handle
, header
);
578 case MMAL_MSG_TYPE_EVENT_TO_HOST
:
579 event_to_host_cb(instance
, msg
, msg_len
);
580 vchiq_release_message(handle
, header
);
584 case MMAL_MSG_TYPE_BUFFER_TO_HOST
:
585 buffer_to_host_cb(instance
, msg
, msg_len
);
586 vchiq_release_message(handle
, header
);
590 /* messages dependent on header context to complete */
591 if (!msg
->h
.context
) {
592 pr_err("received message context was null!\n");
593 vchiq_release_message(handle
, header
);
597 msg_context
= lookup_msg_context(instance
,
600 pr_err("received invalid message context %u!\n",
602 vchiq_release_message(handle
, header
);
606 /* fill in context values */
607 msg_context
->u
.sync
.msg_handle
= header
;
608 msg_context
->u
.sync
.msg
= msg
;
609 msg_context
->u
.sync
.msg_len
= msg_len
;
611 /* todo: should this check (completion_done()
612 * == 1) for no one waiting? or do we need a
613 * flag to tell us the completion has been
614 * interrupted so we can free the message and
615 * its context. This probably also solves the
616 * message arriving after interruption todo
620 /* complete message so caller knows it happened */
621 complete(&msg_context
->u
.sync
.cmplt
);
627 case VCHIQ_BULK_RECEIVE_DONE
:
628 bulk_receive_cb(instance
, bulk_ctx
);
631 case VCHIQ_BULK_RECEIVE_ABORTED
:
632 bulk_abort_cb(instance
, bulk_ctx
);
635 case VCHIQ_SERVICE_CLOSED
:
636 /* TODO: consider if this requires action if received when
637 * driver is not explicitly closing the service
642 pr_err("Received unhandled message reason %d\n", reason
);
646 return VCHIQ_SUCCESS
;
649 static int send_synchronous_mmal_msg(struct vchiq_mmal_instance
*instance
,
650 struct mmal_msg
*msg
,
651 unsigned int payload_len
,
652 struct mmal_msg
**msg_out
,
653 struct vchiq_header
**msg_handle
)
655 struct mmal_msg_context
*msg_context
;
657 unsigned long timeout
;
659 /* payload size must not cause message to exceed max size */
661 (MMAL_MSG_MAX_SIZE
- sizeof(struct mmal_msg_header
))) {
662 pr_err("payload length %d exceeds max:%d\n", payload_len
,
663 (int)(MMAL_MSG_MAX_SIZE
-
664 sizeof(struct mmal_msg_header
)));
668 msg_context
= get_msg_context(instance
);
669 if (IS_ERR(msg_context
))
670 return PTR_ERR(msg_context
);
672 init_completion(&msg_context
->u
.sync
.cmplt
);
674 msg
->h
.magic
= MMAL_MAGIC
;
675 msg
->h
.context
= msg_context
->handle
;
678 DBG_DUMP_MSG(msg
, (sizeof(struct mmal_msg_header
) + payload_len
),
681 vchiq_use_service(instance
->service_handle
);
683 ret
= vchiq_queue_kernel_message(instance
->service_handle
, msg
,
684 sizeof(struct mmal_msg_header
) +
687 vchiq_release_service(instance
->service_handle
);
690 pr_err("error %d queuing message\n", ret
);
691 release_msg_context(msg_context
);
695 timeout
= wait_for_completion_timeout(&msg_context
->u
.sync
.cmplt
,
696 SYNC_MSG_TIMEOUT
* HZ
);
698 pr_err("timed out waiting for sync completion\n");
700 /* todo: what happens if the message arrives after aborting */
701 release_msg_context(msg_context
);
705 *msg_out
= msg_context
->u
.sync
.msg
;
706 *msg_handle
= msg_context
->u
.sync
.msg_handle
;
707 release_msg_context(msg_context
);
712 static void dump_port_info(struct vchiq_mmal_port
*port
)
714 pr_debug("port handle:0x%x enabled:%d\n", port
->handle
, port
->enabled
);
716 pr_debug("buffer minimum num:%d size:%d align:%d\n",
717 port
->minimum_buffer
.num
,
718 port
->minimum_buffer
.size
, port
->minimum_buffer
.alignment
);
720 pr_debug("buffer recommended num:%d size:%d align:%d\n",
721 port
->recommended_buffer
.num
,
722 port
->recommended_buffer
.size
,
723 port
->recommended_buffer
.alignment
);
725 pr_debug("buffer current values num:%d size:%d align:%d\n",
726 port
->current_buffer
.num
,
727 port
->current_buffer
.size
, port
->current_buffer
.alignment
);
729 pr_debug("elementary stream: type:%d encoding:0x%x variant:0x%x\n",
731 port
->format
.encoding
, port
->format
.encoding_variant
);
733 pr_debug(" bitrate:%d flags:0x%x\n",
734 port
->format
.bitrate
, port
->format
.flags
);
736 if (port
->format
.type
== MMAL_ES_TYPE_VIDEO
) {
738 ("es video format: width:%d height:%d colourspace:0x%x\n",
739 port
->es
.video
.width
, port
->es
.video
.height
,
740 port
->es
.video
.color_space
);
742 pr_debug(" : crop xywh %d,%d,%d,%d\n",
