Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1137 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-core/dmxdev.c b/drivers/media/dvb/dvb-core/dmxdev.c
new file mode 100644
index 00000000000..1863f1dfb00
--- /dev/null
+++ b/drivers/media/dvb/dvb-core/dmxdev.c
@@ -0,0 +1,1137 @@
+/*
+ * dmxdev.c - DVB demultiplexer device
+ *
+ * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
+ *		  & Marcus Metzler <marcus@convergence.de>
+		      for convergence integrated media GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/sched.h>
+#include <linux/poll.h>
+#include <linux/ioctl.h>
+#include <linux/wait.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include "dmxdev.h"
+
+static int debug;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+#define dprintk	if (debug) printk
+
+static inline struct dmxdev_filter *
+dvb_dmxdev_file_to_filter(struct file *file)
+{
+	return (struct dmxdev_filter *) file->private_data;
+}
+
+static inline void dvb_dmxdev_buffer_init(struct dmxdev_buffer *buffer)
+{
+	buffer->data=NULL;
+	buffer->size=8192;
+	buffer->pread=0;
+	buffer->pwrite=0;
+	buffer->error=0;
+	init_waitqueue_head(&buffer->queue);
+}
+
+static inline int dvb_dmxdev_buffer_write(struct dmxdev_buffer *buf, const u8 *src, int len)
+{
+	int split;
+	int free;
+	int todo;
+
+	if (!len)
+		return 0;
+	if (!buf->data)
+		return 0;
+
+	free=buf->pread-buf->pwrite;
+	split=0;
+	if (free<=0) {
+		free+=buf->size;
+		split=buf->size-buf->pwrite;
+	}
+	if (len>=free) {
+		dprintk("dmxdev: buffer overflow\n");
+		return -1;
+	}
+	if (split>=len)
+		split=0;
+	todo=len;
+	if (split) {
+		memcpy(buf->data + buf->pwrite, src, split);
+		todo-=split;
+		buf->pwrite=0;
+	}
+	memcpy(buf->data + buf->pwrite, src+split, todo);
+	buf->pwrite=(buf->pwrite+todo)%buf->size;
+	return len;
+}
+
+static ssize_t dvb_dmxdev_buffer_read(struct dmxdev_buffer *src,
+		int non_blocking, char __user *buf, size_t count, loff_t *ppos)
+{
+	unsigned long todo=count;
+	int split, avail, error;
+
+	if (!src->data)
+		return 0;
+
+	if ((error=src->error)) {
+		src->pwrite=src->pread;
+		src->error=0;
+		return error;
+	}
+
+	if (non_blocking && (src->pwrite==src->pread))
+		return -EWOULDBLOCK;
+
+	while (todo>0) {
+		if (non_blocking && (src->pwrite==src->pread))
+			return (count-todo) ? (count-todo) : -EWOULDBLOCK;
+
+		if (wait_event_interruptible(src->queue,
+					     (src->pread!=src->pwrite) ||
+					     (src->error))<0)
+			return count-todo;
+
+		if ((error=src->error)) {
+			src->pwrite=src->pread;
+			src->error=0;
+			return error;
+		}
+
+		split=src->size;
+		avail=src->pwrite - src->pread;
+		if (avail<0) {
+			avail+=src->size;
+			split=src->size - src->pread;
+		}
+		if (avail>todo)
+			avail=todo;
+		if (split<avail) {
+			if (copy_to_user(buf, src->data+src->pread, split))
+				  return -EFAULT;
+			buf+=split;
+			src->pread=0;
+			todo-=split;
+			avail-=split;
+		}
+		if (avail) {
+			if (copy_to_user(buf, src->data+src->pread, avail))
+				return -EFAULT;
+			src->pread = (src->pread + avail) % src->size;
+			todo-=avail;
+			buf+=avail;
+		}
+	}
+	return count;
+}
+
+static struct dmx_frontend * get_fe(struct dmx_demux *demux, int type)
+{
+	struct list_head *head, *pos;
+
+	head=demux->get_frontends(demux);
+	if (!head)
+		return NULL;
+	list_for_each(pos, head)
+		if (DMX_FE_ENTRY(pos)->source==type)
+			return DMX_FE_ENTRY(pos);
+
+	return NULL;
+}
+
+static inline void dvb_dmxdev_dvr_state_set(struct dmxdev_dvr *dmxdevdvr, int state)
+{
+	spin_lock_irq(&dmxdevdvr->dev->lock);
