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> | |
1da177e4 LT |
27 | #include <linux/poll.h> |
28 | #include <linux/ioctl.h> | |
29 | #include <linux/wait.h> | |
30 | #include <asm/uaccess.h> | |
31 | #include <asm/system.h> | |
1da177e4 LT |
32 | #include "dmxdev.h" |
33 | ||
34 | static int debug; | |
35 | ||
36 | module_param(debug, int, 0644); | |
37 | MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); | |
38 | ||
39 | #define dprintk if (debug) printk | |
40 | ||
34731df2 AO |
41 | static int dvb_dmxdev_buffer_write(struct dvb_ringbuffer *buf, |
42 | const u8 *src, size_t len) | |
1da177e4 | 43 | { |
34731df2 | 44 | ssize_t free; |
1da177e4 LT |
45 | |
46 | if (!len) | |
47 | return 0; | |
48 | if (!buf->data) | |
49 | return 0; | |
50 | ||
34731df2 AO |
51 | free = dvb_ringbuffer_free(buf); |
52 | if (len > free) { | |
1da177e4 | 53 | dprintk("dmxdev: buffer overflow\n"); |
34731df2 | 54 | return -EOVERFLOW; |
1da177e4 | 55 | } |
34731df2 AO |
56 | |
57 | return dvb_ringbuffer_write(buf, src, len); | |
1da177e4 LT |
58 | } |
59 | ||
34731df2 | 60 | static ssize_t dvb_dmxdev_buffer_read(struct dvb_ringbuffer *src, |
f705e6e4 AO |
61 | int non_blocking, char __user *buf, |
62 | size_t count, loff_t *ppos) | |
1da177e4 | 63 | { |
34731df2 AO |
64 | size_t todo; |
65 | ssize_t avail; | |
66 | ssize_t ret = 0; | |
1da177e4 LT |
67 | |
68 | if (!src->data) | |
69 | return 0; | |
70 | ||
34731df2 AO |
71 | if (src->error) { |
72 | ret = src->error; | |
73 | dvb_ringbuffer_flush(src); | |
74 | return ret; | |
1da177e4 LT |
75 | } |
76 | ||
34731df2 AO |
77 | for (todo = count; todo > 0; todo -= ret) { |
78 | if (non_blocking && dvb_ringbuffer_empty(src)) { | |
79 | ret = -EWOULDBLOCK; | |
80 | break; | |
81 | } | |
1da177e4 | 82 | |
34731df2 AO |
83 | ret = wait_event_interruptible(src->queue, |
84 | !dvb_ringbuffer_empty(src) || | |
85 | (src->error != 0)); | |
86 | if (ret < 0) | |
87 | break; | |
1da177e4 | 88 | |
34731df2 AO |
89 | if (src->error) { |
90 | ret = src->error; | |
91 | dvb_ringbuffer_flush(src); | |
92 | break; | |
1da177e4 LT |
93 | } |
94 | ||
34731df2 | 95 | avail = dvb_ringbuffer_avail(src); |
f705e6e4 AO |
96 | if (avail > todo) |
97 | avail = todo; | |
34731df2 | 98 | |
260f8d7c | 99 | ret = dvb_ringbuffer_read(src, (u8 *)buf, avail, 1); |
34731df2 AO |
100 | if (ret < 0) |
101 | break; | |
102 | ||
103 | buf += ret; | |
1da177e4 | 104 | } |
34731df2 AO |
105 | |
106 | return (count - todo) ? (count - todo) : ret; | |
1da177e4 LT |
107 | } |
108 | ||
f705e6e4 | 109 | static struct dmx_frontend *get_fe(struct dmx_demux *demux, int type) |
1da177e4 LT |
110 | { |
111 | struct list_head *head, *pos; | |
112 | ||
f705e6e4 | 113 | head = demux->get_frontends(demux); |
1da177e4 LT |
114 | if (!head) |
115 | return NULL; | |
116 | list_for_each(pos, head) | |
f705e6e4 | 117 | if (DMX_FE_ENTRY(pos)->source == type) |
1da177e4 LT |
118 | return DMX_FE_ENTRY(pos); |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
1da177e4 LT |
123 | static int dvb_dvr_open(struct inode *inode, struct file *file) |
124 | { | |
0c53c70f JS |
125 | struct dvb_device *dvbdev = file->private_data; |
126 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
127 | struct dmx_frontend *front; |
128 | ||
46b4f7c1 | 129 | dprintk("function : %s\n", __func__); |
1da177e4 | 130 | |
3593cab5 | 131 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
132 | return -ERESTARTSYS; |
133 | ||
57861b43 MR |
134 | if (dmxdev->exit) { |
135 | mutex_unlock(&dmxdev->mutex); | |
136 | return -ENODEV; | |
137 | } | |
138 | ||
f705e6e4 AO |
139 | if ((file->f_flags & O_ACCMODE) == O_RDWR) { |
140 | if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) { | |
3593cab5 | 141 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
142 | return -EOPNOTSUPP; |
143 | } | |
144 | } | |
145 | ||
f705e6e4 | 146 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 TP |
147 | void *mem; |
148 | if (!dvbdev->readers) { | |
149 | mutex_unlock(&dmxdev->mutex); | |
150 | return -EBUSY; | |
151 | } | |
152 | mem = vmalloc(DVR_BUFFER_SIZE); | |
34731df2 | 153 | if (!mem) { |
f705e6e4 AO |
154 | mutex_unlock(&dmxdev->mutex); |
155 | return -ENOMEM; | |
156 | } | |
34731df2 | 157 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE); |
5e85bd05 | 158 | dvbdev->readers--; |
1da177e4 LT |
159 | } |
160 | ||
f705e6e4 AO |
161 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
162 | dmxdev->dvr_orig_fe = dmxdev->demux->frontend; | |
1da177e4 LT |
163 | |
164 | if (!dmxdev->demux->write) { | |
3593cab5 | 165 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
166 | return -EOPNOTSUPP; |
167 | } | |
168 | ||
f705e6e4 | 169 | front = get_fe(dmxdev->demux, DMX_MEMORY_FE); |
1da177e4 LT |
170 | |
171 | if (!front) { | |
3593cab5 | 172 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
173 | return -EINVAL; |
174 | } | |
175 | dmxdev->demux->disconnect_frontend(dmxdev->demux); | |
176 | dmxdev->demux->connect_frontend(dmxdev->demux, front); | |
177 | } | |
57861b43 | 178 | dvbdev->users++; |
