Commit | Line | Data |
---|---|---|
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> | |
1da177e4 LT |
28 | #include <linux/poll.h> |
29 | #include <linux/ioctl.h> | |
30 | #include <linux/wait.h> | |
31 | #include <asm/uaccess.h> | |
32 | #include <asm/system.h> | |
1da177e4 LT |
33 | #include "dmxdev.h" |
34 | ||
35 | static int debug; | |
36 | ||
37 | module_param(debug, int, 0644); | |
38 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
39 | ||
40 | #define dprintk if (debug) printk | |
41 | ||
34731df2 AO |
42 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
43 | const u8 *src, size_t len) | |
1da177e4 | 44 | { |
34731df2 | 45 | ssize_t free; |
1da177e4 LT |
46 | |
47 | if (!len) | |
48 | return 0; | |
49 | if (!buf->data) | |
50 | return 0; | |
51 | ||
34731df2 AO |
52 | free = dvb_ringbuffer_free(buf); |
53 | if (len > free) { | |
1da177e4 | 54 | dprintk("dmxdev: buffer overflow\n"); |
34731df2 | 55 | return -EOVERFLOW; |
1da177e4 | 56 | } |
34731df2 AO |
57 | |
58 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
59 | } |
60 | ||
34731df2 | 61 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
62 | int non_blocking, char __user *buf, |
63 | size_t count, loff_t *ppos) | |
1da177e4 | 64 | { |
34731df2 AO |
65 | size_t todo; |
66 | ssize_t avail; | |
67 | ssize_t ret = 0; | |
1da177e4 LT |
68 | |
69 | if (!src->data) | |
70 | return 0; | |
71 | ||
34731df2 AO |
72 | if (src->error) { |
73 | ret = src->error; | |
74 | dvb_ringbuffer_flush(src); | |
75 | return ret; | |
1da177e4 LT |
76 | } |
77 | ||
34731df2 AO |
78 | for (todo = count; todo > 0; todo -= ret) { |
79 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
80 | ret = -EWOULDBLOCK; | |
81 | break; | |
82 | } | |
1da177e4 | 83 | |
34731df2 AO |
84 | ret = wait_event_interruptible(src->queue, |
85 | !dvb_ringbuffer_empty(src) || | |
86 | (src->error != 0)); | |
87 | if (ret < 0) | |
88 | break; | |
1da177e4 | 89 | |
34731df2 AO |
90 | if (src->error) { |
91 | ret = src->error; | |
92 | dvb_ringbuffer_flush(src); | |
93 | break; | |
1da177e4 LT |
94 | } |
95 | ||
34731df2 | 96 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
97 | if (avail > todo) |
98 | avail = todo; | |
34731df2 AO |
99 | |
100 | ret = dvb_ringbuffer_read(src, buf, avail, 1); | |
101 | if (ret < 0) | |
102 | break; | |
103 | ||
104 | buf += ret; | |
1da177e4 | 105 | } |
34731df2 AO |
106 | |
107 | return (count - todo) ? (count - todo) : ret; | |
1da177e4 LT |
108 | } |
109 | ||
f705e6e4 | 110 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
1da177e4 LT |
111 | { |
112 | struct list_head *head, *pos; | |
113 | ||
f705e6e4 | 114 | head = demux->get_frontends(demux); |
1da177e4 LT |
115 | if (!head) |
116 | return NULL; | |
117 | list_for_each(pos, head) | |
f705e6e4 | 118 | if (DMX_FE_ENTRY(pos)->source == type) |
1da177e4 LT |
119 | return DMX_FE_ENTRY(pos); |
120 | ||
121 | return NULL; | |
122 | } | |
123 | ||
1da177e4 LT |
124 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
125 | { | |
0c53c70f JS |
126 | struct dvb_device *dvbdev = file->private_data; |
127 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
128 | struct dmx_frontend *front; |
129 | ||
f705e6e4 | 130 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 | 131 | |
3593cab5 | 132 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
133 | return -ERESTARTSYS; |
134 | ||
f705e6e4 AO |
135 | if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
136 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { | |
3593cab5 | 137 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
138 | return -EOPNOTSUPP; |
139 | } | |
140 | } | |
141 | ||
f705e6e4 | 142 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 TP |
143 | void *mem; |
144 | if (!dvbdev->readers) { | |
145 | mutex_unlock(&dmxdev->mutex); | |
146 | return -EBUSY; | |
147 | } | |
148 | mem = vmalloc(DVR_BUFFER_SIZE); | |
34731df2 | 149 | if (!mem) { |
f705e6e4 AO |
150 | mutex_unlock(&dmxdev->mutex); |
151 | return -ENOMEM; | |
152 | } | |
34731df2 | 153 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
5e85bd05 | 154 | dvbdev->readers--; |
1da177e4 LT |
155 | } |
156 | ||
f705e6e4 AO |
157 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
158 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; | |
1da177e4 LT |
159 | |
160 | if (!dmxdev->demux->write) { | |
3593cab5 | 161 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
162 | return -EOPNOTSUPP; |
163 | } | |
164 | ||
f705e6e4 | 165 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
1da177e4 LT |
166 | |
167 | if (!front) { | |
3593cab5 | 168 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
169 | return -EINVAL; |
170 | } | |
