2 * dmxdev.c - DVB demultiplexer device
4 * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
5 * for convergence integrated media GmbH
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public License
9 * as published by the Free Software Foundation; either version 2.1
10 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
19 #define pr_fmt(fmt) "dmxdev: " fmt
21 #include <linux/sched.h>
22 #include <linux/spinlock.h>
23 #include <linux/slab.h>
24 #include <linux/vmalloc.h>
25 #include <linux/module.h>
26 #include <linux/poll.h>
27 #include <linux/ioctl.h>
28 #include <linux/wait.h>
29 #include <linux/uaccess.h>
34 module_param(debug, int, 0644);
35 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
37 #define dprintk(fmt, arg...) do { \
39 printk(KERN_DEBUG pr_fmt("%s: " fmt), \
43 static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf,
44 const u8 *src, size_t len)
53 free = dvb_ringbuffer_free(buf);
55 dprintk("buffer overflow\n");
59 return dvb_ringbuffer_write(buf, src, len);
62 static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src,
63 int non_blocking, char __user *buf,
64 size_t count, loff_t *ppos)
75 dvb_ringbuffer_flush(src);
79 for (todo = count; todo > 0; todo -= ret) {
80 if (non_blocking && dvb_ringbuffer_empty(src)) {
85 ret = wait_event_interruptible(src->queue,
86 !dvb_ringbuffer_empty(src) ||
93 dvb_ringbuffer_flush(src);
97 avail = dvb_ringbuffer_avail(src);
101 ret = dvb_ringbuffer_read_user(src, buf, avail);
108 return (count - todo) ? (count - todo) : ret;
111 static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type)
113 struct list_head *head, *pos;
115 head = demux->get_frontends(demux);
118 list_for_each(pos, head)
119 if (DMX_FE_ENTRY(pos)->source == type)
120 return DMX_FE_ENTRY(pos);
125 static int dvb_dvr_open(struct inode *inode, struct file *file)
127 struct dvb_device *dvbdev = file->private_data;
128 struct dmxdev *dmxdev = dvbdev->priv;
129 struct dmx_frontend *front;
131 dprintk("%s\n", __func__);
133 if (mutex_lock_interruptible(&dmxdev->mutex))
137 mutex_unlock(&dmxdev->mutex);
141 if ((file->f_flags & O_ACCMODE) == O_RDWR) {
142 if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) {
143 mutex_unlock(&dmxdev->mutex);
148 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
151 if (!dvbdev->readers) {
152 mutex_unlock(&dmxdev->mutex);
155 mem = vmalloc(DVR_BUFFER_SIZE);
157 mutex_unlock(&dmxdev->mutex);
160 dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
164 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
165 dmxdev->dvr_orig_fe = dmxdev->demux->frontend;
167 if (!dmxdev->demux->write) {
168 mutex_unlock(&dmxdev->mutex);
172 front = get_fe(dmxdev->demux, DMX_MEMORY_FE);
175 mutex_unlock(&dmxdev->mutex);
178 dmxdev->demux->disconnect_frontend(dmxdev->demux);
179 dmxdev->demux->connect_frontend(dmxdev->demux, front);
182 mutex_unlock(&dmxdev->mutex);
186 static int dvb_dvr_release(struct inode *inode, struct file *file)
188 struct dvb_device *dvbdev = file->private_data;
189 struct dmxdev *dmxdev = dvbdev->priv;
191 mutex_lock(&dmxdev->mutex);
193 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
194 dmxdev->demux->disconnect_frontend(dmxdev->demux);
195 dmxdev->demux->connect_frontend(dmxdev->demux,
196 dmxdev->dvr_orig_fe);
198 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
200 if (dmxdev->dvr_buffer.data) {
201 void *mem = dmxdev->dvr_buffer.data;
204 spin_lock_irq(&dmxdev->lock);
205 dmxdev->dvr_buffer.data = NULL;
206 spin_unlock_irq(&dmxdev->lock);
212 if (dvbdev->users == 1 && dmxdev->exit == 1) {
213 mutex_unlock(&dmxdev->mutex);
214 wake_up(&dvbdev->wait_queue);
216 mutex_unlock(&dmxdev->mutex);
221 static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