3593cab5 | 179 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
180 | return 0; |
181 | } | |
182 | ||
183 | static int dvb_dvr_release(struct inode *inode, struct file *file) | |
184 | { | |
0c53c70f JS |
185 | struct dvb_device *dvbdev = file->private_data; |
186 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 | 187 | |
c2788502 | 188 | mutex_lock(&dmxdev->mutex); |
1da177e4 | 189 | |
f705e6e4 | 190 | if ((file->f_flags & O_ACCMODE) == O_WRONLY) { |
1da177e4 LT |
191 | dmxdev->demux->disconnect_frontend(dmxdev->demux); |
192 | dmxdev->demux->connect_frontend(dmxdev->demux, | |
193 | dmxdev->dvr_orig_fe); | |
194 | } | |
f705e6e4 | 195 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
5e85bd05 | 196 | dvbdev->readers++; |
1da177e4 | 197 | if (dmxdev->dvr_buffer.data) { |
f705e6e4 | 198 | void *mem = dmxdev->dvr_buffer.data; |
1da177e4 LT |
199 | mb(); |
200 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 201 | dmxdev->dvr_buffer.data = NULL; |
1da177e4 LT |
202 | spin_unlock_irq(&dmxdev->lock); |
203 | vfree(mem); | |
204 | } | |
205 | } | |
57861b43 MR |
206 | /* TODO */ |
207 | dvbdev->users--; | |
208 | if(dvbdev->users==-1 && dmxdev->exit==1) { | |
209 | fops_put(file->f_op); | |
210 | file->f_op = NULL; | |
211 | mutex_unlock(&dmxdev->mutex); | |
212 | wake_up(&dvbdev->wait_queue); | |
213 | } else | |
214 | mutex_unlock(&dmxdev->mutex); | |
215 | ||
1da177e4 LT |
216 | return 0; |
217 | } | |
218 | ||
219 | static ssize_t dvb_dvr_write(struct file *file, const char __user *buf, | |
f705e6e4 | 220 | size_t count, loff_t *ppos) |
1da177e4 | 221 | { |
0c53c70f JS |
222 | struct dvb_device *dvbdev = file->private_data; |
223 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
224 | int ret; |
225 | ||
226 | if (!dmxdev->demux->write) | |
227 | return -EOPNOTSUPP; | |
f705e6e4 | 228 | if ((file->f_flags & O_ACCMODE) != O_WRONLY) |
1da177e4 | 229 | return -EINVAL; |
3593cab5 | 230 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 | 231 | return -ERESTARTSYS; |
57861b43 MR |
232 | |
233 | if (dmxdev->exit) { | |
234 | mutex_unlock(&dmxdev->mutex); | |
235 | return -ENODEV; | |
236 | } | |
f705e6e4 | 237 | ret = dmxdev->demux->write(dmxdev->demux, buf, count); |
3593cab5 | 238 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
239 | return ret; |
240 | } | |
241 | ||
242 | static ssize_t dvb_dvr_read(struct file *file, char __user *buf, size_t count, | |
f705e6e4 | 243 | loff_t *ppos) |
1da177e4 | 244 | { |
0c53c70f JS |
245 | struct dvb_device *dvbdev = file->private_data; |
246 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
247 | int ret; |
248 | ||
57861b43 MR |
249 | if (dmxdev->exit) { |
250 | mutex_unlock(&dmxdev->mutex); | |
251 | return -ENODEV; | |
252 | } | |
253 | ||
3593cab5 | 254 | //mutex_lock(&dmxdev->mutex); |
f705e6e4 AO |
255 | ret = dvb_dmxdev_buffer_read(&dmxdev->dvr_buffer, |
256 | file->f_flags & O_NONBLOCK, | |
257 | buf, count, ppos); | |
3593cab5 | 258 | //mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
259 | return ret; |
260 | } | |
261 | ||
f705e6e4 AO |
262 | static inline void dvb_dmxdev_filter_state_set(struct dmxdev_filter |
263 | *dmxdevfilter, int state) | |
1da177e4 LT |
264 | { |
265 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 266 | dmxdevfilter->state = state; |
1da177e4 LT |
267 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
268 | } | |
269 | ||
f705e6e4 AO |
270 | static int dvb_dmxdev_set_buffer_size(struct dmxdev_filter *dmxdevfilter, |
271 | unsigned long size) | |
1da177e4 | 272 | { |
34731df2 | 273 | struct dvb_ringbuffer *buf = &dmxdevfilter->buffer; |
1da177e4 LT |
274 | void *mem; |
275 | ||
f705e6e4 | 276 | if (buf->size == size) |
1da177e4 | 277 | return 0; |
f705e6e4 | 278 | if (dmxdevfilter->state >= DMXDEV_STATE_GO) |
1da177e4 LT |
279 | return -EBUSY; |
280 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 AO |
281 | mem = buf->data; |
282 | buf->data = NULL; | |
283 | buf->size = size; | |
48c01a9c AO |
284 | |
285 | /* reset and not flush in case the buffer shrinks */ | |
286 | dvb_ringbuffer_reset(buf); | |
1da177e4 LT |
287 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
288 | vfree(mem); | |
289 | ||
290 | if (buf->size) { | |
f705e6e4 | 291 | mem = vmalloc(dmxdevfilter->buffer.size); |
1da177e4 LT |
292 | if (!mem) |
293 | return -ENOMEM; | |
294 | spin_lock_irq(&dmxdevfilter->dev->lock); | |
f705e6e4 | 295 | buf->data = mem; |
1da177e4 LT |
296 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
297 | } | |
298 | return 0; | |
299 | } | |
300 | ||
301 | static void dvb_dmxdev_filter_timeout(unsigned long data) | |
302 | { | |
f705e6e4 | 303 | struct dmxdev_filter *dmxdevfilter = (struct dmxdev_filter *)data; |
1da177e4 | 304 | |
f705e6e4 | 305 | dmxdevfilter->buffer.error = -ETIMEDOUT; |
1da177e4 | 306 | spin_lock_irq(&dmxdevfilter->dev->lock); |
f705e6e4 | 307 | dmxdevfilter->state = DMXDEV_STATE_TIMEDOUT; |
1da177e4 LT |
308 | spin_unlock_irq(&dmxdevfilter->dev->lock); |
309 | wake_up(&dmxdevfilter->buffer.queue); | |
310 | } | |
311 | ||
312 | static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter) | |