171 | dmxdev->demux->disconnect_frontend(dmxdev->demux); | |
172 | dmxdev->demux->connect_frontend(dmxdev->demux, front); | |
173 | } | |
3593cab5 | 174 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
175 | return 0; |
176 | } | |
177 | ||
178 | static int dvb_dvr_release(struct inode *inode, struct file *file) | |
179 | { | |
0c53c70f JS |
180 | struct dvb_device *dvbdev = file->private_data; |
181 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 182 | |
3593cab5 | 183 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
184 | return -ERESTARTSYS; |
185 | ||
f705e6e4 | 186 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
1da177e4 LT |
187 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
188 | dmxdev->demux->connect_frontend(dmxdev->demux, | |
189 | dmxdev->dvr_orig_fe); | |
190 | } | |
f705e6e4 | 191 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 | 192 | dvbdev->readers++; |
1da177e4 | 193 | if (dmxdev->dvr_buffer.data) { |
f705e6e4 | 194 | void *mem = dmxdev->dvr_buffer.data; |
1da177e4 LT |
195 | mb(); |
196 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 197 | dmxdev->dvr_buffer.data = NULL; |
1da177e4 LT |
198 | spin_unlock_irq(&dmxdev->lock); |
199 | vfree(mem); | |
200 | } | |
201 | } | |
3593cab5 | 202 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
203 | return 0; |
204 | } | |
205 | ||
206 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 207 | size_t count, loff_t *ppos) |
1da177e4 | 208 | { |
0c53c70f JS |
209 | struct dvb_device *dvbdev = file->private_data; |
210 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
211 | int ret; |
212 | ||
213 | if (!dmxdev->demux->write) | |
214 | return -EOPNOTSUPP; | |
f705e6e4 | 215 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 216 | return -EINVAL; |
3593cab5 | 217 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 218 | return -ERESTARTSYS; |
f705e6e4 | 219 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 220 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
221 | return ret; |
222 | } | |
223 | ||
224 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 225 | loff_t *ppos) |
1da177e4 | 226 | { |
0c53c70f JS |
227 | struct dvb_device *dvbdev = file->private_data; |
228 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
229 | int ret; |
230 | ||
3593cab5 | 231 | //mutex_lock(&dmxdev->mutex); |
f705e6e4 AO |
232 | ret = dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
233 | file->f_flags & O_NONBLOCK, | |
234 | buf, count, ppos); | |
3593cab5 | 235 | //mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
236 | return ret; |
237 | } | |
238 | ||
f705e6e4 AO |
239 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
240 | *dmxdevfilter, int state) | |
1da177e4 LT |
241 | { |
242 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 243 | dmxdevfilter->state = state; |
1da177e4 LT |
244 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
245 | } | |
246 | ||
f705e6e4 AO |
247 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
248 | unsigned long size) | |
1da177e4 | 249 | { |
34731df2 | 250 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
1da177e4 LT |
251 | void *mem; |
252 | ||
f705e6e4 | 253 | if (buf->size == size) |
1da177e4 | 254 | return 0; |
f705e6e4 | 255 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 LT |
256 | return -EBUSY; |
257 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 AO |
258 | mem = buf->data; |
259 | buf->data = NULL; | |
260 | buf->size = size; | |
34731df2 | 261 | dvb_ringbuffer_flush(buf); |
1da177e4 LT |
262 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
263 | vfree(mem); | |
264 | ||
265 | if (buf->size) { | |
f705e6e4 | 266 | mem = vmalloc(dmxdevfilter->buffer.size); |
1da177e4 LT |
267 | if (!mem) |
268 | return -ENOMEM; | |
269 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 270 | buf->data = mem; |
1da177e4 LT |
271 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
272 | } | |
273 | return 0; | |
274 | } | |
275 | ||
276 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
277 | { | |
f705e6e4 | 278 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 279 | |
f705e6e4 | 280 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 281 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 282 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
283 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
284 | wake_up(&dmxdevfilter->buffer.queue); | |
285 | } | |
286 | ||
287 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
288 | { | |
f705e6e4 | 289 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
290 | |
291 | del_timer(&dmxdevfilter->timer); | |
292 | if (para->timeout) { | |
f705e6e4 AO |
