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.
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #include <linux/sched.h>
24 #include <linux/spinlock.h>
25 #include <linux/slab.h>
26 #include <linux/vmalloc.h>
27 #include <linux/module.h>
28 #include <linux/smp_lock.h>
29 #include <linux/poll.h>
30 #include <linux/ioctl.h>
31 #include <linux/wait.h>
32 #include <asm/uaccess.h>
33 #include <asm/system.h>
38 module_param(debug, int, 0644);
39 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
41 #define dprintk if (debug) printk
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("dmxdev: 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("function : %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) {
150 if (!dvbdev->readers) {
151 mutex_unlock(&dmxdev->mutex);
154 mem = vmalloc(DVR_BUFFER_SIZE);
156 mutex_unlock(&dmxdev->mutex);
159 dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
163 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
164 dmxdev->dvr_orig_fe = dmxdev->demux->frontend;
166 if (!dmxdev->demux->write) {
167 mutex_unlock(&dmxdev->mutex);
171 front = get_fe(dmxdev->demux, DMX_MEMORY_FE);
174 mutex_unlock(&dmxdev->mutex);
177 dmxdev->demux->disconnect_frontend(dmxdev->demux);
178 dmxdev->demux->connect_frontend(dmxdev->demux, front);
181 mutex_unlock(&dmxdev->mutex);
185 static int dvb_dvr_release(struct inode *inode, struct file *file)
187 struct dvb_device *dvbdev = file->private_data;
188 struct dmxdev *dmxdev = dvbdev->priv;
190 mutex_lock(&dmxdev->mutex);
192 if ((file->f_flags & O_ACCMODE) == O_WRONLY) {
193 dmxdev->demux->disconnect_frontend(dmxdev->demux);
194 dmxdev->demux->connect_frontend(dmxdev->demux,
195 dmxdev->dvr_orig_fe);
197 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
199 if (dmxdev->dvr_buffer.data) {
200 void *mem = dmxdev->dvr_buffer.data;
202 spin_lock_irq(&dmxdev->lock);
203 dmxdev->dvr_buffer.data = NULL;
204 spin_unlock_irq(&dmxdev->lock);
210 if (dvbdev->users == 1 && dmxdev->exit == 1) {
211 fops_put(file->f_op);
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("function : %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(unsigned long data)
334 struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data;
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.function = dvb_dmxdev_filter_timeout;
350 dmxdevfilter->timer.data = (unsigned long)dmxdevfilter;
351 dmxdevfilter->timer.expires =
352 jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000;
353 add_timer(&dmxdevfilter->timer);
357 static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
358 const u8 *buffer2, size_t buffer2_len,
359 struct dmx_section_filter *filter,
360 enum dmx_success success)
362 struct dmxdev_filter *dmxdevfilter = filter->priv;
365 if (dmxdevfilter->buffer.error) {
366 wake_up(&dmxdevfilter->buffer.queue);
369 spin_lock(&dmxdevfilter->dev->lock);
370 if (dmxdevfilter->state != DMXDEV_STATE_GO) {
371 spin_unlock(&dmxdevfilter->dev->lock);
374 del_timer(&dmxdevfilter->timer);
375 dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n",
376 buffer1[0], buffer1[1],
377 buffer1[2], buffer1[3], buffer1[4], buffer1[5]);
378 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
380 if (ret == buffer1_len) {
381 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
385 dvb_ringbuffer_flush(&dmxdevfilter->buffer);
386 dmxdevfilter->buffer.error = ret;
388 if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
389 dmxdevfilter->state = DMXDEV_STATE_DONE;
390 spin_unlock(&dmxdevfilter->dev->lock);
391 wake_up(&dmxdevfilter->buffer.queue);
395 static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
396 const u8 *buffer2, size_t buffer2_len,
397 struct dmx_ts_feed *feed,
398 enum dmx_success success)
400 struct dmxdev_filter *dmxdevfilter = feed->priv;