313 | { | |
f705e6e4 | 314 | struct dmx_sct_filter_params *para = &dmxdevfilter->params.sec; |
1da177e4 LT |
315 | |
316 | del_timer(&dmxdevfilter->timer); | |
317 | if (para->timeout) { | |
f705e6e4 AO |
318 | dmxdevfilter->timer.function = dvb_dmxdev_filter_timeout; |
319 | dmxdevfilter->timer.data = (unsigned long)dmxdevfilter; | |
320 | dmxdevfilter->timer.expires = | |
321 | jiffies + 1 + (HZ / 2 + HZ * para->timeout) / 1000; | |
1da177e4 LT |
322 | add_timer(&dmxdevfilter->timer); |
323 | } | |
324 | } | |
325 | ||
326 | static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
327 | const u8 *buffer2, size_t buffer2_len, |
328 | struct dmx_section_filter *filter, | |
329 | enum dmx_success success) | |
1da177e4 | 330 | { |
0c53c70f | 331 | struct dmxdev_filter *dmxdevfilter = filter->priv; |
1da177e4 LT |
332 | int ret; |
333 | ||
334 | if (dmxdevfilter->buffer.error) { | |
335 | wake_up(&dmxdevfilter->buffer.queue); | |
336 | return 0; | |
337 | } | |
338 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 339 | if (dmxdevfilter->state != DMXDEV_STATE_GO) { |
1da177e4 LT |
340 | spin_unlock(&dmxdevfilter->dev->lock); |
341 | return 0; | |
342 | } | |
343 | del_timer(&dmxdevfilter->timer); | |
344 | dprintk("dmxdev: section callback %02x %02x %02x %02x %02x %02x\n", | |
345 | buffer1[0], buffer1[1], | |
f705e6e4 AO |
346 | buffer1[2], buffer1[3], buffer1[4], buffer1[5]); |
347 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1, | |
348 | buffer1_len); | |
349 | if (ret == buffer1_len) { | |
350 | ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2, | |
351 | buffer2_len); | |
1da177e4 | 352 | } |
f705e6e4 | 353 | if (ret < 0) { |
34731df2 AO |
354 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); |
355 | dmxdevfilter->buffer.error = ret; | |
1da177e4 | 356 | } |
f705e6e4 AO |
357 | if (dmxdevfilter->params.sec.flags & DMX_ONESHOT) |
358 | dmxdevfilter->state = DMXDEV_STATE_DONE; | |
1da177e4 LT |
359 | spin_unlock(&dmxdevfilter->dev->lock); |
360 | wake_up(&dmxdevfilter->buffer.queue); | |
361 | return 0; | |
362 | } | |
363 | ||
364 | static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len, | |
f705e6e4 AO |
365 | const u8 *buffer2, size_t buffer2_len, |
366 | struct dmx_ts_feed *feed, | |
367 | enum dmx_success success) | |
1da177e4 | 368 | { |
0c53c70f | 369 | struct dmxdev_filter *dmxdevfilter = feed->priv; |
34731df2 | 370 | struct dvb_ringbuffer *buffer; |
1da177e4 LT |
371 | int ret; |
372 | ||
373 | spin_lock(&dmxdevfilter->dev->lock); | |
f705e6e4 | 374 | if (dmxdevfilter->params.pes.output == DMX_OUT_DECODER) { |
1da177e4 LT |
375 | spin_unlock(&dmxdevfilter->dev->lock); |
376 | return 0; | |
377 | } | |
378 | ||
b01cd937 PH |
379 | if (dmxdevfilter->params.pes.output == DMX_OUT_TAP |
380 | || dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) | |
f705e6e4 | 381 | buffer = &dmxdevfilter->buffer; |
1da177e4 | 382 | else |
f705e6e4 | 383 | buffer = &dmxdevfilter->dev->dvr_buffer; |
1da177e4 LT |
384 | if (buffer->error) { |
385 | spin_unlock(&dmxdevfilter->dev->lock); | |
386 | wake_up(&buffer->queue); | |
387 | return 0; | |
388 | } | |
f705e6e4 AO |
389 | ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len); |
390 | if (ret == buffer1_len) | |
391 | ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len); | |
392 | if (ret < 0) { | |
34731df2 AO |
393 | dvb_ringbuffer_flush(buffer); |
394 | buffer->error = ret; | |
1da177e4 LT |
395 | } |
396 | spin_unlock(&dmxdevfilter->dev->lock); | |
397 | wake_up(&buffer->queue); | |
398 | return 0; | |
399 | } | |
400 | ||
1da177e4 | 401 | /* stop feed but only mark the specified filter as stopped (state set) */ |
1da177e4 LT |
402 | static int dvb_dmxdev_feed_stop(struct dmxdev_filter *dmxdevfilter) |
403 | { | |
404 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
405 | ||
406 | switch (dmxdevfilter->type) { | |
407 | case DMXDEV_TYPE_SEC: | |
408 | del_timer(&dmxdevfilter->timer); | |
409 | dmxdevfilter->feed.sec->stop_filtering(dmxdevfilter->feed.sec); | |
410 | break; | |
411 | case DMXDEV_TYPE_PES: | |
412 | dmxdevfilter->feed.ts->stop_filtering(dmxdevfilter->feed.ts); | |
413 | break; | |
414 | default: | |
415 | return -EINVAL; | |
416 | } | |
417 | return 0; | |
418 | } | |
419 | ||
1da177e4 | 420 | /* start feed associated with the specified filter */ |
1da177e4 LT |
421 | static int dvb_dmxdev_feed_start(struct dmxdev_filter *filter) |
422 | { | |
f705e6e4 | 423 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); |
1da177e4 LT |
424 | |
425 | switch (filter->type) { | |
426 | case DMXDEV_TYPE_SEC: | |
427 | return filter->feed.sec->start_filtering(filter->feed.sec); | |
1da177e4 LT |
428 | case DMXDEV_TYPE_PES: |
429 | return filter->feed.ts->start_filtering(filter->feed.ts); | |
1da177e4 LT |
430 | default: |
431 | return -EINVAL; | |
432 | } | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
1da177e4 LT |
437 | /* restart section feed if it has filters left associated with it, |
438 | otherwise release the feed */ | |
1da177e4 LT |