293 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
294 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
295 | dmxdevfilter->timer.expires = | |
296 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
297 | add_timer(&dmxdevfilter->timer); |
298 | } | |
299 | } | |
300 | ||
301 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
302 | const u8 *buffer2, size_t buffer2_len, |
303 | struct dmx_section_filter *filter, | |
304 | enum dmx_success success) | |
1da177e4 | 305 | { |
0c53c70f | 306 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
307 | int ret; |
308 | ||
309 | if (dmxdevfilter->buffer.error) { | |
310 | wake_up(&dmxdevfilter->buffer.queue); | |
311 | return 0; | |
312 | } | |
313 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 314 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
1da177e4 LT |
315 | spin_unlock(&dmxdevfilter->dev->lock); |
316 | return 0; | |
317 | } | |
318 | del_timer(&dmxdevfilter->timer); | |
319 | dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n", | |
320 | buffer1[0], buffer1[1], | |
f705e6e4 AO |
321 | buffer1[2], buffer1[3], buffer1[4], buffer1[5]); |
322 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, | |
323 | buffer1_len); | |
324 | if (ret == buffer1_len) { | |
325 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
326 | buffer2_len); | |
1da177e4 | 327 | } |
f705e6e4 | 328 | if (ret < 0) { |
34731df2 AO |
329 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
330 | dmxdevfilter->buffer.error = ret; | |
1da177e4 | 331 | } |
f705e6e4 AO |
332 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
333 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
1da177e4 LT |
334 | spin_unlock(&dmxdevfilter->dev->lock); |
335 | wake_up(&dmxdevfilter->buffer.queue); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
340 | const u8 *buffer2, size_t buffer2_len, |
341 | struct dmx_ts_feed *feed, | |
342 | enum dmx_success success) | |
1da177e4 | 343 | { |
0c53c70f | 344 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 345 | struct dvb_ringbuffer *buffer; |
1da177e4 LT |
346 | int ret; |
347 | ||
348 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 349 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
1da177e4 LT |
350 | spin_unlock(&dmxdevfilter->dev->lock); |
351 | return 0; | |
352 | } | |
353 | ||
f705e6e4 AO |
354 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP) |
355 | buffer = &dmxdevfilter->buffer; | |
1da177e4 | 356 | else |
f705e6e4 | 357 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 LT |
358 | if (buffer->error) { |
359 | spin_unlock(&dmxdevfilter->dev->lock); | |
360 | wake_up(&buffer->queue); | |
361 | return 0; | |
362 | } | |
f705e6e4 AO |
363 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
364 | if (ret == buffer1_len) | |
365 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
366 | if (ret < 0) { | |
34731df2 AO |
367 | dvb_ringbuffer_flush(buffer); |
368 | buffer->error = ret; | |
1da177e4 LT |
369 | } |
370 | spin_unlock(&dmxdevfilter->dev->lock); | |
371 | wake_up(&buffer->queue); | |
372 | return 0; | |
373 | } | |
374 | ||
1da177e4 | 375 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
376 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
377 | { | |
378 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
379 | ||
380 | switch (dmxdevfilter->type) { | |
381 | case DMXDEV_TYPE_SEC: | |
382 | del_timer(&dmxdevfilter->timer); | |
383 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
384 | break; | |
385 | case DMXDEV_TYPE_PES: | |
386 | dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts); | |
387 | break; | |
388 | default: | |
389 | return -EINVAL; | |
390 | } | |
391 | return 0; | |
392 | } | |
393 | ||
1da177e4 | 394 | /* start feed associated with the specified filter */ |
1da177e4 LT |
395 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
396 | { | |
f705e6e4 | 397 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
398 | |
399 | switch (filter->type) { | |
400 | case DMXDEV_TYPE_SEC: | |
401 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 LT |
402 | case DMXDEV_TYPE_PES: |
403 | return filter->feed.ts->start_filtering(filter->feed.ts); | |
1da177e4 LT |
404 | default: |
405 | return -EINVAL; | |
406 | } | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
1da177e4 LT |
411 | /* restart section feed if it has filters left associated with it, |
412 | otherwise release the feed */ | |
1da177e4 LT |
413 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
414 | { | |
415 | int i; | |
416 | struct dmxdev *dmxdev = filter->dev; | |
417 | u16 pid = filter->params.sec.pid; | |
418 | ||
f705e6e4 AO |
419 | for (i = 0; i < dmxdev->filternum; i++) |