222 size_t count, loff_t *ppos)
224 struct dvb_device *dvbdev = file->private_data;
225 struct dmxdev *dmxdev = dvbdev->priv;
228 if (!dmxdev->demux->write)
230 if ((file->f_flags & O_ACCMODE) != O_WRONLY)
232 if (mutex_lock_interruptible(&dmxdev->mutex))
236 mutex_unlock(&dmxdev->mutex);
239 ret = dmxdev->demux->write(dmxdev->demux, buf, count);
240 mutex_unlock(&dmxdev->mutex);
244 static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
247 struct dvb_device *dvbdev = file->private_data;
248 struct dmxdev *dmxdev = dvbdev->priv;
253 return dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
254 file->f_flags & O_NONBLOCK,
258 static int dvb_dvr_set_buffer_size(struct dmxdev *dmxdev,
261 struct dvb_ringbuffer *buf = &dmxdev->dvr_buffer;
265 dprintk("%s\n", __func__);
267 if (buf->size == size)
272 newmem = vmalloc(size);
278 spin_lock_irq(&dmxdev->lock);
282 /* reset and not flush in case the buffer shrinks */
283 dvb_ringbuffer_reset(buf);
284 spin_unlock_irq(&dmxdev->lock);
291 static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter
292 *dmxdevfilter, int state)
294 spin_lock_irq(&dmxdevfilter->dev->lock);
295 dmxdevfilter->state = state;
296 spin_unlock_irq(&dmxdevfilter->dev->lock);
299 static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter,
302 struct dvb_ringbuffer *buf = &dmxdevfilter->buffer;
306 if (buf->size == size)
310 if (dmxdevfilter->state >= DMXDEV_STATE_GO)
313 newmem = vmalloc(size);
319 spin_lock_irq(&dmxdevfilter->dev->lock);
323 /* reset and not flush in case the buffer shrinks */
324 dvb_ringbuffer_reset(buf);
325 spin_unlock_irq(&dmxdevfilter->dev->lock);
332 static void dvb_dmxdev_filter_timeout(struct timer_list *t)
334 struct dmxdev_filter *dmxdevfilter = from_timer(dmxdevfilter, t, timer);
336 dmxdevfilter->buffer.error = -ETIMEDOUT;
337 spin_lock_irq(&dmxdevfilter->dev->lock);
338 dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT;
339 spin_unlock_irq(&dmxdevfilter->dev->lock);
340 wake_up(&dmxdevfilter->buffer.queue);
343 static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
345 struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec;
347 del_timer(&dmxdevfilter->timer);
349 dmxdevfilter->timer.expires =
350 jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000;
351 add_timer(&dmxdevfilter->timer);
355 static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
356 const u8 *buffer2, size_t buffer2_len,
357 struct dmx_section_filter *filter)
359 struct dmxdev_filter *dmxdevfilter = filter->priv;
362 if (dmxdevfilter->buffer.error) {
363 wake_up(&dmxdevfilter->buffer.queue);
366 spin_lock(&dmxdevfilter->dev->lock);
367 if (dmxdevfilter->state != DMXDEV_STATE_GO) {
368 spin_unlock(&dmxdevfilter->dev->lock);
371 del_timer(&dmxdevfilter->timer);
372 dprintk("section callback %*ph\n", 6, buffer1);
373 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
375 if (ret == buffer1_len) {
376 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
380 dmxdevfilter->buffer.error = ret;
381 if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
382 dmxdevfilter->state = DMXDEV_STATE_DONE;
383 spin_unlock(&dmxdevfilter->dev->lock);
384 wake_up(&dmxdevfilter->buffer.queue);
388 static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
389 const u8 *buffer2, size_t buffer2_len,
390 struct dmx_ts_feed *feed)
392 struct dmxdev_filter *dmxdevfilter = feed->priv;
393 struct dvb_ringbuffer *buffer;
396 spin_lock(&dmxdevfilter->dev->lock);
397 if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) {
398 spin_unlock(&dmxdevfilter->dev->lock);
402 if (dmxdevfilter->params.pes.output == DMX_OUT_TAP
403 || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP)
