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(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)
361 struct dmxdev_filter *dmxdevfilter = filter->priv;
364 if (dmxdevfilter->buffer.error) {
365 wake_up(&dmxdevfilter->buffer.queue);
368 spin_lock(&dmxdevfilter->dev->lock);
369 if (dmxdevfilter->state != DMXDEV_STATE_GO) {
370 spin_unlock(&dmxdevfilter->dev->lock);
373 del_timer(&dmxdevfilter->timer);
374 dprintk("section callback %*ph\n", 6, buffer1);
375 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
377 if (ret == buffer1_len) {
378 ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
382 dmxdevfilter->buffer.error = ret;
383 if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
384 dmxdevfilter->state = DMXDEV_STATE_DONE;
385 spin_unlock(&dmxdevfilter->dev->lock);
386 wake_up(&dmxdevfilter->buffer.queue);
390 static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
391 const u8 *buffer2, size_t buffer2_len,
392 struct dmx_ts_feed *feed)
394 struct dmxdev_filter *dmxdevfilter = feed->priv;
395 struct dvb_ringbuffer *buffer;
398 spin_lock(&dmxdevfilter->dev->lock);
399 if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) {
400 spin_unlock(&dmxdevfilter->dev->lock);
404 if (dmxdevfilter->params.pes.output == DMX_OUT_TAP
405 || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP)
406 buffer = &dmxdevfilter->buffer;
408 buffer = &dmxdevfilter->dev->dvr_buffer;
410 spin_unlock(&dmxdevfilter->dev->lock);
411 wake_up(&buffer->queue);
414 ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
415 if (ret == buffer1_len)
416 ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
419 spin_unlock(&dmxdevfilter->dev->lock);
420 wake_up(&buffer->queue);
424 /* stop feed but only mark the specified filter as stopped (state set) */
425 static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
427 struct dmxdev_feed *feed;
429 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
431 switch (dmxdevfilter->type) {
432 case DMXDEV_TYPE_SEC:
433 del_timer(&dmxdevfilter->timer);
434 dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
436 case DMXDEV_TYPE_PES:
437 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next)
438 feed->ts->stop_filtering(feed->ts);
446 /* start feed associated with the specified filter */
447 static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
449 struct dmxdev_feed *feed;
452 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
454 switch (filter->type) {
455 case DMXDEV_TYPE_SEC:
456 return filter->feed.sec->start_filtering(filter->feed.sec);
457 case DMXDEV_TYPE_PES:
458 list_for_each_entry(feed, &filter->feed.ts, next) {
459 ret = feed->ts->start_filtering(feed->ts);
461 dvb_dmxdev_feed_stop(filter);
473 /* restart section feed if it has filters left associated with it,
474 otherwise release the feed */
475 static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
478 struct dmxdev *dmxdev = filter->dev;
479 u16 pid = filter->params.sec.pid;
481 for (i = 0; i < dmxdev->filternum; i++)
482 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
483 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
484 dmxdev->filter[i].params.sec.pid == pid) {
485 dvb_dmxdev_feed_start(&dmxdev->filter[i]);
489 filter->dev->demux->release_section_feed(dmxdev->demux,
495 static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
497 struct dmxdev_feed *feed;