439 | static int dvb_dmxdev_feed_restart(struct dmxdev_filter *filter) |
440 | { | |
441 | int i; | |
442 | struct dmxdev *dmxdev = filter->dev; | |
443 | u16 pid = filter->params.sec.pid; | |
444 | ||
f705e6e4 AO |
445 | for (i = 0; i < dmxdev->filternum; i++) |
446 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && | |
447 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && | |
448 | dmxdev->filter[i].params.sec.pid == pid) { | |
1da177e4 LT |
449 | dvb_dmxdev_feed_start(&dmxdev->filter[i]); |
450 | return 0; | |
451 | } | |
452 | ||
f705e6e4 AO |
453 | filter->dev->demux->release_section_feed(dmxdev->demux, |
454 | filter->feed.sec); | |
1da177e4 LT |
455 | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static int dvb_dmxdev_filter_stop(struct dmxdev_filter *dmxdevfilter) | |
460 | { | |
f705e6e4 | 461 | if (dmxdevfilter->state < DMXDEV_STATE_GO) |
1da177e4 LT |
462 | return 0; |
463 | ||
464 | switch (dmxdevfilter->type) { | |
465 | case DMXDEV_TYPE_SEC: | |
466 | if (!dmxdevfilter->feed.sec) | |
467 | break; | |
468 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
469 | if (dmxdevfilter->filter.sec) | |
470 | dmxdevfilter->feed.sec-> | |
f705e6e4 AO |
471 | release_filter(dmxdevfilter->feed.sec, |
472 | dmxdevfilter->filter.sec); | |
1da177e4 | 473 | dvb_dmxdev_feed_restart(dmxdevfilter); |
f705e6e4 | 474 | dmxdevfilter->feed.sec = NULL; |
1da177e4 LT |
475 | break; |
476 | case DMXDEV_TYPE_PES: | |
477 | if (!dmxdevfilter->feed.ts) | |
478 | break; | |
479 | dvb_dmxdev_feed_stop(dmxdevfilter); | |
480 | dmxdevfilter->dev->demux-> | |
f705e6e4 AO |
481 | release_ts_feed(dmxdevfilter->dev->demux, |
482 | dmxdevfilter->feed.ts); | |
483 | dmxdevfilter->feed.ts = NULL; | |
1da177e4 LT |
484 | break; |
485 | default: | |
f705e6e4 | 486 | if (dmxdevfilter->state == DMXDEV_STATE_ALLOCATED) |
1da177e4 LT |
487 | return 0; |
488 | return -EINVAL; | |
489 | } | |
34731df2 AO |
490 | |
491 | dvb_ringbuffer_flush(&dmxdevfilter->buffer); | |
1da177e4 LT |
492 | return 0; |
493 | } | |
494 | ||
495 | static inline int dvb_dmxdev_filter_reset(struct dmxdev_filter *dmxdevfilter) | |
496 | { | |
f705e6e4 | 497 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
498 | return 0; |
499 | ||
f705e6e4 | 500 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 LT |
501 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
502 | return 0; | |
503 | } | |
504 | ||
505 | static int dvb_dmxdev_filter_start(struct dmxdev_filter *filter) | |
506 | { | |
507 | struct dmxdev *dmxdev = filter->dev; | |
508 | void *mem; | |
509 | int ret, i; | |
510 | ||
511 | if (filter->state < DMXDEV_STATE_SET) | |
512 | return -EINVAL; | |
513 | ||
514 | if (filter->state >= DMXDEV_STATE_GO) | |
515 | dvb_dmxdev_filter_stop(filter); | |
516 | ||
34731df2 | 517 | if (!filter->buffer.data) { |
1da177e4 | 518 | mem = vmalloc(filter->buffer.size); |
34731df2 AO |
519 | if (!mem) |
520 | return -ENOMEM; | |
1da177e4 | 521 | spin_lock_irq(&filter->dev->lock); |
f705e6e4 | 522 | filter->buffer.data = mem; |
1da177e4 | 523 | spin_unlock_irq(&filter->dev->lock); |
1da177e4 LT |
524 | } |
525 | ||
34731df2 | 526 | dvb_ringbuffer_flush(&filter->buffer); |
1da177e4 LT |
527 | |
528 | switch (filter->type) { | |
529 | case DMXDEV_TYPE_SEC: | |
530 | { | |
f705e6e4 AO |
531 | struct dmx_sct_filter_params *para = &filter->params.sec; |
532 | struct dmx_section_filter **secfilter = &filter->filter.sec; | |
533 | struct dmx_section_feed **secfeed = &filter->feed.sec; | |
534 | ||
535 | *secfilter = NULL; | |
536 | *secfeed = NULL; | |
1da177e4 | 537 | |
1da177e4 LT |
538 | |
539 | /* find active filter/feed with same PID */ | |
f705e6e4 | 540 | for (i = 0; i < dmxdev->filternum; i++) { |
1da177e4 | 541 | if (dmxdev->filter[i].state >= DMXDEV_STATE_GO && |
09794a6f AO |
542 | dmxdev->filter[i].type == DMXDEV_TYPE_SEC && |
543 | dmxdev->filter[i].params.sec.pid == para->pid) { | |
1da177e4 LT |
544 | *secfeed = dmxdev->filter[i].feed.sec; |
545 | break; | |
546 | } | |
547 | } | |
548 | ||
549 | /* if no feed found, try to allocate new one */ | |
550 | if (!*secfeed) { | |
f705e6e4 AO |
551 | ret = dmxdev->demux->allocate_section_feed(dmxdev->demux, |
552 | secfeed, | |
553 | dvb_dmxdev_section_callback); | |
554 | if (ret < 0) { | |
555 | printk("DVB (%s): could not alloc feed\n", | |
46b4f7c1 | 556 | __func__); |
1da177e4 LT |
557 | return ret; |
558 | } | |
559 | ||
f705e6e4 AO |
560 | ret = (*secfeed)->set(*secfeed, para->pid, 32768, |
561 | (para->flags & DMX_CHECK_CRC) ? 1 : 0); | |
562 | if (ret < 0) { | |
563 | printk("DVB (%s): could not set feed\n", | |
46b4f7c1 | 564 | __func__); |
1da177e4 LT |
565 | dvb_dmxdev_feed_restart(filter); |
566 | return ret; | |
567 | } | |
568 | } else { | |
569 | dvb_dmxdev_feed_stop(filter); | |
570 | } | |
571 | ||
f705e6e4 | 572 | ret = (*secfeed)->allocate_filter(*secfeed, secfilter); |
1da177e4 LT |
573 | if (ret < 0) { |
574 | dvb_dmxdev_feed_restart(filter); | |
575 | filter->feed.sec->start_filtering(*secfeed); | |
f705e6e4 | 576 | dprintk("could not get filter\n"); |
1da177e4 LT |
577 | return ret; |
