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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * dmxdev.c - DVB demultiplexer device | |
3 | * | |
f705e6e4 AO |
4 | * Copyright (C) 2000 Ralph Metzler & Marcus Metzler |
5 | * for convergence integrated media GmbH | |
1da177e4 LT |
6 | * |
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. | |
11 | * | |
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. | |
16 | * | |
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. | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/spinlock.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/vmalloc.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/sched.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> | |
1da177e4 LT |
34 | #include "dmxdev.h" |
35 | ||
36 | static int debug; | |
37 | ||
38 | module_param(debug, int, 0644); | |
39 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
40 | ||
41 | #define dprintk if (debug) printk | |
42 | ||
34731df2 AO |
43 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
44 | const u8 *src, size_t len) | |
1da177e4 | 45 | { |
34731df2 | 46 | ssize_t free; |
1da177e4 LT |
47 | |
48 | if (!len) | |
49 | return 0; | |
50 | if (!buf->data) | |
51 | return 0; | |
52 | ||
34731df2 AO |
53 | free = dvb_ringbuffer_free(buf); |
54 | if (len > free) { | |
1da177e4 | 55 | dprintk("dmxdev: buffer overflow\n"); |
34731df2 | 56 | return -EOVERFLOW; |
1da177e4 | 57 | } |
34731df2 AO |
58 | |
59 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
60 | } |
61 | ||
34731df2 | 62 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
63 | int non_blocking, char __user *buf, |
64 | size_t count, loff_t *ppos) | |
1da177e4 | 65 | { |
34731df2 AO |
66 | size_t todo; |
67 | ssize_t avail; | |
68 | ssize_t ret = 0; | |
1da177e4 LT |
69 | |
70 | if (!src->data) | |
71 | return 0; | |
72 | ||
34731df2 AO |
73 | if (src->error) { |
74 | ret = src->error; | |
75 | dvb_ringbuffer_flush(src); | |
76 | return ret; | |
1da177e4 LT |
77 | } |
78 | ||
34731df2 AO |
79 | for (todo = count; todo > 0; todo -= ret) { |
80 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
81 | ret = -EWOULDBLOCK; | |
82 | break; | |
83 | } | |
1da177e4 | 84 | |
34731df2 AO |
85 | ret = wait_event_interruptible(src->queue, |
86 | !dvb_ringbuffer_empty(src) || | |
87 | (src->error != 0)); | |
88 | if (ret < 0) | |
89 | break; | |
1da177e4 | 90 | |
34731df2 AO |
91 | if (src->error) { |
92 | ret = src->error; | |
93 | dvb_ringbuffer_flush(src); | |
94 | break; | |
1da177e4 LT |
95 | } |
96 | ||
34731df2 | 97 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
98 | if (avail > todo) |
99 | avail = todo; | |
34731df2 AO |
100 | |
101 | ret = dvb_ringbuffer_read(src, buf, avail, 1); | |
102 | if (ret < 0) | |
103 | break; | |
104 | ||
105 | buf += ret; | |
1da177e4 | 106 | } |
34731df2 AO |
107 | |
108 | return (count - todo) ? (count - todo) : ret; | |
1da177e4 LT |
109 | } |
110 | ||
f705e6e4 | 111 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
1da177e4 LT |
112 | { |
113 | struct list_head *head, *pos; | |
114 | ||
f705e6e4 | 115 | head = demux->get_frontends(demux); |
1da177e4 LT |
116 | if (!head) |
117 | return NULL; | |
118 | list_for_each(pos, head) | |
f705e6e4 | 119 | if (DMX_FE_ENTRY(pos)->source == type) |
1da177e4 LT |
120 | return DMX_FE_ENTRY(pos); |
121 | ||
122 | return NULL; | |
123 | } | |
124 | ||
1da177e4 LT |
125 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
126 | { | |
0c53c70f JS |
127 | struct dvb_device *dvbdev = file->private_data; |
128 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
129 | struct dmx_frontend *front; |
130 | ||
f705e6e4 | 131 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 | 132 | |
3593cab5 | 133 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
134 | return -ERESTARTSYS; |
135 | ||
f705e6e4 AO |
136 | if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
137 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { | |
3593cab5 | 138 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
139 | return -EOPNOTSUPP; |
140 | } | |
141 | } | |
142 | ||
f705e6e4 | 143 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
34731df2 AO |
144 | void *mem = vmalloc(DVR_BUFFER_SIZE); |
145 | if (!mem) { | |
f705e6e4 AO |
146 | mutex_unlock(&dmxdev->mutex); |
147 | return -ENOMEM; | |
148 | } | |
34731df2 | 149 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
1da177e4 LT |
150 | } |
151 | ||
f705e6e4 AO |
152 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
153 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; | |
1da177e4 LT |
154 | |
155 | if (!dmxdev->demux->write) { | |
3593cab5 | 156 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
157 | return -EOPNOTSUPP; |