+	dmxdevdvr->state=state;
+	spin_unlock_irq(&dmxdevdvr->dev->lock);
+}
+
+static int dvb_dvr_open(struct inode *inode, struct file *file)
+{
+	struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
+	struct dmxdev *dmxdev=(struct dmxdev *) dvbdev->priv;
+	struct dmx_frontend *front;
+
+	dprintk ("function : %s\n", __FUNCTION__);
+
+	if (down_interruptible (&dmxdev->mutex))
+		return -ERESTARTSYS;
+
+	if ((file->f_flags&O_ACCMODE)==O_RDWR) {
+		if (!(dmxdev->capabilities&DMXDEV_CAP_DUPLEX)) {
+			up(&dmxdev->mutex);
+			return -EOPNOTSUPP;
+		}
+	}
+
+	if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
+	      dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
+	      dmxdev->dvr_buffer.size=DVR_BUFFER_SIZE;
+	      dmxdev->dvr_buffer.data=vmalloc(DVR_BUFFER_SIZE);
+	      if (!dmxdev->dvr_buffer.data) {
+		      up(&dmxdev->mutex);
+		      return -ENOMEM;
+	      }
+	}
+
+	if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
+		dmxdev->dvr_orig_fe=dmxdev->demux->frontend;
+
+		if (!dmxdev->demux->write) {
+			up(&dmxdev->mutex);
+			return -EOPNOTSUPP;
+		}
+
+		front=get_fe(dmxdev->demux, DMX_MEMORY_FE);
+
+		if (!front) {
+			up(&dmxdev->mutex);
+			return -EINVAL;
+		}
+		dmxdev->demux->disconnect_frontend(dmxdev->demux);
+		dmxdev->demux->connect_frontend(dmxdev->demux, front);
+	}
+	up(&dmxdev->mutex);
+	return 0;
+}
+
+static int dvb_dvr_release(struct inode *inode, struct file *file)
+{
+	struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
+	struct dmxdev *dmxdev=(struct dmxdev *) dvbdev->priv;
+
+	if (down_interruptible (&dmxdev->mutex))
+		return -ERESTARTSYS;
+
+	if ((file->f_flags&O_ACCMODE)==O_WRONLY) {
+		dmxdev->demux->disconnect_frontend(dmxdev->demux);
+		dmxdev->demux->connect_frontend(dmxdev->demux,
+						dmxdev->dvr_orig_fe);
+	}
+	if ((file->f_flags&O_ACCMODE)==O_RDONLY) {
+		if (dmxdev->dvr_buffer.data) {
+			void *mem=dmxdev->dvr_buffer.data;
+			mb();
+			spin_lock_irq(&dmxdev->lock);
+			dmxdev->dvr_buffer.data=NULL;
+			spin_unlock_irq(&dmxdev->lock);
+			vfree(mem);
+		}
+	}
+	up(&dmxdev->mutex);
+	return 0;
+}
+
+static ssize_t dvb_dvr_write(struct file *file, const char __user *buf,
+		size_t count, loff_t *ppos)
+{
+	struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
+	struct dmxdev *dmxdev=(struct dmxdev *) dvbdev->priv;
+	int ret;
+
+	if (!dmxdev->demux->write)
+		return -EOPNOTSUPP;
+	if ((file->f_flags&O_ACCMODE)!=O_WRONLY)
+		return -EINVAL;
+	if (down_interruptible (&dmxdev->mutex))
+		return -ERESTARTSYS;
+	ret=dmxdev->demux->write(dmxdev->demux, buf, count);
+	up(&dmxdev->mutex);
+	return ret;
+}
+
+static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count,
+		loff_t *ppos)
+{
+	struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
+	struct dmxdev *dmxdev=(struct dmxdev *) dvbdev->priv;
+	int ret;
+
+	//down(&dmxdev->mutex);
+	ret= dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer,
+			      file->f_flags&O_NONBLOCK,
+			      buf, count, ppos);
+	//up(&dmxdev->mutex);
+	return ret;
+}
+
+static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter *dmxdevfilter, int state)
+{
+	spin_lock_irq(&dmxdevfilter->dev->lock);
+	dmxdevfilter->state=state;
+	spin_unlock_irq(&dmxdevfilter->dev->lock);
+}
+
+static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, unsigned long size)
+{
+	struct dmxdev_buffer *buf=&dmxdevfilter->buffer;
+	void *mem;
+
+	if (buf->size==size)
+		return 0;
+	if (dmxdevfilter->state>=DMXDEV_STATE_GO)
+		return -EBUSY;