401 struct dvb_ringbuffer *buffer;
404 spin_lock(&dmxdevfilter->dev->lock);
405 if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) {
406 spin_unlock(&dmxdevfilter->dev->lock);
410 if (dmxdevfilter->params.pes.output == DMX_OUT_TAP
411 || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP)
412 buffer = &dmxdevfilter->buffer;
414 buffer = &dmxdevfilter->dev->dvr_buffer;
416 spin_unlock(&dmxdevfilter->dev->lock);
417 wake_up(&buffer->queue);
420 ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
421 if (ret == buffer1_len)
422 ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
424 dvb_ringbuffer_flush(buffer);
427 spin_unlock(&dmxdevfilter->dev->lock);
428 wake_up(&buffer->queue);
432 /* stop feed but only mark the specified filter as stopped (state set) */
433 static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
435 struct dmxdev_feed *feed;
437 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
439 switch (dmxdevfilter->type) {
440 case DMXDEV_TYPE_SEC:
441 del_timer(&dmxdevfilter->timer);
442 dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
444 case DMXDEV_TYPE_PES:
445 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next)
446 feed->ts->stop_filtering(feed->ts);
454 /* start feed associated with the specified filter */
455 static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
457 struct dmxdev_feed *feed;
460 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
462 switch (filter->type) {
463 case DMXDEV_TYPE_SEC:
464 return filter->feed.sec->start_filtering(filter->feed.sec);
465 case DMXDEV_TYPE_PES:
466 list_for_each_entry(feed, &filter->feed.ts, next) {
467 ret = feed->ts->start_filtering(feed->ts);
469 dvb_dmxdev_feed_stop(filter);
481 /* restart section feed if it has filters left associated with it,
482 otherwise release the feed */
483 static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
486 struct dmxdev *dmxdev = filter->dev;
487 u16 pid = filter->params.sec.pid;
489 for (i = 0; i < dmxdev->filternum; i++)
490 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
491 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
492 dmxdev->filter[i].params.sec.pid == pid) {
493 dvb_dmxdev_feed_start(&dmxdev->filter[i]);
497 filter->dev->demux->release_section_feed(dmxdev->demux,
503 static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
505 struct dmxdev_feed *feed;
506 struct dmx_demux *demux;
508 if (dmxdevfilter->state < DMXDEV_STATE_GO)
511 switch (dmxdevfilter->type) {
512 case DMXDEV_TYPE_SEC:
513 if (!dmxdevfilter->feed.sec)
515 dvb_dmxdev_feed_stop(dmxdevfilter);
516 if (dmxdevfilter->filter.sec)
517 dmxdevfilter->feed.sec->
518 release_filter(dmxdevfilter->feed.sec,
519 dmxdevfilter->filter.sec);
520 dvb_dmxdev_feed_restart(dmxdevfilter);
521 dmxdevfilter->feed.sec = NULL;
523 case DMXDEV_TYPE_PES:
524 dvb_dmxdev_feed_stop(dmxdevfilter);
525 demux = dmxdevfilter->dev->demux;
526 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) {
527 demux->release_ts_feed(demux, feed->ts);
532 if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED)
537 dvb_ringbuffer_flush(&dmxdevfilter->buffer);
541 static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter)
543 struct dmxdev_feed *feed, *tmp;
545 /* delete all PIDs */
546 list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) {
547 list_del(&feed->next);
551 BUG_ON(!list_empty(&dmxdevfilter->feed.ts));
554 static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
556 if (dmxdevfilter->state < DMXDEV_STATE_SET)
559 if (dmxdevfilter->type == DMXDEV_TYPE_PES)
560 dvb_dmxdev_delete_pids(dmxdevfilter);
562 dmxdevfilter->type = DMXDEV_TYPE_NONE;
563 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
567 static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