158 | } | |
159 | ||
f705e6e4 | 160 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
1da177e4 LT |
161 | |
162 | if (!front) { | |
3593cab5 | 163 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
164 | return -EINVAL; |
165 | } | |
166 | dmxdev->demux->disconnect_frontend(dmxdev->demux); | |
167 | dmxdev->demux->connect_frontend(dmxdev->demux, front); | |
168 | } | |
3593cab5 | 169 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
170 | return 0; |
171 | } | |
172 | ||
173 | static int dvb_dvr_release(struct inode *inode, struct file *file) | |
174 | { | |
0c53c70f JS |
175 | struct dvb_device *dvbdev = file->private_data; |
176 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 177 | |
3593cab5 | 178 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
179 | return -ERESTARTSYS; |
180 | ||
f705e6e4 | 181 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
1da177e4 LT |
182 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
183 | dmxdev->demux->connect_frontend(dmxdev->demux, | |
184 | dmxdev->dvr_orig_fe); | |
185 | } | |
f705e6e4 | 186 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 | 187 | if (dmxdev->dvr_buffer.data) { |
f705e6e4 | 188 | void *mem = dmxdev->dvr_buffer.data; |
1da177e4 LT |
189 | mb(); |
190 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 191 | dmxdev->dvr_buffer.data = NULL; |
1da177e4 LT |
192 | spin_unlock_irq(&dmxdev->lock); |
193 | vfree(mem); | |
194 | } | |
195 | } | |
3593cab5 | 196 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
197 | return 0; |
198 | } | |
199 | ||
200 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 201 | size_t count, loff_t *ppos) |
1da177e4 | 202 | { |
0c53c70f JS |
203 | struct dvb_device *dvbdev = file->private_data; |
204 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
205 | int ret; |
206 | ||
207 | if (!dmxdev->demux->write) | |
208 | return -EOPNOTSUPP; | |
f705e6e4 | 209 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 210 | return -EINVAL; |
3593cab5 | 211 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 212 | return -ERESTARTSYS; |
f705e6e4 | 213 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 214 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
215 | return ret; |
216 | } | |
217 | ||
218 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 219 | loff_t *ppos) |
1da177e4 | 220 | { |
0c53c70f JS |
221 | struct dvb_device *dvbdev = file->private_data; |
222 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
223 | int ret; |
224 | ||
3593cab5 | 225 | //mutex_lock(&dmxdev->mutex); |
f705e6e4 AO |
226 | ret = dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
227 | file->f_flags & O_NONBLOCK, | |
228 | buf, count, ppos); | |
3593cab5 | 229 | //mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
230 | return ret; |
231 | } | |
232 | ||
f705e6e4 AO |
233 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
234 | *dmxdevfilter, int state) | |
1da177e4 LT |
235 | { |
236 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 237 | dmxdevfilter->state = state; |
1da177e4 LT |
238 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
239 | } | |
240 | ||
f705e6e4 AO |
241 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
242 | unsigned long size) | |
1da177e4 | 243 | { |
34731df2 | 244 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
1da177e4 LT |
245 | void *mem; |
246 | ||
f705e6e4 | 247 | if (buf->size == size) |
1da177e4 | 248 | return 0; |
f705e6e4 | 249 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 LT |
250 | return -EBUSY; |
251 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 AO |
252 | mem = buf->data; |
253 | buf->data = NULL; | |
254 | buf->size = size; | |
34731df2 | 255 | dvb_ringbuffer_flush(buf); |
1da177e4 LT |
256 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
257 | vfree(mem); | |
258 | ||
259 | if (buf->size) { | |
f705e6e4 | 260 | mem = vmalloc(dmxdevfilter->buffer.size); |
1da177e4 LT |
261 | if (!mem) |
262 | return -ENOMEM; | |
263 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 264 | buf->data = mem; |
1da177e4 LT |
265 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
266 | } | |
267 | return 0; | |
268 | } | |
269 | ||
270 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
271 | { | |
f705e6e4 | 272 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 273 | |
f705e6e4 | 274 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 275 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 276 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
277 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
278 | wake_up(&dmxdevfilter->buffer.queue); | |
279 | } | |
280 | ||
281 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
282 | { | |