+	spin_lock_irq(&dmxdevfilter->dev->lock);
+	mem=buf->data;
+	buf->data=NULL;
+	buf->size=size;
+	buf->pwrite=buf->pread=0;
+	spin_unlock_irq(&dmxdevfilter->dev->lock);
+	vfree(mem);
+
+	if (buf->size) {
+		mem=vmalloc(dmxdevfilter->buffer.size);
+		if (!mem)
+			return -ENOMEM;
+		spin_lock_irq(&dmxdevfilter->dev->lock);
+		buf->data=mem;
+		spin_unlock_irq(&dmxdevfilter->dev->lock);
+	}
+	return 0;
+}
+
+static void dvb_dmxdev_filter_timeout(unsigned long data)
+{
+	struct dmxdev_filter *dmxdevfilter=(struct dmxdev_filter *)data;
+
+	dmxdevfilter->buffer.error=-ETIMEDOUT;
+	spin_lock_irq(&dmxdevfilter->dev->lock);
+	dmxdevfilter->state=DMXDEV_STATE_TIMEDOUT;
+	spin_unlock_irq(&dmxdevfilter->dev->lock);
+	wake_up(&dmxdevfilter->buffer.queue);
+}
+
+static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
+{
+	struct dmx_sct_filter_params *para=&dmxdevfilter->params.sec;
+
+	del_timer(&dmxdevfilter->timer);
+	if (para->timeout) {
+		dmxdevfilter->timer.function=dvb_dmxdev_filter_timeout;
+		dmxdevfilter->timer.data=(unsigned long) dmxdevfilter;
+		dmxdevfilter->timer.expires=jiffies+1+(HZ/2+HZ*para->timeout)/1000;
+		add_timer(&dmxdevfilter->timer);
+	}
+}
+
+static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
+			    const u8 *buffer2, size_t buffer2_len,
+			    struct dmx_section_filter *filter, enum dmx_success success)
+{
+	struct dmxdev_filter *dmxdevfilter=(struct dmxdev_filter *) filter->priv;
+	int ret;
+
+	if (dmxdevfilter->buffer.error) {
+		wake_up(&dmxdevfilter->buffer.queue);
+		return 0;
+	}
+	spin_lock(&dmxdevfilter->dev->lock);
+	if (dmxdevfilter->state!=DMXDEV_STATE_GO) {
+		spin_unlock(&dmxdevfilter->dev->lock);
+		return 0;
+	}
+	del_timer(&dmxdevfilter->timer);
+	dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n",
+		buffer1[0], buffer1[1],
+		buffer1[2], buffer1[3],
+		buffer1[4], buffer1[5]);
+	ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, buffer1_len);
+	if (ret==buffer1_len) {
+		ret=dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, buffer2_len);
+	}
+	if (ret<0) {
+		dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread;
+		dmxdevfilter->buffer.error=-EOVERFLOW;
+	}
+	if (dmxdevfilter->params.sec.flags&DMX_ONESHOT)
+		dmxdevfilter->state=DMXDEV_STATE_DONE;
+	spin_unlock(&dmxdevfilter->dev->lock);
+	wake_up(&dmxdevfilter->buffer.queue);
+	return 0;
+}
+
+static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
+		       const u8 *buffer2, size_t buffer2_len,
+		       struct dmx_ts_feed *feed, enum dmx_success success)
+{
+	struct dmxdev_filter *dmxdevfilter=(struct dmxdev_filter *) feed->priv;
+	struct dmxdev_buffer *buffer;
+	int ret;
+
+	spin_lock(&dmxdevfilter->dev->lock);
+	if (dmxdevfilter->params.pes.output==DMX_OUT_DECODER) {
+		spin_unlock(&dmxdevfilter->dev->lock);
+		return 0;
+	}
+
+	if (dmxdevfilter->params.pes.output==DMX_OUT_TAP)
+		buffer=&dmxdevfilter->buffer;
+	else
+		buffer=&dmxdevfilter->dev->dvr_buffer;
+	if (buffer->error) {
+		spin_unlock(&dmxdevfilter->dev->lock);
+		wake_up(&buffer->queue);
+		return 0;
+	}
+	ret=dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
+	if (ret==buffer1_len)
+		ret=dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
+	if (ret<0) {
+		buffer->pwrite=buffer->pread;
+		buffer->error=-EOVERFLOW;
+	}
+	spin_unlock(&dmxdevfilter->dev->lock);
+	wake_up(&buffer->queue);
+	return 0;
+}
+
+
+/* stop feed but only mark the specified filter as stopped (state set) */
+
+static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter)
+{
+	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