578 | } | |
579 | ||
580 | (*secfilter)->priv = filter; | |
581 | ||
582 | memcpy(&((*secfilter)->filter_value[3]), | |
f705e6e4 | 583 | &(para->filter.filter[1]), DMX_FILTER_SIZE - 1); |
1da177e4 | 584 | memcpy(&(*secfilter)->filter_mask[3], |
f705e6e4 | 585 | ¶->filter.mask[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 586 | memcpy(&(*secfilter)->filter_mode[3], |
f705e6e4 | 587 | ¶->filter.mode[1], DMX_FILTER_SIZE - 1); |
1da177e4 | 588 | |
f705e6e4 AO |
589 | (*secfilter)->filter_value[0] = para->filter.filter[0]; |
590 | (*secfilter)->filter_mask[0] = para->filter.mask[0]; | |
591 | (*secfilter)->filter_mode[0] = para->filter.mode[0]; | |
592 | (*secfilter)->filter_mask[1] = 0; | |
593 | (*secfilter)->filter_mask[2] = 0; | |
1da177e4 LT |
594 | |
595 | filter->todo = 0; | |
596 | ||
f705e6e4 | 597 | ret = filter->feed.sec->start_filtering(filter->feed.sec); |
1da177e4 LT |
598 | if (ret < 0) |
599 | return ret; | |
600 | ||
601 | dvb_dmxdev_filter_timer(filter); | |
602 | break; | |
603 | } | |
1da177e4 LT |
604 | case DMXDEV_TYPE_PES: |
605 | { | |
606 | struct timespec timeout = { 0 }; | |
607 | struct dmx_pes_filter_params *para = &filter->params.pes; | |
608 | dmx_output_t otype; | |
609 | int ret; | |
610 | int ts_type; | |
611 | enum dmx_ts_pes ts_pes; | |
612 | struct dmx_ts_feed **tsfeed = &filter->feed.ts; | |
613 | ||
614 | filter->feed.ts = NULL; | |
f705e6e4 | 615 | otype = para->output; |
1da177e4 | 616 | |
f705e6e4 | 617 | ts_pes = (enum dmx_ts_pes)para->pes_type; |
1da177e4 | 618 | |
f705e6e4 AO |
619 | if (ts_pes < DMX_PES_OTHER) |
620 | ts_type = TS_DECODER; | |
1da177e4 | 621 | else |
f705e6e4 | 622 | ts_type = 0; |
1da177e4 | 623 | |
4a24ce3a | 624 | if (otype == DMX_OUT_TS_TAP) |
1da177e4 | 625 | ts_type |= TS_PACKET; |
4a24ce3a AO |
626 | else if (otype == DMX_OUT_TSDEMUX_TAP) |
627 | ts_type |= TS_PACKET | TS_DEMUX; | |
628 | else if (otype == DMX_OUT_TAP) | |
629 | ts_type |= TS_PACKET | TS_DEMUX | TS_PAYLOAD_ONLY; | |
1da177e4 | 630 | |
f705e6e4 AO |
631 | ret = dmxdev->demux->allocate_ts_feed(dmxdev->demux, |
632 | tsfeed, | |
633 | dvb_dmxdev_ts_callback); | |
634 | if (ret < 0) | |
1da177e4 LT |
635 | return ret; |
636 | ||
f705e6e4 | 637 | (*tsfeed)->priv = filter; |
1da177e4 LT |
638 | |
639 | ret = (*tsfeed)->set(*tsfeed, para->pid, ts_type, ts_pes, | |
5d2cd163 | 640 | 32768, timeout); |
1da177e4 | 641 | if (ret < 0) { |
f705e6e4 AO |
642 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
643 | *tsfeed); | |
1da177e4 LT |
644 | return ret; |
645 | } | |
646 | ||
647 | ret = filter->feed.ts->start_filtering(filter->feed.ts); | |
76197924 | 648 | if (ret < 0) { |
f705e6e4 AO |
649 | dmxdev->demux->release_ts_feed(dmxdev->demux, |
650 | *tsfeed); | |
1da177e4 | 651 | return ret; |
76197924 | 652 | } |
1da177e4 LT |
653 | |
654 | break; | |
655 | } | |
656 | default: | |
657 | return -EINVAL; | |
658 | } | |
659 | ||
660 | dvb_dmxdev_filter_state_set(filter, DMXDEV_STATE_GO); | |
661 | return 0; | |
662 | } | |
663 | ||
664 | static int dvb_demux_open(struct inode *inode, struct file *file) | |
665 | { | |
0c53c70f JS |
666 | struct dvb_device *dvbdev = file->private_data; |
667 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
668 | int i; |
669 | struct dmxdev_filter *dmxdevfilter; | |
670 | ||
671 | if (!dmxdev->filter) | |
672 | return -EINVAL; | |
673 | ||
3593cab5 | 674 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
675 | return -ERESTARTSYS; |
676 | ||
f705e6e4 AO |
677 | for (i = 0; i < dmxdev->filternum; i++) |
678 | if (dmxdev->filter[i].state == DMXDEV_STATE_FREE) | |
1da177e4 LT |
679 | break; |
680 | ||
f705e6e4 | 681 | if (i == dmxdev->filternum) { |
3593cab5 | 682 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
683 | return -EMFILE; |
684 | } | |
685 | ||
f705e6e4 | 686 | dmxdevfilter = &dmxdev->filter[i]; |
3593cab5 | 687 | mutex_init(&dmxdevfilter->mutex); |
f705e6e4 | 688 | file->private_data = dmxdevfilter; |
1da177e4 | 689 | |
34731df2 | 690 | dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192); |
f705e6e4 | 691 | dmxdevfilter->type = DMXDEV_TYPE_NONE; |
1da177e4 | 692 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED); |
f705e6e4 | 693 | dmxdevfilter->feed.ts = NULL; |
1da177e4 LT |
694 | init_timer(&dmxdevfilter->timer); |
695 | ||
57861b43 MR |
696 | dvbdev->users++; |
697 | ||
3593cab5 | 698 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
699 | return 0; |
700 | } | |
701 | ||
f705e6e4 AO |
702 | static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev, |
703 | struct dmxdev_filter *dmxdevfilter) | |
1da177e4 | 704 | { |
c2788502 SA |
705 | mutex_lock(&dmxdev->mutex); |
706 | mutex_lock(&dmxdevfilter->mutex); | |
1da177e4 LT |
707 | |
708 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
709 | dvb_dmxdev_filter_reset(dmxdevfilter); | |
710 | ||
711 | if (dmxdevfilter->buffer.data) { | |
f705e6e4 | 712 | void *mem = dmxdevfilter->buffer.data; |
1da177e4 LT |
713 | |
714 | spin_lock_irq(&dmxdev->lock); | |
f705e6e4 | 715 | dmxdevfilter->buffer.data = NULL; |
1da177e4 LT |