498 struct dmx_demux *demux;
500 if (dmxdevfilter->state < DMXDEV_STATE_GO)
503 switch (dmxdevfilter->type) {
504 case DMXDEV_TYPE_SEC:
505 if (!dmxdevfilter->feed.sec)
507 dvb_dmxdev_feed_stop(dmxdevfilter);
508 if (dmxdevfilter->filter.sec)
509 dmxdevfilter->feed.sec->
510 release_filter(dmxdevfilter->feed.sec,
511 dmxdevfilter->filter.sec);
512 dvb_dmxdev_feed_restart(dmxdevfilter);
513 dmxdevfilter->feed.sec = NULL;
515 case DMXDEV_TYPE_PES:
516 dvb_dmxdev_feed_stop(dmxdevfilter);
517 demux = dmxdevfilter->dev->demux;
518 list_for_each_entry(feed, &dmxdevfilter->feed.ts, next) {
519 demux->release_ts_feed(demux, feed->ts);
524 if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED)
529 dvb_ringbuffer_flush(&dmxdevfilter->buffer);
533 static void dvb_dmxdev_delete_pids(struct dmxdev_filter *dmxdevfilter)
535 struct dmxdev_feed *feed, *tmp;
537 /* delete all PIDs */
538 list_for_each_entry_safe(feed, tmp, &dmxdevfilter->feed.ts, next) {
539 list_del(&feed->next);
543 BUG_ON(!list_empty(&dmxdevfilter->feed.ts));
546 static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
548 if (dmxdevfilter->state < DMXDEV_STATE_SET)
551 if (dmxdevfilter->type == DMXDEV_TYPE_PES)
552 dvb_dmxdev_delete_pids(dmxdevfilter);
554 dmxdevfilter->type = DMXDEV_TYPE_NONE;
555 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
559 static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
560 struct dmxdev_filter *filter,
561 struct dmxdev_feed *feed)
564 struct dmx_pes_filter_params *para = &filter->params.pes;
565 enum dmx_output otype;
568 enum dmx_ts_pes ts_pes;
569 struct dmx_ts_feed *tsfeed;
572 otype = para->output;
574 ts_pes = para->pes_type;
576 if (ts_pes < DMX_PES_OTHER)
577 ts_type = TS_DECODER;
581 if (otype == DMX_OUT_TS_TAP)
582 ts_type |= TS_PACKET;
583 else if (otype == DMX_OUT_TSDEMUX_TAP)
584 ts_type |= TS_PACKET | TS_DEMUX;
585 else if (otype == DMX_OUT_TAP)
586 ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY;
588 ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, &feed->ts,
589 dvb_dmxdev_ts_callback);
594 tsfeed->priv = filter;
596 ret = tsfeed->set(tsfeed, feed->pid, ts_type, ts_pes, timeout);
598 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
602 ret = tsfeed->start_filtering(tsfeed);
604 dmxdev->demux->release_ts_feed(dmxdev->demux, tsfeed);
611 static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
613 struct dmxdev *dmxdev = filter->dev;
614 struct dmxdev_feed *feed;
618 if (filter->state < DMXDEV_STATE_SET)
621 if (filter->state >= DMXDEV_STATE_GO)
622 dvb_dmxdev_filter_stop(filter);
624 if (!filter->buffer.data) {
625 mem = vmalloc(filter->buffer.size);
628 spin_lock_irq(&filter->dev->lock);
629 filter->buffer.data = mem;
630 spin_unlock_irq(&filter->dev->lock);
633 dvb_ringbuffer_flush(&filter->buffer);
635 switch (filter->type) {
636 case DMXDEV_TYPE_SEC:
638 struct dmx_sct_filter_params *para = &filter->params.sec;
639 struct dmx_section_filter **secfilter = &filter->filter.sec;
640 struct dmx_section_feed **secfeed = &filter->feed.sec;
646 /* find active filter/feed with same PID */
647 for (i = 0; i < dmxdev->filternum; i++) {
648 if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
649 dmxdev->filter[i].type == DMXDEV_TYPE_SEC &&
650 dmxdev->filter[i].params.sec.pid == para->pid) {
651 *secfeed = dmxdev->filter[i].feed.sec;
656 /* if no feed found, try to allocate new one */