+
+	switch (dmxdevfilter->type) {
+	case DMXDEV_TYPE_SEC:
+		del_timer(&dmxdevfilter->timer);
+		dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec);
+		break;
+	case DMXDEV_TYPE_PES:
+		dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+
+/* start feed associated with the specified filter */
+
+static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter)
+{
+	dvb_dmxdev_filter_state_set (filter, DMXDEV_STATE_GO);
+
+	switch (filter->type) {
+	case DMXDEV_TYPE_SEC:
+		return filter->feed.sec->start_filtering(filter->feed.sec);
+		break;
+	case DMXDEV_TYPE_PES:
+		return filter->feed.ts->start_filtering(filter->feed.ts);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+
+/* restart section feed if it has filters left associated with it,
+   otherwise release the feed */
+
+static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter)
+{
+	int i;
+	struct dmxdev *dmxdev = filter->dev;
+	u16 pid = filter->params.sec.pid;
+
+	for (i=0; i<dmxdev->filternum; i++)
+		if (dmxdev->filter[i].state>=DMXDEV_STATE_GO &&
+		    dmxdev->filter[i].type==DMXDEV_TYPE_SEC &&
+		    dmxdev->filter[i].pid==pid) {
+			dvb_dmxdev_feed_start(&dmxdev->filter[i]);
+			return 0;
+		}
+
+	filter->dev->demux->release_section_feed(dmxdev->demux, filter->feed.sec);
+
+	return 0;
+}
+
+static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter)
+{
+	if (dmxdevfilter->state<DMXDEV_STATE_GO)
+		return 0;
+
+	switch (dmxdevfilter->type) {
+	case DMXDEV_TYPE_SEC:
+		if (!dmxdevfilter->feed.sec)
+			break;
+		dvb_dmxdev_feed_stop(dmxdevfilter);
+		if (dmxdevfilter->filter.sec)
+			dmxdevfilter->feed.sec->
+				release_filter(dmxdevfilter->feed.sec,
+					       dmxdevfilter->filter.sec);
+		dvb_dmxdev_feed_restart(dmxdevfilter);
+		dmxdevfilter->feed.sec=NULL;
+		break;
+	case DMXDEV_TYPE_PES:
+		if (!dmxdevfilter->feed.ts)
+			break;
+		dvb_dmxdev_feed_stop(dmxdevfilter);
+		dmxdevfilter->dev->demux->
+			release_ts_feed(dmxdevfilter->dev->demux,
+					dmxdevfilter->feed.ts);
+		dmxdevfilter->feed.ts=NULL;
+		break;
+	default:
+		if (dmxdevfilter->state==DMXDEV_STATE_ALLOCATED)
+			return 0;
+		return -EINVAL;
+	}
+	dmxdevfilter->buffer.pwrite=dmxdevfilter->buffer.pread=0;
+	return 0;
+}
+
+static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter)
+{
+	if (dmxdevfilter->state<DMXDEV_STATE_SET)
+		return 0;
+
+	dmxdevfilter->type=DMXDEV_TYPE_NONE;
+	dmxdevfilter->pid=0xffff;
+	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
+	return 0;
+}
+
+static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter)
+{
+	struct dmxdev *dmxdev = filter->dev;
+	void *mem;
+	int ret, i;
+
+	if (filter->state < DMXDEV_STATE_SET)
+		return -EINVAL;
+
+	if (filter->state >= DMXDEV_STATE_GO)
+		dvb_dmxdev_filter_stop(filter);
+
+	if (!(mem = filter->buffer.data)) {
+		mem = vmalloc(filter->buffer.size);
+		spin_lock_irq(&filter->dev->lock);
+		filter->buffer.data=mem;
+		spin_unlock_irq(&filter->dev->lock);
+		if (!filter->buffer.data)
+			return -ENOMEM;
+	}
+
+	filter->buffer.pwrite = filter->buffer.pread = 0;
+
+	switch (filter->type) {
+	case DMXDEV_TYPE_SEC:
+	{
+		struct dmx_sct_filter_params *para=&filter->params.sec;
+		struct dmx_section_filter **secfilter=&filter->filter.sec;
+		struct dmx_section_feed **secfeed=&filter->feed.sec;
+
+		*secfilter=NULL;
+		*secfeed=NULL;
+
+		/* find active filter/feed with same PID */
+		for (i=0; i<dmxdev->filternum; i++) {
+			if (dmxdev->filter[i].state >= DMXDEV_STATE_GO &&
+			    dmxdev->filter[i].pid == para->pid &&