743 port
->es
.video
.crop
.x
,
744 port
->es
.video
.crop
.y
,
745 port
->es
.video
.crop
.width
, port
->es
.video
.crop
.height
);
746 pr_debug(" : framerate %d/%d aspect %d/%d\n",
747 port
->es
.video
.frame_rate
.num
,
748 port
->es
.video
.frame_rate
.den
,
749 port
->es
.video
.par
.num
, port
->es
.video
.par
.den
);
753 static void port_to_mmal_msg(struct vchiq_mmal_port
*port
, struct mmal_port
*p
)
755 /* todo do readonly fields need setting at all? */
756 p
->type
= port
->type
;
757 p
->index
= port
->index
;
759 p
->is_enabled
= port
->enabled
;
760 p
->buffer_num_min
= port
->minimum_buffer
.num
;
761 p
->buffer_size_min
= port
->minimum_buffer
.size
;
762 p
->buffer_alignment_min
= port
->minimum_buffer
.alignment
;
763 p
->buffer_num_recommended
= port
->recommended_buffer
.num
;
764 p
->buffer_size_recommended
= port
->recommended_buffer
.size
;
766 /* only three writable fields in a port */
767 p
->buffer_num
= port
->current_buffer
.num
;
768 p
->buffer_size
= port
->current_buffer
.size
;
769 p
->userdata
= (u32
)(unsigned long)port
;
772 static int port_info_set(struct vchiq_mmal_instance
*instance
,
773 struct vchiq_mmal_port
*port
)
777 struct mmal_msg
*rmsg
;
778 struct vchiq_header
*rmsg_handle
;
780 pr_debug("setting port info port %p\n", port
);
783 dump_port_info(port
);
785 m
.h
.type
= MMAL_MSG_TYPE_PORT_INFO_SET
;
787 m
.u
.port_info_set
.component_handle
= port
->component
->handle
;
788 m
.u
.port_info_set
.port_type
= port
->type
;
789 m
.u
.port_info_set
.port_index
= port
->index
;
791 port_to_mmal_msg(port
, &m
.u
.port_info_set
.port
);
793 /* elementary stream format setup */
794 m
.u
.port_info_set
.format
.type
= port
->format
.type
;
795 m
.u
.port_info_set
.format
.encoding
= port
->format
.encoding
;
796 m
.u
.port_info_set
.format
.encoding_variant
=
797 port
->format
.encoding_variant
;
798 m
.u
.port_info_set
.format
.bitrate
= port
->format
.bitrate
;
799 m
.u
.port_info_set
.format
.flags
= port
->format
.flags
;
801 memcpy(&m
.u
.port_info_set
.es
, &port
->es
,
802 sizeof(union mmal_es_specific_format
));
804 m
.u
.port_info_set
.format
.extradata_size
= port
->format
.extradata_size
;
805 memcpy(&m
.u
.port_info_set
.extradata
, port
->format
.extradata
,
806 port
->format
.extradata_size
);
808 ret
= send_synchronous_mmal_msg(instance
, &m
,
809 sizeof(m
.u
.port_info_set
),
810 &rmsg
, &rmsg_handle
);
814 if (rmsg
->h
.type
!= MMAL_MSG_TYPE_PORT_INFO_SET
) {
815 /* got an unexpected message type in reply */
820 /* return operation status */
821 ret
= -rmsg
->u
.port_info_get_reply
.status
;
823 pr_debug("%s:result:%d component:0x%x port:%d\n", __func__
, ret
,
824 port
->component
->handle
, port
->handle
);
827 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
832 /* use port info get message to retrieve port information */
833 static int port_info_get(struct vchiq_mmal_instance
*instance
,
834 struct vchiq_mmal_port
*port
)
838 struct mmal_msg
*rmsg
;
839 struct vchiq_header
*rmsg_handle
;
842 m
.h
.type
= MMAL_MSG_TYPE_PORT_INFO_GET
;
843 m
.u
.port_info_get
.component_handle
= port
->component
->handle
;
844 m
.u
.port_info_get
.port_type
= port
->type
;
845 m
.u
.port_info_get
.index
= port
->index
;
847 ret
= send_synchronous_mmal_msg(instance
, &m
,
848 sizeof(m
.u
.port_info_get
),
849 &rmsg
, &rmsg_handle
);
853 if (rmsg
->h
.type
!= MMAL_MSG_TYPE_PORT_INFO_GET
) {
854 /* got an unexpected message type in reply */
859 /* return operation status */
860 ret
= -rmsg
->u
.port_info_get_reply
.status
;
861 if (ret
!= MMAL_MSG_STATUS_SUCCESS
)
864 if (rmsg
->u
.port_info_get_reply
.port
.is_enabled
== 0)
869 /* copy the values out of the message */
870 port
->handle
= rmsg
->u
.port_info_get_reply
.port_handle
;
872 /* port type and index cached to use on port info set because
873 * it does not use a port handle
875 port
->type
= rmsg
->u
.port_info_get_reply
.port_type
;
876 port
->index
= rmsg
->u
.port_info_get_reply
.port_index
;
878 port
->minimum_buffer
.num
=
879 rmsg
->u
.port_info_get_reply
.port
.buffer_num_min
;
880 port
->minimum_buffer
.size
=
881 rmsg
->u
.port_info_get_reply
.port
.buffer_size_min
;
882 port
->minimum_buffer
.alignment
=
883 rmsg
->u
.port_info_get_reply
.port
.buffer_alignment_min