716 | spin_unlock_irq(&dmxdev->lock); |
717 | vfree(mem); | |
718 | } | |
719 | ||
720 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_FREE); | |
721 | wake_up(&dmxdevfilter->buffer.queue); | |
3593cab5 IM |
722 | mutex_unlock(&dmxdevfilter->mutex); |
723 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
724 | return 0; |
725 | } | |
726 | ||
727 | static inline void invert_mode(dmx_filter_t *filter) | |
728 | { | |
729 | int i; | |
730 | ||
f705e6e4 AO |
731 | for (i = 0; i < DMX_FILTER_SIZE; i++) |
732 | filter->mode[i] ^= 0xff; | |
1da177e4 LT |
733 | } |
734 | ||
1da177e4 | 735 | static int dvb_dmxdev_filter_set(struct dmxdev *dmxdev, |
f705e6e4 AO |
736 | struct dmxdev_filter *dmxdevfilter, |
737 | struct dmx_sct_filter_params *params) | |
1da177e4 | 738 | { |
46b4f7c1 | 739 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
740 | |
741 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
742 | ||
f705e6e4 | 743 | dmxdevfilter->type = DMXDEV_TYPE_SEC; |
1da177e4 LT |
744 | memcpy(&dmxdevfilter->params.sec, |
745 | params, sizeof(struct dmx_sct_filter_params)); | |
746 | invert_mode(&dmxdevfilter->params.sec.filter); | |
747 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
748 | ||
f705e6e4 | 749 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
750 | return dvb_dmxdev_filter_start(dmxdevfilter); |
751 | ||
752 | return 0; | |
753 | } | |
754 | ||
755 | static int dvb_dmxdev_pes_filter_set(struct dmxdev *dmxdev, | |
f705e6e4 AO |
756 | struct dmxdev_filter *dmxdevfilter, |
757 | struct dmx_pes_filter_params *params) | |
1da177e4 LT |
758 | { |
759 | dvb_dmxdev_filter_stop(dmxdevfilter); | |
760 | ||
f705e6e4 | 761 | if (params->pes_type > DMX_PES_OTHER || params->pes_type < 0) |
1da177e4 LT |
762 | return -EINVAL; |
763 | ||
f705e6e4 AO |
764 | dmxdevfilter->type = DMXDEV_TYPE_PES; |
765 | memcpy(&dmxdevfilter->params, params, | |
766 | sizeof(struct dmx_pes_filter_params)); | |
1da177e4 LT |
767 | |
768 | dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_SET); | |
769 | ||
f705e6e4 | 770 | if (params->flags & DMX_IMMEDIATE_START) |
1da177e4 LT |
771 | return dvb_dmxdev_filter_start(dmxdevfilter); |
772 | ||
773 | return 0; | |
774 | } | |
775 | ||
776 | static ssize_t dvb_dmxdev_read_sec(struct dmxdev_filter *dfil, | |
f705e6e4 AO |
777 | struct file *file, char __user *buf, |
778 | size_t count, loff_t *ppos) | |
1da177e4 LT |
779 | { |
780 | int result, hcount; | |
f705e6e4 AO |
781 | int done = 0; |
782 | ||
783 | if (dfil->todo <= 0) { | |
784 | hcount = 3 + dfil->todo; | |
785 | if (hcount > count) | |
786 | hcount = count; | |
787 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
788 | file->f_flags & O_NONBLOCK, | |
789 | buf, hcount, ppos); | |
790 | if (result < 0) { | |
791 | dfil->todo = 0; | |
1da177e4 LT |
792 | return result; |
793 | } | |
f705e6e4 | 794 | if (copy_from_user(dfil->secheader - dfil->todo, buf, result)) |
1da177e4 | 795 | return -EFAULT; |
f705e6e4 AO |
796 | buf += result; |
797 | done = result; | |
798 | count -= result; | |
799 | dfil->todo -= result; | |
800 | if (dfil->todo > -3) | |
1da177e4 | 801 | return done; |
f705e6e4 | 802 | dfil->todo = ((dfil->secheader[1] << 8) | dfil->secheader[2]) & 0xfff; |
1da177e4 LT |
803 | if (!count) |
804 | return done; | |
805 | } | |
f705e6e4 AO |
806 | if (count > dfil->todo) |
807 | count = dfil->todo; | |
808 | result = dvb_dmxdev_buffer_read(&dfil->buffer, | |
809 | file->f_flags & O_NONBLOCK, | |
810 | buf, count, ppos); | |
811 | if (result < 0) | |
1da177e4 | 812 | return result; |
f705e6e4 AO |
813 | dfil->todo -= result; |
814 | return (result + done); | |
1da177e4 LT |
815 | } |
816 | ||
1da177e4 | 817 | static ssize_t |
f705e6e4 AO |
818 | dvb_demux_read(struct file *file, char __user *buf, size_t count, |
819 | loff_t *ppos) | |
1da177e4 | 820 | { |
f705e6e4 AO |
821 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
822 | int ret; | |
1da177e4 | 823 | |
3593cab5 | 824 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) |
1da177e4 LT |
825 | return -ERESTARTSYS; |
826 | ||
f705e6e4 AO |
827 | if (dmxdevfilter->type == DMXDEV_TYPE_SEC) |
828 | ret = dvb_dmxdev_read_sec(dmxdevfilter, file, buf, count, ppos); | |
1da177e4 | 829 | else |
f705e6e4 AO |
830 | ret = dvb_dmxdev_buffer_read(&dmxdevfilter->buffer, |
831 | file->f_flags & O_NONBLOCK, | |
832 | buf, count, ppos); | |
1da177e4 | 833 | |
3593cab5 | 834 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
835 | return ret; |
836 | } | |
837 | ||
1da177e4 LT |
838 | static int dvb_demux_do_ioctl(struct inode *inode, struct file *file, |
839 | unsigned int cmd, void *parg) | |
840 | { | |
3ec4a307 | 841 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
f705e6e4 AO |
842 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
843 | unsigned long arg = (unsigned long)parg; | |
844 | int ret = 0; | |
1da177e4 | 845 | |
3593cab5 | 846 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
847 | return -ERESTARTSYS; |
848 | ||
849 | switch (cmd) { | |
850 | case DMX_START: | |
3593cab5 IM |