420 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
421 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
422 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
423 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
424 | return 0; | |
425 | } | |
426 | ||
f705e6e4 AO |
427 | filter->dev->demux->release_section_feed(dmxdev->demux, |
428 | filter->feed.sec); | |
1da177e4 LT |
429 | |
430 | return 0; | |
431 | } | |
432 | ||
433 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
434 | { | |
f705e6e4 | 435 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
436 | return 0; |
437 | ||
438 | switch (dmxdevfilter->type) { | |
439 | case DMXDEV_TYPE_SEC: | |
440 | if (!dmxdevfilter->feed.sec) | |
441 | break; | |
442 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
443 | if (dmxdevfilter->filter.sec) | |
444 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
445 | release_filter(dmxdevfilter->feed.sec, |
446 | dmxdevfilter->filter.sec); | |
1da177e4 | 447 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 448 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
449 | break; |
450 | case DMXDEV_TYPE_PES: | |
451 | if (!dmxdevfilter->feed.ts) | |
452 | break; | |
453 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
454 | dmxdevfilter->dev->demux-> | |
f705e6e4 AO |
455 | release_ts_feed(dmxdevfilter->dev->demux, |
456 | dmxdevfilter->feed.ts); | |
457 | dmxdevfilter->feed.ts = NULL; | |
1da177e4 LT |
458 | break; |
459 | default: | |
f705e6e4 | 460 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
461 | return 0; |
462 | return -EINVAL; | |
463 | } | |
34731df2 AO |
464 | |
465 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
466 | return 0; |
467 | } | |
468 | ||
469 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) | |
470 | { | |
f705e6e4 | 471 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
472 | return 0; |
473 | ||
f705e6e4 | 474 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
475 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
476 | return 0; | |
477 | } | |
478 | ||
479 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) | |
480 | { | |
481 | struct dmxdev *dmxdev = filter->dev; | |
482 | void *mem; | |
483 | int ret, i; | |
484 | ||
485 | if (filter->state < DMXDEV_STATE_SET) | |
486 | return -EINVAL; | |
487 | ||
488 | if (filter->state >= DMXDEV_STATE_GO) | |
489 | dvb_dmxdev_filter_stop(filter); | |
490 | ||
34731df2 | 491 | if (!filter->buffer.data) { |
1da177e4 | 492 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
493 | if (!mem) |
494 | return -ENOMEM; | |
1da177e4 | 495 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 496 | filter->buffer.data = mem; |
1da177e4 | 497 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
498 | } |
499 | ||
34731df2 | 500 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
501 | |
502 | switch (filter->type) { | |
503 | case DMXDEV_TYPE_SEC: | |
504 | { | |
f705e6e4 AO |
505 | struct dmx_sct_filter_params *para = &filter->params.sec; |
506 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
507 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
508 | ||
509 | *secfilter = NULL; | |
510 | *secfeed = NULL; | |
1da177e4 | 511 | |
1da177e4 LT |
512 | |
513 | /* find active filter/feed with same PID */ | |
f705e6e4 | 514 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 515 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
516 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
517 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
518 | *secfeed = dmxdev->filter[i].feed.sec; |
519 | break; | |
520 | } | |
521 | } | |
522 | ||
523 | /* if no feed found, try to allocate new one */ | |
524 | if (!*secfeed) { | |
f705e6e4 AO |
525 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
526 | secfeed, | |
527 | dvb_dmxdev_section_callback); | |
528 | if (ret < 0) { | |
529 | printk("DVB (%s): could not alloc feed\n", | |
530 | __FUNCTION__); | |
1da177e4 LT |
531 | return ret; |
532 | } | |
533 | ||
f705e6e4 AO |
534 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
535 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
536 | if (ret < 0) { | |
537 | printk("DVB (%s): could not set feed\n", | |
538 | __FUNCTION__); | |
1da177e4 LT |
539 | dvb_dmxdev_feed_restart(filter); |
540 | return ret; | |
541 | } | |
542 | } else { | |
543 | dvb_dmxdev_feed_stop(filter); | |
544 | } | |
545 | ||
f705e6e4 | 546 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
547 | if (ret < 0) { |
548 | dvb_dmxdev_feed_restart(filter); | |
549 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 550 | dprintk("could not get filter\n"); |
1da177e4 LT |
551 | return ret; |
552 | } | |
553 | ||