f705e6e4 | 283 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
284 | |
285 | del_timer(&dmxdevfilter->timer); | |
286 | if (para->timeout) { | |
f705e6e4 AO |
287 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
288 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
289 | dmxdevfilter->timer.expires = | |
290 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
291 | add_timer(&dmxdevfilter->timer); |
292 | } | |
293 | } | |
294 | ||
295 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
296 | const u8 *buffer2, size_t buffer2_len, |
297 | struct dmx_section_filter *filter, | |
298 | enum dmx_success success) | |
1da177e4 | 299 | { |
0c53c70f | 300 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
301 | int ret; |
302 | ||
303 | if (dmxdevfilter->buffer.error) { | |
304 | wake_up(&dmxdevfilter->buffer.queue); | |
305 | return 0; | |
306 | } | |
307 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 308 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
1da177e4 LT |
309 | spin_unlock(&dmxdevfilter->dev->lock); |
310 | return 0; | |
311 | } | |
312 | del_timer(&dmxdevfilter->timer); | |
313 | dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n", | |
314 | buffer1[0], buffer1[1], | |
f705e6e4 AO |
315 | buffer1[2], buffer1[3], buffer1[4], buffer1[5]); |
316 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, | |
317 | buffer1_len); | |
318 | if (ret == buffer1_len) { | |
319 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
320 | buffer2_len); | |
1da177e4 | 321 | } |
f705e6e4 | 322 | if (ret < 0) { |
34731df2 AO |
323 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
324 | dmxdevfilter->buffer.error = ret; | |
1da177e4 | 325 | } |
f705e6e4 AO |
326 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
327 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
1da177e4 LT |
328 | spin_unlock(&dmxdevfilter->dev->lock); |
329 | wake_up(&dmxdevfilter->buffer.queue); | |
330 | return 0; | |
331 | } | |
332 | ||
333 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
334 | const u8 *buffer2, size_t buffer2_len, |
335 | struct dmx_ts_feed *feed, | |
336 | enum dmx_success success) | |
1da177e4 | 337 | { |
0c53c70f | 338 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 339 | struct dvb_ringbuffer *buffer; |
1da177e4 LT |
340 | int ret; |
341 | ||
342 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 343 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
1da177e4 LT |
344 | spin_unlock(&dmxdevfilter->dev->lock); |
345 | return 0; | |
346 | } | |
347 | ||
f705e6e4 AO |
348 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP) |
349 | buffer = &dmxdevfilter->buffer; | |
1da177e4 | 350 | else |
f705e6e4 | 351 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 LT |
352 | if (buffer->error) { |
353 | spin_unlock(&dmxdevfilter->dev->lock); | |
354 | wake_up(&buffer->queue); | |
355 | return 0; | |
356 | } | |
f705e6e4 AO |
357 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
358 | if (ret == buffer1_len) | |
359 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
360 | if (ret < 0) { | |
34731df2 AO |
361 | dvb_ringbuffer_flush(buffer); |
362 | buffer->error = ret; | |
1da177e4 LT |
363 | } |
364 | spin_unlock(&dmxdevfilter->dev->lock); | |
365 | wake_up(&buffer->queue); | |
366 | return 0; | |
367 | } | |
368 | ||
1da177e4 | 369 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
370 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
371 | { | |
372 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
373 | ||
374 | switch (dmxdevfilter->type) { | |
375 | case DMXDEV_TYPE_SEC: | |
376 | del_timer(&dmxdevfilter->timer); | |
377 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
378 | break; | |
379 | case DMXDEV_TYPE_PES: | |
380 | dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts); | |
381 | break; | |
382 | default: | |
383 | return -EINVAL; | |
384 | } | |
385 | return 0; | |
386 | } | |
387 | ||
1da177e4 | 388 | /* start feed associated with the specified filter */ |
1da177e4 LT |
389 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
390 | { | |
f705e6e4 | 391 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
392 | |
393 | switch (filter->type) { | |
394 | case DMXDEV_TYPE_SEC: | |
395 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 LT |
396 | case DMXDEV_TYPE_PES: |
397 | return filter->feed.ts->start_filtering(filter->feed.ts); | |
1da177e4 LT |
398 | default: |
399 | return -EINVAL; | |
400 | } | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
1da177e4 LT |
405 | /* restart section feed if it has filters left associated with it, |
406 | otherwise release the feed */ | |
1da177e4 LT |
407 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
408 | { | |