;
885 port
->recommended_buffer
.alignment
=
886 rmsg
->u
.port_info_get_reply
.port
.buffer_alignment_min
;
887 port
->recommended_buffer
.num
=
888 rmsg
->u
.port_info_get_reply
.port
.buffer_num_recommended
;
890 port
->current_buffer
.num
= rmsg
->u
.port_info_get_reply
.port
.buffer_num
;
891 port
->current_buffer
.size
=
892 rmsg
->u
.port_info_get_reply
.port
.buffer_size
;
895 port
->format
.type
= rmsg
->u
.port_info_get_reply
.format
.type
;
896 port
->format
.encoding
= rmsg
->u
.port_info_get_reply
.format
.encoding
;
897 port
->format
.encoding_variant
=
898 rmsg
->u
.port_info_get_reply
.format
.encoding_variant
;
899 port
->format
.bitrate
= rmsg
->u
.port_info_get_reply
.format
.bitrate
;
900 port
->format
.flags
= rmsg
->u
.port_info_get_reply
.format
.flags
;
902 /* elementary stream format */
904 &rmsg
->u
.port_info_get_reply
.es
,
905 sizeof(union mmal_es_specific_format
));
906 port
->format
.es
= &port
->es
;
908 port
->format
.extradata_size
=
909 rmsg
->u
.port_info_get_reply
.format
.extradata_size
;
910 memcpy(port
->format
.extradata
,
911 rmsg
->u
.port_info_get_reply
.extradata
,
912 port
->format
.extradata_size
);
914 pr_debug("received port info\n");
915 dump_port_info(port
);
919 pr_debug("%s:result:%d component:0x%x port:%d\n",
920 __func__
, ret
, port
->component
->handle
, port
->handle
);
922 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
927 /* create comonent on vc */
928 static int create_component(struct vchiq_mmal_instance
*instance
,
929 struct vchiq_mmal_component
*component
,
934 struct mmal_msg
*rmsg
;
935 struct vchiq_header
*rmsg_handle
;
937 /* build component create message */
938 m
.h
.type
= MMAL_MSG_TYPE_COMPONENT_CREATE
;
939 m
.u
.component_create
.client_component
= component
->client_component
;
940 strncpy(m
.u
.component_create
.name
, name
,
941 sizeof(m
.u
.component_create
.name
));
943 ret
= send_synchronous_mmal_msg(instance
, &m
,
944 sizeof(m
.u
.component_create
),
945 &rmsg
, &rmsg_handle
);
949 if (rmsg
->h
.type
!= m
.h
.type
) {
950 /* got an unexpected message type in reply */
955 ret
= -rmsg
->u
.component_create_reply
.status
;
956 if (ret
!= MMAL_MSG_STATUS_SUCCESS
)
959 /* a valid component response received */
960 component
->handle
= rmsg
->u
.component_create_reply
.component_handle
;
961 component
->inputs
= rmsg
->u
.component_create_reply
.input_num
;
962 component
->outputs
= rmsg
->u
.component_create_reply
.output_num
;
963 component
->clocks
= rmsg
->u
.component_create_reply
.clock_num
;
965 pr_debug("Component handle:0x%x in:%d out:%d clock:%d\n",
967 component
->inputs
, component
->outputs
, component
->clocks
);
970 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
975 /* destroys a component on vc */
976 static int destroy_component(struct vchiq_mmal_instance
*instance
,
977 struct vchiq_mmal_component
*component
)
981 struct mmal_msg
*rmsg
;
982 struct vchiq_header
*rmsg_handle
;
984 m
.h
.type
= MMAL_MSG_TYPE_COMPONENT_DESTROY
;
985 m
.u
.component_destroy
.component_handle
= component
->handle
;
987 ret
= send_synchronous_mmal_msg(instance
, &m
,
988 sizeof(m
.u
.component_destroy
),
989 &rmsg
, &rmsg_handle
);
993 if (rmsg
->h
.type
!= m
.h
.type
) {
994 /* got an unexpected message type in reply */
999 ret
= -rmsg
->u
.component_destroy_reply
.status
;
1003 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1008 /* enable a component on vc */
1009 static int enable_component(struct vchiq_mmal_instance
*instance
,
1010 struct vchiq_mmal_component
*component
)
1014 struct mmal_msg
*rmsg
;
1015 struct vchiq_header
*rmsg_handle
;
1017 m
.h
.type
= MMAL_MSG_TYPE_COMPONENT_ENABLE
;
1018 m
.u
.component_enable
.component_handle
= component
->handle
;
1020 ret
= send_synchronous_mmal_msg(instance
, &m
,
1021 sizeof(m
.u
.component_enable
),
1022 &rmsg
, &rmsg_handle
);
1026 if (rmsg
->h
.type
!= m
.h
.type
) {
1027 /* got an unexpected message type in reply */
1032 ret
= -rmsg
->u
.component_enable_reply
.status
;
1035 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1040 /* disable a component on vc */
1041 static int disable_component(struct vchiq_mmal_instance
*instance
,
1042 struct vchiq_mmal_component
*component
)
1046 struct mmal_msg
*rmsg
;