554 | (*secfilter)->priv = filter; | |
555 | ||
556 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 557 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 558 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 559 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 560 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 561 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 562 | |
f705e6e4 AO |
563 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
564 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
565 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
566 | (*secfilter)->filter_mask[1] = 0; | |
567 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
568 | |
569 | filter->todo = 0; | |
570 | ||
f705e6e4 | 571 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
572 | if (ret < 0) |
573 | return ret; | |
574 | ||
575 | dvb_dmxdev_filter_timer(filter); | |
576 | break; | |
577 | } | |
1da177e4 LT |
578 | case DMXDEV_TYPE_PES: |
579 | { | |
580 | struct timespec timeout = { 0 }; | |
581 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
582 | dmx_output_t otype; | |
583 | int ret; | |
584 | int ts_type; | |
585 | enum dmx_ts_pes ts_pes; | |
586 | struct dmx_ts_feed **tsfeed = &filter->feed.ts; | |
587 | ||
588 | filter->feed.ts = NULL; | |
f705e6e4 | 589 | otype = para->output; |
1da177e4 | 590 | |
f705e6e4 | 591 | ts_pes = (enum dmx_ts_pes)para->pes_type; |
1da177e4 | 592 | |
f705e6e4 AO |
593 | if (ts_pes < DMX_PES_OTHER) |
594 | ts_type = TS_DECODER; | |
1da177e4 | 595 | else |
f705e6e4 | 596 | ts_type = 0; |
1da177e4 LT |
597 | |
598 | if (otype == DMX_OUT_TS_TAP) | |
599 | ts_type |= TS_PACKET; | |
600 | ||
601 | if (otype == DMX_OUT_TAP) | |
f705e6e4 | 602 | ts_type |= TS_PAYLOAD_ONLY | TS_PACKET; |
1da177e4 | 603 | |
f705e6e4 AO |
604 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, |
605 | tsfeed, | |
606 | dvb_dmxdev_ts_callback); | |
607 | if (ret < 0) | |
1da177e4 LT |
608 | return ret; |
609 | ||
f705e6e4 | 610 | (*tsfeed)->priv = filter; |
1da177e4 LT |
611 | |
612 | ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes, | |
5d2cd163 | 613 | 32768, timeout); |
1da177e4 | 614 | if (ret < 0) { |
f705e6e4 AO |
615 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
616 | *tsfeed); | |
1da177e4 LT |
617 | return ret; |
618 | } | |
619 | ||
620 | ret = filter->feed.ts->start_filtering(filter->feed.ts); | |
76197924 | 621 | if (ret < 0) { |
f705e6e4 AO |
622 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
623 | *tsfeed); | |
1da177e4 | 624 | return ret; |
76197924 | 625 | } |
1da177e4 LT |
626 | |
627 | break; | |
628 | } | |
629 | default: | |
630 | return -EINVAL; | |
631 | } | |
632 | ||
633 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
634 | return 0; | |
635 | } | |
636 | ||
637 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
638 | { | |
0c53c70f JS |
639 | struct dvb_device *dvbdev = file->private_data; |
640 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
641 | int i; |
642 | struct dmxdev_filter *dmxdevfilter; | |
643 | ||
644 | if (!dmxdev->filter) | |
645 | return -EINVAL; | |
646 | ||
3593cab5 | 647 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
648 | return -ERESTARTSYS; |
649 | ||
f705e6e4 AO |
650 | for (i = 0; i < dmxdev->filternum; i++) |
651 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
652 | break; |
653 | ||
f705e6e4 | 654 | if (i == dmxdev->filternum) { |
3593cab5 | 655 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
656 | return -EMFILE; |
657 | } | |
658 | ||
f705e6e4 | 659 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 660 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 661 | file->private_data = dmxdevfilter; |
1da177e4 | 662 | |
34731df2 | 663 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 664 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 665 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
f705e6e4 | 666 | dmxdevfilter->feed.ts = NULL; |
1da177e4 LT |
667 | init_timer(&dmxdevfilter->timer); |
668 | ||
3593cab5 | 669 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
670 | return 0; |
671 | } | |
672 | ||
f705e6e4 AO |
673 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
674 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 675 | { |
3593cab5 | 676 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
677 | return -ERESTARTSYS; |
678 | ||
3593cab5 IM |
679 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
680 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
681 | return -ERESTARTSYS; |
682 | } | |
683 | ||
684 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
685 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
686 | ||