658 ret = dmxdev->demux->allocate_section_feed(dmxdev->demux,
660 dvb_dmxdev_section_callback);
662 pr_err("DVB (%s): could not alloc feed\n",
667 ret = (*secfeed)->set(*secfeed, para->pid,
668 (para->flags & DMX_CHECK_CRC) ? 1 : 0);
670 pr_err("DVB (%s): could not set feed\n",
672 dvb_dmxdev_feed_restart(filter);
676 dvb_dmxdev_feed_stop(filter);
679 ret = (*secfeed)->allocate_filter(*secfeed, secfilter);
681 dvb_dmxdev_feed_restart(filter);
682 filter->feed.sec->start_filtering(*secfeed);
683 dprintk("could not get filter\n");
687 (*secfilter)->priv = filter;
689 memcpy(&((*secfilter)->filter_value[3]),
690 &(para->filter.filter[1]), DMX_FILTER_SIZE - 1);
691 memcpy(&(*secfilter)->filter_mask[3],
692 ¶->filter.mask[1], DMX_FILTER_SIZE - 1);
693 memcpy(&(*secfilter)->filter_mode[3],
694 ¶->filter.mode[1], DMX_FILTER_SIZE - 1);
696 (*secfilter)->filter_value[0] = para->filter.filter[0];
697 (*secfilter)->filter_mask[0] = para->filter.mask[0];
698 (*secfilter)->filter_mode[0] = para->filter.mode[0];
699 (*secfilter)->filter_mask[1] = 0;
700 (*secfilter)->filter_mask[2] = 0;
704 ret = filter->feed.sec->start_filtering(filter->feed.sec);
708 dvb_dmxdev_filter_timer(filter);
711 case DMXDEV_TYPE_PES:
712 list_for_each_entry(feed, &filter->feed.ts, next) {
713 ret = dvb_dmxdev_start_feed(dmxdev, filter, feed);
715 dvb_dmxdev_filter_stop(filter);
724 dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
728 static int dvb_demux_open(struct inode *inode, struct file *file)
730 struct dvb_device *dvbdev = file->private_data;
731 struct dmxdev *dmxdev = dvbdev->priv;
733 struct dmxdev_filter *dmxdevfilter;
738 if (mutex_lock_interruptible(&dmxdev->mutex))
742 mutex_unlock(&dmxdev->mutex);
746 for (i = 0; i < dmxdev->filternum; i++)
747 if (dmxdev->filter[i].state == DMXDEV_STATE_FREE)
750 if (i == dmxdev->filternum) {
751 mutex_unlock(&dmxdev->mutex);
755 dmxdevfilter = &dmxdev->filter[i];
756 mutex_init(&dmxdevfilter->mutex);
757 file->private_data = dmxdevfilter;
759 dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
760 dmxdevfilter->type = DMXDEV_TYPE_NONE;
761 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
762 init_timer(&dmxdevfilter->timer);
766 mutex_unlock(&dmxdev->mutex);
770 static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
771 struct dmxdev_filter *dmxdevfilter)
773 mutex_lock(&dmxdev->mutex);
774 mutex_lock(&dmxdevfilter->mutex);
776 dvb_dmxdev_filter_stop(dmxdevfilter);
777 dvb_dmxdev_filter_reset(dmxdevfilter);
779 if (dmxdevfilter->buffer.data) {
780 void *mem = dmxdevfilter->buffer.data;
782 spin_lock_irq(&dmxdev->lock);
783 dmxdevfilter->buffer.data = NULL;
784 spin_unlock_irq(&dmxdev->lock);
788 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
789 wake_up(&dmxdevfilter->buffer.queue);
790 mutex_unlock(&dmxdevfilter->mutex);
791 mutex_unlock(&dmxdev->mutex);
795 static inline void invert_mode(struct dmx_filter *filter)
799 for (i = 0; i < DMX_FILTER_SIZE; i++)
800 filter->mode[i] ^= 0xff;
803 static int dvb_dmxdev_add_pid(struct dmxdev *dmxdev,
804 struct dmxdev_filter *filter, u16 pid)
806 struct dmxdev_feed *feed;
808 if ((filter->type != DMXDEV_TYPE_PES) ||
809 (filter->state < DMXDEV_STATE_SET))
812 /* only TS packet filters may have multiple PIDs */
813 if ((filter->params.pes.output != DMX_OUT_TSDEMUX_TAP) &&
814 (!list_empty(&filter->feed.ts)))