409 | int i; | |
410 | struct dmxdev *dmxdev = filter->dev; | |
411 | u16 pid = filter->params.sec.pid; | |
412 | ||
f705e6e4 AO |
413 | for (i = 0; i < dmxdev->filternum; i++) |
414 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
415 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
416 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
417 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
418 | return 0; | |
419 | } | |
420 | ||
f705e6e4 AO |
421 | filter->dev->demux->release_section_feed(dmxdev->demux, |
422 | filter->feed.sec); | |
1da177e4 LT |
423 | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
428 | { | |
f705e6e4 | 429 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
430 | return 0; |
431 | ||
432 | switch (dmxdevfilter->type) { | |
433 | case DMXDEV_TYPE_SEC: | |
434 | if (!dmxdevfilter->feed.sec) | |
435 | break; | |
436 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
437 | if (dmxdevfilter->filter.sec) | |
438 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
439 | release_filter(dmxdevfilter->feed.sec, |
440 | dmxdevfilter->filter.sec); | |
1da177e4 | 441 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 442 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
443 | break; |
444 | case DMXDEV_TYPE_PES: | |
445 | if (!dmxdevfilter->feed.ts) | |
446 | break; | |
447 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
448 | dmxdevfilter->dev->demux-> | |
f705e6e4 AO |
449 | release_ts_feed(dmxdevfilter->dev->demux, |
450 | dmxdevfilter->feed.ts); | |
451 | dmxdevfilter->feed.ts = NULL; | |
1da177e4 LT |
452 | break; |
453 | default: | |
f705e6e4 | 454 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
455 | return 0; |
456 | return -EINVAL; | |
457 | } | |
34731df2 AO |
458 | |
459 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
460 | return 0; |
461 | } | |
462 | ||
463 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) | |
464 | { | |
f705e6e4 | 465 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
466 | return 0; |
467 | ||
f705e6e4 | 468 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
469 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
470 | return 0; | |
471 | } | |
472 | ||
473 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) | |
474 | { | |
475 | struct dmxdev *dmxdev = filter->dev; | |
476 | void *mem; | |
477 | int ret, i; | |
478 | ||
479 | if (filter->state < DMXDEV_STATE_SET) | |
480 | return -EINVAL; | |
481 | ||
482 | if (filter->state >= DMXDEV_STATE_GO) | |
483 | dvb_dmxdev_filter_stop(filter); | |
484 | ||
34731df2 | 485 | if (!filter->buffer.data) { |
1da177e4 | 486 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
487 | if (!mem) |
488 | return -ENOMEM; | |
1da177e4 | 489 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 490 | filter->buffer.data = mem; |
1da177e4 | 491 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
492 | } |
493 | ||
34731df2 | 494 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
495 | |
496 | switch (filter->type) { | |
497 | case DMXDEV_TYPE_SEC: | |
498 | { | |
f705e6e4 AO |
499 | struct dmx_sct_filter_params *para = &filter->params.sec; |
500 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
501 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
502 | ||
503 | *secfilter = NULL; | |
504 | *secfeed = NULL; | |
1da177e4 | 505 | |
1da177e4 LT |
506 | |
507 | /* find active filter/feed with same PID */ | |
f705e6e4 | 508 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 509 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
510 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
511 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
512 | *secfeed = dmxdev->filter[i].feed.sec; |
513 | break; | |
514 | } | |
515 | } | |
516 | ||
517 | /* if no feed found, try to allocate new one */ | |
518 | if (!*secfeed) { | |
f705e6e4 AO |
519 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
520 | secfeed, | |
521 | dvb_dmxdev_section_callback); | |
522 | if (ret < 0) { | |
523 | printk("DVB (%s): could not alloc feed\n", | |
524 | __FUNCTION__); | |
1da177e4 LT |
525 | return ret; |
526 | } | |
527 | ||
f705e6e4 AO |
528 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
529 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
530 | if (ret < 0) { | |
531 | printk("DVB (%s): could not set feed\n", | |
532 | __FUNCTION__); | |
1da177e4 LT |
533 | dvb_dmxdev_feed_restart(filter); |
534 | return ret; | |
535 | } | |
536 | } else { | |
537 | dvb_dmxdev_feed_stop(filter); | |
538 | } | |
539 | ||
f705e6e4 | 540 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
541 | if (ret < 0) { |
542 | dvb_dmxdev_feed_restart(filter); | |
543 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 544 | dprintk("could not get filter\n"); |