687 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 688 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
689 | |
690 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 691 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
692 | spin_unlock_irq(&dmxdev->lock); |
693 | vfree(mem); | |
694 | } | |
695 | ||
696 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
697 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
698 | mutex_unlock(&dmxdevfilter->mutex); |
699 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
700 | return 0; |
701 | } | |
702 | ||
703 | static inline void invert_mode(dmx_filter_t *filter) | |
704 | { | |
705 | int i; | |
706 | ||
f705e6e4 AO |
707 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
708 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
709 | } |
710 | ||
1da177e4 | 711 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
712 | struct dmxdev_filter *dmxdevfilter, |
713 | struct dmx_sct_filter_params *params) | |
1da177e4 | 714 | { |
f705e6e4 | 715 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 LT |
716 | |
717 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
718 | ||
f705e6e4 | 719 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
720 | memcpy(&dmxdevfilter->params.sec, |
721 | params, sizeof(struct dmx_sct_filter_params)); | |
722 | invert_mode(&dmxdevfilter->params.sec.filter); | |
723 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
724 | ||
f705e6e4 | 725 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
726 | return dvb_dmxdev_filter_start(dmxdevfilter); |
727 | ||
728 | return 0; | |
729 | } | |
730 | ||
731 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
732 | struct dmxdev_filter *dmxdevfilter, |
733 | struct dmx_pes_filter_params *params) | |
1da177e4 LT |
734 | { |
735 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
736 | ||
f705e6e4 | 737 | if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0) |
1da177e4 LT |
738 | return -EINVAL; |
739 | ||
f705e6e4 AO |
740 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
741 | memcpy(&dmxdevfilter->params, params, | |
742 | sizeof(struct dmx_pes_filter_params)); | |
1da177e4 LT |
743 | |
744 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
745 | ||
f705e6e4 | 746 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
747 | return dvb_dmxdev_filter_start(dmxdevfilter); |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
753 | struct file *file, char __user *buf, |
754 | size_t count, loff_t *ppos) | |
1da177e4 LT |
755 | { |
756 | int result, hcount; | |
f705e6e4 AO |
757 | int done = 0; |
758 | ||
759 | if (dfil->todo <= 0) { | |
760 | hcount = 3 + dfil->todo; | |
761 | if (hcount > count) | |
762 | hcount = count; | |
763 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
764 | file->f_flags & O_NONBLOCK, | |
765 | buf, hcount, ppos); | |
766 | if (result < 0) { | |
767 | dfil->todo = 0; | |
1da177e4 LT |
768 | return result; |
769 | } | |
f705e6e4 | 770 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 771 | return -EFAULT; |
f705e6e4 AO |
772 | buf += result; |
773 | done = result; | |
774 | count -= result; | |
775 | dfil->todo -= result; | |
776 | if (dfil->todo > -3) | |
1da177e4 | 777 | return done; |
f705e6e4 | 778 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
779 | if (!count) |
780 | return done; | |
781 | } | |
f705e6e4 AO |
782 | if (count > dfil->todo) |
783 | count = dfil->todo; | |
784 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
785 | file->f_flags & O_NONBLOCK, | |
786 | buf, count, ppos); | |
787 | if (result < 0) | |
1da177e4 | 788 | return result; |
f705e6e4 AO |
789 | dfil->todo -= result; |
790 | return (result + done); | |
1da177e4 LT |
791 | } |
792 | ||
1da177e4 | 793 | static ssize_t |
f705e6e4 AO |
794 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
795 | loff_t *ppos) | |
1da177e4 | 796 | { |
f705e6e4 AO |
797 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
798 | int ret; | |
1da177e4 | 799 | |
3593cab5 | 800 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
801 | return -ERESTARTSYS; |
802 | ||
f705e6e4 AO |
803 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
804 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 805 | else |
f705e6e4 AO |
806 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
807 | file->f_flags & O_NONBLOCK, | |
808 | buf, count, ppos); | |
1da177e4 | 809 | |
3593cab5 | 810 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
811 | return ret; |
812 | } | |
813 | ||
1da177e4 LT |
814 | static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, |
815 | unsigned int cmd, void *parg) | |
816 | { | |
3ec4a307 | 817 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