+			    dmxdev->filter[i].type == DMXDEV_TYPE_SEC) {
+				*secfeed = dmxdev->filter[i].feed.sec;
+				break;
+			}
+		}
+
+		/* if no feed found, try to allocate new one */
+		if (!*secfeed) {
+			ret=dmxdev->demux->allocate_section_feed(dmxdev->demux,
+								 secfeed,
+						   dvb_dmxdev_section_callback);
+			if (ret<0) {
+				printk ("DVB (%s): could not alloc feed\n",
+					__FUNCTION__);
+				return ret;
+			}
+
+			ret=(*secfeed)->set(*secfeed, para->pid, 32768, 0,
+					    (para->flags & DMX_CHECK_CRC) ? 1 : 0);
+
+			if (ret<0) {
+				printk ("DVB (%s): could not set feed\n",
+					__FUNCTION__);
+				dvb_dmxdev_feed_restart(filter);
+				return ret;
+			}
+		} else {
+			dvb_dmxdev_feed_stop(filter);
+		}
+
+		ret=(*secfeed)->allocate_filter(*secfeed, secfilter);
+
+		if (ret < 0) {
+			dvb_dmxdev_feed_restart(filter);
+			filter->feed.sec->start_filtering(*secfeed);
+			dprintk ("could not get filter\n");
+			return ret;
+		}
+
+		(*secfilter)->priv = filter;
+
+		memcpy(&((*secfilter)->filter_value[3]),
+		       &(para->filter.filter[1]), DMX_FILTER_SIZE-1);
+		memcpy(&(*secfilter)->filter_mask[3],
+		       &para->filter.mask[1], DMX_FILTER_SIZE-1);
+		memcpy(&(*secfilter)->filter_mode[3],
+		       &para->filter.mode[1], DMX_FILTER_SIZE-1);
+
+		(*secfilter)->filter_value[0]=para->filter.filter[0];
+		(*secfilter)->filter_mask[0]=para->filter.mask[0];
+		(*secfilter)->filter_mode[0]=para->filter.mode[0];
+		(*secfilter)->filter_mask[1]=0;
+		(*secfilter)->filter_mask[2]=0;
+
+		filter->todo = 0;
+
+		ret = filter->feed.sec->start_filtering (filter->feed.sec);
+
+		if (ret < 0)
+			return ret;
+
+		dvb_dmxdev_filter_timer(filter);
+		break;
+	}
+
+	case DMXDEV_TYPE_PES:
+	{
+		struct timespec timeout = { 0 };
+		struct dmx_pes_filter_params *para = &filter->params.pes;
+		dmx_output_t otype;
+		int ret;
+		int ts_type;
+		enum dmx_ts_pes ts_pes;
+		struct dmx_ts_feed **tsfeed = &filter->feed.ts;
+
+		filter->feed.ts = NULL;
+		otype=para->output;
+
+		ts_pes=(enum dmx_ts_pes) para->pes_type;
+
+		if (ts_pes<DMX_PES_OTHER)
+			ts_type=TS_DECODER;
+		else
+			ts_type=0;
+
+		if (otype == DMX_OUT_TS_TAP)
+			ts_type |= TS_PACKET;
+
+		if (otype == DMX_OUT_TAP)
+			ts_type |= TS_PAYLOAD_ONLY|TS_PACKET;
+
+		ret=dmxdev->demux->allocate_ts_feed(dmxdev->demux,
+						    tsfeed,
+						    dvb_dmxdev_ts_callback);
+		if (ret<0)
+			return ret;
+
+		(*tsfeed)->priv = (void *) filter;
+
+		ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes,
+				     188, 32768, 0, timeout);
+
+		if (ret < 0) {
+			dmxdev->demux->release_ts_feed(dmxdev->demux, *tsfeed);
+			return ret;
+		}
+
+		ret = filter->feed.ts->start_filtering(filter->feed.ts);
+
+		if (ret < 0)
+			return ret;
+
+		break;
+	}
+	default:
+		return -EINVAL;
+	}
+
+	dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO);
+	return 0;
+}
+
+static int dvb_demux_open(struct inode *inode, struct file *file)
+{
+	struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
+	struct dmxdev *dmxdev=(struct dmxdev *) dvbdev->priv;
+	int i;
+	struct dmxdev_filter *dmxdevfilter;
+
+	if (!dmxdev->filter)
+		return -EINVAL;
+
+	if (down_interruptible(&dmxdev->mutex))
+		return -ERESTARTSYS;
+
+	for (i=0; i<dmxdev->filternum; i++)
+		if (dmxdev->filter[i].state==DMXDEV_STATE_FREE)
+			break;
+
+	if (i==dmxdev->filternum) {
+		up(&dmxdev->mutex);
+		return -EMFILE;
+	}
+
+	dmxdevfilter=&dmxdev->filter[i];
+	sema_init(&dmxdevfilter->mutex, 1);
+	dmxdevfilter->dvbdev=dmxdev->dvbdev;
+	file->private_data=dmxdevfilter;