568 struct dmxdev_filter *filter,
569 struct dmxdev_feed *feed)
571 struct timespec timeout = { 0 };
572 struct dmx_pes_filter_params *para = &filter->params.pes;
576 enum dmx_ts_pes ts_pes;
577 struct dmx_ts_feed *tsfeed;
580 otype = para->output;
582 ts_pes = (enum dmx_ts_pes)para->pes_type;
584 if (ts_pes < DMX_PES_OTHER)
585 ts_type = TS_DECODER;
589 if (otype == DMX_OUT_TS_TAP)
590 ts_type |= TS_PACKET;
591 else if (otype == DMX_OUT_TSDEMUX_TAP)
592 ts_type |= TS_PACKET | TS_DEMUX;
593 else if (otype == DMX_OUT_TAP)
594 ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY;
596 ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts,
597 dvb_dmxdev_ts_callback);
602 tsfeed->priv = filter;
604 ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, 32768, timeout);
606 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
610 ret = tsfeed->start_filtering(tsfeed);
612 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
619 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
621 struct dmxdev *dmxdev = filter->dev;
622 struct dmxdev_feed *feed;
626 if (filter->state < DMXDEV_STATE_SET)
629 if (filter->state >= DMXDEV_STATE_GO)
630 dvb_dmxdev_filter_stop(filter);
632 if (!filter->buffer.data) {
633 mem = vmalloc(filter->buffer.size);
636 spin_lock_irq(&filter->dev->lock);
637 filter->buffer.data = mem;
638 spin_unlock_irq(&filter->dev->lock);
641 dvb_ringbuffer_flush(&filter->buffer);
643 switch (filter->type) {
644 case DMXDEV_TYPE_SEC:
646 struct dmx_sct_filter_params *para = &filter->params.sec;
647 struct dmx_section_filter **secfilter = &filter->filter.sec;
648 struct dmx_section_feed **secfeed = &filter->feed.sec;
654 /* find active filter/feed with same PID */
655 for (i = 0; i < dmxdev->filternum; i++) {
656 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
657 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
658 dmxdev->filter[i].params.sec.pid == para->pid) {
659 *secfeed = dmxdev->filter[i].feed.sec;
664 /* if no feed found, try to allocate new one */
666 ret = dmxdev->demux->allocate_section_feed(dmxdev->demux,
668 dvb_dmxdev_section_callback);
670 printk("DVB (%s): could not alloc feed\n",
675 ret = (*secfeed)->set(*secfeed, para->pid, 32768,
676 (para->flags & DMX_CHECK_CRC) ? 1 : 0);
678 printk("DVB (%s): could not set feed\n",
680 dvb_dmxdev_feed_restart(filter);
684 dvb_dmxdev_feed_stop(filter);
687 ret = (*secfeed)->allocate_filter(*secfeed, secfilter);
689 dvb_dmxdev_feed_restart(filter);
690 filter->feed.sec->start_filtering(*secfeed);
691 dprintk("could not get filter\n");
695 (*secfilter)->priv = filter;
697 memcpy(&((*secfilter)->filter_value[3]),
698 &(para->filter.filter[1]), DMX_FILTER_SIZE - 1);
699 memcpy(&(*secfilter)->filter_mask[3],
700 ¶->filter.mask[1], DMX_FILTER_SIZE - 1);
701 memcpy(&(*secfilter)->filter_mode[3],
702 ¶->filter.mode[1], DMX_FILTER_SIZE - 1);
704 (*secfilter)->filter_value[0] = para->filter.filter[0];
705 (*secfilter)->filter_mask[0] = para->filter.mask[0];
706 (*secfilter)->filter_mode[0] = para->filter.mode[0];
707 (*secfilter)->filter_mask[1] = 0;
708 (*secfilter)->filter_mask[2] = 0;
712 ret = filter->feed.sec->start_filtering(filter->feed.sec);
716 dvb_dmxdev_filter_timer(filter);
719 case DMXDEV_TYPE_PES:
720 list_for_each_entry(feed, &filter->feed.ts, next) {
721 ret = dvb_dmxdev_start_feed(dmxdev, filter, feed);
723 dvb_dmxdev_filter_stop(filter);
732 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
736 static int dvb_demux_open(struct inode *inode, struct file *file)
738 struct dvb_device *dvbdev = file->private_data;
739 struct dmxdev *dmxdev = dvbdev->priv;
741 struct dmxdev_filter *dmxdevfilter;
746 if (mutex_lock_interruptible(&dmxdev->mutex))
749 for (i = 0; i < dmxdev->filternum; i++)