817 feed = kzalloc(sizeof(struct dmxdev_feed), GFP_KERNEL);
822 list_add(&feed->next, &filter->feed.ts);
824 if (filter->state >= DMXDEV_STATE_GO)
825 return dvb_dmxdev_start_feed(dmxdev, filter, feed);
830 static int dvb_dmxdev_remove_pid(struct dmxdev *dmxdev,
831 struct dmxdev_filter *filter, u16 pid)
833 struct dmxdev_feed *feed, *tmp;
835 if ((filter->type != DMXDEV_TYPE_PES) ||
836 (filter->state < DMXDEV_STATE_SET))
839 list_for_each_entry_safe(feed, tmp, &filter->feed.ts, next) {
840 if ((feed->pid == pid) && (feed->ts != NULL)) {
841 feed->ts->stop_filtering(feed->ts);
842 filter->dev->demux->release_ts_feed(filter->dev->demux,
844 list_del(&feed->next);
852 static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
853 struct dmxdev_filter *dmxdevfilter,
854 struct dmx_sct_filter_params *params)
856 dprintk("%s: PID=0x%04x, flags=%02x, timeout=%d\n",
857 __func__, params->pid, params->flags, params->timeout);
859 dvb_dmxdev_filter_stop(dmxdevfilter);
861 dmxdevfilter->type = DMXDEV_TYPE_SEC;
862 memcpy(&dmxdevfilter->params.sec,
863 params, sizeof(struct dmx_sct_filter_params));
864 invert_mode(&dmxdevfilter->params.sec.filter);
865 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
867 if (params->flags & DMX_IMMEDIATE_START)
868 return dvb_dmxdev_filter_start(dmxdevfilter);
873 static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
874 struct dmxdev_filter *dmxdevfilter,
875 struct dmx_pes_filter_params *params)
879 dvb_dmxdev_filter_stop(dmxdevfilter);
880 dvb_dmxdev_filter_reset(dmxdevfilter);
882 if ((unsigned int)params->pes_type > DMX_PES_OTHER)
885 dmxdevfilter->type = DMXDEV_TYPE_PES;
886 memcpy(&dmxdevfilter->params, params,
887 sizeof(struct dmx_pes_filter_params));
888 INIT_LIST_HEAD(&dmxdevfilter->feed.ts);
890 dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
892 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter,
893 dmxdevfilter->params.pes.pid);
897 if (params->flags & DMX_IMMEDIATE_START)
898 return dvb_dmxdev_filter_start(dmxdevfilter);
903 static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
904 struct file *file, char __user *buf,
905 size_t count, loff_t *ppos)
910 if (dfil->todo <= 0) {
911 hcount = 3 + dfil->todo;
914 result = dvb_dmxdev_buffer_read(&dfil->buffer,
915 file->f_flags & O_NONBLOCK,
921 if (copy_from_user(dfil->secheader - dfil->todo, buf, result))
926 dfil->todo -= result;
929 dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff;
933 if (count > dfil->todo)
935 result = dvb_dmxdev_buffer_read(&dfil->buffer,
936 file->f_flags & O_NONBLOCK,
940 dfil->todo -= result;
941 return (result + done);
945 dvb_demux_read(struct file *file, char __user *buf, size_t count,
948 struct dmxdev_filter *dmxdevfilter = file->private_data;
951 if (mutex_lock_interruptible(&dmxdevfilter->mutex))
954 if (dmxdevfilter->type == DMXDEV_TYPE_SEC)
955 ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
957 ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
958 file->f_flags & O_NONBLOCK,
961 mutex_unlock(&dmxdevfilter->mutex);
965 static int dvb_demux_do_ioctl(struct file *file,
966 unsigned int cmd, void *parg)
968 struct dmxdev_filter *dmxdevfilter = file->private_data;
969 struct dmxdev *dmxdev = dmxdevfilter->dev;
970 unsigned long arg = (unsigned long)parg;
973 if (mutex_lock_interruptible(&dmxdev->mutex))