1047 struct vchiq_header
*rmsg_handle
;
1049 m
.h
.type
= MMAL_MSG_TYPE_COMPONENT_DISABLE
;
1050 m
.u
.component_disable
.component_handle
= component
->handle
;
1052 ret
= send_synchronous_mmal_msg(instance
, &m
,
1053 sizeof(m
.u
.component_disable
),
1054 &rmsg
, &rmsg_handle
);
1058 if (rmsg
->h
.type
!= m
.h
.type
) {
1059 /* got an unexpected message type in reply */
1064 ret
= -rmsg
->u
.component_disable_reply
.status
;
1068 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1073 /* get version of mmal implementation */
1074 static int get_version(struct vchiq_mmal_instance
*instance
,
1075 u32
*major_out
, u32
*minor_out
)
1079 struct mmal_msg
*rmsg
;
1080 struct vchiq_header
*rmsg_handle
;
1082 m
.h
.type
= MMAL_MSG_TYPE_GET_VERSION
;
1084 ret
= send_synchronous_mmal_msg(instance
, &m
,
1085 sizeof(m
.u
.version
),
1086 &rmsg
, &rmsg_handle
);
1090 if (rmsg
->h
.type
!= m
.h
.type
) {
1091 /* got an unexpected message type in reply */
1096 *major_out
= rmsg
->u
.version
.major
;
1097 *minor_out
= rmsg
->u
.version
.minor
;
1100 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1105 /* do a port action with a port as a parameter */
1106 static int port_action_port(struct vchiq_mmal_instance
*instance
,
1107 struct vchiq_mmal_port
*port
,
1108 enum mmal_msg_port_action_type action_type
)
1112 struct mmal_msg
*rmsg
;
1113 struct vchiq_header
*rmsg_handle
;
1115 m
.h
.type
= MMAL_MSG_TYPE_PORT_ACTION
;
1116 m
.u
.port_action_port
.component_handle
= port
->component
->handle
;
1117 m
.u
.port_action_port
.port_handle
= port
->handle
;
1118 m
.u
.port_action_port
.action
= action_type
;
1120 port_to_mmal_msg(port
, &m
.u
.port_action_port
.port
);
1122 ret
= send_synchronous_mmal_msg(instance
, &m
,
1123 sizeof(m
.u
.port_action_port
),
1124 &rmsg
, &rmsg_handle
);
1128 if (rmsg
->h
.type
!= MMAL_MSG_TYPE_PORT_ACTION
) {
1129 /* got an unexpected message type in reply */
1134 ret
= -rmsg
->u
.port_action_reply
.status
;
1136 pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d)\n",
1138 ret
, port
->component
->handle
, port
->handle
,
1139 port_action_type_names
[action_type
], action_type
);
1142 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1147 /* do a port action with handles as parameters */
1148 static int port_action_handle(struct vchiq_mmal_instance
*instance
,
1149 struct vchiq_mmal_port
*port
,
1150 enum mmal_msg_port_action_type action_type
,
1151 u32 connect_component_handle
,
1152 u32 connect_port_handle
)
1156 struct mmal_msg
*rmsg
;
1157 struct vchiq_header
*rmsg_handle
;
1159 m
.h
.type
= MMAL_MSG_TYPE_PORT_ACTION
;
1161 m
.u
.port_action_handle
.component_handle
= port
->component
->handle
;
1162 m
.u
.port_action_handle
.port_handle
= port
->handle
;
1163 m
.u
.port_action_handle
.action
= action_type
;
1165 m
.u
.port_action_handle
.connect_component_handle
=
1166 connect_component_handle
;
1167 m
.u
.port_action_handle
.connect_port_handle
= connect_port_handle
;
1169 ret
= send_synchronous_mmal_msg(instance
, &m
,
1170 sizeof(m
.u
.port_action_handle
),
1171 &rmsg
, &rmsg_handle
);
1175 if (rmsg
->h
.type
!= MMAL_MSG_TYPE_PORT_ACTION
) {
1176 /* got an unexpected message type in reply */
1181 ret
= -rmsg
->u
.port_action_reply
.status
;
1183 pr_debug("%s:result:%d component:0x%x port:%d action:%s(%d) connect component:0x%x connect port:%d\n",
1185 ret
, port
->component
->handle
, port
->handle
,
1186 port_action_type_names
[action_type
],
1187 action_type
, connect_component_handle
, connect_port_handle
);
1190 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1195 static int port_parameter_set(struct vchiq_mmal_instance
*instance
,
1196 struct vchiq_mmal_port
*port
,
1197 u32 parameter_id
, void *value
, u32 value_size
)
1201 struct mmal_msg
*rmsg
;
1202 struct vchiq_header
*rmsg_handle
;
1204 m
.h
.type
= MMAL_MSG_TYPE_PORT_PARAMETER_SET
;
1206 m
.u
.port_parameter_set
.component_handle
= port
->component
->handle
;
1207 m
.u
.port_parameter_set
.port_handle
= port
->handle
;
1208 m
.u
.port_parameter_set
.id
= parameter_id
;
1209 m
.u
.port_parameter_set
.size
= (2 * sizeof(u32
)) + value_size
;
1210 memcpy(&m
.u
.port_parameter_set
.value
, value
, value_size
);
1212 ret
= send_synchronous_mmal_msg(instance
, &m
,
1213 (4 * sizeof(u32