750 if (dmxdev->filter[i].state == DMXDEV_STATE_FREE)
753 if (i == dmxdev->filternum) {
754 mutex_unlock(&dmxdev->mutex);
758 dmxdevfilter = &dmxdev->filter[i];
759 mutex_init(&dmxdevfilter->mutex);
760 file->private_data = dmxdevfilter;
762 dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
763 dmxdevfilter->type = DMXDEV_TYPE_NONE;
764 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
765 init_timer(&dmxdevfilter->timer);
769 mutex_unlock(&dmxdev->mutex);
773 static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
774 struct dmxdev_filter *dmxdevfilter)
776 mutex_lock(&dmxdev->mutex);
777 mutex_lock(&dmxdevfilter->mutex);
779 dvb_dmxdev_filter_stop(dmxdevfilter);
780 dvb_dmxdev_filter_reset(dmxdevfilter);
782 if (dmxdevfilter->buffer.data) {
783 void *mem = dmxdevfilter->buffer.data;
785 spin_lock_irq(&dmxdev->lock);
786 dmxdevfilter->buffer.data = NULL;
787 spin_unlock_irq(&dmxdev->lock);
791 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
792 wake_up(&dmxdevfilter->buffer.queue);
793 mutex_unlock(&dmxdevfilter->mutex);
794 mutex_unlock(&dmxdev->mutex);
798 static inline void invert_mode(dmx_filter_t *filter)
802 for (i = 0; i < DMX_FILTER_SIZE; i++)
803 filter->mode[i] ^= 0xff;
806 static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev,
807 struct dmxdev_filter *filter, u16 pid)
809 struct dmxdev_feed *feed;
811 if ((filter->type != DMXDEV_TYPE_PES) ||
812 (filter->state < DMXDEV_STATE_SET))
815 /* only TS packet filters may have multiple PIDs */
816 if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) &&
817 (!list_empty(&filter->feed.ts)))
820 feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL);
825 list_add(&feed->next, &filter->feed.ts);
827 if (filter->state >= DMXDEV_STATE_GO)
828 return dvb_dmxdev_start_feed(dmxdev, filter, feed);
833 static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev,
834 struct dmxdev_filter *filter, u16 pid)
836 struct dmxdev_feed *feed, *tmp;
838 if ((filter->type != DMXDEV_TYPE_PES) ||
839 (filter->state < DMXDEV_STATE_SET))
842 list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) {
843 if ((feed->pid == pid) && (feed->ts != NULL)) {
844 feed->ts->stop_filtering(feed->ts);
845 filter->dev->demux->release_ts_feed(filter->dev->demux,
847 list_del(&feed->next);
855 static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
856 struct dmxdev_filter *dmxdevfilter,
857 struct dmx_sct_filter_params *params)
859 dprintk("function : %s\n", __func__);
861 dvb_dmxdev_filter_stop(dmxdevfilter);
863 dmxdevfilter->type = DMXDEV_TYPE_SEC;
864 memcpy(&dmxdevfilter->params.sec,
865 params, sizeof(struct dmx_sct_filter_params));
866 invert_mode(&dmxdevfilter->params.sec.filter);
867 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
869 if (params->flags & DMX_IMMEDIATE_START)
870 return dvb_dmxdev_filter_start(dmxdevfilter);
875 static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
876 struct dmxdev_filter *dmxdevfilter,
877 struct dmx_pes_filter_params *params)
881 dvb_dmxdev_filter_stop(dmxdevfilter);
882 dvb_dmxdev_filter_reset(dmxdevfilter);
884 if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0)
887 dmxdevfilter->type = DMXDEV_TYPE_PES;
888 memcpy(&dmxdevfilter->params, params,
889 sizeof(struct dmx_pes_filter_params));
890 INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
892 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
894 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter,
895 dmxdevfilter->params.pes.pid);
899 if (params->flags & DMX_IMMEDIATE_START)
900 return dvb_dmxdev_filter_start(dmxdevfilter);
905 static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
906 struct file *file, char __user *buf,
907 size_t count, loff_t *ppos)
912 if (dfil->todo <= 0) {
913 hcount = 3 + dfil->todo;