818 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
819 | unsigned long arg = (unsigned long)parg; | |
820 | int ret = 0; | |
1da177e4 | 821 | |
3593cab5 | 822 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
823 | return -ERESTARTSYS; |
824 | ||
825 | switch (cmd) { | |
826 | case DMX_START: | |
3593cab5 IM |
827 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
828 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
829 | return -ERESTARTSYS; |
830 | } | |
f705e6e4 | 831 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
832 | ret = -EINVAL; |
833 | else | |
834 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 835 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
836 | break; |
837 | ||
838 | case DMX_STOP: | |
3593cab5 IM |
839 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
840 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
841 | return -ERESTARTSYS; |
842 | } | |
f705e6e4 | 843 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 844 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
845 | break; |
846 | ||
847 | case DMX_SET_FILTER: | |
3593cab5 IM |
848 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
849 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
850 | return -ERESTARTSYS; |
851 | } | |
f705e6e4 | 852 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 853 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
854 | break; |
855 | ||
856 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
857 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
858 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
859 | return -ERESTARTSYS; |
860 | } | |
f705e6e4 | 861 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 862 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
863 | break; |
864 | ||
865 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
866 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
867 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
868 | return -ERESTARTSYS; |
869 | } | |
f705e6e4 | 870 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 871 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
872 | break; |
873 | ||
1da177e4 LT |
874 | case DMX_GET_PES_PIDS: |
875 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 876 | ret = -EINVAL; |
1da177e4 LT |
877 | break; |
878 | } | |
f705e6e4 | 879 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
880 | break; |
881 | ||
c0510052 AO |
882 | case DMX_GET_CAPS: |
883 | if (!dmxdev->demux->get_caps) { | |
884 | ret = -EINVAL; | |
885 | break; | |
886 | } | |
887 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
888 | break; | |
889 | ||
890 | case DMX_SET_SOURCE: | |
891 | if (!dmxdev->demux->set_source) { | |
892 | ret = -EINVAL; | |
893 | break; | |
894 | } | |
895 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
896 | break; | |
897 | ||
1da177e4 LT |
898 | case DMX_GET_STC: |
899 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 900 | ret = -EINVAL; |
1da177e4 LT |
901 | break; |
902 | } | |
903 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
904 | ((struct dmx_stc *)parg)->num, |
905 | &((struct dmx_stc *)parg)->stc, | |
906 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
907 | break; |
908 | ||
909 | default: | |
f705e6e4 AO |
910 | ret = -EINVAL; |
911 | break; | |
1da177e4 | 912 | } |
3593cab5 | 913 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
914 | return ret; |
915 | } | |
916 | ||
917 | static int dvb_demux_ioctl(struct inode *inode, struct file *file, | |
918 | unsigned int cmd, unsigned long arg) | |
919 | { | |
920 | return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl); | |
921 | } | |
922 | ||
f705e6e4 | 923 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 924 | { |
3ec4a307 | 925 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
926 | unsigned int mask = 0; |
927 | ||
928 | if (!dmxdevfilter) | |
929 | return -EINVAL; | |
930 | ||
931 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
932 | ||
933 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
934 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
935 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
936 | return 0; | |
937 | ||
938 | if (dmxdevfilter->buffer.error) | |
939 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
940 | ||
34731df2 | 941 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
942 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
943 | ||
944 | return mask; | |
945 | } | |
946 | ||
1da177e4 LT |
947 | static int dvb_demux_release(struct inode *inode, struct file *file) |
948 | { | |
3ec4a307 | 949 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
950 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