+
+	dvb_dmxdev_buffer_init(&dmxdevfilter->buffer);
+	dmxdevfilter->type=DMXDEV_TYPE_NONE;
+	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
+	dmxdevfilter->feed.ts=NULL;
+	init_timer(&dmxdevfilter->timer);
+
+	up(&dmxdev->mutex);
+	return 0;
+}
+
+
+static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, struct dmxdev_filter *dmxdevfilter)
+{
+	if (down_interruptible(&dmxdev->mutex))
+		return -ERESTARTSYS;
+
+	if (down_interruptible(&dmxdevfilter->mutex)) {
+		up(&dmxdev->mutex);
+		return -ERESTARTSYS;
+	}
+
+	dvb_dmxdev_filter_stop(dmxdevfilter);
+	dvb_dmxdev_filter_reset(dmxdevfilter);
+
+	if (dmxdevfilter->buffer.data) {
+		void *mem=dmxdevfilter->buffer.data;
+
+		spin_lock_irq(&dmxdev->lock);
+		dmxdevfilter->buffer.data=NULL;
+		spin_unlock_irq(&dmxdev->lock);
+		vfree(mem);
+	}
+
+	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE);
+	wake_up(&dmxdevfilter->buffer.queue);
+	up(&dmxdevfilter->mutex);
+	up(&dmxdev->mutex);
+	return 0;
+}
+
+static inline void invert_mode(dmx_filter_t *filter)
+{
+	int i;
+
+	for (i=0; i<DMX_FILTER_SIZE; i++)
+		filter->mode[i]^=0xff;
+}
+
+
+static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev,
+		struct dmxdev_filter *dmxdevfilter,
+		struct dmx_sct_filter_params *params)
+{
+	dprintk ("function : %s\n", __FUNCTION__);
+
+	dvb_dmxdev_filter_stop(dmxdevfilter);
+
+	dmxdevfilter->type=DMXDEV_TYPE_SEC;
+	dmxdevfilter->pid=params->pid;
+	memcpy(&dmxdevfilter->params.sec,
+	       params, sizeof(struct dmx_sct_filter_params));
+	invert_mode(&dmxdevfilter->params.sec.filter);
+	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
+
+	if (params->flags&DMX_IMMEDIATE_START)
+		return dvb_dmxdev_filter_start(dmxdevfilter);
+
+	return 0;
+}
+
+static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev,
+		   struct dmxdev_filter *dmxdevfilter,
+		   struct dmx_pes_filter_params *params)
+{
+	dvb_dmxdev_filter_stop(dmxdevfilter);
+
+	if (params->pes_type>DMX_PES_OTHER || params->pes_type<0)
+		return -EINVAL;
+
+	dmxdevfilter->type=DMXDEV_TYPE_PES;
+	dmxdevfilter->pid=params->pid;
+	memcpy(&dmxdevfilter->params, params, sizeof(struct dmx_pes_filter_params));
+
+	dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET);
+
+	if (params->flags&DMX_IMMEDIATE_START)
+		return dvb_dmxdev_filter_start(dmxdevfilter);
+
+	return 0;
+}
+
+static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil,
+		struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+	int result, hcount;
+	int done=0;
+
+	if (dfil->todo<=0) {
+		hcount=3+dfil->todo;
+		if (hcount>count)
+			hcount=count;
+		result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
+					buf, hcount, ppos);
+		if (result<0) {
+			dfil->todo=0;
+			return result;
+		}
+		if (copy_from_user(dfil->secheader-dfil->todo, buf, result))
+			return -EFAULT;
+		buf+=result;
+		done=result;
+		count-=result;
+		dfil->todo-=result;
+		if (dfil->todo>-3)
+			return done;
+		dfil->todo=((dfil->secheader[1]<<8)|dfil->secheader[2])&0xfff;
+		if (!count)
+			return done;
+	}
+	if (count>dfil->todo)
+		count=dfil->todo;
+	result=dvb_dmxdev_buffer_read(&dfil->buffer, file->f_flags&O_NONBLOCK,
+				buf, count, ppos);
+	if (result<0)
+		return result;
+	dfil->todo-=result;
+	return (result+done);
+}
+
+
+static ssize_t
+dvb_demux_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+	struct dmxdev_filter *dmxdevfilter=dvb_dmxdev_file_to_filter(file);
+	int ret=0;
+
+	if (down_interruptible(&dmxdevfilter->mutex))
+		return -ERESTARTSYS;
+
+	if (dmxdevfilter->type==DMXDEV_TYPE_SEC)