)) + value_size
,
1214 &rmsg
, &rmsg_handle
);
1218 if (rmsg
->h
.type
!= MMAL_MSG_TYPE_PORT_PARAMETER_SET
) {
1219 /* got an unexpected message type in reply */
1224 ret
= -rmsg
->u
.port_parameter_set_reply
.status
;
1226 pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n",
1228 ret
, port
->component
->handle
, port
->handle
, parameter_id
);
1231 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1236 static int port_parameter_get(struct vchiq_mmal_instance
*instance
,
1237 struct vchiq_mmal_port
*port
,
1238 u32 parameter_id
, void *value
, u32
*value_size
)
1242 struct mmal_msg
*rmsg
;
1243 struct vchiq_header
*rmsg_handle
;
1245 m
.h
.type
= MMAL_MSG_TYPE_PORT_PARAMETER_GET
;
1247 m
.u
.port_parameter_get
.component_handle
= port
->component
->handle
;
1248 m
.u
.port_parameter_get
.port_handle
= port
->handle
;
1249 m
.u
.port_parameter_get
.id
= parameter_id
;
1250 m
.u
.port_parameter_get
.size
= (2 * sizeof(u32
)) + *value_size
;
1252 ret
= send_synchronous_mmal_msg(instance
, &m
,
1254 mmal_msg_port_parameter_get
),
1255 &rmsg
, &rmsg_handle
);
1259 if (rmsg
->h
.type
!= MMAL_MSG_TYPE_PORT_PARAMETER_GET
) {
1260 /* got an unexpected message type in reply */
1261 pr_err("Incorrect reply type %d\n", rmsg
->h
.type
);
1266 ret
= rmsg
->u
.port_parameter_get_reply
.status
;
1268 /* port_parameter_get_reply.size includes the header,
1269 * whilst *value_size doesn't.
1271 rmsg
->u
.port_parameter_get_reply
.size
-= (2 * sizeof(u32
));
1273 if (ret
|| rmsg
->u
.port_parameter_get_reply
.size
> *value_size
) {
1274 /* Copy only as much as we have space for
1275 * but report true size of parameter
1277 memcpy(value
, &rmsg
->u
.port_parameter_get_reply
.value
,
1280 memcpy(value
, &rmsg
->u
.port_parameter_get_reply
.value
,
1281 rmsg
->u
.port_parameter_get_reply
.size
);
1283 /* Always report the size of the returned parameter to the caller */
1284 *value_size
= rmsg
->u
.port_parameter_get_reply
.size
;
1286 pr_debug("%s:result:%d component:0x%x port:%d parameter:%d\n", __func__
,
1287 ret
, port
->component
->handle
, port
->handle
, parameter_id
);
1290 vchiq_release_message(instance
->service_handle
, rmsg_handle
);
1295 /* disables a port and drains buffers from it */
1296 static int port_disable(struct vchiq_mmal_instance
*instance
,
1297 struct vchiq_mmal_port
*port
)
1300 struct list_head
*q
, *buf_head
;
1301 unsigned long flags
= 0;
1308 ret
= port_action_port(instance
, port
,
1309 MMAL_MSG_PORT_ACTION_TYPE_DISABLE
);
1312 * Drain all queued buffers on port. This should only
1313 * apply to buffers that have been queued before the port
1314 * has been enabled. If the port has been enabled and buffers
1315 * passed, then the buffers should have been removed from this
1316 * list, and we should get the relevant callbacks via VCHIQ
1317 * to release the buffers.
1319 spin_lock_irqsave(&port
->slock
, flags
);
1321 list_for_each_safe(buf_head
, q
, &port
->buffers
) {
1322 struct mmal_buffer
*mmalbuf
;
1324 mmalbuf
= list_entry(buf_head
, struct mmal_buffer
,
1327 if (port
->buffer_cb
) {
1328 mmalbuf
->length
= 0;
1329 mmalbuf
->mmal_flags
= 0;
1330 mmalbuf
->dts
= MMAL_TIME_UNKNOWN
;
1331 mmalbuf
->pts
= MMAL_TIME_UNKNOWN
;
1332 port
->buffer_cb(instance
,
1337 spin_unlock_irqrestore(&port
->slock
, flags
);
1339 ret
= port_info_get(instance
, port
);
1346 static int port_enable(struct vchiq_mmal_instance
*instance
,
1347 struct vchiq_mmal_port
*port
)
1349 unsigned int hdr_count
;
1350 struct list_head
*q
, *buf_head
;
1356 ret
= port_action_port(instance
, port
,
1357 MMAL_MSG_PORT_ACTION_TYPE_ENABLE
);
1363 if (port
->buffer_cb
) {
1364 /* send buffer headers to videocore */
1366 list_for_each_safe(buf_head
, q
, &port
->buffers
) {
1367 struct mmal_buffer
*mmalbuf
;
1369 mmalbuf
= list_entry(buf_head
, struct mmal_buffer
,
1371 ret
= buffer_from_host(instance
, port
, mmalbuf
);
1377 if (hdr_count
> port
->current_buffer
.num
)
1382 ret
= port_info_get(instance
, port
);
1388 /* ------------------------------------------------------------------
1390 *------------------------------------------------------------------
1393 int vchiq_mmal_port_set_format(struct vchiq_mmal_instance
*instance
,
1394 struct vchiq_mmal_port
*port
)