851 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
852 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
853 | return -ERESTARTSYS; |
854 | } | |
f705e6e4 | 855 | if (dmxdevfilter->state < DMXDEV_STATE_SET) |
1da177e4 LT |
856 | ret = -EINVAL; |
857 | else | |
858 | ret = dvb_dmxdev_filter_start(dmxdevfilter); | |
3593cab5 | 859 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
860 | break; |
861 | ||
862 | case DMX_STOP: | |
3593cab5 IM |
863 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
864 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
865 | return -ERESTARTSYS; |
866 | } | |
f705e6e4 | 867 | ret = dvb_dmxdev_filter_stop(dmxdevfilter); |
3593cab5 | 868 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
869 | break; |
870 | ||
871 | case DMX_SET_FILTER: | |
3593cab5 IM |
872 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
873 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
874 | return -ERESTARTSYS; |
875 | } | |
f705e6e4 | 876 | ret = dvb_dmxdev_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 877 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
878 | break; |
879 | ||
880 | case DMX_SET_PES_FILTER: | |
3593cab5 IM |
881 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
882 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
883 | return -ERESTARTSYS; |
884 | } | |
f705e6e4 | 885 | ret = dvb_dmxdev_pes_filter_set(dmxdev, dmxdevfilter, parg); |
3593cab5 | 886 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
887 | break; |
888 | ||
889 | case DMX_SET_BUFFER_SIZE: | |
3593cab5 IM |
890 | if (mutex_lock_interruptible(&dmxdevfilter->mutex)) { |
891 | mutex_unlock(&dmxdev->mutex); | |
1da177e4 LT |
892 | return -ERESTARTSYS; |
893 | } | |
f705e6e4 | 894 | ret = dvb_dmxdev_set_buffer_size(dmxdevfilter, arg); |
3593cab5 | 895 | mutex_unlock(&dmxdevfilter->mutex); |
1da177e4 LT |
896 | break; |
897 | ||
1da177e4 LT |
898 | case DMX_GET_PES_PIDS: |
899 | if (!dmxdev->demux->get_pes_pids) { | |
f705e6e4 | 900 | ret = -EINVAL; |
1da177e4 LT |
901 | break; |
902 | } | |
f705e6e4 | 903 | dmxdev->demux->get_pes_pids(dmxdev->demux, parg); |
1da177e4 LT |
904 | break; |
905 | ||
c0510052 AO |
906 | case DMX_GET_CAPS: |
907 | if (!dmxdev->demux->get_caps) { | |
908 | ret = -EINVAL; | |
909 | break; | |
910 | } | |
911 | ret = dmxdev->demux->get_caps(dmxdev->demux, parg); | |
912 | break; | |
913 | ||
914 | case DMX_SET_SOURCE: | |
915 | if (!dmxdev->demux->set_source) { | |
916 | ret = -EINVAL; | |
917 | break; | |
918 | } | |
919 | ret = dmxdev->demux->set_source(dmxdev->demux, parg); | |
920 | break; | |
921 | ||
1da177e4 LT |
922 | case DMX_GET_STC: |
923 | if (!dmxdev->demux->get_stc) { | |
f705e6e4 | 924 | ret = -EINVAL; |
1da177e4 LT |
925 | break; |
926 | } | |
927 | ret = dmxdev->demux->get_stc(dmxdev->demux, | |
f705e6e4 AO |
928 | ((struct dmx_stc *)parg)->num, |
929 | &((struct dmx_stc *)parg)->stc, | |
930 | &((struct dmx_stc *)parg)->base); | |
1da177e4 LT |
931 | break; |
932 | ||
933 | default: | |
f705e6e4 AO |
934 | ret = -EINVAL; |
935 | break; | |
1da177e4 | 936 | } |
3593cab5 | 937 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
938 | return ret; |
939 | } | |
940 | ||
941 | static int dvb_demux_ioctl(struct inode *inode, struct file *file, | |
942 | unsigned int cmd, unsigned long arg) | |
943 | { | |
944 | return dvb_usercopy(inode, file, cmd, arg, dvb_demux_do_ioctl); | |
945 | } | |
946 | ||
f705e6e4 | 947 | static unsigned int dvb_demux_poll(struct file *file, poll_table *wait) |
1da177e4 | 948 | { |
3ec4a307 | 949 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
950 | unsigned int mask = 0; |
951 | ||
952 | if (!dmxdevfilter) | |
953 | return -EINVAL; | |
954 | ||
955 | poll_wait(file, &dmxdevfilter->buffer.queue, wait); | |
956 | ||
957 | if (dmxdevfilter->state != DMXDEV_STATE_GO && | |
958 | dmxdevfilter->state != DMXDEV_STATE_DONE && | |
959 | dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT) | |
960 | return 0; | |
961 | ||
962 | if (dmxdevfilter->buffer.error) | |
963 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
964 | ||
34731df2 | 965 | if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer)) |
1da177e4 LT |
966 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
967 | ||
968 | return mask; | |
969 | } | |
970 | ||
1da177e4 LT |
971 | static int dvb_demux_release(struct inode *inode, struct file *file) |
972 | { | |
3ec4a307 | 973 | struct dmxdev_filter *dmxdevfilter = file->private_data; |
1da177e4 LT |
974 | struct dmxdev *dmxdev = dmxdevfilter->dev; |
975 | ||
57861b43 MR |
976 | int ret; |
977 | ||
978 | ret = dvb_dmxdev_filter_free(dmxdev, dmxdevfilter); | |
979 | ||
980 | mutex_lock(&dmxdev->mutex); | |
981 | dmxdev->dvbdev->users--; | |
982 | if(dmxdev->dvbdev->users==1 && dmxdev->exit==1) { | |
983 | fops_put(file->f_op); | |
984 | file->f_op = NULL; | |
985 | mutex_unlock(&dmxdev->mutex); | |
986 | wake_up(&dmxdev->dvbdev->wait_queue); | |
987 | } else | |
988 | mutex_unlock(&dmxdev->mutex); | |
989 | ||
990 | return ret; | |
1da177e4 LT |
991 | } |
992 | ||
1da177e4 | 993 | static struct file_operations dvb_demux_fops = { |