404 buffer = &dmxdevfilter->buffer;
406 buffer = &dmxdevfilter->dev->dvr_buffer;
408 spin_unlock(&dmxdevfilter->dev->lock);
409 wake_up(&buffer->queue);
412 ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
413 if (ret == buffer1_len)
414 ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
417 spin_unlock(&dmxdevfilter->dev->lock);
418 wake_up(&buffer->queue);
422 /* stop feed but only mark the specified filter as stopped (state set) */
423 static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
425 struct dmxdev_feed *feed;
427 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
429 switch (dmxdevfilter->type) {
430 case DMXDEV_TYPE_SEC:
431 del_timer(&dmxdevfilter->timer);
432 dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
434 case DMXDEV_TYPE_PES:
435 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next)
436 feed->ts->stop_filtering(feed->ts);
444 /* start feed associated with the specified filter */
445 static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
447 struct dmxdev_feed *feed;
450 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
452 switch (filter->type) {
453 case DMXDEV_TYPE_SEC:
454 return filter->feed.sec->start_filtering(filter->feed.sec);
455 case DMXDEV_TYPE_PES:
456 list_for_each_entry(feed, &filter->feed.ts, next) {
457 ret = feed->ts->start_filtering(feed->ts);
459 dvb_dmxdev_feed_stop(filter);
471 /* restart section feed if it has filters left associated with it,
472 otherwise release the feed */
473 static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
476 struct dmxdev *dmxdev = filter->dev;
477 u16 pid = filter->params.sec.pid;
479 for (i = 0; i < dmxdev->filternum; i++)
480 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
481 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
482 dmxdev->filter[i].params.sec.pid == pid) {
483 dvb_dmxdev_feed_start(&dmxdev->filter[i]);
487 filter->dev->demux->release_section_feed(dmxdev->demux,
493 static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
495 struct dmxdev_feed *feed;
496 struct dmx_demux *demux;
498 if (dmxdevfilter->state < DMXDEV_STATE_GO)
501 switch (dmxdevfilter->type) {
502 case DMXDEV_TYPE_SEC:
503 if (!dmxdevfilter->feed.sec)
505 dvb_dmxdev_feed_stop(dmxdevfilter);
506 if (dmxdevfilter->filter.sec)
507 dmxdevfilter->feed.sec->
508 release_filter(dmxdevfilter->feed.sec,
509 dmxdevfilter->filter.sec);
510 dvb_dmxdev_feed_restart(dmxdevfilter);
511 dmxdevfilter->feed.sec = NULL;
513 case DMXDEV_TYPE_PES:
514 dvb_dmxdev_feed_stop(dmxdevfilter);
515 demux = dmxdevfilter->dev->demux;
516 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) {
517 demux->release_ts_feed(demux, feed->ts);
522 if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED)
527 dvb_ringbuffer_flush(&dmxdevfilter->buffer);
531 static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter)
533 struct dmxdev_feed *feed, *tmp;
535 /* delete all PIDs */
536 list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) {
537 list_del(&feed->next);
541 BUG_ON(!list_empty(&dmxdevfilter->feed.ts));
544 static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
546 if (dmxdevfilter->state < DMXDEV_STATE_SET)
549 if (dmxdevfilter->type == DMXDEV_TYPE_PES)
550 dvb_dmxdev_delete_pids(dmxdevfilter);
552 dmxdevfilter->type = DMXDEV_TYPE_NONE;
553 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
557 static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
558 struct dmxdev_filter *filter,
559 struct dmxdev_feed *feed)
562 struct dmx_pes_filter_params *para = &filter->params.pes;
563 enum dmx_output otype;
566 enum dmx_ts_pes ts_pes;
567 struct dmx_ts_feed *tsfeed;
570 otype = para->output;
572 ts_pes = para->pes_type;