1398 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1401 ret
= port_info_set(instance
, port
);
1403 goto release_unlock
;
1405 /* read what has actually been set */
1406 ret
= port_info_get(instance
, port
);
1409 mutex_unlock(&instance
->vchiq_mutex
);
1413 EXPORT_SYMBOL_GPL(vchiq_mmal_port_set_format
);
1415 int vchiq_mmal_port_parameter_set(struct vchiq_mmal_instance
*instance
,
1416 struct vchiq_mmal_port
*port
,
1417 u32 parameter
, void *value
, u32 value_size
)
1421 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1424 ret
= port_parameter_set(instance
, port
, parameter
, value
, value_size
);
1426 mutex_unlock(&instance
->vchiq_mutex
);
1430 EXPORT_SYMBOL_GPL(vchiq_mmal_port_parameter_set
);
1432 int vchiq_mmal_port_parameter_get(struct vchiq_mmal_instance
*instance
,
1433 struct vchiq_mmal_port
*port
,
1434 u32 parameter
, void *value
, u32
*value_size
)
1438 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1441 ret
= port_parameter_get(instance
, port
, parameter
, value
, value_size
);
1443 mutex_unlock(&instance
->vchiq_mutex
);
1447 EXPORT_SYMBOL_GPL(vchiq_mmal_port_parameter_get
);
1451 * enables a port and queues buffers for satisfying callbacks if we
1452 * provide a callback handler
1454 int vchiq_mmal_port_enable(struct vchiq_mmal_instance
*instance
,
1455 struct vchiq_mmal_port
*port
,
1456 vchiq_mmal_buffer_cb buffer_cb
)
1460 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1463 /* already enabled - noop */
1464 if (port
->enabled
) {
1469 port
->buffer_cb
= buffer_cb
;
1471 ret
= port_enable(instance
, port
);
1474 mutex_unlock(&instance
->vchiq_mutex
);
1478 EXPORT_SYMBOL_GPL(vchiq_mmal_port_enable
);
1480 int vchiq_mmal_port_disable(struct vchiq_mmal_instance
*instance
,
1481 struct vchiq_mmal_port
*port
)
1485 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1488 if (!port
->enabled
) {
1489 mutex_unlock(&instance
->vchiq_mutex
);
1493 ret
= port_disable(instance
, port
);
1495 mutex_unlock(&instance
->vchiq_mutex
);
1499 EXPORT_SYMBOL_GPL(vchiq_mmal_port_disable
);
1501 /* ports will be connected in a tunneled manner so data buffers
1502 * are not handled by client.
1504 int vchiq_mmal_port_connect_tunnel(struct vchiq_mmal_instance
*instance
,
1505 struct vchiq_mmal_port
*src
,
1506 struct vchiq_mmal_port
*dst
)
1510 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1513 /* disconnect ports if connected */
1514 if (src
->connected
) {
1515 ret
= port_disable(instance
, src
);
1517 pr_err("failed disabling src port(%d)\n", ret
);
1518 goto release_unlock
;
1521 /* do not need to disable the destination port as they
1522 * are connected and it is done automatically
1525 ret
= port_action_handle(instance
, src
,
1526 MMAL_MSG_PORT_ACTION_TYPE_DISCONNECT
,
1527 src
->connected
->component
->handle
,
1528 src
->connected
->handle
);
1530 pr_err("failed disconnecting src port\n");
1531 goto release_unlock
;
1533 src
->connected
->enabled
= 0;
1534 src
->connected
= NULL
;
1538 /* do not make new connection */
1540 pr_debug("not making new connection\n");
1541 goto release_unlock
;
1544 /* copy src port format to dst */
1545 dst
->format
.encoding
= src
->format
.encoding
;
1546 dst
->es
.video
.width
= src
->es
.video
.width
;
1547 dst
->es
.video
.height
= src
->es
.video
.height
;
1548 dst
->es
.video
.crop
.x
= src
->es
.video
.crop
.x
;
1549 dst
->es
.video
.crop
.y
= src
->es
.video
.crop
.y
;
1550 dst
->es
.video
.crop
.width
= src
->es
.video
.crop
.width
;
1551 dst
->es
.video
.crop
.height
= src
->es
.video
.crop
.height
;
1552 dst
->es
.video
.frame_rate
.num
= src
->es
.video
.frame_rate
.num
;
1553 dst
->es
.video
.frame_rate
.den
= src
->es
.video
.frame_rate
.den
;
1555 /* set new format */
1556 ret
= port_info_set(instance
, dst
);
1558 pr_debug("setting port info failed\n");
1559 goto release_unlock
;
1562 /* read what has actually been set */
1563 ret
= port_info_get(instance
, dst
);
1565 pr_debug("read back port info failed\n");
1566 goto release_unlock
;
1569 /* connect two ports together */
1570 ret
= port_action_handle(instance
, src
,
1571 MMAL_MSG_PORT_ACTION_TYPE_CONNECT
,
1572 dst
->component
->handle
, dst
->handle
);
1574 pr_debug("connecting port %d:%d to %d:%d failed\n",
1575 src
->component
->handle
, src
->handle
,