978 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
979 mutex_unlock(&dmxdev->mutex);
982 if (dmxdevfilter->state < DMXDEV_STATE_SET)
985 ret = dvb_dmxdev_filter_start(dmxdevfilter);
986 mutex_unlock(&dmxdevfilter->mutex);
990 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
991 mutex_unlock(&dmxdev->mutex);
994 ret = dvb_dmxdev_filter_stop(dmxdevfilter);
995 mutex_unlock(&dmxdevfilter->mutex);
999 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1000 mutex_unlock(&dmxdev->mutex);
1001 return -ERESTARTSYS;
1003 ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg);
1004 mutex_unlock(&dmxdevfilter->mutex);
1007 case DMX_SET_PES_FILTER:
1008 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1009 mutex_unlock(&dmxdev->mutex);
1010 return -ERESTARTSYS;
1012 ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg);
1013 mutex_unlock(&dmxdevfilter->mutex);
1016 case DMX_SET_BUFFER_SIZE:
1017 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1018 mutex_unlock(&dmxdev->mutex);
1019 return -ERESTARTSYS;
1021 ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
1022 mutex_unlock(&dmxdevfilter->mutex);
1025 case DMX_GET_PES_PIDS:
1026 if (!dmxdev->demux->get_pes_pids) {
1030 dmxdev->demux->get_pes_pids(dmxdev->demux, parg);
1034 if (!dmxdev->demux->get_stc) {
1038 ret = dmxdev->demux->get_stc(dmxdev->demux,
1039 ((struct dmx_stc *)parg)->num,
1040 &((struct dmx_stc *)parg)->stc,
1041 &((struct dmx_stc *)parg)->base);
1045 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1049 ret = dvb_dmxdev_add_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1050 mutex_unlock(&dmxdevfilter->mutex);
1053 case DMX_REMOVE_PID:
1054 if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
1058 ret = dvb_dmxdev_remove_pid(dmxdev, dmxdevfilter, *(u16 *)parg);
1059 mutex_unlock(&dmxdevfilter->mutex);
1066 mutex_unlock(&dmxdev->mutex);
1070 static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
1073 return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
1076 static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
1078 struct dmxdev_filter *dmxdevfilter = file->private_data;
1079 unsigned int mask = 0;
1081 if ((!dmxdevfilter) || dmxdevfilter->dev->exit)
1084 poll_wait(file, &dmxdevfilter->buffer.queue, wait);
1086 if (dmxdevfilter->state != DMXDEV_STATE_GO &&
1087 dmxdevfilter->state != DMXDEV_STATE_DONE &&
1088 dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
1091 if (dmxdevfilter->buffer.error)
1092 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1094 if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer))
1095 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1100 static int dvb_demux_release(struct inode *inode, struct file *file)
1102 struct dmxdev_filter *dmxdevfilter = file->private_data;
1103 struct dmxdev *dmxdev = dmxdevfilter->dev;
1107 ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
1109 mutex_lock(&dmxdev->mutex);
1110 dmxdev->dvbdev->users--;
1111 if (dmxdev->dvbdev->users == 1 && dmxdev->exit == 1) {
1112 mutex_unlock(&dmxdev->mutex);
1113 wake_up(&dmxdev->dvbdev->wait_queue);
1115 mutex_unlock(&dmxdev->mutex);
1120 static const struct file_operations dvb_demux_fops = {
1121 .owner = THIS_MODULE,
1122 .read = dvb_demux_read,
1123 .unlocked_ioctl = dvb_demux_ioctl,
1124 .open = dvb_demux_open,
1125 .release = dvb_demux_release,
1126 .poll = dvb_demux_poll,
1127 .llseek = default_llseek,