1da177e4 LT |
545 | return ret; |
546 | } | |
547 | ||
548 | (*secfilter)->priv = filter; | |
549 | ||
550 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 551 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 552 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 553 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 554 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 555 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 556 | |
f705e6e4 AO |
557 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
558 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
559 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
560 | (*secfilter)->filter_mask[1] = 0; | |
561 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
562 | |
563 | filter->todo = 0; | |
564 | ||
f705e6e4 | 565 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
566 | if (ret < 0) |
567 | return ret; | |
568 | ||
569 | dvb_dmxdev_filter_timer(filter); | |
570 | break; | |
571 | } | |
1da177e4 LT |
572 | case DMXDEV_TYPE_PES: |
573 | { | |
574 | struct timespec timeout = { 0 }; | |
575 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
576 | dmx_output_t otype; | |
577 | int ret; | |
578 | int ts_type; | |
579 | enum dmx_ts_pes ts_pes; | |
580 | struct dmx_ts_feed **tsfeed = &filter->feed.ts; | |
581 | ||
582 | filter->feed.ts = NULL; | |
f705e6e4 | 583 | otype = para->output; |
1da177e4 | 584 | |
f705e6e4 | 585 | ts_pes = (enum dmx_ts_pes)para->pes_type; |
1da177e4 | 586 | |
f705e6e4 AO |
587 | if (ts_pes < DMX_PES_OTHER) |
588 | ts_type = TS_DECODER; | |
1da177e4 | 589 | else |
f705e6e4 | 590 | ts_type = 0; |
1da177e4 LT |
591 | |
592 | if (otype == DMX_OUT_TS_TAP) | |
593 | ts_type |= TS_PACKET; | |
594 | ||
595 | if (otype == DMX_OUT_TAP) | |
f705e6e4 | 596 | ts_type |= TS_PAYLOAD_ONLY | TS_PACKET; |
1da177e4 | 597 | |
f705e6e4 AO |
598 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, |
599 | tsfeed, | |
600 | dvb_dmxdev_ts_callback); | |
601 | if (ret < 0) | |
1da177e4 LT |
602 | return ret; |
603 | ||
f705e6e4 | 604 | (*tsfeed)->priv = filter; |
1da177e4 LT |
605 | |
606 | ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes, | |
5d2cd163 | 607 | 32768, timeout); |
1da177e4 | 608 | if (ret < 0) { |
f705e6e4 AO |
609 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
610 | *tsfeed); | |
1da177e4 LT |
611 | return ret; |
612 | } | |
613 | ||
614 | ret = filter->feed.ts->start_filtering(filter->feed.ts); | |
76197924 | 615 | if (ret < 0) { |
f705e6e4 AO |
616 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
617 | *tsfeed); | |
1da177e4 | 618 | return ret; |
76197924 | 619 | } |
1da177e4 LT |
620 | |
621 | break; | |
622 | } | |
623 | default: | |
624 | return -EINVAL; | |
625 | } | |
626 | ||
627 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
628 | return 0; | |
629 | } | |
630 | ||
631 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
632 | { | |
0c53c70f JS |
633 | struct dvb_device *dvbdev = file->private_data; |
634 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
635 | int i; |
636 | struct dmxdev_filter *dmxdevfilter; | |
637 | ||
638 | if (!dmxdev->filter) | |
639 | return -EINVAL; | |
640 | ||
3593cab5 | 641 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
642 | return -ERESTARTSYS; |
643 | ||
f705e6e4 AO |
644 | for (i = 0; i < dmxdev->filternum; i++) |
645 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
646 | break; |
647 | ||
f705e6e4 | 648 | if (i == dmxdev->filternum) { |
3593cab5 | 649 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
650 | return -EMFILE; |
651 | } | |
652 | ||
f705e6e4 | 653 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 654 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 655 | file->private_data = dmxdevfilter; |
1da177e4 | 656 | |
34731df2 | 657 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 658 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 659 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
f705e6e4 | 660 | dmxdevfilter->feed.ts = NULL; |
1da177e4 LT |
661 | init_timer(&dmxdevfilter->timer); |
662 | ||
3593cab5 | 663 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
664 | return 0; |
665 | } | |
666 | ||
f705e6e4 AO |
667 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
668 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 669 | { |
3593cab5 | 670 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
671 | return -ERESTARTSYS; |
672 | ||
3593cab5 IM |
673 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
674 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
675 | return -ERESTARTSYS; |
676 | } | |
677 | ||
678 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