1576 dst
->component
->handle
, dst
->handle
);
1577 goto release_unlock
;
1579 src
->connected
= dst
;
1583 mutex_unlock(&instance
->vchiq_mutex
);
1587 EXPORT_SYMBOL_GPL(vchiq_mmal_port_connect_tunnel
);
1589 int vchiq_mmal_submit_buffer(struct vchiq_mmal_instance
*instance
,
1590 struct vchiq_mmal_port
*port
,
1591 struct mmal_buffer
*buffer
)
1593 unsigned long flags
= 0;
1596 ret
= buffer_from_host(instance
, port
, buffer
);
1597 if (ret
== -EINVAL
) {
1598 /* Port is disabled. Queue for when it is enabled. */
1599 spin_lock_irqsave(&port
->slock
, flags
);
1600 list_add_tail(&buffer
->list
, &port
->buffers
);
1601 spin_unlock_irqrestore(&port
->slock
, flags
);
1606 EXPORT_SYMBOL_GPL(vchiq_mmal_submit_buffer
);
1608 int mmal_vchi_buffer_init(struct vchiq_mmal_instance
*instance
,
1609 struct mmal_buffer
*buf
)
1611 struct mmal_msg_context
*msg_context
= get_msg_context(instance
);
1613 if (IS_ERR(msg_context
))
1614 return (PTR_ERR(msg_context
));
1616 buf
->msg_context
= msg_context
;
1619 EXPORT_SYMBOL_GPL(mmal_vchi_buffer_init
);
1621 int mmal_vchi_buffer_cleanup(struct mmal_buffer
*buf
)
1623 struct mmal_msg_context
*msg_context
= buf
->msg_context
;
1626 release_msg_context(msg_context
);
1627 buf
->msg_context
= NULL
;
1631 EXPORT_SYMBOL_GPL(mmal_vchi_buffer_cleanup
);
1633 /* Initialise a mmal component and its ports
1636 int vchiq_mmal_component_init(struct vchiq_mmal_instance
*instance
,
1638 struct vchiq_mmal_component
**component_out
)
1641 int idx
; /* port index */
1642 struct vchiq_mmal_component
*component
= NULL
;
1644 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1647 for (idx
= 0; idx
< VCHIQ_MMAL_MAX_COMPONENTS
; idx
++) {
1648 if (!instance
->component
[idx
].in_use
) {
1649 component
= &instance
->component
[idx
];
1650 component
->in_use
= 1;
1656 ret
= -EINVAL
; /* todo is this correct error? */
1660 /* We need a handle to reference back to our component structure.
1661 * Use the array index in instance->component rather than rolling
1664 component
->client_component
= idx
;
1666 ret
= create_component(instance
, component
, name
);
1668 pr_err("%s: failed to create component %d (Not enough GPU mem?)\n",
1673 /* ports info needs gathering */
1674 component
->control
.type
= MMAL_PORT_TYPE_CONTROL
;
1675 component
->control
.index
= 0;
1676 component
->control
.component
= component
;
1677 spin_lock_init(&component
->control
.slock
);
1678 INIT_LIST_HEAD(&component
->control
.buffers
);
1679 ret
= port_info_get(instance
, &component
->control
);
1681 goto release_component
;
1683 for (idx
= 0; idx
< component
->inputs
; idx
++) {
1684 component
->input
[idx
].type
= MMAL_PORT_TYPE_INPUT
;
1685 component
->input
[idx
].index
= idx
;
1686 component
->input
[idx
].component
= component
;
1687 spin_lock_init(&component
->input
[idx
].slock
);
1688 INIT_LIST_HEAD(&component
->input
[idx
].buffers
);
1689 ret
= port_info_get(instance
, &component
->input
[idx
]);
1691 goto release_component
;
1694 for (idx
= 0; idx
< component
->outputs
; idx
++) {
1695 component
->output
[idx
].type
= MMAL_PORT_TYPE_OUTPUT
;
1696 component
->output
[idx
].index
= idx
;
1697 component
->output
[idx
].component
= component
;
1698 spin_lock_init(&component
->output
[idx
].slock
);
1699 INIT_LIST_HEAD(&component
->output
[idx
].buffers
);
1700 ret
= port_info_get(instance
, &component
->output
[idx
]);
1702 goto release_component
;
1705 for (idx
= 0; idx
< component
->clocks
; idx
++) {
1706 component
->clock
[idx
].type
= MMAL_PORT_TYPE_CLOCK
;
1707 component
->clock
[idx
].index
= idx
;
1708 component
->clock
[idx
].component
= component
;
1709 spin_lock_init(&component
->clock
[idx
].slock
);
1710 INIT_LIST_HEAD(&component
->clock
[idx
].buffers
);
1711 ret
= port_info_get(instance
, &component
->clock
[idx
]);
1713 goto release_component
;
1716 *component_out
= component
;
1718 mutex_unlock(&instance
->vchiq_mutex
);
1723 destroy_component(instance
, component
);
1726 component
->in_use
= 0;
1727 mutex_unlock(&instance
->vchiq_mutex
);
1731 EXPORT_SYMBOL_GPL(vchiq_mmal_component_init
);
1734 * cause a mmal component to be destroyed
1736 int vchiq_mmal_component_finalise(struct vchiq_mmal_instance
*instance
,
1737 struct vchiq_mmal_component
*component
)