916 result = dvb_dmxdev_buffer_read(&dfil->buffer,
917 file->f_flags & O_NONBLOCK,
923 if (copy_from_user(dfil->secheader - dfil->todo, buf, result))
928 dfil->todo -= result;
931 dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff;
935 if (count > dfil->todo)
937 result = dvb_dmxdev_buffer_read(&dfil->buffer,
938 file->f_flags & O_NONBLOCK,
942 dfil->todo -= result;
943 return (result + done);
947 dvb_demux_read(struct file *file, char __user *buf, size_t count,
950 struct dmxdev_filter *dmxdevfilter = file->private_data;
953 if (mutex_lock_interruptible(&dmxdevfilter->mutex))
956 if (dmxdevfilter->type == DMXDEV_TYPE_SEC)
957 ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
959 ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
960 file->f_flags & O_NONBLOCK,
963 mutex_unlock(&dmxdevfilter->mutex);
967 static int dvb_demux_do_ioctl(struct file *file,
968 unsigned int cmd, void *parg)
970 struct dmxdev_filter *dmxdevfilter = file->private_data;
971 struct dmxdev *dmxdev = dmxdevfilter->dev;
972 unsigned long arg = (unsigned long)parg;
975 if (mutex_lock_interruptible(&dmxdev->mutex))
980 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
981 mutex_unlock(&dmxdev->mutex);
984 if (dmxdevfilter->state < DMXDEV_STATE_SET)
987 ret = dvb_dmxdev_filter_start(dmxdevfilter);
988 mutex_unlock(&dmxdevfilter->mutex);
992 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
993 mutex_unlock(&dmxdev->mutex);
996 ret = dvb_dmxdev_filter_stop(dmxdevfilter);
997 mutex_unlock(&dmxdevfilter->mutex);
1000 case DMX_SET_FILTER:
1001 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1002 mutex_unlock(&dmxdev->mutex);
1003 return -ERESTARTSYS;
1005 ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg);
1006 mutex_unlock(&dmxdevfilter->mutex);
1009 case DMX_SET_PES_FILTER:
1010 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1011 mutex_unlock(&dmxdev->mutex);
1012 return -ERESTARTSYS;
1014 ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg);
1015 mutex_unlock(&dmxdevfilter->mutex);
1018 case DMX_SET_BUFFER_SIZE:
1019 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1020 mutex_unlock(&dmxdev->mutex);
1021 return -ERESTARTSYS;
1023 ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
1024 mutex_unlock(&dmxdevfilter->mutex);
1027 case DMX_GET_PES_PIDS:
1028 if (!dmxdev->demux->get_pes_pids) {
1032 dmxdev->demux->get_pes_pids(dmxdev->demux, parg);
1036 if (!dmxdev->demux->get_caps) {
1040 ret = dmxdev->demux->get_caps(dmxdev->demux, parg);
1043 case DMX_SET_SOURCE:
1044 if (!dmxdev->demux->set_source) {
1048 ret = dmxdev->demux->set_source(dmxdev->demux, parg);
1052 if (!dmxdev->demux->get_stc) {
1056 ret = dmxdev->demux->get_stc(dmxdev->demux,
1057 ((struct dmx_stc *)parg)->num,
1058 &((struct dmx_stc *)parg)->stc,
1059 &((struct dmx_stc *)parg)->base);
1063 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1067 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1068 mutex_unlock(&dmxdevfilter->mutex);
1071 case DMX_REMOVE_PID:
1072 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1076 ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1077 mutex_unlock(&dmxdevfilter->mutex);
1084 mutex_unlock(&dmxdev->mutex);
1088 static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
1094 ret = dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
1100 static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
1102 struct dmxdev_filter *dmxdevfilter = file->private_data;
1103 unsigned int mask = 0;
1108 poll_wait(file, &dmxdevfilter->buffer.queue, wait);
1110 if (dmxdevfilter->state != DMXDEV_STATE_GO &&
1111 dmxdevfilter->state != DMXDEV_STATE_DONE &&
1112 dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
1115 if (dmxdevfilter->buffer.error)