679 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
680 | ||
681 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 682 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
683 | |
684 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 685 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
686 | spin_unlock_irq(&dmxdev->lock); |
687 | vfree(mem); | |
688 | } | |
689 | ||
690 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
691 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
692 | mutex_unlock(&dmxdevfilter->mutex); |
693 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
694 | return 0; |
695 | } | |
696 | ||
697 | static inline void invert_mode(dmx_filter_t *filter) | |
698 | { | |
699 | int i; | |
700 | ||
f705e6e4 AO |
701 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
702 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
703 | } |
704 | ||
1da177e4 | 705 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
706 | struct dmxdev_filter *dmxdevfilter, |
707 | struct dmx_sct_filter_params *params) | |
1da177e4 | 708 | { |
f705e6e4 | 709 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 LT |
710 | |
711 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
712 | ||
f705e6e4 | 713 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
714 | memcpy(&dmxdevfilter->params.sec, |
715 | params, sizeof(struct dmx_sct_filter_params)); | |
716 | invert_mode(&dmxdevfilter->params.sec.filter); | |
717 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
718 | ||
f705e6e4 | 719 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
720 | return dvb_dmxdev_filter_start(dmxdevfilter); |
721 | ||
722 | return 0; | |
723 | } | |
724 | ||
725 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
726 | struct dmxdev_filter *dmxdevfilter, |
727 | struct dmx_pes_filter_params *params) | |
1da177e4 LT |
728 | { |
729 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
730 | ||
f705e6e4 | 731 | if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0) |
1da177e4 LT |
732 | return -EINVAL; |
733 | ||
f705e6e4 AO |
734 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
735 | memcpy(&dmxdevfilter->params, params, | |
736 | sizeof(struct dmx_pes_filter_params)); | |
1da177e4 LT |
737 | |
738 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
739 | ||
f705e6e4 | 740 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
741 | return dvb_dmxdev_filter_start(dmxdevfilter); |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
747 | struct file *file, char __user *buf, |
748 | size_t count, loff_t *ppos) | |
1da177e4 LT |
749 | { |
750 | int result, hcount; | |
f705e6e4 AO |
751 | int done = 0; |
752 | ||
753 | if (dfil->todo <= 0) { | |
754 | hcount = 3 + dfil->todo; | |
755 | if (hcount > count) | |
756 | hcount = count; | |
757 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
758 | file->f_flags & O_NONBLOCK, | |
759 | buf, hcount, ppos); | |
760 | if (result < 0) { | |
761 | dfil->todo = 0; | |
1da177e4 LT |
762 | return result; |
763 | } | |
f705e6e4 | 764 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 765 | return -EFAULT; |
f705e6e4 AO |
766 | buf += result; |
767 | done = result; | |
768 | count -= result; | |
769 | dfil->todo -= result; | |
770 | if (dfil->todo > -3) | |
1da177e4 | 771 | return done; |
f705e6e4 | 772 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
773 | if (!count) |
774 | return done; | |
775 | } | |
f705e6e4 AO |
776 | if (count > dfil->todo) |
777 | count = dfil->todo; | |
778 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
779 | file->f_flags & O_NONBLOCK, | |
780 | buf, count, ppos); | |
781 | if (result < 0) | |
1da177e4 | 782 | return result; |
f705e6e4 AO |
783 | dfil->todo -= result; |
784 | return (result + done); | |
1da177e4 LT |
785 | } |
786 | ||
1da177e4 | 787 | static ssize_t |
f705e6e4 AO |
788 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
789 | loff_t *ppos) | |
1da177e4 | 790 | { |
f705e6e4 AO |
791 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
792 | int ret; | |
1da177e4 | 793 | |
3593cab5 | 794 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
795 | return -ERESTARTSYS; |
796 | ||
f705e6e4 AO |
797 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
798 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 799 | else |
f705e6e4 AO |
800 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
801 | file->f_flags & O_NONBLOCK, | |
802 | buf, count, ppos); | |
1da177e4 | 803 | |
3593cab5 | 804 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
805 | return ret; |
806 | } | |
807 | ||
1da177e4 LT |
808 | static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, |
809 | unsigned int cmd, void *parg) | |
810 | { | |
3ec4a307 | 811 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