574 if (ts_pes < DMX_PES_OTHER)
575 ts_type = TS_DECODER;
579 if (otype == DMX_OUT_TS_TAP)
580 ts_type |= TS_PACKET;
581 else if (otype == DMX_OUT_TSDEMUX_TAP)
582 ts_type |= TS_PACKET | TS_DEMUX;
583 else if (otype == DMX_OUT_TAP)
584 ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY;
586 ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts,
587 dvb_dmxdev_ts_callback);
592 tsfeed->priv = filter;
594 ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, timeout);
596 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
600 ret = tsfeed->start_filtering(tsfeed);
602 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
609 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
611 struct dmxdev *dmxdev = filter->dev;
612 struct dmxdev_feed *feed;
616 if (filter->state < DMXDEV_STATE_SET)
619 if (filter->state >= DMXDEV_STATE_GO)
620 dvb_dmxdev_filter_stop(filter);
622 if (!filter->buffer.data) {
623 mem = vmalloc(filter->buffer.size);
626 spin_lock_irq(&filter->dev->lock);
627 filter->buffer.data = mem;
628 spin_unlock_irq(&filter->dev->lock);
631 dvb_ringbuffer_flush(&filter->buffer);
633 switch (filter->type) {
634 case DMXDEV_TYPE_SEC:
636 struct dmx_sct_filter_params *para = &filter->params.sec;
637 struct dmx_section_filter **secfilter = &filter->filter.sec;
638 struct dmx_section_feed **secfeed = &filter->feed.sec;
644 /* find active filter/feed with same PID */
645 for (i = 0; i < dmxdev->filternum; i++) {
646 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
647 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
648 dmxdev->filter[i].params.sec.pid == para->pid) {
649 *secfeed = dmxdev->filter[i].feed.sec;
654 /* if no feed found, try to allocate new one */
656 ret = dmxdev->demux->allocate_section_feed(dmxdev->demux,
658 dvb_dmxdev_section_callback);
660 pr_err("DVB (%s): could not alloc feed\n",
665 ret = (*secfeed)->set(*secfeed, para->pid,
666 (para->flags & DMX_CHECK_CRC) ? 1 : 0);
668 pr_err("DVB (%s): could not set feed\n",
670 dvb_dmxdev_feed_restart(filter);
674 dvb_dmxdev_feed_stop(filter);
677 ret = (*secfeed)->allocate_filter(*secfeed, secfilter);
679 dvb_dmxdev_feed_restart(filter);
680 filter->feed.sec->start_filtering(*secfeed);
681 dprintk("could not get filter\n");
685 (*secfilter)->priv = filter;
687 memcpy(&((*secfilter)->filter_value[3]),
688 &(para->filter.filter[1]), DMX_FILTER_SIZE - 1);
689 memcpy(&(*secfilter)->filter_mask[3],
690 ¶->filter.mask[1], DMX_FILTER_SIZE - 1);
691 memcpy(&(*secfilter)->filter_mode[3],
692 ¶->filter.mode[1], DMX_FILTER_SIZE - 1);
694 (*secfilter)->filter_value[0] = para->filter.filter[0];
695 (*secfilter)->filter_mask[0] = para->filter.mask[0];
696 (*secfilter)->filter_mode[0] = para->filter.mode[0];
697 (*secfilter)->filter_mask[1] = 0;
698 (*secfilter)->filter_mask[2] = 0;
702 ret = filter->feed.sec->start_filtering(filter->feed.sec);
706 dvb_dmxdev_filter_timer(filter);
709 case DMXDEV_TYPE_PES:
710 list_for_each_entry(feed, &filter->feed.ts, next) {
711 ret = dvb_dmxdev_start_feed(dmxdev, filter, feed);
713 dvb_dmxdev_filter_stop(filter);
722 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
726 static int dvb_demux_open(struct inode *inode, struct file *file)
728 struct dvb_device *dvbdev = file->private_data;
729 struct dmxdev *dmxdev = dvbdev->priv;
731 struct dmxdev_filter *dmxdevfilter;
736 if (mutex_lock_interruptible(&dmxdev->mutex))
739 for (i = 0; i < dmxdev->filternum; i++)
740 if (dmxdev->filter[i].state == DMXDEV_STATE_FREE)
743 if (i == dmxdev->filternum) {
744 mutex_unlock(&dmxdev->mutex);
748 dmxdevfilter = &dmxdev->filter[i];
749 mutex_init(&dmxdevfilter->mutex);
750 file->private_data = dmxdevfilter;
752 dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