1116 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1118 if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer))
1119 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1124 static int dvb_demux_release(struct inode *inode, struct file *file)
1126 struct dmxdev_filter *dmxdevfilter = file->private_data;
1127 struct dmxdev *dmxdev = dmxdevfilter->dev;
1131 ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
1133 mutex_lock(&dmxdev->mutex);
1134 dmxdev->dvbdev->users--;
1135 if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) {
1136 fops_put(file->f_op);
1138 mutex_unlock(&dmxdev->mutex);
1139 wake_up(&dmxdev->dvbdev->wait_queue);
1141 mutex_unlock(&dmxdev->mutex);
1146 static const struct file_operations dvb_demux_fops = {
1147 .owner = THIS_MODULE,
1148 .read = dvb_demux_read,
1149 .unlocked_ioctl = dvb_demux_ioctl,
1150 .open = dvb_demux_open,
1151 .release = dvb_demux_release,
1152 .poll = dvb_demux_poll,
1153 .llseek = default_llseek,
1156 static struct dvb_device dvbdev_demux = {
1160 .fops = &dvb_demux_fops
1163 static int dvb_dvr_do_ioctl(struct file *file,
1164 unsigned int cmd, void *parg)
1166 struct dvb_device *dvbdev = file->private_data;
1167 struct dmxdev *dmxdev = dvbdev->priv;
1168 unsigned long arg = (unsigned long)parg;
1171 if (mutex_lock_interruptible(&dmxdev->mutex))
1172 return -ERESTARTSYS;
1175 case DMX_SET_BUFFER_SIZE:
1176 ret = dvb_dvr_set_buffer_size(dmxdev, arg);
1183 mutex_unlock(&dmxdev->mutex);
1187 static long dvb_dvr_ioctl(struct file *file,
1188 unsigned int cmd, unsigned long arg)
1193 ret = dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
1199 static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
1201 struct dvb_device *dvbdev = file->private_data;
1202 struct dmxdev *dmxdev = dvbdev->priv;
1203 unsigned int mask = 0;
1205 dprintk("function : %s\n", __func__);
1207 poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
1209 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
1210 if (dmxdev->dvr_buffer.error)
1211 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1213 if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer))
1214 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1216 mask |= (POLLOUT | POLLWRNORM | POLLPRI);
1221 static const struct file_operations dvb_dvr_fops = {
1222 .owner = THIS_MODULE,
1223 .read = dvb_dvr_read,
1224 .write = dvb_dvr_write,
1225 .unlocked_ioctl = dvb_dvr_ioctl,
1226 .open = dvb_dvr_open,
1227 .release = dvb_dvr_release,
1228 .poll = dvb_dvr_poll,
1229 .llseek = default_llseek,
1232 static struct dvb_device dvbdev_dvr = {
1236 .fops = &dvb_dvr_fops
1239 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
1243 if (dmxdev->demux->open(dmxdev->demux) < 0)
1246 dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter));
1247 if (!dmxdev->filter)
1250 mutex_init(&dmxdev->mutex);
1251 spin_lock_init(&dmxdev->lock);
1252 for (i = 0; i < dmxdev->filternum; i++) {
1253 dmxdev->filter[i].dev = dmxdev;
1254 dmxdev->filter[i].buffer.data = NULL;
1255 dvb_dmxdev_filter_state_set(&dmxdev->filter[i],
1259 dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
1261 dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
1262 dmxdev, DVB_DEVICE_DVR);
1264 dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
1269 EXPORT_SYMBOL(dvb_dmxdev_init);
1271 void dvb_dmxdev_release(struct dmxdev *dmxdev)
1274 if (dmxdev->dvbdev->users > 1) {
1275 wait_event(dmxdev->dvbdev->wait_queue,
1276 dmxdev->dvbdev->users==1);
1278 if (dmxdev->dvr_dvbdev->users > 1) {
1279 wait_event(dmxdev->dvr_dvbdev->wait_queue,
1280 dmxdev->dvr_dvbdev->users==1);
1283 dvb_unregister_device(dmxdev->dvbdev);
1284 dvb_unregister_device(dmxdev->dvr_dvbdev);
1286 vfree(dmxdev->filter);
1287 dmxdev->filter = NULL;
1288 dmxdev->demux->close(dmxdev->demux);
1291 EXPORT_SYMBOL(dvb_dmxdev_release);