812 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
813 | unsigned long arg = (unsigned long)parg; | |
814 | int ret = 0; | |
1da177e4 | 815 | |
3593cab5 | 816 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
817 | return -ERESTARTSYS; |
818 | ||
819 | switch (cmd) { | |
820 | case DMX_START: | |
3593cab5 IM |
821 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
822 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
823 | return -ERESTARTSYS; |
824 | } | |
f705e6e4 | 825 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
826 | ret = -EINVAL; |
827 | else | |
828 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 829 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
830 | break; |
831 | ||
832 | case DMX_STOP: | |
3593cab5 IM |
833 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
834 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
835 | return -ERESTARTSYS; |
836 | } | |
f705e6e4 | 837 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 838 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
839 | break; |
840 | ||
841 | case DMX_SET_FILTER: | |
3593cab5 IM |
842 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
843 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
844 | return -ERESTARTSYS; |
845 | } | |
f705e6e4 | 846 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 847 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
848 | break; |
849 | ||
850 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
851 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
852 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
853 | return -ERESTARTSYS; |
854 | } | |
f705e6e4 | 855 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 856 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
857 | break; |
858 | ||
859 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
860 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
861 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
862 | return -ERESTARTSYS; |
863 | } | |
f705e6e4 | 864 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 865 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
866 | break; |
867 | ||
868 | case DMX_GET_EVENT: | |
869 | break; | |
870 | ||
871 | case DMX_GET_PES_PIDS: | |
872 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 873 | ret = -EINVAL; |
1da177e4 LT |
874 | break; |
875 | } | |
f705e6e4 | 876 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
877 | break; |
878 | ||
c0510052 AO |
879 | case DMX_GET_CAPS: |
880 | if (!dmxdev->demux->get_caps) { | |
881 | ret = -EINVAL; | |
882 | break; | |
883 | } | |
884 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
885 | break; | |
886 | ||
887 | case DMX_SET_SOURCE: | |
888 | if (!dmxdev->demux->set_source) { | |
889 | ret = -EINVAL; | |
890 | break; | |
891 | } | |
892 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
893 | break; | |
894 | ||
1da177e4 LT |
895 | case DMX_GET_STC: |
896 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 897 | ret = -EINVAL; |
1da177e4 LT |
898 | break; |
899 | } | |
900 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
901 | ((struct dmx_stc *)parg)->num, |
902 | &((struct dmx_stc *)parg)->stc, | |
903 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
904 | break; |
905 | ||
906 | default: | |
f705e6e4 AO |
907 | ret = -EINVAL; |
908 | break; | |
1da177e4 | 909 | } |
3593cab5 | 910 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
911 | return ret; |
912 | } | |
913 | ||
914 | static int dvb_demux_ioctl(struct inode *inode, struct file *file, | |
915 | unsigned int cmd, unsigned long arg) | |
916 | { | |
917 | return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl); | |
918 | } | |
919 | ||
f705e6e4 | 920 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 921 | { |
3ec4a307 | 922 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
923 | unsigned int mask = 0; |
924 | ||
925 | if (!dmxdevfilter) | |
926 | return -EINVAL; | |
927 | ||
928 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
929 | ||
930 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
931 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
932 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
933 | return 0; | |
934 | ||
935 | if (dmxdevfilter->buffer.error) | |
936 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
937 | ||
34731df2 | 938 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
939 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
940 | ||
941 | return mask; | |
942 | } | |
943 | ||
1da177e4 LT |
944 | static int dvb_demux_release(struct inode *inode, struct file *file) |
945 | { | |
3ec4a307 | 946 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