753 dmxdevfilter->type = DMXDEV_TYPE_NONE;
754 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
755 timer_setup(&dmxdevfilter->timer, dvb_dmxdev_filter_timeout, 0);
759 mutex_unlock(&dmxdev->mutex);
763 static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
764 struct dmxdev_filter *dmxdevfilter)
766 mutex_lock(&dmxdev->mutex);
767 mutex_lock(&dmxdevfilter->mutex);
769 dvb_dmxdev_filter_stop(dmxdevfilter);
770 dvb_dmxdev_filter_reset(dmxdevfilter);
772 if (dmxdevfilter->buffer.data) {
773 void *mem = dmxdevfilter->buffer.data;
775 spin_lock_irq(&dmxdev->lock);
776 dmxdevfilter->buffer.data = NULL;
777 spin_unlock_irq(&dmxdev->lock);
781 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
782 wake_up(&dmxdevfilter->buffer.queue);
783 mutex_unlock(&dmxdevfilter->mutex);
784 mutex_unlock(&dmxdev->mutex);
788 static inline void invert_mode(struct dmx_filter *filter)
792 for (i = 0; i < DMX_FILTER_SIZE; i++)
793 filter->mode[i] ^= 0xff;
796 static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev,
797 struct dmxdev_filter *filter, u16 pid)
799 struct dmxdev_feed *feed;
801 if ((filter->type != DMXDEV_TYPE_PES) ||
802 (filter->state < DMXDEV_STATE_SET))
805 /* only TS packet filters may have multiple PIDs */
806 if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) &&
807 (!list_empty(&filter->feed.ts)))
810 feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL);
815 list_add(&feed->next, &filter->feed.ts);
817 if (filter->state >= DMXDEV_STATE_GO)
818 return dvb_dmxdev_start_feed(dmxdev, filter, feed);
823 static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev,
824 struct dmxdev_filter *filter, u16 pid)
826 struct dmxdev_feed *feed, *tmp;
828 if ((filter->type != DMXDEV_TYPE_PES) ||
829 (filter->state < DMXDEV_STATE_SET))
832 list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) {
833 if ((feed->pid == pid) && (feed->ts != NULL)) {
834 feed->ts->stop_filtering(feed->ts);
835 filter->dev->demux->release_ts_feed(filter->dev->demux,
837 list_del(&feed->next);
845 static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
846 struct dmxdev_filter *dmxdevfilter,
847 struct dmx_sct_filter_params *params)
849 dprintk("%s: PID=0x%04x, flags=%02x, timeout=%d\n",
850 __func__, params->pid, params->flags, params->timeout);
852 dvb_dmxdev_filter_stop(dmxdevfilter);
854 dmxdevfilter->type = DMXDEV_TYPE_SEC;
855 memcpy(&dmxdevfilter->params.sec,
856 params, sizeof(struct dmx_sct_filter_params));
857 invert_mode(&dmxdevfilter->params.sec.filter);
858 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
860 if (params->flags & DMX_IMMEDIATE_START)
861 return dvb_dmxdev_filter_start(dmxdevfilter);
866 static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
867 struct dmxdev_filter *dmxdevfilter,
868 struct dmx_pes_filter_params *params)
872 dvb_dmxdev_filter_stop(dmxdevfilter);
873 dvb_dmxdev_filter_reset(dmxdevfilter);
875 if ((unsigned int)params->pes_type > DMX_PES_OTHER)
878 dmxdevfilter->type = DMXDEV_TYPE_PES;
879 memcpy(&dmxdevfilter->params, params,
880 sizeof(struct dmx_pes_filter_params));
881 INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
883 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
885 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter,
886 dmxdevfilter->params.pes.pid);
890 if (params->flags & DMX_IMMEDIATE_START)
891 return dvb_dmxdev_filter_start(dmxdevfilter);
896 static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
897 struct file *file, char __user *buf,
898 size_t count, loff_t *ppos)
903 if (dfil->todo <= 0) {
904 hcount = 3 + dfil->todo;
907 result = dvb_dmxdev_buffer_read(&dfil->buffer,
908 file->f_flags & O_NONBLOCK,