+		ret=dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos);
+	else
+		ret=dvb_dmxdev_buffer_read(&dmxdevfilter->buffer,
+				     file->f_flags&O_NONBLOCK,
+				     buf, count, ppos);
+
+	up(&dmxdevfilter->mutex);
+	return ret;
+}
+
+
+static int dvb_demux_do_ioctl(struct inode *inode, struct file *file,
+			      unsigned int cmd, void *parg)
+{
+	struct dmxdev_filter *dmxdevfilter=dvb_dmxdev_file_to_filter(file);
+	struct dmxdev *dmxdev=dmxdevfilter->dev;
+	unsigned long arg=(unsigned long) parg;
+	int ret=0;
+
+	if (down_interruptible (&dmxdev->mutex))
+		return -ERESTARTSYS;
+
+	switch (cmd) {
+	case DMX_START:
+		if (down_interruptible(&dmxdevfilter->mutex)) {
+			up(&dmxdev->mutex);
+			return -ERESTARTSYS;
+		}
+		if (dmxdevfilter->state<DMXDEV_STATE_SET)
+			ret = -EINVAL;
+		else
+			ret = dvb_dmxdev_filter_start(dmxdevfilter);
+		up(&dmxdevfilter->mutex);
+		break;
+
+	case DMX_STOP:
+		if (down_interruptible(&dmxdevfilter->mutex)) {
+			up(&dmxdev->mutex);
+			return -ERESTARTSYS;
+		}
+		ret=dvb_dmxdev_filter_stop(dmxdevfilter);
+		up(&dmxdevfilter->mutex);
+		break;
+
+	case DMX_SET_FILTER:
+		if (down_interruptible(&dmxdevfilter->mutex)) {
+			up(&dmxdev->mutex);
+			return -ERESTARTSYS;
+		}
+		ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter,
+				    (struct dmx_sct_filter_params *)parg);
+		up(&dmxdevfilter->mutex);
+		break;
+
+	case DMX_SET_PES_FILTER:
+		if (down_interruptible(&dmxdevfilter->mutex)) {
+			up(&dmxdev->mutex);
+			return -ERESTARTSYS;
+		}
+		ret=dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter,
+					       (struct dmx_pes_filter_params *)parg);
+		up(&dmxdevfilter->mutex);
+		break;
+
+	case DMX_SET_BUFFER_SIZE:
+		if (down_interruptible(&dmxdevfilter->mutex)) {
+			up(&dmxdev->mutex);
+			return -ERESTARTSYS;
+		}
+		ret=dvb_dmxdev_set_buffer_size(dmxdevfilter, arg);
+		up(&dmxdevfilter->mutex);
+		break;
+
+	case DMX_GET_EVENT:
+		break;
+
+	case DMX_GET_PES_PIDS:
+		if (!dmxdev->demux->get_pes_pids) {
+			ret=-EINVAL;
+			break;
+		}
+		dmxdev->demux->get_pes_pids(dmxdev->demux, (u16 *)parg);
+		break;
+
+	case DMX_GET_STC:
+		if (!dmxdev->demux->get_stc) {
+		        ret=-EINVAL;
+			break;
+		}
+		ret = dmxdev->demux->get_stc(dmxdev->demux,
+				((struct dmx_stc *)parg)->num,
+				&((struct dmx_stc *)parg)->stc,
+				&((struct dmx_stc *)parg)->base);
+		break;
+
+	default:
+		ret=-EINVAL;
+	}
+	up(&dmxdev->mutex);
+	return ret;
+}
+
+static int dvb_demux_ioctl(struct inode *inode, struct file *file,
+			   unsigned int cmd, unsigned long arg)
+{
+	return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl);
+}
+
+
+static unsigned int dvb_demux_poll (struct file *file, poll_table *wait)
+{
+	struct dmxdev_filter *dmxdevfilter = dvb_dmxdev_file_to_filter(file);
+	unsigned int mask = 0;
+
+	if (!dmxdevfilter)
+		return -EINVAL;
+
+	poll_wait(file, &dmxdevfilter->buffer.queue, wait);
+
+	if (dmxdevfilter->state != DMXDEV_STATE_GO &&
+	    dmxdevfilter->state != DMXDEV_STATE_DONE &&
+	    dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
+		return 0;
+
+	if (dmxdevfilter->buffer.error)
+		mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
+
+	if (dmxdevfilter->buffer.pread != dmxdevfilter->buffer.pwrite)
+		mask |= (POLLIN | POLLRDNORM | POLLPRI);
+
+	return mask;
+}
+
+
+static int dvb_demux_release(struct inode *inode, struct file *file)
+{
+	struct dmxdev_filter *dmxdevfilter = dvb_dmxdev_file_to_filter(file);
+	struct dmxdev *dmxdev = dmxdevfilter->dev;
+