947 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
948 | ||
949 | return dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
950 | } | |
951 | ||
1da177e4 | 952 | static struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
953 | .owner = THIS_MODULE, |
954 | .read = dvb_demux_read, | |
955 | .ioctl = dvb_demux_ioctl, | |
956 | .open = dvb_demux_open, | |
957 | .release = dvb_demux_release, | |
958 | .poll = dvb_demux_poll, | |
1da177e4 LT |
959 | }; |
960 | ||
1da177e4 | 961 | static struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
962 | .priv = NULL, |
963 | .users = 1, | |
964 | .writers = 1, | |
965 | .fops = &dvb_demux_fops | |
1da177e4 LT |
966 | }; |
967 | ||
1da177e4 | 968 | static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 969 | unsigned int cmd, void *parg) |
1da177e4 | 970 | { |
0c53c70f JS |
971 | struct dvb_device *dvbdev = file->private_data; |
972 | struct dmxdev *dmxdev = dvbdev->priv; | |
f705e6e4 | 973 | int ret; |
1da177e4 | 974 | |
3593cab5 | 975 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
976 | return -ERESTARTSYS; |
977 | ||
978 | switch (cmd) { | |
979 | case DMX_SET_BUFFER_SIZE: | |
980 | // FIXME: implement | |
f705e6e4 | 981 | ret = 0; |
1da177e4 LT |
982 | break; |
983 | ||
984 | default: | |
f705e6e4 AO |
985 | ret = -EINVAL; |
986 | break; | |
1da177e4 | 987 | } |
3593cab5 | 988 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
989 | return ret; |
990 | } | |
991 | ||
1da177e4 | 992 | static int dvb_dvr_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 993 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
994 | { |
995 | return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl); | |
996 | } | |
997 | ||
f705e6e4 | 998 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 999 | { |
0c53c70f JS |
1000 | struct dvb_device *dvbdev = file->private_data; |
1001 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1002 | unsigned int mask = 0; |
1003 | ||
f705e6e4 | 1004 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 LT |
1005 | |
1006 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); | |
1007 | ||
f705e6e4 | 1008 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1009 | if (dmxdev->dvr_buffer.error) |
1010 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1011 | ||
34731df2 | 1012 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1013 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1014 | } else | |
1015 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1016 | ||
1017 | return mask; | |
1018 | } | |
1019 | ||
1da177e4 | 1020 | static struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1021 | .owner = THIS_MODULE, |
1022 | .read = dvb_dvr_read, | |
1023 | .write = dvb_dvr_write, | |
1024 | .ioctl = dvb_dvr_ioctl, | |
1025 | .open = dvb_dvr_open, | |
1026 | .release = dvb_dvr_release, | |
1027 | .poll = dvb_dvr_poll, | |
1da177e4 LT |
1028 | }; |
1029 | ||
1030 | static struct dvb_device dvbdev_dvr = { | |
f705e6e4 AO |
1031 | .priv = NULL, |
1032 | .users = 1, | |
1033 | .writers = 1, | |
1034 | .fops = &dvb_dvr_fops | |
1da177e4 LT |
1035 | }; |
1036 | ||
f705e6e4 | 1037 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1038 | { |
1039 | int i; | |
1040 | ||
1041 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1042 | return -EUSERS; | |
1043 | ||
f705e6e4 | 1044 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1045 | if (!dmxdev->filter) |
1046 | return -ENOMEM; | |
1047 | ||
3593cab5 | 1048 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1049 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1050 | for (i = 0; i < dmxdev->filternum; i++) { |
1051 | dmxdev->filter[i].dev = dmxdev; | |
1052 | dmxdev->filter[i].buffer.data = NULL; | |
1053 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1054 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1055 | } |
1056 | ||
f705e6e4 AO |
1057 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
1058 | DVB_DEVICE_DEMUX); | |
1059 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, | |
1060 | dmxdev, DVB_DEVICE_DVR); | |
1da177e4 | 1061 | |
34731df2 | 1062 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1063 | |
1064 | return 0; | |
1065 | } | |
f705e6e4 | 1066 | |
1da177e4 LT |
1067 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1068 | ||
f705e6e4 | 1069 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 LT |
1070 | { |
1071 | dvb_unregister_device(dmxdev->dvbdev); | |
1072 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1073 | ||
1074 | vfree(dmxdev->filter); | |
f705e6e4 | 1075 | dmxdev->filter = NULL; |
1da177e4 LT |
1076 | dmxdev->demux->close(dmxdev->demux); |
1077 | } | |
f705e6e4 | 1078 | |
1da177e4 | 1079 | EXPORT_SYMBOL(dvb_dmxdev_release); |