1741 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1744 if (component
->enabled
)
1745 ret
= disable_component(instance
, component
);
1747 ret
= destroy_component(instance
, component
);
1749 component
->in_use
= 0;
1751 mutex_unlock(&instance
->vchiq_mutex
);
1755 EXPORT_SYMBOL_GPL(vchiq_mmal_component_finalise
);
1758 * cause a mmal component to be enabled
1760 int vchiq_mmal_component_enable(struct vchiq_mmal_instance
*instance
,
1761 struct vchiq_mmal_component
*component
)
1765 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1768 if (component
->enabled
) {
1769 mutex_unlock(&instance
->vchiq_mutex
);
1773 ret
= enable_component(instance
, component
);
1775 component
->enabled
= true;
1777 mutex_unlock(&instance
->vchiq_mutex
);
1781 EXPORT_SYMBOL_GPL(vchiq_mmal_component_enable
);
1784 * cause a mmal component to be enabled
1786 int vchiq_mmal_component_disable(struct vchiq_mmal_instance
*instance
,
1787 struct vchiq_mmal_component
*component
)
1791 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1794 if (!component
->enabled
) {
1795 mutex_unlock(&instance
->vchiq_mutex
);
1799 ret
= disable_component(instance
, component
);
1801 component
->enabled
= 0;
1803 mutex_unlock(&instance
->vchiq_mutex
);
1807 EXPORT_SYMBOL_GPL(vchiq_mmal_component_disable
);
1809 int vchiq_mmal_version(struct vchiq_mmal_instance
*instance
,
1810 u32
*major_out
, u32
*minor_out
)
1814 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1817 ret
= get_version(instance
, major_out
, minor_out
);
1819 mutex_unlock(&instance
->vchiq_mutex
);
1823 EXPORT_SYMBOL_GPL(vchiq_mmal_version
);
1825 int vchiq_mmal_finalise(struct vchiq_mmal_instance
*instance
)
1832 if (mutex_lock_interruptible(&instance
->vchiq_mutex
))
1835 vchiq_use_service(instance
->service_handle
);
1837 status
= vchiq_close_service(instance
->service_handle
);
1839 pr_err("mmal-vchiq: VCHIQ close failed\n");
1841 mutex_unlock(&instance
->vchiq_mutex
);
1843 flush_workqueue(instance
->bulk_wq
);
1844 destroy_workqueue(instance
->bulk_wq
);
1846 vfree(instance
->bulk_scratch
);
1848 idr_destroy(&instance
->context_map
);
1854 EXPORT_SYMBOL_GPL(vchiq_mmal_finalise
);
1856 int vchiq_mmal_init(struct vchiq_mmal_instance
**out_instance
)
1859 struct vchiq_mmal_instance
*instance
;
1860 static struct vchiq_instance
*vchiq_instance
;
1861 struct vchiq_service_params params
= {
1862 .version
= VC_MMAL_VER
,
1863 .version_min
= VC_MMAL_MIN_VER
,
1864 .fourcc
= VCHIQ_MAKE_FOURCC('m', 'm', 'a', 'l'),
1865 .callback
= service_callback
,
1869 /* compile time checks to ensure structure size as they are
1870 * directly (de)serialised from memory.
1873 /* ensure the header structure has packed to the correct size */
1874 BUILD_BUG_ON(sizeof(struct mmal_msg_header
) != 24);
1876 /* ensure message structure does not exceed maximum length */
1877 BUILD_BUG_ON(sizeof(struct mmal_msg
) > MMAL_MSG_MAX_SIZE
);
1879 /* mmal port struct is correct size */
1880 BUILD_BUG_ON(sizeof(struct mmal_port
) != 64);
1882 /* create a vchi instance */
1883 status
= vchiq_initialise(&vchiq_instance
);
1885 pr_err("Failed to initialise VCHI instance (status=%d)\n",
1890 status
= vchiq_connect(vchiq_instance
);
1892 pr_err("Failed to connect VCHI instance (status=%d)\n", status
);
1896 instance
= kzalloc(sizeof(*instance
), GFP_KERNEL
);
1901 mutex_init(&instance
->vchiq_mutex
);
1903 instance
->bulk_scratch
= vmalloc(PAGE_SIZE
);
1905 mutex_init(&instance
->context_map_lock
);
1906 idr_init_base(&instance
->context_map
, 1);
1908 params
.userdata
= instance
;
1910 instance
->bulk_wq
= alloc_ordered_workqueue("mmal-vchiq",
1912 if (!instance
->bulk_wq
)
1915 status
= vchiq_open_service(vchiq_instance
, ¶ms
,
1916 &instance
->service_handle
);
1918 pr_err("Failed to open VCHI service connection (status=%d)\n",
1920 goto err_close_services
;
1923 vchiq_release_service(instance
->service_handle
);
1925 *out_instance
= instance
;
1930 vchiq_close_service(instance
->service_handle
);
1931 destroy_workqueue(instance
->bulk_wq
);
1933 vfree(instance
->bulk_scratch
);
1937 EXPORT_SYMBOL_GPL(vchiq_mmal_init
);
1939 MODULE_DESCRIPTION("BCM2835 MMAL VCHIQ interface");
1940 MODULE_AUTHOR("Dave Stevenson, <dave.stevenson@raspberrypi.org>");
1941 MODULE_LICENSE("GPL");