914 if (copy_from_user(dfil->secheader - dfil->todo, buf, result))
919 dfil->todo -= result;
922 dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff;
926 if (count > dfil->todo)
928 result = dvb_dmxdev_buffer_read(&dfil->buffer,
929 file->f_flags & O_NONBLOCK,
933 dfil->todo -= result;
934 return (result + done);
938 dvb_demux_read(struct file *file, char __user *buf, size_t count,
941 struct dmxdev_filter *dmxdevfilter = file->private_data;
944 if (mutex_lock_interruptible(&dmxdevfilter->mutex))
947 if (dmxdevfilter->type == DMXDEV_TYPE_SEC)
948 ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
950 ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
951 file->f_flags & O_NONBLOCK,
954 mutex_unlock(&dmxdevfilter->mutex);
958 static int dvb_demux_do_ioctl(struct file *file,
959 unsigned int cmd, void *parg)
961 struct dmxdev_filter *dmxdevfilter = file->private_data;
962 struct dmxdev *dmxdev = dmxdevfilter->dev;
963 unsigned long arg = (unsigned long)parg;
966 if (mutex_lock_interruptible(&dmxdev->mutex))
971 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
972 mutex_unlock(&dmxdev->mutex);
975 if (dmxdevfilter->state < DMXDEV_STATE_SET)
978 ret = dvb_dmxdev_filter_start(dmxdevfilter);
979 mutex_unlock(&dmxdevfilter->mutex);
983 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
984 mutex_unlock(&dmxdev->mutex);
987 ret = dvb_dmxdev_filter_stop(dmxdevfilter);
988 mutex_unlock(&dmxdevfilter->mutex);
992 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
993 mutex_unlock(&dmxdev->mutex);
996 ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg);
997 mutex_unlock(&dmxdevfilter->mutex);
1000 case DMX_SET_PES_FILTER:
1001 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1002 mutex_unlock(&dmxdev->mutex);
1003 return -ERESTARTSYS;
1005 ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg);
1006 mutex_unlock(&dmxdevfilter->mutex);
1009 case DMX_SET_BUFFER_SIZE:
1010 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1011 mutex_unlock(&dmxdev->mutex);
1012 return -ERESTARTSYS;
1014 ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
1015 mutex_unlock(&dmxdevfilter->mutex);
1018 case DMX_GET_PES_PIDS:
1019 if (!dmxdev->demux->get_pes_pids) {
1023 dmxdev->demux->get_pes_pids(dmxdev->demux, parg);
1027 if (!dmxdev->demux->get_stc) {
1031 ret = dmxdev->demux->get_stc(dmxdev->demux,
1032 ((struct dmx_stc *)parg)->num,
1033 &((struct dmx_stc *)parg)->stc,
1034 &((struct dmx_stc *)parg)->base);
1038 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1042 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1043 mutex_unlock(&dmxdevfilter->mutex);
1046 case DMX_REMOVE_PID:
1047 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1051 ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1052 mutex_unlock(&dmxdevfilter->mutex);
1059 mutex_unlock(&dmxdev->mutex);
1063 static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
1066 return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
1069 static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
1071 struct dmxdev_filter *dmxdevfilter = file->private_data;
1072 unsigned int mask = 0;
1074 if ((!dmxdevfilter) || dmxdevfilter->dev->exit)
1077 poll_wait(file, &dmxdevfilter->buffer.queue, wait);
1079 if (dmxdevfilter->state != DMXDEV_STATE_GO &&
1080 dmxdevfilter->state != DMXDEV_STATE_DONE &&
1081 dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
1084 if (dmxdevfilter->buffer.error)
1085 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1087 if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer))
1088 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1093 static int dvb_demux_release(struct inode *inode, struct file *file)
1095 struct dmxdev_filter *dmxdevfilter = file->private_data;