951 | ||
952 | return dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
953 | } | |
954 | ||
1da177e4 | 955 | static struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
956 | .owner = THIS_MODULE, |
957 | .read = dvb_demux_read, | |
958 | .ioctl = dvb_demux_ioctl, | |
959 | .open = dvb_demux_open, | |
960 | .release = dvb_demux_release, | |
961 | .poll = dvb_demux_poll, | |
1da177e4 LT |
962 | }; |
963 | ||
1da177e4 | 964 | static struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
965 | .priv = NULL, |
966 | .users = 1, | |
967 | .writers = 1, | |
968 | .fops = &dvb_demux_fops | |
1da177e4 LT |
969 | }; |
970 | ||
1da177e4 | 971 | static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 972 | unsigned int cmd, void *parg) |
1da177e4 | 973 | { |
0c53c70f JS |
974 | struct dvb_device *dvbdev = file->private_data; |
975 | struct dmxdev *dmxdev = dvbdev->priv; | |
f705e6e4 | 976 | int ret; |
1da177e4 | 977 | |
3593cab5 | 978 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
979 | return -ERESTARTSYS; |
980 | ||
981 | switch (cmd) { | |
982 | case DMX_SET_BUFFER_SIZE: | |
983 | // FIXME: implement | |
f705e6e4 | 984 | ret = 0; |
1da177e4 LT |
985 | break; |
986 | ||
987 | default: | |
f705e6e4 AO |
988 | ret = -EINVAL; |
989 | break; | |
1da177e4 | 990 | } |
3593cab5 | 991 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
992 | return ret; |
993 | } | |
994 | ||
1da177e4 | 995 | static int dvb_dvr_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 996 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
997 | { |
998 | return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl); | |
999 | } | |
1000 | ||
f705e6e4 | 1001 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1002 | { |
0c53c70f JS |
1003 | struct dvb_device *dvbdev = file->private_data; |
1004 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1005 | unsigned int mask = 0; |
1006 | ||
f705e6e4 | 1007 | dprintk("function : %s\n", __FUNCTION__); |
1da177e4 LT |
1008 | |
1009 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); | |
1010 | ||
f705e6e4 | 1011 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1012 | if (dmxdev->dvr_buffer.error) |
1013 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1014 | ||
34731df2 | 1015 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1016 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1017 | } else | |
1018 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1019 | ||
1020 | return mask; | |
1021 | } | |
1022 | ||
1da177e4 | 1023 | static struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1024 | .owner = THIS_MODULE, |
1025 | .read = dvb_dvr_read, | |
1026 | .write = dvb_dvr_write, | |
1027 | .ioctl = dvb_dvr_ioctl, | |
1028 | .open = dvb_dvr_open, | |
1029 | .release = dvb_dvr_release, | |
1030 | .poll = dvb_dvr_poll, | |
1da177e4 LT |
1031 | }; |
1032 | ||
1033 | static struct dvb_device dvbdev_dvr = { | |
f705e6e4 | 1034 | .priv = NULL, |
5e85bd05 | 1035 | .readers = 1, |
f705e6e4 | 1036 | .fops = &dvb_dvr_fops |
1da177e4 LT |
1037 | }; |
1038 | ||
f705e6e4 | 1039 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1040 | { |
1041 | int i; | |
1042 | ||
1043 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1044 | return -EUSERS; | |
1045 | ||
f705e6e4 | 1046 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1047 | if (!dmxdev->filter) |
1048 | return -ENOMEM; | |
1049 | ||
3593cab5 | 1050 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1051 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1052 | for (i = 0; i < dmxdev->filternum; i++) { |
1053 | dmxdev->filter[i].dev = dmxdev; | |
1054 | dmxdev->filter[i].buffer.data = NULL; | |
1055 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1056 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1057 | } |
1058 | ||
f705e6e4 AO |
1059 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
1060 | DVB_DEVICE_DEMUX); | |
1061 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, | |
1062 | dmxdev, DVB_DEVICE_DVR); | |
1da177e4 | 1063 | |
34731df2 | 1064 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1065 | |
1066 | return 0; | |
1067 | } | |
f705e6e4 | 1068 | |
1da177e4 LT |
1069 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1070 | ||
f705e6e4 | 1071 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 LT |
1072 | { |
1073 | dvb_unregister_device(dmxdev->dvbdev); | |
1074 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1075 | ||
1076 | vfree(dmxdev->filter); | |
f705e6e4 | 1077 | dmxdev->filter = NULL; |
1da177e4 LT |
1078 | dmxdev->demux->close(dmxdev->demux); |
1079 | } | |
f705e6e4 | 1080 | |
1da177e4 | 1081 | EXPORT_SYMBOL(dvb_dmxdev_release); |