+	return dvb_dmxdev_filter_free(dmxdev, dmxdevfilter);
+}
+
+
+static struct file_operations dvb_demux_fops = {
+	.owner		= THIS_MODULE,
+	.read		= dvb_demux_read,
+	.ioctl		= dvb_demux_ioctl,
+	.open		= dvb_demux_open,
+	.release	= dvb_demux_release,
+	.poll		= dvb_demux_poll,
+};
+
+
+static struct dvb_device dvbdev_demux = {
+	.priv		= NULL,
+	.users		= 1,
+	.writers	= 1,
+	.fops		= &dvb_demux_fops
+};
+
+
+static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file,
+		     unsigned int cmd, void *parg)
+{
+	struct dvb_device *dvbdev=(struct dvb_device *) file->private_data;
+	struct dmxdev *dmxdev=(struct dmxdev *) dvbdev->priv;
+
+	int ret=0;
+
+	if (down_interruptible (&dmxdev->mutex))
+		return -ERESTARTSYS;
+
+	switch (cmd) {
+	case DMX_SET_BUFFER_SIZE:
+		// FIXME: implement
+		ret=0;
+		break;
+
+	default:
+		ret=-EINVAL;
+	}
+	up(&dmxdev->mutex);
+	return ret;
+}
+
+
+static int dvb_dvr_ioctl(struct inode *inode, struct file *file,
+		  unsigned int cmd, unsigned long arg)
+{
+	return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl);
+}
+
+
+static unsigned int dvb_dvr_poll (struct file *file, poll_table *wait)
+{
+	struct dvb_device *dvbdev = (struct dvb_device *) file->private_data;
+	struct dmxdev *dmxdev = (struct dmxdev *) dvbdev->priv;
+	unsigned int mask = 0;
+
+	dprintk ("function : %s\n", __FUNCTION__);
+
+	poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
+
+	if ((file->f_flags&O_ACCMODE) == O_RDONLY) {
+		if (dmxdev->dvr_buffer.error)
+			mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
+
+		if (dmxdev->dvr_buffer.pread!=dmxdev->dvr_buffer.pwrite)
+			mask |= (POLLIN | POLLRDNORM | POLLPRI);
+	} else
+		mask |= (POLLOUT | POLLWRNORM | POLLPRI);
+
+	return mask;
+}
+
+
+static struct file_operations dvb_dvr_fops = {
+	.owner		= THIS_MODULE,
+	.read		= dvb_dvr_read,
+	.write		= dvb_dvr_write,
+	.ioctl		= dvb_dvr_ioctl,
+	.open		= dvb_dvr_open,
+	.release	= dvb_dvr_release,
+	.poll		= dvb_dvr_poll,
+};
+
+static struct dvb_device dvbdev_dvr = {
+	.priv		= NULL,
+	.users		= 1,
+	.writers	= 1,
+	.fops		= &dvb_dvr_fops
+};
+
+int
+dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
+{
+	int i;
+
+	if (dmxdev->demux->open(dmxdev->demux) < 0)
+		return -EUSERS;
+
+	dmxdev->filter = vmalloc(dmxdev->filternum*sizeof(struct dmxdev_filter));
+	if (!dmxdev->filter)
+		return -ENOMEM;
+
+	dmxdev->dvr = vmalloc(dmxdev->filternum*sizeof(struct dmxdev_dvr));
+	if (!dmxdev->dvr) {
+		vfree(dmxdev->filter);
+		dmxdev->filter = NULL;
+		return -ENOMEM;
+	}
+
+	sema_init(&dmxdev->mutex, 1);
+	spin_lock_init(&dmxdev->lock);
+	for (i=0; i<dmxdev->filternum; i++) {
+		dmxdev->filter[i].dev=dmxdev;
+		dmxdev->filter[i].buffer.data=NULL;
+		dvb_dmxdev_filter_state_set(&dmxdev->filter[i], DMXDEV_STATE_FREE);
+		dmxdev->dvr[i].dev=dmxdev;
+		dmxdev->dvr[i].buffer.data=NULL;
+		dvb_dmxdev_filter_state_set(&dmxdev->filter[i], DMXDEV_STATE_FREE);
+		dvb_dmxdev_dvr_state_set(&dmxdev->dvr[i], DMXDEV_STATE_FREE);
+	}
+
+	dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, DVB_DEVICE_DEMUX);
+	dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, dmxdev, DVB_DEVICE_DVR);
+
+	dvb_dmxdev_buffer_init(&dmxdev->dvr_buffer);
+
+	return 0;
+}
+EXPORT_SYMBOL(dvb_dmxdev_init);
+
+void
+dvb_dmxdev_release(struct dmxdev *dmxdev)
+{
+	dvb_unregister_device(dmxdev->dvbdev);
+	dvb_unregister_device(dmxdev->dvr_dvbdev);
+
+	vfree(dmxdev->filter);
+	dmxdev->filter=NULL;
+	vfree(dmxdev->dvr);
+	dmxdev->dvr=NULL;
+	dmxdev->demux->close(dmxdev->demux);
+}
+EXPORT_SYMBOL(dvb_dmxdev_release);