f705e6e4 AO |
994 | .owner = THIS_MODULE, |
995 | .read = dvb_demux_read, | |
996 | .ioctl = dvb_demux_ioctl, | |
997 | .open = dvb_demux_open, | |
998 | .release = dvb_demux_release, | |
999 | .poll = dvb_demux_poll, | |
1da177e4 LT |
1000 | }; |
1001 | ||
1da177e4 | 1002 | static struct dvb_device dvbdev_demux = { |
f705e6e4 AO |
1003 | .priv = NULL, |
1004 | .users = 1, | |
1005 | .writers = 1, | |
1006 | .fops = &dvb_demux_fops | |
1da177e4 LT |
1007 | }; |
1008 | ||
1da177e4 | 1009 | static int dvb_dvr_do_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1010 | unsigned int cmd, void *parg) |
1da177e4 | 1011 | { |
0c53c70f JS |
1012 | struct dvb_device *dvbdev = file->private_data; |
1013 | struct dmxdev *dmxdev = dvbdev->priv; | |
f705e6e4 | 1014 | int ret; |
1da177e4 | 1015 | |
3593cab5 | 1016 | if (mutex_lock_interruptible(&dmxdev->mutex)) |
1da177e4 LT |
1017 | return -ERESTARTSYS; |
1018 | ||
1019 | switch (cmd) { | |
1020 | case DMX_SET_BUFFER_SIZE: | |
1021 | // FIXME: implement | |
f705e6e4 | 1022 | ret = 0; |
1da177e4 LT |
1023 | break; |
1024 | ||
1025 | default: | |
f705e6e4 AO |
1026 | ret = -EINVAL; |
1027 | break; | |
1da177e4 | 1028 | } |
3593cab5 | 1029 | mutex_unlock(&dmxdev->mutex); |
1da177e4 LT |
1030 | return ret; |
1031 | } | |
1032 | ||
1da177e4 | 1033 | static int dvb_dvr_ioctl(struct inode *inode, struct file *file, |
f705e6e4 | 1034 | unsigned int cmd, unsigned long arg) |
1da177e4 LT |
1035 | { |
1036 | return dvb_usercopy(inode, file, cmd, arg, dvb_dvr_do_ioctl); | |
1037 | } | |
1038 | ||
f705e6e4 | 1039 | static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait) |
1da177e4 | 1040 | { |
0c53c70f JS |
1041 | struct dvb_device *dvbdev = file->private_data; |
1042 | struct dmxdev *dmxdev = dvbdev->priv; | |
1da177e4 LT |
1043 | unsigned int mask = 0; |
1044 | ||
46b4f7c1 | 1045 | dprintk("function : %s\n", __func__); |
1da177e4 LT |
1046 | |
1047 | poll_wait(file, &dmxdev->dvr_buffer.queue, wait); | |
1048 | ||
f705e6e4 | 1049 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { |
1da177e4 LT |
1050 | if (dmxdev->dvr_buffer.error) |
1051 | mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR); | |
1052 | ||
34731df2 | 1053 | if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer)) |
1da177e4 LT |
1054 | mask |= (POLLIN | POLLRDNORM | POLLPRI); |
1055 | } else | |
1056 | mask |= (POLLOUT | POLLWRNORM | POLLPRI); | |
1057 | ||
1058 | return mask; | |
1059 | } | |
1060 | ||
1da177e4 | 1061 | static struct file_operations dvb_dvr_fops = { |
f705e6e4 AO |
1062 | .owner = THIS_MODULE, |
1063 | .read = dvb_dvr_read, | |
1064 | .write = dvb_dvr_write, | |
1065 | .ioctl = dvb_dvr_ioctl, | |
1066 | .open = dvb_dvr_open, | |
1067 | .release = dvb_dvr_release, | |
1068 | .poll = dvb_dvr_poll, | |
1da177e4 LT |
1069 | }; |
1070 | ||
1071 | static struct dvb_device dvbdev_dvr = { | |
f705e6e4 | 1072 | .priv = NULL, |
5e85bd05 | 1073 | .readers = 1, |
57861b43 | 1074 | .users = 1, |
f705e6e4 | 1075 | .fops = &dvb_dvr_fops |
1da177e4 LT |
1076 | }; |
1077 | ||
f705e6e4 | 1078 | int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) |
1da177e4 LT |
1079 | { |
1080 | int i; | |
1081 | ||
1082 | if (dmxdev->demux->open(dmxdev->demux) < 0) | |
1083 | return -EUSERS; | |
1084 | ||
f705e6e4 | 1085 | dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter)); |
1da177e4 LT |
1086 | if (!dmxdev->filter) |
1087 | return -ENOMEM; | |
1088 | ||
3593cab5 | 1089 | mutex_init(&dmxdev->mutex); |
1da177e4 | 1090 | spin_lock_init(&dmxdev->lock); |
f705e6e4 AO |
1091 | for (i = 0; i < dmxdev->filternum; i++) { |
1092 | dmxdev->filter[i].dev = dmxdev; | |
1093 | dmxdev->filter[i].buffer.data = NULL; | |
1094 | dvb_dmxdev_filter_state_set(&dmxdev->filter[i], | |
1095 | DMXDEV_STATE_FREE); | |
1da177e4 LT |
1096 | } |
1097 | ||
f705e6e4 AO |
1098 | dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, |
1099 | DVB_DEVICE_DEMUX); | |
1100 | dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, | |
1101 | dmxdev, DVB_DEVICE_DVR); | |
1da177e4 | 1102 | |
34731df2 | 1103 | dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); |
1da177e4 LT |
1104 | |
1105 | return 0; | |
1106 | } | |
f705e6e4 | 1107 | |
1da177e4 LT |
1108 | EXPORT_SYMBOL(dvb_dmxdev_init); |
1109 | ||
f705e6e4 | 1110 | void dvb_dmxdev_release(struct dmxdev *dmxdev) |
1da177e4 | 1111 | { |
57861b43 MR |
1112 | dmxdev->exit=1; |
1113 | if (dmxdev->dvbdev->users > 1) { | |
1114 | wait_event(dmxdev->dvbdev->wait_queue, | |
1115 | dmxdev->dvbdev->users==1); | |
1116 | } | |
1117 | if (dmxdev->dvr_dvbdev->users > 1) { | |
1118 | wait_event(dmxdev->dvr_dvbdev->wait_queue, | |
1119 | dmxdev->dvr_dvbdev->users==1); | |
1120 | } | |
1121 | ||
1da177e4 LT |
1122 | dvb_unregister_device(dmxdev->dvbdev); |
1123 | dvb_unregister_device(dmxdev->dvr_dvbdev); | |
1124 | ||
1125 | vfree(dmxdev->filter); | |
f705e6e4 | 1126 | dmxdev->filter = NULL; |
1da177e4 LT |
1127 | dmxdev->demux->close(dmxdev->demux); |
1128 | } | |
f705e6e4 | 1129 | |
1da177e4 | 1130 | EXPORT_SYMBOL(dvb_dmxdev_release); |