1096 struct dmxdev *dmxdev = dmxdevfilter->dev;
1100 ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
1102 mutex_lock(&dmxdev->mutex);
1103 dmxdev->dvbdev->users--;
1104 if (dmxdev->dvbdev->users == 1 && dmxdev->exit == 1) {
1105 mutex_unlock(&dmxdev->mutex);
1106 wake_up(&dmxdev->dvbdev->wait_queue);
1108 mutex_unlock(&dmxdev->mutex);
1113 static const struct file_operations dvb_demux_fops = {
1114 .owner = THIS_MODULE,
1115 .read = dvb_demux_read,
1116 .unlocked_ioctl = dvb_demux_ioctl,
1117 .open = dvb_demux_open,
1118 .release = dvb_demux_release,
1119 .poll = dvb_demux_poll,
1120 .llseek = default_llseek,
1123 static const struct dvb_device dvbdev_demux = {
1127 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
1128 .name = "dvb-demux",
1130 .fops = &dvb_demux_fops
1133 static int dvb_dvr_do_ioctl(struct file *file,
1134 unsigned int cmd, void *parg)
1136 struct dvb_device *dvbdev = file->private_data;
1137 struct dmxdev *dmxdev = dvbdev->priv;
1138 unsigned long arg = (unsigned long)parg;
1141 if (mutex_lock_interruptible(&dmxdev->mutex))
1142 return -ERESTARTSYS;
1145 case DMX_SET_BUFFER_SIZE:
1146 ret = dvb_dvr_set_buffer_size(dmxdev, arg);
1153 mutex_unlock(&dmxdev->mutex);
1157 static long dvb_dvr_ioctl(struct file *file,
1158 unsigned int cmd, unsigned long arg)
1160 return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
1163 static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
1165 struct dvb_device *dvbdev = file->private_data;
1166 struct dmxdev *dmxdev = dvbdev->priv;
1167 unsigned int mask = 0;
1169 dprintk("%s\n", __func__);
1174 poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
1176 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
1177 if (dmxdev->dvr_buffer.error)
1178 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1180 if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer))
1181 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1183 mask |= (POLLOUT | POLLWRNORM | POLLPRI);
1188 static const struct file_operations dvb_dvr_fops = {
1189 .owner = THIS_MODULE,
1190 .read = dvb_dvr_read,
1191 .write = dvb_dvr_write,
1192 .unlocked_ioctl = dvb_dvr_ioctl,
1193 .open = dvb_dvr_open,
1194 .release = dvb_dvr_release,
1195 .poll = dvb_dvr_poll,
1196 .llseek = default_llseek,
1199 static const struct dvb_device dvbdev_dvr = {
1203 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
1206 .fops = &dvb_dvr_fops
1208 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
1212 if (dmxdev->demux->open(dmxdev->demux) < 0)
1215 dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter));
1216 if (!dmxdev->filter)
1219 mutex_init(&dmxdev->mutex);
1220 spin_lock_init(&dmxdev->lock);
1221 for (i = 0; i < dmxdev->filternum; i++) {
1222 dmxdev->filter[i].dev = dmxdev;
1223 dmxdev->filter[i].buffer.data = NULL;
1224 dvb_dmxdev_filter_state_set(&dmxdev->filter[i],
1228 dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
1229 DVB_DEVICE_DEMUX, dmxdev->filternum);
1230 dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
1231 dmxdev, DVB_DEVICE_DVR, dmxdev->filternum);
1233 dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
1238 EXPORT_SYMBOL(dvb_dmxdev_init);
1240 void dvb_dmxdev_release(struct dmxdev *dmxdev)
1243 if (dmxdev->dvbdev->users > 1) {
1244 wait_event(dmxdev->dvbdev->wait_queue,
1245 dmxdev->dvbdev->users == 1);
1247 if (dmxdev->dvr_dvbdev->users > 1) {
1248 wait_event(dmxdev->dvr_dvbdev->wait_queue,
1249 dmxdev->dvr_dvbdev->users == 1);
1252 dvb_unregister_device(dmxdev->dvbdev);
1253 dvb_unregister_device(dmxdev->dvr_dvbdev);
1255 vfree(dmxdev->filter);
1256 dmxdev->filter = NULL;
1257 dmxdev->demux->close(dmxdev->demux);
1260 EXPORT_SYMBOL(dvb_dmxdev_release);