1130 static const struct dvb_device dvbdev_demux = {
1134 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
1135 .name = "dvb-demux",
1137 .fops = &dvb_demux_fops
1140 static int dvb_dvr_do_ioctl(struct file *file,
1141 unsigned int cmd, void *parg)
1143 struct dvb_device *dvbdev = file->private_data;
1144 struct dmxdev *dmxdev = dvbdev->priv;
1145 unsigned long arg = (unsigned long)parg;
1148 if (mutex_lock_interruptible(&dmxdev->mutex))
1149 return -ERESTARTSYS;
1152 case DMX_SET_BUFFER_SIZE:
1153 ret = dvb_dvr_set_buffer_size(dmxdev, arg);
1160 mutex_unlock(&dmxdev->mutex);
1164 static long dvb_dvr_ioctl(struct file *file,
1165 unsigned int cmd, unsigned long arg)
1167 return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
1170 static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
1172 struct dvb_device *dvbdev = file->private_data;
1173 struct dmxdev *dmxdev = dvbdev->priv;
1174 unsigned int mask = 0;
1176 dprintk("%s\n", __func__);
1181 poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
1183 if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
1184 if (dmxdev->dvr_buffer.error)
1185 mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
1187 if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer))
1188 mask |= (POLLIN | POLLRDNORM | POLLPRI);
1190 mask |= (POLLOUT | POLLWRNORM | POLLPRI);
1195 static const struct file_operations dvb_dvr_fops = {
1196 .owner = THIS_MODULE,
1197 .read = dvb_dvr_read,
1198 .write = dvb_dvr_write,
1199 .unlocked_ioctl = dvb_dvr_ioctl,
1200 .open = dvb_dvr_open,
1201 .release = dvb_dvr_release,
1202 .poll = dvb_dvr_poll,
1203 .llseek = default_llseek,
1206 static const struct dvb_device dvbdev_dvr = {
1210 #if defined(CONFIG_MEDIA_CONTROLLER_DVB)
1213 .fops = &dvb_dvr_fops
1215 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
1219 if (dmxdev->demux->open(dmxdev->demux) < 0)
1222 dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter));
1223 if (!dmxdev->filter)
1226 mutex_init(&dmxdev->mutex);
1227 spin_lock_init(&dmxdev->lock);
1228 for (i = 0; i < dmxdev->filternum; i++) {
1229 dmxdev->filter[i].dev = dmxdev;
1230 dmxdev->filter[i].buffer.data = NULL;
1231 dvb_dmxdev_filter_state_set(&dmxdev->filter[i],
1235 ret = dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
1236 DVB_DEVICE_DEMUX, dmxdev->filternum);
1238 goto err_register_dvbdev;
1240 ret = dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
1241 dmxdev, DVB_DEVICE_DVR, dmxdev->filternum);
1243 goto err_register_dvr_dvbdev;
1245 dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);
1249 err_register_dvr_dvbdev:
1250 dvb_unregister_device(dmxdev->dvbdev);
1251 err_register_dvbdev:
1252 vfree(dmxdev->filter);
1253 dmxdev->filter = NULL;
1257 EXPORT_SYMBOL(dvb_dmxdev_init);
1259 void dvb_dmxdev_release(struct dmxdev *dmxdev)
1261 mutex_lock(&dmxdev->mutex);
1263 mutex_unlock(&dmxdev->mutex);
1265 if (dmxdev->dvbdev->users > 1) {
1266 wait_event(dmxdev->dvbdev->wait_queue,
1267 dmxdev->dvbdev->users == 1);
1269 if (dmxdev->dvr_dvbdev->users > 1) {
1270 wait_event(dmxdev->dvr_dvbdev->wait_queue,
1271 dmxdev->dvr_dvbdev->users == 1);
1274 dvb_unregister_device(dmxdev->dvbdev);
1275 dvb_unregister_device(dmxdev->dvr_dvbdev);
1277 vfree(dmxdev->filter);
1278 dmxdev->filter = NULL;
1279 dmxdev->demux->close(dmxdev->demux);
1282 EXPORT_SYMBOL(dvb_dmxdev_release);